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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-04 11:31:31 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-04 11:31:31 -0800 |
| commit | e627078a0cbdc0c391efeb5a2c4eb287328fd633 (patch) | |
| tree | 9cdabfc9c661ea2ac8801f4611e9541a6411706a | |
| parent | 14c79092909a52b6fd6394b6ad5e7756c4f9565e (diff) | |
| parent | b38feccd663b55ab07116208b68e1ffc7c3c7e78 (diff) | |
| download | op-kernel-dev-e627078a0cbdc0c391efeb5a2c4eb287328fd633.zip op-kernel-dev-e627078a0cbdc0c391efeb5a2c4eb287328fd633.tar.gz | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"There is only one new feature in this pull for the 4.4 merge window,
most of it is small enhancements, cleanup and bug fixes:
- Add the s390 backend for the software dirty bit tracking. This
adds two new pgtable functions pte_clear_soft_dirty and
pmd_clear_soft_dirty which is why there is a hit to
arch/x86/include/asm/pgtable.h in this pull request.
- A series of cleanup patches for the AP bus, this includes the
removal of the support for two outdated crypto cards (PCICC and
PCICA).
- The irq handling / signaling on buffer full in the runtime
instrumentation code is dropped.
- Some micro optimizations: remove unnecessary memory barriers for a
couple of functions: [smb_]rmb, [smb_]wmb, atomics, bitops, and for
spin_unlock. Use the builtin bswap if available and make
test_and_set_bit_lock more cache friendly.
- Statistics and a tracepoint for the diagnose calls to the
hypervisor.
- The CPU measurement facility support to sample KVM guests is
improved.
- The vector instructions are now always enabled for user space
processes if the hardware has the vector facility. This simplifies
the FPU handling code. The fpu-internal.h header is split into fpu
internals, api and types just like x86.
- Cleanup and improvements for the common I/O layer.
- Rework udelay to solve a problem with kprobe. udelay has busy loop
semantics but still uses an idle processor state for the wait"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (66 commits)
s390: remove runtime instrumentation interrupts
s390/cio: de-duplicate subchannel validation
s390/css: unneeded initialization in for_each_subchannel
s390/Kconfig: use builtin bswap
s390/dasd: fix disconnected device with valid path mask
s390/dasd: fix invalid PAV assignment after suspend/resume
s390/dasd: fix double free in dasd_eckd_read_conf
s390/kernel: fix ptrace peek/poke for floating point registers
s390/cio: move ccw_device_stlck functions
s390/cio: move ccw_device_call_handler
s390/topology: reduce per_cpu() invocations
s390/nmi: reduce size of percpu variable
s390/nmi: fix terminology
s390/nmi: remove casts
s390/nmi: remove pointless error strings
s390: don't store registers on disabled wait anymore
s390: get rid of __set_psw_mask()
s390/fpu: split fpu-internal.h into fpu internals, api, and type headers
s390/dasd: fix list_del corruption after lcu changes
s390/spinlock: remove unneeded serializations at unlock
...
101 files changed, 2412 insertions, 3668 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 1d57000..9b9a2db 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -101,6 +101,7 @@ config S390 select ARCH_SAVE_PAGE_KEYS if HIBERNATION select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_NUMA_BALANCING + select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF select ARCH_WANTS_PROT_NUMA_PROT_NONE select ARCH_WANT_IPC_PARSE_VERSION @@ -118,6 +119,7 @@ config S390 select HAVE_ARCH_EARLY_PFN_TO_NID select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_SECCOMP_FILTER + select HAVE_ARCH_SOFT_DIRTY select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE select HAVE_BPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c index 5eeffee..0450357 100644 --- a/arch/s390/hypfs/hypfs_diag.c +++ b/arch/s390/hypfs/hypfs_diag.c @@ -15,6 +15,7 @@ #include <linux/string.h> #include <linux/vmalloc.h> #include <linux/mm.h> +#include <asm/diag.h> #include <asm/ebcdic.h> #include "hypfs.h" @@ -336,7 +337,7 @@ static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr) /* Diagnose 204 functions */ -static int diag204(unsigned long subcode, unsigned long size, void *addr) +static inline int __diag204(unsigned long subcode, unsigned long size, void *addr) { register unsigned long _subcode asm("0") = subcode; register unsigned long _size asm("1") = size; @@ -351,6 +352,12 @@ static int diag204(unsigned long subcode, unsigned long size, void *addr) return _size; } +static int diag204(unsigned long subcode, unsigned long size, void *addr) +{ + diag_stat_inc(DIAG_STAT_X204); + return __diag204(subcode, size, addr); +} + /* * For the old diag subcode 4 with simple data format we have to use real * memory. If we use subcode 6 or 7 with extended data format, we can (and @@ -505,6 +512,7 @@ static int diag224(void *ptr) { int rc = -EOPNOTSUPP; + diag_stat_inc(DIAG_STAT_X224); asm volatile( " diag %1,%2,0x224\n" "0: lhi %0,0x0\n" diff --git a/arch/s390/hypfs/hypfs_diag0c.c b/arch/s390/hypfs/hypfs_diag0c.c index 24c747a..0f1927c 100644 --- a/arch/s390/hypfs/hypfs_diag0c.c +++ b/arch/s390/hypfs/hypfs_diag0c.c @@ -8,6 +8,7 @@ #include <linux/slab.h> #include <linux/cpu.h> +#include <asm/diag.h> #include <asm/hypfs.h> #include "hypfs.h" @@ -18,6 +19,7 @@ */ static void diag0c(struct hypfs_diag0c_entry *entry) { + diag_stat_inc(DIAG_STAT_X00C); asm volatile ( " sam31\n" " diag %0,%0,0x0c\n" diff --git a/arch/s390/hypfs/hypfs_sprp.c b/arch/s390/hypfs/hypfs_sprp.c index dd42a26..c9e5c72 100644 --- a/arch/s390/hypfs/hypfs_sprp.c +++ b/arch/s390/hypfs/hypfs_sprp.c @@ -13,6 +13,7 @@ #include <linux/types.h> #include <linux/uaccess.h> #include <asm/compat.h> +#include <asm/diag.h> #include <asm/sclp.h> #include "hypfs.h" @@ -22,7 +23,7 @@ #define DIAG304_CMD_MAX 2 -static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd) +static inline unsigned long __hypfs_sprp_diag304(void *data, unsigned long cmd) { register unsigned long _data asm("2") = (unsigned long) data; register unsigned long _rc asm("3"); @@ -34,6 +35,12 @@ static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd) return _rc; } +static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd) +{ + diag_stat_inc(DIAG_STAT_X304); + return __hypfs_sprp_diag304(data, cmd); +} + static void hypfs_sprp_free(const void *data) { free_page((unsigned long) data); diff --git a/arch/s390/hypfs/hypfs_vm.c b/arch/s390/hypfs/hypfs_vm.c index afbe079..44feac3 100644 --- a/arch/s390/hypfs/hypfs_vm.c +++ b/arch/s390/hypfs/hypfs_vm.c @@ -9,6 +9,7 @@ #include <linux/errno.h> #include <linux/string.h> #include <linux/vmalloc.h> +#include <asm/diag.h> #include <asm/ebcdic.h> #include <asm/timex.h> #include "hypfs.h" @@ -66,6 +67,7 @@ static int diag2fc(int size, char* query, void *addr) memset(parm_list.aci_grp, 0x40, NAME_LEN); rc = -1; + diag_stat_inc(DIAG_STAT_X2FC); asm volatile( " diag %0,%1,0x2fc\n" "0:\n" diff --git a/arch/s390/include/asm/appldata.h b/arch/s390/include/asm/appldata.h index 16887c5..a6263d4 100644 --- a/arch/s390/include/asm/appldata.h +++ b/arch/s390/include/asm/appldata.h @@ -7,6 +7,7 @@ #ifndef _ASM_S390_APPLDATA_H #define _ASM_S390_APPLDATA_H +#include <asm/diag.h> #include <asm/io.h> #define APPLDATA_START_INTERVAL_REC 0x80 @@ -53,6 +54,7 @@ static inline int appldata_asm(struct appldata_product_id *id, parm_list.buffer_length = length; parm_list.product_id_addr = (unsigned long) id; parm_list.buffer_addr = virt_to_phys(buffer); + diag_stat_inc(DIAG_STAT_X0DC); asm volatile( " diag %1,%0,0xdc" : "=d" (ry) diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h index 117fa5c..911064a 100644 --- a/arch/s390/include/asm/atomic.h +++ b/arch/s390/include/asm/atomic.h @@ -36,7 +36,6 @@ \ typecheck(atomic_t *, ptr); \ asm volatile( \ - __barrier \ op_string " %0,%2,%1\n" \ __barrier \ : "=d" (old_val), "+Q" ((ptr)->counter) \ @@ -180,7 +179,6 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) \ typecheck(atomic64_t *, ptr); \ asm volatile( \ - __barrier \ op_string " %0,%2,%1\n" \ __barrier \ : "=d" (old_val), "+Q" ((ptr)->counter) \ diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index d48fe01..d68e11e 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -22,10 +22,10 @@ #define mb() do { asm volatile(__ASM_BARRIER : : : "memory"); } while (0) -#define rmb() mb() -#define wmb() mb() -#define dma_rmb() rmb() -#define dma_wmb() wmb() +#define rmb() barrier() +#define wmb() barrier() +#define dma_rmb() mb() +#define dma_wmb() mb() #define smp_mb() mb() #define smp_rmb() rmb() #define smp_wmb() wmb() diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h index 9b68e98..8043f10 100644 --- a/arch/s390/include/asm/bitops.h +++ b/arch/s390/include/asm/bitops.h @@ -11,30 +11,25 @@ * big-endian system because, unlike little endian, the number of each * bit depends on the word size. * - * The bitop functions are defined to work on unsigned longs, so for an - * s390x system the bits end up numbered: + * The bitop functions are defined to work on unsigned longs, so the bits + * end up numbered: * |63..............0|127............64|191...........128|255...........192| - * and on s390: - * |31.....0|63....32|95....64|127...96|159..128|191..160|223..192|255..224| * * There are a few little-endian macros used mostly for filesystem - * bitmaps, these work on similar bit arrays layouts, but - * byte-oriented: + * bitmaps, these work on similar bit array layouts, but byte-oriented: * |7...0|15...8|23...16|31...24|39...32|47...40|55...48|63...56| * - * The main difference is that bit 3-5 (64b) or 3-4 (32b) in the bit - * number field needs to be reversed compared to the big-endian bit - * fields. This can be achieved by XOR with 0x38 (64b) or 0x18 (32b). + * The main difference is that bit 3-5 in the bit number field needs to be + * reversed compared to the big-endian bit fields. This can be achieved by + * XOR with 0x38. * - * We also have special functions which work with an MSB0 encoding: - * on an s390x system the bits are numbered: + * We also have special functions which work with an MSB0 encoding. + * The bits are numbered: * |0..............63|64............127|128...........191|192...........255| - * and on s390: - * |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255| * - * The main difference is that bit 0-63 (64b) or 0-31 (32b) in the bit - * number field needs to be reversed compared to the LSB0 encoded bit - * fields. This can be achieved by XOR with 0x3f (64b) or 0x1f (32b). + * The main difference is that bit 0-63 in the bit number field needs to be + * reversed compared to the LSB0 encoded bit fields. This can be achieved by + * XOR with 0x3f. * */ @@ -64,7 +59,6 @@ \ typecheck(unsigned long *, (__addr)); \ asm volatile( \ - __barrier \ __op_string " %0,%2,%1\n" \ __barrier \ : "=d" (__old), "+Q" (*(__addr)) \ @@ -276,12 +270,32 @@ static inline int test_bit(unsigned long nr, const volatile unsigned long *ptr) return (*addr >> (nr & 7)) & 1; } +static inline int test_and_set_bit_lock(unsigned long nr, + volatile unsigned long *ptr) +{ + if (test_bit(nr, ptr)) + return 1; + return test_and_set_bit(nr, ptr); +} + +static inline void clear_bit_unlock(unsigned long nr, + volatile unsigned long *ptr) +{ + smp_mb__before_atomic(); + clear_bit(nr, ptr); +} + +static inline void __clear_bit_unlock(unsigned long nr, + volatile unsigned long *ptr) +{ + smp_mb(); + __clear_bit(nr, ptr); +} + /* * Functions which use MSB0 bit numbering. - * On an s390x system the bits are numbered: + * The bits are numbered: * |0..............63|64............127|128...........191|192...........255| - * and on s390: - * |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255| */ unsigned long find_first_bit_inv(const unsigned long *addr, unsigned long size); unsigned long find_next_bit_inv(const unsigned long *addr, unsigned long size, @@ -446,7 +460,6 @@ static inline int fls(int word) #include <asm-generic/bitops/ffz.h> #include <asm-generic/bitops/find.h> #include <asm-generic/bitops/hweight.h> -#include <asm-generic/bitops/lock.h> #include <asm-generic/bitops/sched.h> #include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic-setbit.h> diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h index 0963392..0c5d8ee 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -5,6 +5,7 @@ #define _ASM_S390_CIO_H_ #include <linux/spinlock.h> +#include <linux/bitops.h> #include <asm/types.h> #define LPM_ANYPATH 0xff @@ -296,6 +297,15 @@ static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1, return 0; } +/** + * pathmask_to_pos() - find the position of the left-most bit in a pathmask + * @mask: pathmask with at least one bit set + */ +static inline u8 pathmask_to_pos(u8 mask) +{ + return 8 - ffs(mask); +} + void channel_subsystem_reinit(void); extern void css_schedule_reprobe(void); diff --git a/arch/s390/include/asm/cmb.h b/arch/s390/include/asm/cmb.h index 806eac1..ed2630c 100644 --- a/arch/s390/include/asm/cmb.h +++ b/arch/s390/include/asm/cmb.h @@ -6,6 +6,7 @@ struct ccw_device; extern int enable_cmf(struct ccw_device *cdev); extern int disable_cmf(struct ccw_device *cdev); +extern int __disable_cmf(struct ccw_device *cdev); extern u64 cmf_read(struct ccw_device *cdev, int index); extern int cmf_readall(struct ccw_device *cdev, struct cmbdata *data); diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h index 411464f..24ea694 100644 --- a/arch/s390/include/asm/cmpxchg.h +++ b/arch/s390/include/asm/cmpxchg.h @@ -32,7 +32,7 @@ __old; \ }) -#define __cmpxchg_double_op(p1, p2, o1, o2, n1, n2, insn) \ +#define __cmpxchg_double(p1, p2, o1, o2, n1, n2) \ ({ \ register __typeof__(*(p1)) __old1 asm("2") = (o1); \ register __typeof__(*(p2)) __old2 asm("3") = (o2); \ @@ -40,7 +40,7 @@ register __typeof__(*(p2)) __new2 asm("5") = (n2); \ int cc; \ asm volatile( \ - insn " %[old],%[new],%[ptr]\n" \ + " cdsg %[old],%[new],%[ptr]\n" \ " ipm %[cc]\n" \ " srl %[cc],28" \ : [cc] "=d" (cc), [old] "+d" (__old1), "+d" (__old2) \ @@ -50,30 +50,6 @@ !cc; \ }) -#define __cmpxchg_double_4(p1, p2, o1, o2, n1, n2) \ - __cmpxchg_double_op(p1, p2, o1, o2, n1, n2, "cds") - -#define __cmpxchg_double_8(p1, p2, o1, o2, n1, n2) \ - __cmpxchg_double_op(p1, p2, o1, o2, n1, n2, "cdsg") - -extern void __cmpxchg_double_called_with_bad_pointer(void); - -#define __cmpxchg_double(p1, p2, o1, o2, n1, n2) \ -({ \ - int __ret; \ - switch (sizeof(*(p1))) { \ - case 4: \ - __ret = __cmpxchg_double_4(p1, p2, o1, o2, n1, n2); \ - break; \ - case 8: \ - __ret = __cmpxchg_double_8(p1, p2, o1, o2, n1, n2); \ - break; \ - default: \ - __cmpxchg_double_called_with_bad_pointer(); \ - } \ - __ret; \ -}) - #define cmpxchg_double(p1, p2, o1, o2, n1, n2) \ ({ \ __typeof__(p1) __p1 = (p1); \ @@ -81,7 +57,7 @@ extern void __cmpxchg_double_called_with_bad_pointer(void); BUILD_BUG_ON(sizeof(*(p1)) != sizeof(long)); \ BUILD_BUG_ON(sizeof(*(p2)) != sizeof(long)); \ VM_BUG_ON((unsigned long)((__p1) + 1) != (unsigned long)(__p2));\ - __cmpxchg_double_8(__p1, __p2, o1, o2, n1, n2); \ + __cmpxchg_double(__p1, __p2, o1, o2, n1, n2); \ }) #define system_has_cmpxchg_double() 1 diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index 5243a86..9dd04b9 100644 --- a/arch/s390/include/asm/cpu_mf.h +++ b/arch/s390/include/asm/cpu_mf.h @@ -22,15 +22,10 @@ #define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ #define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ #define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ -#define CPU_MF_INT_RI_HALTED (1 << 5) /* run-time instr. halted */ -#define CPU_MF_INT_RI_BUF_FULL (1 << 4) /* run-time instr. program - buffer full */ - #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA) #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ CPU_MF_INT_SF_LSDA) -#define CPU_MF_INT_RI_MASK (CPU_MF_INT_RI_HALTED|CPU_MF_INT_RI_BUF_FULL) /* CPU measurement facility support */ static inline int cpum_cf_avail(void) diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h index 17a3735..d7697ab 100644 --- a/arch/s390/include/asm/ctl_reg.h +++ b/arch/s390/include/asm/ctl_reg.h @@ -46,8 +46,6 @@ static inline void __ctl_clear_bit(unsigned int cr, unsigned int bit) __ctl_load(reg, cr, cr); } -void __ctl_set_vx(void); - void smp_ctl_set_bit(int cr, int bit); void smp_ctl_clear_bit(int cr, int bit); diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h index 7e91c58..5fac921 100644 --- a/arch/s390/include/asm/diag.h +++ b/arch/s390/include/asm/diag.h @@ -8,6 +8,34 @@ #ifndef _ASM_S390_DIAG_H #define _ASM_S390_DIAG_H +#include <linux/percpu.h> + +enum diag_stat_enum { + DIAG_STAT_X008, + DIAG_STAT_X00C, + DIAG_STAT_X010, + DIAG_STAT_X014, + DIAG_STAT_X044, + DIAG_STAT_X064, + DIAG_STAT_X09C, + DIAG_STAT_X0DC, + DIAG_STAT_X204, + DIAG_STAT_X210, + DIAG_STAT_X224, + DIAG_STAT_X250, + DIAG_STAT_X258, + DIAG_STAT_X288, + DIAG_STAT_X2C4, + DIAG_STAT_X2FC, + DIAG_STAT_X304, + DIAG_STAT_X308, + DIAG_STAT_X500, + NR_DIAG_STAT +}; + +void diag_stat_inc(enum diag_stat_enum nr); +void diag_stat_inc_norecursion(enum diag_stat_enum nr); + /* * Diagnose 10: Release page range */ @@ -18,6 +46,7 @@ static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn) start_addr = start_pfn << PAGE_SHIFT; end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT; + diag_stat_inc(DIAG_STAT_X010); asm volatile( "0: diag %0,%1,0x10\n" "1:\n" diff --git a/arch/s390/include/asm/etr.h b/arch/s390/include/asm/etr.h index f7e5c36..105f90e 100644 --- a/arch/s390/include/asm/etr.h +++ b/arch/s390/include/asm/etr.h @@ -211,8 +211,9 @@ static inline int etr_ptff(void *ptff_block, unsigned int func) #define ETR_PTFF_SGS 0x43 /* set gross steering rate */ /* Functions needed by the machine check handler */ -void etr_switch_to_local(void); -void etr_sync_check(void); +int etr_switch_to_local(void); +int etr_sync_check(void); +void etr_queue_work(void); /* notifier for syncs */ extern struct atomic_notifier_head s390_epoch_delta_notifier; @@ -253,7 +254,8 @@ struct stp_sstpi { } __attribute__ ((packed)); /* Functions needed by the machine check handler */ -void stp_sync_check(void); -void stp_island_check(void); +int stp_sync_check(void); +int stp_island_check(void); +void stp_queue_work(void); #endif /* __S390_ETR_H */ diff --git a/arch/s390/include/asm/fpu/api.h b/arch/s390/include/asm/fpu/api.h new file mode 100644 index 0000000..5e04f3c --- /dev/null +++ b/arch/s390/include/asm/fpu/api.h @@ -0,0 +1,30 @@ +/* + * In-kernel FPU support functions + * + * Copyright IBM Corp. 2015 + * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + */ + +#ifndef _ASM_S390_FPU_API_H +#define _ASM_S390_FPU_API_H + +void save_fpu_regs(void); + +static inline int test_fp_ctl(u32 fpc) +{ + u32 orig_fpc; + int rc; + + asm volatile( + " efpc %1\n" + " sfpc %2\n" + "0: sfpc %1\n" + " la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc), "=d" (orig_fpc) + : "d" (fpc), "0" (-EINVAL)); + return rc; +} + +#endif /* _ASM_S390_FPU_API_H */ diff --git a/arch/s390/include/asm/fpu-internal.h b/arch/s390/include/asm/fpu/internal.h index 55dc2c0..2559b16 100644 --- a/arch/s390/include/asm/fpu-internal.h +++ b/arch/s390/include/asm/fpu/internal.h @@ -1,5 +1,5 @@ /* - * General floating pointer and vector register helpers + * FPU state and register content conversion primitives * * Copyright IBM Corp. 2015 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> @@ -8,50 +8,9 @@ #ifndef _ASM_S390_FPU_INTERNAL_H #define _ASM_S390_FPU_INTERNAL_H -#define FPU_USE_VX 1 /* Vector extension is active */ - -#ifndef __ASSEMBLY__ - -#include <linux/errno.h> #include <linux/string.h> -#include <asm/linkage.h> #include <asm/ctl_reg.h> -#include <asm/sigcontext.h> - -struct fpu { - __u32 fpc; /* Floating-point control */ - __u32 flags; - union { - void *regs; - freg_t *fprs; /* Floating-point register save area */ - __vector128 *vxrs; /* Vector register save area */ - }; -}; - -void save_fpu_regs(void); - -#define is_vx_fpu(fpu) (!!((fpu)->flags & FPU_USE_VX)) -#define is_vx_task(tsk) (!!((tsk)->thread.fpu.flags & FPU_USE_VX)) - -/* VX array structure for address operand constraints in inline assemblies */ -struct vx_array { __vector128 _[__NUM_VXRS]; }; - -static inline int test_fp_ctl(u32 fpc) -{ - u32 orig_fpc; - int rc; - - asm volatile( - " efpc %1\n" - " sfpc %2\n" - "0: sfpc %1\n" - " la %0,0\n" - "1:\n" - EX_TABLE(0b,1b) - : "=d" (rc), "=d" (orig_fpc) - : "d" (fpc), "0" (-EINVAL)); - return rc; -} +#include <asm/fpu/types.h> static inline void save_vx_regs_safe(__vector128 *vxrs) { @@ -89,7 +48,7 @@ static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs) static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu) { fpregs->pad = 0; - if (is_vx_fpu(fpu)) + if (MACHINE_HAS_VX) convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs); else memcpy((freg_t *)&fpregs->fprs, fpu->fprs, @@ -98,13 +57,11 @@ static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu) static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu) { - if (is_vx_fpu(fpu)) + if (MACHINE_HAS_VX) convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs); else memcpy(fpu->fprs, (freg_t *)&fpregs->fprs, sizeof(fpregs->fprs)); } -#endif - #endif /* _ASM_S390_FPU_INTERNAL_H */ diff --git a/arch/s390/include/asm/fpu/types.h b/arch/s390/include/asm/fpu/types.h new file mode 100644 index 0000000..14a8b0c --- /dev/null +++ b/arch/s390/include/asm/fpu/types.h @@ -0,0 +1,25 @@ +/* + * FPU data structures + * + * Copyright IBM Corp. 2015 + * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + */ + +#ifndef _ASM_S390_FPU_TYPES_H +#define _ASM_S390_FPU_TYPES_H + +#include <asm/sigcontext.h> + +struct fpu { + __u32 fpc; /* Floating-point control */ + union { + void *regs; + freg_t *fprs; /* Floating-point register save area */ + __vector128 *vxrs; /* Vector register save area */ + }; +}; + +/* VX array structure for address operand constraints in inline assemblies */ +struct vx_array { __vector128 _[__NUM_VXRS]; }; + +#endif /* _ASM_S390_FPU_TYPES_H */ diff --git a/arch/s390/include/asm/idle.h b/arch/s390/include/asm/idle.h index 113cd96..51ff96d 100644 --- a/arch/s390/include/asm/idle.h +++ b/arch/s390/include/asm/idle.h @@ -24,4 +24,6 @@ struct s390_idle_data { extern struct device_attribute dev_attr_idle_count; extern struct device_attribute dev_attr_idle_time_us; +void psw_idle(struct s390_idle_data *, unsigned long); + #endif /* _S390_IDLE_H */ diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index ff95d15..f97b055 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -47,7 +47,6 @@ enum interruption_class { IRQEXT_IUC, IRQEXT_CMS, IRQEXT_CMC, - IRQEXT_CMR, IRQEXT_FTP, IRQIO_CIO, IRQIO_QAI, @@ -96,6 +95,19 @@ enum irq_subclass { IRQ_SUBCLASS_SERVICE_SIGNAL = 9, }; +#define CR0_IRQ_SUBCLASS_MASK \ + ((1UL << (63 - 30)) /* Warning Track */ | \ + (1UL << (63 - 48)) /* Malfunction Alert */ | \ + (1UL << (63 - 49)) /* Emergency Signal */ | \ + (1UL << (63 - 50)) /* External Call */ | \ + (1UL << (63 - 52)) /* Clock Comparator */ | \ + (1UL << (63 - 53)) /* CPU Timer */ | \ + (1UL << (63 - 54)) /* Service Signal */ | \ + (1UL << (63 - 57)) /* Interrupt Key */ | \ + (1UL << (63 - 58)) /* Measurement Alert */ | \ + (1UL << (63 - 59)) /* Timing Alert */ | \ + (1UL << (63 - 62))) /* IUCV */ + void irq_subclass_register(enum irq_subclass subclass); void irq_subclass_unregister(enum irq_subclass subclass); diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 8ced426..7f65430 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -22,7 +22,7 @@ #include <linux/kvm.h> #include <asm/debug.h> #include <asm/cpu.h> -#include <asm/fpu-internal.h> +#include <asm/fpu/api.h> #include <asm/isc.h> #define KVM_MAX_VCPUS 64 diff --git a/arch/s390/include/asm/kvm_para.h b/arch/s390/include/asm/kvm_para.h index e0f8423..4139305 100644 --- a/arch/s390/include/asm/kvm_para.h +++ b/arch/s390/include/asm/kvm_para.h @@ -27,10 +27,9 @@ #define __S390_KVM_PARA_H #include <uapi/asm/kvm_para.h> +#include <asm/diag.h> - - -static inline long kvm_hypercall0(unsigned long nr) +static inline long __kvm_hypercall0(unsigned long nr) { register unsigned long __nr asm("1") = nr; register long __rc asm("2"); @@ -40,7 +39,13 @@ static inline long kvm_hypercall0(unsigned long nr) return __rc; } -static inline long kvm_hypercall1(unsigned long nr, unsigned long p1) +static inline long kvm_hypercall0(unsigned long nr) +{ + diag_stat_inc(DIAG_STAT_X500); + return __kvm_hypercall0(nr); +} + +static inline long __kvm_hypercall1(unsigned long nr, unsigned long p1) { register unsigned long __nr asm("1") = nr; register unsigned long __p1 asm("2") = p1; @@ -51,7 +56,13 @@ static inline long kvm_hypercall1(unsigned long nr, unsigned long p1) return __rc; } -static inline long kvm_hypercall2(unsigned long nr, unsigned long p1, +static inline long kvm_hypercall1(unsigned long nr, unsigned long p1) +{ + diag_stat_inc(DIAG_STAT_X500); + return __kvm_hypercall1(nr, p1); +} + +static inline long __kvm_hypercall2(unsigned long nr, unsigned long p1, unsigned long p2) { register unsigned long __nr asm("1") = nr; @@ -65,7 +76,14 @@ static inline long kvm_hypercall2(unsigned long nr, unsigned long p1, return __rc; } -static inline long kvm_hypercall3(unsigned long nr, unsigned long p1, +static inline long kvm_hypercall2(unsigned long nr, unsigned long p1, + unsigned long p2) +{ + diag_stat_inc(DIAG_STAT_X500); + return __kvm_hypercall2(nr, p1, p2); +} + +static inline long __kvm_hypercall3(unsigned long nr, unsigned long p1, unsigned long p2, unsigned long p3) { register unsigned long __nr asm("1") = nr; @@ -80,8 +98,14 @@ static inline long kvm_hypercall3(unsigned long nr, unsigned long p1, return __rc; } +static inline long kvm_hypercall3(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3) +{ + diag_stat_inc(DIAG_STAT_X500); + return __kvm_hypercall3(nr, p1, p2, p3); +} -static inline long kvm_hypercall4(unsigned long nr, unsigned long p1, +static inline long __kvm_hypercall4(unsigned long nr, unsigned long p1, unsigned long p2, unsigned long p3, unsigned long p4) { @@ -98,7 +122,15 @@ static inline long kvm_hypercall4(unsigned long nr, unsigned long p1, return __rc; } -static inline long kvm_hypercall5(unsigned long nr, unsigned long p1, +static inline long kvm_hypercall4(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3, + unsigned long p4) +{ + diag_stat_inc(DIAG_STAT_X500); + return __kvm_hypercall4(nr, p1, p2, p3, p4); +} + +static inline long __kvm_hypercall5(unsigned long nr, unsigned long p1, unsigned long p2, unsigned long p3, unsigned long p4, unsigned long p5) { @@ -116,7 +148,15 @@ static inline long kvm_hypercall5(unsigned long nr, unsigned long p1, return __rc; } -static inline long kvm_hypercall6(unsigned long nr, unsigned long p1, +static inline long kvm_hypercall5(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3, + unsigned long p4, unsigned long p5) +{ + diag_stat_inc(DIAG_STAT_X500); + return __kvm_hypercall5(nr, p1, p2, p3, p4, p5); +} + +static inline long __kvm_hypercall6(unsigned long nr, unsigned long p1, unsigned long p2, unsigned long p3, unsigned long p4, unsigned long p5, unsigned long p6) @@ -137,6 +177,15 @@ static inline long kvm_hypercall6(unsigned long nr, unsigned long p1, return __rc; } +static inline long kvm_hypercall6(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3, + unsigned long p4, unsigned long p5, + unsigned long p6) +{ + diag_stat_inc(DIAG_STAT_X500); + return __kvm_hypercall6(nr, p1, p2, p3, p4, p5, p6); +} + /* kvm on s390 is always paravirtualization enabled */ static inline int kvm_para_available(void) { diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 663f23e..afe1cfe 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -67,7 +67,7 @@ struct _lowcore { __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */ __u32 stfl_fac_list; /* 0x00c8 */ __u8 pad_0x00cc[0x00e8-0x00cc]; /* 0x00cc */ - __u32 mcck_interruption_code[2]; /* 0x00e8 */ + __u64 mcck_interruption_code; /* 0x00e8 */ __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */ __u32 external_damage_code; /* 0x00f4 */ __u64 failing_storage_address; /* 0x00f8 */ @@ -132,7 +132,14 @@ struct _lowcore { /* Address space pointer. */ __u64 kernel_asce; /* 0x0358 */ __u64 user_asce; /* 0x0360 */ - __u64 current_pid; /* 0x0368 */ + + /* + * The lpp and current_pid fields form a + * 64-bit value that is set as program + * parameter with the LPP instruction. + */ + __u32 lpp; /* 0x0368 */ + __u32 current_pid; /* 0x036c */ /* SMP info area */ __u32 cpu_nr; /* 0x0370 */ diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h index 3027a5a..b75fd91 100644 --- a/arch/s390/include/asm/nmi.h +++ b/arch/s390/include/asm/nmi.h @@ -11,51 +11,62 @@ #ifndef _ASM_S390_NMI_H #define _ASM_S390_NMI_H +#include <linux/const.h> #include <linux/types.h> -struct mci { - __u32 sd : 1; /* 00 system damage */ - __u32 pd : 1; /* 01 instruction-processing damage */ - __u32 sr : 1; /* 02 system recovery */ - __u32 : 1; /* 03 */ - __u32 cd : 1; /* 04 timing-facility damage */ - __u32 ed : 1; /* 05 external damage */ - __u32 : 1; /* 06 */ - __u32 dg : 1; /* 07 degradation */ - __u32 w : 1; /* 08 warning pending */ - __u32 cp : 1; /* 09 channel-report pending */ - __u32 sp : 1; /* 10 service-processor damage */ - __u32 ck : 1; /* 11 channel-subsystem damage */ - __u32 : 2; /* 12-13 */ - __u32 b : 1; /* 14 backed up */ - __u32 : 1; /* 15 */ - __u32 se : 1; /* 16 storage error uncorrected */ - __u32 sc : 1; /* 17 storage error corrected */ - __u32 ke : 1; /* 18 storage-key error uncorrected */ - __u32 ds : 1; /* 19 storage degradation */ - __u32 wp : 1; /* 20 psw mwp validity */ - __u32 ms : 1; /* 21 psw mask and key validity */ - __u32 pm : 1; /* 22 psw program mask and cc validity */ - __u32 ia : 1; /* 23 psw instruction address validity */ - __u32 fa : 1; /* 24 failing storage address validity */ - __u32 vr : 1; /* 25 vector register validity */ - __u32 ec : 1; /* 26 external damage code validity */ - __u32 fp : 1; /* 27 floating point register validity */ - __u32 gr : 1; /* 28 general register validity */ - __u32 cr : 1; /* 29 control register validity */ - __u32 : 1; /* 30 */ - __u32 st : 1; /* 31 storage logical validity */ - __u32 ie : 1; /* 32 indirect storage error */ - __u32 ar : 1; /* 33 access register validity */ - __u32 da : 1; /* 34 delayed access exception */ - __u32 : 7; /* 35-41 */ - __u32 pr : 1; /* 42 tod programmable register validity */ - __u32 fc : 1; /* 43 fp control register validity */ - __u32 ap : 1; /* 44 ancillary report */ - __u32 : 1; /* 45 */ - __u32 ct : 1; /* 46 cpu timer validity */ - __u32 cc : 1; /* 47 clock comparator validity */ - __u32 : 16; /* 47-63 */ +#define MCCK_CODE_SYSTEM_DAMAGE _BITUL(63) +#define MCCK_CODE_CPU_TIMER_VALID _BITUL(63 - 46) +#define MCCK_CODE_PSW_MWP_VALID _BITUL(63 - 20) +#define MCCK_CODE_PSW_IA_VALID _BITUL(63 - 23) + +#ifndef __ASSEMBLY__ + +union mci { + unsigned long val; + struct { + u64 sd : 1; /* 00 system damage */ + u64 pd : 1; /* 01 instruction-processing damage */ + u64 sr : 1; /* 02 system recovery */ + u64 : 1; /* 03 */ + u64 cd : 1; /* 04 timing-facility damage */ + u64 ed : 1; /* 05 external damage */ + u64 : 1; /* 06 */ + u64 dg : 1; /* 07 degradation */ + u64 w : 1; /* 08 warning pending */ + u64 cp : 1; /* 09 channel-report pending */ + u64 sp : 1; /* 10 service-processor damage */ + u64 ck : 1; /* 11 channel-subsystem damage */ + u64 : 2; /* 12-13 */ + u64 b : 1; /* 14 backed up */ + u64 : 1; /* 15 */ + u64 se : 1; /* 16 storage error uncorrected */ + u64 sc : 1; /* 17 storage error corrected */ + u64 ke : 1; /* 18 storage-key error uncorrected */ + u64 ds : 1; /* 19 storage degradation */ + u64 wp : 1; /* 20 psw mwp validity */ + u64 ms : 1; /* 21 psw mask and key validity */ + u64 pm : 1; /* 22 psw program mask and cc validity */ + u64 ia : 1; /* 23 psw instruction address validity */ + u64 fa : 1; /* 24 failing storage address validity */ + u64 vr : 1; /* 25 vector register validity */ + u64 ec : 1; /* 26 external damage code validity */ + u64 fp : 1; /* 27 floating point register validity */ + u64 gr : 1; /* 28 general register validity */ + u64 cr : 1; /* 29 control register validity */ + u64 : 1; /* 30 */ + u64 st : 1; /* 31 storage logical validity */ + u64 ie : 1; /* 32 indirect storage error */ + u64 ar : 1; /* 33 access register validity */ + u64 da : 1; /* 34 delayed access exception */ + u64 : 7; /* 35-41 */ + u64 pr : 1; /* 42 tod programmable register validity */ + u64 fc : 1; /* 43 fp control register validity */ + u64 ap : 1; /* 44 ancillary report */ + u64 : 1; /* 45 */ + u64 ct : 1; /* 46 cpu timer validity */ + u64 cc : 1; /* 47 clock comparator validity */ + u64 : 16; /* 47-63 */ + }; }; struct pt_regs; @@ -63,4 +74,5 @@ struct pt_regs; extern void s390_handle_mcck(void); extern void s390_do_machine_check(struct pt_regs *regs); +#endif /* __ASSEMBLY__ */ #endif /* _ASM_S390_NMI_H */ diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index bdb2f51..024f85f 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -193,9 +193,15 @@ static inline int is_module_addr(void *addr) #define _PAGE_UNUSED 0x080 /* SW bit for pgste usage state */ #define __HAVE_ARCH_PTE_SPECIAL +#ifdef CONFIG_MEM_SOFT_DIRTY +#define _PAGE_SOFT_DIRTY 0x002 /* SW pte soft dirty bit */ +#else +#define _PAGE_SOFT_DIRTY 0x000 +#endif + /* Set of bits not changed in pte_modify */ #define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_DIRTY | \ - _PAGE_YOUNG) + _PAGE_YOUNG | _PAGE_SOFT_DIRTY) /* * handle_pte_fault uses pte_present and pte_none to find out the pte type @@ -285,6 +291,12 @@ static inline int is_module_addr(void *addr) #define _SEGMENT_ENTRY_READ 0x0002 /* SW segment read bit */ #define _SEGMENT_ENTRY_WRITE 0x0001 /* SW segment write bit */ +#ifdef CONFIG_MEM_SOFT_DIRTY +#define _SEGMENT_ENTRY_SOFT_DIRTY 0x4000 /* SW segment soft dirty bit */ +#else +#define _SEGMENT_ENTRY_SOFT_DIRTY 0x0000 /* SW segment soft dirty bit */ +#endif + /* * Segment table entry encoding (R = read-only, I = invalid, y = young bit): * dy..R...I...wr @@ -589,6 +601,43 @@ static inline int pmd_protnone(pmd_t pmd) } #endif +static inline int pte_soft_dirty(pte_t pte) +{ + return pte_val(pte) & _PAGE_SOFT_DIRTY; +} +#define pte_swp_soft_dirty pte_soft_dirty + +static inline pte_t pte_mksoft_dirty(pte_t pte) +{ + pte_val(pte) |= _PAGE_SOFT_DIRTY; + return pte; +} +#define pte_swp_mksoft_dirty pte_mksoft_dirty + +static inline pte_t pte_clear_soft_dirty(pte_t pte) +{ + pte_val(pte) &= ~_PAGE_SOFT_DIRTY; + return pte; +} +#define pte_swp_clear_soft_dirty pte_clear_soft_dirty + +static inline int pmd_soft_dirty(pmd_t pmd) +{ + return pmd_val(pmd) & _SEGMENT_ENTRY_SOFT_DIRTY; +} + +static inline pmd_t pmd_mksoft_dirty(pmd_t pmd) +{ + pmd_val(pmd) |= _SEGMENT_ENTRY_SOFT_DIRTY; + return pmd; +} + +static inline pmd_t pmd_clear_soft_dirty(pmd_t pmd) +{ + pmd_val(pmd) &= ~_SEGMENT_ENTRY_SOFT_DIRTY; + return pmd; +} + static inline pgste_t pgste_get_lock(pte_t *ptep) { unsigned long new = 0; @@ -889,7 +938,7 @@ static inline pte_t pte_mkclean(pte_t pte) static inline pte_t pte_mkdirty(pte_t pte) { - pte_val(pte) |= _PAGE_DIRTY; + pte_val(pte) |= _PAGE_DIRTY | _PAGE_SOFT_DIRTY; if (pte_val(pte) & _PAGE_WRITE) pte_val(pte) &= ~_PAGE_PROTECT; return pte; @@ -1218,8 +1267,10 @@ static inline int ptep_set_access_flags(struct vm_area_struct *vma, pte_t entry, int dirty) { pgste_t pgste; + pte_t oldpte; - if (pte_same(*ptep, entry)) + oldpte = *ptep; + if (pte_same(oldpte, entry)) return 0; if (mm_has_pgste(vma->vm_mm)) { pgste = pgste_get_lock(ptep); @@ -1229,7 +1280,8 @@ static inline int ptep_set_access_flags(struct vm_area_struct *vma, ptep_flush_direct(vma->vm_mm, address, ptep); if (mm_has_pgste(vma->vm_mm)) { - pgste_set_key(ptep, pgste, entry, vma->vm_mm); + if (pte_val(oldpte) & _PAGE_INVALID) + pgste_set_key(ptep, pgste, entry, vma->vm_mm); pgste = pgste_set_pte(ptep, pgste, entry); pgste_set_unlock(ptep, pgste); } else @@ -1340,7 +1392,8 @@ static inline pmd_t pmd_mkclean(pmd_t pmd) static inline pmd_t pmd_mkdirty(pmd_t pmd) { if (pmd_large(pmd)) { - pmd_val(pmd) |= _SEGMENT_ENTRY_DIRTY; + pmd_val(pmd) |= _SEGMENT_ENTRY_DIRTY | + _SEGMENT_ENTRY_SOFT_DIRTY; if (pmd_val(pmd) & _SEGMENT_ENTRY_WRITE) pmd_val(pmd) &= ~_SEGMENT_ENTRY_PROTECT; } @@ -1371,7 +1424,8 @@ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) if (pmd_large(pmd)) { pmd_val(pmd) &= _SEGMENT_ENTRY_ORIGIN_LARGE | _SEGMENT_ENTRY_DIRTY | _SEGMENT_ENTRY_YOUNG | - _SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_SPLIT; + _SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_SPLIT | + _SEGMENT_ENTRY_SOFT_DIRTY; pmd_val(pmd) |= massage_pgprot_pmd(newprot); if (!(pmd_val(pmd) & _SEGMENT_ENTRY_DIRTY)) pmd_val(pmd) |= _SEGMENT_ENTRY_PROTECT; diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 085fb0d..b16c3d0 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -11,15 +11,19 @@ #ifndef __ASM_S390_PROCESSOR_H #define __ASM_S390_PROCESSOR_H +#include <linux/const.h> + #define CIF_MCCK_PENDING 0 /* machine check handling is pending */ #define CIF_ASCE 1 /* user asce needs fixup / uaccess */ #define CIF_NOHZ_DELAY 2 /* delay HZ disable for a tick */ -#define CIF_FPU 3 /* restore vector registers */ +#define CIF_FPU 3 /* restore FPU registers */ +#define CIF_IGNORE_IRQ 4 /* ignore interrupt (for udelay) */ -#define _CIF_MCCK_PENDING (1<<CIF_MCCK_PENDING) -#define _CIF_ASCE (1<<CIF_ASCE) -#define _CIF_NOHZ_DELAY (1<<CIF_NOHZ_DELAY) -#define _CIF_FPU (1<<CIF_FPU) +#define _CIF_MCCK_PENDING _BITUL(CIF_MCCK_PENDING) +#define _CIF_ASCE _BITUL(CIF_ASCE) +#define _CIF_NOHZ_DELAY _BITUL(CIF_NOHZ_DELAY) +#define _CIF_FPU _BITUL(CIF_FPU) +#define _CIF_IGNORE_IRQ _BITUL(CIF_IGNORE_IRQ) #ifndef __ASSEMBLY__ @@ -30,21 +34,22 @@ #include <asm/ptrace.h> #include <asm/setup.h> #include <asm/runtime_instr.h> -#include <asm/fpu-internal.h> +#include <asm/fpu/types.h> +#include <asm/fpu/internal.h> static inline void set_cpu_flag(int flag) { - S390_lowcore.cpu_flags |= (1U << flag); + S390_lowcore.cpu_flags |= (1UL << flag); } static inline void clear_cpu_flag(int flag) { - S390_lowcore.cpu_flags &= ~(1U << flag); + S390_lowcore.cpu_flags &= ~(1UL << flag); } static inline int test_cpu_flag(int flag) { - return !!(S390_lowcore.cpu_flags & (1U << flag)); + return !!(S390_lowcore.cpu_flags & (1UL << flag)); } #define arch_needs_cpu() test_cpu_flag(CIF_NOHZ_DELAY) @@ -102,7 +107,6 @@ struct thread_struct { struct list_head list; /* cpu runtime instrumentation */ struct runtime_instr_cb *ri_cb; - int ri_signum; unsigned char trap_tdb[256]; /* Transaction abort diagnose block */ }; @@ -139,8 +143,10 @@ struct stack_frame { #define ARCH_MIN_TASKALIGN 8 +extern __vector128 init_task_fpu_regs[__NUM_VXRS]; #define INIT_THREAD { \ .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \ + .fpu.regs = (void *)&init_task_fpu_regs, \ } /* @@ -217,7 +223,7 @@ static inline void __load_psw(psw_t psw) * Set PSW mask to specified value, while leaving the * PSW addr pointing to the next instruction. */ -static inline void __load_psw_mask (unsigned long mask) +static inline void __load_psw_mask(unsigned long mask) { unsigned long addr; psw_t psw; @@ -243,6 +249,16 @@ static inline unsigned long __extract_psw(void) return (((unsigned long) reg1) << 32) | ((unsigned long) reg2); } +static inline void local_mcck_enable(void) +{ + __load_psw_mask(__extract_psw() | PSW_MASK_MCHECK); +} + +static inline void local_mcck_disable(void) +{ + __load_psw_mask(__extract_psw() & ~PSW_MASK_MCHECK); +} + /* * Rewind PSW instruction address by specified number of bytes. */ @@ -266,65 +282,14 @@ void enabled_wait(void); */ static inline void __noreturn disabled_wait(unsigned long code) { - unsigned long ctl_buf; - psw_t dw_psw; - - dw_psw.mask = PSW_MASK_BASE | PSW_MASK_WAIT | PSW_MASK_BA | PSW_MASK_EA; - dw_psw.addr = code; - /* - * Store status and then load disabled wait psw, - * the processor is dead afterwards - */ - asm volatile( - " stctg 0,0,0(%2)\n" - " ni 4(%2),0xef\n" /* switch off protection */ - " lctlg 0,0,0(%2)\n" - " lghi 1,0x1000\n" - " stpt 0x328(1)\n" /* store timer */ - " stckc 0x330(1)\n" /* store clock comparator */ - " stpx 0x318(1)\n" /* store prefix register */ - " stam 0,15,0x340(1)\n"/* store access registers */ - " stfpc 0x31c(1)\n" /* store fpu control */ - " std 0,0x200(1)\n" /* store f0 */ - " std 1,0x208(1)\n" /* store f1 */ - " std 2,0x210(1)\n" /* store f2 */ - " std 3,0x218(1)\n" /* store f3 */ - " std 4,0x220(1)\n" /* store f4 */ - " std 5,0x228(1)\n" /* store f5 */ - " std 6,0x230(1)\n" /* store f6 */ - " std 7,0x238(1)\n" /* store f7 */ - " std 8,0x240(1)\n" /* store f8 */ - " std 9,0x248(1)\n" /* store f9 */ - " std 10,0x250(1)\n" /* store f10 */ - " std 11,0x258(1)\n" /* store f11 */ - " std 12,0x260(1)\n" /* store f12 */ - " std 13,0x268(1)\n" /* store f13 */ - " std 14,0x270(1)\n" /* store f14 */ - " std 15,0x278(1)\n" /* store f15 */ - " stmg 0,15,0x280(1)\n"/* store general registers */ - " stctg 0,15,0x380(1)\n"/* store control registers */ - " oi 0x384(1),0x10\n"/* fake protection bit */ - " lpswe 0(%1)" - : "=m" (ctl_buf) - : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0", "1"); - while (1); -} + psw_t psw; -/* - * Use to set psw mask except for the first byte which - * won't be changed by this function. - */ -static inline void -__set_psw_mask(unsigned long mask) -{ - __load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8))); + psw.mask = PSW_MASK_BASE | PSW_MASK_WAIT | PSW_MASK_BA | PSW_MASK_EA; + psw.addr = code; + __load_psw(psw); + while (1); } -#define local_mcck_enable() \ - __set_psw_mask(PSW_KERNEL_BITS | PSW_MASK_DAT | PSW_MASK_MCHECK) -#define local_mcck_disable() \ - __set_psw_mask(PSW_KERNEL_BITS | PSW_MASK_DAT) - /* * Basic Machine Check/Program Check Handler. */ diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index 6feda25..37cbc50 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -6,13 +6,14 @@ #ifndef _S390_PTRACE_H #define _S390_PTRACE_H +#include <linux/const.h> #include <uapi/asm/ptrace.h> #define PIF_SYSCALL 0 /* inside a system call */ #define PIF_PER_TRAP 1 /* deliver sigtrap on return to user */ -#define _PIF_SYSCALL (1<<PIF_SYSCALL) -#define _PIF_PER_TRAP (1<<PIF_PER_TRAP) +#define _PIF_SYSCALL _BITUL(PIF_SYSCALL) +#define _PIF_PER_TRAP _BITUL(PIF_PER_TRAP) #ifndef __ASSEMBLY__ @@ -128,17 +129,17 @@ struct per_struct_kernel { static inline void set_pt_regs_flag(struct pt_regs *regs, int flag) { - regs->flags |= (1U << flag); + regs->flags |= (1UL << flag); } static inline void clear_pt_regs_flag(struct pt_regs *regs, int flag) { - regs->flags &= ~(1U << flag); + regs->flags &= ~(1UL << flag); } static inline int test_pt_regs_flag(struct pt_regs *regs, int flag) { - return !!(regs->flags & (1U << flag)); + return !!(regs->flags & (1UL << flag)); } /* diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index b8ffc1b..2353766 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -5,11 +5,38 @@ #ifndef _ASM_S390_SETUP_H #define _ASM_S390_SETUP_H +#include <linux/const.h> #include <uapi/asm/setup.h> #define PARMAREA 0x10400 +/* + * Machine features detected in head.S + */ + +#define MACHINE_FLAG_VM _BITUL(0) +#define MACHINE_FLAG_IEEE _BITUL(1) +#define MACHINE_FLAG_CSP _BITUL(2) +#define MACHINE_FLAG_MVPG _BITUL(3) +#define MACHINE_FLAG_DIAG44 _BITUL(4) +#define MACHINE_FLAG_IDTE _BITUL(5) +#define MACHINE_FLAG_DIAG9C _BITUL(6) +#define MACHINE_FLAG_KVM _BITUL(8) +#define MACHINE_FLAG_ESOP _BITUL(9) +#define MACHINE_FLAG_EDAT1 _BITUL(10) +#define MACHINE_FLAG_EDAT2 _BITUL(11) +#define MACHINE_FLAG_LPAR _BITUL(12) +#define MACHINE_FLAG_LPP _BITUL(13) +#define MACHINE_FLAG_TOPOLOGY _BITUL(14) +#define MACHINE_FLAG_TE _BITUL(15) +#define MACHINE_FLAG_TLB_LC _BITUL(17) +#define MACHINE_FLAG_VX _BITUL(18) +#define MACHINE_FLAG_CAD _BITUL(19) + +#define LPP_MAGIC _BITUL(31) +#define LPP_PFAULT_PID_MASK _AC(0xffffffff, UL) + #ifndef __ASSEMBLY__ #include <asm/lowcore.h> @@ -28,29 +55,6 @@ extern unsigned long max_physmem_end; extern void detect_memory_memblock(void); -/* - * Machine features detected in head.S - */ - -#define MACHINE_FLAG_VM (1UL << 0) -#define MACHINE_FLAG_IEEE (1UL << 1) -#define MACHINE_FLAG_CSP (1UL << 2) -#define MACHINE_FLAG_MVPG (1UL << 3) -#define MACHINE_FLAG_DIAG44 (1UL << 4) -#define MACHINE_FLAG_IDTE (1UL << 5) -#define MACHINE_FLAG_DIAG9C (1UL << 6) -#define MACHINE_FLAG_KVM (1UL << 8) -#define MACHINE_FLAG_ESOP (1UL << 9) -#define MACHINE_FLAG_EDAT1 (1UL << 10) -#define MACHINE_FLAG_EDAT2 (1UL << 11) -#define MACHINE_FLAG_LPAR (1UL << 12) -#define MACHINE_FLAG_LPP (1UL << 13) -#define MACHINE_FLAG_TOPOLOGY (1UL << 14) -#define MACHINE_FLAG_TE (1UL << 15) -#define MACHINE_FLAG_TLB_LC (1UL << 17) -#define MACHINE_FLAG_VX (1UL << 18) -#define MACHINE_FLAG_CAD (1UL << 19) - #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h index 0e37cd0..63ebf37 100644 --- a/arch/s390/include/asm/spinlock.h +++ b/arch/s390/include/asm/spinlock.h @@ -87,7 +87,6 @@ static inline void arch_spin_unlock(arch_spinlock_t *lp) { typecheck(unsigned int, lp->lock); asm volatile( - __ASM_BARRIER "st %1,%0\n" : "+Q" (lp->lock) : "d" (0) @@ -169,7 +168,6 @@ static inline int arch_write_trylock_once(arch_rwlock_t *rw) \ typecheck(unsigned int *, ptr); \ asm volatile( \ - "bcr 14,0\n" \ op_string " %0,%2,%1\n" \ : "=d" (old_val), "+Q" (*ptr) \ : "d" (op_val) \ @@ -243,7 +241,6 @@ static inline void arch_write_unlock(arch_rwlock_t *rw) rw->owner = 0; asm volatile( - __ASM_BARRIER "st %1,%0\n" : "+Q" (rw->lock) : "d" (0) diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h index dcadfde..12d45f0 100644 --- a/arch/s390/include/asm/switch_to.h +++ b/arch/s390/include/asm/switch_to.h @@ -8,7 +8,7 @@ #define __ASM_SWITCH_TO_H #include <linux/thread_info.h> -#include <asm/fpu-internal.h> +#include <asm/fpu/api.h> #include <asm/ptrace.h> extern struct task_struct *__switch_to(void *, void *); diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index 4c27ec7..692b924 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -7,6 +7,8 @@ #ifndef _ASM_THREAD_INFO_H #define _ASM_THREAD_INFO_H +#include <linux/const.h> + /* * Size of kernel stack for each process */ @@ -83,16 +85,16 @@ void arch_release_task_struct(struct task_struct *tsk); #define TIF_BLOCK_STEP 20 /* This task is block stepped */ #define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */ -#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) -#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) -#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) -#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) -#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) -#define _TIF_SECCOMP (1<<TIF_SECCOMP) -#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) -#define _TIF_UPROBE (1<<TIF_UPROBE) -#define _TIF_31BIT (1<<TIF_31BIT) -#define _TIF_SINGLE_STEP (1<<TIF_SINGLE_STEP) +#define _TIF_NOTIFY_RESUME _BITUL(TIF_NOTIFY_RESUME) +#define _TIF_SIGPENDING _BITUL(TIF_SIGPENDING) +#define _TIF_NEED_RESCHED _BITUL(TIF_NEED_RESCHED) +#define _TIF_SYSCALL_TRACE _BITUL(TIF_SYSCALL_TRACE) +#define _TIF_SYSCALL_AUDIT _BITUL(TIF_SYSCALL_AUDIT) +#define _TIF_SECCOMP _BITUL(TIF_SECCOMP) +#define _TIF_SYSCALL_TRACEPOINT _BITUL(TIF_SYSCALL_TRACEPOINT) +#define _TIF_UPROBE _BITUL(TIF_UPROBE) +#define _TIF_31BIT _BITUL(TIF_31BIT) +#define _TIF_SINGLE_STEP _BITUL(TIF_SINGLE_STEP) #define is_32bit_task() (test_thread_flag(TIF_31BIT)) diff --git a/arch/s390/include/asm/trace/diag.h b/arch/s390/include/asm/trace/diag.h new file mode 100644 index 0000000..776f307 --- /dev/null +++ b/arch/s390/include/asm/trace/diag.h @@ -0,0 +1,43 @@ +/* + * Tracepoint header for s390 diagnose calls + * + * Copyright IBM Corp. 2015 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM s390 + +#if !defined(_TRACE_S390_DIAG_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_S390_DIAG_H + +#include <linux/tracepoint.h> + +#undef TRACE_INCLUDE_PATH +#undef TRACE_INCLUDE_FILE + +#define TRACE_INCLUDE_PATH asm/trace +#define TRACE_INCLUDE_FILE diag + +TRACE_EVENT(diagnose, + TP_PROTO(unsigned short nr), + TP_ARGS(nr), + TP_STRUCT__entry( + __field(unsigned short, nr) + ), + TP_fast_assign( + __entry->nr = nr; + ), + TP_printk("nr=0x%x", __entry->nr) +); + +#ifdef CONFIG_TRACEPOINTS +void trace_diagnose_norecursion(int diag_nr); +#else +static inline void trace_diagnose_norecursion(int diag_nr) { } +#endif + +#endif /* _TRACE_S390_DIAG_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index b756c63..dc167a2 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -66,6 +66,8 @@ obj-$(CONFIG_UPROBES) += uprobes.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o +obj-$(CONFIG_TRACEPOINTS) += trace.o + # vdso obj-y += vdso64/ obj-$(CONFIG_COMPAT) += vdso32/ diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index 3aeeb1b..9cd248f 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -23,59 +23,64 @@ int main(void) { - DEFINE(__TASK_thread_info, offsetof(struct task_struct, stack)); - DEFINE(__TASK_thread, offsetof(struct task_struct, thread)); - DEFINE(__TASK_pid, offsetof(struct task_struct, pid)); + /* task struct offsets */ + OFFSET(__TASK_thread_info, task_struct, stack); + OFFSET(__TASK_thread, task_struct, thread); + OFFSET(__TASK_pid, task_struct, pid); BLANK(); - DEFINE(__THREAD_ksp, offsetof(struct thread_struct, ksp)); - DEFINE(__THREAD_FPU_fpc, offsetof(struct thread_struct, fpu.fpc)); - DEFINE(__THREAD_FPU_flags, offsetof(struct thread_struct, fpu.flags)); - DEFINE(__THREAD_FPU_regs, offsetof(struct thread_struct, fpu.regs)); - DEFINE(__THREAD_per_cause, offsetof(struct thread_struct, per_event.cause)); - DEFINE(__THREAD_per_address, offsetof(struct thread_struct, per_event.address)); - DEFINE(__THREAD_per_paid, offsetof(struct thread_struct, per_event.paid)); - DEFINE(__THREAD_trap_tdb, offsetof(struct thread_struct, trap_tdb)); + /* thread struct offsets */ + OFFSET(__THREAD_ksp, thread_struct, ksp); + OFFSET(__THREAD_FPU_fpc, thread_struct, fpu.fpc); + OFFSET(__THREAD_FPU_regs, thread_struct, fpu.regs); + OFFSET(__THREAD_per_cause, thread_struct, per_event.cause); + OFFSET(__THREAD_per_address, thread_struct, per_event.address); + OFFSET(__THREAD_per_paid, thread_struct, per_event.paid); + OFFSET(__THREAD_trap_tdb, thread_struct, trap_tdb); BLANK(); - DEFINE(__TI_task, offsetof(struct thread_info, task)); - DEFINE(__TI_flags, offsetof(struct thread_info, flags)); - DEFINE(__TI_sysc_table, offsetof(struct thread_info, sys_call_table)); - DEFINE(__TI_cpu, offsetof(struct thread_info, cpu)); - DEFINE(__TI_precount, offsetof(struct thread_info, preempt_count)); - DEFINE(__TI_user_timer, offsetof(struct thread_info, user_timer)); - DEFINE(__TI_system_timer, offsetof(struct thread_info, system_timer)); - DEFINE(__TI_last_break, offsetof(struct thread_info, last_break)); + /* thread info offsets */ + OFFSET(__TI_task, thread_info, task); + OFFSET(__TI_flags, thread_info, flags); + OFFSET(__TI_sysc_table, thread_info, sys_call_table); + OFFSET(__TI_cpu, thread_info, cpu); + OFFSET(__TI_precount, thread_info, preempt_count); + OFFSET(__TI_user_timer, thread_info, user_timer); + OFFSET(__TI_system_timer, thread_info, system_timer); + OFFSET(__TI_last_break, thread_info, last_break); BLANK(); - DEFINE(__PT_ARGS, offsetof(struct pt_regs, args)); - DEFINE(__PT_PSW, offsetof(struct pt_regs, psw)); - DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs)); - DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2)); - DEFINE(__PT_INT_CODE, offsetof(struct pt_regs, int_code)); - DEFINE(__PT_INT_PARM, offsetof(struct pt_regs, int_parm)); - DEFINE(__PT_INT_PARM_LONG, offsetof(struct pt_regs, int_parm_long)); - DEFINE(__PT_FLAGS, offsetof(struct pt_regs, flags)); + /* pt_regs offsets */ + OFFSET(__PT_ARGS, pt_regs, args); + OFFSET(__PT_PSW, pt_regs, psw); + OFFSET(__PT_GPRS, pt_regs, gprs); + OFFSET(__PT_ORIG_GPR2, pt_regs, orig_gpr2); + OFFSET(__PT_INT_CODE, pt_regs, int_code); + OFFSET(__PT_INT_PARM, pt_regs, int_parm); + OFFSET(__PT_INT_PARM_LONG, pt_regs, int_parm_long); + OFFSET(__PT_FLAGS, pt_regs, flags); DEFINE(__PT_SIZE, sizeof(struct pt_regs)); BLANK(); - DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain)); - DEFINE(__SF_GPRS, offsetof(struct stack_frame, gprs)); - DEFINE(__SF_EMPTY, offsetof(struct stack_frame, empty1)); + /* stack_frame offsets */ + OFFSET(__SF_BACKCHAIN, stack_frame, back_chain); + OFFSET(__SF_GPRS, stack_frame, gprs); + OFFSET(__SF_EMPTY, stack_frame, empty1); BLANK(); /* timeval/timezone offsets for use by vdso */ - DEFINE(__VDSO_UPD_COUNT, offsetof(struct vdso_data, tb_update_count)); - DEFINE(__VDSO_XTIME_STAMP, offsetof(struct vdso_data, xtime_tod_stamp)); - DEFINE(__VDSO_XTIME_SEC, offsetof(struct vdso_data, xtime_clock_sec)); - DEFINE(__VDSO_XTIME_NSEC, offsetof(struct vdso_data, xtime_clock_nsec)); - DEFINE(__VDSO_XTIME_CRS_SEC, offsetof(struct vdso_data, xtime_coarse_sec)); - DEFINE(__VDSO_XTIME_CRS_NSEC, offsetof(struct vdso_data, xtime_coarse_nsec)); - DEFINE(__VDSO_WTOM_SEC, offsetof(struct vdso_data, wtom_clock_sec)); - DEFINE(__VDSO_WTOM_NSEC, offsetof(struct vdso_data, wtom_clock_nsec)); - DEFINE(__VDSO_WTOM_CRS_SEC, offsetof(struct vdso_data, wtom_coarse_sec)); - DEFINE(__VDSO_WTOM_CRS_NSEC, offsetof(struct vdso_data, wtom_coarse_nsec)); - DEFINE(__VDSO_TIMEZONE, offsetof(struct vdso_data, tz_minuteswest)); - DEFINE(__VDSO_ECTG_OK, offsetof(struct vdso_data, ectg_available)); - DEFINE(__VDSO_TK_MULT, offsetof(struct vdso_data, tk_mult)); - DEFINE(__VDSO_TK_SHIFT, offsetof(struct vdso_data, tk_shift)); - DEFINE(__VDSO_ECTG_BASE, offsetof(struct vdso_per_cpu_data, ectg_timer_base)); - DEFINE(__VDSO_ECTG_USER, offsetof(struct vdso_per_cpu_data, ectg_user_time)); + OFFSET(__VDSO_UPD_COUNT, vdso_data, tb_update_count); + OFFSET(__VDSO_XTIME_STAMP, vdso_data, xtime_tod_stamp); + OFFSET(__VDSO_XTIME_SEC, vdso_data, xtime_clock_sec); + OFFSET(__VDSO_XTIME_NSEC, vdso_data, xtime_clock_nsec); + OFFSET(__VDSO_XTIME_CRS_SEC, vdso_data, xtime_coarse_sec); + OFFSET(__VDSO_XTIME_CRS_NSEC, vdso_data, xtime_coarse_nsec); + OFFSET(__VDSO_WTOM_SEC, vdso_data, wtom_clock_sec); + OFFSET(__VDSO_WTOM_NSEC, vdso_data, wtom_clock_nsec); + OFFSET(__VDSO_WTOM_CRS_SEC, vdso_data, wtom_coarse_sec); + OFFSET(__VDSO_WTOM_CRS_NSEC, vdso_data, wtom_coarse_nsec); + OFFSET(__VDSO_TIMEZONE, vdso_data, tz_minuteswest); + OFFSET(__VDSO_ECTG_OK, vdso_data, ectg_available); + OFFSET(__VDSO_TK_MULT, vdso_data, tk_mult); + OFFSET(__VDSO_TK_SHIFT, vdso_data, tk_shift); + OFFSET(__VDSO_ECTG_BASE, vdso_per_cpu_data, ectg_timer_base); + OFFSET(__VDSO_ECTG_USER, vdso_per_cpu_data, ectg_user_time); + BLANK(); /* constants used by the vdso */ DEFINE(__CLOCK_REALTIME, CLOCK_REALTIME); DEFINE(__CLOCK_MONOTONIC, CLOCK_MONOTONIC); @@ -86,102 +91,105 @@ int main(void) DEFINE(__CLOCK_COARSE_RES, LOW_RES_NSEC); BLANK(); /* idle data offsets */ - DEFINE(__CLOCK_IDLE_ENTER, offsetof(struct s390_idle_data, clock_idle_enter)); - DEFINE(__CLOCK_IDLE_EXIT, offsetof(struct s390_idle_data, clock_idle_exit)); - DEFINE(__TIMER_IDLE_ENTER, offsetof(struct s390_idle_data, timer_idle_enter)); - DEFINE(__TIMER_IDLE_EXIT, offsetof(struct s390_idle_data, timer_idle_exit)); - /* lowcore offsets */ - DEFINE(__LC_EXT_PARAMS, offsetof(struct _lowcore, ext_params)); - DEFINE(__LC_EXT_CPU_ADDR, offsetof(struct _lowcore, ext_cpu_addr)); - DEFINE(__LC_EXT_INT_CODE, offsetof(struct _lowcore, ext_int_code)); - DEFINE(__LC_SVC_ILC, offsetof(struct _lowcore, svc_ilc)); - DEFINE(__LC_SVC_INT_CODE, offsetof(struct _lowcore, svc_code)); - DEFINE(__LC_PGM_ILC, offsetof(struct _lowcore, pgm_ilc)); - DEFINE(__LC_PGM_INT_CODE, offsetof(struct _lowcore, pgm_code)); - DEFINE(__LC_TRANS_EXC_CODE, offsetof(struct _lowcore, trans_exc_code)); - DEFINE(__LC_MON_CLASS_NR, offsetof(struct _lowcore, mon_class_num)); - DEFINE(__LC_PER_CODE, offsetof(struct _lowcore, per_code)); - DEFINE(__LC_PER_ATMID, offsetof(struct _lowcore, per_atmid)); - DEFINE(__LC_PER_ADDRESS, offsetof(struct _lowcore, per_address)); - DEFINE(__LC_EXC_ACCESS_ID, offsetof(struct _lowcore, exc_access_id)); - DEFINE(__LC_PER_ACCESS_ID, offsetof(struct _lowcore, per_access_id)); - DEFINE(__LC_OP_ACCESS_ID, offsetof(struct _lowcore, op_access_id)); - DEFINE(__LC_AR_MODE_ID, offsetof(struct _lowcore, ar_mode_id)); - DEFINE(__LC_MON_CODE, offsetof(struct _lowcore, monitor_code)); - DEFINE(__LC_SUBCHANNEL_ID, offsetof(struct _lowcore, subchannel_id)); - DEFINE(__LC_SUBCHANNEL_NR, offsetof(struct _lowcore, subchannel_nr)); - DEFINE(__LC_IO_INT_PARM, offsetof(struct _lowcore, io_int_parm)); - DEFINE(__LC_IO_INT_WORD, offsetof(struct _lowcore, io_int_word)); - DEFINE(__LC_STFL_FAC_LIST, offsetof(struct _lowcore, stfl_fac_list)); - DEFINE(__LC_MCCK_CODE, offsetof(struct _lowcore, mcck_interruption_code)); - DEFINE(__LC_MCCK_EXT_DAM_CODE, offsetof(struct _lowcore, external_damage_code)); - DEFINE(__LC_RST_OLD_PSW, offsetof(struct _lowcore, restart_old_psw)); - DEFINE(__LC_EXT_OLD_PSW, offsetof(struct _lowcore, external_old_psw)); - DEFINE(__LC_SVC_OLD_PSW, offsetof(struct _lowcore, svc_old_psw)); - DEFINE(__LC_PGM_OLD_PSW, offsetof(struct _lowcore, program_old_psw)); - DEFINE(__LC_MCK_OLD_PSW, offsetof(struct _lowcore, mcck_old_psw)); - DEFINE(__LC_IO_OLD_PSW, offsetof(struct _lowcore, io_old_psw)); - DEFINE(__LC_RST_NEW_PSW, offsetof(struct _lowcore, restart_psw)); - DEFINE(__LC_EXT_NEW_PSW, offsetof(struct _lowcore, external_new_psw)); - DEFINE(__LC_SVC_NEW_PSW, offsetof(struct _lowcore, svc_new_psw)); - DEFINE(__LC_PGM_NEW_PSW, offsetof(struct _lowcore, program_new_psw)); - DEFINE(__LC_MCK_NEW_PSW, offsetof(struct _lowcore, mcck_new_psw)); - DEFINE(__LC_IO_NEW_PSW, offsetof(struct _lowcore, io_new_psw)); + OFFSET(__CLOCK_IDLE_ENTER, s390_idle_data, clock_idle_enter); + OFFSET(__CLOCK_IDLE_EXIT, s390_idle_data, clock_idle_exit); + OFFSET(__TIMER_IDLE_ENTER, s390_idle_data, timer_idle_enter); + OFFSET(__TIMER_IDLE_EXIT, s390_idle_data, timer_idle_exit); BLANK(); - DEFINE(__LC_SAVE_AREA_SYNC, offsetof(struct _lowcore, save_area_sync)); - DEFINE(__LC_SAVE_AREA_ASYNC, offsetof(struct _lowcore, save_area_async)); - DEFINE(__LC_SAVE_AREA_RESTART, offsetof(struct _lowcore, save_area_restart)); - DEFINE(__LC_CPU_FLAGS, offsetof(struct _lowcore, cpu_flags)); - DEFINE(__LC_RETURN_PSW, offsetof(struct _lowcore, return_psw)); - DEFINE(__LC_RETURN_MCCK_PSW, offsetof(struct _lowcore, return_mcck_psw)); - DEFINE(__LC_SYNC_ENTER_TIMER, offsetof(struct _lowcore, sync_enter_timer)); - DEFINE(__LC_ASYNC_ENTER_TIMER, offsetof(struct _lowcore, async_enter_timer)); - DEFINE(__LC_MCCK_ENTER_TIMER, offsetof(struct _lowcore, mcck_enter_timer)); - DEFINE(__LC_EXIT_TIMER, offsetof(struct _lowcore, exit_timer)); - DEFINE(__LC_USER_TIMER, offsetof(struct _lowcore, user_timer)); - DEFINE(__LC_SYSTEM_TIMER, offsetof(struct _lowcore, system_timer)); - DEFINE(__LC_STEAL_TIMER, offsetof(struct _lowcore, steal_timer)); - DEFINE(__LC_LAST_UPDATE_TIMER, offsetof(struct _lowcore, last_update_timer)); - DEFINE(__LC_LAST_UPDATE_CLOCK, offsetof(struct _lowcore, last_update_clock)); - DEFINE(__LC_CURRENT, offsetof(struct _lowcore, current_task)); - DEFINE(__LC_CURRENT_PID, offsetof(struct _lowcore, current_pid)); - DEFINE(__LC_THREAD_INFO, offsetof(struct _lowcore, thread_info)); - DEFINE(__LC_KERNEL_STACK, offsetof(struct _lowcore, kernel_stack)); - DEFINE(__LC_ASYNC_STACK, offsetof(struct _lowcore, async_stack)); - DEFINE(__LC_PANIC_STACK, offsetof(struct _lowcore, panic_stack)); - DEFINE(__LC_RESTART_STACK, offsetof(struct _lowcore, restart_stack)); - DEFINE(__LC_RESTART_FN, offsetof(struct _lowcore, restart_fn)); - DEFINE(__LC_RESTART_DATA, offsetof(struct _lowcore, restart_data)); - DEFINE(__LC_RESTART_SOURCE, offsetof(struct _lowcore, restart_source)); - DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce)); - DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce)); - DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock)); - DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock)); - DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags)); - DEFINE(__LC_DUMP_REIPL, offsetof(struct _lowcore, ipib)); + /* hardware defined lowcore locations 0x000 - 0x1ff */ + OFFSET(__LC_EXT_PARAMS, _lowcore, ext_params); + OFFSET(__LC_EXT_CPU_ADDR, _lowcore, ext_cpu_addr); + OFFSET(__LC_EXT_INT_CODE, _lowcore, ext_int_code); + OFFSET(__LC_SVC_ILC, _lowcore, svc_ilc); + OFFSET(__LC_SVC_INT_CODE, _lowcore, svc_code); + OFFSET(__LC_PGM_ILC, _lowcore, pgm_ilc); + OFFSET(__LC_PGM_INT_CODE, _lowcore, pgm_code); + OFFSET(__LC_DATA_EXC_CODE, _lowcore, data_exc_code); + OFFSET(__LC_MON_CLASS_NR, _lowcore, mon_class_num); + OFFSET(__LC_PER_CODE, _lowcore, per_code); + OFFSET(__LC_PER_ATMID, _lowcore, per_atmid); + OFFSET(__LC_PER_ADDRESS, _lowcore, per_address); + OFFSET(__LC_EXC_ACCESS_ID, _lowcore, exc_access_id); + OFFSET(__LC_PER_ACCESS_ID, _lowcore, per_access_id); + OFFSET(__LC_OP_ACCESS_ID, _lowcore, op_access_id); + OFFSET(__LC_AR_MODE_ID, _lowcore, ar_mode_id); + OFFSET(__LC_TRANS_EXC_CODE, _lowcore, trans_exc_code); + OFFSET(__LC_MON_CODE, _lowcore, monitor_code); + OFFSET(__LC_SUBCHANNEL_ID, _lowcore, subchannel_id); + OFFSET(__LC_SUBCHANNEL_NR, _lowcore, subchannel_nr); + OFFSET(__LC_IO_INT_PARM, _lowcore, io_int_parm); + OFFSET(__LC_IO_INT_WORD, _lowcore, io_int_word); + OFFSET(__LC_STFL_FAC_LIST, _lowcore, stfl_fac_list); + OFFSET(__LC_MCCK_CODE, _lowcore, mcck_interruption_code); + OFFSET(__LC_MCCK_FAIL_STOR_ADDR, _lowcore, failing_storage_address); + OFFSET(__LC_LAST_BREAK, _lowcore, breaking_event_addr); + OFFSET(__LC_RST_OLD_PSW, _lowcore, restart_old_psw); + OFFSET(__LC_EXT_OLD_PSW, _lowcore, external_old_psw); + OFFSET(__LC_SVC_OLD_PSW, _lowcore, svc_old_psw); + OFFSET(__LC_PGM_OLD_PSW, _lowcore, program_old_psw); + OFFSET(__LC_MCK_OLD_PSW, _lowcore, mcck_old_psw); + OFFSET(__LC_IO_OLD_PSW, _lowcore, io_old_psw); + OFFSET(__LC_RST_NEW_PSW, _lowcore, restart_psw); + OFFSET(__LC_EXT_NEW_PSW, _lowcore, external_new_psw); + OFFSET(__LC_SVC_NEW_PSW, _lowcore, svc_new_psw); + OFFSET(__LC_PGM_NEW_PSW, _lowcore, program_new_psw); + OFFSET(__LC_MCK_NEW_PSW, _lowcore, mcck_new_psw); + OFFSET(__LC_IO_NEW_PSW, _lowcore, io_new_psw); + /* software defined lowcore locations 0x200 - 0xdff*/ + OFFSET(__LC_SAVE_AREA_SYNC, _lowcore, save_area_sync); + OFFSET(__LC_SAVE_AREA_ASYNC, _lowcore, save_area_async); + OFFSET(__LC_SAVE_AREA_RESTART, _lowcore, save_area_restart); + OFFSET(__LC_CPU_FLAGS, _lowcore, cpu_flags); + OFFSET(__LC_RETURN_PSW, _lowcore, return_psw); + OFFSET(__LC_RETURN_MCCK_PSW, _lowcore, return_mcck_psw); + OFFSET(__LC_SYNC_ENTER_TIMER, _lowcore, sync_enter_timer); + OFFSET(__LC_ASYNC_ENTER_TIMER, _lowcore, async_enter_timer); + OFFSET(__LC_MCCK_ENTER_TIMER, _lowcore, mcck_enter_timer); + OFFSET(__LC_EXIT_TIMER, _lowcore, exit_timer); + OFFSET(__LC_USER_TIMER, _lowcore, user_timer); + OFFSET(__LC_SYSTEM_TIMER, _lowcore, system_timer); + OFFSET(__LC_STEAL_TIMER, _lowcore, steal_timer); + OFFSET(__LC_LAST_UPDATE_TIMER, _lowcore, last_update_timer); + OFFSET(__LC_LAST_UPDATE_CLOCK, _lowcore, last_update_clock); + OFFSET(__LC_INT_CLOCK, _lowcore, int_clock); + OFFSET(__LC_MCCK_CLOCK, _lowcore, mcck_clock); + OFFSET(__LC_CURRENT, _lowcore, current_task); + OFFSET(__LC_THREAD_INFO, _lowcore, thread_info); + OFFSET(__LC_KERNEL_STACK, _lowcore, kernel_stack); + OFFSET(__LC_ASYNC_STACK, _lowcore, async_stack); + OFFSET(__LC_PANIC_STACK, _lowcore, panic_stack); + OFFSET(__LC_RESTART_STACK, _lowcore, restart_stack); + OFFSET(__LC_RESTART_FN, _lowcore, restart_fn); + OFFSET(__LC_RESTART_DATA, _lowcore, restart_data); + OFFSET(__LC_RESTART_SOURCE, _lowcore, restart_source); + OFFSET(__LC_USER_ASCE, _lowcore, user_asce); + OFFSET(__LC_LPP, _lowcore, lpp); + OFFSET(__LC_CURRENT_PID, _lowcore, current_pid); + OFFSET(__LC_PERCPU_OFFSET, _lowcore, percpu_offset); + OFFSET(__LC_VDSO_PER_CPU, _lowcore, vdso_per_cpu_data); + OFFSET(__LC_MACHINE_FLAGS, _lowcore, machine_flags); + OFFSET(__LC_GMAP, _lowcore, gmap); + OFFSET(__LC_PASTE, _lowcore, paste); + /* software defined ABI-relevant lowcore locations 0xe00 - 0xe20 */ + OFFSET(__LC_DUMP_REIPL, _lowcore, ipib); + /* hardware defined lowcore locations 0x1000 - 0x18ff */ + OFFSET(__LC_VX_SAVE_AREA_ADDR, _lowcore, vector_save_area_addr); + OFFSET(__LC_EXT_PARAMS2, _lowcore, ext_params2); + OFFSET(SAVE_AREA_BASE, _lowcore, floating_pt_save_area); + OFFSET(__LC_FPREGS_SAVE_AREA, _lowcore, floating_pt_save_area); + OFFSET(__LC_GPREGS_SAVE_AREA, _lowcore, gpregs_save_area); + OFFSET(__LC_PSW_SAVE_AREA, _lowcore, psw_save_area); + OFFSET(__LC_PREFIX_SAVE_AREA, _lowcore, prefixreg_save_area); + OFFSET(__LC_FP_CREG_SAVE_AREA, _lowcore, fpt_creg_save_area); + OFFSET(__LC_CPU_TIMER_SAVE_AREA, _lowcore, cpu_timer_save_area); + OFFSET(__LC_CLOCK_COMP_SAVE_AREA, _lowcore, clock_comp_save_area); + OFFSET(__LC_AREGS_SAVE_AREA, _lowcore, access_regs_save_area); + OFFSET(__LC_CREGS_SAVE_AREA, _lowcore, cregs_save_area); + OFFSET(__LC_PGM_TDB, _lowcore, pgm_tdb); BLANK(); - DEFINE(__LC_CPU_TIMER_SAVE_AREA, offsetof(struct _lowcore, cpu_timer_save_area)); - DEFINE(__LC_CLOCK_COMP_SAVE_AREA, offsetof(struct _lowcore, clock_comp_save_area)); - DEFINE(__LC_PSW_SAVE_AREA, offsetof(struct _lowcore, psw_save_area)); - DEFINE(__LC_PREFIX_SAVE_AREA, offsetof(struct _lowcore, prefixreg_save_area)); - DEFINE(__LC_AREGS_SAVE_AREA, offsetof(struct _lowcore, access_regs_save_area)); - DEFINE(__LC_FPREGS_SAVE_AREA, offsetof(struct _lowcore, floating_pt_save_area)); - DEFINE(__LC_GPREGS_SAVE_AREA, offsetof(struct _lowcore, gpregs_save_area)); - DEFINE(__LC_CREGS_SAVE_AREA, offsetof(struct _lowcore, cregs_save_area)); - DEFINE(__LC_DATA_EXC_CODE, offsetof(struct _lowcore, data_exc_code)); - DEFINE(__LC_MCCK_FAIL_STOR_ADDR, offsetof(struct _lowcore, failing_storage_address)); - DEFINE(__LC_VX_SAVE_AREA_ADDR, offsetof(struct _lowcore, vector_save_area_addr)); - DEFINE(__LC_EXT_PARAMS2, offsetof(struct _lowcore, ext_params2)); - DEFINE(SAVE_AREA_BASE, offsetof(struct _lowcore, floating_pt_save_area)); - DEFINE(__LC_PASTE, offsetof(struct _lowcore, paste)); - DEFINE(__LC_FP_CREG_SAVE_AREA, offsetof(struct _lowcore, fpt_creg_save_area)); - DEFINE(__LC_LAST_BREAK, offsetof(struct _lowcore, breaking_event_addr)); - DEFINE(__LC_PERCPU_OFFSET, offsetof(struct _lowcore, percpu_offset)); - DEFINE(__LC_VDSO_PER_CPU, offsetof(struct _lowcore, vdso_per_cpu_data)); - DEFINE(__LC_GMAP, offsetof(struct _lowcore, gmap)); - DEFINE(__LC_PGM_TDB, offsetof(struct _lowcore, pgm_tdb)); - DEFINE(__GMAP_ASCE, offsetof(struct gmap, asce)); - DEFINE(__SIE_PROG0C, offsetof(struct kvm_s390_sie_block, prog0c)); - DEFINE(__SIE_PROG20, offsetof(struct kvm_s390_sie_block, prog20)); + /* gmap/sie offsets */ + OFFSET(__GMAP_ASCE, gmap, asce); + OFFSET(__SIE_PROG0C, kvm_s390_sie_block, prog0c); + OFFSET(__SIE_PROG20, kvm_s390_sie_block, prog20); return 0; } diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index e0f9d27..66c9441 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -249,7 +249,7 @@ static int save_sigregs_ext32(struct pt_regs *regs, return -EFAULT; /* Save vector registers to signal stack */ - if (is_vx_task(current)) { + if (MACHINE_HAS_VX) { for (i = 0; i < __NUM_VXRS_LOW; i++) vxrs[i] = *((__u64 *)(current->thread.fpu.vxrs + i) + 1); if (__copy_to_user(&sregs_ext->vxrs_low, vxrs, @@ -277,7 +277,7 @@ static int restore_sigregs_ext32(struct pt_regs *regs, *(__u32 *)®s->gprs[i] = gprs_high[i]; /* Restore vector registers from signal stack */ - if (is_vx_task(current)) { + if (MACHINE_HAS_VX) { if (__copy_from_user(vxrs, &sregs_ext->vxrs_low, sizeof(sregs_ext->vxrs_low)) || __copy_from_user(current->thread.fpu.vxrs + __NUM_VXRS_LOW, @@ -470,8 +470,7 @@ static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set, */ uc_flags = UC_GPRS_HIGH; if (MACHINE_HAS_VX) { - if (is_vx_task(current)) - uc_flags |= UC_VXRS; + uc_flags |= UC_VXRS; } else frame_size -= sizeof(frame->uc.uc_mcontext_ext.vxrs_low) + sizeof(frame->uc.uc_mcontext_ext.vxrs_high); diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c index 199ec92..7f76891 100644 --- a/arch/s390/kernel/cpcmd.c +++ b/arch/s390/kernel/cpcmd.c @@ -14,6 +14,7 @@ #include <linux/spinlock.h> #include <linux/stddef.h> #include <linux/string.h> +#include <asm/diag.h> #include <asm/ebcdic.h> #include <asm/cpcmd.h> #include <asm/io.h> @@ -70,6 +71,7 @@ int __cpcmd(const char *cmd, char *response, int rlen, int *response_code) memcpy(cpcmd_buf, cmd, cmdlen); ASCEBC(cpcmd_buf, cmdlen); + diag_stat_inc(DIAG_STAT_X008); if (response) { memset(response, 0, rlen); response_len = rlen; diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index 0c6c01e..171e09b 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -32,16 +32,6 @@ static struct memblock_type oldmem_type = { .regions = &oldmem_region, }; -#define for_each_dump_mem_range(i, nid, p_start, p_end, p_nid) \ - for (i = 0, __next_mem_range(&i, nid, MEMBLOCK_NONE, \ - &memblock.physmem, \ - &oldmem_type, p_start, \ - p_end, p_nid); \ - i != (u64)ULLONG_MAX; \ - __next_mem_range(&i, nid, MEMBLOCK_NONE, &memblock.physmem,\ - &oldmem_type, \ - p_start, p_end, p_nid)) - struct dump_save_areas dump_save_areas; /* @@ -515,7 +505,8 @@ static int get_mem_chunk_cnt(void) int cnt = 0; u64 idx; - for_each_dump_mem_range(idx, NUMA_NO_NODE, NULL, NULL, NULL) + for_each_mem_range(idx, &memblock.physmem, &oldmem_type, NUMA_NO_NODE, + MEMBLOCK_NONE, NULL, NULL, NULL) cnt++; return cnt; } @@ -528,7 +519,8 @@ static void loads_init(Elf64_Phdr *phdr, u64 loads_offset) phys_addr_t start, end; u64 idx; - for_each_dump_mem_range(idx, NUMA_NO_NODE, &start, &end, NULL) { + for_each_mem_range(idx, &memblock.physmem, &oldmem_type, NUMA_NO_NODE, + MEMBLOCK_NONE, &start, &end, NULL) { phdr->p_filesz = end - start; phdr->p_type = PT_LOAD; phdr->p_offset = start; diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c index 2f69243..f98766e 100644 --- a/arch/s390/kernel/diag.c +++ b/arch/s390/kernel/diag.c @@ -6,12 +6,137 @@ */ #include <linux/module.h> +#include <linux/cpu.h> +#include <linux/seq_file.h> +#include <linux/debugfs.h> #include <asm/diag.h> +#include <asm/trace/diag.h> + +struct diag_stat { + unsigned int counter[NR_DIAG_STAT]; +}; + +static DEFINE_PER_CPU(struct diag_stat, diag_stat); + +struct diag_desc { + int code; + char *name; +}; + +static const struct diag_desc diag_map[NR_DIAG_STAT] = { + [DIAG_STAT_X008] = { .code = 0x008, .name = "Console Function" }, + [DIAG_STAT_X00C] = { .code = 0x00c, .name = "Pseudo Timer" }, + [DIAG_STAT_X010] = { .code = 0x010, .name = "Release Pages" }, + [DIAG_STAT_X014] = { .code = 0x014, .name = "Spool File Services" }, + [DIAG_STAT_X044] = { .code = 0x044, .name = "Voluntary Timeslice End" }, + [DIAG_STAT_X064] = { .code = 0x064, .name = "NSS Manipulation" }, + [DIAG_STAT_X09C] = { .code = 0x09c, .name = "Relinquish Timeslice" }, + [DIAG_STAT_X0DC] = { .code = 0x0dc, .name = "Appldata Control" }, + [DIAG_STAT_X204] = { .code = 0x204, .name = "Logical-CPU Utilization" }, + [DIAG_STAT_X210] = { .code = 0x210, .name = "Device Information" }, + [DIAG_STAT_X224] = { .code = 0x224, .name = "EBCDIC-Name Table" }, + [DIAG_STAT_X250] = { .code = 0x250, .name = "Block I/O" }, + [DIAG_STAT_X258] = { .code = 0x258, .name = "Page-Reference Services" }, + [DIAG_STAT_X288] = { .code = 0x288, .name = "Time Bomb" }, + [DIAG_STAT_X2C4] = { .code = 0x2c4, .name = "FTP Services" }, + [DIAG_STAT_X2FC] = { .code = 0x2fc, .name = "Guest Performance Data" }, + [DIAG_STAT_X304] = { .code = 0x304, .name = "Partition-Resource Service" }, + [DIAG_STAT_X308] = { .code = 0x308, .name = "List-Directed IPL" }, + [DIAG_STAT_X500] = { .code = 0x500, .name = "Virtio Service" }, +}; + +static int show_diag_stat(struct seq_file *m, void *v) +{ + struct diag_stat *stat; + unsigned long n = (unsigned long) v - 1; + int cpu, prec, tmp; + + get_online_cpus(); + if (n == 0) { + seq_puts(m, " "); + + for_each_online_cpu(cpu) { + prec = 10; + for (tmp = 10; cpu >= tmp; tmp *= 10) + prec--; + seq_printf(m, "%*s%d", prec, "CPU", cpu); + } + seq_putc(m, '\n'); + } else if (n <= NR_DIAG_STAT) { + seq_printf(m, "diag %03x:", diag_map[n-1].code); + for_each_online_cpu(cpu) { + stat = &per_cpu(diag_stat, cpu); + seq_printf(m, " %10u", stat->counter[n-1]); + } + seq_printf(m, " %s\n", diag_map[n-1].name); + } + put_online_cpus(); + return 0; +} + +static void *show_diag_stat_start(struct seq_file *m, loff_t *pos) +{ + return *pos <= nr_cpu_ids ? (void *)((unsigned long) *pos + 1) : NULL; +} + +static void *show_diag_stat_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return show_diag_stat_start(m, pos); +} + +static void show_diag_stat_stop(struct seq_file *m, void *v) +{ +} + +static const struct seq_operations show_diag_stat_sops = { + .start = show_diag_stat_start, + .next = show_diag_stat_next, + .stop = show_diag_stat_stop, + .show = show_diag_stat, +}; + +static int show_diag_stat_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &show_diag_stat_sops); +} + +static const struct file_operations show_diag_stat_fops = { + .open = show_diag_stat_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + + +static int __init show_diag_stat_init(void) +{ + debugfs_create_file("diag_stat", 0400, NULL, NULL, + &show_diag_stat_fops); + return 0; +} + +device_initcall(show_diag_stat_init); + +void diag_stat_inc(enum diag_stat_enum nr) +{ + this_cpu_inc(diag_stat.counter[nr]); + trace_diagnose(diag_map[nr].code); +} +EXPORT_SYMBOL(diag_stat_inc); + +void diag_stat_inc_norecursion(enum diag_stat_enum nr) +{ + this_cpu_inc(diag_stat.counter[nr]); + trace_diagnose_norecursion(diag_map[nr].code); +} +EXPORT_SYMBOL(diag_stat_inc_norecursion); /* * Diagnose 14: Input spool file manipulation */ -int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) +static inline int __diag14(unsigned long rx, unsigned long ry1, + unsigned long subcode) { register unsigned long _ry1 asm("2") = ry1; register unsigned long _ry2 asm("3") = subcode; @@ -29,6 +154,12 @@ int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) return rc; } + +int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) +{ + diag_stat_inc(DIAG_STAT_X014); + return __diag14(rx, ry1, subcode); +} EXPORT_SYMBOL(diag14); /* @@ -48,6 +179,7 @@ int diag210(struct diag210 *addr) spin_lock_irqsave(&diag210_lock, flags); diag210_tmp = *addr; + diag_stat_inc(DIAG_STAT_X210); asm volatile( " lhi %0,-1\n" " sam31\n" diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 549a73a..3c31609 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -17,6 +17,7 @@ #include <linux/pfn.h> #include <linux/uaccess.h> #include <linux/kernel.h> +#include <asm/diag.h> #include <asm/ebcdic.h> #include <asm/ipl.h> #include <asm/lowcore.h> @@ -286,6 +287,7 @@ static __init void detect_diag9c(void) int rc; cpu_address = stap(); + diag_stat_inc(DIAG_STAT_X09C); asm volatile( " diag %2,0,0x9c\n" "0: la %0,0\n" @@ -300,6 +302,7 @@ static __init void detect_diag44(void) { int rc; + diag_stat_inc(DIAG_STAT_X044); asm volatile( " diag 0,0,0x44\n" "0: la %0,0\n" @@ -326,9 +329,19 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_TE; if (test_facility(51)) S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC; - if (test_facility(129)) + if (test_facility(129)) { S390_lowcore.machine_flags |= MACHINE_FLAG_VX; + __ctl_set_bit(0, 17); + } +} + +static int __init disable_vector_extension(char *str) +{ + S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX; + __ctl_clear_bit(0, 17); + return 1; } +early_param("novx", disable_vector_extension); static int __init cad_setup(char *str) { diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 582fe44..857b652 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -20,8 +20,9 @@ #include <asm/page.h> #include <asm/sigp.h> #include <asm/irq.h> -#include <asm/fpu-internal.h> #include <asm/vx-insn.h> +#include <asm/setup.h> +#include <asm/nmi.h> __PT_R0 = __PT_GPRS __PT_R1 = __PT_GPRS + 8 @@ -139,6 +140,28 @@ _PIF_WORK = (_PIF_PER_TRAP) #endif .endm + /* + * The TSTMSK macro generates a test-under-mask instruction by + * calculating the memory offset for the specified mask value. + * Mask value can be any constant. The macro shifts the mask + * value to calculate the memory offset for the test-under-mask + * instruction. + */ + .macro TSTMSK addr, mask, size=8, bytepos=0 + .if (\bytepos < \size) && (\mask >> 8) + .if (\mask & 0xff) + .error "Mask exceeds byte boundary" + .endif + TSTMSK \addr, "(\mask >> 8)", \size, "(\bytepos + 1)" + .exitm + .endif + .ifeq \mask + .error "Mask must not be zero" + .endif + off = \size - \bytepos - 1 + tm off+\addr, \mask + .endm + .section .kprobes.text, "ax" /* @@ -164,8 +187,11 @@ ENTRY(__switch_to) stg %r15,__LC_KERNEL_STACK # store end of kernel stack lg %r15,__THREAD_ksp(%r1) # load kernel stack of next lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4 - mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next + mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task + TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_LPP + bzr %r14 + .insn s,0xb2800000,__LC_LPP # set program parameter br %r14 .L__critical_start: @@ -180,8 +206,8 @@ ENTRY(sie64a) stmg %r6,%r14,__SF_GPRS(%r15) # save kernel registers stg %r2,__SF_EMPTY(%r15) # save control block pointer stg %r3,__SF_EMPTY+8(%r15) # save guest register save area - xc __SF_EMPTY+16(16,%r15),__SF_EMPTY+16(%r15) # host id & reason - tm __LC_CPU_FLAGS+7,_CIF_FPU # load guest fp/vx registers ? + xc __SF_EMPTY+16(8,%r15),__SF_EMPTY+16(%r15) # reason code = 0 + TSTMSK __LC_CPU_FLAGS,_CIF_FPU # load guest fp/vx registers ? jno .Lsie_load_guest_gprs brasl %r14,load_fpu_regs # load guest fp/vx regs .Lsie_load_guest_gprs: @@ -195,16 +221,9 @@ ENTRY(sie64a) oi __SIE_PROG0C+3(%r14),1 # we are going into SIE now tm __SIE_PROG20+3(%r14),3 # last exit... jnz .Lsie_skip - tm __LC_CPU_FLAGS+7,_CIF_FPU + TSTMSK __LC_CPU_FLAGS,_CIF_FPU jo .Lsie_skip # exit if fp/vx regs changed - tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_LPP - jz .Lsie_enter - .insn s,0xb2800000,__LC_CURRENT_PID # set guest id to pid -.Lsie_enter: sie 0(%r14) - tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_LPP - jz .Lsie_skip - .insn s,0xb2800000,__SF_EMPTY+16(%r15)# set host id .Lsie_skip: ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE lctlg %c1,%c1,__LC_USER_ASCE # load primary asce @@ -221,11 +240,11 @@ sie_exit: lg %r14,__SF_EMPTY+8(%r15) # load guest register save area stmg %r0,%r13,0(%r14) # save guest gprs 0-13 lmg %r6,%r14,__SF_GPRS(%r15) # restore kernel registers - lg %r2,__SF_EMPTY+24(%r15) # return exit reason code + lg %r2,__SF_EMPTY+16(%r15) # return exit reason code br %r14 .Lsie_fault: lghi %r14,-EFAULT - stg %r14,__SF_EMPTY+24(%r15) # set exit reason code + stg %r14,__SF_EMPTY+16(%r15) # set exit reason code j sie_exit EX_TABLE(.Lrewind_pad,.Lsie_fault) @@ -271,7 +290,7 @@ ENTRY(system_call) stg %r2,__PT_ORIG_GPR2(%r11) stg %r7,STACK_FRAME_OVERHEAD(%r15) lgf %r9,0(%r8,%r10) # get system call add. - tm __TI_flags+7(%r12),_TIF_TRACE + TSTMSK __TI_flags(%r12),_TIF_TRACE jnz .Lsysc_tracesys basr %r14,%r9 # call sys_xxxx stg %r2,__PT_R2(%r11) # store return value @@ -279,11 +298,11 @@ ENTRY(system_call) .Lsysc_return: LOCKDEP_SYS_EXIT .Lsysc_tif: - tm __PT_FLAGS+7(%r11),_PIF_WORK + TSTMSK __PT_FLAGS(%r11),_PIF_WORK jnz .Lsysc_work - tm __TI_flags+7(%r12),_TIF_WORK + TSTMSK __TI_flags(%r12),_TIF_WORK jnz .Lsysc_work # check for work - tm __LC_CPU_FLAGS+7,_CIF_WORK + TSTMSK __LC_CPU_FLAGS,_CIF_WORK jnz .Lsysc_work .Lsysc_restore: lg %r14,__LC_VDSO_PER_CPU @@ -299,23 +318,23 @@ ENTRY(system_call) # One of the work bits is on. Find out which one. # .Lsysc_work: - tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING + TSTMSK __LC_CPU_FLAGS,_CIF_MCCK_PENDING jo .Lsysc_mcck_pending - tm __TI_flags+7(%r12),_TIF_NEED_RESCHED + TSTMSK __TI_flags(%r12),_TIF_NEED_RESCHED jo .Lsysc_reschedule #ifdef CONFIG_UPROBES - tm __TI_flags+7(%r12),_TIF_UPROBE + TSTMSK __TI_flags(%r12),_TIF_UPROBE jo .Lsysc_uprobe_notify #endif - tm __PT_FLAGS+7(%r11),_PIF_PER_TRAP + TSTMSK __PT_FLAGS(%r11),_PIF_PER_TRAP jo .Lsysc_singlestep - tm __TI_flags+7(%r12),_TIF_SIGPENDING + TSTMSK __TI_flags(%r12),_TIF_SIGPENDING jo .Lsysc_sigpending - tm __TI_flags+7(%r12),_TIF_NOTIFY_RESUME + TSTMSK __TI_flags(%r12),_TIF_NOTIFY_RESUME jo .Lsysc_notify_resume - tm __LC_CPU_FLAGS+7,_CIF_FPU + TSTMSK __LC_CPU_FLAGS,_CIF_FPU jo .Lsysc_vxrs - tm __LC_CPU_FLAGS+7,_CIF_ASCE + TSTMSK __LC_CPU_FLAGS,_CIF_ASCE jo .Lsysc_uaccess j .Lsysc_return # beware of critical section cleanup @@ -354,7 +373,7 @@ ENTRY(system_call) .Lsysc_sigpending: lgr %r2,%r11 # pass pointer to pt_regs brasl %r14,do_signal - tm __PT_FLAGS+7(%r11),_PIF_SYSCALL + TSTMSK __PT_FLAGS(%r11),_PIF_SYSCALL jno .Lsysc_return lmg %r2,%r7,__PT_R2(%r11) # load svc arguments lg %r10,__TI_sysc_table(%r12) # address of system call table @@ -414,7 +433,7 @@ ENTRY(system_call) basr %r14,%r9 # call sys_xxx stg %r2,__PT_R2(%r11) # store return value .Lsysc_tracenogo: - tm __TI_flags+7(%r12),_TIF_TRACE + TSTMSK __TI_flags(%r12),_TIF_TRACE jz .Lsysc_return lgr %r2,%r11 # pass pointer to pt_regs larl %r14,.Lsysc_return @@ -544,6 +563,8 @@ ENTRY(io_int_handler) stmg %r8,%r9,__PT_PSW(%r11) mvc __PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID xc __PT_FLAGS(8,%r11),__PT_FLAGS(%r11) + TSTMSK __LC_CPU_FLAGS,_CIF_IGNORE_IRQ + jo .Lio_restore TRACE_IRQS_OFF xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) .Lio_loop: @@ -554,7 +575,7 @@ ENTRY(io_int_handler) lghi %r3,THIN_INTERRUPT .Lio_call: brasl %r14,do_IRQ - tm __LC_MACHINE_FLAGS+6,0x10 # MACHINE_FLAG_LPAR + TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_LPAR jz .Lio_return tpi 0 jz .Lio_return @@ -564,9 +585,9 @@ ENTRY(io_int_handler) LOCKDEP_SYS_EXIT TRACE_IRQS_ON .Lio_tif: - tm __TI_flags+7(%r12),_TIF_WORK + TSTMSK __TI_flags(%r12),_TIF_WORK jnz .Lio_work # there is work to do (signals etc.) - tm __LC_CPU_FLAGS+7,_CIF_WORK + TSTMSK __LC_CPU_FLAGS,_CIF_WORK jnz .Lio_work .Lio_restore: lg %r14,__LC_VDSO_PER_CPU @@ -594,7 +615,7 @@ ENTRY(io_int_handler) # check for preemptive scheduling icm %r0,15,__TI_precount(%r12) jnz .Lio_restore # preemption is disabled - tm __TI_flags+7(%r12),_TIF_NEED_RESCHED + TSTMSK __TI_flags(%r12),_TIF_NEED_RESCHED jno .Lio_restore # switch to kernel stack lg %r1,__PT_R15(%r11) @@ -626,17 +647,17 @@ ENTRY(io_int_handler) # One of the work bits is on. Find out which one. # .Lio_work_tif: - tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING + TSTMSK __LC_CPU_FLAGS,_CIF_MCCK_PENDING jo .Lio_mcck_pending - tm __TI_flags+7(%r12),_TIF_NEED_RESCHED + TSTMSK __TI_flags(%r12),_TIF_NEED_RESCHED jo .Lio_reschedule - tm __TI_flags+7(%r12),_TIF_SIGPENDING + TSTMSK __TI_flags(%r12),_TIF_SIGPENDING jo .Lio_sigpending - tm __TI_flags+7(%r12),_TIF_NOTIFY_RESUME + TSTMSK __TI_flags(%r12),_TIF_NOTIFY_RESUME jo .Lio_notify_resume - tm __LC_CPU_FLAGS+7,_CIF_FPU + TSTMSK __LC_CPU_FLAGS,_CIF_FPU jo .Lio_vxrs - tm __LC_CPU_FLAGS+7,_CIF_ASCE + TSTMSK __LC_CPU_FLAGS,_CIF_ASCE jo .Lio_uaccess j .Lio_return # beware of critical section cleanup @@ -719,6 +740,8 @@ ENTRY(ext_int_handler) mvc __PT_INT_PARM(4,%r11),__LC_EXT_PARAMS mvc __PT_INT_PARM_LONG(8,%r11),0(%r1) xc __PT_FLAGS(8,%r11),__PT_FLAGS(%r11) + TSTMSK __LC_CPU_FLAGS,_CIF_IGNORE_IRQ + jo .Lio_restore TRACE_IRQS_OFF xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) lgr %r2,%r11 # pass pointer to pt_regs @@ -748,27 +771,22 @@ ENTRY(psw_idle) br %r14 .Lpsw_idle_end: -/* Store floating-point controls and floating-point or vector extension - * registers instead. A critical section cleanup assures that the registers - * are stored even if interrupted for some other work. The register %r2 - * designates a struct fpu to store register contents. If the specified - * structure does not contain a register save area, the register store is - * omitted (see also comments in arch_dup_task_struct()). - * - * The CIF_FPU flag is set in any case. The CIF_FPU triggers a lazy restore - * of the register contents at system call or io return. +/* + * Store floating-point controls and floating-point or vector register + * depending whether the vector facility is available. A critical section + * cleanup assures that the registers are stored even if interrupted for + * some other work. The CIF_FPU flag is set to trigger a lazy restore + * of the register contents at return from io or a system call. */ ENTRY(save_fpu_regs) lg %r2,__LC_CURRENT aghi %r2,__TASK_thread - tm __LC_CPU_FLAGS+7,_CIF_FPU + TSTMSK __LC_CPU_FLAGS,_CIF_FPU bor %r14 stfpc __THREAD_FPU_fpc(%r2) .Lsave_fpu_regs_fpc_end: lg %r3,__THREAD_FPU_regs(%r2) - ltgr %r3,%r3 - jz .Lsave_fpu_regs_done # no save area -> set CIF_FPU - tm __THREAD_FPU_flags+3(%r2),FPU_USE_VX + TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_VX jz .Lsave_fpu_regs_fp # no -> store FP regs .Lsave_fpu_regs_vx_low: VSTM %v0,%v15,0,%r3 # vstm 0,15,0(3) @@ -797,41 +815,30 @@ ENTRY(save_fpu_regs) br %r14 .Lsave_fpu_regs_end: -/* Load floating-point controls and floating-point or vector extension - * registers. A critical section cleanup assures that the register contents - * are loaded even if interrupted for some other work. Depending on the saved - * FP/VX state, the vector-enablement control, CR0.46, is either set or cleared. +/* + * Load floating-point controls and floating-point or vector registers. + * A critical section cleanup assures that the register contents are + * loaded even if interrupted for some other work. * * There are special calling conventions to fit into sysc and io return work: * %r15: <kernel stack> * The function requires: - * %r4 and __SF_EMPTY+32(%r15) + * %r4 */ load_fpu_regs: lg %r4,__LC_CURRENT aghi %r4,__TASK_thread - tm __LC_CPU_FLAGS+7,_CIF_FPU + TSTMSK __LC_CPU_FLAGS,_CIF_FPU bnor %r14 lfpc __THREAD_FPU_fpc(%r4) - stctg %c0,%c0,__SF_EMPTY+32(%r15) # store CR0 - tm __THREAD_FPU_flags+3(%r4),FPU_USE_VX # VX-enabled task ? + TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_VX lg %r4,__THREAD_FPU_regs(%r4) # %r4 <- reg save area - jz .Lload_fpu_regs_fp_ctl # -> no VX, load FP regs -.Lload_fpu_regs_vx_ctl: - tm __SF_EMPTY+32+5(%r15),2 # test VX control - jo .Lload_fpu_regs_vx - oi __SF_EMPTY+32+5(%r15),2 # set VX control - lctlg %c0,%c0,__SF_EMPTY+32(%r15) + jz .Lload_fpu_regs_fp # -> no VX, load FP regs .Lload_fpu_regs_vx: VLM %v0,%v15,0,%r4 .Lload_fpu_regs_vx_high: VLM %v16,%v31,256,%r4 j .Lload_fpu_regs_done -.Lload_fpu_regs_fp_ctl: - tm __SF_EMPTY+32+5(%r15),2 # test VX control - jz .Lload_fpu_regs_fp - ni __SF_EMPTY+32+5(%r15),253 # clear VX control - lctlg %c0,%c0,__SF_EMPTY+32(%r15) .Lload_fpu_regs_fp: ld 0,0(%r4) ld 1,8(%r4) @@ -854,16 +861,6 @@ load_fpu_regs: br %r14 .Lload_fpu_regs_end: -/* Test and set the vector enablement control in CR0.46 */ -ENTRY(__ctl_set_vx) - stctg %c0,%c0,__SF_EMPTY(%r15) - tm __SF_EMPTY+5(%r15),2 - bor %r14 - oi __SF_EMPTY+5(%r15),2 - lctlg %c0,%c0,__SF_EMPTY(%r15) - br %r14 -.L__ctl_set_vx_end: - .L__critical_end: /* @@ -878,11 +875,11 @@ ENTRY(mcck_int_handler) lg %r12,__LC_THREAD_INFO larl %r13,cleanup_critical lmg %r8,%r9,__LC_MCK_OLD_PSW - tm __LC_MCCK_CODE,0x80 # system damage? + TSTMSK __LC_MCCK_CODE,MCCK_CODE_SYSTEM_DAMAGE jo .Lmcck_panic # yes -> rest of mcck code invalid lghi %r14,__LC_CPU_TIMER_SAVE_AREA mvc __LC_MCCK_ENTER_TIMER(8),0(%r14) - tm __LC_MCCK_CODE+5,0x02 # stored cpu timer value valid? + TSTMSK __LC_MCCK_CODE,MCCK_CODE_CPU_TIMER_VALID jo 3f la %r14,__LC_SYNC_ENTER_TIMER clc 0(8,%r14),__LC_ASYNC_ENTER_TIMER @@ -896,7 +893,7 @@ ENTRY(mcck_int_handler) la %r14,__LC_LAST_UPDATE_TIMER 2: spt 0(%r14) mvc __LC_MCCK_ENTER_TIMER(8),0(%r14) -3: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid? +3: TSTMSK __LC_MCCK_CODE,(MCCK_CODE_PSW_MWP_VALID|MCCK_CODE_PSW_IA_VALID) jno .Lmcck_panic # no -> skip cleanup critical SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+64,__LC_MCCK_ENTER_TIMER .Lmcck_skip: @@ -916,7 +913,7 @@ ENTRY(mcck_int_handler) la %r11,STACK_FRAME_OVERHEAD(%r1) lgr %r15,%r1 ssm __LC_PGM_NEW_PSW # turn dat on, keep irqs off - tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING + TSTMSK __LC_CPU_FLAGS,_CIF_MCCK_PENDING jno .Lmcck_return TRACE_IRQS_OFF brasl %r14,s390_handle_mcck @@ -941,7 +938,10 @@ ENTRY(mcck_int_handler) # PSW restart interrupt handler # ENTRY(restart_int_handler) - stg %r15,__LC_SAVE_AREA_RESTART + TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_LPP + jz 0f + .insn s,0xb2800000,__LC_LPP +0: stg %r15,__LC_SAVE_AREA_RESTART lg %r15,__LC_RESTART_STACK aghi %r15,-__PT_SIZE # create pt_regs on stack xc 0(__PT_SIZE,%r15),0(%r15) @@ -1019,10 +1019,6 @@ cleanup_critical: jl 0f clg %r9,BASED(.Lcleanup_table+104) # .Lload_fpu_regs_end jl .Lcleanup_load_fpu_regs - clg %r9,BASED(.Lcleanup_table+112) # __ctl_set_vx - jl 0f - clg %r9,BASED(.Lcleanup_table+120) # .L__ctl_set_vx_end - jl .Lcleanup___ctl_set_vx 0: br %r14 .align 8 @@ -1041,8 +1037,6 @@ cleanup_critical: .quad .Lsave_fpu_regs_end .quad load_fpu_regs .quad .Lload_fpu_regs_end - .quad __ctl_set_vx - .quad .L__ctl_set_vx_end #if IS_ENABLED(CONFIG_KVM) .Lcleanup_table_sie: @@ -1051,10 +1045,7 @@ cleanup_critical: .Lcleanup_sie: lg %r9,__SF_EMPTY(%r15) # get control block pointer - tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_LPP - jz 0f - .insn s,0xb2800000,__SF_EMPTY+16(%r15)# set host id -0: ni __SIE_PROG0C+3(%r9),0xfe # no longer in SIE + ni __SIE_PROG0C+3(%r9),0xfe # no longer in SIE lctlg %c1,%c1,__LC_USER_ASCE # load primary asce larl %r9,sie_exit # skip forward to sie_exit br %r14 @@ -1206,7 +1197,7 @@ cleanup_critical: .quad .Lpsw_idle_lpsw .Lcleanup_save_fpu_regs: - tm __LC_CPU_FLAGS+7,_CIF_FPU + TSTMSK __LC_CPU_FLAGS,_CIF_FPU bor %r14 clg %r9,BASED(.Lcleanup_save_fpu_regs_done) jhe 5f @@ -1224,9 +1215,7 @@ cleanup_critical: stfpc __THREAD_FPU_fpc(%r2) 1: # Load register save area and check if VX is active lg %r3,__THREAD_FPU_regs(%r2) - ltgr %r3,%r3 - jz 5f # no save area -> set CIF_FPU - tm __THREAD_FPU_flags+3(%r2),FPU_USE_VX + TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_VX jz 4f # no VX -> store FP regs 2: # Store vector registers (V0-V15) VSTM %v0,%v15,0,%r3 # vstm 0,15,0(3) @@ -1266,43 +1255,27 @@ cleanup_critical: .quad .Lsave_fpu_regs_done .Lcleanup_load_fpu_regs: - tm __LC_CPU_FLAGS+7,_CIF_FPU + TSTMSK __LC_CPU_FLAGS,_CIF_FPU bnor %r14 clg %r9,BASED(.Lcleanup_load_fpu_regs_done) jhe 1f clg %r9,BASED(.Lcleanup_load_fpu_regs_fp) jhe 2f - clg %r9,BASED(.Lcleanup_load_fpu_regs_fp_ctl) - jhe 3f clg %r9,BASED(.Lcleanup_load_fpu_regs_vx_high) - jhe 4f + jhe 3f clg %r9,BASED(.Lcleanup_load_fpu_regs_vx) - jhe 5f - clg %r9,BASED(.Lcleanup_load_fpu_regs_vx_ctl) - jhe 6f + jhe 4f lg %r4,__LC_CURRENT aghi %r4,__TASK_thread lfpc __THREAD_FPU_fpc(%r4) - tm __THREAD_FPU_flags+3(%r4),FPU_USE_VX # VX-enabled task ? + TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_VX lg %r4,__THREAD_FPU_regs(%r4) # %r4 <- reg save area - jz 3f # -> no VX, load FP regs -6: # Set VX-enablement control - stctg %c0,%c0,__SF_EMPTY+32(%r15) # store CR0 - tm __SF_EMPTY+32+5(%r15),2 # test VX control - jo 5f - oi __SF_EMPTY+32+5(%r15),2 # set VX control - lctlg %c0,%c0,__SF_EMPTY+32(%r15) -5: # Load V0 ..V15 registers + jz 2f # -> no VX, load FP regs +4: # Load V0 ..V15 registers VLM %v0,%v15,0,%r4 -4: # Load V16..V31 registers +3: # Load V16..V31 registers VLM %v16,%v31,256,%r4 j 1f -3: # Clear VX-enablement control for FP - stctg %c0,%c0,__SF_EMPTY+32(%r15) # store CR0 - tm __SF_EMPTY+32+5(%r15),2 # test VX control - jz 2f - ni __SF_EMPTY+32+5(%r15),253 # clear VX control - lctlg %c0,%c0,__SF_EMPTY+32(%r15) 2: # Load floating-point registers ld 0,0(%r4) ld 1,8(%r4) @@ -1324,28 +1297,15 @@ cleanup_critical: ni __LC_CPU_FLAGS+7,255-_CIF_FPU lg %r9,48(%r11) # return from load_fpu_regs br %r14 -.Lcleanup_load_fpu_regs_vx_ctl: - .quad .Lload_fpu_regs_vx_ctl .Lcleanup_load_fpu_regs_vx: .quad .Lload_fpu_regs_vx .Lcleanup_load_fpu_regs_vx_high: .quad .Lload_fpu_regs_vx_high -.Lcleanup_load_fpu_regs_fp_ctl: - .quad .Lload_fpu_regs_fp_ctl .Lcleanup_load_fpu_regs_fp: .quad .Lload_fpu_regs_fp .Lcleanup_load_fpu_regs_done: .quad .Lload_fpu_regs_done -.Lcleanup___ctl_set_vx: - stctg %c0,%c0,__SF_EMPTY(%r15) - tm __SF_EMPTY+5(%r15),2 - bor %r14 - oi __SF_EMPTY+5(%r15),2 - lctlg %c0,%c0,__SF_EMPTY(%r15) - lg %r9,48(%r11) # return from __ctl_set_vx - br %r14 - /* * Integer constants */ diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h index 834df04..b7019ab 100644 --- a/arch/s390/kernel/entry.h +++ b/arch/s390/kernel/entry.h @@ -16,13 +16,10 @@ void io_int_handler(void); void mcck_int_handler(void); void restart_int_handler(void); void restart_call_handler(void); -void psw_idle(struct s390_idle_data *, unsigned long); asmlinkage long do_syscall_trace_enter(struct pt_regs *regs); asmlinkage void do_syscall_trace_exit(struct pt_regs *regs); -int alloc_vector_registers(struct task_struct *tsk); - void do_protection_exception(struct pt_regs *regs); void do_dat_exception(struct pt_regs *regs); diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index d7c0050..58b719f 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -16,7 +16,12 @@ __HEAD ENTRY(startup_continue) - larl %r1,sched_clock_base_cc + tm __LC_STFL_FAC_LIST+6,0x80 # LPP available ? + jz 0f + xc __LC_LPP+1(7,0),__LC_LPP+1 # clear lpp and current_pid + mvi __LC_LPP,0x80 # and set LPP_MAGIC + .insn s,0xb2800000,__LC_LPP # load program parameter +0: larl %r1,sched_clock_base_cc mvc 0(8,%r1),__LC_LAST_UPDATE_CLOCK larl %r13,.LPG1 # get base lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 52fbef9..f6d8acd 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -17,6 +17,7 @@ #include <linux/gfp.h> #include <linux/crash_dump.h> #include <linux/debug_locks.h> +#include <asm/diag.h> #include <asm/ipl.h> #include <asm/smp.h> #include <asm/setup.h> @@ -165,7 +166,7 @@ static struct ipl_parameter_block *dump_block_ccw; static struct sclp_ipl_info sclp_ipl_info; -int diag308(unsigned long subcode, void *addr) +static inline int __diag308(unsigned long subcode, void *addr) { register unsigned long _addr asm("0") = (unsigned long) addr; register unsigned long _rc asm("1") = 0; @@ -178,6 +179,12 @@ int diag308(unsigned long subcode, void *addr) : "d" (subcode) : "cc", "memory"); return _rc; } + +int diag308(unsigned long subcode, void *addr) +{ + diag_stat_inc(DIAG_STAT_X308); + return __diag308(subcode, addr); +} EXPORT_SYMBOL_GPL(diag308); /* SYSFS */ diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index e9d9add..f41d520 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -69,7 +69,6 @@ static const struct irq_class irqclass_sub_desc[] = { {.irq = IRQEXT_IUC, .name = "IUC", .desc = "[EXT] IUCV"}, {.irq = IRQEXT_CMS, .name = "CMS", .desc = "[EXT] CPU-Measurement: Sampling"}, {.irq = IRQEXT_CMC, .name = "CMC", .desc = "[EXT] CPU-Measurement: Counter"}, - {.irq = IRQEXT_CMR, .name = "CMR", .desc = "[EXT] CPU-Measurement: RI"}, {.irq = IRQEXT_FTP, .name = "FTP", .desc = "[EXT] HMC FTP Service"}, {.irq = IRQIO_CIO, .name = "CIO", .desc = "[I/O] Common I/O Layer Interrupt"}, {.irq = IRQIO_QAI, .name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt"}, diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c index 0ae6f8e..07302ce 100644 --- a/arch/s390/kernel/nmi.c +++ b/arch/s390/kernel/nmi.c @@ -21,19 +21,20 @@ #include <asm/nmi.h> #include <asm/crw.h> #include <asm/switch_to.h> -#include <asm/fpu-internal.h> #include <asm/ctl_reg.h> struct mcck_struct { - int kill_task; - int channel_report; - int warning; - unsigned long long mcck_code; + unsigned int kill_task : 1; + unsigned int channel_report : 1; + unsigned int warning : 1; + unsigned int etr_queue : 1; + unsigned int stp_queue : 1; + unsigned long mcck_code; }; static DEFINE_PER_CPU(struct mcck_struct, cpu_mcck); -static void s390_handle_damage(char *msg) +static void s390_handle_damage(void) { smp_send_stop(); disabled_wait((unsigned long) __builtin_return_address(0)); @@ -81,10 +82,14 @@ void s390_handle_mcck(void) if (xchg(&mchchk_wng_posted, 1) == 0) kill_cad_pid(SIGPWR, 1); } + if (mcck.etr_queue) + etr_queue_work(); + if (mcck.stp_queue) + stp_queue_work(); if (mcck.kill_task) { local_irq_enable(); printk(KERN_EMERG "mcck: Terminating task because of machine " - "malfunction (code 0x%016llx).\n", mcck.mcck_code); + "malfunction (code 0x%016lx).\n", mcck.mcck_code); printk(KERN_EMERG "mcck: task: %s, pid: %d.\n", current->comm, current->pid); do_exit(SIGSEGV); @@ -96,7 +101,7 @@ EXPORT_SYMBOL_GPL(s390_handle_mcck); * returns 0 if all registers could be validated * returns 1 otherwise */ -static int notrace s390_revalidate_registers(struct mci *mci) +static int notrace s390_validate_registers(union mci mci) { int kill_task; u64 zero; @@ -105,14 +110,14 @@ static int notrace s390_revalidate_registers(struct mci *mci) kill_task = 0; zero = 0; - if (!mci->gr) { + if (!mci.gr) { /* * General purpose registers couldn't be restored and have * unknown contents. Process needs to be terminated. */ kill_task = 1; } - if (!mci->fp) { + if (!mci.fp) { /* * Floating point registers can't be restored and * therefore the process needs to be terminated. @@ -121,7 +126,7 @@ static int notrace s390_revalidate_registers(struct mci *mci) } fpt_save_area = &S390_lowcore.floating_pt_save_area; fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area; - if (!mci->fc) { + if (!mci.fc) { /* * Floating point control register can't be restored. * Task will be terminated. @@ -132,7 +137,7 @@ static int notrace s390_revalidate_registers(struct mci *mci) asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area)); if (!MACHINE_HAS_VX) { - /* Revalidate floating point registers */ + /* Validate floating point registers */ asm volatile( " ld 0,0(%0)\n" " ld 1,8(%0)\n" @@ -152,10 +157,10 @@ static int notrace s390_revalidate_registers(struct mci *mci) " ld 15,120(%0)\n" : : "a" (fpt_save_area)); } else { - /* Revalidate vector registers */ + /* Validate vector registers */ union ctlreg0 cr0; - if (!mci->vr) { + if (!mci.vr) { /* * Vector registers can't be restored and therefore * the process needs to be terminated. @@ -173,38 +178,38 @@ static int notrace s390_revalidate_registers(struct mci *mci) &S390_lowcore.vector_save_area) : "1"); __ctl_load(S390_lowcore.cregs_save_area[0], 0, 0); } - /* Revalidate access registers */ + /* Validate access registers */ asm volatile( " lam 0,15,0(%0)" : : "a" (&S390_lowcore.access_regs_save_area)); - if (!mci->ar) { + if (!mci.ar) { /* * Access registers have unknown contents. * Terminating task. */ kill_task = 1; } - /* Revalidate control registers */ - if (!mci->cr) { + /* Validate control registers */ + if (!mci.cr) { /* * Control registers have unknown contents. * Can't recover and therefore stopping machine. */ - s390_handle_damage("invalid control registers."); + s390_handle_damage(); } else { asm volatile( " lctlg 0,15,0(%0)" : : "a" (&S390_lowcore.cregs_save_area)); } /* - * We don't even try to revalidate the TOD register, since we simply + * We don't even try to validate the TOD register, since we simply * can't write something sensible into that register. */ /* - * See if we can revalidate the TOD programmable register with its + * See if we can validate the TOD programmable register with its * old contents (should be zero) otherwise set it to zero. */ - if (!mci->pr) + if (!mci.pr) asm volatile( " sr 0,0\n" " sckpf" @@ -215,17 +220,17 @@ static int notrace s390_revalidate_registers(struct mci *mci) " sckpf" : : "a" (&S390_lowcore.tod_progreg_save_area) : "0", "cc"); - /* Revalidate clock comparator register */ + /* Validate clock comparator register */ set_clock_comparator(S390_lowcore.clock_comparator); /* Check if old PSW is valid */ - if (!mci->wp) + if (!mci.wp) /* * Can't tell if we come from user or kernel mode * -> stopping machine. */ - s390_handle_damage("old psw invalid."); + s390_handle_damage(); - if (!mci->ms || !mci->pm || !mci->ia) + if (!mci.ms || !mci.pm || !mci.ia) kill_task = 1; return kill_task; @@ -249,21 +254,21 @@ void notrace s390_do_machine_check(struct pt_regs *regs) static unsigned long long last_ipd; struct mcck_struct *mcck; unsigned long long tmp; - struct mci *mci; + union mci mci; int umode; nmi_enter(); inc_irq_stat(NMI_NMI); - mci = (struct mci *) &S390_lowcore.mcck_interruption_code; + mci.val = S390_lowcore.mcck_interruption_code; mcck = this_cpu_ptr(&cpu_mcck); umode = user_mode(regs); - if (mci->sd) { + if (mci.sd) { /* System damage -> stopping machine */ - s390_handle_damage("received system damage machine check."); + s390_handle_damage(); } - if (mci->pd) { - if (mci->b) { + if (mci.pd) { + if (mci.b) { /* Processing backup -> verify if we can survive this */ u64 z_mcic, o_mcic, t_mcic; z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<29); @@ -271,12 +276,11 @@ void notrace s390_do_machine_check(struct pt_regs *regs) 1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 | 1ULL<<30 | 1ULL<<21 | 1ULL<<20 | 1ULL<<17 | 1ULL<<16); - t_mcic = *(u64 *)mci; + t_mcic = mci.val; if (((t_mcic & z_mcic) != 0) || ((t_mcic & o_mcic) != o_mcic)) { - s390_handle_damage("processing backup machine " - "check with damage."); + s390_handle_damage(); } /* @@ -291,64 +295,62 @@ void notrace s390_do_machine_check(struct pt_regs *regs) ipd_count = 1; last_ipd = tmp; if (ipd_count == MAX_IPD_COUNT) - s390_handle_damage("too many ipd retries."); + s390_handle_damage(); spin_unlock(&ipd_lock); } else { /* Processing damage -> stopping machine */ - s390_handle_damage("received instruction processing " - "damage machine check."); + s390_handle_damage(); } } - if (s390_revalidate_registers(mci)) { + if (s390_validate_registers(mci)) { if (umode) { /* * Couldn't restore all register contents while in * user mode -> mark task for termination. */ mcck->kill_task = 1; - mcck->mcck_code = *(unsigned long long *) mci; + mcck->mcck_code = mci.val; set_cpu_flag(CIF_MCCK_PENDING); } else { /* * Couldn't restore all register contents while in * kernel mode -> stopping machine. */ - s390_handle_damage("unable to revalidate registers."); + s390_handle_damage(); } } - if (mci->cd) { + if (mci.cd) { /* Timing facility damage */ - s390_handle_damage("TOD clock damaged"); + s390_handle_damage(); } - if (mci->ed && mci->ec) { + if (mci.ed && mci.ec) { /* External damage */ if (S390_lowcore.external_damage_code & (1U << ED_ETR_SYNC)) - etr_sync_check(); + mcck->etr_queue |= etr_sync_check(); if (S390_lowcore.external_damage_code & (1U << ED_ETR_SWITCH)) - etr_switch_to_local(); + mcck->etr_queue |= etr_switch_to_local(); if (S390_lowcore.external_damage_code & (1U << ED_STP_SYNC)) - stp_sync_check(); + mcck->stp_queue |= stp_sync_check(); if (S390_lowcore.external_damage_code & (1U << ED_STP_ISLAND)) - stp_island_check(); + mcck->stp_queue |= stp_island_check(); + if (mcck->etr_queue || mcck->stp_queue) + set_cpu_flag(CIF_MCCK_PENDING); } - if (mci->se) + if (mci.se) /* Storage error uncorrected */ - s390_handle_damage("received storage error uncorrected " - "machine check."); - if (mci->ke) + s390_handle_damage(); + if (mci.ke) /* Storage key-error uncorrected */ - s390_handle_damage("received storage key-error uncorrected " - "machine check."); - if (mci->ds && mci->fa) + s390_handle_damage(); + if (mci.ds && mci.fa) /* Storage degradation */ - s390_handle_damage("received storage degradation machine " - "check."); - if (mci->cp) { + s390_handle_damage(); + if (mci.cp) { /* Channel report word pending */ mcck->channel_report = 1; set_cpu_flag(CIF_MCCK_PENDING); } - if (mci->w) { + if (mci.w) { /* Warning pending */ mcck->warning = 1; set_cpu_flag(CIF_MCCK_PENDING); diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index b973972..3d8da1e 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -1019,11 +1019,13 @@ static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr) break; } - /* The host-program-parameter (hpp) contains the pid of - * the CPU thread as set by sie64a() in entry.S. - * If non-zero assume a guest sample. + /* + * A non-zero guest program parameter indicates a guest + * sample. + * Note that some early samples might be misaccounted to + * the host. */ - if (sfr->basic.hpp) + if (sfr->basic.gpp) sde_regs->in_guest = 1; overflow = 0; diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index f2dac9f..688a3aa 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -23,6 +23,7 @@ #include <linux/kprobes.h> #include <linux/random.h> #include <linux/module.h> +#include <linux/init_task.h> #include <asm/io.h> #include <asm/processor.h> #include <asm/vtimer.h> @@ -36,6 +37,9 @@ asmlinkage void ret_from_fork(void) asm ("ret_from_fork"); +/* FPU save area for the init task */ +__vector128 init_task_fpu_regs[__NUM_VXRS] __init_task_data; + /* * Return saved PC of a blocked thread. used in kernel/sched. * resume in entry.S does not create a new stack frame, it @@ -87,31 +91,29 @@ void arch_release_task_struct(struct task_struct *tsk) int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) { + size_t fpu_regs_size; + *dst = *src; - /* Set up a new floating-point register save area */ - dst->thread.fpu.fpc = 0; - dst->thread.fpu.flags = 0; /* Always start with VX disabled */ - dst->thread.fpu.fprs = kzalloc(sizeof(freg_t) * __NUM_FPRS, - GFP_KERNEL|__GFP_REPEAT); - if (!dst->thread.fpu.fprs) + /* + * If the vector extension is available, it is enabled for all tasks, + * and, thus, the FPU register save area must be allocated accordingly. + */ + fpu_regs_size = MACHINE_HAS_VX ? sizeof(__vector128) * __NUM_VXRS + : sizeof(freg_t) * __NUM_FPRS; + dst->thread.fpu.regs = kzalloc(fpu_regs_size, GFP_KERNEL|__GFP_REPEAT); + if (!dst->thread.fpu.regs) return -ENOMEM; /* * Save the floating-point or vector register state of the current - * task. The state is not saved for early kernel threads, for example, - * the init_task, which do not have an allocated save area. - * The CIF_FPU flag is set in any case to lazy clear or restore a saved - * state when switching to a different task or returning to user space. + * task and set the CIF_FPU flag to lazy restore the FPU register + * state when returning to user space. */ save_fpu_regs(); dst->thread.fpu.fpc = current->thread.fpu.fpc; - if (is_vx_task(current)) - convert_vx_to_fp(dst->thread.fpu.fprs, - current->thread.fpu.vxrs); - else - memcpy(dst->thread.fpu.fprs, current->thread.fpu.fprs, - sizeof(freg_t) * __NUM_FPRS); + memcpy(dst->thread.fpu.regs, current->thread.fpu.regs, fpu_regs_size); + return 0; } @@ -169,7 +171,6 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp, /* Don't copy runtime instrumentation info */ p->thread.ri_cb = NULL; - p->thread.ri_signum = 0; frame->childregs.psw.mask &= ~PSW_MASK_RI; /* Set a new TLS ? */ @@ -199,7 +200,7 @@ int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs) save_fpu_regs(); fpregs->fpc = current->thread.fpu.fpc; fpregs->pad = 0; - if (is_vx_task(current)) + if (MACHINE_HAS_VX) convert_vx_to_fp((freg_t *)&fpregs->fprs, current->thread.fpu.vxrs); else diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index e6e077a..7ce00e7 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -11,6 +11,7 @@ #include <linux/seq_file.h> #include <linux/delay.h> #include <linux/cpu.h> +#include <asm/diag.h> #include <asm/elf.h> #include <asm/lowcore.h> #include <asm/param.h> @@ -20,8 +21,10 @@ static DEFINE_PER_CPU(struct cpuid, cpu_id); void notrace cpu_relax(void) { - if (!smp_cpu_mtid && MACHINE_HAS_DIAG44) + if (!smp_cpu_mtid && MACHINE_HAS_DIAG44) { + diag_stat_inc(DIAG_STAT_X044); asm volatile("diag 0,0,0x44"); + } barrier(); } EXPORT_SYMBOL(cpu_relax); diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 8b1c8e3..01c37b3 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -239,12 +239,12 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr) * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) tmp = *(addr_t *) ((addr_t) child->thread.fpu.vxrs + 2*offset); else tmp = *(addr_t *) - ((addr_t) &child->thread.fpu.fprs + offset); + ((addr_t) child->thread.fpu.fprs + offset); } else if (addr < (addr_t) (&dummy->regs.per_info + 1)) { /* @@ -383,12 +383,12 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data) * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) *(addr_t *)((addr_t) child->thread.fpu.vxrs + 2*offset) = data; else *(addr_t *)((addr_t) - &child->thread.fpu.fprs + offset) = data; + child->thread.fpu.fprs + offset) = data; } else if (addr < (addr_t) (&dummy->regs.per_info + 1)) { /* @@ -617,12 +617,12 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr) * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) tmp = *(__u32 *) ((addr_t) child->thread.fpu.vxrs + 2*offset); else tmp = *(__u32 *) - ((addr_t) &child->thread.fpu.fprs + offset); + ((addr_t) child->thread.fpu.fprs + offset); } else if (addr < (addr_t) (&dummy32->regs.per_info + 1)) { /* @@ -742,12 +742,12 @@ static int __poke_user_compat(struct task_struct *child, * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) *(__u32 *)((addr_t) child->thread.fpu.vxrs + 2*offset) = tmp; else *(__u32 *)((addr_t) - &child->thread.fpu.fprs + offset) = tmp; + child->thread.fpu.fprs + offset) = tmp; } else if (addr < (addr_t) (&dummy32->regs.per_info + 1)) { /* @@ -981,7 +981,7 @@ static int s390_fpregs_set(struct task_struct *target, if (rc) return rc; - if (is_vx_task(target)) + if (MACHINE_HAS_VX) convert_fp_to_vx(target->thread.fpu.vxrs, fprs); else memcpy(target->thread.fpu.fprs, &fprs, sizeof(fprs)); @@ -1047,13 +1047,10 @@ static int s390_vxrs_low_get(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (is_vx_task(target)) { - if (target == current) - save_fpu_regs(); - for (i = 0; i < __NUM_VXRS_LOW; i++) - vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1); - } else - memset(vxrs, 0, sizeof(vxrs)); + if (target == current) + save_fpu_regs(); + for (i = 0; i < __NUM_VXRS_LOW; i++) + vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1); return user_regset_copyout(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1); } @@ -1067,11 +1064,7 @@ static int s390_vxrs_low_set(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (!is_vx_task(target)) { - rc = alloc_vector_registers(target); - if (rc) - return rc; - } else if (target == current) + if (target == current) save_fpu_regs(); rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1); @@ -1091,13 +1084,10 @@ static int s390_vxrs_high_get(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (is_vx_task(target)) { - if (target == current) - save_fpu_regs(); - memcpy(vxrs, target->thread.fpu.vxrs + __NUM_VXRS_LOW, - sizeof(vxrs)); - } else - memset(vxrs, 0, sizeof(vxrs)); + if (target == current) + save_fpu_regs(); + memcpy(vxrs, target->thread.fpu.vxrs + __NUM_VXRS_LOW, sizeof(vxrs)); + return user_regset_copyout(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1); } @@ -1110,11 +1100,7 @@ static int s390_vxrs_high_set(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (!is_vx_task(target)) { - rc = alloc_vector_registers(target); - if (rc) - return rc; - } else if (target == current) + if (target == current) save_fpu_regs(); rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, diff --git a/arch/s390/kernel/runtime_instr.c b/arch/s390/kernel/runtime_instr.c index 26b4ae9..fffa0e5 100644 --- a/arch/s390/kernel/runtime_instr.c +++ b/arch/s390/kernel/runtime_instr.c @@ -18,11 +18,6 @@ /* empty control block to disable RI by loading it */ struct runtime_instr_cb runtime_instr_empty_cb; -static int runtime_instr_avail(void) -{ - return test_facility(64); -} - static void disable_runtime_instr(void) { struct pt_regs *regs = task_pt_regs(current); @@ -40,7 +35,6 @@ static void disable_runtime_instr(void) static void init_runtime_instr_cb(struct runtime_instr_cb *cb) { cb->buf_limit = 0xfff; - cb->int_requested = 1; cb->pstate = 1; cb->pstate_set_buf = 1; cb->pstate_sample = 1; @@ -57,46 +51,14 @@ void exit_thread_runtime_instr(void) return; disable_runtime_instr(); kfree(task->thread.ri_cb); - task->thread.ri_signum = 0; task->thread.ri_cb = NULL; } -static void runtime_instr_int_handler(struct ext_code ext_code, - unsigned int param32, unsigned long param64) -{ - struct siginfo info; - - if (!(param32 & CPU_MF_INT_RI_MASK)) - return; - - inc_irq_stat(IRQEXT_CMR); - - if (!current->thread.ri_cb) - return; - if (current->thread.ri_signum < SIGRTMIN || - current->thread.ri_signum > SIGRTMAX) { - WARN_ON_ONCE(1); - return; - } - - memset(&info, 0, sizeof(info)); - info.si_signo = current->thread.ri_signum; - info.si_code = SI_QUEUE; - if (param32 & CPU_MF_INT_RI_BUF_FULL) - info.si_int = ENOBUFS; - else if (param32 & CPU_MF_INT_RI_HALTED) - info.si_int = ECANCELED; - else - return; /* unknown reason */ - - send_sig_info(current->thread.ri_signum, &info, current); -} - -SYSCALL_DEFINE2(s390_runtime_instr, int, command, int, signum) +SYSCALL_DEFINE1(s390_runtime_instr, int, command) { struct runtime_instr_cb *cb; - if (!runtime_instr_avail()) + if (!test_facility(64)) return -EOPNOTSUPP; if (command == S390_RUNTIME_INSTR_STOP) { @@ -106,8 +68,7 @@ SYSCALL_DEFINE2(s390_runtime_instr, int, command, int, signum) return 0; } - if (command != S390_RUNTIME_INSTR_START || - (signum < SIGRTMIN || signum > SIGRTMAX)) + if (command != S390_RUNTIME_INSTR_START) return -EINVAL; if (!current->thread.ri_cb) { @@ -120,7 +81,6 @@ SYSCALL_DEFINE2(s390_runtime_instr, int, command, int, signum) } init_runtime_instr_cb(cb); - current->thread.ri_signum = signum; /* now load the control block to make it available */ preempt_disable(); @@ -129,21 +89,3 @@ SYSCALL_DEFINE2(s390_runtime_instr, int, command, int, signum) preempt_enable(); return 0; } - -static int __init runtime_instr_init(void) -{ - int rc; - - if (!runtime_instr_avail()) - return 0; - - irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT); - rc = register_external_irq(EXT_IRQ_MEASURE_ALERT, - runtime_instr_int_handler); - if (rc) - irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT); - else - pr_info("Runtime instrumentation facility initialized\n"); - return rc; -} -device_initcall(runtime_instr_init); diff --git a/arch/s390/kernel/s390_ksyms.c b/arch/s390/kernel/s390_ksyms.c index 5090d3d..e67453b 100644 --- a/arch/s390/kernel/s390_ksyms.c +++ b/arch/s390/kernel/s390_ksyms.c @@ -1,6 +1,6 @@ #include <linux/module.h> #include <linux/kvm_host.h> -#include <asm/fpu-internal.h> +#include <asm/fpu/api.h> #include <asm/ftrace.h> #ifdef CONFIG_FUNCTION_TRACER @@ -10,7 +10,6 @@ EXPORT_SYMBOL(_mcount); EXPORT_SYMBOL(sie64a); EXPORT_SYMBOL(sie_exit); EXPORT_SYMBOL(save_fpu_regs); -EXPORT_SYMBOL(__ctl_set_vx); #endif EXPORT_SYMBOL(memcpy); EXPORT_SYMBOL(memset); diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 9549af1..028cc46 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -179,7 +179,7 @@ static int save_sigregs_ext(struct pt_regs *regs, int i; /* Save vector registers to signal stack */ - if (is_vx_task(current)) { + if (MACHINE_HAS_VX) { for (i = 0; i < __NUM_VXRS_LOW; i++) vxrs[i] = *((__u64 *)(current->thread.fpu.vxrs + i) + 1); if (__copy_to_user(&sregs_ext->vxrs_low, vxrs, @@ -199,7 +199,7 @@ static int restore_sigregs_ext(struct pt_regs *regs, int i; /* Restore vector registers from signal stack */ - if (is_vx_task(current)) { + if (MACHINE_HAS_VX) { if (__copy_from_user(vxrs, &sregs_ext->vxrs_low, sizeof(sregs_ext->vxrs_low)) || __copy_from_user(current->thread.fpu.vxrs + __NUM_VXRS_LOW, @@ -381,8 +381,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, uc_flags = 0; if (MACHINE_HAS_VX) { frame_size += sizeof(_sigregs_ext); - if (is_vx_task(current)) - uc_flags |= UC_VXRS; + uc_flags |= UC_VXRS; } frame = get_sigframe(&ksig->ka, regs, frame_size); if (frame == (void __user *) -1UL) diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index c6355e6..9062df5 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -33,6 +33,7 @@ #include <linux/crash_dump.h> #include <linux/memblock.h> #include <asm/asm-offsets.h> +#include <asm/diag.h> #include <asm/switch_to.h> #include <asm/facility.h> #include <asm/ipl.h> @@ -261,6 +262,8 @@ static void pcpu_attach_task(struct pcpu *pcpu, struct task_struct *tsk) + THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs); lc->thread_info = (unsigned long) task_thread_info(tsk); lc->current_task = (unsigned long) tsk; + lc->lpp = LPP_MAGIC; + lc->current_pid = tsk->pid; lc->user_timer = ti->user_timer; lc->system_timer = ti->system_timer; lc->steal_timer = 0; @@ -375,11 +378,14 @@ int smp_vcpu_scheduled(int cpu) void smp_yield_cpu(int cpu) { - if (MACHINE_HAS_DIAG9C) + if (MACHINE_HAS_DIAG9C) { + diag_stat_inc_norecursion(DIAG_STAT_X09C); asm volatile("diag %0,0,0x9c" : : "d" (pcpu_devices[cpu].address)); - else if (MACHINE_HAS_DIAG44) + } else if (MACHINE_HAS_DIAG44) { + diag_stat_inc_norecursion(DIAG_STAT_X044); asm volatile("diag 0,0,0x44"); + } } /* diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 017c3a9..99f84ac31 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -542,16 +542,17 @@ arch_initcall(etr_init); * Switch to local machine check. This is called when the last usable * ETR port goes inactive. After switch to local the clock is not in sync. */ -void etr_switch_to_local(void) +int etr_switch_to_local(void) { if (!etr_eacr.sl) - return; + return 0; disable_sync_clock(NULL); if (!test_and_set_bit(ETR_EVENT_SWITCH_LOCAL, &etr_events)) { etr_eacr.es = etr_eacr.sl = 0; etr_setr(&etr_eacr); - queue_work(time_sync_wq, &etr_work); + return 1; } + return 0; } /* @@ -560,16 +561,22 @@ void etr_switch_to_local(void) * After a ETR sync check the clock is not in sync. The machine check * is broadcasted to all cpus at the same time. */ -void etr_sync_check(void) +int etr_sync_check(void) { if (!etr_eacr.es) - return; + return 0; disable_sync_clock(NULL); if (!test_and_set_bit(ETR_EVENT_SYNC_CHECK, &etr_events)) { etr_eacr.es = 0; etr_setr(&etr_eacr); - queue_work(time_sync_wq, &etr_work); + return 1; } + return 0; +} + +void etr_queue_work(void) +{ + queue_work(time_sync_wq, &etr_work); } /* @@ -1504,10 +1511,10 @@ static void stp_timing_alert(struct stp_irq_parm *intparm) * After a STP sync check the clock is not in sync. The machine check * is broadcasted to all cpus at the same time. */ -void stp_sync_check(void) +int stp_sync_check(void) { disable_sync_clock(NULL); - queue_work(time_sync_wq, &stp_work); + return 1; } /* @@ -1516,12 +1523,16 @@ void stp_sync_check(void) * have matching CTN ids and have a valid stratum-1 configuration * but the configurations do not match. */ -void stp_island_check(void) +int stp_island_check(void) { disable_sync_clock(NULL); - queue_work(time_sync_wq, &stp_work); + return 1; } +void stp_queue_work(void) +{ + queue_work(time_sync_wq, &stp_work); +} static int stp_sync_clock(void *data) { diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index bf05e7f..40b8102 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -84,6 +84,7 @@ static struct mask_info *add_cpus_to_mask(struct topology_core *tl_core, struct mask_info *socket, int one_socket_per_cpu) { + struct cpu_topology_s390 *topo; unsigned int core; for_each_set_bit(core, &tl_core->mask[0], TOPOLOGY_CORE_BITS) { @@ -95,15 +96,16 @@ static struct mask_info *add_cpus_to_mask(struct topology_core *tl_core, if (lcpu < 0) continue; for (i = 0; i <= smp_cpu_mtid; i++) { - per_cpu(cpu_topology, lcpu + i).book_id = book->id; - per_cpu(cpu_topology, lcpu + i).core_id = rcore; - per_cpu(cpu_topology, lcpu + i).thread_id = lcpu + i; + topo = &per_cpu(cpu_topology, lcpu + i); + topo->book_id = book->id; + topo->core_id = rcore; + topo->thread_id = lcpu + i; cpumask_set_cpu(lcpu + i, &book->mask); cpumask_set_cpu(lcpu + i, &socket->mask); if (one_socket_per_cpu) - per_cpu(cpu_topology, lcpu + i).socket_id = rcore; + topo->socket_id = rcore; else - per_cpu(cpu_topology, lcpu + i).socket_id = socket->id; + topo->socket_id = socket->id; smp_cpu_set_polarization(lcpu + i, tl_core->pp); } if (one_socket_per_cpu) @@ -247,17 +249,19 @@ int topology_set_cpu_management(int fc) static void update_cpu_masks(void) { + struct cpu_topology_s390 *topo; int cpu; for_each_possible_cpu(cpu) { - per_cpu(cpu_topology, cpu).thread_mask = cpu_thread_map(cpu); - per_cpu(cpu_topology, cpu).core_mask = cpu_group_map(&socket_info, cpu); - per_cpu(cpu_topology, cpu).book_mask = cpu_group_map(&book_info, cpu); + topo = &per_cpu(cpu_topology, cpu); + topo->thread_mask = cpu_thread_map(cpu); + topo->core_mask = cpu_group_map(&socket_info, cpu); + topo->book_mask = cpu_group_map(&book_info, cpu); if (!MACHINE_HAS_TOPOLOGY) { - per_cpu(cpu_topology, cpu).thread_id = cpu; - per_cpu(cpu_topology, cpu).core_id = cpu; - per_cpu(cpu_topology, cpu).socket_id = cpu; - per_cpu(cpu_topology, cpu).book_id = cpu; + topo->thread_id = cpu; + topo->core_id = cpu; + topo->socket_id = cpu; + topo->book_id = cpu; } } numa_update_cpu_topology(); diff --git a/arch/s390/kernel/trace.c b/arch/s390/kernel/trace.c new file mode 100644 index 0000000..73239bb --- /dev/null +++ b/arch/s390/kernel/trace.c @@ -0,0 +1,29 @@ +/* + * Tracepoint definitions for s390 + * + * Copyright IBM Corp. 2015 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#include <linux/percpu.h> +#define CREATE_TRACE_POINTS +#include <asm/trace/diag.h> + +EXPORT_TRACEPOINT_SYMBOL(diagnose); + +static DEFINE_PER_CPU(unsigned int, diagnose_trace_depth); + +void trace_diagnose_norecursion(int diag_nr) +{ + unsigned long flags; + unsigned int *depth; + + local_irq_save(flags); + depth = this_cpu_ptr(&diagnose_trace_depth); + if (*depth == 0) { + (*depth)++; + trace_diagnose(diag_nr); + (*depth)--; + } + local_irq_restore(flags); +} diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 9861613..1b18118 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -19,7 +19,7 @@ #include <linux/sched.h> #include <linux/mm.h> #include <linux/slab.h> -#include <asm/fpu-internal.h> +#include <asm/fpu/api.h> #include "entry.h" int show_unhandled_signals = 1; @@ -224,29 +224,6 @@ NOKPROBE_SYMBOL(illegal_op); DO_ERROR_INFO(specification_exception, SIGILL, ILL_ILLOPN, "specification exception"); -int alloc_vector_registers(struct task_struct *tsk) -{ - __vector128 *vxrs; - freg_t *fprs; - - /* Allocate vector register save area. */ - vxrs = kzalloc(sizeof(__vector128) * __NUM_VXRS, - GFP_KERNEL|__GFP_REPEAT); - if (!vxrs) - return -ENOMEM; - preempt_disable(); - if (tsk == current) - save_fpu_regs(); - /* Copy the 16 floating point registers */ - convert_fp_to_vx(vxrs, tsk->thread.fpu.fprs); - fprs = tsk->thread.fpu.fprs; - tsk->thread.fpu.vxrs = vxrs; - tsk->thread.fpu.flags |= FPU_USE_VX; - kfree(fprs); - preempt_enable(); - return 0; -} - void vector_exception(struct pt_regs *regs) { int si_code, vic; @@ -281,13 +258,6 @@ void vector_exception(struct pt_regs *regs) do_trap(regs, SIGFPE, si_code, "vector exception"); } -static int __init disable_vector_extension(char *str) -{ - S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX; - return 1; -} -__setup("novx", disable_vector_extension); - void data_exception(struct pt_regs *regs) { __u16 __user *location; @@ -296,15 +266,6 @@ void data_exception(struct pt_regs *regs) location = get_trap_ip(regs); save_fpu_regs(); - /* Check for vector register enablement */ - if (MACHINE_HAS_VX && !is_vx_task(current) && - (current->thread.fpu.fpc & FPC_DXC_MASK) == 0xfe00) { - alloc_vector_registers(current); - /* Vector data exception is suppressing, rewind psw. */ - regs->psw.addr = __rewind_psw(regs->psw, regs->int_code >> 16); - clear_pt_regs_flag(regs, PIF_PER_TRAP); - return; - } if (current->thread.fpu.fpc & FPC_DXC_MASK) signal = SIGFPE; else diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index 0d58269..59eddb0 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -299,7 +299,7 @@ static int __init vdso_init(void) get_page(virt_to_page(vdso_data)); - smp_wmb(); + smp_mb(); return 0; } diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 0a67c40..c6b4063 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -1292,7 +1292,6 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) static inline void save_fpu_to(struct fpu *dst) { dst->fpc = current->thread.fpu.fpc; - dst->flags = current->thread.fpu.flags; dst->regs = current->thread.fpu.regs; } @@ -1303,7 +1302,6 @@ static inline void save_fpu_to(struct fpu *dst) static inline void load_fpu_from(struct fpu *from) { current->thread.fpu.fpc = from->fpc; - current->thread.fpu.flags = from->flags; current->thread.fpu.regs = from->regs; } @@ -1315,15 +1313,12 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) if (test_kvm_facility(vcpu->kvm, 129)) { current->thread.fpu.fpc = vcpu->run->s.regs.fpc; - current->thread.fpu.flags = FPU_USE_VX; /* * Use the register save area in the SIE-control block * for register restore and save in kvm_arch_vcpu_put() */ current->thread.fpu.vxrs = (__vector128 *)&vcpu->run->s.regs.vrs; - /* Always enable the vector extension for KVM */ - __ctl_set_vx(); } else load_fpu_from(&vcpu->arch.guest_fpregs); @@ -2326,7 +2321,6 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) * registers and the FPC value and store them in the * guest_fpregs structure. */ - WARN_ON(!is_vx_task(current)); /* XXX remove later */ vcpu->arch.guest_fpregs.fpc = current->thread.fpu.fpc; convert_vx_to_fp(vcpu->arch.guest_fpregs.fprs, current->thread.fpu.vxrs); diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c index 246a7eb..501dcd4 100644 --- a/arch/s390/lib/delay.c +++ b/arch/s390/lib/delay.c @@ -12,8 +12,10 @@ #include <linux/module.h> #include <linux/irqflags.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/vtimer.h> #include <asm/div64.h> +#include <asm/idle.h> void __delay(unsigned long loops) { @@ -30,26 +32,22 @@ EXPORT_SYMBOL(__delay); static void __udelay_disabled(unsigned long long usecs) { - unsigned long cr0, cr6, new; - u64 clock_saved, end; + unsigned long cr0, cr0_new, psw_mask; + struct s390_idle_data idle; + u64 end; end = get_tod_clock() + (usecs << 12); - clock_saved = local_tick_disable(); __ctl_store(cr0, 0, 0); - __ctl_store(cr6, 6, 6); - new = (cr0 & 0xffff00e0) | 0x00000800; - __ctl_load(new , 0, 0); - new = 0; - __ctl_load(new, 6, 6); - lockdep_off(); - do { - set_clock_comparator(end); - enabled_wait(); - } while (get_tod_clock_fast() < end); - lockdep_on(); + cr0_new = cr0 & ~CR0_IRQ_SUBCLASS_MASK; + cr0_new |= (1UL << (63 - 52)); /* enable clock comparator irq */ + __ctl_load(cr0_new, 0, 0); + psw_mask = __extract_psw() | PSW_MASK_EXT | PSW_MASK_WAIT; + set_clock_comparator(end); + set_cpu_flag(CIF_IGNORE_IRQ); + psw_idle(&idle, psw_mask); + clear_cpu_flag(CIF_IGNORE_IRQ); + set_clock_comparator(S390_lowcore.clock_comparator); __ctl_load(cr0, 0, 0); - __ctl_load(cr6, 6, 6); - local_tick_enable(clock_saved); } static void __udelay_enabled(unsigned long long usecs) diff --git a/arch/s390/lib/find.c b/arch/s390/lib/find.c index 922003c..d90b924 100644 --- a/arch/s390/lib/find.c +++ b/arch/s390/lib/find.c @@ -1,10 +1,8 @@ /* * MSB0 numbered special bitops handling. * - * On s390x the bits are numbered: + * The bits are numbered: * |0..............63|64............127|128...........191|192...........255| - * and on s390: - * |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255| * * The reason for this bit numbering is the fact that the hardware sets bits * in a bitmap starting at bit 0 (MSB) and we don't want to scan the bitmap diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c index d6c9991..427aa44 100644 --- a/arch/s390/lib/spinlock.c +++ b/arch/s390/lib/spinlock.c @@ -197,7 +197,7 @@ void _raw_write_lock_wait(arch_rwlock_t *rw, unsigned int prev) } old = ACCESS_ONCE(rw->lock); owner = ACCESS_ONCE(rw->owner); - smp_rmb(); + smp_mb(); if ((int) old >= 0) { prev = __RAW_LOCK(&rw->lock, 0x80000000, __RAW_OP_OR); old = prev; @@ -231,7 +231,7 @@ void _raw_write_lock_wait(arch_rwlock_t *rw) _raw_compare_and_swap(&rw->lock, old, old | 0x80000000)) prev = old; else - smp_rmb(); + smp_mb(); if ((old & 0x7fffffff) == 0 && (int) prev >= 0) break; if (MACHINE_HAS_CAD) diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index 23c4969..18fccc3 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -18,6 +18,7 @@ #include <linux/bootmem.h> #include <linux/ctype.h> #include <linux/ioport.h> +#include <asm/diag.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/ebcdic.h> @@ -112,6 +113,7 @@ dcss_set_subcodes(void) ry = DCSS_FINDSEGX; strcpy(name, "dummy"); + diag_stat_inc(DIAG_STAT_X064); asm volatile( " diag %0,%1,0x64\n" "0: ipm %2\n" @@ -205,6 +207,7 @@ dcss_diag(int *func, void *parameter, ry = (unsigned long) *func; /* 64-bit Diag x'64' new subcode, keep in 64-bit addressing mode */ + diag_stat_inc(DIAG_STAT_X064); if (*func > DCSS_SEGEXT) asm volatile( " diag %0,%1,0x64\n" diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index f985856..ec1a30d 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -30,6 +30,7 @@ #include <linux/uaccess.h> #include <linux/hugetlb.h> #include <asm/asm-offsets.h> +#include <asm/diag.h> #include <asm/pgtable.h> #include <asm/irq.h> #include <asm/mmu_context.h> @@ -589,7 +590,7 @@ int pfault_init(void) .reffcode = 0, .refdwlen = 5, .refversn = 2, - .refgaddr = __LC_CURRENT_PID, + .refgaddr = __LC_LPP, .refselmk = 1ULL << 48, .refcmpmk = 1ULL << 48, .reserved = __PF_RES_FIELD }; @@ -597,6 +598,7 @@ int pfault_init(void) if (pfault_disable) return -1; + diag_stat_inc(DIAG_STAT_X258); asm volatile( " diag %1,%0,0x258\n" "0: j 2f\n" @@ -618,6 +620,7 @@ void pfault_fini(void) if (pfault_disable) return; + diag_stat_inc(DIAG_STAT_X258); asm volatile( " diag %0,0,0x258\n" "0:\n" @@ -646,7 +649,7 @@ static void pfault_interrupt(struct ext_code ext_code, return; inc_irq_stat(IRQEXT_PFL); /* Get the token (= pid of the affected task). */ - pid = param64; + pid = param64 & LPP_PFAULT_PID_MASK; rcu_read_lock(); tsk = find_task_by_pid_ns(pid, &init_pid_ns); if (tsk) diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c index fb4bf2c..f81096b 100644 --- a/arch/s390/mm/hugetlbpage.c +++ b/arch/s390/mm/hugetlbpage.c @@ -40,6 +40,7 @@ static inline pmd_t __pte_to_pmd(pte_t pte) pmd_val(pmd) |= (pte_val(pte) & _PAGE_PROTECT); pmd_val(pmd) |= (pte_val(pte) & _PAGE_DIRTY) << 10; pmd_val(pmd) |= (pte_val(pte) & _PAGE_YOUNG) << 10; + pmd_val(pmd) |= (pte_val(pte) & _PAGE_SOFT_DIRTY) << 13; } else pmd_val(pmd) = _SEGMENT_ENTRY_INVALID; return pmd; @@ -78,6 +79,7 @@ static inline pte_t __pmd_to_pte(pmd_t pmd) pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_PROTECT); pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_DIRTY) >> 10; pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_YOUNG) >> 10; + pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_SOFT_DIRTY) >> 13; } else pte_val(pte) = _PAGE_INVALID; return pte; diff --git a/arch/s390/numa/mode_emu.c b/arch/s390/numa/mode_emu.c index 30b2698a..828d069 100644 --- a/arch/s390/numa/mode_emu.c +++ b/arch/s390/numa/mode_emu.c @@ -436,9 +436,15 @@ static void emu_update_cpu_topology(void) */ static unsigned long emu_setup_size_adjust(unsigned long size) { + unsigned long size_new; + size = size ? : CONFIG_EMU_SIZE; - size = roundup(size, memory_block_size_bytes()); - return size; + size_new = roundup(size, memory_block_size_bytes()); + if (size_new == size) + return size; + pr_warn("Increasing memory stripe size from %ld MB to %ld MB\n", + size >> 20, size_new >> 20); + return size_new; } /* diff --git a/arch/s390/pci/pci_insn.c b/arch/s390/pci/pci_insn.c index dcc2634..10ca15d 100644 --- a/arch/s390/pci/pci_insn.c +++ b/arch/s390/pci/pci_insn.c @@ -16,11 +16,11 @@ static inline void zpci_err_insn(u8 cc, u8 status, u64 req, u64 offset) { struct { - u8 cc; - u8 status; u64 req; u64 offset; - } data = {cc, status, req, offset}; + u8 cc; + u8 status; + } __packed data = {req, offset, cc, status}; zpci_err_hex(&data, sizeof(data)); } diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index c0b41f11..6ec0c8b 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -325,6 +325,16 @@ static inline pmd_t pmd_mksoft_dirty(pmd_t pmd) return pmd_set_flags(pmd, _PAGE_SOFT_DIRTY); } +static inline pte_t pte_clear_soft_dirty(pte_t pte) +{ + return pte_clear_flags(pte, _PAGE_SOFT_DIRTY); +} + +static inline pmd_t pmd_clear_soft_dirty(pmd_t pmd) +{ + return pmd_clear_flags(pmd, _PAGE_SOFT_DIRTY); +} + #endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */ /* diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index f73d2f5..a263c10 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -3030,6 +3030,7 @@ static void dasd_setup_queue(struct dasd_block *block) } else { max = block->base->discipline->max_blocks << block->s2b_shift; } + queue_flag_set_unlocked(QUEUE_FLAG_NONROT, block->request_queue); blk_queue_logical_block_size(block->request_queue, block->bp_block); blk_queue_max_hw_sectors(block->request_queue, max); diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c index fe07f31..184b1db 100644 --- a/drivers/s390/block/dasd_alias.c +++ b/drivers/s390/block/dasd_alias.c @@ -824,8 +824,11 @@ static void flush_all_alias_devices_on_lcu(struct alias_lcu *lcu) * were waiting for the flush */ if (device == list_first_entry(&active, - struct dasd_device, alias_list)) + struct dasd_device, alias_list)) { list_move(&device->alias_list, &lcu->active_devices); + private = (struct dasd_eckd_private *) device->private; + private->pavgroup = NULL; + } } spin_unlock_irqrestore(&lcu->lock, flags); } diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index c062f16..cb61f30 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -21,6 +21,7 @@ #include <asm/dasd.h> #include <asm/debug.h> +#include <asm/diag.h> #include <asm/ebcdic.h> #include <asm/io.h> #include <asm/irq.h> @@ -76,6 +77,7 @@ static inline int dia250(void *iob, int cmd) int rc; rc = 3; + diag_stat_inc(DIAG_STAT_X250); asm volatile( " diag 2,%2,0x250\n" "0: ipm %0\n" diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 62a3235..9083247 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1032,6 +1032,21 @@ static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len) return 0; } +static void dasd_eckd_clear_conf_data(struct dasd_device *device) +{ + struct dasd_eckd_private *private; + int i; + + private = (struct dasd_eckd_private *) device->private; + private->conf_data = NULL; + private->conf_len = 0; + for (i = 0; i < 8; i++) { + kfree(private->path_conf_data[i]); + private->path_conf_data[i] = NULL; + } +} + + static int dasd_eckd_read_conf(struct dasd_device *device) { void *conf_data; @@ -1068,20 +1083,10 @@ static int dasd_eckd_read_conf(struct dasd_device *device) path_data->opm |= lpm; continue; /* no error */ } - /* translate path mask to position in mask */ - pos = 8 - ffs(lpm); - kfree(private->path_conf_data[pos]); - if ((__u8 *)private->path_conf_data[pos] == - private->conf_data) { - private->conf_data = NULL; - private->conf_len = 0; - conf_data_saved = 0; - } - private->path_conf_data[pos] = - (struct dasd_conf_data *) conf_data; /* save first valid configuration data */ if (!conf_data_saved) { - kfree(private->conf_data); + /* initially clear previously stored conf_data */ + dasd_eckd_clear_conf_data(device); private->conf_data = conf_data; private->conf_len = conf_len; if (dasd_eckd_identify_conf_parts(private)) { @@ -1090,6 +1095,10 @@ static int dasd_eckd_read_conf(struct dasd_device *device) kfree(conf_data); continue; } + pos = pathmask_to_pos(lpm); + /* store per path conf_data */ + private->path_conf_data[pos] = + (struct dasd_conf_data *) conf_data; /* * build device UID that other path data * can be compared to it @@ -1147,7 +1156,10 @@ static int dasd_eckd_read_conf(struct dasd_device *device) path_data->cablepm |= lpm; continue; } - + pos = pathmask_to_pos(lpm); + /* store per path conf_data */ + private->path_conf_data[pos] = + (struct dasd_conf_data *) conf_data; path_private.conf_data = NULL; path_private.conf_len = 0; } @@ -1159,7 +1171,12 @@ static int dasd_eckd_read_conf(struct dasd_device *device) path_data->ppm |= lpm; break; } - path_data->opm |= lpm; + if (!path_data->opm) { + path_data->opm = lpm; + dasd_generic_path_operational(device); + } else { + path_data->opm |= lpm; + } /* * if the path is used * it should not be in one of the negative lists @@ -4423,7 +4440,12 @@ static int dasd_eckd_restore_device(struct dasd_device *device) private = (struct dasd_eckd_private *) device->private; /* Read Configuration Data */ - dasd_eckd_read_conf(device); + rc = dasd_eckd_read_conf(device); + if (rc) { + DBF_EVENT_DEVID(DBF_WARNING, device->cdev, + "Read configuration data failed, rc=%d", rc); + goto out_err; + } dasd_eckd_get_uid(device, &temp_uid); /* Generate device unique id */ @@ -4439,13 +4461,18 @@ static int dasd_eckd_restore_device(struct dasd_device *device) /* register lcu with alias handling, enable PAV if this is a new lcu */ rc = dasd_alias_make_device_known_to_lcu(device); if (rc) - return rc; + goto out_err; set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr_flags); dasd_eckd_validate_server(device, cqr_flags); /* RE-Read Configuration Data */ - dasd_eckd_read_conf(device); + rc = dasd_eckd_read_conf(device); + if (rc) { + DBF_EVENT_DEVID(DBF_WARNING, device->cdev, + "Read configuration data failed, rc=%d", rc); + goto out_err2; + } /* Read Feature Codes */ dasd_eckd_read_features(device); @@ -4456,7 +4483,7 @@ static int dasd_eckd_restore_device(struct dasd_device *device) if (rc) { DBF_EVENT_DEVID(DBF_WARNING, device->cdev, "Read device characteristic failed, rc=%d", rc); - goto out_err; + goto out_err2; } spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); memcpy(&private->rdc_data, &temp_rdc_data, sizeof(temp_rdc_data)); @@ -4467,6 +4494,8 @@ static int dasd_eckd_restore_device(struct dasd_device *device) return 0; +out_err2: + dasd_alias_disconnect_device_from_lcu(device); out_err: return -1; } @@ -4671,7 +4700,7 @@ static struct dasd_conf_data *dasd_eckd_get_ref_conf(struct dasd_device *device, return conf_data; } out: - return private->path_conf_data[8 - ffs(lpum)]; + return private->path_conf_data[pathmask_to_pos(lpum)]; } /* @@ -4716,7 +4745,7 @@ static int dasd_eckd_cuir_scope(struct dasd_device *device, __u8 lpum, for (path = 0x80; path; path >>= 1) { /* initialise data per path */ bitmask = mask; - pos = 8 - ffs(path); + pos = pathmask_to_pos(path); conf_data = private->path_conf_data[pos]; pos = 8 - ffs(cuir->ned_map); ned = (char *) &conf_data->neds[pos]; @@ -4937,9 +4966,7 @@ static void dasd_eckd_handle_cuir(struct dasd_device *device, void *messages, ((u64 *)cuir)[0], ((u64 *)cuir)[1], ((u64 *)cuir)[2], ((u32 *)cuir)[3]); ccw_device_get_schid(device->cdev, &sch_id); - /* get position of path in mask */ - pos = 8 - ffs(lpum); - /* get channel path descriptor from this position */ + pos = pathmask_to_pos(lpum); desc = ccw_device_get_chp_desc(device->cdev, pos); if (cuir->code == CUIR_QUIESCE) { diff --git a/drivers/s390/char/diag_ftp.c b/drivers/s390/char/diag_ftp.c index 12db8db..a5ccbf6 100644 --- a/drivers/s390/char/diag_ftp.c +++ b/drivers/s390/char/diag_ftp.c @@ -15,6 +15,7 @@ #include <linux/wait.h> #include <linux/string.h> #include <asm/ctl_reg.h> +#include <asm/diag.h> #include "hmcdrv_ftp.h" #include "diag_ftp.h" @@ -102,6 +103,7 @@ static int diag_ftp_2c4(struct diag_ftp_ldfpl *fpl, { int rc; + diag_stat_inc(DIAG_STAT_X2C4); asm volatile( " diag %[addr],%[cmd],0x2c4\n" "0: j 2f\n" diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c index 35a84af..6010cd3 100644 --- a/drivers/s390/char/sclp_rw.c +++ b/drivers/s390/char/sclp_rw.c @@ -47,9 +47,9 @@ struct sclp_buffer * sclp_make_buffer(void *page, unsigned short columns, unsigned short htab) { struct sclp_buffer *buffer; - struct write_sccb *sccb; + struct sccb_header *sccb; - sccb = (struct write_sccb *) page; + sccb = (struct sccb_header *) page; /* * We keep the struct sclp_buffer structure at the end * of the sccb page. @@ -57,24 +57,16 @@ sclp_make_buffer(void *page, unsigned short columns, unsigned short htab) buffer = ((struct sclp_buffer *) ((addr_t) sccb + PAGE_SIZE)) - 1; buffer->sccb = sccb; buffer->retry_count = 0; - buffer->mto_number = 0; - buffer->mto_char_sum = 0; + buffer->messages = 0; + buffer->char_sum = 0; buffer->current_line = NULL; buffer->current_length = 0; buffer->columns = columns; buffer->htab = htab; /* initialize sccb */ - memset(sccb, 0, sizeof(struct write_sccb)); - sccb->header.length = sizeof(struct write_sccb); - sccb->msg_buf.header.length = sizeof(struct msg_buf); - sccb->msg_buf.header.type = EVTYP_MSG; - sccb->msg_buf.mdb.header.length = sizeof(struct mdb); - sccb->msg_buf.mdb.header.type = 1; - sccb->msg_buf.mdb.header.tag = 0xD4C4C240; /* ebcdic "MDB " */ - sccb->msg_buf.mdb.header.revision_code = 1; - sccb->msg_buf.mdb.go.length = sizeof(struct go); - sccb->msg_buf.mdb.go.type = 1; + memset(sccb, 0, sizeof(struct sccb_header)); + sccb->length = sizeof(struct sccb_header); return buffer; } @@ -90,37 +82,49 @@ sclp_unmake_buffer(struct sclp_buffer *buffer) } /* - * Initialize a new Message Text Object (MTO) at the end of the provided buffer - * with enough room for max_len characters. Return 0 on success. + * Initialize a new message the end of the provided buffer with + * enough room for max_len characters. Return 0 on success. */ static int sclp_initialize_mto(struct sclp_buffer *buffer, int max_len) { - struct write_sccb *sccb; + struct sccb_header *sccb; + struct msg_buf *msg; + struct mdb *mdb; + struct go *go; struct mto *mto; - int mto_size; + int msg_size; - /* max size of new Message Text Object including message text */ - mto_size = sizeof(struct mto) + max_len; + /* max size of new message including message text */ + msg_size = sizeof(struct msg_buf) + max_len; /* check if current buffer sccb can contain the mto */ sccb = buffer->sccb; - if ((MAX_SCCB_ROOM - sccb->header.length) < mto_size) + if ((MAX_SCCB_ROOM - sccb->length) < msg_size) return -ENOMEM; - /* find address of new message text object */ - mto = (struct mto *)(((addr_t) sccb) + sccb->header.length); + msg = (struct msg_buf *)((addr_t) sccb + sccb->length); + memset(msg, 0, sizeof(struct msg_buf)); + msg->header.length = sizeof(struct msg_buf); + msg->header.type = EVTYP_MSG; - /* - * fill the new Message-Text Object, - * starting behind the former last byte of the SCCB - */ - memset(mto, 0, sizeof(struct mto)); + mdb = &msg->mdb; + mdb->header.length = sizeof(struct mdb); + mdb->header.type = 1; + mdb->header.tag = 0xD4C4C240; /* ebcdic "MDB " */ + mdb->header.revision_code = 1; + + go = &mdb->go; + go->length = sizeof(struct go); + go->type = 1; + + mto = &mdb->mto; mto->length = sizeof(struct mto); mto->type = 4; /* message text object */ mto->line_type_flags = LNTPFLGS_ENDTEXT; /* end text */ /* set pointer to first byte after struct mto. */ + buffer->current_msg = msg; buffer->current_line = (char *) (mto + 1); buffer->current_length = 0; @@ -128,45 +132,37 @@ sclp_initialize_mto(struct sclp_buffer *buffer, int max_len) } /* - * Finalize MTO initialized by sclp_initialize_mto(), updating the sizes of - * MTO, enclosing MDB, event buffer and SCCB. + * Finalize message initialized by sclp_initialize_mto(), + * updating the sizes of MTO, enclosing MDB, event buffer and SCCB. */ static void sclp_finalize_mto(struct sclp_buffer *buffer) { - struct write_sccb *sccb; - struct mto *mto; - int str_len, mto_size; - - str_len = buffer->current_length; - buffer->current_line = NULL; - buffer->current_length = 0; - - /* real size of new Message Text Object including message text */ - mto_size = sizeof(struct mto) + str_len; - - /* find address of new message text object */ - sccb = buffer->sccb; - mto = (struct mto *)(((addr_t) sccb) + sccb->header.length); - - /* set size of message text object */ - mto->length = mto_size; + struct sccb_header *sccb; + struct msg_buf *msg; /* * update values of sizes * (SCCB, Event(Message) Buffer, Message Data Block) */ - sccb->header.length += mto_size; - sccb->msg_buf.header.length += mto_size; - sccb->msg_buf.mdb.header.length += mto_size; + sccb = buffer->sccb; + msg = buffer->current_msg; + msg->header.length += buffer->current_length; + msg->mdb.header.length += buffer->current_length; + msg->mdb.mto.length += buffer->current_length; + sccb->length += msg->header.length; /* * count number of buffered messages (= number of Message Text * Objects) and number of buffered characters * for the SCCB currently used for buffering and at all */ - buffer->mto_number++; - buffer->mto_char_sum += str_len; + buffer->messages++; + buffer->char_sum += buffer->current_length; + + buffer->current_line = NULL; + buffer->current_length = 0; + buffer->current_msg = NULL; } /* @@ -218,7 +214,13 @@ sclp_write(struct sclp_buffer *buffer, const unsigned char *msg, int count) break; case '\a': /* bell, one for several times */ /* set SCLP sound alarm bit in General Object */ - buffer->sccb->msg_buf.mdb.go.general_msg_flags |= + if (buffer->current_line == NULL) { + rc = sclp_initialize_mto(buffer, + buffer->columns); + if (rc) + return i_msg; + } + buffer->current_msg->mdb.go.general_msg_flags |= GNRLMSGFLGS_SNDALRM; break; case '\t': /* horizontal tabulator */ @@ -309,11 +311,13 @@ sclp_write(struct sclp_buffer *buffer, const unsigned char *msg, int count) int sclp_buffer_space(struct sclp_buffer *buffer) { + struct sccb_header *sccb; int count; - count = MAX_SCCB_ROOM - buffer->sccb->header.length; + sccb = buffer->sccb; + count = MAX_SCCB_ROOM - sccb->length; if (buffer->current_line != NULL) - count -= sizeof(struct mto) + buffer->current_length; + count -= sizeof(struct msg_buf) + buffer->current_length; return count; } @@ -325,7 +329,7 @@ sclp_chars_in_buffer(struct sclp_buffer *buffer) { int count; - count = buffer->mto_char_sum; + count = buffer->char_sum; if (buffer->current_line != NULL) count += buffer->current_length; return count; @@ -378,7 +382,7 @@ sclp_writedata_callback(struct sclp_req *request, void *data) { int rc; struct sclp_buffer *buffer; - struct write_sccb *sccb; + struct sccb_header *sccb; buffer = (struct sclp_buffer *) data; sccb = buffer->sccb; @@ -389,7 +393,7 @@ sclp_writedata_callback(struct sclp_req *request, void *data) return; } /* check SCLP response code and choose suitable action */ - switch (sccb->header.response_code) { + switch (sccb->response_code) { case 0x0020 : /* Normal completion, buffer processed, message(s) sent */ rc = 0; @@ -403,7 +407,7 @@ sclp_writedata_callback(struct sclp_req *request, void *data) /* remove processed buffers and requeue rest */ if (sclp_remove_processed((struct sccb_header *) sccb) > 0) { /* not all buffers were processed */ - sccb->header.response_code = 0x0000; + sccb->response_code = 0x0000; buffer->request.status = SCLP_REQ_FILLED; rc = sclp_add_request(request); if (rc == 0) @@ -419,14 +423,14 @@ sclp_writedata_callback(struct sclp_req *request, void *data) break; } /* retry request */ - sccb->header.response_code = 0x0000; + sccb->response_code = 0x0000; buffer->request.status = SCLP_REQ_FILLED; rc = sclp_add_request(request); if (rc == 0) return; break; default: - if (sccb->header.response_code == 0x71f0) + if (sccb->response_code == 0x71f0) rc = -ENOMEM; else rc = -EINVAL; @@ -445,25 +449,19 @@ int sclp_emit_buffer(struct sclp_buffer *buffer, void (*callback)(struct sclp_buffer *, int)) { - struct write_sccb *sccb; - /* add current line if there is one */ if (buffer->current_line != NULL) sclp_finalize_mto(buffer); /* Are there messages in the output buffer ? */ - if (buffer->mto_number == 0) + if (buffer->messages == 0) return -EIO; - sccb = buffer->sccb; - /* Use normal write message */ - sccb->msg_buf.header.type = EVTYP_MSG; - buffer->request.command = SCLP_CMDW_WRITE_EVENT_DATA; buffer->request.status = SCLP_REQ_FILLED; buffer->request.callback = sclp_writedata_callback; buffer->request.callback_data = buffer; - buffer->request.sccb = sccb; + buffer->request.sccb = buffer->sccb; buffer->callback = callback; return sclp_add_request(&buffer->request); } diff --git a/drivers/s390/char/sclp_rw.h b/drivers/s390/char/sclp_rw.h index 7a7bfc9..e3b0290 100644 --- a/drivers/s390/char/sclp_rw.h +++ b/drivers/s390/char/sclp_rw.h @@ -45,6 +45,7 @@ struct mdb_header { struct mdb { struct mdb_header header; struct go go; + struct mto mto; } __attribute__((packed)); struct msg_buf { @@ -52,14 +53,9 @@ struct msg_buf { struct mdb mdb; } __attribute__((packed)); -struct write_sccb { - struct sccb_header header; - struct msg_buf msg_buf; -} __attribute__((packed)); - /* The number of empty mto buffers that can be contained in a single sccb. */ -#define NR_EMPTY_MTO_PER_SCCB ((PAGE_SIZE - sizeof(struct sclp_buffer) - \ - sizeof(struct write_sccb)) / sizeof(struct mto)) +#define NR_EMPTY_MSG_PER_SCCB ((PAGE_SIZE - sizeof(struct sclp_buffer) - \ + sizeof(struct sccb_header)) / sizeof(struct msg_buf)) /* * data structure for information about list of SCCBs (only for writing), @@ -68,7 +64,8 @@ struct write_sccb { struct sclp_buffer { struct list_head list; /* list_head for sccb_info chain */ struct sclp_req request; - struct write_sccb *sccb; + void *sccb; + struct msg_buf *current_msg; char *current_line; int current_length; int retry_count; @@ -76,8 +73,8 @@ struct sclp_buffer { unsigned short columns; unsigned short htab; /* statistics about this buffer */ - unsigned int mto_char_sum; /* # chars in sccb */ - unsigned int mto_number; /* # mtos in sccb */ + unsigned int char_sum; /* # chars in sccb */ + unsigned int messages; /* # messages in sccb */ /* Callback that is called after reaching final status. */ void (*callback)(struct sclp_buffer *, int); }; diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c index 0036632..3c6e174 100644 --- a/drivers/s390/char/sclp_tty.c +++ b/drivers/s390/char/sclp_tty.c @@ -84,8 +84,8 @@ sclp_tty_close(struct tty_struct *tty, struct file *filp) * to change as output buffers get emptied, or if the output flow * control is acted. This is not an exact number because not every * character needs the same space in the sccb. The worst case is - * a string of newlines. Every newlines creates a new mto which - * needs 8 bytes. + * a string of newlines. Every newline creates a new message which + * needs 82 bytes. */ static int sclp_tty_write_room (struct tty_struct *tty) @@ -97,9 +97,9 @@ sclp_tty_write_room (struct tty_struct *tty) spin_lock_irqsave(&sclp_tty_lock, flags); count = 0; if (sclp_ttybuf != NULL) - count = sclp_buffer_space(sclp_ttybuf) / sizeof(struct mto); + count = sclp_buffer_space(sclp_ttybuf) / sizeof(struct msg_buf); list_for_each(l, &sclp_tty_pages) - count += NR_EMPTY_MTO_PER_SCCB; + count += NR_EMPTY_MSG_PER_SCCB; spin_unlock_irqrestore(&sclp_tty_lock, flags); return count; } diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 07fc5d9..b5620e8 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -476,26 +476,6 @@ static int cio_check_devno_blacklisted(struct subchannel *sch) return 0; } -static int cio_validate_io_subchannel(struct subchannel *sch) -{ - /* Initialization for io subchannels. */ - if (!css_sch_is_valid(&sch->schib)) - return -ENODEV; - - /* Devno is valid. */ - return cio_check_devno_blacklisted(sch); -} - -static int cio_validate_msg_subchannel(struct subchannel *sch) -{ - /* Initialization for message subchannels. */ - if (!css_sch_is_valid(&sch->schib)) - return -ENODEV; - - /* Devno is valid. */ - return cio_check_devno_blacklisted(sch); -} - /** * cio_validate_subchannel - basic validation of subchannel * @sch: subchannel structure to be filled out @@ -533,10 +513,11 @@ int cio_validate_subchannel(struct subchannel *sch, struct subchannel_id schid) switch (sch->st) { case SUBCHANNEL_TYPE_IO: - err = cio_validate_io_subchannel(sch); - break; case SUBCHANNEL_TYPE_MSG: - err = cio_validate_msg_subchannel(sch); + if (!css_sch_is_valid(&sch->schib)) + err = -ENODEV; + else + err = cio_check_devno_blacklisted(sch); break; default: err = 0; @@ -826,11 +807,11 @@ static atomic_t chpid_reset_count; static void s390_reset_chpids_mcck_handler(void) { struct crw crw; - struct mci *mci; + union mci mci; /* Check for pending channel report word. */ - mci = (struct mci *)&S390_lowcore.mcck_interruption_code; - if (!mci->cp) + mci.val = S390_lowcore.mcck_interruption_code; + if (!mci.cp) return; /* Process channel report words. */ while (stcrw(&crw) == 0) { diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c index 23054f8..b2afad5 100644 --- a/drivers/s390/cio/cmf.c +++ b/drivers/s390/cio/cmf.c @@ -113,7 +113,6 @@ module_param(format, bint, 0444); * @readall: read a measurement block in a common format * @reset: clear the data in the associated measurement block and * reset its time stamp - * @align: align an allocated block so that the hardware can use it */ struct cmb_operations { int (*alloc) (struct ccw_device *); @@ -122,7 +121,6 @@ struct cmb_operations { u64 (*read) (struct ccw_device *, int); int (*readall)(struct ccw_device *, struct cmbdata *); void (*reset) (struct ccw_device *); - void *(*align) (void *); /* private: */ struct attribute_group *attr_group; }; @@ -186,9 +184,8 @@ static inline void cmf_activate(void *area, unsigned int onoff) static int set_schib(struct ccw_device *cdev, u32 mme, int mbfc, unsigned long address) { - struct subchannel *sch; - - sch = to_subchannel(cdev->dev.parent); + struct subchannel *sch = to_subchannel(cdev->dev.parent); + int ret; sch->config.mme = mme; sch->config.mbfc = mbfc; @@ -198,7 +195,15 @@ static int set_schib(struct ccw_device *cdev, u32 mme, int mbfc, else sch->config.mbi = address; - return cio_commit_config(sch); + ret = cio_commit_config(sch); + if (!mme && ret == -ENODEV) { + /* + * The task was to disable measurement block updates but + * the subchannel is already gone. Report success. + */ + ret = 0; + } + return ret; } struct set_schib_struct { @@ -314,7 +319,7 @@ static int cmf_copy_block(struct ccw_device *cdev) return -EBUSY; } cmb_data = cdev->private->cmb; - hw_block = cmbops->align(cmb_data->hw_block); + hw_block = cmb_data->hw_block; if (!memcmp(cmb_data->last_block, hw_block, cmb_data->size)) /* No need to copy. */ return 0; @@ -425,7 +430,7 @@ static void cmf_generic_reset(struct ccw_device *cdev) * Need to reset hw block as well to make the hardware start * from 0 again. */ - memset(cmbops->align(cmb_data->hw_block), 0, cmb_data->size); + memset(cmb_data->hw_block, 0, cmb_data->size); cmb_data->last_update = 0; } cdev->private->cmb_start_time = get_tod_clock(); @@ -606,12 +611,6 @@ static void free_cmb(struct ccw_device *cdev) spin_lock_irq(cdev->ccwlock); priv = cdev->private; - - if (list_empty(&priv->cmb_list)) { - /* already freed */ - goto out; - } - cmb_data = priv->cmb; priv->cmb = NULL; if (cmb_data) @@ -626,7 +625,6 @@ static void free_cmb(struct ccw_device *cdev) free_pages((unsigned long)cmb_area.mem, get_order(size)); cmb_area.mem = NULL; } -out: spin_unlock_irq(cdev->ccwlock); spin_unlock(&cmb_area.lock); } @@ -755,11 +753,6 @@ static void reset_cmb(struct ccw_device *cdev) cmf_generic_reset(cdev); } -static void * align_cmb(void *area) -{ - return area; -} - static struct attribute_group cmf_attr_group; static struct cmb_operations cmbops_basic = { @@ -769,7 +762,6 @@ static struct cmb_operations cmbops_basic = { .read = read_cmb, .readall = readall_cmb, .reset = reset_cmb, - .align = align_cmb, .attr_group = &cmf_attr_group, }; @@ -804,64 +796,57 @@ struct cmbe { u32 device_busy_time; u32 initial_command_response_time; u32 reserved[7]; -}; +} __packed __aligned(64); -/* - * kmalloc only guarantees 8 byte alignment, but we need cmbe - * pointers to be naturally aligned. Make sure to allocate - * enough space for two cmbes. - */ -static inline struct cmbe *cmbe_align(struct cmbe *c) -{ - unsigned long addr; - addr = ((unsigned long)c + sizeof (struct cmbe) - sizeof(long)) & - ~(sizeof (struct cmbe) - sizeof(long)); - return (struct cmbe*)addr; -} +static struct kmem_cache *cmbe_cache; static int alloc_cmbe(struct ccw_device *cdev) { - struct cmbe *cmbe; struct cmb_data *cmb_data; - int ret; + struct cmbe *cmbe; + int ret = -ENOMEM; - cmbe = kzalloc (sizeof (*cmbe) * 2, GFP_KERNEL); + cmbe = kmem_cache_zalloc(cmbe_cache, GFP_KERNEL); if (!cmbe) - return -ENOMEM; - cmb_data = kzalloc(sizeof(struct cmb_data), GFP_KERNEL); - if (!cmb_data) { - ret = -ENOMEM; + return ret; + + cmb_data = kzalloc(sizeof(*cmb_data), GFP_KERNEL); + if (!cmb_data) goto out_free; - } + cmb_data->last_block = kzalloc(sizeof(struct cmbe), GFP_KERNEL); - if (!cmb_data->last_block) { - ret = -ENOMEM; + if (!cmb_data->last_block) goto out_free; - } - cmb_data->size = sizeof(struct cmbe); - spin_lock_irq(cdev->ccwlock); - if (cdev->private->cmb) { - spin_unlock_irq(cdev->ccwlock); - ret = -EBUSY; - goto out_free; - } + + cmb_data->size = sizeof(*cmbe); cmb_data->hw_block = cmbe; + + spin_lock(&cmb_area.lock); + spin_lock_irq(cdev->ccwlock); + if (cdev->private->cmb) + goto out_unlock; + cdev->private->cmb = cmb_data; - spin_unlock_irq(cdev->ccwlock); /* activate global measurement if this is the first channel */ - spin_lock(&cmb_area.lock); if (list_empty(&cmb_area.list)) cmf_activate(NULL, 1); list_add_tail(&cdev->private->cmb_list, &cmb_area.list); - spin_unlock(&cmb_area.lock); + spin_unlock_irq(cdev->ccwlock); + spin_unlock(&cmb_area.lock); return 0; + +out_unlock: + spin_unlock_irq(cdev->ccwlock); + spin_unlock(&cmb_area.lock); + ret = -EBUSY; out_free: if (cmb_data) kfree(cmb_data->last_block); kfree(cmb_data); - kfree(cmbe); + kmem_cache_free(cmbe_cache, cmbe); + return ret; } @@ -869,19 +854,21 @@ static void free_cmbe(struct ccw_device *cdev) { struct cmb_data *cmb_data; + spin_lock(&cmb_area.lock); spin_lock_irq(cdev->ccwlock); cmb_data = cdev->private->cmb; cdev->private->cmb = NULL; - if (cmb_data) + if (cmb_data) { kfree(cmb_data->last_block); + kmem_cache_free(cmbe_cache, cmb_data->hw_block); + } kfree(cmb_data); - spin_unlock_irq(cdev->ccwlock); /* deactivate global measurement if this is the last channel */ - spin_lock(&cmb_area.lock); list_del_init(&cdev->private->cmb_list); if (list_empty(&cmb_area.list)) cmf_activate(NULL, 0); + spin_unlock_irq(cdev->ccwlock); spin_unlock(&cmb_area.lock); } @@ -897,7 +884,7 @@ static int set_cmbe(struct ccw_device *cdev, u32 mme) return -EINVAL; } cmb_data = cdev->private->cmb; - mba = mme ? (unsigned long) cmbe_align(cmb_data->hw_block) : 0; + mba = mme ? (unsigned long) cmb_data->hw_block : 0; spin_unlock_irqrestore(cdev->ccwlock, flags); return set_schib_wait(cdev, mme, 1, mba); @@ -1022,11 +1009,6 @@ static void reset_cmbe(struct ccw_device *cdev) cmf_generic_reset(cdev); } -static void * align_cmbe(void *area) -{ - return cmbe_align(area); -} - static struct attribute_group cmf_attr_group_ext; static struct cmb_operations cmbops_extended = { @@ -1036,7 +1018,6 @@ static struct cmb_operations cmbops_extended = { .read = read_cmbe, .readall = readall_cmbe, .reset = reset_cmbe, - .align = align_cmbe, .attr_group = &cmf_attr_group_ext, }; @@ -1171,23 +1152,28 @@ static ssize_t cmb_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", to_ccwdev(dev)->private->cmb ? 1 : 0); + struct ccw_device *cdev = to_ccwdev(dev); + int enabled; + + spin_lock_irq(cdev->ccwlock); + enabled = !!cdev->private->cmb; + spin_unlock_irq(cdev->ccwlock); + + return sprintf(buf, "%d\n", enabled); } static ssize_t cmb_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t c) { - struct ccw_device *cdev; - int ret; + struct ccw_device *cdev = to_ccwdev(dev); unsigned long val; + int ret; ret = kstrtoul(buf, 16, &val); if (ret) return ret; - cdev = to_ccwdev(dev); - switch (val) { case 0: ret = disable_cmf(cdev); @@ -1195,12 +1181,13 @@ static ssize_t cmb_enable_store(struct device *dev, case 1: ret = enable_cmf(cdev); break; + default: + ret = -EINVAL; } - return c; + return ret ? ret : c; } - -DEVICE_ATTR(cmb_enable, 0644, cmb_enable_show, cmb_enable_store); +DEVICE_ATTR_RW(cmb_enable); int ccw_set_cmf(struct ccw_device *cdev, int enable) { @@ -1220,41 +1207,71 @@ int enable_cmf(struct ccw_device *cdev) { int ret; + device_lock(&cdev->dev); + get_device(&cdev->dev); ret = cmbops->alloc(cdev); - cmbops->reset(cdev); if (ret) - return ret; + goto out; + cmbops->reset(cdev); + ret = sysfs_create_group(&cdev->dev.kobj, cmbops->attr_group); + if (ret) { + cmbops->free(cdev); + goto out; + } ret = cmbops->set(cdev, 2); if (ret) { + sysfs_remove_group(&cdev->dev.kobj, cmbops->attr_group); cmbops->free(cdev); - return ret; } - ret = sysfs_create_group(&cdev->dev.kobj, cmbops->attr_group); - if (!ret) - return 0; - cmbops->set(cdev, 0); //FIXME: this can fail - cmbops->free(cdev); +out: + if (ret) + put_device(&cdev->dev); + + device_unlock(&cdev->dev); return ret; } /** - * disable_cmf() - switch off the channel measurement for a specific device + * __disable_cmf() - switch off the channel measurement for a specific device * @cdev: The ccw device to be disabled * * Returns %0 for success or a negative error value. * * Context: - * non-atomic + * non-atomic, device_lock() held. */ -int disable_cmf(struct ccw_device *cdev) +int __disable_cmf(struct ccw_device *cdev) { int ret; ret = cmbops->set(cdev, 0); if (ret) return ret; - cmbops->free(cdev); + sysfs_remove_group(&cdev->dev.kobj, cmbops->attr_group); + cmbops->free(cdev); + put_device(&cdev->dev); + + return ret; +} + +/** + * disable_cmf() - switch off the channel measurement for a specific device + * @cdev: The ccw device to be disabled + * + * Returns %0 for success or a negative error value. + * + * Context: + * non-atomic + */ +int disable_cmf(struct ccw_device *cdev) +{ + int ret; + + device_lock(&cdev->dev); + ret = __disable_cmf(cdev); + device_unlock(&cdev->dev); + return ret; } @@ -1295,10 +1312,32 @@ int cmf_reenable(struct ccw_device *cdev) return cmbops->set(cdev, 2); } +/** + * cmf_reactivate() - reactivate measurement block updates + * + * Use this during resume from hibernate. + */ +void cmf_reactivate(void) +{ + spin_lock(&cmb_area.lock); + if (!list_empty(&cmb_area.list)) + cmf_activate(cmb_area.mem, 1); + spin_unlock(&cmb_area.lock); +} + +static int __init init_cmbe(void) +{ + cmbe_cache = kmem_cache_create("cmbe_cache", sizeof(struct cmbe), + __alignof__(struct cmbe), 0, NULL); + + return cmbe_cache ? 0 : -ENOMEM; +} + static int __init init_cmf(void) { char *format_string; - char *detect_string = "parameter"; + char *detect_string; + int ret; /* * If the user did not give a parameter, see if we are running on a @@ -1324,15 +1363,18 @@ static int __init init_cmf(void) case CMF_EXTENDED: format_string = "extended"; cmbops = &cmbops_extended; + + ret = init_cmbe(); + if (ret) + return ret; break; default: - return 1; + return -EINVAL; } pr_info("Channel measurement facility initialized using format " "%s (mode %s)\n", format_string, detect_string); return 0; } - module_init(init_cmf); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 0268e5f..2ee3053 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -44,7 +44,6 @@ for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *data) int ret; init_subchannel_id(&schid); - ret = -ENODEV; do { do { ret = fn(schid, data); @@ -1089,6 +1088,7 @@ void channel_subsystem_reinit(void) if (chp) chp_update_desc(chp); } + cmf_reactivate(); } #ifdef CONFIG_PROC_FS diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index dfef5e6..6aae684 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1787,6 +1787,8 @@ static int ccw_device_remove(struct device *dev) cdev->drv = NULL; cdev->private->int_class = IRQIO_CIO; spin_unlock_irq(cdev->ccwlock); + __disable_cmf(cdev); + return 0; } @@ -1797,7 +1799,7 @@ static void ccw_device_shutdown(struct device *dev) cdev = to_ccwdev(dev); if (cdev->drv && cdev->drv->shutdown) cdev->drv->shutdown(cdev); - disable_cmf(cdev); + __disable_cmf(cdev); } static int ccw_device_pm_prepare(struct device *dev) diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index 8d1d298..065b1be 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -125,11 +125,6 @@ void ccw_device_verify_done(struct ccw_device *, int); void ccw_device_disband_start(struct ccw_device *); void ccw_device_disband_done(struct ccw_device *, int); -void ccw_device_stlck_start(struct ccw_device *, void *, void *, void *); -void ccw_device_stlck_done(struct ccw_device *, void *, int); - -int ccw_device_call_handler(struct ccw_device *); - int ccw_device_stlck(struct ccw_device *); /* Helper function for machine check handling. */ @@ -145,6 +140,7 @@ void ccw_device_set_timeout(struct ccw_device *, int); void retry_set_schib(struct ccw_device *cdev); void cmf_retry_copy_block(struct ccw_device *); int cmf_reenable(struct ccw_device *); +void cmf_reactivate(void); int ccw_set_cmf(struct ccw_device *cdev, int enable); extern struct device_attribute dev_attr_cmb_enable; #endif diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 83da53c8..92e03b4 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -731,6 +731,44 @@ static void ccw_device_boxed_verify(struct ccw_device *cdev, } /* + * Pass interrupt to device driver. + */ +static int ccw_device_call_handler(struct ccw_device *cdev) +{ + unsigned int stctl; + int ending_status; + + /* + * we allow for the device action handler if . + * - we received ending status + * - the action handler requested to see all interrupts + * - we received an intermediate status + * - fast notification was requested (primary status) + * - unsolicited interrupts + */ + stctl = scsw_stctl(&cdev->private->irb.scsw); + ending_status = (stctl & SCSW_STCTL_SEC_STATUS) || + (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) || + (stctl == SCSW_STCTL_STATUS_PEND); + if (!ending_status && + !cdev->private->options.repall && + !(stctl & SCSW_STCTL_INTER_STATUS) && + !(cdev->private->options.fast && + (stctl & SCSW_STCTL_PRIM_STATUS))) + return 0; + + if (ending_status) + ccw_device_set_timeout(cdev, 0); + + if (cdev->handler) + cdev->handler(cdev, cdev->private->intparm, + &cdev->private->irb); + + memset(&cdev->private->irb, 0, sizeof(struct irb)); + return 1; +} + +/* * Got an interrupt for a normal io (state online). */ static void diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index 6acd0b5..a69f702 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -412,52 +412,6 @@ int ccw_device_resume(struct ccw_device *cdev) return cio_resume(sch); } -/* - * Pass interrupt to device driver. - */ -int -ccw_device_call_handler(struct ccw_device *cdev) -{ - unsigned int stctl; - int ending_status; - - /* - * we allow for the device action handler if . - * - we received ending status - * - the action handler requested to see all interrupts - * - we received an intermediate status - * - fast notification was requested (primary status) - * - unsolicited interrupts - */ - stctl = scsw_stctl(&cdev->private->irb.scsw); - ending_status = (stctl & SCSW_STCTL_SEC_STATUS) || - (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) || - (stctl == SCSW_STCTL_STATUS_PEND); - if (!ending_status && - !cdev->private->options.repall && - !(stctl & SCSW_STCTL_INTER_STATUS) && - !(cdev->private->options.fast && - (stctl & SCSW_STCTL_PRIM_STATUS))) - return 0; - - /* Clear pending timers for device driver initiated I/O. */ - if (ending_status) - ccw_device_set_timeout(cdev, 0); - /* - * Now we are ready to call the device driver interrupt handler. - */ - if (cdev->handler) - cdev->handler(cdev, cdev->private->intparm, - &cdev->private->irb); - - /* - * Clear the old and now useless interrupt response block. - */ - memset(&cdev->private->irb, 0, sizeof(struct irb)); - - return 1; -} - /** * ccw_device_get_ciw() - Search for CIW command in extended sense data. * @cdev: ccw device to inspect @@ -502,67 +456,6 @@ __u8 ccw_device_get_path_mask(struct ccw_device *cdev) return sch->lpm; } -struct stlck_data { - struct completion done; - int rc; -}; - -void ccw_device_stlck_done(struct ccw_device *cdev, void *data, int rc) -{ - struct stlck_data *sdata = data; - - sdata->rc = rc; - complete(&sdata->done); -} - -/* - * Perform unconditional reserve + release. - */ -int ccw_device_stlck(struct ccw_device *cdev) -{ - struct subchannel *sch = to_subchannel(cdev->dev.parent); - struct stlck_data data; - u8 *buffer; - int rc; - - /* Check if steal lock operation is valid for this device. */ - if (cdev->drv) { - if (!cdev->private->options.force) - return -EINVAL; - } - buffer = kzalloc(64, GFP_DMA | GFP_KERNEL); - if (!buffer) - return -ENOMEM; - init_completion(&data.done); - data.rc = -EIO; - spin_lock_irq(sch->lock); - rc = cio_enable_subchannel(sch, (u32) (addr_t) sch); - if (rc) - goto out_unlock; - /* Perform operation. */ - cdev->private->state = DEV_STATE_STEAL_LOCK; - ccw_device_stlck_start(cdev, &data, &buffer[0], &buffer[32]); - spin_unlock_irq(sch->lock); - /* Wait for operation to finish. */ - if (wait_for_completion_interruptible(&data.done)) { - /* Got a signal. */ - spin_lock_irq(sch->lock); - ccw_request_cancel(cdev); - spin_unlock_irq(sch->lock); - wait_for_completion(&data.done); - } - rc = data.rc; - /* Check results. */ - spin_lock_irq(sch->lock); - cio_disable_subchannel(sch); - cdev->private->state = DEV_STATE_BOXED; -out_unlock: - spin_unlock_irq(sch->lock); - kfree(buffer); - - return rc; -} - /** * chp_get_chp_desc - return newly allocated channel-path descriptor * @cdev: device to obtain the descriptor for diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c index 37ada05e..da246b6 100644 --- a/drivers/s390/cio/device_pgid.c +++ b/drivers/s390/cio/device_pgid.c @@ -9,9 +9,10 @@ #include <linux/kernel.h> #include <linux/string.h> +#include <linux/bitops.h> #include <linux/types.h> #include <linux/errno.h> -#include <linux/bitops.h> +#include <linux/slab.h> #include <asm/ccwdev.h> #include <asm/cio.h> @@ -133,7 +134,7 @@ static void spid_build_cp(struct ccw_device *cdev, u8 fn) { struct ccw_request *req = &cdev->private->req; struct ccw1 *cp = cdev->private->iccws; - int i = 8 - ffs(req->lpm); + int i = pathmask_to_pos(req->lpm); struct pgid *pgid = &cdev->private->pgid[i]; pgid->inf.fc = fn; @@ -434,7 +435,7 @@ static void snid_build_cp(struct ccw_device *cdev) { struct ccw_request *req = &cdev->private->req; struct ccw1 *cp = cdev->private->iccws; - int i = 8 - ffs(req->lpm); + int i = pathmask_to_pos(req->lpm); /* Channel program setup. */ cp->cmd_code = CCW_CMD_SENSE_PGID; @@ -616,6 +617,11 @@ void ccw_device_disband_start(struct ccw_device *cdev) ccw_request_start(cdev); } +struct stlck_data { + struct completion done; + int rc; +}; + static void stlck_build_cp(struct ccw_device *cdev, void *buf1, void *buf2) { struct ccw_request *req = &cdev->private->req; @@ -634,7 +640,10 @@ static void stlck_build_cp(struct ccw_device *cdev, void *buf1, void *buf2) static void stlck_callback(struct ccw_device *cdev, void *data, int rc) { - ccw_device_stlck_done(cdev, data, rc); + struct stlck_data *sdata = data; + + sdata->rc = rc; + complete(&sdata->done); } /** @@ -645,11 +654,9 @@ static void stlck_callback(struct ccw_device *cdev, void *data, int rc) * @buf2: data pointer used in channel program * * Execute a channel program on @cdev to release an existing PGID reservation. - * When finished, call ccw_device_stlck_done with a return code specifying the - * result. */ -void ccw_device_stlck_start(struct ccw_device *cdev, void *data, void *buf1, - void *buf2) +static void ccw_device_stlck_start(struct ccw_device *cdev, void *data, + void *buf1, void *buf2) { struct subchannel *sch = to_subchannel(cdev->dev.parent); struct ccw_request *req = &cdev->private->req; @@ -667,3 +674,50 @@ void ccw_device_stlck_start(struct ccw_device *cdev, void *data, void *buf1, ccw_request_start(cdev); } +/* + * Perform unconditional reserve + release. + */ +int ccw_device_stlck(struct ccw_device *cdev) +{ + struct subchannel *sch = to_subchannel(cdev->dev.parent); + struct stlck_data data; + u8 *buffer; + int rc; + + /* Check if steal lock operation is valid for this device. */ + if (cdev->drv) { + if (!cdev->private->options.force) + return -EINVAL; + } + buffer = kzalloc(64, GFP_DMA | GFP_KERNEL); + if (!buffer) + return -ENOMEM; + init_completion(&data.done); + data.rc = -EIO; + spin_lock_irq(sch->lock); + rc = cio_enable_subchannel(sch, (u32) (addr_t) sch); + if (rc) + goto out_unlock; + /* Perform operation. */ + cdev->private->state = DEV_STATE_STEAL_LOCK; + ccw_device_stlck_start(cdev, &data, &buffer[0], &buffer[32]); + spin_unlock_irq(sch->lock); + /* Wait for operation to finish. */ + if (wait_for_completion_interruptible(&data.done)) { + /* Got a signal. */ + spin_lock_irq(sch->lock); + ccw_request_cancel(cdev); + spin_unlock_irq(sch->lock); + wait_for_completion(&data.done); + } + rc = data.rc; + /* Check results. */ + spin_lock_irq(sch->lock); + cio_disable_subchannel(sch); + cdev->private->state = DEV_STATE_BOXED; +out_unlock: + spin_unlock_irq(sch->lock); + kfree(buffer); + + return rc; +} diff --git a/drivers/s390/crypto/Makefile b/drivers/s390/crypto/Makefile index 771faf7..57f710b 100644 --- a/drivers/s390/crypto/Makefile +++ b/drivers/s390/crypto/Makefile @@ -3,6 +3,6 @@ # ap-objs := ap_bus.o -obj-$(CONFIG_ZCRYPT) += ap.o zcrypt_api.o zcrypt_pcicc.o zcrypt_pcixcc.o -obj-$(CONFIG_ZCRYPT) += zcrypt_pcica.o zcrypt_cex2a.o zcrypt_cex4.o +obj-$(CONFIG_ZCRYPT) += ap.o zcrypt_api.o zcrypt_pcixcc.o +obj-$(CONFIG_ZCRYPT) += zcrypt_cex2a.o zcrypt_cex4.o obj-$(CONFIG_ZCRYPT) += zcrypt_msgtype6.o zcrypt_msgtype50.o diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index d78b3d6..9cb3dfb 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -37,6 +37,7 @@ #include <linux/notifier.h> #include <linux/kthread.h> #include <linux/mutex.h> +#include <linux/suspend.h> #include <asm/reset.h> #include <asm/airq.h> #include <linux/atomic.h> @@ -48,23 +49,6 @@ #include "ap_bus.h" -/* Some prototypes. */ -static void ap_scan_bus(struct work_struct *); -static void ap_poll_all(unsigned long); -static enum hrtimer_restart ap_poll_timeout(struct hrtimer *); -static int ap_poll_thread_start(void); -static void ap_poll_thread_stop(void); -static void ap_request_timeout(unsigned long); -static inline void ap_schedule_poll_timer(void); -static int __ap_poll_device(struct ap_device *ap_dev, unsigned long *flags); -static int ap_device_remove(struct device *dev); -static int ap_device_probe(struct device *dev); -static void ap_interrupt_handler(struct airq_struct *airq); -static void ap_reset(struct ap_device *ap_dev, unsigned long *flags); -static void ap_config_timeout(unsigned long ptr); -static int ap_select_domain(void); -static void ap_query_configuration(void); - /* * Module description. */ @@ -92,17 +76,18 @@ static DEFINE_SPINLOCK(ap_device_list_lock); static LIST_HEAD(ap_device_list); /* - * Workqueue & timer for bus rescan. + * Workqueue timer for bus rescan. */ -static struct workqueue_struct *ap_work_queue; static struct timer_list ap_config_timer; static int ap_config_time = AP_CONFIG_TIME; -static DECLARE_WORK(ap_config_work, ap_scan_bus); +static void ap_scan_bus(struct work_struct *); +static DECLARE_WORK(ap_scan_work, ap_scan_bus); /* * Tasklet & timer for AP request polling and interrupts */ -static DECLARE_TASKLET(ap_tasklet, ap_poll_all, 0); +static void ap_tasklet_fn(unsigned long); +static DECLARE_TASKLET(ap_tasklet, ap_tasklet_fn, 0); static atomic_t ap_poll_requests = ATOMIC_INIT(0); static DECLARE_WAIT_QUEUE_HEAD(ap_poll_wait); static struct task_struct *ap_poll_kthread = NULL; @@ -115,6 +100,8 @@ static unsigned long long poll_timeout = 250000; /* Suspend flag */ static int ap_suspend_flag; +/* Maximum domain id */ +static int ap_max_domain_id; /* Flag to check if domain was set through module parameter domain=. This is * important when supsend and resume is done in a z/VM environment where the * domain might change. */ @@ -122,6 +109,8 @@ static int user_set_domain = 0; static struct bus_type ap_bus_type; /* Adapter interrupt definitions */ +static void ap_interrupt_handler(struct airq_struct *airq); + static int ap_airq_flag; static struct airq_struct ap_airq = { @@ -182,44 +171,27 @@ static int ap_configuration_available(void) /** * ap_test_queue(): Test adjunct processor queue. * @qid: The AP queue number - * @queue_depth: Pointer to queue depth value - * @device_type: Pointer to device type value + * @info: Pointer to queue descriptor * * Returns AP queue status structure. */ static inline struct ap_queue_status -ap_test_queue(ap_qid_t qid, int *queue_depth, int *device_type) +ap_test_queue(ap_qid_t qid, unsigned long *info) { register unsigned long reg0 asm ("0") = qid; register struct ap_queue_status reg1 asm ("1"); register unsigned long reg2 asm ("2") = 0UL; + if (test_facility(15)) + reg0 |= 1UL << 23; /* set APFT T bit*/ asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */ : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc"); - *device_type = (int) (reg2 >> 24); - *queue_depth = (int) (reg2 & 0xff); + if (info) + *info = reg2; return reg1; } /** - * ap_query_facilities(): PQAP(TAPQ) query facilities. - * @qid: The AP queue number - * - * Returns content of general register 2 after the PQAP(TAPQ) - * instruction was called. - */ -static inline unsigned long ap_query_facilities(ap_qid_t qid) -{ - register unsigned long reg0 asm ("0") = qid | 0x00800000UL; - register unsigned long reg1 asm ("1"); - register unsigned long reg2 asm ("2") = 0UL; - - asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */ - : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc"); - return reg2; -} - -/** * ap_reset_queue(): Reset adjunct processor queue. * @qid: The AP queue number * @@ -259,31 +231,19 @@ ap_queue_interruption_control(ap_qid_t qid, void *ind) return reg1_out; } -static inline struct ap_queue_status -__ap_query_functions(ap_qid_t qid, unsigned int *functions) -{ - register unsigned long reg0 asm ("0") = 0UL | qid | (1UL << 23); - register struct ap_queue_status reg1 asm ("1") = AP_QUEUE_STATUS_INVALID; - register unsigned long reg2 asm ("2"); - - asm volatile( - ".long 0xb2af0000\n" /* PQAP(TAPQ) */ - "0:\n" - EX_TABLE(0b, 0b) - : "+d" (reg0), "+d" (reg1), "=d" (reg2) - : - : "cc"); - - *functions = (unsigned int)(reg2 >> 32); - return reg1; -} - -static inline int __ap_query_configuration(struct ap_config_info *config) +/** + * ap_query_configuration(): Get AP configuration data + * + * Returns 0 on success, or -EOPNOTSUPP. + */ +static inline int ap_query_configuration(void) { register unsigned long reg0 asm ("0") = 0x04000000UL; register unsigned long reg1 asm ("1") = -EINVAL; - register unsigned char *reg2 asm ("2") = (unsigned char *)config; + register void *reg2 asm ("2") = (void *) ap_configuration; + if (!ap_configuration) + return -EOPNOTSUPP; asm volatile( ".long 0xb2af0000\n" /* PQAP(QCI) */ "0: la %1,0\n" @@ -297,39 +257,60 @@ static inline int __ap_query_configuration(struct ap_config_info *config) } /** - * ap_query_functions(): Query supported functions. - * @qid: The AP queue number - * @functions: Pointer to functions field. - * - * Returns - * 0 on success. - * -ENODEV if queue not valid. - * -EBUSY if device busy. - * -EINVAL if query function is not supported + * ap_init_configuration(): Allocate and query configuration array. */ -static int ap_query_functions(ap_qid_t qid, unsigned int *functions) +static void ap_init_configuration(void) { - struct ap_queue_status status; + if (!ap_configuration_available()) + return; - status = __ap_query_functions(qid, functions); + ap_configuration = kzalloc(sizeof(*ap_configuration), GFP_KERNEL); + if (!ap_configuration) + return; + if (ap_query_configuration() != 0) { + kfree(ap_configuration); + ap_configuration = NULL; + return; + } +} - if (ap_queue_status_invalid_test(&status)) - return -ENODEV; +/* + * ap_test_config(): helper function to extract the nrth bit + * within the unsigned int array field. + */ +static inline int ap_test_config(unsigned int *field, unsigned int nr) +{ + return ap_test_bit((field + (nr >> 5)), (nr & 0x1f)); +} - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - return 0; - case AP_RESPONSE_Q_NOT_AVAIL: - case AP_RESPONSE_DECONFIGURED: - case AP_RESPONSE_CHECKSTOPPED: - case AP_RESPONSE_INVALID_ADDRESS: - return -ENODEV; - case AP_RESPONSE_RESET_IN_PROGRESS: - case AP_RESPONSE_BUSY: - case AP_RESPONSE_OTHERWISE_CHANGED: - default: - return -EBUSY; - } +/* + * ap_test_config_card_id(): Test, whether an AP card ID is configured. + * @id AP card ID + * + * Returns 0 if the card is not configured + * 1 if the card is configured or + * if the configuration information is not available + */ +static inline int ap_test_config_card_id(unsigned int id) +{ + if (!ap_configuration) /* QCI not supported */ + return 1; + return ap_test_config(ap_configuration->apm, id); +} + +/* + * ap_test_config_domain(): Test, whether an AP usage domain is configured. + * @domain AP usage domain ID + * + * Returns 0 if the usage domain is not configured + * 1 if the usage domain is configured or + * if the configuration information is not available + */ +static inline int ap_test_config_domain(unsigned int domain) +{ + if (!ap_configuration) /* QCI not supported */ + return domain < 16; + return ap_test_config(ap_configuration->aqm, domain); } /** @@ -354,7 +335,9 @@ static int ap_queue_enable_interruption(struct ap_device *ap_dev, void *ind) case AP_RESPONSE_DECONFIGURED: case AP_RESPONSE_CHECKSTOPPED: case AP_RESPONSE_INVALID_ADDRESS: - return -ENODEV; + pr_err("Registering adapter interrupts for AP %d failed\n", + AP_QID_DEVICE(ap_dev->qid)); + return -EOPNOTSUPP; case AP_RESPONSE_RESET_IN_PROGRESS: case AP_RESPONSE_BUSY: default: @@ -480,136 +463,559 @@ int ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length) EXPORT_SYMBOL(ap_recv); /** - * __ap_schedule_poll_timer(): Schedule poll timer. - * - * Set up the timer to run the poll tasklet + * ap_query_queue(): Check if an AP queue is available. + * @qid: The AP queue number + * @queue_depth: Pointer to queue depth value + * @device_type: Pointer to device type value + * @facilities: Pointer to facility indicator */ -static inline void __ap_schedule_poll_timer(void) +static int ap_query_queue(ap_qid_t qid, int *queue_depth, int *device_type, + unsigned int *facilities) +{ + struct ap_queue_status status; + unsigned long info; + int nd; + + if (!ap_test_config_card_id(AP_QID_DEVICE(qid))) + return -ENODEV; + + status = ap_test_queue(qid, &info); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + *queue_depth = (int)(info & 0xff); + *device_type = (int)((info >> 24) & 0xff); + *facilities = (unsigned int)(info >> 32); + /* Update maximum domain id */ + nd = (info >> 16) & 0xff; + if ((info & (1UL << 57)) && nd > 0) + ap_max_domain_id = nd; + return 0; + case AP_RESPONSE_Q_NOT_AVAIL: + case AP_RESPONSE_DECONFIGURED: + case AP_RESPONSE_CHECKSTOPPED: + case AP_RESPONSE_INVALID_ADDRESS: + return -ENODEV; + case AP_RESPONSE_RESET_IN_PROGRESS: + case AP_RESPONSE_OTHERWISE_CHANGED: + case AP_RESPONSE_BUSY: + return -EBUSY; + default: + BUG(); + } +} + +/* State machine definitions and helpers */ + +static void ap_sm_wait(enum ap_wait wait) { ktime_t hr_time; - spin_lock_bh(&ap_poll_timer_lock); - if (!hrtimer_is_queued(&ap_poll_timer) && !ap_suspend_flag) { - hr_time = ktime_set(0, poll_timeout); - hrtimer_forward_now(&ap_poll_timer, hr_time); - hrtimer_restart(&ap_poll_timer); + switch (wait) { + case AP_WAIT_AGAIN: + case AP_WAIT_INTERRUPT: + if (ap_using_interrupts()) + break; + if (ap_poll_kthread) { + wake_up(&ap_poll_wait); + break; + } + /* Fall through */ + case AP_WAIT_TIMEOUT: + spin_lock_bh(&ap_poll_timer_lock); + if (!hrtimer_is_queued(&ap_poll_timer)) { + hr_time = ktime_set(0, poll_timeout); + hrtimer_forward_now(&ap_poll_timer, hr_time); + hrtimer_restart(&ap_poll_timer); + } + spin_unlock_bh(&ap_poll_timer_lock); + break; + case AP_WAIT_NONE: + default: + break; } - spin_unlock_bh(&ap_poll_timer_lock); +} + +static enum ap_wait ap_sm_nop(struct ap_device *ap_dev) +{ + return AP_WAIT_NONE; } /** - * ap_schedule_poll_timer(): Schedule poll timer. + * ap_sm_recv(): Receive pending reply messages from an AP device but do + * not change the state of the device. + * @ap_dev: pointer to the AP device * - * Set up the timer to run the poll tasklet + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT */ -static inline void ap_schedule_poll_timer(void) +static struct ap_queue_status ap_sm_recv(struct ap_device *ap_dev) { - if (ap_using_interrupts()) - return; - __ap_schedule_poll_timer(); + struct ap_queue_status status; + struct ap_message *ap_msg; + + status = __ap_recv(ap_dev->qid, &ap_dev->reply->psmid, + ap_dev->reply->message, ap_dev->reply->length); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + atomic_dec(&ap_poll_requests); + ap_dev->queue_count--; + if (ap_dev->queue_count > 0) + mod_timer(&ap_dev->timeout, + jiffies + ap_dev->drv->request_timeout); + list_for_each_entry(ap_msg, &ap_dev->pendingq, list) { + if (ap_msg->psmid != ap_dev->reply->psmid) + continue; + list_del_init(&ap_msg->list); + ap_dev->pendingq_count--; + ap_msg->receive(ap_dev, ap_msg, ap_dev->reply); + break; + } + case AP_RESPONSE_NO_PENDING_REPLY: + if (!status.queue_empty || ap_dev->queue_count <= 0) + break; + /* The card shouldn't forget requests but who knows. */ + atomic_sub(ap_dev->queue_count, &ap_poll_requests); + ap_dev->queue_count = 0; + list_splice_init(&ap_dev->pendingq, &ap_dev->requestq); + ap_dev->requestq_count += ap_dev->pendingq_count; + ap_dev->pendingq_count = 0; + break; + default: + break; + } + return status; } +/** + * ap_sm_read(): Receive pending reply messages from an AP device. + * @ap_dev: pointer to the AP device + * + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT + */ +static enum ap_wait ap_sm_read(struct ap_device *ap_dev) +{ + struct ap_queue_status status; + + status = ap_sm_recv(ap_dev); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + if (ap_dev->queue_count > 0) + return AP_WAIT_AGAIN; + ap_dev->state = AP_STATE_IDLE; + return AP_WAIT_NONE; + case AP_RESPONSE_NO_PENDING_REPLY: + if (ap_dev->queue_count > 0) + return AP_WAIT_INTERRUPT; + ap_dev->state = AP_STATE_IDLE; + return AP_WAIT_NONE; + default: + ap_dev->state = AP_STATE_BORKED; + return AP_WAIT_NONE; + } +} /** - * ap_query_queue(): Check if an AP queue is available. - * @qid: The AP queue number - * @queue_depth: Pointer to queue depth value - * @device_type: Pointer to device type value + * ap_sm_write(): Send messages from the request queue to an AP device. + * @ap_dev: pointer to the AP device + * + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT */ -static int ap_query_queue(ap_qid_t qid, int *queue_depth, int *device_type) +static enum ap_wait ap_sm_write(struct ap_device *ap_dev) { struct ap_queue_status status; - int t_depth, t_device_type; + struct ap_message *ap_msg; - status = ap_test_queue(qid, &t_depth, &t_device_type); + if (ap_dev->requestq_count <= 0) + return AP_WAIT_NONE; + /* Start the next request on the queue. */ + ap_msg = list_entry(ap_dev->requestq.next, struct ap_message, list); + status = __ap_send(ap_dev->qid, ap_msg->psmid, + ap_msg->message, ap_msg->length, ap_msg->special); switch (status.response_code) { case AP_RESPONSE_NORMAL: - *queue_depth = t_depth + 1; - *device_type = t_device_type; - return 0; - case AP_RESPONSE_Q_NOT_AVAIL: - case AP_RESPONSE_DECONFIGURED: - case AP_RESPONSE_CHECKSTOPPED: - case AP_RESPONSE_INVALID_ADDRESS: - return -ENODEV; + atomic_inc(&ap_poll_requests); + ap_dev->queue_count++; + if (ap_dev->queue_count == 1) + mod_timer(&ap_dev->timeout, + jiffies + ap_dev->drv->request_timeout); + list_move_tail(&ap_msg->list, &ap_dev->pendingq); + ap_dev->requestq_count--; + ap_dev->pendingq_count++; + if (ap_dev->queue_count < ap_dev->queue_depth) { + ap_dev->state = AP_STATE_WORKING; + return AP_WAIT_AGAIN; + } + /* fall through */ + case AP_RESPONSE_Q_FULL: + ap_dev->state = AP_STATE_QUEUE_FULL; + return AP_WAIT_INTERRUPT; case AP_RESPONSE_RESET_IN_PROGRESS: - case AP_RESPONSE_OTHERWISE_CHANGED: - case AP_RESPONSE_BUSY: - return -EBUSY; + ap_dev->state = AP_STATE_RESET_WAIT; + return AP_WAIT_TIMEOUT; + case AP_RESPONSE_MESSAGE_TOO_BIG: + case AP_RESPONSE_REQ_FAC_NOT_INST: + list_del_init(&ap_msg->list); + ap_dev->requestq_count--; + ap_msg->rc = -EINVAL; + ap_msg->receive(ap_dev, ap_msg, NULL); + return AP_WAIT_AGAIN; default: - BUG(); + ap_dev->state = AP_STATE_BORKED; + return AP_WAIT_NONE; } } /** - * ap_init_queue(): Reset an AP queue. + * ap_sm_read_write(): Send and receive messages to/from an AP device. + * @ap_dev: pointer to the AP device + * + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT + */ +static enum ap_wait ap_sm_read_write(struct ap_device *ap_dev) +{ + return min(ap_sm_read(ap_dev), ap_sm_write(ap_dev)); +} + +/** + * ap_sm_reset(): Reset an AP queue. * @qid: The AP queue number * * Submit the Reset command to an AP queue. - * Since the reset is asynchron set the state to 'RESET_IN_PROGRESS' - * and check later via ap_poll_queue() if the reset is done. */ -static int ap_init_queue(struct ap_device *ap_dev) +static enum ap_wait ap_sm_reset(struct ap_device *ap_dev) { struct ap_queue_status status; status = ap_reset_queue(ap_dev->qid); switch (status.response_code) { case AP_RESPONSE_NORMAL: - ap_dev->interrupt = AP_INTR_DISABLED; - ap_dev->reset = AP_RESET_IN_PROGRESS; - return 0; case AP_RESPONSE_RESET_IN_PROGRESS: + ap_dev->state = AP_STATE_RESET_WAIT; + ap_dev->interrupt = AP_INTR_DISABLED; + return AP_WAIT_TIMEOUT; case AP_RESPONSE_BUSY: - return -EBUSY; + return AP_WAIT_TIMEOUT; case AP_RESPONSE_Q_NOT_AVAIL: case AP_RESPONSE_DECONFIGURED: case AP_RESPONSE_CHECKSTOPPED: default: - return -ENODEV; + ap_dev->state = AP_STATE_BORKED; + return AP_WAIT_NONE; } } /** - * ap_increase_queue_count(): Arm request timeout. - * @ap_dev: Pointer to an AP device. + * ap_sm_reset_wait(): Test queue for completion of the reset operation + * @ap_dev: pointer to the AP device * - * Arm request timeout if an AP device was idle and a new request is submitted. + * Returns AP_POLL_IMMEDIATELY, AP_POLL_AFTER_TIMEROUT or 0. */ -static void ap_increase_queue_count(struct ap_device *ap_dev) +static enum ap_wait ap_sm_reset_wait(struct ap_device *ap_dev) { - int timeout = ap_dev->drv->request_timeout; + struct ap_queue_status status; + unsigned long info; - ap_dev->queue_count++; - if (ap_dev->queue_count == 1) { - mod_timer(&ap_dev->timeout, jiffies + timeout); - ap_dev->reset = AP_RESET_ARMED; + if (ap_dev->queue_count > 0) + /* Try to read a completed message and get the status */ + status = ap_sm_recv(ap_dev); + else + /* Get the status with TAPQ */ + status = ap_test_queue(ap_dev->qid, &info); + + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + if (ap_using_interrupts() && + ap_queue_enable_interruption(ap_dev, + ap_airq.lsi_ptr) == 0) + ap_dev->state = AP_STATE_SETIRQ_WAIT; + else + ap_dev->state = (ap_dev->queue_count > 0) ? + AP_STATE_WORKING : AP_STATE_IDLE; + return AP_WAIT_AGAIN; + case AP_RESPONSE_BUSY: + case AP_RESPONSE_RESET_IN_PROGRESS: + return AP_WAIT_TIMEOUT; + case AP_RESPONSE_Q_NOT_AVAIL: + case AP_RESPONSE_DECONFIGURED: + case AP_RESPONSE_CHECKSTOPPED: + default: + ap_dev->state = AP_STATE_BORKED; + return AP_WAIT_NONE; } } /** - * ap_decrease_queue_count(): Decrease queue count. - * @ap_dev: Pointer to an AP device. + * ap_sm_setirq_wait(): Test queue for completion of the irq enablement + * @ap_dev: pointer to the AP device * - * If AP device is still alive, re-schedule request timeout if there are still - * pending requests. + * Returns AP_POLL_IMMEDIATELY, AP_POLL_AFTER_TIMEROUT or 0. */ -static void ap_decrease_queue_count(struct ap_device *ap_dev) +static enum ap_wait ap_sm_setirq_wait(struct ap_device *ap_dev) { - int timeout = ap_dev->drv->request_timeout; + struct ap_queue_status status; + unsigned long info; - ap_dev->queue_count--; if (ap_dev->queue_count > 0) - mod_timer(&ap_dev->timeout, jiffies + timeout); + /* Try to read a completed message and get the status */ + status = ap_sm_recv(ap_dev); else - /* - * The timeout timer should to be disabled now - since - * del_timer_sync() is very expensive, we just tell via the - * reset flag to ignore the pending timeout timer. - */ - ap_dev->reset = AP_RESET_IGNORE; + /* Get the status with TAPQ */ + status = ap_test_queue(ap_dev->qid, &info); + + if (status.int_enabled == 1) { + /* Irqs are now enabled */ + ap_dev->interrupt = AP_INTR_ENABLED; + ap_dev->state = (ap_dev->queue_count > 0) ? + AP_STATE_WORKING : AP_STATE_IDLE; + } + + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + if (ap_dev->queue_count > 0) + return AP_WAIT_AGAIN; + /* fallthrough */ + case AP_RESPONSE_NO_PENDING_REPLY: + return AP_WAIT_TIMEOUT; + default: + ap_dev->state = AP_STATE_BORKED; + return AP_WAIT_NONE; + } +} + +/* + * AP state machine jump table + */ +ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = { + [AP_STATE_RESET_START] = { + [AP_EVENT_POLL] = ap_sm_reset, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_RESET_WAIT] = { + [AP_EVENT_POLL] = ap_sm_reset_wait, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_SETIRQ_WAIT] = { + [AP_EVENT_POLL] = ap_sm_setirq_wait, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_IDLE] = { + [AP_EVENT_POLL] = ap_sm_write, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_WORKING] = { + [AP_EVENT_POLL] = ap_sm_read_write, + [AP_EVENT_TIMEOUT] = ap_sm_reset, + }, + [AP_STATE_QUEUE_FULL] = { + [AP_EVENT_POLL] = ap_sm_read, + [AP_EVENT_TIMEOUT] = ap_sm_reset, + }, + [AP_STATE_SUSPEND_WAIT] = { + [AP_EVENT_POLL] = ap_sm_read, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_BORKED] = { + [AP_EVENT_POLL] = ap_sm_nop, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, +}; + +static inline enum ap_wait ap_sm_event(struct ap_device *ap_dev, + enum ap_event event) +{ + return ap_jumptable[ap_dev->state][event](ap_dev); +} + +static inline enum ap_wait ap_sm_event_loop(struct ap_device *ap_dev, + enum ap_event event) +{ + enum ap_wait wait; + + while ((wait = ap_sm_event(ap_dev, event)) == AP_WAIT_AGAIN) + ; + return wait; +} + +/** + * ap_request_timeout(): Handling of request timeouts + * @data: Holds the AP device. + * + * Handles request timeouts. + */ +static void ap_request_timeout(unsigned long data) +{ + struct ap_device *ap_dev = (struct ap_device *) data; + + if (ap_suspend_flag) + return; + spin_lock_bh(&ap_dev->lock); + ap_sm_wait(ap_sm_event(ap_dev, AP_EVENT_TIMEOUT)); + spin_unlock_bh(&ap_dev->lock); +} + +/** + * ap_poll_timeout(): AP receive polling for finished AP requests. + * @unused: Unused pointer. + * + * Schedules the AP tasklet using a high resolution timer. + */ +static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) +{ + if (!ap_suspend_flag) + tasklet_schedule(&ap_tasklet); + return HRTIMER_NORESTART; +} + +/** + * ap_interrupt_handler() - Schedule ap_tasklet on interrupt + * @airq: pointer to adapter interrupt descriptor + */ +static void ap_interrupt_handler(struct airq_struct *airq) +{ + inc_irq_stat(IRQIO_APB); + if (!ap_suspend_flag) + tasklet_schedule(&ap_tasklet); +} + +/** + * ap_tasklet_fn(): Tasklet to poll all AP devices. + * @dummy: Unused variable + * + * Poll all AP devices on the bus. + */ +static void ap_tasklet_fn(unsigned long dummy) +{ + struct ap_device *ap_dev; + enum ap_wait wait = AP_WAIT_NONE; + + /* Reset the indicator if interrupts are used. Thus new interrupts can + * be received. Doing it in the beginning of the tasklet is therefor + * important that no requests on any AP get lost. + */ + if (ap_using_interrupts()) + xchg(ap_airq.lsi_ptr, 0); + + spin_lock(&ap_device_list_lock); + list_for_each_entry(ap_dev, &ap_device_list, list) { + spin_lock_bh(&ap_dev->lock); + wait = min(wait, ap_sm_event_loop(ap_dev, AP_EVENT_POLL)); + spin_unlock_bh(&ap_dev->lock); + } + spin_unlock(&ap_device_list_lock); + ap_sm_wait(wait); +} + +/** + * ap_poll_thread(): Thread that polls for finished requests. + * @data: Unused pointer + * + * AP bus poll thread. The purpose of this thread is to poll for + * finished requests in a loop if there is a "free" cpu - that is + * a cpu that doesn't have anything better to do. The polling stops + * as soon as there is another task or if all messages have been + * delivered. + */ +static int ap_poll_thread(void *data) +{ + DECLARE_WAITQUEUE(wait, current); + + set_user_nice(current, MAX_NICE); + set_freezable(); + while (!kthread_should_stop()) { + add_wait_queue(&ap_poll_wait, &wait); + set_current_state(TASK_INTERRUPTIBLE); + if (ap_suspend_flag || + atomic_read(&ap_poll_requests) <= 0) { + schedule(); + try_to_freeze(); + } + set_current_state(TASK_RUNNING); + remove_wait_queue(&ap_poll_wait, &wait); + if (need_resched()) { + schedule(); + try_to_freeze(); + continue; + } + ap_tasklet_fn(0); + } while (!kthread_should_stop()); + return 0; +} + +static int ap_poll_thread_start(void) +{ + int rc; + + if (ap_using_interrupts() || ap_poll_kthread) + return 0; + mutex_lock(&ap_poll_thread_mutex); + ap_poll_kthread = kthread_run(ap_poll_thread, NULL, "appoll"); + rc = PTR_RET(ap_poll_kthread); + if (rc) + ap_poll_kthread = NULL; + mutex_unlock(&ap_poll_thread_mutex); + return rc; +} + +static void ap_poll_thread_stop(void) +{ + if (!ap_poll_kthread) + return; + mutex_lock(&ap_poll_thread_mutex); + kthread_stop(ap_poll_kthread); + ap_poll_kthread = NULL; + mutex_unlock(&ap_poll_thread_mutex); } +/** + * ap_queue_message(): Queue a request to an AP device. + * @ap_dev: The AP device to queue the message to + * @ap_msg: The message that is to be added + */ +void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg) +{ + /* For asynchronous message handling a valid receive-callback + * is required. */ + BUG_ON(!ap_msg->receive); + + spin_lock_bh(&ap_dev->lock); + /* Queue the message. */ + list_add_tail(&ap_msg->list, &ap_dev->requestq); + ap_dev->requestq_count++; + ap_dev->total_request_count++; + /* Send/receive as many request from the queue as possible. */ + ap_sm_wait(ap_sm_event_loop(ap_dev, AP_EVENT_POLL)); + spin_unlock_bh(&ap_dev->lock); +} +EXPORT_SYMBOL(ap_queue_message); + +/** + * ap_cancel_message(): Cancel a crypto request. + * @ap_dev: The AP device that has the message queued + * @ap_msg: The message that is to be removed + * + * Cancel a crypto request. This is done by removing the request + * from the device pending or request queue. Note that the + * request stays on the AP queue. When it finishes the message + * reply will be discarded because the psmid can't be found. + */ +void ap_cancel_message(struct ap_device *ap_dev, struct ap_message *ap_msg) +{ + struct ap_message *tmp; + + spin_lock_bh(&ap_dev->lock); + if (!list_empty(&ap_msg->list)) { + list_for_each_entry(tmp, &ap_dev->pendingq, list) + if (tmp->psmid == ap_msg->psmid) { + ap_dev->pendingq_count--; + goto found; + } + ap_dev->requestq_count--; +found: + list_del_init(&ap_msg->list); + } + spin_unlock_bh(&ap_dev->lock); +} +EXPORT_SYMBOL(ap_cancel_message); + /* * AP device related attributes. */ @@ -690,21 +1096,17 @@ static ssize_t ap_reset_show(struct device *dev, int rc = 0; spin_lock_bh(&ap_dev->lock); - switch (ap_dev->reset) { - case AP_RESET_IGNORE: - rc = snprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); + switch (ap_dev->state) { + case AP_STATE_RESET_START: + case AP_STATE_RESET_WAIT: + rc = snprintf(buf, PAGE_SIZE, "Reset in progress.\n"); break; - case AP_RESET_ARMED: + case AP_STATE_WORKING: + case AP_STATE_QUEUE_FULL: rc = snprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); break; - case AP_RESET_DO: - rc = snprintf(buf, PAGE_SIZE, "Reset Timer expired.\n"); - break; - case AP_RESET_IN_PROGRESS: - rc = snprintf(buf, PAGE_SIZE, "Reset in progress.\n"); - break; default: - break; + rc = snprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); } spin_unlock_bh(&ap_dev->lock); return rc; @@ -719,17 +1121,12 @@ static ssize_t ap_interrupt_show(struct device *dev, int rc = 0; spin_lock_bh(&ap_dev->lock); - switch (ap_dev->interrupt) { - case AP_INTR_DISABLED: - rc = snprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); - break; - case AP_INTR_ENABLED: - rc = snprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); - break; - case AP_INTR_IN_PROGRESS: + if (ap_dev->state == AP_STATE_SETIRQ_WAIT) rc = snprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); - break; - } + else if (ap_dev->interrupt == AP_INTR_ENABLED) + rc = snprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); + else + rc = snprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); spin_unlock_bh(&ap_dev->lock); return rc; } @@ -823,99 +1220,95 @@ static int ap_uevent (struct device *dev, struct kobj_uevent_env *env) return retval; } -static int ap_bus_suspend(struct device *dev, pm_message_t state) +static int ap_dev_suspend(struct device *dev, pm_message_t state) { struct ap_device *ap_dev = to_ap_dev(dev); - unsigned long flags; - - if (!ap_suspend_flag) { - ap_suspend_flag = 1; - - /* Disable scanning for devices, thus we do not want to scan - * for them after removing. - */ - del_timer_sync(&ap_config_timer); - if (ap_work_queue != NULL) { - destroy_workqueue(ap_work_queue); - ap_work_queue = NULL; - } - tasklet_disable(&ap_tasklet); - } /* Poll on the device until all requests are finished. */ - do { - flags = 0; - spin_lock_bh(&ap_dev->lock); - __ap_poll_device(ap_dev, &flags); - spin_unlock_bh(&ap_dev->lock); - } while ((flags & 1) || (flags & 2)); - spin_lock_bh(&ap_dev->lock); - ap_dev->unregistered = 1; + ap_dev->state = AP_STATE_SUSPEND_WAIT; + while (ap_sm_event(ap_dev, AP_EVENT_POLL) != AP_WAIT_NONE) + ; + ap_dev->state = AP_STATE_BORKED; spin_unlock_bh(&ap_dev->lock); + return 0; +} +static int ap_dev_resume(struct device *dev) +{ return 0; } -static int ap_bus_resume(struct device *dev) +static void ap_bus_suspend(void) +{ + ap_suspend_flag = 1; + /* + * Disable scanning for devices, thus we do not want to scan + * for them after removing. + */ + flush_work(&ap_scan_work); + tasklet_disable(&ap_tasklet); +} + +static int __ap_devices_unregister(struct device *dev, void *dummy) +{ + device_unregister(dev); + return 0; +} + +static void ap_bus_resume(void) { - struct ap_device *ap_dev = to_ap_dev(dev); int rc; - if (ap_suspend_flag) { - ap_suspend_flag = 0; - if (ap_interrupts_available()) { - if (!ap_using_interrupts()) { - rc = register_adapter_interrupt(&ap_airq); - ap_airq_flag = (rc == 0); - } - } else { - if (ap_using_interrupts()) { - unregister_adapter_interrupt(&ap_airq); - ap_airq_flag = 0; - } - } - ap_query_configuration(); - if (!user_set_domain) { - ap_domain_index = -1; - ap_select_domain(); - } - init_timer(&ap_config_timer); - ap_config_timer.function = ap_config_timeout; - ap_config_timer.data = 0; - ap_config_timer.expires = jiffies + ap_config_time * HZ; - add_timer(&ap_config_timer); - ap_work_queue = create_singlethread_workqueue("kapwork"); - if (!ap_work_queue) - return -ENOMEM; - tasklet_enable(&ap_tasklet); - if (!ap_using_interrupts()) - ap_schedule_poll_timer(); - else - tasklet_schedule(&ap_tasklet); - if (ap_thread_flag) - rc = ap_poll_thread_start(); - else - rc = 0; - } else - rc = 0; - if (AP_QID_QUEUE(ap_dev->qid) != ap_domain_index) { - spin_lock_bh(&ap_dev->lock); - ap_dev->qid = AP_MKQID(AP_QID_DEVICE(ap_dev->qid), - ap_domain_index); - spin_unlock_bh(&ap_dev->lock); + /* Unconditionally remove all AP devices */ + bus_for_each_dev(&ap_bus_type, NULL, NULL, __ap_devices_unregister); + /* Reset thin interrupt setting */ + if (ap_interrupts_available() && !ap_using_interrupts()) { + rc = register_adapter_interrupt(&ap_airq); + ap_airq_flag = (rc == 0); } - queue_work(ap_work_queue, &ap_config_work); + if (!ap_interrupts_available() && ap_using_interrupts()) { + unregister_adapter_interrupt(&ap_airq); + ap_airq_flag = 0; + } + /* Reset domain */ + if (!user_set_domain) + ap_domain_index = -1; + /* Get things going again */ + ap_suspend_flag = 0; + if (ap_airq_flag) + xchg(ap_airq.lsi_ptr, 0); + tasklet_enable(&ap_tasklet); + queue_work(system_long_wq, &ap_scan_work); +} - return rc; +static int ap_power_event(struct notifier_block *this, unsigned long event, + void *ptr) +{ + switch (event) { + case PM_HIBERNATION_PREPARE: + case PM_SUSPEND_PREPARE: + ap_bus_suspend(); + break; + case PM_POST_HIBERNATION: + case PM_POST_SUSPEND: + ap_bus_resume(); + break; + default: + break; + } + return NOTIFY_DONE; } +static struct notifier_block ap_power_notifier = { + .notifier_call = ap_power_event, +}; static struct bus_type ap_bus_type = { .name = "ap", .match = &ap_bus_match, .uevent = &ap_uevent, - .suspend = ap_bus_suspend, - .resume = ap_bus_resume + .suspend = ap_dev_suspend, + .resume = ap_dev_resume, }; static int ap_device_probe(struct device *dev) @@ -925,21 +1318,9 @@ static int ap_device_probe(struct device *dev) int rc; ap_dev->drv = ap_drv; - - spin_lock_bh(&ap_device_list_lock); - list_add(&ap_dev->list, &ap_device_list); - spin_unlock_bh(&ap_device_list_lock); - rc = ap_drv->probe ? ap_drv->probe(ap_dev) : -ENODEV; - if (rc) { - spin_lock_bh(&ap_device_list_lock); - list_del_init(&ap_dev->list); - spin_unlock_bh(&ap_device_list_lock); - } else { - if (ap_dev->reset == AP_RESET_IN_PROGRESS || - ap_dev->interrupt == AP_INTR_IN_PROGRESS) - __ap_schedule_poll_timer(); - } + if (rc) + ap_dev->drv = NULL; return rc; } @@ -956,12 +1337,14 @@ static void __ap_flush_queue(struct ap_device *ap_dev) list_for_each_entry_safe(ap_msg, next, &ap_dev->pendingq, list) { list_del_init(&ap_msg->list); ap_dev->pendingq_count--; - ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); + ap_msg->rc = -EAGAIN; + ap_msg->receive(ap_dev, ap_msg, NULL); } list_for_each_entry_safe(ap_msg, next, &ap_dev->requestq, list) { list_del_init(&ap_msg->list); ap_dev->requestq_count--; - ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); + ap_msg->rc = -EAGAIN; + ap_msg->receive(ap_dev, ap_msg, NULL); } } @@ -991,6 +1374,11 @@ static int ap_device_remove(struct device *dev) return 0; } +static void ap_device_release(struct device *dev) +{ + kfree(to_ap_dev(dev)); +} + int ap_driver_register(struct ap_driver *ap_drv, struct module *owner, char *name) { @@ -1013,60 +1401,16 @@ EXPORT_SYMBOL(ap_driver_unregister); void ap_bus_force_rescan(void) { - /* reconfigure the AP bus rescan timer. */ - mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ); + if (ap_suspend_flag) + return; /* processing a asynchronous bus rescan */ - queue_work(ap_work_queue, &ap_config_work); - flush_work(&ap_config_work); + del_timer(&ap_config_timer); + queue_work(system_long_wq, &ap_scan_work); + flush_work(&ap_scan_work); } EXPORT_SYMBOL(ap_bus_force_rescan); /* - * ap_test_config(): helper function to extract the nrth bit - * within the unsigned int array field. - */ -static inline int ap_test_config(unsigned int *field, unsigned int nr) -{ - if (nr > 0xFFu) - return 0; - return ap_test_bit((field + (nr >> 5)), (nr & 0x1f)); -} - -/* - * ap_test_config_card_id(): Test, whether an AP card ID is configured. - * @id AP card ID - * - * Returns 0 if the card is not configured - * 1 if the card is configured or - * if the configuration information is not available - */ -static inline int ap_test_config_card_id(unsigned int id) -{ - if (!ap_configuration) - return 1; - return ap_test_config(ap_configuration->apm, id); -} - -/* - * ap_test_config_domain(): Test, whether an AP usage domain is configured. - * @domain AP usage domain ID - * - * Returns 0 if the usage domain is not configured - * 1 if the usage domain is configured or - * if the configuration information is not available - */ -static inline int ap_test_config_domain(unsigned int domain) -{ - if (!ap_configuration) /* QCI not supported */ - if (domain < 16) - return 1; /* then domains 0...15 are configured */ - else - return 0; - else - return ap_test_config(ap_configuration->aqm, domain); -} - -/* * AP bus attributes. */ static ssize_t ap_domain_show(struct bus_type *bus, char *buf) @@ -1078,21 +1422,20 @@ static BUS_ATTR(ap_domain, 0444, ap_domain_show, NULL); static ssize_t ap_control_domain_mask_show(struct bus_type *bus, char *buf) { - if (ap_configuration != NULL) { /* QCI not supported */ - if (test_facility(76)) { /* format 1 - 256 bit domain field */ - return snprintf(buf, PAGE_SIZE, - "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", + if (!ap_configuration) /* QCI not supported */ + return snprintf(buf, PAGE_SIZE, "not supported\n"); + if (!test_facility(76)) + /* format 0 - 16 bit domain field */ + return snprintf(buf, PAGE_SIZE, "%08x%08x\n", + ap_configuration->adm[0], + ap_configuration->adm[1]); + /* format 1 - 256 bit domain field */ + return snprintf(buf, PAGE_SIZE, + "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", ap_configuration->adm[0], ap_configuration->adm[1], ap_configuration->adm[2], ap_configuration->adm[3], ap_configuration->adm[4], ap_configuration->adm[5], ap_configuration->adm[6], ap_configuration->adm[7]); - } else { /* format 0 - 16 bit domain field */ - return snprintf(buf, PAGE_SIZE, "%08x%08x\n", - ap_configuration->adm[0], ap_configuration->adm[1]); - } - } else { - return snprintf(buf, PAGE_SIZE, "not supported\n"); - } } static BUS_ATTR(ap_control_domain_mask, 0444, @@ -1119,11 +1462,7 @@ static ssize_t ap_config_time_store(struct bus_type *bus, if (sscanf(buf, "%d\n", &time) != 1 || time < 5 || time > 120) return -EINVAL; ap_config_time = time; - if (!timer_pending(&ap_config_timer) || - !mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ)) { - ap_config_timer.expires = jiffies + ap_config_time * HZ; - add_timer(&ap_config_timer); - } + mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ); return count; } @@ -1144,9 +1483,8 @@ static ssize_t ap_poll_thread_store(struct bus_type *bus, if (flag) { rc = ap_poll_thread_start(); if (rc) - return rc; - } - else + count = rc; + } else ap_poll_thread_stop(); return count; } @@ -1184,35 +1522,12 @@ static BUS_ATTR(poll_timeout, 0644, poll_timeout_show, poll_timeout_store); static ssize_t ap_max_domain_id_show(struct bus_type *bus, char *buf) { - ap_qid_t qid; - int i, nd, max_domain_id = -1; - unsigned long fbits; - - if (ap_configuration) { - if (ap_domain_index >= 0 && ap_domain_index < AP_DOMAINS) { - for (i = 0; i < AP_DEVICES; i++) { - if (!ap_test_config_card_id(i)) - continue; - qid = AP_MKQID(i, ap_domain_index); - fbits = ap_query_facilities(qid); - if (fbits & (1UL << 57)) { - /* the N bit is 0, Nd field is filled */ - nd = (int)((fbits & 0x00FF0000UL)>>16); - if (nd > 0) - max_domain_id = nd; - else - max_domain_id = 15; - } else { - /* N bit is 1, max 16 domains */ - max_domain_id = 15; - } - break; - } - } - } else { - /* no APXA support, older machines with max 16 domains */ + int max_domain_id; + + if (ap_configuration) + max_domain_id = ap_max_domain_id ? : -1; + else max_domain_id = 15; - } return snprintf(buf, PAGE_SIZE, "%d\n", max_domain_id); } @@ -1230,44 +1545,22 @@ static struct bus_attribute *const ap_bus_attrs[] = { }; /** - * ap_query_configuration(): Query AP configuration information. - * - * Query information of installed cards and configured domains from AP. - */ -static void ap_query_configuration(void) -{ - if (ap_configuration_available()) { - if (!ap_configuration) - ap_configuration = - kzalloc(sizeof(struct ap_config_info), - GFP_KERNEL); - if (ap_configuration) - __ap_query_configuration(ap_configuration); - } else - ap_configuration = NULL; -} - -/** * ap_select_domain(): Select an AP domain. * * Pick one of the 16 AP domains. */ static int ap_select_domain(void) { - int queue_depth, device_type, count, max_count, best_domain; - ap_qid_t qid; - int rc, i, j; - - /* IF APXA isn't installed, only 16 domains could be defined */ - if (!ap_configuration->ap_extended && (ap_domain_index > 15)) - return -EINVAL; + int count, max_count, best_domain; + struct ap_queue_status status; + int i, j; /* * We want to use a single domain. Either the one specified with * the "domain=" parameter or the domain with the maximum number * of devices. */ - if (ap_domain_index >= 0 && ap_domain_index < AP_DOMAINS) + if (ap_domain_index >= 0) /* Domain has already been selected. */ return 0; best_domain = -1; @@ -1279,9 +1572,8 @@ static int ap_select_domain(void) for (j = 0; j < AP_DEVICES; j++) { if (!ap_test_config_card_id(j)) continue; - qid = AP_MKQID(j, i); - rc = ap_query_queue(qid, &queue_depth, &device_type); - if (rc) + status = ap_test_queue(AP_MKQID(j, i), NULL); + if (status.response_code != AP_RESPONSE_NORMAL) continue; count++; } @@ -1298,109 +1590,6 @@ static int ap_select_domain(void) } /** - * ap_probe_device_type(): Find the device type of an AP. - * @ap_dev: pointer to the AP device. - * - * Find the device type if query queue returned a device type of 0. - */ -static int ap_probe_device_type(struct ap_device *ap_dev) -{ - static unsigned char msg[] = { - 0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x01,0x00,0x43,0x43,0x41,0x2d,0x41,0x50, - 0x50,0x4c,0x20,0x20,0x20,0x01,0x01,0x01, - 0x00,0x00,0x00,0x00,0x50,0x4b,0x00,0x00, - 0x00,0x00,0x01,0x1c,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x05,0xb8,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x70,0x00,0x41,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x54,0x32,0x01,0x00,0xa0,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0xb8,0x05,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x0a,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00, - 0x49,0x43,0x53,0x46,0x20,0x20,0x20,0x20, - 0x50,0x4b,0x0a,0x00,0x50,0x4b,0x43,0x53, - 0x2d,0x31,0x2e,0x32,0x37,0x00,0x11,0x22, - 0x33,0x44,0x55,0x66,0x77,0x88,0x99,0x00, - 0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88, - 0x99,0x00,0x11,0x22,0x33,0x44,0x55,0x66, - 0x77,0x88,0x99,0x00,0x11,0x22,0x33,0x44, - 0x55,0x66,0x77,0x88,0x99,0x00,0x11,0x22, - 0x33,0x44,0x55,0x66,0x77,0x88,0x99,0x00, - 0x11,0x22,0x33,0x5d,0x00,0x5b,0x00,0x77, - 0x88,0x1e,0x00,0x00,0x57,0x00,0x00,0x00, - 0x00,0x04,0x00,0x00,0x4f,0x00,0x00,0x00, - 0x03,0x02,0x00,0x00,0x40,0x01,0x00,0x01, - 0xce,0x02,0x68,0x2d,0x5f,0xa9,0xde,0x0c, - 0xf6,0xd2,0x7b,0x58,0x4b,0xf9,0x28,0x68, - 0x3d,0xb4,0xf4,0xef,0x78,0xd5,0xbe,0x66, - 0x63,0x42,0xef,0xf8,0xfd,0xa4,0xf8,0xb0, - 0x8e,0x29,0xc2,0xc9,0x2e,0xd8,0x45,0xb8, - 0x53,0x8c,0x6f,0x4e,0x72,0x8f,0x6c,0x04, - 0x9c,0x88,0xfc,0x1e,0xc5,0x83,0x55,0x57, - 0xf7,0xdd,0xfd,0x4f,0x11,0x36,0x95,0x5d, - }; - struct ap_queue_status status; - unsigned long long psmid; - char *reply; - int rc, i; - - reply = (void *) get_zeroed_page(GFP_KERNEL); - if (!reply) { - rc = -ENOMEM; - goto out; - } - - status = __ap_send(ap_dev->qid, 0x0102030405060708ULL, - msg, sizeof(msg), 0); - if (status.response_code != AP_RESPONSE_NORMAL) { - rc = -ENODEV; - goto out_free; - } - - /* Wait for the test message to complete. */ - for (i = 0; i < 6; i++) { - msleep(300); - status = __ap_recv(ap_dev->qid, &psmid, reply, 4096); - if (status.response_code == AP_RESPONSE_NORMAL && - psmid == 0x0102030405060708ULL) - break; - } - if (i < 6) { - /* Got an answer. */ - if (reply[0] == 0x00 && reply[1] == 0x86) - ap_dev->device_type = AP_DEVICE_TYPE_PCICC; - else - ap_dev->device_type = AP_DEVICE_TYPE_PCICA; - rc = 0; - } else - rc = -ENODEV; - -out_free: - free_page((unsigned long) reply); -out: - return rc; -} - -static void ap_interrupt_handler(struct airq_struct *airq) -{ - inc_irq_stat(IRQIO_APB); - tasklet_schedule(&ap_tasklet); -} - -/** * __ap_scan_bus(): Scan the AP bus. * @dev: Pointer to device * @data: Pointer to data @@ -1412,49 +1601,38 @@ static int __ap_scan_bus(struct device *dev, void *data) return to_ap_dev(dev)->qid == (ap_qid_t)(unsigned long) data; } -static void ap_device_release(struct device *dev) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - - kfree(ap_dev); -} - static void ap_scan_bus(struct work_struct *unused) { struct ap_device *ap_dev; struct device *dev; ap_qid_t qid; int queue_depth = 0, device_type = 0; - unsigned int device_functions; - int rc, i; + unsigned int device_functions = 0; + int rc, i, borked; ap_query_configuration(); - if (ap_select_domain() != 0) { - return; - } + if (ap_select_domain() != 0) + goto out; + for (i = 0; i < AP_DEVICES; i++) { qid = AP_MKQID(i, ap_domain_index); dev = bus_find_device(&ap_bus_type, NULL, (void *)(unsigned long)qid, __ap_scan_bus); - if (ap_test_config_card_id(i)) - rc = ap_query_queue(qid, &queue_depth, &device_type); - else - rc = -ENODEV; + rc = ap_query_queue(qid, &queue_depth, &device_type, + &device_functions); if (dev) { ap_dev = to_ap_dev(dev); spin_lock_bh(&ap_dev->lock); - if (rc == -ENODEV || ap_dev->unregistered) { - spin_unlock_bh(&ap_dev->lock); - if (ap_dev->unregistered) - i--; - device_unregister(dev); - put_device(dev); - continue; - } + if (rc == -ENODEV) + ap_dev->state = AP_STATE_BORKED; + borked = ap_dev->state == AP_STATE_BORKED; spin_unlock_bh(&ap_dev->lock); + if (borked) /* Remove broken device */ + device_unregister(dev); put_device(dev); - continue; + if (!borked) + continue; } if (rc) continue; @@ -1462,525 +1640,72 @@ static void ap_scan_bus(struct work_struct *unused) if (!ap_dev) break; ap_dev->qid = qid; - rc = ap_init_queue(ap_dev); - if ((rc != 0) && (rc != -EBUSY)) { - kfree(ap_dev); - continue; - } + ap_dev->state = AP_STATE_RESET_START; + ap_dev->interrupt = AP_INTR_DISABLED; ap_dev->queue_depth = queue_depth; - ap_dev->unregistered = 1; + ap_dev->raw_hwtype = device_type; + ap_dev->device_type = device_type; + ap_dev->functions = device_functions; spin_lock_init(&ap_dev->lock); INIT_LIST_HEAD(&ap_dev->pendingq); INIT_LIST_HEAD(&ap_dev->requestq); INIT_LIST_HEAD(&ap_dev->list); setup_timer(&ap_dev->timeout, ap_request_timeout, (unsigned long) ap_dev); - switch (device_type) { - case 0: - /* device type probing for old cards */ - if (ap_probe_device_type(ap_dev)) { - kfree(ap_dev); - continue; - } - break; - default: - ap_dev->device_type = device_type; - } - ap_dev->raw_hwtype = device_type; - - rc = ap_query_functions(qid, &device_functions); - if (!rc) - ap_dev->functions = device_functions; - else - ap_dev->functions = 0u; ap_dev->device.bus = &ap_bus_type; ap_dev->device.parent = ap_root_device; - if (dev_set_name(&ap_dev->device, "card%02x", - AP_QID_DEVICE(ap_dev->qid))) { + rc = dev_set_name(&ap_dev->device, "card%02x", + AP_QID_DEVICE(ap_dev->qid)); + if (rc) { kfree(ap_dev); continue; } + /* Add to list of devices */ + spin_lock_bh(&ap_device_list_lock); + list_add(&ap_dev->list, &ap_device_list); + spin_unlock_bh(&ap_device_list_lock); + /* Start with a device reset */ + spin_lock_bh(&ap_dev->lock); + ap_sm_wait(ap_sm_event(ap_dev, AP_EVENT_POLL)); + spin_unlock_bh(&ap_dev->lock); + /* Register device */ ap_dev->device.release = ap_device_release; rc = device_register(&ap_dev->device); if (rc) { + spin_lock_bh(&ap_dev->lock); + list_del_init(&ap_dev->list); + spin_unlock_bh(&ap_dev->lock); put_device(&ap_dev->device); continue; } /* Add device attributes. */ rc = sysfs_create_group(&ap_dev->device.kobj, &ap_dev_attr_group); - if (!rc) { - spin_lock_bh(&ap_dev->lock); - ap_dev->unregistered = 0; - spin_unlock_bh(&ap_dev->lock); - } - else + if (rc) { device_unregister(&ap_dev->device); - } -} - -static void -ap_config_timeout(unsigned long ptr) -{ - queue_work(ap_work_queue, &ap_config_work); - ap_config_timer.expires = jiffies + ap_config_time * HZ; - add_timer(&ap_config_timer); -} - -/** - * ap_poll_read(): Receive pending reply messages from an AP device. - * @ap_dev: pointer to the AP device - * @flags: pointer to control flags, bit 2^0 is set if another poll is - * required, bit 2^1 is set if the poll timer needs to get armed - * - * Returns 0 if the device is still present, -ENODEV if not. - */ -static int ap_poll_read(struct ap_device *ap_dev, unsigned long *flags) -{ - struct ap_queue_status status; - struct ap_message *ap_msg; - - if (ap_dev->queue_count <= 0) - return 0; - status = __ap_recv(ap_dev->qid, &ap_dev->reply->psmid, - ap_dev->reply->message, ap_dev->reply->length); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - ap_dev->interrupt = status.int_enabled; - atomic_dec(&ap_poll_requests); - ap_decrease_queue_count(ap_dev); - list_for_each_entry(ap_msg, &ap_dev->pendingq, list) { - if (ap_msg->psmid != ap_dev->reply->psmid) - continue; - list_del_init(&ap_msg->list); - ap_dev->pendingq_count--; - ap_msg->receive(ap_dev, ap_msg, ap_dev->reply); - break; - } - if (ap_dev->queue_count > 0) - *flags |= 1; - break; - case AP_RESPONSE_NO_PENDING_REPLY: - ap_dev->interrupt = status.int_enabled; - if (status.queue_empty) { - /* The card shouldn't forget requests but who knows. */ - atomic_sub(ap_dev->queue_count, &ap_poll_requests); - ap_dev->queue_count = 0; - list_splice_init(&ap_dev->pendingq, &ap_dev->requestq); - ap_dev->requestq_count += ap_dev->pendingq_count; - ap_dev->pendingq_count = 0; - } else - *flags |= 2; - break; - default: - return -ENODEV; - } - return 0; -} - -/** - * ap_poll_write(): Send messages from the request queue to an AP device. - * @ap_dev: pointer to the AP device - * @flags: pointer to control flags, bit 2^0 is set if another poll is - * required, bit 2^1 is set if the poll timer needs to get armed - * - * Returns 0 if the device is still present, -ENODEV if not. - */ -static int ap_poll_write(struct ap_device *ap_dev, unsigned long *flags) -{ - struct ap_queue_status status; - struct ap_message *ap_msg; - - if (ap_dev->requestq_count <= 0 || - (ap_dev->queue_count >= ap_dev->queue_depth) || - (ap_dev->reset == AP_RESET_IN_PROGRESS)) - return 0; - /* Start the next request on the queue. */ - ap_msg = list_entry(ap_dev->requestq.next, struct ap_message, list); - status = __ap_send(ap_dev->qid, ap_msg->psmid, - ap_msg->message, ap_msg->length, ap_msg->special); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - atomic_inc(&ap_poll_requests); - ap_increase_queue_count(ap_dev); - list_move_tail(&ap_msg->list, &ap_dev->pendingq); - ap_dev->requestq_count--; - ap_dev->pendingq_count++; - if (ap_dev->queue_count < ap_dev->queue_depth && - ap_dev->requestq_count > 0) - *flags |= 1; - *flags |= 2; - break; - case AP_RESPONSE_RESET_IN_PROGRESS: - __ap_schedule_poll_timer(); - case AP_RESPONSE_Q_FULL: - *flags |= 2; - break; - case AP_RESPONSE_MESSAGE_TOO_BIG: - case AP_RESPONSE_REQ_FAC_NOT_INST: - return -EINVAL; - default: - return -ENODEV; - } - return 0; -} - -/** - * ap_poll_queue(): Poll AP device for pending replies and send new messages. - * Check if the queue has a pending reset. In case it's done re-enable - * interrupts, otherwise reschedule the poll_timer for another attempt. - * @ap_dev: pointer to the bus device - * @flags: pointer to control flags, bit 2^0 is set if another poll is - * required, bit 2^1 is set if the poll timer needs to get armed - * - * Poll AP device for pending replies and send new messages. If either - * ap_poll_read or ap_poll_write returns -ENODEV unregister the device. - * Returns 0. - */ -static inline int ap_poll_queue(struct ap_device *ap_dev, unsigned long *flags) -{ - int rc, depth, type; - struct ap_queue_status status; - - - if (ap_dev->reset == AP_RESET_IN_PROGRESS) { - status = ap_test_queue(ap_dev->qid, &depth, &type); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - ap_dev->reset = AP_RESET_IGNORE; - if (ap_using_interrupts()) { - rc = ap_queue_enable_interruption( - ap_dev, ap_airq.lsi_ptr); - if (!rc) - ap_dev->interrupt = AP_INTR_IN_PROGRESS; - else if (rc == -ENODEV) { - pr_err("Registering adapter interrupts for " - "AP %d failed\n", AP_QID_DEVICE(ap_dev->qid)); - return rc; - } - } - /* fall through */ - case AP_RESPONSE_BUSY: - case AP_RESPONSE_RESET_IN_PROGRESS: - *flags |= AP_POLL_AFTER_TIMEOUT; - break; - case AP_RESPONSE_Q_NOT_AVAIL: - case AP_RESPONSE_DECONFIGURED: - case AP_RESPONSE_CHECKSTOPPED: - return -ENODEV; - default: - break; - } - } - - if ((ap_dev->reset != AP_RESET_IN_PROGRESS) && - (ap_dev->interrupt == AP_INTR_IN_PROGRESS)) { - status = ap_test_queue(ap_dev->qid, &depth, &type); - if (ap_using_interrupts()) { - if (status.int_enabled == 1) - ap_dev->interrupt = AP_INTR_ENABLED; - else - *flags |= AP_POLL_AFTER_TIMEOUT; - } else - ap_dev->interrupt = AP_INTR_DISABLED; - } - - rc = ap_poll_read(ap_dev, flags); - if (rc) - return rc; - return ap_poll_write(ap_dev, flags); -} - -/** - * __ap_queue_message(): Queue a message to a device. - * @ap_dev: pointer to the AP device - * @ap_msg: the message to be queued - * - * Queue a message to a device. Returns 0 if successful. - */ -static int __ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg) -{ - struct ap_queue_status status; - - if (list_empty(&ap_dev->requestq) && - (ap_dev->queue_count < ap_dev->queue_depth) && - (ap_dev->reset != AP_RESET_IN_PROGRESS)) { - status = __ap_send(ap_dev->qid, ap_msg->psmid, - ap_msg->message, ap_msg->length, - ap_msg->special); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - list_add_tail(&ap_msg->list, &ap_dev->pendingq); - atomic_inc(&ap_poll_requests); - ap_dev->pendingq_count++; - ap_increase_queue_count(ap_dev); - ap_dev->total_request_count++; - break; - case AP_RESPONSE_Q_FULL: - case AP_RESPONSE_RESET_IN_PROGRESS: - list_add_tail(&ap_msg->list, &ap_dev->requestq); - ap_dev->requestq_count++; - ap_dev->total_request_count++; - return -EBUSY; - case AP_RESPONSE_REQ_FAC_NOT_INST: - case AP_RESPONSE_MESSAGE_TOO_BIG: - ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-EINVAL)); - return -EINVAL; - default: /* Device is gone. */ - ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); - return -ENODEV; - } - } else { - list_add_tail(&ap_msg->list, &ap_dev->requestq); - ap_dev->requestq_count++; - ap_dev->total_request_count++; - return -EBUSY; - } - ap_schedule_poll_timer(); - return 0; -} - -void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg) -{ - unsigned long flags; - int rc; - - /* For asynchronous message handling a valid receive-callback - * is required. */ - BUG_ON(!ap_msg->receive); - - spin_lock_bh(&ap_dev->lock); - if (!ap_dev->unregistered) { - /* Make room on the queue by polling for finished requests. */ - rc = ap_poll_queue(ap_dev, &flags); - if (!rc) - rc = __ap_queue_message(ap_dev, ap_msg); - if (!rc) - wake_up(&ap_poll_wait); - if (rc == -ENODEV) - ap_dev->unregistered = 1; - } else { - ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); - rc = -ENODEV; - } - spin_unlock_bh(&ap_dev->lock); - if (rc == -ENODEV) - device_unregister(&ap_dev->device); -} -EXPORT_SYMBOL(ap_queue_message); - -/** - * ap_cancel_message(): Cancel a crypto request. - * @ap_dev: The AP device that has the message queued - * @ap_msg: The message that is to be removed - * - * Cancel a crypto request. This is done by removing the request - * from the device pending or request queue. Note that the - * request stays on the AP queue. When it finishes the message - * reply will be discarded because the psmid can't be found. - */ -void ap_cancel_message(struct ap_device *ap_dev, struct ap_message *ap_msg) -{ - struct ap_message *tmp; - - spin_lock_bh(&ap_dev->lock); - if (!list_empty(&ap_msg->list)) { - list_for_each_entry(tmp, &ap_dev->pendingq, list) - if (tmp->psmid == ap_msg->psmid) { - ap_dev->pendingq_count--; - goto found; - } - ap_dev->requestq_count--; - found: - list_del_init(&ap_msg->list); - } - spin_unlock_bh(&ap_dev->lock); -} -EXPORT_SYMBOL(ap_cancel_message); - -/** - * ap_poll_timeout(): AP receive polling for finished AP requests. - * @unused: Unused pointer. - * - * Schedules the AP tasklet using a high resolution timer. - */ -static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) -{ - tasklet_schedule(&ap_tasklet); - return HRTIMER_NORESTART; -} - -/** - * ap_reset(): Reset a not responding AP device. - * @ap_dev: Pointer to the AP device - * - * Reset a not responding AP device and move all requests from the - * pending queue to the request queue. - */ -static void ap_reset(struct ap_device *ap_dev, unsigned long *flags) -{ - int rc; - - atomic_sub(ap_dev->queue_count, &ap_poll_requests); - ap_dev->queue_count = 0; - list_splice_init(&ap_dev->pendingq, &ap_dev->requestq); - ap_dev->requestq_count += ap_dev->pendingq_count; - ap_dev->pendingq_count = 0; - rc = ap_init_queue(ap_dev); - if (rc == -ENODEV) - ap_dev->unregistered = 1; - else - *flags |= AP_POLL_AFTER_TIMEOUT; -} - -static int __ap_poll_device(struct ap_device *ap_dev, unsigned long *flags) -{ - if (!ap_dev->unregistered) { - if (ap_poll_queue(ap_dev, flags)) - ap_dev->unregistered = 1; - if (ap_dev->reset == AP_RESET_DO) - ap_reset(ap_dev, flags); - } - return 0; -} - -/** - * ap_poll_all(): Poll all AP devices. - * @dummy: Unused variable - * - * Poll all AP devices on the bus in a round robin fashion. Continue - * polling until bit 2^0 of the control flags is not set. If bit 2^1 - * of the control flags has been set arm the poll timer. - */ -static void ap_poll_all(unsigned long dummy) -{ - unsigned long flags; - struct ap_device *ap_dev; - - /* Reset the indicator if interrupts are used. Thus new interrupts can - * be received. Doing it in the beginning of the tasklet is therefor - * important that no requests on any AP get lost. - */ - if (ap_using_interrupts()) - xchg(ap_airq.lsi_ptr, 0); - do { - flags = 0; - spin_lock(&ap_device_list_lock); - list_for_each_entry(ap_dev, &ap_device_list, list) { - spin_lock(&ap_dev->lock); - __ap_poll_device(ap_dev, &flags); - spin_unlock(&ap_dev->lock); - } - spin_unlock(&ap_device_list_lock); - } while (flags & AP_POLL_IMMEDIATELY); - if (flags & AP_POLL_AFTER_TIMEOUT) - __ap_schedule_poll_timer(); -} - -/** - * ap_poll_thread(): Thread that polls for finished requests. - * @data: Unused pointer - * - * AP bus poll thread. The purpose of this thread is to poll for - * finished requests in a loop if there is a "free" cpu - that is - * a cpu that doesn't have anything better to do. The polling stops - * as soon as there is another task or if all messages have been - * delivered. - */ -static int ap_poll_thread(void *data) -{ - DECLARE_WAITQUEUE(wait, current); - unsigned long flags; - int requests; - struct ap_device *ap_dev; - - set_user_nice(current, MAX_NICE); - while (1) { - if (ap_suspend_flag) - return 0; - if (need_resched()) { - schedule(); continue; } - add_wait_queue(&ap_poll_wait, &wait); - set_current_state(TASK_INTERRUPTIBLE); - if (kthread_should_stop()) - break; - requests = atomic_read(&ap_poll_requests); - if (requests <= 0) - schedule(); - set_current_state(TASK_RUNNING); - remove_wait_queue(&ap_poll_wait, &wait); - - flags = 0; - spin_lock_bh(&ap_device_list_lock); - list_for_each_entry(ap_dev, &ap_device_list, list) { - spin_lock(&ap_dev->lock); - __ap_poll_device(ap_dev, &flags); - spin_unlock(&ap_dev->lock); - } - spin_unlock_bh(&ap_device_list_lock); } - set_current_state(TASK_RUNNING); - remove_wait_queue(&ap_poll_wait, &wait); - return 0; -} - -static int ap_poll_thread_start(void) -{ - int rc; - - if (ap_using_interrupts() || ap_suspend_flag) - return 0; - mutex_lock(&ap_poll_thread_mutex); - if (!ap_poll_kthread) { - ap_poll_kthread = kthread_run(ap_poll_thread, NULL, "appoll"); - rc = PTR_RET(ap_poll_kthread); - if (rc) - ap_poll_kthread = NULL; - } - else - rc = 0; - mutex_unlock(&ap_poll_thread_mutex); - return rc; -} - -static void ap_poll_thread_stop(void) -{ - mutex_lock(&ap_poll_thread_mutex); - if (ap_poll_kthread) { - kthread_stop(ap_poll_kthread); - ap_poll_kthread = NULL; - } - mutex_unlock(&ap_poll_thread_mutex); +out: + mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ); } -/** - * ap_request_timeout(): Handling of request timeouts - * @data: Holds the AP device. - * - * Handles request timeouts. - */ -static void ap_request_timeout(unsigned long data) +static void ap_config_timeout(unsigned long ptr) { - struct ap_device *ap_dev = (struct ap_device *) data; - - if (ap_dev->reset == AP_RESET_ARMED) { - ap_dev->reset = AP_RESET_DO; - - if (ap_using_interrupts()) - tasklet_schedule(&ap_tasklet); - } + if (ap_suspend_flag) + return; + queue_work(system_long_wq, &ap_scan_work); } static void ap_reset_domain(void) { int i; - if ((ap_domain_index != -1) && (ap_test_config_domain(ap_domain_index))) - for (i = 0; i < AP_DEVICES; i++) - ap_reset_queue(AP_MKQID(i, ap_domain_index)); + if (ap_domain_index == -1 || !ap_test_config_domain(ap_domain_index)) + return; + for (i = 0; i < AP_DEVICES; i++) + ap_reset_queue(AP_MKQID(i, ap_domain_index)); } static void ap_reset_all(void) @@ -2009,11 +1734,24 @@ static struct reset_call ap_reset_call = { */ int __init ap_module_init(void) { + int max_domain_id; int rc, i; - if (ap_domain_index < -1 || ap_domain_index >= AP_DOMAINS) { - pr_warning("%d is not a valid cryptographic domain\n", - ap_domain_index); + if (ap_instructions_available() != 0) { + pr_warn("The hardware system does not support AP instructions\n"); + return -ENODEV; + } + + /* Get AP configuration data if available */ + ap_init_configuration(); + + if (ap_configuration) + max_domain_id = ap_max_domain_id ? : (AP_DOMAINS - 1); + else + max_domain_id = 15; + if (ap_domain_index < -1 || ap_domain_index > max_domain_id) { + pr_warn("%d is not a valid cryptographic domain\n", + ap_domain_index); return -EINVAL; } /* In resume callback we need to know if the user had set the domain. @@ -2022,11 +1760,6 @@ int __init ap_module_init(void) if (ap_domain_index >= 0) user_set_domain = 1; - if (ap_instructions_available() != 0) { - pr_warning("The hardware system does not support " - "AP instructions\n"); - return -ENODEV; - } if (ap_interrupts_available()) { rc = register_adapter_interrupt(&ap_airq); ap_airq_flag = (rc == 0); @@ -2050,24 +1783,11 @@ int __init ap_module_init(void) if (rc) goto out_bus; - ap_work_queue = create_singlethread_workqueue("kapwork"); - if (!ap_work_queue) { - rc = -ENOMEM; - goto out_root; - } - - ap_query_configuration(); - if (ap_select_domain() == 0) - ap_scan_bus(NULL); - /* Setup the AP bus rescan timer. */ - init_timer(&ap_config_timer); - ap_config_timer.function = ap_config_timeout; - ap_config_timer.data = 0; - ap_config_timer.expires = jiffies + ap_config_time * HZ; - add_timer(&ap_config_timer); + setup_timer(&ap_config_timer, ap_config_timeout, 0); - /* Setup the high resultion poll timer. + /* + * Setup the high resultion poll timer. * If we are running under z/VM adjust polling to z/VM polling rate. */ if (MACHINE_IS_VM) @@ -2083,13 +1803,18 @@ int __init ap_module_init(void) goto out_work; } + rc = register_pm_notifier(&ap_power_notifier); + if (rc) + goto out_pm; + + queue_work(system_long_wq, &ap_scan_work); + return 0; +out_pm: + ap_poll_thread_stop(); out_work: - del_timer_sync(&ap_config_timer); hrtimer_cancel(&ap_poll_timer); - destroy_workqueue(ap_work_queue); -out_root: root_device_unregister(ap_root_device); out_bus: while (i--) @@ -2099,14 +1824,10 @@ out: unregister_reset_call(&ap_reset_call); if (ap_using_interrupts()) unregister_adapter_interrupt(&ap_airq); + kfree(ap_configuration); return rc; } -static int __ap_match_all(struct device *dev, void *data) -{ - return 1; -} - /** * ap_modules_exit(): The module termination code * @@ -2115,24 +1836,19 @@ static int __ap_match_all(struct device *dev, void *data) void ap_module_exit(void) { int i; - struct device *dev; ap_reset_domain(); ap_poll_thread_stop(); del_timer_sync(&ap_config_timer); hrtimer_cancel(&ap_poll_timer); - destroy_workqueue(ap_work_queue); tasklet_kill(&ap_tasklet); - while ((dev = bus_find_device(&ap_bus_type, NULL, NULL, - __ap_match_all))) - { - device_unregister(dev); - put_device(dev); - } + bus_for_each_dev(&ap_bus_type, NULL, NULL, __ap_devices_unregister); for (i = 0; ap_bus_attrs[i]; i++) bus_remove_file(&ap_bus_type, ap_bus_attrs[i]); + unregister_pm_notifier(&ap_power_notifier); root_device_unregister(ap_root_device); bus_unregister(&ap_bus_type); + kfree(ap_configuration); unregister_reset_call(&ap_reset_call); if (ap_using_interrupts()) unregister_adapter_interrupt(&ap_airq); diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 00468c8..6adcbdf 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -36,9 +36,6 @@ #define AP_CONFIG_TIME 30 /* Time in seconds between AP bus rescans. */ #define AP_POLL_TIME 1 /* Time in ticks between receive polls. */ -#define AP_POLL_IMMEDIATELY 1 /* continue running poll tasklet */ -#define AP_POLL_AFTER_TIMEOUT 2 /* run poll tasklet again after timout */ - extern int ap_domain_index; /** @@ -75,21 +72,9 @@ struct ap_queue_status { unsigned int pad2 : 16; } __packed; -#define AP_QUEUE_STATUS_INVALID \ - { 1, 1, 1, 0xF, 1, 0xFF, 0xFFFF } - -static inline -int ap_queue_status_invalid_test(struct ap_queue_status *status) -{ - struct ap_queue_status invalid = AP_QUEUE_STATUS_INVALID; - return !(memcmp(status, &invalid, sizeof(struct ap_queue_status))); -} -#define AP_MAX_BITS 31 static inline int ap_test_bit(unsigned int *ptr, unsigned int nr) { - if (nr > AP_MAX_BITS) - return 0; return (*ptr & (0x80000000u >> nr)) != 0; } @@ -132,19 +117,45 @@ static inline int ap_test_bit(unsigned int *ptr, unsigned int nr) #define AP_FUNC_APXA 6 /* - * AP reset flag states - */ -#define AP_RESET_IGNORE 0 /* request timeout will be ignored */ -#define AP_RESET_ARMED 1 /* request timeout timer is active */ -#define AP_RESET_DO 2 /* AP reset required */ -#define AP_RESET_IN_PROGRESS 3 /* AP reset in progress */ - -/* * AP interrupt states */ #define AP_INTR_DISABLED 0 /* AP interrupt disabled */ #define AP_INTR_ENABLED 1 /* AP interrupt enabled */ -#define AP_INTR_IN_PROGRESS 3 /* AP interrupt in progress */ + +/* + * AP device states + */ +enum ap_state { + AP_STATE_RESET_START, + AP_STATE_RESET_WAIT, + AP_STATE_SETIRQ_WAIT, + AP_STATE_IDLE, + AP_STATE_WORKING, + AP_STATE_QUEUE_FULL, + AP_STATE_SUSPEND_WAIT, + AP_STATE_BORKED, + NR_AP_STATES +}; + +/* + * AP device events + */ +enum ap_event { + AP_EVENT_POLL, + AP_EVENT_TIMEOUT, + NR_AP_EVENTS +}; + +/* + * AP wait behaviour + */ +enum ap_wait { + AP_WAIT_AGAIN, /* retry immediately */ + AP_WAIT_TIMEOUT, /* wait for timeout */ + AP_WAIT_INTERRUPT, /* wait for thin interrupt (if available) */ + AP_WAIT_NONE, /* no wait */ + NR_AP_WAIT +}; struct ap_device; struct ap_message; @@ -163,20 +174,22 @@ struct ap_driver { int ap_driver_register(struct ap_driver *, struct module *, char *); void ap_driver_unregister(struct ap_driver *); +typedef enum ap_wait (ap_func_t)(struct ap_device *ap_dev); + struct ap_device { struct device device; struct ap_driver *drv; /* Pointer to AP device driver. */ spinlock_t lock; /* Per device lock. */ struct list_head list; /* private list of all AP devices. */ + enum ap_state state; /* State of the AP device. */ + ap_qid_t qid; /* AP queue id. */ int queue_depth; /* AP queue depth.*/ int device_type; /* AP device type. */ int raw_hwtype; /* AP raw hardware type. */ unsigned int functions; /* AP device function bitfield. */ - int unregistered; /* marks AP device as unregistered */ struct timer_list timeout; /* Timer for request timeouts. */ - int reset; /* Reset required after req. timeout. */ int interrupt; /* indicate if interrupts are enabled */ int queue_count; /* # messages currently on AP queue. */ @@ -199,6 +212,7 @@ struct ap_message { unsigned long long psmid; /* Message id. */ void *message; /* Pointer to message buffer. */ size_t length; /* Message length. */ + int rc; /* Return code for this message */ void *private; /* ap driver private pointer. */ unsigned int special:1; /* Used for special commands. */ @@ -231,6 +245,7 @@ static inline void ap_init_message(struct ap_message *ap_msg) { ap_msg->psmid = 0; ap_msg->length = 0; + ap_msg->rc = 0; ap_msg->special = 0; ap_msg->receive = NULL; } diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 4eb4554..a9603eb 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -472,8 +472,7 @@ static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt) unsigned long long z1, z2, z3; int rc, copied; - if (crt->outputdatalength < crt->inputdatalength || - (crt->inputdatalength & 1)) + if (crt->outputdatalength < crt->inputdatalength) return -EINVAL; /* * As long as outputdatalength is big enough, we can set the diff --git a/drivers/s390/crypto/zcrypt_cca_key.h b/drivers/s390/crypto/zcrypt_cca_key.h index 1f42f10..ca0cdbe 100644 --- a/drivers/s390/crypto/zcrypt_cca_key.h +++ b/drivers/s390/crypto/zcrypt_cca_key.h @@ -291,7 +291,7 @@ static inline int zcrypt_type6_crt_key(struct ica_rsa_modexpo_crt *crt, memset(key, 0, sizeof(*key)); - short_len = crt->inputdatalength / 2; + short_len = (crt->inputdatalength + 1) / 2; long_len = short_len + 8; pad_len = -(3*long_len + 2*short_len) & 7; key_len = 3*long_len + 2*short_len + pad_len + crt->inputdatalength; diff --git a/drivers/s390/crypto/zcrypt_msgtype50.c b/drivers/s390/crypto/zcrypt_msgtype50.c index 334e282..71ceee9 100644 --- a/drivers/s390/crypto/zcrypt_msgtype50.c +++ b/drivers/s390/crypto/zcrypt_msgtype50.c @@ -248,7 +248,7 @@ static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_device *zdev, unsigned char *p, *q, *dp, *dq, *u, *inp; mod_len = crt->inputdatalength; - short_len = mod_len / 2; + short_len = (mod_len + 1) / 2; /* * CEX2A and CEX3A w/o FW update can handle requests up to @@ -395,10 +395,8 @@ static void zcrypt_cex2a_receive(struct ap_device *ap_dev, int length; /* Copy the reply message to the request message buffer. */ - if (IS_ERR(reply)) { - memcpy(msg->message, &error_reply, sizeof(error_reply)); - goto out; - } + if (!reply) + goto out; /* ap_msg->rc indicates the error */ t80h = reply->message; if (t80h->type == TYPE80_RSP_CODE) { if (ap_dev->device_type == AP_DEVICE_TYPE_CEX2A) @@ -449,10 +447,12 @@ static long zcrypt_cex2a_modexpo(struct zcrypt_device *zdev, init_completion(&work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&work); - if (rc == 0) - rc = convert_response(zdev, &ap_msg, mex->outputdata, - mex->outputdatalength); - else + if (rc == 0) { + rc = ap_msg.rc; + if (rc == 0) + rc = convert_response(zdev, &ap_msg, mex->outputdata, + mex->outputdatalength); + } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: @@ -493,10 +493,12 @@ static long zcrypt_cex2a_modexpo_crt(struct zcrypt_device *zdev, init_completion(&work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&work); - if (rc == 0) - rc = convert_response(zdev, &ap_msg, crt->outputdata, - crt->outputdatalength); - else + if (rc == 0) { + rc = ap_msg.rc; + if (rc == 0) + rc = convert_response(zdev, &ap_msg, crt->outputdata, + crt->outputdatalength); + } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c index 46b324c..7476221 100644 --- a/drivers/s390/crypto/zcrypt_msgtype6.c +++ b/drivers/s390/crypto/zcrypt_msgtype6.c @@ -829,10 +829,8 @@ static void zcrypt_msgtype6_receive(struct ap_device *ap_dev, int length; /* Copy the reply message to the request message buffer. */ - if (IS_ERR(reply)) { - memcpy(msg->message, &error_reply, sizeof(error_reply)); - goto out; - } + if (!reply) + goto out; /* ap_msg->rc indicates the error */ t86r = reply->message; if (t86r->hdr.type == TYPE86_RSP_CODE && t86r->cprbx.cprb_ver_id == 0x02) { @@ -880,10 +878,8 @@ static void zcrypt_msgtype6_receive_ep11(struct ap_device *ap_dev, int length; /* Copy the reply message to the request message buffer. */ - if (IS_ERR(reply)) { - memcpy(msg->message, &error_reply, sizeof(error_reply)); - goto out; - } + if (!reply) + goto out; /* ap_msg->rc indicates the error */ t86r = reply->message; if (t86r->hdr.type == TYPE86_RSP_CODE && t86r->cprbx.cprb_ver_id == 0x04) { @@ -935,10 +931,13 @@ static long zcrypt_msgtype6_modexpo(struct zcrypt_device *zdev, init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); - if (rc == 0) - rc = convert_response_ica(zdev, &ap_msg, mex->outputdata, - mex->outputdatalength); - else + if (rc == 0) { + rc = ap_msg.rc; + if (rc == 0) + rc = convert_response_ica(zdev, &ap_msg, + mex->outputdata, + mex->outputdatalength); + } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: @@ -976,10 +975,13 @@ static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_device *zdev, init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); - if (rc == 0) - rc = convert_response_ica(zdev, &ap_msg, crt->outputdata, - crt->outputdatalength); - else + if (rc == 0) { + rc = ap_msg.rc; + if (rc == 0) + rc = convert_response_ica(zdev, &ap_msg, + crt->outputdata, + crt->outputdatalength); + } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: @@ -1017,9 +1019,11 @@ static long zcrypt_msgtype6_send_cprb(struct zcrypt_device *zdev, init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); - if (rc == 0) - rc = convert_response_xcrb(zdev, &ap_msg, xcRB); - else + if (rc == 0) { + rc = ap_msg.rc; + if (rc == 0) + rc = convert_response_xcrb(zdev, &ap_msg, xcRB); + } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: @@ -1057,9 +1061,12 @@ static long zcrypt_msgtype6_send_ep11_cprb(struct zcrypt_device *zdev, init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); - if (rc == 0) - rc = convert_response_ep11_xcrb(zdev, &ap_msg, xcrb); - else /* Signal pending. */ + if (rc == 0) { + rc = ap_msg.rc; + if (rc == 0) + rc = convert_response_ep11_xcrb(zdev, &ap_msg, xcrb); + } else + /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: @@ -1096,9 +1103,11 @@ static long zcrypt_msgtype6_rng(struct zcrypt_device *zdev, init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); - if (rc == 0) - rc = convert_response_rng(zdev, &ap_msg, buffer); - else + if (rc == 0) { + rc = ap_msg.rc; + if (rc == 0) + rc = convert_response_rng(zdev, &ap_msg, buffer); + } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); kfree(ap_msg.message); diff --git a/drivers/s390/crypto/zcrypt_pcica.c b/drivers/s390/crypto/zcrypt_pcica.c deleted file mode 100644 index 7a743f4..0000000 --- a/drivers/s390/crypto/zcrypt_pcica.c +++ /dev/null @@ -1,420 +0,0 @@ -/* - * zcrypt 2.1.0 - * - * Copyright IBM Corp. 2001, 2006 - * Author(s): Robert Burroughs - * Eric Rossman (edrossma@us.ibm.com) - * - * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) - * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> - * Ralph Wuerthner <rwuerthn@de.ibm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#define KMSG_COMPONENT "zcrypt" -#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/err.h> -#include <linux/atomic.h> -#include <asm/uaccess.h> - -#include "ap_bus.h" -#include "zcrypt_api.h" -#include "zcrypt_error.h" -#include "zcrypt_pcica.h" - -#define PCICA_MIN_MOD_SIZE 1 /* 8 bits */ -#define PCICA_MAX_MOD_SIZE 256 /* 2048 bits */ - -#define PCICA_SPEED_RATING 2800 - -#define PCICA_MAX_MESSAGE_SIZE 0x3a0 /* sizeof(struct type4_lcr) */ -#define PCICA_MAX_RESPONSE_SIZE 0x110 /* max outputdatalength + type80_hdr */ - -#define PCICA_CLEANUP_TIME (15*HZ) - -static struct ap_device_id zcrypt_pcica_ids[] = { - { AP_DEVICE(AP_DEVICE_TYPE_PCICA) }, - { /* end of list */ }, -}; - -MODULE_DEVICE_TABLE(ap, zcrypt_pcica_ids); -MODULE_AUTHOR("IBM Corporation"); -MODULE_DESCRIPTION("PCICA Cryptographic Coprocessor device driver, " - "Copyright IBM Corp. 2001, 2006"); -MODULE_LICENSE("GPL"); - -static int zcrypt_pcica_probe(struct ap_device *ap_dev); -static void zcrypt_pcica_remove(struct ap_device *ap_dev); -static void zcrypt_pcica_receive(struct ap_device *, struct ap_message *, - struct ap_message *); - -static struct ap_driver zcrypt_pcica_driver = { - .probe = zcrypt_pcica_probe, - .remove = zcrypt_pcica_remove, - .ids = zcrypt_pcica_ids, - .request_timeout = PCICA_CLEANUP_TIME, -}; - -/** - * Convert a ICAMEX message to a type4 MEX message. - * - * @zdev: crypto device pointer - * @zreq: crypto request pointer - * @mex: pointer to user input data - * - * Returns 0 on success or -EFAULT. - */ -static int ICAMEX_msg_to_type4MEX_msg(struct zcrypt_device *zdev, - struct ap_message *ap_msg, - struct ica_rsa_modexpo *mex) -{ - unsigned char *modulus, *exponent, *message; - int mod_len; - - mod_len = mex->inputdatalength; - - if (mod_len <= 128) { - struct type4_sme *sme = ap_msg->message; - memset(sme, 0, sizeof(*sme)); - ap_msg->length = sizeof(*sme); - sme->header.msg_fmt = TYPE4_SME_FMT; - sme->header.msg_len = sizeof(*sme); - sme->header.msg_type_code = TYPE4_TYPE_CODE; - sme->header.request_code = TYPE4_REQU_CODE; - modulus = sme->modulus + sizeof(sme->modulus) - mod_len; - exponent = sme->exponent + sizeof(sme->exponent) - mod_len; - message = sme->message + sizeof(sme->message) - mod_len; - } else { - struct type4_lme *lme = ap_msg->message; - memset(lme, 0, sizeof(*lme)); - ap_msg->length = sizeof(*lme); - lme->header.msg_fmt = TYPE4_LME_FMT; - lme->header.msg_len = sizeof(*lme); - lme->header.msg_type_code = TYPE4_TYPE_CODE; - lme->header.request_code = TYPE4_REQU_CODE; - modulus = lme->modulus + sizeof(lme->modulus) - mod_len; - exponent = lme->exponent + sizeof(lme->exponent) - mod_len; - message = lme->message + sizeof(lme->message) - mod_len; - } - - if (copy_from_user(modulus, mex->n_modulus, mod_len) || - copy_from_user(exponent, mex->b_key, mod_len) || - copy_from_user(message, mex->inputdata, mod_len)) - return -EFAULT; - return 0; -} - -/** - * Convert a ICACRT message to a type4 CRT message. - * - * @zdev: crypto device pointer - * @zreq: crypto request pointer - * @crt: pointer to user input data - * - * Returns 0 on success or -EFAULT. - */ -static int ICACRT_msg_to_type4CRT_msg(struct zcrypt_device *zdev, - struct ap_message *ap_msg, - struct ica_rsa_modexpo_crt *crt) -{ - unsigned char *p, *q, *dp, *dq, *u, *inp; - int mod_len, short_len, long_len; - - mod_len = crt->inputdatalength; - short_len = mod_len / 2; - long_len = mod_len / 2 + 8; - - if (mod_len <= 128) { - struct type4_scr *scr = ap_msg->message; - memset(scr, 0, sizeof(*scr)); - ap_msg->length = sizeof(*scr); - scr->header.msg_type_code = TYPE4_TYPE_CODE; - scr->header.request_code = TYPE4_REQU_CODE; - scr->header.msg_fmt = TYPE4_SCR_FMT; - scr->header.msg_len = sizeof(*scr); - p = scr->p + sizeof(scr->p) - long_len; - q = scr->q + sizeof(scr->q) - short_len; - dp = scr->dp + sizeof(scr->dp) - long_len; - dq = scr->dq + sizeof(scr->dq) - short_len; - u = scr->u + sizeof(scr->u) - long_len; - inp = scr->message + sizeof(scr->message) - mod_len; - } else { - struct type4_lcr *lcr = ap_msg->message; - memset(lcr, 0, sizeof(*lcr)); - ap_msg->length = sizeof(*lcr); - lcr->header.msg_type_code = TYPE4_TYPE_CODE; - lcr->header.request_code = TYPE4_REQU_CODE; - lcr->header.msg_fmt = TYPE4_LCR_FMT; - lcr->header.msg_len = sizeof(*lcr); - p = lcr->p + sizeof(lcr->p) - long_len; - q = lcr->q + sizeof(lcr->q) - short_len; - dp = lcr->dp + sizeof(lcr->dp) - long_len; - dq = lcr->dq + sizeof(lcr->dq) - short_len; - u = lcr->u + sizeof(lcr->u) - long_len; - inp = lcr->message + sizeof(lcr->message) - mod_len; - } - - if (copy_from_user(p, crt->np_prime, long_len) || - copy_from_user(q, crt->nq_prime, short_len) || - copy_from_user(dp, crt->bp_key, long_len) || - copy_from_user(dq, crt->bq_key, short_len) || - copy_from_user(u, crt->u_mult_inv, long_len) || - copy_from_user(inp, crt->inputdata, mod_len)) - return -EFAULT; - return 0; -} - -/** - * Copy results from a type 84 reply message back to user space. - * - * @zdev: crypto device pointer - * @reply: reply AP message. - * @data: pointer to user output data - * @length: size of user output data - * - * Returns 0 on success or -EFAULT. - */ -static int convert_type84(struct zcrypt_device *zdev, - struct ap_message *reply, - char __user *outputdata, - unsigned int outputdatalength) -{ - struct type84_hdr *t84h = reply->message; - char *data; - - if (t84h->len < sizeof(*t84h) + outputdatalength) { - /* The result is too short, the PCICA card may not do that.. */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - zdev->ap_dev->qid); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", - zdev->ap_dev->qid, zdev->online, t84h->code); - return -EAGAIN; /* repeat the request on a different device. */ - } - BUG_ON(t84h->len > PCICA_MAX_RESPONSE_SIZE); - data = reply->message + t84h->len - outputdatalength; - if (copy_to_user(outputdata, data, outputdatalength)) - return -EFAULT; - return 0; -} - -static int convert_response(struct zcrypt_device *zdev, - struct ap_message *reply, - char __user *outputdata, - unsigned int outputdatalength) -{ - /* Response type byte is the second byte in the response. */ - switch (((unsigned char *) reply->message)[1]) { - case TYPE82_RSP_CODE: - case TYPE88_RSP_CODE: - return convert_error(zdev, reply); - case TYPE84_RSP_CODE: - return convert_type84(zdev, reply, - outputdata, outputdatalength); - default: /* Unknown response type, this should NEVER EVER happen */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - zdev->ap_dev->qid); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", - zdev->ap_dev->qid, zdev->online); - return -EAGAIN; /* repeat the request on a different device. */ - } -} - -/** - * This function is called from the AP bus code after a crypto request - * "msg" has finished with the reply message "reply". - * It is called from tasklet context. - * @ap_dev: pointer to the AP device - * @msg: pointer to the AP message - * @reply: pointer to the AP reply message - */ -static void zcrypt_pcica_receive(struct ap_device *ap_dev, - struct ap_message *msg, - struct ap_message *reply) -{ - static struct error_hdr error_reply = { - .type = TYPE82_RSP_CODE, - .reply_code = REP82_ERROR_MACHINE_FAILURE, - }; - struct type84_hdr *t84h; - int length; - - /* Copy the reply message to the request message buffer. */ - if (IS_ERR(reply)) { - memcpy(msg->message, &error_reply, sizeof(error_reply)); - goto out; - } - t84h = reply->message; - if (t84h->code == TYPE84_RSP_CODE) { - length = min(PCICA_MAX_RESPONSE_SIZE, (int) t84h->len); - memcpy(msg->message, reply->message, length); - } else - memcpy(msg->message, reply->message, sizeof error_reply); -out: - complete((struct completion *) msg->private); -} - -static atomic_t zcrypt_step = ATOMIC_INIT(0); - -/** - * The request distributor calls this function if it picked the PCICA - * device to handle a modexpo request. - * @zdev: pointer to zcrypt_device structure that identifies the - * PCICA device to the request distributor - * @mex: pointer to the modexpo request buffer - */ -static long zcrypt_pcica_modexpo(struct zcrypt_device *zdev, - struct ica_rsa_modexpo *mex) -{ - struct ap_message ap_msg; - struct completion work; - int rc; - - ap_init_message(&ap_msg); - ap_msg.message = kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL); - if (!ap_msg.message) - return -ENOMEM; - ap_msg.receive = zcrypt_pcica_receive; - ap_msg.psmid = (((unsigned long long) current->pid) << 32) + - atomic_inc_return(&zcrypt_step); - ap_msg.private = &work; - rc = ICAMEX_msg_to_type4MEX_msg(zdev, &ap_msg, mex); - if (rc) - goto out_free; - init_completion(&work); - ap_queue_message(zdev->ap_dev, &ap_msg); - rc = wait_for_completion_interruptible(&work); - if (rc == 0) - rc = convert_response(zdev, &ap_msg, mex->outputdata, - mex->outputdatalength); - else - /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); -out_free: - kfree(ap_msg.message); - return rc; -} - -/** - * The request distributor calls this function if it picked the PCICA - * device to handle a modexpo_crt request. - * @zdev: pointer to zcrypt_device structure that identifies the - * PCICA device to the request distributor - * @crt: pointer to the modexpoc_crt request buffer - */ -static long zcrypt_pcica_modexpo_crt(struct zcrypt_device *zdev, - struct ica_rsa_modexpo_crt *crt) -{ - struct ap_message ap_msg; - struct completion work; - int rc; - - ap_init_message(&ap_msg); - ap_msg.message = kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL); - if (!ap_msg.message) - return -ENOMEM; - ap_msg.receive = zcrypt_pcica_receive; - ap_msg.psmid = (((unsigned long long) current->pid) << 32) + - atomic_inc_return(&zcrypt_step); - ap_msg.private = &work; - rc = ICACRT_msg_to_type4CRT_msg(zdev, &ap_msg, crt); - if (rc) - goto out_free; - init_completion(&work); - ap_queue_message(zdev->ap_dev, &ap_msg); - rc = wait_for_completion_interruptible(&work); - if (rc == 0) - rc = convert_response(zdev, &ap_msg, crt->outputdata, - crt->outputdatalength); - else - /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); -out_free: - kfree(ap_msg.message); - return rc; -} - -/** - * The crypto operations for a PCICA card. - */ -static struct zcrypt_ops zcrypt_pcica_ops = { - .rsa_modexpo = zcrypt_pcica_modexpo, - .rsa_modexpo_crt = zcrypt_pcica_modexpo_crt, -}; - -/** - * Probe function for PCICA cards. It always accepts the AP device - * since the bus_match already checked the hardware type. - * @ap_dev: pointer to the AP device. - */ -static int zcrypt_pcica_probe(struct ap_device *ap_dev) -{ - struct zcrypt_device *zdev; - int rc; - - zdev = zcrypt_device_alloc(PCICA_MAX_RESPONSE_SIZE); - if (!zdev) - return -ENOMEM; - zdev->ap_dev = ap_dev; - zdev->ops = &zcrypt_pcica_ops; - zdev->online = 1; - zdev->user_space_type = ZCRYPT_PCICA; - zdev->type_string = "PCICA"; - zdev->min_mod_size = PCICA_MIN_MOD_SIZE; - zdev->max_mod_size = PCICA_MAX_MOD_SIZE; - zdev->speed_rating = PCICA_SPEED_RATING; - zdev->max_exp_bit_length = PCICA_MAX_MOD_SIZE; - ap_dev->reply = &zdev->reply; - ap_dev->private = zdev; - rc = zcrypt_device_register(zdev); - if (rc) - goto out_free; - return 0; - -out_free: - ap_dev->private = NULL; - zcrypt_device_free(zdev); - return rc; -} - -/** - * This is called to remove the extended PCICA driver information - * if an AP device is removed. - */ -static void zcrypt_pcica_remove(struct ap_device *ap_dev) -{ - struct zcrypt_device *zdev = ap_dev->private; - - zcrypt_device_unregister(zdev); -} - -int __init zcrypt_pcica_init(void) -{ - return ap_driver_register(&zcrypt_pcica_driver, THIS_MODULE, "pcica"); -} - -void zcrypt_pcica_exit(void) -{ - ap_driver_unregister(&zcrypt_pcica_driver); -} - -module_init(zcrypt_pcica_init); -module_exit(zcrypt_pcica_exit); diff --git a/drivers/s390/crypto/zcrypt_pcica.h b/drivers/s390/crypto/zcrypt_pcica.h deleted file mode 100644 index 9a59155..0000000 --- a/drivers/s390/crypto/zcrypt_pcica.h +++ /dev/null @@ -1,115 +0,0 @@ -/* - * zcrypt 2.1.0 - * - * Copyright IBM Corp. 2001, 2006 - * Author(s): Robert Burroughs - * Eric Rossman (edrossma@us.ibm.com) - * - * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) - * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef _ZCRYPT_PCICA_H_ -#define _ZCRYPT_PCICA_H_ - -/** - * The type 4 message family is associated with a PCICA card. - * - * The four members of the family are described below. - * - * Note that all unsigned char arrays are right-justified and left-padded - * with zeroes. - * - * Note that all reserved fields must be zeroes. - */ -struct type4_hdr { - unsigned char reserved1; - unsigned char msg_type_code; /* 0x04 */ - unsigned short msg_len; - unsigned char request_code; /* 0x40 */ - unsigned char msg_fmt; - unsigned short reserved2; -} __attribute__((packed)); - -#define TYPE4_TYPE_CODE 0x04 -#define TYPE4_REQU_CODE 0x40 - -#define TYPE4_SME_FMT 0x00 -#define TYPE4_LME_FMT 0x10 -#define TYPE4_SCR_FMT 0x40 -#define TYPE4_LCR_FMT 0x50 - -/* Mod-Exp, with a small modulus */ -struct type4_sme { - struct type4_hdr header; - unsigned char message[128]; - unsigned char exponent[128]; - unsigned char modulus[128]; -} __attribute__((packed)); - -/* Mod-Exp, with a large modulus */ -struct type4_lme { - struct type4_hdr header; - unsigned char message[256]; - unsigned char exponent[256]; - unsigned char modulus[256]; -} __attribute__((packed)); - -/* CRT, with a small modulus */ -struct type4_scr { - struct type4_hdr header; - unsigned char message[128]; - unsigned char dp[72]; - unsigned char dq[64]; - unsigned char p[72]; - unsigned char q[64]; - unsigned char u[72]; -} __attribute__((packed)); - -/* CRT, with a large modulus */ -struct type4_lcr { - struct type4_hdr header; - unsigned char message[256]; - unsigned char dp[136]; - unsigned char dq[128]; - unsigned char p[136]; - unsigned char q[128]; - unsigned char u[136]; -} __attribute__((packed)); - -/** - * The type 84 response family is associated with a PCICA card. - * - * Note that all unsigned char arrays are right-justified and left-padded - * with zeroes. - * - * Note that all reserved fields must be zeroes. - */ - -struct type84_hdr { - unsigned char reserved1; - unsigned char code; - unsigned short len; - unsigned char reserved2[4]; -} __attribute__((packed)); - -#define TYPE84_RSP_CODE 0x84 - -int zcrypt_pcica_init(void); -void zcrypt_pcica_exit(void); - -#endif /* _ZCRYPT_PCICA_H_ */ diff --git a/drivers/s390/crypto/zcrypt_pcicc.c b/drivers/s390/crypto/zcrypt_pcicc.c deleted file mode 100644 index 9f18876..0000000 --- a/drivers/s390/crypto/zcrypt_pcicc.c +++ /dev/null @@ -1,627 +0,0 @@ -/* - * zcrypt 2.1.0 - * - * Copyright IBM Corp. 2001, 2006 - * Author(s): Robert Burroughs - * Eric Rossman (edrossma@us.ibm.com) - * - * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) - * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> - * Ralph Wuerthner <rwuerthn@de.ibm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#define KMSG_COMPONENT "zcrypt" -#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/gfp.h> -#include <linux/err.h> -#include <linux/atomic.h> -#include <asm/uaccess.h> - -#include "ap_bus.h" -#include "zcrypt_api.h" -#include "zcrypt_error.h" -#include "zcrypt_pcicc.h" -#include "zcrypt_cca_key.h" - -#define PCICC_MIN_MOD_SIZE 64 /* 512 bits */ -#define PCICC_MAX_MOD_SIZE_OLD 128 /* 1024 bits */ -#define PCICC_MAX_MOD_SIZE 256 /* 2048 bits */ - -/* - * PCICC cards need a speed rating of 0. This keeps them at the end of - * the zcrypt device list (see zcrypt_api.c). PCICC cards are only - * used if no other cards are present because they are slow and can only - * cope with PKCS12 padded requests. The logic is queer. PKCS11 padded - * requests are rejected. The modexpo function encrypts PKCS12 padded data - * and decrypts any non-PKCS12 padded data (except PKCS11) in the assumption - * that it's encrypted PKCS12 data. The modexpo_crt function always decrypts - * the data in the assumption that its PKCS12 encrypted data. - */ -#define PCICC_SPEED_RATING 0 - -#define PCICC_MAX_MESSAGE_SIZE 0x710 /* max size type6 v1 crt message */ -#define PCICC_MAX_RESPONSE_SIZE 0x710 /* max size type86 v1 reply */ - -#define PCICC_CLEANUP_TIME (15*HZ) - -static struct ap_device_id zcrypt_pcicc_ids[] = { - { AP_DEVICE(AP_DEVICE_TYPE_PCICC) }, - { /* end of list */ }, -}; - -MODULE_DEVICE_TABLE(ap, zcrypt_pcicc_ids); -MODULE_AUTHOR("IBM Corporation"); -MODULE_DESCRIPTION("PCICC Cryptographic Coprocessor device driver, " - "Copyright IBM Corp. 2001, 2006"); -MODULE_LICENSE("GPL"); - -static int zcrypt_pcicc_probe(struct ap_device *ap_dev); -static void zcrypt_pcicc_remove(struct ap_device *ap_dev); -static void zcrypt_pcicc_receive(struct ap_device *, struct ap_message *, - struct ap_message *); - -static struct ap_driver zcrypt_pcicc_driver = { - .probe = zcrypt_pcicc_probe, - .remove = zcrypt_pcicc_remove, - .ids = zcrypt_pcicc_ids, - .request_timeout = PCICC_CLEANUP_TIME, -}; - -/** - * The following is used to initialize the CPRB passed to the PCICC card - * in a type6 message. The 3 fields that must be filled in at execution - * time are req_parml, rpl_parml and usage_domain. Note that all three - * fields are *little*-endian. Actually, everything about this interface - * is ascii/little-endian, since the device has 'Intel inside'. - * - * The CPRB is followed immediately by the parm block. - * The parm block contains: - * - function code ('PD' 0x5044 or 'PK' 0x504B) - * - rule block (0x0A00 'PKCS-1.2' or 0x0A00 'ZERO-PAD') - * - VUD block - */ -static struct CPRB static_cprb = { - .cprb_len = cpu_to_le16(0x0070), - .cprb_ver_id = 0x41, - .func_id = {0x54,0x32}, - .checkpoint_flag= 0x01, - .svr_namel = cpu_to_le16(0x0008), - .svr_name = {'I','C','S','F',' ',' ',' ',' '} -}; - -/** - * Check the message for PKCS11 padding. - */ -static inline int is_PKCS11_padded(unsigned char *buffer, int length) -{ - int i; - if ((buffer[0] != 0x00) || (buffer[1] != 0x01)) - return 0; - for (i = 2; i < length; i++) - if (buffer[i] != 0xFF) - break; - if (i < 10 || i == length) - return 0; - if (buffer[i] != 0x00) - return 0; - return 1; -} - -/** - * Check the message for PKCS12 padding. - */ -static inline int is_PKCS12_padded(unsigned char *buffer, int length) -{ - int i; - if ((buffer[0] != 0x00) || (buffer[1] != 0x02)) - return 0; - for (i = 2; i < length; i++) - if (buffer[i] == 0x00) - break; - if ((i < 10) || (i == length)) - return 0; - if (buffer[i] != 0x00) - return 0; - return 1; -} - -/** - * Convert a ICAMEX message to a type6 MEX message. - * - * @zdev: crypto device pointer - * @zreq: crypto request pointer - * @mex: pointer to user input data - * - * Returns 0 on success or -EFAULT. - */ -static int ICAMEX_msg_to_type6MEX_msg(struct zcrypt_device *zdev, - struct ap_message *ap_msg, - struct ica_rsa_modexpo *mex) -{ - static struct type6_hdr static_type6_hdr = { - .type = 0x06, - .offset1 = 0x00000058, - .agent_id = {0x01,0x00,0x43,0x43,0x41,0x2D,0x41,0x50, - 0x50,0x4C,0x20,0x20,0x20,0x01,0x01,0x01}, - .function_code = {'P','K'}, - }; - static struct function_and_rules_block static_pke_function_and_rules ={ - .function_code = {'P','K'}, - .ulen = cpu_to_le16(10), - .only_rule = {'P','K','C','S','-','1','.','2'} - }; - struct { - struct type6_hdr hdr; - struct CPRB cprb; - struct function_and_rules_block fr; - unsigned short length; - char text[0]; - } __attribute__((packed)) *msg = ap_msg->message; - int vud_len, pad_len, size; - - /* VUD.ciphertext */ - if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength)) - return -EFAULT; - - if (is_PKCS11_padded(msg->text, mex->inputdatalength)) - return -EINVAL; - - /* static message header and f&r */ - msg->hdr = static_type6_hdr; - msg->fr = static_pke_function_and_rules; - - if (is_PKCS12_padded(msg->text, mex->inputdatalength)) { - /* strip the padding and adjust the data length */ - pad_len = strnlen(msg->text + 2, mex->inputdatalength - 2) + 3; - if (pad_len <= 9 || pad_len >= mex->inputdatalength) - return -ENODEV; - vud_len = mex->inputdatalength - pad_len; - memmove(msg->text, msg->text + pad_len, vud_len); - msg->length = cpu_to_le16(vud_len + 2); - - /* Set up key after the variable length text. */ - size = zcrypt_type6_mex_key_en(mex, msg->text + vud_len, 0); - if (size < 0) - return size; - size += sizeof(*msg) + vud_len; /* total size of msg */ - } else { - vud_len = mex->inputdatalength; - msg->length = cpu_to_le16(2 + vud_len); - - msg->hdr.function_code[1] = 'D'; - msg->fr.function_code[1] = 'D'; - - /* Set up key after the variable length text. */ - size = zcrypt_type6_mex_key_de(mex, msg->text + vud_len, 0); - if (size < 0) - return size; - size += sizeof(*msg) + vud_len; /* total size of msg */ - } - - /* message header, cprb and f&r */ - msg->hdr.ToCardLen1 = (size - sizeof(msg->hdr) + 3) & -4; - msg->hdr.FromCardLen1 = PCICC_MAX_RESPONSE_SIZE - sizeof(msg->hdr); - - msg->cprb = static_cprb; - msg->cprb.usage_domain[0]= AP_QID_QUEUE(zdev->ap_dev->qid); - msg->cprb.req_parml = cpu_to_le16(size - sizeof(msg->hdr) - - sizeof(msg->cprb)); - msg->cprb.rpl_parml = cpu_to_le16(msg->hdr.FromCardLen1); - - ap_msg->length = (size + 3) & -4; - return 0; -} - -/** - * Convert a ICACRT message to a type6 CRT message. - * - * @zdev: crypto device pointer - * @zreq: crypto request pointer - * @crt: pointer to user input data - * - * Returns 0 on success or -EFAULT. - */ -static int ICACRT_msg_to_type6CRT_msg(struct zcrypt_device *zdev, - struct ap_message *ap_msg, - struct ica_rsa_modexpo_crt *crt) -{ - static struct type6_hdr static_type6_hdr = { - .type = 0x06, - .offset1 = 0x00000058, - .agent_id = {0x01,0x00,0x43,0x43,0x41,0x2D,0x41,0x50, - 0x50,0x4C,0x20,0x20,0x20,0x01,0x01,0x01}, - .function_code = {'P','D'}, - }; - static struct function_and_rules_block static_pkd_function_and_rules ={ - .function_code = {'P','D'}, - .ulen = cpu_to_le16(10), - .only_rule = {'P','K','C','S','-','1','.','2'} - }; - struct { - struct type6_hdr hdr; - struct CPRB cprb; - struct function_and_rules_block fr; - unsigned short length; - char text[0]; - } __attribute__((packed)) *msg = ap_msg->message; - int size; - - /* VUD.ciphertext */ - msg->length = cpu_to_le16(2 + crt->inputdatalength); - if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength)) - return -EFAULT; - - if (is_PKCS11_padded(msg->text, crt->inputdatalength)) - return -EINVAL; - - /* Set up key after the variable length text. */ - size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 0); - if (size < 0) - return size; - size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */ - - /* message header, cprb and f&r */ - msg->hdr = static_type6_hdr; - msg->hdr.ToCardLen1 = (size - sizeof(msg->hdr) + 3) & -4; - msg->hdr.FromCardLen1 = PCICC_MAX_RESPONSE_SIZE - sizeof(msg->hdr); - - msg->cprb = static_cprb; - msg->cprb.usage_domain[0] = AP_QID_QUEUE(zdev->ap_dev->qid); - msg->cprb.req_parml = msg->cprb.rpl_parml = - cpu_to_le16(size - sizeof(msg->hdr) - sizeof(msg->cprb)); - - msg->fr = static_pkd_function_and_rules; - - ap_msg->length = (size + 3) & -4; - return 0; -} - -/** - * Copy results from a type 86 reply message back to user space. - * - * @zdev: crypto device pointer - * @reply: reply AP message. - * @data: pointer to user output data - * @length: size of user output data - * - * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. - */ -struct type86_reply { - struct type86_hdr hdr; - struct type86_fmt2_ext fmt2; - struct CPRB cprb; - unsigned char pad[4]; /* 4 byte function code/rules block ? */ - unsigned short length; - char text[0]; -} __attribute__((packed)); - -static int convert_type86(struct zcrypt_device *zdev, - struct ap_message *reply, - char __user *outputdata, - unsigned int outputdatalength) -{ - static unsigned char static_pad[] = { - 0x00,0x02, - 0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD, - 0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57, - 0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B, - 0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39, - 0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5, - 0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D, - 0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB, - 0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F, - 0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9, - 0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45, - 0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9, - 0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F, - 0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD, - 0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D, - 0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD, - 0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9, - 0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B, - 0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B, - 0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B, - 0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD, - 0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7, - 0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1, - 0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3, - 0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23, - 0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55, - 0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43, - 0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F, - 0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F, - 0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5, - 0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD, - 0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41, - 0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09 - }; - struct type86_reply *msg = reply->message; - unsigned short service_rc, service_rs; - unsigned int reply_len, pad_len; - char *data; - - service_rc = le16_to_cpu(msg->cprb.ccp_rtcode); - if (unlikely(service_rc != 0)) { - service_rs = le16_to_cpu(msg->cprb.ccp_rscode); - if (service_rc == 8 && service_rs == 66) - return -EINVAL; - if (service_rc == 8 && service_rs == 65) - return -EINVAL; - if (service_rc == 8 && service_rs == 770) { - zdev->max_mod_size = PCICC_MAX_MOD_SIZE_OLD; - return -EAGAIN; - } - if (service_rc == 8 && service_rs == 783) { - zdev->max_mod_size = PCICC_MAX_MOD_SIZE_OLD; - return -EAGAIN; - } - if (service_rc == 8 && service_rs == 72) - return -EINVAL; - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - zdev->ap_dev->qid); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", - zdev->ap_dev->qid, zdev->online, - msg->hdr.reply_code); - return -EAGAIN; /* repeat the request on a different device. */ - } - data = msg->text; - reply_len = le16_to_cpu(msg->length) - 2; - if (reply_len > outputdatalength) - return -EINVAL; - /* - * For all encipher requests, the length of the ciphertext (reply_len) - * will always equal the modulus length. For MEX decipher requests - * the output needs to get padded. Minimum pad size is 10. - * - * Currently, the cases where padding will be added is for: - * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support - * ZERO-PAD and CRT is only supported for PKD requests) - * - PCICC, always - */ - pad_len = outputdatalength - reply_len; - if (pad_len > 0) { - if (pad_len < 10) - return -EINVAL; - /* 'restore' padding left in the PCICC/PCIXCC card. */ - if (copy_to_user(outputdata, static_pad, pad_len - 1)) - return -EFAULT; - if (put_user(0, outputdata + pad_len - 1)) - return -EFAULT; - } - /* Copy the crypto response to user space. */ - if (copy_to_user(outputdata + pad_len, data, reply_len)) - return -EFAULT; - return 0; -} - -static int convert_response(struct zcrypt_device *zdev, - struct ap_message *reply, - char __user *outputdata, - unsigned int outputdatalength) -{ - struct type86_reply *msg = reply->message; - - /* Response type byte is the second byte in the response. */ - switch (msg->hdr.type) { - case TYPE82_RSP_CODE: - case TYPE88_RSP_CODE: - return convert_error(zdev, reply); - case TYPE86_RSP_CODE: - if (msg->hdr.reply_code) - return convert_error(zdev, reply); - if (msg->cprb.cprb_ver_id == 0x01) - return convert_type86(zdev, reply, - outputdata, outputdatalength); - /* no break, incorrect cprb version is an unknown response */ - default: /* Unknown response type, this should NEVER EVER happen */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - zdev->ap_dev->qid); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", - zdev->ap_dev->qid, zdev->online); - return -EAGAIN; /* repeat the request on a different device. */ - } -} - -/** - * This function is called from the AP bus code after a crypto request - * "msg" has finished with the reply message "reply". - * It is called from tasklet context. - * @ap_dev: pointer to the AP device - * @msg: pointer to the AP message - * @reply: pointer to the AP reply message - */ -static void zcrypt_pcicc_receive(struct ap_device *ap_dev, - struct ap_message *msg, - struct ap_message *reply) -{ - static struct error_hdr error_reply = { - .type = TYPE82_RSP_CODE, - .reply_code = REP82_ERROR_MACHINE_FAILURE, - }; - struct type86_reply *t86r; - int length; - - /* Copy the reply message to the request message buffer. */ - if (IS_ERR(reply)) { - memcpy(msg->message, &error_reply, sizeof(error_reply)); - goto out; - } - t86r = reply->message; - if (t86r->hdr.type == TYPE86_RSP_CODE && - t86r->cprb.cprb_ver_id == 0x01) { - length = sizeof(struct type86_reply) + t86r->length - 2; - length = min(PCICC_MAX_RESPONSE_SIZE, length); - memcpy(msg->message, reply->message, length); - } else - memcpy(msg->message, reply->message, sizeof error_reply); -out: - complete((struct completion *) msg->private); -} - -static atomic_t zcrypt_step = ATOMIC_INIT(0); - -/** - * The request distributor calls this function if it picked the PCICC - * device to handle a modexpo request. - * @zdev: pointer to zcrypt_device structure that identifies the - * PCICC device to the request distributor - * @mex: pointer to the modexpo request buffer - */ -static long zcrypt_pcicc_modexpo(struct zcrypt_device *zdev, - struct ica_rsa_modexpo *mex) -{ - struct ap_message ap_msg; - struct completion work; - int rc; - - ap_init_message(&ap_msg); - ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); - if (!ap_msg.message) - return -ENOMEM; - ap_msg.receive = zcrypt_pcicc_receive; - ap_msg.length = PAGE_SIZE; - ap_msg.psmid = (((unsigned long long) current->pid) << 32) + - atomic_inc_return(&zcrypt_step); - ap_msg.private = &work; - rc = ICAMEX_msg_to_type6MEX_msg(zdev, &ap_msg, mex); - if (rc) - goto out_free; - init_completion(&work); - ap_queue_message(zdev->ap_dev, &ap_msg); - rc = wait_for_completion_interruptible(&work); - if (rc == 0) - rc = convert_response(zdev, &ap_msg, mex->outputdata, - mex->outputdatalength); - else - /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); -out_free: - free_page((unsigned long) ap_msg.message); - return rc; -} - -/** - * The request distributor calls this function if it picked the PCICC - * device to handle a modexpo_crt request. - * @zdev: pointer to zcrypt_device structure that identifies the - * PCICC device to the request distributor - * @crt: pointer to the modexpoc_crt request buffer - */ -static long zcrypt_pcicc_modexpo_crt(struct zcrypt_device *zdev, - struct ica_rsa_modexpo_crt *crt) -{ - struct ap_message ap_msg; - struct completion work; - int rc; - - ap_init_message(&ap_msg); - ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); - if (!ap_msg.message) - return -ENOMEM; - ap_msg.receive = zcrypt_pcicc_receive; - ap_msg.length = PAGE_SIZE; - ap_msg.psmid = (((unsigned long long) current->pid) << 32) + - atomic_inc_return(&zcrypt_step); - ap_msg.private = &work; - rc = ICACRT_msg_to_type6CRT_msg(zdev, &ap_msg, crt); - if (rc) - goto out_free; - init_completion(&work); - ap_queue_message(zdev->ap_dev, &ap_msg); - rc = wait_for_completion_interruptible(&work); - if (rc == 0) - rc = convert_response(zdev, &ap_msg, crt->outputdata, - crt->outputdatalength); - else - /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); -out_free: - free_page((unsigned long) ap_msg.message); - return rc; -} - -/** - * The crypto operations for a PCICC card. - */ -static struct zcrypt_ops zcrypt_pcicc_ops = { - .rsa_modexpo = zcrypt_pcicc_modexpo, - .rsa_modexpo_crt = zcrypt_pcicc_modexpo_crt, -}; - -/** - * Probe function for PCICC cards. It always accepts the AP device - * since the bus_match already checked the hardware type. - * @ap_dev: pointer to the AP device. - */ -static int zcrypt_pcicc_probe(struct ap_device *ap_dev) -{ - struct zcrypt_device *zdev; - int rc; - - zdev = zcrypt_device_alloc(PCICC_MAX_RESPONSE_SIZE); - if (!zdev) - return -ENOMEM; - zdev->ap_dev = ap_dev; - zdev->ops = &zcrypt_pcicc_ops; - zdev->online = 1; - zdev->user_space_type = ZCRYPT_PCICC; - zdev->type_string = "PCICC"; - zdev->min_mod_size = PCICC_MIN_MOD_SIZE; - zdev->max_mod_size = PCICC_MAX_MOD_SIZE; - zdev->speed_rating = PCICC_SPEED_RATING; - zdev->max_exp_bit_length = PCICC_MAX_MOD_SIZE; - ap_dev->reply = &zdev->reply; - ap_dev->private = zdev; - rc = zcrypt_device_register(zdev); - if (rc) - goto out_free; - return 0; - - out_free: - ap_dev->private = NULL; - zcrypt_device_free(zdev); - return rc; -} - -/** - * This is called to remove the extended PCICC driver information - * if an AP device is removed. - */ -static void zcrypt_pcicc_remove(struct ap_device *ap_dev) -{ - struct zcrypt_device *zdev = ap_dev->private; - - zcrypt_device_unregister(zdev); -} - -int __init zcrypt_pcicc_init(void) -{ - return ap_driver_register(&zcrypt_pcicc_driver, THIS_MODULE, "pcicc"); -} - -void zcrypt_pcicc_exit(void) -{ - ap_driver_unregister(&zcrypt_pcicc_driver); -} - -module_init(zcrypt_pcicc_init); -module_exit(zcrypt_pcicc_exit); diff --git a/drivers/s390/crypto/zcrypt_pcicc.h b/drivers/s390/crypto/zcrypt_pcicc.h deleted file mode 100644 index 7fe27e1..0000000 --- a/drivers/s390/crypto/zcrypt_pcicc.h +++ /dev/null @@ -1,174 +0,0 @@ -/* - * zcrypt 2.1.0 - * - * Copyright IBM Corp. 2001, 2006 - * Author(s): Robert Burroughs - * Eric Rossman (edrossma@us.ibm.com) - * - * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) - * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef _ZCRYPT_PCICC_H_ -#define _ZCRYPT_PCICC_H_ - -/** - * The type 6 message family is associated with PCICC or PCIXCC cards. - * - * It contains a message header followed by a CPRB, both of which - * are described below. - * - * Note that all reserved fields must be zeroes. - */ -struct type6_hdr { - unsigned char reserved1; /* 0x00 */ - unsigned char type; /* 0x06 */ - unsigned char reserved2[2]; /* 0x0000 */ - unsigned char right[4]; /* 0x00000000 */ - unsigned char reserved3[2]; /* 0x0000 */ - unsigned char reserved4[2]; /* 0x0000 */ - unsigned char apfs[4]; /* 0x00000000 */ - unsigned int offset1; /* 0x00000058 (offset to CPRB) */ - unsigned int offset2; /* 0x00000000 */ - unsigned int offset3; /* 0x00000000 */ - unsigned int offset4; /* 0x00000000 */ - unsigned char agent_id[16]; /* PCICC: */ - /* 0x0100 */ - /* 0x4343412d4150504c202020 */ - /* 0x010101 */ - /* PCIXCC: */ - /* 0x4341000000000000 */ - /* 0x0000000000000000 */ - unsigned char rqid[2]; /* rqid. internal to 603 */ - unsigned char reserved5[2]; /* 0x0000 */ - unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */ - unsigned char reserved6[2]; /* 0x0000 */ - unsigned int ToCardLen1; /* (request CPRB len + 3) & -4 */ - unsigned int ToCardLen2; /* db len 0x00000000 for PKD */ - unsigned int ToCardLen3; /* 0x00000000 */ - unsigned int ToCardLen4; /* 0x00000000 */ - unsigned int FromCardLen1; /* response buffer length */ - unsigned int FromCardLen2; /* db len 0x00000000 for PKD */ - unsigned int FromCardLen3; /* 0x00000000 */ - unsigned int FromCardLen4; /* 0x00000000 */ -} __attribute__((packed)); - -/** - * CPRB - * Note that all shorts, ints and longs are little-endian. - * All pointer fields are 32-bits long, and mean nothing - * - * A request CPRB is followed by a request_parameter_block. - * - * The request (or reply) parameter block is organized thus: - * function code - * VUD block - * key block - */ -struct CPRB { - unsigned short cprb_len; /* CPRB length */ - unsigned char cprb_ver_id; /* CPRB version id. */ - unsigned char pad_000; /* Alignment pad byte. */ - unsigned char srpi_rtcode[4]; /* SRPI return code LELONG */ - unsigned char srpi_verb; /* SRPI verb type */ - unsigned char flags; /* flags */ - unsigned char func_id[2]; /* function id */ - unsigned char checkpoint_flag; /* */ - unsigned char resv2; /* reserved */ - unsigned short req_parml; /* request parameter buffer */ - /* length 16-bit little endian */ - unsigned char req_parmp[4]; /* request parameter buffer * - * pointer (means nothing: the * - * parameter buffer follows * - * the CPRB). */ - unsigned char req_datal[4]; /* request data buffer */ - /* length ULELONG */ - unsigned char req_datap[4]; /* request data buffer */ - /* pointer */ - unsigned short rpl_parml; /* reply parameter buffer */ - /* length 16-bit little endian */ - unsigned char pad_001[2]; /* Alignment pad bytes. ULESHORT */ - unsigned char rpl_parmp[4]; /* reply parameter buffer * - * pointer (means nothing: the * - * parameter buffer follows * - * the CPRB). */ - unsigned char rpl_datal[4]; /* reply data buffer len ULELONG */ - unsigned char rpl_datap[4]; /* reply data buffer */ - /* pointer */ - unsigned short ccp_rscode; /* server reason code ULESHORT */ - unsigned short ccp_rtcode; /* server return code ULESHORT */ - unsigned char repd_parml[2]; /* replied parameter len ULESHORT*/ - unsigned char mac_data_len[2]; /* Mac Data Length ULESHORT */ - unsigned char repd_datal[4]; /* replied data length ULELONG */ - unsigned char req_pc[2]; /* PC identifier */ - unsigned char res_origin[8]; /* resource origin */ - unsigned char mac_value[8]; /* Mac Value */ - unsigned char logon_id[8]; /* Logon Identifier */ - unsigned char usage_domain[2]; /* cdx */ - unsigned char resv3[18]; /* reserved for requestor */ - unsigned short svr_namel; /* server name length ULESHORT */ - unsigned char svr_name[8]; /* server name */ -} __attribute__((packed)); - -/** - * The type 86 message family is associated with PCICC and PCIXCC cards. - * - * It contains a message header followed by a CPRB. The CPRB is - * the same as the request CPRB, which is described above. - * - * If format is 1, an error condition exists and no data beyond - * the 8-byte message header is of interest. - * - * The non-error message is shown below. - * - * Note that all reserved fields must be zeroes. - */ -struct type86_hdr { - unsigned char reserved1; /* 0x00 */ - unsigned char type; /* 0x86 */ - unsigned char format; /* 0x01 (error) or 0x02 (ok) */ - unsigned char reserved2; /* 0x00 */ - unsigned char reply_code; /* reply code (see above) */ - unsigned char reserved3[3]; /* 0x000000 */ -} __attribute__((packed)); - -#define TYPE86_RSP_CODE 0x86 -#define TYPE86_FMT2 0x02 - -struct type86_fmt2_ext { - unsigned char reserved[4]; /* 0x00000000 */ - unsigned char apfs[4]; /* final status */ - unsigned int count1; /* length of CPRB + parameters */ - unsigned int offset1; /* offset to CPRB */ - unsigned int count2; /* 0x00000000 */ - unsigned int offset2; /* db offset 0x00000000 for PKD */ - unsigned int count3; /* 0x00000000 */ - unsigned int offset3; /* 0x00000000 */ - unsigned int count4; /* 0x00000000 */ - unsigned int offset4; /* 0x00000000 */ -} __attribute__((packed)); - -struct function_and_rules_block { - unsigned char function_code[2]; - unsigned short ulen; - unsigned char only_rule[8]; -} __attribute__((packed)); - -int zcrypt_pcicc_init(void); -void zcrypt_pcicc_exit(void); - -#endif /* _ZCRYPT_PCICC_H_ */ diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index e9fae30..b2a1a81 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -28,6 +28,7 @@ #include <linux/io.h> #include <linux/kvm_para.h> #include <linux/notifier.h> +#include <asm/diag.h> #include <asm/setup.h> #include <asm/irq.h> #include <asm/cio.h> @@ -366,9 +367,9 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, kfree(thinint_area); } -static inline long do_kvm_notify(struct subchannel_id schid, - unsigned long queue_index, - long cookie) +static inline long __do_kvm_notify(struct subchannel_id schid, + unsigned long queue_index, + long cookie) { register unsigned long __nr asm("1") = KVM_S390_VIRTIO_CCW_NOTIFY; register struct subchannel_id __schid asm("2") = schid; @@ -383,6 +384,14 @@ static inline long do_kvm_notify(struct subchannel_id schid, return __rc; } +static inline long do_kvm_notify(struct subchannel_id schid, + unsigned long queue_index, + long cookie) +{ + diag_stat_inc(DIAG_STAT_X500); + return __do_kvm_notify(schid, queue_index, cookie); +} + static bool virtio_ccw_kvm_notify(struct virtqueue *vq) { struct virtio_ccw_vq_info *info = vq->priv; diff --git a/drivers/watchdog/diag288_wdt.c b/drivers/watchdog/diag288_wdt.c index a9a5210..3db9d0e 100644 --- a/drivers/watchdog/diag288_wdt.c +++ b/drivers/watchdog/diag288_wdt.c @@ -29,6 +29,7 @@ #include <linux/watchdog.h> #include <linux/suspend.h> #include <asm/ebcdic.h> +#include <asm/diag.h> #include <linux/io.h> #include <linux/uaccess.h> @@ -94,12 +95,14 @@ static int __diag288(unsigned int func, unsigned int timeout, static int __diag288_vm(unsigned int func, unsigned int timeout, char *cmd, size_t len) { + diag_stat_inc(DIAG_STAT_X288); return __diag288(func, timeout, virt_to_phys(cmd), len); } static int __diag288_lpar(unsigned int func, unsigned int timeout, unsigned long action) { + diag_stat_inc(DIAG_STAT_X288); return __diag288(func, timeout, action, 0); } @@ -141,6 +144,7 @@ static int wdt_stop(struct watchdog_device *dev) { int ret; + diag_stat_inc(DIAG_STAT_X288); ret = __diag288(WDT_FUNC_CANCEL, 0, 0, 0); return ret; } diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index e2d46ad..b029d42 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -754,7 +754,7 @@ static inline void clear_soft_dirty(struct vm_area_struct *vma, if (pte_present(ptent)) { ptent = pte_wrprotect(ptent); - ptent = pte_clear_flags(ptent, _PAGE_SOFT_DIRTY); + ptent = pte_clear_soft_dirty(ptent); } else if (is_swap_pte(ptent)) { ptent = pte_swp_clear_soft_dirty(ptent); } @@ -768,7 +768,7 @@ static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma, pmd_t pmd = *pmdp; pmd = pmd_wrprotect(pmd); - pmd = pmd_clear_flags(pmd, _PAGE_SOFT_DIRTY); + pmd = pmd_clear_soft_dirty(pmd); if (vma->vm_flags & VM_SOFTDIRTY) vma->vm_flags &= ~VM_SOFTDIRTY; diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 3eabbbb..14b0ff32 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -505,6 +505,16 @@ static inline pmd_t pmd_mksoft_dirty(pmd_t pmd) return pmd; } +static inline pte_t pte_clear_soft_dirty(pte_t pte) +{ + return pte; +} + +static inline pmd_t pmd_clear_soft_dirty(pmd_t pmd) +{ + return pmd; +} + static inline pte_t pte_swp_mksoft_dirty(pte_t pte) { return pte; diff --git a/include/linux/compiler.h b/include/linux/compiler.h index fe81743..52a459f 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -56,7 +56,7 @@ extern void __chk_io_ptr(const volatile void __iomem *); #include <linux/compiler-gcc.h> #endif -#ifdef CC_USING_HOTPATCH +#if defined(CC_USING_HOTPATCH) && !defined(__CHECKER__) #define notrace __attribute__((hotpatch(0,0))) #else #define notrace __attribute__((no_instrument_function)) |
