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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-21 12:41:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-21 12:41:17 -0700 |
| commit | e60b9a0346ee08af4715ee5b2d82f705fbe6e309 (patch) | |
| tree | 886e1be2a283806e1dc940b7379a5a6e4683a97b | |
| parent | 9daeaa370526df1c19eba4780247bb7155541e38 (diff) | |
| parent | a7475afd530e6bf81c9025b0134dd1c7c6f1a219 (diff) | |
| download | op-kernel-dev-e60b9a0346ee08af4715ee5b2d82f705fbe6e309.zip op-kernel-dev-e60b9a0346ee08af4715ee5b2d82f705fbe6e309.tar.gz | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"Just a random collection of bug-fixes and cleanups, nothing new in
this merge request."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (46 commits)
s390/ap: Fix wrong or missing comments
s390/ap: move receive callback to message struct
s390/dasd: re-prioritize partition detection message
s390/qeth: reshuffle initialization
s390/qeth: cleanup drv attr usage
s390/claw: cleanup drv attr usage
s390/lcs: cleanup drv attr usage
s390/ctc: cleanup drv attr usage
s390/ccwgroup: remove ccwgroup_create_from_string
s390/qeth: stop using struct ccwgroup driver for discipline callbacks
s390/qeth: switch to ccwgroup_create_dev
s390/claw: switch to ccwgroup_create_dev
s390/lcs: switch to ccwgroup_create_dev
s390/ctcm: switch to ccwgroup_create_dev
s390/ccwgroup: exploit ccwdev_by_dev_id
s390/ccwgroup: introduce ccwgroup_create_dev
s390: fix race on TIF_MCCK_PENDING
s390/barrier: make use of fast-bcr facility
s390/barrier: cleanup barrier functions
s390/claw: remove "eieio" calls
...
54 files changed, 592 insertions, 1127 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 9015060..b42f286 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -217,7 +217,7 @@ config COMPAT def_bool y prompt "Kernel support for 31 bit emulation" depends on 64BIT - select COMPAT_BINFMT_ELF + select COMPAT_BINFMT_ELF if BINFMT_ELF select ARCH_WANT_OLD_COMPAT_IPC help Select this option if you want to enable your system kernel to @@ -234,6 +234,25 @@ config KEYS_COMPAT config AUDIT_ARCH def_bool y +config HAVE_MARCH_Z900_FEATURES + def_bool n + +config HAVE_MARCH_Z990_FEATURES + def_bool n + select HAVE_MARCH_Z900_FEATURES + +config HAVE_MARCH_Z9_109_FEATURES + def_bool n + select HAVE_MARCH_Z990_FEATURES + +config HAVE_MARCH_Z10_FEATURES + def_bool n + select HAVE_MARCH_Z9_109_FEATURES + +config HAVE_MARCH_Z196_FEATURES + def_bool n + select HAVE_MARCH_Z10_FEATURES + comment "Code generation options" choice @@ -249,6 +268,7 @@ config MARCH_G5 config MARCH_Z900 bool "IBM zSeries model z800 and z900" + select HAVE_MARCH_Z900_FEATURES if 64BIT help Select this to enable optimizations for model z800/z900 (2064 and 2066 series). This will enable some optimizations that are not @@ -256,6 +276,7 @@ config MARCH_Z900 config MARCH_Z990 bool "IBM zSeries model z890 and z990" + select HAVE_MARCH_Z990_FEATURES if 64BIT help Select this to enable optimizations for model z890/z990 (2084 and 2086 series). The kernel will be slightly faster but will not work @@ -263,6 +284,7 @@ config MARCH_Z990 config MARCH_Z9_109 bool "IBM System z9" + select HAVE_MARCH_Z9_109_FEATURES if 64BIT help Select this to enable optimizations for IBM System z9 (2094 and 2096 series). The kernel will be slightly faster but will not work @@ -270,6 +292,7 @@ config MARCH_Z9_109 config MARCH_Z10 bool "IBM System z10" + select HAVE_MARCH_Z10_FEATURES if 64BIT help Select this to enable optimizations for IBM System z10 (2097 and 2098 series). The kernel will be slightly faster but will not work @@ -277,6 +300,7 @@ config MARCH_Z10 config MARCH_Z196 bool "IBM zEnterprise 114 and 196" + select HAVE_MARCH_Z196_FEATURES if 64BIT help Select this to enable optimizations for IBM zEnterprise 114 and 196 (2818 and 2817 series). The kernel will be slightly faster but will @@ -406,33 +430,6 @@ config CHSC_SCH comment "Misc" -config IPL - def_bool y - prompt "Builtin IPL record support" - help - If you want to use the produced kernel to IPL directly from a - device, you have to merge a bootsector specific to the device - into the first bytes of the kernel. You will have to select the - IPL device. - -choice - prompt "IPL method generated into head.S" - depends on IPL - default IPL_VM - help - Select "tape" if you want to IPL the image from a Tape. - - Select "vm_reader" if you are running under VM/ESA and want - to IPL the image from the emulated card reader. - -config IPL_TAPE - bool "tape" - -config IPL_VM - bool "vm_reader" - -endchoice - source "fs/Kconfig.binfmt" config FORCE_MAX_ZONEORDER @@ -569,7 +566,7 @@ config KEXEC config CRASH_DUMP bool "kernel crash dumps" - depends on 64BIT + depends on 64BIT && SMP select KEXEC help Generate crash dump after being started by kexec. diff --git a/arch/s390/boot/.gitignore b/arch/s390/boot/.gitignore new file mode 100644 index 0000000..017d591 --- /dev/null +++ b/arch/s390/boot/.gitignore @@ -0,0 +1,2 @@ +image +bzImage diff --git a/arch/s390/boot/compressed/.gitignore b/arch/s390/boot/compressed/.gitignore new file mode 100644 index 0000000..ae06b9b --- /dev/null +++ b/arch/s390/boot/compressed/.gitignore @@ -0,0 +1,3 @@ +sizes.h +vmlinux +vmlinux.lds diff --git a/arch/s390/defconfig b/arch/s390/defconfig index 1957a9d..37d2bf2 100644 --- a/arch/s390/defconfig +++ b/arch/s390/defconfig @@ -155,7 +155,6 @@ CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_CAMELLIA=m CONFIG_CRYPTO_CAST5=m CONFIG_CRYPTO_CAST6=m -CONFIG_CRYPTO_DES=m CONFIG_CRYPTO_FCRYPT=m CONFIG_CRYPTO_KHAZAD=m CONFIG_CRYPTO_SALSA20=m diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index 451273a..10a5088 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -11,25 +11,28 @@ * Force strict CPU ordering. * And yes, this is required on UP too when we're talking * to devices. - * - * This is very similar to the ppc eieio/sync instruction in that is - * does a checkpoint syncronisation & makes sure that - * all memory ops have completed wrt other CPU's ( see 7-15 POP DJB ). */ -#define eieio() asm volatile("bcr 15,0" : : : "memory") -#define SYNC_OTHER_CORES(x) eieio() -#define mb() eieio() -#define rmb() eieio() -#define wmb() eieio() -#define read_barrier_depends() do { } while(0) -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#define smp_read_barrier_depends() read_barrier_depends() -#define smp_mb__before_clear_bit() smp_mb() -#define smp_mb__after_clear_bit() smp_mb() +static inline void mb(void) +{ +#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES + /* Fast-BCR without checkpoint synchronization */ + asm volatile("bcr 14,0" : : : "memory"); +#else + asm volatile("bcr 15,0" : : : "memory"); +#endif +} + +#define rmb() mb() +#define wmb() mb() +#define read_barrier_depends() do { } while(0) +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() +#define smp_read_barrier_depends() read_barrier_depends() +#define smp_mb__before_clear_bit() smp_mb() +#define smp_mb__after_clear_bit() smp_mb() -#define set_mb(var, value) do { var = value; mb(); } while (0) +#define set_mb(var, value) do { var = value; mb(); } while (0) #endif /* __ASM_BARRIER_H */ diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h index f2ea2c5..f2ef34f 100644 --- a/arch/s390/include/asm/ccwgroup.h +++ b/arch/s390/include/asm/ccwgroup.h @@ -29,9 +29,7 @@ struct ccwgroup_device { /** * struct ccwgroup_driver - driver for ccw group devices - * @max_slaves: maximum number of slave devices - * @driver_id: unique id - * @probe: function called on probe + * @setup: function called during device creation to setup the device * @remove: function called on remove * @set_online: function called when device is set online * @set_offline: function called when device is set offline @@ -44,10 +42,7 @@ struct ccwgroup_device { * @driver: embedded driver structure */ struct ccwgroup_driver { - int max_slaves; - unsigned long driver_id; - - int (*probe) (struct ccwgroup_device *); + int (*setup) (struct ccwgroup_device *); void (*remove) (struct ccwgroup_device *); int (*set_online) (struct ccwgroup_device *); int (*set_offline) (struct ccwgroup_device *); @@ -63,9 +58,8 @@ struct ccwgroup_driver { extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver); extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver); -int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, - struct ccw_driver *cdrv, int num_devices, - const char *buf); +int ccwgroup_create_dev(struct device *root, struct ccwgroup_driver *gdrv, + int num_devices, const char *buf); extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev); extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev); diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h index b7ff6af..27216d3 100644 --- a/arch/s390/include/asm/io.h +++ b/arch/s390/include/asm/io.h @@ -38,11 +38,8 @@ static inline void * phys_to_virt(unsigned long address) return (void *) address; } -/* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#define xlate_dev_mem_ptr(p) __va(p) +void *xlate_dev_mem_ptr(unsigned long phys); +void unxlate_dev_mem_ptr(unsigned long phys, void *addr); /* * Convert a virtual cached pointer to an uncached pointer diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h index d75c8e7..f039d86 100644 --- a/arch/s390/include/asm/qdio.h +++ b/arch/s390/include/asm/qdio.h @@ -258,11 +258,6 @@ struct slsb { u8 val[QDIO_MAX_BUFFERS_PER_Q]; } __attribute__ ((packed, aligned(256))); -#define CHSC_AC2_MULTI_BUFFER_AVAILABLE 0x0080 -#define CHSC_AC2_MULTI_BUFFER_ENABLED 0x0040 -#define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010 -#define CHSC_AC2_DATA_DIV_ENABLED 0x0002 - /** * struct qdio_outbuf_state - SBAL related asynchronous operation information * (for communication with upper layer programs) @@ -293,6 +288,8 @@ struct qdio_outbuf_state { #define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */ #define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */ +#define CHSC_AC2_MULTI_BUFFER_AVAILABLE 0x0080 +#define CHSC_AC2_MULTI_BUFFER_ENABLED 0x0040 #define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010 #define CHSC_AC2_DATA_DIV_ENABLED 0x0002 @@ -328,11 +325,13 @@ typedef void qdio_handler_t(struct ccw_device *, unsigned int, int, int, int, unsigned long); /* qdio errors reported to the upper-layer program */ -#define QDIO_ERROR_SIGA_TARGET 0x02 -#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10 -#define QDIO_ERROR_SIGA_BUSY 0x20 -#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40 -#define QDIO_ERROR_SLSB_STATE 0x80 +#define QDIO_ERROR_ACTIVATE 0x0001 +#define QDIO_ERROR_GET_BUF_STATE 0x0002 +#define QDIO_ERROR_SET_BUF_STATE 0x0004 +#define QDIO_ERROR_SLSB_STATE 0x0100 + +#define QDIO_ERROR_FATAL 0x00ff +#define QDIO_ERROR_TEMPORARY 0xff00 /* for qdio_cleanup */ #define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01 diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index b21e46e..7244e1f 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -82,7 +82,6 @@ extern unsigned int user_mode; #define MACHINE_FLAG_LPAR (1UL << 12) #define MACHINE_FLAG_SPP (1UL << 13) #define MACHINE_FLAG_TOPOLOGY (1UL << 14) -#define MACHINE_FLAG_STCKF (1UL << 15) #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) @@ -101,7 +100,6 @@ extern unsigned int user_mode; #define MACHINE_HAS_PFMF (0) #define MACHINE_HAS_SPP (0) #define MACHINE_HAS_TOPOLOGY (0) -#define MACHINE_HAS_STCKF (0) #else /* __s390x__ */ #define MACHINE_HAS_IEEE (1) #define MACHINE_HAS_CSP (1) @@ -113,7 +111,6 @@ extern unsigned int user_mode; #define MACHINE_HAS_PFMF (S390_lowcore.machine_flags & MACHINE_FLAG_PFMF) #define MACHINE_HAS_SPP (S390_lowcore.machine_flags & MACHINE_FLAG_SPP) #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) -#define MACHINE_HAS_STCKF (S390_lowcore.machine_flags & MACHINE_FLAG_STCKF) #endif /* __s390x__ */ #define ZFCPDUMP_HSA_SIZE (32UL<<20) diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index a730381..003b04e 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -95,7 +95,6 @@ static inline struct thread_info *current_thread_info(void) #define TIF_SYSCALL_AUDIT 9 /* syscall auditing active */ #define TIF_SECCOMP 10 /* secure computing */ #define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */ -#define TIF_SIE 12 /* guest execution active */ #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_31BIT 17 /* 32bit process */ @@ -114,7 +113,6 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) #define _TIF_SECCOMP (1<<TIF_SECCOMP) #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) -#define _TIF_SIE (1<<TIF_SIE) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) #define _TIF_31BIT (1<<TIF_31BIT) #define _TIF_SINGLE_STEP (1<<TIF_SINGLE_STEP) diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h index c447a27..239ece9 100644 --- a/arch/s390/include/asm/timex.h +++ b/arch/s390/include/asm/timex.h @@ -73,11 +73,15 @@ static inline void local_tick_enable(unsigned long long comp) typedef unsigned long long cycles_t; -static inline unsigned long long get_clock (void) +static inline unsigned long long get_clock(void) { unsigned long long clk; +#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES + asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc"); +#else asm volatile("stck %0" : "=Q" (clk) : : "cc"); +#endif return clk; } @@ -86,17 +90,6 @@ static inline void get_clock_ext(char *clk) asm volatile("stcke %0" : "=Q" (*clk) : : "cc"); } -static inline unsigned long long get_clock_fast(void) -{ - unsigned long long clk; - - if (MACHINE_HAS_STCKF) - asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc"); - else - clk = get_clock(); - return clk; -} - static inline unsigned long long get_clock_xt(void) { unsigned char clk[16]; diff --git a/arch/s390/kernel/.gitignore b/arch/s390/kernel/.gitignore new file mode 100644 index 0000000..c5f676c --- /dev/null +++ b/arch/s390/kernel/.gitignore @@ -0,0 +1 @@ +vmlinux.lds diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index 28040fd..377c096 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -437,13 +437,6 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) sp = current->sas_ss_sp + current->sas_ss_size; } - /* This is the legacy signal stack switching. */ - else if (!user_mode(regs) && - !(ka->sa.sa_flags & SA_RESTORER) && - ka->sa.sa_restorer) { - sp = (unsigned long) ka->sa.sa_restorer; - } - return (void __user *)((sp - frame_size) & -8ul); } diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 9475e68..d84181f 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -374,8 +374,6 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS; if (test_facility(40)) S390_lowcore.machine_flags |= MACHINE_FLAG_SPP; - if (test_facility(25)) - S390_lowcore.machine_flags |= MACHINE_FLAG_STCKF; #endif } diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 74ee563..1ae93b5 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -145,22 +145,23 @@ STACK_SIZE = 1 << STACK_SHIFT * gpr2 = prev */ ENTRY(__switch_to) + stm %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task + st %r15,__THREAD_ksp(%r2) # store kernel stack of prev l %r4,__THREAD_info(%r2) # get thread_info of prev l %r5,__THREAD_info(%r3) # get thread_info of next + lr %r15,%r5 + ahi %r15,STACK_SIZE # end of kernel stack of next + st %r3,__LC_CURRENT # store task struct of next + st %r5,__LC_THREAD_INFO # store thread info of next + st %r15,__LC_KERNEL_STACK # store end of kernel stack + lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4 + mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next + l %r15,__THREAD_ksp(%r3) # load kernel stack of next tm __TI_flags+3(%r4),_TIF_MCCK_PENDING # machine check pending? jz 0f ni __TI_flags+3(%r4),255-_TIF_MCCK_PENDING # clear flag in prev oi __TI_flags+3(%r5),_TIF_MCCK_PENDING # set it in next -0: stm %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task - st %r15,__THREAD_ksp(%r2) # store kernel stack of prev - l %r15,__THREAD_ksp(%r3) # load kernel stack of next - lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4 - lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task - st %r3,__LC_CURRENT # store task struct of next - mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next - st %r5,__LC_THREAD_INFO # store thread info of next - ahi %r5,STACK_SIZE # end of kernel stack of next - st %r5,__LC_KERNEL_STACK # store end of kernel stack +0: lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task br %r14 __critical_start: diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 4e1c292..229fe1d 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -81,16 +81,14 @@ _TIF_EXIT_SIE = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING) .macro HANDLE_SIE_INTERCEPT scratch #if defined(CONFIG_KVM) || defined(CONFIG_KVM_MODULE) - tm __TI_flags+6(%r12),_TIF_SIE>>8 - jz .+42 - tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_SPP - jz .+8 - .insn s,0xb2800000,BASED(.Lhost_id) # set host id + tmhh %r8,0x0001 # interrupting from user ? + jnz .+42 lgr \scratch,%r9 slg \scratch,BASED(.Lsie_loop) clg \scratch,BASED(.Lsie_length) - jhe .+10 + jhe .+22 lg %r9,BASED(.Lsie_loop) + SPP BASED(.Lhost_id) # set host id #endif .endm @@ -148,6 +146,14 @@ _TIF_EXIT_SIE = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING) ssm __LC_RETURN_PSW .endm + .macro STCK savearea +#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES + .insn s,0xb27c0000,\savearea # store clock fast +#else + .insn s,0xb2050000,\savearea # store clock +#endif + .endm + .section .kprobes.text, "ax" /* @@ -158,22 +164,23 @@ _TIF_EXIT_SIE = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING) * gpr2 = prev */ ENTRY(__switch_to) + stmg %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task + stg %r15,__THREAD_ksp(%r2) # store kernel stack of prev lg %r4,__THREAD_info(%r2) # get thread_info of prev lg %r5,__THREAD_info(%r3) # get thread_info of next + lgr %r15,%r5 + aghi %r15,STACK_SIZE # end of kernel stack of next + stg %r3,__LC_CURRENT # store task struct of next + stg %r5,__LC_THREAD_INFO # store thread info of next + stg %r15,__LC_KERNEL_STACK # store end of kernel stack + 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 + lg %r15,__THREAD_ksp(%r3) # load kernel stack of next tm __TI_flags+7(%r4),_TIF_MCCK_PENDING # machine check pending? jz 0f ni __TI_flags+7(%r4),255-_TIF_MCCK_PENDING # clear flag in prev oi __TI_flags+7(%r5),_TIF_MCCK_PENDING # set it in next -0: stmg %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task - stg %r15,__THREAD_ksp(%r2) # store kernel stack of prev - lg %r15,__THREAD_ksp(%r3) # load kernel stack of next - lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4 - lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task - stg %r3,__LC_CURRENT # store task struct of next - mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next - stg %r5,__LC_THREAD_INFO # store thread info of next - aghi %r5,STACK_SIZE # end of kernel stack of next - stg %r5,__LC_KERNEL_STACK # store end of kernel stack +0: lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task br %r14 __critical_start: @@ -458,7 +465,7 @@ pgm_svcper: * IO interrupt handler routine */ ENTRY(io_int_handler) - stck __LC_INT_CLOCK + STCK __LC_INT_CLOCK stpt __LC_ASYNC_ENTER_TIMER stmg %r8,%r15,__LC_SAVE_AREA_ASYNC lg %r10,__LC_LAST_BREAK @@ -604,7 +611,7 @@ io_notify_resume: * External interrupt handler routine */ ENTRY(ext_int_handler) - stck __LC_INT_CLOCK + STCK __LC_INT_CLOCK stpt __LC_ASYNC_ENTER_TIMER stmg %r8,%r15,__LC_SAVE_AREA_ASYNC lg %r10,__LC_LAST_BREAK @@ -622,6 +629,7 @@ ext_skip: mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC stmg %r8,%r9,__PT_PSW(%r11) TRACE_IRQS_OFF + xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) lghi %r1,4096 lgr %r2,%r11 # pass pointer to pt_regs llgf %r3,__LC_EXT_CPU_ADDR # get cpu address + interruption code @@ -638,7 +646,7 @@ ENTRY(psw_idle) larl %r1,psw_idle_lpsw+4 stg %r1,__SF_EMPTY+8(%r15) larl %r1,.Lvtimer_max - stck __IDLE_ENTER(%r2) + STCK __IDLE_ENTER(%r2) ltr %r5,%r5 stpt __VQ_IDLE_ENTER(%r3) jz psw_idle_lpsw @@ -654,7 +662,7 @@ __critical_end: * Machine check handler routines */ ENTRY(mcck_int_handler) - stck __LC_MCCK_CLOCK + STCK __LC_MCCK_CLOCK la %r1,4095 # revalidate r1 spt __LC_CPU_TIMER_SAVE_AREA-4095(%r1) # revalidate cpu timer lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs @@ -967,7 +975,6 @@ ENTRY(sie64a) xc __SF_EMPTY+16(8,%r15),__SF_EMPTY+16(%r15) # host id == 0 lmg %r0,%r13,0(%r3) # load guest gprs 0-13 lg %r14,__LC_THREAD_INFO # pointer thread_info struct - oi __TI_flags+6(%r14),_TIF_SIE>>8 sie_loop: lg %r14,__LC_THREAD_INFO # pointer thread_info struct tm __TI_flags+7(%r14),_TIF_EXIT_SIE @@ -985,7 +992,6 @@ sie_done: lg %r14,__LC_THREAD_INFO # pointer thread_info struct sie_exit: lctlg %c1,%c1,__LC_USER_ASCE # load primary asce - ni __TI_flags+6(%r14),255-(_TIF_SIE>>8) 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 @@ -994,7 +1000,6 @@ sie_exit: sie_fault: lctlg %c1,%c1,__LC_USER_ASCE # load primary asce lg %r14,__LC_THREAD_INFO # pointer thread_info struct - ni __TI_flags+6(%r14),255-(_TIF_SIE>>8) 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 diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index adccd90..4939d15 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -34,125 +34,7 @@ #endif __HEAD -#ifndef CONFIG_IPL - .org 0 - .long 0x00080000,0x80000000+startup # Just a restart PSW -#else -#ifdef CONFIG_IPL_TAPE -#define IPL_BS 1024 - .org 0 - .long 0x00080000,0x80000000+iplstart # The first 24 bytes are loaded - .long 0x27000000,0x60000001 # by ipl to addresses 0-23. - .long 0x02000000,0x20000000+IPL_BS # (a PSW and two CCWs). - .long 0x00000000,0x00000000 # external old psw - .long 0x00000000,0x00000000 # svc old psw - .long 0x00000000,0x00000000 # program check old psw - .long 0x00000000,0x00000000 # machine check old psw - .long 0x00000000,0x00000000 # io old psw - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x000a0000,0x00000058 # external new psw - .long 0x000a0000,0x00000060 # svc new psw - .long 0x000a0000,0x00000068 # program check new psw - .long 0x000a0000,0x00000070 # machine check new psw - .long 0x00080000,0x80000000+.Lioint # io new psw - .org 0x100 -# -# subroutine for loading from tape -# Parameters: -# R1 = device number -# R2 = load address -.Lloader: - st %r14,.Lldret - la %r3,.Lorbread # r3 = address of orb - la %r5,.Lirb # r5 = address of irb - st %r2,.Lccwread+4 # initialize CCW data addresses - lctl %c6,%c6,.Lcr6 - slr %r2,%r2 -.Lldlp: - la %r6,3 # 3 retries -.Lssch: - ssch 0(%r3) # load chunk of IPL_BS bytes - bnz .Llderr -.Lw4end: - bas %r14,.Lwait4io - tm 8(%r5),0x82 # do we have a problem ? - bnz .Lrecov - slr %r7,%r7 - icm %r7,3,10(%r5) # get residual count - lcr %r7,%r7 - la %r7,IPL_BS(%r7) # IPL_BS-residual=#bytes read - ar %r2,%r7 # add to total size - tm 8(%r5),0x01 # found a tape mark ? - bnz .Ldone - l %r0,.Lccwread+4 # update CCW data addresses - ar %r0,%r7 - st %r0,.Lccwread+4 - b .Lldlp -.Ldone: - l %r14,.Lldret - br %r14 # r2 contains the total size -.Lrecov: - bas %r14,.Lsense # do the sensing - bct %r6,.Lssch # dec. retry count & branch - b .Llderr -# -# Sense subroutine -# -.Lsense: - st %r14,.Lsnsret - la %r7,.Lorbsense - ssch 0(%r7) # start sense command - bnz .Llderr - bas %r14,.Lwait4io - l %r14,.Lsnsret - tm 8(%r5),0x82 # do we have a problem ? - bnz .Llderr - br %r14 -# -# Wait for interrupt subroutine -# -.Lwait4io: - lpsw .Lwaitpsw -.Lioint: - c %r1,0xb8 # compare subchannel number - bne .Lwait4io - tsch 0(%r5) - slr %r0,%r0 - tm 8(%r5),0x82 # do we have a problem ? - bnz .Lwtexit - tm 8(%r5),0x04 # got device end ? - bz .Lwait4io -.Lwtexit: - br %r14 -.Llderr: - lpsw .Lcrash - - .align 8 -.Lorbread: - .long 0x00000000,0x0080ff00,.Lccwread - .align 8 -.Lorbsense: - .long 0x00000000,0x0080ff00,.Lccwsense - .align 8 -.Lccwread: - .long 0x02200000+IPL_BS,0x00000000 -.Lccwsense: - .long 0x04200001,0x00000000 -.Lwaitpsw: - .long 0x020a0000,0x80000000+.Lioint - -.Lirb: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 -.Lcr6: .long 0xff000000 - .align 8 -.Lcrash:.long 0x000a0000,0x00000000 -.Lldret:.long 0 -.Lsnsret: .long 0 -#endif /* CONFIG_IPL_TAPE */ - -#ifdef CONFIG_IPL_VM #define IPL_BS 0x730 .org 0 .long 0x00080000,0x80000000+iplstart # The first 24 bytes are loaded @@ -256,7 +138,6 @@ __HEAD .long 0x02600050,0x00000000 .endr .long 0x02200050,0x00000000 -#endif /* CONFIG_IPL_VM */ iplstart: lh %r1,0xb8 # test if subchannel number @@ -325,7 +206,6 @@ iplstart: clc 0(3,%r2),.L_eof bz .Lagain2 -#ifdef CONFIG_IPL_VM # # reset files in VM reader # @@ -358,7 +238,6 @@ iplstart: .long 0x00080000,0x80000000+.Lrdrint .Lrdrwaitpsw: .long 0x020a0000,0x80000000+.Lrdrint -#endif # # everything loaded, go for it @@ -376,8 +255,6 @@ iplstart: .L_eof: .long 0xc5d6c600 /* C'EOF' */ .L_hdr: .long 0xc8c4d900 /* C'HDR' */ -#endif /* CONFIG_IPL */ - # # SALIPL loader support. Based on a patch by Rob van der Heij. # This entry point is called directly from the SALIPL loader and diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index f7582b2..8a4e2b7 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -235,13 +235,6 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) sp = current->sas_ss_sp + current->sas_ss_size; } - /* This is the legacy signal stack switching. */ - else if (!user_mode(regs) && - !(ka->sa.sa_flags & SA_RESTORER) && - ka->sa.sa_restorer) { - sp = (unsigned long) ka->sa.sa_restorer; - } - return (void __user *)((sp - frame_size) & -8ul); } @@ -414,15 +407,6 @@ void do_signal(struct pt_regs *regs) struct k_sigaction ka; sigset_t *oldset; - /* - * We want the common case to go fast, which - * is why we may in certain cases get here from - * kernel mode. Just return without doing anything - * if so. - */ - if (!user_mode(regs)) - return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) oldset = ¤t->saved_sigmask; else diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 1f77227..e505458 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -226,6 +226,8 @@ out: return -ENOMEM; } +#ifdef CONFIG_HOTPLUG_CPU + static void pcpu_free_lowcore(struct pcpu *pcpu) { pcpu_sigp_retry(pcpu, sigp_set_prefix, 0); @@ -247,6 +249,8 @@ static void pcpu_free_lowcore(struct pcpu *pcpu) } } +#endif /* CONFIG_HOTPLUG_CPU */ + static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu) { struct _lowcore *lc = pcpu->lowcore; diff --git a/arch/s390/kernel/vdso32/.gitignore b/arch/s390/kernel/vdso32/.gitignore new file mode 100644 index 0000000..e45fba9 --- /dev/null +++ b/arch/s390/kernel/vdso32/.gitignore @@ -0,0 +1 @@ +vdso32.lds diff --git a/arch/s390/kernel/vdso64/.gitignore b/arch/s390/kernel/vdso64/.gitignore new file mode 100644 index 0000000..3fd18cf --- /dev/null +++ b/arch/s390/kernel/vdso64/.gitignore @@ -0,0 +1 @@ +vdso64.lds diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 46ef3fd..72cec9e 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -294,7 +294,7 @@ static inline int do_exception(struct pt_regs *regs, int access) down_read(&mm->mmap_sem); #ifdef CONFIG_PGSTE - if (test_tsk_thread_flag(current, TIF_SIE) && S390_lowcore.gmap) { + if ((current->flags & PF_VCPU) && S390_lowcore.gmap) { address = __gmap_fault(address, (struct gmap *) S390_lowcore.gmap); if (address == -EFAULT) { @@ -549,19 +549,15 @@ static void pfault_interrupt(struct ext_code ext_code, if ((subcode & 0xff00) != __SUBCODE_MASK) return; kstat_cpu(smp_processor_id()).irqs[EXTINT_PFL]++; - if (subcode & 0x0080) { - /* Get the token (= pid of the affected task). */ - pid = sizeof(void *) == 4 ? param32 : param64; - rcu_read_lock(); - tsk = find_task_by_pid_ns(pid, &init_pid_ns); - if (tsk) - get_task_struct(tsk); - rcu_read_unlock(); - if (!tsk) - return; - } else { - tsk = current; - } + /* Get the token (= pid of the affected task). */ + pid = sizeof(void *) == 4 ? param32 : param64; + rcu_read_lock(); + tsk = find_task_by_pid_ns(pid, &init_pid_ns); + if (tsk) + get_task_struct(tsk); + rcu_read_unlock(); + if (!tsk) + return; spin_lock(&pfault_lock); if (subcode & 0x0080) { /* signal bit is set -> a page has been swapped in by VM */ @@ -574,6 +570,7 @@ static void pfault_interrupt(struct ext_code ext_code, tsk->thread.pfault_wait = 0; list_del(&tsk->thread.list); wake_up_process(tsk); + put_task_struct(tsk); } else { /* Completion interrupt was faster than initial * interrupt. Set pfault_wait to -1 so the initial @@ -585,24 +582,35 @@ static void pfault_interrupt(struct ext_code ext_code, if (tsk->state == TASK_RUNNING) tsk->thread.pfault_wait = -1; } - put_task_struct(tsk); } else { /* signal bit not set -> a real page is missing. */ - if (tsk->thread.pfault_wait == -1) { + if (WARN_ON_ONCE(tsk != current)) + goto out; + if (tsk->thread.pfault_wait == 1) { + /* Already on the list with a reference: put to sleep */ + __set_task_state(tsk, TASK_UNINTERRUPTIBLE); + set_tsk_need_resched(tsk); + } else if (tsk->thread.pfault_wait == -1) { /* Completion interrupt was faster than the initial * interrupt (pfault_wait == -1). Set pfault_wait * back to zero and exit. */ tsk->thread.pfault_wait = 0; } else { /* Initial interrupt arrived before completion - * interrupt. Let the task sleep. */ + * interrupt. Let the task sleep. + * An extra task reference is needed since a different + * cpu may set the task state to TASK_RUNNING again + * before the scheduler is reached. */ + get_task_struct(tsk); tsk->thread.pfault_wait = 1; list_add(&tsk->thread.list, &pfault_list); - set_task_state(tsk, TASK_UNINTERRUPTIBLE); + __set_task_state(tsk, TASK_UNINTERRUPTIBLE); set_tsk_need_resched(tsk); } } +out: spin_unlock(&pfault_lock); + put_task_struct(tsk); } static int __cpuinit pfault_cpu_notify(struct notifier_block *self, @@ -620,6 +628,7 @@ static int __cpuinit pfault_cpu_notify(struct notifier_block *self, list_del(&thread->list); tsk = container_of(thread, struct task_struct, thread); wake_up_process(tsk); + put_task_struct(tsk); } spin_unlock_irq(&pfault_lock); break; diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c index 597bb2d..900de2b 100644 --- a/arch/s390/mm/hugetlbpage.c +++ b/arch/s390/mm/hugetlbpage.c @@ -58,6 +58,8 @@ void arch_release_hugepage(struct page *page) ptep = (pte_t *) page[1].index; if (!ptep) return; + clear_table((unsigned long *) ptep, _PAGE_TYPE_EMPTY, + PTRS_PER_PTE * sizeof(pte_t)); page_table_free(&init_mm, (unsigned long *) ptep); page[1].index = 0; } diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c index e1335dc..795a0a9 100644 --- a/arch/s390/mm/maccess.c +++ b/arch/s390/mm/maccess.c @@ -12,6 +12,7 @@ #include <linux/types.h> #include <linux/errno.h> #include <linux/gfp.h> +#include <linux/cpu.h> #include <asm/ctl_reg.h> /* @@ -166,3 +167,69 @@ out: free_page((unsigned long) buf); return rc; } + +/* + * Check if physical address is within prefix or zero page + */ +static int is_swapped(unsigned long addr) +{ + unsigned long lc; + int cpu; + + if (addr < sizeof(struct _lowcore)) + return 1; + for_each_online_cpu(cpu) { + lc = (unsigned long) lowcore_ptr[cpu]; + if (addr > lc + sizeof(struct _lowcore) - 1 || addr < lc) + continue; + return 1; + } + return 0; +} + +/* + * Return swapped prefix or zero page address + */ +static unsigned long get_swapped(unsigned long addr) +{ + unsigned long prefix = store_prefix(); + + if (addr < sizeof(struct _lowcore)) + return addr + prefix; + if (addr >= prefix && addr < prefix + sizeof(struct _lowcore)) + return addr - prefix; + return addr; +} + +/* + * Convert a physical pointer for /dev/mem access + * + * For swapped prefix pages a new buffer is returned that contains a copy of + * the absolute memory. The buffer size is maximum one page large. + */ +void *xlate_dev_mem_ptr(unsigned long addr) +{ + void *bounce = (void *) addr; + unsigned long size; + + get_online_cpus(); + preempt_disable(); + if (is_swapped(addr)) { + size = PAGE_SIZE - (addr & ~PAGE_MASK); + bounce = (void *) __get_free_page(GFP_ATOMIC); + if (bounce) + memcpy_real(bounce, (void *) get_swapped(addr), size); + } + preempt_enable(); + put_online_cpus(); + return bounce; +} + +/* + * Free converted buffer for /dev/mem access (if necessary) + */ +void unxlate_dev_mem_ptr(unsigned long addr, void *buf) +{ + if ((void *) addr != buf) + free_page((unsigned long) buf); +} diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 6e765bf..a3db5a3 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -822,6 +822,8 @@ int s390_enable_sie(void) /* we copy the mm and let dup_mm create the page tables with_pgstes */ tsk->mm->context.alloc_pgste = 1; + /* make sure that both mms have a correct rss state */ + sync_mm_rss(tsk->mm); mm = dup_mm(tsk); tsk->mm->context.alloc_pgste = 0; if (!mm) diff --git a/block/partitions/ibm.c b/block/partitions/ibm.c index d513a07..1104aca 100644 --- a/block/partitions/ibm.c +++ b/block/partitions/ibm.c @@ -253,7 +253,7 @@ int ibm_partition(struct parsed_partitions *state) /* Are we not supposed to report this ? */ goto out_readerr; } else - printk(KERN_WARNING "Warning, expected Label VOL1 not " + printk(KERN_INFO "Expected Label VOL1 not " "found, treating as CDL formated Disk"); } diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index dd414d9..371f13c 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -111,6 +111,7 @@ config CRYPTO_DES_S390 depends on S390 select CRYPTO_ALGAPI select CRYPTO_BLKCIPHER + select CRYPTO_DES help This is the s390 hardware accelerated implementation of the DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3). diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index 231a1d8..3650636 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -352,7 +352,17 @@ out: static int sclp_assign_storage(u16 rn) { - return do_assign_storage(0x000d0001, rn); + unsigned long long start, address; + int rc; + + rc = do_assign_storage(0x000d0001, rn); + if (rc) + goto out; + start = address = rn2addr(rn); + for (; address < start + rzm; address += PAGE_SIZE) + page_set_storage_key(address, PAGE_DEFAULT_KEY, 0); +out: + return rc; } static int sclp_unassign_storage(u16 rn) diff --git a/drivers/s390/char/tape.h b/drivers/s390/char/tape.h index 267b54e..bc6c7cf 100644 --- a/drivers/s390/char/tape.h +++ b/drivers/s390/char/tape.h @@ -154,12 +154,6 @@ struct tape_discipline { struct tape_request *(*read_block)(struct tape_device *, size_t); struct tape_request *(*write_block)(struct tape_device *, size_t); void (*process_eov)(struct tape_device*); -#ifdef CONFIG_S390_TAPE_BLOCK - /* Block device stuff. */ - struct tape_request *(*bread)(struct tape_device *, struct request *); - void (*check_locate)(struct tape_device *, struct tape_request *); - void (*free_bread)(struct tape_request *); -#endif /* ioctl function for additional ioctls. */ int (*ioctl_fn)(struct tape_device *, unsigned int, unsigned long); /* Array of tape commands with TAPE_NR_MTOPS entries */ @@ -182,26 +176,6 @@ struct tape_char_data { int block_size; /* of size block_size. */ }; -#ifdef CONFIG_S390_TAPE_BLOCK -/* Block Frontend Data */ -struct tape_blk_data -{ - struct tape_device * device; - /* Block device request queue. */ - struct request_queue * request_queue; - spinlock_t request_queue_lock; - - /* Task to move entries from block request to CCS request queue. */ - struct work_struct requeue_task; - atomic_t requeue_scheduled; - - /* Current position on the tape. */ - long block_position; - int medium_changed; - struct gendisk * disk; -}; -#endif - /* Tape Info */ struct tape_device { /* entry in tape_device_list */ @@ -248,10 +222,6 @@ struct tape_device { /* Character device frontend data */ struct tape_char_data char_data; -#ifdef CONFIG_S390_TAPE_BLOCK - /* Block dev frontend data */ - struct tape_blk_data blk_data; -#endif /* Function to start or stop the next request later. */ struct delayed_work tape_dnr; @@ -313,19 +283,6 @@ extern void tapechar_exit(void); extern int tapechar_setup_device(struct tape_device *); extern void tapechar_cleanup_device(struct tape_device *); -/* Externals from tape_block.c */ -#ifdef CONFIG_S390_TAPE_BLOCK -extern int tapeblock_init (void); -extern void tapeblock_exit(void); -extern int tapeblock_setup_device(struct tape_device *); -extern void tapeblock_cleanup_device(struct tape_device *); -#else -static inline int tapeblock_init (void) {return 0;} -static inline void tapeblock_exit (void) {;} -static inline int tapeblock_setup_device(struct tape_device *t) {return 0;} -static inline void tapeblock_cleanup_device (struct tape_device *t) {;} -#endif - /* tape initialisation functions */ #ifdef CONFIG_PROC_FS extern void tape_proc_init (void); diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c index 934ef33..b28de80 100644 --- a/drivers/s390/char/tape_34xx.c +++ b/drivers/s390/char/tape_34xx.c @@ -323,20 +323,6 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, inhibit_cu_recovery = (*device->modeset_byte & 0x80) ? 1 : 0; sense = irb->ecw; -#ifdef CONFIG_S390_TAPE_BLOCK - if (request->op == TO_BLOCK) { - /* - * Recovery for block device requests. Set the block_position - * to something invalid and retry. - */ - device->blk_data.block_position = -1; - if (request->retries-- <= 0) - return tape_34xx_erp_failed(request, -EIO); - else - return tape_34xx_erp_retry(request); - } -#endif - if ( sense[0] & SENSE_COMMAND_REJECT && sense[1] & SENSE_WRITE_PROTECT @@ -1129,123 +1115,6 @@ tape_34xx_mtseek(struct tape_device *device, int mt_count) return tape_do_io_free(device, request); } -#ifdef CONFIG_S390_TAPE_BLOCK -/* - * Tape block read for 34xx. - */ -static struct tape_request * -tape_34xx_bread(struct tape_device *device, struct request *req) -{ - struct tape_request *request; - struct ccw1 *ccw; - int count = 0; - unsigned off; - char *dst; - struct bio_vec *bv; - struct req_iterator iter; - struct tape_34xx_block_id * start_block; - - DBF_EVENT(6, "xBREDid:"); - - /* Count the number of blocks for the request. */ - rq_for_each_segment(bv, req, iter) - count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); - - /* Allocate the ccw request. */ - request = tape_alloc_request(3+count+1, 8); - if (IS_ERR(request)) - return request; - - /* Setup ccws. */ - request->op = TO_BLOCK; - start_block = (struct tape_34xx_block_id *) request->cpdata; - start_block->block = blk_rq_pos(req) >> TAPEBLOCK_HSEC_S2B; - DBF_EVENT(6, "start_block = %i\n", start_block->block); - - ccw = request->cpaddr; - ccw = tape_ccw_cc(ccw, MODE_SET_DB, 1, device->modeset_byte); - - /* - * We always setup a nop after the mode set ccw. This slot is - * used in tape_std_check_locate to insert a locate ccw if the - * current tape position doesn't match the start block to be read. - * The second nop will be filled with a read block id which is in - * turn used by tape_34xx_free_bread to populate the segment bid - * table. - */ - ccw = tape_ccw_cc(ccw, NOP, 0, NULL); - ccw = tape_ccw_cc(ccw, NOP, 0, NULL); - - rq_for_each_segment(bv, req, iter) { - dst = kmap(bv->bv_page) + bv->bv_offset; - for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { - ccw->flags = CCW_FLAG_CC; - ccw->cmd_code = READ_FORWARD; - ccw->count = TAPEBLOCK_HSEC_SIZE; - set_normalized_cda(ccw, (void*) __pa(dst)); - ccw++; - dst += TAPEBLOCK_HSEC_SIZE; - } - } - - ccw = tape_ccw_end(ccw, NOP, 0, NULL); - DBF_EVENT(6, "xBREDccwg\n"); - return request; -} - -static void -tape_34xx_free_bread (struct tape_request *request) -{ - struct ccw1* ccw; - - ccw = request->cpaddr; - if ((ccw + 2)->cmd_code == READ_BLOCK_ID) { - struct { - struct tape_34xx_block_id cbid; - struct tape_34xx_block_id dbid; - } __attribute__ ((packed)) *rbi_data; - - rbi_data = request->cpdata; - - if (request->device) - tape_34xx_add_sbid(request->device, rbi_data->cbid); - } - - /* Last ccw is a nop and doesn't need clear_normalized_cda */ - for (; ccw->flags & CCW_FLAG_CC; ccw++) - if (ccw->cmd_code == READ_FORWARD) - clear_normalized_cda(ccw); - tape_free_request(request); -} - -/* - * check_locate is called just before the tape request is passed to - * the common io layer for execution. It has to check the current - * tape position and insert a locate ccw if it doesn't match the - * start block for the request. - */ -static void -tape_34xx_check_locate(struct tape_device *device, struct tape_request *request) -{ - struct tape_34xx_block_id * start_block; - - start_block = (struct tape_34xx_block_id *) request->cpdata; - if (start_block->block == device->blk_data.block_position) - return; - - DBF_LH(4, "Block seek(%06d+%06d)\n", start_block->block, device->bof); - start_block->wrap = 0; - start_block->segment = 1; - start_block->format = (*device->modeset_byte & 0x08) ? - TAPE34XX_FMT_3480_XF : - TAPE34XX_FMT_3480; - start_block->block = start_block->block + device->bof; - tape_34xx_merge_sbid(device, start_block); - tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); - tape_ccw_cc(request->cpaddr + 2, READ_BLOCK_ID, 8, request->cpdata); -} -#endif - /* * List of 3480/3490 magnetic tape commands. */ @@ -1295,11 +1164,6 @@ static struct tape_discipline tape_discipline_34xx = { .irq = tape_34xx_irq, .read_block = tape_std_read_block, .write_block = tape_std_write_block, -#ifdef CONFIG_S390_TAPE_BLOCK - .bread = tape_34xx_bread, - .free_bread = tape_34xx_free_bread, - .check_locate = tape_34xx_check_locate, -#endif .ioctl_fn = tape_34xx_ioctl, .mtop_array = tape_34xx_mtop }; diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index 49c6aab..a5c6614 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -670,92 +670,6 @@ tape_3590_schedule_work(struct tape_device *device, enum tape_op op) return 0; } -#ifdef CONFIG_S390_TAPE_BLOCK -/* - * Tape Block READ - */ -static struct tape_request * -tape_3590_bread(struct tape_device *device, struct request *req) -{ - struct tape_request *request; - struct ccw1 *ccw; - int count = 0, start_block; - unsigned off; - char *dst; - struct bio_vec *bv; - struct req_iterator iter; - - DBF_EVENT(6, "xBREDid:"); - start_block = blk_rq_pos(req) >> TAPEBLOCK_HSEC_S2B; - DBF_EVENT(6, "start_block = %i\n", start_block); - - rq_for_each_segment(bv, req, iter) - count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); - - request = tape_alloc_request(2 + count + 1, 4); - if (IS_ERR(request)) - return request; - request->op = TO_BLOCK; - *(__u32 *) request->cpdata = start_block; - ccw = request->cpaddr; - ccw = tape_ccw_cc(ccw, MODE_SET_DB, 1, device->modeset_byte); - - /* - * We always setup a nop after the mode set ccw. This slot is - * used in tape_std_check_locate to insert a locate ccw if the - * current tape position doesn't match the start block to be read. - */ - ccw = tape_ccw_cc(ccw, NOP, 0, NULL); - - rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; - for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { - ccw->flags = CCW_FLAG_CC; - ccw->cmd_code = READ_FORWARD; - ccw->count = TAPEBLOCK_HSEC_SIZE; - set_normalized_cda(ccw, (void *) __pa(dst)); - ccw++; - dst += TAPEBLOCK_HSEC_SIZE; - } - BUG_ON(off > bv->bv_len); - } - ccw = tape_ccw_end(ccw, NOP, 0, NULL); - DBF_EVENT(6, "xBREDccwg\n"); - return request; -} - -static void -tape_3590_free_bread(struct tape_request *request) -{ - struct ccw1 *ccw; - - /* Last ccw is a nop and doesn't need clear_normalized_cda */ - for (ccw = request->cpaddr; ccw->flags & CCW_FLAG_CC; ccw++) - if (ccw->cmd_code == READ_FORWARD) - clear_normalized_cda(ccw); - tape_free_request(request); -} - -/* - * check_locate is called just before the tape request is passed to - * the common io layer for execution. It has to check the current - * tape position and insert a locate ccw if it doesn't match the - * start block for the request. - */ -static void -tape_3590_check_locate(struct tape_device *device, struct tape_request *request) -{ - __u32 *start_block; - - start_block = (__u32 *) request->cpdata; - if (*start_block != device->blk_data.block_position) { - /* Add the start offset of the file to get the real block. */ - *start_block += device->bof; - tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); - } -} -#endif - static void tape_3590_med_state_set(struct tape_device *device, struct tape_3590_med_sense *sense) { @@ -1423,20 +1337,6 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request, { struct tape_3590_sense *sense; -#ifdef CONFIG_S390_TAPE_BLOCK - if (request->op == TO_BLOCK) { - /* - * Recovery for block device requests. Set the block_position - * to something invalid and retry. - */ - device->blk_data.block_position = -1; - if (request->retries-- <= 0) - return tape_3590_erp_failed(device, request, irb, -EIO); - else - return tape_3590_erp_retry(device, request, irb); - } -#endif - sense = (struct tape_3590_sense *) irb->ecw; DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc); @@ -1729,11 +1629,6 @@ static struct tape_discipline tape_discipline_3590 = { .irq = tape_3590_irq, .read_block = tape_std_read_block, .write_block = tape_std_write_block, -#ifdef CONFIG_S390_TAPE_BLOCK - .bread = tape_3590_bread, - .free_bread = tape_3590_free_bread, - .check_locate = tape_3590_check_locate, -#endif .ioctl_fn = tape_3590_ioctl, .mtop_array = tape_3590_mtop }; diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c index 87cd0ab..46886a7 100644 --- a/drivers/s390/char/tape_char.c +++ b/drivers/s390/char/tape_char.c @@ -161,11 +161,6 @@ tapechar_read(struct file *filp, char __user *data, size_t count, loff_t *ppos) if (rc) return rc; -#ifdef CONFIG_S390_TAPE_BLOCK - /* Changes position. */ - device->blk_data.medium_changed = 1; -#endif - DBF_EVENT(6, "TCHAR:nbytes: %lx\n", block_size); /* Let the discipline build the ccw chain. */ request = device->discipline->read_block(device, block_size); @@ -218,11 +213,6 @@ tapechar_write(struct file *filp, const char __user *data, size_t count, loff_t if (rc) return rc; -#ifdef CONFIG_S390_TAPE_BLOCK - /* Changes position. */ - device->blk_data.medium_changed = 1; -#endif - DBF_EVENT(6,"TCHAR:nbytes: %lx\n", block_size); DBF_EVENT(6, "TCHAR:nblocks: %x\n", nblocks); /* Let the discipline build the ccw chain. */ @@ -379,9 +369,6 @@ __tapechar_ioctl(struct tape_device *device, case MTBSFM: case MTFSFM: case MTSEEK: -#ifdef CONFIG_S390_TAPE_BLOCK - device->blk_data.medium_changed = 1; -#endif if (device->required_tapemarks) tape_std_terminate_write(device); default: diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c index b3a3e8e..5856186 100644 --- a/drivers/s390/char/tape_core.c +++ b/drivers/s390/char/tape_core.c @@ -401,9 +401,6 @@ tape_generic_online(struct tape_device *device, rc = tapechar_setup_device(device); if (rc) goto out_minor; - rc = tapeblock_setup_device(device); - if (rc) - goto out_char; tape_state_set(device, TS_UNUSED); @@ -411,8 +408,6 @@ tape_generic_online(struct tape_device *device, return 0; -out_char: - tapechar_cleanup_device(device); out_minor: tape_remove_minor(device); out_discipline: @@ -426,7 +421,6 @@ out: static void tape_cleanup_device(struct tape_device *device) { - tapeblock_cleanup_device(device); tapechar_cleanup_device(device); device->discipline->cleanup_device(device); module_put(device->discipline->owner); @@ -785,10 +779,6 @@ __tape_start_io(struct tape_device *device, struct tape_request *request) { int rc; -#ifdef CONFIG_S390_TAPE_BLOCK - if (request->op == TO_BLOCK) - device->discipline->check_locate(device, request); -#endif rc = ccw_device_start( device->cdev, request->cpaddr, @@ -1253,7 +1243,7 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) } /* - * Tape device open function used by tape_char & tape_block frontends. + * Tape device open function used by tape_char frontend. */ int tape_open(struct tape_device *device) @@ -1283,7 +1273,7 @@ tape_open(struct tape_device *device) } /* - * Tape device release function used by tape_char & tape_block frontends. + * Tape device release function used by tape_char frontend. */ int tape_release(struct tape_device *device) @@ -1344,7 +1334,6 @@ tape_init (void) DBF_EVENT(3, "tape init\n"); tape_proc_init(); tapechar_init (); - tapeblock_init (); return 0; } @@ -1358,7 +1347,6 @@ tape_exit(void) /* Get rid of the frontends */ tapechar_exit(); - tapeblock_exit(); tape_proc_cleanup(); debug_unregister (TAPE_DBF_AREA); } diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 5f1dc6f..731470e 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -1,7 +1,7 @@ /* * bus driver for ccwgroup * - * Copyright IBM Corp. 2002, 2009 + * Copyright IBM Corp. 2002, 2012 * * Author(s): Arnd Bergmann (arndb@de.ibm.com) * Cornelia Huck (cornelia.huck@de.ibm.com) @@ -15,10 +15,13 @@ #include <linux/ctype.h> #include <linux/dcache.h> +#include <asm/cio.h> #include <asm/ccwdev.h> #include <asm/ccwgroup.h> -#define CCW_BUS_ID_SIZE 20 +#include "device.h" + +#define CCW_BUS_ID_SIZE 10 /* In Linux 2.4, we had a channel device layer called "chandev" * that did all sorts of obscure stuff for networking devices. @@ -27,19 +30,6 @@ * to devices that use multiple subchannels. */ -/* a device matches a driver if all its slave devices match the same - * entry of the driver */ -static int ccwgroup_bus_match(struct device *dev, struct device_driver * drv) -{ - struct ccwgroup_device *gdev = to_ccwgroupdev(dev); - struct ccwgroup_driver *gdrv = to_ccwgroupdrv(drv); - - if (gdev->creator_id == gdrv->driver_id) - return 1; - - return 0; -} - static struct bus_type ccwgroup_bus_type; static void __ccwgroup_remove_symlinks(struct ccwgroup_device *gdev) @@ -254,9 +244,10 @@ static int __ccwgroup_create_symlinks(struct ccwgroup_device *gdev) return 0; } -static int __get_next_bus_id(const char **buf, char *bus_id) +static int __get_next_id(const char **buf, struct ccw_dev_id *id) { - int rc, len; + unsigned int cssid, ssid, devno; + int ret = 0, len; char *start, *end; start = (char *)*buf; @@ -271,49 +262,40 @@ static int __get_next_bus_id(const char **buf, char *bus_id) len = end - start + 1; end++; } - if (len < CCW_BUS_ID_SIZE) { - strlcpy(bus_id, start, len); - rc = 0; + if (len <= CCW_BUS_ID_SIZE) { + if (sscanf(start, "%2x.%1x.%04x", &cssid, &ssid, &devno) != 3) + ret = -EINVAL; } else - rc = -EINVAL; - *buf = end; - return rc; -} - -static int __is_valid_bus_id(char bus_id[CCW_BUS_ID_SIZE]) -{ - int cssid, ssid, devno; + ret = -EINVAL; - /* Must be of form %x.%x.%04x */ - if (sscanf(bus_id, "%x.%1x.%04x", &cssid, &ssid, &devno) != 3) - return 0; - return 1; + if (!ret) { + id->ssid = ssid; + id->devno = devno; + } + *buf = end; + return ret; } /** - * ccwgroup_create_from_string() - create and register a ccw group device - * @root: parent device for the new device - * @creator_id: identifier of creating driver - * @cdrv: ccw driver of slave devices + * ccwgroup_create_dev() - create and register a ccw group device + * @parent: parent device for the new device + * @gdrv: driver for the new group device * @num_devices: number of slave devices * @buf: buffer containing comma separated bus ids of slave devices * - * Create and register a new ccw group device as a child of @root. Slave - * devices are obtained from the list of bus ids given in @buf and must all - * belong to @cdrv. + * Create and register a new ccw group device as a child of @parent. Slave + * devices are obtained from the list of bus ids given in @buf. * Returns: * %0 on success and an error code on failure. * Context: * non-atomic */ -int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, - struct ccw_driver *cdrv, int num_devices, - const char *buf) +int ccwgroup_create_dev(struct device *parent, struct ccwgroup_driver *gdrv, + int num_devices, const char *buf) { struct ccwgroup_device *gdev; + struct ccw_dev_id dev_id; int rc, i; - char tmp_bus_id[CCW_BUS_ID_SIZE]; - const char *curr_buf; gdev = kzalloc(sizeof(*gdev) + num_devices * sizeof(gdev->cdev[0]), GFP_KERNEL); @@ -323,29 +305,24 @@ int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, atomic_set(&gdev->onoff, 0); mutex_init(&gdev->reg_mutex); mutex_lock(&gdev->reg_mutex); - gdev->creator_id = creator_id; gdev->count = num_devices; gdev->dev.bus = &ccwgroup_bus_type; - gdev->dev.parent = root; + gdev->dev.parent = parent; gdev->dev.release = ccwgroup_release; device_initialize(&gdev->dev); - curr_buf = buf; - for (i = 0; i < num_devices && curr_buf; i++) { - rc = __get_next_bus_id(&curr_buf, tmp_bus_id); + for (i = 0; i < num_devices && buf; i++) { + rc = __get_next_id(&buf, &dev_id); if (rc != 0) goto error; - if (!__is_valid_bus_id(tmp_bus_id)) { - rc = -EINVAL; - goto error; - } - gdev->cdev[i] = get_ccwdev_by_busid(cdrv, tmp_bus_id); + gdev->cdev[i] = get_ccwdev_by_dev_id(&dev_id); /* * All devices have to be of the same type in * order to be grouped. */ - if (!gdev->cdev[i] - || gdev->cdev[i]->id.driver_info != + if (!gdev->cdev[i] || !gdev->cdev[i]->drv || + gdev->cdev[i]->drv != gdev->cdev[0]->drv || + gdev->cdev[i]->id.driver_info != gdev->cdev[0]->id.driver_info) { rc = -EINVAL; goto error; @@ -361,18 +338,25 @@ int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, spin_unlock_irq(gdev->cdev[i]->ccwlock); } /* Check for sufficient number of bus ids. */ - if (i < num_devices && !curr_buf) { + if (i < num_devices) { rc = -EINVAL; goto error; } /* Check for trailing stuff. */ - if (i == num_devices && strlen(curr_buf) > 0) { + if (i == num_devices && strlen(buf) > 0) { rc = -EINVAL; goto error; } dev_set_name(&gdev->dev, "%s", dev_name(&gdev->cdev[0]->dev)); gdev->dev.groups = ccwgroup_attr_groups; + + if (gdrv) { + gdev->dev.driver = &gdrv->driver; + rc = gdrv->setup ? gdrv->setup(gdev) : 0; + if (rc) + goto error; + } rc = device_add(&gdev->dev); if (rc) goto error; @@ -397,7 +381,7 @@ error: put_device(&gdev->dev); return rc; } -EXPORT_SYMBOL(ccwgroup_create_from_string); +EXPORT_SYMBOL(ccwgroup_create_dev); static int ccwgroup_notifier(struct notifier_block *nb, unsigned long action, void *data) @@ -440,14 +424,6 @@ module_exit(cleanup_ccwgroup); /************************** driver stuff ******************************/ -static int ccwgroup_probe(struct device *dev) -{ - struct ccwgroup_device *gdev = to_ccwgroupdev(dev); - struct ccwgroup_driver *gdrv = to_ccwgroupdrv(dev->driver); - - return gdrv->probe ? gdrv->probe(gdev) : -ENODEV; -} - static int ccwgroup_remove(struct device *dev) { struct ccwgroup_device *gdev = to_ccwgroupdev(dev); @@ -542,8 +518,6 @@ static const struct dev_pm_ops ccwgroup_pm_ops = { static struct bus_type ccwgroup_bus_type = { .name = "ccwgroup", - .match = ccwgroup_bus_match, - .probe = ccwgroup_probe, .remove = ccwgroup_remove, .shutdown = ccwgroup_shutdown, .pm = &ccwgroup_pm_ops, diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index a49c46c..a6ddaed 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -656,51 +656,34 @@ static struct io_subchannel_private console_priv; static int console_subchannel_in_use; /* - * Use cio_tpi to get a pending interrupt and call the interrupt handler. - * Return non-zero if an interrupt was processed, zero otherwise. + * Use cio_tsch to update the subchannel status and call the interrupt handler + * if status had been pending. Called with the console_subchannel lock. */ -static int cio_tpi(void) +static void cio_tsch(struct subchannel *sch) { - struct tpi_info *tpi_info; - struct subchannel *sch; struct irb *irb; int irq_context; - tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id; - if (tpi(NULL) != 1) - return 0; - kstat_cpu(smp_processor_id()).irqs[IO_INTERRUPT]++; - if (tpi_info->adapter_IO) { - do_adapter_IO(tpi_info->isc); - return 1; - } irb = (struct irb *)&S390_lowcore.irb; /* Store interrupt response block to lowcore. */ - if (tsch(tpi_info->schid, irb) != 0) { + if (tsch(sch->schid, irb) != 0) /* Not status pending or not operational. */ - kstat_cpu(smp_processor_id()).irqs[IOINT_CIO]++; - return 1; - } - sch = (struct subchannel *)(unsigned long)tpi_info->intparm; - if (!sch) { - kstat_cpu(smp_processor_id()).irqs[IOINT_CIO]++; - return 1; - } + return; + memcpy(&sch->schib.scsw, &irb->scsw, sizeof(union scsw)); + /* Call interrupt handler with updated status. */ irq_context = in_interrupt(); - if (!irq_context) + if (!irq_context) { local_bh_disable(); - irq_enter(); - spin_lock(sch->lock); - memcpy(&sch->schib.scsw, &irb->scsw, sizeof(union scsw)); + irq_enter(); + } if (sch->driver && sch->driver->irq) sch->driver->irq(sch); else kstat_cpu(smp_processor_id()).irqs[IOINT_CIO]++; - spin_unlock(sch->lock); - irq_exit(); - if (!irq_context) + if (!irq_context) { + irq_exit(); _local_bh_enable(); - return 1; + } } void *cio_get_console_priv(void) @@ -712,34 +695,16 @@ void *cio_get_console_priv(void) * busy wait for the next interrupt on the console */ void wait_cons_dev(void) - __releases(console_subchannel.lock) - __acquires(console_subchannel.lock) { - unsigned long cr6 __attribute__ ((aligned (8))); - unsigned long save_cr6 __attribute__ ((aligned (8))); - - /* - * before entering the spinlock we may already have - * processed the interrupt on a different CPU... - */ if (!console_subchannel_in_use) return; - /* disable all but the console isc */ - __ctl_store (save_cr6, 6, 6); - cr6 = 1UL << (31 - CONSOLE_ISC); - __ctl_load (cr6, 6, 6); - - do { - spin_unlock(console_subchannel.lock); - if (!cio_tpi()) - cpu_relax(); - spin_lock(console_subchannel.lock); - } while (console_subchannel.schib.scsw.cmd.actl != 0); - /* - * restore previous isc value - */ - __ctl_load (save_cr6, 6, 6); + while (1) { + cio_tsch(&console_subchannel); + if (console_subchannel.schib.scsw.cmd.actl == 0) + break; + udelay_simple(100); + } } static int diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 02d0152..f8f952d 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -695,7 +695,17 @@ static int match_dev_id(struct device *dev, void *data) return ccw_dev_id_is_equal(&cdev->private->dev_id, dev_id); } -static struct ccw_device *get_ccwdev_by_dev_id(struct ccw_dev_id *dev_id) +/** + * get_ccwdev_by_dev_id() - obtain device from a ccw device id + * @dev_id: id of the device to be searched + * + * This function searches all devices attached to the ccw bus for a device + * matching @dev_id. + * Returns: + * If a device is found its reference count is increased and returned; + * else %NULL is returned. + */ +struct ccw_device *get_ccwdev_by_dev_id(struct ccw_dev_id *dev_id) { struct device *dev; @@ -703,6 +713,7 @@ static struct ccw_device *get_ccwdev_by_dev_id(struct ccw_dev_id *dev_id) return dev ? to_ccwdev(dev) : NULL; } +EXPORT_SYMBOL_GPL(get_ccwdev_by_dev_id); static void ccw_device_do_unbind_bind(struct ccw_device *cdev) { diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index 179824b..6bace69 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -101,6 +101,7 @@ int ccw_device_test_sense_data(struct ccw_device *); void ccw_device_schedule_sch_unregister(struct ccw_device *); int ccw_purge_blacklisted(void); void ccw_device_sched_todo(struct ccw_device *cdev, enum cdev_todo todo); +struct ccw_device *get_ccwdev_by_dev_id(struct ccw_dev_id *dev_id); /* Function prototypes for device status and basic sense stuff. */ void ccw_device_accumulate_irb(struct ccw_device *, struct irb *); diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 35c685c..7493efa 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -63,7 +63,7 @@ static inline int do_siga_input(unsigned long schid, unsigned int mask, " ipm %0\n" " srl %0,28\n" : "=d" (cc) - : "d" (__fc), "d" (__schid), "d" (__mask) : "cc", "memory"); + : "d" (__fc), "d" (__schid), "d" (__mask) : "cc"); return cc; } @@ -74,7 +74,7 @@ static inline int do_siga_input(unsigned long schid, unsigned int mask, * @bb: busy bit indicator, set only if SIGA-w/wt could not access a buffer * @fc: function code to perform * - * Returns cc or QDIO_ERROR_SIGA_ACCESS_EXCEPTION. + * Returns condition code. * Note: For IQDC unicast queues only the highest priority queue is processed. */ static inline int do_siga_output(unsigned long schid, unsigned long mask, @@ -85,18 +85,16 @@ static inline int do_siga_output(unsigned long schid, unsigned long mask, register unsigned long __schid asm("1") = schid; register unsigned long __mask asm("2") = mask; register unsigned long __aob asm("3") = aob; - int cc = QDIO_ERROR_SIGA_ACCESS_EXCEPTION; + int cc; asm volatile( " siga 0\n" - "0: ipm %0\n" + " ipm %0\n" " srl %0,28\n" - "1:\n" - EX_TABLE(0b, 1b) - : "+d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask), - "+d" (__aob) - : : "cc", "memory"); - *bb = ((unsigned int) __fc) >> 31; + : "=d" (cc), "+d" (__fc), "+d" (__aob) + : "d" (__schid), "d" (__mask) + : "cc"); + *bb = __fc >> 31; return cc; } @@ -167,7 +165,7 @@ again: DBF_ERROR("%4x EQBS ERROR", SCH_NO(q)); DBF_ERROR("%3d%3d%2d", count, tmp_count, nr); - q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE_CHECK_CONDITION, + q->handler(q->irq_ptr->cdev, QDIO_ERROR_GET_BUF_STATE, q->nr, q->first_to_kick, count, q->irq_ptr->int_parm); return 0; } @@ -215,7 +213,7 @@ again: DBF_ERROR("%4x SQBS ERROR", SCH_NO(q)); DBF_ERROR("%3d%3d%2d", count, tmp_count, nr); - q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE_CHECK_CONDITION, + q->handler(q->irq_ptr->cdev, QDIO_ERROR_SET_BUF_STATE, q->nr, q->first_to_kick, count, q->irq_ptr->int_parm); return 0; } @@ -313,7 +311,7 @@ static inline int qdio_siga_sync(struct qdio_q *q, unsigned int output, cc = do_siga_sync(schid, output, input, fc); if (unlikely(cc)) DBF_ERROR("%4x SIGA-S:%2d", SCH_NO(q), cc); - return cc; + return (cc) ? -EIO : 0; } static inline int qdio_siga_sync_q(struct qdio_q *q) @@ -384,7 +382,7 @@ static inline int qdio_siga_input(struct qdio_q *q) cc = do_siga_input(schid, q->mask, fc); if (unlikely(cc)) DBF_ERROR("%4x SIGA-R:%2d", SCH_NO(q), cc); - return cc; + return (cc) ? -EIO : 0; } #define qdio_siga_sync_out(q) qdio_siga_sync(q, ~0U, 0) @@ -443,7 +441,7 @@ static void process_buffer_error(struct qdio_q *q, int count) unsigned char state = (q->is_input_q) ? SLSB_P_INPUT_NOT_INIT : SLSB_P_OUTPUT_NOT_INIT; - q->qdio_error |= QDIO_ERROR_SLSB_STATE; + q->qdio_error = QDIO_ERROR_SLSB_STATE; /* special handling for no target buffer empty */ if ((!q->is_input_q && @@ -519,7 +517,7 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) int count, stop; unsigned char state = 0; - q->timestamp = get_clock_fast(); + q->timestamp = get_clock(); /* * Don't check 128 buffers, as otherwise qdio_inbound_q_moved @@ -575,7 +573,7 @@ static int qdio_inbound_q_moved(struct qdio_q *q) bufnr = get_inbound_buffer_frontier(q); - if ((bufnr != q->last_move) || q->qdio_error) { + if (bufnr != q->last_move) { q->last_move = bufnr; if (!is_thinint_irq(q->irq_ptr) && MACHINE_IS_LPAR) q->u.in.timestamp = get_clock(); @@ -790,7 +788,7 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) int count, stop; unsigned char state = 0; - q->timestamp = get_clock_fast(); + q->timestamp = get_clock(); if (need_siga_sync(q)) if (((queue_type(q) != QDIO_IQDIO_QFMT) && @@ -863,7 +861,7 @@ static inline int qdio_outbound_q_moved(struct qdio_q *q) bufnr = get_outbound_buffer_frontier(q); - if ((bufnr != q->last_move) || q->qdio_error) { + if (bufnr != q->last_move) { q->last_move = bufnr; DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out moved:%1d", q->nr); return 1; @@ -894,13 +892,16 @@ retry: goto retry; } DBF_ERROR("%4x cc2 BBC:%1d", SCH_NO(q), q->nr); - cc |= QDIO_ERROR_SIGA_BUSY; - } else + cc = -EBUSY; + } else { DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-w cc2:%1d", q->nr); + cc = -ENOBUFS; + } break; case 1: case 3: DBF_ERROR("%4x SIGA-W:%1d", SCH_NO(q), cc); + cc = -EIO; break; } if (retries) { @@ -1090,7 +1091,7 @@ static void qdio_handle_activate_check(struct ccw_device *cdev, } count = sub_buf(q->first_to_check, q->first_to_kick); - q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE_CHECK_CONDITION, + q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE, q->nr, q->first_to_kick, count, irq_ptr->int_parm); no_handler: qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED); @@ -1691,7 +1692,7 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags, "do%02x b:%02x c:%02x", callflags, bufnr, count); if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE) - return -EBUSY; + return -EIO; if (!count) return 0; if (callflags & QDIO_FLAG_SYNC_INPUT) diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 7e9a72e..b987d46 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -215,7 +215,7 @@ ap_queue_interruption_control(ap_qid_t qid, void *ind) register struct ap_queue_status reg1_out asm ("1"); register void *reg2 asm ("2") = ind; asm volatile( - ".long 0xb2af0000" /* PQAP(RAPQ) */ + ".long 0xb2af0000" /* PQAP(AQIC) */ : "+d" (reg0), "+d" (reg1_in), "=d" (reg1_out), "+d" (reg2) : : "cc" ); @@ -232,7 +232,7 @@ __ap_query_functions(ap_qid_t qid, unsigned int *functions) register unsigned long reg2 asm ("2"); asm volatile( - ".long 0xb2af0000\n" + ".long 0xb2af0000\n" /* PQAP(TAPQ) */ "0:\n" EX_TABLE(0b, 0b) : "+d" (reg0), "+d" (reg1), "=d" (reg2) @@ -391,7 +391,7 @@ __ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length, reg0 |= 0x400000UL; asm volatile ( - "0: .long 0xb2ad0042\n" /* DQAP */ + "0: .long 0xb2ad0042\n" /* NQAP */ " brc 2,0b" : "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3) : "d" (reg4), "d" (reg5), "m" (*(msgblock *) msg) @@ -450,7 +450,7 @@ __ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length) asm volatile( - "0: .long 0xb2ae0064\n" + "0: .long 0xb2ae0064\n" /* DQAP */ " brc 6,0b\n" : "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg4), "+d" (reg5), "+d" (reg6), "+d" (reg7), @@ -836,12 +836,12 @@ 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_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); + ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); } list_for_each_entry_safe(ap_msg, next, &ap_dev->requestq, list) { list_del_init(&ap_msg->list); ap_dev->requestq_count--; - ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); + ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); } } @@ -1329,7 +1329,7 @@ static int ap_poll_read(struct ap_device *ap_dev, unsigned long *flags) continue; list_del_init(&ap_msg->list); ap_dev->pendingq_count--; - ap_dev->drv->receive(ap_dev, ap_msg, ap_dev->reply); + ap_msg->receive(ap_dev, ap_msg, ap_dev->reply); break; } if (ap_dev->queue_count > 0) @@ -1450,10 +1450,10 @@ static int __ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_ms return -EBUSY; case AP_RESPONSE_REQ_FAC_NOT_INST: case AP_RESPONSE_MESSAGE_TOO_BIG: - ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-EINVAL)); + ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-EINVAL)); return -EINVAL; default: /* Device is gone. */ - ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); + ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); return -ENODEV; } } else { @@ -1471,6 +1471,10 @@ 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. */ @@ -1482,7 +1486,7 @@ void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg) if (rc == -ENODEV) ap_dev->unregistered = 1; } else { - ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); + ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV)); rc = -ENODEV; } spin_unlock_bh(&ap_dev->lock); diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index d960a63..726fc65 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -136,9 +136,6 @@ struct ap_driver { int (*probe)(struct ap_device *); void (*remove)(struct ap_device *); - /* receive is called from tasklet context */ - void (*receive)(struct ap_device *, struct ap_message *, - struct ap_message *); int request_timeout; /* request timeout in jiffies */ }; @@ -183,6 +180,9 @@ struct ap_message { void *private; /* ap driver private pointer. */ unsigned int special:1; /* Used for special commands. */ + /* receive is called from tasklet context */ + void (*receive)(struct ap_device *, struct ap_message *, + struct ap_message *); }; #define AP_DEVICE(dt) \ @@ -199,6 +199,7 @@ static inline void ap_init_message(struct ap_message *ap_msg) ap_msg->psmid = 0; ap_msg->length = 0; ap_msg->special = 0; + ap_msg->receive = NULL; } /* diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c index 0842867..4681244 100644 --- a/drivers/s390/crypto/zcrypt_cex2a.c +++ b/drivers/s390/crypto/zcrypt_cex2a.c @@ -77,7 +77,6 @@ static void zcrypt_cex2a_receive(struct ap_device *, struct ap_message *, static struct ap_driver zcrypt_cex2a_driver = { .probe = zcrypt_cex2a_probe, .remove = zcrypt_cex2a_remove, - .receive = zcrypt_cex2a_receive, .ids = zcrypt_cex2a_ids, .request_timeout = CEX2A_CLEANUP_TIME, }; @@ -349,6 +348,7 @@ static long zcrypt_cex2a_modexpo(struct zcrypt_device *zdev, ap_msg.message = kmalloc(CEX3A_MAX_MESSAGE_SIZE, GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; + ap_msg.receive = zcrypt_cex2a_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &work; @@ -390,6 +390,7 @@ static long zcrypt_cex2a_modexpo_crt(struct zcrypt_device *zdev, ap_msg.message = kmalloc(CEX3A_MAX_MESSAGE_SIZE, GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; + ap_msg.receive = zcrypt_cex2a_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &work; diff --git a/drivers/s390/crypto/zcrypt_pcica.c b/drivers/s390/crypto/zcrypt_pcica.c index 0effca9..ad7951c 100644 --- a/drivers/s390/crypto/zcrypt_pcica.c +++ b/drivers/s390/crypto/zcrypt_pcica.c @@ -67,7 +67,6 @@ static void zcrypt_pcica_receive(struct ap_device *, struct ap_message *, static struct ap_driver zcrypt_pcica_driver = { .probe = zcrypt_pcica_probe, .remove = zcrypt_pcica_remove, - .receive = zcrypt_pcica_receive, .ids = zcrypt_pcica_ids, .request_timeout = PCICA_CLEANUP_TIME, }; @@ -284,6 +283,7 @@ static long zcrypt_pcica_modexpo(struct zcrypt_device *zdev, 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; @@ -322,6 +322,7 @@ static long zcrypt_pcica_modexpo_crt(struct zcrypt_device *zdev, 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; diff --git a/drivers/s390/crypto/zcrypt_pcicc.c b/drivers/s390/crypto/zcrypt_pcicc.c index f9523c0..e5dd335 100644 --- a/drivers/s390/crypto/zcrypt_pcicc.c +++ b/drivers/s390/crypto/zcrypt_pcicc.c @@ -79,7 +79,6 @@ static void zcrypt_pcicc_receive(struct ap_device *, struct ap_message *, static struct ap_driver zcrypt_pcicc_driver = { .probe = zcrypt_pcicc_probe, .remove = zcrypt_pcicc_remove, - .receive = zcrypt_pcicc_receive, .ids = zcrypt_pcicc_ids, .request_timeout = PCICC_CLEANUP_TIME, }; @@ -488,6 +487,7 @@ static long zcrypt_pcicc_modexpo(struct zcrypt_device *zdev, 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); @@ -527,6 +527,7 @@ static long zcrypt_pcicc_modexpo_crt(struct zcrypt_device *zdev, 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); diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c index cf1cbd4..f7cc434 100644 --- a/drivers/s390/crypto/zcrypt_pcixcc.c +++ b/drivers/s390/crypto/zcrypt_pcixcc.c @@ -89,7 +89,6 @@ static void zcrypt_pcixcc_receive(struct ap_device *, struct ap_message *, static struct ap_driver zcrypt_pcixcc_driver = { .probe = zcrypt_pcixcc_probe, .remove = zcrypt_pcixcc_remove, - .receive = zcrypt_pcixcc_receive, .ids = zcrypt_pcixcc_ids, .request_timeout = PCIXCC_CLEANUP_TIME, }; @@ -698,6 +697,7 @@ static long zcrypt_pcixcc_modexpo(struct zcrypt_device *zdev, ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; + ap_msg.receive = zcrypt_pcixcc_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; @@ -738,6 +738,7 @@ static long zcrypt_pcixcc_modexpo_crt(struct zcrypt_device *zdev, ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; + ap_msg.receive = zcrypt_pcixcc_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; @@ -778,6 +779,7 @@ static long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev, ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; + ap_msg.receive = zcrypt_pcixcc_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; @@ -818,6 +820,7 @@ static long zcrypt_pcixcc_rng(struct zcrypt_device *zdev, ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; + ap_msg.receive = zcrypt_pcixcc_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c index b41fae3..6b1ff90 100644 --- a/drivers/s390/net/claw.c +++ b/drivers/s390/net/claw.c @@ -136,7 +136,6 @@ static inline void claw_set_busy(struct net_device *dev) { ((struct claw_privbk *)dev->ml_priv)->tbusy = 1; - eieio(); } static inline void @@ -144,13 +143,11 @@ claw_clear_busy(struct net_device *dev) { clear_bit(0, &(((struct claw_privbk *) dev->ml_priv)->tbusy)); netif_wake_queue(dev); - eieio(); } static inline int claw_check_busy(struct net_device *dev) { - eieio(); return ((struct claw_privbk *) dev->ml_priv)->tbusy; } @@ -233,8 +230,6 @@ static ssize_t claw_rbuff_show(struct device *dev, static ssize_t claw_rbuff_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); -static int claw_add_files(struct device *dev); -static void claw_remove_files(struct device *dev); /* Functions for System Validate */ static int claw_process_control( struct net_device *dev, struct ccwbk * p_ccw); @@ -267,12 +262,10 @@ static struct ccwgroup_driver claw_group_driver = { .owner = THIS_MODULE, .name = "claw", }, - .max_slaves = 2, - .driver_id = 0xC3D3C1E6, - .probe = claw_probe, - .remove = claw_remove_device, - .set_online = claw_new_device, - .set_offline = claw_shutdown_device, + .setup = claw_probe, + .remove = claw_remove_device, + .set_online = claw_new_device, + .set_offline = claw_shutdown_device, .prepare = claw_pm_prepare, }; @@ -293,30 +286,24 @@ static struct ccw_driver claw_ccw_driver = { .int_class = IOINT_CLW, }; -static ssize_t -claw_driver_group_store(struct device_driver *ddrv, const char *buf, - size_t count) +static ssize_t claw_driver_group_store(struct device_driver *ddrv, + const char *buf, size_t count) { int err; - err = ccwgroup_create_from_string(claw_root_dev, - claw_group_driver.driver_id, - &claw_ccw_driver, 2, buf); + err = ccwgroup_create_dev(claw_root_dev, &claw_group_driver, 2, buf); return err ? err : count; } - static DRIVER_ATTR(group, 0200, NULL, claw_driver_group_store); -static struct attribute *claw_group_attrs[] = { +static struct attribute *claw_drv_attrs[] = { &driver_attr_group.attr, NULL, }; - -static struct attribute_group claw_group_attr_group = { - .attrs = claw_group_attrs, +static struct attribute_group claw_drv_attr_group = { + .attrs = claw_drv_attrs, }; - -static const struct attribute_group *claw_group_attr_groups[] = { - &claw_group_attr_group, +static const struct attribute_group *claw_drv_attr_groups[] = { + &claw_drv_attr_group, NULL, }; @@ -324,60 +311,6 @@ static const struct attribute_group *claw_group_attr_groups[] = { * Key functions */ -/*----------------------------------------------------------------* - * claw_probe * - * this function is called for each CLAW device. * - *----------------------------------------------------------------*/ -static int -claw_probe(struct ccwgroup_device *cgdev) -{ - int rc; - struct claw_privbk *privptr=NULL; - - CLAW_DBF_TEXT(2, setup, "probe"); - if (!get_device(&cgdev->dev)) - return -ENODEV; - privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL); - dev_set_drvdata(&cgdev->dev, privptr); - if (privptr == NULL) { - probe_error(cgdev); - put_device(&cgdev->dev); - CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); - return -ENOMEM; - } - privptr->p_mtc_envelope= kzalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL); - privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL); - if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) { - probe_error(cgdev); - put_device(&cgdev->dev); - CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); - return -ENOMEM; - } - memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8); - memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8); - memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8); - privptr->p_env->packing = 0; - privptr->p_env->write_buffers = 5; - privptr->p_env->read_buffers = 5; - privptr->p_env->read_size = CLAW_FRAME_SIZE; - privptr->p_env->write_size = CLAW_FRAME_SIZE; - rc = claw_add_files(&cgdev->dev); - if (rc) { - probe_error(cgdev); - put_device(&cgdev->dev); - dev_err(&cgdev->dev, "Creating the /proc files for a new" - " CLAW device failed\n"); - CLAW_DBF_TEXT_(2, setup, "probex%d", rc); - return rc; - } - privptr->p_env->p_priv = privptr; - cgdev->cdev[0]->handler = claw_irq_handler; - cgdev->cdev[1]->handler = claw_irq_handler; - CLAW_DBF_TEXT(2, setup, "prbext 0"); - - return 0; -} /* end of claw_probe */ - /*-------------------------------------------------------------------* * claw_tx * *-------------------------------------------------------------------*/ @@ -3093,7 +3026,6 @@ claw_remove_device(struct ccwgroup_device *cgdev) dev_info(&cgdev->dev, " will be removed.\n"); if (cgdev->state == CCWGROUP_ONLINE) claw_shutdown_device(cgdev); - claw_remove_files(&cgdev->dev); kfree(priv->p_mtc_envelope); priv->p_mtc_envelope=NULL; kfree(priv->p_env); @@ -3321,7 +3253,6 @@ claw_rbuff_write(struct device *dev, struct device_attribute *attr, CLAW_DBF_TEXT_(2, setup, "RB=%d", p_env->read_buffers); return count; } - static DEVICE_ATTR(read_buffer, 0644, claw_rbuff_show, claw_rbuff_write); static struct attribute *claw_attr[] = { @@ -3332,40 +3263,73 @@ static struct attribute *claw_attr[] = { &dev_attr_host_name.attr, NULL, }; - static struct attribute_group claw_attr_group = { .attrs = claw_attr, }; +static const struct attribute_group *claw_attr_groups[] = { + &claw_attr_group, + NULL, +}; +static const struct device_type claw_devtype = { + .name = "claw", + .groups = claw_attr_groups, +}; -static int -claw_add_files(struct device *dev) +/*----------------------------------------------------------------* + * claw_probe * + * this function is called for each CLAW device. * + *----------------------------------------------------------------*/ +static int claw_probe(struct ccwgroup_device *cgdev) { - CLAW_DBF_TEXT(2, setup, "add_file"); - return sysfs_create_group(&dev->kobj, &claw_attr_group); -} + struct claw_privbk *privptr = NULL; -static void -claw_remove_files(struct device *dev) -{ - CLAW_DBF_TEXT(2, setup, "rem_file"); - sysfs_remove_group(&dev->kobj, &claw_attr_group); -} + CLAW_DBF_TEXT(2, setup, "probe"); + if (!get_device(&cgdev->dev)) + return -ENODEV; + privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL); + dev_set_drvdata(&cgdev->dev, privptr); + if (privptr == NULL) { + probe_error(cgdev); + put_device(&cgdev->dev); + CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); + return -ENOMEM; + } + privptr->p_mtc_envelope = kzalloc(MAX_ENVELOPE_SIZE, GFP_KERNEL); + privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL); + if ((privptr->p_mtc_envelope == NULL) || (privptr->p_env == NULL)) { + probe_error(cgdev); + put_device(&cgdev->dev); + CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); + return -ENOMEM; + } + memcpy(privptr->p_env->adapter_name, WS_NAME_NOT_DEF, 8); + memcpy(privptr->p_env->host_name, WS_NAME_NOT_DEF, 8); + memcpy(privptr->p_env->api_type, WS_NAME_NOT_DEF, 8); + privptr->p_env->packing = 0; + privptr->p_env->write_buffers = 5; + privptr->p_env->read_buffers = 5; + privptr->p_env->read_size = CLAW_FRAME_SIZE; + privptr->p_env->write_size = CLAW_FRAME_SIZE; + privptr->p_env->p_priv = privptr; + cgdev->cdev[0]->handler = claw_irq_handler; + cgdev->cdev[1]->handler = claw_irq_handler; + cgdev->dev.type = &claw_devtype; + CLAW_DBF_TEXT(2, setup, "prbext 0"); + + return 0; +} /* end of claw_probe */ /*--------------------------------------------------------------------* * claw_init and cleanup * *---------------------------------------------------------------------*/ -static void __exit -claw_cleanup(void) +static void __exit claw_cleanup(void) { - driver_remove_file(&claw_group_driver.driver, - &driver_attr_group); ccwgroup_driver_unregister(&claw_group_driver); ccw_driver_unregister(&claw_ccw_driver); root_device_unregister(claw_root_dev); claw_unregister_debug_facility(); pr_info("Driver unloaded\n"); - } /** @@ -3374,8 +3338,7 @@ claw_cleanup(void) * * @return 0 on success, !0 on error. */ -static int __init -claw_init(void) +static int __init claw_init(void) { int ret = 0; @@ -3394,7 +3357,7 @@ claw_init(void) ret = ccw_driver_register(&claw_ccw_driver); if (ret) goto ccw_err; - claw_group_driver.driver.groups = claw_group_attr_groups; + claw_group_driver.driver.groups = claw_drv_attr_groups; ret = ccwgroup_driver_register(&claw_group_driver); if (ret) goto ccwgroup_err; diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c index 11f3b07..3cd2554 100644 --- a/drivers/s390/net/ctcm_main.c +++ b/drivers/s390/net/ctcm_main.c @@ -1296,6 +1296,11 @@ static void ctcm_irq_handler(struct ccw_device *cdev, } +static const struct device_type ctcm_devtype = { + .name = "ctcm", + .groups = ctcm_attr_groups, +}; + /** * Add ctcm specific attributes. * Add ctcm private data. @@ -1307,7 +1312,6 @@ static void ctcm_irq_handler(struct ccw_device *cdev, static int ctcm_probe_device(struct ccwgroup_device *cgdev) { struct ctcm_priv *priv; - int rc; CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, "%s %p", @@ -1324,17 +1328,11 @@ static int ctcm_probe_device(struct ccwgroup_device *cgdev) put_device(&cgdev->dev); return -ENOMEM; } - - rc = ctcm_add_files(&cgdev->dev); - if (rc) { - kfree(priv); - put_device(&cgdev->dev); - return rc; - } priv->buffer_size = CTCM_BUFSIZE_DEFAULT; cgdev->cdev[0]->handler = ctcm_irq_handler; cgdev->cdev[1]->handler = ctcm_irq_handler; dev_set_drvdata(&cgdev->dev, priv); + cgdev->dev.type = &ctcm_devtype; return 0; } @@ -1611,11 +1609,6 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev) goto out_dev; } - if (ctcm_add_attributes(&cgdev->dev)) { - result = -ENODEV; - goto out_unregister; - } - strlcpy(priv->fsm->name, dev->name, sizeof(priv->fsm->name)); dev_info(&dev->dev, @@ -1629,8 +1622,6 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev) priv->channel[CTCM_WRITE]->id, priv->protocol); return 0; -out_unregister: - unregister_netdev(dev); out_dev: ctcm_free_netdevice(dev); out_ccw2: @@ -1669,7 +1660,6 @@ static int ctcm_shutdown_device(struct ccwgroup_device *cgdev) /* Close the device */ ctcm_close(dev); dev->flags &= ~IFF_RUNNING; - ctcm_remove_attributes(&cgdev->dev); channel_free(priv->channel[CTCM_READ]); } else dev = NULL; @@ -1711,7 +1701,6 @@ static void ctcm_remove_device(struct ccwgroup_device *cgdev) if (cgdev->state == CCWGROUP_ONLINE) ctcm_shutdown_device(cgdev); - ctcm_remove_files(&cgdev->dev); dev_set_drvdata(&cgdev->dev, NULL); kfree(priv); put_device(&cgdev->dev); @@ -1778,9 +1767,7 @@ static struct ccwgroup_driver ctcm_group_driver = { .owner = THIS_MODULE, .name = CTC_DRIVER_NAME, }, - .max_slaves = 2, - .driver_id = 0xC3E3C3D4, /* CTCM */ - .probe = ctcm_probe_device, + .setup = ctcm_probe_device, .remove = ctcm_remove_device, .set_online = ctcm_new_device, .set_offline = ctcm_shutdown_device, @@ -1789,31 +1776,25 @@ static struct ccwgroup_driver ctcm_group_driver = { .restore = ctcm_pm_resume, }; -static ssize_t -ctcm_driver_group_store(struct device_driver *ddrv, const char *buf, - size_t count) +static ssize_t ctcm_driver_group_store(struct device_driver *ddrv, + const char *buf, size_t count) { int err; - err = ccwgroup_create_from_string(ctcm_root_dev, - ctcm_group_driver.driver_id, - &ctcm_ccw_driver, 2, buf); + err = ccwgroup_create_dev(ctcm_root_dev, &ctcm_group_driver, 2, buf); return err ? err : count; } - static DRIVER_ATTR(group, 0200, NULL, ctcm_driver_group_store); -static struct attribute *ctcm_group_attrs[] = { +static struct attribute *ctcm_drv_attrs[] = { &driver_attr_group.attr, NULL, }; - -static struct attribute_group ctcm_group_attr_group = { - .attrs = ctcm_group_attrs, +static struct attribute_group ctcm_drv_attr_group = { + .attrs = ctcm_drv_attrs, }; - -static const struct attribute_group *ctcm_group_attr_groups[] = { - &ctcm_group_attr_group, +static const struct attribute_group *ctcm_drv_attr_groups[] = { + &ctcm_drv_attr_group, NULL, }; @@ -1829,7 +1810,6 @@ static const struct attribute_group *ctcm_group_attr_groups[] = { */ static void __exit ctcm_exit(void) { - driver_remove_file(&ctcm_group_driver.driver, &driver_attr_group); ccwgroup_driver_unregister(&ctcm_group_driver); ccw_driver_unregister(&ctcm_ccw_driver); root_device_unregister(ctcm_root_dev); @@ -1867,7 +1847,7 @@ static int __init ctcm_init(void) ret = ccw_driver_register(&ctcm_ccw_driver); if (ret) goto ccw_err; - ctcm_group_driver.driver.groups = ctcm_group_attr_groups; + ctcm_group_driver.driver.groups = ctcm_drv_attr_groups; ret = ccwgroup_driver_register(&ctcm_group_driver); if (ret) goto ccwgroup_err; diff --git a/drivers/s390/net/ctcm_main.h b/drivers/s390/net/ctcm_main.h index 24d5215..b9056a5 100644 --- a/drivers/s390/net/ctcm_main.h +++ b/drivers/s390/net/ctcm_main.h @@ -225,13 +225,7 @@ struct ctcm_priv { int ctcm_open(struct net_device *dev); int ctcm_close(struct net_device *dev); -/* - * prototypes for non-static sysfs functions - */ -int ctcm_add_attributes(struct device *dev); -void ctcm_remove_attributes(struct device *dev); -int ctcm_add_files(struct device *dev); -void ctcm_remove_files(struct device *dev); +extern const struct attribute_group *ctcm_attr_groups[]; /* * Compatibility macros for busy handling diff --git a/drivers/s390/net/ctcm_sysfs.c b/drivers/s390/net/ctcm_sysfs.c index 650aec1..0c27ae7 100644 --- a/drivers/s390/net/ctcm_sysfs.c +++ b/drivers/s390/net/ctcm_sysfs.c @@ -13,6 +13,7 @@ #define KMSG_COMPONENT "ctcm" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#include <linux/device.h> #include <linux/sysfs.h> #include <linux/slab.h> #include "ctcm_main.h" @@ -108,10 +109,12 @@ static void ctcm_print_statistics(struct ctcm_priv *priv) } static ssize_t stats_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { + struct ccwgroup_device *gdev = to_ccwgroupdev(dev); struct ctcm_priv *priv = dev_get_drvdata(dev); - if (!priv) + + if (!priv || gdev->state != CCWGROUP_ONLINE) return -ENODEV; ctcm_print_statistics(priv); return sprintf(buf, "0\n"); @@ -190,34 +193,14 @@ static struct attribute *ctcm_attr[] = { &dev_attr_protocol.attr, &dev_attr_type.attr, &dev_attr_buffer.attr, + &dev_attr_stats.attr, NULL, }; static struct attribute_group ctcm_attr_group = { .attrs = ctcm_attr, }; - -int ctcm_add_attributes(struct device *dev) -{ - int rc; - - rc = device_create_file(dev, &dev_attr_stats); - - return rc; -} - -void ctcm_remove_attributes(struct device *dev) -{ - device_remove_file(dev, &dev_attr_stats); -} - -int ctcm_add_files(struct device *dev) -{ - return sysfs_create_group(&dev->kobj, &ctcm_attr_group); -} - -void ctcm_remove_files(struct device *dev) -{ - sysfs_remove_group(&dev->kobj, &ctcm_attr_group); -} - +const struct attribute_group *ctcm_attr_groups[] = { + &ctcm_attr_group, + NULL, +}; diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c index 6056cf6..a3adf4b 100644 --- a/drivers/s390/net/lcs.c +++ b/drivers/s390/net/lcs.c @@ -2040,10 +2040,17 @@ static struct attribute * lcs_attrs[] = { &dev_attr_recover.attr, NULL, }; - static struct attribute_group lcs_attr_group = { .attrs = lcs_attrs, }; +static const struct attribute_group *lcs_attr_groups[] = { + &lcs_attr_group, + NULL, +}; +static const struct device_type lcs_devtype = { + .name = "lcs", + .groups = lcs_attr_groups, +}; /** * lcs_probe_device is called on establishing a new ccwgroup_device. @@ -2052,7 +2059,6 @@ static int lcs_probe_device(struct ccwgroup_device *ccwgdev) { struct lcs_card *card; - int ret; if (!get_device(&ccwgdev->dev)) return -ENODEV; @@ -2064,12 +2070,6 @@ lcs_probe_device(struct ccwgroup_device *ccwgdev) put_device(&ccwgdev->dev); return -ENOMEM; } - ret = sysfs_create_group(&ccwgdev->dev.kobj, &lcs_attr_group); - if (ret) { - lcs_free_card(card); - put_device(&ccwgdev->dev); - return ret; - } dev_set_drvdata(&ccwgdev->dev, card); ccwgdev->cdev[0]->handler = lcs_irq; ccwgdev->cdev[1]->handler = lcs_irq; @@ -2078,7 +2078,9 @@ lcs_probe_device(struct ccwgroup_device *ccwgdev) card->thread_start_mask = 0; card->thread_allowed_mask = 0; card->thread_running_mask = 0; - return 0; + ccwgdev->dev.type = &lcs_devtype; + + return 0; } static int @@ -2306,9 +2308,9 @@ lcs_remove_device(struct ccwgroup_device *ccwgdev) } if (card->dev) unregister_netdev(card->dev); - sysfs_remove_group(&ccwgdev->dev.kobj, &lcs_attr_group); lcs_cleanup_card(card); lcs_free_card(card); + dev_set_drvdata(&ccwgdev->dev, NULL); put_device(&ccwgdev->dev); } @@ -2393,9 +2395,7 @@ static struct ccwgroup_driver lcs_group_driver = { .owner = THIS_MODULE, .name = "lcs", }, - .max_slaves = 2, - .driver_id = 0xD3C3E2, - .probe = lcs_probe_device, + .setup = lcs_probe_device, .remove = lcs_remove_device, .set_online = lcs_new_device, .set_offline = lcs_shutdown_device, @@ -2406,30 +2406,24 @@ static struct ccwgroup_driver lcs_group_driver = { .restore = lcs_restore, }; -static ssize_t -lcs_driver_group_store(struct device_driver *ddrv, const char *buf, - size_t count) +static ssize_t lcs_driver_group_store(struct device_driver *ddrv, + const char *buf, size_t count) { int err; - err = ccwgroup_create_from_string(lcs_root_dev, - lcs_group_driver.driver_id, - &lcs_ccw_driver, 2, buf); + err = ccwgroup_create_dev(lcs_root_dev, &lcs_group_driver, 2, buf); return err ? err : count; } - static DRIVER_ATTR(group, 0200, NULL, lcs_driver_group_store); -static struct attribute *lcs_group_attrs[] = { +static struct attribute *lcs_drv_attrs[] = { &driver_attr_group.attr, NULL, }; - -static struct attribute_group lcs_group_attr_group = { - .attrs = lcs_group_attrs, +static struct attribute_group lcs_drv_attr_group = { + .attrs = lcs_drv_attrs, }; - -static const struct attribute_group *lcs_group_attr_groups[] = { - &lcs_group_attr_group, +static const struct attribute_group *lcs_drv_attr_groups[] = { + &lcs_drv_attr_group, NULL, }; @@ -2453,7 +2447,7 @@ __init lcs_init_module(void) rc = ccw_driver_register(&lcs_ccw_driver); if (rc) goto ccw_err; - lcs_group_driver.driver.groups = lcs_group_attr_groups; + lcs_group_driver.driver.groups = lcs_drv_attr_groups; rc = ccwgroup_driver_register(&lcs_group_driver); if (rc) goto ccwgroup_err; @@ -2479,8 +2473,6 @@ __exit lcs_cleanup_module(void) { pr_info("Terminating lcs module.\n"); LCS_DBF_TEXT(0, trace, "cleanup"); - driver_remove_file(&lcs_group_driver.driver, - &driver_attr_group); ccwgroup_driver_unregister(&lcs_group_driver); ccw_driver_unregister(&lcs_ccw_driver); root_device_unregister(lcs_root_dev); diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 40285dc..06e8f31 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -707,7 +707,16 @@ struct qeth_discipline { qdio_handler_t *input_handler; qdio_handler_t *output_handler; int (*recover)(void *ptr); - struct ccwgroup_driver *ccwgdriver; + int (*setup) (struct ccwgroup_device *); + void (*remove) (struct ccwgroup_device *); + int (*set_online) (struct ccwgroup_device *); + int (*set_offline) (struct ccwgroup_device *); + void (*shutdown)(struct ccwgroup_device *); + int (*prepare) (struct ccwgroup_device *); + void (*complete) (struct ccwgroup_device *); + int (*freeze)(struct ccwgroup_device *); + int (*thaw) (struct ccwgroup_device *); + int (*restore)(struct ccwgroup_device *); }; struct qeth_vlan_vid { @@ -771,7 +780,7 @@ struct qeth_card { struct qeth_perf_stats perf_stats; int read_or_write_problem; struct qeth_osn_info osn_info; - struct qeth_discipline discipline; + struct qeth_discipline *discipline; atomic_t force_alloc_skb; struct service_level qeth_service_level; struct qdio_ssqd_desc ssqd; @@ -837,16 +846,15 @@ static inline int qeth_is_diagass_supported(struct qeth_card *card, return card->info.diagass_support & (__u32)cmd; } -extern struct ccwgroup_driver qeth_l2_ccwgroup_driver; -extern struct ccwgroup_driver qeth_l3_ccwgroup_driver; +extern struct qeth_discipline qeth_l2_discipline; +extern struct qeth_discipline qeth_l3_discipline; +extern const struct attribute_group *qeth_generic_attr_groups[]; +extern const struct attribute_group *qeth_osn_attr_groups[]; + const char *qeth_get_cardname_short(struct qeth_card *); int qeth_realloc_buffer_pool(struct qeth_card *, int); int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); void qeth_core_free_discipline(struct qeth_card *); -int qeth_core_create_device_attributes(struct device *); -void qeth_core_remove_device_attributes(struct device *); -int qeth_core_create_osn_attributes(struct device *); -void qeth_core_remove_osn_attributes(struct device *); void qeth_buffer_reclaim_work(struct work_struct *); /* exports for qeth discipline device drivers */ diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index e000001..e118e1e 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -1363,7 +1363,7 @@ static void qeth_start_kernel_thread(struct work_struct *work) card->write.state != CH_STATE_UP) return; if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { - ts = kthread_run(card->discipline.recover, (void *)card, + ts = kthread_run(card->discipline->recover, (void *)card, "qeth_recover"); if (IS_ERR(ts)) { qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); @@ -3337,7 +3337,7 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, if (rc) { queue->card->stats.tx_errors += count; /* ignore temporary SIGA errors without busy condition */ - if (rc == QDIO_ERROR_SIGA_TARGET) + if (rc == -ENOBUFS) return; QETH_CARD_TEXT(queue->card, 2, "flushbuf"); QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); @@ -3531,7 +3531,7 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev, int i; QETH_CARD_TEXT(card, 6, "qdouhdl"); - if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) { + if (qdio_error & QDIO_ERROR_FATAL) { QETH_CARD_TEXT(card, 2, "achkcond"); netif_stop_queue(card->dev); qeth_schedule_recovery(card); @@ -4627,7 +4627,7 @@ static int qeth_qdio_establish(struct qeth_card *card) goto out_free_in_sbals; } for (i = 0; i < card->qdio.no_in_queues; ++i) - queue_start_poll[i] = card->discipline.start_poll; + queue_start_poll[i] = card->discipline->start_poll; qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); @@ -4651,8 +4651,8 @@ static int qeth_qdio_establish(struct qeth_card *card) init_data.qib_param_field = qib_param_field; init_data.no_input_qs = card->qdio.no_in_queues; init_data.no_output_qs = card->qdio.no_out_queues; - init_data.input_handler = card->discipline.input_handler; - init_data.output_handler = card->discipline.output_handler; + init_data.input_handler = card->discipline->input_handler; + init_data.output_handler = card->discipline->output_handler; init_data.queue_start_poll_array = queue_start_poll; init_data.int_parm = (unsigned long) card; init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; @@ -4737,13 +4737,6 @@ static struct ccw_driver qeth_ccw_driver = { .remove = ccwgroup_remove_ccwdev, }; -static int qeth_core_driver_group(const char *buf, struct device *root_dev, - unsigned long driver_id) -{ - return ccwgroup_create_from_string(root_dev, driver_id, - &qeth_ccw_driver, 3, buf); -} - int qeth_core_hardsetup_card(struct qeth_card *card) { int retries = 0; @@ -5040,17 +5033,15 @@ int qeth_core_load_discipline(struct qeth_card *card, mutex_lock(&qeth_mod_mutex); switch (discipline) { case QETH_DISCIPLINE_LAYER3: - card->discipline.ccwgdriver = try_then_request_module( - symbol_get(qeth_l3_ccwgroup_driver), - "qeth_l3"); + card->discipline = try_then_request_module( + symbol_get(qeth_l3_discipline), "qeth_l3"); break; case QETH_DISCIPLINE_LAYER2: - card->discipline.ccwgdriver = try_then_request_module( - symbol_get(qeth_l2_ccwgroup_driver), - "qeth_l2"); + card->discipline = try_then_request_module( + symbol_get(qeth_l2_discipline), "qeth_l2"); break; } - if (!card->discipline.ccwgdriver) { + if (!card->discipline) { dev_err(&card->gdev->dev, "There is no kernel module to " "support discipline %d\n", discipline); rc = -EINVAL; @@ -5062,12 +5053,21 @@ int qeth_core_load_discipline(struct qeth_card *card, void qeth_core_free_discipline(struct qeth_card *card) { if (card->options.layer2) - symbol_put(qeth_l2_ccwgroup_driver); + symbol_put(qeth_l2_discipline); else - symbol_put(qeth_l3_ccwgroup_driver); - card->discipline.ccwgdriver = NULL; + symbol_put(qeth_l3_discipline); + card->discipline = NULL; } +static const struct device_type qeth_generic_devtype = { + .name = "qeth_generic", + .groups = qeth_generic_attr_groups, +}; +static const struct device_type qeth_osn_devtype = { + .name = "qeth_osn", + .groups = qeth_osn_attr_groups, +}; + static int qeth_core_probe_device(struct ccwgroup_device *gdev) { struct qeth_card *card; @@ -5122,18 +5122,17 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev) } if (card->info.type == QETH_CARD_TYPE_OSN) - rc = qeth_core_create_osn_attributes(dev); + gdev->dev.type = &qeth_osn_devtype; else - rc = qeth_core_create_device_attributes(dev); - if (rc) - goto err_dbf; + gdev->dev.type = &qeth_generic_devtype; + switch (card->info.type) { case QETH_CARD_TYPE_OSN: case QETH_CARD_TYPE_OSM: rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); if (rc) - goto err_attr; - rc = card->discipline.ccwgdriver->probe(card->gdev); + goto err_dbf; + rc = card->discipline->setup(card->gdev); if (rc) goto err_disc; case QETH_CARD_TYPE_OSD: @@ -5151,11 +5150,6 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev) err_disc: qeth_core_free_discipline(card); -err_attr: - if (card->info.type == QETH_CARD_TYPE_OSN) - qeth_core_remove_osn_attributes(dev); - else - qeth_core_remove_device_attributes(dev); err_dbf: debug_unregister(card->debug); err_card: @@ -5172,14 +5166,8 @@ static void qeth_core_remove_device(struct ccwgroup_device *gdev) QETH_DBF_TEXT(SETUP, 2, "removedv"); - if (card->info.type == QETH_CARD_TYPE_OSN) { - qeth_core_remove_osn_attributes(&gdev->dev); - } else { - qeth_core_remove_device_attributes(&gdev->dev); - } - - if (card->discipline.ccwgdriver) { - card->discipline.ccwgdriver->remove(gdev); + if (card->discipline) { + card->discipline->remove(gdev); qeth_core_free_discipline(card); } @@ -5199,7 +5187,7 @@ static int qeth_core_set_online(struct ccwgroup_device *gdev) int rc = 0; int def_discipline; - if (!card->discipline.ccwgdriver) { + if (!card->discipline) { if (card->info.type == QETH_CARD_TYPE_IQD) def_discipline = QETH_DISCIPLINE_LAYER3; else @@ -5207,11 +5195,11 @@ static int qeth_core_set_online(struct ccwgroup_device *gdev) rc = qeth_core_load_discipline(card, def_discipline); if (rc) goto err; - rc = card->discipline.ccwgdriver->probe(card->gdev); + rc = card->discipline->setup(card->gdev); if (rc) goto err; } - rc = card->discipline.ccwgdriver->set_online(gdev); + rc = card->discipline->set_online(gdev); err: return rc; } @@ -5219,58 +5207,52 @@ err: static int qeth_core_set_offline(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - return card->discipline.ccwgdriver->set_offline(gdev); + return card->discipline->set_offline(gdev); } static void qeth_core_shutdown(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - if (card->discipline.ccwgdriver && - card->discipline.ccwgdriver->shutdown) - card->discipline.ccwgdriver->shutdown(gdev); + if (card->discipline && card->discipline->shutdown) + card->discipline->shutdown(gdev); } static int qeth_core_prepare(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - if (card->discipline.ccwgdriver && - card->discipline.ccwgdriver->prepare) - return card->discipline.ccwgdriver->prepare(gdev); + if (card->discipline && card->discipline->prepare) + return card->discipline->prepare(gdev); return 0; } static void qeth_core_complete(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - if (card->discipline.ccwgdriver && - card->discipline.ccwgdriver->complete) - card->discipline.ccwgdriver->complete(gdev); + if (card->discipline && card->discipline->complete) + card->discipline->complete(gdev); } static int qeth_core_freeze(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - if (card->discipline.ccwgdriver && - card->discipline.ccwgdriver->freeze) - return card->discipline.ccwgdriver->freeze(gdev); + if (card->discipline && card->discipline->freeze) + return card->discipline->freeze(gdev); return 0; } static int qeth_core_thaw(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - if (card->discipline.ccwgdriver && - card->discipline.ccwgdriver->thaw) - return card->discipline.ccwgdriver->thaw(gdev); + if (card->discipline && card->discipline->thaw) + return card->discipline->thaw(gdev); return 0; } static int qeth_core_restore(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - if (card->discipline.ccwgdriver && - card->discipline.ccwgdriver->restore) - return card->discipline.ccwgdriver->restore(gdev); + if (card->discipline && card->discipline->restore) + return card->discipline->restore(gdev); return 0; } @@ -5279,8 +5261,7 @@ static struct ccwgroup_driver qeth_core_ccwgroup_driver = { .owner = THIS_MODULE, .name = "qeth", }, - .driver_id = 0xD8C5E3C8, - .probe = qeth_core_probe_device, + .setup = qeth_core_probe_device, .remove = qeth_core_remove_device, .set_online = qeth_core_set_online, .set_offline = qeth_core_set_offline, @@ -5292,21 +5273,30 @@ static struct ccwgroup_driver qeth_core_ccwgroup_driver = { .restore = qeth_core_restore, }; -static ssize_t -qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf, - size_t count) +static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv, + const char *buf, size_t count) { int err; - err = qeth_core_driver_group(buf, qeth_core_root_dev, - qeth_core_ccwgroup_driver.driver_id); - if (err) - return err; - else - return count; -} + err = ccwgroup_create_dev(qeth_core_root_dev, + &qeth_core_ccwgroup_driver, 3, buf); + + return err ? err : count; +} static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); +static struct attribute *qeth_drv_attrs[] = { + &driver_attr_group.attr, + NULL, +}; +static struct attribute_group qeth_drv_attr_group = { + .attrs = qeth_drv_attrs, +}; +static const struct attribute_group *qeth_drv_attr_groups[] = { + &qeth_drv_attr_group, + NULL, +}; + static struct { const char str[ETH_GSTRING_LEN]; } qeth_ethtool_stats_keys[] = { @@ -5544,49 +5534,41 @@ static int __init qeth_core_init(void) rc = qeth_register_dbf_views(); if (rc) goto out_err; - rc = ccw_driver_register(&qeth_ccw_driver); - if (rc) - goto ccw_err; - rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); - if (rc) - goto ccwgroup_err; - rc = driver_create_file(&qeth_core_ccwgroup_driver.driver, - &driver_attr_group); - if (rc) - goto driver_err; qeth_core_root_dev = root_device_register("qeth"); rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0; if (rc) goto register_err; - qeth_core_header_cache = kmem_cache_create("qeth_hdr", sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); if (!qeth_core_header_cache) { rc = -ENOMEM; goto slab_err; } - qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); if (!qeth_qdio_outbuf_cache) { rc = -ENOMEM; goto cqslab_err; } + rc = ccw_driver_register(&qeth_ccw_driver); + if (rc) + goto ccw_err; + qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; + rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); + if (rc) + goto ccwgroup_err; return 0; + +ccwgroup_err: + ccw_driver_unregister(&qeth_ccw_driver); +ccw_err: + kmem_cache_destroy(qeth_qdio_outbuf_cache); cqslab_err: kmem_cache_destroy(qeth_core_header_cache); slab_err: root_device_unregister(qeth_core_root_dev); register_err: - driver_remove_file(&qeth_core_ccwgroup_driver.driver, - &driver_attr_group); -driver_err: - ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); -ccwgroup_err: - ccw_driver_unregister(&qeth_ccw_driver); -ccw_err: - QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc); qeth_unregister_dbf_views(); out_err: pr_err("Initializing the qeth device driver failed\n"); @@ -5595,13 +5577,11 @@ out_err: static void __exit qeth_core_exit(void) { - root_device_unregister(qeth_core_root_dev); - driver_remove_file(&qeth_core_ccwgroup_driver.driver, - &driver_attr_group); ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); ccw_driver_unregister(&qeth_ccw_driver); kmem_cache_destroy(qeth_qdio_outbuf_cache); kmem_cache_destroy(qeth_core_header_cache); + root_device_unregister(qeth_core_root_dev); qeth_unregister_dbf_views(); pr_info("core functions removed\n"); } diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c index 0a8e86c..f163af5 100644 --- a/drivers/s390/net/qeth_core_sys.c +++ b/drivers/s390/net/qeth_core_sys.c @@ -434,8 +434,8 @@ static ssize_t qeth_dev_layer2_store(struct device *dev, goto out; else { card->info.mac_bits = 0; - if (card->discipline.ccwgdriver) { - card->discipline.ccwgdriver->remove(card->gdev); + if (card->discipline) { + card->discipline->remove(card->gdev); qeth_core_free_discipline(card); } } @@ -444,7 +444,7 @@ static ssize_t qeth_dev_layer2_store(struct device *dev, if (rc) goto out; - rc = card->discipline.ccwgdriver->probe(card->gdev); + rc = card->discipline->setup(card->gdev); out: mutex_unlock(&card->discipline_mutex); return rc ? rc : count; @@ -693,7 +693,6 @@ static struct attribute *qeth_blkt_device_attrs[] = { &dev_attr_inter_jumbo.attr, NULL, }; - static struct attribute_group qeth_device_blkt_group = { .name = "blkt", .attrs = qeth_blkt_device_attrs, @@ -716,11 +715,16 @@ static struct attribute *qeth_device_attrs[] = { &dev_attr_hw_trap.attr, NULL, }; - static struct attribute_group qeth_device_attr_group = { .attrs = qeth_device_attrs, }; +const struct attribute_group *qeth_generic_attr_groups[] = { + &qeth_device_attr_group, + &qeth_device_blkt_group, + NULL, +}; + static struct attribute *qeth_osn_device_attrs[] = { &dev_attr_state.attr, &dev_attr_chpid.attr, @@ -730,37 +734,10 @@ static struct attribute *qeth_osn_device_attrs[] = { &dev_attr_recover.attr, NULL, }; - static struct attribute_group qeth_osn_device_attr_group = { .attrs = qeth_osn_device_attrs, }; - -int qeth_core_create_device_attributes(struct device *dev) -{ - int ret; - ret = sysfs_create_group(&dev->kobj, &qeth_device_attr_group); - if (ret) - return ret; - ret = sysfs_create_group(&dev->kobj, &qeth_device_blkt_group); - if (ret) - sysfs_remove_group(&dev->kobj, &qeth_device_attr_group); - - return 0; -} - -void qeth_core_remove_device_attributes(struct device *dev) -{ - sysfs_remove_group(&dev->kobj, &qeth_device_attr_group); - sysfs_remove_group(&dev->kobj, &qeth_device_blkt_group); -} - -int qeth_core_create_osn_attributes(struct device *dev) -{ - return sysfs_create_group(&dev->kobj, &qeth_osn_device_attr_group); -} - -void qeth_core_remove_osn_attributes(struct device *dev) -{ - sysfs_remove_group(&dev->kobj, &qeth_osn_device_attr_group); - return; -} +const struct attribute_group *qeth_osn_attr_groups[] = { + &qeth_osn_device_attr_group, + NULL, +}; diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 0e7c29d..4269865 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -882,12 +882,6 @@ static int qeth_l2_probe_device(struct ccwgroup_device *gdev) INIT_LIST_HEAD(&card->mc_list); card->options.layer2 = 1; card->info.hwtrap = 0; - card->discipline.start_poll = qeth_qdio_start_poll; - card->discipline.input_handler = (qdio_handler_t *) - qeth_qdio_input_handler; - card->discipline.output_handler = (qdio_handler_t *) - qeth_qdio_output_handler; - card->discipline.recover = qeth_l2_recover; return 0; } @@ -1227,8 +1221,12 @@ out: return rc; } -struct ccwgroup_driver qeth_l2_ccwgroup_driver = { - .probe = qeth_l2_probe_device, +struct qeth_discipline qeth_l2_discipline = { + .start_poll = qeth_qdio_start_poll, + .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, + .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, + .recover = qeth_l2_recover, + .setup = qeth_l2_probe_device, .remove = qeth_l2_remove_device, .set_online = qeth_l2_set_online, .set_offline = qeth_l2_set_offline, @@ -1237,7 +1235,7 @@ struct ccwgroup_driver qeth_l2_ccwgroup_driver = { .thaw = qeth_l2_pm_resume, .restore = qeth_l2_pm_resume, }; -EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver); +EXPORT_SYMBOL_GPL(qeth_l2_discipline); static int qeth_osn_send_control_data(struct qeth_card *card, int len, struct qeth_cmd_buffer *iob) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index e7ad032..7be5e97 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -3298,12 +3298,6 @@ static int qeth_l3_probe_device(struct ccwgroup_device *gdev) qeth_l3_create_device_attributes(&gdev->dev); card->options.layer2 = 0; card->info.hwtrap = 0; - card->discipline.start_poll = qeth_qdio_start_poll; - card->discipline.input_handler = (qdio_handler_t *) - qeth_qdio_input_handler; - card->discipline.output_handler = (qdio_handler_t *) - qeth_qdio_output_handler; - card->discipline.recover = qeth_l3_recover; return 0; } @@ -3578,8 +3572,12 @@ out: return rc; } -struct ccwgroup_driver qeth_l3_ccwgroup_driver = { - .probe = qeth_l3_probe_device, +struct qeth_discipline qeth_l3_discipline = { + .start_poll = qeth_qdio_start_poll, + .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, + .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, + .recover = qeth_l3_recover, + .setup = qeth_l3_probe_device, .remove = qeth_l3_remove_device, .set_online = qeth_l3_set_online, .set_offline = qeth_l3_set_offline, @@ -3588,7 +3586,7 @@ struct ccwgroup_driver qeth_l3_ccwgroup_driver = { .thaw = qeth_l3_pm_resume, .restore = qeth_l3_pm_resume, }; -EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver); +EXPORT_SYMBOL_GPL(qeth_l3_discipline); static int qeth_l3_ip_event(struct notifier_block *this, unsigned long event, void *ptr) |
