diff options
Diffstat (limited to 'arch/sparc')
34 files changed, 445 insertions, 679 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 8767e45..b42ba88 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -1,6 +1,6 @@ config 64BIT - bool "64-bit kernel" if ARCH = "sparc" - default ARCH = "sparc64" + bool "64-bit kernel" if "$(ARCH)" = "sparc" + default "$(ARCH)" = "sparc64" help SPARC is a family of RISC microprocessors designed and marketed by Sun Microsystems, incorporated. They are very widely found in Sun @@ -25,7 +25,6 @@ config SPARC select RTC_CLASS select RTC_DRV_M48T59 select RTC_SYSTOHC - select HAVE_DMA_API_DEBUG select HAVE_ARCH_JUMP_LABEL if SPARC64 select GENERIC_IRQ_SHOW select ARCH_WANT_IPC_PARSE_VERSION @@ -44,6 +43,8 @@ config SPARC select ARCH_HAS_SG_CHAIN select CPU_NO_EFFICIENT_FFS select LOCKDEP_SMALL if LOCKDEP + select NEED_DMA_MAP_STATE + select NEED_SG_DMA_LENGTH config SPARC32 def_bool !64BIT @@ -67,6 +68,7 @@ config SPARC64 select HAVE_SYSCALL_TRACEPOINTS select HAVE_CONTEXT_TRACKING select HAVE_DEBUG_KMEMLEAK + select IOMMU_HELPER select SPARSE_IRQ select RTC_DRV_CMOS select RTC_DRV_BQ4802 @@ -102,14 +104,6 @@ config ARCH_ATU bool default y if SPARC64 -config ARCH_DMA_ADDR_T_64BIT - bool - default y if ARCH_ATU - -config IOMMU_HELPER - bool - default y if SPARC64 - config STACKTRACE_SUPPORT bool default y if SPARC64 @@ -146,12 +140,6 @@ config ZONE_DMA bool default y if SPARC32 -config NEED_DMA_MAP_STATE - def_bool y - -config NEED_SG_DMA_LENGTH - def_bool y - config GENERIC_ISA_DMA bool default y if SPARC32 diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile index edac927..966a13d 100644 --- a/arch/sparc/Makefile +++ b/arch/sparc/Makefile @@ -39,7 +39,7 @@ else # sparc64 # -CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__ -m64 +CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__ LDFLAGS := -m elf64_sparc export BITS := 64 UTS_MACHINE := sparc64 diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h index 615283e..4eb51d2 100644 --- a/arch/sparc/include/asm/compat.h +++ b/arch/sparc/include/asm/compat.h @@ -11,7 +11,6 @@ typedef u32 compat_size_t; typedef s32 compat_ssize_t; -typedef s32 compat_time_t; typedef s32 compat_clock_t; typedef s32 compat_pid_t; typedef u16 __compat_uid_t; @@ -39,16 +38,6 @@ typedef u32 compat_ulong_t; typedef u64 compat_u64; typedef u32 compat_uptr_t; -struct compat_timespec { - compat_time_t tv_sec; - s32 tv_nsec; -}; - -struct compat_timeval { - compat_time_t tv_sec; - s32 tv_usec; -}; - struct compat_stat { compat_dev_t st_dev; compat_ino_t st_ino; @@ -168,6 +157,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) return (u32)(unsigned long)uptr; } +#ifdef CONFIG_COMPAT static inline void __user *arch_compat_alloc_user_space(long len) { struct pt_regs *regs = current_thread_info()->kregs; @@ -184,6 +174,7 @@ static inline void __user *arch_compat_alloc_user_space(long len) return (void __user *) usp; } +#endif struct compat_ipc64_perm { compat_key_t key; @@ -201,10 +192,10 @@ struct compat_ipc64_perm { struct compat_semid64_ds { struct compat_ipc64_perm sem_perm; - unsigned int __pad1; - compat_time_t sem_otime; - unsigned int __pad2; - compat_time_t sem_ctime; + unsigned int sem_otime_high; + unsigned int sem_otime; + unsigned int sem_ctime_high; + unsigned int sem_ctime; u32 sem_nsems; u32 __unused1; u32 __unused2; @@ -212,12 +203,12 @@ struct compat_semid64_ds { struct compat_msqid64_ds { struct compat_ipc64_perm msg_perm; - unsigned int __pad1; - compat_time_t msg_stime; - unsigned int __pad2; - compat_time_t msg_rtime; - unsigned int __pad3; - compat_time_t msg_ctime; + unsigned int msg_stime_high; + unsigned int msg_stime; + unsigned int msg_rtime_high; + unsigned int msg_rtime; + unsigned int msg_ctime_high; + unsigned int msg_ctime; unsigned int msg_cbytes; unsigned int msg_qnum; unsigned int msg_qbytes; @@ -229,12 +220,12 @@ struct compat_msqid64_ds { struct compat_shmid64_ds { struct compat_ipc64_perm shm_perm; - unsigned int __pad1; - compat_time_t shm_atime; - unsigned int __pad2; - compat_time_t shm_dtime; - unsigned int __pad3; - compat_time_t shm_ctime; + unsigned int shm_atime_high; + unsigned int shm_atime; + unsigned int shm_dtime_high; + unsigned int shm_dtime; + unsigned int shm_ctime_high; + unsigned int shm_ctime; compat_size_t shm_segsz; compat_pid_t shm_cpid; compat_pid_t shm_lpid; @@ -243,6 +234,7 @@ struct compat_shmid64_ds { unsigned int __unused2; }; +#ifdef CONFIG_COMPAT static inline int is_compat_task(void) { return test_thread_flag(TIF_32BIT); @@ -254,5 +246,6 @@ static inline bool in_compat_syscall(void) return pt_regs_trap_type(current_pt_regs()) == 0x110; } #define in_compat_syscall in_compat_syscall +#endif #endif /* _ASM_SPARC64_COMPAT_H */ diff --git a/arch/sparc/include/asm/hardirq_64.h b/arch/sparc/include/asm/hardirq_64.h index f565402..75b92bf 100644 --- a/arch/sparc/include/asm/hardirq_64.h +++ b/arch/sparc/include/asm/hardirq_64.h @@ -10,8 +10,9 @@ #include <asm/cpudata.h> #define __ARCH_IRQ_STAT -#define local_softirq_pending() \ - (local_cpu_data().__softirq_pending) + +#define local_softirq_pending_ref \ + __cpu_data.__softirq_pending void ack_bad_irq(unsigned int irq); diff --git a/arch/sparc/include/asm/iommu-common.h b/arch/sparc/include/asm/iommu-common.h new file mode 100644 index 0000000..802c90c --- /dev/null +++ b/arch/sparc/include/asm/iommu-common.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_IOMMU_COMMON_H +#define _LINUX_IOMMU_COMMON_H + +#include <linux/spinlock_types.h> +#include <linux/device.h> +#include <asm/page.h> + +#define IOMMU_POOL_HASHBITS 4 +#define IOMMU_NR_POOLS (1 << IOMMU_POOL_HASHBITS) +#define IOMMU_ERROR_CODE (~(unsigned long) 0) + +struct iommu_pool { + unsigned long start; + unsigned long end; + unsigned long hint; + spinlock_t lock; +}; + +struct iommu_map_table { + unsigned long table_map_base; + unsigned long table_shift; + unsigned long nr_pools; + void (*lazy_flush)(struct iommu_map_table *); + unsigned long poolsize; + struct iommu_pool pools[IOMMU_NR_POOLS]; + u32 flags; +#define IOMMU_HAS_LARGE_POOL 0x00000001 +#define IOMMU_NO_SPAN_BOUND 0x00000002 +#define IOMMU_NEED_FLUSH 0x00000004 + struct iommu_pool large_pool; + unsigned long *map; +}; + +extern void iommu_tbl_pool_init(struct iommu_map_table *iommu, + unsigned long num_entries, + u32 table_shift, + void (*lazy_flush)(struct iommu_map_table *), + bool large_pool, u32 npools, + bool skip_span_boundary_check); + +extern unsigned long iommu_tbl_range_alloc(struct device *dev, + struct iommu_map_table *iommu, + unsigned long npages, + unsigned long *handle, + unsigned long mask, + unsigned int align_order); + +extern void iommu_tbl_range_free(struct iommu_map_table *iommu, + u64 dma_addr, unsigned long npages, + unsigned long entry); + +#endif diff --git a/arch/sparc/include/asm/iommu_64.h b/arch/sparc/include/asm/iommu_64.h index 9ed6b54..0ef6ded 100644 --- a/arch/sparc/include/asm/iommu_64.h +++ b/arch/sparc/include/asm/iommu_64.h @@ -17,7 +17,7 @@ #define IOPTE_WRITE 0x0000000000000002UL #define IOMMU_NUM_CTXS 4096 -#include <linux/iommu-common.h> +#include <asm/iommu-common.h> struct iommu_arena { unsigned long *map; diff --git a/arch/sparc/include/asm/pci_32.h b/arch/sparc/include/asm/pci_32.h index 98917e4..cfc0ee9 100644 --- a/arch/sparc/include/asm/pci_32.h +++ b/arch/sparc/include/asm/pci_32.h @@ -17,10 +17,6 @@ #define PCI_IRQ_NONE 0xffffffff -/* Dynamic DMA mapping stuff. - */ -#define PCI_DMA_BUS_IS_PHYS (0) - #endif /* __KERNEL__ */ #ifndef CONFIG_LEON_PCI diff --git a/arch/sparc/include/asm/pci_64.h b/arch/sparc/include/asm/pci_64.h index 671274e..fac7781 100644 --- a/arch/sparc/include/asm/pci_64.h +++ b/arch/sparc/include/asm/pci_64.h @@ -17,12 +17,6 @@ #define PCI_IRQ_NONE 0xffffffff -/* The PCI address space does not equal the physical memory - * address space. The networking and block device layers use - * this boolean for bounce buffer decisions. - */ -#define PCI_DMA_BUS_IS_PHYS (0) - /* PCI IOMMU mapping bypass support. */ /* PCI 64-bit addressing works for all slots on all controller diff --git a/arch/sparc/include/uapi/asm/jsflash.h b/arch/sparc/include/uapi/asm/jsflash.h deleted file mode 100644 index 68c98a5..0000000 --- a/arch/sparc/include/uapi/asm/jsflash.h +++ /dev/null @@ -1,40 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -/* - * jsflash.h: OS Flash SIMM support for JavaStations. - * - * Copyright (C) 1999 Pete Zaitcev - */ - -#ifndef _SPARC_JSFLASH_H -#define _SPARC_JSFLASH_H - -#ifndef _SPARC_TYPES_H -#include <linux/types.h> -#endif - -/* - * Semantics of the offset is a full address. - * Hardcode it or get it from probe ioctl. - * - * We use full bus address, so that we would be - * automatically compatible with possible future systems. - */ - -#define JSFLASH_IDENT (('F'<<8)|54) -struct jsflash_ident_arg { - __u64 off; /* 0x20000000 is included */ - __u32 size; - char name[32]; /* With trailing zero */ -}; - -#define JSFLASH_ERASE (('F'<<8)|55) -/* Put 0 as argument, may be flags or sector number... */ - -#define JSFLASH_PROGRAM (('F'<<8)|56) -struct jsflash_program_arg { - __u64 data; /* char* for sparc and sparc64 */ - __u64 off; - __u32 size; -}; - -#endif /* _SPARC_JSFLASH_H */ diff --git a/arch/sparc/include/uapi/asm/msgbuf.h b/arch/sparc/include/uapi/asm/msgbuf.h index b601c4f..ffc46c2 100644 --- a/arch/sparc/include/uapi/asm/msgbuf.h +++ b/arch/sparc/include/uapi/asm/msgbuf.h @@ -8,25 +8,22 @@ * between kernel and user space. * * Pad space is left for: - * - 64-bit time_t to solve y2038 problem * - 2 miscellaneous 32-bit values */ - -#if defined(__sparc__) && defined(__arch64__) -# define PADDING(x) -#else -# define PADDING(x) unsigned int x; -#endif - - struct msqid64_ds { struct ipc64_perm msg_perm; - PADDING(__pad1) +#if defined(__sparc__) && defined(__arch64__) __kernel_time_t msg_stime; /* last msgsnd time */ - PADDING(__pad2) __kernel_time_t msg_rtime; /* last msgrcv time */ - PADDING(__pad3) __kernel_time_t msg_ctime; /* last change time */ +#else + unsigned long msg_stime_high; + unsigned long msg_stime; /* last msgsnd time */ + unsigned long msg_rtime_high; + unsigned long msg_rtime; /* last msgrcv time */ + unsigned long msg_ctime_high; + unsigned long msg_ctime; /* last change time */ +#endif unsigned long msg_cbytes; /* current number of bytes on queue */ unsigned long msg_qnum; /* number of messages in queue */ unsigned long msg_qbytes; /* max number of bytes on queue */ @@ -35,5 +32,4 @@ struct msqid64_ds { unsigned long __unused1; unsigned long __unused2; }; -#undef PADDING #endif /* _SPARC_MSGBUF_H */ diff --git a/arch/sparc/include/uapi/asm/oradax.h b/arch/sparc/include/uapi/asm/oradax.h index 7229519..4f6676f 100644 --- a/arch/sparc/include/uapi/asm/oradax.h +++ b/arch/sparc/include/uapi/asm/oradax.h @@ -3,7 +3,7 @@ * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or + * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, diff --git a/arch/sparc/include/uapi/asm/sembuf.h b/arch/sparc/include/uapi/asm/sembuf.h index f49b0ff..f3d309c 100644 --- a/arch/sparc/include/uapi/asm/sembuf.h +++ b/arch/sparc/include/uapi/asm/sembuf.h @@ -8,25 +8,23 @@ * between kernel and user space. * * Pad space is left for: - * - 64-bit time_t to solve y2038 problem * - 2 miscellaneous 32-bit values */ -#if defined(__sparc__) && defined(__arch64__) -# define PADDING(x) -#else -# define PADDING(x) unsigned int x; -#endif struct semid64_ds { struct ipc64_perm sem_perm; /* permissions .. see ipc.h */ - PADDING(__pad1) +#if defined(__sparc__) && defined(__arch64__) __kernel_time_t sem_otime; /* last semop time */ - PADDING(__pad2) __kernel_time_t sem_ctime; /* last change time */ +#else + unsigned long sem_otime_high; + unsigned long sem_otime; /* last semop time */ + unsigned long sem_ctime_high; + unsigned long sem_ctime; /* last change time */ +#endif unsigned long sem_nsems; /* no. of semaphores in array */ unsigned long __unused1; unsigned long __unused2; }; -#undef PADDING #endif /* _SPARC64_SEMBUF_H */ diff --git a/arch/sparc/include/uapi/asm/shmbuf.h b/arch/sparc/include/uapi/asm/shmbuf.h index 286631d..06618b8 100644 --- a/arch/sparc/include/uapi/asm/shmbuf.h +++ b/arch/sparc/include/uapi/asm/shmbuf.h @@ -8,24 +8,23 @@ * between kernel and user space. * * Pad space is left for: - * - 64-bit time_t to solve y2038 problem * - 2 miscellaneous 32-bit values */ -#if defined(__sparc__) && defined(__arch64__) -# define PADDING(x) -#else -# define PADDING(x) unsigned int x; -#endif - struct shmid64_ds { struct ipc64_perm shm_perm; /* operation perms */ - PADDING(__pad1) +#if defined(__sparc__) && defined(__arch64__) __kernel_time_t shm_atime; /* last attach time */ - PADDING(__pad2) __kernel_time_t shm_dtime; /* last detach time */ - PADDING(__pad3) __kernel_time_t shm_ctime; /* last change time */ +#else + unsigned long shm_atime_high; + unsigned long shm_atime; /* last attach time */ + unsigned long shm_dtime_high; + unsigned long shm_dtime; /* last detach time */ + unsigned long shm_ctime_high; + unsigned long shm_ctime; /* last change time */ +#endif size_t shm_segsz; /* size of segment (bytes) */ __kernel_pid_t shm_cpid; /* pid of creator */ __kernel_pid_t shm_lpid; /* pid of last operator */ @@ -46,6 +45,4 @@ struct shminfo64 { unsigned long __unused4; }; -#undef PADDING - #endif /* _SPARC_SHMBUF_H */ diff --git a/arch/sparc/include/uapi/asm/siginfo.h b/arch/sparc/include/uapi/asm/siginfo.h index 896ce44..e704955 100644 --- a/arch/sparc/include/uapi/asm/siginfo.h +++ b/arch/sparc/include/uapi/asm/siginfo.h @@ -18,13 +18,6 @@ #define SI_NOINFO 32767 /* no information in siginfo_t */ /* - * SIGFPE si_codes - */ -#ifdef __KERNEL__ -#define FPE_FIXME 0 /* Broken dup of SI_USER */ -#endif /* __KERNEL__ */ - -/* * SIGEMT si_codes */ #define EMT_TAGOVF 1 /* tag overflow */ diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 76cb577..cf86408 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -59,7 +59,7 @@ obj-$(CONFIG_SPARC32) += leon_pmc.o obj-$(CONFIG_SPARC64) += reboot.o obj-$(CONFIG_SPARC64) += sysfs.o -obj-$(CONFIG_SPARC64) += iommu.o +obj-$(CONFIG_SPARC64) += iommu.o iommu-common.o obj-$(CONFIG_SPARC64) += central.o obj-$(CONFIG_SPARC64) += starfire.o obj-$(CONFIG_SPARC64) += power.o @@ -74,8 +74,6 @@ obj-$(CONFIG_SPARC64) += pcr.o obj-$(CONFIG_SPARC64) += nmi.o obj-$(CONFIG_SPARC64_SMP) += cpumap.o -obj-y += dma.o - obj-$(CONFIG_PCIC_PCI) += pcic.o obj-$(CONFIG_LEON_PCI) += leon_pci.o obj-$(CONFIG_SPARC_GRPCI2)+= leon_pci_grpci2.o diff --git a/arch/sparc/kernel/dma.c b/arch/sparc/kernel/dma.c deleted file mode 100644 index f73e759..0000000 --- a/arch/sparc/kernel/dma.c +++ /dev/null @@ -1,13 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/kernel.h> -#include <linux/dma-mapping.h> -#include <linux/dma-debug.h> - -#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 15) - -static int __init dma_init(void) -{ - dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES); - return 0; -} -fs_initcall(dma_init); diff --git a/arch/sparc/kernel/iommu-common.c b/arch/sparc/kernel/iommu-common.c new file mode 100644 index 0000000..59cb166 --- /dev/null +++ b/arch/sparc/kernel/iommu-common.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * IOMMU mmap management and range allocation functions. + * Based almost entirely upon the powerpc iommu allocator. + */ + +#include <linux/export.h> +#include <linux/bitmap.h> +#include <linux/bug.h> +#include <linux/iommu-helper.h> +#include <linux/dma-mapping.h> +#include <linux/hash.h> +#include <asm/iommu-common.h> + +static unsigned long iommu_large_alloc = 15; + +static DEFINE_PER_CPU(unsigned int, iommu_hash_common); + +static inline bool need_flush(struct iommu_map_table *iommu) +{ + return ((iommu->flags & IOMMU_NEED_FLUSH) != 0); +} + +static inline void set_flush(struct iommu_map_table *iommu) +{ + iommu->flags |= IOMMU_NEED_FLUSH; +} + +static inline void clear_flush(struct iommu_map_table *iommu) +{ + iommu->flags &= ~IOMMU_NEED_FLUSH; +} + +static void setup_iommu_pool_hash(void) +{ + unsigned int i; + static bool do_once; + + if (do_once) + return; + do_once = true; + for_each_possible_cpu(i) + per_cpu(iommu_hash_common, i) = hash_32(i, IOMMU_POOL_HASHBITS); +} + +/* + * Initialize iommu_pool entries for the iommu_map_table. `num_entries' + * is the number of table entries. If `large_pool' is set to true, + * the top 1/4 of the table will be set aside for pool allocations + * of more than iommu_large_alloc pages. + */ +void iommu_tbl_pool_init(struct iommu_map_table *iommu, + unsigned long num_entries, + u32 table_shift, + void (*lazy_flush)(struct iommu_map_table *), + bool large_pool, u32 npools, + bool skip_span_boundary_check) +{ + unsigned int start, i; + struct iommu_pool *p = &(iommu->large_pool); + + setup_iommu_pool_hash(); + if (npools == 0) + iommu->nr_pools = IOMMU_NR_POOLS; + else + iommu->nr_pools = npools; + BUG_ON(npools > IOMMU_NR_POOLS); + + iommu->table_shift = table_shift; + iommu->lazy_flush = lazy_flush; + start = 0; + if (skip_span_boundary_check) + iommu->flags |= IOMMU_NO_SPAN_BOUND; + if (large_pool) + iommu->flags |= IOMMU_HAS_LARGE_POOL; + + if (!large_pool) + iommu->poolsize = num_entries/iommu->nr_pools; + else + iommu->poolsize = (num_entries * 3 / 4)/iommu->nr_pools; + for (i = 0; i < iommu->nr_pools; i++) { + spin_lock_init(&(iommu->pools[i].lock)); + iommu->pools[i].start = start; + iommu->pools[i].hint = start; + start += iommu->poolsize; /* start for next pool */ + iommu->pools[i].end = start - 1; + } + if (!large_pool) + return; + /* initialize large_pool */ + spin_lock_init(&(p->lock)); + p->start = start; + p->hint = p->start; + p->end = num_entries; +} + +unsigned long iommu_tbl_range_alloc(struct device *dev, + struct iommu_map_table *iommu, + unsigned long npages, + unsigned long *handle, + unsigned long mask, + unsigned int align_order) +{ + unsigned int pool_hash = __this_cpu_read(iommu_hash_common); + unsigned long n, end, start, limit, boundary_size; + struct iommu_pool *pool; + int pass = 0; + unsigned int pool_nr; + unsigned int npools = iommu->nr_pools; + unsigned long flags; + bool large_pool = ((iommu->flags & IOMMU_HAS_LARGE_POOL) != 0); + bool largealloc = (large_pool && npages > iommu_large_alloc); + unsigned long shift; + unsigned long align_mask = 0; + + if (align_order > 0) + align_mask = ~0ul >> (BITS_PER_LONG - align_order); + + /* Sanity check */ + if (unlikely(npages == 0)) { + WARN_ON_ONCE(1); + return IOMMU_ERROR_CODE; + } + + if (largealloc) { + pool = &(iommu->large_pool); + pool_nr = 0; /* to keep compiler happy */ + } else { + /* pick out pool_nr */ + pool_nr = pool_hash & (npools - 1); + pool = &(iommu->pools[pool_nr]); + } + spin_lock_irqsave(&pool->lock, flags); + + again: + if (pass == 0 && handle && *handle && + (*handle >= pool->start) && (*handle < pool->end)) + start = *handle; + else + start = pool->hint; + + limit = pool->end; + + /* The case below can happen if we have a small segment appended + * to a large, or when the previous alloc was at the very end of + * the available space. If so, go back to the beginning. If a + * flush is needed, it will get done based on the return value + * from iommu_area_alloc() below. + */ + if (start >= limit) + start = pool->start; + shift = iommu->table_map_base >> iommu->table_shift; + if (limit + shift > mask) { + limit = mask - shift + 1; + /* If we're constrained on address range, first try + * at the masked hint to avoid O(n) search complexity, + * but on second pass, start at 0 in pool 0. + */ + if ((start & mask) >= limit || pass > 0) { + spin_unlock(&(pool->lock)); + pool = &(iommu->pools[0]); + spin_lock(&(pool->lock)); + start = pool->start; + } else { + start &= mask; + } + } + + if (dev) + boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1, + 1 << iommu->table_shift); + else + boundary_size = ALIGN(1ULL << 32, 1 << iommu->table_shift); + + boundary_size = boundary_size >> iommu->table_shift; + /* + * if the skip_span_boundary_check had been set during init, we set + * things up so that iommu_is_span_boundary() merely checks if the + * (index + npages) < num_tsb_entries + */ + if ((iommu->flags & IOMMU_NO_SPAN_BOUND) != 0) { + shift = 0; + boundary_size = iommu->poolsize * iommu->nr_pools; + } + n = iommu_area_alloc(iommu->map, limit, start, npages, shift, + boundary_size, align_mask); + if (n == -1) { + if (likely(pass == 0)) { + /* First failure, rescan from the beginning. */ + pool->hint = pool->start; + set_flush(iommu); + pass++; + goto again; + } else if (!largealloc && pass <= iommu->nr_pools) { + spin_unlock(&(pool->lock)); + pool_nr = (pool_nr + 1) & (iommu->nr_pools - 1); + pool = &(iommu->pools[pool_nr]); + spin_lock(&(pool->lock)); + pool->hint = pool->start; + set_flush(iommu); + pass++; + goto again; + } else { + /* give up */ + n = IOMMU_ERROR_CODE; + goto bail; + } + } + if (iommu->lazy_flush && + (n < pool->hint || need_flush(iommu))) { + clear_flush(iommu); + iommu->lazy_flush(iommu); + } + + end = n + npages; + pool->hint = end; + + /* Update handle for SG allocations */ + if (handle) + *handle = end; +bail: + spin_unlock_irqrestore(&(pool->lock), flags); + + return n; +} + +static struct iommu_pool *get_pool(struct iommu_map_table *tbl, + unsigned long entry) +{ + struct iommu_pool *p; + unsigned long largepool_start = tbl->large_pool.start; + bool large_pool = ((tbl->flags & IOMMU_HAS_LARGE_POOL) != 0); + + /* The large pool is the last pool at the top of the table */ + if (large_pool && entry >= largepool_start) { + p = &tbl->large_pool; + } else { + unsigned int pool_nr = entry / tbl->poolsize; + + BUG_ON(pool_nr >= tbl->nr_pools); + p = &tbl->pools[pool_nr]; + } + return p; +} + +/* Caller supplies the index of the entry into the iommu map table + * itself when the mapping from dma_addr to the entry is not the + * default addr->entry mapping below. + */ +void iommu_tbl_range_free(struct iommu_map_table *iommu, u64 dma_addr, + unsigned long npages, unsigned long entry) +{ + struct iommu_pool *pool; + unsigned long flags; + unsigned long shift = iommu->table_shift; + + if (entry == IOMMU_ERROR_CODE) /* use default addr->entry mapping */ + entry = (dma_addr - iommu->table_map_base) >> shift; + pool = get_pool(iommu, entry); + + spin_lock_irqsave(&(pool->lock), flags); + bitmap_clear(iommu->map, entry, npages); + spin_unlock_irqrestore(&(pool->lock), flags); +} diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index b08dc34..40d008b 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -14,7 +14,7 @@ #include <linux/errno.h> #include <linux/iommu-helper.h> #include <linux/bitmap.h> -#include <linux/iommu-common.h> +#include <asm/iommu-common.h> #ifdef CONFIG_PCI #include <linux/pci.h> diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index 3bcef9c..cca9134 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -678,25 +678,14 @@ static int sparc_io_proc_show(struct seq_file *m, void *v) return 0; } - -static int sparc_io_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, sparc_io_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations sparc_io_proc_fops = { - .owner = THIS_MODULE, - .open = sparc_io_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; #endif /* CONFIG_PROC_FS */ static void register_proc_sparc_ioport(void) { #ifdef CONFIG_PROC_FS - proc_create_data("io_map", 0, NULL, &sparc_io_proc_fops, &sparc_iomap); - proc_create_data("dvma_map", 0, NULL, &sparc_io_proc_fops, &_sparc_dvma); + proc_create_single_data("io_map", 0, NULL, sparc_io_proc_show, + &sparc_iomap); + proc_create_single_data("dvma_map", 0, NULL, sparc_io_proc_show, + &_sparc_dvma); #endif } diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index 86b625f..c0fa3ef 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -16,7 +16,7 @@ #include <linux/list.h> #include <linux/init.h> #include <linux/bitmap.h> -#include <linux/iommu-common.h> +#include <asm/iommu-common.h> #include <asm/hypervisor.h> #include <asm/iommu.h> diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 2493672..565d9ac 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -16,7 +16,7 @@ #include <linux/export.h> #include <linux/log2.h> #include <linux/of_device.h> -#include <linux/iommu-common.h> +#include <asm/iommu-common.h> #include <asm/iommu.h> #include <asm/irq.h> diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index 454a8af..6c08608 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -518,14 +518,7 @@ void synchronize_user_stack(void) static void stack_unaligned(unsigned long sp) { - siginfo_t info; - - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRALN; - info.si_addr = (void __user *) sp; - info.si_trapno = 0; - force_sig_info(SIGBUS, &info, current); + force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) sp, 0, current); } void fault_in_user_windows(void) diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index e8c3cb6..7f3d9c5 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -147,17 +147,11 @@ SYSCALL_DEFINE0(nis_syscall) asmlinkage void sparc_breakpoint (struct pt_regs *regs) { - siginfo_t info; #ifdef DEBUG_SPARC_BREAKPOINT printk ("TRAP: Entering kernel PC=%x, nPC=%x\n", regs->pc, regs->npc); #endif - info.si_signo = SIGTRAP; - info.si_errno = 0; - info.si_code = TRAP_BRKPT; - info.si_addr = (void __user *)regs->pc; - info.si_trapno = 0; - force_sig_info(SIGTRAP, &info, current); + force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc, 0, current); #ifdef DEBUG_SPARC_BREAKPOINT printk ("TRAP: Returning to space: PC=%x nPC=%x\n", regs->pc, regs->npc); diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 9ef8de6..7e49bbc9 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -502,7 +502,6 @@ SYSCALL_DEFINE0(nis_syscall) asmlinkage void sparc_breakpoint(struct pt_regs *regs) { enum ctx_state prev_state = exception_enter(); - siginfo_t info; if (test_thread_flag(TIF_32BIT)) { regs->tpc &= 0xffffffff; @@ -511,12 +510,7 @@ asmlinkage void sparc_breakpoint(struct pt_regs *regs) #ifdef DEBUG_SPARC_BREAKPOINT printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc); #endif - info.si_signo = SIGTRAP; - info.si_errno = 0; - info.si_code = TRAP_BRKPT; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = 0; - force_sig_info(SIGTRAP, &info, current); + force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->tpc, 0, current); #ifdef DEBUG_SPARC_BREAKPOINT printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc); #endif diff --git a/arch/sparc/kernel/traps_32.c b/arch/sparc/kernel/traps_32.c index b1ed763..bcdfc61 100644 --- a/arch/sparc/kernel/traps_32.c +++ b/arch/sparc/kernel/traps_32.c @@ -93,8 +93,6 @@ void __noreturn die_if_kernel(char *str, struct pt_regs *regs) void do_hw_interrupt(struct pt_regs *regs, unsigned long type) { - siginfo_t info; - if(type < 0x80) { /* Sun OS's puke from bad traps, Linux survives! */ printk("Unimplemented Sparc TRAP, type = %02lx\n", type); @@ -104,19 +102,13 @@ void do_hw_interrupt(struct pt_regs *regs, unsigned long type) if(regs->psr & PSR_PS) die_if_kernel("Kernel bad trap", regs); - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLTRP; - info.si_addr = (void __user *)regs->pc; - info.si_trapno = type - 0x80; - force_sig_info(SIGILL, &info, current); + force_sig_fault(SIGILL, ILL_ILLTRP, + (void __user *)regs->pc, type - 0x80, current); } void do_illegal_instruction(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - if(psr & PSR_PS) die_if_kernel("Kernel illegal instruction", regs); #ifdef TRAP_DEBUG @@ -124,27 +116,15 @@ void do_illegal_instruction(struct pt_regs *regs, unsigned long pc, unsigned lon regs->pc, *(unsigned long *)regs->pc); #endif - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLOPC; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - send_sig_info(SIGILL, &info, current); + send_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc, 0, current); } void do_priv_instruction(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - if(psr & PSR_PS) die_if_kernel("Penguin instruction from Penguin mode??!?!", regs); - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_PRVOPC; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - send_sig_info(SIGILL, &info, current); + send_sig_fault(SIGILL, ILL_PRVOPC, (void __user *)pc, 0, current); } /* XXX User may want to be allowed to do this. XXX */ @@ -152,8 +132,6 @@ void do_priv_instruction(struct pt_regs *regs, unsigned long pc, unsigned long n void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - if(regs->psr & PSR_PS) { printk("KERNEL MNA at pc %08lx npc %08lx called by %08lx\n", pc, npc, regs->u_regs[UREG_RETPC]); @@ -165,12 +143,9 @@ void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc, unsigned lon instruction_dump ((unsigned long *) regs->pc); printk ("do_MNA!\n"); #endif - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRALN; - info.si_addr = /* FIXME: Should dig out mna address */ (void *)0; - info.si_trapno = 0; - send_sig_info(SIGBUS, &info, current); + send_sig_fault(SIGBUS, BUS_ADRALN, + /* FIXME: Should dig out mna address */ (void *)0, + 0, current); } static unsigned long init_fsr = 0x0UL; @@ -226,9 +201,9 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { static int calls; - siginfo_t info; unsigned long fsr; int ret = 0; + int code; #ifndef CONFIG_SMP struct task_struct *fpt = last_task_used_math; #else @@ -303,24 +278,20 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc, } fsr = fpt->thread.fsr; - info.si_signo = SIGFPE; - info.si_errno = 0; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - info.si_code = FPE_FIXME; + code = FPE_FLTUNK; if ((fsr & 0x1c000) == (1 << 14)) { if (fsr & 0x10) - info.si_code = FPE_FLTINV; + code = FPE_FLTINV; else if (fsr & 0x08) - info.si_code = FPE_FLTOVF; + code = FPE_FLTOVF; else if (fsr & 0x04) - info.si_code = FPE_FLTUND; + code = FPE_FLTUND; else if (fsr & 0x02) - info.si_code = FPE_FLTDIV; + code = FPE_FLTDIV; else if (fsr & 0x01) - info.si_code = FPE_FLTRES; + code = FPE_FLTRES; } - send_sig_info(SIGFPE, &info, fpt); + send_sig_fault(SIGFPE, code, (void __user *)pc, 0, fpt); #ifndef CONFIG_SMP last_task_used_math = NULL; #endif @@ -332,16 +303,9 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc, void handle_tag_overflow(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - if(psr & PSR_PS) die_if_kernel("Penguin overflow trap from kernel mode", regs); - info.si_signo = SIGEMT; - info.si_errno = 0; - info.si_code = EMT_TAGOVF; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - send_sig_info(SIGEMT, &info, current); + send_sig_fault(SIGEMT, EMT_TAGOVF, (void __user *)pc, 0, current); } void handle_watchpoint(struct pt_regs *regs, unsigned long pc, unsigned long npc, @@ -359,61 +323,33 @@ void handle_watchpoint(struct pt_regs *regs, unsigned long pc, unsigned long npc void handle_reg_access(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - #ifdef TRAP_DEBUG printk("Register Access Exception at PC %08lx NPC %08lx PSR %08lx\n", pc, npc, psr); #endif - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_OBJERR; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - force_sig_info(SIGBUS, &info, current); + force_sig_fault(SIGBUS, BUS_OBJERR, (void __user *)pc, 0, current); } void handle_cp_disabled(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_COPROC; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - send_sig_info(SIGILL, &info, current); + send_sig_fault(SIGILL, ILL_COPROC, (void __user *)pc, 0, current); } void handle_cp_exception(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - #ifdef TRAP_DEBUG printk("Co-Processor Exception at PC %08lx NPC %08lx PSR %08lx\n", pc, npc, psr); #endif - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_COPROC; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - send_sig_info(SIGILL, &info, current); + send_sig_fault(SIGILL, ILL_COPROC, (void __user *)pc, 0, current); } void handle_hw_divzero(struct pt_regs *regs, unsigned long pc, unsigned long npc, unsigned long psr) { - siginfo_t info; - - info.si_signo = SIGFPE; - info.si_errno = 0; - info.si_code = FPE_INTDIV; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - send_sig_info(SIGFPE, &info, current); + send_sig_fault(SIGFPE, FPE_INTDIV, (void __user *)pc, 0, current); } #ifdef CONFIG_DEBUG_BUGVERBOSE diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index 462a21a..aa624ed 100644 --- a/arch/sparc/kernel/traps_64.c +++ b/arch/sparc/kernel/traps_64.c @@ -87,7 +87,6 @@ static void dump_tl1_traplog(struct tl1_traplog *p) void bad_trap(struct pt_regs *regs, long lvl) { char buffer[36]; - siginfo_t info; if (notify_die(DIE_TRAP, "bad trap", regs, 0, lvl, SIGTRAP) == NOTIFY_STOP) @@ -107,12 +106,8 @@ void bad_trap(struct pt_regs *regs, long lvl) regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLTRP; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = lvl; - force_sig_info(SIGILL, &info, current); + force_sig_fault(SIGILL, ILL_ILLTRP, + (void __user *)regs->tpc, lvl, current); } void bad_trap_tl1(struct pt_regs *regs, long lvl) @@ -191,7 +186,6 @@ EXPORT_SYMBOL_GPL(unregister_dimm_printer); void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar) { enum ctx_state prev_state = exception_enter(); - siginfo_t info; if (notify_die(DIE_TRAP, "instruction access exception", regs, 0, 0x8, SIGTRAP) == NOTIFY_STOP) @@ -206,12 +200,8 @@ void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, un regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGSEGV; - info.si_errno = 0; - info.si_code = SEGV_MAPERR; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = 0; - force_sig_info(SIGSEGV, &info, current); + force_sig_fault(SIGSEGV, SEGV_MAPERR, + (void __user *)regs->tpc, 0, current); out: exception_exit(prev_state); } @@ -230,7 +220,6 @@ void sun4v_insn_access_exception(struct pt_regs *regs, unsigned long addr, unsig { unsigned short type = (type_ctx >> 16); unsigned short ctx = (type_ctx & 0xffff); - siginfo_t info; if (notify_die(DIE_TRAP, "instruction access exception", regs, 0, 0x8, SIGTRAP) == NOTIFY_STOP) @@ -247,12 +236,7 @@ void sun4v_insn_access_exception(struct pt_regs *regs, unsigned long addr, unsig regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGSEGV; - info.si_errno = 0; - info.si_code = SEGV_MAPERR; - info.si_addr = (void __user *) addr; - info.si_trapno = 0; - force_sig_info(SIGSEGV, &info, current); + force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *) addr, 0, current); } void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx) @@ -307,7 +291,6 @@ bool is_no_fault_exception(struct pt_regs *regs) void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar) { enum ctx_state prev_state = exception_enter(); - siginfo_t info; if (notify_die(DIE_TRAP, "data access exception", regs, 0, 0x30, SIGTRAP) == NOTIFY_STOP) @@ -338,12 +321,7 @@ void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, un if (is_no_fault_exception(regs)) return; - info.si_signo = SIGSEGV; - info.si_errno = 0; - info.si_code = SEGV_MAPERR; - info.si_addr = (void __user *)sfar; - info.si_trapno = 0; - force_sig_info(SIGSEGV, &info, current); + force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)sfar, 0, current); out: exception_exit(prev_state); } @@ -559,8 +537,6 @@ static void spitfire_cee_log(unsigned long afsr, unsigned long afar, unsigned lo static void spitfire_ue_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long tt, int tl1, struct pt_regs *regs) { - siginfo_t info; - printk(KERN_WARNING "CPU[%d]: Uncorrectable Error AFSR[%lx] " "AFAR[%lx] UDBL[%lx] UDBH[%ld] TT[%lx] TL>1[%d]\n", smp_processor_id(), afsr, afar, udbl, udbh, tt, tl1); @@ -595,12 +571,7 @@ static void spitfire_ue_log(unsigned long afsr, unsigned long afar, unsigned lon regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_OBJERR; - info.si_addr = (void *)0; - info.si_trapno = 0; - force_sig_info(SIGBUS, &info, current); + force_sig_fault(SIGBUS, BUS_OBJERR, (void *)0, 0, current); } void spitfire_access_error(struct pt_regs *regs, unsigned long status_encoded, unsigned long afar) @@ -2190,7 +2161,6 @@ bool sun4v_nonresum_error_user_handled(struct pt_regs *regs, if (attrs & SUN4V_ERR_ATTRS_MEMORY) { unsigned long addr = ent->err_raddr; - siginfo_t info; if (addr == ~(u64)0) { /* This seems highly unlikely to ever occur */ @@ -2211,21 +2181,13 @@ bool sun4v_nonresum_error_user_handled(struct pt_regs *regs, addr += PAGE_SIZE; } } - info.si_signo = SIGKILL; - info.si_errno = 0; - info.si_trapno = 0; - force_sig_info(info.si_signo, &info, current); + force_sig(SIGKILL, current); return true; } if (attrs & SUN4V_ERR_ATTRS_PIO) { - siginfo_t info; - - info.si_signo = SIGBUS; - info.si_code = BUS_ADRERR; - info.si_addr = (void __user *)sun4v_get_vaddr(regs); - force_sig_info(info.si_signo, &info, current); - + force_sig_fault(SIGBUS, BUS_ADRERR, + (void __user *)sun4v_get_vaddr(regs), 0, current); return true; } @@ -2362,30 +2324,27 @@ static void do_fpe_common(struct pt_regs *regs) regs->tnpc += 4; } else { unsigned long fsr = current_thread_info()->xfsr[0]; - siginfo_t info; + int code; if (test_thread_flag(TIF_32BIT)) { regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGFPE; - info.si_errno = 0; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = 0; - info.si_code = FPE_FIXME; + code = FPE_FLTUNK; if ((fsr & 0x1c000) == (1 << 14)) { if (fsr & 0x10) - info.si_code = FPE_FLTINV; + code = FPE_FLTINV; else if (fsr & 0x08) - info.si_code = FPE_FLTOVF; + code = FPE_FLTOVF; else if (fsr & 0x04) - info.si_code = FPE_FLTUND; + code = FPE_FLTUND; else if (fsr & 0x02) - info.si_code = FPE_FLTDIV; + code = FPE_FLTDIV; else if (fsr & 0x01) - info.si_code = FPE_FLTRES; + code = FPE_FLTRES; } - force_sig_info(SIGFPE, &info, current); + force_sig_fault(SIGFPE, code, + (void __user *)regs->tpc, 0, current); } } @@ -2428,7 +2387,6 @@ out: void do_tof(struct pt_regs *regs) { enum ctx_state prev_state = exception_enter(); - siginfo_t info; if (notify_die(DIE_TRAP, "tagged arithmetic overflow", regs, 0, 0x26, SIGEMT) == NOTIFY_STOP) @@ -2440,12 +2398,8 @@ void do_tof(struct pt_regs *regs) regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGEMT; - info.si_errno = 0; - info.si_code = EMT_TAGOVF; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = 0; - force_sig_info(SIGEMT, &info, current); + force_sig_fault(SIGEMT, EMT_TAGOVF, + (void __user *)regs->tpc, 0, current); out: exception_exit(prev_state); } @@ -2453,7 +2407,6 @@ out: void do_div0(struct pt_regs *regs) { enum ctx_state prev_state = exception_enter(); - siginfo_t info; if (notify_die(DIE_TRAP, "integer division by zero", regs, 0, 0x28, SIGFPE) == NOTIFY_STOP) @@ -2465,12 +2418,8 @@ void do_div0(struct pt_regs *regs) regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGFPE; - info.si_errno = 0; - info.si_code = FPE_INTDIV; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = 0; - force_sig_info(SIGFPE, &info, current); + force_sig_fault(SIGFPE, FPE_INTDIV, + (void __user *)regs->tpc, 0, current); out: exception_exit(prev_state); } @@ -2632,7 +2581,6 @@ void do_illegal_instruction(struct pt_regs *regs) unsigned long pc = regs->tpc; unsigned long tstate = regs->tstate; u32 insn; - siginfo_t info; if (notify_die(DIE_TRAP, "illegal instruction", regs, 0, 0x10, SIGILL) == NOTIFY_STOP) @@ -2666,12 +2614,7 @@ void do_illegal_instruction(struct pt_regs *regs) } } } - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLOPC; - info.si_addr = (void __user *)pc; - info.si_trapno = 0; - force_sig_info(SIGILL, &info, current); + force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc, 0, current); out: exception_exit(prev_state); } @@ -2679,7 +2622,6 @@ out: void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr) { enum ctx_state prev_state = exception_enter(); - siginfo_t info; if (notify_die(DIE_TRAP, "memory address unaligned", regs, 0, 0x34, SIGSEGV) == NOTIFY_STOP) @@ -2692,20 +2634,13 @@ void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned lo if (is_no_fault_exception(regs)) return; - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRALN; - info.si_addr = (void __user *)sfar; - info.si_trapno = 0; - force_sig_info(SIGBUS, &info, current); + force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)sfar, 0, current); out: exception_exit(prev_state); } void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx) { - siginfo_t info; - if (notify_die(DIE_TRAP, "memory address unaligned", regs, 0, 0x34, SIGSEGV) == NOTIFY_STOP) return; @@ -2717,12 +2652,7 @@ void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_c if (is_no_fault_exception(regs)) return; - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRALN; - info.si_addr = (void __user *) addr; - info.si_trapno = 0; - force_sig_info(SIGBUS, &info, current); + force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) addr, 0, current); } /* sun4v_mem_corrupt_detect_precise() - Handle precise exception on an ADI @@ -2775,7 +2705,6 @@ void sun4v_mem_corrupt_detect_precise(struct pt_regs *regs, unsigned long addr, void do_privop(struct pt_regs *regs) { enum ctx_state prev_state = exception_enter(); - siginfo_t info; if (notify_die(DIE_TRAP, "privileged operation", regs, 0, 0x11, SIGILL) == NOTIFY_STOP) @@ -2785,12 +2714,8 @@ void do_privop(struct pt_regs *regs) regs->tpc &= 0xffffffff; regs->tnpc &= 0xffffffff; } - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_PRVOPC; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = 0; - force_sig_info(SIGILL, &info, current); + force_sig_fault(SIGILL, ILL_PRVOPC, + (void __user *)regs->tpc, 0, current); out: exception_exit(prev_state); } diff --git a/arch/sparc/kernel/unaligned_32.c b/arch/sparc/kernel/unaligned_32.c index 7642d7e..64ac8c0 100644 --- a/arch/sparc/kernel/unaligned_32.c +++ b/arch/sparc/kernel/unaligned_32.c @@ -311,14 +311,9 @@ static inline int ok_for_user(struct pt_regs *regs, unsigned int insn, static void user_mna_trap_fault(struct pt_regs *regs, unsigned int insn) { - siginfo_t info; - - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRALN; - info.si_addr = (void __user *)safe_compute_effective_address(regs, insn); - info.si_trapno = 0; - send_sig_info(SIGBUS, &info, current); + send_sig_fault(SIGBUS, BUS_ADRALN, + (void __user *)safe_compute_effective_address(regs, insn), + 0, current); } asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn) diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c index 1a0fa10..32bae68 100644 --- a/arch/sparc/kernel/vio.c +++ b/arch/sparc/kernel/vio.c @@ -403,7 +403,7 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp, if (err) { printk(KERN_ERR "VIO: Could not register device %s, err=%d\n", dev_name(&vdev->dev), err); - kfree(vdev); + put_device(&vdev->dev); return NULL; } if (vdev->dp) diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c index a8103a8..9f75b64 100644 --- a/arch/sparc/mm/fault_32.c +++ b/arch/sparc/mm/fault_32.c @@ -127,19 +127,11 @@ show_signal_msg(struct pt_regs *regs, int sig, int code, static void __do_fault_siginfo(int code, int sig, struct pt_regs *regs, unsigned long addr) { - siginfo_t info; - - info.si_signo = sig; - info.si_code = code; - info.si_errno = 0; - info.si_addr = (void __user *) addr; - info.si_trapno = 0; - if (unlikely(show_unhandled_signals)) - show_signal_msg(regs, sig, info.si_code, + show_signal_msg(regs, sig, code, addr, current); - force_sig_info (sig, &info, current); + force_sig_fault(sig, code, (void __user *) addr, 0, current); } static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault) diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c index 41363f4..63166fc 100644 --- a/arch/sparc/mm/fault_64.c +++ b/arch/sparc/mm/fault_64.c @@ -170,11 +170,7 @@ static void do_fault_siginfo(int code, int sig, struct pt_regs *regs, int fault_code) { unsigned long addr; - siginfo_t info; - info.si_code = code; - info.si_signo = sig; - info.si_errno = 0; if (fault_code & FAULT_CODE_ITLB) { addr = regs->tpc; } else { @@ -187,13 +183,11 @@ static void do_fault_siginfo(int code, int sig, struct pt_regs *regs, else addr = fault_addr; } - info.si_addr = (void __user *) addr; - info.si_trapno = 0; if (unlikely(show_unhandled_signals)) show_signal_msg(regs, sig, code, addr, current); - force_sig_info(sig, &info, current); + force_sig_fault(sig, code, (void __user *) addr, 0, current); } static unsigned int get_fault_insn(struct pt_regs *regs, unsigned int insn) diff --git a/arch/sparc/net/Makefile b/arch/sparc/net/Makefile index 76fa8e9..d32aac3 100644 --- a/arch/sparc/net/Makefile +++ b/arch/sparc/net/Makefile @@ -1,4 +1,7 @@ # # Arch-specific network modules # -obj-$(CONFIG_BPF_JIT) += bpf_jit_asm_$(BITS).o bpf_jit_comp_$(BITS).o +obj-$(CONFIG_BPF_JIT) += bpf_jit_comp_$(BITS).o +ifeq ($(BITS),32) +obj-$(CONFIG_BPF_JIT) += bpf_jit_asm_32.o +endif diff --git a/arch/sparc/net/bpf_jit_64.h b/arch/sparc/net/bpf_jit_64.h index 428f7fd..fbc836f 100644 --- a/arch/sparc/net/bpf_jit_64.h +++ b/arch/sparc/net/bpf_jit_64.h @@ -33,35 +33,6 @@ #define I5 0x1d #define FP 0x1e #define I7 0x1f - -#define r_SKB L0 -#define r_HEADLEN L4 -#define r_SKB_DATA L5 -#define r_TMP G1 -#define r_TMP2 G3 - -/* assembly code in arch/sparc/net/bpf_jit_asm_64.S */ -extern u32 bpf_jit_load_word[]; -extern u32 bpf_jit_load_half[]; -extern u32 bpf_jit_load_byte[]; -extern u32 bpf_jit_load_byte_msh[]; -extern u32 bpf_jit_load_word_positive_offset[]; -extern u32 bpf_jit_load_half_positive_offset[]; -extern u32 bpf_jit_load_byte_positive_offset[]; -extern u32 bpf_jit_load_byte_msh_positive_offset[]; -extern u32 bpf_jit_load_word_negative_offset[]; -extern u32 bpf_jit_load_half_negative_offset[]; -extern u32 bpf_jit_load_byte_negative_offset[]; -extern u32 bpf_jit_load_byte_msh_negative_offset[]; - -#else -#define r_RESULT %o0 -#define r_SKB %o0 -#define r_OFF %o1 -#define r_HEADLEN %l4 -#define r_SKB_DATA %l5 -#define r_TMP %g1 -#define r_TMP2 %g3 #endif #endif /* _BPF_JIT_H */ diff --git a/arch/sparc/net/bpf_jit_asm_64.S b/arch/sparc/net/bpf_jit_asm_64.S deleted file mode 100644 index 7177867..0000000 --- a/arch/sparc/net/bpf_jit_asm_64.S +++ /dev/null @@ -1,162 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#include <asm/ptrace.h> - -#include "bpf_jit_64.h" - -#define SAVE_SZ 176 -#define SCRATCH_OFF STACK_BIAS + 128 -#define BE_PTR(label) be,pn %xcc, label -#define SIGN_EXTEND(reg) sra reg, 0, reg - -#define SKF_MAX_NEG_OFF (-0x200000) /* SKF_LL_OFF from filter.h */ - - .text - .globl bpf_jit_load_word -bpf_jit_load_word: - cmp r_OFF, 0 - bl bpf_slow_path_word_neg - nop - .globl bpf_jit_load_word_positive_offset -bpf_jit_load_word_positive_offset: - sub r_HEADLEN, r_OFF, r_TMP - cmp r_TMP, 3 - ble bpf_slow_path_word - add r_SKB_DATA, r_OFF, r_TMP - andcc r_TMP, 3, %g0 - bne load_word_unaligned - nop - retl - ld [r_TMP], r_RESULT -load_word_unaligned: - ldub [r_TMP + 0x0], r_OFF - ldub [r_TMP + 0x1], r_TMP2 - sll r_OFF, 8, r_OFF - or r_OFF, r_TMP2, r_OFF - ldub [r_TMP + 0x2], r_TMP2 - sll r_OFF, 8, r_OFF - or r_OFF, r_TMP2, r_OFF - ldub [r_TMP + 0x3], r_TMP2 - sll r_OFF, 8, r_OFF - retl - or r_OFF, r_TMP2, r_RESULT - - .globl bpf_jit_load_half -bpf_jit_load_half: - cmp r_OFF, 0 - bl bpf_slow_path_half_neg - nop - .globl bpf_jit_load_half_positive_offset -bpf_jit_load_half_positive_offset: - sub r_HEADLEN, r_OFF, r_TMP - cmp r_TMP, 1 - ble bpf_slow_path_half - add r_SKB_DATA, r_OFF, r_TMP - andcc r_TMP, 1, %g0 - bne load_half_unaligned - nop - retl - lduh [r_TMP], r_RESULT -load_half_unaligned: - ldub [r_TMP + 0x0], r_OFF - ldub [r_TMP + 0x1], r_TMP2 - sll r_OFF, 8, r_OFF - retl - or r_OFF, r_TMP2, r_RESULT - - .globl bpf_jit_load_byte -bpf_jit_load_byte: - cmp r_OFF, 0 - bl bpf_slow_path_byte_neg - nop - .globl bpf_jit_load_byte_positive_offset -bpf_jit_load_byte_positive_offset: - cmp r_OFF, r_HEADLEN - bge bpf_slow_path_byte - nop - retl - ldub [r_SKB_DATA + r_OFF], r_RESULT - -#define bpf_slow_path_common(LEN) \ - save %sp, -SAVE_SZ, %sp; \ - mov %i0, %o0; \ - mov %i1, %o1; \ - add %fp, SCRATCH_OFF, %o2; \ - call skb_copy_bits; \ - mov (LEN), %o3; \ - cmp %o0, 0; \ - restore; - -bpf_slow_path_word: - bpf_slow_path_common(4) - bl bpf_error - ld [%sp + SCRATCH_OFF], r_RESULT - retl - nop -bpf_slow_path_half: - bpf_slow_path_common(2) - bl bpf_error - lduh [%sp + SCRATCH_OFF], r_RESULT - retl - nop -bpf_slow_path_byte: - bpf_slow_path_common(1) - bl bpf_error - ldub [%sp + SCRATCH_OFF], r_RESULT - retl - nop - -#define bpf_negative_common(LEN) \ - save %sp, -SAVE_SZ, %sp; \ - mov %i0, %o0; \ - mov %i1, %o1; \ - SIGN_EXTEND(%o1); \ - call bpf_internal_load_pointer_neg_helper; \ - mov (LEN), %o2; \ - mov %o0, r_TMP; \ - cmp %o0, 0; \ - BE_PTR(bpf_error); \ - restore; - -bpf_slow_path_word_neg: - sethi %hi(SKF_MAX_NEG_OFF), r_TMP - cmp r_OFF, r_TMP - bl bpf_error - nop - .globl bpf_jit_load_word_negative_offset -bpf_jit_load_word_negative_offset: - bpf_negative_common(4) - andcc r_TMP, 3, %g0 - bne load_word_unaligned - nop - retl - ld [r_TMP], r_RESULT - -bpf_slow_path_half_neg: - sethi %hi(SKF_MAX_NEG_OFF), r_TMP - cmp r_OFF, r_TMP - bl bpf_error - nop - .globl bpf_jit_load_half_negative_offset -bpf_jit_load_half_negative_offset: - bpf_negative_common(2) - andcc r_TMP, 1, %g0 - bne load_half_unaligned - nop - retl - lduh [r_TMP], r_RESULT - -bpf_slow_path_byte_neg: - sethi %hi(SKF_MAX_NEG_OFF), r_TMP - cmp r_OFF, r_TMP - bl bpf_error - nop - .globl bpf_jit_load_byte_negative_offset -bpf_jit_load_byte_negative_offset: - bpf_negative_common(1) - retl - ldub [r_TMP], r_RESULT - -bpf_error: - /* Make the JIT program itself return zero. */ - ret - restore %g0, %g0, %o0 diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c index 48a2586..222785a 100644 --- a/arch/sparc/net/bpf_jit_comp_64.c +++ b/arch/sparc/net/bpf_jit_comp_64.c @@ -48,10 +48,6 @@ static void bpf_flush_icache(void *start_, void *end_) } } -#define SEEN_DATAREF 1 /* might call external helpers */ -#define SEEN_XREG 2 /* ebx is used */ -#define SEEN_MEM 4 /* use mem[] for temporary storage */ - #define S13(X) ((X) & 0x1fff) #define S5(X) ((X) & 0x1f) #define IMMED 0x00002000 @@ -198,7 +194,6 @@ struct jit_ctx { bool tmp_1_used; bool tmp_2_used; bool tmp_3_used; - bool saw_ld_abs_ind; bool saw_frame_pointer; bool saw_call; bool saw_tail_call; @@ -207,9 +202,7 @@ struct jit_ctx { #define TMP_REG_1 (MAX_BPF_JIT_REG + 0) #define TMP_REG_2 (MAX_BPF_JIT_REG + 1) -#define SKB_HLEN_REG (MAX_BPF_JIT_REG + 2) -#define SKB_DATA_REG (MAX_BPF_JIT_REG + 3) -#define TMP_REG_3 (MAX_BPF_JIT_REG + 4) +#define TMP_REG_3 (MAX_BPF_JIT_REG + 2) /* Map BPF registers to SPARC registers */ static const int bpf2sparc[] = { @@ -238,9 +231,6 @@ static const int bpf2sparc[] = { [TMP_REG_1] = G1, [TMP_REG_2] = G2, [TMP_REG_3] = G3, - - [SKB_HLEN_REG] = L4, - [SKB_DATA_REG] = L5, }; static void emit(const u32 insn, struct jit_ctx *ctx) @@ -800,25 +790,6 @@ static int emit_compare_and_branch(const u8 code, const u8 dst, u8 src, return 0; } -static void load_skb_regs(struct jit_ctx *ctx, u8 r_skb) -{ - const u8 r_headlen = bpf2sparc[SKB_HLEN_REG]; - const u8 r_data = bpf2sparc[SKB_DATA_REG]; - const u8 r_tmp = bpf2sparc[TMP_REG_1]; - unsigned int off; - - off = offsetof(struct sk_buff, len); - emit(LD32I | RS1(r_skb) | S13(off) | RD(r_headlen), ctx); - - off = offsetof(struct sk_buff, data_len); - emit(LD32I | RS1(r_skb) | S13(off) | RD(r_tmp), ctx); - - emit(SUB | RS1(r_headlen) | RS2(r_tmp) | RD(r_headlen), ctx); - - off = offsetof(struct sk_buff, data); - emit(LDPTRI | RS1(r_skb) | S13(off) | RD(r_data), ctx); -} - /* Just skip the save instruction and the ctx register move. */ #define BPF_TAILCALL_PROLOGUE_SKIP 16 #define BPF_TAILCALL_CNT_SP_OFF (STACK_BIAS + 128) @@ -857,9 +828,6 @@ static void build_prologue(struct jit_ctx *ctx) emit_reg_move(I0, O0, ctx); /* If you add anything here, adjust BPF_TAILCALL_PROLOGUE_SKIP above. */ - - if (ctx->saw_ld_abs_ind) - load_skb_regs(ctx, bpf2sparc[BPF_REG_1]); } static void build_epilogue(struct jit_ctx *ctx) @@ -926,7 +894,6 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) const int i = insn - ctx->prog->insnsi; const s16 off = insn->off; const s32 imm = insn->imm; - u32 *func; if (insn->src_reg == BPF_REG_FP) ctx->saw_frame_pointer = true; @@ -1225,16 +1192,11 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) u8 *func = ((u8 *)__bpf_call_base) + imm; ctx->saw_call = true; - if (ctx->saw_ld_abs_ind && bpf_helper_changes_pkt_data(func)) - emit_reg_move(bpf2sparc[BPF_REG_1], L7, ctx); emit_call((u32 *)func, ctx); emit_nop(ctx); emit_reg_move(O0, bpf2sparc[BPF_REG_0], ctx); - - if (ctx->saw_ld_abs_ind && bpf_helper_changes_pkt_data(func)) - load_skb_regs(ctx, L7); break; } @@ -1412,43 +1374,6 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) emit_nop(ctx); break; } -#define CHOOSE_LOAD_FUNC(K, func) \ - ((int)K < 0 ? ((int)K >= SKF_LL_OFF ? func##_negative_offset : func) : func##_positive_offset) - - /* R0 = ntohx(*(size *)(((struct sk_buff *)R6)->data + imm)) */ - case BPF_LD | BPF_ABS | BPF_W: - func = CHOOSE_LOAD_FUNC(imm, bpf_jit_load_word); - goto common_load; - case BPF_LD | BPF_ABS | BPF_H: - func = CHOOSE_LOAD_FUNC(imm, bpf_jit_load_half); - goto common_load; - case BPF_LD | BPF_ABS | BPF_B: - func = CHOOSE_LOAD_FUNC(imm, bpf_jit_load_byte); - goto common_load; - /* R0 = ntohx(*(size *)(((struct sk_buff *)R6)->data + src + imm)) */ - case BPF_LD | BPF_IND | BPF_W: - func = bpf_jit_load_word; - goto common_load; - case BPF_LD | BPF_IND | BPF_H: - func = bpf_jit_load_half; - goto common_load; - - case BPF_LD | BPF_IND | BPF_B: - func = bpf_jit_load_byte; - common_load: - ctx->saw_ld_abs_ind = true; - - emit_reg_move(bpf2sparc[BPF_REG_6], O0, ctx); - emit_loadimm(imm, O1, ctx); - - if (BPF_MODE(code) == BPF_IND) - emit_alu(ADD, src, O1, ctx); - - emit_call(func, ctx); - emit_alu_K(SRA, O1, 0, ctx); - - emit_reg_move(O0, bpf2sparc[BPF_REG_0], ctx); - break; default: pr_err_once("unknown opcode %02x\n", code); @@ -1583,12 +1508,11 @@ skip_init_ctx: build_epilogue(&ctx); if (bpf_jit_enable > 1) - pr_info("Pass %d: shrink = %d, seen = [%c%c%c%c%c%c%c]\n", pass, + pr_info("Pass %d: shrink = %d, seen = [%c%c%c%c%c%c]\n", pass, image_size - (ctx.idx * 4), ctx.tmp_1_used ? '1' : ' ', ctx.tmp_2_used ? '2' : ' ', ctx.tmp_3_used ? '3' : ' ', - ctx.saw_ld_abs_ind ? 'L' : ' ', ctx.saw_frame_pointer ? 'F' : ' ', ctx.saw_call ? 'C' : ' ', ctx.saw_tail_call ? 'T' : ' '); |
