diff options
Diffstat (limited to 'arch/parisc')
30 files changed, 301 insertions, 772 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 874a283edb95..e77a06e9621e 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -19,9 +19,6 @@ config MMU config STACK_GROWSUP def_bool y -config UID16 - bool - config RWSEM_GENERIC_SPINLOCK def_bool y diff --git a/arch/parisc/configs/a500_defconfig b/arch/parisc/configs/a500_defconfig index 955ef5084f3e..959ad3c4e372 100644 --- a/arch/parisc/configs/a500_defconfig +++ b/arch/parisc/configs/a500_defconfig @@ -602,6 +602,7 @@ CONFIG_ACENIC_OMIT_TIGON_I=y # CONFIG_DL2K is not set CONFIG_E1000=m CONFIG_E1000_NAPI=y +# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set # CONFIG_NS83820 is not set # CONFIG_HAMACHI is not set # CONFIG_YELLOWFIN is not set diff --git a/arch/parisc/configs/c3000_defconfig b/arch/parisc/configs/c3000_defconfig index 9d86b6b1ebd1..0b1c8c1fa8a3 100644 --- a/arch/parisc/configs/c3000_defconfig +++ b/arch/parisc/configs/c3000_defconfig @@ -626,6 +626,7 @@ CONFIG_ACENIC=m # CONFIG_DL2K is not set CONFIG_E1000=m # CONFIG_E1000_NAPI is not set +# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set # CONFIG_NS83820 is not set # CONFIG_HAMACHI is not set # CONFIG_YELLOWFIN is not set diff --git a/arch/parisc/hpux/sys_hpux.c b/arch/parisc/hpux/sys_hpux.c index a64fd48fbfb5..29b4d61898f2 100644 --- a/arch/parisc/hpux/sys_hpux.c +++ b/arch/parisc/hpux/sys_hpux.c @@ -22,6 +22,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <linux/capability.h> #include <linux/file.h> #include <linux/fs.h> #include <linux/namei.h> diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile index 171f9c239f60..27827bc3717e 100644 --- a/arch/parisc/kernel/Makefile +++ b/arch/parisc/kernel/Makefile @@ -6,7 +6,6 @@ extra-y := init_task.o head.o vmlinux.lds AFLAGS_entry.o := -traditional AFLAGS_pacache.o := -traditional -CFLAGS_ioctl32.o := -Ifs/ obj-y := cache.o pacache.o setup.o traps.o time.o irq.o \ pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \ @@ -19,6 +18,6 @@ obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_PA11) += pci-dma.o obj-$(CONFIG_PCI) += pci.o obj-$(CONFIG_MODULES) += module.o -obj-$(CONFIG_64BIT) += binfmt_elf32.o sys_parisc32.o ioctl32.o signal32.o +obj-$(CONFIG_64BIT) += binfmt_elf32.o sys_parisc32.o signal32.o # only supported for PCX-W/U in 64-bit mode at the moment obj-$(CONFIG_64BIT) += perf.o perf_asm.o diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index a065349aee37..d8a4ca021aac 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -29,9 +29,9 @@ #include <asm/processor.h> #include <asm/sections.h> -int split_tlb; -int dcache_stride; -int icache_stride; +int split_tlb __read_mostly; +int dcache_stride __read_mostly; +int icache_stride __read_mostly; EXPORT_SYMBOL(dcache_stride); @@ -45,29 +45,29 @@ DEFINE_SPINLOCK(pa_tlb_lock); EXPORT_SYMBOL(pa_tlb_lock); #endif -struct pdc_cache_info cache_info; +struct pdc_cache_info cache_info __read_mostly; #ifndef CONFIG_PA20 -static struct pdc_btlb_info btlb_info; +static struct pdc_btlb_info btlb_info __read_mostly; #endif #ifdef CONFIG_SMP void flush_data_cache(void) { - on_each_cpu((void (*)(void *))flush_data_cache_local, NULL, 1, 1); + on_each_cpu(flush_data_cache_local, NULL, 1, 1); } void flush_instruction_cache(void) { - on_each_cpu((void (*)(void *))flush_instruction_cache_local, NULL, 1, 1); + on_each_cpu(flush_instruction_cache_local, NULL, 1, 1); } #endif void flush_cache_all_local(void) { - flush_instruction_cache_local(); - flush_data_cache_local(); + flush_instruction_cache_local(NULL); + flush_data_cache_local(NULL); } EXPORT_SYMBOL(flush_cache_all_local); @@ -332,7 +332,7 @@ void clear_user_page_asm(void *page, unsigned long vaddr) } #define FLUSH_THRESHOLD 0x80000 /* 0.5MB */ -int parisc_cache_flush_threshold = FLUSH_THRESHOLD; +int parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD; void parisc_setup_cache_timing(void) { diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c index 988844a169e6..2d804e2d16d1 100644 --- a/arch/parisc/kernel/drivers.c +++ b/arch/parisc/kernel/drivers.c @@ -39,7 +39,7 @@ #include <asm/parisc-device.h> /* See comments in include/asm-parisc/pci.h */ -struct hppa_dma_ops *hppa_dma_ops; +struct hppa_dma_ops *hppa_dma_ops __read_mostly; EXPORT_SYMBOL(hppa_dma_ops); static struct device root = { @@ -173,8 +173,6 @@ int register_parisc_driver(struct parisc_driver *driver) WARN_ON(driver->drv.probe != NULL); WARN_ON(driver->drv.remove != NULL); - driver->drv.probe = parisc_driver_probe; - driver->drv.remove = parisc_driver_remove; driver->drv.name = driver->name; return driver_register(&driver->drv); @@ -499,8 +497,12 @@ alloc_pa_dev(unsigned long hpa, struct hardware_path *mod_path) dev = create_parisc_device(mod_path); if (dev->id.hw_type != HPHW_FAULTY) { - printk("Two devices have hardware path %s. Please file a bug with HP.\n" - "In the meantime, you could try rearranging your cards.\n", parisc_pathname(dev)); + printk(KERN_ERR "Two devices have hardware path [%s]. " + "IODC data for second device: " + "%02x%02x%02x%02x%02x%02x\n" + "Rearranging GSC cards sometimes helps\n", + parisc_pathname(dev), iodc_data[0], iodc_data[1], + iodc_data[3], iodc_data[4], iodc_data[5], iodc_data[6]); return NULL; } @@ -511,8 +513,13 @@ alloc_pa_dev(unsigned long hpa, struct hardware_path *mod_path) (iodc_data[5] << 8) | iodc_data[6]; dev->hpa.name = parisc_pathname(dev); dev->hpa.start = hpa; - if (hpa == 0xf4000000 || hpa == 0xf6000000 || - hpa == 0xf8000000 || hpa == 0xfa000000) { + /* This is awkward. The STI spec says that gfx devices may occupy + * 32MB or 64MB. Unfortunately, we don't know how to tell whether + * it's the former or the latter. Assumptions either way can hurt us. + */ + if (hpa == 0xf4000000 || hpa == 0xf8000000) { + dev->hpa.end = hpa + 0x03ffffff; + } else if (hpa == 0xf6000000 || hpa == 0xfa000000) { dev->hpa.end = hpa + 0x01ffffff; } else { dev->hpa.end = hpa + 0xfff; @@ -566,6 +573,8 @@ struct bus_type parisc_bus_type = { .name = "parisc", .match = parisc_generic_match, .dev_attrs = parisc_device_attrs, + .probe = parisc_driver_probe, + .remove = parisc_driver_remove, }; /** @@ -830,7 +839,7 @@ static void print_parisc_device(struct parisc_device *dev) if (dev->num_addrs) { int k; - printk(", additional addresses: "); + printk(", additional addresses: "); for (k = 0; k < dev->num_addrs; k++) printk("0x%lx ", dev->addr[k]); } diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index c7e66ee5b083..9af4b22a6d77 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -1846,6 +1846,7 @@ sys_clone_wrapper: ldo -16(%r30),%r29 /* Reference param save area */ #endif + /* WARNING - Clobbers r19 and r21, userspace must save these! */ STREG %r2,PT_GR19(%r1) /* save for child */ STREG %r30,PT_GR21(%r1) BL sys_clone,%r2 diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c index 553f8fe03224..2dc06b8e1817 100644 --- a/arch/parisc/kernel/firmware.c +++ b/arch/parisc/kernel/firmware.c @@ -80,7 +80,7 @@ static unsigned long pdc_result2[32] __attribute__ ((aligned (8))); /* Firmware needs to be initially set to narrow to determine the * actual firmware width. */ -int parisc_narrow_firmware = 1; +int parisc_narrow_firmware __read_mostly = 1; #endif /* On most currently-supported platforms, IODC I/O calls are 32-bit calls diff --git a/arch/parisc/kernel/hardware.c b/arch/parisc/kernel/hardware.c index 2071b5bba15c..3058bffd8a2c 100644 --- a/arch/parisc/kernel/hardware.c +++ b/arch/parisc/kernel/hardware.c @@ -551,6 +551,7 @@ static struct hp_hardware hp_hardware_list[] __initdata = { {HPHW_BCPORT, 0x804, 0x0000C, 0x10, "REO I/O BC Merced Port"}, {HPHW_BCPORT, 0x782, 0x0000C, 0x00, "REO I/O BC Ropes Port"}, {HPHW_BCPORT, 0x784, 0x0000C, 0x00, "Pluto I/O BC Ropes Port"}, + {HPHW_BRIDGE, 0x05D, 0x0000A, 0x00, "SummitHawk Dino PCI Bridge"}, {HPHW_BRIDGE, 0x680, 0x0000A, 0x00, "Dino PCI Bridge"}, {HPHW_BRIDGE, 0x682, 0x0000A, 0x00, "Cujo PCI Bridge"}, {HPHW_BRIDGE, 0x782, 0x0000A, 0x00, "Elroy PCI Bridge"}, diff --git a/arch/parisc/kernel/inventory.c b/arch/parisc/kernel/inventory.c index 1a1c66422736..4e847ba53180 100644 --- a/arch/parisc/kernel/inventory.c +++ b/arch/parisc/kernel/inventory.c @@ -38,7 +38,7 @@ */ #undef DEBUG_PAT -int pdc_type = PDC_TYPE_ILLEGAL; +int pdc_type __read_mostly = PDC_TYPE_ILLEGAL; void __init setup_pdc(void) { @@ -120,8 +120,8 @@ set_pmem_entry(physmem_range_t *pmem_ptr, unsigned long start, * pdc info is bad in this case). */ - if ( ((start & (PAGE_SIZE - 1)) != 0) - || ((pages4k & ((1UL << PDC_PAGE_ADJ_SHIFT) - 1)) != 0) ) { + if (unlikely( ((start & (PAGE_SIZE - 1)) != 0) + || ((pages4k & ((1UL << PDC_PAGE_ADJ_SHIFT) - 1)) != 0) )) { panic("Memory range doesn't align with page size!\n"); } @@ -188,7 +188,7 @@ pat_query_module(ulong pcell_loc, ulong mod_index) temp = pa_pdc_cell.cba; dev = alloc_pa_dev(PAT_GET_CBA(temp), &pa_pdc_cell.mod_path); if (!dev) { - return PDC_NE_MOD; + return PDC_OK; } /* alloc_pa_dev sets dev->hpa */ diff --git a/arch/parisc/kernel/ioctl32.c b/arch/parisc/kernel/ioctl32.c deleted file mode 100644 index 0a331104ad56..000000000000 --- a/arch/parisc/kernel/ioctl32.c +++ /dev/null @@ -1,606 +0,0 @@ -/* $Id: ioctl32.c,v 1.5 2002/10/18 00:21:43 varenet Exp $ - * ioctl32.c: Conversion between 32bit and 64bit native ioctls. - * - * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com) - * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) - * - * These routines maintain argument size conversion between 32bit and 64bit - * ioctls. - */ - -#include <linux/syscalls.h> - -#define INCLUDES -#include "compat_ioctl.c" - -#include <asm/perf.h> -#include <asm/ioctls.h> - -#define CODE -#include "compat_ioctl.c" - -/* Use this to get at 32-bit user passed pointers. - See sys_sparc32.c for description about these. */ -#define A(__x) ((unsigned long)(__x)) -/* The same for use with copy_from_user() and copy_to_user(). */ -#define B(__x) ((void *)(unsigned long)(__x)) - -#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE) -/* This really belongs in include/linux/drm.h -DaveM */ -#include "../../../drivers/char/drm/drm.h" - -typedef struct drm32_version { - int version_major; /* Major version */ - int version_minor; /* Minor version */ - int version_patchlevel;/* Patch level */ - int name_len; /* Length of name buffer */ - u32 name; /* Name of driver */ - int date_len; /* Length of date buffer */ - u32 date; /* User-space buffer to hold date */ - int desc_len; /* Length of desc buffer */ - u32 desc; /* User-space buffer to hold desc */ -} drm32_version_t; -#define DRM32_IOCTL_VERSION DRM_IOWR(0x00, drm32_version_t) - -static int drm32_version(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_version_t *uversion = (drm32_version_t *)arg; - char *name_ptr, *date_ptr, *desc_ptr; - u32 tmp1, tmp2, tmp3; - drm_version_t kversion; - mm_segment_t old_fs; - int ret; - - memset(&kversion, 0, sizeof(kversion)); - if (get_user(kversion.name_len, &uversion->name_len) || - get_user(kversion.date_len, &uversion->date_len) || - get_user(kversion.desc_len, &uversion->desc_len) || - get_user(tmp1, &uversion->name) || - get_user(tmp2, &uversion->date) || - get_user(tmp3, &uversion->desc)) - return -EFAULT; - - name_ptr = (char *) A(tmp1); - date_ptr = (char *) A(tmp2); - desc_ptr = (char *) A(tmp3); - - ret = -ENOMEM; - if (kversion.name_len && name_ptr) { - kversion.name = kmalloc(kversion.name_len, GFP_KERNEL); - if (!kversion.name) - goto out; - } - if (kversion.date_len && date_ptr) { - kversion.date = kmalloc(kversion.date_len, GFP_KERNEL); - if (!kversion.date) - goto out; - } - if (kversion.desc_len && desc_ptr) { - kversion.desc = kmalloc(kversion.desc_len, GFP_KERNEL); - if (!kversion.desc) - goto out; - } - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl (fd, DRM_IOCTL_VERSION, (unsigned long)&kversion); - set_fs(old_fs); - - if (!ret) { - if ((kversion.name && - copy_to_user(name_ptr, kversion.name, kversion.name_len)) || - (kversion.date && - copy_to_user(date_ptr, kversion.date, kversion.date_len)) || - (kversion.desc && - copy_to_user(desc_ptr, kversion.desc, kversion.desc_len))) - ret = -EFAULT; - if (put_user(kversion.version_major, &uversion->version_major) || - put_user(kversion.version_minor, &uversion->version_minor) || - put_user(kversion.version_patchlevel, &uversion->version_patchlevel) || - put_user(kversion.name_len, &uversion->name_len) || - put_user(kversion.date_len, &uversion->date_len) || - put_user(kversion.desc_len, &uversion->desc_len)) - ret = -EFAULT; - } - -out: - kfree(kversion.name); - kfree(kversion.date); - kfree(kversion.desc); - return ret; -} - -typedef struct drm32_unique { - int unique_len; /* Length of unique */ - u32 unique; /* Unique name for driver instantiation */ -} drm32_unique_t; -#define DRM32_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm32_unique_t) -#define DRM32_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm32_unique_t) - -static int drm32_getsetunique(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_unique_t *uarg = (drm32_unique_t *)arg; - drm_unique_t karg; - mm_segment_t old_fs; - char *uptr; - u32 tmp; - int ret; - - if (get_user(karg.unique_len, &uarg->unique_len)) - return -EFAULT; - karg.unique = NULL; - - if (get_user(tmp, &uarg->unique)) - return -EFAULT; - - uptr = (char *) A(tmp); - - if (uptr) { - karg.unique = kmalloc(karg.unique_len, GFP_KERNEL); - if (!karg.unique) - return -ENOMEM; - if (cmd == DRM32_IOCTL_SET_UNIQUE && - copy_from_user(karg.unique, uptr, karg.unique_len)) { - kfree(karg.unique); - return -EFAULT; - } - } - - old_fs = get_fs(); - set_fs(KERNEL_DS); - if (cmd == DRM32_IOCTL_GET_UNIQUE) - ret = sys_ioctl (fd, DRM_IOCTL_GET_UNIQUE, (unsigned long)&karg); - else - ret = sys_ioctl (fd, DRM_IOCTL_SET_UNIQUE, (unsigned long)&karg); - set_fs(old_fs); - - if (!ret) { - if (cmd == DRM32_IOCTL_GET_UNIQUE && - uptr != NULL && - copy_to_user(uptr, karg.unique, karg.unique_len)) - ret = -EFAULT; - if (put_user(karg.unique_len, &uarg->unique_len)) - ret = -EFAULT; - } - - kfree(karg.unique); - return ret; -} - -typedef struct drm32_map { - u32 offset; /* Requested physical address (0 for SAREA)*/ - u32 size; /* Requested physical size (bytes) */ - drm_map_type_t type; /* Type of memory to map */ - drm_map_flags_t flags; /* Flags */ - u32 handle; /* User-space: "Handle" to pass to mmap */ - /* Kernel-space: kernel-virtual address */ - int mtrr; /* MTRR slot used */ - /* Private data */ -} drm32_map_t; -#define DRM32_IOCTL_ADD_MAP DRM_IOWR(0x15, drm32_map_t) - -static int drm32_addmap(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_map_t *uarg = (drm32_map_t *) arg; - drm_map_t karg; - mm_segment_t old_fs; - u32 tmp; - int ret; - - ret = get_user(karg.offset, &uarg->offset); - ret |= get_user(karg.size, &uarg->size); - ret |= get_user(karg.type, &uarg->type); - ret |= get_user(karg.flags, &uarg->flags); - ret |= get_user(tmp, &uarg->handle); - ret |= get_user(karg.mtrr, &uarg->mtrr); - if (ret) - return -EFAULT; - - karg.handle = (void *) A(tmp); - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl(fd, DRM_IOCTL_ADD_MAP, (unsigned long) &karg); - set_fs(old_fs); - - if (!ret) { - ret = put_user(karg.offset, &uarg->offset); - ret |= put_user(karg.size, &uarg->size); - ret |= put_user(karg.type, &uarg->type); - ret |= put_user(karg.flags, &uarg->flags); - tmp = (u32) (long)karg.handle; - ret |= put_user(tmp, &uarg->handle); - ret |= put_user(karg.mtrr, &uarg->mtrr); - if (ret) - ret = -EFAULT; - } - - return ret; -} - -typedef struct drm32_buf_info { - int count; /* Entries in list */ - u32 list; /* (drm_buf_desc_t *) */ -} drm32_buf_info_t; -#define DRM32_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm32_buf_info_t) - -static int drm32_info_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_buf_info_t *uarg = (drm32_buf_info_t *)arg; - drm_buf_desc_t *ulist; - drm_buf_info_t karg; - mm_segment_t old_fs; - int orig_count, ret; - u32 tmp; - - if (get_user(karg.count, &uarg->count) || - get_user(tmp, &uarg->list)) - return -EFAULT; - - ulist = (drm_buf_desc_t *) A(tmp); - - orig_count = karg.count; - - karg.list = kmalloc(karg.count * sizeof(drm_buf_desc_t), GFP_KERNEL); - if (!karg.list) - return -EFAULT; - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl(fd, DRM_IOCTL_INFO_BUFS, (unsigned long) &karg); - set_fs(old_fs); - - if (!ret) { - if (karg.count <= orig_count && - (copy_to_user(ulist, karg.list, - karg.count * sizeof(drm_buf_desc_t)))) - ret = -EFAULT; - if (put_user(karg.count, &uarg->count)) - ret = -EFAULT; - } - - kfree(karg.list); - return ret; -} - -typedef struct drm32_buf_free { - int count; - u32 list; /* (int *) */ -} drm32_buf_free_t; -#define DRM32_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm32_buf_free_t) - -static int drm32_free_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_buf_free_t *uarg = (drm32_buf_free_t *)arg; - drm_buf_free_t karg; - mm_segment_t old_fs; - int *ulist; - int ret; - u32 tmp; - - if (get_user(karg.count, &uarg->count) || - get_user(tmp, &uarg->list)) - return -EFAULT; - - ulist = (int *) A(tmp); - - karg.list = kmalloc(karg.count * sizeof(int), GFP_KERNEL); - if (!karg.list) - return -ENOMEM; - - ret = -EFAULT; - if (copy_from_user(karg.list, ulist, (karg.count * sizeof(int)))) - goto out; - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl(fd, DRM_IOCTL_FREE_BUFS, (unsigned long) &karg); - set_fs(old_fs); - -out: - kfree(karg.list); - return ret; -} - -typedef struct drm32_buf_pub { - int idx; /* Index into master buflist */ - int total; /* Buffer size */ - int used; /* Amount of buffer in use (for DMA) */ - u32 address; /* Address of buffer (void *) */ -} drm32_buf_pub_t; - -typedef struct drm32_buf_map { - int count; /* Length of buflist */ - u32 virtual; /* Mmaped area in user-virtual (void *) */ - u32 list; /* Buffer information (drm_buf_pub_t *) */ -} drm32_buf_map_t; -#define DRM32_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm32_buf_map_t) - -static int drm32_map_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_buf_map_t *uarg = (drm32_buf_map_t *)arg; - drm32_buf_pub_t *ulist; - drm_buf_map_t karg; - mm_segment_t old_fs; - int orig_count, ret, i; - u32 tmp1, tmp2; - - if (get_user(karg.count, &uarg->count) || - get_user(tmp1, &uarg->virtual) || - get_user(tmp2, &uarg->list)) - return -EFAULT; - - karg.virtual = (void *) A(tmp1); - ulist = (drm32_buf_pub_t *) A(tmp2); - - orig_count = karg.count; - - karg.list = kmalloc(karg.count * sizeof(drm_buf_pub_t), GFP_KERNEL); - if (!karg.list) - return -ENOMEM; - - ret = -EFAULT; - for (i = 0; i < karg.count; i++) { - if (get_user(karg.list[i].idx, &ulist[i].idx) || - get_user(karg.list[i].total, &ulist[i].total) || - get_user(karg.list[i].used, &ulist[i].used) || - get_user(tmp1, &ulist[i].address)) - goto out; - - karg.list[i].address = (void *) A(tmp1); - } - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl(fd, DRM_IOCTL_MAP_BUFS, (unsigned long) &karg); - set_fs(old_fs); - - if (!ret) { - for (i = 0; i < orig_count; i++) { - tmp1 = (u32) (long) karg.list[i].address; - if (put_user(karg.list[i].idx, &ulist[i].idx) || - put_user(karg.list[i].total, &ulist[i].total) || - put_user(karg.list[i].used, &ulist[i].used) || - put_user(tmp1, &ulist[i].address)) { - ret = -EFAULT; - goto out; - } - } - if (put_user(karg.count, &uarg->count)) - ret = -EFAULT; - } - -out: - kfree(karg.list); - return ret; -} - -typedef struct drm32_dma { - /* Indices here refer to the offset into - buflist in drm_buf_get_t. */ - int context; /* Context handle */ - int send_count; /* Number of buffers to send */ - u32 send_indices; /* List of handles to buffers (int *) */ - u32 send_sizes; /* Lengths of data to send (int *) */ - drm_dma_flags_t flags; /* Flags */ - int request_count; /* Number of buffers requested */ - int request_size; /* Desired size for buffers */ - u32 request_indices; /* Buffer information (int *) */ - u32 request_sizes; /* (int *) */ - int granted_count; /* Number of buffers granted */ -} drm32_dma_t; -#define DRM32_IOCTL_DMA DRM_IOWR(0x29, drm32_dma_t) - -/* RED PEN The DRM layer blindly dereferences the send/request - * indice/size arrays even though they are userland - * pointers. -DaveM - */ -static int drm32_dma(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_dma_t *uarg = (drm32_dma_t *) arg; - int *u_si, *u_ss, *u_ri, *u_rs; - drm_dma_t karg; - mm_segment_t old_fs; - int ret; - u32 tmp1, tmp2, tmp3, tmp4; - - karg.send_indices = karg.send_sizes = NULL; - karg.request_indices = karg.request_sizes = NULL; - - if (get_user(karg.context, &uarg->context) || - get_user(karg.send_count, &uarg->send_count) || - get_user(tmp1, &uarg->send_indices) || - get_user(tmp2, &uarg->send_sizes) || - get_user(karg.flags, &uarg->flags) || - get_user(karg.request_count, &uarg->request_count) || - get_user(karg.request_size, &uarg->request_size) || - get_user(tmp3, &uarg->request_indices) || - get_user(tmp4, &uarg->request_sizes) || - get_user(karg.granted_count, &uarg->granted_count)) - return -EFAULT; - - u_si = (int *) A(tmp1); - u_ss = (int *) A(tmp2); - u_ri = (int *) A(tmp3); - u_rs = (int *) A(tmp4); - - if (karg.send_count) { - karg.send_indices = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL); - karg.send_sizes = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL); - - ret = -ENOMEM; - if (!karg.send_indices || !karg.send_sizes) - goto out; - - ret = -EFAULT; - if (copy_from_user(karg.send_indices, u_si, - (karg.send_count * sizeof(int))) || - copy_from_user(karg.send_sizes, u_ss, - (karg.send_count * sizeof(int)))) - goto out; - } - - if (karg.request_count) { - karg.request_indices = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL); - karg.request_sizes = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL); - - ret = -ENOMEM; - if (!karg.request_indices || !karg.request_sizes) - goto out; - - ret = -EFAULT; - if (copy_from_user(karg.request_indices, u_ri, - (karg.request_count * sizeof(int))) || - copy_from_user(karg.request_sizes, u_rs, - (karg.request_count * sizeof(int)))) - goto out; - } - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl(fd, DRM_IOCTL_DMA, (unsigned long) &karg); - set_fs(old_fs); - - if (!ret) { - if (put_user(karg.context, &uarg->context) || - put_user(karg.send_count, &uarg->send_count) || - put_user(karg.flags, &uarg->flags) || - put_user(karg.request_count, &uarg->request_count) || - put_user(karg.request_size, &uarg->request_size) || - put_user(karg.granted_count, &uarg->granted_count)) - ret = -EFAULT; - - if (karg.send_count) { - if (copy_to_user(u_si, karg.send_indices, - (karg.send_count * sizeof(int))) || - copy_to_user(u_ss, karg.send_sizes, - (karg.send_count * sizeof(int)))) - ret = -EFAULT; - } - if (karg.request_count) { - if (copy_to_user(u_ri, karg.request_indices, - (karg.request_count * sizeof(int))) || - copy_to_user(u_rs, karg.request_sizes, - (karg.request_count * sizeof(int)))) - ret = -EFAULT; - } - } - -out: - kfree(karg.send_indices); - kfree(karg.send_sizes); - kfree(karg.request_indices); - kfree(karg.request_sizes); - return ret; -} - -typedef struct drm32_ctx_res { - int count; - u32 contexts; /* (drm_ctx_t *) */ -} drm32_ctx_res_t; -#define DRM32_IOCTL_RES_CTX DRM_IOWR(0x26, drm32_ctx_res_t) - -static int drm32_res_ctx(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_ctx_res_t *uarg = (drm32_ctx_res_t *) arg; - drm_ctx_t *ulist; - drm_ctx_res_t karg; - mm_segment_t old_fs; - int orig_count, ret; - u32 tmp; - - karg.contexts = NULL; - if (get_user(karg.count, &uarg->count) || - get_user(tmp, &uarg->contexts)) - return -EFAULT; - - ulist = (drm_ctx_t *) A(tmp); - - orig_count = karg.count; - if (karg.count && ulist) { - karg.contexts = kmalloc((karg.count * sizeof(drm_ctx_t)), GFP_KERNEL); - if (!karg.contexts) - return -ENOMEM; - if (copy_from_user(karg.contexts, ulist, - (karg.count * sizeof(drm_ctx_t)))) { - kfree(karg.contexts); - return -EFAULT; - } - } - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl(fd, DRM_IOCTL_RES_CTX, (unsigned long) &karg); - set_fs(old_fs); - - if (!ret) { - if (orig_count) { - if (copy_to_user(ulist, karg.contexts, - (orig_count * sizeof(drm_ctx_t)))) - ret = -EFAULT; - } - if (put_user(karg.count, &uarg->count)) - ret = -EFAULT; - } - - kfree(karg.contexts); - return ret; -} - -#endif - -#define HANDLE_IOCTL(cmd, handler) { cmd, (ioctl_trans_handler_t)handler, NULL }, -#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd, sys_ioctl) - -#define IOCTL_TABLE_START struct ioctl_trans ioctl_start[] = { -#define IOCTL_TABLE_END }; - -IOCTL_TABLE_START -#include <linux/compat_ioctl.h> - -#define DECLARES -#include "compat_ioctl.c" - -/* PA-specific ioctls */ -COMPATIBLE_IOCTL(PA_PERF_ON) -COMPATIBLE_IOCTL(PA_PERF_OFF) -COMPATIBLE_IOCTL(PA_PERF_VERSION) - -/* And these ioctls need translation */ -HANDLE_IOCTL(SIOCGPPPSTATS, dev_ifsioc) -HANDLE_IOCTL(SIOCGPPPCSTATS, dev_ifsioc) -HANDLE_IOCTL(SIOCGPPPVER, dev_ifsioc) - -#if defined(CONFIG_GEN_RTC) -COMPATIBLE_IOCTL(RTC_AIE_ON) -COMPATIBLE_IOCTL(RTC_AIE_OFF) -COMPATIBLE_IOCTL(RTC_UIE_ON) -COMPATIBLE_IOCTL(RTC_UIE_OFF) -COMPATIBLE_IOCTL(RTC_PIE_ON) -COMPATIBLE_IOCTL(RTC_PIE_OFF) -COMPATIBLE_IOCTL(RTC_WIE_ON) -COMPATIBLE_IOCTL(RTC_WIE_OFF) -COMPATIBLE_IOCTL(RTC_ALM_SET) /* struct rtc_time only has ints */ -COMPATIBLE_IOCTL(RTC_ALM_READ) /* struct rtc_time only has ints */ -COMPATIBLE_IOCTL(RTC_RD_TIME) /* struct rtc_time only has ints */ -COMPATIBLE_IOCTL(RTC_SET_TIME) /* struct rtc_time only has ints */ -HANDLE_IOCTL(RTC_IRQP_READ, w_long) -COMPATIBLE_IOCTL(RTC_IRQP_SET) -HANDLE_IOCTL(RTC_EPOCH_READ, w_long) -COMPATIBLE_IOCTL(RTC_EPOCH_SET) -#endif - -#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE) -HANDLE_IOCTL(DRM32_IOCTL_VERSION, drm32_version); -HANDLE_IOCTL(DRM32_IOCTL_GET_UNIQUE, drm32_getsetunique); -HANDLE_IOCTL(DRM32_IOCTL_SET_UNIQUE, drm32_getsetunique); -HANDLE_IOCTL(DRM32_IOCTL_ADD_MAP, drm32_addmap); -HANDLE_IOCTL(DRM32_IOCTL_INFO_BUFS, drm32_info_bufs); -HANDLE_IOCTL(DRM32_IOCTL_FREE_BUFS, drm32_free_bufs); -HANDLE_IOCTL(DRM32_IOCTL_MAP_BUFS, drm32_map_bufs); -HANDLE_IOCTL(DRM32_IOCTL_DMA, drm32_dma); -HANDLE_IOCTL(DRM32_IOCTL_RES_CTX, drm32_res_ctx); -#endif /* DRM */ -IOCTL_TABLE_END - -int ioctl_table_size = ARRAY_SIZE(ioctl_start); diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c index 006385dbee66..197936d9359a 100644 --- a/arch/parisc/kernel/irq.c +++ b/arch/parisc/kernel/irq.c @@ -30,6 +30,9 @@ #include <linux/seq_file.h> #include <linux/spinlock.h> #include <linux/types.h> +#include <asm/io.h> + +#include <asm/smp.h> #undef PARISC_IRQ_CR16_COUNTS @@ -43,26 +46,34 @@ extern irqreturn_t ipi_interrupt(int, void *, struct pt_regs *); */ static volatile unsigned long cpu_eiem = 0; -static void cpu_set_eiem(void *info) -{ - set_eiem((unsigned long) info); -} - -static inline void cpu_disable_irq(unsigned int irq) +static void cpu_disable_irq(unsigned int irq) { unsigned long eirr_bit = EIEM_MASK(irq); cpu_eiem &= ~eirr_bit; - on_each_cpu(cpu_set_eiem, (void *) cpu_eiem, 1, 1); + /* Do nothing on the other CPUs. If they get this interrupt, + * The & cpu_eiem in the do_cpu_irq_mask() ensures they won't + * handle it, and the set_eiem() at the bottom will ensure it + * then gets disabled */ } static void cpu_enable_irq(unsigned int irq) { unsigned long eirr_bit = EIEM_MASK(irq); - mtctl(eirr_bit, 23); /* clear EIRR bit before unmasking */ cpu_eiem |= eirr_bit; - on_each_cpu(cpu_set_eiem, (void *) cpu_eiem, 1, 1); + + /* FIXME: while our interrupts aren't nested, we cannot reset + * the eiem mask if we're already in an interrupt. Once we + * implement nested interrupts, this can go away + */ + if (!in_interrupt()) + set_eiem(cpu_eiem); + + /* This is just a simple NOP IPI. But what it does is cause + * all the other CPUs to do a set_eiem(cpu_eiem) at the end + * of the interrupt handler */ + smp_send_all_nop(); } static unsigned int cpu_startup_irq(unsigned int irq) @@ -74,6 +85,35 @@ static unsigned int cpu_startup_irq(unsigned int irq) void no_ack_irq(unsigned int irq) { } void no_end_irq(unsigned int irq) { } +#ifdef CONFIG_SMP +int cpu_check_affinity(unsigned int irq, cpumask_t *dest) +{ + int cpu_dest; + + /* timer and ipi have to always be received on all CPUs */ + if (irq == TIMER_IRQ || irq == IPI_IRQ) { + /* Bad linux design decision. The mask has already + * been set; we must reset it */ + irq_affinity[irq] = CPU_MASK_ALL; + return -EINVAL; + } + + /* whatever mask they set, we just allow one CPU */ + cpu_dest = first_cpu(*dest); + *dest = cpumask_of_cpu(cpu_dest); + + return 0; +} + +static void cpu_set_affinity_irq(unsigned int irq, cpumask_t dest) +{ + if (cpu_check_affinity(irq, &dest)) + return; + + irq_affinity[irq] = dest; +} +#endif + static struct hw_interrupt_type cpu_interrupt_type = { .typename = "CPU", .startup = cpu_startup_irq, @@ -82,7 +122,9 @@ static struct hw_interrupt_type cpu_interrupt_type = { .disable = cpu_disable_irq, .ack = no_ack_irq, .end = no_end_irq, -// .set_affinity = cpu_set_affinity_irq, +#ifdef CONFIG_SMP + .set_affinity = cpu_set_affinity_irq, +#endif }; int show_interrupts(struct seq_file *p, void *v) @@ -219,6 +261,17 @@ int txn_alloc_irq(unsigned int bits_wide) return -1; } + +unsigned long txn_affinity_addr(unsigned int irq, int cpu) +{ +#ifdef CONFIG_SMP + irq_affinity[irq] = cpumask_of_cpu(cpu); +#endif + + return cpu_data[cpu].txn_addr; +} + + unsigned long txn_alloc_addr(unsigned int virt_irq) { static int next_cpu = -1; @@ -233,7 +286,7 @@ unsigned long txn_alloc_addr(unsigned int virt_irq) if (next_cpu >= NR_CPUS) next_cpu = 0; /* nothing else, assign monarch */ - return cpu_data[next_cpu].txn_addr; + return txn_affinity_addr(virt_irq, next_cpu); } @@ -250,10 +303,11 @@ void do_cpu_irq_mask(struct pt_regs *regs) irq_enter(); /* - * Only allow interrupt processing to be interrupted by the - * timer tick + * Don't allow TIMER or IPI nested interrupts. + * Allowing any single interrupt to nest can lead to that CPU + * handling interrupts with all enabled interrupts unmasked. */ - set_eiem(EIEM_MASK(TIMER_IRQ)); + set_eiem(0UL); /* 1) only process IRQs that are enabled/unmasked (cpu_eiem) * 2) We loop here on EIRR contents in order to avoid @@ -267,23 +321,41 @@ void do_cpu_irq_mask(struct pt_regs *regs) if (!eirr_val) break; - if (eirr_val & EIEM_MASK(TIMER_IRQ)) - set_eiem(0); - mtctl(eirr_val, 23); /* reset bits we are going to process */ /* Work our way from MSb to LSb...same order we alloc EIRs */ for (irq = TIMER_IRQ; eirr_val && bit; bit>>=1, irq++) { +#ifdef CONFIG_SMP + cpumask_t dest = irq_affinity[irq]; +#endif if (!(bit & eirr_val)) continue; /* clear bit in mask - can exit loop sooner */ eirr_val &= ~bit; +#ifdef CONFIG_SMP + /* FIXME: because generic set affinity mucks + * with the affinity before sending it to us + * we can get the situation where the affinity is + * wrong for our CPU type interrupts */ + if (irq != TIMER_IRQ && irq != IPI_IRQ && + !cpu_isset(smp_processor_id(), dest)) { + int cpu = first_cpu(dest); + + printk(KERN_DEBUG "redirecting irq %d from CPU %d to %d\n", + irq, smp_processor_id(), cpu); + gsc_writel(irq + CPU_IRQ_BASE, + cpu_data[cpu].hpa); + continue; + } +#endif + __do_IRQ(irq, regs); } } - set_eiem(cpu_eiem); + + set_eiem(cpu_eiem); /* restore original mask */ irq_exit(); } @@ -291,12 +363,14 @@ void do_cpu_irq_mask(struct pt_regs *regs) static struct irqaction timer_action = { .handler = timer_interrupt, .name = "timer", + .flags = SA_INTERRUPT, }; #ifdef CONFIG_SMP static struct irqaction ipi_action = { .handler = ipi_interrupt, .name = "IPI", + .flags = SA_INTERRUPT, }; #endif diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c index f94a02ef3d95..a6caf1073085 100644 --- a/arch/parisc/kernel/pci-dma.c +++ b/arch/parisc/kernel/pci-dma.c @@ -33,10 +33,10 @@ #include <asm/uaccess.h> #include <asm/tlbflush.h> /* for purge_tlb_*() macros */ -static struct proc_dir_entry * proc_gsc_root = NULL; +static struct proc_dir_entry * proc_gsc_root __read_mostly = NULL; static int pcxl_proc_info(char *buffer, char **start, off_t offset, int length); -static unsigned long pcxl_used_bytes = 0; -static unsigned long pcxl_used_pages = 0; +static unsigned long pcxl_used_bytes __read_mostly = 0; +static unsigned long pcxl_used_pages __read_mostly = 0; extern unsigned long pcxl_dma_start; /* Start of pcxl dma mapping area */ static spinlock_t pcxl_res_lock; diff --git a/arch/parisc/kernel/pdc_chassis.c b/arch/parisc/kernel/pdc_chassis.c index 52004ae28d20..2a01fe1bdc98 100644 --- a/arch/parisc/kernel/pdc_chassis.c +++ b/arch/parisc/kernel/pdc_chassis.c @@ -30,6 +30,7 @@ #include <linux/kernel.h> #include <linux/reboot.h> #include <linux/notifier.h> +#include <linux/cache.h> #include <asm/pdc_chassis.h> #include <asm/processor.h> @@ -38,8 +39,8 @@ #ifdef CONFIG_PDC_CHASSIS -static int pdc_chassis_old = 0; -static unsigned int pdc_chassis_enabled = 1; +static int pdc_chassis_old __read_mostly = 0; +static unsigned int pdc_chassis_enabled __read_mostly = 1; /** @@ -132,7 +133,7 @@ void __init parisc_pdc_chassis_init(void) { #ifdef CONFIG_PDC_CHASSIS int handle = 0; - if (pdc_chassis_enabled) { + if (likely(pdc_chassis_enabled)) { DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__); /* Let see if we have something to handle... */ @@ -142,7 +143,7 @@ void __init parisc_pdc_chassis_init(void) printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n"); handle = 1; } - else if (pdc_chassis_old) { + else if (unlikely(pdc_chassis_old)) { printk(KERN_INFO "Enabling old style chassis LED panel support.\n"); handle = 1; } @@ -178,7 +179,7 @@ int pdc_chassis_send_status(int message) /* Maybe we should do that in an other way ? */ int retval = 0; #ifdef CONFIG_PDC_CHASSIS - if (pdc_chassis_enabled) { + if (likely(pdc_chassis_enabled)) { DPRINTK(KERN_DEBUG "%s: pdc_chassis_send_status(%d)\n", __FILE__, message); @@ -214,7 +215,7 @@ int pdc_chassis_send_status(int message) } } else retval = -1; #else - if (pdc_chassis_old) { + if (unlikely(pdc_chassis_old)) { switch (message) { case PDC_CHASSIS_DIRECT_BSTART: case PDC_CHASSIS_DIRECT_BCOMPLETE: diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c index 44670d6e06f4..11d406cd0b3e 100644 --- a/arch/parisc/kernel/perf.c +++ b/arch/parisc/kernel/perf.c @@ -42,6 +42,7 @@ * on every box. */ +#include <linux/capability.h> #include <linux/init.h> #include <linux/proc_fs.h> #include <linux/miscdevice.h> @@ -66,10 +67,10 @@ struct rdr_tbl_ent { uint8_t write_control; }; -static int perf_processor_interface = UNKNOWN_INTF; -static int perf_enabled = 0; +static int perf_processor_interface __read_mostly = UNKNOWN_INTF; +static int perf_enabled __read_mostly = 0; static spinlock_t perf_lock; -struct parisc_device *cpu_device = NULL; +struct parisc_device *cpu_device __read_mostly = NULL; /* RDRs to write for PCX-W */ static int perf_rdrs_W[] = @@ -196,8 +197,7 @@ static int perf_open(struct inode *inode, struct file *file); static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos); static ssize_t perf_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos); -static int perf_ioctl(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg); +static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg); static void perf_start_counters(void); static int perf_stop_counters(uint32_t *raddr); static struct rdr_tbl_ent * perf_rdr_get_entry(uint32_t rdr_num); @@ -438,48 +438,56 @@ static void perf_patch_images(void) * must be running on the processor that you wish to change. */ -static int perf_ioctl(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg) +static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long error_start; - uint32_t raddr[4]; + uint32_t raddr[4]; + int error = 0; + lock_kernel(); switch (cmd) { case PA_PERF_ON: /* Start the counters */ perf_start_counters(); - return 0; + break; case PA_PERF_OFF: error_start = perf_stop_counters(raddr); if (error_start != 0) { printk(KERN_ERR "perf_off: perf_stop_counters = %ld\n", error_start); - return -EFAULT; + error = -EFAULT; + break; } /* copy out the Counters */ if (copy_to_user((void __user *)arg, raddr, sizeof (raddr)) != 0) { - return -EFAULT; + error = -EFAULT; + break; } - return 0; + break; case PA_PERF_VERSION: /* Return the version # */ - return put_user(PERF_VERSION, (int *)arg); + error = put_user(PERF_VERSION, (int *)arg); + break; default: - break; + error = -ENOTTY; } - return -ENOTTY; + + unlock_kernel(); + + return error; } static struct file_operations perf_fops = { .llseek = no_llseek, .read = perf_read, .write = perf_write, - .ioctl = perf_ioctl, + .unlocked_ioctl = perf_ioctl, + .compat_ioctl = perf_ioctl, .open = perf_open, .release = perf_release }; diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index fee4f1f09adc..5da41677e70b 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -54,7 +54,7 @@ #include <asm/uaccess.h> #include <asm/unwind.h> -static int hlt_counter; +static int hlt_counter __read_mostly; /* * Power off function, if any @@ -295,7 +295,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp, struct task_struct * p, struct pt_regs * pregs) { struct pt_regs * cregs = &(p->thread.regs); - struct thread_info *ti = p->thread_info; + void *stack = task_stack_page(p); /* We have to use void * instead of a function pointer, because * function pointers aren't a pointer to the function on 64-bit. @@ -322,7 +322,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp, */ if (usp == 1) { /* kernel thread */ - cregs->ksp = (((unsigned long)(ti)) + THREAD_SZ_ALGN); + cregs->ksp = (unsigned long)stack + THREAD_SZ_ALGN; /* Must exit via ret_from_kernel_thread in order * to call schedule_tail() */ @@ -344,7 +344,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp, */ /* Use same stack depth as parent */ - cregs->ksp = ((unsigned long)(ti)) + cregs->ksp = (unsigned long)stack + (pregs->gr[21] & (THREAD_SIZE - 1)); cregs->gr[30] = usp; if (p->personality == PER_HPUX) { diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c index 4f5bbcf1f5a4..6df9f62cecb5 100644 --- a/arch/parisc/kernel/processor.c +++ b/arch/parisc/kernel/processor.c @@ -44,10 +44,10 @@ #include <asm/irq.h> /* for struct irq_region */ #include <asm/parisc-device.h> -struct system_cpuinfo_parisc boot_cpu_data; +struct system_cpuinfo_parisc boot_cpu_data __read_mostly; EXPORT_SYMBOL(boot_cpu_data); -struct cpuinfo_parisc cpu_data[NR_CPUS]; +struct cpuinfo_parisc cpu_data[NR_CPUS] __read_mostly; /* ** PARISC CPU driver - claim "device" and initialize CPU data structures. @@ -378,12 +378,12 @@ show_cpuinfo (struct seq_file *m, void *v) return 0; } -static struct parisc_device_id processor_tbl[] = { +static struct parisc_device_id processor_tbl[] __read_mostly = { { HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID }, { 0, } }; -static struct parisc_driver cpu_driver = { +static struct parisc_driver cpu_driver __read_mostly = { .name = "CPU", .id_table = processor_tbl, .probe = processor_probe diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index b6fe202a620d..27160e8bf15b 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -264,6 +264,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) * sigkill. perhaps it should be put in the status * that it wants to exit. */ + ret = 0; DBG("sys_ptrace(KILL)\n"); if (child->exit_state == EXIT_ZOMBIE) /* already dead */ goto out_tsk; @@ -344,11 +345,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) case PTRACE_GETEVENTMSG: ret = put_user(child->ptrace_message, (unsigned int __user *) data); - goto out; + goto out_tsk; default: ret = ptrace_request(child, request, addr, data); - goto out; + goto out_tsk; } out_wake_notrap: diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c index 73e9c34b0948..4a36ec3f6ac1 100644 --- a/arch/parisc/kernel/setup.c +++ b/arch/parisc/kernel/setup.c @@ -46,15 +46,15 @@ #include <asm/io.h> #include <asm/setup.h> -char command_line[COMMAND_LINE_SIZE]; +char command_line[COMMAND_LINE_SIZE] __read_mostly; /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */ -struct proc_dir_entry * proc_runway_root = NULL; -struct proc_dir_entry * proc_gsc_root = NULL; -struct proc_dir_entry * proc_mckinley_root = NULL; +struct proc_dir_entry * proc_runway_root __read_mostly = NULL; +struct proc_dir_entry * proc_gsc_root __read_mostly = NULL; +struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL; #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA)) -int parisc_bus_is_phys = 1; /* Assume no IOMMU is present */ +int parisc_bus_is_phys __read_mostly = 1; /* Assume no IOMMU is present */ EXPORT_SYMBOL(parisc_bus_is_phys); #endif diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index 82c24e62ab63..3a25a7bd673e 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -296,7 +296,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, struct rt_sigframe __user *frame; unsigned long rp, usp; unsigned long haddr, sigframe_size; - struct siginfo si; int err = 0; #ifdef __LP64__ compat_int_t compat_val; diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c index a9ecf6465784..25564b7ca6bb 100644 --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c @@ -39,7 +39,7 @@ #include <asm/atomic.h> #include <asm/current.h> #include <asm/delay.h> -#include <asm/pgalloc.h> /* for flush_tlb_all() proto/macro */ +#include <asm/tlbflush.h> #include <asm/io.h> #include <asm/irq.h> /* for CPU_IRQ_REGION and friends */ @@ -58,9 +58,9 @@ DEFINE_SPINLOCK(smp_lock); volatile struct task_struct *smp_init_current_idle_task; -static volatile int cpu_now_booting = 0; /* track which CPU is booting */ +static volatile int cpu_now_booting __read_mostly = 0; /* track which CPU is booting */ -static int parisc_max_cpus = 1; +static int parisc_max_cpus __read_mostly = 1; /* online cpus are ones that we've managed to bring up completely * possible cpus are all valid cpu @@ -71,8 +71,8 @@ static int parisc_max_cpus = 1; * empty in the beginning. */ -cpumask_t cpu_online_map = CPU_MASK_NONE; /* Bitmap of online CPUs */ -cpumask_t cpu_possible_map = CPU_MASK_ALL; /* Bitmap of Present CPUs */ +cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE; /* Bitmap of online CPUs */ +cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL; /* Bitmap of Present CPUs */ EXPORT_SYMBOL(cpu_online_map); EXPORT_SYMBOL(cpu_possible_map); @@ -181,12 +181,19 @@ ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) while (ops) { unsigned long which = ffz(~ops); + ops &= ~(1 << which); + switch (which) { + case IPI_NOP: +#if (kDEBUG>=100) + printk(KERN_DEBUG "CPU%d IPI_NOP\n",this_cpu); +#endif /* kDEBUG */ + break; + case IPI_RESCHEDULE: #if (kDEBUG>=100) printk(KERN_DEBUG "CPU%d IPI_RESCHEDULE\n",this_cpu); #endif /* kDEBUG */ - ops &= ~(1 << IPI_RESCHEDULE); /* * Reschedule callback. Everything to be * done is done by the interrupt return path. @@ -197,7 +204,6 @@ ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) #if (kDEBUG>=100) printk(KERN_DEBUG "CPU%d IPI_CALL_FUNC\n",this_cpu); #endif /* kDEBUG */ - ops &= ~(1 << IPI_CALL_FUNC); { volatile struct smp_call_struct *data; void (*func)(void *info); @@ -231,7 +237,6 @@ ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) #if (kDEBUG>=100) printk(KERN_DEBUG "CPU%d IPI_CPU_START\n",this_cpu); #endif /* kDEBUG */ - ops &= ~(1 << IPI_CPU_START); #ifdef ENTRY_SYS_CPUS p->state = STATE_RUNNING; #endif @@ -241,7 +246,6 @@ ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) #if (kDEBUG>=100) printk(KERN_DEBUG "CPU%d IPI_CPU_STOP\n",this_cpu); #endif /* kDEBUG */ - ops &= ~(1 << IPI_CPU_STOP); #ifdef ENTRY_SYS_CPUS #else halt_processor(); @@ -252,13 +256,11 @@ ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) #if (kDEBUG>=100) printk(KERN_DEBUG "CPU%d is alive!\n",this_cpu); #endif /* kDEBUG */ - ops &= ~(1 << IPI_CPU_TEST); break; default: printk(KERN_CRIT "Unknown IPI num on CPU%d: %lu\n", this_cpu, which); - ops &= ~(1 << which); return IRQ_NONE; } /* Switch */ } /* while (ops) */ @@ -312,6 +314,12 @@ smp_send_start(void) { send_IPI_allbutself(IPI_CPU_START); } void smp_send_reschedule(int cpu) { send_IPI_single(cpu, IPI_RESCHEDULE); } +void +smp_send_all_nop(void) +{ + send_IPI_allbutself(IPI_NOP); +} + /** * Run a function on all other CPUs. @@ -338,6 +346,10 @@ smp_call_function (void (*func) (void *info), void *info, int retry, int wait) /* Can deadlock when called with interrupts disabled */ WARN_ON(irqs_disabled()); + + /* can also deadlock if IPIs are disabled */ + WARN_ON((get_eiem() & (1UL<<(CPU_IRQ_MAX - IPI_IRQ))) == 0); + data.func = func; data.info = info; @@ -394,12 +406,10 @@ EXPORT_SYMBOL(smp_call_function); * as we want to ensure all TLB's flushed before proceeding. */ -extern void flush_tlb_all_local(void); - void smp_flush_tlb_all(void) { - on_each_cpu((void (*)(void *))flush_tlb_all_local, NULL, 1, 1); + on_each_cpu(flush_tlb_all_local, NULL, 1, 1); } @@ -475,7 +485,7 @@ void __init smp_callin(void) #endif flush_cache_all_local(); /* start with known state */ - flush_tlb_all_local(); + flush_tlb_all_local(NULL); local_irq_enable(); /* Interrupts have been off until now */ @@ -507,7 +517,7 @@ int __init smp_boot_one_cpu(int cpuid) if (IS_ERR(idle)) panic("SMP: fork failed for CPU:%d", cpuid); - idle->thread_info->cpu = cpuid; + task_thread_info(idle)->cpu = cpuid; /* Let _start know what logical CPU we're booting ** (offset into init_tasks[],cpu_data[]) diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index b29b76b42bb7..d66163492890 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -164,7 +164,7 @@ linux_gateway_entry: #endif STREG %r2, TASK_PT_GR30(%r1) /* ... and save it */ - STREG %r20, TASK_PT_GR20(%r1) + STREG %r20, TASK_PT_GR20(%r1) /* Syscall number */ STREG %r21, TASK_PT_GR21(%r1) STREG %r22, TASK_PT_GR22(%r1) STREG %r23, TASK_PT_GR23(%r1) /* 4th argument */ @@ -527,6 +527,7 @@ lws_compare_and_swap: We *must* giveup this call and fail. */ ldw 4(%sr2,%r20), %r28 /* Load thread register */ + /* WARNING: If cr27 cycles to the same value we have problems */ mfctl %cr27, %r21 /* Get current thread register */ cmpb,<>,n %r21, %r28, cas_lock /* Called recursive? */ b lws_exit /* Return error! */ diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index cded25680787..594930bc4bcf 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -36,8 +36,8 @@ /* xtime and wall_jiffies keep wall-clock time */ extern unsigned long wall_jiffies; -static long clocktick; /* timer cycles per tick */ -static long halftick; +static long clocktick __read_mostly; /* timer cycles per tick */ +static long halftick __read_mostly; #ifdef CONFIG_SMP extern void smp_do_timer(struct pt_regs *regs); diff --git a/arch/parisc/kernel/topology.c b/arch/parisc/kernel/topology.c index ac2a40681414..3ba040050e4c 100644 --- a/arch/parisc/kernel/topology.c +++ b/arch/parisc/kernel/topology.c @@ -20,8 +20,9 @@ #include <linux/init.h> #include <linux/smp.h> #include <linux/cpu.h> +#include <linux/cache.h> -static struct cpu cpu_devices[NR_CPUS]; +static struct cpu cpu_devices[NR_CPUS] __read_mostly; static int __init topology_init(void) { diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c index eaae8a021f9f..de0a1b21cb40 100644 --- a/arch/parisc/kernel/unaligned.c +++ b/arch/parisc/kernel/unaligned.c @@ -122,7 +122,7 @@ #define ERR_NOTHANDLED -1 #define ERR_PAGEFAULT -2 -int unaligned_enabled = 1; +int unaligned_enabled __read_mostly = 1; void die_if_kernel (char *str, struct pt_regs *regs, long err); diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c index db141108412e..cc1c1afc3187 100644 --- a/arch/parisc/kernel/unwind.c +++ b/arch/parisc/kernel/unwind.c @@ -35,7 +35,7 @@ static spinlock_t unwind_lock; * we can call unwind_init as early in the bootup process as * possible (before the slab allocator is initialized) */ -static struct unwind_table kernel_unwind_table; +static struct unwind_table kernel_unwind_table __read_mostly; static LIST_HEAD(unwind_tables); static inline const struct unwind_table_entry * diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index e5fac3e08c7a..6d6436a6b624 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -68,7 +68,7 @@ SECTIONS RODATA /* writeable */ - . = ALIGN(4096); /* Make sure this is paged aligned so + . = ALIGN(4096); /* Make sure this is page aligned so that we can properly leave these as writable */ data_start = .; @@ -105,6 +105,10 @@ SECTIONS . = ALIGN(16); .data.lock_aligned : { *(.data.lock_aligned) } + /* rarely changed data like cpu maps */ + . = ALIGN(16); + .data.read_mostly : { *(.data.read_mostly) } + _edata = .; /* End of data section */ . = ALIGN(16384); /* init_task */ @@ -194,14 +198,7 @@ SECTIONS #endif } - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } + STABS_DEBUG .note 0 : { *(.note) } } diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index 29b998e430e6..720287d46e55 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -36,9 +36,9 @@ extern char _end; /* end of BSS, defined by linker */ extern char __init_begin, __init_end; #ifdef CONFIG_DISCONTIGMEM -struct node_map_data node_data[MAX_NUMNODES]; -bootmem_data_t bmem_data[MAX_NUMNODES]; -unsigned char pfnnid_map[PFNNID_MAP_MAX]; +struct node_map_data node_data[MAX_NUMNODES] __read_mostly; +bootmem_data_t bmem_data[MAX_NUMNODES] __read_mostly; +unsigned char pfnnid_map[PFNNID_MAP_MAX] __read_mostly; #endif static struct resource data_resource = { @@ -58,14 +58,14 @@ static struct resource pdcdata_resource = { .flags = IORESOURCE_BUSY | IORESOURCE_MEM, }; -static struct resource sysram_resources[MAX_PHYSMEM_RANGES]; +static struct resource sysram_resources[MAX_PHYSMEM_RANGES] __read_mostly; /* The following array is initialized from the firmware specific * information retrieved in kernel/inventory.c. */ -physmem_range_t pmem_ranges[MAX_PHYSMEM_RANGES]; -int npmem_ranges; +physmem_range_t pmem_ranges[MAX_PHYSMEM_RANGES] __read_mostly; +int npmem_ranges __read_mostly; #ifdef __LP64__ #define MAX_MEM (~0UL) @@ -73,7 +73,7 @@ int npmem_ranges; #define MAX_MEM (3584U*1024U*1024U) #endif /* !__LP64__ */ -static unsigned long mem_limit = MAX_MEM; +static unsigned long mem_limit __read_mostly = MAX_MEM; static void __init mem_limit_func(void) { @@ -300,6 +300,13 @@ static void __init setup_bootmem(void) max_pfn = start_pfn + npages; } + /* IOMMU is always used to access "high mem" on those boxes + * that can support enough mem that a PCI device couldn't + * directly DMA to any physical addresses. + * ISA DMA support will need to revisit this. + */ + max_low_pfn = max_pfn; + if ((bootmap_pfn - bootmap_start_pfn) != bootmap_pages) { printk(KERN_WARNING "WARNING! bootmap sizing is messed up!\n"); BUG(); @@ -431,11 +438,11 @@ void free_initmem(void) #define SET_MAP_OFFSET(x) ((void *)(((unsigned long)(x) + VM_MAP_OFFSET) \ & ~(VM_MAP_OFFSET-1))) -void *vmalloc_start; +void *vmalloc_start __read_mostly; EXPORT_SYMBOL(vmalloc_start); #ifdef CONFIG_PA11 -unsigned long pcxl_dma_start; +unsigned long pcxl_dma_start __read_mostly; #endif void __init mem_init(void) @@ -475,7 +482,7 @@ int do_check_pgt_cache(int low, int high) return 0; } -unsigned long *empty_zero_page; +unsigned long *empty_zero_page __read_mostly; void show_mem(void) { @@ -998,7 +1005,7 @@ void flush_tlb_all(void) void flush_tlb_all(void) { spin_lock(&sid_lock); - flush_tlb_all_local(); + flush_tlb_all_local(NULL); recycle_sids(); spin_unlock(&sid_lock); } diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c index 5c7a1b3b9326..edd9a9559cba 100644 --- a/arch/parisc/mm/ioremap.c +++ b/arch/parisc/mm/ioremap.c @@ -1,12 +1,9 @@ /* * arch/parisc/mm/ioremap.c * - * Re-map IO memory to kernel address space so that we can access it. - * This is needed for high PCI addresses that aren't mapped in the - * 640k-1MB IO memory area on PC's - * * (C) Copyright 1995 1996 Linus Torvalds * (C) Copyright 2001 Helge Deller <deller@gmx.de> + * (C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org> */ #include <linux/vmalloc.h> @@ -14,81 +11,107 @@ #include <linux/module.h> #include <asm/io.h> #include <asm/pgalloc.h> +#include <asm/tlbflush.h> +#include <asm/cacheflush.h> -static inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned long size, - unsigned long phys_addr, unsigned long flags) +static inline void +remap_area_pte(pte_t *pte, unsigned long address, unsigned long size, + unsigned long phys_addr, unsigned long flags) { - unsigned long end; + unsigned long end, pfn; + pgprot_t pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | + _PAGE_ACCESSED | flags); address &= ~PMD_MASK; + end = address + size; if (end > PMD_SIZE) end = PMD_SIZE; - if (address >= end) - BUG(); + + BUG_ON(address >= end); + + pfn = phys_addr >> PAGE_SHIFT; do { - if (!pte_none(*pte)) { - printk(KERN_ERR "remap_area_pte: page already exists\n"); - BUG(); - } - set_pte(pte, mk_pte_phys(phys_addr, __pgprot(_PAGE_PRESENT | _PAGE_RW | - _PAGE_DIRTY | _PAGE_ACCESSED | flags))); + BUG_ON(!pte_none(*pte)); + + set_pte(pte, pfn_pte(pfn, pgprot)); + address += PAGE_SIZE; - phys_addr += PAGE_SIZE; + pfn++; pte++; } while (address && (address < end)); } -static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size, - unsigned long phys_addr, unsigned long flags) +static inline int +remap_area_pmd(pmd_t *pmd, unsigned long address, unsigned long size, + unsigned long phys_addr, unsigned long flags) { unsigned long end; address &= ~PGDIR_MASK; + end = address + size; if (end > PGDIR_SIZE) end = PGDIR_SIZE; + + BUG_ON(address >= end); + phys_addr -= address; - if (address >= end) - BUG(); do { - pte_t * pte = pte_alloc_kernel(pmd, address); + pte_t *pte = pte_alloc_kernel(pmd, address); if (!pte) return -ENOMEM; - remap_area_pte(pte, address, end - address, address + phys_addr, flags); + + remap_area_pte(pte, address, end - address, + address + phys_addr, flags); + address = (address + PMD_SIZE) & PMD_MASK; pmd++; } while (address && (address < end)); + return 0; } -#if (USE_HPPA_IOREMAP) -static int remap_area_pages(unsigned long address, unsigned long phys_addr, - unsigned long size, unsigned long flags) +#if USE_HPPA_IOREMAP +static int +remap_area_pages(unsigned long address, unsigned long phys_addr, + unsigned long size, unsigned long flags) { - int error; - pgd_t * dir; + pgd_t *dir; + int error = 0; unsigned long end = address + size; + BUG_ON(address >= end); + phys_addr -= address; - dir = pgd_offset(&init_mm, address); + dir = pgd_offset_k(address); + flush_cache_all(); - if (address >= end) - BUG(); + do { + pud_t *pud; pmd_t *pmd; - pmd = pmd_alloc(&init_mm, dir, address); + error = -ENOMEM; + pud = pud_alloc(&init_mm, dir, address); + if (!pud) + break; + + pmd = pmd_alloc(&init_mm, pud, address); if (!pmd) break; + if (remap_area_pmd(pmd, address, end - address, - phys_addr + address, flags)) + phys_addr + address, flags)) break; + error = 0; address = (address + PGDIR_SIZE) & PGDIR_MASK; dir++; } while (address && (address < end)); + flush_tlb_all(); + return error; } #endif /* USE_HPPA_IOREMAP */ @@ -123,8 +146,7 @@ EXPORT_SYMBOL(__raw_bad_addr); /* * Remap an arbitrary physical address space into the kernel virtual - * address space. Needed when the kernel wants to access high addresses - * directly. + * address space. * * NOTE! We need to allow non-page-aligned mappings too: we will obviously * have to convert them into an offset in a page-aligned mapping, but the @@ -148,8 +170,8 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l #endif #else - void * addr; - struct vm_struct * area; + void *addr; + struct vm_struct *area; unsigned long offset, last_addr; /* Don't allow wraparound or zero size */ @@ -167,9 +189,11 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l t_addr = __va(phys_addr); t_end = t_addr + (size - 1); - for(page = virt_to_page(t_addr); page <= virt_to_page(t_end); page++) + for (page = virt_to_page(t_addr); + page <= virt_to_page(t_end); page++) { if(!PageReserved(page)) return NULL; + } } /* @@ -185,11 +209,13 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l area = get_vm_area(size, VM_IOREMAP); if (!area) return NULL; + addr = area->addr; if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) { vfree(addr); return NULL; } + return (void __iomem *) (offset + (char *)addr); #endif } |