#include <linux/poll.h>
#include <linux/ptrace.h>
#include <linux/seq_file.h>
-#include <linux/marker.h>
+#include <linux/slab.h>
#include <asm/io.h>
#include <asm/time.h>
#include <asm/uaccess.h>
#include "spufs.h"
+#include "sputrace.h"
#define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000)
__simple_attr_check_format(__fmt, 0ull); \
return spufs_attr_open(inode, file, __get, __set, __fmt); \
} \
-static struct file_operations __fops = { \
+static const struct file_operations __fops = { \
.owner = THIS_MODULE, \
.open = __fops ## _open, \
.release = spufs_attr_release, \
return VM_FAULT_NOPAGE;
if (ctx->state == SPU_STATE_SAVED) {
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- & ~_PAGE_NO_CACHE);
+ vma->vm_page_prot = pgprot_cached(vma->vm_page_prot);
pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset);
} else {
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE);
+ vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot);
pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT;
}
vm_insert_pfn(vma, address, pfn);
return VM_FAULT_NOPAGE;
}
+static int spufs_mem_mmap_access(struct vm_area_struct *vma,
+ unsigned long address,
+ void *buf, int len, int write)
+{
+ struct spu_context *ctx = vma->vm_file->private_data;
+ unsigned long offset = address - vma->vm_start;
+ char *local_store;
-static struct vm_operations_struct spufs_mem_mmap_vmops = {
+ if (write && !(vma->vm_flags & VM_WRITE))
+ return -EACCES;
+ if (spu_acquire(ctx))
+ return -EINTR;
+ if ((offset + len) > vma->vm_end)
+ len = vma->vm_end - offset;
+ local_store = ctx->ops->get_ls(ctx);
+ if (write)
+ memcpy_toio(local_store + offset, buf, len);
+ else
+ memcpy_fromio(buf, local_store + offset, len);
+ spu_release(ctx);
+ return len;
+}
+
+static const struct vm_operations_struct spufs_mem_mmap_vmops = {
.fault = spufs_mem_mmap_fault,
+ .access = spufs_mem_mmap_access,
};
static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
return -EINVAL;
vma->vm_flags |= VM_IO | VM_PFNMAP;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE);
+ vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot);
vma->vm_ops = &spufs_mem_mmap_vmops;
return 0;
if (offset >= ps_size)
return VM_FAULT_SIGBUS;
+ if (fatal_signal_pending(current))
+ return VM_FAULT_SIGBUS;
+
/*
* Because we release the mmap_sem, the context may be destroyed while
* we're in spu_wait. Grab an extra reference so it isn't destroyed
return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE);
}
-static struct vm_operations_struct spufs_cntl_mmap_vmops = {
+static const struct vm_operations_struct spufs_cntl_mmap_vmops = {
.fault = spufs_cntl_mmap_fault,
};
return -EINVAL;
vma->vm_flags |= VM_IO | VM_PFNMAP;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_cntl_mmap_vmops;
return 0;
int ret;
struct spu_context *ctx = file->private_data;
+ /* pre-check for file position: if we'd return EOF, there's no point
+ * causing a deschedule */
+ if (*pos >= sizeof(ctx->csa.lscsa->gprs))
+ return 0;
+
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
struct spu_lscsa *lscsa = ctx->csa.lscsa;
int ret;
- size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size);
- if (size <= 0)
+ if (*pos >= sizeof(lscsa->gprs))
return -EFBIG;
+
+ size = min_t(ssize_t, sizeof(lscsa->gprs) - *pos, size);
*pos += size;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
- ret = copy_from_user(lscsa->gprs + *pos - size,
+ ret = copy_from_user((char *)lscsa->gprs + *pos - size,
buffer, size) ? -EFAULT : size;
spu_release_saved(ctx);
struct spu_lscsa *lscsa = ctx->csa.lscsa;
int ret;
- size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size);
- if (size <= 0)
+ if (*pos >= sizeof(lscsa->fpcr))
return -EFBIG;
+ size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size);
+
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
#endif
}
-static struct vm_operations_struct spufs_signal1_mmap_vmops = {
+static const struct vm_operations_struct spufs_signal1_mmap_vmops = {
.fault = spufs_signal1_mmap_fault,
};
return -EINVAL;
vma->vm_flags |= VM_IO | VM_PFNMAP;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_signal1_mmap_vmops;
return 0;
#endif
}
-static struct vm_operations_struct spufs_signal2_mmap_vmops = {
+static const struct vm_operations_struct spufs_signal2_mmap_vmops = {
.fault = spufs_signal2_mmap_fault,
};
return -EINVAL;
vma->vm_flags |= VM_IO | VM_PFNMAP;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_signal2_mmap_vmops;
return 0;
return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE);
}
-static struct vm_operations_struct spufs_mss_mmap_vmops = {
+static const struct vm_operations_struct spufs_mss_mmap_vmops = {
.fault = spufs_mss_mmap_fault,
};
return -EINVAL;
vma->vm_flags |= VM_IO | VM_PFNMAP;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_mss_mmap_vmops;
return 0;
return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE);
}
-static struct vm_operations_struct spufs_psmap_mmap_vmops = {
+static const struct vm_operations_struct spufs_psmap_mmap_vmops = {
.fault = spufs_psmap_mmap_fault,
};
return -EINVAL;
vma->vm_flags |= VM_IO | VM_PFNMAP;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_psmap_mmap_vmops;
return 0;
return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE);
}
-static struct vm_operations_struct spufs_mfc_mmap_vmops = {
+static const struct vm_operations_struct spufs_mfc_mmap_vmops = {
.fault = spufs_mfc_mmap_fault,
};
return -EINVAL;
vma->vm_flags |= VM_IO | VM_PFNMAP;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_mfc_mmap_vmops;
return 0;
static int spufs_check_valid_dma(struct mfc_dma_command *cmd)
{
- pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa,
+ pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa,
cmd->ea, cmd->size, cmd->tag, cmd->cmd);
switch (cmd->cmd) {
}
if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) {
- pr_debug("invalid DMA alignment, ea %lx lsa %x\n",
+ pr_debug("invalid DMA alignment, ea %llx lsa %x\n",
cmd->ea, cmd->lsa);
return -EIO;
}
static int spufs_switch_log_open(struct inode *inode, struct file *file)
{
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
+ int rc;
+
+ rc = spu_acquire(ctx);
+ if (rc)
+ return rc;
- /*
- * We (ab-)use the mapping_lock here because it serves the similar
- * purpose for synchronizing open/close elsewhere. Maybe it should
- * be renamed eventually.
- */
- mutex_lock(&ctx->mapping_lock);
if (ctx->switch_log) {
- spin_lock(&ctx->switch_log->lock);
- ctx->switch_log->head = 0;
- ctx->switch_log->tail = 0;
- spin_unlock(&ctx->switch_log->lock);
- } else {
- /*
- * We allocate the switch log data structures on first open.
- * They will never be free because we assume a context will
- * be traced until it goes away.
- */
- ctx->switch_log = kzalloc(sizeof(struct switch_log) +
- SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry),
- GFP_KERNEL);
- if (!ctx->switch_log)
- goto out;
- spin_lock_init(&ctx->switch_log->lock);
- init_waitqueue_head(&ctx->switch_log->wait);
+ rc = -EBUSY;
+ goto out;
}
- mutex_unlock(&ctx->mapping_lock);
+
+ ctx->switch_log = kmalloc(sizeof(struct switch_log) +
+ SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry),
+ GFP_KERNEL);
+
+ if (!ctx->switch_log) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ ctx->switch_log->head = ctx->switch_log->tail = 0;
+ init_waitqueue_head(&ctx->switch_log->wait);
+ rc = 0;
+
+out:
+ spu_release(ctx);
+ return rc;
+}
+
+static int spufs_switch_log_release(struct inode *inode, struct file *file)
+{
+ struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
+ int rc;
+
+ rc = spu_acquire(ctx);
+ if (rc)
+ return rc;
+
+ kfree(ctx->switch_log);
+ ctx->switch_log = NULL;
+ spu_release(ctx);
return 0;
- out:
- mutex_unlock(&ctx->mapping_lock);
- return -ENOMEM;
}
static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n)
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
int error = 0, cnt = 0;
- if (!buf || len < 0)
+ if (!buf)
return -EINVAL;
+ error = spu_acquire(ctx);
+ if (error)
+ return error;
+
while (cnt < len) {
char tbuf[128];
int width;
- if (file->f_flags & O_NONBLOCK) {
- if (spufs_switch_log_used(ctx) <= 0)
- return cnt ? cnt : -EAGAIN;
- } else {
- /* Wait for data in buffer */
- error = wait_event_interruptible(ctx->switch_log->wait,
- spufs_switch_log_used(ctx) > 0);
- if (error)
+ if (spufs_switch_log_used(ctx) == 0) {
+ if (cnt > 0) {
+ /* If there's data ready to go, we can
+ * just return straight away */
+ break;
+
+ } else if (file->f_flags & O_NONBLOCK) {
+ error = -EAGAIN;
break;
- }
- spin_lock(&ctx->switch_log->lock);
- if (ctx->switch_log->head == ctx->switch_log->tail) {
- /* multiple readers race? */
- spin_unlock(&ctx->switch_log->lock);
- continue;
+ } else {
+ /* spufs_wait will drop the mutex and
+ * re-acquire, but since we're in read(), the
+ * file cannot be _released (and so
+ * ctx->switch_log is stable).
+ */
+ error = spufs_wait(ctx->switch_log->wait,
+ spufs_switch_log_used(ctx) > 0);
+
+ /* On error, spufs_wait returns without the
+ * state mutex held */
+ if (error)
+ return error;
+
+ /* We may have had entries read from underneath
+ * us while we dropped the mutex in spufs_wait,
+ * so re-check */
+ if (spufs_switch_log_used(ctx) == 0)
+ continue;
+ }
}
width = switch_log_sprint(ctx, tbuf, sizeof(tbuf));
- if (width < len) {
+ if (width < len)
ctx->switch_log->tail =
(ctx->switch_log->tail + 1) %
SWITCH_LOG_BUFSIZE;
- }
-
- spin_unlock(&ctx->switch_log->lock);
-
- /*
- * If the record is greater than space available return
- * partial buffer (so far)
- */
- if (width >= len)
+ else
+ /* If the record is greater than space available return
+ * partial buffer (so far) */
break;
error = copy_to_user(buf + cnt, tbuf, width);
cnt += width;
}
+ spu_release(ctx);
+
return cnt == 0 ? error : cnt;
}
struct inode *inode = file->f_path.dentry->d_inode;
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
unsigned int mask = 0;
+ int rc;
poll_wait(file, &ctx->switch_log->wait, wait);
+ rc = spu_acquire(ctx);
+ if (rc)
+ return rc;
+
if (spufs_switch_log_used(ctx) > 0)
mask |= POLLIN;
+ spu_release(ctx);
+
return mask;
}
static const struct file_operations spufs_switch_log_fops = {
- .owner = THIS_MODULE,
- .open = spufs_switch_log_open,
- .read = spufs_switch_log_read,
- .poll = spufs_switch_log_poll,
+ .owner = THIS_MODULE,
+ .open = spufs_switch_log_open,
+ .read = spufs_switch_log_read,
+ .poll = spufs_switch_log_poll,
+ .release = spufs_switch_log_release,
};
+/**
+ * Log a context switch event to a switch log reader.
+ *
+ * Must be called with ctx->state_mutex held.
+ */
void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
u32 type, u32 val)
{
if (!ctx->switch_log)
return;
- spin_lock(&ctx->switch_log->lock);
if (spufs_switch_log_avail(ctx) > 1) {
struct switch_log_entry *p;
ctx->switch_log->head =
(ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE;
}
- spin_unlock(&ctx->switch_log->lock);
wake_up(&ctx->switch_log->wait);
}
}
seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)"
- " %c %lx %lx %lx %lx %x %x\n",
+ " %c %llx %llx %llx %llx %x %x\n",
ctx->state == SPU_STATE_SAVED ? 'S' : 'R',
ctx->flags,
ctx->sched_flags,
.release = single_release,
};
-struct spufs_tree_descr spufs_dir_contents[] = {
+const struct spufs_tree_descr spufs_dir_contents[] = {
{ "capabilities", &spufs_caps_fops, 0444, },
- { "mem", &spufs_mem_fops, 0666, },
- { "regs", &spufs_regs_fops, 0666, },
+ { "mem", &spufs_mem_fops, 0666, LS_SIZE, },
+ { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), },
{ "mbox", &spufs_mbox_fops, 0444, },
{ "ibox", &spufs_ibox_fops, 0444, },
{ "wbox", &spufs_wbox_fops, 0222, },
- { "mbox_stat", &spufs_mbox_stat_fops, 0444, },
- { "ibox_stat", &spufs_ibox_stat_fops, 0444, },
- { "wbox_stat", &spufs_wbox_stat_fops, 0444, },
+ { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
+ { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
+ { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
{ "signal1", &spufs_signal1_fops, 0666, },
{ "signal2", &spufs_signal2_fops, 0666, },
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "signal2_type", &spufs_signal2_type, 0666, },
{ "cntl", &spufs_cntl_fops, 0666, },
- { "fpcr", &spufs_fpcr_fops, 0666, },
+ { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), },
{ "lslr", &spufs_lslr_ops, 0444, },
{ "mfc", &spufs_mfc_fops, 0666, },
{ "mss", &spufs_mss_fops, 0666, },
{ "decr_status", &spufs_decr_status_ops, 0666, },
{ "event_mask", &spufs_event_mask_ops, 0666, },
{ "event_status", &spufs_event_status_ops, 0444, },
- { "psmap", &spufs_psmap_fops, 0666, },
+ { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
{ "phys-id", &spufs_id_ops, 0666, },
{ "object-id", &spufs_object_id_ops, 0666, },
- { "mbox_info", &spufs_mbox_info_fops, 0444, },
- { "ibox_info", &spufs_ibox_info_fops, 0444, },
- { "wbox_info", &spufs_wbox_info_fops, 0444, },
- { "dma_info", &spufs_dma_info_fops, 0444, },
- { "proxydma_info", &spufs_proxydma_info_fops, 0444, },
+ { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), },
+ { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), },
+ { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), },
+ { "dma_info", &spufs_dma_info_fops, 0444,
+ sizeof(struct spu_dma_info), },
+ { "proxydma_info", &spufs_proxydma_info_fops, 0444,
+ sizeof(struct spu_proxydma_info)},
{ "tid", &spufs_tid_fops, 0444, },
{ "stat", &spufs_stat_fops, 0444, },
{ "switch_log", &spufs_switch_log_fops, 0444 },
- { ".ctx", &spufs_ctx_fops, 0444, },
{},
};
-struct spufs_tree_descr spufs_dir_nosched_contents[] = {
+const struct spufs_tree_descr spufs_dir_nosched_contents[] = {
{ "capabilities", &spufs_caps_fops, 0444, },
- { "mem", &spufs_mem_fops, 0666, },
+ { "mem", &spufs_mem_fops, 0666, LS_SIZE, },
{ "mbox", &spufs_mbox_fops, 0444, },
{ "ibox", &spufs_ibox_fops, 0444, },
{ "wbox", &spufs_wbox_fops, 0222, },
- { "mbox_stat", &spufs_mbox_stat_fops, 0444, },
- { "ibox_stat", &spufs_ibox_stat_fops, 0444, },
- { "wbox_stat", &spufs_wbox_stat_fops, 0444, },
+ { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
+ { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
+ { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
{ "signal1", &spufs_signal1_nosched_fops, 0222, },
{ "signal2", &spufs_signal2_nosched_fops, 0222, },
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "mfc", &spufs_mfc_fops, 0666, },
{ "cntl", &spufs_cntl_fops, 0666, },
{ "npc", &spufs_npc_ops, 0666, },
- { "psmap", &spufs_psmap_fops, 0666, },
+ { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
{ "phys-id", &spufs_id_ops, 0666, },
{ "object-id", &spufs_object_id_ops, 0666, },
{ "tid", &spufs_tid_fops, 0444, },
{ "stat", &spufs_stat_fops, 0444, },
+ {},
+};
+
+const struct spufs_tree_descr spufs_dir_debug_contents[] = {
{ ".ctx", &spufs_ctx_fops, 0444, },
{},
};
-struct spufs_coredump_reader spufs_coredump_read[] = {
+const struct spufs_coredump_reader spufs_coredump_read[] = {
{ "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])},
{ "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) },
{ "lslr", NULL, spufs_lslr_get, 19 },
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff