* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#undef DEBUG
-
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/module.h>
spufs_mem_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
- struct spu_context *ctx = i->i_ctx;
- file->private_data = ctx;
- file->f_mapping = inode->i_mapping;
- ctx->local_store = inode->i_mapping;
+ file->private_data = i->i_ctx;
+ file->f_mapping = i->i_ctx->local_store;
return 0;
}
return ret;
}
-#ifdef CONFIG_SPUFS_MMAP
+#ifdef CONFIG_SPARSEMEM
static struct page *
spufs_mem_mmap_nopage(struct vm_area_struct *vma,
unsigned long address, int *type)
.read = spufs_mem_read,
.write = spufs_mem_write,
.llseek = generic_file_llseek,
-#ifdef CONFIG_SPUFS_MMAP
+#ifdef CONFIG_SPARSEMEM
.mmap = spufs_mem_mmap,
#endif
};
-#ifdef CONFIG_SPUFS_MMAP
-static struct page *spufs_ps_nopage(struct vm_area_struct *vma,
- unsigned long address,
- int *type, unsigned long ps_offs)
-{
- struct page *page = NOPAGE_SIGBUS;
- int fault_type = VM_FAULT_SIGBUS;
- struct spu_context *ctx = vma->vm_file->private_data;
- unsigned long offset = address - vma->vm_start;
- unsigned long area;
- int ret;
-
- offset += vma->vm_pgoff << PAGE_SHIFT;
- if (offset >= 0x4000)
- goto out;
-
- ret = spu_acquire_runnable(ctx);
- if (ret)
- goto out;
-
- area = ctx->spu->problem_phys + ps_offs;
- page = pfn_to_page((area + offset) >> PAGE_SHIFT);
- fault_type = VM_FAULT_MINOR;
- page_cache_get(page);
-
- spu_release(ctx);
-
- out:
- if (type)
- *type = fault_type;
-
- return page;
-}
-
-static struct page *spufs_cntl_mmap_nopage(struct vm_area_struct *vma,
- unsigned long address, int *type)
-{
- return spufs_ps_nopage(vma, address, type, 0x4000);
-}
-
-static struct vm_operations_struct spufs_cntl_mmap_vmops = {
- .nopage = spufs_cntl_mmap_nopage,
-};
-
-/*
- * mmap support for problem state control area [0x4000 - 0x4fff].
- * Mapping this area requires that the application have CAP_SYS_RAWIO,
- * as these registers require special care when read/writing.
- */
-static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma)
-{
- if (!(vma->vm_flags & VM_SHARED))
- return -EINVAL;
-
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
-
- vma->vm_flags |= VM_RESERVED;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
-
- vma->vm_ops = &spufs_cntl_mmap_vmops;
- return 0;
-}
-#endif
-
-static int spufs_cntl_open(struct inode *inode, struct file *file)
-{
- struct spufs_inode_info *i = SPUFS_I(inode);
- struct spu_context *ctx = i->i_ctx;
-
- file->private_data = ctx;
- file->f_mapping = inode->i_mapping;
- ctx->cntl = inode->i_mapping;
- return 0;
-}
-
-static ssize_t
-spufs_cntl_read(struct file *file, char __user *buffer,
- size_t size, loff_t *pos)
-{
- /* FIXME: read from spu status */
- return -EINVAL;
-}
-
-static ssize_t
-spufs_cntl_write(struct file *file, const char __user *buffer,
- size_t size, loff_t *pos)
-{
- /* FIXME: write to runctl bit */
- return -EINVAL;
-}
-
-static struct file_operations spufs_cntl_fops = {
- .open = spufs_cntl_open,
- .read = spufs_cntl_read,
- .write = spufs_cntl_write,
-#ifdef CONFIG_SPUFS_MMAP
- .mmap = spufs_cntl_mmap,
-#endif
-};
-
static int
spufs_regs_open(struct inode *inode, struct file *file)
{
.read = spufs_wbox_stat_read,
};
-static int spufs_signal1_open(struct inode *inode, struct file *file)
-{
- struct spufs_inode_info *i = SPUFS_I(inode);
- struct spu_context *ctx = i->i_ctx;
- file->private_data = ctx;
- file->f_mapping = inode->i_mapping;
- ctx->signal1 = inode->i_mapping;
- return nonseekable_open(inode, file);
-}
-
static ssize_t spufs_signal1_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
return 4;
}
-#ifdef CONFIG_SPUFS_MMAP
-static struct page *spufs_signal1_mmap_nopage(struct vm_area_struct *vma,
- unsigned long address, int *type)
-{
- return spufs_ps_nopage(vma, address, type, 0x14000);
-}
-
-static struct vm_operations_struct spufs_signal1_mmap_vmops = {
- .nopage = spufs_signal1_mmap_nopage,
-};
-
-static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma)
-{
- if (!(vma->vm_flags & VM_SHARED))
- return -EINVAL;
-
- vma->vm_flags |= VM_RESERVED;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
-
- vma->vm_ops = &spufs_signal1_mmap_vmops;
- return 0;
-}
-#endif
-
static struct file_operations spufs_signal1_fops = {
- .open = spufs_signal1_open,
+ .open = spufs_pipe_open,
.read = spufs_signal1_read,
.write = spufs_signal1_write,
-#ifdef CONFIG_SPUFS_MMAP
- .mmap = spufs_signal1_mmap,
-#endif
};
-static int spufs_signal2_open(struct inode *inode, struct file *file)
-{
- struct spufs_inode_info *i = SPUFS_I(inode);
- struct spu_context *ctx = i->i_ctx;
- file->private_data = ctx;
- file->f_mapping = inode->i_mapping;
- ctx->signal2 = inode->i_mapping;
- return nonseekable_open(inode, file);
-}
-
static ssize_t spufs_signal2_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
return 4;
}
-#ifdef CONFIG_SPUFS_MMAP
-static struct page *spufs_signal2_mmap_nopage(struct vm_area_struct *vma,
- unsigned long address, int *type)
-{
- return spufs_ps_nopage(vma, address, type, 0x1c000);
-}
-
-static struct vm_operations_struct spufs_signal2_mmap_vmops = {
- .nopage = spufs_signal2_mmap_nopage,
-};
-
-static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma)
-{
- if (!(vma->vm_flags & VM_SHARED))
- return -EINVAL;
-
- /* FIXME: */
- vma->vm_flags |= VM_RESERVED;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
-
- vma->vm_ops = &spufs_signal2_mmap_vmops;
- return 0;
-}
-#endif
-
static struct file_operations spufs_signal2_fops = {
- .open = spufs_signal2_open,
+ .open = spufs_pipe_open,
.read = spufs_signal2_read,
.write = spufs_signal2_write,
-#ifdef CONFIG_SPUFS_MMAP
- .mmap = spufs_signal2_mmap,
-#endif
};
static void spufs_signal1_type_set(void *data, u64 val)
DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get,
spufs_signal2_type_set, "%llu");
-#ifdef CONFIG_SPUFS_MMAP
-static struct page *spufs_mss_mmap_nopage(struct vm_area_struct *vma,
- unsigned long address, int *type)
-{
- return spufs_ps_nopage(vma, address, type, 0x0000);
-}
-
-static struct vm_operations_struct spufs_mss_mmap_vmops = {
- .nopage = spufs_mss_mmap_nopage,
-};
-
-/*
- * mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
- * Mapping this area requires that the application have CAP_SYS_RAWIO,
- * as these registers require special care when read/writing.
- */
-static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma)
-{
- if (!(vma->vm_flags & VM_SHARED))
- return -EINVAL;
-
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
-
- vma->vm_flags |= VM_RESERVED;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
-
- vma->vm_ops = &spufs_mss_mmap_vmops;
- return 0;
-}
-#endif
-
-static int spufs_mss_open(struct inode *inode, struct file *file)
-{
- struct spufs_inode_info *i = SPUFS_I(inode);
-
- file->private_data = i->i_ctx;
- return nonseekable_open(inode, file);
-}
-
-static struct file_operations spufs_mss_fops = {
- .open = spufs_mss_open,
-#ifdef CONFIG_SPUFS_MMAP
- .mmap = spufs_mss_mmap,
-#endif
-};
-
-
-#ifdef CONFIG_SPUFS_MMAP
-static struct page *spufs_mfc_mmap_nopage(struct vm_area_struct *vma,
- unsigned long address, int *type)
-{
- return spufs_ps_nopage(vma, address, type, 0x3000);
-}
-
-static struct vm_operations_struct spufs_mfc_mmap_vmops = {
- .nopage = spufs_mfc_mmap_nopage,
-};
-
-/*
- * mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
- * Mapping this area requires that the application have CAP_SYS_RAWIO,
- * as these registers require special care when read/writing.
- */
-static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma)
-{
- if (!(vma->vm_flags & VM_SHARED))
- return -EINVAL;
-
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
-
- vma->vm_flags |= VM_RESERVED;
- vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
- | _PAGE_NO_CACHE | _PAGE_GUARDED);
-
- vma->vm_ops = &spufs_mfc_mmap_vmops;
- return 0;
-}
-#endif
-
-static int spufs_mfc_open(struct inode *inode, struct file *file)
-{
- struct spufs_inode_info *i = SPUFS_I(inode);
- struct spu_context *ctx = i->i_ctx;
-
- /* we don't want to deal with DMA into other processes */
- if (ctx->owner != current->mm)
- return -EINVAL;
-
- if (atomic_read(&inode->i_count) != 1)
- return -EBUSY;
-
- file->private_data = ctx;
- return nonseekable_open(inode, file);
-}
-
-/* interrupt-level mfc callback function. */
-void spufs_mfc_callback(struct spu *spu)
-{
- struct spu_context *ctx = spu->ctx;
-
- wake_up_all(&ctx->mfc_wq);
-
- pr_debug("%s %s\n", __FUNCTION__, spu->name);
- if (ctx->mfc_fasync) {
- u32 free_elements, tagstatus;
- unsigned int mask;
-
- /* no need for spu_acquire in interrupt context */
- free_elements = ctx->ops->get_mfc_free_elements(ctx);
- tagstatus = ctx->ops->read_mfc_tagstatus(ctx);
-
- mask = 0;
- if (free_elements & 0xffff)
- mask |= POLLOUT;
- if (tagstatus & ctx->tagwait)
- mask |= POLLIN;
-
- kill_fasync(&ctx->mfc_fasync, SIGIO, mask);
- }
-}
-
-static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status)
-{
- /* See if there is one tag group is complete */
- /* FIXME we need locking around tagwait */
- *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait;
- ctx->tagwait &= ~*status;
- if (*status)
- return 1;
-
- /* enable interrupt waiting for any tag group,
- may silently fail if interrupts are already enabled */
- ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
- return 0;
-}
-
-static ssize_t spufs_mfc_read(struct file *file, char __user *buffer,
- size_t size, loff_t *pos)
-{
- struct spu_context *ctx = file->private_data;
- int ret = -EINVAL;
- u32 status;
-
- if (size != 4)
- goto out;
-
- spu_acquire(ctx);
- if (file->f_flags & O_NONBLOCK) {
- status = ctx->ops->read_mfc_tagstatus(ctx);
- if (!(status & ctx->tagwait))
- ret = -EAGAIN;
- else
- ctx->tagwait &= ~status;
- } else {
- ret = spufs_wait(ctx->mfc_wq,
- spufs_read_mfc_tagstatus(ctx, &status));
- }
- spu_release(ctx);
-
- if (ret)
- goto out;
-
- ret = 4;
- if (copy_to_user(buffer, &status, 4))
- ret = -EFAULT;
-
-out:
- return ret;
-}
-
-static int spufs_check_valid_dma(struct mfc_dma_command *cmd)
-{
- pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa,
- cmd->ea, cmd->size, cmd->tag, cmd->cmd);
-
- switch (cmd->cmd) {
- case MFC_PUT_CMD:
- case MFC_PUTF_CMD:
- case MFC_PUTB_CMD:
- case MFC_GET_CMD:
- case MFC_GETF_CMD:
- case MFC_GETB_CMD:
- break;
- default:
- pr_debug("invalid DMA opcode %x\n", cmd->cmd);
- return -EIO;
- }
-
- if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) {
- pr_debug("invalid DMA alignment, ea %lx lsa %x\n",
- cmd->ea, cmd->lsa);
- return -EIO;
- }
-
- switch (cmd->size & 0xf) {
- case 1:
- break;
- case 2:
- if (cmd->lsa & 1)
- goto error;
- break;
- case 4:
- if (cmd->lsa & 3)
- goto error;
- break;
- case 8:
- if (cmd->lsa & 7)
- goto error;
- break;
- case 0:
- if (cmd->lsa & 15)
- goto error;
- break;
- error:
- default:
- pr_debug("invalid DMA alignment %x for size %x\n",
- cmd->lsa & 0xf, cmd->size);
- return -EIO;
- }
-
- if (cmd->size > 16 * 1024) {
- pr_debug("invalid DMA size %x\n", cmd->size);
- return -EIO;
- }
-
- if (cmd->tag & 0xfff0) {
- /* we reserve the higher tag numbers for kernel use */
- pr_debug("invalid DMA tag\n");
- return -EIO;
- }
-
- if (cmd->class) {
- /* not supported in this version */
- pr_debug("invalid DMA class\n");
- return -EIO;
- }
-
- return 0;
-}
-
-static int spu_send_mfc_command(struct spu_context *ctx,
- struct mfc_dma_command cmd,
- int *error)
-{
- *error = ctx->ops->send_mfc_command(ctx, &cmd);
- if (*error == -EAGAIN) {
- /* wait for any tag group to complete
- so we have space for the new command */
- ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
- /* try again, because the queue might be
- empty again */
- *error = ctx->ops->send_mfc_command(ctx, &cmd);
- if (*error == -EAGAIN)
- return 0;
- }
- return 1;
-}
-
-static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer,
- size_t size, loff_t *pos)
-{
- struct spu_context *ctx = file->private_data;
- struct mfc_dma_command cmd;
- int ret = -EINVAL;
-
- if (size != sizeof cmd)
- goto out;
-
- ret = -EFAULT;
- if (copy_from_user(&cmd, buffer, sizeof cmd))
- goto out;
-
- ret = spufs_check_valid_dma(&cmd);
- if (ret)
- goto out;
-
- spu_acquire_runnable(ctx);
- if (file->f_flags & O_NONBLOCK) {
- ret = ctx->ops->send_mfc_command(ctx, &cmd);
- } else {
- int status;
- ret = spufs_wait(ctx->mfc_wq,
- spu_send_mfc_command(ctx, cmd, &status));
- if (status)
- ret = status;
- }
- spu_release(ctx);
-
- if (ret)
- goto out;
-
- ctx->tagwait |= 1 << cmd.tag;
-
-out:
- return ret;
-}
-
-static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait)
-{
- struct spu_context *ctx = file->private_data;
- u32 free_elements, tagstatus;
- unsigned int mask;
-
- spu_acquire(ctx);
- ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2);
- free_elements = ctx->ops->get_mfc_free_elements(ctx);
- tagstatus = ctx->ops->read_mfc_tagstatus(ctx);
- spu_release(ctx);
-
- poll_wait(file, &ctx->mfc_wq, wait);
-
- mask = 0;
- if (free_elements & 0xffff)
- mask |= POLLOUT | POLLWRNORM;
- if (tagstatus & ctx->tagwait)
- mask |= POLLIN | POLLRDNORM;
-
- pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__,
- free_elements, tagstatus, ctx->tagwait);
-
- return mask;
-}
-
-static int spufs_mfc_flush(struct file *file, fl_owner_t id)
-{
- struct spu_context *ctx = file->private_data;
- int ret;
-
- spu_acquire(ctx);
-#if 0
-/* this currently hangs */
- ret = spufs_wait(ctx->mfc_wq,
- ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2));
- if (ret)
- goto out;
- ret = spufs_wait(ctx->mfc_wq,
- ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait);
-out:
-#else
- ret = 0;
-#endif
- spu_release(ctx);
-
- return ret;
-}
-
-static int spufs_mfc_fsync(struct file *file, struct dentry *dentry,
- int datasync)
-{
- return spufs_mfc_flush(file, NULL);
-}
-
-static int spufs_mfc_fasync(int fd, struct file *file, int on)
-{
- struct spu_context *ctx = file->private_data;
-
- return fasync_helper(fd, file, on, &ctx->mfc_fasync);
-}
-
-static struct file_operations spufs_mfc_fops = {
- .open = spufs_mfc_open,
- .read = spufs_mfc_read,
- .write = spufs_mfc_write,
- .poll = spufs_mfc_poll,
- .flush = spufs_mfc_flush,
- .fsync = spufs_mfc_fsync,
- .fasync = spufs_mfc_fasync,
-#ifdef CONFIG_SPUFS_MMAP
- .mmap = spufs_mfc_mmap,
-#endif
-};
-
static void spufs_npc_set(void *data, u64 val)
{
struct spu_context *ctx = data;
DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set,
"%llx\n")
-static u64 spufs_id_get(void *data)
-{
- struct spu_context *ctx = data;
- u64 num;
-
- spu_acquire(ctx);
- if (ctx->state == SPU_STATE_RUNNABLE)
- num = ctx->spu->number;
- else
- num = (unsigned int)-1;
- spu_release(ctx);
-
- return num;
-}
-DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, 0, "0x%llx\n")
-
struct tree_descr spufs_dir_contents[] = {
{ "mem", &spufs_mem_fops, 0666, },
{ "regs", &spufs_regs_fops, 0666, },
{ "signal2", &spufs_signal2_fops, 0666, },
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "signal2_type", &spufs_signal2_type, 0666, },
- { "mss", &spufs_mss_fops, 0666, },
- { "mfc", &spufs_mfc_fops, 0666, },
- { "cntl", &spufs_cntl_fops, 0666, },
{ "npc", &spufs_npc_ops, 0666, },
{ "fpcr", &spufs_fpcr_fops, 0666, },
{ "decr", &spufs_decr_ops, 0666, },
{ "spu_tag_mask", &spufs_spu_tag_mask_ops, 0666, },
{ "event_mask", &spufs_event_mask_ops, 0666, },
{ "srr0", &spufs_srr0_ops, 0666, },
- { "phys-id", &spufs_id_ops, 0666, },
{},
};
git://git.onelab.eu / linux-2.6.git / blobdiff