spufs_mem_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
- file->private_data = i->i_ctx;
- file->f_mapping = i->i_ctx->local_store;
+ struct spu_context *ctx = i->i_ctx;
+ file->private_data = ctx;
+ file->f_mapping = inode->i_mapping;
+ ctx->local_store = inode->i_mapping;
return 0;
}
return ret;
}
-#ifdef CONFIG_SPARSEMEM
+#ifdef CONFIG_SPUFS_MMAP
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_SPARSEMEM
+#ifdef CONFIG_SPUFS_MMAP
.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);
+
+ 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);
+
+ vma->vm_ops = &spufs_signal1_mmap_vmops;
+ return 0;
+}
+#endif
+
static struct file_operations spufs_signal1_fops = {
- .open = spufs_pipe_open,
+ .open = spufs_signal1_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);
+
+ vma->vm_ops = &spufs_signal2_mmap_vmops;
+ return 0;
+}
+#endif
+
static struct file_operations spufs_signal2_fops = {
- .open = spufs_pipe_open,
+ .open = spufs_signal2_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_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);
+
+ vma->vm_ops = &spufs_mfc_mmap_vmops;
+ return 0;
+}
+#endif
static int spufs_mfc_open(struct inode *inode, struct file *file)
{
.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)
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "signal2_type", &spufs_signal2_type, 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, },
projects / linux-2.6 / commitdiff