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-rw-r--r--shared-core/i915_dma.c556
-rw-r--r--shared-core/i915_drv.h8
2 files changed, 11 insertions, 553 deletions
diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index 2d26fcc1..1ab4f194 100644
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -583,8 +583,8 @@ static int i915_dispatch_cmdbuffer(struct drm_device * dev,
return 0;
}
-static int i915_dispatch_batchbuffer(struct drm_device * dev,
- drm_i915_batchbuffer_t * batch)
+int i915_dispatch_batchbuffer(struct drm_device * dev,
+ drm_i915_batchbuffer_t * batch)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_clip_rect __user *boxes = batch->cliprects;
@@ -711,7 +711,7 @@ void i915_dispatch_flip(struct drm_device * dev, int planes, int sync)
#endif
}
-static int i915_quiescent(struct drm_device *dev)
+int i915_quiescent(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
@@ -796,556 +796,6 @@ static int i915_cmdbuffer(struct drm_device *dev, void *data,
#define DRM_DEBUG_RELOCATION 0
#endif
-#ifdef I915_HAVE_BUFFER
-
-struct i915_relocatee_info {
- struct drm_buffer_object *buf;
- unsigned long offset;
- u32 *data_page;
- unsigned page_offset;
- struct drm_bo_kmap_obj kmap;
- int is_iomem;
-};
-
-struct drm_i915_validate_buffer {
- struct drm_buffer_object *buffer;
- struct drm_bo_info_rep rep;
- int presumed_offset_correct;
- void __user *data;
- int ret;
-};
-
-static void i915_dereference_buffers_locked(struct drm_i915_validate_buffer *buffers,
- unsigned num_buffers)
-{
- while (num_buffers--)
- drm_bo_usage_deref_locked(&buffers[num_buffers].buffer);
-}
-
-int i915_apply_reloc(struct drm_file *file_priv, int num_buffers,
- struct drm_i915_validate_buffer *buffers,
- struct i915_relocatee_info *relocatee,
- uint32_t *reloc)
-{
- unsigned index;
- unsigned long new_cmd_offset;
- u32 val;
- int ret, i;
- int buf_index = -1;
-
- /*
- * FIXME: O(relocs * buffers) complexity.
- */
-
- for (i = 0; i <= num_buffers; i++)
- if (buffers[i].buffer)
- if (reloc[2] == buffers[i].buffer->base.hash.key)
- buf_index = i;
-
- if (buf_index == -1) {
- DRM_ERROR("Illegal relocation buffer %08X\n", reloc[2]);
- return -EINVAL;
- }
-
- /*
- * Short-circuit relocations that were correctly
- * guessed by the client
- */
- if (buffers[buf_index].presumed_offset_correct && !DRM_DEBUG_RELOCATION)
- return 0;
-
- new_cmd_offset = reloc[0];
- if (!relocatee->data_page ||
- !drm_bo_same_page(relocatee->offset, new_cmd_offset)) {
- drm_bo_kunmap(&relocatee->kmap);
- relocatee->data_page = NULL;
- relocatee->offset = new_cmd_offset;
-
- /*
- * Note on buffer idle:
- * Since we're applying relocations, this part of the
- * buffer is obviously not used by the GPU and we don't
- * need to wait for buffer idle. This is an important
- * consideration for user-space buffer pools.
- */
-
- ret = drm_bo_kmap(relocatee->buf, new_cmd_offset >> PAGE_SHIFT,
- 1, &relocatee->kmap);
- if (ret) {
- DRM_ERROR("Could not map command buffer to apply relocs\n %08lx", new_cmd_offset);
- return ret;
- }
- relocatee->data_page = drm_bmo_virtual(&relocatee->kmap,
- &relocatee->is_iomem);
- relocatee->page_offset = (relocatee->offset & PAGE_MASK);
- }
-
- val = buffers[buf_index].buffer->offset;
- index = (reloc[0] - relocatee->page_offset) >> 2;
-
- /* add in validate */
- val = val + reloc[1];
-
- if (DRM_DEBUG_RELOCATION) {
- if (buffers[buf_index].presumed_offset_correct &&
- relocatee->data_page[index] != val) {
- DRM_DEBUG ("Relocation mismatch source %d target %d buffer %d user %08x kernel %08x\n",
- reloc[0], reloc[1], buf_index, relocatee->data_page[index], val);
- }
- }
-
- if (relocatee->is_iomem)
- iowrite32(val, relocatee->data_page + index);
- else
- relocatee->data_page[index] = val;
- return 0;
-}
-
-int i915_process_relocs(struct drm_file *file_priv,
- uint32_t buf_handle,
- uint32_t __user **reloc_user_ptr,
- struct i915_relocatee_info *relocatee,
- struct drm_i915_validate_buffer *buffers,
- uint32_t num_buffers)
-{
- int ret, reloc_stride;
- uint32_t cur_offset;
- uint32_t reloc_count;
- uint32_t reloc_type;
- uint32_t reloc_buf_size;
- uint32_t *reloc_buf = NULL;
- int i;
-
- /* do a copy from user from the user ptr */
- ret = get_user(reloc_count, *reloc_user_ptr);
- if (ret) {
- DRM_ERROR("Could not map relocation buffer.\n");
- goto out;
- }
-
- ret = get_user(reloc_type, (*reloc_user_ptr)+1);
- if (ret) {
- DRM_ERROR("Could not map relocation buffer.\n");
- goto out;
- }
-
- if (reloc_type != 0) {
- DRM_ERROR("Unsupported relocation type requested\n");
- ret = -EINVAL;
- goto out;
- }
-
- reloc_buf_size = (I915_RELOC_HEADER + (reloc_count * I915_RELOC0_STRIDE)) * sizeof(uint32_t);
- reloc_buf = kmalloc(reloc_buf_size, GFP_KERNEL);
- if (!reloc_buf) {
- DRM_ERROR("Out of memory for reloc buffer\n");
- ret = -ENOMEM;
- goto out;
- }
-
- if (copy_from_user(reloc_buf, *reloc_user_ptr, reloc_buf_size)) {
- ret = -EFAULT;
- goto out;
- }
-
- /* get next relocate buffer handle */
- *reloc_user_ptr = (uint32_t *)*(unsigned long *)&reloc_buf[2];
-
- reloc_stride = I915_RELOC0_STRIDE * sizeof(uint32_t); /* may be different for other types of relocs */
-
- DRM_DEBUG("num relocs is %d, next is %p\n", reloc_count, *reloc_user_ptr);
-
- for (i = 0; i < reloc_count; i++) {
- cur_offset = I915_RELOC_HEADER + (i * I915_RELOC0_STRIDE);
-
- ret = i915_apply_reloc(file_priv, num_buffers, buffers,
- relocatee, reloc_buf + cur_offset);
- if (ret)
- goto out;
- }
-
-out:
- if (reloc_buf)
- kfree(reloc_buf);
-
- if (relocatee->data_page) {
- drm_bo_kunmap(&relocatee->kmap);
- relocatee->data_page = NULL;
- }
-
- return ret;
-}
-
-static int i915_exec_reloc(struct drm_file *file_priv, drm_handle_t buf_handle,
- uint32_t __user *reloc_user_ptr,
- struct drm_i915_validate_buffer *buffers,
- uint32_t buf_count)
-{
- struct drm_device *dev = file_priv->head->dev;
- struct i915_relocatee_info relocatee;
- int ret = 0;
- int b;
-
- /*
- * Short circuit relocations when all previous
- * buffers offsets were correctly guessed by
- * the client
- */
- if (!DRM_DEBUG_RELOCATION) {
- for (b = 0; b < buf_count; b++)
- if (!buffers[b].presumed_offset_correct)
- break;
-
- if (b == buf_count)
- return 0;
- }
-
- memset(&relocatee, 0, sizeof(relocatee));
-
- mutex_lock(&dev->struct_mutex);
- relocatee.buf = drm_lookup_buffer_object(file_priv, buf_handle, 1);
- mutex_unlock(&dev->struct_mutex);
- if (!relocatee.buf) {
- DRM_DEBUG("relocatee buffer invalid %08x\n", buf_handle);
- ret = -EINVAL;
- goto out_err;
- }
-
- mutex_lock (&relocatee.buf->mutex);
- while (reloc_user_ptr) {
- ret = i915_process_relocs(file_priv, buf_handle, &reloc_user_ptr, &relocatee, buffers, buf_count);
- if (ret) {
- DRM_ERROR("process relocs failed\n");
- goto out_err1;
- }
- }
-
-out_err1:
- mutex_unlock (&relocatee.buf->mutex);
- drm_bo_usage_deref_unlocked(&relocatee.buf);
-out_err:
- return ret;
-}
-
-static int i915_check_presumed(struct drm_i915_op_arg *arg,
- struct drm_buffer_object *bo,
- uint32_t __user *data,
- int *presumed_ok)
-{
- struct drm_bo_op_req *req = &arg->d.req;
- uint32_t hint_offset;
- uint32_t hint = req->bo_req.hint;
-
- *presumed_ok = 0;
-
- if (!(hint & DRM_BO_HINT_PRESUMED_OFFSET))
- return 0;
- if (bo->offset == req->bo_req.presumed_offset) {
- *presumed_ok = 1;
- return 0;
- }
-
- /*
- * We need to turn off the HINT_PRESUMED_OFFSET for this buffer in
- * the user-space IOCTL argument list, since the buffer has moved,
- * we're about to apply relocations and we might subsequently
- * hit an -EAGAIN. In that case the argument list will be reused by
- * user-space, but the presumed offset is no longer valid.
- *
- * Needless to say, this is a bit ugly.
- */
-
- hint_offset = (uint32_t *)&req->bo_req.hint - (uint32_t *)arg;
- hint &= ~DRM_BO_HINT_PRESUMED_OFFSET;
- return __put_user(hint, data + hint_offset);
-}
-
-
-/*
- * Validate, add fence and relocate a block of bos from a userspace list
- */
-int i915_validate_buffer_list(struct drm_file *file_priv,
- unsigned int fence_class, uint64_t data,
- struct drm_i915_validate_buffer *buffers,
- uint32_t *num_buffers)
-{
- struct drm_i915_op_arg arg;
- struct drm_bo_op_req *req = &arg.d.req;
- int ret = 0;
- unsigned buf_count = 0;
- uint32_t buf_handle;
- uint32_t __user *reloc_user_ptr;
- struct drm_i915_validate_buffer *item = buffers;
-
- do {
- if (buf_count >= *num_buffers) {
- DRM_ERROR("Buffer count exceeded %d\n.", *num_buffers);
- ret = -EINVAL;
- goto out_err;
- }
- item = buffers + buf_count;
- item->buffer = NULL;
- item->presumed_offset_correct = 0;
-
- buffers[buf_count].buffer = NULL;
-
- if (copy_from_user(&arg, (void __user *)(unsigned long)data, sizeof(arg))) {
- ret = -EFAULT;
- goto out_err;
- }
-
- ret = 0;
- if (req->op != drm_bo_validate) {
- DRM_ERROR
- ("Buffer object operation wasn't \"validate\".\n");
- ret = -EINVAL;
- goto out_err;
- }
- item->ret = 0;
- item->data = (void __user *) (unsigned long) data;
-
- buf_handle = req->bo_req.handle;
- reloc_user_ptr = (uint32_t *)(unsigned long)arg.reloc_ptr;
-
- if (reloc_user_ptr) {
- ret = i915_exec_reloc(file_priv, buf_handle, reloc_user_ptr, buffers, buf_count);
- if (ret)
- goto out_err;
- DRM_MEMORYBARRIER();
- }
-
- ret = drm_bo_handle_validate(file_priv, req->bo_req.handle,
- req->bo_req.flags, req->bo_req.mask,
- req->bo_req.hint,
- req->bo_req.fence_class, 0,
- &item->rep,
- &item->buffer);
-
- if (ret) {
- DRM_ERROR("error on handle validate %d\n", ret);
- goto out_err;
- }
-
- buf_count++;
-
- ret = i915_check_presumed(&arg, item->buffer,
- (uint32_t __user *)
- (unsigned long) data,
- &item->presumed_offset_correct);
- if (ret)
- goto out_err;
-
- data = arg.next;
- } while (data != 0);
-out_err:
- *num_buffers = buf_count;
- item->ret = (ret != -EAGAIN) ? ret : 0;
- return ret;
-}
-
-
-/*
- * Remove all buffers from the unfenced list.
- * If the execbuffer operation was aborted, for example due to a signal,
- * this also make sure that buffers retain their original state and
- * fence pointers.
- * Copy back buffer information to user-space unless we were interrupted
- * by a signal. In which case the IOCTL must be rerun.
- */
-
-static int i915_handle_copyback(struct drm_device *dev,
- struct drm_i915_validate_buffer *buffers,
- unsigned int num_buffers, int ret)
-{
- int err = ret;
- int i;
- struct drm_i915_op_arg arg;
-
- if (ret)
- drm_putback_buffer_objects(dev);
-
- if (ret != -EAGAIN) {
- for (i = 0; i < num_buffers; ++i) {
- arg.handled = 1;
- arg.d.rep.ret = buffers->ret;
- arg.d.rep.bo_info = buffers->rep;
- if (__copy_to_user(buffers->data, &arg, sizeof(arg)))
- err = -EFAULT;
- buffers++;
- }
- }
-
- return err;
-}
-
-/*
- * Create a fence object, and if that fails, pretend that everything is
- * OK and just idle the GPU.
- */
-
-void i915_fence_or_sync(struct drm_file *file_priv,
- uint32_t fence_flags,
- struct drm_fence_arg *fence_arg,
- struct drm_fence_object **fence_p)
-{
- struct drm_device *dev = file_priv->head->dev;
- int ret;
- struct drm_fence_object *fence;
-
- ret = drm_fence_buffer_objects(dev, NULL, fence_flags,
- NULL, &fence);
-
- if (ret) {
-
- /*
- * Fence creation failed.
- * Fall back to synchronous operation and idle the engine.
- */
-
- (void) i915_emit_mi_flush(dev, MI_READ_FLUSH);
- (void) i915_quiescent(dev);
-
- if (!(fence_flags & DRM_FENCE_FLAG_NO_USER)) {
-
- /*
- * Communicate to user-space that
- * fence creation has failed and that
- * the engine is idle.
- */
-
- fence_arg->handle = ~0;
- fence_arg->error = ret;
- }
-
- drm_putback_buffer_objects(dev);
- if (fence_p)
- *fence_p = NULL;
- return;
- }
-
- if (!(fence_flags & DRM_FENCE_FLAG_NO_USER)) {
-
- ret = drm_fence_add_user_object(file_priv, fence,
- fence_flags &
- DRM_FENCE_FLAG_SHAREABLE);
- if (!ret)
- drm_fence_fill_arg(fence, fence_arg);
- else {
- /*
- * Fence user object creation failed.
- * We must idle the engine here as well, as user-
- * space expects a fence object to wait on. Since we
- * have a fence object we wait for it to signal
- * to indicate engine "sufficiently" idle.
- */
-
- (void) drm_fence_object_wait(fence, 0, 1,
- fence->type);
- drm_fence_usage_deref_unlocked(&fence);
- fence_arg->handle = ~0;
- fence_arg->error = ret;
- }
- }
-
- if (fence_p)
- *fence_p = fence;
- else if (fence)
- drm_fence_usage_deref_unlocked(&fence);
-}
-
-
-static int i915_execbuffer(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
- dev_priv->sarea_priv;
- struct drm_i915_execbuffer *exec_buf = data;
- struct drm_i915_batchbuffer *batch = &exec_buf->batch;
- struct drm_fence_arg *fence_arg = &exec_buf->fence_arg;
- int num_buffers;
- int ret;
- struct drm_i915_validate_buffer *buffers;
-
- if (!dev_priv->allow_batchbuffer) {
- DRM_ERROR("Batchbuffer ioctl disabled\n");
- return -EINVAL;
- }
-
-
- if (batch->num_cliprects && DRM_VERIFYAREA_READ(batch->cliprects,
- batch->num_cliprects *
- sizeof(struct drm_clip_rect)))
- return -EFAULT;
-
- if (exec_buf->num_buffers > dev_priv->max_validate_buffers)
- return -EINVAL;
-
-
- ret = drm_bo_read_lock(&dev->bm.bm_lock);
- if (ret)
- return ret;
-
- /*
- * The cmdbuf_mutex makes sure the validate-submit-fence
- * operation is atomic.
- */
-
- ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
- if (ret) {
- drm_bo_read_unlock(&dev->bm.bm_lock);
- return -EAGAIN;
- }
-
- num_buffers = exec_buf->num_buffers;
-
- buffers = drm_calloc(num_buffers, sizeof(struct drm_i915_validate_buffer), DRM_MEM_DRIVER);
- if (!buffers) {
- drm_bo_read_unlock(&dev->bm.bm_lock);
- mutex_unlock(&dev_priv->cmdbuf_mutex);
- return -ENOMEM;
- }
-
- /* validate buffer list + fixup relocations */
- ret = i915_validate_buffer_list(file_priv, 0, exec_buf->ops_list,
- buffers, &num_buffers);
- if (ret)
- goto out_err0;
-
- /* make sure all previous memory operations have passed */
- DRM_MEMORYBARRIER();
- drm_agp_chipset_flush(dev);
-
- /* submit buffer */
- batch->start = buffers[num_buffers-1].buffer->offset;
-
- DRM_DEBUG("i915 exec batchbuffer, start %x used %d cliprects %d\n",
- batch->start, batch->used, batch->num_cliprects);
-
- ret = i915_dispatch_batchbuffer(dev, batch);
- if (ret)
- goto out_err0;
-
- if (sarea_priv)
- sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
-
- i915_fence_or_sync(file_priv, fence_arg->flags, fence_arg, NULL);
-
-out_err0:
-
- /* handle errors */
- ret = i915_handle_copyback(dev, buffers, num_buffers, ret);
- mutex_lock(&dev->struct_mutex);
- i915_dereference_buffers_locked(buffers, num_buffers);
- mutex_unlock(&dev->struct_mutex);
-
- drm_free(buffers, (exec_buf->num_buffers * sizeof(struct drm_buffer_object *)), DRM_MEM_DRIVER);
-
- mutex_unlock(&dev_priv->cmdbuf_mutex);
- drm_bo_read_unlock(&dev->bm.bm_lock);
- return ret;
-}
-#endif
static int i915_do_cleanup_pageflip(struct drm_device * dev)
{
diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h
index 4d3ac0a5..4811ee87 100644
--- a/shared-core/i915_drv.h
+++ b/shared-core/i915_drv.h
@@ -263,6 +263,9 @@ extern void i915_emit_breadcrumb(struct drm_device *dev);
extern void i915_dispatch_flip(struct drm_device * dev, int pipes, int sync);
extern int i915_emit_mi_flush(struct drm_device *dev, uint32_t flush);
extern int i915_driver_firstopen(struct drm_device *dev);
+extern int i915_dispatch_batchbuffer(struct drm_device * dev,
+ drm_i915_batchbuffer_t * batch);
+extern int i915_quiescent(struct drm_device *dev);
/* i915_irq.c */
extern int i915_irq_emit(struct drm_device *dev, void *data,
@@ -319,6 +322,10 @@ extern uint64_t i915_evict_flags(struct drm_buffer_object *bo);
extern int i915_move(struct drm_buffer_object *bo, int evict,
int no_wait, struct drm_bo_mem_reg *new_mem);
void i915_flush_ttm(struct drm_ttm *ttm);
+/* i915_execbuf.c */
+int i915_execbuffer(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+
#endif
#ifdef __linux__
@@ -414,6 +421,7 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
#define GFX_OP_USER_INTERRUPT ((0<<29)|(2<<23))
#define GFX_OP_BREAKPOINT_INTERRUPT ((0<<29)|(1<<23))
#define CMD_REPORT_HEAD (7<<23)
+#define CMD_STORE_DWORD_IMM ((0x20<<23) | (0x1 << 22) | 0x1)
#define CMD_STORE_DWORD_IDX ((0x21<<23) | 0x1)
#define CMD_OP_BATCH_BUFFER ((0x0<<29)|(0x30<<23)|0x1)