diff options
author | Eric Anholt <eric@anholt.net> | 2007-09-27 10:16:04 -0700 |
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committer | Eric Anholt <eric@anholt.net> | 2007-09-27 11:15:51 -0700 |
commit | b2f1aa2389473ed09170713301b042661d70a48e (patch) | |
tree | bc2ebb05bac735741accb83983c83d5e943bb323 /src/mesa/drivers/dri/i915/intel_batchbuffer.c | |
parent | 38c30a81844214b030c9c637f9cf97bd2bf19cde (diff) |
WIP 965 conversion to dri_bufmgr.
Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_batchbuffer.c')
-rw-r--r-- | src/mesa/drivers/dri/i915/intel_batchbuffer.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_batchbuffer.c b/src/mesa/drivers/dri/i915/intel_batchbuffer.c deleted file mode 100644 index 8ee48b5a68..0000000000 --- a/src/mesa/drivers/dri/i915/intel_batchbuffer.c +++ /dev/null @@ -1,331 +0,0 @@ -/************************************************************************** - * - * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sub license, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. - * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR - * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, - * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE - * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - **************************************************************************/ - -#include "intel_batchbuffer.h" -#include "intel_ioctl.h" -#include "intel_decode.h" -#include "i915_debug.h" - -/* Relocations in kernel space: - * - pass dma buffer seperately - * - memory manager knows how to patch - * - pass list of dependent buffers - * - pass relocation list - * - * Either: - * - get back an offset for buffer to fire - * - memory manager knows how to fire buffer - * - * Really want the buffer to be AGP and pinned. - * - */ - -/* Cliprect fence: The highest fence protecting a dma buffer - * containing explicit cliprect information. Like the old drawable - * lock but irq-driven. X server must wait for this fence to expire - * before changing cliprects [and then doing sw rendering?]. For - * other dma buffers, the scheduler will grab current cliprect info - * and mix into buffer. X server must hold the lock while changing - * cliprects??? Make per-drawable. Need cliprects in shared memory - * -- beats storing them with every cmd buffer in the queue. - * - * ==> X server must wait for this fence to expire before touching the - * framebuffer with new cliprects. - * - * ==> Cliprect-dependent buffers associated with a - * cliprect-timestamp. All of the buffers associated with a timestamp - * must go to hardware before any buffer with a newer timestamp. - * - * ==> Dma should be queued per-drawable for correct X/GL - * synchronization. Or can fences be used for this? - * - * Applies to: Blit operations, metaops, X server operations -- X - * server automatically waits on its own dma to complete before - * modifying cliprects ??? - */ - -void -intel_batchbuffer_reset(struct intel_batchbuffer *batch) -{ - struct intel_context *intel = batch->intel; - - if (batch->buf != NULL) { - dri_bo_unreference(batch->buf); - batch->buf = NULL; - } - - batch->buf = dri_bo_alloc(intel->intelScreen->bufmgr, "batchbuffer", - intel->intelScreen->maxBatchSize, 4096, - DRM_BO_FLAG_MEM_TT); - dri_bo_map(batch->buf, GL_TRUE); - batch->map = batch->buf->virtual; - batch->size = intel->intelScreen->maxBatchSize; - batch->ptr = batch->map; -} - -struct intel_batchbuffer * -intel_batchbuffer_alloc(struct intel_context *intel) -{ - struct intel_batchbuffer *batch = calloc(sizeof(*batch), 1); - - batch->intel = intel; - batch->last_fence = NULL; - intel_batchbuffer_reset(batch); - - return batch; -} - -void -intel_batchbuffer_free(struct intel_batchbuffer *batch) -{ - if (batch->last_fence) { - dri_fence_wait(batch->last_fence); - dri_fence_unreference(batch->last_fence); - batch->last_fence = NULL; - } - if (batch->map) { - dri_bo_unmap(batch->buf); - batch->map = NULL; - } - dri_bo_unreference(batch->buf); - batch->buf = NULL; - free(batch); -} - -static int -relocation_sort(const void *a_in, const void *b_in) { - const struct buffer_reloc *a = a_in, *b = b_in; - - return (intptr_t)a->buf < (intptr_t)b->buf ? -1 : 1; -} - - -/* TODO: Push this whole function into bufmgr. - */ -static void -do_flush_locked(struct intel_batchbuffer *batch, - GLuint used, - GLboolean ignore_cliprects, GLboolean allow_unlock) -{ - GLuint *ptr; - GLuint i; - struct intel_context *intel = batch->intel; - dri_fence *fo; - GLboolean performed_rendering = GL_FALSE; - - assert(batch->buf->virtual != NULL); - ptr = batch->buf->virtual; - - /* Sort our relocation list in terms of referenced buffer pointer. - * This lets us uniquely validate the buffers with the sum of all the flags, - * while avoiding O(n^2) on number of relocations. - */ - qsort(batch->reloc, batch->nr_relocs, sizeof(batch->reloc[0]), - relocation_sort); - - /* Perform the necessary validations of buffers, and enter the relocations - * in the batchbuffer. - */ - for (i = 0; i < batch->nr_relocs; i++) { - struct buffer_reloc *r = &batch->reloc[i]; - - if (r->validate_flags & DRM_BO_FLAG_WRITE) - performed_rendering = GL_TRUE; - - /* If this is the first time we've seen this buffer in the relocation - * list, figure out our flags and validate it. - */ - if (i == 0 || batch->reloc[i - 1].buf != r->buf) { - uint32_t validate_flags; - int j, ret; - - /* Accumulate the flags we need for validating this buffer. */ - validate_flags = r->validate_flags; - for (j = i + 1; j < batch->nr_relocs; j++) { - if (batch->reloc[j].buf != r->buf) - break; - validate_flags |= batch->reloc[j].validate_flags; - } - - /* Validate. If we fail, fence to clear the unfenced list and bail - * out. - */ - ret = dri_bo_validate(r->buf, validate_flags); - if (ret != 0) { - dri_bo_unmap(batch->buf); - fo = dri_fence_validated(intel->intelScreen->bufmgr, - "batchbuffer failure fence", GL_TRUE); - dri_fence_unreference(fo); - goto done; - } - } - ptr[r->offset / 4] = r->buf->offset + r->delta; - dri_bo_unreference(r->buf); - } - - dri_bo_unmap(batch->buf); - batch->map = NULL; - batch->ptr = NULL; - - dri_bo_validate(batch->buf, DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_EXE); - - batch->list_count = 0; - batch->nr_relocs = 0; - batch->flags = 0; - - /* Throw away non-effective packets. Won't work once we have - * hardware contexts which would preserve statechanges beyond a - * single buffer. - */ - - if (!(intel->numClipRects == 0 && !ignore_cliprects)) { - intel_batch_ioctl(batch->intel, - batch->buf->offset, - used, ignore_cliprects, allow_unlock); - } - - /* Associate a fence with the validated buffers, and note that we included - * a flush at the end. - */ - fo = dri_fence_validated(intel->intelScreen->bufmgr, - "Batch fence", GL_TRUE); - - if (performed_rendering) { - dri_fence_unreference(batch->last_fence); - batch->last_fence = fo; - } else { - /* If we didn't validate any buffers for writing by the card, we don't - * need to track the fence for glFinish(). - */ - dri_fence_unreference(fo); - } - - if (intel->numClipRects == 0 && !ignore_cliprects) { - if (allow_unlock) { - /* If we are not doing any actual user-visible rendering, - * do a sched_yield to keep the app from pegging the cpu while - * achieving nothing. - */ - UNLOCK_HARDWARE(intel); - sched_yield(); - LOCK_HARDWARE(intel); - } - intel->vtbl.lost_hardware(intel); - } - -done: - if (INTEL_DEBUG & DEBUG_BATCH) { - dri_bo_map(batch->buf, GL_FALSE); - intel_decode(ptr, used / 4, batch->buf->offset); - dri_bo_unmap(batch->buf); - } -} - - -void -intel_batchbuffer_flush(struct intel_batchbuffer *batch) -{ - struct intel_context *intel = batch->intel; - GLuint used = batch->ptr - batch->map; - GLboolean was_locked = intel->locked; - - if (used == 0) - return; - - /* Add the MI_BATCH_BUFFER_END. Always add an MI_FLUSH - this is a - * performance drain that we would like to avoid. - */ - if (used & 4) { - ((int *) batch->ptr)[0] = intel->vtbl.flush_cmd(); - ((int *) batch->ptr)[1] = 0; - ((int *) batch->ptr)[2] = MI_BATCH_BUFFER_END; - used += 12; - } - else { - ((int *) batch->ptr)[0] = intel->vtbl.flush_cmd(); - ((int *) batch->ptr)[1] = MI_BATCH_BUFFER_END; - used += 8; - } - - /* TODO: Just pass the relocation list and dma buffer up to the - * kernel. - */ - if (!was_locked) - LOCK_HARDWARE(intel); - - do_flush_locked(batch, used, !(batch->flags & INTEL_BATCH_CLIPRECTS), - GL_FALSE); - - if (!was_locked) - UNLOCK_HARDWARE(intel); - - /* Reset the buffer: - */ - intel_batchbuffer_reset(batch); -} - -void -intel_batchbuffer_finish(struct intel_batchbuffer *batch) -{ - intel_batchbuffer_flush(batch); - if (batch->last_fence != NULL) - dri_fence_wait(batch->last_fence); -} - - -/* This is the only way buffers get added to the validate list. - */ -GLboolean -intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch, - dri_bo *buffer, - GLuint flags, GLuint delta) -{ - struct buffer_reloc *r = &batch->reloc[batch->nr_relocs++]; - - assert(batch->nr_relocs <= MAX_RELOCS); - - dri_bo_reference(buffer); - r->buf = buffer; - r->offset = batch->ptr - batch->map; - r->delta = delta; - r->validate_flags = flags; - - batch->ptr += 4; - return GL_TRUE; -} - - - -void -intel_batchbuffer_data(struct intel_batchbuffer *batch, - const void *data, GLuint bytes, GLuint flags) -{ - assert((bytes & 3) == 0); - intel_batchbuffer_require_space(batch, bytes, flags); - __memcpy(batch->ptr, data, bytes); - batch->ptr += bytes; -} |