1 /* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 /* Really want an OS-independent resettable timer. Would like to have
35 * this loop run for (eg) 3 sec, but have the timer reset every time
36 * the head pointer changes, so that EBUSY only happens if the ring
37 * actually stalls for (eg) 3 seconds.
39 int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
41 drm_i915_private_t *dev_priv = dev->dev_private;
42 drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
43 u32 last_head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
46 for (i = 0; i < 10000; i++) {
47 ring->head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
48 ring->space = ring->head - (ring->tail + 8);
50 ring->space += ring->Size;
54 dev_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
56 if (ring->head != last_head)
59 last_head = ring->head;
66 void i915_kernel_lost_context(struct drm_device * dev)
68 drm_i915_private_t *dev_priv = dev->dev_private;
69 drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
71 ring->head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
72 ring->tail = I915_READ(LP_RING + RING_TAIL) & TAIL_ADDR;
73 ring->space = ring->head - (ring->tail + 8);
75 ring->space += ring->Size;
77 if (ring->head == ring->tail)
78 dev_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
81 static int i915_dma_cleanup(struct drm_device * dev)
83 drm_i915_private_t *dev_priv = dev->dev_private;
84 /* Make sure interrupts are disabled here because the uninstall ioctl
85 * may not have been called from userspace and after dev_private
86 * is freed, it's too late.
89 drm_irq_uninstall(dev);
91 if (dev_priv->ring.virtual_start) {
92 drm_core_ioremapfree(&dev_priv->ring.map, dev);
93 dev_priv->ring.virtual_start = 0;
94 dev_priv->ring.map.handle = 0;
95 dev_priv->ring.map.size = 0;
98 if (dev_priv->status_page_dmah) {
99 drm_pci_free(dev, dev_priv->status_page_dmah);
100 dev_priv->status_page_dmah = NULL;
101 /* Need to rewrite hardware status page */
102 I915_WRITE(0x02080, 0x1ffff000);
105 if (dev_priv->status_gfx_addr) {
106 dev_priv->status_gfx_addr = 0;
107 drm_core_ioremapfree(&dev_priv->hws_map, dev);
108 I915_WRITE(0x02080, 0x1ffff000);
114 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
116 drm_i915_private_t *dev_priv = dev->dev_private;
118 dev_priv->sarea = drm_getsarea(dev);
119 if (!dev_priv->sarea) {
120 DRM_ERROR("can not find sarea!\n");
121 i915_dma_cleanup(dev);
125 dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
126 if (!dev_priv->mmio_map) {
127 i915_dma_cleanup(dev);
128 DRM_ERROR("can not find mmio map!\n");
132 #ifdef I915_HAVE_BUFFER
133 dev_priv->max_validate_buffers = I915_MAX_VALIDATE_BUFFERS;
136 dev_priv->sarea_priv = (drm_i915_sarea_t *)
137 ((u8 *) dev_priv->sarea->handle + init->sarea_priv_offset);
139 dev_priv->ring.Start = init->ring_start;
140 dev_priv->ring.End = init->ring_end;
141 dev_priv->ring.Size = init->ring_size;
142 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
144 dev_priv->ring.map.offset = init->ring_start;
145 dev_priv->ring.map.size = init->ring_size;
146 dev_priv->ring.map.type = 0;
147 dev_priv->ring.map.flags = 0;
148 dev_priv->ring.map.mtrr = 0;
150 drm_core_ioremap(&dev_priv->ring.map, dev);
152 if (dev_priv->ring.map.handle == NULL) {
153 i915_dma_cleanup(dev);
154 DRM_ERROR("can not ioremap virtual address for"
159 dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
161 dev_priv->cpp = init->cpp;
162 dev_priv->sarea_priv->pf_current_page = 0;
164 /* We are using separate values as placeholders for mechanisms for
165 * private backbuffer/depthbuffer usage.
167 dev_priv->use_mi_batchbuffer_start = 0;
169 /* Allow hardware batchbuffers unless told otherwise.
171 dev_priv->allow_batchbuffer = 1;
173 /* Enable vblank on pipe A for older X servers
175 dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A;
177 /* Program Hardware Status Page */
179 dev_priv->status_page_dmah =
180 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
182 if (!dev_priv->status_page_dmah) {
183 i915_dma_cleanup(dev);
184 DRM_ERROR("Can not allocate hardware status page\n");
187 dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
188 dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
190 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
192 I915_WRITE(0x02080, dev_priv->dma_status_page);
194 DRM_DEBUG("Enabled hardware status page\n");
195 mutex_init(&dev_priv->cmdbuf_mutex);
199 static int i915_dma_resume(struct drm_device * dev)
201 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
203 DRM_DEBUG("%s\n", __FUNCTION__);
205 if (!dev_priv->sarea) {
206 DRM_ERROR("can not find sarea!\n");
210 if (!dev_priv->mmio_map) {
211 DRM_ERROR("can not find mmio map!\n");
215 if (dev_priv->ring.map.handle == NULL) {
216 DRM_ERROR("can not ioremap virtual address for"
221 /* Program Hardware Status Page */
222 if (!dev_priv->hw_status_page) {
223 DRM_ERROR("Can not find hardware status page\n");
226 DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
228 if (dev_priv->status_gfx_addr != 0)
229 I915_WRITE(0x02080, dev_priv->status_gfx_addr);
231 I915_WRITE(0x02080, dev_priv->dma_status_page);
232 DRM_DEBUG("Enabled hardware status page\n");
237 static int i915_dma_init(struct drm_device *dev, void *data,
238 struct drm_file *file_priv)
240 drm_i915_init_t *init = data;
243 switch (init->func) {
245 retcode = i915_initialize(dev, init);
247 case I915_CLEANUP_DMA:
248 retcode = i915_dma_cleanup(dev);
250 case I915_RESUME_DMA:
251 retcode = i915_dma_resume(dev);
261 /* Implement basically the same security restrictions as hardware does
262 * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
264 * Most of the calculations below involve calculating the size of a
265 * particular instruction. It's important to get the size right as
266 * that tells us where the next instruction to check is. Any illegal
267 * instruction detected will be given a size of zero, which is a
268 * signal to abort the rest of the buffer.
270 static int do_validate_cmd(int cmd)
272 switch (((cmd >> 29) & 0x7)) {
274 switch ((cmd >> 23) & 0x3f) {
276 return 1; /* MI_NOOP */
278 return 1; /* MI_FLUSH */
280 return 0; /* disallow everything else */
284 return 0; /* reserved */
286 return (cmd & 0xff) + 2; /* 2d commands */
288 if (((cmd >> 24) & 0x1f) <= 0x18)
291 switch ((cmd >> 24) & 0x1f) {
295 switch ((cmd >> 16) & 0xff) {
297 return (cmd & 0x1f) + 2;
299 return (cmd & 0xf) + 2;
301 return (cmd & 0xffff) + 2;
305 return (cmd & 0xffff) + 1;
309 if ((cmd & (1 << 23)) == 0) /* inline vertices */
310 return (cmd & 0x1ffff) + 2;
311 else if (cmd & (1 << 17)) /* indirect random */
312 if ((cmd & 0xffff) == 0)
313 return 0; /* unknown length, too hard */
315 return (((cmd & 0xffff) + 1) / 2) + 1;
317 return 2; /* indirect sequential */
328 static int validate_cmd(int cmd)
330 int ret = do_validate_cmd(cmd);
332 /* printk("validate_cmd( %x ): %d\n", cmd, ret); */
337 static int i915_emit_cmds(struct drm_device * dev, int __user * buffer,
340 drm_i915_private_t *dev_priv = dev->dev_private;
344 if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8)
347 BEGIN_LP_RING((dwords+1)&~1);
349 for (i = 0; i < dwords;) {
352 if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], sizeof(cmd)))
355 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
361 if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i],
377 static int i915_emit_box(struct drm_device * dev,
378 struct drm_clip_rect __user * boxes,
379 int i, int DR1, int DR4)
381 drm_i915_private_t *dev_priv = dev->dev_private;
382 struct drm_clip_rect box;
385 if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) {
389 if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
390 DRM_ERROR("Bad box %d,%d..%d,%d\n",
391 box.x1, box.y1, box.x2, box.y2);
397 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
398 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
399 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
404 OUT_RING(GFX_OP_DRAWRECT_INFO);
406 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
407 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
416 /* XXX: Emitting the counter should really be moved to part of the IRQ
417 * emit. For now, do it in both places:
420 void i915_emit_breadcrumb(struct drm_device *dev)
422 drm_i915_private_t *dev_priv = dev->dev_private;
425 if (++dev_priv->counter > BREADCRUMB_MASK) {
426 dev_priv->counter = 1;
427 DRM_DEBUG("Breadcrumb counter wrapped around\n");
430 dev_priv->sarea_priv->last_enqueue = dev_priv->counter;
433 OUT_RING(CMD_STORE_DWORD_IDX);
435 OUT_RING(dev_priv->counter);
441 int i915_emit_mi_flush(struct drm_device *dev, uint32_t flush)
443 drm_i915_private_t *dev_priv = dev->dev_private;
444 uint32_t flush_cmd = CMD_MI_FLUSH;
449 i915_kernel_lost_context(dev);
462 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
463 drm_i915_cmdbuffer_t * cmd)
465 #ifdef I915_HAVE_FENCE
466 drm_i915_private_t *dev_priv = dev->dev_private;
468 int nbox = cmd->num_cliprects;
469 int i = 0, count, ret;
472 DRM_ERROR("alignment\n");
476 i915_kernel_lost_context(dev);
478 count = nbox ? nbox : 1;
480 for (i = 0; i < count; i++) {
482 ret = i915_emit_box(dev, cmd->cliprects, i,
488 ret = i915_emit_cmds(dev, (int __user *)cmd->buf, cmd->sz / 4);
493 i915_emit_breadcrumb( dev );
494 #ifdef I915_HAVE_FENCE
495 drm_fence_flush_old(dev, 0, dev_priv->counter);
500 static int i915_dispatch_batchbuffer(struct drm_device * dev,
501 drm_i915_batchbuffer_t * batch)
503 drm_i915_private_t *dev_priv = dev->dev_private;
504 struct drm_clip_rect __user *boxes = batch->cliprects;
505 int nbox = batch->num_cliprects;
509 if ((batch->start | batch->used) & 0x7) {
510 DRM_ERROR("alignment\n");
514 i915_kernel_lost_context(dev);
516 count = nbox ? nbox : 1;
518 for (i = 0; i < count; i++) {
520 int ret = i915_emit_box(dev, boxes, i,
521 batch->DR1, batch->DR4);
526 if (dev_priv->use_mi_batchbuffer_start) {
529 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
530 OUT_RING(batch->start);
532 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
533 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
539 OUT_RING(MI_BATCH_BUFFER);
540 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
541 OUT_RING(batch->start + batch->used - 4);
547 i915_emit_breadcrumb( dev );
548 #ifdef I915_HAVE_FENCE
549 drm_fence_flush_old(dev, 0, dev_priv->counter);
554 static void i915_do_dispatch_flip(struct drm_device * dev, int plane, int sync)
556 drm_i915_private_t *dev_priv = dev->dev_private;
557 u32 num_pages, current_page, next_page, dspbase;
558 int shift = 2 * plane, x, y;
561 /* Calculate display base offset */
562 num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2;
563 current_page = (dev_priv->sarea_priv->pf_current_page >> shift) & 0x3;
564 next_page = (current_page + 1) % num_pages;
569 dspbase = dev_priv->sarea_priv->front_offset;
572 dspbase = dev_priv->sarea_priv->back_offset;
575 dspbase = dev_priv->sarea_priv->third_offset;
580 x = dev_priv->sarea_priv->planeA_x;
581 y = dev_priv->sarea_priv->planeA_y;
583 x = dev_priv->sarea_priv->planeB_x;
584 y = dev_priv->sarea_priv->planeB_y;
587 dspbase += (y * dev_priv->sarea_priv->pitch + x) * dev_priv->cpp;
589 DRM_DEBUG("plane=%d current_page=%d dspbase=0x%x\n", plane, current_page,
594 (MI_WAIT_FOR_EVENT | (plane ? MI_WAIT_FOR_PLANE_B_FLIP :
595 MI_WAIT_FOR_PLANE_A_FLIP)));
596 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | (sync ? 0 : ASYNC_FLIP) |
597 (plane ? DISPLAY_PLANE_B : DISPLAY_PLANE_A));
598 OUT_RING(dev_priv->sarea_priv->pitch * dev_priv->cpp);
602 dev_priv->sarea_priv->pf_current_page &= ~(0x3 << shift);
603 dev_priv->sarea_priv->pf_current_page |= next_page << shift;
606 void i915_dispatch_flip(struct drm_device * dev, int planes, int sync)
608 drm_i915_private_t *dev_priv = dev->dev_private;
611 DRM_DEBUG("%s: planes=0x%x pfCurrentPage=%d\n",
613 planes, dev_priv->sarea_priv->pf_current_page);
615 i915_emit_mi_flush(dev, MI_READ_FLUSH | MI_EXE_FLUSH);
617 for (i = 0; i < 2; i++)
618 if (planes & (1 << i))
619 i915_do_dispatch_flip(dev, i, sync);
621 i915_emit_breadcrumb(dev);
622 #ifdef I915_HAVE_FENCE
624 drm_fence_flush_old(dev, 0, dev_priv->counter);
628 static int i915_quiescent(struct drm_device * dev)
630 drm_i915_private_t *dev_priv = dev->dev_private;
632 i915_kernel_lost_context(dev);
633 return i915_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__);
636 static int i915_flush_ioctl(struct drm_device *dev, void *data,
637 struct drm_file *file_priv)
640 LOCK_TEST_WITH_RETURN(dev, file_priv);
642 return i915_quiescent(dev);
645 static int i915_batchbuffer(struct drm_device *dev, void *data,
646 struct drm_file *file_priv)
648 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
649 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
650 dev_priv->sarea_priv;
651 drm_i915_batchbuffer_t *batch = data;
654 if (!dev_priv->allow_batchbuffer) {
655 DRM_ERROR("Batchbuffer ioctl disabled\n");
659 DRM_DEBUG("i915 batchbuffer, start %x used %d cliprects %d\n",
660 batch->start, batch->used, batch->num_cliprects);
662 LOCK_TEST_WITH_RETURN(dev, file_priv);
664 if (batch->num_cliprects && DRM_VERIFYAREA_READ(batch->cliprects,
665 batch->num_cliprects *
666 sizeof(struct drm_clip_rect)))
669 ret = i915_dispatch_batchbuffer(dev, batch);
671 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
675 static int i915_cmdbuffer(struct drm_device *dev, void *data,
676 struct drm_file *file_priv)
678 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
679 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
680 dev_priv->sarea_priv;
681 drm_i915_cmdbuffer_t *cmdbuf = data;
684 DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
685 cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
687 LOCK_TEST_WITH_RETURN(dev, file_priv);
689 if (cmdbuf->num_cliprects &&
690 DRM_VERIFYAREA_READ(cmdbuf->cliprects,
691 cmdbuf->num_cliprects *
692 sizeof(struct drm_clip_rect))) {
693 DRM_ERROR("Fault accessing cliprects\n");
697 ret = i915_dispatch_cmdbuffer(dev, cmdbuf);
699 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
703 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
707 #ifdef I915_HAVE_BUFFER
708 struct i915_relocatee_info {
709 struct drm_buffer_object *buf;
710 unsigned long offset;
712 unsigned page_offset;
713 struct drm_bo_kmap_obj kmap;
717 static void i915_dereference_buffers_locked(struct drm_buffer_object **buffers,
718 unsigned num_buffers)
720 while (num_buffers--)
721 drm_bo_usage_deref_locked(&buffers[num_buffers]);
724 int i915_apply_reloc(struct drm_file *file_priv, int num_buffers,
725 struct drm_buffer_object **buffers,
726 struct i915_relocatee_info *relocatee,
730 unsigned long new_cmd_offset;
734 if (reloc[2] >= num_buffers) {
735 DRM_ERROR("Illegal relocation buffer %08X\n", reloc[2]);
739 new_cmd_offset = reloc[0];
740 if (!relocatee->data_page ||
741 !drm_bo_same_page(relocatee->offset, new_cmd_offset)) {
742 drm_bo_kunmap(&relocatee->kmap);
743 relocatee->offset = new_cmd_offset;
744 ret = drm_bo_kmap(relocatee->buf, new_cmd_offset >> PAGE_SHIFT,
745 1, &relocatee->kmap);
747 DRM_ERROR("Could not map command buffer to apply relocs\n %08lx", new_cmd_offset);
751 relocatee->data_page = drm_bmo_virtual(&relocatee->kmap,
752 &relocatee->is_iomem);
753 relocatee->page_offset = (relocatee->offset & PAGE_MASK);
756 val = buffers[reloc[2]]->offset;
757 index = (reloc[0] - relocatee->page_offset) >> 2;
759 /* add in validate */
760 val = val + reloc[1];
762 relocatee->data_page[index] = val;
766 int i915_process_relocs(struct drm_file *file_priv,
768 uint32_t *reloc_buf_handle,
769 struct i915_relocatee_info *relocatee,
770 struct drm_buffer_object **buffers,
771 uint32_t num_buffers)
773 struct drm_device *dev = file_priv->head->dev;
774 struct drm_buffer_object *reloc_list_object;
775 uint32_t cur_handle = *reloc_buf_handle;
776 uint32_t *reloc_page;
777 int ret, reloc_is_iomem, reloc_stride;
778 uint32_t num_relocs, reloc_offset, reloc_end, reloc_page_offset, next_offset, cur_offset;
779 struct drm_bo_kmap_obj reloc_kmap;
781 memset(&reloc_kmap, 0, sizeof(reloc_kmap));
783 mutex_lock(&dev->struct_mutex);
784 reloc_list_object = drm_lookup_buffer_object(file_priv, cur_handle, 1);
785 mutex_unlock(&dev->struct_mutex);
786 if (!reloc_list_object)
789 ret = drm_bo_kmap(reloc_list_object, 0, 1, &reloc_kmap);
791 DRM_ERROR("Could not map relocation buffer.\n");
795 reloc_page = drm_bmo_virtual(&reloc_kmap, &reloc_is_iomem);
796 num_relocs = reloc_page[0] & 0xffff;
798 if ((reloc_page[0] >> 16) & 0xffff) {
799 DRM_ERROR("Unsupported relocation type requested\n");
803 /* get next relocate buffer handle */
804 *reloc_buf_handle = reloc_page[1];
805 reloc_stride = I915_RELOC0_STRIDE * sizeof(uint32_t); /* may be different for other types of relocs */
807 DRM_DEBUG("num relocs is %d, next is %08X\n", num_relocs, reloc_page[1]);
809 reloc_page_offset = 0;
810 reloc_offset = I915_RELOC_HEADER * sizeof(uint32_t);
811 reloc_end = reloc_offset + (num_relocs * reloc_stride);
814 next_offset = drm_bo_offset_end(reloc_offset, reloc_end);
817 cur_offset = ((reloc_offset + reloc_page_offset) & ~PAGE_MASK) / sizeof(uint32_t);
818 ret = i915_apply_reloc(file_priv, num_buffers,
819 buffers, relocatee, &reloc_page[cur_offset]);
823 reloc_offset += reloc_stride;
824 } while (reloc_offset < next_offset);
826 drm_bo_kunmap(&reloc_kmap);
828 reloc_offset = next_offset;
829 if (reloc_offset != reloc_end) {
830 ret = drm_bo_kmap(reloc_list_object, reloc_offset >> PAGE_SHIFT, 1, &reloc_kmap);
832 DRM_ERROR("Could not map relocation buffer.\n");
836 reloc_page = drm_bmo_virtual(&reloc_kmap, &reloc_is_iomem);
837 reloc_page_offset = reloc_offset & ~PAGE_MASK;
840 } while (reloc_offset != reloc_end);
842 drm_bo_kunmap(&relocatee->kmap);
843 relocatee->data_page = NULL;
845 drm_bo_kunmap(&reloc_kmap);
847 mutex_lock(&dev->struct_mutex);
848 drm_bo_usage_deref_locked(&reloc_list_object);
849 mutex_unlock(&dev->struct_mutex);
854 static int i915_exec_reloc(struct drm_file *file_priv, drm_handle_t buf_handle,
855 drm_handle_t buf_reloc_handle,
856 struct drm_buffer_object **buffers,
859 struct drm_device *dev = file_priv->head->dev;
860 struct i915_relocatee_info relocatee;
863 memset(&relocatee, 0, sizeof(relocatee));
865 mutex_lock(&dev->struct_mutex);
866 relocatee.buf = drm_lookup_buffer_object(file_priv, buf_handle, 1);
867 mutex_unlock(&dev->struct_mutex);
868 if (!relocatee.buf) {
869 DRM_DEBUG("relocatee buffer invalid %08x\n", buf_handle);
874 while (buf_reloc_handle) {
875 ret = i915_process_relocs(file_priv, buf_handle, &buf_reloc_handle, &relocatee, buffers, buf_count);
877 DRM_ERROR("process relocs failed\n");
882 mutex_lock(&dev->struct_mutex);
883 drm_bo_usage_deref_locked(&relocatee.buf);
884 mutex_unlock(&dev->struct_mutex);
891 * Validate, add fence and relocate a block of bos from a userspace list
893 int i915_validate_buffer_list(struct drm_file *file_priv,
894 unsigned int fence_class, uint64_t data,
895 struct drm_buffer_object **buffers,
896 uint32_t *num_buffers)
898 struct drm_i915_op_arg arg;
899 struct drm_bo_op_req *req = &arg.d.req;
900 struct drm_bo_arg_rep rep;
901 unsigned long next = 0;
903 unsigned buf_count = 0;
904 struct drm_device *dev = file_priv->head->dev;
905 uint32_t buf_reloc_handle, buf_handle;
909 if (buf_count >= *num_buffers) {
910 DRM_ERROR("Buffer count exceeded %d\n.", *num_buffers);
915 buffers[buf_count] = NULL;
917 if (copy_from_user(&arg, (void __user *)(unsigned)data, sizeof(arg))) {
924 mutex_lock(&dev->struct_mutex);
925 buffers[buf_count] = drm_lookup_buffer_object(file_priv, req->arg_handle, 1);
926 mutex_unlock(&dev->struct_mutex);
932 if (req->op != drm_bo_validate) {
934 ("Buffer object operation wasn't \"validate\".\n");
939 buf_handle = req->bo_req.handle;
940 buf_reloc_handle = arg.reloc_handle;
942 if (buf_reloc_handle) {
943 ret = i915_exec_reloc(file_priv, buf_handle, buf_reloc_handle, buffers, buf_count);
949 rep.ret = drm_bo_handle_validate(file_priv, req->bo_req.handle,
950 req->bo_req.fence_class,
956 &buffers[buf_count]);
959 DRM_ERROR("error on handle validate %d\n", rep.ret);
968 if (copy_to_user((void __user *)(unsigned)data, &arg, sizeof(arg)))
975 *num_buffers = buf_count;
978 mutex_lock(&dev->struct_mutex);
979 i915_dereference_buffers_locked(buffers, buf_count);
980 mutex_unlock(&dev->struct_mutex);
982 return (ret) ? ret : rep.ret;
985 static int i915_execbuffer(struct drm_device *dev, void *data,
986 struct drm_file *file_priv)
988 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
989 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
990 dev_priv->sarea_priv;
991 struct drm_i915_execbuffer *exec_buf = data;
992 struct _drm_i915_batchbuffer *batch = &exec_buf->batch;
993 struct drm_fence_arg *fence_arg = &exec_buf->fence_arg;
996 struct drm_buffer_object **buffers;
997 struct drm_fence_object *fence;
999 if (!dev_priv->allow_batchbuffer) {
1000 DRM_ERROR("Batchbuffer ioctl disabled\n");
1005 if (batch->num_cliprects && DRM_VERIFYAREA_READ(batch->cliprects,
1006 batch->num_cliprects *
1007 sizeof(struct drm_clip_rect)))
1010 if (exec_buf->num_buffers > dev_priv->max_validate_buffers)
1014 ret = drm_bo_read_lock(&dev->bm.bm_lock);
1019 * The cmdbuf_mutex makes sure the validate-submit-fence
1020 * operation is atomic.
1023 ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
1025 drm_bo_read_unlock(&dev->bm.bm_lock);
1029 num_buffers = exec_buf->num_buffers;
1031 buffers = drm_calloc(num_buffers, sizeof(struct drm_buffer_object *), DRM_MEM_DRIVER);
1033 drm_bo_read_unlock(&dev->bm.bm_lock);
1034 mutex_unlock(&dev_priv->cmdbuf_mutex);
1038 /* validate buffer list + fixup relocations */
1039 ret = i915_validate_buffer_list(file_priv, 0, exec_buf->ops_list,
1040 buffers, &num_buffers);
1044 /* make sure all previous memory operations have passed */
1045 DRM_MEMORYBARRIER();
1046 drm_agp_chipset_flush(dev);
1049 batch->start = buffers[num_buffers-1]->offset;
1051 DRM_DEBUG("i915 exec batchbuffer, start %x used %d cliprects %d\n",
1052 batch->start, batch->used, batch->num_cliprects);
1054 ret = i915_dispatch_batchbuffer(dev, batch);
1058 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
1061 ret = drm_fence_buffer_objects(dev, NULL, 0, NULL, &fence);
1065 if (!(fence_arg->flags & DRM_FENCE_FLAG_NO_USER)) {
1066 ret = drm_fence_add_user_object(file_priv, fence, fence_arg->flags & DRM_FENCE_FLAG_SHAREABLE);
1068 fence_arg->handle = fence->base.hash.key;
1069 fence_arg->fence_class = fence->fence_class;
1070 fence_arg->type = fence->type;
1071 fence_arg->signaled = fence->signaled;
1074 drm_fence_usage_deref_unlocked(&fence);
1078 mutex_lock(&dev->struct_mutex);
1079 i915_dereference_buffers_locked(buffers, num_buffers);
1080 mutex_unlock(&dev->struct_mutex);
1083 drm_free(buffers, (exec_buf->num_buffers * sizeof(struct drm_buffer_object *)), DRM_MEM_DRIVER);
1085 mutex_unlock(&dev_priv->cmdbuf_mutex);
1086 drm_bo_read_unlock(&dev->bm.bm_lock);
1091 static int i915_do_cleanup_pageflip(struct drm_device * dev)
1093 drm_i915_private_t *dev_priv = dev->dev_private;
1094 int i, planes, num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2;
1096 DRM_DEBUG("%s\n", __FUNCTION__);
1098 for (i = 0, planes = 0; i < 2; i++)
1099 if (dev_priv->sarea_priv->pf_current_page & (0x3 << (2 * i))) {
1100 dev_priv->sarea_priv->pf_current_page =
1101 (dev_priv->sarea_priv->pf_current_page &
1102 ~(0x3 << (2 * i))) | (num_pages - 1) << (2 * i);
1108 i915_dispatch_flip(dev, planes, 0);
1113 static int i915_flip_bufs(struct drm_device *dev, void *data, struct drm_file *file_priv)
1115 drm_i915_flip_t *param = data;
1117 DRM_DEBUG("%s\n", __FUNCTION__);
1119 LOCK_TEST_WITH_RETURN(dev, file_priv);
1121 /* This is really planes */
1122 if (param->pipes & ~0x3) {
1123 DRM_ERROR("Invalid planes 0x%x, only <= 0x3 is valid\n",
1128 i915_dispatch_flip(dev, param->pipes, 0);
1134 static int i915_getparam(struct drm_device *dev, void *data,
1135 struct drm_file *file_priv)
1137 drm_i915_private_t *dev_priv = dev->dev_private;
1138 drm_i915_getparam_t *param = data;
1142 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
1146 switch (param->param) {
1147 case I915_PARAM_IRQ_ACTIVE:
1148 value = dev->irq ? 1 : 0;
1150 case I915_PARAM_ALLOW_BATCHBUFFER:
1151 value = dev_priv->allow_batchbuffer ? 1 : 0;
1153 case I915_PARAM_LAST_DISPATCH:
1154 value = READ_BREADCRUMB(dev_priv);
1157 DRM_ERROR("Unknown parameter %d\n", param->param);
1161 if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
1162 DRM_ERROR("DRM_COPY_TO_USER failed\n");
1169 static int i915_setparam(struct drm_device *dev, void *data,
1170 struct drm_file *file_priv)
1172 drm_i915_private_t *dev_priv = dev->dev_private;
1173 drm_i915_setparam_t *param = data;
1176 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
1180 switch (param->param) {
1181 case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
1182 dev_priv->use_mi_batchbuffer_start = param->value;
1184 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
1185 dev_priv->tex_lru_log_granularity = param->value;
1187 case I915_SETPARAM_ALLOW_BATCHBUFFER:
1188 dev_priv->allow_batchbuffer = param->value;
1191 DRM_ERROR("unknown parameter %d\n", param->param);
1198 drm_i915_mmio_entry_t mmio_table[] = {
1199 [MMIO_REGS_PS_DEPTH_COUNT] = {
1200 I915_MMIO_MAY_READ|I915_MMIO_MAY_WRITE,
1206 static int mmio_table_size = sizeof(mmio_table)/sizeof(drm_i915_mmio_entry_t);
1208 static int i915_mmio(struct drm_device *dev, void *data,
1209 struct drm_file *file_priv)
1212 drm_i915_private_t *dev_priv = dev->dev_private;
1213 drm_i915_mmio_entry_t *e;
1214 drm_i915_mmio_t *mmio = data;
1219 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
1223 if (mmio->reg >= mmio_table_size)
1226 e = &mmio_table[mmio->reg];
1227 base = (u8 *) dev_priv->mmio_map->handle + e->offset;
1229 switch (mmio->read_write) {
1230 case I915_MMIO_READ:
1231 if (!(e->flag & I915_MMIO_MAY_READ))
1233 for (i = 0; i < e->size / 4; i++)
1234 buf[i] = I915_READ(e->offset + i * 4);
1235 if (DRM_COPY_TO_USER(mmio->data, buf, e->size)) {
1236 DRM_ERROR("DRM_COPY_TO_USER failed\n");
1241 case I915_MMIO_WRITE:
1242 if (!(e->flag & I915_MMIO_MAY_WRITE))
1244 if(DRM_COPY_FROM_USER(buf, mmio->data, e->size)) {
1245 DRM_ERROR("DRM_COPY_TO_USER failed\n");
1248 for (i = 0; i < e->size / 4; i++)
1249 I915_WRITE(e->offset + i * 4, buf[i]);
1255 static int i915_set_status_page(struct drm_device *dev, void *data,
1256 struct drm_file *file_priv)
1258 drm_i915_private_t *dev_priv = dev->dev_private;
1259 drm_i915_hws_addr_t *hws = data;
1262 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
1265 DRM_DEBUG("set status page addr 0x%08x\n", (u32)hws->addr);
1267 dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12);
1269 dev_priv->hws_map.offset = dev->agp->base + hws->addr;
1270 dev_priv->hws_map.size = 4*1024;
1271 dev_priv->hws_map.type = 0;
1272 dev_priv->hws_map.flags = 0;
1273 dev_priv->hws_map.mtrr = 0;
1275 drm_core_ioremap(&dev_priv->hws_map, dev);
1276 if (dev_priv->hws_map.handle == NULL) {
1277 i915_dma_cleanup(dev);
1278 dev_priv->status_gfx_addr = 0;
1279 DRM_ERROR("can not ioremap virtual address for"
1280 " G33 hw status page\n");
1283 dev_priv->hw_status_page = dev_priv->hws_map.handle;
1285 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
1286 I915_WRITE(0x02080, dev_priv->status_gfx_addr);
1287 DRM_DEBUG("load hws 0x2080 with gfx mem 0x%x\n",
1288 dev_priv->status_gfx_addr);
1289 DRM_DEBUG("load hws at %p\n", dev_priv->hw_status_page);
1293 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1295 struct drm_i915_private *dev_priv = dev->dev_private;
1296 unsigned long base, size;
1297 int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1;
1299 /* i915 has 4 more counters */
1301 dev->types[6] = _DRM_STAT_IRQ;
1302 dev->types[7] = _DRM_STAT_PRIMARY;
1303 dev->types[8] = _DRM_STAT_SECONDARY;
1304 dev->types[9] = _DRM_STAT_DMA;
1306 dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER);
1307 if (dev_priv == NULL)
1310 memset(dev_priv, 0, sizeof(drm_i915_private_t));
1312 dev->dev_private = (void *)dev_priv;
1314 /* Add register map (needed for suspend/resume) */
1315 base = drm_get_resource_start(dev, mmio_bar);
1316 size = drm_get_resource_len(dev, mmio_bar);
1318 ret = drm_addmap(dev, base, size, _DRM_REGISTERS, _DRM_KERNEL,
1319 &dev_priv->mmio_map);
1321 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
1322 intel_init_chipset_flush_compat(dev);
1327 int i915_driver_unload(struct drm_device *dev)
1329 struct drm_i915_private *dev_priv = dev->dev_private;
1331 if (dev_priv->mmio_map)
1332 drm_rmmap(dev, dev_priv->mmio_map);
1334 drm_free(dev->dev_private, sizeof(drm_i915_private_t),
1336 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
1337 intel_fini_chipset_flush_compat(dev);
1342 void i915_driver_lastclose(struct drm_device * dev)
1344 drm_i915_private_t *dev_priv = dev->dev_private;
1346 if (drm_getsarea(dev) && dev_priv->sarea_priv)
1347 i915_do_cleanup_pageflip(dev);
1348 if (dev_priv->agp_heap)
1349 i915_mem_takedown(&(dev_priv->agp_heap));
1351 i915_dma_cleanup(dev);
1354 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1356 drm_i915_private_t *dev_priv = dev->dev_private;
1357 i915_mem_release(dev, file_priv, dev_priv->agp_heap);
1360 struct drm_ioctl_desc i915_ioctls[] = {
1361 DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1362 DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
1363 DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
1364 DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
1365 DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
1366 DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
1367 DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
1368 DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1369 DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
1370 DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
1371 DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1372 DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
1373 DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP, i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1374 DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE, i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1375 DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH ),
1376 DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1377 DRM_IOCTL_DEF(DRM_I915_MMIO, i915_mmio, DRM_AUTH),
1378 DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH),
1379 #ifdef I915_HAVE_BUFFER
1380 DRM_IOCTL_DEF(DRM_I915_EXECBUFFER, i915_execbuffer, DRM_AUTH),
1384 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1387 * Determine if the device really is AGP or not.
1389 * All Intel graphics chipsets are treated as AGP, even if they are really
1392 * \param dev The device to be tested.
1395 * A value of 1 is always retured to indictate every i9x5 is AGP.
1397 int i915_driver_device_is_agp(struct drm_device * dev)
1402 int i915_driver_firstopen(struct drm_device *dev)
1404 #ifdef I915_HAVE_BUFFER
1405 drm_bo_driver_init(dev);