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.
31 #include "drm_crtc_helper.h"
32 #include "drm_fb_helper.h"
33 #include "intel_drv.h"
36 #include "i915_trace.h"
37 #include <linux/pci.h>
38 #include <linux/vgaarb.h>
39 #include <linux/acpi.h>
40 #include <linux/pnp.h>
41 #include <linux/vga_switcheroo.h>
42 #include <linux/slab.h>
43 #include <acpi/video.h>
46 * Sets up the hardware status page for devices that need a physical address
49 static int i915_init_phys_hws(struct drm_device *dev)
51 drm_i915_private_t *dev_priv = dev->dev_private;
52 /* Program Hardware Status Page */
53 dev_priv->status_page_dmah =
54 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE);
56 if (!dev_priv->status_page_dmah) {
57 DRM_ERROR("Can not allocate hardware status page\n");
60 dev_priv->render_ring.status_page.page_addr
61 = dev_priv->status_page_dmah->vaddr;
62 dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
64 memset(dev_priv->render_ring.status_page.page_addr, 0, PAGE_SIZE);
66 if (INTEL_INFO(dev)->gen >= 4)
67 dev_priv->dma_status_page |= (dev_priv->dma_status_page >> 28) &
70 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
71 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
76 * Frees the hardware status page, whether it's a physical address or a virtual
77 * address set up by the X Server.
79 static void i915_free_hws(struct drm_device *dev)
81 drm_i915_private_t *dev_priv = dev->dev_private;
82 if (dev_priv->status_page_dmah) {
83 drm_pci_free(dev, dev_priv->status_page_dmah);
84 dev_priv->status_page_dmah = NULL;
87 if (dev_priv->render_ring.status_page.gfx_addr) {
88 dev_priv->render_ring.status_page.gfx_addr = 0;
89 drm_core_ioremapfree(&dev_priv->hws_map, dev);
92 /* Need to rewrite hardware status page */
93 I915_WRITE(HWS_PGA, 0x1ffff000);
96 void i915_kernel_lost_context(struct drm_device * dev)
98 drm_i915_private_t *dev_priv = dev->dev_private;
99 struct drm_i915_master_private *master_priv;
100 struct intel_ring_buffer *ring = &dev_priv->render_ring;
103 * We should never lose context on the ring with modesetting
104 * as we don't expose it to userspace
106 if (drm_core_check_feature(dev, DRIVER_MODESET))
109 ring->head = I915_READ_HEAD(ring) & HEAD_ADDR;
110 ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
111 ring->space = ring->head - (ring->tail + 8);
113 ring->space += ring->size;
115 if (!dev->primary->master)
118 master_priv = dev->primary->master->driver_priv;
119 if (ring->head == ring->tail && master_priv->sarea_priv)
120 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
123 static int i915_dma_cleanup(struct drm_device * dev)
125 drm_i915_private_t *dev_priv = dev->dev_private;
126 /* Make sure interrupts are disabled here because the uninstall ioctl
127 * may not have been called from userspace and after dev_private
128 * is freed, it's too late.
130 if (dev->irq_enabled)
131 drm_irq_uninstall(dev);
133 mutex_lock(&dev->struct_mutex);
134 intel_cleanup_ring_buffer(&dev_priv->render_ring);
135 intel_cleanup_ring_buffer(&dev_priv->bsd_ring);
136 intel_cleanup_ring_buffer(&dev_priv->blt_ring);
137 mutex_unlock(&dev->struct_mutex);
139 /* Clear the HWS virtual address at teardown */
140 if (I915_NEED_GFX_HWS(dev))
146 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
148 drm_i915_private_t *dev_priv = dev->dev_private;
149 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
151 master_priv->sarea = drm_getsarea(dev);
152 if (master_priv->sarea) {
153 master_priv->sarea_priv = (drm_i915_sarea_t *)
154 ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
156 DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
159 if (init->ring_size != 0) {
160 if (dev_priv->render_ring.gem_object != NULL) {
161 i915_dma_cleanup(dev);
162 DRM_ERROR("Client tried to initialize ringbuffer in "
167 dev_priv->render_ring.size = init->ring_size;
169 dev_priv->render_ring.map.offset = init->ring_start;
170 dev_priv->render_ring.map.size = init->ring_size;
171 dev_priv->render_ring.map.type = 0;
172 dev_priv->render_ring.map.flags = 0;
173 dev_priv->render_ring.map.mtrr = 0;
175 drm_core_ioremap_wc(&dev_priv->render_ring.map, dev);
177 if (dev_priv->render_ring.map.handle == NULL) {
178 i915_dma_cleanup(dev);
179 DRM_ERROR("can not ioremap virtual address for"
185 dev_priv->render_ring.virtual_start = dev_priv->render_ring.map.handle;
187 dev_priv->cpp = init->cpp;
188 dev_priv->back_offset = init->back_offset;
189 dev_priv->front_offset = init->front_offset;
190 dev_priv->current_page = 0;
191 if (master_priv->sarea_priv)
192 master_priv->sarea_priv->pf_current_page = 0;
194 /* Allow hardware batchbuffers unless told otherwise.
196 dev_priv->allow_batchbuffer = 1;
201 static int i915_dma_resume(struct drm_device * dev)
203 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
205 struct intel_ring_buffer *ring;
206 DRM_DEBUG_DRIVER("%s\n", __func__);
208 ring = &dev_priv->render_ring;
210 if (ring->map.handle == NULL) {
211 DRM_ERROR("can not ioremap virtual address for"
216 /* Program Hardware Status Page */
217 if (!ring->status_page.page_addr) {
218 DRM_ERROR("Can not find hardware status page\n");
221 DRM_DEBUG_DRIVER("hw status page @ %p\n",
222 ring->status_page.page_addr);
223 if (ring->status_page.gfx_addr != 0)
224 intel_ring_setup_status_page(ring);
226 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
228 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
233 static int i915_dma_init(struct drm_device *dev, void *data,
234 struct drm_file *file_priv)
236 drm_i915_init_t *init = data;
239 switch (init->func) {
241 retcode = i915_initialize(dev, init);
243 case I915_CLEANUP_DMA:
244 retcode = i915_dma_cleanup(dev);
246 case I915_RESUME_DMA:
247 retcode = i915_dma_resume(dev);
257 /* Implement basically the same security restrictions as hardware does
258 * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
260 * Most of the calculations below involve calculating the size of a
261 * particular instruction. It's important to get the size right as
262 * that tells us where the next instruction to check is. Any illegal
263 * instruction detected will be given a size of zero, which is a
264 * signal to abort the rest of the buffer.
266 static int validate_cmd(int cmd)
268 switch (((cmd >> 29) & 0x7)) {
270 switch ((cmd >> 23) & 0x3f) {
272 return 1; /* MI_NOOP */
274 return 1; /* MI_FLUSH */
276 return 0; /* disallow everything else */
280 return 0; /* reserved */
282 return (cmd & 0xff) + 2; /* 2d commands */
284 if (((cmd >> 24) & 0x1f) <= 0x18)
287 switch ((cmd >> 24) & 0x1f) {
291 switch ((cmd >> 16) & 0xff) {
293 return (cmd & 0x1f) + 2;
295 return (cmd & 0xf) + 2;
297 return (cmd & 0xffff) + 2;
301 return (cmd & 0xffff) + 1;
305 if ((cmd & (1 << 23)) == 0) /* inline vertices */
306 return (cmd & 0x1ffff) + 2;
307 else if (cmd & (1 << 17)) /* indirect random */
308 if ((cmd & 0xffff) == 0)
309 return 0; /* unknown length, too hard */
311 return (((cmd & 0xffff) + 1) / 2) + 1;
313 return 2; /* indirect sequential */
324 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
326 drm_i915_private_t *dev_priv = dev->dev_private;
329 if ((dwords+1) * sizeof(int) >= dev_priv->render_ring.size - 8)
332 for (i = 0; i < dwords;) {
333 int sz = validate_cmd(buffer[i]);
334 if (sz == 0 || i + sz > dwords)
339 ret = BEGIN_LP_RING((dwords+1)&~1);
343 for (i = 0; i < dwords; i++)
354 i915_emit_box(struct drm_device *dev,
355 struct drm_clip_rect *boxes,
356 int i, int DR1, int DR4)
358 struct drm_i915_private *dev_priv = dev->dev_private;
359 struct drm_clip_rect box = boxes[i];
362 if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
363 DRM_ERROR("Bad box %d,%d..%d,%d\n",
364 box.x1, box.y1, box.x2, box.y2);
368 if (INTEL_INFO(dev)->gen >= 4) {
369 ret = BEGIN_LP_RING(4);
373 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
374 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
375 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
378 ret = BEGIN_LP_RING(6);
382 OUT_RING(GFX_OP_DRAWRECT_INFO);
384 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
385 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
394 /* XXX: Emitting the counter should really be moved to part of the IRQ
395 * emit. For now, do it in both places:
398 static void i915_emit_breadcrumb(struct drm_device *dev)
400 drm_i915_private_t *dev_priv = dev->dev_private;
401 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
404 if (dev_priv->counter > 0x7FFFFFFFUL)
405 dev_priv->counter = 0;
406 if (master_priv->sarea_priv)
407 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
409 if (BEGIN_LP_RING(4) == 0) {
410 OUT_RING(MI_STORE_DWORD_INDEX);
411 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
412 OUT_RING(dev_priv->counter);
418 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
419 drm_i915_cmdbuffer_t *cmd,
420 struct drm_clip_rect *cliprects,
423 int nbox = cmd->num_cliprects;
424 int i = 0, count, ret;
427 DRM_ERROR("alignment");
431 i915_kernel_lost_context(dev);
433 count = nbox ? nbox : 1;
435 for (i = 0; i < count; i++) {
437 ret = i915_emit_box(dev, cliprects, i,
443 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
448 i915_emit_breadcrumb(dev);
452 static int i915_dispatch_batchbuffer(struct drm_device * dev,
453 drm_i915_batchbuffer_t * batch,
454 struct drm_clip_rect *cliprects)
456 struct drm_i915_private *dev_priv = dev->dev_private;
457 int nbox = batch->num_cliprects;
460 if ((batch->start | batch->used) & 0x7) {
461 DRM_ERROR("alignment");
465 i915_kernel_lost_context(dev);
467 count = nbox ? nbox : 1;
468 for (i = 0; i < count; i++) {
470 ret = i915_emit_box(dev, cliprects, i,
471 batch->DR1, batch->DR4);
476 if (!IS_I830(dev) && !IS_845G(dev)) {
477 ret = BEGIN_LP_RING(2);
481 if (INTEL_INFO(dev)->gen >= 4) {
482 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
483 OUT_RING(batch->start);
485 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
486 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
489 ret = BEGIN_LP_RING(4);
493 OUT_RING(MI_BATCH_BUFFER);
494 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
495 OUT_RING(batch->start + batch->used - 4);
502 if (IS_G4X(dev) || IS_GEN5(dev)) {
503 if (BEGIN_LP_RING(2) == 0) {
504 OUT_RING(MI_FLUSH | MI_NO_WRITE_FLUSH | MI_INVALIDATE_ISP);
510 i915_emit_breadcrumb(dev);
514 static int i915_dispatch_flip(struct drm_device * dev)
516 drm_i915_private_t *dev_priv = dev->dev_private;
517 struct drm_i915_master_private *master_priv =
518 dev->primary->master->driver_priv;
521 if (!master_priv->sarea_priv)
524 DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
526 dev_priv->current_page,
527 master_priv->sarea_priv->pf_current_page);
529 i915_kernel_lost_context(dev);
531 ret = BEGIN_LP_RING(10);
535 OUT_RING(MI_FLUSH | MI_READ_FLUSH);
538 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
540 if (dev_priv->current_page == 0) {
541 OUT_RING(dev_priv->back_offset);
542 dev_priv->current_page = 1;
544 OUT_RING(dev_priv->front_offset);
545 dev_priv->current_page = 0;
549 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
554 master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
556 if (BEGIN_LP_RING(4) == 0) {
557 OUT_RING(MI_STORE_DWORD_INDEX);
558 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
559 OUT_RING(dev_priv->counter);
564 master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
568 static int i915_quiescent(struct drm_device * dev)
570 drm_i915_private_t *dev_priv = dev->dev_private;
572 i915_kernel_lost_context(dev);
573 return intel_wait_ring_buffer(&dev_priv->render_ring,
574 dev_priv->render_ring.size - 8);
577 static int i915_flush_ioctl(struct drm_device *dev, void *data,
578 struct drm_file *file_priv)
582 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
584 mutex_lock(&dev->struct_mutex);
585 ret = i915_quiescent(dev);
586 mutex_unlock(&dev->struct_mutex);
591 static int i915_batchbuffer(struct drm_device *dev, void *data,
592 struct drm_file *file_priv)
594 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
595 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
596 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
597 master_priv->sarea_priv;
598 drm_i915_batchbuffer_t *batch = data;
600 struct drm_clip_rect *cliprects = NULL;
602 if (!dev_priv->allow_batchbuffer) {
603 DRM_ERROR("Batchbuffer ioctl disabled\n");
607 DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
608 batch->start, batch->used, batch->num_cliprects);
610 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
612 if (batch->num_cliprects < 0)
615 if (batch->num_cliprects) {
616 cliprects = kcalloc(batch->num_cliprects,
617 sizeof(struct drm_clip_rect),
619 if (cliprects == NULL)
622 ret = copy_from_user(cliprects, batch->cliprects,
623 batch->num_cliprects *
624 sizeof(struct drm_clip_rect));
631 mutex_lock(&dev->struct_mutex);
632 ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
633 mutex_unlock(&dev->struct_mutex);
636 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
644 static int i915_cmdbuffer(struct drm_device *dev, void *data,
645 struct drm_file *file_priv)
647 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
648 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
649 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
650 master_priv->sarea_priv;
651 drm_i915_cmdbuffer_t *cmdbuf = data;
652 struct drm_clip_rect *cliprects = NULL;
656 DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
657 cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
659 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
661 if (cmdbuf->num_cliprects < 0)
664 batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
665 if (batch_data == NULL)
668 ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
671 goto fail_batch_free;
674 if (cmdbuf->num_cliprects) {
675 cliprects = kcalloc(cmdbuf->num_cliprects,
676 sizeof(struct drm_clip_rect), GFP_KERNEL);
677 if (cliprects == NULL) {
679 goto fail_batch_free;
682 ret = copy_from_user(cliprects, cmdbuf->cliprects,
683 cmdbuf->num_cliprects *
684 sizeof(struct drm_clip_rect));
691 mutex_lock(&dev->struct_mutex);
692 ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
693 mutex_unlock(&dev->struct_mutex);
695 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
700 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
710 static int i915_flip_bufs(struct drm_device *dev, void *data,
711 struct drm_file *file_priv)
715 DRM_DEBUG_DRIVER("%s\n", __func__);
717 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
719 mutex_lock(&dev->struct_mutex);
720 ret = i915_dispatch_flip(dev);
721 mutex_unlock(&dev->struct_mutex);
726 static int i915_getparam(struct drm_device *dev, void *data,
727 struct drm_file *file_priv)
729 drm_i915_private_t *dev_priv = dev->dev_private;
730 drm_i915_getparam_t *param = data;
734 DRM_ERROR("called with no initialization\n");
738 switch (param->param) {
739 case I915_PARAM_IRQ_ACTIVE:
740 value = dev->pdev->irq ? 1 : 0;
742 case I915_PARAM_ALLOW_BATCHBUFFER:
743 value = dev_priv->allow_batchbuffer ? 1 : 0;
745 case I915_PARAM_LAST_DISPATCH:
746 value = READ_BREADCRUMB(dev_priv);
748 case I915_PARAM_CHIPSET_ID:
749 value = dev->pci_device;
751 case I915_PARAM_HAS_GEM:
752 value = dev_priv->has_gem;
754 case I915_PARAM_NUM_FENCES_AVAIL:
755 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
757 case I915_PARAM_HAS_OVERLAY:
758 value = dev_priv->overlay ? 1 : 0;
760 case I915_PARAM_HAS_PAGEFLIPPING:
763 case I915_PARAM_HAS_EXECBUF2:
765 value = dev_priv->has_gem;
767 case I915_PARAM_HAS_BSD:
768 value = HAS_BSD(dev);
770 case I915_PARAM_HAS_BLT:
771 value = HAS_BLT(dev);
773 case I915_PARAM_HAS_RELAXED_FENCING:
777 DRM_DEBUG_DRIVER("Unknown parameter %d\n",
782 if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
783 DRM_ERROR("DRM_COPY_TO_USER failed\n");
790 static int i915_setparam(struct drm_device *dev, void *data,
791 struct drm_file *file_priv)
793 drm_i915_private_t *dev_priv = dev->dev_private;
794 drm_i915_setparam_t *param = data;
797 DRM_ERROR("called with no initialization\n");
801 switch (param->param) {
802 case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
804 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
805 dev_priv->tex_lru_log_granularity = param->value;
807 case I915_SETPARAM_ALLOW_BATCHBUFFER:
808 dev_priv->allow_batchbuffer = param->value;
810 case I915_SETPARAM_NUM_USED_FENCES:
811 if (param->value > dev_priv->num_fence_regs ||
814 /* Userspace can use first N regs */
815 dev_priv->fence_reg_start = param->value;
818 DRM_DEBUG_DRIVER("unknown parameter %d\n",
826 static int i915_set_status_page(struct drm_device *dev, void *data,
827 struct drm_file *file_priv)
829 drm_i915_private_t *dev_priv = dev->dev_private;
830 drm_i915_hws_addr_t *hws = data;
831 struct intel_ring_buffer *ring = &dev_priv->render_ring;
833 if (!I915_NEED_GFX_HWS(dev))
837 DRM_ERROR("called with no initialization\n");
841 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
842 WARN(1, "tried to set status page when mode setting active\n");
846 DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
848 ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12);
850 dev_priv->hws_map.offset = dev->agp->base + hws->addr;
851 dev_priv->hws_map.size = 4*1024;
852 dev_priv->hws_map.type = 0;
853 dev_priv->hws_map.flags = 0;
854 dev_priv->hws_map.mtrr = 0;
856 drm_core_ioremap_wc(&dev_priv->hws_map, dev);
857 if (dev_priv->hws_map.handle == NULL) {
858 i915_dma_cleanup(dev);
859 ring->status_page.gfx_addr = 0;
860 DRM_ERROR("can not ioremap virtual address for"
861 " G33 hw status page\n");
864 ring->status_page.page_addr = dev_priv->hws_map.handle;
865 memset(ring->status_page.page_addr, 0, PAGE_SIZE);
866 I915_WRITE(HWS_PGA, ring->status_page.gfx_addr);
868 DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
869 ring->status_page.gfx_addr);
870 DRM_DEBUG_DRIVER("load hws at %p\n",
871 ring->status_page.page_addr);
875 static int i915_get_bridge_dev(struct drm_device *dev)
877 struct drm_i915_private *dev_priv = dev->dev_private;
879 dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
880 if (!dev_priv->bridge_dev) {
881 DRM_ERROR("bridge device not found\n");
887 #define MCHBAR_I915 0x44
888 #define MCHBAR_I965 0x48
889 #define MCHBAR_SIZE (4*4096)
891 #define DEVEN_REG 0x54
892 #define DEVEN_MCHBAR_EN (1 << 28)
894 /* Allocate space for the MCH regs if needed, return nonzero on error */
896 intel_alloc_mchbar_resource(struct drm_device *dev)
898 drm_i915_private_t *dev_priv = dev->dev_private;
899 int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
900 u32 temp_lo, temp_hi = 0;
904 if (INTEL_INFO(dev)->gen >= 4)
905 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
906 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
907 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
909 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
912 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
916 /* Get some space for it */
917 dev_priv->mch_res.name = "i915 MCHBAR";
918 dev_priv->mch_res.flags = IORESOURCE_MEM;
919 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
921 MCHBAR_SIZE, MCHBAR_SIZE,
923 0, pcibios_align_resource,
924 dev_priv->bridge_dev);
926 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
927 dev_priv->mch_res.start = 0;
931 if (INTEL_INFO(dev)->gen >= 4)
932 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
933 upper_32_bits(dev_priv->mch_res.start));
935 pci_write_config_dword(dev_priv->bridge_dev, reg,
936 lower_32_bits(dev_priv->mch_res.start));
940 /* Setup MCHBAR if possible, return true if we should disable it again */
942 intel_setup_mchbar(struct drm_device *dev)
944 drm_i915_private_t *dev_priv = dev->dev_private;
945 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
949 dev_priv->mchbar_need_disable = false;
951 if (IS_I915G(dev) || IS_I915GM(dev)) {
952 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
953 enabled = !!(temp & DEVEN_MCHBAR_EN);
955 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
959 /* If it's already enabled, don't have to do anything */
963 if (intel_alloc_mchbar_resource(dev))
966 dev_priv->mchbar_need_disable = true;
968 /* Space is allocated or reserved, so enable it. */
969 if (IS_I915G(dev) || IS_I915GM(dev)) {
970 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
971 temp | DEVEN_MCHBAR_EN);
973 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
974 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
979 intel_teardown_mchbar(struct drm_device *dev)
981 drm_i915_private_t *dev_priv = dev->dev_private;
982 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
985 if (dev_priv->mchbar_need_disable) {
986 if (IS_I915G(dev) || IS_I915GM(dev)) {
987 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
988 temp &= ~DEVEN_MCHBAR_EN;
989 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
991 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
993 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
997 if (dev_priv->mch_res.start)
998 release_resource(&dev_priv->mch_res);
1001 #define PTE_ADDRESS_MASK 0xfffff000
1002 #define PTE_ADDRESS_MASK_HIGH 0x000000f0 /* i915+ */
1003 #define PTE_MAPPING_TYPE_UNCACHED (0 << 1)
1004 #define PTE_MAPPING_TYPE_DCACHE (1 << 1) /* i830 only */
1005 #define PTE_MAPPING_TYPE_CACHED (3 << 1)
1006 #define PTE_MAPPING_TYPE_MASK (3 << 1)
1007 #define PTE_VALID (1 << 0)
1010 * i915_stolen_to_phys - take an offset into stolen memory and turn it into
1013 * @offset: address to translate
1015 * Some chip functions require allocations from stolen space and need the
1016 * physical address of the memory in question.
1018 static unsigned long i915_stolen_to_phys(struct drm_device *dev, u32 offset)
1020 struct drm_i915_private *dev_priv = dev->dev_private;
1021 struct pci_dev *pdev = dev_priv->bridge_dev;
1025 /* On the machines I have tested the Graphics Base of Stolen Memory
1026 * is unreliable, so compute the base by subtracting the stolen memory
1027 * from the Top of Low Usable DRAM which is where the BIOS places
1028 * the graphics stolen memory.
1030 if (INTEL_INFO(dev)->gen > 3 || IS_G33(dev)) {
1031 /* top 32bits are reserved = 0 */
1032 pci_read_config_dword(pdev, 0xA4, &base);
1034 /* XXX presume 8xx is the same as i915 */
1035 pci_bus_read_config_dword(pdev->bus, 2, 0x5C, &base);
1038 if (INTEL_INFO(dev)->gen > 3 || IS_G33(dev)) {
1040 pci_read_config_word(pdev, 0xb0, &val);
1041 base = val >> 4 << 20;
1044 pci_read_config_byte(pdev, 0x9c, &val);
1045 base = val >> 3 << 27;
1047 base -= dev_priv->mm.gtt->gtt_stolen_entries << PAGE_SHIFT;
1050 return base + offset;
1053 static void i915_warn_stolen(struct drm_device *dev)
1055 DRM_ERROR("not enough stolen space for compressed buffer, disabling\n");
1056 DRM_ERROR("hint: you may be able to increase stolen memory size in the BIOS to avoid this\n");
1059 static void i915_setup_compression(struct drm_device *dev, int size)
1061 struct drm_i915_private *dev_priv = dev->dev_private;
1062 struct drm_mm_node *compressed_fb, *uninitialized_var(compressed_llb);
1063 unsigned long cfb_base;
1064 unsigned long ll_base = 0;
1066 compressed_fb = drm_mm_search_free(&dev_priv->mm.stolen, size, 4096, 0);
1068 compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
1072 cfb_base = i915_stolen_to_phys(dev, compressed_fb->start);
1076 if (!(IS_GM45(dev) || IS_IRONLAKE_M(dev))) {
1077 compressed_llb = drm_mm_search_free(&dev_priv->mm.stolen,
1080 compressed_llb = drm_mm_get_block(compressed_llb,
1082 if (!compressed_llb)
1085 ll_base = i915_stolen_to_phys(dev, compressed_llb->start);
1090 dev_priv->cfb_size = size;
1092 intel_disable_fbc(dev);
1093 dev_priv->compressed_fb = compressed_fb;
1094 if (IS_IRONLAKE_M(dev))
1095 I915_WRITE(ILK_DPFC_CB_BASE, compressed_fb->start);
1096 else if (IS_GM45(dev)) {
1097 I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
1099 I915_WRITE(FBC_CFB_BASE, cfb_base);
1100 I915_WRITE(FBC_LL_BASE, ll_base);
1101 dev_priv->compressed_llb = compressed_llb;
1104 DRM_DEBUG_KMS("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n",
1105 cfb_base, ll_base, size >> 20);
1109 drm_mm_put_block(compressed_llb);
1111 drm_mm_put_block(compressed_fb);
1113 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1114 i915_warn_stolen(dev);
1117 static void i915_cleanup_compression(struct drm_device *dev)
1119 struct drm_i915_private *dev_priv = dev->dev_private;
1121 drm_mm_put_block(dev_priv->compressed_fb);
1122 if (dev_priv->compressed_llb)
1123 drm_mm_put_block(dev_priv->compressed_llb);
1126 /* true = enable decode, false = disable decoder */
1127 static unsigned int i915_vga_set_decode(void *cookie, bool state)
1129 struct drm_device *dev = cookie;
1131 intel_modeset_vga_set_state(dev, state);
1133 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1134 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1136 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1139 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1141 struct drm_device *dev = pci_get_drvdata(pdev);
1142 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
1143 if (state == VGA_SWITCHEROO_ON) {
1144 printk(KERN_INFO "i915: switched on\n");
1145 /* i915 resume handler doesn't set to D0 */
1146 pci_set_power_state(dev->pdev, PCI_D0);
1149 printk(KERN_ERR "i915: switched off\n");
1150 i915_suspend(dev, pmm);
1154 static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
1156 struct drm_device *dev = pci_get_drvdata(pdev);
1159 spin_lock(&dev->count_lock);
1160 can_switch = (dev->open_count == 0);
1161 spin_unlock(&dev->count_lock);
1165 static int i915_load_modeset_init(struct drm_device *dev)
1167 struct drm_i915_private *dev_priv = dev->dev_private;
1168 unsigned long prealloc_size, gtt_size, mappable_size;
1171 prealloc_size = dev_priv->mm.gtt->gtt_stolen_entries << PAGE_SHIFT;
1172 gtt_size = dev_priv->mm.gtt->gtt_total_entries << PAGE_SHIFT;
1173 mappable_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
1175 /* Basic memrange allocator for stolen space */
1176 drm_mm_init(&dev_priv->mm.stolen, 0, prealloc_size);
1178 /* Let GEM Manage all of the aperture.
1180 * However, leave one page at the end still bound to the scratch page.
1181 * There are a number of places where the hardware apparently
1182 * prefetches past the end of the object, and we've seen multiple
1183 * hangs with the GPU head pointer stuck in a batchbuffer bound
1184 * at the last page of the aperture. One page should be enough to
1185 * keep any prefetching inside of the aperture.
1187 i915_gem_do_init(dev, 0, mappable_size, gtt_size - PAGE_SIZE);
1189 mutex_lock(&dev->struct_mutex);
1190 ret = i915_gem_init_ringbuffer(dev);
1191 mutex_unlock(&dev->struct_mutex);
1195 /* Try to set up FBC with a reasonable compressed buffer size */
1196 if (I915_HAS_FBC(dev) && i915_powersave) {
1199 /* Leave 1M for line length buffer & misc. */
1201 /* Try to get a 32M buffer... */
1202 if (prealloc_size > (36*1024*1024))
1203 cfb_size = 32*1024*1024;
1204 else /* fall back to 7/8 of the stolen space */
1205 cfb_size = prealloc_size * 7 / 8;
1206 i915_setup_compression(dev, cfb_size);
1209 /* Allow hardware batchbuffers unless told otherwise. */
1210 dev_priv->allow_batchbuffer = 1;
1212 ret = intel_parse_bios(dev);
1214 DRM_INFO("failed to find VBIOS tables\n");
1216 /* if we have > 1 VGA cards, then disable the radeon VGA resources */
1217 ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
1219 goto cleanup_ringbuffer;
1221 intel_register_dsm_handler();
1223 ret = vga_switcheroo_register_client(dev->pdev,
1224 i915_switcheroo_set_state,
1225 i915_switcheroo_can_switch);
1227 goto cleanup_vga_client;
1229 /* IIR "flip pending" bit means done if this bit is set */
1230 if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
1231 dev_priv->flip_pending_is_done = true;
1233 intel_modeset_init(dev);
1235 ret = drm_irq_install(dev);
1237 goto cleanup_vga_switcheroo;
1239 /* Always safe in the mode setting case. */
1240 /* FIXME: do pre/post-mode set stuff in core KMS code */
1241 dev->vblank_disable_allowed = 1;
1243 ret = intel_fbdev_init(dev);
1247 drm_kms_helper_poll_init(dev);
1249 /* We're off and running w/KMS */
1250 dev_priv->mm.suspended = 0;
1255 drm_irq_uninstall(dev);
1256 cleanup_vga_switcheroo:
1257 vga_switcheroo_unregister_client(dev->pdev);
1259 vga_client_register(dev->pdev, NULL, NULL, NULL);
1261 mutex_lock(&dev->struct_mutex);
1262 i915_gem_cleanup_ringbuffer(dev);
1263 mutex_unlock(&dev->struct_mutex);
1268 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1270 struct drm_i915_master_private *master_priv;
1272 master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1276 master->driver_priv = master_priv;
1280 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1282 struct drm_i915_master_private *master_priv = master->driver_priv;
1289 master->driver_priv = NULL;
1292 static void i915_pineview_get_mem_freq(struct drm_device *dev)
1294 drm_i915_private_t *dev_priv = dev->dev_private;
1297 tmp = I915_READ(CLKCFG);
1299 switch (tmp & CLKCFG_FSB_MASK) {
1300 case CLKCFG_FSB_533:
1301 dev_priv->fsb_freq = 533; /* 133*4 */
1303 case CLKCFG_FSB_800:
1304 dev_priv->fsb_freq = 800; /* 200*4 */
1306 case CLKCFG_FSB_667:
1307 dev_priv->fsb_freq = 667; /* 167*4 */
1309 case CLKCFG_FSB_400:
1310 dev_priv->fsb_freq = 400; /* 100*4 */
1314 switch (tmp & CLKCFG_MEM_MASK) {
1315 case CLKCFG_MEM_533:
1316 dev_priv->mem_freq = 533;
1318 case CLKCFG_MEM_667:
1319 dev_priv->mem_freq = 667;
1321 case CLKCFG_MEM_800:
1322 dev_priv->mem_freq = 800;
1326 /* detect pineview DDR3 setting */
1327 tmp = I915_READ(CSHRDDR3CTL);
1328 dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0;
1331 static void i915_ironlake_get_mem_freq(struct drm_device *dev)
1333 drm_i915_private_t *dev_priv = dev->dev_private;
1336 ddrpll = I915_READ16(DDRMPLL1);
1337 csipll = I915_READ16(CSIPLL0);
1339 switch (ddrpll & 0xff) {
1341 dev_priv->mem_freq = 800;
1344 dev_priv->mem_freq = 1066;
1347 dev_priv->mem_freq = 1333;
1350 dev_priv->mem_freq = 1600;
1353 DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n",
1355 dev_priv->mem_freq = 0;
1359 dev_priv->r_t = dev_priv->mem_freq;
1361 switch (csipll & 0x3ff) {
1363 dev_priv->fsb_freq = 3200;
1366 dev_priv->fsb_freq = 3733;
1369 dev_priv->fsb_freq = 4266;
1372 dev_priv->fsb_freq = 4800;
1375 dev_priv->fsb_freq = 5333;
1378 dev_priv->fsb_freq = 5866;
1381 dev_priv->fsb_freq = 6400;
1384 DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n",
1386 dev_priv->fsb_freq = 0;
1390 if (dev_priv->fsb_freq == 3200) {
1392 } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) {
1401 unsigned long vd; /* in .1 mil */
1402 unsigned long vm; /* in .1 mil */
1406 static struct v_table v_table[] = {
1407 { 0, 16125, 15000, 0x7f, },
1408 { 1, 16000, 14875, 0x7e, },
1409 { 2, 15875, 14750, 0x7d, },
1410 { 3, 15750, 14625, 0x7c, },
1411 { 4, 15625, 14500, 0x7b, },
1412 { 5, 15500, 14375, 0x7a, },
1413 { 6, 15375, 14250, 0x79, },
1414 { 7, 15250, 14125, 0x78, },
1415 { 8, 15125, 14000, 0x77, },
1416 { 9, 15000, 13875, 0x76, },
1417 { 10, 14875, 13750, 0x75, },
1418 { 11, 14750, 13625, 0x74, },
1419 { 12, 14625, 13500, 0x73, },
1420 { 13, 14500, 13375, 0x72, },
1421 { 14, 14375, 13250, 0x71, },
1422 { 15, 14250, 13125, 0x70, },
1423 { 16, 14125, 13000, 0x6f, },
1424 { 17, 14000, 12875, 0x6e, },
1425 { 18, 13875, 12750, 0x6d, },
1426 { 19, 13750, 12625, 0x6c, },
1427 { 20, 13625, 12500, 0x6b, },
1428 { 21, 13500, 12375, 0x6a, },
1429 { 22, 13375, 12250, 0x69, },
1430 { 23, 13250, 12125, 0x68, },
1431 { 24, 13125, 12000, 0x67, },
1432 { 25, 13000, 11875, 0x66, },
1433 { 26, 12875, 11750, 0x65, },
1434 { 27, 12750, 11625, 0x64, },
1435 { 28, 12625, 11500, 0x63, },
1436 { 29, 12500, 11375, 0x62, },
1437 { 30, 12375, 11250, 0x61, },
1438 { 31, 12250, 11125, 0x60, },
1439 { 32, 12125, 11000, 0x5f, },
1440 { 33, 12000, 10875, 0x5e, },
1441 { 34, 11875, 10750, 0x5d, },
1442 { 35, 11750, 10625, 0x5c, },
1443 { 36, 11625, 10500, 0x5b, },
1444 { 37, 11500, 10375, 0x5a, },
1445 { 38, 11375, 10250, 0x59, },
1446 { 39, 11250, 10125, 0x58, },
1447 { 40, 11125, 10000, 0x57, },
1448 { 41, 11000, 9875, 0x56, },
1449 { 42, 10875, 9750, 0x55, },
1450 { 43, 10750, 9625, 0x54, },
1451 { 44, 10625, 9500, 0x53, },
1452 { 45, 10500, 9375, 0x52, },
1453 { 46, 10375, 9250, 0x51, },
1454 { 47, 10250, 9125, 0x50, },
1455 { 48, 10125, 9000, 0x4f, },
1456 { 49, 10000, 8875, 0x4e, },
1457 { 50, 9875, 8750, 0x4d, },
1458 { 51, 9750, 8625, 0x4c, },
1459 { 52, 9625, 8500, 0x4b, },
1460 { 53, 9500, 8375, 0x4a, },
1461 { 54, 9375, 8250, 0x49, },
1462 { 55, 9250, 8125, 0x48, },
1463 { 56, 9125, 8000, 0x47, },
1464 { 57, 9000, 7875, 0x46, },
1465 { 58, 8875, 7750, 0x45, },
1466 { 59, 8750, 7625, 0x44, },
1467 { 60, 8625, 7500, 0x43, },
1468 { 61, 8500, 7375, 0x42, },
1469 { 62, 8375, 7250, 0x41, },
1470 { 63, 8250, 7125, 0x40, },
1471 { 64, 8125, 7000, 0x3f, },
1472 { 65, 8000, 6875, 0x3e, },
1473 { 66, 7875, 6750, 0x3d, },
1474 { 67, 7750, 6625, 0x3c, },
1475 { 68, 7625, 6500, 0x3b, },
1476 { 69, 7500, 6375, 0x3a, },
1477 { 70, 7375, 6250, 0x39, },
1478 { 71, 7250, 6125, 0x38, },
1479 { 72, 7125, 6000, 0x37, },
1480 { 73, 7000, 5875, 0x36, },
1481 { 74, 6875, 5750, 0x35, },
1482 { 75, 6750, 5625, 0x34, },
1483 { 76, 6625, 5500, 0x33, },
1484 { 77, 6500, 5375, 0x32, },
1485 { 78, 6375, 5250, 0x31, },
1486 { 79, 6250, 5125, 0x30, },
1487 { 80, 6125, 5000, 0x2f, },
1488 { 81, 6000, 4875, 0x2e, },
1489 { 82, 5875, 4750, 0x2d, },
1490 { 83, 5750, 4625, 0x2c, },
1491 { 84, 5625, 4500, 0x2b, },
1492 { 85, 5500, 4375, 0x2a, },
1493 { 86, 5375, 4250, 0x29, },
1494 { 87, 5250, 4125, 0x28, },
1495 { 88, 5125, 4000, 0x27, },
1496 { 89, 5000, 3875, 0x26, },
1497 { 90, 4875, 3750, 0x25, },
1498 { 91, 4750, 3625, 0x24, },
1499 { 92, 4625, 3500, 0x23, },
1500 { 93, 4500, 3375, 0x22, },
1501 { 94, 4375, 3250, 0x21, },
1502 { 95, 4250, 3125, 0x20, },
1503 { 96, 4125, 3000, 0x1f, },
1504 { 97, 4125, 3000, 0x1e, },
1505 { 98, 4125, 3000, 0x1d, },
1506 { 99, 4125, 3000, 0x1c, },
1507 { 100, 4125, 3000, 0x1b, },
1508 { 101, 4125, 3000, 0x1a, },
1509 { 102, 4125, 3000, 0x19, },
1510 { 103, 4125, 3000, 0x18, },
1511 { 104, 4125, 3000, 0x17, },
1512 { 105, 4125, 3000, 0x16, },
1513 { 106, 4125, 3000, 0x15, },
1514 { 107, 4125, 3000, 0x14, },
1515 { 108, 4125, 3000, 0x13, },
1516 { 109, 4125, 3000, 0x12, },
1517 { 110, 4125, 3000, 0x11, },
1518 { 111, 4125, 3000, 0x10, },
1519 { 112, 4125, 3000, 0x0f, },
1520 { 113, 4125, 3000, 0x0e, },
1521 { 114, 4125, 3000, 0x0d, },
1522 { 115, 4125, 3000, 0x0c, },
1523 { 116, 4125, 3000, 0x0b, },
1524 { 117, 4125, 3000, 0x0a, },
1525 { 118, 4125, 3000, 0x09, },
1526 { 119, 4125, 3000, 0x08, },
1527 { 120, 1125, 0, 0x07, },
1528 { 121, 1000, 0, 0x06, },
1529 { 122, 875, 0, 0x05, },
1530 { 123, 750, 0, 0x04, },
1531 { 124, 625, 0, 0x03, },
1532 { 125, 500, 0, 0x02, },
1533 { 126, 375, 0, 0x01, },
1534 { 127, 0, 0, 0x00, },
1544 static struct cparams cparams[] = {
1545 { 1, 1333, 301, 28664 },
1546 { 1, 1066, 294, 24460 },
1547 { 1, 800, 294, 25192 },
1548 { 0, 1333, 276, 27605 },
1549 { 0, 1066, 276, 27605 },
1550 { 0, 800, 231, 23784 },
1553 unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
1555 u64 total_count, diff, ret;
1556 u32 count1, count2, count3, m = 0, c = 0;
1557 unsigned long now = jiffies_to_msecs(jiffies), diff1;
1560 diff1 = now - dev_priv->last_time1;
1562 count1 = I915_READ(DMIEC);
1563 count2 = I915_READ(DDREC);
1564 count3 = I915_READ(CSIEC);
1566 total_count = count1 + count2 + count3;
1568 /* FIXME: handle per-counter overflow */
1569 if (total_count < dev_priv->last_count1) {
1570 diff = ~0UL - dev_priv->last_count1;
1571 diff += total_count;
1573 diff = total_count - dev_priv->last_count1;
1576 for (i = 0; i < ARRAY_SIZE(cparams); i++) {
1577 if (cparams[i].i == dev_priv->c_m &&
1578 cparams[i].t == dev_priv->r_t) {
1585 diff = div_u64(diff, diff1);
1586 ret = ((m * diff) + c);
1587 ret = div_u64(ret, 10);
1589 dev_priv->last_count1 = total_count;
1590 dev_priv->last_time1 = now;
1595 unsigned long i915_mch_val(struct drm_i915_private *dev_priv)
1597 unsigned long m, x, b;
1600 tsfs = I915_READ(TSFS);
1602 m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT);
1603 x = I915_READ8(TR1);
1605 b = tsfs & TSFS_INTR_MASK;
1607 return ((m * x) / 127) - b;
1610 static unsigned long pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid)
1612 unsigned long val = 0;
1615 for (i = 0; i < ARRAY_SIZE(v_table); i++) {
1616 if (v_table[i].pvid == pxvid) {
1617 if (IS_MOBILE(dev_priv->dev))
1618 val = v_table[i].vm;
1620 val = v_table[i].vd;
1627 void i915_update_gfx_val(struct drm_i915_private *dev_priv)
1629 struct timespec now, diff1;
1631 unsigned long diffms;
1634 getrawmonotonic(&now);
1635 diff1 = timespec_sub(now, dev_priv->last_time2);
1637 /* Don't divide by 0 */
1638 diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000;
1642 count = I915_READ(GFXEC);
1644 if (count < dev_priv->last_count2) {
1645 diff = ~0UL - dev_priv->last_count2;
1648 diff = count - dev_priv->last_count2;
1651 dev_priv->last_count2 = count;
1652 dev_priv->last_time2 = now;
1654 /* More magic constants... */
1656 diff = div_u64(diff, diffms * 10);
1657 dev_priv->gfx_power = diff;
1660 unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
1662 unsigned long t, corr, state1, corr2, state2;
1665 pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->cur_delay * 4));
1666 pxvid = (pxvid >> 24) & 0x7f;
1667 ext_v = pvid_to_extvid(dev_priv, pxvid);
1671 t = i915_mch_val(dev_priv);
1673 /* Revel in the empirically derived constants */
1675 /* Correction factor in 1/100000 units */
1677 corr = ((t * 2349) + 135940);
1679 corr = ((t * 964) + 29317);
1681 corr = ((t * 301) + 1004);
1683 corr = corr * ((150142 * state1) / 10000 - 78642);
1685 corr2 = (corr * dev_priv->corr);
1687 state2 = (corr2 * state1) / 10000;
1688 state2 /= 100; /* convert to mW */
1690 i915_update_gfx_val(dev_priv);
1692 return dev_priv->gfx_power + state2;
1695 /* Global for IPS driver to get at the current i915 device */
1696 static struct drm_i915_private *i915_mch_dev;
1698 * Lock protecting IPS related data structures
1700 * - dev_priv->max_delay
1701 * - dev_priv->min_delay
1703 * - dev_priv->gpu_busy
1705 static DEFINE_SPINLOCK(mchdev_lock);
1708 * i915_read_mch_val - return value for IPS use
1710 * Calculate and return a value for the IPS driver to use when deciding whether
1711 * we have thermal and power headroom to increase CPU or GPU power budget.
1713 unsigned long i915_read_mch_val(void)
1715 struct drm_i915_private *dev_priv;
1716 unsigned long chipset_val, graphics_val, ret = 0;
1718 spin_lock(&mchdev_lock);
1721 dev_priv = i915_mch_dev;
1723 chipset_val = i915_chipset_val(dev_priv);
1724 graphics_val = i915_gfx_val(dev_priv);
1726 ret = chipset_val + graphics_val;
1729 spin_unlock(&mchdev_lock);
1733 EXPORT_SYMBOL_GPL(i915_read_mch_val);
1736 * i915_gpu_raise - raise GPU frequency limit
1738 * Raise the limit; IPS indicates we have thermal headroom.
1740 bool i915_gpu_raise(void)
1742 struct drm_i915_private *dev_priv;
1745 spin_lock(&mchdev_lock);
1746 if (!i915_mch_dev) {
1750 dev_priv = i915_mch_dev;
1752 if (dev_priv->max_delay > dev_priv->fmax)
1753 dev_priv->max_delay--;
1756 spin_unlock(&mchdev_lock);
1760 EXPORT_SYMBOL_GPL(i915_gpu_raise);
1763 * i915_gpu_lower - lower GPU frequency limit
1765 * IPS indicates we're close to a thermal limit, so throttle back the GPU
1766 * frequency maximum.
1768 bool i915_gpu_lower(void)
1770 struct drm_i915_private *dev_priv;
1773 spin_lock(&mchdev_lock);
1774 if (!i915_mch_dev) {
1778 dev_priv = i915_mch_dev;
1780 if (dev_priv->max_delay < dev_priv->min_delay)
1781 dev_priv->max_delay++;
1784 spin_unlock(&mchdev_lock);
1788 EXPORT_SYMBOL_GPL(i915_gpu_lower);
1791 * i915_gpu_busy - indicate GPU business to IPS
1793 * Tell the IPS driver whether or not the GPU is busy.
1795 bool i915_gpu_busy(void)
1797 struct drm_i915_private *dev_priv;
1800 spin_lock(&mchdev_lock);
1803 dev_priv = i915_mch_dev;
1805 ret = dev_priv->busy;
1808 spin_unlock(&mchdev_lock);
1812 EXPORT_SYMBOL_GPL(i915_gpu_busy);
1815 * i915_gpu_turbo_disable - disable graphics turbo
1817 * Disable graphics turbo by resetting the max frequency and setting the
1818 * current frequency to the default.
1820 bool i915_gpu_turbo_disable(void)
1822 struct drm_i915_private *dev_priv;
1825 spin_lock(&mchdev_lock);
1826 if (!i915_mch_dev) {
1830 dev_priv = i915_mch_dev;
1832 dev_priv->max_delay = dev_priv->fstart;
1834 if (!ironlake_set_drps(dev_priv->dev, dev_priv->fstart))
1838 spin_unlock(&mchdev_lock);
1842 EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable);
1845 * i915_driver_load - setup chip and create an initial config
1847 * @flags: startup flags
1849 * The driver load routine has to do several things:
1850 * - drive output discovery via intel_modeset_init()
1851 * - initialize the memory manager
1852 * - allocate initial config memory
1853 * - setup the DRM framebuffer with the allocated memory
1855 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1857 struct drm_i915_private *dev_priv;
1858 int ret = 0, mmio_bar;
1861 /* i915 has 4 more counters */
1863 dev->types[6] = _DRM_STAT_IRQ;
1864 dev->types[7] = _DRM_STAT_PRIMARY;
1865 dev->types[8] = _DRM_STAT_SECONDARY;
1866 dev->types[9] = _DRM_STAT_DMA;
1868 dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
1869 if (dev_priv == NULL)
1872 dev->dev_private = (void *)dev_priv;
1873 dev_priv->dev = dev;
1874 dev_priv->info = (struct intel_device_info *) flags;
1876 if (i915_get_bridge_dev(dev)) {
1881 /* overlay on gen2 is broken and can't address above 1G */
1883 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
1885 mmio_bar = IS_GEN2(dev) ? 1 : 0;
1886 dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, 0);
1887 if (!dev_priv->regs) {
1888 DRM_ERROR("failed to map registers\n");
1893 dev_priv->mm.gtt = intel_gtt_get();
1894 if (!dev_priv->mm.gtt) {
1895 DRM_ERROR("Failed to initialize GTT\n");
1900 agp_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
1902 dev_priv->mm.gtt_mapping =
1903 io_mapping_create_wc(dev->agp->base, agp_size);
1904 if (dev_priv->mm.gtt_mapping == NULL) {
1909 /* Set up a WC MTRR for non-PAT systems. This is more common than
1910 * one would think, because the kernel disables PAT on first
1911 * generation Core chips because WC PAT gets overridden by a UC
1912 * MTRR if present. Even if a UC MTRR isn't present.
1914 dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
1916 MTRR_TYPE_WRCOMB, 1);
1917 if (dev_priv->mm.gtt_mtrr < 0) {
1918 DRM_INFO("MTRR allocation failed. Graphics "
1919 "performance may suffer.\n");
1922 /* The i915 workqueue is primarily used for batched retirement of
1923 * requests (and thus managing bo) once the task has been completed
1924 * by the GPU. i915_gem_retire_requests() is called directly when we
1925 * need high-priority retirement, such as waiting for an explicit
1928 * It is also used for periodic low-priority events, such as
1929 * idle-timers and recording error state.
1931 * All tasks on the workqueue are expected to acquire the dev mutex
1932 * so there is no point in running more than one instance of the
1933 * workqueue at any time: max_active = 1 and NON_REENTRANT.
1935 dev_priv->wq = alloc_workqueue("i915",
1936 WQ_UNBOUND | WQ_NON_REENTRANT,
1938 if (dev_priv->wq == NULL) {
1939 DRM_ERROR("Failed to create our workqueue.\n");
1944 /* enable GEM by default */
1945 dev_priv->has_gem = 1;
1947 if (dev_priv->has_gem == 0 &&
1948 drm_core_check_feature(dev, DRIVER_MODESET)) {
1949 DRM_ERROR("kernel modesetting requires GEM, disabling driver.\n");
1951 goto out_workqueue_free;
1954 dev->driver->get_vblank_counter = i915_get_vblank_counter;
1955 dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
1956 if (IS_G4X(dev) || IS_GEN5(dev) || IS_GEN6(dev)) {
1957 dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
1958 dev->driver->get_vblank_counter = gm45_get_vblank_counter;
1961 /* Try to make sure MCHBAR is enabled before poking at it */
1962 intel_setup_mchbar(dev);
1963 intel_setup_gmbus(dev);
1964 intel_opregion_setup(dev);
1966 /* Make sure the bios did its job and set up vital registers */
1967 intel_setup_bios(dev);
1972 if (!I915_NEED_GFX_HWS(dev)) {
1973 ret = i915_init_phys_hws(dev);
1975 goto out_gem_unload;
1978 if (IS_PINEVIEW(dev))
1979 i915_pineview_get_mem_freq(dev);
1980 else if (IS_GEN5(dev))
1981 i915_ironlake_get_mem_freq(dev);
1983 /* On the 945G/GM, the chipset reports the MSI capability on the
1984 * integrated graphics even though the support isn't actually there
1985 * according to the published specs. It doesn't appear to function
1986 * correctly in testing on 945G.
1987 * This may be a side effect of MSI having been made available for PEG
1988 * and the registers being closely associated.
1990 * According to chipset errata, on the 965GM, MSI interrupts may
1991 * be lost or delayed, but we use them anyways to avoid
1992 * stuck interrupts on some machines.
1994 if (!IS_I945G(dev) && !IS_I945GM(dev))
1995 pci_enable_msi(dev->pdev);
1997 spin_lock_init(&dev_priv->user_irq_lock);
1998 spin_lock_init(&dev_priv->error_lock);
1999 dev_priv->trace_irq_seqno = 0;
2001 ret = drm_vblank_init(dev, I915_NUM_PIPE);
2003 goto out_gem_unload;
2005 /* Start out suspended */
2006 dev_priv->mm.suspended = 1;
2008 intel_detect_pch(dev);
2010 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2011 ret = i915_load_modeset_init(dev);
2013 DRM_ERROR("failed to init modeset\n");
2014 goto out_gem_unload;
2018 /* Must be done after probing outputs */
2019 intel_opregion_init(dev);
2020 acpi_video_register();
2022 setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed,
2023 (unsigned long) dev);
2025 spin_lock(&mchdev_lock);
2026 i915_mch_dev = dev_priv;
2027 dev_priv->mchdev_lock = &mchdev_lock;
2028 spin_unlock(&mchdev_lock);
2033 if (dev->pdev->msi_enabled)
2034 pci_disable_msi(dev->pdev);
2036 intel_teardown_gmbus(dev);
2037 intel_teardown_mchbar(dev);
2039 destroy_workqueue(dev_priv->wq);
2041 io_mapping_free(dev_priv->mm.gtt_mapping);
2043 pci_iounmap(dev->pdev, dev_priv->regs);
2045 pci_dev_put(dev_priv->bridge_dev);
2051 int i915_driver_unload(struct drm_device *dev)
2053 struct drm_i915_private *dev_priv = dev->dev_private;
2056 spin_lock(&mchdev_lock);
2057 i915_mch_dev = NULL;
2058 spin_unlock(&mchdev_lock);
2060 if (dev_priv->mm.inactive_shrinker.shrink)
2061 unregister_shrinker(&dev_priv->mm.inactive_shrinker);
2063 mutex_lock(&dev->struct_mutex);
2064 ret = i915_gpu_idle(dev);
2066 DRM_ERROR("failed to idle hardware: %d\n", ret);
2067 mutex_unlock(&dev->struct_mutex);
2069 /* Cancel the retire work handler, which should be idle now. */
2070 cancel_delayed_work_sync(&dev_priv->mm.retire_work);
2072 io_mapping_free(dev_priv->mm.gtt_mapping);
2073 if (dev_priv->mm.gtt_mtrr >= 0) {
2074 mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
2075 dev->agp->agp_info.aper_size * 1024 * 1024);
2076 dev_priv->mm.gtt_mtrr = -1;
2079 acpi_video_unregister();
2081 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2082 intel_fbdev_fini(dev);
2083 intel_modeset_cleanup(dev);
2086 * free the memory space allocated for the child device
2087 * config parsed from VBT
2089 if (dev_priv->child_dev && dev_priv->child_dev_num) {
2090 kfree(dev_priv->child_dev);
2091 dev_priv->child_dev = NULL;
2092 dev_priv->child_dev_num = 0;
2095 vga_switcheroo_unregister_client(dev->pdev);
2096 vga_client_register(dev->pdev, NULL, NULL, NULL);
2099 /* Free error state after interrupts are fully disabled. */
2100 del_timer_sync(&dev_priv->hangcheck_timer);
2101 cancel_work_sync(&dev_priv->error_work);
2102 i915_destroy_error_state(dev);
2104 if (dev->pdev->msi_enabled)
2105 pci_disable_msi(dev->pdev);
2107 intel_opregion_fini(dev);
2109 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2110 /* Flush any outstanding unpin_work. */
2111 flush_workqueue(dev_priv->wq);
2113 i915_gem_free_all_phys_object(dev);
2115 mutex_lock(&dev->struct_mutex);
2116 i915_gem_cleanup_ringbuffer(dev);
2117 mutex_unlock(&dev->struct_mutex);
2118 if (I915_HAS_FBC(dev) && i915_powersave)
2119 i915_cleanup_compression(dev);
2120 drm_mm_takedown(&dev_priv->mm.stolen);
2122 intel_cleanup_overlay(dev);
2124 if (!I915_NEED_GFX_HWS(dev))
2128 if (dev_priv->regs != NULL)
2129 pci_iounmap(dev->pdev, dev_priv->regs);
2131 intel_teardown_gmbus(dev);
2132 intel_teardown_mchbar(dev);
2134 destroy_workqueue(dev_priv->wq);
2136 pci_dev_put(dev_priv->bridge_dev);
2137 kfree(dev->dev_private);
2142 int i915_driver_open(struct drm_device *dev, struct drm_file *file)
2144 struct drm_i915_file_private *file_priv;
2146 DRM_DEBUG_DRIVER("\n");
2147 file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
2151 file->driver_priv = file_priv;
2153 spin_lock_init(&file_priv->mm.lock);
2154 INIT_LIST_HEAD(&file_priv->mm.request_list);
2160 * i915_driver_lastclose - clean up after all DRM clients have exited
2163 * Take care of cleaning up after all DRM clients have exited. In the
2164 * mode setting case, we want to restore the kernel's initial mode (just
2165 * in case the last client left us in a bad state).
2167 * Additionally, in the non-mode setting case, we'll tear down the AGP
2168 * and DMA structures, since the kernel won't be using them, and clea
2171 void i915_driver_lastclose(struct drm_device * dev)
2173 drm_i915_private_t *dev_priv = dev->dev_private;
2175 if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
2176 drm_fb_helper_restore();
2177 vga_switcheroo_process_delayed_switch();
2181 i915_gem_lastclose(dev);
2183 if (dev_priv->agp_heap)
2184 i915_mem_takedown(&(dev_priv->agp_heap));
2186 i915_dma_cleanup(dev);
2189 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
2191 drm_i915_private_t *dev_priv = dev->dev_private;
2192 i915_gem_release(dev, file_priv);
2193 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2194 i915_mem_release(dev, file_priv, dev_priv->agp_heap);
2197 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
2199 struct drm_i915_file_private *file_priv = file->driver_priv;
2204 struct drm_ioctl_desc i915_ioctls[] = {
2205 DRM_IOCTL_DEF_DRV(I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2206 DRM_IOCTL_DEF_DRV(I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
2207 DRM_IOCTL_DEF_DRV(I915_FLIP, i915_flip_bufs, DRM_AUTH),
2208 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
2209 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
2210 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
2211 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH),
2212 DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2213 DRM_IOCTL_DEF_DRV(I915_ALLOC, i915_mem_alloc, DRM_AUTH),
2214 DRM_IOCTL_DEF_DRV(I915_FREE, i915_mem_free, DRM_AUTH),
2215 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2216 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
2217 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2218 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2219 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH),
2220 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
2221 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2222 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2223 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED),
2224 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED),
2225 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
2226 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
2227 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
2228 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED),
2229 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2230 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2231 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED),
2232 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED),
2233 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED),
2234 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED),
2235 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED),
2236 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED),
2237 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED),
2238 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED),
2239 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED),
2240 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED),
2241 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
2242 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),
2243 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
2244 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
2247 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
2250 * Determine if the device really is AGP or not.
2252 * All Intel graphics chipsets are treated as AGP, even if they are really
2255 * \param dev The device to be tested.
2258 * A value of 1 is always retured to indictate every i9x5 is AGP.
2260 int i915_driver_device_is_agp(struct drm_device * dev)