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.
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/drm_fb_helper.h>
34 #include "intel_drv.h"
35 #include <drm/i915_drm.h>
37 #include "i915_trace.h"
38 #include <linux/pci.h>
39 #include <linux/vgaarb.h>
40 #include <linux/acpi.h>
41 #include <linux/pnp.h>
42 #include <linux/vga_switcheroo.h>
43 #include <linux/slab.h>
44 #include <acpi/video.h>
47 #define LP_RING(d) (&((struct drm_i915_private *)(d))->ring[RCS])
49 #define BEGIN_LP_RING(n) \
50 intel_ring_begin(LP_RING(dev_priv), (n))
53 intel_ring_emit(LP_RING(dev_priv), x)
55 #define ADVANCE_LP_RING() \
56 intel_ring_advance(LP_RING(dev_priv))
59 * Lock test for when it's just for synchronization of ring access.
61 * In that case, we don't need to do it when GEM is initialized as nobody else
62 * has access to the ring.
64 #define RING_LOCK_TEST_WITH_RETURN(dev, file) do { \
65 if (LP_RING(dev->dev_private)->obj == NULL) \
66 LOCK_TEST_WITH_RETURN(dev, file); \
70 intel_read_legacy_status_page(struct drm_i915_private *dev_priv, int reg)
72 if (I915_NEED_GFX_HWS(dev_priv->dev))
73 return ioread32(dev_priv->dri1.gfx_hws_cpu_addr + reg);
75 return intel_read_status_page(LP_RING(dev_priv), reg);
78 #define READ_HWSP(dev_priv, reg) intel_read_legacy_status_page(dev_priv, reg)
79 #define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX)
80 #define I915_BREADCRUMB_INDEX 0x21
82 void i915_update_dri1_breadcrumb(struct drm_device *dev)
84 drm_i915_private_t *dev_priv = dev->dev_private;
85 struct drm_i915_master_private *master_priv;
87 if (dev->primary->master) {
88 master_priv = dev->primary->master->driver_priv;
89 if (master_priv->sarea_priv)
90 master_priv->sarea_priv->last_dispatch =
91 READ_BREADCRUMB(dev_priv);
95 static void i915_write_hws_pga(struct drm_device *dev)
97 drm_i915_private_t *dev_priv = dev->dev_private;
100 addr = dev_priv->status_page_dmah->busaddr;
101 if (INTEL_INFO(dev)->gen >= 4)
102 addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0;
103 I915_WRITE(HWS_PGA, addr);
107 * Sets up the hardware status page for devices that need a physical address
110 static int i915_init_phys_hws(struct drm_device *dev)
112 drm_i915_private_t *dev_priv = dev->dev_private;
114 /* Program Hardware Status Page */
115 dev_priv->status_page_dmah =
116 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE);
118 if (!dev_priv->status_page_dmah) {
119 DRM_ERROR("Can not allocate hardware status page\n");
123 memset_io((void __force __iomem *)dev_priv->status_page_dmah->vaddr,
126 i915_write_hws_pga(dev);
128 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
133 * Frees the hardware status page, whether it's a physical address or a virtual
134 * address set up by the X Server.
136 static void i915_free_hws(struct drm_device *dev)
138 drm_i915_private_t *dev_priv = dev->dev_private;
139 struct intel_ring_buffer *ring = LP_RING(dev_priv);
141 if (dev_priv->status_page_dmah) {
142 drm_pci_free(dev, dev_priv->status_page_dmah);
143 dev_priv->status_page_dmah = NULL;
146 if (ring->status_page.gfx_addr) {
147 ring->status_page.gfx_addr = 0;
148 iounmap(dev_priv->dri1.gfx_hws_cpu_addr);
151 /* Need to rewrite hardware status page */
152 I915_WRITE(HWS_PGA, 0x1ffff000);
155 void i915_kernel_lost_context(struct drm_device * dev)
157 drm_i915_private_t *dev_priv = dev->dev_private;
158 struct drm_i915_master_private *master_priv;
159 struct intel_ring_buffer *ring = LP_RING(dev_priv);
162 * We should never lose context on the ring with modesetting
163 * as we don't expose it to userspace
165 if (drm_core_check_feature(dev, DRIVER_MODESET))
168 ring->head = I915_READ_HEAD(ring) & HEAD_ADDR;
169 ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
170 ring->space = ring->head - (ring->tail + 8);
172 ring->space += ring->size;
174 if (!dev->primary->master)
177 master_priv = dev->primary->master->driver_priv;
178 if (ring->head == ring->tail && master_priv->sarea_priv)
179 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
182 static int i915_dma_cleanup(struct drm_device * dev)
184 drm_i915_private_t *dev_priv = dev->dev_private;
187 /* Make sure interrupts are disabled here because the uninstall ioctl
188 * may not have been called from userspace and after dev_private
189 * is freed, it's too late.
191 if (dev->irq_enabled)
192 drm_irq_uninstall(dev);
194 mutex_lock(&dev->struct_mutex);
195 for (i = 0; i < I915_NUM_RINGS; i++)
196 intel_cleanup_ring_buffer(&dev_priv->ring[i]);
197 mutex_unlock(&dev->struct_mutex);
199 /* Clear the HWS virtual address at teardown */
200 if (I915_NEED_GFX_HWS(dev))
206 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
208 drm_i915_private_t *dev_priv = dev->dev_private;
209 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
212 master_priv->sarea = drm_getsarea(dev);
213 if (master_priv->sarea) {
214 master_priv->sarea_priv = (drm_i915_sarea_t *)
215 ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
217 DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
220 if (init->ring_size != 0) {
221 if (LP_RING(dev_priv)->obj != NULL) {
222 i915_dma_cleanup(dev);
223 DRM_ERROR("Client tried to initialize ringbuffer in "
228 ret = intel_render_ring_init_dri(dev,
232 i915_dma_cleanup(dev);
237 dev_priv->cpp = init->cpp;
238 dev_priv->back_offset = init->back_offset;
239 dev_priv->front_offset = init->front_offset;
240 dev_priv->current_page = 0;
241 if (master_priv->sarea_priv)
242 master_priv->sarea_priv->pf_current_page = 0;
244 /* Allow hardware batchbuffers unless told otherwise.
246 dev_priv->dri1.allow_batchbuffer = 1;
251 static int i915_dma_resume(struct drm_device * dev)
253 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
254 struct intel_ring_buffer *ring = LP_RING(dev_priv);
256 DRM_DEBUG_DRIVER("%s\n", __func__);
258 if (ring->virtual_start == NULL) {
259 DRM_ERROR("can not ioremap virtual address for"
264 /* Program Hardware Status Page */
265 if (!ring->status_page.page_addr) {
266 DRM_ERROR("Can not find hardware status page\n");
269 DRM_DEBUG_DRIVER("hw status page @ %p\n",
270 ring->status_page.page_addr);
271 if (ring->status_page.gfx_addr != 0)
272 intel_ring_setup_status_page(ring);
274 i915_write_hws_pga(dev);
276 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
281 static int i915_dma_init(struct drm_device *dev, void *data,
282 struct drm_file *file_priv)
284 drm_i915_init_t *init = data;
287 if (drm_core_check_feature(dev, DRIVER_MODESET))
290 switch (init->func) {
292 retcode = i915_initialize(dev, init);
294 case I915_CLEANUP_DMA:
295 retcode = i915_dma_cleanup(dev);
297 case I915_RESUME_DMA:
298 retcode = i915_dma_resume(dev);
308 /* Implement basically the same security restrictions as hardware does
309 * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
311 * Most of the calculations below involve calculating the size of a
312 * particular instruction. It's important to get the size right as
313 * that tells us where the next instruction to check is. Any illegal
314 * instruction detected will be given a size of zero, which is a
315 * signal to abort the rest of the buffer.
317 static int validate_cmd(int cmd)
319 switch (((cmd >> 29) & 0x7)) {
321 switch ((cmd >> 23) & 0x3f) {
323 return 1; /* MI_NOOP */
325 return 1; /* MI_FLUSH */
327 return 0; /* disallow everything else */
331 return 0; /* reserved */
333 return (cmd & 0xff) + 2; /* 2d commands */
335 if (((cmd >> 24) & 0x1f) <= 0x18)
338 switch ((cmd >> 24) & 0x1f) {
342 switch ((cmd >> 16) & 0xff) {
344 return (cmd & 0x1f) + 2;
346 return (cmd & 0xf) + 2;
348 return (cmd & 0xffff) + 2;
352 return (cmd & 0xffff) + 1;
356 if ((cmd & (1 << 23)) == 0) /* inline vertices */
357 return (cmd & 0x1ffff) + 2;
358 else if (cmd & (1 << 17)) /* indirect random */
359 if ((cmd & 0xffff) == 0)
360 return 0; /* unknown length, too hard */
362 return (((cmd & 0xffff) + 1) / 2) + 1;
364 return 2; /* indirect sequential */
375 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
377 drm_i915_private_t *dev_priv = dev->dev_private;
380 if ((dwords+1) * sizeof(int) >= LP_RING(dev_priv)->size - 8)
383 for (i = 0; i < dwords;) {
384 int sz = validate_cmd(buffer[i]);
385 if (sz == 0 || i + sz > dwords)
390 ret = BEGIN_LP_RING((dwords+1)&~1);
394 for (i = 0; i < dwords; i++)
405 i915_emit_box(struct drm_device *dev,
406 struct drm_clip_rect *box,
409 struct drm_i915_private *dev_priv = dev->dev_private;
412 if (box->y2 <= box->y1 || box->x2 <= box->x1 ||
413 box->y2 <= 0 || box->x2 <= 0) {
414 DRM_ERROR("Bad box %d,%d..%d,%d\n",
415 box->x1, box->y1, box->x2, box->y2);
419 if (INTEL_INFO(dev)->gen >= 4) {
420 ret = BEGIN_LP_RING(4);
424 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
425 OUT_RING((box->x1 & 0xffff) | (box->y1 << 16));
426 OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16));
429 ret = BEGIN_LP_RING(6);
433 OUT_RING(GFX_OP_DRAWRECT_INFO);
435 OUT_RING((box->x1 & 0xffff) | (box->y1 << 16));
436 OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16));
445 /* XXX: Emitting the counter should really be moved to part of the IRQ
446 * emit. For now, do it in both places:
449 static void i915_emit_breadcrumb(struct drm_device *dev)
451 drm_i915_private_t *dev_priv = dev->dev_private;
452 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
455 if (dev_priv->counter > 0x7FFFFFFFUL)
456 dev_priv->counter = 0;
457 if (master_priv->sarea_priv)
458 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
460 if (BEGIN_LP_RING(4) == 0) {
461 OUT_RING(MI_STORE_DWORD_INDEX);
462 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
463 OUT_RING(dev_priv->counter);
469 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
470 drm_i915_cmdbuffer_t *cmd,
471 struct drm_clip_rect *cliprects,
474 int nbox = cmd->num_cliprects;
475 int i = 0, count, ret;
478 DRM_ERROR("alignment");
482 i915_kernel_lost_context(dev);
484 count = nbox ? nbox : 1;
486 for (i = 0; i < count; i++) {
488 ret = i915_emit_box(dev, &cliprects[i],
494 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
499 i915_emit_breadcrumb(dev);
503 static int i915_dispatch_batchbuffer(struct drm_device * dev,
504 drm_i915_batchbuffer_t * batch,
505 struct drm_clip_rect *cliprects)
507 struct drm_i915_private *dev_priv = dev->dev_private;
508 int nbox = batch->num_cliprects;
511 if ((batch->start | batch->used) & 0x7) {
512 DRM_ERROR("alignment");
516 i915_kernel_lost_context(dev);
518 count = nbox ? nbox : 1;
519 for (i = 0; i < count; i++) {
521 ret = i915_emit_box(dev, &cliprects[i],
522 batch->DR1, batch->DR4);
527 if (!IS_I830(dev) && !IS_845G(dev)) {
528 ret = BEGIN_LP_RING(2);
532 if (INTEL_INFO(dev)->gen >= 4) {
533 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
534 OUT_RING(batch->start);
536 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
537 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
540 ret = BEGIN_LP_RING(4);
544 OUT_RING(MI_BATCH_BUFFER);
545 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
546 OUT_RING(batch->start + batch->used - 4);
553 if (IS_G4X(dev) || IS_GEN5(dev)) {
554 if (BEGIN_LP_RING(2) == 0) {
555 OUT_RING(MI_FLUSH | MI_NO_WRITE_FLUSH | MI_INVALIDATE_ISP);
561 i915_emit_breadcrumb(dev);
565 static int i915_dispatch_flip(struct drm_device * dev)
567 drm_i915_private_t *dev_priv = dev->dev_private;
568 struct drm_i915_master_private *master_priv =
569 dev->primary->master->driver_priv;
572 if (!master_priv->sarea_priv)
575 DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
577 dev_priv->current_page,
578 master_priv->sarea_priv->pf_current_page);
580 i915_kernel_lost_context(dev);
582 ret = BEGIN_LP_RING(10);
586 OUT_RING(MI_FLUSH | MI_READ_FLUSH);
589 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
591 if (dev_priv->current_page == 0) {
592 OUT_RING(dev_priv->back_offset);
593 dev_priv->current_page = 1;
595 OUT_RING(dev_priv->front_offset);
596 dev_priv->current_page = 0;
600 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
605 master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
607 if (BEGIN_LP_RING(4) == 0) {
608 OUT_RING(MI_STORE_DWORD_INDEX);
609 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
610 OUT_RING(dev_priv->counter);
615 master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
619 static int i915_quiescent(struct drm_device *dev)
621 struct intel_ring_buffer *ring = LP_RING(dev->dev_private);
623 i915_kernel_lost_context(dev);
624 return intel_wait_ring_idle(ring);
627 static int i915_flush_ioctl(struct drm_device *dev, void *data,
628 struct drm_file *file_priv)
632 if (drm_core_check_feature(dev, DRIVER_MODESET))
635 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
637 mutex_lock(&dev->struct_mutex);
638 ret = i915_quiescent(dev);
639 mutex_unlock(&dev->struct_mutex);
644 static int i915_batchbuffer(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_batchbuffer_t *batch = data;
653 struct drm_clip_rect *cliprects = NULL;
655 if (drm_core_check_feature(dev, DRIVER_MODESET))
658 if (!dev_priv->dri1.allow_batchbuffer) {
659 DRM_ERROR("Batchbuffer ioctl disabled\n");
663 DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
664 batch->start, batch->used, batch->num_cliprects);
666 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
668 if (batch->num_cliprects < 0)
671 if (batch->num_cliprects) {
672 cliprects = kcalloc(batch->num_cliprects,
673 sizeof(struct drm_clip_rect),
675 if (cliprects == NULL)
678 ret = copy_from_user(cliprects, batch->cliprects,
679 batch->num_cliprects *
680 sizeof(struct drm_clip_rect));
687 mutex_lock(&dev->struct_mutex);
688 ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
689 mutex_unlock(&dev->struct_mutex);
692 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
700 static int i915_cmdbuffer(struct drm_device *dev, void *data,
701 struct drm_file *file_priv)
703 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
704 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
705 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
706 master_priv->sarea_priv;
707 drm_i915_cmdbuffer_t *cmdbuf = data;
708 struct drm_clip_rect *cliprects = NULL;
712 DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
713 cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
715 if (drm_core_check_feature(dev, DRIVER_MODESET))
718 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
720 if (cmdbuf->num_cliprects < 0)
723 batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
724 if (batch_data == NULL)
727 ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
730 goto fail_batch_free;
733 if (cmdbuf->num_cliprects) {
734 cliprects = kcalloc(cmdbuf->num_cliprects,
735 sizeof(struct drm_clip_rect), GFP_KERNEL);
736 if (cliprects == NULL) {
738 goto fail_batch_free;
741 ret = copy_from_user(cliprects, cmdbuf->cliprects,
742 cmdbuf->num_cliprects *
743 sizeof(struct drm_clip_rect));
750 mutex_lock(&dev->struct_mutex);
751 ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
752 mutex_unlock(&dev->struct_mutex);
754 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
759 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
769 static int i915_emit_irq(struct drm_device * dev)
771 drm_i915_private_t *dev_priv = dev->dev_private;
772 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
774 i915_kernel_lost_context(dev);
776 DRM_DEBUG_DRIVER("\n");
779 if (dev_priv->counter > 0x7FFFFFFFUL)
780 dev_priv->counter = 1;
781 if (master_priv->sarea_priv)
782 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
784 if (BEGIN_LP_RING(4) == 0) {
785 OUT_RING(MI_STORE_DWORD_INDEX);
786 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
787 OUT_RING(dev_priv->counter);
788 OUT_RING(MI_USER_INTERRUPT);
792 return dev_priv->counter;
795 static int i915_wait_irq(struct drm_device * dev, int irq_nr)
797 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
798 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
800 struct intel_ring_buffer *ring = LP_RING(dev_priv);
802 DRM_DEBUG_DRIVER("irq_nr=%d breadcrumb=%d\n", irq_nr,
803 READ_BREADCRUMB(dev_priv));
805 if (READ_BREADCRUMB(dev_priv) >= irq_nr) {
806 if (master_priv->sarea_priv)
807 master_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
811 if (master_priv->sarea_priv)
812 master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
814 if (ring->irq_get(ring)) {
815 DRM_WAIT_ON(ret, ring->irq_queue, 3 * DRM_HZ,
816 READ_BREADCRUMB(dev_priv) >= irq_nr);
818 } else if (wait_for(READ_BREADCRUMB(dev_priv) >= irq_nr, 3000))
822 DRM_ERROR("EBUSY -- rec: %d emitted: %d\n",
823 READ_BREADCRUMB(dev_priv), (int)dev_priv->counter);
829 /* Needs the lock as it touches the ring.
831 static int i915_irq_emit(struct drm_device *dev, void *data,
832 struct drm_file *file_priv)
834 drm_i915_private_t *dev_priv = dev->dev_private;
835 drm_i915_irq_emit_t *emit = data;
838 if (drm_core_check_feature(dev, DRIVER_MODESET))
841 if (!dev_priv || !LP_RING(dev_priv)->virtual_start) {
842 DRM_ERROR("called with no initialization\n");
846 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
848 mutex_lock(&dev->struct_mutex);
849 result = i915_emit_irq(dev);
850 mutex_unlock(&dev->struct_mutex);
852 if (DRM_COPY_TO_USER(emit->irq_seq, &result, sizeof(int))) {
853 DRM_ERROR("copy_to_user\n");
860 /* Doesn't need the hardware lock.
862 static int i915_irq_wait(struct drm_device *dev, void *data,
863 struct drm_file *file_priv)
865 drm_i915_private_t *dev_priv = dev->dev_private;
866 drm_i915_irq_wait_t *irqwait = data;
868 if (drm_core_check_feature(dev, DRIVER_MODESET))
872 DRM_ERROR("called with no initialization\n");
876 return i915_wait_irq(dev, irqwait->irq_seq);
879 static int i915_vblank_pipe_get(struct drm_device *dev, void *data,
880 struct drm_file *file_priv)
882 drm_i915_private_t *dev_priv = dev->dev_private;
883 drm_i915_vblank_pipe_t *pipe = data;
885 if (drm_core_check_feature(dev, DRIVER_MODESET))
889 DRM_ERROR("called with no initialization\n");
893 pipe->pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B;
899 * Schedule buffer swap at given vertical blank.
901 static int i915_vblank_swap(struct drm_device *dev, void *data,
902 struct drm_file *file_priv)
904 /* The delayed swap mechanism was fundamentally racy, and has been
905 * removed. The model was that the client requested a delayed flip/swap
906 * from the kernel, then waited for vblank before continuing to perform
907 * rendering. The problem was that the kernel might wake the client
908 * up before it dispatched the vblank swap (since the lock has to be
909 * held while touching the ringbuffer), in which case the client would
910 * clear and start the next frame before the swap occurred, and
911 * flicker would occur in addition to likely missing the vblank.
913 * In the absence of this ioctl, userland falls back to a correct path
914 * of waiting for a vblank, then dispatching the swap on its own.
915 * Context switching to userland and back is plenty fast enough for
916 * meeting the requirements of vblank swapping.
921 static int i915_flip_bufs(struct drm_device *dev, void *data,
922 struct drm_file *file_priv)
926 if (drm_core_check_feature(dev, DRIVER_MODESET))
929 DRM_DEBUG_DRIVER("%s\n", __func__);
931 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
933 mutex_lock(&dev->struct_mutex);
934 ret = i915_dispatch_flip(dev);
935 mutex_unlock(&dev->struct_mutex);
940 static int i915_getparam(struct drm_device *dev, void *data,
941 struct drm_file *file_priv)
943 drm_i915_private_t *dev_priv = dev->dev_private;
944 drm_i915_getparam_t *param = data;
948 DRM_ERROR("called with no initialization\n");
952 switch (param->param) {
953 case I915_PARAM_IRQ_ACTIVE:
954 value = dev->pdev->irq ? 1 : 0;
956 case I915_PARAM_ALLOW_BATCHBUFFER:
957 value = dev_priv->dri1.allow_batchbuffer ? 1 : 0;
959 case I915_PARAM_LAST_DISPATCH:
960 value = READ_BREADCRUMB(dev_priv);
962 case I915_PARAM_CHIPSET_ID:
963 value = dev->pci_device;
965 case I915_PARAM_HAS_GEM:
968 case I915_PARAM_NUM_FENCES_AVAIL:
969 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
971 case I915_PARAM_HAS_OVERLAY:
972 value = dev_priv->overlay ? 1 : 0;
974 case I915_PARAM_HAS_PAGEFLIPPING:
977 case I915_PARAM_HAS_EXECBUF2:
981 case I915_PARAM_HAS_BSD:
982 value = intel_ring_initialized(&dev_priv->ring[VCS]);
984 case I915_PARAM_HAS_BLT:
985 value = intel_ring_initialized(&dev_priv->ring[BCS]);
987 case I915_PARAM_HAS_RELAXED_FENCING:
990 case I915_PARAM_HAS_COHERENT_RINGS:
993 case I915_PARAM_HAS_EXEC_CONSTANTS:
994 value = INTEL_INFO(dev)->gen >= 4;
996 case I915_PARAM_HAS_RELAXED_DELTA:
999 case I915_PARAM_HAS_GEN7_SOL_RESET:
1002 case I915_PARAM_HAS_LLC:
1003 value = HAS_LLC(dev);
1005 case I915_PARAM_HAS_ALIASING_PPGTT:
1006 value = dev_priv->mm.aliasing_ppgtt ? 1 : 0;
1008 case I915_PARAM_HAS_WAIT_TIMEOUT:
1012 DRM_DEBUG_DRIVER("Unknown parameter %d\n",
1017 if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
1018 DRM_ERROR("DRM_COPY_TO_USER failed\n");
1025 static int i915_setparam(struct drm_device *dev, void *data,
1026 struct drm_file *file_priv)
1028 drm_i915_private_t *dev_priv = dev->dev_private;
1029 drm_i915_setparam_t *param = data;
1032 DRM_ERROR("called with no initialization\n");
1036 switch (param->param) {
1037 case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
1039 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
1041 case I915_SETPARAM_ALLOW_BATCHBUFFER:
1042 dev_priv->dri1.allow_batchbuffer = param->value ? 1 : 0;
1044 case I915_SETPARAM_NUM_USED_FENCES:
1045 if (param->value > dev_priv->num_fence_regs ||
1048 /* Userspace can use first N regs */
1049 dev_priv->fence_reg_start = param->value;
1052 DRM_DEBUG_DRIVER("unknown parameter %d\n",
1060 static int i915_set_status_page(struct drm_device *dev, void *data,
1061 struct drm_file *file_priv)
1063 drm_i915_private_t *dev_priv = dev->dev_private;
1064 drm_i915_hws_addr_t *hws = data;
1065 struct intel_ring_buffer *ring = LP_RING(dev_priv);
1067 if (drm_core_check_feature(dev, DRIVER_MODESET))
1070 if (!I915_NEED_GFX_HWS(dev))
1074 DRM_ERROR("called with no initialization\n");
1078 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1079 WARN(1, "tried to set status page when mode setting active\n");
1083 DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
1085 ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12);
1087 dev_priv->dri1.gfx_hws_cpu_addr =
1088 ioremap_wc(dev_priv->mm.gtt_base_addr + hws->addr, 4096);
1089 if (dev_priv->dri1.gfx_hws_cpu_addr == NULL) {
1090 i915_dma_cleanup(dev);
1091 ring->status_page.gfx_addr = 0;
1092 DRM_ERROR("can not ioremap virtual address for"
1093 " G33 hw status page\n");
1097 memset_io(dev_priv->dri1.gfx_hws_cpu_addr, 0, PAGE_SIZE);
1098 I915_WRITE(HWS_PGA, ring->status_page.gfx_addr);
1100 DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
1101 ring->status_page.gfx_addr);
1102 DRM_DEBUG_DRIVER("load hws at %p\n",
1103 ring->status_page.page_addr);
1107 static int i915_get_bridge_dev(struct drm_device *dev)
1109 struct drm_i915_private *dev_priv = dev->dev_private;
1111 dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
1112 if (!dev_priv->bridge_dev) {
1113 DRM_ERROR("bridge device not found\n");
1119 #define MCHBAR_I915 0x44
1120 #define MCHBAR_I965 0x48
1121 #define MCHBAR_SIZE (4*4096)
1123 #define DEVEN_REG 0x54
1124 #define DEVEN_MCHBAR_EN (1 << 28)
1126 /* Allocate space for the MCH regs if needed, return nonzero on error */
1128 intel_alloc_mchbar_resource(struct drm_device *dev)
1130 drm_i915_private_t *dev_priv = dev->dev_private;
1131 int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1132 u32 temp_lo, temp_hi = 0;
1136 if (INTEL_INFO(dev)->gen >= 4)
1137 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
1138 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
1139 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
1141 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
1144 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
1148 /* Get some space for it */
1149 dev_priv->mch_res.name = "i915 MCHBAR";
1150 dev_priv->mch_res.flags = IORESOURCE_MEM;
1151 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
1153 MCHBAR_SIZE, MCHBAR_SIZE,
1155 0, pcibios_align_resource,
1156 dev_priv->bridge_dev);
1158 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
1159 dev_priv->mch_res.start = 0;
1163 if (INTEL_INFO(dev)->gen >= 4)
1164 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
1165 upper_32_bits(dev_priv->mch_res.start));
1167 pci_write_config_dword(dev_priv->bridge_dev, reg,
1168 lower_32_bits(dev_priv->mch_res.start));
1172 /* Setup MCHBAR if possible, return true if we should disable it again */
1174 intel_setup_mchbar(struct drm_device *dev)
1176 drm_i915_private_t *dev_priv = dev->dev_private;
1177 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1181 dev_priv->mchbar_need_disable = false;
1183 if (IS_I915G(dev) || IS_I915GM(dev)) {
1184 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1185 enabled = !!(temp & DEVEN_MCHBAR_EN);
1187 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1191 /* If it's already enabled, don't have to do anything */
1195 if (intel_alloc_mchbar_resource(dev))
1198 dev_priv->mchbar_need_disable = true;
1200 /* Space is allocated or reserved, so enable it. */
1201 if (IS_I915G(dev) || IS_I915GM(dev)) {
1202 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
1203 temp | DEVEN_MCHBAR_EN);
1205 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1206 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
1211 intel_teardown_mchbar(struct drm_device *dev)
1213 drm_i915_private_t *dev_priv = dev->dev_private;
1214 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1217 if (dev_priv->mchbar_need_disable) {
1218 if (IS_I915G(dev) || IS_I915GM(dev)) {
1219 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1220 temp &= ~DEVEN_MCHBAR_EN;
1221 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
1223 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1225 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
1229 if (dev_priv->mch_res.start)
1230 release_resource(&dev_priv->mch_res);
1233 /* true = enable decode, false = disable decoder */
1234 static unsigned int i915_vga_set_decode(void *cookie, bool state)
1236 struct drm_device *dev = cookie;
1238 intel_modeset_vga_set_state(dev, state);
1240 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1241 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1243 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1246 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1248 struct drm_device *dev = pci_get_drvdata(pdev);
1249 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
1250 if (state == VGA_SWITCHEROO_ON) {
1251 pr_info("switched on\n");
1252 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1253 /* i915 resume handler doesn't set to D0 */
1254 pci_set_power_state(dev->pdev, PCI_D0);
1256 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1258 pr_err("switched off\n");
1259 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1260 i915_suspend(dev, pmm);
1261 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1265 static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
1267 struct drm_device *dev = pci_get_drvdata(pdev);
1270 spin_lock(&dev->count_lock);
1271 can_switch = (dev->open_count == 0);
1272 spin_unlock(&dev->count_lock);
1276 static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
1277 .set_gpu_state = i915_switcheroo_set_state,
1279 .can_switch = i915_switcheroo_can_switch,
1282 static int i915_load_modeset_init(struct drm_device *dev)
1284 struct drm_i915_private *dev_priv = dev->dev_private;
1287 ret = intel_parse_bios(dev);
1289 DRM_INFO("failed to find VBIOS tables\n");
1291 /* If we have > 1 VGA cards, then we need to arbitrate access
1292 * to the common VGA resources.
1294 * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
1295 * then we do not take part in VGA arbitration and the
1296 * vga_client_register() fails with -ENODEV.
1298 ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
1299 if (ret && ret != -ENODEV)
1302 intel_register_dsm_handler();
1304 ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops);
1306 goto cleanup_vga_client;
1308 /* Initialise stolen first so that we may reserve preallocated
1309 * objects for the BIOS to KMS transition.
1311 ret = i915_gem_init_stolen(dev);
1313 goto cleanup_vga_switcheroo;
1315 intel_modeset_init(dev);
1317 ret = i915_gem_init(dev);
1319 goto cleanup_gem_stolen;
1321 intel_modeset_gem_init(dev);
1323 ret = drm_irq_install(dev);
1327 /* Always safe in the mode setting case. */
1328 /* FIXME: do pre/post-mode set stuff in core KMS code */
1329 dev->vblank_disable_allowed = 1;
1331 ret = intel_fbdev_init(dev);
1335 drm_kms_helper_poll_init(dev);
1337 /* We're off and running w/KMS */
1338 dev_priv->mm.suspended = 0;
1343 drm_irq_uninstall(dev);
1345 mutex_lock(&dev->struct_mutex);
1346 i915_gem_cleanup_ringbuffer(dev);
1347 mutex_unlock(&dev->struct_mutex);
1348 i915_gem_cleanup_aliasing_ppgtt(dev);
1350 i915_gem_cleanup_stolen(dev);
1351 cleanup_vga_switcheroo:
1352 vga_switcheroo_unregister_client(dev->pdev);
1354 vga_client_register(dev->pdev, NULL, NULL, NULL);
1359 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1361 struct drm_i915_master_private *master_priv;
1363 master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1367 master->driver_priv = master_priv;
1371 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1373 struct drm_i915_master_private *master_priv = master->driver_priv;
1380 master->driver_priv = NULL;
1384 i915_mtrr_setup(struct drm_i915_private *dev_priv, unsigned long base,
1387 dev_priv->mm.gtt_mtrr = -1;
1389 #if defined(CONFIG_X86_PAT)
1394 /* Set up a WC MTRR for non-PAT systems. This is more common than
1395 * one would think, because the kernel disables PAT on first
1396 * generation Core chips because WC PAT gets overridden by a UC
1397 * MTRR if present. Even if a UC MTRR isn't present.
1399 dev_priv->mm.gtt_mtrr = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1);
1400 if (dev_priv->mm.gtt_mtrr < 0) {
1401 DRM_INFO("MTRR allocation failed. Graphics "
1402 "performance may suffer.\n");
1406 static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
1408 struct apertures_struct *ap;
1409 struct pci_dev *pdev = dev_priv->dev->pdev;
1412 ap = alloc_apertures(1);
1416 ap->ranges[0].base = dev_priv->mm.gtt->gma_bus_addr;
1417 ap->ranges[0].size =
1418 dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
1420 pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
1422 remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
1428 * i915_driver_load - setup chip and create an initial config
1430 * @flags: startup flags
1432 * The driver load routine has to do several things:
1433 * - drive output discovery via intel_modeset_init()
1434 * - initialize the memory manager
1435 * - allocate initial config memory
1436 * - setup the DRM framebuffer with the allocated memory
1438 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1440 struct drm_i915_private *dev_priv;
1441 struct intel_device_info *info;
1442 int ret = 0, mmio_bar;
1443 uint32_t aperture_size;
1445 info = (struct intel_device_info *) flags;
1447 /* Refuse to load on gen6+ without kms enabled. */
1448 if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET))
1452 /* i915 has 4 more counters */
1454 dev->types[6] = _DRM_STAT_IRQ;
1455 dev->types[7] = _DRM_STAT_PRIMARY;
1456 dev->types[8] = _DRM_STAT_SECONDARY;
1457 dev->types[9] = _DRM_STAT_DMA;
1459 dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
1460 if (dev_priv == NULL)
1463 dev->dev_private = (void *)dev_priv;
1464 dev_priv->dev = dev;
1465 dev_priv->info = info;
1467 if (i915_get_bridge_dev(dev)) {
1472 ret = intel_gmch_probe(dev_priv->bridge_dev, dev->pdev, NULL);
1474 DRM_ERROR("failed to set up gmch\n");
1479 dev_priv->mm.gtt = intel_gtt_get();
1480 if (!dev_priv->mm.gtt) {
1481 DRM_ERROR("Failed to initialize GTT\n");
1486 i915_kick_out_firmware_fb(dev_priv);
1488 pci_set_master(dev->pdev);
1490 /* overlay on gen2 is broken and can't address above 1G */
1492 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
1494 /* 965GM sometimes incorrectly writes to hardware status page (HWS)
1495 * using 32bit addressing, overwriting memory if HWS is located
1498 * The documentation also mentions an issue with undefined
1499 * behaviour if any general state is accessed within a page above 4GB,
1500 * which also needs to be handled carefully.
1502 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1503 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(32));
1505 mmio_bar = IS_GEN2(dev) ? 1 : 0;
1506 dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, 0);
1507 if (!dev_priv->regs) {
1508 DRM_ERROR("failed to map registers\n");
1513 aperture_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
1514 dev_priv->mm.gtt_base_addr = dev_priv->mm.gtt->gma_bus_addr;
1516 dev_priv->mm.gtt_mapping =
1517 io_mapping_create_wc(dev_priv->mm.gtt_base_addr,
1519 if (dev_priv->mm.gtt_mapping == NULL) {
1524 i915_mtrr_setup(dev_priv, dev_priv->mm.gtt_base_addr,
1527 /* The i915 workqueue is primarily used for batched retirement of
1528 * requests (and thus managing bo) once the task has been completed
1529 * by the GPU. i915_gem_retire_requests() is called directly when we
1530 * need high-priority retirement, such as waiting for an explicit
1533 * It is also used for periodic low-priority events, such as
1534 * idle-timers and recording error state.
1536 * All tasks on the workqueue are expected to acquire the dev mutex
1537 * so there is no point in running more than one instance of the
1538 * workqueue at any time: max_active = 1 and NON_REENTRANT.
1540 dev_priv->wq = alloc_workqueue("i915",
1541 WQ_UNBOUND | WQ_NON_REENTRANT,
1543 if (dev_priv->wq == NULL) {
1544 DRM_ERROR("Failed to create our workqueue.\n");
1549 /* This must be called before any calls to HAS_PCH_* */
1550 intel_detect_pch(dev);
1552 intel_irq_init(dev);
1555 /* Try to make sure MCHBAR is enabled before poking at it */
1556 intel_setup_mchbar(dev);
1557 intel_setup_gmbus(dev);
1558 intel_opregion_setup(dev);
1560 /* Make sure the bios did its job and set up vital registers */
1561 intel_setup_bios(dev);
1566 if (!I915_NEED_GFX_HWS(dev)) {
1567 ret = i915_init_phys_hws(dev);
1569 goto out_gem_unload;
1572 /* On the 945G/GM, the chipset reports the MSI capability on the
1573 * integrated graphics even though the support isn't actually there
1574 * according to the published specs. It doesn't appear to function
1575 * correctly in testing on 945G.
1576 * This may be a side effect of MSI having been made available for PEG
1577 * and the registers being closely associated.
1579 * According to chipset errata, on the 965GM, MSI interrupts may
1580 * be lost or delayed, but we use them anyways to avoid
1581 * stuck interrupts on some machines.
1583 if (!IS_I945G(dev) && !IS_I945GM(dev))
1584 pci_enable_msi(dev->pdev);
1586 spin_lock_init(&dev_priv->irq_lock);
1587 spin_lock_init(&dev_priv->error_lock);
1588 spin_lock_init(&dev_priv->rps_lock);
1589 spin_lock_init(&dev_priv->dpio_lock);
1591 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
1592 dev_priv->num_pipe = 3;
1593 else if (IS_MOBILE(dev) || !IS_GEN2(dev))
1594 dev_priv->num_pipe = 2;
1596 dev_priv->num_pipe = 1;
1598 ret = drm_vblank_init(dev, dev_priv->num_pipe);
1600 goto out_gem_unload;
1602 /* Start out suspended */
1603 dev_priv->mm.suspended = 1;
1605 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1606 ret = i915_load_modeset_init(dev);
1608 DRM_ERROR("failed to init modeset\n");
1609 goto out_gem_unload;
1613 i915_setup_sysfs(dev);
1615 /* Must be done after probing outputs */
1616 intel_opregion_init(dev);
1617 acpi_video_register();
1619 setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed,
1620 (unsigned long) dev);
1623 intel_gpu_ips_init(dev_priv);
1628 if (dev_priv->mm.inactive_shrinker.shrink)
1629 unregister_shrinker(&dev_priv->mm.inactive_shrinker);
1631 if (dev->pdev->msi_enabled)
1632 pci_disable_msi(dev->pdev);
1634 intel_teardown_gmbus(dev);
1635 intel_teardown_mchbar(dev);
1636 destroy_workqueue(dev_priv->wq);
1638 if (dev_priv->mm.gtt_mtrr >= 0) {
1639 mtrr_del(dev_priv->mm.gtt_mtrr,
1640 dev_priv->mm.gtt_base_addr,
1642 dev_priv->mm.gtt_mtrr = -1;
1644 io_mapping_free(dev_priv->mm.gtt_mapping);
1646 pci_iounmap(dev->pdev, dev_priv->regs);
1648 intel_gmch_remove();
1650 pci_dev_put(dev_priv->bridge_dev);
1656 int i915_driver_unload(struct drm_device *dev)
1658 struct drm_i915_private *dev_priv = dev->dev_private;
1661 intel_gpu_ips_teardown();
1663 i915_teardown_sysfs(dev);
1665 if (dev_priv->mm.inactive_shrinker.shrink)
1666 unregister_shrinker(&dev_priv->mm.inactive_shrinker);
1668 mutex_lock(&dev->struct_mutex);
1669 ret = i915_gpu_idle(dev);
1671 DRM_ERROR("failed to idle hardware: %d\n", ret);
1672 i915_gem_retire_requests(dev);
1673 mutex_unlock(&dev->struct_mutex);
1675 /* Cancel the retire work handler, which should be idle now. */
1676 cancel_delayed_work_sync(&dev_priv->mm.retire_work);
1678 io_mapping_free(dev_priv->mm.gtt_mapping);
1679 if (dev_priv->mm.gtt_mtrr >= 0) {
1680 mtrr_del(dev_priv->mm.gtt_mtrr,
1681 dev_priv->mm.gtt_base_addr,
1682 dev_priv->mm.gtt->gtt_mappable_entries * PAGE_SIZE);
1683 dev_priv->mm.gtt_mtrr = -1;
1686 acpi_video_unregister();
1688 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1689 intel_fbdev_fini(dev);
1690 intel_modeset_cleanup(dev);
1693 * free the memory space allocated for the child device
1694 * config parsed from VBT
1696 if (dev_priv->child_dev && dev_priv->child_dev_num) {
1697 kfree(dev_priv->child_dev);
1698 dev_priv->child_dev = NULL;
1699 dev_priv->child_dev_num = 0;
1702 vga_switcheroo_unregister_client(dev->pdev);
1703 vga_client_register(dev->pdev, NULL, NULL, NULL);
1706 /* Free error state after interrupts are fully disabled. */
1707 del_timer_sync(&dev_priv->hangcheck_timer);
1708 cancel_work_sync(&dev_priv->error_work);
1709 i915_destroy_error_state(dev);
1711 if (dev->pdev->msi_enabled)
1712 pci_disable_msi(dev->pdev);
1714 intel_opregion_fini(dev);
1716 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1717 /* Flush any outstanding unpin_work. */
1718 flush_workqueue(dev_priv->wq);
1720 mutex_lock(&dev->struct_mutex);
1721 i915_gem_free_all_phys_object(dev);
1722 i915_gem_cleanup_ringbuffer(dev);
1723 i915_gem_context_fini(dev);
1724 mutex_unlock(&dev->struct_mutex);
1725 i915_gem_cleanup_aliasing_ppgtt(dev);
1726 i915_gem_cleanup_stolen(dev);
1727 drm_mm_takedown(&dev_priv->mm.stolen);
1729 intel_cleanup_overlay(dev);
1731 if (!I915_NEED_GFX_HWS(dev))
1735 if (dev_priv->regs != NULL)
1736 pci_iounmap(dev->pdev, dev_priv->regs);
1738 intel_teardown_gmbus(dev);
1739 intel_teardown_mchbar(dev);
1741 destroy_workqueue(dev_priv->wq);
1743 pci_dev_put(dev_priv->bridge_dev);
1744 kfree(dev->dev_private);
1749 int i915_driver_open(struct drm_device *dev, struct drm_file *file)
1751 struct drm_i915_file_private *file_priv;
1753 DRM_DEBUG_DRIVER("\n");
1754 file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
1758 file->driver_priv = file_priv;
1760 spin_lock_init(&file_priv->mm.lock);
1761 INIT_LIST_HEAD(&file_priv->mm.request_list);
1763 idr_init(&file_priv->context_idr);
1769 * i915_driver_lastclose - clean up after all DRM clients have exited
1772 * Take care of cleaning up after all DRM clients have exited. In the
1773 * mode setting case, we want to restore the kernel's initial mode (just
1774 * in case the last client left us in a bad state).
1776 * Additionally, in the non-mode setting case, we'll tear down the GTT
1777 * and DMA structures, since the kernel won't be using them, and clea
1780 void i915_driver_lastclose(struct drm_device * dev)
1782 drm_i915_private_t *dev_priv = dev->dev_private;
1784 /* On gen6+ we refuse to init without kms enabled, but then the drm core
1785 * goes right around and calls lastclose. Check for this and don't clean
1790 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1791 intel_fb_restore_mode(dev);
1792 vga_switcheroo_process_delayed_switch();
1796 i915_gem_lastclose(dev);
1798 i915_dma_cleanup(dev);
1801 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1803 i915_gem_context_close(dev, file_priv);
1804 i915_gem_release(dev, file_priv);
1807 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
1809 struct drm_i915_file_private *file_priv = file->driver_priv;
1814 struct drm_ioctl_desc i915_ioctls[] = {
1815 DRM_IOCTL_DEF_DRV(I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1816 DRM_IOCTL_DEF_DRV(I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
1817 DRM_IOCTL_DEF_DRV(I915_FLIP, i915_flip_bufs, DRM_AUTH),
1818 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
1819 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
1820 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
1821 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH),
1822 DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1823 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
1824 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
1825 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1826 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
1827 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1828 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1829 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH),
1830 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1831 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1832 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1833 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED),
1834 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED),
1835 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1836 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1837 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
1838 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED),
1839 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1840 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1841 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED),
1842 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED),
1843 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED),
1844 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED),
1845 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED),
1846 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED),
1847 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED),
1848 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED),
1849 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED),
1850 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED),
1851 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
1852 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),
1853 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1854 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1855 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1856 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, intel_sprite_get_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1857 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_UNLOCKED),
1858 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_UNLOCKED),
1859 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_UNLOCKED),
1862 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1865 * This is really ugly: Because old userspace abused the linux agp interface to
1866 * manage the gtt, we need to claim that all intel devices are agp. For
1867 * otherwise the drm core refuses to initialize the agp support code.
1869 int i915_driver_device_is_agp(struct drm_device * dev)