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>
46 #define LP_RING(d) (&((struct drm_i915_private *)(d))->ring[RCS])
48 #define BEGIN_LP_RING(n) \
49 intel_ring_begin(LP_RING(dev_priv), (n))
52 intel_ring_emit(LP_RING(dev_priv), x)
54 #define ADVANCE_LP_RING() \
55 __intel_ring_advance(LP_RING(dev_priv))
58 * Lock test for when it's just for synchronization of ring access.
60 * In that case, we don't need to do it when GEM is initialized as nobody else
61 * has access to the ring.
63 #define RING_LOCK_TEST_WITH_RETURN(dev, file) do { \
64 if (LP_RING(dev->dev_private)->obj == NULL) \
65 LOCK_TEST_WITH_RETURN(dev, file); \
69 intel_read_legacy_status_page(struct drm_i915_private *dev_priv, int reg)
71 if (I915_NEED_GFX_HWS(dev_priv->dev))
72 return ioread32(dev_priv->dri1.gfx_hws_cpu_addr + reg);
74 return intel_read_status_page(LP_RING(dev_priv), reg);
77 #define READ_HWSP(dev_priv, reg) intel_read_legacy_status_page(dev_priv, reg)
78 #define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX)
79 #define I915_BREADCRUMB_INDEX 0x21
81 void i915_update_dri1_breadcrumb(struct drm_device *dev)
83 drm_i915_private_t *dev_priv = dev->dev_private;
84 struct drm_i915_master_private *master_priv;
87 * The dri breadcrumb update races against the drm master disappearing.
88 * Instead of trying to fix this (this is by far not the only ums issue)
89 * just don't do the update in kms mode.
91 if (drm_core_check_feature(dev, DRIVER_MODESET))
94 if (dev->primary->master) {
95 master_priv = dev->primary->master->driver_priv;
96 if (master_priv->sarea_priv)
97 master_priv->sarea_priv->last_dispatch =
98 READ_BREADCRUMB(dev_priv);
102 static void i915_write_hws_pga(struct drm_device *dev)
104 drm_i915_private_t *dev_priv = dev->dev_private;
107 addr = dev_priv->status_page_dmah->busaddr;
108 if (INTEL_INFO(dev)->gen >= 4)
109 addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0;
110 I915_WRITE(HWS_PGA, addr);
114 * Frees the hardware status page, whether it's a physical address or a virtual
115 * address set up by the X Server.
117 static void i915_free_hws(struct drm_device *dev)
119 drm_i915_private_t *dev_priv = dev->dev_private;
120 struct intel_ring_buffer *ring = LP_RING(dev_priv);
122 if (dev_priv->status_page_dmah) {
123 drm_pci_free(dev, dev_priv->status_page_dmah);
124 dev_priv->status_page_dmah = NULL;
127 if (ring->status_page.gfx_addr) {
128 ring->status_page.gfx_addr = 0;
129 iounmap(dev_priv->dri1.gfx_hws_cpu_addr);
132 /* Need to rewrite hardware status page */
133 I915_WRITE(HWS_PGA, 0x1ffff000);
136 void i915_kernel_lost_context(struct drm_device * dev)
138 drm_i915_private_t *dev_priv = dev->dev_private;
139 struct drm_i915_master_private *master_priv;
140 struct intel_ring_buffer *ring = LP_RING(dev_priv);
143 * We should never lose context on the ring with modesetting
144 * as we don't expose it to userspace
146 if (drm_core_check_feature(dev, DRIVER_MODESET))
149 ring->head = I915_READ_HEAD(ring) & HEAD_ADDR;
150 ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
151 ring->space = ring->head - (ring->tail + I915_RING_FREE_SPACE);
153 ring->space += ring->size;
155 if (!dev->primary->master)
158 master_priv = dev->primary->master->driver_priv;
159 if (ring->head == ring->tail && master_priv->sarea_priv)
160 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
163 static int i915_dma_cleanup(struct drm_device * dev)
165 drm_i915_private_t *dev_priv = dev->dev_private;
168 /* Make sure interrupts are disabled here because the uninstall ioctl
169 * may not have been called from userspace and after dev_private
170 * is freed, it's too late.
172 if (dev->irq_enabled)
173 drm_irq_uninstall(dev);
175 mutex_lock(&dev->struct_mutex);
176 for (i = 0; i < I915_NUM_RINGS; i++)
177 intel_cleanup_ring_buffer(&dev_priv->ring[i]);
178 mutex_unlock(&dev->struct_mutex);
180 /* Clear the HWS virtual address at teardown */
181 if (I915_NEED_GFX_HWS(dev))
187 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
189 drm_i915_private_t *dev_priv = dev->dev_private;
190 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
193 master_priv->sarea = drm_getsarea(dev);
194 if (master_priv->sarea) {
195 master_priv->sarea_priv = (drm_i915_sarea_t *)
196 ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
198 DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
201 if (init->ring_size != 0) {
202 if (LP_RING(dev_priv)->obj != NULL) {
203 i915_dma_cleanup(dev);
204 DRM_ERROR("Client tried to initialize ringbuffer in "
209 ret = intel_render_ring_init_dri(dev,
213 i915_dma_cleanup(dev);
218 dev_priv->dri1.cpp = init->cpp;
219 dev_priv->dri1.back_offset = init->back_offset;
220 dev_priv->dri1.front_offset = init->front_offset;
221 dev_priv->dri1.current_page = 0;
222 if (master_priv->sarea_priv)
223 master_priv->sarea_priv->pf_current_page = 0;
225 /* Allow hardware batchbuffers unless told otherwise.
227 dev_priv->dri1.allow_batchbuffer = 1;
232 static int i915_dma_resume(struct drm_device * dev)
234 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
235 struct intel_ring_buffer *ring = LP_RING(dev_priv);
237 DRM_DEBUG_DRIVER("%s\n", __func__);
239 if (ring->virtual_start == NULL) {
240 DRM_ERROR("can not ioremap virtual address for"
245 /* Program Hardware Status Page */
246 if (!ring->status_page.page_addr) {
247 DRM_ERROR("Can not find hardware status page\n");
250 DRM_DEBUG_DRIVER("hw status page @ %p\n",
251 ring->status_page.page_addr);
252 if (ring->status_page.gfx_addr != 0)
253 intel_ring_setup_status_page(ring);
255 i915_write_hws_pga(dev);
257 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
262 static int i915_dma_init(struct drm_device *dev, void *data,
263 struct drm_file *file_priv)
265 drm_i915_init_t *init = data;
268 if (drm_core_check_feature(dev, DRIVER_MODESET))
271 switch (init->func) {
273 retcode = i915_initialize(dev, init);
275 case I915_CLEANUP_DMA:
276 retcode = i915_dma_cleanup(dev);
278 case I915_RESUME_DMA:
279 retcode = i915_dma_resume(dev);
289 /* Implement basically the same security restrictions as hardware does
290 * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
292 * Most of the calculations below involve calculating the size of a
293 * particular instruction. It's important to get the size right as
294 * that tells us where the next instruction to check is. Any illegal
295 * instruction detected will be given a size of zero, which is a
296 * signal to abort the rest of the buffer.
298 static int validate_cmd(int cmd)
300 switch (((cmd >> 29) & 0x7)) {
302 switch ((cmd >> 23) & 0x3f) {
304 return 1; /* MI_NOOP */
306 return 1; /* MI_FLUSH */
308 return 0; /* disallow everything else */
312 return 0; /* reserved */
314 return (cmd & 0xff) + 2; /* 2d commands */
316 if (((cmd >> 24) & 0x1f) <= 0x18)
319 switch ((cmd >> 24) & 0x1f) {
323 switch ((cmd >> 16) & 0xff) {
325 return (cmd & 0x1f) + 2;
327 return (cmd & 0xf) + 2;
329 return (cmd & 0xffff) + 2;
333 return (cmd & 0xffff) + 1;
337 if ((cmd & (1 << 23)) == 0) /* inline vertices */
338 return (cmd & 0x1ffff) + 2;
339 else if (cmd & (1 << 17)) /* indirect random */
340 if ((cmd & 0xffff) == 0)
341 return 0; /* unknown length, too hard */
343 return (((cmd & 0xffff) + 1) / 2) + 1;
345 return 2; /* indirect sequential */
356 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
358 drm_i915_private_t *dev_priv = dev->dev_private;
361 if ((dwords+1) * sizeof(int) >= LP_RING(dev_priv)->size - 8)
364 for (i = 0; i < dwords;) {
365 int sz = validate_cmd(buffer[i]);
366 if (sz == 0 || i + sz > dwords)
371 ret = BEGIN_LP_RING((dwords+1)&~1);
375 for (i = 0; i < dwords; i++)
386 i915_emit_box(struct drm_device *dev,
387 struct drm_clip_rect *box,
390 struct drm_i915_private *dev_priv = dev->dev_private;
393 if (box->y2 <= box->y1 || box->x2 <= box->x1 ||
394 box->y2 <= 0 || box->x2 <= 0) {
395 DRM_ERROR("Bad box %d,%d..%d,%d\n",
396 box->x1, box->y1, box->x2, box->y2);
400 if (INTEL_INFO(dev)->gen >= 4) {
401 ret = BEGIN_LP_RING(4);
405 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
406 OUT_RING((box->x1 & 0xffff) | (box->y1 << 16));
407 OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16));
410 ret = BEGIN_LP_RING(6);
414 OUT_RING(GFX_OP_DRAWRECT_INFO);
416 OUT_RING((box->x1 & 0xffff) | (box->y1 << 16));
417 OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16));
426 /* XXX: Emitting the counter should really be moved to part of the IRQ
427 * emit. For now, do it in both places:
430 static void i915_emit_breadcrumb(struct drm_device *dev)
432 drm_i915_private_t *dev_priv = dev->dev_private;
433 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
435 dev_priv->dri1.counter++;
436 if (dev_priv->dri1.counter > 0x7FFFFFFFUL)
437 dev_priv->dri1.counter = 0;
438 if (master_priv->sarea_priv)
439 master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter;
441 if (BEGIN_LP_RING(4) == 0) {
442 OUT_RING(MI_STORE_DWORD_INDEX);
443 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
444 OUT_RING(dev_priv->dri1.counter);
450 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
451 drm_i915_cmdbuffer_t *cmd,
452 struct drm_clip_rect *cliprects,
455 int nbox = cmd->num_cliprects;
456 int i = 0, count, ret;
459 DRM_ERROR("alignment");
463 i915_kernel_lost_context(dev);
465 count = nbox ? nbox : 1;
467 for (i = 0; i < count; i++) {
469 ret = i915_emit_box(dev, &cliprects[i],
475 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
480 i915_emit_breadcrumb(dev);
484 static int i915_dispatch_batchbuffer(struct drm_device * dev,
485 drm_i915_batchbuffer_t * batch,
486 struct drm_clip_rect *cliprects)
488 struct drm_i915_private *dev_priv = dev->dev_private;
489 int nbox = batch->num_cliprects;
492 if ((batch->start | batch->used) & 0x7) {
493 DRM_ERROR("alignment");
497 i915_kernel_lost_context(dev);
499 count = nbox ? nbox : 1;
500 for (i = 0; i < count; i++) {
502 ret = i915_emit_box(dev, &cliprects[i],
503 batch->DR1, batch->DR4);
508 if (!IS_I830(dev) && !IS_845G(dev)) {
509 ret = BEGIN_LP_RING(2);
513 if (INTEL_INFO(dev)->gen >= 4) {
514 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
515 OUT_RING(batch->start);
517 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
518 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
521 ret = BEGIN_LP_RING(4);
525 OUT_RING(MI_BATCH_BUFFER);
526 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
527 OUT_RING(batch->start + batch->used - 4);
534 if (IS_G4X(dev) || IS_GEN5(dev)) {
535 if (BEGIN_LP_RING(2) == 0) {
536 OUT_RING(MI_FLUSH | MI_NO_WRITE_FLUSH | MI_INVALIDATE_ISP);
542 i915_emit_breadcrumb(dev);
546 static int i915_dispatch_flip(struct drm_device * dev)
548 drm_i915_private_t *dev_priv = dev->dev_private;
549 struct drm_i915_master_private *master_priv =
550 dev->primary->master->driver_priv;
553 if (!master_priv->sarea_priv)
556 DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
558 dev_priv->dri1.current_page,
559 master_priv->sarea_priv->pf_current_page);
561 i915_kernel_lost_context(dev);
563 ret = BEGIN_LP_RING(10);
567 OUT_RING(MI_FLUSH | MI_READ_FLUSH);
570 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
572 if (dev_priv->dri1.current_page == 0) {
573 OUT_RING(dev_priv->dri1.back_offset);
574 dev_priv->dri1.current_page = 1;
576 OUT_RING(dev_priv->dri1.front_offset);
577 dev_priv->dri1.current_page = 0;
581 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
586 master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter++;
588 if (BEGIN_LP_RING(4) == 0) {
589 OUT_RING(MI_STORE_DWORD_INDEX);
590 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
591 OUT_RING(dev_priv->dri1.counter);
596 master_priv->sarea_priv->pf_current_page = dev_priv->dri1.current_page;
600 static int i915_quiescent(struct drm_device *dev)
602 i915_kernel_lost_context(dev);
603 return intel_ring_idle(LP_RING(dev->dev_private));
606 static int i915_flush_ioctl(struct drm_device *dev, void *data,
607 struct drm_file *file_priv)
611 if (drm_core_check_feature(dev, DRIVER_MODESET))
614 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
616 mutex_lock(&dev->struct_mutex);
617 ret = i915_quiescent(dev);
618 mutex_unlock(&dev->struct_mutex);
623 static int i915_batchbuffer(struct drm_device *dev, void *data,
624 struct drm_file *file_priv)
626 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
627 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
628 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
629 master_priv->sarea_priv;
630 drm_i915_batchbuffer_t *batch = data;
632 struct drm_clip_rect *cliprects = NULL;
634 if (drm_core_check_feature(dev, DRIVER_MODESET))
637 if (!dev_priv->dri1.allow_batchbuffer) {
638 DRM_ERROR("Batchbuffer ioctl disabled\n");
642 DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
643 batch->start, batch->used, batch->num_cliprects);
645 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
647 if (batch->num_cliprects < 0)
650 if (batch->num_cliprects) {
651 cliprects = kcalloc(batch->num_cliprects,
654 if (cliprects == NULL)
657 ret = copy_from_user(cliprects, batch->cliprects,
658 batch->num_cliprects *
659 sizeof(struct drm_clip_rect));
666 mutex_lock(&dev->struct_mutex);
667 ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
668 mutex_unlock(&dev->struct_mutex);
671 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
679 static int i915_cmdbuffer(struct drm_device *dev, void *data,
680 struct drm_file *file_priv)
682 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
683 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
684 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
685 master_priv->sarea_priv;
686 drm_i915_cmdbuffer_t *cmdbuf = data;
687 struct drm_clip_rect *cliprects = NULL;
691 DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
692 cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
694 if (drm_core_check_feature(dev, DRIVER_MODESET))
697 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
699 if (cmdbuf->num_cliprects < 0)
702 batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
703 if (batch_data == NULL)
706 ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
709 goto fail_batch_free;
712 if (cmdbuf->num_cliprects) {
713 cliprects = kcalloc(cmdbuf->num_cliprects,
714 sizeof(*cliprects), GFP_KERNEL);
715 if (cliprects == NULL) {
717 goto fail_batch_free;
720 ret = copy_from_user(cliprects, cmdbuf->cliprects,
721 cmdbuf->num_cliprects *
722 sizeof(struct drm_clip_rect));
729 mutex_lock(&dev->struct_mutex);
730 ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
731 mutex_unlock(&dev->struct_mutex);
733 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
738 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
748 static int i915_emit_irq(struct drm_device * dev)
750 drm_i915_private_t *dev_priv = dev->dev_private;
751 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
753 i915_kernel_lost_context(dev);
755 DRM_DEBUG_DRIVER("\n");
757 dev_priv->dri1.counter++;
758 if (dev_priv->dri1.counter > 0x7FFFFFFFUL)
759 dev_priv->dri1.counter = 1;
760 if (master_priv->sarea_priv)
761 master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter;
763 if (BEGIN_LP_RING(4) == 0) {
764 OUT_RING(MI_STORE_DWORD_INDEX);
765 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
766 OUT_RING(dev_priv->dri1.counter);
767 OUT_RING(MI_USER_INTERRUPT);
771 return dev_priv->dri1.counter;
774 static int i915_wait_irq(struct drm_device * dev, int irq_nr)
776 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
777 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
779 struct intel_ring_buffer *ring = LP_RING(dev_priv);
781 DRM_DEBUG_DRIVER("irq_nr=%d breadcrumb=%d\n", irq_nr,
782 READ_BREADCRUMB(dev_priv));
784 if (READ_BREADCRUMB(dev_priv) >= irq_nr) {
785 if (master_priv->sarea_priv)
786 master_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
790 if (master_priv->sarea_priv)
791 master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
793 if (ring->irq_get(ring)) {
794 DRM_WAIT_ON(ret, ring->irq_queue, 3 * DRM_HZ,
795 READ_BREADCRUMB(dev_priv) >= irq_nr);
797 } else if (wait_for(READ_BREADCRUMB(dev_priv) >= irq_nr, 3000))
801 DRM_ERROR("EBUSY -- rec: %d emitted: %d\n",
802 READ_BREADCRUMB(dev_priv), (int)dev_priv->dri1.counter);
808 /* Needs the lock as it touches the ring.
810 static int i915_irq_emit(struct drm_device *dev, void *data,
811 struct drm_file *file_priv)
813 drm_i915_private_t *dev_priv = dev->dev_private;
814 drm_i915_irq_emit_t *emit = data;
817 if (drm_core_check_feature(dev, DRIVER_MODESET))
820 if (!dev_priv || !LP_RING(dev_priv)->virtual_start) {
821 DRM_ERROR("called with no initialization\n");
825 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
827 mutex_lock(&dev->struct_mutex);
828 result = i915_emit_irq(dev);
829 mutex_unlock(&dev->struct_mutex);
831 if (DRM_COPY_TO_USER(emit->irq_seq, &result, sizeof(int))) {
832 DRM_ERROR("copy_to_user\n");
839 /* Doesn't need the hardware lock.
841 static int i915_irq_wait(struct drm_device *dev, void *data,
842 struct drm_file *file_priv)
844 drm_i915_private_t *dev_priv = dev->dev_private;
845 drm_i915_irq_wait_t *irqwait = data;
847 if (drm_core_check_feature(dev, DRIVER_MODESET))
851 DRM_ERROR("called with no initialization\n");
855 return i915_wait_irq(dev, irqwait->irq_seq);
858 static int i915_vblank_pipe_get(struct drm_device *dev, void *data,
859 struct drm_file *file_priv)
861 drm_i915_private_t *dev_priv = dev->dev_private;
862 drm_i915_vblank_pipe_t *pipe = data;
864 if (drm_core_check_feature(dev, DRIVER_MODESET))
868 DRM_ERROR("called with no initialization\n");
872 pipe->pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B;
878 * Schedule buffer swap at given vertical blank.
880 static int i915_vblank_swap(struct drm_device *dev, void *data,
881 struct drm_file *file_priv)
883 /* The delayed swap mechanism was fundamentally racy, and has been
884 * removed. The model was that the client requested a delayed flip/swap
885 * from the kernel, then waited for vblank before continuing to perform
886 * rendering. The problem was that the kernel might wake the client
887 * up before it dispatched the vblank swap (since the lock has to be
888 * held while touching the ringbuffer), in which case the client would
889 * clear and start the next frame before the swap occurred, and
890 * flicker would occur in addition to likely missing the vblank.
892 * In the absence of this ioctl, userland falls back to a correct path
893 * of waiting for a vblank, then dispatching the swap on its own.
894 * Context switching to userland and back is plenty fast enough for
895 * meeting the requirements of vblank swapping.
900 static int i915_flip_bufs(struct drm_device *dev, void *data,
901 struct drm_file *file_priv)
905 if (drm_core_check_feature(dev, DRIVER_MODESET))
908 DRM_DEBUG_DRIVER("%s\n", __func__);
910 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
912 mutex_lock(&dev->struct_mutex);
913 ret = i915_dispatch_flip(dev);
914 mutex_unlock(&dev->struct_mutex);
919 static int i915_getparam(struct drm_device *dev, void *data,
920 struct drm_file *file_priv)
922 drm_i915_private_t *dev_priv = dev->dev_private;
923 drm_i915_getparam_t *param = data;
927 DRM_ERROR("called with no initialization\n");
931 switch (param->param) {
932 case I915_PARAM_IRQ_ACTIVE:
933 value = dev->pdev->irq ? 1 : 0;
935 case I915_PARAM_ALLOW_BATCHBUFFER:
936 value = dev_priv->dri1.allow_batchbuffer ? 1 : 0;
938 case I915_PARAM_LAST_DISPATCH:
939 value = READ_BREADCRUMB(dev_priv);
941 case I915_PARAM_CHIPSET_ID:
942 value = dev->pdev->device;
944 case I915_PARAM_HAS_GEM:
947 case I915_PARAM_NUM_FENCES_AVAIL:
948 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
950 case I915_PARAM_HAS_OVERLAY:
951 value = dev_priv->overlay ? 1 : 0;
953 case I915_PARAM_HAS_PAGEFLIPPING:
956 case I915_PARAM_HAS_EXECBUF2:
960 case I915_PARAM_HAS_BSD:
961 value = intel_ring_initialized(&dev_priv->ring[VCS]);
963 case I915_PARAM_HAS_BLT:
964 value = intel_ring_initialized(&dev_priv->ring[BCS]);
966 case I915_PARAM_HAS_VEBOX:
967 value = intel_ring_initialized(&dev_priv->ring[VECS]);
969 case I915_PARAM_HAS_RELAXED_FENCING:
972 case I915_PARAM_HAS_COHERENT_RINGS:
975 case I915_PARAM_HAS_EXEC_CONSTANTS:
976 value = INTEL_INFO(dev)->gen >= 4;
978 case I915_PARAM_HAS_RELAXED_DELTA:
981 case I915_PARAM_HAS_GEN7_SOL_RESET:
984 case I915_PARAM_HAS_LLC:
985 value = HAS_LLC(dev);
987 case I915_PARAM_HAS_WT:
990 case I915_PARAM_HAS_ALIASING_PPGTT:
991 value = dev_priv->mm.aliasing_ppgtt ? 1 : 0;
993 case I915_PARAM_HAS_WAIT_TIMEOUT:
996 case I915_PARAM_HAS_SEMAPHORES:
997 value = i915_semaphore_is_enabled(dev);
999 case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
1002 case I915_PARAM_HAS_SECURE_BATCHES:
1003 value = capable(CAP_SYS_ADMIN);
1005 case I915_PARAM_HAS_PINNED_BATCHES:
1008 case I915_PARAM_HAS_EXEC_NO_RELOC:
1011 case I915_PARAM_HAS_EXEC_HANDLE_LUT:
1015 DRM_DEBUG("Unknown parameter %d\n", param->param);
1019 if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
1020 DRM_ERROR("DRM_COPY_TO_USER failed\n");
1027 static int i915_setparam(struct drm_device *dev, void *data,
1028 struct drm_file *file_priv)
1030 drm_i915_private_t *dev_priv = dev->dev_private;
1031 drm_i915_setparam_t *param = data;
1034 DRM_ERROR("called with no initialization\n");
1038 switch (param->param) {
1039 case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
1041 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
1043 case I915_SETPARAM_ALLOW_BATCHBUFFER:
1044 dev_priv->dri1.allow_batchbuffer = param->value ? 1 : 0;
1046 case I915_SETPARAM_NUM_USED_FENCES:
1047 if (param->value > dev_priv->num_fence_regs ||
1050 /* Userspace can use first N regs */
1051 dev_priv->fence_reg_start = param->value;
1054 DRM_DEBUG_DRIVER("unknown parameter %d\n",
1062 static int i915_set_status_page(struct drm_device *dev, void *data,
1063 struct drm_file *file_priv)
1065 drm_i915_private_t *dev_priv = dev->dev_private;
1066 drm_i915_hws_addr_t *hws = data;
1067 struct intel_ring_buffer *ring;
1069 if (drm_core_check_feature(dev, DRIVER_MODESET))
1072 if (!I915_NEED_GFX_HWS(dev))
1076 DRM_ERROR("called with no initialization\n");
1080 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1081 WARN(1, "tried to set status page when mode setting active\n");
1085 DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
1087 ring = LP_RING(dev_priv);
1088 ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12);
1090 dev_priv->dri1.gfx_hws_cpu_addr =
1091 ioremap_wc(dev_priv->gtt.mappable_base + hws->addr, 4096);
1092 if (dev_priv->dri1.gfx_hws_cpu_addr == NULL) {
1093 i915_dma_cleanup(dev);
1094 ring->status_page.gfx_addr = 0;
1095 DRM_ERROR("can not ioremap virtual address for"
1096 " G33 hw status page\n");
1100 memset_io(dev_priv->dri1.gfx_hws_cpu_addr, 0, PAGE_SIZE);
1101 I915_WRITE(HWS_PGA, ring->status_page.gfx_addr);
1103 DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
1104 ring->status_page.gfx_addr);
1105 DRM_DEBUG_DRIVER("load hws at %p\n",
1106 ring->status_page.page_addr);
1110 static int i915_get_bridge_dev(struct drm_device *dev)
1112 struct drm_i915_private *dev_priv = dev->dev_private;
1114 dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
1115 if (!dev_priv->bridge_dev) {
1116 DRM_ERROR("bridge device not found\n");
1122 #define MCHBAR_I915 0x44
1123 #define MCHBAR_I965 0x48
1124 #define MCHBAR_SIZE (4*4096)
1126 #define DEVEN_REG 0x54
1127 #define DEVEN_MCHBAR_EN (1 << 28)
1129 /* Allocate space for the MCH regs if needed, return nonzero on error */
1131 intel_alloc_mchbar_resource(struct drm_device *dev)
1133 drm_i915_private_t *dev_priv = dev->dev_private;
1134 int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1135 u32 temp_lo, temp_hi = 0;
1139 if (INTEL_INFO(dev)->gen >= 4)
1140 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
1141 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
1142 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
1144 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
1147 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
1151 /* Get some space for it */
1152 dev_priv->mch_res.name = "i915 MCHBAR";
1153 dev_priv->mch_res.flags = IORESOURCE_MEM;
1154 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
1156 MCHBAR_SIZE, MCHBAR_SIZE,
1158 0, pcibios_align_resource,
1159 dev_priv->bridge_dev);
1161 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
1162 dev_priv->mch_res.start = 0;
1166 if (INTEL_INFO(dev)->gen >= 4)
1167 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
1168 upper_32_bits(dev_priv->mch_res.start));
1170 pci_write_config_dword(dev_priv->bridge_dev, reg,
1171 lower_32_bits(dev_priv->mch_res.start));
1175 /* Setup MCHBAR if possible, return true if we should disable it again */
1177 intel_setup_mchbar(struct drm_device *dev)
1179 drm_i915_private_t *dev_priv = dev->dev_private;
1180 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1184 dev_priv->mchbar_need_disable = false;
1186 if (IS_I915G(dev) || IS_I915GM(dev)) {
1187 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1188 enabled = !!(temp & DEVEN_MCHBAR_EN);
1190 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1194 /* If it's already enabled, don't have to do anything */
1198 if (intel_alloc_mchbar_resource(dev))
1201 dev_priv->mchbar_need_disable = true;
1203 /* Space is allocated or reserved, so enable it. */
1204 if (IS_I915G(dev) || IS_I915GM(dev)) {
1205 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
1206 temp | DEVEN_MCHBAR_EN);
1208 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1209 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
1214 intel_teardown_mchbar(struct drm_device *dev)
1216 drm_i915_private_t *dev_priv = dev->dev_private;
1217 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1220 if (dev_priv->mchbar_need_disable) {
1221 if (IS_I915G(dev) || IS_I915GM(dev)) {
1222 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1223 temp &= ~DEVEN_MCHBAR_EN;
1224 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
1226 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1228 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
1232 if (dev_priv->mch_res.start)
1233 release_resource(&dev_priv->mch_res);
1236 /* true = enable decode, false = disable decoder */
1237 static unsigned int i915_vga_set_decode(void *cookie, bool state)
1239 struct drm_device *dev = cookie;
1241 intel_modeset_vga_set_state(dev, state);
1243 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1244 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1246 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1249 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1251 struct drm_device *dev = pci_get_drvdata(pdev);
1252 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
1253 if (state == VGA_SWITCHEROO_ON) {
1254 pr_info("switched on\n");
1255 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1256 /* i915 resume handler doesn't set to D0 */
1257 pci_set_power_state(dev->pdev, PCI_D0);
1259 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1261 pr_err("switched off\n");
1262 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1263 i915_suspend(dev, pmm);
1264 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1268 static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
1270 struct drm_device *dev = pci_get_drvdata(pdev);
1273 spin_lock(&dev->count_lock);
1274 can_switch = (dev->open_count == 0);
1275 spin_unlock(&dev->count_lock);
1279 static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
1280 .set_gpu_state = i915_switcheroo_set_state,
1282 .can_switch = i915_switcheroo_can_switch,
1285 static int i915_load_modeset_init(struct drm_device *dev)
1287 struct drm_i915_private *dev_priv = dev->dev_private;
1290 ret = intel_parse_bios(dev);
1292 DRM_INFO("failed to find VBIOS tables\n");
1294 /* If we have > 1 VGA cards, then we need to arbitrate access
1295 * to the common VGA resources.
1297 * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
1298 * then we do not take part in VGA arbitration and the
1299 * vga_client_register() fails with -ENODEV.
1301 ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
1302 if (ret && ret != -ENODEV)
1305 intel_register_dsm_handler();
1307 ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops, false);
1309 goto cleanup_vga_client;
1311 /* Initialise stolen first so that we may reserve preallocated
1312 * objects for the BIOS to KMS transition.
1314 ret = i915_gem_init_stolen(dev);
1316 goto cleanup_vga_switcheroo;
1318 ret = drm_irq_install(dev);
1320 goto cleanup_gem_stolen;
1322 intel_power_domains_init_hw(dev);
1324 /* Important: The output setup functions called by modeset_init need
1325 * working irqs for e.g. gmbus and dp aux transfers. */
1326 intel_modeset_init(dev);
1328 ret = i915_gem_init(dev);
1332 INIT_WORK(&dev_priv->console_resume_work, intel_console_resume);
1334 intel_modeset_gem_init(dev);
1336 /* Always safe in the mode setting case. */
1337 /* FIXME: do pre/post-mode set stuff in core KMS code */
1338 dev->vblank_disable_allowed = true;
1339 if (INTEL_INFO(dev)->num_pipes == 0) {
1340 intel_display_power_put(dev, POWER_DOMAIN_VGA);
1344 ret = intel_fbdev_init(dev);
1348 /* Only enable hotplug handling once the fbdev is fully set up. */
1349 intel_hpd_init(dev);
1352 * Some ports require correctly set-up hpd registers for detection to
1353 * work properly (leading to ghost connected connector status), e.g. VGA
1354 * on gm45. Hence we can only set up the initial fbdev config after hpd
1355 * irqs are fully enabled. Now we should scan for the initial config
1356 * only once hotplug handling is enabled, but due to screwed-up locking
1357 * around kms/fbdev init we can't protect the fdbev initial config
1358 * scanning against hotplug events. Hence do this first and ignore the
1359 * tiny window where we will loose hotplug notifactions.
1361 intel_fbdev_initial_config(dev);
1363 /* Only enable hotplug handling once the fbdev is fully set up. */
1364 dev_priv->enable_hotplug_processing = true;
1366 drm_kms_helper_poll_init(dev);
1371 mutex_lock(&dev->struct_mutex);
1372 i915_gem_cleanup_ringbuffer(dev);
1373 i915_gem_context_fini(dev);
1374 mutex_unlock(&dev->struct_mutex);
1375 i915_gem_cleanup_aliasing_ppgtt(dev);
1376 drm_mm_takedown(&dev_priv->gtt.base.mm);
1378 intel_display_power_put(dev, POWER_DOMAIN_VGA);
1379 drm_irq_uninstall(dev);
1381 i915_gem_cleanup_stolen(dev);
1382 cleanup_vga_switcheroo:
1383 vga_switcheroo_unregister_client(dev->pdev);
1385 vga_client_register(dev->pdev, NULL, NULL, NULL);
1390 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1392 struct drm_i915_master_private *master_priv;
1394 master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1398 master->driver_priv = master_priv;
1402 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1404 struct drm_i915_master_private *master_priv = master->driver_priv;
1411 master->driver_priv = NULL;
1414 #ifdef CONFIG_DRM_I915_FBDEV
1415 static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
1417 struct apertures_struct *ap;
1418 struct pci_dev *pdev = dev_priv->dev->pdev;
1421 ap = alloc_apertures(1);
1425 ap->ranges[0].base = dev_priv->gtt.mappable_base;
1426 ap->ranges[0].size = dev_priv->gtt.mappable_end;
1429 pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
1431 remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
1436 static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
1441 static void i915_dump_device_info(struct drm_i915_private *dev_priv)
1443 const struct intel_device_info *info = dev_priv->info;
1445 #define PRINT_S(name) "%s"
1447 #define PRINT_FLAG(name) info->name ? #name "," : ""
1449 DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x flags="
1450 DEV_INFO_FOR_EACH_FLAG(PRINT_S, SEP_EMPTY),
1452 dev_priv->dev->pdev->device,
1453 DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_COMMA));
1461 * i915_driver_load - setup chip and create an initial config
1463 * @flags: startup flags
1465 * The driver load routine has to do several things:
1466 * - drive output discovery via intel_modeset_init()
1467 * - initialize the memory manager
1468 * - allocate initial config memory
1469 * - setup the DRM framebuffer with the allocated memory
1471 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1473 struct drm_i915_private *dev_priv;
1474 struct intel_device_info *info;
1475 int ret = 0, mmio_bar, mmio_size;
1476 uint32_t aperture_size;
1478 info = (struct intel_device_info *) flags;
1480 /* Refuse to load on gen6+ without kms enabled. */
1481 if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET)) {
1482 DRM_INFO("Your hardware requires kernel modesetting (KMS)\n");
1483 DRM_INFO("See CONFIG_DRM_I915_KMS, nomodeset, and i915.modeset parameters\n");
1487 dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
1488 if (dev_priv == NULL)
1491 dev->dev_private = (void *)dev_priv;
1492 dev_priv->dev = dev;
1493 dev_priv->info = info;
1495 spin_lock_init(&dev_priv->irq_lock);
1496 spin_lock_init(&dev_priv->gpu_error.lock);
1497 spin_lock_init(&dev_priv->backlight.lock);
1498 spin_lock_init(&dev_priv->uncore.lock);
1499 spin_lock_init(&dev_priv->mm.object_stat_lock);
1500 mutex_init(&dev_priv->dpio_lock);
1501 mutex_init(&dev_priv->modeset_restore_lock);
1503 intel_pm_setup(dev);
1505 intel_display_crc_init(dev);
1507 i915_dump_device_info(dev_priv);
1509 /* Not all pre-production machines fall into this category, only the
1510 * very first ones. Almost everything should work, except for maybe
1511 * suspend/resume. And we don't implement workarounds that affect only
1512 * pre-production machines. */
1513 if (IS_HSW_EARLY_SDV(dev))
1514 DRM_INFO("This is an early pre-production Haswell machine. "
1515 "It may not be fully functional.\n");
1517 if (i915_get_bridge_dev(dev)) {
1522 mmio_bar = IS_GEN2(dev) ? 1 : 0;
1523 /* Before gen4, the registers and the GTT are behind different BARs.
1524 * However, from gen4 onwards, the registers and the GTT are shared
1525 * in the same BAR, so we want to restrict this ioremap from
1526 * clobbering the GTT which we want ioremap_wc instead. Fortunately,
1527 * the register BAR remains the same size for all the earlier
1528 * generations up to Ironlake.
1531 mmio_size = 512*1024;
1533 mmio_size = 2*1024*1024;
1535 dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size);
1536 if (!dev_priv->regs) {
1537 DRM_ERROR("failed to map registers\n");
1542 intel_uncore_early_sanitize(dev);
1544 /* This must be called before any calls to HAS_PCH_* */
1545 intel_detect_pch(dev);
1547 intel_uncore_init(dev);
1549 ret = i915_gem_gtt_init(dev);
1553 if (drm_core_check_feature(dev, DRIVER_MODESET))
1554 i915_kick_out_firmware_fb(dev_priv);
1556 pci_set_master(dev->pdev);
1558 /* overlay on gen2 is broken and can't address above 1G */
1560 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
1562 /* 965GM sometimes incorrectly writes to hardware status page (HWS)
1563 * using 32bit addressing, overwriting memory if HWS is located
1566 * The documentation also mentions an issue with undefined
1567 * behaviour if any general state is accessed within a page above 4GB,
1568 * which also needs to be handled carefully.
1570 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1571 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(32));
1573 aperture_size = dev_priv->gtt.mappable_end;
1575 dev_priv->gtt.mappable =
1576 io_mapping_create_wc(dev_priv->gtt.mappable_base,
1578 if (dev_priv->gtt.mappable == NULL) {
1583 dev_priv->gtt.mtrr = arch_phys_wc_add(dev_priv->gtt.mappable_base,
1586 /* The i915 workqueue is primarily used for batched retirement of
1587 * requests (and thus managing bo) once the task has been completed
1588 * by the GPU. i915_gem_retire_requests() is called directly when we
1589 * need high-priority retirement, such as waiting for an explicit
1592 * It is also used for periodic low-priority events, such as
1593 * idle-timers and recording error state.
1595 * All tasks on the workqueue are expected to acquire the dev mutex
1596 * so there is no point in running more than one instance of the
1597 * workqueue at any time. Use an ordered one.
1599 dev_priv->wq = alloc_ordered_workqueue("i915", 0);
1600 if (dev_priv->wq == NULL) {
1601 DRM_ERROR("Failed to create our workqueue.\n");
1606 intel_irq_init(dev);
1607 intel_uncore_sanitize(dev);
1609 /* Try to make sure MCHBAR is enabled before poking at it */
1610 intel_setup_mchbar(dev);
1611 intel_setup_gmbus(dev);
1612 intel_opregion_setup(dev);
1614 intel_setup_bios(dev);
1618 /* On the 945G/GM, the chipset reports the MSI capability on the
1619 * integrated graphics even though the support isn't actually there
1620 * according to the published specs. It doesn't appear to function
1621 * correctly in testing on 945G.
1622 * This may be a side effect of MSI having been made available for PEG
1623 * and the registers being closely associated.
1625 * According to chipset errata, on the 965GM, MSI interrupts may
1626 * be lost or delayed, but we use them anyways to avoid
1627 * stuck interrupts on some machines.
1629 if (!IS_I945G(dev) && !IS_I945GM(dev))
1630 pci_enable_msi(dev->pdev);
1632 dev_priv->num_plane = 1;
1633 if (IS_VALLEYVIEW(dev))
1634 dev_priv->num_plane = 2;
1636 if (INTEL_INFO(dev)->num_pipes) {
1637 ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes);
1639 goto out_gem_unload;
1642 if (HAS_POWER_WELL(dev))
1643 intel_power_domains_init(dev);
1645 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1646 ret = i915_load_modeset_init(dev);
1648 DRM_ERROR("failed to init modeset\n");
1649 goto out_power_well;
1652 /* Start out suspended in ums mode. */
1653 dev_priv->ums.mm_suspended = 1;
1656 i915_setup_sysfs(dev);
1658 if (INTEL_INFO(dev)->num_pipes) {
1659 /* Must be done after probing outputs */
1660 intel_opregion_init(dev);
1661 acpi_video_register();
1665 intel_gpu_ips_init(dev_priv);
1670 if (HAS_POWER_WELL(dev))
1671 intel_power_domains_remove(dev);
1672 drm_vblank_cleanup(dev);
1674 if (dev_priv->mm.inactive_shrinker.scan_objects)
1675 unregister_shrinker(&dev_priv->mm.inactive_shrinker);
1677 if (dev->pdev->msi_enabled)
1678 pci_disable_msi(dev->pdev);
1680 intel_teardown_gmbus(dev);
1681 intel_teardown_mchbar(dev);
1682 destroy_workqueue(dev_priv->wq);
1684 arch_phys_wc_del(dev_priv->gtt.mtrr);
1685 io_mapping_free(dev_priv->gtt.mappable);
1687 list_del(&dev_priv->gtt.base.global_link);
1688 drm_mm_takedown(&dev_priv->gtt.base.mm);
1689 dev_priv->gtt.base.cleanup(&dev_priv->gtt.base);
1691 intel_uncore_fini(dev);
1692 pci_iounmap(dev->pdev, dev_priv->regs);
1694 pci_dev_put(dev_priv->bridge_dev);
1697 kmem_cache_destroy(dev_priv->slab);
1702 int i915_driver_unload(struct drm_device *dev)
1704 struct drm_i915_private *dev_priv = dev->dev_private;
1707 intel_gpu_ips_teardown();
1709 if (HAS_POWER_WELL(dev)) {
1710 /* The i915.ko module is still not prepared to be loaded when
1711 * the power well is not enabled, so just enable it in case
1712 * we're going to unload/reload. */
1713 intel_display_set_init_power(dev, true);
1714 intel_power_domains_remove(dev);
1717 i915_teardown_sysfs(dev);
1719 if (dev_priv->mm.inactive_shrinker.scan_objects)
1720 unregister_shrinker(&dev_priv->mm.inactive_shrinker);
1722 ret = i915_gem_suspend(dev);
1724 DRM_ERROR("failed to idle hardware: %d\n", ret);
1726 io_mapping_free(dev_priv->gtt.mappable);
1727 arch_phys_wc_del(dev_priv->gtt.mtrr);
1729 acpi_video_unregister();
1731 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1732 intel_fbdev_fini(dev);
1733 intel_modeset_cleanup(dev);
1734 cancel_work_sync(&dev_priv->console_resume_work);
1737 * free the memory space allocated for the child device
1738 * config parsed from VBT
1740 if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
1741 kfree(dev_priv->vbt.child_dev);
1742 dev_priv->vbt.child_dev = NULL;
1743 dev_priv->vbt.child_dev_num = 0;
1746 vga_switcheroo_unregister_client(dev->pdev);
1747 vga_client_register(dev->pdev, NULL, NULL, NULL);
1750 /* Free error state after interrupts are fully disabled. */
1751 del_timer_sync(&dev_priv->gpu_error.hangcheck_timer);
1752 cancel_work_sync(&dev_priv->gpu_error.work);
1753 i915_destroy_error_state(dev);
1755 cancel_delayed_work_sync(&dev_priv->pc8.enable_work);
1757 if (dev->pdev->msi_enabled)
1758 pci_disable_msi(dev->pdev);
1760 intel_opregion_fini(dev);
1762 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1763 /* Flush any outstanding unpin_work. */
1764 flush_workqueue(dev_priv->wq);
1766 mutex_lock(&dev->struct_mutex);
1767 i915_gem_free_all_phys_object(dev);
1768 i915_gem_cleanup_ringbuffer(dev);
1769 i915_gem_context_fini(dev);
1770 mutex_unlock(&dev->struct_mutex);
1771 i915_gem_cleanup_aliasing_ppgtt(dev);
1772 i915_gem_cleanup_stolen(dev);
1774 if (!I915_NEED_GFX_HWS(dev))
1778 list_del(&dev_priv->gtt.base.global_link);
1779 WARN_ON(!list_empty(&dev_priv->vm_list));
1780 drm_mm_takedown(&dev_priv->gtt.base.mm);
1782 drm_vblank_cleanup(dev);
1784 intel_teardown_gmbus(dev);
1785 intel_teardown_mchbar(dev);
1787 destroy_workqueue(dev_priv->wq);
1788 pm_qos_remove_request(&dev_priv->pm_qos);
1790 dev_priv->gtt.base.cleanup(&dev_priv->gtt.base);
1792 intel_uncore_fini(dev);
1793 if (dev_priv->regs != NULL)
1794 pci_iounmap(dev->pdev, dev_priv->regs);
1797 kmem_cache_destroy(dev_priv->slab);
1799 pci_dev_put(dev_priv->bridge_dev);
1800 kfree(dev->dev_private);
1805 int i915_driver_open(struct drm_device *dev, struct drm_file *file)
1809 ret = i915_gem_open(dev, file);
1817 * i915_driver_lastclose - clean up after all DRM clients have exited
1820 * Take care of cleaning up after all DRM clients have exited. In the
1821 * mode setting case, we want to restore the kernel's initial mode (just
1822 * in case the last client left us in a bad state).
1824 * Additionally, in the non-mode setting case, we'll tear down the GTT
1825 * and DMA structures, since the kernel won't be using them, and clea
1828 void i915_driver_lastclose(struct drm_device * dev)
1830 drm_i915_private_t *dev_priv = dev->dev_private;
1832 /* On gen6+ we refuse to init without kms enabled, but then the drm core
1833 * goes right around and calls lastclose. Check for this and don't clean
1838 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1839 intel_fbdev_restore_mode(dev);
1840 vga_switcheroo_process_delayed_switch();
1844 i915_gem_lastclose(dev);
1846 i915_dma_cleanup(dev);
1849 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1851 mutex_lock(&dev->struct_mutex);
1852 i915_gem_context_close(dev, file_priv);
1853 i915_gem_release(dev, file_priv);
1854 mutex_unlock(&dev->struct_mutex);
1857 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
1859 struct drm_i915_file_private *file_priv = file->driver_priv;
1864 const struct drm_ioctl_desc i915_ioctls[] = {
1865 DRM_IOCTL_DEF_DRV(I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1866 DRM_IOCTL_DEF_DRV(I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
1867 DRM_IOCTL_DEF_DRV(I915_FLIP, i915_flip_bufs, DRM_AUTH),
1868 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
1869 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
1870 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
1871 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH|DRM_RENDER_ALLOW),
1872 DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1873 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
1874 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
1875 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1876 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
1877 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1878 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1879 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH),
1880 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1881 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1882 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1883 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED),
1884 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
1885 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1886 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1887 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
1888 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1889 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1890 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
1891 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1892 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1893 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1894 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1895 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1896 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1897 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1898 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1899 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1900 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1901 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1902 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1903 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
1904 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1905 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1906 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1907 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1908 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, intel_sprite_get_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1909 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
1910 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1911 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1912 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
1915 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1918 * This is really ugly: Because old userspace abused the linux agp interface to
1919 * manage the gtt, we need to claim that all intel devices are agp. For
1920 * otherwise the drm core refuses to initialize the agp support code.
1922 int i915_driver_device_is_agp(struct drm_device * dev)