1 /* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 #include "drm_crtc_helper.h"
32 #include "drm_fb_helper.h"
33 #include "intel_drv.h"
36 #include "i915_trace.h"
37 #include <linux/vgaarb.h>
38 #include <linux/acpi.h>
39 #include <linux/pnp.h>
40 #include <linux/vga_switcheroo.h>
41 #include <linux/slab.h>
43 /* Really want an OS-independent resettable timer. Would like to have
44 * this loop run for (eg) 3 sec, but have the timer reset every time
45 * the head pointer changes, so that EBUSY only happens if the ring
46 * actually stalls for (eg) 3 seconds.
48 int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
50 drm_i915_private_t *dev_priv = dev->dev_private;
51 drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
52 u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
53 u32 last_acthd = I915_READ(acthd_reg);
55 u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
58 trace_i915_ring_wait_begin (dev);
60 for (i = 0; i < 100000; i++) {
61 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
62 acthd = I915_READ(acthd_reg);
63 ring->space = ring->head - (ring->tail + 8);
65 ring->space += ring->Size;
66 if (ring->space >= n) {
67 trace_i915_ring_wait_end (dev);
71 if (dev->primary->master) {
72 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
73 if (master_priv->sarea_priv)
74 master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
78 if (ring->head != last_head)
80 if (acthd != last_acthd)
83 last_head = ring->head;
85 msleep_interruptible(10);
89 trace_i915_ring_wait_end (dev);
93 /* As a ringbuffer is only allowed to wrap between instructions, fill
94 * the tail with NOOPs.
96 int i915_wrap_ring(struct drm_device *dev)
98 drm_i915_private_t *dev_priv = dev->dev_private;
99 volatile unsigned int *virt;
102 rem = dev_priv->ring.Size - dev_priv->ring.tail;
103 if (dev_priv->ring.space < rem) {
104 int ret = i915_wait_ring(dev, rem, __func__);
108 dev_priv->ring.space -= rem;
110 virt = (unsigned int *)
111 (dev_priv->ring.virtual_start + dev_priv->ring.tail);
116 dev_priv->ring.tail = 0;
122 * Sets up the hardware status page for devices that need a physical address
125 static int i915_init_phys_hws(struct drm_device *dev)
127 drm_i915_private_t *dev_priv = dev->dev_private;
128 /* Program Hardware Status Page */
129 dev_priv->status_page_dmah =
130 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE);
132 if (!dev_priv->status_page_dmah) {
133 DRM_ERROR("Can not allocate hardware status page\n");
136 dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
137 dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
139 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
142 dev_priv->dma_status_page |= (dev_priv->dma_status_page >> 28) &
145 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
146 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
151 * Frees the hardware status page, whether it's a physical address or a virtual
152 * address set up by the X Server.
154 static void i915_free_hws(struct drm_device *dev)
156 drm_i915_private_t *dev_priv = dev->dev_private;
157 if (dev_priv->status_page_dmah) {
158 drm_pci_free(dev, dev_priv->status_page_dmah);
159 dev_priv->status_page_dmah = NULL;
162 if (dev_priv->status_gfx_addr) {
163 dev_priv->status_gfx_addr = 0;
164 drm_core_ioremapfree(&dev_priv->hws_map, dev);
167 /* Need to rewrite hardware status page */
168 I915_WRITE(HWS_PGA, 0x1ffff000);
171 void i915_kernel_lost_context(struct drm_device * dev)
173 drm_i915_private_t *dev_priv = dev->dev_private;
174 struct drm_i915_master_private *master_priv;
175 drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
178 * We should never lose context on the ring with modesetting
179 * as we don't expose it to userspace
181 if (drm_core_check_feature(dev, DRIVER_MODESET))
184 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
185 ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
186 ring->space = ring->head - (ring->tail + 8);
188 ring->space += ring->Size;
190 if (!dev->primary->master)
193 master_priv = dev->primary->master->driver_priv;
194 if (ring->head == ring->tail && master_priv->sarea_priv)
195 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
198 static int i915_dma_cleanup(struct drm_device * dev)
200 drm_i915_private_t *dev_priv = dev->dev_private;
201 /* Make sure interrupts are disabled here because the uninstall ioctl
202 * may not have been called from userspace and after dev_private
203 * is freed, it's too late.
205 if (dev->irq_enabled)
206 drm_irq_uninstall(dev);
208 if (dev_priv->ring.virtual_start) {
209 drm_core_ioremapfree(&dev_priv->ring.map, dev);
210 dev_priv->ring.virtual_start = NULL;
211 dev_priv->ring.map.handle = NULL;
212 dev_priv->ring.map.size = 0;
215 /* Clear the HWS virtual address at teardown */
216 if (I915_NEED_GFX_HWS(dev))
222 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
224 drm_i915_private_t *dev_priv = dev->dev_private;
225 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
227 master_priv->sarea = drm_getsarea(dev);
228 if (master_priv->sarea) {
229 master_priv->sarea_priv = (drm_i915_sarea_t *)
230 ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
232 DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
235 if (init->ring_size != 0) {
236 if (dev_priv->ring.ring_obj != NULL) {
237 i915_dma_cleanup(dev);
238 DRM_ERROR("Client tried to initialize ringbuffer in "
243 dev_priv->ring.Size = init->ring_size;
245 dev_priv->ring.map.offset = init->ring_start;
246 dev_priv->ring.map.size = init->ring_size;
247 dev_priv->ring.map.type = 0;
248 dev_priv->ring.map.flags = 0;
249 dev_priv->ring.map.mtrr = 0;
251 drm_core_ioremap_wc(&dev_priv->ring.map, dev);
253 if (dev_priv->ring.map.handle == NULL) {
254 i915_dma_cleanup(dev);
255 DRM_ERROR("can not ioremap virtual address for"
261 dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
263 dev_priv->cpp = init->cpp;
264 dev_priv->back_offset = init->back_offset;
265 dev_priv->front_offset = init->front_offset;
266 dev_priv->current_page = 0;
267 if (master_priv->sarea_priv)
268 master_priv->sarea_priv->pf_current_page = 0;
270 /* Allow hardware batchbuffers unless told otherwise.
272 dev_priv->allow_batchbuffer = 1;
277 static int i915_dma_resume(struct drm_device * dev)
279 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
281 DRM_DEBUG_DRIVER("%s\n", __func__);
283 if (dev_priv->ring.map.handle == NULL) {
284 DRM_ERROR("can not ioremap virtual address for"
289 /* Program Hardware Status Page */
290 if (!dev_priv->hw_status_page) {
291 DRM_ERROR("Can not find hardware status page\n");
294 DRM_DEBUG_DRIVER("hw status page @ %p\n",
295 dev_priv->hw_status_page);
297 if (dev_priv->status_gfx_addr != 0)
298 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
300 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
301 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
306 static int i915_dma_init(struct drm_device *dev, void *data,
307 struct drm_file *file_priv)
309 drm_i915_init_t *init = data;
312 switch (init->func) {
314 retcode = i915_initialize(dev, init);
316 case I915_CLEANUP_DMA:
317 retcode = i915_dma_cleanup(dev);
319 case I915_RESUME_DMA:
320 retcode = i915_dma_resume(dev);
330 /* Implement basically the same security restrictions as hardware does
331 * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
333 * Most of the calculations below involve calculating the size of a
334 * particular instruction. It's important to get the size right as
335 * that tells us where the next instruction to check is. Any illegal
336 * instruction detected will be given a size of zero, which is a
337 * signal to abort the rest of the buffer.
339 static int do_validate_cmd(int cmd)
341 switch (((cmd >> 29) & 0x7)) {
343 switch ((cmd >> 23) & 0x3f) {
345 return 1; /* MI_NOOP */
347 return 1; /* MI_FLUSH */
349 return 0; /* disallow everything else */
353 return 0; /* reserved */
355 return (cmd & 0xff) + 2; /* 2d commands */
357 if (((cmd >> 24) & 0x1f) <= 0x18)
360 switch ((cmd >> 24) & 0x1f) {
364 switch ((cmd >> 16) & 0xff) {
366 return (cmd & 0x1f) + 2;
368 return (cmd & 0xf) + 2;
370 return (cmd & 0xffff) + 2;
374 return (cmd & 0xffff) + 1;
378 if ((cmd & (1 << 23)) == 0) /* inline vertices */
379 return (cmd & 0x1ffff) + 2;
380 else if (cmd & (1 << 17)) /* indirect random */
381 if ((cmd & 0xffff) == 0)
382 return 0; /* unknown length, too hard */
384 return (((cmd & 0xffff) + 1) / 2) + 1;
386 return 2; /* indirect sequential */
397 static int validate_cmd(int cmd)
399 int ret = do_validate_cmd(cmd);
401 /* printk("validate_cmd( %x ): %d\n", cmd, ret); */
406 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
408 drm_i915_private_t *dev_priv = dev->dev_private;
412 if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8)
415 BEGIN_LP_RING((dwords+1)&~1);
417 for (i = 0; i < dwords;) {
422 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
441 i915_emit_box(struct drm_device *dev,
442 struct drm_clip_rect *boxes,
443 int i, int DR1, int DR4)
445 drm_i915_private_t *dev_priv = dev->dev_private;
446 struct drm_clip_rect box = boxes[i];
449 if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
450 DRM_ERROR("Bad box %d,%d..%d,%d\n",
451 box.x1, box.y1, box.x2, box.y2);
457 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
458 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
459 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
464 OUT_RING(GFX_OP_DRAWRECT_INFO);
466 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
467 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
476 /* XXX: Emitting the counter should really be moved to part of the IRQ
477 * emit. For now, do it in both places:
480 static void i915_emit_breadcrumb(struct drm_device *dev)
482 drm_i915_private_t *dev_priv = dev->dev_private;
483 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
487 if (dev_priv->counter > 0x7FFFFFFFUL)
488 dev_priv->counter = 0;
489 if (master_priv->sarea_priv)
490 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
493 OUT_RING(MI_STORE_DWORD_INDEX);
494 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
495 OUT_RING(dev_priv->counter);
500 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
501 drm_i915_cmdbuffer_t *cmd,
502 struct drm_clip_rect *cliprects,
505 int nbox = cmd->num_cliprects;
506 int i = 0, count, ret;
509 DRM_ERROR("alignment");
513 i915_kernel_lost_context(dev);
515 count = nbox ? nbox : 1;
517 for (i = 0; i < count; i++) {
519 ret = i915_emit_box(dev, cliprects, i,
525 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
530 i915_emit_breadcrumb(dev);
534 static int i915_dispatch_batchbuffer(struct drm_device * dev,
535 drm_i915_batchbuffer_t * batch,
536 struct drm_clip_rect *cliprects)
538 drm_i915_private_t *dev_priv = dev->dev_private;
539 int nbox = batch->num_cliprects;
543 if ((batch->start | batch->used) & 0x7) {
544 DRM_ERROR("alignment");
548 i915_kernel_lost_context(dev);
550 count = nbox ? nbox : 1;
552 for (i = 0; i < count; i++) {
554 int ret = i915_emit_box(dev, cliprects, i,
555 batch->DR1, batch->DR4);
560 if (!IS_I830(dev) && !IS_845G(dev)) {
563 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
564 OUT_RING(batch->start);
566 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
567 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
572 OUT_RING(MI_BATCH_BUFFER);
573 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
574 OUT_RING(batch->start + batch->used - 4);
580 i915_emit_breadcrumb(dev);
585 static int i915_dispatch_flip(struct drm_device * dev)
587 drm_i915_private_t *dev_priv = dev->dev_private;
588 struct drm_i915_master_private *master_priv =
589 dev->primary->master->driver_priv;
592 if (!master_priv->sarea_priv)
595 DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
597 dev_priv->current_page,
598 master_priv->sarea_priv->pf_current_page);
600 i915_kernel_lost_context(dev);
603 OUT_RING(MI_FLUSH | MI_READ_FLUSH);
608 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
610 if (dev_priv->current_page == 0) {
611 OUT_RING(dev_priv->back_offset);
612 dev_priv->current_page = 1;
614 OUT_RING(dev_priv->front_offset);
615 dev_priv->current_page = 0;
621 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
625 master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
628 OUT_RING(MI_STORE_DWORD_INDEX);
629 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
630 OUT_RING(dev_priv->counter);
634 master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
638 static int i915_quiescent(struct drm_device * dev)
640 drm_i915_private_t *dev_priv = dev->dev_private;
642 i915_kernel_lost_context(dev);
643 return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
646 static int i915_flush_ioctl(struct drm_device *dev, void *data,
647 struct drm_file *file_priv)
651 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
653 mutex_lock(&dev->struct_mutex);
654 ret = i915_quiescent(dev);
655 mutex_unlock(&dev->struct_mutex);
660 static int i915_batchbuffer(struct drm_device *dev, void *data,
661 struct drm_file *file_priv)
663 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
664 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
665 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
666 master_priv->sarea_priv;
667 drm_i915_batchbuffer_t *batch = data;
669 struct drm_clip_rect *cliprects = NULL;
671 if (!dev_priv->allow_batchbuffer) {
672 DRM_ERROR("Batchbuffer ioctl disabled\n");
676 DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
677 batch->start, batch->used, batch->num_cliprects);
679 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
681 if (batch->num_cliprects < 0)
684 if (batch->num_cliprects) {
685 cliprects = kcalloc(batch->num_cliprects,
686 sizeof(struct drm_clip_rect),
688 if (cliprects == NULL)
691 ret = copy_from_user(cliprects, batch->cliprects,
692 batch->num_cliprects *
693 sizeof(struct drm_clip_rect));
698 mutex_lock(&dev->struct_mutex);
699 ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
700 mutex_unlock(&dev->struct_mutex);
703 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
711 static int i915_cmdbuffer(struct drm_device *dev, void *data,
712 struct drm_file *file_priv)
714 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
715 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
716 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
717 master_priv->sarea_priv;
718 drm_i915_cmdbuffer_t *cmdbuf = data;
719 struct drm_clip_rect *cliprects = NULL;
723 DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
724 cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
726 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
728 if (cmdbuf->num_cliprects < 0)
731 batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
732 if (batch_data == NULL)
735 ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
737 goto fail_batch_free;
739 if (cmdbuf->num_cliprects) {
740 cliprects = kcalloc(cmdbuf->num_cliprects,
741 sizeof(struct drm_clip_rect), GFP_KERNEL);
742 if (cliprects == NULL) {
744 goto fail_batch_free;
747 ret = copy_from_user(cliprects, cmdbuf->cliprects,
748 cmdbuf->num_cliprects *
749 sizeof(struct drm_clip_rect));
754 mutex_lock(&dev->struct_mutex);
755 ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
756 mutex_unlock(&dev->struct_mutex);
758 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
763 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
773 static int i915_flip_bufs(struct drm_device *dev, void *data,
774 struct drm_file *file_priv)
778 DRM_DEBUG_DRIVER("%s\n", __func__);
780 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
782 mutex_lock(&dev->struct_mutex);
783 ret = i915_dispatch_flip(dev);
784 mutex_unlock(&dev->struct_mutex);
789 static int i915_getparam(struct drm_device *dev, void *data,
790 struct drm_file *file_priv)
792 drm_i915_private_t *dev_priv = dev->dev_private;
793 drm_i915_getparam_t *param = data;
797 DRM_ERROR("called with no initialization\n");
801 switch (param->param) {
802 case I915_PARAM_IRQ_ACTIVE:
803 value = dev->pdev->irq ? 1 : 0;
805 case I915_PARAM_ALLOW_BATCHBUFFER:
806 value = dev_priv->allow_batchbuffer ? 1 : 0;
808 case I915_PARAM_LAST_DISPATCH:
809 value = READ_BREADCRUMB(dev_priv);
811 case I915_PARAM_CHIPSET_ID:
812 value = dev->pci_device;
814 case I915_PARAM_HAS_GEM:
815 value = dev_priv->has_gem;
817 case I915_PARAM_NUM_FENCES_AVAIL:
818 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
820 case I915_PARAM_HAS_OVERLAY:
821 value = dev_priv->overlay ? 1 : 0;
823 case I915_PARAM_HAS_PAGEFLIPPING:
826 case I915_PARAM_HAS_EXECBUF2:
828 value = dev_priv->has_gem;
831 DRM_DEBUG_DRIVER("Unknown parameter %d\n",
836 if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
837 DRM_ERROR("DRM_COPY_TO_USER failed\n");
844 static int i915_setparam(struct drm_device *dev, void *data,
845 struct drm_file *file_priv)
847 drm_i915_private_t *dev_priv = dev->dev_private;
848 drm_i915_setparam_t *param = data;
851 DRM_ERROR("called with no initialization\n");
855 switch (param->param) {
856 case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
858 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
859 dev_priv->tex_lru_log_granularity = param->value;
861 case I915_SETPARAM_ALLOW_BATCHBUFFER:
862 dev_priv->allow_batchbuffer = param->value;
864 case I915_SETPARAM_NUM_USED_FENCES:
865 if (param->value > dev_priv->num_fence_regs ||
868 /* Userspace can use first N regs */
869 dev_priv->fence_reg_start = param->value;
872 DRM_DEBUG_DRIVER("unknown parameter %d\n",
880 static int i915_set_status_page(struct drm_device *dev, void *data,
881 struct drm_file *file_priv)
883 drm_i915_private_t *dev_priv = dev->dev_private;
884 drm_i915_hws_addr_t *hws = data;
886 if (!I915_NEED_GFX_HWS(dev))
890 DRM_ERROR("called with no initialization\n");
894 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
895 WARN(1, "tried to set status page when mode setting active\n");
899 DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
901 dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12);
903 dev_priv->hws_map.offset = dev->agp->base + hws->addr;
904 dev_priv->hws_map.size = 4*1024;
905 dev_priv->hws_map.type = 0;
906 dev_priv->hws_map.flags = 0;
907 dev_priv->hws_map.mtrr = 0;
909 drm_core_ioremap_wc(&dev_priv->hws_map, dev);
910 if (dev_priv->hws_map.handle == NULL) {
911 i915_dma_cleanup(dev);
912 dev_priv->status_gfx_addr = 0;
913 DRM_ERROR("can not ioremap virtual address for"
914 " G33 hw status page\n");
917 dev_priv->hw_status_page = dev_priv->hws_map.handle;
919 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
920 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
921 DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
922 dev_priv->status_gfx_addr);
923 DRM_DEBUG_DRIVER("load hws at %p\n",
924 dev_priv->hw_status_page);
928 static int i915_get_bridge_dev(struct drm_device *dev)
930 struct drm_i915_private *dev_priv = dev->dev_private;
932 dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
933 if (!dev_priv->bridge_dev) {
934 DRM_ERROR("bridge device not found\n");
940 #define MCHBAR_I915 0x44
941 #define MCHBAR_I965 0x48
942 #define MCHBAR_SIZE (4*4096)
944 #define DEVEN_REG 0x54
945 #define DEVEN_MCHBAR_EN (1 << 28)
947 /* Allocate space for the MCH regs if needed, return nonzero on error */
949 intel_alloc_mchbar_resource(struct drm_device *dev)
951 drm_i915_private_t *dev_priv = dev->dev_private;
952 int reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
953 u32 temp_lo, temp_hi = 0;
958 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
959 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
960 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
962 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
965 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) {
971 /* Get some space for it */
972 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, &dev_priv->mch_res,
973 MCHBAR_SIZE, MCHBAR_SIZE,
975 0, pcibios_align_resource,
976 dev_priv->bridge_dev);
978 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
979 dev_priv->mch_res.start = 0;
984 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
985 upper_32_bits(dev_priv->mch_res.start));
987 pci_write_config_dword(dev_priv->bridge_dev, reg,
988 lower_32_bits(dev_priv->mch_res.start));
993 /* Setup MCHBAR if possible, return true if we should disable it again */
995 intel_setup_mchbar(struct drm_device *dev)
997 drm_i915_private_t *dev_priv = dev->dev_private;
998 int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
1002 dev_priv->mchbar_need_disable = false;
1004 if (IS_I915G(dev) || IS_I915GM(dev)) {
1005 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1006 enabled = !!(temp & DEVEN_MCHBAR_EN);
1008 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1012 /* If it's already enabled, don't have to do anything */
1016 if (intel_alloc_mchbar_resource(dev))
1019 dev_priv->mchbar_need_disable = true;
1021 /* Space is allocated or reserved, so enable it. */
1022 if (IS_I915G(dev) || IS_I915GM(dev)) {
1023 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
1024 temp | DEVEN_MCHBAR_EN);
1026 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1027 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
1032 intel_teardown_mchbar(struct drm_device *dev)
1034 drm_i915_private_t *dev_priv = dev->dev_private;
1035 int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
1038 if (dev_priv->mchbar_need_disable) {
1039 if (IS_I915G(dev) || IS_I915GM(dev)) {
1040 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1041 temp &= ~DEVEN_MCHBAR_EN;
1042 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
1044 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1046 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
1050 if (dev_priv->mch_res.start)
1051 release_resource(&dev_priv->mch_res);
1055 * i915_probe_agp - get AGP bootup configuration
1057 * @aperture_size: returns AGP aperture configured size
1058 * @preallocated_size: returns size of BIOS preallocated AGP space
1060 * Since Intel integrated graphics are UMA, the BIOS has to set aside
1061 * some RAM for the framebuffer at early boot. This code figures out
1062 * how much was set aside so we can use it for our own purposes.
1064 static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
1065 uint32_t *preallocated_size,
1068 struct drm_i915_private *dev_priv = dev->dev_private;
1070 unsigned long overhead;
1071 unsigned long stolen;
1073 /* Get the fb aperture size and "stolen" memory amount. */
1074 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &tmp);
1076 *aperture_size = 1024 * 1024;
1077 *preallocated_size = 1024 * 1024;
1079 switch (dev->pdev->device) {
1080 case PCI_DEVICE_ID_INTEL_82830_CGC:
1081 case PCI_DEVICE_ID_INTEL_82845G_IG:
1082 case PCI_DEVICE_ID_INTEL_82855GM_IG:
1083 case PCI_DEVICE_ID_INTEL_82865_IG:
1084 if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
1085 *aperture_size *= 64;
1087 *aperture_size *= 128;
1090 /* 9xx supports large sizes, just look at the length */
1091 *aperture_size = pci_resource_len(dev->pdev, 2);
1096 * Some of the preallocated space is taken by the GTT
1097 * and popup. GTT is 1K per MB of aperture size, and popup is 4K.
1099 if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev))
1102 overhead = (*aperture_size / 1024) + 4096;
1105 /* SNB has memory control reg at 0x50.w */
1106 pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &tmp);
1108 switch (tmp & SNB_GMCH_GMS_STOLEN_MASK) {
1109 case INTEL_855_GMCH_GMS_DISABLED:
1110 DRM_ERROR("video memory is disabled\n");
1112 case SNB_GMCH_GMS_STOLEN_32M:
1113 stolen = 32 * 1024 * 1024;
1115 case SNB_GMCH_GMS_STOLEN_64M:
1116 stolen = 64 * 1024 * 1024;
1118 case SNB_GMCH_GMS_STOLEN_96M:
1119 stolen = 96 * 1024 * 1024;
1121 case SNB_GMCH_GMS_STOLEN_128M:
1122 stolen = 128 * 1024 * 1024;
1124 case SNB_GMCH_GMS_STOLEN_160M:
1125 stolen = 160 * 1024 * 1024;
1127 case SNB_GMCH_GMS_STOLEN_192M:
1128 stolen = 192 * 1024 * 1024;
1130 case SNB_GMCH_GMS_STOLEN_224M:
1131 stolen = 224 * 1024 * 1024;
1133 case SNB_GMCH_GMS_STOLEN_256M:
1134 stolen = 256 * 1024 * 1024;
1136 case SNB_GMCH_GMS_STOLEN_288M:
1137 stolen = 288 * 1024 * 1024;
1139 case SNB_GMCH_GMS_STOLEN_320M:
1140 stolen = 320 * 1024 * 1024;
1142 case SNB_GMCH_GMS_STOLEN_352M:
1143 stolen = 352 * 1024 * 1024;
1145 case SNB_GMCH_GMS_STOLEN_384M:
1146 stolen = 384 * 1024 * 1024;
1148 case SNB_GMCH_GMS_STOLEN_416M:
1149 stolen = 416 * 1024 * 1024;
1151 case SNB_GMCH_GMS_STOLEN_448M:
1152 stolen = 448 * 1024 * 1024;
1154 case SNB_GMCH_GMS_STOLEN_480M:
1155 stolen = 480 * 1024 * 1024;
1157 case SNB_GMCH_GMS_STOLEN_512M:
1158 stolen = 512 * 1024 * 1024;
1161 DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
1162 tmp & SNB_GMCH_GMS_STOLEN_MASK);
1166 switch (tmp & INTEL_GMCH_GMS_MASK) {
1167 case INTEL_855_GMCH_GMS_DISABLED:
1168 DRM_ERROR("video memory is disabled\n");
1170 case INTEL_855_GMCH_GMS_STOLEN_1M:
1171 stolen = 1 * 1024 * 1024;
1173 case INTEL_855_GMCH_GMS_STOLEN_4M:
1174 stolen = 4 * 1024 * 1024;
1176 case INTEL_855_GMCH_GMS_STOLEN_8M:
1177 stolen = 8 * 1024 * 1024;
1179 case INTEL_855_GMCH_GMS_STOLEN_16M:
1180 stolen = 16 * 1024 * 1024;
1182 case INTEL_855_GMCH_GMS_STOLEN_32M:
1183 stolen = 32 * 1024 * 1024;
1185 case INTEL_915G_GMCH_GMS_STOLEN_48M:
1186 stolen = 48 * 1024 * 1024;
1188 case INTEL_915G_GMCH_GMS_STOLEN_64M:
1189 stolen = 64 * 1024 * 1024;
1191 case INTEL_GMCH_GMS_STOLEN_128M:
1192 stolen = 128 * 1024 * 1024;
1194 case INTEL_GMCH_GMS_STOLEN_256M:
1195 stolen = 256 * 1024 * 1024;
1197 case INTEL_GMCH_GMS_STOLEN_96M:
1198 stolen = 96 * 1024 * 1024;
1200 case INTEL_GMCH_GMS_STOLEN_160M:
1201 stolen = 160 * 1024 * 1024;
1203 case INTEL_GMCH_GMS_STOLEN_224M:
1204 stolen = 224 * 1024 * 1024;
1206 case INTEL_GMCH_GMS_STOLEN_352M:
1207 stolen = 352 * 1024 * 1024;
1210 DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
1211 tmp & INTEL_GMCH_GMS_MASK);
1216 *preallocated_size = stolen - overhead;
1222 #define PTE_ADDRESS_MASK 0xfffff000
1223 #define PTE_ADDRESS_MASK_HIGH 0x000000f0 /* i915+ */
1224 #define PTE_MAPPING_TYPE_UNCACHED (0 << 1)
1225 #define PTE_MAPPING_TYPE_DCACHE (1 << 1) /* i830 only */
1226 #define PTE_MAPPING_TYPE_CACHED (3 << 1)
1227 #define PTE_MAPPING_TYPE_MASK (3 << 1)
1228 #define PTE_VALID (1 << 0)
1231 * i915_gtt_to_phys - take a GTT address and turn it into a physical one
1233 * @gtt_addr: address to translate
1235 * Some chip functions require allocations from stolen space but need the
1236 * physical address of the memory in question. We use this routine
1237 * to get a physical address suitable for register programming from a given
1240 static unsigned long i915_gtt_to_phys(struct drm_device *dev,
1241 unsigned long gtt_addr)
1244 unsigned long entry, phys;
1245 int gtt_bar = IS_I9XX(dev) ? 0 : 1;
1246 int gtt_offset, gtt_size;
1248 if (IS_I965G(dev)) {
1249 if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
1250 gtt_offset = 2*1024*1024;
1251 gtt_size = 2*1024*1024;
1253 gtt_offset = 512*1024;
1254 gtt_size = 512*1024;
1259 gtt_size = pci_resource_len(dev->pdev, gtt_bar);
1262 gtt = ioremap_wc(pci_resource_start(dev->pdev, gtt_bar) + gtt_offset,
1265 DRM_ERROR("ioremap of GTT failed\n");
1269 entry = *(volatile u32 *)(gtt + (gtt_addr / 1024));
1271 DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, PTE: 0x%08lx\n", gtt_addr, entry);
1273 /* Mask out these reserved bits on this hardware. */
1274 if (!IS_I9XX(dev) || IS_I915G(dev) || IS_I915GM(dev) ||
1275 IS_I945G(dev) || IS_I945GM(dev)) {
1276 entry &= ~PTE_ADDRESS_MASK_HIGH;
1279 /* If it's not a mapping type we know, then bail. */
1280 if ((entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_UNCACHED &&
1281 (entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_CACHED) {
1286 if (!(entry & PTE_VALID)) {
1287 DRM_ERROR("bad GTT entry in stolen space\n");
1294 phys =(entry & PTE_ADDRESS_MASK) |
1295 ((uint64_t)(entry & PTE_ADDRESS_MASK_HIGH) << (32 - 4));
1297 DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, phys addr: 0x%08lx\n", gtt_addr, phys);
1302 static void i915_warn_stolen(struct drm_device *dev)
1304 DRM_ERROR("not enough stolen space for compressed buffer, disabling\n");
1305 DRM_ERROR("hint: you may be able to increase stolen memory size in the BIOS to avoid this\n");
1308 static void i915_setup_compression(struct drm_device *dev, int size)
1310 struct drm_i915_private *dev_priv = dev->dev_private;
1311 struct drm_mm_node *compressed_fb, *compressed_llb;
1312 unsigned long cfb_base;
1313 unsigned long ll_base = 0;
1315 /* Leave 1M for line length buffer & misc. */
1316 compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0);
1317 if (!compressed_fb) {
1318 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1319 i915_warn_stolen(dev);
1323 compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
1324 if (!compressed_fb) {
1325 i915_warn_stolen(dev);
1326 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1330 cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
1332 DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
1333 drm_mm_put_block(compressed_fb);
1336 if (!IS_GM45(dev)) {
1337 compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096,
1339 if (!compressed_llb) {
1340 i915_warn_stolen(dev);
1344 compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
1345 if (!compressed_llb) {
1346 i915_warn_stolen(dev);
1350 ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
1352 DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
1353 drm_mm_put_block(compressed_fb);
1354 drm_mm_put_block(compressed_llb);
1358 dev_priv->cfb_size = size;
1360 dev_priv->compressed_fb = compressed_fb;
1363 g4x_disable_fbc(dev);
1364 I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
1366 i8xx_disable_fbc(dev);
1367 I915_WRITE(FBC_CFB_BASE, cfb_base);
1368 I915_WRITE(FBC_LL_BASE, ll_base);
1369 dev_priv->compressed_llb = compressed_llb;
1372 DRM_DEBUG("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n", cfb_base,
1373 ll_base, size >> 20);
1376 static void i915_cleanup_compression(struct drm_device *dev)
1378 struct drm_i915_private *dev_priv = dev->dev_private;
1380 drm_mm_put_block(dev_priv->compressed_fb);
1382 drm_mm_put_block(dev_priv->compressed_llb);
1385 /* true = enable decode, false = disable decoder */
1386 static unsigned int i915_vga_set_decode(void *cookie, bool state)
1388 struct drm_device *dev = cookie;
1390 intel_modeset_vga_set_state(dev, state);
1392 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1393 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1395 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1398 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1400 struct drm_device *dev = pci_get_drvdata(pdev);
1401 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
1402 if (state == VGA_SWITCHEROO_ON) {
1403 printk(KERN_INFO "i915: switched off\n");
1404 /* i915 resume handler doesn't set to D0 */
1405 pci_set_power_state(dev->pdev, PCI_D0);
1408 printk(KERN_ERR "i915: switched off\n");
1409 i915_suspend(dev, pmm);
1413 static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
1415 struct drm_device *dev = pci_get_drvdata(pdev);
1418 spin_lock(&dev->count_lock);
1419 can_switch = (dev->open_count == 0);
1420 spin_unlock(&dev->count_lock);
1424 static int i915_load_modeset_init(struct drm_device *dev,
1425 unsigned long prealloc_start,
1426 unsigned long prealloc_size,
1427 unsigned long agp_size)
1429 struct drm_i915_private *dev_priv = dev->dev_private;
1430 int fb_bar = IS_I9XX(dev) ? 2 : 0;
1433 dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
1436 /* Basic memrange allocator for stolen space (aka vram) */
1437 drm_mm_init(&dev_priv->vram, 0, prealloc_size);
1438 DRM_INFO("set up %ldM of stolen space\n", prealloc_size / (1024*1024));
1440 /* We're off and running w/KMS */
1441 dev_priv->mm.suspended = 0;
1443 /* Let GEM Manage from end of prealloc space to end of aperture.
1445 * However, leave one page at the end still bound to the scratch page.
1446 * There are a number of places where the hardware apparently
1447 * prefetches past the end of the object, and we've seen multiple
1448 * hangs with the GPU head pointer stuck in a batchbuffer bound
1449 * at the last page of the aperture. One page should be enough to
1450 * keep any prefetching inside of the aperture.
1452 i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
1454 mutex_lock(&dev->struct_mutex);
1455 ret = i915_gem_init_ringbuffer(dev);
1456 mutex_unlock(&dev->struct_mutex);
1460 /* Try to set up FBC with a reasonable compressed buffer size */
1461 if (I915_HAS_FBC(dev) && i915_powersave) {
1464 /* Try to get an 8M buffer... */
1465 if (prealloc_size > (9*1024*1024))
1466 cfb_size = 8*1024*1024;
1467 else /* fall back to 7/8 of the stolen space */
1468 cfb_size = prealloc_size * 7 / 8;
1469 i915_setup_compression(dev, cfb_size);
1472 /* Allow hardware batchbuffers unless told otherwise.
1474 dev_priv->allow_batchbuffer = 1;
1476 ret = intel_init_bios(dev);
1478 DRM_INFO("failed to find VBIOS tables\n");
1480 /* if we have > 1 VGA cards, then disable the radeon VGA resources */
1481 ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
1483 goto destroy_ringbuffer;
1485 ret = vga_switcheroo_register_client(dev->pdev,
1486 i915_switcheroo_set_state,
1487 i915_switcheroo_can_switch);
1489 goto destroy_ringbuffer;
1491 intel_modeset_init(dev);
1493 ret = drm_irq_install(dev);
1495 goto destroy_ringbuffer;
1497 /* Always safe in the mode setting case. */
1498 /* FIXME: do pre/post-mode set stuff in core KMS code */
1499 dev->vblank_disable_allowed = 1;
1502 * Initialize the hardware status page IRQ location.
1505 I915_WRITE(INSTPM, (1 << 5) | (1 << 21));
1507 drm_helper_initial_config(dev);
1512 mutex_lock(&dev->struct_mutex);
1513 i915_gem_cleanup_ringbuffer(dev);
1514 mutex_unlock(&dev->struct_mutex);
1519 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1521 struct drm_i915_master_private *master_priv;
1523 master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1527 master->driver_priv = master_priv;
1531 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1533 struct drm_i915_master_private *master_priv = master->driver_priv;
1540 master->driver_priv = NULL;
1543 static void i915_get_mem_freq(struct drm_device *dev)
1545 drm_i915_private_t *dev_priv = dev->dev_private;
1548 if (!IS_PINEVIEW(dev))
1551 tmp = I915_READ(CLKCFG);
1553 switch (tmp & CLKCFG_FSB_MASK) {
1554 case CLKCFG_FSB_533:
1555 dev_priv->fsb_freq = 533; /* 133*4 */
1557 case CLKCFG_FSB_800:
1558 dev_priv->fsb_freq = 800; /* 200*4 */
1560 case CLKCFG_FSB_667:
1561 dev_priv->fsb_freq = 667; /* 167*4 */
1563 case CLKCFG_FSB_400:
1564 dev_priv->fsb_freq = 400; /* 100*4 */
1568 switch (tmp & CLKCFG_MEM_MASK) {
1569 case CLKCFG_MEM_533:
1570 dev_priv->mem_freq = 533;
1572 case CLKCFG_MEM_667:
1573 dev_priv->mem_freq = 667;
1575 case CLKCFG_MEM_800:
1576 dev_priv->mem_freq = 800;
1582 * i915_driver_load - setup chip and create an initial config
1584 * @flags: startup flags
1586 * The driver load routine has to do several things:
1587 * - drive output discovery via intel_modeset_init()
1588 * - initialize the memory manager
1589 * - allocate initial config memory
1590 * - setup the DRM framebuffer with the allocated memory
1592 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1594 struct drm_i915_private *dev_priv = dev->dev_private;
1595 resource_size_t base, size;
1596 int ret = 0, mmio_bar;
1597 uint32_t agp_size, prealloc_size, prealloc_start;
1599 /* i915 has 4 more counters */
1601 dev->types[6] = _DRM_STAT_IRQ;
1602 dev->types[7] = _DRM_STAT_PRIMARY;
1603 dev->types[8] = _DRM_STAT_SECONDARY;
1604 dev->types[9] = _DRM_STAT_DMA;
1606 dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
1607 if (dev_priv == NULL)
1610 dev->dev_private = (void *)dev_priv;
1611 dev_priv->dev = dev;
1612 dev_priv->info = (struct intel_device_info *) flags;
1614 /* Add register map (needed for suspend/resume) */
1615 mmio_bar = IS_I9XX(dev) ? 0 : 1;
1616 base = drm_get_resource_start(dev, mmio_bar);
1617 size = drm_get_resource_len(dev, mmio_bar);
1619 if (i915_get_bridge_dev(dev)) {
1624 dev_priv->regs = ioremap(base, size);
1625 if (!dev_priv->regs) {
1626 DRM_ERROR("failed to map registers\n");
1631 dev_priv->mm.gtt_mapping =
1632 io_mapping_create_wc(dev->agp->base,
1633 dev->agp->agp_info.aper_size * 1024*1024);
1634 if (dev_priv->mm.gtt_mapping == NULL) {
1639 /* Set up a WC MTRR for non-PAT systems. This is more common than
1640 * one would think, because the kernel disables PAT on first
1641 * generation Core chips because WC PAT gets overridden by a UC
1642 * MTRR if present. Even if a UC MTRR isn't present.
1644 dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
1645 dev->agp->agp_info.aper_size *
1647 MTRR_TYPE_WRCOMB, 1);
1648 if (dev_priv->mm.gtt_mtrr < 0) {
1649 DRM_INFO("MTRR allocation failed. Graphics "
1650 "performance may suffer.\n");
1653 ret = i915_probe_agp(dev, &agp_size, &prealloc_size, &prealloc_start);
1657 dev_priv->wq = create_singlethread_workqueue("i915");
1658 if (dev_priv->wq == NULL) {
1659 DRM_ERROR("Failed to create our workqueue.\n");
1664 /* enable GEM by default */
1665 dev_priv->has_gem = 1;
1667 if (prealloc_size > agp_size * 3 / 4) {
1668 DRM_ERROR("Detected broken video BIOS with %d/%dkB of video "
1670 prealloc_size / 1024, agp_size / 1024);
1671 DRM_ERROR("Disabling GEM. (try reducing stolen memory or "
1672 "updating the BIOS to fix).\n");
1673 dev_priv->has_gem = 0;
1676 dev->driver->get_vblank_counter = i915_get_vblank_counter;
1677 dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
1678 if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
1679 dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
1680 dev->driver->get_vblank_counter = gm45_get_vblank_counter;
1683 /* Try to make sure MCHBAR is enabled before poking at it */
1684 intel_setup_mchbar(dev);
1689 if (!I915_NEED_GFX_HWS(dev)) {
1690 ret = i915_init_phys_hws(dev);
1692 goto out_workqueue_free;
1695 i915_get_mem_freq(dev);
1697 /* On the 945G/GM, the chipset reports the MSI capability on the
1698 * integrated graphics even though the support isn't actually there
1699 * according to the published specs. It doesn't appear to function
1700 * correctly in testing on 945G.
1701 * This may be a side effect of MSI having been made available for PEG
1702 * and the registers being closely associated.
1704 * According to chipset errata, on the 965GM, MSI interrupts may
1705 * be lost or delayed, but we use them anyways to avoid
1706 * stuck interrupts on some machines.
1708 if (!IS_I945G(dev) && !IS_I945GM(dev))
1709 pci_enable_msi(dev->pdev);
1711 spin_lock_init(&dev_priv->user_irq_lock);
1712 spin_lock_init(&dev_priv->error_lock);
1713 dev_priv->user_irq_refcount = 0;
1714 dev_priv->trace_irq_seqno = 0;
1716 ret = drm_vblank_init(dev, I915_NUM_PIPE);
1719 (void) i915_driver_unload(dev);
1723 /* Start out suspended */
1724 dev_priv->mm.suspended = 1;
1726 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1727 ret = i915_load_modeset_init(dev, prealloc_start,
1728 prealloc_size, agp_size);
1730 DRM_ERROR("failed to init modeset\n");
1731 goto out_workqueue_free;
1735 /* Must be done after probing outputs */
1736 intel_opregion_init(dev, 0);
1738 setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed,
1739 (unsigned long) dev);
1743 destroy_workqueue(dev_priv->wq);
1745 io_mapping_free(dev_priv->mm.gtt_mapping);
1747 iounmap(dev_priv->regs);
1749 pci_dev_put(dev_priv->bridge_dev);
1755 int i915_driver_unload(struct drm_device *dev)
1757 struct drm_i915_private *dev_priv = dev->dev_private;
1759 i915_destroy_error_state(dev);
1761 destroy_workqueue(dev_priv->wq);
1762 del_timer_sync(&dev_priv->hangcheck_timer);
1764 io_mapping_free(dev_priv->mm.gtt_mapping);
1765 if (dev_priv->mm.gtt_mtrr >= 0) {
1766 mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
1767 dev->agp->agp_info.aper_size * 1024 * 1024);
1768 dev_priv->mm.gtt_mtrr = -1;
1771 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1773 * free the memory space allocated for the child device
1774 * config parsed from VBT
1776 if (dev_priv->child_dev && dev_priv->child_dev_num) {
1777 kfree(dev_priv->child_dev);
1778 dev_priv->child_dev = NULL;
1779 dev_priv->child_dev_num = 0;
1781 drm_irq_uninstall(dev);
1782 vga_switcheroo_unregister_client(dev->pdev);
1783 vga_client_register(dev->pdev, NULL, NULL, NULL);
1786 if (dev->pdev->msi_enabled)
1787 pci_disable_msi(dev->pdev);
1789 if (dev_priv->regs != NULL)
1790 iounmap(dev_priv->regs);
1792 intel_opregion_free(dev, 0);
1794 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1795 intel_modeset_cleanup(dev);
1797 i915_gem_free_all_phys_object(dev);
1799 mutex_lock(&dev->struct_mutex);
1800 i915_gem_cleanup_ringbuffer(dev);
1801 mutex_unlock(&dev->struct_mutex);
1802 if (I915_HAS_FBC(dev) && i915_powersave)
1803 i915_cleanup_compression(dev);
1804 drm_mm_takedown(&dev_priv->vram);
1805 i915_gem_lastclose(dev);
1807 intel_cleanup_overlay(dev);
1810 intel_teardown_mchbar(dev);
1812 pci_dev_put(dev_priv->bridge_dev);
1813 kfree(dev->dev_private);
1818 int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
1820 struct drm_i915_file_private *i915_file_priv;
1822 DRM_DEBUG_DRIVER("\n");
1823 i915_file_priv = (struct drm_i915_file_private *)
1824 kmalloc(sizeof(*i915_file_priv), GFP_KERNEL);
1826 if (!i915_file_priv)
1829 file_priv->driver_priv = i915_file_priv;
1831 INIT_LIST_HEAD(&i915_file_priv->mm.request_list);
1837 * i915_driver_lastclose - clean up after all DRM clients have exited
1840 * Take care of cleaning up after all DRM clients have exited. In the
1841 * mode setting case, we want to restore the kernel's initial mode (just
1842 * in case the last client left us in a bad state).
1844 * Additionally, in the non-mode setting case, we'll tear down the AGP
1845 * and DMA structures, since the kernel won't be using them, and clea
1848 void i915_driver_lastclose(struct drm_device * dev)
1850 drm_i915_private_t *dev_priv = dev->dev_private;
1852 if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
1853 drm_fb_helper_restore();
1854 vga_switcheroo_process_delayed_switch();
1858 i915_gem_lastclose(dev);
1860 if (dev_priv->agp_heap)
1861 i915_mem_takedown(&(dev_priv->agp_heap));
1863 i915_dma_cleanup(dev);
1866 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1868 drm_i915_private_t *dev_priv = dev->dev_private;
1869 i915_gem_release(dev, file_priv);
1870 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1871 i915_mem_release(dev, file_priv, dev_priv->agp_heap);
1874 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv)
1876 struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;
1878 kfree(i915_file_priv);
1881 struct drm_ioctl_desc i915_ioctls[] = {
1882 DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1883 DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
1884 DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
1885 DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
1886 DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
1887 DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
1888 DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
1889 DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1890 DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
1891 DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
1892 DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1893 DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
1894 DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP, i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1895 DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE, i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1896 DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH ),
1897 DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1898 DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1899 DRM_IOCTL_DEF(DRM_I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1900 DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED),
1901 DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED),
1902 DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1903 DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1904 DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
1905 DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED),
1906 DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1907 DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1908 DRM_IOCTL_DEF(DRM_I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED),
1909 DRM_IOCTL_DEF(DRM_I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED),
1910 DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED),
1911 DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED),
1912 DRM_IOCTL_DEF(DRM_I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED),
1913 DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED),
1914 DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED),
1915 DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED),
1916 DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED),
1917 DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED),
1918 DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
1919 DRM_IOCTL_DEF(DRM_I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),
1920 DRM_IOCTL_DEF(DRM_I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1921 DRM_IOCTL_DEF(DRM_I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1924 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1927 * Determine if the device really is AGP or not.
1929 * All Intel graphics chipsets are treated as AGP, even if they are really
1932 * \param dev The device to be tested.
1935 * A value of 1 is always retured to indictate every i9x5 is AGP.
1937 int i915_driver_device_is_agp(struct drm_device * dev)