This is preparation for supporting multiple ringbuffers on Ironlake.
The non-copy-and-paste changes are:
- de-staticing functions
- I915_GEM_GPU_DOMAINS moving to i915_drv.h to be used by both files.
- i915_gem_add_request had only half its implementation
copy-and-pasted out of the middle of it.
intel_fb.o \
intel_tv.o \
intel_dvo.o \
+ intel_ringbuffer.o \
intel_overlay.o \
dvo_ch7xxx.o \
dvo_ch7017.o \
#include <linux/vga_switcheroo.h>
#include <linux/slab.h>
-/* Really want an OS-independent resettable timer. Would like to have
- * this loop run for (eg) 3 sec, but have the timer reset every time
- * the head pointer changes, so that EBUSY only happens if the ring
- * actually stalls for (eg) 3 seconds.
- */
-int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
- u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
- u32 last_acthd = I915_READ(acthd_reg);
- u32 acthd;
- u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
- int i;
-
- trace_i915_ring_wait_begin (dev);
-
- for (i = 0; i < 100000; i++) {
- ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
- acthd = I915_READ(acthd_reg);
- ring->space = ring->head - (ring->tail + 8);
- if (ring->space < 0)
- ring->space += ring->Size;
- if (ring->space >= n) {
- trace_i915_ring_wait_end (dev);
- return 0;
- }
-
- if (dev->primary->master) {
- struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
- if (master_priv->sarea_priv)
- master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
- }
-
-
- if (ring->head != last_head)
- i = 0;
- if (acthd != last_acthd)
- i = 0;
-
- last_head = ring->head;
- last_acthd = acthd;
- msleep_interruptible(10);
-
- }
-
- trace_i915_ring_wait_end (dev);
- return -EBUSY;
-}
-
-/* As a ringbuffer is only allowed to wrap between instructions, fill
- * the tail with NOOPs.
- */
-int i915_wrap_ring(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- volatile unsigned int *virt;
- int rem;
-
- rem = dev_priv->ring.Size - dev_priv->ring.tail;
- if (dev_priv->ring.space < rem) {
- int ret = i915_wait_ring(dev, rem, __func__);
- if (ret)
- return ret;
- }
- dev_priv->ring.space -= rem;
-
- virt = (unsigned int *)
- (dev_priv->ring.virtual_start + dev_priv->ring.tail);
- rem /= 4;
- while (rem--)
- *virt++ = MI_NOOP;
-
- dev_priv->ring.tail = 0;
-
- return 0;
-}
/**
* Sets up the hardware status page for devices that need a physical address
#define _I915_DRV_H_
#include "i915_reg.h"
+#include "i915_drm.h"
#include "intel_bios.h"
#include <linux/io-mapping.h>
#define I915_NUM_PIPE 2
+#define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
+
/* Interface history:
*
* 1.1: Original.
extern int i915_vblank_swap(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern void i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask);
+extern void i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask);
+void ironlake_enable_graphics_irq(drm_i915_private_t *dev_priv, u32 mask);
+void ironlake_disable_graphics_irq(drm_i915_private_t *dev_priv, u32 mask);
void
i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
void i915_gem_shrinker_init(void);
void i915_gem_shrinker_exit(void);
+int i915_gem_init_pipe_control(struct drm_device *dev);
+void i915_gem_cleanup_pipe_control(struct drm_device *dev);
/* i915_gem_tiling.c */
void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
static inline void opregion_enable_asle(struct drm_device *dev) { return; }
#endif
+/* intel_ringbuffer.c */
+extern void i915_gem_flush(struct drm_device *dev,
+ uint32_t invalidate_domains,
+ uint32_t flush_domains);
+extern int i915_dispatch_gem_execbuffer(struct drm_device *dev,
+ struct drm_i915_gem_execbuffer2 *exec,
+ struct drm_clip_rect *cliprects,
+ uint64_t exec_offset);
+extern uint32_t i915_ring_add_request(struct drm_device *dev);
+
/* modesetting */
extern void intel_modeset_init(struct drm_device *dev);
extern void intel_modeset_cleanup(struct drm_device *dev);
#include <linux/swap.h>
#include <linux/pci.h>
-#define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
-
static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj);
static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj);
static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj);
}
}
}
-
-#define PIPE_CONTROL_FLUSH(addr) \
- OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | \
- PIPE_CONTROL_DEPTH_STALL); \
- OUT_RING(addr | PIPE_CONTROL_GLOBAL_GTT); \
- OUT_RING(0); \
- OUT_RING(0); \
-
-/**
- * Creates a new sequence number, emitting a write of it to the status page
- * plus an interrupt, which will trigger i915_user_interrupt_handler.
- *
- * Must be called with struct_lock held.
- *
- * Returned sequence numbers are nonzero on success.
- */
uint32_t
i915_add_request(struct drm_device *dev, struct drm_file *file_priv,
uint32_t flush_domains)
struct drm_i915_gem_request *request;
uint32_t seqno;
int was_empty;
- RING_LOCALS;
if (file_priv != NULL)
i915_file_priv = file_priv->driver_priv;
if (request == NULL)
return 0;
- /* Grab the seqno we're going to make this request be, and bump the
- * next (skipping 0 so it can be the reserved no-seqno value).
- */
- seqno = dev_priv->mm.next_gem_seqno;
- dev_priv->mm.next_gem_seqno++;
- if (dev_priv->mm.next_gem_seqno == 0)
- dev_priv->mm.next_gem_seqno++;
-
- if (HAS_PIPE_CONTROL(dev)) {
- u32 scratch_addr = dev_priv->seqno_gfx_addr + 128;
-
- /*
- * Workaround qword write incoherence by flushing the
- * PIPE_NOTIFY buffers out to memory before requesting
- * an interrupt.
- */
- BEGIN_LP_RING(32);
- OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE |
- PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH);
- OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT);
- OUT_RING(seqno);
- OUT_RING(0);
- PIPE_CONTROL_FLUSH(scratch_addr);
- scratch_addr += 128; /* write to separate cachelines */
- PIPE_CONTROL_FLUSH(scratch_addr);
- scratch_addr += 128;
- PIPE_CONTROL_FLUSH(scratch_addr);
- scratch_addr += 128;
- PIPE_CONTROL_FLUSH(scratch_addr);
- scratch_addr += 128;
- PIPE_CONTROL_FLUSH(scratch_addr);
- scratch_addr += 128;
- PIPE_CONTROL_FLUSH(scratch_addr);
- OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE |
- PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH |
- PIPE_CONTROL_NOTIFY);
- OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT);
- OUT_RING(seqno);
- OUT_RING(0);
- ADVANCE_LP_RING();
- } else {
- BEGIN_LP_RING(4);
- OUT_RING(MI_STORE_DWORD_INDEX);
- OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
- OUT_RING(seqno);
-
- OUT_RING(MI_USER_INTERRUPT);
- ADVANCE_LP_RING();
- }
+ seqno = i915_ring_add_request(dev);
DRM_DEBUG_DRIVER("%d\n", seqno);
return i915_do_wait_request(dev, seqno, 1);
}
-static void
-i915_gem_flush(struct drm_device *dev,
- uint32_t invalidate_domains,
- uint32_t flush_domains)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- uint32_t cmd;
- RING_LOCALS;
-
-#if WATCH_EXEC
- DRM_INFO("%s: invalidate %08x flush %08x\n", __func__,
- invalidate_domains, flush_domains);
-#endif
- trace_i915_gem_request_flush(dev, dev_priv->mm.next_gem_seqno,
- invalidate_domains, flush_domains);
-
- if (flush_domains & I915_GEM_DOMAIN_CPU)
- drm_agp_chipset_flush(dev);
-
- if ((invalidate_domains | flush_domains) & I915_GEM_GPU_DOMAINS) {
- /*
- * read/write caches:
- *
- * I915_GEM_DOMAIN_RENDER is always invalidated, but is
- * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is
- * also flushed at 2d versus 3d pipeline switches.
- *
- * read-only caches:
- *
- * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if
- * MI_READ_FLUSH is set, and is always flushed on 965.
- *
- * I915_GEM_DOMAIN_COMMAND may not exist?
- *
- * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is
- * invalidated when MI_EXE_FLUSH is set.
- *
- * I915_GEM_DOMAIN_VERTEX, which exists on 965, is
- * invalidated with every MI_FLUSH.
- *
- * TLBs:
- *
- * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND
- * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and
- * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER
- * are flushed at any MI_FLUSH.
- */
-
- cmd = MI_FLUSH | MI_NO_WRITE_FLUSH;
- if ((invalidate_domains|flush_domains) &
- I915_GEM_DOMAIN_RENDER)
- cmd &= ~MI_NO_WRITE_FLUSH;
- if (!IS_I965G(dev)) {
- /*
- * On the 965, the sampler cache always gets flushed
- * and this bit is reserved.
- */
- if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER)
- cmd |= MI_READ_FLUSH;
- }
- if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION)
- cmd |= MI_EXE_FLUSH;
-
-#if WATCH_EXEC
- DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd);
-#endif
- BEGIN_LP_RING(2);
- OUT_RING(cmd);
- OUT_RING(MI_NOOP);
- ADVANCE_LP_RING();
- }
-}
/**
* Ensures that all rendering to the object has completed and the object is
return 0;
}
-/** Dispatch a batchbuffer to the ring
- */
-static int
-i915_dispatch_gem_execbuffer(struct drm_device *dev,
- struct drm_i915_gem_execbuffer2 *exec,
- struct drm_clip_rect *cliprects,
- uint64_t exec_offset)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- int nbox = exec->num_cliprects;
- int i = 0, count;
- uint32_t exec_start, exec_len;
- RING_LOCALS;
-
- exec_start = (uint32_t) exec_offset + exec->batch_start_offset;
- exec_len = (uint32_t) exec->batch_len;
-
- trace_i915_gem_request_submit(dev, dev_priv->mm.next_gem_seqno + 1);
-
- count = nbox ? nbox : 1;
-
- for (i = 0; i < count; i++) {
- if (i < nbox) {
- int ret = i915_emit_box(dev, cliprects, i,
- exec->DR1, exec->DR4);
- if (ret)
- return ret;
- }
-
- if (IS_I830(dev) || IS_845G(dev)) {
- BEGIN_LP_RING(4);
- OUT_RING(MI_BATCH_BUFFER);
- OUT_RING(exec_start | MI_BATCH_NON_SECURE);
- OUT_RING(exec_start + exec_len - 4);
- OUT_RING(0);
- ADVANCE_LP_RING();
- } else {
- BEGIN_LP_RING(2);
- if (IS_I965G(dev)) {
- OUT_RING(MI_BATCH_BUFFER_START |
- (2 << 6) |
- MI_BATCH_NON_SECURE_I965);
- OUT_RING(exec_start);
- } else {
- OUT_RING(MI_BATCH_BUFFER_START |
- (2 << 6));
- OUT_RING(exec_start | MI_BATCH_NON_SECURE);
- }
- ADVANCE_LP_RING();
- }
- }
-
- /* XXX breadcrumb */
- return 0;
-}
-
/* Throttle our rendering by waiting until the ring has completed our requests
* emitted over 20 msec ago.
*
* 965+ support PIPE_CONTROL commands, which provide finer grained control
* over cache flushing.
*/
-static int
+int
i915_gem_init_pipe_control(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
return ret;
}
-static int
-i915_gem_init_hws(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
- int ret;
-
- /* If we need a physical address for the status page, it's already
- * initialized at driver load time.
- */
- if (!I915_NEED_GFX_HWS(dev))
- return 0;
-
- obj = i915_gem_alloc_object(dev, 4096);
- if (obj == NULL) {
- DRM_ERROR("Failed to allocate status page\n");
- ret = -ENOMEM;
- goto err;
- }
- obj_priv = to_intel_bo(obj);
- obj_priv->agp_type = AGP_USER_CACHED_MEMORY;
-
- ret = i915_gem_object_pin(obj, 4096);
- if (ret != 0) {
- drm_gem_object_unreference(obj);
- goto err_unref;
- }
-
- dev_priv->status_gfx_addr = obj_priv->gtt_offset;
-
- dev_priv->hw_status_page = kmap(obj_priv->pages[0]);
- if (dev_priv->hw_status_page == NULL) {
- DRM_ERROR("Failed to map status page.\n");
- memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
- ret = -EINVAL;
- goto err_unpin;
- }
-
- if (HAS_PIPE_CONTROL(dev)) {
- ret = i915_gem_init_pipe_control(dev);
- if (ret)
- goto err_unpin;
- }
-
- dev_priv->hws_obj = obj;
- memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
- if (IS_GEN6(dev)) {
- I915_WRITE(HWS_PGA_GEN6, dev_priv->status_gfx_addr);
- I915_READ(HWS_PGA_GEN6); /* posting read */
- } else {
- I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
- I915_READ(HWS_PGA); /* posting read */
- }
- DRM_DEBUG_DRIVER("hws offset: 0x%08x\n", dev_priv->status_gfx_addr);
-
- return 0;
-
-err_unpin:
- i915_gem_object_unpin(obj);
-err_unref:
- drm_gem_object_unreference(obj);
-err:
- return 0;
-}
-
-static void
+void
i915_gem_cleanup_pipe_control(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
dev_priv->seqno_page = NULL;
}
-static void
-i915_gem_cleanup_hws(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
-
- if (dev_priv->hws_obj == NULL)
- return;
-
- obj = dev_priv->hws_obj;
- obj_priv = to_intel_bo(obj);
-
- kunmap(obj_priv->pages[0]);
- i915_gem_object_unpin(obj);
- drm_gem_object_unreference(obj);
- dev_priv->hws_obj = NULL;
-
- memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
- dev_priv->hw_status_page = NULL;
-
- if (HAS_PIPE_CONTROL(dev))
- i915_gem_cleanup_pipe_control(dev);
-
- /* Write high address into HWS_PGA when disabling. */
- I915_WRITE(HWS_PGA, 0x1ffff000);
-}
-
-int
-i915_gem_init_ringbuffer(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
- drm_i915_ring_buffer_t *ring = &dev_priv->ring;
- int ret;
- u32 head;
-
- ret = i915_gem_init_hws(dev);
- if (ret != 0)
- return ret;
-
- obj = i915_gem_alloc_object(dev, 128 * 1024);
- if (obj == NULL) {
- DRM_ERROR("Failed to allocate ringbuffer\n");
- i915_gem_cleanup_hws(dev);
- return -ENOMEM;
- }
- obj_priv = to_intel_bo(obj);
-
- ret = i915_gem_object_pin(obj, 4096);
- if (ret != 0) {
- drm_gem_object_unreference(obj);
- i915_gem_cleanup_hws(dev);
- return ret;
- }
-
- /* Set up the kernel mapping for the ring. */
- ring->Size = obj->size;
-
- ring->map.offset = dev->agp->base + obj_priv->gtt_offset;
- ring->map.size = obj->size;
- ring->map.type = 0;
- ring->map.flags = 0;
- ring->map.mtrr = 0;
-
- drm_core_ioremap_wc(&ring->map, dev);
- if (ring->map.handle == NULL) {
- DRM_ERROR("Failed to map ringbuffer.\n");
- memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
- i915_gem_object_unpin(obj);
- drm_gem_object_unreference(obj);
- i915_gem_cleanup_hws(dev);
- return -EINVAL;
- }
- ring->ring_obj = obj;
- ring->virtual_start = ring->map.handle;
-
- /* Stop the ring if it's running. */
- I915_WRITE(PRB0_CTL, 0);
- I915_WRITE(PRB0_TAIL, 0);
- I915_WRITE(PRB0_HEAD, 0);
-
- /* Initialize the ring. */
- I915_WRITE(PRB0_START, obj_priv->gtt_offset);
- head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
-
- /* G45 ring initialization fails to reset head to zero */
- if (head != 0) {
- DRM_ERROR("Ring head not reset to zero "
- "ctl %08x head %08x tail %08x start %08x\n",
- I915_READ(PRB0_CTL),
- I915_READ(PRB0_HEAD),
- I915_READ(PRB0_TAIL),
- I915_READ(PRB0_START));
- I915_WRITE(PRB0_HEAD, 0);
-
- DRM_ERROR("Ring head forced to zero "
- "ctl %08x head %08x tail %08x start %08x\n",
- I915_READ(PRB0_CTL),
- I915_READ(PRB0_HEAD),
- I915_READ(PRB0_TAIL),
- I915_READ(PRB0_START));
- }
-
- I915_WRITE(PRB0_CTL,
- ((obj->size - 4096) & RING_NR_PAGES) |
- RING_NO_REPORT |
- RING_VALID);
-
- head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
-
- /* If the head is still not zero, the ring is dead */
- if (head != 0) {
- DRM_ERROR("Ring initialization failed "
- "ctl %08x head %08x tail %08x start %08x\n",
- I915_READ(PRB0_CTL),
- I915_READ(PRB0_HEAD),
- I915_READ(PRB0_TAIL),
- I915_READ(PRB0_START));
- return -EIO;
- }
-
- /* Update our cache of the ring state */
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- i915_kernel_lost_context(dev);
- else {
- ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
- ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
- ring->space = ring->head - (ring->tail + 8);
- if (ring->space < 0)
- ring->space += ring->Size;
- }
-
- if (IS_I9XX(dev) && !IS_GEN3(dev)) {
- I915_WRITE(MI_MODE,
- (VS_TIMER_DISPATCH) << 16 | VS_TIMER_DISPATCH);
- }
-
- return 0;
-}
-
-void
-i915_gem_cleanup_ringbuffer(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
-
- if (dev_priv->ring.ring_obj == NULL)
- return;
-
- drm_core_ioremapfree(&dev_priv->ring.map, dev);
-
- i915_gem_object_unpin(dev_priv->ring.ring_obj);
- drm_gem_object_unreference(dev_priv->ring.ring_obj);
- dev_priv->ring.ring_obj = NULL;
- memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
-
- i915_gem_cleanup_hws(dev);
-}
-
int
i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
}
}
-static inline void
+void
ironlake_disable_graphics_irq(drm_i915_private_t *dev_priv, u32 mask)
{
if ((dev_priv->gt_irq_mask_reg & mask) != mask) {
}
}
-static inline void
+void
i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask)
{
if ((dev_priv->irq_mask_reg & mask) != mask) {
return dev_priv->counter;
}
-void i915_user_irq_get(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- unsigned long irqflags;
-
- spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
- if (dev->irq_enabled && (++dev_priv->user_irq_refcount == 1)) {
- if (HAS_PCH_SPLIT(dev))
- ironlake_enable_graphics_irq(dev_priv, GT_PIPE_NOTIFY);
- else
- i915_enable_irq(dev_priv, I915_USER_INTERRUPT);
- }
- spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
-}
-
-void i915_user_irq_put(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- unsigned long irqflags;
-
- spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
- BUG_ON(dev->irq_enabled && dev_priv->user_irq_refcount <= 0);
- if (dev->irq_enabled && (--dev_priv->user_irq_refcount == 0)) {
- if (HAS_PCH_SPLIT(dev))
- ironlake_disable_graphics_irq(dev_priv, GT_PIPE_NOTIFY);
- else
- i915_disable_irq(dev_priv, I915_USER_INTERRUPT);
- }
- spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
-}
-
void i915_trace_irq_get(struct drm_device *dev, u32 seqno)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
--- /dev/null
+/*
+ * Copyright © 2008-2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Eric Anholt <eric@anholt.net>
+ * Zou Nan hai <nanhai.zou@intel.com>
+ * Xiang Hai hao<haihao.xiang@intel.com>
+ *
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "i915_drm.h"
+#include "i915_drv.h"
+#include "i915_trace.h"
+#include "intel_drv.h"
+
+void
+i915_gem_flush(struct drm_device *dev,
+ uint32_t invalidate_domains,
+ uint32_t flush_domains)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ uint32_t cmd;
+ RING_LOCALS;
+
+#if WATCH_EXEC
+ DRM_INFO("%s: invalidate %08x flush %08x\n", __func__,
+ invalidate_domains, flush_domains);
+#endif
+ trace_i915_gem_request_flush(dev, dev_priv->mm.next_gem_seqno,
+ invalidate_domains, flush_domains);
+
+ if (flush_domains & I915_GEM_DOMAIN_CPU)
+ drm_agp_chipset_flush(dev);
+
+ if ((invalidate_domains | flush_domains) & I915_GEM_GPU_DOMAINS) {
+ /*
+ * read/write caches:
+ *
+ * I915_GEM_DOMAIN_RENDER is always invalidated, but is
+ * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is
+ * also flushed at 2d versus 3d pipeline switches.
+ *
+ * read-only caches:
+ *
+ * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if
+ * MI_READ_FLUSH is set, and is always flushed on 965.
+ *
+ * I915_GEM_DOMAIN_COMMAND may not exist?
+ *
+ * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is
+ * invalidated when MI_EXE_FLUSH is set.
+ *
+ * I915_GEM_DOMAIN_VERTEX, which exists on 965, is
+ * invalidated with every MI_FLUSH.
+ *
+ * TLBs:
+ *
+ * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND
+ * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and
+ * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER
+ * are flushed at any MI_FLUSH.
+ */
+
+ cmd = MI_FLUSH | MI_NO_WRITE_FLUSH;
+ if ((invalidate_domains|flush_domains) &
+ I915_GEM_DOMAIN_RENDER)
+ cmd &= ~MI_NO_WRITE_FLUSH;
+ if (!IS_I965G(dev)) {
+ /*
+ * On the 965, the sampler cache always gets flushed
+ * and this bit is reserved.
+ */
+ if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER)
+ cmd |= MI_READ_FLUSH;
+ }
+ if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION)
+ cmd |= MI_EXE_FLUSH;
+
+#if WATCH_EXEC
+ DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd);
+#endif
+ BEGIN_LP_RING(2);
+ OUT_RING(cmd);
+ OUT_RING(MI_NOOP);
+ ADVANCE_LP_RING();
+ }
+
+}
+#define PIPE_CONTROL_FLUSH(addr) \
+ OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | \
+ PIPE_CONTROL_DEPTH_STALL); \
+ OUT_RING(addr | PIPE_CONTROL_GLOBAL_GTT); \
+ OUT_RING(0); \
+ OUT_RING(0); \
+
+/**
+ * Creates a new sequence number, emitting a write of it to the status page
+ * plus an interrupt, which will trigger i915_user_interrupt_handler.
+ *
+ * Must be called with struct_lock held.
+ *
+ * Returned sequence numbers are nonzero on success.
+ */
+uint32_t
+i915_ring_add_request(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ uint32_t seqno;
+ RING_LOCALS;
+
+ /* Grab the seqno we're going to make this request be, and bump the
+ * next (skipping 0 so it can be the reserved no-seqno value).
+ */
+ seqno = dev_priv->mm.next_gem_seqno;
+ dev_priv->mm.next_gem_seqno++;
+ if (dev_priv->mm.next_gem_seqno == 0)
+ dev_priv->mm.next_gem_seqno++;
+
+ if (HAS_PIPE_CONTROL(dev)) {
+ u32 scratch_addr = dev_priv->seqno_gfx_addr + 128;
+
+ /*
+ * Workaround qword write incoherence by flushing the
+ * PIPE_NOTIFY buffers out to memory before requesting
+ * an interrupt.
+ */
+ BEGIN_LP_RING(32);
+ OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE |
+ PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH);
+ OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT);
+ OUT_RING(seqno);
+ OUT_RING(0);
+ PIPE_CONTROL_FLUSH(scratch_addr);
+ scratch_addr += 128; /* write to separate cachelines */
+ PIPE_CONTROL_FLUSH(scratch_addr);
+ scratch_addr += 128;
+ PIPE_CONTROL_FLUSH(scratch_addr);
+ scratch_addr += 128;
+ PIPE_CONTROL_FLUSH(scratch_addr);
+ scratch_addr += 128;
+ PIPE_CONTROL_FLUSH(scratch_addr);
+ scratch_addr += 128;
+ PIPE_CONTROL_FLUSH(scratch_addr);
+ OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE |
+ PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH |
+ PIPE_CONTROL_NOTIFY);
+ OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT);
+ OUT_RING(seqno);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+ } else {
+ BEGIN_LP_RING(4);
+ OUT_RING(MI_STORE_DWORD_INDEX);
+ OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
+ OUT_RING(seqno);
+
+ OUT_RING(MI_USER_INTERRUPT);
+ ADVANCE_LP_RING();
+ }
+ return seqno;
+}
+
+void i915_user_irq_get(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ unsigned long irqflags;
+
+ spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
+ if (dev->irq_enabled && (++dev_priv->user_irq_refcount == 1)) {
+ if (HAS_PCH_SPLIT(dev))
+ ironlake_enable_graphics_irq(dev_priv, GT_PIPE_NOTIFY);
+ else
+ i915_enable_irq(dev_priv, I915_USER_INTERRUPT);
+ }
+ spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
+}
+
+void i915_user_irq_put(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ unsigned long irqflags;
+
+ spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
+ BUG_ON(dev->irq_enabled && dev_priv->user_irq_refcount <= 0);
+ if (dev->irq_enabled && (--dev_priv->user_irq_refcount == 0)) {
+ if (HAS_PCH_SPLIT(dev))
+ ironlake_disable_graphics_irq(dev_priv, GT_PIPE_NOTIFY);
+ else
+ i915_disable_irq(dev_priv, I915_USER_INTERRUPT);
+ }
+ spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
+}
+
+/** Dispatch a batchbuffer to the ring
+ */
+int
+i915_dispatch_gem_execbuffer(struct drm_device *dev,
+ struct drm_i915_gem_execbuffer2 *exec,
+ struct drm_clip_rect *cliprects,
+ uint64_t exec_offset)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int nbox = exec->num_cliprects;
+ int i = 0, count;
+ uint32_t exec_start, exec_len;
+ RING_LOCALS;
+
+ exec_start = (uint32_t) exec_offset + exec->batch_start_offset;
+ exec_len = (uint32_t) exec->batch_len;
+
+ trace_i915_gem_request_submit(dev, dev_priv->mm.next_gem_seqno + 1);
+
+ count = nbox ? nbox : 1;
+
+ for (i = 0; i < count; i++) {
+ if (i < nbox) {
+ int ret = i915_emit_box(dev, cliprects, i,
+ exec->DR1, exec->DR4);
+ if (ret)
+ return ret;
+ }
+
+ if (IS_I830(dev) || IS_845G(dev)) {
+ BEGIN_LP_RING(4);
+ OUT_RING(MI_BATCH_BUFFER);
+ OUT_RING(exec_start | MI_BATCH_NON_SECURE);
+ OUT_RING(exec_start + exec_len - 4);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+ } else {
+ BEGIN_LP_RING(2);
+ if (IS_I965G(dev)) {
+ OUT_RING(MI_BATCH_BUFFER_START |
+ (2 << 6) |
+ MI_BATCH_NON_SECURE_I965);
+ OUT_RING(exec_start);
+ } else {
+ OUT_RING(MI_BATCH_BUFFER_START |
+ (2 << 6));
+ OUT_RING(exec_start | MI_BATCH_NON_SECURE);
+ }
+ ADVANCE_LP_RING();
+ }
+ }
+
+ /* XXX breadcrumb */
+ return 0;
+}
+
+static void
+i915_gem_cleanup_hws(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_gem_object *obj;
+ struct drm_i915_gem_object *obj_priv;
+
+ if (dev_priv->hws_obj == NULL)
+ return;
+
+ obj = dev_priv->hws_obj;
+ obj_priv = to_intel_bo(obj);
+
+ kunmap(obj_priv->pages[0]);
+ i915_gem_object_unpin(obj);
+ drm_gem_object_unreference(obj);
+ dev_priv->hws_obj = NULL;
+
+ memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
+ dev_priv->hw_status_page = NULL;
+
+ if (HAS_PIPE_CONTROL(dev))
+ i915_gem_cleanup_pipe_control(dev);
+
+ /* Write high address into HWS_PGA when disabling. */
+ I915_WRITE(HWS_PGA, 0x1ffff000);
+}
+
+static int
+i915_gem_init_hws(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_gem_object *obj;
+ struct drm_i915_gem_object *obj_priv;
+ int ret;
+
+ /* If we need a physical address for the status page, it's already
+ * initialized at driver load time.
+ */
+ if (!I915_NEED_GFX_HWS(dev))
+ return 0;
+
+ obj = i915_gem_alloc_object(dev, 4096);
+ if (obj == NULL) {
+ DRM_ERROR("Failed to allocate status page\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+ obj_priv = to_intel_bo(obj);
+ obj_priv->agp_type = AGP_USER_CACHED_MEMORY;
+
+ ret = i915_gem_object_pin(obj, 4096);
+ if (ret != 0) {
+ drm_gem_object_unreference(obj);
+ goto err_unref;
+ }
+
+ dev_priv->status_gfx_addr = obj_priv->gtt_offset;
+
+ dev_priv->hw_status_page = kmap(obj_priv->pages[0]);
+ if (dev_priv->hw_status_page == NULL) {
+ DRM_ERROR("Failed to map status page.\n");
+ memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
+ ret = -EINVAL;
+ goto err_unpin;
+ }
+
+ if (HAS_PIPE_CONTROL(dev)) {
+ ret = i915_gem_init_pipe_control(dev);
+ if (ret)
+ goto err_unpin;
+ }
+
+ dev_priv->hws_obj = obj;
+ memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
+ if (IS_GEN6(dev)) {
+ I915_WRITE(HWS_PGA_GEN6, dev_priv->status_gfx_addr);
+ I915_READ(HWS_PGA_GEN6); /* posting read */
+ } else {
+ I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
+ I915_READ(HWS_PGA); /* posting read */
+ }
+ DRM_DEBUG_DRIVER("hws offset: 0x%08x\n", dev_priv->status_gfx_addr);
+
+ return 0;
+
+err_unpin:
+ i915_gem_object_unpin(obj);
+err_unref:
+ drm_gem_object_unreference(obj);
+err:
+ return 0;
+}
+
+int
+i915_gem_init_ringbuffer(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_gem_object *obj;
+ struct drm_i915_gem_object *obj_priv;
+ drm_i915_ring_buffer_t *ring = &dev_priv->ring;
+ int ret;
+ u32 head;
+
+ ret = i915_gem_init_hws(dev);
+ if (ret != 0)
+ return ret;
+
+ obj = i915_gem_alloc_object(dev, 128 * 1024);
+ if (obj == NULL) {
+ DRM_ERROR("Failed to allocate ringbuffer\n");
+ i915_gem_cleanup_hws(dev);
+ return -ENOMEM;
+ }
+ obj_priv = to_intel_bo(obj);
+
+ ret = i915_gem_object_pin(obj, 4096);
+ if (ret != 0) {
+ drm_gem_object_unreference(obj);
+ i915_gem_cleanup_hws(dev);
+ return ret;
+ }
+
+ /* Set up the kernel mapping for the ring. */
+ ring->Size = obj->size;
+
+ ring->map.offset = dev->agp->base + obj_priv->gtt_offset;
+ ring->map.size = obj->size;
+ ring->map.type = 0;
+ ring->map.flags = 0;
+ ring->map.mtrr = 0;
+
+ drm_core_ioremap_wc(&ring->map, dev);
+ if (ring->map.handle == NULL) {
+ DRM_ERROR("Failed to map ringbuffer.\n");
+ memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
+ i915_gem_object_unpin(obj);
+ drm_gem_object_unreference(obj);
+ i915_gem_cleanup_hws(dev);
+ return -EINVAL;
+ }
+ ring->ring_obj = obj;
+ ring->virtual_start = ring->map.handle;
+
+ /* Stop the ring if it's running. */
+ I915_WRITE(PRB0_CTL, 0);
+ I915_WRITE(PRB0_TAIL, 0);
+ I915_WRITE(PRB0_HEAD, 0);
+
+ /* Initialize the ring. */
+ I915_WRITE(PRB0_START, obj_priv->gtt_offset);
+ head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
+
+ /* G45 ring initialization fails to reset head to zero */
+ if (head != 0) {
+ DRM_ERROR("Ring head not reset to zero "
+ "ctl %08x head %08x tail %08x start %08x\n",
+ I915_READ(PRB0_CTL),
+ I915_READ(PRB0_HEAD),
+ I915_READ(PRB0_TAIL),
+ I915_READ(PRB0_START));
+ I915_WRITE(PRB0_HEAD, 0);
+
+ DRM_ERROR("Ring head forced to zero "
+ "ctl %08x head %08x tail %08x start %08x\n",
+ I915_READ(PRB0_CTL),
+ I915_READ(PRB0_HEAD),
+ I915_READ(PRB0_TAIL),
+ I915_READ(PRB0_START));
+ }
+
+ I915_WRITE(PRB0_CTL,
+ ((obj->size - 4096) & RING_NR_PAGES) |
+ RING_NO_REPORT |
+ RING_VALID);
+
+ head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
+
+ /* If the head is still not zero, the ring is dead */
+ if (head != 0) {
+ DRM_ERROR("Ring initialization failed "
+ "ctl %08x head %08x tail %08x start %08x\n",
+ I915_READ(PRB0_CTL),
+ I915_READ(PRB0_HEAD),
+ I915_READ(PRB0_TAIL),
+ I915_READ(PRB0_START));
+ return -EIO;
+ }
+
+ /* Update our cache of the ring state */
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ i915_kernel_lost_context(dev);
+ else {
+ ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
+ ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
+ ring->space = ring->head - (ring->tail + 8);
+ if (ring->space < 0)
+ ring->space += ring->Size;
+ }
+
+ if (IS_I9XX(dev) && !IS_GEN3(dev)) {
+ I915_WRITE(MI_MODE,
+ (VS_TIMER_DISPATCH) << 16 | VS_TIMER_DISPATCH);
+ }
+
+ return 0;
+}
+
+void
+i915_gem_cleanup_ringbuffer(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ if (dev_priv->ring.ring_obj == NULL)
+ return;
+
+ drm_core_ioremapfree(&dev_priv->ring.map, dev);
+
+ i915_gem_object_unpin(dev_priv->ring.ring_obj);
+ drm_gem_object_unreference(dev_priv->ring.ring_obj);
+ dev_priv->ring.ring_obj = NULL;
+ memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
+
+ i915_gem_cleanup_hws(dev);
+}
+
+/* As a ringbuffer is only allowed to wrap between instructions, fill
+ * the tail with NOOPs.
+ */
+int i915_wrap_ring(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ volatile unsigned int *virt;
+ int rem;
+
+ rem = dev_priv->ring.Size - dev_priv->ring.tail;
+ if (dev_priv->ring.space < rem) {
+ int ret = i915_wait_ring(dev, rem, __func__);
+ if (ret)
+ return ret;
+ }
+ dev_priv->ring.space -= rem;
+
+ virt = (unsigned int *)
+ (dev_priv->ring.virtual_start + dev_priv->ring.tail);
+ rem /= 4;
+ while (rem--)
+ *virt++ = MI_NOOP;
+
+ dev_priv->ring.tail = 0;
+
+ return 0;
+}
+
+int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
+ u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
+ u32 last_acthd = I915_READ(acthd_reg);
+ u32 acthd;
+ u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
+ int i;
+
+ trace_i915_ring_wait_begin (dev);
+
+ for (i = 0; i < 100000; i++) {
+ ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
+ acthd = I915_READ(acthd_reg);
+ ring->space = ring->head - (ring->tail + 8);
+ if (ring->space < 0)
+ ring->space += ring->Size;
+ if (ring->space >= n) {
+ trace_i915_ring_wait_end (dev);
+ return 0;
+ }
+
+ if (dev->primary->master) {
+ struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
+ if (master_priv->sarea_priv)
+ master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
+ }
+
+
+ if (ring->head != last_head)
+ i = 0;
+ if (acthd != last_acthd)
+ i = 0;
+
+ last_head = ring->head;
+ last_acthd = acthd;
+ msleep_interruptible(10);
+
+ }
+
+ trace_i915_ring_wait_end (dev);
+ return -EBUSY;
+}
git.openpandora.org / pandora-kernel.git / commitdiff