| /* |
| * 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_drv.h" |
| #include "i915_drm.h" |
| #include "i915_trace.h" |
| #include "intel_drv.h" |
| |
| static inline int ring_space(struct intel_ring_buffer *ring) |
| { |
| int space = (ring->head & HEAD_ADDR) - (ring->tail + 8); |
| if (space < 0) |
| space += ring->size; |
| return space; |
| } |
| |
| static u32 i915_gem_get_seqno(struct drm_device *dev) |
| { |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| u32 seqno; |
| |
| seqno = dev_priv->next_seqno; |
| |
| /* reserve 0 for non-seqno */ |
| if (++dev_priv->next_seqno == 0) |
| dev_priv->next_seqno = 1; |
| |
| return seqno; |
| } |
| |
| static int |
| render_ring_flush(struct intel_ring_buffer *ring, |
| u32 invalidate_domains, |
| u32 flush_domains) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| u32 cmd; |
| int ret; |
| |
| #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->next_seqno, |
| invalidate_domains, flush_domains); |
| |
| 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 (INTEL_INFO(dev)->gen < 4) { |
| /* |
| * 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 (invalidate_domains & I915_GEM_DOMAIN_COMMAND && |
| (IS_G4X(dev) || IS_GEN5(dev))) |
| cmd |= MI_INVALIDATE_ISP; |
| |
| #if WATCH_EXEC |
| DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd); |
| #endif |
| ret = intel_ring_begin(ring, 2); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, cmd); |
| intel_ring_emit(ring, MI_NOOP); |
| intel_ring_advance(ring); |
| } |
| |
| return 0; |
| } |
| |
| static void ring_write_tail(struct intel_ring_buffer *ring, |
| u32 value) |
| { |
| drm_i915_private_t *dev_priv = ring->dev->dev_private; |
| I915_WRITE_TAIL(ring, value); |
| } |
| |
| u32 intel_ring_get_active_head(struct intel_ring_buffer *ring) |
| { |
| drm_i915_private_t *dev_priv = ring->dev->dev_private; |
| u32 acthd_reg = INTEL_INFO(ring->dev)->gen >= 4 ? |
| RING_ACTHD(ring->mmio_base) : ACTHD; |
| |
| return I915_READ(acthd_reg); |
| } |
| |
| static int init_ring_common(struct intel_ring_buffer *ring) |
| { |
| drm_i915_private_t *dev_priv = ring->dev->dev_private; |
| struct drm_i915_gem_object *obj = ring->obj; |
| u32 head; |
| |
| /* Stop the ring if it's running. */ |
| I915_WRITE_CTL(ring, 0); |
| I915_WRITE_HEAD(ring, 0); |
| ring->write_tail(ring, 0); |
| |
| /* Initialize the ring. */ |
| I915_WRITE_START(ring, obj->gtt_offset); |
| head = I915_READ_HEAD(ring) & HEAD_ADDR; |
| |
| /* G45 ring initialization fails to reset head to zero */ |
| if (head != 0) { |
| DRM_DEBUG_KMS("%s head not reset to zero " |
| "ctl %08x head %08x tail %08x start %08x\n", |
| ring->name, |
| I915_READ_CTL(ring), |
| I915_READ_HEAD(ring), |
| I915_READ_TAIL(ring), |
| I915_READ_START(ring)); |
| |
| I915_WRITE_HEAD(ring, 0); |
| |
| if (I915_READ_HEAD(ring) & HEAD_ADDR) { |
| DRM_ERROR("failed to set %s head to zero " |
| "ctl %08x head %08x tail %08x start %08x\n", |
| ring->name, |
| I915_READ_CTL(ring), |
| I915_READ_HEAD(ring), |
| I915_READ_TAIL(ring), |
| I915_READ_START(ring)); |
| } |
| } |
| |
| I915_WRITE_CTL(ring, |
| ((ring->size - PAGE_SIZE) & RING_NR_PAGES) |
| | RING_REPORT_64K | RING_VALID); |
| |
| /* If the head is still not zero, the ring is dead */ |
| if ((I915_READ_CTL(ring) & RING_VALID) == 0 || |
| I915_READ_START(ring) != obj->gtt_offset || |
| (I915_READ_HEAD(ring) & HEAD_ADDR) != 0) { |
| DRM_ERROR("%s initialization failed " |
| "ctl %08x head %08x tail %08x start %08x\n", |
| ring->name, |
| I915_READ_CTL(ring), |
| I915_READ_HEAD(ring), |
| I915_READ_TAIL(ring), |
| I915_READ_START(ring)); |
| return -EIO; |
| } |
| |
| if (!drm_core_check_feature(ring->dev, DRIVER_MODESET)) |
| i915_kernel_lost_context(ring->dev); |
| else { |
| ring->head = I915_READ_HEAD(ring); |
| ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR; |
| ring->space = ring_space(ring); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * 965+ support PIPE_CONTROL commands, which provide finer grained control |
| * over cache flushing. |
| */ |
| struct pipe_control { |
| struct drm_i915_gem_object *obj; |
| volatile u32 *cpu_page; |
| u32 gtt_offset; |
| }; |
| |
| static int |
| init_pipe_control(struct intel_ring_buffer *ring) |
| { |
| struct pipe_control *pc; |
| struct drm_i915_gem_object *obj; |
| int ret; |
| |
| if (ring->private) |
| return 0; |
| |
| pc = kmalloc(sizeof(*pc), GFP_KERNEL); |
| if (!pc) |
| return -ENOMEM; |
| |
| obj = i915_gem_alloc_object(ring->dev, 4096); |
| if (obj == NULL) { |
| DRM_ERROR("Failed to allocate seqno page\n"); |
| ret = -ENOMEM; |
| goto err; |
| } |
| obj->agp_type = AGP_USER_CACHED_MEMORY; |
| |
| ret = i915_gem_object_pin(obj, 4096, true); |
| if (ret) |
| goto err_unref; |
| |
| pc->gtt_offset = obj->gtt_offset; |
| pc->cpu_page = kmap(obj->pages[0]); |
| if (pc->cpu_page == NULL) |
| goto err_unpin; |
| |
| pc->obj = obj; |
| ring->private = pc; |
| return 0; |
| |
| err_unpin: |
| i915_gem_object_unpin(obj); |
| err_unref: |
| drm_gem_object_unreference(&obj->base); |
| err: |
| kfree(pc); |
| return ret; |
| } |
| |
| static void |
| cleanup_pipe_control(struct intel_ring_buffer *ring) |
| { |
| struct pipe_control *pc = ring->private; |
| struct drm_i915_gem_object *obj; |
| |
| if (!ring->private) |
| return; |
| |
| obj = pc->obj; |
| kunmap(obj->pages[0]); |
| i915_gem_object_unpin(obj); |
| drm_gem_object_unreference(&obj->base); |
| |
| kfree(pc); |
| ring->private = NULL; |
| } |
| |
| static int init_render_ring(struct intel_ring_buffer *ring) |
| { |
| struct drm_device *dev = ring->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int ret = init_ring_common(ring); |
| |
| if (INTEL_INFO(dev)->gen > 3) { |
| int mode = VS_TIMER_DISPATCH << 16 | VS_TIMER_DISPATCH; |
| if (IS_GEN6(dev)) |
| mode |= MI_FLUSH_ENABLE << 16 | MI_FLUSH_ENABLE; |
| I915_WRITE(MI_MODE, mode); |
| } |
| |
| if (INTEL_INFO(dev)->gen >= 6) { |
| } else if (IS_GEN5(dev)) { |
| ret = init_pipe_control(ring); |
| if (ret) |
| return ret; |
| } |
| |
| return ret; |
| } |
| |
| static void render_ring_cleanup(struct intel_ring_buffer *ring) |
| { |
| if (!ring->private) |
| return; |
| |
| cleanup_pipe_control(ring); |
| } |
| |
| static void |
| update_semaphore(struct intel_ring_buffer *ring, int i, u32 seqno) |
| { |
| struct drm_device *dev = ring->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int id; |
| |
| /* |
| * cs -> 1 = vcs, 0 = bcs |
| * vcs -> 1 = bcs, 0 = cs, |
| * bcs -> 1 = cs, 0 = vcs. |
| */ |
| id = ring - dev_priv->ring; |
| id += 2 - i; |
| id %= 3; |
| |
| intel_ring_emit(ring, |
| MI_SEMAPHORE_MBOX | |
| MI_SEMAPHORE_REGISTER | |
| MI_SEMAPHORE_UPDATE); |
| intel_ring_emit(ring, seqno); |
| intel_ring_emit(ring, |
| RING_SYNC_0(dev_priv->ring[id].mmio_base) + 4*i); |
| } |
| |
| static int |
| gen6_add_request(struct intel_ring_buffer *ring, |
| u32 *result) |
| { |
| u32 seqno; |
| int ret; |
| |
| ret = intel_ring_begin(ring, 10); |
| if (ret) |
| return ret; |
| |
| seqno = i915_gem_get_seqno(ring->dev); |
| update_semaphore(ring, 0, seqno); |
| update_semaphore(ring, 1, seqno); |
| |
| intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
| intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
| intel_ring_emit(ring, seqno); |
| intel_ring_emit(ring, MI_USER_INTERRUPT); |
| intel_ring_advance(ring); |
| |
| *result = seqno; |
| return 0; |
| } |
| |
| int |
| intel_ring_sync(struct intel_ring_buffer *ring, |
| struct intel_ring_buffer *to, |
| u32 seqno) |
| { |
| int ret; |
| |
| ret = intel_ring_begin(ring, 4); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, |
| MI_SEMAPHORE_MBOX | |
| MI_SEMAPHORE_REGISTER | |
| intel_ring_sync_index(ring, to) << 17 | |
| MI_SEMAPHORE_COMPARE); |
| intel_ring_emit(ring, seqno); |
| intel_ring_emit(ring, 0); |
| intel_ring_emit(ring, MI_NOOP); |
| intel_ring_advance(ring); |
| |
| return 0; |
| } |
| |
| #define PIPE_CONTROL_FLUSH(ring__, addr__) \ |
| do { \ |
| intel_ring_emit(ring__, GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | \ |
| PIPE_CONTROL_DEPTH_STALL | 2); \ |
| intel_ring_emit(ring__, (addr__) | PIPE_CONTROL_GLOBAL_GTT); \ |
| intel_ring_emit(ring__, 0); \ |
| intel_ring_emit(ring__, 0); \ |
| } while (0) |
| |
| static int |
| pc_render_add_request(struct intel_ring_buffer *ring, |
| u32 *result) |
| { |
| struct drm_device *dev = ring->dev; |
| u32 seqno = i915_gem_get_seqno(dev); |
| struct pipe_control *pc = ring->private; |
| u32 scratch_addr = pc->gtt_offset + 128; |
| int ret; |
| |
| /* For Ironlake, MI_USER_INTERRUPT was deprecated and apparently |
| * incoherent with writes to memory, i.e. completely fubar, |
| * so we need to use PIPE_NOTIFY instead. |
| * |
| * However, we also need to workaround the qword write |
| * incoherence by flushing the 6 PIPE_NOTIFY buffers out to |
| * memory before requesting an interrupt. |
| */ |
| ret = intel_ring_begin(ring, 32); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | |
| PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH); |
| intel_ring_emit(ring, pc->gtt_offset | PIPE_CONTROL_GLOBAL_GTT); |
| intel_ring_emit(ring, seqno); |
| intel_ring_emit(ring, 0); |
| PIPE_CONTROL_FLUSH(ring, scratch_addr); |
| scratch_addr += 128; /* write to separate cachelines */ |
| PIPE_CONTROL_FLUSH(ring, scratch_addr); |
| scratch_addr += 128; |
| PIPE_CONTROL_FLUSH(ring, scratch_addr); |
| scratch_addr += 128; |
| PIPE_CONTROL_FLUSH(ring, scratch_addr); |
| scratch_addr += 128; |
| PIPE_CONTROL_FLUSH(ring, scratch_addr); |
| scratch_addr += 128; |
| PIPE_CONTROL_FLUSH(ring, scratch_addr); |
| intel_ring_emit(ring, GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | |
| PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH | |
| PIPE_CONTROL_NOTIFY); |
| intel_ring_emit(ring, pc->gtt_offset | PIPE_CONTROL_GLOBAL_GTT); |
| intel_ring_emit(ring, seqno); |
| intel_ring_emit(ring, 0); |
| intel_ring_advance(ring); |
| |
| *result = seqno; |
| return 0; |
| } |
| |
| static int |
| render_ring_add_request(struct intel_ring_buffer *ring, |
| u32 *result) |
| { |
| struct drm_device *dev = ring->dev; |
| u32 seqno = i915_gem_get_seqno(dev); |
| int ret; |
| |
| ret = intel_ring_begin(ring, 4); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
| intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
| intel_ring_emit(ring, seqno); |
| intel_ring_emit(ring, MI_USER_INTERRUPT); |
| intel_ring_advance(ring); |
| |
| *result = seqno; |
| return 0; |
| } |
| |
| static u32 |
| ring_get_seqno(struct intel_ring_buffer *ring) |
| { |
| return intel_read_status_page(ring, I915_GEM_HWS_INDEX); |
| } |
| |
| static u32 |
| pc_render_get_seqno(struct intel_ring_buffer *ring) |
| { |
| struct pipe_control *pc = ring->private; |
| return pc->cpu_page[0]; |
| } |
| |
| static void |
| ironlake_enable_irq(drm_i915_private_t *dev_priv, u32 mask) |
| { |
| dev_priv->gt_irq_mask &= ~mask; |
| I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
| POSTING_READ(GTIMR); |
| } |
| |
| static void |
| ironlake_disable_irq(drm_i915_private_t *dev_priv, u32 mask) |
| { |
| dev_priv->gt_irq_mask |= mask; |
| I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
| POSTING_READ(GTIMR); |
| } |
| |
| static void |
| i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask) |
| { |
| dev_priv->irq_mask &= ~mask; |
| I915_WRITE(IMR, dev_priv->irq_mask); |
| POSTING_READ(IMR); |
| } |
| |
| static void |
| i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask) |
| { |
| dev_priv->irq_mask |= mask; |
| I915_WRITE(IMR, dev_priv->irq_mask); |
| POSTING_READ(IMR); |
| } |
| |
| static bool |
| render_ring_get_irq(struct intel_ring_buffer *ring) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| |
| if (!dev->irq_enabled) |
| return false; |
| |
| spin_lock(&ring->irq_lock); |
| if (ring->irq_refcount++ == 0) { |
| if (HAS_PCH_SPLIT(dev)) |
| ironlake_enable_irq(dev_priv, |
| GT_PIPE_NOTIFY | GT_USER_INTERRUPT); |
| else |
| i915_enable_irq(dev_priv, I915_USER_INTERRUPT); |
| } |
| spin_unlock(&ring->irq_lock); |
| |
| return true; |
| } |
| |
| static void |
| render_ring_put_irq(struct intel_ring_buffer *ring) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| |
| spin_lock(&ring->irq_lock); |
| if (--ring->irq_refcount == 0) { |
| if (HAS_PCH_SPLIT(dev)) |
| ironlake_disable_irq(dev_priv, |
| GT_USER_INTERRUPT | |
| GT_PIPE_NOTIFY); |
| else |
| i915_disable_irq(dev_priv, I915_USER_INTERRUPT); |
| } |
| spin_unlock(&ring->irq_lock); |
| } |
| |
| void intel_ring_setup_status_page(struct intel_ring_buffer *ring) |
| { |
| drm_i915_private_t *dev_priv = ring->dev->dev_private; |
| u32 mmio = IS_GEN6(ring->dev) ? |
| RING_HWS_PGA_GEN6(ring->mmio_base) : |
| RING_HWS_PGA(ring->mmio_base); |
| I915_WRITE(mmio, (u32)ring->status_page.gfx_addr); |
| POSTING_READ(mmio); |
| } |
| |
| static int |
| bsd_ring_flush(struct intel_ring_buffer *ring, |
| u32 invalidate_domains, |
| u32 flush_domains) |
| { |
| int ret; |
| |
| if ((flush_domains & I915_GEM_DOMAIN_RENDER) == 0) |
| return 0; |
| |
| ret = intel_ring_begin(ring, 2); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, MI_FLUSH); |
| intel_ring_emit(ring, MI_NOOP); |
| intel_ring_advance(ring); |
| return 0; |
| } |
| |
| static int |
| ring_add_request(struct intel_ring_buffer *ring, |
| u32 *result) |
| { |
| u32 seqno; |
| int ret; |
| |
| ret = intel_ring_begin(ring, 4); |
| if (ret) |
| return ret; |
| |
| seqno = i915_gem_get_seqno(ring->dev); |
| |
| intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
| intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
| intel_ring_emit(ring, seqno); |
| intel_ring_emit(ring, MI_USER_INTERRUPT); |
| intel_ring_advance(ring); |
| |
| *result = seqno; |
| return 0; |
| } |
| |
| static bool |
| ring_get_irq(struct intel_ring_buffer *ring, u32 flag) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| |
| if (!dev->irq_enabled) |
| return false; |
| |
| spin_lock(&ring->irq_lock); |
| if (ring->irq_refcount++ == 0) |
| ironlake_enable_irq(dev_priv, flag); |
| spin_unlock(&ring->irq_lock); |
| |
| return true; |
| } |
| |
| static void |
| ring_put_irq(struct intel_ring_buffer *ring, u32 flag) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| |
| spin_lock(&ring->irq_lock); |
| if (--ring->irq_refcount == 0) |
| ironlake_disable_irq(dev_priv, flag); |
| spin_unlock(&ring->irq_lock); |
| } |
| |
| static bool |
| gen6_ring_get_irq(struct intel_ring_buffer *ring, u32 gflag, u32 rflag) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| |
| if (!dev->irq_enabled) |
| return false; |
| |
| spin_lock(&ring->irq_lock); |
| if (ring->irq_refcount++ == 0) { |
| ring->irq_mask &= ~rflag; |
| I915_WRITE_IMR(ring, ring->irq_mask); |
| ironlake_enable_irq(dev_priv, gflag); |
| } |
| spin_unlock(&ring->irq_lock); |
| |
| return true; |
| } |
| |
| static void |
| gen6_ring_put_irq(struct intel_ring_buffer *ring, u32 gflag, u32 rflag) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| |
| spin_lock(&ring->irq_lock); |
| if (--ring->irq_refcount == 0) { |
| ring->irq_mask |= rflag; |
| I915_WRITE_IMR(ring, ring->irq_mask); |
| ironlake_disable_irq(dev_priv, gflag); |
| } |
| spin_unlock(&ring->irq_lock); |
| } |
| |
| static bool |
| bsd_ring_get_irq(struct intel_ring_buffer *ring) |
| { |
| return ring_get_irq(ring, GT_BSD_USER_INTERRUPT); |
| } |
| static void |
| bsd_ring_put_irq(struct intel_ring_buffer *ring) |
| { |
| ring_put_irq(ring, GT_BSD_USER_INTERRUPT); |
| } |
| |
| static int |
| ring_dispatch_execbuffer(struct intel_ring_buffer *ring, u32 offset, u32 length) |
| { |
| int ret; |
| |
| ret = intel_ring_begin(ring, 2); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, |
| MI_BATCH_BUFFER_START | (2 << 6) | |
| MI_BATCH_NON_SECURE_I965); |
| intel_ring_emit(ring, offset); |
| intel_ring_advance(ring); |
| |
| return 0; |
| } |
| |
| static int |
| render_ring_dispatch_execbuffer(struct intel_ring_buffer *ring, |
| u32 offset, u32 len) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| int ret; |
| |
| trace_i915_gem_request_submit(dev, dev_priv->next_seqno + 1); |
| |
| if (IS_I830(dev) || IS_845G(dev)) { |
| ret = intel_ring_begin(ring, 4); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, MI_BATCH_BUFFER); |
| intel_ring_emit(ring, offset | MI_BATCH_NON_SECURE); |
| intel_ring_emit(ring, offset + len - 8); |
| intel_ring_emit(ring, 0); |
| } else { |
| ret = intel_ring_begin(ring, 2); |
| if (ret) |
| return ret; |
| |
| if (INTEL_INFO(dev)->gen >= 4) { |
| intel_ring_emit(ring, |
| MI_BATCH_BUFFER_START | (2 << 6) | |
| MI_BATCH_NON_SECURE_I965); |
| intel_ring_emit(ring, offset); |
| } else { |
| intel_ring_emit(ring, |
| MI_BATCH_BUFFER_START | (2 << 6)); |
| intel_ring_emit(ring, offset | MI_BATCH_NON_SECURE); |
| } |
| } |
| intel_ring_advance(ring); |
| |
| return 0; |
| } |
| |
| static void cleanup_status_page(struct intel_ring_buffer *ring) |
| { |
| drm_i915_private_t *dev_priv = ring->dev->dev_private; |
| struct drm_i915_gem_object *obj; |
| |
| obj = ring->status_page.obj; |
| if (obj == NULL) |
| return; |
| |
| kunmap(obj->pages[0]); |
| i915_gem_object_unpin(obj); |
| drm_gem_object_unreference(&obj->base); |
| ring->status_page.obj = NULL; |
| |
| memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
| } |
| |
| static int init_status_page(struct intel_ring_buffer *ring) |
| { |
| struct drm_device *dev = ring->dev; |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| struct drm_i915_gem_object *obj; |
| int ret; |
| |
| obj = i915_gem_alloc_object(dev, 4096); |
| if (obj == NULL) { |
| DRM_ERROR("Failed to allocate status page\n"); |
| ret = -ENOMEM; |
| goto err; |
| } |
| obj->agp_type = AGP_USER_CACHED_MEMORY; |
| |
| ret = i915_gem_object_pin(obj, 4096, true); |
| if (ret != 0) { |
| goto err_unref; |
| } |
| |
| ring->status_page.gfx_addr = obj->gtt_offset; |
| ring->status_page.page_addr = kmap(obj->pages[0]); |
| if (ring->status_page.page_addr == NULL) { |
| memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
| goto err_unpin; |
| } |
| ring->status_page.obj = obj; |
| memset(ring->status_page.page_addr, 0, PAGE_SIZE); |
| |
| intel_ring_setup_status_page(ring); |
| DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n", |
| ring->name, ring->status_page.gfx_addr); |
| |
| return 0; |
| |
| err_unpin: |
| i915_gem_object_unpin(obj); |
| err_unref: |
| drm_gem_object_unreference(&obj->base); |
| err: |
| return ret; |
| } |
| |
| int intel_init_ring_buffer(struct drm_device *dev, |
| struct intel_ring_buffer *ring) |
| { |
| struct drm_i915_gem_object *obj; |
| int ret; |
| |
| ring->dev = dev; |
| INIT_LIST_HEAD(&ring->active_list); |
| INIT_LIST_HEAD(&ring->request_list); |
| INIT_LIST_HEAD(&ring->gpu_write_list); |
| |
| spin_lock_init(&ring->irq_lock); |
| ring->irq_mask = ~0; |
| |
| if (I915_NEED_GFX_HWS(dev)) { |
| ret = init_status_page(ring); |
| if (ret) |
| return ret; |
| } |
| |
| obj = i915_gem_alloc_object(dev, ring->size); |
| if (obj == NULL) { |
| DRM_ERROR("Failed to allocate ringbuffer\n"); |
| ret = -ENOMEM; |
| goto err_hws; |
| } |
| |
| ring->obj = obj; |
| |
| ret = i915_gem_object_pin(obj, PAGE_SIZE, true); |
| if (ret) |
| goto err_unref; |
| |
| ring->map.size = ring->size; |
| ring->map.offset = dev->agp->base + obj->gtt_offset; |
| 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"); |
| ret = -EINVAL; |
| goto err_unpin; |
| } |
| |
| ring->virtual_start = ring->map.handle; |
| ret = ring->init(ring); |
| if (ret) |
| goto err_unmap; |
| |
| /* Workaround an erratum on the i830 which causes a hang if |
| * the TAIL pointer points to within the last 2 cachelines |
| * of the buffer. |
| */ |
| ring->effective_size = ring->size; |
| if (IS_I830(ring->dev)) |
| ring->effective_size -= 128; |
| |
| return 0; |
| |
| err_unmap: |
| drm_core_ioremapfree(&ring->map, dev); |
| err_unpin: |
| i915_gem_object_unpin(obj); |
| err_unref: |
| drm_gem_object_unreference(&obj->base); |
| ring->obj = NULL; |
| err_hws: |
| cleanup_status_page(ring); |
| return ret; |
| } |
| |
| void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring) |
| { |
| struct drm_i915_private *dev_priv; |
| int ret; |
| |
| if (ring->obj == NULL) |
| return; |
| |
| /* Disable the ring buffer. The ring must be idle at this point */ |
| dev_priv = ring->dev->dev_private; |
| ret = intel_wait_ring_buffer(ring, ring->size - 8); |
| if (ret) |
| DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n", |
| ring->name, ret); |
| |
| I915_WRITE_CTL(ring, 0); |
| |
| drm_core_ioremapfree(&ring->map, ring->dev); |
| |
| i915_gem_object_unpin(ring->obj); |
| drm_gem_object_unreference(&ring->obj->base); |
| ring->obj = NULL; |
| |
| if (ring->cleanup) |
| ring->cleanup(ring); |
| |
| cleanup_status_page(ring); |
| } |
| |
| static int intel_wrap_ring_buffer(struct intel_ring_buffer *ring) |
| { |
| unsigned int *virt; |
| int rem = ring->size - ring->tail; |
| |
| if (ring->space < rem) { |
| int ret = intel_wait_ring_buffer(ring, rem); |
| if (ret) |
| return ret; |
| } |
| |
| virt = (unsigned int *)(ring->virtual_start + ring->tail); |
| rem /= 8; |
| while (rem--) { |
| *virt++ = MI_NOOP; |
| *virt++ = MI_NOOP; |
| } |
| |
| ring->tail = 0; |
| ring->space = ring_space(ring); |
| |
| return 0; |
| } |
| |
| int intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n) |
| { |
| struct drm_device *dev = ring->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| unsigned long end; |
| u32 head; |
| |
| /* If the reported head position has wrapped or hasn't advanced, |
| * fallback to the slow and accurate path. |
| */ |
| head = intel_read_status_page(ring, 4); |
| if (head > ring->head) { |
| ring->head = head; |
| ring->space = ring_space(ring); |
| if (ring->space >= n) |
| return 0; |
| } |
| |
| trace_i915_ring_wait_begin (dev); |
| end = jiffies + 3 * HZ; |
| do { |
| ring->head = I915_READ_HEAD(ring); |
| ring->space = ring_space(ring); |
| 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; |
| } |
| |
| msleep(1); |
| if (atomic_read(&dev_priv->mm.wedged)) |
| return -EAGAIN; |
| } while (!time_after(jiffies, end)); |
| trace_i915_ring_wait_end (dev); |
| return -EBUSY; |
| } |
| |
| int intel_ring_begin(struct intel_ring_buffer *ring, |
| int num_dwords) |
| { |
| int n = 4*num_dwords; |
| int ret; |
| |
| if (unlikely(ring->tail + n > ring->effective_size)) { |
| ret = intel_wrap_ring_buffer(ring); |
| if (unlikely(ret)) |
| return ret; |
| } |
| |
| if (unlikely(ring->space < n)) { |
| ret = intel_wait_ring_buffer(ring, n); |
| if (unlikely(ret)) |
| return ret; |
| } |
| |
| ring->space -= n; |
| return 0; |
| } |
| |
| void intel_ring_advance(struct intel_ring_buffer *ring) |
| { |
| ring->tail &= ring->size - 1; |
| ring->write_tail(ring, ring->tail); |
| } |
| |
| static const struct intel_ring_buffer render_ring = { |
| .name = "render ring", |
| .id = RING_RENDER, |
| .mmio_base = RENDER_RING_BASE, |
| .size = 32 * PAGE_SIZE, |
| .init = init_render_ring, |
| .write_tail = ring_write_tail, |
| .flush = render_ring_flush, |
| .add_request = render_ring_add_request, |
| .get_seqno = ring_get_seqno, |
| .irq_get = render_ring_get_irq, |
| .irq_put = render_ring_put_irq, |
| .dispatch_execbuffer = render_ring_dispatch_execbuffer, |
| .cleanup = render_ring_cleanup, |
| }; |
| |
| /* ring buffer for bit-stream decoder */ |
| |
| static const struct intel_ring_buffer bsd_ring = { |
| .name = "bsd ring", |
| .id = RING_BSD, |
| .mmio_base = BSD_RING_BASE, |
| .size = 32 * PAGE_SIZE, |
| .init = init_ring_common, |
| .write_tail = ring_write_tail, |
| .flush = bsd_ring_flush, |
| .add_request = ring_add_request, |
| .get_seqno = ring_get_seqno, |
| .irq_get = bsd_ring_get_irq, |
| .irq_put = bsd_ring_put_irq, |
| .dispatch_execbuffer = ring_dispatch_execbuffer, |
| }; |
| |
| |
| static void gen6_bsd_ring_write_tail(struct intel_ring_buffer *ring, |
| u32 value) |
| { |
| drm_i915_private_t *dev_priv = ring->dev->dev_private; |
| |
| /* Every tail move must follow the sequence below */ |
| I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, |
| GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK | |
| GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_DISABLE); |
| I915_WRITE(GEN6_BSD_RNCID, 0x0); |
| |
| if (wait_for((I915_READ(GEN6_BSD_SLEEP_PSMI_CONTROL) & |
| GEN6_BSD_SLEEP_PSMI_CONTROL_IDLE_INDICATOR) == 0, |
| 50)) |
| DRM_ERROR("timed out waiting for IDLE Indicator\n"); |
| |
| I915_WRITE_TAIL(ring, value); |
| I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, |
| GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK | |
| GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_ENABLE); |
| } |
| |
| static int gen6_ring_flush(struct intel_ring_buffer *ring, |
| u32 invalidate_domains, |
| u32 flush_domains) |
| { |
| int ret; |
| |
| if ((flush_domains & I915_GEM_DOMAIN_RENDER) == 0) |
| return 0; |
| |
| ret = intel_ring_begin(ring, 4); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, MI_FLUSH_DW); |
| intel_ring_emit(ring, 0); |
| intel_ring_emit(ring, 0); |
| intel_ring_emit(ring, 0); |
| intel_ring_advance(ring); |
| return 0; |
| } |
| |
| static int |
| gen6_ring_dispatch_execbuffer(struct intel_ring_buffer *ring, |
| u32 offset, u32 len) |
| { |
| int ret; |
| |
| ret = intel_ring_begin(ring, 2); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, MI_BATCH_BUFFER_START | MI_BATCH_NON_SECURE_I965); |
| /* bit0-7 is the length on GEN6+ */ |
| intel_ring_emit(ring, offset); |
| intel_ring_advance(ring); |
| |
| return 0; |
| } |
| |
| static bool |
| gen6_render_ring_get_irq(struct intel_ring_buffer *ring) |
| { |
| return gen6_ring_get_irq(ring, |
| GT_USER_INTERRUPT, |
| GEN6_RENDER_USER_INTERRUPT); |
| } |
| |
| static void |
| gen6_render_ring_put_irq(struct intel_ring_buffer *ring) |
| { |
| return gen6_ring_put_irq(ring, |
| GT_USER_INTERRUPT, |
| GEN6_RENDER_USER_INTERRUPT); |
| } |
| |
| static bool |
| gen6_bsd_ring_get_irq(struct intel_ring_buffer *ring) |
| { |
| return gen6_ring_get_irq(ring, |
| GT_GEN6_BSD_USER_INTERRUPT, |
| GEN6_BSD_USER_INTERRUPT); |
| } |
| |
| static void |
| gen6_bsd_ring_put_irq(struct intel_ring_buffer *ring) |
| { |
| return gen6_ring_put_irq(ring, |
| GT_GEN6_BSD_USER_INTERRUPT, |
| GEN6_BSD_USER_INTERRUPT); |
| } |
| |
| /* ring buffer for Video Codec for Gen6+ */ |
| static const struct intel_ring_buffer gen6_bsd_ring = { |
| .name = "gen6 bsd ring", |
| .id = RING_BSD, |
| .mmio_base = GEN6_BSD_RING_BASE, |
| .size = 32 * PAGE_SIZE, |
| .init = init_ring_common, |
| .write_tail = gen6_bsd_ring_write_tail, |
| .flush = gen6_ring_flush, |
| .add_request = gen6_add_request, |
| .get_seqno = ring_get_seqno, |
| .irq_get = gen6_bsd_ring_get_irq, |
| .irq_put = gen6_bsd_ring_put_irq, |
| .dispatch_execbuffer = gen6_ring_dispatch_execbuffer, |
| }; |
| |
| /* Blitter support (SandyBridge+) */ |
| |
| static bool |
| blt_ring_get_irq(struct intel_ring_buffer *ring) |
| { |
| return gen6_ring_get_irq(ring, |
| GT_BLT_USER_INTERRUPT, |
| GEN6_BLITTER_USER_INTERRUPT); |
| } |
| |
| static void |
| blt_ring_put_irq(struct intel_ring_buffer *ring) |
| { |
| gen6_ring_put_irq(ring, |
| GT_BLT_USER_INTERRUPT, |
| GEN6_BLITTER_USER_INTERRUPT); |
| } |
| |
| |
| /* Workaround for some stepping of SNB, |
| * each time when BLT engine ring tail moved, |
| * the first command in the ring to be parsed |
| * should be MI_BATCH_BUFFER_START |
| */ |
| #define NEED_BLT_WORKAROUND(dev) \ |
| (IS_GEN6(dev) && (dev->pdev->revision < 8)) |
| |
| static inline struct drm_i915_gem_object * |
| to_blt_workaround(struct intel_ring_buffer *ring) |
| { |
| return ring->private; |
| } |
| |
| static int blt_ring_init(struct intel_ring_buffer *ring) |
| { |
| if (NEED_BLT_WORKAROUND(ring->dev)) { |
| struct drm_i915_gem_object *obj; |
| u32 *ptr; |
| int ret; |
| |
| obj = i915_gem_alloc_object(ring->dev, 4096); |
| if (obj == NULL) |
| return -ENOMEM; |
| |
| ret = i915_gem_object_pin(obj, 4096, true); |
| if (ret) { |
| drm_gem_object_unreference(&obj->base); |
| return ret; |
| } |
| |
| ptr = kmap(obj->pages[0]); |
| *ptr++ = MI_BATCH_BUFFER_END; |
| *ptr++ = MI_NOOP; |
| kunmap(obj->pages[0]); |
| |
| ret = i915_gem_object_set_to_gtt_domain(obj, false); |
| if (ret) { |
| i915_gem_object_unpin(obj); |
| drm_gem_object_unreference(&obj->base); |
| return ret; |
| } |
| |
| ring->private = obj; |
| } |
| |
| return init_ring_common(ring); |
| } |
| |
| static int blt_ring_begin(struct intel_ring_buffer *ring, |
| int num_dwords) |
| { |
| if (ring->private) { |
| int ret = intel_ring_begin(ring, num_dwords+2); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, MI_BATCH_BUFFER_START); |
| intel_ring_emit(ring, to_blt_workaround(ring)->gtt_offset); |
| |
| return 0; |
| } else |
| return intel_ring_begin(ring, 4); |
| } |
| |
| static int blt_ring_flush(struct intel_ring_buffer *ring, |
| u32 invalidate_domains, |
| u32 flush_domains) |
| { |
| int ret; |
| |
| if ((flush_domains & I915_GEM_DOMAIN_RENDER) == 0) |
| return 0; |
| |
| ret = blt_ring_begin(ring, 4); |
| if (ret) |
| return ret; |
| |
| intel_ring_emit(ring, MI_FLUSH_DW); |
| intel_ring_emit(ring, 0); |
| intel_ring_emit(ring, 0); |
| intel_ring_emit(ring, 0); |
| intel_ring_advance(ring); |
| return 0; |
| } |
| |
| static void blt_ring_cleanup(struct intel_ring_buffer *ring) |
| { |
| if (!ring->private) |
| return; |
| |
| i915_gem_object_unpin(ring->private); |
| drm_gem_object_unreference(ring->private); |
| ring->private = NULL; |
| } |
| |
| static const struct intel_ring_buffer gen6_blt_ring = { |
| .name = "blt ring", |
| .id = RING_BLT, |
| .mmio_base = BLT_RING_BASE, |
| .size = 32 * PAGE_SIZE, |
| .init = blt_ring_init, |
| .write_tail = ring_write_tail, |
| .flush = blt_ring_flush, |
| .add_request = gen6_add_request, |
| .get_seqno = ring_get_seqno, |
| .irq_get = blt_ring_get_irq, |
| .irq_put = blt_ring_put_irq, |
| .dispatch_execbuffer = gen6_ring_dispatch_execbuffer, |
| .cleanup = blt_ring_cleanup, |
| }; |
| |
| int intel_init_render_ring_buffer(struct drm_device *dev) |
| { |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; |
| |
| *ring = render_ring; |
| if (INTEL_INFO(dev)->gen >= 6) { |
| ring->add_request = gen6_add_request; |
| ring->irq_get = gen6_render_ring_get_irq; |
| ring->irq_put = gen6_render_ring_put_irq; |
| } else if (IS_GEN5(dev)) { |
| ring->add_request = pc_render_add_request; |
| ring->get_seqno = pc_render_get_seqno; |
| } |
| |
| if (!I915_NEED_GFX_HWS(dev)) { |
| ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; |
| memset(ring->status_page.page_addr, 0, PAGE_SIZE); |
| } |
| |
| return intel_init_ring_buffer(dev, ring); |
| } |
| |
| int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size) |
| { |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; |
| |
| *ring = render_ring; |
| if (INTEL_INFO(dev)->gen >= 6) { |
| ring->add_request = gen6_add_request; |
| ring->irq_get = gen6_render_ring_get_irq; |
| ring->irq_put = gen6_render_ring_put_irq; |
| } else if (IS_GEN5(dev)) { |
| ring->add_request = pc_render_add_request; |
| ring->get_seqno = pc_render_get_seqno; |
| } |
| |
| ring->dev = dev; |
| INIT_LIST_HEAD(&ring->active_list); |
| INIT_LIST_HEAD(&ring->request_list); |
| INIT_LIST_HEAD(&ring->gpu_write_list); |
| |
| ring->size = size; |
| ring->effective_size = ring->size; |
| if (IS_I830(ring->dev)) |
| ring->effective_size -= 128; |
| |
| ring->map.offset = start; |
| ring->map.size = 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("can not ioremap virtual address for" |
| " ring buffer\n"); |
| return -ENOMEM; |
| } |
| |
| ring->virtual_start = (void __force __iomem *)ring->map.handle; |
| return 0; |
| } |
| |
| int intel_init_bsd_ring_buffer(struct drm_device *dev) |
| { |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| struct intel_ring_buffer *ring = &dev_priv->ring[VCS]; |
| |
| if (IS_GEN6(dev)) |
| *ring = gen6_bsd_ring; |
| else |
| *ring = bsd_ring; |
| |
| return intel_init_ring_buffer(dev, ring); |
| } |
| |
| int intel_init_blt_ring_buffer(struct drm_device *dev) |
| { |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| struct intel_ring_buffer *ring = &dev_priv->ring[BCS]; |
| |
| *ring = gen6_blt_ring; |
| |
| return intel_init_ring_buffer(dev, ring); |
| } |