add BSD ring buffer support on GM45+ systems.
BSD (bit-stream-decoder) engine is a GPU engine for H.264/VC1
VLD decoding.
Signed-off-by: Xiang Haihao <haihao.xi...@intel.com>
Signed-off-by: Zou Nanhai <nanhai....@intel.com>
---
drivers/gpu/drm/i915/i915_dma.c | 2 +
drivers/gpu/drm/i915/i915_drv.h | 2 +
drivers/gpu/drm/i915/i915_gem.c | 76 ++++++++-------------------------------
drivers/gpu/drm/i915/i915_reg.h | 16 ++++++++
4 files changed, 35 insertions(+), 61 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 88ec88c..063f355 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -128,6 +128,8 @@ static int i915_dma_cleanup(struct drm_device * dev)
drm_irq_uninstall(dev);
intel_cleanup_ring_buffer(dev, &dev_priv->render_ring);
+ if (HAS_BSD(dev))
+ intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring);
/* Clear the HWS virtual address at teardown */
if (I915_NEED_GFX_HWS(dev))
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 83d6e9b..ee0a15e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -238,6 +238,7 @@ typedef struct drm_i915_private {
struct pci_dev *bridge_dev;
struct intel_ring_buffer render_ring;
+ struct intel_ring_buffer bsd_ring;
drm_dma_handle_t *status_page_dmah;
@@ -1120,6 +1121,7 @@ extern int i915_wait_ring(struct drm_device * dev, int n,
const char *caller);
(dev)->pci_device == 0x2A42 || \
(dev)->pci_device == 0x2E42)
+#define HAS_BSD(dev) (IS_IRONLAKE(dev) || IS_G4X(dev))
#define I915_NEED_GFX_HWS(dev) (INTEL_INFO(dev)->need_gfx_hws)
/* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 7b8fa88..450c67e 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1887,70 +1887,17 @@ i915_gem_flush(struct drm_device *dev,
uint32_t flush_domains)
{
drm_i915_private_t *dev_priv = dev->dev_private;
- uint32_t cmd;
-
-#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;
+ dev_priv->render_ring.flush(dev, &dev_priv->render_ring,
+ invalidate_domains,
+ flush_domains);
-#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();
- }
+ if (HAS_BSD(dev))
+ dev_priv->bsd_ring.flush(dev, &dev_priv->bsd_ring,
+ invalidate_domains,
+ flush_domains);
}
/**
@@ -4552,10 +4499,14 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
if (!I915_NEED_GFX_HWS(dev)) {
dev_priv->render_ring.status_page.page_addr
= dev_priv->status_page_dmah->vaddr;
- memset(dev_priv->render_ring.status_page.page_addr
+ memset(dev_priv->render_ring.status_page.page_addr,
0, PAGE_SIZE);
}
ret = intel_init_ring_buffer(dev, &dev_priv->render_ring);
+ if (!ret && HAS_BSD(dev)) {
+ dev_priv->bsd_ring = bsd_ring;
+ ret = intel_init_ring_buffer(dev, &dev_priv->bsd_ring);
+ }
return ret;
}
@@ -4564,6 +4515,9 @@ i915_gem_cleanup_ringbuffer(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
intel_cleanup_ring_buffer(dev, &dev_priv->render_ring);
+ if (HAS_BSD(dev))
+ intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring);
+
}
int
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 527d30a..64f6bba 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -324,6 +324,7 @@
#define I915_DEBUG_INTERRUPT (1<<2)
#define I915_USER_INTERRUPT (1<<1)
#define I915_ASLE_INTERRUPT (1<<0)
+#define I915_BSD_USER_INTERRUPT (1<<25)
#define EIR 0x020b0
#define EMR 0x020b4
#define ESR 0x020b8
@@ -358,6 +359,18 @@
#define BB_ADDR 0x02140 /* 8 bytes */
#define GFX_FLSH_CNTL 0x02170 /* 915+ only */
+/*
+ * BSD (bit stream decoder instruction and interrupt control register defines
+ * (G4X and Ironlake only)
+ */
+
+#define BSD_RING_TAIL 0x04030
+#define BSD_RING_HEAD 0x04034
+#define BSD_RING_START 0x04038
+#define BSD_RING_CTL 0x0403c
+#define BSD_RING_ACTHD 0x04074
+#define BSD_HWS_PGA 0x04080
+
/*
* Framebuffer compression (915+ only)
@@ -2342,6 +2355,9 @@
#define GT_SYNC_STATUS (1 << 2)
#define GT_USER_INTERRUPT (1 << 0)
+#define GT_BSD_USER_INTERRUPT (1 << 5)
+
+
#define GTISR 0x44010
#define GTIMR 0x44014
#define GTIIR 0x44018
--
1.7.1
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