From 8168bd48bb863c00747497aadf13884b2d69d287 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 11 Nov 2010 17:54:52 +0000 Subject: [PATCH] drm/i915: Remove the definitions for Primary Ring Buffer We only ever used the PRB0, neglecting the secondary ring buffers, and now with the advent of multiple engines with separate ring buffers we need to excise the anachronisms from our code (and be explicit about which ring we mean where). This is doubly important in light of the FORCEWAKE required to read ring buffer registers on SandyBridge. Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_dma.c | 4 ++-- drivers/gpu/drm/i915/i915_irq.c | 28 ++++++++++++++-------------- drivers/gpu/drm/i915/i915_reg.h | 10 ++++++---- drivers/gpu/drm/i915/intel_display.c | 10 +++++----- 4 files changed, 27 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 307bad0fcef7..4cd04917868d 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -106,8 +106,8 @@ void i915_kernel_lost_context(struct drm_device * dev) if (drm_core_check_feature(dev, DRIVER_MODESET)) return; - ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; - ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; + ring->head = I915_READ_HEAD(ring) & HEAD_ADDR; + ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR; ring->space = ring->head - (ring->tail + 8); if (ring->space < 0) ring->space += ring->size; diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 4a0664ea49b9..21034527d3a4 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -520,30 +520,30 @@ i915_get_bbaddr(struct drm_device *dev, u32 *ring) } static u32 -i915_ringbuffer_last_batch(struct drm_device *dev) +i915_ringbuffer_last_batch(struct drm_device *dev, + struct intel_ring_buffer *ring) { struct drm_i915_private *dev_priv = dev->dev_private; u32 head, bbaddr; - u32 *ring; + u32 *val; /* Locate the current position in the ringbuffer and walk back * to find the most recently dispatched batch buffer. */ bbaddr = 0; - head = I915_READ(PRB0_HEAD) & HEAD_ADDR; - ring = (u32 *)(dev_priv->render_ring.virtual_start + head); + head = I915_READ_HEAD(ring) & HEAD_ADDR; + val = (u32 *)(ring->virtual_start + head); - while (--ring >= (u32 *)dev_priv->render_ring.virtual_start) { - bbaddr = i915_get_bbaddr(dev, ring); + while (--val >= (u32 *)ring->virtual_start) { + bbaddr = i915_get_bbaddr(dev, val); if (bbaddr) break; } if (bbaddr == 0) { - ring = (u32 *)(dev_priv->render_ring.virtual_start - + dev_priv->render_ring.size); - while (--ring >= (u32 *)dev_priv->render_ring.virtual_start) { - bbaddr = i915_get_bbaddr(dev, ring); + val = (u32 *)(ring->virtual_start + ring->size); + while (--val >= (u32 *)ring->virtual_start) { + bbaddr = i915_get_bbaddr(dev, val); if (bbaddr) break; } @@ -628,7 +628,7 @@ static void i915_capture_error_state(struct drm_device *dev) error->bbaddr = 0; } - bbaddr = i915_ringbuffer_last_batch(dev); + bbaddr = i915_ringbuffer_last_batch(dev, &dev_priv->render_ring); /* Grab the current batchbuffer, most likely to have crashed. */ batchbuffer[0] = NULL; @@ -1398,10 +1398,10 @@ void i915_hangcheck_elapsed(unsigned long data) * and break the hang. This should work on * all but the second generation chipsets. */ - u32 tmp = I915_READ(PRB0_CTL); + struct intel_ring_buffer *ring = &dev_priv->render_ring; + u32 tmp = I915_READ_CTL(ring); if (tmp & RING_WAIT) { - I915_WRITE(PRB0_CTL, tmp); - POSTING_READ(PRB0_CTL); + I915_WRITE_CTL(ring, tmp); goto repeat; } } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 1eca8e710b9e..886c0e072490 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -256,10 +256,6 @@ * Instruction and interrupt control regs */ #define PGTBL_ER 0x02024 -#define PRB0_TAIL 0x02030 -#define PRB0_HEAD 0x02034 -#define PRB0_START 0x02038 -#define PRB0_CTL 0x0203c #define RENDER_RING_BASE 0x02000 #define BSD_RING_BASE 0x04000 #define GEN6_BSD_RING_BASE 0x12000 @@ -285,10 +281,16 @@ #define RING_INVALID 0x00000000 #define RING_WAIT_I8XX (1<<0) /* gen2, PRBx_HEAD */ #define RING_WAIT (1<<11) /* gen3+, PRBx_CTL */ +#if 0 +#define PRB0_TAIL 0x02030 +#define PRB0_HEAD 0x02034 +#define PRB0_START 0x02038 +#define PRB0_CTL 0x0203c #define PRB1_TAIL 0x02040 /* 915+ only */ #define PRB1_HEAD 0x02044 /* 915+ only */ #define PRB1_START 0x02048 /* 915+ only */ #define PRB1_CTL 0x0204c /* 915+ only */ +#endif #define IPEIR_I965 0x02064 #define IPEHR_I965 0x02068 #define INSTDONE_I965 0x0206c diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 63770c963077..6a7f11ff66f5 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1983,17 +1983,17 @@ static void intel_flush_display_plane(struct drm_device *dev, static void intel_clear_scanline_wait(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_ring_buffer *ring; u32 tmp; if (IS_GEN2(dev)) /* Can't break the hang on i8xx */ return; - tmp = I915_READ(PRB0_CTL); - if (tmp & RING_WAIT) { - I915_WRITE(PRB0_CTL, tmp); - POSTING_READ(PRB0_CTL); - } + ring = &dev_priv->render_ring; + tmp = I915_READ_CTL(ring); + if (tmp & RING_WAIT) + I915_WRITE_CTL(ring, tmp); } static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)