diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 76914ae65c31..2d5bce643e6a 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -85,7 +85,6 @@ struct drm_i915_gem_phys_object { }; typedef struct _drm_i915_ring_buffer { - int tail_mask; unsigned long Size; u8 *virtual_start; int head; @@ -790,33 +789,32 @@ extern void intel_modeset_cleanup(struct drm_device *dev); #define I915_VERBOSE 0 -#define RING_LOCALS unsigned int outring, ringmask, outcount; \ - volatile char *virt; - -#define BEGIN_LP_RING(n) do { \ - if (I915_VERBOSE) \ - DRM_DEBUG("BEGIN_LP_RING(%d)\n", (n)); \ - if (dev_priv->ring.space < (n)*4) \ - i915_wait_ring(dev, (n)*4, __func__); \ - outcount = 0; \ - outring = dev_priv->ring.tail; \ - ringmask = dev_priv->ring.tail_mask; \ - virt = dev_priv->ring.virtual_start; \ +#define RING_LOCALS volatile unsigned int *ring_virt__; + +#define BEGIN_LP_RING(n) do { \ + int bytes__ = 4*(n); \ + if (I915_VERBOSE) DRM_DEBUG("BEGIN_LP_RING(%d)\n", (n)); \ + /* a wrap must occur between instructions so pad beforehand */ \ + if (unlikely (dev_priv->ring.tail + bytes__ > dev_priv->ring.Size)) \ + i915_wrap_ring(dev); \ + if (unlikely (dev_priv->ring.space < bytes__)) \ + i915_wait_ring(dev, bytes__, __func__); \ + ring_virt__ = (unsigned int *) \ + (dev_priv->ring.virtual_start + dev_priv->ring.tail); \ + dev_priv->ring.tail += bytes__; \ + dev_priv->ring.tail &= dev_priv->ring.Size - 1; \ + dev_priv->ring.space -= bytes__; \ } while (0) -#define OUT_RING(n) do { \ +#define OUT_RING(n) do { \ if (I915_VERBOSE) DRM_DEBUG(" OUT_RING %x\n", (int)(n)); \ - *(volatile unsigned int *)(virt + outring) = (n); \ - outcount++; \ - outring += 4; \ - outring &= ringmask; \ + *ring_virt__++ = (n); \ } while (0) #define ADVANCE_LP_RING() do { \ - if (I915_VERBOSE) DRM_DEBUG("ADVANCE_LP_RING %x\n", outring); \ - dev_priv->ring.tail = outring; \ - dev_priv->ring.space -= outcount * 4; \ - I915_WRITE(PRB0_TAIL, outring); \ + if (I915_VERBOSE) \ + DRM_DEBUG("ADVANCE_LP_RING %x\n", dev_priv->ring.tail); \ + I915_WRITE(PRB0_TAIL, dev_priv->ring.tail); \ } while(0) /** @@ -839,6 +837,7 @@ extern void intel_modeset_cleanup(struct drm_device *dev); #define I915_GEM_HWS_INDEX 0x20 #define I915_BREADCRUMB_INDEX 0x21 +extern int i915_wrap_ring(struct drm_device * dev); extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller); #define IS_I830(dev) ((dev)->pci_device == 0x3577) |