From 96f298aa9c9fc9b7c8a2ebaf8c195d178f570e09 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Sat, 19 Mar 2011 18:14:27 -0700 Subject: drm/1915: ringbuffer wait for idle function Added a new function which waits for the ringbuffer space to be equal to (total - 8). This is the empty condition of the ringbuffer, and equivalent to head==tail. Also modified two users of this functionality elsewhere in the code. Signed-off-by: Ben Widawsky Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/intel_ringbuffer.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h') diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index f23cc5f037a6..16cb125eb117 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -164,7 +164,13 @@ intel_read_status_page(struct intel_ring_buffer *ring, #define I915_BREADCRUMB_INDEX 0x21 void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring); + int __must_check intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n); +static inline int intel_wait_ring_idle(struct intel_ring_buffer *ring) +{ + return intel_wait_ring_buffer(ring, ring->space - 8); +} + int __must_check intel_ring_begin(struct intel_ring_buffer *ring, int n); static inline void intel_ring_emit(struct intel_ring_buffer *ring, -- cgit v1.2.3 From b7287d8054d219b3009f7ca82edf24f89fd363e5 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Mon, 25 Apr 2011 11:22:22 -0700 Subject: drm/i915: proper use of forcewake Moved the macros around to properly do reads and writes for the given GPU. This is to address special requirements for gen6 (SNB) reads and writes. Registers in the range 0-0x40000 on gen6 platforms require special handling. Instead of relying on the callers to pick the registers correctly, move the logic into the read and write functions. Signed-off-by: Ben Widawsky Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/intel_ringbuffer.h | 29 +++++++++++++---------------- 1 file changed, 13 insertions(+), 16 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h') diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 16cb125eb117..c0e0ee63fbf4 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -14,27 +14,24 @@ struct intel_hw_status_page { struct drm_i915_gem_object *obj; }; -#define I915_RING_READ(reg) i915_gt_read(dev_priv, reg) -#define I915_RING_WRITE(reg, val) i915_gt_write(dev_priv, reg, val) +#define I915_READ_TAIL(ring) I915_READ(RING_TAIL((ring)->mmio_base)) +#define I915_WRITE_TAIL(ring, val) I915_WRITE(RING_TAIL((ring)->mmio_base), val) -#define I915_READ_TAIL(ring) I915_RING_READ(RING_TAIL((ring)->mmio_base)) -#define I915_WRITE_TAIL(ring, val) I915_RING_WRITE(RING_TAIL((ring)->mmio_base), val) +#define I915_READ_START(ring) I915_READ(RING_START((ring)->mmio_base)) +#define I915_WRITE_START(ring, val) I915_WRITE(RING_START((ring)->mmio_base), val) -#define I915_READ_START(ring) I915_RING_READ(RING_START((ring)->mmio_base)) -#define I915_WRITE_START(ring, val) I915_RING_WRITE(RING_START((ring)->mmio_base), val) +#define I915_READ_HEAD(ring) I915_READ(RING_HEAD((ring)->mmio_base)) +#define I915_WRITE_HEAD(ring, val) I915_WRITE(RING_HEAD((ring)->mmio_base), val) -#define I915_READ_HEAD(ring) I915_RING_READ(RING_HEAD((ring)->mmio_base)) -#define I915_WRITE_HEAD(ring, val) I915_RING_WRITE(RING_HEAD((ring)->mmio_base), val) +#define I915_READ_CTL(ring) I915_READ(RING_CTL((ring)->mmio_base)) +#define I915_WRITE_CTL(ring, val) I915_WRITE(RING_CTL((ring)->mmio_base), val) -#define I915_READ_CTL(ring) I915_RING_READ(RING_CTL((ring)->mmio_base)) -#define I915_WRITE_CTL(ring, val) I915_RING_WRITE(RING_CTL((ring)->mmio_base), val) +#define I915_READ_IMR(ring) I915_READ(RING_IMR((ring)->mmio_base)) +#define I915_WRITE_IMR(ring, val) I915_WRITE(RING_IMR((ring)->mmio_base), val) -#define I915_READ_IMR(ring) I915_RING_READ(RING_IMR((ring)->mmio_base)) -#define I915_WRITE_IMR(ring, val) I915_RING_WRITE(RING_IMR((ring)->mmio_base), val) - -#define I915_READ_NOPID(ring) I915_RING_READ(RING_NOPID((ring)->mmio_base)) -#define I915_READ_SYNC_0(ring) I915_RING_READ(RING_SYNC_0((ring)->mmio_base)) -#define I915_READ_SYNC_1(ring) I915_RING_READ(RING_SYNC_1((ring)->mmio_base)) +#define I915_READ_NOPID(ring) I915_READ(RING_NOPID((ring)->mmio_base)) +#define I915_READ_SYNC_0(ring) I915_READ(RING_SYNC_0((ring)->mmio_base)) +#define I915_READ_SYNC_1(ring) I915_READ(RING_SYNC_1((ring)->mmio_base)) struct intel_ring_buffer { const char *name; -- cgit v1.2.3