drm/i915: Generalize ring_space to take a ringbuf

It's simple enough that it doesn't need to know anything about the
engine.

Trivial change.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 40b17f246a696288885b9d1e8e143dce0ee0ce83..738140c0f5adada76a5228bb2fc18c759a897692 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -48,9 +48,8 @@ static inline int __ring_space(int head, int tail, int size)
        return space;
 }
 
-static inline int ring_space(struct intel_engine_cs *ring)
+static inline int ring_space(struct intel_ringbuffer *ringbuf)
 {
-       struct intel_ringbuffer *ringbuf = ring->buffer;
        return __ring_space(ringbuf->head & HEAD_ADDR, ringbuf->tail, ringbuf->size);
 }
 
@@ -545,7 +544,7 @@ static int init_ring_common(struct intel_engine_cs *ring)
        else {
                ringbuf->head = I915_READ_HEAD(ring);
                ringbuf->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
-               ringbuf->space = ring_space(ring);
+               ringbuf->space = ring_space(ringbuf);
                ringbuf->last_retired_head = -1;
        }
 
@@ -1639,7 +1638,7 @@ static int intel_ring_wait_request(struct intel_engine_cs *ring, int n)
                ringbuf->head = ringbuf->last_retired_head;
                ringbuf->last_retired_head = -1;
 
-               ringbuf->space = ring_space(ring);
+               ringbuf->space = ring_space(ringbuf);
                if (ringbuf->space >= n)
                        return 0;
        }
@@ -1662,7 +1661,7 @@ static int intel_ring_wait_request(struct intel_engine_cs *ring, int n)
        ringbuf->head = ringbuf->last_retired_head;
        ringbuf->last_retired_head = -1;
 
-       ringbuf->space = ring_space(ring);
+       ringbuf->space = ring_space(ringbuf);
        return 0;
 }
 
@@ -1691,7 +1690,7 @@ static int ring_wait_for_space(struct intel_engine_cs *ring, int n)
        trace_i915_ring_wait_begin(ring);
        do {
                ringbuf->head = I915_READ_HEAD(ring);
-               ringbuf->space = ring_space(ring);
+               ringbuf->space = ring_space(ringbuf);
                if (ringbuf->space >= n) {
                        ret = 0;
                        break;
@@ -1743,7 +1742,7 @@ static int intel_wrap_ring_buffer(struct intel_engine_cs *ring)
                iowrite32(MI_NOOP, virt++);
 
        ringbuf->tail = 0;
-       ringbuf->space = ring_space(ring);
+       ringbuf->space = ring_space(ringbuf);
 
        return 0;
 }