diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 78 |
1 files changed, 72 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 2e8b51645bcb..17ef9cdf1b8d 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -40,6 +40,32 @@ struct intel_hw_status_page { #define I915_READ_MODE(ring) I915_READ(RING_MI_MODE((ring)->mmio_base)) #define I915_WRITE_MODE(ring, val) I915_WRITE(RING_MI_MODE((ring)->mmio_base), val) +/* seqno size is actually only a uint32, but since we plan to use MI_FLUSH_DW to + * do the writes, and that must have qw aligned offsets, simply pretend it's 8b. + */ +#define i915_semaphore_seqno_size sizeof(uint64_t) +#define GEN8_SIGNAL_OFFSET(__ring, to) \ + (i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \ + ((__ring)->id * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ + (i915_semaphore_seqno_size * (to))) + +#define GEN8_WAIT_OFFSET(__ring, from) \ + (i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \ + ((from) * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ + (i915_semaphore_seqno_size * (__ring)->id)) + +#define GEN8_RING_SEMAPHORE_INIT do { \ + if (!dev_priv->semaphore_obj) { \ + break; \ + } \ + ring->semaphore.signal_ggtt[RCS] = GEN8_SIGNAL_OFFSET(ring, RCS); \ + ring->semaphore.signal_ggtt[VCS] = GEN8_SIGNAL_OFFSET(ring, VCS); \ + ring->semaphore.signal_ggtt[BCS] = GEN8_SIGNAL_OFFSET(ring, BCS); \ + ring->semaphore.signal_ggtt[VECS] = GEN8_SIGNAL_OFFSET(ring, VECS); \ + ring->semaphore.signal_ggtt[VCS2] = GEN8_SIGNAL_OFFSET(ring, VCS2); \ + ring->semaphore.signal_ggtt[ring->id] = MI_SEMAPHORE_SYNC_INVALID; \ + } while(0) + enum intel_ring_hangcheck_action { HANGCHECK_IDLE = 0, HANGCHECK_WAIT, @@ -127,15 +153,55 @@ struct intel_engine_cs { #define I915_DISPATCH_PINNED 0x2 void (*cleanup)(struct intel_engine_cs *ring); + /* GEN8 signal/wait table - never trust comments! + * signal to signal to signal to signal to signal to + * RCS VCS BCS VECS VCS2 + * -------------------------------------------------------------------- + * RCS | NOP (0x00) | VCS (0x08) | BCS (0x10) | VECS (0x18) | VCS2 (0x20) | + * |------------------------------------------------------------------- + * VCS | RCS (0x28) | NOP (0x30) | BCS (0x38) | VECS (0x40) | VCS2 (0x48) | + * |------------------------------------------------------------------- + * BCS | RCS (0x50) | VCS (0x58) | NOP (0x60) | VECS (0x68) | VCS2 (0x70) | + * |------------------------------------------------------------------- + * VECS | RCS (0x78) | VCS (0x80) | BCS (0x88) | NOP (0x90) | VCS2 (0x98) | + * |------------------------------------------------------------------- + * VCS2 | RCS (0xa0) | VCS (0xa8) | BCS (0xb0) | VECS (0xb8) | NOP (0xc0) | + * |------------------------------------------------------------------- + * + * Generalization: + * f(x, y) := (x->id * NUM_RINGS * seqno_size) + (seqno_size * y->id) + * ie. transpose of g(x, y) + * + * sync from sync from sync from sync from sync from + * RCS VCS BCS VECS VCS2 + * -------------------------------------------------------------------- + * RCS | NOP (0x00) | VCS (0x28) | BCS (0x50) | VECS (0x78) | VCS2 (0xa0) | + * |------------------------------------------------------------------- + * VCS | RCS (0x08) | NOP (0x30) | BCS (0x58) | VECS (0x80) | VCS2 (0xa8) | + * |------------------------------------------------------------------- + * BCS | RCS (0x10) | VCS (0x38) | NOP (0x60) | VECS (0x88) | VCS2 (0xb0) | + * |------------------------------------------------------------------- + * VECS | RCS (0x18) | VCS (0x40) | BCS (0x68) | NOP (0x90) | VCS2 (0xb8) | + * |------------------------------------------------------------------- + * VCS2 | RCS (0x20) | VCS (0x48) | BCS (0x70) | VECS (0x98) | NOP (0xc0) | + * |------------------------------------------------------------------- + * + * Generalization: + * g(x, y) := (y->id * NUM_RINGS * seqno_size) + (seqno_size * x->id) + * ie. transpose of f(x, y) + */ struct { u32 sync_seqno[I915_NUM_RINGS-1]; - struct { - /* our mbox written by others */ - u32 wait[I915_NUM_RINGS]; - /* mboxes this ring signals to */ - u32 signal[I915_NUM_RINGS]; - } mbox; + union { + struct { + /* our mbox written by others */ + u32 wait[I915_NUM_RINGS]; + /* mboxes this ring signals to */ + u32 signal[I915_NUM_RINGS]; + } mbox; + u64 signal_ggtt[I915_NUM_RINGS]; + }; /* AKA wait() */ int (*sync_to)(struct intel_engine_cs *ring, |