r600g: don't emit WAIT_UNTIL on cayman/TN (v2)

It shouldn't be needed and older kernels don't support
it.

v2: Replace with PS partial flush as before.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=59945

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>

diff --git a/src/gallium/drivers/r600/r600_hw_context.c b/src/gallium/drivers/r600/r600_hw_context.c
index 61299ef..ebafd97 100644 (file)
--- a/src/gallium/drivers/r600/r600_hw_context.c
+++ b/src/gallium/drivers/r600/r600_hw_context.c
@@ -612,6 +612,22 @@ void r600_flush_emit(struct r600_context *rctx)
                return;
        }
 
+       if (rctx->flags & R600_CONTEXT_WAIT_3D_IDLE) {
+               wait_until |= S_008040_WAIT_3D_IDLE(1);
+       }
+       if (rctx->flags & R600_CONTEXT_WAIT_CP_DMA_IDLE) {
+               wait_until |= S_008040_WAIT_CP_DMA_IDLE(1);
+       }
+
+       if (wait_until) {
+               /* Use of WAIT_UNTIL is deprecated on Cayman+ */
+               if (rctx->family >= CHIP_CAYMAN) {
+                       /* emit a PS partial flush on Cayman/TN */
+                       cs->buf[cs->cdw++] = PKT3(PKT3_EVENT_WRITE, 0, 0);
+                       cs->buf[cs->cdw++] = EVENT_TYPE(EVENT_TYPE_PS_PARTIAL_FLUSH) | EVENT_INDEX(4);
+               }
+       }
+
        if (rctx->chip_class >= R700 &&
            (rctx->flags & R600_CONTEXT_FLUSH_AND_INV_CB_META)) {
                cs->buf[cs->cdw++] = PKT3(PKT3_EVENT_WRITE, 0, 0);
@@ -674,15 +690,12 @@ void r600_flush_emit(struct r600_context *rctx)
                cs->buf[cs->cdw++] = 0x0000000A;      /* POLL_INTERVAL */
        }
 
-       if (rctx->flags & R600_CONTEXT_WAIT_3D_IDLE) {
-               wait_until |= S_008040_WAIT_3D_IDLE(1);
-       }
-       if (rctx->flags & R600_CONTEXT_WAIT_CP_DMA_IDLE) {
-               wait_until |= S_008040_WAIT_CP_DMA_IDLE(1);
-       }
        if (wait_until) {
-               /* wait for things to settle */
-               r600_write_config_reg(cs, R_008040_WAIT_UNTIL, wait_until);
+               /* Use of WAIT_UNTIL is deprecated on Cayman+ */
+               if (rctx->family < CHIP_CAYMAN) {
+                       /* wait for things to settle */
+                       r600_write_config_reg(cs, R_008040_WAIT_UNTIL, wait_until);
+               }
        }
 
        /* everything is properly flushed */
@@ -859,7 +872,13 @@ void r600_context_emit_fence(struct r600_context *ctx, struct r600_resource *fen
        va = r600_resource_va(&ctx->screen->screen, (void*)fence_bo);
        va = va + (offset << 2);
 
-       r600_write_config_reg(cs, R_008040_WAIT_UNTIL, S_008040_WAIT_3D_IDLE(1));
+       /* Use of WAIT_UNTIL is deprecated on Cayman+ */
+       if (ctx->family >= CHIP_CAYMAN) {
+               cs->buf[cs->cdw++] = PKT3(PKT3_EVENT_WRITE, 0, 0);
+               cs->buf[cs->cdw++] = EVENT_TYPE(EVENT_TYPE_PS_PARTIAL_FLUSH) | EVENT_INDEX(4);
+       } else {
+               r600_write_config_reg(cs, R_008040_WAIT_UNTIL, S_008040_WAIT_3D_IDLE(1));
+       }
 
        cs->buf[cs->cdw++] = PKT3(PKT3_EVENT_WRITE_EOP, 4, 0);
        cs->buf[cs->cdw++] = EVENT_TYPE(EVENT_TYPE_CACHE_FLUSH_AND_INV_TS_EVENT) | EVENT_INDEX(5);