r600g: fix cache flushes on r6xx
r6xx asics have some problems with the surface sync logic for the CB and DB. It's recommended to use the event write interface for flushing the DB/CB caches rather than the sync packets. A single event write flush flushes all dst caches, so we only need one for all CBs and DB. Should fix: https://bugs.freedesktop.org/show_bug.cgi?id=35312 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -235,6 +235,7 @@ struct r600_query {
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#define R600_CONTEXT_DRAW_PENDING (1 << 0)
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#define R600_CONTEXT_DST_CACHES_DIRTY (1 << 1)
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#define R600_CONTEXT_CHECK_EVENT_FLUSH (1 << 2)
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struct r600_context {
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struct radeon *radeon;
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@ -797,19 +797,33 @@ void r600_context_bo_flush(struct r600_context *ctx, unsigned flush_flags,
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unsigned flush_mask, struct r600_bo *rbo)
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{
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struct radeon_bo *bo;
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boolean use_event_flush = FALSE;
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bo = rbo->bo;
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/* if bo has already been flushed */
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if (!(~bo->last_flush & flush_flags)) {
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bo->last_flush &= flush_mask;
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return;
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}
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ctx->pm4[ctx->pm4_cdwords++] = PKT3(PKT3_SURFACE_SYNC, 3, ctx->predicate_drawing);
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ctx->pm4[ctx->pm4_cdwords++] = flush_flags;
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ctx->pm4[ctx->pm4_cdwords++] = (bo->size + 255) >> 8;
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ctx->pm4[ctx->pm4_cdwords++] = 0x00000000;
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ctx->pm4[ctx->pm4_cdwords++] = 0x0000000A;
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ctx->pm4[ctx->pm4_cdwords++] = PKT3(PKT3_NOP, 0, ctx->predicate_drawing);
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ctx->pm4[ctx->pm4_cdwords++] = bo->reloc_id;
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if ((ctx->radeon->family < CHIP_RV770) &&
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(G_0085F0_CB_ACTION_ENA(flush_flags) ||
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G_0085F0_DB_ACTION_ENA(flush_flags)))
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use_event_flush = TRUE;
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if (use_event_flush && (ctx->flags & R600_CONTEXT_CHECK_EVENT_FLUSH)) {
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ctx->pm4[ctx->pm4_cdwords++] = PKT3(PKT3_EVENT_WRITE, 0, ctx->predicate_drawing);
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ctx->pm4[ctx->pm4_cdwords++] = EVENT_TYPE(EVENT_TYPE_CACHE_FLUSH_AND_INV_EVENT) | EVENT_INDEX(0);
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ctx->flags &= ~R600_CONTEXT_CHECK_EVENT_FLUSH;
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} else {
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ctx->pm4[ctx->pm4_cdwords++] = PKT3(PKT3_SURFACE_SYNC, 3, ctx->predicate_drawing);
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ctx->pm4[ctx->pm4_cdwords++] = flush_flags;
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ctx->pm4[ctx->pm4_cdwords++] = (bo->size + 255) >> 8;
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ctx->pm4[ctx->pm4_cdwords++] = 0x00000000;
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ctx->pm4[ctx->pm4_cdwords++] = 0x0000000A;
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ctx->pm4[ctx->pm4_cdwords++] = PKT3(PKT3_NOP, 0, ctx->predicate_drawing);
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ctx->pm4[ctx->pm4_cdwords++] = bo->reloc_id;
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}
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bo->last_flush = (bo->last_flush | flush_flags) & flush_mask;
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}
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@ -1119,6 +1133,7 @@ void r600_context_block_emit_dirty(struct r600_context *ctx, struct r600_block *
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goto out;
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}
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ctx->flags |= R600_CONTEXT_CHECK_EVENT_FLUSH;
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for (int j = 0; j < block->nreg; j++) {
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if (block->pm4_bo_index[j]) {
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/* find relocation */
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@ -1132,6 +1147,7 @@ void r600_context_block_emit_dirty(struct r600_context *ctx, struct r600_block *
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block->reloc[id].bo);
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}
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}
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ctx->flags &= ~R600_CONTEXT_CHECK_EVENT_FLUSH;
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memcpy(&ctx->pm4[ctx->pm4_cdwords], block->pm4, block->pm4_ndwords * 4);
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ctx->pm4_cdwords += block->pm4_ndwords;
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@ -1155,6 +1171,7 @@ void r600_context_flush_dest_caches(struct r600_context *ctx)
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{
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struct r600_bo *cb[8];
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struct r600_bo *db;
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int i;
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if (!(ctx->flags & R600_CONTEXT_DST_CACHES_DIRTY))
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return;
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@ -1169,8 +1186,9 @@ void r600_context_flush_dest_caches(struct r600_context *ctx)
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cb[6] = r600_context_reg_bo(ctx, R_028058_CB_COLOR6_BASE);
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cb[7] = r600_context_reg_bo(ctx, R_02805C_CB_COLOR7_BASE);
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ctx->flags |= R600_CONTEXT_CHECK_EVENT_FLUSH;
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/* flush the color buffers */
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for (int i = 0; i < 8; i++) {
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for (i = 0; i < 8; i++) {
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if (!cb[i])
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continue;
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@ -1182,7 +1200,7 @@ void r600_context_flush_dest_caches(struct r600_context *ctx)
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if (db) {
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r600_context_bo_flush(ctx, S_0085F0_DB_ACTION_ENA(1), 0, db);
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}
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ctx->flags &= ~R600_CONTEXT_CHECK_EVENT_FLUSH;
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ctx->flags &= ~R600_CONTEXT_DST_CACHES_DIRTY;
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}
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