freedreno: limit string marker to max packet size

Experimentally derived max size.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

diff --git a/src/gallium/drivers/freedreno/freedreno_context.c b/src/gallium/drivers/freedreno/freedreno_context.c
index c5ea86f..c54bb10 100644 (file)
--- a/src/gallium/drivers/freedreno/freedreno_context.c
+++ b/src/gallium/drivers/freedreno/freedreno_context.c
@@ -152,6 +152,9 @@ fd_emit_string_marker(struct pipe_context *pctx, const char *string, int len)
        struct fd_ringbuffer *ring = ctx->ring;
        const uint32_t *buf = (const void *)string;
 
+       /* max packet size is 0x3fff dwords: */
+       len = MIN2(len, 0x3fff * 4);
+
        OUT_PKT3(ring, CP_NOP, align(len, 4) / 4);
        while (len >= 4) {
                OUT_RING(ring, *buf);