radeon/uvd: add session context buffer for polaris 10/11 v2

This way we have unlimited UVD sessions.

v2: only enable it when kernel supports it as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>

diff --git a/src/gallium/drivers/radeon/radeon_uvd.c b/src/gallium/drivers/radeon/radeon_uvd.c
index 10bed7c..d5d654a 100644 (file)
--- a/src/gallium/drivers/radeon/radeon_uvd.c
+++ b/src/gallium/drivers/radeon/radeon_uvd.c
@@ -59,6 +59,7 @@
 #define FB_BUFFER_SIZE 2048
 #define FB_BUFFER_SIZE_TONGA (2048 * 64)
 #define IT_SCALING_TABLE_SIZE 992
+#define UVD_SESSION_CONTEXT_SIZE (128 * 1024)
 
 /* UVD decoder representation */
 struct ruvd_decoder {
@@ -89,6 +90,7 @@ struct ruvd_decoder {
        struct rvid_buffer              dpb;
        bool                            use_legacy;
        struct rvid_buffer              ctx;
+       struct rvid_buffer              sessionctx;
 };
 
 /* flush IB to the hardware */
@@ -170,6 +172,12 @@ static void send_msg_buf(struct ruvd_decoder *dec)
        dec->fb = NULL;
        dec->it = NULL;
 
+
+       if (dec->sessionctx.res)
+               send_cmd(dec, RUVD_CMD_SESSION_CONTEXT_BUFFER,
+                        dec->sessionctx.res->buf, 0, RADEON_USAGE_READWRITE,
+                        RADEON_DOMAIN_VRAM);
+
        /* and send it to the hardware */
        send_cmd(dec, RUVD_CMD_MSG_BUFFER, buf->res->buf, 0,
                 RADEON_USAGE_READ, RADEON_DOMAIN_GTT);
@@ -938,6 +946,7 @@ static void ruvd_destroy(struct pipe_video_codec *decoder)
 
        rvid_destroy_buffer(&dec->dpb);
        rvid_destroy_buffer(&dec->ctx);
+       rvid_destroy_buffer(&dec->sessionctx);
 
        FREE(dec);
 }
@@ -1259,6 +1268,16 @@ struct pipe_video_codec *ruvd_create_decoder(struct pipe_context *context,
                rvid_clear_buffer(context, &dec->ctx);
        }
 
+       if (info.family >= CHIP_POLARIS10 && info.drm_minor >= 3) {
+               if (!rvid_create_buffer(dec->screen, &dec->sessionctx,
+                                       UVD_SESSION_CONTEXT_SIZE,
+                                       PIPE_USAGE_DEFAULT)) {
+                       RVID_ERR("Can't allocated session ctx.\n");
+                       goto error;
+               }
+               rvid_clear_buffer(context, &dec->sessionctx);
+       }
+
        map_msg_fb_it_buf(dec);
        dec->msg->size = sizeof(*dec->msg);
        dec->msg->msg_type = RUVD_MSG_CREATE;
@@ -1286,6 +1305,7 @@ error:
 
        rvid_destroy_buffer(&dec->dpb);
        rvid_destroy_buffer(&dec->ctx);
+       rvid_destroy_buffer(&dec->sessionctx);
 
        FREE(dec);
 

diff --git a/src/gallium/drivers/radeon/radeon_uvd.h b/src/gallium/drivers/radeon/radeon_uvd.h
index bb1782a..e3f8504 100644 (file)
--- a/src/gallium/drivers/radeon/radeon_uvd.h
+++ b/src/gallium/drivers/radeon/radeon_uvd.h
@@ -61,6 +61,7 @@
 #define RUVD_CMD_DPB_BUFFER            0x00000001
 #define RUVD_CMD_DECODING_TARGET_BUFFER        0x00000002
 #define RUVD_CMD_FEEDBACK_BUFFER       0x00000003
+#define RUVD_CMD_SESSION_CONTEXT_BUFFER        0x00000005
 #define RUVD_CMD_BITSTREAM_BUFFER      0x00000100
 #define RUVD_CMD_ITSCALING_TABLE_BUFFER        0x00000204
 #define RUVD_CMD_CONTEXT_BUFFER                0x00000206