Mesa (master): radeon/compute: Implement PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY

[Tom Stellard]

Module: Mesa
Branch: master
Commit: 0a41054b7faa9df4e4b8802f646a7e078389eb89
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=0a41054b7faa9df4e4b8802f646a7e078389eb89

Author: Tom Stellard <thomas.stellard at amd.com>
Date:   Fri Apr 18 16:28:40 2014 +0200

radeon/compute: Implement PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY

Igor Gnatenko:
  v2: in define RADEON_INFO_MAX_SCLK use 0x1a instead of 0x19 (upstream changes)

Bruno Jiménez:
  v3: Convert the frequency to MHz from kHz after getting it in
  'do_winsys_init'

Signed-off-by: Igor Gnatenko <i.gnatenko.brain at gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard at amd.com>

---

 src/gallium/drivers/radeon/r600_pipe_common.c     |    7 +++++++
 src/gallium/winsys/radeon/drm/radeon_drm_winsys.c |    5 +++++
 src/gallium/winsys/radeon/drm/radeon_winsys.h     |    1 +
 3 files changed, 13 insertions(+)

diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c b/src/gallium/drivers/radeon/r600_pipe_common.c
index 7508865..957186a 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.c
+++ b/src/gallium/drivers/radeon/r600_pipe_common.c
@@ -505,6 +505,13 @@ static int r600_get_compute_param(struct pipe_screen *screen,
 		}
 		return sizeof(uint64_t);
 
+	case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
+		if (ret) {
+			uint32_t *max_clock_frequency = ret;
+			*max_clock_frequency = rscreen->info.max_sclk;
+		}
+		return sizeof(uint32_t);
+
 	default:
 		fprintf(stderr, "unknown PIPE_COMPUTE_CAP %d\n", param);
 		return 0;
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
index b53beba..7618316 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
@@ -317,6 +317,11 @@ static boolean do_winsys_init(struct radeon_drm_winsys *ws)
     ws->info.gart_size = gem_info.gart_size;
     ws->info.vram_size = gem_info.vram_size;
 
+    /* Get max clock frequency info and convert it to MHz */
+    radeon_get_drm_value(ws->fd, RADEON_INFO_MAX_SCLK, NULL,
+                         &ws->info.max_sclk);
+    ws->info.max_sclk /= 1000;
+
     ws->num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 
     /* Generation-specific queries. */
diff --git a/src/gallium/winsys/radeon/drm/radeon_winsys.h b/src/gallium/winsys/radeon/drm/radeon_winsys.h
index fe0617b..1cb17bb 100644
--- a/src/gallium/winsys/radeon/drm/radeon_winsys.h
+++ b/src/gallium/winsys/radeon/drm/radeon_winsys.h
@@ -196,6 +196,7 @@ struct radeon_info {
     enum chip_class             chip_class;
     uint32_t                    gart_size;
     uint32_t                    vram_size;
+    uint32_t                    max_sclk;
 
     uint32_t                    drm_major; /* version */
     uint32_t                    drm_minor;