From: Marco A Benatto marco.antonio.780@gmail.com
Adding a Frames Per Second estimation logic on UVD handles when it has being used. This estimation is per handle basis and will help on DPM profile calculation.
v2 (chk): fix timestamp type, move functions around and cleanup code a bit.
Signed-off-by: Marco A Benatto marco.antonio.780@gmail.com Signed-off-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/radeon/radeon.h | 10 ++++++ drivers/gpu/drm/radeon/radeon_uvd.c | 64 +++++++++++++++++++++++++++++++++---- 2 files changed, 68 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 9e1732e..e92f6cb 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1617,6 +1617,15 @@ int radeon_pm_get_type_index(struct radeon_device *rdev, #define RADEON_UVD_STACK_SIZE (1024*1024) #define RADEON_UVD_HEAP_SIZE (1024*1024)
+#define RADEON_UVD_FPS_EVENTS_MAX 8 +#define RADEON_UVD_DEFAULT_FPS 60 + +struct radeon_uvd_fps { + uint64_t timestamp; + uint8_t event_index; + uint8_t events[RADEON_UVD_FPS_EVENTS_MAX]; +}; + struct radeon_uvd { struct radeon_bo *vcpu_bo; void *cpu_addr; @@ -1626,6 +1635,7 @@ struct radeon_uvd { struct drm_file *filp[RADEON_MAX_UVD_HANDLES]; unsigned img_size[RADEON_MAX_UVD_HANDLES]; struct delayed_work idle_work; + struct radeon_uvd_fps fps_info[RADEON_MAX_UVD_HANDLES]; };
int radeon_uvd_init(struct radeon_device *rdev); diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c index 6bf55ec..ef5667a 100644 --- a/drivers/gpu/drm/radeon/radeon_uvd.c +++ b/drivers/gpu/drm/radeon/radeon_uvd.c @@ -237,6 +237,51 @@ void radeon_uvd_force_into_uvd_segment(struct radeon_bo *rbo) rbo->placement.lpfn = (256 * 1024 * 1024) >> PAGE_SHIFT; }
+static void radeon_uvd_fps_clear_events(struct radeon_device *rdev, int idx) +{ + struct radeon_uvd_fps *fps = &rdev->uvd.fps_info[idx]; + unsigned i; + + fps->timestamp = jiffies_64; + fps->event_index = 0; + for (i = 0; i < RADEON_UVD_FPS_EVENTS_MAX; i++) + fps->events[i] = 0; +} + +static void radeon_uvd_fps_note_event(struct radeon_device *rdev, int idx) +{ + struct radeon_uvd_fps *fps = &rdev->uvd.fps_info[idx]; + uint64_t timestamp = jiffies_64; + unsigned rate = 0; + + uint8_t index = fps->event_index++; + fps->event_index %= RADEON_UVD_FPS_EVENTS_MAX; + + rate = div64_u64(HZ, max(timestamp - fps->timestamp, 1ULL)); + + fps->timestamp = timestamp; + fps->events[index] = min(rate, 120u); +} + +static unsigned radeon_uvd_estimate_fps(struct radeon_device *rdev, int idx) +{ + struct radeon_uvd_fps *fps = &rdev->uvd.fps_info[idx]; + unsigned i, valid = 0, count = 0; + + for (i = 0; i < RADEON_UVD_FPS_EVENTS_MAX; i++) { + /* We should ignore zero values */ + if (fps->events[i] != 0) { + count += fps->events[i]; + valid++; + } + } + + if (valid > 0) + return count / valid; + else + return RADEON_UVD_DEFAULT_FPS; +} + void radeon_uvd_free_handles(struct radeon_device *rdev, struct drm_file *filp) { int i, r; @@ -419,8 +464,10 @@ static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo,
/* create or decode, validate the handle */ for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) { - if (atomic_read(&p->rdev->uvd.handles[i]) == handle) + if (atomic_read(&p->rdev->uvd.handles[i]) == handle) { + radeon_uvd_fps_note_event(p->rdev, i); return 0; + } }
/* handle not found try to alloc a new one */ @@ -428,6 +475,7 @@ static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo, if (!atomic_cmpxchg(&p->rdev->uvd.handles[i], 0, handle)) { p->rdev->uvd.filp[i] = p->filp; p->rdev->uvd.img_size[i] = img_size; + radeon_uvd_fps_clear_events(p->rdev, i); return 0; } } @@ -763,7 +811,7 @@ int radeon_uvd_get_destroy_msg(struct radeon_device *rdev, int ring, static void radeon_uvd_count_handles(struct radeon_device *rdev, unsigned *sd, unsigned *hd) { - unsigned i; + unsigned i, fps_rate = 0;
*sd = 0; *hd = 0; @@ -772,10 +820,13 @@ static void radeon_uvd_count_handles(struct radeon_device *rdev, if (!atomic_read(&rdev->uvd.handles[i])) continue;
- if (rdev->uvd.img_size[i] >= 720*576) - ++(*hd); - else - ++(*sd); + fps_rate = radeon_uvd_estimate_fps(rdev, i); + + if (rdev->uvd.img_size[i] >= 720*576) { + (*hd) += fps_rate > 30 ? 1 : 2; + } else { + (*sd) += fps_rate > 30 ? 1 : 2; + } } }
@@ -805,6 +856,7 @@ void radeon_uvd_note_usage(struct radeon_device *rdev) set_clocks &= schedule_delayed_work(&rdev->uvd.idle_work, msecs_to_jiffies(UVD_IDLE_TIMEOUT_MS));
+ if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) { unsigned hd = 0, sd = 0; radeon_uvd_count_handles(rdev, &sd, &hd);