diff options
Diffstat (limited to 'mali_kbase/platform/pixel/pixel_gpu_slc.c')
| -rw-r--r-- | mali_kbase/platform/pixel/pixel_gpu_slc.c | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/mali_kbase/platform/pixel/pixel_gpu_slc.c b/mali_kbase/platform/pixel/pixel_gpu_slc.c index 8e46be1..e8aae75 100644 --- a/mali_kbase/platform/pixel/pixel_gpu_slc.c +++ b/mali_kbase/platform/pixel/pixel_gpu_slc.c @@ -17,6 +17,37 @@ #include "mali_kbase_config_platform.h" #include "pixel_gpu_slc.h" +#include <uapi/gpu/arm/midgard/platform/pixel/pixel_memory_group_manager.h> + +/** + * enum slc_vote_state - Whether a context is voting for SLC + */ +enum slc_vote_state { + /** @IDLE: Idle, not voting for SLC */ + IDLE = 0, + /** @VOTING: Active, voting for SLC */ + VOTING = 1, +}; + +/** + * transition() - Try to transition from one value to another + * + * @v: Value to transition + * @old: Starting state to transition from + * @new: Destination state to transition to + * + * Return: Whether the transition was successful + */ +static bool transition(int *v, int old, int new) +{ + bool const cond = *v == old; + + if (cond) + *v = new; + + return cond; +} + /** * gpu_pixel_handle_buffer_liveness_update_ioctl() - See gpu_slc_liveness_update * @@ -57,7 +88,11 @@ int gpu_slc_kctx_init(struct kbase_context *kctx) */ void gpu_slc_kctx_term(struct kbase_context *kctx) { - (void)kctx; + struct pixel_platform_data *pd = kctx->platform_data; + + /* Contexts can be terminated without being idled first */ + if (transition(&pd->slc_vote, VOTING, IDLE)) + pixel_mgm_slc_dec_refcount(kctx->kbdev->mgm_dev); } /** @@ -67,7 +102,12 @@ void gpu_slc_kctx_term(struct kbase_context *kctx) */ void gpu_slc_kctx_active(struct kbase_context *kctx) { - (void)kctx; + struct pixel_platform_data *pd = kctx->platform_data; + + lockdep_assert_held(&kctx->kbdev->hwaccess_lock); + + if (transition(&pd->slc_vote, IDLE, VOTING)) + pixel_mgm_slc_inc_refcount(kctx->kbdev->mgm_dev); } /** @@ -77,7 +117,12 @@ void gpu_slc_kctx_active(struct kbase_context *kctx) */ void gpu_slc_kctx_idle(struct kbase_context *kctx) { - (void)kctx; + struct pixel_platform_data *pd = kctx->platform_data; + + lockdep_assert_held(&kctx->kbdev->hwaccess_lock); + + if (transition(&pd->slc_vote, VOTING, IDLE)) + pixel_mgm_slc_dec_refcount(kctx->kbdev->mgm_dev); } /** |