From cf4ce59b3b70238352c7f1729f0f7223214828ad Mon Sep 17 00:00:00 2001 From: hc <hc@nodka.com> Date: Fri, 20 Sep 2024 01:46:19 +0000 Subject: [PATCH] rtl88x2CE_WiFi_linux add concurrent mode --- kernel/include/drm/drm_vblank.h | 80 ++++++++++++++++++++++++++++++++------- 1 files changed, 65 insertions(+), 15 deletions(-) diff --git a/kernel/include/drm/drm_vblank.h b/kernel/include/drm/drm_vblank.h index e9c6763..dd125f8 100644 --- a/kernel/include/drm/drm_vblank.h +++ b/kernel/include/drm/drm_vblank.h @@ -27,13 +27,14 @@ #include <linux/seqlock.h> #include <linux/idr.h> #include <linux/poll.h> +#include <linux/kthread.h> #include <drm/drm_file.h> #include <drm/drm_modes.h> -#include <uapi/drm/drm.h> struct drm_device; struct drm_crtc; +struct drm_vblank_work; /** * struct drm_pending_vblank_event - pending vblank event tracking @@ -95,7 +96,7 @@ /** * @queue: Wait queue for vblank waiters. */ - wait_queue_head_t queue; /**< VBLANK wait queue */ + wait_queue_head_t queue; /** * @disable_timer: Disable timer for the delayed vblank disabling * hysteresis logic. Vblank disabling is controlled through the @@ -107,12 +108,23 @@ /** * @seqlock: Protect vblank count and time. */ - seqlock_t seqlock; /* protects vblank count and time */ + seqlock_t seqlock; /** - * @count: Current software vblank counter. + * @count: + * + * Current software vblank counter. + * + * Note that for a given vblank counter value drm_crtc_handle_vblank() + * and drm_crtc_vblank_count() or drm_crtc_vblank_count_and_time() + * provide a barrier: Any writes done before calling + * drm_crtc_handle_vblank() will be visible to callers of the later + * functions, iff the vblank count is the same or a later one. + * + * IMPORTANT: This guarantee requires barriers, therefor never access + * this field directly. Use drm_crtc_vblank_count() instead. */ - u64 count; + atomic64_t count; /** * @time: Vblank timestamp corresponding to @count. */ @@ -123,7 +135,7 @@ * this refcount reaches 0 can the hardware interrupt be disabled using * @disable_timer. */ - atomic_t refcount; /* number of users of vblank interruptsper crtc */ + atomic_t refcount; /** * @last: Protected by &drm_device.vbl_lock, used for wraparound handling. */ @@ -156,7 +168,7 @@ * call drm_crtc_vblank_off() and drm_crtc_vblank_on(), which explicitly * save and restore the vblank count. */ - unsigned int inmodeset; /* Display driver is setting mode */ + unsigned int inmodeset; /** * @pipe: drm_crtc_index() of the &drm_crtc corresponding to this * structure. @@ -164,13 +176,13 @@ unsigned int pipe; /** * @framedur_ns: Frame/Field duration in ns, used by - * drm_calc_vbltimestamp_from_scanoutpos() and computed by + * drm_crtc_vblank_helper_get_vblank_timestamp() and computed by * drm_calc_timestamping_constants(). */ int framedur_ns; /** * @linedur_ns: Line duration in ns, used by - * drm_calc_vbltimestamp_from_scanoutpos() and computed by + * drm_crtc_vblank_helper_get_vblank_timestamp() and computed by * drm_calc_timestamping_constants(). */ int linedur_ns; @@ -180,8 +192,8 @@ * * Cache of the current hardware display mode. Only valid when @enabled * is set. This is used by helpers like - * drm_calc_vbltimestamp_from_scanoutpos(). We can't just access the - * hardware mode by e.g. looking at &drm_crtc_state.adjusted_mode, + * drm_crtc_vblank_helper_get_vblank_timestamp(). We can't just access + * the hardware mode by e.g. looking at &drm_crtc_state.adjusted_mode, * because that one is really hard to get from interrupt context. */ struct drm_display_mode hwmode; @@ -193,9 +205,28 @@ * disabling functions multiple times. */ bool enabled; + + /** + * @worker: The &kthread_worker used for executing vblank works. + */ + struct kthread_worker *worker; + + /** + * @pending_work: A list of scheduled &drm_vblank_work items that are + * waiting for a future vblank. + */ + struct list_head pending_work; + + /** + * @work_wait_queue: The wait queue used for signaling that a + * &drm_vblank_work item has either finished executing, or was + * cancelled. + */ + wait_queue_head_t work_wait_queue; }; int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs); +bool drm_dev_has_vblank(const struct drm_device *dev); u64 drm_crtc_vblank_count(struct drm_crtc *crtc); u64 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc, ktime_t *vblanktime); @@ -219,13 +250,32 @@ void drm_vblank_restore(struct drm_device *dev, unsigned int pipe); void drm_crtc_vblank_restore(struct drm_crtc *crtc); -bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, - unsigned int pipe, int *max_error, - ktime_t *vblank_time, - bool in_vblank_irq); void drm_calc_timestamping_constants(struct drm_crtc *crtc, const struct drm_display_mode *mode); wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc); void drm_crtc_set_max_vblank_count(struct drm_crtc *crtc, u32 max_vblank_count); + +/* + * Helpers for struct drm_crtc_funcs + */ + +typedef bool (*drm_vblank_get_scanout_position_func)(struct drm_crtc *crtc, + bool in_vblank_irq, + int *vpos, int *hpos, + ktime_t *stime, + ktime_t *etime, + const struct drm_display_mode *mode); + +bool +drm_crtc_vblank_helper_get_vblank_timestamp_internal(struct drm_crtc *crtc, + int *max_error, + ktime_t *vblank_time, + bool in_vblank_irq, + drm_vblank_get_scanout_position_func get_scanout_position); +bool drm_crtc_vblank_helper_get_vblank_timestamp(struct drm_crtc *crtc, + int *max_error, + ktime_t *vblank_time, + bool in_vblank_irq); + #endif -- Gitblit v1.6.2