diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_global_state.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_global_state.c | 214 |
1 files changed, 187 insertions, 27 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_global_state.c b/drivers/gpu/drm/i915/display/intel_global_state.c index 7a19215ad844..30eff6009e87 100644 --- a/drivers/gpu/drm/i915/display/intel_global_state.c +++ b/drivers/gpu/drm/i915/display/intel_global_state.c @@ -3,19 +3,95 @@ * Copyright © 2020 Intel Corporation */ +#include <linux/pci.h> #include <linux/string.h> -#include "i915_drv.h" +#include <drm/drm_print.h> + #include "intel_atomic.h" +#include "intel_display_core.h" #include "intel_display_types.h" #include "intel_global_state.h" +#define for_each_new_global_obj_in_state(__state, obj, new_obj_state, __i) \ + for ((__i) = 0; \ + (__i) < (__state)->num_global_objs && \ + ((obj) = (__state)->global_objs[__i].ptr, \ + (new_obj_state) = (__state)->global_objs[__i].new_state, 1); \ + (__i)++) \ + for_each_if(obj) + +#define for_each_old_global_obj_in_state(__state, obj, old_obj_state, __i) \ + for ((__i) = 0; \ + (__i) < (__state)->num_global_objs && \ + ((obj) = (__state)->global_objs[__i].ptr, \ + (old_obj_state) = (__state)->global_objs[__i].old_state, 1); \ + (__i)++) \ + for_each_if(obj) + +#define for_each_oldnew_global_obj_in_state(__state, obj, old_obj_state, new_obj_state, __i) \ + for ((__i) = 0; \ + (__i) < (__state)->num_global_objs && \ + ((obj) = (__state)->global_objs[__i].ptr, \ + (old_obj_state) = (__state)->global_objs[__i].old_state, \ + (new_obj_state) = (__state)->global_objs[__i].new_state, 1); \ + (__i)++) \ + for_each_if(obj) + +struct intel_global_objs_state { + struct intel_global_obj *ptr; + struct intel_global_state *state, *old_state, *new_state; +}; + +struct intel_global_commit { + struct kref ref; + struct completion done; +}; + +static struct intel_global_commit *commit_new(void) +{ + struct intel_global_commit *commit; + + commit = kzalloc(sizeof(*commit), GFP_KERNEL); + if (!commit) + return NULL; + + init_completion(&commit->done); + kref_init(&commit->ref); + + return commit; +} + +static void __commit_free(struct kref *kref) +{ + struct intel_global_commit *commit = + container_of(kref, typeof(*commit), ref); + + kfree(commit); +} + +static struct intel_global_commit *commit_get(struct intel_global_commit *commit) +{ + if (commit) + kref_get(&commit->ref); + + return commit; +} + +static void commit_put(struct intel_global_commit *commit) +{ + if (commit) + kref_put(&commit->ref, __commit_free); +} + static void __intel_atomic_global_state_free(struct kref *kref) { struct intel_global_state *obj_state = container_of(kref, struct intel_global_state, ref); struct intel_global_obj *obj = obj_state->obj; + commit_put(obj_state->commit); + obj->funcs->atomic_destroy_state(obj, obj_state); } @@ -32,7 +108,7 @@ intel_atomic_global_state_get(struct intel_global_state *obj_state) return obj_state; } -void intel_atomic_global_obj_init(struct drm_i915_private *dev_priv, +void intel_atomic_global_obj_init(struct intel_display *display, struct intel_global_obj *obj, struct intel_global_state *state, const struct intel_global_state_funcs *funcs) @@ -45,26 +121,26 @@ void intel_atomic_global_obj_init(struct drm_i915_private *dev_priv, obj->state = state; obj->funcs = funcs; - list_add_tail(&obj->head, &dev_priv->global_obj_list); + list_add_tail(&obj->head, &display->global.obj_list); } -void intel_atomic_global_obj_cleanup(struct drm_i915_private *dev_priv) +void intel_atomic_global_obj_cleanup(struct intel_display *display) { struct intel_global_obj *obj, *next; - list_for_each_entry_safe(obj, next, &dev_priv->global_obj_list, head) { + list_for_each_entry_safe(obj, next, &display->global.obj_list, head) { list_del(&obj->head); - drm_WARN_ON(&dev_priv->drm, kref_read(&obj->state->ref) != 1); + drm_WARN_ON(display->drm, kref_read(&obj->state->ref) != 1); intel_atomic_global_state_put(obj->state); } } -static void assert_global_state_write_locked(struct drm_i915_private *dev_priv) +static void assert_global_state_write_locked(struct intel_display *display) { struct intel_crtc *crtc; - for_each_intel_crtc(&dev_priv->drm, crtc) + for_each_intel_crtc(display->drm, crtc) drm_modeset_lock_assert_held(&crtc->base.mutex); } @@ -83,26 +159,26 @@ static bool modeset_lock_is_held(struct drm_modeset_acquire_ctx *ctx, static void assert_global_state_read_locked(struct intel_atomic_state *state) { + struct intel_display *display = to_intel_display(state); struct drm_modeset_acquire_ctx *ctx = state->base.acquire_ctx; - struct drm_i915_private *dev_priv = to_i915(state->base.dev); struct intel_crtc *crtc; - for_each_intel_crtc(&dev_priv->drm, crtc) { + for_each_intel_crtc(display->drm, crtc) { if (modeset_lock_is_held(ctx, &crtc->base.mutex)) return; } - drm_WARN(&dev_priv->drm, 1, "Global state not read locked\n"); + drm_WARN(display->drm, 1, "Global state not read locked\n"); } struct intel_global_state * intel_atomic_get_global_obj_state(struct intel_atomic_state *state, struct intel_global_obj *obj) { - struct drm_i915_private *i915 = to_i915(state->base.dev); + struct intel_display *display = to_intel_display(state); int index, num_objs, i; size_t size; - struct __intel_global_objs_state *arr; + struct intel_global_objs_state *arr; struct intel_global_state *obj_state; for (i = 0; i < state->num_global_objs; i++) @@ -127,6 +203,8 @@ intel_atomic_get_global_obj_state(struct intel_atomic_state *state, obj_state->obj = obj; obj_state->changed = false; + obj_state->serialized = false; + obj_state->commit = NULL; kref_init(&obj_state->ref); @@ -139,7 +217,7 @@ intel_atomic_get_global_obj_state(struct intel_atomic_state *state, state->num_global_objs = num_objs; - drm_dbg_atomic(&i915->drm, "Added new global object %p state %p to %p\n", + drm_dbg_atomic(display->drm, "Added new global object %p state %p to %p\n", obj, obj_state, state); return obj_state; @@ -173,14 +251,14 @@ intel_atomic_get_new_global_obj_state(struct intel_atomic_state *state, void intel_atomic_swap_global_state(struct intel_atomic_state *state) { - struct drm_i915_private *dev_priv = to_i915(state->base.dev); + struct intel_display *display = to_intel_display(state); struct intel_global_state *old_obj_state, *new_obj_state; struct intel_global_obj *obj; int i; for_each_oldnew_global_obj_in_state(state, obj, old_obj_state, new_obj_state, i) { - drm_WARN_ON(&dev_priv->drm, obj->state != old_obj_state); + drm_WARN_ON(display->drm, obj->state != old_obj_state); /* * If the new state wasn't modified (and properly @@ -189,7 +267,7 @@ void intel_atomic_swap_global_state(struct intel_atomic_state *state) if (!new_obj_state->changed) continue; - assert_global_state_write_locked(dev_priv); + assert_global_state_write_locked(display); old_obj_state->state = state; new_obj_state->state = NULL; @@ -220,10 +298,10 @@ void intel_atomic_clear_global_state(struct intel_atomic_state *state) int intel_atomic_lock_global_state(struct intel_global_state *obj_state) { struct intel_atomic_state *state = obj_state->state; - struct drm_i915_private *dev_priv = to_i915(state->base.dev); + struct intel_display *display = to_intel_display(state); struct intel_crtc *crtc; - for_each_intel_crtc(&dev_priv->drm, crtc) { + for_each_intel_crtc(display->drm, crtc) { int ret; ret = drm_modeset_lock(&crtc->base.mutex, @@ -239,19 +317,101 @@ int intel_atomic_lock_global_state(struct intel_global_state *obj_state) int intel_atomic_serialize_global_state(struct intel_global_state *obj_state) { - struct intel_atomic_state *state = obj_state->state; - struct drm_i915_private *dev_priv = to_i915(state->base.dev); + int ret; + + ret = intel_atomic_lock_global_state(obj_state); + if (ret) + return ret; + + obj_state->serialized = true; + + return 0; +} + +bool +intel_atomic_global_state_is_serialized(struct intel_atomic_state *state) +{ + struct intel_display *display = to_intel_display(state); struct intel_crtc *crtc; - for_each_intel_crtc(&dev_priv->drm, crtc) { - struct intel_crtc_state *crtc_state; + for_each_intel_crtc(display->drm, crtc) + if (!intel_atomic_get_new_crtc_state(state, crtc)) + return false; + return true; +} + +int +intel_atomic_global_state_setup_commit(struct intel_atomic_state *state) +{ + const struct intel_global_state *old_obj_state; + struct intel_global_state *new_obj_state; + struct intel_global_obj *obj; + int i; - crtc_state = intel_atomic_get_crtc_state(&state->base, crtc); - if (IS_ERR(crtc_state)) - return PTR_ERR(crtc_state); + for_each_oldnew_global_obj_in_state(state, obj, old_obj_state, + new_obj_state, i) { + struct intel_global_commit *commit = NULL; + + if (new_obj_state->serialized) { + /* + * New commit which is going to be completed + * after the hardware reprogramming is done. + */ + commit = commit_new(); + if (!commit) + return -ENOMEM; + } else if (new_obj_state->changed) { + /* + * We're going to swap to this state, so carry the + * previous commit along, in case it's not yet done. + */ + commit = commit_get(old_obj_state->commit); + } + + new_obj_state->commit = commit; } - obj_state->changed = true; + return 0; +} + +int +intel_atomic_global_state_wait_for_dependencies(struct intel_atomic_state *state) +{ + struct intel_display *display = to_intel_display(state); + const struct intel_global_state *old_obj_state; + struct intel_global_obj *obj; + int i; + + for_each_old_global_obj_in_state(state, obj, old_obj_state, i) { + struct intel_global_commit *commit = old_obj_state->commit; + long ret; + + if (!commit) + continue; + + ret = wait_for_completion_timeout(&commit->done, 10 * HZ); + if (ret == 0) { + drm_err(display->drm, "global state timed out\n"); + return -ETIMEDOUT; + } + } return 0; } + +void +intel_atomic_global_state_commit_done(struct intel_atomic_state *state) +{ + const struct intel_global_state *new_obj_state; + struct intel_global_obj *obj; + int i; + + for_each_new_global_obj_in_state(state, obj, new_obj_state, i) { + struct intel_global_commit *commit = new_obj_state->commit; + + if (!new_obj_state->serialized) + continue; + + complete_all(&commit->done); + } +} |