Add some simple wrappers around incrementing/decrementing kthread_work.cancelling under lock, along with checking whether queuing is currently allowed on a given kthread_work, which we'll use want to implement work cancelling with DRM's vblank work helpers.

Cc: Daniel Vetter daniel@ffwll.ch Cc: Tejun Heo tj@kernel.org Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Signed-off-by: Lyude Paul lyude@redhat.com --- include/linux/kthread.h | 19 +++++++++++++++++ kernel/kthread.c | 46 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+)

diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 0006540ce7f9..c6fee200fced 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -211,9 +211,28 @@ void kthread_flush_worker(struct kthread_worker *worker);

bool kthread_cancel_work_sync(struct kthread_work *work); bool kthread_cancel_delayed_work_sync(struct kthread_delayed_work *work); +void kthread_block_work_queuing(struct kthread_worker *worker, + struct kthread_work *work); +void kthread_unblock_work_queuing(struct kthread_worker *worker, + struct kthread_work *work);

void kthread_destroy_worker(struct kthread_worker *worker);

+/** + * kthread_work_queuable - whether or not a kthread work can be queued + * @work: The kthread work to check + * + * Checks whether or not queuing @work is currently blocked from queuing, + * either by kthread_cancel_work_sync() and friends or + * kthread_block_work_queuing(). + * + * Returns: whether or not the @work may be queued. + */ +static inline bool kthread_work_queuable(struct kthread_work *work) +{ + return READ_ONCE(work->canceling) == 0; +} + struct cgroup_subsys_state;

#ifdef CONFIG_BLK_CGROUP diff --git a/kernel/kthread.c b/kernel/kthread.c index c1f8ec9d5836..f8a5c5a87cc6 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -1187,6 +1187,52 @@ bool kthread_cancel_delayed_work_sync(struct kthread_delayed_work *dwork) } EXPORT_SYMBOL_GPL(kthread_cancel_delayed_work_sync);

+/** + * kthread_block_work_queuing - prevent a kthread_work from being queued + * without actually cancelling it + * @worker: kthread worker to use + * @work: work to block queuing on + * + * Prevents @work from being queued using kthread_queue_work() and friends, + * but doesn't attempt to cancel any previous queuing. The caller must unblock + * queuing later by calling kthread_unblock_work_queuing(). This call can be + * called multiple times. + * + * See also: kthread_work_queuable() + */ +void kthread_block_work_queuing(struct kthread_worker *worker, + struct kthread_work *work) +{ + unsigned long flags; + + raw_spin_lock_irqsave(&worker->lock, flags); + work->canceling++; + raw_spin_unlock_irqrestore(&worker->lock, flags); +} +EXPORT_SYMBOL_GPL(kthread_block_work_queuing); + +/** + * kthread_unblock_work_queuing - unblock queuing on a kthread_work + * @worker: kthread worker to use + * @work: work to unblock queuing on + * + * Removes a request to prevent @work from being queued with + * kthread_queue_work() and friends, so that it may potentially be queued + * again. + * + * See also: kthread_work_queuable() + */ +void kthread_unblock_work_queuing(struct kthread_worker *worker, + struct kthread_work *work) +{ + unsigned long flags; + + raw_spin_lock_irqsave(&worker->lock, flags); + WARN_ON_ONCE(--work->canceling < 0); + raw_spin_unlock_irqrestore(&worker->lock, flags); +} +EXPORT_SYMBOL_GPL(kthread_unblock_work_queuing); + /** * kthread_flush_worker - flush all current works on a kthread_worker * @worker: worker to flush

Since we'll be allocating resources for kthread_create_worker() in the next commit (which could fail and require us to clean up the mess), let's simplify the cleanup process a bit by registering a drm_vblank_init_release() action for each drm_vblank_crtc so they're still cleaned up if we fail to initialize one of them.

Changes since v3: * Use drmm_add_action_or_reset() - Daniel Vetter

Cc: Daniel Vetter daniel@ffwll.ch Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Signed-off-by: Lyude Paul lyude@redhat.com --- drivers/gpu/drm/drm_vblank.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c index 758bf74e1cab..a4a9013584e2 100644 --- a/drivers/gpu/drm/drm_vblank.c +++ b/drivers/gpu/drm/drm_vblank.c @@ -491,16 +491,12 @@ static void vblank_disable_fn(struct timer_list *t)

static void drm_vblank_init_release(struct drm_device *dev, void *ptr) { - unsigned int pipe; - - for (pipe = 0; pipe < dev->num_crtcs; pipe++) { - struct drm_vblank_crtc *vblank = &dev->vblank[pipe]; + struct drm_vblank_crtc *vblank = ptr;

- WARN_ON(READ_ONCE(vblank->enabled) && - drm_core_check_feature(dev, DRIVER_MODESET)); + WARN_ON(READ_ONCE(vblank->enabled) && + drm_core_check_feature(dev, DRIVER_MODESET));

- del_timer_sync(&vblank->disable_timer); - } + del_timer_sync(&vblank->disable_timer); }

/** @@ -510,7 +506,7 @@ static void drm_vblank_init_release(struct drm_device *dev, void *ptr) * * This function initializes vblank support for @num_crtcs display pipelines. * Cleanup is handled automatically through a cleanup function added with - * drmm_add_action(). + * drmm_add_action_or_reset(). * * Returns: * Zero on success or a negative error code on failure. @@ -529,10 +525,6 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs)

dev->num_crtcs = num_crtcs;

- ret = drmm_add_action(dev, drm_vblank_init_release, NULL); - if (ret) - return ret; - for (i = 0; i < num_crtcs; i++) { struct drm_vblank_crtc *vblank = &dev->vblank[i];

@@ -541,6 +533,11 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs) init_waitqueue_head(&vblank->queue); timer_setup(&vblank->disable_timer, vblank_disable_fn, 0); seqlock_init(&vblank->seqlock); + + ret = drmm_add_action_or_reset(dev, drm_vblank_init_release, + vblank); + if (ret) + return ret; }

DRM_INFO("Supports vblank timestamp caching Rev 2 (21.10.2013).\n");

Add some kind of vblank workers. The interface is similar to regular delayed works, and is mostly based off kthread_work. It allows for scheduling delayed works that execute once a particular vblank sequence has passed. It also allows for accurate flushing of scheduled vblank works - in that flushing waits for both the vblank sequence and job execution to complete, or for the work to get cancelled - whichever comes first.

Whatever hardware programming we do in the work must be fast (must at least complete during the vblank or scanout period, sometimes during the first few scanlines of the vblank). As such we use a high-priority per-CRTC thread to accomplish this.

[based off patches from Ville Syrjälä ville.syrjala@linux.intel.com, change below to signoff later]

Changes since v3: * Use our own spinlocks, don't integrate so tightly with kthread_works Changes since v2: * Use kthread_workers instead of reinventing the wheel.

Cc: Daniel Vetter daniel@ffwll.ch Cc: Tejun Heo tj@kernel.org Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Signed-off-by: Lyude Paul lyude@redhat.com --- drivers/gpu/drm/drm_vblank.c | 259 +++++++++++++++++++++++++++++++++++ include/drm/drm_vblank.h | 35 +++++ 2 files changed, 294 insertions(+)

diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c index a4a9013584e2..5b10277553e4 100644 --- a/drivers/gpu/drm/drm_vblank.c +++ b/drivers/gpu/drm/drm_vblank.c @@ -25,7 +25,9 @@ */

#include <linux/export.h> +#include <linux/kthread.h> #include <linux/moduleparam.h> +#include <uapi/linux/sched/types.h>

#include <drm/drm_crtc.h> #include <drm/drm_drv.h> @@ -155,6 +157,7 @@ static bool drm_get_last_vbltimestamp(struct drm_device *dev, unsigned int pipe, ktime_t *tvblank, bool in_vblank_irq); +static int drm_vblank_get(struct drm_device *dev, unsigned int pipe);

static unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */

@@ -496,9 +499,46 @@ static void drm_vblank_init_release(struct drm_device *dev, void *ptr) WARN_ON(READ_ONCE(vblank->enabled) && drm_core_check_feature(dev, DRIVER_MODESET));

+ if (vblank->worker && !IS_ERR(vblank->worker)) + kthread_destroy_worker(vblank->worker); del_timer_sync(&vblank->disable_timer); }

+/** + * drm_vblank_work_init - initialize a vblank work item + * @work: vblank work item + * @crtc: CRTC whose vblank will trigger the work execution + * @func: work function to be executed + * + * Initialize a vblank work item for a specific crtc. + */ +void drm_vblank_work_init(struct drm_vblank_work *work, struct drm_crtc *crtc, + void (*func)(struct kthread_work *work)) +{ + kthread_init_work(&work->base, func); + INIT_LIST_HEAD(&work->flush_work); + INIT_LIST_HEAD(&work->pending); + work->vblank = &crtc->dev->vblank[drm_crtc_index(crtc)]; +} +EXPORT_SYMBOL(drm_vblank_work_init); + +static int vblank_worker_init(struct drm_vblank_crtc *vblank) +{ + struct sched_param param = { + .sched_priority = MAX_RT_PRIO - 1, + }; + + INIT_LIST_HEAD(&vblank->pending_work); + spin_lock_init(&vblank->work_lock); + vblank->worker = kthread_create_worker(0, "card%d-crtc%d", + vblank->dev->primary->index, + vblank->pipe); + if (IS_ERR(vblank->worker)) + return PTR_ERR(vblank->worker); + + return sched_setscheduler(vblank->worker->task, SCHED_FIFO, &param); +} + /** * drm_vblank_init - initialize vblank support * @dev: DRM device @@ -538,6 +578,10 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs) vblank); if (ret) return ret; + + ret = vblank_worker_init(vblank); + if (ret) + return ret; }

DRM_INFO("Supports vblank timestamp caching Rev 2 (21.10.2013).\n"); @@ -1878,6 +1922,45 @@ static void drm_handle_vblank_events(struct drm_device *dev, unsigned int pipe) trace_drm_vblank_event(pipe, seq, now, high_prec); }

+static void queue_vbl_work(struct drm_vblank_work *work) +{ + struct kthread_flush_work *fwork, *tmp; + bool busy, reinit = false; + + busy = kthread_queue_work(work->vblank->worker, &work->base); + list_for_each_entry_safe(fwork, tmp, &work->flush_work, work.node) { + if (busy) { + list_del_init(&fwork->work.node); + busy = kthread_queue_flush_work(&work->base, fwork); + if (!busy) + complete(&fwork->done); + } else { + complete(&fwork->done); + reinit = true; + } + } + + if (reinit) + INIT_LIST_HEAD(&work->flush_work); +} + +static void drm_handle_vblank_works(struct drm_vblank_crtc *vblank) +{ + struct drm_vblank_work *work, *next; + u64 count = atomic64_read(&vblank->count); + + spin_lock(&vblank->work_lock); + list_for_each_entry_safe(work, next, &vblank->pending_work, pending) { + if (!vblank_passed(count, work->count)) + continue; + + list_del_init(&work->pending); + drm_vblank_put(vblank->dev, vblank->pipe); + queue_vbl_work(work); + } + spin_unlock(&vblank->work_lock); +} + /** * drm_handle_vblank - handle a vblank event * @dev: DRM device @@ -1919,6 +2002,7 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)

spin_unlock(&dev->vblank_time_lock);

+ drm_handle_vblank_works(vblank); wake_up(&vblank->queue);

/* With instant-off, we defer disabling the interrupt until after @@ -2129,3 +2213,178 @@ int drm_crtc_queue_sequence_ioctl(struct drm_device *dev, void *data, kfree(e); return ret; } + +/** + * drm_vblank_work_schedule - schedule a vblank work + * @work: vblank work to schedule + * @count: target vblank count + * @nextonmiss: defer until the next vblank if target vblank was missed + * + * Schedule @work for execution once the crtc vblank count reaches @count. + * + * If the crtc vblank count has already reached @count and @nextonmiss is + * %false the work starts to execute immediately. + * + * If the crtc vblank count has already reached @count and @nextonmiss is + * %true the work is deferred until the next vblank (as if @count has been + * specified as crtc vblank count + 1). + * + * If @work is already scheduled, this function will reschedule said work + * using the new @count. + * + * Returns: + * 0 on success, error code on failure. + */ +int drm_vblank_work_schedule(struct drm_vblank_work *work, + u64 count, bool nextonmiss) +{ + struct drm_vblank_crtc *vblank = work->vblank; + struct drm_device *dev = vblank->dev; + u64 cur_vbl; + unsigned long irqflags; + bool passed, rescheduling = false; + int ret = 0; + + spin_lock_irqsave(&vblank->work_lock, irqflags); + if (!kthread_work_queuable(&work->base)) + goto out; + + if (list_empty(&work->pending)) { + ret = drm_vblank_get(dev, vblank->pipe); + if (ret < 0) + goto out; + } else if (work->count == count) { + /* Already scheduled w/ same vbl count */ + goto out; + } else { + rescheduling = true; + } + + work->count = count; + cur_vbl = drm_vblank_count(dev, vblank->pipe); + passed = vblank_passed(cur_vbl, count); + if (passed) + DRM_ERROR("crtc %d vblank %llu already passed (current %llu)\n", + vblank->pipe, count, cur_vbl); + + if (!nextonmiss && passed) { + drm_vblank_put(dev, vblank->pipe); + if (rescheduling) + list_del_init(&work->pending); + queue_vbl_work(work); + } else if (rescheduling) { + list_move_tail(&work->pending, &vblank->pending_work); + } else { + list_add_tail(&work->pending, &vblank->pending_work); + } + + out: + spin_unlock_irqrestore(&vblank->work_lock, irqflags); + return ret; +} +EXPORT_SYMBOL(drm_vblank_work_schedule); + +static bool vblank_work_cancel(struct drm_vblank_work *work) +{ + struct kthread_flush_work *pos, *tmp; + + if (list_empty(&work->pending)) + return false; + + list_for_each_entry_safe(pos, tmp, &work->flush_work, work.node) + complete(&pos->done); + + list_del_init(&work->pending); + INIT_LIST_HEAD(&work->flush_work); + return true; +} + +/** + * drm_vblank_work_cancel - cancel a vblank work + * @work: vblank work to cancel + * + * Cancel an already scheduled vblank work. + * + * On return @work may still be executing, unless the return + * value is %true. + * + * Returns: + * True if the work was cancelled before it started to excute, false otherwise. + */ +bool drm_vblank_work_cancel(struct drm_vblank_work *work) +{ + struct drm_vblank_crtc *vblank = work->vblank; + bool cancelled; + + spin_lock_irq(&vblank->work_lock); + cancelled = vblank_work_cancel(work); + spin_unlock_irq(&vblank->work_lock); + if (cancelled) + drm_vblank_put(vblank->dev, vblank->pipe); + + return cancelled; +} +EXPORT_SYMBOL(drm_vblank_work_cancel); + +/** + * drm_vblank_work_cancel_sync - cancel a vblank work and wait for it to + * finish executing + * @work: vblank work to cancel + * + * Cancel an already scheduled vblank work and wait for its + * execution to finish. + * + * On return @work is no longer guaraneed to be executing. + * + * Returns: + * %True if the work was cancelled before it started to execute, %false + * otherwise. + */ +bool drm_vblank_work_cancel_sync(struct drm_vblank_work *work) +{ + struct drm_vblank_crtc *vblank = work->vblank; + bool vbl_put, cancelled; + + spin_lock_irq(&vblank->work_lock); + cancelled = vblank_work_cancel(work); + vbl_put = cancelled; + + kthread_block_work_queuing(vblank->worker, &work->base); + spin_unlock_irq(&vblank->work_lock); + + cancelled |= kthread_cancel_work_sync(&work->base); + if (vbl_put) + drm_vblank_put(vblank->dev, vblank->pipe); + + kthread_unblock_work_queuing(vblank->worker, &work->base); + + return cancelled; +} +EXPORT_SYMBOL(drm_vblank_work_cancel_sync); + +/** + * drm_vblank_work_flush - wait for a scheduled vblank work to finish + * executing + * @work: vblank work to flush + * + * Wait until @work has finished executing once. + */ +void drm_vblank_work_flush(struct drm_vblank_work *work) +{ + struct drm_vblank_crtc *vblank = work->vblank; + bool scheduled; + DEFINE_KTHREAD_FLUSH_WORK(fwork); + + spin_lock_irq(&vblank->work_lock); + + scheduled = !list_empty(&work->pending); + if (scheduled) + list_add_tail(&fwork.work.node, &work->flush_work); + else + scheduled = kthread_queue_flush_work(&work->base, &fwork); + + spin_unlock_irq(&vblank->work_lock); + if (scheduled) + wait_for_completion(&fwork.done); +} +EXPORT_SYMBOL(drm_vblank_work_flush); diff --git a/include/drm/drm_vblank.h b/include/drm/drm_vblank.h index dd9f5b9e56e4..020f48bc8473 100644 --- a/include/drm/drm_vblank.h +++ b/include/drm/drm_vblank.h @@ -27,6 +27,7 @@ #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> @@ -203,8 +204,42 @@ struct drm_vblank_crtc { * disabling functions multiple times. */ bool enabled; + + /** + * @worker: The &kthread_worker used for executing vblank works. + */ + struct kthread_worker *worker; + /** + * @work_lock: The spinlock that protects @pending_work + */ + spinlock_t work_lock; + /** + * @pending_work: A list of scheduled &drm_vblank_work that are + * waiting for a future vblank. + */ + struct list_head pending_work; +}; + +struct drm_vblank_work { + struct kthread_work base; + struct drm_vblank_crtc *vblank; + u64 count; + + struct list_head pending; + struct list_head flush_work; };

+#define to_drm_vblank_work(_work) \ + container_of((_work), struct drm_vblank_work, base) + +int drm_vblank_work_schedule(struct drm_vblank_work *work, + u64 count, bool nextonmiss); +void drm_vblank_work_init(struct drm_vblank_work *work, struct drm_crtc *crtc, + void (*func)(struct kthread_work *work)); +bool drm_vblank_work_cancel(struct drm_vblank_work *work); +bool drm_vblank_work_cancel_sync(struct drm_vblank_work *work); +void drm_vblank_work_flush(struct drm_vblank_work *work); + 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);

Currently, we modify the depth value stored in the atomic state when performing a commit in order to workaround the fact we haven't implemented support for depths higher then 10 yet. This isn't idempotent though, as it will happen every atomic commit where we modify the OR state even if the head's depth in the atomic state hasn't been modified.

Normally this wouldn't matter, since we don't modify OR state outside of modesets, but since the CRC capture region is implemented as part of the OR state in hardware we'll want to make sure all commits modifying OR state are idempotent so as to avoid changing the depth unexpectedly.

So, fix this by simply not writing the reduced depth value we come up with to the atomic state.

Signed-off-by: Lyude Paul lyude@redhat.com --- drivers/gpu/drm/nouveau/dispnv50/headc37d.c | 11 +++++++---- drivers/gpu/drm/nouveau/dispnv50/headc57d.c | 11 +++++++---- 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc37d.c b/drivers/gpu/drm/nouveau/dispnv50/headc37d.c index 00011ce109a6..68920f8d9c79 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/headc37d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/headc37d.c @@ -27,17 +27,20 @@ static void headc37d_or(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; + u8 depth; u32 *push; + if ((push = evo_wait(core, 2))) { /*XXX: This is a dirty hack until OR depth handling is * improved later for deep colour etc. */ switch (asyh->or.depth) { - case 6: asyh->or.depth = 5; break; - case 5: asyh->or.depth = 4; break; - case 2: asyh->or.depth = 1; break; - case 0: asyh->or.depth = 4; break; + case 6: depth = 5; break; + case 5: depth = 4; break; + case 2: depth = 1; break; + case 0: depth = 4; break; default: + depth = asyh->or.depth; WARN_ON(1); break; } diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c index 938d910a1b1e..0296cd1d761f 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c @@ -27,17 +27,20 @@ static void headc57d_or(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; + u8 depth; u32 *push; + if ((push = evo_wait(core, 2))) { /*XXX: This is a dirty hack until OR depth handling is * improved later for deep colour etc. */ switch (asyh->or.depth) { - case 6: asyh->or.depth = 5; break; - case 5: asyh->or.depth = 4; break; - case 2: asyh->or.depth = 1; break; - case 0: asyh->or.depth = 4; break; + case 6: depth = 5; break; + case 5: depth = 4; break; + case 2: depth = 1; break; + case 0: depth = 4; break; default: + depth = asyh->or.depth; WARN_ON(1); break; }

We refer to the armed hardware assembly as armh elsewhere in nouveau, so fix the naming here to make it consistent.

This patch contains no functional changes.

Signed-off-by: Lyude Paul lyude@redhat.com --- drivers/gpu/drm/nouveau/dispnv50/wndw.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndw.c b/drivers/gpu/drm/nouveau/dispnv50/wndw.c index bb737f9281e6..39cca8eaa066 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c @@ -397,7 +397,7 @@ nv50_wndw_atomic_check(struct drm_plane *plane, struct drm_plane_state *state) struct nv50_wndw *wndw = nv50_wndw(plane); struct nv50_wndw_atom *armw = nv50_wndw_atom(wndw->plane.state); struct nv50_wndw_atom *asyw = nv50_wndw_atom(state); - struct nv50_head_atom *harm = NULL, *asyh = NULL; + struct nv50_head_atom *armh = NULL, *asyh = NULL; bool modeset = false; int ret;

@@ -418,9 +418,9 @@ nv50_wndw_atomic_check(struct drm_plane *plane, struct drm_plane_state *state)

/* Fetch assembly state for the head the window used to belong to. */ if (armw->state.crtc) { - harm = nv50_head_atom_get(asyw->state.state, armw->state.crtc); - if (IS_ERR(harm)) - return PTR_ERR(harm); + armh = nv50_head_atom_get(asyw->state.state, armw->state.crtc); + if (IS_ERR(armh)) + return PTR_ERR(armh); }

/* LUT configuration can potentially cause the window to be disabled. */ @@ -444,8 +444,8 @@ nv50_wndw_atomic_check(struct drm_plane *plane, struct drm_plane_state *state) asyh->wndw.mask |= BIT(wndw->id); } else if (armw->visible) { - nv50_wndw_atomic_check_release(wndw, asyw, harm); - harm->wndw.mask &= ~BIT(wndw->id); + nv50_wndw_atomic_check_release(wndw, asyw, armh); + armh->wndw.mask &= ~BIT(wndw->id); } else { return 0; }

In order to make sure that we flush disable updates at the right time when disabling CRCs, we'll need to be able to look at the outp state to see if we're changing it at the same time that we're disabling CRCs.

So, expose the struct in disp.h.

Signed-off-by: Lyude Paul lyude@redhat.com --- drivers/gpu/drm/nouveau/dispnv50/disp.c | 18 ------------------ drivers/gpu/drm/nouveau/dispnv50/disp.h | 14 ++++++++++++++ 2 files changed, 14 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 5be036b3b533..5d5661967d50 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -57,24 +57,6 @@

#include <subdev/bios/dp.h>

-/****************************************************************************** - * Atomic state - *****************************************************************************/ - -struct nv50_outp_atom { - struct list_head head; - - struct drm_encoder *encoder; - bool flush_disable; - - union nv50_outp_atom_mask { - struct { - bool ctrl:1; - }; - u8 mask; - } set, clr; -}; - /****************************************************************************** * EVO channel *****************************************************************************/ diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.h b/drivers/gpu/drm/nouveau/dispnv50/disp.h index d54fe00ac3a3..8935ebce8ab0 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.h +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.h @@ -70,6 +70,20 @@ struct nv50_dmac { struct mutex lock; };

+struct nv50_outp_atom { + struct list_head head; + + struct drm_encoder *encoder; + bool flush_disable; + + union nv50_outp_atom_mask { + struct { + bool ctrl:1; + }; + u8 mask; + } set, clr; +}; + int nv50_dmac_create(struct nvif_device *device, struct nvif_object *disp, const s32 *oclass, u8 head, void *data, u32 size, u64 syncbuf, struct nv50_dmac *dmac);

This introduces support for CRC readback on gf119+, using the documentation generously provided to us by Nvidia:

https://github.com/NVIDIA/open-gpu-doc/blob/master/Display-CRC/display-crc.t...

We expose all available CRC sources. SF, SOR, PIOR, and DAC are exposed through a single set of "outp" sources: outp-active/auto for a CRC of the scanout region, outp-complete for a CRC of both the scanout and blanking/sync region combined, and outp-inactive for a CRC of only the blanking/sync region. For each source, nouveau selects the appropriate tap point based on the output path in use. We also expose an "rg" source, which allows for capturing CRCs of the scanout raster before it's encoded into a video signal in the output path. This tap point is referred to as the raster generator.

Note that while there's some other neat features that can be used with CRC capture on nvidia hardware, like capturing from two CRC sources simultaneously, I couldn't see any usecase for them and did not implement them.

Nvidia only allows for accessing CRCs through a shared DMA region that we program through the core EVO/NvDisplay channel which is referred to as the notifier context. The notifier context is limited to either 255 (for Fermi-Pascal) or 2047 (Volta+) entries to store CRCs in, and unfortunately the hardware simply drops CRCs and reports an overflow once all available entries in the notifier context are filled.

Since the DRM CRC API and igt-gpu-tools don't expect there to be a limit on how many CRCs can be captured, we work around this in nouveau by allocating two separate notifier contexts for each head instead of one. We schedule a vblank worker ahead of time so that once we start getting close to filling up all of the available entries in the notifier context, we can swap the currently used notifier context out with another pre-prepared notifier context in a manner similar to page flipping.

Unfortunately, the hardware only allows us to this by flushing two separate updates on the core channel: one to release the current notifier context handle, and one to program the next notifier context's handle. When the hardware processes the first update, the CRC for the current frame is lost. However, the second update can be flushed immediately without waiting for the first to complete so that CRC generation resumes on the next frame. According to Nvidia's hardware engineers, there isn't any cleaner way of flipping notifier contexts that would avoid this.

Since using vblank workers to swap out the notifier context will ensure we can usually flush both updates to hardware within the timespan of a single frame, we can also ensure that there will only be exactly one frame lost between the first and second update being executed by the hardware. This gives us the guarantee that we're always correctly matching each CRC entry with it's respective frame even after a context flip. And since IGT will retrieve the CRC entry for a frame by waiting until it receives a CRC for any subsequent frames, this doesn't cause an issue with any tests and is much simpler than trying to change the current DRM API to accommodate.

In order to facilitate testing of correct handling of this limitation, we also expose a debugfs interface to manually control the threshold for when we start trying to flip the notifier context. We will use this in igt to trigger a context flip for testing purposes without needing to wait for the notifier to completely fill up. This threshold is reset to the default value set by nouveau after each capture, and is exposed in a separate folder within each CRTC's debugfs directory labelled "nv_crc".

Changes since v1: * Forgot to finish saving crc.h before saving, whoops. This just adds some corrections to the empty function declarations that we use if CONFIG_DEBUG_FS isn't enabled. Changes since v2: * Don't check return code from debugfs_create_dir() or debugfs_create_file() - Greg K-H Changes since v3: (no functional changes) * Fix SPDX license identifiers (checkpatch) * s/uint32_t/u32/ (checkpatch) * Fix indenting in switch cases (checkpatch)

Signed-off-by: Lyude Paul lyude@redhat.com --- drivers/gpu/drm/nouveau/dispnv04/crtc.c | 25 +- drivers/gpu/drm/nouveau/dispnv50/Kbuild | 4 + drivers/gpu/drm/nouveau/dispnv50/atom.h | 20 + drivers/gpu/drm/nouveau/dispnv50/core.h | 4 + drivers/gpu/drm/nouveau/dispnv50/core907d.c | 3 + drivers/gpu/drm/nouveau/dispnv50/core917d.c | 3 + drivers/gpu/drm/nouveau/dispnv50/corec37d.c | 3 + drivers/gpu/drm/nouveau/dispnv50/corec57d.c | 3 + drivers/gpu/drm/nouveau/dispnv50/crc.c | 715 ++++++++++++++++++++ drivers/gpu/drm/nouveau/dispnv50/crc.h | 125 ++++ drivers/gpu/drm/nouveau/dispnv50/crc907d.c | 139 ++++ drivers/gpu/drm/nouveau/dispnv50/crcc37d.c | 153 +++++ drivers/gpu/drm/nouveau/dispnv50/disp.c | 24 +- drivers/gpu/drm/nouveau/dispnv50/disp.h | 10 + drivers/gpu/drm/nouveau/dispnv50/handles.h | 1 + drivers/gpu/drm/nouveau/dispnv50/head.c | 85 ++- drivers/gpu/drm/nouveau/dispnv50/head.h | 11 +- drivers/gpu/drm/nouveau/dispnv50/head907d.c | 14 +- drivers/gpu/drm/nouveau/dispnv50/headc37d.c | 6 +- drivers/gpu/drm/nouveau/dispnv50/headc57d.c | 7 +- drivers/gpu/drm/nouveau/nouveau_display.c | 60 +- 21 files changed, 1341 insertions(+), 74 deletions(-) create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crc.c create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crc.h create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crc907d.c create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crcc37d.c

diff --git a/drivers/gpu/drm/nouveau/dispnv04/crtc.c b/drivers/gpu/drm/nouveau/dispnv04/crtc.c index 1f08de4241e0..fc178ffce8cd 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/crtc.c +++ b/drivers/gpu/drm/nouveau/dispnv04/crtc.c @@ -44,6 +44,9 @@ #include <subdev/bios/pll.h> #include <subdev/clk.h>

+#include <nvif/event.h> +#include <nvif/cl0046.h> + static int nv04_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, struct drm_framebuffer *old_fb); @@ -755,6 +758,7 @@ static void nv_crtc_destroy(struct drm_crtc *crtc) nouveau_bo_unmap(nv_crtc->cursor.nvbo); nouveau_bo_unpin(nv_crtc->cursor.nvbo); nouveau_bo_ref(NULL, &nv_crtc->cursor.nvbo); + nvif_notify_fini(&nv_crtc->vblank); kfree(nv_crtc); }

@@ -1296,9 +1300,19 @@ create_primary_plane(struct drm_device *dev) return primary; }

+static int nv04_crtc_vblank_handler(struct nvif_notify *notify) +{ + struct nouveau_crtc *nv_crtc = + container_of(notify, struct nouveau_crtc, vblank); + + drm_crtc_handle_vblank(&nv_crtc->base); + return NVIF_NOTIFY_KEEP; +} + int nv04_crtc_create(struct drm_device *dev, int crtc_num) { + struct nouveau_display *disp = nouveau_display(dev); struct nouveau_crtc *nv_crtc; int ret;

@@ -1336,5 +1350,14 @@ nv04_crtc_create(struct drm_device *dev, int crtc_num)

nv04_cursor_init(nv_crtc);

- return 0; + ret = nvif_notify_init(&disp->disp.object, nv04_crtc_vblank_handler, + false, NV04_DISP_NTFY_VBLANK, + &(struct nvif_notify_head_req_v0) { + .head = nv_crtc->index, + }, + sizeof(struct nvif_notify_head_req_v0), + sizeof(struct nvif_notify_head_rep_v0), + &nv_crtc->vblank); + + return ret; } diff --git a/drivers/gpu/drm/nouveau/dispnv50/Kbuild b/drivers/gpu/drm/nouveau/dispnv50/Kbuild index e0c435eae664..6fdddb266fb1 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/Kbuild +++ b/drivers/gpu/drm/nouveau/dispnv50/Kbuild @@ -10,6 +10,10 @@ nouveau-y += dispnv50/core917d.o nouveau-y += dispnv50/corec37d.o nouveau-y += dispnv50/corec57d.o

+nouveau-$(CONFIG_DEBUG_FS) += dispnv50/crc.o +nouveau-$(CONFIG_DEBUG_FS) += dispnv50/crc907d.o +nouveau-$(CONFIG_DEBUG_FS) += dispnv50/crcc37d.o + nouveau-y += dispnv50/dac507d.o nouveau-y += dispnv50/dac907d.o

diff --git a/drivers/gpu/drm/nouveau/dispnv50/atom.h b/drivers/gpu/drm/nouveau/dispnv50/atom.h index 62faaf60f47a..3d82b3c67dec 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/atom.h +++ b/drivers/gpu/drm/nouveau/dispnv50/atom.h @@ -2,6 +2,9 @@ #define __NV50_KMS_ATOM_H__ #define nv50_atom(p) container_of((p), struct nv50_atom, state) #include <drm/drm_atomic.h> +#include "crc.h" + +struct nouveau_encoder;

struct nv50_atom { struct drm_atomic_state state; @@ -115,9 +118,12 @@ struct nv50_head_atom { u8 nhsync:1; u8 nvsync:1; u8 depth:4; + u8 crc_raster:2; u8 bpc; } or;

+ struct nv50_crc_atom crc; + /* Currently only used for MST */ struct { int pbn; @@ -135,6 +141,7 @@ struct nv50_head_atom { bool ovly:1; bool dither:1; bool procamp:1; + bool crc:1; bool or:1; }; u16 mask; @@ -150,6 +157,19 @@ nv50_head_atom_get(struct drm_atomic_state *state, struct drm_crtc *crtc) return nv50_head_atom(statec); }

+static inline struct drm_encoder * +nv50_head_atom_get_encoder(struct nv50_head_atom *atom) +{ + struct drm_encoder *encoder = NULL; + + /* We only ever have a single encoder */ + drm_for_each_encoder_mask(encoder, atom->state.crtc->dev, + atom->state.encoder_mask) + break; + + return encoder; +} + #define nv50_wndw_atom(p) container_of((p), struct nv50_wndw_atom, state)

struct nv50_wndw_atom { diff --git a/drivers/gpu/drm/nouveau/dispnv50/core.h b/drivers/gpu/drm/nouveau/dispnv50/core.h index ff94f3f6f264..47470db0f154 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/core.h +++ b/drivers/gpu/drm/nouveau/dispnv50/core.h @@ -2,6 +2,7 @@ #define __NV50_KMS_CORE_H__ #include "disp.h" #include "atom.h" +#include "crc.h"

struct nv50_core { const struct nv50_core_func *func; @@ -24,6 +25,9 @@ struct nv50_core_func { } wndw;

const struct nv50_head_func *head; +#if IS_ENABLED(CONFIG_DEBUG_FS) + const struct nv50_crc_func *crc; +#endif const struct nv50_outp_func { void (*ctrl)(struct nv50_core *, int or, u32 ctrl, struct nv50_head_atom *); diff --git a/drivers/gpu/drm/nouveau/dispnv50/core907d.c b/drivers/gpu/drm/nouveau/dispnv50/core907d.c index ef822f813435..fd6aaf629d02 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/core907d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/core907d.c @@ -29,6 +29,9 @@ core907d = { .ntfy_wait_done = core507d_ntfy_wait_done, .update = core507d_update, .head = &head907d, +#if IS_ENABLED(CONFIG_DEBUG_FS) + .crc = &crc907d, +#endif .dac = &dac907d, .sor = &sor907d, }; diff --git a/drivers/gpu/drm/nouveau/dispnv50/core917d.c b/drivers/gpu/drm/nouveau/dispnv50/core917d.c index 392338df5bfd..46debdce87ff 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/core917d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/core917d.c @@ -29,6 +29,9 @@ core917d = { .ntfy_wait_done = core507d_ntfy_wait_done, .update = core507d_update, .head = &head917d, +#if IS_ENABLED(CONFIG_DEBUG_FS) + .crc = &crc907d, +#endif .dac = &dac907d, .sor = &sor907d, }; diff --git a/drivers/gpu/drm/nouveau/dispnv50/corec37d.c b/drivers/gpu/drm/nouveau/dispnv50/corec37d.c index c03cb987856b..b9093a475bdb 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/corec37d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/corec37d.c @@ -116,6 +116,9 @@ corec37d = { .wndw.owner = corec37d_wndw_owner, .head = &headc37d, .sor = &sorc37d, +#if IS_ENABLED(CONFIG_DEBUG_FS) + .crc = &crcc37d, +#endif };

int diff --git a/drivers/gpu/drm/nouveau/dispnv50/corec57d.c b/drivers/gpu/drm/nouveau/dispnv50/corec57d.c index 147adcd60937..0ffd6286985c 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/corec57d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/corec57d.c @@ -51,6 +51,9 @@ corec57d = { .wndw.owner = corec37d_wndw_owner, .head = &headc57d, .sor = &sorc37d, +#if IS_ENABLED(CONFIG_DEBUG_FS) + .crc = &crcc37d, +#endif };

int diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c b/drivers/gpu/drm/nouveau/dispnv50/crc.c new file mode 100644 index 000000000000..e8fbed129917 --- /dev/null +++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c @@ -0,0 +1,715 @@ +// SPDX-License-Identifier: MIT +#include <linux/string.h> +#include <drm/drm_crtc.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_vblank.h> + +#include <nvif/class.h> +#include <nvif/cl0002.h> +#include <nvif/timer.h> + +#include "nouveau_drv.h" +#include "core.h" +#include "head.h" +#include "wndw.h" +#include "handles.h" +#include "crc.h" + +static const char * const nv50_crc_sources[] = { + [NV50_CRC_SOURCE_NONE] = "none", + [NV50_CRC_SOURCE_AUTO] = "auto", + [NV50_CRC_SOURCE_RG] = "rg", + [NV50_CRC_SOURCE_OUTP_ACTIVE] = "outp-active", + [NV50_CRC_SOURCE_OUTP_COMPLETE] = "outp-complete", + [NV50_CRC_SOURCE_OUTP_INACTIVE] = "outp-inactive", +}; + +static int nv50_crc_parse_source(const char *buf, enum nv50_crc_source *s) +{ + int i; + + if (!buf) { + *s = NV50_CRC_SOURCE_NONE; + return 0; + } + + i = match_string(nv50_crc_sources, ARRAY_SIZE(nv50_crc_sources), buf); + if (i < 0) + return i; + + *s = i; + return 0; +} + +int +nv50_crc_verify_source(struct drm_crtc *crtc, const char *source_name, + size_t *values_cnt) +{ + struct nouveau_drm *drm = nouveau_drm(crtc->dev); + enum nv50_crc_source source; + + if (nv50_crc_parse_source(source_name, &source) < 0) { + NV_DEBUG(drm, "unknown source %s\n", source_name); + return -EINVAL; + } + + *values_cnt = 1; + return 0; +} + +const char *const *nv50_crc_get_sources(struct drm_crtc *crtc, size_t *count) +{ + *count = ARRAY_SIZE(nv50_crc_sources); + return nv50_crc_sources; +} + +static void +nv50_crc_program_ctx(struct nv50_head *head, + struct nv50_crc_notifier_ctx *ctx) +{ + struct nv50_disp *disp = nv50_disp(head->base.base.dev); + struct nv50_core *core = disp->core; + u32 interlock[NV50_DISP_INTERLOCK__SIZE] = { 0 }; + + core->func->crc->set_ctx(head, ctx); + core->func->update(core, interlock, false); +} + +static void nv50_crc_ctx_flip_work(struct kthread_work *kwork) +{ + struct drm_vblank_work *work = to_drm_vblank_work(kwork); + struct nv50_crc *crc = container_of(work, struct nv50_crc, flip_work); + struct nv50_head *head = container_of(crc, struct nv50_head, crc); + struct drm_crtc *crtc = &head->base.base; + struct nv50_disp *disp = nv50_disp(crtc->dev); + u8 new_idx = crc->ctx_idx ^ 1; + + /* + * We don't want to accidentally wait for longer then the vblank, so + * try again for the next vblank if we don't grab the lock + */ + if (!mutex_trylock(&disp->mutex)) { + DRM_DEV_DEBUG_KMS(crtc->dev->dev, + "Lock contended, delaying CRC ctx flip for head-%d\n", + head->base.index); + drm_vblank_work_schedule(work, + drm_crtc_vblank_count(crtc) + 1, + true); + return; + } + + DRM_DEV_DEBUG_KMS(crtc->dev->dev, + "Flipping notifier ctx for head %d (%d -> %d)\n", + drm_crtc_index(crtc), crc->ctx_idx, new_idx); + + nv50_crc_program_ctx(head, NULL); + nv50_crc_program_ctx(head, &crc->ctx[new_idx]); + mutex_unlock(&disp->mutex); + + spin_lock_irq(&crc->lock); + crc->ctx_changed = true; + spin_unlock_irq(&crc->lock); +} + +static inline void nv50_crc_reset_ctx(struct nv50_crc_notifier_ctx *ctx) +{ + memset_io(ctx->mem.object.map.ptr, 0, ctx->mem.object.map.size); +} + +static void +nv50_crc_get_entries(struct nv50_head *head, + const struct nv50_crc_func *func, + enum nv50_crc_source source) +{ + struct drm_crtc *crtc = &head->base.base; + struct nv50_crc *crc = &head->crc; + u32 output_crc; + + while (crc->entry_idx < func->num_entries) { + /* + * While Nvidia's documentation says CRCs are written on each + * subsequent vblank after being enabled, in practice they + * aren't written immediately. + */ + output_crc = func->get_entry(head, &crc->ctx[crc->ctx_idx], + source, crc->entry_idx); + if (!output_crc) + return; + + drm_crtc_add_crc_entry(crtc, true, crc->frame, &output_crc); + crc->frame++; + crc->entry_idx++; + } +} + +void nv50_crc_handle_vblank(struct nv50_head *head) +{ + struct drm_crtc *crtc = &head->base.base; + struct nv50_crc *crc = &head->crc; + const struct nv50_crc_func *func = + nv50_disp(head->base.base.dev)->core->func->crc; + struct nv50_crc_notifier_ctx *ctx; + bool need_reschedule = false; + + if (!func) + return; + + /* + * We don't lose events if we aren't able to report CRCs until the + * next vblank, so only report CRCs if the locks we need aren't + * contended to prevent missing an actual vblank event + */ + if (!spin_trylock(&crc->lock)) + return; + + if (!crc->src) + goto out; + + ctx = &crc->ctx[crc->ctx_idx]; + if (crc->ctx_changed && func->ctx_finished(head, ctx)) { + nv50_crc_get_entries(head, func, crc->src); + + crc->ctx_idx ^= 1; + crc->entry_idx = 0; + crc->ctx_changed = false; + + /* + * Unfortunately when notifier contexts are changed during CRC + * capture, we will inevitably lose the CRC entry for the + * frame where the hardware actually latched onto the first + * UPDATE. According to Nvidia's hardware engineers, there's + * no workaround for this. + * + * Now, we could try to be smart here and calculate the number + * of missed CRCs based on audit timestamps, but those were + * removed starting with volta. Since we always flush our + * updates back-to-back without waiting, we'll just be + * optimistic and assume we always miss exactly one frame. + */ + DRM_DEV_DEBUG_KMS(head->base.base.dev->dev, + "Notifier ctx flip for head-%d finished, lost CRC for frame %llu\n", + head->base.index, crc->frame); + crc->frame++; + + nv50_crc_reset_ctx(ctx); + need_reschedule = true; + } + + nv50_crc_get_entries(head, func, crc->src); + + if (need_reschedule) + drm_vblank_work_schedule(&crc->flip_work, + drm_crtc_vblank_count(crtc) + + crc->flip_threshold + - crc->entry_idx, + true); + +out: + spin_unlock(&crc->lock); +} + +static void nv50_crc_wait_ctx_finished(struct nv50_head *head, + const struct nv50_crc_func *func, + struct nv50_crc_notifier_ctx *ctx) +{ + struct drm_device *dev = head->base.base.dev; + struct nouveau_drm *drm = nouveau_drm(dev); + s64 ret; + + ret = nvif_msec(&drm->client.device, 50, + if (func->ctx_finished(head, ctx)) break;); + if (ret == -ETIMEDOUT) + NV_ERROR(drm, + "CRC notifier ctx for head %d not finished after 50ms\n", + head->base.index); + else if (ret) + NV_ATOMIC(drm, + "CRC notifier ctx for head-%d finished after %lldns\n", + head->base.index, ret); +} + +void nv50_crc_atomic_stop_reporting(struct drm_atomic_state *state) +{ + struct drm_crtc_state *crtc_state; + struct drm_crtc *crtc; + int i; + + for_each_new_crtc_in_state(state, crtc, crtc_state, i) { + struct nv50_head *head = nv50_head(crtc); + struct nv50_head_atom *asyh = nv50_head_atom(crtc_state); + struct nv50_crc *crc = &head->crc; + + if (!asyh->clr.crc) + continue; + + spin_lock_irq(&crc->lock); + crc->src = NV50_CRC_SOURCE_NONE; + spin_unlock_irq(&crc->lock); + + drm_crtc_vblank_put(crtc); + drm_vblank_work_cancel_sync(&crc->flip_work); + + NV_ATOMIC(nouveau_drm(crtc->dev), + "CRC reporting on vblank for head-%d disabled\n", + head->base.index); + + /* CRC generation is still enabled in hw, we'll just report + * any remaining CRC entries ourselves after it gets disabled + * in hardware + */ + } +} + +void nv50_crc_atomic_prepare_notifier_contexts(struct drm_atomic_state *state) +{ + const struct nv50_crc_func *func = + nv50_disp(state->dev)->core->func->crc; + struct drm_crtc_state *new_crtc_state; + struct drm_crtc *crtc; + int i; + + for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { + struct nv50_head *head = nv50_head(crtc); + struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state); + struct nv50_crc *crc = &head->crc; + struct nv50_crc_notifier_ctx *ctx = &crc->ctx[crc->ctx_idx]; + int i; + + if (asyh->clr.crc && asyh->crc.src) { + if (crc->ctx_changed) { + nv50_crc_wait_ctx_finished(head, func, ctx); + ctx = &crc->ctx[crc->ctx_idx ^ 1]; + } + nv50_crc_wait_ctx_finished(head, func, ctx); + } + + if (asyh->set.crc) { + crc->entry_idx = 0; + crc->ctx_changed = false; + for (i = 0; i < ARRAY_SIZE(crc->ctx); i++) + nv50_crc_reset_ctx(&crc->ctx[i]); + } + } +} + +void nv50_crc_atomic_start_reporting(struct drm_atomic_state *state) +{ + struct drm_crtc_state *crtc_state; + struct drm_crtc *crtc; + int i; + + for_each_new_crtc_in_state(state, crtc, crtc_state, i) { + struct nv50_head *head = nv50_head(crtc); + struct nv50_head_atom *asyh = nv50_head_atom(crtc_state); + struct nv50_crc *crc = &head->crc; + u64 vbl_count; + + if (!asyh->set.crc) + continue; + + drm_crtc_vblank_get(crtc); + + spin_lock_irq(&crc->lock); + vbl_count = drm_crtc_vblank_count(crtc); + crc->frame = vbl_count; + crc->src = asyh->crc.src; + drm_vblank_work_schedule(&crc->flip_work, + vbl_count + crc->flip_threshold, + true); + spin_unlock_irq(&crc->lock); + + NV_ATOMIC(nouveau_drm(crtc->dev), + "CRC reporting on vblank for head-%d enabled\n", + head->base.index); + } +} + +int nv50_crc_atomic_check(struct nv50_head *head, + struct nv50_head_atom *asyh, + struct nv50_head_atom *armh) +{ + struct drm_atomic_state *state = asyh->state.state; + struct drm_device *dev = head->base.base.dev; + struct nv50_atom *atom = nv50_atom(state); + struct nv50_disp *disp = nv50_disp(dev); + struct drm_encoder *encoder; + struct nouveau_encoder *outp; + struct nv50_outp_atom *outp_atom; + bool changed = armh->crc.src != asyh->crc.src; + + if (!armh->crc.src && !asyh->crc.src) { + asyh->set.crc = false; + asyh->clr.crc = false; + return 0; + } + + /* While we don't care about entry tags, Volta+ hw always needs the + * controlling wndw channel programmed to a wndw that's owned by our + * head + */ + if (asyh->crc.src && disp->disp->object.oclass >= GV100_DISP && + !(BIT(asyh->crc.wndw) & asyh->wndw.owned)) { + if (!asyh->wndw.owned) { + /* TODO: once we support flexible channel ownership, + * we should write some code here to handle attempting + * to "steal" a plane: e.g. take a plane that is + * currently not-visible and owned by another head, + * and reassign it to this head. If we fail to do so, + * we shuld reject the mode outright as CRC capture + * then becomes impossible. + */ + NV_ATOMIC(nouveau_drm(dev), + "No available wndws for CRC readback\n"); + return -EINVAL; + } + asyh->crc.wndw = ffs(asyh->wndw.owned) - 1; + } + + if (drm_atomic_crtc_needs_modeset(&asyh->state) || changed || + armh->crc.wndw != asyh->crc.wndw) { + asyh->clr.crc = armh->crc.src && armh->state.active; + asyh->set.crc = asyh->crc.src && asyh->state.active; + if (changed) + asyh->set.or |= armh->or.crc_raster != + asyh->or.crc_raster; + + /* + * If we're reprogramming our OR, we need to flush the CRC + * disable first + */ + if (asyh->clr.crc) { + encoder = nv50_head_atom_get_encoder(armh); + outp = nv50_real_outp(encoder); + + list_for_each_entry(outp_atom, &atom->outp, head) { + if (outp_atom->encoder == encoder) { + if (outp_atom->set.mask) + atom->flush_disable = true; + break; + } + } + } + } else { + asyh->set.crc = false; + asyh->clr.crc = false; + } + + return 0; +} + +static enum nv50_crc_source_type +nv50_crc_source_type(struct nouveau_encoder *outp, + enum nv50_crc_source source) +{ + struct dcb_output *dcbe = outp->dcb; + + switch (source) { + case NV50_CRC_SOURCE_NONE: return NV50_CRC_SOURCE_TYPE_NONE; + case NV50_CRC_SOURCE_RG: return NV50_CRC_SOURCE_TYPE_RG; + default: break; + } + + if (dcbe->location != DCB_LOC_ON_CHIP) + return NV50_CRC_SOURCE_TYPE_PIOR; + + switch (dcbe->type) { + case DCB_OUTPUT_DP: return NV50_CRC_SOURCE_TYPE_SF; + case DCB_OUTPUT_ANALOG: return NV50_CRC_SOURCE_TYPE_DAC; + default: return NV50_CRC_SOURCE_TYPE_SOR; + } +} + +void nv50_crc_atomic_set(struct nv50_head *head, + struct nv50_head_atom *asyh) +{ + struct drm_crtc *crtc = &head->base.base; + struct drm_device *dev = crtc->dev; + struct nv50_crc *crc = &head->crc; + const struct nv50_crc_func *func = nv50_disp(dev)->core->func->crc; + struct nouveau_encoder *outp = + nv50_real_outp(nv50_head_atom_get_encoder(asyh)); + + func->set_src(head, outp->or, + nv50_crc_source_type(outp, asyh->crc.src), + &crc->ctx[crc->ctx_idx], asyh->crc.wndw); +} + +void nv50_crc_atomic_clr(struct nv50_head *head) +{ + const struct nv50_crc_func *func = + nv50_disp(head->base.base.dev)->core->func->crc; + + func->set_src(head, 0, NV50_CRC_SOURCE_TYPE_NONE, NULL, 0); +} + +#define NV50_CRC_RASTER_ACTIVE 0 +#define NV50_CRC_RASTER_COMPLETE 1 +#define NV50_CRC_RASTER_INACTIVE 2 + +static inline int +nv50_crc_raster_type(enum nv50_crc_source source) +{ + switch (source) { + case NV50_CRC_SOURCE_NONE: + case NV50_CRC_SOURCE_AUTO: + case NV50_CRC_SOURCE_RG: + case NV50_CRC_SOURCE_OUTP_ACTIVE: + return NV50_CRC_RASTER_ACTIVE; + case NV50_CRC_SOURCE_OUTP_COMPLETE: + return NV50_CRC_RASTER_COMPLETE; + case NV50_CRC_SOURCE_OUTP_INACTIVE: + return NV50_CRC_RASTER_INACTIVE; + } + + return 0; +} + +/* We handle mapping the memory for CRC notifiers ourselves, since each + * notifier needs it's own handle + */ +static inline int +nv50_crc_ctx_init(struct nv50_head *head, struct nvif_mmu *mmu, + struct nv50_crc_notifier_ctx *ctx, size_t len, int idx) +{ + struct nv50_core *core = nv50_disp(head->base.base.dev)->core; + int ret; + + ret = nvif_mem_init_map(mmu, NVIF_MEM_VRAM, len, &ctx->mem); + if (ret) + return ret; + + ret = nvif_object_init(&core->chan.base.user, + NV50_DISP_HANDLE_CRC_CTX(head, idx), + NV_DMA_IN_MEMORY, + &(struct nv_dma_v0) { + .target = NV_DMA_V0_TARGET_VRAM, + .access = NV_DMA_V0_ACCESS_RDWR, + .start = ctx->mem.addr, + .limit = ctx->mem.addr + + ctx->mem.size - 1, + }, sizeof(struct nv_dma_v0), + &ctx->ntfy); + if (ret) + goto fail_fini; + + return 0; + +fail_fini: + nvif_mem_fini(&ctx->mem); + return ret; +} + +static inline void +nv50_crc_ctx_fini(struct nv50_crc_notifier_ctx *ctx) +{ + nvif_object_fini(&ctx->ntfy); + nvif_mem_fini(&ctx->mem); +} + +int nv50_crc_set_source(struct drm_crtc *crtc, const char *source_str) +{ + struct drm_device *dev = crtc->dev; + struct drm_atomic_state *state; + struct drm_modeset_acquire_ctx ctx; + struct nv50_head *head = nv50_head(crtc); + struct nv50_crc *crc = &head->crc; + const struct nv50_crc_func *func = nv50_disp(dev)->core->func->crc; + struct nvif_mmu *mmu = &nouveau_drm(dev)->client.mmu; + struct nv50_head_atom *asyh; + struct drm_crtc_state *crtc_state; + enum nv50_crc_source source; + int ret = 0, ctx_flags = 0, i; + + ret = nv50_crc_parse_source(source_str, &source); + if (ret) + return ret; + + /* + * Since we don't want the user to accidentally interrupt us as we're + * disabling CRCs + */ + if (source) + ctx_flags |= DRM_MODESET_ACQUIRE_INTERRUPTIBLE; + drm_modeset_acquire_init(&ctx, ctx_flags); + + state = drm_atomic_state_alloc(dev); + if (!state) { + ret = -ENOMEM; + goto out_acquire_fini; + } + state->acquire_ctx = &ctx; + + if (source) { + for (i = 0; i < ARRAY_SIZE(head->crc.ctx); i++) { + ret = nv50_crc_ctx_init(head, mmu, &crc->ctx[i], + func->notifier_len, i); + if (ret) + goto out_ctx_fini; + } + } + +retry: + crtc_state = drm_atomic_get_crtc_state(state, &head->base.base); + if (IS_ERR(crtc_state)) { + ret = PTR_ERR(crtc_state); + if (ret == -EDEADLK) + goto deadlock; + else if (ret) + goto out_drop_locks; + } + asyh = nv50_head_atom(crtc_state); + asyh->crc.src = source; + asyh->or.crc_raster = nv50_crc_raster_type(source); + + ret = drm_atomic_commit(state); + if (ret == -EDEADLK) + goto deadlock; + else if (ret) + goto out_drop_locks; + + if (!source) { + /* + * If the user specified a custom flip threshold through + * debugfs, reset it + */ + crc->flip_threshold = func->flip_threshold; + } + +out_drop_locks: + drm_modeset_drop_locks(&ctx); +out_ctx_fini: + if (!source || ret) { + for (i = 0; i < ARRAY_SIZE(crc->ctx); i++) + nv50_crc_ctx_fini(&crc->ctx[i]); + } + drm_atomic_state_put(state); +out_acquire_fini: + drm_modeset_acquire_fini(&ctx); + return ret; + +deadlock: + drm_atomic_state_clear(state); + drm_modeset_backoff(&ctx); + goto retry; +} + +static int +nv50_crc_debugfs_flip_threshold_get(struct seq_file *m, void *data) +{ + struct nv50_head *head = m->private; + struct drm_crtc *crtc = &head->base.base; + struct nv50_crc *crc = &head->crc; + int ret; + + ret = drm_modeset_lock_single_interruptible(&crtc->mutex); + if (ret) + return ret; + + seq_printf(m, "%d\n", crc->flip_threshold); + + drm_modeset_unlock(&crtc->mutex); + return ret; +} + +static int +nv50_crc_debugfs_flip_threshold_open(struct inode *inode, struct file *file) +{ + return single_open(file, nv50_crc_debugfs_flip_threshold_get, + inode->i_private); +} + +static ssize_t +nv50_crc_debugfs_flip_threshold_set(struct file *file, + const char __user *ubuf, size_t len, + loff_t *offp) +{ + struct seq_file *m = file->private_data; + struct nv50_head *head = m->private; + struct nv50_head_atom *armh; + struct drm_crtc *crtc = &head->base.base; + struct nouveau_drm *drm = nouveau_drm(crtc->dev); + struct nv50_crc *crc = &head->crc; + const struct nv50_crc_func *func = + nv50_disp(crtc->dev)->core->func->crc; + int value, ret; + + ret = kstrtoint_from_user(ubuf, len, 10, &value); + if (ret) + return ret; + + if (value > func->flip_threshold) + return -EINVAL; + else if (value == -1) + value = func->flip_threshold; + else if (value < -1) + return -EINVAL; + + ret = drm_modeset_lock_single_interruptible(&crtc->mutex); + if (ret) + return ret; + + armh = nv50_head_atom(crtc->state); + if (armh->crc.src) { + ret = -EBUSY; + goto out; + } + + NV_DEBUG(drm, + "Changing CRC flip threshold for next capture on head-%d to %d\n", + head->base.index, value); + crc->flip_threshold = value; + ret = len; + +out: + drm_modeset_unlock(&crtc->mutex); + return ret; +} + +static const struct file_operations nv50_crc_flip_threshold_fops = { + .owner = THIS_MODULE, + .open = nv50_crc_debugfs_flip_threshold_open, + .read = seq_read, + .write = nv50_crc_debugfs_flip_threshold_set, +}; + +int nv50_head_crc_late_register(struct nv50_head *head) +{ + struct drm_crtc *crtc = &head->base.base; + const struct nv50_crc_func *func = + nv50_disp(crtc->dev)->core->func->crc; + struct dentry *root; + + if (!func || !crtc->debugfs_entry) + return 0; + + root = debugfs_create_dir("nv_crc", crtc->debugfs_entry); + debugfs_create_file("flip_threshold", 0644, root, head, + &nv50_crc_flip_threshold_fops); + + return 0; +} + +static inline void +nv50_crc_init_head(struct nv50_disp *disp, const struct nv50_crc_func *func, + struct nv50_head *head) +{ + struct nv50_crc *crc = &head->crc; + + crc->flip_threshold = func->flip_threshold; + spin_lock_init(&crc->lock); + drm_vblank_work_init(&crc->flip_work, &head->base.base, + nv50_crc_ctx_flip_work); +} + +void nv50_crc_init(struct drm_device *dev) +{ + struct nv50_disp *disp = nv50_disp(dev); + struct drm_crtc *crtc; + const struct nv50_crc_func *func = disp->core->func->crc; + + if (!func) + return; + + drm_for_each_crtc(crtc, dev) + nv50_crc_init_head(disp, func, nv50_head(crtc)); +} diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.h b/drivers/gpu/drm/nouveau/dispnv50/crc.h new file mode 100644 index 000000000000..fce3e20043a4 --- /dev/null +++ b/drivers/gpu/drm/nouveau/dispnv50/crc.h @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: MIT +#ifndef __NV50_CRC_H__ +#define __NV50_CRC_H__ + +#include <linux/mutex.h> +#include <drm/drm_crtc.h> +#include <drm/drm_vblank.h> + +#include <nvif/mem.h> +#include <nvkm/subdev/bios.h> +#include "nouveau_encoder.h" + +struct nv50_disp; +struct nv50_head; + +#if IS_ENABLED(CONFIG_DEBUG_FS) +enum nv50_crc_source { + NV50_CRC_SOURCE_NONE = 0, + NV50_CRC_SOURCE_AUTO, + NV50_CRC_SOURCE_RG, + NV50_CRC_SOURCE_OUTP_ACTIVE, + NV50_CRC_SOURCE_OUTP_COMPLETE, + NV50_CRC_SOURCE_OUTP_INACTIVE, +}; + +/* RG -> SF (DP only) + * -> SOR + * -> PIOR + * -> DAC + */ +enum nv50_crc_source_type { + NV50_CRC_SOURCE_TYPE_NONE = 0, + NV50_CRC_SOURCE_TYPE_SOR, + NV50_CRC_SOURCE_TYPE_PIOR, + NV50_CRC_SOURCE_TYPE_DAC, + NV50_CRC_SOURCE_TYPE_RG, + NV50_CRC_SOURCE_TYPE_SF, +}; + +struct nv50_crc_notifier_ctx { + struct nvif_mem mem; + struct nvif_object ntfy; +}; + +struct nv50_crc_atom { + enum nv50_crc_source src; + /* Only used for gv100+ */ + u8 wndw : 4; +}; + +struct nv50_crc_func { + void (*set_src)(struct nv50_head *, int or, enum nv50_crc_source_type, + struct nv50_crc_notifier_ctx *, u32 wndw); + void (*set_ctx)(struct nv50_head *, struct nv50_crc_notifier_ctx *); + u32 (*get_entry)(struct nv50_head *, struct nv50_crc_notifier_ctx *, + enum nv50_crc_source, int idx); + bool (*ctx_finished)(struct nv50_head *, + struct nv50_crc_notifier_ctx *); + short flip_threshold; + short num_entries; + size_t notifier_len; +}; + +struct nv50_crc { + spinlock_t lock; + struct nv50_crc_notifier_ctx ctx[2]; + struct drm_vblank_work flip_work; + enum nv50_crc_source src; + + u64 frame; + short entry_idx; + short flip_threshold; + u8 ctx_idx : 1; + bool ctx_changed : 1; +}; + +void nv50_crc_init(struct drm_device *dev); +int nv50_head_crc_late_register(struct nv50_head *); +void nv50_crc_handle_vblank(struct nv50_head *head); + +int nv50_crc_verify_source(struct drm_crtc *, const char *, size_t *); +const char *const *nv50_crc_get_sources(struct drm_crtc *, size_t *); +int nv50_crc_set_source(struct drm_crtc *, const char *); + +int nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, + struct nv50_head_atom *); +void nv50_crc_atomic_stop_reporting(struct drm_atomic_state *); +void nv50_crc_atomic_prepare_notifier_contexts(struct drm_atomic_state *); +void nv50_crc_atomic_start_reporting(struct drm_atomic_state *); +void nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *); +void nv50_crc_atomic_clr(struct nv50_head *); + +extern const struct nv50_crc_func crc907d; +extern const struct nv50_crc_func crcc37d; + +#else /* IS_ENABLED(CONFIG_DEBUG_FS) */ +struct nv50_crc {}; +struct nv50_crc_func {}; +struct nv50_crc_atom {}; + +#define nv50_crc_verify_source NULL +#define nv50_crc_get_sources NULL +#define nv50_crc_set_source NULL + +static inline void nv50_crc_init(struct drm_device *dev) {} +static inline int nv50_head_crc_late_register(struct nv50_head *) {} +static inline void +nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } + +static inline int +nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, + struct nv50_head_atom *) {} +static inline void +nv50_crc_atomic_stop_reporting(struct drm_atomic_state *) {} +static inline void +nv50_crc_atomic_prepare_notifier_contexts(struct drm_atomic_state *) {} +static inline void +nv50_crc_atomic_start_reporting(struct drm_atomic_state *) {} +static inline void +nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} +static inline void +nv50_crc_atomic_clr(struct nv50_head *) {} + +#endif /* IS_ENABLED(CONFIG_DEBUG_FS) */ +#endif /* !__NV50_CRC_H__ */ diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc907d.c b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c new file mode 100644 index 000000000000..92e907de7645 --- /dev/null +++ b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c @@ -0,0 +1,139 @@ +// SPDX-License-Identifier: MIT +#include <drm/drm_crtc.h> + +#include "crc.h" +#include "core.h" +#include "disp.h" +#include "head.h" + +#define CRC907D_MAX_ENTRIES 255 + +struct crc907d_notifier { + u32 status; + u32 :32; /* reserved */ + struct crc907d_entry { + u32 status; + u32 compositor_crc; + u32 output_crc[2]; + } entries[CRC907D_MAX_ENTRIES]; +} __packed; + +static void +crc907d_set_src(struct nv50_head *head, int or, + enum nv50_crc_source_type source, + struct nv50_crc_notifier_ctx *ctx, u32 wndw) +{ + struct drm_crtc *crtc = &head->base.base; + struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; + const u32 hoff = head->base.index * 0x300; + u32 *push; + u32 crc_args = 0xfff00000; + + switch (source) { + case NV50_CRC_SOURCE_TYPE_SOR: + crc_args |= (0x00000f0f + or * 16) << 8; + break; + case NV50_CRC_SOURCE_TYPE_PIOR: + crc_args |= (0x000000ff + or * 256) << 8; + break; + case NV50_CRC_SOURCE_TYPE_DAC: + crc_args |= (0x00000ff0 + or) << 8; + break; + case NV50_CRC_SOURCE_TYPE_RG: + crc_args |= (0x00000ff8 + drm_crtc_index(crtc)) << 8; + break; + case NV50_CRC_SOURCE_TYPE_SF: + crc_args |= (0x00000f8f + drm_crtc_index(crtc) * 16) << 8; + break; + case NV50_CRC_SOURCE_NONE: + crc_args |= 0x000fff00; + break; + } + + push = evo_wait(core, 4); + if (!push) + return; + + if (source) { + evo_mthd(push, 0x0438 + hoff, 1); + evo_data(push, ctx->ntfy.handle); + evo_mthd(push, 0x0430 + hoff, 1); + evo_data(push, crc_args); + } else { + evo_mthd(push, 0x0430 + hoff, 1); + evo_data(push, crc_args); + evo_mthd(push, 0x0438 + hoff, 1); + evo_data(push, 0); + } + evo_kick(push, core); +} + +static void crc907d_set_ctx(struct nv50_head *head, + struct nv50_crc_notifier_ctx *ctx) +{ + struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; + u32 *push = evo_wait(core, 2); + + if (!push) + return; + + evo_mthd(push, 0x0438 + (head->base.index * 0x300), 1); + evo_data(push, ctx ? ctx->ntfy.handle : 0); + evo_kick(push, core); +} + +static u32 crc907d_get_entry(struct nv50_head *head, + struct nv50_crc_notifier_ctx *ctx, + enum nv50_crc_source source, int idx) +{ + struct crc907d_notifier __iomem *notifier = ctx->mem.object.map.ptr; + + return ioread32_native(&notifier->entries[idx].output_crc[0]); +} + +static bool crc907d_ctx_finished(struct nv50_head *head, + struct nv50_crc_notifier_ctx *ctx) +{ + struct nouveau_drm *drm = nouveau_drm(head->base.base.dev); + struct crc907d_notifier __iomem *notifier = ctx->mem.object.map.ptr; + const u32 status = ioread32_native(&notifier->status); + const u32 overflow = status & 0x0000003e; + + if (!(status & 0x00000001)) + return false; + + if (overflow) { + const char *engine = NULL; + + switch (overflow) { + case 0x00000004: engine = "DSI"; break; + case 0x00000008: engine = "Compositor"; break; + case 0x00000010: engine = "CRC output 1"; break; + case 0x00000020: engine = "CRC output 2"; break; + } + + if (engine) + NV_ERROR(drm, + "CRC notifier context for head %d overflowed on %s: %x\n", + head->base.index, engine, status); + else + NV_ERROR(drm, + "CRC notifier context for head %d overflowed: %x\n", + head->base.index, status); + } + + NV_DEBUG(drm, "Head %d CRC context status: %x\n", + head->base.index, status); + + return true; +} + +const struct nv50_crc_func crc907d = { + .set_src = crc907d_set_src, + .set_ctx = crc907d_set_ctx, + .get_entry = crc907d_get_entry, + .ctx_finished = crc907d_ctx_finished, + .flip_threshold = CRC907D_MAX_ENTRIES - 10, + .num_entries = CRC907D_MAX_ENTRIES, + .notifier_len = sizeof(struct crc907d_notifier), +}; diff --git a/drivers/gpu/drm/nouveau/dispnv50/crcc37d.c b/drivers/gpu/drm/nouveau/dispnv50/crcc37d.c new file mode 100644 index 000000000000..940cefd5517d --- /dev/null +++ b/drivers/gpu/drm/nouveau/dispnv50/crcc37d.c @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: MIT +#include <drm/drm_crtc.h> + +#include "crc.h" +#include "core.h" +#include "disp.h" +#include "head.h" + +#define CRCC37D_MAX_ENTRIES 2047 + +struct crcc37d_notifier { + u32 status; + + /* reserved */ + u32 :32; + u32 :32; + u32 :32; + u32 :32; + u32 :32; + u32 :32; + u32 :32; + + struct crcc37d_entry { + u32 status[2]; + u32 :32; /* reserved */ + u32 compositor_crc; + u32 rg_crc; + u32 output_crc[2]; + u32 :32; /* reserved */ + } entries[CRCC37D_MAX_ENTRIES]; +} __packed; + +static void +crcc37d_set_src(struct nv50_head *head, int or, + enum nv50_crc_source_type source, + struct nv50_crc_notifier_ctx *ctx, u32 wndw) +{ + struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; + const u32 hoff = head->base.index * 0x400; + u32 *push; + u32 crc_args; + + switch (source) { + case NV50_CRC_SOURCE_TYPE_SOR: + crc_args = (0x00000050 + or) << 12; + break; + case NV50_CRC_SOURCE_TYPE_PIOR: + crc_args = (0x00000060 + or) << 12; + break; + case NV50_CRC_SOURCE_TYPE_SF: + crc_args = 0x00000030 << 12; + break; + default: + crc_args = 0; + break; + } + + push = evo_wait(core, 4); + if (!push) + return; + + if (source) { + evo_mthd(push, 0x2180 + hoff, 1); + evo_data(push, ctx->ntfy.handle); + evo_mthd(push, 0x2184 + hoff, 1); + evo_data(push, crc_args | wndw); + } else { + evo_mthd(push, 0x2184 + hoff, 1); + evo_data(push, 0); + evo_mthd(push, 0x2180 + hoff, 1); + evo_data(push, 0); + } + + evo_kick(push, core); +} + +static void crcc37d_set_ctx(struct nv50_head *head, + struct nv50_crc_notifier_ctx *ctx) +{ + struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; + u32 *push = evo_wait(core, 2); + + if (!push) + return; + + evo_mthd(push, 0x2180 + (head->base.index * 0x400), 1); + evo_data(push, ctx ? ctx->ntfy.handle : 0); + evo_kick(push, core); +} + +static u32 crcc37d_get_entry(struct nv50_head *head, + struct nv50_crc_notifier_ctx *ctx, + enum nv50_crc_source source, int idx) +{ + struct crcc37d_notifier __iomem *notifier = ctx->mem.object.map.ptr; + struct crcc37d_entry __iomem *entry = &notifier->entries[idx]; + u32 __iomem *crc_addr; + + if (source == NV50_CRC_SOURCE_RG) + crc_addr = &entry->rg_crc; + else + crc_addr = &entry->output_crc[0]; + + return ioread32_native(crc_addr); +} + +static bool crcc37d_ctx_finished(struct nv50_head *head, + struct nv50_crc_notifier_ctx *ctx) +{ + struct nouveau_drm *drm = nouveau_drm(head->base.base.dev); + struct crcc37d_notifier __iomem *notifier = ctx->mem.object.map.ptr; + const u32 status = ioread32_native(&notifier->status); + const u32 overflow = status & 0x0000007e; + + if (!(status & 0x00000001)) + return false; + + if (overflow) { + const char *engine = NULL; + + switch (overflow) { + case 0x00000004: engine = "Front End"; break; + case 0x00000008: engine = "Compositor"; break; + case 0x00000010: engine = "RG"; break; + case 0x00000020: engine = "CRC output 1"; break; + case 0x00000040: engine = "CRC output 2"; break; + } + + if (engine) + NV_ERROR(drm, + "CRC notifier context for head %d overflowed on %s: %x\n", + head->base.index, engine, status); + else + NV_ERROR(drm, + "CRC notifier context for head %d overflowed: %x\n", + head->base.index, status); + } + + NV_DEBUG(drm, "Head %d CRC context status: %x\n", + head->base.index, status); + + return true; +} + +const struct nv50_crc_func crcc37d = { + .set_src = crcc37d_set_src, + .set_ctx = crcc37d_set_ctx, + .get_entry = crcc37d_get_entry, + .ctx_finished = crcc37d_ctx_finished, + .flip_threshold = CRCC37D_MAX_ENTRIES - 30, + .num_entries = CRCC37D_MAX_ENTRIES, + .notifier_len = sizeof(struct crcc37d_notifier), +}; diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 568029825f62..91836d723262 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -776,6 +776,19 @@ struct nv50_msto { bool disabled; };

+struct nouveau_encoder *nv50_real_outp(struct drm_encoder *encoder) +{ + struct nv50_msto *msto; + + if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) + return nouveau_encoder(encoder); + + msto = nv50_msto(encoder); + if (!msto->mstc) + return NULL; + return msto->mstc->mstm->outp; +} + static struct drm_dp_payload * nv50_msto_payload(struct nv50_msto *msto) { @@ -1899,6 +1912,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) int i;

NV_ATOMIC(drm, "commit %d %d\n", atom->lock_core, atom->flush_disable); + nv50_crc_atomic_stop_reporting(state); drm_atomic_helper_wait_for_fences(dev, state, false); drm_atomic_helper_wait_for_dependencies(state); drm_atomic_helper_update_legacy_modeset_state(dev, state); @@ -1908,6 +1922,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state)

/* Disable head(s). */ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { + struct nv50_head_atom *armh = nv50_head_atom(old_crtc_state); struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state); struct nv50_head *head = nv50_head(crtc);

@@ -1920,7 +1935,8 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) }

if (asyh->clr.mask) { - nv50_head_flush_clr(head, asyh, atom->flush_disable); + nv50_head_flush_clr(head, armh, asyh, + atom->flush_disable); interlock[NV50_DISP_INTERLOCK_CORE] |= 1; } } @@ -1969,6 +1985,8 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) } }

+ nv50_crc_atomic_prepare_notifier_contexts(state); + /* Update output path(s). */ list_for_each_entry_safe(outp, outt, &atom->outp, head) { const struct drm_encoder_helper_funcs *help; @@ -1991,6 +2009,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state)

/* Update head(s). */ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { + struct nv50_head_atom *armh = nv50_head_atom(old_crtc_state); struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state); struct nv50_head *head = nv50_head(crtc);

@@ -1998,7 +2017,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) asyh->set.mask, asyh->clr.mask);

if (asyh->set.mask) { - nv50_head_flush_set(head, asyh); + nv50_head_flush_set(head, armh, asyh); interlock[NV50_DISP_INTERLOCK_CORE] = 1; }

@@ -2082,6 +2101,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) } }

+ nv50_crc_atomic_start_reporting(state); drm_atomic_helper_commit_hw_done(state); drm_atomic_helper_cleanup_planes(dev, state); drm_atomic_helper_commit_cleanup_done(state); diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.h b/drivers/gpu/drm/nouveau/dispnv50/disp.h index 8935ebce8ab0..da72223277fe 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.h +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.h @@ -1,10 +1,12 @@ #ifndef __NV50_KMS_H__ #define __NV50_KMS_H__ +#include <linux/workqueue.h> #include <nvif/mem.h>

#include "nouveau_display.h"

struct nv50_msto; +struct nouveau_encoder;

struct nv50_disp { struct nvif_disp *disp; @@ -89,6 +91,14 @@ int nv50_dmac_create(struct nvif_device *device, struct nvif_object *disp, u64 syncbuf, struct nv50_dmac *dmac); void nv50_dmac_destroy(struct nv50_dmac *);

+/* + * For normal encoders this just returns the encoder. For active MST encoders, + * this returns the real outp that's driving displays on the topology. + * Inactive MST encoders return NULL, since they would have no real outp to + * return anyway. + */ +struct nouveau_encoder *nv50_real_outp(struct drm_encoder *encoder); + u32 *evo_wait(struct nv50_dmac *, int nr); void evo_kick(u32 *, struct nv50_dmac *);

diff --git a/drivers/gpu/drm/nouveau/dispnv50/handles.h b/drivers/gpu/drm/nouveau/dispnv50/handles.h index d1beeb9a444d..27af7680294c 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/handles.h +++ b/drivers/gpu/drm/nouveau/dispnv50/handles.h @@ -11,5 +11,6 @@ #define NV50_DISP_HANDLE_VRAM 0xf0000001

#define NV50_DISP_HANDLE_WNDW_CTX(kind) (0xfb000000 | kind) +#define NV50_DISP_HANDLE_CRC_CTX(head, i) (0xfc000000 | head->base.index << 1 | i)

#endif /* !__NV50_KMS_HANDLES_H__ */ diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.c b/drivers/gpu/drm/nouveau/dispnv50/head.c index 72bc3bce396a..4668bcfb596c 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/head.c +++ b/drivers/gpu/drm/nouveau/dispnv50/head.c @@ -24,27 +24,36 @@ #include "core.h" #include "curs.h" #include "ovly.h" +#include "crc.h"

#include <nvif/class.h> +#include <nvif/event.h> +#include <nvif/cl0046.h>

#include <drm/drm_atomic_helper.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_vblank.h> #include "nouveau_connector.h" + void nv50_head_flush_clr(struct nv50_head *head, - struct nv50_head_atom *asyh, bool flush) + struct nv50_head_atom *armh, + struct nv50_head_atom *asyh, + bool flush) { union nv50_head_atom_mask clr = { .mask = asyh->clr.mask & ~(flush ? 0 : asyh->set.mask), }; + if (clr.crc) nv50_crc_atomic_clr(head); if (clr.olut) head->func->olut_clr(head); if (clr.core) head->func->core_clr(head); if (clr.curs) head->func->curs_clr(head); }

void -nv50_head_flush_set(struct nv50_head *head, struct nv50_head_atom *asyh) +nv50_head_flush_set(struct nv50_head *head, + struct nv50_head_atom *armh, + struct nv50_head_atom *asyh) { if (asyh->set.view ) head->func->view (head, asyh); if (asyh->set.mode ) head->func->mode (head, asyh); @@ -61,6 +70,7 @@ nv50_head_flush_set(struct nv50_head *head, struct nv50_head_atom *asyh) if (asyh->set.ovly ) head->func->ovly (head, asyh); if (asyh->set.dither ) head->func->dither (head, asyh); if (asyh->set.procamp) head->func->procamp (head, asyh); + if (asyh->set.crc ) nv50_crc_atomic_set (head, asyh); if (asyh->set.or ) head->func->or (head, asyh); }

@@ -313,7 +323,7 @@ nv50_head_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state) struct nouveau_conn_atom *asyc = NULL; struct drm_connector_state *conns; struct drm_connector *conn; - int i; + int i, ret;

NV_ATOMIC(drm, "%s atomic_check %d\n", crtc->name, asyh->state.active); if (asyh->state.active) { @@ -408,6 +418,10 @@ nv50_head_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state) asyh->set.curs = asyh->curs.visible; }

+ ret = nv50_crc_atomic_check(head, asyh, armh); + if (ret) + return ret; + if (asyh->clr.mask || asyh->set.mask) nv50_atom(asyh->state.state)->lock_core = true; return 0; @@ -446,6 +460,7 @@ nv50_head_atomic_duplicate_state(struct drm_crtc *crtc) asyh->ovly = armh->ovly; asyh->dither = armh->dither; asyh->procamp = armh->procamp; + asyh->crc = armh->crc; asyh->or = armh->or; asyh->dp = armh->dp; asyh->clr.mask = 0; @@ -467,10 +482,18 @@ nv50_head_reset(struct drm_crtc *crtc) __drm_atomic_helper_crtc_reset(crtc, &asyh->state); }

+static int +nv50_head_late_register(struct drm_crtc *crtc) +{ + return nv50_head_crc_late_register(nv50_head(crtc)); +} + static void nv50_head_destroy(struct drm_crtc *crtc) { struct nv50_head *head = nv50_head(crtc); + + nvif_notify_fini(&head->base.vblank); nv50_lut_fini(&head->olut); drm_crtc_cleanup(crtc); kfree(head); @@ -488,8 +511,38 @@ nv50_head_func = { .enable_vblank = nouveau_display_vblank_enable, .disable_vblank = nouveau_display_vblank_disable, .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, + .late_register = nv50_head_late_register, +}; + +static const struct drm_crtc_funcs +nvd9_head_func = { + .reset = nv50_head_reset, + .gamma_set = drm_atomic_helper_legacy_gamma_set, + .destroy = nv50_head_destroy, + .set_config = drm_atomic_helper_set_config, + .page_flip = drm_atomic_helper_page_flip, + .atomic_duplicate_state = nv50_head_atomic_duplicate_state, + .atomic_destroy_state = nv50_head_atomic_destroy_state, + .enable_vblank = nouveau_display_vblank_enable, + .disable_vblank = nouveau_display_vblank_disable, + .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, + .verify_crc_source = nv50_crc_verify_source, + .get_crc_sources = nv50_crc_get_sources, + .set_crc_source = nv50_crc_set_source, + .late_register = nv50_head_late_register, };

+static int nv50_head_vblank_handler(struct nvif_notify *notify) +{ + struct nouveau_crtc *nv_crtc = + container_of(notify, struct nouveau_crtc, vblank); + + if (drm_crtc_handle_vblank(&nv_crtc->base)) + nv50_crc_handle_vblank(nv50_head(&nv_crtc->base)); + + return NVIF_NOTIFY_KEEP; +} + struct nv50_head * nv50_head_create(struct drm_device *dev, int index) { @@ -497,7 +550,9 @@ nv50_head_create(struct drm_device *dev, int index) struct nv50_disp *disp = nv50_disp(dev); struct nv50_head *head; struct nv50_wndw *base, *ovly, *curs; + struct nouveau_crtc *nv_crtc; struct drm_crtc *crtc; + const struct drm_crtc_funcs *funcs; int ret;

head = kzalloc(sizeof(*head), GFP_KERNEL); @@ -507,6 +562,11 @@ nv50_head_create(struct drm_device *dev, int index) head->func = disp->core->func->head; head->base.index = index;

+ if (disp->disp->object.oclass < GF110_DISP) + funcs = &nv50_head_func; + else + funcs = &nvd9_head_func; + if (disp->disp->object.oclass < GV100_DISP) { ret = nv50_base_new(drm, head->base.index, &base); if (ret) @@ -531,9 +591,10 @@ nv50_head_create(struct drm_device *dev, int index) if (ret) goto fail_free;

- crtc = &head->base.base; + nv_crtc = &head->base; + crtc = &nv_crtc->base; drm_crtc_init_with_planes(dev, crtc, &base->plane, &curs->plane, - &nv50_head_func, "head-%d", head->base.index); + funcs, "head-%d", head->base.index); drm_crtc_helper_add(crtc, &nv50_head_help); /* Keep the legacy gamma size at 256 to avoid compatibility issues */ drm_mode_crtc_set_gamma_size(crtc, 256); @@ -547,8 +608,22 @@ nv50_head_create(struct drm_device *dev, int index) goto fail_crtc_cleanup; }

+ ret = nvif_notify_init(&disp->disp->object, nv50_head_vblank_handler, + false, NV04_DISP_NTFY_VBLANK, + &(struct nvif_notify_head_req_v0) { + .head = nv_crtc->index, + }, + sizeof(struct nvif_notify_head_req_v0), + sizeof(struct nvif_notify_head_rep_v0), + &nv_crtc->vblank); + if (ret) + goto fail_lut_fini; + return head;

+fail_lut_fini: + if (head->func->olut_set) + nv50_lut_fini(&head->olut); fail_crtc_cleanup: drm_crtc_cleanup(crtc); fail_free: diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.h b/drivers/gpu/drm/nouveau/dispnv50/head.h index c05bbba9e247..2e57910ba450 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/head.h +++ b/drivers/gpu/drm/nouveau/dispnv50/head.h @@ -1,22 +1,29 @@ #ifndef __NV50_KMS_HEAD_H__ #define __NV50_KMS_HEAD_H__ #define nv50_head(c) container_of((c), struct nv50_head, base.base) +#include <linux/workqueue.h> + #include "disp.h" #include "atom.h" +#include "crc.h" #include "lut.h"

#include "nouveau_crtc.h" +#include "nouveau_encoder.h"

struct nv50_head { const struct nv50_head_func *func; struct nouveau_crtc base; + struct nv50_crc crc; struct nv50_lut olut; struct nv50_msto *msto; };

struct nv50_head *nv50_head_create(struct drm_device *, int index); -void nv50_head_flush_set(struct nv50_head *, struct nv50_head_atom *); -void nv50_head_flush_clr(struct nv50_head *, struct nv50_head_atom *, bool y); +void nv50_head_flush_set(struct nv50_head *, struct nv50_head_atom *armh, + struct nv50_head_atom *asyh); +void nv50_head_flush_clr(struct nv50_head *, struct nv50_head_atom *armh, + struct nv50_head_atom *asyh, bool y);

struct nv50_head_func { void (*view)(struct nv50_head *, struct nv50_head_atom *); diff --git a/drivers/gpu/drm/nouveau/dispnv50/head907d.c b/drivers/gpu/drm/nouveau/dispnv50/head907d.c index 3002ec23d7a6..63a0b45d96d6 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/head907d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/head907d.c @@ -19,8 +19,15 @@ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ +#include <drm/drm_connector.h> +#include <drm/drm_mode_config.h> +#include <drm/drm_vblank.h> +#include "nouveau_drv.h" +#include "nouveau_bios.h" +#include "nouveau_connector.h" #include "head.h" #include "core.h" +#include "crc.h"

void head907d_or(struct nv50_head *head, struct nv50_head_atom *asyh) @@ -29,9 +36,10 @@ head907d_or(struct nv50_head *head, struct nv50_head_atom *asyh) u32 *push; if ((push = evo_wait(core, 3))) { evo_mthd(push, 0x0404 + (head->base.index * 0x300), 2); - evo_data(push, 0x00000001 | asyh->or.depth << 6 | - asyh->or.nvsync << 4 | - asyh->or.nhsync << 3); + evo_data(push, asyh->or.depth << 6 | + asyh->or.nvsync << 4 | + asyh->or.nhsync << 3 | + asyh->or.crc_raster); evo_data(push, 0x31ec6000 | head->base.index << 25 | asyh->mode.interlace); evo_kick(push, core); diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc37d.c b/drivers/gpu/drm/nouveau/dispnv50/headc37d.c index cf5a68f4021a..87dd11b2fe96 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/headc37d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/headc37d.c @@ -46,10 +46,10 @@ headc37d_or(struct nv50_head *head, struct nv50_head_atom *asyh) }

evo_mthd(push, 0x2004 + (head->base.index * 0x400), 1); - evo_data(push, 0x00000001 | - asyh->or.depth << 4 | + evo_data(push, depth << 4 | asyh->or.nvsync << 3 | - asyh->or.nhsync << 2); + asyh->or.nhsync << 2 | + asyh->or.crc_raster); evo_kick(push, core); } } diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c index 65e3b60804c6..e6cef3593aec 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c +++ b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c @@ -46,10 +46,11 @@ headc57d_or(struct nv50_head *head, struct nv50_head_atom *asyh) }

evo_mthd(push, 0x2004 + (head->base.index * 0x400), 1); - evo_data(push, 0xfc000001 | - asyh->or.depth << 4 | + evo_data(push, 0xfc000000 | + depth << 4 | asyh->or.nvsync << 3 | - asyh->or.nhsync << 2); + asyh->or.nhsync << 2 | + asyh->or.crc_raster); evo_kick(push, core); } } diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index 700817dc4fa0..7a0bd9a720a0 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -43,15 +43,7 @@ #include <nvif/class.h> #include <nvif/cl0046.h> #include <nvif/event.h> - -static int -nouveau_display_vblank_handler(struct nvif_notify *notify) -{ - struct nouveau_crtc *nv_crtc = - container_of(notify, typeof(*nv_crtc), vblank); - drm_crtc_handle_vblank(&nv_crtc->base); - return NVIF_NOTIFY_KEEP; -} +#include <dispnv50/crc.h>

int nouveau_display_vblank_enable(struct drm_crtc *crtc) @@ -135,50 +127,6 @@ nouveau_display_scanoutpos(struct drm_crtc *crtc, stime, etime); }

-static void -nouveau_display_vblank_fini(struct drm_device *dev) -{ - struct drm_crtc *crtc; - - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); - nvif_notify_fini(&nv_crtc->vblank); - } -} - -static int -nouveau_display_vblank_init(struct drm_device *dev) -{ - struct nouveau_display *disp = nouveau_display(dev); - struct drm_crtc *crtc; - int ret; - - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); - ret = nvif_notify_init(&disp->disp.object, - nouveau_display_vblank_handler, false, - NV04_DISP_NTFY_VBLANK, - &(struct nvif_notify_head_req_v0) { - .head = nv_crtc->index, - }, - sizeof(struct nvif_notify_head_req_v0), - sizeof(struct nvif_notify_head_rep_v0), - &nv_crtc->vblank); - if (ret) { - nouveau_display_vblank_fini(dev); - return ret; - } - } - - ret = drm_vblank_init(dev, dev->mode_config.num_crtc); - if (ret) { - nouveau_display_vblank_fini(dev); - return ret; - } - - return 0; -} - static void nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb) { @@ -545,9 +493,12 @@ nouveau_display_create(struct drm_device *dev) drm_mode_config_reset(dev);

if (dev->mode_config.num_crtc) { - ret = nouveau_display_vblank_init(dev); + ret = drm_vblank_init(dev, dev->mode_config.num_crtc); if (ret) goto vblank_err; + + if (disp->disp.object.oclass >= NV50_DISP) + nv50_crc_init(dev); }

INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work); @@ -574,7 +525,6 @@ nouveau_display_destroy(struct drm_device *dev) #ifdef CONFIG_ACPI unregister_acpi_notifier(&nouveau_drm(dev)->acpi_nb); #endif - nouveau_display_vblank_fini(dev);

drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev);