drm/radeon/kms: add support for multiple fence queues v2
For supporting multiple CP ring buffers, async DMA
engines and UVD. We still need a way to synchronize
between engines.
v2 initialize unused fence driver ring to avoid issue in
suspend/unload
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c
index 7027766e..086b8a3 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/drivers/gpu/drm/radeon/radeon_fence.c
@@ -40,32 +40,37 @@
#include "radeon.h"
#include "radeon_trace.h"
-static void radeon_fence_write(struct radeon_device *rdev, u32 seq)
+static void radeon_fence_write(struct radeon_device *rdev, u32 seq, int ring)
{
+ u32 scratch_index;
+
if (rdev->wb.enabled) {
- u32 scratch_index;
if (rdev->wb.use_event)
- scratch_index = R600_WB_EVENT_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+ scratch_index = R600_WB_EVENT_OFFSET +
+ rdev->fence_drv[ring].scratch_reg - rdev->scratch.reg_base;
else
- scratch_index = RADEON_WB_SCRATCH_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+ scratch_index = RADEON_WB_SCRATCH_OFFSET +
+ rdev->fence_drv[ring].scratch_reg - rdev->scratch.reg_base;
rdev->wb.wb[scratch_index/4] = cpu_to_le32(seq);
} else
- WREG32(rdev->fence_drv.scratch_reg, seq);
+ WREG32(rdev->fence_drv[ring].scratch_reg, seq);
}
-static u32 radeon_fence_read(struct radeon_device *rdev)
+static u32 radeon_fence_read(struct radeon_device *rdev, int ring)
{
- u32 seq;
+ u32 seq = 0;
+ u32 scratch_index;
if (rdev->wb.enabled) {
- u32 scratch_index;
if (rdev->wb.use_event)
- scratch_index = R600_WB_EVENT_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+ scratch_index = R600_WB_EVENT_OFFSET +
+ rdev->fence_drv[ring].scratch_reg - rdev->scratch.reg_base;
else
- scratch_index = RADEON_WB_SCRATCH_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+ scratch_index = RADEON_WB_SCRATCH_OFFSET +
+ rdev->fence_drv[ring].scratch_reg - rdev->scratch.reg_base;
seq = le32_to_cpu(rdev->wb.wb[scratch_index/4]);
} else
- seq = RREG32(rdev->fence_drv.scratch_reg);
+ seq = RREG32(rdev->fence_drv[ring].scratch_reg);
return seq;
}
@@ -73,28 +78,28 @@
{
unsigned long irq_flags;
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
if (fence->emitted) {
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
return 0;
}
- fence->seq = atomic_add_return(1, &rdev->fence_drv.seq);
+ fence->seq = atomic_add_return(1, &rdev->fence_drv[fence->ring].seq);
if (!rdev->cp.ready)
/* FIXME: cp is not running assume everythings is done right
* away
*/
- radeon_fence_write(rdev, fence->seq);
+ radeon_fence_write(rdev, fence->seq, fence->ring);
else
radeon_fence_ring_emit(rdev, fence);
trace_radeon_fence_emit(rdev->ddev, fence->seq);
fence->emitted = true;
- list_move_tail(&fence->list, &rdev->fence_drv.emitted);
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ list_move_tail(&fence->list, &rdev->fence_drv[fence->ring].emitted);
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
return 0;
}
-static bool radeon_fence_poll_locked(struct radeon_device *rdev)
+static bool radeon_fence_poll_locked(struct radeon_device *rdev, int ring)
{
struct radeon_fence *fence;
struct list_head *i, *n;
@@ -102,34 +107,34 @@
bool wake = false;
unsigned long cjiffies;
- seq = radeon_fence_read(rdev);
- if (seq != rdev->fence_drv.last_seq) {
- rdev->fence_drv.last_seq = seq;
- rdev->fence_drv.last_jiffies = jiffies;
- rdev->fence_drv.last_timeout = RADEON_FENCE_JIFFIES_TIMEOUT;
+ seq = radeon_fence_read(rdev, ring);
+ if (seq != rdev->fence_drv[ring].last_seq) {
+ rdev->fence_drv[ring].last_seq = seq;
+ rdev->fence_drv[ring].last_jiffies = jiffies;
+ rdev->fence_drv[ring].last_timeout = RADEON_FENCE_JIFFIES_TIMEOUT;
} else {
cjiffies = jiffies;
- if (time_after(cjiffies, rdev->fence_drv.last_jiffies)) {
- cjiffies -= rdev->fence_drv.last_jiffies;
- if (time_after(rdev->fence_drv.last_timeout, cjiffies)) {
+ if (time_after(cjiffies, rdev->fence_drv[ring].last_jiffies)) {
+ cjiffies -= rdev->fence_drv[ring].last_jiffies;
+ if (time_after(rdev->fence_drv[ring].last_timeout, cjiffies)) {
/* update the timeout */
- rdev->fence_drv.last_timeout -= cjiffies;
+ rdev->fence_drv[ring].last_timeout -= cjiffies;
} else {
/* the 500ms timeout is elapsed we should test
* for GPU lockup
*/
- rdev->fence_drv.last_timeout = 1;
+ rdev->fence_drv[ring].last_timeout = 1;
}
} else {
/* wrap around update last jiffies, we will just wait
* a little longer
*/
- rdev->fence_drv.last_jiffies = cjiffies;
+ rdev->fence_drv[ring].last_jiffies = cjiffies;
}
return false;
}
n = NULL;
- list_for_each(i, &rdev->fence_drv.emitted) {
+ list_for_each(i, &rdev->fence_drv[ring].emitted) {
fence = list_entry(i, struct radeon_fence, list);
if (fence->seq == seq) {
n = i;
@@ -141,11 +146,11 @@
i = n;
do {
n = i->prev;
- list_move_tail(i, &rdev->fence_drv.signaled);
+ list_move_tail(i, &rdev->fence_drv[ring].signaled);
fence = list_entry(i, struct radeon_fence, list);
fence->signaled = true;
i = n;
- } while (i != &rdev->fence_drv.emitted);
+ } while (i != &rdev->fence_drv[ring].emitted);
wake = true;
}
return wake;
@@ -157,14 +162,16 @@
struct radeon_fence *fence;
fence = container_of(kref, struct radeon_fence, kref);
- write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&fence->rdev->fence_lock, irq_flags);
list_del(&fence->list);
fence->emitted = false;
- write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);
+ write_unlock_irqrestore(&fence->rdev->fence_lock, irq_flags);
kfree(fence);
}
-int radeon_fence_create(struct radeon_device *rdev, struct radeon_fence **fence)
+int radeon_fence_create(struct radeon_device *rdev,
+ struct radeon_fence **fence,
+ int ring)
{
unsigned long irq_flags;
@@ -177,15 +184,15 @@
(*fence)->emitted = false;
(*fence)->signaled = false;
(*fence)->seq = 0;
+ (*fence)->ring = ring;
INIT_LIST_HEAD(&(*fence)->list);
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
- list_add_tail(&(*fence)->list, &rdev->fence_drv.created);
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ list_add_tail(&(*fence)->list, &rdev->fence_drv[ring].created);
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
return 0;
}
-
bool radeon_fence_signaled(struct radeon_fence *fence)
{
unsigned long irq_flags;
@@ -197,7 +204,7 @@
if (fence->rdev->gpu_lockup)
return true;
- write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&fence->rdev->fence_lock, irq_flags);
signaled = fence->signaled;
/* if we are shuting down report all fence as signaled */
if (fence->rdev->shutdown) {
@@ -208,10 +215,10 @@
signaled = true;
}
if (!signaled) {
- radeon_fence_poll_locked(fence->rdev);
+ radeon_fence_poll_locked(fence->rdev, fence->ring);
signaled = fence->signaled;
}
- write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);
+ write_unlock_irqrestore(&fence->rdev->fence_lock, irq_flags);
return signaled;
}
@@ -230,14 +237,14 @@
if (radeon_fence_signaled(fence)) {
return 0;
}
- timeout = rdev->fence_drv.last_timeout;
+ timeout = rdev->fence_drv[fence->ring].last_timeout;
retry:
/* save current sequence used to check for GPU lockup */
- seq = rdev->fence_drv.last_seq;
+ seq = rdev->fence_drv[fence->ring].last_seq;
trace_radeon_fence_wait_begin(rdev->ddev, seq);
if (intr) {
radeon_irq_kms_sw_irq_get(rdev);
- r = wait_event_interruptible_timeout(rdev->fence_drv.queue,
+ r = wait_event_interruptible_timeout(rdev->fence_drv[fence->ring].queue,
radeon_fence_signaled(fence), timeout);
radeon_irq_kms_sw_irq_put(rdev);
if (unlikely(r < 0)) {
@@ -245,7 +252,7 @@
}
} else {
radeon_irq_kms_sw_irq_get(rdev);
- r = wait_event_timeout(rdev->fence_drv.queue,
+ r = wait_event_timeout(rdev->fence_drv[fence->ring].queue,
radeon_fence_signaled(fence), timeout);
radeon_irq_kms_sw_irq_put(rdev);
}
@@ -258,10 +265,11 @@
timeout = r;
goto retry;
}
- /* don't protect read access to rdev->fence_drv.last_seq
+ /* don't protect read access to rdev->fence_drv[t].last_seq
* if we experiencing a lockup the value doesn't change
*/
- if (seq == rdev->fence_drv.last_seq && radeon_gpu_is_lockup(rdev)) {
+ if (seq == rdev->fence_drv[fence->ring].last_seq &&
+ radeon_gpu_is_lockup(rdev)) {
/* good news we believe it's a lockup */
printk(KERN_WARNING "GPU lockup (waiting for 0x%08X last fence id 0x%08X)\n",
fence->seq, seq);
@@ -272,20 +280,20 @@
r = radeon_gpu_reset(rdev);
if (r)
return r;
- radeon_fence_write(rdev, fence->seq);
+ radeon_fence_write(rdev, fence->seq, fence->ring);
rdev->gpu_lockup = false;
}
timeout = RADEON_FENCE_JIFFIES_TIMEOUT;
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
- rdev->fence_drv.last_timeout = RADEON_FENCE_JIFFIES_TIMEOUT;
- rdev->fence_drv.last_jiffies = jiffies;
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ rdev->fence_drv[fence->ring].last_timeout = RADEON_FENCE_JIFFIES_TIMEOUT;
+ rdev->fence_drv[fence->ring].last_jiffies = jiffies;
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
goto retry;
}
return 0;
}
-int radeon_fence_wait_next(struct radeon_device *rdev)
+int radeon_fence_wait_next(struct radeon_device *rdev, int ring)
{
unsigned long irq_flags;
struct radeon_fence *fence;
@@ -294,21 +302,21 @@
if (rdev->gpu_lockup) {
return 0;
}
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
- if (list_empty(&rdev->fence_drv.emitted)) {
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ if (list_empty(&rdev->fence_drv[ring].emitted)) {
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
return 0;
}
- fence = list_entry(rdev->fence_drv.emitted.next,
+ fence = list_entry(rdev->fence_drv[ring].emitted.next,
struct radeon_fence, list);
radeon_fence_ref(fence);
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
r = radeon_fence_wait(fence, false);
radeon_fence_unref(&fence);
return r;
}
-int radeon_fence_wait_last(struct radeon_device *rdev)
+int radeon_fence_wait_last(struct radeon_device *rdev, int ring)
{
unsigned long irq_flags;
struct radeon_fence *fence;
@@ -317,15 +325,15 @@
if (rdev->gpu_lockup) {
return 0;
}
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
- if (list_empty(&rdev->fence_drv.emitted)) {
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ if (list_empty(&rdev->fence_drv[ring].emitted)) {
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
return 0;
}
- fence = list_entry(rdev->fence_drv.emitted.prev,
+ fence = list_entry(rdev->fence_drv[ring].emitted.prev,
struct radeon_fence, list);
radeon_fence_ref(fence);
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
r = radeon_fence_wait(fence, false);
radeon_fence_unref(&fence);
return r;
@@ -347,39 +355,49 @@
}
}
-void radeon_fence_process(struct radeon_device *rdev)
+void radeon_fence_process(struct radeon_device *rdev, int ring)
{
unsigned long irq_flags;
bool wake;
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
- wake = radeon_fence_poll_locked(rdev);
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ wake = radeon_fence_poll_locked(rdev, ring);
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
if (wake) {
- wake_up_all(&rdev->fence_drv.queue);
+ wake_up_all(&rdev->fence_drv[ring].queue);
}
}
-int radeon_fence_driver_init(struct radeon_device *rdev)
+int radeon_fence_driver_init(struct radeon_device *rdev, int num_rings)
{
unsigned long irq_flags;
- int r;
+ int r, ring;
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
- r = radeon_scratch_get(rdev, &rdev->fence_drv.scratch_reg);
- if (r) {
- dev_err(rdev->dev, "fence failed to get scratch register\n");
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
- return r;
+ for (ring = 0; ring < num_rings; ring++) {
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ r = radeon_scratch_get(rdev, &rdev->fence_drv[ring].scratch_reg);
+ if (r) {
+ dev_err(rdev->dev, "fence failed to get scratch register\n");
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
+ return r;
+ }
+ radeon_fence_write(rdev, 0, ring);
+ atomic_set(&rdev->fence_drv[ring].seq, 0);
+ INIT_LIST_HEAD(&rdev->fence_drv[ring].created);
+ INIT_LIST_HEAD(&rdev->fence_drv[ring].emitted);
+ INIT_LIST_HEAD(&rdev->fence_drv[ring].signaled);
+ init_waitqueue_head(&rdev->fence_drv[ring].queue);
+ rdev->fence_drv[ring].initialized = true;
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
}
- radeon_fence_write(rdev, 0);
- atomic_set(&rdev->fence_drv.seq, 0);
- INIT_LIST_HEAD(&rdev->fence_drv.created);
- INIT_LIST_HEAD(&rdev->fence_drv.emitted);
- INIT_LIST_HEAD(&rdev->fence_drv.signaled);
- init_waitqueue_head(&rdev->fence_drv.queue);
- rdev->fence_drv.initialized = true;
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+ for (ring = num_rings; ring < RADEON_NUM_RINGS; ring++) {
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ INIT_LIST_HEAD(&rdev->fence_drv[ring].created);
+ INIT_LIST_HEAD(&rdev->fence_drv[ring].emitted);
+ INIT_LIST_HEAD(&rdev->fence_drv[ring].signaled);
+ rdev->fence_drv[ring].initialized = false;
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
+ }
if (radeon_debugfs_fence_init(rdev)) {
dev_err(rdev->dev, "fence debugfs file creation failed\n");
}
@@ -389,14 +407,17 @@
void radeon_fence_driver_fini(struct radeon_device *rdev)
{
unsigned long irq_flags;
+ int ring;
- if (!rdev->fence_drv.initialized)
- return;
- wake_up_all(&rdev->fence_drv.queue);
- write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
- radeon_scratch_free(rdev, rdev->fence_drv.scratch_reg);
- write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
- rdev->fence_drv.initialized = false;
+ for (ring = 0; ring < RADEON_NUM_RINGS; ring++) {
+ if (!rdev->fence_drv[ring].initialized)
+ continue;
+ wake_up_all(&rdev->fence_drv[ring].queue);
+ write_lock_irqsave(&rdev->fence_lock, irq_flags);
+ radeon_scratch_free(rdev, rdev->fence_drv[ring].scratch_reg);
+ write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
+ rdev->fence_drv[ring].initialized = false;
+ }
}
@@ -410,14 +431,21 @@
struct drm_device *dev = node->minor->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_fence *fence;
+ int i;
- seq_printf(m, "Last signaled fence 0x%08X\n",
- radeon_fence_read(rdev));
- if (!list_empty(&rdev->fence_drv.emitted)) {
- fence = list_entry(rdev->fence_drv.emitted.prev,
- struct radeon_fence, list);
- seq_printf(m, "Last emitted fence %p with 0x%08X\n",
- fence, fence->seq);
+ for (i = 0; i < RADEON_NUM_RINGS; ++i) {
+ if (!rdev->fence_drv[i].initialized)
+ continue;
+
+ seq_printf(m, "--- ring %d ---\n", i);
+ seq_printf(m, "Last signaled fence 0x%08X\n",
+ radeon_fence_read(rdev, i));
+ if (!list_empty(&rdev->fence_drv[i].emitted)) {
+ fence = list_entry(rdev->fence_drv[i].emitted.prev,
+ struct radeon_fence, list);
+ seq_printf(m, "Last emitted fence %p with 0x%08X\n",
+ fence, fence->seq);
+ }
}
return 0;
}