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drm/vmwgfx: Add command buffer support v3

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Add command buffer support.
Currently we don't implement preemption or fancy error handling.
Tested with a couple of mesa-demos, compiz/unity and viewperf maya-03.

v2:
- Synchronize with pending work at command buffer manager takedown.
- Add an interface to flush the current command buffer for latency-critical
  command batches and apply it to framebuffer dirtying.

v3:
- Minor fixes of definitions and typos to address reviews.
- Removed new or moved branch predictor hints.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
This commit is contained in:
Thomas Hellstrom
2015-06-25 11:57:56 -07:00
parent cb09bbcc42
commit 3eab3d9eef
10 changed files with 1656 additions and 33 deletions
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41
drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
View File

@@ -56,6 +56,9 @@ irqreturn_t vmw_irq_handler(int irq, void *arg)
if (masked_status & SVGA_IRQFLAG_FIFO_PROGRESS)
wake_up_all(&dev_priv->fifo_queue);
if (masked_status & (SVGA_IRQFLAG_COMMAND_BUFFER |
SVGA_IRQFLAG_ERROR))
vmw_cmdbuf_tasklet_schedule(dev_priv->cman);
return IRQ_HANDLED;
}
@@ -131,8 +134,16 @@ int vmw_fallback_wait(struct vmw_private *dev_priv,
* Block command submission while waiting for idle.
*/
if (fifo_idle)
if (fifo_idle) {
down_read(&fifo_state->rwsem);
if (dev_priv->cman) {
ret = vmw_cmdbuf_idle(dev_priv->cman, interruptible,
10*HZ);
if (ret)
goto out_err;
}
}
signal_seq = atomic_read(&dev_priv->marker_seq);
ret = 0;
@@ -171,6 +182,7 @@ int vmw_fallback_wait(struct vmw_private *dev_priv,
iowrite32(signal_seq, fifo_mem + SVGA_FIFO_FENCE);
}
wake_up_all(&dev_priv->fence_queue);
out_err:
if (fifo_idle)
up_read(&fifo_state->rwsem);
@@ -315,3 +327,30 @@ void vmw_irq_uninstall(struct drm_device *dev)
status = inl(dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
outl(status, dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
}
void vmw_generic_waiter_add(struct vmw_private *dev_priv,
u32 flag, int *waiter_count)
{
unsigned long irq_flags;
spin_lock_irqsave(&dev_priv->irq_lock, irq_flags);
if ((*waiter_count)++ == 0) {
outl(flag, dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
dev_priv->irq_mask |= flag;
vmw_write(dev_priv, SVGA_REG_IRQMASK, dev_priv->irq_mask);
}
spin_unlock_irqrestore(&dev_priv->irq_lock, irq_flags);
}
void vmw_generic_waiter_remove(struct vmw_private *dev_priv,
u32 flag, int *waiter_count)
{
unsigned long irq_flags;
spin_lock_irqsave(&dev_priv->irq_lock, irq_flags);
if (--(*waiter_count) == 0) {
dev_priv->irq_mask &= ~flag;
vmw_write(dev_priv, SVGA_REG_IRQMASK, dev_priv->irq_mask);
}
spin_unlock_irqrestore(&dev_priv->irq_lock, irq_flags);
}