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| author | Ben Skeggs <bskeggs@redhat.com> | 2010-11-19 14:32:56 +1000 |
|---|---|---|
| committer | Francisco Jerez <currojerez@riseup.net> | 2010-12-08 03:00:36 +0100 |
| commit | 12fb9525075982bc65cfd71427dd7afdf47bafed (patch) | |
| tree | 0e8b75e10ec7c5b607f14d24b857041850bc40d9 /drivers/gpu/drm/nouveau/nouveau_state.c | |
| parent | ceac30999dfb00ee7b56cfea8b28ef50999a3c95 (diff) | |
| download | blackbird-op-linux-12fb9525075982bc65cfd71427dd7afdf47bafed.tar.gz blackbird-op-linux-12fb9525075982bc65cfd71427dd7afdf47bafed.zip | |
drm/nouveau: introduce a util function to wait on reg != val
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_state.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_state.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c index e779e9320453..e0811f93243d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_state.c +++ b/drivers/gpu/drm/nouveau/nouveau_state.c @@ -1126,8 +1126,9 @@ nouveau_ioctl_setparam(struct drm_device *dev, void *data, } /* Wait until (value(reg) & mask) == val, up until timeout has hit */ -bool nouveau_wait_until(struct drm_device *dev, uint64_t timeout, - uint32_t reg, uint32_t mask, uint32_t val) +bool +nouveau_wait_eq(struct drm_device *dev, uint64_t timeout, + uint32_t reg, uint32_t mask, uint32_t val) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer; @@ -1141,6 +1142,23 @@ bool nouveau_wait_until(struct drm_device *dev, uint64_t timeout, return false; } +/* Wait until (value(reg) & mask) != val, up until timeout has hit */ +bool +nouveau_wait_ne(struct drm_device *dev, uint64_t timeout, + uint32_t reg, uint32_t mask, uint32_t val) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer; + uint64_t start = ptimer->read(dev); + + do { + if ((nv_rd32(dev, reg) & mask) != val) + return true; + } while (ptimer->read(dev) - start < timeout); + + return false; +} + /* Waits for PGRAPH to go completely idle */ bool nouveau_wait_for_idle(struct drm_device *dev) { |
