diff options
| -rw-r--r-- | shared-core/nouveau_drv.h | 2 | ||||
| -rw-r--r-- | shared-core/nouveau_state.c | 8 | ||||
| -rw-r--r-- | shared-core/nv04_timer.c | 21 |
3 files changed, 31 insertions, 0 deletions
diff --git a/shared-core/nouveau_drv.h b/shared-core/nouveau_drv.h index f68304c9..9e11f9b7 100644 --- a/shared-core/nouveau_drv.h +++ b/shared-core/nouveau_drv.h @@ -157,6 +157,7 @@ struct nouveau_engine_func { struct { int (*init)(struct drm_device *dev); + uint64_t (*read)(struct drm_device *dev); void (*takedown)(struct drm_device *dev); } timer; @@ -469,6 +470,7 @@ extern void nv50_mc_takedown(struct drm_device *dev); /* nv04_timer.c */ extern int nv04_timer_init(struct drm_device *dev); +extern uint64_t nv04_timer_read(struct drm_device *dev); extern void nv04_timer_takedown(struct drm_device *dev); extern long nouveau_compat_ioctl(struct file *filp, unsigned int cmd, diff --git a/shared-core/nouveau_state.c b/shared-core/nouveau_state.c index 4e3b39dd..5b67aea1 100644 --- a/shared-core/nouveau_state.c +++ b/shared-core/nouveau_state.c @@ -88,6 +88,8 @@ static int nouveau_init_card_mappings(struct drm_device *dev) static int nouveau_stub_init(struct drm_device *dev) { return 0; } static void nouveau_stub_takedown(struct drm_device *dev) {} +static uint64_t nouveau_stub_timer_read(struct drm_device *dev) { return 0; } + static int nouveau_init_engine_ptrs(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; @@ -104,6 +106,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->mc.init = nv04_mc_init; engine->mc.takedown = nv04_mc_takedown; engine->timer.init = nv04_timer_init; + engine->timer.read = nv04_timer_read; engine->timer.takedown = nv04_timer_takedown; engine->fb.init = nv04_fb_init; engine->fb.takedown = nv04_fb_takedown; @@ -130,6 +133,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->mc.init = nv04_mc_init; engine->mc.takedown = nv04_mc_takedown; engine->timer.init = nv04_timer_init; + engine->timer.read = nv04_timer_read; engine->timer.takedown = nv04_timer_takedown; engine->fb.init = nv10_fb_init; engine->fb.takedown = nv10_fb_takedown; @@ -156,6 +160,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->mc.init = nv04_mc_init; engine->mc.takedown = nv04_mc_takedown; engine->timer.init = nv04_timer_init; + engine->timer.read = nv04_timer_read; engine->timer.takedown = nv04_timer_takedown; engine->fb.init = nv10_fb_init; engine->fb.takedown = nv10_fb_takedown; @@ -182,6 +187,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->mc.init = nv04_mc_init; engine->mc.takedown = nv04_mc_takedown; engine->timer.init = nv04_timer_init; + engine->timer.read = nv04_timer_read; engine->timer.takedown = nv04_timer_takedown; engine->fb.init = nv10_fb_init; engine->fb.takedown = nv10_fb_takedown; @@ -208,6 +214,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->mc.init = nv40_mc_init; engine->mc.takedown = nv40_mc_takedown; engine->timer.init = nv04_timer_init; + engine->timer.read = nv04_timer_read; engine->timer.takedown = nv04_timer_takedown; engine->fb.init = nv40_fb_init; engine->fb.takedown = nv40_fb_takedown; @@ -235,6 +242,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->mc.init = nv50_mc_init; engine->mc.takedown = nv50_mc_takedown; engine->timer.init = nouveau_stub_init; + engine->timer.read = nouveau_stub_timer_read; engine->timer.takedown = nouveau_stub_takedown; engine->fb.init = nouveau_stub_init; engine->fb.takedown = nouveau_stub_takedown; diff --git a/shared-core/nv04_timer.c b/shared-core/nv04_timer.c index efe78da7..08a27f4f 100644 --- a/shared-core/nv04_timer.c +++ b/shared-core/nv04_timer.c @@ -17,6 +17,27 @@ nv04_timer_init(struct drm_device *dev) return 0; } +uint64_t +nv04_timer_read(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + uint32_t low; + /* From kmmio dumps on nv28 this looks like how the blob does this. + * It reads the high dword twice, before and after. + * The only explanation seems to be that the 64-bit timer counter + * advances between high and low dword reads and may corrupt the + * result. Not confirmed. + */ + uint32_t high2 = NV_READ(NV04_PTIMER_TIME_1); + uint32_t high1; + do { + high1 = high2; + low = NV_READ(NV04_PTIMER_TIME_0); + high2 = NV_READ(NV04_PTIMER_TIME_1); + } while(high1 != high2); + return (((uint64_t)high2) << 32) | (uint64_t)low; +} + void nv04_timer_takedown(struct drm_device *dev) { |