diff options
Diffstat (limited to 'drivers/char/drm/radeon_irq.c')
| -rw-r--r-- | drivers/char/drm/radeon_irq.c | 171 |
1 files changed, 88 insertions, 83 deletions
diff --git a/drivers/char/drm/radeon_irq.c b/drivers/char/drm/radeon_irq.c index 507d6b747a13..ee40d197deb7 100644 --- a/drivers/char/drm/radeon_irq.c +++ b/drivers/char/drm/radeon_irq.c @@ -35,61 +35,12 @@ #include "radeon_drm.h" #include "radeon_drv.h" -static void radeon_irq_set_state(struct drm_device *dev, u32 mask, int state) +static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t * dev_priv, + u32 mask) { - drm_radeon_private_t *dev_priv = dev->dev_private; - - if (state) - dev_priv->irq_enable_reg |= mask; - else - dev_priv->irq_enable_reg &= ~mask; - - RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg); -} - -int radeon_enable_vblank(struct drm_device *dev, int crtc) -{ - switch (crtc) { - case 0: - radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 1); - break; - case 1: - radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 1); - break; - default: - DRM_ERROR("tried to enable vblank on non-existent crtc %d\n", - crtc); - return EINVAL; - } - - return 0; -} - -void radeon_disable_vblank(struct drm_device *dev, int crtc) -{ - switch (crtc) { - case 0: - radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 0); - break; - case 1: - radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 0); - break; - default: - DRM_ERROR("tried to enable vblank on non-existent crtc %d\n", - crtc); - break; - } -} - -static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t * dev_priv) -{ - u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS) & - (RADEON_SW_INT_TEST | RADEON_CRTC_VBLANK_STAT | - RADEON_CRTC2_VBLANK_STAT); - + u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS) & mask; if (irqs) RADEON_WRITE(RADEON_GEN_INT_STATUS, irqs); - return irqs; } @@ -121,21 +72,39 @@ irqreturn_t radeon_driver_irq_handler(DRM_IRQ_ARGS) /* Only consider the bits we're interested in - others could be used * outside the DRM */ - stat = radeon_acknowledge_irqs(dev_priv); + stat = radeon_acknowledge_irqs(dev_priv, (RADEON_SW_INT_TEST_ACK | + RADEON_CRTC_VBLANK_STAT | + RADEON_CRTC2_VBLANK_STAT)); if (!stat) return IRQ_NONE; stat &= dev_priv->irq_enable_reg; /* SW interrupt */ - if (stat & RADEON_SW_INT_TEST) + if (stat & RADEON_SW_INT_TEST) { DRM_WAKEUP(&dev_priv->swi_queue); + } /* VBLANK interrupt */ - if (stat & RADEON_CRTC_VBLANK_STAT) - drm_handle_vblank(dev, 0); - if (stat & RADEON_CRTC2_VBLANK_STAT) - drm_handle_vblank(dev, 1); + if (stat & (RADEON_CRTC_VBLANK_STAT|RADEON_CRTC2_VBLANK_STAT)) { + int vblank_crtc = dev_priv->vblank_crtc; + + if ((vblank_crtc & + (DRM_RADEON_VBLANK_CRTC1 | DRM_RADEON_VBLANK_CRTC2)) == + (DRM_RADEON_VBLANK_CRTC1 | DRM_RADEON_VBLANK_CRTC2)) { + if (stat & RADEON_CRTC_VBLANK_STAT) + atomic_inc(&dev->vbl_received); + if (stat & RADEON_CRTC2_VBLANK_STAT) + atomic_inc(&dev->vbl_received2); + } else if (((stat & RADEON_CRTC_VBLANK_STAT) && + (vblank_crtc & DRM_RADEON_VBLANK_CRTC1)) || + ((stat & RADEON_CRTC2_VBLANK_STAT) && + (vblank_crtc & DRM_RADEON_VBLANK_CRTC2))) + atomic_inc(&dev->vbl_received); + + DRM_WAKEUP(&dev->vbl_queue); + drm_vbl_send_signals(dev); + } return IRQ_HANDLED; } @@ -175,27 +144,54 @@ static int radeon_wait_irq(struct drm_device * dev, int swi_nr) return ret; } -u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc) +static int radeon_driver_vblank_do_wait(struct drm_device * dev, + unsigned int *sequence, int crtc) { - drm_radeon_private_t *dev_priv = dev->dev_private; - u32 crtc_cnt_reg, crtc_status_reg; - + drm_radeon_private_t *dev_priv = + (drm_radeon_private_t *) dev->dev_private; + unsigned int cur_vblank; + int ret = 0; + int ack = 0; + atomic_t *counter; if (!dev_priv) { DRM_ERROR("called with no initialization\n"); return -EINVAL; } - if (crtc == 0) { - crtc_cnt_reg = RADEON_CRTC_CRNT_FRAME; - crtc_status_reg = RADEON_CRTC_STATUS; - } else if (crtc == 1) { - crtc_cnt_reg = RADEON_CRTC2_CRNT_FRAME; - crtc_status_reg = RADEON_CRTC2_STATUS; - } else { + if (crtc == DRM_RADEON_VBLANK_CRTC1) { + counter = &dev->vbl_received; + ack |= RADEON_CRTC_VBLANK_STAT; + } else if (crtc == DRM_RADEON_VBLANK_CRTC2) { + counter = &dev->vbl_received2; + ack |= RADEON_CRTC2_VBLANK_STAT; + } else return -EINVAL; - } - return RADEON_READ(crtc_cnt_reg) + (RADEON_READ(crtc_status_reg) & 1); + radeon_acknowledge_irqs(dev_priv, ack); + + dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE; + + /* Assume that the user has missed the current sequence number + * by about a day rather than she wants to wait for years + * using vertical blanks... + */ + DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ, + (((cur_vblank = atomic_read(counter)) + - *sequence) <= (1 << 23))); + + *sequence = cur_vblank; + + return ret; +} + +int radeon_driver_vblank_wait(struct drm_device *dev, unsigned int *sequence) +{ + return radeon_driver_vblank_do_wait(dev, sequence, DRM_RADEON_VBLANK_CRTC1); +} + +int radeon_driver_vblank_wait2(struct drm_device *dev, unsigned int *sequence) +{ + return radeon_driver_vblank_do_wait(dev, sequence, DRM_RADEON_VBLANK_CRTC2); } /* Needs the lock as it touches the ring. @@ -238,6 +234,21 @@ int radeon_irq_wait(struct drm_device *dev, void *data, struct drm_file *file_pr return radeon_wait_irq(dev, irqwait->irq_seq); } +void radeon_enable_interrupt(struct drm_device *dev) +{ + drm_radeon_private_t *dev_priv = (drm_radeon_private_t *) dev->dev_private; + + dev_priv->irq_enable_reg = RADEON_SW_INT_ENABLE; + if (dev_priv->vblank_crtc & DRM_RADEON_VBLANK_CRTC1) + dev_priv->irq_enable_reg |= RADEON_CRTC_VBLANK_MASK; + + if (dev_priv->vblank_crtc & DRM_RADEON_VBLANK_CRTC2) + dev_priv->irq_enable_reg |= RADEON_CRTC2_VBLANK_MASK; + + RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg); + dev_priv->irq_enabled = 1; +} + /* drm_dma.h hooks */ void radeon_driver_irq_preinstall(struct drm_device * dev) @@ -249,27 +260,20 @@ void radeon_driver_irq_preinstall(struct drm_device * dev) RADEON_WRITE(RADEON_GEN_INT_CNTL, 0); /* Clear bits if they're already high */ - radeon_acknowledge_irqs(dev_priv); + radeon_acknowledge_irqs(dev_priv, (RADEON_SW_INT_TEST_ACK | + RADEON_CRTC_VBLANK_STAT | + RADEON_CRTC2_VBLANK_STAT)); } -int radeon_driver_irq_postinstall(struct drm_device * dev) +void radeon_driver_irq_postinstall(struct drm_device * dev) { drm_radeon_private_t *dev_priv = (drm_radeon_private_t *) dev->dev_private; - int ret; atomic_set(&dev_priv->swi_emitted, 0); DRM_INIT_WAITQUEUE(&dev_priv->swi_queue); - ret = drm_vblank_init(dev, 2); - if (ret) - return ret; - - dev->max_vblank_count = 0x001fffff; - - radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1); - - return 0; + radeon_enable_interrupt(dev); } void radeon_driver_irq_uninstall(struct drm_device * dev) @@ -311,5 +315,6 @@ int radeon_vblank_crtc_set(struct drm_device *dev, int64_t value) return -EINVAL; } dev_priv->vblank_crtc = (unsigned int)value; + radeon_enable_interrupt(dev); return 0; } |