diff options
Diffstat (limited to 'drivers/gpu/drm/mga')
| -rw-r--r-- | drivers/gpu/drm/mga/mga_drv.c | 29 | ||||
| -rw-r--r-- | drivers/gpu/drm/mga/mga_drv.h | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/mga/mga_irq.c | 74 | ||||
| -rw-r--r-- | drivers/gpu/drm/mga/mga_state.c | 2 |
4 files changed, 74 insertions, 37 deletions
diff --git a/drivers/gpu/drm/mga/mga_drv.c b/drivers/gpu/drm/mga/mga_drv.c index 5572939fc7d1..97ee566ef749 100644 --- a/drivers/gpu/drm/mga/mga_drv.c +++ b/drivers/gpu/drm/mga/mga_drv.c @@ -45,15 +45,16 @@ static struct pci_device_id pciidlist[] = { static struct drm_driver driver = { .driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | - DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | - DRIVER_IRQ_VBL, + DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED, .dev_priv_size = sizeof(drm_mga_buf_priv_t), .load = mga_driver_load, .unload = mga_driver_unload, .lastclose = mga_driver_lastclose, .dma_quiescent = mga_driver_dma_quiescent, .device_is_agp = mga_driver_device_is_agp, - .vblank_wait = mga_driver_vblank_wait, + .get_vblank_counter = mga_get_vblank_counter, + .enable_vblank = mga_enable_vblank, + .disable_vblank = mga_disable_vblank, .irq_preinstall = mga_driver_irq_preinstall, .irq_postinstall = mga_driver_irq_postinstall, .irq_uninstall = mga_driver_irq_uninstall, @@ -64,20 +65,20 @@ static struct drm_driver driver = { .ioctls = mga_ioctls, .dma_ioctl = mga_dma_buffers, .fops = { - .owner = THIS_MODULE, - .open = drm_open, - .release = drm_release, - .ioctl = drm_ioctl, - .mmap = drm_mmap, - .poll = drm_poll, - .fasync = drm_fasync, + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .ioctl = drm_ioctl, + .mmap = drm_mmap, + .poll = drm_poll, + .fasync = drm_fasync, #ifdef CONFIG_COMPAT - .compat_ioctl = mga_compat_ioctl, + .compat_ioctl = mga_compat_ioctl, #endif - }, + }, .pci_driver = { - .name = DRIVER_NAME, - .id_table = pciidlist, + .name = DRIVER_NAME, + .id_table = pciidlist, }, .name = DRIVER_NAME, diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h index f6ebd24bd587..88257c276eb9 100644 --- a/drivers/gpu/drm/mga/mga_drv.h +++ b/drivers/gpu/drm/mga/mga_drv.h @@ -120,6 +120,7 @@ typedef struct drm_mga_private { u32 clear_cmd; u32 maccess; + atomic_t vbl_received; /**< Number of vblanks received. */ wait_queue_head_t fence_queue; atomic_t last_fence_retired; u32 next_fence_to_post; @@ -181,11 +182,14 @@ extern int mga_warp_install_microcode(drm_mga_private_t * dev_priv); extern int mga_warp_init(drm_mga_private_t * dev_priv); /* mga_irq.c */ +extern int mga_enable_vblank(struct drm_device *dev, int crtc); +extern void mga_disable_vblank(struct drm_device *dev, int crtc); +extern u32 mga_get_vblank_counter(struct drm_device *dev, int crtc); extern int mga_driver_fence_wait(struct drm_device * dev, unsigned int *sequence); extern int mga_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence); extern irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS); extern void mga_driver_irq_preinstall(struct drm_device * dev); -extern void mga_driver_irq_postinstall(struct drm_device * dev); +extern int mga_driver_irq_postinstall(struct drm_device *dev); extern void mga_driver_irq_uninstall(struct drm_device * dev); extern long mga_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c index 9302cb8f0f83..bab42f41188b 100644 --- a/drivers/gpu/drm/mga/mga_irq.c +++ b/drivers/gpu/drm/mga/mga_irq.c @@ -1,5 +1,6 @@ /* mga_irq.c -- IRQ handling for radeon -*- linux-c -*- - * + */ +/* * Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. * * The Weather Channel (TM) funded Tungsten Graphics to develop the @@ -35,6 +36,18 @@ #include "mga_drm.h" #include "mga_drv.h" +u32 mga_get_vblank_counter(struct drm_device *dev, int crtc) +{ + const drm_mga_private_t *const dev_priv = + (drm_mga_private_t *) dev->dev_private; + + if (crtc != 0) + return 0; + + return atomic_read(&dev_priv->vbl_received); +} + + irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) { struct drm_device *dev = (struct drm_device *) arg; @@ -47,9 +60,8 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) /* VBLANK interrupt */ if (status & MGA_VLINEPEN) { MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR); - atomic_inc(&dev->vbl_received); - DRM_WAKEUP(&dev->vbl_queue); - drm_vbl_send_signals(dev); + atomic_inc(&dev_priv->vbl_received); + drm_handle_vblank(dev, 0); handled = 1; } @@ -58,6 +70,7 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) const u32 prim_start = MGA_READ(MGA_PRIMADDRESS); const u32 prim_end = MGA_READ(MGA_PRIMEND); + MGA_WRITE(MGA_ICLEAR, MGA_SOFTRAPICLR); /* In addition to clearing the interrupt-pending bit, we @@ -72,28 +85,39 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) handled = 1; } - if (handled) { + if (handled) return IRQ_HANDLED; - } return IRQ_NONE; } -int mga_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence) +int mga_enable_vblank(struct drm_device *dev, int crtc) { - unsigned int cur_vblank; - int ret = 0; + drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; - /* 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(&dev->vbl_received)) - - *sequence) <= (1 << 23))); + if (crtc != 0) { + DRM_ERROR("tried to enable vblank on non-existent crtc %d\n", + crtc); + return 0; + } - *sequence = cur_vblank; + MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN); + return 0; +} - return ret; + +void mga_disable_vblank(struct drm_device *dev, int crtc) +{ + if (crtc != 0) { + DRM_ERROR("tried to disable vblank on non-existent crtc %d\n", + crtc); + } + + /* Do *NOT* disable the vertical refresh interrupt. MGA doesn't have + * a nice hardware counter that tracks the number of refreshes when + * the interrupt is disabled, and the kernel doesn't know the refresh + * rate to calculate an estimate. + */ + /* MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN); */ } int mga_driver_fence_wait(struct drm_device * dev, unsigned int *sequence) @@ -125,14 +149,22 @@ void mga_driver_irq_preinstall(struct drm_device * dev) MGA_WRITE(MGA_ICLEAR, ~0); } -void mga_driver_irq_postinstall(struct drm_device * dev) +int mga_driver_irq_postinstall(struct drm_device *dev) { drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; + int ret; + + ret = drm_vblank_init(dev, 1); + if (ret) + return ret; DRM_INIT_WAITQUEUE(&dev_priv->fence_queue); - /* Turn on vertical blank interrupt and soft trap interrupt. */ - MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN); + /* Turn on soft trap interrupt. Vertical blank interrupts are enabled + * in mga_enable_vblank. + */ + MGA_WRITE(MGA_IEN, MGA_SOFTRAPEN); + return 0; } void mga_driver_irq_uninstall(struct drm_device * dev) diff --git a/drivers/gpu/drm/mga/mga_state.c b/drivers/gpu/drm/mga/mga_state.c index d3f8aade07b3..b710fab21cb3 100644 --- a/drivers/gpu/drm/mga/mga_state.c +++ b/drivers/gpu/drm/mga/mga_state.c @@ -1022,7 +1022,7 @@ static int mga_getparam(struct drm_device *dev, void *data, struct drm_file *fil switch (param->param) { case MGA_PARAM_IRQ_NR: - value = dev->irq; + value = drm_dev_to_irq(dev); break; case MGA_PARAM_CARD_TYPE: value = dev_priv->chipset; |