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-rw-r--r--drivers/char/drm/drm.h17
-rw-r--r--drivers/char/drm/drmP.h91
-rw-r--r--drivers/char/drm/drm_irq.c381
-rw-r--r--drivers/char/drm/i915_dma.c160
-rw-r--r--drivers/char/drm/i915_drm.h45
-rw-r--r--drivers/char/drm/i915_drv.c8
-rw-r--r--drivers/char/drm/i915_drv.h101
-rw-r--r--drivers/char/drm/i915_irq.c597
-rw-r--r--drivers/char/drm/mga_drv.c7
-rw-r--r--drivers/char/drm/mga_drv.h6
-rw-r--r--drivers/char/drm/mga_irq.c69
-rw-r--r--drivers/char/drm/r128_drv.c7
-rw-r--r--drivers/char/drm/r128_drv.h9
-rw-r--r--drivers/char/drm/r128_irq.c55
-rw-r--r--drivers/char/drm/radeon_drv.c8
-rw-r--r--drivers/char/drm/radeon_drv.h19
-rw-r--r--drivers/char/drm/radeon_irq.c171
-rw-r--r--drivers/char/drm/via_drv.c6
-rw-r--r--drivers/char/drm/via_drv.h7
-rw-r--r--drivers/char/drm/via_irq.c81
20 files changed, 1372 insertions, 473 deletions
diff --git a/drivers/char/drm/drm.h b/drivers/char/drm/drm.h
index 3a05c6d5ebe..6874f31ca8c 100644
--- a/drivers/char/drm/drm.h
+++ b/drivers/char/drm/drm.h
@@ -471,6 +471,7 @@ struct drm_irq_busid {
enum drm_vblank_seq_type {
_DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
_DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
+ _DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */
_DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
_DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
_DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking */
@@ -503,6 +504,21 @@ union drm_wait_vblank {
struct drm_wait_vblank_reply reply;
};
+enum drm_modeset_ctl_cmd {
+ _DRM_PRE_MODESET = 1,
+ _DRM_POST_MODESET = 2,
+};
+
+/**
+ * DRM_IOCTL_MODESET_CTL ioctl argument type
+ *
+ * \sa drmModesetCtl().
+ */
+struct drm_modeset_ctl {
+ unsigned long arg;
+ enum drm_modeset_ctl_cmd cmd;
+};
+
/**
* DRM_IOCTL_AGP_ENABLE ioctl argument type.
*
@@ -587,6 +603,7 @@ struct drm_set_version {
#define DRM_IOCTL_GET_CLIENT DRM_IOWR(0x05, struct drm_client)
#define DRM_IOCTL_GET_STATS DRM_IOR( 0x06, struct drm_stats)
#define DRM_IOCTL_SET_VERSION DRM_IOWR(0x07, struct drm_set_version)
+#define DRM_IOCTL_MODESET_CTL DRM_IOW(0x08, struct drm_modeset_ctl)
#define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, struct drm_unique)
#define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, struct drm_auth)
diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
index 5446235094d..ecee3547a13 100644
--- a/drivers/char/drm/drmP.h
+++ b/drivers/char/drm/drmP.h
@@ -100,10 +100,8 @@ struct drm_device;
#define DRIVER_HAVE_DMA 0x20
#define DRIVER_HAVE_IRQ 0x40
#define DRIVER_IRQ_SHARED 0x80
-#define DRIVER_IRQ_VBL 0x100
#define DRIVER_DMA_QUEUE 0x200
#define DRIVER_FB_DMA 0x400
-#define DRIVER_IRQ_VBL2 0x800
/***********************************************************************/
/** \name Begin the DRM... */
@@ -579,10 +577,52 @@ struct drm_driver {
int (*context_dtor) (struct drm_device *dev, int context);
int (*kernel_context_switch) (struct drm_device *dev, int old,
int new);
- void (*kernel_context_switch_unlock) (struct drm_device *dev);
- int (*vblank_wait) (struct drm_device *dev, unsigned int *sequence);
- int (*vblank_wait2) (struct drm_device *dev, unsigned int *sequence);
- int (*dri_library_name) (struct drm_device *dev, char *buf);
+ void (*kernel_context_switch_unlock) (struct drm_device * dev);
+ /**
+ * get_vblank_counter - get raw hardware vblank counter
+ * @dev: DRM device
+ * @crtc: counter to fetch
+ *
+ * Driver callback for fetching a raw hardware vblank counter
+ * for @crtc. If a device doesn't have a hardware counter, the
+ * driver can simply return the value of drm_vblank_count and
+ * make the enable_vblank() and disable_vblank() hooks into no-ops,
+ * leaving interrupts enabled at all times.
+ *
+ * Wraparound handling and loss of events due to modesetting is dealt
+ * with in the DRM core code.
+ *
+ * RETURNS
+ * Raw vblank counter value.
+ */
+ u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
+
+ /**
+ * enable_vblank - enable vblank interrupt events
+ * @dev: DRM device
+ * @crtc: which irq to enable
+ *
+ * Enable vblank interrupts for @crtc. If the device doesn't have
+ * a hardware vblank counter, this routine should be a no-op, since
+ * interrupts will have to stay on to keep the count accurate.
+ *
+ * RETURNS
+ * Zero on success, appropriate errno if the given @crtc's vblank
+ * interrupt cannot be enabled.
+ */
+ int (*enable_vblank) (struct drm_device *dev, int crtc);
+
+ /**
+ * disable_vblank - disable vblank interrupt events
+ * @dev: DRM device
+ * @crtc: which irq to enable
+ *
+ * Disable vblank interrupts for @crtc. If the device doesn't have
+ * a hardware vblank counter, this routine should be a no-op, since
+ * interrupts will have to stay on to keep the count accurate.
+ */
+ void (*disable_vblank) (struct drm_device *dev, int crtc);
+ int (*dri_library_name) (struct drm_device *dev, char * buf);
/**
* Called by \c drm_device_is_agp. Typically used to determine if a
@@ -601,7 +641,7 @@ struct drm_driver {
irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
void (*irq_preinstall) (struct drm_device *dev);
- void (*irq_postinstall) (struct drm_device *dev);
+ int (*irq_postinstall) (struct drm_device *dev);
void (*irq_uninstall) (struct drm_device *dev);
void (*reclaim_buffers) (struct drm_device *dev,
struct drm_file * file_priv);
@@ -730,13 +770,21 @@ struct drm_device {
/** \name VBLANK IRQ support */
/*@{ */
- wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
- atomic_t vbl_received;
- atomic_t vbl_received2; /**< number of secondary VBLANK interrupts */
+ wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
+ atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
spinlock_t vbl_lock;
- struct list_head vbl_sigs; /**< signal list to send on VBLANK */
- struct list_head vbl_sigs2; /**< signals to send on secondary VBLANK */
- unsigned int vbl_pending;
+ struct list_head *vbl_sigs; /**< signal list to send on VBLANK */
+ atomic_t vbl_signal_pending; /* number of signals pending on all crtcs*/
+ atomic_t *vblank_refcount; /* number of users of vblank interrupts per crtc */
+ u32 *last_vblank; /* protected by dev->vbl_lock, used */
+ /* for wraparound handling */
+ u32 *vblank_offset; /* used to track how many vblanks */
+ int *vblank_enabled; /* so we don't call enable more than
+ once per disable */
+ u32 *vblank_premodeset; /* were lost during modeset */
+ struct timer_list vblank_disable_timer;
+
+ unsigned long max_vblank_count; /**< size of vblank counter register */
spinlock_t tasklet_lock; /**< For drm_locked_tasklet */
void (*locked_tasklet_func)(struct drm_device *dev);
@@ -756,6 +804,7 @@ struct drm_device {
#ifdef __alpha__
struct pci_controller *hose;
#endif
+ int num_crtcs; /**< Number of CRTCs on this device */
struct drm_sg_mem *sg; /**< Scatter gather memory */
void *dev_private; /**< device private data */
struct drm_sigdata sigdata; /**< For block_all_signals */
@@ -990,11 +1039,19 @@ extern void drm_driver_irq_preinstall(struct drm_device *dev);
extern void drm_driver_irq_postinstall(struct drm_device *dev);
extern void drm_driver_irq_uninstall(struct drm_device *dev);
-extern int drm_wait_vblank(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
-extern void drm_vbl_send_signals(struct drm_device *dev);
+extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
+extern int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *filp);
+extern int drm_vblank_wait(struct drm_device * dev, unsigned int *vbl_seq);
extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
+extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
+extern void drm_update_vblank_count(struct drm_device *dev, int crtc);
+extern void drm_handle_vblank(struct drm_device *dev, int crtc);
+extern int drm_vblank_get(struct drm_device *dev, int crtc);
+extern void drm_vblank_put(struct drm_device *dev, int crtc);
+
+ /* Modesetting support */
+extern int drm_modeset_ctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
/* AGP/GART support (drm_agpsupport.h) */
extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
diff --git a/drivers/char/drm/drm_irq.c b/drivers/char/drm/drm_irq.c
index 089c015c01d..286f9d61e7d 100644
--- a/drivers/char/drm/drm_irq.c
+++ b/drivers/char/drm/drm_irq.c
@@ -71,6 +71,117 @@ int drm_irq_by_busid(struct drm_device *dev, void *data,
return 0;
}
+static void vblank_disable_fn(unsigned long arg)
+{
+ struct drm_device *dev = (struct drm_device *)arg;
+ unsigned long irqflags;
+ int i;
+
+ for (i = 0; i < dev->num_crtcs; i++) {
+ spin_lock_irqsave(&dev->vbl_lock, irqflags);
+ if (atomic_read(&dev->vblank_refcount[i]) == 0 &&
+ dev->vblank_enabled[i]) {
+ dev->driver->disable_vblank(dev, i);
+ dev->vblank_enabled[i] = 0;
+ }
+ spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+ }
+}
+
+static void drm_vblank_cleanup(struct drm_device *dev)
+{
+ /* Bail if the driver didn't call drm_vblank_init() */
+ if (dev->num_crtcs == 0)
+ return;
+
+ del_timer(&dev->vblank_disable_timer);
+
+ vblank_disable_fn((unsigned long)dev);
+
+ drm_free(dev->vbl_queue, sizeof(*dev->vbl_queue) * dev->num_crtcs,
+ DRM_MEM_DRIVER);
+ drm_free(dev->vbl_sigs, sizeof(*dev->vbl_sigs) * dev->num_crtcs,
+ DRM_MEM_DRIVER);
+ drm_free(dev->_vblank_count, sizeof(*dev->_vblank_count) *
+ dev->num_crtcs, DRM_MEM_DRIVER);
+ drm_free(dev->vblank_refcount, sizeof(*dev->vblank_refcount) *
+ dev->num_crtcs, DRM_MEM_DRIVER);
+ drm_free(dev->vblank_enabled, sizeof(*dev->vblank_enabled) *
+ dev->num_crtcs, DRM_MEM_DRIVER);
+ drm_free(dev->last_vblank, sizeof(*dev->last_vblank) * dev->num_crtcs,
+ DRM_MEM_DRIVER);
+ drm_free(dev->vblank_premodeset, sizeof(*dev->vblank_premodeset) *
+ dev->num_crtcs, DRM_MEM_DRIVER);
+ drm_free(dev->vblank_offset, sizeof(*dev->vblank_offset) * dev->num_crtcs,
+ DRM_MEM_DRIVER);
+
+ dev->num_crtcs = 0;
+}
+
+int drm_vblank_init(struct drm_device *dev, int num_crtcs)
+{
+ int i, ret = -ENOMEM;
+
+ setup_timer(&dev->vblank_disable_timer, vblank_disable_fn,
+ (unsigned long)dev);
+ spin_lock_init(&dev->vbl_lock);
+ atomic_set(&dev->vbl_signal_pending, 0);
+ dev->num_crtcs = num_crtcs;
+
+ dev->vbl_queue = drm_alloc(sizeof(wait_queue_head_t) * num_crtcs,
+ DRM_MEM_DRIVER);
+ if (!dev->vbl_queue)
+ goto err;
+
+ dev->vbl_sigs = drm_alloc(sizeof(struct list_head) * num_crtcs,
+ DRM_MEM_DRIVER);
+ if (!dev->vbl_sigs)
+ goto err;
+
+ dev->_vblank_count = drm_alloc(sizeof(atomic_t) * num_crtcs,
+ DRM_MEM_DRIVER);
+ if (!dev->_vblank_count)
+ goto err;
+
+ dev->vblank_refcount = drm_alloc(sizeof(atomic_t) * num_crtcs,
+ DRM_MEM_DRIVER);
+ if (!dev->vblank_refcount)
+ goto err;
+
+ dev->vblank_enabled = drm_calloc(num_crtcs, sizeof(int),
+ DRM_MEM_DRIVER);
+ if (!dev->vblank_enabled)
+ goto err;
+
+ dev->last_vblank = drm_calloc(num_crtcs, sizeof(u32), DRM_MEM_DRIVER);
+ if (!dev->last_vblank)
+ goto err;
+
+ dev->vblank_premodeset = drm_calloc(num_crtcs, sizeof(u32),
+ DRM_MEM_DRIVER);
+ if (!dev->vblank_premodeset)
+ goto err;
+
+ dev->vblank_offset = drm_calloc(num_crtcs, sizeof(u32), DRM_MEM_DRIVER);
+ if (!dev->vblank_offset)
+ goto err;
+
+ /* Zero per-crtc vblank stuff */
+ for (i = 0; i < num_crtcs; i++) {
+ init_waitqueue_head(&dev->vbl_queue[i]);
+ INIT_LIST_HEAD(&dev->vbl_sigs[i]);
+ atomic_set(&dev->_vblank_count[i], 0);
+ atomic_set(&dev->vblank_refcount[i], 0);
+ }
+
+ return 0;
+
+err:
+ drm_vblank_cleanup(dev);
+ return ret;
+}
+EXPORT_SYMBOL(drm_vblank_init);
+
/**
* Install IRQ handler.
*
@@ -109,17 +220,6 @@ static int drm_irq_install(struct drm_device * dev)
DRM_DEBUG("irq=%d\n", dev->irq);
- if (drm_core_check_feature(dev, DRIVER_IRQ_VBL)) {
- init_waitqueue_head(&dev->vbl_queue);
-
- spin_lock_init(&dev->vbl_lock);
-
- INIT_LIST_HEAD(&dev->vbl_sigs);
- INIT_LIST_HEAD(&dev->vbl_sigs2);
-
- dev->vbl_pending = 0;
- }
-
/* Before installing handler */
dev->driver->irq_preinstall(dev);
@@ -137,9 +237,14 @@ static int drm_irq_install(struct drm_device * dev)
}
/* After installing handler */
- dev->driver->irq_postinstall(dev);
+ ret = dev->driver->irq_postinstall(dev);
+ if (ret < 0) {
+ mutex_lock(&dev->struct_mutex);
+ dev->irq_enabled = 0;
+ mutex_unlock(&dev->struct_mutex);
+ }
- return 0;
+ return ret;
}
/**
@@ -170,6 +275,8 @@ int drm_irq_uninstall(struct drm_device * dev)
free_irq(dev->irq, dev);
+ drm_vblank_cleanup(dev);
+
dev->locked_tasklet_func = NULL;
return 0;
@@ -214,6 +321,148 @@ int drm_control(struct drm_device *dev, void *data,
}
/**
+ * drm_vblank_count - retrieve "cooked" vblank counter value
+ * @dev: DRM device
+ * @crtc: which counter to retrieve
+ *
+ * Fetches the "cooked" vblank count value that represents the number of
+ * vblank events since the system was booted, including lost events due to
+ * modesetting activity.
+ */
+u32 drm_vblank_count(struct drm_device *dev, int crtc)
+{
+ return atomic_read(&dev->_vblank_count[crtc]) +
+ dev->vblank_offset[crtc];
+}
+EXPORT_SYMBOL(drm_vblank_count);
+
+/**
+ * drm_update_vblank_count - update the master vblank counter
+ * @dev: DRM device
+ * @crtc: counter to update
+ *
+ * Call back into the driver to update the appropriate vblank counter
+ * (specified by @crtc). Deal with wraparound, if it occurred, and
+ * update the last read value so we can deal with wraparound on the next
+ * call if necessary.
+ */
+void drm_update_vblank_count(struct drm_device *dev, int crtc)
+{
+ unsigned long irqflags;
+ u32 cur_vblank, diff;
+
+ /*
+ * Interrupts were disabled prior to this call, so deal with counter
+ * wrap if needed.
+ * NOTE! It's possible we lost a full dev->max_vblank_count events
+ * here if the register is small or we had vblank interrupts off for
+ * a long time.
+ */
+ cur_vblank = dev->driver->get_vblank_counter(dev, crtc);
+ spin_lock_irqsave(&dev->vbl_lock, irqflags);
+ if (cur_vblank < dev->last_vblank[crtc]) {
+ diff = dev->max_vblank_count -
+ dev->last_vblank[crtc];
+ diff += cur_vblank;
+ } else {
+ diff = cur_vblank - dev->last_vblank[crtc];
+ }
+ dev->last_vblank[crtc] = cur_vblank;
+ spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+
+ atomic_add(diff, &dev->_vblank_count[crtc]);
+}
+EXPORT_SYMBOL(drm_update_vblank_count);
+
+/**
+ * drm_vblank_get - get a reference count on vblank events
+ * @dev: DRM device
+ * @crtc: which CRTC to own
+ *
+ * Acquire a reference count on vblank events to avoid having them disabled
+ * while in use. Note callers will probably want to update the master counter
+ * using drm_update_vblank_count() above before calling this routine so that
+ * wakeups occur on the right vblank event.
+ *
+ * RETURNS
+ * Zero on success, nonzero on failure.
+ */
+int drm_vblank_get(struct drm_device *dev, int crtc)
+{
+ unsigned long irqflags;
+ int ret = 0;
+
+ spin_lock_irqsave(&dev->vbl_lock, irqflags);
+ /* Going from 0->1 means we have to enable interrupts again */
+ if (atomic_add_return(1, &dev->vblank_refcount[crtc]) == 1 &&
+ !dev->vblank_enabled[crtc]) {
+ ret = dev->driver->enable_vblank(dev, crtc);
+ if (ret)
+ atomic_dec(&dev->vblank_refcount[crtc]);
+ else
+ dev->vblank_enabled[crtc] = 1;
+ }
+ spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+
+ return ret;
+}
+EXPORT_SYMBOL(drm_vblank_get);
+
+/**
+ * drm_vblank_put - give up ownership of vblank events
+ * @dev: DRM device
+ * @crtc: which counter to give up
+ *
+ * Release ownership of a given vblank counter, turning off interrupts
+ * if possible.
+ */
+void drm_vblank_put(struct drm_device *dev, int crtc)
+{
+ /* Last user schedules interrupt disable */
+ if (atomic_dec_and_test(&dev->vblank_refcount[crtc]))
+ mod_timer(&dev->vblank_disable_timer, jiffies + 5*DRM_HZ);
+}
+EXPORT_SYMBOL(drm_vblank_put);
+
+/**
+ * drm_modeset_ctl - handle vblank event counter changes across mode switch
+ * @DRM_IOCTL_ARGS: standard ioctl arguments
+ *
+ * Applications should call the %_DRM_PRE_MODESET and %_DRM_POST_MODESET
+ * ioctls around modesetting so that any lost vblank events are accounted for.
+ */
+int drm_modeset_ctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_modeset_ctl *modeset = data;
+ int crtc, ret = 0;
+ u32 new;
+
+ crtc = modeset->arg;
+ if (crtc >= dev->num_crtcs) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ switch (modeset->cmd) {
+ case _DRM_PRE_MODESET:
+ dev->vblank_premodeset[crtc] =
+ dev->driver->get_vblank_counter(dev, crtc);
+ break;
+ case _DRM_POST_MODESET:
+ new = dev->driver->get_vblank_counter(dev, crtc);
+ dev->vblank_offset[crtc] = dev->vblank_premodeset[crtc] - new;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+out:
+ return ret;
+}
+
+/**
* Wait for VBLANK.
*
* \param inode device inode.
@@ -232,12 +481,13 @@ int drm_control(struct drm_device *dev, void *data,
*
* If a signal is not requested, then calls vblank_wait().
*/
-int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_priv)
+int drm_wait_vblank(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
union drm_wait_vblank *vblwait = data;
struct timeval now;
int ret = 0;
- unsigned int flags, seq;
+ unsigned int flags, seq, crtc;
if ((!dev->irq) || (!dev->irq_enabled))
return -EINVAL;
@@ -251,13 +501,13 @@ int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_pr
}
flags = vblwait->request.type & _DRM_VBLANK_FLAGS_MASK;
+ crtc = flags & _DRM_VBLANK_SECONDARY ? 1 : 0;
- if (!drm_core_check_feature(dev, (flags & _DRM_VBLANK_SECONDARY) ?
- DRIVER_IRQ_VBL2 : DRIVER_IRQ_VBL))
+ if (crtc >= dev->num_crtcs)
return -EINVAL;
- seq = atomic_read((flags & _DRM_VBLANK_SECONDARY) ? &dev->vbl_received2
- : &dev->vbl_received);
+ drm_update_vblank_count(dev, crtc);
+ seq = drm_vblank_count(dev, crtc);
switch (vblwait->request.type & _DRM_VBLANK_TYPES_MASK) {
case _DRM_VBLANK_RELATIVE:
@@ -276,8 +526,7 @@ int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_pr
if (flags & _DRM_VBLANK_SIGNAL) {
unsigned long irqflags;
- struct list_head *vbl_sigs = (flags & _DRM_VBLANK_SECONDARY)
- ? &dev->vbl_sigs2 : &dev->vbl_sigs;
+ struct list_head *vbl_sigs = &dev->vbl_sigs[crtc];
struct drm_vbl_sig *vbl_sig;
spin_lock_irqsave(&dev->vbl_lock, irqflags);
@@ -298,22 +547,26 @@ int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_pr
}
}
- if (dev->vbl_pending >= 100) {
+ if (atomic_read(&dev->vbl_signal_pending) >= 100) {
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
return -EBUSY;
}
- dev->vbl_pending++;
-
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
- if (!
- (vbl_sig =
- drm_alloc(sizeof(struct drm_vbl_sig), DRM_MEM_DRIVER))) {
+ vbl_sig = drm_calloc(1, sizeof(struct drm_vbl_sig),
+ DRM_MEM_DRIVER);
+ if (!vbl_sig)
return -ENOMEM;
+
+ ret = drm_vblank_get(dev, crtc);
+ if (ret) {
+ drm_free(vbl_sig, sizeof(struct drm_vbl_sig),
+ DRM_MEM_DRIVER);
+ return ret;
}
- memset((void *)vbl_sig, 0, sizeof(*vbl_sig));
+ atomic_inc(&dev->vbl_signal_pending);
vbl_sig->sequence = vblwait->request.sequence;
vbl_sig->info.si_signo = vblwait->request.signal;
@@ -327,17 +580,20 @@ int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_pr
vblwait->reply.sequence = seq;
} else {
- if (flags & _DRM_VBLANK_SECONDARY) {
- if (dev->driver->vblank_wait2)
- ret = dev->driver->vblank_wait2(dev, &vblwait->request.sequence);
- } else if (dev->driver->vblank_wait)
- ret =
- dev->driver->vblank_wait(dev,
- &vblwait->request.sequence);
-
+ unsigned long cur_vblank;
+
+ ret = drm_vblank_get(dev, crtc);
+ if (ret)
+ return ret;
+ DRM_WAIT_ON(ret, dev->vbl_queue[crtc], 3 * DRM_HZ,
+ (((cur_vblank = drm_vblank_count(dev, crtc))
+ - vblwait->request.sequence) <= (1 << 23)));
+ drm_vblank_put(dev, crtc);
do_gettimeofday(&now);
+
vblwait->reply.tval_sec = now.tv_sec;
vblwait->reply.tval_usec = now.tv_usec;
+ vblwait->reply.sequence = cur_vblank;
}
done:
@@ -348,44 +604,57 @@ int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_pr
* Send the VBLANK signals.
*
* \param dev DRM device.
+ * \param crtc CRTC where the vblank event occurred
*
* Sends a signal for each task in drm_device::vbl_sigs and empties the list.
*
* If a signal is not requested, then calls vblank_wait().
*/
-void drm_vbl_send_signals(struct drm_device * dev)
+static void drm_vbl_send_signals(struct drm_device * dev, int crtc)
{
+ struct drm_vbl_sig *vbl_sig, *tmp;
+ struct list_head *vbl_sigs;
+ unsigned int vbl_seq;
unsigned long flags;
- int i;
spin_lock_irqsave(&dev->vbl_lock, flags);
- for (i = 0; i < 2; i++) {
- struct drm_vbl_sig *vbl_sig, *tmp;
- struct list_head *vbl_sigs = i ? &dev->vbl_sigs2 : &dev->vbl_sigs;
- unsigned int vbl_seq = atomic_read(i ? &dev->vbl_received2 :
- &dev->vbl_received);
+ vbl_sigs = &dev->vbl_sigs[crtc];
+ vbl_seq = drm_vblank_count(dev, crtc);
- list_for_each_entry_safe(vbl_sig, tmp, vbl_sigs, head) {
- if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
- vbl_sig->info.si_code = vbl_seq;
- send_sig_info(vbl_sig->info.si_signo,
- &vbl_sig->info, vbl_sig->task);
+ list_for_each_entry_safe(vbl_sig, tmp, vbl_sigs, head) {
+ if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
+ vbl_sig->info.si_code = vbl_seq;
+ send_sig_info(vbl_sig->info.si_signo,
+ &vbl_sig->info, vbl_sig->task);
- list_del(&vbl_sig->head);
+ list_del(&vbl_sig->head);
- drm_free(vbl_sig, sizeof(*vbl_sig),
- DRM_MEM_DRIVER);
-
- dev->vbl_pending--;
- }
- }
+ drm_free(vbl_sig, sizeof(*vbl_sig),
+ DRM_MEM_DRIVER);
+ atomic_dec(&dev->vbl_signal_pending);
+ drm_vblank_put(dev, crtc);
+ }
}
spin_unlock_irqrestore(&dev->vbl_lock, flags);
}
-EXPORT_SYMBOL(drm_vbl_send_signals);
+/**
+ * drm_handle_vblank - handle a vblank event
+ * @dev: DRM device
+ * @crtc: where this event occurred
+ *
+ * Drivers should call this routine in their vblank interrupt handlers to
+ * update the vblank counter and send any signals that may be pending.
+ */
+void drm_handle_vblank(struct drm_device *dev, int crtc)
+{
+ drm_update_vblank_count(dev, crtc);
+ DRM_WAKEUP(&dev->vbl_queue[crtc]);
+ drm_vbl_send_signals(dev, crtc);
+}
+EXPORT_SYMBOL(drm_handle_vblank);
/**
* Tasklet wrapper function.
diff --git a/drivers/char/drm/i915_dma.c b/drivers/char/drm/i915_dma.c
index a043bb12301..ef7bf143a80 100644
--- a/drivers/char/drm/i915_dma.c
+++ b/drivers/char/drm/i915_dma.c
@@ -415,10 +415,13 @@ static void i915_emit_breadcrumb(struct drm_device *dev)
drm_i915_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
- dev_priv->sarea_priv->last_enqueue = ++dev_priv->counter;
+ if (++dev_priv->counter > BREADCRUMB_MASK) {
+ dev_priv->counter = 1;
+ DRM_DEBUG("Breadcrumb counter wrapped around\n");
+ }
- if (dev_priv->counter > 0x7FFFFFFFUL)
- dev_priv->sarea_priv->last_enqueue = dev_priv->counter = 1;
+ if (dev_priv->sarea_priv)
+ dev_priv->sarea_priv->last_enqueue = dev_priv->counter;
BEGIN_LP_RING(4);
OUT_RING(CMD_STORE_DWORD_IDX);
@@ -428,6 +431,26 @@ static void i915_emit_breadcrumb(struct drm_device *dev)
ADVANCE_LP_RING();
}
+int i915_emit_mi_flush(struct drm_device *dev, uint32_t flush)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ uint32_t flush_cmd = CMD_MI_FLUSH;
+ RING_LOCALS;
+
+ flush_cmd |= flush;
+
+ i915_kernel_lost_context(dev);
+
+ BEGIN_LP_RING(4);
+ OUT_RING(flush_cmd);
+ OUT_RING(0);
+ OUT_RING(0);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+
+ return 0;
+}
+
static int i915_dispatch_cmdbuffer(struct drm_device * dev,
drm_i915_cmdbuffer_t * cmd)
{
@@ -511,52 +534,74 @@ static int i915_dispatch_batchbuffer(struct drm_device * dev,
return 0;
}
-static int i915_dispatch_flip(struct drm_device * dev)
+static void i915_do_dispatch_flip(struct drm_device * dev, int plane, int sync)
{
drm_i915_private_t *dev_priv = dev->dev_private;
+ u32 num_pages, current_page, next_page, dspbase;
+ int shift = 2 * plane, x, y;
RING_LOCALS;
- DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
- __FUNCTION__,
- dev_priv->current_page,
- dev_priv->sarea_priv->pf_current_page);
+ /* Calculate display base offset */
+ num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2;
+ current_page = (dev_priv->sarea_priv->pf_current_page >> shift) & 0x3;
+ next_page = (current_page + 1) % num_pages;
- i915_kernel_lost_context(dev);
-
- BEGIN_LP_RING(2);
- OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
- OUT_RING(0);
- ADVANCE_LP_RING();
+ switch (next_page) {
+ default:
+ case 0:
+ dspbase = dev_priv->sarea_priv->front_offset;
+ break;
+ case 1:
+ dspbase = dev_priv->sarea_priv->back_offset;
+ break;
+ case 2:
+ dspbase = dev_priv->sarea_priv->third_offset;
+ break;
+ }
- BEGIN_LP_RING(6);
- OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
- OUT_RING(0);
- if (dev_priv->current_page == 0) {
- OUT_RING(dev_priv->back_offset);
- dev_priv->current_page = 1;
+ if (plane == 0) {
+ x = dev_priv->sarea_priv->planeA_x;
+ y = dev_priv->sarea_priv->planeA_y;
} else {
- OUT_RING(dev_priv->front_offset);
- dev_priv->current_page = 0;
+ x = dev_priv->sarea_priv->planeB_x;
+ y = dev_priv->sarea_priv->planeB_y;
}
- OUT_RING(0);
- ADVANCE_LP_RING();
- BEGIN_LP_RING(2);
- OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
- OUT_RING(0);
- ADVANCE_LP_RING();
+ dspbase += (y * dev_priv->sarea_priv->pitch + x) * dev_priv->cpp;
- dev_priv->sarea_priv->last_enqueue = dev_priv->counter++;
+ DRM_DEBUG("plane=%d current_page=%d dspbase=0x%x\n", plane, current_page,
+ dspbase);
BEGIN_LP_RING(4);
- OUT_RING(CMD_STORE_DWORD_IDX);
- OUT_RING(20);
- OUT_RING(dev_priv->counter);
- OUT_RING(0);
+ OUT_RING(sync ? 0 :
+ (MI_WAIT_FOR_EVENT | (plane ? MI_WAIT_FOR_PLANE_B_FLIP :
+ MI_WAIT_FOR_PLANE_A_FLIP)));
+ OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | (sync ? 0 : ASYNC_FLIP) |
+ (plane ? DISPLAY_PLANE_B : DISPLAY_PLANE_A));
+ OUT_RING(dev_priv->sarea_priv->pitch * dev_priv->cpp);
+ OUT_RING(dspbase);
ADVANCE_LP_RING();
- dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
- return 0;
+ dev_priv->sarea_priv->pf_current_page &= ~(0x3 << shift);
+ dev_priv->sarea_priv->pf_current_page |= next_page << shift;
+}
+
+void i915_dispatch_flip(struct drm_device * dev, int planes, int sync)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int i;
+
+ DRM_DEBUG("planes=0x%x pfCurrentPage=%d\n",
+ planes, dev_priv->sarea_priv->pf_current_page);
+
+ i915_emit_mi_flush(dev, MI_READ_FLUSH | MI_EXE_FLUSH);
+
+ for (i = 0; i < 2; i++)
+ if (planes & (1 << i))
+ i915_do_dispatch_flip(dev, i, sync);
+
+ i915_emit_breadcrumb(dev);
+
}
static int i915_quiescent(struct drm_device * dev)
@@ -579,7 +624,6 @@ static int i915_batchbuffer(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u32 *hw_status = dev_priv->hw_status_page;
drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
dev_priv->sarea_priv;
drm_i915_batchbuffer_t *batch = data;
@@ -602,7 +646,7 @@ static int i915_batchbuffer(struct drm_device *dev, void *data,
ret = i915_dispatch_batchbuffer(dev, batch);
- sarea_priv->last_dispatch = (int)hw_status[5];
+ sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
return ret;
}
@@ -610,7 +654,6 @@ static int i915_cmdbuffer(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u32 *hw_status = dev_priv->hw_status_page;
drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
dev_priv->sarea_priv;
drm_i915_cmdbuffer_t *cmdbuf = data;
@@ -635,18 +678,51 @@ static int i915_cmdbuffer(struct drm_device *dev, void *data,
return ret;
}
- sarea_priv->last_dispatch = (int)hw_status[5];
+ sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
+ return 0;
+}
+
+static int i915_do_cleanup_pageflip(struct drm_device * dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int i, planes, num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2;
+
+ DRM_DEBUG("\n");
+
+ for (i = 0, planes = 0; i < 2; i++)
+ if (dev_priv->sarea_priv->pf_current_page & (0x3 << (2 * i))) {
+ dev_priv->sarea_priv->pf_current_page =
+ (dev_priv->sarea_priv->pf_current_page &
+ ~(0x3 << (2 * i))) | ((num_pages - 1) << (2 * i));
+
+ planes |= 1 << i;
+ }
+
+ if (planes)
+ i915_dispatch_flip(dev, planes, 0);
+
return 0;
}
static int i915_flip_bufs(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
- DRM_DEBUG("%s\n", __FUNCTION__);
+ drm_i915_flip_t *param = data;
+
+ DRM_DEBUG("\n");
LOCK_TEST_WITH_RETURN(dev, file_priv);
- return i915_dispatch_flip(dev);
+ /* This is really planes */
+ if (param->pipes & ~0x3) {
+ DRM_ERROR("Invalid planes 0x%x, only <= 0x3 is valid\n",
+ param->pipes);
+ return -EINVAL;
+ }
+
+ i915_dispatch_flip(dev, param->pipes, 0);
+
+ return 0;
}
static int i915_getparam(struct drm_device *dev, void *data,
@@ -807,6 +883,8 @@ void i915_driver_lastclose(struct drm_device * dev)
if (!dev_priv)
return;
+ if (drm_getsarea(dev) && dev_priv->sarea_priv)
+ i915_do_cleanup_pageflip(dev);
if (dev_priv->agp_heap)
i915_mem_takedown(&(dev_priv->agp_heap));
diff --git a/drivers/char/drm/i915_drm.h b/drivers/char/drm/i915_drm.h
index 05c66cf03a9..0431c00e228 100644
--- a/drivers/char/drm/i915_drm.h
+++ b/drivers/char/drm/i915_drm.h
@@ -105,14 +105,29 @@ typedef struct _drm_i915_sarea {
unsigned int rotated_tiled;
unsigned int rotated2_tiled;
- int pipeA_x;
- int pipeA_y;
- int pipeA_w;
- int pipeA_h;
- int pipeB_x;
- int pipeB_y;
- int pipeB_w;
- int pipeB_h;
+ int planeA_x;
+ int planeA_y;
+ int planeA_w;
+ int planeA_h;
+ int planeB_x;
+ int planeB_y;
+ int planeB_w;
+ int planeB_h;
+
+ /* Triple buffering */
+ drm_handle_t third_handle;
+ int third_offset;
+ int third_size;
+ unsigned int third_tiled;
+
+ /* buffer object handles for the static buffers. May change
+ * over the lifetime of the client, though it doesn't in our current
+ * implementation.
+ */
+ unsigned int front_bo_handle;
+ unsigned int back_bo_handle;
+ unsigned int third_bo_handle;
+ unsigned int depth_bo_handle;
} drm_i915_sarea_t;
/* Flags for perf_boxes
@@ -146,7 +161,7 @@ typedef struct _drm_i915_sarea {
#define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
#define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
-#define DRM_IOCTL_I915_FLIP DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLIP)
+#define DRM_IOCTL_I915_FLIP DRM_IOW( DRM_COMMAND_BASE + DRM_I915_FLIP, drm_i915_flip_t)
#define DRM_IOCTL_I915_BATCHBUFFER DRM_IOW( DRM_COMMAND_BASE + DRM_I915_BATCHBUFFER, drm_i915_batchbuffer_t)
#define DRM_IOCTL_I915_IRQ_EMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_IRQ_EMIT, drm_i915_irq_emit_t)
#define DRM_IOCTL_I915_IRQ_WAIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_IRQ_WAIT, drm_i915_irq_wait_t)
@@ -161,6 +176,18 @@ typedef struct _drm_i915_sarea {
#define DRM_IOCTL_I915_GET_VBLANK_PIPE DRM_IOR( DRM_COMMAND_BASE + DRM_I915_GET_VBLANK_PIPE, drm_i915_vblank_pipe_t)
#define DRM_IOCTL_I915_VBLANK_SWAP DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_VBLANK_SWAP, drm_i915_vblank_swap_t)
+/* Asynchronous page flipping:
+ */
+typedef struct drm_i915_flip {
+ /*
+ * This is really talking about planes, and we could rename it
+ * except for the fact that some of the duplicated i915_drm.h files
+ * out there check for HAVE_I915_FLIP and so might pick up this
+ * version.
+ */
+ int pipes;
+} drm_i915_flip_t;
+
/* Allow drivers to submit batchbuffers directly to hardware, relying
* on the security mechanisms provided by hardware.
*/
diff --git a/drivers/char/drm/i915_drv.c b/drivers/char/drm/i915_drv.c
index b2b451dc446..bb8f1b2fb38 100644
--- a/drivers/char/drm/i915_drv.c
+++ b/drivers/char/drm/i915_drv.c
@@ -533,8 +533,7 @@ static struct drm_driver driver = {
*/
.driver_features =
DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
- DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL |
- DRIVER_IRQ_VBL2,
+ DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
.load = i915_driver_load,
.unload = i915_driver_unload,
.lastclose = i915_driver_lastclose,
@@ -542,8 +541,9 @@ static struct drm_driver driver = {
.suspend = i915_suspend,
.resume = i915_resume,
.device_is_agp = i915_driver_device_is_agp,
- .vblank_wait = i915_driver_vblank_wait,
- .vblank_wait2 = i915_driver_vblank_wait2,
+ .get_vblank_counter = i915_get_vblank_counter,
+ .enable_vblank = i915_enable_vblank,
+ .disable_vblank = i915_disable_vblank,
.irq_preinstall = i915_driver_irq_preinstall,
.irq_postinstall = i915_driver_irq_postinstall,
.irq_uninstall = i915_driver_irq_uninstall,
diff --git a/drivers/char/drm/i915_drv.h b/drivers/char/drm/i915_drv.h
index 50cd68d6b6c..c614d78b3df 100644
--- a/drivers/char/drm/i915_drv.h
+++ b/drivers/char/drm/i915_drv.h
@@ -76,8 +76,9 @@ struct mem_block {
typedef struct _drm_i915_vbl_swap {
struct list_head head;
drm_drawable_t drw_id;
- unsigned int pipe;
+ unsigned int plane;
unsigned int sequence;
+ int flip;
} drm_i915_vbl_swap_t;
typedef struct drm_i915_private {
@@ -90,7 +91,7 @@ typedef struct drm_i915_private {
drm_dma_handle_t *status_page_dmah;
void *hw_status_page;
dma_addr_t dma_status_page;
- unsigned long counter;
+ uint32_t counter;
unsigned int status_gfx_addr;
drm_local_map_t hws_map;
@@ -103,13 +104,18 @@ typedef struct drm_i915_private {
wait_queue_head_t irq_queue;
atomic_t irq_received;
- atomic_t irq_emitted;
+ atomic_t irq_emited;
int tex_lru_log_granularity;
int allow_batchbuffer;
struct mem_block *agp_heap;
unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
int vblank_pipe;
+ spinlock_t user_irq_lock;
+ int user_irq_refcount;
+ int fence_irq_on;
+ uint32_t irq_enable_reg;
+ int irq_enabled;
spinlock_t swaps_lock;
drm_i915_vbl_swap_t vbl_swaps;
@@ -216,7 +222,7 @@ extern void i915_driver_preclose(struct drm_device *dev,
extern int i915_driver_device_is_agp(struct drm_device * dev);
extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg);
-
+extern void i915_dispatch_flip(struct drm_device * dev, int pipes, int sync);
/* i915_irq.c */
extern int i915_irq_emit(struct drm_device *dev, void *data,
struct drm_file *file_priv);
@@ -227,7 +233,7 @@ extern int i915_driver_vblank_wait(struct drm_device *dev, unsigned int *sequenc
extern int i915_driver_vblank_wait2(struct drm_device *dev, unsigned int *sequence);
extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS);
extern void i915_driver_irq_preinstall(struct drm_device * dev);
-extern void i915_driver_irq_postinstall(struct drm_device * dev);
+extern int i915_driver_irq_postinstall(struct drm_device * dev);
extern void i915_driver_irq_uninstall(struct drm_device * dev);
extern int i915_vblank_pipe_set(struct drm_device *dev, void *data,
struct drm_file *file_priv);
@@ -235,6 +241,9 @@ extern int i915_vblank_pipe_get(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int i915_vblank_swap(struct drm_device *dev, void *data,
struct drm_file *file_priv);
+extern int i915_enable_vblank(struct drm_device *dev, int crtc);
+extern void i915_disable_vblank(struct drm_device *dev, int crtc);
+extern u32 i915_get_vblank_counter(struct drm_device *dev, int crtc);
/* i915_mem.c */
extern int i915_mem_alloc(struct drm_device *dev, void *data,
@@ -379,21 +388,91 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
/* Interrupt bits:
*/
-#define USER_INT_FLAG (1<<1)
-#define VSYNC_PIPEB_FLAG (1<<5)
-#define VSYNC_PIPEA_FLAG (1<<7)
-#define HWB_OOM_FLAG (1<<13) /* binner out of memory */
+#define I915_PIPE_CONTROL_NOTIFY_INTERRUPT (1<<18)
+#define I915_DISPLAY_PORT_INTERRUPT (1<<17)
+#define I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT (1<<15)
+#define I915_GMCH_THERMAL_SENSOR_EVENT_INTERRUPT (1<<14)
+#define I915_HWB_OOM_INTERRUPT (1<<13) /* binner out of memory */
+#define I915_SYNC_STATUS_INTERRUPT (1<<12)
+#define I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT (1<<11)
+#define I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT (1<<10)
+#define I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT (1<<9)
+#define I915_DISPLAY_PLANE_C_FLIP_PENDING_INTERRUPT (1<<8)
+#define I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT (1<<7)
+#define I915_DISPLAY_PIPE_A_EVENT_INTERRUPT (1<<6)
+#define I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT (1<<5)
+#define I915_DISPLAY_PIPE_B_EVENT_INTERRUPT (1<<4)
+#define I915_DEBUG_INTERRUPT (1<<2)
+#define I915_USER_INTERRUPT (1<<1)
+
#define I915REG_HWSTAM 0x02098
#define I915REG_INT_IDENTITY_R 0x020a4
#define I915REG_INT_MASK_R 0x020a8
#define I915REG_INT_ENABLE_R 0x020a0
+#define I915REG_INSTPM 0x020c0
+
+#define PIPEADSL 0x70000
+#define PIPEBDSL 0x71000
#define I915REG_PIPEASTAT 0x70024
#define I915REG_PIPEBSTAT 0x71024
+/*
+ * The two pipe frame counter registers are not synchronized, so
+ * reading a stable value is somewhat tricky. The following code
+ * should work:
+ *
+ * do {
+ * high1 = ((INREG(PIPEAFRAMEHIGH) & PIPE_FRAME_HIGH_MASK) >>
+ * PIPE_FRAME_HIGH_SHIFT;
+ * low1 = ((INREG(PIPEAFRAMEPIXEL) & PIPE_FRAME_LOW_MASK) >>
+ * PIPE_FRAME_LOW_SHIFT);
+ * high2 = ((INREG(PIPEAFRAMEHIGH) & PIPE_FRAME_HIGH_MASK) >>
+ * PIPE_FRAME_HIGH_SHIFT);
+ * } while (high1 != high2);
+ * frame = (high1 << 8) | low1;
+ */
+#define PIPEAFRAMEHIGH 0x70040
+#define PIPEBFRAMEHIGH 0x71040
+#define PIPE_FRAME_HIGH_MASK 0x0000ffff
+#define PIPE_FRAME_HIGH_SHIFT 0
+#define PIPEAFRAMEPIXEL 0x70044
+#define PIPEBFRAMEPIXEL 0x71044
-#define I915_VBLANK_INTERRUPT_ENABLE (1UL<<17)
-#define I915_VBLANK_CLEAR (1UL<<1)
+#define PIPE_FRAME_LOW_MASK 0xff000000
+#define PIPE_FRAME_LOW_SHIFT 24
+/*
+ * Pixel within the current frame is counted in the PIPEAFRAMEPIXEL register
+ * and is 24 bits wide.
+ */
+#define PIPE_PIXEL_MASK 0x00ffffff
+#define PIPE_PIXEL_SHIFT 0
+
+#define I915_FIFO_UNDERRUN_STATUS (1UL<<31)
+#define I915_CRC_ERROR_ENABLE (1UL<<29)
+#define I915_CRC_DONE_ENABLE (1UL<<28)
+#define I915_GMBUS_EVENT_ENABLE (1UL<<27)
+#define I915_VSYNC_INTERRUPT_ENABLE (1UL<<25)
+#define I915_DISPLAY_LINE_COMPARE_ENABLE (1UL<<24)
+#define I915_DPST_EVENT_ENABLE (1UL<<23)
+#define I915_LEGACY_BLC_EVENT_ENABLE (1UL<<22)
+#define I915_ODD_FIELD_INTERRUPT_ENABLE (1UL<<21)
+#define I915_EVEN_FIELD_INTERRUPT_ENABLE (1UL<<20)
+#define I915_START_VBLANK_INTERRUPT_ENABLE (1UL<<18) /* 965 or later */
+#define I915_VBLANK_INTERRUPT_ENABLE (1UL<<17)
+#define I915_OVERLAY_UPDATED_ENABLE (1UL<<16)
+#define I915_CRC_ERROR_INTERRUPT_STATUS (1UL<<13)
+#define I915_CRC_DONE_INTERRUPT_STATUS (1UL<<12)
+#define I915_GMBUS_INTERRUPT_STATUS (1UL<<11)
+#define I915_VSYNC_INTERRUPT_STATUS (1UL<<9)
+#define I915_DISPLAY_LINE_COMPARE_STATUS (1UL<<8)
+#define I915_DPST_EVENT_STATUS (1UL<<7)
+#define I915_LEGACY_BLC_EVENT_STATUS (1UL<<6)
+#define I915_ODD_FIELD_INTERRUPT_STATUS (1UL<<5)
+#define I915_EVEN_FIELD_INTERRUPT_STATUS (1UL<<4)
+#define I915_START_VBLANK_INTERRUPT_STATUS (1UL<<2) /* 965 or later */
+#define I915_VBLANK_INTERRUPT_STATUS (1UL<<1)
+#define I915_OVERLAY_UPDATED_STATUS (1UL<<0)
#define SRX_INDEX 0x3c4
#define SRX_DATA 0x3c5
diff --git a/drivers/char/drm/i915_irq.c b/drivers/char/drm/i915_irq.c
index f7f16e7a8bf..023ce66ef3a 100644
--- a/drivers/char/drm/i915_irq.c
+++ b/drivers/char/drm/i915_irq.c
@@ -38,6 +38,109 @@
#define MAX_NOPID ((u32)~0)
/**
+ * i915_get_pipe - return the the pipe associated with a given plane
+ * @dev: DRM device
+ * @plane: plane to look for
+ *
+ * The Intel Mesa & 2D drivers call the vblank routines with a plane number
+ * rather than a pipe number, since they may not always be equal. This routine
+ * maps the given @plane back to a pipe number.
+ */
+static int
+i915_get_pipe(struct drm_device *dev, int plane)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ u32 dspcntr;
+
+ dspcntr = plane ? I915_READ(DSPBCNTR) : I915_READ(DSPACNTR);
+
+ return dspcntr & DISPPLANE_SEL_PIPE_MASK ? 1 : 0;
+}
+
+/**
+ * i915_get_plane - return the the plane associated with a given pipe
+ * @dev: DRM device
+ * @pipe: pipe to look for
+ *
+ * The Intel Mesa & 2D drivers call the vblank routines with a plane number
+ * rather than a plane number, since they may not always be equal. This routine
+ * maps the given @pipe back to a plane number.
+ */
+static int
+i915_get_plane(struct drm_device *dev, int pipe)
+{
+ if (i915_get_pipe(dev, 0) == pipe)
+ return 0;
+ return 1;
+}
+
+/**
+ * i915_pipe_enabled - check if a pipe is enabled
+ * @dev: DRM device
+ * @pipe: pipe to check
+ *
+ * Reading certain registers when the pipe is disabled can hang the chip.
+ * Use this routine to make sure the PLL is running and the pipe is active
+ * before reading such registers if unsure.
+ */
+static int
+i915_pipe_enabled(struct drm_device *dev, int pipe)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ unsigned long pipeconf = pipe ? PIPEBCONF : PIPEACONF;
+
+ if (I915_READ(pipeconf) & PIPEACONF_ENABLE)
+ return 1;
+
+ return 0;
+}
+
+/**
+ * Emit a synchronous flip.
+ *
+ * This function must be called with the drawable spinlock held.
+ */
+static void
+i915_dispatch_vsync_flip(struct drm_device *dev, struct drm_drawable_info *drw,
+ int plane)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ drm_i915_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ u16 x1, y1, x2, y2;
+ int pf_planes = 1 << plane;
+
+ /* If the window is visible on the other plane, we have to flip on that
+ * plane as well.
+ */
+ if (plane == 1) {
+ x1 = sarea_priv->planeA_x;
+ y1 = sarea_priv->planeA_y;
+ x2 = x1 + sarea_priv->planeA_w;
+ y2 = y1 + sarea_priv->planeA_h;
+ } else {
+ x1 = sarea_priv->planeB_x;
+ y1 = sarea_priv->planeB_y;
+ x2 = x1 + sarea_priv->planeB_w;
+ y2 = y1 + sarea_priv->planeB_h;
+ }
+
+ if (x2 > 0 && y2 > 0) {
+ int i, num_rects = drw->num_rects;
+ struct drm_clip_rect *rect = drw->rects;
+
+ for (i = 0; i < num_rects; i++)
+ if (!(rect[i].x1 >= x2 || rect[i].y1 >= y2 ||
+ rect[i].x2 <= x1 || rect[i].y2 <= y1)) {
+ pf_planes = 0x3;
+
+ break;
+ }
+ }
+
+ i915_dispatch_flip(dev, pf_planes, 1);
+}
+
+/**
* Emit blits for scheduled buffer swaps.
*
* This function will be called with the HW lock held.
@@ -45,20 +148,19 @@
static void i915_vblank_tasklet(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- unsigned long irqflags;
struct list_head *list, *tmp, hits, *hit;
- int nhits, nrects, slice[2], upper[2], lower[2], i;
- unsigned counter[2] = { atomic_read(&dev->vbl_received),
- atomic_read(&dev->vbl_received2) };
+ int nhits, nrects, slice[2], upper[2], lower[2], i, num_pages;
+ unsigned counter[2];
struct drm_drawable_info *drw;
drm_i915_sarea_t *sarea_priv = dev_priv->sarea_priv;
- u32 cpp = dev_priv->cpp;
+ u32 cpp = dev_priv->cpp, offsets[3];
u32 cmd = (cpp == 4) ? (XY_SRC_COPY_BLT_CMD |
XY_SRC_COPY_BLT_WRITE_ALPHA |
XY_SRC_COPY_BLT_WRITE_RGB)
: XY_SRC_COPY_BLT_CMD;
u32 src_pitch = sarea_priv->pitch * cpp;
u32 dst_pitch = sarea_priv->pitch * cpp;
+ /* COPY rop (0xcc), map cpp to magic color depth constants */
u32 ropcpp = (0xcc << 16) | ((cpp - 1) << 24);
RING_LOCALS;
@@ -71,24 +173,34 @@ static void i915_vblank_tasklet(struct drm_device *dev)
src_pitch >>= 2;
}
+ counter[0] = drm_vblank_count(dev, 0);
+ counter[1] = drm_vblank_count(dev, 1);
+
DRM_DEBUG("\n");
INIT_LIST_HEAD(&hits);
nhits = nrects = 0;
- spin_lock_irqsave(&dev_priv->swaps_lock, irqflags);
+ /* No irqsave/restore necessary. This tasklet may be run in an
+ * interrupt context or normal context, but we don't have to worry
+ * about getting interrupted by something acquiring the lock, because
+ * we are the interrupt context thing that acquires the lock.
+ */
+ spin_lock(&dev_priv->swaps_lock);
/* Find buffer swaps scheduled for this vertical blank */
list_for_each_safe(list, tmp, &dev_priv->vbl_swaps.head) {
drm_i915_vbl_swap_t *vbl_swap =
list_entry(list, drm_i915_vbl_swap_t, head);
+ int pipe = i915_get_pipe(dev, vbl_swap->plane);
- if ((counter[vbl_swap->pipe] - vbl_swap->sequence) > (1<<23))
+ if ((counter[pipe] - vbl_swap->sequence) > (1<<23))
continue;
list_del(list);
dev_priv->swaps_pending--;
+ drm_vblank_put(dev, pipe);
spin_unlock(&dev_priv->swaps_lock);
spin_lock(&dev->drw_lock);
@@ -126,43 +238,23 @@ static void i915_vblank_tasklet(struct drm_device *dev)
spin_lock(&dev_priv->swaps_lock);
}
- if (nhits == 0) {
- spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
- return;
- }
-
spin_unlock(&dev_priv->swaps_lock);
- i915_kernel_lost_context(dev);
-
- if (IS_I965G(dev)) {
- BEGIN_LP_RING(4);
-
- OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
- OUT_RING(0);
- OUT_RING(((sarea_priv->width - 1) & 0xffff) | ((sarea_priv->height - 1) << 16));
- OUT_RING(0);
- ADVANCE_LP_RING();
- } else {
- BEGIN_LP_RING(6);
-
- OUT_RING(GFX_OP_DRAWRECT_INFO);
- OUT_RING(0);
- OUT_RING(0);
- OUT_RING(sarea_priv->width | sarea_priv->height << 16);
- OUT_RING(sarea_priv->width | sarea_priv->height << 16);
- OUT_RING(0);
-
- ADVANCE_LP_RING();
- }
+ if (nhits == 0)
+ return;
- sarea_priv->ctxOwner = DRM_KERNEL_CONTEXT;
+ i915_kernel_lost_context(dev);
upper[0] = upper[1] = 0;
- slice[0] = max(sarea_priv->pipeA_h / nhits, 1);
- slice[1] = max(sarea_priv->pipeB_h / nhits, 1);
- lower[0] = sarea_priv->pipeA_y + slice[0];
- lower[1] = sarea_priv->pipeB_y + slice[0];
+ slice[0] = max(sarea_priv->planeA_h / nhits, 1);
+ slice[1] = max(sarea_priv->planeB_h / nhits, 1);
+ lower[0] = sarea_priv->planeA_y + slice[0];
+ lower[1] = sarea_priv->planeB_y + slice[0];
+
+ offsets[0] = sarea_priv->front_offset;
+ offsets[1] = sarea_priv->back_offset;
+ offsets[2] = sarea_priv->third_offset;
+ num_pages = sarea_priv->third_handle ? 3 : 2;
spin_lock(&dev->drw_lock);
@@ -174,6 +266,8 @@ static void i915_vblank_tasklet(struct drm_device *dev)
for (i = 0; i++ < nhits;
upper[0] = lower[0], lower[0] += slice[0],
upper[1] = lower[1], lower[1] += slice[1]) {
+ int init_drawrect = 1;
+
if (i == nhits)
lower[0] = lower[1] = sarea_priv->height;
@@ -181,7 +275,7 @@ static void i915_vblank_tasklet(struct drm_device *dev)
drm_i915_vbl_swap_t *swap_hit =
list_entry(hit, drm_i915_vbl_swap_t, head);
struct drm_clip_rect *rect;
- int num_rects, pipe;
+ int num_rects, plane, front, back;
unsigned short top, bottom;
drw = drm_get_drawable_info(dev, swap_hit->drw_id);
@@ -189,10 +283,50 @@ static void i915_vblank_tasklet(struct drm_device *dev)
if (!drw)
continue;
+ plane = swap_hit->plane;
+
+ if (swap_hit->flip) {
+ i915_dispatch_vsync_flip(dev, drw, plane);
+ continue;
+ }
+
+ if (init_drawrect) {
+ int width = sarea_priv->width;
+ int height = sarea_priv->height;
+ if (IS_I965G(dev)) {
+ BEGIN_LP_RING(4);
+
+ OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
+ OUT_RING(0);
+ OUT_RING(((width - 1) & 0xffff) | ((height - 1) << 16));
+ OUT_RING(0);
+
+ ADVANCE_LP_RING();
+ } else {
+ BEGIN_LP_RING(6);
+
+ OUT_RING(GFX_OP_DRAWRECT_INFO);
+ OUT_RING(0);
+ OUT_RING(0);
+ OUT_RING(((width - 1) & 0xffff) | ((height - 1) << 16));
+ OUT_RING(0);
+ OUT_RING(0);
+
+ ADVANCE_LP_RING();
+ }
+
+ sarea_priv->ctxOwner = DRM_KERNEL_CONTEXT;
+
+ init_drawrect = 0;
+ }
+
rect = drw->rects;
- pipe = swap_hit->pipe;
- top = upper[pipe];
- bottom = lower[pipe];
+ top = upper[plane];
+ bottom = lower[plane];
+
+ front = (dev_priv->sarea_priv->pf_current_page >>
+ (2 * plane)) & 0x3;
+ back = (front + 1) % num_pages;
for (num_rects = drw->num_rects; num_rects--; rect++) {
int y1 = max(rect->y1, top);
@@ -207,17 +341,17 @@ static void i915_vblank_tasklet(struct drm_device *dev)
OUT_RING(ropcpp | dst_pitch);
OUT_RING((y1 << 16) | rect->x1);
OUT_RING((y2 << 16) | rect->x2);
- OUT_RING(sarea_priv->front_offset);
+ OUT_RING(offsets[front]);
OUT_RING((y1 << 16) | rect->x1);
OUT_RING(src_pitch);
- OUT_RING(sarea_priv->back_offset);
+ OUT_RING(offsets[back]);
ADVANCE_LP_RING();
}
}
}
- spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ spin_unlock(&dev->drw_lock);
list_for_each_safe(hit, tmp, &hits) {
drm_i915_vbl_swap_t *swap_hit =
@@ -229,67 +363,112 @@ static void i915_vblank_tasklet(struct drm_device *dev)
}
}
+u32 i915_get_vblank_counter(struct drm_device *dev, int plane)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ unsigned long high_frame;
+ unsigned long low_frame;
+ u32 high1, high2, low, count;
+ int pipe;
+
+ pipe = i915_get_pipe(dev, plane);
+ high_frame = pipe ? PIPEBFRAMEHIGH : PIPEAFRAMEHIGH;
+ low_frame = pipe ? PIPEBFRAMEPIXEL : PIPEAFRAMEPIXEL;
+
+ if (!i915_pipe_enabled(dev, pipe)) {
+ printk(KERN_ERR "trying to get vblank count for disabled "
+ "pipe %d\n", pipe);
+ return 0;
+ }
+
+ /*
+ * High & low register fields aren't synchronized, so make sure
+ * we get a low value that's stable across two reads of the high
+ * register.
+ */
+ do {
+ high1 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >>
+ PIPE_FRAME_HIGH_SHIFT);
+ low = ((I915_READ(low_frame) & PIPE_FRAME_LOW_MASK) >>
+ PIPE_FRAME_LOW_SHIFT);
+ high2 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >>
+ PIPE_FRAME_HIGH_SHIFT);
+ } while (high1 != high2);
+
+ count = (high1 << 8) | low;
+
+ /* count may be reset by other driver(e.g. 2D driver),
+ we have no way to know if it is wrapped or resetted
+ when count is zero. do a rough guess.
+ */
+ if (count == 0 && dev->last_vblank[pipe] < dev->max_vblank_count/2)
+ dev->last_vblank[pipe] = 0;
+
+ return count;
+}
+
irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
{
struct drm_device *dev = (struct drm_device *) arg;
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u16 temp;
+ u32 iir;
u32 pipea_stats, pipeb_stats;
-
- pipea_stats = I915_READ(I915REG_PIPEASTAT);
- pipeb_stats = I915_READ(I915REG_PIPEBSTAT);
-
- temp = I915_READ16(I915REG_INT_IDENTITY_R);
-
- temp &= (USER_INT_FLAG | VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG);
-
- DRM_DEBUG("%s flag=%08x\n", __FUNCTION__, temp);
-
- if (temp == 0)
+ int vblank = 0;
+
+ iir = I915_READ(I915REG_INT_IDENTITY_R);
+ if (iir == 0) {
+ DRM_DEBUG ("iir 0x%08x im 0x%08x ie 0x%08x pipea 0x%08x pipeb 0x%08x\n",
+ iir,
+ I915_READ(I915REG_INT_MASK_R),
+ I915_READ(I915REG_INT_ENABLE_R),
+ I915_READ(I915REG_PIPEASTAT),
+ I915_READ(I915REG_PIPEBSTAT));
return IRQ_NONE;
+ }
- I915_WRITE16(I915REG_INT_IDENTITY_R, temp);
- (void) I915_READ16(I915REG_INT_IDENTITY_R);
- DRM_READMEMORYBARRIER();
-
- dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
+ /*
+ * Clear the PIPE(A|B)STAT regs before the IIR otherwise
+ * we may get extra interrupts.
+ */
+ if (iir & I915_DISPLAY_PIPE_A_EVENT_INTERRUPT) {
+ pipea_stats = I915_READ(I915REG_PIPEASTAT);
+ if (pipea_stats & (I915_START_VBLANK_INTERRUPT_STATUS|
+ I915_VBLANK_INTERRUPT_STATUS))
+ {
+ vblank++;
+ drm_handle_vblank(dev, i915_get_plane(dev, 0));
+ }
+ I915_WRITE(I915REG_PIPEASTAT, pipea_stats);
+ }
+ if (iir & I915_DISPLAY_PIPE_B_EVENT_INTERRUPT) {
+ pipeb_stats = I915_READ(I915REG_PIPEBSTAT);
+ if (pipeb_stats & (I915_START_VBLANK_INTERRUPT_STATUS|
+ I915_VBLANK_INTERRUPT_STATUS))
+ {
+ vblank++;
+ drm_handle_vblank(dev, i915_get_plane(dev, 1));
+ }
+ I915_WRITE(I915REG_PIPEBSTAT, pipeb_stats);
+ }
- if (temp & USER_INT_FLAG)
- DRM_WAKEUP(&dev_priv->irq_queue);
+ if (dev_priv->sarea_priv)
+ dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
- if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) {
- int vblank_pipe = dev_priv->vblank_pipe;
-
- if ((vblank_pipe &
- (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B))
- == (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B)) {
- if (temp & VSYNC_PIPEA_FLAG)
- atomic_inc(&dev->vbl_received);
- if (temp & VSYNC_PIPEB_FLAG)
- atomic_inc(&dev->vbl_received2);
- } else if (((temp & VSYNC_PIPEA_FLAG) &&
- (vblank_pipe & DRM_I915_VBLANK_PIPE_A)) ||
- ((temp & VSYNC_PIPEB_FLAG) &&
- (vblank_pipe & DRM_I915_VBLANK_PIPE_B)))
- atomic_inc(&dev->vbl_received);
-
- DRM_WAKEUP(&dev->vbl_queue);
- drm_vbl_send_signals(dev);
+ I915_WRITE(I915REG_INT_IDENTITY_R, iir);
+ (void) I915_READ(I915REG_INT_IDENTITY_R); /* Flush posted write */
+ if (iir & I915_USER_INTERRUPT) {
+ DRM_WAKEUP(&dev_priv->irq_queue);
+ }
+ if (vblank) {
if (dev_priv->swaps_pending > 0)
drm_locked_tasklet(dev, i915_vblank_tasklet);
- I915_WRITE(I915REG_PIPEASTAT,
- pipea_stats|I915_VBLANK_INTERRUPT_ENABLE|
- I915_VBLANK_CLEAR);
- I915_WRITE(I915REG_PIPEBSTAT,
- pipeb_stats|I915_VBLANK_INTERRUPT_ENABLE|
- I915_VBLANK_CLEAR);
}
return IRQ_HANDLED;
}
-static int i915_emit_irq(struct drm_device * dev)
+static int i915_emit_irq(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
@@ -336,42 +515,12 @@ static int i915_wait_irq(struct drm_device * dev, int irq_nr)
READ_BREADCRUMB(dev_priv), (int)dev_priv->counter);
}
- dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
+ if (dev_priv->sarea_priv)
+ dev_priv->sarea_priv->last_dispatch =
+ READ_BREADCRUMB(dev_priv);
return ret;
}
-static int i915_driver_vblank_do_wait(struct drm_device *dev, unsigned int *sequence,
- atomic_t *counter)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- unsigned int cur_vblank;
- int ret = 0;
-
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
- return -EINVAL;
- }
-
- DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
- (((cur_vblank = atomic_read(counter))
- - *sequence) <= (1<<23)));
-
- *sequence = cur_vblank;
-
- return ret;
-}
-
-
-int i915_driver_vblank_wait(struct drm_device *dev, unsigned int *sequence)
-{
- return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received);
-}
-
-int i915_driver_vblank_wait2(struct drm_device *dev, unsigned int *sequence)
-{
- return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received2);
-}
-
/* Needs the lock as it touches the ring.
*/
int i915_irq_emit(struct drm_device *dev, void *data,
@@ -414,18 +563,96 @@ int i915_irq_wait(struct drm_device *dev, void *data,
return i915_wait_irq(dev, irqwait->irq_seq);
}
+int i915_enable_vblank(struct drm_device *dev, int plane)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ int pipe = i915_get_pipe(dev, plane);
+ u32 pipestat_reg = 0;
+ u32 pipestat;
+
+ switch (pipe) {
+ case 0:
+ pipestat_reg = I915REG_PIPEASTAT;
+ dev_priv->irq_enable_reg |= I915_DISPLAY_PIPE_A_EVENT_INTERRUPT;
+ break;
+ case 1:
+ pipestat_reg = I915REG_PIPEBSTAT;
+ dev_priv->irq_enable_reg |= I915_DISPLAY_PIPE_B_EVENT_INTERRUPT;
+ break;
+ default:
+ DRM_ERROR("tried to enable vblank on non-existent pipe %d\n",
+ pipe);
+ break;
+ }
+
+ if (pipestat_reg)
+ {
+ pipestat = I915_READ (pipestat_reg);
+ /*
+ * Older chips didn't have the start vblank interrupt,
+ * but
+ */
+ if (IS_I965G (dev))
+ pipestat |= I915_START_VBLANK_INTERRUPT_ENABLE;
+ else
+ pipestat |= I915_VBLANK_INTERRUPT_ENABLE;
+ /*
+ * Clear any pending status
+ */
+ pipestat |= (I915_START_VBLANK_INTERRUPT_STATUS |
+ I915_VBLANK_INTERRUPT_STATUS);
+ I915_WRITE(pipestat_reg, pipestat);
+ }
+ I915_WRITE(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg);
+
+ return 0;
+}
+
+void i915_disable_vblank(struct drm_device *dev, int plane)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ int pipe = i915_get_pipe(dev, plane);
+ u32 pipestat_reg = 0;
+ u32 pipestat;
+
+ switch (pipe) {
+ case 0:
+ pipestat_reg = I915REG_PIPEASTAT;
+ dev_priv->irq_enable_reg &= ~I915_DISPLAY_PIPE_A_EVENT_INTERRUPT;
+ break;
+ case 1:
+ pipestat_reg = I915REG_PIPEBSTAT;
+ dev_priv->irq_enable_reg &= ~I915_DISPLAY_PIPE_B_EVENT_INTERRUPT;
+ break;
+ default:
+ DRM_ERROR("tried to disable vblank on non-existent pipe %d\n",
+ pipe);
+ break;
+ }
+
+ I915_WRITE(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg);
+ if (pipestat_reg)
+ {
+ pipestat = I915_READ (pipestat_reg);
+ pipestat &= ~(I915_START_VBLANK_INTERRUPT_ENABLE |
+ I915_VBLANK_INTERRUPT_ENABLE);
+ /*
+ * Clear any pending status
+ */
+ pipestat |= (I915_START_VBLANK_INTERRUPT_STATUS |
+ I915_VBLANK_INTERRUPT_STATUS);
+ I915_WRITE(pipestat_reg, pipestat);
+ }
+}
+
static void i915_enable_interrupt (struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u16 flag;
- flag = 0;
- if (dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_A)
- flag |= VSYNC_PIPEA_FLAG;
- if (dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_B)
- flag |= VSYNC_PIPEB_FLAG;
+ dev_priv->irq_enable_reg |= I915_USER_INTERRUPT;
- I915_WRITE16(I915REG_INT_ENABLE_R, USER_INT_FLAG | flag);
+ I915_WRITE(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg);
+ dev_priv->irq_enabled = 1;
}
/* Set the vblank monitor pipe
@@ -448,8 +675,6 @@ int i915_vblank_pipe_set(struct drm_device *dev, void *data,
dev_priv->vblank_pipe = pipe->pipe;
- i915_enable_interrupt (dev);
-
return 0;
}
@@ -467,9 +692,9 @@ int i915_vblank_pipe_get(struct drm_device *dev, void *data,
flag = I915_READ(I915REG_INT_ENABLE_R);
pipe->pipe = 0;
- if (flag & VSYNC_PIPEA_FLAG)
+ if (flag & I915_DISPLAY_PIPE_A_EVENT_INTERRUPT)
pipe->pipe |= DRM_I915_VBLANK_PIPE_A;
- if (flag & VSYNC_PIPEB_FLAG)
+ if (flag & I915_DISPLAY_PIPE_B_EVENT_INTERRUPT)
pipe->pipe |= DRM_I915_VBLANK_PIPE_B;
return 0;
@@ -484,27 +709,30 @@ int i915_vblank_swap(struct drm_device *dev, void *data,
drm_i915_private_t *dev_priv = dev->dev_private;
drm_i915_vblank_swap_t *swap = data;
drm_i915_vbl_swap_t *vbl_swap;
- unsigned int pipe, seqtype, curseq;
+ unsigned int pipe, seqtype, curseq, plane;
unsigned long irqflags;
struct list_head *list;
+ int ret;
if (!dev_priv) {
DRM_ERROR("%s called with no initialization\n", __func__);
return -EINVAL;
}
- if (dev_priv->sarea_priv->rotation) {
+ if (!dev_priv->sarea_priv || dev_priv->sarea_priv->rotation) {
DRM_DEBUG("Rotation not supported\n");
return -EINVAL;
}
if (swap->seqtype & ~(_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE |
- _DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS)) {
+ _DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS |
+ _DRM_VBLANK_FLIP)) {
DRM_ERROR("Invalid sequence type 0x%x\n", swap->seqtype);
return -EINVAL;
}
- pipe = (swap->seqtype & _DRM_VBLANK_SECONDARY) ? 1 : 0;
+ plane = (swap->seqtype & _DRM_VBLANK_SECONDARY) ? 1 : 0;
+ pipe = i915_get_pipe(dev, plane);
seqtype = swap->seqtype & (_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE);
@@ -515,6 +743,11 @@ int i915_vblank_swap(struct drm_device *dev, void *data,
spin_lock_irqsave(&dev->drw_lock, irqflags);
+ /* It makes no sense to schedule a swap for a drawable that doesn't have
+ * valid information at this point. E.g. this could mean that the X
+ * server is too old to push drawable information to the DRM, in which
+ * case all such swaps would become ineffective.
+ */
if (!drm_get_drawable_info(dev, swap->drawable)) {
spin_unlock_irqrestore(&dev->drw_lock, irqflags);
DRM_DEBUG("Invalid drawable ID %d\n", swap->drawable);
@@ -523,7 +756,8 @@ int i915_vblank_swap(struct drm_device *dev, void *data,
spin_unlock_irqrestore(&dev->drw_lock, irqflags);
- curseq = atomic_read(pipe ? &dev->vbl_received2 : &dev->vbl_received);
+ drm_update_vblank_count(dev, pipe);
+ curseq = drm_vblank_count(dev, pipe);
if (seqtype == _DRM_VBLANK_RELATIVE)
swap->sequence += curseq;
@@ -537,14 +771,43 @@ int i915_vblank_swap(struct drm_device *dev, void *data,
}
}
+ if (swap->seqtype & _DRM_VBLANK_FLIP) {
+ swap->sequence--;
+
+ if ((curseq - swap->sequence) <= (1<<23)) {
+ struct drm_drawable_info *drw;
+
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ spin_lock_irqsave(&dev->drw_lock, irqflags);
+
+ drw = drm_get_drawable_info(dev, swap->drawable);
+
+ if (!drw) {
+ spin_unlock_irqrestore(&dev->drw_lock,
+ irqflags);
+ DRM_DEBUG("Invalid drawable ID %d\n",
+ swap->drawable);
+ return -EINVAL;
+ }
+
+ i915_dispatch_vsync_flip(dev, drw, plane);
+
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+
+ return 0;
+ }
+ }
+
spin_lock_irqsave(&dev_priv->swaps_lock, irqflags);
list_for_each(list, &dev_priv->vbl_swaps.head) {
vbl_swap = list_entry(list, drm_i915_vbl_swap_t, head);
if (vbl_swap->drw_id == swap->drawable &&
- vbl_swap->pipe == pipe &&
+ vbl_swap->plane == plane &&
vbl_swap->sequence == swap->sequence) {
+ vbl_swap->flip = (swap->seqtype & _DRM_VBLANK_FLIP);
spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
DRM_DEBUG("Already scheduled\n");
return 0;
@@ -567,9 +830,19 @@ int i915_vblank_swap(struct drm_device *dev, void *data,
DRM_DEBUG("\n");
+ ret = drm_vblank_get(dev, pipe);
+ if (ret) {
+ drm_free(vbl_swap, sizeof(*vbl_swap), DRM_MEM_DRIVER);
+ return ret;
+ }
+
vbl_swap->drw_id = swap->drawable;
- vbl_swap->pipe = pipe;
+ vbl_swap->plane = plane;
vbl_swap->sequence = swap->sequence;
+ vbl_swap->flip = (swap->seqtype & _DRM_VBLANK_FLIP);
+
+ if (vbl_swap->flip)
+ swap->sequence++;
spin_lock_irqsave(&dev_priv->swaps_lock, irqflags);
@@ -587,37 +860,57 @@ void i915_driver_irq_preinstall(struct drm_device * dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- I915_WRITE16(I915REG_HWSTAM, 0xfffe);
+ I915_WRITE16(I915REG_HWSTAM, 0xeffe);
I915_WRITE16(I915REG_INT_MASK_R, 0x0);
I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
}
-void i915_driver_irq_postinstall(struct drm_device * dev)
+int i915_driver_irq_postinstall(struct drm_device * dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ int ret, num_pipes = 2;
spin_lock_init(&dev_priv->swaps_lock);
INIT_LIST_HEAD(&dev_priv->vbl_swaps.head);
dev_priv->swaps_pending = 0;
- if (!dev_priv->vblank_pipe)
- dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A;
+ dev_priv->user_irq_refcount = 0;
+ dev_priv->irq_enable_reg = 0;
+
+ ret = drm_vblank_init(dev, num_pipes);
+ if (ret)
+ return ret;
+
+ dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
+
i915_enable_interrupt(dev);
DRM_INIT_WAITQUEUE(&dev_priv->irq_queue);
+
+ /*
+ * Initialize the hardware status page IRQ location.
+ */
+
+ I915_WRITE(I915REG_INSTPM, (1 << 5) | (1 << 21));
+ return 0;
}
void i915_driver_irq_uninstall(struct drm_device * dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u16 temp;
+ u32 temp;
if (!dev_priv)
return;
- I915_WRITE16(I915REG_HWSTAM, 0xffff);
- I915_WRITE16(I915REG_INT_MASK_R, 0xffff);
- I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
-
- temp = I915_READ16(I915REG_INT_IDENTITY_R);
- I915_WRITE16(I915REG_INT_IDENTITY_R, temp);
+ dev_priv->irq_enabled = 0;
+ I915_WRITE(I915REG_HWSTAM, 0xffffffff);
+ I915_WRITE(I915REG_INT_MASK_R, 0xffffffff);
+ I915_WRITE(I915REG_INT_ENABLE_R, 0x0);
+
+ temp = I915_READ(I915REG_PIPEASTAT);
+ I915_WRITE(I915REG_PIPEASTAT, temp);
+ temp = I915_READ(I915REG_PIPEBSTAT);
+ I915_WRITE(I915REG_PIPEBSTAT, temp);
+ temp = I915_READ(I915REG_INT_IDENTITY_R);
+ I915_WRITE(I915REG_INT_IDENTITY_R, temp);
}
diff --git a/drivers/char/drm/mga_drv.c b/drivers/char/drm/mga_drv.c
index 5572939fc7d..6b3790939e7 100644
--- a/drivers/char/drm/mga_drv.c
+++ b/drivers/char/drm/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,
diff --git a/drivers/char/drm/mga_drv.h b/drivers/char/drm/mga_drv.h
index f6ebd24bd58..8f7291f3636 100644
--- a/drivers/char/drm/mga_drv.h
+++ b/drivers/char/drm/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/char/drm/mga_irq.c b/drivers/char/drm/mga_irq.c
index 9302cb8f0f8..06852fb4b27 100644
--- a/drivers/char/drm/mga_irq.c
+++ b/drivers/char/drm/mga_irq.c
@@ -35,6 +35,20 @@
#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 +61,8 @@ 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;
}
@@ -78,22 +91,34 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
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 +150,22 @@ 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/char/drm/r128_drv.c b/drivers/char/drm/r128_drv.c
index 6108e7587e1..2888aa01ebc 100644
--- a/drivers/char/drm/r128_drv.c
+++ b/drivers/char/drm/r128_drv.c
@@ -43,12 +43,13 @@ static struct pci_device_id pciidlist[] = {
static struct drm_driver driver = {
.driver_features =
DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
- 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_r128_buf_priv_t),
.preclose = r128_driver_preclose,
.lastclose = r128_driver_lastclose,
- .vblank_wait = r128_driver_vblank_wait,
+ .get_vblank_counter = r128_get_vblank_counter,
+ .enable_vblank = r128_enable_vblank,
+ .disable_vblank = r128_disable_vblank,
.irq_preinstall = r128_driver_irq_preinstall,
.irq_postinstall = r128_driver_irq_postinstall,
.irq_uninstall = r128_driver_irq_uninstall,
diff --git a/drivers/char/drm/r128_drv.h b/drivers/char/drm/r128_drv.h
index 011105e51ac..80af9e09e75 100644
--- a/drivers/char/drm/r128_drv.h
+++ b/drivers/char/drm/r128_drv.h
@@ -97,6 +97,8 @@ typedef struct drm_r128_private {
u32 crtc_offset;
u32 crtc_offset_cntl;
+ atomic_t vbl_received;
+
u32 color_fmt;
unsigned int front_offset;
unsigned int front_pitch;
@@ -149,11 +151,12 @@ extern int r128_wait_ring(drm_r128_private_t * dev_priv, int n);
extern int r128_do_cce_idle(drm_r128_private_t * dev_priv);
extern int r128_do_cleanup_cce(struct drm_device * dev);
-extern int r128_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence);
-
+extern int r128_enable_vblank(struct drm_device *dev, int crtc);
+extern void r128_disable_vblank(struct drm_device *dev, int crtc);
+extern u32 r128_get_vblank_counter(struct drm_device *dev, int crtc);
extern irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS);
extern void r128_driver_irq_preinstall(struct drm_device * dev);
-extern void r128_driver_irq_postinstall(struct drm_device * dev);
+extern int r128_driver_irq_postinstall(struct drm_device * dev);
extern void r128_driver_irq_uninstall(struct drm_device * dev);
extern void r128_driver_lastclose(struct drm_device * dev);
extern void r128_driver_preclose(struct drm_device * dev,
diff --git a/drivers/char/drm/r128_irq.c b/drivers/char/drm/r128_irq.c
index c76fdca7662..5b95bd898f9 100644
--- a/drivers/char/drm/r128_irq.c
+++ b/drivers/char/drm/r128_irq.c
@@ -35,6 +35,16 @@
#include "r128_drm.h"
#include "r128_drv.h"
+u32 r128_get_vblank_counter(struct drm_device *dev, int crtc)
+{
+ const drm_r128_private_t *dev_priv = dev->dev_private;
+
+ if (crtc != 0)
+ return 0;
+
+ return atomic_read(&dev_priv->vbl_received);
+}
+
irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS)
{
struct drm_device *dev = (struct drm_device *) arg;
@@ -46,30 +56,38 @@ irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS)
/* VBLANK interrupt */
if (status & R128_CRTC_VBLANK_INT) {
R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK);
- 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);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
-int r128_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence)
+int r128_enable_vblank(struct drm_device *dev, int crtc)
{
- unsigned int cur_vblank;
- int ret = 0;
+ drm_r128_private_t *dev_priv = 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("%s: bad crtc %d\n", __FUNCTION__, crtc);
+ return -EINVAL;
+ }
- *sequence = cur_vblank;
+ R128_WRITE(R128_GEN_INT_CNTL, R128_CRTC_VBLANK_INT_EN);
+ return 0;
+}
+
+void r128_disable_vblank(struct drm_device *dev, int crtc)
+{
+ if (crtc != 0)
+ DRM_ERROR("%s: bad crtc %d\n", __FUNCTION__, crtc);
- return ret;
+ /*
+ * FIXME: implement proper interrupt disable by using the vblank
+ * counter register (if available)
+ *
+ * R128_WRITE(R128_GEN_INT_CNTL,
+ * R128_READ(R128_GEN_INT_CNTL) & ~R128_CRTC_VBLANK_INT_EN);
+ */
}
void r128_driver_irq_preinstall(struct drm_device * dev)
@@ -82,12 +100,9 @@ void r128_driver_irq_preinstall(struct drm_device * dev)
R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK);
}
-void r128_driver_irq_postinstall(struct drm_device * dev)
+int r128_driver_irq_postinstall(struct drm_device * dev)
{
- drm_r128_private_t *dev_priv = (drm_r128_private_t *) dev->dev_private;
-
- /* Turn on VBL interrupt */
- R128_WRITE(R128_GEN_INT_CNTL, R128_CRTC_VBLANK_INT_EN);
+ return drm_vblank_init(dev, 1);
}
void r128_driver_irq_uninstall(struct drm_device * dev)
diff --git a/drivers/char/drm/radeon_drv.c b/drivers/char/drm/radeon_drv.c
index 349ac3d3b84..a2610319624 100644
--- a/drivers/char/drm/radeon_drv.c
+++ b/drivers/char/drm/radeon_drv.c
@@ -59,8 +59,7 @@ static struct pci_device_id pciidlist[] = {
static struct drm_driver driver = {
.driver_features =
DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
- DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED |
- DRIVER_IRQ_VBL | DRIVER_IRQ_VBL2,
+ DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED,
.dev_priv_size = sizeof(drm_radeon_buf_priv_t),
.load = radeon_driver_load,
.firstopen = radeon_driver_firstopen,
@@ -69,8 +68,9 @@ static struct drm_driver driver = {
.postclose = radeon_driver_postclose,
.lastclose = radeon_driver_lastclose,
.unload = radeon_driver_unload,
- .vblank_wait = radeon_driver_vblank_wait,
- .vblank_wait2 = radeon_driver_vblank_wait2,
+ .get_vblank_counter = radeon_get_vblank_counter,
+ .enable_vblank = radeon_enable_vblank,
+ .disable_vblank = radeon_disable_vblank,
.dri_library_name = dri_library_name,
.irq_preinstall = radeon_driver_irq_preinstall,
.irq_postinstall = radeon_driver_irq_postinstall,
diff --git a/drivers/char/drm/radeon_drv.h b/drivers/char/drm/radeon_drv.h
index 173ae620223..b791420bd3d 100644
--- a/drivers/char/drm/radeon_drv.h
+++ b/drivers/char/drm/radeon_drv.h
@@ -304,6 +304,9 @@ typedef struct drm_radeon_private {
u32 scratch_ages[5];
+ unsigned int crtc_last_cnt;
+ unsigned int crtc2_last_cnt;
+
/* starting from here on, data is preserved accross an open */
uint32_t flags; /* see radeon_chip_flags */
unsigned long fb_aper_offset;
@@ -374,13 +377,13 @@ extern int radeon_irq_emit(struct drm_device *dev, void *data, struct drm_file *
extern int radeon_irq_wait(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern void radeon_do_release(struct drm_device * dev);
-extern int radeon_driver_vblank_wait(struct drm_device * dev,
- unsigned int *sequence);
-extern int radeon_driver_vblank_wait2(struct drm_device * dev,
- unsigned int *sequence);
+extern u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc);
+extern int radeon_enable_vblank(struct drm_device *dev, int crtc);
+extern void radeon_disable_vblank(struct drm_device *dev, int crtc);
+extern void radeon_do_release(struct drm_device * dev);
extern irqreturn_t radeon_driver_irq_handler(DRM_IRQ_ARGS);
extern void radeon_driver_irq_preinstall(struct drm_device * dev);
-extern void radeon_driver_irq_postinstall(struct drm_device * dev);
+extern int radeon_driver_irq_postinstall(struct drm_device * dev);
extern void radeon_driver_irq_uninstall(struct drm_device * dev);
extern int radeon_vblank_crtc_get(struct drm_device *dev);
extern int radeon_vblank_crtc_set(struct drm_device *dev, int64_t value);
@@ -558,6 +561,12 @@ extern int r300_do_cp_cmdbuf(struct drm_device * dev,
? DRM_READ32( dev_priv->ring_rptr, RADEON_SCRATCHOFF(x) ) \
: RADEON_READ( RADEON_SCRATCH_REG0 + 4*(x) ) )
+#define RADEON_CRTC_CRNT_FRAME 0x0214
+#define RADEON_CRTC2_CRNT_FRAME 0x0314
+
+#define RADEON_CRTC_STATUS 0x005c
+#define RADEON_CRTC2_STATUS 0x03fc
+
#define RADEON_GEN_INT_CNTL 0x0040
# define RADEON_CRTC_VBLANK_MASK (1 << 0)
# define RADEON_CRTC2_VBLANK_MASK (1 << 9)
diff --git a/drivers/char/drm/radeon_irq.c b/drivers/char/drm/radeon_irq.c
index 009af3814b6..507d6b747a1 100644
--- a/drivers/char/drm/radeon_irq.c
+++ b/drivers/char/drm/radeon_irq.c
@@ -35,12 +35,61 @@
#include "radeon_drm.h"
#include "radeon_drv.h"
-static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t * dev_priv,
- u32 mask)
+static void radeon_irq_set_state(struct drm_device *dev, u32 mask, int state)
{
- u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS) & 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);
+
if (irqs)
RADEON_WRITE(RADEON_GEN_INT_STATUS, irqs);
+
return irqs;
}
@@ -72,39 +121,21 @@ 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, (RADEON_SW_INT_TEST_ACK |
- RADEON_CRTC_VBLANK_STAT |
- RADEON_CRTC2_VBLANK_STAT));
+ stat = radeon_acknowledge_irqs(dev_priv);
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|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);
- }
+ if (stat & RADEON_CRTC_VBLANK_STAT)
+ drm_handle_vblank(dev, 0);
+ if (stat & RADEON_CRTC2_VBLANK_STAT)
+ drm_handle_vblank(dev, 1);
return IRQ_HANDLED;
}
@@ -144,54 +175,27 @@ static int radeon_wait_irq(struct drm_device * dev, int swi_nr)
return ret;
}
-static int radeon_driver_vblank_do_wait(struct drm_device * dev,
- unsigned int *sequence, int crtc)
+u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc)
{
- 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;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ u32 crtc_cnt_reg, crtc_status_reg;
+
if (!dev_priv) {
DRM_ERROR("called with no initialization\n");
return -EINVAL;
}
- 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
+ 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 {
return -EINVAL;
+ }
- 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);
+ return RADEON_READ(crtc_cnt_reg) + (RADEON_READ(crtc_status_reg) & 1);
}
/* Needs the lock as it touches the ring.
@@ -234,21 +238,6 @@ int radeon_irq_wait(struct drm_device *dev, void *data, struct drm_file *file_pr
return radeon_wait_irq(dev, irqwait->irq_seq);
}
-static 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)
@@ -260,20 +249,27 @@ 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_SW_INT_TEST_ACK |
- RADEON_CRTC_VBLANK_STAT |
- RADEON_CRTC2_VBLANK_STAT));
+ radeon_acknowledge_irqs(dev_priv);
}
-void radeon_driver_irq_postinstall(struct drm_device * dev)
+int 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);
- radeon_enable_interrupt(dev);
+ 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;
}
void radeon_driver_irq_uninstall(struct drm_device * dev)
@@ -315,6 +311,5 @@ 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;
}
diff --git a/drivers/char/drm/via_drv.c b/drivers/char/drm/via_drv.c
index 80c01cdfa37..37870a4a3dc 100644
--- a/drivers/char/drm/via_drv.c
+++ b/drivers/char/drm/via_drv.c
@@ -40,11 +40,13 @@ static struct pci_device_id pciidlist[] = {
static struct drm_driver driver = {
.driver_features =
DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_IRQ |
- DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL,
+ DRIVER_IRQ_SHARED,
.load = via_driver_load,
.unload = via_driver_unload,
.context_dtor = via_final_context,
- .vblank_wait = via_driver_vblank_wait,
+ .get_vblank_counter = via_get_vblank_counter,
+ .enable_vblank = via_enable_vblank,
+ .disable_vblank = via_disable_vblank,
.irq_preinstall = via_driver_irq_preinstall,
.irq_postinstall = via_driver_irq_postinstall,
.irq_uninstall = via_driver_irq_uninstall,
diff --git a/drivers/char/drm/via_drv.h b/drivers/char/drm/via_drv.h
index 2daae81874c..fe67030e39a 100644
--- a/drivers/char/drm/via_drv.h
+++ b/drivers/char/drm/via_drv.h
@@ -75,6 +75,7 @@ typedef struct drm_via_private {
struct timeval last_vblank;
int last_vblank_valid;
unsigned usec_per_vblank;
+ atomic_t vbl_received;
drm_via_state_t hc_state;
char pci_buf[VIA_PCI_BUF_SIZE];
const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE];
@@ -130,11 +131,13 @@ extern int via_init_context(struct drm_device * dev, int context);
extern int via_final_context(struct drm_device * dev, int context);
extern int via_do_cleanup_map(struct drm_device * dev);
-extern int via_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence);
+extern u32 via_get_vblank_counter(struct drm_device *dev, int crtc);
+extern int via_enable_vblank(struct drm_device *dev, int crtc);
+extern void via_disable_vblank(struct drm_device *dev, int crtc);
extern irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS);
extern void via_driver_irq_preinstall(struct drm_device * dev);
-extern void via_driver_irq_postinstall(struct drm_device * dev);
+extern int via_driver_irq_postinstall(struct drm_device * dev);
extern void via_driver_irq_uninstall(struct drm_device * dev);
extern int via_dma_cleanup(struct drm_device * dev);
diff --git a/drivers/char/drm/via_irq.c b/drivers/char/drm/via_irq.c
index c6bb978a110..f1ab6fc7c07 100644
--- a/drivers/char/drm/via_irq.c
+++ b/drivers/char/drm/via_irq.c
@@ -92,8 +92,17 @@ static int via_irqmap_unichrome[] = {-1, -1, -1, 0, -1, 1};
static unsigned time_diff(struct timeval *now, struct timeval *then)
{
return (now->tv_usec >= then->tv_usec) ?
- now->tv_usec - then->tv_usec :
- 1000000 - (then->tv_usec - now->tv_usec);
+ now->tv_usec - then->tv_usec :
+ 1000000 - (then->tv_usec - now->tv_usec);
+}
+
+u32 via_get_vblank_counter(struct drm_device *dev, int crtc)
+{
+ drm_via_private_t *dev_priv = dev->dev_private;
+ if (crtc != 0)
+ return 0;
+
+ return atomic_read(&dev_priv->vbl_received);
}
irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
@@ -108,8 +117,8 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
status = VIA_READ(VIA_REG_INTERRUPT);
if (status & VIA_IRQ_VBLANK_PENDING) {
- atomic_inc(&dev->vbl_received);
- if (!(atomic_read(&dev->vbl_received) & 0x0F)) {
+ atomic_inc(&dev_priv->vbl_received);
+ if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) {
do_gettimeofday(&cur_vblank);
if (dev_priv->last_vblank_valid) {
dev_priv->usec_per_vblank =
@@ -119,12 +128,11 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
dev_priv->last_vblank = cur_vblank;
dev_priv->last_vblank_valid = 1;
}
- if (!(atomic_read(&dev->vbl_received) & 0xFF)) {
+ if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) {
DRM_DEBUG("US per vblank is: %u\n",
dev_priv->usec_per_vblank);
}
- DRM_WAKEUP(&dev->vbl_queue);
- drm_vbl_send_signals(dev);
+ drm_handle_vblank(dev, 0);
handled = 1;
}
@@ -163,31 +171,34 @@ static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t * dev_priv)
}
}
-int via_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence)
+int via_enable_vblank(struct drm_device *dev, int crtc)
{
- drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- unsigned int cur_vblank;
- int ret = 0;
+ drm_via_private_t *dev_priv = dev->dev_private;
+ u32 status;
- DRM_DEBUG("\n");
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
+ if (crtc != 0) {
+ DRM_ERROR("%s: bad crtc %d\n", __FUNCTION__, crtc);
return -EINVAL;
}
- viadrv_acknowledge_irqs(dev_priv);
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status & VIA_IRQ_VBLANK_ENABLE);
- /* 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...
- */
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
- DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
- (((cur_vblank = atomic_read(&dev->vbl_received)) -
- *sequence) <= (1 << 23)));
+ return 0;
+}
- *sequence = cur_vblank;
- return ret;
+void via_disable_vblank(struct drm_device *dev, int crtc)
+{
+ drm_via_private_t *dev_priv = dev->dev_private;
+
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30);
+
+ if (crtc != 0)
+ DRM_ERROR("%s: bad crtc %d\n", __FUNCTION__, crtc);
}
static int
@@ -292,23 +303,25 @@ void via_driver_irq_preinstall(struct drm_device * dev)
}
}
-void via_driver_irq_postinstall(struct drm_device * dev)
+int via_driver_irq_postinstall(struct drm_device * dev)
{
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
u32 status;
- DRM_DEBUG("\n");
- if (dev_priv) {
- status = VIA_READ(VIA_REG_INTERRUPT);
- VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
- | dev_priv->irq_enable_mask);
+ DRM_DEBUG("via_driver_irq_postinstall\n");
+ if (!dev_priv)
+ return -EINVAL;
- /* Some magic, oh for some data sheets ! */
+ drm_vblank_init(dev, 1);
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
+ | dev_priv->irq_enable_mask);
- VIA_WRITE8(0x83d4, 0x11);
- VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
+ /* Some magic, oh for some data sheets ! */
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
- }
+ return 0;
}
void via_driver_irq_uninstall(struct drm_device * dev)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 14:00:58 +0000