From b6610363e373c13a2e7fdee8691756e1768bdd57 Mon Sep 17 00:00:00 2001
From: Jesse Barnes <jbarnes@jbarnes-mobile.amr.corp.intel.com>
Date: Fri, 15 Jun 2007 11:21:57 -0700
Subject: First cut at radeon support for the vblank rework.
---
shared-core/radeon_drv.h | 12 ++--
shared-core/radeon_irq.c | 158 ++++++++++++++++++++---------------------------
2 files changed, 75 insertions(+), 95 deletions(-)
(limited to 'shared-core')
diff --git a/shared-core/radeon_drv.h b/shared-core/radeon_drv.h
index 283dee33..5f671df6 100644
--- a/shared-core/radeon_drv.h
+++ b/shared-core/radeon_drv.h
@@ -366,13 +366,12 @@ extern int radeon_irq_emit(DRM_IOCTL_ARGS);
extern int radeon_irq_wait(DRM_IOCTL_ARGS);
extern void radeon_do_release(drm_device_t * dev);
-extern int radeon_driver_vblank_wait(drm_device_t * dev,
- unsigned int *sequence, int relative);
-extern int radeon_driver_vblank_wait2(drm_device_t * dev,
- unsigned int *sequence, int relative);
+extern u32 radeon_get_vblank_counter(drm_device_t *dev, int crtc);
+extern int radeon_enable_vblank(drm_device_t *dev, int crtc);
+extern void radeon_disable_vblank(drm_device_t *dev, int crtc);
extern irqreturn_t radeon_driver_irq_handler(DRM_IRQ_ARGS);
extern void radeon_driver_irq_preinstall(drm_device_t * dev);
-extern void radeon_driver_irq_postinstall(drm_device_t * dev);
+extern int radeon_driver_irq_postinstall(drm_device_t * dev);
extern void radeon_driver_irq_uninstall(drm_device_t * dev);
extern int radeon_vblank_crtc_get(drm_device_t *dev);
extern int radeon_vblank_crtc_set(drm_device_t *dev, int64_t value);
@@ -513,6 +512,9 @@ extern int r300_do_cp_cmdbuf(drm_device_t *dev, DRMFILE filp,
#define RADEON_CRTC_CRNT_FRAME 0x0214
#define RADEON_CRTC2_CRNT_FRAME 0x0314
+#define RADEON_CRTC_CRNT_FRAME 0x0214
+#define RADEON_CRTC2_CRNT_FRAME 0x0314
+
#define RADEON_GEN_INT_CNTL 0x0040
# define RADEON_CRTC_VBLANK_MASK (1 << 0)
# define RADEON_CRTC2_VBLANK_MASK (1 << 9)
diff --git a/shared-core/radeon_irq.c b/shared-core/radeon_irq.c
index 2534ff10..46ec035d 100644
--- a/shared-core/radeon_irq.c
+++ b/shared-core/radeon_irq.c
@@ -47,6 +47,50 @@ static void radeon_irq_set_state(drm_device_t *dev, u32 mask, int state)
RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
}
+int radeon_enable_vblank(drm_device_t *dev, int crtc)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ if (!(dev_priv->vblank_crtc & (1 << crtc)))
+ return -EINVAL;
+
+ 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);
+ break;
+ }
+
+ return 0;
+}
+
+void radeon_disable_vblank(drm_device_t *dev, int crtc)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ if (!(dev_priv->vblank_crtc & (1 << crtc)))
+ return;
+
+ 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 mask)
{
@@ -89,30 +133,14 @@ irqreturn_t radeon_driver_irq_handler(DRM_IRQ_ARGS)
return IRQ_NONE;
/* 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;
}
@@ -152,80 +180,21 @@ static int radeon_wait_irq(drm_device_t * dev, int swi_nr)
return ret;
}
-int radeon_driver_vblank_do_wait(drm_device_t * dev, unsigned int *sequence,
- int crtc, int relative)
+u32 radeon_get_vblank_counter(drm_device_t *dev, int crtc)
{
- drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *) dev->dev_private;
- unsigned int cur_vblank, diff, irqflags, current_cnt;
- int ret = 0;
- int ack = 0;
- atomic_t *counter;
- unsigned int *last_cnt;
- int crtc_cnt_reg;
-
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
- return DRM_ERR(EINVAL);
- }
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ u32 crtc_cnt_reg, current_cnt;
- if (crtc == DRM_RADEON_VBLANK_CRTC1) {
- counter = &dev->vbl_received;
- ack = RADEON_CRTC_VBLANK_STAT;
- last_cnt = &dev_priv->crtc_last_cnt;
+ if (crtc == DRM_RADEON_VBLANK_CRTC1)
crtc_cnt_reg = RADEON_CRTC_CRNT_FRAME;
- } else if (crtc == DRM_RADEON_VBLANK_CRTC2) {
- counter = &dev->vbl_received2;
- ack = RADEON_CRTC2_VBLANK_STAT;
- last_cnt = &dev_priv->crtc2_last_cnt;
+ else if (crtc == DRM_RADEON_VBLANK_CRTC2)
crtc_cnt_reg = RADEON_CRTC2_CRNT_FRAME;
- } else
- return DRM_ERR(EINVAL);
-
- radeon_acknowledge_irqs(dev_priv, ack);
-
- dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
-
- if (!relative) {
- /*
- * Assume we haven't missed more than several hours of vblank
- * events, or that it won't matter if they're not accounted
- * for in the master counter.
- */
- spin_lock_irqsave(&dev->vbl_lock, irqflags);
- current_cnt = RADEON_READ(crtc_cnt_reg);
- if (current_cnt < *last_cnt) {
- current_cnt += (1 << 21) - *last_cnt;
- *last_cnt = 0;
- }
- diff = current_cnt - *last_cnt;
- *last_cnt = RADEON_READ(crtc_cnt_reg);
- spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
- atomic_add(diff, counter);
- }
-
- /* 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...
- */
- radeon_irq_set_state(dev, ack, 1);
- DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
- (((cur_vblank = atomic_read(counter))
- - *sequence) <= (1 << 23)));
- radeon_irq_set_state(dev, ack, 0);
- *sequence = cur_vblank;
-
- return ret;
-}
+ else
+ return 0;
-int radeon_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence, int relative)
-{
- return radeon_driver_vblank_do_wait(dev, sequence, DRM_RADEON_VBLANK_CRTC1, relative);
-}
+ current_cnt = RADEON_READ(crtc_cnt_reg);
-int radeon_driver_vblank_wait2(drm_device_t *dev, unsigned int *sequence, int relative)
-{
- return radeon_driver_vblank_do_wait(dev, sequence, DRM_RADEON_VBLANK_CRTC2, relative);
+ return current_cnt;
}
/* Needs the lock as it touches the ring.
@@ -294,15 +263,24 @@ void radeon_driver_irq_preinstall(drm_device_t * dev)
RADEON_CRTC2_VBLANK_STAT));
}
-void radeon_driver_irq_postinstall(drm_device_t * dev)
+int radeon_driver_irq_postinstall(drm_device_t * dev)
{
drm_radeon_private_t *dev_priv =
(drm_radeon_private_t *) dev->dev_private;
+ int num_pipes = 2, ret;
atomic_set(&dev_priv->swi_emitted, 0);
DRM_INIT_WAITQUEUE(&dev_priv->swi_queue);
+ ret = drm_vblank_init(dev, num_pipes);
+ if (ret)
+ return ret;
+
+ dev->max_vblank_count = 0xffffffff;
+
radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
+
+ return 0;
}
void radeon_driver_irq_uninstall(drm_device_t * dev)
--
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