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-rw-r--r--drivers/gpu/drm/mga/mga_drv.c29
-rw-r--r--drivers/gpu/drm/mga/mga_drv.h6
-rw-r--r--drivers/gpu/drm/mga/mga_irq.c74
-rw-r--r--drivers/gpu/drm/mga/mga_state.c2
4 files changed, 74 insertions, 37 deletions
diff --git a/drivers/gpu/drm/mga/mga_drv.c b/drivers/gpu/drm/mga/mga_drv.c
index 5572939fc7d..97ee566ef74 100644
--- a/drivers/gpu/drm/mga/mga_drv.c
+++ b/drivers/gpu/drm/mga/mga_drv.c
@@ -45,15 +45,16 @@ static struct pci_device_id pciidlist[] = {
static struct drm_driver driver = {
.driver_features =
DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA |
- DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
- DRIVER_IRQ_VBL,
+ DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
.dev_priv_size = sizeof(drm_mga_buf_priv_t),
.load = mga_driver_load,
.unload = mga_driver_unload,
.lastclose = mga_driver_lastclose,
.dma_quiescent = mga_driver_dma_quiescent,
.device_is_agp = mga_driver_device_is_agp,
- .vblank_wait = mga_driver_vblank_wait,
+ .get_vblank_counter = mga_get_vblank_counter,
+ .enable_vblank = mga_enable_vblank,
+ .disable_vblank = mga_disable_vblank,
.irq_preinstall = mga_driver_irq_preinstall,
.irq_postinstall = mga_driver_irq_postinstall,
.irq_uninstall = mga_driver_irq_uninstall,
@@ -64,20 +65,20 @@ static struct drm_driver driver = {
.ioctls = mga_ioctls,
.dma_ioctl = mga_dma_buffers,
.fops = {
- .owner = THIS_MODULE,
- .open = drm_open,
- .release = drm_release,
- .ioctl = drm_ioctl,
- .mmap = drm_mmap,
- .poll = drm_poll,
- .fasync = drm_fasync,
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .ioctl = drm_ioctl,
+ .mmap = drm_mmap,
+ .poll = drm_poll,
+ .fasync = drm_fasync,
#ifdef CONFIG_COMPAT
- .compat_ioctl = mga_compat_ioctl,
+ .compat_ioctl = mga_compat_ioctl,
#endif
- },
+ },
.pci_driver = {
- .name = DRIVER_NAME,
- .id_table = pciidlist,
+ .name = DRIVER_NAME,
+ .id_table = pciidlist,
},
.name = DRIVER_NAME,
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h
index f6ebd24bd58..88257c276eb 100644
--- a/drivers/gpu/drm/mga/mga_drv.h
+++ b/drivers/gpu/drm/mga/mga_drv.h
@@ -120,6 +120,7 @@ typedef struct drm_mga_private {
u32 clear_cmd;
u32 maccess;
+ atomic_t vbl_received; /**< Number of vblanks received. */
wait_queue_head_t fence_queue;
atomic_t last_fence_retired;
u32 next_fence_to_post;
@@ -181,11 +182,14 @@ extern int mga_warp_install_microcode(drm_mga_private_t * dev_priv);
extern int mga_warp_init(drm_mga_private_t * dev_priv);
/* mga_irq.c */
+extern int mga_enable_vblank(struct drm_device *dev, int crtc);
+extern void mga_disable_vblank(struct drm_device *dev, int crtc);
+extern u32 mga_get_vblank_counter(struct drm_device *dev, int crtc);
extern int mga_driver_fence_wait(struct drm_device * dev, unsigned int *sequence);
extern int mga_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence);
extern irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS);
extern void mga_driver_irq_preinstall(struct drm_device * dev);
-extern void mga_driver_irq_postinstall(struct drm_device * dev);
+extern int mga_driver_irq_postinstall(struct drm_device *dev);
extern void mga_driver_irq_uninstall(struct drm_device * dev);
extern long mga_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg);
diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c
index 9302cb8f0f8..bab42f41188 100644
--- a/drivers/gpu/drm/mga/mga_irq.c
+++ b/drivers/gpu/drm/mga/mga_irq.c
@@ -1,5 +1,6 @@
/* mga_irq.c -- IRQ handling for radeon -*- linux-c -*-
- *
+ */
+/*
* Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
*
* The Weather Channel (TM) funded Tungsten Graphics to develop the
@@ -35,6 +36,18 @@
#include "mga_drm.h"
#include "mga_drv.h"
+u32 mga_get_vblank_counter(struct drm_device *dev, int crtc)
+{
+ const drm_mga_private_t *const dev_priv =
+ (drm_mga_private_t *) dev->dev_private;
+
+ if (crtc != 0)
+ return 0;
+
+ return atomic_read(&dev_priv->vbl_received);
+}
+
+
irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
{
struct drm_device *dev = (struct drm_device *) arg;
@@ -47,9 +60,8 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
/* VBLANK interrupt */
if (status & MGA_VLINEPEN) {
MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR);
- atomic_inc(&dev->vbl_received);
- DRM_WAKEUP(&dev->vbl_queue);
- drm_vbl_send_signals(dev);
+ atomic_inc(&dev_priv->vbl_received);
+ drm_handle_vblank(dev, 0);
handled = 1;
}
@@ -58,6 +70,7 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
const u32 prim_start = MGA_READ(MGA_PRIMADDRESS);
const u32 prim_end = MGA_READ(MGA_PRIMEND);
+
MGA_WRITE(MGA_ICLEAR, MGA_SOFTRAPICLR);
/* In addition to clearing the interrupt-pending bit, we
@@ -72,28 +85,39 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
handled = 1;
}
- if (handled) {
+ if (handled)
return IRQ_HANDLED;
- }
return IRQ_NONE;
}
-int mga_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence)
+int mga_enable_vblank(struct drm_device *dev, int crtc)
{
- unsigned int cur_vblank;
- int ret = 0;
+ drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
- /* Assume that the user has missed the current sequence number
- * by about a day rather than she wants to wait for years
- * using vertical blanks...
- */
- DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
- (((cur_vblank = atomic_read(&dev->vbl_received))
- - *sequence) <= (1 << 23)));
+ if (crtc != 0) {
+ DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
+ crtc);
+ return 0;
+ }
- *sequence = cur_vblank;
+ MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN);
+ return 0;
+}
- return ret;
+
+void mga_disable_vblank(struct drm_device *dev, int crtc)
+{
+ if (crtc != 0) {
+ DRM_ERROR("tried to disable vblank on non-existent crtc %d\n",
+ crtc);
+ }
+
+ /* Do *NOT* disable the vertical refresh interrupt. MGA doesn't have
+ * a nice hardware counter that tracks the number of refreshes when
+ * the interrupt is disabled, and the kernel doesn't know the refresh
+ * rate to calculate an estimate.
+ */
+ /* MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN); */
}
int mga_driver_fence_wait(struct drm_device * dev, unsigned int *sequence)
@@ -125,14 +149,22 @@ void mga_driver_irq_preinstall(struct drm_device * dev)
MGA_WRITE(MGA_ICLEAR, ~0);
}
-void mga_driver_irq_postinstall(struct drm_device * dev)
+int mga_driver_irq_postinstall(struct drm_device *dev)
{
drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
+ int ret;
+
+ ret = drm_vblank_init(dev, 1);
+ if (ret)
+ return ret;
DRM_INIT_WAITQUEUE(&dev_priv->fence_queue);
- /* Turn on vertical blank interrupt and soft trap interrupt. */
- MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN);
+ /* Turn on soft trap interrupt. Vertical blank interrupts are enabled
+ * in mga_enable_vblank.
+ */
+ MGA_WRITE(MGA_IEN, MGA_SOFTRAPEN);
+ return 0;
}
void mga_driver_irq_uninstall(struct drm_device * dev)
diff --git a/drivers/gpu/drm/mga/mga_state.c b/drivers/gpu/drm/mga/mga_state.c
index d3f8aade07b..b710fab21cb 100644
--- a/drivers/gpu/drm/mga/mga_state.c
+++ b/drivers/gpu/drm/mga/mga_state.c
@@ -1022,7 +1022,7 @@ static int mga_getparam(struct drm_device *dev, void *data, struct drm_file *fil
switch (param->param) {
case MGA_PARAM_IRQ_NR:
- value = dev->irq;
+ value = drm_dev_to_irq(dev);
break;
case MGA_PARAM_CARD_TYPE:
value = dev_priv->chipset;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 01:15:33 +0000