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-rw-r--r--linux-core/i810_dma.c126
-rw-r--r--linux-core/i810_drm.h4
-rw-r--r--linux-core/i810_drv.h20
-rw-r--r--linux/i810.h12
-rw-r--r--linux/i810_dma.c126
-rw-r--r--linux/i810_drm.h4
-rw-r--r--linux/i810_drv.h20
7 files changed, 289 insertions, 23 deletions
diff --git a/linux-core/i810_dma.c b/linux-core/i810_dma.c
index 678610c6..8042b7fc 100644
--- a/linux-core/i810_dma.c
+++ b/linux-core/i810_dma.c
@@ -289,10 +289,12 @@ static int i810_wait_ring(drm_device_t *dev, int n)
ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
ring->space = ring->head - (ring->tail+8);
if (ring->space < 0) ring->space += ring->Size;
-
- if (ring->head != last_head)
- end = jiffies + (HZ*3);
-
+
+ if (ring->head != last_head) {
+ end = jiffies + (HZ*3);
+ last_head = ring->head;
+ }
+
iters++;
if(time_before(end, jiffies)) {
DRM_ERROR("space: %d wanted %d\n", ring->space, n);
@@ -410,6 +412,7 @@ static int i810_dma_initialize(drm_device_t *dev,
dev_priv->pitch = init->pitch;
dev_priv->back_offset = init->back_offset;
dev_priv->depth_offset = init->depth_offset;
+ dev_priv->front_offset = init->front_offset;
dev_priv->overlay_offset = init->overlay_offset;
dev_priv->overlay_physical = init->overlay_physical;
@@ -589,6 +592,8 @@ static void i810EmitState( drm_device_t *dev )
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
unsigned int dirty = sarea_priv->dirty;
+
+ DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
if (dirty & I810_UPLOAD_BUFFERS) {
i810EmitDestVerified( dev, sarea_priv->BufferState );
@@ -627,6 +632,14 @@ static void i810_dma_dispatch_clear( drm_device_t *dev, int flags,
int cpp = 2;
int i;
RING_LOCALS;
+
+ if ( dev_priv->current_page == 1 ) {
+ unsigned int tmp = flags;
+
+ flags &= ~(I810_FRONT | I810_BACK);
+ if (tmp & I810_FRONT) flags |= I810_BACK;
+ if (tmp & I810_BACK) flags |= I810_FRONT;
+ }
i810_kernel_lost_context(dev);
@@ -692,10 +705,11 @@ static void i810_dma_dispatch_swap( drm_device_t *dev )
drm_clip_rect_t *pbox = sarea_priv->boxes;
int pitch = dev_priv->pitch;
int cpp = 2;
- int ofs = dev_priv->back_offset;
int i;
RING_LOCALS;
+ DRM_DEBUG("swapbuffers\n");
+
i810_kernel_lost_context(dev);
if (nbox > I810_NR_SAREA_CLIPRECTS)
@@ -706,7 +720,7 @@ static void i810_dma_dispatch_swap( drm_device_t *dev )
unsigned int w = pbox->x2 - pbox->x1;
unsigned int h = pbox->y2 - pbox->y1;
unsigned int dst = pbox->x1*cpp + pbox->y1*pitch;
- unsigned int start = ofs + dst;
+ unsigned int start = dst;
if (pbox->x1 > pbox->x2 ||
pbox->y1 > pbox->y2 ||
@@ -718,9 +732,15 @@ static void i810_dma_dispatch_swap( drm_device_t *dev )
OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4 );
OUT_RING( pitch | (0xCC << 16));
OUT_RING( (h << 16) | (w * cpp));
- OUT_RING( dst );
+ if (dev_priv->current_page == 0)
+ OUT_RING(dev_priv->front_offset + start);
+ else
+ OUT_RING(dev_priv->back_offset + start);
OUT_RING( pitch );
- OUT_RING( start );
+ if (dev_priv->current_page == 0)
+ OUT_RING(dev_priv->back_offset + start);
+ else
+ OUT_RING(dev_priv->front_offset + start);
ADVANCE_LP_RING();
}
}
@@ -807,6 +827,52 @@ static void i810_dma_dispatch_vertex(drm_device_t *dev,
}
}
+static void i810_dma_dispatch_flip( drm_device_t *dev )
+{
+ drm_i810_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+ int pitch = dev_priv->pitch;
+
+ DRM_DEBUG( "%s: page=%d pfCurrentPage=%d\n",
+ __FUNCTION__,
+ dev_priv->current_page,
+ dev_priv->sarea_priv->pf_current_page);
+
+ i810_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();
+
+ BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
+ /* On i815 at least ASYNC is buggy */
+ /* pitch<<5 is from 11.2.8 p158,
+ its the pitch / 8 then left shifted 8,
+ so (pitch >> 3) << 8 */
+ OUT_RING( CMD_OP_FRONTBUFFER_INFO | (pitch<<5) /*| ASYNC_FLIP */ );
+ if ( dev_priv->current_page == 0 ) {
+ OUT_RING( dev_priv->back_offset );
+ dev_priv->current_page = 1;
+ } else {
+ OUT_RING( dev_priv->front_offset );
+ dev_priv->current_page = 0;
+ }
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+
+ BEGIN_LP_RING(2);
+ OUT_RING( CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP );
+ OUT_RING( 0 );
+ ADVANCE_LP_RING();
+
+ /* Increment the frame counter. The client-side 3D driver must
+ * throttle the framerate by waiting for this value before
+ * performing the swapbuffer ioctl.
+ */
+ dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
+
+}
void i810_dma_quiescent(drm_device_t *dev)
{
@@ -1198,3 +1264,47 @@ int i810_ov0_flip(struct inode *inode, struct file *filp,
}
+/* Not sure why this isn't set all the time:
+ */
+static void i810_do_init_pageflip( drm_device_t *dev )
+{
+ drm_i810_private_t *dev_priv = dev->dev_private;
+
+ DRM_DEBUG("%s\n", __FUNCTION__);
+ dev_priv->page_flipping = 1;
+ dev_priv->current_page = 0;
+ dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
+}
+
+int i810_do_cleanup_pageflip( drm_device_t *dev )
+{
+ drm_i810_private_t *dev_priv = dev->dev_private;
+
+ DRM_DEBUG("%s\n", __FUNCTION__);
+ if (dev_priv->current_page != 0)
+ i810_dma_dispatch_flip( dev );
+
+ dev_priv->page_flipping = 0;
+ return 0;
+}
+
+int i810_flip_bufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ drm_i810_private_t *dev_priv = dev->dev_private;
+
+ DRM_DEBUG("%s\n", __FUNCTION__);
+
+ if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
+ DRM_ERROR("i810_flip_buf called without lock held\n");
+ return -EINVAL;
+ }
+
+ if (!dev_priv->page_flipping)
+ i810_do_init_pageflip( dev );
+
+ i810_dma_dispatch_flip( dev );
+ return 0;
+}
diff --git a/linux-core/i810_drm.h b/linux-core/i810_drm.h
index f8c27d83..b35593bd 100644
--- a/linux-core/i810_drm.h
+++ b/linux-core/i810_drm.h
@@ -166,6 +166,9 @@ typedef struct _drm_i810_sarea {
int vertex_prim;
+ int pf_enabled; /* is pageflipping allowed? */
+ int pf_active;
+ int pf_current_page; /* which buffer is being displayed? */
} drm_i810_sarea_t;
/* WARNING: If you change any of these defines, make sure to change the
@@ -189,6 +192,7 @@ typedef struct _drm_i810_sarea {
#define DRM_IOCTL_I810_OV0FLIP DRM_IO ( 0x4b)
#define DRM_IOCTL_I810_MC DRM_IOW( 0x4c, drm_i810_mc_t)
#define DRM_IOCTL_I810_RSTATUS DRM_IO ( 0x4d )
+#define DRM_IOCTL_I810_FLIP DRM_IO ( 0x4e )
typedef struct _drm_i810_clear {
int clear_color;
diff --git a/linux-core/i810_drv.h b/linux-core/i810_drv.h
index aa82c647..736c20d7 100644
--- a/linux-core/i810_drv.h
+++ b/linux-core/i810_drv.h
@@ -75,7 +75,20 @@ typedef struct drm_i810_private {
int overlay_physical;
int w, h;
int pitch;
+ int back_pitch;
+ int depth_pitch;
+ int do_boxes;
+ int dma_used;
+
+ int current_page;
+ int page_flipping;
+
+ wait_queue_head_t irq_queue;
+ atomic_t irq_received;
+ atomic_t irq_emitted;
+
+ int front_offset;
} drm_i810_private_t;
/* i810_dma.c */
@@ -124,6 +137,8 @@ int i810_swap_bufs(struct inode *inode, struct file *filp,
int i810_clear_bufs(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
+int i810_flip_bufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
#define I810_BASE(reg) ((unsigned long) \
dev_priv->mmio_map->handle)
@@ -225,12 +240,15 @@ int i810_clear_bufs(struct inode *inode, struct file *filp,
#define CMD_OP_Z_BUFFER_INFO ((0x0<<29)|(0x16<<23))
#define CMD_OP_DESTBUFFER_INFO ((0x0<<29)|(0x15<<23))
#define CMD_OP_FRONTBUFFER_INFO ((0x0<<29)|(0x14<<23))
+#define CMD_OP_WAIT_FOR_EVENT ((0x0<<29)|(0x03<<23))
#define BR00_BITBLT_CLIENT 0x40000000
#define BR00_OP_COLOR_BLT 0x10000000
#define BR00_OP_SRC_COPY_BLT 0x10C00000
#define BR13_SOLID_PATTERN 0x80000000
-
+#define WAIT_FOR_PLANE_A_SCANLINES (1<<1)
+#define WAIT_FOR_PLANE_A_FLIP (1<<2)
+#define WAIT_FOR_VBLANK (1<<3)
#endif
diff --git a/linux/i810.h b/linux/i810.h
index bfb760ab..ba40892f 100644
--- a/linux/i810.h
+++ b/linux/i810.h
@@ -45,7 +45,7 @@
#define DRIVER_NAME "i810"
#define DRIVER_DESC "Intel i810"
-#define DRIVER_DATE "20020211"
+#define DRIVER_DATE "20030605"
/* Interface history
*
@@ -54,10 +54,11 @@
* - XFree86 4.2
* 1.2.1 - Disable copying code (leave stub ioctls for backwards compatibility)
* - Remove requirement for interrupt (leave stubs again)
+ * 1.3 - Add page flipping.
*/
#define DRIVER_MAJOR 1
-#define DRIVER_MINOR 2
-#define DRIVER_PATCHLEVEL 1
+#define DRIVER_MINOR 3
+#define DRIVER_PATCHLEVEL 0
#define DRIVER_IOCTLS \
[DRM_IOCTL_NR(DRM_IOCTL_I810_INIT)] = { i810_dma_init, 1, 1 }, \
@@ -73,8 +74,9 @@
[DRM_IOCTL_NR(DRM_IOCTL_I810_FSTATUS)] = { i810_fstatus, 1, 0 }, \
[DRM_IOCTL_NR(DRM_IOCTL_I810_OV0FLIP)] = { i810_ov0_flip, 1, 0 }, \
[DRM_IOCTL_NR(DRM_IOCTL_I810_MC)] = { i810_dma_mc, 1, 1 }, \
- [DRM_IOCTL_NR(DRM_IOCTL_I810_RSTATUS)] = { i810_rstatus, 1, 0 }
-
+ [DRM_IOCTL_NR(DRM_IOCTL_I810_RSTATUS)] = { i810_rstatus, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_I810_FLIP)] = { i810_flip_bufs, 1, 0 }
+
#define __HAVE_COUNTERS 4
#define __HAVE_COUNTER6 _DRM_STAT_IRQ
diff --git a/linux/i810_dma.c b/linux/i810_dma.c
index 678610c6..8042b7fc 100644
--- a/linux/i810_dma.c
+++ b/linux/i810_dma.c
@@ -289,10 +289,12 @@ static int i810_wait_ring(drm_device_t *dev, int n)
ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
ring->space = ring->head - (ring->tail+8);
if (ring->space < 0) ring->space += ring->Size;
-
- if (ring->head != last_head)
- end = jiffies + (HZ*3);
-
+
+ if (ring->head != last_head) {
+ end = jiffies + (HZ*3);
+ last_head = ring->head;
+ }
+
iters++;
if(time_before(end, jiffies)) {
DRM_ERROR("space: %d wanted %d\n", ring->space, n);
@@ -410,6 +412,7 @@ static int i810_dma_initialize(drm_device_t *dev,
dev_priv->pitch = init->pitch;
dev_priv->back_offset = init->back_offset;
dev_priv->depth_offset = init->depth_offset;
+ dev_priv->front_offset = init->front_offset;
dev_priv->overlay_offset = init->overlay_offset;
dev_priv->overlay_physical = init->overlay_physical;
@@ -589,6 +592,8 @@ static void i810EmitState( drm_device_t *dev )
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
unsigned int dirty = sarea_priv->dirty;
+
+ DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
if (dirty & I810_UPLOAD_BUFFERS) {
i810EmitDestVerified( dev, sarea_priv->BufferState );
@@ -627,6 +632,14 @@ static void i810_dma_dispatch_clear( drm_device_t *dev, int flags,
int cpp = 2;
int i;
RING_LOCALS;
+
+ if ( dev_priv->current_page == 1 ) {
+ unsigned int tmp = flags;
+
+ flags &= ~(I810_FRONT | I810_BACK);
+ if (tmp & I810_FRONT) flags |= I810_BACK;
+ if (tmp & I810_BACK) flags |= I810_FRONT;
+ }
i810_kernel_lost_context(dev);
@@ -692,10 +705,11 @@ static void i810_dma_dispatch_swap( drm_device_t *dev )
drm_clip_rect_t *pbox = sarea_priv->boxes;
int pitch = dev_priv->pitch;
int cpp = 2;
- int ofs = dev_priv->back_offset;
int i;
RING_LOCALS;
+ DRM_DEBUG("swapbuffers\n");
+
i810_kernel_lost_context(dev);
if (nbox > I810_NR_SAREA_CLIPRECTS)
@@ -706,7 +720,7 @@ static void i810_dma_dispatch_swap( drm_device_t *dev )
unsigned int w = pbox->x2 - pbox->x1;
unsigned int h = pbox->y2 - pbox->y1;
unsigned int dst = pbox->x1*cpp + pbox->y1*pitch;
- unsigned int start = ofs + dst;
+ unsigned int start = dst;
if (pbox->x1 > pbox->x2 ||
pbox->y1 > pbox->y2 ||
@@ -718,9 +732,15 @@ static void i810_dma_dispatch_swap( drm_device_t *dev )
OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4 );
OUT_RING( pitch | (0xCC << 16));
OUT_RING( (h << 16) | (w * cpp));
- OUT_RING( dst );
+ if (dev_priv->current_page == 0)
+ OUT_RING(dev_priv->front_offset + start);
+ else
+ OUT_RING(dev_priv->back_offset + start);
OUT_RING( pitch );
- OUT_RING( start );
+ if (dev_priv->current_page == 0)
+ OUT_RING(dev_priv->back_offset + start);
+ else
+ OUT_RING(dev_priv->front_offset + start);
ADVANCE_LP_RING();
}
}
@@ -807,6 +827,52 @@ static void i810_dma_dispatch_vertex(drm_device_t *dev,
}
}
+static void i810_dma_dispatch_flip( drm_device_t *dev )
+{
+ drm_i810_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+ int pitch = dev_priv->pitch;
+
+ DRM_DEBUG( "%s: page=%d pfCurrentPage=%d\n",
+ __FUNCTION__,
+ dev_priv->current_page,
+ dev_priv->sarea_priv->pf_current_page);
+
+ i810_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();
+
+ BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
+ /* On i815 at least ASYNC is buggy */
+ /* pitch<<5 is from 11.2.8 p158,
+ its the pitch / 8 then left shifted 8,
+ so (pitch >> 3) << 8 */
+ OUT_RING( CMD_OP_FRONTBUFFER_INFO | (pitch<<5) /*| ASYNC_FLIP */ );
+ if ( dev_priv->current_page == 0 ) {
+ OUT_RING( dev_priv->back_offset );
+ dev_priv->current_page = 1;
+ } else {
+ OUT_RING( dev_priv->front_offset );
+ dev_priv->current_page = 0;
+ }
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+
+ BEGIN_LP_RING(2);
+ OUT_RING( CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP );
+ OUT_RING( 0 );
+ ADVANCE_LP_RING();
+
+ /* Increment the frame counter. The client-side 3D driver must
+ * throttle the framerate by waiting for this value before
+ * performing the swapbuffer ioctl.
+ */
+ dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
+
+}
void i810_dma_quiescent(drm_device_t *dev)
{
@@ -1198,3 +1264,47 @@ int i810_ov0_flip(struct inode *inode, struct file *filp,
}
+/* Not sure why this isn't set all the time:
+ */
+static void i810_do_init_pageflip( drm_device_t *dev )
+{
+ drm_i810_private_t *dev_priv = dev->dev_private;
+
+ DRM_DEBUG("%s\n", __FUNCTION__);
+ dev_priv->page_flipping = 1;
+ dev_priv->current_page = 0;
+ dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
+}
+
+int i810_do_cleanup_pageflip( drm_device_t *dev )
+{
+ drm_i810_private_t *dev_priv = dev->dev_private;
+
+ DRM_DEBUG("%s\n", __FUNCTION__);
+ if (dev_priv->current_page != 0)
+ i810_dma_dispatch_flip( dev );
+
+ dev_priv->page_flipping = 0;
+ return 0;
+}
+
+int i810_flip_bufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ drm_i810_private_t *dev_priv = dev->dev_private;
+
+ DRM_DEBUG("%s\n", __FUNCTION__);
+
+ if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
+ DRM_ERROR("i810_flip_buf called without lock held\n");
+ return -EINVAL;
+ }
+
+ if (!dev_priv->page_flipping)
+ i810_do_init_pageflip( dev );
+
+ i810_dma_dispatch_flip( dev );
+ return 0;
+}
diff --git a/linux/i810_drm.h b/linux/i810_drm.h
index f8c27d83..b35593bd 100644
--- a/linux/i810_drm.h
+++ b/linux/i810_drm.h
@@ -166,6 +166,9 @@ typedef struct _drm_i810_sarea {
int vertex_prim;
+ int pf_enabled; /* is pageflipping allowed? */
+ int pf_active;
+ int pf_current_page; /* which buffer is being displayed? */
} drm_i810_sarea_t;
/* WARNING: If you change any of these defines, make sure to change the
@@ -189,6 +192,7 @@ typedef struct _drm_i810_sarea {
#define DRM_IOCTL_I810_OV0FLIP DRM_IO ( 0x4b)
#define DRM_IOCTL_I810_MC DRM_IOW( 0x4c, drm_i810_mc_t)
#define DRM_IOCTL_I810_RSTATUS DRM_IO ( 0x4d )
+#define DRM_IOCTL_I810_FLIP DRM_IO ( 0x4e )
typedef struct _drm_i810_clear {
int clear_color;
diff --git a/linux/i810_drv.h b/linux/i810_drv.h
index aa82c647..736c20d7 100644
--- a/linux/i810_drv.h
+++ b/linux/i810_drv.h
@@ -75,7 +75,20 @@ typedef struct drm_i810_private {
int overlay_physical;
int w, h;
int pitch;
+ int back_pitch;
+ int depth_pitch;
+ int do_boxes;
+ int dma_used;
+
+ int current_page;
+ int page_flipping;
+
+ wait_queue_head_t irq_queue;
+ atomic_t irq_received;
+ atomic_t irq_emitted;
+
+ int front_offset;
} drm_i810_private_t;
/* i810_dma.c */
@@ -124,6 +137,8 @@ int i810_swap_bufs(struct inode *inode, struct file *filp,
int i810_clear_bufs(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
+int i810_flip_bufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
#define I810_BASE(reg) ((unsigned long) \
dev_priv->mmio_map->handle)
@@ -225,12 +240,15 @@ int i810_clear_bufs(struct inode *inode, struct file *filp,
#define CMD_OP_Z_BUFFER_INFO ((0x0<<29)|(0x16<<23))
#define CMD_OP_DESTBUFFER_INFO ((0x0<<29)|(0x15<<23))
#define CMD_OP_FRONTBUFFER_INFO ((0x0<<29)|(0x14<<23))
+#define CMD_OP_WAIT_FOR_EVENT ((0x0<<29)|(0x03<<23))
#define BR00_BITBLT_CLIENT 0x40000000
#define BR00_OP_COLOR_BLT 0x10000000
#define BR00_OP_SRC_COPY_BLT 0x10C00000
#define BR13_SOLID_PATTERN 0x80000000
-
+#define WAIT_FOR_PLANE_A_SCANLINES (1<<1)
+#define WAIT_FOR_PLANE_A_FLIP (1<<2)
+#define WAIT_FOR_VBLANK (1<<3)
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 17:50:01 +0000