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-rw-r--r--shared-core/via_dma.c88
-rw-r--r--shared-core/via_drm.h7
-rw-r--r--shared-core/via_drv.c8
-rw-r--r--shared-core/via_drv.h1
4 files changed, 100 insertions, 4 deletions
diff --git a/shared-core/via_dma.c b/shared-core/via_dma.c
index 83c14cf0..c11652c0 100644
--- a/shared-core/via_dma.c
+++ b/shared-core/via_dma.c
@@ -16,6 +16,8 @@
#include "via_drm.h"
#include "via_drv.h"
+#define VIA_2D_CMD 0xF0000000
+
static void via_cmdbuf_start(drm_via_private_t * dev_priv);
static void via_cmdbuf_pause(drm_via_private_t * dev_priv);
static void via_cmdbuf_reset(drm_via_private_t * dev_priv);
@@ -223,6 +225,92 @@ int via_cmdbuffer( DRM_IOCTL_ARGS )
return 0;
}
+static int via_parse_pci_cmdbuffer( drm_device_t *dev, const char *buf,
+ unsigned int size )
+{
+ drm_via_private_t *dev_priv = dev->dev_private;
+ uint32_t offset, value;
+ const uint32_t *regbuf = (uint32_t *)buf;
+ unsigned int i;
+
+ size >>=3 ;
+ for (i=0; i<size; ++i) {
+ offset = *regbuf;
+ regbuf += 2;
+ if ((offset > ((0x7FF >> 2) | VIA_2D_CMD)) &&
+ (offset < ((0xC00 >> 2) | VIA_2D_CMD)) ) {
+ DRM_DEBUG("Attempt to access Burst Command Area.\n");
+ return DRM_ERR( EINVAL );
+ } else if (offset > ((0xDFF >> 2) | VIA_2D_CMD)) {
+ DRM_DEBUG("Attempt to access DMA or VGA registers.\n");
+ return DRM_ERR( EINVAL );
+ }
+ }
+
+ regbuf = (uint32_t *)buf;
+ for ( i=0; i<size; ++i ) {
+ offset = (*regbuf++ & ~VIA_2D_CMD) << 2;
+ value = *regbuf++;
+ VIA_WRITE( offset, value );
+ }
+ return 0;
+}
+
+static int via_dispatch_pci_cmdbuffer(drm_device_t *dev,
+ drm_via_cmdbuffer_t *cmd )
+{
+ drm_via_private_t *dev_priv = dev->dev_private;
+ char *hugebuf;
+ int ret;
+
+ /*
+ * We must be able to parse the buffer all at a time, so as
+ * to return an error on an invalid operation without doing
+ * anything.
+ * Small buffers must, on the other hand be handled fast.
+ */
+
+ if ( cmd->size > VIA_MAX_PCI_SIZE ) {
+ return DRM_ERR( ENOMEM );
+ } else if ( cmd->size > VIA_PREALLOCATED_PCI_SIZE ) {
+ if (NULL == (hugebuf = (char *) kmalloc( cmd-> size, GFP_KERNEL )))
+ return DRM_ERR( ENOMEM );
+ DRM_COPY_FROM_USER( hugebuf, cmd->buf, cmd->size );
+ ret = via_parse_pci_cmdbuffer( dev, hugebuf, cmd->size );
+ kfree( hugebuf );
+ } else {
+ DRM_COPY_FROM_USER( dev_priv->pci_buf, cmd->buf, cmd->size );
+ ret = via_parse_pci_cmdbuffer( dev, dev_priv->pci_buf, cmd->size );
+ }
+ return ret;
+}
+
+
+
+int via_pci_cmdbuffer( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_via_cmdbuffer_t cmdbuf;
+ int ret;
+
+ DRM_COPY_FROM_USER_IOCTL( cmdbuf, (drm_via_cmdbuffer_t *)data,
+ sizeof(cmdbuf) );
+
+ DRM_DEBUG("via_pci_cmdbuffer, buf %p size %lu\n", cmdbuf.buf, cmdbuf.size);
+
+ if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
+ DRM_ERROR("via_pci_cmdbuffer called without lock held\n");
+ return DRM_ERR(EINVAL);
+ }
+
+ ret = via_dispatch_pci_cmdbuffer( dev, &cmdbuf );
+ if (ret) {
+ return ret;
+ }
+
+ return 0;
+}
+
diff --git a/shared-core/via_drm.h b/shared-core/via_drm.h
index 5325f62f..ddc89f83 100644
--- a/shared-core/via_drm.h
+++ b/shared-core/via_drm.h
@@ -38,6 +38,8 @@
#define VIA_NR_XVMC_PORTS 10
#define VIA_NR_XVMC_LOCKS 5
#define VIA_MAX_CACHELINE_SIZE 64
+#define VIA_PREALLOCATED_PCI_SIZE 16384
+#define VIA_MAX_PCI_SIZE 65536
#define XVMCLOCKPTR(saPriv,lockNo) \
((volatile int *)(((((unsigned long) (saPriv)->XvMCLockArea) + \
(VIA_MAX_CACHELINE_SIZE - 1)) & \
@@ -67,8 +69,10 @@
#define DRM_IOCTL_VIA_MAP_INIT DRM_IOWR(0x44, drm_via_init_t)
#define DRM_IOCTL_VIA_DEC_FUTEX DRM_IOW(0x45, drm_via_futex_t)
#define DRM_IOCTL_VIA_DMA_INIT DRM_IOWR(0x47, drm_via_dma_init_t)
-#define DRM_IOCTL_VIA_CMDBUFFER DRM_IOWR(0x48, drm_via_dma_init_t)
+#define DRM_IOCTL_VIA_CMDBUFFER DRM_IOW(0x48, drm_via_cmdbuffer_t)
#define DRM_IOCTL_VIA_FLUSH DRM_IO(0x49)
+#define DRM_IOCTL_VIA_PCICMD DRM_IOW(0x4A, drm_via_cmdbuffer_t)
+
/* Indices into buf.Setup where various bits of state are mirrored per
* context and per buffer. These can be fired at the card as a unit,
@@ -200,6 +204,7 @@ int via_decoder_futex( DRM_IOCTL_ARGS );
int via_dma_init( DRM_IOCTL_ARGS );
int via_cmdbuffer( DRM_IOCTL_ARGS );
int via_flush_ioctl( DRM_IOCTL_ARGS );
+int via_pci_cmdbuffer( DRM_IOCTL_ARGS );
#endif
#endif /* _VIA_DRM_H_ */
diff --git a/shared-core/via_drv.c b/shared-core/via_drv.c
index b3119f66..8c4e7480 100644
--- a/shared-core/via_drv.c
+++ b/shared-core/via_drv.c
@@ -21,6 +21,7 @@
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
+
#include <linux/config.h>
#include "via.h"
#include "drmP.h"
@@ -31,10 +32,10 @@
#define DRIVER_NAME "via"
#define DRIVER_DESC "VIA Unichrome"
-#define DRIVER_DATE "20040819"
+#define DRIVER_DATE "20040907"
#define DRIVER_MAJOR 1
-#define DRIVER_MINOR 4
+#define DRIVER_MINOR 5
#define DRIVER_PATCHLEVEL 0
@@ -47,7 +48,8 @@
[DRM_IOCTL_NR(DRM_IOCTL_VIA_DEC_FUTEX)] = { via_decoder_futex, 1, 0}, \
[DRM_IOCTL_NR(DRM_IOCTL_VIA_DMA_INIT)] = { via_dma_init, 1, 0}, \
[DRM_IOCTL_NR(DRM_IOCTL_VIA_CMDBUFFER)] = { via_cmdbuffer, 1, 0}, \
- [DRM_IOCTL_NR(DRM_IOCTL_VIA_FLUSH)] = { via_flush_ioctl, 1, 0}
+ [DRM_IOCTL_NR(DRM_IOCTL_VIA_FLUSH)] = { via_flush_ioctl, 1, 0}, \
+ [DRM_IOCTL_NR(DRM_IOCTL_VIA_PCICMD)] = { via_pci_cmdbuffer, 1, 0}
#define __HAVE_COUNTERS 0
diff --git a/shared-core/via_drv.h b/shared-core/via_drv.h
index dd4a370f..39ccf0bd 100644
--- a/shared-core/via_drv.h
+++ b/shared-core/via_drv.h
@@ -46,6 +46,7 @@ typedef struct drm_via_private {
uint32_t * last_pause_ptr;
volatile uint32_t * hw_addr_ptr;
drm_via_ring_buffer_t ring;
+ char pci_buf[VIA_PREALLOCATED_PCI_SIZE];
} drm_via_private_t;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 09:10:35 +0000