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Diffstat (limited to 'shared')
-rw-r--r--shared/via_dma.c76
-rw-r--r--shared/via_drm.h23
-rw-r--r--shared/via_drv.c6
-rw-r--r--shared/via_map.c2
-rw-r--r--shared/via_mm.c4
5 files changed, 79 insertions, 32 deletions
diff --git a/shared/via_dma.c b/shared/via_dma.c
index 4afc5215..d9a1fb1a 100644
--- a/shared/via_dma.c
+++ b/shared/via_dma.c
@@ -24,6 +24,57 @@ static void via_cmdbuf_reset(drm_via_private_t * dev_priv);
static void via_cmdbuf_rewind(drm_via_private_t * dev_priv);
static int via_wait_idle(drm_via_private_t * dev_priv);
+
+/*
+ * This function needs to be extended whenever a new command set
+ * is implemented. Currently it works only for the 2D engine
+ * command, which on the Unichrome allows writing to
+ * at least the 2D engine and the mpeg engine, but not the
+ * video engine.
+ *
+ * If you update this function with new commands, please also
+ * consider implementing these commands in
+ * via_parse_pci_cmdbuffer below.
+ *
+ * Carefully review this function for security holes
+ * after an update!!!!!!!!!
+ */
+
+static int via_check_command_stream(const uint32_t *buf,
+ unsigned int size)
+{
+
+ uint32_t offset;
+ unsigned int i;
+
+ if (size & 7) {
+ DRM_ERROR("Illegal command buffer size.\n");
+ return DRM_ERR( EINVAL );
+ }
+ size >>=3;
+ for (i=0; i<size; ++i) {
+ offset = *buf;
+ buf += 2;
+ if ((offset > ((0x3FF >> 2) | VIA_2D_CMD)) &&
+ (offset < ((0xC00 >> 2) | VIA_2D_CMD)) ) {
+ DRM_ERROR("Attempt to access Burst Command / 3D Area.\n");
+ return DRM_ERR( EINVAL );
+ } else if (offset > ((0xDFF >> 2) | VIA_2D_CMD)) {
+ DRM_ERROR("Attempt to access DMA or VGA registers.\n");
+ return DRM_ERR( EINVAL );
+ }
+
+ /*
+ * ...
+ * A volunteer should complete this to allow non-root
+ * usage of accelerated 3D OpenGL.
+ */
+
+ }
+ return 0;
+}
+
+
static inline int
via_cmdbuf_wait(drm_via_private_t * dev_priv, unsigned int size)
{
@@ -163,6 +214,8 @@ static int via_dispatch_cmdbuffer(drm_device_t *dev,
{
drm_via_private_t *dev_priv = dev->dev_private;
uint32_t * vb;
+ int ret;
+
vb = via_check_dma(dev_priv, cmd->size);
if (vb == NULL) {
return DRM_ERR(EAGAIN);
@@ -170,6 +223,10 @@ static int via_dispatch_cmdbuffer(drm_device_t *dev,
if (DRM_COPY_FROM_USER(vb, cmd->buf, cmd->size)) {
return DRM_ERR(EFAULT);
}
+
+ if ((ret = via_check_command_stream( vb, cmd->size)))
+ return ret;
+
dev_priv->dma_low += cmd->size;
via_cmdbuf_pause(dev_priv);
@@ -225,6 +282,7 @@ int via_cmdbuffer( DRM_IOCTL_ARGS )
return 0;
}
+
static int via_parse_pci_cmdbuffer( drm_device_t *dev, const char *buf,
unsigned int size )
{
@@ -232,22 +290,12 @@ static int via_parse_pci_cmdbuffer( drm_device_t *dev, const char *buf,
uint32_t offset, value;
const uint32_t *regbuf = (uint32_t *)buf;
unsigned int i;
+ int ret;
+ if ((ret = via_check_command_stream( regbuf, size)))
+ return ret;
+
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++;
diff --git a/shared/via_drm.h b/shared/via_drm.h
index ddc89f83..52adade2 100644
--- a/shared/via_drm.h
+++ b/shared/via_drm.h
@@ -90,19 +90,19 @@
#define VIDEO 0
#define AGP 1
typedef struct {
- unsigned int offset;
- unsigned int size;
+ unsigned long offset;
+ unsigned long size;
} drm_via_agp_t;
typedef struct {
- unsigned int offset;
- unsigned int size;
+ unsigned long offset;
+ unsigned long size;
} drm_via_fb_t;
typedef struct {
- unsigned int context;
- unsigned int type;
- unsigned int size;
+ uint32_t context;
+ uint32_t type;
+ unsigned long size;
unsigned long index;
unsigned long offset;
} drm_via_mem_t;
@@ -123,11 +123,10 @@ typedef struct _drm_via_futex {
enum {
VIA_FUTEX_WAIT = 0x00,
VIA_FUTEX_WAKE = 0X01
- }fut;
- unsigned int op;
- unsigned int ms;
- unsigned int lock;
- unsigned int val;
+ } func;
+ uint32_t ms;
+ uint32_t lock;
+ uint32_t val;
} drm_via_futex_t;
typedef struct _drm_via_dma_init {
diff --git a/shared/via_drv.c b/shared/via_drv.c
index 7b6e1b96..ebff3007 100644
--- a/shared/via_drv.c
+++ b/shared/via_drv.c
@@ -32,10 +32,10 @@
#define DRIVER_NAME "via"
#define DRIVER_DESC "VIA Unichrome"
-#define DRIVER_DATE "20040907"
+#define DRIVER_DATE "20041010"
-#define DRIVER_MAJOR 1
-#define DRIVER_MINOR 5
+#define DRIVER_MAJOR 2
+#define DRIVER_MINOR 0
#define DRIVER_PATCHLEVEL 0
diff --git a/shared/via_map.c b/shared/via_map.c
index f08503d4..7d3ebf26 100644
--- a/shared/via_map.c
+++ b/shared/via_map.c
@@ -127,7 +127,7 @@ int via_decoder_futex( DRM_IOCTL_ARGS )
lock = XVMCLOCKPTR(sAPriv,fx.lock);
- switch(fx.op) {
+ switch(fx.func) {
case VIA_FUTEX_WAIT:
DRM_WAIT_ON(ret, dev_priv->decoder_queue[fx.lock],
(fx.ms / 10)*(DRM_HZ/100),
diff --git a/shared/via_mm.c b/shared/via_mm.c
index 2a9be681..5a30e30d 100644
--- a/shared/via_mm.c
+++ b/shared/via_mm.c
@@ -80,7 +80,7 @@ int via_agp_init( DRM_IOCTL_ARGS )
AgpHeap = via_mmInit(agp.offset, agp.size);
- DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
+ DRM_DEBUG("offset = %lu, size = %lu", agp.offset, agp.size);
return 0;
}
@@ -97,7 +97,7 @@ int via_fb_init( DRM_IOCTL_ARGS )
FBHeap = via_mmInit(fb.offset, fb.size);
- DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
+ DRM_DEBUG("offset = %lu, size = %lu", fb.offset, fb.size);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 16:54:46 +0000