From e34b5601912ce4b611d429304d5271fcf6f9f457 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <unichrome@shipmail.org>
Date: Wed, 5 Jan 2005 17:44:43 +0000
Subject: VIA update: Release video futexes when context is destroyed (This was
previously done by the X server). Added New Unichrome Pro VIDEO DMA
commands to the verifier. Added Quiescent heavyweight lock mode.
---
shared-core/via_3d_reg.h | 5 ++
shared-core/via_dma.c | 6 +--
shared-core/via_drv.c | 1 +
shared-core/via_drv.h | 1 +
shared-core/via_mm.c | 24 +++++++++-
shared-core/via_verifier.c | 114 +++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 146 insertions(+), 5 deletions(-)
(limited to 'shared-core')
diff --git a/shared-core/via_3d_reg.h b/shared-core/via_3d_reg.h
index 43c01836..cf61bb51 100644
--- a/shared-core/via_3d_reg.h
+++ b/shared-core/via_3d_reg.h
@@ -1643,4 +1643,9 @@
#define HC_HAGPBpID_STOP 0x00000002
#define HC_HAGPBpH_MASK 0x00ffffff
+
+#define VIA_VIDEO_HEADER5 0xFE040000
+#define VIA_VIDEO_HEADER6 0xFE050000
+#define VIA_VIDEO_HEADER7 0xFE060000
+#define VIA_VIDEOMASK 0xFFFF0000
#endif
diff --git a/shared-core/via_dma.c b/shared-core/via_dma.c
index b8c916d9..d514e4d7 100644
--- a/shared-core/via_dma.c
+++ b/shared-core/via_dma.c
@@ -298,12 +298,12 @@ static int via_dispatch_cmdbuffer(drm_device_t * dev, drm_via_cmdbuffer_t * cmd)
return 0;
}
-static int via_quiescent(drm_device_t * dev)
+int via_driver_dma_quiescent(drm_device_t * dev)
{
drm_via_private_t *dev_priv = dev->dev_private;
if (!via_wait_idle(dev_priv)) {
- return DRM_ERR(EAGAIN);
+ return DRM_ERR(EBUSY);
}
return 0;
}
@@ -314,7 +314,7 @@ int via_flush_ioctl(DRM_IOCTL_ARGS)
LOCK_TEST_WITH_RETURN( dev, filp );
- return via_quiescent(dev);
+ return via_driver_dma_quiescent(dev);
}
int via_cmdbuffer(DRM_IOCTL_ARGS)
diff --git a/shared-core/via_drv.c b/shared-core/via_drv.c
index 16233380..d3d843da 100644
--- a/shared-core/via_drv.c
+++ b/shared-core/via_drv.c
@@ -84,6 +84,7 @@ static struct drm_driver driver = {
.irq_postinstall = via_driver_irq_postinstall,
.irq_uninstall = via_driver_irq_uninstall,
.irq_handler = via_driver_irq_handler,
+ .dma_quiescent = via_driver_dma_quiescent,
.reclaim_buffers = drm_core_reclaim_buffers,
.get_map_ofs = drm_core_get_map_ofs,
.get_reg_ofs = drm_core_get_reg_ofs,
diff --git a/shared-core/via_drv.h b/shared-core/via_drv.h
index 48a93f78..c07747b2 100644
--- a/shared-core/via_drv.h
+++ b/shared-core/via_drv.h
@@ -85,6 +85,7 @@ extern int via_dma_cleanup(drm_device_t * dev);
extern void via_init_command_verifier(void);
extern int via_verify_command_stream(const uint32_t * buf, unsigned int size, drm_device_t *dev);
extern int via_wait_idle(drm_via_private_t * dev_priv);
+extern int via_driver_dma_quiescent(drm_device_t * dev);
#endif
diff --git a/shared-core/via_mm.c b/shared-core/via_mm.c
index 5199f6c9..5940de70 100644
--- a/shared-core/via_mm.c
+++ b/shared-core/via_mm.c
@@ -130,8 +130,12 @@ int via_init_context(struct drm_device *dev, int context)
}
int via_final_context(struct drm_device *dev, int context)
-{
- int i;
+{
+ int i;
+ volatile int *lock;
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ drm_via_sarea_t *sAPriv = dev_priv->sarea_priv;
+
for (i = 0; i < MAX_CONTEXT; i++)
if (global_ppriv[i].used &&
(global_ppriv[i].context == context))
@@ -166,6 +170,22 @@ int via_final_context(struct drm_device *dev, int context)
global_ppriv[i].used = 0;
}
+
+ /*
+ * Release futex locks.
+ */
+
+ for (i=0; i < VIA_NR_XVMC_LOCKS; ++i) {
+ lock = XVMCLOCKPTR(sAPriv, i);
+ if ( (_DRM_LOCKING_CONTEXT( *lock ) == i) &&
+ (_DRM_LOCK_IS_HELD( *lock ))) {
+ if ( *lock & _DRM_LOCK_CONT) {
+ DRM_WAKEUP( &(dev_priv->decoder_queue[i]));
+ }
+ *lock &= ~( _DRM_LOCK_HELD | _DRM_LOCK_CONT );
+ }
+ }
+
#if defined(__linux__)
/* Linux specific until context tracking code gets ported to BSD */
/* Last context, perform cleanup */
diff --git a/shared-core/via_verifier.c b/shared-core/via_verifier.c
index c60c911f..7a772588 100644
--- a/shared-core/via_verifier.c
+++ b/shared-core/via_verifier.c
@@ -35,6 +35,8 @@ typedef enum{
state_command,
state_header2,
state_header1,
+ state_vheader5,
+ state_vheader6,
state_error
} verifier_state_t;
@@ -617,6 +619,41 @@ via_check_header2( uint32_t const **buffer, const uint32_t *buf_end )
}
+static __inline__ int
+verify_mmio_address( uint32_t address)
+{
+ if ((address > 0x3FF) && (address < 0xC00 )) {
+ DRM_ERROR("Invalid HALCYON_HEADER1 command. "
+ "Attempt to access 3D- or command burst area.\n");
+ return 1;
+ } else if (address > 0xCFF ) {
+ DRM_ERROR("Invalid HALCYON_HEADER1 command. "
+ "Attempt to access VGA registers.\n");
+ return 1;
+ }
+ return 0;
+}
+
+static __inline__ int
+verify_video_tail( uint32_t const **buffer, const uint32_t *buf_end, uint32_t dwords)
+{
+ const uint32_t *buf = *buffer;
+
+ if (buf_end - buf < dwords) {
+ DRM_ERROR("Illegal termination of video command.\n");
+ return 1;
+ }
+ while (dwords--) {
+ if (*buf++) {
+ DRM_ERROR("Illegal video command tail.\n");
+ return 1;
+ }
+ }
+ *buffer = buf;
+ return 0;
+}
+
+
static __inline__ verifier_state_t
via_check_header1( uint32_t const **buffer, const uint32_t *buf_end )
{
@@ -649,6 +686,73 @@ via_check_header1( uint32_t const **buffer, const uint32_t *buf_end )
return ret;
}
+static __inline__ verifier_state_t
+via_check_vheader5( uint32_t const **buffer, const uint32_t *buf_end )
+{
+ uint32_t data;
+ const uint32_t *buf = *buffer;
+
+ if (buf_end - buf < 4) {
+ DRM_ERROR("Illegal termination of video header5 command\n");
+ return state_error;
+ }
+
+ data = *buf++ & ~VIA_VIDEOMASK;
+ if (verify_mmio_address(data))
+ return state_error;
+
+ data = *buf++;
+ if (*buf++ != 0x00F50000) {
+ DRM_ERROR("Illegal header5 header data\n");
+ return state_error;
+ }
+ if (*buf++ != 0x00000000) {
+ DRM_ERROR("Illegal header5 header data\n");
+ return state_error;
+ }
+ if (eat_words(&buf, buf_end, data))
+ return state_error;
+ if (verify_video_tail(&buf, buf_end, 4 - (data & 3)))
+ return state_error;
+ *buffer = buf;
+ return state_command;
+
+}
+
+static __inline__ verifier_state_t
+via_check_vheader6( uint32_t const **buffer, const uint32_t *buf_end )
+{
+ uint32_t data;
+ const uint32_t *buf = *buffer;
+ uint32_t i;
+
+ if (buf_end - buf < 4) {
+ DRM_ERROR("Illegal termination of video header6 command\n");
+ return state_error;
+ }
+
+ data = *buf++;
+ if (*buf++ != 0x00F60000) {
+ DRM_ERROR("Illegal header6 header data\n");
+ return state_error;
+ }
+ if (*buf++ != 0x00000000) {
+ DRM_ERROR("Illegal header6 header data\n");
+ return state_error;
+ }
+ if ((buf_end - buf) < (data << 1)) {
+ DRM_ERROR("Illegal termination of video header6 command\n");
+ }
+ for (i=0; i<data; ++i) {
+ if (verify_mmio_address(*buf++))
+ return state_error;
+ buf++;
+ }
+ if (verify_video_tail(&buf, buf_end, 4 - ((data << 1) & 3)))
+ return state_error;
+ *buffer = buf;
+ return state_command;
+}
int
@@ -671,11 +775,21 @@ via_verify_command_stream(const uint32_t * buf, unsigned int size, drm_device_t
case state_header1:
state = via_check_header1( &buf, buf_end );
break;
+ case state_vheader5:
+ state = via_check_vheader5( &buf, buf_end );
+ break;
+ case state_vheader6:
+ state = via_check_vheader6( &buf, buf_end );
+ break;
case state_command:
if (HALCYON_HEADER2 == (cmd = *buf))
state = state_header2;
else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1)
state = state_header1;
+ else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5)
+ state = state_vheader5;
+ else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6)
+ state = state_vheader6;
else {
DRM_ERROR("Invalid / Unimplemented DMA HEADER command. 0x%x\n",
cmd);
--
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