/* via_dma.c -- DMA support for the VIA Unichrome/Pro
- *
+ *
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Copyright 2004 Digeo, Inc., Palo Alto, CA, U.S.A.
* All Rights Reserved.
- *
+ *
* Copyright 2004 The Unichrome project.
* All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
- * Authors:
- * Tungsten Graphics,
- * Erdi Chen,
+ * Authors:
+ * Tungsten Graphics,
+ * Erdi Chen,
* Thomas Hellstrom.
*/
dev_priv->dma_low +=8; \
}
-#define via_flush_write_combine() DRM_MEMORYBARRIER()
+#define via_flush_write_combine() DRM_MEMORYBARRIER()
#define VIA_OUT_RING_QW(w1,w2) \
*vb++ = (w1); \
*vb++ = (w2); \
- dev_priv->dma_low += 8;
+ dev_priv->dma_low += 8;
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);
static void via_cmdbuf_rewind(drm_via_private_t * dev_priv);
static int via_wait_idle(drm_via_private_t * dev_priv);
-static void via_pad_cache(drm_via_private_t *dev_priv, int qwords);
-
+static void via_pad_cache(drm_via_private_t * dev_priv, int qwords);
/*
* Free space in command buffer.
*/
-static uint32_t
-via_cmdbuf_space(drm_via_private_t *dev_priv)
+static uint32_t via_cmdbuf_space(drm_via_private_t * dev_priv)
{
- uint32_t agp_base = dev_priv->dma_offset +
- (uint32_t) dev_priv->agpAddr;
+ uint32_t agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
uint32_t hw_addr = *(dev_priv->hw_addr_ptr) - agp_base;
-
- return ((hw_addr <= dev_priv->dma_low) ?
- (dev_priv->dma_high + hw_addr - dev_priv->dma_low) :
+
+ return ((hw_addr <= dev_priv->dma_low) ?
+ (dev_priv->dma_high + hw_addr - dev_priv->dma_low) :
(hw_addr - dev_priv->dma_low));
}
* How much does the command regulator lag behind?
*/
-static uint32_t
-via_cmdbuf_lag(drm_via_private_t *dev_priv)
+static uint32_t via_cmdbuf_lag(drm_via_private_t * dev_priv)
{
- uint32_t agp_base = dev_priv->dma_offset +
- (uint32_t) dev_priv->agpAddr;
+ uint32_t agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
uint32_t hw_addr = *(dev_priv->hw_addr_ptr) - agp_base;
-
- return ((hw_addr <= dev_priv->dma_low) ?
- (dev_priv->dma_low - hw_addr) :
+
+ return ((hw_addr <= dev_priv->dma_low) ?
+ (dev_priv->dma_low - hw_addr) :
(dev_priv->dma_wrap + dev_priv->dma_low - hw_addr));
}
uint32_t count;
hw_addr_ptr = dev_priv->hw_addr_ptr;
cur_addr = dev_priv->dma_low;
- next_addr = cur_addr + size + 512*1024;
+ next_addr = cur_addr + size + 512 * 1024;
count = 1000000;
do {
- hw_addr = *hw_addr_ptr - agp_base;
+ hw_addr = *hw_addr_ptr - agp_base;
if (count-- == 0) {
- DRM_ERROR("via_cmdbuf_wait timed out hw %x cur_addr %x next_addr %x\n",
- hw_addr, cur_addr, next_addr);
+ DRM_ERROR
+ ("via_cmdbuf_wait timed out hw %x cur_addr %x next_addr %x\n",
+ hw_addr, cur_addr, next_addr);
return -1;
}
} while ((cur_addr < hw_addr) && (next_addr >= hw_addr));
return 0;
}
-
/*
* Checks whether buffer head has reach the end. Rewind the ring buffer
* when necessary.
static inline uint32_t *via_check_dma(drm_via_private_t * dev_priv,
unsigned int size)
{
- if ((dev_priv->dma_low + size + 4*CMDBUF_ALIGNMENT_SIZE) > dev_priv->dma_high) {
+ if ((dev_priv->dma_low + size + 4 * CMDBUF_ALIGNMENT_SIZE) >
+ dev_priv->dma_high) {
via_cmdbuf_rewind(dev_priv);
}
if (via_cmdbuf_wait(dev_priv, size) != 0) {
return (uint32_t *) (dev_priv->dma_ptr + dev_priv->dma_low);
}
-int via_dma_cleanup(drm_device_t * dev)
+int via_dma_cleanup(struct drm_device * dev)
{
if (dev->dev_private) {
drm_via_private_t *dev_priv =
- (drm_via_private_t *) dev->dev_private;
+ (drm_via_private_t *) dev->dev_private;
if (dev_priv->ring.virtual_start) {
via_cmdbuf_reset(dev_priv);
return 0;
}
-static int via_initialize(drm_device_t * dev,
+static int via_initialize(struct drm_device * dev,
drm_via_private_t * dev_priv,
drm_via_dma_init_t * init)
{
if (!dev_priv || !dev_priv->mmio) {
DRM_ERROR("via_dma_init called before via_map_init\n");
- return DRM_ERR(EFAULT);
+ return -EFAULT;
}
if (dev_priv->ring.virtual_start != NULL) {
DRM_ERROR("%s called again without calling cleanup\n",
__FUNCTION__);
- return DRM_ERR(EFAULT);
+ return -EFAULT;
}
if (!dev->agp || !dev->agp->base) {
- DRM_ERROR("%s called with no agp memory available\n",
+ DRM_ERROR("%s called with no agp memory available\n",
__FUNCTION__);
- return DRM_ERR(EFAULT);
+ return -EFAULT;
+ }
+
+ if (dev_priv->chipset == VIA_DX9_0) {
+ DRM_ERROR("AGP DMA is not supported on this chip\n");
+ return -EINVAL;
}
dev_priv->ring.map.offset = dev->agp->base + init->offset;
via_dma_cleanup(dev);
DRM_ERROR("can not ioremap virtual address for"
" ring buffer\n");
- return DRM_ERR(ENOMEM);
+ return -ENOMEM;
}
dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
dev_priv->dma_wrap = init->size;
dev_priv->dma_offset = init->offset;
dev_priv->last_pause_ptr = NULL;
- dev_priv->hw_addr_ptr = dev_priv->mmio->handle + init->reg_pause_addr;
+ dev_priv->hw_addr_ptr =
+ (volatile uint32_t *)((char *)dev_priv->mmio->handle +
+ init->reg_pause_addr);
via_cmdbuf_start(dev_priv);
return 0;
}
-int via_dma_init(DRM_IOCTL_ARGS)
+static int via_dma_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- drm_via_dma_init_t init;
+ drm_via_dma_init_t *init = data;
int retcode = 0;
- DRM_COPY_FROM_USER_IOCTL(init, (drm_via_dma_init_t *) data,
- sizeof(init));
-
- switch (init.func) {
+ switch (init->func) {
case VIA_INIT_DMA:
- if (!capable(CAP_SYS_ADMIN))
- retcode = DRM_ERR(EPERM);
+ if (!DRM_SUSER(DRM_CURPROC))
+ retcode = -EPERM;
else
- retcode = via_initialize(dev, dev_priv, &init);
+ retcode = via_initialize(dev, dev_priv, init);
break;
case VIA_CLEANUP_DMA:
- if (!capable(CAP_SYS_ADMIN))
- retcode = DRM_ERR(EPERM);
+ if (!DRM_SUSER(DRM_CURPROC))
+ retcode = -EPERM;
else
retcode = via_dma_cleanup(dev);
break;
- case VIA_DMA_INITIALIZED:
- retcode = (dev_priv->ring.virtual_start != NULL) ?
- 0: DRM_ERR( EFAULT );
- break;
+ case VIA_DMA_INITIALIZED:
+ retcode = (dev_priv->ring.virtual_start != NULL) ?
+ 0 : -EFAULT;
+ break;
default:
- retcode = DRM_ERR(EINVAL);
+ retcode = -EINVAL;
break;
}
return retcode;
}
-
-
-static int via_dispatch_cmdbuffer(drm_device_t * dev, drm_via_cmdbuffer_t * cmd)
+static int via_dispatch_cmdbuffer(struct drm_device * dev, drm_via_cmdbuffer_t * cmd)
{
drm_via_private_t *dev_priv;
uint32_t *vb;
if (dev_priv->ring.virtual_start == NULL) {
DRM_ERROR("%s called without initializing AGP ring buffer.\n",
__FUNCTION__);
- return DRM_ERR(EFAULT);
+ return -EFAULT;
}
if (cmd->size > VIA_PCI_BUF_SIZE) {
- return DRM_ERR(ENOMEM);
- }
-
+ return -ENOMEM;
+ }
if (DRM_COPY_FROM_USER(dev_priv->pci_buf, cmd->buf, cmd->size))
- return DRM_ERR(EFAULT);
+ return -EFAULT;
/*
* Running this function on AGP memory is dead slow. Therefore
* copy it to AGP memory when ready.
*/
-
- if ((ret = via_verify_command_stream((uint32_t *)dev_priv->pci_buf, cmd->size, dev, 1))) {
+ if ((ret =
+ via_verify_command_stream((uint32_t *) dev_priv->pci_buf,
+ cmd->size, dev, 1))) {
return ret;
}
-
-
+
vb = via_check_dma(dev_priv, (cmd->size < 0x100) ? 0x102 : cmd->size);
if (vb == NULL) {
- return DRM_ERR(EAGAIN);
+ return -EAGAIN;
}
memcpy(vb, dev_priv->pci_buf, cmd->size);
-
+
dev_priv->dma_low += cmd->size;
/*
*/
if (cmd->size < 0x100)
- via_pad_cache(dev_priv,(0x100 - cmd->size) >> 3);
+ via_pad_cache(dev_priv, (0x100 - cmd->size) >> 3);
via_cmdbuf_pause(dev_priv);
return 0;
}
-int via_driver_dma_quiescent(drm_device_t * dev)
+int via_driver_dma_quiescent(struct drm_device * dev)
{
drm_via_private_t *dev_priv = dev->dev_private;
if (!via_wait_idle(dev_priv)) {
- return DRM_ERR(EBUSY);
+ return -EBUSY;
}
return 0;
}
-int via_flush_ioctl(DRM_IOCTL_ARGS)
+static int via_flush_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
- LOCK_TEST_WITH_RETURN( dev, filp );
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
return via_driver_dma_quiescent(dev);
}
-int via_cmdbuffer(DRM_IOCTL_ARGS)
+static int via_cmdbuffer(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
- drm_via_cmdbuffer_t cmdbuf;
+ drm_via_cmdbuffer_t *cmdbuf = data;
int ret;
- LOCK_TEST_WITH_RETURN( dev, filp );
-
- DRM_COPY_FROM_USER_IOCTL(cmdbuf, (drm_via_cmdbuffer_t *) data,
- sizeof(cmdbuf));
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
- DRM_DEBUG("via cmdbuffer, buf %p size %lu\n", cmdbuf.buf, cmdbuf.size);
+ DRM_DEBUG("via cmdbuffer, buf %p size %lu\n", cmdbuf->buf,
+ cmdbuf->size);
- ret = via_dispatch_cmdbuffer(dev, &cmdbuf);
+ ret = via_dispatch_cmdbuffer(dev, cmdbuf);
if (ret) {
return ret;
}
return 0;
}
-extern int
-via_parse_command_stream(drm_device_t *dev, const uint32_t * buf, unsigned int size);
-static int via_dispatch_pci_cmdbuffer(drm_device_t * dev,
+static int via_dispatch_pci_cmdbuffer(struct drm_device * dev,
drm_via_cmdbuffer_t * cmd)
{
drm_via_private_t *dev_priv = dev->dev_private;
int ret;
if (cmd->size > VIA_PCI_BUF_SIZE) {
- return DRM_ERR(ENOMEM);
- }
+ return -ENOMEM;
+ }
if (DRM_COPY_FROM_USER(dev_priv->pci_buf, cmd->buf, cmd->size))
- return DRM_ERR(EFAULT);
-
- if ((ret = via_verify_command_stream((uint32_t *)dev_priv->pci_buf, cmd->size, dev, 0))) {
+ return -EFAULT;
+
+ if ((ret =
+ via_verify_command_stream((uint32_t *) dev_priv->pci_buf,
+ cmd->size, dev, 0))) {
return ret;
}
-
- ret = via_parse_command_stream(dev, (const uint32_t *)dev_priv->pci_buf, cmd->size);
+
+ ret =
+ via_parse_command_stream(dev, (const uint32_t *)dev_priv->pci_buf,
+ cmd->size);
return ret;
}
-int via_pci_cmdbuffer(DRM_IOCTL_ARGS)
+static int via_pci_cmdbuffer(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
- drm_via_cmdbuffer_t cmdbuf;
+ drm_via_cmdbuffer_t *cmdbuf = data;
int ret;
- LOCK_TEST_WITH_RETURN( dev, filp );
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
- 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);
- DRM_DEBUG("via_pci_cmdbuffer, buf %p size %lu\n", cmdbuf.buf,
- cmdbuf.size);
-
- ret = via_dispatch_pci_cmdbuffer(dev, &cmdbuf);
+ ret = via_dispatch_pci_cmdbuffer(dev, cmdbuf);
if (ret) {
return ret;
}
return 0;
}
-
static inline uint32_t *via_align_buffer(drm_via_private_t * dev_priv,
uint32_t * vb, int qw_count)
{
- for (; qw_count > 0; --qw_count) {
+ for (; qw_count > 0; --qw_count) {
VIA_OUT_RING_QW(HC_DUMMY, HC_DUMMY);
}
return vb;
}
-
/*
* This function is used internally by ring buffer mangement code.
*
* modifying the pause address stored in the buffer itself. If
* the regulator has already paused, restart it.
*/
-static int via_hook_segment(drm_via_private_t *dev_priv,
+static int via_hook_segment(drm_via_private_t * dev_priv,
uint32_t pause_addr_hi, uint32_t pause_addr_lo,
int no_pci_fire)
{
int paused, count;
volatile uint32_t *paused_at = dev_priv->last_pause_ptr;
+ uint32_t reader,ptr;
+ paused = 0;
via_flush_write_combine();
- while(! *(via_get_dma(dev_priv)-1));
- *dev_priv->last_pause_ptr = pause_addr_lo;
+ (void) *(volatile uint32_t *)(via_get_dma(dev_priv) -1);
+ *paused_at = pause_addr_lo;
via_flush_write_combine();
-
- /*
- * The below statement is inserted to really force the flush.
- * Not sure it is needed.
- */
-
- while(! *dev_priv->last_pause_ptr);
+ (void) *paused_at;
+ reader = *(dev_priv->hw_addr_ptr);
+ ptr = ((volatile char *)paused_at - dev_priv->dma_ptr) +
+ dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr + 4;
dev_priv->last_pause_ptr = via_get_dma(dev_priv) - 1;
- while(! *dev_priv->last_pause_ptr);
-
- paused = 0;
- count = 20;
-
- while (!(paused = (VIA_READ(0x41c) & 0x80000000)) && count--);
- if ((count <= 8) && (count >= 0)) {
- uint32_t rgtr, ptr;
- rgtr = *(dev_priv->hw_addr_ptr);
- ptr = ((char *)dev_priv->last_pause_ptr - dev_priv->dma_ptr) +
- dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr + 4 -
- CMDBUF_ALIGNMENT_SIZE;
- if (rgtr <= ptr) {
- DRM_ERROR("Command regulator\npaused at count %d, address %x, "
- "while current pause address is %x.\n"
- "Please mail this message to "
- "<unichrome-devel@lists.sourceforge.net>\n",
- count, rgtr, ptr);
- }
+ if ((ptr - reader) <= dev_priv->dma_diff ) {
+ count = 10000000;
+ while (!(paused = (VIA_READ(0x41c) & 0x80000000)) && count--);
}
-
+
if (paused && !no_pci_fire) {
- uint32_t rgtr,ptr;
- uint32_t ptr_low;
-
- count = 1000000;
- while ((VIA_READ(VIA_REG_STATUS) & VIA_CMD_RGTR_BUSY) && count--);
-
- rgtr = *(dev_priv->hw_addr_ptr);
- ptr = ((char *)paused_at - dev_priv->dma_ptr) +
- dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr + 4;
-
-
- ptr_low = (ptr > 3*CMDBUF_ALIGNMENT_SIZE) ?
- ptr - 3*CMDBUF_ALIGNMENT_SIZE : 0;
- if (rgtr <= ptr && rgtr >= ptr_low) {
+ reader = *(dev_priv->hw_addr_ptr);
+ if ((ptr - reader) == dev_priv->dma_diff) {
+
+ /*
+ * There is a concern that these writes may stall the PCI bus
+ * if the GPU is not idle. However, idling the GPU first
+ * doesn't make a difference.
+ */
+
VIA_WRITE(VIA_REG_TRANSET, (HC_ParaType_PreCR << 16));
VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
- }
+ VIA_READ(VIA_REG_TRANSPACE);
+ }
}
return paused;
}
-
-
static int via_wait_idle(drm_via_private_t * dev_priv)
{
int count = 10000000;
+
+ while (!(VIA_READ(VIA_REG_STATUS) & VIA_VR_QUEUE_BUSY) && count--);
+
while (count-- && (VIA_READ(VIA_REG_STATUS) &
(VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY |
VIA_3D_ENG_BUSY))) ;
}
static uint32_t *via_align_cmd(drm_via_private_t * dev_priv, uint32_t cmd_type,
- uint32_t addr, uint32_t *cmd_addr_hi,
- uint32_t *cmd_addr_lo,
- int skip_wait)
+ uint32_t addr, uint32_t * cmd_addr_hi,
+ uint32_t * cmd_addr_lo, int skip_wait)
{
uint32_t agp_base;
uint32_t cmd_addr, addr_lo, addr_hi;
uint32_t qw_pad_count;
if (!skip_wait)
- via_cmdbuf_wait(dev_priv, 2*CMDBUF_ALIGNMENT_SIZE);
+ via_cmdbuf_wait(dev_priv, 2 * CMDBUF_ALIGNMENT_SIZE);
vb = via_get_dma(dev_priv);
- VIA_OUT_RING_QW( HC_HEADER2 | ((VIA_REG_TRANSET >> 2) << 12) |
- (VIA_REG_TRANSPACE >> 2), HC_ParaType_PreCR << 16);
+ VIA_OUT_RING_QW(HC_HEADER2 | ((VIA_REG_TRANSET >> 2) << 12) |
+ (VIA_REG_TRANSPACE >> 2), HC_ParaType_PreCR << 16);
agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
qw_pad_count = (CMDBUF_ALIGNMENT_SIZE >> 3) -
- ((dev_priv->dma_low & CMDBUF_ALIGNMENT_MASK) >> 3);
+ ((dev_priv->dma_low & CMDBUF_ALIGNMENT_MASK) >> 3);
-
- cmd_addr = (addr) ? addr :
- agp_base + dev_priv->dma_low - 8 + (qw_pad_count << 3);
+ cmd_addr = (addr) ? addr :
+ agp_base + dev_priv->dma_low - 8 + (qw_pad_count << 3);
addr_lo = ((HC_SubA_HAGPBpL << 24) | (cmd_type & HC_HAGPBpID_MASK) |
(cmd_addr & HC_HAGPBpL_MASK));
addr_hi = ((HC_SubA_HAGPBpH << 24) | (cmd_addr >> 24));
vb = via_align_buffer(dev_priv, vb, qw_pad_count - 1);
- VIA_OUT_RING_QW(*cmd_addr_hi = addr_hi,
- *cmd_addr_lo = addr_lo);
+ VIA_OUT_RING_QW(*cmd_addr_hi = addr_hi, *cmd_addr_lo = addr_lo);
return vb;
}
-
-
-
static void via_cmdbuf_start(drm_via_private_t * dev_priv)
{
uint32_t pause_addr_lo, pause_addr_hi;
uint32_t end_addr, end_addr_lo;
uint32_t command;
uint32_t agp_base;
-
+ uint32_t ptr;
+ uint32_t reader;
+ int count;
dev_priv->dma_low = 0;
command = ((HC_SubA_HAGPCMNT << 24) | (start_addr >> 24) |
((end_addr & 0xff000000) >> 16));
- dev_priv->last_pause_ptr =
- via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0,
- &pause_addr_hi, & pause_addr_lo, 1) - 1;
+ dev_priv->last_pause_ptr =
+ via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0,
+ &pause_addr_hi, &pause_addr_lo, 1) - 1;
via_flush_write_combine();
- while(! *dev_priv->last_pause_ptr);
+ (void) *(volatile uint32_t *)dev_priv->last_pause_ptr;
VIA_WRITE(VIA_REG_TRANSET, (HC_ParaType_PreCR << 16));
VIA_WRITE(VIA_REG_TRANSPACE, command);
VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
-
+ DRM_WRITEMEMORYBARRIER();
VIA_WRITE(VIA_REG_TRANSPACE, command | HC_HAGPCMNT_MASK);
+ VIA_READ(VIA_REG_TRANSPACE);
+
+ dev_priv->dma_diff = 0;
+
+ count = 10000000;
+ while (!(VIA_READ(0x41c) & 0x80000000) && count--);
+
+ reader = *(dev_priv->hw_addr_ptr);
+ ptr = ((volatile char *)dev_priv->last_pause_ptr - dev_priv->dma_ptr) +
+ dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr + 4;
+
+ /*
+ * This is the difference between where we tell the
+ * command reader to pause and where it actually pauses.
+ * This differs between hw implementation so we need to
+ * detect it.
+ */
+
+ dev_priv->dma_diff = ptr - reader;
}
-static void via_pad_cache(drm_via_private_t *dev_priv, int qwords)
+static void via_pad_cache(drm_via_private_t * dev_priv, int qwords)
{
uint32_t *vb;
via_cmdbuf_wait(dev_priv, qwords + 2);
vb = via_get_dma(dev_priv);
- VIA_OUT_RING_QW( HC_HEADER2, HC_ParaType_NotTex << 16);
- via_align_buffer(dev_priv,vb,qwords);
+ VIA_OUT_RING_QW(HC_HEADER2, HC_ParaType_NotTex << 16);
+ via_align_buffer(dev_priv, vb, qwords);
}
static inline void via_dummy_bitblt(drm_via_private_t * dev_priv)
uint32_t *vb = via_get_dma(dev_priv);
SetReg2DAGP(0x0C, (0 | (0 << 16)));
SetReg2DAGP(0x10, 0 | (0 << 16));
- SetReg2DAGP(0x0, 0x1 | 0x2000 | 0xAA000000);
+ SetReg2DAGP(0x0, 0x1 | 0x2000 | 0xAA000000);
}
-
static void via_cmdbuf_jump(drm_via_private_t * dev_priv)
{
uint32_t agp_base;
uint32_t pause_addr_lo, pause_addr_hi;
uint32_t jump_addr_lo, jump_addr_hi;
volatile uint32_t *last_pause_ptr;
- uint32_t dma_low_save1, dma_low_save2;
agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
- via_align_cmd(dev_priv, HC_HAGPBpID_JUMP, 0, &jump_addr_hi,
+ via_align_cmd(dev_priv, HC_HAGPBpID_JUMP, 0, &jump_addr_hi,
&jump_addr_lo, 0);
-
- dev_priv->dma_wrap = dev_priv->dma_low;
+ dev_priv->dma_wrap = dev_priv->dma_low;
/*
* Wrap command buffer to the beginning.
}
via_dummy_bitblt(dev_priv);
- via_dummy_bitblt(dev_priv);
+ via_dummy_bitblt(dev_priv);
- last_pause_ptr = via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, &pause_addr_hi,
- &pause_addr_lo, 0) -1;
- via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, &pause_addr_hi,
+ last_pause_ptr =
+ via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, &pause_addr_hi,
+ &pause_addr_lo, 0) - 1;
+ via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, &pause_addr_hi,
&pause_addr_lo, 0);
*last_pause_ptr = pause_addr_lo;
- dma_low_save1 = dev_priv->dma_low;
-
- /*
- * Now, set a trap that will pause the regulator if it tries to rerun the old
- * command buffer. (Which may happen if via_hook_segment detecs a command regulator pause
- * and reissues the jump command over PCI, while the regulator has already taken the jump
- * and actually paused at the current buffer end).
- * There appears to be no other way to detect this condition, since the hw_addr_pointer
- * does not seem to get updated immediately when a jump occurs.
- */
-
- last_pause_ptr = via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, &pause_addr_hi,
- &pause_addr_lo, 0) -1;
- via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, &pause_addr_hi,
- &pause_addr_lo, 0);
- *last_pause_ptr = pause_addr_lo;
- dma_low_save2 = dev_priv->dma_low;
- dev_priv->dma_low = dma_low_save1;
via_hook_segment( dev_priv, jump_addr_hi, jump_addr_lo, 0);
- dev_priv->dma_low = dma_low_save2;
- via_hook_segment( dev_priv, pause_addr_hi, pause_addr_lo, 0);
}
static void via_cmdbuf_rewind(drm_via_private_t * dev_priv)
{
- via_cmdbuf_jump(dev_priv);
+ via_cmdbuf_jump(dev_priv);
}
static void via_cmdbuf_flush(drm_via_private_t * dev_priv, uint32_t cmd_type)
uint32_t pause_addr_lo, pause_addr_hi;
via_align_cmd(dev_priv, cmd_type, 0, &pause_addr_hi, &pause_addr_lo, 0);
- via_hook_segment( dev_priv, pause_addr_hi, pause_addr_lo, 0);
+ via_hook_segment(dev_priv, pause_addr_hi, pause_addr_lo, 0);
}
-
static void via_cmdbuf_pause(drm_via_private_t * dev_priv)
{
via_cmdbuf_flush(dev_priv, HC_HAGPBpID_PAUSE);
* User interface to the space and lag functions.
*/
-int
-via_cmdbuf_size(DRM_IOCTL_ARGS)
+static int via_cmdbuf_size(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
- drm_via_cmdbuf_size_t d_siz;
+ drm_via_cmdbuf_size_t *d_siz = data;
int ret = 0;
uint32_t tmp_size, count;
drm_via_private_t *dev_priv;
DRM_DEBUG("via cmdbuf_size\n");
- LOCK_TEST_WITH_RETURN( dev, filp );
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
dev_priv = (drm_via_private_t *) dev->dev_private;
if (dev_priv->ring.virtual_start == NULL) {
DRM_ERROR("%s called without initializing AGP ring buffer.\n",
__FUNCTION__);
- return DRM_ERR(EFAULT);
+ return -EFAULT;
}
- DRM_COPY_FROM_USER_IOCTL(d_siz, (drm_via_cmdbuf_size_t *) data,
- sizeof(d_siz));
-
-
count = 1000000;
- tmp_size = d_siz.size;
- switch(d_siz.func) {
+ tmp_size = d_siz->size;
+ switch (d_siz->func) {
case VIA_CMDBUF_SPACE:
- while (((tmp_size = via_cmdbuf_space(dev_priv)) < d_siz.size) && count--) {
- if (!d_siz.wait) {
+ while (((tmp_size = via_cmdbuf_space(dev_priv)) < d_siz->size)
+ && count--) {
+ if (!d_siz->wait) {
break;
}
}
if (!count) {
DRM_ERROR("VIA_CMDBUF_SPACE timed out.\n");
- ret = DRM_ERR(EAGAIN);
+ ret = -EAGAIN;
}
break;
case VIA_CMDBUF_LAG:
- while (((tmp_size = via_cmdbuf_lag(dev_priv)) > d_siz.size) && count--) {
- if (!d_siz.wait) {
+ while (((tmp_size = via_cmdbuf_lag(dev_priv)) > d_siz->size)
+ && count--) {
+ if (!d_siz->wait) {
break;
}
}
if (!count) {
DRM_ERROR("VIA_CMDBUF_LAG timed out.\n");
- ret = DRM_ERR(EAGAIN);
+ ret = -EAGAIN;
}
break;
default:
- ret = DRM_ERR(EFAULT);
+ ret = -EFAULT;
}
- d_siz.size = tmp_size;
+ d_siz->size = tmp_size;
- DRM_COPY_TO_USER_IOCTL((drm_via_cmdbuf_size_t *) data, d_siz,
- sizeof(d_siz));
return ret;
}
+
+struct drm_ioctl_desc via_ioctls[] = {
+ DRM_IOCTL_DEF(DRM_VIA_ALLOCMEM, via_mem_alloc, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_FREEMEM, via_mem_free, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_AGP_INIT, via_agp_init, DRM_AUTH|DRM_MASTER),
+ DRM_IOCTL_DEF(DRM_VIA_FB_INIT, via_fb_init, DRM_AUTH|DRM_MASTER),
+ DRM_IOCTL_DEF(DRM_VIA_MAP_INIT, via_map_init, DRM_AUTH|DRM_MASTER),
+ DRM_IOCTL_DEF(DRM_VIA_DEC_FUTEX, via_decoder_futex, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_DMA_INIT, via_dma_init, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_CMDBUFFER, via_cmdbuffer, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_FLUSH, via_flush_ioctl, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_PCICMD, via_pci_cmdbuffer, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_CMDBUF_SIZE, via_cmdbuf_size, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_WAIT_IRQ, via_wait_irq, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_DMA_BLIT, via_dma_blit, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_VIA_BLIT_SYNC, via_dma_blit_sync, DRM_AUTH)
+};
+
+int via_max_ioctl = DRM_ARRAY_SIZE(via_ioctls);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff