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-rw-r--r--shared-core/via_dma.c125
-rw-r--r--shared-core/via_drv.h4
-rw-r--r--shared-core/via_irq.c1
3 files changed, 35 insertions, 95 deletions
diff --git a/shared-core/via_dma.c b/shared-core/via_dma.c
index a0fc8fd4..c8aad337 100644
--- a/shared-core/via_dma.c
+++ b/shared-core/via_dma.c
@@ -8,14 +8,17 @@
* Copyright 2004 Digeo, Inc., Palo Alto, CA, U.S.A.
* All Rights Reserved.
*
+ * Copyright 2004 The Unichrome project.
+ * All Rights Reserved.
+ *
**************************************************************************/
#include "drmP.h"
#include "drm.h"
#include "via_drm.h"
#include "via_drv.h"
+#include "via_3d_reg.h"
-#define VIA_2D_CMD 0xF0000000
#define via_flush_write_combine() DRM_MEMORYBARRIER()
#define VIA_OUT_RING_QW(w1,w2) \
@@ -61,12 +64,12 @@ static int via_check_command_stream(const uint32_t * buf, unsigned int size)
for (i = 0; i < size; ++i) {
offset = *buf;
buf += 2;
- if ((offset > ((0x3FF >> 2) | VIA_2D_CMD)) &&
- (offset < ((0xC00 >> 2) | VIA_2D_CMD))) {
+ if ((offset > ((0x3FF >> 2) | HALCYON_HEADER1)) &&
+ (offset < ((0xC00 >> 2) | HALCYON_HEADER1))) {
DRM_ERROR
("Attempt to access Burst Command / 3D Area.\n");
return DRM_ERR(EINVAL);
- } else if (offset > ((0xDFF >> 2) | VIA_2D_CMD)) {
+ } else if (offset > ((0xDFF >> 2) | HALCYON_HEADER1)) {
DRM_ERROR("Attempt to access DMA or VGA registers.\n");
return DRM_ERR(EINVAL);
}
@@ -291,7 +294,7 @@ static int via_parse_pci_cmdbuffer(drm_device_t * dev, const char *buf,
size >>= 3;
for (i = 0; i < size; ++i) {
- offset = (*regbuf++ & ~VIA_2D_CMD) << 2;
+ offset = (*regbuf++ & ~HALCYON_HEADER1) << 2;
value = *regbuf++;
VIA_WRITE(offset, value);
}
@@ -356,7 +359,6 @@ int via_pci_cmdbuffer(DRM_IOCTL_ARGS)
}
/************************************************************************/
-#include "via_3d_reg.h"
#define CMDBUF_ALIGNMENT_SIZE (0x100)
#define CMDBUF_ALIGNMENT_MASK (0xff)
@@ -373,7 +375,7 @@ int via_pci_cmdbuffer(DRM_IOCTL_ARGS)
#define VIA_VR_QUEUE_BUSY 0x00020000 /* Virtual Queue is busy */
#define SetReg2DAGP(nReg, nData) { \
- *((uint32_t *)(vb)) = ((nReg) >> 2) | 0xF0000000; \
+ *((uint32_t *)(vb)) = ((nReg) >> 2) | HALCYON_HEADER1; \
*((uint32_t *)(vb) + 1) = (nData); \
vb = ((uint32_t *)vb) + 2; \
dev_priv->dma_low +=8; \
@@ -534,106 +536,47 @@ static void via_cmdbuf_start(drm_via_private_t * dev_priv)
static inline void via_dummy_bitblt(drm_via_private_t * dev_priv)
{
uint32_t *vb = via_get_dma(dev_priv);
- /* GEDST */
SetReg2DAGP(0x0C, (0 | (0 << 16)));
- /* GEWD */
SetReg2DAGP(0x10, 0 | (0 << 16));
- /* BITBLT */
SetReg2DAGP(0x0, 0x1 | 0x2000 | 0xAA000000);
}
-
static void via_cmdbuf_jump(drm_via_private_t * dev_priv)
{
uint32_t agp_base;
- uint32_t pause_addr, pause_addr_lo, pause_addr_hi;
- uint32_t start_addr;
- uint32_t end_addr, end_addr_lo;
- uint32_t *vb;
- uint32_t qw_pad_count;
- uint32_t command;
- uint32_t jump_addr, jump_addr_lo, jump_addr_hi;
-
- /* Seems like Unichrome has bug that when the PAUSE register is
- * set in the AGP command stream immediately after a PCI write to
- * the same register, the command regulator goes into a looping
- * state. Prepending a BitBLT command to stall the command
- * regulator for a moment seems to solve the problem.
- */
- via_cmdbuf_wait(dev_priv, 48);
- via_dummy_bitblt(dev_priv);
-
- via_cmdbuf_wait(dev_priv, 2 * CMDBUF_ALIGNMENT_SIZE);
-
- /* At end of buffer, rewind with a JUMP command. */
- vb = via_get_dma(dev_priv);
-
- *vb++ = HC_HEADER2 | ((VIA_REG_TRANSET >> 2) << 12) |
- (VIA_REG_TRANSPACE >> 2);
- *vb++ = (HC_ParaType_PreCR << 16);
- dev_priv->dma_low += 8;
-
- qw_pad_count = (CMDBUF_ALIGNMENT_SIZE >> 3) -
- ((dev_priv->dma_low & CMDBUF_ALIGNMENT_MASK) >> 3);
+ uint32_t pause_addr_lo, pause_addr_hi;
+ uint32_t jump_addr_lo, jump_addr_hi;
+ volatile uint32_t *last_pause_ptr;
agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
- start_addr = agp_base;
- end_addr = agp_base + dev_priv->dma_low - 8 + (qw_pad_count << 3);
-
- jump_addr = end_addr;
- jump_addr_lo = ((HC_SubA_HAGPBpL << 24) | HC_HAGPBpID_JUMP |
- (jump_addr & 0xffffff));
- jump_addr_hi = ((HC_SubA_HAGPBpH << 24) | (jump_addr >> 24));
-
- end_addr_lo = ((HC_SubA_HAGPBendL << 24) | (end_addr & 0xFFFFFF));
- command = ((HC_SubA_HAGPCMNT << 24) | (start_addr >> 24) |
- ((end_addr & 0xff000000) >> 16));
-
- *vb++ = command;
- *vb++ = end_addr_lo;
- dev_priv->dma_low += 8;
-
- vb = via_align_buffer(dev_priv, vb, qw_pad_count - 1);
-
- /* Now at beginning of buffer, make sure engine will pause here. */
+ via_align_cmd(dev_priv, HC_HAGPBpID_JUMP, 0, &jump_addr_hi,
+ &jump_addr_lo);
+
dev_priv->dma_low = 0;
if (via_cmdbuf_wait(dev_priv, CMDBUF_ALIGNMENT_SIZE) != 0) {
DRM_ERROR("via_cmdbuf_jump failed\n");
}
- vb = via_get_dma(dev_priv);
-
- end_addr = agp_base + dev_priv->dma_high;
- end_addr_lo = ((HC_SubA_HAGPBendL << 24) | (end_addr & 0xFFFFFF));
- command = ((HC_SubA_HAGPCMNT << 24) | (start_addr >> 24) |
- ((end_addr & 0xff000000) >> 16));
-
- qw_pad_count = (CMDBUF_ALIGNMENT_SIZE >> 3) -
- ((dev_priv->dma_low & CMDBUF_ALIGNMENT_MASK) >> 3);
-
- pause_addr = agp_base + dev_priv->dma_low - 8 + (qw_pad_count << 3);
- pause_addr_lo = ((HC_SubA_HAGPBpL << 24) | HC_HAGPBpID_PAUSE |
- (pause_addr & 0xffffff));
- pause_addr_hi = ((HC_SubA_HAGPBpH << 24) | (pause_addr >> 24));
-
- *vb++ = HC_HEADER2 | ((VIA_REG_TRANSET >> 2) << 12) |
- (VIA_REG_TRANSPACE >> 2);
- *vb++ = (HC_ParaType_PreCR << 16);
- dev_priv->dma_low += 8;
-
- *vb++ = pause_addr_hi;
- *vb++ = pause_addr_lo;
- dev_priv->dma_low += 8;
+ /*
+ * The command regulator needs to stall for a while since it probably
+ * had a concussion during the jump... It will stall at the second
+ * bitblt since the 2D engine is busy with the first.
+ */
- *vb++ = command;
- *vb++ = end_addr_lo;
- dev_priv->dma_low += 8;
+ 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) -1;
- vb = via_align_buffer(dev_priv, vb, qw_pad_count - 4);
+ /*
+ * The regulator may still be suffering from the shock of the jump.
+ * Add another pause command to make sure it really will get itself together
+ * and pause.
+ */
- *vb++ = pause_addr_hi;
- *vb++ = pause_addr_lo;
- dev_priv->dma_low += 8;
+ via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, &pause_addr_hi,
+ &pause_addr_lo);
+ *last_pause_ptr = pause_addr_lo;
via_hook_segment( dev_priv, jump_addr_hi, jump_addr_lo, 0);
}
@@ -641,9 +584,7 @@ static void via_cmdbuf_jump(drm_via_private_t * dev_priv)
static void via_cmdbuf_rewind(drm_via_private_t * dev_priv)
{
- /* via_cmdbuf_jump(dev_priv); */
- via_cmdbuf_reset(dev_priv);
- via_cmdbuf_start(dev_priv);
+ via_cmdbuf_jump(dev_priv);
}
static void via_cmdbuf_flush(drm_via_private_t * dev_priv, uint32_t cmd_type)
diff --git a/shared-core/via_drv.h b/shared-core/via_drv.h
index 9e21f5b5..cce54d02 100644
--- a/shared-core/via_drv.h
+++ b/shared-core/via_drv.h
@@ -28,11 +28,11 @@
#define DRIVER_NAME "via"
#define DRIVER_DESC "VIA Unichrome"
-#define DRIVER_DATE "20041030"
+#define DRIVER_DATE "20041101"
#define DRIVER_MAJOR 2
#define DRIVER_MINOR 0
-#define DRIVER_PATCHLEVEL 2
+#define DRIVER_PATCHLEVEL 3
typedef struct drm_via_ring_buffer {
drm_map_t map;
diff --git a/shared-core/via_irq.c b/shared-core/via_irq.c
index f2cd79df..3d54edc2 100644
--- a/shared-core/via_irq.c
+++ b/shared-core/via_irq.c
@@ -53,7 +53,6 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
int handled = 0;
status = VIA_READ(VIA_REG_INTERRUPT);
- DRM_DEBUG("viadrv_irq_handler Status: %x\n", status);
if (status & VIA_IRQ_VBI_PENDING) {
atomic_inc(&dev->vbl_received);
DRM_WAKEUP(&dev->vbl_queue);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 05:10:35 +0000