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minor clean & document.

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This commit is contained in:
Alan Hourihane 2001-03-30 11:14:12 +00:00
parent 354fb1f00e
commit 5a370697aa
1 changed files with 4 additions and 5 deletions
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9
linux/gamma_dma.c
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@ -133,18 +133,15 @@ void gamma_dma_service(int irq, void *device, struct pt_regs *regs)
atomic_inc(&dev->counts[6]); /* _DRM_STAT_IRQ */
#if !QUEUED_DMA
#if 1
if (GAMMA_READ(GAMMA_GCOMMANDINTFLAGS) == 0x10) {
#if 0
printk("CommandErrorFlags 0x%x\n",GAMMA_READ(0xc58));
printk("GErrorFlags 0x%x\n",GAMMA_READ(0x838));
#endif
GAMMA_WRITE(GAMMA_GCOMMANDINTFLAGS, 0x10);
GAMMA_WRITE(0xc58, 0x4); /* Clear DMA overrun */
GAMMA_WRITE(0xc58, 0xffffffff); /* Clear everything overrun */
GAMMA_WRITE(0xc58, 0xffffffff); /* Clear all errors */
GAMMA_WRITE(0x838, 0x2000);
}
#endif
while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3);
GAMMA_WRITE(GAMMA_GDELAYTIMER, 0xc350/2); /* 0x05S */
@ -197,7 +194,9 @@ static int gamma_do_dma(drm_device_t *dev, int locked)
}
buf = dma->next_buffer;
address = (unsigned long)buf->address;
/* WE NOW ARE ON LOGICAL PAGES!! - using page table setup in dma_init */
/* So we pass the buffer index value into the physical page offset */
address = buf->idx << 12;
length = buf->used;
DRM_DEBUG("context %d, buffer %d (%ld bytes)\n",