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nouveau: Determine trapped channel id from active grctx on >=NV40

main
Ben Skeggs 2007-08-06 21:46:55 +10:00
parent 97770db720
commit 51f24be578
1 changed files with 58 additions and 1 deletions
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59
shared-core/nouveau_irq.c
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@ -301,6 +301,61 @@ nouveau_print_bitfield_names(uint32_t value,
printk(" (unknown bits 0x%08x)", value);
}
static int
nouveau_graph_trapped_channel(struct drm_device *dev, int *channel_ret)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
int channel;
if (dev_priv->card_type < NV_40) {
channel = (NV_READ(0x400704) >> 20) & 0x1f;
} else
if (dev_priv->card_type < NV_50) {
uint32_t cur_grctx = (NV_READ(0x40032C) & 0xfffff) << 4;
/* 0x400704 *sometimes* contains a sensible channel ID, but
* mostly not.. for now lookup which channel owns the active
* PGRAPH context. Probably a better way, but this'll do
* for now.
*/
for (channel = 0; channel < 32; channel++) {
if (dev_priv->fifos[channel] == NULL)
continue;
if (cur_grctx ==
dev_priv->fifos[channel]->ramin_grctx->instance)
break;
}
if (channel == 32) {
DRM_ERROR("AIII, unable to determine active channel "
"from PGRAPH context 0x%08x\n", cur_grctx);
return -EINVAL;
}
} else {
uint32_t cur_grctx = (NV_READ(0x40032C) & 0xfffff) << 12;
for (channel = 0; channel < 128; channel++) {
if (dev_priv->fifos[channel] == NULL)
continue;
if (cur_grctx ==
dev_priv->fifos[channel]->ramin_grctx->instance)
break;
}
if (channel == 128) {
DRM_ERROR("AIII, unable to determine active channel "
"from PGRAPH context 0x%08x\n", cur_grctx);
return -EINVAL;
}
}
if (channel > nouveau_fifo_number(dev) ||
dev_priv->fifos[channel] == NULL) {
DRM_ERROR("AIII, invalid/inactive channel id %d\n", channel);
return -EINVAL;
}
return 0;
}
static void
nouveau_graph_dump_trap_info(struct drm_device *dev)
{
@ -310,8 +365,10 @@ nouveau_graph_dump_trap_info(struct drm_device *dev)
uint32_t method, subc, data;
uint32_t nsource, nstatus;
if (nouveau_graph_trapped_channel(dev, &channel))
channel = -1;
address = NV_READ(0x400704);
channel = (address >> 20) & 0x1F;
subc = (address >> 16) & 0x7;
method = address & 0x1FFC;
data = NV_READ(0x400708);