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In drm_ioremap, provide extra slots for mapping AGP memory space; it's not 

reasonable to assume that these regions will show up in a VGA BAR.
This commit is contained in:
jmcneill 2007-03-21 22:15:59 +00:00
parent ef049074f2
commit 0f6e823d07
2 changed files with 42 additions and 0 deletions
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1
sys/dev/drm/drmP.h
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@ -848,6 +848,7 @@ struct drm_device {
#elif defined(__NetBSD__) || defined(__OpenBSD__)
struct pci_attach_args pa;
pci_map_data_t pci_map_data[DRM_MAX_PCI_RESOURCE];
pci_map_data_t agp_map_data[DRM_MAX_PCI_RESOURCE];
int unit; /* drm unit number */
#endif
void *irqh; /* Handle from bus_setup_intr */

41
sys/dev/drm/drm_memory.c
View File

@ -120,6 +120,47 @@ void *drm_ioremap(drm_device_t *dev, drm_local_map_t *map)
return dev->pci_map_data[i].vaddr;
}
}
/* failed to find a valid mapping; all hope isn't lost though */
for(i = 0; i<DRM_MAX_PCI_RESOURCE; i++) {
if (dev->agp_map_data[i].mapped > 0 &&
dev->agp_map_data[i].base == map->offset &&
dev->agp_map_data[i].size >= map->size) {
map->bst = dev->pa.pa_memt;
map->cnt = &(dev->agp_map_data[i].mapped);
map->mapsize = dev->agp_map_data[i].size;
dev->agp_map_data[i].mapped++;
map->bsh = dev->agp_map_data[i].bsh;
return dev->agp_map_data[i].vaddr;
}
if (dev->agp_map_data[i].mapped == 0) {
int rv;
map->bst = dev->pa.pa_memt;
dev->agp_map_data[i].mapped++;
dev->agp_map_data[i].size = map->size;
dev->agp_map_data[i].flags = BUS_SPACE_MAP_LINEAR;
dev->agp_map_data[i].maptype = PCI_MAPREG_TYPE_MEM;
map->cnt = &(dev->agp_map_data[i].mapped);
map->mapsize = dev->agp_map_data[i].size;
rv = bus_space_map(map->bst, map->offset,
dev->agp_map_data[i].size,
dev->agp_map_data[i].flags, &map->bsh);
if (rv) {
dev->agp_map_data[i].mapped--;
DRM_DEBUG("ioremap: failed to map (%d)\n", rv);
return NULL;
}
dev->agp_map_data[i].bsh = map->bsh;
dev->agp_map_data[i].vaddr =
bus_space_vaddr(map->bst, map->bsh);
DRM_DEBUG("ioremap agp mem found: %p\n",
dev->agp_map_data[i].vaddr);
return dev->agp_map_data[i].vaddr;
}
}
/* now we can give up... */
DRM_DEBUG("drm_ioremap failed: offset=%lx size=%lu\n",
map->offset, map->size);
return NULL;