/*
* XXX drm_bus_borrow is a horrible kludge!
*/
static bool
drm_bus_borrow(bus_addr_t base, bus_space_handle_t *handlep)
{
#if NAGP_I810 > 0
if (agp_i810_borrow(base, handlep))
return true;
#endif
#if NGENFB > 0
if (genfb_borrow(base, handlep))
return true;
#endif
return false;
}
void *drm_ioremap(drm_device_t *dev, drm_local_map_t *map)
{
int i, reg, reason;
for(i = 0; i<DRM_MAX_PCI_RESOURCE; i++) {
reg = PCI_MAPREG_START + i*4;
if ((dev->pci_map_data[i].maptype == PCI_MAPREG_TYPE_MEM ||
dev->pci_map_data[i].maptype ==
(PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT)) &&
dev->pci_map_data[i].base == map->offset &&
dev->pci_map_data[i].size >= map->size)
{
map->bst = dev->pa.pa_memt;
map->cnt = &(dev->pci_map_data[i].mapped);
map->mapsize = dev->pci_map_data[i].size;
dev->pci_map_data[i].mapped++;
if (dev->pci_map_data[i].mapped > 1)
{
map->bsh = dev->pci_map_data[i].bsh;
return dev->pci_map_data[i].vaddr;
}
if ((reason = bus_space_map(map->bst, map->offset,
dev->pci_map_data[i].size,
dev->pci_map_data[i].flags, &map->bsh)))
{
dev->pci_map_data[i].mapped--;
#if NAGP_I810 > 0 /* XXX horrible kludge: agp might have mapped it */
if (agp_i810_borrow(map->offset, &map->bsh))
return bus_space_vaddr(map->bst, map->bsh);
#endif
DRM_DEBUG("ioremap: failed to map (%d)\n",
reason);
return NULL;
}
dev->pci_map_data[i].bsh = map->bsh;
dev->pci_map_data[i].vaddr =
bus_space_vaddr(map->bst, map->bsh);
DRM_DEBUG("ioremap mem found: %p\n",
dev->pci_map_data[i].vaddr);
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;
}
static void *
drm_netbsd_ioremap(struct drm_device *dev, drm_local_map_t *map, int wc)
{
bus_space_handle_t h;
int i, reg, reason;
for(i = 0; i<DRM_MAX_PCI_RESOURCE; i++) {
reg = PCI_MAPREG_START + i*4;
/* Does the requested mapping lie within this resource? */
if ((dev->pci_map_data[i].maptype == PCI_MAPREG_TYPE_MEM ||
dev->pci_map_data[i].maptype ==
(PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT)) &&
map->offset >= dev->pci_map_data[i].base &&
map->offset + map->size <= dev->pci_map_data[i].base +
dev->pci_map_data[i].size)
{
map->bst = dev->pa.pa_memt;
map->fullmap = &(dev->pci_map_data[i]);
map->mapsize = map->size;
dev->pci_map_data[i].mapped++;
/* If we've already mapped this resource in, handle
* submapping if needed, give caller a bus_space handle
* and pointer for the offest they asked for */
if (dev->pci_map_data[i].mapped > 1)
{
if ((reason = bus_space_subregion(
dev->pa.pa_memt,
dev->pci_map_data[i].bsh,
map->offset - dev->pci_map_data[i].base,
map->size, &h)) != 0) {
DRM_DEBUG("ioremap failed to "
"bus_space_subregion: %d\n",
reason);
return NULL;
}
map->bsh = h;
map->handle = bus_space_vaddr(dev->pa.pa_memt,
h);
return map->handle;
}
/* Map in entirety of resource - full size and handle
* go in pci_map_data, specific mapping in callers
* drm_local_map_t */
DRM_DEBUG("ioremap%s: flags %d\n", wc ? "_wc" : "",
dev->pci_map_data[i].flags);
if ((reason = bus_space_map(map->bst,
dev->pci_map_data[i].base,
dev->pci_map_data[i].size,
dev->pci_map_data[i].flags,
&dev->pci_map_data[i].bsh)))
{
dev->pci_map_data[i].mapped--;
#if NAGP_I810 > 0 /* XXX horrible kludge: agp might have mapped it */
if (agp_i810_borrow(map->offset, &map->bsh))
return bus_space_vaddr(map->bst, map->bsh);
#endif
#if NGENFB > 0
if (genfb_borrow(map->offset, &map->bsh))
return bus_space_vaddr(map->bst, map->bsh);
#endif
DRM_DEBUG("ioremap: failed to map (%d)\n",
reason);
return NULL;
}
dev->pci_map_data[i].vaddr = bus_space_vaddr(map->bst,
dev->pci_map_data[i].bsh);
/* Caller might have requested a submapping of that */
if ((reason = bus_space_subregion(
dev->pa.pa_memt,
dev->pci_map_data[i].bsh,
map->offset - dev->pci_map_data[i].base,
map->size, &h)) != 0) {
DRM_DEBUG("ioremap failed to "
"bus_space_subregion: %d\n",
reason);
return NULL;
}
DRM_DEBUG("ioremap mem found for %lx, %lx: %p\n",
map->offset, map->size,
dev->agp_map_data[i].vaddr);
map->bsh = h;
map->handle = bus_space_vaddr(dev->pa.pa_memt, h);
return map->handle;
}
}
/* 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->fullmap = &(dev->agp_map_data[i]);
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].base = map->offset;
dev->agp_map_data[i].size = map->size;
dev->agp_map_data[i].flags = BUS_SPACE_MAP_LINEAR |
BUS_SPACE_MAP_PREFETCHABLE;
dev->agp_map_data[i].maptype = PCI_MAPREG_TYPE_MEM;
map->fullmap = &(dev->agp_map_data[i]);
map->mapsize = dev->agp_map_data[i].size;
DRM_DEBUG("ioremap%s: flags %d\n", wc ? "_wc" : "",
dev->agp_map_data[i].flags);
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 for %lx, %lx: %p\n",
map->offset, map->size,
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;
}
