diff options
Diffstat (limited to 'sys/dev/agp/agp.c')
| -rw-r--r-- | sys/dev/agp/agp.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/sys/dev/agp/agp.c b/sys/dev/agp/agp.c index ab48085..09e2848 100644 --- a/sys/dev/agp/agp.c +++ b/sys/dev/agp/agp.c @@ -219,13 +219,16 @@ agp_generic_attach(device_t dev) * Find and map the aperture, RF_SHAREABLE for DRM but not RF_ACTIVE * because the kernel doesn't need to map it. */ - if (sc->as_aperture_rid == 0) - sc->as_aperture_rid = AGP_APBASE; - sc->as_aperture = bus_alloc_resource_any(dev, SYS_RES_MEMORY, - &sc->as_aperture_rid, RF_SHAREABLE); - if (!sc->as_aperture) - return ENOMEM; + if (sc->as_aperture_rid != -1) { + if (sc->as_aperture_rid == 0) + sc->as_aperture_rid = AGP_APBASE; + + sc->as_aperture = bus_alloc_resource_any(dev, SYS_RES_MEMORY, + &sc->as_aperture_rid, RF_SHAREABLE); + if (!sc->as_aperture) + return ENOMEM; + } /* * Work out an upper bound for agp memory allocation. This @@ -272,8 +275,9 @@ agp_free_res(device_t dev) { struct agp_softc *sc = device_get_softc(dev); - bus_release_resource(dev, SYS_RES_MEMORY, sc->as_aperture_rid, - sc->as_aperture); + if (sc->as_aperture != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, sc->as_aperture_rid, + sc->as_aperture); mtx_destroy(&sc->as_lock); agp_flush_cache(); } @@ -729,7 +733,10 @@ agp_info_user(device_t dev, agp_info *info) info->bridge_id = pci_get_devid(dev); info->agp_mode = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4); - info->aper_base = rman_get_start(sc->as_aperture); + if (sc->as_aperture) + info->aper_base = rman_get_start(sc->as_aperture); + else + info->aper_base = 0; info->aper_size = AGP_GET_APERTURE(dev) >> 20; info->pg_total = info->pg_system = sc->as_maxmem >> AGP_PAGE_SHIFT; info->pg_used = sc->as_allocated >> AGP_PAGE_SHIFT; @@ -876,6 +883,8 @@ agp_mmap(struct cdev *kdev, vm_ooffset_t offset, vm_paddr_t *paddr, if (offset > AGP_GET_APERTURE(dev)) return -1; + if (sc->as_aperture == NULL) + return -1; *paddr = rman_get_start(sc->as_aperture) + offset; return 0; } @@ -917,8 +926,11 @@ agp_get_info(device_t dev, struct agp_info *info) info->ai_mode = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4); - info->ai_aperture_base = rman_get_start(sc->as_aperture); - info->ai_aperture_size = rman_get_size(sc->as_aperture); + if (sc->as_aperture != NULL) + info->ai_aperture_base = rman_get_start(sc->as_aperture); + else + info->ai_aperture_base = 0; + info->ai_aperture_size = AGP_GET_APERTURE(dev); info->ai_memory_allowed = sc->as_maxmem; info->ai_memory_used = sc->as_allocated; } |
