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| author | kib <kib@FreeBSD.org> | 2014-11-18 13:01:41 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2014-11-18 13:01:41 +0000 |
| commit | 1ce4957ffdf838d8da5d64f55e16a53af6aff248 (patch) | |
| tree | 42a88545cc1355bf0a545508e28ba2437f47ba18 | |
| parent | e4b2ee7e2b8167b0254356fea784913422730087 (diff) | |
| download | FreeBSD-src-1ce4957ffdf838d8da5d64f55e16a53af6aff248.zip FreeBSD-src-1ce4957ffdf838d8da5d64f55e16a53af6aff248.tar.gz | |
MFC r274377:
On 965 and higher, map GTT as write-combining.
| -rw-r--r-- | sys/dev/agp/agp_i810.c | 51 |
1 files changed, 43 insertions, 8 deletions
diff --git a/sys/dev/agp/agp_i810.c b/sys/dev/agp/agp_i810.c index 725aa99..e28aff1 100644 --- a/sys/dev/agp/agp_i810.c +++ b/sys/dev/agp/agp_i810.c @@ -113,6 +113,8 @@ static int agp_sb_get_gtt_total_entries(device_t dev); static int agp_i810_install_gatt(device_t dev); static int agp_i830_install_gatt(device_t dev); +static int agp_i965_install_gatt(device_t dev); +static int agp_g4x_install_gatt(device_t dev); static void agp_i810_deinstall_gatt(device_t dev); static void agp_i830_deinstall_gatt(device_t dev); @@ -395,7 +397,7 @@ static const struct agp_i810_driver agp_i810_g965_driver = { .get_stolen_size = agp_i915_get_stolen_size, .get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries, .get_gtt_total_entries = agp_i965_get_gtt_total_entries, - .install_gatt = agp_i830_install_gatt, + .install_gatt = agp_i965_install_gatt, .deinstall_gatt = agp_i830_deinstall_gatt, .write_gtt = agp_i965_write_gtt, .install_gtt_pte = agp_i965_install_gtt_pte, @@ -464,7 +466,7 @@ static const struct agp_i810_driver agp_i810_g4x_driver = { .get_stolen_size = agp_i915_get_stolen_size, .get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries, .get_gtt_total_entries = agp_gen5_get_gtt_total_entries, - .install_gatt = agp_i830_install_gatt, + .install_gatt = agp_g4x_install_gatt, .deinstall_gatt = agp_i830_deinstall_gatt, .write_gtt = agp_g4x_write_gtt, .install_gtt_pte = agp_g4x_install_gtt_pte, @@ -487,7 +489,7 @@ static const struct agp_i810_driver agp_i810_sb_driver = { .get_stolen_size = agp_sb_get_stolen_size, .get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries, .get_gtt_total_entries = agp_sb_get_gtt_total_entries, - .install_gatt = agp_i830_install_gatt, + .install_gatt = agp_g4x_install_gatt, .deinstall_gatt = agp_i830_deinstall_gatt, .write_gtt = agp_sb_write_gtt, .install_gtt_pte = agp_sb_install_gtt_pte, @@ -1405,14 +1407,11 @@ agp_i810_install_gatt(device_t dev) return (0); } -static int -agp_i830_install_gatt(device_t dev) +static void +agp_i830_install_gatt_init(struct agp_i810_softc *sc) { - struct agp_i810_softc *sc; uint32_t pgtblctl; - sc = device_get_softc(dev); - /* * The i830 automatically initializes the 128k gatt on boot. * GATT address is already in there, make sure it's enabled. @@ -1422,10 +1421,46 @@ agp_i830_install_gatt(device_t dev) bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, pgtblctl); sc->gatt->ag_physical = pgtblctl & ~1; +} + +static int +agp_i830_install_gatt(device_t dev) +{ + struct agp_i810_softc *sc; + + sc = device_get_softc(dev); + agp_i830_install_gatt_init(sc); return (0); } static int +agp_gen4_install_gatt(device_t dev, const vm_size_t gtt_offset) +{ + struct agp_i810_softc *sc; + + sc = device_get_softc(dev); + pmap_change_attr((vm_offset_t)rman_get_virtual(sc->sc_res[0]) + + gtt_offset, rman_get_size(sc->sc_res[0]) - gtt_offset, + VM_MEMATTR_WRITE_COMBINING); + agp_i830_install_gatt_init(sc); + return (0); +} + +static int +agp_i965_install_gatt(device_t dev) +{ + + return (agp_gen4_install_gatt(dev, 512 * 1024)); +} + +static int +agp_g4x_install_gatt(device_t dev) +{ + + return (agp_gen4_install_gatt(dev, 2 * 1024 * 1024)); +} + +static int agp_i810_attach(device_t dev) { struct agp_i810_softc *sc; |
