diff options
author | Nathan Whitehorn <nwhitehorn@FreeBSD.org> | 2010-10-31 18:27:05 +0000 |
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committer | Nathan Whitehorn <nwhitehorn@FreeBSD.org> | 2010-10-31 18:27:05 +0000 |
commit | 50fd2a5b9c3463b547e6556de2725b27fa0123c7 (patch) | |
tree | 7ffe7697adf784c043bb97ff9b81b9c191d14f18 /sys/dev | |
parent | c4bcebed17116bbe16ca12e73e98ca1827ee0822 (diff) | |
download | src-50fd2a5b9c3463b547e6556de2725b27fa0123c7.tar.gz src-50fd2a5b9c3463b547e6556de2725b27fa0123c7.zip |
Add a driver for the Apple Uninorth AGP host bridge found in all PowerPC
Macintoshes with an AGP bus.
Notes
Notes:
svn path=/head/; revision=214603
Diffstat (limited to 'sys/dev')
-rw-r--r-- | sys/dev/agp/agp.c | 34 | ||||
-rw-r--r-- | sys/dev/agp/agp_apple.c | 302 |
2 files changed, 325 insertions, 11 deletions
diff --git a/sys/dev/agp/agp.c b/sys/dev/agp/agp.c index ab48085109e7..09e284884700 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; } diff --git a/sys/dev/agp/agp_apple.c b/sys/dev/agp/agp_apple.c new file mode 100644 index 000000000000..e16e11489a7a --- /dev/null +++ b/sys/dev/agp/agp_apple.c @@ -0,0 +1,302 @@ +/*- + * Copyright (c) 2010 Nathan Whitehorn + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "opt_bus.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/bus.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/proc.h> + +#include <machine/resource.h> + +#include <dev/agp/agppriv.h> +#include <dev/agp/agpreg.h> +#include <dev/pci/pcivar.h> +#include <dev/pci/pcireg.h> + +#include <vm/vm.h> +#include <vm/vm_object.h> +#include <vm/pmap.h> + +#define UNIN_AGP_GART_BASE 0x8c +#define UNIN_AGP_BASE_ADDR 0x90 +#define UNIN_AGP_GART_CONTROL 0x94 + +#define UNIN_AGP_GART_INVAL 0x00000001 +#define UNIN_AGP_GART_ENABLE 0x00000100 +#define UNIN_AGP_GART_2XRESET 0x00010000 +#define UNIN_AGP_U3_GART_PERFRD 0x00080000 + +struct agp_apple_softc { + struct agp_softc agp; + uint32_t aperture; + struct agp_gatt *gatt; + int u3; + int needs_2x_reset; +}; + +static int +agp_apple_probe(device_t dev) +{ + + if (resource_disabled("agp", device_get_unit(dev))) + return (ENXIO); + + if (pci_get_class(dev) != PCIC_BRIDGE + || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) + return (ENXIO); + + if (agp_find_caps(dev) == 0) + return (ENXIO); + + if (pci_get_class(dev) != PCIC_BRIDGE + || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) + return (ENXIO); + + switch (pci_get_devid(dev)) { + case 0x0020106b: + case 0x0027106b: + device_set_desc(dev, "Apple UniNorth AGP Bridge"); + return (BUS_PROBE_DEFAULT); + case 0x002d106b: + device_set_desc(dev, "Apple UniNorth 1.5 AGP Bridge"); + return (BUS_PROBE_DEFAULT); + case 0x0034106b: + device_set_desc(dev, "Apple UniNorth 2 AGP Bridge"); + return (BUS_PROBE_DEFAULT); + case 0x004b106b: + case 0x0058106b: + case 0x0059106b: + device_set_desc(dev, "Apple U3 AGP Bridge"); + return (BUS_PROBE_DEFAULT); + case 0x0066106b: + device_set_desc(dev, "Apple Intrepid AGP Bridge"); + return (BUS_PROBE_DEFAULT); + } + + return (ENXIO); +} + +static int +agp_apple_attach(device_t dev) +{ + struct agp_apple_softc *sc = device_get_softc(dev); + int error; + + /* Record quirks */ + sc->needs_2x_reset = 0; + sc->u3 = 0; + switch (pci_get_devid(dev)) { + case 0x0020106b: + case 0x0027106b: + sc->needs_2x_reset = 1; + break; + case 0x004b106b: + case 0x0058106b: + case 0x0059106b: + sc->u3 = 1; + break; + } + + /* Set the aperture bus address base (must be 0) */ + pci_write_config(dev, UNIN_AGP_BASE_ADDR, 0, 4); + agp_set_aperture_resource(dev, -1); + + error = agp_generic_attach(dev); + if (error) + return (error); + + sc->aperture = 256*1024*1024; + + for (sc->aperture = 256*1024*1024; sc->aperture >= 4*1024*1024; + sc->aperture /= 2) { + sc->gatt = agp_alloc_gatt(dev); + if (sc->gatt) + break; + } + if (sc->aperture < 4*1024*1024) { + agp_generic_detach(dev); + return ENOMEM; + } + + /* Install the gatt. */ + AGP_SET_APERTURE(dev, sc->aperture); + + /* XXX: U3 scratch page? */ + + /* Enable the aperture and TLB. */ + AGP_FLUSH_TLB(dev); + + return (0); +} + +static int +agp_apple_detach(device_t dev) +{ + struct agp_apple_softc *sc = device_get_softc(dev); + + agp_free_cdev(dev); + + /* Disable the aperture and TLB */ + pci_write_config(dev, UNIN_AGP_GART_CONTROL, UNIN_AGP_GART_INVAL, 4); + pci_write_config(dev, UNIN_AGP_GART_CONTROL, 0, 4); + + if (sc->needs_2x_reset) { + pci_write_config(dev, UNIN_AGP_GART_CONTROL, + UNIN_AGP_GART_2XRESET, 4); + pci_write_config(dev, UNIN_AGP_GART_CONTROL, 0, 4); + } + + AGP_SET_APERTURE(dev, 0); + + agp_free_gatt(sc->gatt); + agp_free_res(dev); + return 0; +} + +static uint32_t +agp_apple_get_aperture(device_t dev) +{ + struct agp_apple_softc *sc = device_get_softc(dev); + + return (sc->aperture); +} + +static int +agp_apple_set_aperture(device_t dev, uint32_t aperture) +{ + struct agp_apple_softc *sc = device_get_softc(dev); + + /* + * Check for a multiple of 4 MB and make sure it is within the + * programmable range. + */ + if (aperture % (4*1024*1024) + || aperture < 4*1024*1024 + || aperture > ((sc->u3) ? 512 : 256)*1024*1024) + return EINVAL; + + /* The aperture value is a multiple of 4 MB */ + aperture /= (4*1024*1024); + + pci_write_config(dev, UNIN_AGP_GART_BASE, + (sc->gatt->ag_physical & 0xfffff000) | aperture, 4); + + return (0); +} + +static int +agp_apple_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical) +{ + struct agp_apple_softc *sc = device_get_softc(dev); + + if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) + return EINVAL; + + sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; + __asm __volatile("dcbst 0,%0; sync" :: + "r"(&sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT]) : "memory"); + return (0); +} + +static int +agp_apple_unbind_page(device_t dev, vm_offset_t offset) +{ + struct agp_apple_softc *sc = device_get_softc(dev); + + if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) + return EINVAL; + + sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; + __asm __volatile("dcbst 0,%0; sync" :: + "r"(&sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT]) : "memory"); + return (0); +} + +static void +agp_apple_flush_tlb(device_t dev) +{ + struct agp_apple_softc *sc = device_get_softc(dev); + uint32_t cntrl = UNIN_AGP_GART_ENABLE; + + if (sc->u3) + cntrl |= UNIN_AGP_U3_GART_PERFRD; + + pci_write_config(dev, UNIN_AGP_GART_CONTROL, + cntrl | UNIN_AGP_GART_INVAL, 4); + pci_write_config(dev, UNIN_AGP_GART_CONTROL, cntrl, 4); + + if (sc->needs_2x_reset) { + pci_write_config(dev, UNIN_AGP_GART_CONTROL, + cntrl | UNIN_AGP_GART_2XRESET, 4); + pci_write_config(dev, UNIN_AGP_GART_CONTROL, cntrl, 4); + } +} + +static device_method_t agp_apple_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, agp_apple_probe), + DEVMETHOD(device_attach, agp_apple_attach), + DEVMETHOD(device_detach, agp_apple_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + DEVMETHOD(device_suspend, bus_generic_suspend), + DEVMETHOD(device_resume, bus_generic_resume), + + /* AGP interface */ + DEVMETHOD(agp_get_aperture, agp_apple_get_aperture), + DEVMETHOD(agp_set_aperture, agp_apple_set_aperture), + DEVMETHOD(agp_bind_page, agp_apple_bind_page), + DEVMETHOD(agp_unbind_page, agp_apple_unbind_page), + DEVMETHOD(agp_flush_tlb, agp_apple_flush_tlb), + DEVMETHOD(agp_enable, agp_generic_enable), + DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), + DEVMETHOD(agp_free_memory, agp_generic_free_memory), + DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), + DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), + + { 0, 0 } +}; + +static driver_t agp_apple_driver = { + "agp", + agp_apple_methods, + sizeof(struct agp_apple_softc), +}; + +static devclass_t agp_devclass; + +DRIVER_MODULE(agp_apple, hostb, agp_apple_driver, agp_devclass, 0, 0); +MODULE_DEPEND(agp_apple, agp, 1, 1, 1); +MODULE_DEPEND(agp_apple, pci, 1, 1, 1); |