diff options
Diffstat (limited to 'sys/dev/agp/agp_amd64.c')
-rw-r--r-- | sys/dev/agp/agp_amd64.c | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/sys/dev/agp/agp_amd64.c b/sys/dev/agp/agp_amd64.c new file mode 100644 index 0000000..a4372f3 --- /dev/null +++ b/sys/dev/agp/agp_amd64.c @@ -0,0 +1,311 @@ +/*- + * Copyright (c) 2004 Jung-uk Kim + * 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" +#ifdef __i386__ +#include "opt_agp.h" +#endif + +#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 <dev/pci/pcivar.h> +#include <dev/pci/pcireg.h> +#include <pci/agppriv.h> +#include <pci/agpreg.h> + +#include <vm/vm.h> +#include <vm/vm_object.h> +#include <vm/pmap.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +/* XXX */ +extern void pci_cfgregwrite(int, int, int, int, uint32_t, int); +extern uint32_t pci_cfgregread(int, int, int, int, int); + +MALLOC_DECLARE(M_AGP); + +#define AMD64_MAX_MCTRL 8 + +struct agp_amd64_softc { + struct agp_softc agp; + uint32_t initial_aperture; /* aperture size at startup */ + struct agp_gatt *gatt; + int mctrl[AMD64_MAX_MCTRL]; + int n_mctrl; +}; + +static const char* +agp_amd64_match(device_t dev) +{ + if (pci_get_class(dev) != PCIC_BRIDGE + || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) + return NULL; + + if (agp_find_caps(dev) == 0) + return NULL; + + switch (pci_get_devid(dev)) { + case 0x74541022: + return ("AMD 8151 AGP graphics tunnel"); + case 0x10221039: + return ("SiS 755 host to AGP bridge"); + case 0x02041106: + return ("VIA 8380 host to PCI bridge"); + case 0x31881106: + return ("VIA 8385 host to PCI bridge"); + }; + + return NULL; +} + +static int +agp_amd64_probe(device_t dev) +{ + const char *desc; + + if (resource_disabled("agp", device_get_unit(dev))) + return ENXIO; + if ((desc = agp_amd64_match(dev))) { + device_verbose(dev); + device_set_desc(dev, desc); + return 0; + } + + return ENXIO; +} + +static int +agp_amd64_attach(device_t dev) +{ + struct agp_amd64_softc *sc = device_get_softc(dev); + struct agp_gatt *gatt; + int i, n, error; + + for (i = 0, n = 0; i < PCI_SLOTMAX && n < AMD64_MAX_MCTRL; i++) + if (pci_cfgregread(0, i, 3, 0, 4) == 0x11031022) { + sc->mctrl[n] = i; + n++; + } + + if (n == 0) + return ENXIO; + + sc->n_mctrl = n; + + if (bootverbose) + printf("AMD64: %d Misc. Control unit(s) found.\n", sc->n_mctrl); + + if ((error = agp_generic_attach(dev))) + return error; + + sc->initial_aperture = AGP_GET_APERTURE(dev); + + for (;;) { + gatt = agp_alloc_gatt(dev); + if (gatt) + break; + + /* + * Probably contigmalloc failure. Try reducing the + * aperture so that the gatt size reduces. + */ + if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { + agp_generic_detach(dev); + return ENOMEM; + } + } + sc->gatt = gatt; + + /* Install the gatt and enable aperture. */ + for (i = 0; i < sc->n_mctrl; i++) { + pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_ATTBASE, + (uint32_t)(gatt->ag_physical >> 8) & AGP_AMD64_ATTBASE_MASK, + 4); + pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, + (pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) | + AGP_AMD64_APCTRL_GARTEN) & + ~(AGP_AMD64_APCTRL_DISGARTCPU | AGP_AMD64_APCTRL_DISGARTIO), + 4); + } + + agp_flush_cache(); + + return 0; +} + +static int +agp_amd64_detach(device_t dev) +{ + struct agp_amd64_softc *sc = device_get_softc(dev); + int i, error; + + if ((error = agp_generic_detach(dev))) + return error; + + for (i = 0; i < sc->n_mctrl; i++) + pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, + pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) & + ~AGP_AMD64_APCTRL_GARTEN, 4); + + AGP_SET_APERTURE(dev, sc->initial_aperture); + agp_free_gatt(sc->gatt); + + return 0; +} + +static uint32_t agp_amd64_table[] = { + 0x02000000, /* 32 MB */ + 0x04000000, /* 64 MB */ + 0x08000000, /* 128 MB */ + 0x10000000, /* 256 MB */ + 0x20000000, /* 512 MB */ + 0x40000000, /* 1024 MB */ + 0x80000000, /* 2048 MB */ +}; + +#define AGP_AMD64_TABLE_SIZE \ + (sizeof(agp_amd64_table) / sizeof(agp_amd64_table[0])) + +static uint32_t +agp_amd64_get_aperture(device_t dev) +{ + struct agp_amd64_softc *sc = device_get_softc(dev); + uint32_t i; + + i = (pci_cfgregread(0, sc->mctrl[0], 3, AGP_AMD64_APCTRL, 4) & + AGP_AMD64_APCTRL_SIZE_MASK) >> 1; + + if (i >= AGP_AMD64_TABLE_SIZE) + return 0; + + return (agp_amd64_table[i]); +} + +static int +agp_amd64_set_aperture(device_t dev, uint32_t aperture) +{ + struct agp_amd64_softc *sc = device_get_softc(dev); + uint32_t i; + int j; + + for (i = 0; i < AGP_AMD64_TABLE_SIZE; i++) + if (agp_amd64_table[i] == aperture) + break; + if (i == AGP_AMD64_TABLE_SIZE) + return EINVAL; + + for (j = 0; j < sc->n_mctrl; j++) + pci_cfgregwrite(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, + (pci_cfgregread(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 4) & + ~(AGP_AMD64_APCTRL_SIZE_MASK)) | (i << 1), 4); + + return 0; +} + +static int +agp_amd64_bind_page(device_t dev, int offset, vm_offset_t physical) +{ + struct agp_amd64_softc *sc = device_get_softc(dev); + + if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) + return EINVAL; + + sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; + return 0; +} + +static int +agp_amd64_unbind_page(device_t dev, int offset) +{ + struct agp_amd64_softc *sc = device_get_softc(dev); + + if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) + return EINVAL; + + sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; + return 0; +} + +static void +agp_amd64_flush_tlb(device_t dev) +{ + struct agp_amd64_softc *sc = device_get_softc(dev); + int i; + + for (i = 0; i < sc->n_mctrl; i++) + pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, + pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 4) | + AGP_AMD64_CACHECTRL_INVGART, 4); +} + +static device_method_t agp_amd64_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, agp_amd64_probe), + DEVMETHOD(device_attach, agp_amd64_attach), + DEVMETHOD(device_detach, agp_amd64_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_amd64_get_aperture), + DEVMETHOD(agp_set_aperture, agp_amd64_set_aperture), + DEVMETHOD(agp_bind_page, agp_amd64_bind_page), + DEVMETHOD(agp_unbind_page, agp_amd64_unbind_page), + DEVMETHOD(agp_flush_tlb, agp_amd64_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_amd64_driver = { + "agp", + agp_amd64_methods, + sizeof(struct agp_amd64_softc), +}; + +static devclass_t agp_devclass; + +DRIVER_MODULE(agp_amd64, pci, agp_amd64_driver, agp_devclass, 0, 0); +MODULE_DEPEND(agp_amd64, agp, 1, 1, 1); +MODULE_DEPEND(agp_amd64, pci, 1, 1, 1); |