diff options
Diffstat (limited to 'sys/pci/agp_intel.c')
| -rw-r--r-- | sys/pci/agp_intel.c | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/sys/pci/agp_intel.c b/sys/pci/agp_intel.c deleted file mode 100644 index 60e0e6f..0000000 --- a/sys/pci/agp_intel.c +++ /dev/null @@ -1,439 +0,0 @@ -/*- - * Copyright (c) 2000 Doug Rabson - * 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 <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> - -#define MAX_APSIZE 0x3f /* 256 MB */ - -struct agp_intel_softc { - struct agp_softc agp; - u_int32_t initial_aperture; /* aperture size at startup */ - struct agp_gatt *gatt; - u_int aperture_mask; - u_int32_t current_aperture; /* current aperture size */ -}; - -static const char* -agp_intel_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)) { - /* Intel -- vendor 0x8086 */ - case 0x71808086: - return ("Intel 82443LX (440 LX) host to PCI bridge"); - case 0x71908086: - return ("Intel 82443BX (440 BX) host to PCI bridge"); - case 0x71a08086: - return ("Intel 82443GX host to PCI bridge"); - case 0x71a18086: - return ("Intel 82443GX host to AGP bridge"); - case 0x11308086: - return ("Intel 82815 (i815 GMCH) host to PCI bridge"); - case 0x25008086: - case 0x25018086: - return ("Intel 82820 host to AGP bridge"); - case 0x35758086: - return ("Intel 82830 host to AGP bridge"); - case 0x1a218086: - return ("Intel 82840 host to AGP bridge"); - case 0x1a308086: - return ("Intel 82845 host to AGP bridge"); - case 0x25308086: - return ("Intel 82850 host to AGP bridge"); - case 0x33408086: - return ("Intel 82855 host to AGP bridge"); - case 0x25318086: - return ("Intel 82860 host to AGP bridge"); - case 0x25708086: - return ("Intel 82865 host to AGP bridge"); - case 0x255d8086: - return ("Intel E7205 host to AGP bridge"); - case 0x25508086: - return ("Intel E7505 host to AGP bridge"); - case 0x25788086: - return ("Intel 82875P host to AGP bridge"); - case 0x25608086: - return ("Intel 82845G host to AGP bridge"); - case 0x35808086: - return ("Intel 82855GM host to AGP bridge"); - }; - - return (NULL); -} - -static int -agp_intel_probe(device_t dev) -{ - const char *desc; - - if (resource_disabled("agp", device_get_unit(dev))) - return (ENXIO); - desc = agp_intel_match(dev); - if (desc) { - device_set_desc(dev, desc); - return (BUS_PROBE_DEFAULT); - } - - return (ENXIO); -} - -static void -agp_intel_commit_gatt(device_t dev) -{ - struct agp_intel_softc *sc; - u_int32_t type; - u_int32_t value; - - sc = device_get_softc(dev); - type = pci_get_devid(dev); - - /* Install the gatt. */ - pci_write_config(dev, AGP_INTEL_ATTBASE, sc->gatt->ag_physical, 4); - - /* Enable the GLTB and setup the control register. */ - switch (type) { - case 0x71908086: /* 440LX/EX */ - pci_write_config(dev, AGP_INTEL_AGPCTRL, 0x2080, 4); - break; - case 0x71808086: /* 440BX */ - /* - * XXX: Should be 0xa080? Bit 9 is undefined, and - * bit 13 being on and bit 15 being clear is illegal. - */ - pci_write_config(dev, AGP_INTEL_AGPCTRL, 0x2280, 4); - break; - default: - value = pci_read_config(dev, AGP_INTEL_AGPCTRL, 4); - pci_write_config(dev, AGP_INTEL_AGPCTRL, value | 0x80, 4); - } - - /* Enable aperture accesses. */ - switch (type) { - case 0x25008086: /* i820 */ - case 0x25018086: /* i820 */ - pci_write_config(dev, AGP_INTEL_I820_RDCR, - (pci_read_config(dev, AGP_INTEL_I820_RDCR, 1) - | (1 << 1)), 1); - break; - case 0x1a308086: /* i845 */ - case 0x25608086: /* i845G */ - case 0x33408086: /* i855 */ - case 0x35808086: /* i855GM */ - case 0x25708086: /* i865 */ - case 0x25788086: /* i875P */ - pci_write_config(dev, AGP_INTEL_I845_AGPM, - (pci_read_config(dev, AGP_INTEL_I845_AGPM, 1) - | (1 << 1)), 1); - break; - case 0x1a218086: /* i840 */ - case 0x25308086: /* i850 */ - case 0x25318086: /* i860 */ - case 0x255d8086: /* E7205 */ - case 0x25508086: /* E7505 */ - pci_write_config(dev, AGP_INTEL_MCHCFG, - (pci_read_config(dev, AGP_INTEL_MCHCFG, 2) - | (1 << 9)), 2); - break; - default: /* Intel Generic (maybe) */ - pci_write_config(dev, AGP_INTEL_NBXCFG, - (pci_read_config(dev, AGP_INTEL_NBXCFG, 4) - & ~(1 << 10)) | (1 << 9), 4); - } - - /* Clear errors. */ - switch (type) { - case 0x1a218086: /* i840 */ - pci_write_config(dev, AGP_INTEL_I8XX_ERRSTS, 0xc000, 2); - break; - case 0x25008086: /* i820 */ - case 0x25018086: /* i820 */ - case 0x1a308086: /* i845 */ - case 0x25608086: /* i845G */ - case 0x25308086: /* i850 */ - case 0x33408086: /* i855 */ - case 0x25318086: /* i860 */ - case 0x25708086: /* i865 */ - case 0x25788086: /* i875P */ - case 0x255d8086: /* E7205 */ - case 0x25508086: /* E7505 */ - pci_write_config(dev, AGP_INTEL_I8XX_ERRSTS, 0x00ff, 2); - break; - default: /* Intel Generic (maybe) */ - pci_write_config(dev, AGP_INTEL_ERRSTS + 1, 7, 1); - } -} - -static int -agp_intel_attach(device_t dev) -{ - struct agp_intel_softc *sc; - struct agp_gatt *gatt; - u_int32_t value; - int error; - - sc = device_get_softc(dev); - - error = agp_generic_attach(dev); - if (error) - return (error); - - /* Determine maximum supported aperture size. */ - value = pci_read_config(dev, AGP_INTEL_APSIZE, 1); - pci_write_config(dev, AGP_INTEL_APSIZE, MAX_APSIZE, 1); - sc->aperture_mask = pci_read_config(dev, AGP_INTEL_APSIZE, 1) & - MAX_APSIZE; - pci_write_config(dev, AGP_INTEL_APSIZE, value, 1); - sc->current_aperture = 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; - - agp_intel_commit_gatt(dev); - - return (0); -} - -static int -agp_intel_detach(device_t dev) -{ - struct agp_intel_softc *sc; - u_int32_t reg; - - sc = device_get_softc(dev); - - agp_free_cdev(dev); - - /* Disable aperture accesses. */ - switch (pci_get_devid(dev)) { - case 0x25008086: /* i820 */ - case 0x25018086: /* i820 */ - reg = pci_read_config(dev, AGP_INTEL_I820_RDCR, 1) & ~(1 << 1); - printf("%s: set RDCR to %02x\n", __func__, reg & 0xff); - pci_write_config(dev, AGP_INTEL_I820_RDCR, reg, 1); - break; - case 0x1a308086: /* i845 */ - case 0x25608086: /* i845G */ - case 0x33408086: /* i855 */ - case 0x35808086: /* i855GM */ - case 0x25708086: /* i865 */ - case 0x25788086: /* i875P */ - reg = pci_read_config(dev, AGP_INTEL_I845_AGPM, 1) & ~(1 << 1); - printf("%s: set AGPM to %02x\n", __func__, reg & 0xff); - pci_write_config(dev, AGP_INTEL_I845_AGPM, reg, 1); - break; - case 0x1a218086: /* i840 */ - case 0x25308086: /* i850 */ - case 0x25318086: /* i860 */ - case 0x255d8086: /* E7205 */ - case 0x25508086: /* E7505 */ - reg = pci_read_config(dev, AGP_INTEL_MCHCFG, 2) & ~(1 << 9); - printf("%s: set MCHCFG to %x04\n", __func__, reg & 0xffff); - pci_write_config(dev, AGP_INTEL_MCHCFG, reg, 2); - break; - default: /* Intel Generic (maybe) */ - reg = pci_read_config(dev, AGP_INTEL_NBXCFG, 4) & ~(1 << 9); - printf("%s: set NBXCFG to %08x\n", __func__, reg); - pci_write_config(dev, AGP_INTEL_NBXCFG, reg, 4); - } - pci_write_config(dev, AGP_INTEL_ATTBASE, 0, 4); - AGP_SET_APERTURE(dev, sc->initial_aperture); - agp_free_gatt(sc->gatt); - agp_free_res(dev); - - return (0); -} - -static int -agp_intel_resume(device_t dev) -{ - struct agp_intel_softc *sc; - sc = device_get_softc(dev); - - AGP_SET_APERTURE(dev, sc->current_aperture); - agp_intel_commit_gatt(dev); - return (bus_generic_resume(dev)); -} - -static u_int32_t -agp_intel_get_aperture(device_t dev) -{ - struct agp_intel_softc *sc; - u_int32_t apsize; - - sc = device_get_softc(dev); - - apsize = pci_read_config(dev, AGP_INTEL_APSIZE, 1) & sc->aperture_mask; - - /* - * The size is determined by the number of low bits of - * register APBASE which are forced to zero. The low 22 bits - * are always forced to zero and each zero bit in the apsize - * field just read forces the corresponding bit in the 27:22 - * to be zero. We calculate the aperture size accordingly. - */ - return ((((apsize ^ sc->aperture_mask) << 22) | ((1 << 22) - 1)) + 1); -} - -static int -agp_intel_set_aperture(device_t dev, u_int32_t aperture) -{ - struct agp_intel_softc *sc; - u_int32_t apsize; - - sc = device_get_softc(dev); - - /* - * Reverse the magic from get_aperture. - */ - apsize = ((aperture - 1) >> 22) ^ sc->aperture_mask; - - /* - * Double check for sanity. - */ - if ((((apsize ^ sc->aperture_mask) << 22) | ((1 << 22) - 1)) + 1 != aperture) - return (EINVAL); - - sc->current_aperture = apsize; - - pci_write_config(dev, AGP_INTEL_APSIZE, apsize, 1); - - return (0); -} - -static int -agp_intel_bind_page(device_t dev, int offset, vm_offset_t physical) -{ - struct agp_intel_softc *sc; - - 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 | 0x17; - return (0); -} - -static int -agp_intel_unbind_page(device_t dev, int offset) -{ - struct agp_intel_softc *sc; - - 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_intel_flush_tlb(device_t dev) -{ - u_int32_t val; - - val = pci_read_config(dev, AGP_INTEL_AGPCTRL, 4); - pci_write_config(dev, AGP_INTEL_AGPCTRL, val & ~(1 << 7), 4); - pci_write_config(dev, AGP_INTEL_AGPCTRL, val, 4); -} - -static device_method_t agp_intel_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, agp_intel_probe), - DEVMETHOD(device_attach, agp_intel_attach), - DEVMETHOD(device_detach, agp_intel_detach), - DEVMETHOD(device_shutdown, bus_generic_shutdown), - DEVMETHOD(device_suspend, bus_generic_suspend), - DEVMETHOD(device_resume, agp_intel_resume), - - /* AGP interface */ - DEVMETHOD(agp_get_aperture, agp_intel_get_aperture), - DEVMETHOD(agp_set_aperture, agp_intel_set_aperture), - DEVMETHOD(agp_bind_page, agp_intel_bind_page), - DEVMETHOD(agp_unbind_page, agp_intel_unbind_page), - DEVMETHOD(agp_flush_tlb, agp_intel_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_intel_driver = { - "agp", - agp_intel_methods, - sizeof(struct agp_intel_softc), -}; - -static devclass_t agp_devclass; - -DRIVER_MODULE(agp_intel, hostb, agp_intel_driver, agp_devclass, 0, 0); -MODULE_DEPEND(agp_intel, agp, 1, 1, 1); -MODULE_DEPEND(agp_intel, pci, 1, 1, 1); |
