Current Path : /sys/dev/agp/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/agp/agp_sis.c |
/*- * 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: release/9.1.0/sys/dev/agp/agp_sis.c 194017 2009-06-11 17:06:07Z avg $"); #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/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> struct agp_sis_softc { struct agp_softc agp; u_int32_t initial_aperture; /* aperture size at startup */ struct agp_gatt *gatt; }; static const char* agp_sis_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 0x00011039: return ("SiS 5591 host to AGP bridge"); case 0x05301039: return ("SiS 530 host to AGP bridge"); case 0x05401039: return ("SiS 540 host to AGP bridge"); case 0x05501039: return ("SiS 550 host to AGP bridge"); case 0x06201039: return ("SiS 620 host to AGP bridge"); case 0x06301039: return ("SiS 630 host to AGP bridge"); case 0x06451039: return ("SiS 645 host to AGP bridge"); case 0x06461039: return ("SiS 645DX host to AGP bridge"); case 0x06481039: return ("SiS 648 host to AGP bridge"); case 0x06501039: return ("SiS 650 host to AGP bridge"); case 0x06511039: return ("SiS 651 host to AGP bridge"); case 0x06551039: return ("SiS 655 host to AGP bridge"); case 0x06611039: return ("SiS 661 host to AGP bridge"); case 0x07301039: return ("SiS 730 host to AGP bridge"); case 0x07351039: return ("SiS 735 host to AGP bridge"); case 0x07401039: return ("SiS 740 host to AGP bridge"); case 0x07411039: return ("SiS 741 host to AGP bridge"); case 0x07451039: return ("SiS 745 host to AGP bridge"); case 0x07461039: return ("SiS 746 host to AGP bridge"); }; return NULL; } static int agp_sis_probe(device_t dev) { const char *desc; if (resource_disabled("agp", device_get_unit(dev))) return (ENXIO); desc = agp_sis_match(dev); if (desc) { device_set_desc(dev, desc); return BUS_PROBE_DEFAULT; } return ENXIO; } static int agp_sis_attach(device_t dev) { struct agp_sis_softc *sc = device_get_softc(dev); struct agp_gatt *gatt; int error; error = agp_generic_attach(dev); if (error) 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. */ pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4); /* Enable the aperture. */ pci_write_config(dev, AGP_SIS_WINCTRL, pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1); /* * Enable the TLB and make it automatically invalidate entries * when the GATT is written. */ pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1); return 0; } static int agp_sis_detach(device_t dev) { struct agp_sis_softc *sc = device_get_softc(dev); agp_free_cdev(dev); /* Disable the aperture.. */ pci_write_config(dev, AGP_SIS_WINCTRL, pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1); /* and the TLB. */ pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1); /* Put the aperture back the way it started. */ AGP_SET_APERTURE(dev, sc->initial_aperture); agp_free_gatt(sc->gatt); agp_free_res(dev); return 0; } static u_int32_t agp_sis_get_aperture(device_t dev) { int gws; /* * The aperture size is equal to 4M<<gws. */ gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4; return (4*1024*1024) << gws; } static int agp_sis_set_aperture(device_t dev, u_int32_t aperture) { int gws; /* * Check for a power of two and make sure its within the * programmable range. */ if (aperture & (aperture - 1) || aperture < 4*1024*1024 || aperture > 256*1024*1024) return EINVAL; gws = ffs(aperture / 4*1024*1024) - 1; pci_write_config(dev, AGP_SIS_WINCTRL, ((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70) | gws << 4), 1); return 0; } static int agp_sis_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical) { struct agp_sis_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; return 0; } static int agp_sis_unbind_page(device_t dev, vm_offset_t offset) { struct agp_sis_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; return 0; } static void agp_sis_flush_tlb(device_t dev) { pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1); } static device_method_t agp_sis_methods[] = { /* Device interface */ DEVMETHOD(device_probe, agp_sis_probe), DEVMETHOD(device_attach, agp_sis_attach), DEVMETHOD(device_detach, agp_sis_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_sis_get_aperture), DEVMETHOD(agp_set_aperture, agp_sis_set_aperture), DEVMETHOD(agp_bind_page, agp_sis_bind_page), DEVMETHOD(agp_unbind_page, agp_sis_unbind_page), DEVMETHOD(agp_flush_tlb, agp_sis_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_sis_driver = { "agp", agp_sis_methods, sizeof(struct agp_sis_softc), }; static devclass_t agp_devclass; DRIVER_MODULE(agp_sis, hostb, agp_sis_driver, agp_devclass, 0, 0); MODULE_DEPEND(agp_sis, agp, 1, 1, 1); MODULE_DEPEND(agp_sis, pci, 1, 1, 1);