agp_ali.c revision 139431
161452Sdfr/*- 261452Sdfr * Copyright (c) 2000 Doug Rabson 361452Sdfr * All rights reserved. 461452Sdfr * 561452Sdfr * Redistribution and use in source and binary forms, with or without 661452Sdfr * modification, are permitted provided that the following conditions 761452Sdfr * are met: 861452Sdfr * 1. Redistributions of source code must retain the above copyright 961452Sdfr * notice, this list of conditions and the following disclaimer. 1061452Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1161452Sdfr * notice, this list of conditions and the following disclaimer in the 1261452Sdfr * documentation and/or other materials provided with the distribution. 1361452Sdfr * 1461452Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1561452Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1661452Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1761452Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1861452Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1961452Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2061452Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2161452Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2261452Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2361452Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2461452Sdfr * SUCH DAMAGE. 2561452Sdfr */ 2661452Sdfr 27116192Sobrien#include <sys/cdefs.h> 28116192Sobrien__FBSDID("$FreeBSD: head/sys/dev/agp/agp_ali.c 139431 2004-12-30 07:18:58Z anholt $"); 29116192Sobrien 3061452Sdfr#include "opt_bus.h" 3161452Sdfr 3261452Sdfr#include <sys/param.h> 3361452Sdfr#include <sys/systm.h> 3461452Sdfr#include <sys/malloc.h> 3561452Sdfr#include <sys/kernel.h> 36129878Sphk#include <sys/module.h> 3761452Sdfr#include <sys/bus.h> 3861452Sdfr#include <sys/lock.h> 3976827Salfred#include <sys/mutex.h> 4079339Sjhb#include <sys/proc.h> 4161452Sdfr 42119288Simp#include <dev/pci/pcivar.h> 43119288Simp#include <dev/pci/pcireg.h> 4461452Sdfr#include <pci/agppriv.h> 4561452Sdfr#include <pci/agpreg.h> 4661452Sdfr 4761452Sdfr#include <vm/vm.h> 4861452Sdfr#include <vm/vm_object.h> 4961452Sdfr#include <vm/pmap.h> 5061452Sdfr 5161452Sdfrstruct agp_ali_softc { 5261452Sdfr struct agp_softc agp; 5361452Sdfr u_int32_t initial_aperture; /* aperture size at startup */ 5461452Sdfr struct agp_gatt *gatt; 5561452Sdfr}; 5661452Sdfr 5761452Sdfrstatic const char* 5861452Sdfragp_ali_match(device_t dev) 5961452Sdfr{ 6061452Sdfr if (pci_get_class(dev) != PCIC_BRIDGE 6161452Sdfr || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 6261452Sdfr return NULL; 6361452Sdfr 6461452Sdfr if (agp_find_caps(dev) == 0) 6561452Sdfr return NULL; 6661452Sdfr 6761452Sdfr switch (pci_get_devid(dev)) { 6861452Sdfr case 0x154110b9: 6961452Sdfr return ("Ali M1541 host to AGP bridge"); 70139431Sanholt case 0x162110b9: 71139431Sanholt return ("Ali M1621 host to AGP bridge"); 7261452Sdfr }; 7361452Sdfr 7461452Sdfr return NULL; 7561452Sdfr} 7661452Sdfr 7761452Sdfrstatic int 7861452Sdfragp_ali_probe(device_t dev) 7961452Sdfr{ 8061452Sdfr const char *desc; 8161452Sdfr 82127815Snjl if (resource_disabled("agp", device_get_unit(dev))) 83127815Snjl return (ENXIO); 8461452Sdfr desc = agp_ali_match(dev); 8561452Sdfr if (desc) { 8661452Sdfr device_verbose(dev); 8761452Sdfr device_set_desc(dev, desc); 8861452Sdfr return 0; 8961452Sdfr } 9061452Sdfr 9161452Sdfr return ENXIO; 9261452Sdfr} 9361452Sdfr 9461452Sdfrstatic int 9561452Sdfragp_ali_attach(device_t dev) 9661452Sdfr{ 9761452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 9861452Sdfr struct agp_gatt *gatt; 9961452Sdfr int error; 100134098Sanholt u_int32_t attbase; 10161452Sdfr 10261452Sdfr error = agp_generic_attach(dev); 10361452Sdfr if (error) 10461452Sdfr return error; 10561452Sdfr 10661452Sdfr sc->initial_aperture = AGP_GET_APERTURE(dev); 107122513Sanholt if (sc->initial_aperture == 0) { 108122513Sanholt device_printf(dev, "bad initial aperture size, disabling\n"); 109122513Sanholt return ENXIO; 110122513Sanholt } 11161452Sdfr 11261452Sdfr for (;;) { 11361452Sdfr gatt = agp_alloc_gatt(dev); 11461452Sdfr if (gatt) 11561452Sdfr break; 11661452Sdfr 11761452Sdfr /* 11861452Sdfr * Probably contigmalloc failure. Try reducing the 11961452Sdfr * aperture so that the gatt size reduces. 12061452Sdfr */ 12161452Sdfr if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 12261452Sdfr agp_generic_detach(dev); 12361452Sdfr return ENOMEM; 12461452Sdfr } 12561452Sdfr } 12661452Sdfr sc->gatt = gatt; 12761452Sdfr 12861452Sdfr /* Install the gatt. */ 129134098Sanholt attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4); 130134098Sanholt pci_write_config(dev, AGP_ALI_ATTBASE, gatt->ag_physical | 131134099Sanholt (attbase & 0xfff), 4); 13261452Sdfr 13361452Sdfr /* Enable the TLB. */ 13461452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1); 13561452Sdfr 13661452Sdfr return 0; 13761452Sdfr} 13861452Sdfr 13961452Sdfrstatic int 14061452Sdfragp_ali_detach(device_t dev) 14161452Sdfr{ 14261452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 14361452Sdfr int error; 144134098Sanholt u_int32_t attbase; 14561452Sdfr 14661452Sdfr error = agp_generic_detach(dev); 14761452Sdfr if (error) 14861452Sdfr return error; 14961452Sdfr 15061452Sdfr /* Disable the TLB.. */ 15161452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1); 15261452Sdfr 15361452Sdfr /* Put the aperture back the way it started. */ 15461452Sdfr AGP_SET_APERTURE(dev, sc->initial_aperture); 155134098Sanholt attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4); 156134099Sanholt pci_write_config(dev, AGP_ALI_ATTBASE, attbase & 0xfff, 4); 15761452Sdfr 15861452Sdfr agp_free_gatt(sc->gatt); 15961452Sdfr return 0; 16061452Sdfr} 16161452Sdfr 16261452Sdfr#define M 1024*1024 16361452Sdfr 16461452Sdfrstatic u_int32_t agp_ali_table[] = { 16561452Sdfr 0, /* 0 - invalid */ 16661452Sdfr 1, /* 1 - invalid */ 16761452Sdfr 2, /* 2 - invalid */ 16861452Sdfr 4*M, /* 3 - invalid */ 16961452Sdfr 8*M, /* 4 - invalid */ 17061452Sdfr 0, /* 5 - invalid */ 17161452Sdfr 16*M, /* 6 - invalid */ 17261452Sdfr 32*M, /* 7 - invalid */ 17361452Sdfr 64*M, /* 8 - invalid */ 17461452Sdfr 128*M, /* 9 - invalid */ 17561452Sdfr 256*M, /* 10 - invalid */ 17661452Sdfr}; 17761452Sdfr#define agp_ali_table_size (sizeof(agp_ali_table) / sizeof(agp_ali_table[0])) 17861452Sdfr 17961452Sdfrstatic u_int32_t 18061452Sdfragp_ali_get_aperture(device_t dev) 18161452Sdfr{ 18261452Sdfr /* 18361452Sdfr * The aperture size is derived from the low bits of attbase. 18461452Sdfr * I'm not sure this is correct.. 18561452Sdfr */ 186134099Sanholt int i = pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xf; 18761452Sdfr if (i >= agp_ali_table_size) 18861452Sdfr return 0; 18961452Sdfr return agp_ali_table[i]; 19061452Sdfr} 19161452Sdfr 19261452Sdfrstatic int 19361452Sdfragp_ali_set_aperture(device_t dev, u_int32_t aperture) 19461452Sdfr{ 19561452Sdfr int i; 196134098Sanholt u_int32_t attbase; 19761452Sdfr 19861452Sdfr for (i = 0; i < agp_ali_table_size; i++) 19961452Sdfr if (agp_ali_table[i] == aperture) 20061452Sdfr break; 20161452Sdfr if (i == agp_ali_table_size) 20261452Sdfr return EINVAL; 20361452Sdfr 204134098Sanholt attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4); 205134099Sanholt pci_write_config(dev, AGP_ALI_ATTBASE, (attbase & ~0xf) | i, 4); 20661452Sdfr return 0; 20761452Sdfr} 20861452Sdfr 20961452Sdfrstatic int 21061452Sdfragp_ali_bind_page(device_t dev, int offset, vm_offset_t physical) 21161452Sdfr{ 21261452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 21361452Sdfr 21461452Sdfr if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 21561452Sdfr return EINVAL; 21661452Sdfr 21761452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 21861452Sdfr return 0; 21961452Sdfr} 22061452Sdfr 22161452Sdfrstatic int 22261452Sdfragp_ali_unbind_page(device_t dev, int offset) 22361452Sdfr{ 22461452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 22561452Sdfr 22661452Sdfr if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 22761452Sdfr return EINVAL; 22861452Sdfr 22961452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 23061452Sdfr return 0; 23161452Sdfr} 23261452Sdfr 23361452Sdfrstatic void 23461452Sdfragp_ali_flush_tlb(device_t dev) 23561452Sdfr{ 23661452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1); 23761452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1); 23861452Sdfr} 23961452Sdfr 24061452Sdfrstatic device_method_t agp_ali_methods[] = { 24161452Sdfr /* Device interface */ 24261452Sdfr DEVMETHOD(device_probe, agp_ali_probe), 24361452Sdfr DEVMETHOD(device_attach, agp_ali_attach), 24461452Sdfr DEVMETHOD(device_detach, agp_ali_detach), 24561452Sdfr DEVMETHOD(device_shutdown, bus_generic_shutdown), 24661452Sdfr DEVMETHOD(device_suspend, bus_generic_suspend), 24761452Sdfr DEVMETHOD(device_resume, bus_generic_resume), 24861452Sdfr 24961452Sdfr /* AGP interface */ 25061452Sdfr DEVMETHOD(agp_get_aperture, agp_ali_get_aperture), 25161452Sdfr DEVMETHOD(agp_set_aperture, agp_ali_set_aperture), 25261452Sdfr DEVMETHOD(agp_bind_page, agp_ali_bind_page), 25361452Sdfr DEVMETHOD(agp_unbind_page, agp_ali_unbind_page), 25461452Sdfr DEVMETHOD(agp_flush_tlb, agp_ali_flush_tlb), 25561452Sdfr DEVMETHOD(agp_enable, agp_generic_enable), 25661452Sdfr DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 25761452Sdfr DEVMETHOD(agp_free_memory, agp_generic_free_memory), 25861452Sdfr DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 25961452Sdfr DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 26061452Sdfr 26161452Sdfr { 0, 0 } 26261452Sdfr}; 26361452Sdfr 26461452Sdfrstatic driver_t agp_ali_driver = { 26561452Sdfr "agp", 26661452Sdfr agp_ali_methods, 26761452Sdfr sizeof(struct agp_ali_softc), 26861452Sdfr}; 26961452Sdfr 27061452Sdfrstatic devclass_t agp_devclass; 27161452Sdfr 27261452SdfrDRIVER_MODULE(agp_ali, pci, agp_ali_driver, agp_devclass, 0, 0); 273113506SmdoddMODULE_DEPEND(agp_ali, agp, 1, 1, 1); 274113506SmdoddMODULE_DEPEND(agp_ali, pci, 1, 1, 1); 275