1214603Snwhitehorn/*- 2214603Snwhitehorn * Copyright (c) 2010 Nathan Whitehorn 3214603Snwhitehorn * All rights reserved. 4214603Snwhitehorn * 5214603Snwhitehorn * Redistribution and use in source and binary forms, with or without 6214603Snwhitehorn * modification, are permitted provided that the following conditions 7214603Snwhitehorn * are met: 8214603Snwhitehorn * 1. Redistributions of source code must retain the above copyright 9214603Snwhitehorn * notice, this list of conditions and the following disclaimer. 10214603Snwhitehorn * 2. Redistributions in binary form must reproduce the above copyright 11214603Snwhitehorn * notice, this list of conditions and the following disclaimer in the 12214603Snwhitehorn * documentation and/or other materials provided with the distribution. 13214603Snwhitehorn * 14214603Snwhitehorn * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15214603Snwhitehorn * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16214603Snwhitehorn * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17214603Snwhitehorn * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18214603Snwhitehorn * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19214603Snwhitehorn * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20214603Snwhitehorn * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21214603Snwhitehorn * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22214603Snwhitehorn * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23214603Snwhitehorn * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24214603Snwhitehorn * SUCH DAMAGE. 25214603Snwhitehorn */ 26214603Snwhitehorn 27214603Snwhitehorn#include <sys/cdefs.h> 28214603Snwhitehorn__FBSDID("$FreeBSD$"); 29214603Snwhitehorn 30214603Snwhitehorn#include <sys/param.h> 31214603Snwhitehorn#include <sys/systm.h> 32214603Snwhitehorn#include <sys/malloc.h> 33214603Snwhitehorn#include <sys/kernel.h> 34214603Snwhitehorn#include <sys/module.h> 35214603Snwhitehorn#include <sys/bus.h> 36214603Snwhitehorn#include <sys/lock.h> 37214603Snwhitehorn#include <sys/mutex.h> 38214603Snwhitehorn#include <sys/proc.h> 39214603Snwhitehorn 40214603Snwhitehorn#include <machine/resource.h> 41214603Snwhitehorn 42214603Snwhitehorn#include <dev/agp/agppriv.h> 43214603Snwhitehorn#include <dev/agp/agpreg.h> 44214603Snwhitehorn#include <dev/pci/pcivar.h> 45214603Snwhitehorn#include <dev/pci/pcireg.h> 46214603Snwhitehorn 47214603Snwhitehorn#include <vm/vm.h> 48214603Snwhitehorn#include <vm/vm_object.h> 49214603Snwhitehorn#include <vm/pmap.h> 50214603Snwhitehorn 51214603Snwhitehorn#define UNIN_AGP_GART_BASE 0x8c 52214603Snwhitehorn#define UNIN_AGP_BASE_ADDR 0x90 53214603Snwhitehorn#define UNIN_AGP_GART_CONTROL 0x94 54214603Snwhitehorn 55214603Snwhitehorn#define UNIN_AGP_GART_INVAL 0x00000001 56214603Snwhitehorn#define UNIN_AGP_GART_ENABLE 0x00000100 57214603Snwhitehorn#define UNIN_AGP_GART_2XRESET 0x00010000 58214603Snwhitehorn#define UNIN_AGP_U3_GART_PERFRD 0x00080000 59214603Snwhitehorn 60214603Snwhitehornstruct agp_apple_softc { 61214603Snwhitehorn struct agp_softc agp; 62214603Snwhitehorn uint32_t aperture; 63214603Snwhitehorn struct agp_gatt *gatt; 64214603Snwhitehorn int u3; 65214603Snwhitehorn int needs_2x_reset; 66214603Snwhitehorn}; 67214603Snwhitehorn 68214603Snwhitehornstatic int 69214603Snwhitehornagp_apple_probe(device_t dev) 70214603Snwhitehorn{ 71214603Snwhitehorn 72241885Seadler if (resource_disabled("agp", device_get_unit(dev))) 73241885Seadler return (ENXIO); 74241885Seadler 75214603Snwhitehorn if (pci_get_class(dev) != PCIC_BRIDGE 76214603Snwhitehorn || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 77214603Snwhitehorn return (ENXIO); 78214603Snwhitehorn 79214603Snwhitehorn if (agp_find_caps(dev) == 0) 80214603Snwhitehorn return (ENXIO); 81214603Snwhitehorn 82214603Snwhitehorn if (pci_get_class(dev) != PCIC_BRIDGE 83214603Snwhitehorn || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 84214603Snwhitehorn return (ENXIO); 85214603Snwhitehorn 86214603Snwhitehorn switch (pci_get_devid(dev)) { 87214603Snwhitehorn case 0x0020106b: 88214603Snwhitehorn case 0x0027106b: 89214603Snwhitehorn device_set_desc(dev, "Apple UniNorth AGP Bridge"); 90214603Snwhitehorn return (BUS_PROBE_DEFAULT); 91214603Snwhitehorn case 0x002d106b: 92214603Snwhitehorn device_set_desc(dev, "Apple UniNorth 1.5 AGP Bridge"); 93214603Snwhitehorn return (BUS_PROBE_DEFAULT); 94214603Snwhitehorn case 0x0034106b: 95214603Snwhitehorn device_set_desc(dev, "Apple UniNorth 2 AGP Bridge"); 96214603Snwhitehorn return (BUS_PROBE_DEFAULT); 97214603Snwhitehorn case 0x004b106b: 98214603Snwhitehorn case 0x0058106b: 99214603Snwhitehorn case 0x0059106b: 100214603Snwhitehorn device_set_desc(dev, "Apple U3 AGP Bridge"); 101214603Snwhitehorn return (BUS_PROBE_DEFAULT); 102214603Snwhitehorn case 0x0066106b: 103214603Snwhitehorn device_set_desc(dev, "Apple Intrepid AGP Bridge"); 104214603Snwhitehorn return (BUS_PROBE_DEFAULT); 105214603Snwhitehorn } 106214603Snwhitehorn 107214603Snwhitehorn return (ENXIO); 108214603Snwhitehorn} 109214603Snwhitehorn 110214603Snwhitehornstatic int 111214603Snwhitehornagp_apple_attach(device_t dev) 112214603Snwhitehorn{ 113214603Snwhitehorn struct agp_apple_softc *sc = device_get_softc(dev); 114214603Snwhitehorn int error; 115214603Snwhitehorn 116214603Snwhitehorn /* Record quirks */ 117214603Snwhitehorn sc->needs_2x_reset = 0; 118214603Snwhitehorn sc->u3 = 0; 119214603Snwhitehorn switch (pci_get_devid(dev)) { 120214603Snwhitehorn case 0x0020106b: 121214603Snwhitehorn case 0x0027106b: 122214603Snwhitehorn sc->needs_2x_reset = 1; 123214603Snwhitehorn break; 124214603Snwhitehorn case 0x004b106b: 125214603Snwhitehorn case 0x0058106b: 126214603Snwhitehorn case 0x0059106b: 127214603Snwhitehorn sc->u3 = 1; 128214603Snwhitehorn break; 129214603Snwhitehorn } 130214603Snwhitehorn 131214603Snwhitehorn /* Set the aperture bus address base (must be 0) */ 132214603Snwhitehorn pci_write_config(dev, UNIN_AGP_BASE_ADDR, 0, 4); 133214603Snwhitehorn agp_set_aperture_resource(dev, -1); 134214603Snwhitehorn 135214603Snwhitehorn error = agp_generic_attach(dev); 136214603Snwhitehorn if (error) 137214603Snwhitehorn return (error); 138214603Snwhitehorn 139214603Snwhitehorn sc->aperture = 256*1024*1024; 140214603Snwhitehorn 141214603Snwhitehorn for (sc->aperture = 256*1024*1024; sc->aperture >= 4*1024*1024; 142214603Snwhitehorn sc->aperture /= 2) { 143214603Snwhitehorn sc->gatt = agp_alloc_gatt(dev); 144214603Snwhitehorn if (sc->gatt) 145214603Snwhitehorn break; 146214603Snwhitehorn } 147214603Snwhitehorn if (sc->aperture < 4*1024*1024) { 148214603Snwhitehorn agp_generic_detach(dev); 149214603Snwhitehorn return ENOMEM; 150214603Snwhitehorn } 151214603Snwhitehorn 152214603Snwhitehorn /* Install the gatt. */ 153214603Snwhitehorn AGP_SET_APERTURE(dev, sc->aperture); 154214603Snwhitehorn 155214603Snwhitehorn /* XXX: U3 scratch page? */ 156214603Snwhitehorn 157214603Snwhitehorn /* Enable the aperture and TLB. */ 158214603Snwhitehorn AGP_FLUSH_TLB(dev); 159214603Snwhitehorn 160214603Snwhitehorn return (0); 161214603Snwhitehorn} 162214603Snwhitehorn 163214603Snwhitehornstatic int 164214603Snwhitehornagp_apple_detach(device_t dev) 165214603Snwhitehorn{ 166214603Snwhitehorn struct agp_apple_softc *sc = device_get_softc(dev); 167214603Snwhitehorn 168214603Snwhitehorn agp_free_cdev(dev); 169214603Snwhitehorn 170214603Snwhitehorn /* Disable the aperture and TLB */ 171214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, UNIN_AGP_GART_INVAL, 4); 172214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, 0, 4); 173214603Snwhitehorn 174214603Snwhitehorn if (sc->needs_2x_reset) { 175214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, 176214603Snwhitehorn UNIN_AGP_GART_2XRESET, 4); 177214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, 0, 4); 178214603Snwhitehorn } 179214603Snwhitehorn 180214603Snwhitehorn AGP_SET_APERTURE(dev, 0); 181214603Snwhitehorn 182214603Snwhitehorn agp_free_gatt(sc->gatt); 183214603Snwhitehorn agp_free_res(dev); 184214603Snwhitehorn return 0; 185214603Snwhitehorn} 186214603Snwhitehorn 187214603Snwhitehornstatic uint32_t 188214603Snwhitehornagp_apple_get_aperture(device_t dev) 189214603Snwhitehorn{ 190214603Snwhitehorn struct agp_apple_softc *sc = device_get_softc(dev); 191214603Snwhitehorn 192214603Snwhitehorn return (sc->aperture); 193214603Snwhitehorn} 194214603Snwhitehorn 195214603Snwhitehornstatic int 196214603Snwhitehornagp_apple_set_aperture(device_t dev, uint32_t aperture) 197214603Snwhitehorn{ 198214603Snwhitehorn struct agp_apple_softc *sc = device_get_softc(dev); 199214603Snwhitehorn 200214603Snwhitehorn /* 201214603Snwhitehorn * Check for a multiple of 4 MB and make sure it is within the 202214603Snwhitehorn * programmable range. 203214603Snwhitehorn */ 204214603Snwhitehorn if (aperture % (4*1024*1024) 205214603Snwhitehorn || aperture < 4*1024*1024 206214603Snwhitehorn || aperture > ((sc->u3) ? 512 : 256)*1024*1024) 207214603Snwhitehorn return EINVAL; 208214603Snwhitehorn 209214603Snwhitehorn /* The aperture value is a multiple of 4 MB */ 210214603Snwhitehorn aperture /= (4*1024*1024); 211214603Snwhitehorn 212214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_BASE, 213214603Snwhitehorn (sc->gatt->ag_physical & 0xfffff000) | aperture, 4); 214214603Snwhitehorn 215214603Snwhitehorn return (0); 216214603Snwhitehorn} 217214603Snwhitehorn 218214603Snwhitehornstatic int 219214603Snwhitehornagp_apple_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical) 220214603Snwhitehorn{ 221214603Snwhitehorn struct agp_apple_softc *sc = device_get_softc(dev); 222214603Snwhitehorn 223214603Snwhitehorn if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 224214603Snwhitehorn return EINVAL; 225214603Snwhitehorn 226214603Snwhitehorn sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 227214603Snwhitehorn __asm __volatile("dcbst 0,%0; sync" :: 228214603Snwhitehorn "r"(&sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT]) : "memory"); 229214603Snwhitehorn return (0); 230214603Snwhitehorn} 231214603Snwhitehorn 232214603Snwhitehornstatic int 233214603Snwhitehornagp_apple_unbind_page(device_t dev, vm_offset_t offset) 234214603Snwhitehorn{ 235214603Snwhitehorn struct agp_apple_softc *sc = device_get_softc(dev); 236214603Snwhitehorn 237214603Snwhitehorn if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 238214603Snwhitehorn return EINVAL; 239214603Snwhitehorn 240214603Snwhitehorn sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 241214603Snwhitehorn __asm __volatile("dcbst 0,%0; sync" :: 242214603Snwhitehorn "r"(&sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT]) : "memory"); 243214603Snwhitehorn return (0); 244214603Snwhitehorn} 245214603Snwhitehorn 246214603Snwhitehornstatic void 247214603Snwhitehornagp_apple_flush_tlb(device_t dev) 248214603Snwhitehorn{ 249214603Snwhitehorn struct agp_apple_softc *sc = device_get_softc(dev); 250214603Snwhitehorn uint32_t cntrl = UNIN_AGP_GART_ENABLE; 251214603Snwhitehorn 252214603Snwhitehorn if (sc->u3) 253214603Snwhitehorn cntrl |= UNIN_AGP_U3_GART_PERFRD; 254214603Snwhitehorn 255214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, 256214603Snwhitehorn cntrl | UNIN_AGP_GART_INVAL, 4); 257214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, cntrl, 4); 258214603Snwhitehorn 259214603Snwhitehorn if (sc->needs_2x_reset) { 260214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, 261214603Snwhitehorn cntrl | UNIN_AGP_GART_2XRESET, 4); 262214603Snwhitehorn pci_write_config(dev, UNIN_AGP_GART_CONTROL, cntrl, 4); 263214603Snwhitehorn } 264214603Snwhitehorn} 265214603Snwhitehorn 266214603Snwhitehornstatic device_method_t agp_apple_methods[] = { 267214603Snwhitehorn /* Device interface */ 268214603Snwhitehorn DEVMETHOD(device_probe, agp_apple_probe), 269214603Snwhitehorn DEVMETHOD(device_attach, agp_apple_attach), 270214603Snwhitehorn DEVMETHOD(device_detach, agp_apple_detach), 271214603Snwhitehorn DEVMETHOD(device_shutdown, bus_generic_shutdown), 272214603Snwhitehorn DEVMETHOD(device_suspend, bus_generic_suspend), 273214603Snwhitehorn DEVMETHOD(device_resume, bus_generic_resume), 274214603Snwhitehorn 275214603Snwhitehorn /* AGP interface */ 276214603Snwhitehorn DEVMETHOD(agp_get_aperture, agp_apple_get_aperture), 277214603Snwhitehorn DEVMETHOD(agp_set_aperture, agp_apple_set_aperture), 278214603Snwhitehorn DEVMETHOD(agp_bind_page, agp_apple_bind_page), 279214603Snwhitehorn DEVMETHOD(agp_unbind_page, agp_apple_unbind_page), 280214603Snwhitehorn DEVMETHOD(agp_flush_tlb, agp_apple_flush_tlb), 281214603Snwhitehorn DEVMETHOD(agp_enable, agp_generic_enable), 282214603Snwhitehorn DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 283214603Snwhitehorn DEVMETHOD(agp_free_memory, agp_generic_free_memory), 284214603Snwhitehorn DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 285214603Snwhitehorn DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 286214603Snwhitehorn 287214603Snwhitehorn { 0, 0 } 288214603Snwhitehorn}; 289214603Snwhitehorn 290214603Snwhitehornstatic driver_t agp_apple_driver = { 291214603Snwhitehorn "agp", 292214603Snwhitehorn agp_apple_methods, 293214603Snwhitehorn sizeof(struct agp_apple_softc), 294214603Snwhitehorn}; 295214603Snwhitehorn 296214603Snwhitehornstatic devclass_t agp_devclass; 297214603Snwhitehorn 298214603SnwhitehornDRIVER_MODULE(agp_apple, hostb, agp_apple_driver, agp_devclass, 0, 0); 299214603SnwhitehornMODULE_DEPEND(agp_apple, agp, 1, 1, 1); 300214603SnwhitehornMODULE_DEPEND(agp_apple, pci, 1, 1, 1); 301