agp_apple.c revision 1.1.18.3
1 1.1.18.3 yamt /* $NetBSD: agp_apple.c,v 1.1.18.3 2007/10/27 11:32:31 yamt Exp $ */ 2 1.1.18.2 yamt 3 1.1.18.2 yamt /*- 4 1.1.18.2 yamt * Copyright (c) 2007 Michael Lorenz 5 1.1.18.2 yamt * All rights reserved. 6 1.1.18.2 yamt * 7 1.1.18.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.1.18.2 yamt * modification, are permitted provided that the following conditions 9 1.1.18.2 yamt * are met: 10 1.1.18.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.1.18.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.1.18.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.18.2 yamt * notice, this list of conditions and the following disclaimer in the 14 1.1.18.2 yamt * documentation and/or other materials provided with the distribution. 15 1.1.18.2 yamt * 3. Neither the name of The NetBSD Foundation nor the names of its 16 1.1.18.2 yamt * contributors may be used to endorse or promote products derived 17 1.1.18.2 yamt * from this software without specific prior written permission. 18 1.1.18.2 yamt * 19 1.1.18.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.18.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.18.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.18.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.18.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.18.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.18.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.18.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.18.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.18.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.18.2 yamt * POSSIBILITY OF SUCH DAMAGE. 30 1.1.18.2 yamt */ 31 1.1.18.2 yamt 32 1.1.18.2 yamt #include <sys/cdefs.h> 33 1.1.18.3 yamt __KERNEL_RCSID(0, "$NetBSD: agp_apple.c,v 1.1.18.3 2007/10/27 11:32:31 yamt Exp $"); 34 1.1.18.2 yamt #include <sys/param.h> 35 1.1.18.2 yamt #include <sys/systm.h> 36 1.1.18.2 yamt #include <sys/malloc.h> 37 1.1.18.2 yamt #include <sys/kernel.h> 38 1.1.18.2 yamt #include <sys/lock.h> 39 1.1.18.2 yamt #include <sys/proc.h> 40 1.1.18.2 yamt #include <sys/conf.h> 41 1.1.18.2 yamt #include <sys/device.h> 42 1.1.18.2 yamt #include <sys/agpio.h> 43 1.1.18.2 yamt 44 1.1.18.2 yamt #include <uvm/uvm_extern.h> 45 1.1.18.2 yamt 46 1.1.18.2 yamt #include <dev/pci/pcivar.h> 47 1.1.18.2 yamt #include <dev/pci/pcireg.h> 48 1.1.18.2 yamt #include <dev/pci/agpvar.h> 49 1.1.18.2 yamt #include <dev/pci/agpreg.h> 50 1.1.18.2 yamt 51 1.1.18.3 yamt #include <sys/bus.h> 52 1.1.18.2 yamt 53 1.1.18.2 yamt static u_int32_t agp_apple_get_aperture(struct agp_softc *); 54 1.1.18.2 yamt static int agp_apple_set_aperture(struct agp_softc *, u_int32_t); 55 1.1.18.2 yamt static int agp_apple_bind_page(struct agp_softc *, off_t, bus_addr_t); 56 1.1.18.2 yamt static int agp_apple_unbind_page(struct agp_softc *, off_t); 57 1.1.18.2 yamt static void agp_apple_flush_tlb(struct agp_softc *); 58 1.1.18.2 yamt 59 1.1.18.2 yamt static struct agp_methods agp_apple_methods = { 60 1.1.18.2 yamt agp_apple_get_aperture, 61 1.1.18.2 yamt agp_apple_set_aperture, 62 1.1.18.2 yamt agp_apple_bind_page, 63 1.1.18.2 yamt agp_apple_unbind_page, 64 1.1.18.2 yamt agp_apple_flush_tlb, 65 1.1.18.2 yamt agp_generic_enable, 66 1.1.18.2 yamt agp_generic_alloc_memory, 67 1.1.18.2 yamt agp_generic_free_memory, 68 1.1.18.2 yamt agp_generic_bind_memory, 69 1.1.18.2 yamt agp_generic_unbind_memory, 70 1.1.18.2 yamt }; 71 1.1.18.2 yamt 72 1.1.18.2 yamt struct agp_apple_softc { 73 1.1.18.2 yamt u_int32_t initial_aperture; /* aperture size at startup */ 74 1.1.18.2 yamt struct agp_gatt *gatt; 75 1.1.18.2 yamt }; 76 1.1.18.2 yamt 77 1.1.18.2 yamt int 78 1.1.18.2 yamt agp_apple_attach(struct device *parent, struct device *self, void *aux) 79 1.1.18.2 yamt { 80 1.1.18.2 yamt struct pci_attach_args *pa = aux; 81 1.1.18.2 yamt struct agp_softc *sc = (void *)self; 82 1.1.18.2 yamt struct agp_apple_softc *asc; 83 1.1.18.2 yamt struct agp_gatt *gatt; 84 1.1.18.2 yamt 85 1.1.18.2 yamt asc = malloc(sizeof *asc, M_AGP, M_NOWAIT|M_ZERO); 86 1.1.18.2 yamt if (asc == NULL) { 87 1.1.18.2 yamt aprint_error(": can't allocate chipset-specific softc\n"); 88 1.1.18.2 yamt return ENOMEM; 89 1.1.18.2 yamt } 90 1.1.18.2 yamt sc->as_chipc = asc; 91 1.1.18.2 yamt sc->as_methods = &agp_apple_methods; 92 1.1.18.2 yamt pci_get_capability(pa->pa_pc, pa->pa_tag, PCI_CAP_AGP, &sc->as_capoff, 93 1.1.18.2 yamt NULL); 94 1.1.18.2 yamt 95 1.1.18.2 yamt sc->as_apaddr = 0; 96 1.1.18.2 yamt sc->as_apsize = 8 * 1024 * 1024; 97 1.1.18.2 yamt sc->as_apflags = 0; 98 1.1.18.2 yamt sc->as_pc = pa->pa_pc; 99 1.1.18.2 yamt sc->as_tag = pa->pa_tag; 100 1.1.18.2 yamt sc->as_apt = pa->pa_memt; 101 1.1.18.2 yamt 102 1.1.18.2 yamt asc->initial_aperture = sc->as_apsize; 103 1.1.18.2 yamt 104 1.1.18.2 yamt for (;;) { 105 1.1.18.2 yamt gatt = agp_alloc_gatt(sc); 106 1.1.18.2 yamt if (gatt) 107 1.1.18.2 yamt break; 108 1.1.18.2 yamt sc->as_apsize = sc->as_apsize >> 1; 109 1.1.18.2 yamt if (sc->as_apsize == 0) { 110 1.1.18.2 yamt aprint_error(": can't set aperture size\n"); 111 1.1.18.2 yamt return ENOMEM; 112 1.1.18.2 yamt } 113 1.1.18.2 yamt } 114 1.1.18.2 yamt asc->gatt = gatt; 115 1.1.18.2 yamt 116 1.1.18.2 yamt /* Install the gatt. */ 117 1.1.18.2 yamt aprint_error("gatt: %08x %d MB\n", gatt->ag_physical, sc->as_apsize >> 20); 118 1.1.18.2 yamt pci_conf_write(pa->pa_pc, pa->pa_tag, APPLE_UNINORTH_GART_BASE, 119 1.1.18.2 yamt (gatt->ag_physical & 0xfffff000) | 120 1.1.18.2 yamt (sc->as_apsize >> 22)); 121 1.1.18.2 yamt 122 1.1.18.2 yamt /* Enable the aperture. */ 123 1.1.18.2 yamt pci_conf_write(pa->pa_pc, pa->pa_tag, APPLE_UNINORTH_GART_CTRL, 124 1.1.18.2 yamt APPLE_GART_EN); 125 1.1.18.2 yamt pci_conf_write(pa->pa_pc, pa->pa_tag, APPLE_UNINORTH_GART_CTRL, 126 1.1.18.2 yamt APPLE_GART_EN | APPLE_GART_INV); 127 1.1.18.2 yamt pci_conf_write(pa->pa_pc, pa->pa_tag, APPLE_UNINORTH_GART_CTRL, 128 1.1.18.2 yamt APPLE_GART_EN); 129 1.1.18.2 yamt return 0; 130 1.1.18.2 yamt } 131 1.1.18.2 yamt 132 1.1.18.2 yamt static u_int32_t 133 1.1.18.2 yamt agp_apple_get_aperture(struct agp_softc *sc) 134 1.1.18.2 yamt { 135 1.1.18.2 yamt #if 0 136 1.1.18.2 yamt u_int32_t apsize = 0; 137 1.1.18.2 yamt 138 1.1.18.2 yamt aprint_error("%s: ", __func__); 139 1.1.18.2 yamt apsize = pci_conf_read(sc->as_pc, sc->as_tag, 140 1.1.18.2 yamt APPLE_UNINORTH_GART_BASE) & 0x0000ffff; 141 1.1.18.2 yamt aprint_error("%08x\n", apsize); 142 1.1.18.2 yamt return (apsize << 22); 143 1.1.18.2 yamt #else 144 1.1.18.2 yamt return sc->as_apsize; 145 1.1.18.2 yamt #endif 146 1.1.18.2 yamt } 147 1.1.18.2 yamt 148 1.1.18.2 yamt static int 149 1.1.18.2 yamt agp_apple_set_aperture(struct agp_softc *sc, u_int32_t aperture) 150 1.1.18.2 yamt { 151 1.1.18.2 yamt pcireg_t reg; 152 1.1.18.2 yamt 153 1.1.18.2 yamt aprint_error("%s: %08x\n", __func__, aperture); 154 1.1.18.2 yamt reg = pci_conf_read(sc->as_pc, sc->as_tag, APPLE_UNINORTH_GART_BASE) 155 1.1.18.2 yamt & 0xfffff000; 156 1.1.18.2 yamt reg |= ((aperture >> 22) & 0xfff); 157 1.1.18.2 yamt pci_conf_write(sc->as_pc, sc->as_tag, APPLE_UNINORTH_GART_BASE, reg); 158 1.1.18.2 yamt sc->as_apsize = aperture; 159 1.1.18.2 yamt return 0; 160 1.1.18.2 yamt } 161 1.1.18.2 yamt 162 1.1.18.2 yamt static int 163 1.1.18.2 yamt agp_apple_bind_page(struct agp_softc *sc, off_t offset, bus_addr_t physical) 164 1.1.18.2 yamt { 165 1.1.18.2 yamt struct agp_apple_softc *asc = sc->as_chipc; 166 1.1.18.2 yamt 167 1.1.18.2 yamt if (offset < 0 || offset >= (asc->gatt->ag_entries << AGP_PAGE_SHIFT)) 168 1.1.18.2 yamt return EINVAL; 169 1.1.18.2 yamt 170 1.1.18.2 yamt asc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = htole32(physical); 171 1.1.18.2 yamt return 0; 172 1.1.18.2 yamt } 173 1.1.18.2 yamt 174 1.1.18.2 yamt static int 175 1.1.18.2 yamt agp_apple_unbind_page(struct agp_softc *sc, off_t offset) 176 1.1.18.2 yamt { 177 1.1.18.2 yamt struct agp_apple_softc *asc = sc->as_chipc; 178 1.1.18.2 yamt 179 1.1.18.2 yamt if (offset < 0 || offset >= (asc->gatt->ag_entries << AGP_PAGE_SHIFT)) 180 1.1.18.2 yamt return EINVAL; 181 1.1.18.2 yamt 182 1.1.18.2 yamt asc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 183 1.1.18.2 yamt return 0; 184 1.1.18.2 yamt } 185 1.1.18.2 yamt 186 1.1.18.2 yamt static void 187 1.1.18.2 yamt agp_apple_flush_tlb(struct agp_softc *sc) 188 1.1.18.2 yamt { 189 1.1.18.2 yamt 190 1.1.18.2 yamt pci_conf_write(sc->as_pc, sc->as_tag, APPLE_UNINORTH_GART_CTRL, 191 1.1.18.2 yamt APPLE_GART_EN); 192 1.1.18.2 yamt pci_conf_write(sc->as_pc, sc->as_tag, APPLE_UNINORTH_GART_CTRL, 193 1.1.18.2 yamt APPLE_GART_EN | APPLE_GART_INV); 194 1.1.18.2 yamt pci_conf_write(sc->as_pc, sc->as_tag, APPLE_UNINORTH_GART_CTRL, 195 1.1.18.2 yamt APPLE_GART_EN); 196 1.1.18.2 yamt } 197
Indexes created Mon Oct 20 20:10:13 GMT 2025