1 /* $NetBSD: igsfb_pci.c,v 1.23 2012/01/30 19:41:21 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 2002, 2003 Valeriy E. Ushakov 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * Integraphics Systems IGA 168x and CyberPro series. 32 */ 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: igsfb_pci.c,v 1.23 2012/01/30 19:41:21 drochner Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/buf.h> 42 43 #ifdef __sparc__ /* XXX: this doesn't belong here */ 44 #include <machine/autoconf.h> 45 #endif 46 #include <sys/bus.h> 47 #include <sys/intr.h> 48 49 #include <dev/pci/pcivar.h> 50 #include <dev/pci/pcireg.h> 51 #include <dev/pci/pcidevs.h> 52 53 #include <dev/wscons/wsdisplayvar.h> 54 #include <dev/wscons/wsconsio.h> 55 #include <dev/rasops/rasops.h> 56 #include <dev/wscons/wsdisplay_vconsvar.h> 57 58 #include <dev/ic/igsfbreg.h> 59 #include <dev/ic/igsfbvar.h> 60 #include <dev/pci/igsfb_pcivar.h> 61 62 63 static int igsfb_pci_match_by_id(pcireg_t); 64 static int igsfb_pci_map_regs(struct igsfb_devconfig *, 65 bus_space_tag_t, bus_space_tag_t, 66 pci_chipset_tag_t, 67 pcitag_t, pci_product_id_t); 68 static int igsfb_pci_is_console(pci_chipset_tag_t, pcitag_t); 69 70 static int igsfb_pci_console = 0; 71 static pcitag_t igsfb_pci_constag; 72 73 74 75 static int igsfb_pci_match(device_t, cfdata_t, void *); 76 static void igsfb_pci_attach(device_t, device_t, void *); 77 78 CFATTACH_DECL_NEW(igsfb_pci, sizeof(struct igsfb_softc), 79 igsfb_pci_match, igsfb_pci_attach, NULL, NULL); 80 81 82 static int 83 igsfb_pci_match_by_id(pcireg_t id) 84 { 85 86 if (PCI_VENDOR(id) != PCI_VENDOR_INTEGRAPHICS) 87 return 0; 88 89 switch (PCI_PRODUCT(id)) { 90 case PCI_PRODUCT_INTEGRAPHICS_IGA1682: /* FALLTHROUGH */ 91 case PCI_PRODUCT_INTEGRAPHICS_CYBERPRO2000: /* FALLTHROUGH */ 92 case PCI_PRODUCT_INTEGRAPHICS_CYBERPRO2010: 93 return 1; 94 default: 95 return 0; 96 } 97 } 98 99 100 int 101 igsfb_pci_cnattach(bus_space_tag_t iot, bus_space_tag_t memt, 102 pci_chipset_tag_t pc, 103 int bus, int device, int function) 104 { 105 struct igsfb_devconfig *dc; 106 pcitag_t tag; 107 pcireg_t id; 108 int ret; 109 110 tag = pci_make_tag(pc, bus, device, function); 111 id = pci_conf_read(pc, tag, PCI_ID_REG); 112 113 if (igsfb_pci_match_by_id(id) == 0) 114 return 1; 115 116 dc = &igsfb_console_dc; 117 if (igsfb_pci_map_regs(dc, iot, memt, pc, tag, PCI_PRODUCT(id)) != 0) 118 return 1; 119 120 ret = igsfb_enable(dc->dc_iot, dc->dc_iobase, dc->dc_ioflags); 121 if (ret) 122 return ret; 123 124 ret = igsfb_cnattach_subr(dc); 125 if (ret) 126 return ret; 127 128 igsfb_pci_console = 1; 129 igsfb_pci_constag = tag; 130 131 return 0; 132 } 133 134 135 static int 136 igsfb_pci_is_console(pci_chipset_tag_t pc, pcitag_t tag) 137 { 138 139 return igsfb_pci_console && 140 !memcmp(&tag, &igsfb_pci_constag, sizeof tag); 141 } 142 143 144 static int 145 igsfb_pci_match(device_t parent, cfdata_t match, void *aux) 146 { 147 struct pci_attach_args *pa = aux; 148 149 return igsfb_pci_match_by_id(pa->pa_id); 150 } 151 152 153 static void 154 igsfb_pci_attach(device_t parent, device_t self, void *aux) 155 { 156 struct igsfb_softc *sc = device_private(self); 157 struct pci_attach_args *pa = aux; 158 int isconsole; 159 160 sc->sc_dev = self; 161 162 pci_aprint_devinfo(pa, NULL); 163 164 #if defined(__sparc__) && !defined(KRUPS_FORCE_SERIAL_CONSOLE) 165 /* XXX: this doesn't belong here */ 166 if (PCITAG_NODE(pa->pa_tag) == prom_instance_to_package(prom_stdout())) 167 { 168 int b, d, f; 169 170 pci_decompose_tag(pa->pa_pc, pa->pa_tag, &b, &d, &f); 171 igsfb_pci_cnattach(pa->pa_iot, pa->pa_memt, pa->pa_pc, b,d,f); 172 } 173 #endif 174 175 isconsole = 0; 176 if (igsfb_pci_is_console(pa->pa_pc, pa->pa_tag)) { 177 sc->sc_dc = &igsfb_console_dc; 178 isconsole = 1; 179 } else { 180 sc->sc_dc = malloc(sizeof(struct igsfb_devconfig), 181 M_DEVBUF, M_NOWAIT | M_ZERO); 182 if (sc->sc_dc == NULL) 183 panic("unable to allocate igsfb_devconfig"); 184 if (igsfb_pci_map_regs(sc->sc_dc, 185 pa->pa_iot, pa->pa_memt, pa->pa_pc, 186 pa->pa_tag, PCI_PRODUCT(pa->pa_id)) != 0) 187 { 188 printf("unable to map device registers\n"); 189 free(sc->sc_dc, M_DEVBUF); 190 sc->sc_dc = NULL; 191 return; 192 } 193 194 igsfb_enable(sc->sc_dc->dc_iot, sc->sc_dc->dc_iobase, 195 sc->sc_dc->dc_ioflags); 196 } 197 198 igsfb_attach_subr(sc, isconsole); 199 } 200 201 202 /* 203 * Init memory and i/o bus space tags. Map device registers. 204 * Use memory space mapped i/o space access for i/o registers 205 * for CyberPro cards. 206 */ 207 static int 208 igsfb_pci_map_regs(struct igsfb_devconfig *dc, 209 bus_space_tag_t iot, bus_space_tag_t memt, 210 pci_chipset_tag_t pc, pcitag_t tag, 211 pci_product_id_t id) 212 { 213 214 dc->dc_id = id; 215 216 /* 217 * Configure memory space first since for CyberPro we use 218 * memory-mapped i/o access. Note that we are NOT mapping any 219 * of it yet. (XXX: search for memory BAR?) 220 */ 221 #define IGS_MEM_MAPREG (PCI_MAPREG_START + 0) 222 223 dc->dc_memt = memt; 224 if (pci_mapreg_info(pc, tag, 225 IGS_MEM_MAPREG, PCI_MAPREG_TYPE_MEM, 226 &dc->dc_memaddr, &dc->dc_memsz, &dc->dc_memflags) != 0) 227 { 228 printf("unable to configure memory space\n"); 229 return 1; 230 } 231 232 /* 233 * Configure I/O space. On CyberPro use MMIO. IGS 168x doesn't 234 * have a BAR for its i/o space, so we have to hardcode it. 235 */ 236 if (id >= PCI_PRODUCT_INTEGRAPHICS_CYBERPRO2000) { 237 dc->dc_iot = dc->dc_memt; 238 dc->dc_iobase = dc->dc_memaddr | IGS_MEM_MMIO_SELECT; 239 dc->dc_ioflags = dc->dc_memflags; 240 } else { 241 dc->dc_iot = iot; 242 dc->dc_iobase = 0; 243 dc->dc_ioflags = 0; 244 } 245 246 /* 247 * Map I/O registers. This is done in bus glue, not in common 248 * code because on e.g. ISA bus we'd need to access registers 249 * to obtain/program linear memory location. 250 */ 251 if (bus_space_map(dc->dc_iot, 252 dc->dc_iobase + IGS_REG_BASE, IGS_REG_SIZE, 253 dc->dc_ioflags, 254 &dc->dc_ioh) != 0) 255 { 256 printf("unable to map I/O registers\n"); 257 return 1; 258 } 259 260 return 0; 261 } 262