1 /* $NetBSD: ttwoga.c,v 1.2 2002/05/16 01:01:32 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "opt_dec_2100_a500.h" 40 #include "opt_dec_2100a_a500.h" 41 42 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 43 44 __KERNEL_RCSID(0, "$NetBSD: ttwoga.c,v 1.2 2002/05/16 01:01:32 thorpej Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/malloc.h> 50 #include <sys/device.h> 51 52 #include <machine/autoconf.h> 53 #include <machine/rpb.h> 54 55 #include <dev/isa/isareg.h> 56 #include <dev/isa/isavar.h> 57 58 #include <dev/eisa/eisavar.h> 59 60 #include <dev/pci/pcireg.h> 61 #include <dev/pci/pcivar.h> 62 63 #include <alpha/pci/ttwogareg.h> 64 #include <alpha/pci/ttwogavar.h> 65 66 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 67 #include <alpha/pci/pci_2100_a500.h> 68 #endif 69 70 int ttwogamatch(struct device *, struct cfdata *, void *); 71 void ttwogaattach(struct device *, struct device *, void *); 72 73 struct cfattach ttwoga_ca = { 74 sizeof(struct device), ttwogamatch, ttwogaattach 75 }; 76 77 int ttwogaprint(void *, const char *); 78 79 int ttwopcimatch(struct device *, struct cfdata *, void *); 80 void ttwopciattach(struct device *, struct device *, void *); 81 82 struct cfattach ttwopci_ca = { 83 sizeof(struct device), ttwopcimatch, ttwopciattach 84 }; 85 86 int ttwopciprint(void *, const char *); 87 88 /* 89 * There can be only one, but it might have 2 primary PCI busses. 90 */ 91 int ttwogafound; 92 struct ttwoga_config ttwoga_configuration[2]; 93 94 /* CBUS address bias for Gamma systems. */ 95 bus_addr_t ttwoga_gamma_cbus_bias; 96 97 #define GIGABYTE (1024UL * 1024UL * 1024UL) 98 #define MEGABYTE (1024UL * 1024UL) 99 100 const struct ttwoga_sysmap ttwoga_sysmap[2] = { 101 /* Base System size Bus size */ 102 { T2_PCI0_SIO_BASE, 256UL * MEGABYTE, 8UL * MEGABYTE, 103 T2_PCI0_SMEM_BASE, 4UL * GIGABYTE, 128UL * MEGABYTE, 104 T2_PCI0_DMEM_BASE, 1UL * GIGABYTE, 1UL * GIGABYTE, 105 T2_PCI0_CONF_BASE, 106 }, 107 { T2_PCI1_SIO_BASE, 256UL * MEGABYTE, 8UL * MEGABYTE, 108 T2_PCI1_SMEM_BASE, 2UL * GIGABYTE, 64UL * MEGABYTE, 109 T2_PCI1_DMEM_BASE, 2UL * GIGABYTE, 2UL * GIGABYTE, 110 T2_PCI1_CONF_BASE, 111 }, 112 }; 113 114 #undef GIGABYTE 115 #undef MEGABYTE 116 117 int 118 ttwogamatch(struct device *parent, struct cfdata *match, void *aux) 119 { 120 struct mainbus_attach_args *ma = aux; 121 122 /* Make sure that we're looking for a T2 Gate Array. */ 123 if (strcmp(ma->ma_name, match->cf_driver->cd_name) != 0) 124 return (0); 125 126 if (ttwogafound) 127 return (0); 128 129 return (1); 130 } 131 132 void 133 ttwogaattach(struct device *parent, struct device *self, void *aux) 134 { 135 struct pcibus_attach_args pba; 136 int hose; 137 138 printf("\n"); 139 140 /* note that we've attached the chipset; can't have 2 T2s */ 141 ttwogafound = 1; 142 143 /* 144 * Don't do much here; real work is deferred to the ttwopci 145 * layer. 146 */ 147 for (hose = 0; hose < 1 /* XXX */; hose++) { 148 #if 0 /* XXX */ 149 if (badaddr(_T2GA(hose, T2_IOCSR), sizeof(u_int64_t))) 150 continue; 151 #endif 152 memset(&pba, 0, sizeof(pba)); 153 pba.pba_busname = "ttwopci"; 154 pba.pba_bus = hose; 155 156 (void) config_found(self, &pba, ttwogaprint); 157 } 158 } 159 160 int 161 ttwogaprint(void *aux, const char *pnp) 162 { 163 struct pcibus_attach_args *pba = aux; 164 165 if (pnp) 166 printf("%s at %s", pba->pba_busname, pnp); 167 printf(" hose %d", pba->pba_bus); 168 return (UNCONF); 169 } 170 171 /* 172 * Set up the chipset's function pointers. 173 */ 174 struct ttwoga_config * 175 ttwoga_init(int hose, int mallocsafe) 176 { 177 struct ttwoga_config *tcp; 178 179 if (hose < 0 || hose > 1) 180 panic("ttwoga_init: bad hose # %d", hose); 181 182 tcp = &ttwoga_configuration[hose]; 183 tcp->tc_hose = hose; 184 185 tcp->tc_sysmap = &ttwoga_sysmap[hose]; 186 187 /* 188 * Sable-Gamma has a CBUS address bias. 189 */ 190 ttwoga_gamma_cbus_bias = (alpha_implver() == ALPHA_IMPLVER_EV5) ? 191 T2_GAMMA_CBUS_BIAS : 0; 192 193 alpha_mb(); 194 195 tcp->tc_io_bus_start = (T2GA(tcp, T2_HAE0_2) & HAE0_2_PUA2) << 23; 196 tcp->tc_d_mem_bus_start = (T2GA(tcp, T2_HAE0_4) & HAE0_4_PUA1) << 30; 197 tcp->tc_s_mem_bus_start = (T2GA(tcp, T2_HAE0_1) & HAE0_1_PUA1) << 27; 198 199 tcp->tc_rev = (T2GA(tcp, T2_IOCSR) & IOCSR_TRN) >> IOCSR_TRN_SHIFT; 200 201 if (tcp->tc_initted == 0) { 202 /* don't do these twice since they set up extents */ 203 ttwoga_bus_io_init(&tcp->tc_iot, tcp); 204 ttwoga_bus_mem_init(&tcp->tc_memt, tcp); 205 } 206 tcp->tc_mallocsafe = mallocsafe; 207 208 ttwoga_pci_init(&tcp->tc_pc, tcp); 209 210 tcp->tc_initted = 1; 211 212 return (tcp); 213 } 214 215 int 216 ttwopcimatch(struct device *parent, struct cfdata *match, void *aux) 217 { 218 struct pcibus_attach_args *pba = aux; 219 220 if (strcmp(pba->pba_busname, match->cf_driver->cd_name) != 0) 221 return (0); 222 223 if (match->cf_loc[PCIBUSCF_BUS] != PCIBUSCF_BUS_DEFAULT && 224 match->cf_loc[PCIBUSCF_BUS] != pba->pba_bus) 225 return (0); 226 227 return (1); 228 } 229 230 void 231 ttwopciattach(struct device *parent, struct device *self, void *aux) 232 { 233 struct pcibus_attach_args *pba = aux, npba; 234 struct ttwoga_config *tcp; 235 236 /* 237 * set up the chipset's info; done one at console init time 238 * (maybe), but doesn't hurt to do it twice. 239 */ 240 tcp = ttwoga_init(pba->pba_bus, 1); 241 242 ttwoga_dma_init(tcp); 243 244 if (tcp->tc_rev < TRN_T3) 245 printf(": T2 Gate Array rev. %d\n", tcp->tc_rev); 246 else 247 printf(": T3 or T4 Gate Array rev. %d\n", tcp->tc_rev); 248 249 if (tcp->tc_rev < 1) 250 printf("%s: WARNING: T2 NOT PASS2... NO BETS...\n", 251 self->dv_xname); 252 253 switch (cputype) { 254 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 255 case ST_DEC_2100_A500: 256 case ST_DEC_2100A_A500: 257 pci_2100_a500_pickintr(tcp); 258 break; 259 #endif 260 261 default: 262 panic("ttwogaattach: shouldn't be here, really..."); 263 } 264 265 npba.pba_iot = &tcp->tc_iot; 266 npba.pba_memt = &tcp->tc_memt; 267 npba.pba_dmat = 268 alphabus_dma_get_tag(&tcp->tc_dmat_direct, ALPHA_BUS_PCI); 269 npba.pba_pc = &tcp->tc_pc; 270 npba.pba_bus = 0; 271 npba.pba_bridgetag = NULL; 272 npba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 273 274 /* 275 * Hose 0 has the STDIO module. 276 */ 277 if (pba->pba_bus == 0) { 278 npba.pba_busname = "sableio"; 279 (void) config_found(self, &npba, ttwopciprint); 280 } 281 282 npba.pba_busname = "pci"; 283 (void) config_found(self, &npba, ttwopciprint); 284 } 285 286 int 287 ttwopciprint(void *aux, const char *pnp) 288 { 289 struct pcibus_attach_args *pba = aux; 290 291 if (pnp) 292 printf("%s at %s", pba->pba_busname, pnp); 293 printf(" bus %d", pba->pba_bus); 294 return (UNCONF); 295 } 296