1 /* $NetBSD: ttwoga.c,v 1.5 2002/10/02 04:06:39 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 1.5 2002/10/02 04:06:39 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 CFATTACH_DECL(ttwoga, sizeof(struct device), 74 ttwogamatch, ttwogaattach, NULL, NULL); 75 76 int ttwogaprint(void *, const char *); 77 78 int ttwopcimatch(struct device *, struct cfdata *, void *); 79 void ttwopciattach(struct device *, struct device *, void *); 80 81 CFATTACH_DECL(ttwopci, sizeof(struct device), 82 ttwopcimatch, ttwopciattach, NULL, NULL); 83 84 int ttwopciprint(void *, const char *); 85 86 /* 87 * There can be only one, but it might have 2 primary PCI busses. 88 */ 89 int ttwogafound; 90 struct ttwoga_config ttwoga_configuration[2]; 91 92 /* CBUS address bias for Gamma systems. */ 93 bus_addr_t ttwoga_gamma_cbus_bias; 94 95 #define GIGABYTE (1024UL * 1024UL * 1024UL) 96 #define MEGABYTE (1024UL * 1024UL) 97 98 const struct ttwoga_sysmap ttwoga_sysmap[2] = { 99 /* Base System size Bus size */ 100 { T2_PCI0_SIO_BASE, 256UL * MEGABYTE, 8UL * MEGABYTE, 101 T2_PCI0_SMEM_BASE, 4UL * GIGABYTE, 128UL * MEGABYTE, 102 T2_PCI0_DMEM_BASE, 1UL * GIGABYTE, 1UL * GIGABYTE, 103 T2_PCI0_CONF_BASE, 104 }, 105 { T2_PCI1_SIO_BASE, 256UL * MEGABYTE, 8UL * MEGABYTE, 106 T2_PCI1_SMEM_BASE, 2UL * GIGABYTE, 64UL * MEGABYTE, 107 T2_PCI1_DMEM_BASE, 2UL * GIGABYTE, 2UL * GIGABYTE, 108 T2_PCI1_CONF_BASE, 109 }, 110 }; 111 112 #undef GIGABYTE 113 #undef MEGABYTE 114 115 int 116 ttwogamatch(struct device *parent, struct cfdata *match, void *aux) 117 { 118 struct mainbus_attach_args *ma = aux; 119 120 /* Make sure that we're looking for a T2 Gate Array. */ 121 if (strcmp(ma->ma_name, match->cf_name) != 0) 122 return (0); 123 124 if (ttwogafound) 125 return (0); 126 127 return (1); 128 } 129 130 void 131 ttwogaattach(struct device *parent, struct device *self, void *aux) 132 { 133 struct pcibus_attach_args pba; 134 int hose; 135 136 printf("\n"); 137 138 /* note that we've attached the chipset; can't have 2 T2s */ 139 ttwogafound = 1; 140 141 /* 142 * Don't do much here; real work is deferred to the ttwopci 143 * layer. 144 */ 145 for (hose = 0; hose < 1 /* XXX */; hose++) { 146 #if 0 /* XXX */ 147 if (badaddr(_T2GA(hose, T2_IOCSR), sizeof(u_int64_t))) 148 continue; 149 #endif 150 memset(&pba, 0, sizeof(pba)); 151 pba.pba_busname = "ttwopci"; 152 pba.pba_bus = hose; 153 154 (void) config_found(self, &pba, ttwogaprint); 155 } 156 } 157 158 int 159 ttwogaprint(void *aux, const char *pnp) 160 { 161 struct pcibus_attach_args *pba = aux; 162 163 if (pnp) 164 printf("%s at %s", pba->pba_busname, pnp); 165 printf(" hose %d", pba->pba_bus); 166 return (UNCONF); 167 } 168 169 /* 170 * Set up the chipset's function pointers. 171 */ 172 struct ttwoga_config * 173 ttwoga_init(int hose, int mallocsafe) 174 { 175 struct ttwoga_config *tcp; 176 177 if (hose < 0 || hose > 1) 178 panic("ttwoga_init: bad hose # %d", hose); 179 180 tcp = &ttwoga_configuration[hose]; 181 tcp->tc_hose = hose; 182 183 tcp->tc_sysmap = &ttwoga_sysmap[hose]; 184 185 /* 186 * Sable-Gamma has a CBUS address bias. 187 */ 188 ttwoga_gamma_cbus_bias = (alpha_implver() == ALPHA_IMPLVER_EV5) ? 189 T2_GAMMA_CBUS_BIAS : 0; 190 191 alpha_mb(); 192 193 tcp->tc_io_bus_start = (T2GA(tcp, T2_HAE0_2) & HAE0_2_PUA2) << 23; 194 tcp->tc_d_mem_bus_start = (T2GA(tcp, T2_HAE0_4) & HAE0_4_PUA1) << 30; 195 tcp->tc_s_mem_bus_start = (T2GA(tcp, T2_HAE0_1) & HAE0_1_PUA1) << 27; 196 197 tcp->tc_rev = (T2GA(tcp, T2_IOCSR) & IOCSR_TRN) >> IOCSR_TRN_SHIFT; 198 199 if (tcp->tc_initted == 0) { 200 /* don't do these twice since they set up extents */ 201 ttwoga_bus_io_init(&tcp->tc_iot, tcp); 202 ttwoga_bus_mem_init(&tcp->tc_memt, tcp); 203 } 204 tcp->tc_mallocsafe = mallocsafe; 205 206 ttwoga_pci_init(&tcp->tc_pc, tcp); 207 208 tcp->tc_initted = 1; 209 210 return (tcp); 211 } 212 213 int 214 ttwopcimatch(struct device *parent, struct cfdata *match, void *aux) 215 { 216 struct pcibus_attach_args *pba = aux; 217 218 if (strcmp(pba->pba_busname, match->cf_name) != 0) 219 return (0); 220 221 if (match->cf_loc[PCIBUSCF_BUS] != PCIBUSCF_BUS_DEFAULT && 222 match->cf_loc[PCIBUSCF_BUS] != pba->pba_bus) 223 return (0); 224 225 return (1); 226 } 227 228 void 229 ttwopciattach(struct device *parent, struct device *self, void *aux) 230 { 231 struct pcibus_attach_args *pba = aux, npba; 232 struct ttwoga_config *tcp; 233 234 /* 235 * set up the chipset's info; done one at console init time 236 * (maybe), but doesn't hurt to do it twice. 237 */ 238 tcp = ttwoga_init(pba->pba_bus, 1); 239 240 ttwoga_dma_init(tcp); 241 242 if (tcp->tc_rev < TRN_T3) 243 printf(": T2 Gate Array rev. %d\n", tcp->tc_rev); 244 else 245 printf(": T3 or T4 Gate Array rev. %d\n", tcp->tc_rev); 246 247 if (tcp->tc_rev < 1) 248 printf("%s: WARNING: T2 NOT PASS2... NO BETS...\n", 249 self->dv_xname); 250 251 switch (cputype) { 252 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 253 case ST_DEC_2100_A500: 254 case ST_DEC_2100A_A500: 255 pci_2100_a500_pickintr(tcp); 256 break; 257 #endif 258 259 default: 260 panic("ttwogaattach: shouldn't be here, really..."); 261 } 262 263 npba.pba_iot = &tcp->tc_iot; 264 npba.pba_memt = &tcp->tc_memt; 265 npba.pba_dmat = 266 alphabus_dma_get_tag(&tcp->tc_dmat_direct, ALPHA_BUS_PCI); 267 npba.pba_pc = &tcp->tc_pc; 268 npba.pba_bus = 0; 269 npba.pba_bridgetag = NULL; 270 npba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 271 272 /* 273 * Hose 0 has the STDIO module. 274 */ 275 if (pba->pba_bus == 0) { 276 npba.pba_busname = "sableio"; 277 (void) config_found(self, &npba, ttwopciprint); 278 } 279 280 npba.pba_busname = "pci"; 281 (void) config_found(self, &npba, ttwopciprint); 282 } 283 284 int 285 ttwopciprint(void *aux, const char *pnp) 286 { 287 struct pcibus_attach_args *pba = aux; 288 289 if (pnp) 290 printf("%s at %s", pba->pba_busname, pnp); 291 printf(" bus %d", pba->pba_bus); 292 return (UNCONF); 293 } 294