ttwoga.c revision 1.20
1 /* $NetBSD: ttwoga.c,v 1.20 2021/08/07 16:18:41 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include "opt_dec_2100_a500.h" 33 #include "opt_dec_2100a_a500.h" 34 35 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 36 37 __KERNEL_RCSID(0, "$NetBSD: ttwoga.c,v 1.20 2021/08/07 16:18:41 thorpej Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 44 #include <machine/autoconf.h> 45 #include <machine/rpb.h> 46 47 #include <dev/isa/isareg.h> 48 #include <dev/isa/isavar.h> 49 50 #include <dev/eisa/eisavar.h> 51 52 #include <dev/pci/pcireg.h> 53 #include <dev/pci/pcivar.h> 54 55 #include <alpha/pci/ttwogareg.h> 56 #include <alpha/pci/ttwogavar.h> 57 58 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 59 #include <alpha/pci/pci_2100_a500.h> 60 #endif 61 62 #include "locators.h" 63 64 static int ttwogamatch(device_t, cfdata_t, void *); 65 static void ttwogaattach(device_t, device_t, void *); 66 67 CFATTACH_DECL_NEW(ttwoga, 0, 68 ttwogamatch, ttwogaattach, NULL, NULL); 69 70 static int ttwogaprint(void *, const char *); 71 72 static int ttwopcimatch(device_t, cfdata_t, void *); 73 static void ttwopciattach(device_t, device_t, void *); 74 75 CFATTACH_DECL_NEW(ttwopci, 0, 76 ttwopcimatch, ttwopciattach, NULL, NULL); 77 78 static int ttwosableioprint(void *, const char *); 79 80 /* 81 * There can be only one, but it might have 2 primary PCI busses. 82 */ 83 static int ttwogafound; 84 static struct ttwoga_config ttwoga_configuration[2]; 85 86 /* CBUS address bias for Gamma systems. */ 87 bus_addr_t ttwoga_gamma_cbus_bias; 88 89 #define GIGABYTE (1024UL * 1024UL * 1024UL) 90 #define MEGABYTE (1024UL * 1024UL) 91 92 static const struct ttwoga_sysmap ttwoga_sysmap[2] = { 93 /* Base System size Bus size */ 94 { T2_PCI0_SIO_BASE, 256UL * MEGABYTE, 8UL * MEGABYTE, 95 T2_PCI0_SMEM_BASE, 4UL * GIGABYTE, 128UL * MEGABYTE, 96 T2_PCI0_DMEM_BASE, 1UL * GIGABYTE, 1UL * GIGABYTE, 97 T2_PCI0_CONF_BASE, 98 }, 99 { T2_PCI1_SIO_BASE, 256UL * MEGABYTE, 8UL * MEGABYTE, 100 T2_PCI1_SMEM_BASE, 2UL * GIGABYTE, 64UL * MEGABYTE, 101 T2_PCI1_DMEM_BASE, 2UL * GIGABYTE, 2UL * GIGABYTE, 102 T2_PCI1_CONF_BASE, 103 }, 104 }; 105 106 #undef GIGABYTE 107 #undef MEGABYTE 108 109 static int 110 ttwogamatch(device_t parent, cfdata_t match, void *aux) 111 { 112 struct mainbus_attach_args *ma = aux; 113 114 /* Make sure that we're looking for a T2 Gate Array. */ 115 if (strcmp(ma->ma_name, match->cf_name) != 0) 116 return (0); 117 118 if (ttwogafound) 119 return (0); 120 121 return (1); 122 } 123 124 static void 125 ttwogaattach(device_t parent, device_t self, void *aux) 126 { 127 struct pcibus_attach_args pba; 128 int hose; 129 130 printf("\n"); 131 132 /* note that we've attached the chipset; can't have 2 T2s */ 133 ttwogafound = 1; 134 135 /* 136 * Don't do much here; real work is deferred to the ttwopci 137 * layer. 138 */ 139 for (hose = 0; hose < 1 /* XXX */; hose++) { 140 #if 0 /* XXX */ 141 if (badaddr(_T2GA(hose, T2_IOCSR), sizeof(uint64_t))) 142 continue; 143 #endif 144 memset(&pba, 0, sizeof(pba)); 145 pba.pba_bus = hose; 146 147 config_found(self, &pba, ttwogaprint, CFARGS_NONE); 148 } 149 } 150 151 static int 152 ttwogaprint(void *aux, const char *pnp) 153 { 154 struct pcibus_attach_args *pba = aux; 155 156 if (pnp) 157 aprint_normal("ttwopci at %s", pnp); 158 aprint_normal(" hose %d", pba->pba_bus); 159 return (UNCONF); 160 } 161 162 /* 163 * Set up the chipset's function pointers. 164 */ 165 struct ttwoga_config * 166 ttwoga_init(int hose, int mallocsafe) 167 { 168 struct ttwoga_config *tcp; 169 170 if (hose < 0 || hose > 1) 171 panic("ttwoga_init: bad hose # %d", hose); 172 173 tcp = &ttwoga_configuration[hose]; 174 tcp->tc_hose = hose; 175 176 tcp->tc_sysmap = &ttwoga_sysmap[hose]; 177 178 /* 179 * Sable-Gamma has a CBUS address bias. 180 */ 181 ttwoga_gamma_cbus_bias = (alpha_implver() == ALPHA_IMPLVER_EV5) ? 182 T2_GAMMA_CBUS_BIAS : 0; 183 184 alpha_mb(); 185 186 tcp->tc_io_bus_start = (T2GA(tcp, T2_HAE0_2) & HAE0_2_PUA2) << 23; 187 tcp->tc_d_mem_bus_start = (T2GA(tcp, T2_HAE0_4) & HAE0_4_PUA1) << 30; 188 tcp->tc_s_mem_bus_start = (T2GA(tcp, T2_HAE0_1) & HAE0_1_PUA1) << 27; 189 190 tcp->tc_rev = (T2GA(tcp, T2_IOCSR) & IOCSR_TRN) >> IOCSR_TRN_SHIFT; 191 192 if (tcp->tc_initted == 0) { 193 /* don't do these twice since they set up extents */ 194 ttwoga_bus_io_init(&tcp->tc_iot, tcp); 195 ttwoga_bus_mem_init(&tcp->tc_memt, tcp); 196 } 197 tcp->tc_mallocsafe = mallocsafe; 198 199 ttwoga_pci_init(&tcp->tc_pc, tcp); 200 201 tcp->tc_initted = 1; 202 203 return (tcp); 204 } 205 206 static int 207 ttwopcimatch(device_t parent, cfdata_t match, void *aux) 208 { 209 struct pcibus_attach_args *pba = aux; 210 211 if (match->cf_loc[PCIBUSCF_BUS] != PCIBUSCF_BUS_DEFAULT && 212 match->cf_loc[PCIBUSCF_BUS] != pba->pba_bus) 213 return (0); 214 215 return (1); 216 } 217 218 static void 219 ttwopciattach(device_t parent, device_t self, void *aux) 220 { 221 struct pcibus_attach_args *pba = aux, npba; 222 struct ttwoga_config *tcp; 223 224 /* 225 * set up the chipset's info; done one at console init time 226 * (maybe), but doesn't hurt to do it twice. 227 */ 228 tcp = ttwoga_init(pba->pba_bus, 1); 229 230 ttwoga_dma_init(tcp); 231 232 aprint_normal(": %s Gate Array rev. %d\n", 233 (tcp->tc_rev < TRN_T3) ? "T2" : "T3 or T4", 234 tcp->tc_rev); 235 236 if (tcp->tc_rev < 1) 237 aprint_normal_dev(self, 238 "WARNING: T2 NOT PASS2... NO BETS...\n"); 239 240 alpha_pci_intr_init(tcp, &tcp->tc_iot, &tcp->tc_memt, &tcp->tc_pc); 241 242 npba.pba_iot = &tcp->tc_iot; 243 npba.pba_memt = &tcp->tc_memt; 244 npba.pba_dmat = 245 alphabus_dma_get_tag(&tcp->tc_dmat_direct, ALPHA_BUS_PCI); 246 npba.pba_dmat64 = NULL; 247 npba.pba_pc = &tcp->tc_pc; 248 npba.pba_bus = 0; 249 npba.pba_bridgetag = NULL; 250 npba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY; 251 252 /* 253 * Hose 0 has the STDIO module. 254 */ 255 if (pba->pba_bus == 0) { 256 config_found(self, &npba, ttwosableioprint, 257 CFARGS(.iattr = "sableiobus")); 258 } 259 260 config_found(self, &npba, pcibusprint, 261 CFARGS(.iattr = "pcibus")); 262 } 263 264 static int 265 ttwosableioprint(void *aux, const char *pnp) 266 { 267 struct pcibus_attach_args *pba = aux; 268 269 if (pnp) 270 aprint_normal("sableio at %s", pnp); 271 aprint_normal(" bus %d", pba->pba_bus); 272 return (UNCONF); 273 } 274
Indexes created Thu Oct 02 01:09:59 GMT 2025