isp_pci.c revision 1.7
1 /* $NetBSD: isp_pci.c,v 1.7 1997/03/28 21:51:51 cgd Exp $ */ 2 3 /* 4 * PCI specific probe and attach routines for Qlogic ISP SCSI adapters. 5 * 6 * Copyright (c) 1997 by Matthew Jacob 7 * NASA AMES Research Center 8 * All rights reserved. 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 immediately at the beginning of the file, without modification, 15 * this list of conditions, and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 26 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/malloc.h> 38 #include <sys/kernel.h> 39 #include <sys/queue.h> 40 #include <sys/device.h> 41 #include <machine/bus.h> 42 #include <machine/intr.h> 43 #include <scsi/scsi_all.h> 44 #include <scsi/scsiconf.h> 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 #include <vm/vm.h> 49 50 #include <dev/ic/ispreg.h> 51 #include <dev/ic/ispvar.h> 52 #include <dev/ic/ispmbox.h> 53 #include <dev/microcode/isp/asm_pci.h> 54 55 #ifdef __alpha__ /* XXX */ 56 /* XXX XXX NEED REAL DMA MAPPING SUPPORT XXX XXX */ 57 extern vm_offset_t alpha_XXX_dmamap(vm_offset_t); 58 #undef vtophys 59 #define vtophys(va) alpha_XXX_dmamap((vm_offset_t) va) 60 #endif 61 #define KVTOPHYS(x) vtophys(x) 62 63 64 static u_int16_t isp_pci_rd_reg __P((struct ispsoftc *, int)); 65 static void isp_pci_wr_reg __P((struct ispsoftc *, int, u_int16_t)); 66 static vm_offset_t 67 isp_pci_mbxdma __P((struct ispsoftc *, vm_offset_t, u_int32_t)); 68 static int 69 isp_pci_dmasetup __P((struct ispsoftc *, struct scsi_xfer *, ispreq_t *, 70 u_int8_t *, u_int8_t)); 71 72 static void isp_pci_reset1 __P((struct ispsoftc *)); 73 74 static struct ispmdvec mdvec = { 75 isp_pci_rd_reg, 76 isp_pci_wr_reg, 77 isp_pci_mbxdma, 78 isp_pci_dmasetup, 79 NULL, 80 NULL, 81 isp_pci_reset1, 82 ISP_RISC_CODE, 83 ISP_CODE_LENGTH, 84 ISP_CODE_ORG, 85 /* BIU_PCI_CONF1_FIFO_16 | BIU_BURST_ENABLE */ 0 86 }; 87 88 #define PCI_QLOGIC_ISP \ 89 ((PCI_PRODUCT_QLOGIC_ISP1020 << 16) | PCI_VENDOR_QLOGIC) 90 91 #define IO_MAP_REG 0x10 92 #define MEM_MAP_REG 0x14 93 94 int isp_pci_prefer_io = 0; /* 1 -> map via I/O (patchable data) */ 95 96 97 #ifdef __BROKEN_INDIRECT_CONFIG 98 static int isp_pci_probe __P((struct device *, void *, void *)); 99 #else 100 static int isp_pci_probe __P((struct device *, struct cfdata *, void *)); 101 #endif 102 static void isp_pci_attach __P((struct device *, struct device *, void *)); 103 104 struct isp_pcisoftc { 105 struct ispsoftc pci_isp; 106 bus_space_tag_t pci_st; 107 bus_space_handle_t pci_sh; 108 void * pci_ih; 109 }; 110 111 struct cfattach isp_pci_ca = { 112 sizeof (struct isp_pcisoftc), isp_pci_probe, isp_pci_attach 113 }; 114 115 static int 116 isp_pci_probe(parent, match, aux) 117 struct device *parent; 118 #ifdef __BROKEN_INDIRECT_CONFIG 119 void *match, *aux; 120 #else 121 struct cfdata *match; 122 void *aux; 123 #endif 124 { 125 struct pci_attach_args *pa = aux; 126 127 if (pa->pa_id == PCI_QLOGIC_ISP) { 128 return (1); 129 } else { 130 return (0); 131 } 132 } 133 134 135 static void 136 isp_pci_attach(parent, self, aux) 137 struct device *parent, *self; 138 void *aux; 139 { 140 struct pci_attach_args *pa = aux; 141 struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) self; 142 bus_addr_t busbase; 143 bus_size_t bussize; 144 bus_space_tag_t st; 145 bus_space_handle_t sh; 146 pci_intr_handle_t ih; 147 const char *intrstr; 148 int cacheable; 149 150 if (isp_pci_prefer_io) { 151 if (pci_io_find(pa->pa_pc, pa->pa_tag, IO_MAP_REG, &busbase, 152 &bussize)) { 153 printf(": unable to find PCI I/O base\n"); 154 return; 155 } 156 st = pa->pa_iot; 157 if (bus_space_map(st, busbase, bussize, 0, &sh)) { 158 printf(": unable to map I/O registers\n"); 159 return; 160 } 161 } else { 162 if (pci_mem_find(pa->pa_pc, pa->pa_tag, MEM_MAP_REG, &busbase, 163 &bussize, &cacheable)) { 164 printf(": unable to find PCI memory base\n"); 165 return; 166 } 167 st = pa->pa_memt; 168 if (bus_space_map(st, busbase, bussize, 0, &sh)) { 169 printf(": unable to map memory registers\n"); 170 return; 171 } 172 } 173 printf("\n"); 174 175 pcs->pci_st = st; 176 pcs->pci_sh = sh; 177 pcs->pci_isp.isp_mdvec = &mdvec; 178 isp_reset(&pcs->pci_isp); 179 if (pcs->pci_isp.isp_state != ISP_RESETSTATE) { 180 return; 181 } 182 isp_init(&pcs->pci_isp); 183 if (pcs->pci_isp.isp_state != ISP_INITSTATE) { 184 isp_uninit(&pcs->pci_isp); 185 return; 186 } 187 188 if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin, 189 pa->pa_intrline, &ih)) { 190 printf("%s: couldn't map interrupt\n", pcs->pci_isp.isp_name); 191 isp_uninit(&pcs->pci_isp); 192 return; 193 } 194 195 intrstr = pci_intr_string(pa->pa_pc, ih); 196 if (intrstr == NULL) 197 intrstr = "<I dunno>"; 198 pcs->pci_ih = 199 pci_intr_establish(pa->pa_pc, ih, IPL_BIO, isp_intr, &pcs->pci_isp); 200 if (pcs->pci_ih == NULL) { 201 printf("%s: couldn't establish interrupt at %s\n", 202 pcs->pci_isp.isp_name, intrstr); 203 isp_uninit(&pcs->pci_isp); 204 return; 205 } 206 printf("%s: interrupting at %s\n", pcs->pci_isp.isp_name, intrstr); 207 208 /* 209 * Do Generic attach now. 210 */ 211 isp_attach(&pcs->pci_isp); 212 if (pcs->pci_isp.isp_state != ISP_RUNSTATE) { 213 isp_uninit(&pcs->pci_isp); 214 } 215 } 216 217 #define PCI_BIU_REGS_OFF 0x00 218 #define PCI_MBOX_REGS_OFF 0x70 219 #define PCI_SXP_REGS_OFF 0x80 220 #define PCI_RISC_REGS_OFF 0x80 221 222 static u_int16_t 223 isp_pci_rd_reg(isp, regoff) 224 struct ispsoftc *isp; 225 int regoff; 226 { 227 struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp; 228 int offset; 229 if ((regoff & BIU_BLOCK) != 0) { 230 offset = PCI_BIU_REGS_OFF; 231 } else if ((regoff & MBOX_BLOCK) != 0) { 232 offset = PCI_MBOX_REGS_OFF; 233 } else if ((regoff & SXP_BLOCK) != 0) { 234 offset = PCI_SXP_REGS_OFF; 235 /* 236 * XXX 237 */ 238 panic("SXP Registers not accessible yet!"); 239 } else { 240 offset = PCI_RISC_REGS_OFF; 241 } 242 regoff &= 0xff; 243 offset += regoff; 244 return bus_space_read_2(pcs->pci_st, pcs->pci_sh, offset); 245 } 246 247 static void 248 isp_pci_wr_reg(isp, regoff, val) 249 struct ispsoftc *isp; 250 int regoff; 251 u_int16_t val; 252 { 253 struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp; 254 int offset; 255 if ((regoff & BIU_BLOCK) != 0) { 256 offset = PCI_BIU_REGS_OFF; 257 } else if ((regoff & MBOX_BLOCK) != 0) { 258 offset = PCI_MBOX_REGS_OFF; 259 } else if ((regoff & SXP_BLOCK) != 0) { 260 offset = PCI_SXP_REGS_OFF; 261 /* 262 * XXX 263 */ 264 panic("SXP Registers not accessible yet!"); 265 } else { 266 offset = PCI_RISC_REGS_OFF; 267 } 268 regoff &= 0xff; 269 offset += regoff; 270 bus_space_write_2(pcs->pci_st, pcs->pci_sh, offset, val); 271 } 272 273 static vm_offset_t 274 isp_pci_mbxdma(isp, kva, len) 275 struct ispsoftc *isp; 276 vm_offset_t kva; 277 u_int32_t len; 278 { 279 vm_offset_t pg, start, s1; 280 281 start = KVTOPHYS(kva); 282 283 pg = kva + NBPG; 284 s1 = (start >> PGSHIFT) + 1; 285 len -= NBPG; 286 287 while ((int32_t)len > 0) { 288 if (s1 != (KVTOPHYS(pg) >> PGSHIFT)) { 289 printf("%s: mailboxes across noncontiguous pages\n", 290 isp->isp_name); 291 return ((vm_offset_t) 0); 292 } 293 len -= NBPG; 294 pg += NBPG; 295 s1++; 296 } 297 return (start); 298 } 299 300 /* 301 * TODO: reduce the number of segments by 302 * cchecking for adjacent physical page. 303 */ 304 305 static int 306 isp_pci_dmasetup(isp, xs, rq, iptrp, optr) 307 struct ispsoftc *isp; 308 struct scsi_xfer *xs; 309 ispreq_t *rq; 310 u_int8_t *iptrp; 311 u_int8_t optr; 312 { 313 ispcontreq_t *crq; 314 unsigned long thiskv, nextkv; 315 int datalen, amt; 316 317 if (xs->datalen == 0) { 318 rq->req_seg_count = 1; 319 rq->req_flags |= REQFLAG_DATA_IN; 320 return (0); 321 } 322 323 if (xs->flags & SCSI_DATA_IN) { 324 rq->req_flags |= REQFLAG_DATA_IN; 325 } else { 326 rq->req_flags |= REQFLAG_DATA_OUT; 327 } 328 datalen = xs->datalen; 329 thiskv = (unsigned long) xs->data; 330 331 while (datalen && rq->req_seg_count < ISP_RQDSEG) { 332 nextkv = (thiskv + NBPG) & ~(NBPG-1); 333 amt = nextkv - thiskv; 334 if (amt > datalen) 335 amt = datalen; 336 rq->req_dataseg[rq->req_seg_count].ds_count = amt; 337 rq->req_dataseg[rq->req_seg_count].ds_base = KVTOPHYS(thiskv); 338 #if 0 339 printf("%s: seg%d: 0x%lx..0x%lx\n", isp->isp_name, 340 rq->req_seg_count, thiskv, 341 thiskv + (unsigned long) amt); 342 #endif 343 datalen -= amt; 344 thiskv = nextkv; 345 rq->req_seg_count++; 346 } 347 348 if (datalen == 0) { 349 return (0); 350 } 351 352 do { 353 int seg; 354 crq = (ispcontreq_t *) &isp->isp_rquest[*iptrp][0]; 355 *iptrp = (*iptrp + 1) & (RQUEST_QUEUE_LEN - 1); 356 if (*iptrp == optr) { 357 printf("%s: Request Queue Overflow++\n", 358 isp->isp_name); 359 return (1); 360 } 361 rq->req_header.rqs_entry_count++; 362 bzero((void *)crq, sizeof (*crq)); 363 crq->req_header.rqs_entry_count = 1; 364 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 365 seg = 0; 366 while (datalen && seg < ISP_CDSEG) { 367 nextkv = (thiskv + NBPG) & ~(NBPG-1); 368 amt = nextkv - thiskv; 369 if (amt > datalen) 370 amt = datalen; 371 crq->req_dataseg[seg].ds_count = amt; 372 crq->req_dataseg[seg].ds_base = KVTOPHYS(thiskv); 373 #if 0 374 printf("%s: Cont%d seg%d: 0x%lx..0x%lx\n", 375 isp->isp_name, rq->req_header.rqs_entry_count, 376 seg, thiskv, thiskv + (unsigned long) amt); 377 #endif 378 datalen -= amt; 379 thiskv = nextkv; 380 rq->req_seg_count++; 381 seg++; 382 } 383 } while (datalen > 0); 384 return (0); 385 } 386 387 static void 388 isp_pci_reset1(isp) 389 struct ispsoftc *isp; 390 { 391 /* Make sure the BIOS is disabled */ 392 isp_pci_wr_reg(isp, HCCR, PCI_HCCR_CMD_BIOS); 393 } 394
Indexes created Mon Sep 29 21:09:56 GMT 2025