mpt_pci.c revision 1.3
1 /* $NetBSD: mpt_pci.c,v 1.3 2004/09/18 08:52:50 martin Exp $ */ 2 3 /* 4 * Copyright (c) 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * mpt_pci.c: 40 * 41 * NetBSD PCI-specific routines for LSI Fusion adapters. 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: mpt_pci.c,v 1.3 2004/09/18 08:52:50 martin Exp $"); 46 47 #include <dev/ic/mpt.h> /* pulls in all headers */ 48 49 #include <dev/pci/pcireg.h> 50 #include <dev/pci/pcivar.h> 51 #include <dev/pci/pcidevs.h> 52 53 #define MPT_PCI_MMBA (PCI_MAPREG_START+0x04) 54 55 struct mpt_pci_softc { 56 mpt_softc_t sc_mpt; 57 58 pci_chipset_tag_t sc_pc; 59 pcitag_t sc_tag; 60 61 void *sc_ih; 62 63 /* Saved volatile PCI configuration registers. */ 64 pcireg_t sc_pci_csr; 65 pcireg_t sc_pci_bhlc; 66 pcireg_t sc_pci_io_bar; 67 pcireg_t sc_pci_mem0_bar[2]; 68 pcireg_t sc_pci_mem1_bar[2]; 69 pcireg_t sc_pci_rom_bar; 70 pcireg_t sc_pci_int; 71 pcireg_t sc_pci_pmcsr; 72 }; 73 74 static void mpt_pci_link_peer(mpt_softc_t *); 75 static void mpt_pci_read_config_regs(mpt_softc_t *); 76 static void mpt_pci_set_config_regs(mpt_softc_t *); 77 78 #define MPP_F_FC 0x01 /* Fibre Channel adapter */ 79 #define MPP_F_DUAL 0x02 /* Dual port adapter */ 80 81 static const struct mpt_pci_product { 82 pci_vendor_id_t mpp_vendor; 83 pci_product_id_t mpp_product; 84 int mpp_flags; 85 const char *mpp_name; 86 } mpt_pci_products[] = { 87 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_1030, 88 MPP_F_DUAL, 89 "LSI Logic 53c1030 Ultra320 SCSI" }, 90 91 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC909, 92 MPP_F_FC, 93 "LSI Logic FC909 FC Adapter" }, 94 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC909A, 95 MPP_F_FC, 96 "LSI Logic FC909A FC Adapter" }, 97 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC929, 98 MPP_F_FC | MPP_F_DUAL, 99 "LSI Logic FC929 FC Adapter" }, 100 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC929_1, 101 MPP_F_FC | MPP_F_DUAL, 102 "LSI Logic FC929 FC Adapter" }, 103 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC919, 104 MPP_F_FC, 105 "LSI Logic FC919 FC Adapter" }, 106 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC919_1, 107 MPP_F_FC, 108 "LSI Logic FC919 FC Adapter" }, 109 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC929X, 110 MPP_F_FC | MPP_F_DUAL, 111 "LSI Logic FC929X FC Adapter" }, 112 113 { 0, 0, 114 0, 115 NULL }, 116 }; 117 118 static const struct mpt_pci_product * 119 mpt_pci_lookup(const struct pci_attach_args *pa) 120 { 121 const struct mpt_pci_product *mpp; 122 123 for (mpp = mpt_pci_products; mpp->mpp_name != NULL; mpp++) { 124 if (PCI_VENDOR(pa->pa_id) == mpp->mpp_vendor && 125 PCI_PRODUCT(pa->pa_id) == mpp->mpp_product) 126 return (mpp); 127 } 128 return (NULL); 129 } 130 131 static int 132 mpt_pci_match(struct device *parent, struct cfdata *cf, void *aux) 133 { 134 struct pci_attach_args *pa = aux; 135 136 if (mpt_pci_lookup(pa) != NULL) 137 return (1); 138 139 return (0); 140 } 141 142 static void 143 mpt_pci_attach(struct device *parent, struct device *self, void *aux) 144 { 145 struct mpt_pci_softc *psc = (void *) self; 146 mpt_softc_t *mpt = &psc->sc_mpt; 147 struct pci_attach_args *pa = aux; 148 const struct mpt_pci_product *mpp; 149 pci_intr_handle_t ih; 150 const char *intrstr; 151 pcireg_t reg, memtype; 152 bus_space_tag_t memt; 153 bus_space_handle_t memh; 154 int memh_valid; 155 156 mpp = mpt_pci_lookup(pa); 157 if (mpp == NULL) { 158 printf("\n"); 159 panic("mpt_pci_attach"); 160 } 161 162 if (mpp->mpp_flags & MPP_F_FC) { 163 mpt->is_fc = 1; 164 aprint_naive(": Fibre Channel controller\n"); 165 } else 166 aprint_naive(": SCSI controller\n"); 167 aprint_normal(": %s\n", mpp->mpp_name); 168 169 psc->sc_pc = pa->pa_pc; 170 psc->sc_tag = pa->pa_tag; 171 172 mpt->sc_dmat = pa->pa_dmat; 173 mpt->sc_set_config_regs = mpt_pci_set_config_regs; 174 175 /* 176 * Map the device. 177 */ 178 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, MPT_PCI_MMBA); 179 switch (memtype) { 180 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: 181 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: 182 memh_valid = (pci_mapreg_map(pa, MPT_PCI_MMBA, 183 memtype, 0, &memt, &memh, NULL, NULL) == 0); 184 break; 185 186 default: 187 memh_valid = 0; 188 } 189 190 if (memh_valid) { 191 mpt->sc_st = memt; 192 mpt->sc_sh = memh; 193 } else { 194 aprint_error("%s: unable to map device registers\n", 195 mpt->sc_dev.dv_xname); 196 return; 197 } 198 199 /* 200 * Make sure the PCI command register is properly configured. 201 */ 202 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 203 reg |= PCI_COMMAND_MASTER_ENABLE; 204 /* XXX PCI_COMMAND_INVALIDATE_ENABLE */ 205 /* XXX PCI_COMMAND_PARITY_ENABLE */ 206 /* XXX PCI_COMMAND_SERR_ENABLE */ 207 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg); 208 209 /* 210 * Ensure that the ROM is diabled. 211 */ 212 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM); 213 reg &= ~1; 214 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM, reg); 215 216 /* 217 * Map and establish our interrupt. 218 */ 219 if (pci_intr_map(pa, &ih) != 0) { 220 aprint_error("%s: unable to map interrupt\n", 221 mpt->sc_dev.dv_xname); 222 return; 223 } 224 intrstr = pci_intr_string(pa->pa_pc, ih); 225 psc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, mpt_intr, mpt); 226 if (psc->sc_ih == NULL) { 227 aprint_error("%s: unable to establish interrupt", 228 mpt->sc_dev.dv_xname); 229 if (intrstr != NULL) 230 aprint_normal(" at %s", intrstr); 231 aprint_normal("\n"); 232 return; 233 } 234 aprint_normal("%s: interrupting at %s\n", mpt->sc_dev.dv_xname, 235 intrstr); 236 237 /* Disable interrupts on the part. */ 238 mpt_disable_ints(mpt); 239 240 /* Allocate DMA memory. */ 241 if (mpt_dma_mem_alloc(mpt) != 0) { 242 aprint_error("%s: unable to allocate DMA memory\n", 243 mpt->sc_dev.dv_xname); 244 return; 245 } 246 247 /* 248 * Save the PCI config register values. 249 * 250 * Hard resets are known to screw up the BAR for diagnostic 251 * memory accesses (Mem1). 252 * 253 * Using Mem1 is know to make the chip stop responding to 254 * configuration cycles, so we need to save it now. 255 */ 256 mpt_pci_read_config_regs(mpt); 257 258 /* 259 * If we're a dual-port adapter, try to find our peer. We 260 * need to fix his PCI config registers, too. 261 */ 262 if (mpp->mpp_flags & MPP_F_DUAL) 263 mpt_pci_link_peer(mpt); 264 265 /* Initialize the hardware. */ 266 if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) { 267 /* Error message already printed. */ 268 return; 269 } 270 271 /* Attach to scsipi. */ 272 mpt_scsipi_attach(mpt); 273 } 274 275 CFATTACH_DECL(mpt_pci, sizeof(struct mpt_pci_softc), 276 mpt_pci_match, mpt_pci_attach, NULL, NULL); 277 278 /* 279 * Find and remember our peer PCI function on a dual-port device. 280 */ 281 static void 282 mpt_pci_link_peer(mpt_softc_t *mpt) 283 { 284 extern struct cfdriver mpt_cd; 285 286 struct mpt_pci_softc *peer_psc, *psc = (void *) mpt; 287 struct device *dev; 288 int unit, b, d, f, peer_b, peer_d, peer_f; 289 290 pci_decompose_tag(psc->sc_pc, psc->sc_tag, &b, &d, &f); 291 292 for (unit = 0; unit < mpt_cd.cd_ndevs; unit++) { 293 if (unit == mpt->sc_dev.dv_unit) 294 continue; 295 dev = device_lookup(&mpt_cd, unit); 296 if (dev == NULL) 297 continue; 298 if (dev->dv_cfattach != &mpt_pci_ca) 299 continue; 300 peer_psc = (void *) dev; 301 if (peer_psc->sc_pc != psc->sc_pc) 302 continue; 303 pci_decompose_tag(peer_psc->sc_pc, peer_psc->sc_tag, 304 &peer_b, &peer_d, &peer_f); 305 if (peer_b == b && peer_d == d) { 306 if (mpt->verbose) 307 mpt_prt(mpt, "linking with peer: %s", 308 peer_psc->sc_mpt.sc_dev.dv_xname); 309 mpt->mpt2 = (mpt_softc_t *) peer_psc; 310 peer_psc->sc_mpt.mpt2 = mpt; 311 return; 312 } 313 } 314 } 315 316 /* 317 * Save the volatile PCI configuration registers. 318 */ 319 static void 320 mpt_pci_read_config_regs(mpt_softc_t *mpt) 321 { 322 struct mpt_pci_softc *psc = (void *) mpt; 323 324 psc->sc_pci_csr = pci_conf_read(psc->sc_pc, psc->sc_tag, 325 PCI_COMMAND_STATUS_REG); 326 psc->sc_pci_bhlc = pci_conf_read(psc->sc_pc, psc->sc_tag, 327 PCI_BHLC_REG); 328 psc->sc_pci_io_bar = pci_conf_read(psc->sc_pc, psc->sc_tag, 329 PCI_MAPREG_START); 330 psc->sc_pci_mem0_bar[0] = pci_conf_read(psc->sc_pc, psc->sc_tag, 331 PCI_MAPREG_START+0x04); 332 psc->sc_pci_mem0_bar[1] = pci_conf_read(psc->sc_pc, psc->sc_tag, 333 PCI_MAPREG_START+0x08); 334 psc->sc_pci_mem1_bar[0] = pci_conf_read(psc->sc_pc, psc->sc_tag, 335 PCI_MAPREG_START+0x0c); 336 psc->sc_pci_mem1_bar[1] = pci_conf_read(psc->sc_pc, psc->sc_tag, 337 PCI_MAPREG_START+0x10); 338 psc->sc_pci_rom_bar = pci_conf_read(psc->sc_pc, psc->sc_tag, 339 PCI_MAPREG_ROM); 340 psc->sc_pci_int = pci_conf_read(psc->sc_pc, psc->sc_tag, 341 PCI_INTERRUPT_REG); 342 psc->sc_pci_pmcsr = pci_conf_read(psc->sc_pc, psc->sc_tag, 0x44); 343 } 344 345 /* 346 * Restore the volatile PCI configuration registers. 347 */ 348 static void 349 mpt_pci_set_config_regs(mpt_softc_t *mpt) 350 { 351 struct mpt_pci_softc *psc = (void *) mpt; 352 353 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_COMMAND_STATUS_REG, 354 psc->sc_pci_csr); 355 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_BHLC_REG, 356 psc->sc_pci_bhlc); 357 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START, 358 psc->sc_pci_io_bar); 359 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x04, 360 psc->sc_pci_mem0_bar[0]); 361 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x08, 362 psc->sc_pci_mem0_bar[1]); 363 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x0c, 364 psc->sc_pci_mem1_bar[0]); 365 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x10, 366 psc->sc_pci_mem1_bar[1]); 367 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_ROM, 368 psc->sc_pci_rom_bar); 369 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_INTERRUPT_REG, 370 psc->sc_pci_int); 371 pci_conf_write(psc->sc_pc, psc->sc_tag, 0x44, psc->sc_pci_pmcsr); 372 } 373
Indexes created Mon Sep 22 13:09:51 GMT 2025