1 /* $NetBSD: mpt_pci.c,v 1.1 2003/04/16 22:03:01 thorpej 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 <dev/ic/mpt.h> /* pulls in all headers */ 45 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pcivar.h> 48 #include <dev/pci/pcidevs.h> 49 50 #define MPT_PCI_MMBA (PCI_MAPREG_START+0x04) 51 52 struct mpt_pci_softc { 53 mpt_softc_t sc_mpt; 54 55 pci_chipset_tag_t sc_pc; 56 pcitag_t sc_tag; 57 58 void *sc_ih; 59 60 /* Saved volatile PCI configuration registers. */ 61 pcireg_t sc_pci_csr; 62 pcireg_t sc_pci_bhlc; 63 pcireg_t sc_pci_io_bar; 64 pcireg_t sc_pci_mem0_bar[2]; 65 pcireg_t sc_pci_mem1_bar[2]; 66 pcireg_t sc_pci_rom_bar; 67 pcireg_t sc_pci_int; 68 pcireg_t sc_pci_pmcsr; 69 }; 70 71 static void mpt_pci_link_peer(mpt_softc_t *); 72 static void mpt_pci_read_config_regs(mpt_softc_t *); 73 static void mpt_pci_set_config_regs(mpt_softc_t *); 74 75 #define MPP_F_FC 0x01 /* Fibre Channel adapter */ 76 #define MPP_F_DUAL 0x02 /* Dual port adapter */ 77 78 static const struct mpt_pci_product { 79 pci_vendor_id_t mpp_vendor; 80 pci_product_id_t mpp_product; 81 int mpp_flags; 82 const char *mpp_name; 83 } mpt_pci_products[] = { 84 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_1030, 85 MPP_F_DUAL, 86 "LSI Logic 53c1030 Ultra320 SCSI" }, 87 88 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC909, 89 MPP_F_FC, 90 "LSI Logic FC909 FC Adapter" }, 91 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC909A, 92 MPP_F_FC, 93 "LSI Logic FC909A FC Adapter" }, 94 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC929, 95 MPP_F_FC | MPP_F_DUAL, 96 "LSI Logic FC929 FC Adapter" }, 97 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC929_1, 98 MPP_F_FC | MPP_F_DUAL, 99 "LSI Logic FC929 FC Adapter" }, 100 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC919, 101 MPP_F_FC, 102 "LSI Logic FC919 FC Adapter" }, 103 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_FC919_1, 104 MPP_F_FC, 105 "LSI Logic FC919 FC Adapter" }, 106 107 { 0, 0, 108 0, 109 NULL }, 110 }; 111 112 static const struct mpt_pci_product * 113 mpt_pci_lookup(const struct pci_attach_args *pa) 114 { 115 const struct mpt_pci_product *mpp; 116 117 for (mpp = mpt_pci_products; mpp->mpp_name != NULL; mpp++) { 118 if (PCI_VENDOR(pa->pa_id) == mpp->mpp_vendor && 119 PCI_PRODUCT(pa->pa_id) == mpp->mpp_product) 120 return (mpp); 121 } 122 return (NULL); 123 } 124 125 static int 126 mpt_pci_match(struct device *parent, struct cfdata *cf, void *aux) 127 { 128 struct pci_attach_args *pa = aux; 129 130 if (mpt_pci_lookup(pa) != NULL) 131 return (1); 132 133 return (0); 134 } 135 136 static void 137 mpt_pci_attach(struct device *parent, struct device *self, void *aux) 138 { 139 struct mpt_pci_softc *psc = (void *) self; 140 mpt_softc_t *mpt = &psc->sc_mpt; 141 struct pci_attach_args *pa = aux; 142 const struct mpt_pci_product *mpp; 143 pci_intr_handle_t ih; 144 const char *intrstr; 145 pcireg_t reg, memtype; 146 bus_space_tag_t memt; 147 bus_space_handle_t memh; 148 int memh_valid; 149 150 mpp = mpt_pci_lookup(pa); 151 if (mpp == NULL) { 152 printf("\n"); 153 panic("mpt_pci_attach"); 154 } 155 156 if (mpp->mpp_flags & MPP_F_FC) { 157 mpt->is_fc = 1; 158 aprint_naive(": Fibre Channel controller\n"); 159 } else 160 aprint_naive(": SCSI controller\n"); 161 aprint_normal(": %s\n", mpp->mpp_name); 162 163 psc->sc_pc = pa->pa_pc; 164 psc->sc_tag = pa->pa_tag; 165 166 mpt->sc_dmat = pa->pa_dmat; 167 mpt->sc_set_config_regs = mpt_pci_set_config_regs; 168 169 /* 170 * Map the device. 171 */ 172 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, MPT_PCI_MMBA); 173 switch (memtype) { 174 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: 175 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: 176 memh_valid = (pci_mapreg_map(pa, MPT_PCI_MMBA, 177 memtype, 0, &memt, &memh, NULL, NULL) == 0); 178 break; 179 180 default: 181 memh_valid = 0; 182 } 183 184 if (memh_valid) { 185 mpt->sc_st = memt; 186 mpt->sc_sh = memh; 187 } else { 188 aprint_error("%s: unable to map device registers\n", 189 mpt->sc_dev.dv_xname); 190 return; 191 } 192 193 /* 194 * Make sure the PCI command register is properly configured. 195 */ 196 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 197 reg |= PCI_COMMAND_MASTER_ENABLE; 198 /* XXX PCI_COMMAND_INVALIDATE_ENABLE */ 199 /* XXX PCI_COMMAND_PARITY_ENABLE */ 200 /* XXX PCI_COMMAND_SERR_ENABLE */ 201 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg); 202 203 /* 204 * Ensure that the ROM is diabled. 205 */ 206 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM); 207 reg &= ~1; 208 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM, reg); 209 210 /* 211 * Map and establish our interrupt. 212 */ 213 if (pci_intr_map(pa, &ih) != 0) { 214 aprint_error("%s: unable to map interrupt\n", 215 mpt->sc_dev.dv_xname); 216 return; 217 } 218 intrstr = pci_intr_string(pa->pa_pc, ih); 219 psc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, mpt_intr, mpt); 220 if (psc->sc_ih == NULL) { 221 aprint_error("%s: unable to establish interrupt", 222 mpt->sc_dev.dv_xname); 223 if (intrstr != NULL) 224 aprint_normal(" at %s", intrstr); 225 aprint_normal("\n"); 226 return; 227 } 228 aprint_normal("%s: interrupting at %s\n", mpt->sc_dev.dv_xname, 229 intrstr); 230 231 /* Disable interrupts on the part. */ 232 mpt_disable_ints(mpt); 233 234 /* Allocate DMA memory. */ 235 if (mpt_dma_mem_alloc(mpt) != 0) { 236 aprint_error("%s: unable to allocate DMA memory\n", 237 mpt->sc_dev.dv_xname); 238 return; 239 } 240 241 /* 242 * Save the PCI config register values. 243 * 244 * Hard resets are known to screw up the BAR for diagnostic 245 * memory accesses (Mem1). 246 * 247 * Using Mem1 is know to make the chip stop responding to 248 * configuration cycles, so we need to save it now. 249 */ 250 mpt_pci_read_config_regs(mpt); 251 252 /* 253 * If we're a dual-port adapter, try to find our peer. We 254 * need to fix his PCI config registers, too. 255 */ 256 if (mpp->mpp_flags & MPP_F_DUAL) 257 mpt_pci_link_peer(mpt); 258 259 /* Initialize the hardware. */ 260 if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) { 261 /* Error message already printed. */ 262 return; 263 } 264 265 /* Attach to scsipi. */ 266 mpt_scsipi_attach(mpt); 267 } 268 269 CFATTACH_DECL(mpt_pci, sizeof(struct mpt_pci_softc), 270 mpt_pci_match, mpt_pci_attach, NULL, NULL); 271 272 /* 273 * Find and remember our peer PCI function on a dual-port device. 274 */ 275 static void 276 mpt_pci_link_peer(mpt_softc_t *mpt) 277 { 278 extern struct cfdriver mpt_cd; 279 280 struct mpt_pci_softc *peer_psc, *psc = (void *) mpt; 281 struct device *dev; 282 int unit, b, d, f, peer_b, peer_d, peer_f; 283 284 pci_decompose_tag(psc->sc_pc, psc->sc_tag, &b, &d, &f); 285 286 for (unit = 0; unit < mpt_cd.cd_ndevs; unit++) { 287 if (unit == mpt->sc_dev.dv_unit) 288 continue; 289 dev = device_lookup(&mpt_cd, unit); 290 if (dev == NULL) 291 continue; 292 if (dev->dv_cfattach != &mpt_pci_ca) 293 continue; 294 peer_psc = (void *) dev; 295 if (peer_psc->sc_pc != psc->sc_pc) 296 continue; 297 pci_decompose_tag(peer_psc->sc_pc, peer_psc->sc_tag, 298 &peer_b, &peer_d, &peer_f); 299 if (peer_b == b && peer_d == d) { 300 if (mpt->verbose) 301 mpt_prt(mpt, "linking with peer: %s", 302 peer_psc->sc_mpt.sc_dev.dv_xname); 303 mpt->mpt2 = (mpt_softc_t *) peer_psc; 304 peer_psc->sc_mpt.mpt2 = mpt; 305 return; 306 } 307 } 308 } 309 310 /* 311 * Save the volatile PCI configuration registers. 312 */ 313 static void 314 mpt_pci_read_config_regs(mpt_softc_t *mpt) 315 { 316 struct mpt_pci_softc *psc = (void *) mpt; 317 318 psc->sc_pci_csr = pci_conf_read(psc->sc_pc, psc->sc_tag, 319 PCI_COMMAND_STATUS_REG); 320 psc->sc_pci_bhlc = pci_conf_read(psc->sc_pc, psc->sc_tag, 321 PCI_BHLC_REG); 322 psc->sc_pci_io_bar = pci_conf_read(psc->sc_pc, psc->sc_tag, 323 PCI_MAPREG_START); 324 psc->sc_pci_mem0_bar[0] = pci_conf_read(psc->sc_pc, psc->sc_tag, 325 PCI_MAPREG_START+0x04); 326 psc->sc_pci_mem0_bar[1] = pci_conf_read(psc->sc_pc, psc->sc_tag, 327 PCI_MAPREG_START+0x08); 328 psc->sc_pci_mem1_bar[0] = pci_conf_read(psc->sc_pc, psc->sc_tag, 329 PCI_MAPREG_START+0x0c); 330 psc->sc_pci_mem1_bar[1] = pci_conf_read(psc->sc_pc, psc->sc_tag, 331 PCI_MAPREG_START+0x10); 332 psc->sc_pci_rom_bar = pci_conf_read(psc->sc_pc, psc->sc_tag, 333 PCI_MAPREG_ROM); 334 psc->sc_pci_int = pci_conf_read(psc->sc_pc, psc->sc_tag, 335 PCI_INTERRUPT_REG); 336 psc->sc_pci_pmcsr = pci_conf_read(psc->sc_pc, psc->sc_tag, 0x44); 337 } 338 339 /* 340 * Restore the volatile PCI configuration registers. 341 */ 342 static void 343 mpt_pci_set_config_regs(mpt_softc_t *mpt) 344 { 345 struct mpt_pci_softc *psc = (void *) mpt; 346 347 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_COMMAND_STATUS_REG, 348 psc->sc_pci_csr); 349 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_BHLC_REG, 350 psc->sc_pci_bhlc); 351 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START, 352 psc->sc_pci_io_bar); 353 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x04, 354 psc->sc_pci_mem0_bar[0]); 355 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x08, 356 psc->sc_pci_mem0_bar[1]); 357 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x0c, 358 psc->sc_pci_mem1_bar[0]); 359 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x10, 360 psc->sc_pci_mem1_bar[1]); 361 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_ROM, 362 psc->sc_pci_rom_bar); 363 pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_INTERRUPT_REG, 364 psc->sc_pci_int); 365 pci_conf_write(psc->sc_pc, psc->sc_tag, 0x44, psc->sc_pci_pmcsr); 366 } 367