Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/cac_pci.c
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1 /* $NetBSD: cac_pci.c,v 1.17 2003/01/31 00:07:40 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 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 /* 40 * PCI front-end for cac(4) driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: cac_pci.c,v 1.17 2003/01/31 00:07:40 thorpej Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/device.h> 50 #include <sys/queue.h> 51 52 #include <machine/endian.h> 53 #include <machine/bus.h> 54 55 #include <dev/pci/pcidevs.h> 56 #include <dev/pci/pcivar.h> 57 58 #include <dev/ic/cacreg.h> 59 #include <dev/ic/cacvar.h> 60 61 void cac_pci_attach(struct device *, struct device *, void *); 62 const struct cac_pci_type *cac_pci_findtype(struct pci_attach_args *); 63 int cac_pci_match(struct device *, struct cfdata *, void *); 64 65 struct cac_ccb *cac_pci_l0_completed(struct cac_softc *); 66 int cac_pci_l0_fifo_full(struct cac_softc *); 67 void cac_pci_l0_intr_enable(struct cac_softc *, int); 68 int cac_pci_l0_intr_pending(struct cac_softc *); 69 void cac_pci_l0_submit(struct cac_softc *, struct cac_ccb *); 70 71 CFATTACH_DECL(cac_pci, sizeof(struct cac_softc), 72 cac_pci_match, cac_pci_attach, NULL, NULL); 73 74 static const struct cac_linkage cac_pci_l0 = { 75 cac_pci_l0_completed, 76 cac_pci_l0_fifo_full, 77 cac_pci_l0_intr_enable, 78 cac_pci_l0_intr_pending, 79 cac_pci_l0_submit 80 }; 81 82 #define CT_STARTFW 0x01 /* Need to start controller firmware */ 83 84 struct cac_pci_type { 85 int ct_subsysid; 86 int ct_flags; 87 const struct cac_linkage *ct_linkage; 88 const char *ct_typestr; 89 } static const cac_pci_type[] = { 90 { 0x40300e11, 0, &cac_l0, "SMART-2/P" }, 91 { 0x40310e11, 0, &cac_l0, "SMART-2SL" }, 92 { 0x40320e11, 0, &cac_l0, "Smart Array 3200" }, 93 { 0x40330e11, 0, &cac_l0, "Smart Array 3100ES" }, 94 { 0x40340e11, 0, &cac_l0, "Smart Array 221" }, 95 { 0x40400e11, CT_STARTFW, &cac_pci_l0, "Integrated Array" }, 96 { 0x40480e11, CT_STARTFW, &cac_pci_l0, "RAID LC2" }, 97 { 0x40500e11, 0, &cac_pci_l0, "Smart Array 4200" }, 98 { 0x40510e11, 0, &cac_pci_l0, "Smart Array 4200ES" }, 99 { 0x40580e11, 0, &cac_pci_l0, "Smart Array 431" }, 100 }; 101 102 struct cac_pci_product { 103 u_short cp_vendor; 104 u_short cp_product; 105 } static const cac_pci_product[] = { 106 { PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_SMART2P }, 107 { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21554 }, 108 { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_1510 }, 109 }; 110 111 const struct cac_pci_type * 112 cac_pci_findtype(struct pci_attach_args *pa) 113 { 114 const struct cac_pci_type *ct; 115 const struct cac_pci_product *cp; 116 pcireg_t subsysid; 117 int i; 118 119 cp = cac_pci_product; 120 i = 0; 121 while (i < sizeof(cac_pci_product) / sizeof(cac_pci_product[0])) { 122 if (PCI_VENDOR(pa->pa_id) == cp->cp_vendor && 123 PCI_PRODUCT(pa->pa_id) == cp->cp_product) 124 break; 125 cp++; 126 i++; 127 } 128 if (i == sizeof(cac_pci_product) / sizeof(cac_pci_product[0])) 129 return (NULL); 130 131 subsysid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 132 ct = cac_pci_type; 133 i = 0; 134 while (i < sizeof(cac_pci_type) / sizeof(cac_pci_type[0])) { 135 if (subsysid == ct->ct_subsysid) 136 break; 137 ct++; 138 i++; 139 } 140 if (i == sizeof(cac_pci_type) / sizeof(cac_pci_type[0])) 141 return (NULL); 142 143 return (ct); 144 } 145 146 int 147 cac_pci_match(struct device *parent, struct cfdata *match, void *aux) 148 { 149 150 return (cac_pci_findtype(aux) != NULL); 151 } 152 153 void 154 cac_pci_attach(struct device *parent, struct device *self, void *aux) 155 { 156 struct pci_attach_args *pa; 157 const struct cac_pci_type *ct; 158 struct cac_softc *sc; 159 pci_chipset_tag_t pc; 160 pci_intr_handle_t ih; 161 const char *intrstr; 162 pcireg_t reg; 163 int memr, ior, i; 164 165 aprint_naive(": RAID controller\n"); 166 167 sc = (struct cac_softc *)self; 168 pa = (struct pci_attach_args *)aux; 169 pc = pa->pa_pc; 170 ct = cac_pci_findtype(pa); 171 172 /* 173 * Map the PCI register window. 174 */ 175 memr = -1; 176 ior = -1; 177 178 for (i = 0x10; i <= 0x14; i += 4) { 179 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, i); 180 181 if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) { 182 if (ior == -1 && PCI_MAPREG_IO_SIZE(reg) != 0) 183 ior = i; 184 } else { 185 if (memr == -1 && PCI_MAPREG_MEM_SIZE(reg) != 0) 186 memr = i; 187 } 188 } 189 190 if (memr != -1) { 191 if (pci_mapreg_map(pa, memr, PCI_MAPREG_TYPE_MEM, 0, 192 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) 193 memr = -1; 194 else 195 ior = -1; 196 } 197 if (ior != -1) 198 if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0, 199 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) 200 ior = -1; 201 if (memr == -1 && ior == -1) { 202 aprint_error("%s: can't map i/o or memory space\n", 203 self->dv_xname); 204 return; 205 } 206 207 sc->sc_dmat = pa->pa_dmat; 208 209 /* Enable the device. */ 210 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 211 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 212 reg | PCI_COMMAND_MASTER_ENABLE); 213 214 /* Map and establish the interrupt. */ 215 if (pci_intr_map(pa, &ih)) { 216 aprint_error("can't map interrupt\n"); 217 return; 218 } 219 intrstr = pci_intr_string(pc, ih); 220 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, cac_intr, sc); 221 if (sc->sc_ih == NULL) { 222 aprint_error("can't establish interrupt"); 223 if (intrstr != NULL) 224 aprint_normal(" at %s", intrstr); 225 aprint_normal("\n"); 226 return; 227 } 228 229 aprint_normal(": Compaq %s\n", ct->ct_typestr); 230 231 /* Now attach to the bus-independent code. */ 232 memcpy(&sc->sc_cl, ct->ct_linkage, sizeof(sc->sc_cl)); 233 cac_init(sc, intrstr, (ct->ct_flags & CT_STARTFW) != 0); 234 } 235 236 void 237 cac_pci_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 238 { 239 240 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs, 241 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 242 cac_outl(sc, CAC_42REG_CMD_FIFO, ccb->ccb_paddr); 243 } 244 245 struct cac_ccb * 246 cac_pci_l0_completed(struct cac_softc *sc) 247 { 248 struct cac_ccb *ccb; 249 u_int32_t off; 250 251 if ((off = cac_inl(sc, CAC_42REG_DONE_FIFO)) == 0xffffffffU) 252 return (NULL); 253 254 cac_outl(sc, CAC_42REG_DONE_FIFO, 0); 255 256 if ((off & 3) != 0) 257 printf("%s: failed command list returned: %lx\n", 258 sc->sc_dv.dv_xname, (long)off); 259 260 off = (off & ~3) - sc->sc_ccbs_paddr; 261 ccb = (struct cac_ccb *)(sc->sc_ccbs + off); 262 263 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 264 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 265 266 return (ccb); 267 } 268 269 int 270 cac_pci_l0_intr_pending(struct cac_softc *sc) 271 { 272 273 return ((cac_inl(sc, CAC_42REG_STATUS) & CAC_42_EXTINT) != 0); 274 } 275 276 void 277 cac_pci_l0_intr_enable(struct cac_softc *sc, int state) 278 { 279 280 cac_outl(sc, CAC_42REG_INTR_MASK, (state ? 0 : 8)); /* XXX */ 281 } 282 283 int 284 cac_pci_l0_fifo_full(struct cac_softc *sc) 285 { 286 287 return (cac_inl(sc, CAC_42REG_CMD_FIFO) != 0); 288 }
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