njs_pci.c revision 1.7
1 /* $NetBSD: njs_pci.c,v 1.7 2008/04/10 19:13:37 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by ITOH Yasufumi. 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 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: njs_pci.c,v 1.7 2008/04/10 19:13:37 cegger Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 47 #include <sys/bus.h> 48 #include <sys/intr.h> 49 50 #include <dev/scsipi/scsi_all.h> 51 #include <dev/scsipi/scsipi_all.h> 52 #include <dev/scsipi/scsiconf.h> 53 54 #include <dev/pci/pcivar.h> 55 #include <dev/pci/pcidevs.h> 56 57 #include <dev/ic/ninjascsi32reg.h> 58 #include <dev/ic/ninjascsi32var.h> 59 60 #define NJSC32_PCI_BASEADDR_IO PCI_MAPREG_START 61 #define NJSC32_PCI_BASEADDR_MEM (PCI_MAPREG_START + 4) 62 63 struct njsc32_pci_softc { 64 struct njsc32_softc sc_njsc32; 65 66 pci_chipset_tag_t sc_pc; 67 68 bus_space_handle_t sc_regmaph; 69 bus_size_t sc_regmap_size; 70 }; 71 72 static int njs_pci_match(struct device *, struct cfdata *, void *); 73 static void njs_pci_attach(struct device *, struct device *, void *); 74 static int njs_pci_detach(struct device *, int); 75 76 CFATTACH_DECL(njs_pci, sizeof(struct njsc32_pci_softc), 77 njs_pci_match, njs_pci_attach, njs_pci_detach, NULL); 78 79 static const struct njsc32_pci_product { 80 pci_vendor_id_t p_vendor; 81 pci_product_id_t p_product; 82 njsc32_model_t p_model; 83 int p_clk; /* one of NJSC32_CLK_* */ 84 } njsc32_pci_products[] = { 85 { PCI_VENDOR_WORKBIT, PCI_PRODUCT_WORKBIT_NJSC32UDE_IODATA, 86 NJSC32_MODEL_32UDE | NJSC32_FLAG_DUALEDGE, NJSC32_CLK_40M }, 87 { PCI_VENDOR_WORKBIT, PCI_PRODUCT_WORKBIT_NJSC32UDE_LOGITEC, 88 NJSC32_MODEL_32UDE | NJSC32_FLAG_DUALEDGE, NJSC32_CLK_40M }, 89 { PCI_VENDOR_WORKBIT, PCI_PRODUCT_WORKBIT_NJSC32UDE_LOGITEC2, 90 NJSC32_MODEL_32UDE | NJSC32_FLAG_DUALEDGE, NJSC32_CLK_40M }, 91 { PCI_VENDOR_WORKBIT, PCI_PRODUCT_WORKBIT_NJSC32UDE_BUFFALO, 92 NJSC32_MODEL_32UDE | NJSC32_FLAG_DUALEDGE, NJSC32_CLK_40M }, 93 94 { 0, 0, 95 NJSC32_MODEL_INVALID, 0 }, 96 }; 97 98 static const struct njsc32_pci_product * 99 njs_pci_lookup(const struct pci_attach_args *pa) 100 { 101 const struct njsc32_pci_product *p; 102 103 for (p = njsc32_pci_products; 104 p->p_model != NJSC32_MODEL_INVALID; p++) { 105 if (PCI_VENDOR(pa->pa_id) == p->p_vendor && 106 PCI_PRODUCT(pa->pa_id) == p->p_product) 107 return p; 108 } 109 110 return NULL; 111 } 112 113 static int 114 njs_pci_match(struct device *parent, struct cfdata *match, 115 void *aux) 116 { 117 struct pci_attach_args *pa = aux; 118 119 if (njs_pci_lookup(pa)) 120 return 1; 121 122 return 0; 123 } 124 125 static void 126 njs_pci_attach(struct device *parent, struct device *self, void *aux) 127 { 128 struct pci_attach_args *pa = aux; 129 struct njsc32_pci_softc *psc = (void *) self; 130 struct njsc32_softc *sc = &psc->sc_njsc32; 131 const struct njsc32_pci_product *prod; 132 pci_intr_handle_t ih; 133 pci_chipset_tag_t pc = pa->pa_pc; 134 pcireg_t reg; 135 const char *str_intr, *str_at; 136 137 aprint_naive(": SCSI controller\n"); 138 if ((prod = njs_pci_lookup(pa)) == NULL) 139 panic("njs_pci_attach"); 140 141 aprint_normal(": Workbit NinjaSCSI-32 SCSI adapter\n"); 142 sc->sc_model = prod->p_model; 143 sc->sc_clk = prod->p_clk; 144 145 psc->sc_pc = pc; 146 147 /* enable device and DMA */ 148 reg = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 149 reg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE | 150 PCI_COMMAND_MASTER_ENABLE; 151 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg); 152 153 /* 154 * Map registers. 155 * Try memory map first, and then try I/O. 156 */ 157 if (pci_mapreg_map(pa, NJSC32_PCI_BASEADDR_MEM, 158 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 159 &sc->sc_regt, &psc->sc_regmaph, NULL, &psc->sc_regmap_size) == 0) { 160 if (bus_space_subregion(sc->sc_regt, psc->sc_regmaph, 161 NJSC32_MEMOFFSET_REG, NJSC32_REGSIZE, &sc->sc_regh) != 0) { 162 /* failed -- undo map and try I/O */ 163 bus_space_unmap(sc->sc_regt, psc->sc_regmaph, 164 psc->sc_regmap_size); 165 goto try_io; 166 } 167 #ifdef NJSC32_DEBUG 168 printf("%s: memory space mapped\n", device_xname(&sc->sc_dev)); 169 #endif 170 sc->sc_flags = NJSC32_MEM_MAPPED; 171 } else { 172 try_io: 173 if (pci_mapreg_map(pa, NJSC32_PCI_BASEADDR_IO, 174 PCI_MAPREG_TYPE_IO, 0, &sc->sc_regt, &sc->sc_regh, 175 NULL, &psc->sc_regmap_size) == 0) { 176 #ifdef NJSC32_DEBUG 177 printf("%s: io space mapped\n", device_xname(&sc->sc_dev)); 178 #endif 179 sc->sc_flags = NJSC32_IO_MAPPED; 180 } else { 181 aprint_error_dev(&sc->sc_dev, "unable to map device registers\n"); 182 return; 183 } 184 } 185 186 sc->sc_dmat = pa->pa_dmat; 187 188 /* map interrupt */ 189 if (pci_intr_map(pa, &ih)) { 190 aprint_error_dev(&sc->sc_dev, "couldn't map interrupt\n"); 191 return; 192 } 193 194 str_intr = pci_intr_string(pa->pa_pc, ih); 195 str_at = " at "; 196 if (str_intr == NULL) 197 str_at = str_intr = ""; 198 199 /* setup interrupt handler */ 200 if ((sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, njsc32_intr, sc)) 201 == NULL) { 202 aprint_error_dev(&sc->sc_dev, "unable to establish interrupt%s%s\n", 203 str_at, str_intr); 204 return; 205 } 206 printf("%s: interrupting%s%s\n", 207 device_xname(&sc->sc_dev), str_at, str_intr); 208 209 /* attach */ 210 njsc32_attach(sc); 211 } 212 213 static int 214 njs_pci_detach(struct device *self, int flags) 215 { 216 struct njsc32_pci_softc *psc = (void *) self; 217 struct njsc32_softc *sc = &psc->sc_njsc32; 218 int rv; 219 220 rv = njsc32_detach(sc, flags); 221 if (rv) 222 return rv; 223 224 if (sc->sc_ih) 225 pci_intr_disestablish(psc->sc_pc, sc->sc_ih); 226 227 if (sc->sc_flags & NJSC32_IO_MAPPED) 228 bus_space_unmap(sc->sc_regt, sc->sc_regh, psc->sc_regmap_size); 229 if (sc->sc_flags & NJSC32_MEM_MAPPED) 230 bus_space_unmap(sc->sc_regt, psc->sc_regmaph, 231 psc->sc_regmap_size); 232 233 return 0; 234 } 235
Indexes created Tue Sep 23 07:09:52 GMT 2025