mppb.c revision 1.1
1 /* $NetBSD: mppb.c,v 1.1 2011/09/17 16:55:34 rkujawa Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Radoslaw Kujawa. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* Matay Prometheus Zorro-PCI bridge driver. */ 33 34 #include <sys/types.h> 35 #include <sys/param.h> 36 #include <sys/time.h> 37 #include <sys/systm.h> 38 #include <sys/errno.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/extent.h> 42 #include <sys/kmem.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #include <machine/bus.h> 47 #include <machine/cpu.h> 48 49 #include <m68k/bus_dma.h> 50 #include <amiga/dev/zbusvar.h> 51 #include <amiga/pci/mppbreg.h> 52 53 #include <dev/pci/pcivar.h> 54 #include <dev/pci/pcireg.h> 55 #include <dev/pci/pcidevs.h> 56 #include <dev/pci/pciconf.h> 57 58 /* Zorro IDs */ 59 #define ZORRO_MANID_MATAY 44359 60 #define ZORRO_PRODID_PROMETHEUS 1 61 62 struct mppb_softc { 63 device_t sc_dev; 64 volatile char *ba; 65 struct bus_space_tag pci_conf_area; 66 struct bus_space_tag pci_io_area; 67 struct bus_space_tag pci_mem_area; 68 struct amiga_pci_chipset apc; 69 }; 70 71 static int mppb_match(struct device *, struct cfdata *, void *); 72 static void mppb_attach(struct device *, struct device *, void *); 73 pcireg_t mppb_pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 74 void mppb_pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 75 int mppb_pci_bus_maxdevs(pci_chipset_tag_t pc, int busno); 76 int mppb_pci_conf_hook(pci_chipset_tag_t pct, int bus, int dev, 77 int func, pcireg_t id); 78 void mppb_pci_attach_hook (struct device *parent, 79 struct device *self, struct pcibus_attach_args *pba); 80 pcitag_t mppb_pci_make_tag(pci_chipset_tag_t pc, int bus, int device, 81 int function); 82 void mppb_pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, 83 int *bp, int *dp, int *fp); 84 85 void * mppb_pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t 86 ih, int level, int (*ih_fun)(void *), void *ih_arg); 87 void mppb_pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie); 88 int mppb_pci_intr_map(const struct pci_attach_args *pa, 89 pci_intr_handle_t *ihp); 90 const char * mppb_pci_intr_string(pci_chipset_tag_t pc, 91 pci_intr_handle_t ih); 92 const struct evcnt * mppb_pci_intr_evcnt(pci_chipset_tag_t pc, 93 pci_intr_handle_t ih); 94 95 CFATTACH_DECL_NEW(mppb, sizeof(struct mppb_softc), 96 mppb_match, mppb_attach, NULL, NULL); 97 98 static int 99 mppb_match(device_t parent, cfdata_t cf, void *aux) 100 { 101 struct zbus_args *zap; 102 103 zap = aux; 104 105 if (zap->manid != ZORRO_MANID_MATAY) 106 return 0; 107 108 if (zap->prodid != ZORRO_PRODID_PROMETHEUS) 109 return 0; 110 111 #ifdef MPPB_DEBUG 112 aprint_normal("mppb matched by Zorro ID %d, %d\n", zap->manid, 113 zap->prodid); 114 #endif 115 116 return 1; 117 } 118 119 120 static void 121 mppb_attach(device_t parent, device_t self, void *aux) 122 { 123 struct mppb_softc *sc; 124 struct pcibus_attach_args pba; 125 struct zbus_args *zap; 126 pci_chipset_tag_t pc; 127 128 zap = aux; 129 sc = device_private(self); 130 pc = &sc->apc; 131 sc->sc_dev = self; 132 sc->ba = zap->va; 133 134 aprint_normal(": Matay Prometheus PCI bridge\n"); 135 136 /* Setup bus space mappings. */ 137 sc->pci_conf_area.base = (bus_addr_t) sc->ba + MPPB_CONF_BASE; 138 sc->pci_conf_area.absm = &amiga_bus_stride_1swap; 139 140 sc->pci_mem_area.base = (bus_addr_t) sc->ba + MPPB_MEM_BASE; 141 sc->pci_mem_area.absm = &amiga_bus_stride_1; 142 143 sc->pci_io_area.base = (bus_addr_t) sc->ba + MPPB_IO_BASE; 144 sc->pci_io_area.absm = &amiga_bus_stride_1; 145 146 #ifdef MPPB_DEBUG 147 aprint_normal("mppb mapped conf %x->%x, mem %x->%x\n, io %x->%x", 148 (zap->pa) + MPPB_CONF_BASE, sc->pci_conf_area.base, 149 (zap->pa) + MPPB_MEM_BASE, sc->pci_mem_area.base, 150 (zap->pa) + MPPB_IO_BASE, sc->pci_io_area.base); 151 #endif 152 153 sc->apc.pci_conf_iot = &(sc->pci_conf_area); 154 155 if (bus_space_map(sc->apc.pci_conf_iot, 0, MPPB_CONF_SIZE, 0, 156 &sc->apc.pci_conf_ioh)) 157 aprint_error_dev(self, 158 "couldn't map PCI configuration data space\n"); 159 160 /* Initialize the PCI chipset tag. */ 161 sc->apc.pc_conf_v = (void*) pc; 162 sc->apc.pc_bus_maxdevs = mppb_pci_bus_maxdevs; 163 sc->apc.pc_make_tag = mppb_pci_make_tag; 164 sc->apc.pc_decompose_tag = mppb_pci_decompose_tag; 165 sc->apc.pc_conf_read = mppb_pci_conf_read; 166 sc->apc.pc_conf_write = mppb_pci_conf_write; 167 sc->apc.pc_attach_hook = mppb_pci_attach_hook; 168 169 sc->apc.pc_intr_map = mppb_pci_intr_map; 170 sc->apc.pc_intr_string = mppb_pci_intr_string; 171 sc->apc.pc_intr_establish = mppb_pci_intr_establish; 172 sc->apc.pc_intr_disestablish = mppb_pci_intr_disestablish; 173 /* XXX: pc_conf_interrupt */ 174 175 pba.pba_iot = &(sc->pci_io_area); 176 pba.pba_memt = &(sc->pci_mem_area); 177 pba.pba_dmat = NULL; 178 pba.pba_dmat64 = NULL; 179 pba.pba_pc = pc; 180 pba.pba_flags = PCI_FLAGS_MEM_OKAY | PCI_FLAGS_IO_OKAY; 181 pba.pba_bus = 0; 182 pba.pba_bridgetag = NULL; 183 184 config_found_ia(self, "pcibus", &pba, pcibusprint); 185 } 186 187 pcireg_t 188 mppb_pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 189 { 190 uint32_t data; 191 uint32_t bus, dev, func; 192 193 pci_decompose_tag(pc, tag, &bus, &dev, &func); 194 195 data = bus_space_read_4(pc->pci_conf_iot, pc->pci_conf_ioh, 196 (MPPB_CONF_STRIDE*dev) + reg); 197 #ifdef MPPB_DEBUG 198 aprint_normal("mppb conf read va: %lx, bus: %d, dev: %d, " 199 "func: %d, reg: %d -r-> data %x\n", 200 pc->pci_conf_ioh, bus, dev, func, reg, data); 201 #endif 202 return data; 203 } 204 205 void 206 mppb_pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val) 207 { 208 uint32_t bus, dev, func; 209 210 pci_decompose_tag(pc, tag, &bus, &dev, &func); 211 212 bus_space_write_4(pc->pci_conf_iot, pc->pci_conf_ioh, 213 (MPPB_CONF_STRIDE*dev) + reg, val); 214 #ifdef MPPB_DEBUG 215 aprint_normal("mppb conf write va: %lx, bus: %d, dev: %d, " 216 "func: %d, reg: %d -w-> data %x\n", 217 pc->pci_conf_ioh, bus, dev, func, reg, val); 218 #endif 219 220 } 221 222 int 223 mppb_pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 224 { 225 return 4; /* Prometheus has 4 slots */ 226 } 227 228 pcitag_t 229 mppb_pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 230 { 231 return (bus << 16) | (device << 11) | (function << 8); 232 } 233 234 void 235 mppb_pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, 236 int *dp, int *fp) 237 { 238 if (bp != NULL) 239 *bp = (tag >> 16) & 0xff; 240 if (dp != NULL) 241 *dp = (tag >> 11) & 0x1f; 242 if (fp != NULL) 243 *fp = (tag >> 8) & 0x07; 244 } 245 246 void 247 mppb_pci_attach_hook(struct device *parent, struct device *self, 248 struct pcibus_attach_args *pba) 249 { 250 } 251 252 void * 253 mppb_pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, 254 int (*ih_fun)(void *), void *ih_arg) 255 { 256 struct isr* pci_isr; 257 pci_isr = kmem_zalloc(sizeof(struct isr), KM_SLEEP); 258 259 /* TODO: check for bogus handle */ 260 261 pci_isr->isr_intr = ih_fun; 262 pci_isr->isr_arg = ih_arg; 263 pci_isr->isr_ipl = MPPB_INT; 264 add_isr(pci_isr); 265 return pci_isr; 266 } 267 268 void 269 mppb_pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 270 { 271 remove_isr(cookie); 272 kmem_free(cookie, sizeof(struct isr)); 273 } 274 275 int 276 mppb_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 277 { 278 /* TODO: add sanity checking */ 279 280 *ihp = MPPB_INT; 281 return 0; 282 } 283 284 const char * 285 mppb_pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 286 { 287 static char str[10]; 288 289 sprintf(str, "INT%d", (int) ih); 290 return str; 291 } 292 293 const struct evcnt * 294 mppb_pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 295 { 296 /* TODO: implement */ 297 return NULL; 298 } 299 300
Indexes created Thu Oct 02 14:10:14 GMT 2025