mppb.c revision 1.10.4.1
1 /* $NetBSD: mppb.c,v 1.10.4.1 2021/03/23 07:14:42 thorpej 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/kmem.h> 42 43 #include <uvm/uvm_extern.h> 44 45 #include <machine/bus.h> 46 #include <machine/cpu.h> 47 48 #include <m68k/bus_dma.h> 49 #include <amiga/dev/zbusvar.h> 50 #include <amiga/pci/mppbreg.h> 51 52 #include <dev/pci/pcivar.h> 53 #include <dev/pci/pcireg.h> 54 #include <dev/pci/pcidevs.h> 55 #include <dev/pci/pciconf.h> 56 57 #include "opt_pci.h" 58 59 /* Zorro IDs */ 60 #define ZORRO_MANID_MATAY 44359 61 #define ZORRO_PRODID_PROMETHEUS 1 62 63 struct mppb_softc { 64 device_t sc_dev; 65 volatile char *ba; 66 struct bus_space_tag pci_conf_area; 67 struct bus_space_tag pci_io_area; 68 struct bus_space_tag pci_mem_area; 69 struct amiga_pci_chipset apc; 70 }; 71 72 static int mppb_match(device_t, cfdata_t, void *); 73 static void mppb_attach(device_t, device_t, void *); 74 pcireg_t mppb_pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 75 void mppb_pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 76 int mppb_pci_bus_maxdevs(pci_chipset_tag_t, int); 77 void mppb_pci_attach_hook (device_t, device_t, 78 struct pcibus_attach_args *pba); 79 pcitag_t mppb_pci_make_tag(pci_chipset_tag_t, int, int, int); 80 void mppb_pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 81 int *, int *, int *); 82 int mppb_pci_intr_map(const struct pci_attach_args *, 83 pci_intr_handle_t *); 84 const struct evcnt * mppb_pci_intr_evcnt(pci_chipset_tag_t, 85 pci_intr_handle_t); 86 87 CFATTACH_DECL_NEW(mppb, sizeof(struct mppb_softc), 88 mppb_match, mppb_attach, NULL, NULL); 89 90 static int 91 mppb_match(device_t parent, cfdata_t cf, void *aux) 92 { 93 struct zbus_args *zap; 94 95 zap = aux; 96 97 if (zap->manid != ZORRO_MANID_MATAY) 98 return 0; 99 100 if (zap->prodid != ZORRO_PRODID_PROMETHEUS) 101 return 0; 102 103 return 1; 104 } 105 106 107 static void 108 mppb_attach(device_t parent, device_t self, void *aux) 109 { 110 struct mppb_softc *sc; 111 struct pcibus_attach_args pba; 112 struct zbus_args *zap; 113 pci_chipset_tag_t pc; 114 115 zap = aux; 116 sc = device_private(self); 117 pc = &sc->apc; 118 sc->sc_dev = self; 119 sc->ba = zap->va; 120 121 aprint_normal(": Matay Prometheus PCI bridge\n"); 122 123 /* Setup bus space mappings. */ 124 sc->pci_conf_area.base = (bus_addr_t) sc->ba + MPPB_CONF_BASE; 125 sc->pci_conf_area.absm = &amiga_bus_stride_1swap; 126 127 sc->pci_mem_area.base = (bus_addr_t) sc->ba + MPPB_MEM_BASE; 128 sc->pci_mem_area.absm = &amiga_bus_stride_1; 129 130 sc->pci_io_area.base = (bus_addr_t) sc->ba + MPPB_IO_BASE; 131 sc->pci_io_area.absm = &amiga_bus_stride_1; 132 133 #ifdef MPPB_DEBUG 134 aprint_normal("mppb mapped conf %x->%x, mem %x->%x\n, io %x->%x\n", 135 kvtop((void*) sc->pci_conf_area.base), sc->pci_conf_area.base, 136 kvtop((void*) sc->pci_mem_area.base), sc->pci_mem_area.base, 137 kvtop((void*) sc->pci_io_area.base), sc->pci_io_area.base); 138 #endif 139 140 sc->apc.pci_conf_datat = &(sc->pci_conf_area); 141 142 if (bus_space_map(sc->apc.pci_conf_datat, 0, MPPB_CONF_SIZE, 0, 143 &sc->apc.pci_conf_datah)) 144 aprint_error_dev(self, 145 "couldn't map PCI configuration data space\n"); 146 147 /* Initialize the PCI chipset tag. */ 148 sc->apc.pc_conf_v = (void*) pc; 149 sc->apc.pc_bus_maxdevs = mppb_pci_bus_maxdevs; 150 sc->apc.pc_make_tag = amiga_pci_make_tag; 151 sc->apc.pc_decompose_tag = amiga_pci_decompose_tag; 152 sc->apc.pc_conf_read = mppb_pci_conf_read; 153 sc->apc.pc_conf_write = mppb_pci_conf_write; 154 sc->apc.pc_attach_hook = mppb_pci_attach_hook; 155 156 sc->apc.pc_intr_map = mppb_pci_intr_map; 157 sc->apc.pc_intr_string = amiga_pci_intr_string; 158 sc->apc.pc_intr_establish = amiga_pci_intr_establish; 159 sc->apc.pc_intr_disestablish = amiga_pci_intr_disestablish; 160 161 sc->apc.pc_conf_hook = amiga_pci_conf_hook; 162 sc->apc.pc_conf_interrupt = amiga_pci_conf_interrupt; 163 164 #ifdef PCI_NETBSD_CONFIGURE 165 struct pciconf_resources *pcires = pciconf_resource_init(); 166 167 pciconf_resource_add(pcires, PCICONF_RESOURCE_IO, 168 MPPB_IO_BASE, MPPB_IO_SIZE); 169 pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM, 170 MPPB_MEM_BASE, MPPB_MEM_SIZE); 171 172 #ifdef MPPB_DEBUG 173 aprint_normal("mppb: reconfiguring the bus!\n"); 174 #endif /* MPPB_DEBUG */ 175 pci_configure_bus(pc, pcires, 0, CACHELINE_SIZE); 176 177 pciconf_resource_fini(pcires); 178 #endif /* PCI_NETBSD_CONFIGURE */ 179 180 pba.pba_iot = &(sc->pci_io_area); 181 pba.pba_memt = &(sc->pci_mem_area); 182 pba.pba_dmat = NULL; 183 pba.pba_dmat64 = NULL; 184 pba.pba_pc = pc; 185 pba.pba_flags = PCI_FLAGS_MEM_OKAY | PCI_FLAGS_IO_OKAY; 186 pba.pba_bus = 0; 187 pba.pba_bridgetag = NULL; 188 189 config_found(self, &pba, pcibusprint, CFARG_EOL); 190 } 191 192 pcireg_t 193 mppb_pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 194 { 195 uint32_t data; 196 uint32_t bus, dev, func; 197 198 if ((unsigned int)reg >= PCI_CONF_SIZE) 199 return (pcireg_t) -1; 200 201 pci_decompose_tag(pc, tag, &bus, &dev, &func); 202 203 data = bus_space_read_4(pc->pci_conf_datat, pc->pci_conf_datah, 204 (MPPB_CONF_STRIDE*dev) + reg); 205 #ifdef MPPB_DEBUG_CONF 206 aprint_normal("mppb conf read va: %lx, bus: %d, dev: %d, " 207 "func: %d, reg: %d -r-> data %x\n", 208 pc->pci_conf_datah, bus, dev, func, reg, data); 209 #endif /* MPPB_DEBUG_CONF */ 210 return data; 211 } 212 213 void 214 mppb_pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val) 215 { 216 uint32_t bus, dev, func; 217 218 if ((unsigned int)reg >= PCI_CONF_SIZE) 219 return; 220 221 pci_decompose_tag(pc, tag, &bus, &dev, &func); 222 223 bus_space_write_4(pc->pci_conf_datat, pc->pci_conf_datah, 224 (MPPB_CONF_STRIDE*dev) + reg, val); 225 #ifdef MPPB_DEBUG_CONF 226 aprint_normal("mppb conf write va: %lx, bus: %d, dev: %d, " 227 "func: %d, reg: %d -w-> data %x\n", 228 pc->pci_conf_datah, bus, dev, func, reg, val); 229 #endif /* MPPB_DEBUG_CONF */ 230 231 } 232 233 int 234 mppb_pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 235 { 236 return 4; /* Prometheus has 4 slots */ 237 } 238 239 void 240 mppb_pci_attach_hook(device_t parent, device_t self, 241 struct pcibus_attach_args *pba) 242 { 243 } 244 245 int 246 mppb_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 247 { 248 /* TODO: add sanity checking */ 249 250 *ihp = MPPB_INT; 251 return 0; 252 } 253 254 const struct evcnt * 255 mppb_pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 256 { 257 /* TODO: implement */ 258 return NULL; 259 } 260
Indexes created Thu Oct 02 14:10:14 GMT 2025