isa.c revision 263763
1/*- 2 * Copyright (c) 1998 Doug Rabson 3 * Copyright (c) 2001 Thomas Moestl <tmm@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * from: FreeBSD: src/sys/alpha/isa/isa.c,v 1.26 2001/07/11 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: stable/10/sys/sparc64/isa/isa.c 263763 2014-03-26 07:31:57Z dim $"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/bus.h> 36 37#include <machine/bus.h> 38 39#include <sys/rman.h> 40 41#include <isa/isareg.h> 42#include <isa/isavar.h> 43#include <isa/isa_common.h> 44 45#include <dev/ofw/ofw_bus.h> 46#include <dev/ofw/openfirm.h> 47 48#include <machine/resource.h> 49 50#include <dev/pci/pcireg.h> 51#include <dev/pci/pcivar.h> 52 53#include <sparc64/pci/ofw_pci.h> 54#include <sparc64/isa/ofw_isa.h> 55 56/* There can be only one ISA bus, so it is safe to use globals. */ 57static u_int64_t isa_io_base; 58static u_int64_t isa_io_limit; 59static u_int64_t isa_mem_base; 60static u_int64_t isa_mem_limit; 61 62device_t isa_bus_device; 63 64static phandle_t isab_node; 65static struct isa_ranges *isab_ranges; 66static int isab_nrange; 67static struct ofw_bus_iinfo isa_iinfo; 68 69/* 70 * XXX: This is really partly PCI-specific, but unfortunately is 71 * differently enough to have to duplicate it here... 72 */ 73#define ISAB_RANGE_PHYS(r) \ 74 (((u_int64_t)(r)->phys_mid << 32) | (u_int64_t)(r)->phys_lo) 75#define ISAB_RANGE_SPACE(r) (((r)->phys_hi >> 24) & 0x03) 76 77#define ISAR_SPACE_IO 0x01 78#define ISAR_SPACE_MEM 0x02 79 80#define INRANGE(x, start, end) ((x) >= (start) && (x) <= (end)) 81 82static void isa_setup_children(device_t, phandle_t); 83 84void 85isa_init(device_t dev) 86{ 87 device_t bridge; 88 int i; 89 90 /* The parent of the bus must be a PCI-ISA bridge. */ 91 bridge = device_get_parent(dev); 92 isab_node = ofw_bus_get_node(bridge); 93 isab_nrange = OF_getprop_alloc(isab_node, "ranges", 94 sizeof(*isab_ranges), (void **)&isab_ranges); 95 if (isab_nrange <= 0) 96 panic("isa_init: cannot get bridge range property"); 97 98 ofw_bus_setup_iinfo(isab_node, &isa_iinfo, sizeof(ofw_isa_intr_t)); 99 100 isa_setup_children(dev, isab_node); 101 102 for (i = isab_nrange - 1; i >= 0; i--) { 103 switch(ISAB_RANGE_SPACE(&isab_ranges[i])) { 104 case ISAR_SPACE_IO: 105 /* This is probably always 0. */ 106 isa_io_base = ISAB_RANGE_PHYS(&isab_ranges[i]); 107 isa_io_limit = isab_ranges[i].size; 108 break; 109 case ISAR_SPACE_MEM: 110 /* This is probably always 0. */ 111 isa_mem_base = ISAB_RANGE_PHYS(&isab_ranges[i]); 112 isa_mem_limit = isab_ranges[i].size; 113 break; 114 } 115 } 116} 117 118static const struct { 119 const char *const name; 120 uint32_t id; 121} ofw_isa_pnp_map[] = { 122 { "SUNW,lomh", 0x0000ae4e }, /* SUN0000 */ 123 { "dma", 0x0002d041 }, /* PNP0200 */ 124 { "floppy", 0x0007d041 }, /* PNP0700 */ 125 { "rtc", 0x000bd041 }, /* PNP0B00 */ 126 { "flashprom", 0x0100ae4e }, /* SUN0001 */ 127 { "parallel", 0x0104d041 }, /* PNP0401 */ 128 { "serial", 0x0105d041 }, /* PNP0501 */ 129 { "su", 0x0105d041 }, /* PNP0501 */ 130 { "i2c", 0x0200ae4e }, /* SUN0002 */ 131 { "rmc-comm", 0x0300ae4e }, /* SUN0003 */ 132 { "kb_ps2", 0x0303d041 }, /* PNP0303 */ 133 { "kdmouse", 0x030fd041 }, /* PNP0F03 */ 134 { "bscbus", 0x0400ae4e }, /* SUN0004 */ 135 { "power", 0x0c0cd041 }, /* PNP0C0C */ 136 { NULL, 0x0 } 137}; 138 139static void 140isa_setup_children(device_t dev, phandle_t parent) 141{ 142 struct isa_regs *regs; 143 struct resource_list *rl; 144 device_t cdev; 145 u_int64_t end, start; 146 ofw_isa_intr_t *intrs, rintr; 147 phandle_t node; 148 uint32_t *drqs, *regidx; 149 int i, ndrq, nintr, nreg, nregidx, rid, rtype; 150 char *name; 151 152 /* 153 * Loop through children and fake up PnP devices for them. 154 * Their resources are added as fully mapped and specified because 155 * adjusting the resources and the resource list entries respectively 156 * in isa_alloc_resource() causes trouble with drivers which use 157 * rman_get_start(), pass-through or allocate and release resources 158 * multiple times, etc. Adjusting the resources might be better off 159 * in a bus_activate_resource method but the common ISA code doesn't 160 * allow for an isa_activate_resource(). 161 */ 162 for (node = OF_child(parent); node != 0; node = OF_peer(node)) { 163 if ((OF_getprop_alloc(node, "name", 1, (void **)&name)) == -1) 164 continue; 165 166 /* 167 * Keyboard and mouse controllers hang off of the `8042' 168 * node but we have no real use for the `8042' itself. 169 */ 170 if (strcmp(name, "8042") == 0) { 171 isa_setup_children(dev, node); 172 free(name, M_OFWPROP); 173 continue; 174 } 175 176 for (i = 0; ofw_isa_pnp_map[i].name != NULL; i++) 177 if (strcmp(ofw_isa_pnp_map[i].name, name) == 0) 178 break; 179 if (ofw_isa_pnp_map[i].name == NULL) { 180 device_printf(dev, "no PnP map entry for node " 181 "0x%lx: %s\n", (unsigned long)node, name); 182 free(name, M_OFWPROP); 183 continue; 184 } 185 186 if ((cdev = BUS_ADD_CHILD(dev, ISA_ORDER_PNPBIOS, NULL, -1)) == 187 NULL) 188 panic("isa_setup_children: BUS_ADD_CHILD failed"); 189 isa_set_logicalid(cdev, ofw_isa_pnp_map[i].id); 190 isa_set_vendorid(cdev, ofw_isa_pnp_map[i].id); 191 192 rl = BUS_GET_RESOURCE_LIST(dev, cdev); 193 nreg = OF_getprop_alloc(node, "reg", sizeof(*regs), 194 (void **)®s); 195 for (i = 0; i < nreg; i++) { 196 start = ISA_REG_PHYS(®s[i]); 197 end = start + regs[i].size - 1; 198 rtype = ofw_isa_range_map(isab_ranges, isab_nrange, 199 &start, &end, NULL); 200 rid = 0; 201 while (resource_list_find(rl, rtype, rid) != NULL) 202 rid++; 203 bus_set_resource(cdev, rtype, rid, start, 204 end - start + 1); 205 } 206 if (nreg == -1 && parent != isab_node) { 207 /* 208 * The "reg" property still might be an index into 209 * the set of registers of the parent device like 210 * with the nodes hanging off of the `8042' node. 211 */ 212 nregidx = OF_getprop_alloc(node, "reg", sizeof(*regidx), 213 (void **)®idx); 214 if (nregidx > 2) 215 panic("isa_setup_children: impossible number " 216 "of register indices"); 217 if (nregidx != -1 && (nreg = OF_getprop_alloc(parent, 218 "reg", sizeof(*regs), (void **)®s)) >= nregidx) { 219 for (i = 0; i < nregidx; i++) { 220 start = ISA_REG_PHYS(®s[regidx[i]]); 221 end = start + regs[regidx[i]].size - 1; 222 rtype = ofw_isa_range_map(isab_ranges, 223 isab_nrange, &start, &end, NULL); 224 rid = 0; 225 while (resource_list_find(rl, rtype, 226 rid) != NULL) 227 rid++; 228 bus_set_resource(cdev, rtype, rid, 229 start, end - start + 1); 230 } 231 } 232 if (regidx != NULL) 233 free(regidx, M_OFWPROP); 234 } 235 if (regs != NULL) 236 free(regs, M_OFWPROP); 237 238 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intrs), 239 (void **)&intrs); 240 for (i = 0; i < nintr; i++) { 241 if (intrs[i] > 7) 242 panic("isa_setup_children: intr too large"); 243 rintr = ofw_isa_route_intr(device_get_parent(dev), node, 244 &isa_iinfo, intrs[i]); 245 if (rintr == PCI_INVALID_IRQ) { 246 device_printf(dev, "could not map ISA " 247 "interrupt %d for node 0x%lx: %s\n", 248 intrs[i], (unsigned long)node, name); 249 continue; 250 } 251 bus_set_resource(cdev, SYS_RES_IRQ, i, rintr, 1); 252 } 253 if (intrs != NULL) 254 free(intrs, M_OFWPROP); 255 256 ndrq = OF_getprop_alloc(node, "dma-channel", sizeof(*drqs), 257 (void **)&drqs); 258 for (i = 0; i < ndrq; i++) 259 bus_set_resource(cdev, SYS_RES_DRQ, i, drqs[i], 1); 260 if (drqs != NULL) 261 free(drqs, M_OFWPROP); 262 263 /* 264 * Devices using DMA hang off of the `dma' node instead of 265 * directly from the ISA bridge node. 266 */ 267 if (strcmp(name, "dma") == 0) 268 isa_setup_children(dev, node); 269 270 free(name, M_OFWPROP); 271 } 272} 273 274struct resource * 275isa_alloc_resource(device_t bus, device_t child, int type, int *rid, 276 u_long start, u_long end, u_long count, u_int flags) 277{ 278 /* 279 * Consider adding a resource definition. 280 */ 281 int passthrough = (device_get_parent(child) != bus); 282 int isdefault = (start == 0UL && end == ~0UL); 283 struct resource_list *rl; 284 struct resource_list_entry *rle; 285 u_long base, limit; 286 287 rl = BUS_GET_RESOURCE_LIST(bus, child); 288 if (!passthrough && !isdefault) { 289 rle = resource_list_find(rl, type, *rid); 290 if (!rle) { 291 if (*rid < 0) 292 return (NULL); 293 switch (type) { 294 case SYS_RES_IRQ: 295 if (*rid >= ISA_NIRQ) 296 return (NULL); 297 break; 298 case SYS_RES_DRQ: 299 if (*rid >= ISA_NDRQ) 300 return (NULL); 301 break; 302 case SYS_RES_MEMORY: 303 if (*rid >= ISA_NMEM) 304 return (NULL); 305 break; 306 case SYS_RES_IOPORT: 307 if (*rid >= ISA_NPORT) 308 return (NULL); 309 break; 310 default: 311 return (NULL); 312 } 313 resource_list_add(rl, type, *rid, start, end, count); 314 } 315 } 316 317 /* 318 * Sanity check if the resource in the respective entry is fully 319 * mapped and specified and its type allocable. A driver could 320 * have added an out of range resource on its own. 321 */ 322 if (!passthrough) { 323 if ((rle = resource_list_find(rl, type, *rid)) == NULL) 324 return (NULL); 325 base = limit = 0; 326 switch (type) { 327 case SYS_RES_MEMORY: 328 base = isa_mem_base; 329 limit = base + isa_mem_limit; 330 break; 331 case SYS_RES_IOPORT: 332 base = isa_io_base; 333 limit = base + isa_io_limit; 334 break; 335 case SYS_RES_IRQ: 336 if (rle->start != rle->end || rle->start <= 7) 337 return (NULL); 338 break; 339 case SYS_RES_DRQ: 340 break; 341 default: 342 return (NULL); 343 } 344 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 345 if (!INRANGE(rle->start, base, limit) || 346 !INRANGE(rle->end, base, limit)) 347 return (NULL); 348 } 349 } 350 351 return (resource_list_alloc(rl, bus, child, type, rid, start, end, 352 count, flags)); 353} 354 355int 356isa_release_resource(device_t bus, device_t child, int type, int rid, 357 struct resource *res) 358{ 359 360 return (bus_generic_rl_release_resource(bus, child, type, rid, res)); 361} 362