Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * inventory.c |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * Copyright (c) 1999 The Puffin Group (David Kennedy and Alex deVries) |
| 10 | * Copyright (c) 2001 Matthew Wilcox for Hewlett-Packard |
| 11 | * |
| 12 | * These are the routines to discover what hardware exists in this box. |
| 13 | * This task is complicated by there being 3 different ways of |
| 14 | * performing an inventory, depending largely on the age of the box. |
| 15 | * The recommended way to do this is to check to see whether the machine |
| 16 | * is a `Snake' first, then try System Map, then try PAT. We try System |
| 17 | * Map before checking for a Snake -- this probably doesn't cause any |
| 18 | * problems, but... |
| 19 | */ |
| 20 | |
| 21 | #include <linux/types.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/mm.h> |
| 26 | #include <asm/hardware.h> |
| 27 | #include <asm/io.h> |
| 28 | #include <asm/mmzone.h> |
| 29 | #include <asm/pdc.h> |
| 30 | #include <asm/pdcpat.h> |
| 31 | #include <asm/processor.h> |
| 32 | #include <asm/page.h> |
| 33 | #include <asm/parisc-device.h> |
| 34 | |
| 35 | /* |
| 36 | ** Debug options |
| 37 | ** DEBUG_PAT Dump details which PDC PAT provides about ranges/devices. |
| 38 | */ |
| 39 | #undef DEBUG_PAT |
| 40 | |
Helge Deller | 8039de1 | 2006-01-10 20:35:03 -0500 | [diff] [blame] | 41 | int pdc_type __read_mostly = PDC_TYPE_ILLEGAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | void __init setup_pdc(void) |
| 44 | { |
| 45 | long status; |
| 46 | unsigned int bus_id; |
| 47 | struct pdc_system_map_mod_info module_result; |
| 48 | struct pdc_module_path module_path; |
| 49 | struct pdc_model model; |
| 50 | #ifdef __LP64__ |
| 51 | struct pdc_pat_cell_num cell_info; |
| 52 | #endif |
| 53 | |
| 54 | /* Determine the pdc "type" used on this machine */ |
| 55 | |
| 56 | printk(KERN_INFO "Determining PDC firmware type: "); |
| 57 | |
| 58 | status = pdc_system_map_find_mods(&module_result, &module_path, 0); |
| 59 | if (status == PDC_OK) { |
| 60 | pdc_type = PDC_TYPE_SYSTEM_MAP; |
| 61 | printk("System Map.\n"); |
| 62 | return; |
| 63 | } |
| 64 | |
| 65 | /* |
| 66 | * If the machine doesn't support PDC_SYSTEM_MAP then either it |
| 67 | * is a pdc pat box, or it is an older box. All 64 bit capable |
| 68 | * machines are either pdc pat boxes or they support PDC_SYSTEM_MAP. |
| 69 | */ |
| 70 | |
| 71 | /* |
| 72 | * TODO: We should test for 64 bit capability and give a |
| 73 | * clearer message. |
| 74 | */ |
| 75 | |
| 76 | #ifdef __LP64__ |
| 77 | status = pdc_pat_cell_get_number(&cell_info); |
| 78 | if (status == PDC_OK) { |
| 79 | pdc_type = PDC_TYPE_PAT; |
| 80 | printk("64 bit PAT.\n"); |
| 81 | return; |
| 82 | } |
| 83 | #endif |
| 84 | |
| 85 | /* Check the CPU's bus ID. There's probably a better test. */ |
| 86 | |
| 87 | status = pdc_model_info(&model); |
| 88 | |
| 89 | bus_id = (model.hversion >> (4 + 7)) & 0x1f; |
| 90 | |
| 91 | switch (bus_id) { |
| 92 | case 0x4: /* 720, 730, 750, 735, 755 */ |
| 93 | case 0x6: /* 705, 710 */ |
| 94 | case 0x7: /* 715, 725 */ |
| 95 | case 0x8: /* 745, 747, 742 */ |
| 96 | case 0xA: /* 712 and similiar */ |
| 97 | case 0xC: /* 715/64, at least */ |
| 98 | |
| 99 | pdc_type = PDC_TYPE_SNAKE; |
| 100 | printk("Snake.\n"); |
| 101 | return; |
| 102 | |
| 103 | default: /* Everything else */ |
| 104 | |
| 105 | printk("Unsupported.\n"); |
| 106 | panic("If this is a 64-bit machine, please try a 64-bit kernel.\n"); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | #define PDC_PAGE_ADJ_SHIFT (PAGE_SHIFT - 12) /* pdc pages are always 4k */ |
| 111 | |
| 112 | static void __init |
| 113 | set_pmem_entry(physmem_range_t *pmem_ptr, unsigned long start, |
| 114 | unsigned long pages4k) |
| 115 | { |
| 116 | /* Rather than aligning and potentially throwing away |
| 117 | * memory, we'll assume that any ranges are already |
| 118 | * nicely aligned with any reasonable page size, and |
| 119 | * panic if they are not (it's more likely that the |
| 120 | * pdc info is bad in this case). |
| 121 | */ |
| 122 | |
Helge Deller | 8039de1 | 2006-01-10 20:35:03 -0500 | [diff] [blame] | 123 | if (unlikely( ((start & (PAGE_SIZE - 1)) != 0) |
| 124 | || ((pages4k & ((1UL << PDC_PAGE_ADJ_SHIFT) - 1)) != 0) )) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | panic("Memory range doesn't align with page size!\n"); |
| 127 | } |
| 128 | |
| 129 | pmem_ptr->start_pfn = (start >> PAGE_SHIFT); |
| 130 | pmem_ptr->pages = (pages4k >> PDC_PAGE_ADJ_SHIFT); |
| 131 | } |
| 132 | |
| 133 | static void __init pagezero_memconfig(void) |
| 134 | { |
| 135 | unsigned long npages; |
| 136 | |
| 137 | /* Use the 32 bit information from page zero to create a single |
| 138 | * entry in the pmem_ranges[] table. |
| 139 | * |
| 140 | * We currently don't support machines with contiguous memory |
| 141 | * >= 4 Gb, who report that memory using 64 bit only fields |
| 142 | * on page zero. It's not worth doing until it can be tested, |
| 143 | * and it is not clear we can support those machines for other |
| 144 | * reasons. |
| 145 | * |
| 146 | * If that support is done in the future, this is where it |
| 147 | * should be done. |
| 148 | */ |
| 149 | |
| 150 | npages = (PAGE_ALIGN(PAGE0->imm_max_mem) >> PAGE_SHIFT); |
| 151 | set_pmem_entry(pmem_ranges,0UL,npages); |
| 152 | npmem_ranges = 1; |
| 153 | } |
| 154 | |
| 155 | #ifdef __LP64__ |
| 156 | |
| 157 | /* All of the PDC PAT specific code is 64-bit only */ |
| 158 | |
| 159 | /* |
| 160 | ** The module object is filled via PDC_PAT_CELL[Return Cell Module]. |
| 161 | ** If a module is found, register module will get the IODC bytes via |
| 162 | ** pdc_iodc_read() using the PA view of conf_base_addr for the hpa parameter. |
| 163 | ** |
| 164 | ** The IO view can be used by PDC_PAT_CELL[Return Cell Module] |
| 165 | ** only for SBAs and LBAs. This view will cause an invalid |
| 166 | ** argument error for all other cell module types. |
| 167 | ** |
| 168 | */ |
| 169 | |
| 170 | static int __init |
| 171 | pat_query_module(ulong pcell_loc, ulong mod_index) |
| 172 | { |
| 173 | pdc_pat_cell_mod_maddr_block_t pa_pdc_cell; |
| 174 | unsigned long bytecnt; |
| 175 | unsigned long temp; /* 64-bit scratch value */ |
| 176 | long status; /* PDC return value status */ |
| 177 | struct parisc_device *dev; |
| 178 | |
| 179 | /* return cell module (PA or Processor view) */ |
| 180 | status = pdc_pat_cell_module(&bytecnt, pcell_loc, mod_index, |
| 181 | PA_VIEW, &pa_pdc_cell); |
| 182 | |
| 183 | if (status != PDC_OK) { |
| 184 | /* no more cell modules or error */ |
| 185 | return status; |
| 186 | } |
| 187 | |
| 188 | temp = pa_pdc_cell.cba; |
| 189 | dev = alloc_pa_dev(PAT_GET_CBA(temp), &pa_pdc_cell.mod_path); |
| 190 | if (!dev) { |
Matthew Wilcox | ba5c4f1 | 2005-11-17 16:33:29 -0500 | [diff] [blame] | 191 | return PDC_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | /* alloc_pa_dev sets dev->hpa */ |
| 195 | |
| 196 | /* |
| 197 | ** save parameters in the parisc_device |
| 198 | ** (The idea being the device driver will call pdc_pat_cell_module() |
| 199 | ** and store the results in its own data structure.) |
| 200 | */ |
| 201 | dev->pcell_loc = pcell_loc; |
| 202 | dev->mod_index = mod_index; |
| 203 | |
| 204 | /* save generic info returned from the call */ |
| 205 | /* REVISIT: who is the consumer of this? not sure yet... */ |
| 206 | dev->mod_info = pa_pdc_cell.mod_info; /* pass to PAT_GET_ENTITY() */ |
| 207 | dev->pmod_loc = pa_pdc_cell.mod_location; |
| 208 | |
| 209 | register_parisc_device(dev); /* advertise device */ |
| 210 | |
| 211 | #ifdef DEBUG_PAT |
| 212 | pdc_pat_cell_mod_maddr_block_t io_pdc_cell; |
| 213 | /* dump what we see so far... */ |
| 214 | switch (PAT_GET_ENTITY(dev->mod_info)) { |
| 215 | unsigned long i; |
| 216 | |
| 217 | case PAT_ENTITY_PROC: |
| 218 | printk(KERN_DEBUG "PAT_ENTITY_PROC: id_eid 0x%lx\n", |
| 219 | pa_pdc_cell.mod[0]); |
| 220 | break; |
| 221 | |
| 222 | case PAT_ENTITY_MEM: |
| 223 | printk(KERN_DEBUG |
| 224 | "PAT_ENTITY_MEM: amount 0x%lx min_gni_base 0x%lx min_gni_len 0x%lx\n", |
| 225 | pa_pdc_cell.mod[0], pa_pdc_cell.mod[1], |
| 226 | pa_pdc_cell.mod[2]); |
| 227 | break; |
| 228 | case PAT_ENTITY_CA: |
| 229 | printk(KERN_DEBUG "PAT_ENTITY_CA: %ld\n", pcell_loc); |
| 230 | break; |
| 231 | |
| 232 | case PAT_ENTITY_PBC: |
| 233 | printk(KERN_DEBUG "PAT_ENTITY_PBC: "); |
| 234 | goto print_ranges; |
| 235 | |
| 236 | case PAT_ENTITY_SBA: |
| 237 | printk(KERN_DEBUG "PAT_ENTITY_SBA: "); |
| 238 | goto print_ranges; |
| 239 | |
| 240 | case PAT_ENTITY_LBA: |
| 241 | printk(KERN_DEBUG "PAT_ENTITY_LBA: "); |
| 242 | |
| 243 | print_ranges: |
| 244 | pdc_pat_cell_module(&bytecnt, pcell_loc, mod_index, |
| 245 | IO_VIEW, &io_pdc_cell); |
| 246 | printk(KERN_DEBUG "ranges %ld\n", pa_pdc_cell.mod[1]); |
| 247 | for (i = 0; i < pa_pdc_cell.mod[1]; i++) { |
| 248 | printk(KERN_DEBUG |
| 249 | " PA_VIEW %ld: 0x%016lx 0x%016lx 0x%016lx\n", |
| 250 | i, pa_pdc_cell.mod[2 + i * 3], /* type */ |
| 251 | pa_pdc_cell.mod[3 + i * 3], /* start */ |
| 252 | pa_pdc_cell.mod[4 + i * 3]); /* finish (ie end) */ |
| 253 | printk(KERN_DEBUG |
| 254 | " IO_VIEW %ld: 0x%016lx 0x%016lx 0x%016lx\n", |
| 255 | i, io_pdc_cell.mod[2 + i * 3], /* type */ |
| 256 | io_pdc_cell.mod[3 + i * 3], /* start */ |
| 257 | io_pdc_cell.mod[4 + i * 3]); /* finish (ie end) */ |
| 258 | } |
| 259 | printk(KERN_DEBUG "\n"); |
| 260 | break; |
| 261 | } |
| 262 | #endif /* DEBUG_PAT */ |
| 263 | return PDC_OK; |
| 264 | } |
| 265 | |
| 266 | |
| 267 | /* pat pdc can return information about a variety of different |
| 268 | * types of memory (e.g. firmware,i/o, etc) but we only care about |
| 269 | * the usable physical ram right now. Since the firmware specific |
| 270 | * information is allocated on the stack, we'll be generous, in |
| 271 | * case there is a lot of other information we don't care about. |
| 272 | */ |
| 273 | |
| 274 | #define PAT_MAX_RANGES (4 * MAX_PHYSMEM_RANGES) |
| 275 | |
| 276 | static void __init pat_memconfig(void) |
| 277 | { |
| 278 | unsigned long actual_len; |
| 279 | struct pdc_pat_pd_addr_map_entry mem_table[PAT_MAX_RANGES+1]; |
| 280 | struct pdc_pat_pd_addr_map_entry *mtbl_ptr; |
| 281 | physmem_range_t *pmem_ptr; |
| 282 | long status; |
| 283 | int entries; |
| 284 | unsigned long length; |
| 285 | int i; |
| 286 | |
| 287 | length = (PAT_MAX_RANGES + 1) * sizeof(struct pdc_pat_pd_addr_map_entry); |
| 288 | |
| 289 | status = pdc_pat_pd_get_addr_map(&actual_len, mem_table, length, 0L); |
| 290 | |
| 291 | if ((status != PDC_OK) |
| 292 | || ((actual_len % sizeof(struct pdc_pat_pd_addr_map_entry)) != 0)) { |
| 293 | |
| 294 | /* The above pdc call shouldn't fail, but, just in |
| 295 | * case, just use the PAGE0 info. |
| 296 | */ |
| 297 | |
| 298 | printk("\n\n\n"); |
| 299 | printk(KERN_WARNING "WARNING! Could not get full memory configuration. " |
| 300 | "All memory may not be used!\n\n\n"); |
| 301 | pagezero_memconfig(); |
| 302 | return; |
| 303 | } |
| 304 | |
| 305 | entries = actual_len / sizeof(struct pdc_pat_pd_addr_map_entry); |
| 306 | |
| 307 | if (entries > PAT_MAX_RANGES) { |
| 308 | printk(KERN_WARNING "This Machine has more memory ranges than we support!\n"); |
| 309 | printk(KERN_WARNING "Some memory may not be used!\n"); |
| 310 | } |
| 311 | |
| 312 | /* Copy information into the firmware independent pmem_ranges |
| 313 | * array, skipping types we don't care about. Notice we said |
| 314 | * "may" above. We'll use all the entries that were returned. |
| 315 | */ |
| 316 | |
| 317 | npmem_ranges = 0; |
| 318 | mtbl_ptr = mem_table; |
| 319 | pmem_ptr = pmem_ranges; /* Global firmware independent table */ |
| 320 | for (i = 0; i < entries; i++,mtbl_ptr++) { |
| 321 | if ( (mtbl_ptr->entry_type != PAT_MEMORY_DESCRIPTOR) |
| 322 | || (mtbl_ptr->memory_type != PAT_MEMTYPE_MEMORY) |
| 323 | || (mtbl_ptr->pages == 0) |
| 324 | || ( (mtbl_ptr->memory_usage != PAT_MEMUSE_GENERAL) |
| 325 | && (mtbl_ptr->memory_usage != PAT_MEMUSE_GI) |
| 326 | && (mtbl_ptr->memory_usage != PAT_MEMUSE_GNI) ) ) { |
| 327 | |
| 328 | continue; |
| 329 | } |
| 330 | |
| 331 | if (npmem_ranges == MAX_PHYSMEM_RANGES) { |
| 332 | printk(KERN_WARNING "This Machine has more memory ranges than we support!\n"); |
| 333 | printk(KERN_WARNING "Some memory will not be used!\n"); |
| 334 | break; |
| 335 | } |
| 336 | |
| 337 | set_pmem_entry(pmem_ptr++,mtbl_ptr->paddr,mtbl_ptr->pages); |
| 338 | npmem_ranges++; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | static int __init pat_inventory(void) |
| 343 | { |
| 344 | int status; |
| 345 | ulong mod_index = 0; |
| 346 | struct pdc_pat_cell_num cell_info; |
| 347 | |
| 348 | /* |
| 349 | ** Note: Prelude (and it's successors: Lclass, A400/500) only |
| 350 | ** implement PDC_PAT_CELL sub-options 0 and 2. |
| 351 | */ |
| 352 | status = pdc_pat_cell_get_number(&cell_info); |
| 353 | if (status != PDC_OK) { |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | #ifdef DEBUG_PAT |
| 358 | printk(KERN_DEBUG "CELL_GET_NUMBER: 0x%lx 0x%lx\n", cell_info.cell_num, |
| 359 | cell_info.cell_loc); |
| 360 | #endif |
| 361 | |
| 362 | while (PDC_OK == pat_query_module(cell_info.cell_loc, mod_index)) { |
| 363 | mod_index++; |
| 364 | } |
| 365 | |
| 366 | return mod_index; |
| 367 | } |
| 368 | |
| 369 | /* We only look for extended memory ranges on a 64 bit capable box */ |
| 370 | static void __init sprockets_memconfig(void) |
| 371 | { |
| 372 | struct pdc_memory_table_raddr r_addr; |
| 373 | struct pdc_memory_table mem_table[MAX_PHYSMEM_RANGES]; |
| 374 | struct pdc_memory_table *mtbl_ptr; |
| 375 | physmem_range_t *pmem_ptr; |
| 376 | long status; |
| 377 | int entries; |
| 378 | int i; |
| 379 | |
| 380 | status = pdc_mem_mem_table(&r_addr,mem_table, |
| 381 | (unsigned long)MAX_PHYSMEM_RANGES); |
| 382 | |
| 383 | if (status != PDC_OK) { |
| 384 | |
| 385 | /* The above pdc call only works on boxes with sprockets |
| 386 | * firmware (newer B,C,J class). Other non PAT PDC machines |
| 387 | * do support more than 3.75 Gb of memory, but we don't |
| 388 | * support them yet. |
| 389 | */ |
| 390 | |
| 391 | pagezero_memconfig(); |
| 392 | return; |
| 393 | } |
| 394 | |
| 395 | if (r_addr.entries_total > MAX_PHYSMEM_RANGES) { |
| 396 | printk(KERN_WARNING "This Machine has more memory ranges than we support!\n"); |
| 397 | printk(KERN_WARNING "Some memory will not be used!\n"); |
| 398 | } |
| 399 | |
| 400 | entries = (int)r_addr.entries_returned; |
| 401 | |
| 402 | npmem_ranges = 0; |
| 403 | mtbl_ptr = mem_table; |
| 404 | pmem_ptr = pmem_ranges; /* Global firmware independent table */ |
| 405 | for (i = 0; i < entries; i++,mtbl_ptr++) { |
| 406 | set_pmem_entry(pmem_ptr++,mtbl_ptr->paddr,mtbl_ptr->pages); |
| 407 | npmem_ranges++; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | #else /* !__LP64__ */ |
| 412 | |
| 413 | #define pat_inventory() do { } while (0) |
| 414 | #define pat_memconfig() do { } while (0) |
| 415 | #define sprockets_memconfig() pagezero_memconfig() |
| 416 | |
| 417 | #endif /* !__LP64__ */ |
| 418 | |
| 419 | |
| 420 | #ifndef CONFIG_PA20 |
| 421 | |
| 422 | /* Code to support Snake machines (7[2350], 7[235]5, 715/Scorpio) */ |
| 423 | |
| 424 | static struct parisc_device * __init |
| 425 | legacy_create_device(struct pdc_memory_map *r_addr, |
| 426 | struct pdc_module_path *module_path) |
| 427 | { |
| 428 | struct parisc_device *dev; |
| 429 | int status = pdc_mem_map_hpa(r_addr, module_path); |
| 430 | if (status != PDC_OK) |
| 431 | return NULL; |
| 432 | |
| 433 | dev = alloc_pa_dev(r_addr->hpa, &module_path->path); |
| 434 | if (dev == NULL) |
| 435 | return NULL; |
| 436 | |
| 437 | register_parisc_device(dev); |
| 438 | return dev; |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * snake_inventory |
| 443 | * |
| 444 | * Before PDC_SYSTEM_MAP was invented, the PDC_MEM_MAP call was used. |
| 445 | * To use it, we initialise the mod_path.bc to 0xff and try all values of |
| 446 | * mod to get the HPA for the top-level devices. Bus adapters may have |
| 447 | * sub-devices which are discovered by setting bc[5] to 0 and bc[4] to the |
| 448 | * module, then trying all possible functions. |
| 449 | */ |
| 450 | static void __init snake_inventory(void) |
| 451 | { |
| 452 | int mod; |
| 453 | for (mod = 0; mod < 16; mod++) { |
| 454 | struct parisc_device *dev; |
| 455 | struct pdc_module_path module_path; |
| 456 | struct pdc_memory_map r_addr; |
| 457 | unsigned int func; |
| 458 | |
| 459 | memset(module_path.path.bc, 0xff, 6); |
| 460 | module_path.path.mod = mod; |
| 461 | dev = legacy_create_device(&r_addr, &module_path); |
| 462 | if ((!dev) || (dev->id.hw_type != HPHW_BA)) |
| 463 | continue; |
| 464 | |
| 465 | memset(module_path.path.bc, 0xff, 4); |
| 466 | module_path.path.bc[4] = mod; |
| 467 | |
| 468 | for (func = 0; func < 16; func++) { |
| 469 | module_path.path.bc[5] = 0; |
| 470 | module_path.path.mod = func; |
| 471 | legacy_create_device(&r_addr, &module_path); |
| 472 | } |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | #else /* CONFIG_PA20 */ |
| 477 | #define snake_inventory() do { } while (0) |
| 478 | #endif /* CONFIG_PA20 */ |
| 479 | |
| 480 | /* Common 32/64 bit based code goes here */ |
| 481 | |
| 482 | /** |
| 483 | * add_system_map_addresses - Add additional addresses to the parisc device. |
| 484 | * @dev: The parisc device. |
| 485 | * @num_addrs: Then number of addresses to add; |
| 486 | * @module_instance: The system_map module instance. |
| 487 | * |
| 488 | * This function adds any additional addresses reported by the system_map |
| 489 | * firmware to the parisc device. |
| 490 | */ |
| 491 | static void __init |
| 492 | add_system_map_addresses(struct parisc_device *dev, int num_addrs, |
| 493 | int module_instance) |
| 494 | { |
| 495 | int i; |
| 496 | long status; |
| 497 | struct pdc_system_map_addr_info addr_result; |
| 498 | |
| 499 | dev->addr = kmalloc(num_addrs * sizeof(unsigned long), GFP_KERNEL); |
| 500 | if(!dev->addr) { |
| 501 | printk(KERN_ERR "%s %s(): memory allocation failure\n", |
| 502 | __FILE__, __FUNCTION__); |
| 503 | return; |
| 504 | } |
| 505 | |
| 506 | for(i = 1; i <= num_addrs; ++i) { |
| 507 | status = pdc_system_map_find_addrs(&addr_result, |
| 508 | module_instance, i); |
| 509 | if(PDC_OK == status) { |
| 510 | dev->addr[dev->num_addrs] = (unsigned long)addr_result.mod_addr; |
| 511 | dev->num_addrs++; |
| 512 | } else { |
| 513 | printk(KERN_WARNING |
| 514 | "Bad PDC_FIND_ADDRESS status return (%ld) for index %d\n", |
| 515 | status, i); |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * system_map_inventory - Retrieve firmware devices via SYSTEM_MAP. |
| 522 | * |
| 523 | * This function attempts to retrieve and register all the devices firmware |
| 524 | * knows about via the SYSTEM_MAP PDC call. |
| 525 | */ |
| 526 | static void __init system_map_inventory(void) |
| 527 | { |
| 528 | int i; |
| 529 | long status = PDC_OK; |
| 530 | |
| 531 | for (i = 0; i < 256; i++) { |
| 532 | struct parisc_device *dev; |
| 533 | struct pdc_system_map_mod_info module_result; |
| 534 | struct pdc_module_path module_path; |
| 535 | |
| 536 | status = pdc_system_map_find_mods(&module_result, |
| 537 | &module_path, i); |
| 538 | if ((status == PDC_BAD_PROC) || (status == PDC_NE_MOD)) |
| 539 | break; |
| 540 | if (status != PDC_OK) |
| 541 | continue; |
| 542 | |
| 543 | dev = alloc_pa_dev(module_result.mod_addr, &module_path.path); |
| 544 | if (!dev) |
| 545 | continue; |
| 546 | |
| 547 | register_parisc_device(dev); |
| 548 | |
| 549 | /* if available, get the additional addresses for a module */ |
| 550 | if (!module_result.add_addrs) |
| 551 | continue; |
| 552 | |
| 553 | add_system_map_addresses(dev, module_result.add_addrs, i); |
| 554 | } |
| 555 | |
| 556 | walk_central_bus(); |
| 557 | return; |
| 558 | } |
| 559 | |
| 560 | void __init do_memory_inventory(void) |
| 561 | { |
| 562 | switch (pdc_type) { |
| 563 | |
| 564 | case PDC_TYPE_PAT: |
| 565 | pat_memconfig(); |
| 566 | break; |
| 567 | |
| 568 | case PDC_TYPE_SYSTEM_MAP: |
| 569 | sprockets_memconfig(); |
| 570 | break; |
| 571 | |
| 572 | case PDC_TYPE_SNAKE: |
| 573 | pagezero_memconfig(); |
| 574 | return; |
| 575 | |
| 576 | default: |
| 577 | panic("Unknown PDC type!\n"); |
| 578 | } |
| 579 | |
| 580 | if (npmem_ranges == 0 || pmem_ranges[0].start_pfn != 0) { |
| 581 | printk(KERN_WARNING "Bad memory configuration returned!\n"); |
| 582 | printk(KERN_WARNING "Some memory may not be used!\n"); |
| 583 | pagezero_memconfig(); |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | void __init do_device_inventory(void) |
| 588 | { |
| 589 | printk(KERN_INFO "Searching for devices...\n"); |
| 590 | |
| 591 | init_parisc_bus(); |
| 592 | |
| 593 | switch (pdc_type) { |
| 594 | |
| 595 | case PDC_TYPE_PAT: |
| 596 | pat_inventory(); |
| 597 | break; |
| 598 | |
| 599 | case PDC_TYPE_SYSTEM_MAP: |
| 600 | system_map_inventory(); |
| 601 | break; |
| 602 | |
| 603 | case PDC_TYPE_SNAKE: |
| 604 | snake_inventory(); |
| 605 | break; |
| 606 | |
| 607 | default: |
| 608 | panic("Unknown PDC type!\n"); |
| 609 | } |
| 610 | printk(KERN_INFO "Found devices:\n"); |
| 611 | print_parisc_devices(); |
| 612 | } |