Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Broadcom specific AMBA |
| 3 | * Bus scanning |
| 4 | * |
| 5 | * Licensed under the GNU/GPL. See COPYING for details. |
| 6 | */ |
| 7 | |
| 8 | #include "scan.h" |
| 9 | #include "bcma_private.h" |
| 10 | |
| 11 | #include <linux/bcma/bcma.h> |
| 12 | #include <linux/bcma/bcma_regs.h> |
| 13 | #include <linux/pci.h> |
| 14 | #include <linux/io.h> |
| 15 | #include <linux/dma-mapping.h> |
| 16 | #include <linux/slab.h> |
| 17 | |
| 18 | struct bcma_device_id_name { |
| 19 | u16 id; |
| 20 | const char *name; |
| 21 | }; |
Nathan Hintz | 82a7c2b | 2012-05-04 21:56:31 -0700 | [diff] [blame] | 22 | |
| 23 | static const struct bcma_device_id_name bcma_arm_device_names[] = { |
| 24 | { BCMA_CORE_ARM_1176, "ARM 1176" }, |
| 25 | { BCMA_CORE_ARM_7TDMI, "ARM 7TDMI" }, |
| 26 | { BCMA_CORE_ARM_CM3, "ARM CM3" }, |
| 27 | }; |
| 28 | |
| 29 | static const struct bcma_device_id_name bcma_bcm_device_names[] = { |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 30 | { BCMA_CORE_OOB_ROUTER, "OOB Router" }, |
| 31 | { BCMA_CORE_INVALID, "Invalid" }, |
| 32 | { BCMA_CORE_CHIPCOMMON, "ChipCommon" }, |
| 33 | { BCMA_CORE_ILINE20, "ILine 20" }, |
| 34 | { BCMA_CORE_SRAM, "SRAM" }, |
| 35 | { BCMA_CORE_SDRAM, "SDRAM" }, |
| 36 | { BCMA_CORE_PCI, "PCI" }, |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 37 | { BCMA_CORE_ETHERNET, "Fast Ethernet" }, |
| 38 | { BCMA_CORE_V90, "V90" }, |
| 39 | { BCMA_CORE_USB11_HOSTDEV, "USB 1.1 Hostdev" }, |
| 40 | { BCMA_CORE_ADSL, "ADSL" }, |
| 41 | { BCMA_CORE_ILINE100, "ILine 100" }, |
| 42 | { BCMA_CORE_IPSEC, "IPSEC" }, |
| 43 | { BCMA_CORE_UTOPIA, "UTOPIA" }, |
| 44 | { BCMA_CORE_PCMCIA, "PCMCIA" }, |
| 45 | { BCMA_CORE_INTERNAL_MEM, "Internal Memory" }, |
| 46 | { BCMA_CORE_MEMC_SDRAM, "MEMC SDRAM" }, |
| 47 | { BCMA_CORE_OFDM, "OFDM" }, |
| 48 | { BCMA_CORE_EXTIF, "EXTIF" }, |
| 49 | { BCMA_CORE_80211, "IEEE 802.11" }, |
| 50 | { BCMA_CORE_PHY_A, "PHY A" }, |
| 51 | { BCMA_CORE_PHY_B, "PHY B" }, |
| 52 | { BCMA_CORE_PHY_G, "PHY G" }, |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 53 | { BCMA_CORE_USB11_HOST, "USB 1.1 Host" }, |
| 54 | { BCMA_CORE_USB11_DEV, "USB 1.1 Device" }, |
| 55 | { BCMA_CORE_USB20_HOST, "USB 2.0 Host" }, |
| 56 | { BCMA_CORE_USB20_DEV, "USB 2.0 Device" }, |
| 57 | { BCMA_CORE_SDIO_HOST, "SDIO Host" }, |
| 58 | { BCMA_CORE_ROBOSWITCH, "Roboswitch" }, |
| 59 | { BCMA_CORE_PARA_ATA, "PATA" }, |
| 60 | { BCMA_CORE_SATA_XORDMA, "SATA XOR-DMA" }, |
| 61 | { BCMA_CORE_ETHERNET_GBIT, "GBit Ethernet" }, |
| 62 | { BCMA_CORE_PCIE, "PCIe" }, |
| 63 | { BCMA_CORE_PHY_N, "PHY N" }, |
| 64 | { BCMA_CORE_SRAM_CTL, "SRAM Controller" }, |
| 65 | { BCMA_CORE_MINI_MACPHY, "Mini MACPHY" }, |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 66 | { BCMA_CORE_PHY_LP, "PHY LP" }, |
| 67 | { BCMA_CORE_PMU, "PMU" }, |
| 68 | { BCMA_CORE_PHY_SSN, "PHY SSN" }, |
| 69 | { BCMA_CORE_SDIO_DEV, "SDIO Device" }, |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 70 | { BCMA_CORE_PHY_HT, "PHY HT" }, |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 71 | { BCMA_CORE_MAC_GBIT, "GBit MAC" }, |
| 72 | { BCMA_CORE_DDR12_MEM_CTL, "DDR1/DDR2 Memory Controller" }, |
| 73 | { BCMA_CORE_PCIE_RC, "PCIe Root Complex" }, |
| 74 | { BCMA_CORE_OCP_OCP_BRIDGE, "OCP to OCP Bridge" }, |
| 75 | { BCMA_CORE_SHARED_COMMON, "Common Shared" }, |
| 76 | { BCMA_CORE_OCP_AHB_BRIDGE, "OCP to AHB Bridge" }, |
| 77 | { BCMA_CORE_SPI_HOST, "SPI Host" }, |
| 78 | { BCMA_CORE_I2S, "I2S" }, |
| 79 | { BCMA_CORE_SDR_DDR1_MEM_CTL, "SDR/DDR1 Memory Controller" }, |
| 80 | { BCMA_CORE_SHIM, "SHIM" }, |
| 81 | { BCMA_CORE_DEFAULT, "Default" }, |
| 82 | }; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 83 | |
Nathan Hintz | 82a7c2b | 2012-05-04 21:56:31 -0700 | [diff] [blame] | 84 | static const struct bcma_device_id_name bcma_mips_device_names[] = { |
| 85 | { BCMA_CORE_MIPS, "MIPS" }, |
| 86 | { BCMA_CORE_MIPS_3302, "MIPS 3302" }, |
| 87 | { BCMA_CORE_MIPS_74K, "MIPS 74K" }, |
| 88 | }; |
| 89 | |
| 90 | static const char *bcma_device_name(const struct bcma_device_id *id) |
| 91 | { |
| 92 | const struct bcma_device_id_name *names; |
| 93 | int size, i; |
| 94 | |
| 95 | /* search manufacturer specific names */ |
| 96 | switch (id->manuf) { |
| 97 | case BCMA_MANUF_ARM: |
| 98 | names = bcma_arm_device_names; |
| 99 | size = ARRAY_SIZE(bcma_arm_device_names); |
| 100 | break; |
| 101 | case BCMA_MANUF_BCM: |
| 102 | names = bcma_bcm_device_names; |
| 103 | size = ARRAY_SIZE(bcma_bcm_device_names); |
| 104 | break; |
| 105 | case BCMA_MANUF_MIPS: |
| 106 | names = bcma_mips_device_names; |
| 107 | size = ARRAY_SIZE(bcma_mips_device_names); |
| 108 | break; |
| 109 | default: |
| 110 | return "UNKNOWN"; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 111 | } |
Nathan Hintz | 82a7c2b | 2012-05-04 21:56:31 -0700 | [diff] [blame] | 112 | |
| 113 | for (i = 0; i < size; i++) { |
| 114 | if (names[i].id == id->id) |
| 115 | return names[i].name; |
| 116 | } |
| 117 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 118 | return "UNKNOWN"; |
| 119 | } |
| 120 | |
| 121 | static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx, |
| 122 | u16 offset) |
| 123 | { |
| 124 | return readl(bus->mmio + offset); |
| 125 | } |
| 126 | |
| 127 | static void bcma_scan_switch_core(struct bcma_bus *bus, u32 addr) |
| 128 | { |
| 129 | if (bus->hosttype == BCMA_HOSTTYPE_PCI) |
| 130 | pci_write_config_dword(bus->host_pci, BCMA_PCI_BAR0_WIN, |
| 131 | addr); |
| 132 | } |
| 133 | |
| 134 | static u32 bcma_erom_get_ent(struct bcma_bus *bus, u32 **eromptr) |
| 135 | { |
| 136 | u32 ent = readl(*eromptr); |
| 137 | (*eromptr)++; |
| 138 | return ent; |
| 139 | } |
| 140 | |
| 141 | static void bcma_erom_push_ent(u32 **eromptr) |
| 142 | { |
| 143 | (*eromptr)--; |
| 144 | } |
| 145 | |
| 146 | static s32 bcma_erom_get_ci(struct bcma_bus *bus, u32 **eromptr) |
| 147 | { |
| 148 | u32 ent = bcma_erom_get_ent(bus, eromptr); |
| 149 | if (!(ent & SCAN_ER_VALID)) |
| 150 | return -ENOENT; |
| 151 | if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_CI) |
| 152 | return -ENOENT; |
| 153 | return ent; |
| 154 | } |
| 155 | |
| 156 | static bool bcma_erom_is_end(struct bcma_bus *bus, u32 **eromptr) |
| 157 | { |
| 158 | u32 ent = bcma_erom_get_ent(bus, eromptr); |
| 159 | bcma_erom_push_ent(eromptr); |
| 160 | return (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID)); |
| 161 | } |
| 162 | |
| 163 | static bool bcma_erom_is_bridge(struct bcma_bus *bus, u32 **eromptr) |
| 164 | { |
| 165 | u32 ent = bcma_erom_get_ent(bus, eromptr); |
| 166 | bcma_erom_push_ent(eromptr); |
| 167 | return (((ent & SCAN_ER_VALID)) && |
| 168 | ((ent & SCAN_ER_TAGX) == SCAN_ER_TAG_ADDR) && |
| 169 | ((ent & SCAN_ADDR_TYPE) == SCAN_ADDR_TYPE_BRIDGE)); |
| 170 | } |
| 171 | |
| 172 | static void bcma_erom_skip_component(struct bcma_bus *bus, u32 **eromptr) |
| 173 | { |
| 174 | u32 ent; |
| 175 | while (1) { |
| 176 | ent = bcma_erom_get_ent(bus, eromptr); |
| 177 | if ((ent & SCAN_ER_VALID) && |
| 178 | ((ent & SCAN_ER_TAG) == SCAN_ER_TAG_CI)) |
| 179 | break; |
| 180 | if (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID)) |
| 181 | break; |
| 182 | } |
| 183 | bcma_erom_push_ent(eromptr); |
| 184 | } |
| 185 | |
| 186 | static s32 bcma_erom_get_mst_port(struct bcma_bus *bus, u32 **eromptr) |
| 187 | { |
| 188 | u32 ent = bcma_erom_get_ent(bus, eromptr); |
| 189 | if (!(ent & SCAN_ER_VALID)) |
| 190 | return -ENOENT; |
| 191 | if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_MP) |
| 192 | return -ENOENT; |
| 193 | return ent; |
| 194 | } |
| 195 | |
| 196 | static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 **eromptr, |
| 197 | u32 type, u8 port) |
| 198 | { |
| 199 | u32 addrl, addrh, sizel, sizeh = 0; |
| 200 | u32 size; |
| 201 | |
| 202 | u32 ent = bcma_erom_get_ent(bus, eromptr); |
| 203 | if ((!(ent & SCAN_ER_VALID)) || |
| 204 | ((ent & SCAN_ER_TAGX) != SCAN_ER_TAG_ADDR) || |
| 205 | ((ent & SCAN_ADDR_TYPE) != type) || |
| 206 | (((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) { |
| 207 | bcma_erom_push_ent(eromptr); |
| 208 | return -EINVAL; |
| 209 | } |
| 210 | |
| 211 | addrl = ent & SCAN_ADDR_ADDR; |
| 212 | if (ent & SCAN_ADDR_AG32) |
| 213 | addrh = bcma_erom_get_ent(bus, eromptr); |
| 214 | else |
| 215 | addrh = 0; |
| 216 | |
| 217 | if ((ent & SCAN_ADDR_SZ) == SCAN_ADDR_SZ_SZD) { |
| 218 | size = bcma_erom_get_ent(bus, eromptr); |
| 219 | sizel = size & SCAN_SIZE_SZ; |
| 220 | if (size & SCAN_SIZE_SG32) |
| 221 | sizeh = bcma_erom_get_ent(bus, eromptr); |
| 222 | } else |
| 223 | sizel = SCAN_ADDR_SZ_BASE << |
| 224 | ((ent & SCAN_ADDR_SZ) >> SCAN_ADDR_SZ_SHIFT); |
| 225 | |
| 226 | return addrl; |
| 227 | } |
| 228 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 229 | static struct bcma_device *bcma_find_core_by_index(struct bcma_bus *bus, |
| 230 | u16 index) |
| 231 | { |
| 232 | struct bcma_device *core; |
| 233 | |
| 234 | list_for_each_entry(core, &bus->cores, list) { |
| 235 | if (core->core_index == index) |
| 236 | return core; |
| 237 | } |
| 238 | return NULL; |
| 239 | } |
| 240 | |
Hauke Mehrtens | 5f2d617 | 2012-01-31 00:03:31 +0100 | [diff] [blame] | 241 | static struct bcma_device *bcma_find_core_reverse(struct bcma_bus *bus, u16 coreid) |
| 242 | { |
| 243 | struct bcma_device *core; |
| 244 | |
| 245 | list_for_each_entry_reverse(core, &bus->cores, list) { |
| 246 | if (core->id.id == coreid) |
| 247 | return core; |
| 248 | } |
| 249 | return NULL; |
| 250 | } |
| 251 | |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 252 | static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 253 | struct bcma_device_id *match, int core_num, |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 254 | struct bcma_device *core) |
| 255 | { |
| 256 | s32 tmp; |
| 257 | u8 i, j; |
| 258 | s32 cia, cib; |
| 259 | u8 ports[2], wrappers[2]; |
| 260 | |
| 261 | /* get CIs */ |
| 262 | cia = bcma_erom_get_ci(bus, eromptr); |
| 263 | if (cia < 0) { |
| 264 | bcma_erom_push_ent(eromptr); |
| 265 | if (bcma_erom_is_end(bus, eromptr)) |
| 266 | return -ESPIPE; |
| 267 | return -EILSEQ; |
| 268 | } |
| 269 | cib = bcma_erom_get_ci(bus, eromptr); |
| 270 | if (cib < 0) |
| 271 | return -EILSEQ; |
| 272 | |
| 273 | /* parse CIs */ |
| 274 | core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT; |
| 275 | core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT; |
| 276 | core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT; |
| 277 | ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT; |
| 278 | ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT; |
| 279 | wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT; |
| 280 | wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT; |
| 281 | core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT; |
| 282 | |
| 283 | if (((core->id.manuf == BCMA_MANUF_ARM) && |
| 284 | (core->id.id == 0xFFF)) || |
| 285 | (ports[1] == 0)) { |
| 286 | bcma_erom_skip_component(bus, eromptr); |
| 287 | return -ENXIO; |
| 288 | } |
| 289 | |
| 290 | /* check if component is a core at all */ |
| 291 | if (wrappers[0] + wrappers[1] == 0) { |
| 292 | /* we could save addrl of the router |
| 293 | if (cid == BCMA_CORE_OOB_ROUTER) |
| 294 | */ |
| 295 | bcma_erom_skip_component(bus, eromptr); |
| 296 | return -ENXIO; |
| 297 | } |
| 298 | |
| 299 | if (bcma_erom_is_bridge(bus, eromptr)) { |
| 300 | bcma_erom_skip_component(bus, eromptr); |
| 301 | return -ENXIO; |
| 302 | } |
| 303 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 304 | if (bcma_find_core_by_index(bus, core_num)) { |
| 305 | bcma_erom_skip_component(bus, eromptr); |
| 306 | return -ENODEV; |
| 307 | } |
| 308 | |
| 309 | if (match && ((match->manuf != BCMA_ANY_MANUF && |
| 310 | match->manuf != core->id.manuf) || |
| 311 | (match->id != BCMA_ANY_ID && match->id != core->id.id) || |
| 312 | (match->rev != BCMA_ANY_REV && match->rev != core->id.rev) || |
| 313 | (match->class != BCMA_ANY_CLASS && match->class != core->id.class) |
| 314 | )) { |
| 315 | bcma_erom_skip_component(bus, eromptr); |
| 316 | return -ENODEV; |
| 317 | } |
| 318 | |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 319 | /* get & parse master ports */ |
| 320 | for (i = 0; i < ports[0]; i++) { |
Dan Carpenter | 4e0d8cc | 2011-08-23 22:15:35 +0300 | [diff] [blame] | 321 | s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr); |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 322 | if (mst_port_d < 0) |
| 323 | return -EILSEQ; |
| 324 | } |
| 325 | |
Hauke Mehrtens | e167d9f | 2012-03-15 23:49:56 +0100 | [diff] [blame] | 326 | /* First Slave Address Descriptor should be port 0: |
| 327 | * the main register space for the core |
| 328 | */ |
| 329 | tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0); |
| 330 | if (tmp <= 0) { |
| 331 | /* Try again to see if it is a bridge */ |
| 332 | tmp = bcma_erom_get_addr_desc(bus, eromptr, |
| 333 | SCAN_ADDR_TYPE_BRIDGE, 0); |
| 334 | if (tmp <= 0) { |
| 335 | return -EILSEQ; |
| 336 | } else { |
| 337 | pr_info("Bridge found\n"); |
| 338 | return -ENXIO; |
| 339 | } |
| 340 | } |
| 341 | core->addr = tmp; |
| 342 | |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 343 | /* get & parse slave ports */ |
| 344 | for (i = 0; i < ports[1]; i++) { |
| 345 | for (j = 0; ; j++) { |
| 346 | tmp = bcma_erom_get_addr_desc(bus, eromptr, |
| 347 | SCAN_ADDR_TYPE_SLAVE, i); |
| 348 | if (tmp < 0) { |
| 349 | /* no more entries for port _i_ */ |
| 350 | /* pr_debug("erom: slave port %d " |
| 351 | * "has %d descriptors\n", i, j); */ |
| 352 | break; |
| 353 | } else { |
| 354 | if (i == 0 && j == 0) |
Hauke Mehrtens | e167d9f | 2012-03-15 23:49:56 +0100 | [diff] [blame] | 355 | core->addr1 = tmp; |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 356 | } |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | /* get & parse master wrappers */ |
| 361 | for (i = 0; i < wrappers[0]; i++) { |
| 362 | for (j = 0; ; j++) { |
| 363 | tmp = bcma_erom_get_addr_desc(bus, eromptr, |
| 364 | SCAN_ADDR_TYPE_MWRAP, i); |
| 365 | if (tmp < 0) { |
| 366 | /* no more entries for port _i_ */ |
| 367 | /* pr_debug("erom: master wrapper %d " |
| 368 | * "has %d descriptors\n", i, j); */ |
| 369 | break; |
| 370 | } else { |
| 371 | if (i == 0 && j == 0) |
| 372 | core->wrap = tmp; |
| 373 | } |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | /* get & parse slave wrappers */ |
| 378 | for (i = 0; i < wrappers[1]; i++) { |
| 379 | u8 hack = (ports[1] == 1) ? 0 : 1; |
| 380 | for (j = 0; ; j++) { |
| 381 | tmp = bcma_erom_get_addr_desc(bus, eromptr, |
| 382 | SCAN_ADDR_TYPE_SWRAP, i + hack); |
| 383 | if (tmp < 0) { |
| 384 | /* no more entries for port _i_ */ |
| 385 | /* pr_debug("erom: master wrapper %d " |
| 386 | * has %d descriptors\n", i, j); */ |
| 387 | break; |
| 388 | } else { |
| 389 | if (wrappers[0] == 0 && !i && !j) |
| 390 | core->wrap = tmp; |
| 391 | } |
| 392 | } |
| 393 | } |
Hauke Mehrtens | ecd177c | 2011-07-23 01:20:08 +0200 | [diff] [blame] | 394 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
| 395 | core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE); |
| 396 | if (!core->io_addr) |
| 397 | return -ENOMEM; |
| 398 | core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE); |
| 399 | if (!core->io_wrap) { |
| 400 | iounmap(core->io_addr); |
| 401 | return -ENOMEM; |
| 402 | } |
| 403 | } |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 404 | return 0; |
| 405 | } |
| 406 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 407 | void bcma_init_bus(struct bcma_bus *bus) |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 408 | { |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 409 | s32 tmp; |
Hauke Mehrtens | f0d4724 | 2012-02-01 00:13:54 +0100 | [diff] [blame] | 410 | struct bcma_chipinfo *chipinfo = &(bus->chipinfo); |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 411 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 412 | if (bus->init_done) |
| 413 | return; |
| 414 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 415 | INIT_LIST_HEAD(&bus->cores); |
| 416 | bus->nr_cores = 0; |
| 417 | |
| 418 | bcma_scan_switch_core(bus, BCMA_ADDR_BASE); |
| 419 | |
| 420 | tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID); |
Hauke Mehrtens | f0d4724 | 2012-02-01 00:13:54 +0100 | [diff] [blame] | 421 | chipinfo->id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT; |
| 422 | chipinfo->rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT; |
| 423 | chipinfo->pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT; |
| 424 | pr_info("Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n", |
| 425 | chipinfo->id, chipinfo->rev, chipinfo->pkg); |
| 426 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 427 | bus->init_done = true; |
Hauke Mehrtens | 67a5c29 | 2011-07-23 01:20:06 +0200 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | int bcma_bus_scan(struct bcma_bus *bus) |
| 431 | { |
| 432 | u32 erombase; |
| 433 | u32 __iomem *eromptr, *eromend; |
| 434 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 435 | int err, core_num = 0; |
Hauke Mehrtens | 67a5c29 | 2011-07-23 01:20:06 +0200 | [diff] [blame] | 436 | |
| 437 | bcma_init_bus(bus); |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 438 | |
| 439 | erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM); |
Hauke Mehrtens | ecd177c | 2011-07-23 01:20:08 +0200 | [diff] [blame] | 440 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
| 441 | eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE); |
| 442 | if (!eromptr) |
| 443 | return -ENOMEM; |
| 444 | } else { |
| 445 | eromptr = bus->mmio; |
| 446 | } |
| 447 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 448 | eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32); |
| 449 | |
| 450 | bcma_scan_switch_core(bus, erombase); |
| 451 | |
| 452 | while (eromptr < eromend) { |
Hauke Mehrtens | 5f2d617 | 2012-01-31 00:03:31 +0100 | [diff] [blame] | 453 | struct bcma_device *other_core; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 454 | struct bcma_device *core = kzalloc(sizeof(*core), GFP_KERNEL); |
| 455 | if (!core) |
| 456 | return -ENOMEM; |
| 457 | INIT_LIST_HEAD(&core->list); |
| 458 | core->bus = bus; |
| 459 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 460 | err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core); |
Jesper Juhl | f9721ed | 2012-01-29 21:34:04 +0100 | [diff] [blame] | 461 | if (err < 0) { |
| 462 | kfree(core); |
| 463 | if (err == -ENODEV) { |
| 464 | core_num++; |
| 465 | continue; |
| 466 | } else if (err == -ENXIO) { |
| 467 | continue; |
| 468 | } else if (err == -ESPIPE) { |
| 469 | break; |
| 470 | } |
Hauke Mehrtens | 982eee6 | 2011-07-23 01:20:05 +0200 | [diff] [blame] | 471 | return err; |
Jesper Juhl | f9721ed | 2012-01-29 21:34:04 +0100 | [diff] [blame] | 472 | } |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 473 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 474 | core->core_index = core_num++; |
| 475 | bus->nr_cores++; |
Hauke Mehrtens | 5f2d617 | 2012-01-31 00:03:31 +0100 | [diff] [blame] | 476 | other_core = bcma_find_core_reverse(bus, core->id.id); |
| 477 | core->core_unit = (other_core == NULL) ? 0 : other_core->core_unit + 1; |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 478 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 479 | pr_info("Core %d found: %s " |
| 480 | "(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n", |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 481 | core->core_index, bcma_device_name(&core->id), |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 482 | core->id.manuf, core->id.id, core->id.rev, |
| 483 | core->id.class); |
| 484 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 485 | list_add(&core->list, &bus->cores); |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 486 | } |
| 487 | |
Hauke Mehrtens | ecd177c | 2011-07-23 01:20:08 +0200 | [diff] [blame] | 488 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
| 489 | iounmap(eromptr); |
| 490 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 491 | return 0; |
| 492 | } |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 493 | |
| 494 | int __init bcma_bus_scan_early(struct bcma_bus *bus, |
| 495 | struct bcma_device_id *match, |
| 496 | struct bcma_device *core) |
| 497 | { |
| 498 | u32 erombase; |
| 499 | u32 __iomem *eromptr, *eromend; |
| 500 | |
Hauke Mehrtens | ecd177c | 2011-07-23 01:20:08 +0200 | [diff] [blame] | 501 | int err = -ENODEV; |
| 502 | int core_num = 0; |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 503 | |
| 504 | erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM); |
Hauke Mehrtens | ecd177c | 2011-07-23 01:20:08 +0200 | [diff] [blame] | 505 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
| 506 | eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE); |
| 507 | if (!eromptr) |
| 508 | return -ENOMEM; |
| 509 | } else { |
| 510 | eromptr = bus->mmio; |
| 511 | } |
| 512 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 513 | eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32); |
| 514 | |
| 515 | bcma_scan_switch_core(bus, erombase); |
| 516 | |
| 517 | while (eromptr < eromend) { |
| 518 | memset(core, 0, sizeof(*core)); |
| 519 | INIT_LIST_HEAD(&core->list); |
| 520 | core->bus = bus; |
| 521 | |
| 522 | err = bcma_get_next_core(bus, &eromptr, match, core_num, core); |
| 523 | if (err == -ENODEV) { |
| 524 | core_num++; |
| 525 | continue; |
| 526 | } else if (err == -ENXIO) |
| 527 | continue; |
| 528 | else if (err == -ESPIPE) |
| 529 | break; |
| 530 | else if (err < 0) |
| 531 | return err; |
| 532 | |
| 533 | core->core_index = core_num++; |
| 534 | bus->nr_cores++; |
| 535 | pr_info("Core %d found: %s " |
| 536 | "(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n", |
| 537 | core->core_index, bcma_device_name(&core->id), |
| 538 | core->id.manuf, core->id.id, core->id.rev, |
| 539 | core->id.class); |
| 540 | |
| 541 | list_add(&core->list, &bus->cores); |
Hauke Mehrtens | ecd177c | 2011-07-23 01:20:08 +0200 | [diff] [blame] | 542 | err = 0; |
| 543 | break; |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 544 | } |
| 545 | |
Hauke Mehrtens | ecd177c | 2011-07-23 01:20:08 +0200 | [diff] [blame] | 546 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
| 547 | iounmap(eromptr); |
| 548 | |
| 549 | return err; |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 550 | } |