Commit | Line | Data |
---|---|---|
8369ae33 RM |
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 | }; | |
82a7c2bb NH |
22 | |
23 | static const struct bcma_device_id_name bcma_arm_device_names[] = { | |
e1ac4b40 | 24 | { BCMA_CORE_4706_MAC_GBIT_COMMON, "BCM4706 GBit MAC Common" }, |
82a7c2bb NH |
25 | { BCMA_CORE_ARM_1176, "ARM 1176" }, |
26 | { BCMA_CORE_ARM_7TDMI, "ARM 7TDMI" }, | |
27 | { BCMA_CORE_ARM_CM3, "ARM CM3" }, | |
28 | }; | |
29 | ||
30 | static const struct bcma_device_id_name bcma_bcm_device_names[] = { | |
8369ae33 | 31 | { BCMA_CORE_OOB_ROUTER, "OOB Router" }, |
d2bb2b9e RM |
32 | { BCMA_CORE_4706_CHIPCOMMON, "BCM4706 ChipCommon" }, |
33 | { BCMA_CORE_4706_SOC_RAM, "BCM4706 SOC RAM" }, | |
34 | { BCMA_CORE_4706_MAC_GBIT, "BCM4706 GBit MAC" }, | |
35 | { BCMA_CORE_AMEMC, "AMEMC (DDR)" }, | |
36 | { BCMA_CORE_ALTA, "ALTA (I2S)" }, | |
8369ae33 RM |
37 | { BCMA_CORE_INVALID, "Invalid" }, |
38 | { BCMA_CORE_CHIPCOMMON, "ChipCommon" }, | |
39 | { BCMA_CORE_ILINE20, "ILine 20" }, | |
40 | { BCMA_CORE_SRAM, "SRAM" }, | |
41 | { BCMA_CORE_SDRAM, "SDRAM" }, | |
42 | { BCMA_CORE_PCI, "PCI" }, | |
8369ae33 RM |
43 | { BCMA_CORE_ETHERNET, "Fast Ethernet" }, |
44 | { BCMA_CORE_V90, "V90" }, | |
45 | { BCMA_CORE_USB11_HOSTDEV, "USB 1.1 Hostdev" }, | |
46 | { BCMA_CORE_ADSL, "ADSL" }, | |
47 | { BCMA_CORE_ILINE100, "ILine 100" }, | |
48 | { BCMA_CORE_IPSEC, "IPSEC" }, | |
49 | { BCMA_CORE_UTOPIA, "UTOPIA" }, | |
50 | { BCMA_CORE_PCMCIA, "PCMCIA" }, | |
51 | { BCMA_CORE_INTERNAL_MEM, "Internal Memory" }, | |
52 | { BCMA_CORE_MEMC_SDRAM, "MEMC SDRAM" }, | |
53 | { BCMA_CORE_OFDM, "OFDM" }, | |
54 | { BCMA_CORE_EXTIF, "EXTIF" }, | |
55 | { BCMA_CORE_80211, "IEEE 802.11" }, | |
56 | { BCMA_CORE_PHY_A, "PHY A" }, | |
57 | { BCMA_CORE_PHY_B, "PHY B" }, | |
58 | { BCMA_CORE_PHY_G, "PHY G" }, | |
8369ae33 RM |
59 | { BCMA_CORE_USB11_HOST, "USB 1.1 Host" }, |
60 | { BCMA_CORE_USB11_DEV, "USB 1.1 Device" }, | |
61 | { BCMA_CORE_USB20_HOST, "USB 2.0 Host" }, | |
62 | { BCMA_CORE_USB20_DEV, "USB 2.0 Device" }, | |
63 | { BCMA_CORE_SDIO_HOST, "SDIO Host" }, | |
64 | { BCMA_CORE_ROBOSWITCH, "Roboswitch" }, | |
65 | { BCMA_CORE_PARA_ATA, "PATA" }, | |
66 | { BCMA_CORE_SATA_XORDMA, "SATA XOR-DMA" }, | |
67 | { BCMA_CORE_ETHERNET_GBIT, "GBit Ethernet" }, | |
68 | { BCMA_CORE_PCIE, "PCIe" }, | |
69 | { BCMA_CORE_PHY_N, "PHY N" }, | |
70 | { BCMA_CORE_SRAM_CTL, "SRAM Controller" }, | |
71 | { BCMA_CORE_MINI_MACPHY, "Mini MACPHY" }, | |
8369ae33 RM |
72 | { BCMA_CORE_PHY_LP, "PHY LP" }, |
73 | { BCMA_CORE_PMU, "PMU" }, | |
74 | { BCMA_CORE_PHY_SSN, "PHY SSN" }, | |
75 | { BCMA_CORE_SDIO_DEV, "SDIO Device" }, | |
8369ae33 | 76 | { BCMA_CORE_PHY_HT, "PHY HT" }, |
8369ae33 RM |
77 | { BCMA_CORE_MAC_GBIT, "GBit MAC" }, |
78 | { BCMA_CORE_DDR12_MEM_CTL, "DDR1/DDR2 Memory Controller" }, | |
79 | { BCMA_CORE_PCIE_RC, "PCIe Root Complex" }, | |
80 | { BCMA_CORE_OCP_OCP_BRIDGE, "OCP to OCP Bridge" }, | |
81 | { BCMA_CORE_SHARED_COMMON, "Common Shared" }, | |
82 | { BCMA_CORE_OCP_AHB_BRIDGE, "OCP to AHB Bridge" }, | |
83 | { BCMA_CORE_SPI_HOST, "SPI Host" }, | |
84 | { BCMA_CORE_I2S, "I2S" }, | |
85 | { BCMA_CORE_SDR_DDR1_MEM_CTL, "SDR/DDR1 Memory Controller" }, | |
86 | { BCMA_CORE_SHIM, "SHIM" }, | |
87 | { BCMA_CORE_DEFAULT, "Default" }, | |
88 | }; | |
82a7c2bb NH |
89 | |
90 | static const struct bcma_device_id_name bcma_mips_device_names[] = { | |
91 | { BCMA_CORE_MIPS, "MIPS" }, | |
92 | { BCMA_CORE_MIPS_3302, "MIPS 3302" }, | |
93 | { BCMA_CORE_MIPS_74K, "MIPS 74K" }, | |
94 | }; | |
95 | ||
96 | static const char *bcma_device_name(const struct bcma_device_id *id) | |
8369ae33 | 97 | { |
82a7c2bb NH |
98 | const struct bcma_device_id_name *names; |
99 | int size, i; | |
8369ae33 | 100 | |
82a7c2bb NH |
101 | /* search manufacturer specific names */ |
102 | switch (id->manuf) { | |
103 | case BCMA_MANUF_ARM: | |
104 | names = bcma_arm_device_names; | |
105 | size = ARRAY_SIZE(bcma_arm_device_names); | |
106 | break; | |
107 | case BCMA_MANUF_BCM: | |
108 | names = bcma_bcm_device_names; | |
109 | size = ARRAY_SIZE(bcma_bcm_device_names); | |
110 | break; | |
111 | case BCMA_MANUF_MIPS: | |
112 | names = bcma_mips_device_names; | |
113 | size = ARRAY_SIZE(bcma_mips_device_names); | |
114 | break; | |
115 | default: | |
116 | return "UNKNOWN"; | |
8369ae33 | 117 | } |
82a7c2bb NH |
118 | |
119 | for (i = 0; i < size; i++) { | |
120 | if (names[i].id == id->id) | |
121 | return names[i].name; | |
122 | } | |
123 | ||
8369ae33 RM |
124 | return "UNKNOWN"; |
125 | } | |
126 | ||
127 | static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx, | |
128 | u16 offset) | |
129 | { | |
130 | return readl(bus->mmio + offset); | |
131 | } | |
132 | ||
133 | static void bcma_scan_switch_core(struct bcma_bus *bus, u32 addr) | |
134 | { | |
135 | if (bus->hosttype == BCMA_HOSTTYPE_PCI) | |
136 | pci_write_config_dword(bus->host_pci, BCMA_PCI_BAR0_WIN, | |
137 | addr); | |
138 | } | |
139 | ||
140 | static u32 bcma_erom_get_ent(struct bcma_bus *bus, u32 **eromptr) | |
141 | { | |
142 | u32 ent = readl(*eromptr); | |
143 | (*eromptr)++; | |
144 | return ent; | |
145 | } | |
146 | ||
147 | static void bcma_erom_push_ent(u32 **eromptr) | |
148 | { | |
149 | (*eromptr)--; | |
150 | } | |
151 | ||
152 | static s32 bcma_erom_get_ci(struct bcma_bus *bus, u32 **eromptr) | |
153 | { | |
154 | u32 ent = bcma_erom_get_ent(bus, eromptr); | |
155 | if (!(ent & SCAN_ER_VALID)) | |
156 | return -ENOENT; | |
157 | if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_CI) | |
158 | return -ENOENT; | |
159 | return ent; | |
160 | } | |
161 | ||
162 | static bool bcma_erom_is_end(struct bcma_bus *bus, u32 **eromptr) | |
163 | { | |
164 | u32 ent = bcma_erom_get_ent(bus, eromptr); | |
165 | bcma_erom_push_ent(eromptr); | |
166 | return (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID)); | |
167 | } | |
168 | ||
169 | static bool bcma_erom_is_bridge(struct bcma_bus *bus, u32 **eromptr) | |
170 | { | |
171 | u32 ent = bcma_erom_get_ent(bus, eromptr); | |
172 | bcma_erom_push_ent(eromptr); | |
173 | return (((ent & SCAN_ER_VALID)) && | |
174 | ((ent & SCAN_ER_TAGX) == SCAN_ER_TAG_ADDR) && | |
175 | ((ent & SCAN_ADDR_TYPE) == SCAN_ADDR_TYPE_BRIDGE)); | |
176 | } | |
177 | ||
178 | static void bcma_erom_skip_component(struct bcma_bus *bus, u32 **eromptr) | |
179 | { | |
180 | u32 ent; | |
181 | while (1) { | |
182 | ent = bcma_erom_get_ent(bus, eromptr); | |
183 | if ((ent & SCAN_ER_VALID) && | |
184 | ((ent & SCAN_ER_TAG) == SCAN_ER_TAG_CI)) | |
185 | break; | |
186 | if (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID)) | |
187 | break; | |
188 | } | |
189 | bcma_erom_push_ent(eromptr); | |
190 | } | |
191 | ||
192 | static s32 bcma_erom_get_mst_port(struct bcma_bus *bus, u32 **eromptr) | |
193 | { | |
194 | u32 ent = bcma_erom_get_ent(bus, eromptr); | |
195 | if (!(ent & SCAN_ER_VALID)) | |
196 | return -ENOENT; | |
197 | if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_MP) | |
198 | return -ENOENT; | |
199 | return ent; | |
200 | } | |
201 | ||
202 | static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 **eromptr, | |
203 | u32 type, u8 port) | |
204 | { | |
205 | u32 addrl, addrh, sizel, sizeh = 0; | |
206 | u32 size; | |
207 | ||
208 | u32 ent = bcma_erom_get_ent(bus, eromptr); | |
209 | if ((!(ent & SCAN_ER_VALID)) || | |
210 | ((ent & SCAN_ER_TAGX) != SCAN_ER_TAG_ADDR) || | |
211 | ((ent & SCAN_ADDR_TYPE) != type) || | |
212 | (((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) { | |
213 | bcma_erom_push_ent(eromptr); | |
214 | return -EINVAL; | |
215 | } | |
216 | ||
217 | addrl = ent & SCAN_ADDR_ADDR; | |
218 | if (ent & SCAN_ADDR_AG32) | |
219 | addrh = bcma_erom_get_ent(bus, eromptr); | |
220 | else | |
221 | addrh = 0; | |
222 | ||
223 | if ((ent & SCAN_ADDR_SZ) == SCAN_ADDR_SZ_SZD) { | |
224 | size = bcma_erom_get_ent(bus, eromptr); | |
225 | sizel = size & SCAN_SIZE_SZ; | |
226 | if (size & SCAN_SIZE_SG32) | |
227 | sizeh = bcma_erom_get_ent(bus, eromptr); | |
228 | } else | |
229 | sizel = SCAN_ADDR_SZ_BASE << | |
230 | ((ent & SCAN_ADDR_SZ) >> SCAN_ADDR_SZ_SHIFT); | |
231 | ||
232 | return addrl; | |
233 | } | |
234 | ||
517f43e5 HM |
235 | static struct bcma_device *bcma_find_core_by_index(struct bcma_bus *bus, |
236 | u16 index) | |
237 | { | |
238 | struct bcma_device *core; | |
239 | ||
240 | list_for_each_entry(core, &bus->cores, list) { | |
241 | if (core->core_index == index) | |
242 | return core; | |
243 | } | |
244 | return NULL; | |
245 | } | |
246 | ||
5f2d6171 HM |
247 | static struct bcma_device *bcma_find_core_reverse(struct bcma_bus *bus, u16 coreid) |
248 | { | |
249 | struct bcma_device *core; | |
250 | ||
251 | list_for_each_entry_reverse(core, &bus->cores, list) { | |
252 | if (core->id.id == coreid) | |
253 | return core; | |
254 | } | |
255 | return NULL; | |
256 | } | |
257 | ||
982eee67 | 258 | static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, |
517f43e5 | 259 | struct bcma_device_id *match, int core_num, |
982eee67 HM |
260 | struct bcma_device *core) |
261 | { | |
262 | s32 tmp; | |
263 | u8 i, j; | |
264 | s32 cia, cib; | |
265 | u8 ports[2], wrappers[2]; | |
266 | ||
267 | /* get CIs */ | |
268 | cia = bcma_erom_get_ci(bus, eromptr); | |
269 | if (cia < 0) { | |
270 | bcma_erom_push_ent(eromptr); | |
271 | if (bcma_erom_is_end(bus, eromptr)) | |
272 | return -ESPIPE; | |
273 | return -EILSEQ; | |
274 | } | |
275 | cib = bcma_erom_get_ci(bus, eromptr); | |
276 | if (cib < 0) | |
277 | return -EILSEQ; | |
278 | ||
279 | /* parse CIs */ | |
280 | core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT; | |
281 | core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT; | |
282 | core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT; | |
283 | ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT; | |
284 | ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT; | |
285 | wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT; | |
286 | wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT; | |
287 | core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT; | |
288 | ||
289 | if (((core->id.manuf == BCMA_MANUF_ARM) && | |
290 | (core->id.id == 0xFFF)) || | |
291 | (ports[1] == 0)) { | |
292 | bcma_erom_skip_component(bus, eromptr); | |
293 | return -ENXIO; | |
294 | } | |
295 | ||
296 | /* check if component is a core at all */ | |
297 | if (wrappers[0] + wrappers[1] == 0) { | |
e1ac4b40 RM |
298 | /* Some specific cores don't need wrappers */ |
299 | switch (core->id.id) { | |
300 | case BCMA_CORE_4706_MAC_GBIT_COMMON: | |
301 | /* Not used yet: case BCMA_CORE_OOB_ROUTER: */ | |
302 | break; | |
303 | default: | |
304 | bcma_erom_skip_component(bus, eromptr); | |
305 | return -ENXIO; | |
306 | } | |
982eee67 HM |
307 | } |
308 | ||
309 | if (bcma_erom_is_bridge(bus, eromptr)) { | |
310 | bcma_erom_skip_component(bus, eromptr); | |
311 | return -ENXIO; | |
312 | } | |
313 | ||
517f43e5 HM |
314 | if (bcma_find_core_by_index(bus, core_num)) { |
315 | bcma_erom_skip_component(bus, eromptr); | |
316 | return -ENODEV; | |
317 | } | |
318 | ||
319 | if (match && ((match->manuf != BCMA_ANY_MANUF && | |
320 | match->manuf != core->id.manuf) || | |
321 | (match->id != BCMA_ANY_ID && match->id != core->id.id) || | |
322 | (match->rev != BCMA_ANY_REV && match->rev != core->id.rev) || | |
323 | (match->class != BCMA_ANY_CLASS && match->class != core->id.class) | |
324 | )) { | |
325 | bcma_erom_skip_component(bus, eromptr); | |
326 | return -ENODEV; | |
327 | } | |
328 | ||
982eee67 HM |
329 | /* get & parse master ports */ |
330 | for (i = 0; i < ports[0]; i++) { | |
4e0d8cc1 | 331 | s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr); |
982eee67 HM |
332 | if (mst_port_d < 0) |
333 | return -EILSEQ; | |
334 | } | |
335 | ||
e167d9fb HM |
336 | /* First Slave Address Descriptor should be port 0: |
337 | * the main register space for the core | |
338 | */ | |
339 | tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0); | |
340 | if (tmp <= 0) { | |
341 | /* Try again to see if it is a bridge */ | |
342 | tmp = bcma_erom_get_addr_desc(bus, eromptr, | |
343 | SCAN_ADDR_TYPE_BRIDGE, 0); | |
344 | if (tmp <= 0) { | |
345 | return -EILSEQ; | |
346 | } else { | |
3d9d8af3 | 347 | bcma_info(bus, "Bridge found\n"); |
e167d9fb HM |
348 | return -ENXIO; |
349 | } | |
350 | } | |
351 | core->addr = tmp; | |
352 | ||
982eee67 HM |
353 | /* get & parse slave ports */ |
354 | for (i = 0; i < ports[1]; i++) { | |
355 | for (j = 0; ; j++) { | |
356 | tmp = bcma_erom_get_addr_desc(bus, eromptr, | |
357 | SCAN_ADDR_TYPE_SLAVE, i); | |
358 | if (tmp < 0) { | |
359 | /* no more entries for port _i_ */ | |
360 | /* pr_debug("erom: slave port %d " | |
361 | * "has %d descriptors\n", i, j); */ | |
362 | break; | |
363 | } else { | |
364 | if (i == 0 && j == 0) | |
e167d9fb | 365 | core->addr1 = tmp; |
982eee67 HM |
366 | } |
367 | } | |
368 | } | |
369 | ||
370 | /* get & parse master wrappers */ | |
371 | for (i = 0; i < wrappers[0]; i++) { | |
372 | for (j = 0; ; j++) { | |
373 | tmp = bcma_erom_get_addr_desc(bus, eromptr, | |
374 | SCAN_ADDR_TYPE_MWRAP, i); | |
375 | if (tmp < 0) { | |
376 | /* no more entries for port _i_ */ | |
377 | /* pr_debug("erom: master wrapper %d " | |
378 | * "has %d descriptors\n", i, j); */ | |
379 | break; | |
380 | } else { | |
381 | if (i == 0 && j == 0) | |
382 | core->wrap = tmp; | |
383 | } | |
384 | } | |
385 | } | |
386 | ||
387 | /* get & parse slave wrappers */ | |
388 | for (i = 0; i < wrappers[1]; i++) { | |
389 | u8 hack = (ports[1] == 1) ? 0 : 1; | |
390 | for (j = 0; ; j++) { | |
391 | tmp = bcma_erom_get_addr_desc(bus, eromptr, | |
392 | SCAN_ADDR_TYPE_SWRAP, i + hack); | |
393 | if (tmp < 0) { | |
394 | /* no more entries for port _i_ */ | |
395 | /* pr_debug("erom: master wrapper %d " | |
396 | * has %d descriptors\n", i, j); */ | |
397 | break; | |
398 | } else { | |
399 | if (wrappers[0] == 0 && !i && !j) | |
400 | core->wrap = tmp; | |
401 | } | |
402 | } | |
403 | } | |
ecd177c2 HM |
404 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
405 | core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE); | |
406 | if (!core->io_addr) | |
407 | return -ENOMEM; | |
408 | core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE); | |
409 | if (!core->io_wrap) { | |
410 | iounmap(core->io_addr); | |
411 | return -ENOMEM; | |
412 | } | |
413 | } | |
982eee67 HM |
414 | return 0; |
415 | } | |
416 | ||
517f43e5 | 417 | void bcma_init_bus(struct bcma_bus *bus) |
8369ae33 | 418 | { |
8369ae33 | 419 | s32 tmp; |
f0d4724b | 420 | struct bcma_chipinfo *chipinfo = &(bus->chipinfo); |
8369ae33 | 421 | |
517f43e5 HM |
422 | if (bus->init_done) |
423 | return; | |
424 | ||
8369ae33 RM |
425 | INIT_LIST_HEAD(&bus->cores); |
426 | bus->nr_cores = 0; | |
427 | ||
428 | bcma_scan_switch_core(bus, BCMA_ADDR_BASE); | |
429 | ||
430 | tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID); | |
f0d4724b HM |
431 | chipinfo->id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT; |
432 | chipinfo->rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT; | |
433 | chipinfo->pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT; | |
3d9d8af3 RM |
434 | bcma_info(bus, "Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n", |
435 | chipinfo->id, chipinfo->rev, chipinfo->pkg); | |
f0d4724b | 436 | |
517f43e5 | 437 | bus->init_done = true; |
67a5c29e HM |
438 | } |
439 | ||
440 | int bcma_bus_scan(struct bcma_bus *bus) | |
441 | { | |
442 | u32 erombase; | |
443 | u32 __iomem *eromptr, *eromend; | |
444 | ||
517f43e5 | 445 | int err, core_num = 0; |
67a5c29e HM |
446 | |
447 | bcma_init_bus(bus); | |
8369ae33 RM |
448 | |
449 | erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM); | |
ecd177c2 HM |
450 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
451 | eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE); | |
452 | if (!eromptr) | |
453 | return -ENOMEM; | |
454 | } else { | |
455 | eromptr = bus->mmio; | |
456 | } | |
457 | ||
8369ae33 RM |
458 | eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32); |
459 | ||
460 | bcma_scan_switch_core(bus, erombase); | |
461 | ||
462 | while (eromptr < eromend) { | |
5f2d6171 | 463 | struct bcma_device *other_core; |
8369ae33 | 464 | struct bcma_device *core = kzalloc(sizeof(*core), GFP_KERNEL); |
9dbf5f55 HM |
465 | if (!core) { |
466 | err = -ENOMEM; | |
467 | goto out; | |
468 | } | |
8369ae33 RM |
469 | INIT_LIST_HEAD(&core->list); |
470 | core->bus = bus; | |
471 | ||
517f43e5 | 472 | err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core); |
f9721ed2 JJ |
473 | if (err < 0) { |
474 | kfree(core); | |
475 | if (err == -ENODEV) { | |
476 | core_num++; | |
477 | continue; | |
478 | } else if (err == -ENXIO) { | |
479 | continue; | |
480 | } else if (err == -ESPIPE) { | |
481 | break; | |
482 | } | |
9dbf5f55 | 483 | goto out; |
f9721ed2 | 484 | } |
8369ae33 | 485 | |
517f43e5 HM |
486 | core->core_index = core_num++; |
487 | bus->nr_cores++; | |
5f2d6171 HM |
488 | other_core = bcma_find_core_reverse(bus, core->id.id); |
489 | core->core_unit = (other_core == NULL) ? 0 : other_core->core_unit + 1; | |
517f43e5 | 490 | |
3d9d8af3 RM |
491 | bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n", |
492 | core->core_index, bcma_device_name(&core->id), | |
493 | core->id.manuf, core->id.id, core->id.rev, | |
494 | core->id.class); | |
8369ae33 | 495 | |
c334e25c | 496 | list_add_tail(&core->list, &bus->cores); |
8369ae33 RM |
497 | } |
498 | ||
9dbf5f55 HM |
499 | err = 0; |
500 | out: | |
ecd177c2 HM |
501 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
502 | iounmap(eromptr); | |
503 | ||
9dbf5f55 | 504 | return err; |
8369ae33 | 505 | } |
517f43e5 HM |
506 | |
507 | int __init bcma_bus_scan_early(struct bcma_bus *bus, | |
508 | struct bcma_device_id *match, | |
509 | struct bcma_device *core) | |
510 | { | |
511 | u32 erombase; | |
512 | u32 __iomem *eromptr, *eromend; | |
513 | ||
ecd177c2 HM |
514 | int err = -ENODEV; |
515 | int core_num = 0; | |
517f43e5 HM |
516 | |
517 | erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM); | |
ecd177c2 HM |
518 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
519 | eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE); | |
520 | if (!eromptr) | |
521 | return -ENOMEM; | |
522 | } else { | |
523 | eromptr = bus->mmio; | |
524 | } | |
525 | ||
517f43e5 HM |
526 | eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32); |
527 | ||
528 | bcma_scan_switch_core(bus, erombase); | |
529 | ||
530 | while (eromptr < eromend) { | |
531 | memset(core, 0, sizeof(*core)); | |
532 | INIT_LIST_HEAD(&core->list); | |
533 | core->bus = bus; | |
534 | ||
535 | err = bcma_get_next_core(bus, &eromptr, match, core_num, core); | |
536 | if (err == -ENODEV) { | |
537 | core_num++; | |
538 | continue; | |
539 | } else if (err == -ENXIO) | |
540 | continue; | |
541 | else if (err == -ESPIPE) | |
542 | break; | |
543 | else if (err < 0) | |
9dbf5f55 | 544 | goto out; |
517f43e5 HM |
545 | |
546 | core->core_index = core_num++; | |
547 | bus->nr_cores++; | |
3d9d8af3 RM |
548 | bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n", |
549 | core->core_index, bcma_device_name(&core->id), | |
550 | core->id.manuf, core->id.id, core->id.rev, | |
551 | core->id.class); | |
517f43e5 | 552 | |
c334e25c | 553 | list_add_tail(&core->list, &bus->cores); |
ecd177c2 HM |
554 | err = 0; |
555 | break; | |
517f43e5 HM |
556 | } |
557 | ||
9dbf5f55 | 558 | out: |
ecd177c2 HM |
559 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
560 | iounmap(eromptr); | |
561 | ||
562 | return err; | |
517f43e5 | 563 | } |