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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
18struct bcma_device_id_name {
19 u16 id;
20 const char *name;
21};
22struct bcma_device_id_name bcma_device_names[] = {
23 { BCMA_CORE_OOB_ROUTER, "OOB Router" },
24 { BCMA_CORE_INVALID, "Invalid" },
25 { BCMA_CORE_CHIPCOMMON, "ChipCommon" },
26 { BCMA_CORE_ILINE20, "ILine 20" },
27 { BCMA_CORE_SRAM, "SRAM" },
28 { BCMA_CORE_SDRAM, "SDRAM" },
29 { BCMA_CORE_PCI, "PCI" },
30 { BCMA_CORE_MIPS, "MIPS" },
31 { BCMA_CORE_ETHERNET, "Fast Ethernet" },
32 { BCMA_CORE_V90, "V90" },
33 { BCMA_CORE_USB11_HOSTDEV, "USB 1.1 Hostdev" },
34 { BCMA_CORE_ADSL, "ADSL" },
35 { BCMA_CORE_ILINE100, "ILine 100" },
36 { BCMA_CORE_IPSEC, "IPSEC" },
37 { BCMA_CORE_UTOPIA, "UTOPIA" },
38 { BCMA_CORE_PCMCIA, "PCMCIA" },
39 { BCMA_CORE_INTERNAL_MEM, "Internal Memory" },
40 { BCMA_CORE_MEMC_SDRAM, "MEMC SDRAM" },
41 { BCMA_CORE_OFDM, "OFDM" },
42 { BCMA_CORE_EXTIF, "EXTIF" },
43 { BCMA_CORE_80211, "IEEE 802.11" },
44 { BCMA_CORE_PHY_A, "PHY A" },
45 { BCMA_CORE_PHY_B, "PHY B" },
46 { BCMA_CORE_PHY_G, "PHY G" },
47 { BCMA_CORE_MIPS_3302, "MIPS 3302" },
48 { BCMA_CORE_USB11_HOST, "USB 1.1 Host" },
49 { BCMA_CORE_USB11_DEV, "USB 1.1 Device" },
50 { BCMA_CORE_USB20_HOST, "USB 2.0 Host" },
51 { BCMA_CORE_USB20_DEV, "USB 2.0 Device" },
52 { BCMA_CORE_SDIO_HOST, "SDIO Host" },
53 { BCMA_CORE_ROBOSWITCH, "Roboswitch" },
54 { BCMA_CORE_PARA_ATA, "PATA" },
55 { BCMA_CORE_SATA_XORDMA, "SATA XOR-DMA" },
56 { BCMA_CORE_ETHERNET_GBIT, "GBit Ethernet" },
57 { BCMA_CORE_PCIE, "PCIe" },
58 { BCMA_CORE_PHY_N, "PHY N" },
59 { BCMA_CORE_SRAM_CTL, "SRAM Controller" },
60 { BCMA_CORE_MINI_MACPHY, "Mini MACPHY" },
61 { BCMA_CORE_ARM_1176, "ARM 1176" },
62 { BCMA_CORE_ARM_7TDMI, "ARM 7TDMI" },
63 { BCMA_CORE_PHY_LP, "PHY LP" },
64 { BCMA_CORE_PMU, "PMU" },
65 { BCMA_CORE_PHY_SSN, "PHY SSN" },
66 { BCMA_CORE_SDIO_DEV, "SDIO Device" },
67 { BCMA_CORE_ARM_CM3, "ARM CM3" },
68 { BCMA_CORE_PHY_HT, "PHY HT" },
69 { BCMA_CORE_MIPS_74K, "MIPS 74K" },
70 { BCMA_CORE_MAC_GBIT, "GBit MAC" },
71 { BCMA_CORE_DDR12_MEM_CTL, "DDR1/DDR2 Memory Controller" },
72 { BCMA_CORE_PCIE_RC, "PCIe Root Complex" },
73 { BCMA_CORE_OCP_OCP_BRIDGE, "OCP to OCP Bridge" },
74 { BCMA_CORE_SHARED_COMMON, "Common Shared" },
75 { BCMA_CORE_OCP_AHB_BRIDGE, "OCP to AHB Bridge" },
76 { BCMA_CORE_SPI_HOST, "SPI Host" },
77 { BCMA_CORE_I2S, "I2S" },
78 { BCMA_CORE_SDR_DDR1_MEM_CTL, "SDR/DDR1 Memory Controller" },
79 { BCMA_CORE_SHIM, "SHIM" },
80 { BCMA_CORE_DEFAULT, "Default" },
81};
82const char *bcma_device_name(struct bcma_device_id *id)
83{
84 int i;
85
86 if (id->manuf == BCMA_MANUF_BCM) {
87 for (i = 0; i < ARRAY_SIZE(bcma_device_names); i++) {
88 if (bcma_device_names[i].id == id->id)
89 return bcma_device_names[i].name;
90 }
91 }
92 return "UNKNOWN";
93}
94
95static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx,
96 u16 offset)
97{
98 return readl(bus->mmio + offset);
99}
100
101static void bcma_scan_switch_core(struct bcma_bus *bus, u32 addr)
102{
103 if (bus->hosttype == BCMA_HOSTTYPE_PCI)
104 pci_write_config_dword(bus->host_pci, BCMA_PCI_BAR0_WIN,
105 addr);
106}
107
108static u32 bcma_erom_get_ent(struct bcma_bus *bus, u32 **eromptr)
109{
110 u32 ent = readl(*eromptr);
111 (*eromptr)++;
112 return ent;
113}
114
115static void bcma_erom_push_ent(u32 **eromptr)
116{
117 (*eromptr)--;
118}
119
120static s32 bcma_erom_get_ci(struct bcma_bus *bus, u32 **eromptr)
121{
122 u32 ent = bcma_erom_get_ent(bus, eromptr);
123 if (!(ent & SCAN_ER_VALID))
124 return -ENOENT;
125 if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_CI)
126 return -ENOENT;
127 return ent;
128}
129
130static bool bcma_erom_is_end(struct bcma_bus *bus, u32 **eromptr)
131{
132 u32 ent = bcma_erom_get_ent(bus, eromptr);
133 bcma_erom_push_ent(eromptr);
134 return (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID));
135}
136
137static bool bcma_erom_is_bridge(struct bcma_bus *bus, u32 **eromptr)
138{
139 u32 ent = bcma_erom_get_ent(bus, eromptr);
140 bcma_erom_push_ent(eromptr);
141 return (((ent & SCAN_ER_VALID)) &&
142 ((ent & SCAN_ER_TAGX) == SCAN_ER_TAG_ADDR) &&
143 ((ent & SCAN_ADDR_TYPE) == SCAN_ADDR_TYPE_BRIDGE));
144}
145
146static void bcma_erom_skip_component(struct bcma_bus *bus, u32 **eromptr)
147{
148 u32 ent;
149 while (1) {
150 ent = bcma_erom_get_ent(bus, eromptr);
151 if ((ent & SCAN_ER_VALID) &&
152 ((ent & SCAN_ER_TAG) == SCAN_ER_TAG_CI))
153 break;
154 if (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID))
155 break;
156 }
157 bcma_erom_push_ent(eromptr);
158}
159
160static s32 bcma_erom_get_mst_port(struct bcma_bus *bus, u32 **eromptr)
161{
162 u32 ent = bcma_erom_get_ent(bus, eromptr);
163 if (!(ent & SCAN_ER_VALID))
164 return -ENOENT;
165 if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_MP)
166 return -ENOENT;
167 return ent;
168}
169
170static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 **eromptr,
171 u32 type, u8 port)
172{
173 u32 addrl, addrh, sizel, sizeh = 0;
174 u32 size;
175
176 u32 ent = bcma_erom_get_ent(bus, eromptr);
177 if ((!(ent & SCAN_ER_VALID)) ||
178 ((ent & SCAN_ER_TAGX) != SCAN_ER_TAG_ADDR) ||
179 ((ent & SCAN_ADDR_TYPE) != type) ||
180 (((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) {
181 bcma_erom_push_ent(eromptr);
182 return -EINVAL;
183 }
184
185 addrl = ent & SCAN_ADDR_ADDR;
186 if (ent & SCAN_ADDR_AG32)
187 addrh = bcma_erom_get_ent(bus, eromptr);
188 else
189 addrh = 0;
190
191 if ((ent & SCAN_ADDR_SZ) == SCAN_ADDR_SZ_SZD) {
192 size = bcma_erom_get_ent(bus, eromptr);
193 sizel = size & SCAN_SIZE_SZ;
194 if (size & SCAN_SIZE_SG32)
195 sizeh = bcma_erom_get_ent(bus, eromptr);
196 } else
197 sizel = SCAN_ADDR_SZ_BASE <<
198 ((ent & SCAN_ADDR_SZ) >> SCAN_ADDR_SZ_SHIFT);
199
200 return addrl;
201}
202
203int bcma_bus_scan(struct bcma_bus *bus)
204{
205 u32 erombase;
206 u32 __iomem *eromptr, *eromend;
207
208 s32 cia, cib;
209 u8 ports[2], wrappers[2];
210
211 s32 tmp;
212 u8 i, j;
213
214 int err;
215
216 INIT_LIST_HEAD(&bus->cores);
217 bus->nr_cores = 0;
218
219 bcma_scan_switch_core(bus, BCMA_ADDR_BASE);
220
221 tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID);
222 bus->chipinfo.id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT;
223 bus->chipinfo.rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT;
224 bus->chipinfo.pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT;
225
226 erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
227 eromptr = bus->mmio;
228 eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
229
230 bcma_scan_switch_core(bus, erombase);
231
232 while (eromptr < eromend) {
233 struct bcma_device *core = kzalloc(sizeof(*core), GFP_KERNEL);
234 if (!core)
235 return -ENOMEM;
236 INIT_LIST_HEAD(&core->list);
237 core->bus = bus;
238
239 /* get CIs */
240 cia = bcma_erom_get_ci(bus, &eromptr);
241 if (cia < 0) {
242 bcma_erom_push_ent(&eromptr);
243 if (bcma_erom_is_end(bus, &eromptr))
244 break;
245 err= -EILSEQ;
246 goto out;
247 }
248 cib = bcma_erom_get_ci(bus, &eromptr);
249 if (cib < 0) {
250 err= -EILSEQ;
251 goto out;
252 }
253
254 /* parse CIs */
255 core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
256 core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
257 core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
258 ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
259 ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
260 wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
261 wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
262 core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
263
264 if (((core->id.manuf == BCMA_MANUF_ARM) &&
265 (core->id.id == 0xFFF)) ||
266 (ports[1] == 0)) {
267 bcma_erom_skip_component(bus, &eromptr);
268 continue;
269 }
270
271 /* check if component is a core at all */
272 if (wrappers[0] + wrappers[1] == 0) {
273 /* we could save addrl of the router
274 if (cid == BCMA_CORE_OOB_ROUTER)
275 */
276 bcma_erom_skip_component(bus, &eromptr);
277 continue;
278 }
279
280 if (bcma_erom_is_bridge(bus, &eromptr)) {
281 bcma_erom_skip_component(bus, &eromptr);
282 continue;
283 }
284
285 /* get & parse master ports */
286 for (i = 0; i < ports[0]; i++) {
287 u32 mst_port_d = bcma_erom_get_mst_port(bus, &eromptr);
288 if (mst_port_d < 0) {
289 err= -EILSEQ;
290 goto out;
291 }
292 }
293
294 /* get & parse slave ports */
295 for (i = 0; i < ports[1]; i++) {
296 for (j = 0; ; j++) {
297 tmp = bcma_erom_get_addr_desc(bus, &eromptr,
298 SCAN_ADDR_TYPE_SLAVE, i);
299 if (tmp < 0) {
300 /* no more entries for port _i_ */
301 /* pr_debug("erom: slave port %d "
302 * "has %d descriptors\n", i, j); */
303 break;
304 } else {
305 if (i == 0 && j == 0)
306 core->addr = tmp;
307 }
308 }
309 }
310
311 /* get & parse master wrappers */
312 for (i = 0; i < wrappers[0]; i++) {
313 for (j = 0; ; j++) {
314 tmp = bcma_erom_get_addr_desc(bus, &eromptr,
315 SCAN_ADDR_TYPE_MWRAP, i);
316 if (tmp < 0) {
317 /* no more entries for port _i_ */
318 /* pr_debug("erom: master wrapper %d "
319 * "has %d descriptors\n", i, j); */
320 break;
321 } else {
322 if (i == 0 && j == 0)
323 core->wrap = tmp;
324 }
325 }
326 }
327
328 /* get & parse slave wrappers */
329 for (i = 0; i < wrappers[1]; i++) {
330 u8 hack = (ports[1] == 1) ? 0 : 1;
331 for (j = 0; ; j++) {
332 tmp = bcma_erom_get_addr_desc(bus, &eromptr,
333 SCAN_ADDR_TYPE_SWRAP, i + hack);
334 if (tmp < 0) {
335 /* no more entries for port _i_ */
336 /* pr_debug("erom: master wrapper %d "
337 * has %d descriptors\n", i, j); */
338 break;
339 } else {
340 if (wrappers[0] == 0 && !i && !j)
341 core->wrap = tmp;
342 }
343 }
344 }
345
346 pr_info("Core %d found: %s "
347 "(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
348 bus->nr_cores, bcma_device_name(&core->id),
349 core->id.manuf, core->id.id, core->id.rev,
350 core->id.class);
351
352 core->core_index = bus->nr_cores++;
353 list_add(&core->list, &bus->cores);
354 continue;
355out:
356 return err;
357 }
358
359 return 0;
360}
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
18struct bcma_device_id_name {
19 u16 id;
20 const char *name;
21};
22
23static 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
29static const struct bcma_device_id_name bcma_bcm_device_names[] = {
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" },
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" },
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" },
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" },
70 { BCMA_CORE_PHY_HT, "PHY HT" },
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};
83
84static 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
90static 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";
111 }
112
113 for (i = 0; i < size; i++) {
114 if (names[i].id == id->id)
115 return names[i].name;
116 }
117
118 return "UNKNOWN";
119}
120
121static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx,
122 u16 offset)
123{
124 return readl(bus->mmio + offset);
125}
126
127static 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
134static u32 bcma_erom_get_ent(struct bcma_bus *bus, u32 **eromptr)
135{
136 u32 ent = readl(*eromptr);
137 (*eromptr)++;
138 return ent;
139}
140
141static void bcma_erom_push_ent(u32 **eromptr)
142{
143 (*eromptr)--;
144}
145
146static 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
156static 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
163static 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
172static 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
186static 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
196static 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
229static 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
241static 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
252static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
253 struct bcma_device_id *match, int core_num,
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
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
319 /* get & parse master ports */
320 for (i = 0; i < ports[0]; i++) {
321 s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
322 if (mst_port_d < 0)
323 return -EILSEQ;
324 }
325
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
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)
355 core->addr1 = tmp;
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 }
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 }
404 return 0;
405}
406
407void bcma_init_bus(struct bcma_bus *bus)
408{
409 s32 tmp;
410 struct bcma_chipinfo *chipinfo = &(bus->chipinfo);
411
412 if (bus->init_done)
413 return;
414
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);
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
427 bus->init_done = true;
428}
429
430int bcma_bus_scan(struct bcma_bus *bus)
431{
432 u32 erombase;
433 u32 __iomem *eromptr, *eromend;
434
435 int err, core_num = 0;
436
437 bcma_init_bus(bus);
438
439 erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
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
448 eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
449
450 bcma_scan_switch_core(bus, erombase);
451
452 while (eromptr < eromend) {
453 struct bcma_device *other_core;
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
460 err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core);
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 }
471 return err;
472 }
473
474 core->core_index = core_num++;
475 bus->nr_cores++;
476 other_core = bcma_find_core_reverse(bus, core->id.id);
477 core->core_unit = (other_core == NULL) ? 0 : other_core->core_unit + 1;
478
479 pr_info("Core %d found: %s "
480 "(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
481 core->core_index, bcma_device_name(&core->id),
482 core->id.manuf, core->id.id, core->id.rev,
483 core->id.class);
484
485 list_add(&core->list, &bus->cores);
486 }
487
488 if (bus->hosttype == BCMA_HOSTTYPE_SOC)
489 iounmap(eromptr);
490
491 return 0;
492}
493
494int __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
501 int err = -ENODEV;
502 int core_num = 0;
503
504 erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
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
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);
542 err = 0;
543 break;
544 }
545
546 if (bus->hosttype == BCMA_HOSTTYPE_SOC)
547 iounmap(eromptr);
548
549 return err;
550}