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13#include "bcma_private.h"
14
15#include <linux/bcma/bcma.h>
16
17#include <linux/serial.h>
18#include <linux/serial_core.h>
19#include <linux/serial_reg.h>
20#include <linux/time.h>
21#ifdef CONFIG_BCM47XX
22#include <linux/bcm47xx_nvram.h>
23#endif
24
25enum bcma_boot_dev {
26 BCMA_BOOT_DEV_UNK = 0,
27 BCMA_BOOT_DEV_ROM,
28 BCMA_BOOT_DEV_PARALLEL,
29 BCMA_BOOT_DEV_SERIAL,
30 BCMA_BOOT_DEV_NAND,
31};
32
33
34static inline bool bcma_core_mips_bcm47162a0_quirk(struct bcma_device *dev)
35{
36 return dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM47162 &&
37 dev->bus->chipinfo.rev == 0 && dev->id.id == BCMA_CORE_MIPS_74K;
38}
39
40
41static inline bool bcma_core_mips_bcm5357b0_quirk(struct bcma_device *dev)
42{
43 return (dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 ||
44 dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4749) &&
45 dev->bus->chipinfo.pkg == 11 &&
46 dev->id.id == BCMA_CORE_USB20_HOST;
47}
48
49static inline u32 mips_read32(struct bcma_drv_mips *mcore,
50 u16 offset)
51{
52 return bcma_read32(mcore->core, offset);
53}
54
55static inline void mips_write32(struct bcma_drv_mips *mcore,
56 u16 offset,
57 u32 value)
58{
59 bcma_write32(mcore->core, offset, value);
60}
61
62static u32 bcma_core_mips_irqflag(struct bcma_device *dev)
63{
64 u32 flag;
65
66 if (bcma_core_mips_bcm47162a0_quirk(dev))
67 return dev->core_index;
68 if (bcma_core_mips_bcm5357b0_quirk(dev))
69 return dev->core_index;
70 flag = bcma_aread32(dev, BCMA_MIPS_OOBSELOUTA30);
71
72 if (flag)
73 return flag & 0x1F;
74 else
75 return 0x3f;
76}
77
78
79
80
81
82
83unsigned int bcma_core_mips_irq(struct bcma_device *dev)
84{
85 struct bcma_device *mdev = dev->bus->drv_mips.core;
86 u32 irqflag;
87 unsigned int irq;
88
89 irqflag = bcma_core_mips_irqflag(dev);
90 if (irqflag == 0x3f)
91 return 6;
92
93 for (irq = 0; irq <= 4; irq++)
94 if (bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq)) &
95 (1 << irqflag))
96 return irq;
97
98 return 5;
99}
100
101static void bcma_core_mips_set_irq(struct bcma_device *dev, unsigned int irq)
102{
103 unsigned int oldirq = bcma_core_mips_irq(dev);
104 struct bcma_bus *bus = dev->bus;
105 struct bcma_device *mdev = bus->drv_mips.core;
106 u32 irqflag;
107
108 irqflag = bcma_core_mips_irqflag(dev);
109 BUG_ON(oldirq == 6);
110
111 dev->irq = irq + 2;
112
113
114 if (oldirq == 0)
115 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0),
116 bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) &
117 ~(1 << irqflag));
118 else if (oldirq != 5)
119 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(oldirq), 0);
120
121
122 if (irq == 0) {
123 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0),
124 bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) |
125 (1 << irqflag));
126 } else {
127 u32 irqinitmask = bcma_read32(mdev,
128 BCMA_MIPS_MIPS74K_INTMASK(irq));
129 if (irqinitmask) {
130 struct bcma_device *core;
131
132
133
134
135 list_for_each_entry(core, &bus->cores, list) {
136 if ((1 << bcma_core_mips_irqflag(core)) ==
137 irqinitmask) {
138 bcma_core_mips_set_irq(core, 0);
139 break;
140 }
141 }
142 }
143 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq),
144 1 << irqflag);
145 }
146
147 bcma_debug(bus, "set_irq: core 0x%04x, irq %d => %d\n",
148 dev->id.id, oldirq <= 4 ? oldirq + 2 : 0, irq + 2);
149}
150
151static void bcma_core_mips_set_irq_name(struct bcma_bus *bus, unsigned int irq,
152 u16 coreid, u8 unit)
153{
154 struct bcma_device *core;
155
156 core = bcma_find_core_unit(bus, coreid, unit);
157 if (!core) {
158 bcma_warn(bus,
159 "Can not find core (id: 0x%x, unit %i) for IRQ configuration.\n",
160 coreid, unit);
161 return;
162 }
163
164 bcma_core_mips_set_irq(core, irq);
165}
166
167static void bcma_core_mips_print_irq(struct bcma_device *dev, unsigned int irq)
168{
169 int i;
170 static const char *irq_name[] = {"2(S)", "3", "4", "5", "6", "D", "I"};
171 char interrupts[25];
172 char *ints = interrupts;
173
174 for (i = 0; i < ARRAY_SIZE(irq_name); i++)
175 ints += sprintf(ints, " %s%c",
176 irq_name[i], i == irq ? '*' : ' ');
177
178 bcma_debug(dev->bus, "core 0x%04x, irq:%s\n", dev->id.id, interrupts);
179}
180
181static void bcma_core_mips_dump_irq(struct bcma_bus *bus)
182{
183 struct bcma_device *core;
184
185 list_for_each_entry(core, &bus->cores, list) {
186 bcma_core_mips_print_irq(core, bcma_core_mips_irq(core));
187 }
188}
189
190u32 bcma_cpu_clock(struct bcma_drv_mips *mcore)
191{
192 struct bcma_bus *bus = mcore->core->bus;
193
194 if (bus->drv_cc.capabilities & BCMA_CC_CAP_PMU)
195 return bcma_pmu_get_cpu_clock(&bus->drv_cc);
196
197 bcma_err(bus, "No PMU available, need this to get the cpu clock\n");
198 return 0;
199}
200EXPORT_SYMBOL(bcma_cpu_clock);
201
202static enum bcma_boot_dev bcma_boot_dev(struct bcma_bus *bus)
203{
204 struct bcma_drv_cc *cc = &bus->drv_cc;
205 u8 cc_rev = cc->core->id.rev;
206
207 if (cc_rev == 42) {
208 struct bcma_device *core;
209
210 core = bcma_find_core(bus, BCMA_CORE_NS_ROM);
211 if (core) {
212 switch (bcma_aread32(core, BCMA_IOST) &
213 BCMA_NS_ROM_IOST_BOOT_DEV_MASK) {
214 case BCMA_NS_ROM_IOST_BOOT_DEV_NOR:
215 return BCMA_BOOT_DEV_SERIAL;
216 case BCMA_NS_ROM_IOST_BOOT_DEV_NAND:
217 return BCMA_BOOT_DEV_NAND;
218 case BCMA_NS_ROM_IOST_BOOT_DEV_ROM:
219 default:
220 return BCMA_BOOT_DEV_ROM;
221 }
222 }
223 } else {
224 if (cc_rev == 38) {
225 if (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT)
226 return BCMA_BOOT_DEV_NAND;
227 else if (cc->status & BIT(5))
228 return BCMA_BOOT_DEV_ROM;
229 }
230
231 if ((cc->capabilities & BCMA_CC_CAP_FLASHT) ==
232 BCMA_CC_FLASHT_PARA)
233 return BCMA_BOOT_DEV_PARALLEL;
234 else
235 return BCMA_BOOT_DEV_SERIAL;
236 }
237
238 return BCMA_BOOT_DEV_SERIAL;
239}
240
241static void bcma_core_mips_nvram_init(struct bcma_drv_mips *mcore)
242{
243 struct bcma_bus *bus = mcore->core->bus;
244 enum bcma_boot_dev boot_dev;
245
246
247 boot_dev = bcma_boot_dev(bus);
248 switch (boot_dev) {
249 case BCMA_BOOT_DEV_PARALLEL:
250 case BCMA_BOOT_DEV_SERIAL:
251#ifdef CONFIG_BCM47XX
252 bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH2,
253 BCMA_SOC_FLASH2_SZ);
254#endif
255 break;
256 case BCMA_BOOT_DEV_NAND:
257#ifdef CONFIG_BCM47XX
258 bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH1,
259 BCMA_SOC_FLASH1_SZ);
260#endif
261 break;
262 default:
263 break;
264 }
265}
266
267void bcma_core_mips_early_init(struct bcma_drv_mips *mcore)
268{
269 struct bcma_bus *bus = mcore->core->bus;
270
271 if (mcore->early_setup_done)
272 return;
273
274 bcma_chipco_serial_init(&bus->drv_cc);
275 bcma_core_mips_nvram_init(mcore);
276
277 mcore->early_setup_done = true;
278}
279
280static void bcma_fix_i2s_irqflag(struct bcma_bus *bus)
281{
282 struct bcma_device *cpu, *pcie, *i2s;
283
284
285
286
287 if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4716 &&
288 bus->chipinfo.id != BCMA_CHIP_ID_BCM4748)
289 return;
290
291 cpu = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
292 pcie = bcma_find_core(bus, BCMA_CORE_PCIE);
293 i2s = bcma_find_core(bus, BCMA_CORE_I2S);
294 if (cpu && pcie && i2s &&
295 bcma_aread32(cpu, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
296 bcma_aread32(pcie, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
297 bcma_aread32(i2s, BCMA_MIPS_OOBSELOUTA30) == 0x88) {
298 bcma_awrite32(cpu, BCMA_MIPS_OOBSELINA74, 0x07060504);
299 bcma_awrite32(pcie, BCMA_MIPS_OOBSELINA74, 0x07060504);
300 bcma_awrite32(i2s, BCMA_MIPS_OOBSELOUTA30, 0x87);
301 bcma_debug(bus,
302 "Moved i2s interrupt to oob line 7 instead of 8\n");
303 }
304}
305
306void bcma_core_mips_init(struct bcma_drv_mips *mcore)
307{
308 struct bcma_bus *bus;
309 struct bcma_device *core;
310 bus = mcore->core->bus;
311
312 if (mcore->setup_done)
313 return;
314
315 bcma_debug(bus, "Initializing MIPS core...\n");
316
317 bcma_core_mips_early_init(mcore);
318
319 bcma_fix_i2s_irqflag(bus);
320
321 switch (bus->chipinfo.id) {
322 case BCMA_CHIP_ID_BCM4716:
323 case BCMA_CHIP_ID_BCM4748:
324 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_80211, 0);
325 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_MAC_GBIT, 0);
326 bcma_core_mips_set_irq_name(bus, 3, BCMA_CORE_USB20_HOST, 0);
327 bcma_core_mips_set_irq_name(bus, 4, BCMA_CORE_PCIE, 0);
328 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_CHIPCOMMON, 0);
329 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_I2S, 0);
330 break;
331 case BCMA_CHIP_ID_BCM5356:
332 case BCMA_CHIP_ID_BCM47162:
333 case BCMA_CHIP_ID_BCM53572:
334 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_80211, 0);
335 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_MAC_GBIT, 0);
336 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_CHIPCOMMON, 0);
337 break;
338 case BCMA_CHIP_ID_BCM5357:
339 case BCMA_CHIP_ID_BCM4749:
340 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_80211, 0);
341 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_MAC_GBIT, 0);
342 bcma_core_mips_set_irq_name(bus, 3, BCMA_CORE_USB20_HOST, 0);
343 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_CHIPCOMMON, 0);
344 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_I2S, 0);
345 break;
346 case BCMA_CHIP_ID_BCM4706:
347 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_PCIE, 0);
348 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_4706_MAC_GBIT,
349 0);
350 bcma_core_mips_set_irq_name(bus, 3, BCMA_CORE_PCIE, 1);
351 bcma_core_mips_set_irq_name(bus, 4, BCMA_CORE_USB20_HOST, 0);
352 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_4706_CHIPCOMMON,
353 0);
354 break;
355 default:
356 list_for_each_entry(core, &bus->cores, list) {
357 core->irq = bcma_core_irq(core, 0);
358 }
359 bcma_err(bus,
360 "Unknown device (0x%x) found, can not configure IRQs\n",
361 bus->chipinfo.id);
362 }
363 bcma_debug(bus, "IRQ reconfiguration done\n");
364 bcma_core_mips_dump_irq(bus);
365
366 mcore->setup_done = true;
367}
368
