1
2
3
4
5
6
7
8
9
10
11
12
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 const u32 ipsflag_irq_mask[] = {
63 0,
64 BCMA_MIPS_IPSFLAG_IRQ1,
65 BCMA_MIPS_IPSFLAG_IRQ2,
66 BCMA_MIPS_IPSFLAG_IRQ3,
67 BCMA_MIPS_IPSFLAG_IRQ4,
68};
69
70static const u32 ipsflag_irq_shift[] = {
71 0,
72 BCMA_MIPS_IPSFLAG_IRQ1_SHIFT,
73 BCMA_MIPS_IPSFLAG_IRQ2_SHIFT,
74 BCMA_MIPS_IPSFLAG_IRQ3_SHIFT,
75 BCMA_MIPS_IPSFLAG_IRQ4_SHIFT,
76};
77
78static u32 bcma_core_mips_irqflag(struct bcma_device *dev)
79{
80 u32 flag;
81
82 if (bcma_core_mips_bcm47162a0_quirk(dev))
83 return dev->core_index;
84 if (bcma_core_mips_bcm5357b0_quirk(dev))
85 return dev->core_index;
86 flag = bcma_aread32(dev, BCMA_MIPS_OOBSELOUTA30);
87
88 if (flag)
89 return flag & 0x1F;
90 else
91 return 0x3f;
92}
93
94
95
96
97
98
99unsigned int bcma_core_mips_irq(struct bcma_device *dev)
100{
101 struct bcma_device *mdev = dev->bus->drv_mips.core;
102 u32 irqflag;
103 unsigned int irq;
104
105 irqflag = bcma_core_mips_irqflag(dev);
106 if (irqflag == 0x3f)
107 return 6;
108
109 for (irq = 0; irq <= 4; irq++)
110 if (bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq)) &
111 (1 << irqflag))
112 return irq;
113
114 return 5;
115}
116
117static void bcma_core_mips_set_irq(struct bcma_device *dev, unsigned int irq)
118{
119 unsigned int oldirq = bcma_core_mips_irq(dev);
120 struct bcma_bus *bus = dev->bus;
121 struct bcma_device *mdev = bus->drv_mips.core;
122 u32 irqflag;
123
124 irqflag = bcma_core_mips_irqflag(dev);
125 BUG_ON(oldirq == 6);
126
127 dev->irq = irq + 2;
128
129
130 if (oldirq == 0)
131 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0),
132 bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) &
133 ~(1 << irqflag));
134 else if (oldirq != 5)
135 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(oldirq), 0);
136
137
138 if (irq == 0) {
139 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0),
140 bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) |
141 (1 << irqflag));
142 } else {
143 u32 irqinitmask = bcma_read32(mdev,
144 BCMA_MIPS_MIPS74K_INTMASK(irq));
145 if (irqinitmask) {
146 struct bcma_device *core;
147
148
149
150
151 list_for_each_entry(core, &bus->cores, list) {
152 if ((1 << bcma_core_mips_irqflag(core)) ==
153 irqinitmask) {
154 bcma_core_mips_set_irq(core, 0);
155 break;
156 }
157 }
158 }
159 bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq),
160 1 << irqflag);
161 }
162
163 bcma_debug(bus, "set_irq: core 0x%04x, irq %d => %d\n",
164 dev->id.id, oldirq <= 4 ? oldirq + 2 : 0, irq + 2);
165}
166
167static void bcma_core_mips_set_irq_name(struct bcma_bus *bus, unsigned int irq,
168 u16 coreid, u8 unit)
169{
170 struct bcma_device *core;
171
172 core = bcma_find_core_unit(bus, coreid, unit);
173 if (!core) {
174 bcma_warn(bus,
175 "Can not find core (id: 0x%x, unit %i) for IRQ configuration.\n",
176 coreid, unit);
177 return;
178 }
179
180 bcma_core_mips_set_irq(core, irq);
181}
182
183static void bcma_core_mips_print_irq(struct bcma_device *dev, unsigned int irq)
184{
185 int i;
186 static const char *irq_name[] = {"2(S)", "3", "4", "5", "6", "D", "I"};
187 printk(KERN_DEBUG KBUILD_MODNAME ": core 0x%04x, irq :", dev->id.id);
188 for (i = 0; i <= 6; i++)
189 printk(" %s%s", irq_name[i], i == irq ? "*" : " ");
190 printk("\n");
191}
192
193static void bcma_core_mips_dump_irq(struct bcma_bus *bus)
194{
195 struct bcma_device *core;
196
197 list_for_each_entry(core, &bus->cores, list) {
198 bcma_core_mips_print_irq(core, bcma_core_mips_irq(core));
199 }
200}
201
202u32 bcma_cpu_clock(struct bcma_drv_mips *mcore)
203{
204 struct bcma_bus *bus = mcore->core->bus;
205
206 if (bus->drv_cc.capabilities & BCMA_CC_CAP_PMU)
207 return bcma_pmu_get_cpu_clock(&bus->drv_cc);
208
209 bcma_err(bus, "No PMU available, need this to get the cpu clock\n");
210 return 0;
211}
212EXPORT_SYMBOL(bcma_cpu_clock);
213
214static enum bcma_boot_dev bcma_boot_dev(struct bcma_bus *bus)
215{
216 struct bcma_drv_cc *cc = &bus->drv_cc;
217 u8 cc_rev = cc->core->id.rev;
218
219 if (cc_rev == 42) {
220 struct bcma_device *core;
221
222 core = bcma_find_core(bus, BCMA_CORE_NS_ROM);
223 if (core) {
224 switch (bcma_aread32(core, BCMA_IOST) &
225 BCMA_NS_ROM_IOST_BOOT_DEV_MASK) {
226 case BCMA_NS_ROM_IOST_BOOT_DEV_NOR:
227 return BCMA_BOOT_DEV_SERIAL;
228 case BCMA_NS_ROM_IOST_BOOT_DEV_NAND:
229 return BCMA_BOOT_DEV_NAND;
230 case BCMA_NS_ROM_IOST_BOOT_DEV_ROM:
231 default:
232 return BCMA_BOOT_DEV_ROM;
233 }
234 }
235 } else {
236 if (cc_rev == 38) {
237 if (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT)
238 return BCMA_BOOT_DEV_NAND;
239 else if (cc->status & BIT(5))
240 return BCMA_BOOT_DEV_ROM;
241 }
242
243 if ((cc->capabilities & BCMA_CC_CAP_FLASHT) ==
244 BCMA_CC_FLASHT_PARA)
245 return BCMA_BOOT_DEV_PARALLEL;
246 else
247 return BCMA_BOOT_DEV_SERIAL;
248 }
249
250 return BCMA_BOOT_DEV_SERIAL;
251}
252
253static void bcma_core_mips_nvram_init(struct bcma_drv_mips *mcore)
254{
255 struct bcma_bus *bus = mcore->core->bus;
256 enum bcma_boot_dev boot_dev;
257
258
259 boot_dev = bcma_boot_dev(bus);
260 switch (boot_dev) {
261 case BCMA_BOOT_DEV_PARALLEL:
262 case BCMA_BOOT_DEV_SERIAL:
263#ifdef CONFIG_BCM47XX
264 bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH2,
265 BCMA_SOC_FLASH2_SZ);
266#endif
267 break;
268 case BCMA_BOOT_DEV_NAND:
269#ifdef CONFIG_BCM47XX
270 bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH1,
271 BCMA_SOC_FLASH1_SZ);
272#endif
273 break;
274 default:
275 break;
276 }
277}
278
279void bcma_core_mips_early_init(struct bcma_drv_mips *mcore)
280{
281 if (mcore->early_setup_done)
282 return;
283
284 bcma_core_mips_nvram_init(mcore);
285
286 mcore->early_setup_done = true;
287}
288
289static void bcma_fix_i2s_irqflag(struct bcma_bus *bus)
290{
291 struct bcma_device *cpu, *pcie, *i2s;
292
293
294
295
296 if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4716 &&
297 bus->chipinfo.id != BCMA_CHIP_ID_BCM4748)
298 return;
299
300 cpu = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
301 pcie = bcma_find_core(bus, BCMA_CORE_PCIE);
302 i2s = bcma_find_core(bus, BCMA_CORE_I2S);
303 if (cpu && pcie && i2s &&
304 bcma_aread32(cpu, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
305 bcma_aread32(pcie, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
306 bcma_aread32(i2s, BCMA_MIPS_OOBSELOUTA30) == 0x88) {
307 bcma_awrite32(cpu, BCMA_MIPS_OOBSELINA74, 0x07060504);
308 bcma_awrite32(pcie, BCMA_MIPS_OOBSELINA74, 0x07060504);
309 bcma_awrite32(i2s, BCMA_MIPS_OOBSELOUTA30, 0x87);
310 bcma_debug(bus,
311 "Moved i2s interrupt to oob line 7 instead of 8\n");
312 }
313}
314
315void bcma_core_mips_init(struct bcma_drv_mips *mcore)
316{
317 struct bcma_bus *bus;
318 struct bcma_device *core;
319 bus = mcore->core->bus;
320
321 if (mcore->setup_done)
322 return;
323
324 bcma_debug(bus, "Initializing MIPS core...\n");
325
326 bcma_core_mips_early_init(mcore);
327
328 bcma_fix_i2s_irqflag(bus);
329
330 switch (bus->chipinfo.id) {
331 case BCMA_CHIP_ID_BCM4716:
332 case BCMA_CHIP_ID_BCM4748:
333 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_80211, 0);
334 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_MAC_GBIT, 0);
335 bcma_core_mips_set_irq_name(bus, 3, BCMA_CORE_USB20_HOST, 0);
336 bcma_core_mips_set_irq_name(bus, 4, BCMA_CORE_PCIE, 0);
337 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_CHIPCOMMON, 0);
338 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_I2S, 0);
339 break;
340 case BCMA_CHIP_ID_BCM5356:
341 case BCMA_CHIP_ID_BCM47162:
342 case BCMA_CHIP_ID_BCM53572:
343 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_80211, 0);
344 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_MAC_GBIT, 0);
345 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_CHIPCOMMON, 0);
346 break;
347 case BCMA_CHIP_ID_BCM5357:
348 case BCMA_CHIP_ID_BCM4749:
349 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_80211, 0);
350 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_MAC_GBIT, 0);
351 bcma_core_mips_set_irq_name(bus, 3, BCMA_CORE_USB20_HOST, 0);
352 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_CHIPCOMMON, 0);
353 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_I2S, 0);
354 break;
355 case BCMA_CHIP_ID_BCM4706:
356 bcma_core_mips_set_irq_name(bus, 1, BCMA_CORE_PCIE, 0);
357 bcma_core_mips_set_irq_name(bus, 2, BCMA_CORE_4706_MAC_GBIT,
358 0);
359 bcma_core_mips_set_irq_name(bus, 3, BCMA_CORE_PCIE, 1);
360 bcma_core_mips_set_irq_name(bus, 4, BCMA_CORE_USB20_HOST, 0);
361 bcma_core_mips_set_irq_name(bus, 0, BCMA_CORE_4706_CHIPCOMMON,
362 0);
363 break;
364 default:
365 list_for_each_entry(core, &bus->cores, list) {
366 core->irq = bcma_core_irq(core, 0);
367 }
368 bcma_err(bus,
369 "Unknown device (0x%x) found, can not configure IRQs\n",
370 bus->chipinfo.id);
371 }
372 bcma_debug(bus, "IRQ reconfiguration done\n");
373 bcma_core_mips_dump_irq(bus);
374
375 mcore->setup_done = true;
376}
377
