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sysfs: Remove support for tagged directories with untagged members (again)
[linux-btrfs-devel.git] / arch / mips / txx9 / rbtx4939 / setup.c
blob7dc0fafbec80b896c615ef5bacf3a41c63c26ac3
1 /*
2 * Toshiba RBTX4939 setup routines.
3 * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
4 * and RBTX49xx patch from CELF patch archive.
5 *
6 * Copyright (C) 2000-2001,2005-2007 Toshiba Corporation
7 * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
8 * terms of the GNU General Public License version 2. This program is
9 * licensed "as is" without any warranty of any kind, whether express
10 * or implied.
11 */
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/slab.h>
16 #include <linux/platform_device.h>
17 #include <linux/leds.h>
18 #include <linux/interrupt.h>
19 #include <linux/smc91x.h>
20 #include <linux/mtd/mtd.h>
21 #include <linux/mtd/partitions.h>
22 #include <linux/mtd/map.h>
23 #include <asm/reboot.h>
24 #include <asm/txx9/generic.h>
25 #include <asm/txx9/pci.h>
26 #include <asm/txx9/rbtx4939.h>
27
28 static void rbtx4939_machine_restart(char *command)
29 {
30 local_irq_disable();
31 writeb(1, rbtx4939_reseten_addr);
32 writeb(1, rbtx4939_softreset_addr);
33 while (1)
34 ;
35 }
36
37 static void __init rbtx4939_time_init(void)
38 {
39 tx4939_time_init(0);
40 }
41
42 #if defined(__BIG_ENDIAN) && \
43 (defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE))
44 #define HAVE_RBTX4939_IOSWAB
45 #define IS_CE1_ADDR(addr) \
46 ((((unsigned long)(addr) - IO_BASE) & 0xfff00000) == TXX9_CE(1))
47 static u16 rbtx4939_ioswabw(volatile u16 *a, u16 x)
48 {
49 return IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
50 }
51 static u16 rbtx4939_mem_ioswabw(volatile u16 *a, u16 x)
52 {
53 return !IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
54 }
55 #endif /* __BIG_ENDIAN && CONFIG_SMC91X */
56
57 static void __init rbtx4939_pci_setup(void)
58 {
59 #ifdef CONFIG_PCI
60 int extarb = !(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCIARB);
61 struct pci_controller *c = &txx9_primary_pcic;
62
63 register_pci_controller(c);
64
65 tx4939_report_pciclk();
66 tx4927_pcic_setup(tx4939_pcicptr, c, extarb);
67 if (!(__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_ATA1MODE) &&
68 (__raw_readq(&tx4939_ccfgptr->pcfg) &
69 (TX4939_PCFG_ET0MODE | TX4939_PCFG_ET1MODE))) {
70 tx4939_report_pci1clk();
71
72 /* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
73 c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
74 register_pci_controller(c);
75 tx4927_pcic_setup(tx4939_pcic1ptr, c, 0);
76 }
77
78 tx4939_setup_pcierr_irq();
79 #endif /* CONFIG_PCI */
80 }
81
82 static unsigned long long default_ebccr[] __initdata = {
83 0x01c0000000007608ULL, /* 64M ROM */
84 0x017f000000007049ULL, /* 1M IOC */
85 0x0180000000408608ULL, /* ISA */
86 0,
87 };
88
89 static void __init rbtx4939_ebusc_setup(void)
90 {
91 int i;
92 unsigned int sp;
93
94 /* use user-configured speed */
95 sp = TX4939_EBUSC_CR(0) & 0x30;
96 default_ebccr[0] |= sp;
97 default_ebccr[1] |= sp;
98 default_ebccr[2] |= sp;
99 /* initialise by myself */
100 for (i = 0; i < ARRAY_SIZE(default_ebccr); i++) {
101 if (default_ebccr[i])
102 ____raw_writeq(default_ebccr[i],
103 &tx4939_ebuscptr->cr[i]);
104 else
105 ____raw_writeq(____raw_readq(&tx4939_ebuscptr->cr[i])
106 & ~8,
107 &tx4939_ebuscptr->cr[i]);
108 }
109 }
110
111 static void __init rbtx4939_update_ioc_pen(void)
112 {
113 __u64 pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
114 __u64 ccfg = ____raw_readq(&tx4939_ccfgptr->ccfg);
115 __u8 pe1 = readb(rbtx4939_pe1_addr);
116 __u8 pe2 = readb(rbtx4939_pe2_addr);
117 __u8 pe3 = readb(rbtx4939_pe3_addr);
118 if (pcfg & TX4939_PCFG_ATA0MODE)
119 pe1 |= RBTX4939_PE1_ATA(0);
120 else
121 pe1 &= ~RBTX4939_PE1_ATA(0);
122 if (pcfg & TX4939_PCFG_ATA1MODE) {
123 pe1 |= RBTX4939_PE1_ATA(1);
124 pe1 &= ~(RBTX4939_PE1_RMII(0) | RBTX4939_PE1_RMII(1));
125 } else {
126 pe1 &= ~RBTX4939_PE1_ATA(1);
127 if (pcfg & TX4939_PCFG_ET0MODE)
128 pe1 |= RBTX4939_PE1_RMII(0);
129 else
130 pe1 &= ~RBTX4939_PE1_RMII(0);
131 if (pcfg & TX4939_PCFG_ET1MODE)
132 pe1 |= RBTX4939_PE1_RMII(1);
133 else
134 pe1 &= ~RBTX4939_PE1_RMII(1);
135 }
136 if (ccfg & TX4939_CCFG_PTSEL)
137 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
138 RBTX4939_PE3_VP_S);
139 else {
140 __u64 vmode = pcfg &
141 (TX4939_PCFG_VSSMODE | TX4939_PCFG_VPSMODE);
142 if (vmode == 0)
143 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
144 RBTX4939_PE3_VP_S);
145 else if (vmode == TX4939_PCFG_VPSMODE) {
146 pe3 |= RBTX4939_PE3_VP_P;
147 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_S);
148 } else if (vmode == TX4939_PCFG_VSSMODE) {
149 pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_S;
150 pe3 &= ~RBTX4939_PE3_VP_P;
151 } else {
152 pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_P;
153 pe3 &= ~RBTX4939_PE3_VP_S;
154 }
155 }
156 if (pcfg & TX4939_PCFG_SPIMODE) {
157 if (pcfg & TX4939_PCFG_SIO2MODE_GPIO)
158 pe2 &= ~(RBTX4939_PE2_SIO2 | RBTX4939_PE2_SIO0);
159 else {
160 if (pcfg & TX4939_PCFG_SIO2MODE_SIO2) {
161 pe2 |= RBTX4939_PE2_SIO2;
162 pe2 &= ~RBTX4939_PE2_SIO0;
163 } else {
164 pe2 |= RBTX4939_PE2_SIO0;
165 pe2 &= ~RBTX4939_PE2_SIO2;
166 }
167 }
168 if (pcfg & TX4939_PCFG_SIO3MODE)
169 pe2 |= RBTX4939_PE2_SIO3;
170 else
171 pe2 &= ~RBTX4939_PE2_SIO3;
172 pe2 &= ~RBTX4939_PE2_SPI;
173 } else {
174 pe2 |= RBTX4939_PE2_SPI;
175 pe2 &= ~(RBTX4939_PE2_SIO3 | RBTX4939_PE2_SIO2 |
176 RBTX4939_PE2_SIO0);
177 }
178 if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_GPIO)
179 pe2 |= RBTX4939_PE2_GPIO;
180 else
181 pe2 &= ~RBTX4939_PE2_GPIO;
182 writeb(pe1, rbtx4939_pe1_addr);
183 writeb(pe2, rbtx4939_pe2_addr);
184 writeb(pe3, rbtx4939_pe3_addr);
185 }
186
187 #define RBTX4939_MAX_7SEGLEDS 8
188
189 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
190 static u8 led_val[RBTX4939_MAX_7SEGLEDS];
191 struct rbtx4939_led_data {
192 struct led_classdev cdev;
193 char name[32];
194 unsigned int num;
195 };
196
197 /* Use "dot" in 7seg LEDs */
198 static void rbtx4939_led_brightness_set(struct led_classdev *led_cdev,
199 enum led_brightness value)
200 {
201 struct rbtx4939_led_data *led_dat =
202 container_of(led_cdev, struct rbtx4939_led_data, cdev);
203 unsigned int num = led_dat->num;
204 unsigned long flags;
205
206 local_irq_save(flags);
207 led_val[num] = (led_val[num] & 0x7f) | (value ? 0x80 : 0);
208 writeb(led_val[num], rbtx4939_7seg_addr(num / 4, num % 4));
209 local_irq_restore(flags);
210 }
211
212 static int __init rbtx4939_led_probe(struct platform_device *pdev)
213 {
214 struct rbtx4939_led_data *leds_data;
215 int i;
216 static char *default_triggers[] __initdata = {
217 "heartbeat",
218 "ide-disk",
219 "nand-disk",
220 };
221
222 leds_data = kzalloc(sizeof(*leds_data) * RBTX4939_MAX_7SEGLEDS,
223 GFP_KERNEL);
224 if (!leds_data)
225 return -ENOMEM;
226 for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++) {
227 int rc;
228 struct rbtx4939_led_data *led_dat = &leds_data[i];
229
230 led_dat->num = i;
231 led_dat->cdev.brightness_set = rbtx4939_led_brightness_set;
232 sprintf(led_dat->name, "rbtx4939:amber:%u", i);
233 led_dat->cdev.name = led_dat->name;
234 if (i < ARRAY_SIZE(default_triggers))
235 led_dat->cdev.default_trigger = default_triggers[i];
236 rc = led_classdev_register(&pdev->dev, &led_dat->cdev);
237 if (rc < 0)
238 return rc;
239 led_dat->cdev.brightness_set(&led_dat->cdev, 0);
240 }
241 return 0;
242
243 }
244
245 static struct platform_driver rbtx4939_led_driver = {
246 .driver = {
247 .name = "rbtx4939-led",
248 .owner = THIS_MODULE,
249 },
250 };
251
252 static void __init rbtx4939_led_setup(void)
253 {
254 platform_device_register_simple("rbtx4939-led", -1, NULL, 0);
255 platform_driver_probe(&rbtx4939_led_driver, rbtx4939_led_probe);
256 }
257 #else
258 static inline void rbtx4939_led_setup(void)
259 {
260 }
261 #endif
262
263 static void __rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
264 {
265 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
266 unsigned long flags;
267 local_irq_save(flags);
268 /* bit7: reserved for LED class */
269 led_val[pos] = (led_val[pos] & 0x80) | (val & 0x7f);
270 val = led_val[pos];
271 local_irq_restore(flags);
272 #endif
273 writeb(val, rbtx4939_7seg_addr(pos / 4, pos % 4));
274 }
275
276 static void rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
277 {
278 /* convert from map_to_seg7() notation */
279 val = (val & 0x88) |
280 ((val & 0x40) >> 6) |
281 ((val & 0x20) >> 4) |
282 ((val & 0x10) >> 2) |
283 ((val & 0x04) << 2) |
284 ((val & 0x02) << 4) |
285 ((val & 0x01) << 6);
286 __rbtx4939_7segled_putc(pos, val);
287 }
288
289 #if defined(CONFIG_MTD_RBTX4939) || defined(CONFIG_MTD_RBTX4939_MODULE)
290 /* special mapping for boot rom */
291 static unsigned long rbtx4939_flash_fixup_ofs(unsigned long ofs)
292 {
293 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
294 unsigned char shift;
295
296 if (bdipsw & 8) {
297 /* BOOT Mode: USER ROM1 / USER ROM2 */
298 shift = bdipsw & 3;
299 /* rotate A[23:22] */
300 return (ofs & ~0xc00000) | ((((ofs >> 22) + shift) & 3) << 22);
301 }
302 #ifdef __BIG_ENDIAN
303 if (bdipsw == 0)
304 /* BOOT Mode: Monitor ROM */
305 ofs ^= 0x400000; /* swap A[22] */
306 #endif
307 return ofs;
308 }
309
310 static map_word rbtx4939_flash_read16(struct map_info *map, unsigned long ofs)
311 {
312 map_word r;
313
314 ofs = rbtx4939_flash_fixup_ofs(ofs);
315 r.x[0] = __raw_readw(map->virt + ofs);
316 return r;
317 }
318
319 static void rbtx4939_flash_write16(struct map_info *map, const map_word datum,
320 unsigned long ofs)
321 {
322 ofs = rbtx4939_flash_fixup_ofs(ofs);
323 __raw_writew(datum.x[0], map->virt + ofs);
324 mb(); /* see inline_map_write() in mtd/map.h */
325 }
326
327 static void rbtx4939_flash_copy_from(struct map_info *map, void *to,
328 unsigned long from, ssize_t len)
329 {
330 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
331 unsigned char shift;
332 ssize_t curlen;
333
334 from += (unsigned long)map->virt;
335 if (bdipsw & 8) {
336 /* BOOT Mode: USER ROM1 / USER ROM2 */
337 shift = bdipsw & 3;
338 while (len) {
339 curlen = min_t(unsigned long, len,
340 0x400000 - (from & (0x400000 - 1)));
341 memcpy(to,
342 (void *)((from & ~0xc00000) |
343 ((((from >> 22) + shift) & 3) << 22)),
344 curlen);
345 len -= curlen;
346 from += curlen;
347 to += curlen;
348 }
349 return;
350 }
351 #ifdef __BIG_ENDIAN
352 if (bdipsw == 0) {
353 /* BOOT Mode: Monitor ROM */
354 while (len) {
355 curlen = min_t(unsigned long, len,
356 0x400000 - (from & (0x400000 - 1)));
357 memcpy(to, (void *)(from ^ 0x400000), curlen);
358 len -= curlen;
359 from += curlen;
360 to += curlen;
361 }
362 return;
363 }
364 #endif
365 memcpy(to, (void *)from, len);
366 }
367
368 static void rbtx4939_flash_map_init(struct map_info *map)
369 {
370 map->read = rbtx4939_flash_read16;
371 map->write = rbtx4939_flash_write16;
372 map->copy_from = rbtx4939_flash_copy_from;
373 }
374
375 static void __init rbtx4939_mtd_init(void)
376 {
377 static struct {
378 struct platform_device dev;
379 struct resource res;
380 struct rbtx4939_flash_data data;
381 } pdevs[4];
382 int i;
383 static char names[4][8];
384 static struct mtd_partition parts[4];
385 struct rbtx4939_flash_data *boot_pdata = &pdevs[0].data;
386 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
387
388 if (bdipsw & 8) {
389 /* BOOT Mode: USER ROM1 / USER ROM2 */
390 boot_pdata->nr_parts = 4;
391 for (i = 0; i < boot_pdata->nr_parts; i++) {
392 sprintf(names[i], "img%d", 4 - i);
393 parts[i].name = names[i];
394 parts[i].size = 0x400000;
395 parts[i].offset = MTDPART_OFS_NXTBLK;
396 }
397 } else if (bdipsw == 0) {
398 /* BOOT Mode: Monitor ROM */
399 boot_pdata->nr_parts = 2;
400 strcpy(names[0], "big");
401 strcpy(names[1], "little");
402 for (i = 0; i < boot_pdata->nr_parts; i++) {
403 parts[i].name = names[i];
404 parts[i].size = 0x400000;
405 parts[i].offset = MTDPART_OFS_NXTBLK;
406 }
407 } else {
408 /* BOOT Mode: ROM Emulator */
409 boot_pdata->nr_parts = 2;
410 parts[0].name = "boot";
411 parts[0].offset = 0xc00000;
412 parts[0].size = 0x400000;
413 parts[1].name = "user";
414 parts[1].offset = 0;
415 parts[1].size = 0xc00000;
416 }
417 boot_pdata->parts = parts;
418 boot_pdata->map_init = rbtx4939_flash_map_init;
419
420 for (i = 0; i < ARRAY_SIZE(pdevs); i++) {
421 struct resource *r = &pdevs[i].res;
422 struct platform_device *dev = &pdevs[i].dev;
423
424 r->start = 0x1f000000 - i * 0x1000000;
425 r->end = r->start + 0x1000000 - 1;
426 r->flags = IORESOURCE_MEM;
427 pdevs[i].data.width = 2;
428 dev->num_resources = 1;
429 dev->resource = r;
430 dev->id = i;
431 dev->name = "rbtx4939-flash";
432 dev->dev.platform_data = &pdevs[i].data;
433 platform_device_register(dev);
434 }
435 }
436 #else
437 static void __init rbtx4939_mtd_init(void)
438 {
439 }
440 #endif
441
442 static void __init rbtx4939_arch_init(void)
443 {
444 rbtx4939_pci_setup();
445 }
446
447 static void __init rbtx4939_device_init(void)
448 {
449 unsigned long smc_addr = RBTX4939_ETHER_ADDR - IO_BASE;
450 struct resource smc_res[] = {
451 {
452 .start = smc_addr,
453 .end = smc_addr + 0x10 - 1,
454 .flags = IORESOURCE_MEM,
455 }, {
456 .start = RBTX4939_IRQ_ETHER,
457 /* override default irq flag defined in smc91x.h */
458 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
459 },
460 };
461 struct smc91x_platdata smc_pdata = {
462 .flags = SMC91X_USE_16BIT,
463 };
464 struct platform_device *pdev;
465 #if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
466 int i, j;
467 unsigned char ethaddr[2][6];
468 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
469
470 for (i = 0; i < 2; i++) {
471 unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
472 if (bdipsw == 0)
473 memcpy(ethaddr[i], (void *)area, 6);
474 else {
475 u16 buf[3];
476 if (bdipsw & 8)
477 area -= 0x03000000;
478 else
479 area -= 0x01000000;
480 for (j = 0; j < 3; j++)
481 buf[j] = le16_to_cpup((u16 *)(area + j * 2));
482 memcpy(ethaddr[i], buf, 6);
483 }
484 }
485 tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
486 #endif
487 pdev = platform_device_alloc("smc91x", -1);
488 if (!pdev ||
489 platform_device_add_resources(pdev, smc_res, ARRAY_SIZE(smc_res)) ||
490 platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
491 platform_device_add(pdev))
492 platform_device_put(pdev);
493 rbtx4939_mtd_init();
494 /* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
495 tx4939_ndfmc_init(10, 35,
496 (1 << 1) | (1 << 2),
497 (1 << 2)); /* ch1:8bit, ch2:16bit */
498 rbtx4939_led_setup();
499 tx4939_wdt_init();
500 tx4939_ata_init();
501 tx4939_rtc_init();
502 tx4939_dmac_init(0, 2);
503 tx4939_aclc_init();
504 platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
505 tx4939_sramc_init();
506 tx4939_rng_init();
507 }
508
509 static void __init rbtx4939_setup(void)
510 {
511 int i;
512
513 rbtx4939_ebusc_setup();
514 /* always enable ATA0 */
515 txx9_set64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_ATA0MODE);
516 if (txx9_master_clock == 0)
517 txx9_master_clock = 20000000;
518 tx4939_setup();
519 rbtx4939_update_ioc_pen();
520 #ifdef HAVE_RBTX4939_IOSWAB
521 ioswabw = rbtx4939_ioswabw;
522 __mem_ioswabw = rbtx4939_mem_ioswabw;
523 #endif
524
525 _machine_restart = rbtx4939_machine_restart;
526
527 txx9_7segled_init(RBTX4939_MAX_7SEGLEDS, rbtx4939_7segled_putc);
528 for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++)
529 txx9_7segled_putc(i, '-');
530 pr_info("RBTX4939 (Rev %02x) --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
531 readb(rbtx4939_board_rev_addr), readb(rbtx4939_ioc_rev_addr),
532 readb(rbtx4939_udipsw_addr), readb(rbtx4939_bdipsw_addr));
533
534 #ifdef CONFIG_PCI
535 txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
536 txx9_board_pcibios_setup = tx4927_pcibios_setup;
537 #else
538 set_io_port_base(RBTX4939_ETHER_BASE);
539 #endif
540
541 tx4939_sio_init(TX4939_SCLK0(txx9_master_clock), 0);
542 }
543
544 struct txx9_board_vec rbtx4939_vec __initdata = {
545 .system = "Toshiba RBTX4939",
546 .prom_init = rbtx4939_prom_init,
547 .mem_setup = rbtx4939_setup,
548 .irq_setup = rbtx4939_irq_setup,
549 .time_init = rbtx4939_time_init,
550 .device_init = rbtx4939_device_init,
551 .arch_init = rbtx4939_arch_init,
552 #ifdef CONFIG_PCI
553 .pci_map_irq = tx4939_pci_map_irq,
554 #endif
555 };
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