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blk: rq_data_dir() should not return a boolean
[cris-mirror.git] / arch / mips / txx9 / rbtx4939 / setup.c
blob37030409745c3b41ba428b57f8b7d304dd7d6b0d
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/export.h>
17 #include <linux/platform_device.h>
18 #include <linux/leds.h>
19 #include <linux/interrupt.h>
20 #include <linux/smc91x.h>
21 #include <linux/mtd/mtd.h>
22 #include <linux/mtd/partitions.h>
23 #include <linux/mtd/map.h>
24 #include <asm/reboot.h>
25 #include <asm/txx9/generic.h>
26 #include <asm/txx9/pci.h>
27 #include <asm/txx9/rbtx4939.h>
28
29 static void rbtx4939_machine_restart(char *command)
30 {
31 local_irq_disable();
32 writeb(1, rbtx4939_reseten_addr);
33 writeb(1, rbtx4939_softreset_addr);
34 while (1)
35 ;
36 }
37
38 static void __init rbtx4939_time_init(void)
39 {
40 tx4939_time_init(0);
41 }
42
43 #if defined(__BIG_ENDIAN) && IS_ENABLED(CONFIG_SMC91X)
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 IS_ENABLED(CONFIG_LEDS_CLASS)
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 },
249 };
250
251 static void __init rbtx4939_led_setup(void)
252 {
253 platform_device_register_simple("rbtx4939-led", -1, NULL, 0);
254 platform_driver_probe(&rbtx4939_led_driver, rbtx4939_led_probe);
255 }
256 #else
257 static inline void rbtx4939_led_setup(void)
258 {
259 }
260 #endif
261
262 static void __rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
263 {
264 #if IS_ENABLED(CONFIG_LEDS_CLASS)
265 unsigned long flags;
266 local_irq_save(flags);
267 /* bit7: reserved for LED class */
268 led_val[pos] = (led_val[pos] & 0x80) | (val & 0x7f);
269 val = led_val[pos];
270 local_irq_restore(flags);
271 #endif
272 writeb(val, rbtx4939_7seg_addr(pos / 4, pos % 4));
273 }
274
275 static void rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
276 {
277 /* convert from map_to_seg7() notation */
278 val = (val & 0x88) |
279 ((val & 0x40) >> 6) |
280 ((val & 0x20) >> 4) |
281 ((val & 0x10) >> 2) |
282 ((val & 0x04) << 2) |
283 ((val & 0x02) << 4) |
284 ((val & 0x01) << 6);
285 __rbtx4939_7segled_putc(pos, val);
286 }
287
288 #if IS_ENABLED(CONFIG_MTD_RBTX4939)
289 /* special mapping for boot rom */
290 static unsigned long rbtx4939_flash_fixup_ofs(unsigned long ofs)
291 {
292 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
293 unsigned char shift;
294
295 if (bdipsw & 8) {
296 /* BOOT Mode: USER ROM1 / USER ROM2 */
297 shift = bdipsw & 3;
298 /* rotate A[23:22] */
299 return (ofs & ~0xc00000) | ((((ofs >> 22) + shift) & 3) << 22);
300 }
301 #ifdef __BIG_ENDIAN
302 if (bdipsw == 0)
303 /* BOOT Mode: Monitor ROM */
304 ofs ^= 0x400000; /* swap A[22] */
305 #endif
306 return ofs;
307 }
308
309 static map_word rbtx4939_flash_read16(struct map_info *map, unsigned long ofs)
310 {
311 map_word r;
312
313 ofs = rbtx4939_flash_fixup_ofs(ofs);
314 r.x[0] = __raw_readw(map->virt + ofs);
315 return r;
316 }
317
318 static void rbtx4939_flash_write16(struct map_info *map, const map_word datum,
319 unsigned long ofs)
320 {
321 ofs = rbtx4939_flash_fixup_ofs(ofs);
322 __raw_writew(datum.x[0], map->virt + ofs);
323 mb(); /* see inline_map_write() in mtd/map.h */
324 }
325
326 static void rbtx4939_flash_copy_from(struct map_info *map, void *to,
327 unsigned long from, ssize_t len)
328 {
329 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
330 unsigned char shift;
331 ssize_t curlen;
332
333 from += (unsigned long)map->virt;
334 if (bdipsw & 8) {
335 /* BOOT Mode: USER ROM1 / USER ROM2 */
336 shift = bdipsw & 3;
337 while (len) {
338 curlen = min_t(unsigned long, len,
339 0x400000 - (from & (0x400000 - 1)));
340 memcpy(to,
341 (void *)((from & ~0xc00000) |
342 ((((from >> 22) + shift) & 3) << 22)),
343 curlen);
344 len -= curlen;
345 from += curlen;
346 to += curlen;
347 }
348 return;
349 }
350 #ifdef __BIG_ENDIAN
351 if (bdipsw == 0) {
352 /* BOOT Mode: Monitor ROM */
353 while (len) {
354 curlen = min_t(unsigned long, len,
355 0x400000 - (from & (0x400000 - 1)));
356 memcpy(to, (void *)(from ^ 0x400000), curlen);
357 len -= curlen;
358 from += curlen;
359 to += curlen;
360 }
361 return;
362 }
363 #endif
364 memcpy(to, (void *)from, len);
365 }
366
367 static void rbtx4939_flash_map_init(struct map_info *map)
368 {
369 map->read = rbtx4939_flash_read16;
370 map->write = rbtx4939_flash_write16;
371 map->copy_from = rbtx4939_flash_copy_from;
372 }
373
374 static void __init rbtx4939_mtd_init(void)
375 {
376 static struct {
377 struct platform_device dev;
378 struct resource res;
379 struct rbtx4939_flash_data data;
380 } pdevs[4];
381 int i;
382 static char names[4][8];
383 static struct mtd_partition parts[4];
384 struct rbtx4939_flash_data *boot_pdata = &pdevs[0].data;
385 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
386
387 if (bdipsw & 8) {
388 /* BOOT Mode: USER ROM1 / USER ROM2 */
389 boot_pdata->nr_parts = 4;
390 for (i = 0; i < boot_pdata->nr_parts; i++) {
391 sprintf(names[i], "img%d", 4 - i);
392 parts[i].name = names[i];
393 parts[i].size = 0x400000;
394 parts[i].offset = MTDPART_OFS_NXTBLK;
395 }
396 } else if (bdipsw == 0) {
397 /* BOOT Mode: Monitor ROM */
398 boot_pdata->nr_parts = 2;
399 strcpy(names[0], "big");
400 strcpy(names[1], "little");
401 for (i = 0; i < boot_pdata->nr_parts; i++) {
402 parts[i].name = names[i];
403 parts[i].size = 0x400000;
404 parts[i].offset = MTDPART_OFS_NXTBLK;
405 }
406 } else {
407 /* BOOT Mode: ROM Emulator */
408 boot_pdata->nr_parts = 2;
409 parts[0].name = "boot";
410 parts[0].offset = 0xc00000;
411 parts[0].size = 0x400000;
412 parts[1].name = "user";
413 parts[1].offset = 0;
414 parts[1].size = 0xc00000;
415 }
416 boot_pdata->parts = parts;
417 boot_pdata->map_init = rbtx4939_flash_map_init;
418
419 for (i = 0; i < ARRAY_SIZE(pdevs); i++) {
420 struct resource *r = &pdevs[i].res;
421 struct platform_device *dev = &pdevs[i].dev;
422
423 r->start = 0x1f000000 - i * 0x1000000;
424 r->end = r->start + 0x1000000 - 1;
425 r->flags = IORESOURCE_MEM;
426 pdevs[i].data.width = 2;
427 dev->num_resources = 1;
428 dev->resource = r;
429 dev->id = i;
430 dev->name = "rbtx4939-flash";
431 dev->dev.platform_data = &pdevs[i].data;
432 platform_device_register(dev);
433 }
434 }
435 #else
436 static void __init rbtx4939_mtd_init(void)
437 {
438 }
439 #endif
440
441 static void __init rbtx4939_arch_init(void)
442 {
443 rbtx4939_pci_setup();
444 }
445
446 static void __init rbtx4939_device_init(void)
447 {
448 unsigned long smc_addr = RBTX4939_ETHER_ADDR - IO_BASE;
449 struct resource smc_res[] = {
450 {
451 .start = smc_addr,
452 .end = smc_addr + 0x10 - 1,
453 .flags = IORESOURCE_MEM,
454 }, {
455 .start = RBTX4939_IRQ_ETHER,
456 /* override default irq flag defined in smc91x.h */
457 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
458 },
459 };
460 struct smc91x_platdata smc_pdata = {
461 .flags = SMC91X_USE_16BIT,
462 };
463 struct platform_device *pdev;
464 #if IS_ENABLED(CONFIG_TC35815)
465 int i, j;
466 unsigned char ethaddr[2][6];
467 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
468
469 for (i = 0; i < 2; i++) {
470 unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
471 if (bdipsw == 0)
472 memcpy(ethaddr[i], (void *)area, 6);
473 else {
474 u16 buf[3];
475 if (bdipsw & 8)
476 area -= 0x03000000;
477 else
478 area -= 0x01000000;
479 for (j = 0; j < 3; j++)
480 buf[j] = le16_to_cpup((u16 *)(area + j * 2));
481 memcpy(ethaddr[i], buf, 6);
482 }
483 }
484 tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
485 #endif
486 pdev = platform_device_alloc("smc91x", -1);
487 if (!pdev ||
488 platform_device_add_resources(pdev, smc_res, ARRAY_SIZE(smc_res)) ||
489 platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
490 platform_device_add(pdev))
491 platform_device_put(pdev);
492 rbtx4939_mtd_init();
493 /* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
494 tx4939_ndfmc_init(10, 35,
495 (1 << 1) | (1 << 2),
496 (1 << 2)); /* ch1:8bit, ch2:16bit */
497 rbtx4939_led_setup();
498 tx4939_wdt_init();
499 tx4939_ata_init();
500 tx4939_rtc_init();
501 tx4939_dmac_init(0, 2);
502 tx4939_aclc_init();
503 platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
504 tx4939_sramc_init();
505 tx4939_rng_init();
506 }
507
508 static void __init rbtx4939_setup(void)
509 {
510 int i;
511
512 rbtx4939_ebusc_setup();
513 /* always enable ATA0 */
514 txx9_set64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_ATA0MODE);
515 if (txx9_master_clock == 0)
516 txx9_master_clock = 20000000;
517 tx4939_setup();
518 rbtx4939_update_ioc_pen();
519 #ifdef HAVE_RBTX4939_IOSWAB
520 ioswabw = rbtx4939_ioswabw;
521 __mem_ioswabw = rbtx4939_mem_ioswabw;
522 #endif
523
524 _machine_restart = rbtx4939_machine_restart;
525
526 txx9_7segled_init(RBTX4939_MAX_7SEGLEDS, rbtx4939_7segled_putc);
527 for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++)
528 txx9_7segled_putc(i, '-');
529 pr_info("RBTX4939 (Rev %02x) --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
530 readb(rbtx4939_board_rev_addr), readb(rbtx4939_ioc_rev_addr),
531 readb(rbtx4939_udipsw_addr), readb(rbtx4939_bdipsw_addr));
532
533 #ifdef CONFIG_PCI
534 txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
535 txx9_board_pcibios_setup = tx4927_pcibios_setup;
536 #else
537 set_io_port_base(RBTX4939_ETHER_BASE);
538 #endif
539
540 tx4939_sio_init(TX4939_SCLK0(txx9_master_clock), 0);
541 }
542
543 struct txx9_board_vec rbtx4939_vec __initdata = {
544 .system = "Toshiba RBTX4939",
545 .prom_init = rbtx4939_prom_init,
546 .mem_setup = rbtx4939_setup,
547 .irq_setup = rbtx4939_irq_setup,
548 .time_init = rbtx4939_time_init,
549 .device_init = rbtx4939_device_init,
550 .arch_init = rbtx4939_arch_init,
551 #ifdef CONFIG_PCI
552 .pci_map_irq = tx4939_pci_map_irq,
553 #endif
554 };
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