kernel/2.6.29.6-aldebaran-rt/arch/mips/txx9/rbtx4939/setup.c

   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/platform_device.h>
  16 #include <linux/leds.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/smc91x.h>
  19 #include <asm/reboot.h>
  20 #include <asm/txx9/generic.h>
  21 #include <asm/txx9/pci.h>
  22 #include <asm/txx9/rbtx4939.h>
  23
  24 static void rbtx4939_machine_restart(char *command)
  25 {
  26         local_irq_disable();
  27         writeb(1, rbtx4939_reseten_addr);
  28         writeb(1, rbtx4939_softreset_addr);
  29         while (1)
  30                 ;
  31 }
  32
  33 static void __init rbtx4939_time_init(void)
  34 {
  35         tx4939_time_init(0);
  36 }
  37
  38 #if defined(__BIG_ENDIAN) && \
  39         (defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE))
  40 #define HAVE_RBTX4939_IOSWAB
  41 #define IS_CE1_ADDR(addr) \
  42         ((((unsigned long)(addr) - IO_BASE) & 0xfff00000) == TXX9_CE(1))
  43 static u16 rbtx4939_ioswabw(volatile u16 *a, u16 x)
  44 {
  45         return IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
  46 }
  47 static u16 rbtx4939_mem_ioswabw(volatile u16 *a, u16 x)
  48 {
  49         return !IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
  50 }
  51 #endif /* __BIG_ENDIAN && CONFIG_SMC91X */
  52
  53 static void __init rbtx4939_pci_setup(void)
  54 {
  55 #ifdef CONFIG_PCI
  56         int extarb = !(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCIARB);
  57         struct pci_controller *c = &txx9_primary_pcic;
  58
  59         register_pci_controller(c);
  60
  61         tx4939_report_pciclk();
  62         tx4927_pcic_setup(tx4939_pcicptr, c, extarb);
  63         if (!(__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_ATA1MODE) &&
  64             (__raw_readq(&tx4939_ccfgptr->pcfg) &
  65              (TX4939_PCFG_ET0MODE | TX4939_PCFG_ET1MODE))) {
  66                 tx4939_report_pci1clk();
  67
  68                 /* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
  69                 c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
  70                 register_pci_controller(c);
  71                 tx4927_pcic_setup(tx4939_pcic1ptr, c, 0);
  72         }
  73
  74         tx4939_setup_pcierr_irq();
  75 #endif /* CONFIG_PCI */
  76 }
  77
  78 static unsigned long long default_ebccr[] __initdata = {
  79         0x01c0000000007608ULL, /* 64M ROM */
  80         0x017f000000007049ULL, /* 1M IOC */
  81         0x0180000000408608ULL, /* ISA */
  82         0,
  83 };
  84
  85 static void __init rbtx4939_ebusc_setup(void)
  86 {
  87         int i;
  88         unsigned int sp;
  89
  90         /* use user-configured speed */
  91         sp = TX4939_EBUSC_CR(0) & 0x30;
  92         default_ebccr[0] |= sp;
  93         default_ebccr[1] |= sp;
  94         default_ebccr[2] |= sp;
  95         /* initialise by myself */
  96         for (i = 0; i < ARRAY_SIZE(default_ebccr); i++) {
  97                 if (default_ebccr[i])
  98                         ____raw_writeq(default_ebccr[i],
  99                                        &tx4939_ebuscptr->cr[i]);
 100                 else
 101                         ____raw_writeq(____raw_readq(&tx4939_ebuscptr->cr[i])
 102                                        & ~8,
 103                                        &tx4939_ebuscptr->cr[i]);
 104         }
 105 }
 106
 107 static void __init rbtx4939_update_ioc_pen(void)
 108 {
 109         __u64 pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
 110         __u64 ccfg = ____raw_readq(&tx4939_ccfgptr->ccfg);
 111         __u8 pe1 = readb(rbtx4939_pe1_addr);
 112         __u8 pe2 = readb(rbtx4939_pe2_addr);
 113         __u8 pe3 = readb(rbtx4939_pe3_addr);
 114         if (pcfg & TX4939_PCFG_ATA0MODE)
 115                 pe1 |= RBTX4939_PE1_ATA(0);
 116         else
 117                 pe1 &= ~RBTX4939_PE1_ATA(0);
 118         if (pcfg & TX4939_PCFG_ATA1MODE) {
 119                 pe1 |= RBTX4939_PE1_ATA(1);
 120                 pe1 &= ~(RBTX4939_PE1_RMII(0) | RBTX4939_PE1_RMII(1));
 121         } else {
 122                 pe1 &= ~RBTX4939_PE1_ATA(1);
 123                 if (pcfg & TX4939_PCFG_ET0MODE)
 124                         pe1 |= RBTX4939_PE1_RMII(0);
 125                 else
 126                         pe1 &= ~RBTX4939_PE1_RMII(0);
 127                 if (pcfg & TX4939_PCFG_ET1MODE)
 128                         pe1 |= RBTX4939_PE1_RMII(1);
 129                 else
 130                         pe1 &= ~RBTX4939_PE1_RMII(1);
 131         }
 132         if (ccfg & TX4939_CCFG_PTSEL)
 133                 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
 134                          RBTX4939_PE3_VP_S);
 135         else {
 136                 __u64 vmode = pcfg &
 137                         (TX4939_PCFG_VSSMODE | TX4939_PCFG_VPSMODE);
 138                 if (vmode == 0)
 139                         pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
 140                                  RBTX4939_PE3_VP_S);
 141                 else if (vmode == TX4939_PCFG_VPSMODE) {
 142                         pe3 |= RBTX4939_PE3_VP_P;
 143                         pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_S);
 144                 } else if (vmode == TX4939_PCFG_VSSMODE) {
 145                         pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_S;
 146                         pe3 &= ~RBTX4939_PE3_VP_P;
 147                 } else {
 148                         pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_P;
 149                         pe3 &= ~RBTX4939_PE3_VP_S;
 150                 }
 151         }
 152         if (pcfg & TX4939_PCFG_SPIMODE) {
 153                 if (pcfg & TX4939_PCFG_SIO2MODE_GPIO)
 154                         pe2 &= ~(RBTX4939_PE2_SIO2 | RBTX4939_PE2_SIO0);
 155                 else {
 156                         if (pcfg & TX4939_PCFG_SIO2MODE_SIO2) {
 157                                 pe2 |= RBTX4939_PE2_SIO2;
 158                                 pe2 &= ~RBTX4939_PE2_SIO0;
 159                         } else {
 160                                 pe2 |= RBTX4939_PE2_SIO0;
 161                                 pe2 &= ~RBTX4939_PE2_SIO2;
 162                         }
 163                 }
 164                 if (pcfg & TX4939_PCFG_SIO3MODE)
 165                         pe2 |= RBTX4939_PE2_SIO3;
 166                 else
 167                         pe2 &= ~RBTX4939_PE2_SIO3;
 168                 pe2 &= ~RBTX4939_PE2_SPI;
 169         } else {
 170                 pe2 |= RBTX4939_PE2_SPI;
 171                 pe2 &= ~(RBTX4939_PE2_SIO3 | RBTX4939_PE2_SIO2 |
 172                          RBTX4939_PE2_SIO0);
 173         }
 174         if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_GPIO)
 175                 pe2 |= RBTX4939_PE2_GPIO;
 176         else
 177                 pe2 &= ~RBTX4939_PE2_GPIO;
 178         writeb(pe1, rbtx4939_pe1_addr);
 179         writeb(pe2, rbtx4939_pe2_addr);
 180         writeb(pe3, rbtx4939_pe3_addr);
 181 }
 182
 183 #define RBTX4939_MAX_7SEGLEDS   8
 184
 185 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
 186 static u8 led_val[RBTX4939_MAX_7SEGLEDS];
 187 struct rbtx4939_led_data {
 188         struct led_classdev cdev;
 189         char name[32];
 190         unsigned int num;
 191 };
 192
 193 /* Use "dot" in 7seg LEDs */
 194 static void rbtx4939_led_brightness_set(struct led_classdev *led_cdev,
 195                                         enum led_brightness value)
 196 {
 197         struct rbtx4939_led_data *led_dat =
 198                 container_of(led_cdev, struct rbtx4939_led_data, cdev);
 199         unsigned int num = led_dat->num;
 200         unsigned long flags;
 201
 202         local_irq_save(flags);
 203         led_val[num] = (led_val[num] & 0x7f) | (value ? 0x80 : 0);
 204         writeb(led_val[num], rbtx4939_7seg_addr(num / 4, num % 4));
 205         local_irq_restore(flags);
 206 }
 207
 208 static int __init rbtx4939_led_probe(struct platform_device *pdev)
 209 {
 210         struct rbtx4939_led_data *leds_data;
 211         int i;
 212         static char *default_triggers[] __initdata = {
 213                 "heartbeat",
 214                 "ide-disk",
 215                 "nand-disk",
 216         };
 217
 218         leds_data = kzalloc(sizeof(*leds_data) * RBTX4939_MAX_7SEGLEDS,
 219                             GFP_KERNEL);
 220         if (!leds_data)
 221                 return -ENOMEM;
 222         for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++) {
 223                 int rc;
 224                 struct rbtx4939_led_data *led_dat = &leds_data[i];
 225
 226                 led_dat->num = i;
 227                 led_dat->cdev.brightness_set = rbtx4939_led_brightness_set;
 228                 sprintf(led_dat->name, "rbtx4939:amber:%u", i);
 229                 led_dat->cdev.name = led_dat->name;
 230                 if (i < ARRAY_SIZE(default_triggers))
 231                         led_dat->cdev.default_trigger = default_triggers[i];
 232                 rc = led_classdev_register(&pdev->dev, &led_dat->cdev);
 233                 if (rc < 0)
 234                         return rc;
 235                 led_dat->cdev.brightness_set(&led_dat->cdev, 0);
 236         }
 237         return 0;
 238
 239 }
 240
 241 static struct platform_driver rbtx4939_led_driver = {
 242         .driver  = {
 243                 .name = "rbtx4939-led",
 244                 .owner = THIS_MODULE,
 245         },
 246 };
 247
 248 static void __init rbtx4939_led_setup(void)
 249 {
 250         platform_device_register_simple("rbtx4939-led", -1, NULL, 0);
 251         platform_driver_probe(&rbtx4939_led_driver, rbtx4939_led_probe);
 252 }
 253 #else
 254 static inline void rbtx4939_led_setup(void)
 255 {
 256 }
 257 #endif
 258
 259 static void __rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
 260 {
 261 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
 262         unsigned long flags;
 263         local_irq_save(flags);
 264         /* bit7: reserved for LED class */
 265         led_val[pos] = (led_val[pos] & 0x80) | (val & 0x7f);
 266         val = led_val[pos];
 267         local_irq_restore(flags);
 268 #endif
 269         writeb(val, rbtx4939_7seg_addr(pos / 4, pos % 4));
 270 }
 271
 272 static void rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
 273 {
 274         /* convert from map_to_seg7() notation */
 275         val = (val & 0x88) |
 276                 ((val & 0x40) >> 6) |
 277                 ((val & 0x20) >> 4) |
 278                 ((val & 0x10) >> 2) |
 279                 ((val & 0x04) << 2) |
 280                 ((val & 0x02) << 4) |
 281                 ((val & 0x01) << 6);
 282         __rbtx4939_7segled_putc(pos, val);
 283 }
 284
 285 static void __init rbtx4939_arch_init(void)
 286 {
 287         rbtx4939_pci_setup();
 288 }
 289
 290 static void __init rbtx4939_device_init(void)
 291 {
 292         unsigned long smc_addr = RBTX4939_ETHER_ADDR - IO_BASE;
 293         struct resource smc_res[] = {
 294                 {
 295                         .start  = smc_addr,
 296                         .end    = smc_addr + 0x10 - 1,
 297                         .flags  = IORESOURCE_MEM,
 298                 }, {
 299                         .start  = RBTX4939_IRQ_ETHER,
 300                         /* override default irq flag defined in smc91x.h */
 301                         .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
 302                 },
 303         };
 304         struct smc91x_platdata smc_pdata = {
 305                 .flags = SMC91X_USE_16BIT,
 306         };
 307         struct platform_device *pdev;
 308 #if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
 309         int i, j;
 310         unsigned char ethaddr[2][6];
 311         u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
 312
 313         for (i = 0; i < 2; i++) {
 314                 unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
 315                 if (bdipsw == 0)
 316                         memcpy(ethaddr[i], (void *)area, 6);
 317                 else {
 318                         u16 buf[3];
 319                         if (bdipsw & 8)
 320                                 area -= 0x03000000;
 321                         else
 322                                 area -= 0x01000000;
 323                         for (j = 0; j < 3; j++)
 324                                 buf[j] = le16_to_cpup((u16 *)(area + j * 2));
 325                         memcpy(ethaddr[i], buf, 6);
 326                 }
 327         }
 328         tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
 329 #endif
 330         pdev = platform_device_alloc("smc91x", -1);
 331         if (!pdev ||
 332             platform_device_add_resources(pdev, smc_res, ARRAY_SIZE(smc_res)) ||
 333             platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
 334             platform_device_add(pdev))
 335                 platform_device_put(pdev);
 336         rbtx4939_led_setup();
 337         tx4939_wdt_init();
 338         tx4939_ata_init();
 339         tx4939_rtc_init();
 340 }
 341
 342 static void __init rbtx4939_setup(void)
 343 {
 344         int i;
 345
 346         rbtx4939_ebusc_setup();
 347         /* always enable ATA0 */
 348         txx9_set64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_ATA0MODE);
 349         rbtx4939_update_ioc_pen();
 350         if (txx9_master_clock == 0)
 351                 txx9_master_clock = 20000000;
 352         tx4939_setup();
 353 #ifdef HAVE_RBTX4939_IOSWAB
 354         ioswabw = rbtx4939_ioswabw;
 355         __mem_ioswabw = rbtx4939_mem_ioswabw;
 356 #endif
 357
 358         _machine_restart = rbtx4939_machine_restart;
 359
 360         txx9_7segled_init(RBTX4939_MAX_7SEGLEDS, rbtx4939_7segled_putc);
 361         for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++)
 362                 txx9_7segled_putc(i, '-');
 363         pr_info("RBTX4939 (Rev %02x) --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
 364                 readb(rbtx4939_board_rev_addr), readb(rbtx4939_ioc_rev_addr),
 365                 readb(rbtx4939_udipsw_addr), readb(rbtx4939_bdipsw_addr));
 366
 367 #ifdef CONFIG_PCI
 368         txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
 369         txx9_board_pcibios_setup = tx4927_pcibios_setup;
 370 #else
 371         set_io_port_base(RBTX4939_ETHER_BASE);
 372 #endif
 373
 374         tx4939_sio_init(TX4939_SCLK0(txx9_master_clock), 0);
 375 }
 376
 377 struct txx9_board_vec rbtx4939_vec __initdata = {
 378         .system = "Tothiba RBTX4939",
 379         .prom_init = rbtx4939_prom_init,
 380         .mem_setup = rbtx4939_setup,
 381         .irq_setup = rbtx4939_irq_setup,
 382         .time_init = rbtx4939_time_init,
 383         .device_init = rbtx4939_device_init,
 384         .arch_init = rbtx4939_arch_init,
 385 #ifdef CONFIG_PCI
 386         .pci_map_irq = tx4939_pci_map_irq,
 387 #endif
 388 };