arch/sh/boards/mpc1211/setup.c

   1 /*
   2  * linux/arch/sh/board/mpc1211/setup.c
   3  *
   4  * Copyright (C) 2002  Saito.K & Jeanne,  Fujii.Y
   5  *
   6  */
   7
   8 #include <linux/init.h>
   9 #include <linux/irq.h>
  10 #include <linux/hdreg.h>
  11 #include <linux/ide.h>
  12 #include <linux/interrupt.h>
  13
  14 #include <asm/io.h>
  15 #include <asm/machvec.h>
  16 #include <asm/mpc1211/mpc1211.h>
  17 #include <asm/mpc1211/pci.h>
  18 #include <asm/mpc1211/m1543c.h>
  19
  20
  21 /* ALI15X3 SMBus address offsets */
  22 #define SMBHSTSTS   (0 + 0x3100)
  23 #define SMBHSTCNT   (1 + 0x3100)
  24 #define SMBHSTSTART (2 + 0x3100)
  25 #define SMBHSTCMD   (7 + 0x3100)
  26 #define SMBHSTADD   (3 + 0x3100)
  27 #define SMBHSTDAT0  (4 + 0x3100)
  28 #define SMBHSTDAT1  (5 + 0x3100)
  29 #define SMBBLKDAT   (6 + 0x3100)
  30
  31 /* Other settings */
  32 #define MAX_TIMEOUT 500         /* times 1/100 sec */
  33
  34 /* ALI15X3 command constants */
  35 #define ALI15X3_ABORT      0x04
  36 #define ALI15X3_T_OUT      0x08
  37 #define ALI15X3_QUICK      0x00
  38 #define ALI15X3_BYTE       0x10
  39 #define ALI15X3_BYTE_DATA  0x20
  40 #define ALI15X3_WORD_DATA  0x30
  41 #define ALI15X3_BLOCK_DATA 0x40
  42 #define ALI15X3_BLOCK_CLR  0x80
  43
  44 /* ALI15X3 status register bits */
  45 #define ALI15X3_STS_IDLE        0x04
  46 #define ALI15X3_STS_BUSY        0x08
  47 #define ALI15X3_STS_DONE        0x10
  48 #define ALI15X3_STS_DEV         0x20    /* device error */
  49 #define ALI15X3_STS_COLL        0x40    /* collision or no response */
  50 #define ALI15X3_STS_TERM        0x80    /* terminated by abort */
  51 #define ALI15X3_STS_ERR         0xE0    /* all the bad error bits */
  52
  53 const char *get_system_type(void)
  54 {
  55         return "Interface MPC-1211(CTP/PCI/MPC-SH02)";
  56 }
  57
  58 static void __init pci_write_config(unsigned long busNo,
  59                                     unsigned long devNo,
  60                                     unsigned long fncNo,
  61                                     unsigned long cnfAdd,
  62                                     unsigned long cnfData)
  63 {
  64         ctrl_outl((0x80000000
  65                 + ((busNo & 0xff) << 16)
  66                 + ((devNo & 0x1f) << 11)
  67                 + ((fncNo & 0x07) <<  8)
  68                 + (cnfAdd & 0xfc)), PCIPAR);
  69
  70         ctrl_outl(cnfData, PCIPDR);
  71 }
  72
  73 /*
  74   Initialize IRQ setting
  75 */
  76
  77 static unsigned char m_irq_mask = 0xfb;
  78 static unsigned char s_irq_mask = 0xff;
  79 volatile unsigned long irq_err_count;
  80
  81 static void disable_mpc1211_irq(unsigned int irq)
  82 {
  83         unsigned long flags;
  84
  85         save_and_cli(flags);
  86         if( irq < 8) {
  87                 m_irq_mask |= (1 << irq);
  88                 outb(m_irq_mask,I8259_M_MR);
  89         } else {
  90                 s_irq_mask |= (1 << (irq - 8));
  91                 outb(s_irq_mask,I8259_S_MR);
  92         }
  93         restore_flags(flags);
  94
  95 }
  96
  97 static void enable_mpc1211_irq(unsigned int irq)
  98 {
  99         unsigned long flags;
 100
 101         save_and_cli(flags);
 102
 103         if( irq < 8) {
 104                 m_irq_mask &= ~(1 << irq);
 105                 outb(m_irq_mask,I8259_M_MR);
 106         } else {
 107                 s_irq_mask &= ~(1 << (irq - 8));
 108                 outb(s_irq_mask,I8259_S_MR);
 109         }
 110         restore_flags(flags);
 111 }
 112
 113 static inline int mpc1211_irq_real(unsigned int irq)
 114 {
 115         int value;
 116         int irqmask;
 117
 118         if ( irq < 8) {
 119                 irqmask = 1<<irq;
 120                 outb(0x0b,I8259_M_CR);          /* ISR register */
 121                 value = inb(I8259_M_CR) & irqmask;
 122                 outb(0x0a,I8259_M_CR);          /* back ro the IPR reg */
 123                 return value;
 124         }
 125         irqmask = 1<<(irq - 8);
 126         outb(0x0b,I8259_S_CR);          /* ISR register */
 127         value = inb(I8259_S_CR) & irqmask;
 128         outb(0x0a,I8259_S_CR);          /* back ro the IPR reg */
 129         return value;
 130 }
 131
 132 static void mask_and_ack_mpc1211(unsigned int irq)
 133 {
 134         unsigned long flags;
 135
 136         save_and_cli(flags);
 137
 138         if(irq < 8) {
 139                 if(m_irq_mask & (1<<irq)){
 140                   if(!mpc1211_irq_real(irq)){
 141                     irq_err_count++;
 142                     printk("spurious 8259A interrupt: IRQ %x\n",irq);
 143                    }
 144                 } else {
 145                         m_irq_mask |= (1<<irq);
 146                 }
 147                 inb(I8259_M_MR);                /* DUMMY */
 148                 outb(m_irq_mask,I8259_M_MR);    /* disable */
 149                 outb(0x60+irq,I8259_M_CR);      /* EOI */
 150
 151         } else {
 152                 if(s_irq_mask & (1<<(irq - 8))){
 153                   if(!mpc1211_irq_real(irq)){
 154                     irq_err_count++;
 155                     printk("spurious 8259A interrupt: IRQ %x\n",irq);
 156                   }
 157                 } else {
 158                         s_irq_mask |= (1<<(irq - 8));
 159                 }
 160                 inb(I8259_S_MR);                /* DUMMY */
 161                 outb(s_irq_mask,I8259_S_MR);    /* disable */
 162                 outb(0x60+(irq-8),I8259_S_CR);  /* EOI */
 163                 outb(0x60+2,I8259_M_CR);
 164         }
 165         restore_flags(flags);
 166 }
 167
 168 static void end_mpc1211_irq(unsigned int irq)
 169 {
 170         enable_mpc1211_irq(irq);
 171 }
 172
 173 static unsigned int startup_mpc1211_irq(unsigned int irq)
 174 {
 175         enable_mpc1211_irq(irq);
 176         return 0;
 177 }
 178
 179 static void shutdown_mpc1211_irq(unsigned int irq)
 180 {
 181         disable_mpc1211_irq(irq);
 182 }
 183
 184 static struct hw_interrupt_type mpc1211_irq_type = {
 185         .typename       = "MPC1211-IRQ",
 186         .startup        = startup_mpc1211_irq,
 187         .shutdown       = shutdown_mpc1211_irq,
 188         .enable         = enable_mpc1211_irq,
 189         .disable        = disable_mpc1211_irq,
 190         .ack            = mask_and_ack_mpc1211,
 191         .end            = end_mpc1211_irq
 192 };
 193
 194 static void make_mpc1211_irq(unsigned int irq)
 195 {
 196         irq_desc[irq].chip = &mpc1211_irq_type;
 197         irq_desc[irq].status  = IRQ_DISABLED;
 198         irq_desc[irq].action  = 0;
 199         irq_desc[irq].depth   = 1;
 200         disable_mpc1211_irq(irq);
 201 }
 202
 203 int mpc1211_irq_demux(int irq)
 204 {
 205         unsigned int poll;
 206
 207         if( irq == 2 ) {
 208                 outb(0x0c,I8259_M_CR);
 209                 poll = inb(I8259_M_CR);
 210                 if(poll & 0x80) {
 211                         irq = (poll & 0x07);
 212                 }
 213                 if( irq == 2) {
 214                         outb(0x0c,I8259_S_CR);
 215                         poll = inb(I8259_S_CR);
 216                         irq = (poll & 0x07) + 8;
 217                 }
 218         }
 219         return irq;
 220 }
 221
 222 void __init init_mpc1211_IRQ(void)
 223 {
 224         int i;
 225         /*
 226          * Super I/O (Just mimic PC):
 227          *  1: keyboard
 228          *  3: serial 1
 229          *  4: serial 0
 230          *  5: printer
 231          *  6: floppy
 232          *  8: rtc
 233          * 10: lan
 234          * 12: mouse
 235          * 14: ide0
 236          * 15: ide1
 237          */
 238
 239         pci_write_config(0,0,0,0x54, 0xb0b0002d);
 240         outb(0x11, I8259_M_CR);         /* mater icw1 edge trigger  */
 241         outb(0x11, I8259_S_CR);         /* slave icw1 edge trigger  */
 242         outb(0x20, I8259_M_MR);         /* m icw2 base vec 0x08     */
 243         outb(0x28, I8259_S_MR);         /* s icw2 base vec 0x70     */
 244         outb(0x04, I8259_M_MR);         /* m icw3 slave irq2        */
 245         outb(0x02, I8259_S_MR);         /* s icw3 slave id          */
 246         outb(0x01, I8259_M_MR);         /* m icw4 non buf normal eoi*/
 247         outb(0x01, I8259_S_MR);         /* s icw4 non buf normal eo1*/
 248         outb(0xfb, I8259_M_MR);         /* disable irq0--irq7  */
 249         outb(0xff, I8259_S_MR);         /* disable irq8--irq15 */
 250
 251         for ( i=0; i < 16; i++) {
 252                 if(i != 2) {
 253                         make_mpc1211_irq(i);
 254                 }
 255         }
 256 }
 257
 258 /*
 259   Initialize the board
 260 */
 261
 262
 263 static void delay (void)
 264 {
 265         volatile unsigned short tmp;
 266         tmp = *(volatile unsigned short *) 0xa0000000;
 267 }
 268
 269 static void delay1000 (void)
 270 {
 271         int i;
 272
 273         for (i=0; i<1000; i++)
 274                 delay ();
 275 }
 276
 277 static int put_smb_blk(unsigned char *p, int address, int command, int no)
 278 {
 279         int temp;
 280         int timeout;
 281         int i;
 282
 283         outb(0xff, SMBHSTSTS);
 284         temp = inb(SMBHSTSTS);
 285         for (timeout = 0; (timeout < MAX_TIMEOUT) && !(temp & ALI15X3_STS_IDLE); timeout++) {
 286                 delay1000();
 287                 temp = inb(SMBHSTSTS);
 288         }
 289         if (timeout >= MAX_TIMEOUT){
 290                 return -1;
 291         }
 292
 293         outb(((address & 0x7f) << 1), SMBHSTADD);
 294         outb(0xc0, SMBHSTCNT);
 295         outb(command & 0xff, SMBHSTCMD);
 296         outb(no & 0x1f, SMBHSTDAT0);
 297
 298         for(i = 1; i <= no; i++) {
 299                 outb(*p++, SMBBLKDAT);
 300         }
 301         outb(0xff, SMBHSTSTART);
 302
 303         temp = inb(SMBHSTSTS);
 304         for (timeout = 0; (timeout < MAX_TIMEOUT) && !(temp & (ALI15X3_STS_ERR | ALI15X3_STS_DONE)); timeout++) {
 305                 delay1000();
 306                 temp = inb(SMBHSTSTS);
 307         }
 308         if (timeout >= MAX_TIMEOUT) {
 309                 return -2;
 310         }
 311         if ( temp & ALI15X3_STS_ERR ){
 312                 return -3;
 313         }
 314         return 0;
 315 }
 316
 317 /*
 318  * The Machine Vector
 319  */
 320
 321 struct sh_machine_vector mv_mpc1211 __initmv = {
 322         .mv_nr_irqs             = 48,
 323         .mv_irq_demux           = mpc1211_irq_demux,
 324         .mv_init_irq            = init_mpc1211_IRQ,
 325
 326 #ifdef CONFIG_HEARTBEAT
 327         .mv_heartbeat           = heartbeat_mpc1211,
 328 #endif
 329 };
 330
 331 ALIAS_MV(mpc1211)
 332
 333 /* arch/sh/boards/mpc1211/rtc.c */
 334 void mpc1211_time_init(void);
 335
 336 int __init platform_setup(void)
 337 {
 338         unsigned char spd_buf[128];
 339
 340         __set_io_port_base(PA_PCI_IO);
 341
 342         pci_write_config(0,0,0,0x54, 0xb0b00000);
 343
 344         do {
 345                 outb(ALI15X3_ABORT, SMBHSTCNT);
 346                 spd_buf[0] = 0x0c;
 347                 spd_buf[1] = 0x43;
 348                 spd_buf[2] = 0x7f;
 349                 spd_buf[3] = 0x03;
 350                 spd_buf[4] = 0x00;
 351                 spd_buf[5] = 0x03;
 352                 spd_buf[6] = 0x00;
 353         } while (put_smb_blk(spd_buf, 0x69, 0, 7) < 0);
 354
 355         board_time_init = mpc1211_time_init;
 356
 357         return 0;
 358 }
 359