arch/sh/boards/mpc1211/setup.c

   1 /*
   2  * linux/arch/sh/boards/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 #include <asm/io.h>
  14 #include <asm/machvec.h>
  15 #include <asm/mpc1211/mpc1211.h>
  16 #include <asm/mpc1211/pci.h>
  17 #include <asm/mpc1211/m1543c.h>
  18
  19 /* ALI15X3 SMBus address offsets */
  20 #define SMBHSTSTS   (0 + 0x3100)
  21 #define SMBHSTCNT   (1 + 0x3100)
  22 #define SMBHSTSTART (2 + 0x3100)
  23 #define SMBHSTCMD   (7 + 0x3100)
  24 #define SMBHSTADD   (3 + 0x3100)
  25 #define SMBHSTDAT0  (4 + 0x3100)
  26 #define SMBHSTDAT1  (5 + 0x3100)
  27 #define SMBBLKDAT   (6 + 0x3100)
  28
  29 /* Other settings */
  30 #define MAX_TIMEOUT 500         /* times 1/100 sec */
  31
  32 /* ALI15X3 command constants */
  33 #define ALI15X3_ABORT      0x04
  34 #define ALI15X3_T_OUT      0x08
  35 #define ALI15X3_QUICK      0x00
  36 #define ALI15X3_BYTE       0x10
  37 #define ALI15X3_BYTE_DATA  0x20
  38 #define ALI15X3_WORD_DATA  0x30
  39 #define ALI15X3_BLOCK_DATA 0x40
  40 #define ALI15X3_BLOCK_CLR  0x80
  41
  42 /* ALI15X3 status register bits */
  43 #define ALI15X3_STS_IDLE        0x04
  44 #define ALI15X3_STS_BUSY        0x08
  45 #define ALI15X3_STS_DONE        0x10
  46 #define ALI15X3_STS_DEV         0x20    /* device error */
  47 #define ALI15X3_STS_COLL        0x40    /* collision or no response */
  48 #define ALI15X3_STS_TERM        0x80    /* terminated by abort */
  49 #define ALI15X3_STS_ERR         0xE0    /* all the bad error bits */
  50
  51 static void __init pci_write_config(unsigned long busNo,
  52                                     unsigned long devNo,
  53                                     unsigned long fncNo,
  54                                     unsigned long cnfAdd,
  55                                     unsigned long cnfData)
  56 {
  57         ctrl_outl((0x80000000
  58                 + ((busNo & 0xff) << 16)
  59                 + ((devNo & 0x1f) << 11)
  60                 + ((fncNo & 0x07) <<  8)
  61                 + (cnfAdd & 0xfc)), PCIPAR);
  62
  63         ctrl_outl(cnfData, PCIPDR);
  64 }
  65
  66 /*
  67   Initialize IRQ setting
  68 */
  69
  70 static unsigned char m_irq_mask = 0xfb;
  71 static unsigned char s_irq_mask = 0xff;
  72
  73 static void disable_mpc1211_irq(unsigned int irq)
  74 {
  75         if( irq < 8) {
  76                 m_irq_mask |= (1 << irq);
  77                 outb(m_irq_mask,I8259_M_MR);
  78         } else {
  79                 s_irq_mask |= (1 << (irq - 8));
  80                 outb(s_irq_mask,I8259_S_MR);
  81         }
  82
  83 }
  84
  85 static void enable_mpc1211_irq(unsigned int irq)
  86 {
  87         if( irq < 8) {
  88                 m_irq_mask &= ~(1 << irq);
  89                 outb(m_irq_mask,I8259_M_MR);
  90         } else {
  91                 s_irq_mask &= ~(1 << (irq - 8));
  92                 outb(s_irq_mask,I8259_S_MR);
  93         }
  94 }
  95
  96 static inline int mpc1211_irq_real(unsigned int irq)
  97 {
  98         int value;
  99         int irqmask;
 100
 101         if ( irq < 8) {
 102                 irqmask = 1<<irq;
 103                 outb(0x0b,I8259_M_CR);          /* ISR register */
 104                 value = inb(I8259_M_CR) & irqmask;
 105                 outb(0x0a,I8259_M_CR);          /* back ro the IPR reg */
 106                 return value;
 107         }
 108         irqmask = 1<<(irq - 8);
 109         outb(0x0b,I8259_S_CR);          /* ISR register */
 110         value = inb(I8259_S_CR) & irqmask;
 111         outb(0x0a,I8259_S_CR);          /* back ro the IPR reg */
 112         return value;
 113 }
 114
 115 static void mask_and_ack_mpc1211(unsigned int irq)
 116 {
 117         if(irq < 8) {
 118                 if(m_irq_mask & (1<<irq)){
 119                   if(!mpc1211_irq_real(irq)){
 120                     atomic_inc(&irq_err_count)
 121                     printk("spurious 8259A interrupt: IRQ %x\n",irq);
 122                    }
 123                 } else {
 124                         m_irq_mask |= (1<<irq);
 125                 }
 126                 inb(I8259_M_MR);                /* DUMMY */
 127                 outb(m_irq_mask,I8259_M_MR);    /* disable */
 128                 outb(0x60+irq,I8259_M_CR);      /* EOI */
 129
 130         } else {
 131                 if(s_irq_mask & (1<<(irq - 8))){
 132                   if(!mpc1211_irq_real(irq)){
 133                     atomic_inc(&irq_err_count);
 134                     printk("spurious 8259A interrupt: IRQ %x\n",irq);
 135                   }
 136                 } else {
 137                         s_irq_mask |= (1<<(irq - 8));
 138                 }
 139                 inb(I8259_S_MR);                /* DUMMY */
 140                 outb(s_irq_mask,I8259_S_MR);    /* disable */
 141                 outb(0x60+(irq-8),I8259_S_CR);  /* EOI */
 142                 outb(0x60+2,I8259_M_CR);
 143         }
 144 }
 145
 146 static void end_mpc1211_irq(unsigned int irq)
 147 {
 148         enable_mpc1211_irq(irq);
 149 }
 150
 151 static unsigned int startup_mpc1211_irq(unsigned int irq)
 152 {
 153         enable_mpc1211_irq(irq);
 154         return 0;
 155 }
 156
 157 static void shutdown_mpc1211_irq(unsigned int irq)
 158 {
 159         disable_mpc1211_irq(irq);
 160 }
 161
 162 static struct hw_interrupt_type mpc1211_irq_type = {
 163         .typename       = "MPC1211-IRQ",
 164         .startup        = startup_mpc1211_irq,
 165         .shutdown       = shutdown_mpc1211_irq,
 166         .enable         = enable_mpc1211_irq,
 167         .disable        = disable_mpc1211_irq,
 168         .ack            = mask_and_ack_mpc1211,
 169         .end            = end_mpc1211_irq
 170 };
 171
 172 static void make_mpc1211_irq(unsigned int irq)
 173 {
 174         irq_desc[irq].chip = &mpc1211_irq_type;
 175         irq_desc[irq].status  = IRQ_DISABLED;
 176         irq_desc[irq].action  = 0;
 177         irq_desc[irq].depth   = 1;
 178         disable_mpc1211_irq(irq);
 179 }
 180
 181 int mpc1211_irq_demux(int irq)
 182 {
 183         unsigned int poll;
 184
 185         if( irq == 2 ) {
 186                 outb(0x0c,I8259_M_CR);
 187                 poll = inb(I8259_M_CR);
 188                 if(poll & 0x80) {
 189                         irq = (poll & 0x07);
 190                 }
 191                 if( irq == 2) {
 192                         outb(0x0c,I8259_S_CR);
 193                         poll = inb(I8259_S_CR);
 194                         irq = (poll & 0x07) + 8;
 195                 }
 196         }
 197         return irq;
 198 }
 199
 200 static void __init init_mpc1211_IRQ(void)
 201 {
 202         int i;
 203         /*
 204          * Super I/O (Just mimic PC):
 205          *  1: keyboard
 206          *  3: serial 1
 207          *  4: serial 0
 208          *  5: printer
 209          *  6: floppy
 210          *  8: rtc
 211          * 10: lan
 212          * 12: mouse
 213          * 14: ide0
 214          * 15: ide1
 215          */
 216
 217         pci_write_config(0,0,0,0x54, 0xb0b0002d);
 218         outb(0x11, I8259_M_CR);         /* mater icw1 edge trigger  */
 219         outb(0x11, I8259_S_CR);         /* slave icw1 edge trigger  */
 220         outb(0x20, I8259_M_MR);         /* m icw2 base vec 0x08     */
 221         outb(0x28, I8259_S_MR);         /* s icw2 base vec 0x70     */
 222         outb(0x04, I8259_M_MR);         /* m icw3 slave irq2        */
 223         outb(0x02, I8259_S_MR);         /* s icw3 slave id          */
 224         outb(0x01, I8259_M_MR);         /* m icw4 non buf normal eoi*/
 225         outb(0x01, I8259_S_MR);         /* s icw4 non buf normal eo1*/
 226         outb(0xfb, I8259_M_MR);         /* disable irq0--irq7  */
 227         outb(0xff, I8259_S_MR);         /* disable irq8--irq15 */
 228
 229         for ( i=0; i < 16; i++) {
 230                 if(i != 2) {
 231                         make_mpc1211_irq(i);
 232                 }
 233         }
 234 }
 235
 236 static void delay1000(void)
 237 {
 238         int i;
 239
 240         for (i=0; i<1000; i++)
 241                 ctrl_delay();
 242 }
 243
 244 static int put_smb_blk(unsigned char *p, int address, int command, int no)
 245 {
 246         int temp;
 247         int timeout;
 248         int i;
 249
 250         outb(0xff, SMBHSTSTS);
 251         temp = inb(SMBHSTSTS);
 252         for (timeout = 0; (timeout < MAX_TIMEOUT) && !(temp & ALI15X3_STS_IDLE); timeout++) {
 253                 delay1000();
 254                 temp = inb(SMBHSTSTS);
 255         }
 256         if (timeout >= MAX_TIMEOUT){
 257                 return -1;
 258         }
 259
 260         outb(((address & 0x7f) << 1), SMBHSTADD);
 261         outb(0xc0, SMBHSTCNT);
 262         outb(command & 0xff, SMBHSTCMD);
 263         outb(no & 0x1f, SMBHSTDAT0);
 264
 265         for(i = 1; i <= no; i++) {
 266                 outb(*p++, SMBBLKDAT);
 267         }
 268         outb(0xff, SMBHSTSTART);
 269
 270         temp = inb(SMBHSTSTS);
 271         for (timeout = 0; (timeout < MAX_TIMEOUT) && !(temp & (ALI15X3_STS_ERR | ALI15X3_STS_DONE)); timeout++) {
 272                 delay1000();
 273                 temp = inb(SMBHSTSTS);
 274         }
 275         if (timeout >= MAX_TIMEOUT) {
 276                 return -2;
 277         }
 278         if ( temp & ALI15X3_STS_ERR ){
 279                 return -3;
 280         }
 281         return 0;
 282 }
 283
 284 /* arch/sh/boards/mpc1211/rtc.c */
 285 void mpc1211_time_init(void);
 286
 287 static void __init mpc1211_setup(char **cmdline_p)
 288 {
 289         unsigned char spd_buf[128];
 290
 291         __set_io_port_base(PA_PCI_IO);
 292
 293         pci_write_config(0,0,0,0x54, 0xb0b00000);
 294
 295         do {
 296                 outb(ALI15X3_ABORT, SMBHSTCNT);
 297                 spd_buf[0] = 0x0c;
 298                 spd_buf[1] = 0x43;
 299                 spd_buf[2] = 0x7f;
 300                 spd_buf[3] = 0x03;
 301                 spd_buf[4] = 0x00;
 302                 spd_buf[5] = 0x03;
 303                 spd_buf[6] = 0x00;
 304         } while (put_smb_blk(spd_buf, 0x69, 0, 7) < 0);
 305
 306         board_time_init = mpc1211_time_init;
 307
 308         return 0;
 309 }
 310
 311 /*
 312  * The Machine Vector
 313  */
 314 struct sh_machine_vector mv_mpc1211 __initmv = {
 315         .mv_name                = "Interface MPC-1211(CTP/PCI/MPC-SH02)",
 316         .mv_setup               = mpc1211_setup,
 317         .mv_nr_irqs             = 48,
 318         .mv_irq_demux           = mpc1211_irq_demux,
 319         .mv_init_irq            = init_mpc1211_IRQ,
 320
 321 #ifdef CONFIG_HEARTBEAT
 322         .mv_heartbeat           = heartbeat_mpc1211,
 323 #endif
 324 };
 325 ALIAS_MV(mpc1211)