arch/sh/boards/mach-cayman/setup.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/sh/mach-cayman/setup.c
   4  *
   5  * SH5 Cayman support
   6  *
   7  * Copyright (C) 2002  David J. Mckay & Benedict Gaster
   8  * Copyright (C) 2003 - 2007  Paul Mundt
   9  */
  10 #include <linux/init.h>
  11 #include <linux/io.h>
  12 #include <linux/kernel.h>
  13 #include <cpu/irq.h>
  14
  15 /*
  16  * Platform Dependent Interrupt Priorities.
  17  */
  18
  19 /* Using defaults defined in irq.h */
  20 #define RES NO_PRIORITY         /* Disabled */
  21 #define IR0 IRL0_PRIORITY       /* IRLs */
  22 #define IR1 IRL1_PRIORITY
  23 #define IR2 IRL2_PRIORITY
  24 #define IR3 IRL3_PRIORITY
  25 #define PCA INTA_PRIORITY       /* PCI Ints */
  26 #define PCB INTB_PRIORITY
  27 #define PCC INTC_PRIORITY
  28 #define PCD INTD_PRIORITY
  29 #define SER TOP_PRIORITY
  30 #define ERR TOP_PRIORITY
  31 #define PW0 TOP_PRIORITY
  32 #define PW1 TOP_PRIORITY
  33 #define PW2 TOP_PRIORITY
  34 #define PW3 TOP_PRIORITY
  35 #define DM0 NO_PRIORITY         /* DMA Ints */
  36 #define DM1 NO_PRIORITY
  37 #define DM2 NO_PRIORITY
  38 #define DM3 NO_PRIORITY
  39 #define DAE NO_PRIORITY
  40 #define TU0 TIMER_PRIORITY      /* TMU Ints */
  41 #define TU1 NO_PRIORITY
  42 #define TU2 NO_PRIORITY
  43 #define TI2 NO_PRIORITY
  44 #define ATI NO_PRIORITY         /* RTC Ints */
  45 #define PRI NO_PRIORITY
  46 #define CUI RTC_PRIORITY
  47 #define ERI SCIF_PRIORITY       /* SCIF Ints */
  48 #define RXI SCIF_PRIORITY
  49 #define BRI SCIF_PRIORITY
  50 #define TXI SCIF_PRIORITY
  51 #define ITI TOP_PRIORITY        /* WDT Ints */
  52
  53 /* Setup for the SMSC FDC37C935 */
  54 #define SMSC_SUPERIO_BASE       0x04000000
  55 #define SMSC_CONFIG_PORT_ADDR   0x3f0
  56 #define SMSC_INDEX_PORT_ADDR    SMSC_CONFIG_PORT_ADDR
  57 #define SMSC_DATA_PORT_ADDR     0x3f1
  58
  59 #define SMSC_ENTER_CONFIG_KEY   0x55
  60 #define SMSC_EXIT_CONFIG_KEY    0xaa
  61
  62 #define SMCS_LOGICAL_DEV_INDEX  0x07
  63 #define SMSC_DEVICE_ID_INDEX    0x20
  64 #define SMSC_DEVICE_REV_INDEX   0x21
  65 #define SMSC_ACTIVATE_INDEX     0x30
  66 #define SMSC_PRIMARY_BASE_INDEX  0x60
  67 #define SMSC_SECONDARY_BASE_INDEX 0x62
  68 #define SMSC_PRIMARY_INT_INDEX  0x70
  69 #define SMSC_SECONDARY_INT_INDEX 0x72
  70
  71 #define SMSC_IDE1_DEVICE        1
  72 #define SMSC_KEYBOARD_DEVICE    7
  73 #define SMSC_CONFIG_REGISTERS   8
  74
  75 #define SMSC_SUPERIO_READ_INDEXED(index) ({ \
  76         outb((index), SMSC_INDEX_PORT_ADDR); \
  77         inb(SMSC_DATA_PORT_ADDR); })
  78 #define SMSC_SUPERIO_WRITE_INDEXED(val, index) ({ \
  79         outb((index), SMSC_INDEX_PORT_ADDR); \
  80         outb((val),   SMSC_DATA_PORT_ADDR); })
  81
  82 #define IDE1_PRIMARY_BASE       0x01f0
  83 #define IDE1_SECONDARY_BASE     0x03f6
  84
  85 unsigned long smsc_superio_virt;
  86
  87 int platform_int_priority[NR_INTC_IRQS] = {
  88         IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD, /* IRQ  0- 7 */
  89         RES, RES, RES, RES, SER, ERR, PW3, PW2, /* IRQ  8-15 */
  90         PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES, /* IRQ 16-23 */
  91         RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 24-31 */
  92         TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI, /* IRQ 32-39 */
  93         RXI, BRI, TXI, RES, RES, RES, RES, RES, /* IRQ 40-47 */
  94         RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 48-55 */
  95         RES, RES, RES, RES, RES, RES, RES, ITI, /* IRQ 56-63 */
  96 };
  97
  98 static int __init smsc_superio_setup(void)
  99 {
 100         unsigned char devid, devrev;
 101
 102         smsc_superio_virt = (unsigned long)ioremap_nocache(SMSC_SUPERIO_BASE, 1024);
 103         if (!smsc_superio_virt) {
 104                 panic("Unable to remap SMSC SuperIO\n");
 105         }
 106
 107         /* Initially the chip is in run state */
 108         /* Put it into configuration state */
 109         outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
 110         outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
 111
 112         /* Read device ID info */
 113         devid = SMSC_SUPERIO_READ_INDEXED(SMSC_DEVICE_ID_INDEX);
 114         devrev = SMSC_SUPERIO_READ_INDEXED(SMSC_DEVICE_REV_INDEX);
 115         printk("SMSC SuperIO devid %02x rev %02x\n", devid, devrev);
 116
 117         /* Select the keyboard device */
 118         SMSC_SUPERIO_WRITE_INDEXED(SMSC_KEYBOARD_DEVICE, SMCS_LOGICAL_DEV_INDEX);
 119
 120         /* enable it */
 121         SMSC_SUPERIO_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
 122
 123         /* Select the interrupts */
 124         /* On a PC keyboard is IRQ1, mouse is IRQ12 */
 125         SMSC_SUPERIO_WRITE_INDEXED(1, SMSC_PRIMARY_INT_INDEX);
 126         SMSC_SUPERIO_WRITE_INDEXED(12, SMSC_SECONDARY_INT_INDEX);
 127
 128         /*
 129          * Only IDE1 exists on the Cayman
 130          */
 131
 132         /* Power it on */
 133         SMSC_SUPERIO_WRITE_INDEXED(1 << SMSC_IDE1_DEVICE, 0x22);
 134
 135         SMSC_SUPERIO_WRITE_INDEXED(SMSC_IDE1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
 136         SMSC_SUPERIO_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
 137
 138         SMSC_SUPERIO_WRITE_INDEXED(IDE1_PRIMARY_BASE >> 8,
 139                                    SMSC_PRIMARY_BASE_INDEX + 0);
 140         SMSC_SUPERIO_WRITE_INDEXED(IDE1_PRIMARY_BASE & 0xff,
 141                                    SMSC_PRIMARY_BASE_INDEX + 1);
 142
 143         SMSC_SUPERIO_WRITE_INDEXED(IDE1_SECONDARY_BASE >> 8,
 144                                    SMSC_SECONDARY_BASE_INDEX + 0);
 145         SMSC_SUPERIO_WRITE_INDEXED(IDE1_SECONDARY_BASE & 0xff,
 146                                    SMSC_SECONDARY_BASE_INDEX + 1);
 147
 148         SMSC_SUPERIO_WRITE_INDEXED(14, SMSC_PRIMARY_INT_INDEX);
 149
 150         SMSC_SUPERIO_WRITE_INDEXED(SMSC_CONFIG_REGISTERS,
 151                                    SMCS_LOGICAL_DEV_INDEX);
 152
 153         SMSC_SUPERIO_WRITE_INDEXED(0x00, 0xc2); /* GP42 = nIDE1_OE */
 154         SMSC_SUPERIO_WRITE_INDEXED(0x01, 0xc5); /* GP45 = IDE1_IRQ */
 155         SMSC_SUPERIO_WRITE_INDEXED(0x00, 0xc6); /* GP46 = nIOROP */
 156         SMSC_SUPERIO_WRITE_INDEXED(0x00, 0xc7); /* GP47 = nIOWOP */
 157
 158         /* Exit the configuration state */
 159         outb(SMSC_EXIT_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
 160
 161         return 0;
 162 }
 163 device_initcall(smsc_superio_setup);
 164
 165 static void __iomem *cayman_ioport_map(unsigned long port, unsigned int len)
 166 {
 167         if (port < 0x400) {
 168                 extern unsigned long smsc_superio_virt;
 169                 return (void __iomem *)((port << 2) | smsc_superio_virt);
 170         }
 171
 172         return (void __iomem *)port;
 173 }
 174
 175 extern void init_cayman_irq(void);
 176
 177 static struct sh_machine_vector mv_cayman __initmv = {
 178         .mv_name                = "Hitachi Cayman",
 179         .mv_ioport_map          = cayman_ioport_map,
 180         .mv_init_irq            = init_cayman_irq,
 181 };