| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: setup.c,v 1.5 2003/08/04 01:51:58 lethal Exp $ |
| 2 | * |
| 3 | * arch/sh/kernel/setup_cqreek.c |
| 4 | * |
| 5 | * Copyright (C) 2000 Niibe Yutaka |
| 6 | * |
| 7 | * CqREEK IDE/ISA Bridge Support. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #include <linux/config.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/irq.h> |
| 15 | |
| 16 | #include <asm/mach/cqreek.h> |
| 17 | #include <asm/machvec.h> |
| 18 | #include <asm/io.h> |
| 19 | #include <asm/io_generic.h> |
| 20 | #include <asm/irq.h> |
| 21 | #include <asm/rtc.h> |
| 22 | |
| 23 | #define IDE_OFFSET 0xA4000000UL |
| 24 | #define ISA_OFFSET 0xA4A00000UL |
| 25 | |
| 26 | const char *get_system_type(void) |
| 27 | { |
| 28 | return "CqREEK"; |
| 29 | } |
| 30 | |
| 31 | static unsigned long cqreek_port2addr(unsigned long port) |
| 32 | { |
| 33 | if (0x0000<=port && port<=0x0040) |
| 34 | return IDE_OFFSET + port; |
| 35 | if ((0x01f0<=port && port<=0x01f7) || port == 0x03f6) |
| 36 | return IDE_OFFSET + port; |
| 37 | |
| 38 | return ISA_OFFSET + port; |
| 39 | } |
| 40 | |
| 41 | /* |
| 42 | * The Machine Vector |
| 43 | */ |
| 44 | struct sh_machine_vector mv_cqreek __initmv = { |
| 45 | #if defined(CONFIG_CPU_SH4) |
| 46 | .mv_nr_irqs = 48, |
| 47 | #elif defined(CONFIG_CPU_SUBTYPE_SH7708) |
| 48 | .mv_nr_irqs = 32, |
| 49 | #elif defined(CONFIG_CPU_SUBTYPE_SH7709) |
| 50 | .mv_nr_irqs = 61, |
| 51 | #endif |
| 52 | |
| 53 | .mv_init_irq = init_cqreek_IRQ, |
| 54 | |
| 55 | .mv_isa_port2addr = cqreek_port2addr, |
| 56 | }; |
| 57 | ALIAS_MV(cqreek) |
| 58 | |
| 59 | /* |
| 60 | * Initialize the board |
| 61 | */ |
| 62 | void __init platform_setup(void) |
| 63 | { |
| 64 | int i; |
| 65 | /* udelay is not available at setup time yet... */ |
| 66 | #define DELAY() do {for (i=0; i<10000; i++) ctrl_inw(0xa0000000);} while(0) |
| 67 | |
| 68 | if ((inw (BRIDGE_FEATURE) & 1)) { /* We have IDE interface */ |
| 69 | outw_p(0, BRIDGE_IDE_INTR_LVL); |
| 70 | outw_p(0, BRIDGE_IDE_INTR_MASK); |
| 71 | |
| 72 | outw_p(0, BRIDGE_IDE_CTRL); |
| 73 | DELAY(); |
| 74 | |
| 75 | outw_p(0x8000, BRIDGE_IDE_CTRL); |
| 76 | DELAY(); |
| 77 | |
| 78 | outw_p(0xffff, BRIDGE_IDE_INTR_STAT); /* Clear interrupt status */ |
| 79 | outw_p(0x0f-14, BRIDGE_IDE_INTR_LVL); /* Use 14 IPR */ |
| 80 | outw_p(1, BRIDGE_IDE_INTR_MASK); /* Enable interrupt */ |
| 81 | cqreek_has_ide=1; |
| 82 | } |
| 83 | |
| 84 | if ((inw (BRIDGE_FEATURE) & 2)) { /* We have ISA interface */ |
| 85 | outw_p(0, BRIDGE_ISA_INTR_LVL); |
| 86 | outw_p(0, BRIDGE_ISA_INTR_MASK); |
| 87 | |
| 88 | outw_p(0, BRIDGE_ISA_CTRL); |
| 89 | DELAY(); |
| 90 | outw_p(0x8000, BRIDGE_ISA_CTRL); |
| 91 | DELAY(); |
| 92 | |
| 93 | outw_p(0xffff, BRIDGE_ISA_INTR_STAT); /* Clear interrupt status */ |
| 94 | outw_p(0x0f-10, BRIDGE_ISA_INTR_LVL); /* Use 10 IPR */ |
| 95 | outw_p(0xfff8, BRIDGE_ISA_INTR_MASK); /* Enable interrupt */ |
| 96 | cqreek_has_isa=1; |
| 97 | } |
| 98 | |
| 99 | printk(KERN_INFO "CqREEK Setup (IDE=%d, ISA=%d)...done\n", cqreek_has_ide, cqreek_has_isa); |
| 100 | } |
| 101 | |