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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | /* * Setup pointers to hardware dependand routines. * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1996, 1997 by Ralf Baechle */ #include <asm/ptrace.h> #include <linux/ioport.h> #include <linux/sched.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/timex.h> #include <linux/pci.h> #include <asm/bootinfo.h> #include <asm/keyboard.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/processor.h> #include <asm/reboot.h> #include <asm/sni.h> #include <asm/vector.h> #include <asm/pci.h> /* * Initial irq handlers. */ static void no_action(int cpl, void *dev_id, struct pt_regs *regs) { } /* * IRQ2 is cascade interrupt to second interrupt controller */ static struct irqaction irq2 = { no_action, 0, 0, "cascade", NULL, NULL}; extern asmlinkage void sni_rm200_pci_handle_int(void); extern asmlinkage void sni_fd_cacheflush(const void *addr, size_t size); extern struct feature sni_rm200_pci_feature; extern void sni_rm200_keyboard_setup(void); extern void sni_machine_restart(char *command); extern void sni_machine_halt(void); extern void sni_machine_power_off(void); __initfunc(static void sni_irq_setup(void)) { set_except_vector(0, sni_rm200_pci_handle_int); request_region(0x20,0x20, "pic1"); request_region(0xa0,0x20, "pic2"); setup_x86_irq(2, &irq2); /* * IRQ0 seems to be the irq for PC style stuff. * I don't know how to handle the debug button interrupt, so * don't use this button yet or bad things happen ... */ set_cp0_status(ST0_IM, IE_IRQ0); } void (*board_time_init)(struct irqaction *irq); __initfunc(static void sni_rm200_pci_time_init(struct irqaction *irq)) { /* set the clock to 100 Hz */ outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */ outb_p(LATCH & 0xff , 0x40); /* LSB */ outb(LATCH >> 8 , 0x40); /* MSB */ setup_x86_irq(0, irq); } unsigned char aux_device_present; extern unsigned long sni_rm200_pcibios_init (unsigned long memory_start, unsigned long memory_end); extern unsigned char sni_map_isa_cache; /* * A bit more gossip about the iron we're running on ... */ static inline void sni_pcimt_detect(void) { char boardtype[80]; unsigned char csmsr; char *p = boardtype; int asic; csmsr = *(volatile unsigned char *)PCIMT_CSMSR; p += sprintf(p, "%s PCI", (csmsr & 0x80) ? "RM200" : "RM300"); if ((csmsr & 0x80) == 0) p += sprintf(p, ", board revision %s", (csmsr & 0x20) ? "D" : "C"); asic = csmsr & 0x80; asic = (csmsr & 0x08) ? asic : !asic; p += sprintf(p, ", ASIC PCI Rev %s", asic ? "1.0" : "1.1"); printk("%s.\n", boardtype); } __initfunc(void sni_rm200_pci_setup(void)) { tag *atag; /* * We just check if a tag_screen_info can be gathered * in setup_arch(), if yes we don't proceed futher... */ atag = bi_TagFind(tag_screen_info); if (!atag) { /* * If no, we try to find the tag_arc_displayinfo which is * always created by Milo for an ARC box (for now Milo only * works on ARC boxes :) -Stoned. */ atag = bi_TagFind(tag_arcdisplayinfo); if (atag) { screen_info.orig_x = ((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_x; screen_info.orig_y = ((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_y; screen_info.orig_video_cols = ((mips_arc_DisplayInfo*)TAGVALPTR(atag))->columns; screen_info.orig_video_lines = ((mips_arc_DisplayInfo*)TAGVALPTR(atag))->lines; } } sni_pcimt_detect(); irq_setup = sni_irq_setup; fd_cacheflush = sni_fd_cacheflush; // Will go away feature = &sni_rm200_pci_feature; port_base = SNI_PORT_BASE; keyboard_setup = sni_rm200_keyboard_setup; /* * Setup (E)ISA I/O memory access stuff */ isa_slot_offset = 0xb0000000; // sni_map_isa_cache = 0; EISA_bus = 1; request_region(0x00,0x20,"dma1"); request_region(0x40,0x20,"timer"); /* XXX FIXME: CONFIG_RTC */ request_region(0x70,0x10,"rtc"); request_region(0x80,0x10,"dma page reg"); request_region(0xc0,0x20,"dma2"); board_time_init = sni_rm200_pci_time_init; _machine_restart = sni_machine_restart; _machine_halt = sni_machine_halt; _machine_power_off = sni_machine_power_off; aux_device_present = 0xaa; /* * Some cluefull person has placed the PCI config data directly in * the I/O port space ... */ request_region(0xcfc,0x04,"PCI config data"); _pcibios_init = sni_rm200_pcibios_init; } |