| 1 | |
| 2 | #include <linux/ioport.h>
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| 3 | #include <asm/io.h>
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| 4 |
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| 5 | #include "pc873xx.h"
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| 6 |
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| 7 | static unsigned pc873xx_probelist[] = {0x398, 0x26e, 0};
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| 8 |
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| 9 | static char *pc873xx_names[] = {
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| 10 | "PC87303", "PC87306", "PC87312", "PC87332", "PC87334"
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| 11 | };
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| 12 |
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| 13 | static unsigned int base, model;
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| 14 |
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| 15 |
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| 16 | unsigned int __init pc873xx_get_base(void)
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| 17 | {
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| 18 | return base;
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| 19 | }
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| 20 |
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| 21 | char *__init pc873xx_get_model(void)
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| 22 | {
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| 23 | return pc873xx_names[model];
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| 24 | }
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| 25 |
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| 26 | static unsigned char __init pc873xx_read(unsigned int base, int reg)
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| 27 | {
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| 28 | outb(reg, base);
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| 29 | return inb(base + 1);
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| 30 | }
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| 31 |
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| 32 | static void __init pc873xx_write(unsigned int base, int reg, unsigned char data)
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| 33 | {
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| 34 | unsigned long flags;
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| 35 |
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| 36 | local_irq_save(flags);
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| 37 | outb(reg, base);
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| 38 | outb(data, base + 1);
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| 39 | outb(data, base + 1);
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| 40 | local_irq_restore(flags);
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| 41 | }
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| 42 |
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| 43 | int __init pc873xx_probe(void)
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| 44 | {
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| 45 | int val, index = 0;
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| 46 |
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| 47 | while ((base = pc873xx_probelist[index++])) {
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| 48 |
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| 49 | if (request_region(base, 2, "Super IO PC873xx") == NULL)
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| 50 | continue;
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| 51 |
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| 52 | val = pc873xx_read(base, REG_SID);
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| 53 | if ((val & 0xf0) == 0x10) {
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| 54 | model = PC87332;
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| 55 | break;
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| 56 | } else if ((val & 0xf8) == 0x70) {
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| 57 | model = PC87306;
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| 58 | break;
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| 59 | } else if ((val & 0xf8) == 0x50) {
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| 60 | model = PC87334;
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| 61 | break;
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| 62 | } else if ((val & 0xf8) == 0x40) {
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| 63 | model = PC87303;
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| 64 | break;
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| 65 | }
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| 66 |
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| 67 | release_region(base, 2);
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| 68 | }
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| 69 |
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| 70 | return (base == 0) ? -1 : 1;
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| 71 | }
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| 72 |
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| 73 | void __init pc873xx_enable_epp19(void)
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| 74 | {
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| 75 | unsigned char data;
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| 76 |
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| 77 | printk(KERN_INFO "PC873xx enabling EPP v1.9\n");
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| 78 | data = pc873xx_read(base, REG_PCR);
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| 79 | pc873xx_write(base, REG_PCR, (data & 0xFC) | 0x02);
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| 80 | }
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| 81 |
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| 82 | void __init pc873xx_enable_ide(void)
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| 83 | {
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| 84 | unsigned char data;
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| 85 |
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| 86 | printk(KERN_INFO "PC873xx enabling IDE interrupt\n");
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| 87 | data = pc873xx_read(base, REG_FER);
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| 88 | pc873xx_write(base, REG_FER, data | 0x40);
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| 89 | }
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