Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Bartlomiej Zolnierkiewicz | 58f189f | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 2 | * Macintosh IDE Driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 1998 by Michael Schmitz |
| 5 | * |
| 6 | * This driver was written based on information obtained from the MacOS IDE |
| 7 | * driver binary by Mikael Forselius |
| 8 | * |
| 9 | * This file is subject to the terms and conditions of the GNU General Public |
| 10 | * License. See the file COPYING in the main directory of this archive for |
| 11 | * more details. |
| 12 | */ |
| 13 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/types.h> |
| 15 | #include <linux/mm.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/blkdev.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/delay.h> |
| 19 | #include <linux/ide.h> |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <asm/macintosh.h> |
| 22 | #include <asm/macints.h> |
| 23 | #include <asm/mac_baboon.h> |
| 24 | |
| 25 | #define IDE_BASE 0x50F1A000 /* Base address of IDE controller */ |
| 26 | |
| 27 | /* |
| 28 | * Generic IDE registers as offsets from the base |
| 29 | * These match MkLinux so they should be correct. |
| 30 | */ |
| 31 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #define IDE_CONTROL 0x38 /* control/altstatus */ |
| 33 | |
| 34 | /* |
| 35 | * Mac-specific registers |
| 36 | */ |
| 37 | |
| 38 | /* |
| 39 | * this register is odd; it doesn't seem to do much and it's |
| 40 | * not word-aligned like virtually every other hardware register |
| 41 | * on the Mac... |
| 42 | */ |
| 43 | |
| 44 | #define IDE_IFR 0x101 /* (0x101) IDE interrupt flags on Quadra: |
| 45 | * |
| 46 | * Bit 0+1: some interrupt flags |
| 47 | * Bit 2+3: some interrupt enable |
| 48 | * Bit 4: ?? |
| 49 | * Bit 5: IDE interrupt flag (any hwif) |
| 50 | * Bit 6: maybe IDE interrupt enable (any hwif) ?? |
| 51 | * Bit 7: Any interrupt condition |
| 52 | */ |
| 53 | |
| 54 | volatile unsigned char *ide_ifr = (unsigned char *) (IDE_BASE + IDE_IFR); |
| 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | int macide_ack_intr(ide_hwif_t* hwif) |
| 57 | { |
| 58 | if (*ide_ifr & 0x20) { |
| 59 | *ide_ifr &= ~0x20; |
| 60 | return 1; |
| 61 | } |
| 62 | return 0; |
| 63 | } |
| 64 | |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 65 | static void __init macide_setup_ports(hw_regs_t *hw, unsigned long base, |
| 66 | int irq, ide_ack_intr_t *ack_intr) |
| 67 | { |
| 68 | int i; |
| 69 | |
| 70 | memset(hw, 0, sizeof(*hw)); |
| 71 | |
| 72 | for (i = 0; i < 8; i++) |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 73 | hw->io_ports_array[i] = base + i * 4; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 74 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 75 | hw->io_ports.ctl_addr = base + IDE_CONTROL; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 76 | |
| 77 | hw->irq = irq; |
| 78 | hw->ack_intr = ack_intr; |
Bartlomiej Zolnierkiewicz | d427e83 | 2008-06-10 20:56:37 +0200 | [diff] [blame] | 79 | |
| 80 | hw->chipset = ide_generic; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 81 | } |
| 82 | |
Bartlomiej Zolnierkiewicz | 211176c | 2009-03-27 12:46:18 +0100 | [diff] [blame] | 83 | static const struct ide_port_info macide_port_info = { |
Bartlomiej Zolnierkiewicz | 09a3e79 | 2009-03-27 12:46:23 +0100 | [diff] [blame] | 84 | .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA, |
Bartlomiej Zolnierkiewicz | 255115fb | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 85 | .irq_flags = IRQF_SHARED, |
Bartlomiej Zolnierkiewicz | 211176c | 2009-03-27 12:46:18 +0100 | [diff] [blame] | 86 | }; |
| 87 | |
Bartlomiej Zolnierkiewicz | c99c92c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 88 | static const char *mac_ide_name[] = |
| 89 | { "Quadra", "Powerbook", "Powerbook Baboon" }; |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* |
| 92 | * Probe for a Macintosh IDE interface |
| 93 | */ |
| 94 | |
Bartlomiej Zolnierkiewicz | ade2daf | 2008-01-26 20:13:07 +0100 | [diff] [blame] | 95 | static int __init macide_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | { |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 97 | ide_ack_intr_t *ack_intr; |
| 98 | unsigned long base; |
| 99 | int irq; |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 100 | hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
Geert Uytterhoeven | 3ce92a2 | 2008-05-18 20:47:14 +0200 | [diff] [blame] | 102 | if (!MACH_IS_MAC) |
| 103 | return -ENODEV; |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | switch (macintosh_config->ide_type) { |
| 106 | case MAC_IDE_QUADRA: |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 107 | base = IDE_BASE; |
| 108 | ack_intr = macide_ack_intr; |
| 109 | irq = IRQ_NUBUS_F; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | break; |
| 111 | case MAC_IDE_PB: |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 112 | base = IDE_BASE; |
| 113 | ack_intr = macide_ack_intr; |
| 114 | irq = IRQ_NUBUS_C; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | break; |
| 116 | case MAC_IDE_BABOON: |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 117 | base = BABOON_BASE; |
| 118 | ack_intr = NULL; |
| 119 | irq = IRQ_BABOON_1; |
Bartlomiej Zolnierkiewicz | cbb010c | 2008-01-26 20:13:06 +0100 | [diff] [blame] | 120 | break; |
| 121 | default: |
Bartlomiej Zolnierkiewicz | ade2daf | 2008-01-26 20:13:07 +0100 | [diff] [blame] | 122 | return -ENODEV; |
Bartlomiej Zolnierkiewicz | cbb010c | 2008-01-26 20:13:06 +0100 | [diff] [blame] | 123 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
Bartlomiej Zolnierkiewicz | c99c92c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 125 | printk(KERN_INFO "ide: Macintosh %s IDE controller\n", |
| 126 | mac_ide_name[macintosh_config->ide_type - 1]); |
| 127 | |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 128 | macide_setup_ports(&hw, base, irq, ack_intr); |
| 129 | |
Bartlomiej Zolnierkiewicz | 211176c | 2009-03-27 12:46:18 +0100 | [diff] [blame] | 130 | return ide_host_add(&macide_port_info, hws, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | } |
Bartlomiej Zolnierkiewicz | ade2daf | 2008-01-26 20:13:07 +0100 | [diff] [blame] | 132 | |
| 133 | module_init(macide_init); |
Adrian Bunk | 37c807a | 2008-04-02 21:22:04 +0200 | [diff] [blame] | 134 | |
| 135 | MODULE_LICENSE("GPL"); |