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 | * Atari Falcon IDE Driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * Created 12 Jul 1997 by Geert Uytterhoeven |
| 5 | * |
| 6 | * This file is subject to the terms and conditions of the GNU General Public |
| 7 | * License. See the file COPYING in the main directory of this archive for |
| 8 | * more details. |
| 9 | */ |
| 10 | |
Al Viro | 88f8bb780 | 2007-07-20 04:33:18 +0100 | [diff] [blame] | 11 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/types.h> |
| 13 | #include <linux/mm.h> |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/blkdev.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/ide.h> |
| 17 | #include <linux/init.h> |
| 18 | |
| 19 | #include <asm/setup.h> |
| 20 | #include <asm/atarihw.h> |
| 21 | #include <asm/atariints.h> |
| 22 | #include <asm/atari_stdma.h> |
| 23 | |
Bartlomiej Zolnierkiewicz | cb5528a | 2008-04-26 17:36:38 +0200 | [diff] [blame] | 24 | #define DRV_NAME "falconide" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
| 26 | /* |
| 27 | * Base of the IDE interface |
| 28 | */ |
| 29 | |
| 30 | #define ATA_HD_BASE 0xfff00000 |
| 31 | |
| 32 | /* |
| 33 | * Offsets from the above base |
| 34 | */ |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #define ATA_HD_CONTROL 0x39 |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | /* |
| 39 | * falconide_intr_lock is used to obtain access to the IDE interrupt, |
| 40 | * which is shared between several drivers. |
| 41 | */ |
| 42 | |
| 43 | int falconide_intr_lock; |
Al Viro | 88f8bb780 | 2007-07-20 04:33:18 +0100 | [diff] [blame] | 44 | EXPORT_SYMBOL(falconide_intr_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 46 | static void falconide_input_data(ide_drive_t *drive, struct request *rq, |
| 47 | void *buf, unsigned int len) |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 48 | { |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 49 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 50 | |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 51 | if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 52 | return insw(data_addr, buf, (len + 1) / 2); |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 53 | |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 54 | insw_swapw(data_addr, buf, (len + 1) / 2); |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 55 | } |
| 56 | |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 57 | static void falconide_output_data(ide_drive_t *drive, struct request *rq, |
| 58 | void *buf, unsigned int len) |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 59 | { |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 60 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 61 | |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 62 | if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) |
Geert Uytterhoeven | ab1a852 | 2008-05-05 21:15:19 +0200 | [diff] [blame] | 63 | return outsw(data_addr, buf, (len + 1) / 2); |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 64 | |
| 65 | outsw_swapw(data_addr, buf, (len + 1) / 2); |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 66 | } |
| 67 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 68 | /* Atari has a byte-swapped IDE interface */ |
| 69 | static const struct ide_tp_ops falconide_tp_ops = { |
| 70 | .exec_command = ide_exec_command, |
| 71 | .read_status = ide_read_status, |
| 72 | .read_altstatus = ide_read_altstatus, |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 73 | |
| 74 | .set_irq = ide_set_irq, |
| 75 | |
| 76 | .tf_load = ide_tf_load, |
| 77 | .tf_read = ide_tf_read, |
| 78 | |
| 79 | .input_data = falconide_input_data, |
| 80 | .output_data = falconide_output_data, |
| 81 | }; |
| 82 | |
| 83 | static const struct ide_port_info falconide_port_info = { |
| 84 | .tp_ops = &falconide_tp_ops, |
| 85 | .host_flags = IDE_HFLAG_NO_DMA, |
| 86 | }; |
| 87 | |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 88 | static void __init falconide_setup_ports(hw_regs_t *hw) |
| 89 | { |
| 90 | int i; |
| 91 | |
| 92 | memset(hw, 0, sizeof(*hw)); |
| 93 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 94 | hw->io_ports.data_addr = ATA_HD_BASE; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 95 | |
| 96 | for (i = 1; i < 8; i++) |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 97 | hw->io_ports_array[i] = ATA_HD_BASE + 1 + i * 4; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 98 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 99 | hw->io_ports.ctl_addr = ATA_HD_BASE + ATA_HD_CONTROL; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 100 | |
| 101 | hw->irq = IRQ_MFP_IDE; |
| 102 | hw->ack_intr = NULL; |
Bartlomiej Zolnierkiewicz | d427e83 | 2008-06-10 20:56:37 +0200 | [diff] [blame] | 103 | |
| 104 | hw->chipset = ide_generic; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 105 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | /* |
| 108 | * Probe for a Falcon IDE interface |
| 109 | */ |
| 110 | |
Bartlomiej Zolnierkiewicz | ade2daf | 2008-01-26 20:13:07 +0100 | [diff] [blame] | 111 | static int __init falconide_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | { |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 113 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 114 | hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 115 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 117 | if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE)) |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 118 | return -ENODEV; |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 119 | |
Bartlomiej Zolnierkiewicz | c99c92c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 120 | printk(KERN_INFO "ide: Falcon IDE controller\n"); |
| 121 | |
Bartlomiej Zolnierkiewicz | cb5528a | 2008-04-26 17:36:38 +0200 | [diff] [blame] | 122 | if (!request_mem_region(ATA_HD_BASE, 0x40, DRV_NAME)) { |
| 123 | printk(KERN_ERR "%s: resources busy\n", DRV_NAME); |
| 124 | return -EBUSY; |
| 125 | } |
| 126 | |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 127 | falconide_setup_ports(&hw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 129 | host = ide_host_alloc(&falconide_port_info, hws); |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 130 | if (host == NULL) { |
| 131 | rc = -ENOMEM; |
| 132 | goto err; |
Bartlomiej Zolnierkiewicz | cbb010c | 2008-01-26 20:13:06 +0100 | [diff] [blame] | 133 | } |
Bartlomiej Zolnierkiewicz | ade2daf | 2008-01-26 20:13:07 +0100 | [diff] [blame] | 134 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 135 | ide_get_lock(NULL, NULL); |
| 136 | rc = ide_host_register(host, &falconide_port_info, hws); |
| 137 | ide_release_lock(); |
| 138 | |
| 139 | if (rc) |
| 140 | goto err_free; |
| 141 | |
Bartlomiej Zolnierkiewicz | 29dd597 | 2008-02-06 02:57:50 +0100 | [diff] [blame] | 142 | return 0; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 143 | err_free: |
| 144 | ide_host_free(host); |
| 145 | err: |
| 146 | release_mem_region(ATA_HD_BASE, 0x40); |
| 147 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
Bartlomiej Zolnierkiewicz | ade2daf | 2008-01-26 20:13:07 +0100 | [diff] [blame] | 149 | |
| 150 | module_init(falconide_init); |
Adrian Bunk | 0c5ec97 | 2008-04-02 21:22:04 +0200 | [diff] [blame] | 151 | |
| 152 | MODULE_LICENSE("GPL"); |