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Commit | Line | Data |
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1da177e4 | 1 | /* |
58f189fc | 2 | * Q40 I/O port IDE Driver |
1da177e4 LT |
3 | * |
4 | * (c) Richard Zidlicky | |
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 | * | |
11 | */ | |
12 | ||
13 | #include <linux/types.h> | |
14 | #include <linux/mm.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/blkdev.h> | |
17 | #include <linux/hdreg.h> | |
18 | ||
19 | #include <linux/ide.h> | |
20 | ||
21 | /* | |
22 | * Bases of the IDE interfaces | |
23 | */ | |
24 | ||
25 | #define Q40IDE_NUM_HWIFS 2 | |
26 | ||
27 | #define PCIDE_BASE1 0x1f0 | |
28 | #define PCIDE_BASE2 0x170 | |
29 | #define PCIDE_BASE3 0x1e8 | |
30 | #define PCIDE_BASE4 0x168 | |
31 | #define PCIDE_BASE5 0x1e0 | |
32 | #define PCIDE_BASE6 0x160 | |
33 | ||
34 | static const unsigned long pcide_bases[Q40IDE_NUM_HWIFS] = { | |
35 | PCIDE_BASE1, PCIDE_BASE2, /* PCIDE_BASE3, PCIDE_BASE4 , PCIDE_BASE5, | |
36 | PCIDE_BASE6 */ | |
37 | }; | |
38 | ||
1da177e4 LT |
39 | static int q40ide_default_irq(unsigned long base) |
40 | { | |
41 | switch (base) { | |
42 | case 0x1f0: return 14; | |
43 | case 0x170: return 15; | |
44 | case 0x1e8: return 11; | |
45 | default: | |
46 | return 0; | |
47 | } | |
48 | } | |
49 | ||
50 | ||
51 | /* | |
29dd5975 | 52 | * Addresses are pretranslated for Q40 ISA access. |
1da177e4 | 53 | */ |
d28aa3ac | 54 | static void q40_ide_setup_ports(hw_regs_t *hw, unsigned long base, |
1da177e4 | 55 | ide_ack_intr_t *ack_intr, |
1da177e4 LT |
56 | int irq) |
57 | { | |
2c3e0262 | 58 | memset(hw, 0, sizeof(hw_regs_t)); |
d28aa3ac AV |
59 | /* BIG FAT WARNING: |
60 | assumption: only DATA port is ever used in 16 bit mode */ | |
61 | hw->io_ports.data_addr = Q40_ISA_IO_W(base); | |
62 | hw->io_ports.error_addr = Q40_ISA_IO_B(base + 1); | |
63 | hw->io_ports.nsect_addr = Q40_ISA_IO_B(base + 2); | |
64 | hw->io_ports.lbal_addr = Q40_ISA_IO_B(base + 3); | |
65 | hw->io_ports.lbam_addr = Q40_ISA_IO_B(base + 4); | |
66 | hw->io_ports.lbah_addr = Q40_ISA_IO_B(base + 5); | |
67 | hw->io_ports.device_addr = Q40_ISA_IO_B(base + 6); | |
68 | hw->io_ports.status_addr = Q40_ISA_IO_B(base + 7); | |
69 | hw->io_ports.ctl_addr = Q40_ISA_IO_B(base + 0x206); | |
86f3a492 | 70 | |
1da177e4 | 71 | hw->irq = irq; |
1da177e4 | 72 | hw->ack_intr = ack_intr; |
d427e836 BZ |
73 | |
74 | hw->chipset = ide_generic; | |
1da177e4 LT |
75 | } |
76 | ||
9567b349 BZ |
77 | static void q40ide_input_data(ide_drive_t *drive, struct request *rq, |
78 | void *buf, unsigned int len) | |
92d3ab27 | 79 | { |
9567b349 | 80 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
92d3ab27 | 81 | |
92d3ab27 | 82 | if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) |
9567b349 | 83 | return insw(data_addr, buf, (len + 1) / 2); |
92d3ab27 | 84 | |
9567b349 | 85 | insw_swapw(data_addr, buf, (len + 1) / 2); |
92d3ab27 BZ |
86 | } |
87 | ||
9567b349 BZ |
88 | static void q40ide_output_data(ide_drive_t *drive, struct request *rq, |
89 | void *buf, unsigned int len) | |
92d3ab27 | 90 | { |
9567b349 BZ |
91 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
92 | ||
92d3ab27 | 93 | if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) |
9567b349 | 94 | return outsw(data_addr, buf, (len + 1) / 2); |
92d3ab27 | 95 | |
9567b349 | 96 | outsw_swapw(data_addr, buf, (len + 1) / 2); |
92d3ab27 | 97 | } |
1da177e4 | 98 | |
374e042c BZ |
99 | /* Q40 has a byte-swapped IDE interface */ |
100 | static const struct ide_tp_ops q40ide_tp_ops = { | |
101 | .exec_command = ide_exec_command, | |
102 | .read_status = ide_read_status, | |
103 | .read_altstatus = ide_read_altstatus, | |
104 | .read_sff_dma_status = ide_read_sff_dma_status, | |
105 | ||
106 | .set_irq = ide_set_irq, | |
107 | ||
108 | .tf_load = ide_tf_load, | |
109 | .tf_read = ide_tf_read, | |
110 | ||
111 | .input_data = q40ide_input_data, | |
112 | .output_data = q40ide_output_data, | |
113 | }; | |
114 | ||
115 | static const struct ide_port_info q40ide_port_info = { | |
116 | .tp_ops = &q40ide_tp_ops, | |
117 | .host_flags = IDE_HFLAG_NO_DMA, | |
118 | }; | |
119 | ||
1da177e4 LT |
120 | /* |
121 | * the static array is needed to have the name reported in /proc/ioports, | |
96de0e25 | 122 | * hwif->name unfortunately isn't available yet |
1da177e4 LT |
123 | */ |
124 | static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={ | |
125 | "ide0", "ide1" | |
126 | }; | |
127 | ||
128 | /* | |
129 | * Probe for Q40 IDE interfaces | |
130 | */ | |
131 | ||
ade2daf9 | 132 | static int __init q40ide_init(void) |
1da177e4 LT |
133 | { |
134 | int i; | |
135 | ide_hwif_t *hwif; | |
c97c6aca | 136 | hw_regs_t hw[Q40IDE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL }; |
8ac4ce74 | 137 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
1da177e4 LT |
138 | |
139 | if (!MACH_IS_Q40) | |
ade2daf9 | 140 | return -ENODEV; |
1da177e4 | 141 | |
c99c92c5 BZ |
142 | printk(KERN_INFO "ide: Q40 IDE controller\n"); |
143 | ||
1da177e4 | 144 | for (i = 0; i < Q40IDE_NUM_HWIFS; i++) { |
c97c6aca | 145 | const char *name = q40_ide_names[i]; |
1da177e4 | 146 | |
1da177e4 LT |
147 | if (!request_region(pcide_bases[i], 8, name)) { |
148 | printk("could not reserve ports %lx-%lx for %s\n", | |
149 | pcide_bases[i],pcide_bases[i]+8,name); | |
150 | continue; | |
151 | } | |
152 | if (!request_region(pcide_bases[i]+0x206, 1, name)) { | |
153 | printk("could not reserve port %lx for %s\n", | |
154 | pcide_bases[i]+0x206,name); | |
155 | release_region(pcide_bases[i], 8); | |
156 | continue; | |
157 | } | |
c97c6aca | 158 | q40_ide_setup_ports(&hw[i], pcide_bases[i], NULL, |
1da177e4 | 159 | q40ide_default_irq(pcide_bases[i])); |
cbb010c1 | 160 | |
59bff5ba | 161 | hwif = ide_find_port(); |
cbb010c1 | 162 | if (hwif) { |
c97c6aca | 163 | hwif->chipset = ide_generic; |
8ac4ce74 | 164 | |
c97c6aca | 165 | hws[i] = &hw[i]; |
8ac4ce74 | 166 | idx[i] = hwif->index; |
cbb010c1 | 167 | } |
1da177e4 | 168 | } |
8ac4ce74 | 169 | |
374e042c | 170 | ide_device_add(idx, &q40ide_port_info, hws); |
ade2daf9 BZ |
171 | |
172 | return 0; | |
1da177e4 LT |
173 | } |
174 | ||
ade2daf9 | 175 | module_init(q40ide_init); |
f743d04d AB |
176 | |
177 | MODULE_LICENSE("GPL"); |