Commit | Line | Data |
---|---|---|
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> | |
1da177e4 LT |
17 | #include <linux/ide.h> |
18 | ||
d1881207 GU |
19 | #include <asm/ide.h> |
20 | ||
1da177e4 LT |
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 | */ |
f4d3ffa5 | 54 | static void q40_ide_setup_ports(struct ide_hw *hw, unsigned long base, int irq) |
1da177e4 | 55 | { |
9f36d314 | 56 | memset(hw, 0, sizeof(*hw)); |
d28aa3ac AV |
57 | /* BIG FAT WARNING: |
58 | assumption: only DATA port is ever used in 16 bit mode */ | |
59 | hw->io_ports.data_addr = Q40_ISA_IO_W(base); | |
60 | hw->io_ports.error_addr = Q40_ISA_IO_B(base + 1); | |
61 | hw->io_ports.nsect_addr = Q40_ISA_IO_B(base + 2); | |
62 | hw->io_ports.lbal_addr = Q40_ISA_IO_B(base + 3); | |
63 | hw->io_ports.lbam_addr = Q40_ISA_IO_B(base + 4); | |
64 | hw->io_ports.lbah_addr = Q40_ISA_IO_B(base + 5); | |
65 | hw->io_ports.device_addr = Q40_ISA_IO_B(base + 6); | |
66 | hw->io_ports.status_addr = Q40_ISA_IO_B(base + 7); | |
67 | hw->io_ports.ctl_addr = Q40_ISA_IO_B(base + 0x206); | |
86f3a492 | 68 | |
1da177e4 | 69 | hw->irq = irq; |
1da177e4 LT |
70 | } |
71 | ||
adb1af98 | 72 | static void q40ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, |
9567b349 | 73 | void *buf, unsigned int len) |
92d3ab27 | 74 | { |
9567b349 | 75 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
92d3ab27 | 76 | |
d1881207 GU |
77 | if (drive->media == ide_disk && cmd && (cmd->tf_flags & IDE_TFLAG_FS)) { |
78 | __ide_mm_insw(data_addr, buf, (len + 1) / 2); | |
79 | return; | |
80 | } | |
92d3ab27 | 81 | |
f94116ae | 82 | raw_insw_swapw((u16 *)data_addr, buf, (len + 1) / 2); |
92d3ab27 BZ |
83 | } |
84 | ||
adb1af98 | 85 | static void q40ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, |
9567b349 | 86 | void *buf, unsigned int len) |
92d3ab27 | 87 | { |
9567b349 BZ |
88 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
89 | ||
d1881207 GU |
90 | if (drive->media == ide_disk && cmd && (cmd->tf_flags & IDE_TFLAG_FS)) { |
91 | __ide_mm_outsw(data_addr, buf, (len + 1) / 2); | |
92 | return; | |
93 | } | |
92d3ab27 | 94 | |
f94116ae | 95 | raw_outsw_swapw((u16 *)data_addr, buf, (len + 1) / 2); |
92d3ab27 | 96 | } |
1da177e4 | 97 | |
374e042c BZ |
98 | /* Q40 has a byte-swapped IDE interface */ |
99 | static const struct ide_tp_ops q40ide_tp_ops = { | |
100 | .exec_command = ide_exec_command, | |
101 | .read_status = ide_read_status, | |
102 | .read_altstatus = ide_read_altstatus, | |
ecf3a31d | 103 | .write_devctl = ide_write_devctl, |
374e042c | 104 | |
abb596b2 | 105 | .dev_select = ide_dev_select, |
374e042c BZ |
106 | .tf_load = ide_tf_load, |
107 | .tf_read = ide_tf_read, | |
108 | ||
109 | .input_data = q40ide_input_data, | |
110 | .output_data = q40ide_output_data, | |
111 | }; | |
112 | ||
113 | static const struct ide_port_info q40ide_port_info = { | |
114 | .tp_ops = &q40ide_tp_ops, | |
09a3e791 | 115 | .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA, |
255115fb | 116 | .irq_flags = IRQF_SHARED, |
29e52cf7 | 117 | .chipset = ide_generic, |
374e042c BZ |
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; | |
9f36d314 | 135 | struct ide_hw hw[Q40IDE_NUM_HWIFS], *hws[] = { NULL, NULL }; |
1da177e4 LT |
136 | |
137 | if (!MACH_IS_Q40) | |
ade2daf9 | 138 | return -ENODEV; |
1da177e4 | 139 | |
c99c92c5 BZ |
140 | printk(KERN_INFO "ide: Q40 IDE controller\n"); |
141 | ||
1da177e4 | 142 | for (i = 0; i < Q40IDE_NUM_HWIFS; i++) { |
c97c6aca | 143 | const char *name = q40_ide_names[i]; |
1da177e4 | 144 | |
1da177e4 LT |
145 | if (!request_region(pcide_bases[i], 8, name)) { |
146 | printk("could not reserve ports %lx-%lx for %s\n", | |
147 | pcide_bases[i],pcide_bases[i]+8,name); | |
148 | continue; | |
149 | } | |
150 | if (!request_region(pcide_bases[i]+0x206, 1, name)) { | |
151 | printk("could not reserve port %lx for %s\n", | |
152 | pcide_bases[i]+0x206,name); | |
153 | release_region(pcide_bases[i], 8); | |
154 | continue; | |
155 | } | |
f4d3ffa5 | 156 | q40_ide_setup_ports(&hw[i], pcide_bases[i], |
1da177e4 | 157 | q40ide_default_irq(pcide_bases[i])); |
cbb010c1 | 158 | |
48c3c107 | 159 | hws[i] = &hw[i]; |
1da177e4 | 160 | } |
8ac4ce74 | 161 | |
dca39830 | 162 | return ide_host_add(&q40ide_port_info, hws, Q40IDE_NUM_HWIFS, NULL); |
1da177e4 LT |
163 | } |
164 | ||
ade2daf9 | 165 | module_init(q40ide_init); |
f743d04d AB |
166 | |
167 | MODULE_LICENSE("GPL"); |