blob: 31e54ffdfee4c8604683fa881441ea49e780b65e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/drivers/ide/legacy/q40ide.c -- Q40 I/O port IDE Driver
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
34static const unsigned long pcide_bases[Q40IDE_NUM_HWIFS] = {
35 PCIDE_BASE1, PCIDE_BASE2, /* PCIDE_BASE3, PCIDE_BASE4 , PCIDE_BASE5,
36 PCIDE_BASE6 */
37};
38
39
40 /*
41 * Offsets from one of the above bases
42 */
43
44/* used to do addr translation here but it is easier to do in setup ports */
45/*#define IDE_OFF_B(x) ((unsigned long)Q40_ISA_IO_B((IDE_##x##_OFFSET)))*/
46
47#define IDE_OFF_B(x) ((unsigned long)((IDE_##x##_OFFSET)))
48#define IDE_OFF_W(x) ((unsigned long)((IDE_##x##_OFFSET)))
49
50static const int pcide_offsets[IDE_NR_PORTS] = {
51 IDE_OFF_W(DATA), IDE_OFF_B(ERROR), IDE_OFF_B(NSECTOR), IDE_OFF_B(SECTOR),
52 IDE_OFF_B(LCYL), IDE_OFF_B(HCYL), 6 /*IDE_OFF_B(CURRENT)*/, IDE_OFF_B(STATUS),
53 518/*IDE_OFF(CMD)*/
54};
55
56static int q40ide_default_irq(unsigned long base)
57{
58 switch (base) {
59 case 0x1f0: return 14;
60 case 0x170: return 15;
61 case 0x1e8: return 11;
62 default:
63 return 0;
64 }
65}
66
67
68/*
69 * This is very similar to ide_setup_ports except that addresses
70 * are pretranslated for q40 ISA access
71 */
72void q40_ide_setup_ports ( hw_regs_t *hw,
73 unsigned long base, int *offsets,
74 unsigned long ctrl, unsigned long intr,
75 ide_ack_intr_t *ack_intr,
76/*
77 * ide_io_ops_t *iops,
78 */
79 int irq)
80{
81 int i;
82
Roman Zippel2c3e0262006-06-23 02:04:51 -070083 memset(hw, 0, sizeof(hw_regs_t));
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 for (i = 0; i < IDE_NR_PORTS; i++) {
85 /* BIG FAT WARNING:
86 assumption: only DATA port is ever used in 16 bit mode */
87 if ( i==0 )
88 hw->io_ports[i] = Q40_ISA_IO_W(base + offsets[i]);
89 else
90 hw->io_ports[i] = Q40_ISA_IO_B(base + offsets[i]);
91 }
Bartlomiej Zolnierkiewicz86f3a492007-10-20 00:32:32 +020092
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 hw->irq = irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 hw->ack_intr = ack_intr;
95/*
96 * hw->iops = iops;
97 */
98}
99
100
101
102/*
103 * the static array is needed to have the name reported in /proc/ioports,
Jan Engelhardt96de0e22007-10-19 23:21:04 +0200104 * hwif->name unfortunately isn't available yet
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 */
106static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={
107 "ide0", "ide1"
108};
109
110/*
111 * Probe for Q40 IDE interfaces
112 */
113
Bartlomiej Zolnierkiewicz355bd122007-11-27 21:35:54 +0100114void __init q40ide_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115{
116 int i;
117 ide_hwif_t *hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 const char *name;
119
120 if (!MACH_IS_Q40)
121 return ;
122
123 for (i = 0; i < Q40IDE_NUM_HWIFS; i++) {
124 hw_regs_t hw;
125
126 name = q40_ide_names[i];
127 if (!request_region(pcide_bases[i], 8, name)) {
128 printk("could not reserve ports %lx-%lx for %s\n",
129 pcide_bases[i],pcide_bases[i]+8,name);
130 continue;
131 }
132 if (!request_region(pcide_bases[i]+0x206, 1, name)) {
133 printk("could not reserve port %lx for %s\n",
134 pcide_bases[i]+0x206,name);
135 release_region(pcide_bases[i], 8);
136 continue;
137 }
138 q40_ide_setup_ports(&hw,(unsigned long) pcide_bases[i], (int *)pcide_offsets,
139 pcide_bases[i]+0x206,
140 0, NULL,
141// m68kide_iops,
142 q40ide_default_irq(pcide_bases[i]));
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100143
144 hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
145 if (hwif) {
146 ide_init_port_data(hwif, hwif->index);
147 ide_init_port_hw(hwif, &hw);
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100148 hwif->mmio = 1;
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100149 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 }
151}
152