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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Bartlomiej Zolnierkiewicz58f189f2008-02-01 23:09:33 +01002 * Q40 I/O port IDE Driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
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/*
Bartlomiej Zolnierkiewicz29dd5972008-02-06 02:57:50 +010069 * Addresses are pretranslated for Q40 ISA access.
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 */
71void q40_ide_setup_ports ( hw_regs_t *hw,
72 unsigned long base, int *offsets,
73 unsigned long ctrl, unsigned long intr,
74 ide_ack_intr_t *ack_intr,
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 int irq)
76{
77 int i;
78
Roman Zippel2c3e0262006-06-23 02:04:51 -070079 memset(hw, 0, sizeof(hw_regs_t));
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 for (i = 0; i < IDE_NR_PORTS; i++) {
81 /* BIG FAT WARNING:
82 assumption: only DATA port is ever used in 16 bit mode */
83 if ( i==0 )
84 hw->io_ports[i] = Q40_ISA_IO_W(base + offsets[i]);
85 else
86 hw->io_ports[i] = Q40_ISA_IO_B(base + offsets[i]);
87 }
Bartlomiej Zolnierkiewicz86f3a492007-10-20 00:32:32 +020088
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 hw->irq = irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 hw->ack_intr = ack_intr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070091}
92
93
94
95/*
96 * the static array is needed to have the name reported in /proc/ioports,
Jan Engelhardt96de0e22007-10-19 23:21:04 +020097 * hwif->name unfortunately isn't available yet
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 */
99static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={
100 "ide0", "ide1"
101};
102
103/*
104 * Probe for Q40 IDE interfaces
105 */
106
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +0100107static int __init q40ide_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108{
109 int i;
110 ide_hwif_t *hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 const char *name;
Bartlomiej Zolnierkiewicz8ac4ce72008-01-26 20:13:06 +0100112 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
114 if (!MACH_IS_Q40)
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +0100115 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116
Bartlomiej Zolnierkiewiczc99c92c2008-01-26 20:13:09 +0100117 printk(KERN_INFO "ide: Q40 IDE controller\n");
118
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 for (i = 0; i < Q40IDE_NUM_HWIFS; i++) {
120 hw_regs_t hw;
121
122 name = q40_ide_names[i];
123 if (!request_region(pcide_bases[i], 8, name)) {
124 printk("could not reserve ports %lx-%lx for %s\n",
125 pcide_bases[i],pcide_bases[i]+8,name);
126 continue;
127 }
128 if (!request_region(pcide_bases[i]+0x206, 1, name)) {
129 printk("could not reserve port %lx for %s\n",
130 pcide_bases[i]+0x206,name);
131 release_region(pcide_bases[i], 8);
132 continue;
133 }
134 q40_ide_setup_ports(&hw,(unsigned long) pcide_bases[i], (int *)pcide_offsets,
135 pcide_bases[i]+0x206,
136 0, NULL,
137// m68kide_iops,
138 q40ide_default_irq(pcide_bases[i]));
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100139
140 hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
141 if (hwif) {
142 ide_init_port_data(hwif, hwif->index);
143 ide_init_port_hw(hwif, &hw);
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100144 hwif->mmio = 1;
Bartlomiej Zolnierkiewicz8ac4ce72008-01-26 20:13:06 +0100145
146 idx[i] = hwif->index;
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100147 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 }
Bartlomiej Zolnierkiewicz8ac4ce72008-01-26 20:13:06 +0100149
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100150 ide_device_add(idx, NULL);
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +0100151
152 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153}
154
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +0100155module_init(q40ide_init);