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1/*
2 * Amiga Buddha, Catweasel and X-Surf IDE Driver
3 *
4 * Copyright (C) 1997, 2001 by Geert Uytterhoeven and others
5 *
6 * This driver was written based on the specifications in README.buddha and
7 * the X-Surf info from Inside_XSurf.txt available at
8 * http://www.jschoenfeld.com
9 *
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of this archive for
12 * more details.
13 *
14 * TODO:
15 * - test it :-)
16 * - tune the timings using the speed-register
17 */
18
19#include <linux/types.h>
20#include <linux/mm.h>
21#include <linux/interrupt.h>
22#include <linux/blkdev.h>
23#include <linux/zorro.h>
24#include <linux/ide.h>
25#include <linux/init.h>
26
27#include <asm/amigahw.h>
28#include <asm/amigaints.h>
29
30
31 /*
32 * The Buddha has 2 IDE interfaces, the Catweasel has 3, X-Surf has 2
33 */
34
35#define BUDDHA_NUM_HWIFS 2
36#define CATWEASEL_NUM_HWIFS 3
37#define XSURF_NUM_HWIFS 2
38
39#define MAX_NUM_HWIFS 3
40
41 /*
42 * Bases of the IDE interfaces (relative to the board address)
43 */
44
45#define BUDDHA_BASE1 0x800
46#define BUDDHA_BASE2 0xa00
47#define BUDDHA_BASE3 0xc00
48
49#define XSURF_BASE1 0xb000 /* 2.5" Interface */
50#define XSURF_BASE2 0xd000 /* 3.5" Interface */
51
52static u_int buddha_bases[CATWEASEL_NUM_HWIFS] __initdata = {
53 BUDDHA_BASE1, BUDDHA_BASE2, BUDDHA_BASE3
54};
55
56static u_int xsurf_bases[XSURF_NUM_HWIFS] __initdata = {
57 XSURF_BASE1, XSURF_BASE2
58};
59
60 /*
61 * Offsets from one of the above bases
62 */
63
64#define BUDDHA_CONTROL 0x11a
65
66 /*
67 * Other registers
68 */
69
70#define BUDDHA_IRQ1 0xf00 /* MSB = 1, Harddisk is source of */
71#define BUDDHA_IRQ2 0xf40 /* interrupt */
72#define BUDDHA_IRQ3 0xf80
73
74#define XSURF_IRQ1 0x7e
75#define XSURF_IRQ2 0x7e
76
77static int buddha_irqports[CATWEASEL_NUM_HWIFS] __initdata = {
78 BUDDHA_IRQ1, BUDDHA_IRQ2, BUDDHA_IRQ3
79};
80
81static int xsurf_irqports[XSURF_NUM_HWIFS] __initdata = {
82 XSURF_IRQ1, XSURF_IRQ2
83};
84
85#define BUDDHA_IRQ_MR 0xfc0 /* master interrupt enable */
86
87
88 /*
89 * Board information
90 */
91
92typedef enum BuddhaType_Enum {
93 BOARD_BUDDHA, BOARD_CATWEASEL, BOARD_XSURF
94} BuddhaType;
95
96static const char *buddha_board_name[] = { "Buddha", "Catweasel", "X-Surf" };
97
98 /*
99 * Check and acknowledge the interrupt status
100 */
101
102static int buddha_test_irq(ide_hwif_t *hwif)
103{
104 unsigned char ch;
105
106 ch = z_readb(hwif->io_ports.irq_addr);
107 if (!(ch & 0x80))
108 return 0;
109 return 1;
110}
111
112static void xsurf_clear_irq(ide_drive_t *drive)
113{
114 /*
115 * X-Surf needs 0 written to IRQ register to ensure ISA bit A11 stays at 0
116 */
117 z_writeb(0, drive->hwif->io_ports.irq_addr);
118}
119
120static void __init buddha_setup_ports(struct ide_hw *hw, unsigned long base,
121 unsigned long ctl, unsigned long irq_port)
122{
123 int i;
124
125 memset(hw, 0, sizeof(*hw));
126
127 hw->io_ports.data_addr = base;
128
129 for (i = 1; i < 8; i++)
130 hw->io_ports_array[i] = base + 2 + i * 4;
131
132 hw->io_ports.ctl_addr = ctl;
133 hw->io_ports.irq_addr = irq_port;
134
135 hw->irq = IRQ_AMIGA_PORTS;
136}
137
138static const struct ide_port_ops buddha_port_ops = {
139 .test_irq = buddha_test_irq,
140};
141
142static const struct ide_port_ops xsurf_port_ops = {
143 .clear_irq = xsurf_clear_irq,
144 .test_irq = buddha_test_irq,
145};
146
147static const struct ide_port_info buddha_port_info = {
148 .port_ops = &buddha_port_ops,
149 .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
150 .irq_flags = IRQF_SHARED,
151 .chipset = ide_generic,
152};
153
154 /*
155 * Probe for a Buddha or Catweasel IDE interface
156 */
157
158static int __init buddha_init(void)
159{
160 struct zorro_dev *z = NULL;
161 u_long buddha_board = 0;
162 BuddhaType type;
163 int buddha_num_hwifs, i;
164
165 while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
166 unsigned long board;
167 struct ide_hw hw[MAX_NUM_HWIFS], *hws[MAX_NUM_HWIFS];
168 struct ide_port_info d = buddha_port_info;
169
170 if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) {
171 buddha_num_hwifs = BUDDHA_NUM_HWIFS;
172 type=BOARD_BUDDHA;
173 } else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_CATWEASEL) {
174 buddha_num_hwifs = CATWEASEL_NUM_HWIFS;
175 type=BOARD_CATWEASEL;
176 } else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF) {
177 buddha_num_hwifs = XSURF_NUM_HWIFS;
178 type=BOARD_XSURF;
179 d.port_ops = &xsurf_port_ops;
180 } else
181 continue;
182
183 board = z->resource.start;
184
185 if(type != BOARD_XSURF) {
186 if (!request_mem_region(board+BUDDHA_BASE1, 0x800, "IDE"))
187 continue;
188 } else {
189 if (!request_mem_region(board+XSURF_BASE1, 0x1000, "IDE"))
190 continue;
191 if (!request_mem_region(board+XSURF_BASE2, 0x1000, "IDE"))
192 goto fail_base2;
193 if (!request_mem_region(board+XSURF_IRQ1, 0x8, "IDE")) {
194 release_mem_region(board+XSURF_BASE2, 0x1000);
195fail_base2:
196 release_mem_region(board+XSURF_BASE1, 0x1000);
197 continue;
198 }
199 }
200 buddha_board = ZTWO_VADDR(board);
201
202 /* write to BUDDHA_IRQ_MR to enable the board IRQ */
203 /* X-Surf doesn't have this. IRQs are always on */
204 if (type != BOARD_XSURF)
205 z_writeb(0, buddha_board+BUDDHA_IRQ_MR);
206
207 printk(KERN_INFO "ide: %s IDE controller\n",
208 buddha_board_name[type]);
209
210 for (i = 0; i < buddha_num_hwifs; i++) {
211 unsigned long base, ctl, irq_port;
212
213 if (type != BOARD_XSURF) {
214 base = buddha_board + buddha_bases[i];
215 ctl = base + BUDDHA_CONTROL;
216 irq_port = buddha_board + buddha_irqports[i];
217 } else {
218 base = buddha_board + xsurf_bases[i];
219 /* X-Surf has no CS1* (Control/AltStat) */
220 ctl = 0;
221 irq_port = buddha_board + xsurf_irqports[i];
222 }
223
224 buddha_setup_ports(&hw[i], base, ctl, irq_port);
225
226 hws[i] = &hw[i];
227 }
228
229 ide_host_add(&d, hws, i, NULL);
230 }
231
232 return 0;
233}
234
235module_init(buddha_init);
236
237MODULE_LICENSE("GPL");
1/*
2 * Amiga Buddha, Catweasel and X-Surf IDE Driver
3 *
4 * Copyright (C) 1997, 2001 by Geert Uytterhoeven and others
5 *
6 * This driver was written based on the specifications in README.buddha and
7 * the X-Surf info from Inside_XSurf.txt available at
8 * http://www.jschoenfeld.com
9 *
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of this archive for
12 * more details.
13 *
14 * TODO:
15 * - test it :-)
16 * - tune the timings using the speed-register
17 */
18
19#include <linux/types.h>
20#include <linux/mm.h>
21#include <linux/interrupt.h>
22#include <linux/blkdev.h>
23#include <linux/zorro.h>
24#include <linux/ide.h>
25#include <linux/init.h>
26#include <linux/module.h>
27
28#include <asm/amigahw.h>
29#include <asm/amigaints.h>
30
31
32 /*
33 * The Buddha has 2 IDE interfaces, the Catweasel has 3, X-Surf has 2
34 */
35
36#define BUDDHA_NUM_HWIFS 2
37#define CATWEASEL_NUM_HWIFS 3
38#define XSURF_NUM_HWIFS 2
39
40#define MAX_NUM_HWIFS 3
41
42 /*
43 * Bases of the IDE interfaces (relative to the board address)
44 */
45
46#define BUDDHA_BASE1 0x800
47#define BUDDHA_BASE2 0xa00
48#define BUDDHA_BASE3 0xc00
49
50#define XSURF_BASE1 0xb000 /* 2.5" Interface */
51#define XSURF_BASE2 0xd000 /* 3.5" Interface */
52
53static u_int buddha_bases[CATWEASEL_NUM_HWIFS] __initdata = {
54 BUDDHA_BASE1, BUDDHA_BASE2, BUDDHA_BASE3
55};
56
57static u_int xsurf_bases[XSURF_NUM_HWIFS] __initdata = {
58 XSURF_BASE1, XSURF_BASE2
59};
60
61 /*
62 * Offsets from one of the above bases
63 */
64
65#define BUDDHA_CONTROL 0x11a
66
67 /*
68 * Other registers
69 */
70
71#define BUDDHA_IRQ1 0xf00 /* MSB = 1, Harddisk is source of */
72#define BUDDHA_IRQ2 0xf40 /* interrupt */
73#define BUDDHA_IRQ3 0xf80
74
75#define XSURF_IRQ1 0x7e
76#define XSURF_IRQ2 0x7e
77
78static int buddha_irqports[CATWEASEL_NUM_HWIFS] __initdata = {
79 BUDDHA_IRQ1, BUDDHA_IRQ2, BUDDHA_IRQ3
80};
81
82static int xsurf_irqports[XSURF_NUM_HWIFS] __initdata = {
83 XSURF_IRQ1, XSURF_IRQ2
84};
85
86#define BUDDHA_IRQ_MR 0xfc0 /* master interrupt enable */
87
88
89 /*
90 * Board information
91 */
92
93typedef enum BuddhaType_Enum {
94 BOARD_BUDDHA, BOARD_CATWEASEL, BOARD_XSURF
95} BuddhaType;
96
97static const char *buddha_board_name[] = { "Buddha", "Catweasel", "X-Surf" };
98
99 /*
100 * Check and acknowledge the interrupt status
101 */
102
103static int buddha_test_irq(ide_hwif_t *hwif)
104{
105 unsigned char ch;
106
107 ch = z_readb(hwif->io_ports.irq_addr);
108 if (!(ch & 0x80))
109 return 0;
110 return 1;
111}
112
113static void xsurf_clear_irq(ide_drive_t *drive)
114{
115 /*
116 * X-Surf needs 0 written to IRQ register to ensure ISA bit A11 stays at 0
117 */
118 z_writeb(0, drive->hwif->io_ports.irq_addr);
119}
120
121static void __init buddha_setup_ports(struct ide_hw *hw, unsigned long base,
122 unsigned long ctl, unsigned long irq_port)
123{
124 int i;
125
126 memset(hw, 0, sizeof(*hw));
127
128 hw->io_ports.data_addr = base;
129
130 for (i = 1; i < 8; i++)
131 hw->io_ports_array[i] = base + 2 + i * 4;
132
133 hw->io_ports.ctl_addr = ctl;
134 hw->io_ports.irq_addr = irq_port;
135
136 hw->irq = IRQ_AMIGA_PORTS;
137}
138
139static const struct ide_port_ops buddha_port_ops = {
140 .test_irq = buddha_test_irq,
141};
142
143static const struct ide_port_ops xsurf_port_ops = {
144 .clear_irq = xsurf_clear_irq,
145 .test_irq = buddha_test_irq,
146};
147
148static const struct ide_port_info buddha_port_info = {
149 .port_ops = &buddha_port_ops,
150 .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
151 .irq_flags = IRQF_SHARED,
152 .chipset = ide_generic,
153};
154
155 /*
156 * Probe for a Buddha or Catweasel IDE interface
157 */
158
159static int __init buddha_init(void)
160{
161 struct zorro_dev *z = NULL;
162 u_long buddha_board = 0;
163 BuddhaType type;
164 int buddha_num_hwifs, i;
165
166 while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
167 unsigned long board;
168 struct ide_hw hw[MAX_NUM_HWIFS], *hws[MAX_NUM_HWIFS];
169 struct ide_port_info d = buddha_port_info;
170
171 if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) {
172 buddha_num_hwifs = BUDDHA_NUM_HWIFS;
173 type=BOARD_BUDDHA;
174 } else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_CATWEASEL) {
175 buddha_num_hwifs = CATWEASEL_NUM_HWIFS;
176 type=BOARD_CATWEASEL;
177 } else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF) {
178 buddha_num_hwifs = XSURF_NUM_HWIFS;
179 type=BOARD_XSURF;
180 d.port_ops = &xsurf_port_ops;
181 } else
182 continue;
183
184 board = z->resource.start;
185
186 if(type != BOARD_XSURF) {
187 if (!request_mem_region(board+BUDDHA_BASE1, 0x800, "IDE"))
188 continue;
189 } else {
190 if (!request_mem_region(board+XSURF_BASE1, 0x1000, "IDE"))
191 continue;
192 if (!request_mem_region(board+XSURF_BASE2, 0x1000, "IDE"))
193 goto fail_base2;
194 if (!request_mem_region(board+XSURF_IRQ1, 0x8, "IDE")) {
195 release_mem_region(board+XSURF_BASE2, 0x1000);
196fail_base2:
197 release_mem_region(board+XSURF_BASE1, 0x1000);
198 continue;
199 }
200 }
201 buddha_board = (unsigned long)ZTWO_VADDR(board);
202
203 /* write to BUDDHA_IRQ_MR to enable the board IRQ */
204 /* X-Surf doesn't have this. IRQs are always on */
205 if (type != BOARD_XSURF)
206 z_writeb(0, buddha_board+BUDDHA_IRQ_MR);
207
208 printk(KERN_INFO "ide: %s IDE controller\n",
209 buddha_board_name[type]);
210
211 for (i = 0; i < buddha_num_hwifs; i++) {
212 unsigned long base, ctl, irq_port;
213
214 if (type != BOARD_XSURF) {
215 base = buddha_board + buddha_bases[i];
216 ctl = base + BUDDHA_CONTROL;
217 irq_port = buddha_board + buddha_irqports[i];
218 } else {
219 base = buddha_board + xsurf_bases[i];
220 /* X-Surf has no CS1* (Control/AltStat) */
221 ctl = 0;
222 irq_port = buddha_board + xsurf_irqports[i];
223 }
224
225 buddha_setup_ports(&hw[i], base, ctl, irq_port);
226
227 hws[i] = &hw[i];
228 }
229
230 ide_host_add(&d, hws, i, NULL);
231 }
232
233 return 0;
234}
235
236module_init(buddha_init);
237
238MODULE_LICENSE("GPL");