iwlwifi: introduce host commands callbacks
[linux/fpc-iii.git] / drivers / ide / legacy / gayle.c
blobe3b4638cc88389e85ade16a074401a6b74d256e4
1 /*
2 * Amiga Gayle IDE Driver
4 * Created 9 Jul 1997 by Geert Uytterhoeven
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 */
11 #include <linux/types.h>
12 #include <linux/mm.h>
13 #include <linux/interrupt.h>
14 #include <linux/blkdev.h>
15 #include <linux/hdreg.h>
16 #include <linux/ide.h>
17 #include <linux/init.h>
18 #include <linux/zorro.h>
20 #include <asm/setup.h>
21 #include <asm/amigahw.h>
22 #include <asm/amigaints.h>
23 #include <asm/amigayle.h>
27 * Bases of the IDE interfaces
30 #define GAYLE_BASE_4000 0xdd2020 /* A4000/A4000T */
31 #define GAYLE_BASE_1200 0xda0000 /* A1200/A600 and E-Matrix 530 */
34 * Offsets from one of the above bases
37 #define GAYLE_CONTROL 0x101a
40 * These are at different offsets from the base
43 #define GAYLE_IRQ_4000 0xdd3020 /* MSB = 1, Harddisk is source of */
44 #define GAYLE_IRQ_1200 0xda9000 /* interrupt */
48 * Offset of the secondary port for IDE doublers
49 * Note that GAYLE_CONTROL is NOT available then!
52 #define GAYLE_NEXT_PORT 0x1000
54 #ifndef CONFIG_BLK_DEV_IDEDOUBLER
55 #define GAYLE_NUM_HWIFS 1
56 #define GAYLE_NUM_PROBE_HWIFS GAYLE_NUM_HWIFS
57 #define GAYLE_HAS_CONTROL_REG 1
58 #define GAYLE_IDEREG_SIZE 0x2000
59 #else /* CONFIG_BLK_DEV_IDEDOUBLER */
60 #define GAYLE_NUM_HWIFS 2
61 #define GAYLE_NUM_PROBE_HWIFS (ide_doubler ? GAYLE_NUM_HWIFS : \
62 GAYLE_NUM_HWIFS-1)
63 #define GAYLE_HAS_CONTROL_REG (!ide_doubler)
64 #define GAYLE_IDEREG_SIZE (ide_doubler ? 0x1000 : 0x2000)
65 int ide_doubler = 0; /* support IDE doublers? */
66 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
70 * Check and acknowledge the interrupt status
73 static int gayle_ack_intr_a4000(ide_hwif_t *hwif)
75 unsigned char ch;
77 ch = z_readb(hwif->io_ports[IDE_IRQ_OFFSET]);
78 if (!(ch & GAYLE_IRQ_IDE))
79 return 0;
80 return 1;
83 static int gayle_ack_intr_a1200(ide_hwif_t *hwif)
85 unsigned char ch;
87 ch = z_readb(hwif->io_ports[IDE_IRQ_OFFSET]);
88 if (!(ch & GAYLE_IRQ_IDE))
89 return 0;
90 (void)z_readb(hwif->io_ports[IDE_STATUS_OFFSET]);
91 z_writeb(0x7c, hwif->io_ports[IDE_IRQ_OFFSET]);
92 return 1;
95 static void __init gayle_setup_ports(hw_regs_t *hw, unsigned long base,
96 unsigned long ctl, unsigned long irq_port,
97 ide_ack_intr_t *ack_intr)
99 int i;
101 memset(hw, 0, sizeof(*hw));
103 hw->io_ports[IDE_DATA_OFFSET] = base;
105 for (i = 1; i < 8; i++)
106 hw->io_ports[i] = base + 2 + i * 4;
108 hw->io_ports[IDE_CONTROL_OFFSET] = ctl;
109 hw->io_ports[IDE_IRQ_OFFSET] = irq_port;
111 hw->irq = IRQ_AMIGA_PORTS;
112 hw->ack_intr = ack_intr;
116 * Probe for a Gayle IDE interface (and optionally for an IDE doubler)
119 static int __init gayle_init(void)
121 int a4000, i;
122 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
124 if (!MACH_IS_AMIGA)
125 return -ENODEV;
127 if ((a4000 = AMIGAHW_PRESENT(A4000_IDE)) || AMIGAHW_PRESENT(A1200_IDE))
128 goto found;
130 #ifdef CONFIG_ZORRO
131 if (zorro_find_device(ZORRO_PROD_MTEC_VIPER_MK_V_E_MATRIX_530_SCSI_IDE,
132 NULL))
133 goto found;
134 #endif
135 return -ENODEV;
137 found:
138 printk(KERN_INFO "ide: Gayle IDE controller (A%d style%s)\n",
139 a4000 ? 4000 : 1200,
140 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
141 ide_doubler ? ", IDE doubler" :
142 #endif
143 "");
145 for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) {
146 unsigned long base, ctrlport, irqport;
147 ide_ack_intr_t *ack_intr;
148 hw_regs_t hw;
149 ide_hwif_t *hwif;
150 unsigned long phys_base, res_start, res_n;
152 if (a4000) {
153 phys_base = GAYLE_BASE_4000;
154 irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_4000);
155 ack_intr = gayle_ack_intr_a4000;
156 } else {
157 phys_base = GAYLE_BASE_1200;
158 irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_1200);
159 ack_intr = gayle_ack_intr_a1200;
162 * FIXME: we now have selectable modes between mmio v/s iomio
165 phys_base += i*GAYLE_NEXT_PORT;
167 res_start = ((unsigned long)phys_base) & ~(GAYLE_NEXT_PORT-1);
168 res_n = GAYLE_IDEREG_SIZE;
170 if (!request_mem_region(res_start, res_n, "IDE"))
171 continue;
173 base = (unsigned long)ZTWO_VADDR(phys_base);
174 ctrlport = GAYLE_HAS_CONTROL_REG ? (base + GAYLE_CONTROL) : 0;
176 gayle_setup_ports(&hw, base, ctrlport, irqport, ack_intr);
178 hwif = ide_find_port(base);
179 if (hwif) {
180 u8 index = hwif->index;
182 ide_init_port_data(hwif, index);
183 ide_init_port_hw(hwif, &hw);
185 hwif->mmio = 1;
187 idx[i] = index;
188 } else
189 release_mem_region(res_start, res_n);
192 ide_device_add(idx, NULL);
194 return 0;
197 module_init(gayle_init);
199 MODULE_LICENSE("GPL");