2 * Q40 I/O port IDE Driver
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
13 #include <linux/types.h>
15 #include <linux/interrupt.h>
16 #include <linux/blkdev.h>
17 #include <linux/hdreg.h>
19 #include <linux/ide.h>
22 * Bases of the IDE interfaces
25 #define Q40IDE_NUM_HWIFS 2
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
34 static const unsigned long pcide_bases[Q40IDE_NUM_HWIFS] = {
35 PCIDE_BASE1, PCIDE_BASE2, /* PCIDE_BASE3, PCIDE_BASE4 , PCIDE_BASE5,
39 static int q40ide_default_irq(unsigned long base)
42 case 0x1f0: return 14;
43 case 0x170: return 15;
44 case 0x1e8: return 11;
52 * Addresses are pretranslated for Q40 ISA access.
54 static void q40_ide_setup_ports(hw_regs_t *hw, unsigned long base,
55 ide_ack_intr_t *ack_intr,
58 memset(hw, 0, sizeof(hw_regs_t));
60 assumption: only DATA port is ever used in 16 bit mode */
61 hw->io_ports.data_addr = Q40_ISA_IO_W(base);
62 hw->io_ports.error_addr = Q40_ISA_IO_B(base + 1);
63 hw->io_ports.nsect_addr = Q40_ISA_IO_B(base + 2);
64 hw->io_ports.lbal_addr = Q40_ISA_IO_B(base + 3);
65 hw->io_ports.lbam_addr = Q40_ISA_IO_B(base + 4);
66 hw->io_ports.lbah_addr = Q40_ISA_IO_B(base + 5);
67 hw->io_ports.device_addr = Q40_ISA_IO_B(base + 6);
68 hw->io_ports.status_addr = Q40_ISA_IO_B(base + 7);
69 hw->io_ports.ctl_addr = Q40_ISA_IO_B(base + 0x206);
72 hw->ack_intr = ack_intr;
75 static void q40ide_input_data(ide_drive_t *drive, struct request *rq,
76 void *buf, unsigned int len)
78 unsigned long data_addr = drive->hwif->io_ports.data_addr;
80 if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS)
81 return insw(data_addr, buf, (len + 1) / 2);
83 insw_swapw(data_addr, buf, (len + 1) / 2);
86 static void q40ide_output_data(ide_drive_t *drive, struct request *rq,
87 void *buf, unsigned int len)
89 unsigned long data_addr = drive->hwif->io_ports.data_addr;
91 if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS)
92 return outsw(data_addr, buf, (len + 1) / 2);
94 outsw_swapw(data_addr, buf, (len + 1) / 2);
98 * the static array is needed to have the name reported in /proc/ioports,
99 * hwif->name unfortunately isn't available yet
101 static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={
106 * Probe for Q40 IDE interfaces
109 static int __init q40ide_init(void)
114 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
119 printk(KERN_INFO "ide: Q40 IDE controller\n");
121 for (i = 0; i < Q40IDE_NUM_HWIFS; i++) {
124 name = q40_ide_names[i];
125 if (!request_region(pcide_bases[i], 8, name)) {
126 printk("could not reserve ports %lx-%lx for %s\n",
127 pcide_bases[i],pcide_bases[i]+8,name);
130 if (!request_region(pcide_bases[i]+0x206, 1, name)) {
131 printk("could not reserve port %lx for %s\n",
132 pcide_bases[i]+0x206,name);
133 release_region(pcide_bases[i], 8);
136 q40_ide_setup_ports(&hw, pcide_bases[i],
139 q40ide_default_irq(pcide_bases[i]));
141 hwif = ide_find_port();
143 ide_init_port_data(hwif, hwif->index);
144 ide_init_port_hw(hwif, &hw);
146 /* Q40 has a byte-swapped IDE interface */
147 hwif->input_data = q40ide_input_data;
148 hwif->output_data = q40ide_output_data;
150 idx[i] = hwif->index;
154 ide_device_add(idx, NULL);
159 module_init(q40ide_init);
161 MODULE_LICENSE("GPL");