2 * H8/300 generic IDE interface
5 #include <linux/init.h>
14 __asm__("mov.b %w1,r1h\n\t" \
23 static void mm_outw(u16 d, unsigned long a)
25 __asm__("mov.b %w0,r2h\n\t"
33 static u16 mm_inw(unsigned long a)
35 register u16 r __asm__("er0");
36 __asm__("mov.w @%1,r2\n\t"
45 static void h8300_tf_load(ide_drive_t *drive, ide_task_t *task)
47 ide_hwif_t *hwif = drive->hwif;
48 struct ide_io_ports *io_ports = &hwif->io_ports;
49 struct ide_taskfile *tf = &task->tf;
50 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
52 if (task->tf_flags & IDE_TFLAG_FLAGGED)
55 if (task->tf_flags & IDE_TFLAG_OUT_DATA)
56 mm_outw((tf->hob_data << 8) | tf->data, io_ports->data_addr);
58 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
59 outb(tf->hob_feature, io_ports->feature_addr);
60 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
61 outb(tf->hob_nsect, io_ports->nsect_addr);
62 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
63 outb(tf->hob_lbal, io_ports->lbal_addr);
64 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
65 outb(tf->hob_lbam, io_ports->lbam_addr);
66 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
67 outb(tf->hob_lbah, io_ports->lbah_addr);
69 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
70 outb(tf->feature, io_ports->feature_addr);
71 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
72 outb(tf->nsect, io_ports->nsect_addr);
73 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
74 outb(tf->lbal, io_ports->lbal_addr);
75 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
76 outb(tf->lbam, io_ports->lbam_addr);
77 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
78 outb(tf->lbah, io_ports->lbah_addr);
80 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
81 outb((tf->device & HIHI) | drive->select.all,
82 io_ports->device_addr);
85 static void h8300_tf_read(ide_drive_t *drive, ide_task_t *task)
87 ide_hwif_t *hwif = drive->hwif;
88 struct ide_io_ports *io_ports = &hwif->io_ports;
89 struct ide_taskfile *tf = &task->tf;
91 if (task->tf_flags & IDE_TFLAG_IN_DATA) {
92 u16 data = mm_inw(io_ports->data_addr);
94 tf->data = data & 0xff;
95 tf->hob_data = (data >> 8) & 0xff;
98 /* be sure we're looking at the low order bits */
99 outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
101 if (task->tf_flags & IDE_TFLAG_IN_NSECT)
102 tf->nsect = inb(io_ports->nsect_addr);
103 if (task->tf_flags & IDE_TFLAG_IN_LBAL)
104 tf->lbal = inb(io_ports->lbal_addr);
105 if (task->tf_flags & IDE_TFLAG_IN_LBAM)
106 tf->lbam = inb(io_ports->lbam_addr);
107 if (task->tf_flags & IDE_TFLAG_IN_LBAH)
108 tf->lbah = inb(io_ports->lbah_addr);
109 if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
110 tf->device = inb(io_ports->device_addr);
112 if (task->tf_flags & IDE_TFLAG_LBA48) {
113 outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
115 if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
116 tf->hob_feature = inb(io_ports->feature_addr);
117 if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
118 tf->hob_nsect = inb(io_ports->nsect_addr);
119 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
120 tf->hob_lbal = inb(io_ports->lbal_addr);
121 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
122 tf->hob_lbam = inb(io_ports->lbam_addr);
123 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
124 tf->hob_lbah = inb(io_ports->lbah_addr);
128 static void mm_outsw(unsigned long addr, void *buf, u32 len)
130 unsigned short *bp = (unsigned short *)buf;
131 for (; len > 0; len--, bp++)
132 *(volatile u16 *)addr = bswap(*bp);
135 static void mm_insw(unsigned long addr, void *buf, u32 len)
137 unsigned short *bp = (unsigned short *)buf;
138 for (; len > 0; len--, bp++)
139 *bp = bswap(*(volatile u16 *)addr);
142 static void h8300_input_data(ide_drive_t *drive, struct request *rq,
143 void *buf, unsigned int len)
145 mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
148 static void h8300_output_data(ide_drive_t *drive, struct request *rq,
149 void *buf, unsigned int len)
151 mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
154 #define H8300_IDE_GAP (2)
156 static inline void hw_setup(hw_regs_t *hw)
160 memset(hw, 0, sizeof(hw_regs_t));
161 for (i = 0; i <= 7; i++)
162 hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
163 hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
164 hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
165 hw->chipset = ide_generic;
168 static inline void hwif_setup(ide_hwif_t *hwif)
170 default_hwif_iops(hwif);
172 hwif->tf_load = h8300_tf_load;
173 hwif->tf_read = h8300_tf_read;
175 hwif->input_data = h8300_input_data;
176 hwif->output_data = h8300_output_data;
179 static int __init h8300_ide_init(void)
184 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
186 if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
188 if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
189 release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
195 hwif = ide_find_port();
197 printk(KERN_ERR "ide-h8300: IDE I/F register failed\n");
202 ide_init_port_data(hwif, index);
203 ide_init_port_hw(hwif, &hw);
205 hwif->host_flags = IDE_HFLAG_NO_IO_32BIT;
206 printk(KERN_INFO "ide%d: H8/300 generic IDE interface\n", index);
210 ide_device_add(idx, NULL);
215 printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
220 module_init(h8300_ide_init);
222 MODULE_LICENSE("GPL");