ide: remove useless subdirs from drivers/ide/
[linux-2.6.git] / drivers / ide / ide-h8300.c
1 /*
2  * H8/300 generic IDE interface
3  */
4
5 #include <linux/init.h>
6 #include <linux/ide.h>
7
8 #include <asm/io.h>
9 #include <asm/irq.h>
10
11 #define DRV_NAME "ide-h8300"
12
13 #define bswap(d) \
14 ({                                      \
15         u16 r;                          \
16         __asm__("mov.b %w1,r1h\n\t"     \
17                 "mov.b %x1,r1l\n\t"     \
18                 "mov.w r1,%0"           \
19                 :"=r"(r)                \
20                 :"r"(d)                 \
21                 :"er1");                \
22         (r);                            \
23 })
24
25 static void mm_outw(u16 d, unsigned long a)
26 {
27         __asm__("mov.b %w0,r2h\n\t"
28                 "mov.b %x0,r2l\n\t"
29                 "mov.w r2,@%1"
30                 :
31                 :"r"(d),"r"(a)
32                 :"er2");
33 }
34
35 static u16 mm_inw(unsigned long a)
36 {
37         register u16 r __asm__("er0");
38         __asm__("mov.w @%1,r2\n\t"
39                 "mov.b r2l,%x0\n\t"
40                 "mov.b r2h,%w0"
41                 :"=r"(r)
42                 :"r"(a)
43                 :"er2");
44         return r;
45 }
46
47 static void h8300_tf_load(ide_drive_t *drive, ide_task_t *task)
48 {
49         ide_hwif_t *hwif = drive->hwif;
50         struct ide_io_ports *io_ports = &hwif->io_ports;
51         struct ide_taskfile *tf = &task->tf;
52         u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
53
54         if (task->tf_flags & IDE_TFLAG_FLAGGED)
55                 HIHI = 0xFF;
56
57         if (task->tf_flags & IDE_TFLAG_OUT_DATA)
58                 mm_outw((tf->hob_data << 8) | tf->data, io_ports->data_addr);
59
60         if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
61                 outb(tf->hob_feature, io_ports->feature_addr);
62         if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
63                 outb(tf->hob_nsect, io_ports->nsect_addr);
64         if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
65                 outb(tf->hob_lbal, io_ports->lbal_addr);
66         if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
67                 outb(tf->hob_lbam, io_ports->lbam_addr);
68         if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
69                 outb(tf->hob_lbah, io_ports->lbah_addr);
70
71         if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
72                 outb(tf->feature, io_ports->feature_addr);
73         if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
74                 outb(tf->nsect, io_ports->nsect_addr);
75         if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
76                 outb(tf->lbal, io_ports->lbal_addr);
77         if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
78                 outb(tf->lbam, io_ports->lbam_addr);
79         if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
80                 outb(tf->lbah, io_ports->lbah_addr);
81
82         if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
83                 outb((tf->device & HIHI) | drive->select,
84                      io_ports->device_addr);
85 }
86
87 static void h8300_tf_read(ide_drive_t *drive, ide_task_t *task)
88 {
89         ide_hwif_t *hwif = drive->hwif;
90         struct ide_io_ports *io_ports = &hwif->io_ports;
91         struct ide_taskfile *tf = &task->tf;
92
93         if (task->tf_flags & IDE_TFLAG_IN_DATA) {
94                 u16 data = mm_inw(io_ports->data_addr);
95
96                 tf->data = data & 0xff;
97                 tf->hob_data = (data >> 8) & 0xff;
98         }
99
100         /* be sure we're looking at the low order bits */
101         outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
102
103         if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
104                 tf->feature = inb(io_ports->feature_addr);
105         if (task->tf_flags & IDE_TFLAG_IN_NSECT)
106                 tf->nsect  = inb(io_ports->nsect_addr);
107         if (task->tf_flags & IDE_TFLAG_IN_LBAL)
108                 tf->lbal   = inb(io_ports->lbal_addr);
109         if (task->tf_flags & IDE_TFLAG_IN_LBAM)
110                 tf->lbam   = inb(io_ports->lbam_addr);
111         if (task->tf_flags & IDE_TFLAG_IN_LBAH)
112                 tf->lbah   = inb(io_ports->lbah_addr);
113         if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
114                 tf->device = inb(io_ports->device_addr);
115
116         if (task->tf_flags & IDE_TFLAG_LBA48) {
117                 outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
118
119                 if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
120                         tf->hob_feature = inb(io_ports->feature_addr);
121                 if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
122                         tf->hob_nsect   = inb(io_ports->nsect_addr);
123                 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
124                         tf->hob_lbal    = inb(io_ports->lbal_addr);
125                 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
126                         tf->hob_lbam    = inb(io_ports->lbam_addr);
127                 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
128                         tf->hob_lbah    = inb(io_ports->lbah_addr);
129         }
130 }
131
132 static void mm_outsw(unsigned long addr, void *buf, u32 len)
133 {
134         unsigned short *bp = (unsigned short *)buf;
135         for (; len > 0; len--, bp++)
136                 *(volatile u16 *)addr = bswap(*bp);
137 }
138
139 static void mm_insw(unsigned long addr, void *buf, u32 len)
140 {
141         unsigned short *bp = (unsigned short *)buf;
142         for (; len > 0; len--, bp++)
143                 *bp = bswap(*(volatile u16 *)addr);
144 }
145
146 static void h8300_input_data(ide_drive_t *drive, struct request *rq,
147                              void *buf, unsigned int len)
148 {
149         mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
150 }
151
152 static void h8300_output_data(ide_drive_t *drive, struct request *rq,
153                               void *buf, unsigned int len)
154 {
155         mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
156 }
157
158 static const struct ide_tp_ops h8300_tp_ops = {
159         .exec_command           = ide_exec_command,
160         .read_status            = ide_read_status,
161         .read_altstatus         = ide_read_altstatus,
162         .read_sff_dma_status    = ide_read_sff_dma_status,
163
164         .set_irq                = ide_set_irq,
165
166         .tf_load                = h8300_tf_load,
167         .tf_read                = h8300_tf_read,
168
169         .input_data             = h8300_input_data,
170         .output_data            = h8300_output_data,
171 };
172
173 #define H8300_IDE_GAP (2)
174
175 static inline void hw_setup(hw_regs_t *hw)
176 {
177         int i;
178
179         memset(hw, 0, sizeof(hw_regs_t));
180         for (i = 0; i <= 7; i++)
181                 hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
182         hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
183         hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
184         hw->chipset = ide_generic;
185 }
186
187 static const struct ide_port_info h8300_port_info = {
188         .tp_ops                 = &h8300_tp_ops,
189         .host_flags             = IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_NO_DMA,
190 };
191
192 static int __init h8300_ide_init(void)
193 {
194         hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
195
196         printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
197
198         if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
199                 goto out_busy;
200         if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
201                 release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
202                 goto out_busy;
203         }
204
205         hw_setup(&hw);
206
207         return ide_host_add(&h8300_port_info, hws, NULL);
208
209 out_busy:
210         printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
211
212         return -EBUSY;
213 }
214
215 module_init(h8300_ide_init);
216
217 MODULE_LICENSE("GPL");