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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * H8/300 generic IDE interface |
3 | */ | |
4 | ||
5 | #include <linux/init.h> | |
6 | #include <linux/ide.h> | |
1da177e4 LT |
7 | |
8 | #include <asm/io.h> | |
9 | #include <asm/irq.h> | |
10 | ||
eb3aff55 BZ |
11 | #define DRV_NAME "ide-h8300" |
12 | ||
1da177e4 LT |
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 | ||
22aa4b32 | 47 | static void h8300_tf_load(ide_drive_t *drive, struct ide_cmd *cmd) |
92fcaaa8 BZ |
48 | { |
49 | ide_hwif_t *hwif = drive->hwif; | |
50 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
22aa4b32 BZ |
51 | struct ide_taskfile *tf = &cmd->tf; |
52 | u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; | |
92fcaaa8 | 53 | |
22aa4b32 | 54 | if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED) |
92fcaaa8 BZ |
55 | HIHI = 0xFF; |
56 | ||
22aa4b32 | 57 | if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) |
92fcaaa8 BZ |
58 | mm_outw((tf->hob_data << 8) | tf->data, io_ports->data_addr); |
59 | ||
22aa4b32 | 60 | if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) |
92fcaaa8 | 61 | outb(tf->hob_feature, io_ports->feature_addr); |
22aa4b32 | 62 | if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) |
92fcaaa8 | 63 | outb(tf->hob_nsect, io_ports->nsect_addr); |
22aa4b32 | 64 | if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) |
92fcaaa8 | 65 | outb(tf->hob_lbal, io_ports->lbal_addr); |
22aa4b32 | 66 | if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) |
92fcaaa8 | 67 | outb(tf->hob_lbam, io_ports->lbam_addr); |
22aa4b32 | 68 | if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) |
92fcaaa8 BZ |
69 | outb(tf->hob_lbah, io_ports->lbah_addr); |
70 | ||
22aa4b32 | 71 | if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE) |
92fcaaa8 | 72 | outb(tf->feature, io_ports->feature_addr); |
22aa4b32 | 73 | if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT) |
92fcaaa8 | 74 | outb(tf->nsect, io_ports->nsect_addr); |
22aa4b32 | 75 | if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL) |
92fcaaa8 | 76 | outb(tf->lbal, io_ports->lbal_addr); |
22aa4b32 | 77 | if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM) |
92fcaaa8 | 78 | outb(tf->lbam, io_ports->lbam_addr); |
22aa4b32 | 79 | if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH) |
92fcaaa8 BZ |
80 | outb(tf->lbah, io_ports->lbah_addr); |
81 | ||
22aa4b32 | 82 | if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE) |
7f612f27 | 83 | outb((tf->device & HIHI) | drive->select, |
92fcaaa8 BZ |
84 | io_ports->device_addr); |
85 | } | |
86 | ||
22aa4b32 | 87 | static void h8300_tf_read(ide_drive_t *drive, struct ide_cmd *cmd) |
92fcaaa8 BZ |
88 | { |
89 | ide_hwif_t *hwif = drive->hwif; | |
90 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
22aa4b32 | 91 | struct ide_taskfile *tf = &cmd->tf; |
92fcaaa8 | 92 | |
22aa4b32 | 93 | if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) { |
92fcaaa8 BZ |
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 */ | |
4d74c3fc | 101 | outb(ATA_DEVCTL_OBS, io_ports->ctl_addr); |
92fcaaa8 | 102 | |
22aa4b32 | 103 | if (cmd->tf_flags & IDE_TFLAG_IN_FEATURE) |
92eb4380 | 104 | tf->feature = inb(io_ports->feature_addr); |
22aa4b32 | 105 | if (cmd->tf_flags & IDE_TFLAG_IN_NSECT) |
92fcaaa8 | 106 | tf->nsect = inb(io_ports->nsect_addr); |
22aa4b32 | 107 | if (cmd->tf_flags & IDE_TFLAG_IN_LBAL) |
92fcaaa8 | 108 | tf->lbal = inb(io_ports->lbal_addr); |
22aa4b32 | 109 | if (cmd->tf_flags & IDE_TFLAG_IN_LBAM) |
92fcaaa8 | 110 | tf->lbam = inb(io_ports->lbam_addr); |
22aa4b32 | 111 | if (cmd->tf_flags & IDE_TFLAG_IN_LBAH) |
92fcaaa8 | 112 | tf->lbah = inb(io_ports->lbah_addr); |
22aa4b32 | 113 | if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE) |
92fcaaa8 BZ |
114 | tf->device = inb(io_ports->device_addr); |
115 | ||
22aa4b32 | 116 | if (cmd->tf_flags & IDE_TFLAG_LBA48) { |
4d74c3fc | 117 | outb(ATA_HOB | ATA_DEVCTL_OBS, io_ports->ctl_addr); |
92fcaaa8 | 118 | |
22aa4b32 | 119 | if (cmd->tf_flags & IDE_TFLAG_IN_HOB_FEATURE) |
92fcaaa8 | 120 | tf->hob_feature = inb(io_ports->feature_addr); |
22aa4b32 | 121 | if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT) |
92fcaaa8 | 122 | tf->hob_nsect = inb(io_ports->nsect_addr); |
22aa4b32 | 123 | if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL) |
92fcaaa8 | 124 | tf->hob_lbal = inb(io_ports->lbal_addr); |
22aa4b32 | 125 | if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM) |
92fcaaa8 | 126 | tf->hob_lbam = inb(io_ports->lbam_addr); |
22aa4b32 | 127 | if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH) |
92fcaaa8 BZ |
128 | tf->hob_lbah = inb(io_ports->lbah_addr); |
129 | } | |
130 | } | |
131 | ||
1da177e4 LT |
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 | ||
adb1af98 | 146 | static void h8300_input_data(ide_drive_t *drive, struct ide_cmd *cmd, |
f04ff9cb BZ |
147 | void *buf, unsigned int len) |
148 | { | |
149 | mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); | |
150 | } | |
151 | ||
adb1af98 | 152 | static void h8300_output_data(ide_drive_t *drive, struct ide_cmd *cmd, |
f04ff9cb BZ |
153 | void *buf, unsigned int len) |
154 | { | |
155 | mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); | |
156 | } | |
157 | ||
374e042c BZ |
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, | |
374e042c BZ |
162 | |
163 | .set_irq = ide_set_irq, | |
164 | ||
165 | .tf_load = h8300_tf_load, | |
166 | .tf_read = h8300_tf_read, | |
167 | ||
168 | .input_data = h8300_input_data, | |
169 | .output_data = h8300_output_data, | |
170 | }; | |
171 | ||
1da177e4 LT |
172 | #define H8300_IDE_GAP (2) |
173 | ||
174 | static inline void hw_setup(hw_regs_t *hw) | |
175 | { | |
176 | int i; | |
177 | ||
178 | memset(hw, 0, sizeof(hw_regs_t)); | |
4c3032d8 BZ |
179 | for (i = 0; i <= 7; i++) |
180 | hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i; | |
181 | hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT; | |
1da177e4 | 182 | hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ; |
1da177e4 LT |
183 | hw->chipset = ide_generic; |
184 | } | |
185 | ||
f81eb80b | 186 | static const struct ide_port_info h8300_port_info = { |
374e042c | 187 | .tp_ops = &h8300_tp_ops, |
f81eb80b BZ |
188 | .host_flags = IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_NO_DMA, |
189 | }; | |
190 | ||
ade2daf9 | 191 | static int __init h8300_ide_init(void) |
1da177e4 | 192 | { |
c97c6aca | 193 | hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; |
1da177e4 | 194 | |
740c397c BZ |
195 | printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n"); |
196 | ||
1da177e4 LT |
197 | if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300")) |
198 | goto out_busy; | |
199 | if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) { | |
200 | release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8); | |
201 | goto out_busy; | |
202 | } | |
203 | ||
204 | hw_setup(&hw); | |
205 | ||
6f904d01 | 206 | return ide_host_add(&h8300_port_info, hws, NULL); |
1da177e4 LT |
207 | |
208 | out_busy: | |
209 | printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n"); | |
ade2daf9 BZ |
210 | |
211 | return -EBUSY; | |
1da177e4 | 212 | } |
ade2daf9 BZ |
213 | |
214 | module_init(h8300_ide_init); | |
f95dc320 AB |
215 | |
216 | MODULE_LICENSE("GPL"); |