2 #include <linux/kernel.h>
5 #if defined(CONFIG_ARM) || defined(CONFIG_M68K) || defined(CONFIG_MIPS) || \
6 defined(CONFIG_PARISC) || defined(CONFIG_PPC) || defined(CONFIG_SPARC)
9 #include <asm-generic/ide_iops.h>
13 * Conventional PIO operations for ATA devices
16 static u8 ide_inb(unsigned long port)
18 return (u8) inb(port);
21 static void ide_outb(u8 val, unsigned long port)
27 * MMIO operations, typically used for SATA controllers
30 static u8 ide_mm_inb(unsigned long port)
32 return (u8) readb((void __iomem *) port);
35 static void ide_mm_outb(u8 value, unsigned long port)
37 writeb(value, (void __iomem *) port);
40 void ide_exec_command(ide_hwif_t *hwif, u8 cmd)
42 if (hwif->host_flags & IDE_HFLAG_MMIO)
43 writeb(cmd, (void __iomem *)hwif->io_ports.command_addr);
45 outb(cmd, hwif->io_ports.command_addr);
47 EXPORT_SYMBOL_GPL(ide_exec_command);
49 u8 ide_read_status(ide_hwif_t *hwif)
51 if (hwif->host_flags & IDE_HFLAG_MMIO)
52 return readb((void __iomem *)hwif->io_ports.status_addr);
54 return inb(hwif->io_ports.status_addr);
56 EXPORT_SYMBOL_GPL(ide_read_status);
58 u8 ide_read_altstatus(ide_hwif_t *hwif)
60 if (hwif->host_flags & IDE_HFLAG_MMIO)
61 return readb((void __iomem *)hwif->io_ports.ctl_addr);
63 return inb(hwif->io_ports.ctl_addr);
65 EXPORT_SYMBOL_GPL(ide_read_altstatus);
67 void ide_set_irq(ide_hwif_t *hwif, int on)
69 u8 ctl = ATA_DEVCTL_OBS;
71 if (on == 4) { /* hack for SRST */
78 if (hwif->host_flags & IDE_HFLAG_MMIO)
79 writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
81 outb(ctl, hwif->io_ports.ctl_addr);
83 EXPORT_SYMBOL_GPL(ide_set_irq);
85 void ide_tf_load(ide_drive_t *drive, struct ide_cmd *cmd)
87 ide_hwif_t *hwif = drive->hwif;
88 struct ide_io_ports *io_ports = &hwif->io_ports;
89 struct ide_taskfile *tf = &cmd->tf;
90 void (*tf_outb)(u8 addr, unsigned long port);
91 u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
92 u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
95 tf_outb = ide_mm_outb;
99 if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
102 if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
103 u16 data = (tf->hob_data << 8) | tf->data;
106 writew(data, (void __iomem *)io_ports->data_addr);
108 outw(data, io_ports->data_addr);
111 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
112 tf_outb(tf->hob_feature, io_ports->feature_addr);
113 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
114 tf_outb(tf->hob_nsect, io_ports->nsect_addr);
115 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
116 tf_outb(tf->hob_lbal, io_ports->lbal_addr);
117 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
118 tf_outb(tf->hob_lbam, io_ports->lbam_addr);
119 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
120 tf_outb(tf->hob_lbah, io_ports->lbah_addr);
122 if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
123 tf_outb(tf->feature, io_ports->feature_addr);
124 if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
125 tf_outb(tf->nsect, io_ports->nsect_addr);
126 if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
127 tf_outb(tf->lbal, io_ports->lbal_addr);
128 if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
129 tf_outb(tf->lbam, io_ports->lbam_addr);
130 if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
131 tf_outb(tf->lbah, io_ports->lbah_addr);
133 if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
134 tf_outb((tf->device & HIHI) | drive->select,
135 io_ports->device_addr);
137 EXPORT_SYMBOL_GPL(ide_tf_load);
139 void ide_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
141 ide_hwif_t *hwif = drive->hwif;
142 struct ide_io_ports *io_ports = &hwif->io_ports;
143 struct ide_taskfile *tf = &cmd->tf;
144 void (*tf_outb)(u8 addr, unsigned long port);
145 u8 (*tf_inb)(unsigned long port);
146 u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
149 tf_outb = ide_mm_outb;
156 if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
160 data = readw((void __iomem *)io_ports->data_addr);
162 data = inw(io_ports->data_addr);
164 tf->data = data & 0xff;
165 tf->hob_data = (data >> 8) & 0xff;
168 /* be sure we're looking at the low order bits */
169 tf_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
171 if (cmd->tf_flags & IDE_TFLAG_IN_FEATURE)
172 tf->feature = tf_inb(io_ports->feature_addr);
173 if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
174 tf->nsect = tf_inb(io_ports->nsect_addr);
175 if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
176 tf->lbal = tf_inb(io_ports->lbal_addr);
177 if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
178 tf->lbam = tf_inb(io_ports->lbam_addr);
179 if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
180 tf->lbah = tf_inb(io_ports->lbah_addr);
181 if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
182 tf->device = tf_inb(io_ports->device_addr);
184 if (cmd->tf_flags & IDE_TFLAG_LBA48) {
185 tf_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
187 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
188 tf->hob_feature = tf_inb(io_ports->feature_addr);
189 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
190 tf->hob_nsect = tf_inb(io_ports->nsect_addr);
191 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
192 tf->hob_lbal = tf_inb(io_ports->lbal_addr);
193 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
194 tf->hob_lbam = tf_inb(io_ports->lbam_addr);
195 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
196 tf->hob_lbah = tf_inb(io_ports->lbah_addr);
199 EXPORT_SYMBOL_GPL(ide_tf_read);
202 * Some localbus EIDE interfaces require a special access sequence
203 * when using 32-bit I/O instructions to transfer data. We call this
204 * the "vlb_sync" sequence, which consists of three successive reads
205 * of the sector count register location, with interrupts disabled
206 * to ensure that the reads all happen together.
208 static void ata_vlb_sync(unsigned long port)
216 * This is used for most PIO data transfers *from* the IDE interface
218 * These routines will round up any request for an odd number of bytes,
219 * so if an odd len is specified, be sure that there's at least one
220 * extra byte allocated for the buffer.
222 void ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
225 ide_hwif_t *hwif = drive->hwif;
226 struct ide_io_ports *io_ports = &hwif->io_ports;
227 unsigned long data_addr = io_ports->data_addr;
228 u8 io_32bit = drive->io_32bit;
229 u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
234 unsigned long uninitialized_var(flags);
236 if ((io_32bit & 2) && !mmio) {
237 local_irq_save(flags);
238 ata_vlb_sync(io_ports->nsect_addr);
242 __ide_mm_insl((void __iomem *)data_addr, buf, len / 4);
244 insl(data_addr, buf, len / 4);
246 if ((io_32bit & 2) && !mmio)
247 local_irq_restore(flags);
249 if ((len & 3) >= 2) {
251 __ide_mm_insw((void __iomem *)data_addr,
252 (u8 *)buf + (len & ~3), 1);
254 insw(data_addr, (u8 *)buf + (len & ~3), 1);
258 __ide_mm_insw((void __iomem *)data_addr, buf, len / 2);
260 insw(data_addr, buf, len / 2);
263 EXPORT_SYMBOL_GPL(ide_input_data);
266 * This is used for most PIO data transfers *to* the IDE interface
268 void ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
271 ide_hwif_t *hwif = drive->hwif;
272 struct ide_io_ports *io_ports = &hwif->io_ports;
273 unsigned long data_addr = io_ports->data_addr;
274 u8 io_32bit = drive->io_32bit;
275 u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
280 unsigned long uninitialized_var(flags);
282 if ((io_32bit & 2) && !mmio) {
283 local_irq_save(flags);
284 ata_vlb_sync(io_ports->nsect_addr);
288 __ide_mm_outsl((void __iomem *)data_addr, buf, len / 4);
290 outsl(data_addr, buf, len / 4);
292 if ((io_32bit & 2) && !mmio)
293 local_irq_restore(flags);
295 if ((len & 3) >= 2) {
297 __ide_mm_outsw((void __iomem *)data_addr,
298 (u8 *)buf + (len & ~3), 1);
300 outsw(data_addr, (u8 *)buf + (len & ~3), 1);
304 __ide_mm_outsw((void __iomem *)data_addr, buf, len / 2);
306 outsw(data_addr, buf, len / 2);
309 EXPORT_SYMBOL_GPL(ide_output_data);
311 const struct ide_tp_ops default_tp_ops = {
312 .exec_command = ide_exec_command,
313 .read_status = ide_read_status,
314 .read_altstatus = ide_read_altstatus,
316 .set_irq = ide_set_irq,
318 .tf_load = ide_tf_load,
319 .tf_read = ide_tf_read,
321 .input_data = ide_input_data,
322 .output_data = ide_output_data,