1 // SPDX-License-Identifier: GPL-2.0-only
5 #include <linux/ide.h>
9 #include <asm/ide.h>
11 #include <asm-generic/ide_iops.h>
18 static u8 ide_inb(unsigned long port)  in ide_inb()  argument
20 	return (u8) inb(port);  in ide_inb()
23 static void ide_outb(u8 val, unsigned long port)  in ide_outb()  argument
25 	outb(val, port);  in ide_outb()
32 static u8 ide_mm_inb(unsigned long port)  in ide_mm_inb()  argument
34 	return (u8) readb((void __iomem *) port);  in ide_mm_inb()
37 static void ide_mm_outb(u8 value, unsigned long port)  in ide_mm_outb()  argument
39 	writeb(value, (void __iomem *) port);  in ide_mm_outb()
44 	if (hwif->host_flags & IDE_HFLAG_MMIO)  in ide_exec_command()
45 		writeb(cmd, (void __iomem *)hwif->io_ports.command_addr);  in ide_exec_command()
47 		outb(cmd, hwif->io_ports.command_addr);  in ide_exec_command()
53 	if (hwif->host_flags & IDE_HFLAG_MMIO)  in ide_read_status()
54 		return readb((void __iomem *)hwif->io_ports.status_addr);  in ide_read_status()
56 		return inb(hwif->io_ports.status_addr);  in ide_read_status()
62 	if (hwif->host_flags & IDE_HFLAG_MMIO)  in ide_read_altstatus()
63 		return readb((void __iomem *)hwif->io_ports.ctl_addr);  in ide_read_altstatus()
65 		return inb(hwif->io_ports.ctl_addr);  in ide_read_altstatus()
71 	if (hwif->host_flags & IDE_HFLAG_MMIO)  in ide_write_devctl()
72 		writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);  in ide_write_devctl()
74 		outb(ctl, hwif->io_ports.ctl_addr);  in ide_write_devctl()
80 	ide_hwif_t *hwif = drive->hwif;  in ide_dev_select()
81 	u8 select = drive->select | ATA_DEVICE_OBS;  in ide_dev_select()
83 	if (hwif->host_flags & IDE_HFLAG_MMIO)  in ide_dev_select()
84 		writeb(select, (void __iomem *)hwif->io_ports.device_addr);  in ide_dev_select()
86 		outb(select, hwif->io_ports.device_addr);  in ide_dev_select()
92 	ide_hwif_t *hwif = drive->hwif;  in ide_tf_load()
93 	struct ide_io_ports *io_ports = &hwif->io_ports;  in ide_tf_load()
94 	void (*tf_outb)(u8 addr, unsigned long port);  in ide_tf_load()
95 	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;  in ide_tf_load()
103 		tf_outb(tf->feature, io_ports->feature_addr);  in ide_tf_load()
105 		tf_outb(tf->nsect, io_ports->nsect_addr);  in ide_tf_load()
107 		tf_outb(tf->lbal, io_ports->lbal_addr);  in ide_tf_load()
109 		tf_outb(tf->lbam, io_ports->lbam_addr);  in ide_tf_load()
111 		tf_outb(tf->lbah, io_ports->lbah_addr);  in ide_tf_load()
113 		tf_outb(tf->device, io_ports->device_addr);  in ide_tf_load()
119 	ide_hwif_t *hwif = drive->hwif;  in ide_tf_read()
120 	struct ide_io_ports *io_ports = &hwif->io_ports;  in ide_tf_read()
121 	u8 (*tf_inb)(unsigned long port);  in ide_tf_read()
122 	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;  in ide_tf_read()
130 		tf->error  = tf_inb(io_ports->feature_addr);  in ide_tf_read()
132 		tf->nsect  = tf_inb(io_ports->nsect_addr);  in ide_tf_read()
134 		tf->lbal   = tf_inb(io_ports->lbal_addr);  in ide_tf_read()
136 		tf->lbam   = tf_inb(io_ports->lbam_addr);  in ide_tf_read()
138 		tf->lbah   = tf_inb(io_ports->lbah_addr);  in ide_tf_read()
140 		tf->device = tf_inb(io_ports->device_addr);  in ide_tf_read()
146  * when using 32-bit I/O instructions to transfer data.  We call this
151 static void ata_vlb_sync(unsigned long port)  in ata_vlb_sync()  argument
153 	(void)inb(port);  in ata_vlb_sync()
154 	(void)inb(port);  in ata_vlb_sync()
155 	(void)inb(port);  in ata_vlb_sync()
159  * This is used for most PIO data transfers *from* the IDE interface
168 	ide_hwif_t *hwif = drive->hwif;  in ide_input_data()
169 	struct ide_io_ports *io_ports = &hwif->io_ports;  in ide_input_data()
170 	unsigned long data_addr = io_ports->data_addr;  in ide_input_data()
172 	u8 io_32bit = drive->io_32bit;  in ide_input_data()
173 	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;  in ide_input_data()
180 			ata_vlb_sync(io_ports->nsect_addr);  in ide_input_data()
207  * This is used for most PIO data transfers *to* the IDE interface
212 	ide_hwif_t *hwif = drive->hwif;  in ide_output_data()
213 	struct ide_io_ports *io_ports = &hwif->io_ports;  in ide_output_data()
214 	unsigned long data_addr = io_ports->data_addr;  in ide_output_data()
216 	u8 io_32bit = drive->io_32bit;  in ide_output_data()
217 	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;  in ide_output_data()
224 			ata_vlb_sync(io_ports->nsect_addr);  in ide_output_data()