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// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/ide.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/seq_file.h>
#include "ide-disk.h"
static int smart_enable(ide_drive_t *drive)
{
struct ide_cmd cmd;
struct ide_taskfile *tf = &cmd.tf;
memset(&cmd, 0, sizeof(cmd));
tf->feature = ATA_SMART_ENABLE;
tf->lbam = ATA_SMART_LBAM_PASS;
tf->lbah = ATA_SMART_LBAH_PASS;
tf->command = ATA_CMD_SMART;
cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
return ide_no_data_taskfile(drive, &cmd);
}
static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
{
struct ide_cmd cmd;
struct ide_taskfile *tf = &cmd.tf;
memset(&cmd, 0, sizeof(cmd));
tf->feature = sub_cmd;
tf->nsect = 0x01;
tf->lbam = ATA_SMART_LBAM_PASS;
tf->lbah = ATA_SMART_LBAH_PASS;
tf->command = ATA_CMD_SMART;
cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
cmd.protocol = ATA_PROT_PIO;
return ide_raw_taskfile(drive, &cmd, buf, 1);
}
static int idedisk_cache_proc_show(struct seq_file *m, void *v)
{
ide_drive_t *drive = (ide_drive_t *) m->private;
if (drive->dev_flags & IDE_DFLAG_ID_READ)
seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
else
seq_printf(m, "(none)\n");
return 0;
}
static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
{
ide_drive_t*drive = (ide_drive_t *)m->private;
seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
return 0;
}
static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
{
u8 *buf;
buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
(void)smart_enable(drive);
if (get_smart_data(drive, buf, sub_cmd) == 0) {
__le16 *val = (__le16 *)buf;
int i;
for (i = 0; i < SECTOR_SIZE / 2; i++) {
seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
(i % 8) == 7 ? '\n' : ' ');
}
}
kfree(buf);
return 0;
}
static int idedisk_sv_proc_show(struct seq_file *m, void *v)
{
return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
}
static int idedisk_st_proc_show(struct seq_file *m, void *v)
{
return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
}
ide_proc_entry_t ide_disk_proc[] = {
{ "cache", S_IFREG|S_IRUGO, idedisk_cache_proc_show },
{ "capacity", S_IFREG|S_IRUGO, idedisk_capacity_proc_show },
{ "geometry", S_IFREG|S_IRUGO, ide_geometry_proc_show },
{ "smart_values", S_IFREG|S_IRUSR, idedisk_sv_proc_show },
{ "smart_thresholds", S_IFREG|S_IRUSR, idedisk_st_proc_show },
{}
};
ide_devset_rw_field(bios_cyl, bios_cyl);
ide_devset_rw_field(bios_head, bios_head);
ide_devset_rw_field(bios_sect, bios_sect);
ide_devset_rw_field(failures, failures);
ide_devset_rw_field(lun, lun);
ide_devset_rw_field(max_failures, max_failures);
const struct ide_proc_devset ide_disk_settings[] = {
IDE_PROC_DEVSET(acoustic, 0, 254),
IDE_PROC_DEVSET(address, 0, 2),
IDE_PROC_DEVSET(bios_cyl, 0, 65535),
IDE_PROC_DEVSET(bios_head, 0, 255),
IDE_PROC_DEVSET(bios_sect, 0, 63),
IDE_PROC_DEVSET(failures, 0, 65535),
IDE_PROC_DEVSET(lun, 0, 7),
IDE_PROC_DEVSET(max_failures, 0, 65535),
IDE_PROC_DEVSET(multcount, 0, 16),
IDE_PROC_DEVSET(nowerr, 0, 1),
IDE_PROC_DEVSET(wcache, 0, 1),
{ NULL },
};
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