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ec7d9c9ce8
Just set up the show callback in the tty_operations, and use proc_create_single_data to create the file without additional boilerplace code. Signed-off-by: Christoph Hellwig <hch@lst.de>
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/kernel.h>
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#include <linux/ide.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <linux/seq_file.h>
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#include "ide-disk.h"
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static int smart_enable(ide_drive_t *drive)
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{
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struct ide_cmd cmd;
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struct ide_taskfile *tf = &cmd.tf;
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memset(&cmd, 0, sizeof(cmd));
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tf->feature = ATA_SMART_ENABLE;
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tf->lbam = ATA_SMART_LBAM_PASS;
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tf->lbah = ATA_SMART_LBAH_PASS;
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tf->command = ATA_CMD_SMART;
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cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
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cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
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return ide_no_data_taskfile(drive, &cmd);
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}
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static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
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{
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struct ide_cmd cmd;
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struct ide_taskfile *tf = &cmd.tf;
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memset(&cmd, 0, sizeof(cmd));
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tf->feature = sub_cmd;
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tf->nsect = 0x01;
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tf->lbam = ATA_SMART_LBAM_PASS;
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tf->lbah = ATA_SMART_LBAH_PASS;
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tf->command = ATA_CMD_SMART;
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cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
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cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
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cmd.protocol = ATA_PROT_PIO;
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return ide_raw_taskfile(drive, &cmd, buf, 1);
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}
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static int idedisk_cache_proc_show(struct seq_file *m, void *v)
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{
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ide_drive_t *drive = (ide_drive_t *) m->private;
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if (drive->dev_flags & IDE_DFLAG_ID_READ)
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seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
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else
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seq_printf(m, "(none)\n");
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return 0;
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}
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static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
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{
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ide_drive_t*drive = (ide_drive_t *)m->private;
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seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
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return 0;
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}
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static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
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{
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u8 *buf;
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buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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(void)smart_enable(drive);
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if (get_smart_data(drive, buf, sub_cmd) == 0) {
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__le16 *val = (__le16 *)buf;
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int i;
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for (i = 0; i < SECTOR_SIZE / 2; i++) {
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seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
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(i % 8) == 7 ? '\n' : ' ');
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}
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}
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kfree(buf);
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return 0;
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}
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static int idedisk_sv_proc_show(struct seq_file *m, void *v)
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{
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return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
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}
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static int idedisk_st_proc_show(struct seq_file *m, void *v)
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{
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return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
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}
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ide_proc_entry_t ide_disk_proc[] = {
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{ "cache", S_IFREG|S_IRUGO, idedisk_cache_proc_show },
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{ "capacity", S_IFREG|S_IRUGO, idedisk_capacity_proc_show },
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{ "geometry", S_IFREG|S_IRUGO, ide_geometry_proc_show },
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{ "smart_values", S_IFREG|S_IRUSR, idedisk_sv_proc_show },
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{ "smart_thresholds", S_IFREG|S_IRUSR, idedisk_st_proc_show },
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{}
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};
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ide_devset_rw_field(bios_cyl, bios_cyl);
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ide_devset_rw_field(bios_head, bios_head);
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ide_devset_rw_field(bios_sect, bios_sect);
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ide_devset_rw_field(failures, failures);
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ide_devset_rw_field(lun, lun);
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ide_devset_rw_field(max_failures, max_failures);
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const struct ide_proc_devset ide_disk_settings[] = {
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IDE_PROC_DEVSET(acoustic, 0, 254),
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IDE_PROC_DEVSET(address, 0, 2),
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IDE_PROC_DEVSET(bios_cyl, 0, 65535),
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IDE_PROC_DEVSET(bios_head, 0, 255),
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IDE_PROC_DEVSET(bios_sect, 0, 63),
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IDE_PROC_DEVSET(failures, 0, 65535),
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IDE_PROC_DEVSET(lun, 0, 7),
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IDE_PROC_DEVSET(max_failures, 0, 65535),
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IDE_PROC_DEVSET(multcount, 0, 16),
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IDE_PROC_DEVSET(nowerr, 0, 1),
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IDE_PROC_DEVSET(wcache, 0, 1),
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{ NULL },
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};
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