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- converted to platform bus - removed pci dependencies - removed virt_to_phys/phys_to_virt calls System now can root off of a disk. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README new file mode 100644
562 lines
14 KiB
C
562 lines
14 KiB
C
/*
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* linux/drivers/ide/ide-proc.c Version 1.05 Mar 05, 2003
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*
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* Copyright (C) 1997-1998 Mark Lord
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* Copyright (C) 2003 Red Hat <alan@redhat.com>
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*/
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/*
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* This is the /proc/ide/ filesystem implementation.
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*
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* Drive/Driver settings can be retrieved by reading the drive's
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* "settings" files. e.g. "cat /proc/ide0/hda/settings"
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* To write a new value "val" into a specific setting "name", use:
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* echo "name:val" >/proc/ide/ide0/hda/settings
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*
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* Also useful, "cat /proc/ide0/hda/[identify, smart_values,
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* smart_thresholds, capabilities]" will issue an IDENTIFY /
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* PACKET_IDENTIFY / SMART_READ_VALUES / SMART_READ_THRESHOLDS /
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* SENSE CAPABILITIES command to /dev/hda, and then dump out the
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* returned data as 256 16-bit words. The "hdparm" utility will
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* be updated someday soon to use this mechanism.
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*
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <asm/uaccess.h>
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/proc_fs.h>
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#include <linux/stat.h>
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#include <linux/mm.h>
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#include <linux/pci.h>
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#include <linux/ctype.h>
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#include <linux/hdreg.h>
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#include <linux/ide.h>
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#include <linux/seq_file.h>
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#include <asm/io.h>
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static int proc_ide_read_imodel
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_hwif_t *hwif = (ide_hwif_t *) data;
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int len;
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const char *name;
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/*
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* Neither ide_unknown nor ide_forced should be set at this point.
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*/
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switch (hwif->chipset) {
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case ide_generic: name = "generic"; break;
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case ide_pci: name = "pci"; break;
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case ide_cmd640: name = "cmd640"; break;
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case ide_dtc2278: name = "dtc2278"; break;
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case ide_ali14xx: name = "ali14xx"; break;
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case ide_qd65xx: name = "qd65xx"; break;
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case ide_umc8672: name = "umc8672"; break;
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case ide_ht6560b: name = "ht6560b"; break;
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case ide_rz1000: name = "rz1000"; break;
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case ide_trm290: name = "trm290"; break;
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case ide_cmd646: name = "cmd646"; break;
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case ide_cy82c693: name = "cy82c693"; break;
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case ide_4drives: name = "4drives"; break;
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case ide_pmac: name = "mac-io"; break;
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case ide_au1xxx: name = "au1xxx"; break;
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default: name = "(unknown)"; break;
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}
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len = sprintf(page, "%s\n", name);
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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static int proc_ide_read_mate
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_hwif_t *hwif = (ide_hwif_t *) data;
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int len;
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if (hwif && hwif->mate && hwif->mate->present)
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len = sprintf(page, "%s\n", hwif->mate->name);
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else
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len = sprintf(page, "(none)\n");
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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static int proc_ide_read_channel
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_hwif_t *hwif = (ide_hwif_t *) data;
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int len;
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page[0] = hwif->channel ? '1' : '0';
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page[1] = '\n';
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len = 2;
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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static int proc_ide_read_identify
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *)data;
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int len = 0, i = 0;
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int err = 0;
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len = sprintf(page, "\n");
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if (drive) {
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unsigned short *val = (unsigned short *) page;
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err = taskfile_lib_get_identify(drive, page);
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if (!err) {
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char *out = ((char *)page) + (SECTOR_WORDS * 4);
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page = out;
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do {
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out += sprintf(out, "%04x%c",
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le16_to_cpu(*val), (++i & 7) ? ' ' : '\n');
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val += 1;
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} while (i < (SECTOR_WORDS * 2));
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len = out - page;
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}
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}
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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static void proc_ide_settings_warn(void)
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{
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static int warned = 0;
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if (warned)
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return;
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printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is "
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"obsolete, and will be removed soon!\n");
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warned = 1;
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}
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static int proc_ide_read_settings
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *) data;
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ide_settings_t *setting = (ide_settings_t *) drive->settings;
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char *out = page;
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int len, rc, mul_factor, div_factor;
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proc_ide_settings_warn();
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down(&ide_setting_sem);
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out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n");
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out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n");
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while(setting) {
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mul_factor = setting->mul_factor;
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div_factor = setting->div_factor;
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out += sprintf(out, "%-24s", setting->name);
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if ((rc = ide_read_setting(drive, setting)) >= 0)
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out += sprintf(out, "%-16d", rc * mul_factor / div_factor);
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else
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out += sprintf(out, "%-16s", "write-only");
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out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor);
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if (setting->rw & SETTING_READ)
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out += sprintf(out, "r");
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if (setting->rw & SETTING_WRITE)
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out += sprintf(out, "w");
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out += sprintf(out, "\n");
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setting = setting->next;
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}
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len = out - page;
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up(&ide_setting_sem);
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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#define MAX_LEN 30
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static int proc_ide_write_settings(struct file *file, const char __user *buffer,
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unsigned long count, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *) data;
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char name[MAX_LEN + 1];
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int for_real = 0;
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unsigned long n;
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ide_settings_t *setting;
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char *buf, *s;
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if (!capable(CAP_SYS_ADMIN))
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return -EACCES;
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proc_ide_settings_warn();
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if (count >= PAGE_SIZE)
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return -EINVAL;
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s = buf = (char *)__get_free_page(GFP_USER);
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if (!buf)
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return -ENOMEM;
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if (copy_from_user(buf, buffer, count)) {
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free_page((unsigned long)buf);
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return -EFAULT;
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}
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buf[count] = '\0';
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/*
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* Skip over leading whitespace
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*/
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while (count && isspace(*s)) {
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--count;
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++s;
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}
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/*
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* Do one full pass to verify all parameters,
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* then do another to actually write the new settings.
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*/
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do {
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char *p = s;
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n = count;
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while (n > 0) {
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unsigned val;
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char *q = p;
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while (n > 0 && *p != ':') {
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--n;
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p++;
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}
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if (*p != ':')
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goto parse_error;
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if (p - q > MAX_LEN)
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goto parse_error;
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memcpy(name, q, p - q);
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name[p - q] = 0;
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if (n > 0) {
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--n;
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p++;
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} else
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goto parse_error;
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val = simple_strtoul(p, &q, 10);
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n -= q - p;
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p = q;
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if (n > 0 && !isspace(*p))
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goto parse_error;
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while (n > 0 && isspace(*p)) {
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--n;
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++p;
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}
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down(&ide_setting_sem);
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setting = ide_find_setting_by_name(drive, name);
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if (!setting)
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{
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up(&ide_setting_sem);
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goto parse_error;
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}
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if (for_real)
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ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
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up(&ide_setting_sem);
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}
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} while (!for_real++);
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free_page((unsigned long)buf);
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return count;
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parse_error:
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free_page((unsigned long)buf);
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printk("proc_ide_write_settings(): parse error\n");
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return -EINVAL;
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}
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int proc_ide_read_capacity
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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int len = sprintf(page,"%llu\n", (long long)0x7fffffff);
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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EXPORT_SYMBOL_GPL(proc_ide_read_capacity);
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int proc_ide_read_geometry
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *) data;
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char *out = page;
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int len;
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out += sprintf(out,"physical %d/%d/%d\n",
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drive->cyl, drive->head, drive->sect);
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out += sprintf(out,"logical %d/%d/%d\n",
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drive->bios_cyl, drive->bios_head, drive->bios_sect);
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len = out - page;
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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EXPORT_SYMBOL(proc_ide_read_geometry);
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static int proc_ide_read_dmodel
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *) data;
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struct hd_driveid *id = drive->id;
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int len;
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len = sprintf(page, "%.40s\n",
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(id && id->model[0]) ? (char *)id->model : "(none)");
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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static int proc_ide_read_driver
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *) data;
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struct device *dev = &drive->gendev;
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ide_driver_t *ide_drv;
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int len;
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down_read(&dev->bus->subsys.rwsem);
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if (dev->driver) {
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ide_drv = container_of(dev->driver, ide_driver_t, gen_driver);
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len = sprintf(page, "%s version %s\n",
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dev->driver->name, ide_drv->version);
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} else
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len = sprintf(page, "ide-default version 0.9.newide\n");
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up_read(&dev->bus->subsys.rwsem);
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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static int ide_replace_subdriver(ide_drive_t *drive, const char *driver)
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{
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struct device *dev = &drive->gendev;
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int ret = 1;
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down_write(&dev->bus->subsys.rwsem);
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device_release_driver(dev);
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/* FIXME: device can still be in use by previous driver */
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strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
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device_attach(dev);
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drive->driver_req[0] = 0;
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if (dev->driver == NULL)
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device_attach(dev);
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if (dev->driver && !strcmp(dev->driver->name, driver))
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ret = 0;
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up_write(&dev->bus->subsys.rwsem);
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return ret;
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}
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static int proc_ide_write_driver
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(struct file *file, const char __user *buffer, unsigned long count, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *) data;
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char name[32];
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if (!capable(CAP_SYS_ADMIN))
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return -EACCES;
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if (count > 31)
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count = 31;
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if (copy_from_user(name, buffer, count))
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return -EFAULT;
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name[count] = '\0';
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if (ide_replace_subdriver(drive, name))
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return -EINVAL;
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return count;
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}
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static int proc_ide_read_media
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(char *page, char **start, off_t off, int count, int *eof, void *data)
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{
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ide_drive_t *drive = (ide_drive_t *) data;
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const char *media;
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int len;
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switch (drive->media) {
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case ide_disk: media = "disk\n";
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break;
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case ide_cdrom: media = "cdrom\n";
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break;
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case ide_tape: media = "tape\n";
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break;
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case ide_floppy:media = "floppy\n";
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break;
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default: media = "UNKNOWN\n";
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break;
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}
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strcpy(page,media);
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len = strlen(media);
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PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
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}
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static ide_proc_entry_t generic_drive_entries[] = {
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{ "driver", S_IFREG|S_IRUGO, proc_ide_read_driver, proc_ide_write_driver },
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{ "identify", S_IFREG|S_IRUSR, proc_ide_read_identify, NULL },
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{ "media", S_IFREG|S_IRUGO, proc_ide_read_media, NULL },
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{ "model", S_IFREG|S_IRUGO, proc_ide_read_dmodel, NULL },
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{ "settings", S_IFREG|S_IRUSR|S_IWUSR,proc_ide_read_settings, proc_ide_write_settings },
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{ NULL, 0, NULL, NULL }
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};
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void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data)
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{
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struct proc_dir_entry *ent;
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if (!dir || !p)
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return;
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while (p->name != NULL) {
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ent = create_proc_entry(p->name, p->mode, dir);
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if (!ent) return;
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ent->nlink = 1;
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ent->data = data;
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ent->read_proc = p->read_proc;
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ent->write_proc = p->write_proc;
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p++;
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}
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}
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void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
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{
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if (!dir || !p)
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return;
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while (p->name != NULL) {
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remove_proc_entry(p->name, dir);
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p++;
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}
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}
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static void create_proc_ide_drives(ide_hwif_t *hwif)
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{
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int d;
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struct proc_dir_entry *ent;
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struct proc_dir_entry *parent = hwif->proc;
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char name[64];
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for (d = 0; d < MAX_DRIVES; d++) {
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ide_drive_t *drive = &hwif->drives[d];
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if (!drive->present)
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continue;
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if (drive->proc)
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continue;
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drive->proc = proc_mkdir(drive->name, parent);
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if (drive->proc)
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ide_add_proc_entries(drive->proc, generic_drive_entries, drive);
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sprintf(name,"ide%d/%s", (drive->name[2]-'a')/2, drive->name);
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ent = proc_symlink(drive->name, proc_ide_root, name);
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if (!ent) return;
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}
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}
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static void destroy_proc_ide_device(ide_hwif_t *hwif, ide_drive_t *drive)
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{
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if (drive->proc) {
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ide_remove_proc_entries(drive->proc, generic_drive_entries);
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remove_proc_entry(drive->name, proc_ide_root);
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remove_proc_entry(drive->name, hwif->proc);
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drive->proc = NULL;
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}
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}
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static void destroy_proc_ide_drives(ide_hwif_t *hwif)
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{
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int d;
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for (d = 0; d < MAX_DRIVES; d++) {
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ide_drive_t *drive = &hwif->drives[d];
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if (drive->proc)
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destroy_proc_ide_device(hwif, drive);
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}
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}
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static ide_proc_entry_t hwif_entries[] = {
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{ "channel", S_IFREG|S_IRUGO, proc_ide_read_channel, NULL },
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{ "mate", S_IFREG|S_IRUGO, proc_ide_read_mate, NULL },
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{ "model", S_IFREG|S_IRUGO, proc_ide_read_imodel, NULL },
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{ NULL, 0, NULL, NULL }
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};
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void create_proc_ide_interfaces(void)
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{
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int h;
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for (h = 0; h < MAX_HWIFS; h++) {
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ide_hwif_t *hwif = &ide_hwifs[h];
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if (!hwif->present)
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continue;
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if (!hwif->proc) {
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hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
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|
if (!hwif->proc)
|
|
return;
|
|
ide_add_proc_entries(hwif->proc, hwif_entries, hwif);
|
|
}
|
|
create_proc_ide_drives(hwif);
|
|
}
|
|
}
|
|
|
|
EXPORT_SYMBOL(create_proc_ide_interfaces);
|
|
|
|
#ifdef CONFIG_BLK_DEV_IDEPCI
|
|
void ide_pci_create_host_proc(const char *name, get_info_t *get_info)
|
|
{
|
|
create_proc_info_entry(name, 0, proc_ide_root, get_info);
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(ide_pci_create_host_proc);
|
|
#endif
|
|
|
|
void destroy_proc_ide_interface(ide_hwif_t *hwif)
|
|
{
|
|
if (hwif->proc) {
|
|
destroy_proc_ide_drives(hwif);
|
|
ide_remove_proc_entries(hwif->proc, hwif_entries);
|
|
remove_proc_entry(hwif->name, proc_ide_root);
|
|
hwif->proc = NULL;
|
|
}
|
|
}
|
|
|
|
static int proc_print_driver(struct device_driver *drv, void *data)
|
|
{
|
|
ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver);
|
|
struct seq_file *s = data;
|
|
|
|
seq_printf(s, "%s version %s\n", drv->name, ide_drv->version);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ide_drivers_show(struct seq_file *s, void *p)
|
|
{
|
|
bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver);
|
|
return 0;
|
|
}
|
|
|
|
static int ide_drivers_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, &ide_drivers_show, NULL);
|
|
}
|
|
|
|
static struct file_operations ide_drivers_operations = {
|
|
.open = ide_drivers_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
void proc_ide_create(void)
|
|
{
|
|
struct proc_dir_entry *entry;
|
|
|
|
if (!proc_ide_root)
|
|
return;
|
|
|
|
create_proc_ide_interfaces();
|
|
|
|
entry = create_proc_entry("drivers", 0, proc_ide_root);
|
|
if (entry)
|
|
entry->proc_fops = &ide_drivers_operations;
|
|
}
|
|
|
|
void proc_ide_destroy(void)
|
|
{
|
|
remove_proc_entry("drivers", proc_ide_root);
|
|
remove_proc_entry("ide", NULL);
|
|
}
|