Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 521 insertions, 0 deletions

diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
new file mode 100644
index 0000000..bdff5ac
--- /dev/null
+++ b/drivers/ide/ide-proc.c
@@ -0,0 +1,521 @@
+/*
+ *  linux/drivers/ide/ide-proc.c	Version 1.05	Mar 05, 2003
+ *
+ *  Copyright (C) 1997-1998	Mark Lord
+ *  Copyright (C) 2003		Red Hat <alan@redhat.com>
+ */
+
+/*
+ * This is the /proc/ide/ filesystem implementation.
+ *
+ * Drive/Driver settings can be retrieved by reading the drive's
+ * "settings" files.  e.g.    "cat /proc/ide0/hda/settings"
+ * To write a new value "val" into a specific setting "name", use:
+ *   echo "name:val" >/proc/ide/ide0/hda/settings
+ *
+ * Also useful, "cat /proc/ide0/hda/[identify, smart_values,
+ * smart_thresholds, capabilities]" will issue an IDENTIFY /
+ * PACKET_IDENTIFY / SMART_READ_VALUES / SMART_READ_THRESHOLDS /
+ * SENSE CAPABILITIES command to /dev/hda, and then dump out the
+ * returned data as 256 16-bit words.  The "hdparm" utility will
+ * be updated someday soon to use this mechanism.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <asm/uaccess.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/ctype.h>
+#include <linux/hdreg.h>
+#include <linux/ide.h>
+#include <linux/seq_file.h>
+
+#include <asm/io.h>
+
+static int proc_ide_read_imodel
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_hwif_t	*hwif = (ide_hwif_t *) data;
+	int		len;
+	const char	*name;
+
+	/*
+	 * Neither ide_unknown nor ide_forced should be set at this point.
+	 */
+	switch (hwif->chipset) {
+		case ide_generic:	name = "generic";	break;
+		case ide_pci:		name = "pci";		break;
+		case ide_cmd640:	name = "cmd640";	break;
+		case ide_dtc2278:	name = "dtc2278";	break;
+		case ide_ali14xx:	name = "ali14xx";	break;
+		case ide_qd65xx:	name = "qd65xx";	break;
+		case ide_umc8672:	name = "umc8672";	break;
+		case ide_ht6560b:	name = "ht6560b";	break;
+		case ide_rz1000:	name = "rz1000";	break;
+		case ide_trm290:	name = "trm290";	break;
+		case ide_cmd646:	name = "cmd646";	break;
+		case ide_cy82c693:	name = "cy82c693";	break;
+		case ide_4drives:	name = "4drives";	break;
+		case ide_pmac:		name = "mac-io";	break;
+		default:		name = "(unknown)";	break;
+	}
+	len = sprintf(page, "%s\n", name);
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+static int proc_ide_read_mate
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_hwif_t	*hwif = (ide_hwif_t *) data;
+	int		len;
+
+	if (hwif && hwif->mate && hwif->mate->present)
+		len = sprintf(page, "%s\n", hwif->mate->name);
+	else
+		len = sprintf(page, "(none)\n");
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+static int proc_ide_read_channel
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_hwif_t	*hwif = (ide_hwif_t *) data;
+	int		len;
+
+	page[0] = hwif->channel ? '1' : '0';
+	page[1] = '\n';
+	len = 2;
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+static int proc_ide_read_identify
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *)data;
+	int		len = 0, i = 0;
+	int		err = 0;
+
+	len = sprintf(page, "\n");
+
+	if (drive) {
+		unsigned short *val = (unsigned short *) page;
+
+		err = taskfile_lib_get_identify(drive, page);
+		if (!err) {
+			char *out = ((char *)page) + (SECTOR_WORDS * 4);
+			page = out;
+			do {
+				out += sprintf(out, "%04x%c",
+					le16_to_cpu(*val), (++i & 7) ? ' ' : '\n');
+				val += 1;
+			} while (i < (SECTOR_WORDS * 2));
+			len = out - page;
+		}
+	}
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+static void proc_ide_settings_warn(void)
+{
+	static int warned = 0;
+
+	if (warned)
+		return;
+
+	printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is "
+			    "obsolete, and will be removed soon!\n");
+	warned = 1;
+}
+
+static int proc_ide_read_settings
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *) data;
+	ide_settings_t	*setting = (ide_settings_t *) drive->settings;
+	char		*out = page;
+	int		len, rc, mul_factor, div_factor;
+
+	proc_ide_settings_warn();
+
+	down(&ide_setting_sem);
+	out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n");
+	out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n");
+	while(setting) {
+		mul_factor = setting->mul_factor;
+		div_factor = setting->div_factor;
+		out += sprintf(out, "%-24s", setting->name);
+		if ((rc = ide_read_setting(drive, setting)) >= 0)
+			out += sprintf(out, "%-16d", rc * mul_factor / div_factor);
+		else
+			out += sprintf(out, "%-16s", "write-only");
+		out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor);
+		if (setting->rw & SETTING_READ)
+			out += sprintf(out, "r");
+		if (setting->rw & SETTING_WRITE)
+			out += sprintf(out, "w");
+		out += sprintf(out, "\n");
+		setting = setting->next;
+	}
+	len = out - page;
+	up(&ide_setting_sem);
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+#define MAX_LEN	30
+
+static int proc_ide_write_settings(struct file *file, const char __user *buffer,
+				   unsigned long count, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *) data;
+	char		name[MAX_LEN + 1];
+	int		for_real = 0;
+	unsigned long	n;
+	ide_settings_t	*setting;
+	char *buf, *s;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+
+	proc_ide_settings_warn();
+
+	if (count >= PAGE_SIZE)
+		return -EINVAL;
+
+	s = buf = (char *)__get_free_page(GFP_USER);
+	if (!buf)
+		return -ENOMEM;
+
+	if (copy_from_user(buf, buffer, count)) {
+		free_page((unsigned long)buf);
+		return -EFAULT;
+	}
+
+	buf[count] = '\0';
+
+	/*
+	 * Skip over leading whitespace
+	 */
+	while (count && isspace(*s)) {
+		--count;
+		++s;
+	}
+	/*
+	 * Do one full pass to verify all parameters,
+	 * then do another to actually write the new settings.
+	 */
+	do {
+		char *p = s;
+		n = count;
+		while (n > 0) {
+			unsigned val;
+			char *q = p;
+
+			while (n > 0 && *p != ':') {
+				--n;
+				p++;
+			}
+			if (*p != ':')
+				goto parse_error;
+			if (p - q > MAX_LEN)
+				goto parse_error;
+			memcpy(name, q, p - q);
+			name[p - q] = 0;
+
+			if (n > 0) {
+				--n;
+				p++;
+			} else
+				goto parse_error;
+
+			val = simple_strtoul(p, &q, 10);
+			n -= q - p;
+			p = q;
+			if (n > 0 && !isspace(*p))
+				goto parse_error;
+			while (n > 0 && isspace(*p)) {
+				--n;
+				++p;
+			}
+
+			down(&ide_setting_sem);
+			setting = ide_find_setting_by_name(drive, name);
+			if (!setting)
+			{
+				up(&ide_setting_sem);
+				goto parse_error;
+			}
+			if (for_real)
+				ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
+			up(&ide_setting_sem);
+		}
+	} while (!for_real++);
+	free_page((unsigned long)buf);
+	return count;
+parse_error:
+	free_page((unsigned long)buf);
+	printk("proc_ide_write_settings(): parse error\n");
+	return -EINVAL;
+}
+
+int proc_ide_read_capacity
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	int len = sprintf(page,"%llu\n", (long long)0x7fffffff);
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+EXPORT_SYMBOL_GPL(proc_ide_read_capacity);
+
+int proc_ide_read_geometry
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *) data;
+	char		*out = page;
+	int		len;
+
+	out += sprintf(out,"physical     %d/%d/%d\n",
+			drive->cyl, drive->head, drive->sect);
+	out += sprintf(out,"logical      %d/%d/%d\n",
+			drive->bios_cyl, drive->bios_head, drive->bios_sect);
+
+	len = out - page;
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+EXPORT_SYMBOL(proc_ide_read_geometry);
+
+static int proc_ide_read_dmodel
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *) data;
+	struct hd_driveid *id = drive->id;
+	int		len;
+
+	len = sprintf(page, "%.40s\n",
+		(id && id->model[0]) ? (char *)id->model : "(none)");
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+static int proc_ide_read_driver
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *) data;
+	ide_driver_t	*driver = drive->driver;
+	int		len;
+
+	if (driver) {
+		len = sprintf(page, "%s version %s\n",
+				driver->name, driver->version);
+	} else
+		len = sprintf(page, "ide-default version 0.9.newide\n");
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+static int proc_ide_write_driver
+	(struct file *file, const char __user *buffer, unsigned long count, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *) data;
+	char name[32];
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+	if (count > 31)
+		count = 31;
+	if (copy_from_user(name, buffer, count))
+		return -EFAULT;
+	name[count] = '\0';
+	if (ide_replace_subdriver(drive, name))
+		return -EINVAL;
+	return count;
+}
+
+static int proc_ide_read_media
+	(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	ide_drive_t	*drive = (ide_drive_t *) data;
+	const char	*media;
+	int		len;
+
+	switch (drive->media) {
+		case ide_disk:	media = "disk\n";
+				break;
+		case ide_cdrom:	media = "cdrom\n";
+				break;
+		case ide_tape:	media = "tape\n";
+				break;
+		case ide_floppy:media = "floppy\n";
+				break;
+		default:	media = "UNKNOWN\n";
+				break;
+	}
+	strcpy(page,media);
+	len = strlen(media);
+	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+}
+
+static ide_proc_entry_t generic_drive_entries[] = {
+	{ "driver",	S_IFREG|S_IRUGO,	proc_ide_read_driver,	proc_ide_write_driver },
+	{ "identify",	S_IFREG|S_IRUSR,	proc_ide_read_identify,	NULL },
+	{ "media",	S_IFREG|S_IRUGO,	proc_ide_read_media,	NULL },
+	{ "model",	S_IFREG|S_IRUGO,	proc_ide_read_dmodel,	NULL },
+	{ "settings",	S_IFREG|S_IRUSR|S_IWUSR,proc_ide_read_settings,	proc_ide_write_settings },
+	{ NULL,	0, NULL, NULL }
+};
+
+void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data)
+{
+	struct proc_dir_entry *ent;
+
+	if (!dir || !p)
+		return;
+	while (p->name != NULL) {
+		ent = create_proc_entry(p->name, p->mode, dir);
+		if (!ent) return;
+		ent->nlink = 1;
+		ent->data = data;
+		ent->read_proc = p->read_proc;
+		ent->write_proc = p->write_proc;
+		p++;
+	}
+}
+
+void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
+{
+	if (!dir || !p)
+		return;
+	while (p->name != NULL) {
+		remove_proc_entry(p->name, dir);
+		p++;
+	}
+}
+
+static void create_proc_ide_drives(ide_hwif_t *hwif)
+{
+	int	d;
+	struct proc_dir_entry *ent;
+	struct proc_dir_entry *parent = hwif->proc;
+	char name[64];
+
+	for (d = 0; d < MAX_DRIVES; d++) {
+		ide_drive_t *drive = &hwif->drives[d];
+
+		if (!drive->present)
+			continue;
+		if (drive->proc)
+			continue;
+
+		drive->proc = proc_mkdir(drive->name, parent);
+		if (drive->proc)
+			ide_add_proc_entries(drive->proc, generic_drive_entries, drive);
+		sprintf(name,"ide%d/%s", (drive->name[2]-'a')/2, drive->name);
+		ent = proc_symlink(drive->name, proc_ide_root, name);
+		if (!ent) return;
+	}
+}
+
+static void destroy_proc_ide_device(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+	if (drive->proc) {
+		ide_remove_proc_entries(drive->proc, generic_drive_entries);
+		remove_proc_entry(drive->name, proc_ide_root);
+		remove_proc_entry(drive->name, hwif->proc);
+		drive->proc = NULL;
+	}
+}
+
+static void destroy_proc_ide_drives(ide_hwif_t *hwif)
+{
+	int	d;
+
+	for (d = 0; d < MAX_DRIVES; d++) {
+		ide_drive_t *drive = &hwif->drives[d];
+		if (drive->proc)
+			destroy_proc_ide_device(hwif, drive);
+	}
+}
+
+static ide_proc_entry_t hwif_entries[] = {
+	{ "channel",	S_IFREG|S_IRUGO,	proc_ide_read_channel,	NULL },
+	{ "mate",	S_IFREG|S_IRUGO,	proc_ide_read_mate,	NULL },
+	{ "model",	S_IFREG|S_IRUGO,	proc_ide_read_imodel,	NULL },
+	{ NULL,	0, NULL, NULL }
+};
+
+void create_proc_ide_interfaces(void)
+{
+	int	h;
+
+	for (h = 0; h < MAX_HWIFS; h++) {
+		ide_hwif_t *hwif = &ide_hwifs[h];
+
+		if (!hwif->present)
+			continue;
+		if (!hwif->proc) {
+			hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
+			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;
+	}
+}
+
+extern struct seq_operations ide_drivers_op;
+static int ide_drivers_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &ide_drivers_op);
+}
+static struct file_operations ide_drivers_operations = {
+	.open		= ide_drivers_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_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("ide/drivers", proc_ide_root);
+	remove_proc_entry("ide", NULL);
+}