i386: move kernel/cpu/mtrr

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 439 deletions

diff --git a/arch/i386/kernel/cpu/mtrr/if.c b/arch/i386/kernel/cpu/mtrr/if.c
deleted file mode 100644
index c7d8f175674..00000000000
--- a/arch/i386/kernel/cpu/mtrr/if.c
+++ /dev/null
@@ -1,439 +0,0 @@
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-#include <linux/capability.h>
-#include <linux/ctype.h>
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <asm/uaccess.h>
-
-#define LINE_SIZE 80
-
-#include <asm/mtrr.h>
-#include "mtrr.h"
-
-/* RED-PEN: this is accessed without any locking */
-extern unsigned int *usage_table;
-
-
-#define FILE_FCOUNT(f) (((struct seq_file *)((f)->private_data))->private)
-
-static const char *const mtrr_strings[MTRR_NUM_TYPES] =
-{
-    "uncachable",               /* 0 */
-    "write-combining",          /* 1 */
-    "?",                        /* 2 */
-    "?",                        /* 3 */
-    "write-through",            /* 4 */
-    "write-protect",            /* 5 */
-    "write-back",               /* 6 */
-};
-
-const char *mtrr_attrib_to_str(int x)
-{
-	return (x <= 6) ? mtrr_strings[x] : "?";
-}
-
-#ifdef CONFIG_PROC_FS
-
-static int
-mtrr_file_add(unsigned long base, unsigned long size,
-	      unsigned int type, char increment, struct file *file, int page)
-{
-	int reg, max;
-	unsigned int *fcount = FILE_FCOUNT(file); 
-
-	max = num_var_ranges;
-	if (fcount == NULL) {
-		fcount = kzalloc(max * sizeof *fcount, GFP_KERNEL);
-		if (!fcount)
-			return -ENOMEM;
-		FILE_FCOUNT(file) = fcount;
-	}
-	if (!page) {
-		if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1)))
-			return -EINVAL;
-		base >>= PAGE_SHIFT;
-		size >>= PAGE_SHIFT;
-	}
-	reg = mtrr_add_page(base, size, type, 1);
-	if (reg >= 0)
-		++fcount[reg];
-	return reg;
-}
-
-static int
-mtrr_file_del(unsigned long base, unsigned long size,
-	      struct file *file, int page)
-{
-	int reg;
-	unsigned int *fcount = FILE_FCOUNT(file);
-
-	if (!page) {
-		if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1)))
-			return -EINVAL;
-		base >>= PAGE_SHIFT;
-		size >>= PAGE_SHIFT;
-	}
-	reg = mtrr_del_page(-1, base, size);
-	if (reg < 0)
-		return reg;
-	if (fcount == NULL)
-		return reg;
-	if (fcount[reg] < 1)
-		return -EINVAL;
-	--fcount[reg];
-	return reg;
-}
-
-/* RED-PEN: seq_file can seek now. this is ignored. */
-static ssize_t
-mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
-/*  Format of control line:
-    "base=%Lx size=%Lx type=%s"     OR:
-    "disable=%d"
-*/
-{
-	int i, err;
-	unsigned long reg;
-	unsigned long long base, size;
-	char *ptr;
-	char line[LINE_SIZE];
-	size_t linelen;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-	if (!len)
-		return -EINVAL;
-	memset(line, 0, LINE_SIZE);
-	if (len > LINE_SIZE)
-		len = LINE_SIZE;
-	if (copy_from_user(line, buf, len - 1))
-		return -EFAULT;
-	linelen = strlen(line);
-	ptr = line + linelen - 1;
-	if (linelen && *ptr == '\n')
-		*ptr = '\0';
-	if (!strncmp(line, "disable=", 8)) {
-		reg = simple_strtoul(line + 8, &ptr, 0);
-		err = mtrr_del_page(reg, 0, 0);
-		if (err < 0)
-			return err;
-		return len;
-	}
-	if (strncmp(line, "base=", 5))
-		return -EINVAL;
-	base = simple_strtoull(line + 5, &ptr, 0);
-	for (; isspace(*ptr); ++ptr) ;
-	if (strncmp(ptr, "size=", 5))
-		return -EINVAL;
-	size = simple_strtoull(ptr + 5, &ptr, 0);
-	if ((base & 0xfff) || (size & 0xfff))
-		return -EINVAL;
-	for (; isspace(*ptr); ++ptr) ;
-	if (strncmp(ptr, "type=", 5))
-		return -EINVAL;
-	ptr += 5;
-	for (; isspace(*ptr); ++ptr) ;
-	for (i = 0; i < MTRR_NUM_TYPES; ++i) {
-		if (strcmp(ptr, mtrr_strings[i]))
-			continue;
-		base >>= PAGE_SHIFT;
-		size >>= PAGE_SHIFT;
-		err =
-		    mtrr_add_page((unsigned long) base, (unsigned long) size, i,
-				  1);
-		if (err < 0)
-			return err;
-		return len;
-	}
-	return -EINVAL;
-}
-
-static long
-mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
-{
-	int err = 0;
-	mtrr_type type;
-	unsigned long size;
-	struct mtrr_sentry sentry;
-	struct mtrr_gentry gentry;
-	void __user *arg = (void __user *) __arg;
-
-	switch (cmd) {
-	case MTRRIOC_ADD_ENTRY:
-	case MTRRIOC_SET_ENTRY:
-	case MTRRIOC_DEL_ENTRY:
-	case MTRRIOC_KILL_ENTRY:
-	case MTRRIOC_ADD_PAGE_ENTRY:
-	case MTRRIOC_SET_PAGE_ENTRY:
-	case MTRRIOC_DEL_PAGE_ENTRY:
-	case MTRRIOC_KILL_PAGE_ENTRY:
-		if (copy_from_user(&sentry, arg, sizeof sentry))
-			return -EFAULT;
-		break;
-	case MTRRIOC_GET_ENTRY:
-	case MTRRIOC_GET_PAGE_ENTRY:
-		if (copy_from_user(&gentry, arg, sizeof gentry))
-			return -EFAULT;
-		break;
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_ADD_ENTRY:
-	case MTRRIOC32_SET_ENTRY:
-	case MTRRIOC32_DEL_ENTRY:
-	case MTRRIOC32_KILL_ENTRY:
-	case MTRRIOC32_ADD_PAGE_ENTRY:
-	case MTRRIOC32_SET_PAGE_ENTRY:
-	case MTRRIOC32_DEL_PAGE_ENTRY:
-	case MTRRIOC32_KILL_PAGE_ENTRY: {
-		struct mtrr_sentry32 __user *s32 = (struct mtrr_sentry32 __user *)__arg;
-		err = get_user(sentry.base, &s32->base);
-		err |= get_user(sentry.size, &s32->size);
-		err |= get_user(sentry.type, &s32->type);
-		if (err)
-			return err;
-		break;
-	}
-	case MTRRIOC32_GET_ENTRY:
-	case MTRRIOC32_GET_PAGE_ENTRY: {
-		struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)__arg;
-		err = get_user(gentry.regnum, &g32->regnum);
-		err |= get_user(gentry.base, &g32->base);
-		err |= get_user(gentry.size, &g32->size);
-		err |= get_user(gentry.type, &g32->type);
-		if (err)
-			return err;
-		break;
-	}
-#endif
-	}
-
-	switch (cmd) {
-	default:
-		return -ENOTTY;
-	case MTRRIOC_ADD_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_ADD_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err =
-		    mtrr_file_add(sentry.base, sentry.size, sentry.type, 1,
-				  file, 0);
-		break;
-	case MTRRIOC_SET_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_SET_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err = mtrr_add(sentry.base, sentry.size, sentry.type, 0);
-		break;
-	case MTRRIOC_DEL_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_DEL_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err = mtrr_file_del(sentry.base, sentry.size, file, 0);
-		break;
-	case MTRRIOC_KILL_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_KILL_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err = mtrr_del(-1, sentry.base, sentry.size);
-		break;
-	case MTRRIOC_GET_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_GET_ENTRY:
-#endif
-		if (gentry.regnum >= num_var_ranges)
-			return -EINVAL;
-		mtrr_if->get(gentry.regnum, &gentry.base, &size, &type);
-
-		/* Hide entries that go above 4GB */
-		if (gentry.base + size - 1 >= (1UL << (8 * sizeof(gentry.size) - PAGE_SHIFT))
-		    || size >= (1UL << (8 * sizeof(gentry.size) - PAGE_SHIFT)))
-			gentry.base = gentry.size = gentry.type = 0;
-		else {
-			gentry.base <<= PAGE_SHIFT;
-			gentry.size = size << PAGE_SHIFT;
-			gentry.type = type;
-		}
-
-		break;
-	case MTRRIOC_ADD_PAGE_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_ADD_PAGE_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err =
-		    mtrr_file_add(sentry.base, sentry.size, sentry.type, 1,
-				  file, 1);
-		break;
-	case MTRRIOC_SET_PAGE_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_SET_PAGE_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err = mtrr_add_page(sentry.base, sentry.size, sentry.type, 0);
-		break;
-	case MTRRIOC_DEL_PAGE_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_DEL_PAGE_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err = mtrr_file_del(sentry.base, sentry.size, file, 1);
-		break;
-	case MTRRIOC_KILL_PAGE_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_KILL_PAGE_ENTRY:
-#endif
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		err = mtrr_del_page(-1, sentry.base, sentry.size);
-		break;
-	case MTRRIOC_GET_PAGE_ENTRY:
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_GET_PAGE_ENTRY:
-#endif
-		if (gentry.regnum >= num_var_ranges)
-			return -EINVAL;
-		mtrr_if->get(gentry.regnum, &gentry.base, &size, &type);
-		/* Hide entries that would overflow */
-		if (size != (__typeof__(gentry.size))size)
-			gentry.base = gentry.size = gentry.type = 0;
-		else {
-			gentry.size = size;
-			gentry.type = type;
-		}
-		break;
-	}
-
-	if (err)
-		return err;
-
-	switch(cmd) {
-	case MTRRIOC_GET_ENTRY:
-	case MTRRIOC_GET_PAGE_ENTRY:
-		if (copy_to_user(arg, &gentry, sizeof gentry))
-			err = -EFAULT;
-		break;
-#ifdef CONFIG_COMPAT
-	case MTRRIOC32_GET_ENTRY:
-	case MTRRIOC32_GET_PAGE_ENTRY: {
-		struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)__arg;
-		err = put_user(gentry.base, &g32->base);
-		err |= put_user(gentry.size, &g32->size);
-		err |= put_user(gentry.regnum, &g32->regnum);
-		err |= put_user(gentry.type, &g32->type);
-		break;
-	}
-#endif
-	}
-	return err;
-}
-
-static int
-mtrr_close(struct inode *ino, struct file *file)
-{
-	int i, max;
-	unsigned int *fcount = FILE_FCOUNT(file);
-
-	if (fcount != NULL) {
-		max = num_var_ranges;
-		for (i = 0; i < max; ++i) {
-			while (fcount[i] > 0) {
-				mtrr_del(i, 0, 0);
-				--fcount[i];
-			}
-		}
-		kfree(fcount);
-		FILE_FCOUNT(file) = NULL;
-	}
-	return single_release(ino, file);
-}
-
-static int mtrr_seq_show(struct seq_file *seq, void *offset);
-
-static int mtrr_open(struct inode *inode, struct file *file)
-{
-	if (!mtrr_if) 
-		return -EIO;
-	if (!mtrr_if->get) 
-		return -ENXIO; 
-	return single_open(file, mtrr_seq_show, NULL);
-}
-
-static const struct file_operations mtrr_fops = {
-	.owner   = THIS_MODULE,
-	.open	 = mtrr_open, 
-	.read    = seq_read,
-	.llseek  = seq_lseek,
-	.write   = mtrr_write,
-	.unlocked_ioctl = mtrr_ioctl,
-	.compat_ioctl = mtrr_ioctl,
-	.release = mtrr_close,
-};
-
-
-static struct proc_dir_entry *proc_root_mtrr;
-
-
-static int mtrr_seq_show(struct seq_file *seq, void *offset)
-{
-	char factor;
-	int i, max, len;
-	mtrr_type type;
-	unsigned long base, size;
-
-	len = 0;
-	max = num_var_ranges;
-	for (i = 0; i < max; i++) {
-		mtrr_if->get(i, &base, &size, &type);
-		if (size == 0)
-			usage_table[i] = 0;
-		else {
-			if (size < (0x100000 >> PAGE_SHIFT)) {
-				/* less than 1MB */
-				factor = 'K';
-				size <<= PAGE_SHIFT - 10;
-			} else {
-				factor = 'M';
-				size >>= 20 - PAGE_SHIFT;
-			}
-			/* RED-PEN: base can be > 32bit */ 
-			len += seq_printf(seq, 
-				   "reg%02i: base=0x%05lx000 (%4luMB), size=%4lu%cB: %s, count=%d\n",
-			     i, base, base >> (20 - PAGE_SHIFT), size, factor,
-			     mtrr_attrib_to_str(type), usage_table[i]);
-		}
-	}
-	return 0;
-}
-
-static int __init mtrr_if_init(void)
-{
-	struct cpuinfo_x86 *c = &boot_cpu_data;
-
-	if ((!cpu_has(c, X86_FEATURE_MTRR)) &&
-	    (!cpu_has(c, X86_FEATURE_K6_MTRR)) &&
-	    (!cpu_has(c, X86_FEATURE_CYRIX_ARR)) &&
-	    (!cpu_has(c, X86_FEATURE_CENTAUR_MCR)))
-		return -ENODEV;
-
-	proc_root_mtrr =
-	    create_proc_entry("mtrr", S_IWUSR | S_IRUGO, &proc_root);
-	if (proc_root_mtrr) {
-		proc_root_mtrr->owner = THIS_MODULE;
-		proc_root_mtrr->proc_fops = &mtrr_fops;
-	}
-	return 0;
-}
-
-arch_initcall(mtrr_if_init);
-#endif			/*  CONFIG_PROC_FS  */