arch: remove frv port

The Fujitsu FRV kernel port has been around for a long time, but has not
seen regular updates in several years and instead was marked 'Orphaned'
in 2016 by long-time maintainer David Howells.

The SoC product line apparently is apparently still around in the form
of the Socionext Milbeaut image processor, but this one no longer uses
the FRV CPU cores.

This removes all FRV specific files from the kernel.

Link: http://www.socionext.com/en/products/assp/milbeaut/
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 221 deletions

diff --git a/arch/frv/kernel/sysctl.c b/arch/frv/kernel/sysctl.c
deleted file mode 100644
index b54a64971cf1..000000000000
--- a/arch/frv/kernel/sysctl.c
+++ /dev/null
@@ -1,221 +0,0 @@
-/* sysctl.c: implementation of /proc/sys files relating to FRV specifically
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/uaccess.h>
-
-static const char frv_cache_wback[] = "wback";
-static const char frv_cache_wthru[] = "wthru";
-
-static void frv_change_dcache_mode(unsigned long newmode)
-{
-	unsigned long flags, hsr0;
-
-	local_irq_save(flags);
-
-	hsr0 = __get_HSR(0);
-	hsr0 &= ~HSR0_DCE;
-	__set_HSR(0, hsr0);
-
-	asm volatile("	dcef	@(gr0,gr0),#1	\n"
-		     "	membar			\n"
-		     : : : "memory"
-		     );
-
-	hsr0 = (hsr0 & ~HSR0_CBM) | newmode;
-	__set_HSR(0, hsr0);
-	hsr0 |= HSR0_DCE;
-	__set_HSR(0, hsr0);
-
-	local_irq_restore(flags);
-
-	//printk("HSR0 now %08lx\n", hsr0);
-}
-
-/*****************************************************************************/
-/*
- * handle requests to dynamically switch the write caching mode delivered by /proc
- */
-static int procctl_frv_cachemode(struct ctl_table *table, int write,
-				 void __user *buffer, size_t *lenp,
-				 loff_t *ppos)
-{
-	unsigned long hsr0;
-	char buff[8];
-	int len;
-
-	len = *lenp;
-
-	if (write) {
-		/* potential state change */
-		if (len <= 1 || len > sizeof(buff) - 1)
-			return -EINVAL;
-
-		if (copy_from_user(buff, buffer, len) != 0)
-			return -EFAULT;
-
-		if (buff[len - 1] == '\n')
-			buff[len - 1] = '\0';
-		else
-			buff[len] = '\0';
-
-		if (strcmp(buff, frv_cache_wback) == 0) {
-			/* switch dcache into write-back mode */
-			frv_change_dcache_mode(HSR0_CBM_COPY_BACK);
-			return 0;
-		}
-
-		if (strcmp(buff, frv_cache_wthru) == 0) {
-			/* switch dcache into write-through mode */
-			frv_change_dcache_mode(HSR0_CBM_WRITE_THRU);
-			return 0;
-		}
-
-		return -EINVAL;
-	}
-
-	/* read the state */
-	if (*ppos > 0) {
-		*lenp = 0;
-		return 0;
-	}
-
-	hsr0 = __get_HSR(0);
-	switch (hsr0 & HSR0_CBM) {
-	case HSR0_CBM_WRITE_THRU:
-		memcpy(buff, frv_cache_wthru, sizeof(frv_cache_wthru) - 1);
-		buff[sizeof(frv_cache_wthru) - 1] = '\n';
-		len = sizeof(frv_cache_wthru);
-		break;
-	default:
-		memcpy(buff, frv_cache_wback, sizeof(frv_cache_wback) - 1);
-		buff[sizeof(frv_cache_wback) - 1] = '\n';
-		len = sizeof(frv_cache_wback);
-		break;
-	}
-
-	if (len > *lenp)
-		len = *lenp;
-
-	if (copy_to_user(buffer, buff, len) != 0)
-		return -EFAULT;
-
-	*lenp = len;
-	*ppos = len;
-	return 0;
-
-} /* end procctl_frv_cachemode() */
-
-/*****************************************************************************/
-/*
- * permit the mm_struct the nominated process is using have its MMU context ID pinned
- */
-#ifdef CONFIG_MMU
-static int procctl_frv_pin_cxnr(struct ctl_table *table, int write,
-				void __user *buffer, size_t *lenp,
-				loff_t *ppos)
-{
-	pid_t pid;
-	char buff[16], *p;
-	int len;
-
-	len = *lenp;
-
-	if (write) {
-		/* potential state change */
-		if (len <= 1 || len > sizeof(buff) - 1)
-			return -EINVAL;
-
-		if (copy_from_user(buff, buffer, len) != 0)
-			return -EFAULT;
-
-		if (buff[len - 1] == '\n')
-			buff[len - 1] = '\0';
-		else
-			buff[len] = '\0';
-
-		pid = simple_strtoul(buff, &p, 10);
-		if (*p)
-			return -EINVAL;
-
-		return cxn_pin_by_pid(pid);
-	}
-
-	/* read the currently pinned CXN */
-	if (*ppos > 0) {
-		*lenp = 0;
-		return 0;
-	}
-
-	len = snprintf(buff, sizeof(buff), "%d\n", cxn_pinned);
-	if (len > *lenp)
-		len = *lenp;
-
-	if (copy_to_user(buffer, buff, len) != 0)
-		return -EFAULT;
-
-	*lenp = len;
-	*ppos = len;
-	return 0;
-
-} /* end procctl_frv_pin_cxnr() */
-#endif
-
-/*
- * FR-V specific sysctls
- */
-static struct ctl_table frv_table[] =
-{
-	{
-		.procname 	= "cache-mode",
-		.data		= NULL,
-		.maxlen		= 0,
-		.mode		= 0644,
-		.proc_handler	= procctl_frv_cachemode,
-	},
-#ifdef CONFIG_MMU
-	{
-		.procname	= "pin-cxnr",
-		.data		= NULL,
-		.maxlen		= 0,
-		.mode		= 0644,
-		.proc_handler	= procctl_frv_pin_cxnr
-	},
-#endif
-	{}
-};
-
-/*
- * Use a temporary sysctl number. Horrid, but will be cleaned up in 2.6
- * when all the PM interfaces exist nicely.
- */
-static struct ctl_table frv_dir_table[] =
-{
-	{
-		.procname	= "frv",
-		.mode 		= 0555,
-		.child		= frv_table
-	},
-	{}
-};
-
-/*
- * Initialize power interface
- */
-static int __init frv_sysctl_init(void)
-{
-	register_sysctl_table(frv_dir_table);
-	return 0;
-}
-
-__initcall(frv_sysctl_init);