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, 176 deletions

diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c
deleted file mode 100644
index 4a96de7f0af4..000000000000
--- a/arch/frv/mb93090-mb00/pci-dma-nommu.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/* pci-dma-nommu.c: Dynamic DMA mapping support for the FRV
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Woodhouse (dwmw2@infradead.org)
- *
- * 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/types.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/dma-mapping.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <asm/io.h>
-
-#if 1
-#define DMA_SRAM_START	dma_coherent_mem_start
-#define DMA_SRAM_END	dma_coherent_mem_end
-#else // Use video RAM on Matrox
-#define DMA_SRAM_START	0xe8900000
-#define DMA_SRAM_END	0xe8a00000
-#endif
-
-struct dma_alloc_record {
-	struct list_head	list;
-	unsigned long		ofs;
-	unsigned long		len;
-};
-
-static DEFINE_SPINLOCK(dma_alloc_lock);
-static LIST_HEAD(dma_alloc_list);
-
-static void *frv_dma_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle,
-		gfp_t gfp, unsigned long attrs)
-{
-	struct dma_alloc_record *new;
-	struct list_head *this = &dma_alloc_list;
-	unsigned long flags;
-	unsigned long start = DMA_SRAM_START;
-	unsigned long end;
-
-	if (!DMA_SRAM_START) {
-		printk("%s called without any DMA area reserved!\n", __func__);
-		return NULL;
-	}
-
-	new = kmalloc(sizeof (*new), GFP_ATOMIC);
-	if (!new)
-		return NULL;
-
-	/* Round up to a reasonable alignment */
-	new->len = (size + 31) & ~31;
-
-	spin_lock_irqsave(&dma_alloc_lock, flags);
-
-	list_for_each (this, &dma_alloc_list) {
-		struct dma_alloc_record *this_r = list_entry(this, struct dma_alloc_record, list);
-		end = this_r->ofs;
-
-		if (end - start >= size)
-			goto gotone;
-
-		start = this_r->ofs + this_r->len;
-	}
-	/* Reached end of list. */
-	end = DMA_SRAM_END;
-	this = &dma_alloc_list;
-
-	if (end - start >= size) {
-	gotone:
-		new->ofs = start;
-		list_add_tail(&new->list, this);
-		spin_unlock_irqrestore(&dma_alloc_lock, flags);
-
-		*dma_handle = start;
-		return (void *)start;
-	}
-
-	kfree(new);
-	spin_unlock_irqrestore(&dma_alloc_lock, flags);
-	return NULL;
-}
-
-static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr,
-		dma_addr_t dma_handle, unsigned long attrs)
-{
-	struct dma_alloc_record *rec;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dma_alloc_lock, flags);
-
-	list_for_each_entry(rec, &dma_alloc_list, list) {
-		if (rec->ofs == dma_handle) {
-			list_del(&rec->list);
-			kfree(rec);
-			spin_unlock_irqrestore(&dma_alloc_lock, flags);
-			return;
-		}
-	}
-	spin_unlock_irqrestore(&dma_alloc_lock, flags);
-	BUG();
-}
-
-static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist,
-		int nents, enum dma_data_direction direction,
-		unsigned long attrs)
-{
-	struct scatterlist *sg;
-	int i;
-
-	BUG_ON(direction == DMA_NONE);
-
-	if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
-		return nents;
-
-	for_each_sg(sglist, sg, nents, i) {
-		frv_cache_wback_inv(sg_dma_address(sg),
-				    sg_dma_address(sg) + sg_dma_len(sg));
-	}
-
-	return nents;
-}
-
-static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page,
-		unsigned long offset, size_t size,
-		enum dma_data_direction direction, unsigned long attrs)
-{
-	BUG_ON(direction == DMA_NONE);
-
-	if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
-		flush_dcache_page(page);
-
-	return (dma_addr_t) page_to_phys(page) + offset;
-}
-
-static void frv_dma_sync_single_for_device(struct device *dev,
-		dma_addr_t dma_handle, size_t size,
-		enum dma_data_direction direction)
-{
-	flush_write_buffers();
-}
-
-static void frv_dma_sync_sg_for_device(struct device *dev,
-		struct scatterlist *sg, int nelems,
-		enum dma_data_direction direction)
-{
-	flush_write_buffers();
-}
-
-
-static int frv_dma_supported(struct device *dev, u64 mask)
-{
-        /*
-         * we fall back to GFP_DMA when the mask isn't all 1s,
-         * so we can't guarantee allocations that must be
-         * within a tighter range than GFP_DMA..
-         */
-        if (mask < 0x00ffffff)
-                return 0;
-	return 1;
-}
-
-const struct dma_map_ops frv_dma_ops = {
-	.alloc			= frv_dma_alloc,
-	.free			= frv_dma_free,
-	.map_page		= frv_dma_map_page,
-	.map_sg			= frv_dma_map_sg,
-	.sync_single_for_device	= frv_dma_sync_single_for_device,
-	.sync_sg_for_device	= frv_dma_sync_sg_for_device,
-	.dma_supported		= frv_dma_supported,
-};
-EXPORT_SYMBOL(frv_dma_ops);