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-rw-r--r--arch/c6x/mm/Makefile6
-rw-r--r--arch/c6x/mm/dma-coherent.c173
-rw-r--r--arch/c6x/mm/init.c65
3 files changed, 0 insertions, 244 deletions
diff --git a/arch/c6x/mm/Makefile b/arch/c6x/mm/Makefile
deleted file mode 100644
index 19d05e972dd1..000000000000
--- a/arch/c6x/mm/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for the linux c6x-specific parts of the memory manager.
-#
-
-obj-y := init.o dma-coherent.o
diff --git a/arch/c6x/mm/dma-coherent.c b/arch/c6x/mm/dma-coherent.c
deleted file mode 100644
index 03df07a831fc..000000000000
--- a/arch/c6x/mm/dma-coherent.c
+++ /dev/null
@@ -1,173 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Port on Texas Instruments TMS320C6x architecture
- *
- * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
- * Author: Aurelien Jacquiot <aurelien.jacquiot@ti.com>
- *
- * DMA uncached mapping support.
- *
- * Using code pulled from ARM
- * Copyright (C) 2000-2004 Russell King
- */
-#include <linux/slab.h>
-#include <linux/bitmap.h>
-#include <linux/bitops.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/dma-map-ops.h>
-#include <linux/memblock.h>
-
-#include <asm/cacheflush.h>
-#include <asm/page.h>
-#include <asm/setup.h>
-
-/*
- * DMA coherent memory management, can be redefined using the memdma=
- * kernel command line
- */
-
-/* none by default */
-static phys_addr_t dma_base;
-static u32 dma_size;
-static u32 dma_pages;
-
-static unsigned long *dma_bitmap;
-
-/* bitmap lock */
-static DEFINE_SPINLOCK(dma_lock);
-
-/*
- * Return a DMA coherent and contiguous memory chunk from the DMA memory
- */
-static inline u32 __alloc_dma_pages(int order)
-{
- unsigned long flags;
- u32 pos;
-
- spin_lock_irqsave(&dma_lock, flags);
- pos = bitmap_find_free_region(dma_bitmap, dma_pages, order);
- spin_unlock_irqrestore(&dma_lock, flags);
-
- return dma_base + (pos << PAGE_SHIFT);
-}
-
-static void __free_dma_pages(u32 addr, int order)
-{
- unsigned long flags;
- u32 pos = (addr - dma_base) >> PAGE_SHIFT;
-
- if (addr < dma_base || (pos + (1 << order)) >= dma_pages) {
- printk(KERN_ERR "%s: freeing outside range.\n", __func__);
- BUG();
- }
-
- spin_lock_irqsave(&dma_lock, flags);
- bitmap_release_region(dma_bitmap, pos, order);
- spin_unlock_irqrestore(&dma_lock, flags);
-}
-
-/*
- * Allocate DMA coherent memory space and return both the kernel
- * virtual and DMA address for that space.
- */
-void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
- gfp_t gfp, unsigned long attrs)
-{
- void *ret;
- u32 paddr;
- int order;
-
- if (!dma_size || !size)
- return NULL;
-
- order = get_count_order(((size - 1) >> PAGE_SHIFT) + 1);
-
- paddr = __alloc_dma_pages(order);
-
- if (handle)
- *handle = paddr;
-
- if (!paddr)
- return NULL;
-
- ret = phys_to_virt(paddr);
- memset(ret, 0, 1 << order);
- return ret;
-}
-
-/*
- * Free DMA coherent memory as defined by the above mapping.
- */
-void arch_dma_free(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle, unsigned long attrs)
-{
- int order;
-
- if (!dma_size || !size)
- return;
-
- order = get_count_order(((size - 1) >> PAGE_SHIFT) + 1);
-
- __free_dma_pages(virt_to_phys(vaddr), order);
-}
-
-/*
- * Initialise the coherent DMA memory allocator using the given uncached region.
- */
-void __init coherent_mem_init(phys_addr_t start, u32 size)
-{
- if (!size)
- return;
-
- printk(KERN_INFO
- "Coherent memory (DMA) region start=0x%x size=0x%x\n",
- start, size);
-
- dma_base = start;
- dma_size = size;
-
- /* allocate bitmap */
- dma_pages = dma_size >> PAGE_SHIFT;
- if (dma_size & (PAGE_SIZE - 1))
- ++dma_pages;
-
- dma_bitmap = memblock_alloc(BITS_TO_LONGS(dma_pages) * sizeof(long),
- sizeof(long));
- if (!dma_bitmap)
- panic("%s: Failed to allocate %zu bytes align=0x%zx\n",
- __func__, BITS_TO_LONGS(dma_pages) * sizeof(long),
- sizeof(long));
-}
-
-static void c6x_dma_sync(phys_addr_t paddr, size_t size,
- enum dma_data_direction dir)
-{
- BUG_ON(!valid_dma_direction(dir));
-
- switch (dir) {
- case DMA_FROM_DEVICE:
- L2_cache_block_invalidate(paddr, paddr + size);
- break;
- case DMA_TO_DEVICE:
- L2_cache_block_writeback(paddr, paddr + size);
- break;
- case DMA_BIDIRECTIONAL:
- L2_cache_block_writeback_invalidate(paddr, paddr + size);
- break;
- default:
- break;
- }
-}
-
-void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
- enum dma_data_direction dir)
-{
- return c6x_dma_sync(paddr, size, dir);
-}
-
-void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
- enum dma_data_direction dir)
-{
- return c6x_dma_sync(paddr, size, dir);
-}
diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c
deleted file mode 100644
index a97e51a3e26d..000000000000
--- a/arch/c6x/mm/init.c
+++ /dev/null
@@ -1,65 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Port on Texas Instruments TMS320C6x architecture
- *
- * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
- * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
- */
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/module.h>
-#include <linux/memblock.h>
-#ifdef CONFIG_BLK_DEV_RAM
-#include <linux/blkdev.h>
-#endif
-#include <linux/initrd.h>
-
-#include <asm/sections.h>
-#include <linux/uaccess.h>
-
-/*
- * ZERO_PAGE is a special page that is used for zero-initialized
- * data and COW.
- */
-unsigned long empty_zero_page;
-EXPORT_SYMBOL(empty_zero_page);
-
-/*
- * paging_init() continues the virtual memory environment setup which
- * was begun by the code in arch/head.S.
- * The parameters are pointers to where to stick the starting and ending
- * addresses of available kernel virtual memory.
- */
-void __init paging_init(void)
-{
- struct pglist_data *pgdat = NODE_DATA(0);
- unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, };
-
- empty_zero_page = (unsigned long) memblock_alloc(PAGE_SIZE,
- PAGE_SIZE);
- if (!empty_zero_page)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, PAGE_SIZE, PAGE_SIZE);
-
- /*
- * Set up user data space
- */
- set_fs(KERNEL_DS);
-
- /*
- * Define zones
- */
- max_zone_pfn[ZONE_NORMAL] = memory_end >> PAGE_SHIFT;
-
- free_area_init(max_zone_pfn);
-}
-
-void __init mem_init(void)
-{
- high_memory = (void *)(memory_end & PAGE_MASK);
-
- /* this will put all memory onto the freelists */
- memblock_free_all();
-
- mem_init_print_info(NULL);
-}
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