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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
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/* linux/arch/arm/plat-s5p/dev-mfc.c
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*
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* Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
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*
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* Base S5P MFC resource and device definitions
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/memblock.h>
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#include <linux/ioport.h>
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#include <mach/map.h>
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#include <plat/devs.h>
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#include <plat/irqs.h>
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#include <plat/mfc.h>
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struct s5p_mfc_reserved_mem {
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phys_addr_t base;
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unsigned long size;
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struct device *dev;
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};
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static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata;
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void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize,
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phys_addr_t lbase, unsigned int lsize)
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{
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int i;
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s5p_mfc_mem[0].dev = &s5p_device_mfc_r.dev;
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s5p_mfc_mem[0].base = rbase;
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s5p_mfc_mem[0].size = rsize;
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s5p_mfc_mem[1].dev = &s5p_device_mfc_l.dev;
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s5p_mfc_mem[1].base = lbase;
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s5p_mfc_mem[1].size = lsize;
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for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
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struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
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if (memblock_remove(area->base, area->size)) {
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printk(KERN_ERR "Failed to reserve memory for MFC device (%ld bytes at 0x%08lx)\n",
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area->size, (unsigned long) area->base);
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area->base = 0;
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}
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}
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}
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static int __init s5p_mfc_memory_init(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
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struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
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if (!area->base)
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continue;
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if (dma_declare_coherent_memory(area->dev, area->base,
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area->base, area->size,
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DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0)
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printk(KERN_ERR "Failed to declare coherent memory for MFC device (%ld bytes at 0x%08lx)\n",
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area->size, (unsigned long) area->base);
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}
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return 0;
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}
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device_initcall(s5p_mfc_memory_init);
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