diff options
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index d0b4c2efda90..88627c450a6c 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -30,6 +30,7 @@ #include <linux/memblock.h> #include <linux/sort.h> #include <linux/of_fdt.h> +#include <linux/dma-mapping.h> #include <linux/dma-contiguous.h> #include <asm/sections.h> @@ -59,22 +60,22 @@ static int __init early_initrd(char *p) early_param("initrd", early_initrd); #endif -#define MAX_DMA32_PFN ((4UL * 1024 * 1024 * 1024) >> PAGE_SHIFT) - static void __init zone_sizes_init(unsigned long min, unsigned long max) { struct memblock_region *reg; unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; - unsigned long max_dma32 = min; + unsigned long max_dma = min; memset(zone_size, 0, sizeof(zone_size)); -#ifdef CONFIG_ZONE_DMA32 /* 4GB maximum for 32-bit only capable devices */ - max_dma32 = max(min, min(max, MAX_DMA32_PFN)); - zone_size[ZONE_DMA32] = max_dma32 - min; -#endif - zone_size[ZONE_NORMAL] = max - max_dma32; + if (IS_ENABLED(CONFIG_ZONE_DMA)) { + unsigned long max_dma_phys = + (unsigned long)dma_to_phys(NULL, DMA_BIT_MASK(32) + 1); + max_dma = max(min, min(max, max_dma_phys >> PAGE_SHIFT)); + zone_size[ZONE_DMA] = max_dma - min; + } + zone_size[ZONE_NORMAL] = max - max_dma; memcpy(zhole_size, zone_size, sizeof(zhole_size)); @@ -84,15 +85,15 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) if (start >= max) continue; -#ifdef CONFIG_ZONE_DMA32 - if (start < max_dma32) { - unsigned long dma_end = min(end, max_dma32); - zhole_size[ZONE_DMA32] -= dma_end - start; + + if (IS_ENABLED(CONFIG_ZONE_DMA) && start < max_dma) { + unsigned long dma_end = min(end, max_dma); + zhole_size[ZONE_DMA] -= dma_end - start; } -#endif - if (end > max_dma32) { + + if (end > max_dma) { unsigned long normal_end = min(end, max); - unsigned long normal_start = max(start, max_dma32); + unsigned long normal_start = max(start, max_dma); zhole_size[ZONE_NORMAL] -= normal_end - normal_start; } } @@ -261,8 +262,6 @@ static void __init free_unused_memmap(void) */ void __init mem_init(void) { - arm64_swiotlb_init(); - max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map; #ifndef CONFIG_SPARSEMEM_VMEMMAP |