#include <linux/bootmem.h>
#include <linux/proc_fs.h>
#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/proto.h>
#include <asm/smp.h>
#include <asm/sections.h>
+#include <asm/dma-mapping.h>
+#include <asm/swiotlb.h>
#ifndef Dprintk
#define Dprintk(x...)
#endif
+struct dma_mapping_ops* dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
static unsigned long dma_reserve __initdata;
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
static void __init find_early_table_space(unsigned long end)
{
- unsigned long puds, pmds, tables;
+ unsigned long puds, pmds, tables, start;
puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
tables = round_up(puds * sizeof(pud_t), PAGE_SIZE) +
round_up(pmds * sizeof(pmd_t), PAGE_SIZE);
- table_start = find_e820_area(0x8000, __pa_symbol(&_text), tables);
+ /* RED-PEN putting page tables only on node 0 could
+ cause a hotspot and fill up ZONE_DMA. The page tables
+ need roughly 0.5KB per GB. */
+ start = 0x8000;
+ table_start = find_e820_area(start, end, tables);
if (table_start == -1UL)
panic("Cannot find space for the kernel page tables");
long codesize, reservedpages, datasize, initsize;
#ifdef CONFIG_SWIOTLB
- if (!iommu_aperture &&
- (end_pfn >= 0xffffffff>>PAGE_SHIFT || force_iommu))
- swiotlb = 1;
- if (swiotlb)
- swiotlb_init();
+ pci_swiotlb_init();
#endif
+ no_iommu_init();
/* How many end-of-memory variables you have, grandma! */
max_low_pfn = end_pfn;