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-rw-r--r--arch/x86/kernel/pci-dma_64.c49
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index 8bc1e185e557..375cb2bc45be 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -8,8 +8,6 @@
8#include <linux/pci.h> 8#include <linux/pci.h>
9#include <linux/module.h> 9#include <linux/module.h>
10#include <linux/dmar.h> 10#include <linux/dmar.h>
11#include <linux/bootmem.h>
12#include <asm/proto.h>
13#include <asm/io.h> 11#include <asm/io.h>
14#include <asm/gart.h> 12#include <asm/gart.h>
15#include <asm/calgary.h> 13#include <asm/calgary.h>
@@ -288,55 +286,8 @@ static __init int iommu_setup(char *p)
288} 286}
289early_param("iommu", iommu_setup); 287early_param("iommu", iommu_setup);
290 288
291static __initdata void *dma32_bootmem_ptr;
292static unsigned long dma32_bootmem_size __initdata = (128ULL<<20);
293
294static int __init parse_dma32_size_opt(char *p)
295{
296 if (!p)
297 return -EINVAL;
298 dma32_bootmem_size = memparse(p, &p);
299 return 0;
300}
301early_param("dma32_size", parse_dma32_size_opt);
302
303void __init dma32_reserve_bootmem(void)
304{
305 unsigned long size, align;
306 if (end_pfn <= MAX_DMA32_PFN)
307 return;
308
309 align = 64ULL<<20;
310 size = round_up(dma32_bootmem_size, align);
311 dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align,
312 __pa(MAX_DMA_ADDRESS));
313 if (dma32_bootmem_ptr)
314 dma32_bootmem_size = size;
315 else
316 dma32_bootmem_size = 0;
317}
318static void __init dma32_free_bootmem(void)
319{
320 int node;
321
322 if (end_pfn <= MAX_DMA32_PFN)
323 return;
324
325 if (!dma32_bootmem_ptr)
326 return;
327
328 for_each_online_node(node)
329 free_bootmem_node(NODE_DATA(node), __pa(dma32_bootmem_ptr),
330 dma32_bootmem_size);
331
332 dma32_bootmem_ptr = NULL;
333 dma32_bootmem_size = 0;
334}
335
336void __init pci_iommu_alloc(void) 289void __init pci_iommu_alloc(void)
337{ 290{
338 /* free the range so iommu could get some range less than 4G */
339 dma32_free_bootmem();
340 /* 291 /*
341 * The order of these functions is important for 292 * The order of these functions is important for
342 * fall-back/fail-over reasons 293 * fall-back/fail-over reasons