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path: root/arch/x86/kernel/pci-calgary_64.c
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Diffstat (limited to 'arch/x86/kernel/pci-calgary_64.c')
-rw-r--r--arch/x86/kernel/pci-calgary_64.c38
1 files changed, 23 insertions, 15 deletions
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 5d400ba1349d..5286a4a92cf7 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -50,6 +50,8 @@
#include <asm/x86_init.h>
#include <asm/iommu_table.h>
+#define CALGARY_MAPPING_ERROR 0
+
#ifdef CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT
int use_calgary __read_mostly = 1;
#else
@@ -252,7 +254,7 @@ static unsigned long iommu_range_alloc(struct device *dev,
if (panic_on_overflow)
panic("Calgary: fix the allocator.\n");
else
- return DMA_ERROR_CODE;
+ return CALGARY_MAPPING_ERROR;
}
}
@@ -272,10 +274,10 @@ static dma_addr_t iommu_alloc(struct device *dev, struct iommu_table *tbl,
entry = iommu_range_alloc(dev, tbl, npages);
- if (unlikely(entry == DMA_ERROR_CODE)) {
+ if (unlikely(entry == CALGARY_MAPPING_ERROR)) {
pr_warn("failed to allocate %u pages in iommu %p\n",
npages, tbl);
- return DMA_ERROR_CODE;
+ return CALGARY_MAPPING_ERROR;
}
/* set the return dma address */
@@ -295,8 +297,8 @@ static void iommu_free(struct iommu_table *tbl, dma_addr_t dma_addr,
unsigned long flags;
/* were we called with bad_dma_address? */
- badend = DMA_ERROR_CODE + (EMERGENCY_PAGES * PAGE_SIZE);
- if (unlikely((dma_addr >= DMA_ERROR_CODE) && (dma_addr < badend))) {
+ badend = CALGARY_MAPPING_ERROR + (EMERGENCY_PAGES * PAGE_SIZE);
+ if (unlikely(dma_addr < badend)) {
WARN(1, KERN_ERR "Calgary: driver tried unmapping bad DMA "
"address 0x%Lx\n", dma_addr);
return;
@@ -380,7 +382,7 @@ static int calgary_map_sg(struct device *dev, struct scatterlist *sg,
npages = iommu_num_pages(vaddr, s->length, PAGE_SIZE);
entry = iommu_range_alloc(dev, tbl, npages);
- if (entry == DMA_ERROR_CODE) {
+ if (entry == CALGARY_MAPPING_ERROR) {
/* makes sure unmap knows to stop */
s->dma_length = 0;
goto error;
@@ -398,7 +400,7 @@ static int calgary_map_sg(struct device *dev, struct scatterlist *sg,
error:
calgary_unmap_sg(dev, sg, nelems, dir, 0);
for_each_sg(sg, s, nelems, i) {
- sg->dma_address = DMA_ERROR_CODE;
+ sg->dma_address = CALGARY_MAPPING_ERROR;
sg->dma_length = 0;
}
return 0;
@@ -453,7 +455,7 @@ static void* calgary_alloc_coherent(struct device *dev, size_t size,
/* set up tces to cover the allocated range */
mapping = iommu_alloc(dev, tbl, ret, npages, DMA_BIDIRECTIONAL);
- if (mapping == DMA_ERROR_CODE)
+ if (mapping == CALGARY_MAPPING_ERROR)
goto free;
*dma_handle = mapping;
return ret;
@@ -478,13 +480,20 @@ static void calgary_free_coherent(struct device *dev, size_t size,
free_pages((unsigned long)vaddr, get_order(size));
}
-static struct dma_map_ops calgary_dma_ops = {
+static int calgary_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ return dma_addr == CALGARY_MAPPING_ERROR;
+}
+
+static const struct dma_map_ops calgary_dma_ops = {
.alloc = calgary_alloc_coherent,
.free = calgary_free_coherent,
.map_sg = calgary_map_sg,
.unmap_sg = calgary_unmap_sg,
.map_page = calgary_map_page,
.unmap_page = calgary_unmap_page,
+ .mapping_error = calgary_mapping_error,
+ .dma_supported = x86_dma_supported,
};
static inline void __iomem * busno_to_bbar(unsigned char num)
@@ -732,7 +741,7 @@ static void __init calgary_reserve_regions(struct pci_dev *dev)
struct iommu_table *tbl = pci_iommu(dev->bus);
/* reserve EMERGENCY_PAGES from bad_dma_address and up */
- iommu_range_reserve(tbl, DMA_ERROR_CODE, EMERGENCY_PAGES);
+ iommu_range_reserve(tbl, CALGARY_MAPPING_ERROR, EMERGENCY_PAGES);
/* avoid the BIOS/VGA first 640KB-1MB region */
/* for CalIOC2 - avoid the entire first MB */
@@ -1007,9 +1016,8 @@ static void __init calgary_enable_translation(struct pci_dev *dev)
writel(cpu_to_be32(val32), target);
readl(target); /* flush */
- init_timer(&tbl->watchdog_timer);
- tbl->watchdog_timer.function = &calgary_watchdog;
- tbl->watchdog_timer.data = (unsigned long)dev;
+ setup_timer(&tbl->watchdog_timer, &calgary_watchdog,
+ (unsigned long)dev);
mod_timer(&tbl->watchdog_timer, jiffies);
}
@@ -1177,7 +1185,7 @@ static int __init calgary_init(void)
tbl = find_iommu_table(&dev->dev);
if (translation_enabled(tbl))
- dev->dev.archdata.dma_ops = &calgary_dma_ops;
+ dev->dev.dma_ops = &calgary_dma_ops;
}
return ret;
@@ -1201,7 +1209,7 @@ error:
calgary_disable_translation(dev);
calgary_free_bus(dev);
pci_dev_put(dev); /* Undo calgary_init_one()'s pci_dev_get() */
- dev->dev.archdata.dma_ops = NULL;
+ dev->dev.dma_ops = NULL;
} while (1);
return ret;