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Date: Fri, 09 Oct 2015 18:16:46 -0400
From: Dan Williams <dan.j.williams@...el.com>
To: linux-kernel@...r.kernel.org
Cc: linux-arch@...r.kernel.org, Joerg Roedel <jroedel@...e.de>,
David Woodhouse <dwmw2@...radead.org>,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 13/20] intel-iommu: switch from ioremap_cache to memremap
In preparation for deprecating ioremap_cache() convert its usage in
intel-iommu to memremap. This also eliminates the mishandling of the
__iomem annotation in the implementation.
Cc: David Woodhouse <dwmw2@...radead.org>
Acked-by: Joerg Roedel <jroedel@...e.de>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
drivers/iommu/intel-iommu.c | 20 +++++++++++---------
drivers/iommu/intel_irq_remapping.c | 8 ++++----
2 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 041bc1810a86..a089177db372 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -34,6 +34,7 @@
#include <linux/mempool.h>
#include <linux/memory.h>
#include <linux/timer.h>
+#include <linux/io.h>
#include <linux/iova.h>
#include <linux/iommu.h>
#include <linux/intel-iommu.h>
@@ -2807,18 +2808,18 @@ static void intel_iommu_init_qi(struct intel_iommu *iommu)
}
static int copy_context_table(struct intel_iommu *iommu,
- struct root_entry __iomem *old_re,
+ struct root_entry *old_re,
struct context_entry **tbl,
int bus, bool ext)
{
int tbl_idx, pos = 0, idx, devfn, ret = 0, did;
- struct context_entry __iomem *old_ce = NULL;
struct context_entry *new_ce = NULL, ce;
+ struct context_entry *old_ce = NULL;
struct root_entry re;
phys_addr_t old_ce_phys;
tbl_idx = ext ? bus * 2 : bus;
- memcpy_fromio(&re, old_re, sizeof(re));
+ memcpy(&re, old_re, sizeof(re));
for (devfn = 0; devfn < 256; devfn++) {
/* First calculate the correct index */
@@ -2853,7 +2854,8 @@ static int copy_context_table(struct intel_iommu *iommu,
}
ret = -ENOMEM;
- old_ce = ioremap_cache(old_ce_phys, PAGE_SIZE);
+ old_ce = memremap(old_ce_phys, PAGE_SIZE,
+ MEMREMAP_WB);
if (!old_ce)
goto out;
@@ -2865,7 +2867,7 @@ static int copy_context_table(struct intel_iommu *iommu,
}
/* Now copy the context entry */
- memcpy_fromio(&ce, old_ce + idx, sizeof(ce));
+ memcpy(&ce, old_ce + idx, sizeof(ce));
if (!__context_present(&ce))
continue;
@@ -2901,7 +2903,7 @@ static int copy_context_table(struct intel_iommu *iommu,
__iommu_flush_cache(iommu, new_ce, VTD_PAGE_SIZE);
out_unmap:
- iounmap(old_ce);
+ memunmap(old_ce);
out:
return ret;
@@ -2909,8 +2911,8 @@ out:
static int copy_translation_tables(struct intel_iommu *iommu)
{
- struct root_entry __iomem *old_rt;
struct context_entry **ctxt_tbls;
+ struct root_entry *old_rt;
phys_addr_t old_rt_phys;
int ctxt_table_entries;
unsigned long flags;
@@ -2935,7 +2937,7 @@ static int copy_translation_tables(struct intel_iommu *iommu)
if (!old_rt_phys)
return -EINVAL;
- old_rt = ioremap_cache(old_rt_phys, PAGE_SIZE);
+ old_rt = memremap(old_rt_phys, PAGE_SIZE, MEMREMAP_WB);
if (!old_rt)
return -ENOMEM;
@@ -2984,7 +2986,7 @@ static int copy_translation_tables(struct intel_iommu *iommu)
ret = 0;
out_unmap:
- iounmap(old_rt);
+ memunmap(old_rt);
return ret;
}
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index 9ec4e0d94ffd..bdc52cc6ed23 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -384,7 +384,7 @@ static int set_msi_sid(struct irte *irte, struct pci_dev *dev)
static int iommu_load_old_irte(struct intel_iommu *iommu)
{
- struct irte __iomem *old_ir_table;
+ struct irte *old_ir_table;
phys_addr_t irt_phys;
unsigned int i;
size_t size;
@@ -408,12 +408,12 @@ static int iommu_load_old_irte(struct intel_iommu *iommu)
size = INTR_REMAP_TABLE_ENTRIES*sizeof(struct irte);
/* Map the old IR table */
- old_ir_table = ioremap_cache(irt_phys, size);
+ old_ir_table = memremap(irt_phys, size, MEMREMAP_WB);
if (!old_ir_table)
return -ENOMEM;
/* Copy data over */
- memcpy_fromio(iommu->ir_table->base, old_ir_table, size);
+ memcpy(iommu->ir_table->base, old_ir_table, size);
__iommu_flush_cache(iommu, iommu->ir_table->base, size);
@@ -426,7 +426,7 @@ static int iommu_load_old_irte(struct intel_iommu *iommu)
bitmap_set(iommu->ir_table->bitmap, i, 1);
}
- iounmap(old_ir_table);
+ memunmap(old_ir_table);
return 0;
}
--
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