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ia64: use generic swiotlb_ops

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These are identical to the ia64 ops, and would also support CMA
if enabled on ia64.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Christoph Hellwig 2017-12-24 15:10:07 +01:00
parent d5c23ebf1b
commit 543cea9acc
4 changed files with 13 additions and 40 deletions
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5
arch/ia64/Kconfig
View File

@ -146,6 +146,7 @@ config IA64_GENERIC
bool "generic"
select NUMA
select ACPI_NUMA
select DMA_DIRECT_OPS
select SWIOTLB
select PCI_MSI
help
@ -166,6 +167,7 @@ config IA64_GENERIC
config IA64_DIG
bool "DIG-compliant"
select DMA_DIRECT_OPS
select SWIOTLB
config IA64_DIG_VTD
@ -181,6 +183,7 @@ config IA64_HP_ZX1
config IA64_HP_ZX1_SWIOTLB
bool "HP-zx1/sx1000 with software I/O TLB"
select DMA_DIRECT_OPS
select SWIOTLB
help
Build a kernel that runs on HP zx1 and sx1000 systems even when they
@ -204,6 +207,7 @@ config IA64_SGI_UV
bool "SGI-UV"
select NUMA
select ACPI_NUMA
select DMA_DIRECT_OPS
select SWIOTLB
help
Selecting this option will optimize the kernel for use on UV based
@ -214,6 +218,7 @@ config IA64_SGI_UV
config IA64_HP_SIM
bool "Ski-simulator"
select DMA_DIRECT_OPS
select SWIOTLB
depends on !PM

4
arch/ia64/hp/common/hwsw_iommu.c
View File

@ -19,7 +19,7 @@
#include <linux/export.h>
#include <asm/machvec.h>
extern const struct dma_map_ops sba_dma_ops, ia64_swiotlb_dma_ops;
extern const struct dma_map_ops sba_dma_ops;
/* swiotlb declarations & definitions: */
extern int swiotlb_late_init_with_default_size (size_t size);
@ -38,7 +38,7 @@ static inline int use_swiotlb(struct device *dev)
const struct dma_map_ops *hwsw_dma_get_ops(struct device *dev)
{
if (use_swiotlb(dev))
return &ia64_swiotlb_dma_ops;
return &swiotlb_dma_ops;
return &sba_dma_ops;
}
EXPORT_SYMBOL(hwsw_dma_get_ops);

6
arch/ia64/hp/common/sba_iommu.c
View File

@ -2096,7 +2096,7 @@ static int __init acpi_sba_ioc_init_acpi(void)
/* This has to run before acpi_scan_init(). */
arch_initcall(acpi_sba_ioc_init_acpi);
extern const struct dma_map_ops ia64_swiotlb_dma_ops;
extern const struct dma_map_ops swiotlb_dma_ops;
static int __init
sba_init(void)
@ -2111,7 +2111,7 @@ sba_init(void)
* a successful kdump kernel boot is to use the swiotlb.
*/
if (is_kdump_kernel()) {
dma_ops = &ia64_swiotlb_dma_ops;
dma_ops = &swiotlb_dma_ops;
if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
panic("Unable to initialize software I/O TLB:"
" Try machvec=dig boot option");
@ -2133,7 +2133,7 @@ sba_init(void)
* If we didn't find something sba_iommu can claim, we
* need to setup the swiotlb and switch to the dig machvec.
*/
dma_ops = &ia64_swiotlb_dma_ops;
dma_ops = &swiotlb_dma_ops;
if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
panic("Unable to find SBA IOMMU or initialize "
"software I/O TLB: Try machvec=dig boot option");

38
arch/ia64/kernel/pci-swiotlb.c
View File

@ -6,8 +6,7 @@
#include <linux/cache.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <asm/swiotlb.h>
#include <linux/swiotlb.h>
#include <asm/dma.h>
#include <asm/iommu.h>
#include <asm/machvec.h>
@ -15,40 +14,9 @@
int swiotlb __read_mostly;
EXPORT_SYMBOL(swiotlb);
static void *ia64_swiotlb_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
unsigned long attrs)
{
if (dev->coherent_dma_mask != DMA_BIT_MASK(64))
gfp |= GFP_DMA32;
return swiotlb_alloc_coherent(dev, size, dma_handle, gfp);
}
static void ia64_swiotlb_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_addr,
unsigned long attrs)
{
swiotlb_free_coherent(dev, size, vaddr, dma_addr);
}
const struct dma_map_ops ia64_swiotlb_dma_ops = {
.alloc = ia64_swiotlb_alloc_coherent,
.free = ia64_swiotlb_free_coherent,
.map_page = swiotlb_map_page,
.unmap_page = swiotlb_unmap_page,
.map_sg = swiotlb_map_sg_attrs,
.unmap_sg = swiotlb_unmap_sg_attrs,
.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
.sync_single_for_device = swiotlb_sync_single_for_device,
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
.sync_sg_for_device = swiotlb_sync_sg_for_device,
.dma_supported = swiotlb_dma_supported,
.mapping_error = swiotlb_dma_mapping_error,
};
void __init swiotlb_dma_init(void)
{
dma_ops = &ia64_swiotlb_dma_ops;
dma_ops = &swiotlb_dma_ops;
swiotlb_init(1);
}
@ -60,7 +28,7 @@ void __init pci_swiotlb_init(void)
printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
machvec_init("dig");
swiotlb_init(1);
dma_ops = &ia64_swiotlb_dma_ops;
dma_ops = &swiotlb_dma_ops;
#else
panic("Unable to find Intel IOMMU");
#endif