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sparc32: Make mmu_map_dma_area and mmu_unmap_dma_area take a device pointer.

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This lets us kill this "map it in every IOMMU" crazy code, and also
some of the final references to sbus_root.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-27 18:40:38 -07:00
parent b1387c35be
commit 4b1c5df2af
5 changed files with 19 additions and 23 deletions
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8
arch/sparc/include/asm/dma.h
View File

@ -131,11 +131,11 @@ BTFIXUPDEF_CALL(void, mmu_release_scsi_sgl, struct device *, struct scatterlist
* know if we are mapping RAM or I/O, so it has to be an additional argument
* to a separate mapping function for CPU visible mappings.
*/
BTFIXUPDEF_CALL(int, mmu_map_dma_area, dma_addr_t *, unsigned long, unsigned long, int len)
BTFIXUPDEF_CALL(void, mmu_unmap_dma_area, unsigned long busa, int len)
BTFIXUPDEF_CALL(int, mmu_map_dma_area, struct device *, dma_addr_t *, unsigned long, unsigned long, int len)
BTFIXUPDEF_CALL(void, mmu_unmap_dma_area, struct device *, unsigned long busa, int len)
#define mmu_map_dma_area(pba,va,a,len) BTFIXUP_CALL(mmu_map_dma_area)(pba,va,a,len)
#define mmu_unmap_dma_area(ba,len) BTFIXUP_CALL(mmu_unmap_dma_area)(ba,len)
#define mmu_map_dma_area(dev,pba,va,a,len) BTFIXUP_CALL(mmu_map_dma_area)(dev,pba,va,a,len)
#define mmu_unmap_dma_area(dev,ba,len) BTFIXUP_CALL(mmu_unmap_dma_area)(dev,ba,len)
#endif
#endif /* !(_ASM_SPARC_DMA_H) */

4
arch/sparc/kernel/ioport.c
View File

@ -339,7 +339,7 @@ void *sbus_alloc_consistent(struct device *dev, long len, u32 *dma_addrp)
* XXX That's where sdev would be used. Currently we load
* all iommu tables with the same translations.
*/
if (mmu_map_dma_area(dma_addrp, va, res->start, len_total) != 0)
if (mmu_map_dma_area(dev, dma_addrp, va, res->start, len_total) != 0)
goto err_noiommu;
res->name = op->node->name;
@ -384,7 +384,7 @@ void sbus_free_consistent(struct device *dev, long n, void *p, u32 ba)
/* mmu_inval_dma_area(va, n); */ /* it's consistent, isn't it */
pgv = virt_to_page(p);
mmu_unmap_dma_area(ba, n);
mmu_unmap_dma_area(dev, ba, n);
__free_pages(pgv, get_order(n));
}

14
arch/sparc/mm/io-unit.c
View File

@ -186,12 +186,12 @@ static void iounit_release_scsi_sgl(struct device *dev, struct scatterlist *sg,
}
#ifdef CONFIG_SBUS
static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, int len)
static int iounit_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va, __u32 addr, int len)
{
struct iounit_struct *iounit = dev->archdata.iommu;
unsigned long page, end;
pgprot_t dvma_prot;
iopte_t *iopte;
struct sbus_bus *sbus;
*pba = addr;
@ -213,12 +213,8 @@ static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, in
i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT);
for_each_sbus(sbus) {
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
iopte = (iopte_t *)(iounit->page_table + i);
*iopte = MKIOPTE(__pa(page));
}
iopte = (iopte_t *)(iounit->page_table + i);
*iopte = MKIOPTE(__pa(page));
}
addr += PAGE_SIZE;
va += PAGE_SIZE;
@ -229,7 +225,7 @@ static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, in
return 0;
}
static void iounit_unmap_dma_area(unsigned long addr, int len)
static void iounit_unmap_dma_area(struct device *dev, unsigned long addr, int len)
{
/* XXX Somebody please fill this in */
}

10
arch/sparc/mm/iommu.c
View File

@ -334,11 +334,11 @@ static void iommu_release_scsi_sgl(struct device *dev, struct scatterlist *sg, i
}
#ifdef CONFIG_SBUS
static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
unsigned long addr, int len)
static int iommu_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va,
unsigned long addr, int len)
{
struct iommu_struct *iommu = dev->archdata.iommu;
unsigned long page, end;
struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
iopte_t *iopte = iommu->page_table;
iopte_t *first;
int ioptex;
@ -401,9 +401,9 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
return 0;
}
static void iommu_unmap_dma_area(unsigned long busa, int len)
static void iommu_unmap_dma_area(struct device *dev, unsigned long busa, int len)
{
struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
struct iommu_struct *iommu = dev->archdata.iommu;
iopte_t *iopte = iommu->page_table;
unsigned long end;
int ioptex = (busa - iommu->start) >> PAGE_SHIFT;

6
arch/sparc/mm/sun4c.c
View File

@ -532,8 +532,8 @@ static inline void sun4c_init_ss2_cache_bug(void)
}
/* Addr is always aligned on a page boundary for us already. */
static int sun4c_map_dma_area(dma_addr_t *pba, unsigned long va,
unsigned long addr, int len)
static int sun4c_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va,
unsigned long addr, int len)
{
unsigned long page, end;
@ -555,7 +555,7 @@ static int sun4c_map_dma_area(dma_addr_t *pba, unsigned long va,
return 0;
}
static void sun4c_unmap_dma_area(unsigned long busa, int len)
static void sun4c_unmap_dma_area(struct device *dev, unsigned long busa, int len)
{
/* Fortunately for us, bus_addr == uncached_virt in sun4c. */
/* XXX Implement this */