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[SPARC32]: Remove iommu from struct sbus_bus and use archdata like sparc64. 

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert Reif 2007-08-10 15:52:06 -07:00 committed by David S. Miller
parent ac07860264
commit 3ac4c949e0
4 changed files with 16 additions and 16 deletions
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1
arch/sparc/kernel/ebus.c
View File

@ -238,6 +238,7 @@ void __init fill_ebus_device(struct device_node *dp, struct linux_ebus_device *d
sd = &dev->ofdev.dev.archdata;
sd->prom_node = dp;
sd->op = &dev->ofdev;
sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;
dev->ofdev.node = dp;
dev->ofdev.dev.parent = &dev->bus->ofdev.dev;

18
arch/sparc/mm/io-unit.c
View File

@ -66,7 +66,7 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
}
if(!xpt) panic("Cannot map External Page Table.");
sbus->iommu = (struct iommu_struct *)iounit;
sbus->ofdev.dev.archdata.iommu = iounit;
iounit->page_table = xpt;
spin_lock_init(&iounit->lock);
@ -127,7 +127,7 @@ nexti: scan = find_next_zero_bit(iounit->bmap, limit, scan);
static __u32 iounit_get_scsi_one(char *vaddr, unsigned long len, struct sbus_bus *sbus)
{
unsigned long ret, flags;
struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
spin_lock_irqsave(&iounit->lock, flags);
ret = iounit_get_area(iounit, (unsigned long)vaddr, len);
@ -138,7 +138,7 @@ static __u32 iounit_get_scsi_one(char *vaddr, unsigned long len, struct sbus_bus
static void iounit_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
{
unsigned long flags;
struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
/* FIXME: Cache some resolved pages - often several sg entries are to the same page */
spin_lock_irqsave(&iounit->lock, flags);
@ -153,7 +153,7 @@ static void iounit_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus
static void iounit_release_scsi_one(__u32 vaddr, unsigned long len, struct sbus_bus *sbus)
{
unsigned long flags;
struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
spin_lock_irqsave(&iounit->lock, flags);
len = ((vaddr & ~PAGE_MASK) + len + (PAGE_SIZE-1)) >> PAGE_SHIFT;
@ -168,7 +168,7 @@ static void iounit_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_
{
unsigned long flags;
unsigned long vaddr, len;
struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
spin_lock_irqsave(&iounit->lock, flags);
while (sz != 0) {
@ -211,7 +211,7 @@ 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 = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
iopte = (iopte_t *)(iounit->page_table + i);
*iopte = MKIOPTE(__pa(page));
@ -235,7 +235,7 @@ static void iounit_unmap_dma_area(unsigned long addr, int len)
static struct page *iounit_translate_dvma(unsigned long addr)
{
struct sbus_bus *sbus = sbus_root; /* They are all the same */
struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
int i;
iopte_t *iopte;
@ -279,7 +279,7 @@ __u32 iounit_map_dma_init(struct sbus_bus *sbus, int size)
unsigned long rotor, scan, limit;
unsigned long flags;
__u32 ret;
struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
npages = (size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
i = 0x0213;
@ -315,7 +315,7 @@ nexti: scan = find_next_zero_bit(iounit->bmap, limit, scan);
__u32 iounit_map_dma_page(__u32 vaddr, void *addr, struct sbus_bus *sbus)
{
int scan = (vaddr - IOUNIT_DMA_BASE) >> PAGE_SHIFT;
struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
iounit->page_table[scan] = MKIOPTE(__pa(((unsigned long)addr) & PAGE_MASK));
return vaddr + (((unsigned long)addr) & ~PAGE_MASK);

12
arch/sparc/mm/iommu.c
View File

@ -132,7 +132,7 @@ iommu_init(int iommund, struct sbus_bus *sbus)
impl, vers, iommu->page_table,
(int)(IOMMU_NPTES*sizeof(iopte_t)), (int)IOMMU_NPTES);
sbus->iommu = iommu;
sbus->ofdev.dev.archdata.iommu = iommu;
}
/* This begs to be btfixup-ed by srmmu. */
@ -166,7 +166,7 @@ static void iommu_flush_iotlb(iopte_t *iopte, unsigned int niopte)
static u32 iommu_get_one(struct page *page, int npages, struct sbus_bus *sbus)
{
struct iommu_struct *iommu = sbus->iommu;
struct iommu_struct *iommu = sbus->ofdev.dev.archdata.iommu;
int ioptex;
iopte_t *iopte, *iopte0;
unsigned int busa, busa0;
@ -291,7 +291,7 @@ static void iommu_get_scsi_sgl_pflush(struct scatterlist *sg, int sz, struct sbu
static void iommu_release_one(u32 busa, int npages, struct sbus_bus *sbus)
{
struct iommu_struct *iommu = sbus->iommu;
struct iommu_struct *iommu = sbus->ofdev.dev.archdata.iommu;
int ioptex;
int i;
@ -334,7 +334,7 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
unsigned long addr, int len)
{
unsigned long page, end;
struct iommu_struct *iommu = sbus_root->iommu;
struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
iopte_t *iopte = iommu->page_table;
iopte_t *first;
int ioptex;
@ -399,7 +399,7 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
static void iommu_unmap_dma_area(unsigned long busa, int len)
{
struct iommu_struct *iommu = sbus_root->iommu;
struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
iopte_t *iopte = iommu->page_table;
unsigned long end;
int ioptex = (busa - iommu->start) >> PAGE_SHIFT;
@ -420,7 +420,7 @@ static void iommu_unmap_dma_area(unsigned long busa, int len)
static struct page *iommu_translate_dvma(unsigned long busa)
{
struct iommu_struct *iommu = sbus_root->iommu;
struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
iopte_t *iopte = iommu->page_table;
iopte += ((busa - iommu->start) >> PAGE_SHIFT);

1
include/asm-sparc/sbus.h
View File

@ -68,7 +68,6 @@ struct sbus_dev {
/* This struct describes the SBus(s) found on this machine. */
struct sbus_bus {
struct of_device ofdev;
void *iommu; /* Opaque IOMMU cookie */
struct sbus_dev *devices; /* Link to devices on this SBus */
struct sbus_bus *next; /* next SBus, if more than one SBus */
int prom_node; /* PROM device tree node for this SBus */