#include <linux/highmem.h> /* pte_offset_map => kmap_atomic */
#include <linux/bitops.h>
#include <linux/scatterlist.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
-#include <asm/sbus.h>
#include <asm/io.h>
#include <asm/io-unit.h>
#include <asm/mxcc.h>
#define IOPERM (IOUPTE_CACHE | IOUPTE_WRITE | IOUPTE_VALID)
#define MKIOPTE(phys) __iopte((((phys)>>4) & IOUPTE_PAGE) | IOPERM)
-void __init
-iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
+static void __init iounit_iommu_init(struct of_device *op)
{
- iopte_t *xpt, *xptend;
struct iounit_struct *iounit;
- struct linux_prom_registers iommu_promregs[PROMREG_MAX];
- struct resource r;
+ iopte_t *xpt, *xptend;
iounit = kzalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
if (!iounit) {
iounit->rotor[1] = IOUNIT_BMAP2_START;
iounit->rotor[2] = IOUNIT_BMAPM_START;
- xpt = NULL;
- if(prom_getproperty(sbi_node, "reg", (void *) iommu_promregs,
- sizeof(iommu_promregs)) != -1) {
- prom_apply_generic_ranges(io_node, 0, iommu_promregs, 3);
- memset(&r, 0, sizeof(r));
- r.flags = iommu_promregs[2].which_io;
- r.start = iommu_promregs[2].phys_addr;
- xpt = (iopte_t *) sbus_ioremap(&r, 0, PAGE_SIZE * 16, "XPT");
+ xpt = of_ioremap(&op->resource[2], 0, PAGE_SIZE * 16, "XPT");
+ if (!xpt) {
+ prom_printf("SUN4D: Cannot map External Page Table.");
+ prom_halt();
}
- if(!xpt) panic("Cannot map External Page Table.");
- sbus->ofdev.dev.archdata.iommu = iounit;
+ op->dev.archdata.iommu = iounit;
iounit->page_table = xpt;
spin_lock_init(&iounit->lock);
iopte_val(*xpt++) = 0;
}
+static int __init iounit_init(void)
+{
+ extern void sun4d_init_sbi_irq(void);
+ struct device_node *dp;
+
+ for_each_node_by_name(dp, "sbi") {
+ struct of_device *op = of_find_device_by_node(dp);
+
+ iounit_iommu_init(op);
+ of_propagate_archdata(op);
+ }
+
+ sun4d_init_sbi_irq();
+
+ return 0;
+}
+
+subsys_initcall(iounit_init);
+
/* One has to hold iounit->lock to call this */
static unsigned long iounit_get_area(struct iounit_struct *iounit, unsigned long vaddr, int size)
{
return vaddr;
}
-static __u32 iounit_get_scsi_one(char *vaddr, unsigned long len, struct sbus_bus *sbus)
+static __u32 iounit_get_scsi_one(struct device *dev, char *vaddr, unsigned long len)
{
+ struct iounit_struct *iounit = dev->archdata.iommu;
unsigned long ret, flags;
- struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
spin_lock_irqsave(&iounit->lock, flags);
ret = iounit_get_area(iounit, (unsigned long)vaddr, len);
return ret;
}
-static void iounit_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iounit_get_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
{
+ struct iounit_struct *iounit = dev->archdata.iommu;
unsigned long flags;
- 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);
while (sz != 0) {
--sz;
- sg->dvma_address = iounit_get_area(iounit, (unsigned long) sg_virt(sg), sg->length);
- sg->dvma_length = sg->length;
+ sg->dma_address = iounit_get_area(iounit, (unsigned long) sg_virt(sg), sg->length);
+ sg->dma_length = sg->length;
sg = sg_next(sg);
}
spin_unlock_irqrestore(&iounit->lock, flags);
}
-static void iounit_release_scsi_one(__u32 vaddr, unsigned long len, struct sbus_bus *sbus)
+static void iounit_release_scsi_one(struct device *dev, __u32 vaddr, unsigned long len)
{
+ struct iounit_struct *iounit = dev->archdata.iommu;
unsigned long flags;
- 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;
spin_unlock_irqrestore(&iounit->lock, flags);
}
-static void iounit_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iounit_release_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
{
+ struct iounit_struct *iounit = dev->archdata.iommu;
unsigned long flags;
unsigned long vaddr, len;
- struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
spin_lock_irqsave(&iounit->lock, flags);
while (sz != 0) {
--sz;
- len = ((sg->dvma_address & ~PAGE_MASK) + sg->length + (PAGE_SIZE-1)) >> PAGE_SHIFT;
- vaddr = (sg->dvma_address - IOUNIT_DMA_BASE) >> PAGE_SHIFT;
+ len = ((sg->dma_address & ~PAGE_MASK) + sg->length + (PAGE_SIZE-1)) >> PAGE_SHIFT;
+ vaddr = (sg->dma_address - IOUNIT_DMA_BASE) >> PAGE_SHIFT;
IOD(("iounit_release %08lx-%08lx\n", (long)vaddr, (long)len+vaddr));
for (len += vaddr; vaddr < len; vaddr++)
clear_bit(vaddr, iounit->bmap);
}
#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;
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;
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 */
}
-
-/* XXX We do not pass sbus device here, bad. */
-static struct page *iounit_translate_dvma(unsigned long addr)
-{
- struct sbus_bus *sbus = sbus_root; /* They are all the same */
- struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
- int i;
- iopte_t *iopte;
-
- i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT);
- iopte = (iopte_t *)(iounit->page_table + i);
- return pfn_to_page(iopte_val(*iopte) >> (PAGE_SHIFT-4)); /* XXX sun4d guru, help */
-}
#endif
static char *iounit_lockarea(char *vaddr, unsigned long len)
#ifdef CONFIG_SBUS
BTFIXUPSET_CALL(mmu_map_dma_area, iounit_map_dma_area, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(mmu_unmap_dma_area, iounit_unmap_dma_area, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(mmu_translate_dvma, iounit_translate_dvma, BTFIXUPCALL_NORM);
#endif
}
-
-__u32 iounit_map_dma_init(struct sbus_bus *sbus, int size)
-{
- int i, j, k, npages;
- unsigned long rotor, scan, limit;
- unsigned long flags;
- __u32 ret;
- struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
-
- npages = (size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
- i = 0x0213;
- spin_lock_irqsave(&iounit->lock, flags);
-next: j = (i & 15);
- rotor = iounit->rotor[j - 1];
- limit = iounit->limit[j];
- scan = rotor;
-nexti: scan = find_next_zero_bit(iounit->bmap, limit, scan);
- if (scan + npages > limit) {
- if (limit != rotor) {
- limit = rotor;
- scan = iounit->limit[j - 1];
- goto nexti;
- }
- i >>= 4;
- if (!(i & 15))
- panic("iounit_map_dma_init: Couldn't find free iopte slots for %d bytes\n", size);
- goto next;
- }
- for (k = 1, scan++; k < npages; k++)
- if (test_bit(scan++, iounit->bmap))
- goto nexti;
- iounit->rotor[j - 1] = (scan < limit) ? scan : iounit->limit[j - 1];
- scan -= npages;
- ret = IOUNIT_DMA_BASE + (scan << PAGE_SHIFT);
- for (k = 0; k < npages; k++, scan++)
- set_bit(scan, iounit->bmap);
- spin_unlock_irqrestore(&iounit->lock, flags);
- return ret;
-}
-
-__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 = sbus->ofdev.dev.archdata.iommu;
-
- iounit->page_table[scan] = MKIOPTE(__pa(((unsigned long)addr) & PAGE_MASK));
- return vaddr + (((unsigned long)addr) & ~PAGE_MASK);
-}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff