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parisc/agp: Use 64-bit LE values in SBA IOMMU PDIR table

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The PDIR table of the System Bus Adapter (SBA) I/O MMU uses 64-bit
little-endian pointers.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v6.4+
This commit is contained in:
Helge Deller 2023-10-18 19:24:14 +02:00
parent 9f5989d79d
commit 86bb854d13
1 changed files with 9 additions and 7 deletions
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16
drivers/char/agp/parisc-agp.c
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@ -38,7 +38,7 @@ static struct _parisc_agp_info {
int lba_cap_offset;
u64 *gatt;
__le64 *gatt;
u64 gatt_entries;
u64 gart_base;
@ -104,7 +104,7 @@ parisc_agp_create_gatt_table(struct agp_bridge_data *bridge)
int i;
for (i = 0; i < info->gatt_entries; i++) {
info->gatt[i] = (unsigned long)agp_bridge->scratch_page;
info->gatt[i] = cpu_to_le64(agp_bridge->scratch_page);
}
return 0;
@ -158,9 +158,9 @@ parisc_agp_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
for (k = 0;
k < info->io_pages_per_kpage;
k++, j++, paddr += info->io_page_size) {
info->gatt[j] =
info->gatt[j] = cpu_to_le64(
parisc_agp_mask_memory(agp_bridge,
paddr, type);
paddr, type));
asm_io_fdc(&info->gatt[j]);
}
}
@ -184,7 +184,7 @@ parisc_agp_remove_memory(struct agp_memory *mem, off_t pg_start, int type)
io_pg_start = info->io_pages_per_kpage * pg_start;
io_pg_count = info->io_pages_per_kpage * mem->page_count;
for (i = io_pg_start; i < io_pg_count + io_pg_start; i++) {
info->gatt[i] = agp_bridge->scratch_page;
info->gatt[i] = cpu_to_le64(agp_bridge->scratch_page);
}
agp_bridge->driver->tlb_flush(mem);
@ -204,7 +204,8 @@ parisc_agp_mask_memory(struct agp_bridge_data *bridge, dma_addr_t addr,
pa |= (ci >> PAGE_SHIFT) & 0xff;/* move CI (8 bits) into lowest byte */
pa |= SBA_PDIR_VALID_BIT; /* set "valid" bit */
return cpu_to_le64(pa);
/* return native (big-endian) PDIR entry */
return pa;
}
static void
@ -251,7 +252,8 @@ static int __init
agp_ioc_init(void __iomem *ioc_regs)
{
struct _parisc_agp_info *info = &parisc_agp_info;
u64 iova_base, *io_pdir, io_tlb_ps;
u64 iova_base, io_tlb_ps;
__le64 *io_pdir;
int io_tlb_shift;
printk(KERN_INFO DRVPFX "IO PDIR shared with sba_iommu\n");