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-rw-r--r--arch/mips/mm/Makefile2
-rw-r--r--arch/mips/mm/ioremap.c45
-rw-r--r--arch/mips/mm/ioremap64.c23
3 files changed, 46 insertions, 24 deletions
diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile
index 46f483e952c8..865926a37775 100644
--- a/arch/mips/mm/Makefile
+++ b/arch/mips/mm/Makefile
@@ -23,7 +23,7 @@ obj-y += uasm-mips.o
endif
obj-$(CONFIG_32BIT) += ioremap.o pgtable-32.o
-obj-$(CONFIG_64BIT) += pgtable-64.o
+obj-$(CONFIG_64BIT) += ioremap64.o pgtable-64.o
obj-$(CONFIG_HIGHMEM) += highmem.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_DMA_NONCOHERENT) += dma-noncoherent.o
diff --git a/arch/mips/mm/ioremap.c b/arch/mips/mm/ioremap.c
index 8317f337a86e..c5b5181c7cd0 100644
--- a/arch/mips/mm/ioremap.c
+++ b/arch/mips/mm/ioremap.c
@@ -17,6 +17,10 @@
#include <asm/cacheflush.h>
#include <asm/io.h>
#include <asm/tlbflush.h>
+#include <ioremap.h>
+
+#define IS_LOW512(addr) (!((phys_addr_t)(addr) & (phys_addr_t) ~0x1fffffffULL))
+#define IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == CKSEG1)
static inline void remap_area_pte(pte_t * pte, unsigned long address,
phys_addr_t size, phys_addr_t phys_addr, unsigned long flags)
@@ -118,27 +122,25 @@ static int __ioremap_check_ram(unsigned long start_pfn, unsigned long nr_pages,
}
/*
- * Generic mapping function (not visible outside):
- */
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
+ * ioremap_prot - map bus memory into CPU space
+ * @phys_addr: bus address of the memory
+ * @size: size of the resource to map
*
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
+ * ioremap_prot gives the caller control over cache coherency attributes (CCA)
*/
-
-#define IS_LOW512(addr) (!((phys_addr_t)(addr) & (phys_addr_t) ~0x1fffffffULL))
-
-void __iomem * __ioremap(phys_addr_t phys_addr, phys_addr_t size, unsigned long flags)
+void __iomem *ioremap_prot(phys_addr_t phys_addr, unsigned long size,
+ unsigned long prot_val)
{
+ unsigned long flags = prot_val & _CACHE_MASK;
unsigned long offset, pfn, last_pfn;
- struct vm_struct * area;
+ struct vm_struct *area;
phys_addr_t last_addr;
- void * addr;
+ void *addr;
+ void __iomem *cpu_addr;
+
+ cpu_addr = plat_ioremap(phys_addr, size, flags);
+ if (cpu_addr)
+ return cpu_addr;
phys_addr = fixup_bigphys_addr(phys_addr, size);
@@ -189,14 +191,13 @@ void __iomem * __ioremap(phys_addr_t phys_addr, phys_addr_t size, unsigned long
return (void __iomem *) (offset + (char *)addr);
}
+EXPORT_SYMBOL(ioremap_prot);
-#define IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == CKSEG1)
-
-void __iounmap(const volatile void __iomem *addr)
+void iounmap(const volatile void __iomem *addr)
{
struct vm_struct *p;
- if (IS_KSEG1(addr))
+ if (plat_iounmap(addr) || IS_KSEG1(addr))
return;
p = remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
@@ -205,6 +206,4 @@ void __iounmap(const volatile void __iomem *addr)
kfree(p);
}
-
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(__iounmap);
+EXPORT_SYMBOL(iounmap);
diff --git a/arch/mips/mm/ioremap64.c b/arch/mips/mm/ioremap64.c
new file mode 100644
index 000000000000..15e7820d6a5f
--- /dev/null
+++ b/arch/mips/mm/ioremap64.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/io.h>
+#include <ioremap.h>
+
+void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
+ unsigned long prot_val)
+{
+ unsigned long flags = prot_val & _CACHE_MASK;
+ u64 base = (flags == _CACHE_UNCACHED ? IO_BASE : UNCAC_BASE);
+ void __iomem *addr;
+
+ addr = plat_ioremap(offset, size, flags);
+ if (!addr)
+ addr = (void __iomem *)(unsigned long)(base + offset);
+ return addr;
+}
+EXPORT_SYMBOL(ioremap_prot);
+
+void iounmap(const volatile void __iomem *addr)
+{
+ plat_iounmap(addr);
+}
+EXPORT_SYMBOL(iounmap);