1 files changed, 275 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h
new file mode 100644
index 000000000..c05e781be
--- /dev/null
+++ b/arch/parisc/include/asm/io.h
@@ -0,0 +1,275 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IO_H
+#define _ASM_IO_H
+
+#include <linux/types.h>
+#include <linux/pgtable.h>
+
+#define virt_to_phys(a) ((unsigned long)__pa(a))
+#define phys_to_virt(a) __va(a)
+
+static inline unsigned long isa_bus_to_virt(unsigned long addr) {
+	BUG();
+	return 0;
+}
+
+static inline unsigned long isa_virt_to_bus(void *addr) {
+	BUG();
+	return 0;
+}
+
+/*
+ * Memory mapped I/O
+ *
+ * readX()/writeX() do byteswapping and take an ioremapped address
+ * __raw_readX()/__raw_writeX() don't byteswap and take an ioremapped address.
+ * gsc_*() don't byteswap and operate on physical addresses;
+ *   eg dev->hpa or 0xfee00000.
+ */
+
+static inline unsigned char gsc_readb(unsigned long addr)
+{
+	long flags;
+	unsigned char ret;
+
+	__asm__ __volatile__(
+	"	rsm	%3,%0\n"
+	"	ldbx	0(%2),%1\n"
+	"	mtsm	%0\n"
+	: "=&r" (flags), "=r" (ret) : "r" (addr), "i" (PSW_SM_D) );
+
+	return ret;
+}
+
+static inline unsigned short gsc_readw(unsigned long addr)
+{
+	long flags;
+	unsigned short ret;
+
+	__asm__ __volatile__(
+	"	rsm	%3,%0\n"
+	"	ldhx	0(%2),%1\n"
+	"	mtsm	%0\n"
+	: "=&r" (flags), "=r" (ret) : "r" (addr), "i" (PSW_SM_D) );
+
+	return ret;
+}
+
+static inline unsigned int gsc_readl(unsigned long addr)
+{
+	u32 ret;
+
+	__asm__ __volatile__(
+	"	ldwax	0(%1),%0\n"
+	: "=r" (ret) : "r" (addr) );
+
+	return ret;
+}
+
+static inline unsigned long long gsc_readq(unsigned long addr)
+{
+	unsigned long long ret;
+
+#ifdef CONFIG_64BIT
+	__asm__ __volatile__(
+	"	ldda	0(%1),%0\n"
+	:  "=r" (ret) : "r" (addr) );
+#else
+	/* two reads may have side effects.. */
+	ret = ((u64) gsc_readl(addr)) << 32;
+	ret |= gsc_readl(addr+4);
+#endif
+	return ret;
+}
+
+static inline void gsc_writeb(unsigned char val, unsigned long addr)
+{
+	long flags;
+	__asm__ __volatile__(
+	"	rsm	%3,%0\n"
+	"	stbs	%1,0(%2)\n"
+	"	mtsm	%0\n"
+	: "=&r" (flags) :  "r" (val), "r" (addr), "i" (PSW_SM_D) );
+}
+
+static inline void gsc_writew(unsigned short val, unsigned long addr)
+{
+	long flags;
+	__asm__ __volatile__(
+	"	rsm	%3,%0\n"
+	"	sths	%1,0(%2)\n"
+	"	mtsm	%0\n"
+	: "=&r" (flags) :  "r" (val), "r" (addr), "i" (PSW_SM_D) );
+}
+
+static inline void gsc_writel(unsigned int val, unsigned long addr)
+{
+	__asm__ __volatile__(
+	"	stwas	%0,0(%1)\n"
+	: :  "r" (val), "r" (addr) );
+}
+
+static inline void gsc_writeq(unsigned long long val, unsigned long addr)
+{
+#ifdef CONFIG_64BIT
+	__asm__ __volatile__(
+	"	stda	%0,0(%1)\n"
+	: :  "r" (val), "r" (addr) );
+#else
+	/* two writes may have side effects.. */
+	gsc_writel(val >> 32, addr);
+	gsc_writel(val, addr+4);
+#endif
+}
+
+/*
+ * The standard PCI ioremap interfaces
+ */
+void __iomem *ioremap(unsigned long offset, unsigned long size);
+#define ioremap_wc			ioremap
+#define ioremap_uc			ioremap
+#define pci_iounmap			pci_iounmap
+
+extern void iounmap(const volatile void __iomem *addr);
+
+void memset_io(volatile void __iomem *addr, unsigned char val, int count);
+void memcpy_fromio(void *dst, const volatile void __iomem *src, int count);
+void memcpy_toio(volatile void __iomem *dst, const void *src, int count);
+#define memset_io memset_io
+#define memcpy_fromio memcpy_fromio
+#define memcpy_toio memcpy_toio
+
+/* Port-space IO */
+
+#define inb_p inb
+#define inw_p inw
+#define inl_p inl
+#define outb_p outb
+#define outw_p outw
+#define outl_p outl
+
+extern unsigned char eisa_in8(unsigned short port);
+extern unsigned short eisa_in16(unsigned short port);
+extern unsigned int eisa_in32(unsigned short port);
+extern void eisa_out8(unsigned char data, unsigned short port);
+extern void eisa_out16(unsigned short data, unsigned short port);
+extern void eisa_out32(unsigned int data, unsigned short port);
+
+#if defined(CONFIG_PCI)
+extern unsigned char inb(int addr);
+extern unsigned short inw(int addr);
+extern unsigned int inl(int addr);
+extern void outb(unsigned char b, int addr);
+extern void outw(unsigned short b, int addr);
+extern void outl(unsigned int b, int addr);
+#define inb inb
+#define inw inw
+#define inl inl
+#define outb outb
+#define outw outw
+#define outl outl
+#elif defined(CONFIG_EISA)
+#define inb eisa_in8
+#define inw eisa_in16
+#define inl eisa_in32
+#define outb eisa_out8
+#define outw eisa_out16
+#define outl eisa_out32
+#else
+static inline char inb(unsigned long addr)
+{
+	BUG();
+	return -1;
+}
+
+static inline short inw(unsigned long addr)
+{
+	BUG();
+	return -1;
+}
+
+static inline int inl(unsigned long addr)
+{
+	BUG();
+	return -1;
+}
+#define inb inb
+#define inw inw
+#define inl inl
+#define outb(x, y)	({(void)(x); (void)(y); BUG(); 0;})
+#define outw(x, y)	({(void)(x); (void)(y); BUG(); 0;})
+#define outl(x, y)	({(void)(x); (void)(y); BUG(); 0;})
+#endif
+
+/*
+ * String versions of in/out ops:
+ */
+extern void insb (unsigned long port, void *dst, unsigned long count);
+extern void insw (unsigned long port, void *dst, unsigned long count);
+extern void insl (unsigned long port, void *dst, unsigned long count);
+extern void outsb (unsigned long port, const void *src, unsigned long count);
+extern void outsw (unsigned long port, const void *src, unsigned long count);
+extern void outsl (unsigned long port, const void *src, unsigned long count);
+#define insb insb
+#define insw insw
+#define insl insl
+#define outsb outsb
+#define outsw outsw
+#define outsl outsl
+
+/* IO Port space is :      BBiiii   where BB is HBA number. */
+#define IO_SPACE_LIMIT 0x00ffffff
+
+/* PA machines have an MM I/O space from 0xf0000000-0xffffffff in 32
+ * bit mode and from 0xfffffffff0000000-0xfffffffffffffff in 64 bit
+ * mode (essentially just sign extending.  This macro takes in a 32
+ * bit I/O address (still with the leading f) and outputs the correct
+ * value for either 32 or 64 bit mode */
+#define F_EXTEND(x) ((unsigned long)((x) | (0xffffffff00000000ULL)))
+
+#ifdef CONFIG_64BIT
+#define ioread64 ioread64
+#define ioread64be ioread64be
+#define iowrite64 iowrite64
+#define iowrite64be iowrite64be
+extern u64 ioread64(const void __iomem *addr);
+extern u64 ioread64be(const void __iomem *addr);
+extern void iowrite64(u64 val, void __iomem *addr);
+extern void iowrite64be(u64 val, void __iomem *addr);
+#endif
+
+#include <asm-generic/iomap.h>
+/*
+ * These get provided from <asm-generic/iomap.h> since parisc does not
+ * select GENERIC_IOMAP.
+ */
+#define ioport_map ioport_map
+#define ioport_unmap ioport_unmap
+#define ioread8 ioread8
+#define ioread16 ioread16
+#define ioread32 ioread32
+#define ioread16be ioread16be
+#define ioread32be ioread32be
+#define iowrite8 iowrite8
+#define iowrite16 iowrite16
+#define iowrite32 iowrite32
+#define iowrite16be iowrite16be
+#define iowrite32be iowrite32be
+#define ioread8_rep ioread8_rep
+#define ioread16_rep ioread16_rep
+#define ioread32_rep ioread32_rep
+#define iowrite8_rep iowrite8_rep
+#define iowrite16_rep iowrite16_rep
+#define iowrite32_rep iowrite32_rep
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p)	__va(p)
+
+extern int devmem_is_allowed(unsigned long pfn);
+
+#include <asm-generic/io.h>
+
+#endif