* hardware. An example use would be for flash memory that's used for
* execute in place.
*/
-# define __raw_ioswabb(a,x) (x)
-# define __raw_ioswabw(a,x) (x)
-# define __raw_ioswabl(a,x) (x)
-# define __raw_ioswabq(a,x) (x)
-# define ____raw_ioswabq(a,x) (x)
+# define __raw_ioswabb(x) (x)
+# define __raw_ioswabw(x) (x)
+# define __raw_ioswabl(x) (x)
+# define __raw_ioswabq(x) (x)
+# define ____raw_ioswabq(x) (x)
-/* ioswab[bwlq], __mem_ioswab[bwlq] are defined in mangle-port.h */
+/*
+ * Sane hardware offers swapping of PCI/ISA I/O space accesses in hardware;
+ * less sane hardware forces software to fiddle with this...
+ *
+ * Regardless, if the host bus endianness mismatches that of PCI/ISA, then
+ * you can't have the numerical value of data and byte addresses within
+ * multibyte quantities both preserved at the same time. Hence two
+ * variations of functions: non-prefixed ones that preserve the value
+ * and prefixed ones that preserve byte addresses. The latters are
+ * typically used for moving raw data between a peripheral and memory (cf.
+ * string I/O functions), hence the "__mem_" prefix.
+ */
+#if defined(CONFIG_SWAP_IO_SPACE)
+
+# define ioswabb(x) (x)
+# define __mem_ioswabb(x) (x)
+# ifdef CONFIG_SGI_IP22
+/*
+ * IP22 seems braindead enough to swap 16bits values in hardware, but
+ * not 32bits. Go figure... Can't tell without documentation.
+ */
+# define ioswabw(x) (x)
+# define __mem_ioswabw(x) le16_to_cpu(x)
+# else
+# define ioswabw(x) le16_to_cpu(x)
+# define __mem_ioswabw(x) (x)
+# endif
+# define ioswabl(x) le32_to_cpu(x)
+# define __mem_ioswabl(x) (x)
+# define ioswabq(x) le64_to_cpu(x)
+# define __mem_ioswabq(x) (x)
+
+#else
+
+# define ioswabb(x) (x)
+# define __mem_ioswabb(x) (x)
+# define ioswabw(x) (x)
+# define __mem_ioswabw(x) cpu_to_le16(x)
+# define ioswabl(x) (x)
+# define __mem_ioswabl(x) cpu_to_le32(x)
+# define ioswabq(x) (x)
+# define __mem_ioswabq(x) cpu_to_le32(x)
+
+#endif
#define IO_SPACE_LIMIT 0xffff
\
__mem = (void *)__swizzle_addr_##bwlq((unsigned long)(mem)); \
\
- __val = pfx##ioswab##bwlq(__mem, val); \
+ __val = pfx##ioswab##bwlq(val); \
\
if (sizeof(type) != sizeof(u64) || sizeof(u64) == sizeof(long)) \
*__mem = __val; \
BUG(); \
} \
\
- return pfx##ioswab##bwlq(__mem, __val); \
+ return pfx##ioswab##bwlq(__val); \
}
#define __BUILD_IOPORT_SINGLE(pfx, bwlq, type, p, slow) \
volatile type *__addr; \
type __val; \
\
- __addr = (void *)__swizzle_addr_##bwlq(mips_io_port_base + port); \
+ port = __swizzle_addr_##bwlq(port); \
+ __addr = (void *)(mips_io_port_base + port); \
\
- __val = pfx##ioswab##bwlq(__addr, val); \
+ __val = pfx##ioswab##bwlq(val); \
\
/* Really, we want this to be atomic */ \
BUILD_BUG_ON(sizeof(type) > sizeof(unsigned long)); \
volatile type *__addr; \
type __val; \
\
- __addr = (void *)__swizzle_addr_##bwlq(mips_io_port_base + port); \
+ port = __swizzle_addr_##bwlq(port); \
+ __addr = (void *)(mips_io_port_base + port); \
\
BUILD_BUG_ON(sizeof(type) > sizeof(unsigned long)); \
\
__val = *__addr; \
slow; \
\
- return pfx##ioswab##bwlq(__addr, __val); \
+ return pfx##ioswab##bwlq(__val); \
}
#define __BUILD_MEMORY_PFX(bus, bwlq, type) \
*/
#define __ISA_IO_base ((char *)(isa_slot_offset))
+#define isa_readb(a) readb(__ISA_IO_base + (a))
+#define isa_readw(a) readw(__ISA_IO_base + (a))
+#define isa_readl(a) readl(__ISA_IO_base + (a))
+#define isa_readq(a) readq(__ISA_IO_base + (a))
+#define isa_writeb(b,a) writeb(b,__ISA_IO_base + (a))
+#define isa_writew(w,a) writew(w,__ISA_IO_base + (a))
+#define isa_writel(l,a) writel(l,__ISA_IO_base + (a))
+#define isa_writeq(q,a) writeq(q,__ISA_IO_base + (a))
+#define isa_memset_io(a,b,c) memset_io(__ISA_IO_base + (a),(b),(c))
+#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a),__ISA_IO_base + (b),(c))
+#define isa_memcpy_toio(a,b,c) memcpy_toio(__ISA_IO_base + (a),(b),(c))
+
/*
* We don't have csum_partial_copy_fromio() yet, so we cheat here and
* just copy it. The net code will then do the checksum later.
*/
#define eth_io_copy_and_sum(skb,src,len,unused) memcpy_fromio((skb)->data,(src),(len))
+#define isa_eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(b),(c),(d))
/*
* check_signature - find BIOS signatures