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Diffstat (limited to 'arch/nds32/include/asm/io.h')
| -rw-r--r-- | arch/nds32/include/asm/io.h | 457 |
1 files changed, 0 insertions, 457 deletions
diff --git a/arch/nds32/include/asm/io.h b/arch/nds32/include/asm/io.h deleted file mode 100644 index fdfc574afc0..00000000000 --- a/arch/nds32/include/asm/io.h +++ /dev/null @@ -1,457 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * linux/include/asm-nds/io.h - * - * Copyright (C) 1996-2000 Russell King - * - * Copyright (C) 2011 Andes Technology Corporation - * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> - * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> - * - * Modifications: - * 16-Sep-1996 RMK Inlined the inx/outx functions & optimised for both - * constant addresses and variable addresses. - * 04-Dec-1997 RMK Moved a lot of this stuff to the new architecture - * specific IO header files. - * 27-Mar-1999 PJB Second parameter of memcpy_toio is const.. - * 04-Apr-1999 PJB Added check_signature. - * 12-Dec-1999 RMK More cleanups - * 18-Jun-2000 RMK Removed virt_to_* and friends definitions - */ -#ifndef __ASM_NDS_IO_H -#define __ASM_NDS_IO_H - -/* - * CAUTION: - * - do not implement for NDS32 Arch yet. - * - cmd_pci.c, cmd_scsi.c, Lynxkdi.c, usb.c, usb_storage.c, etc... - * iinclude asm/io.h - */ - -#ifdef __KERNEL__ - -#include <linux/types.h> -#include <asm/byteorder.h> - -static inline void sync(void) -{ -} - -#ifdef CONFIG_ARCH_MAP_SYSMEM -static inline void *map_sysmem(phys_addr_t paddr, unsigned long len) -{ - if(paddr <PHYS_SDRAM_0_SIZE + PHYS_SDRAM_1_SIZE) - paddr = paddr | 0x40000000; - return (void *)(uintptr_t)paddr; -} - -static inline void *unmap_sysmem(const void *vaddr) -{ - phys_addr_t paddr = (phys_addr_t)vaddr; - paddr = paddr & ~0x40000000; - return (void *)(uintptr_t)paddr; -} - -static inline phys_addr_t map_to_sysmem(const void *ptr) -{ - return (phys_addr_t)(uintptr_t)ptr; -} -#endif - -/* - * Generic virtual read/write. Note that we don't support half-word - * read/writes. We define __arch_*[bl] here, and leave __arch_*w - * to the architecture specific code. - */ -#define __arch_getb(a) (*(unsigned char *)(a)) -#define __arch_getw(a) (*(unsigned short *)(a)) -#define __arch_getl(a) (*(unsigned int *)(a)) - -#define __arch_putb(v, a) (*(unsigned char *)(a) = (v)) -#define __arch_putw(v, a) (*(unsigned short *)(a) = (v)) -#define __arch_putl(v, a) (*(unsigned int *)(a) = (v)) - -extern void __raw_writesb(unsigned int addr, const void *data, int bytelen); -extern void __raw_writesw(unsigned int addr, const void *data, int wordlen); -extern void __raw_writesl(unsigned int addr, const void *data, int longlen); - -extern void __raw_readsb(unsigned int addr, void *data, int bytelen); -extern void __raw_readsw(unsigned int addr, void *data, int wordlen); -extern void __raw_readsl(unsigned int addr, void *data, int longlen); - -#define __raw_writeb(v, a) __arch_putb(v, a) -#define __raw_writew(v, a) __arch_putw(v, a) -#define __raw_writel(v, a) __arch_putl(v, a) - -#define __raw_readb(a) __arch_getb(a) -#define __raw_readw(a) __arch_getw(a) -#define __raw_readl(a) __arch_getl(a) - -/* - * TODO: The kernel offers some more advanced versions of barriers, it might - * have some advantages to use them instead of the simple one here. - */ -#define dmb() __asm__ __volatile__ ("" : : : "memory") -#define __iormb() dmb() -#define __iowmb() dmb() - -static inline void writeb(u8 val, volatile void __iomem *addr) -{ - __iowmb(); - __arch_putb(val, addr); -} - -static inline void writew(u16 val, volatile void __iomem *addr) -{ - __iowmb(); - __arch_putw(val, addr); - -} - -static inline void writel(u32 val, volatile void __iomem *addr) -{ - __iowmb(); - __arch_putl(val, addr); -} - -static inline u8 readb(const volatile void __iomem *addr) -{ - u8 val; - - val = __arch_getb(addr); - __iormb(); - return val; -} - -static inline u16 readw(const volatile void __iomem *addr) -{ - u16 val; - - val = __arch_getw(addr); - __iormb(); - return val; -} - -static inline u32 readl(const volatile void __iomem *addr) -{ - u32 val; - - val = __arch_getl(addr); - __iormb(); - return val; -} - -/* - * The compiler seems to be incapable of optimising constants - * properly. Spell it out to the compiler in some cases. - * These are only valid for small values of "off" (< 1<<12) - */ -#define __raw_base_writeb(val, base, off) __arch_base_putb(val, base, off) -#define __raw_base_writew(val, base, off) __arch_base_putw(val, base, off) -#define __raw_base_writel(val, base, off) __arch_base_putl(val, base, off) - -#define __raw_base_readb(base, off) __arch_base_getb(base, off) -#define __raw_base_readw(base, off) __arch_base_getw(base, off) -#define __raw_base_readl(base, off) __arch_base_getl(base, off) - -#define out_arch(type, endian, a, v) __raw_write##type(cpu_to_##endian(v), a) -#define in_arch(type, endian, a) endian##_to_cpu(__raw_read##type(a)) - -#define out_le32(a, v) out_arch(l, le32, a, v) -#define out_le16(a, v) out_arch(w, le16, a, v) - -#define in_le32(a) in_arch(l, le32, a) -#define in_le16(a) in_arch(w, le16, a) - -#define out_be32(a, v) out_arch(l, be32, a, v) -#define out_be16(a, v) out_arch(w, be16, a, v) - -#define in_be32(a) in_arch(l, be32, a) -#define in_be16(a) in_arch(w, be16, a) - -#define out_8(a, v) __raw_writeb(v, a) -#define in_8(a) __raw_readb(a) - -/* - * Clear and set bits in one shot. These macros can be used to clear and - * set multiple bits in a register using a single call. These macros can - * also be used to set a multiple-bit bit pattern using a mask, by - * specifying the mask in the 'clear' parameter and the new bit pattern - * in the 'set' parameter. - */ - -#define clrbits(type, addr, clear) \ - out_##type((addr), in_##type(addr) & ~(clear)) - -#define setbits(type, addr, set) \ - out_##type((addr), in_##type(addr) | (set)) - -#define clrsetbits(type, addr, clear, set) \ - out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) - -#define clrbits_be32(addr, clear) clrbits(be32, addr, clear) -#define setbits_be32(addr, set) setbits(be32, addr, set) -#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) - -#define clrbits_le32(addr, clear) clrbits(le32, addr, clear) -#define setbits_le32(addr, set) setbits(le32, addr, set) -#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) - -#define clrbits_be16(addr, clear) clrbits(be16, addr, clear) -#define setbits_be16(addr, set) setbits(be16, addr, set) -#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) - -#define clrbits_le16(addr, clear) clrbits(le16, addr, clear) -#define setbits_le16(addr, set) setbits(le16, addr, set) -#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) - -#define clrbits_8(addr, clear) clrbits(8, addr, clear) -#define setbits_8(addr, set) setbits(8, addr, set) -#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) - -/* - * Now, pick up the machine-defined IO definitions - * #include <asm/arch/io.h> - */ - -/* - * IO port access primitives - * ------------------------- - * - * The NDS32 doesn't have special IO access instructions just like ARM; - * all IO is memory mapped. - * Note that these are defined to perform little endian accesses - * only. Their primary purpose is to access PCI and ISA peripherals. - * - * Note that for a big endian machine, this implies that the following - * big endian mode connectivity is in place, as described by numerious - * ARM documents: - * - * PCI: D0-D7 D8-D15 D16-D23 D24-D31 - * ARM: D24-D31 D16-D23 D8-D15 D0-D7 - * - * The machine specific io.h include defines __io to translate an "IO" - * address to a memory address. - * - * Note that we prevent GCC re-ordering or caching values in expressions - * by introducing sequence points into the in*() definitions. Note that - * __raw_* do not guarantee this behaviour. - * - * The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space. - */ -#ifdef __io -#define outb(v, p) __raw_writeb(v, __io(p)) -#define outw(v, p) __raw_writew(cpu_to_le16(v), __io(p)) -#define outl(v, p) __raw_writel(cpu_to_le32(v), __io(p)) - -#define inb(p) ({ unsigned int __v = __raw_readb(__io(p)); __v; }) -#define inw(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(__io(p))); __v; }) -#define inl(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(__io(p))); __v; }) - -#define outsb(p, d, l) writesb(__io(p), d, l) -#define outsw(p, d, l) writesw(__io(p), d, l) -#define outsl(p, d, l) writesl(__io(p), d, l) - -#define insb(p, d, l) readsb(__io(p), d, l) -#define insw(p, d, l) readsw(__io(p), d, l) -#define insl(p, d, l) readsl(__io(p), d, l) - -static inline void readsb(unsigned int *addr, void * data, int bytelen) -{ - unsigned char *ptr = (unsigned char *)addr; - unsigned char *ptr2 = (unsigned char *)data; - while (bytelen) { - *ptr2 = *ptr; - ptr2++; - bytelen--; - } -} - -static inline void readsw(unsigned int *addr, void * data, int wordlen) -{ - unsigned short *ptr = (unsigned short *)addr; - unsigned short *ptr2 = (unsigned short *)data; - while (wordlen) { - *ptr2 = *ptr; - ptr2++; - wordlen--; - } -} - -static inline void readsl(unsigned int *addr, void * data, int longlen) -{ - unsigned int *ptr = (unsigned int *)addr; - unsigned int *ptr2 = (unsigned int *)data; - while (longlen) { - *ptr2 = *ptr; - ptr2++; - longlen--; - } -} -static inline void writesb(unsigned int *addr, const void * data, int bytelen) -{ - unsigned char *ptr = (unsigned char *)addr; - unsigned char *ptr2 = (unsigned char *)data; - while (bytelen) { - *ptr = *ptr2; - ptr2++; - bytelen--; - } -} -static inline void writesw(unsigned int *addr, const void * data, int wordlen) -{ - unsigned short *ptr = (unsigned short *)addr; - unsigned short *ptr2 = (unsigned short *)data; - while (wordlen) { - *ptr = *ptr2; - ptr2++; - wordlen--; - } -} -static inline void writesl(unsigned int *addr, const void * data, int longlen) -{ - unsigned int *ptr = (unsigned int *)addr; - unsigned int *ptr2 = (unsigned int *)data; - while (longlen) { - *ptr = *ptr2; - ptr2++; - longlen--; - } -} -#endif - -#define outb_p(val, port) outb((val), (port)) -#define outw_p(val, port) outw((val), (port)) -#define outl_p(val, port) outl((val), (port)) -#define inb_p(port) inb((port)) -#define inw_p(port) inw((port)) -#define inl_p(port) inl((port)) - -#define outsb_p(port, from, len) outsb(port, from, len) -#define outsw_p(port, from, len) outsw(port, from, len) -#define outsl_p(port, from, len) outsl(port, from, len) -#define insb_p(port, to, len) insb(port, to, len) -#define insw_p(port, to, len) insw(port, to, len) -#define insl_p(port, to, len) insl(port, to, len) - -/* - * DMA-consistent mapping functions. These allocate/free a region of - * uncached, unwrite-buffered mapped memory space for use with DMA - * devices. This is the "generic" version. The PCI specific version - * is in pci.h - */ -extern void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle); -extern void consistent_free(void *vaddr, size_t size, dma_addr_t handle); -extern void consistent_sync(void *vaddr, size_t size, int rw); - -/* - * String version of IO memory access ops: - */ -extern void _memcpy_fromio(void *, unsigned long, size_t); -extern void _memcpy_toio(unsigned long, const void *, size_t); -extern void _memset_io(unsigned long, int, size_t); - -extern void __readwrite_bug(const char *fn); - -/* - * If this architecture has PCI memory IO, then define the read/write - * macros. These should only be used with the cookie passed from - * ioremap. - */ -#ifdef __mem_pci - -#define readb(c) ({ unsigned int __v = \ - __raw_readb(__mem_pci(c)); __v; }) -#define readw(c) ({ unsigned int __v = \ - le16_to_cpu(__raw_readw(__mem_pci(c))); __v; }) -#define readl(c) ({ unsigned int __v = \ - le32_to_cpu(__raw_readl(__mem_pci(c))); __v; }) - -#define writeb(v, c) __raw_writeb(v, __mem_pci(c)) -#define writew(v, c) __raw_writew(cpu_to_le16(v), __mem_pci(c)) -#define writel(v, c) __raw_writel(cpu_to_le32(v), __mem_pci(c)) - -#define memset_io(c, v, l) _memset_io(__mem_pci(c), (v), (l)) -#define memcpy_fromio(a, c, l) _memcpy_fromio((a), __mem_pci(c), (l)) -#define memcpy_toio(c, a, l) _memcpy_toio(__mem_pci(c), (a), (l)) - -#define eth_io_copy_and_sum(s, c, l, b) \ - eth_copy_and_sum((s), __mem_pci(c), (l), (b)) - -static inline int -check_signature(unsigned long io_addr, const unsigned char *signature, - int length) -{ - int retval = 0; - do { - if (readb(io_addr) != *signature) - goto out; - io_addr++; - signature++; - length--; - } while (length); - retval = 1; -out: - return retval; -} -#endif /* __mem_pci */ - -/* - * If this architecture has ISA IO, then define the isa_read/isa_write - * macros. - */ -#ifdef __mem_isa - -#define isa_readb(addr) __raw_readb(__mem_isa(addr)) -#define isa_readw(addr) __raw_readw(__mem_isa(addr)) -#define isa_readl(addr) __raw_readl(__mem_isa(addr)) -#define isa_writeb(val, addr) __raw_writeb(val, __mem_isa(addr)) -#define isa_writew(val, addr) __raw_writew(val, __mem_isa(addr)) -#define isa_writel(val, addr) __raw_writel(val, __mem_isa(addr)) -#define isa_memset_io(a, b, c) _memset_io(__mem_isa(a), (b), (c)) -#define isa_memcpy_fromio(a, b, c) _memcpy_fromio((a), __mem_isa(b), (c)) -#define isa_memcpy_toio(a, b, c) _memcpy_toio(__mem_isa((a)), (b), (c)) - -#define isa_eth_io_copy_and_sum(a, b, c, d) \ - eth_copy_and_sum((a), __mem_isa(b), (c), (d)) - -static inline int -isa_check_signature(unsigned long io_addr, const unsigned char *signature, - int length) -{ - int retval = 0; - do { - if (isa_readb(io_addr) != *signature) - goto out; - io_addr++; - signature++; - length--; - } while (length); - retval = 1; -out: - return retval; -} - -#else /* __mem_isa */ - -#define isa_readb(addr) (__readwrite_bug("isa_readb"), 0) -#define isa_readw(addr) (__readwrite_bug("isa_readw"), 0) -#define isa_readl(addr) (__readwrite_bug("isa_readl"), 0) -#define isa_writeb(val, addr) __readwrite_bug("isa_writeb") -#define isa_writew(val, addr) __readwrite_bug("isa_writew") -#define isa_writel(val, addr) __readwrite_bug("isa_writel") -#define isa_memset_io(a, b, c) __readwrite_bug("isa_memset_io") -#define isa_memcpy_fromio(a, b, c) __readwrite_bug("isa_memcpy_fromio") -#define isa_memcpy_toio(a, b, c) __readwrite_bug("isa_memcpy_toio") - -#define isa_eth_io_copy_and_sum(a, b, c, d) \ - __readwrite_bug("isa_eth_io_copy_and_sum") - -#define isa_check_signature(io, sig, len) (0) - -#endif /* __mem_isa */ - -#include <asm-generic/io.h> - -#endif /* __KERNEL__ */ -#endif /* __ASM_NDS_IO_H */ |