| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Richard Henderson | 1372 | 52.71% | 5 | 9.09% |
| Linus Torvalds (pre-git) | 789 | 30.31% | 28 | 50.91% |
| Mikulas Patocka | 197 | 7.57% | 1 | 1.82% |
| Ivan Kokshaysky | 101 | 3.88% | 6 | 10.91% |
| Michael Cree | 28 | 1.08% | 1 | 1.82% |
| Linus Torvalds | 21 | 0.81% | 2 | 3.64% |
| Sinan Kaya | 21 | 0.81% | 1 | 1.82% |
| Andrew Morton | 16 | 0.61% | 1 | 1.82% |
| Jes Sorensen | 16 | 0.61% | 1 | 1.82% |
| Will Deacon | 12 | 0.46% | 1 | 1.82% |
| Al Viro | 11 | 0.42% | 2 | 3.64% |
| Krzysztof Kozlowski | 6 | 0.23% | 1 | 1.82% |
| Luc Van Oostenryck | 4 | 0.15% | 1 | 1.82% |
| Guenter Roeck | 3 | 0.12% | 1 | 1.82% |
| Sudip Mukherjee | 3 | 0.12% | 1 | 1.82% |
| Christoph Hellwig | 2 | 0.08% | 1 | 1.82% |
| Greg Kroah-Hartman | 1 | 0.04% | 1 | 1.82% |
| Total | 2603 | 55 |
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ALPHA_IO_H #define __ALPHA_IO_H #ifdef __KERNEL__ #include <linux/kernel.h> #include <linux/mm.h> #include <asm/compiler.h> #include <asm/machvec.h> #include <asm/hwrpb.h> /* The generic header contains only prototypes. Including it ensures that the implementation we have here matches that interface. */ #include <asm-generic/iomap.h> /* We don't use IO slowdowns on the Alpha, but.. */ #define __SLOW_DOWN_IO do { } while (0) #define SLOW_DOWN_IO do { } while (0) /* * Virtual -> physical identity mapping starts at this offset */ #ifdef USE_48_BIT_KSEG #define IDENT_ADDR 0xffff800000000000UL #else #define IDENT_ADDR 0xfffffc0000000000UL #endif /* * We try to avoid hae updates (thus the cache), but when we * do need to update the hae, we need to do it atomically, so * that any interrupts wouldn't get confused with the hae * register not being up-to-date with respect to the hardware * value. */ extern inline void __set_hae(unsigned long new_hae) { unsigned long flags = swpipl(IPL_MAX); barrier(); alpha_mv.hae_cache = new_hae; *alpha_mv.hae_register = new_hae; mb(); /* Re-read to make sure it was written. */ new_hae = *alpha_mv.hae_register; setipl(flags); barrier(); } extern inline void set_hae(unsigned long new_hae) { if (new_hae != alpha_mv.hae_cache) __set_hae(new_hae); } /* * Change virtual addresses to physical addresses and vv. */ #ifdef USE_48_BIT_KSEG static inline unsigned long virt_to_phys(void *address) { return (unsigned long)address - IDENT_ADDR; } static inline void * phys_to_virt(unsigned long address) { return (void *) (address + IDENT_ADDR); } #else static inline unsigned long virt_to_phys(void *address) { unsigned long phys = (unsigned long)address; /* Sign-extend from bit 41. */ phys <<= (64 - 41); phys = (long)phys >> (64 - 41); /* Crop to the physical address width of the processor. */ phys &= (1ul << hwrpb->pa_bits) - 1; return phys; } static inline void * phys_to_virt(unsigned long address) { return (void *)(IDENT_ADDR + (address & ((1ul << 41) - 1))); } #endif #define page_to_phys(page) page_to_pa(page) /* Maximum PIO space address supported? */ #define IO_SPACE_LIMIT 0xffff /* * Change addresses as seen by the kernel (virtual) to addresses as * seen by a device (bus), and vice versa. * * Note that this only works for a limited range of kernel addresses, * and very well may not span all memory. Consider this interface * deprecated in favour of the DMA-mapping API. */ extern unsigned long __direct_map_base; extern unsigned long __direct_map_size; static inline unsigned long __deprecated virt_to_bus(void *address) { unsigned long phys = virt_to_phys(address); unsigned long bus = phys + __direct_map_base; return phys <= __direct_map_size ? bus : 0; } #define isa_virt_to_bus virt_to_bus static inline void * __deprecated bus_to_virt(unsigned long address) { void *virt; /* This check is a sanity check but also ensures that bus address 0 maps to virtual address 0 which is useful to detect null pointers (the NCR driver is much simpler if NULL pointers are preserved). */ address -= __direct_map_base; virt = phys_to_virt(address); return (long)address <= 0 ? NULL : virt; } #define isa_bus_to_virt bus_to_virt /* * There are different chipsets to interface the Alpha CPUs to the world. */ #define IO_CONCAT(a,b) _IO_CONCAT(a,b) #define _IO_CONCAT(a,b) a ## _ ## b #ifdef CONFIG_ALPHA_GENERIC /* In a generic kernel, we always go through the machine vector. */ #define REMAP1(TYPE, NAME, QUAL) \ static inline TYPE generic_##NAME(QUAL void __iomem *addr) \ { \ return alpha_mv.mv_##NAME(addr); \ } #define REMAP2(TYPE, NAME, QUAL) \ static inline void generic_##NAME(TYPE b, QUAL void __iomem *addr) \ { \ alpha_mv.mv_##NAME(b, addr); \ } REMAP1(unsigned int, ioread8, const) REMAP1(unsigned int, ioread16, const) REMAP1(unsigned int, ioread32, const) REMAP1(u8, readb, const volatile) REMAP1(u16, readw, const volatile) REMAP1(u32, readl, const volatile) REMAP1(u64, readq, const volatile) REMAP2(u8, iowrite8, /**/) REMAP2(u16, iowrite16, /**/) REMAP2(u32, iowrite32, /**/) REMAP2(u8, writeb, volatile) REMAP2(u16, writew, volatile) REMAP2(u32, writel, volatile) REMAP2(u64, writeq, volatile) #undef REMAP1 #undef REMAP2 extern inline void __iomem *generic_ioportmap(unsigned long a) { return alpha_mv.mv_ioportmap(a); } static inline void __iomem *generic_ioremap(unsigned long a, unsigned long s) { return alpha_mv.mv_ioremap(a, s); } static inline void generic_iounmap(volatile void __iomem *a) { return alpha_mv.mv_iounmap(a); } static inline int generic_is_ioaddr(unsigned long a) { return alpha_mv.mv_is_ioaddr(a); } static inline int generic_is_mmio(const volatile void __iomem *a) { return alpha_mv.mv_is_mmio(a); } #define __IO_PREFIX generic #define generic_trivial_rw_bw 0 #define generic_trivial_rw_lq 0 #define generic_trivial_io_bw 0 #define generic_trivial_io_lq 0 #define generic_trivial_iounmap 0 #else #if defined(CONFIG_ALPHA_APECS) # include <asm/core_apecs.h> #elif defined(CONFIG_ALPHA_CIA) # include <asm/core_cia.h> #elif defined(CONFIG_ALPHA_IRONGATE) # include <asm/core_irongate.h> #elif defined(CONFIG_ALPHA_JENSEN) # include <asm/jensen.h> #elif defined(CONFIG_ALPHA_LCA) # include <asm/core_lca.h> #elif defined(CONFIG_ALPHA_MARVEL) # include <asm/core_marvel.h> #elif defined(CONFIG_ALPHA_MCPCIA) # include <asm/core_mcpcia.h> #elif defined(CONFIG_ALPHA_POLARIS) # include <asm/core_polaris.h> #elif defined(CONFIG_ALPHA_T2) # include <asm/core_t2.h> #elif defined(CONFIG_ALPHA_TSUNAMI) # include <asm/core_tsunami.h> #elif defined(CONFIG_ALPHA_TITAN) # include <asm/core_titan.h> #elif defined(CONFIG_ALPHA_WILDFIRE) # include <asm/core_wildfire.h> #else #error "What system is this?" #endif #endif /* GENERIC */ /* * We always have external versions of these routines. */ extern u8 inb(unsigned long port); extern u16 inw(unsigned long port); extern u32 inl(unsigned long port); extern void outb(u8 b, unsigned long port); extern void outw(u16 b, unsigned long port); extern void outl(u32 b, unsigned long port); extern u8 readb(const volatile void __iomem *addr); extern u16 readw(const volatile void __iomem *addr); extern u32 readl(const volatile void __iomem *addr); extern u64 readq(const volatile void __iomem *addr); extern void writeb(u8 b, volatile void __iomem *addr); extern void writew(u16 b, volatile void __iomem *addr); extern void writel(u32 b, volatile void __iomem *addr); extern void writeq(u64 b, volatile void __iomem *addr); extern u8 __raw_readb(const volatile void __iomem *addr); extern u16 __raw_readw(const volatile void __iomem *addr); extern u32 __raw_readl(const volatile void __iomem *addr); extern u64 __raw_readq(const volatile void __iomem *addr); extern void __raw_writeb(u8 b, volatile void __iomem *addr); extern void __raw_writew(u16 b, volatile void __iomem *addr); extern void __raw_writel(u32 b, volatile void __iomem *addr); extern void __raw_writeq(u64 b, volatile void __iomem *addr); /* * Mapping from port numbers to __iomem space is pretty easy. */ /* These two have to be extern inline because of the extern prototype from <asm-generic/iomap.h>. It is not legal to mix "extern" and "static" for the same declaration. */ extern inline void __iomem *ioport_map(unsigned long port, unsigned int size) { return IO_CONCAT(__IO_PREFIX,ioportmap) (port); } extern inline void ioport_unmap(void __iomem *addr) { } static inline void __iomem *ioremap(unsigned long port, unsigned long size) { return IO_CONCAT(__IO_PREFIX,ioremap) (port, size); } #define ioremap_wc ioremap #define ioremap_uc ioremap static inline void iounmap(volatile void __iomem *addr) { IO_CONCAT(__IO_PREFIX,iounmap)(addr); } static inline int __is_ioaddr(unsigned long addr) { return IO_CONCAT(__IO_PREFIX,is_ioaddr)(addr); } #define __is_ioaddr(a) __is_ioaddr((unsigned long)(a)) static inline int __is_mmio(const volatile void __iomem *addr) { return IO_CONCAT(__IO_PREFIX,is_mmio)(addr); } /* * If the actual I/O bits are sufficiently trivial, then expand inline. */ #if IO_CONCAT(__IO_PREFIX,trivial_io_bw) extern inline unsigned int ioread8(const void __iomem *addr) { unsigned int ret; mb(); ret = IO_CONCAT(__IO_PREFIX,ioread8)(addr); mb(); return ret; } extern inline unsigned int ioread16(const void __iomem *addr) { unsigned int ret; mb(); ret = IO_CONCAT(__IO_PREFIX,ioread16)(addr); mb(); return ret; } extern inline void iowrite8(u8 b, void __iomem *addr) { mb(); IO_CONCAT(__IO_PREFIX, iowrite8)(b, addr); } extern inline void iowrite16(u16 b, void __iomem *addr) { mb(); IO_CONCAT(__IO_PREFIX, iowrite16)(b, addr); } extern inline u8 inb(unsigned long port) { return ioread8(ioport_map(port, 1)); } extern inline u16 inw(unsigned long port) { return ioread16(ioport_map(port, 2)); } extern inline void outb(u8 b, unsigned long port) { iowrite8(b, ioport_map(port, 1)); } extern inline void outw(u16 b, unsigned long port) { iowrite16(b, ioport_map(port, 2)); } #endif #if IO_CONCAT(__IO_PREFIX,trivial_io_lq) extern inline unsigned int ioread32(const void __iomem *addr) { unsigned int ret; mb(); ret = IO_CONCAT(__IO_PREFIX,ioread32)(addr); mb(); return ret; } extern inline void iowrite32(u32 b, void __iomem *addr) { mb(); IO_CONCAT(__IO_PREFIX, iowrite32)(b, addr); } extern inline u32 inl(unsigned long port) { return ioread32(ioport_map(port, 4)); } extern inline void outl(u32 b, unsigned long port) { iowrite32(b, ioport_map(port, 4)); } #endif #if IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 1 extern inline u8 __raw_readb(const volatile void __iomem *addr) { return IO_CONCAT(__IO_PREFIX,readb)(addr); } extern inline u16 __raw_readw(const volatile void __iomem *addr) { return IO_CONCAT(__IO_PREFIX,readw)(addr); } extern inline void __raw_writeb(u8 b, volatile void __iomem *addr) { IO_CONCAT(__IO_PREFIX,writeb)(b, addr); } extern inline void __raw_writew(u16 b, volatile void __iomem *addr) { IO_CONCAT(__IO_PREFIX,writew)(b, addr); } extern inline u8 readb(const volatile void __iomem *addr) { u8 ret; mb(); ret = __raw_readb(addr); mb(); return ret; } extern inline u16 readw(const volatile void __iomem *addr) { u16 ret; mb(); ret = __raw_readw(addr); mb(); return ret; } extern inline void writeb(u8 b, volatile void __iomem *addr) { mb(); __raw_writeb(b, addr); } extern inline void writew(u16 b, volatile void __iomem *addr) { mb(); __raw_writew(b, addr); } #endif #if IO_CONCAT(__IO_PREFIX,trivial_rw_lq) == 1 extern inline u32 __raw_readl(const volatile void __iomem *addr) { return IO_CONCAT(__IO_PREFIX,readl)(addr); } extern inline u64 __raw_readq(const volatile void __iomem *addr) { return IO_CONCAT(__IO_PREFIX,readq)(addr); } extern inline void __raw_writel(u32 b, volatile void __iomem *addr) { IO_CONCAT(__IO_PREFIX,writel)(b, addr); } extern inline void __raw_writeq(u64 b, volatile void __iomem *addr) { IO_CONCAT(__IO_PREFIX,writeq)(b, addr); } extern inline u32 readl(const volatile void __iomem *addr) { u32 ret; mb(); ret = __raw_readl(addr); mb(); return ret; } extern inline u64 readq(const volatile void __iomem *addr) { u64 ret; mb(); ret = __raw_readq(addr); mb(); return ret; } extern inline void writel(u32 b, volatile void __iomem *addr) { mb(); __raw_writel(b, addr); } extern inline void writeq(u64 b, volatile void __iomem *addr) { mb(); __raw_writeq(b, addr); } #endif #define ioread16be(p) swab16(ioread16(p)) #define ioread32be(p) swab32(ioread32(p)) #define iowrite16be(v,p) iowrite16(swab16(v), (p)) #define iowrite32be(v,p) iowrite32(swab32(v), (p)) #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 u8 readb_relaxed(const volatile void __iomem *addr); extern u16 readw_relaxed(const volatile void __iomem *addr); extern u32 readl_relaxed(const volatile void __iomem *addr); extern u64 readq_relaxed(const volatile void __iomem *addr); #if IO_CONCAT(__IO_PREFIX,trivial_io_bw) extern inline u8 readb_relaxed(const volatile void __iomem *addr) { mb(); return __raw_readb(addr); } extern inline u16 readw_relaxed(const volatile void __iomem *addr) { mb(); return __raw_readw(addr); } #endif #if IO_CONCAT(__IO_PREFIX,trivial_io_lq) extern inline u32 readl_relaxed(const volatile void __iomem *addr) { mb(); return __raw_readl(addr); } extern inline u64 readq_relaxed(const volatile void __iomem *addr) { mb(); return __raw_readq(addr); } #endif #define writeb_relaxed writeb #define writew_relaxed writew #define writel_relaxed writel #define writeq_relaxed writeq /* * String version of IO memory access ops: */ extern void memcpy_fromio(void *, const volatile void __iomem *, long); extern void memcpy_toio(volatile void __iomem *, const void *, long); extern void _memset_c_io(volatile void __iomem *, unsigned long, long); static inline void memset_io(volatile void __iomem *addr, u8 c, long len) { _memset_c_io(addr, 0x0101010101010101UL * c, len); } #define __HAVE_ARCH_MEMSETW_IO static inline void memsetw_io(volatile void __iomem *addr, u16 c, long len) { _memset_c_io(addr, 0x0001000100010001UL * c, len); } /* * 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); /* * The Alpha Jensen hardware for some rather strange reason puts * the RTC clock at 0x170 instead of 0x70. Probably due to some * misguided idea about using 0x70 for NMI stuff. * * These defines will override the defaults when doing RTC queries */ #ifdef CONFIG_ALPHA_GENERIC # define RTC_PORT(x) ((x) + alpha_mv.rtc_port) #else # ifdef CONFIG_ALPHA_JENSEN # define RTC_PORT(x) (0x170+(x)) # else # define RTC_PORT(x) (0x70 + (x)) # endif #endif #define RTC_ALWAYS_BCD 0 /* * Some mucking forons use if[n]def writeq to check if platform has it. * It's a bloody bad idea and we probably want ARCH_HAS_WRITEQ for them * to play with; for now just use cpp anti-recursion logics and make sure * that damn thing is defined and expands to itself. */ #define writeq writeq #define readq readq /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem * access */ #define xlate_dev_mem_ptr(p) __va(p) /* * Convert a virtual cached pointer to an uncached pointer */ #define xlate_dev_kmem_ptr(p) p #endif /* __KERNEL__ */ #endif /* __ALPHA_IO_H */
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