/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ALPHA_JENSEN_H #define __ALPHA_JENSEN_H #include <asm/compiler.h> /* * Defines for the AlphaPC EISA IO and memory address space. */ /* * NOTE! The memory operations do not set any memory barriers, as it's * not needed for cases like a frame buffer that is essentially memory-like. * You need to do them by hand if the operations depend on ordering. * * Similarly, the port IO operations do a "mb" only after a write operation: * if an mb is needed before (as in the case of doing memory mapped IO * first, and then a port IO operation to the same device), it needs to be * done by hand. * * After the above has bitten me 100 times, I'll give up and just do the * mb all the time, but right now I'm hoping this will work out. Avoiding * mb's may potentially be a noticeable speed improvement, but I can't * honestly say I've tested it. * * Handling interrupts that need to do mb's to synchronize to non-interrupts * is another fun race area. Don't do it (because if you do, I'll have to * do *everything* with interrupts disabled, ugh). */ /* * EISA Interrupt Acknowledge address */ #define EISA_INTA (IDENT_ADDR + 0x100000000UL) /* * FEPROM addresses */ #define EISA_FEPROM0 (IDENT_ADDR + 0x180000000UL) #define EISA_FEPROM1 (IDENT_ADDR + 0x1A0000000UL) /* * VL82C106 base address */ #define EISA_VL82C106 (IDENT_ADDR + 0x1C0000000UL) /* * EISA "Host Address Extension" address (bits 25-31 of the EISA address) */ #define EISA_HAE (IDENT_ADDR + 0x1D0000000UL) /* * "SYSCTL" register address */ #define EISA_SYSCTL (IDENT_ADDR + 0x1E0000000UL) /* * "spare" register address */ #define EISA_SPARE (IDENT_ADDR + 0x1F0000000UL) /* * EISA memory address offset */ #define EISA_MEM (IDENT_ADDR + 0x200000000UL) /* * EISA IO address offset */ #define EISA_IO (IDENT_ADDR + 0x300000000UL) #ifdef __KERNEL__ #ifndef __EXTERN_INLINE #define __EXTERN_INLINE extern inline #define __IO_EXTERN_INLINE #endif /* * Handle the "host address register". This needs to be set * to the high 7 bits of the EISA address. This is also needed * for EISA IO addresses, which are only 16 bits wide (the * hae needs to be set to 0). * * HAE isn't needed for the local IO operations, though. */ #define JENSEN_HAE_ADDRESS EISA_HAE #define JENSEN_HAE_MASK 0x1ffffff __EXTERN_INLINE void jensen_set_hae(unsigned long addr) { /* hae on the Jensen is bits 31:25 shifted right */ addr >>= 25; if (addr != alpha_mv.hae_cache) set_hae(addr); } #define vuip volatile unsigned int * /* * IO functions * * The "local" functions are those that don't go out to the EISA bus, * but instead act on the VL82C106 chip directly.. This is mainly the * keyboard, RTC, printer and first two serial lines.. * * The local stuff makes for some complications, but it seems to be * gone in the PCI version. I hope I can get DEC suckered^H^H^H^H^H^H^H^H * convinced that I need one of the newer machines. */ static inline unsigned int jensen_local_inb(unsigned long addr) { return 0xff & *(vuip)((addr << 9) + EISA_VL82C106); } static inline void jensen_local_outb(u8 b, unsigned long addr) { *(vuip)((addr << 9) + EISA_VL82C106) = b; mb(); } static inline unsigned int jensen_bus_inb(unsigned long addr) { long result; jensen_set_hae(0); result = *(volatile int *)((addr << 7) + EISA_IO + 0x00); return __kernel_extbl(result, addr & 3); } static inline void jensen_bus_outb(u8 b, unsigned long addr) { jensen_set_hae(0); *(vuip)((addr << 7) + EISA_IO + 0x00) = b * 0x01010101; mb(); } /* * It seems gcc is not very good at optimizing away logical * operations that result in operations across inline functions. * Which is why this is a macro. */ #define jensen_is_local(addr) ( \ /* keyboard */ (addr == 0x60 || addr == 0x64) || \ /* RTC */ (addr == 0x170 || addr == 0x171) || \ /* mb COM2 */ (addr >= 0x2f8 && addr <= 0x2ff) || \ /* mb LPT1 */ (addr >= 0x3bc && addr <= 0x3be) || \ /* mb COM2 */ (addr >= 0x3f8 && addr <= 0x3ff)) __EXTERN_INLINE u8 jensen_inb(unsigned long addr) { if (jensen_is_local(addr)) return jensen_local_inb(addr); else return jensen_bus_inb(addr); } __EXTERN_INLINE void jensen_outb(u8 b, unsigned long addr) { if (jensen_is_local(addr)) jensen_local_outb(b, addr); else jensen_bus_outb(b, addr); } __EXTERN_INLINE u16 jensen_inw(unsigned long addr) { long result; jensen_set_hae(0); result = *(volatile int *) ((addr << 7) + EISA_IO + 0x20); result >>= (addr & 3) * 8; return 0xffffUL & result; } __EXTERN_INLINE u32 jensen_inl(unsigned long addr) { jensen_set_hae(0); return *(vuip) ((addr << 7) + EISA_IO + 0x60); } __EXTERN_INLINE void jensen_outw(u16 b, unsigned long addr) { jensen_set_hae(0); *(vuip) ((addr << 7) + EISA_IO + 0x20) = b * 0x00010001; mb(); } __EXTERN_INLINE void jensen_outl(u32 b, unsigned long addr) { jensen_set_hae(0); *(vuip) ((addr << 7) + EISA_IO + 0x60) = b; mb(); } /* * Memory functions. */ __EXTERN_INLINE u8 jensen_readb(const volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; long result; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; result = *(volatile int *) ((addr << 7) + EISA_MEM + 0x00); result >>= (addr & 3) * 8; return 0xffUL & result; } __EXTERN_INLINE u16 jensen_readw(const volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; long result; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; result = *(volatile int *) ((addr << 7) + EISA_MEM + 0x20); result >>= (addr & 3) * 8; return 0xffffUL & result; } __EXTERN_INLINE u32 jensen_readl(const volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; return *(vuip) ((addr << 7) + EISA_MEM + 0x60); } __EXTERN_INLINE u64 jensen_readq(const volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; unsigned long r0, r1; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; addr = (addr << 7) + EISA_MEM + 0x60; r0 = *(vuip) (addr); r1 = *(vuip) (addr + (4 << 7)); return r1 << 32 | r0; } __EXTERN_INLINE void jensen_writeb(u8 b, volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; *(vuip) ((addr << 7) + EISA_MEM + 0x00) = b * 0x01010101; } __EXTERN_INLINE void jensen_writew(u16 b, volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; *(vuip) ((addr << 7) + EISA_MEM + 0x20) = b * 0x00010001; } __EXTERN_INLINE void jensen_writel(u32 b, volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; *(vuip) ((addr << 7) + EISA_MEM + 0x60) = b; } __EXTERN_INLINE void jensen_writeq(u64 b, volatile void __iomem *xaddr) { unsigned long addr = (unsigned long) xaddr; jensen_set_hae(addr); addr &= JENSEN_HAE_MASK; addr = (addr << 7) + EISA_MEM + 0x60; *(vuip) (addr) = b; *(vuip) (addr + (4 << 7)) = b >> 32; } __EXTERN_INLINE void __iomem *jensen_ioportmap(unsigned long addr) { return (void __iomem *)addr; } __EXTERN_INLINE void __iomem *jensen_ioremap(unsigned long addr, unsigned long size) { return (void __iomem *)(addr + 0x100000000ul); } __EXTERN_INLINE int jensen_is_ioaddr(unsigned long addr) { return (long)addr >= 0; } __EXTERN_INLINE int jensen_is_mmio(const volatile void __iomem *addr) { return (unsigned long)addr >= 0x100000000ul; } /* New-style ioread interface. All the routines are so ugly for Jensen that it doesn't make sense to merge them. */ #define IOPORT(OS, NS) \ __EXTERN_INLINE unsigned int jensen_ioread##NS(void __iomem *xaddr) \ { \ if (jensen_is_mmio(xaddr)) \ return jensen_read##OS(xaddr - 0x100000000ul); \ else \ return jensen_in##OS((unsigned long)xaddr); \ } \ __EXTERN_INLINE void jensen_iowrite##NS(u##NS b, void __iomem *xaddr) \ { \ if (jensen_is_mmio(xaddr)) \ jensen_write##OS(b, xaddr - 0x100000000ul); \ else \ jensen_out##OS(b, (unsigned long)xaddr); \ } IOPORT(b, 8) IOPORT(w, 16) IOPORT(l, 32) #undef IOPORT #undef vuip #undef __IO_PREFIX #define __IO_PREFIX jensen #define jensen_trivial_rw_bw 0 #define jensen_trivial_rw_lq 0 #define jensen_trivial_io_bw 0 #define jensen_trivial_io_lq 0 #define jensen_trivial_iounmap 1 #include <asm/io_trivial.h> #ifdef __IO_EXTERN_INLINE #undef __EXTERN_INLINE #undef __IO_EXTERN_INLINE #endif #endif /* __KERNEL__ */ #endif /* __ALPHA_JENSEN_H */
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hwrpb.h | File | 6.9 KB | 0644 |
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io.h | File | 15.03 KB | 0644 |
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io_trivial.h | File | 3.07 KB | 0644 |
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irq.h | File | 2.31 KB | 0644 |
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irq_regs.h | File | 34 B | 0644 |
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irqflags.h | File | 1.17 KB | 0644 |
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jensen.h | File | 8.39 KB | 0644 |
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machvec.h | File | 3.68 KB | 0644 |
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