1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
502 lines
14 KiB
C
502 lines
14 KiB
C
/* $Id: io.h,v 1.47 2001/12/13 10:36:02 davem Exp $ */
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#ifndef __SPARC64_IO_H
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#define __SPARC64_IO_H
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#include <linux/kernel.h>
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/page.h> /* IO address mapping routines need this */
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#include <asm/system.h>
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#include <asm/asi.h>
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/* PC crapola... */
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#define __SLOW_DOWN_IO do { } while (0)
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#define SLOW_DOWN_IO do { } while (0)
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extern unsigned long virt_to_bus_not_defined_use_pci_map(volatile void *addr);
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#define virt_to_bus virt_to_bus_not_defined_use_pci_map
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extern unsigned long bus_to_virt_not_defined_use_pci_map(volatile void *addr);
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#define bus_to_virt bus_to_virt_not_defined_use_pci_map
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/* BIO layer definitions. */
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extern unsigned long kern_base, kern_size;
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#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
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#define BIO_VMERGE_BOUNDARY 8192
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/* Different PCI controllers we support have their PCI MEM space
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* mapped to an either 2GB (Psycho) or 4GB (Sabre) aligned area,
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* so need to chop off the top 33 or 32 bits.
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*/
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extern unsigned long pci_memspace_mask;
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#define bus_dvma_to_mem(__vaddr) ((__vaddr) & pci_memspace_mask)
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static __inline__ u8 _inb(unsigned long addr)
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{
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u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_inb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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return ret;
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}
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static __inline__ u16 _inw(unsigned long addr)
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{
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u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_inw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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return ret;
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}
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static __inline__ u32 _inl(unsigned long addr)
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{
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u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_inl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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return ret;
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}
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static __inline__ void _outb(u8 b, unsigned long addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_outb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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}
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static __inline__ void _outw(u16 w, unsigned long addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_outw */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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}
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static __inline__ void _outl(u32 l, unsigned long addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_outl */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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}
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#define inb(__addr) (_inb((unsigned long)(__addr)))
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#define inw(__addr) (_inw((unsigned long)(__addr)))
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#define inl(__addr) (_inl((unsigned long)(__addr)))
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#define outb(__b, __addr) (_outb((u8)(__b), (unsigned long)(__addr)))
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#define outw(__w, __addr) (_outw((u16)(__w), (unsigned long)(__addr)))
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#define outl(__l, __addr) (_outl((u32)(__l), (unsigned long)(__addr)))
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#define inb_p(__addr) inb(__addr)
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#define outb_p(__b, __addr) outb(__b, __addr)
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#define inw_p(__addr) inw(__addr)
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#define outw_p(__w, __addr) outw(__w, __addr)
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#define inl_p(__addr) inl(__addr)
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#define outl_p(__l, __addr) outl(__l, __addr)
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extern void outsb(void __iomem *addr, const void *src, unsigned long count);
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extern void outsw(void __iomem *addr, const void *src, unsigned long count);
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extern void outsl(void __iomem *addr, const void *src, unsigned long count);
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extern void insb(void __iomem *addr, void *dst, unsigned long count);
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extern void insw(void __iomem *addr, void *dst, unsigned long count);
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extern void insl(void __iomem *addr, void *dst, unsigned long count);
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#define ioread8_rep(a,d,c) insb(a,d,c)
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#define ioread16_rep(a,d,c) insw(a,d,c)
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#define ioread32_rep(a,d,c) insl(a,d,c)
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#define iowrite8_rep(a,s,c) outsb(a,s,c)
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#define iowrite16_rep(a,s,c) outsw(a,s,c)
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#define iowrite32_rep(a,s,c) outsl(a,s,c)
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/* Memory functions, same as I/O accesses on Ultra. */
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static inline u8 _readb(const volatile void __iomem *addr)
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{ u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_readb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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return ret;
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}
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static inline u16 _readw(const volatile void __iomem *addr)
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{ u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_readw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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return ret;
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}
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static inline u32 _readl(const volatile void __iomem *addr)
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{ u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_readl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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return ret;
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}
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static inline u64 _readq(const volatile void __iomem *addr)
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{ u64 ret;
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__asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_readq */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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return ret;
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}
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static inline void _writeb(u8 b, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_writeb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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}
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static inline void _writew(u16 w, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_writew */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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}
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static inline void _writel(u32 l, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_writel */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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}
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static inline void _writeq(u64 q, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_writeq */"
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: /* no outputs */
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: "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
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}
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#define readb(__addr) _readb(__addr)
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#define readw(__addr) _readw(__addr)
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#define readl(__addr) _readl(__addr)
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#define readq(__addr) _readq(__addr)
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#define readb_relaxed(__addr) _readb(__addr)
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#define readw_relaxed(__addr) _readw(__addr)
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#define readl_relaxed(__addr) _readl(__addr)
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#define readq_relaxed(__addr) _readq(__addr)
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#define writeb(__b, __addr) _writeb(__b, __addr)
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#define writew(__w, __addr) _writew(__w, __addr)
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#define writel(__l, __addr) _writel(__l, __addr)
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#define writeq(__q, __addr) _writeq(__q, __addr)
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/* Now versions without byte-swapping. */
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static __inline__ u8 _raw_readb(unsigned long addr)
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{
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u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_raw_readb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static __inline__ u16 _raw_readw(unsigned long addr)
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{
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u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_raw_readw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static __inline__ u32 _raw_readl(unsigned long addr)
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{
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u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_raw_readl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static __inline__ u64 _raw_readq(unsigned long addr)
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{
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u64 ret;
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__asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_raw_readq */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static __inline__ void _raw_writeb(u8 b, unsigned long addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_raw_writeb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static __inline__ void _raw_writew(u16 w, unsigned long addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_raw_writew */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static __inline__ void _raw_writel(u32 l, unsigned long addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_raw_writel */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static __inline__ void _raw_writeq(u64 q, unsigned long addr)
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{
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__asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_raw_writeq */"
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: /* no outputs */
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: "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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#define __raw_readb(__addr) (_raw_readb((unsigned long)(__addr)))
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#define __raw_readw(__addr) (_raw_readw((unsigned long)(__addr)))
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#define __raw_readl(__addr) (_raw_readl((unsigned long)(__addr)))
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#define __raw_readq(__addr) (_raw_readq((unsigned long)(__addr)))
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#define __raw_writeb(__b, __addr) (_raw_writeb((u8)(__b), (unsigned long)(__addr)))
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#define __raw_writew(__w, __addr) (_raw_writew((u16)(__w), (unsigned long)(__addr)))
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#define __raw_writel(__l, __addr) (_raw_writel((u32)(__l), (unsigned long)(__addr)))
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#define __raw_writeq(__q, __addr) (_raw_writeq((u64)(__q), (unsigned long)(__addr)))
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/* Valid I/O Space regions are anywhere, because each PCI bus supported
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* can live in an arbitrary area of the physical address range.
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*/
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#define IO_SPACE_LIMIT 0xffffffffffffffffUL
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/* Now, SBUS variants, only difference from PCI is that we do
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* not use little-endian ASIs.
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*/
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static inline u8 _sbus_readb(const volatile void __iomem *addr)
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{
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u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* sbus_readb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline u16 _sbus_readw(const volatile void __iomem *addr)
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{
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u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* sbus_readw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline u32 _sbus_readl(const volatile void __iomem *addr)
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{
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u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* sbus_readl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline u64 _sbus_readq(const volatile void __iomem *addr)
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{
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u64 ret;
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__asm__ __volatile__("ldxa\t[%1] %2, %0\t/* sbus_readq */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline void _sbus_writeb(u8 b, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* sbus_writeb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static inline void _sbus_writew(u16 w, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* sbus_writew */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static inline void _sbus_writel(u32 l, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* sbus_writel */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static inline void _sbus_writeq(u64 l, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stxa\t%r0, [%1] %2\t/* sbus_writeq */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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#define sbus_readb(__addr) _sbus_readb(__addr)
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#define sbus_readw(__addr) _sbus_readw(__addr)
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#define sbus_readl(__addr) _sbus_readl(__addr)
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#define sbus_readq(__addr) _sbus_readq(__addr)
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#define sbus_writeb(__b, __addr) _sbus_writeb(__b, __addr)
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#define sbus_writew(__w, __addr) _sbus_writew(__w, __addr)
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#define sbus_writel(__l, __addr) _sbus_writel(__l, __addr)
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#define sbus_writeq(__l, __addr) _sbus_writeq(__l, __addr)
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static inline void _sbus_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
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{
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while(n--) {
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sbus_writeb(c, dst);
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dst++;
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}
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}
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#define sbus_memset_io(d,c,sz) _sbus_memset_io(d,c,sz)
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static inline void
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_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
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{
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volatile void __iomem *d = dst;
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while (n--) {
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writeb(c, d);
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d++;
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}
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}
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#define memset_io(d,c,sz) _memset_io(d,c,sz)
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static inline void
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_memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
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{
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char *d = dst;
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while (n--) {
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char tmp = readb(src);
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*d++ = tmp;
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src++;
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}
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}
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#define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
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static inline void
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_memcpy_toio(volatile void __iomem *dst, const void *src, __kernel_size_t n)
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{
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const char *s = src;
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volatile void __iomem *d = dst;
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while (n--) {
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char tmp = *s++;
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writeb(tmp, d);
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d++;
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}
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}
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#define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
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static inline int check_signature(void __iomem *io_addr,
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const unsigned char *signature,
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int length)
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{
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int retval = 0;
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do {
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if (readb(io_addr) != *signature++)
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goto out;
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io_addr++;
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} while (--length);
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retval = 1;
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out:
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return retval;
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}
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#define mmiowb()
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#ifdef __KERNEL__
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/* On sparc64 we have the whole physical IO address space accessible
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* using physically addressed loads and stores, so this does nothing.
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*/
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static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
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{
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return (void __iomem *)offset;
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}
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#define ioremap_nocache(X,Y) ioremap((X),(Y))
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static inline void iounmap(volatile void __iomem *addr)
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{
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}
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#define ioread8(X) readb(X)
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#define ioread16(X) readw(X)
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#define ioread32(X) readl(X)
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#define iowrite8(val,X) writeb(val,X)
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#define iowrite16(val,X) writew(val,X)
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#define iowrite32(val,X) writel(val,X)
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|
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/* Create a virtual mapping cookie for an IO port range */
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extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
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extern void ioport_unmap(void __iomem *);
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|
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/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
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|
struct pci_dev;
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extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
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extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
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|
|
|
/* Similarly for SBUS. */
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|
#define sbus_ioremap(__res, __offset, __size, __name) \
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|
({ unsigned long __ret; \
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|
__ret = (__res)->start + (((__res)->flags & 0x1ffUL) << 32UL); \
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|
__ret += (unsigned long) (__offset); \
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|
if (! request_region((__ret), (__size), (__name))) \
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|
__ret = 0UL; \
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|
(void __iomem *) __ret; \
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|
})
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|
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|
#define sbus_iounmap(__addr, __size) \
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|
release_region((unsigned long)(__addr), (__size))
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|
|
|
/* Nothing to do */
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|
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|
#define dma_cache_inv(_start,_size) do { } while (0)
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|
#define dma_cache_wback(_start,_size) do { } while (0)
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|
#define dma_cache_wback_inv(_start,_size) do { } while (0)
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|
|
|
/*
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|
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
|
|
* access
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|
*/
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|
#define xlate_dev_mem_ptr(p) __va(p)
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|
|
|
/*
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|
* Convert a virtual cached pointer to an uncached pointer
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|
*/
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|
#define xlate_dev_kmem_ptr(p) p
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|
|
|
#endif
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|
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|
#endif /* !(__SPARC64_IO_H) */
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