cc9d3aaa53
The Jensen IO functions are overly copmplicated because some of the IO addresses refer to special 'local IO' ports, and they get accessed differently. That then makes gcc not actually inline them, and since they were marked "extern inline" when included through the regular <asm/io.h> path, and then only marked "inline" when included from sys_jensen.c, you never necessarily got a body for the IO functions at all. The intent of the sys_jensen.c code is to actually get the non-inlined copy generated, so remove the 'inline' from the magic macro that is supposed to sort this all out. Also, do not mix 'extern inline' functions (that may or may not be inlined and will not generate a function body if they are not) with 'static inline' (that _will_ generate a function body when not inlined). Because gcc will complain about this situation: error: ‘jensen_bus_outb’ is static but used in inline function ‘jensen_outb’ which is not static because gcc basically doesn't know whether to generate a body for that static inline function or not for that call site. So make all of these use that __EXTERN_INLINE marker. Gcc will generally not inline these things on use, and then generate the function body out-of-line in sys_jensen.c. This makes the core IO functions build for the alpha Jensen config. Not that the rest then builds, because it turns out Jensen also doesn't enable PCI, which then makes other drievrs very unhappy, but that's a separate issue. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
348 lines
8.4 KiB
C
348 lines
8.4 KiB
C
/* 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.
|
|
*/
|
|
|
|
__EXTERN_INLINE unsigned int jensen_local_inb(unsigned long addr)
|
|
{
|
|
return 0xff & *(vuip)((addr << 9) + EISA_VL82C106);
|
|
}
|
|
|
|
__EXTERN_INLINE void jensen_local_outb(u8 b, unsigned long addr)
|
|
{
|
|
*(vuip)((addr << 9) + EISA_VL82C106) = b;
|
|
mb();
|
|
}
|
|
|
|
__EXTERN_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);
|
|
}
|
|
|
|
__EXTERN_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(const 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 */
|