arch/alpha/include/asm/jensen.h - arm/linux - Git at Google

 /* 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 */
	/* 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 */