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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_POLARIS__H__
#define __ALPHA_POLARIS__H__
#include <linux/types.h>
#include <asm/compiler.h>
/*
* POLARIS is the internal name for a core logic chipset which provides
* memory controller and PCI access for the 21164PC chip based systems.
*
* This file is based on:
*
* Polaris System Controller
* Device Functional Specification
* 22-Jan-98
* Rev. 4.2
*
*/
/* Polaris memory regions */
#define POLARIS_SPARSE_MEM_BASE (IDENT_ADDR + 0xf800000000UL)
#define POLARIS_DENSE_MEM_BASE (IDENT_ADDR + 0xf900000000UL)
#define POLARIS_SPARSE_IO_BASE (IDENT_ADDR + 0xf980000000UL)
#define POLARIS_SPARSE_CONFIG_BASE (IDENT_ADDR + 0xf9c0000000UL)
#define POLARIS_IACK_BASE (IDENT_ADDR + 0xf9f8000000UL)
#define POLARIS_DENSE_IO_BASE (IDENT_ADDR + 0xf9fc000000UL)
#define POLARIS_DENSE_CONFIG_BASE (IDENT_ADDR + 0xf9fe000000UL)
#define POLARIS_IACK_SC POLARIS_IACK_BASE
/* The Polaris command/status registers live in PCI Config space for
* bus 0/device 0. As such, they may be bytes, words, or doublewords.
*/
#define POLARIS_W_VENID (POLARIS_DENSE_CONFIG_BASE)
#define POLARIS_W_DEVID (POLARIS_DENSE_CONFIG_BASE+2)
#define POLARIS_W_CMD (POLARIS_DENSE_CONFIG_BASE+4)
#define POLARIS_W_STATUS (POLARIS_DENSE_CONFIG_BASE+6)
/*
* Data structure for handling POLARIS machine checks:
*/
struct el_POLARIS_sysdata_mcheck {
u_long psc_status;
u_long psc_pcictl0;
u_long psc_pcictl1;
u_long psc_pcictl2;
};
#ifdef __KERNEL__
#ifndef __EXTERN_INLINE
#define __EXTERN_INLINE extern inline
#define __IO_EXTERN_INLINE
#endif
/*
* I/O functions:
*
* POLARIS, the PCI/memory support chipset for the PCA56 (21164PC)
* processors, can use either a sparse address mapping scheme, or the
* so-called byte-word PCI address space, to get at PCI memory and I/O.
*
* However, we will support only the BWX form.
*/
/*
* Memory functions. Polaris allows all accesses (byte/word
* as well as long/quad) to be done through dense space.
*
* We will only support DENSE access via BWX insns.
*/
__EXTERN_INLINE void __iomem *polaris_ioportmap(unsigned long addr)
{
return (void __iomem *)(addr + POLARIS_DENSE_IO_BASE);
}
__EXTERN_INLINE void __iomem *polaris_ioremap(unsigned long addr,
unsigned long size)
{
return (void __iomem *)(addr + POLARIS_DENSE_MEM_BASE);
}
__EXTERN_INLINE int polaris_is_ioaddr(unsigned long addr)
{
return addr >= POLARIS_SPARSE_MEM_BASE;
}
__EXTERN_INLINE int polaris_is_mmio(const volatile void __iomem *addr)
{
return (unsigned long)addr < POLARIS_SPARSE_IO_BASE;
}
#undef __IO_PREFIX
#define __IO_PREFIX polaris
#define polaris_trivial_rw_bw 1
#define polaris_trivial_rw_lq 1
#define polaris_trivial_io_bw 1
#define polaris_trivial_io_lq 1
#define polaris_trivial_iounmap 1
#include <asm/io_trivial.h>
#ifdef __IO_EXTERN_INLINE
#undef __EXTERN_INLINE
#undef __IO_EXTERN_INLINE
#endif
#endif /* __KERNEL__ */
#endif /* __ALPHA_POLARIS__H__ */