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