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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef __ALPHA_POLARIS__H__ |
3 | #define __ALPHA_POLARIS__H__ | |
4 | ||
5 | #include <linux/types.h> | |
6 | #include <asm/compiler.h> | |
7 | ||
8 | /* | |
9 | * POLARIS is the internal name for a core logic chipset which provides | |
10 | * memory controller and PCI access for the 21164PC chip based systems. | |
11 | * | |
12 | * This file is based on: | |
13 | * | |
14 | * Polaris System Controller | |
15 | * Device Functional Specification | |
16 | * 22-Jan-98 | |
17 | * Rev. 4.2 | |
18 | * | |
19 | */ | |
20 | ||
21 | /* Polaris memory regions */ | |
22 | #define POLARIS_SPARSE_MEM_BASE (IDENT_ADDR + 0xf800000000UL) | |
23 | #define POLARIS_DENSE_MEM_BASE (IDENT_ADDR + 0xf900000000UL) | |
24 | #define POLARIS_SPARSE_IO_BASE (IDENT_ADDR + 0xf980000000UL) | |
25 | #define POLARIS_SPARSE_CONFIG_BASE (IDENT_ADDR + 0xf9c0000000UL) | |
26 | #define POLARIS_IACK_BASE (IDENT_ADDR + 0xf9f8000000UL) | |
27 | #define POLARIS_DENSE_IO_BASE (IDENT_ADDR + 0xf9fc000000UL) | |
28 | #define POLARIS_DENSE_CONFIG_BASE (IDENT_ADDR + 0xf9fe000000UL) | |
29 | ||
30 | #define POLARIS_IACK_SC POLARIS_IACK_BASE | |
31 | ||
32 | /* The Polaris command/status registers live in PCI Config space for | |
33 | * bus 0/device 0. As such, they may be bytes, words, or doublewords. | |
34 | */ | |
35 | #define POLARIS_W_VENID (POLARIS_DENSE_CONFIG_BASE) | |
36 | #define POLARIS_W_DEVID (POLARIS_DENSE_CONFIG_BASE+2) | |
37 | #define POLARIS_W_CMD (POLARIS_DENSE_CONFIG_BASE+4) | |
38 | #define POLARIS_W_STATUS (POLARIS_DENSE_CONFIG_BASE+6) | |
39 | ||
40 | /* | |
41 | * Data structure for handling POLARIS machine checks: | |
42 | */ | |
43 | struct el_POLARIS_sysdata_mcheck { | |
44 | u_long psc_status; | |
45 | u_long psc_pcictl0; | |
46 | u_long psc_pcictl1; | |
47 | u_long psc_pcictl2; | |
48 | }; | |
49 | ||
50 | #ifdef __KERNEL__ | |
51 | ||
52 | #ifndef __EXTERN_INLINE | |
53 | #define __EXTERN_INLINE extern inline | |
54 | #define __IO_EXTERN_INLINE | |
55 | #endif | |
56 | ||
57 | /* | |
58 | * I/O functions: | |
59 | * | |
60 | * POLARIS, the PCI/memory support chipset for the PCA56 (21164PC) | |
61 | * processors, can use either a sparse address mapping scheme, or the | |
62 | * so-called byte-word PCI address space, to get at PCI memory and I/O. | |
63 | * | |
64 | * However, we will support only the BWX form. | |
65 | */ | |
66 | ||
67 | /* | |
68 | * Memory functions. Polaris allows all accesses (byte/word | |
69 | * as well as long/quad) to be done through dense space. | |
70 | * | |
71 | * We will only support DENSE access via BWX insns. | |
72 | */ | |
73 | ||
74 | __EXTERN_INLINE void __iomem *polaris_ioportmap(unsigned long addr) | |
75 | { | |
76 | return (void __iomem *)(addr + POLARIS_DENSE_IO_BASE); | |
77 | } | |
78 | ||
79 | __EXTERN_INLINE void __iomem *polaris_ioremap(unsigned long addr, | |
80 | unsigned long size) | |
81 | { | |
82 | return (void __iomem *)(addr + POLARIS_DENSE_MEM_BASE); | |
83 | } | |
84 | ||
85 | __EXTERN_INLINE int polaris_is_ioaddr(unsigned long addr) | |
86 | { | |
87 | return addr >= POLARIS_SPARSE_MEM_BASE; | |
88 | } | |
89 | ||
90 | __EXTERN_INLINE int polaris_is_mmio(const volatile void __iomem *addr) | |
91 | { | |
92 | return (unsigned long)addr < POLARIS_SPARSE_IO_BASE; | |
93 | } | |
94 | ||
95 | #undef __IO_PREFIX | |
96 | #define __IO_PREFIX polaris | |
97 | #define polaris_trivial_rw_bw 1 | |
98 | #define polaris_trivial_rw_lq 1 | |
99 | #define polaris_trivial_io_bw 1 | |
100 | #define polaris_trivial_io_lq 1 | |
101 | #define polaris_trivial_iounmap 1 | |
102 | #include <asm/io_trivial.h> | |
103 | ||
104 | #ifdef __IO_EXTERN_INLINE | |
105 | #undef __EXTERN_INLINE | |
106 | #undef __IO_EXTERN_INLINE | |
107 | #endif | |
108 | ||
109 | #endif /* __KERNEL__ */ | |
110 | ||
111 | #endif /* __ALPHA_POLARIS__H__ */ |