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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _LINUX_EISA_H |
3 | #define _LINUX_EISA_H | |
4 | ||
5 | #include <linux/ioport.h> | |
6 | #include <linux/device.h> | |
07563c71 | 7 | #include <linux/mod_devicetable.h> |
1da177e4 | 8 | |
1da177e4 LT |
9 | #define EISA_MAX_SLOTS 8 |
10 | ||
11 | #define EISA_MAX_RESOURCES 4 | |
12 | ||
13 | /* A few EISA constants/offsets... */ | |
14 | ||
15 | #define EISA_DMA1_STATUS 8 | |
16 | #define EISA_INT1_CTRL 0x20 | |
17 | #define EISA_INT1_MASK 0x21 | |
18 | #define EISA_INT2_CTRL 0xA0 | |
19 | #define EISA_INT2_MASK 0xA1 | |
20 | #define EISA_DMA2_STATUS 0xD0 | |
21 | #define EISA_DMA2_WRITE_SINGLE 0xD4 | |
22 | #define EISA_EXT_NMI_RESET_CTRL 0x461 | |
23 | #define EISA_INT1_EDGE_LEVEL 0x4D0 | |
24 | #define EISA_INT2_EDGE_LEVEL 0x4D1 | |
25 | #define EISA_VENDOR_ID_OFFSET 0xC80 | |
26 | #define EISA_CONFIG_OFFSET 0xC84 | |
27 | ||
28 | #define EISA_CONFIG_ENABLED 1 | |
29 | #define EISA_CONFIG_FORCED 2 | |
30 | ||
1da177e4 LT |
31 | /* There is not much we can say about an EISA device, apart from |
32 | * signature, slot number, and base address. dma_mask is set by | |
33 | * default to parent device mask..*/ | |
34 | ||
35 | struct eisa_device { | |
36 | struct eisa_device_id id; | |
37 | int slot; | |
38 | int state; | |
39 | unsigned long base_addr; | |
40 | struct resource res[EISA_MAX_RESOURCES]; | |
41 | u64 dma_mask; | |
42 | struct device dev; /* generic device */ | |
43 | #ifdef CONFIG_EISA_NAMES | |
ca52a498 | 44 | char pretty_name[50]; |
1da177e4 LT |
45 | #endif |
46 | }; | |
47 | ||
48 | #define to_eisa_device(n) container_of(n, struct eisa_device, dev) | |
49 | ||
50 | static inline int eisa_get_region_index (void *addr) | |
51 | { | |
52 | unsigned long x = (unsigned long) addr; | |
53 | ||
54 | x &= 0xc00; | |
55 | return (x >> 12); | |
56 | } | |
57 | ||
58 | struct eisa_driver { | |
59 | const struct eisa_device_id *id_table; | |
60 | struct device_driver driver; | |
61 | }; | |
62 | ||
63 | #define to_eisa_driver(drv) container_of(drv,struct eisa_driver, driver) | |
64 | ||
f85da084 MR |
65 | /* These external functions are only available when EISA support is enabled. */ |
66 | #ifdef CONFIG_EISA | |
67 | ||
1da177e4 LT |
68 | extern struct bus_type eisa_bus_type; |
69 | int eisa_driver_register (struct eisa_driver *edrv); | |
70 | void eisa_driver_unregister (struct eisa_driver *edrv); | |
71 | ||
f85da084 MR |
72 | #else /* !CONFIG_EISA */ |
73 | ||
74 | static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; } | |
75 | static inline void eisa_driver_unregister (struct eisa_driver *edrv) { } | |
76 | ||
77 | #endif /* !CONFIG_EISA */ | |
78 | ||
1da177e4 LT |
79 | /* Mimics pci.h... */ |
80 | static inline void *eisa_get_drvdata (struct eisa_device *edev) | |
81 | { | |
4b9d0d3b | 82 | return dev_get_drvdata(&edev->dev); |
1da177e4 LT |
83 | } |
84 | ||
85 | static inline void eisa_set_drvdata (struct eisa_device *edev, void *data) | |
86 | { | |
4b9d0d3b | 87 | dev_set_drvdata(&edev->dev, data); |
1da177e4 LT |
88 | } |
89 | ||
90 | /* The EISA root device. There's rumours about machines with multiple | |
91 | * busses (PA-RISC ?), so we try to handle that. */ | |
92 | ||
93 | struct eisa_root_device { | |
94 | struct device *dev; /* Pointer to bridge device */ | |
95 | struct resource *res; | |
96 | unsigned long bus_base_addr; | |
97 | int slots; /* Max slot number */ | |
98 | int force_probe; /* Probe even when no slot 0 */ | |
99 | u64 dma_mask; /* from bridge device */ | |
100 | int bus_nr; /* Set by eisa_root_register */ | |
101 | struct resource eisa_root_res; /* ditto */ | |
102 | }; | |
103 | ||
104 | int eisa_root_register (struct eisa_root_device *root); | |
105 | ||
106 | #ifdef CONFIG_EISA | |
107 | extern int EISA_bus; | |
108 | #else | |
109 | # define EISA_bus 0 | |
110 | #endif | |
111 | ||
112 | #endif |