1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_EISA_H |
3 | #define _LINUX_EISA_H |
4 | |
5 | #include <linux/ioport.h> |
6 | #include <linux/device.h> |
7 | #include <linux/mod_devicetable.h> |
8 | |
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 | |
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 |
44 | char pretty_name[50]; |
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 | |
65 | /* These external functions are only available when EISA support is enabled. */ |
66 | #ifdef CONFIG_EISA |
67 | |
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 | |
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 | |
79 | /* Mimics pci.h... */ |
80 | static inline void *eisa_get_drvdata (struct eisa_device *edev) |
81 | { |
82 | return dev_get_drvdata(dev: &edev->dev); |
83 | } |
84 | |
85 | static inline void eisa_set_drvdata (struct eisa_device *edev, void *data) |
86 | { |
87 | dev_set_drvdata(dev: &edev->dev, data); |
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 |
113 | |