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