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
eisa_get_region_index(void * addr)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
eisa_driver_register(struct eisa_driver * edrv)73 static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; }
eisa_driver_unregister(struct eisa_driver * edrv)74 static inline void eisa_driver_unregister (struct eisa_driver *edrv) { }
75
76 #endif /* !CONFIG_EISA */
77
78 /* Mimics pci.h... */
eisa_get_drvdata(struct eisa_device * edev)79 static inline void *eisa_get_drvdata (struct eisa_device *edev)
80 {
81 return dev_get_drvdata(&edev->dev);
82 }
83
eisa_set_drvdata(struct eisa_device * edev,void * data)84 static inline void eisa_set_drvdata (struct eisa_device *edev, void *data)
85 {
86 dev_set_drvdata(&edev->dev, data);
87 }
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
112