projects/linux·blob v3.13 · refs

111 lines · 2.9 KiB

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
34struct 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
49static 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
57struct 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
67extern struct bus_type eisa_bus_type;
68int eisa_driver_register (struct eisa_driver *edrv);
69void eisa_driver_unregister (struct eisa_driver *edrv);
70
71#else /* !CONFIG_EISA */
72
73static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; }
74static inline void eisa_driver_unregister (struct eisa_driver *edrv) { }
75
76#endif /* !CONFIG_EISA */
77
78/* Mimics pci.h... */
79static inline void *eisa_get_drvdata (struct eisa_device *edev)
80{
81 return dev_get_drvdata(&edev->dev);
82}
83
84static 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
92struct 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
103int eisa_root_register (struct eisa_root_device *root);
104
105#ifdef CONFIG_EISA
106extern int EISA_bus;
107#else
108# define EISA_bus 0
109#endif
110
111#endif