Linux kernel mirror (for testing)
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linux
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/* Chosen to hold the longest string in eisa.ids. */
32#define EISA_DEVICE_INFO_NAME_SIZE 74
33
34/* There is not much we can say about an EISA device, apart from
35 * signature, slot number, and base address. dma_mask is set by
36 * default to parent device mask..*/
37
38struct eisa_device {
39 struct eisa_device_id id;
40 int slot;
41 int state;
42 unsigned long base_addr;
43 struct resource res[EISA_MAX_RESOURCES];
44 u64 dma_mask;
45 struct device dev; /* generic device */
46#ifdef CONFIG_EISA_NAMES
47 char pretty_name[EISA_DEVICE_INFO_NAME_SIZE];
48#endif
49};
50
51#define to_eisa_device(n) container_of(n, struct eisa_device, dev)
52
53static inline int eisa_get_region_index (void *addr)
54{
55 unsigned long x = (unsigned long) addr;
56
57 x &= 0xc00;
58 return (x >> 12);
59}
60
61struct eisa_driver {
62 const struct eisa_device_id *id_table;
63 struct device_driver driver;
64};
65
66#define to_eisa_driver(drv) container_of_const(drv,struct eisa_driver, driver)
67
68/* These external functions are only available when EISA support is enabled. */
69#ifdef CONFIG_EISA
70
71extern const struct bus_type eisa_bus_type;
72int eisa_driver_register (struct eisa_driver *edrv);
73void eisa_driver_unregister (struct eisa_driver *edrv);
74
75#else /* !CONFIG_EISA */
76
77static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; }
78static inline void eisa_driver_unregister (struct eisa_driver *edrv) { }
79
80#endif /* !CONFIG_EISA */
81
82/* Mimics pci.h... */
83static inline void *eisa_get_drvdata (struct eisa_device *edev)
84{
85 return dev_get_drvdata(&edev->dev);
86}
87
88static inline void eisa_set_drvdata (struct eisa_device *edev, void *data)
89{
90 dev_set_drvdata(&edev->dev, data);
91}
92
93/* The EISA root device. There's rumours about machines with multiple
94 * busses (PA-RISC ?), so we try to handle that. */
95
96struct eisa_root_device {
97 struct device *dev; /* Pointer to bridge device */
98 struct resource *res;
99 unsigned long bus_base_addr;
100 int slots; /* Max slot number */
101 int force_probe; /* Probe even when no slot 0 */
102 u64 dma_mask; /* from bridge device */
103 int bus_nr; /* Set by eisa_root_register */
104 struct resource eisa_root_res; /* ditto */
105};
106
107int eisa_root_register (struct eisa_root_device *root);
108
109#ifdef CONFIG_EISA
110extern int EISA_bus;
111#else
112# define EISA_bus 0
113#endif
114
115#endif