linux/include/linux/eisa.h
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   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
 112
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