include/linux/eisa.h

   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[DEVICE_NAME_SIZE];
  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 edev->dev.driver_data;
  82 }
  83
  84 static inline void eisa_set_drvdata (struct eisa_device *edev, void *data)
  85 {
  86         edev->dev.driver_data = 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