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
   7 #define EISA_SIG_LEN   8
   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 /* The EISA signature, in ASCII form, null terminated */
  31 struct eisa_device_id {
  32         char          sig[EISA_SIG_LEN];
  33         unsigned long driver_data;
  34 };
  35
  36 /* There is not much we can say about an EISA device, apart from
  37  * signature, slot number, and base address. dma_mask is set by
  38  * default to parent device mask..*/
  39
  40 struct eisa_device {
  41         struct eisa_device_id id;
  42         int                   slot;
  43         int                   state;
  44         unsigned long         base_addr;
  45         struct resource       res[EISA_MAX_RESOURCES];
  46         u64                   dma_mask;
  47         struct device         dev; /* generic device */
  48 #ifdef CONFIG_EISA_NAMES
  49         char                  pretty_name[DEVICE_NAME_SIZE];
  50 #endif
  51 };
  52
  53 #define to_eisa_device(n) container_of(n, struct eisa_device, dev)
  54
  55 static inline int eisa_get_region_index (void *addr)
  56 {
  57         unsigned long x = (unsigned long) addr;
  58
  59         x &= 0xc00;
  60         return (x >> 12);
  61 }
  62
  63 struct eisa_driver {
  64         const struct eisa_device_id *id_table;
  65         struct device_driver         driver;
  66 };
  67
  68 #define to_eisa_driver(drv) container_of(drv,struct eisa_driver, driver)
  69
  70 extern struct bus_type eisa_bus_type;
  71 int eisa_driver_register (struct eisa_driver *edrv);
  72 void eisa_driver_unregister (struct eisa_driver *edrv);
  73
  74 /* Mimics pci.h... */
  75 static inline void *eisa_get_drvdata (struct eisa_device *edev)
  76 {
  77         return edev->dev.driver_data;
  78 }
  79
  80 static inline void eisa_set_drvdata (struct eisa_device *edev, void *data)
  81 {
  82         edev->dev.driver_data = data;
  83 }
  84
  85 /* The EISA root device. There's rumours about machines with multiple
  86  * busses (PA-RISC ?), so we try to handle that. */
  87
  88 struct eisa_root_device {
  89         struct device   *dev;    /* Pointer to bridge device */
  90         struct resource *res;
  91         unsigned long    bus_base_addr;
  92         int              slots;  /* Max slot number */
  93         int              force_probe; /* Probe even when no slot 0 */
  94         u64              dma_mask; /* from bridge device */
  95         int              bus_nr; /* Set by eisa_root_register */
  96         struct resource  eisa_root_res; /* ditto */
  97 };
  98
  99 int eisa_root_register (struct eisa_root_device *root);
 100
 101 #ifdef CONFIG_EISA
 102 extern int EISA_bus;
 103 #else
 104 # define EISA_bus 0
 105 #endif
 106
 107 #endif