| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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[50]; |
| 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 dev_get_drvdata(&edev->dev); |
| 82 | } |
| 83 | |
| 84 | static 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 | |
| 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 |