diff options
Diffstat (limited to 'kernel/include/linux/eisa.h')
| -rw-r--r-- | kernel/include/linux/eisa.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/kernel/include/linux/eisa.h b/kernel/include/linux/eisa.h new file mode 100644 index 000000000..6925249a5 --- /dev/null +++ b/kernel/include/linux/eisa.h @@ -0,0 +1,111 @@ +#ifndef _LINUX_EISA_H +#define _LINUX_EISA_H + +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/mod_devicetable.h> + +#define EISA_MAX_SLOTS 8 + +#define EISA_MAX_RESOURCES 4 + +/* A few EISA constants/offsets... */ + +#define EISA_DMA1_STATUS 8 +#define EISA_INT1_CTRL 0x20 +#define EISA_INT1_MASK 0x21 +#define EISA_INT2_CTRL 0xA0 +#define EISA_INT2_MASK 0xA1 +#define EISA_DMA2_STATUS 0xD0 +#define EISA_DMA2_WRITE_SINGLE 0xD4 +#define EISA_EXT_NMI_RESET_CTRL 0x461 +#define EISA_INT1_EDGE_LEVEL 0x4D0 +#define EISA_INT2_EDGE_LEVEL 0x4D1 +#define EISA_VENDOR_ID_OFFSET 0xC80 +#define EISA_CONFIG_OFFSET 0xC84 + +#define EISA_CONFIG_ENABLED 1 +#define EISA_CONFIG_FORCED 2 + +/* There is not much we can say about an EISA device, apart from + * signature, slot number, and base address. dma_mask is set by + * default to parent device mask..*/ + +struct eisa_device { + struct eisa_device_id id; + int slot; + int state; + unsigned long base_addr; + struct resource res[EISA_MAX_RESOURCES]; + u64 dma_mask; + struct device dev; /* generic device */ +#ifdef CONFIG_EISA_NAMES + char pretty_name[50]; +#endif +}; + +#define to_eisa_device(n) container_of(n, struct eisa_device, dev) + +static inline int eisa_get_region_index (void *addr) +{ + unsigned long x = (unsigned long) addr; + + x &= 0xc00; + return (x >> 12); +} + +struct eisa_driver { + const struct eisa_device_id *id_table; + struct device_driver driver; +}; + +#define to_eisa_driver(drv) container_of(drv,struct eisa_driver, driver) + +/* These external functions are only available when EISA support is enabled. */ +#ifdef CONFIG_EISA + +extern struct bus_type eisa_bus_type; +int eisa_driver_register (struct eisa_driver *edrv); +void eisa_driver_unregister (struct eisa_driver *edrv); + +#else /* !CONFIG_EISA */ + +static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; } +static inline void eisa_driver_unregister (struct eisa_driver *edrv) { } + +#endif /* !CONFIG_EISA */ + +/* Mimics pci.h... */ +static inline void *eisa_get_drvdata (struct eisa_device *edev) +{ + return dev_get_drvdata(&edev->dev); +} + +static inline void eisa_set_drvdata (struct eisa_device *edev, void *data) +{ + dev_set_drvdata(&edev->dev, data); +} + +/* The EISA root device. There's rumours about machines with multiple + * busses (PA-RISC ?), so we try to handle that. */ + +struct eisa_root_device { + struct device *dev; /* Pointer to bridge device */ + struct resource *res; + unsigned long bus_base_addr; + int slots; /* Max slot number */ + int force_probe; /* Probe even when no slot 0 */ + u64 dma_mask; /* from bridge device */ + int bus_nr; /* Set by eisa_root_register */ + struct resource eisa_root_res; /* ditto */ +}; + +int eisa_root_register (struct eisa_root_device *root); + +#ifdef CONFIG_EISA +extern int EISA_bus; +#else +# define EISA_bus 0 +#endif + +#endif |