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eisa.h
/* SPDX-License-Identifier: GPL-2.0 */ #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
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