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112 lines
3.0 KiB
112 lines
3.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_EISA_H |
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#define _LINUX_EISA_H |
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#include <linux/ioport.h> |
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#include <linux/device.h> |
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#include <linux/mod_devicetable.h> |
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#define EISA_MAX_SLOTS 8 |
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#define EISA_MAX_RESOURCES 4 |
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/* A few EISA constants/offsets... */ |
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#define EISA_DMA1_STATUS 8 |
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#define EISA_INT1_CTRL 0x20 |
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#define EISA_INT1_MASK 0x21 |
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#define EISA_INT2_CTRL 0xA0 |
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#define EISA_INT2_MASK 0xA1 |
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#define EISA_DMA2_STATUS 0xD0 |
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#define EISA_DMA2_WRITE_SINGLE 0xD4 |
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#define EISA_EXT_NMI_RESET_CTRL 0x461 |
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#define EISA_INT1_EDGE_LEVEL 0x4D0 |
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#define EISA_INT2_EDGE_LEVEL 0x4D1 |
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#define EISA_VENDOR_ID_OFFSET 0xC80 |
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#define EISA_CONFIG_OFFSET 0xC84 |
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#define EISA_CONFIG_ENABLED 1 |
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#define EISA_CONFIG_FORCED 2 |
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/* There is not much we can say about an EISA device, apart from |
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* signature, slot number, and base address. dma_mask is set by |
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* default to parent device mask..*/ |
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struct eisa_device { |
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struct eisa_device_id id; |
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int slot; |
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int state; |
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unsigned long base_addr; |
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struct resource res[EISA_MAX_RESOURCES]; |
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u64 dma_mask; |
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struct device dev; /* generic device */ |
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#ifdef CONFIG_EISA_NAMES |
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char pretty_name[50]; |
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#endif |
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}; |
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#define to_eisa_device(n) container_of(n, struct eisa_device, dev) |
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static inline int eisa_get_region_index (void *addr) |
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{ |
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unsigned long x = (unsigned long) addr; |
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x &= 0xc00; |
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return (x >> 12); |
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} |
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struct eisa_driver { |
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const struct eisa_device_id *id_table; |
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struct device_driver driver; |
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}; |
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#define to_eisa_driver(drv) container_of(drv,struct eisa_driver, driver) |
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/* These external functions are only available when EISA support is enabled. */ |
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#ifdef CONFIG_EISA |
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extern struct bus_type eisa_bus_type; |
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int eisa_driver_register (struct eisa_driver *edrv); |
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void eisa_driver_unregister (struct eisa_driver *edrv); |
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#else /* !CONFIG_EISA */ |
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static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; } |
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static inline void eisa_driver_unregister (struct eisa_driver *edrv) { } |
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#endif /* !CONFIG_EISA */ |
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/* Mimics pci.h... */ |
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static inline void *eisa_get_drvdata (struct eisa_device *edev) |
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{ |
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return dev_get_drvdata(&edev->dev); |
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} |
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static inline void eisa_set_drvdata (struct eisa_device *edev, void *data) |
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{ |
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dev_set_drvdata(&edev->dev, data); |
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} |
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/* The EISA root device. There's rumours about machines with multiple |
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* busses (PA-RISC ?), so we try to handle that. */ |
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struct eisa_root_device { |
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struct device *dev; /* Pointer to bridge device */ |
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struct resource *res; |
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unsigned long bus_base_addr; |
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int slots; /* Max slot number */ |
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int force_probe; /* Probe even when no slot 0 */ |
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u64 dma_mask; /* from bridge device */ |
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int bus_nr; /* Set by eisa_root_register */ |
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struct resource eisa_root_res; /* ditto */ |
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}; |
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int eisa_root_register (struct eisa_root_device *root); |
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#ifdef CONFIG_EISA |
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extern int EISA_bus; |
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#else |
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# define EISA_bus 0 |
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#endif |
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#endif
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