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/* 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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