1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */
21da177e4SLinus Torvalds #ifndef _LINUX_EISA_H
31da177e4SLinus Torvalds #define _LINUX_EISA_H
41da177e4SLinus Torvalds
51da177e4SLinus Torvalds #include <linux/ioport.h>
61da177e4SLinus Torvalds #include <linux/device.h>
707563c71SMichael Tokarev #include <linux/mod_devicetable.h>
81da177e4SLinus Torvalds
91da177e4SLinus Torvalds #define EISA_MAX_SLOTS 8
101da177e4SLinus Torvalds
111da177e4SLinus Torvalds #define EISA_MAX_RESOURCES 4
121da177e4SLinus Torvalds
131da177e4SLinus Torvalds /* A few EISA constants/offsets... */
141da177e4SLinus Torvalds
151da177e4SLinus Torvalds #define EISA_DMA1_STATUS 8
161da177e4SLinus Torvalds #define EISA_INT1_CTRL 0x20
171da177e4SLinus Torvalds #define EISA_INT1_MASK 0x21
181da177e4SLinus Torvalds #define EISA_INT2_CTRL 0xA0
191da177e4SLinus Torvalds #define EISA_INT2_MASK 0xA1
201da177e4SLinus Torvalds #define EISA_DMA2_STATUS 0xD0
211da177e4SLinus Torvalds #define EISA_DMA2_WRITE_SINGLE 0xD4
221da177e4SLinus Torvalds #define EISA_EXT_NMI_RESET_CTRL 0x461
231da177e4SLinus Torvalds #define EISA_INT1_EDGE_LEVEL 0x4D0
241da177e4SLinus Torvalds #define EISA_INT2_EDGE_LEVEL 0x4D1
251da177e4SLinus Torvalds #define EISA_VENDOR_ID_OFFSET 0xC80
261da177e4SLinus Torvalds #define EISA_CONFIG_OFFSET 0xC84
271da177e4SLinus Torvalds
281da177e4SLinus Torvalds #define EISA_CONFIG_ENABLED 1
291da177e4SLinus Torvalds #define EISA_CONFIG_FORCED 2
301da177e4SLinus Torvalds
311da177e4SLinus Torvalds /* There is not much we can say about an EISA device, apart from
321da177e4SLinus Torvalds * signature, slot number, and base address. dma_mask is set by
331da177e4SLinus Torvalds * default to parent device mask..*/
341da177e4SLinus Torvalds
351da177e4SLinus Torvalds struct eisa_device {
361da177e4SLinus Torvalds struct eisa_device_id id;
371da177e4SLinus Torvalds int slot;
381da177e4SLinus Torvalds int state;
391da177e4SLinus Torvalds unsigned long base_addr;
401da177e4SLinus Torvalds struct resource res[EISA_MAX_RESOURCES];
411da177e4SLinus Torvalds u64 dma_mask;
421da177e4SLinus Torvalds struct device dev; /* generic device */
431da177e4SLinus Torvalds #ifdef CONFIG_EISA_NAMES
44ca52a498SKay Sievers char pretty_name[50];
451da177e4SLinus Torvalds #endif
461da177e4SLinus Torvalds };
471da177e4SLinus Torvalds
481da177e4SLinus Torvalds #define to_eisa_device(n) container_of(n, struct eisa_device, dev)
491da177e4SLinus Torvalds
eisa_get_region_index(void * addr)501da177e4SLinus Torvalds static inline int eisa_get_region_index (void *addr)
511da177e4SLinus Torvalds {
521da177e4SLinus Torvalds unsigned long x = (unsigned long) addr;
531da177e4SLinus Torvalds
541da177e4SLinus Torvalds x &= 0xc00;
551da177e4SLinus Torvalds return (x >> 12);
561da177e4SLinus Torvalds }
571da177e4SLinus Torvalds
581da177e4SLinus Torvalds struct eisa_driver {
591da177e4SLinus Torvalds const struct eisa_device_id *id_table;
601da177e4SLinus Torvalds struct device_driver driver;
611da177e4SLinus Torvalds };
621da177e4SLinus Torvalds
631da177e4SLinus Torvalds #define to_eisa_driver(drv) container_of(drv,struct eisa_driver, driver)
641da177e4SLinus Torvalds
65f85da084SMaciej W. Rozycki /* These external functions are only available when EISA support is enabled. */
66f85da084SMaciej W. Rozycki #ifdef CONFIG_EISA
67f85da084SMaciej W. Rozycki
681da177e4SLinus Torvalds extern struct bus_type eisa_bus_type;
691da177e4SLinus Torvalds int eisa_driver_register (struct eisa_driver *edrv);
701da177e4SLinus Torvalds void eisa_driver_unregister (struct eisa_driver *edrv);
711da177e4SLinus Torvalds
72f85da084SMaciej W. Rozycki #else /* !CONFIG_EISA */
73f85da084SMaciej W. Rozycki
eisa_driver_register(struct eisa_driver * edrv)74f85da084SMaciej W. Rozycki static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; }
eisa_driver_unregister(struct eisa_driver * edrv)75f85da084SMaciej W. Rozycki static inline void eisa_driver_unregister (struct eisa_driver *edrv) { }
76f85da084SMaciej W. Rozycki
77f85da084SMaciej W. Rozycki #endif /* !CONFIG_EISA */
78f85da084SMaciej W. Rozycki
791da177e4SLinus Torvalds /* Mimics pci.h... */
eisa_get_drvdata(struct eisa_device * edev)801da177e4SLinus Torvalds static inline void *eisa_get_drvdata (struct eisa_device *edev)
811da177e4SLinus Torvalds {
824b9d0d3bSGreg Kroah-Hartman return dev_get_drvdata(&edev->dev);
831da177e4SLinus Torvalds }
841da177e4SLinus Torvalds
eisa_set_drvdata(struct eisa_device * edev,void * data)851da177e4SLinus Torvalds static inline void eisa_set_drvdata (struct eisa_device *edev, void *data)
861da177e4SLinus Torvalds {
874b9d0d3bSGreg Kroah-Hartman dev_set_drvdata(&edev->dev, data);
881da177e4SLinus Torvalds }
891da177e4SLinus Torvalds
901da177e4SLinus Torvalds /* The EISA root device. There's rumours about machines with multiple
911da177e4SLinus Torvalds * busses (PA-RISC ?), so we try to handle that. */
921da177e4SLinus Torvalds
931da177e4SLinus Torvalds struct eisa_root_device {
941da177e4SLinus Torvalds struct device *dev; /* Pointer to bridge device */
951da177e4SLinus Torvalds struct resource *res;
961da177e4SLinus Torvalds unsigned long bus_base_addr;
971da177e4SLinus Torvalds int slots; /* Max slot number */
981da177e4SLinus Torvalds int force_probe; /* Probe even when no slot 0 */
991da177e4SLinus Torvalds u64 dma_mask; /* from bridge device */
1001da177e4SLinus Torvalds int bus_nr; /* Set by eisa_root_register */
1011da177e4SLinus Torvalds struct resource eisa_root_res; /* ditto */
1021da177e4SLinus Torvalds };
1031da177e4SLinus Torvalds
1041da177e4SLinus Torvalds int eisa_root_register (struct eisa_root_device *root);
1051da177e4SLinus Torvalds
1061da177e4SLinus Torvalds #ifdef CONFIG_EISA
1071da177e4SLinus Torvalds extern int EISA_bus;
1081da177e4SLinus Torvalds #else
1091da177e4SLinus Torvalds # define EISA_bus 0
1101da177e4SLinus Torvalds #endif
1111da177e4SLinus Torvalds
1121da177e4SLinus Torvalds #endif
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