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usr
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src
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linux-headers-6.8.0-36-generic
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include
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linux
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drwxr-xr-x
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tc.h
/* * Interface to the TURBOchannel related routines. * * Copyright (c) 1998 Harald Koerfgen * Copyright (c) 2005 James Simmons * Copyright (c) 2006 Maciej W. Rozycki * * Based on: * * "TURBOchannel Firmware Specification", EK-TCAAD-FS-004 * * from Digital Equipment Corporation. * * This file is subject to the terms and conditions of the GNU * General Public License. See the file "COPYING" in the main * directory of this archive for more details. */ #ifndef _LINUX_TC_H #define _LINUX_TC_H #include <linux/compiler.h> #include <linux/device.h> #include <linux/ioport.h> #include <linux/types.h> /* * Offsets for the ROM header locations for TURBOchannel cards. */ #define TC_OLDCARD 0x3c0000 #define TC_NEWCARD 0x000000 #define TC_ROM_WIDTH 0x3e0 #define TC_ROM_STRIDE 0x3e4 #define TC_ROM_SIZE 0x3e8 #define TC_SLOT_SIZE 0x3ec #define TC_PATTERN0 0x3f0 #define TC_PATTERN1 0x3f4 #define TC_PATTERN2 0x3f8 #define TC_PATTERN3 0x3fc #define TC_FIRM_VER 0x400 #define TC_VENDOR 0x420 #define TC_MODULE 0x440 #define TC_FIRM_TYPE 0x460 #define TC_FLAGS 0x470 #define TC_ROM_OBJECTS 0x480 /* * Information obtained through the get_tcinfo() PROM call. */ struct tcinfo { s32 revision; /* Hardware revision level. */ s32 clk_period; /* Clock period in nanoseconds. */ s32 slot_size; /* Slot size in megabytes. */ s32 io_timeout; /* I/O timeout in cycles. */ s32 dma_range; /* DMA address range in megabytes. */ s32 max_dma_burst; /* Maximum DMA burst length. */ s32 parity; /* System module supports TC parity. */ s32 reserved[4]; }; /* * TURBOchannel bus. */ struct tc_bus { struct list_head devices; /* List of devices on this bus. */ struct resource resource[2]; /* Address space routed to this bus. */ struct device dev; char name[13]; resource_size_t slot_base; resource_size_t ext_slot_base; resource_size_t ext_slot_size; int num_tcslots; struct tcinfo info; }; /* * TURBOchannel device. */ struct tc_dev { struct list_head node; /* Node in list of all TC devices. */ struct tc_bus *bus; /* Bus this device is on. */ struct tc_driver *driver; /* Which driver has allocated this device. */ struct device dev; /* Generic device interface. */ struct resource resource; /* Address space of this device. */ u64 dma_mask; /* DMA addressable range. */ char vendor[9]; char name[9]; char firmware[9]; int interrupt; int slot; }; #define to_tc_dev(n) container_of(n, struct tc_dev, dev) struct tc_device_id { char vendor[9]; char name[9]; }; /* * TURBOchannel driver. */ struct tc_driver { struct list_head node; const struct tc_device_id *id_table; struct device_driver driver; }; #define to_tc_driver(drv) container_of(drv, struct tc_driver, driver) /* * Return TURBOchannel clock frequency in Hz. */ static inline unsigned long tc_get_speed(struct tc_bus *tbus) { return 100000 * (10000 / (unsigned long)tbus->info.clk_period); } #ifdef CONFIG_TC extern struct bus_type tc_bus_type; extern int tc_register_driver(struct tc_driver *tdrv); extern void tc_unregister_driver(struct tc_driver *tdrv); #else /* !CONFIG_TC */ static inline int tc_register_driver(struct tc_driver *tdrv) { return 0; } static inline void tc_unregister_driver(struct tc_driver *tdrv) { } #endif /* CONFIG_TC */ /* * These have to be provided by the architecture. */ extern int tc_preadb(u8 *valp, void __iomem *addr); extern int tc_bus_get_info(struct tc_bus *tbus); extern void tc_device_get_irq(struct tc_dev *tdev); #endif /* _LINUX_TC_H */
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