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