projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b454cc66 MR |
1 | /* |
| 2 | * Interface to the TURBOchannel related routines. | |
| 3 | * | |
| 4 | * Copyright (c) 1998 Harald Koerfgen | |
| 5 | * Copyright (c) 2005 James Simmons | |
| 6 | * Copyright (c) 2006 Maciej W. Rozycki | |
| 7 | * | |
| 8 | * Based on: | |
| 9 | * | |
| 10 | * "TURBOchannel Firmware Specification", EK-TCAAD-FS-004 | |
| 11 | * | |
| 12 | * from Digital Equipment Corporation. | |
| 13 | * | |
| 14 | * This file is subject to the terms and conditions of the GNU | |
| 15 | * General Public License. See the file "COPYING" in the main | |
| 16 | * directory of this archive for more details. | |
| 17 | */ | |
| 18 | #ifndef _LINUX_TC_H | |
| 19 | #define _LINUX_TC_H | |
| 20 | ||
| 21 | #include <linux/compiler.h> | |
| 22 | #include <linux/device.h> | |
| 23 | #include <linux/ioport.h> | |
| 24 | #include <linux/types.h> | |
| 25 | ||
| 26 | /* | |
| 27 | * Offsets for the ROM header locations for TURBOchannel cards. | |
| 28 | */ | |
| 29 | #define TC_OLDCARD 0x3c0000 | |
| 30 | #define TC_NEWCARD 0x000000 | |
| 31 | ||
| 32 | #define TC_ROM_WIDTH 0x3e0 | |
| 33 | #define TC_ROM_STRIDE 0x3e4 | |
| 34 | #define TC_ROM_SIZE 0x3e8 | |
| 35 | #define TC_SLOT_SIZE 0x3ec | |
| 36 | #define TC_PATTERN0 0x3f0 | |
| 37 | #define TC_PATTERN1 0x3f4 | |
| 38 | #define TC_PATTERN2 0x3f8 | |
| 39 | #define TC_PATTERN3 0x3fc | |
| 40 | #define TC_FIRM_VER 0x400 | |
| 41 | #define TC_VENDOR 0x420 | |
| 42 | #define TC_MODULE 0x440 | |
| 43 | #define TC_FIRM_TYPE 0x460 | |
| 44 | #define TC_FLAGS 0x470 | |
| 45 | #define TC_ROM_OBJECTS 0x480 | |
| 46 | ||
| 47 | /* | |
| 48 | * Information obtained through the get_tcinfo() PROM call. | |
| 49 | */ | |
| 50 | struct tcinfo { | |
| 51 | s32 revision; /* Hardware revision level. */ | |
| 52 | s32 clk_period; /* Clock period in nanoseconds. */ | |
| 53 | s32 slot_size; /* Slot size in megabytes. */ | |
| 54 | s32 io_timeout; /* I/O timeout in cycles. */ | |
| 55 | s32 dma_range; /* DMA address range in megabytes. */ | |
| 56 | s32 max_dma_burst; /* Maximum DMA burst length. */ | |
| 57 | s32 parity; /* System module supports TC parity. */ | |
| 58 | s32 reserved[4]; | |
| 59 | }; | |
| 60 | ||
| 61 | /* | |
| 62 | * TURBOchannel bus. | |
| 63 | */ | |
| 64 | struct tc_bus { | |
| 65 | struct list_head devices; /* List of devices on this bus. */ | |
| 66 | struct resource resource[2]; /* Address space routed to this bus. */ | |
| 67 | ||
| 68 | struct device dev; | |
| 69 | char name[13]; | |
| 70 | resource_size_t slot_base; | |
| 71 | resource_size_t ext_slot_base; | |
| 72 | resource_size_t ext_slot_size; | |
| 73 | int num_tcslots; | |
| 74 | struct tcinfo info; | |
| 75 | }; | |
| 76 | ||
| 77 | /* | |
| 78 | * TURBOchannel device. | |
| 79 | */ | |
| 80 | struct tc_dev { | |
| 81 | struct list_head node; /* Node in list of all TC devices. */ | |
| 82 | struct tc_bus *bus; /* Bus this device is on. */ | |
| 83 | struct tc_driver *driver; /* Which driver has allocated this | |
| 84 | device. */ | |
| 85 | struct device dev; /* Generic device interface. */ | |
| 86 | struct resource resource; /* Address space of this device. */ | |
| 87 | char vendor[9]; | |
| 88 | char name[9]; | |
| 89 | char firmware[9]; | |
| 90 | int interrupt; | |
| 91 | int slot; | |
| 92 | }; | |
| 93 | ||
| 94 | #define to_tc_dev(n) container_of(n, struct tc_dev, dev) | |
| 95 | ||
| 96 | struct tc_device_id { | |
| 97 | char vendor[9]; | |
| 98 | char name[9]; | |
| 99 | }; | |
| 100 | ||
| 101 | /* | |
| 102 | * TURBOchannel driver. | |
| 103 | */ | |
| 104 | struct tc_driver { | |
| 105 | struct list_head node; | |
| 106 | const struct tc_device_id *id_table; | |
| 107 | struct device_driver driver; | |
| 108 | }; | |
| 109 | ||
| 110 | #define to_tc_driver(drv) container_of(drv, struct tc_driver, driver) | |
| 111 | ||
| 112 | /* | |
| 113 | * Return TURBOchannel clock frequency in Hz. | |
| 114 | */ | |
| 115 | static inline unsigned long tc_get_speed(struct tc_bus *tbus) | |
| 116 | { | |
| 117 | return 100000 * (10000 / (unsigned long)tbus->info.clk_period); | |
| 118 | } | |
| 119 | ||
| 120 | #ifdef CONFIG_TC | |
| 121 | ||
| 122 | extern struct bus_type tc_bus_type; | |
| 123 | ||
| 124 | extern int tc_register_driver(struct tc_driver *tdrv); | |
| 125 | extern void tc_unregister_driver(struct tc_driver *tdrv); | |
| 126 | ||
| 127 | #else /* !CONFIG_TC */ | |
| 128 | ||
| 129 | static inline int tc_register_driver(struct tc_driver *tdrv) { return 0; } | |
| 130 | static inline void tc_unregister_driver(struct tc_driver *tdrv) { } | |
| 131 | ||
| 132 | #endif /* CONFIG_TC */ | |
| 133 | ||
| 134 | /* | |
| 135 | * These have to be provided by the architecture. | |
| 136 | */ | |
| 137 | extern int tc_preadb(u8 *valp, void __iomem *addr); | |
| 138 | extern int tc_bus_get_info(struct tc_bus *tbus); | |
| 139 | extern void tc_device_get_irq(struct tc_dev *tdev); | |
| 140 | ||
| 141 | #endif /* _LINUX_TC_H */ |