forked from luck/tmp_suning_uos_patched
b454cc6636
This is a set of changes to convert support for the TURBOchannel bus to the driver model. It implements the usual set of calls similar to what other bus drivers have: tc_register_driver(), tc_unregister_driver(), etc. All the platform-specific bits have been removed and headers from asm-mips/dec/ have been merged into linux/tc.h, which should be included by drivers. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
/*
|
|
* 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. */
|
|
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 */
|