Commit b454cc66 authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Ralf Baechle

[TC] MIPS: TURBOchannel update to the driver model

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: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 5986a2ec
...@@ -3287,6 +3287,11 @@ L: vtun@office.satix.net ...@@ -3287,6 +3287,11 @@ L: vtun@office.satix.net
W: http://vtun.sourceforge.net/tun W: http://vtun.sourceforge.net/tun
S: Maintained S: Maintained
TURBOCHANNEL SUBSYSTEM
P: Maciej W. Rozycki
M: macro@linux-mips.org
S: Maintained
U14-34F SCSI DRIVER U14-34F SCSI DRIVER
P: Dario Ballabio P: Dario Ballabio
M: ballabio_dario@emc.com M: ballabio_dario@emc.com
......
...@@ -4,7 +4,7 @@ ...@@ -4,7 +4,7 @@
# Object file lists. # Object file lists.
obj-$(CONFIG_TC) += tc.o obj-$(CONFIG_TC) += tc.o tc-driver.o
obj-$(CONFIG_ZS) += zs.o obj-$(CONFIG_ZS) += zs.o
obj-$(CONFIG_VT) += lk201.o lk201-map.o lk201-remap.o obj-$(CONFIG_VT) += lk201.o lk201-map.o lk201-remap.o
......
/*
* TURBOchannel driver services.
*
* Copyright (c) 2005 James Simmons
* Copyright (c) 2006 Maciej W. Rozycki
*
* Loosely based on drivers/dio/dio-driver.c and
* drivers/pci/pci-driver.c.
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/tc.h>
/**
* tc_register_driver - register a new TC driver
* @drv: the driver structure to register
*
* Adds the driver structure to the list of registered drivers
* Returns a negative value on error, otherwise 0.
* If no error occurred, the driver remains registered even if
* no device was claimed during registration.
*/
int tc_register_driver(struct tc_driver *tdrv)
{
return driver_register(&tdrv->driver);
}
EXPORT_SYMBOL(tc_register_driver);
/**
* tc_unregister_driver - unregister a TC driver
* @drv: the driver structure to unregister
*
* Deletes the driver structure from the list of registered TC drivers,
* gives it a chance to clean up by calling its remove() function for
* each device it was responsible for, and marks those devices as
* driverless.
*/
void tc_unregister_driver(struct tc_driver *tdrv)
{
driver_unregister(&tdrv->driver);
}
EXPORT_SYMBOL(tc_unregister_driver);
/**
* tc_match_device - tell if a TC device structure has a matching
* TC device ID structure
* @tdrv: the TC driver to earch for matching TC device ID strings
* @tdev: the TC device structure to match against
*
* Used by a driver to check whether a TC device present in the
* system is in its list of supported devices. Returns the matching
* tc_device_id structure or %NULL if there is no match.
*/
const struct tc_device_id *tc_match_device(struct tc_driver *tdrv,
struct tc_dev *tdev)
{
const struct tc_device_id *id = tdrv->id_table;
if (id) {
while (id->name[0] || id->vendor[0]) {
if (strcmp(tdev->name, id->name) == 0 &&
strcmp(tdev->vendor, id->vendor) == 0)
return id;
id++;
}
}
return NULL;
}
EXPORT_SYMBOL(tc_match_device);
/**
* tc_bus_match - Tell if a device structure has a matching
* TC device ID structure
* @dev: the device structure to match against
* @drv: the device driver to search for matching TC device ID strings
*
* Used by a driver to check whether a TC device present in the
* system is in its list of supported devices. Returns 1 if there
* is a match or 0 otherwise.
*/
static int tc_bus_match(struct device *dev, struct device_driver *drv)
{
struct tc_dev *tdev = to_tc_dev(dev);
struct tc_driver *tdrv = to_tc_driver(drv);
const struct tc_device_id *id;
id = tc_match_device(tdrv, tdev);
if (id)
return 1;
return 0;
}
struct bus_type tc_bus_type = {
.name = "tc",
.match = tc_bus_match,
};
EXPORT_SYMBOL(tc_bus_type);
static int __init tc_driver_init(void)
{
return bus_register(&tc_bus_type);
}
postcore_initcall(tc_driver_init);
This diff is collapsed.
/*
* Interface to the TURBOchannel related routines
*
* 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.
*
* Copyright (c) 1998 Harald Koerfgen
*/
#ifndef __ASM_DEC_TC_H
#define __ASM_DEC_TC_H
/*
* Search for a TURBOchannel Option Module
* with a certain name. Returns slot number
* of the first card not in use or -ENODEV
* if none found.
*/
extern int search_tc_card(const char *);
/*
* Marks the card in slot as used
*/
extern void claim_tc_card(int);
/*
* Marks the card in slot as free
*/
extern void release_tc_card(int);
/*
* Return base address of card in slot
*/
extern unsigned long get_tc_base_addr(int);
/*
* Return interrupt number of slot
*/
extern unsigned long get_tc_irq_nr(int);
/*
* Return TURBOchannel clock frequency in Hz
*/
extern unsigned long get_tc_speed(void);
#endif /* __ASM_DEC_TC_H */
/*
* Various TURBOchannel related stuff
*
* 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.
*
* Information obtained through the get_tcinfo prom call
* created from:
*
* TURBOchannel Firmware Specification
*
* EK-TCAAD-FS-004
* from Digital Equipment Corporation
*
* Copyright (c) 1998 Harald Koerfgen
*/
typedef struct {
int revision;
int clk_period;
int slot_size;
int io_timeout;
int dma_range;
int max_dma_burst;
int parity;
int reserved[4];
} tcinfo;
#define MAX_SLOT 7
typedef struct {
unsigned long base_addr;
unsigned char name[9];
unsigned char vendor[9];
unsigned char firmware[9];
int interrupt;
int flags;
} slot_info;
/*
* Values for flags
*/
#define FREE 1<<0
#define IN_USE 1<<1
/*
* 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.
*
* Offsets for the ROM header locations for
* TURBOchannel cards
*
* created from:
*
* TURBOchannel Firmware Specification
*
* EK-TCAAD-FS-004
* from Digital Equipment Corporation
*
* Jan.1998 Harald Koerfgen
*/
#ifndef __ASM_DEC_TCMODULE_H
#define __ASM_DEC_TCMODULE_H
#define OLDCARD 0x3c0000
#define 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
#endif /* __ASM_DEC_TCMODULE_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. */
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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