mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 22:40:55 +07:00
59018b6d2a
Once upon a time, the MTD repository was using CVS. This patch therefore removes all usages of the no longer updated CVS keywords from the MTD code. This also includes code that printed them to the user. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
172 lines
3.7 KiB
C
172 lines
3.7 KiB
C
/*
|
|
*
|
|
* sun_uflash - Driver implementation for user-programmable flash
|
|
* present on many Sun Microsystems SME boardsets.
|
|
*
|
|
* This driver does NOT provide access to the OBP-flash for
|
|
* safety reasons-- use <linux>/drivers/sbus/char/flash.c instead.
|
|
*
|
|
* Copyright (c) 2001 Eric Brower (ebrower@usa.net)
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/ioport.h>
|
|
#include <asm/ebus.h>
|
|
#include <asm/oplib.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/io.h>
|
|
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/map.h>
|
|
|
|
#define UFLASH_OBPNAME "flashprom"
|
|
#define UFLASH_DEVNAME "userflash"
|
|
|
|
#define UFLASH_WINDOW_SIZE 0x200000
|
|
#define UFLASH_BUSWIDTH 1 /* EBus is 8-bit */
|
|
|
|
MODULE_AUTHOR("Eric Brower <ebrower@usa.net>");
|
|
MODULE_DESCRIPTION("User-programmable flash device on Sun Microsystems boardsets");
|
|
MODULE_SUPPORTED_DEVICE("userflash");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION("2.0");
|
|
|
|
static LIST_HEAD(device_list);
|
|
struct uflash_dev {
|
|
const char *name; /* device name */
|
|
struct map_info map; /* mtd map info */
|
|
struct mtd_info *mtd; /* mtd info */
|
|
};
|
|
|
|
|
|
struct map_info uflash_map_templ = {
|
|
.name = "SUNW,???-????",
|
|
.size = UFLASH_WINDOW_SIZE,
|
|
.bankwidth = UFLASH_BUSWIDTH,
|
|
};
|
|
|
|
int uflash_devinit(struct linux_ebus_device *edev, struct device_node *dp)
|
|
{
|
|
struct uflash_dev *up;
|
|
struct resource *res;
|
|
|
|
res = &edev->resource[0];
|
|
|
|
if (edev->num_addrs != 1) {
|
|
/* Non-CFI userflash device-- once I find one we
|
|
* can work on supporting it.
|
|
*/
|
|
printk("%s: unsupported device at 0x%llx (%d regs): " \
|
|
"email ebrower@usa.net\n",
|
|
dp->full_name, (unsigned long long)res->start,
|
|
edev->num_addrs);
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
up = kzalloc(sizeof(struct uflash_dev), GFP_KERNEL);
|
|
if (!up)
|
|
return -ENOMEM;
|
|
|
|
/* copy defaults and tweak parameters */
|
|
memcpy(&up->map, &uflash_map_templ, sizeof(uflash_map_templ));
|
|
up->map.size = (res->end - res->start) + 1UL;
|
|
|
|
up->name = of_get_property(dp, "model", NULL);
|
|
if (up->name && 0 < strlen(up->name))
|
|
up->map.name = (char *)up->name;
|
|
|
|
up->map.phys = res->start;
|
|
|
|
up->map.virt = ioremap_nocache(res->start, up->map.size);
|
|
if (!up->map.virt) {
|
|
printk("%s: Failed to map device.\n", dp->full_name);
|
|
kfree(up);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
simple_map_init(&up->map);
|
|
|
|
/* MTD registration */
|
|
up->mtd = do_map_probe("cfi_probe", &up->map);
|
|
if (!up->mtd) {
|
|
iounmap(up->map.virt);
|
|
kfree(up);
|
|
|
|
return -ENXIO;
|
|
}
|
|
|
|
up->mtd->owner = THIS_MODULE;
|
|
|
|
add_mtd_device(up->mtd);
|
|
|
|
dev_set_drvdata(&edev->ofdev.dev, up);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit uflash_probe(struct of_device *dev, const struct of_device_id *match)
|
|
{
|
|
struct linux_ebus_device *edev = to_ebus_device(&dev->dev);
|
|
struct device_node *dp = dev->node;
|
|
|
|
if (of_find_property(dp, "user", NULL))
|
|
return -ENODEV;
|
|
|
|
return uflash_devinit(edev, dp);
|
|
}
|
|
|
|
static int __devexit uflash_remove(struct of_device *dev)
|
|
{
|
|
struct uflash_dev *up = dev_get_drvdata(&dev->dev);
|
|
|
|
if (up->mtd) {
|
|
del_mtd_device(up->mtd);
|
|
map_destroy(up->mtd);
|
|
}
|
|
if (up->map.virt) {
|
|
iounmap(up->map.virt);
|
|
up->map.virt = NULL;
|
|
}
|
|
|
|
kfree(up);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct of_device_id uflash_match[] = {
|
|
{
|
|
.name = UFLASH_OBPNAME,
|
|
},
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, uflash_match);
|
|
|
|
static struct of_platform_driver uflash_driver = {
|
|
.name = UFLASH_DEVNAME,
|
|
.match_table = uflash_match,
|
|
.probe = uflash_probe,
|
|
.remove = __devexit_p(uflash_remove),
|
|
};
|
|
|
|
static int __init uflash_init(void)
|
|
{
|
|
return of_register_driver(&uflash_driver, &ebus_bus_type);
|
|
}
|
|
|
|
static void __exit uflash_exit(void)
|
|
{
|
|
of_unregister_driver(&uflash_driver);
|
|
}
|
|
|
|
module_init(uflash_init);
|
|
module_exit(uflash_exit);
|