#include <linux/ioport.h>
#include <asm/ebus.h>
#include <asm/oplib.h>
-#include <asm/prom.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#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");
+MODULE_AUTHOR
+ ("Eric Brower <ebrower@usa.net>");
+MODULE_DESCRIPTION
+ ("User-programmable flash device on Sun Microsystems boardsets");
+MODULE_SUPPORTED_DEVICE
+ ("userflash");
+MODULE_LICENSE
+ ("GPL");
static LIST_HEAD(device_list);
struct uflash_dev {
- char *name; /* device name */
+ char * name; /* device name */
struct map_info map; /* mtd map info */
- struct mtd_info *mtd; /* mtd info */
+ struct mtd_info * mtd; /* mtd info */
+ struct list_head list;
};
struct map_info uflash_map_templ = {
- .name = "SUNW,???-????",
- .size = UFLASH_WINDOW_SIZE,
- .bankwidth = UFLASH_BUSWIDTH,
+ .name = "SUNW,???-????",
+ .size = UFLASH_WINDOW_SIZE,
+ .bankwidth = UFLASH_BUSWIDTH,
};
-int uflash_devinit(struct linux_ebus_device *edev, struct device_node *dp)
+int uflash_devinit(struct linux_ebus_device* edev)
{
- struct uflash_dev *up;
- struct resource *res;
+ int iTmp, nregs;
+ struct linux_prom_registers regs[2];
+ struct uflash_dev *pdev;
+
+ iTmp = prom_getproperty(
+ edev->prom_node, "reg", (void *)regs, sizeof(regs));
+ if ((iTmp % sizeof(regs[0])) != 0) {
+ printk("%s: Strange reg property size %d\n",
+ UFLASH_DEVNAME, iTmp);
+ return -ENODEV;
+ }
- res = &edev->resource[0];
+ nregs = iTmp / sizeof(regs[0]);
- if (edev->num_addrs != 1) {
+ if (nregs != 1) {
/* Non-CFI userflash device-- once I find one we
* can work on supporting it.
*/
- printk("%s: unsupported device at 0x%llx (%d regs): " \
+ printk("%s: unsupported device at 0x%lx (%d regs): " \
"email ebrower@usa.net\n",
- dp->full_name, (unsigned long long)res->start,
- edev->num_addrs);
-
+ UFLASH_DEVNAME, edev->resource[0].start, nregs);
return -ENODEV;
}
- up = kzalloc(sizeof(struct uflash_dev), GFP_KERNEL);
- if (!up)
- return -ENOMEM;
+ if(0 == (pdev = kmalloc(sizeof(struct uflash_dev), GFP_KERNEL))) {
+ printk("%s: unable to kmalloc new device\n", UFLASH_DEVNAME);
+ 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 = 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;
+ memcpy(&pdev->map, &uflash_map_templ, sizeof(uflash_map_templ));
+ pdev->map.size = regs[0].reg_size;
+
+ iTmp = prom_getproplen(edev->prom_node, "model");
+ pdev->name = kmalloc(iTmp, GFP_KERNEL);
+ prom_getstring(edev->prom_node, "model", pdev->name, iTmp);
+ if(0 != pdev->name && 0 < strlen(pdev->name)) {
+ pdev->map.name = pdev->name;
+ }
+ pdev->map.phys = edev->resource[0].start;
+ pdev->map.virt = ioremap_nocache(edev->resource[0].start, pdev->map.size);
+ if(0 == pdev->map.virt) {
+ printk("%s: failed to map device\n", __FUNCTION__);
+ kfree(pdev->name);
+ kfree(pdev);
+ return(-1);
}
- simple_map_init(&up->map);
+ simple_map_init(&pdev->map);
/* MTD registration */
- up->mtd = do_map_probe("cfi_probe", &up->map);
- if (!up->mtd) {
- iounmap(up->map.virt);
- kfree(up);
-
- return -ENXIO;
+ pdev->mtd = do_map_probe("cfi_probe", &pdev->map);
+ if(0 == pdev->mtd) {
+ iounmap(pdev->map.virt);
+ kfree(pdev->name);
+ kfree(pdev);
+ return(-ENXIO);
}
- up->mtd->owner = THIS_MODULE;
+ list_add(&pdev->list, &device_list);
- add_mtd_device(up->mtd);
+ pdev->mtd->owner = THIS_MODULE;
- dev_set_drvdata(&edev->ofdev.dev, up);
-
- return 0;
+ add_mtd_device(pdev->mtd);
+ return(0);
}
-static int __devinit uflash_probe(struct of_device *dev, const struct of_device_id *match)
+static int __init uflash_init(void)
{
- struct linux_ebus_device *edev = to_ebus_device(&dev->dev);
- struct device_node *dp = dev->node;
+ struct linux_ebus *ebus = NULL;
+ struct linux_ebus_device *edev = NULL;
+
+ for_each_ebus(ebus) {
+ for_each_ebusdev(edev, ebus) {
+ if (!strcmp(edev->prom_name, UFLASH_OBPNAME)) {
+ if(0 > prom_getproplen(edev->prom_node, "user")) {
+ DEBUG(2, "%s: ignoring device at 0x%lx\n",
+ UFLASH_DEVNAME, edev->resource[0].start);
+ } else {
+ uflash_devinit(edev);
+ }
+ }
+ }
+ }
- if (of_find_property(dp, "user", NULL))
+ if(list_empty(&device_list)) {
+ printk("%s: unable to locate device\n", UFLASH_DEVNAME);
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;
+ 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)
+static void __exit uflash_cleanup(void)
{
- return of_register_driver(&uflash_driver, &ebus_bus_type);
-}
-
-static void __exit uflash_exit(void)
-{
- of_unregister_driver(&uflash_driver);
+ struct list_head *udevlist;
+ struct uflash_dev *udev;
+
+ list_for_each(udevlist, &device_list) {
+ udev = list_entry(udevlist, struct uflash_dev, list);
+ DEBUG(2, "%s: removing device %s\n",
+ UFLASH_DEVNAME, udev->name);
+
+ if(0 != udev->mtd) {
+ del_mtd_device(udev->mtd);
+ map_destroy(udev->mtd);
+ }
+ if(0 != udev->map.virt) {
+ iounmap(udev->map.virt);
+ udev->map.virt = NULL;
+ }
+ kfree(udev->name);
+ kfree(udev);
+ }
}
module_init(uflash_init);
-module_exit(uflash_exit);
+module_exit(uflash_cleanup);
git://git.onelab.eu / linux-2.6.git / blobdiff