int max_dev;
int enum_started;
int enum_ended;
- int type; /* "external" type: DT_STOR_{IDE,USB,etc} */
+ int type; /* "external" type: DT_STOR_{IDE,USB,etc} */
char *name;
};
-static struct stor_spec specs[ENUM_MAX] = { { 0, 0, 0, 0, "" }, };
+static struct stor_spec specs[ENUM_MAX] = { { 0, 0, 0, 0, NULL }, };
void dev_stor_init(void)
{
-#if defined(CONFIG_CMD_IDE)
+#if defined(CONFIG_IDE)
specs[ENUM_IDE].max_dev = CONFIG_SYS_IDE_MAXDEVICE;
specs[ENUM_IDE].enum_started = 0;
specs[ENUM_IDE].enum_ended = 0;
*
* type: storage group type - ENUM_IDE, ENUM_SCSI etc.
*
- * first: if 1 the first device in the storage group is returned (if
- * exists), if 0 the next available device is searched
- *
* more: returns 0/1 depending if there are more devices in this group
* available (for future iterations)
*
* returns: 0/1 depending if device found in this iteration
*/
-static int dev_stor_get(int type, int first, int *more, struct device_info *di)
+static int dev_stor_get(int type, int *more, struct device_info *di)
{
- int found = 0;
- *more = 0;
-
- int i;
-
struct blk_desc *dd;
+ int found = 0;
+ int i = 0;
- if (first) {
- di->cookie = (void *)blk_get_dev(specs[type].name, 0);
- if (di->cookie == NULL)
- return 0;
- else
- found = 1;
-
- /* provide hint if there are more devices in
- * this group to enumerate */
- if (1 < specs[type].max_dev)
- *more = 1;
+ /* Wasn't configured for this type, return 0 directly */
+ if (specs[type].name == NULL)
+ return 0;
- } else {
- for (i = 0; i < specs[type].max_dev; i++)
+ if (di->cookie != NULL) {
+ /* Find the last device we've returned */
+ for (i = 0; i < specs[type].max_dev; i++) {
if (di->cookie ==
(void *)blk_get_dev(specs[type].name, i)) {
- /* previous cookie found -- advance to the
- * next device, if possible */
-
- if (++i >= specs[type].max_dev) {
- /* out of range, no more to enum */
- di->cookie = NULL;
- break;
- }
-
- di->cookie = (void *)blk_get_dev(
- specs[type].name, i);
- if (di->cookie == NULL)
- return 0;
- else
- found = 1;
-
- /* provide hint if there are more devices in
- * this group to enumerate */
- if ((i + 1) < specs[type].max_dev)
- *more = 1;
-
+ i += 1;
break;
}
+ }
}
- if (found) {
- di->type = specs[type].type;
+ for (; i < specs[type].max_dev; i++) {
+ di->cookie = (void *)blk_get_dev(specs[type].name, i);
if (di->cookie != NULL) {
- dd = (struct blk_desc *)di->cookie;
- if (dd->type == DEV_TYPE_UNKNOWN) {
- debugf("device instance exists, but is not active..");
- found = 0;
- } else {
- di->di_stor.block_count = dd->lba;
- di->di_stor.block_size = dd->blksz;
- }
+ found = 1;
+ break;
}
+ }
+
+ if (i == specs[type].max_dev)
+ *more = 0;
+ else
+ *more = 1;
- } else
+ if (found) {
+ di->type = specs[type].type;
+
+ dd = (struct blk_desc *)di->cookie;
+ if (dd->type == DEV_TYPE_UNKNOWN) {
+ debugf("device instance exists, but is not active..");
+ found = 0;
+ } else {
+ di->di_stor.block_count = dd->lba;
+ di->di_stor.block_size = dd->blksz;
+ }
+ } else {
di->cookie = NULL;
+ }
return found;
}
-/*
- * returns: ENUM_IDE, ENUM_USB etc. based on struct blk_desc
- */
+/* returns: ENUM_IDE, ENUM_USB etc. based on struct blk_desc */
+
static int dev_stor_type(struct blk_desc *dd)
{
int i, j;
}
-/*
- * returns: 0/1 whether cookie points to some device in this group
- */
+/* returns: 0/1 whether cookie points to some device in this group */
+
static int dev_is_stor(int type, struct device_info *di)
{
return (dev_stor_type(di->cookie) == type) ? 1 : 0;
*/
if (di->cookie == NULL) {
-
debugf("group%d - enum restart\n", type);
/*
* 1. Enumeration (re-)started: take the first available
* device, if exists
*/
- found = dev_stor_get(type, 1, &more, di);
+ found = dev_stor_get(type, &more, di);
specs[type].enum_started = 1;
} else if (dev_is_stor(type, di)) {
-
debugf("group%d - enum continued for the next device\n", type);
if (specs[type].enum_ended) {
}
/* 2a. Attempt to take a next available device in the group */
- found = dev_stor_get(type, 0, &more, di);
+ found = dev_stor_get(type, &more, di);
} else {
-
if (specs[type].enum_ended) {
debugf("group %d - already enumerated, skipping\n", type);
return 0;
/*
* 2b. If enumerating devices in this group did not
* happen before, it means the cookie pointed to a
- * device frome some other group (another storage
+ * device from some other group (another storage
* group, or network); in this case try to take the
* first available device from our group
*/
* Attempt to take the first device in this group:
*'first element' flag is set
*/
- found = dev_stor_get(type, 1, &more, di);
+ found = dev_stor_get(type, &more, di);
} else {
errf("group%d - out of order iteration\n", type);
if (found)
debugf("device found, returning cookie 0x%08x\n",
- (u_int32_t)di->cookie);
+ (u_int32_t)di->cookie);
else
debugf("no device found\n");
{
int i;
- /*
- * check: ide, usb, scsi, mmc
- */
+ /* check: ide, usb, scsi, mmc */
for (i = ENUM_IDE; i < ENUM_MAX; i ++) {
if (dev_enum_stor(i, di))
return 1;
if (!dev_stor_is_valid(type, dd))
return 0;
+#ifdef CONFIG_BLK
+ return blk_dread(dd, start, len, buf);
+#else
if ((dd->block_read) == NULL) {
debugf("no block_read() for device 0x%08x\n", cookie);
return 0;
}
return dd->block_read(dd, start, len, buf);
+#endif /* defined(CONFIG_BLK) */
}
projects / people / ms / u-boot.git / blobdiff