#include <dm/device-internal.h>
#include <dm/lists.h>
+static const char *if_typename_str[IF_TYPE_COUNT] = {
+ [IF_TYPE_IDE] = "ide",
+ [IF_TYPE_SCSI] = "scsi",
+ [IF_TYPE_ATAPI] = "atapi",
+ [IF_TYPE_USB] = "usb",
+ [IF_TYPE_DOC] = "doc",
+ [IF_TYPE_MMC] = "mmc",
+ [IF_TYPE_SD] = "sd",
+ [IF_TYPE_SATA] = "sata",
+ [IF_TYPE_HOST] = "host",
+ [IF_TYPE_SYSTEMACE] = "ace",
+};
+
+static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
+ [IF_TYPE_IDE] = UCLASS_INVALID,
+ [IF_TYPE_SCSI] = UCLASS_INVALID,
+ [IF_TYPE_ATAPI] = UCLASS_INVALID,
+ [IF_TYPE_USB] = UCLASS_MASS_STORAGE,
+ [IF_TYPE_DOC] = UCLASS_INVALID,
+ [IF_TYPE_MMC] = UCLASS_MMC,
+ [IF_TYPE_SD] = UCLASS_INVALID,
+ [IF_TYPE_SATA] = UCLASS_AHCI,
+ [IF_TYPE_HOST] = UCLASS_ROOT,
+ [IF_TYPE_SYSTEMACE] = UCLASS_INVALID,
+};
+
+static enum if_type if_typename_to_iftype(const char *if_typename)
+{
+ int i;
+
+ for (i = 0; i < IF_TYPE_COUNT; i++) {
+ if (if_typename_str[i] &&
+ !strcmp(if_typename, if_typename_str[i]))
+ return i;
+ }
+
+ return IF_TYPE_UNKNOWN;
+}
+
+static enum uclass_id if_type_to_uclass_id(enum if_type if_type)
+{
+ return if_type_uclass_id[if_type];
+}
+
+struct blk_desc *blk_get_devnum_by_type(enum if_type if_type, int devnum)
+{
+ struct blk_desc *desc;
+ struct udevice *dev;
+ int ret;
+
+ ret = blk_get_device(if_type, devnum, &dev);
+ if (ret)
+ return NULL;
+ desc = dev_get_uclass_platdata(dev);
+
+ return desc;
+}
+
+/*
+ * This function is complicated with driver model. We look up the interface
+ * name in a local table. This gives us an interface type which we can match
+ * against the uclass of the block device's parent.
+ */
+struct blk_desc *blk_get_devnum_by_typename(const char *if_typename, int devnum)
+{
+ enum uclass_id uclass_id;
+ enum if_type if_type;
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ if_type = if_typename_to_iftype(if_typename);
+ if (if_type == IF_TYPE_UNKNOWN) {
+ debug("%s: Unknown interface type '%s'\n", __func__,
+ if_typename);
+ return NULL;
+ }
+ uclass_id = if_type_to_uclass_id(if_type);
+ if (uclass_id == UCLASS_INVALID) {
+ debug("%s: Unknown uclass for interface type'\n",
+ if_typename_str[if_type]);
+ return NULL;
+ }
+
+ ret = uclass_get(UCLASS_BLK, &uc);
+ if (ret)
+ return NULL;
+ uclass_foreach_dev(dev, uc) {
+ struct blk_desc *desc = dev_get_uclass_platdata(dev);
+
+ debug("%s: if_type=%d, devnum=%d: %s, %d, %d\n", __func__,
+ if_type, devnum, dev->name, desc->if_type, desc->devnum);
+ if (desc->devnum != devnum)
+ continue;
+
+ /* Find out the parent device uclass */
+ if (device_get_uclass_id(dev->parent) != uclass_id) {
+ debug("%s: parent uclass %d, this dev %d\n", __func__,
+ device_get_uclass_id(dev->parent), uclass_id);
+ continue;
+ }
+
+ if (device_probe(dev))
+ return NULL;
+
+ debug("%s: Device desc %p\n", __func__, desc);
+ return desc;
+ }
+ debug("%s: No device found\n", __func__);
+
+ return NULL;
+}
+
+/**
+ * get_desc() - Get the block device descriptor for the given device number
+ *
+ * @if_type: Interface type
+ * @devnum: Device number (0 = first)
+ * @descp: Returns block device descriptor on success
+ * @return 0 on success, -ENODEV if there is no such device and no device
+ * with a higher device number, -ENOENT if there is no such device but there
+ * is one with a higher number, or other -ve on other error.
+ */
+static int get_desc(enum if_type if_type, int devnum, struct blk_desc **descp)
+{
+ bool found_more = false;
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ *descp = NULL;
+ ret = uclass_get(UCLASS_BLK, &uc);
+ if (ret)
+ return ret;
+ uclass_foreach_dev(dev, uc) {
+ struct blk_desc *desc = dev_get_uclass_platdata(dev);
+
+ debug("%s: if_type=%d, devnum=%d: %s, %d, %d\n", __func__,
+ if_type, devnum, dev->name, desc->if_type, desc->devnum);
+ if (desc->if_type == if_type) {
+ if (desc->devnum == devnum) {
+ ret = device_probe(dev);
+ if (ret)
+ return ret;
+
+ } else if (desc->devnum > devnum) {
+ found_more = true;
+ }
+ }
+ }
+
+ return found_more ? -ENOENT : -ENODEV;
+}
+
+int blk_list_part(enum if_type if_type)
+{
+ struct blk_desc *desc;
+ int devnum, ok;
+ int ret;
+
+ for (ok = 0, devnum = 0;; ++devnum) {
+ ret = get_desc(if_type, devnum, &desc);
+ if (ret == -ENODEV)
+ break;
+ else if (ret)
+ continue;
+ if (desc->part_type != PART_TYPE_UNKNOWN) {
+ ++ok;
+ if (devnum)
+ putc('\n');
+ part_print(desc);
+ }
+ }
+ if (!ok)
+ return -ENODEV;
+
+ return 0;
+}
+
+int blk_print_part_devnum(enum if_type if_type, int devnum)
+{
+ struct blk_desc *desc;
+ int ret;
+
+ ret = get_desc(if_type, devnum, &desc);
+ if (ret)
+ return ret;
+ if (desc->type == DEV_TYPE_UNKNOWN)
+ return -ENOENT;
+ part_print(desc);
+
+ return 0;
+}
+
+void blk_list_devices(enum if_type if_type)
+{
+ struct blk_desc *desc;
+ int ret;
+ int i;
+
+ for (i = 0;; ++i) {
+ ret = get_desc(if_type, i, &desc);
+ if (ret == -ENODEV)
+ break;
+ else if (ret)
+ continue;
+ if (desc->type == DEV_TYPE_UNKNOWN)
+ continue; /* list only known devices */
+ printf("Device %d: ", i);
+ dev_print(desc);
+ }
+}
+
+int blk_print_device_num(enum if_type if_type, int devnum)
+{
+ struct blk_desc *desc;
+ int ret;
+
+ ret = get_desc(if_type, devnum, &desc);
+ if (ret)
+ return ret;
+ printf("\nIDE device %d: ", devnum);
+ dev_print(desc);
+
+ return 0;
+}
+
+int blk_show_device(enum if_type if_type, int devnum)
+{
+ struct blk_desc *desc;
+ int ret;
+
+ printf("\nDevice %d: ", devnum);
+ ret = get_desc(if_type, devnum, &desc);
+ if (ret == -ENODEV || ret == -ENOENT) {
+ printf("unknown device\n");
+ return -ENODEV;
+ }
+ if (ret)
+ return ret;
+ dev_print(desc);
+
+ if (desc->type == DEV_TYPE_UNKNOWN)
+ return -ENOENT;
+
+ return 0;
+}
+
+ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start,
+ lbaint_t blkcnt, void *buffer)
+{
+ struct blk_desc *desc;
+ ulong n;
+ int ret;
+
+ ret = get_desc(if_type, devnum, &desc);
+ if (ret)
+ return ret;
+ n = blk_dread(desc, start, blkcnt, buffer);
+ if (IS_ERR_VALUE(n))
+ return n;
+
+ /* flush cache after read */
+ flush_cache((ulong)buffer, blkcnt * desc->blksz);
+
+ return n;
+}
+
+ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start,
+ lbaint_t blkcnt, const void *buffer)
+{
+ struct blk_desc *desc;
+ int ret;
+
+ ret = get_desc(if_type, devnum, &desc);
+ if (ret)
+ return ret;
+ return blk_dwrite(desc, start, blkcnt, buffer);
+}
+
int blk_first_device(int if_type, struct udevice **devp)
{
struct blk_desc *desc;
projects / u-boot.git / commitdiff