mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 11:00:15 +00:00
ee5041451e
The ext4 file system requires log2blksz to be set. So when setting the block size on the block descriptor we should fill this field too. This fixes a problem with EFI block devices providing ext4 partitions, cf. https://lists.denx.de/pipermail/u-boot/2019-October/387702.html. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
657 lines
14 KiB
C
657 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <blk.h>
|
|
#include <dm.h>
|
|
#include <dm/device-internal.h>
|
|
#include <dm/lists.h>
|
|
#include <dm/uclass-internal.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_NVME] = "nvme",
|
|
[IF_TYPE_EFI] = "efi",
|
|
[IF_TYPE_VIRTIO] = "virtio",
|
|
};
|
|
|
|
static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
|
|
[IF_TYPE_IDE] = UCLASS_IDE,
|
|
[IF_TYPE_SCSI] = UCLASS_SCSI,
|
|
[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_NVME] = UCLASS_NVME,
|
|
[IF_TYPE_EFI] = UCLASS_EFI,
|
|
[IF_TYPE_VIRTIO] = UCLASS_VIRTIO,
|
|
};
|
|
|
|
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];
|
|
}
|
|
|
|
const char *blk_get_if_type_name(enum if_type if_type)
|
|
{
|
|
return if_typename_str[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;
|
|
}
|
|
|
|
/**
|
|
* blk_get_by_device() - Get the block device descriptor for the given device
|
|
* @dev: Instance of a storage device
|
|
*
|
|
* Return: With block device descriptor on success , NULL if there is no such
|
|
* block device.
|
|
*/
|
|
struct blk_desc *blk_get_by_device(struct udevice *dev)
|
|
{
|
|
struct udevice *child_dev;
|
|
|
|
device_foreach_child(child_dev, dev) {
|
|
if (device_get_uclass_id(child_dev) != UCLASS_BLK)
|
|
continue;
|
|
|
|
return dev_get_uclass_platdata(child_dev);
|
|
}
|
|
|
|
debug("%s: No block 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;
|
|
|
|
*descp = desc;
|
|
return 0;
|
|
} else if (desc->devnum > devnum) {
|
|
found_more = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return found_more ? -ENOENT : -ENODEV;
|
|
}
|
|
|
|
int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
ret = blk_get_device(if_type, devnum, &dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return blk_select_hwpart(dev, hwpart);
|
|
}
|
|
|
|
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;
|
|
|
|
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_select_hwpart(struct udevice *dev, int hwpart)
|
|
{
|
|
const struct blk_ops *ops = blk_get_ops(dev);
|
|
|
|
if (!ops)
|
|
return -ENOSYS;
|
|
if (!ops->select_hwpart)
|
|
return 0;
|
|
|
|
return ops->select_hwpart(dev, hwpart);
|
|
}
|
|
|
|
int blk_dselect_hwpart(struct blk_desc *desc, int hwpart)
|
|
{
|
|
return blk_select_hwpart(desc->bdev, hwpart);
|
|
}
|
|
|
|
int blk_first_device(int if_type, struct udevice **devp)
|
|
{
|
|
struct blk_desc *desc;
|
|
int ret;
|
|
|
|
ret = uclass_find_first_device(UCLASS_BLK, devp);
|
|
if (ret)
|
|
return ret;
|
|
if (!*devp)
|
|
return -ENODEV;
|
|
do {
|
|
desc = dev_get_uclass_platdata(*devp);
|
|
if (desc->if_type == if_type)
|
|
return 0;
|
|
ret = uclass_find_next_device(devp);
|
|
if (ret)
|
|
return ret;
|
|
} while (*devp);
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
int blk_next_device(struct udevice **devp)
|
|
{
|
|
struct blk_desc *desc;
|
|
int ret, if_type;
|
|
|
|
desc = dev_get_uclass_platdata(*devp);
|
|
if_type = desc->if_type;
|
|
do {
|
|
ret = uclass_find_next_device(devp);
|
|
if (ret)
|
|
return ret;
|
|
if (!*devp)
|
|
return -ENODEV;
|
|
desc = dev_get_uclass_platdata(*devp);
|
|
if (desc->if_type == if_type)
|
|
return 0;
|
|
} while (1);
|
|
}
|
|
|
|
int blk_find_device(int if_type, int devnum, struct udevice **devp)
|
|
{
|
|
struct uclass *uc;
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
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 && desc->devnum == devnum) {
|
|
*devp = dev;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
int blk_get_device(int if_type, int devnum, struct udevice **devp)
|
|
{
|
|
int ret;
|
|
|
|
ret = blk_find_device(if_type, devnum, devp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return device_probe(*devp);
|
|
}
|
|
|
|
unsigned long blk_dread(struct blk_desc *block_dev, lbaint_t start,
|
|
lbaint_t blkcnt, void *buffer)
|
|
{
|
|
struct udevice *dev = block_dev->bdev;
|
|
const struct blk_ops *ops = blk_get_ops(dev);
|
|
ulong blks_read;
|
|
|
|
if (!ops->read)
|
|
return -ENOSYS;
|
|
|
|
if (blkcache_read(block_dev->if_type, block_dev->devnum,
|
|
start, blkcnt, block_dev->blksz, buffer))
|
|
return blkcnt;
|
|
blks_read = ops->read(dev, start, blkcnt, buffer);
|
|
if (blks_read == blkcnt)
|
|
blkcache_fill(block_dev->if_type, block_dev->devnum,
|
|
start, blkcnt, block_dev->blksz, buffer);
|
|
|
|
return blks_read;
|
|
}
|
|
|
|
unsigned long blk_dwrite(struct blk_desc *block_dev, lbaint_t start,
|
|
lbaint_t blkcnt, const void *buffer)
|
|
{
|
|
struct udevice *dev = block_dev->bdev;
|
|
const struct blk_ops *ops = blk_get_ops(dev);
|
|
|
|
if (!ops->write)
|
|
return -ENOSYS;
|
|
|
|
blkcache_invalidate(block_dev->if_type, block_dev->devnum);
|
|
return ops->write(dev, start, blkcnt, buffer);
|
|
}
|
|
|
|
unsigned long blk_derase(struct blk_desc *block_dev, lbaint_t start,
|
|
lbaint_t blkcnt)
|
|
{
|
|
struct udevice *dev = block_dev->bdev;
|
|
const struct blk_ops *ops = blk_get_ops(dev);
|
|
|
|
if (!ops->erase)
|
|
return -ENOSYS;
|
|
|
|
blkcache_invalidate(block_dev->if_type, block_dev->devnum);
|
|
return ops->erase(dev, start, blkcnt);
|
|
}
|
|
|
|
int blk_get_from_parent(struct udevice *parent, struct udevice **devp)
|
|
{
|
|
struct udevice *dev;
|
|
enum uclass_id id;
|
|
int ret;
|
|
|
|
device_find_first_child(parent, &dev);
|
|
if (!dev) {
|
|
debug("%s: No block device found for parent '%s'\n", __func__,
|
|
parent->name);
|
|
return -ENODEV;
|
|
}
|
|
id = device_get_uclass_id(dev);
|
|
if (id != UCLASS_BLK) {
|
|
debug("%s: Incorrect uclass %s for block device '%s'\n",
|
|
__func__, uclass_get_name(id), dev->name);
|
|
return -ENOTBLK;
|
|
}
|
|
ret = device_probe(dev);
|
|
if (ret)
|
|
return ret;
|
|
*devp = dev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int blk_find_max_devnum(enum if_type if_type)
|
|
{
|
|
struct udevice *dev;
|
|
int max_devnum = -ENODEV;
|
|
struct uclass *uc;
|
|
int ret;
|
|
|
|
ret = uclass_get(UCLASS_BLK, &uc);
|
|
if (ret)
|
|
return ret;
|
|
uclass_foreach_dev(dev, uc) {
|
|
struct blk_desc *desc = dev_get_uclass_platdata(dev);
|
|
|
|
if (desc->if_type == if_type && desc->devnum > max_devnum)
|
|
max_devnum = desc->devnum;
|
|
}
|
|
|
|
return max_devnum;
|
|
}
|
|
|
|
int blk_next_free_devnum(enum if_type if_type)
|
|
{
|
|
int ret;
|
|
|
|
ret = blk_find_max_devnum(if_type);
|
|
if (ret == -ENODEV)
|
|
return 0;
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return ret + 1;
|
|
}
|
|
|
|
static int blk_claim_devnum(enum if_type if_type, int devnum)
|
|
{
|
|
struct udevice *dev;
|
|
struct uclass *uc;
|
|
int ret;
|
|
|
|
ret = uclass_get(UCLASS_BLK, &uc);
|
|
if (ret)
|
|
return ret;
|
|
uclass_foreach_dev(dev, uc) {
|
|
struct blk_desc *desc = dev_get_uclass_platdata(dev);
|
|
|
|
if (desc->if_type == if_type && desc->devnum == devnum) {
|
|
int next = blk_next_free_devnum(if_type);
|
|
|
|
if (next < 0)
|
|
return next;
|
|
desc->devnum = next;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
int blk_create_device(struct udevice *parent, const char *drv_name,
|
|
const char *name, int if_type, int devnum, int blksz,
|
|
lbaint_t lba, struct udevice **devp)
|
|
{
|
|
struct blk_desc *desc;
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
if (devnum == -1) {
|
|
devnum = blk_next_free_devnum(if_type);
|
|
} else {
|
|
ret = blk_claim_devnum(if_type, devnum);
|
|
if (ret < 0 && ret != -ENOENT)
|
|
return ret;
|
|
}
|
|
if (devnum < 0)
|
|
return devnum;
|
|
ret = device_bind_driver(parent, drv_name, name, &dev);
|
|
if (ret)
|
|
return ret;
|
|
desc = dev_get_uclass_platdata(dev);
|
|
desc->if_type = if_type;
|
|
desc->blksz = blksz;
|
|
desc->log2blksz = LOG2(desc->blksz);
|
|
desc->lba = lba;
|
|
desc->part_type = PART_TYPE_UNKNOWN;
|
|
desc->bdev = dev;
|
|
desc->devnum = devnum;
|
|
*devp = dev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int blk_create_devicef(struct udevice *parent, const char *drv_name,
|
|
const char *name, int if_type, int devnum, int blksz,
|
|
lbaint_t lba, struct udevice **devp)
|
|
{
|
|
char dev_name[30], *str;
|
|
int ret;
|
|
|
|
snprintf(dev_name, sizeof(dev_name), "%s.%s", parent->name, name);
|
|
str = strdup(dev_name);
|
|
if (!str)
|
|
return -ENOMEM;
|
|
|
|
ret = blk_create_device(parent, drv_name, str, if_type, devnum,
|
|
blksz, lba, devp);
|
|
if (ret) {
|
|
free(str);
|
|
return ret;
|
|
}
|
|
device_set_name_alloced(*devp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int blk_unbind_all(int if_type)
|
|
{
|
|
struct uclass *uc;
|
|
struct udevice *dev, *next;
|
|
int ret;
|
|
|
|
ret = uclass_get(UCLASS_BLK, &uc);
|
|
if (ret)
|
|
return ret;
|
|
uclass_foreach_dev_safe(dev, next, uc) {
|
|
struct blk_desc *desc = dev_get_uclass_platdata(dev);
|
|
|
|
if (desc->if_type == if_type) {
|
|
ret = device_remove(dev, DM_REMOVE_NORMAL);
|
|
if (ret)
|
|
return ret;
|
|
ret = device_unbind(dev);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int blk_post_probe(struct udevice *dev)
|
|
{
|
|
#if defined(CONFIG_PARTITIONS) && defined(CONFIG_HAVE_BLOCK_DEVICE)
|
|
struct blk_desc *desc = dev_get_uclass_platdata(dev);
|
|
|
|
part_init(desc);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(blk) = {
|
|
.id = UCLASS_BLK,
|
|
.name = "blk",
|
|
.post_probe = blk_post_probe,
|
|
.per_device_platdata_auto_alloc_size = sizeof(struct blk_desc),
|
|
};
|