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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2023 Addiva Elektronik
* Author: Tobias Waldekranz <tobias@waldekranz.com>
*/
#include <blk.h>
#include <blkmap.h>
#include <command.h>
#include <malloc.h>
#include <dm/device.h>
static int blkmap_curr_dev;
struct map_ctx {
struct udevice *dev;
lbaint_t blknr, blkcnt;
};
typedef int (*map_parser_fn)(struct map_ctx *ctx, int argc, char *const argv[]);
struct map_handler {
const char *name;
map_parser_fn fn;
};
static int do_blkmap_map_linear(struct map_ctx *ctx, int argc,
char *const argv[])
{
struct blk_desc *lbd;
int err, ldevnum;
lbaint_t lblknr;
if (argc < 4)
return CMD_RET_USAGE;
ldevnum = dectoul(argv[2], NULL);
lblknr = dectoul(argv[3], NULL);
lbd = blk_get_devnum_by_uclass_idname(argv[1], ldevnum);
if (!lbd) {
printf("Found no device matching \"%s %d\"\n",
argv[1], ldevnum);
return CMD_RET_FAILURE;
}
err = blkmap_map_linear(ctx->dev, ctx->blknr, ctx->blkcnt,
lbd->bdev, lblknr);
if (err) {
printf("Unable to map \"%s %d\" at block 0x" LBAF ": %d\n",
argv[1], ldevnum, ctx->blknr, err);
return CMD_RET_FAILURE;
}
printf("Block 0x" LBAF "+0x" LBAF " mapped to block 0x" LBAF " of \"%s %d\"\n",
ctx->blknr, ctx->blkcnt, lblknr, argv[1], ldevnum);
return CMD_RET_SUCCESS;
}
static int do_blkmap_map_mem(struct map_ctx *ctx, int argc, char *const argv[])
{
phys_addr_t addr;
int err;
if (argc < 2)
return CMD_RET_USAGE;
addr = hextoul(argv[1], NULL);
err = blkmap_map_pmem(ctx->dev, ctx->blknr, ctx->blkcnt, addr);
if (err) {
printf("Unable to map %#llx at block 0x" LBAF ": %d\n",
(unsigned long long)addr, ctx->blknr, err);
return CMD_RET_FAILURE;
}
printf("Block 0x" LBAF "+0x" LBAF " mapped to %#llx\n",
ctx->blknr, ctx->blkcnt, (unsigned long long)addr);
return CMD_RET_SUCCESS;
}
static struct map_handler map_handlers[] = {
{ .name = "linear", .fn = do_blkmap_map_linear },
{ .name = "mem", .fn = do_blkmap_map_mem },
{ .name = NULL }
};
static int do_blkmap_map(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct map_handler *handler;
struct map_ctx ctx;
if (argc < 5)
return CMD_RET_USAGE;
ctx.dev = blkmap_from_label(argv[1]);
if (!ctx.dev) {
printf("\"%s\" is not the name of any known blkmap\n", argv[1]);
return CMD_RET_FAILURE;
}
ctx.blknr = hextoul(argv[2], NULL);
ctx.blkcnt = hextoul(argv[3], NULL);
argc -= 4;
argv += 4;
for (handler = map_handlers; handler->name; handler++) {
if (!strcmp(handler->name, argv[0]))
return handler->fn(&ctx, argc, argv);
}
printf("Unknown map type \"%s\"\n", argv[0]);
return CMD_RET_USAGE;
}
static int do_blkmap_create(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
const char *label;
int err;
if (argc != 2)
return CMD_RET_USAGE;
label = argv[1];
err = blkmap_create(label, NULL);
if (err) {
printf("Unable to create \"%s\": %d\n", label, err);
return CMD_RET_FAILURE;
}
printf("Created \"%s\"\n", label);
return CMD_RET_SUCCESS;
}
static int do_blkmap_destroy(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct udevice *dev;
const char *label;
int err;
if (argc != 2)
return CMD_RET_USAGE;
label = argv[1];
dev = blkmap_from_label(label);
if (!dev) {
printf("\"%s\" is not the name of any known blkmap\n", label);
return CMD_RET_FAILURE;
}
err = blkmap_destroy(dev);
if (err) {
printf("Unable to destroy \"%s\": %d\n", label, err);
return CMD_RET_FAILURE;
}
printf("Destroyed \"%s\"\n", label);
return CMD_RET_SUCCESS;
}
static int do_blkmap_get(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct udevice *dev;
const char *label;
int err;
if (argc < 3)
return CMD_RET_USAGE;
label = argv[1];
dev = blkmap_from_label(label);
if (!dev) {
printf("\"%s\" is not the name of any known blkmap\n", label);
return CMD_RET_FAILURE;
}
if (!strcmp(argv[2], "dev")) {
if (argc == 3) {
printf("%d\n", dev_seq(dev));
} else {
err = env_set_hex(argv[3], dev_seq(dev));
if (err)
return CMD_RET_FAILURE;
}
} else {
return CMD_RET_USAGE;
}
return CMD_RET_SUCCESS;
}
static int do_blkmap_common(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
/* The subcommand parsing pops the original argv[0] ("blkmap")
* which blk_common_cmd expects. Push it back again.
*/
argc++;
argv--;
return blk_common_cmd(argc, argv, UCLASS_BLKMAP, &blkmap_curr_dev);
}
U_BOOT_CMD_WITH_SUBCMDS(
blkmap, "Composeable virtual block devices",
"info - list configured devices\n"
"blkmap part - list available partitions on current blkmap device\n"
"blkmap dev [<dev>] - show or set current blkmap device\n"
"blkmap read <addr> <blk#> <cnt>\n"
"blkmap write <addr> <blk#> <cnt>\n"
"blkmap get <label> dev [<var>] - store device number in variable\n"
"blkmap create <label> - create device\n"
"blkmap destroy <label> - destroy device\n"
"blkmap map <label> <blk#> <cnt> linear <interface> <dev> <blk#> - device mapping\n"
"blkmap map <label> <blk#> <cnt> mem <addr> - memory mapping\n",
U_BOOT_SUBCMD_MKENT(info, 2, 1, do_blkmap_common),
U_BOOT_SUBCMD_MKENT(part, 2, 1, do_blkmap_common),
U_BOOT_SUBCMD_MKENT(dev, 4, 1, do_blkmap_common),
U_BOOT_SUBCMD_MKENT(read, 5, 1, do_blkmap_common),
U_BOOT_SUBCMD_MKENT(write, 5, 1, do_blkmap_common),
U_BOOT_SUBCMD_MKENT(get, 5, 1, do_blkmap_get),
U_BOOT_SUBCMD_MKENT(create, 2, 1, do_blkmap_create),
U_BOOT_SUBCMD_MKENT(destroy, 2, 1, do_blkmap_destroy),
U_BOOT_SUBCMD_MKENT(map, 32, 1, do_blkmap_map));
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