mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-13 16:37:30 +00:00
46df024394
At present sandbox is producing a warning about SCSI migration. Drop the legacy code and replace it with a new implementation. Also drop the SATA command, which does not work with driver model. Signed-off-by: Simon Glass <sjg@chromium.org>
151 lines
3.4 KiB
C
151 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* This file contains dummy implementations of SCSI functions requried so
|
|
* that CONFIG_SCSI can be enabled for sandbox.
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_SCSI
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <os.h>
|
|
#include <malloc.h>
|
|
#include <scsi.h>
|
|
#include <scsi_emul.h>
|
|
|
|
enum {
|
|
SANDBOX_SCSI_BLOCK_LEN = 512,
|
|
SANDBOX_SCSI_BUF_SIZE = 512,
|
|
};
|
|
|
|
/**
|
|
* struct sandbox_scsi_priv
|
|
*
|
|
* @eminfo: emulator state
|
|
* @pathanme: Path to the backing file, e.g. 'scsi.img'
|
|
* @fd: File descriptor of backing file
|
|
*/
|
|
struct sandbox_scsi_priv {
|
|
struct scsi_emul_info eminfo;
|
|
const char *pathname;
|
|
int fd;
|
|
};
|
|
|
|
static int sandbox_scsi_exec(struct udevice *dev, struct scsi_cmd *req)
|
|
{
|
|
struct sandbox_scsi_priv *priv = dev_get_priv(dev);
|
|
struct scsi_emul_info *info = &priv->eminfo;
|
|
int ret;
|
|
|
|
if (req->lun || req->target)
|
|
return -EIO;
|
|
ret = sb_scsi_emul_command(info, req, req->cmdlen);
|
|
if (ret < 0) {
|
|
log_debug("SCSI command 0x%02x ret errno %d\n", req->cmd[0],
|
|
ret);
|
|
return ret;
|
|
} else if (ret == SCSI_EMUL_DO_READ && priv->fd != -1) {
|
|
long bytes_read;
|
|
|
|
log_debug("read %x %x\n", info->seek_block, info->read_len);
|
|
os_lseek(priv->fd, info->seek_block * info->block_size,
|
|
OS_SEEK_SET);
|
|
bytes_read = os_read(priv->fd, req->pdata, info->buff_used);
|
|
if (bytes_read < 0)
|
|
return bytes_read;
|
|
if (bytes_read != info->buff_used)
|
|
return -EIO;
|
|
} else if (!ret) {
|
|
req->pdata = info->buff;
|
|
info->phase = SCSIPH_STATUS;
|
|
log_debug("sending buf\n");
|
|
} else {
|
|
log_debug("error\n");
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_scsi_bus_reset(struct udevice *dev)
|
|
{
|
|
/* Not implemented */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_scsi_of_to_plat(struct udevice *dev)
|
|
{
|
|
struct sandbox_scsi_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->pathname = dev_read_string(dev, "sandbox,filepath");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_scsi_probe(struct udevice *dev)
|
|
{
|
|
struct scsi_plat *scsi_plat = dev_get_uclass_plat(dev);
|
|
struct sandbox_scsi_priv *priv = dev_get_priv(dev);
|
|
struct scsi_emul_info *info = &priv->eminfo;
|
|
int ret;
|
|
|
|
scsi_plat->max_id = 2;
|
|
scsi_plat->max_lun = 3;
|
|
scsi_plat->max_bytes_per_req = 1 << 20;
|
|
|
|
info->vendor = "SANDBOX";
|
|
info->product = "FAKE DISK";
|
|
info->buff = malloc(SANDBOX_SCSI_BUF_SIZE);
|
|
if (!info->buff)
|
|
return log_ret(-ENOMEM);
|
|
info->block_size = SANDBOX_SCSI_BLOCK_LEN;
|
|
|
|
if (priv->pathname) {
|
|
priv->fd = os_open(priv->pathname, OS_O_RDONLY);
|
|
if (priv->fd != -1) {
|
|
ret = os_get_filesize(priv->pathname, &info->file_size);
|
|
if (ret)
|
|
return log_msg_ret("sz", ret);
|
|
}
|
|
} else {
|
|
priv->fd = -1;
|
|
}
|
|
log_debug("filename: %s, fd %d\n", priv->pathname, priv->fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_scsi_remove(struct udevice *dev)
|
|
{
|
|
struct sandbox_scsi_priv *priv = dev_get_priv(dev);
|
|
struct scsi_emul_info *info = &priv->eminfo;
|
|
|
|
free(info->buff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct scsi_ops sandbox_scsi_ops = {
|
|
.exec = sandbox_scsi_exec,
|
|
.bus_reset = sandbox_scsi_bus_reset,
|
|
};
|
|
|
|
static const struct udevice_id sanbox_scsi_ids[] = {
|
|
{ .compatible = "sandbox,scsi" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(sandbox_scsi) = {
|
|
.name = "sandbox_scsi",
|
|
.id = UCLASS_SCSI,
|
|
.ops = &sandbox_scsi_ops,
|
|
.of_match = sanbox_scsi_ids,
|
|
.of_to_plat = sandbox_scsi_of_to_plat,
|
|
.probe = sandbox_scsi_probe,
|
|
.remove = sandbox_scsi_remove,
|
|
.priv_auto = sizeof(struct sandbox_scsi_priv),
|
|
};
|