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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
152 lines
3.4 KiB
C
152 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* This file contains dummy implementations of SCSI functions requried so
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* that CONFIG_SCSI can be enabled for sandbox.
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*/
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#define LOG_CATEGORY UCLASS_SCSI
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#include <common.h>
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#include <dm.h>
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#include <os.h>
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#include <malloc.h>
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#include <scsi.h>
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#include <scsi_emul.h>
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enum {
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SANDBOX_SCSI_BLOCK_LEN = 512,
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SANDBOX_SCSI_BUF_SIZE = 512,
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};
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/**
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* struct sandbox_scsi_priv
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*
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* @eminfo: emulator state
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* @pathanme: Path to the backing file, e.g. 'scsi.img'
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* @fd: File descriptor of backing file
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*/
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struct sandbox_scsi_priv {
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struct scsi_emul_info eminfo;
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const char *pathname;
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int fd;
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};
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static int sandbox_scsi_exec(struct udevice *dev, struct scsi_cmd *req)
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{
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struct sandbox_scsi_priv *priv = dev_get_priv(dev);
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struct scsi_emul_info *info = &priv->eminfo;
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int ret;
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if (req->lun || req->target)
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return -EIO;
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ret = sb_scsi_emul_command(info, req, req->cmdlen);
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if (ret < 0) {
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log_debug("SCSI command 0x%02x ret errno %d\n", req->cmd[0],
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ret);
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return ret;
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} else if (ret == SCSI_EMUL_DO_READ && priv->fd != -1) {
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long bytes_read;
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log_debug("read %x %x\n", info->seek_block, info->read_len);
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os_lseek(priv->fd, info->seek_block * info->block_size,
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OS_SEEK_SET);
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bytes_read = os_read(priv->fd, req->pdata, info->buff_used);
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if (bytes_read < 0)
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return bytes_read;
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if (bytes_read != info->buff_used)
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return -EIO;
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} else if (!ret) {
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req->pdata = info->buff;
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info->phase = SCSIPH_STATUS;
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log_debug("sending buf\n");
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} else {
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log_debug("error\n");
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return -EIO;
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}
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return 0;
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}
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static int sandbox_scsi_bus_reset(struct udevice *dev)
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{
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/* Not implemented */
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return 0;
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}
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static int sandbox_scsi_of_to_plat(struct udevice *dev)
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{
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struct sandbox_scsi_priv *priv = dev_get_priv(dev);
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priv->pathname = dev_read_string(dev, "sandbox,filepath");
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return 0;
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}
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static int sandbox_scsi_probe(struct udevice *dev)
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{
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struct scsi_plat *scsi_plat = dev_get_uclass_plat(dev);
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struct sandbox_scsi_priv *priv = dev_get_priv(dev);
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struct scsi_emul_info *info = &priv->eminfo;
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int ret;
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scsi_plat->max_id = 2;
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scsi_plat->max_lun = 3;
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scsi_plat->max_bytes_per_req = 1 << 20;
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info->vendor = "SANDBOX";
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info->product = "FAKE DISK";
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info->buff = malloc(SANDBOX_SCSI_BUF_SIZE);
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if (!info->buff)
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return log_ret(-ENOMEM);
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info->block_size = SANDBOX_SCSI_BLOCK_LEN;
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if (priv->pathname) {
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priv->fd = os_open(priv->pathname, OS_O_RDONLY);
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if (priv->fd != -1) {
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ret = os_get_filesize(priv->pathname, &info->file_size);
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if (ret)
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return log_msg_ret("sz", ret);
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}
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} else {
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priv->fd = -1;
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}
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log_debug("filename: %s, fd %d\n", priv->pathname, priv->fd);
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return 0;
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}
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static int sandbox_scsi_remove(struct udevice *dev)
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{
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struct sandbox_scsi_priv *priv = dev_get_priv(dev);
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struct scsi_emul_info *info = &priv->eminfo;
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free(info->buff);
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return 0;
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}
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struct scsi_ops sandbox_scsi_ops = {
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.exec = sandbox_scsi_exec,
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.bus_reset = sandbox_scsi_bus_reset,
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};
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static const struct udevice_id sanbox_scsi_ids[] = {
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{ .compatible = "sandbox,scsi" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_scsi) = {
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.name = "sandbox_scsi",
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.id = UCLASS_SCSI,
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.ops = &sandbox_scsi_ops,
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.of_match = sanbox_scsi_ids,
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.of_to_plat = sandbox_scsi_of_to_plat,
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.probe = sandbox_scsi_probe,
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.remove = sandbox_scsi_remove,
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.priv_auto = sizeof(struct sandbox_scsi_priv),
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};
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