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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>
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Emulation of enough SCSI commands to find and read from a unit
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*
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* Copyright 2022 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*
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* implementation of SCSI functions required so that CONFIG_SCSI can be enabled
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* 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 <log.h>
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#include <scsi.h>
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#include <scsi_emul.h>
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int sb_scsi_emul_command(struct scsi_emul_info *info,
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const struct scsi_cmd *req, int len)
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{
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int ret = 0;
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info->buff_used = 0;
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log_debug("emul %x\n", *req->cmd);
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switch (*req->cmd) {
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case SCSI_INQUIRY: {
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struct scsi_inquiry_resp *resp = (void *)info->buff;
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info->alloc_len = req->cmd[4];
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memset(resp, '\0', sizeof(*resp));
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resp->data_format = 1;
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resp->additional_len = 0x1f;
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strncpy(resp->vendor, info->vendor, sizeof(resp->vendor));
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strncpy(resp->product, info->product, sizeof(resp->product));
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strncpy(resp->revision, "1.0", sizeof(resp->revision));
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info->buff_used = sizeof(*resp);
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break;
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}
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case SCSI_TST_U_RDY:
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break;
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case SCSI_RD_CAPAC: {
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struct scsi_read_capacity_resp *resp = (void *)info->buff;
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uint blocks;
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if (info->file_size)
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blocks = info->file_size / info->block_size - 1;
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else
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blocks = 0;
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resp->last_block_addr = cpu_to_be32(blocks);
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resp->block_len = cpu_to_be32(info->block_size);
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info->buff_used = sizeof(*resp);
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break;
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}
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case SCSI_READ10: {
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const struct scsi_read10_req *read_req = (void *)req;
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info->seek_block = be32_to_cpu(read_req->lba);
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info->read_len = be16_to_cpu(read_req->xfer_len);
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info->buff_used = info->read_len * info->block_size;
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ret = SCSI_EMUL_DO_READ;
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break;
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}
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case SCSI_WRITE10: {
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const struct scsi_write10_req *write_req = (void *)req;
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info->seek_block = be32_to_cpu(write_req->lba);
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info->write_len = be16_to_cpu(write_req->xfer_len);
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info->buff_used = info->write_len * info->block_size;
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ret = SCSI_EMUL_DO_WRITE;
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break;
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}
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default:
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debug("Command not supported: %x\n", req->cmd[0]);
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ret = -EPROTONOSUPPORT;
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}
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if (ret >= 0)
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info->phase = info->transfer_len ? SCSIPH_DATA : SCSIPH_STATUS;
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log_debug(" - done %x: ret=%d\n", *req->cmd, ret);
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return ret;
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}
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