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9a2010941f
Add a function to obtain the block device for SCSI. Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com> Acked-by: Casey Connolly <casey.connolly@linaro.org>
71 lines
1.3 KiB
C
71 lines
1.3 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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* Copyright (c) 2016 Xilinx, Inc
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* Written by Michal Simek
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*
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* Based on ahci-uclass.c
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*/
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#define LOG_CATEGORY UCLASS_SCSI
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#include <blk.h>
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#include <dm.h>
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#include <part.h>
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#include <scsi.h>
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int scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
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{
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struct scsi_ops *ops = scsi_get_ops(dev);
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if (!ops->exec)
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return -ENOSYS;
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return ops->exec(dev, pccb);
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}
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int scsi_get_blk_by_uuid(const char *uuid,
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struct blk_desc **blk_desc_ptr,
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struct disk_partition *part_info_ptr)
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{
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static int is_scsi_scanned;
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struct blk_desc *blk;
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int i, ret;
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if (!is_scsi_scanned) {
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scsi_scan(false /* no verbose */);
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is_scsi_scanned = 1;
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}
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for (i = 0; i < blk_find_max_devnum(UCLASS_SCSI) + 1; i++) {
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ret = blk_get_desc(UCLASS_SCSI, i, &blk);
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if (ret)
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continue;
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ret = part_get_info_by_uuid(blk, uuid, part_info_ptr);
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if (ret > 0) {
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*blk_desc_ptr = blk;
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return 0;
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}
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}
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return -1;
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}
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int scsi_bus_reset(struct udevice *dev)
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{
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struct scsi_ops *ops = scsi_get_ops(dev);
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if (!ops->bus_reset)
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return -ENOSYS;
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return ops->bus_reset(dev);
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}
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UCLASS_DRIVER(scsi) = {
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.id = UCLASS_SCSI,
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.name = "scsi",
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.per_device_plat_auto = sizeof(struct scsi_plat),
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};
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