096434fea1
This patch removes the code that ufs-lu was duplicating from scsi-hd and allows them to share code. It makes ufs-lu have a virtual scsi-bus and scsi-hd internally. This allows scsi related commands to be passed thorugh to the scsi-hd. The query request and nop command work the same as the existing logic. Well-known lus do not have a virtual scsi-bus and scsi-hd, and handle the necessary scsi commands by emulating them directly. Signed-off-by: Jeuk Kim <jeuk20.kim@samsung.com>
138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
/*
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* QEMU UFS
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*
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* Copyright (c) 2023 Samsung Electronics Co., Ltd. All rights reserved.
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*
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* Written by Jeuk Kim <jeuk20.kim@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef HW_UFS_UFS_H
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#define HW_UFS_UFS_H
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#include "hw/pci/pci_device.h"
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#include "hw/scsi/scsi.h"
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#include "block/ufs.h"
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#define UFS_MAX_LUS 32
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#define UFS_BLOCK_SIZE_SHIFT 12
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#define UFS_BLOCK_SIZE (1 << UFS_BLOCK_SIZE_SHIFT)
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typedef struct UfsBusClass {
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BusClass parent_class;
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bool (*parent_check_address)(BusState *bus, DeviceState *dev, Error **errp);
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} UfsBusClass;
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typedef struct UfsBus {
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BusState parent_bus;
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} UfsBus;
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#define TYPE_UFS_BUS "ufs-bus"
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DECLARE_OBJ_CHECKERS(UfsBus, UfsBusClass, UFS_BUS, TYPE_UFS_BUS)
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typedef enum UfsRequestState {
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UFS_REQUEST_IDLE = 0,
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UFS_REQUEST_READY = 1,
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UFS_REQUEST_RUNNING = 2,
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UFS_REQUEST_COMPLETE = 3,
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UFS_REQUEST_ERROR = 4,
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} UfsRequestState;
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typedef enum UfsReqResult {
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UFS_REQUEST_SUCCESS = 0,
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UFS_REQUEST_FAIL = 1,
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UFS_REQUEST_NO_COMPLETE = 2,
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} UfsReqResult;
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typedef struct UfsRequest {
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struct UfsHc *hc;
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UfsRequestState state;
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int slot;
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UtpTransferReqDesc utrd;
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UtpUpiuReq req_upiu;
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UtpUpiuRsp rsp_upiu;
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/* for scsi command */
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QEMUSGList *sg;
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uint32_t data_len;
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} UfsRequest;
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struct UfsLu;
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typedef UfsReqResult (*UfsScsiOp)(struct UfsLu *, UfsRequest *);
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typedef struct UfsLu {
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DeviceState qdev;
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uint8_t lun;
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UnitDescriptor unit_desc;
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SCSIBus bus;
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SCSIDevice *scsi_dev;
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BlockConf conf;
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UfsScsiOp scsi_op;
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} UfsLu;
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typedef struct UfsParams {
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char *serial;
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uint8_t nutrs; /* Number of UTP Transfer Request Slots */
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uint8_t nutmrs; /* Number of UTP Task Management Request Slots */
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} UfsParams;
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typedef struct UfsHc {
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PCIDevice parent_obj;
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UfsBus bus;
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MemoryRegion iomem;
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UfsReg reg;
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UfsParams params;
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uint32_t reg_size;
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UfsRequest *req_list;
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UfsLu *lus[UFS_MAX_LUS];
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UfsLu report_wlu;
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UfsLu dev_wlu;
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UfsLu boot_wlu;
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UfsLu rpmb_wlu;
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DeviceDescriptor device_desc;
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GeometryDescriptor geometry_desc;
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Attributes attributes;
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Flags flags;
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qemu_irq irq;
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QEMUBH *doorbell_bh;
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QEMUBH *complete_bh;
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} UfsHc;
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#define TYPE_UFS "ufs"
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#define UFS(obj) OBJECT_CHECK(UfsHc, (obj), TYPE_UFS)
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#define TYPE_UFS_LU "ufs-lu"
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#define UFSLU(obj) OBJECT_CHECK(UfsLu, (obj), TYPE_UFS_LU)
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typedef enum UfsQueryFlagPerm {
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UFS_QUERY_FLAG_NONE = 0x0,
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UFS_QUERY_FLAG_READ = 0x1,
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UFS_QUERY_FLAG_SET = 0x2,
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UFS_QUERY_FLAG_CLEAR = 0x4,
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UFS_QUERY_FLAG_TOGGLE = 0x8,
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} UfsQueryFlagPerm;
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typedef enum UfsQueryAttrPerm {
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UFS_QUERY_ATTR_NONE = 0x0,
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UFS_QUERY_ATTR_READ = 0x1,
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UFS_QUERY_ATTR_WRITE = 0x2,
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} UfsQueryAttrPerm;
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static inline bool is_wlun(uint8_t lun)
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{
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return (lun == UFS_UPIU_REPORT_LUNS_WLUN ||
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lun == UFS_UPIU_UFS_DEVICE_WLUN || lun == UFS_UPIU_BOOT_WLUN ||
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lun == UFS_UPIU_RPMB_WLUN);
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}
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void ufs_build_upiu_header(UfsRequest *req, uint8_t trans_type, uint8_t flags,
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uint8_t response, uint8_t scsi_status,
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uint16_t data_segment_length);
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void ufs_complete_req(UfsRequest *req, UfsReqResult req_result);
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void ufs_init_wlu(UfsLu *wlu, uint8_t wlun);
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#endif /* HW_UFS_UFS_H */
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