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hw/ufs: Modify lu.c to share codes with SCSI subsystem

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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>
This commit is contained in:
Jeuk Kim 2023-10-19 23:28:06 +09:00
parent c60be6e3e3
commit 096434fea1
6 changed files with 334 additions and 1479 deletions
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36
hw/ufs/ufs.h
View file

@ -16,7 +16,8 @@
#include "block/ufs.h"
#define UFS_MAX_LUS 32
#define UFS_BLOCK_SIZE 4096
#define UFS_BLOCK_SIZE_SHIFT 12
#define UFS_BLOCK_SIZE (1 << UFS_BLOCK_SIZE_SHIFT)
typedef struct UfsBusClass {
BusClass parent_class;
@ -24,7 +25,7 @@ typedef struct UfsBusClass {
} UfsBusClass;
typedef struct UfsBus {
SCSIBus parent_bus;
BusState parent_bus;
} UfsBus;
#define TYPE_UFS_BUS "ufs-bus"
@ -55,19 +56,22 @@ typedef struct UfsRequest {
/* for scsi command */
QEMUSGList *sg;
uint32_t data_len;
} UfsRequest;
struct UfsLu;
typedef UfsReqResult (*UfsScsiOp)(struct UfsLu *, UfsRequest *);
typedef struct UfsLu {
SCSIDevice qdev;
DeviceState qdev;
uint8_t lun;
UnitDescriptor unit_desc;
SCSIBus bus;
SCSIDevice *scsi_dev;
BlockConf conf;
UfsScsiOp scsi_op;
} UfsLu;
typedef struct UfsWLu {
SCSIDevice qdev;
uint8_t lun;
} UfsWLu;
typedef struct UfsParams {
char *serial;
uint8_t nutrs; /* Number of UTP Transfer Request Slots */
@ -84,10 +88,10 @@ typedef struct UfsHc {
UfsRequest *req_list;
UfsLu *lus[UFS_MAX_LUS];
UfsWLu *report_wlu;
UfsWLu *dev_wlu;
UfsWLu *boot_wlu;
UfsWLu *rpmb_wlu;
UfsLu report_wlu;
UfsLu dev_wlu;
UfsLu boot_wlu;
UfsLu rpmb_wlu;
DeviceDescriptor device_desc;
GeometryDescriptor geometry_desc;
Attributes attributes;
@ -104,9 +108,6 @@ typedef struct UfsHc {
#define TYPE_UFS_LU "ufs-lu"
#define UFSLU(obj) OBJECT_CHECK(UfsLu, (obj), TYPE_UFS_LU)
#define TYPE_UFS_WLU "ufs-wlu"
#define UFSWLU(obj) OBJECT_CHECK(UfsWLu, (obj), TYPE_UFS_WLU)
typedef enum UfsQueryFlagPerm {
UFS_QUERY_FLAG_NONE = 0x0,
UFS_QUERY_FLAG_READ = 0x1,
@ -128,4 +129,9 @@ static inline bool is_wlun(uint8_t lun)
lun == UFS_UPIU_RPMB_WLUN);
}
void ufs_build_upiu_header(UfsRequest *req, uint8_t trans_type, uint8_t flags,
uint8_t response, uint8_t scsi_status,
uint16_t data_segment_length);
void ufs_complete_req(UfsRequest *req, UfsReqResult req_result);
void ufs_init_wlu(UfsLu *wlu, uint8_t wlun);
#endif /* HW_UFS_UFS_H */