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Index of /anon_sym/anon/sys/devices/virtual/tty/tty8/subsystem/tty34
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Zt?_I|+ , /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _SCSI_SCSI_CMND_H
#define _SCSI_SCSI_CMND_H
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
struct Scsi_Host;
/*
* MAX_COMMAND_SIZE is:
* The longest fixed-length SCSI CDB as per the SCSI standard.
* fixed-length means: commands that their size can be determined
* by their opcode and the CDB does not carry a length specifier, (unlike
* the VARIABLE_LENGTH_CMD(0x7f) command). This is actually not exactly
* true and the SCSI standard also defines extended commands and
* vendor specific commands that can be bigger than 16 bytes. The kernel
* will support these using the same infrastructure used for VARLEN CDB's.
* So in effect MAX_COMMAND_SIZE means the maximum size command scsi-ml
* supports without specifying a cmd_len by ULD's
*/
#define MAX_COMMAND_SIZE 16
#if (MAX_COMMAND_SIZE > BLK_MAX_CDB)
# error MAX_COMMAND_SIZE can not be bigger than BLK_MAX_CDB
#endif
struct scsi_data_buffer {
struct sg_table table;
unsigned length;
};
/* embedded in scsi_cmnd */
struct scsi_pointer {
char *ptr; /* data pointer */
int this_residual; /* left in this buffer */
struct scatterlist *buffer; /* which buffer */
int buffers_residual; /* how many buffers left */
dma_addr_t dma_handle;
volatile int Status;
volatile int Message;
volatile int have_data_in;
volatile int sent_command;
volatile int phase;
};
/* for scmd->flags */
#define SCMD_TAGGED (1 << 0)
#define SCMD_INITIALIZED (1 << 1)
#define SCMD_LAST (1 << 2)
/*
* libata uses SCSI EH to fetch sense data for successful commands.
* SCSI EH should not overwrite scmd->result when SCMD_FORCE_EH_SUCCESS is set.
*/
#define SCMD_FORCE_EH_SUCCESS (1 << 3)
#define SCMD_FAIL_IF_RECOVERING (1 << 4)
/* flags preserved across unprep / reprep */
#define SCMD_PRESERVED_FLAGS (SCMD_INITIALIZED | SCMD_FAIL_IF_RECOVERING)
/* for scmd->state */
#define SCMD_STATE_COMPLETE 0
#define SCMD_STATE_INFLIGHT 1
enum scsi_cmnd_submitter {
SUBMITTED_BY_BLOCK_LAYER = 0,
SUBMITTED_BY_SCSI_ERROR_HANDLER = 1,
SUBMITTED_BY_SCSI_RESET_IOCTL = 2,
} __packed;
struct scsi_cmnd {
struct scsi_request req;
struct scsi_device *device;
struct list_head eh_entry; /* entry for the host eh_abort_list/eh_cmd_q */
struct