linux/drivers/scsi/qla4xxx/ql4_iocb.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * QLogic iSCSI HBA Driver
 * Copyright (c)  2003-2013 QLogic Corporation
 */

#include "ql4_def.h"
#include "ql4_glbl.h"
#include "ql4_dbg.h"
#include "ql4_inline.h"

#include <scsi/scsi_tcq.h>

static int
qla4xxx_space_in_req_ring(struct scsi_qla_host *ha, uint16_t req_cnt)
{ … }

static void qla4xxx_advance_req_ring_ptr(struct scsi_qla_host *ha)
{ … }

/**
 * qla4xxx_get_req_pkt - returns a valid entry in request queue.
 * @ha: Pointer to host adapter structure.
 * @queue_entry: Pointer to pointer to queue entry structure
 *
 * This routine performs the following tasks:
 *	- returns the current request_in pointer (if queue not full)
 *	- advances the request_in pointer
 *	- checks for queue full
 **/
static int qla4xxx_get_req_pkt(struct scsi_qla_host *ha,
			       struct queue_entry **queue_entry)
{ … }

/**
 * qla4xxx_send_marker_iocb - issues marker iocb to HBA
 * @ha: Pointer to host adapter structure.
 * @ddb_entry: Pointer to device database entry
 * @lun: SCSI LUN
 * @mrkr_mod: marker identifier
 *
 * This routine issues a marker IOCB.
 **/
int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,
	struct ddb_entry *ddb_entry, uint64_t lun, uint16_t mrkr_mod)
{ … }

static struct continuation_t1_entry *
qla4xxx_alloc_cont_entry(struct scsi_qla_host *ha)
{ … }

static uint16_t qla4xxx_calc_request_entries(uint16_t dsds)
{ … }

static void qla4xxx_build_scsi_iocbs(struct srb *srb,
				     struct command_t3_entry *cmd_entry,
				     uint16_t tot_dsds)
{ … }

void qla4_83xx_queue_iocb(struct scsi_qla_host *ha)
{ … }

void qla4_83xx_complete_iocb(struct scsi_qla_host *ha)
{ … }

/**
 * qla4_82xx_queue_iocb - Tell ISP it's got new request(s)
 * @ha: pointer to host adapter structure.
 *
 * This routine notifies the ISP that one or more new request
 * queue entries have been placed on the request queue.
 **/
void qla4_82xx_queue_iocb(struct scsi_qla_host *ha)
{ … }

/**
 * qla4_82xx_complete_iocb - Tell ISP we're done with response(s)
 * @ha: pointer to host adapter structure.
 *
 * This routine notifies the ISP that one or more response/completion
 * queue entries have been processed by the driver.
 * This also clears the interrupt.
 **/
void qla4_82xx_complete_iocb(struct scsi_qla_host *ha)
{ … }

/**
 * qla4xxx_queue_iocb - Tell ISP it's got new request(s)
 * @ha: pointer to host adapter structure.
 *
 * This routine is notifies the ISP that one or more new request
 * queue entries have been placed on the request queue.
 **/
void qla4xxx_queue_iocb(struct scsi_qla_host *ha)
{ … }

/**
 * qla4xxx_complete_iocb - Tell ISP we're done with response(s)
 * @ha: pointer to host adapter structure.
 *
 * This routine is notifies the ISP that one or more response/completion
 * queue entries have been processed by the driver.
 * This also clears the interrupt.
 **/
void qla4xxx_complete_iocb(struct scsi_qla_host *ha)
{ … }

/**
 * qla4xxx_send_command_to_isp - issues command to HBA
 * @ha: pointer to host adapter structure.
 * @srb: pointer to SCSI Request Block to be sent to ISP
 *
 * This routine is called by qla4xxx_queuecommand to build an ISP
 * command and pass it to the ISP for execution.
 **/
int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb)
{ … }

int qla4xxx_send_passthru0(struct iscsi_task *task)
{ … }

static struct mrb *qla4xxx_get_new_mrb(struct scsi_qla_host *ha)
{ … }

static int qla4xxx_send_mbox_iocb(struct scsi_qla_host *ha, struct mrb *mrb,
				  uint32_t *in_mbox)
{ … }

int qla4xxx_ping_iocb(struct scsi_qla_host *ha, uint32_t options,
		      uint32_t payload_size, uint32_t pid, uint8_t *ipaddr)
{ … }