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android-kvm / linux / b806bec53881f493c550107b8455afc7b7900009 / . / drivers / scsi / qla2xxx / qla_iocb.c
blob: ed604f2185bf2519f70c1d527acafeede2ba7e95 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-only
/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2014 QLogic Corporation
*/
#include "qla_def.h"
#include "qla_target.h"
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_tcq.h>
/**
* qla2x00_get_cmd_direction() - Determine control_flag data direction.
* @sp: SCSI command
*
* Returns the proper CF_* direction based on CDB.
*/
static inline uint16_t
qla2x00_get_cmd_direction(srb_t *sp)
{
uint16_t cflags;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->vha;
cflags = 0;
/* Set transfer direction */
if (cmd->sc_data_direction == DMA_TO_DEVICE) {
cflags = CF_WRITE;
vha->qla_stats.output_bytes += scsi_bufflen(cmd);
vha->qla_stats.output_requests++;
} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
cflags = CF_READ;
vha->qla_stats.input_bytes += scsi_bufflen(cmd);
vha->qla_stats.input_requests++;
}
return (cflags);
}
/**
* qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and
* Continuation Type 0 IOCBs to allocate.
*
* @dsds: number of data segment descriptors needed
*
* Returns the number of IOCB entries needed to store @dsds.
*/
uint16_t
qla2x00_calc_iocbs_32(uint16_t dsds)
{
uint16_t iocbs;
iocbs = 1;
if (dsds > 3) {
iocbs += (dsds - 3) / 7;
if ((dsds - 3) % 7)
iocbs++;
}
return (iocbs);
}
/**
* qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and
* Continuation Type 1 IOCBs to allocate.
*
* @dsds: number of data segment descriptors needed
*
* Returns the number of IOCB entries needed to store @dsds.
*/
uint16_t
qla2x00_calc_iocbs_64(uint16_t dsds)
{
uint16_t iocbs;
iocbs = 1;
if (dsds > 2) {
iocbs += (dsds - 2) / 5;
if ((dsds - 2) % 5)
iocbs++;
}
return (iocbs);
}
/**
* qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB.
* @vha: HA context
*
* Returns a pointer to the Continuation Type 0 IOCB packet.
*/
static inline cont_entry_t *
qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha)
{
cont_entry_t *cont_pkt;
struct req_que *req = vha->req;
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else {
req->ring_ptr++;
}
cont_pkt = (cont_entry_t *)req->ring_ptr;
/* Load packet defaults. */
put_unaligned_le32(CONTINUE_TYPE, &cont_pkt->entry_type);
return (cont_pkt);
}
/**
* qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
* @vha: HA context
* @req: request queue
*
* Returns a pointer to the continuation type 1 IOCB packet.
*/
cont_a64_entry_t *
qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req)
{
cont_a64_entry_t *cont_pkt;
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else {
req->ring_ptr++;
}
cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
/* Load packet defaults. */
put_unaligned_le32(IS_QLAFX00(vha->hw) ? CONTINUE_A64_TYPE_FX00 :
CONTINUE_A64_TYPE, &cont_pkt->entry_type);
return (cont_pkt);
}
inline int
qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts)
{
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
/* We always use DIFF Bundling for best performance */
*fw_prot_opts = 0;
/* Translate SCSI opcode to a protection opcode */
switch (scsi_get_prot_op(cmd)) {
case SCSI_PROT_READ_STRIP:
*fw_prot_opts |= PO_MODE_DIF_REMOVE;
break;
case SCSI_PROT_WRITE_INSERT:
*fw_prot_opts |= PO_MODE_DIF_INSERT;
break;
case SCSI_PROT_READ_INSERT:
*fw_prot_opts |= PO_MODE_DIF_INSERT;
break;
case SCSI_PROT_WRITE_STRIP:
*fw_prot_opts |= PO_MODE_DIF_REMOVE;
break;
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
if (cmd->prot_flags & SCSI_PROT_IP_CHECKSUM)
*fw_prot_opts |= PO_MODE_DIF_TCP_CKSUM;
else
*fw_prot_opts |= PO_MODE_DIF_PASS;
break;
default: /* Normal Request */
*fw_prot_opts |= PO_MODE_DIF_PASS;
break;
}
if (!(cmd->prot_flags & SCSI_PROT_GUARD_CHECK))
*fw_prot_opts |= PO_DISABLE_GUARD_CHECK;
return scsi_prot_sg_count(cmd);
}
/*
* qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit
* capable IOCB types.
*
* @sp: SRB command to process
* @cmd_pkt: Command type 2 IOCB
* @tot_dsds: Total number of segments to transfer
*/
void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt,
uint16_t tot_dsds)
{
uint16_t avail_dsds;
struct dsd32 *cur_dsd;
scsi_qla_host_t *vha;
struct scsi_cmnd *cmd;
struct scatterlist *sg;
int i;
cmd = GET_CMD_SP(sp);
/* Update entry type to indicate Command Type 2 IOCB */
put_unaligned_le32(COMMAND_TYPE, &cmd_pkt->entry_type);
/* No data transfer */
if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
cmd_pkt->byte_count = cpu_to_le32(0);
return;
}
vha = sp->vha;
cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
/* Three DSDs are available in the Command Type 2 IOCB */
avail_dsds = ARRAY_SIZE(cmd_pkt->dsd32);
cur_dsd = cmd_pkt->dsd32;
/* Load data segments */
scsi_for_each_sg(cmd, sg, tot_dsds, i) {
cont_entry_t *cont_pkt;
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Seven DSDs are available in the Continuation
* Type 0 IOCB.
*/
cont_pkt = qla2x00_prep_cont_type0_iocb(vha);
cur_dsd = cont_pkt->dsd;
avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
}
append_dsd32(&cur_dsd, sg);
avail_dsds--;
}
}
/**
* qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit
* capable IOCB types.
*
* @sp: SRB command to process
* @cmd_pkt: Command type 3 IOCB
* @tot_dsds: Total number of segments to transfer
*/
void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt,
uint16_t tot_dsds)
{
uint16_t avail_dsds;
struct dsd64 *cur_dsd;
scsi_qla_host_t *vha;
struct scsi_cmnd *cmd;
struct scatterlist *sg;
int i;
cmd = GET_CMD_SP(sp);
/* Update entry type to indicate Command Type 3 IOCB */
put_unaligned_le32(COMMAND_A64_TYPE, &cmd_pkt->entry_type);
/* No data transfer */
if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
cmd_pkt->byte_count = cpu_to_le32(0);
return;
}
vha = sp->vha;
cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
/* Two DSDs are available in the Command Type 3 IOCB */
avail_dsds = ARRAY_SIZE(cmd_pkt->dsd64);
cur_dsd = cmd_pkt->dsd64;
/* Load data segments */
scsi_for_each_sg(cmd, sg, tot_dsds, i) {
cont_a64_entry_t *cont_pkt;
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Five DSDs are available in the Continuation
* Type 1 IOCB.
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
cur_dsd = cont_pkt->dsd;
avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
}
/*
* Find the first handle that is not in use, starting from
* req->current_outstanding_cmd + 1. The caller must hold the lock that is
* associated with @req.
*/
uint32_t qla2xxx_get_next_handle(struct req_que *req)
{
uint32_t index, handle = req->current_outstanding_cmd;
for (index = 1; index < req->num_outstanding_cmds; index++) {
handle++;
if (handle == req->num_outstanding_cmds)
handle = 1;
if (!req->outstanding_cmds[handle])
return handle;
}
return 0;
}
/**
* qla2x00_start_scsi() - Send a SCSI command to the ISP
* @sp: command to send to the ISP
*
* Returns non-zero if a failure occurred, else zero.
*/
int
qla2x00_start_scsi(srb_t *sp)
{
int nseg;
unsigned long flags;
scsi_qla_host_t *vha;
struct scsi_cmnd *cmd;
uint32_t *clr_ptr;
uint32_t handle;
cmd_entry_t *cmd_pkt;
uint16_t cnt;
uint16_t req_cnt;
uint16_t tot_dsds;
struct device_reg_2xxx __iomem *reg;
struct qla_hw_data *ha;
struct req_que *req;
struct rsp_que *rsp;
/* Setup device pointers. */
vha = sp->vha;
ha = vha->hw;
reg = &ha->iobase->isp;
cmd = GET_CMD_SP(sp);
req = ha->req_q_map[0];
rsp = ha->rsp_q_map[0];
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
/* Send marker if required */
if (vha->marker_needed != 0) {
if (qla2x00_marker(vha, ha->base_qpair, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS) {
return (QLA_FUNCTION_FAILED);
}
vha->marker_needed = 0;
}
/* Acquire ring specific lock */
spin_lock_irqsave(&ha->hardware_lock, flags);
handle = qla2xxx_get_next_handle(req);
if (handle == 0)
goto queuing_error;
/* Map the sg table so we have an accurate count of sg entries needed */
if (scsi_sg_count(cmd)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
scsi_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
} else
nseg = 0;
tot_dsds = nseg;
/* Calculate the number of request entries needed. */
req_cnt = ha->isp_ops->calc_req_entries(tot_dsds);
if (req->cnt < (req_cnt + 2)) {
cnt = rd_reg_word_relaxed(ISP_REQ_Q_OUT(ha, reg));
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
/* If still no head room then bail out */
if (req->cnt < (req_cnt + 2))
goto queuing_error;
}
/* Build command packet */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
cmd->host_scribble = (unsigned char *)(unsigned long)handle;
req->cnt -= req_cnt;
cmd_pkt = (cmd_entry_t *)req->ring_ptr;
cmd_pkt->handle = handle;
/* Zero out remaining portion of packet. */
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
/* Set target ID and LUN number*/
SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id);
cmd_pkt->lun = cpu_to_le16(cmd->device->lun);
cmd_pkt->control_flags = cpu_to_le16(CF_SIMPLE_TAG);
/* Load SCSI command packet. */
memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len);
cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
/* Build IOCB segments */
ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds);
/* Set total data segment count. */
cmd_pkt->entry_count = (uint8_t)req_cnt;
wmb();
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else
req->ring_ptr++;
sp->flags |= SRB_DMA_VALID;
/* Set chip new ring index. */
wrt_reg_word(ISP_REQ_Q_IN(ha, reg), req->ring_index);
rd_reg_word_relaxed(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla2x00_process_response_queue(rsp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return (QLA_SUCCESS);
queuing_error:
if (tot_dsds)
scsi_dma_unmap(cmd);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return (QLA_FUNCTION_FAILED);
}
/**
* qla2x00_start_iocbs() - Execute the IOCB command
* @vha: HA context
* @req: request queue
*/
void
qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req)
{
struct qla_hw_data *ha = vha->hw;
device_reg_t *reg = ISP_QUE_REG(ha, req->id);
if (IS_P3P_TYPE(ha)) {
qla82xx_start_iocbs(vha);
} else {
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else
req->ring_ptr++;
/* Set chip new ring index. */
if (ha->mqenable || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
wrt_reg_dword(req->req_q_in, req->ring_index);
} else if (IS_QLA83XX(ha)) {
wrt_reg_dword(req->req_q_in, req->ring_index);
rd_reg_dword_relaxed(&ha->iobase->isp24.hccr);
} else if (IS_QLAFX00(ha)) {
wrt_reg_dword(&reg->ispfx00.req_q_in, req->ring_index);
rd_reg_dword_relaxed(&reg->ispfx00.req_q_in);
QLAFX00_SET_HST_INTR(ha, ha->rqstq_intr_code);
} else if (IS_FWI2_CAPABLE(ha)) {
wrt_reg_dword(&reg->isp24.req_q_in, req->ring_index);
rd_reg_dword_relaxed(&reg->isp24.req_q_in);
} else {
wrt_reg_word(ISP_REQ_Q_IN(ha, &reg->isp),
req->ring_index);
rd_reg_word_relaxed(ISP_REQ_Q_IN(ha, &reg->isp));
}
}
}
/**
* __qla2x00_marker() - Send a marker IOCB to the firmware.
* @vha: HA context
* @qpair: queue pair pointer
* @loop_id: loop ID
* @lun: LUN
* @type: marker modifier
*
* Can be called from both normal and interrupt context.
*
* Returns non-zero if a failure occurred, else zero.
*/
static int
__qla2x00_marker(struct scsi_qla_host *vha, struct qla_qpair *qpair,
uint16_t loop_id, uint64_t lun, uint8_t type)
{
mrk_entry_t *mrk;
struct mrk_entry_24xx *mrk24 = NULL;
struct req_que *req = qpair->req;
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
mrk = (mrk_entry_t *)__qla2x00_alloc_iocbs(qpair, NULL);
if (mrk == NULL) {
ql_log(ql_log_warn, base_vha, 0x3026,
"Failed to allocate Marker IOCB.\n");
return (QLA_FUNCTION_FAILED);
}
mrk->entry_type = MARKER_TYPE;
mrk->modifier = type;
if (type != MK_SYNC_ALL) {
if (IS_FWI2_CAPABLE(ha)) {
mrk24 = (struct mrk_entry_24xx *) mrk;
mrk24->nport_handle = cpu_to_le16(loop_id);
int_to_scsilun(lun, (struct scsi_lun *)&mrk24->lun);
host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
mrk24->vp_index = vha->vp_idx;
mrk24->handle = make_handle(req->id, mrk24->handle);
} else {
SET_TARGET_ID(ha, mrk->target, loop_id);
mrk->lun = cpu_to_le16((uint16_t)lun);
}
}
wmb();
qla2x00_start_iocbs(vha, req);
return (QLA_SUCCESS);
}
int
qla2x00_marker(struct scsi_qla_host *vha, struct qla_qpair *qpair,
uint16_t loop_id, uint64_t lun, uint8_t type)
{
int ret;
unsigned long flags = 0;
spin_lock_irqsave(qpair->qp_lock_ptr, flags);
ret = __qla2x00_marker(vha, qpair, loop_id, lun, type);
spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
return (ret);
}
/*
* qla2x00_issue_marker
*
* Issue marker
* Caller CAN have hardware lock held as specified by ha_locked parameter.
* Might release it, then reaquire.
*/
int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
{
if (ha_locked) {
if (__qla2x00_marker(vha, vha->hw->base_qpair, 0, 0,
MK_SYNC_ALL) != QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
} else {
if (qla2x00_marker(vha, vha->hw->base_qpair, 0, 0,
MK_SYNC_ALL) != QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
}
vha->marker_needed = 0;
return QLA_SUCCESS;
}
static inline int
qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
uint16_t tot_dsds)
{
struct dsd64 *cur_dsd = NULL, *next_dsd;
scsi_qla_host_t *vha;
struct qla_hw_data *ha;
struct scsi_cmnd *cmd;
struct scatterlist *cur_seg;
uint8_t avail_dsds;
uint8_t first_iocb = 1;
uint32_t dsd_list_len;
struct dsd_dma *dsd_ptr;
struct ct6_dsd *ctx;
struct qla_qpair *qpair = sp->qpair;
cmd = GET_CMD_SP(sp);
/* Update entry type to indicate Command Type 3 IOCB */
put_unaligned_le32(COMMAND_TYPE_6, &cmd_pkt->entry_type);
/* No data transfer */
if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
cmd_pkt->byte_count = cpu_to_le32(0);
return 0;
}
vha = sp->vha;
ha = vha->hw;
/* Set transfer direction */
if (cmd->sc_data_direction == DMA_TO_DEVICE) {
cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
qpair->counters.output_bytes += scsi_bufflen(cmd);
qpair->counters.output_requests++;
} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
qpair->counters.input_bytes += scsi_bufflen(cmd);
qpair->counters.input_requests++;
}
cur_seg = scsi_sglist(cmd);
ctx = sp->u.scmd.ct6_ctx;
while (tot_dsds) {
avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ?
QLA_DSDS_PER_IOCB : tot_dsds;
tot_dsds -= avail_dsds;
dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE;
dsd_ptr = list_first_entry(&ha->gbl_dsd_list,
struct dsd_dma, list);
next_dsd = dsd_ptr->dsd_addr;
list_del(&dsd_ptr->list);
ha->gbl_dsd_avail--;
list_add_tail(&dsd_ptr->list, &ctx->dsd_list);
ctx->dsd_use_cnt++;
ha->gbl_dsd_inuse++;
if (first_iocb) {
first_iocb = 0;
put_unaligned_le64(dsd_ptr->dsd_list_dma,
&cmd_pkt->fcp_dsd.address);
cmd_pkt->fcp_dsd.length = cpu_to_le32(dsd_list_len);
} else {
put_unaligned_le64(dsd_ptr->dsd_list_dma,
&cur_dsd->address);
cur_dsd->length = cpu_to_le32(dsd_list_len);
cur_dsd++;
}
cur_dsd = next_dsd;
while (avail_dsds) {
append_dsd64(&cur_dsd, cur_seg);
cur_seg = sg_next(cur_seg);
avail_dsds--;
}
}
/* Null termination */
cur_dsd->address = 0;
cur_dsd->length = 0;
cur_dsd++;
cmd_pkt->control_flags |= cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
return 0;
}
/*
* qla24xx_calc_dsd_lists() - Determine number of DSD list required
* for Command Type 6.
*
* @dsds: number of data segment descriptors needed
*
* Returns the number of dsd list needed to store @dsds.
*/
static inline uint16_t
qla24xx_calc_dsd_lists(uint16_t dsds)
{
uint16_t dsd_lists = 0;
dsd_lists = (dsds/QLA_DSDS_PER_IOCB);
if (dsds % QLA_DSDS_PER_IOCB)
dsd_lists++;
return dsd_lists;
}
/**
* qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
* IOCB types.
*
* @sp: SRB command to process
* @cmd_pkt: Command type 3 IOCB
* @tot_dsds: Total number of segments to transfer
* @req: pointer to request queue
*/
inline void
qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
uint16_t tot_dsds, struct req_que *req)
{
uint16_t avail_dsds;
struct dsd64 *cur_dsd;
scsi_qla_host_t *vha;
struct scsi_cmnd *cmd;
struct scatterlist *sg;
int i;
struct qla_qpair *qpair = sp->qpair;
cmd = GET_CMD_SP(sp);
/* Update entry type to indicate Command Type 3 IOCB */
put_unaligned_le32(COMMAND_TYPE_7, &cmd_pkt->entry_type);
/* No data transfer */
if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
cmd_pkt->byte_count = cpu_to_le32(0);
return;
}
vha = sp->vha;
/* Set transfer direction */
if (cmd->sc_data_direction == DMA_TO_DEVICE) {
cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_WRITE_DATA);
qpair->counters.output_bytes += scsi_bufflen(cmd);
qpair->counters.output_requests++;
} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_READ_DATA);
qpair->counters.input_bytes += scsi_bufflen(cmd);
qpair->counters.input_requests++;
}
/* One DSD is available in the Command Type 3 IOCB */
avail_dsds = 1;
cur_dsd = &cmd_pkt->dsd;
/* Load data segments */
scsi_for_each_sg(cmd, sg, tot_dsds, i) {
cont_a64_entry_t *cont_pkt;
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Five DSDs are available in the Continuation
* Type 1 IOCB.
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(vha, req);
cur_dsd = cont_pkt->dsd;
avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
}
struct fw_dif_context {
__le32 ref_tag;
__le16 app_tag;
uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/
uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/
};
/*
* qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
*
*/
static inline void
qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt,
unsigned int protcnt)
{
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
pkt->ref_tag = cpu_to_le32(scsi_prot_ref_tag(cmd));
if (cmd->prot_flags & SCSI_PROT_REF_CHECK &&
qla2x00_hba_err_chk_enabled(sp)) {
pkt->ref_tag_mask[0] = 0xff;
pkt->ref_tag_mask[1] = 0xff;
pkt->ref_tag_mask[2] = 0xff;
pkt->ref_tag_mask[3] = 0xff;
}
pkt->app_tag = cpu_to_le16(0);
pkt->app_tag_mask[0] = 0x0;
pkt->app_tag_mask[1] = 0x0;
}
int
qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx,
uint32_t *partial)
{
struct scatterlist *sg;
uint32_t cumulative_partial, sg_len;
dma_addr_t sg_dma_addr;
if (sgx->num_bytes == sgx->tot_bytes)
return 0;
sg = sgx->cur_sg;
cumulative_partial = sgx->tot_partial;
sg_dma_addr = sg_dma_address(sg);
sg_len = sg_dma_len(sg);
sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed;
if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) {
sgx->dma_len = (blk_sz - cumulative_partial);
sgx->tot_partial = 0;
sgx->num_bytes += blk_sz;
*partial = 0;
} else {
sgx->dma_len = sg_len - sgx->bytes_consumed;
sgx->tot_partial += sgx->dma_len;
*partial = 1;
}
sgx->bytes_consumed += sgx->dma_len;
if (sg_len == sgx->bytes_consumed) {
sg = sg_next(sg);
sgx->num_sg++;
sgx->cur_sg = sg;
sgx->bytes_consumed = 0;
}
return 1;
}
int
qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
struct dsd64 *dsd, uint16_t tot_dsds, struct qla_tc_param *tc)
{
void *next_dsd;
uint8_t avail_dsds = 0;
uint32_t dsd_list_len;
struct dsd_dma *dsd_ptr;
struct scatterlist *sg_prot;
struct dsd64 *cur_dsd = dsd;
uint16_t used_dsds = tot_dsds;
uint32_t prot_int; /* protection interval */
uint32_t partial;
struct qla2_sgx sgx;
dma_addr_t sle_dma;
uint32_t sle_dma_len, tot_prot_dma_len = 0;
struct scsi_cmnd *cmd;
memset(&sgx, 0, sizeof(struct qla2_sgx));
if (sp) {
cmd = GET_CMD_SP(sp);
prot_int = scsi_prot_interval(cmd);
sgx.tot_bytes = scsi_bufflen(cmd);
sgx.cur_sg = scsi_sglist(cmd);
sgx.sp = sp;
sg_prot = scsi_prot_sglist(cmd);
} else if (tc) {
prot_int = tc->blk_sz;
sgx.tot_bytes = tc->bufflen;
sgx.cur_sg = tc->sg;
sg_prot = tc->prot_sg;
} else {
BUG();
return 1;
}
while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) {
sle_dma = sgx.dma_addr;
sle_dma_len = sgx.dma_len;
alloc_and_fill:
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
QLA_DSDS_PER_IOCB : used_dsds;
dsd_list_len = (avail_dsds + 1) * 12;
used_dsds -= avail_dsds;
/* allocate tracking DS */
dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
if (!dsd_ptr)
return 1;
/* allocate new list */
dsd_ptr->dsd_addr = next_dsd =
dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
&dsd_ptr->dsd_list_dma);
if (!next_dsd) {
/*
* Need to cleanup only this dsd_ptr, rest
* will be done by sp_free_dma()
*/
kfree(dsd_ptr);
return 1;
}
if (sp) {
list_add_tail(&dsd_ptr->list,
&sp->u.scmd.crc_ctx->dsd_list);
sp->flags |= SRB_CRC_CTX_DSD_VALID;
} else {
list_add_tail(&dsd_ptr->list,
&(tc->ctx->dsd_list));
*tc->ctx_dsd_alloced = 1;
}
/* add new list to cmd iocb or last list */
put_unaligned_le64(dsd_ptr->dsd_list_dma,
&cur_dsd->address);
cur_dsd->length = cpu_to_le32(dsd_list_len);
cur_dsd = next_dsd;
}
put_unaligned_le64(sle_dma, &cur_dsd->address);
cur_dsd->length = cpu_to_le32(sle_dma_len);
cur_dsd++;
avail_dsds--;
if (partial == 0) {
/* Got a full protection interval */
sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len;
sle_dma_len = 8;
tot_prot_dma_len += sle_dma_len;
if (tot_prot_dma_len == sg_dma_len(sg_prot)) {
tot_prot_dma_len = 0;
sg_prot = sg_next(sg_prot);
}
partial = 1; /* So as to not re-enter this block */
goto alloc_and_fill;
}
}
/* Null termination */
cur_dsd->address = 0;
cur_dsd->length = 0;
cur_dsd++;
return 0;
}
int
qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp,
struct dsd64 *dsd, uint16_t tot_dsds, struct qla_tc_param *tc)
{
void *next_dsd;
uint8_t avail_dsds = 0;
uint32_t dsd_list_len;
struct dsd_dma *dsd_ptr;
struct scatterlist *sg, *sgl;
struct dsd64 *cur_dsd = dsd;
int i;
uint16_t used_dsds = tot_dsds;
struct scsi_cmnd *cmd;
if (sp) {
cmd = GET_CMD_SP(sp);
sgl = scsi_sglist(cmd);
} else if (tc) {
sgl = tc->sg;
} else {
BUG();
return 1;
}
for_each_sg(sgl, sg, tot_dsds, i) {
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
QLA_DSDS_PER_IOCB : used_dsds;
dsd_list_len = (avail_dsds + 1) * 12;
used_dsds -= avail_dsds;
/* allocate tracking DS */
dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
if (!dsd_ptr)
return 1;
/* allocate new list */
dsd_ptr->dsd_addr = next_dsd =
dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
&dsd_ptr->dsd_list_dma);
if (!next_dsd) {
/*
* Need to cleanup only this dsd_ptr, rest
* will be done by sp_free_dma()
*/
kfree(dsd_ptr);
return 1;
}
if (sp) {
list_add_tail(&dsd_ptr->list,
&sp->u.scmd.crc_ctx->dsd_list);
sp->flags |= SRB_CRC_CTX_DSD_VALID;
} else {
list_add_tail(&dsd_ptr->list,
&(tc->ctx->dsd_list));
*tc->ctx_dsd_alloced = 1;
}
/* add new list to cmd iocb or last list */
put_unaligned_le64(dsd_ptr->dsd_list_dma,
&cur_dsd->address);
cur_dsd->length = cpu_to_le32(dsd_list_len);
cur_dsd = next_dsd;
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
/* Null termination */
cur_dsd->address = 0;
cur_dsd->length = 0;
cur_dsd++;
return 0;
}
int
qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
struct dsd64 *cur_dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
{
struct dsd_dma *dsd_ptr = NULL, *dif_dsd, *nxt_dsd;
struct scatterlist *sg, *sgl;
struct crc_context *difctx = NULL;
struct scsi_qla_host *vha;
uint dsd_list_len;
uint avail_dsds = 0;
uint used_dsds = tot_dsds;
bool dif_local_dma_alloc = false;
bool direction_to_device = false;
int i;
if (sp) {
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
sgl = scsi_prot_sglist(cmd);
vha = sp->vha;
difctx = sp->u.scmd.crc_ctx;
direction_to_device = cmd->sc_data_direction == DMA_TO_DEVICE;
ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe021,
"%s: scsi_cmnd: %p, crc_ctx: %p, sp: %p\n",
__func__, cmd, difctx, sp);
} else if (tc) {
vha = tc->vha;
sgl = tc->prot_sg;
difctx = tc->ctx;
direction_to_device = tc->dma_data_direction == DMA_TO_DEVICE;
} else {
BUG();
return 1;
}
ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe021,
"%s: enter (write=%u)\n", __func__, direction_to_device);
/* if initiator doing write or target doing read */
if (direction_to_device) {
for_each_sg(sgl, sg, tot_dsds, i) {
u64 sle_phys = sg_phys(sg);
/* If SGE addr + len flips bits in upper 32-bits */
if (MSD(sle_phys + sg->length) ^ MSD(sle_phys)) {
ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe022,
"%s: page boundary crossing (phys=%llx len=%x)\n",
__func__, sle_phys, sg->length);
if (difctx) {
ha->dif_bundle_crossed_pages++;
dif_local_dma_alloc = true;
} else {
ql_dbg(ql_dbg_tgt + ql_dbg_verbose,
vha, 0xe022,
"%s: difctx pointer is NULL\n",
__func__);
}
break;
}
}
ha->dif_bundle_writes++;
} else {
ha->dif_bundle_reads++;
}
if (ql2xdifbundlinginternalbuffers)
dif_local_dma_alloc = direction_to_device;
if (dif_local_dma_alloc) {
u32 track_difbundl_buf = 0;
u32 ldma_sg_len = 0;
u8 ldma_needed = 1;
difctx->no_dif_bundl = 0;
difctx->dif_bundl_len = 0;
/* Track DSD buffers */
INIT_LIST_HEAD(&difctx->ldif_dsd_list);
/* Track local DMA buffers */
INIT_LIST_HEAD(&difctx->ldif_dma_hndl_list);
for_each_sg(sgl, sg, tot_dsds, i) {
u32 sglen = sg_dma_len(sg);
ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe023,
"%s: sg[%x] (phys=%llx sglen=%x) ldma_sg_len: %x dif_bundl_len: %x ldma_needed: %x\n",
__func__, i, (u64)sg_phys(sg), sglen, ldma_sg_len,
difctx->dif_bundl_len, ldma_needed);
while (sglen) {
u32 xfrlen = 0;
if (ldma_needed) {
/*
* Allocate list item to store
* the DMA buffers
*/
dsd_ptr = kzalloc(sizeof(*dsd_ptr),
GFP_ATOMIC);
if (!dsd_ptr) {
ql_dbg(ql_dbg_tgt, vha, 0xe024,
"%s: failed alloc dsd_ptr\n",
__func__);
return 1;
}
ha->dif_bundle_kallocs++;
/* allocate dma buffer */
dsd_ptr->dsd_addr = dma_pool_alloc
(ha->dif_bundl_pool, GFP_ATOMIC,
&dsd_ptr->dsd_list_dma);
if (!dsd_ptr->dsd_addr) {
ql_dbg(ql_dbg_tgt, vha, 0xe024,
"%s: failed alloc ->dsd_ptr\n",
__func__);
/*
* need to cleanup only this
* dsd_ptr rest will be done
* by sp_free_dma()
*/
kfree(dsd_ptr);
ha->dif_bundle_kallocs--;
return 1;
}
ha->dif_bundle_dma_allocs++;
ldma_needed = 0;
difctx->no_dif_bundl++;
list_add_tail(&dsd_ptr->list,
&difctx->ldif_dma_hndl_list);
}
/* xfrlen is min of dma pool size and sglen */
xfrlen = (sglen >
(DIF_BUNDLING_DMA_POOL_SIZE - ldma_sg_len)) ?
DIF_BUNDLING_DMA_POOL_SIZE - ldma_sg_len :
sglen;
/* replace with local allocated dma buffer */
sg_pcopy_to_buffer(sgl, sg_nents(sgl),
dsd_ptr->dsd_addr + ldma_sg_len, xfrlen,
difctx->dif_bundl_len);
difctx->dif_bundl_len += xfrlen;
sglen -= xfrlen;
ldma_sg_len += xfrlen;
if (ldma_sg_len == DIF_BUNDLING_DMA_POOL_SIZE ||
sg_is_last(sg)) {
ldma_needed = 1;
ldma_sg_len = 0;
}
}
}
track_difbundl_buf = used_dsds = difctx->no_dif_bundl;
ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe025,
"dif_bundl_len=%x, no_dif_bundl=%x track_difbundl_buf: %x\n",
difctx->dif_bundl_len, difctx->no_dif_bundl,
track_difbundl_buf);
if (sp)
sp->flags |= SRB_DIF_BUNDL_DMA_VALID;
else
tc->prot_flags = DIF_BUNDL_DMA_VALID;
list_for_each_entry_safe(dif_dsd, nxt_dsd,
&difctx->ldif_dma_hndl_list, list) {
u32 sglen = (difctx->dif_bundl_len >
DIF_BUNDLING_DMA_POOL_SIZE) ?
DIF_BUNDLING_DMA_POOL_SIZE : difctx->dif_bundl_len;
BUG_ON(track_difbundl_buf == 0);
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha,
0xe024,
"%s: adding continuation iocb's\n",
__func__);
avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
QLA_DSDS_PER_IOCB : used_dsds;
dsd_list_len = (avail_dsds + 1) * 12;
used_dsds -= avail_dsds;
/* allocate tracking DS */
dsd_ptr = kzalloc(sizeof(*dsd_ptr), GFP_ATOMIC);
if (!dsd_ptr) {
ql_dbg(ql_dbg_tgt, vha, 0xe026,
"%s: failed alloc dsd_ptr\n",
__func__);
return 1;
}
ha->dif_bundle_kallocs++;
difctx->no_ldif_dsd++;
/* allocate new list */
dsd_ptr->dsd_addr =
dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
&dsd_ptr->dsd_list_dma);
if (!dsd_ptr->dsd_addr) {
ql_dbg(ql_dbg_tgt, vha, 0xe026,
"%s: failed alloc ->dsd_addr\n",
__func__);
/*
* need to cleanup only this dsd_ptr
* rest will be done by sp_free_dma()
*/
kfree(dsd_ptr);
ha->dif_bundle_kallocs--;
return 1;
}
ha->dif_bundle_dma_allocs++;
if (sp) {
list_add_tail(&dsd_ptr->list,
&difctx->ldif_dsd_list);
sp->flags |= SRB_CRC_CTX_DSD_VALID;
} else {
list_add_tail(&dsd_ptr->list,
&difctx->ldif_dsd_list);
tc->ctx_dsd_alloced = 1;
}
/* add new list to cmd iocb or last list */
put_unaligned_le64(dsd_ptr->dsd_list_dma,
&cur_dsd->address);
cur_dsd->length = cpu_to_le32(dsd_list_len);
cur_dsd = dsd_ptr->dsd_addr;
}
put_unaligned_le64(dif_dsd->dsd_list_dma,
&cur_dsd->address);
cur_dsd->length = cpu_to_le32(sglen);
cur_dsd++;
avail_dsds--;
difctx->dif_bundl_len -= sglen;
track_difbundl_buf--;
}
ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe026,
"%s: no_ldif_dsd:%x, no_dif_bundl:%x\n", __func__,
difctx->no_ldif_dsd, difctx->no_dif_bundl);
} else {
for_each_sg(sgl, sg, tot_dsds, i) {
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
QLA_DSDS_PER_IOCB : used_dsds;
dsd_list_len = (avail_dsds + 1) * 12;
used_dsds -= avail_dsds;
/* allocate tracking DS */
dsd_ptr = kzalloc(sizeof(*dsd_ptr), GFP_ATOMIC);
if (!dsd_ptr) {
ql_dbg(ql_dbg_tgt + ql_dbg_verbose,
vha, 0xe027,
"%s: failed alloc dsd_dma...\n",
__func__);
return 1;
}
/* allocate new list */
dsd_ptr->dsd_addr =
dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
&dsd_ptr->dsd_list_dma);
if (!dsd_ptr->dsd_addr) {
/* need to cleanup only this dsd_ptr */
/* rest will be done by sp_free_dma() */
kfree(dsd_ptr);
return 1;
}
if (sp) {
list_add_tail(&dsd_ptr->list,
&difctx->dsd_list);
sp->flags |= SRB_CRC_CTX_DSD_VALID;
} else {
list_add_tail(&dsd_ptr->list,
&difctx->dsd_list);
tc->ctx_dsd_alloced = 1;
}
/* add new list to cmd iocb or last list */
put_unaligned_le64(dsd_ptr->dsd_list_dma,
&cur_dsd->address);
cur_dsd->length = cpu_to_le32(dsd_list_len);
cur_dsd = dsd_ptr->dsd_addr;
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
}
/* Null termination */
cur_dsd->address = 0;
cur_dsd->length = 0;
cur_dsd++;
return 0;
}
/**
* qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command
* Type 6 IOCB types.
*
* @sp: SRB command to process
* @cmd_pkt: Command type 3 IOCB
* @tot_dsds: Total number of segments to transfer
* @tot_prot_dsds: Total number of segments with protection information
* @fw_prot_opts: Protection options to be passed to firmware
*/
static inline int
qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts)
{
struct dsd64 *cur_dsd;
__be32 *fcp_dl;
scsi_qla_host_t *vha;
struct scsi_cmnd *cmd;
uint32_t total_bytes = 0;
uint32_t data_bytes;
uint32_t dif_bytes;
uint8_t bundling = 1;
uint16_t blk_size;
struct crc_context *crc_ctx_pkt = NULL;
struct qla_hw_data *ha;
uint8_t additional_fcpcdb_len;
uint16_t fcp_cmnd_len;
struct fcp_cmnd *fcp_cmnd;
dma_addr_t crc_ctx_dma;
cmd = GET_CMD_SP(sp);
/* Update entry type to indicate Command Type CRC_2 IOCB */
put_unaligned_le32(COMMAND_TYPE_CRC_2, &cmd_pkt->entry_type);
vha = sp->vha;
ha = vha->hw;
/* No data transfer */
data_bytes = scsi_bufflen(cmd);
if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
cmd_pkt->byte_count = cpu_to_le32(0);
return QLA_SUCCESS;
}
cmd_pkt->vp_index = sp->vha->vp_idx;
/* Set transfer direction */
if (cmd->sc_data_direction == DMA_TO_DEVICE) {
cmd_pkt->control_flags =
cpu_to_le16(CF_WRITE_DATA);
} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
cmd_pkt->control_flags =
cpu_to_le16(CF_READ_DATA);
}
if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
(scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) ||
(scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) ||
(scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT))
bundling = 0;
/* Allocate CRC context from global pool */
crc_ctx_pkt = sp->u.scmd.crc_ctx =
dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
if (!crc_ctx_pkt)
goto crc_queuing_error;
crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
sp->flags |= SRB_CRC_CTX_DMA_VALID;
/* Set handle */
crc_ctx_pkt->handle = cmd_pkt->handle;
INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *)
&crc_ctx_pkt->ref_tag, tot_prot_dsds);
put_unaligned_le64(crc_ctx_dma, &cmd_pkt->crc_context_address);
cmd_pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW);
/* Determine SCSI command length -- align to 4 byte boundary */
if (cmd->cmd_len > 16) {
additional_fcpcdb_len = cmd->cmd_len - 16;
if ((cmd->cmd_len % 4) != 0) {
/* SCSI cmd > 16 bytes must be multiple of 4 */
goto crc_queuing_error;
}
fcp_cmnd_len = 12 + cmd->cmd_len + 4;
} else {
additional_fcpcdb_len = 0;
fcp_cmnd_len = 12 + 16 + 4;
}
fcp_cmnd = &crc_ctx_pkt->fcp_cmnd;
fcp_cmnd->additional_cdb_len = additional_fcpcdb_len;
if (cmd->sc_data_direction == DMA_TO_DEVICE)
fcp_cmnd->additional_cdb_len |= 1;
else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
fcp_cmnd->additional_cdb_len |= 2;
int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun);
memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len);
put_unaligned_le64(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF,
&cmd_pkt->fcp_cmnd_dseg_address);
fcp_cmnd->task_management = 0;
fcp_cmnd->task_attribute = TSK_SIMPLE;
cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
/* Compute dif len and adjust data len to incude protection */
dif_bytes = 0;
blk_size = cmd->device->sector_size;
dif_bytes = (data_bytes / blk_size) * 8;
switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
case SCSI_PROT_READ_INSERT:
case SCSI_PROT_WRITE_STRIP:
total_bytes = data_bytes;
data_bytes += dif_bytes;
break;
case SCSI_PROT_READ_STRIP:
case SCSI_PROT_WRITE_INSERT:
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
total_bytes = data_bytes + dif_bytes;
break;
default:
BUG();
}
if (!qla2x00_hba_err_chk_enabled(sp))
fw_prot_opts |= 0x10; /* Disable Guard tag checking */
/* HBA error checking enabled */
else if (IS_PI_UNINIT_CAPABLE(ha)) {
if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1)
|| (scsi_get_prot_type(GET_CMD_SP(sp)) ==
SCSI_PROT_DIF_TYPE2))
fw_prot_opts |= BIT_10;
else if (scsi_get_prot_type(GET_CMD_SP(sp)) ==
SCSI_PROT_DIF_TYPE3)
fw_prot_opts |= BIT_11;
}
if (!bundling) {
cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0];
} else {
/*
* Configure Bundling if we need to fetch interlaving
* protection PCI accesses
*/
fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds -
tot_prot_dsds);
cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0];
}
/* Finish the common fields of CRC pkt */
crc_ctx_pkt->blk_size = cpu_to_le16(blk_size);
crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
crc_ctx_pkt->guard_seed = cpu_to_le16(0);
/* Fibre channel byte count */
cmd_pkt->byte_count = cpu_to_le32(total_bytes);
fcp_dl = (__be32 *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 +
additional_fcpcdb_len);
*fcp_dl = htonl(total_bytes);
if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
cmd_pkt->byte_count = cpu_to_le32(0);
return QLA_SUCCESS;
}
/* Walks data segments */
cmd_pkt->control_flags |= cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
if (!bundling && tot_prot_dsds) {
if (qla24xx_walk_and_build_sglist_no_difb(ha, sp,
cur_dsd, tot_dsds, NULL))
goto crc_queuing_error;
} else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd,
(tot_dsds - tot_prot_dsds), NULL))
goto crc_queuing_error;
if (bundling && tot_prot_dsds) {
/* Walks dif segments */
cmd_pkt->control_flags |= cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE);
cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd,
tot_prot_dsds, NULL))
goto crc_queuing_error;
}
return QLA_SUCCESS;
crc_queuing_error:
/* Cleanup will be performed by the caller */
return QLA_FUNCTION_FAILED;
}
/**
* qla24xx_start_scsi() - Send a SCSI command to the ISP
* @sp: command to send to the ISP
*
* Returns non-zero if a failure occurred, else zero.
*/
int
qla24xx_start_scsi(srb_t *sp)
{
int nseg;
unsigned long flags;
uint32_t *clr_ptr;
uint32_t handle;
struct cmd_type_7 *cmd_pkt;
uint16_t cnt;
uint16_t req_cnt;
uint16_t tot_dsds;
struct req_que *req = NULL;
struct rsp_que *rsp;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
if (sp->fcport->edif.enable && (sp->fcport->flags & FCF_FCSP_DEVICE))
return qla28xx_start_scsi_edif(sp);
/* Setup device pointers. */
req = vha->req;
rsp = req->rsp;
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
/* Send marker if required */
if (vha->marker_needed != 0) {
if (qla2x00_marker(vha, ha->base_qpair, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
vha->marker_needed = 0;
}
/* Acquire ring specific lock */
spin_lock_irqsave(&ha->hardware_lock, flags);
handle = qla2xxx_get_next_handle(req);
if (handle == 0)
goto queuing_error;
/* Map the sg table so we have an accurate count of sg entries needed */
if (scsi_sg_count(cmd)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
scsi_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
} else
nseg = 0;
tot_dsds = nseg;
req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
sp->iores.res_type = RESOURCE_INI;
sp->iores.iocb_cnt = req_cnt;
if (qla_get_iocbs(sp->qpair, &sp->iores))
goto queuing_error;
if (req->cnt < (req_cnt + 2)) {
if (IS_SHADOW_REG_CAPABLE(ha)) {
cnt = *req->out_ptr;
} else {
cnt = rd_reg_dword_relaxed(req->req_q_out);
if (qla2x00_check_reg16_for_disconnect(vha, cnt))
goto queuing_error;
}
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
if (req->cnt < (req_cnt + 2))
goto queuing_error;
}
/* Build command packet. */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
cmd->host_scribble = (unsigned char *)(unsigned long)handle;
req->cnt -= req_cnt;
cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
/* Zero out remaining portion of packet. */
/* tagged queuing modifier -- default is TSK_SIMPLE (0). */
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
/* Set NPORT-ID and LUN number*/
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
cmd_pkt->vp_index = sp->vha->vp_idx;
int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
cmd_pkt->task = TSK_SIMPLE;
/* Load SCSI command packet. */
memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
/* Build IOCB segments */
qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req);
/* Set total data segment count. */
cmd_pkt->entry_count = (uint8_t)req_cnt;
wmb();
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else
req->ring_ptr++;
sp->qpair->cmd_cnt++;
sp->flags |= SRB_DMA_VALID;
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
queuing_error:
if (tot_dsds)
scsi_dma_unmap(cmd);
qla_put_iocbs(sp->qpair, &sp->iores);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_FUNCTION_FAILED;
}
/**
* qla24xx_dif_start_scsi() - Send a SCSI command to the ISP
* @sp: command to send to the ISP
*
* Returns non-zero if a failure occurred, else zero.
*/
int
qla24xx_dif_start_scsi(srb_t *sp)
{
int nseg;
unsigned long flags;
uint32_t *clr_ptr;
uint32_t handle;
uint16_t cnt;
uint16_t req_cnt = 0;
uint16_t tot_dsds;
uint16_t tot_prot_dsds;
uint16_t fw_prot_opts = 0;
struct req_que *req = NULL;
struct rsp_que *rsp = NULL;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
struct cmd_type_crc_2 *cmd_pkt;
uint32_t status = 0;
#define QDSS_GOT_Q_SPACE BIT_0
/* Only process protection or >16 cdb in this routine */
if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
if (cmd->cmd_len <= 16)
return qla24xx_start_scsi(sp);
}
/* Setup device pointers. */
req = vha->req;
rsp = req->rsp;
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
/* Send marker if required */
if (vha->marker_needed != 0) {
if (qla2x00_marker(vha, ha->base_qpair, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
vha->marker_needed = 0;
}
/* Acquire ring specific lock */
spin_lock_irqsave(&ha->hardware_lock, flags);
handle = qla2xxx_get_next_handle(req);
if (handle == 0)
goto queuing_error;
/* Compute number of required data segments */
/* Map the sg table so we have an accurate count of sg entries needed */
if (scsi_sg_count(cmd)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
scsi_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
else
sp->flags |= SRB_DMA_VALID;
if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
(scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
struct qla2_sgx sgx;
uint32_t partial;
memset(&sgx, 0, sizeof(struct qla2_sgx));
sgx.tot_bytes = scsi_bufflen(cmd);
sgx.cur_sg = scsi_sglist(cmd);
sgx.sp = sp;
nseg = 0;
while (qla24xx_get_one_block_sg(
cmd->device->sector_size, &sgx, &partial))
nseg++;
}
} else
nseg = 0;
/* number of required data segments */
tot_dsds = nseg;
/* Compute number of required protection segments */
if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
scsi_prot_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
else
sp->flags |= SRB_CRC_PROT_DMA_VALID;
if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
(scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
}
} else {
nseg = 0;
}
req_cnt = 1;
/* Total Data and protection sg segment(s) */
tot_prot_dsds = nseg;
tot_dsds += nseg;
sp->iores.res_type = RESOURCE_INI;
sp->iores.iocb_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
if (qla_get_iocbs(sp->qpair, &sp->iores))
goto queuing_error;
if (req->cnt < (req_cnt + 2)) {
if (IS_SHADOW_REG_CAPABLE(ha)) {
cnt = *req->out_ptr;
} else {
cnt = rd_reg_dword_relaxed(req->req_q_out);
if (qla2x00_check_reg16_for_disconnect(vha, cnt))
goto queuing_error;
}
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
if (req->cnt < (req_cnt + 2))
goto queuing_error;
}
status |= QDSS_GOT_Q_SPACE;
/* Build header part of command packet (excluding the OPCODE). */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
cmd->host_scribble = (unsigned char *)(unsigned long)handle;
req->cnt -= req_cnt;
/* Fill-in common area */
cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
/* Set NPORT-ID and LUN number*/
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
/* Total Data and protection segment(s) */
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
/* Build IOCB segments and adjust for data protection segments */
if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
QLA_SUCCESS)
goto queuing_error;
cmd_pkt->entry_count = (uint8_t)req_cnt;
/* Specify response queue number where completion should happen */
cmd_pkt->entry_status = (uint8_t) rsp->id;
cmd_pkt->timeout = cpu_to_le16(0);
wmb();
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else
req->ring_ptr++;
sp->qpair->cmd_cnt++;
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
queuing_error:
if (status & QDSS_GOT_Q_SPACE) {
req->outstanding_cmds[handle] = NULL;
req->cnt += req_cnt;
}
/* Cleanup will be performed by the caller (queuecommand) */
qla_put_iocbs(sp->qpair, &sp->iores);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_FUNCTION_FAILED;
}
/**
* qla2xxx_start_scsi_mq() - Send a SCSI command to the ISP
* @sp: command to send to the ISP
*
* Returns non-zero if a failure occurred, else zero.
*/
static int
qla2xxx_start_scsi_mq(srb_t *sp)
{
int nseg;
unsigned long flags;
uint32_t *clr_ptr;
uint32_t handle;
struct cmd_type_7 *cmd_pkt;
uint16_t cnt;
uint16_t req_cnt;
uint16_t tot_dsds;
struct req_que *req = NULL;
struct rsp_que *rsp;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->fcport->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_qpair *qpair = sp->qpair;
if (sp->fcport->edif.enable && (sp->fcport->flags & FCF_FCSP_DEVICE))
return qla28xx_start_scsi_edif(sp);
/* Acquire qpair specific lock */
spin_lock_irqsave(&qpair->qp_lock, flags);
/* Setup qpair pointers */
req = qpair->req;
rsp = qpair->rsp;
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
/* Send marker if required */
if (vha->marker_needed != 0) {
if (__qla2x00_marker(vha, qpair, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS) {
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_FUNCTION_FAILED;
}
vha->marker_needed = 0;
}
handle = qla2xxx_get_next_handle(req);
if (handle == 0)
goto queuing_error;
/* Map the sg table so we have an accurate count of sg entries needed */
if (scsi_sg_count(cmd)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
scsi_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
} else
nseg = 0;
tot_dsds = nseg;
req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
sp->iores.res_type = RESOURCE_INI;
sp->iores.iocb_cnt = req_cnt;
if (qla_get_iocbs(sp->qpair, &sp->iores))
goto queuing_error;
if (req->cnt < (req_cnt + 2)) {
if (IS_SHADOW_REG_CAPABLE(ha)) {
cnt = *req->out_ptr;
} else {
cnt = rd_reg_dword_relaxed(req->req_q_out);
if (qla2x00_check_reg16_for_disconnect(vha, cnt))
goto queuing_error;
}
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
if (req->cnt < (req_cnt + 2))
goto queuing_error;
}
/* Build command packet. */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
cmd->host_scribble = (unsigned char *)(unsigned long)handle;
req->cnt -= req_cnt;
cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
/* Zero out remaining portion of packet. */
/* tagged queuing modifier -- default is TSK_SIMPLE (0). */
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
/* Set NPORT-ID and LUN number*/
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
cmd_pkt->task = TSK_SIMPLE;
/* Load SCSI command packet. */
memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
/* Build IOCB segments */
qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req);
/* Set total data segment count. */
cmd_pkt->entry_count = (uint8_t)req_cnt;
wmb();
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else
req->ring_ptr++;
sp->qpair->cmd_cnt++;
sp->flags |= SRB_DMA_VALID;
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_SUCCESS;
queuing_error:
if (tot_dsds)
scsi_dma_unmap(cmd);
qla_put_iocbs(sp->qpair, &sp->iores);
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_FUNCTION_FAILED;
}
/**
* qla2xxx_dif_start_scsi_mq() - Send a SCSI command to the ISP
* @sp: command to send to the ISP
*
* Returns non-zero if a failure occurred, else zero.
*/
int
qla2xxx_dif_start_scsi_mq(srb_t *sp)
{
int nseg;
unsigned long flags;
uint32_t *clr_ptr;
uint32_t handle;
uint16_t cnt;
uint16_t req_cnt = 0;
uint16_t tot_dsds;
uint16_t tot_prot_dsds;
uint16_t fw_prot_opts = 0;
struct req_que *req = NULL;
struct rsp_que *rsp = NULL;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->fcport->vha;
struct qla_hw_data *ha = vha->hw;
struct cmd_type_crc_2 *cmd_pkt;
uint32_t status = 0;
struct qla_qpair *qpair = sp->qpair;
#define QDSS_GOT_Q_SPACE BIT_0
/* Check for host side state */
if (!qpair->online) {
cmd->result = DID_NO_CONNECT << 16;
return QLA_INTERFACE_ERROR;
}
if (!qpair->difdix_supported &&
scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
cmd->result = DID_NO_CONNECT << 16;
return QLA_INTERFACE_ERROR;
}
/* Only process protection or >16 cdb in this routine */
if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
if (cmd->cmd_len <= 16)
return qla2xxx_start_scsi_mq(sp);
}
spin_lock_irqsave(&qpair->qp_lock, flags);
/* Setup qpair pointers */
rsp = qpair->rsp;
req = qpair->req;
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
/* Send marker if required */
if (vha->marker_needed != 0) {
if (__qla2x00_marker(vha, qpair, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS) {
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_FUNCTION_FAILED;
}
vha->marker_needed = 0;
}
handle = qla2xxx_get_next_handle(req);
if (handle == 0)
goto queuing_error;
/* Compute number of required data segments */
/* Map the sg table so we have an accurate count of sg entries needed */
if (scsi_sg_count(cmd)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
scsi_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
else
sp->flags |= SRB_DMA_VALID;
if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
(scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
struct qla2_sgx sgx;
uint32_t partial;
memset(&sgx, 0, sizeof(struct qla2_sgx));
sgx.tot_bytes = scsi_bufflen(cmd);
sgx.cur_sg = scsi_sglist(cmd);
sgx.sp = sp;
nseg = 0;
while (qla24xx_get_one_block_sg(
cmd->device->sector_size, &sgx, &partial))
nseg++;
}
} else
nseg = 0;
/* number of required data segments */
tot_dsds = nseg;
/* Compute number of required protection segments */
if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
scsi_prot_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
else
sp->flags |= SRB_CRC_PROT_DMA_VALID;
if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
(scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
}
} else {
nseg = 0;
}
req_cnt = 1;
/* Total Data and protection sg segment(s) */
tot_prot_dsds = nseg;
tot_dsds += nseg;
sp->iores.res_type = RESOURCE_INI;
sp->iores.iocb_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
if (qla_get_iocbs(sp->qpair, &sp->iores))
goto queuing_error;
if (req->cnt < (req_cnt + 2)) {
if (IS_SHADOW_REG_CAPABLE(ha)) {
cnt = *req->out_ptr;
} else {
cnt = rd_reg_dword_relaxed(req->req_q_out);
if (qla2x00_check_reg16_for_disconnect(vha, cnt))
goto queuing_error;
}
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
if (req->cnt < (req_cnt + 2))
goto queuing_error;
}
status |= QDSS_GOT_Q_SPACE;
/* Build header part of command packet (excluding the OPCODE). */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
cmd->host_scribble = (unsigned char *)(unsigned long)handle;
req->cnt -= req_cnt;
/* Fill-in common area */
cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
/* Set NPORT-ID and LUN number*/
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
/* Total Data and protection segment(s) */
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
/* Build IOCB segments and adjust for data protection segments */
if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
QLA_SUCCESS)
goto queuing_error;
cmd_pkt->entry_count = (uint8_t)req_cnt;
cmd_pkt->timeout = cpu_to_le16(0);
wmb();
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else
req->ring_ptr++;
sp->qpair->cmd_cnt++;
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_SUCCESS;
queuing_error:
if (status & QDSS_GOT_Q_SPACE) {
req->outstanding_cmds[handle] = NULL;
req->cnt += req_cnt;
}
/* Cleanup will be performed by the caller (queuecommand) */
qla_put_iocbs(sp->qpair, &sp->iores);
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_FUNCTION_FAILED;
}
/* Generic Control-SRB manipulation functions. */
/* hardware_lock assumed to be held. */
void *
__qla2x00_alloc_iocbs(struct qla_qpair *qpair, srb_t *sp)
{
scsi_qla_host_t *vha = qpair->vha;
struct qla_hw_data *ha = vha->hw;
struct req_que *req = qpair->req;
device_reg_t *reg = ISP_QUE_REG(ha, req->id);
uint32_t handle;
request_t *pkt;
uint16_t cnt, req_cnt;
pkt = NULL;
req_cnt = 1;
handle = 0;
if (sp && (sp->type != SRB_SCSI_CMD)) {
/* Adjust entry-counts as needed. */
req_cnt = sp->iocbs;
}
/* Check for room on request queue. */
if (req->cnt < req_cnt + 2) {
if (qpair->use_shadow_reg)
cnt = *req->out_ptr;
else if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
IS_QLA28XX(ha))
cnt = rd_reg_dword(&reg->isp25mq.req_q_out);
else if (IS_P3P_TYPE(ha))
cnt = rd_reg_dword(reg->isp82.req_q_out);
else if (IS_FWI2_CAPABLE(ha))
cnt = rd_reg_dword(&reg->isp24.req_q_out);
else if (IS_QLAFX00(ha))
cnt = rd_reg_dword(&reg->ispfx00.req_q_out);
else
cnt = qla2x00_debounce_register(
ISP_REQ_Q_OUT(ha, &reg->isp));
if (!qpair->use_shadow_reg && cnt == ISP_REG16_DISCONNECT) {
qla_schedule_eeh_work(vha);
return NULL;
}
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
}
if (req->cnt < req_cnt + 2)
goto queuing_error;
if (sp) {
handle = qla2xxx_get_next_handle(req);
if (handle == 0) {
ql_log(ql_log_warn, vha, 0x700b,
"No room on outstanding cmd array.\n");
goto queuing_error;
}
/* Prep command array. */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
}
/* Prep packet */
req->cnt -= req_cnt;
pkt = req->ring_ptr;
memset(pkt, 0, REQUEST_ENTRY_SIZE);
if (IS_QLAFX00(ha)) {
wrt_reg_byte((u8 __force __iomem *)&pkt->entry_count, req_cnt);
wrt_reg_dword((__le32 __force __iomem *)&pkt->handle, handle);
} else {
pkt->entry_count = req_cnt;
pkt->handle = handle;
}
return pkt;
queuing_error:
qpair->tgt_counters.num_alloc_iocb_failed++;
return pkt;
}
void *
qla2x00_alloc_iocbs_ready(struct qla_qpair *qpair, srb_t *sp)
{
scsi_qla_host_t *vha = qpair->vha;
if (qla2x00_reset_active(vha))
return NULL;
return __qla2x00_alloc_iocbs(qpair, sp);
}
void *
qla2x00_alloc_iocbs(struct scsi_qla_host *vha, srb_t *sp)
{
return __qla2x00_alloc_iocbs(vha->hw->base_qpair, sp);
}
static void
qla24xx_prli_iocb(srb_t *sp, struct logio_entry_24xx *logio)
{
struct srb_iocb *lio = &sp->u.iocb_cmd;
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
logio->control_flags = cpu_to_le16(LCF_COMMAND_PRLI);
if (lio->u.logio.flags & SRB_LOGIN_NVME_PRLI) {
logio->control_flags |= cpu_to_le16(LCF_NVME_PRLI);
if (sp->vha->flags.nvme_first_burst)
logio->io_parameter[0] =
cpu_to_le32(NVME_PRLI_SP_FIRST_BURST);
if (sp->vha->flags.nvme2_enabled) {
/* Set service parameter BIT_7 for NVME CONF support */
logio->io_parameter[0] |=
cpu_to_le32(NVME_PRLI_SP_CONF);
/* Set service parameter BIT_8 for SLER support */
logio->io_parameter[0] |=
cpu_to_le32(NVME_PRLI_SP_SLER);
/* Set service parameter BIT_9 for PI control support */
logio->io_parameter[0] |=
cpu_to_le32(NVME_PRLI_SP_PI_CTRL);
}
}
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->port_id[0] = sp->fcport->d_id.b.al_pa;
logio->port_id[1] = sp->fcport->d_id.b.area;
logio->port_id[2] = sp->fcport->d_id.b.domain;
logio->vp_index = sp->vha->vp_idx;
}
static void
qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
{
struct srb_iocb *lio = &sp->u.iocb_cmd;
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
if (lio->u.logio.flags & SRB_LOGIN_PRLI_ONLY) {
logio->control_flags = cpu_to_le16(LCF_COMMAND_PRLI);
} else {
logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
if (lio->u.logio.flags & SRB_LOGIN_FCSP) {
logio->control_flags |=
cpu_to_le16(LCF_COMMON_FEAT | LCF_SKIP_PRLI);
logio->io_parameter[0] =
cpu_to_le32(LIO_COMM_FEAT_FCSP | LIO_COMM_FEAT_CIO);
}
}
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->port_id[0] = sp->fcport->d_id.b.al_pa;
logio->port_id[1] = sp->fcport->d_id.b.area;
logio->port_id[2] = sp->fcport->d_id.b.domain;
logio->vp_index = sp->vha->vp_idx;
}
static void
qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
{
struct qla_hw_data *ha = sp->vha->hw;
struct srb_iocb *lio = &sp->u.iocb_cmd;
uint16_t opts;
mbx->entry_type = MBX_IOCB_TYPE;
SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0;
opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0;
if (HAS_EXTENDED_IDS(ha)) {
mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
mbx->mb10 = cpu_to_le16(opts);
} else {
mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
}
mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
sp->fcport->d_id.b.al_pa);
mbx->mb9 = cpu_to_le16(sp->vha->vp_idx);
}
static void
qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
{
u16 control_flags = LCF_COMMAND_LOGO;
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
if (sp->fcport->explicit_logout) {
control_flags |= LCF_EXPL_LOGO|LCF_FREE_NPORT;
} else {
control_flags |= LCF_IMPL_LOGO;
if (!sp->fcport->keep_nport_handle)
control_flags |= LCF_FREE_NPORT;
}
logio->control_flags = cpu_to_le16(control_flags);
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->port_id[0] = sp->fcport->d_id.b.al_pa;
logio->port_id[1] = sp->fcport->d_id.b.area;
logio->port_id[2] = sp->fcport->d_id.b.domain;
logio->vp_index = sp->vha->vp_idx;
}
static void
qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
{
struct qla_hw_data *ha = sp->vha->hw;
mbx->entry_type = MBX_IOCB_TYPE;
SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
cpu_to_le16(sp->fcport->loop_id) :
cpu_to_le16(sp->fcport->loop_id << 8);
mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
sp->fcport->d_id.b.al_pa);
mbx->mb9 = cpu_to_le16(sp->vha->vp_idx);
/* Implicit: mbx->mbx10 = 0. */
}
static void
qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio)
{
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC);
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->vp_index = sp->vha->vp_idx;
}
static void
qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx)
{
struct qla_hw_data *ha = sp->vha->hw;
mbx->entry_type = MBX_IOCB_TYPE;
SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE);
if (HAS_EXTENDED_IDS(ha)) {
mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
mbx->mb10 = cpu_to_le16(BIT_0);
} else {
mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0);
}
mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma));
mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma));
mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma)));
mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma)));
mbx->mb9 = cpu_to_le16(sp->vha->vp_idx);
}
static void
qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk)
{
uint32_t flags;
uint64_t lun;
struct fc_port *fcport = sp->fcport;
scsi_qla_host_t *vha = fcport->vha;
struct qla_hw_data *ha = vha->hw;
struct srb_iocb *iocb = &sp->u.iocb_cmd;
struct req_que *req = vha->req;
flags = iocb->u.tmf.flags;
lun = iocb->u.tmf.lun;
tsk->entry_type = TSK_MGMT_IOCB_TYPE;
tsk->entry_count = 1;
tsk->handle = make_handle(req->id, tsk->handle);
tsk->nport_handle = cpu_to_le16(fcport->loop_id);
tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
tsk->control_flags = cpu_to_le32(flags);
tsk->port_id[0] = fcport->d_id.b.al_pa;
tsk->port_id[1] = fcport->d_id.b.area;
tsk->port_id[2] = fcport->d_id.b.domain;
tsk->vp_index = fcport->vha->vp_idx;
if (flags == TCF_LUN_RESET) {
int_to_scsilun(lun, &tsk->lun);
host_to_fcp_swap((uint8_t *)&tsk->lun,
sizeof(tsk->lun));
}
}
void qla2x00_init_timer(srb_t *sp, unsigned long tmo)
{
timer_setup(&sp->u.iocb_cmd.timer, qla2x00_sp_timeout, 0);
sp->u.iocb_cmd.timer.expires = jiffies + tmo * HZ;
sp->free = qla2x00_sp_free;
if (IS_QLAFX00(sp->vha->hw) && sp->type == SRB_FXIOCB_DCMD)
init_completion(&sp->u.iocb_cmd.u.fxiocb.fxiocb_comp);
sp->start_timer = 1;
}
static void qla2x00_els_dcmd_sp_free(srb_t *sp)
{
struct srb_iocb *elsio = &sp->u.iocb_cmd;
kfree(sp->fcport);
if (elsio->u.els_logo.els_logo_pyld)
dma_free_coherent(&sp->vha->hw->pdev->dev, DMA_POOL_SIZE,
elsio->u.els_logo.els_logo_pyld,
elsio->u.els_logo.els_logo_pyld_dma);
del_timer(&elsio->timer);
qla2x00_rel_sp(sp);
}
static void
qla2x00_els_dcmd_iocb_timeout(void *data)
{
srb_t *sp = data;
fc_port_t *fcport = sp->fcport;
struct scsi_qla_host *vha = sp->vha;
struct srb_iocb *lio = &sp->u.iocb_cmd;
unsigned long flags = 0;
int res, h;
ql_dbg(ql_dbg_io, vha, 0x3069,
"%s Timeout, hdl=%x, portid=%02x%02x%02x\n",
sp->name, sp->handle, fcport->d_id.b.domain, fcport->d_id.b.area,
fcport->d_id.b.al_pa);
/* Abort the exchange */
res = qla24xx_async_abort_cmd(sp, false);
if (res) {
ql_dbg(ql_dbg_io, vha, 0x3070,
"mbx abort_command failed.\n");
spin_lock_irqsave(sp->qpair->qp_lock_ptr, flags);
for (h = 1; h < sp->qpair->req->num_outstanding_cmds; h++) {
if (sp->qpair->req->outstanding_cmds[h] == sp) {
sp->qpair->req->outstanding_cmds[h] = NULL;
break;
}
}
spin_unlock_irqrestore(sp->qpair->qp_lock_ptr, flags);
complete(&lio->u.els_logo.comp);
} else {
ql_dbg(ql_dbg_io, vha, 0x3071,
"mbx abort_command success.\n");
}
}
static void qla2x00_els_dcmd_sp_done(srb_t *sp, int res)
{
fc_port_t *fcport = sp->fcport;
struct srb_iocb *lio = &sp->u.iocb_cmd;
struct scsi_qla_host *vha = sp->vha;
ql_dbg(ql_dbg_io, vha, 0x3072,
"%s hdl=%x, portid=%02x%02x%02x done\n",
sp->name, sp->handle, fcport->d_id.b.domain,
fcport->d_id.b.area, fcport->d_id.b.al_pa);
complete(&lio->u.els_logo.comp);
}
int
qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode,
port_id_t remote_did)
{
srb_t *sp;
fc_port_t *fcport = NULL;
struct srb_iocb *elsio = NULL;
struct qla_hw_data *ha = vha->hw;
struct els_logo_payload logo_pyld;
int rval = QLA_SUCCESS;
fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
if (!fcport) {
ql_log(ql_log_info, vha, 0x70e5, "fcport allocation failed\n");
return -ENOMEM;
}
/* Alloc SRB structure */
sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
if (!sp) {
kfree(fcport);
ql_log(ql_log_info, vha, 0x70e6,
"SRB allocation failed\n");
return -ENOMEM;
}
elsio = &sp->u.iocb_cmd;
fcport->loop_id = 0xFFFF;
fcport->d_id.b.domain = remote_did.b.domain;
fcport->d_id.b.area = remote_did.b.area;
fcport->d_id.b.al_pa = remote_did.b.al_pa;
ql_dbg(ql_dbg_io, vha, 0x3073, "portid=%02x%02x%02x done\n",
fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa);
sp->type = SRB_ELS_DCMD;
sp->name = "ELS_DCMD";
sp->fcport = fcport;
elsio->timeout = qla2x00_els_dcmd_iocb_timeout;
qla2x00_init_timer(sp, ELS_DCMD_TIMEOUT);
init_completion(&sp->u.iocb_cmd.u.els_logo.comp);
sp->done = qla2x00_els_dcmd_sp_done;
sp->free = qla2x00_els_dcmd_sp_free;
elsio->u.els_logo.els_logo_pyld = dma_alloc_coherent(&ha->pdev->dev,
DMA_POOL_SIZE, &elsio->u.els_logo.els_logo_pyld_dma,
GFP_KERNEL);
if (!elsio->u.els_logo.els_logo_pyld) {
sp->free(sp);
return QLA_FUNCTION_FAILED;
}
memset(&logo_pyld, 0, sizeof(struct els_logo_payload));
elsio->u.els_logo.els_cmd = els_opcode;
logo_pyld.opcode = els_opcode;
logo_pyld.s_id[0] = vha->d_id.b.al_pa;
logo_pyld.s_id[1] = vha->d_id.b.area;
logo_pyld.s_id[2] = vha->d_id.b.domain;
host_to_fcp_swap(logo_pyld.s_id, sizeof(uint32_t));
memcpy(&logo_pyld.wwpn, vha->port_name, WWN_SIZE);
memcpy(elsio->u.els_logo.els_logo_pyld, &logo_pyld,
sizeof(struct els_logo_payload));
ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x3075, "LOGO buffer:");
ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x010a,
elsio->u.els_logo.els_logo_pyld,
sizeof(*elsio->u.els_logo.els_logo_pyld));
rval = qla2x00_start_sp(sp);
if (rval != QLA_SUCCESS) {
sp->free(sp);
return QLA_FUNCTION_FAILED;
}
ql_dbg(ql_dbg_io, vha, 0x3074,
"%s LOGO sent, hdl=%x, loopid=%x, portid=%02x%02x%02x.\n",
sp->name, sp->handle, fcport->loop_id, fcport->d_id.b.domain,
fcport->d_id.b.area, fcport->d_id.b.al_pa);
wait_for_completion(&elsio->u.els_logo.comp);
sp->free(sp);
return rval;
}
static void
qla24xx_els_logo_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
{
scsi_qla_host_t *vha = sp->vha;
struct srb_iocb *elsio = &sp->u.iocb_cmd;
els_iocb->entry_type = ELS_IOCB_TYPE;
els_iocb->entry_count = 1;
els_iocb->sys_define = 0;
els_iocb->entry_status = 0;
els_iocb->handle = sp->handle;
els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
els_iocb->tx_dsd_count = cpu_to_le16(1);
els_iocb->vp_index = vha->vp_idx;
els_iocb->sof_type = EST_SOFI3;
els_iocb->rx_dsd_count = 0;
els_iocb->opcode = elsio->u.els_logo.els_cmd;
els_iocb->d_id[0] = sp->fcport->d_id.b.al_pa;
els_iocb->d_id[1] = sp->fcport->d_id.b.area;
els_iocb->d_id[2] = sp->fcport->d_id.b.domain;
/* For SID the byte order is different than DID */
els_iocb->s_id[1] = vha->d_id.b.al_pa;
els_iocb->s_id[2] = vha->d_id.b.area;
els_iocb->s_id[0] = vha->d_id.b.domain;
if (elsio->u.els_logo.els_cmd == ELS_DCMD_PLOGI) {
if (vha->hw->flags.edif_enabled)
els_iocb->control_flags = cpu_to_le16(ECF_SEC_LOGIN);
else
els_iocb->control_flags = 0;
els_iocb->tx_byte_count = els_iocb->tx_len =
cpu_to_le32(sizeof(struct els_plogi_payload));
put_unaligned_le64(elsio->u.els_plogi.els_plogi_pyld_dma,
&els_iocb->tx_address);
els_iocb->rx_dsd_count = cpu_to_le16(1);
els_iocb->rx_byte_count = els_iocb->rx_len =
cpu_to_le32(sizeof(struct els_plogi_payload));
put_unaligned_le64(elsio->u.els_plogi.els_resp_pyld_dma,
&els_iocb->rx_address);
ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x3073,
"PLOGI ELS IOCB:\n");
ql_dump_buffer(ql_log_info, vha, 0x0109,
(uint8_t *)els_iocb,
sizeof(*els_iocb));
} else {
els_iocb->tx_byte_count =
cpu_to_le32(sizeof(struct els_logo_payload));
put_unaligned_le64(elsio->u.els_logo.els_logo_pyld_dma,
&els_iocb->tx_address);
els_iocb->tx_len = cpu_to_le32(sizeof(struct els_logo_payload));
els_iocb->rx_byte_count = 0;
els_iocb->rx_address = 0;
els_iocb->rx_len = 0;
ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x3076,
"LOGO ELS IOCB:");
ql_dump_buffer(ql_log_info, vha, 0x010b,
els_iocb,
sizeof(*els_iocb));
}
sp->vha->qla_stats.control_requests++;
}
static void
qla2x00_els_dcmd2_iocb_timeout(void *data)
{
srb_t *sp = data;
fc_port_t *fcport = sp->fcport;
struct scsi_qla_host *vha = sp->vha;
unsigned long flags = 0;
int res, h;
ql_dbg(ql_dbg_io + ql_dbg_disc, vha, 0x3069,
"%s hdl=%x ELS Timeout, %8phC portid=%06x\n",
sp->name, sp->handle, fcport->port_name, fcport->d_id.b24);
/* Abort the exchange */
res = qla24xx_async_abort_cmd(sp, false);
ql_dbg(ql_dbg_io, vha, 0x3070,
"mbx abort_command %s\n",
(res == QLA_SUCCESS) ? "successful" : "failed");
if (res) {
spin_lock_irqsave(sp->qpair->qp_lock_ptr, flags);
for (h = 1; h < sp->qpair->req->num_outstanding_cmds; h++) {
if (sp->qpair->req->outstanding_cmds[h] == sp) {
sp->qpair->req->outstanding_cmds[h] = NULL;
break;
}
}
spin_unlock_irqrestore(sp->qpair->qp_lock_ptr, flags);
sp->done(sp, QLA_FUNCTION_TIMEOUT);
}
}
void qla2x00_els_dcmd2_free(scsi_qla_host_t *vha, struct els_plogi *els_plogi)
{
if (els_plogi->els_plogi_pyld)
dma_free_coherent(&vha->hw->pdev->dev,
els_plogi->tx_size,
els_plogi->els_plogi_pyld,
els_plogi->els_plogi_pyld_dma);
if (els_plogi->els_resp_pyld)
dma_free_coherent(&vha->hw->pdev->dev,
els_plogi->rx_size,
els_plogi->els_resp_pyld,
els_plogi->els_resp_pyld_dma);
}
static void qla2x00_els_dcmd2_sp_done(srb_t *sp, int res)
{
fc_port_t *fcport = sp->fcport;
struct srb_iocb *lio = &sp->u.iocb_cmd;
struct scsi_qla_host *vha = sp->vha;
struct event_arg ea;
struct qla_work_evt *e;
struct fc_port *conflict_fcport;
port_id_t cid; /* conflict Nport id */
const __le32 *fw_status = sp->u.iocb_cmd.u.els_plogi.fw_status;
u16 lid;
ql_dbg(ql_dbg_disc, vha, 0x3072,
"%s ELS done rc %d hdl=%x, portid=%06x %8phC\n",
sp->name, res, sp->handle, fcport->d_id.b24, fcport->port_name);
fcport->flags &= ~(FCF_ASYNC_SENT|FCF_ASYNC_ACTIVE);
del_timer(&sp->u.iocb_cmd.timer);
if (sp->flags & SRB_WAKEUP_ON_COMP)
complete(&lio->u.els_plogi.comp);
else {
switch (le32_to_cpu(fw_status[0])) {
case CS_DATA_UNDERRUN:
case CS_COMPLETE:
memset(&ea, 0, sizeof(ea));
ea.fcport = fcport;
ea.rc = res;
qla_handle_els_plogi_done(vha, &ea);
break;
case CS_IOCB_ERROR:
switch (le32_to_cpu(fw_status[1])) {
case LSC_SCODE_PORTID_USED:
lid = le32_to_cpu(fw_status[2]) & 0xffff;
qlt_find_sess_invalidate_other(vha,
wwn_to_u64(fcport->port_name),
fcport->d_id, lid, &conflict_fcport);
if (conflict_fcport) {
/*
* Another fcport shares the same
* loop_id & nport id; conflict
* fcport needs to finish cleanup
* before this fcport can proceed
* to login.
*/
conflict_fcport->conflict = fcport;
fcport->login_pause = 1;
ql_dbg(ql_dbg_disc, vha, 0x20ed,
"%s %d %8phC pid %06x inuse with lid %#x post gidpn\n",
__func__, __LINE__,
fcport->port_name,
fcport->d_id.b24, lid);
} else {
ql_dbg(ql_dbg_disc, vha, 0x20ed,
"%s %d %8phC pid %06x inuse with lid %#x sched del\n",
__func__, __LINE__,
fcport->port_name,
fcport->d_id.b24, lid);
qla2x00_clear_loop_id(fcport);
set_bit(lid, vha->hw->loop_id_map);
fcport->loop_id = lid;
fcport->keep_nport_handle = 0;
qlt_schedule_sess_for_deletion(fcport);
}
break;
case LSC_SCODE_NPORT_USED:
cid.b.domain = (le32_to_cpu(fw_status[2]) >> 16)
& 0xff;
cid.b.area = (le32_to_cpu(fw_status[2]) >> 8)
& 0xff;
cid.b.al_pa = le32_to_cpu(fw_status[2]) & 0xff;
cid.b.rsvd_1 = 0;
ql_dbg(ql_dbg_disc, vha, 0x20ec,
"%s %d %8phC lid %#x in use with pid %06x post gnl\n",
__func__, __LINE__, fcport->port_name,
fcport->loop_id, cid.b24);
set_bit(fcport->loop_id,
vha->hw->loop_id_map);
fcport->loop_id = FC_NO_LOOP_ID;
qla24xx_post_gnl_work(vha, fcport);
break;
case LSC_SCODE_NOXCB:
vha->hw->exch_starvation++;
if (vha->hw->exch_starvation > 5) {
ql_log(ql_log_warn, vha, 0xd046,
"Exchange starvation. Resetting RISC\n");
vha->hw->exch_starvation = 0;
set_bit(ISP_ABORT_NEEDED,
&vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
fallthrough;
default:
ql_dbg(ql_dbg_disc, vha, 0x20eb,
"%s %8phC cmd error fw_status 0x%x 0x%x 0x%x\n",
__func__, sp->fcport->port_name,
fw_status[0], fw_status[1], fw_status[2]);
fcport->flags &= ~FCF_ASYNC_SENT;
qla2x00_set_fcport_disc_state(fcport,
DSC_LOGIN_FAILED);
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
break;
}
break;
default:
ql_dbg(ql_dbg_disc, vha, 0x20eb,
"%s %8phC cmd error 2 fw_status 0x%x 0x%x 0x%x\n",
__func__, sp->fcport->port_name,
fw_status[0], fw_status[1], fw_status[2]);
sp->fcport->flags &= ~FCF_ASYNC_SENT;
qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_FAILED);
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
break;
}
e = qla2x00_alloc_work(vha, QLA_EVT_UNMAP);
if (!e) {
struct srb_iocb *elsio = &sp->u.iocb_cmd;
qla2x00_els_dcmd2_free(vha, &elsio->u.els_plogi);
sp->free(sp);
return;
}
e->u.iosb.sp = sp;
qla2x00_post_work(vha, e);
}
}
int
qla24xx_els_dcmd2_iocb(scsi_qla_host_t *vha, int els_opcode,
fc_port_t *fcport, bool wait)
{
srb_t *sp;
struct srb_iocb *elsio = NULL;
struct qla_hw_data *ha = vha->hw;
int rval = QLA_SUCCESS;
void *ptr, *resp_ptr;
/* Alloc SRB structure */
sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
if (!sp) {
ql_log(ql_log_info, vha, 0x70e6,
"SRB allocation failed\n");
fcport->flags &= ~FCF_ASYNC_ACTIVE;
return -ENOMEM;
}
fcport->flags |= FCF_ASYNC_SENT;
qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_PEND);
elsio = &sp->u.iocb_cmd;
ql_dbg(ql_dbg_io, vha, 0x3073,
"%s Enter: PLOGI portid=%06x\n", __func__, fcport->d_id.b24);
sp->type = SRB_ELS_DCMD;
sp->name = "ELS_DCMD";
sp->fcport = fcport;
elsio->timeout = qla2x00_els_dcmd2_iocb_timeout;
if (wait)
sp->flags = SRB_WAKEUP_ON_COMP;
qla2x00_init_timer(sp, ELS_DCMD_TIMEOUT + 2);
sp->done = qla2x00_els_dcmd2_sp_done;
elsio->u.els_plogi.tx_size = elsio->u.els_plogi.rx_size = DMA_POOL_SIZE;
ptr = elsio->u.els_plogi.els_plogi_pyld =
dma_alloc_coherent(&ha->pdev->dev, elsio->u.els_plogi.tx_size,
&elsio->u.els_plogi.els_plogi_pyld_dma, GFP_KERNEL);
if (!elsio->u.els_plogi.els_plogi_pyld) {
rval = QLA_FUNCTION_FAILED;
goto out;
}
resp_ptr = elsio->u.els_plogi.els_resp_pyld =
dma_alloc_coherent(&ha->pdev->dev, elsio->u.els_plogi.rx_size,
&elsio->u.els_plogi.els_resp_pyld_dma, GFP_KERNEL);
if (!elsio->u.els_plogi.els_resp_pyld) {
rval = QLA_FUNCTION_FAILED;
goto out;
}
ql_dbg(ql_dbg_io, vha, 0x3073, "PLOGI %p %p\n", ptr, resp_ptr);
memset(ptr, 0, sizeof(struct els_plogi_payload));
memset(resp_ptr, 0, sizeof(struct els_plogi_payload));
memcpy(elsio->u.els_plogi.els_plogi_pyld->data,
&ha->plogi_els_payld.fl_csp, LOGIN_TEMPLATE_SIZE);
elsio->u.els_plogi.els_cmd = els_opcode;
elsio->u.els_plogi.els_plogi_pyld->opcode = els_opcode;
if (els_opcode == ELS_DCMD_PLOGI && DBELL_ACTIVE(vha)) {
struct fc_els_flogi *p = ptr;
p->fl_csp.sp_features |= cpu_to_be16(FC_SP_FT_SEC);
}
ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x3073, "PLOGI buffer:\n");
ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x0109,
(uint8_t *)elsio->u.els_plogi.els_plogi_pyld,
sizeof(*elsio->u.els_plogi.els_plogi_pyld));
init_completion(&elsio->u.els_plogi.comp);
rval = qla2x00_start_sp(sp);
if (rval != QLA_SUCCESS) {
rval = QLA_FUNCTION_FAILED;
} else {
ql_dbg(ql_dbg_disc, vha, 0x3074,
"%s PLOGI sent, hdl=%x, loopid=%x, to port_id %06x from port_id %06x\n",
sp->name, sp->handle, fcport->loop_id,
fcport->d_id.b24, vha->d_id.b24);
}
if (wait) {
wait_for_completion(&elsio->u.els_plogi.comp);
if (elsio->u.els_plogi.comp_status != CS_COMPLETE)
rval = QLA_FUNCTION_FAILED;
} else {
goto done;
}
out:
fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);
qla2x00_els_dcmd2_free(vha, &elsio->u.els_plogi);
sp->free(sp);
done:
return rval;
}
/* it is assume qpair lock is held */
void qla_els_pt_iocb(struct scsi_qla_host *vha,
struct els_entry_24xx *els_iocb,
struct qla_els_pt_arg *a)
{
els_iocb->entry_type = ELS_IOCB_TYPE;
els_iocb->entry_count = 1;
els_iocb->sys_define = 0;
els_iocb->entry_status = 0;
els_iocb->handle = QLA_SKIP_HANDLE;
els_iocb->nport_handle = a->nport_handle;
els_iocb->rx_xchg_address = a->rx_xchg_address;
els_iocb->tx_dsd_count = cpu_to_le16(1);
els_iocb->vp_index = a->vp_idx;
els_iocb->sof_type = EST_SOFI3;
els_iocb->rx_dsd_count = cpu_to_le16(0);
els_iocb->opcode = a->els_opcode;
els_iocb->d_id[0] = a->did.b.al_pa;
els_iocb->d_id[1] = a->did.b.area;
els_iocb->d_id[2] = a->did.b.domain;
/* For SID the byte order is different than DID */
els_iocb->s_id[1] = vha->d_id.b.al_pa;
els_iocb->s_id[2] = vha->d_id.b.area;
els_iocb->s_id[0] = vha->d_id.b.domain;
els_iocb->control_flags = cpu_to_le16(a->control_flags);
els_iocb->tx_byte_count = cpu_to_le32(a->tx_byte_count);
els_iocb->tx_len = cpu_to_le32(a->tx_len);
put_unaligned_le64(a->tx_addr, &els_iocb->tx_address);
els_iocb->rx_byte_count = cpu_to_le32(a->rx_byte_count);
els_iocb->rx_len = cpu_to_le32(a->rx_len);
put_unaligned_le64(a->rx_addr, &els_iocb->rx_address);
}
static void
qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
{
struct bsg_job *bsg_job = sp->u.bsg_job;
struct fc_bsg_request *bsg_request = bsg_job->request;
els_iocb->entry_type = ELS_IOCB_TYPE;
els_iocb->entry_count = 1;
els_iocb->sys_define = 0;
els_iocb->entry_status = 0;
els_iocb->handle = sp->handle;
els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
els_iocb->tx_dsd_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
els_iocb->vp_index = sp->vha->vp_idx;
els_iocb->sof_type = EST_SOFI3;
els_iocb->rx_dsd_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
els_iocb->opcode =
sp->type == SRB_ELS_CMD_RPT ?
bsg_request->rqst_data.r_els.els_code :
bsg_request->rqst_data.h_els.command_code;
els_iocb->d_id[0] = sp->fcport->d_id.b.al_pa;
els_iocb->d_id[1] = sp->fcport->d_id.b.area;
els_iocb->d_id[2] = sp->fcport->d_id.b.domain;
els_iocb->control_flags = 0;
els_iocb->rx_byte_count =
cpu_to_le32(bsg_job->reply_payload.payload_len);
els_iocb->tx_byte_count =
cpu_to_le32(bsg_job->request_payload.payload_len);
put_unaligned_le64(sg_dma_address(bsg_job->request_payload.sg_list),
&els_iocb->tx_address);
els_iocb->tx_len = cpu_to_le32(sg_dma_len
(bsg_job->request_payload.sg_list));
put_unaligned_le64(sg_dma_address(bsg_job->reply_payload.sg_list),
&els_iocb->rx_address);
els_iocb->rx_len = cpu_to_le32(sg_dma_len
(bsg_job->reply_payload.sg_list));
sp->vha->qla_stats.control_requests++;
}
static void
qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb)
{
uint16_t avail_dsds;
struct dsd64 *cur_dsd;
struct scatterlist *sg;
int index;
uint16_t tot_dsds;
scsi_qla_host_t *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
struct bsg_job *bsg_job = sp->u.bsg_job;
int entry_count = 1;
memset(ct_iocb, 0, sizeof(ms_iocb_entry_t));
ct_iocb->entry_type = CT_IOCB_TYPE;
ct_iocb->entry_status = 0;
ct_iocb->handle1 = sp->handle;
SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id);
ct_iocb->status = cpu_to_le16(0);
ct_iocb->control_flags = cpu_to_le16(0);
ct_iocb->timeout = 0;
ct_iocb->cmd_dsd_count =
cpu_to_le16(bsg_job->request_payload.sg_cnt);
ct_iocb->total_dsd_count =
cpu_to_le16(bsg_job->request_payload.sg_cnt + 1);
ct_iocb->req_bytecount =
cpu_to_le32(bsg_job->request_payload.payload_len);
ct_iocb->rsp_bytecount =
cpu_to_le32(bsg_job->reply_payload.payload_len);
put_unaligned_le64(sg_dma_address(bsg_job->request_payload.sg_list),
&ct_iocb->req_dsd.address);
ct_iocb->req_dsd.length = ct_iocb->req_bytecount;
put_unaligned_le64(sg_dma_address(bsg_job->reply_payload.sg_list),
&ct_iocb->rsp_dsd.address);
ct_iocb->rsp_dsd.length = ct_iocb->rsp_bytecount;
avail_dsds = 1;
cur_dsd = &ct_iocb->rsp_dsd;
index = 0;
tot_dsds = bsg_job->reply_payload.sg_cnt;
for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
cont_a64_entry_t *cont_pkt;
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Five DSDs are available in the Cont.
* Type 1 IOCB.
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
vha->hw->req_q_map[0]);
cur_dsd = cont_pkt->dsd;
avail_dsds = 5;
entry_count++;
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
ct_iocb->entry_count = entry_count;
sp->vha->qla_stats.control_requests++;
}
static void
qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
{
uint16_t avail_dsds;
struct dsd64 *cur_dsd;
struct scatterlist *sg;
int index;
uint16_t cmd_dsds, rsp_dsds;
scsi_qla_host_t *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
struct bsg_job *bsg_job = sp->u.bsg_job;
int entry_count = 1;
cont_a64_entry_t *cont_pkt = NULL;
ct_iocb->entry_type = CT_IOCB_TYPE;
ct_iocb->entry_status = 0;
ct_iocb->sys_define = 0;
ct_iocb->handle = sp->handle;
ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
ct_iocb->vp_index = sp->vha->vp_idx;
ct_iocb->comp_status = cpu_to_le16(0);
cmd_dsds = bsg_job->request_payload.sg_cnt;
rsp_dsds = bsg_job->reply_payload.sg_cnt;
ct_iocb->cmd_dsd_count = cpu_to_le16(cmd_dsds);
ct_iocb->timeout = 0;
ct_iocb->rsp_dsd_count = cpu_to_le16(rsp_dsds);
ct_iocb->cmd_byte_count =
cpu_to_le32(bsg_job->request_payload.payload_len);
avail_dsds = 2;
cur_dsd = ct_iocb->dsd;
index = 0;
for_each_sg(bsg_job->request_payload.sg_list, sg, cmd_dsds, index) {
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Five DSDs are available in the Cont.
* Type 1 IOCB.
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(
vha, ha->req_q_map[0]);
cur_dsd = cont_pkt->dsd;
avail_dsds = 5;
entry_count++;
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
index = 0;
for_each_sg(bsg_job->reply_payload.sg_list, sg, rsp_dsds, index) {
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Five DSDs are available in the Cont.
* Type 1 IOCB.
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
ha->req_q_map[0]);
cur_dsd = cont_pkt->dsd;
avail_dsds = 5;
entry_count++;
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
ct_iocb->entry_count = entry_count;
}
/*
* qla82xx_start_scsi() - Send a SCSI command to the ISP
* @sp: command to send to the ISP
*
* Returns non-zero if a failure occurred, else zero.
*/
int
qla82xx_start_scsi(srb_t *sp)
{
int nseg;
unsigned long flags;
struct scsi_cmnd *cmd;
uint32_t *clr_ptr;
uint32_t handle;
uint16_t cnt;
uint16_t req_cnt;
uint16_t tot_dsds;
struct device_reg_82xx __iomem *reg;
uint32_t dbval;
__be32 *fcp_dl;
uint8_t additional_cdb_len;
struct ct6_dsd *ctx;
struct scsi_qla_host *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
struct req_que *req = NULL;
struct rsp_que *rsp = NULL;
/* Setup device pointers. */
reg = &ha->iobase->isp82;
cmd = GET_CMD_SP(sp);
req = vha->req;
rsp = ha->rsp_q_map[0];
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
dbval = 0x04 | (ha->portnum << 5);
/* Send marker if required */
if (vha->marker_needed != 0) {
if (qla2x00_marker(vha, ha->base_qpair,
0, 0, MK_SYNC_ALL) != QLA_SUCCESS) {
ql_log(ql_log_warn, vha, 0x300c,
"qla2x00_marker failed for cmd=%p.\n", cmd);
return QLA_FUNCTION_FAILED;
}
vha->marker_needed = 0;
}
/* Acquire ring specific lock */
spin_lock_irqsave(&ha->hardware_lock, flags);
handle = qla2xxx_get_next_handle(req);
if (handle == 0)
goto queuing_error;
/* Map the sg table so we have an accurate count of sg entries needed */
if (scsi_sg_count(cmd)) {
nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
scsi_sg_count(cmd), cmd->sc_data_direction);
if (unlikely(!nseg))
goto queuing_error;
} else
nseg = 0;
tot_dsds = nseg;
if (tot_dsds > ql2xshiftctondsd) {
struct cmd_type_6 *cmd_pkt;
uint16_t more_dsd_lists = 0;
struct dsd_dma *dsd_ptr;
uint16_t i;
more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds);
if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) {
ql_dbg(ql_dbg_io, vha, 0x300d,
"Num of DSD list %d is than %d for cmd=%p.\n",
more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN,
cmd);
goto queuing_error;
}
if (more_dsd_lists <= ha->gbl_dsd_avail)
goto sufficient_dsds;
else
more_dsd_lists -= ha->gbl_dsd_avail;
for (i = 0; i < more_dsd_lists; i++) {
dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
if (!dsd_ptr) {
ql_log(ql_log_fatal, vha, 0x300e,
"Failed to allocate memory for dsd_dma "
"for cmd=%p.\n", cmd);
goto queuing_error;
}
dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool,
GFP_ATOMIC, &dsd_ptr->dsd_list_dma);
if (!dsd_ptr->dsd_addr) {
kfree(dsd_ptr);
ql_log(ql_log_fatal, vha, 0x300f,
"Failed to allocate memory for dsd_addr "
"for cmd=%p.\n", cmd);
goto queuing_error;
}
list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list);
ha->gbl_dsd_avail++;
}
sufficient_dsds:
req_cnt = 1;
if (req->cnt < (req_cnt + 2)) {
cnt = (uint16_t)rd_reg_dword_relaxed(
&reg->req_q_out[0]);
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
if (req->cnt < (req_cnt + 2))
goto queuing_error;
}
ctx = sp->u.scmd.ct6_ctx =
mempool_alloc(ha->ctx_mempool, GFP_ATOMIC);
if (!ctx) {
ql_log(ql_log_fatal, vha, 0x3010,
"Failed to allocate ctx for cmd=%p.\n", cmd);
goto queuing_error;
}
memset(ctx, 0, sizeof(struct ct6_dsd));
ctx->fcp_cmnd = dma_pool_zalloc(ha->fcp_cmnd_dma_pool,
GFP_ATOMIC, &ctx->fcp_cmnd_dma);
if (!ctx->fcp_cmnd) {
ql_log(ql_log_fatal, vha, 0x3011,
"Failed to allocate fcp_cmnd for cmd=%p.\n", cmd);
goto queuing_error;
}
/* Initialize the DSD list and dma handle */
INIT_LIST_HEAD(&ctx->dsd_list);
ctx->dsd_use_cnt = 0;
if (cmd->cmd_len > 16) {
additional_cdb_len = cmd->cmd_len - 16;
if ((cmd->cmd_len % 4) != 0) {
/* SCSI command bigger than 16 bytes must be
* multiple of 4
*/
ql_log(ql_log_warn, vha, 0x3012,
"scsi cmd len %d not multiple of 4 "
"for cmd=%p.\n", cmd->cmd_len, cmd);
goto queuing_error_fcp_cmnd;
}
ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4;
} else {
additional_cdb_len = 0;
ctx->fcp_cmnd_len = 12 + 16 + 4;
}
cmd_pkt = (struct cmd_type_6 *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
/* Zero out remaining portion of packet. */
/* tagged queuing modifier -- default is TSK_SIMPLE (0). */
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
/* Set NPORT-ID and LUN number*/
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
cmd_pkt->vp_index = sp->vha->vp_idx;
/* Build IOCB segments */
if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds))
goto queuing_error_fcp_cmnd;
int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
/* build FCP_CMND IU */
int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun);
ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len;
if (cmd->sc_data_direction == DMA_TO_DEVICE)
ctx->fcp_cmnd->additional_cdb_len |= 1;
else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
ctx->fcp_cmnd->additional_cdb_len |= 2;
/* Populate the FCP_PRIO. */
if (ha->flags.fcp_prio_enabled)
ctx->fcp_cmnd->task_attribute |=
sp->fcport->fcp_prio << 3;
memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
fcp_dl = (__be32 *)(ctx->fcp_cmnd->cdb + 16 +
additional_cdb_len);
*fcp_dl = htonl((uint32_t)scsi_bufflen(cmd));
cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len);
put_unaligned_le64(ctx->fcp_cmnd_dma,
&cmd_pkt->fcp_cmnd_dseg_address);
sp->flags |= SRB_FCP_CMND_DMA_VALID;
cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
/* Set total data segment count. */
cmd_pkt->entry_count = (uint8_t)req_cnt;
/* Specify response queue number where
* completion should happen
*/
cmd_pkt->entry_status = (uint8_t) rsp->id;
} else {
struct cmd_type_7 *cmd_pkt;
req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
if (req->cnt < (req_cnt + 2)) {
cnt = (uint16_t)rd_reg_dword_relaxed(
&reg->req_q_out[0]);
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
}
if (req->cnt < (req_cnt + 2))
goto queuing_error;
cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
/* Zero out remaining portion of packet. */
/* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
/* Set NPORT-ID and LUN number*/
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
cmd_pkt->vp_index = sp->vha->vp_idx;
int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun,
sizeof(cmd_pkt->lun));
/* Populate the FCP_PRIO. */
if (ha->flags.fcp_prio_enabled)
cmd_pkt->task |= sp->fcport->fcp_prio << 3;
/* Load SCSI command packet. */
memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
/* Build IOCB segments */
qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req);
/* Set total data segment count. */
cmd_pkt->entry_count = (uint8_t)req_cnt;
/* Specify response queue number where
* completion should happen.
*/
cmd_pkt->entry_status = (uint8_t) rsp->id;
}
/* Build command packet. */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
cmd->host_scribble = (unsigned char *)(unsigned long)handle;
req->cnt -= req_cnt;
wmb();
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else
req->ring_ptr++;
sp->flags |= SRB_DMA_VALID;
/* Set chip new ring index. */
/* write, read and verify logic */
dbval = dbval | (req->id << 8) | (req->ring_index << 16);
if (ql2xdbwr)
qla82xx_wr_32(ha, (uintptr_t __force)ha->nxdb_wr_ptr, dbval);
else {
wrt_reg_dword(ha->nxdb_wr_ptr, dbval);
wmb();
while (rd_reg_dword(ha->nxdb_rd_ptr) != dbval) {
wrt_reg_dword(ha->nxdb_wr_ptr, dbval);
wmb();
}
}
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
queuing_error_fcp_cmnd:
dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma);
queuing_error:
if (tot_dsds)
scsi_dma_unmap(cmd);
if (sp->u.scmd.crc_ctx) {
mempool_free(sp->u.scmd.crc_ctx, ha->ctx_mempool);
sp->u.scmd.crc_ctx = NULL;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_FUNCTION_FAILED;
}
static void
qla24xx_abort_iocb(srb_t *sp, struct abort_entry_24xx *abt_iocb)
{
struct srb_iocb *aio = &sp->u.iocb_cmd;
scsi_qla_host_t *vha = sp->vha;
struct req_que *req = sp->qpair->req;
srb_t *orig_sp = sp->cmd_sp;
memset(abt_iocb, 0, sizeof(struct abort_entry_24xx));
abt_iocb->entry_type = ABORT_IOCB_TYPE;
abt_iocb->entry_count = 1;
abt_iocb->handle = make_handle(req->id, sp->handle);
if (sp->fcport) {
abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
abt_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
abt_iocb->port_id[1] = sp->fcport->d_id.b.area;
abt_iocb->port_id[2] = sp->fcport->d_id.b.domain;
}
abt_iocb->handle_to_abort =
make_handle(le16_to_cpu(aio->u.abt.req_que_no),
aio->u.abt.cmd_hndl);
abt_iocb->vp_index = vha->vp_idx;
abt_iocb->req_que_no = aio->u.abt.req_que_no;
/* need to pass original sp */
if (orig_sp)
qla_nvme_abort_set_option(abt_iocb, orig_sp);
/* Send the command to the firmware */
wmb();
}
static void
qla2x00_mb_iocb(srb_t *sp, struct mbx_24xx_entry *mbx)
{
int i, sz;
mbx->entry_type = MBX_IOCB_TYPE;
mbx->handle = sp->handle;
sz = min(ARRAY_SIZE(mbx->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.out_mb));
for (i = 0; i < sz; i++)
mbx->mb[i] = sp->u.iocb_cmd.u.mbx.out_mb[i];
}
static void
qla2x00_ctpthru_cmd_iocb(srb_t *sp, struct ct_entry_24xx *ct_pkt)
{
sp->u.iocb_cmd.u.ctarg.iocb = ct_pkt;
qla24xx_prep_ms_iocb(sp->vha, &sp->u.iocb_cmd.u.ctarg);
ct_pkt->handle = sp->handle;
}
static void qla2x00_send_notify_ack_iocb(srb_t *sp,
struct nack_to_isp *nack)
{
struct imm_ntfy_from_isp *ntfy = sp->u.iocb_cmd.u.nack.ntfy;
nack->entry_type = NOTIFY_ACK_TYPE;
nack->entry_count = 1;
nack->ox_id = ntfy->ox_id;
nack->u.isp24.handle = sp->handle;
nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
nack->u.isp24.flags = ntfy->u.isp24.flags &
cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
}
nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
nack->u.isp24.status = ntfy->u.isp24.status;
nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
nack->u.isp24.srr_flags = 0;
nack->u.isp24.srr_reject_code = 0;
nack->u.isp24.srr_reject_code_expl = 0;
nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
if (ntfy->u.isp24.status_subcode == ELS_PLOGI &&
(le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP) &&
sp->vha->hw->flags.edif_enabled) {
ql_dbg(ql_dbg_disc, sp->vha, 0x3074,
"%s PLOGI NACK sent with FC SECURITY bit, hdl=%x, loopid=%x, to pid %06x\n",
sp->name, sp->handle, sp->fcport->loop_id,
sp->fcport->d_id.b24);
nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP);
}
}
/*
* Build NVME LS request
*/
static void
qla_nvme_ls(srb_t *sp, struct pt_ls4_request *cmd_pkt)
{
struct srb_iocb *nvme;
nvme = &sp->u.iocb_cmd;
cmd_pkt->entry_type = PT_LS4_REQUEST;
cmd_pkt->entry_count = 1;
cmd_pkt->control_flags = cpu_to_le16(CF_LS4_ORIGINATOR << CF_LS4_SHIFT);
cmd_pkt->timeout = cpu_to_le16(nvme->u.nvme.timeout_sec);
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
cmd_pkt->tx_dseg_count = cpu_to_le16(1);
cmd_pkt->tx_byte_count = cpu_to_le32(nvme->u.nvme.cmd_len);
cmd_pkt->dsd[0].length = cpu_to_le32(nvme->u.nvme.cmd_len);
put_unaligned_le64(nvme->u.nvme.cmd_dma, &cmd_pkt->dsd[0].address);
cmd_pkt->rx_dseg_count = cpu_to_le16(1);
cmd_pkt->rx_byte_count = cpu_to_le32(nvme->u.nvme.rsp_len);
cmd_pkt->dsd[1].length = cpu_to_le32(nvme->u.nvme.rsp_len);
put_unaligned_le64(nvme->u.nvme.rsp_dma, &cmd_pkt->dsd[1].address);
}
static void
qla25xx_ctrlvp_iocb(srb_t *sp, struct vp_ctrl_entry_24xx *vce)
{
int map, pos;
vce->entry_type = VP_CTRL_IOCB_TYPE;
vce->handle = sp->handle;
vce->entry_count = 1;
vce->command = cpu_to_le16(sp->u.iocb_cmd.u.ctrlvp.cmd);
vce->vp_count = cpu_to_le16(1);
/*
* index map in firmware starts with 1; decrement index
* this is ok as we never use index 0
*/
map = (sp->u.iocb_cmd.u.ctrlvp.vp_index - 1) / 8;
pos = (sp->u.iocb_cmd.u.ctrlvp.vp_index - 1) & 7;
vce->vp_idx_map[map] |= 1 << pos;
}
static void
qla24xx_prlo_iocb(srb_t *sp, struct logio_entry_24xx *logio)
{
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
logio->control_flags =
cpu_to_le16(LCF_COMMAND_PRLO|LCF_IMPL_PRLO);
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->port_id[0] = sp->fcport->d_id.b.al_pa;
logio->port_id[1] = sp->fcport->d_id.b.area;
logio->port_id[2] = sp->fcport->d_id.b.domain;
logio->vp_index = sp->fcport->vha->vp_idx;
}
int
qla2x00_start_sp(srb_t *sp)
{
int rval = QLA_SUCCESS;
scsi_qla_host_t *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_qpair *qp = sp->qpair;
void *pkt;
unsigned long flags;
if (vha->hw->flags.eeh_busy)
return -EIO;
spin_lock_irqsave(qp->qp_lock_ptr, flags);
pkt = __qla2x00_alloc_iocbs(sp->qpair, sp);
if (!pkt) {
rval = EAGAIN;
ql_log(ql_log_warn, vha, 0x700c,
"qla2x00_alloc_iocbs failed.\n");
goto done;
}
switch (sp->type) {
case SRB_LOGIN_CMD:
IS_FWI2_CAPABLE(ha) ?
qla24xx_login_iocb(sp, pkt) :
qla2x00_login_iocb(sp, pkt);
break;
case SRB_PRLI_CMD:
qla24xx_prli_iocb(sp, pkt);
break;
case SRB_LOGOUT_CMD:
IS_FWI2_CAPABLE(ha) ?
qla24xx_logout_iocb(sp, pkt) :
qla2x00_logout_iocb(sp, pkt);
break;
case SRB_ELS_CMD_RPT:
case SRB_ELS_CMD_HST:
qla24xx_els_iocb(sp, pkt);
break;
case SRB_ELS_CMD_HST_NOLOGIN:
qla_els_pt_iocb(sp->vha, pkt, &sp->u.bsg_cmd.u.els_arg);
((struct els_entry_24xx *)pkt)->handle = sp->handle;
break;
case SRB_CT_CMD:
IS_FWI2_CAPABLE(ha) ?
qla24xx_ct_iocb(sp, pkt) :
qla2x00_ct_iocb(sp, pkt);
break;
case SRB_ADISC_CMD:
IS_FWI2_CAPABLE(ha) ?
qla24xx_adisc_iocb(sp, pkt) :
qla2x00_adisc_iocb(sp, pkt);
break;
case SRB_TM_CMD:
IS_QLAFX00(ha) ?
qlafx00_tm_iocb(sp, pkt) :
qla24xx_tm_iocb(sp, pkt);
break;
case SRB_FXIOCB_DCMD:
case SRB_FXIOCB_BCMD:
qlafx00_fxdisc_iocb(sp, pkt);
break;
case SRB_NVME_LS:
qla_nvme_ls(sp, pkt);
break;
case SRB_ABT_CMD:
IS_QLAFX00(ha) ?
qlafx00_abort_iocb(sp, pkt) :
qla24xx_abort_iocb(sp, pkt);
break;
case SRB_ELS_DCMD:
qla24xx_els_logo_iocb(sp, pkt);
break;
case SRB_CT_PTHRU_CMD:
qla2x00_ctpthru_cmd_iocb(sp, pkt);
break;
case SRB_MB_IOCB:
qla2x00_mb_iocb(sp, pkt);
break;
case SRB_NACK_PLOGI:
case SRB_NACK_PRLI:
case SRB_NACK_LOGO:
qla2x00_send_notify_ack_iocb(sp, pkt);
break;
case SRB_CTRL_VP:
qla25xx_ctrlvp_iocb(sp, pkt);
break;
case SRB_PRLO_CMD:
qla24xx_prlo_iocb(sp, pkt);
break;
case SRB_SA_UPDATE:
qla24xx_sa_update_iocb(sp, pkt);
break;
case SRB_SA_REPLACE:
qla24xx_sa_replace_iocb(sp, pkt);
break;
default:
break;
}
if (sp->start_timer)
add_timer(&sp->u.iocb_cmd.timer);
wmb();
qla2x00_start_iocbs(vha, qp->req);
done:
spin_unlock_irqrestore(qp->qp_lock_ptr, flags);
return rval;
}
static void
qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha,
struct cmd_bidir *cmd_pkt, uint32_t tot_dsds)
{
uint16_t avail_dsds;
struct dsd64 *cur_dsd;
uint32_t req_data_len = 0;
uint32_t rsp_data_len = 0;
struct scatterlist *sg;
int index;
int entry_count = 1;
struct bsg_job *bsg_job = sp->u.bsg_job;
/*Update entry type to indicate bidir command */
put_unaligned_le32(COMMAND_BIDIRECTIONAL, &cmd_pkt->entry_type);
/* Set the transfer direction, in this set both flags
* Also set the BD_WRAP_BACK flag, firmware will take care
* assigning DID=SID for outgoing pkts.
*/
cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
cmd_pkt->control_flags = cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA |
BD_WRAP_BACK);
req_data_len = rsp_data_len = bsg_job->request_payload.payload_len;
cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len);
cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len);
cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2);
vha->bidi_stats.transfer_bytes += req_data_len;
vha->bidi_stats.io_count++;
vha->qla_stats.output_bytes += req_data_len;
vha->qla_stats.output_requests++;
/* Only one dsd is available for bidirectional IOCB, remaining dsds
* are bundled in continuation iocb
*/
avail_dsds = 1;
cur_dsd = &cmd_pkt->fcp_dsd;
index = 0;
for_each_sg(bsg_job->request_payload.sg_list, sg,
bsg_job->request_payload.sg_cnt, index) {
cont_a64_entry_t *cont_pkt;
/* Allocate additional continuation packets */
if (avail_dsds == 0) {
/* Continuation type 1 IOCB can accomodate
* 5 DSDS
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
cur_dsd = cont_pkt->dsd;
avail_dsds = 5;
entry_count++;
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
/* For read request DSD will always goes to continuation IOCB
* and follow the write DSD. If there is room on the current IOCB
* then it is added to that IOCB else new continuation IOCB is
* allocated.
*/
for_each_sg(bsg_job->reply_payload.sg_list, sg,
bsg_job->reply_payload.sg_cnt, index) {
cont_a64_entry_t *cont_pkt;
/* Allocate additional continuation packets */
if (avail_dsds == 0) {
/* Continuation type 1 IOCB can accomodate
* 5 DSDS
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
cur_dsd = cont_pkt->dsd;
avail_dsds = 5;
entry_count++;
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
/* This value should be same as number of IOCB required for this cmd */
cmd_pkt->entry_count = entry_count;
}
int
qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
{
struct qla_hw_data *ha = vha->hw;
unsigned long flags;
uint32_t handle;
uint16_t req_cnt;
uint16_t cnt;
uint32_t *clr_ptr;
struct cmd_bidir *cmd_pkt = NULL;
struct rsp_que *rsp;
struct req_que *req;
int rval = EXT_STATUS_OK;
rval = QLA_SUCCESS;
rsp = ha->rsp_q_map[0];
req = vha->req;
/* Send marker if required */
if (vha->marker_needed != 0) {
if (qla2x00_marker(vha, ha->base_qpair,
0, 0, MK_SYNC_ALL) != QLA_SUCCESS)
return EXT_STATUS_MAILBOX;
vha->marker_needed = 0;
}
/* Acquire ring specific lock */
spin_lock_irqsave(&ha->hardware_lock, flags);
handle = qla2xxx_get_next_handle(req);
if (handle == 0) {
rval = EXT_STATUS_BUSY;
goto queuing_error;
}
/* Calculate number of IOCB required */
req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
/* Check for room on request queue. */
if (req->cnt < req_cnt + 2) {
if (IS_SHADOW_REG_CAPABLE(ha)) {
cnt = *req->out_ptr;
} else {
cnt = rd_reg_dword_relaxed(req->req_q_out);
if (qla2x00_check_reg16_for_disconnect(vha, cnt))
goto queuing_error;
}
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length -
(req->ring_index - cnt);
}
if (req->cnt < req_cnt + 2) {
rval = EXT_STATUS_BUSY;
goto queuing_error;
}
cmd_pkt = (struct cmd_bidir *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
/* Zero out remaining portion of packet. */
/* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
/* Set NPORT-ID (of vha)*/
cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id);
cmd_pkt->port_id[0] = vha->d_id.b.al_pa;
cmd_pkt->port_id[1] = vha->d_id.b.area;
cmd_pkt->port_id[2] = vha->d_id.b.domain;
qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds);
cmd_pkt->entry_status = (uint8_t) rsp->id;
/* Build command packet. */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
req->cnt -= req_cnt;
/* Send the command to the firmware */
wmb();
qla2x00_start_iocbs(vha, req);
queuing_error:
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return rval;
}