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LeafOS / LeafOS-Devices / android_kernel_samsung_exynos9820 / aa2635012bd82b48a191a9f051035c2992d6f37b / . / drivers / scsi / qla2xxx / qla_iocb.c
blob: 99345099b961d69975eb8bc5adb8d6317df46a0d [file] [log] [blame]
/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2014 QLogic Corporation
*
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#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.
* @cmd: 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 decriptors 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 decriptors 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.
* @ha: 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. */
*((uint32_t *)(&cont_pkt->entry_type)) = cpu_to_le32(CONTINUE_TYPE);
return (cont_pkt);
}
/**
* qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
* @ha: HA context
*
* Returns a pointer to the continuation type 1 IOCB packet.
*/
static inline 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. */
*((uint32_t *)(&cont_pkt->entry_type)) = IS_QLAFX00(vha->hw) ?
cpu_to_le32(CONTINUE_A64_TYPE_FX00) :
cpu_to_le32(CONTINUE_A64_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);
uint8_t guard = scsi_host_get_guard(cmd->device->host);
/* 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 (guard & SHOST_DIX_GUARD_IP)
*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;
}
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;
uint32_t *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 */
*((uint32_t *)(&cmd_pkt->entry_type)) =
cpu_to_le32(COMMAND_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 = 3;
cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
/* 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 = (uint32_t *)&cont_pkt->dseg_0_address;
avail_dsds = 7;
}
*cur_dsd++ = cpu_to_le32(sg_dma_address(sg));
*cur_dsd++ = cpu_to_le32(sg_dma_len(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;
uint32_t *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 */
*((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_A64_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 = 2;
cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
/* Load data segments */
scsi_for_each_sg(cmd, sg, tot_dsds, i) {
dma_addr_t sle_dma;
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 = (uint32_t *)cont_pkt->dseg_0_address;
avail_dsds = 5;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
avail_dsds--;
}
}
/**
* 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 index;
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, req, rsp, 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);
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds)
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
*/
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)) {
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.
* @ha: HA context
* @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 req_que *req,
struct rsp_que *rsp, uint16_t loop_id,
uint64_t lun, uint8_t type)
{
mrk_entry_t *mrk;
struct mrk_entry_24xx *mrk24 = NULL;
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
req = ha->req_q_map[0];
mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, 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 req_que *req,
struct rsp_que *rsp, uint16_t loop_id, uint64_t lun,
uint8_t type)
{
int ret;
unsigned long flags = 0;
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type);
spin_unlock_irqrestore(&vha->hw->hardware_lock, 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->req, vha->req->rsp, 0, 0,
MK_SYNC_ALL) != QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
} else {
if (qla2x00_marker(vha, vha->req, vha->req->rsp, 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)
{
uint32_t *cur_dsd = NULL;
scsi_qla_host_t *vha;
struct qla_hw_data *ha;
struct scsi_cmnd *cmd;
struct scatterlist *cur_seg;
uint32_t *dsd_seg;
void *next_dsd;
uint8_t avail_dsds;
uint8_t first_iocb = 1;
uint32_t dsd_list_len;
struct dsd_dma *dsd_ptr;
struct ct6_dsd *ctx;
cmd = GET_CMD_SP(sp);
/* Update entry type to indicate Command Type 3 IOCB */
*((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_6);
/* No data transfer */
if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE ||
tot_dsds == 0) {
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);
vha->qla_stats.output_bytes += scsi_bufflen(cmd);
vha->qla_stats.output_requests++;
} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
vha->qla_stats.input_bytes += scsi_bufflen(cmd);
vha->qla_stats.input_requests++;
}
cur_seg = scsi_sglist(cmd);
ctx = GET_CMD_CTX_SP(sp);
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;
dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
*dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
*dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len);
} else {
*cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = cpu_to_le32(dsd_list_len);
}
cur_dsd = (uint32_t *)next_dsd;
while (avail_dsds) {
dma_addr_t sle_dma;
sle_dma = sg_dma_address(cur_seg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
cur_seg = sg_next(cur_seg);
avail_dsds--;
}
}
/* Null termination */
*cur_dsd++ = 0;
*cur_dsd++ = 0;
*cur_dsd++ = 0;
cmd_pkt->control_flags |= 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 decriptors 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;
uint32_t *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 */
*((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_7);
/* 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);
vha->qla_stats.output_bytes += scsi_bufflen(cmd);
vha->qla_stats.output_requests++;
} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_READ_DATA);
vha->qla_stats.input_bytes += scsi_bufflen(cmd);
vha->qla_stats.input_requests++;
}
/* One DSD is available in the Command Type 3 IOCB */
avail_dsds = 1;
cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
/* Load data segments */
scsi_for_each_sg(cmd, sg, tot_dsds, i) {
dma_addr_t sle_dma;
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 = (uint32_t *)cont_pkt->dseg_0_address;
avail_dsds = 5;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
avail_dsds--;
}
}
struct fw_dif_context {
uint32_t ref_tag;
uint16_t 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);
switch (scsi_get_prot_type(cmd)) {
case SCSI_PROT_DIF_TYPE0:
/*
* No check for ql2xenablehba_err_chk, as it would be an
* I/O error if hba tag generation is not done.
*/
pkt->ref_tag = cpu_to_le32((uint32_t)
(0xffffffff & scsi_get_lba(cmd)));
if (!qla2x00_hba_err_chk_enabled(sp))
break;
pkt->ref_tag_mask[0] = 0xff;
pkt->ref_tag_mask[1] = 0xff;
pkt->ref_tag_mask[2] = 0xff;
pkt->ref_tag_mask[3] = 0xff;
break;
/*
* For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
* match LBA in CDB + N
*/
case SCSI_PROT_DIF_TYPE2:
pkt->app_tag = cpu_to_le16(0);
pkt->app_tag_mask[0] = 0x0;
pkt->app_tag_mask[1] = 0x0;
pkt->ref_tag = cpu_to_le32((uint32_t)
(0xffffffff & scsi_get_lba(cmd)));
if (!qla2x00_hba_err_chk_enabled(sp))
break;
/* enable ALL bytes of the ref tag */
pkt->ref_tag_mask[0] = 0xff;
pkt->ref_tag_mask[1] = 0xff;
pkt->ref_tag_mask[2] = 0xff;
pkt->ref_tag_mask[3] = 0xff;
break;
/* For Type 3 protection: 16 bit GUARD only */
case SCSI_PROT_DIF_TYPE3:
pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] =
pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] =
0x00;
break;
/*
* For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
* 16 bit app tag.
*/
case SCSI_PROT_DIF_TYPE1:
pkt->ref_tag = cpu_to_le32((uint32_t)
(0xffffffff & scsi_get_lba(cmd)));
pkt->app_tag = cpu_to_le16(0);
pkt->app_tag_mask[0] = 0x0;
pkt->app_tag_mask[1] = 0x0;
if (!qla2x00_hba_err_chk_enabled(sp))
break;
/* enable ALL bytes of the ref tag */
pkt->ref_tag_mask[0] = 0xff;
pkt->ref_tag_mask[1] = 0xff;
pkt->ref_tag_mask[2] = 0xff;
pkt->ref_tag_mask[3] = 0xff;
break;
}
}
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,
uint32_t *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;
uint32_t *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 = cmd->device->sector_size;
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,
&((struct crc_context *)
sp->u.scmd.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 */
*cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = dsd_list_len;
cur_dsd = (uint32_t *)next_dsd;
}
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sle_dma_len);
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++ = 0;
*cur_dsd++ = 0;
*cur_dsd++ = 0;
return 0;
}
int
qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *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;
uint32_t *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) {
dma_addr_t sle_dma;
/* 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,
&((struct crc_context *)
sp->u.scmd.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 */
*cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = dsd_list_len;
cur_dsd = (uint32_t *)next_dsd;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
avail_dsds--;
}
/* Null termination */
*cur_dsd++ = 0;
*cur_dsd++ = 0;
*cur_dsd++ = 0;
return 0;
}
int
qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
uint32_t *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;
int i;
struct scsi_cmnd *cmd;
uint32_t *cur_dsd = dsd;
uint16_t used_dsds = tot_dsds;
struct scsi_qla_host *vha;
if (sp) {
cmd = GET_CMD_SP(sp);
sgl = scsi_prot_sglist(cmd);
vha = sp->vha;
} else if (tc) {
vha = tc->vha;
sgl = tc->prot_sg;
} else {
BUG();
return 1;
}
ql_dbg(ql_dbg_tgt, vha, 0xe021,
"%s: enter\n", __func__);
for_each_sg(sgl, sg, tot_dsds, i) {
dma_addr_t sle_dma;
/* 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,
&((struct crc_context *)
sp->u.scmd.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 */
*cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
*cur_dsd++ = dsd_list_len;
cur_dsd = (uint32_t *)next_dsd;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
avail_dsds--;
}
/* Null termination */
*cur_dsd++ = 0;
*cur_dsd++ = 0;
*cur_dsd++ = 0;
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
*/
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)
{
uint32_t *cur_dsd, *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;
uint8_t *clr_ptr;
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 */
*((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_CRC_2);
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.ctx =
dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
if (!crc_ctx_pkt)
goto crc_queuing_error;
/* Zero out CTX area. */
clr_ptr = (uint8_t *)crc_ctx_pkt;
memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
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);
cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
cmd_pkt->crc_context_len = 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);
cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32(
LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
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 = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
} 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 = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
}
/* 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 = (uint32_t *)(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 = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
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 index;
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 = NULL;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
/* 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, req, rsp, 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);
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds)
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);
if (req->cnt < (req_cnt + 2)) {
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
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->flags |= SRB_DMA_VALID;
/* Set chip new ring index. */
WRT_REG_DWORD(req->req_q_in, req->ring_index);
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;
}
/**
* 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 index;
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, req, rsp, 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);
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds)
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;
if (req->cnt < (req_cnt + 2)) {
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
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++;
/* Set chip new ring index. */
WRT_REG_DWORD(req->req_q_in, req->ring_index);
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) */
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 index;
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 = 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 qla_qpair *qpair = sp->qpair;
/* Acquire qpair specific lock */
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, req, rsp, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS) {
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_FUNCTION_FAILED;
}
vha->marker_needed = 0;
}
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds)
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);
if (req->cnt < (req_cnt + 2)) {
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
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->flags |= SRB_DMA_VALID;
/* Set chip new ring index. */
WRT_REG_DWORD(req->req_q_in, req->ring_index);
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_SUCCESS;
queuing_error:
if (tot_dsds)
scsi_dma_unmap(cmd);
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 index;
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, req, rsp, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS) {
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_FUNCTION_FAILED;
}
vha->marker_needed = 0;
}
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds)
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;
if (req->cnt < (req_cnt + 2)) {
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
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++;
/* 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) */
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 index, 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 (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(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 (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) {
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds) {
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((void __iomem *)&pkt->entry_count, req_cnt);
WRT_REG_WORD((void __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 |= LCF_NVME_PRLI;
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_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);
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)
{
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
logio->control_flags =
cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
if (!sp->fcport->se_sess ||
!sp->fcport->keep_nport_handle)
logio->control_flags |= cpu_to_le16(LCF_FREE_NPORT);
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));
}
}
static void
qla2x00_els_dcmd_sp_free(void *data)
{
srb_t *sp = data;
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;
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);
complete(&lio->u.els_logo.comp);
}
static void
qla2x00_els_dcmd_sp_done(void *ptr, int res)
{
srb_t *sp = ptr;
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;
qla2x00_init_timer(sp, ELS_DCMD_TIMEOUT);
elsio->timeout = qla2x00_els_dcmd_iocb_timeout;
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));
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 = 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->port_id[0] = sp->fcport->d_id.b.al_pa;
els_iocb->port_id[1] = sp->fcport->d_id.b.area;
els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
els_iocb->control_flags = 0;
els_iocb->tx_byte_count = sizeof(struct els_logo_payload);
els_iocb->tx_address[0] =
cpu_to_le32(LSD(elsio->u.els_logo.els_logo_pyld_dma));
els_iocb->tx_address[1] =
cpu_to_le32(MSD(elsio->u.els_logo.els_logo_pyld_dma));
els_iocb->tx_len = cpu_to_le32(sizeof(struct els_logo_payload));
els_iocb->rx_byte_count = 0;
els_iocb->rx_address[0] = 0;
els_iocb->rx_address[1] = 0;
els_iocb->rx_len = 0;
sp->vha->qla_stats.control_requests++;
}
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->port_id[0] = sp->fcport->d_id.b.al_pa;
els_iocb->port_id[1] = sp->fcport->d_id.b.area;
els_iocb->port_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);
els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address
(bsg_job->request_payload.sg_list)));
els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address
(bsg_job->request_payload.sg_list)));
els_iocb->tx_len = cpu_to_le32(sg_dma_len
(bsg_job->request_payload.sg_list));
els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address
(bsg_job->reply_payload.sg_list)));
els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address
(bsg_job->reply_payload.sg_list)));
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;
uint32_t *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 loop_iterartion = 0;
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);
ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address
(bsg_job->request_payload.sg_list)));
ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address
(bsg_job->request_payload.sg_list)));
ct_iocb->dseg_req_length = ct_iocb->req_bytecount;
ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address
(bsg_job->reply_payload.sg_list)));
ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address
(bsg_job->reply_payload.sg_list)));
ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount;
avail_dsds = 1;
cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address;
index = 0;
tot_dsds = bsg_job->reply_payload.sg_cnt;
for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
dma_addr_t sle_dma;
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 = (uint32_t *) cont_pkt->dseg_0_address;
avail_dsds = 5;
entry_count++;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
loop_iterartion++;
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;
uint32_t *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 = (uint32_t *)ct_iocb->dseg_0_address;
index = 0;
for_each_sg(bsg_job->request_payload.sg_list, sg, cmd_dsds, index) {
dma_addr_t sle_dma;
/* 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 = (uint32_t *) cont_pkt->dseg_0_address;
avail_dsds = 5;
entry_count++;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
avail_dsds--;
}
index = 0;
for_each_sg(bsg_job->reply_payload.sg_list, sg, rsp_dsds, index) {
dma_addr_t sle_dma;
/* 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 = (uint32_t *) cont_pkt->dseg_0_address;
avail_dsds = 5;
entry_count++;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(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 index;
uint32_t handle;
uint16_t cnt;
uint16_t req_cnt;
uint16_t tot_dsds;
struct device_reg_82xx __iomem *reg;
uint32_t dbval;
uint32_t *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, req,
rsp, 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);
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds)
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.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_alloc(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 */
memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd));
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 = (uint32_t *)(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);
cmd_pkt->fcp_cmnd_dseg_address[0] =
cpu_to_le32(LSD(ctx->fcp_cmnd_dma));
cmd_pkt->fcp_cmnd_dseg_address[1] =
cpu_to_le32(MSD(ctx->fcp_cmnd_dma));
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.ctx) {
mempool_free(sp->u.scmd.ctx, ha->ctx_mempool);
sp->u.scmd.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 = vha->req;
memset(abt_iocb, 0, sizeof(struct abort_entry_24xx));
abt_iocb->entry_type = ABORT_IOCB_TYPE;
abt_iocb->entry_count = 1;
abt_iocb->handle = cpu_to_le32(MAKE_HANDLE(req->id, sp->handle));
abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
abt_iocb->handle_to_abort =
cpu_to_le32(MAKE_HANDLE(req->id, aio->u.abt.cmd_hndl));
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->vp_index = vha->vp_idx;
abt_iocb->req_que_no = cpu_to_le16(req->id);
/* 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] = cpu_to_le16(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_le32(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;
}
/*
* Build NVME LS request
*/
static int
qla_nvme_ls(srb_t *sp, struct pt_ls4_request *cmd_pkt)
{
struct srb_iocb *nvme;
int rval = QLA_SUCCESS;
nvme = &sp->u.iocb_cmd;
cmd_pkt->entry_type = PT_LS4_REQUEST;
cmd_pkt->entry_count = 1;
cmd_pkt->control_flags = 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 = 1;
cmd_pkt->tx_byte_count = nvme->u.nvme.cmd_len;
cmd_pkt->dseg0_len = nvme->u.nvme.cmd_len;
cmd_pkt->dseg0_address[0] = cpu_to_le32(LSD(nvme->u.nvme.cmd_dma));
cmd_pkt->dseg0_address[1] = cpu_to_le32(MSD(nvme->u.nvme.cmd_dma));
cmd_pkt->rx_dseg_count = 1;
cmd_pkt->rx_byte_count = nvme->u.nvme.rsp_len;
cmd_pkt->dseg1_len = nvme->u.nvme.rsp_len;
cmd_pkt->dseg1_address[0] = cpu_to_le32(LSD(nvme->u.nvme.rsp_dma));
cmd_pkt->dseg1_address[1] = cpu_to_le32(MSD(nvme->u.nvme.rsp_dma));
return rval;
}
int
qla2x00_start_sp(srb_t *sp)
{
int rval;
scsi_qla_host_t *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
void *pkt;
unsigned long flags;
rval = QLA_FUNCTION_FAILED;
spin_lock_irqsave(&ha->hardware_lock, flags);
pkt = qla2x00_alloc_iocbs(vha, sp);
if (!pkt) {
ql_log(ql_log_warn, vha, 0x700c,
"qla2x00_alloc_iocbs failed.\n");
goto done;
}
rval = QLA_SUCCESS;
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_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;
default:
break;
}
wmb();
qla2x00_start_iocbs(vha, ha->req_q_map[0]);
done:
spin_unlock_irqrestore(&ha->hardware_lock, 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;
uint32_t *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 */
*((uint32_t *)(&cmd_pkt->entry_type)) =
cpu_to_le32(COMMAND_BIDIRECTIONAL);
/* 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 = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
index = 0;
for_each_sg(bsg_job->request_payload.sg_list, sg,
bsg_job->request_payload.sg_cnt, index) {
dma_addr_t sle_dma;
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 = (uint32_t *) cont_pkt->dseg_0_address;
avail_dsds = 5;
entry_count++;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(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) {
dma_addr_t sle_dma;
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 = (uint32_t *) cont_pkt->dseg_0_address;
avail_dsds = 5;
entry_count++;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(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;
uint32_t index;
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, req,
rsp, 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);
/* Check for room in outstanding command list. */
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])
break;
}
if (index == req->num_outstanding_cmds) {
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) {
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
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;
}