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scsi: lpfc: Convert SCSI path to use common I/O submission path

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This patch converts the SCSI I/O path from the iocb-centric interfaces to
the common I/O submission path which supports native SLI-4 WQEs.

A wrapper routine is put in place to distinguish SLI-3 from SLI. If SLI-3,
the same iocb-centric paths are used, perhaps with refactored code that is
explicitly for SLI-3.  For SLI-4, any iocb-related formatting is replaced
by wqe-based formatting, although much of that is addressed by the common
wqe templates in the SLI-4 path.

Link: https://lore.kernel.org/r/20201115192646.12977-14-james.smart@broadcom.com
Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2020-11-15 11:26:42 -08:00 committed by Martin K. Petersen
parent 47ff4c510f
commit da255e2e7c
3 changed files with 364 additions and 148 deletions
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4
drivers/scsi/lpfc/lpfc.h
View File

@ -664,6 +664,10 @@ struct lpfc_hba {
void (*lpfc_scsi_prep_cmnd)
(struct lpfc_vport *, struct lpfc_io_buf *,
struct lpfc_nodelist *);
int (*lpfc_scsi_prep_cmnd_buf)
(struct lpfc_vport *vport,
struct lpfc_io_buf *lpfc_cmd,
uint8_t tmo);
/* IOCB interface function jump table entries */
int (*__lpfc_sli_issue_iocb)

453
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -638,7 +638,6 @@ lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
struct lpfc_io_buf *lpfc_cmd;
struct lpfc_sli4_hdw_queue *qp;
struct sli4_sge *sgl;
IOCB_t *iocb;
dma_addr_t pdma_phys_fcp_rsp;
dma_addr_t pdma_phys_fcp_cmd;
uint32_t cpu, idx;
@ -708,24 +707,6 @@ lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
/*
* Since the IOCB for the FCP I/O is built into this
* lpfc_io_buf, initialize it with all known data now.
*/
iocb = &lpfc_cmd->cur_iocbq.iocb;
iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
/* setting the BLP size to 2 * sizeof BDE may not be correct.
* We are setting the bpl to point to out sgl. An sgl's
* entries are 16 bytes, a bpl entries are 12 bytes.
*/
iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
iocb->ulpBdeCount = 1;
iocb->ulpLe = 1;
iocb->ulpClass = CLASS3;
if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
atomic_inc(&ndlp->cmd_pending);
lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
@ -824,6 +805,25 @@ lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
phba->lpfc_release_scsi_buf(phba, psb);
}
/**
* lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
* @data: A pointer to the immediate command data portion of the IOCB.
* @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
*
* The routine copies the entire FCP command from @fcp_cmnd to @data while
* byte swapping the data to big endian format for transmission on the wire.
**/
static void
lpfc_fcpcmd_to_iocb(u8 *data, struct fcp_cmnd *fcp_cmnd)
{
int i, j;
for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
i += sizeof(uint32_t), j++) {
((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
}
}
/**
* lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
* @phba: The Hba for which this call is being executed.
@ -960,6 +960,7 @@ lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
* we need to set word 4 of IOCB here
*/
iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
return 0;
}
@ -3059,7 +3060,9 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
struct sli4_sge *first_data_sgl;
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq;
struct lpfc_vport *vport = phba->pport;
union lpfc_wqe128 *wqe = &pwqeq->wqe;
dma_addr_t physaddr;
uint32_t num_bde = 0;
uint32_t dma_len;
@ -3200,13 +3203,16 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
phba->cfg_enable_pbde) {
bde = (struct ulp_bde64 *)
&(iocb_cmd->unsli3.sli3Words[5]);
&wqe->words[13];
bde->addrLow = first_data_sgl->addr_lo;
bde->addrHigh = first_data_sgl->addr_hi;
bde->tus.f.bdeSize =
le32_to_cpu(first_data_sgl->sge_len);
bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
bde->tus.w = cpu_to_le32(bde->tus.w);
} else {
memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3));
}
} else {
sgl += 1;
@ -3218,11 +3224,15 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
phba->cfg_enable_pbde) {
bde = (struct ulp_bde64 *)
&(iocb_cmd->unsli3.sli3Words[5]);
&wqe->words[13];
memset(bde, 0, (sizeof(uint32_t) * 3));
}
}
/* Word 11 */
if (phba->cfg_enable_pbde)
bf_set(wqe_pbde, &wqe->generic.wqe_com, 1);
/*
* Finish initializing those IOCB fields that are dependent on the
* scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
@ -3230,12 +3240,23 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
* all iocb memory resources are reused.
*/
fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
/* Set first-burst provided it was successfully negotiated */
if (!(phba->hba_flag & HBA_FCOE_MODE) &&
vport->cfg_first_burst_size &&
scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) {
u32 init_len, total_len;
/*
* Due to difference in data length between DIF/non-DIF paths,
* we need to set word 4 of IOCB here
*/
iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
total_len = be32_to_cpu(fcp_cmnd->fcpDl);
init_len = min(total_len, vport->cfg_first_burst_size);
/* Word 4 & 5 */
wqe->fcp_iwrite.initial_xfer_len = init_len;
wqe->fcp_iwrite.total_xfer_len = total_len;
} else {
/* Word 4 */
wqe->fcp_iwrite.total_xfer_len =
be32_to_cpu(fcp_cmnd->fcpDl);
}
/*
* If the OAS driver feature is enabled and the lun is enabled for
@ -3246,6 +3267,17 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *)
scsi_cmnd->device->hostdata)->priority;
/* Word 10 */
bf_set(wqe_oas, &wqe->generic.wqe_com, 1);
bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1);
if (lpfc_cmd->cur_iocbq.priority)
bf_set(wqe_ccp, &wqe->generic.wqe_com,
(lpfc_cmd->cur_iocbq.priority << 1));
else
bf_set(wqe_ccp, &wqe->generic.wqe_com,
(phba->cfg_XLanePriority << 1));
}
return 0;
@ -3271,7 +3303,8 @@ lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl);
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq;
union lpfc_wqe128 *wqe = &pwqeq->wqe;
uint32_t num_sge = 0;
int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
int prot_group_type = 0;
@ -3403,28 +3436,50 @@ lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
/*
* Due to difference in data length between DIF/non-DIF paths,
* we need to set word 4 of IOCB here
*/
iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
/* Set first-burst provided it was successfully negotiated */
if (!(phba->hba_flag & HBA_FCOE_MODE) &&
vport->cfg_first_burst_size &&
scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) {
u32 init_len, total_len;
/*
* For First burst, we may need to adjust the initial transfer
* length for DIF
*/
if (iocb_cmd->un.fcpi.fcpi_XRdy &&
(fcpdl < vport->cfg_first_burst_size))
iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
total_len = be32_to_cpu(fcp_cmnd->fcpDl);
init_len = min(total_len, vport->cfg_first_burst_size);
/* Word 4 & 5 */
wqe->fcp_iwrite.initial_xfer_len = init_len;
wqe->fcp_iwrite.total_xfer_len = total_len;
} else {
/* Word 4 */
wqe->fcp_iwrite.total_xfer_len =
be32_to_cpu(fcp_cmnd->fcpDl);
}
/*
* If the OAS driver feature is enabled and the lun is enabled for
* OAS, set the oas iocb related flags.
*/
if ((phba->cfg_fof) && ((struct lpfc_device_data *)
scsi_cmnd->device->hostdata)->oas_enabled)
scsi_cmnd->device->hostdata)->oas_enabled) {
lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
/* Word 10 */
bf_set(wqe_oas, &wqe->generic.wqe_com, 1);
bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1);
bf_set(wqe_ccp, &wqe->generic.wqe_com,
(phba->cfg_XLanePriority << 1));
}
/* Word 7. DIF Flags */
if (lpfc_cmd->cur_iocbq.iocb_flag & LPFC_IO_DIF_PASS)
bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU);
else if (lpfc_cmd->cur_iocbq.iocb_flag & LPFC_IO_DIF_STRIP)
bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP);
else if (lpfc_cmd->cur_iocbq.iocb_flag & LPFC_IO_DIF_INSERT)
bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT);
lpfc_cmd->cur_iocbq.iocb_flag &= ~(LPFC_IO_DIF_PASS |
LPFC_IO_DIF_STRIP | LPFC_IO_DIF_INSERT);
return 0;
err:
if (lpfc_cmd->seg_cnt)
@ -3483,6 +3538,26 @@ lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
}
/**
* lpfc_scsi_prep_cmnd_buf - Wrapper function for IOCB/WQE mapping of scsi
* buffer
* @phba: The Hba for which this call is being executed.
* @lpfc_cmd: The scsi buffer which is going to be mapped.
* @tmo: Timeout value for IO
*
* This routine initializes IOCB/WQE data structure from scsi command
*
* Return codes:
* 1 - Error
* 0 - Success
**/
static inline int
lpfc_scsi_prep_cmnd_buf(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
uint8_t tmo)
{
return vport->phba->lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, tmo);
}
/**
* lpfc_send_scsi_error_event - Posts an event when there is SCSI error
* @phba: Pointer to hba context object.
@ -4061,72 +4136,30 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
}
/**
* lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
* @data: A pointer to the immediate command data portion of the IOCB.
* @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
* lpfc_scsi_prep_cmnd_buf_s3 - SLI-3 IOCB init for the IO
* @phba: Pointer to vport object for which I/O is executed
* @lpfc_cmd: The scsi buffer which is going to be prep'ed.
* @tmo: timeout value for the IO
*
* The routine copies the entire FCP command from @fcp_cmnd to @data while
* byte swapping the data to big endian format for transmission on the wire.
**/
static void
lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
{
int i, j;
for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
i += sizeof(uint32_t), j++) {
((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
}
}
/**
* lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
* @vport: The virtual port for which this call is being executed.
* @lpfc_cmd: The scsi command which needs to send.
* @pnode: Pointer to lpfc_nodelist.
* Based on the data-direction of the command, initialize IOCB
* in the I/O buffer. Fill in the IOCB fields which are independent
* of the scsi buffer
*
* This routine initializes fcp_cmnd and iocb data structure from scsi command
* to transfer for device with SLI3 interface spec.
* RETURNS 0 - SUCCESS,
**/
static void
lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
struct lpfc_nodelist *pnode)
static int lpfc_scsi_prep_cmnd_buf_s3(struct lpfc_vport *vport,
struct lpfc_io_buf *lpfc_cmd,
uint8_t tmo)
{
struct lpfc_hba *phba = vport->phba;
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
struct lpfc_iocbq *piocbq = &lpfc_cmd->cur_iocbq;
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
struct lpfc_sli4_hdw_queue *hdwq = NULL;
struct lpfc_nodelist *pnode = lpfc_cmd->ndlp;
int datadir = scsi_cmnd->sc_data_direction;
int idx;
uint8_t *ptr;
bool sli4;
uint32_t fcpdl;
u32 fcpdl;
if (!pnode)
return;
lpfc_cmd->fcp_rsp->rspSnsLen = 0;
/* clear task management bits */
lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
int_to_scsilun(lpfc_cmd->pCmd->device->lun,
&lpfc_cmd->fcp_cmnd->fcp_lun);
ptr = &fcp_cmnd->fcpCdb[0];
memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
ptr += scsi_cmnd->cmd_len;
memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
}
fcp_cmnd->fcpCntl1 = SIMPLE_Q;
sli4 = (phba->sli_rev == LPFC_SLI_REV4);
piocbq->iocb.un.fcpi.fcpi_XRdy = 0;
idx = lpfc_cmd->hdwq_no;
if (phba->sli4_hba.hdwq)
hdwq = &phba->sli4_hba.hdwq[idx];
/*
* There are three possibilities here - use scatter-gather segment, use
@ -4140,42 +4173,31 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
iocb_cmd->ulpPU = PARM_READ_CHECK;
if (vport->cfg_first_burst_size &&
(pnode->nlp_flag & NLP_FIRSTBURST)) {
u32 xrdy_len;
fcpdl = scsi_bufflen(scsi_cmnd);
if (fcpdl < vport->cfg_first_burst_size)
piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl;
else
piocbq->iocb.un.fcpi.fcpi_XRdy =
vport->cfg_first_burst_size;
xrdy_len = min(fcpdl,
vport->cfg_first_burst_size);
piocbq->iocb.un.fcpi.fcpi_XRdy = xrdy_len;
}
fcp_cmnd->fcpCntl3 = WRITE_DATA;
if (hdwq)
hdwq->scsi_cstat.output_requests++;
} else {
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
iocb_cmd->ulpPU = PARM_READ_CHECK;
fcp_cmnd->fcpCntl3 = READ_DATA;
if (hdwq)
hdwq->scsi_cstat.input_requests++;
}
} else {
iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
iocb_cmd->un.fcpi.fcpi_parm = 0;
iocb_cmd->ulpPU = 0;
fcp_cmnd->fcpCntl3 = 0;
if (hdwq)
hdwq->scsi_cstat.control_requests++;
}
if (phba->sli_rev == 3 &&
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
/*
* Finish initializing those IOCB fields that are independent
* of the scsi_cmnd request_buffer
*/
piocbq->iocb.ulpContext = pnode->nlp_rpi;
if (sli4)
piocbq->iocb.ulpContext =
phba->sli4_hba.rpi_ids[pnode->nlp_rpi];
if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
piocbq->iocb.ulpFCP2Rcvy = 1;
else
@ -4183,9 +4205,160 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
piocbq->context1 = lpfc_cmd;
piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
if (!piocbq->iocb_cmpl)
piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
piocbq->iocb.ulpTimeout = tmo;
piocbq->vport = vport;
return 0;
}
/**
* lpfc_scsi_prep_cmnd_buf_s4 - SLI-4 WQE init for the IO
* @phba: Pointer to vport object for which I/O is executed
* @lpfc_cmd: The scsi buffer which is going to be prep'ed.
* @tmo: timeout value for the IO
*
* Based on the data-direction of the command copy WQE template
* to I/O buffer WQE. Fill in the WQE fields which are independent
* of the scsi buffer
*
* RETURNS 0 - SUCCESS,
**/
static int lpfc_scsi_prep_cmnd_buf_s4(struct lpfc_vport *vport,
struct lpfc_io_buf *lpfc_cmd,
uint8_t tmo)
{
struct lpfc_hba *phba = vport->phba;
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
struct lpfc_sli4_hdw_queue *hdwq = NULL;
struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq;
struct lpfc_nodelist *pnode = lpfc_cmd->ndlp;
union lpfc_wqe128 *wqe = &pwqeq->wqe;
u16 idx = lpfc_cmd->hdwq_no;
int datadir = scsi_cmnd->sc_data_direction;
hdwq = &phba->sli4_hba.hdwq[idx];
/* Initialize 64 bytes only */
memset(wqe, 0, sizeof(union lpfc_wqe128));
/*
* There are three possibilities here - use scatter-gather segment, use
* the single mapping, or neither.
*/
if (scsi_sg_count(scsi_cmnd)) {
if (datadir == DMA_TO_DEVICE) {
/* From the iwrite template, initialize words 7 - 11 */
memcpy(&wqe->words[7],
&lpfc_iwrite_cmd_template.words[7],
sizeof(uint32_t) * 5);
fcp_cmnd->fcpCntl3 = WRITE_DATA;
if (hdwq)
hdwq->scsi_cstat.output_requests++;
} else {
/* From the iread template, initialize words 7 - 11 */
memcpy(&wqe->words[7],
&lpfc_iread_cmd_template.words[7],
sizeof(uint32_t) * 5);
/* Word 7 */
bf_set(wqe_tmo, &wqe->fcp_iread.wqe_com, tmo);
fcp_cmnd->fcpCntl3 = READ_DATA;
if (hdwq)
hdwq->scsi_cstat.input_requests++;
}
} else {
/* From the icmnd template, initialize words 4 - 11 */
memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4],
sizeof(uint32_t) * 8);
/* Word 7 */
bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, tmo);
fcp_cmnd->fcpCntl3 = 0;
if (hdwq)
hdwq->scsi_cstat.control_requests++;
}
/*
* Finish initializing those WQE fields that are independent
* of the request_buffer
*/
/* Word 3 */
bf_set(payload_offset_len, &wqe->fcp_icmd,
sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
phba->sli4_hba.rpi_ids[pnode->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag);
/* Word 7*/
if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
bf_set(wqe_erp, &wqe->generic.wqe_com, 1);
bf_set(wqe_class, &wqe->generic.wqe_com,
(pnode->nlp_fcp_info & 0x0f));
/* Word 8 */
wqe->generic.wqe_com.abort_tag = pwqeq->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag);
pwqeq->vport = vport;
pwqeq->vport = vport;
pwqeq->context1 = lpfc_cmd;
pwqeq->hba_wqidx = lpfc_cmd->hdwq_no;
if (!pwqeq->iocb_cmpl)
pwqeq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
return 0;
}
/**
* lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
* @vport: The virtual port for which this call is being executed.
* @lpfc_cmd: The scsi command which needs to send.
* @pnode: Pointer to lpfc_nodelist.
*
* This routine initializes fcp_cmnd and iocb data structure from scsi command
* to transfer for device with SLI3 interface spec.
**/
static int
lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
struct lpfc_nodelist *pnode)
{
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
u8 *ptr;
if (!pnode)
return 0;
lpfc_cmd->fcp_rsp->rspSnsLen = 0;
/* clear task management bits */
lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
int_to_scsilun(lpfc_cmd->pCmd->device->lun,
&lpfc_cmd->fcp_cmnd->fcp_lun);
ptr = &fcp_cmnd->fcpCdb[0];
memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
ptr += scsi_cmnd->cmd_len;
memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
}
fcp_cmnd->fcpCntl1 = SIMPLE_Q;
lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, lpfc_cmd->timeout);
return 0;
}
/**
@ -4271,7 +4444,6 @@ lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
{
phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
switch (dev_grp) {
case LPFC_PCI_DEV_LP:
@ -4279,12 +4451,14 @@ lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s3;
break;
case LPFC_PCI_DEV_OC:
phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s4;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
@ -4599,8 +4773,13 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
lpfc_cmd->pCmd = cmnd;
lpfc_cmd->rdata = rdata;
lpfc_cmd->ndlp = ndlp;
lpfc_cmd->cur_iocbq.iocb_cmpl = NULL;
cmnd->host_scribble = (unsigned char *)lpfc_cmd;
err = lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
if (err)
goto out_host_busy_release_buf;
if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
if (vport->phba->cfg_enable_bg) {
lpfc_printf_vlog(vport,
@ -4636,7 +4815,6 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
goto out_host_busy_free_buf;
}
lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO))
@ -4657,24 +4835,30 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
#endif
if (err) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
"3376 FCP could not issue IOCB err %x"
"FCP cmd x%x <%d/%llu> "
"sid: x%x did: x%x oxid: x%x "
"Data: x%x x%x x%x x%x\n",
err, cmnd->cmnd[0],
cmnd->device ? cmnd->device->id : 0xffff,
cmnd->device ? cmnd->device->lun : (u64) -1,
vport->fc_myDID, ndlp->nlp_DID,
phba->sli_rev == LPFC_SLI_REV4 ?
lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
lpfc_cmd->cur_iocbq.iocb.ulpContext,
lpfc_cmd->cur_iocbq.iocb.ulpIoTag,
lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
(uint32_t)
(cmnd->request->timeout / 1000));
"3376 FCP could not issue IOCB err %x "
"FCP cmd x%x <%d/%llu> "
"sid: x%x did: x%x oxid: x%x "
"Data: x%x x%x x%x x%x\n",
err, cmnd->cmnd[0],
cmnd->device ? cmnd->device->id : 0xffff,
cmnd->device ? cmnd->device->lun : (u64)-1,
vport->fc_myDID, ndlp->nlp_DID,
phba->sli_rev == LPFC_SLI_REV4 ?
lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
phba->sli_rev == LPFC_SLI_REV4 ?
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi] :
lpfc_cmd->cur_iocbq.iocb.ulpContext,
lpfc_cmd->cur_iocbq.iotag,
phba->sli_rev == LPFC_SLI_REV4 ?
bf_get(wqe_tmo,
&lpfc_cmd->cur_iocbq.wqe.generic.wqe_com) :
lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
(uint32_t)
(cmnd->request->timeout / 1000));
goto out_host_busy_free_buf;
}
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
lpfc_sli_handle_fast_ring_event(phba,
&phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
@ -4703,6 +4887,7 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--;
}
}
out_host_busy_release_buf:
lpfc_release_scsi_buf(phba, lpfc_cmd);
out_host_busy:
return SCSI_MLQUEUE_HOST_BUSY;

55
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -10251,7 +10251,7 @@ __lpfc_sli_issue_fcp_io_s3(struct lpfc_hba *phba, uint32_t ring_number,
int rc;
spin_lock_irqsave(&phba->hbalock, iflags);
rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
rc = __lpfc_sli_issue_iocb_s3(phba, ring_number, piocb, flag);
spin_unlock_irqrestore(&phba->hbalock, iflags);
return rc;
@ -10275,22 +10275,47 @@ static int
__lpfc_sli_issue_fcp_io_s4(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_iocbq *piocb, uint32_t flag)
{
struct lpfc_sli_ring *pring;
struct lpfc_queue *eq;
unsigned long iflags;
int rc;
struct lpfc_io_buf *lpfc_cmd =
(struct lpfc_io_buf *)piocb->context1;
union lpfc_wqe128 *wqe = &piocb->wqe;
struct sli4_sge *sgl;
eq = phba->sli4_hba.hdwq[piocb->hba_wqidx].hba_eq;
/* 128 byte wqe support here */
sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
pring = lpfc_sli4_calc_ring(phba, piocb);
if (unlikely(pring == NULL))
return IOCB_ERROR;
if (phba->fcp_embed_io) {
struct fcp_cmnd *fcp_cmnd;
u32 *ptr;
spin_lock_irqsave(&pring->ring_lock, iflags);
rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
spin_unlock_irqrestore(&pring->ring_lock, iflags);
fcp_cmnd = lpfc_cmd->fcp_cmnd;
lpfc_sli4_poll_eq(eq, LPFC_POLL_FASTPATH);
/* Word 0-2 - FCP_CMND */
wqe->generic.bde.tus.f.bdeFlags =
BUFF_TYPE_BDE_IMMED;
wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
wqe->generic.bde.addrHigh = 0;
wqe->generic.bde.addrLow = 88; /* Word 22 */
bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
/* Word 22-29 FCP CMND Payload */
ptr = &wqe->words[22];
memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
} else {
/* Word 0-2 - Inline BDE */
wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
wqe->generic.bde.tus.f.bdeSize = sizeof(struct fcp_cmnd);
wqe->generic.bde.addrHigh = sgl->addr_hi;
wqe->generic.bde.addrLow = sgl->addr_lo;
/* Word 10 */
bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
bf_set(wqe_wqes, &wqe->generic.wqe_com, 0);
}
rc = lpfc_sli4_issue_wqe(phba, lpfc_cmd->hdwq, piocb);
return rc;
}
@ -10360,9 +10385,10 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
}
}
}
} else if (piocb->iocb_flag & LPFC_IO_FCP)
} else if (piocb->iocb_flag & LPFC_IO_FCP) {
/* These IO's already have an XRI and a mapped sgl. */
sglq = NULL;
}
else {
/*
* This is a continuation of a commandi,(CX) so this
@ -20468,7 +20494,8 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
}
/* NVME_FCREQ and NVME_ABTS requests */
if (pwqe->iocb_flag & LPFC_IO_NVME) {
if (pwqe->iocb_flag & LPFC_IO_NVME ||
pwqe->iocb_flag & LPFC_IO_FCP) {
/* Get the IO distribution (hba_wqidx) for WQ assignment. */
wq = qp->io_wq;
pring = wq->pring;