Message ID | 20200412033303.29574-26-jsmart2021@gmail.com (mailing list archive) |
---|---|
State | Changes Requested |
Headers | show |
Series | efct: Broadcom (Emulex) FC Target driver | expand |
On 4/12/20 5:32 AM, James Smart wrote: > This patch continues the efct driver population. > > This patch adds driver definitions for: > Routines that write IO to Work queue, send SRRs and raw frames. > > Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com> > Signed-off-by: James Smart <jsmart2021@gmail.com> > > --- > v3: > Reduced arguments for sli_fcp_tsend64_wqe(), sli_fcp_trsp64_wqe(), > sli_fcp_treceive64_wqe() calls > --- > drivers/scsi/elx/efct/efct_hw.c | 519 ++++++++++++++++++++++++++++++++++++++++ > drivers/scsi/elx/efct/efct_hw.h | 19 ++ > 2 files changed, 538 insertions(+) > > diff --git a/drivers/scsi/elx/efct/efct_hw.c b/drivers/scsi/elx/efct/efct_hw.c > index fd3c2dec3ef6..26dd9bd1eeef 100644 > --- a/drivers/scsi/elx/efct/efct_hw.c > +++ b/drivers/scsi/elx/efct/efct_hw.c > @@ -2516,3 +2516,522 @@ efct_hw_flush(struct efct_hw *hw) > > return EFC_SUCCESS; > } > + > +int > +efct_hw_wq_write(struct hw_wq *wq, struct efct_hw_wqe *wqe) > +{ > + int rc = 0; > + unsigned long flags = 0; > + > + spin_lock_irqsave(&wq->queue->lock, flags); > + if (!list_empty(&wq->pending_list)) { > + INIT_LIST_HEAD(&wqe->list_entry); > + list_add_tail(&wqe->list_entry, &wq->pending_list); > + wq->wq_pending_count++; > + while ((wq->free_count > 0) && > + ((wqe = list_first_entry(&wq->pending_list, > + struct efct_hw_wqe, list_entry)) > + != NULL)) { > + list_del(&wqe->list_entry); > + rc = _efct_hw_wq_write(wq, wqe); > + if (rc < 0) > + break; > + if (wqe->abort_wqe_submit_needed) { > + wqe->abort_wqe_submit_needed = false; > + sli_abort_wqe(&wq->hw->sli, > + wqe->wqebuf, > + wq->hw->sli.wqe_size, > + SLI_ABORT_XRI, > + wqe->send_abts, wqe->id, > + 0, wqe->abort_reqtag, > + SLI4_CQ_DEFAULT); > + > + INIT_LIST_HEAD(&wqe->list_entry); > + list_add_tail(&wqe->list_entry, > + &wq->pending_list); > + wq->wq_pending_count++; > + } > + } > + } else { > + if (wq->free_count > 0) { > + rc = _efct_hw_wq_write(wq, wqe); > + } else { > + INIT_LIST_HEAD(&wqe->list_entry); > + list_add_tail(&wqe->list_entry, &wq->pending_list); > + wq->wq_pending_count++; > + } > + } > + > + spin_unlock_irqrestore(&wq->queue->lock, flags); > + > + return rc; > +} > + > +/** > + * This routine supports communication sequences consisting of a single > + * request and single response between two endpoints. Examples include: > + * - Sending an ELS request. > + * - Sending an ELS response - To send an ELS response, the caller must provide > + * the OX_ID from the received request. > + * - Sending a FC Common Transport (FC-CT) request - To send a FC-CT request, > + * the caller must provide the R_CTL, TYPE, and DF_CTL > + * values to place in the FC frame header. > + */ > +enum efct_hw_rtn > +efct_hw_srrs_send(struct efct_hw *hw, enum efct_hw_io_type type, > + struct efct_hw_io *io, > + struct efc_dma *send, u32 len, > + struct efc_dma *receive, struct efc_remote_node *rnode, > + union efct_hw_io_param_u *iparam, > + efct_hw_srrs_cb_t cb, void *arg) > +{ > + struct sli4_sge *sge = NULL; > + enum efct_hw_rtn rc = EFCT_HW_RTN_SUCCESS; > + u16 local_flags = 0; > + u32 sge0_flags; > + u32 sge1_flags; > + > + if (!io || !rnode || !iparam) { > + pr_err("bad parm hw=%p io=%p s=%p r=%p rn=%p iparm=%p\n", > + hw, io, send, receive, rnode, iparam); > + return EFCT_HW_RTN_ERROR; > + } > + > + if (hw->state != EFCT_HW_STATE_ACTIVE) { > + efc_log_test(hw->os, > + "cannot send SRRS, HW state=%d\n", hw->state); > + return EFCT_HW_RTN_ERROR; > + } > + > + io->rnode = rnode; > + io->type = type; > + io->done = cb; > + io->arg = arg; > + > + sge = io->sgl->virt; > + > + /* clear both SGE */ > + memset(io->sgl->virt, 0, 2 * sizeof(struct sli4_sge)); > + > + sge0_flags = le32_to_cpu(sge[0].dw2_flags); > + sge1_flags = le32_to_cpu(sge[1].dw2_flags); > + if (send) { > + sge[0].buffer_address_high = > + cpu_to_le32(upper_32_bits(send->phys)); > + sge[0].buffer_address_low = > + cpu_to_le32(lower_32_bits(send->phys)); > + > + sge0_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); > + > + sge[0].buffer_length = cpu_to_le32(len); > + } > + > + if (type == EFCT_HW_ELS_REQ || type == EFCT_HW_FC_CT) { > + sge[1].buffer_address_high = > + cpu_to_le32(upper_32_bits(receive->phys)); > + sge[1].buffer_address_low = > + cpu_to_le32(lower_32_bits(receive->phys)); > + > + sge1_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); > + sge1_flags |= SLI4_SGE_LAST; > + > + sge[1].buffer_length = cpu_to_le32(receive->size); > + } else { > + sge0_flags |= SLI4_SGE_LAST; > + } > + > + sge[0].dw2_flags = cpu_to_le32(sge0_flags); > + sge[1].dw2_flags = cpu_to_le32(sge1_flags); > + > + switch (type) { > + case EFCT_HW_ELS_REQ: > + if (!send || > + sli_els_request64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, io->sgl, > + *((u8 *)send->virt), > + len, receive->size, > + iparam->els.timeout, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, rnode->indicator, > + rnode->sport->indicator, > + rnode->attached, rnode->fc_id, > + rnode->sport->fc_id)) { > + efc_log_err(hw->os, "REQ WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; I did mention several times that I'm not a big fan of overly long argument lists. Can't you pass in 'io' and 'rnode' directly and cut down on the number of arguments? > + case EFCT_HW_ELS_RSP: > + if (!send || > + sli_xmit_els_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, send, len, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, iparam->els.ox_id, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->attached, rnode->fc_id, > + local_flags, U32_MAX)) { Same here. > + efc_log_err(hw->os, "RSP WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_ELS_RSP_SID: > + if (!send || > + sli_xmit_els_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, send, len, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, > + iparam->els.ox_id, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->attached, rnode->fc_id, > + local_flags, iparam->els.s_id)) { And here. > + efc_log_err(hw->os, "RSP (SID) WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_FC_CT: > + if (!send || > + sli_gen_request64_wqe(&hw->sli, io->wqe.wqebuf, io->sgl, > + len, receive->size, io->indicator, > + io->reqtag, SLI4_CQ_DEFAULT, > + rnode->fc_id, rnode->indicator, > + &iparam->fc_ct)) { And here. > + efc_log_err(hw->os, "GEN WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_FC_CT_RSP: > + if (!send || > + sli_xmit_sequence64_wqe(&hw->sli, io->wqe.wqebuf, > + io->sgl, len, io->indicator, > + io->reqtag, rnode->fc_id, > + rnode->indicator, &iparam->fc_ct)) { And here. > + efc_log_err(hw->os, "XMIT SEQ WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_BLS_ACC: > + case EFCT_HW_BLS_RJT: > + { > + struct sli_bls_payload bls; > + > + if (type == EFCT_HW_BLS_ACC) { > + bls.type = SLI4_SLI_BLS_ACC; > + memcpy(&bls.u.acc, iparam->bls.payload, > + sizeof(bls.u.acc)); > + } else { > + bls.type = SLI4_SLI_BLS_RJT; > + memcpy(&bls.u.rjt, iparam->bls.payload, > + sizeof(bls.u.rjt)); > + } > + > + bls.ox_id = cpu_to_le16(iparam->bls.ox_id); > + bls.rx_id = cpu_to_le16(iparam->bls.rx_id); > + > + if (sli_xmit_bls_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, &bls, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, > + rnode->attached, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->fc_id, rnode->sport->fc_id, > + U32_MAX)) { This simply cries out for doing so ... > + efc_log_err(hw->os, "XMIT_BLS_RSP64 WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + } > + case EFCT_HW_BLS_ACC_SID: > + { > + struct sli_bls_payload bls; > + > + bls.type = SLI4_SLI_BLS_ACC; > + memcpy(&bls.u.acc, iparam->bls.payload, > + sizeof(bls.u.acc)); > + > + bls.ox_id = cpu_to_le16(iparam->bls.ox_id); > + bls.rx_id = cpu_to_le16(iparam->bls.rx_id); > + > + if (sli_xmit_bls_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, &bls, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, > + rnode->attached, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->fc_id, rnode->sport->fc_id, > + iparam->bls.s_id)) { ... Cheers, Hannes
On Sat, Apr 11, 2020 at 08:32:57PM -0700, James Smart wrote: > This patch continues the efct driver population. > > This patch adds driver definitions for: > Routines that write IO to Work queue, send SRRs and raw frames. > > Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com> > Signed-off-by: James Smart <jsmart2021@gmail.com> > > --- > v3: > Reduced arguments for sli_fcp_tsend64_wqe(), sli_fcp_trsp64_wqe(), > sli_fcp_treceive64_wqe() calls > --- > drivers/scsi/elx/efct/efct_hw.c | 519 ++++++++++++++++++++++++++++++++++++++++ > drivers/scsi/elx/efct/efct_hw.h | 19 ++ > 2 files changed, 538 insertions(+) > > diff --git a/drivers/scsi/elx/efct/efct_hw.c b/drivers/scsi/elx/efct/efct_hw.c > index fd3c2dec3ef6..26dd9bd1eeef 100644 > --- a/drivers/scsi/elx/efct/efct_hw.c > +++ b/drivers/scsi/elx/efct/efct_hw.c > @@ -2516,3 +2516,522 @@ efct_hw_flush(struct efct_hw *hw) > > return EFC_SUCCESS; > } > + > +int > +efct_hw_wq_write(struct hw_wq *wq, struct efct_hw_wqe *wqe) > +{ > + int rc = 0; > + unsigned long flags = 0; > + > + spin_lock_irqsave(&wq->queue->lock, flags); > + if (!list_empty(&wq->pending_list)) { > + INIT_LIST_HEAD(&wqe->list_entry); > + list_add_tail(&wqe->list_entry, &wq->pending_list); > + wq->wq_pending_count++; > + while ((wq->free_count > 0) && > + ((wqe = list_first_entry(&wq->pending_list, > + struct efct_hw_wqe, list_entry)) > + != NULL)) { The condition is a hard to read. It be good to restructure it. And maybe moving the body into new function, so the functions code is not crawling down the right border. > + list_del(&wqe->list_entry); > + rc = _efct_hw_wq_write(wq, wqe); > + if (rc < 0) > + break; > + if (wqe->abort_wqe_submit_needed) { > + wqe->abort_wqe_submit_needed = false; > + sli_abort_wqe(&wq->hw->sli, > + wqe->wqebuf, > + wq->hw->sli.wqe_size, > + SLI_ABORT_XRI, > + wqe->send_abts, wqe->id, > + 0, wqe->abort_reqtag, > + SLI4_CQ_DEFAULT); > + > + INIT_LIST_HEAD(&wqe->list_entry); > + list_add_tail(&wqe->list_entry, > + &wq->pending_list); > + wq->wq_pending_count++; > + } > + } > + } else { > + if (wq->free_count > 0) { > + rc = _efct_hw_wq_write(wq, wqe); > + } else { > + INIT_LIST_HEAD(&wqe->list_entry); > + list_add_tail(&wqe->list_entry, &wq->pending_list); > + wq->wq_pending_count++; > + } > + } > + > + spin_unlock_irqrestore(&wq->queue->lock, flags); > + > + return rc; > +} > + > +/** > + * This routine supports communication sequences consisting of a single > + * request and single response between two endpoints. Examples include: > + * - Sending an ELS request. > + * - Sending an ELS response - To send an ELS response, the caller must provide > + * the OX_ID from the received request. > + * - Sending a FC Common Transport (FC-CT) request - To send a FC-CT request, > + * the caller must provide the R_CTL, TYPE, and DF_CTL > + * values to place in the FC frame header. > + */ This is not proper kerneldoc style > +enum efct_hw_rtn > +efct_hw_srrs_send(struct efct_hw *hw, enum efct_hw_io_type type, > + struct efct_hw_io *io, > + struct efc_dma *send, u32 len, > + struct efc_dma *receive, struct efc_remote_node *rnode, > + union efct_hw_io_param_u *iparam, > + efct_hw_srrs_cb_t cb, void *arg) > +{ > + struct sli4_sge *sge = NULL; > + enum efct_hw_rtn rc = EFCT_HW_RTN_SUCCESS; > + u16 local_flags = 0; > + u32 sge0_flags; > + u32 sge1_flags; > + > + if (!io || !rnode || !iparam) { > + pr_err("bad parm hw=%p io=%p s=%p r=%p rn=%p iparm=%p\n", > + hw, io, send, receive, rnode, iparam); > + return EFCT_HW_RTN_ERROR; > + } > + > + if (hw->state != EFCT_HW_STATE_ACTIVE) { > + efc_log_test(hw->os, > + "cannot send SRRS, HW state=%d\n", hw->state); > + return EFCT_HW_RTN_ERROR; > + } > + > + io->rnode = rnode; > + io->type = type; > + io->done = cb; > + io->arg = arg; > + > + sge = io->sgl->virt; > + > + /* clear both SGE */ > + memset(io->sgl->virt, 0, 2 * sizeof(struct sli4_sge)); > + > + sge0_flags = le32_to_cpu(sge[0].dw2_flags); > + sge1_flags = le32_to_cpu(sge[1].dw2_flags); > + if (send) { > + sge[0].buffer_address_high = > + cpu_to_le32(upper_32_bits(send->phys)); > + sge[0].buffer_address_low = > + cpu_to_le32(lower_32_bits(send->phys)); > + > + sge0_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); > + > + sge[0].buffer_length = cpu_to_le32(len); > + } > + > + if (type == EFCT_HW_ELS_REQ || type == EFCT_HW_FC_CT) { > + sge[1].buffer_address_high = > + cpu_to_le32(upper_32_bits(receive->phys)); > + sge[1].buffer_address_low = > + cpu_to_le32(lower_32_bits(receive->phys)); > + > + sge1_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); > + sge1_flags |= SLI4_SGE_LAST; > + > + sge[1].buffer_length = cpu_to_le32(receive->size); > + } else { > + sge0_flags |= SLI4_SGE_LAST; > + } > + > + sge[0].dw2_flags = cpu_to_le32(sge0_flags); > + sge[1].dw2_flags = cpu_to_le32(sge1_flags); > + > + switch (type) { > + case EFCT_HW_ELS_REQ: > + if (!send || Move the switch into a new function and just call it when 'if (send)' > + sli_els_request64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, io->sgl, > + *((u8 *)send->virt), > + len, receive->size, > + iparam->els.timeout, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, rnode->indicator, > + rnode->sport->indicator, > + rnode->attached, rnode->fc_id, > + rnode->sport->fc_id)) { > + efc_log_err(hw->os, "REQ WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_ELS_RSP: > + if (!send || > + sli_xmit_els_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, send, len, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, iparam->els.ox_id, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->attached, rnode->fc_id, > + local_flags, U32_MAX)) { > + efc_log_err(hw->os, "RSP WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_ELS_RSP_SID: > + if (!send || > + sli_xmit_els_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, send, len, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, > + iparam->els.ox_id, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->attached, rnode->fc_id, > + local_flags, iparam->els.s_id)) { > + efc_log_err(hw->os, "RSP (SID) WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_FC_CT: > + if (!send || > + sli_gen_request64_wqe(&hw->sli, io->wqe.wqebuf, io->sgl, > + len, receive->size, io->indicator, > + io->reqtag, SLI4_CQ_DEFAULT, > + rnode->fc_id, rnode->indicator, > + &iparam->fc_ct)) { > + efc_log_err(hw->os, "GEN WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_FC_CT_RSP: > + if (!send || > + sli_xmit_sequence64_wqe(&hw->sli, io->wqe.wqebuf, > + io->sgl, len, io->indicator, > + io->reqtag, rnode->fc_id, > + rnode->indicator, &iparam->fc_ct)) { > + efc_log_err(hw->os, "XMIT SEQ WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + case EFCT_HW_BLS_ACC: > + case EFCT_HW_BLS_RJT: > + { > + struct sli_bls_payload bls; > + > + if (type == EFCT_HW_BLS_ACC) { > + bls.type = SLI4_SLI_BLS_ACC; > + memcpy(&bls.u.acc, iparam->bls.payload, > + sizeof(bls.u.acc)); > + } else { > + bls.type = SLI4_SLI_BLS_RJT; > + memcpy(&bls.u.rjt, iparam->bls.payload, > + sizeof(bls.u.rjt)); > + } > + > + bls.ox_id = cpu_to_le16(iparam->bls.ox_id); > + bls.rx_id = cpu_to_le16(iparam->bls.rx_id); > + > + if (sli_xmit_bls_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, &bls, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, > + rnode->attached, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->fc_id, rnode->sport->fc_id, > + U32_MAX)) { > + efc_log_err(hw->os, "XMIT_BLS_RSP64 WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + } > + case EFCT_HW_BLS_ACC_SID: > + { > + struct sli_bls_payload bls; > + > + bls.type = SLI4_SLI_BLS_ACC; > + memcpy(&bls.u.acc, iparam->bls.payload, > + sizeof(bls.u.acc)); > + > + bls.ox_id = cpu_to_le16(iparam->bls.ox_id); > + bls.rx_id = cpu_to_le16(iparam->bls.rx_id); > + > + if (sli_xmit_bls_rsp64_wqe(&hw->sli, io->wqe.wqebuf, > + hw->sli.wqe_size, &bls, > + io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, > + rnode->attached, > + rnode->indicator, > + rnode->sport->indicator, > + rnode->fc_id, rnode->sport->fc_id, > + iparam->bls.s_id)) { > + efc_log_err(hw->os, "XMIT_BLS_RSP64 WQE SID error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + } > + default: > + efc_log_err(hw->os, "bad SRRS type %#x\n", type); > + rc = EFCT_HW_RTN_ERROR; > + } > + > + if (rc == EFCT_HW_RTN_SUCCESS) { > + > + io->xbusy = true; > + > + /* > + * Add IO to active io wqe list before submitting, in case the > + * wcqe processing preempts this thread. > + */ > + io->wq->use_count++; > + rc = efct_hw_wq_write(io->wq, &io->wqe); > + if (rc >= 0) { > + /* non-negative return is success */ > + rc = 0; > + } else { > + /* failed to write wqe, remove from active wqe list */ > + efc_log_err(hw->os, > + "sli_queue_write failed: %d\n", rc); > + io->xbusy = false; > + } > + } > + > + return rc; > +} > + > +/** > + * Send a read, write, or response IO. > + * > + * This routine supports sending a higher-level IO (for example, FCP) between > + * two endpoints as a target or initiator. Examples include: > + * - Sending read data and good response (target). > + * - Sending a response (target with no data or after receiving write data). > + * . > + * This routine assumes all IOs use the SGL associated with the HW IO. Prior to > + * calling this routine, the data should be loaded using efct_hw_io_add_sge(). > + */ Not proper kerneldoc style > +enum efct_hw_rtn > +efct_hw_io_send(struct efct_hw *hw, enum efct_hw_io_type type, > + struct efct_hw_io *io, > + u32 len, union efct_hw_io_param_u *iparam, > + struct efc_remote_node *rnode, void *cb, void *arg) > +{ > + enum efct_hw_rtn rc = EFCT_HW_RTN_SUCCESS; > + u32 rpi; > + bool send_wqe = true; > + > + if (!io || !rnode || !iparam) { > + pr_err("bad parm hw=%p io=%p iparam=%p rnode=%p\n", > + hw, io, iparam, rnode); > + return EFCT_HW_RTN_ERROR; > + } > + > + if (hw->state != EFCT_HW_STATE_ACTIVE) { > + efc_log_err(hw->os, "cannot send IO, HW state=%d\n", > + hw->state); > + return EFCT_HW_RTN_ERROR; > + } > + > + rpi = rnode->indicator; > + > + /* > + * Save state needed during later stages > + */ > + io->rnode = rnode; > + io->type = type; > + io->done = cb; > + io->arg = arg; > + > + /* > + * Format the work queue entry used to send the IO > + */ > + switch (type) { > + case EFCT_HW_IO_TARGET_WRITE: { > + u16 flags = iparam->fcp_tgt.flags; > + struct fcp_txrdy *xfer = io->xfer_rdy.virt; > + > + /* > + * Fill in the XFER_RDY for IF_TYPE 0 devices > + */ > + xfer->ft_data_ro = cpu_to_be32(iparam->fcp_tgt.offset); > + xfer->ft_burst_len = cpu_to_be32(len); > + > + if (io->xbusy) > + flags |= SLI4_IO_CONTINUATION; > + else > + flags &= ~SLI4_IO_CONTINUATION; > + > + io->tgt_wqe_timeout = iparam->fcp_tgt.timeout; > + > + if (sli_fcp_treceive64_wqe(&hw->sli, io->wqe.wqebuf, > + &io->def_sgl, io->first_data_sge, > + len, io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, rpi, rnode->fc_id, > + 0, 0, &iparam->fcp_tgt)) { > + efc_log_err(hw->os, "TRECEIVE WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + } > + case EFCT_HW_IO_TARGET_READ: { > + u16 flags = iparam->fcp_tgt.flags; > + > + if (io->xbusy) > + flags |= SLI4_IO_CONTINUATION; > + else > + flags &= ~SLI4_IO_CONTINUATION; > + > + io->tgt_wqe_timeout = iparam->fcp_tgt.timeout; > + > + if (sli_fcp_tsend64_wqe(&hw->sli, io->wqe.wqebuf, > + &io->def_sgl, io->first_data_sge, > + len, io->indicator, io->reqtag, > + SLI4_CQ_DEFAULT, rpi, rnode->fc_id, > + 0, 0, &iparam->fcp_tgt)) { > + efc_log_err(hw->os, "TSEND WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + break; > + } > + case EFCT_HW_IO_TARGET_RSP: { > + u16 flags = iparam->fcp_tgt.flags; > + > + if (io->xbusy) > + flags |= SLI4_IO_CONTINUATION; > + else > + flags &= ~SLI4_IO_CONTINUATION; > + > + io->tgt_wqe_timeout = iparam->fcp_tgt.timeout; > + > + if (sli_fcp_trsp64_wqe(&hw->sli, io->wqe.wqebuf, > + &io->def_sgl, len, io->indicator, > + io->reqtag, SLI4_CQ_DEFAULT, rpi, > + rnode->fc_id, 0, &iparam->fcp_tgt)) { > + efc_log_err(hw->os, "TRSP WQE error\n"); > + rc = EFCT_HW_RTN_ERROR; > + } > + > + break; > + } > + default: > + efc_log_err(hw->os, "unsupported IO type %#x\n", type); > + rc = EFCT_HW_RTN_ERROR; > + } > + > + if (send_wqe && rc == EFCT_HW_RTN_SUCCESS) { > + > + io->xbusy = true; > + > + /* > + * Add IO to active io wqe list before submitting, in case the > + * wcqe processing preempts this thread. > + */ > + hw->tcmd_wq_submit[io->wq->instance]++; > + io->wq->use_count++; > + rc = efct_hw_wq_write(io->wq, &io->wqe); > + if (rc >= 0) { > + /* non-negative return is success */ > + rc = 0; > + } else { > + /* failed to write wqe, remove from active wqe list */ > + efc_log_err(hw->os, > + "sli_queue_write failed: %d\n", rc); > + io->xbusy = false; > + } > + } > + > + return rc; > +} > + > +/** > + * Send a raw frame > + * > + * Using the SEND_FRAME_WQE, a frame consisting of header and payload is sent. > + */ kerneldoc > +enum efct_hw_rtn > +efct_hw_send_frame(struct efct_hw *hw, struct fc_frame_header *hdr, > + u8 sof, u8 eof, struct efc_dma *payload, > + struct efct_hw_send_frame_context *ctx, > + void (*callback)(void *arg, u8 *cqe, int status), > + void *arg) > +{ > + int rc; > + struct efct_hw_wqe *wqe; > + u32 xri; > + struct hw_wq *wq; > + > + wqe = &ctx->wqe; > + > + /* populate the callback object */ > + ctx->hw = hw; > + > + /* Fetch and populate request tag */ > + ctx->wqcb = efct_hw_reqtag_alloc(hw, callback, arg); > + if (!ctx->wqcb) { > + efc_log_err(hw->os, "can't allocate request tag\n"); > + return EFCT_HW_RTN_NO_RESOURCES; > + } > + > + wq = hw->hw_wq[0]; > + > + /* Set XRI and RX_ID in the header based on which WQ, and which > + * send_frame_io we are using > + */ > + xri = wq->send_frame_io->indicator; > + > + /* Build the send frame WQE */ > + rc = sli_send_frame_wqe(&hw->sli, wqe->wqebuf, > + hw->sli.wqe_size, sof, eof, > + (u32 *)hdr, payload, payload->len, > + EFCT_HW_SEND_FRAME_TIMEOUT, xri, > + ctx->wqcb->instance_index); > + if (rc) { > + efc_log_err(hw->os, "sli_send_frame_wqe failed: %d\n", > + rc); > + return EFCT_HW_RTN_ERROR; > + } > + > + /* Write to WQ */ > + rc = efct_hw_wq_write(wq, wqe); > + if (rc) { > + efc_log_err(hw->os, "efct_hw_wq_write failed: %d\n", rc); > + return EFCT_HW_RTN_ERROR; > + } > + > + wq->use_count++; > + > + return EFCT_HW_RTN_SUCCESS; > +} > + > +u32 > +efct_hw_io_get_count(struct efct_hw *hw, > + enum efct_hw_io_count_type io_count_type) > +{ > + struct efct_hw_io *io = NULL; > + u32 count = 0; > + unsigned long flags = 0; > + > + spin_lock_irqsave(&hw->io_lock, flags); > + > + switch (io_count_type) { > + case EFCT_HW_IO_INUSE_COUNT: > + list_for_each_entry(io, &hw->io_inuse, list_entry) { > + count = count + 1; > + } > + break; > + case EFCT_HW_IO_FREE_COUNT: > + list_for_each_entry(io, &hw->io_free, list_entry) { > + count = count + 1; > + } > + break; > + case EFCT_HW_IO_WAIT_FREE_COUNT: > + list_for_each_entry(io, &hw->io_wait_free, list_entry) { > + count = count + 1; > + } > + break; > + case EFCT_HW_IO_N_TOTAL_IO_COUNT: > + count = hw->config.n_io; > + break; > + } > + > + spin_unlock_irqrestore(&hw->io_lock, flags); > + > + return count; > +} > diff --git a/drivers/scsi/elx/efct/efct_hw.h b/drivers/scsi/elx/efct/efct_hw.h > index b427a4eda5a3..36a832f32616 100644 > --- a/drivers/scsi/elx/efct/efct_hw.h > +++ b/drivers/scsi/elx/efct/efct_hw.h > @@ -714,4 +714,23 @@ efct_hw_process(struct efct_hw *hw, u32 vector, u32 max_isr_time_msec); > extern int > efct_hw_queue_hash_find(struct efct_queue_hash *hash, u16 id); > > +int efct_hw_wq_write(struct hw_wq *wq, struct efct_hw_wqe *wqe); > +enum efct_hw_rtn > +efct_hw_send_frame(struct efct_hw *hw, struct fc_frame_header *hdr, > + u8 sof, u8 eof, struct efc_dma *payload, > + struct efct_hw_send_frame_context *ctx, > + void (*callback)(void *arg, u8 *cqe, int status), > + void *arg); > +typedef int(*efct_hw_srrs_cb_t)(struct efct_hw_io *io, > + struct efc_remote_node *rnode, u32 length, > + int status, u32 ext_status, void *arg); > +extern enum efct_hw_rtn > +efct_hw_srrs_send(struct efct_hw *hw, enum efct_hw_io_type type, > + struct efct_hw_io *io, > + struct efc_dma *send, u32 len, > + struct efc_dma *receive, struct efc_remote_node *rnode, > + union efct_hw_io_param_u *iparam, > + efct_hw_srrs_cb_t cb, > + void *arg); > + > #endif /* __EFCT_H__ */ > -- > 2.16.4 > Thanks, Daniel
On Thu, Apr 16, 2020 at 10:10:18AM +0200, Hannes Reinecke wrote: > > + switch (type) { > > + case EFCT_HW_ELS_REQ: > > + if (!send || > > + sli_els_request64_wqe(&hw->sli, io->wqe.wqebuf, > > + hw->sli.wqe_size, io->sgl, > > + *((u8 *)send->virt), > > + len, receive->size, > > + iparam->els.timeout, > > + io->indicator, io->reqtag, > > + SLI4_CQ_DEFAULT, rnode->indicator, > > + rnode->sport->indicator, > > + rnode->attached, rnode->fc_id, > > + rnode->sport->fc_id)) { > > + efc_log_err(hw->os, "REQ WQE error\n"); > > + rc = EFCT_HW_RTN_ERROR; > > + } > > + break; > > I did mention several times that I'm not a big fan of overly long argument > lists. > Can't you pass in 'io' and 'rnode' directly and cut down on the number of > arguments? Yes, please!
On 4/16/2020 5:45 AM, Daniel Wagner wrote: > On Thu, Apr 16, 2020 at 10:10:18AM +0200, Hannes Reinecke wrote: >>> + switch (type) { >>> + case EFCT_HW_ELS_REQ: >>> + if (!send || >>> + sli_els_request64_wqe(&hw->sli, io->wqe.wqebuf, >>> + hw->sli.wqe_size, io->sgl, >>> + *((u8 *)send->virt), >>> + len, receive->size, >>> + iparam->els.timeout, >>> + io->indicator, io->reqtag, >>> + SLI4_CQ_DEFAULT, rnode->indicator, >>> + rnode->sport->indicator, >>> + rnode->attached, rnode->fc_id, >>> + rnode->sport->fc_id)) { >>> + efc_log_err(hw->os, "REQ WQE error\n"); >>> + rc = EFCT_HW_RTN_ERROR; >>> + } >>> + break; >> >> I did mention several times that I'm not a big fan of overly long argument >> lists. >> Can't you pass in 'io' and 'rnode' directly and cut down on the number of >> arguments? > > Yes, please! > Agree, and agree with both Hannes' and your comments on this patch. Daniel - also agree with your comments on patches 16 through 23. Thanks -- james
diff --git a/drivers/scsi/elx/efct/efct_hw.c b/drivers/scsi/elx/efct/efct_hw.c index fd3c2dec3ef6..26dd9bd1eeef 100644 --- a/drivers/scsi/elx/efct/efct_hw.c +++ b/drivers/scsi/elx/efct/efct_hw.c @@ -2516,3 +2516,522 @@ efct_hw_flush(struct efct_hw *hw) return EFC_SUCCESS; } + +int +efct_hw_wq_write(struct hw_wq *wq, struct efct_hw_wqe *wqe) +{ + int rc = 0; + unsigned long flags = 0; + + spin_lock_irqsave(&wq->queue->lock, flags); + if (!list_empty(&wq->pending_list)) { + INIT_LIST_HEAD(&wqe->list_entry); + list_add_tail(&wqe->list_entry, &wq->pending_list); + wq->wq_pending_count++; + while ((wq->free_count > 0) && + ((wqe = list_first_entry(&wq->pending_list, + struct efct_hw_wqe, list_entry)) + != NULL)) { + list_del(&wqe->list_entry); + rc = _efct_hw_wq_write(wq, wqe); + if (rc < 0) + break; + if (wqe->abort_wqe_submit_needed) { + wqe->abort_wqe_submit_needed = false; + sli_abort_wqe(&wq->hw->sli, + wqe->wqebuf, + wq->hw->sli.wqe_size, + SLI_ABORT_XRI, + wqe->send_abts, wqe->id, + 0, wqe->abort_reqtag, + SLI4_CQ_DEFAULT); + + INIT_LIST_HEAD(&wqe->list_entry); + list_add_tail(&wqe->list_entry, + &wq->pending_list); + wq->wq_pending_count++; + } + } + } else { + if (wq->free_count > 0) { + rc = _efct_hw_wq_write(wq, wqe); + } else { + INIT_LIST_HEAD(&wqe->list_entry); + list_add_tail(&wqe->list_entry, &wq->pending_list); + wq->wq_pending_count++; + } + } + + spin_unlock_irqrestore(&wq->queue->lock, flags); + + return rc; +} + +/** + * This routine supports communication sequences consisting of a single + * request and single response between two endpoints. Examples include: + * - Sending an ELS request. + * - Sending an ELS response - To send an ELS response, the caller must provide + * the OX_ID from the received request. + * - Sending a FC Common Transport (FC-CT) request - To send a FC-CT request, + * the caller must provide the R_CTL, TYPE, and DF_CTL + * values to place in the FC frame header. + */ +enum efct_hw_rtn +efct_hw_srrs_send(struct efct_hw *hw, enum efct_hw_io_type type, + struct efct_hw_io *io, + struct efc_dma *send, u32 len, + struct efc_dma *receive, struct efc_remote_node *rnode, + union efct_hw_io_param_u *iparam, + efct_hw_srrs_cb_t cb, void *arg) +{ + struct sli4_sge *sge = NULL; + enum efct_hw_rtn rc = EFCT_HW_RTN_SUCCESS; + u16 local_flags = 0; + u32 sge0_flags; + u32 sge1_flags; + + if (!io || !rnode || !iparam) { + pr_err("bad parm hw=%p io=%p s=%p r=%p rn=%p iparm=%p\n", + hw, io, send, receive, rnode, iparam); + return EFCT_HW_RTN_ERROR; + } + + if (hw->state != EFCT_HW_STATE_ACTIVE) { + efc_log_test(hw->os, + "cannot send SRRS, HW state=%d\n", hw->state); + return EFCT_HW_RTN_ERROR; + } + + io->rnode = rnode; + io->type = type; + io->done = cb; + io->arg = arg; + + sge = io->sgl->virt; + + /* clear both SGE */ + memset(io->sgl->virt, 0, 2 * sizeof(struct sli4_sge)); + + sge0_flags = le32_to_cpu(sge[0].dw2_flags); + sge1_flags = le32_to_cpu(sge[1].dw2_flags); + if (send) { + sge[0].buffer_address_high = + cpu_to_le32(upper_32_bits(send->phys)); + sge[0].buffer_address_low = + cpu_to_le32(lower_32_bits(send->phys)); + + sge0_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); + + sge[0].buffer_length = cpu_to_le32(len); + } + + if (type == EFCT_HW_ELS_REQ || type == EFCT_HW_FC_CT) { + sge[1].buffer_address_high = + cpu_to_le32(upper_32_bits(receive->phys)); + sge[1].buffer_address_low = + cpu_to_le32(lower_32_bits(receive->phys)); + + sge1_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); + sge1_flags |= SLI4_SGE_LAST; + + sge[1].buffer_length = cpu_to_le32(receive->size); + } else { + sge0_flags |= SLI4_SGE_LAST; + } + + sge[0].dw2_flags = cpu_to_le32(sge0_flags); + sge[1].dw2_flags = cpu_to_le32(sge1_flags); + + switch (type) { + case EFCT_HW_ELS_REQ: + if (!send || + sli_els_request64_wqe(&hw->sli, io->wqe.wqebuf, + hw->sli.wqe_size, io->sgl, + *((u8 *)send->virt), + len, receive->size, + iparam->els.timeout, + io->indicator, io->reqtag, + SLI4_CQ_DEFAULT, rnode->indicator, + rnode->sport->indicator, + rnode->attached, rnode->fc_id, + rnode->sport->fc_id)) { + efc_log_err(hw->os, "REQ WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + case EFCT_HW_ELS_RSP: + if (!send || + sli_xmit_els_rsp64_wqe(&hw->sli, io->wqe.wqebuf, + hw->sli.wqe_size, send, len, + io->indicator, io->reqtag, + SLI4_CQ_DEFAULT, iparam->els.ox_id, + rnode->indicator, + rnode->sport->indicator, + rnode->attached, rnode->fc_id, + local_flags, U32_MAX)) { + efc_log_err(hw->os, "RSP WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + case EFCT_HW_ELS_RSP_SID: + if (!send || + sli_xmit_els_rsp64_wqe(&hw->sli, io->wqe.wqebuf, + hw->sli.wqe_size, send, len, + io->indicator, io->reqtag, + SLI4_CQ_DEFAULT, + iparam->els.ox_id, + rnode->indicator, + rnode->sport->indicator, + rnode->attached, rnode->fc_id, + local_flags, iparam->els.s_id)) { + efc_log_err(hw->os, "RSP (SID) WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + case EFCT_HW_FC_CT: + if (!send || + sli_gen_request64_wqe(&hw->sli, io->wqe.wqebuf, io->sgl, + len, receive->size, io->indicator, + io->reqtag, SLI4_CQ_DEFAULT, + rnode->fc_id, rnode->indicator, + &iparam->fc_ct)) { + efc_log_err(hw->os, "GEN WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + case EFCT_HW_FC_CT_RSP: + if (!send || + sli_xmit_sequence64_wqe(&hw->sli, io->wqe.wqebuf, + io->sgl, len, io->indicator, + io->reqtag, rnode->fc_id, + rnode->indicator, &iparam->fc_ct)) { + efc_log_err(hw->os, "XMIT SEQ WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + case EFCT_HW_BLS_ACC: + case EFCT_HW_BLS_RJT: + { + struct sli_bls_payload bls; + + if (type == EFCT_HW_BLS_ACC) { + bls.type = SLI4_SLI_BLS_ACC; + memcpy(&bls.u.acc, iparam->bls.payload, + sizeof(bls.u.acc)); + } else { + bls.type = SLI4_SLI_BLS_RJT; + memcpy(&bls.u.rjt, iparam->bls.payload, + sizeof(bls.u.rjt)); + } + + bls.ox_id = cpu_to_le16(iparam->bls.ox_id); + bls.rx_id = cpu_to_le16(iparam->bls.rx_id); + + if (sli_xmit_bls_rsp64_wqe(&hw->sli, io->wqe.wqebuf, + hw->sli.wqe_size, &bls, + io->indicator, io->reqtag, + SLI4_CQ_DEFAULT, + rnode->attached, + rnode->indicator, + rnode->sport->indicator, + rnode->fc_id, rnode->sport->fc_id, + U32_MAX)) { + efc_log_err(hw->os, "XMIT_BLS_RSP64 WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + } + case EFCT_HW_BLS_ACC_SID: + { + struct sli_bls_payload bls; + + bls.type = SLI4_SLI_BLS_ACC; + memcpy(&bls.u.acc, iparam->bls.payload, + sizeof(bls.u.acc)); + + bls.ox_id = cpu_to_le16(iparam->bls.ox_id); + bls.rx_id = cpu_to_le16(iparam->bls.rx_id); + + if (sli_xmit_bls_rsp64_wqe(&hw->sli, io->wqe.wqebuf, + hw->sli.wqe_size, &bls, + io->indicator, io->reqtag, + SLI4_CQ_DEFAULT, + rnode->attached, + rnode->indicator, + rnode->sport->indicator, + rnode->fc_id, rnode->sport->fc_id, + iparam->bls.s_id)) { + efc_log_err(hw->os, "XMIT_BLS_RSP64 WQE SID error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + } + default: + efc_log_err(hw->os, "bad SRRS type %#x\n", type); + rc = EFCT_HW_RTN_ERROR; + } + + if (rc == EFCT_HW_RTN_SUCCESS) { + + io->xbusy = true; + + /* + * Add IO to active io wqe list before submitting, in case the + * wcqe processing preempts this thread. + */ + io->wq->use_count++; + rc = efct_hw_wq_write(io->wq, &io->wqe); + if (rc >= 0) { + /* non-negative return is success */ + rc = 0; + } else { + /* failed to write wqe, remove from active wqe list */ + efc_log_err(hw->os, + "sli_queue_write failed: %d\n", rc); + io->xbusy = false; + } + } + + return rc; +} + +/** + * Send a read, write, or response IO. + * + * This routine supports sending a higher-level IO (for example, FCP) between + * two endpoints as a target or initiator. Examples include: + * - Sending read data and good response (target). + * - Sending a response (target with no data or after receiving write data). + * . + * This routine assumes all IOs use the SGL associated with the HW IO. Prior to + * calling this routine, the data should be loaded using efct_hw_io_add_sge(). + */ +enum efct_hw_rtn +efct_hw_io_send(struct efct_hw *hw, enum efct_hw_io_type type, + struct efct_hw_io *io, + u32 len, union efct_hw_io_param_u *iparam, + struct efc_remote_node *rnode, void *cb, void *arg) +{ + enum efct_hw_rtn rc = EFCT_HW_RTN_SUCCESS; + u32 rpi; + bool send_wqe = true; + + if (!io || !rnode || !iparam) { + pr_err("bad parm hw=%p io=%p iparam=%p rnode=%p\n", + hw, io, iparam, rnode); + return EFCT_HW_RTN_ERROR; + } + + if (hw->state != EFCT_HW_STATE_ACTIVE) { + efc_log_err(hw->os, "cannot send IO, HW state=%d\n", + hw->state); + return EFCT_HW_RTN_ERROR; + } + + rpi = rnode->indicator; + + /* + * Save state needed during later stages + */ + io->rnode = rnode; + io->type = type; + io->done = cb; + io->arg = arg; + + /* + * Format the work queue entry used to send the IO + */ + switch (type) { + case EFCT_HW_IO_TARGET_WRITE: { + u16 flags = iparam->fcp_tgt.flags; + struct fcp_txrdy *xfer = io->xfer_rdy.virt; + + /* + * Fill in the XFER_RDY for IF_TYPE 0 devices + */ + xfer->ft_data_ro = cpu_to_be32(iparam->fcp_tgt.offset); + xfer->ft_burst_len = cpu_to_be32(len); + + if (io->xbusy) + flags |= SLI4_IO_CONTINUATION; + else + flags &= ~SLI4_IO_CONTINUATION; + + io->tgt_wqe_timeout = iparam->fcp_tgt.timeout; + + if (sli_fcp_treceive64_wqe(&hw->sli, io->wqe.wqebuf, + &io->def_sgl, io->first_data_sge, + len, io->indicator, io->reqtag, + SLI4_CQ_DEFAULT, rpi, rnode->fc_id, + 0, 0, &iparam->fcp_tgt)) { + efc_log_err(hw->os, "TRECEIVE WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + } + case EFCT_HW_IO_TARGET_READ: { + u16 flags = iparam->fcp_tgt.flags; + + if (io->xbusy) + flags |= SLI4_IO_CONTINUATION; + else + flags &= ~SLI4_IO_CONTINUATION; + + io->tgt_wqe_timeout = iparam->fcp_tgt.timeout; + + if (sli_fcp_tsend64_wqe(&hw->sli, io->wqe.wqebuf, + &io->def_sgl, io->first_data_sge, + len, io->indicator, io->reqtag, + SLI4_CQ_DEFAULT, rpi, rnode->fc_id, + 0, 0, &iparam->fcp_tgt)) { + efc_log_err(hw->os, "TSEND WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + break; + } + case EFCT_HW_IO_TARGET_RSP: { + u16 flags = iparam->fcp_tgt.flags; + + if (io->xbusy) + flags |= SLI4_IO_CONTINUATION; + else + flags &= ~SLI4_IO_CONTINUATION; + + io->tgt_wqe_timeout = iparam->fcp_tgt.timeout; + + if (sli_fcp_trsp64_wqe(&hw->sli, io->wqe.wqebuf, + &io->def_sgl, len, io->indicator, + io->reqtag, SLI4_CQ_DEFAULT, rpi, + rnode->fc_id, 0, &iparam->fcp_tgt)) { + efc_log_err(hw->os, "TRSP WQE error\n"); + rc = EFCT_HW_RTN_ERROR; + } + + break; + } + default: + efc_log_err(hw->os, "unsupported IO type %#x\n", type); + rc = EFCT_HW_RTN_ERROR; + } + + if (send_wqe && rc == EFCT_HW_RTN_SUCCESS) { + + io->xbusy = true; + + /* + * Add IO to active io wqe list before submitting, in case the + * wcqe processing preempts this thread. + */ + hw->tcmd_wq_submit[io->wq->instance]++; + io->wq->use_count++; + rc = efct_hw_wq_write(io->wq, &io->wqe); + if (rc >= 0) { + /* non-negative return is success */ + rc = 0; + } else { + /* failed to write wqe, remove from active wqe list */ + efc_log_err(hw->os, + "sli_queue_write failed: %d\n", rc); + io->xbusy = false; + } + } + + return rc; +} + +/** + * Send a raw frame + * + * Using the SEND_FRAME_WQE, a frame consisting of header and payload is sent. + */ +enum efct_hw_rtn +efct_hw_send_frame(struct efct_hw *hw, struct fc_frame_header *hdr, + u8 sof, u8 eof, struct efc_dma *payload, + struct efct_hw_send_frame_context *ctx, + void (*callback)(void *arg, u8 *cqe, int status), + void *arg) +{ + int rc; + struct efct_hw_wqe *wqe; + u32 xri; + struct hw_wq *wq; + + wqe = &ctx->wqe; + + /* populate the callback object */ + ctx->hw = hw; + + /* Fetch and populate request tag */ + ctx->wqcb = efct_hw_reqtag_alloc(hw, callback, arg); + if (!ctx->wqcb) { + efc_log_err(hw->os, "can't allocate request tag\n"); + return EFCT_HW_RTN_NO_RESOURCES; + } + + wq = hw->hw_wq[0]; + + /* Set XRI and RX_ID in the header based on which WQ, and which + * send_frame_io we are using + */ + xri = wq->send_frame_io->indicator; + + /* Build the send frame WQE */ + rc = sli_send_frame_wqe(&hw->sli, wqe->wqebuf, + hw->sli.wqe_size, sof, eof, + (u32 *)hdr, payload, payload->len, + EFCT_HW_SEND_FRAME_TIMEOUT, xri, + ctx->wqcb->instance_index); + if (rc) { + efc_log_err(hw->os, "sli_send_frame_wqe failed: %d\n", + rc); + return EFCT_HW_RTN_ERROR; + } + + /* Write to WQ */ + rc = efct_hw_wq_write(wq, wqe); + if (rc) { + efc_log_err(hw->os, "efct_hw_wq_write failed: %d\n", rc); + return EFCT_HW_RTN_ERROR; + } + + wq->use_count++; + + return EFCT_HW_RTN_SUCCESS; +} + +u32 +efct_hw_io_get_count(struct efct_hw *hw, + enum efct_hw_io_count_type io_count_type) +{ + struct efct_hw_io *io = NULL; + u32 count = 0; + unsigned long flags = 0; + + spin_lock_irqsave(&hw->io_lock, flags); + + switch (io_count_type) { + case EFCT_HW_IO_INUSE_COUNT: + list_for_each_entry(io, &hw->io_inuse, list_entry) { + count = count + 1; + } + break; + case EFCT_HW_IO_FREE_COUNT: + list_for_each_entry(io, &hw->io_free, list_entry) { + count = count + 1; + } + break; + case EFCT_HW_IO_WAIT_FREE_COUNT: + list_for_each_entry(io, &hw->io_wait_free, list_entry) { + count = count + 1; + } + break; + case EFCT_HW_IO_N_TOTAL_IO_COUNT: + count = hw->config.n_io; + break; + } + + spin_unlock_irqrestore(&hw->io_lock, flags); + + return count; +} diff --git a/drivers/scsi/elx/efct/efct_hw.h b/drivers/scsi/elx/efct/efct_hw.h index b427a4eda5a3..36a832f32616 100644 --- a/drivers/scsi/elx/efct/efct_hw.h +++ b/drivers/scsi/elx/efct/efct_hw.h @@ -714,4 +714,23 @@ efct_hw_process(struct efct_hw *hw, u32 vector, u32 max_isr_time_msec); extern int efct_hw_queue_hash_find(struct efct_queue_hash *hash, u16 id); +int efct_hw_wq_write(struct hw_wq *wq, struct efct_hw_wqe *wqe); +enum efct_hw_rtn +efct_hw_send_frame(struct efct_hw *hw, struct fc_frame_header *hdr, + u8 sof, u8 eof, struct efc_dma *payload, + struct efct_hw_send_frame_context *ctx, + void (*callback)(void *arg, u8 *cqe, int status), + void *arg); +typedef int(*efct_hw_srrs_cb_t)(struct efct_hw_io *io, + struct efc_remote_node *rnode, u32 length, + int status, u32 ext_status, void *arg); +extern enum efct_hw_rtn +efct_hw_srrs_send(struct efct_hw *hw, enum efct_hw_io_type type, + struct efct_hw_io *io, + struct efc_dma *send, u32 len, + struct efc_dma *receive, struct efc_remote_node *rnode, + union efct_hw_io_param_u *iparam, + efct_hw_srrs_cb_t cb, + void *arg); + #endif /* __EFCT_H__ */