return 0;
}
+
+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)) {
+ 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;
+ }
+
+ 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);
+ if (!wqe)
+ break;
+
+ list_del_init(&wqe->list_entry);
+ rc = _efct_hw_wq_write(wq, wqe);
+ if (rc)
+ break;
+
+ if (wqe->abort_wqe_submit_needed) {
+ wqe->abort_wqe_submit_needed = false;
+ efct_hw_fill_abort_wqe(wq->hw, wqe);
+
+ 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;
+}
+
+int
+efct_efc_bls_send(struct efc *efc, u32 type, struct sli_bls_params *bls)
+{
+ struct efct *efct = efc->base;
+
+ return efct_hw_bls_send(efct, type, bls, NULL, NULL);
+}
+
+int
+efct_hw_bls_send(struct efct *efct, u32 type, struct sli_bls_params *bls_params,
+ void *cb, void *arg)
+{
+ struct efct_hw *hw = &efct->hw;
+ struct efct_hw_io *hio;
+ struct sli_bls_payload bls;
+ int rc;
+
+ if (hw->state != EFCT_HW_STATE_ACTIVE) {
+ efc_log_err(hw->os,
+ "cannot send BLS, HW state=%d\n", hw->state);
+ return -EIO;
+ }
+
+ hio = efct_hw_io_alloc(hw);
+ if (!hio) {
+ efc_log_err(hw->os, "HIO allocation failed\n");
+ return -EIO;
+ }
+
+ hio->done = cb;
+ hio->arg = arg;
+
+ bls_params->xri = hio->indicator;
+ bls_params->tag = hio->reqtag;
+
+ if (type == FC_RCTL_BA_ACC) {
+ hio->type = EFCT_HW_BLS_ACC;
+ bls.type = SLI4_SLI_BLS_ACC;
+ memcpy(&bls.u.acc, bls_params->payload, sizeof(bls.u.acc));
+ } else {
+ hio->type = EFCT_HW_BLS_RJT;
+ bls.type = SLI4_SLI_BLS_RJT;
+ memcpy(&bls.u.rjt, bls_params->payload, sizeof(bls.u.rjt));
+ }
+
+ bls.ox_id = cpu_to_le16(bls_params->ox_id);
+ bls.rx_id = cpu_to_le16(bls_params->rx_id);
+
+ if (sli_xmit_bls_rsp64_wqe(&hw->sli, hio->wqe.wqebuf,
+ &bls, bls_params)) {
+ efc_log_err(hw->os, "XMIT_BLS_RSP64 WQE error\n");
+ return -EIO;
+ }
+
+ hio->xbusy = true;
+
+ /*
+ * Add IO to active io wqe list before submitting, in case the
+ * wcqe processing preempts this thread.
+ */
+ hio->wq->use_count++;
+ rc = efct_hw_wq_write(hio->wq, &hio->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);
+ hio->xbusy = false;
+ }
+
+ return rc;
+}
+
+static int
+efct_els_ssrs_send_cb(struct efct_hw_io *hio, u32 length, int status,
+ u32 ext_status, void *arg)
+{
+ struct efc_disc_io *io = arg;
+
+ efc_disc_io_complete(io, length, status, ext_status);
+ return 0;
+}
+
+static inline void
+efct_fill_els_params(struct efc_disc_io *io, struct sli_els_params *params)
+{
+ u8 *cmd = io->req.virt;
+
+ params->cmd = *cmd;
+ params->s_id = io->s_id;
+ params->d_id = io->d_id;
+ params->ox_id = io->iparam.els.ox_id;
+ params->rpi = io->rpi;
+ params->vpi = io->vpi;
+ params->rpi_registered = io->rpi_registered;
+ params->xmit_len = io->xmit_len;
+ params->rsp_len = io->rsp_len;
+ params->timeout = io->iparam.els.timeout;
+}
+
+static inline void
+efct_fill_ct_params(struct efc_disc_io *io, struct sli_ct_params *params)
+{
+ params->r_ctl = io->iparam.ct.r_ctl;
+ params->type = io->iparam.ct.type;
+ params->df_ctl = io->iparam.ct.df_ctl;
+ params->d_id = io->d_id;
+ params->ox_id = io->iparam.ct.ox_id;
+ params->rpi = io->rpi;
+ params->vpi = io->vpi;
+ params->rpi_registered = io->rpi_registered;
+ params->xmit_len = io->xmit_len;
+ params->rsp_len = io->rsp_len;
+ params->timeout = io->iparam.ct.timeout;
+}
+
+/**
+ * efct_els_hw_srrs_send() - Send a single request and response cmd.
+ * @efc: efc library structure
+ * @io: Discovery IO used to hold els and ct cmd context.
+ *
+ * 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.
+ *
+ * Return: Status of the request.
+ */
+int
+efct_els_hw_srrs_send(struct efc *efc, struct efc_disc_io *io)
+{
+ struct efct *efct = efc->base;
+ struct efct_hw_io *hio;
+ struct efct_hw *hw = &efct->hw;
+ struct efc_dma *send = &io->req;
+ struct efc_dma *receive = &io->rsp;
+ struct sli4_sge *sge = NULL;
+ int rc = 0;
+ u32 len = io->xmit_len;
+ u32 sge0_flags;
+ u32 sge1_flags;
+
+ hio = efct_hw_io_alloc(hw);
+ if (!hio) {
+ pr_err("HIO alloc failed\n");
+ return -EIO;
+ }
+
+ if (hw->state != EFCT_HW_STATE_ACTIVE) {
+ efc_log_debug(hw->os,
+ "cannot send SRRS, HW state=%d\n", hw->state);
+ return -EIO;
+ }
+
+ hio->done = efct_els_ssrs_send_cb;
+ hio->arg = io;
+
+ sge = hio->sgl->virt;
+
+ /* clear both SGE */
+ memset(hio->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->size) {
+ 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 (io->io_type == EFC_DISC_IO_ELS_REQ ||
+ io->io_type == EFC_DISC_IO_CT_REQ) {
+ 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 (io->io_type) {
+ case EFC_DISC_IO_ELS_REQ: {
+ struct sli_els_params els_params;
+
+ hio->type = EFCT_HW_ELS_REQ;
+ efct_fill_els_params(io, &els_params);
+ els_params.xri = hio->indicator;
+ els_params.tag = hio->reqtag;
+
+ if (sli_els_request64_wqe(&hw->sli, hio->wqe.wqebuf, hio->sgl,
+ &els_params)) {
+ efc_log_err(hw->os, "REQ WQE error\n");
+ rc = -EIO;
+ }
+ break;
+ }
+ case EFC_DISC_IO_ELS_RESP: {
+ struct sli_els_params els_params;
+
+ hio->type = EFCT_HW_ELS_RSP;
+ efct_fill_els_params(io, &els_params);
+ els_params.xri = hio->indicator;
+ els_params.tag = hio->reqtag;
+ if (sli_xmit_els_rsp64_wqe(&hw->sli, hio->wqe.wqebuf, send,
+ &els_params)){
+ efc_log_err(hw->os, "RSP WQE error\n");
+ rc = -EIO;
+ }
+ break;
+ }
+ case EFC_DISC_IO_CT_REQ: {
+ struct sli_ct_params ct_params;
+
+ hio->type = EFCT_HW_FC_CT;
+ efct_fill_ct_params(io, &ct_params);
+ ct_params.xri = hio->indicator;
+ ct_params.tag = hio->reqtag;
+ if (sli_gen_request64_wqe(&hw->sli, hio->wqe.wqebuf, hio->sgl,
+ &ct_params)){
+ efc_log_err(hw->os, "GEN WQE error\n");
+ rc = -EIO;
+ }
+ break;
+ }
+ case EFC_DISC_IO_CT_RESP: {
+ struct sli_ct_params ct_params;
+
+ hio->type = EFCT_HW_FC_CT_RSP;
+ efct_fill_ct_params(io, &ct_params);
+ ct_params.xri = hio->indicator;
+ ct_params.tag = hio->reqtag;
+ if (sli_xmit_sequence64_wqe(&hw->sli, hio->wqe.wqebuf, hio->sgl,
+ &ct_params)){
+ efc_log_err(hw->os, "XMIT SEQ WQE error\n");
+ rc = -EIO;
+ }
+ break;
+ }
+ default:
+ efc_log_err(hw->os, "bad SRRS type %#x\n", io->io_type);
+ rc = -EIO;
+ }
+
+ if (rc == 0) {
+ hio->xbusy = true;
+
+ /*
+ * Add IO to active io wqe list before submitting, in case the
+ * wcqe processing preempts this thread.
+ */
+ hio->wq->use_count++;
+ rc = efct_hw_wq_write(hio->wq, &hio->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);
+ hio->xbusy = false;
+ }
+ }
+
+ return rc;
+}
+
+int
+efct_hw_io_send(struct efct_hw *hw, enum efct_hw_io_type type,
+ struct efct_hw_io *io, union efct_hw_io_param_u *iparam,
+ void *cb, void *arg)
+{
+ int rc = 0;
+ bool send_wqe = true;
+
+ if (!io) {
+ pr_err("bad parm hw=%p io=%p\n", hw, io);
+ return -EIO;
+ }
+
+ if (hw->state != EFCT_HW_STATE_ACTIVE) {
+ efc_log_err(hw->os, "cannot send IO, HW state=%d\n", hw->state);
+ return -EIO;
+ }
+
+ /*
+ * Save state needed during later stages
+ */
+ 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(iparam->fcp_tgt.xmit_len);
+
+ if (io->xbusy)
+ *flags |= SLI4_IO_CONTINUATION;
+ else
+ *flags &= ~SLI4_IO_CONTINUATION;
+ iparam->fcp_tgt.xri = io->indicator;
+ iparam->fcp_tgt.tag = io->reqtag;
+
+ if (sli_fcp_treceive64_wqe(&hw->sli, io->wqe.wqebuf,
+ &io->def_sgl, io->first_data_sge,
+ SLI4_CQ_DEFAULT,
+ 0, 0, &iparam->fcp_tgt)) {
+ efc_log_err(hw->os, "TRECEIVE WQE error\n");
+ rc = -EIO;
+ }
+ 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;
+
+ iparam->fcp_tgt.xri = io->indicator;
+ iparam->fcp_tgt.tag = io->reqtag;
+
+ if (sli_fcp_tsend64_wqe(&hw->sli, io->wqe.wqebuf,
+ &io->def_sgl, io->first_data_sge,
+ SLI4_CQ_DEFAULT,
+ 0, 0, &iparam->fcp_tgt)) {
+ efc_log_err(hw->os, "TSEND WQE error\n");
+ rc = -EIO;
+ }
+ 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;
+
+ iparam->fcp_tgt.xri = io->indicator;
+ iparam->fcp_tgt.tag = io->reqtag;
+
+ if (sli_fcp_trsp64_wqe(&hw->sli, io->wqe.wqebuf,
+ &io->def_sgl, SLI4_CQ_DEFAULT,
+ 0, &iparam->fcp_tgt)) {
+ efc_log_err(hw->os, "TRSP WQE error\n");
+ rc = -EIO;
+ }
+
+ break;
+ }
+ default:
+ efc_log_err(hw->os, "unsupported IO type %#x\n", type);
+ rc = -EIO;
+ }
+
+ if (send_wqe && rc == 0) {
+ 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;
+}
+
+int
+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 -ENOSPC;
+ }
+
+ 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,
+ 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 -EIO;
+ }
+
+ /* 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 -EIO;
+ }
+
+ wq->use_count++;
+
+ return 0;
+}
projects / linux.git / commitdiff