new file mode 100644
@@ -0,0 +1,1098 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+/*
+ * Functions to build and send ELS/CT/BLS commands and responses.
+ */
+
+#include "efc.h"
+#include "efc_els.h"
+#include "../libefc_sli/sli4.h"
+
+#define EFC_LOG_ENABLE_ELS_TRACE(efc) \
+ (((efc) != NULL) ? (((efc)->logmask & (1U << 1)) != 0) : 0)
+
+#define node_els_trace() \
+ do { \
+ if (EFC_LOG_ENABLE_ELS_TRACE(efc)) \
+ efc_log_info(efc, "[%s] %-20s\n", \
+ node->display_name, __func__); \
+ } while (0)
+
+#define els_io_printf(els, fmt, ...) \
+ efc_log_err((struct efc *)els->node->efc,\
+ "[%s] %-8s " fmt, \
+ els->node->display_name,\
+ els->display_name, ##__VA_ARGS__)
+
+#define EFC_ELS_RSP_LEN 1024
+#define EFC_ELS_GID_PT_RSP_LEN 8096
+
+struct efc_els_io_req *
+efc_els_io_alloc(struct efc_node *node, u32 reqlen)
+{
+ return efc_els_io_alloc_size(node, reqlen, EFC_ELS_RSP_LEN);
+}
+
+struct efc_els_io_req *
+efc_els_io_alloc_size(struct efc_node *node, u32 reqlen, u32 rsplen)
+{
+ struct efc *efc;
+ struct efc_els_io_req *els;
+ unsigned long flags = 0;
+
+ efc = node->efc;
+
+ spin_lock_irqsave(&node->els_ios_lock, flags);
+
+ if (!node->els_io_enabled) {
+ efc_log_err(efc, "els io alloc disabled\n");
+ spin_unlock_irqrestore(&node->els_ios_lock, flags);
+ return NULL;
+ }
+
+ els = mempool_alloc(efc->els_io_pool, GFP_ATOMIC);
+ if (!els) {
+ atomic_add_return(1, &efc->els_io_alloc_failed_count);
+ spin_unlock_irqrestore(&node->els_ios_lock, flags);
+ return NULL;
+ }
+
+ /* initialize refcount */
+ kref_init(&els->ref);
+ els->release = _efc_els_io_free;
+
+ /* populate generic io fields */
+ els->node = node;
+
+ /* now allocate DMA for request and response */
+ els->io.req.size = reqlen;
+ els->io.req.virt = dma_alloc_coherent(&efc->pci->dev, els->io.req.size,
+ &els->io.req.phys, GFP_DMA);
+ if (!els->io.req.virt) {
+ mempool_free(els, efc->els_io_pool);
+ spin_unlock_irqrestore(&node->els_ios_lock, flags);
+ return NULL;
+ }
+
+ els->io.rsp.size = rsplen;
+ els->io.rsp.virt = dma_alloc_coherent(&efc->pci->dev, els->io.rsp.size,
+ &els->io.rsp.phys, GFP_DMA);
+ if (!els->io.rsp.virt) {
+ dma_free_coherent(&efc->pci->dev, els->io.req.size,
+ els->io.req.virt, els->io.req.phys);
+ mempool_free(els, efc->els_io_pool);
+ els = NULL;
+ }
+
+ if (els) {
+ /* initialize fields */
+ els->els_retries_remaining = EFC_FC_ELS_DEFAULT_RETRIES;
+
+ /* add els structure to ELS IO list */
+ INIT_LIST_HEAD(&els->list_entry);
+ list_add_tail(&els->list_entry, &node->els_ios_list);
+ }
+
+ spin_unlock_irqrestore(&node->els_ios_lock, flags);
+ return els;
+}
+
+void
+efc_els_io_free(struct efc_els_io_req *els)
+{
+ kref_put(&els->ref, els->release);
+}
+
+void
+_efc_els_io_free(struct kref *arg)
+{
+ struct efc_els_io_req *els =
+ container_of(arg, struct efc_els_io_req, ref);
+ struct efc *efc;
+ struct efc_node *node;
+ int send_empty_event = false;
+ unsigned long flags = 0;
+
+ node = els->node;
+ efc = node->efc;
+
+ spin_lock_irqsave(&node->els_ios_lock, flags);
+
+ list_del(&els->list_entry);
+ /* Send list empty event if the IO allocator
+ * is disabled, and the list is empty
+ * If node->els_io_enabled was not checked,
+ * the event would be posted continually
+ */
+ send_empty_event = (!node->els_io_enabled &&
+ list_empty(&node->els_ios_list));
+
+ spin_unlock_irqrestore(&node->els_ios_lock, flags);
+
+ /* free ELS request and response buffers */
+ dma_free_coherent(&efc->pci->dev, els->io.rsp.size,
+ els->io.rsp.virt, els->io.rsp.phys);
+ dma_free_coherent(&efc->pci->dev, els->io.req.size,
+ els->io.req.virt, els->io.req.phys);
+
+ mempool_free(els, efc->els_io_pool);
+
+ if (send_empty_event)
+ efc_scsi_io_list_empty(node->efc, node);
+}
+
+static void
+efc_els_retry(struct efc_els_io_req *els);
+
+static void
+efc_els_delay_timer_cb(struct timer_list *t)
+{
+ struct efc_els_io_req *els = from_timer(els, t, delay_timer);
+
+ /* Retry delay timer expired, retry the ELS request */
+ efc_els_retry(els);
+}
+
+static int
+efc_els_req_cb(void *arg, u32 length, int status, u32 ext_status)
+{
+ struct efc_els_io_req *els;
+ struct efc_node *node;
+ struct efc *efc;
+ struct efc_node_cb cbdata;
+ u32 reason_code;
+
+ els = arg;
+ node = els->node;
+ efc = node->efc;
+
+ if (status)
+ els_io_printf(els, "status x%x ext x%x\n", status, ext_status);
+
+ /* set the response len element of els->rsp */
+ els->io.rsp.len = length;
+
+ cbdata.status = status;
+ cbdata.ext_status = ext_status;
+ cbdata.header = NULL;
+ cbdata.els_rsp = els->io.rsp;
+
+ /* set the response len element of els->rsp */
+ cbdata.rsp_len = length;
+
+ /* FW returns the number of bytes received on the link in
+ * the WCQE, not the amount placed in the buffer; use this info to
+ * check if there was an overrun.
+ */
+ if (length > els->io.rsp.size) {
+ efc_log_warn(efc,
+ "ELS response returned len=%d > buflen=%zu\n",
+ length, els->io.rsp.size);
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
+ return 0;
+ }
+
+ /* Post event to ELS IO object */
+ switch (status) {
+ case SLI4_FC_WCQE_STATUS_SUCCESS:
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_OK, &cbdata);
+ break;
+
+ case SLI4_FC_WCQE_STATUS_LS_RJT:
+ reason_code = (ext_status >> 16) & 0xff;
+
+ /* delay and retry if reason code is Logical Busy */
+ switch (reason_code) {
+ case ELS_RJT_BUSY:
+ els->node->els_req_cnt--;
+ els_io_printf(els,
+ "LS_RJT Logical Busy, delay and retry\n");
+ timer_setup(&els->delay_timer,
+ efc_els_delay_timer_cb, 0);
+ mod_timer(&els->delay_timer,
+ jiffies + msecs_to_jiffies(5000));
+ break;
+ default:
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_RJT,
+ &cbdata);
+ break;
+ }
+ break;
+
+ case SLI4_FC_WCQE_STATUS_LOCAL_REJECT:
+ switch (ext_status) {
+ case SLI4_FC_LOCAL_REJECT_SEQUENCE_TIMEOUT:
+ efc_els_retry(els);
+ break;
+ default:
+ efc_log_err(efc, "LOCAL_REJECT with ext status:%x\n",
+ ext_status);
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL,
+ &cbdata);
+ break;
+ }
+ break;
+ default: /* Other error */
+ efc_log_warn(efc, "els req failed status x%x, ext_status x%x\n",
+ status, ext_status);
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
+ break;
+ }
+
+ return 0;
+}
+
+void efc_disc_io_complete(struct efc_disc_io *io, u32 len, u32 status,
+ u32 ext_status)
+{
+ struct efc_els_io_req *els =
+ container_of(io, struct efc_els_io_req, io);
+
+ WARN_ON_ONCE(!els->cb);
+
+ ((efc_hw_srrs_cb_t)els->cb) (els, len, status, ext_status);
+}
+
+static int efc_els_send_req(struct efc_node *node, struct efc_els_io_req *els,
+ enum efc_disc_io_type io_type)
+{
+ int rc = 0;
+ struct efc *efc = node->efc;
+ struct efc_node_cb cbdata;
+
+ /* update ELS request counter */
+ els->node->els_req_cnt++;
+
+ /* Prepare the IO request details */
+ els->io.io_type = io_type;
+ els->io.xmit_len = els->io.req.size;
+ els->io.rsp_len = els->io.rsp.size;
+ els->io.rpi = node->rnode.indicator;
+ els->io.vpi = node->nport->indicator;
+ els->io.s_id = node->nport->fc_id;
+ els->io.d_id = node->rnode.fc_id;
+
+ if (node->rnode.attached)
+ els->io.rpi_registered = true;
+
+ els->cb = efc_els_req_cb;
+
+ rc = efc->tt.send_els(efc, &els->io);
+ if (!rc)
+ return rc;
+
+ cbdata.status = EFC_STATUS_INVALID;
+ cbdata.ext_status = EFC_STATUS_INVALID;
+ cbdata.els_rsp = els->io.rsp;
+ efc_log_err(efc, "efc_els_send failed: %d\n", rc);
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
+
+ return rc;
+}
+
+static void
+efc_els_retry(struct efc_els_io_req *els)
+{
+ struct efc *efc;
+ struct efc_node_cb cbdata;
+ u32 rc;
+
+ efc = els->node->efc;
+ cbdata.status = EFC_STATUS_INVALID;
+ cbdata.ext_status = EFC_STATUS_INVALID;
+ cbdata.els_rsp = els->io.rsp;
+
+ if (els->els_retries_remaining) {
+ els->els_retries_remaining--;
+ rc = efc->tt.send_els(efc, &els->io);
+ } else {
+ rc = -EIO;
+ }
+
+ if (rc) {
+ efc_log_err(efc, "ELS retries exhausted\n");
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
+ }
+}
+
+static int
+efc_els_acc_cb(void *arg, u32 length, int status, u32 ext_status)
+{
+ struct efc_els_io_req *els;
+ struct efc_node *node;
+ struct efc *efc;
+ struct efc_node_cb cbdata;
+
+ els = arg;
+ node = els->node;
+ efc = node->efc;
+
+ cbdata.status = status;
+ cbdata.ext_status = ext_status;
+ cbdata.header = NULL;
+ cbdata.els_rsp = els->io.rsp;
+
+ /* Post node event */
+ switch (status) {
+ case SLI4_FC_WCQE_STATUS_SUCCESS:
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_OK, &cbdata);
+ break;
+
+ default: /* Other error */
+ efc_log_warn(efc, "[%s] %-8s failed status x%x, ext x%x\n",
+ node->display_name, els->display_name,
+ status, ext_status);
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_FAIL, &cbdata);
+ break;
+ }
+
+ return 0;
+}
+
+static int
+efc_els_send_rsp(struct efc_els_io_req *els, u32 rsplen)
+{
+ int rc = 0;
+ struct efc_node_cb cbdata;
+ struct efc_node *node = els->node;
+ struct efc *efc = node->efc;
+
+ /* increment ELS completion counter */
+ node->els_cmpl_cnt++;
+
+ els->io.io_type = EFC_DISC_IO_ELS_RESP;
+ els->cb = efc_els_acc_cb;
+
+ /* Prepare the IO request details */
+ els->io.xmit_len = rsplen;
+ els->io.rsp_len = els->io.rsp.size;
+ els->io.rpi = node->rnode.indicator;
+ els->io.vpi = node->nport->indicator;
+ if (node->nport->fc_id != U32_MAX)
+ els->io.s_id = node->nport->fc_id;
+ else
+ els->io.s_id = els->io.iparam.els.s_id;
+ els->io.d_id = node->rnode.fc_id;
+
+ if (node->attached)
+ els->io.rpi_registered = true;
+
+ rc = efc->tt.send_els(efc, &els->io);
+ if (!rc)
+ return rc;
+
+ cbdata.status = EFC_STATUS_INVALID;
+ cbdata.ext_status = EFC_STATUS_INVALID;
+ cbdata.els_rsp = els->io.rsp;
+ efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_FAIL, &cbdata);
+
+ return rc;
+}
+
+int
+efc_send_plogi(struct efc_node *node)
+{
+ struct efc_els_io_req *els;
+ struct efc *efc = node->efc;
+ struct fc_els_flogi *plogi;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*plogi));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+ els->display_name = "plogi";
+
+ /* Build PLOGI request */
+ plogi = els->io.req.virt;
+
+ memcpy(plogi, node->nport->service_params, sizeof(*plogi));
+
+ plogi->fl_cmd = ELS_PLOGI;
+ memset(plogi->_fl_resvd, 0, sizeof(plogi->_fl_resvd));
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
+}
+
+int
+efc_send_flogi(struct efc_node *node)
+{
+ struct efc_els_io_req *els;
+ struct efc *efc;
+ struct fc_els_flogi *flogi;
+
+ efc = node->efc;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*flogi));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "flogi";
+
+ /* Build FLOGI request */
+ flogi = els->io.req.virt;
+
+ memcpy(flogi, node->nport->service_params, sizeof(*flogi));
+ flogi->fl_cmd = ELS_FLOGI;
+ memset(flogi->_fl_resvd, 0, sizeof(flogi->_fl_resvd));
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
+}
+
+int
+efc_send_fdisc(struct efc_node *node)
+{
+ struct efc_els_io_req *els;
+ struct efc *efc;
+ struct fc_els_flogi *fdisc;
+
+ efc = node->efc;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*fdisc));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "fdisc";
+
+ /* Build FDISC request */
+ fdisc = els->io.req.virt;
+
+ memcpy(fdisc, node->nport->service_params, sizeof(*fdisc));
+ fdisc->fl_cmd = ELS_FDISC;
+ memset(fdisc->_fl_resvd, 0, sizeof(fdisc->_fl_resvd));
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
+}
+
+int
+efc_send_prli(struct efc_node *node)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els;
+ struct {
+ struct fc_els_prli prli;
+ struct fc_els_spp spp;
+ } *pp;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*pp));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "prli";
+
+ /* Build PRLI request */
+ pp = els->io.req.virt;
+
+ memset(pp, 0, sizeof(*pp));
+
+ pp->prli.prli_cmd = ELS_PRLI;
+ pp->prli.prli_spp_len = 16;
+ pp->prli.prli_len = cpu_to_be16(sizeof(*pp));
+ pp->spp.spp_type = FC_TYPE_FCP;
+ pp->spp.spp_type_ext = 0;
+ pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
+ pp->spp.spp_params = cpu_to_be32(FCP_SPPF_RD_XRDY_DIS |
+ (node->nport->enable_ini ?
+ FCP_SPPF_INIT_FCN : 0) |
+ (node->nport->enable_tgt ?
+ FCP_SPPF_TARG_FCN : 0));
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
+}
+
+int
+efc_send_logo(struct efc_node *node)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els;
+ struct fc_els_logo *logo;
+ struct fc_els_flogi *sparams;
+
+ node_els_trace();
+
+ sparams = (struct fc_els_flogi *)node->nport->service_params;
+
+ els = efc_els_io_alloc(node, sizeof(*logo));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "logo";
+
+ /* Build LOGO request */
+
+ logo = els->io.req.virt;
+
+ memset(logo, 0, sizeof(*logo));
+ logo->fl_cmd = ELS_LOGO;
+ hton24(logo->fl_n_port_id, node->rnode.nport->fc_id);
+ logo->fl_n_port_wwn = sparams->fl_wwpn;
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
+}
+
+int
+efc_send_adisc(struct efc_node *node)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els;
+ struct fc_els_adisc *adisc;
+ struct fc_els_flogi *sparams;
+ struct efc_nport *nport = node->nport;
+
+ node_els_trace();
+
+ sparams = (struct fc_els_flogi *)node->nport->service_params;
+
+ els = efc_els_io_alloc(node, sizeof(*adisc));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "adisc";
+
+ /* Build ADISC request */
+
+ adisc = els->io.req.virt;
+
+ memset(adisc, 0, sizeof(*adisc));
+ adisc->adisc_cmd = ELS_ADISC;
+ hton24(adisc->adisc_hard_addr, nport->fc_id);
+ adisc->adisc_wwpn = sparams->fl_wwpn;
+ adisc->adisc_wwnn = sparams->fl_wwnn;
+ hton24(adisc->adisc_port_id, node->rnode.nport->fc_id);
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
+}
+
+int
+efc_send_scr(struct efc_node *node)
+{
+ struct efc_els_io_req *els;
+ struct efc *efc = node->efc;
+ struct fc_els_scr *req;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*req));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "scr";
+
+ req = els->io.req.virt;
+
+ memset(req, 0, sizeof(*req));
+ req->scr_cmd = ELS_SCR;
+ req->scr_reg_func = ELS_SCRF_FULL;
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
+}
+
+int
+efc_send_ls_rjt(struct efc_node *node, u32 ox_id, u32 reason_code,
+ u32 reason_code_expl, u32 vendor_unique)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els = NULL;
+ struct fc_els_ls_rjt *rjt;
+
+ els = efc_els_io_alloc(node, sizeof(*rjt));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ node_els_trace();
+
+ els->display_name = "ls_rjt";
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+
+ rjt = els->io.req.virt;
+ memset(rjt, 0, sizeof(*rjt));
+
+ rjt->er_cmd = ELS_LS_RJT;
+ rjt->er_reason = reason_code;
+ rjt->er_explan = reason_code_expl;
+
+ return efc_els_send_rsp(els, sizeof(*rjt));
+}
+
+int
+efc_send_plogi_acc(struct efc_node *node, u32 ox_id)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els = NULL;
+ struct fc_els_flogi *plogi;
+ struct fc_els_flogi *req = (struct fc_els_flogi *)node->service_params;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*plogi));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "plogi_acc";
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+
+ plogi = els->io.req.virt;
+
+ /* copy our port's service parameters to payload */
+ memcpy(plogi, node->nport->service_params, sizeof(*plogi));
+ plogi->fl_cmd = ELS_LS_ACC;
+ memset(plogi->_fl_resvd, 0, sizeof(plogi->_fl_resvd));
+
+ /* Set Application header support bit if requested */
+ if (req->fl_csp.sp_features & cpu_to_be16(FC_SP_FT_BCAST))
+ plogi->fl_csp.sp_features |= cpu_to_be16(FC_SP_FT_BCAST);
+
+ return efc_els_send_rsp(els, sizeof(*plogi));
+}
+
+int
+efc_send_flogi_p2p_acc(struct efc_node *node, u32 ox_id, u32 s_id)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els = NULL;
+ struct fc_els_flogi *flogi;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*flogi));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "flogi_p2p_acc";
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+ els->io.iparam.els.s_id = s_id;
+
+ flogi = els->io.req.virt;
+
+ /* copy our port's service parameters to payload */
+ memcpy(flogi, node->nport->service_params, sizeof(*flogi));
+ flogi->fl_cmd = ELS_LS_ACC;
+ memset(flogi->_fl_resvd, 0, sizeof(flogi->_fl_resvd));
+
+ memset(flogi->fl_cssp, 0, sizeof(flogi->fl_cssp));
+
+ return efc_els_send_rsp(els, sizeof(*flogi));
+}
+
+int
+efc_send_prli_acc(struct efc_node *node, u32 ox_id)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els = NULL;
+ struct {
+ struct fc_els_prli prli;
+ struct fc_els_spp spp;
+ } *pp;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*pp));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "prli_acc";
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+
+ pp = els->io.req.virt;
+ memset(pp, 0, sizeof(*pp));
+
+ pp->prli.prli_cmd = ELS_LS_ACC;
+ pp->prli.prli_spp_len = 0x10;
+ pp->prli.prli_len = cpu_to_be16(sizeof(*pp));
+ pp->spp.spp_type = FC_TYPE_FCP;
+ pp->spp.spp_type_ext = 0;
+ pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR | FC_SPP_RESP_ACK;
+
+ pp->spp.spp_params = cpu_to_be32(FCP_SPPF_RD_XRDY_DIS |
+ (node->nport->enable_ini ?
+ FCP_SPPF_INIT_FCN : 0) |
+ (node->nport->enable_tgt ?
+ FCP_SPPF_TARG_FCN : 0));
+
+ return efc_els_send_rsp(els, sizeof(*pp));
+}
+
+int
+efc_send_prlo_acc(struct efc_node *node, u32 ox_id)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els = NULL;
+ struct {
+ struct fc_els_prlo prlo;
+ struct fc_els_spp spp;
+ } *pp;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*pp));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "prlo_acc";
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+
+ pp = els->io.req.virt;
+ memset(pp, 0, sizeof(*pp));
+ pp->prlo.prlo_cmd = ELS_LS_ACC;
+ pp->prlo.prlo_obs = 0x10;
+ pp->prlo.prlo_len = cpu_to_be16(sizeof(*pp));
+
+ pp->spp.spp_type = FC_TYPE_FCP;
+ pp->spp.spp_type_ext = 0;
+ pp->spp.spp_flags = FC_SPP_RESP_ACK;
+
+ return efc_els_send_rsp(els, sizeof(*pp));
+}
+
+int
+efc_send_ls_acc(struct efc_node *node, u32 ox_id)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els = NULL;
+ struct fc_els_ls_acc *acc;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*acc));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "ls_acc";
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+
+ acc = els->io.req.virt;
+ memset(acc, 0, sizeof(*acc));
+
+ acc->la_cmd = ELS_LS_ACC;
+
+ return efc_els_send_rsp(els, sizeof(*acc));
+}
+
+int
+efc_send_logo_acc(struct efc_node *node, u32 ox_id)
+{
+ struct efc_els_io_req *els = NULL;
+ struct efc *efc = node->efc;
+ struct fc_els_ls_acc *logo;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*logo));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "logo_acc";
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+
+ logo = els->io.req.virt;
+ memset(logo, 0, sizeof(*logo));
+
+ logo->la_cmd = ELS_LS_ACC;
+
+ return efc_els_send_rsp(els, sizeof(*logo));
+}
+
+int
+efc_send_adisc_acc(struct efc_node *node, u32 ox_id)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els = NULL;
+ struct fc_els_adisc *adisc;
+ struct fc_els_flogi *sparams;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*adisc));
+ if (!els) {
+ efc_log_err(efc, "els IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->display_name = "adisc_acc";
+
+ /* Go ahead and send the ELS_ACC */
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+ els->io.iparam.els.ox_id = ox_id;
+
+ sparams = (struct fc_els_flogi *)node->nport->service_params;
+ adisc = els->io.req.virt;
+ memset(adisc, 0, sizeof(*adisc));
+ adisc->adisc_cmd = ELS_LS_ACC;
+ adisc->adisc_wwpn = sparams->fl_wwpn;
+ adisc->adisc_wwnn = sparams->fl_wwnn;
+ hton24(adisc->adisc_port_id, node->rnode.nport->fc_id);
+
+ return efc_els_send_rsp(els, sizeof(*adisc));
+}
+
+static inline void
+fcct_build_req_header(struct fc_ct_hdr *hdr, u16 cmd, u16 max_size)
+{
+ hdr->ct_rev = FC_CT_REV;
+ hdr->ct_fs_type = FC_FST_DIR;
+ hdr->ct_fs_subtype = FC_NS_SUBTYPE;
+ hdr->ct_options = 0;
+ hdr->ct_cmd = cpu_to_be16(cmd);
+ /* words */
+ hdr->ct_mr_size = cpu_to_be16(max_size / (sizeof(u32)));
+ hdr->ct_reason = 0;
+ hdr->ct_explan = 0;
+ hdr->ct_vendor = 0;
+}
+
+int
+efc_ns_send_rftid(struct efc_node *node)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els;
+ struct {
+ struct fc_ct_hdr hdr;
+ struct fc_ns_rft_id rftid;
+ } *ct;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*ct));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ;
+ els->io.iparam.ct.type = FC_TYPE_CT;
+ els->io.iparam.ct.df_ctl = 0;
+ els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT;
+
+ els->display_name = "rftid";
+
+ ct = els->io.req.virt;
+ memset(ct, 0, sizeof(*ct));
+ fcct_build_req_header(&ct->hdr, FC_NS_RFT_ID,
+ sizeof(struct fc_ns_rft_id));
+
+ hton24(ct->rftid.fr_fid.fp_fid, node->rnode.nport->fc_id);
+ ct->rftid.fr_fts.ff_type_map[FC_TYPE_FCP / FC_NS_BPW] =
+ cpu_to_be32(1 << (FC_TYPE_FCP % FC_NS_BPW));
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ);
+}
+
+int
+efc_ns_send_rffid(struct efc_node *node)
+{
+ struct efc *efc = node->efc;
+ struct efc_els_io_req *els;
+ struct {
+ struct fc_ct_hdr hdr;
+ struct fc_ns_rff_id rffid;
+ } *ct;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc(node, sizeof(*ct));
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ;
+ els->io.iparam.ct.type = FC_TYPE_CT;
+ els->io.iparam.ct.df_ctl = 0;
+ els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT;
+
+ els->display_name = "rffid";
+ ct = els->io.req.virt;
+
+ memset(ct, 0, sizeof(*ct));
+ fcct_build_req_header(&ct->hdr, FC_NS_RFF_ID,
+ sizeof(struct fc_ns_rff_id));
+
+ hton24(ct->rffid.fr_fid.fp_fid, node->rnode.nport->fc_id);
+ if (node->nport->enable_ini)
+ ct->rffid.fr_feat |= FCP_FEAT_INIT;
+ if (node->nport->enable_tgt)
+ ct->rffid.fr_feat |= FCP_FEAT_TARG;
+ ct->rffid.fr_type = FC_TYPE_FCP;
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ);
+}
+
+int
+efc_ns_send_gidpt(struct efc_node *node)
+{
+ struct efc_els_io_req *els = NULL;
+ struct efc *efc = node->efc;
+ struct {
+ struct fc_ct_hdr hdr;
+ struct fc_ns_gid_pt gidpt;
+ } *ct;
+
+ node_els_trace();
+
+ els = efc_els_io_alloc_size(node, sizeof(*ct), EFC_ELS_GID_PT_RSP_LEN);
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ;
+ els->io.iparam.ct.type = FC_TYPE_CT;
+ els->io.iparam.ct.df_ctl = 0;
+ els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT;
+
+ els->display_name = "gidpt";
+
+ ct = els->io.req.virt;
+
+ memset(ct, 0, sizeof(*ct));
+ fcct_build_req_header(&ct->hdr, FC_NS_GID_PT,
+ sizeof(struct fc_ns_gid_pt));
+
+ ct->gidpt.fn_pt_type = FC_TYPE_FCP;
+
+ return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ);
+}
+
+void
+efc_els_io_cleanup(struct efc_els_io_req *els, int evt, void *arg)
+{
+ /* don't want further events that could come; e.g. abort requests
+ * from the node state machine; thus, disable state machine
+ */
+ els->els_req_free = true;
+ efc_node_post_els_resp(els->node, evt, arg);
+
+ efc_els_io_free(els);
+}
+
+static int
+efc_ct_acc_cb(void *arg, u32 length, int status, u32 ext_status)
+{
+ struct efc_els_io_req *els = arg;
+
+ efc_els_io_free(els);
+
+ return 0;
+}
+
+int
+efc_send_ct_rsp(struct efc *efc, struct efc_node *node, u16 ox_id,
+ struct fc_ct_hdr *ct_hdr, u32 cmd_rsp_code,
+ u32 reason_code, u32 reason_code_explanation)
+{
+ struct efc_els_io_req *els = NULL;
+ struct fc_ct_hdr *rsp = NULL;
+
+ els = efc_els_io_alloc(node, 256);
+ if (!els) {
+ efc_log_err(efc, "IO alloc failed\n");
+ return -EIO;
+ }
+
+ rsp = els->io.rsp.virt;
+
+ *rsp = *ct_hdr;
+
+ fcct_build_req_header(rsp, cmd_rsp_code, 0);
+ rsp->ct_reason = reason_code;
+ rsp->ct_explan = reason_code_explanation;
+
+ els->display_name = "ct_rsp";
+ els->cb = efc_ct_acc_cb;
+
+ /* Prepare the IO request details */
+ els->io.io_type = EFC_DISC_IO_CT_RESP;
+ els->io.xmit_len = sizeof(*rsp);
+
+ els->io.rpi = node->rnode.indicator;
+ els->io.d_id = node->rnode.fc_id;
+
+ memset(&els->io.iparam, 0, sizeof(els->io.iparam));
+
+ els->io.iparam.ct.ox_id = ox_id;
+ els->io.iparam.ct.r_ctl = 3;
+ els->io.iparam.ct.type = FC_TYPE_CT;
+ els->io.iparam.ct.df_ctl = 0;
+ els->io.iparam.ct.timeout = 5;
+
+ if (efc->tt.send_els(efc, &els->io)) {
+ efc_els_io_free(els);
+ return -EIO;
+ }
+ return 0;
+}
+
+int
+efc_send_bls_acc(struct efc_node *node, struct fc_frame_header *hdr)
+{
+ struct sli_bls_params bls;
+ struct fc_ba_acc *acc;
+ struct efc *efc = node->efc;
+
+ memset(&bls, 0, sizeof(bls));
+ bls.ox_id = be16_to_cpu(hdr->fh_ox_id);
+ bls.rx_id = be16_to_cpu(hdr->fh_rx_id);
+ bls.s_id = ntoh24(hdr->fh_d_id);
+ bls.d_id = node->rnode.fc_id;
+ bls.rpi = node->rnode.indicator;
+ bls.vpi = node->nport->indicator;
+
+ acc = (void *)bls.payload;
+ acc->ba_ox_id = cpu_to_be16(bls.ox_id);
+ acc->ba_rx_id = cpu_to_be16(bls.rx_id);
+ acc->ba_high_seq_cnt = cpu_to_be16(U16_MAX);
+
+ return efc->tt.send_bls(efc, FC_RCTL_BA_ACC, &bls);
+}
new file mode 100644
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+#ifndef __EFC_ELS_H__
+#define __EFC_ELS_H__
+
+#define EFC_STATUS_INVALID INT_MAX
+#define EFC_ELS_IO_POOL_SZ 1024
+
+struct efc_els_io_req {
+ struct list_head list_entry;
+ struct kref ref;
+ void (*release)(struct kref *arg);
+ struct efc_node *node;
+ void *cb;
+ u32 els_retries_remaining;
+ bool els_req_free;
+ struct timer_list delay_timer;
+
+ const char *display_name;
+
+ struct efc_disc_io io;
+};
+
+typedef int(*efc_hw_srrs_cb_t)(void *arg, u32 length, int status,
+ u32 ext_status);
+
+void _efc_els_io_free(struct kref *arg);
+struct efc_els_io_req *
+efc_els_io_alloc(struct efc_node *node, u32 reqlen);
+struct efc_els_io_req *
+efc_els_io_alloc_size(struct efc_node *node, u32 reqlen, u32 rsplen);
+void efc_els_io_free(struct efc_els_io_req *els);
+
+/* ELS command send */
+typedef void (*els_cb_t)(struct efc_node *node,
+ struct efc_node_cb *cbdata, void *arg);
+int
+efc_send_plogi(struct efc_node *node);
+int
+efc_send_flogi(struct efc_node *node);
+int
+efc_send_fdisc(struct efc_node *node);
+int
+efc_send_prli(struct efc_node *node);
+int
+efc_send_prlo(struct efc_node *node);
+int
+efc_send_logo(struct efc_node *node);
+int
+efc_send_adisc(struct efc_node *node);
+int
+efc_send_pdisc(struct efc_node *node);
+int
+efc_send_scr(struct efc_node *node);
+int
+efc_ns_send_rftid(struct efc_node *node);
+int
+efc_ns_send_rffid(struct efc_node *node);
+int
+efc_ns_send_gidpt(struct efc_node *node);
+void
+efc_els_io_cleanup(struct efc_els_io_req *els, int evt, void *arg);
+
+/* ELS acc send */
+int
+efc_send_ls_acc(struct efc_node *node, u32 ox_id);
+int
+efc_send_ls_rjt(struct efc_node *node, u32 ox_id, u32 reason_cod,
+ u32 reason_code_expl, u32 vendor_unique);
+int
+efc_send_flogi_p2p_acc(struct efc_node *node, u32 ox_id, u32 s_id);
+int
+efc_send_flogi_acc(struct efc_node *node, u32 ox_id, u32 is_fport);
+int
+efc_send_plogi_acc(struct efc_node *node, u32 ox_id);
+int
+efc_send_prli_acc(struct efc_node *node, u32 ox_id);
+int
+efc_send_logo_acc(struct efc_node *node, u32 ox_id);
+int
+efc_send_prlo_acc(struct efc_node *node, u32 ox_id);
+int
+efc_send_adisc_acc(struct efc_node *node, u32 ox_id);
+
+int
+efc_bls_send_acc_hdr(struct efc *efc, struct efc_node *node,
+ struct fc_frame_header *hdr);
+int
+efc_bls_send_rjt_hdr(struct efc_els_io_req *io, struct fc_frame_header *hdr);
+
+int
+efc_els_io_list_empty(struct efc_node *node, struct list_head *list);
+
+/* CT */
+int
+efc_send_ct_rsp(struct efc *efc, struct efc_node *node, u16 ox_id,
+ struct fc_ct_hdr *ct_hdr, u32 cmd_rsp_code, u32 reason_code,
+ u32 reason_code_explanation);
+
+int
+efc_send_bls_acc(struct efc_node *node, struct fc_frame_header *hdr);
+
+#endif /* __EFC_ELS_H__ */