This patch continues the libefc library population.
This patch adds library interface definitions for:
-Registrations for VFI, VPI and RPI.
Co-developed-by: Ram Vegesna <ram.vegesna@xxxxxxxxxxxx>
Signed-off-by: Ram Vegesna <ram.vegesna@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
v5:
EFC_EVT_XXX name changes.
---
drivers/scsi/elx/libefc/efc_cmds.c | 877 +++++++++++++++++++++++++++++
drivers/scsi/elx/libefc/efc_cmds.h | 35 ++
2 files changed, 912 insertions(+)
create mode 100644 drivers/scsi/elx/libefc/efc_cmds.c
create mode 100644 drivers/scsi/elx/libefc/efc_cmds.h
diff --git a/drivers/scsi/elx/libefc/efc_cmds.c b/drivers/scsi/elx/libefc/efc_cmds.c
new file mode 100644
index 000000000000..a1cca840cf63
--- /dev/null
+++ b/drivers/scsi/elx/libefc/efc_cmds.c
@@ -0,0 +1,877 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+#include "efclib.h"
+#include "../libefc_sli/sli4.h"
+#include "efc_cmds.h"
+#include "efc_sm.h"
+
+static void
+efc_nport_free_resources(struct efc_nport *nport, int evt, void *data)
+{
+ struct efc *efc = nport->efc;
+
+ /* Clear the nport attached flag */
+ nport->attached = false;
+
+ /* Free the service parameters buffer */
+ if (nport->dma.virt) {
+ dma_free_coherent(&efc->pci->dev, nport->dma.size,
+ nport->dma.virt, nport->dma.phys);
+ memset(&nport->dma, 0, sizeof(struct efc_dma));
+ }
+
+ /* Free the SLI resources */
+ sli_resource_free(efc->sli, SLI4_RSRC_VPI, nport->indicator);
+
+ efc_nport_cb(efc, evt, nport);
+}
+
+static int
+efc_nport_get_mbox_status(struct efc_nport *nport, u8 *mqe, int status)
+{
+ struct efc *efc = nport->efc;
+ struct sli4_mbox_command_header *hdr =
+ (struct sli4_mbox_command_header *)mqe;
+ int rc = 0;
+
+ if (status || le16_to_cpu(hdr->status)) {
+ efc_log_debug(efc, "bad status vpi=%#x st=%x hdr=%x\n",
+ nport->indicator, status, le16_to_cpu(hdr->status));
+ rc = -1;
+ }
+
+ return rc;
+}
+
+static int
+efc_nport_free_unreg_vpi_cb(struct efc *efc, int status, u8 *mqe, void *arg)
+{
+ struct efc_nport *nport = arg;
+ int evt = EFC_EVT_NPORT_FREE_OK;
+ int rc = 0;
+
+ rc = efc_nport_get_mbox_status(nport, mqe, status);
+ if (rc) {
+ evt = EFC_EVT_NPORT_FREE_FAIL;
+ rc = -1;
+ }
+
+ efc_nport_free_resources(nport, evt, mqe);
+ return rc;
+}
+
+static void
+efc_nport_free_unreg_vpi(struct efc_nport *nport)
+{
+ struct efc *efc = nport->efc;
+ int rc;
+ u8 data[SLI4_BMBX_SIZE];
+
+ rc = sli_cmd_unreg_vpi(efc->sli, data, nport->indicator,
+ SLI4_UNREG_TYPE_PORT);
+ if (rc) {
+ efc_log_err(efc, "UNREG_VPI format failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_FREE_FAIL, data);
+ return;
+ }
+
+ rc = efc->tt.issue_mbox_rqst(efc->base, data,
+ efc_nport_free_unreg_vpi_cb, nport);
+ if (rc) {
+ efc_log_err(efc, "UNREG_VPI command failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_FREE_FAIL, data);
+ }
+}
+
+static void
+efc_nport_send_evt(struct efc_nport *nport, int evt, void *data)
+{
+ struct efc *efc = nport->efc;
+
+ /* Now inform the registered callbacks */
+ efc_nport_cb(efc, evt, nport);
+
+ /* Set the nport attached flag */
+ if (evt == EFC_EVT_NPORT_ATTACH_OK)
+ nport->attached = true;
+
+ /* If there is a pending free request, then handle it now */
+ if (nport->free_req_pending)
+ efc_nport_free_unreg_vpi(nport);
+}
+
+static int
+efc_nport_alloc_init_vpi_cb(struct efc *efc, int status, u8 *mqe, void *arg)
+{
+ struct efc_nport *nport = arg;
+ int rc;
+
+ rc = efc_nport_get_mbox_status(nport, mqe, status);
+ if (rc) {
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ALLOC_FAIL, mqe);
+ return EFC_FAIL;
+ }
+
+ efc_nport_send_evt(nport, EFC_EVT_NPORT_ALLOC_OK, mqe);
+ return EFC_SUCCESS;
+}
+
+static void
+efc_nport_alloc_init_vpi(struct efc_nport *nport)
+{
+ struct efc *efc = nport->efc;
+ u8 data[SLI4_BMBX_SIZE];
+ int rc;
+
+ /* If there is a pending free request, then handle it now */
+ if (nport->free_req_pending) {
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_FREE_OK, data);
+ return;
+ }
+
+ rc = sli_cmd_init_vpi(efc->sli, data,
+ nport->indicator, nport->domain->indicator);
+ if (rc) {
+ efc_log_err(efc, "INIT_VPI format failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ALLOC_FAIL, data);
+ return;
+ }
+
+ rc = efc->tt.issue_mbox_rqst(efc->base, data,
+ efc_nport_alloc_init_vpi_cb, nport);
+ if (rc) {
+ efc_log_err(efc, "INIT_VPI command failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ALLOC_FAIL, data);
+ }
+}
+
+static int
+efc_nport_alloc_read_sparm64_cb(struct efc *efc, int status, u8 *mqe, void *arg)
+{
+ struct efc_nport *nport = arg;
+ u8 *payload = NULL;
+ int rc;
+
+ rc = efc_nport_get_mbox_status(nport, mqe, status);
+ if (rc) {
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ALLOC_FAIL, mqe);
+ return EFC_FAIL;
+ }
+
+ payload = nport->dma.virt;
+
+ memcpy(&nport->sli_wwpn, payload + SLI4_READ_SPARM64_WWPN_OFFSET,
+ sizeof(nport->sli_wwpn));
+ memcpy(&nport->sli_wwnn, payload + SLI4_READ_SPARM64_WWNN_OFFSET,
+ sizeof(nport->sli_wwnn));
+
+ dma_free_coherent(&efc->pci->dev, nport->dma.size, nport->dma.virt,
+ nport->dma.phys);
+ memset(&nport->dma, 0, sizeof(struct efc_dma));
+ efc_nport_alloc_init_vpi(nport);
+ return EFC_SUCCESS;
+}
+
+static void
+efc_nport_alloc_read_sparm64(struct efc *efc, struct efc_nport *nport)
+{
+ u8 data[SLI4_BMBX_SIZE];
+ int rc;
+
+ /* Allocate memory for the service parameters */
+ nport->dma.size = EFC_SPARAM_DMA_SZ;
+ nport->dma.virt = dma_alloc_coherent(&efc->pci->dev,
+ nport->dma.size, &nport->dma.phys,
+ GFP_DMA);
+ if (!nport->dma.virt) {
+ efc_log_err(efc, "Failed to allocate DMA memory\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ALLOC_FAIL, data);
+ return;
+ }
+
+ rc = sli_cmd_read_sparm64(efc->sli, data,
+ &nport->dma, nport->indicator);
+ if (rc) {
+ efc_log_err(efc, "READ_SPARM64 format failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ALLOC_FAIL, data);
+ return;
+ }
+
+ rc = efc->tt.issue_mbox_rqst(efc->base, data,
+ efc_nport_alloc_read_sparm64_cb, nport);
+ if (rc) {
+ efc_log_err(efc, "READ_SPARM64 command failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ALLOC_FAIL, data);
+ }
+}
+
+int
+efc_cmd_nport_alloc(struct efc *efc, struct efc_nport *nport,
+ struct efc_domain *domain, u8 *wwpn)
+{
+ u32 rc = EFC_SUCCESS;
+ u32 index;
+
+ nport->indicator = U32_MAX;
+ nport->free_req_pending = false;
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc, "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ if (wwpn)
+ memcpy(&nport->sli_wwpn, wwpn, sizeof(nport->sli_wwpn));
+
+ /*
+ * allocate a VPI object for the port and stores it in the
+ * indicator field of the port object.
+ */
+ if (sli_resource_alloc(efc->sli, SLI4_RSRC_VPI,
+ &nport->indicator, &index)) {
+ efc_log_err(efc, "VPI allocation failure\n");
+ return EFC_FAIL;
+ }
+
+ if (domain) {
+ /*
+ * If the WWPN is NULL, fetch the default
+ * WWPN and WWNN before initializing the VPI
+ */
+ if (!wwpn)
+ efc_nport_alloc_read_sparm64(efc, nport);
+ else
+ efc_nport_alloc_init_vpi(nport);
+ } else if (!wwpn) {
+ /* This is the convention for the HW, not SLI */
+ efc_log_err(efc, "need WWN for physical port\n");
+ rc = EFC_FAIL;
+ }
+
+ /* domain NULL and wwpn non-NULL */
+ if (rc)
+ sli_resource_free(efc->sli, SLI4_RSRC_VPI, nport->indicator);
+
+ return rc;
+}
+
+static int
+efc_nport_attach_reg_vpi_cb(struct efc *efc, int status, u8 *mqe,
+ void *arg)
+{
+ struct efc_nport *nport = arg;
+ int rc;
+
+ rc = efc_nport_get_mbox_status(nport, mqe, status);
+ if (rc) {
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ATTACH_FAIL, mqe);
+ return EFC_FAIL;
+ }
+
+ efc_nport_send_evt(nport, EFC_EVT_NPORT_ATTACH_OK, mqe);
+ return EFC_SUCCESS;
+}
+
+int
+efc_cmd_nport_attach(struct efc *efc, struct efc_nport *nport, u32 fc_id)
+{
+ u8 buf[SLI4_BMBX_SIZE];
+ int rc = EFC_SUCCESS;
+
+ if (!nport) {
+ efc_log_err(efc, "bad param(s) nport=%p\n", nport);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc,
+ "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ nport->fc_id = fc_id;
+
+ /* register previously-allocated VPI with the device */
+ rc = sli_cmd_reg_vpi(efc->sli, buf, nport->fc_id,
+ nport->sli_wwpn, nport->indicator,
+ nport->domain->indicator, false);
+ if (rc) {
+ efc_log_err(efc, "REG_VPI format failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ATTACH_FAIL, buf);
+ return rc;
+ }
+
+ rc = efc->tt.issue_mbox_rqst(efc->base, buf,
+ efc_nport_attach_reg_vpi_cb, nport);
+ if (rc) {
+ efc_log_err(efc, "REG_VPI command failure\n");
+ efc_nport_free_resources(nport, EFC_EVT_NPORT_ATTACH_FAIL, buf);
+ }
+
+ return rc;
+}
+
+int
+efc_cmd_nport_free(struct efc *efc, struct efc_nport *nport)
+{
+ if (!nport) {
+ efc_log_err(efc, "bad parameter(s) nport=%p\n", nport);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc,
+ "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ /* Issue the UNREG_VPI command to free the assigned VPI context */
+ if (nport->attached)
+ efc_nport_free_unreg_vpi(nport);
+ else
+ nport->free_req_pending = true;
+
+ return EFC_SUCCESS;
+}
+
+static int
+efc_domain_get_mbox_status(struct efc_domain *domain, u8 *mqe, int status)
+{
+ struct efc *efc = domain->efc;
+ struct sli4_mbox_command_header *hdr =
+ (struct sli4_mbox_command_header *)mqe;
+ int rc = 0;
+
+ if (status || le16_to_cpu(hdr->status)) {
+ efc_log_debug(efc, "bad status vfi=%#x st=%x hdr=%x\n",
+ domain->indicator, status,
+ le16_to_cpu(hdr->status));
+ rc = -1;
+ }
+
+ return rc;
+}
+
+static void
+efc_domain_free_resources(struct efc_domain *domain, int evt, void *data)
+{
+ struct efc *efc = domain->efc;
+
+ /* Free the service parameters buffer */
+ if (domain->dma.virt) {
+ dma_free_coherent(&efc->pci->dev,
+ domain->dma.size, domain->dma.virt,
+ domain->dma.phys);
+ memset(&domain->dma, 0, sizeof(struct efc_dma));
+ }
+
+ /* Free the SLI resources */
+ sli_resource_free(efc->sli, SLI4_RSRC_VFI, domain->indicator);
+
+ efc_domain_cb(efc, evt, domain);
+}
+
+static void
+efc_domain_send_nport_evt(struct efc_domain *domain,
+ int port_evt, int domain_evt, void *data)
+{
+ struct efc *efc = domain->efc;
+
+ /* Send alloc/attach ok to the physical nport */
+ efc_nport_send_evt(domain->nport, port_evt, NULL);
+
+ /* Now inform the registered callbacks */
+ efc_domain_cb(efc, domain_evt, domain);
+}
+
+static int
+efc_domain_alloc_read_sparm64_cb(struct efc *efc, int status, u8 *mqe,
+ void *arg)
+{
+ struct efc_domain *domain = arg;
+ int rc;
+
+ rc = efc_domain_get_mbox_status(domain, mqe, status);
+ if (rc) {
+ efc_domain_free_resources(domain,
+ EFC_HW_DOMAIN_ALLOC_FAIL, mqe);
+ return EFC_FAIL;
+ }
+
+ efc_domain_send_nport_evt(domain, EFC_EVT_NPORT_ALLOC_OK,
+ EFC_HW_DOMAIN_ALLOC_OK, mqe);
+ return EFC_SUCCESS;
+}
+
+static void
+efc_domain_alloc_read_sparm64(struct efc_domain *domain)
+{
+ struct efc *efc = domain->efc;
+ u8 data[SLI4_BMBX_SIZE];
+ int rc;
+
+ rc = sli_cmd_read_sparm64(efc->sli, data, &domain->dma, 0);
+ if (rc) {
+ efc_log_err(efc, "READ_SPARM64 format failure\n");
+ efc_domain_free_resources(domain,
+ EFC_HW_DOMAIN_ALLOC_FAIL, data);
+ return;
+ }
+
+ rc = efc->tt.issue_mbox_rqst(efc->base, data,
+ efc_domain_alloc_read_sparm64_cb, domain);
+ if (rc) {
+ efc_log_err(efc, "READ_SPARM64 command failure\n");
+ efc_domain_free_resources(domain,
+ EFC_HW_DOMAIN_ALLOC_FAIL, data);
+ }
+}
+
+static int
+efc_domain_alloc_init_vfi_cb(struct efc *efc, int status, u8 *mqe,
+ void *arg)
+{
+ struct efc_domain *domain = arg;
+ int rc;
+
+ rc = efc_domain_get_mbox_status(domain, mqe, status);
+ if (rc) {
+ efc_domain_free_resources(domain,
+ EFC_HW_DOMAIN_ALLOC_FAIL, mqe);
+ return EFC_FAIL;
+ }
+
+ efc_domain_alloc_read_sparm64(domain);
+ return EFC_SUCCESS;
+}
+
+static void
+efc_domain_alloc_init_vfi(struct efc_domain *domain)
+{
+ struct efc *efc = domain->efc;
+ struct efc_nport *nport = domain->nport;
+ u8 data[SLI4_BMBX_SIZE];
+ int rc;
+
+ /*
+ * For FC, the HW alread registered an FCFI.
+ * Copy FCF information into the domain and jump to INIT_VFI.
+ */
+ domain->fcf_indicator = efc->fcfi;
+ rc = sli_cmd_init_vfi(efc->sli, data, domain->indicator,
+ domain->fcf_indicator, nport->indicator);
+ if (rc) {
+ efc_log_err(efc, "INIT_VFI format failure\n");
+ efc_domain_free_resources(domain,
+ EFC_HW_DOMAIN_ALLOC_FAIL, data);
+ return;
+ }
+
+ efc_log_err(efc, "%s issue mbox\n", __func__);
+ rc = efc->tt.issue_mbox_rqst(efc->base, data,
+ efc_domain_alloc_init_vfi_cb, domain);
+ if (rc) {
+ efc_log_err(efc, "INIT_VFI command failure\n");
+ efc_domain_free_resources(domain,
+ EFC_HW_DOMAIN_ALLOC_FAIL, data);
+ }
+}
+
+int
+efc_cmd_domain_alloc(struct efc *efc, struct efc_domain *domain, u32 fcf)
+{
+ u32 index;
+
+ if (!domain || !domain->nport) {
+ efc_log_err(efc, "bad parameter(s) domain=%p nport=%p\n",
+ domain, domain ? domain->nport : NULL);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc,
+ "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ /* allocate memory for the service parameters */
+ domain->dma.size = EFC_SPARAM_DMA_SZ;
+ domain->dma.virt = dma_alloc_coherent(&efc->pci->dev,
+ domain->dma.size,
+ &domain->dma.phys, GFP_DMA);
+ if (!domain->dma.virt) {
+ efc_log_err(efc, "Failed to allocate DMA memory\n");
+ return EFC_FAIL;
+ }
+
+ domain->fcf = fcf;
+ domain->fcf_indicator = U32_MAX;
+ domain->indicator = U32_MAX;
+
+ if (sli_resource_alloc(efc->sli, SLI4_RSRC_VFI, &domain->indicator,
+ &index)) {
+ efc_log_err(efc, "VFI allocation failure\n");
+
+ dma_free_coherent(&efc->pci->dev,
+ domain->dma.size, domain->dma.virt,
+ domain->dma.phys);
+ memset(&domain->dma, 0, sizeof(struct efc_dma));
+
+ return EFC_FAIL;
+ }
+
+ efc_domain_alloc_init_vfi(domain);
+ return EFC_SUCCESS;
+}
+
+static int
+efc_domain_attach_reg_vfi_cb(struct efc *efc, int status, u8 *mqe,
+ void *arg)
+{
+ struct efc_domain *domain = arg;
+ int rc;
+
+ rc = efc_domain_get_mbox_status(domain, mqe, status);
+ if (rc) {
+ efc_domain_free_resources(domain,
+ EFC_HW_DOMAIN_ATTACH_FAIL, mqe);
+ return EFC_FAIL;
+ }
+
+ efc_domain_send_nport_evt(domain, EFC_EVT_NPORT_ATTACH_OK,
+ EFC_HW_DOMAIN_ATTACH_OK, mqe);
+ return EFC_SUCCESS;
+}
+
+int
+efc_cmd_domain_attach(struct efc *efc, struct efc_domain *domain, u32 fc_id)
+{
+ u8 buf[SLI4_BMBX_SIZE];
+ int rc = EFC_SUCCESS;
+
+ if (!domain) {
+ efc_log_err(efc, "bad param(s) domain=%p\n", domain);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc,
+ "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ domain->nport->fc_id = fc_id;
+
+ rc = sli_cmd_reg_vfi(efc->sli, buf, SLI4_BMBX_SIZE, domain->indicator,
+ domain->fcf_indicator, domain->dma,
+ domain->nport->indicator, domain->nport->sli_wwpn,
+ domain->nport->fc_id);
+ if (rc) {
+ efc_log_err(efc, "REG_VFI format failure\n");
+ goto cleanup;
+ }
+
+ rc = efc->tt.issue_mbox_rqst(efc->base, buf,
+ efc_domain_attach_reg_vfi_cb, domain);
+ if (rc) {
+ efc_log_err(efc, "REG_VFI command failure\n");
+ goto cleanup;
+ }
+
+ return rc;
+
+cleanup:
+ efc_domain_free_resources(domain, EFC_HW_DOMAIN_ATTACH_FAIL, buf);
+
+ return rc;
+}
+
+static int
+efc_domain_free_unreg_vfi_cb(struct efc *efc, int status, u8 *mqe, void *arg)
+{
+ struct efc_domain *domain = arg;
+ int evt = EFC_HW_DOMAIN_FREE_OK;
+ int rc = 0;
+
+ rc = efc_domain_get_mbox_status(domain, mqe, status);
+ if (rc) {
+ evt = EFC_HW_DOMAIN_FREE_FAIL;
+ rc = EFC_FAIL;
+ }
+
+ efc_domain_free_resources(domain, evt, mqe);
+ return rc;
+}
+
+static void
+efc_domain_free_unreg_vfi(struct efc_domain *domain)
+{
+ struct efc *efc = domain->efc;
+ int rc;
+ u8 data[SLI4_BMBX_SIZE];
+
+ rc = sli_cmd_unreg_vfi(efc->sli, data, domain->indicator,
+ SLI4_UNREG_TYPE_DOMAIN);
+ if (rc) {
+ efc_log_err(efc, "UNREG_VFI format failure\n");
+ goto cleanup;
+ }
+
+ rc = efc->tt.issue_mbox_rqst(efc->base, data,
+ efc_domain_free_unreg_vfi_cb, domain);
+ if (rc) {
+ efc_log_err(efc, "UNREG_VFI command failure\n");
+ goto cleanup;
+ }
+
+ return;
+
+cleanup:
+ efc_domain_free_resources(domain, EFC_HW_DOMAIN_FREE_FAIL, data);
+}
+
+int
+efc_cmd_domain_free(struct efc *efc, struct efc_domain *domain)
+{
+ int rc = EFC_SUCCESS;
+
+ if (!domain) {
+ efc_log_err(efc, "bad parameter(s) domain=%p\n", domain);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc,
+ "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ efc_domain_free_unreg_vfi(domain);
+ return rc;
+}
+
+int
+efc_cmd_node_alloc(struct efc *efc, struct efc_remote_node *rnode, u32 fc_addr,
+ struct efc_nport *nport)
+{
+ /* Check for invalid indicator */
+ if (rnode->indicator != U32_MAX) {
+ efc_log_err(efc,
+ "RPI allocation failure addr=%#x rpi=%#x\n",
+ fc_addr, rnode->indicator);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc,
+ "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ /* NULL SLI port indicates an unallocated remote node */
+ rnode->nport = NULL;
+
+ if (sli_resource_alloc(efc->sli, SLI4_RSRC_RPI,
+ &rnode->indicator, &rnode->index)) {
+ efc_log_err(efc, "RPI allocation failure addr=%#x\n",
+ fc_addr);
+ return EFC_FAIL;
+ }
+
+ rnode->fc_id = fc_addr;
+ rnode->nport = nport;
+
+ return EFC_SUCCESS;
+}
+
+static int
+efc_cmd_node_attach_cb(struct efc *efc, int status, u8 *mqe, void *arg)
+{
+ struct efc_remote_node *rnode = arg;
+ struct sli4_mbox_command_header *hdr =
+ (struct sli4_mbox_command_header *)mqe;
+ int evt = 0;
+
+ if (status || le16_to_cpu(hdr->status)) {
+ efc_log_debug(efc, "bad status cqe=%#x mqe=%#x\n", status,
+ le16_to_cpu(hdr->status));
+ rnode->attached = false;
+ evt = EFC_EVT_NODE_ATTACH_FAIL;
+ } else {
+ rnode->attached = true;
+ evt = EFC_EVT_NODE_ATTACH_OK;
+ }
+
+ efc_remote_node_cb(efc, evt, rnode);
+
+ return EFC_SUCCESS;
+}
+
+int
+efc_cmd_node_attach(struct efc *efc, struct efc_remote_node *rnode,
+ struct efc_dma *sparms)
+{
+ int rc = EFC_FAIL;
+ u8 buf[SLI4_BMBX_SIZE];
+
+ if (!rnode || !sparms) {
+ efc_log_err(efc, "bad parameter(s) rnode=%p sparms=%p\n",
+ rnode, sparms);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc, "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ /*
+ * If the attach count is non-zero, this RPI has already been reg'd.
+ * Otherwise, register the RPI
+ */
+ if (rnode->index == U32_MAX) {
+ efc_log_err(efc, "bad parameter rnode->index invalid\n");
+ return EFC_FAIL;
+ }
+
+ /* Update a remote node object with the remote port's service params */
+ if (!sli_cmd_reg_rpi(efc->sli, buf, rnode->indicator,
+ rnode->nport->indicator, rnode->fc_id, sparms, 0, 0))
+ rc = efc->tt.issue_mbox_rqst(efc->base, buf,
+ efc_cmd_node_attach_cb, rnode);
+
+ return rc;
+}
+
+int
+efc_node_free_resources(struct efc *efc, struct efc_remote_node *rnode)
+{
+ int rc = EFC_SUCCESS;
+
+ if (!rnode) {
+ efc_log_err(efc, "bad parameter rnode=%p\n", rnode);
+ return EFC_FAIL;
+ }
+
+ if (rnode->nport) {
+ if (rnode->attached) {
+ efc_log_err(efc, "Err: rnode is still attached\n");
+ return EFC_FAIL;
+ }
+ if (rnode->indicator != U32_MAX) {
+ if (sli_resource_free(efc->sli, SLI4_RSRC_RPI,
+ rnode->indicator)) {
+ efc_log_err(efc,
+ "RPI free fail RPI %d addr=%#x\n",
+ rnode->indicator, rnode->fc_id);
+ rc = EFC_FAIL;
+ } else {
+ rnode->indicator = U32_MAX;
+ rnode->index = U32_MAX;
+ }
+ }
+ }
+
+ return rc;
+}
+
+static int
+efc_cmd_node_free_cb(struct efc *efc, int status, u8 *mqe, void *arg)
+{
+ struct efc_remote_node *rnode = arg;
+ struct sli4_mbox_command_header *hdr =
+ (struct sli4_mbox_command_header *)mqe;
+ int evt = EFC_EVT_NODE_FREE_FAIL;
+ int rc = 0;
+
+ if (status || le16_to_cpu(hdr->status)) {
+ efc_log_debug(efc, "bad status cqe=%#x mqe=%#x\n", status,
+ le16_to_cpu(hdr->status));
+
+ /*
+ * In certain cases, a non-zero MQE status is OK (all must be
+ * true):
+ * - node is attached
+ * - status is 0x1400
+ */
+ if (!rnode->attached ||
+ (le16_to_cpu(hdr->status) != SLI4_MBX_STATUS_RPI_NOT_REG))
+ rc = EFC_FAIL;
+ }
+
+ if (!rc) {
+ rnode->attached = false;
+ evt = EFC_EVT_NODE_FREE_OK;
+ }
+
+ efc_remote_node_cb(efc, evt, rnode);
+
+ return rc;
+}
+
+int
+efc_cmd_node_detach(struct efc *efc, struct efc_remote_node *rnode)
+{
+ u8 buf[SLI4_BMBX_SIZE];
+ int rc = EFC_FAIL;
+
+ if (!rnode) {
+ efc_log_err(efc, "bad parameter rnode=%p\n", rnode);
+ return EFC_FAIL;
+ }
+
+ /*
+ * Check if the chip is in an error state (UE'd) before proceeding.
+ */
+ if (sli_fw_error_status(efc->sli) > 0) {
+ efc_log_crit(efc, "Chip is in an error state - reset needed\n");
+ return EFC_FAIL;
+ }
+
+ if (rnode->nport) {
+ if (!rnode->attached)
+ return EFC_FAIL;
+
+ rc = EFC_FAIL;
+
+ if (!sli_cmd_unreg_rpi(efc->sli, buf, rnode->indicator,
+ SLI4_RSRC_RPI, U32_MAX))
+ rc = efc->tt.issue_mbox_rqst(efc->base, buf,
+ efc_cmd_node_free_cb, rnode);
+
+ if (rc != EFC_SUCCESS) {
+ efc_log_err(efc, "UNREG_RPI failed\n");
+ rc = EFC_FAIL;
+ }
+ }
+
+ return rc;
+}
diff --git a/drivers/scsi/elx/libefc/efc_cmds.h b/drivers/scsi/elx/libefc/efc_cmds.h
new file mode 100644
index 000000000000..9c0287799e9e
--- /dev/null
+++ b/drivers/scsi/elx/libefc/efc_cmds.h
@@ -0,0 +1,35 @@
+/* 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_CMDS_H__
+#define __EFC_CMDS_H__
+
+#define EFC_SPARAM_DMA_SZ 112
+int
+efc_cmd_nport_alloc(struct efc *efc, struct efc_nport *nport,
+ struct efc_domain *domain, u8 *wwpn);
+int
+efc_cmd_nport_attach(struct efc *efc, struct efc_nport *nport, u32 fc_id);
+int
+efc_cmd_nport_free(struct efc *efc, struct efc_nport *nport);
+int
+efc_cmd_domain_alloc(struct efc *efc, struct efc_domain *domain, u32 fcf);
+int
+efc_cmd_domain_attach(struct efc *efc, struct efc_domain *domain, u32 fc_id);
+int
+efc_cmd_domain_free(struct efc *efc, struct efc_domain *domain);
+int
+efc_cmd_node_detach(struct efc *efc, struct efc_remote_node *rnode);
+int
+efc_node_free_resources(struct efc *efc, struct efc_remote_node *rnode);
+int
+efc_cmd_node_attach(struct efc *efc, struct efc_remote_node *rnode,
+ struct efc_dma *sparms);
+int
+efc_cmd_node_alloc(struct efc *efc, struct efc_remote_node *rnode, u32 fc_addr,
+ struct efc_nport *nport);
+
+#endif /* __EFC_CMDS_H */
