[PATCH v2 21/45] common/sfc_efx/base: obtain assigned netport handle from NIC

[Ivan Malov]

Get an 'assigned' netport handle for the current MCDI entity.
This handle will be used when sending other netport commands.

Signed-off-by: Ivan Malov <ivan.ma...@arknetworks.am>
Reviewed-by: Andy Moreton <andy.more...@amd.com>
Reviewed-by: Pieter Jansen Van Vuuren <pieter.jansen-van-vuu...@amd.com>
---
 drivers/common/sfc_efx/base/efx_impl.h |  4 +++
 drivers/common/sfc_efx/base/efx_np.c   | 50 ++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)

diff --git a/drivers/common/sfc_efx/base/efx_impl.h 
b/drivers/common/sfc_efx/base/efx_impl.h
index 9ad973ded7..4952f45121 100644
--- a/drivers/common/sfc_efx/base/efx_impl.h
+++ b/drivers/common/sfc_efx/base/efx_impl.h
@@ -335,6 +335,8 @@ typedef struct efx_virtio_ops_s {
 } efx_virtio_ops_t;
 #endif /* EFSYS_OPT_VIRTIO */
 
+typedef uint32_t efx_np_handle_t;
+
 typedef struct efx_port_s {
        efx_mac_type_t          ep_mac_type;
        uint32_t                ep_phy_type;
@@ -378,6 +380,8 @@ typedef struct efx_port_s {
 #endif
        const efx_mac_ops_t     *ep_emop;
        const efx_phy_ops_t     *ep_epop;
+
+       efx_np_handle_t         ep_np_handle;
 } efx_port_t;
 
 typedef struct efx_mon_ops_s {
diff --git a/drivers/common/sfc_efx/base/efx_np.c 
b/drivers/common/sfc_efx/base/efx_np.c
index abb8e20e4d..404d2887b0 100644
--- a/drivers/common/sfc_efx/base/efx_np.c
+++ b/drivers/common/sfc_efx/base/efx_np.c
@@ -41,12 +41,53 @@ efx_np_assign_legacy_props(
        encp->enc_port = 0;
 }
 
+static __checkReturn           efx_rc_t
+efx_np_get_assigned_handle(
+       __in                    efx_nic_t *enp,
+       __out                   efx_np_handle_t *nphp)
+{
+       EFX_MCDI_DECLARE_BUF(payload,
+           MC_CMD_GET_ASSIGNED_PORT_HANDLE_IN_LEN,
+           MC_CMD_GET_ASSIGNED_PORT_HANDLE_OUT_LEN);
+       efx_mcdi_req_t req;
+       efx_rc_t rc;
+
+       req.emr_out_length = MC_CMD_GET_ASSIGNED_PORT_HANDLE_OUT_LEN;
+       req.emr_in_length = MC_CMD_GET_ASSIGNED_PORT_HANDLE_IN_LEN;
+       req.emr_cmd = MC_CMD_GET_ASSIGNED_PORT_HANDLE;
+       req.emr_out_buf = payload;
+       req.emr_in_buf = payload;
+
+       efx_mcdi_execute(enp, &req);
+
+       if (req.emr_rc != 0) {
+               rc = req.emr_rc;
+               goto fail1;
+       }
+
+       if (req.emr_out_length_used < MC_CMD_GET_ASSIGNED_PORT_HANDLE_OUT_LEN) {
+               rc = EMSGSIZE;
+               goto fail2;
+       }
+
+       *nphp = MCDI_OUT_DWORD(req, GET_ASSIGNED_PORT_HANDLE_OUT_PORT_HANDLE);
+       return (0);
+
+fail2:
+       EFSYS_PROBE(fail2);
+
+fail1:
+       EFSYS_PROBE1(fail1, efx_rc_t, rc);
+       return (rc);
+}
+
        __checkReturn   efx_rc_t
 efx_np_attach(
        __in            efx_nic_t *enp)
 {
        efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
        efx_port_t *epp = &(enp->en_port);
+       efx_rc_t rc;
 
        if (efx_np_supported(enp) == B_FALSE)
                return (0);
@@ -63,7 +104,16 @@ efx_np_attach(
 
        epp->ep_fixed_port_type = EFX_PHY_MEDIA_INVALID;
        epp->ep_module_type = EFX_PHY_MEDIA_INVALID;
+
+       rc = efx_np_get_assigned_handle(enp, &epp->ep_np_handle);
+       if (rc != 0)
+               goto fail1;
+
        return (0);
+
+fail1:
+       EFSYS_PROBE1(fail1, efx_rc_t, rc);
+       return (rc);
 }
 
                void
-- 
2.39.5