From: Ivan Malov <ivan.malov@oktetlabs.ru>
Add an API for client drivers to query the engine limits.
Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
---
drivers/common/sfc_efx/base/efx.h | 10 +++
drivers/common/sfc_efx/base/efx_impl.h | 1 +
drivers/common/sfc_efx/base/efx_mae.c | 72 +++++++++++++++++++
.../sfc_efx/rte_common_sfc_efx_version.map | 1 +
4 files changed, 84 insertions(+)
@@ -4048,6 +4048,16 @@ extern void
efx_mae_fini(
__in efx_nic_t *enp);
+typedef struct efx_mae_limits_s {
+ uint32_t eml_max_n_action_prios;
+} efx_mae_limits_t;
+
+LIBEFX_API
+extern __checkReturn efx_rc_t
+efx_mae_get_limits(
+ __in efx_nic_t *enp,
+ __out efx_mae_limits_t *emlp);
+
#endif /* EFSYS_OPT_MAE */
#ifdef __cplusplus
@@ -783,6 +783,7 @@ typedef struct efx_proxy_ops_s {
#if EFSYS_OPT_MAE
typedef struct efx_mae_s {
+ uint32_t em_max_n_action_prios;
} efx_mae_t;
#endif /* EFSYS_OPT_MAE */
@@ -10,6 +10,47 @@
#if EFSYS_OPT_MAE
+static __checkReturn efx_rc_t
+efx_mae_get_capabilities(
+ __in efx_nic_t *enp)
+{
+ efx_mcdi_req_t req;
+ EFX_MCDI_DECLARE_BUF(payload,
+ MC_CMD_MAE_GET_CAPS_IN_LEN,
+ MC_CMD_MAE_GET_CAPS_OUT_LEN);
+ struct efx_mae_s *maep = enp->en_maep;
+ efx_rc_t rc;
+
+ req.emr_cmd = MC_CMD_MAE_GET_CAPS;
+ req.emr_in_buf = payload;
+ req.emr_in_length = MC_CMD_MAE_GET_CAPS_IN_LEN;
+ req.emr_out_buf = payload;
+ req.emr_out_length = MC_CMD_MAE_GET_CAPS_OUT_LEN;
+
+ efx_mcdi_execute(enp, &req);
+
+ if (req.emr_rc != 0) {
+ rc = req.emr_rc;
+ goto fail1;
+ }
+
+ if (req.emr_out_length_used < MC_CMD_MAE_GET_CAPS_OUT_LEN) {
+ rc = EMSGSIZE;
+ goto fail2;
+ }
+
+ maep->em_max_n_action_prios =
+ MCDI_OUT_DWORD(req, MAE_GET_CAPS_OUT_ACTION_PRIOS);
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+ return (rc);
+}
+
__checkReturn efx_rc_t
efx_mae_init(
__in efx_nic_t *enp)
@@ -31,8 +72,16 @@ efx_mae_init(
enp->en_maep = maep;
+ rc = efx_mae_get_capabilities(enp);
+ if (rc != 0)
+ goto fail3;
+
return (0);
+fail3:
+ EFSYS_PROBE(fail3);
+ EFSYS_KMEM_FREE(enp->en_esip, sizeof (struct efx_mae_s), enp->en_maep);
+ enp->en_maep = NULL;
fail2:
EFSYS_PROBE(fail2);
fail1:
@@ -54,4 +103,27 @@ efx_mae_fini(
enp->en_maep = NULL;
}
+ __checkReturn efx_rc_t
+efx_mae_get_limits(
+ __in efx_nic_t *enp,
+ __out efx_mae_limits_t *emlp)
+{
+ const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
+ struct efx_mae_s *maep = enp->en_maep;
+ efx_rc_t rc;
+
+ if (encp->enc_mae_supported == B_FALSE) {
+ rc = ENOTSUP;
+ goto fail1;
+ }
+
+ emlp->eml_max_n_action_prios = maep->em_max_n_action_prios;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+ return (rc);
+}
+
#endif /* EFSYS_OPT_MAE */
@@ -86,6 +86,7 @@ INTERNAL {
efx_mac_up;
efx_mae_fini;
+ efx_mae_get_limits;
efx_mae_init;
efx_mcdi_fini;