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Message-ID: <20240801093115.8553-2-michal.swiatkowski@linux.intel.com>
Date: Thu, 1 Aug 2024 11:31:09 +0200
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
pawel.chmielewski@...el.com,
sridhar.samudrala@...el.com,
jacob.e.keller@...el.com,
pio.raczynski@...il.com,
konrad.knitter@...el.com,
marcin.szycik@...el.com,
wojciech.drewek@...el.com,
nex.sw.ncis.nat.hpm.dev@...el.com,
przemyslaw.kitszel@...el.com,
jiri@...nulli.us
Subject: [iwl-next v2 1/7] ice: devlink PF MSI-X max and min parameter
Use generic devlink PF MSI-X parameter to allow user to change MSI-X
range.
Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
---
.../net/ethernet/intel/ice/devlink/devlink.c | 56 ++++++++++++++++++-
drivers/net/ethernet/intel/ice/ice.h | 8 +++
drivers/net/ethernet/intel/ice/ice_irq.c | 14 ++++-
3 files changed, 76 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink.c b/drivers/net/ethernet/intel/ice/devlink/devlink.c
index 29a5f822cb8b..bdc22ea13e0f 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.c
@@ -1518,6 +1518,32 @@ static int ice_devlink_local_fwd_validate(struct devlink *devlink, u32 id,
return 0;
}
+static int
+ice_devlink_msix_max_pf_validate(struct devlink *devlink, u32 id,
+ union devlink_param_value val,
+ struct netlink_ext_ack *extack)
+{
+ if (val.vu16 > ICE_MAX_MSIX) {
+ NL_SET_ERR_MSG_MOD(extack, "PF max MSI-X is too high");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+ice_devlink_msix_min_pf_validate(struct devlink *devlink, u32 id,
+ union devlink_param_value val,
+ struct netlink_ext_ack *extack)
+{
+ if (val.vu16 <= ICE_MIN_MSIX) {
+ NL_SET_ERR_MSG_MOD(extack, "PF min MSI-X is too low");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
enum ice_param_id {
ICE_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
ICE_DEVLINK_PARAM_ID_TX_SCHED_LAYERS,
@@ -1535,6 +1561,15 @@ static const struct devlink_param ice_dvl_rdma_params[] = {
ice_devlink_enable_iw_validate),
};
+static const struct devlink_param ice_dvl_msix_params[] = {
+ DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MAX,
+ BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
+ NULL, NULL, ice_devlink_msix_max_pf_validate),
+ DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MIN,
+ BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
+ NULL, NULL, ice_devlink_msix_min_pf_validate),
+};
+
static const struct devlink_param ice_dvl_sched_params[] = {
DEVLINK_PARAM_DRIVER(ICE_DEVLINK_PARAM_ID_TX_SCHED_LAYERS,
"tx_scheduling_layers",
@@ -1637,6 +1672,7 @@ void ice_devlink_unregister(struct ice_pf *pf)
int ice_devlink_register_params(struct ice_pf *pf)
{
struct devlink *devlink = priv_to_devlink(pf);
+ union devlink_param_value value;
struct ice_hw *hw = &pf->hw;
int status;
@@ -1645,11 +1681,27 @@ int ice_devlink_register_params(struct ice_pf *pf)
if (status)
return status;
+ status = devl_params_register(devlink, ice_dvl_msix_params,
+ ARRAY_SIZE(ice_dvl_msix_params));
+ if (status)
+ return status;
+
if (hw->func_caps.common_cap.tx_sched_topo_comp_mode_en)
status = devl_params_register(devlink, ice_dvl_sched_params,
ARRAY_SIZE(ice_dvl_sched_params));
+ if (status)
+ return status;
- return status;
+ value.vu16 = pf->msix.max;
+ devl_param_driverinit_value_set(devlink,
+ DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
+ value);
+ value.vu16 = pf->msix.min;
+ devl_param_driverinit_value_set(devlink,
+ DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
+ value);
+
+ return 0;
}
void ice_devlink_unregister_params(struct ice_pf *pf)
@@ -1659,6 +1711,8 @@ void ice_devlink_unregister_params(struct ice_pf *pf)
devl_params_unregister(devlink, ice_dvl_rdma_params,
ARRAY_SIZE(ice_dvl_rdma_params));
+ devl_params_unregister(devlink, ice_dvl_msix_params,
+ ARRAY_SIZE(ice_dvl_msix_params));
if (hw->func_caps.common_cap.tx_sched_topo_comp_mode_en)
devl_params_unregister(devlink, ice_dvl_sched_params,
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 4c563b0d57ac..f58a5bae578a 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -95,6 +95,7 @@
#define ICE_MIN_LAN_TXRX_MSIX 1
#define ICE_MIN_LAN_OICR_MSIX 1
#define ICE_MIN_MSIX (ICE_MIN_LAN_TXRX_MSIX + ICE_MIN_LAN_OICR_MSIX)
+#define ICE_MAX_MSIX 256
#define ICE_FDIR_MSIX 2
#define ICE_RDMA_NUM_AEQ_MSIX 4
#define ICE_MIN_RDMA_MSIX 2
@@ -543,6 +544,12 @@ struct ice_agg_node {
u8 valid;
};
+struct ice_pf_msix {
+ u16 cur;
+ u16 min;
+ u16 max;
+};
+
struct ice_pf {
struct pci_dev *pdev;
struct ice_adapter *adapter;
@@ -613,6 +620,7 @@ struct ice_pf {
struct msi_map ll_ts_irq; /* LL_TS interrupt MSIX vector */
u16 max_pf_txqs; /* Total Tx queues PF wide */
u16 max_pf_rxqs; /* Total Rx queues PF wide */
+ struct ice_pf_msix msix;
u16 num_lan_msix; /* Total MSIX vectors for base driver */
u16 num_lan_tx; /* num LAN Tx queues setup */
u16 num_lan_rx; /* num LAN Rx queues setup */
diff --git a/drivers/net/ethernet/intel/ice/ice_irq.c b/drivers/net/ethernet/intel/ice/ice_irq.c
index ad82ff7d1995..4e559fd6e49f 100644
--- a/drivers/net/ethernet/intel/ice/ice_irq.c
+++ b/drivers/net/ethernet/intel/ice/ice_irq.c
@@ -252,7 +252,19 @@ void ice_clear_interrupt_scheme(struct ice_pf *pf)
int ice_init_interrupt_scheme(struct ice_pf *pf)
{
int total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors;
- int vectors, max_vectors;
+ union devlink_param_value value;
+ int vectors, max_vectors, err;
+
+ /* load default PF MSI-X range */
+ err = devl_param_driverinit_value_get(priv_to_devlink(pf),
+ DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
+ &value);
+ pf->msix.min = err ? ICE_MIN_MSIX : value.vu16;
+
+ err = devl_param_driverinit_value_get(priv_to_devlink(pf),
+ DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
+ &value);
+ pf->msix.max = err ? total_vectors / 2 : value.vu16;
vectors = ice_ena_msix_range(pf);
--
2.42.0
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