From 0372c546eca575445331c0ad8902210b70be6d61 Mon Sep 17 00:00:00 2001 From: Yishai Hadas Date: Thu, 2 Jun 2022 12:41:00 +0300 Subject: net/mlx5: Introduce ifc bits for using software vhca id Introduce ifc related stuff to enable using software vhca id functionality. Signed-off-by: Yishai Hadas Reviewed-by: Mark Bloch Signed-off-by: Saeed Mahameed --- include/linux/mlx5/mlx5_ifc.h | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 8e87eb47f9dc..254cc22f5eec 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -1826,7 +1826,14 @@ struct mlx5_ifc_cmd_hca_cap_2_bits { u8 max_reformat_remove_size[0x8]; u8 max_reformat_remove_offset[0x8]; - u8 reserved_at_c0[0x740]; + u8 reserved_at_c0[0x160]; + + u8 reserved_at_220[0x1]; + u8 sw_vhca_id_valid[0x1]; + u8 sw_vhca_id[0xe]; + u8 reserved_at_230[0x10]; + + u8 reserved_at_240[0x5c0]; }; enum mlx5_ifc_flow_destination_type { @@ -3782,6 +3789,11 @@ struct mlx5_ifc_rmpc_bits { struct mlx5_ifc_wq_bits wq; }; +enum { + VHCA_ID_TYPE_HW = 0, + VHCA_ID_TYPE_SW = 1, +}; + struct mlx5_ifc_nic_vport_context_bits { u8 reserved_at_0[0x5]; u8 min_wqe_inline_mode[0x3]; @@ -3798,8 +3810,8 @@ struct mlx5_ifc_nic_vport_context_bits { u8 event_on_mc_address_change[0x1]; u8 event_on_uc_address_change[0x1]; - u8 reserved_at_40[0xc]; - + u8 vhca_id_type[0x1]; + u8 reserved_at_41[0xb]; u8 affiliation_criteria[0x4]; u8 affiliated_vhca_id[0x10]; @@ -7259,7 +7271,12 @@ struct mlx5_ifc_init_hca_in_bits { u8 reserved_at_20[0x10]; u8 op_mod[0x10]; - u8 reserved_at_40[0x40]; + u8 reserved_at_40[0x20]; + + u8 reserved_at_60[0x2]; + u8 sw_vhca_id[0xe]; + u8 reserved_at_70[0x10]; + u8 sw_owner_id[4][0x20]; }; -- cgit v1.2.3 From dc402ccc0d7b55922a79505df3000da7deb77a2b Mon Sep 17 00:00:00 2001 From: Yishai Hadas Date: Thu, 2 Jun 2022 12:47:34 +0300 Subject: net/mlx5: Use software VHCA id when it's supported Use software VHCA id when it's supported by the firmware. A unique id is allocated upon mlx5_mdev_init() and freed upon mlx5_mdev_uninit(), as such it stays the same during the full life cycle of the device including upon health recovery if occurred. The conjunction of sw_vhca_id with sw_owner_id will be a global unique id per function which uses mlx5_core. The sw_vhca_id is set upon init_hca command and is used to specify the VHCA that the NIC vport is affiliated with. This functionality is needed upon migration of VM which is MPV based. (i.e. multi port device). Signed-off-by: Yishai Hadas Reviewed-by: Mark Bloch Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/fw.c | 4 ++ drivers/net/ethernet/mellanox/mlx5/core/main.c | 49 +++++++++++++++++++++++++ drivers/net/ethernet/mellanox/mlx5/core/vport.c | 14 +++++-- include/linux/mlx5/driver.h | 1 + 4 files changed, 65 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c index cfb8bedba512..079fa44ada71 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c @@ -289,6 +289,10 @@ int mlx5_cmd_init_hca(struct mlx5_core_dev *dev, uint32_t *sw_owner_id) sw_owner_id[i]); } + if (MLX5_CAP_GEN_2_MAX(dev, sw_vhca_id_valid) && + dev->priv.sw_vhca_id > 0) + MLX5_SET(init_hca_in, in, sw_vhca_id, dev->priv.sw_vhca_id); + return mlx5_cmd_exec_in(dev, init_hca, in); } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index a9e51c1b7738..8b621c1ddd14 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -90,6 +90,8 @@ module_param_named(prof_sel, prof_sel, uint, 0444); MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2"); static u32 sw_owner_id[4]; +#define MAX_SW_VHCA_ID (BIT(__mlx5_bit_sz(cmd_hca_cap_2, sw_vhca_id)) - 1) +static DEFINE_IDA(sw_vhca_ida); enum { MLX5_ATOMIC_REQ_MODE_BE = 0x0, @@ -492,6 +494,31 @@ static int max_uc_list_get_devlink_param(struct mlx5_core_dev *dev) return err; } +static int handle_hca_cap_2(struct mlx5_core_dev *dev, void *set_ctx) +{ + void *set_hca_cap; + int err; + + if (!MLX5_CAP_GEN_MAX(dev, hca_cap_2)) + return 0; + + err = mlx5_core_get_caps(dev, MLX5_CAP_GENERAL_2); + if (err) + return err; + + if (!MLX5_CAP_GEN_2_MAX(dev, sw_vhca_id_valid) || + !(dev->priv.sw_vhca_id > 0)) + return 0; + + set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, + capability); + memcpy(set_hca_cap, dev->caps.hca[MLX5_CAP_GENERAL_2]->cur, + MLX5_ST_SZ_BYTES(cmd_hca_cap_2)); + MLX5_SET(cmd_hca_cap_2, set_hca_cap, sw_vhca_id_valid, 1); + + return set_caps(dev, set_ctx, MLX5_CAP_GENERAL_2); +} + static int handle_hca_cap(struct mlx5_core_dev *dev, void *set_ctx) { struct mlx5_profile *prof = &dev->profile; @@ -662,6 +689,13 @@ static int set_hca_cap(struct mlx5_core_dev *dev) goto out; } + memset(set_ctx, 0, set_sz); + err = handle_hca_cap_2(dev, set_ctx); + if (err) { + mlx5_core_err(dev, "handle_hca_cap_2 failed\n"); + goto out; + } + out: kfree(set_ctx); return err; @@ -1506,6 +1540,18 @@ int mlx5_mdev_init(struct mlx5_core_dev *dev, int profile_idx) if (err) goto err_hca_caps; + /* The conjunction of sw_vhca_id with sw_owner_id will be a global + * unique id per function which uses mlx5_core. + * Those values are supplied to FW as part of the init HCA command to + * be used by both driver and FW when it's applicable. + */ + dev->priv.sw_vhca_id = ida_alloc_range(&sw_vhca_ida, 1, + MAX_SW_VHCA_ID, + GFP_KERNEL); + if (dev->priv.sw_vhca_id < 0) + mlx5_core_err(dev, "failed to allocate sw_vhca_id, err=%d\n", + dev->priv.sw_vhca_id); + return 0; err_hca_caps: @@ -1530,6 +1576,9 @@ void mlx5_mdev_uninit(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; + if (priv->sw_vhca_id > 0) + ida_free(&sw_vhca_ida, dev->priv.sw_vhca_id); + mlx5_hca_caps_free(dev); mlx5_adev_cleanup(dev); mlx5_pagealloc_cleanup(dev); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/vport.c b/drivers/net/ethernet/mellanox/mlx5/core/vport.c index ac020cb78072..d5c317325030 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/vport.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/vport.c @@ -1086,9 +1086,17 @@ int mlx5_nic_vport_affiliate_multiport(struct mlx5_core_dev *master_mdev, goto free; MLX5_SET(modify_nic_vport_context_in, in, field_select.affiliation, 1); - MLX5_SET(modify_nic_vport_context_in, in, - nic_vport_context.affiliated_vhca_id, - MLX5_CAP_GEN(master_mdev, vhca_id)); + if (MLX5_CAP_GEN_2(master_mdev, sw_vhca_id_valid)) { + MLX5_SET(modify_nic_vport_context_in, in, + nic_vport_context.vhca_id_type, VHCA_ID_TYPE_SW); + MLX5_SET(modify_nic_vport_context_in, in, + nic_vport_context.affiliated_vhca_id, + MLX5_CAP_GEN_2(master_mdev, sw_vhca_id)); + } else { + MLX5_SET(modify_nic_vport_context_in, in, + nic_vport_context.affiliated_vhca_id, + MLX5_CAP_GEN(master_mdev, vhca_id)); + } MLX5_SET(modify_nic_vport_context_in, in, nic_vport_context.affiliation_criteria, MLX5_CAP_GEN(port_mdev, affiliate_nic_vport_criteria)); diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index bd882884b23c..ecda6e63d5f2 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -610,6 +610,7 @@ struct mlx5_priv { spinlock_t ctx_lock; struct mlx5_adev **adev; int adev_idx; + int sw_vhca_id; struct mlx5_events *events; struct mlx5_flow_steering *steering; -- cgit v1.2.3