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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7be96322a5
Allow the client interface to reopen existing clients if they were closed. This allows clients to recover from reset, which is essential for supporting VF RDMA. In one instance, the driver was not clearing the open bit when the client was closed. Add the code to clear this bit so that the state is accurate and the driver will not attempt to reopen already-open clients. Remove the ref_cnt variable; it was just getting in the way and was not being used consistently. Change-ID: Ic71af4553b096963ac0c56a997f887c9a4ed162d Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
231 lines
6.8 KiB
C
231 lines
6.8 KiB
C
/*******************************************************************************
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*
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* Intel Ethernet Controller XL710 Family Linux Driver
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* Copyright(c) 2013 - 2015 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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******************************************************************************/
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#ifndef _I40E_CLIENT_H_
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#define _I40E_CLIENT_H_
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#define I40E_CLIENT_STR_LENGTH 10
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/* Client interface version should be updated anytime there is a change in the
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* existing APIs or data structures.
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*/
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#define I40E_CLIENT_VERSION_MAJOR 0
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#define I40E_CLIENT_VERSION_MINOR 01
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#define I40E_CLIENT_VERSION_BUILD 00
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#define I40E_CLIENT_VERSION_STR \
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__stringify(I40E_CLIENT_VERSION_MAJOR) "." \
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__stringify(I40E_CLIENT_VERSION_MINOR) "." \
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__stringify(I40E_CLIENT_VERSION_BUILD)
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struct i40e_client_version {
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u8 major;
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u8 minor;
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u8 build;
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u8 rsvd;
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};
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enum i40e_client_state {
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__I40E_CLIENT_NULL,
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__I40E_CLIENT_REGISTERED
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};
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enum i40e_client_instance_state {
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__I40E_CLIENT_INSTANCE_NONE,
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__I40E_CLIENT_INSTANCE_OPENED,
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};
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enum i40e_client_type {
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I40E_CLIENT_IWARP,
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I40E_CLIENT_VMDQ2
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};
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struct i40e_ops;
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struct i40e_client;
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/* HW does not define a type value for AEQ; only for RX/TX and CEQ.
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* In order for us to keep the interface simple, SW will define a
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* unique type value for AEQ.
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*/
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#define I40E_QUEUE_TYPE_PE_AEQ 0x80
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#define I40E_QUEUE_INVALID_IDX 0xFFFF
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struct i40e_qv_info {
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u32 v_idx; /* msix_vector */
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u16 ceq_idx;
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u16 aeq_idx;
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u8 itr_idx;
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};
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struct i40e_qvlist_info {
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u32 num_vectors;
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struct i40e_qv_info qv_info[1];
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};
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#define I40E_CLIENT_MSIX_ALL 0xFFFFFFFF
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/* set of LAN parameters useful for clients managed by LAN */
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/* Struct to hold per priority info */
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struct i40e_prio_qos_params {
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u16 qs_handle; /* qs handle for prio */
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u8 tc; /* TC mapped to prio */
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u8 reserved;
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};
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#define I40E_CLIENT_MAX_USER_PRIORITY 8
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/* Struct to hold Client QoS */
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struct i40e_qos_params {
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struct i40e_prio_qos_params prio_qos[I40E_CLIENT_MAX_USER_PRIORITY];
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};
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struct i40e_params {
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struct i40e_qos_params qos;
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u16 mtu;
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};
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/* Structure to hold Lan device info for a client device */
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struct i40e_info {
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struct i40e_client_version version;
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u8 lanmac[6];
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struct net_device *netdev;
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struct pci_dev *pcidev;
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u8 __iomem *hw_addr;
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u8 fid; /* function id, PF id or VF id */
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#define I40E_CLIENT_FTYPE_PF 0
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#define I40E_CLIENT_FTYPE_VF 1
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u8 ftype; /* function type, PF or VF */
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void *pf;
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/* All L2 params that could change during the life span of the PF
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* and needs to be communicated to the client when they change
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*/
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struct i40e_qvlist_info *qvlist_info;
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struct i40e_params params;
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struct i40e_ops *ops;
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u16 msix_count; /* number of msix vectors*/
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/* Array down below will be dynamically allocated based on msix_count */
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struct msix_entry *msix_entries;
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u16 itr_index; /* Which ITR index the PE driver is suppose to use */
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u16 fw_maj_ver; /* firmware major version */
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u16 fw_min_ver; /* firmware minor version */
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u32 fw_build; /* firmware build number */
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};
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#define I40E_CLIENT_RESET_LEVEL_PF 1
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#define I40E_CLIENT_RESET_LEVEL_CORE 2
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#define I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE BIT(1)
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struct i40e_ops {
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/* setup_q_vector_list enables queues with a particular vector */
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int (*setup_qvlist)(struct i40e_info *ldev, struct i40e_client *client,
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struct i40e_qvlist_info *qv_info);
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int (*virtchnl_send)(struct i40e_info *ldev, struct i40e_client *client,
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u32 vf_id, u8 *msg, u16 len);
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/* If the PE Engine is unresponsive, RDMA driver can request a reset.
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* The level helps determine the level of reset being requested.
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*/
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void (*request_reset)(struct i40e_info *ldev,
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struct i40e_client *client, u32 level);
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/* API for the RDMA driver to set certain VSI flags that control
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* PE Engine.
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*/
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int (*update_vsi_ctxt)(struct i40e_info *ldev,
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struct i40e_client *client,
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bool is_vf, u32 vf_id,
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u32 flag, u32 valid_flag);
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};
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struct i40e_client_ops {
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/* Should be called from register_client() or whenever PF is ready
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* to create a specific client instance.
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*/
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int (*open)(struct i40e_info *ldev, struct i40e_client *client);
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/* Should be called when netdev is unavailable or when unregister
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* call comes in. If the close is happenening due to a reset being
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* triggered set the reset bit to true.
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*/
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void (*close)(struct i40e_info *ldev, struct i40e_client *client,
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bool reset);
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/* called when some l2 managed parameters changes - mtu */
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void (*l2_param_change)(struct i40e_info *ldev,
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struct i40e_client *client,
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struct i40e_params *params);
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int (*virtchnl_receive)(struct i40e_info *ldev,
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struct i40e_client *client, u32 vf_id,
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u8 *msg, u16 len);
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/* called when a VF is reset by the PF */
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void (*vf_reset)(struct i40e_info *ldev,
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struct i40e_client *client, u32 vf_id);
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/* called when the number of VFs changes */
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void (*vf_enable)(struct i40e_info *ldev,
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struct i40e_client *client, u32 num_vfs);
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/* returns true if VF is capable of specified offload */
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int (*vf_capable)(struct i40e_info *ldev,
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struct i40e_client *client, u32 vf_id);
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};
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/* Client device */
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struct i40e_client_instance {
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struct list_head list;
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struct i40e_info lan_info;
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struct i40e_client *client;
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unsigned long state;
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};
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struct i40e_client {
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struct list_head list; /* list of registered clients */
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char name[I40E_CLIENT_STR_LENGTH];
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struct i40e_client_version version;
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unsigned long state; /* client state */
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atomic_t ref_cnt; /* Count of all the client devices of this kind */
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u32 flags;
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#define I40E_CLIENT_FLAGS_LAUNCH_ON_PROBE BIT(0)
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#define I40E_TX_FLAGS_NOTIFY_OTHER_EVENTS BIT(2)
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enum i40e_client_type type;
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const struct i40e_client_ops *ops; /* client ops provided by the client */
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};
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static inline bool i40e_client_is_registered(struct i40e_client *client)
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{
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return test_bit(__I40E_CLIENT_REGISTERED, &client->state);
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}
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/* used by clients */
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int i40e_register_client(struct i40e_client *client);
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int i40e_unregister_client(struct i40e_client *client);
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#endif /* _I40E_CLIENT_H_ */
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