mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 04:25:09 +07:00
0ef2d5afb1
(KISS is Keep It Simple, Stupid. Or is it?) The client interface vastly overengineered for what it needs to do. It was originally designed to support multiple clients on multiple netdevs, possibly even with multiple drivers. None of this happened, and now we know that there will only ever be one client for i40e (i40iw) and one for i40evf (i40iwvf). So, time for some KISS. Since i40e and i40evf are a Dynasty, we'll simplify this one to match the VF interface. First, be a Destroyer and remove all of the lists and locks required to support multiple clients. Keep one static around to keep track of one client, and track the client instances for each netdev in the driver's pf (or adapter) struct. Now it's Almost Human. Since we already know the client type is iWarp, get rid of any checks for this. Same for VSI type - it's always going to be the same type, so it's just a Parasite. While we're at it, fix up some comments. This makes the function headers actually match the functions. These changes reduce code complexity, simplify maintenance, squash some lurking timing bugs, and allow us to Rock and Roll All Nite. Change-ID: I1ea79948ad73b8685272451440a34507f9a9012e Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
227 lines
6.8 KiB
C
227 lines
6.8 KiB
C
/*******************************************************************************
|
|
*
|
|
* Intel Ethernet Controller XL710 Family Linux Driver
|
|
* Copyright(c) 2013 - 2015 Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* The full GNU General Public License is included in this distribution in
|
|
* the file called "COPYING".
|
|
*
|
|
* Contact Information:
|
|
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
|
|
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
*
|
|
******************************************************************************/
|
|
|
|
#ifndef _I40E_CLIENT_H_
|
|
#define _I40E_CLIENT_H_
|
|
|
|
#define I40E_CLIENT_STR_LENGTH 10
|
|
|
|
/* Client interface version should be updated anytime there is a change in the
|
|
* existing APIs or data structures.
|
|
*/
|
|
#define I40E_CLIENT_VERSION_MAJOR 0
|
|
#define I40E_CLIENT_VERSION_MINOR 01
|
|
#define I40E_CLIENT_VERSION_BUILD 00
|
|
#define I40E_CLIENT_VERSION_STR \
|
|
__stringify(I40E_CLIENT_VERSION_MAJOR) "." \
|
|
__stringify(I40E_CLIENT_VERSION_MINOR) "." \
|
|
__stringify(I40E_CLIENT_VERSION_BUILD)
|
|
|
|
struct i40e_client_version {
|
|
u8 major;
|
|
u8 minor;
|
|
u8 build;
|
|
u8 rsvd;
|
|
};
|
|
|
|
enum i40e_client_state {
|
|
__I40E_CLIENT_NULL,
|
|
__I40E_CLIENT_REGISTERED
|
|
};
|
|
|
|
enum i40e_client_instance_state {
|
|
__I40E_CLIENT_INSTANCE_NONE,
|
|
__I40E_CLIENT_INSTANCE_OPENED,
|
|
};
|
|
|
|
struct i40e_ops;
|
|
struct i40e_client;
|
|
|
|
/* HW does not define a type value for AEQ; only for RX/TX and CEQ.
|
|
* In order for us to keep the interface simple, SW will define a
|
|
* unique type value for AEQ.
|
|
*/
|
|
#define I40E_QUEUE_TYPE_PE_AEQ 0x80
|
|
#define I40E_QUEUE_INVALID_IDX 0xFFFF
|
|
|
|
struct i40e_qv_info {
|
|
u32 v_idx; /* msix_vector */
|
|
u16 ceq_idx;
|
|
u16 aeq_idx;
|
|
u8 itr_idx;
|
|
};
|
|
|
|
struct i40e_qvlist_info {
|
|
u32 num_vectors;
|
|
struct i40e_qv_info qv_info[1];
|
|
};
|
|
|
|
#define I40E_CLIENT_MSIX_ALL 0xFFFFFFFF
|
|
|
|
/* set of LAN parameters useful for clients managed by LAN */
|
|
|
|
/* Struct to hold per priority info */
|
|
struct i40e_prio_qos_params {
|
|
u16 qs_handle; /* qs handle for prio */
|
|
u8 tc; /* TC mapped to prio */
|
|
u8 reserved;
|
|
};
|
|
|
|
#define I40E_CLIENT_MAX_USER_PRIORITY 8
|
|
/* Struct to hold Client QoS */
|
|
struct i40e_qos_params {
|
|
struct i40e_prio_qos_params prio_qos[I40E_CLIENT_MAX_USER_PRIORITY];
|
|
};
|
|
|
|
struct i40e_params {
|
|
struct i40e_qos_params qos;
|
|
u16 mtu;
|
|
};
|
|
|
|
/* Structure to hold Lan device info for a client device */
|
|
struct i40e_info {
|
|
struct i40e_client_version version;
|
|
u8 lanmac[6];
|
|
struct net_device *netdev;
|
|
struct pci_dev *pcidev;
|
|
u8 __iomem *hw_addr;
|
|
u8 fid; /* function id, PF id or VF id */
|
|
#define I40E_CLIENT_FTYPE_PF 0
|
|
#define I40E_CLIENT_FTYPE_VF 1
|
|
u8 ftype; /* function type, PF or VF */
|
|
void *pf;
|
|
|
|
/* All L2 params that could change during the life span of the PF
|
|
* and needs to be communicated to the client when they change
|
|
*/
|
|
struct i40e_qvlist_info *qvlist_info;
|
|
struct i40e_params params;
|
|
struct i40e_ops *ops;
|
|
|
|
u16 msix_count; /* number of msix vectors*/
|
|
/* Array down below will be dynamically allocated based on msix_count */
|
|
struct msix_entry *msix_entries;
|
|
u16 itr_index; /* Which ITR index the PE driver is suppose to use */
|
|
u16 fw_maj_ver; /* firmware major version */
|
|
u16 fw_min_ver; /* firmware minor version */
|
|
u32 fw_build; /* firmware build number */
|
|
};
|
|
|
|
#define I40E_CLIENT_RESET_LEVEL_PF 1
|
|
#define I40E_CLIENT_RESET_LEVEL_CORE 2
|
|
#define I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE BIT(1)
|
|
|
|
struct i40e_ops {
|
|
/* setup_q_vector_list enables queues with a particular vector */
|
|
int (*setup_qvlist)(struct i40e_info *ldev, struct i40e_client *client,
|
|
struct i40e_qvlist_info *qv_info);
|
|
|
|
int (*virtchnl_send)(struct i40e_info *ldev, struct i40e_client *client,
|
|
u32 vf_id, u8 *msg, u16 len);
|
|
|
|
/* If the PE Engine is unresponsive, RDMA driver can request a reset.
|
|
* The level helps determine the level of reset being requested.
|
|
*/
|
|
void (*request_reset)(struct i40e_info *ldev,
|
|
struct i40e_client *client, u32 level);
|
|
|
|
/* API for the RDMA driver to set certain VSI flags that control
|
|
* PE Engine.
|
|
*/
|
|
int (*update_vsi_ctxt)(struct i40e_info *ldev,
|
|
struct i40e_client *client,
|
|
bool is_vf, u32 vf_id,
|
|
u32 flag, u32 valid_flag);
|
|
};
|
|
|
|
struct i40e_client_ops {
|
|
/* Should be called from register_client() or whenever PF is ready
|
|
* to create a specific client instance.
|
|
*/
|
|
int (*open)(struct i40e_info *ldev, struct i40e_client *client);
|
|
|
|
/* Should be called when netdev is unavailable or when unregister
|
|
* call comes in. If the close is happenening due to a reset being
|
|
* triggered set the reset bit to true.
|
|
*/
|
|
void (*close)(struct i40e_info *ldev, struct i40e_client *client,
|
|
bool reset);
|
|
|
|
/* called when some l2 managed parameters changes - mtu */
|
|
void (*l2_param_change)(struct i40e_info *ldev,
|
|
struct i40e_client *client,
|
|
struct i40e_params *params);
|
|
|
|
int (*virtchnl_receive)(struct i40e_info *ldev,
|
|
struct i40e_client *client, u32 vf_id,
|
|
u8 *msg, u16 len);
|
|
|
|
/* called when a VF is reset by the PF */
|
|
void (*vf_reset)(struct i40e_info *ldev,
|
|
struct i40e_client *client, u32 vf_id);
|
|
|
|
/* called when the number of VFs changes */
|
|
void (*vf_enable)(struct i40e_info *ldev,
|
|
struct i40e_client *client, u32 num_vfs);
|
|
|
|
/* returns true if VF is capable of specified offload */
|
|
int (*vf_capable)(struct i40e_info *ldev,
|
|
struct i40e_client *client, u32 vf_id);
|
|
};
|
|
|
|
/* Client device */
|
|
struct i40e_client_instance {
|
|
struct list_head list;
|
|
struct i40e_info lan_info;
|
|
struct i40e_client *client;
|
|
unsigned long state;
|
|
};
|
|
|
|
struct i40e_client {
|
|
struct list_head list; /* list of registered clients */
|
|
char name[I40E_CLIENT_STR_LENGTH];
|
|
struct i40e_client_version version;
|
|
unsigned long state; /* client state */
|
|
atomic_t ref_cnt; /* Count of all the client devices of this kind */
|
|
u32 flags;
|
|
#define I40E_CLIENT_FLAGS_LAUNCH_ON_PROBE BIT(0)
|
|
#define I40E_TX_FLAGS_NOTIFY_OTHER_EVENTS BIT(2)
|
|
u8 type;
|
|
#define I40E_CLIENT_IWARP 0
|
|
const struct i40e_client_ops *ops; /* client ops provided by the client */
|
|
};
|
|
|
|
static inline bool i40e_client_is_registered(struct i40e_client *client)
|
|
{
|
|
return test_bit(__I40E_CLIENT_REGISTERED, &client->state);
|
|
}
|
|
|
|
/* used by clients */
|
|
int i40e_register_client(struct i40e_client *client);
|
|
int i40e_unregister_client(struct i40e_client *client);
|
|
|
|
#endif /* _I40E_CLIENT_H_ */
|