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3c7624d8fc
linux_dsm_epyc7002/drivers/net/ethernet/hisilicon/hns3/hnae3.h
Xi Wang 3c7624d8fc net: hns3: Fix for hns3 module is loaded multiple times problem 
If the hns3 driver has been built into kernel and then loaded with
the same driver which built as KLM, it may trigger an error like
below:

[   20.009555] hns3: Hisilicon Ethernet Network Driver for Hip08 Family - version
[   20.016789] hns3: Copyright (c) 2017 Huawei Corporation.
[   20.022100] Error: Driver 'hns3' is already registered, aborting...
[   23.517397] Unable to handle kernel NULL pointer dereference at virtual address 00000000
...
[   23.691583] Process insmod (pid: 1982, stack limit = 0x00000000cd5f21cb)
[   23.698270] Call trace:
[   23.700705]  __list_del_entry_valid+0x2c/0xd8
[   23.705049]  hnae3_unregister_client+0x68/0xa8
[   23.709487]  hns3_init_module+0x98/0x1000 [hns3]
[   23.714093]  do_one_initcall+0x5c/0x170
[   23.717918]  do_init_module+0x64/0x1f4
[   23.721654]  load_module+0x1d14/0x24b0
[   23.725390]  SyS_init_module+0x158/0x208
[   23.729300]  el0_svc_naked+0x30/0x34

This patch fixes it by adding module version info.

Fixes: 38caee9d3e ("net: hns3: Add support of the HNAE3 framework")
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-20 18:53:59 -04:00

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/*
* Copyright (c) 2016-2017 Hisilicon Limited.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __HNAE3_H
#define __HNAE3_H
/* Names used in this framework:
* ae handle (handle):
* a set of queues provided by AE
* ring buffer queue (rbq):
* the channel between upper layer and the AE, can do tx and rx
* ring:
* a tx or rx channel within a rbq
* ring description (desc):
* an element in the ring with packet information
* buffer:
* a memory region referred by desc with the full packet payload
*
* "num" means a static number set as a parameter, "count" mean a dynamic
* number set while running
* "cb" means control block
*/
#include <linux/acpi.h>
#include <linux/dcbnl.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/types.h>
#define HNAE3_MOD_VERSION "1.0"
/* Device IDs */
#define HNAE3_DEV_ID_GE 0xA220
#define HNAE3_DEV_ID_25GE 0xA221
#define HNAE3_DEV_ID_25GE_RDMA 0xA222
#define HNAE3_DEV_ID_25GE_RDMA_MACSEC 0xA223
#define HNAE3_DEV_ID_50GE_RDMA 0xA224
#define HNAE3_DEV_ID_50GE_RDMA_MACSEC 0xA225
#define HNAE3_DEV_ID_100G_RDMA_MACSEC 0xA226
#define HNAE3_DEV_ID_100G_VF 0xA22E
#define HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF 0xA22F
#define HNAE3_CLASS_NAME_SIZE 16
#define HNAE3_DEV_INITED_B 0x0
#define HNAE3_DEV_SUPPORT_ROCE_B 0x1
#define HNAE3_DEV_SUPPORT_DCB_B 0x2
#define HNAE3_CLIENT_INITED_B 0x3
#define HNAE3_DEV_SUPPORT_ROCE_DCB_BITS (BIT(HNAE3_DEV_SUPPORT_DCB_B) |\
BIT(HNAE3_DEV_SUPPORT_ROCE_B))
#define hnae3_dev_roce_supported(hdev) \
hnae_get_bit(hdev->ae_dev->flag, HNAE3_DEV_SUPPORT_ROCE_B)
#define hnae3_dev_dcb_supported(hdev) \
hnae_get_bit(hdev->ae_dev->flag, HNAE3_DEV_SUPPORT_DCB_B)
#define ring_ptr_move_fw(ring, p) \
((ring)->p = ((ring)->p + 1) % (ring)->desc_num)
#define ring_ptr_move_bw(ring, p) \
((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num)
enum hns_desc_type {
DESC_TYPE_SKB,
DESC_TYPE_PAGE,
};
struct hnae3_handle;
struct hnae3_queue {
void __iomem *io_base;
struct hnae3_ae_algo *ae_algo;
struct hnae3_handle *handle;
int tqp_index; /* index in a handle */
u32 buf_size; /* size for hnae_desc->addr, preset by AE */
u16 desc_num; /* total number of desc */
};
/*hnae3 loop mode*/
enum hnae3_loop {
HNAE3_MAC_INTER_LOOP_MAC,
HNAE3_MAC_INTER_LOOP_SERDES,
HNAE3_MAC_INTER_LOOP_PHY,
HNAE3_MAC_LOOP_NONE,
};
enum hnae3_client_type {
HNAE3_CLIENT_KNIC,
HNAE3_CLIENT_UNIC,
HNAE3_CLIENT_ROCE,
};
enum hnae3_dev_type {
HNAE3_DEV_KNIC,
HNAE3_DEV_UNIC,
};
/* mac media type */
enum hnae3_media_type {
HNAE3_MEDIA_TYPE_UNKNOWN,
HNAE3_MEDIA_TYPE_FIBER,
HNAE3_MEDIA_TYPE_COPPER,
HNAE3_MEDIA_TYPE_BACKPLANE,
};
enum hnae3_reset_notify_type {
HNAE3_UP_CLIENT,
HNAE3_DOWN_CLIENT,
HNAE3_INIT_CLIENT,
HNAE3_UNINIT_CLIENT,
};
enum hnae3_reset_type {
HNAE3_VF_RESET,
HNAE3_VF_FULL_RESET,
HNAE3_FUNC_RESET,
HNAE3_CORE_RESET,
HNAE3_GLOBAL_RESET,
HNAE3_IMP_RESET,
HNAE3_NONE_RESET,
};
struct hnae3_vector_info {
u8 __iomem *io_addr;
int vector;
};
#define HNAE3_RING_TYPE_B 0
#define HNAE3_RING_TYPE_TX 0
#define HNAE3_RING_TYPE_RX 1
#define HNAE3_RING_GL_IDX_S 0
#define HNAE3_RING_GL_IDX_M GENMASK(1, 0)
#define HNAE3_RING_GL_RX 0
#define HNAE3_RING_GL_TX 1
struct hnae3_ring_chain_node {
struct hnae3_ring_chain_node *next;
u32 tqp_index;
u32 flag;
u32 int_gl_idx;
};
#define HNAE3_IS_TX_RING(node) \
(((node)->flag & (1 << HNAE3_RING_TYPE_B)) == HNAE3_RING_TYPE_TX)
struct hnae3_client_ops {
int (*init_instance)(struct hnae3_handle *handle);
void (*uninit_instance)(struct hnae3_handle *handle, bool reset);
void (*link_status_change)(struct hnae3_handle *handle, bool state);
int (*setup_tc)(struct hnae3_handle *handle, u8 tc);
int (*reset_notify)(struct hnae3_handle *handle,
enum hnae3_reset_notify_type type);
};
#define HNAE3_CLIENT_NAME_LENGTH 16
struct hnae3_client {
char name[HNAE3_CLIENT_NAME_LENGTH];
u16 version;
unsigned long state;
enum hnae3_client_type type;
const struct hnae3_client_ops *ops;
struct list_head node;
};
struct hnae3_ae_dev {
struct pci_dev *pdev;
const struct hnae3_ae_ops *ops;
struct list_head node;
u32 flag;
enum hnae3_dev_type dev_type;
void *priv;
};
/* This struct defines the operation on the handle.
*
* init_ae_dev(): (mandatory)
* Get PF configure from pci_dev and initialize PF hardware
* uninit_ae_dev()
* Disable PF device and release PF resource
* register_client
* Register client to ae_dev
* unregister_client()
* Unregister client from ae_dev
* start()
* Enable the hardware
* stop()
* Disable the hardware
* get_status()
* Get the carrier state of the back channel of the handle, 1 for ok, 0 for
* non-ok
* get_ksettings_an_result()
* Get negotiation status,speed and duplex
* update_speed_duplex_h()
* Update hardware speed and duplex
* get_media_type()
* Get media type of MAC
* adjust_link()
* Adjust link status
* set_loopback()
* Set loopback
* set_promisc_mode
* Set promisc mode
* set_mtu()
* set mtu
* get_pauseparam()
* get tx and rx of pause frame use
* set_pauseparam()
* set tx and rx of pause frame use
* set_autoneg()
* set auto autonegotiation of pause frame use
* get_autoneg()
* get auto autonegotiation of pause frame use
* get_coalesce_usecs()
* get usecs to delay a TX interrupt after a packet is sent
* get_rx_max_coalesced_frames()
* get Maximum number of packets to be sent before a TX interrupt.
* set_coalesce_usecs()
* set usecs to delay a TX interrupt after a packet is sent
* set_coalesce_frames()
* set Maximum number of packets to be sent before a TX interrupt.
* get_mac_addr()
* get mac address
* set_mac_addr()
* set mac address
* add_uc_addr
* Add unicast addr to mac table
* rm_uc_addr
* Remove unicast addr from mac table
* set_mc_addr()
* Set multicast address
* add_mc_addr
* Add multicast address to mac table
* rm_mc_addr
* Remove multicast address from mac table
* update_stats()
* Update Old network device statistics
* get_ethtool_stats()
* Get ethtool network device statistics
* get_strings()
* Get a set of strings that describe the requested objects
* get_sset_count()
* Get number of strings that @get_strings will write
* update_led_status()
* Update the led status
* set_led_id()
* Set led id
* get_regs()
* Get regs dump
* get_regs_len()
* Get the len of the regs dump
* get_rss_key_size()
* Get rss key size
* get_rss_indir_size()
* Get rss indirection table size
* get_rss()
* Get rss table
* set_rss()
* Set rss table
* get_tc_size()
* Get tc size of handle
* get_vector()
* Get vector number and vector information
* put_vector()
* Put the vector in hdev
* map_ring_to_vector()
* Map rings to vector
* unmap_ring_from_vector()
* Unmap rings from vector
* reset_queue()
* Reset queue
* get_fw_version()
* Get firmware version
* get_mdix_mode()
* Get media typr of phy
* enable_vlan_filter()
* Enable vlan filter
* set_vlan_filter()
* Set vlan filter config of Ports
* set_vf_vlan_filter()
* Set vlan filter config of vf
* enable_hw_strip_rxvtag()
* Enable/disable hardware strip vlan tag of packets received
*/
struct hnae3_ae_ops {
int (*init_ae_dev)(struct hnae3_ae_dev *ae_dev);
void (*uninit_ae_dev)(struct hnae3_ae_dev *ae_dev);
int (*init_client_instance)(struct hnae3_client *client,
struct hnae3_ae_dev *ae_dev);
void (*uninit_client_instance)(struct hnae3_client *client,
struct hnae3_ae_dev *ae_dev);
int (*start)(struct hnae3_handle *handle);
void (*stop)(struct hnae3_handle *handle);
int (*get_status)(struct hnae3_handle *handle);
void (*get_ksettings_an_result)(struct hnae3_handle *handle,
u8 *auto_neg, u32 *speed, u8 *duplex);
int (*update_speed_duplex_h)(struct hnae3_handle *handle);
int (*cfg_mac_speed_dup_h)(struct hnae3_handle *handle, int speed,
u8 duplex);
void (*get_media_type)(struct hnae3_handle *handle, u8 *media_type);
void (*adjust_link)(struct hnae3_handle *handle, int speed, int duplex);
int (*set_loopback)(struct hnae3_handle *handle,
enum hnae3_loop loop_mode, bool en);
void (*set_promisc_mode)(struct hnae3_handle *handle, u32 en);
int (*set_mtu)(struct hnae3_handle *handle, int new_mtu);
void (*get_pauseparam)(struct hnae3_handle *handle,
u32 *auto_neg, u32 *rx_en, u32 *tx_en);
int (*set_pauseparam)(struct hnae3_handle *handle,
u32 auto_neg, u32 rx_en, u32 tx_en);
int (*set_autoneg)(struct hnae3_handle *handle, bool enable);
int (*get_autoneg)(struct hnae3_handle *handle);
void (*get_coalesce_usecs)(struct hnae3_handle *handle,
u32 *tx_usecs, u32 *rx_usecs);
void (*get_rx_max_coalesced_frames)(struct hnae3_handle *handle,
u32 *tx_frames, u32 *rx_frames);
int (*set_coalesce_usecs)(struct hnae3_handle *handle, u32 timeout);
int (*set_coalesce_frames)(struct hnae3_handle *handle,
u32 coalesce_frames);
void (*get_coalesce_range)(struct hnae3_handle *handle,
u32 *tx_frames_low, u32 *rx_frames_low,
u32 *tx_frames_high, u32 *rx_frames_high,
u32 *tx_usecs_low, u32 *rx_usecs_low,
u32 *tx_usecs_high, u32 *rx_usecs_high);
void (*get_mac_addr)(struct hnae3_handle *handle, u8 *p);
int (*set_mac_addr)(struct hnae3_handle *handle, void *p,
bool is_first);
int (*add_uc_addr)(struct hnae3_handle *handle,
const unsigned char *addr);
int (*rm_uc_addr)(struct hnae3_handle *handle,
const unsigned char *addr);
int (*set_mc_addr)(struct hnae3_handle *handle, void *addr);
int (*add_mc_addr)(struct hnae3_handle *handle,
const unsigned char *addr);
int (*rm_mc_addr)(struct hnae3_handle *handle,
const unsigned char *addr);
void (*set_tso_stats)(struct hnae3_handle *handle, int enable);
void (*update_stats)(struct hnae3_handle *handle,
struct net_device_stats *net_stats);
void (*get_stats)(struct hnae3_handle *handle, u64 *data);
void (*get_strings)(struct hnae3_handle *handle,
u32 stringset, u8 *data);
int (*get_sset_count)(struct hnae3_handle *handle, int stringset);
void (*get_regs)(struct hnae3_handle *handle, u32 *version,
void *data);
int (*get_regs_len)(struct hnae3_handle *handle);
u32 (*get_rss_key_size)(struct hnae3_handle *handle);
u32 (*get_rss_indir_size)(struct hnae3_handle *handle);
int (*get_rss)(struct hnae3_handle *handle, u32 *indir, u8 *key,
u8 *hfunc);
int (*set_rss)(struct hnae3_handle *handle, const u32 *indir,
const u8 *key, const u8 hfunc);
int (*set_rss_tuple)(struct hnae3_handle *handle,
struct ethtool_rxnfc *cmd);
int (*get_rss_tuple)(struct hnae3_handle *handle,
struct ethtool_rxnfc *cmd);
int (*get_tc_size)(struct hnae3_handle *handle);
int (*get_vector)(struct hnae3_handle *handle, u16 vector_num,
struct hnae3_vector_info *vector_info);
int (*put_vector)(struct hnae3_handle *handle, int vector_num);
int (*map_ring_to_vector)(struct hnae3_handle *handle,
int vector_num,
struct hnae3_ring_chain_node *vr_chain);
int (*unmap_ring_from_vector)(struct hnae3_handle *handle,
int vector_num,
struct hnae3_ring_chain_node *vr_chain);
void (*reset_queue)(struct hnae3_handle *handle, u16 queue_id);
u32 (*get_fw_version)(struct hnae3_handle *handle);
void (*get_mdix_mode)(struct hnae3_handle *handle,
u8 *tp_mdix_ctrl, u8 *tp_mdix);
void (*enable_vlan_filter)(struct hnae3_handle *handle, bool enable);
int (*set_vlan_filter)(struct hnae3_handle *handle, __be16 proto,
u16 vlan_id, bool is_kill);
int (*set_vf_vlan_filter)(struct hnae3_handle *handle, int vfid,
u16 vlan, u8 qos, __be16 proto);
int (*enable_hw_strip_rxvtag)(struct hnae3_handle *handle, bool enable);
void (*reset_event)(struct hnae3_handle *handle);
void (*get_channels)(struct hnae3_handle *handle,
struct ethtool_channels *ch);
void (*get_tqps_and_rss_info)(struct hnae3_handle *h,
u16 *free_tqps, u16 *max_rss_size);
int (*set_channels)(struct hnae3_handle *handle, u32 new_tqps_num);
void (*get_flowctrl_adv)(struct hnae3_handle *handle,
u32 *flowctrl_adv);
int (*set_led_id)(struct hnae3_handle *handle,
enum ethtool_phys_id_state status);
void (*get_link_mode)(struct hnae3_handle *handle,
unsigned long *supported,
unsigned long *advertising);
void (*get_port_type)(struct hnae3_handle *handle, u8 *port_type);
};
struct hnae3_dcb_ops {
/* IEEE 802.1Qaz std */
int (*ieee_getets)(struct hnae3_handle *, struct ieee_ets *);
int (*ieee_setets)(struct hnae3_handle *, struct ieee_ets *);
int (*ieee_getpfc)(struct hnae3_handle *, struct ieee_pfc *);
int (*ieee_setpfc)(struct hnae3_handle *, struct ieee_pfc *);
/* DCBX configuration */
u8 (*getdcbx)(struct hnae3_handle *);
u8 (*setdcbx)(struct hnae3_handle *, u8);
int (*map_update)(struct hnae3_handle *);
int (*setup_tc)(struct hnae3_handle *, u8, u8 *);
};
struct hnae3_ae_algo {
const struct hnae3_ae_ops *ops;
struct list_head node;
char name[HNAE3_CLASS_NAME_SIZE];
const struct pci_device_id *pdev_id_table;
};
#define HNAE3_INT_NAME_LEN (IFNAMSIZ + 16)
#define HNAE3_ITR_COUNTDOWN_START 100
struct hnae3_tc_info {
u16 tqp_offset; /* TQP offset from base TQP */
u16 tqp_count; /* Total TQPs */
u8 tc; /* TC index */
bool enable; /* If this TC is enable or not */
};
#define HNAE3_MAX_TC 8
#define HNAE3_MAX_USER_PRIO 8
struct hnae3_knic_private_info {
struct net_device *netdev; /* Set by KNIC client when init instance */
u16 rss_size; /* Allocated RSS queues */
u16 rx_buf_len;
u16 num_desc;
u8 num_tc; /* Total number of enabled TCs */
u8 prio_tc[HNAE3_MAX_USER_PRIO]; /* TC indexed by prio */
struct hnae3_tc_info tc_info[HNAE3_MAX_TC]; /* Idx of array is HW TC */
u16 num_tqps; /* total number of TQPs in this handle */
struct hnae3_queue **tqp; /* array base of all TQPs in this instance */
const struct hnae3_dcb_ops *dcb_ops;
u16 int_rl_setting;
};
struct hnae3_roce_private_info {
struct net_device *netdev;
void __iomem *roce_io_base;
int base_vector;
int num_vectors;
};
struct hnae3_unic_private_info {
struct net_device *netdev;
u16 rx_buf_len;
u16 num_desc;
u16 num_tqps; /* total number of tqps in this handle */
struct hnae3_queue **tqp; /* array base of all TQPs of this instance */
};
#define HNAE3_SUPPORT_MAC_LOOPBACK BIT(0)
#define HNAE3_SUPPORT_PHY_LOOPBACK BIT(1)
#define HNAE3_SUPPORT_SERDES_LOOPBACK BIT(2)
#define HNAE3_SUPPORT_VF BIT(3)
struct hnae3_handle {
struct hnae3_client *client;
struct pci_dev *pdev;
void *priv;
struct hnae3_ae_algo *ae_algo; /* the class who provides this handle */
u64 flags; /* Indicate the capabilities for this handle*/
unsigned long last_reset_time;
enum hnae3_reset_type reset_level;
union {
struct net_device *netdev; /* first member */
struct hnae3_knic_private_info kinfo;
struct hnae3_unic_private_info uinfo;
struct hnae3_roce_private_info rinfo;
};
u32 numa_node_mask; /* for multi-chip support */
};
#define hnae_set_field(origin, mask, shift, val) \
do { \
(origin) &= (~(mask)); \
(origin) |= ((val) << (shift)) & (mask); \
} while (0)
#define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift))
#define hnae_set_bit(origin, shift, val) \
hnae_set_field((origin), (0x1 << (shift)), (shift), (val))
#define hnae_get_bit(origin, shift) \
hnae_get_field((origin), (0x1 << (shift)), (shift))
void hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev);
void hnae3_unregister_ae_dev(struct hnae3_ae_dev *ae_dev);
void hnae3_unregister_ae_algo(struct hnae3_ae_algo *ae_algo);
void hnae3_register_ae_algo(struct hnae3_ae_algo *ae_algo);
void hnae3_unregister_client(struct hnae3_client *client);
int hnae3_register_client(struct hnae3_client *client);
#endif
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