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net: hns3: adds support for reading module eeprom info 

This patch adds support for reading the optical module eeprom
info via "ethtool -m".

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yonglong Liu 2020-04-29 11:46:24 +08:00 committed by David S. Miller
parent c76c223016
commit cb10228d23
4 changed files with 196 additions and 0 deletions
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4
drivers/net/ethernet/hisilicon/hns3/hnae3.h
View File

@ -374,6 +374,8 @@ struct hnae3_ae_dev {
* Set the max tx rate of specified vf.
* set_vf_mac
* Configure the default MAC for specified VF
* get_module_eeprom
* Get the optical module eeprom info.
*/
struct hnae3_ae_ops {
int (*init_ae_dev)(struct hnae3_ae_dev *ae_dev);
@ -548,6 +550,8 @@ struct hnae3_ae_ops {
int (*set_vf_rate)(struct hnae3_handle *handle, int vf,
int min_tx_rate, int max_tx_rate, bool force);
int (*set_vf_mac)(struct hnae3_handle *handle, int vf, u8 *p);
int (*get_module_eeprom)(struct hnae3_handle *handle, u32 offset,
u32 len, u8 *data);
};
struct hnae3_dcb_ops {

75
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
View File

@ -4,6 +4,7 @@
#include <linux/etherdevice.h>
#include <linux/string.h>
#include <linux/phy.h>
#include <linux/sfp.h>
#include "hns3_enet.h"
@ -12,6 +13,11 @@ struct hns3_stats {
int stats_offset;
};
struct hns3_sfp_type {
u8 type;
u8 ext_type;
};
/* tqp related stats */
#define HNS3_TQP_STAT(_string, _member) { \
.stats_string = _string, \
@ -1386,6 +1392,73 @@ static int hns3_set_fecparam(struct net_device *netdev,
return ops->set_fec(handle, fec_mode);
}
static int hns3_get_module_info(struct net_device *netdev,
struct ethtool_modinfo *modinfo)
{
#define HNS3_SFF_8636_V1_3 0x03
struct hnae3_handle *handle = hns3_get_handle(netdev);
const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
struct hns3_sfp_type sfp_type;
int ret;
if (handle->pdev->revision == 0x20 || !ops->get_module_eeprom)
return -EOPNOTSUPP;
memset(&sfp_type, 0, sizeof(sfp_type));
ret = ops->get_module_eeprom(handle, 0, sizeof(sfp_type) / sizeof(u8),
(u8 *)&sfp_type);
if (ret)
return ret;
switch (sfp_type.type) {
case SFF8024_ID_SFP:
modinfo->type = ETH_MODULE_SFF_8472;
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
break;
case SFF8024_ID_QSFP_8438:
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;
break;
case SFF8024_ID_QSFP_8436_8636:
if (sfp_type.ext_type < HNS3_SFF_8636_V1_3) {
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;
} else {
modinfo->type = ETH_MODULE_SFF_8636;
modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
}
break;
case SFF8024_ID_QSFP28_8636:
modinfo->type = ETH_MODULE_SFF_8636;
modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
break;
default:
netdev_err(netdev, "Optical module unknown: %#x\n",
sfp_type.type);
return -EINVAL;
}
return 0;
}
static int hns3_get_module_eeprom(struct net_device *netdev,
struct ethtool_eeprom *ee, u8 *data)
{
struct hnae3_handle *handle = hns3_get_handle(netdev);
const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
if (handle->pdev->revision == 0x20 || !ops->get_module_eeprom)
return -EOPNOTSUPP;
if (!ee->len)
return -EINVAL;
memset(data, 0, ee->len);
return ops->get_module_eeprom(handle, ee->offset, ee->len, data);
}
#define HNS3_ETHTOOL_COALESCE (ETHTOOL_COALESCE_USECS | \
ETHTOOL_COALESCE_USE_ADAPTIVE | \
ETHTOOL_COALESCE_RX_USECS_HIGH | \
@ -1449,6 +1522,8 @@ static const struct ethtool_ops hns3_ethtool_ops = {
.set_msglevel = hns3_set_msglevel,
.get_fecparam = hns3_get_fecparam,
.set_fecparam = hns3_set_fecparam,
.get_module_info = hns3_get_module_info,
.get_module_eeprom = hns3_get_module_eeprom,
};
void hns3_ethtool_set_ops(struct net_device *netdev)

15
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
View File

@ -270,6 +270,8 @@ enum hclge_opcode_type {
HCLGE_OPC_M7_COMPAT_CFG = 0x701A,
/* SFP command */
HCLGE_OPC_GET_SFP_EEPROM = 0x7100,
HCLGE_OPC_GET_SFP_EXIST = 0x7101,
HCLGE_OPC_GET_SFP_INFO = 0x7104,
/* Error INT commands */
@ -1054,6 +1056,19 @@ struct hclge_firmware_compat_cmd {
u8 rsv[20];
};
#define HCLGE_SFP_INFO_CMD_NUM 6
#define HCLGE_SFP_INFO_BD0_LEN 20
#define HCLGE_SFP_INFO_BDX_LEN 24
#define HCLGE_SFP_INFO_MAX_LEN \
(HCLGE_SFP_INFO_BD0_LEN + \
(HCLGE_SFP_INFO_CMD_NUM - 1) * HCLGE_SFP_INFO_BDX_LEN)
struct hclge_sfp_info_bd0_cmd {
__le16 offset;
__le16 read_len;
u8 data[HCLGE_SFP_INFO_BD0_LEN];
};
int hclge_cmd_init(struct hclge_dev *hdev);
static inline void hclge_write_reg(void __iomem *base, u32 reg, u32 value)
{

102
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
View File

@ -11119,6 +11119,107 @@ static void hclge_sync_promisc_mode(struct hclge_dev *hdev)
}
}
static bool hclge_module_existed(struct hclge_dev *hdev)
{
struct hclge_desc desc;
u32 existed;
int ret;
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_GET_SFP_EXIST, true);
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to get SFP exist state, ret = %d\n", ret);
return false;
}
existed = le32_to_cpu(desc.data[0]);
return existed != 0;
}
/* need 6 bds(total 140 bytes) in one reading
* return the number of bytes actually read, 0 means read failed.
*/
static u16 hclge_get_sfp_eeprom_info(struct hclge_dev *hdev, u32 offset,
u32 len, u8 *data)
{
struct hclge_desc desc[HCLGE_SFP_INFO_CMD_NUM];
struct hclge_sfp_info_bd0_cmd *sfp_info_bd0;
u16 read_len;
u16 copy_len;
int ret;
int i;
/* setup all 6 bds to read module eeprom info. */
for (i = 0; i < HCLGE_SFP_INFO_CMD_NUM; i++) {
hclge_cmd_setup_basic_desc(&desc[i], HCLGE_OPC_GET_SFP_EEPROM,
true);
/* bd0~bd4 need next flag */
if (i < HCLGE_SFP_INFO_CMD_NUM - 1)
desc[i].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
}
/* setup bd0, this bd contains offset and read length. */
sfp_info_bd0 = (struct hclge_sfp_info_bd0_cmd *)desc[0].data;
sfp_info_bd0->offset = cpu_to_le16((u16)offset);
read_len = min_t(u16, len, HCLGE_SFP_INFO_MAX_LEN);
sfp_info_bd0->read_len = cpu_to_le16(read_len);
ret = hclge_cmd_send(&hdev->hw, desc, i);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to get SFP eeprom info, ret = %d\n", ret);
return 0;
}
/* copy sfp info from bd0 to out buffer. */
copy_len = min_t(u16, len, HCLGE_SFP_INFO_BD0_LEN);
memcpy(data, sfp_info_bd0->data, copy_len);
read_len = copy_len;
/* copy sfp info from bd1~bd5 to out buffer if needed. */
for (i = 1; i < HCLGE_SFP_INFO_CMD_NUM; i++) {
if (read_len >= len)
return read_len;
copy_len = min_t(u16, len - read_len, HCLGE_SFP_INFO_BDX_LEN);
memcpy(data + read_len, desc[i].data, copy_len);
read_len += copy_len;
}
return read_len;
}
static int hclge_get_module_eeprom(struct hnae3_handle *handle, u32 offset,
u32 len, u8 *data)
{
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
u32 read_len = 0;
u16 data_len;
if (hdev->hw.mac.media_type != HNAE3_MEDIA_TYPE_FIBER)
return -EOPNOTSUPP;
if (!hclge_module_existed(hdev))
return -ENXIO;
while (read_len < len) {
data_len = hclge_get_sfp_eeprom_info(hdev,
offset + read_len,
len - read_len,
data + read_len);
if (!data_len)
return -EIO;
read_len += data_len;
}
return 0;
}
static const struct hnae3_ae_ops hclge_ops = {
.init_ae_dev = hclge_init_ae_dev,
.uninit_ae_dev = hclge_uninit_ae_dev,
@ -11211,6 +11312,7 @@ static const struct hnae3_ae_ops hclge_ops = {
.set_vf_trust = hclge_set_vf_trust,
.set_vf_rate = hclge_set_vf_rate,
.set_vf_mac = hclge_set_vf_mac,
.get_module_eeprom = hclge_get_module_eeprom,
};
static struct hnae3_ae_algo ae_algo = {