From b7b863887a881e152602febf43715e366f714497 Mon Sep 17 00:00:00 2001 From: Yufeng Mo Date: Sat, 24 Jul 2021 15:43:42 +0800 Subject: [PATCH 052/283] net: hns3: split out hclgevf_cmd_send() mainline inclusion from mainline-v5.12-rc1-dontuse commit eb0faf32b86e208049b6432197bfeeeac8580fe1 category: feature bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8EMQV CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb0faf32b86e208049b6432197bfeeeac8580fe1 ---------------------------------------------------------------------- hclgevf_cmd_send() is bloated, so split it into separate functions for readability and maintainability. Signed-off-by: Yufeng Mo Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller Reviewed-by: Yongxin Li Signed-off-by: Junxin Chen Signed-off-by: Zheng Zengkai Signed-off-by: Xiaodong Li --- .../hisilicon/hns3/hns3vf/hclgevf_cmd.c | 141 ++++++++++-------- include/linux/ethtool.h | 2 - include/linux/phy.h | 1 - 3 files changed, 81 insertions(+), 63 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c index a09b63a031a5..9430334e1c22 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c @@ -197,6 +197,22 @@ struct vf_errcode { int common_errno; }; +static void hclgevf_cmd_copy_desc(struct hclgevf_hw *hw, + struct hclgevf_desc *desc, int num) +{ + struct hclgevf_desc *desc_to_use; + int handle = 0; + + while (handle < num) { + desc_to_use = &hw->cmq.csq.desc[hw->cmq.csq.next_to_use]; + *desc_to_use = desc[handle]; + (hw->cmq.csq.next_to_use)++; + if (hw->cmq.csq.next_to_use == hw->cmq.csq.desc_num) + hw->cmq.csq.next_to_use = 0; + handle++; + } +} + static int hclgevf_cmd_convert_err_code(u16 desc_ret) { struct vf_errcode hclgevf_cmd_errcode[] = { @@ -223,6 +239,66 @@ static int hclgevf_cmd_convert_err_code(u16 desc_ret) return -EIO; } +static int hclgevf_cmd_check_retval(struct hclgevf_hw *hw, + struct hclgevf_desc *desc, int num, int ntc) +{ + u16 opcode, desc_ret; + int handle; + + opcode = le16_to_cpu(desc[0].opcode); + for (handle = 0; handle < num; handle++) { + /* Get the result of hardware write back */ + desc[handle] = hw->cmq.csq.desc[ntc]; + ntc++; + if (ntc == hw->cmq.csq.desc_num) + ntc = 0; + } + if (likely(!hclgevf_is_special_opcode(opcode))) + desc_ret = le16_to_cpu(desc[num - 1].retval); + else + desc_ret = le16_to_cpu(desc[0].retval); + hw->cmq.last_status = desc_ret; + + return hclgevf_cmd_convert_err_code(desc_ret); +} + +static int hclgevf_cmd_check_result(struct hclgevf_hw *hw, + struct hclgevf_desc *desc, int num, int ntc) +{ + struct hclgevf_dev *hdev = (struct hclgevf_dev *)hw->hdev; + bool is_completed = false; + u32 timeout = 0; + int handle, ret; + + /* If the command is sync, wait for the firmware to write back, + * if multi descriptors to be sent, use the first one to check + */ + if (HCLGEVF_SEND_SYNC(le16_to_cpu(desc->flag))) { + do { + if (hclgevf_cmd_csq_done(hw)) { + is_completed = true; + break; + } + udelay(1); + timeout++; + } while (timeout < hw->cmq.tx_timeout); + } + + if (!is_completed) + ret = -EBADE; + else + ret = hclgevf_cmd_check_retval(hw, desc, num, ntc); + + /* Clean the command send queue */ + handle = hclgevf_cmd_csq_clean(hw); + if (handle < 0) + ret = handle; + else if (handle != num) + dev_warn(&hdev->pdev->dev, + "cleaned %d, need to clean %d\n", handle, num); + return ret; +} + /* hclgevf_cmd_send - send command to command queue * @hw: pointer to the hw struct * @desc: prefilled descriptor for describing the command @@ -235,13 +311,7 @@ int hclgevf_cmd_send(struct hclgevf_hw *hw, struct hclgevf_desc *desc, int num) { struct hclgevf_dev *hdev = (struct hclgevf_dev *)hw->hdev; struct hclgevf_cmq_ring *csq = &hw->cmq.csq; - struct hclgevf_desc *desc_to_use; - bool complete = false; - u32 timeout = 0; - int handle = 0; - int status = 0; - u16 retval; - u16 opcode; + int ret; int ntc; spin_lock_bh(&hw->cmq.csq.lock); @@ -265,67 +335,18 @@ int hclgevf_cmd_send(struct hclgevf_hw *hw, struct hclgevf_desc *desc, int num) * which will be use for hardware to write back */ ntc = hw->cmq.csq.next_to_use; - opcode = le16_to_cpu(desc[0].opcode); - while (handle < num) { - desc_to_use = &hw->cmq.csq.desc[hw->cmq.csq.next_to_use]; - *desc_to_use = desc[handle]; - (hw->cmq.csq.next_to_use)++; - if (hw->cmq.csq.next_to_use == hw->cmq.csq.desc_num) - hw->cmq.csq.next_to_use = 0; - handle++; - } + + hclgevf_cmd_copy_desc(hw, desc, num); /* Write to hardware */ hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_TAIL_REG, hw->cmq.csq.next_to_use); - /* If the command is sync, wait for the firmware to write back, - * if multi descriptors to be sent, use the first one to check - */ - if (HCLGEVF_SEND_SYNC(le16_to_cpu(desc->flag))) { - do { - if (hclgevf_cmd_csq_done(hw)) - break; - udelay(1); - timeout++; - } while (timeout < hw->cmq.tx_timeout); - } - - if (hclgevf_cmd_csq_done(hw)) { - complete = true; - handle = 0; - - while (handle < num) { - /* Get the result of hardware write back */ - desc_to_use = &hw->cmq.csq.desc[ntc]; - desc[handle] = *desc_to_use; - - if (likely(!hclgevf_is_special_opcode(opcode))) - retval = le16_to_cpu(desc[handle].retval); - else - retval = le16_to_cpu(desc[0].retval); - - status = hclgevf_cmd_convert_err_code(retval); - hw->cmq.last_status = (enum hclgevf_cmd_status)retval; - ntc++; - handle++; - if (ntc == hw->cmq.csq.desc_num) - ntc = 0; - } - } - - if (!complete) - status = -EBADE; - - /* Clean the command send queue */ - handle = hclgevf_cmd_csq_clean(hw); - if (handle != num) - dev_warn(&hdev->pdev->dev, - "cleaned %d, need to clean %d\n", handle, num); + ret = hclgevf_cmd_check_result(hw, desc, num, ntc); spin_unlock_bh(&hw->cmq.csq.lock); - return status; + return ret; } static void hclgevf_set_default_capability(struct hclgevf_dev *hdev) diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 65c244c2dc97..217f56d2462c 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -367,9 +367,7 @@ bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, * of the generic netdev features interface. */ struct ethtool_ops { -#ifndef __GENKSYMS__ u32 supported_coalesce_params; -#endif int (*get_settings)(struct net_device *, struct ethtool_cmd *); int (*set_settings)(struct net_device *, struct ethtool_cmd *); void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *); diff --git a/include/linux/phy.h b/include/linux/phy.h index 81532a61e995..d428623582e5 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -418,7 +418,6 @@ struct phy_device { unsigned autoneg:1; /* The most recently read link state */ unsigned link:1; - enum phy_state state; u32 dev_flags; -- 2.34.1