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hinic3: Add PF FLR wait and timeout handling

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Add a mechanism for PF to wait for the completion of FLR, ensuring
hardware state consistency after an FLR event.

Co-developed-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Fan Gong <gongfan1@huawei.com>
Link: https://patch.msgid.link/7a1b21426fd4274831733aca962eb209b806f4bd.1773062356.git.zhuyikai1@h-partners.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Fan Gong 2026-03-10 09:04:55 +08:00 committed by Paolo Abeni
parent 3d36efc280
commit 33cf53672b
1 changed files with 34 additions and 0 deletions
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34
drivers/net/ethernet/huawei/hinic3/hinic3_hw_comm.c
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@ -292,6 +292,32 @@ int hinic3_set_cmdq_depth(struct hinic3_hwdev *hwdev, u16 cmdq_depth)
return 0;
}
#define HINIC3_FLR_TIMEOUT 1000
static enum hinic3_wait_return hinic3_check_flr_finish_handler(void *priv_data)
{
struct hinic3_hwdev *hwdev = priv_data;
struct hinic3_hwif *hwif = hwdev->hwif;
enum hinic3_pf_status status;
if (!hwdev->chip_present_flag)
return HINIC3_WAIT_PROCESS_ERR;
status = hinic3_get_pf_status(hwif);
if (status == HINIC3_PF_STATUS_FLR_FINISH_FLAG) {
hinic3_set_pf_status(hwif, HINIC3_PF_STATUS_ACTIVE_FLAG);
return HINIC3_WAIT_PROCESS_CPL;
}
return HINIC3_WAIT_PROCESS_WAITING;
}
static int hinic3_wait_for_flr_finish(struct hinic3_hwdev *hwdev)
{
return hinic3_wait_for_timeout(hwdev, hinic3_check_flr_finish_handler,
HINIC3_FLR_TIMEOUT, 0xa * USEC_PER_MSEC);
}
#define HINIC3_WAIT_CMDQ_IDLE_TIMEOUT 5000
static enum hinic3_wait_return check_cmdq_stop_handler(void *priv_data)
@ -389,6 +415,14 @@ int hinic3_func_rx_tx_flush(struct hinic3_hwdev *hwdev)
ret = err;
}
if (HINIC3_FUNC_TYPE(hwdev) != HINIC3_FUNC_TYPE_VF) {
err = hinic3_wait_for_flr_finish(hwdev);
if (err) {
dev_warn(hwdev->dev, "Wait firmware FLR timeout\n");
ret = err;
}
}
hinic3_toggle_doorbell(hwif, ENABLE_DOORBELL);
err = hinic3_reinit_cmdq_ctxts(hwdev);