From 64515dc899df898991b2b7e56f69f56f014ea888 Mon Sep 17 00:00:00 2001 From: Tomer Tayar Date: Mon, 28 Jan 2019 19:27:55 +0200 Subject: qed: Add infrastructure for error detection and recovery This patch adds the detection and handling of a parity error ("process kill event"), including the update of the protocol drivers, and the prevention of any HW access that will lead to device access towards the host while recovery is in progress. It also provides the means for the protocol drivers to trigger a recovery process on their decision. Signed-off-by: Tomer Tayar Signed-off-by: Ariel Elior Signed-off-by: Michal Kalderon Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_hw.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/net/ethernet/qlogic/qed/qed_hw.c') diff --git a/drivers/net/ethernet/qlogic/qed/qed_hw.c b/drivers/net/ethernet/qlogic/qed/qed_hw.c index 70504dcf4087..72ec1c6bdf70 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_hw.c +++ b/drivers/net/ethernet/qlogic/qed/qed_hw.c @@ -703,6 +703,17 @@ static int qed_dmae_execute_command(struct qed_hwfn *p_hwfn, int qed_status = 0; u32 offset = 0; + if (p_hwfn->cdev->recov_in_prog) { + DP_VERBOSE(p_hwfn, + NETIF_MSG_HW, + "Recovery is in progress. Avoid DMAE transaction [{src: addr 0x%llx, type %d}, {dst: addr 0x%llx, type %d}, size %d].\n", + src_addr, src_type, dst_addr, dst_type, + size_in_dwords); + + /* Let the flow complete w/o any error handling */ + return 0; + } + qed_dmae_opcode(p_hwfn, (src_type == QED_DMAE_ADDRESS_GRC), (dst_type == QED_DMAE_ADDRESS_GRC), -- cgit