| From a4319af0f9744ba5304797e3c9e85c9018f7a3d7 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Thu, 6 Jun 2024 11:15:19 +0300 |
| Subject: ntb: intel: Fix using link status DB's |
| |
| From: Nikita Shubin <n.shubin@yadro.com> |
| |
| [ Upstream commit 8144e9c8f30fb23bb736a5d24d5c9d46965563c4 ] |
| |
| Make sure we are not using DB's which were remapped for link status. |
| |
| Fixes: f6e51c354b60 ("ntb: intel: split out the gen3 code") |
| Signed-off-by: Nikita Shubin <n.shubin@yadro.com> |
| Reviewed-by: Dave Jiang <dave.jiang@intel.com> |
| Signed-off-by: Jon Mason <jdmason@kudzu.us> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| drivers/ntb/hw/intel/ntb_hw_gen3.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| diff --git a/drivers/ntb/hw/intel/ntb_hw_gen3.c b/drivers/ntb/hw/intel/ntb_hw_gen3.c |
| index ffcfc3e02c353..a5aa96a31f4a6 100644 |
| --- a/drivers/ntb/hw/intel/ntb_hw_gen3.c |
| +++ b/drivers/ntb/hw/intel/ntb_hw_gen3.c |
| @@ -215,6 +215,9 @@ static int gen3_init_ntb(struct intel_ntb_dev *ndev) |
| } |
| |
| ndev->db_valid_mask = BIT_ULL(ndev->db_count) - 1; |
| + /* Make sure we are not using DB's used for link status */ |
| + if (ndev->hwerr_flags & NTB_HWERR_MSIX_VECTOR32_BAD) |
| + ndev->db_valid_mask &= ~ndev->db_link_mask; |
| |
| ndev->reg->db_iowrite(ndev->db_valid_mask, |
| ndev->self_mmio + |
| -- |
| 2.39.5 |
| |
