diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_sriov.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_sriov.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.c b/drivers/net/ethernet/qlogic/qed/qed_sriov.c index 253c2bbe1e4e..16f503c9b0af 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_sriov.c +++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.c @@ -557,14 +557,30 @@ int qed_iov_hw_info(struct qed_hwfn *p_hwfn) return 0; } - /* Calculate the first VF index - this is a bit tricky; Basically, - * VFs start at offset 16 relative to PF0, and 2nd engine VFs begin - * after the first engine's VFs. + /* First VF index based on offset is tricky: + * - If ARI is supported [likely], offset - (16 - pf_id) would + * provide the number for eng0. 2nd engine Vfs would begin + * after the first engine's VFs. + * - If !ARI, VFs would start on next device. + * so offset - (256 - pf_id) would provide the number. + * Utilize the fact that (256 - pf_id) is achieved only by later + * to diffrentiate between the two. */ - cdev->p_iov_info->first_vf_in_pf = p_hwfn->cdev->p_iov_info->offset + - p_hwfn->abs_pf_id - 16; - if (QED_PATH_ID(p_hwfn)) - cdev->p_iov_info->first_vf_in_pf -= MAX_NUM_VFS_BB; + + if (p_hwfn->cdev->p_iov_info->offset < (256 - p_hwfn->abs_pf_id)) { + u32 first = p_hwfn->cdev->p_iov_info->offset + + p_hwfn->abs_pf_id - 16; + + cdev->p_iov_info->first_vf_in_pf = first; + + if (QED_PATH_ID(p_hwfn)) + cdev->p_iov_info->first_vf_in_pf -= MAX_NUM_VFS_BB; + } else { + u32 first = p_hwfn->cdev->p_iov_info->offset + + p_hwfn->abs_pf_id - 256; + + cdev->p_iov_info->first_vf_in_pf = first; + } DP_VERBOSE(p_hwfn, QED_MSG_IOV, "First VF in hwfn 0x%08x\n", |