diff --git a/drivers/net/qede/base/ecore_sriov.c b/drivers/net/qede/base/ecore_sriov.c index 40671dda96..b85055b8d3 100644 --- a/drivers/net/qede/base/ecore_sriov.c +++ b/drivers/net/qede/base/ecore_sriov.c @@ -599,14 +599,30 @@ enum _ecore_status_t ecore_iov_hw_info(struct ecore_hwfn *p_hwfn) return ECORE_SUCCESS; } - /* 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 be later + * to diffrentiate between the two. */ - p_dev->p_iov_info->first_vf_in_pf = p_hwfn->p_dev->p_iov_info->offset + - p_hwfn->abs_pf_id - 16; - if (ECORE_PATH_ID(p_hwfn)) - p_dev->p_iov_info->first_vf_in_pf -= MAX_NUM_VFS_BB; + + if (p_hwfn->p_dev->p_iov_info->offset < (256 - p_hwfn->abs_pf_id)) { + u32 first = p_hwfn->p_dev->p_iov_info->offset + + p_hwfn->abs_pf_id - 16; + + p_dev->p_iov_info->first_vf_in_pf = first; + + if (ECORE_PATH_ID(p_hwfn)) + p_dev->p_iov_info->first_vf_in_pf -= MAX_NUM_VFS_BB; + } else { + u32 first = p_hwfn->p_dev->p_iov_info->offset + + p_hwfn->abs_pf_id - 256; + + p_dev->p_iov_info->first_vf_in_pf = first; + } DP_VERBOSE(p_hwfn, ECORE_MSG_IOV, "First VF in hwfn 0x%08x\n",