From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1D7001BC5C for ; Sun, 5 May 2024 13:46:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714916771; cv=none; b=nEs+ZpaJK6L/uHQ7RHq4SmI2JLbBBxzzX/8uIq3KATphrHHIDTCORvuvoNbzIa4JCorfZpzBj+6ZZnvV5nyJW9dJrxSxzpHc8RBQVaDJHRQgXshugxlhqFFwTYr2EcVgc/XVHgMgLCqrD/zv/Fh+6etRfyj4nj+q1yKZctQQeV8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714916771; c=relaxed/simple; bh=/KCXquXntFPjL9eMtDXljtelhz8E6pEjeNQXcFqm7hM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=IEFQOHHaslu5ZWGZXuttsK4G84pPvTVset4cLh4UMo1UhGUYYYKM4gXfD7qNuI4gnvu1xZUc9S1uswes0veWLlRZ9tiHVeb6yE1C50gFqM9xIYdEcRnsm/Bh1Jv/ovG9RyYmUTYJ5n6GymGikLYV+gm1+ChgPDuEsborSu+enJY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KsVKBY5h; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KsVKBY5h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26B10C113CC; Sun, 5 May 2024 13:46:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1714916770; bh=/KCXquXntFPjL9eMtDXljtelhz8E6pEjeNQXcFqm7hM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=KsVKBY5hAuQuRfgeFUJ9s1IQ+TZyn0/8gXnV93Z2tYT+4AAdQS0DWTHVAQrJYwVaK hHBmyqCqdYMbBB9X4+vaK5VBYxrm6Qwi8wQFC4PrFRYxkB+c6O/EEgDQhAR/365Osx WJqzeJPms25D/CnH9v7U54mCVtfRfU8uNHmOVptUvG2jhfPhRFvxqL27BNRkgMf0gW VC/G9d489RyvAihMyZUUk3TIni02uRrvvrj9N49Y19bfIQHPmtetpnpS9DKHw4XSih n7IS/05HBpbFH/z/Do4sooiLf9M6hNTQisgwPRPhLmk6OoEmd+woCtZnAyL7tAotD5 HYNYGVpkuRUyg== Date: Sun, 5 May 2024 16:46:06 +0300 From: Leon Romanovsky To: Selvin Xavier Cc: jgg@ziepe.ca, linux-rdma@vger.kernel.org, andrew.gospodarek@broadcom.com Subject: Re: [PATCH for-next 1/2] RDMA/bnxt_re: Allow MSN table capability check Message-ID: <20240505134606.GD68202@unreal> References: <1714795819-12543-1-git-send-email-selvin.xavier@broadcom.com> <1714795819-12543-2-git-send-email-selvin.xavier@broadcom.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1714795819-12543-2-git-send-email-selvin.xavier@broadcom.com> On Fri, May 03, 2024 at 09:10:18PM -0700, Selvin Xavier wrote: > FW reports the HW capability to use PSN table or MSN table and > driver/library need to select it based on this capability. > Use the new capability instead of the older capability check for HW > retransmission while handling the MSN/PSN table. > Also, Updated the FW interface structures to handle the new fields. > > Signed-off-by: Selvin Xavier > --- > drivers/infiniband/hw/bnxt_re/qplib_fp.c | 12 ++++++------ > drivers/infiniband/hw/bnxt_re/qplib_fp.h | 2 +- > drivers/infiniband/hw/bnxt_re/qplib_res.h | 6 ++++++ > drivers/infiniband/hw/bnxt_re/qplib_sp.c | 1 + > drivers/infiniband/hw/bnxt_re/qplib_sp.h | 1 + > drivers/infiniband/hw/bnxt_re/roce_hsi.h | 30 +++++++++++++++++++++++++++++- > 6 files changed, 44 insertions(+), 8 deletions(-) I have same comment as I gave in rdma-core PR. It seems like your change will cause to old devices to behave as they don't have PSN table anymore. Thanks > > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c > index 439d0c7..3c961a8 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c > +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c > @@ -984,7 +984,7 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) > u16 nsge; > > if (res->dattr) > - qp->dev_cap_flags = res->dattr->dev_cap_flags; > + qp->is_host_msn_tbl = _is_host_msn_table(res->dattr->dev_cap_flags2); > > sq->dbinfo.flags = 0; > bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req, > @@ -1002,7 +1002,7 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) > sizeof(struct sq_psn_search_ext) : > sizeof(struct sq_psn_search); > > - if (BNXT_RE_HW_RETX(qp->dev_cap_flags)) { > + if (qp->is_host_msn_tbl) { > psn_sz = sizeof(struct sq_msn_search); > qp->msn = 0; > } > @@ -1015,7 +1015,7 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) > hwq_attr.aux_stride = psn_sz; > hwq_attr.aux_depth = bnxt_qplib_set_sq_size(sq, qp->wqe_mode); > /* Update msn tbl size */ > - if (BNXT_RE_HW_RETX(qp->dev_cap_flags) && psn_sz) { > + if (qp->is_host_msn_tbl && psn_sz) { > hwq_attr.aux_depth = roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)); > qp->msn_tbl_sz = hwq_attr.aux_depth; > qp->msn = 0; > @@ -1636,7 +1636,7 @@ static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp, > if (!swq->psn_search) > return; > /* Handle MSN differently on cap flags */ > - if (BNXT_RE_HW_RETX(qp->dev_cap_flags)) { > + if (qp->is_host_msn_tbl) { > bnxt_qplib_fill_msn_search(qp, wqe, swq); > return; > } > @@ -1818,7 +1818,7 @@ int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp, > } > > swq = bnxt_qplib_get_swqe(sq, &wqe_idx); > - bnxt_qplib_pull_psn_buff(qp, sq, swq, BNXT_RE_HW_RETX(qp->dev_cap_flags)); > + bnxt_qplib_pull_psn_buff(qp, sq, swq, qp->is_host_msn_tbl); > > idx = 0; > swq->slot_idx = hwq->prod; > @@ -2008,7 +2008,7 @@ int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp, > rc = -EINVAL; > goto done; > } > - if (!BNXT_RE_HW_RETX(qp->dev_cap_flags) || msn_update) { > + if (!qp->is_host_msn_tbl || msn_update) { > swq->next_psn = sq->psn & BTH_PSN_MASK; > bnxt_qplib_fill_psn_search(qp, wqe, swq); > } > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h > index 7fd4506..5b8d097 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h > +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h > @@ -340,7 +340,7 @@ struct bnxt_qplib_qp { > struct list_head rq_flush; > u32 msn; > u32 msn_tbl_sz; > - u16 dev_cap_flags; > + u16 is_host_msn_tbl; > }; > > #define BNXT_QPLIB_MAX_CQE_ENTRY_SIZE sizeof(struct cq_base) > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h > index 61628f7..a0f78cd 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_res.h > +++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h > @@ -554,6 +554,12 @@ static inline bool _is_hw_retx_supported(u16 dev_cap_flags) > > #define BNXT_RE_HW_RETX(a) _is_hw_retx_supported((a)) > > +static inline bool _is_host_msn_table(u16 dev_cap_ext_flags2) > +{ > + return (dev_cap_ext_flags2 & CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_MASK) == > + CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_HOST_MSN_TABLE; > +} > + > static inline u8 bnxt_qplib_dbr_pacing_en(struct bnxt_qplib_chip_ctx *cctx) > { > return cctx->modes.dbr_pacing; > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c > index 8beeedd..9328db9 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c > +++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c > @@ -156,6 +156,7 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw, > (0x01 << RCFW_DBR_BASE_PAGE_SHIFT); > attr->max_sgid = BNXT_QPLIB_NUM_GIDS_SUPPORTED; > attr->dev_cap_flags = le16_to_cpu(sb->dev_cap_flags); > + attr->dev_cap_flags2 = le16_to_cpu(sb->dev_cap_ext_flags_2); > > bnxt_qplib_query_version(rcfw, attr->fw_ver); > > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.h b/drivers/infiniband/hw/bnxt_re/qplib_sp.h > index d33c78b..16a67d7 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_sp.h > +++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.h > @@ -72,6 +72,7 @@ struct bnxt_qplib_dev_attr { > u8 tqm_alloc_reqs[MAX_TQM_ALLOC_REQ]; > bool is_atomic; > u16 dev_cap_flags; > + u16 dev_cap_flags2; > u32 max_dpi; > }; > > diff --git a/drivers/infiniband/hw/bnxt_re/roce_hsi.h b/drivers/infiniband/hw/bnxt_re/roce_hsi.h > index 605c946..0425309 100644 > --- a/drivers/infiniband/hw/bnxt_re/roce_hsi.h > +++ b/drivers/infiniband/hw/bnxt_re/roce_hsi.h > @@ -2157,8 +2157,36 @@ struct creq_query_func_resp_sb { > __le32 tqm_alloc_reqs[12]; > __le32 max_dpi; > u8 max_sge_var_wqe; > - u8 reserved_8; > + u8 dev_cap_ext_flags; > + #define CREQ_QUERY_FUNC_RESP_SB_ATOMIC_OPS_NOT_SUPPORTED 0x1UL > + #define CREQ_QUERY_FUNC_RESP_SB_DRV_VERSION_RGTR_SUPPORTED 0x2UL > + #define CREQ_QUERY_FUNC_RESP_SB_CREATE_QP_BATCH_SUPPORTED 0x4UL > + #define CREQ_QUERY_FUNC_RESP_SB_DESTROY_QP_BATCH_SUPPORTED 0x8UL > + #define CREQ_QUERY_FUNC_RESP_SB_ROCE_STATS_EXT_CTX_SUPPORTED 0x10UL > + #define CREQ_QUERY_FUNC_RESP_SB_CREATE_SRQ_SGE_SUPPORTED 0x20UL > + #define CREQ_QUERY_FUNC_RESP_SB_FIXED_SIZE_WQE_DISABLED 0x40UL > + #define CREQ_QUERY_FUNC_RESP_SB_DCN_SUPPORTED 0x80UL > __le16 max_inline_data_var_wqe; > + __le32 start_qid; > + u8 max_msn_table_size; > + u8 reserved8_1; > + __le16 dev_cap_ext_flags_2; > + #define CREQ_QUERY_FUNC_RESP_SB_OPTIMIZE_MODIFY_QP_SUPPORTED 0x1UL > + #define CREQ_QUERY_FUNC_RESP_SB_CHANGE_UDP_SRC_PORT_WQE_SUPPORTED 0x2UL > + #define CREQ_QUERY_FUNC_RESP_SB_CQ_COALESCING_SUPPORTED 0x4UL > + #define CREQ_QUERY_FUNC_RESP_SB_MEMORY_REGION_RO_SUPPORTED 0x8UL > + #define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_MASK 0x30UL > + #define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_SFT 4 > + #define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_HOST_PSN_TABLE (0x0UL << 4) > + #define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_HOST_MSN_TABLE (0x1UL << 4) > + #define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_IQM_MSN_TABLE (0x2UL << 4) > + #define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_LAST \ > + CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_IQM_MSN_TABLE > + __le16 max_xp_qp_size; > + __le16 create_qp_batch_size; > + __le16 destroy_qp_batch_size; > + __le16 reserved16; > + __le64 reserved64; > }; > > /* cmdq_set_func_resources (size:448b/56B) */ > -- > 2.5.5 >