From patchwork Thu Nov 21 14:15:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gal Pressman X-Patchwork-Id: 11256325 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A55C214C0 for ; Thu, 21 Nov 2019 14:15:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7D3812071C for ; Thu, 21 Nov 2019 14:15:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="s7W1p0a3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726983AbfKUOPb (ORCPT ); Thu, 21 Nov 2019 09:15:31 -0500 Received: from smtp-fw-9101.amazon.com ([207.171.184.25]:29156 "EHLO smtp-fw-9101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726852AbfKUOPa (ORCPT ); Thu, 21 Nov 2019 09:15:30 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1574345729; x=1605881729; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LOpbCiNbMzKA8sBSWqUck70Q10ULzfBCb4dDUM4FRJ0=; b=s7W1p0a3+6+TkDIas9M/Be5PIjHAyLC3HqpxfOXtpCFJ3j/HWpMfQxfC FMmVxa3lyg8XZ0y22rdwHBBwxk9xHlFKvp9tr/if1aPF3WpJ7+0Ks7Uzf 2G21urDeaBaxDAno+UFwGCclFfCvWAfAjps9q9SSaji5BDxNaanocorp+ o=; IronPort-SDR: 3Ndn06UURtIN01LvKT1cyGreyf6X5xKRN3ef8rkG25UPpcuH+nXirtsexBjWDcb4XWZ3FFGF/6 m4pVi+ZGQiSA== X-IronPort-AV: E=Sophos;i="5.69,226,1571702400"; d="scan'208";a="647611" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-2b-a7fdc47a.us-west-2.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9101.sea19.amazon.com with ESMTP; 21 Nov 2019 14:15:20 +0000 Received: from EX13MTAUEA001.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan2.pdx.amazon.com [10.170.41.162]) by email-inbound-relay-2b-a7fdc47a.us-west-2.amazon.com (Postfix) with ESMTPS id C1C40C5A0F; Thu, 21 Nov 2019 14:15:19 +0000 (UTC) Received: from EX13D13EUB002.ant.amazon.com (10.43.166.205) by EX13MTAUEA001.ant.amazon.com (10.43.61.82) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 21 Nov 2019 14:15:19 +0000 Received: from EX13MTAUEB001.ant.amazon.com (10.43.60.96) by EX13D13EUB002.ant.amazon.com (10.43.166.205) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 21 Nov 2019 14:15:18 +0000 Received: from 8c85908914bf.ant.amazon.com (10.218.69.146) by mail-relay.amazon.com (10.43.60.129) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Thu, 21 Nov 2019 14:15:16 +0000 From: Gal Pressman To: Jason Gunthorpe , Doug Ledford CC: , Alexander Matushevsky , Gal Pressman , Daniel Kranzdorf , Yossi Leybovich Subject: [PATCH for-next v2 1/3] RDMA/efa: Store network attributes in device attributes Date: Thu, 21 Nov 2019 16:15:07 +0200 Message-ID: <20191121141509.59297-2-galpress@amazon.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191121141509.59297-1-galpress@amazon.com> References: <20191121141509.59297-1-galpress@amazon.com> MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org There's no reason to separate the network attributes from all other device attributes. Embed the fields inside the device attributes and query them all in one function. Reviewed-by: Daniel Kranzdorf Reviewed-by: Yossi Leybovich Signed-off-by: Gal Pressman --- drivers/infiniband/hw/efa/efa.h | 2 -- drivers/infiniband/hw/efa/efa_com_cmd.c | 34 +++++++++---------------- drivers/infiniband/hw/efa/efa_com_cmd.h | 9 ++----- drivers/infiniband/hw/efa/efa_main.c | 16 ------------ drivers/infiniband/hw/efa/efa_verbs.c | 8 +++--- 5 files changed, 18 insertions(+), 51 deletions(-) diff --git a/drivers/infiniband/hw/efa/efa.h b/drivers/infiniband/hw/efa/efa.h index 2bda07078b97..aa7396a1588a 100644 --- a/drivers/infiniband/hw/efa/efa.h +++ b/drivers/infiniband/hw/efa/efa.h @@ -60,8 +60,6 @@ struct efa_dev { u64 mem_bar_len; u64 db_bar_addr; u64 db_bar_len; - u8 addr[EFA_GID_SIZE]; - u32 mtu; int admin_msix_vector_idx; struct efa_irq admin_irq; diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.c b/drivers/infiniband/hw/efa/efa_com_cmd.c index c079f1332082..4713c2756ad3 100644 --- a/drivers/infiniband/hw/efa/efa_com_cmd.c +++ b/drivers/infiniband/hw/efa/efa_com_cmd.c @@ -423,28 +423,6 @@ static int efa_com_get_feature(struct efa_com_dev *edev, return efa_com_get_feature_ex(edev, get_resp, feature_id, 0, 0); } -int efa_com_get_network_attr(struct efa_com_dev *edev, - struct efa_com_get_network_attr_result *result) -{ - struct efa_admin_get_feature_resp resp; - int err; - - err = efa_com_get_feature(edev, &resp, - EFA_ADMIN_NETWORK_ATTR); - if (err) { - ibdev_err_ratelimited(edev->efa_dev, - "Failed to get network attributes %d\n", - err); - return err; - } - - memcpy(result->addr, resp.u.network_attr.addr, - sizeof(resp.u.network_attr.addr)); - result->mtu = resp.u.network_attr.mtu; - - return 0; -} - int efa_com_get_device_attr(struct efa_com_dev *edev, struct efa_com_get_device_attr_result *result) { @@ -501,6 +479,18 @@ int efa_com_get_device_attr(struct efa_com_dev *edev, result->max_llq_size = resp.u.queue_attr.max_llq_size; result->sub_cqs_per_cq = resp.u.queue_attr.sub_cqs_per_cq; + err = efa_com_get_feature(edev, &resp, EFA_ADMIN_NETWORK_ATTR); + if (err) { + ibdev_err_ratelimited(edev->efa_dev, + "Failed to get network attributes %d\n", + err); + return err; + } + + memcpy(result->addr, resp.u.network_attr.addr, + sizeof(resp.u.network_attr.addr)); + result->mtu = resp.u.network_attr.mtu; + return 0; } diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.h b/drivers/infiniband/hw/efa/efa_com_cmd.h index 7f6c13052f49..6134d13ecc6f 100644 --- a/drivers/infiniband/hw/efa/efa_com_cmd.h +++ b/drivers/infiniband/hw/efa/efa_com_cmd.h @@ -100,14 +100,11 @@ struct efa_com_destroy_ah_params { u16 pdn; }; -struct efa_com_get_network_attr_result { - u8 addr[EFA_GID_SIZE]; - u32 mtu; -}; - struct efa_com_get_device_attr_result { + u8 addr[EFA_GID_SIZE]; u64 page_size_cap; u64 max_mr_pages; + u32 mtu; u32 fw_version; u32 admin_api_version; u32 device_version; @@ -271,8 +268,6 @@ int efa_com_create_ah(struct efa_com_dev *edev, struct efa_com_create_ah_result *result); int efa_com_destroy_ah(struct efa_com_dev *edev, struct efa_com_destroy_ah_params *params); -int efa_com_get_network_attr(struct efa_com_dev *edev, - struct efa_com_get_network_attr_result *result); int efa_com_get_device_attr(struct efa_com_dev *edev, struct efa_com_get_device_attr_result *result); int efa_com_get_hw_hints(struct efa_com_dev *edev, diff --git a/drivers/infiniband/hw/efa/efa_main.c b/drivers/infiniband/hw/efa/efa_main.c index 0e3050d01b75..faf3ff1bca2a 100644 --- a/drivers/infiniband/hw/efa/efa_main.c +++ b/drivers/infiniband/hw/efa/efa_main.c @@ -30,15 +30,6 @@ MODULE_DEVICE_TABLE(pci, efa_pci_tbl); (BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \ BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE)) -static void efa_update_network_attr(struct efa_dev *dev, - struct efa_com_get_network_attr_result *network_attr) -{ - memcpy(dev->addr, network_attr->addr, sizeof(network_attr->addr)); - dev->mtu = network_attr->mtu; - - dev_dbg(&dev->pdev->dev, "Full address %pI6\n", dev->addr); -} - /* This handler will called for unknown event group or unimplemented handlers */ static void unimplemented_aenq_handler(void *data, struct efa_admin_aenq_entry *aenq_e) @@ -234,7 +225,6 @@ static const struct ib_device_ops efa_dev_ops = { static int efa_ib_device_add(struct efa_dev *dev) { - struct efa_com_get_network_attr_result network_attr; struct efa_com_get_hw_hints_result hw_hints; struct pci_dev *pdev = dev->pdev; int err; @@ -250,12 +240,6 @@ static int efa_ib_device_add(struct efa_dev *dev) if (err) return err; - err = efa_com_get_network_attr(&dev->edev, &network_attr); - if (err) - goto err_release_doorbell_bar; - - efa_update_network_attr(dev, &network_attr); - err = efa_com_get_hw_hints(&dev->edev, &hw_hints); if (err) goto err_release_doorbell_bar; diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c index 657baa63faec..e1f1c1495da1 100644 --- a/drivers/infiniband/hw/efa/efa_verbs.c +++ b/drivers/infiniband/hw/efa/efa_verbs.c @@ -232,9 +232,9 @@ int efa_query_port(struct ib_device *ibdev, u8 port, props->pkey_tbl_len = 1; props->active_speed = IB_SPEED_EDR; props->active_width = IB_WIDTH_4X; - props->max_mtu = ib_mtu_int_to_enum(dev->mtu); - props->active_mtu = ib_mtu_int_to_enum(dev->mtu); - props->max_msg_sz = dev->mtu; + props->max_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu); + props->active_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu); + props->max_msg_sz = dev->dev_attr.mtu; props->max_vl_num = 1; return 0; @@ -295,7 +295,7 @@ int efa_query_gid(struct ib_device *ibdev, u8 port, int index, { struct efa_dev *dev = to_edev(ibdev); - memcpy(gid->raw, dev->addr, sizeof(dev->addr)); + memcpy(gid->raw, dev->dev_attr.addr, sizeof(dev->dev_attr.addr)); return 0; } From patchwork Thu Nov 21 14:15:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gal Pressman X-Patchwork-Id: 11256331 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 31DE26C1 for ; Thu, 21 Nov 2019 14:15:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0948B2071C for ; Thu, 21 Nov 2019 14:15:39 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Thu, 21 Nov 2019 14:15:18 +0000 From: Gal Pressman To: Jason Gunthorpe , Doug Ledford CC: , Alexander Matushevsky , Daniel Kranzdorf , Yossi Leybovich , Gal Pressman Subject: [PATCH for-next v2 2/3] RDMA/efa: Support remote read access in MR registration Date: Thu, 21 Nov 2019 16:15:08 +0200 Message-ID: <20191121141509.59297-3-galpress@amazon.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191121141509.59297-1-galpress@amazon.com> References: <20191121141509.59297-1-galpress@amazon.com> MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Daniel Kranzdorf Enable remote read access for memory regions in order to support RDMA operations. Signed-off-by: Daniel Kranzdorf Reviewed-by: Yossi Leybovich Signed-off-by: Gal Pressman --- drivers/infiniband/hw/efa/efa_admin_cmds_defs.h | 12 +++++++++--- drivers/infiniband/hw/efa/efa_com_cmd.c | 3 +-- drivers/infiniband/hw/efa/efa_com_cmd.h | 7 +------ drivers/infiniband/hw/efa/efa_verbs.c | 5 +++-- 4 files changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h index 2be0469d545f..7fa9d532db61 100644 --- a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h +++ b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h @@ -362,9 +362,13 @@ struct efa_admin_reg_mr_cmd { /* * permissions - * 0 : local_write_enable - Write permissions: value - * of 1 needed for RQ buffers and for RDMA write - * 7:1 : reserved1 - remote access flags, etc + * 0 : local_write_enable - Local write permissions: + * must be set for RQ buffers and buffers posted for + * RDMA Read requests + * 1 : reserved1 - MBZ + * 2 : remote_read_enable - Remote read permissions: + * must be set to enable RDMA read from the region + * 7:3 : reserved2 - MBZ */ u8 permissions; @@ -780,6 +784,8 @@ struct efa_admin_mmio_req_read_less_resp { #define EFA_ADMIN_REG_MR_CMD_MEM_ADDR_PHY_MODE_EN_SHIFT 7 #define EFA_ADMIN_REG_MR_CMD_MEM_ADDR_PHY_MODE_EN_MASK BIT(7) #define EFA_ADMIN_REG_MR_CMD_LOCAL_WRITE_ENABLE_MASK BIT(0) +#define EFA_ADMIN_REG_MR_CMD_REMOTE_READ_ENABLE_SHIFT 2 +#define EFA_ADMIN_REG_MR_CMD_REMOTE_READ_ENABLE_MASK BIT(2) /* create_cq_cmd */ #define EFA_ADMIN_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_SHIFT 5 diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.c b/drivers/infiniband/hw/efa/efa_com_cmd.c index 4713c2756ad3..520c9d920f9e 100644 --- a/drivers/infiniband/hw/efa/efa_com_cmd.c +++ b/drivers/infiniband/hw/efa/efa_com_cmd.c @@ -230,8 +230,7 @@ int efa_com_register_mr(struct efa_com_dev *edev, mr_cmd.flags |= params->page_shift & EFA_ADMIN_REG_MR_CMD_PHYS_PAGE_SIZE_SHIFT_MASK; mr_cmd.iova = params->iova; - mr_cmd.permissions |= params->permissions & - EFA_ADMIN_REG_MR_CMD_LOCAL_WRITE_ENABLE_MASK; + mr_cmd.permissions = params->permissions; if (params->inline_pbl) { memcpy(mr_cmd.pbl.inline_pbl_array, diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.h b/drivers/infiniband/hw/efa/efa_com_cmd.h index 6134d13ecc6f..d119186c41d0 100644 --- a/drivers/infiniband/hw/efa/efa_com_cmd.h +++ b/drivers/infiniband/hw/efa/efa_com_cmd.h @@ -178,12 +178,7 @@ struct efa_com_reg_mr_params { * address mapping */ u8 page_shift; - /* - * permissions - * 0: local_write_enable - Write permissions: value of 1 needed - * for RQ buffers and for RDMA write:1: reserved1 - remote - * access flags, etc - */ + /* see permissions field of struct efa_admin_reg_mr_cmd */ u8 permissions; u8 inline_pbl; u8 indirect; diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c index e1f1c1495da1..9701f8e52c71 100644 --- a/drivers/infiniband/hw/efa/efa_verbs.c +++ b/drivers/infiniband/hw/efa/efa_verbs.c @@ -70,7 +70,8 @@ static const char *const efa_stats_names[] = { #define EFA_CHUNK_USED_SIZE \ ((EFA_PTRS_PER_CHUNK * EFA_CHUNK_PAYLOAD_PTR_SIZE) + EFA_CHUNK_PTR_SIZE) -#define EFA_SUPPORTED_ACCESS_FLAGS IB_ACCESS_LOCAL_WRITE +#define EFA_SUPPORTED_ACCESS_FLAGS \ + (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ) struct pbl_chunk { dma_addr_t dma_addr; @@ -1382,7 +1383,7 @@ struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, params.pd = to_epd(ibpd)->pdn; params.iova = virt_addr; params.mr_length_in_bytes = length; - params.permissions = access_flags & 0x1; + params.permissions = access_flags; pg_sz = ib_umem_find_best_pgsz(mr->umem, dev->dev_attr.page_size_cap, From patchwork Thu Nov 21 14:15:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gal Pressman X-Patchwork-Id: 11256333 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 559266C1 for ; Thu, 21 Nov 2019 14:15:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2BF482071C for ; Thu, 21 Nov 2019 14:15:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="WvsvpWg9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727194AbfKUOPf (ORCPT ); Thu, 21 Nov 2019 09:15:35 -0500 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:26551 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726747AbfKUOPf (ORCPT ); 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Thu, 21 Nov 2019 14:15:24 +0000 (UTC) Received: from EX13D13EUB001.ant.amazon.com (10.43.166.101) by EX13MTAUEA001.ant.amazon.com (10.43.61.82) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 21 Nov 2019 14:15:23 +0000 Received: from EX13MTAUEB001.ant.amazon.com (10.43.60.96) by EX13D13EUB001.ant.amazon.com (10.43.166.101) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 21 Nov 2019 14:15:22 +0000 Received: from 8c85908914bf.ant.amazon.com (10.218.69.146) by mail-relay.amazon.com (10.43.60.129) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Thu, 21 Nov 2019 14:15:20 +0000 From: Gal Pressman To: Jason Gunthorpe , Doug Ledford CC: , Alexander Matushevsky , Daniel Kranzdorf , Yossi Leybovich , Gal Pressman Subject: [PATCH for-next v2 3/3] RDMA/efa: Expose RDMA read related attributes Date: Thu, 21 Nov 2019 16:15:09 +0200 Message-ID: <20191121141509.59297-4-galpress@amazon.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191121141509.59297-1-galpress@amazon.com> References: <20191121141509.59297-1-galpress@amazon.com> MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Daniel Kranzdorf Query the device attributes for RDMA operations, including maximum transfer size and maximum number of SGEs per RDMA WR, and report them back to the userspace library. Signed-off-by: Daniel Kranzdorf Reviewed-by: Yossi Leybovich Signed-off-by: Gal Pressman --- .../infiniband/hw/efa/efa_admin_cmds_defs.h | 17 ++++++++++++++ drivers/infiniband/hw/efa/efa_com_cmd.c | 3 +++ drivers/infiniband/hw/efa/efa_com_cmd.h | 3 +++ drivers/infiniband/hw/efa/efa_verbs.c | 22 ++++++++++++++----- include/uapi/rdma/efa-abi.h | 6 +++++ 5 files changed, 46 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h index 7fa9d532db61..e96bcb16bd2b 100644 --- a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h +++ b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h @@ -562,6 +562,16 @@ struct efa_admin_feature_device_attr_desc { /* Indicates how many bits are used virtual address access */ u8 virt_addr_width; + + /* + * 0 : rdma_read - If set, RDMA Read is supported on + * TX queues + * 31:1 : reserved - MBZ + */ + u32 device_caps; + + /* Max RDMA transfer size in bytes */ + u32 max_rdma_size; }; struct efa_admin_feature_queue_attr_desc { @@ -608,6 +618,9 @@ struct efa_admin_feature_queue_attr_desc { /* The maximum size of LLQ in bytes */ u32 max_llq_size; + + /* Maximum number of SGEs for a single RDMA read WQE */ + u16 max_wr_rdma_sges; }; struct efa_admin_feature_aenq_desc { @@ -622,6 +635,7 @@ struct efa_admin_feature_network_attr_desc { /* Raw address data in network byte order */ u8 addr[16]; + /* max packet payload size in bytes */ u32 mtu; }; @@ -797,4 +811,7 @@ struct efa_admin_mmio_req_read_less_resp { /* get_set_feature_common_desc */ #define EFA_ADMIN_GET_SET_FEATURE_COMMON_DESC_SELECT_MASK GENMASK(1, 0) +/* feature_device_attr_desc */ +#define EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_RDMA_READ_MASK BIT(0) + #endif /* _EFA_ADMIN_CMDS_H_ */ diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.c b/drivers/infiniband/hw/efa/efa_com_cmd.c index 520c9d920f9e..e20bd84a1014 100644 --- a/drivers/infiniband/hw/efa/efa_com_cmd.c +++ b/drivers/infiniband/hw/efa/efa_com_cmd.c @@ -444,6 +444,8 @@ int efa_com_get_device_attr(struct efa_com_dev *edev, result->phys_addr_width = resp.u.device_attr.phys_addr_width; result->virt_addr_width = resp.u.device_attr.virt_addr_width; result->db_bar = resp.u.device_attr.db_bar; + result->max_rdma_size = resp.u.device_attr.max_rdma_size; + result->device_caps = resp.u.device_attr.device_caps; if (result->admin_api_version < 1) { ibdev_err_ratelimited( @@ -477,6 +479,7 @@ int efa_com_get_device_attr(struct efa_com_dev *edev, result->max_ah = resp.u.queue_attr.max_ah; result->max_llq_size = resp.u.queue_attr.max_llq_size; result->sub_cqs_per_cq = resp.u.queue_attr.sub_cqs_per_cq; + result->max_wr_rdma_sge = resp.u.queue_attr.max_wr_rdma_sges; err = efa_com_get_feature(edev, &resp, EFA_ADMIN_NETWORK_ATTR); if (err) { diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.h b/drivers/infiniband/hw/efa/efa_com_cmd.h index d119186c41d0..31db5a0cbd5b 100644 --- a/drivers/infiniband/hw/efa/efa_com_cmd.h +++ b/drivers/infiniband/hw/efa/efa_com_cmd.h @@ -121,9 +121,12 @@ struct efa_com_get_device_attr_result { u32 max_pd; u32 max_ah; u32 max_llq_size; + u32 max_rdma_size; + u32 device_caps; u16 sub_cqs_per_cq; u16 max_sq_sge; u16 max_rq_sge; + u16 max_wr_rdma_sge; u8 db_bar; }; diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c index 9701f8e52c71..c9d294caa27a 100644 --- a/drivers/infiniband/hw/efa/efa_verbs.c +++ b/drivers/infiniband/hw/efa/efa_verbs.c @@ -70,9 +70,6 @@ static const char *const efa_stats_names[] = { #define EFA_CHUNK_USED_SIZE \ ((EFA_PTRS_PER_CHUNK * EFA_CHUNK_PAYLOAD_PTR_SIZE) + EFA_CHUNK_PTR_SIZE) -#define EFA_SUPPORTED_ACCESS_FLAGS \ - (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ) - struct pbl_chunk { dma_addr_t dma_addr; u64 *buf; @@ -142,6 +139,11 @@ to_emmap(struct rdma_user_mmap_entry *rdma_entry) return container_of(rdma_entry, struct efa_user_mmap_entry, rdma_entry); } +static inline bool is_rdma_read_cap(struct efa_dev *dev) +{ + return dev->dev_attr.device_caps & EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_RDMA_READ_MASK; +} + #define field_avail(x, fld, sz) (offsetof(typeof(x), fld) + \ FIELD_SIZEOF(typeof(x), fld) <= (sz)) @@ -201,12 +203,17 @@ int efa_query_device(struct ib_device *ibdev, dev_attr->max_rq_depth); props->max_send_sge = dev_attr->max_sq_sge; props->max_recv_sge = dev_attr->max_rq_sge; + props->max_sge_rd = dev_attr->max_wr_rdma_sge; if (udata && udata->outlen) { resp.max_sq_sge = dev_attr->max_sq_sge; resp.max_rq_sge = dev_attr->max_rq_sge; resp.max_sq_wr = dev_attr->max_sq_depth; resp.max_rq_wr = dev_attr->max_rq_depth; + resp.max_rdma_size = dev_attr->max_rdma_size; + + if (is_rdma_read_cap(dev)) + resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RDMA_READ; err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); @@ -1345,6 +1352,7 @@ struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, struct efa_com_reg_mr_params params = {}; struct efa_com_reg_mr_result result = {}; struct pbl_context pbl; + int supp_access_flags; unsigned int pg_sz; struct efa_mr *mr; int inline_size; @@ -1358,10 +1366,14 @@ struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, goto err_out; } - if (access_flags & ~EFA_SUPPORTED_ACCESS_FLAGS) { + supp_access_flags = + IB_ACCESS_LOCAL_WRITE | + (is_rdma_read_cap(dev) ? IB_ACCESS_REMOTE_READ : 0); + + if (access_flags & ~supp_access_flags) { ibdev_dbg(&dev->ibdev, "Unsupported access flags[%#x], supported[%#x]\n", - access_flags, EFA_SUPPORTED_ACCESS_FLAGS); + access_flags, supp_access_flags); err = -EOPNOTSUPP; goto err_out; } diff --git a/include/uapi/rdma/efa-abi.h b/include/uapi/rdma/efa-abi.h index 9599a2a62be8..53b6e2036a9b 100644 --- a/include/uapi/rdma/efa-abi.h +++ b/include/uapi/rdma/efa-abi.h @@ -90,12 +90,18 @@ struct efa_ibv_create_ah_resp { __u8 reserved_30[2]; }; +enum { + EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0, +}; + struct efa_ibv_ex_query_device_resp { __u32 comp_mask; __u32 max_sq_wr; __u32 max_rq_wr; __u16 max_sq_sge; __u16 max_rq_sge; + __u32 max_rdma_size; + __u32 device_caps; }; #endif /* EFA_ABI_USER_H */