From patchwork Sun Apr 11 12:29:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 419876 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AEDCDC433B4 for ; Sun, 11 Apr 2021 12:29:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 78D6F60FF1 for ; Sun, 11 Apr 2021 12:29:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235484AbhDKM3y (ORCPT ); Sun, 11 Apr 2021 08:29:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:51376 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229804AbhDKM3t (ORCPT ); Sun, 11 Apr 2021 08:29:49 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E9D1E610C8; Sun, 11 Apr 2021 12:29:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618144173; bh=ryPSsBc8zChcyATljURiG55ushiGkwgPiPc5jB748y0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZF0B0ni8dz3nUEjKXkhsh3FIH/BXdOlJc5EPuhTfBj/RyFKEDdi1AYCf94xcrWgyf 03nLVYEdqHXMsZGKivQc/ZaBkVde86TrXaXAmoKVniQ1h6ZLKo6dHBVNBtD25cx78H 2SFwIP11BTUaEX+f9sLYZpoIAbAgg3VfEuSbqUuTxbokNejStjEPwrJjpfBveG687D ILhVL6MliyH1WL5jnfO7ucjjEwbnGtNnxX+aMXnwBxLSztN98f4XjUlTxZxsIYYAsg UXgE8Xa4tZqMITlEwxrBT7bGWCCxD5KUiofNx6x4Ivmr0MRWL+POGDt7ZBXAPKhvqW JRJ4gESUzGRMw== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Maor Gottlieb , linux-api@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed , Yishai Hadas Subject: [PATCH mlx5-next v1 1/7] net/mlx5: Add MEMIC operations related bits Date: Sun, 11 Apr 2021 15:29:18 +0300 Message-Id: <20210411122924.60230-2-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210411122924.60230-1-leon@kernel.org> References: <20210411122924.60230-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maor Gottlieb Add the MEMIC operations bits and structures to the mlx5_ifc file. Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- include/linux/mlx5/mlx5_ifc.h | 42 ++++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index df5d91c8b2d4..0ec4ea0a9c92 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -133,6 +133,7 @@ enum { MLX5_CMD_OP_PAGE_FAULT_RESUME = 0x204, MLX5_CMD_OP_ALLOC_MEMIC = 0x205, MLX5_CMD_OP_DEALLOC_MEMIC = 0x206, + MLX5_CMD_OP_MODIFY_MEMIC = 0x207, MLX5_CMD_OP_CREATE_EQ = 0x301, MLX5_CMD_OP_DESTROY_EQ = 0x302, MLX5_CMD_OP_QUERY_EQ = 0x303, @@ -1015,7 +1016,11 @@ struct mlx5_ifc_device_mem_cap_bits { u8 header_modify_sw_icm_start_address[0x40]; - u8 reserved_at_180[0x680]; + u8 reserved_at_180[0x80]; + + u8 memic_operations[0x20]; + + u8 reserved_at_220[0x5e0]; }; struct mlx5_ifc_device_event_cap_bits { @@ -10399,6 +10404,41 @@ struct mlx5_ifc_destroy_vport_lag_in_bits { u8 reserved_at_40[0x40]; }; +enum { + MLX5_MODIFY_MEMIC_OP_MOD_ALLOC, + MLX5_MODIFY_MEMIC_OP_MOD_DEALLOC, +}; + +struct mlx5_ifc_modify_memic_in_bits { + u8 opcode[0x10]; + u8 uid[0x10]; + + u8 reserved_at_20[0x10]; + u8 op_mod[0x10]; + + u8 reserved_at_40[0x20]; + + u8 reserved_at_60[0x18]; + u8 memic_operation_type[0x8]; + + u8 memic_start_addr[0x40]; + + u8 reserved_at_c0[0x140]; +}; + +struct mlx5_ifc_modify_memic_out_bits { + u8 status[0x8]; + u8 reserved_at_8[0x18]; + + u8 syndrome[0x20]; + + u8 reserved_at_40[0x40]; + + u8 memic_operation_addr[0x40]; + + u8 reserved_at_c0[0x140]; +}; + struct mlx5_ifc_alloc_memic_in_bits { u8 opcode[0x10]; u8 reserved_at_10[0x10]; From patchwork Sun Apr 11 12:29:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 419473 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BBC1C433ED for ; Sun, 11 Apr 2021 12:29:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7850760FF1 for ; Sun, 11 Apr 2021 12:29:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235546AbhDKMaD (ORCPT ); Sun, 11 Apr 2021 08:30:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:51520 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235517AbhDKMaA (ORCPT ); Sun, 11 Apr 2021 08:30:00 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2998A610C8; Sun, 11 Apr 2021 12:29:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618144183; bh=llpiJ23BaDMVc5YoUZRod9Gtb8+AxvI90lK7C/0LfFU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lsIwq/R/rkIG0eCPR0JmZ52L820sCnKMvtHLioyav9UiMxL4YMzvit3ssabyAAV+P lG6H2I5V6Rp/6XwBpKNjkygzi9s0sd/PwMF8oxZpWTzflZZYKrTjKpRllyfRzVfsZL xgU2S6cdHT9OXThDrZ5kY3WYmrbVvTV58fg08Bh4nUEZHp+bEncZgAKXFTd+WslN6E +wi75jjxvvfAvScvOshgYUpW4/hJk385C5QimcbCf1H0ISl/+pPlZmkmgDPufDecJx ywHwMUR3dTDx89wMtQlbr6r37YI2n3PGmZWvGC6vu2nsr10MZPRAJOzGZIb2Uejp5E n7E0Egcwh9onQ== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Maor Gottlieb , linux-api@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed , Yishai Hadas Subject: [PATCH rdma-next v1 2/7] RDMA/uverbs: Make UVERBS_OBJECT_METHODS to consider line number Date: Sun, 11 Apr 2021 15:29:19 +0300 Message-Id: <20210411122924.60230-3-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210411122924.60230-1-leon@kernel.org> References: <20210411122924.60230-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maor Gottlieb In order to support multiple methods declaration in the same file we should use the line number as part of the name. Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- include/rdma/uverbs_named_ioctl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/rdma/uverbs_named_ioctl.h b/include/rdma/uverbs_named_ioctl.h index f04f5126f61e..ee7873f872c3 100644 --- a/include/rdma/uverbs_named_ioctl.h +++ b/include/rdma/uverbs_named_ioctl.h @@ -20,7 +20,7 @@ /* These are static so they do not need to be qualified */ #define UVERBS_METHOD_ATTRS(method_id) _method_attrs_##method_id -#define UVERBS_OBJECT_METHODS(object_id) _object_methods_##object_id +#define UVERBS_OBJECT_METHODS(object_id) _UVERBS_NAME(_object_methods_##object_id, __LINE__) #define DECLARE_UVERBS_NAMED_METHOD(_method_id, ...) \ static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \ From patchwork Sun Apr 11 12:29:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 419875 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03583C43470 for ; Sun, 11 Apr 2021 12:29:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C5533610C8 for ; Sun, 11 Apr 2021 12:29:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235501AbhDKM3z (ORCPT ); Sun, 11 Apr 2021 08:29:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:51408 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235482AbhDKM3x (ORCPT ); Sun, 11 Apr 2021 08:29:53 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3D47060FF1; Sun, 11 Apr 2021 12:29:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618144177; bh=Lk+Qh6rK6pyGv1dpO9PY+CDZ9M/OyXn6Nb+9gavFLh4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RweGEnGfTUF5gfRZCvg1Joic1N0kpFY2woDPT8TC4lCjkQBytnBokQwsYqt20Oi9X u/VSmgx9j+ew2slML114ShTtpw1Pp8XQwqJJ83cfn9zIUR7OLcDuKDNSfLZps9daYr Sq/KVZDxPmIcjuCq4Br1nWPNgDZbDqJ0YZaiAslZXste87/8/KzyH9AZ8Z8GBkTRfU avupHAx+jWYKequqPQb+CqsC7NEBaWBrMmNTeRLga/Z4zpnci76EmCYmMlMs41ia5e 2sSI/e/7ZtAOJ+pVa6q7BmXUTwmMt45BFP8ZWWUul3UQBSoO+hJ/q6q/p0uC3WFCYe 7+JJnyPKRCX2g== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Maor Gottlieb , linux-api@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed , Yishai Hadas Subject: [PATCH rdma-next v1 3/7] RDMA/mlx5: Move all DM logic to separate file Date: Sun, 11 Apr 2021 15:29:20 +0300 Message-Id: <20210411122924.60230-4-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210411122924.60230-1-leon@kernel.org> References: <20210411122924.60230-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maor Gottlieb Move all device memory related code to a separate file. Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx5/Makefile | 1 + drivers/infiniband/hw/mlx5/cmd.c | 101 -------- drivers/infiniband/hw/mlx5/cmd.h | 3 - drivers/infiniband/hw/mlx5/dm.c | 342 +++++++++++++++++++++++++++ drivers/infiniband/hw/mlx5/dm.h | 42 ++++ drivers/infiniband/hw/mlx5/main.c | 236 +----------------- drivers/infiniband/hw/mlx5/mlx5_ib.h | 24 -- drivers/infiniband/hw/mlx5/mr.c | 1 + 8 files changed, 388 insertions(+), 362 deletions(-) create mode 100644 drivers/infiniband/hw/mlx5/dm.c create mode 100644 drivers/infiniband/hw/mlx5/dm.h diff --git a/drivers/infiniband/hw/mlx5/Makefile b/drivers/infiniband/hw/mlx5/Makefile index b4c009bb0db6..f43380106bd0 100644 --- a/drivers/infiniband/hw/mlx5/Makefile +++ b/drivers/infiniband/hw/mlx5/Makefile @@ -6,6 +6,7 @@ mlx5_ib-y := ah.o \ cong.o \ counters.o \ cq.o \ + dm.o \ doorbell.o \ gsi.o \ ib_virt.o \ diff --git a/drivers/infiniband/hw/mlx5/cmd.c b/drivers/infiniband/hw/mlx5/cmd.c index 234f29912ba9..a8db8a051170 100644 --- a/drivers/infiniband/hw/mlx5/cmd.c +++ b/drivers/infiniband/hw/mlx5/cmd.c @@ -47,107 +47,6 @@ int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point, return mlx5_cmd_exec_inout(dev, query_cong_params, in, out); } -int mlx5_cmd_alloc_memic(struct mlx5_dm *dm, phys_addr_t *addr, - u64 length, u32 alignment) -{ - struct mlx5_core_dev *dev = dm->dev; - u64 num_memic_hw_pages = MLX5_CAP_DEV_MEM(dev, memic_bar_size) - >> PAGE_SHIFT; - u64 hw_start_addr = MLX5_CAP64_DEV_MEM(dev, memic_bar_start_addr); - u32 max_alignment = MLX5_CAP_DEV_MEM(dev, log_max_memic_addr_alignment); - u32 num_pages = DIV_ROUND_UP(length, PAGE_SIZE); - u32 out[MLX5_ST_SZ_DW(alloc_memic_out)] = {}; - u32 in[MLX5_ST_SZ_DW(alloc_memic_in)] = {}; - u32 mlx5_alignment; - u64 page_idx = 0; - int ret = 0; - - if (!length || (length & MLX5_MEMIC_ALLOC_SIZE_MASK)) - return -EINVAL; - - /* mlx5 device sets alignment as 64*2^driver_value - * so normalizing is needed. - */ - mlx5_alignment = (alignment < MLX5_MEMIC_BASE_ALIGN) ? 0 : - alignment - MLX5_MEMIC_BASE_ALIGN; - if (mlx5_alignment > max_alignment) - return -EINVAL; - - MLX5_SET(alloc_memic_in, in, opcode, MLX5_CMD_OP_ALLOC_MEMIC); - MLX5_SET(alloc_memic_in, in, range_size, num_pages * PAGE_SIZE); - MLX5_SET(alloc_memic_in, in, memic_size, length); - MLX5_SET(alloc_memic_in, in, log_memic_addr_alignment, - mlx5_alignment); - - while (page_idx < num_memic_hw_pages) { - spin_lock(&dm->lock); - page_idx = bitmap_find_next_zero_area(dm->memic_alloc_pages, - num_memic_hw_pages, - page_idx, - num_pages, 0); - - if (page_idx < num_memic_hw_pages) - bitmap_set(dm->memic_alloc_pages, - page_idx, num_pages); - - spin_unlock(&dm->lock); - - if (page_idx >= num_memic_hw_pages) - break; - - MLX5_SET64(alloc_memic_in, in, range_start_addr, - hw_start_addr + (page_idx * PAGE_SIZE)); - - ret = mlx5_cmd_exec_inout(dev, alloc_memic, in, out); - if (ret) { - spin_lock(&dm->lock); - bitmap_clear(dm->memic_alloc_pages, - page_idx, num_pages); - spin_unlock(&dm->lock); - - if (ret == -EAGAIN) { - page_idx++; - continue; - } - - return ret; - } - - *addr = dev->bar_addr + - MLX5_GET64(alloc_memic_out, out, memic_start_addr); - - return 0; - } - - return -ENOMEM; -} - -void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length) -{ - struct mlx5_core_dev *dev = dm->dev; - u64 hw_start_addr = MLX5_CAP64_DEV_MEM(dev, memic_bar_start_addr); - u32 num_pages = DIV_ROUND_UP(length, PAGE_SIZE); - u32 in[MLX5_ST_SZ_DW(dealloc_memic_in)] = {}; - u64 start_page_idx; - int err; - - addr -= dev->bar_addr; - start_page_idx = (addr - hw_start_addr) >> PAGE_SHIFT; - - MLX5_SET(dealloc_memic_in, in, opcode, MLX5_CMD_OP_DEALLOC_MEMIC); - MLX5_SET64(dealloc_memic_in, in, memic_start_addr, addr); - MLX5_SET(dealloc_memic_in, in, memic_size, length); - - err = mlx5_cmd_exec_in(dev, dealloc_memic, in); - if (err) - return; - - spin_lock(&dm->lock); - bitmap_clear(dm->memic_alloc_pages, - start_page_idx, num_pages); - spin_unlock(&dm->lock); -} - void mlx5_cmd_destroy_tir(struct mlx5_core_dev *dev, u32 tirn, u16 uid) { u32 in[MLX5_ST_SZ_DW(destroy_tir_in)] = {}; diff --git a/drivers/infiniband/hw/mlx5/cmd.h b/drivers/infiniband/hw/mlx5/cmd.h index 88ea6ef8f2cb..66c96292ed43 100644 --- a/drivers/infiniband/hw/mlx5/cmd.h +++ b/drivers/infiniband/hw/mlx5/cmd.h @@ -41,9 +41,6 @@ int mlx5_cmd_dump_fill_mkey(struct mlx5_core_dev *dev, u32 *mkey); int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey); int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point, void *out); -int mlx5_cmd_alloc_memic(struct mlx5_dm *dm, phys_addr_t *addr, - u64 length, u32 alignment); -void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length); int mlx5_cmd_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn, u16 uid); void mlx5_cmd_destroy_tir(struct mlx5_core_dev *dev, u32 tirn, u16 uid); void mlx5_cmd_destroy_tis(struct mlx5_core_dev *dev, u32 tisn, u16 uid); diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c new file mode 100644 index 000000000000..21fefcd405ef --- /dev/null +++ b/drivers/infiniband/hw/mlx5/dm.c @@ -0,0 +1,342 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* + * Copyright (c) 2021, Mellanox Technologies inc. All rights reserved. + */ + +#include +#include "dm.h" + +#define UVERBS_MODULE_NAME mlx5_ib +#include + +static int mlx5_cmd_alloc_memic(struct mlx5_dm *dm, phys_addr_t *addr, + u64 length, u32 alignment) +{ + struct mlx5_core_dev *dev = dm->dev; + u64 num_memic_hw_pages = MLX5_CAP_DEV_MEM(dev, memic_bar_size) + >> PAGE_SHIFT; + u64 hw_start_addr = MLX5_CAP64_DEV_MEM(dev, memic_bar_start_addr); + u32 max_alignment = MLX5_CAP_DEV_MEM(dev, log_max_memic_addr_alignment); + u32 num_pages = DIV_ROUND_UP(length, PAGE_SIZE); + u32 out[MLX5_ST_SZ_DW(alloc_memic_out)] = {}; + u32 in[MLX5_ST_SZ_DW(alloc_memic_in)] = {}; + u32 mlx5_alignment; + u64 page_idx = 0; + int ret = 0; + + if (!length || (length & MLX5_MEMIC_ALLOC_SIZE_MASK)) + return -EINVAL; + + /* mlx5 device sets alignment as 64*2^driver_value + * so normalizing is needed. + */ + mlx5_alignment = (alignment < MLX5_MEMIC_BASE_ALIGN) ? 0 : + alignment - MLX5_MEMIC_BASE_ALIGN; + if (mlx5_alignment > max_alignment) + return -EINVAL; + + MLX5_SET(alloc_memic_in, in, opcode, MLX5_CMD_OP_ALLOC_MEMIC); + MLX5_SET(alloc_memic_in, in, range_size, num_pages * PAGE_SIZE); + MLX5_SET(alloc_memic_in, in, memic_size, length); + MLX5_SET(alloc_memic_in, in, log_memic_addr_alignment, + mlx5_alignment); + + while (page_idx < num_memic_hw_pages) { + spin_lock(&dm->lock); + page_idx = bitmap_find_next_zero_area(dm->memic_alloc_pages, + num_memic_hw_pages, + page_idx, + num_pages, 0); + + if (page_idx < num_memic_hw_pages) + bitmap_set(dm->memic_alloc_pages, + page_idx, num_pages); + + spin_unlock(&dm->lock); + + if (page_idx >= num_memic_hw_pages) + break; + + MLX5_SET64(alloc_memic_in, in, range_start_addr, + hw_start_addr + (page_idx * PAGE_SIZE)); + + ret = mlx5_cmd_exec_inout(dev, alloc_memic, in, out); + if (ret) { + spin_lock(&dm->lock); + bitmap_clear(dm->memic_alloc_pages, + page_idx, num_pages); + spin_unlock(&dm->lock); + + if (ret == -EAGAIN) { + page_idx++; + continue; + } + + return ret; + } + + *addr = dev->bar_addr + + MLX5_GET64(alloc_memic_out, out, memic_start_addr); + + return 0; + } + + return -ENOMEM; +} + +void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, + u64 length) +{ + struct mlx5_core_dev *dev = dm->dev; + u64 hw_start_addr = MLX5_CAP64_DEV_MEM(dev, memic_bar_start_addr); + u32 num_pages = DIV_ROUND_UP(length, PAGE_SIZE); + u32 in[MLX5_ST_SZ_DW(dealloc_memic_in)] = {}; + u64 start_page_idx; + int err; + + addr -= dev->bar_addr; + start_page_idx = (addr - hw_start_addr) >> PAGE_SHIFT; + + MLX5_SET(dealloc_memic_in, in, opcode, MLX5_CMD_OP_DEALLOC_MEMIC); + MLX5_SET64(dealloc_memic_in, in, memic_start_addr, addr); + MLX5_SET(dealloc_memic_in, in, memic_size, length); + + err = mlx5_cmd_exec_in(dev, dealloc_memic, in); + if (err) + return; + + spin_lock(&dm->lock); + bitmap_clear(dm->memic_alloc_pages, + start_page_idx, num_pages); + spin_unlock(&dm->lock); +} + +static int add_dm_mmap_entry(struct ib_ucontext *context, + struct mlx5_ib_dm *mdm, u64 address) +{ + mdm->mentry.mmap_flag = MLX5_IB_MMAP_TYPE_MEMIC; + mdm->mentry.address = address; + return rdma_user_mmap_entry_insert_range( + context, &mdm->mentry.rdma_entry, mdm->size, + MLX5_IB_MMAP_DEVICE_MEM << 16, + (MLX5_IB_MMAP_DEVICE_MEM << 16) + (1UL << 16) - 1); +} + +static inline int check_dm_type_support(struct mlx5_ib_dev *dev, u32 type) +{ + switch (type) { + case MLX5_IB_UAPI_DM_TYPE_MEMIC: + if (!MLX5_CAP_DEV_MEM(dev->mdev, memic)) + return -EOPNOTSUPP; + break; + case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: + case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: + if (!capable(CAP_SYS_RAWIO) || !capable(CAP_NET_RAW)) + return -EPERM; + + if (!(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) || + MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner) || + MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2) || + MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner_v2))) + return -EOPNOTSUPP; + break; + } + + return 0; +} + +static int handle_alloc_dm_memic(struct ib_ucontext *ctx, struct mlx5_ib_dm *dm, + struct ib_dm_alloc_attr *attr, + struct uverbs_attr_bundle *attrs) +{ + struct mlx5_dm *dm_db = &to_mdev(ctx->device)->dm; + u64 start_offset; + u16 page_idx; + int err; + u64 address; + + dm->size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE); + + err = mlx5_cmd_alloc_memic(dm_db, &dm->dev_addr, + dm->size, attr->alignment); + if (err) { + kfree(dm); + return err; + } + + address = dm->dev_addr & PAGE_MASK; + err = add_dm_mmap_entry(ctx, dm, address); + if (err) { + mlx5_cmd_dealloc_memic(dm_db, dm->dev_addr, dm->size); + kfree(dm); + return err; + } + + page_idx = dm->mentry.rdma_entry.start_pgoff & 0xFFFF; + err = uverbs_copy_to(attrs, + MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, + &page_idx, + sizeof(page_idx)); + if (err) + goto err_copy; + + start_offset = dm->dev_addr & ~PAGE_MASK; + err = uverbs_copy_to(attrs, + MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, + &start_offset, sizeof(start_offset)); + if (err) + goto err_copy; + + return 0; + +err_copy: + rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); + + return err; +} + +static int handle_alloc_dm_sw_icm(struct ib_ucontext *ctx, + struct mlx5_ib_dm *dm, + struct ib_dm_alloc_attr *attr, + struct uverbs_attr_bundle *attrs, int type) +{ + struct mlx5_core_dev *dev = to_mdev(ctx->device)->mdev; + u64 act_size; + int err; + + /* Allocation size must a multiple of the basic block size + * and a power of 2. + */ + act_size = round_up(attr->length, MLX5_SW_ICM_BLOCK_SIZE(dev)); + act_size = roundup_pow_of_two(act_size); + + dm->size = act_size; + err = mlx5_dm_sw_icm_alloc(dev, type, act_size, attr->alignment, + to_mucontext(ctx)->devx_uid, &dm->dev_addr, + &dm->icm_dm.obj_id); + if (err) + return err; + + err = uverbs_copy_to(attrs, MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, + &dm->dev_addr, sizeof(dm->dev_addr)); + if (err) + mlx5_dm_sw_icm_dealloc(dev, type, dm->size, + to_mucontext(ctx)->devx_uid, + dm->dev_addr, dm->icm_dm.obj_id); + + return err; +} + +struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, + struct ib_ucontext *context, + struct ib_dm_alloc_attr *attr, + struct uverbs_attr_bundle *attrs) +{ + struct mlx5_ib_dm *dm; + enum mlx5_ib_uapi_dm_type type; + int err; + + err = uverbs_get_const_default(&type, attrs, + MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE, + MLX5_IB_UAPI_DM_TYPE_MEMIC); + if (err) + return ERR_PTR(err); + + mlx5_ib_dbg(to_mdev(ibdev), "alloc_dm req: dm_type=%d user_length=0x%llx log_alignment=%d\n", + type, attr->length, attr->alignment); + + err = check_dm_type_support(to_mdev(ibdev), type); + if (err) + return ERR_PTR(err); + + dm = kzalloc(sizeof(*dm), GFP_KERNEL); + if (!dm) + return ERR_PTR(-ENOMEM); + + dm->type = type; + + switch (type) { + case MLX5_IB_UAPI_DM_TYPE_MEMIC: + err = handle_alloc_dm_memic(context, dm, + attr, + attrs); + break; + case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: + err = handle_alloc_dm_sw_icm(context, dm, + attr, attrs, + MLX5_SW_ICM_TYPE_STEERING); + break; + case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: + err = handle_alloc_dm_sw_icm(context, dm, + attr, attrs, + MLX5_SW_ICM_TYPE_HEADER_MODIFY); + break; + default: + err = -EOPNOTSUPP; + } + + if (err) + goto err_free; + + return &dm->ibdm; + +err_free: + kfree(dm); + return ERR_PTR(err); +} + +int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs) +{ + struct mlx5_ib_ucontext *ctx = rdma_udata_to_drv_context( + &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); + struct mlx5_core_dev *dev = to_mdev(ibdm->device)->mdev; + struct mlx5_ib_dm *dm = to_mdm(ibdm); + int ret; + + switch (dm->type) { + case MLX5_IB_UAPI_DM_TYPE_MEMIC: + rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); + return 0; + case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: + ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_STEERING, + dm->size, ctx->devx_uid, + dm->dev_addr, dm->icm_dm.obj_id); + if (ret) + return ret; + break; + case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: + ret = mlx5_dm_sw_icm_dealloc(dev, + MLX5_SW_ICM_TYPE_HEADER_MODIFY, + dm->size, ctx->devx_uid, + dm->dev_addr, dm->icm_dm.obj_id); + if (ret) + return ret; + break; + default: + return -EOPNOTSUPP; + } + + kfree(dm); + + return 0; +} + +ADD_UVERBS_ATTRIBUTES_SIMPLE( + mlx5_ib_dm, UVERBS_OBJECT_DM, UVERBS_METHOD_DM_ALLOC, + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, + UVERBS_ATTR_TYPE(u64), UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, + UVERBS_ATTR_TYPE(u16), UA_OPTIONAL), + UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE, + enum mlx5_ib_uapi_dm_type, UA_OPTIONAL)); + +const struct uapi_definition mlx5_ib_dm_defs[] = { + UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm), + {}, +}; + +const struct ib_device_ops mlx5_ib_dev_dm_ops = { + .alloc_dm = mlx5_ib_alloc_dm, + .dealloc_dm = mlx5_ib_dealloc_dm, + .reg_dm_mr = mlx5_ib_reg_dm_mr, +}; diff --git a/drivers/infiniband/hw/mlx5/dm.h b/drivers/infiniband/hw/mlx5/dm.h new file mode 100644 index 000000000000..f8ff5d7fd7c5 --- /dev/null +++ b/drivers/infiniband/hw/mlx5/dm.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* + * Copyright (c) 2021, Mellanox Technologies inc. All rights reserved. + */ + +#ifndef _MLX5_IB_DM_H +#define _MLX5_IB_DM_H + +#include "mlx5_ib.h" + + +extern const struct ib_device_ops mlx5_ib_dev_dm_ops; +extern const struct uapi_definition mlx5_ib_dm_defs[]; + +struct mlx5_ib_dm { + struct ib_dm ibdm; + phys_addr_t dev_addr; + u32 type; + size_t size; + union { + struct { + u32 obj_id; + } icm_dm; + /* other dm types specific params should be added here */ + }; + struct mlx5_user_mmap_entry mentry; +}; + +static inline struct mlx5_ib_dm *to_mdm(struct ib_dm *ibdm) +{ + return container_of(ibdm, struct mlx5_ib_dm, ibdm); +} + +struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, + struct ib_ucontext *context, + struct ib_dm_alloc_attr *attr, + struct uverbs_attr_bundle *attrs); +int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs); +void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, + u64 length); + +#endif /* _MLX5_IB_DM_H */ diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index d1baf06517c4..b069e2610bd0 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -34,6 +34,7 @@ #include "ib_rep.h" #include "cmd.h" #include "devx.h" +#include "dm.h" #include "fs.h" #include "srq.h" #include "qp.h" @@ -2221,19 +2222,6 @@ static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, return err; } -static int add_dm_mmap_entry(struct ib_ucontext *context, - struct mlx5_ib_dm *mdm, - u64 address) -{ - mdm->mentry.mmap_flag = MLX5_IB_MMAP_TYPE_MEMIC; - mdm->mentry.address = address; - return rdma_user_mmap_entry_insert_range( - context, &mdm->mentry.rdma_entry, - mdm->size, - MLX5_IB_MMAP_DEVICE_MEM << 16, - (MLX5_IB_MMAP_DEVICE_MEM << 16) + (1UL << 16) - 1); -} - static unsigned long mlx5_vma_to_pgoff(struct vm_area_struct *vma) { unsigned long idx; @@ -2335,206 +2323,6 @@ static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vm return 0; } -static inline int check_dm_type_support(struct mlx5_ib_dev *dev, - u32 type) -{ - switch (type) { - case MLX5_IB_UAPI_DM_TYPE_MEMIC: - if (!MLX5_CAP_DEV_MEM(dev->mdev, memic)) - return -EOPNOTSUPP; - break; - case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: - case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: - if (!capable(CAP_SYS_RAWIO) || - !capable(CAP_NET_RAW)) - return -EPERM; - - if (!(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) || - MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner) || - MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2) || - MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner_v2))) - return -EOPNOTSUPP; - break; - } - - return 0; -} - -static int handle_alloc_dm_memic(struct ib_ucontext *ctx, - struct mlx5_ib_dm *dm, - struct ib_dm_alloc_attr *attr, - struct uverbs_attr_bundle *attrs) -{ - struct mlx5_dm *dm_db = &to_mdev(ctx->device)->dm; - u64 start_offset; - u16 page_idx; - int err; - u64 address; - - dm->size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE); - - err = mlx5_cmd_alloc_memic(dm_db, &dm->dev_addr, - dm->size, attr->alignment); - if (err) - return err; - - address = dm->dev_addr & PAGE_MASK; - err = add_dm_mmap_entry(ctx, dm, address); - if (err) - goto err_dealloc; - - page_idx = dm->mentry.rdma_entry.start_pgoff & 0xFFFF; - err = uverbs_copy_to(attrs, - MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, - &page_idx, - sizeof(page_idx)); - if (err) - goto err_copy; - - start_offset = dm->dev_addr & ~PAGE_MASK; - err = uverbs_copy_to(attrs, - MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, - &start_offset, sizeof(start_offset)); - if (err) - goto err_copy; - - return 0; - -err_copy: - rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); -err_dealloc: - mlx5_cmd_dealloc_memic(dm_db, dm->dev_addr, dm->size); - - return err; -} - -static int handle_alloc_dm_sw_icm(struct ib_ucontext *ctx, - struct mlx5_ib_dm *dm, - struct ib_dm_alloc_attr *attr, - struct uverbs_attr_bundle *attrs, - int type) -{ - struct mlx5_core_dev *dev = to_mdev(ctx->device)->mdev; - u64 act_size; - int err; - - /* Allocation size must a multiple of the basic block size - * and a power of 2. - */ - act_size = round_up(attr->length, MLX5_SW_ICM_BLOCK_SIZE(dev)); - act_size = roundup_pow_of_two(act_size); - - dm->size = act_size; - err = mlx5_dm_sw_icm_alloc(dev, type, act_size, attr->alignment, - to_mucontext(ctx)->devx_uid, &dm->dev_addr, - &dm->icm_dm.obj_id); - if (err) - return err; - - err = uverbs_copy_to(attrs, - MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, - &dm->dev_addr, sizeof(dm->dev_addr)); - if (err) - mlx5_dm_sw_icm_dealloc(dev, type, dm->size, - to_mucontext(ctx)->devx_uid, dm->dev_addr, - dm->icm_dm.obj_id); - - return err; -} - -struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, - struct ib_ucontext *context, - struct ib_dm_alloc_attr *attr, - struct uverbs_attr_bundle *attrs) -{ - struct mlx5_ib_dm *dm; - enum mlx5_ib_uapi_dm_type type; - int err; - - err = uverbs_get_const_default(&type, attrs, - MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE, - MLX5_IB_UAPI_DM_TYPE_MEMIC); - if (err) - return ERR_PTR(err); - - mlx5_ib_dbg(to_mdev(ibdev), "alloc_dm req: dm_type=%d user_length=0x%llx log_alignment=%d\n", - type, attr->length, attr->alignment); - - err = check_dm_type_support(to_mdev(ibdev), type); - if (err) - return ERR_PTR(err); - - dm = kzalloc(sizeof(*dm), GFP_KERNEL); - if (!dm) - return ERR_PTR(-ENOMEM); - - dm->type = type; - - switch (type) { - case MLX5_IB_UAPI_DM_TYPE_MEMIC: - err = handle_alloc_dm_memic(context, dm, - attr, - attrs); - break; - case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: - err = handle_alloc_dm_sw_icm(context, dm, - attr, attrs, - MLX5_SW_ICM_TYPE_STEERING); - break; - case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: - err = handle_alloc_dm_sw_icm(context, dm, - attr, attrs, - MLX5_SW_ICM_TYPE_HEADER_MODIFY); - break; - default: - err = -EOPNOTSUPP; - } - - if (err) - goto err_free; - - return &dm->ibdm; - -err_free: - kfree(dm); - return ERR_PTR(err); -} - -int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs) -{ - struct mlx5_ib_ucontext *ctx = rdma_udata_to_drv_context( - &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); - struct mlx5_core_dev *dev = to_mdev(ibdm->device)->mdev; - struct mlx5_ib_dm *dm = to_mdm(ibdm); - int ret; - - switch (dm->type) { - case MLX5_IB_UAPI_DM_TYPE_MEMIC: - rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); - return 0; - case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: - ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_STEERING, - dm->size, ctx->devx_uid, dm->dev_addr, - dm->icm_dm.obj_id); - if (ret) - return ret; - break; - case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: - ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_HEADER_MODIFY, - dm->size, ctx->devx_uid, dm->dev_addr, - dm->icm_dm.obj_id); - if (ret) - return ret; - break; - default: - return -EOPNOTSUPP; - } - - kfree(dm); - - return 0; -} - static int mlx5_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { struct mlx5_ib_pd *pd = to_mpd(ibpd); @@ -3818,20 +3606,6 @@ DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_UAR, &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_ALLOC), &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_DESTROY)); -ADD_UVERBS_ATTRIBUTES_SIMPLE( - mlx5_ib_dm, - UVERBS_OBJECT_DM, - UVERBS_METHOD_DM_ALLOC, - UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, - UVERBS_ATTR_TYPE(u64), - UA_MANDATORY), - UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, - UVERBS_ATTR_TYPE(u16), - UA_OPTIONAL), - UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE, - enum mlx5_ib_uapi_dm_type, - UA_OPTIONAL)); - ADD_UVERBS_ATTRIBUTES_SIMPLE( mlx5_ib_flow_action, UVERBS_OBJECT_FLOW_ACTION, @@ -3854,10 +3628,10 @@ static const struct uapi_definition mlx5_ib_defs[] = { UAPI_DEF_CHAIN(mlx5_ib_flow_defs), UAPI_DEF_CHAIN(mlx5_ib_qos_defs), UAPI_DEF_CHAIN(mlx5_ib_std_types_defs), + UAPI_DEF_CHAIN(mlx5_ib_dm_defs), UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION, &mlx5_ib_flow_action), - UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm), UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DEVICE, &mlx5_ib_query_context), UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_VAR, UAPI_DEF_IS_OBJ_SUPPORTED(var_is_supported)), @@ -4033,12 +3807,6 @@ static const struct ib_device_ops mlx5_ib_dev_xrc_ops = { INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx5_ib_xrcd, ibxrcd), }; -static const struct ib_device_ops mlx5_ib_dev_dm_ops = { - .alloc_dm = mlx5_ib_alloc_dm, - .dealloc_dm = mlx5_ib_dealloc_dm, - .reg_dm_mr = mlx5_ib_reg_dm_mr, -}; - static int mlx5_ib_init_var_table(struct mlx5_ib_dev *dev) { struct mlx5_core_dev *mdev = dev->mdev; diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 82849d6e491b..1c6dbaec22c7 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -618,20 +618,6 @@ struct mlx5_user_mmap_entry { u32 page_idx; }; -struct mlx5_ib_dm { - struct ib_dm ibdm; - phys_addr_t dev_addr; - u32 type; - size_t size; - union { - struct { - u32 obj_id; - } icm_dm; - /* other dm types specific params should be added here */ - }; - struct mlx5_user_mmap_entry mentry; -}; - #define MLX5_IB_MTT_PRESENT (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE) #define MLX5_IB_DM_MEMIC_ALLOWED_ACCESS (IB_ACCESS_LOCAL_WRITE |\ @@ -1188,11 +1174,6 @@ static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq) return container_of(msrq, struct mlx5_ib_srq, msrq); } -static inline struct mlx5_ib_dm *to_mdm(struct ib_dm *ibdm) -{ - return container_of(ibdm, struct mlx5_ib_dm, ibdm); -} - static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr) { return container_of(ibmr, struct mlx5_ib_mr, ibmr); @@ -1347,11 +1328,6 @@ int mlx5_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_table, struct ib_rwq_ind_table_init_attr *init_attr, struct ib_udata *udata); int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table); -struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, - struct ib_ucontext *context, - struct ib_dm_alloc_attr *attr, - struct uverbs_attr_bundle *attrs); -int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs); struct ib_mr *mlx5_ib_reg_dm_mr(struct ib_pd *pd, struct ib_dm *dm, struct ib_dm_mr_attr *attr, struct uverbs_attr_bundle *attrs); diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 88360e7260bf..44e14d273b45 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -42,6 +42,7 @@ #include #include #include +#include "dm.h" #include "mlx5_ib.h" /* From patchwork Sun Apr 11 12:29:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 419474 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1AE5CC43462 for ; Sun, 11 Apr 2021 12:29:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A7EA611AD for ; Sun, 11 Apr 2021 12:29:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235529AbhDKM35 (ORCPT ); Sun, 11 Apr 2021 08:29:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:51440 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235482AbhDKM34 (ORCPT ); Sun, 11 Apr 2021 08:29:56 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C823B610C8; Sun, 11 Apr 2021 12:29:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618144180; bh=tzT5vkcO8joaGE21p1DuB13TmPf4Wgo2/ZOy6nnQofw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K4LINrIkP3BhE8w+botLGu1HnuG8q+f7h8zZHhgFgasibep0m7KhHGGO0PG5oF9+5 QmvqFc6CeSWFeV7q2ooYTc6gjRZgJqBszihI7u8DHxNB5NE9F4SGrEuLGH7PvIcoyQ QofZ0+E4SziTqZXuzXWsy9mEbKWbwsJHRu2UTHbh39HO+fEuNLiJ86g+V8GCufze25 PmJLE6wq98YjIKWyfEUhn+qzJqQrn3bAkntIdmsXWJWgtnnruM5LI1L0NERbYqbtDc +vFab+kiOZ0AjUPiPV4Ja6SoLlmc+E4ixrzJC5pqdTy1ny6RsApXoanoJxADw2bfoL MYeKJpLbgkAFg== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Maor Gottlieb , linux-api@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed , Yishai Hadas Subject: [PATCH rdma-next v1 4/7] RDMA/mlx5: Re-organize the DM code Date: Sun, 11 Apr 2021 15:29:21 +0300 Message-Id: <20210411122924.60230-5-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210411122924.60230-1-leon@kernel.org> References: <20210411122924.60230-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maor Gottlieb 1. Inline the checks from check_dm_type_support() into their respective allocation functions. 2. Fix use after free when driver fails to copy the MEMIC address to the user by moving the allocation code into their respective functions, hence we avoid the explicit call to free the DM in the error flow. 3. Split mlx5_ib_dm struct to memic and icm proper typesafety throughout. Fixes: dc2316eba73f ("IB/mlx5: Fix device memory flows") Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx5/dm.c | 193 ++++++++++++++---------------- drivers/infiniband/hw/mlx5/dm.h | 29 +++-- drivers/infiniband/hw/mlx5/main.c | 8 +- 3 files changed, 114 insertions(+), 116 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c index 21fefcd405ef..29eb5c9df3a4 100644 --- a/drivers/infiniband/hw/mlx5/dm.c +++ b/drivers/infiniband/hw/mlx5/dm.c @@ -112,64 +112,50 @@ void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, } static int add_dm_mmap_entry(struct ib_ucontext *context, - struct mlx5_ib_dm *mdm, u64 address) + struct mlx5_ib_dm_memic *mdm, u64 address) { mdm->mentry.mmap_flag = MLX5_IB_MMAP_TYPE_MEMIC; mdm->mentry.address = address; return rdma_user_mmap_entry_insert_range( - context, &mdm->mentry.rdma_entry, mdm->size, + context, &mdm->mentry.rdma_entry, mdm->base.size, MLX5_IB_MMAP_DEVICE_MEM << 16, (MLX5_IB_MMAP_DEVICE_MEM << 16) + (1UL << 16) - 1); } -static inline int check_dm_type_support(struct mlx5_ib_dev *dev, u32 type) -{ - switch (type) { - case MLX5_IB_UAPI_DM_TYPE_MEMIC: - if (!MLX5_CAP_DEV_MEM(dev->mdev, memic)) - return -EOPNOTSUPP; - break; - case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: - case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: - if (!capable(CAP_SYS_RAWIO) || !capable(CAP_NET_RAW)) - return -EPERM; - - if (!(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) || - MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner) || - MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2) || - MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner_v2))) - return -EOPNOTSUPP; - break; - } - - return 0; -} - -static int handle_alloc_dm_memic(struct ib_ucontext *ctx, struct mlx5_ib_dm *dm, - struct ib_dm_alloc_attr *attr, - struct uverbs_attr_bundle *attrs) +static struct ib_dm *handle_alloc_dm_memic(struct ib_ucontext *ctx, + struct ib_dm_alloc_attr *attr, + struct uverbs_attr_bundle *attrs) { struct mlx5_dm *dm_db = &to_mdev(ctx->device)->dm; + struct mlx5_ib_dm_memic *dm; u64 start_offset; u16 page_idx; int err; u64 address; - dm->size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE); + if (!MLX5_CAP_DEV_MEM(dm_db->dev, memic)) + return ERR_PTR(-EOPNOTSUPP); + + dm = kzalloc(sizeof(*dm), GFP_KERNEL); + if (!dm) + return ERR_PTR(-ENOMEM); + + dm->base.type = MLX5_IB_UAPI_DM_TYPE_MEMIC; + dm->base.size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE); - err = mlx5_cmd_alloc_memic(dm_db, &dm->dev_addr, - dm->size, attr->alignment); + err = mlx5_cmd_alloc_memic(dm_db, &dm->base.dev_addr, + dm->base.size, attr->alignment); if (err) { kfree(dm); - return err; + return ERR_PTR(err); } - address = dm->dev_addr & PAGE_MASK; + address = dm->base.dev_addr & PAGE_MASK; err = add_dm_mmap_entry(ctx, dm, address); if (err) { - mlx5_cmd_dealloc_memic(dm_db, dm->dev_addr, dm->size); + mlx5_cmd_dealloc_memic(dm_db, dm->base.dev_addr, dm->base.size); kfree(dm); - return err; + return ERR_PTR(err); } page_idx = dm->mentry.rdma_entry.start_pgoff & 0xFFFF; @@ -180,51 +166,74 @@ static int handle_alloc_dm_memic(struct ib_ucontext *ctx, struct mlx5_ib_dm *dm, if (err) goto err_copy; - start_offset = dm->dev_addr & ~PAGE_MASK; + start_offset = dm->base.dev_addr & ~PAGE_MASK; err = uverbs_copy_to(attrs, MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, &start_offset, sizeof(start_offset)); if (err) goto err_copy; - return 0; + return &dm->base.ibdm; err_copy: rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); - - return err; + return ERR_PTR(err); } -static int handle_alloc_dm_sw_icm(struct ib_ucontext *ctx, - struct mlx5_ib_dm *dm, - struct ib_dm_alloc_attr *attr, - struct uverbs_attr_bundle *attrs, int type) +static struct ib_dm *handle_alloc_dm_sw_icm(struct ib_ucontext *ctx, + struct ib_dm_alloc_attr *attr, + struct uverbs_attr_bundle *attrs, + int type) { struct mlx5_core_dev *dev = to_mdev(ctx->device)->mdev; + struct mlx5_ib_dm_icm *dm; u64 act_size; int err; + dm = kzalloc(sizeof(*dm), GFP_KERNEL); + if (!dm) + return ERR_PTR(-ENOMEM); + + dm->base.type = type; + + if (!capable(CAP_SYS_RAWIO) || !capable(CAP_NET_RAW)) { + err = -EPERM; + goto free; + } + + if (!(MLX5_CAP_FLOWTABLE_NIC_RX(dev, sw_owner) || + MLX5_CAP_FLOWTABLE_NIC_TX(dev, sw_owner) || + MLX5_CAP_FLOWTABLE_NIC_RX(dev, sw_owner_v2) || + MLX5_CAP_FLOWTABLE_NIC_TX(dev, sw_owner_v2))) { + err = -EOPNOTSUPP; + goto free; + } + /* Allocation size must a multiple of the basic block size * and a power of 2. */ act_size = round_up(attr->length, MLX5_SW_ICM_BLOCK_SIZE(dev)); act_size = roundup_pow_of_two(act_size); - dm->size = act_size; + dm->base.size = act_size; err = mlx5_dm_sw_icm_alloc(dev, type, act_size, attr->alignment, - to_mucontext(ctx)->devx_uid, &dm->dev_addr, - &dm->icm_dm.obj_id); + to_mucontext(ctx)->devx_uid, + &dm->base.dev_addr, &dm->obj_id); if (err) - return err; + goto free; err = uverbs_copy_to(attrs, MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, - &dm->dev_addr, sizeof(dm->dev_addr)); - if (err) - mlx5_dm_sw_icm_dealloc(dev, type, dm->size, + &dm->base.dev_addr, sizeof(dm->base.dev_addr)); + if (err) { + mlx5_dm_sw_icm_dealloc(dev, type, dm->base.size, to_mucontext(ctx)->devx_uid, - dm->dev_addr, dm->icm_dm.obj_id); - - return err; + dm->base.dev_addr, dm->obj_id); + goto free; + } + return &dm->base.ibdm; +free: + kfree(dm); + return ERR_PTR(err); } struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, @@ -232,7 +241,6 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, struct ib_dm_alloc_attr *attr, struct uverbs_attr_bundle *attrs) { - struct mlx5_ib_dm *dm; enum mlx5_ib_uapi_dm_type type; int err; @@ -245,80 +253,59 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, mlx5_ib_dbg(to_mdev(ibdev), "alloc_dm req: dm_type=%d user_length=0x%llx log_alignment=%d\n", type, attr->length, attr->alignment); - err = check_dm_type_support(to_mdev(ibdev), type); - if (err) - return ERR_PTR(err); - - dm = kzalloc(sizeof(*dm), GFP_KERNEL); - if (!dm) - return ERR_PTR(-ENOMEM); - - dm->type = type; - switch (type) { case MLX5_IB_UAPI_DM_TYPE_MEMIC: - err = handle_alloc_dm_memic(context, dm, - attr, - attrs); - break; + return handle_alloc_dm_memic(context, attr, attrs); case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: - err = handle_alloc_dm_sw_icm(context, dm, - attr, attrs, + return handle_alloc_dm_sw_icm(context, attr, attrs, MLX5_SW_ICM_TYPE_STEERING); - break; case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: - err = handle_alloc_dm_sw_icm(context, dm, - attr, attrs, - MLX5_SW_ICM_TYPE_HEADER_MODIFY); - break; + return handle_alloc_dm_sw_icm(context, attr, attrs, + MLX5_SW_ICM_TYPE_HEADER_MODIFY); default: - err = -EOPNOTSUPP; + return ERR_PTR(-EOPNOTSUPP); } +} - if (err) - goto err_free; +static void mlx5_dm_memic_dealloc(struct mlx5_ib_dm_memic *dm) +{ + rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); +} - return &dm->ibdm; +static int mlx5_dm_icm_dealloc(struct mlx5_ib_ucontext *ctx, + struct mlx5_ib_dm_icm *dm) +{ + enum mlx5_sw_icm_type type = + dm->base.type == MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM ? + MLX5_SW_ICM_TYPE_STEERING : + MLX5_SW_ICM_TYPE_HEADER_MODIFY; + struct mlx5_core_dev *dev = to_mdev(dm->base.ibdm.device)->mdev; + int err; -err_free: - kfree(dm); - return ERR_PTR(err); + err = mlx5_dm_sw_icm_dealloc(dev, type, dm->base.size, ctx->devx_uid, + dm->base.dev_addr, dm->obj_id); + if (!err) + kfree(dm); + return 0; } -int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs) +static int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, + struct uverbs_attr_bundle *attrs) { struct mlx5_ib_ucontext *ctx = rdma_udata_to_drv_context( &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); - struct mlx5_core_dev *dev = to_mdev(ibdm->device)->mdev; struct mlx5_ib_dm *dm = to_mdm(ibdm); - int ret; switch (dm->type) { case MLX5_IB_UAPI_DM_TYPE_MEMIC: - rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); + mlx5_dm_memic_dealloc(to_memic(ibdm)); return 0; case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: - ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_STEERING, - dm->size, ctx->devx_uid, - dm->dev_addr, dm->icm_dm.obj_id); - if (ret) - return ret; - break; case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: - ret = mlx5_dm_sw_icm_dealloc(dev, - MLX5_SW_ICM_TYPE_HEADER_MODIFY, - dm->size, ctx->devx_uid, - dm->dev_addr, dm->icm_dm.obj_id); - if (ret) - return ret; - break; + return mlx5_dm_icm_dealloc(ctx, to_icm(ibdm)); default: return -EOPNOTSUPP; } - - kfree(dm); - - return 0; } ADD_UVERBS_ATTRIBUTES_SIMPLE( diff --git a/drivers/infiniband/hw/mlx5/dm.h b/drivers/infiniband/hw/mlx5/dm.h index f8ff5d7fd7c5..39e66b51264d 100644 --- a/drivers/infiniband/hw/mlx5/dm.h +++ b/drivers/infiniband/hw/mlx5/dm.h @@ -8,34 +8,45 @@ #include "mlx5_ib.h" - extern const struct ib_device_ops mlx5_ib_dev_dm_ops; extern const struct uapi_definition mlx5_ib_dm_defs[]; struct mlx5_ib_dm { struct ib_dm ibdm; - phys_addr_t dev_addr; u32 type; + phys_addr_t dev_addr; size_t size; - union { - struct { - u32 obj_id; - } icm_dm; - /* other dm types specific params should be added here */ - }; +}; + +struct mlx5_ib_dm_memic { + struct mlx5_ib_dm base; struct mlx5_user_mmap_entry mentry; }; +struct mlx5_ib_dm_icm { + struct mlx5_ib_dm base; + u32 obj_id; +}; + static inline struct mlx5_ib_dm *to_mdm(struct ib_dm *ibdm) { return container_of(ibdm, struct mlx5_ib_dm, ibdm); } +static inline struct mlx5_ib_dm_memic *to_memic(struct ib_dm *ibdm) +{ + return container_of(ibdm, struct mlx5_ib_dm_memic, base.ibdm); +} + +static inline struct mlx5_ib_dm_icm *to_icm(struct ib_dm *ibdm) +{ + return container_of(ibdm, struct mlx5_ib_dm_icm, base.ibdm); +} + struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_dm_alloc_attr *attr, struct uverbs_attr_bundle *attrs); -int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs); void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length); diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index b069e2610bd0..dea3daa4d8d6 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2090,13 +2090,13 @@ static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry) struct mlx5_user_mmap_entry *mentry = to_mmmap(entry); struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device); struct mlx5_var_table *var_table = &dev->var_table; - struct mlx5_ib_dm *mdm; + struct mlx5_ib_dm_memic *mdm; switch (mentry->mmap_flag) { case MLX5_IB_MMAP_TYPE_MEMIC: - mdm = container_of(mentry, struct mlx5_ib_dm, mentry); - mlx5_cmd_dealloc_memic(&dev->dm, mdm->dev_addr, - mdm->size); + mdm = container_of(mentry, struct mlx5_ib_dm_memic, mentry); + mlx5_cmd_dealloc_memic(&dev->dm, mdm->base.dev_addr, + mdm->base.size); kfree(mdm); break; case MLX5_IB_MMAP_TYPE_VAR: From patchwork Sun Apr 11 12:29:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 419873 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3D42C43460 for ; Sun, 11 Apr 2021 12:29:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE283610C8 for ; Sun, 11 Apr 2021 12:29:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235582AbhDKMaN (ORCPT ); Sun, 11 Apr 2021 08:30:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:51644 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235531AbhDKMaK (ORCPT ); Sun, 11 Apr 2021 08:30:10 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 240E860FF1; Sun, 11 Apr 2021 12:29:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618144193; bh=GZMmqpPdvU+m4feeQJfbUdupGoTlvZ75j3aqd5osECA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FEyVJ2V94NroaRFhfkZ93Z7s1otjV4vyz+akH72zgb0uEOOIZ/3EjvPfh0UCTy13F 5Jo7KjSGnoTGnbbTpAW8yXpHM7rKzeYVMiBMN7Bt2cNtvN9M6GnVX1BT/n3KeDUuf3 GuQ6h6bdNWuWkLPoFqNFeIDgM0i55KYo4F+B7aLsruQePEa5fOP9cY9lwKA6zLZqfu OPTTsms37xwWr2i/WAGU6ac1iaB/8zkrxll8TEEhi61+PjTAi3PvBjwRmfYrhWc64r 4o6c2eDcykNw6wZ4uJO1dMLUGfqje7OaZRRW7ffnFuiZSiaBdjRJhvHZLM5A5HwKgR PU2MoFrHBPlNw== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Maor Gottlieb , linux-api@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed , Yishai Hadas Subject: [PATCH rdma-next v1 5/7] RDMA/mlx5: Add support to MODIFY_MEMIC command Date: Sun, 11 Apr 2021 15:29:22 +0300 Message-Id: <20210411122924.60230-6-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210411122924.60230-1-leon@kernel.org> References: <20210411122924.60230-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maor Gottlieb Add two functions to allocate and deallocate MEMIC operations by using the MODIFY_MEMIC command. Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx5/dm.c | 36 +++++++++++++++++++++++++++++++++ drivers/infiniband/hw/mlx5/dm.h | 2 ++ 2 files changed, 38 insertions(+) diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c index 29eb5c9df3a4..a648554210f8 100644 --- a/drivers/infiniband/hw/mlx5/dm.c +++ b/drivers/infiniband/hw/mlx5/dm.c @@ -111,6 +111,42 @@ void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, spin_unlock(&dm->lock); } +void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, + u8 operation) +{ + u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {}; + struct mlx5_core_dev *dev = dm->dev; + + MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC); + MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_DEALLOC); + MLX5_SET(modify_memic_in, in, memic_operation_type, operation); + MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr); + + mlx5_cmd_exec_in(dev, modify_memic, in); +} + +static int mlx5_cmd_alloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, + u8 operation, phys_addr_t *op_addr) +{ + u32 out[MLX5_ST_SZ_DW(modify_memic_out)] = {}; + u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {}; + struct mlx5_core_dev *dev = dm->dev; + int err; + + MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC); + MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_ALLOC); + MLX5_SET(modify_memic_in, in, memic_operation_type, operation); + MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr); + + err = mlx5_cmd_exec_inout(dev, modify_memic, in, out); + if (err) + return err; + + *op_addr = dev->bar_addr + + MLX5_GET64(modify_memic_out, out, memic_operation_addr); + return 0; +} + static int add_dm_mmap_entry(struct ib_ucontext *context, struct mlx5_ib_dm_memic *mdm, u64 address) { diff --git a/drivers/infiniband/hw/mlx5/dm.h b/drivers/infiniband/hw/mlx5/dm.h index 39e66b51264d..6857bbdb201c 100644 --- a/drivers/infiniband/hw/mlx5/dm.h +++ b/drivers/infiniband/hw/mlx5/dm.h @@ -49,5 +49,7 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, struct uverbs_attr_bundle *attrs); void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length); +void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, + u8 operation); #endif /* _MLX5_IB_DM_H */ From patchwork Sun Apr 11 12:29:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 419874 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36669C43461 for ; Sun, 11 Apr 2021 12:29:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E60D610C8 for ; Sun, 11 Apr 2021 12:29:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235566AbhDKMaG (ORCPT ); Sun, 11 Apr 2021 08:30:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:51538 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235557AbhDKMaD (ORCPT ); Sun, 11 Apr 2021 08:30:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7B57F60FF1; Sun, 11 Apr 2021 12:29:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618144187; bh=vdEKiQr5UMjMh9WW+eSmS2Lw2eZ4qYO7d5k7HCd/SyA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f2ordb0uP5eUTOIWeZe6AGFau2ic6K+GiAPz5QUcEvElNeW8SyBQxnhbouRn6QZ3t ko9VEdpIvadgL7gfNGub/3+pQ8UIclFx3IX8uHDKpLcgATKURTSl8xyeaShe5148eJ Qt9G2JsWa/UMEY5j5AjdF7yGhWaHInT/eZkieFkQj5DkcDCsNvACIBhg6qckj+YS2n y4UpzieVhyMy5Nw1Dt1So5dOwLA1twn2oSUOIhUZo6kk7+wLT78cp3fXnrIMvCkHvE 8ZPOJHRLW+X+QmMK8AViamNvbWKzyonqQ/WfnPEO3H1nMP6nGOEbqcAWDa1LG5DJzp iAnOAsWy6Cbog== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Maor Gottlieb , linux-api@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed , Yishai Hadas Subject: [PATCH rdma-next v1 6/7] RDMA/mlx5: Add support in MEMIC operations Date: Sun, 11 Apr 2021 15:29:23 +0300 Message-Id: <20210411122924.60230-7-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210411122924.60230-1-leon@kernel.org> References: <20210411122924.60230-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maor Gottlieb MEMIC buffer, in addition to regular read and write operations, can support atomic operations from the host. Introduce and implement new UAPI to allocate address space for MEMIC operations such as atomic. This includes: 1. Expose new IOCTL for request mapping of MEMIC operation. 2. Hold the operations address in a list, so same operation to same DM will be allocated only once. 3. Manage refcount on the mlx5_ib_dm object, so it would be keep valid until all addresses were unmapped. Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx5/dm.c | 192 +++++++++++++++++++++-- drivers/infiniband/hw/mlx5/dm.h | 12 ++ drivers/infiniband/hw/mlx5/main.c | 7 +- drivers/infiniband/hw/mlx5/mlx5_ib.h | 1 + include/uapi/rdma/mlx5_user_ioctl_cmds.h | 11 ++ 5 files changed, 209 insertions(+), 14 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c index a648554210f8..bec0489428f8 100644 --- a/drivers/infiniband/hw/mlx5/dm.c +++ b/drivers/infiniband/hw/mlx5/dm.c @@ -148,16 +148,126 @@ static int mlx5_cmd_alloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, } static int add_dm_mmap_entry(struct ib_ucontext *context, - struct mlx5_ib_dm_memic *mdm, u64 address) + struct mlx5_user_mmap_entry *mentry, u8 mmap_flag, + size_t size, u64 address) { - mdm->mentry.mmap_flag = MLX5_IB_MMAP_TYPE_MEMIC; - mdm->mentry.address = address; + mentry->mmap_flag = mmap_flag; + mentry->address = address; + return rdma_user_mmap_entry_insert_range( - context, &mdm->mentry.rdma_entry, mdm->base.size, + context, &mentry->rdma_entry, size, MLX5_IB_MMAP_DEVICE_MEM << 16, (MLX5_IB_MMAP_DEVICE_MEM << 16) + (1UL << 16) - 1); } +static void mlx5_ib_dm_memic_free(struct kref *kref) +{ + struct mlx5_ib_dm_memic *dm = + container_of(kref, struct mlx5_ib_dm_memic, ref); + struct mlx5_ib_dev *dev = to_mdev(dm->base.ibdm.device); + + mlx5_cmd_dealloc_memic(&dev->dm, dm->base.dev_addr, dm->base.size); + kfree(dm); +} + +static int copy_op_to_user(struct mlx5_ib_dm_op_entry *op_entry, + struct uverbs_attr_bundle *attrs) +{ + u64 start_offset; + u16 page_idx; + int err; + + page_idx = op_entry->mentry.rdma_entry.start_pgoff & 0xFFFF; + start_offset = op_entry->op_addr & ~PAGE_MASK; + err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DM_MAP_OP_ADDR_RESP_PAGE_INDEX, + &page_idx, sizeof(page_idx)); + if (err) + return err; + + return uverbs_copy_to(attrs, + MLX5_IB_ATTR_DM_MAP_OP_ADDR_RESP_START_OFFSET, + &start_offset, sizeof(start_offset)); +} + +static int map_existing_op(struct mlx5_ib_dm_memic *dm, u8 op, + struct uverbs_attr_bundle *attrs) +{ + struct mlx5_ib_dm_op_entry *op_entry; + + op_entry = xa_load(&dm->ops, op); + if (!op_entry) + return -ENOENT; + + return copy_op_to_user(op_entry, attrs); +} + +static int UVERBS_HANDLER(MLX5_IB_METHOD_DM_MAP_OP_ADDR)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_uobject *uobj = uverbs_attr_get_uobject( + attrs, MLX5_IB_ATTR_DM_MAP_OP_ADDR_REQ_HANDLE); + struct mlx5_ib_dev *dev = to_mdev(uobj->context->device); + struct ib_dm *ibdm = uobj->object; + struct mlx5_ib_dm_memic *dm = to_memic(ibdm); + struct mlx5_ib_dm_op_entry *op_entry; + int err; + u8 op; + + err = uverbs_copy_from(&op, attrs, MLX5_IB_ATTR_DM_MAP_OP_ADDR_REQ_OP); + if (err) + return err; + + if (!(MLX5_CAP_DEV_MEM(dev->mdev, memic_operations) & BIT(op))) + return -EOPNOTSUPP; + + mutex_lock(&dm->ops_xa_lock); + err = map_existing_op(dm, op, attrs); + if (!err || err != -ENOENT) + goto err_unlock; + + op_entry = kzalloc(sizeof(*op_entry), GFP_KERNEL); + if (!op_entry) + goto err_unlock; + + err = mlx5_cmd_alloc_memic_op(&dev->dm, dm->base.dev_addr, op, + &op_entry->op_addr); + if (err) { + kfree(op_entry); + goto err_unlock; + } + op_entry->op = op; + op_entry->dm = dm; + + err = add_dm_mmap_entry(uobj->context, &op_entry->mentry, + MLX5_IB_MMAP_TYPE_MEMIC_OP, dm->base.size, + op_entry->op_addr & PAGE_MASK); + if (err) { + mlx5_cmd_dealloc_memic_op(&dev->dm, dm->base.dev_addr, op); + kfree(op_entry); + goto err_unlock; + } + /* From this point, entry will be freed by mmap_free */ + kref_get(&dm->ref); + + err = copy_op_to_user(op_entry, attrs); + if (err) + goto err_remove; + + err = xa_insert(&dm->ops, op, op_entry, GFP_KERNEL); + if (err) + goto err_remove; + mutex_unlock(&dm->ops_xa_lock); + + return 0; + +err_remove: + rdma_user_mmap_entry_remove(&op_entry->mentry.rdma_entry); +err_unlock: + mutex_unlock(&dm->ops_xa_lock); + + return err; +} + static struct ib_dm *handle_alloc_dm_memic(struct ib_ucontext *ctx, struct ib_dm_alloc_attr *attr, struct uverbs_attr_bundle *attrs) @@ -178,6 +288,11 @@ static struct ib_dm *handle_alloc_dm_memic(struct ib_ucontext *ctx, dm->base.type = MLX5_IB_UAPI_DM_TYPE_MEMIC; dm->base.size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE); + dm->base.ibdm.device = ctx->device; + + kref_init(&dm->ref); + xa_init(&dm->ops); + mutex_init(&dm->ops_xa_lock); err = mlx5_cmd_alloc_memic(dm_db, &dm->base.dev_addr, dm->base.size, attr->alignment); @@ -187,7 +302,8 @@ static struct ib_dm *handle_alloc_dm_memic(struct ib_ucontext *ctx, } address = dm->base.dev_addr & PAGE_MASK; - err = add_dm_mmap_entry(ctx, dm, address); + err = add_dm_mmap_entry(ctx, &dm->mentry, MLX5_IB_MMAP_TYPE_MEMIC, + dm->base.size, address); if (err) { mlx5_cmd_dealloc_memic(dm_db, dm->base.dev_addr, dm->base.size); kfree(dm); @@ -195,10 +311,8 @@ static struct ib_dm *handle_alloc_dm_memic(struct ib_ucontext *ctx, } page_idx = dm->mentry.rdma_entry.start_pgoff & 0xFFFF; - err = uverbs_copy_to(attrs, - MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, - &page_idx, - sizeof(page_idx)); + err = uverbs_copy_to(attrs, MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, + &page_idx, sizeof(page_idx)); if (err) goto err_copy; @@ -231,6 +345,7 @@ static struct ib_dm *handle_alloc_dm_sw_icm(struct ib_ucontext *ctx, return ERR_PTR(-ENOMEM); dm->base.type = type; + dm->base.ibdm.device = ctx->device; if (!capable(CAP_SYS_RAWIO) || !capable(CAP_NET_RAW)) { err = -EPERM; @@ -303,8 +418,22 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, } } +static void dm_memic_remove_ops(struct mlx5_ib_dm_memic *dm) +{ + struct mlx5_ib_dm_op_entry *entry; + unsigned long idx; + + mutex_lock(&dm->ops_xa_lock); + xa_for_each(&dm->ops, idx, entry) { + xa_erase(&dm->ops, idx); + rdma_user_mmap_entry_remove(&entry->mentry.rdma_entry); + } + mutex_unlock(&dm->ops_xa_lock); +} + static void mlx5_dm_memic_dealloc(struct mlx5_ib_dm_memic *dm) { + dm_memic_remove_ops(dm); rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); } @@ -344,6 +473,31 @@ static int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, } } +void mlx5_ib_dm_mmap_free(struct mlx5_ib_dev *dev, + struct mlx5_user_mmap_entry *mentry) +{ + struct mlx5_ib_dm_op_entry *op_entry; + struct mlx5_ib_dm_memic *mdm; + + switch (mentry->mmap_flag) { + case MLX5_IB_MMAP_TYPE_MEMIC: + mdm = container_of(mentry, struct mlx5_ib_dm_memic, mentry); + kref_put(&mdm->ref, mlx5_ib_dm_memic_free); + break; + case MLX5_IB_MMAP_TYPE_MEMIC_OP: + op_entry = container_of(mentry, struct mlx5_ib_dm_op_entry, + mentry); + mdm = op_entry->dm; + mlx5_cmd_dealloc_memic_op(&dev->dm, mdm->base.dev_addr, + op_entry->op); + kfree(op_entry); + kref_put(&mdm->ref, mlx5_ib_dm_memic_free); + break; + default: + WARN_ON(true); + } +} + ADD_UVERBS_ATTRIBUTES_SIMPLE( mlx5_ib_dm, UVERBS_OBJECT_DM, UVERBS_METHOD_DM_ALLOC, UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, @@ -353,8 +507,28 @@ ADD_UVERBS_ATTRIBUTES_SIMPLE( UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE, enum mlx5_ib_uapi_dm_type, UA_OPTIONAL)); +DECLARE_UVERBS_NAMED_METHOD( + MLX5_IB_METHOD_DM_MAP_OP_ADDR, + UVERBS_ATTR_IDR(MLX5_IB_ATTR_DM_MAP_OP_ADDR_REQ_HANDLE, + UVERBS_OBJECT_DM, + UVERBS_ACCESS_READ, + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DM_MAP_OP_ADDR_REQ_OP, + UVERBS_ATTR_TYPE(u8), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DM_MAP_OP_ADDR_RESP_START_OFFSET, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DM_MAP_OP_ADDR_RESP_PAGE_INDEX, + UVERBS_ATTR_TYPE(u16), + UA_OPTIONAL)); + +DECLARE_UVERBS_GLOBAL_METHODS(UVERBS_OBJECT_DM, + &UVERBS_METHOD(MLX5_IB_METHOD_DM_MAP_OP_ADDR)); + const struct uapi_definition mlx5_ib_dm_defs[] = { UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_DM), {}, }; diff --git a/drivers/infiniband/hw/mlx5/dm.h b/drivers/infiniband/hw/mlx5/dm.h index 6857bbdb201c..4d0ffad29d8f 100644 --- a/drivers/infiniband/hw/mlx5/dm.h +++ b/drivers/infiniband/hw/mlx5/dm.h @@ -18,9 +18,19 @@ struct mlx5_ib_dm { size_t size; }; +struct mlx5_ib_dm_op_entry { + struct mlx5_user_mmap_entry mentry; + phys_addr_t op_addr; + struct mlx5_ib_dm_memic *dm; + u8 op; +}; + struct mlx5_ib_dm_memic { struct mlx5_ib_dm base; struct mlx5_user_mmap_entry mentry; + struct xarray ops; + struct mutex ops_xa_lock; + struct kref ref; }; struct mlx5_ib_dm_icm { @@ -47,6 +57,8 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_dm_alloc_attr *attr, struct uverbs_attr_bundle *attrs); +void mlx5_ib_dm_mmap_free(struct mlx5_ib_dev *dev, + struct mlx5_user_mmap_entry *mentry); void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length); void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index dea3daa4d8d6..5f1c76b8dcb1 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2090,14 +2090,11 @@ static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry) struct mlx5_user_mmap_entry *mentry = to_mmmap(entry); struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device); struct mlx5_var_table *var_table = &dev->var_table; - struct mlx5_ib_dm_memic *mdm; switch (mentry->mmap_flag) { case MLX5_IB_MMAP_TYPE_MEMIC: - mdm = container_of(mentry, struct mlx5_ib_dm_memic, mentry); - mlx5_cmd_dealloc_memic(&dev->dm, mdm->base.dev_addr, - mdm->base.size); - kfree(mdm); + case MLX5_IB_MMAP_TYPE_MEMIC_OP: + mlx5_ib_dm_mmap_free(dev, mentry); break; case MLX5_IB_MMAP_TYPE_VAR: mutex_lock(&var_table->bitmap_lock); diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 1c6dbaec22c7..e9a3f34a30b8 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -166,6 +166,7 @@ enum mlx5_ib_mmap_type { MLX5_IB_MMAP_TYPE_VAR = 2, MLX5_IB_MMAP_TYPE_UAR_WC = 3, MLX5_IB_MMAP_TYPE_UAR_NC = 4, + MLX5_IB_MMAP_TYPE_MEMIC_OP = 5, }; struct mlx5_bfreg_info { diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h index 3f0bc7597ba7..c6fbc5211717 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h +++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h @@ -41,6 +41,17 @@ enum mlx5_ib_create_flow_action_attrs { MLX5_IB_ATTR_CREATE_FLOW_ACTION_FLAGS = (1U << UVERBS_ID_NS_SHIFT), }; +enum mlx5_ib_dm_methods { + MLX5_IB_METHOD_DM_MAP_OP_ADDR = (1U << UVERBS_ID_NS_SHIFT), +}; + +enum mlx5_ib_dm_map_op_addr_attrs { + MLX5_IB_ATTR_DM_MAP_OP_ADDR_REQ_HANDLE = (1U << UVERBS_ID_NS_SHIFT), + MLX5_IB_ATTR_DM_MAP_OP_ADDR_REQ_OP, + MLX5_IB_ATTR_DM_MAP_OP_ADDR_RESP_START_OFFSET, + MLX5_IB_ATTR_DM_MAP_OP_ADDR_RESP_PAGE_INDEX, +}; + enum mlx5_ib_alloc_dm_attrs { MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET = (1U << UVERBS_ID_NS_SHIFT), MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, From patchwork Sun Apr 11 12:29:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 419472 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C06A5C433B4 for ; Sun, 11 Apr 2021 12:29:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 97658610CB for ; Sun, 11 Apr 2021 12:29:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235581AbhDKMaI (ORCPT ); Sun, 11 Apr 2021 08:30:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:51584 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235531AbhDKMaG (ORCPT ); Sun, 11 Apr 2021 08:30:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id CF0E560FF1; Sun, 11 Apr 2021 12:29:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618144190; bh=z9CBGyAh7zyEaDjGnleco1PXy+Wz1Vf3AA0ontwVqDI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kquAPUa2vilFuhhyZvVEK2NAYD5KUOLaFkJFqPvIoG26sEX1b8wOarXXWAMxKH+hY 6Lg9ER/geo22Lf7DjVdoklZYWW3lqlQUrkdiNRw4SPtx435wdBT3bciqjD688CVg4K HJsZ98IZAjL22qpggp12CBw2TQ1iH9B4KaUhiSFzq0QeGSsv44UdXuFDAoPgqDQ2eU msIjvhrvOYEbqzXWVkOxuZx/xwyJtEBf/TSDi8ktBelD5P0WrgcU5Zg6CnafKb33gK WYBPnoURe4kvhYHep9uYqamXl+zFrzwSbsP1ZcfBJCJrVq60v9UWy5mKb/ZHznOo4U hGPXeE/9LDSGw== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Maor Gottlieb , linux-api@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed , Yishai Hadas Subject: [PATCH rdma-next v1 7/7] RDMA/mlx5: Expose UAPI to query DM Date: Sun, 11 Apr 2021 15:29:24 +0300 Message-Id: <20210411122924.60230-8-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210411122924.60230-1-leon@kernel.org> References: <20210411122924.60230-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maor Gottlieb Expose UAPI to query MEMIC DM, this will let user space application that didn't allocate the DM but has access to by owning the matching command FD to retrieve its information. Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx5/dm.c | 47 +++++++++++++++++++++++- drivers/infiniband/hw/mlx5/dm.h | 1 + include/uapi/rdma/mlx5_user_ioctl_cmds.h | 8 ++++ 3 files changed, 55 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c index bec0489428f8..235aad6beacb 100644 --- a/drivers/infiniband/hw/mlx5/dm.c +++ b/drivers/infiniband/hw/mlx5/dm.c @@ -293,6 +293,7 @@ static struct ib_dm *handle_alloc_dm_memic(struct ib_ucontext *ctx, kref_init(&dm->ref); xa_init(&dm->ops); mutex_init(&dm->ops_xa_lock); + dm->req_length = attr->length; err = mlx5_cmd_alloc_memic(dm_db, &dm->base.dev_addr, dm->base.size, attr->alignment); @@ -473,6 +474,38 @@ static int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, } } +static int UVERBS_HANDLER(MLX5_IB_METHOD_DM_QUERY)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_dm *ibdm = + uverbs_attr_get_obj(attrs, MLX5_IB_ATTR_QUERY_DM_REQ_HANDLE); + struct mlx5_ib_dm *dm = to_mdm(ibdm); + struct mlx5_ib_dm_memic *memic; + u64 start_offset; + u16 page_idx; + int err; + + if (dm->type != MLX5_IB_UAPI_DM_TYPE_MEMIC) + return -EOPNOTSUPP; + + memic = to_memic(ibdm); + page_idx = memic->mentry.rdma_entry.start_pgoff & 0xFFFF; + err = uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_DM_RESP_PAGE_INDEX, + &page_idx, sizeof(page_idx)); + if (err) + return err; + + start_offset = memic->base.dev_addr & ~PAGE_MASK; + err = uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_DM_RESP_START_OFFSET, + &start_offset, sizeof(start_offset)); + if (err) + return err; + + return uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_DM_RESP_LENGTH, + &memic->req_length, + sizeof(memic->req_length)); +} + void mlx5_ib_dm_mmap_free(struct mlx5_ib_dev *dev, struct mlx5_user_mmap_entry *mentry) { @@ -498,6 +531,17 @@ void mlx5_ib_dm_mmap_free(struct mlx5_ib_dev *dev, } } +DECLARE_UVERBS_NAMED_METHOD( + MLX5_IB_METHOD_DM_QUERY, + UVERBS_ATTR_IDR(MLX5_IB_ATTR_QUERY_DM_REQ_HANDLE, UVERBS_OBJECT_DM, + UVERBS_ACCESS_READ, UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_DM_RESP_START_OFFSET, + UVERBS_ATTR_TYPE(u64), UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_DM_RESP_PAGE_INDEX, + UVERBS_ATTR_TYPE(u16), UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_DM_RESP_LENGTH, + UVERBS_ATTR_TYPE(u64), UA_MANDATORY)); + ADD_UVERBS_ATTRIBUTES_SIMPLE( mlx5_ib_dm, UVERBS_OBJECT_DM, UVERBS_METHOD_DM_ALLOC, UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, @@ -524,7 +568,8 @@ DECLARE_UVERBS_NAMED_METHOD( UA_OPTIONAL)); DECLARE_UVERBS_GLOBAL_METHODS(UVERBS_OBJECT_DM, - &UVERBS_METHOD(MLX5_IB_METHOD_DM_MAP_OP_ADDR)); + &UVERBS_METHOD(MLX5_IB_METHOD_DM_MAP_OP_ADDR), + &UVERBS_METHOD(MLX5_IB_METHOD_DM_QUERY)); const struct uapi_definition mlx5_ib_dm_defs[] = { UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm), diff --git a/drivers/infiniband/hw/mlx5/dm.h b/drivers/infiniband/hw/mlx5/dm.h index 4d0ffad29d8f..9674a80d8d70 100644 --- a/drivers/infiniband/hw/mlx5/dm.h +++ b/drivers/infiniband/hw/mlx5/dm.h @@ -31,6 +31,7 @@ struct mlx5_ib_dm_memic { struct xarray ops; struct mutex ops_xa_lock; struct kref ref; + size_t req_length; }; struct mlx5_ib_dm_icm { diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h index c6fbc5211717..3798cbcb9021 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h +++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h @@ -43,6 +43,7 @@ enum mlx5_ib_create_flow_action_attrs { enum mlx5_ib_dm_methods { MLX5_IB_METHOD_DM_MAP_OP_ADDR = (1U << UVERBS_ID_NS_SHIFT), + MLX5_IB_METHOD_DM_QUERY, }; enum mlx5_ib_dm_map_op_addr_attrs { @@ -52,6 +53,13 @@ enum mlx5_ib_dm_map_op_addr_attrs { MLX5_IB_ATTR_DM_MAP_OP_ADDR_RESP_PAGE_INDEX, }; +enum mlx5_ib_query_dm_attrs { + MLX5_IB_ATTR_QUERY_DM_REQ_HANDLE = (1U << UVERBS_ID_NS_SHIFT), + MLX5_IB_ATTR_QUERY_DM_RESP_START_OFFSET, + MLX5_IB_ATTR_QUERY_DM_RESP_PAGE_INDEX, + MLX5_IB_ATTR_QUERY_DM_RESP_LENGTH, +}; + enum mlx5_ib_alloc_dm_attrs { MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET = (1U << UVERBS_ID_NS_SHIFT), MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,