From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0443FF8875 for ; Thu, 30 Apr 2026 10:18:59 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 617A24067C; Thu, 30 Apr 2026 12:18:38 +0200 (CEST) Received: from cstnet.cn (smtp21.cstnet.cn [159.226.251.21]) by mails.dpdk.org (Postfix) with ESMTP id 2BDAE40615 for ; Thu, 30 Apr 2026 12:18:32 +0200 (CEST) Received: from localhost.localdomain (unknown [118.112.177.181]) by APP-01 (Coremail) with SMTP id qwCowACnUW11LPNplJjRDg--.60427S9; Thu, 30 Apr 2026 18:18:31 +0800 (CST) From: liujie5@linkdatatechnology.com To: stephen@networkplumber.org Cc: dev@dpdk.org, Jie Liu Subject: [PATCH v3 7/9] common/sxe2: add ioctl interface for DMA map and unmap Date: Thu, 30 Apr 2026 18:18:15 +0800 Message-ID: <20260430101819.4094628-8-liujie5@linkdatatechnology.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260430101819.4094628-1-liujie5@linkdatatechnology.com> References: <20260430092231.4068642-10-liujie5@linkdatatechnology.com> <20260430101819.4094628-1-liujie5@linkdatatechnology.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: qwCowACnUW11LPNplJjRDg--.60427S9 X-Coremail-Antispam: 1UD129KBjvJXoWxKFWrGF4xJFW5ZFWxtF1UJrb_yoWxGF1UpF 40gFyYqFy8ta1agF1UJw42q345Kw4Fg39rCFWxGwn3KF1qvrykZa1FgFy3Jw15CrW3JF93 AFsIkF45Cr18WrDanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPC14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_JFI_Gr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr 1l84ACjcxK6I8E87Iv67AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4UJVWx Jr1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2I x0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8 JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lw4CEc2x0rVAKj4xxMx kF7I0En4kS14v26r126r1DMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4U MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67 AKxVWUXVWUAwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF0xvE2Ix0 cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z2 80aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI 43ZEXa7VUbebkUUUUUU== X-Originating-IP: [118.112.177.181] X-CM-SenderInfo: xolxyxrhv6zxpqngt3pdwhux5qro0w31of0z/ X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org From: Jie Liu Implement DMA mapping and unmapping functionality using ioctl calls. This allows the driver to configure the hardware's IOMMU/DMA tables, ensuring the device can safely access memory buffers allocated by the userspace. The mapping is established during device initialization or queue setup and is revoked during device closure to prevent memory leaks and ensure hardware security. Signed-off-by: Jie Liu --- drivers/common/sxe2/sxe2_common.c | 48 ++++++++++ drivers/common/sxe2/sxe2_ioctl_chnl.c | 104 +++++++++++++++++++++ drivers/common/sxe2/sxe2_ioctl_chnl_func.h | 9 ++ 3 files changed, 161 insertions(+) diff --git a/drivers/common/sxe2/sxe2_common.c b/drivers/common/sxe2/sxe2_common.c index dfdefb8b78..537d4e9f6a 100644 --- a/drivers/common/sxe2/sxe2_common.c +++ b/drivers/common/sxe2/sxe2_common.c @@ -466,12 +466,60 @@ static s32 sxe2_common_pci_remove(struct rte_pci_device *pci_dev) return ret; } +static s32 sxe2_common_pci_dma_map(struct rte_pci_device *pci_dev, + void *addr, u64 iova, size_t len) +{ + struct sxe2_common_device *cdev; + s32 ret = SXE2_ERROR; + + cdev = sxe2_rtedev_to_cdev(&pci_dev->device); + if (cdev == NULL) { + ret = SXE2_ERR_NODEV; + PMD_LOG_ERR(COM, "Fail to get remove device."); + goto l_end; + } + + ret = sxe2_drv_dev_dma_map(cdev, (u64)(uintptr_t)addr, iova, len); + if (ret) { + PMD_LOG_ERR(COM, "Fail to dma map, ret=%d", ret); + goto l_end; + } + +l_end: + return ret; +} + +static s32 sxe2_common_pci_dma_unmap(struct rte_pci_device *pci_dev, + void *addr __rte_unused, u64 iova, size_t len __rte_unused) +{ + struct sxe2_common_device *cdev; + s32 ret = SXE2_ERROR; + + cdev = sxe2_rtedev_to_cdev(&pci_dev->device); + if (cdev == NULL) { + ret = SXE2_ERR_NODEV; + PMD_LOG_ERR(COM, "Fail to get remove device."); + goto l_end; + } + + ret = sxe2_drv_dev_dma_unmap(cdev, iova); + if (ret) { + PMD_LOG_ERR(COM, "Fail to dma map, ret=%d", ret); + goto l_end; + } + +l_end: + return ret; +} + static struct rte_pci_driver sxe2_common_pci_driver = { .driver = { .name = SXE2_COMMON_PCI_DRIVER_NAME, }, .probe = sxe2_common_pci_probe, .remove = sxe2_common_pci_remove, + .dma_map = sxe2_common_pci_dma_map, + .dma_unmap = sxe2_common_pci_dma_unmap, }; static u32 sxe2_common_pci_id_table_size_get(const struct rte_pci_id *id_table) diff --git a/drivers/common/sxe2/sxe2_ioctl_chnl.c b/drivers/common/sxe2/sxe2_ioctl_chnl.c index 2bd7c2b2eb..1a14d401e7 100644 --- a/drivers/common/sxe2/sxe2_ioctl_chnl.c +++ b/drivers/common/sxe2/sxe2_ioctl_chnl.c @@ -220,3 +220,107 @@ sxe2_drv_dev_munmap(struct sxe2_common_device *cdev, void *virt, u64 len) l_end: return ret; } + +RTE_EXPORT_INTERNAL_SYMBOL(sxe2_drv_dev_dma_map) +s32 +sxe2_drv_dev_dma_map(struct sxe2_common_device *cdev, u64 vaddr, + u64 iova, u64 size) +{ + struct sxe2_ioctl_iommu_dma_map cmd_params; + enum rte_iova_mode iova_mode; + s32 ret = SXE2_SUCCESS; + s32 cmd_fd = 0; + + if (cdev->config.kernel_reset) { + ret = SXE2_ERR_PERM; + PMD_LOG_WARN(COM, "kernel reseted, need restart app."); + goto l_end; + } + + iova_mode = rte_eal_iova_mode(); + if (iova_mode == RTE_IOVA_PA) { + if (cdev->config.support_iommu) { + PMD_LOG_ERR(COM, "iommu not support pa mode"); + ret = SXE2_ERR_IO; + } + goto l_end; + } else if (iova_mode == RTE_IOVA_VA) { + if (!cdev->config.support_iommu) { + PMD_LOG_ERR(COM, "no iommu not support va mode, plese use pa mode."); + ret = SXE2_ERR_IO; + goto l_end; + } + } + + cmd_fd = SXE2_CDEV_TO_CMD_FD(cdev); + if (cmd_fd < 0) { + ret = SXE2_ERR_BADF; + PMD_LOG_ERR(COM, "Failed to exec cmd, fd=%d", cmd_fd); + goto l_end; + } + + memset(&cmd_params, 0, sizeof(struct sxe2_ioctl_iommu_dma_map)); + cmd_params.vaddr = vaddr; + cmd_params.iova = iova; + cmd_params.size = size; + + rte_ticketlock_lock(&cdev->config.lock); + ret = ioctl(cmd_fd, SXE2_COM_CMD_DMA_MAP, &cmd_params); + if (ret < 0) { + PMD_LOG_ERR(COM, "Failed to dma map, fd=%d, ret=%d, err:%s", + cmd_fd, ret, strerror(errno)); + ret = SXE2_ERR_IO; + rte_ticketlock_unlock(&cdev->config.lock); + goto l_end; + } + rte_ticketlock_unlock(&cdev->config.lock); + +l_end: + return ret; +} + +RTE_EXPORT_INTERNAL_SYMBOL(sxe2_drv_dev_dma_unmap) +s32 +sxe2_drv_dev_dma_unmap(struct sxe2_common_device *cdev, u64 iova) +{ + s32 ret = SXE2_SUCCESS; + s32 cmd_fd = 0; + struct sxe2_ioctl_iommu_dma_unmap cmd_params; + + if (cdev->config.kernel_reset) { + ret = SXE2_ERR_PERM; + PMD_LOG_WARN(COM, "kernel reseted, need restart app."); + goto l_end; + } + + if (!cdev->config.support_iommu) + return SXE2_SUCCESS; + + cmd_fd = SXE2_CDEV_TO_CMD_FD(cdev); + if (cmd_fd < 0) { + ret = SXE2_ERR_BADF; + PMD_LOG_ERR(COM, "Failed to exec cmd, fd=%d", cmd_fd); + goto l_end; + } + + PMD_LOG_DEBUG(COM, "fd %d dma unmap iova=0x%"PRIX64"", + cmd_fd, iova); + + memset(&cmd_params, 0, sizeof(struct sxe2_ioctl_iommu_dma_unmap)); + cmd_params.iova = iova; + + rte_ticketlock_lock(&cdev->config.lock); + ret = ioctl(cmd_fd, SXE2_COM_CMD_DMA_UNMAP, &cmd_params); + if (ret < 0) { + PMD_LOG_INFO(COM, "Failed to dma unmap, fd=%d, ret=%d, err:%s", + cmd_fd, ret, strerror(errno)); + ret = SXE2_ERR_IO; + rte_ticketlock_unlock(&cdev->config.lock); + goto l_end; + } + rte_ticketlock_unlock(&cdev->config.lock); + +l_end: + return ret; +} + diff --git a/drivers/common/sxe2/sxe2_ioctl_chnl_func.h b/drivers/common/sxe2/sxe2_ioctl_chnl_func.h index 376c5e3ac7..e8f983e40e 100644 --- a/drivers/common/sxe2/sxe2_ioctl_chnl_func.h +++ b/drivers/common/sxe2/sxe2_ioctl_chnl_func.h @@ -47,6 +47,15 @@ __rte_internal s32 sxe2_drv_dev_munmap(struct sxe2_common_device *cdev, void *virt, u64 len); +__rte_internal +s32 +sxe2_drv_dev_dma_map(struct sxe2_common_device *cdev, u64 vaddr, + u64 iova, u64 size); + +__rte_internal +s32 +sxe2_drv_dev_dma_unmap(struct sxe2_common_device *cdev, u64 iova); + #ifdef __cplusplus } #endif -- 2.47.3