From patchwork Tue Feb 18 02:15:05 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Longfang Liu X-Patchwork-Id: 13978836 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8EF1A1E51D; Tue, 18 Feb 2025 02:15:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739844937; cv=none; b=SmEGSJErEKWQgcbtUeMbqj83wHuAD06OF76JNItok+xfoUP3HO4tbbdpHKetTUHUmats/j8G4Mj2XsJPbx6r0FLu6yqRKTbpaRFoiPUWBSs1Xh29Z6RFq8AFgkfB4gOFky4dxjvtCLE7aLo/h33o0uBuYSlG7mF0ZQ/qNvi1/3w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739844937; c=relaxed/simple; bh=cst/zJl8fcRQIuQQ6fivtqCOfHbJAXhLfmxjOqquHF0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=pG6IVn0vg0rfiGMxPhlmwFE3B1y0SUsoWpATslKaS15doQ1L9KSWnZ7ew4OaNLGuaRdft4veBMFn11LKpFw02mEwXVqxu4qGexp4EsffAAIz7Ep5EloGk2ChgFug6zbpCl+ug9EXhFlxIZ5UEGtrckkU3ejVva7QFgMjluIhTLk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.162.254]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Yxjh31S7YzkXLg; Tue, 18 Feb 2025 10:11:47 +0800 (CST) Received: from kwepemg500006.china.huawei.com (unknown [7.202.181.43]) by mail.maildlp.com (Postfix) with ESMTPS id D800D18010B; Tue, 18 Feb 2025 10:15:25 +0800 (CST) Received: from huawei.com (10.50.165.33) by kwepemg500006.china.huawei.com (7.202.181.43) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 18 Feb 2025 10:15:25 +0800 From: Longfang Liu To: , , , CC: , , , Subject: [PATCH 1/3] migration: update BAR space size Date: Tue, 18 Feb 2025 10:15:05 +0800 Message-ID: <20250218021507.40740-2-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20250218021507.40740-1-liulongfang@huawei.com> References: <20250218021507.40740-1-liulongfang@huawei.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemg500006.china.huawei.com (7.202.181.43) On the new hardware platform, the live migration configuration region is moved from VF to PF. The VF's own configuration space is restored to the complete 64KB, and there is no need to divide the size of the BAR configuration space equally. Signed-off-by: Longfang Liu --- .../vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 41 +++++++++++++++---- 1 file changed, 32 insertions(+), 9 deletions(-) diff --git a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c index 451c639299eb..599905dbb707 100644 --- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c +++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c @@ -1195,6 +1195,33 @@ static struct hisi_qm *hisi_acc_get_pf_qm(struct pci_dev *pdev) return !IS_ERR(pf_qm) ? pf_qm : NULL; } +static size_t hisi_acc_get_resource_len(struct vfio_pci_core_device *vdev, + unsigned int index) +{ + struct hisi_acc_vf_core_device *hisi_acc_vdev = + hisi_acc_drvdata(vdev->pdev); + + /* + * ACC VF dev 64KB BAR2 region consists of both functional + * register space and migration control register space, each + * uses 32KB BAR2 region, on the system with more than 64KB + * page size, even if the migration control register space + * is written by VM, it will only affects the VF. + * + * In order to support the live migration function in the + * system with a page size above 64KB, the driver needs + * to ensure that the VF region size is aligned with the + * system page size. + * + * On the new hardware platform, the live migration control register + * has been moved from VF to PF. + */ + if (hisi_acc_vdev->pf_qm->ver == QM_HW_V3) + return (pci_resource_len(vdev->pdev, index) >> 1); + + return pci_resource_len(vdev->pdev, index); +} + static int hisi_acc_pci_rw_access_check(struct vfio_device *core_vdev, size_t count, loff_t *ppos, size_t *new_count) @@ -1205,8 +1232,9 @@ static int hisi_acc_pci_rw_access_check(struct vfio_device *core_vdev, if (index == VFIO_PCI_BAR2_REGION_INDEX) { loff_t pos = *ppos & VFIO_PCI_OFFSET_MASK; - resource_size_t end = pci_resource_len(vdev->pdev, index) / 2; + resource_size_t end; + end = hisi_acc_get_resource_len(vdev, index); /* Check if access is for migration control region */ if (pos >= end) return -EINVAL; @@ -1227,8 +1255,9 @@ static int hisi_acc_vfio_pci_mmap(struct vfio_device *core_vdev, index = vma->vm_pgoff >> (VFIO_PCI_OFFSET_SHIFT - PAGE_SHIFT); if (index == VFIO_PCI_BAR2_REGION_INDEX) { u64 req_len, pgoff, req_start; - resource_size_t end = pci_resource_len(vdev->pdev, index) / 2; + resource_size_t end; + end = PAGE_ALIGN(hisi_acc_get_resource_len(vdev, index)); req_len = vma->vm_end - vma->vm_start; pgoff = vma->vm_pgoff & ((1U << (VFIO_PCI_OFFSET_SHIFT - PAGE_SHIFT)) - 1); @@ -1275,7 +1304,6 @@ static long hisi_acc_vfio_pci_ioctl(struct vfio_device *core_vdev, unsigned int if (cmd == VFIO_DEVICE_GET_REGION_INFO) { struct vfio_pci_core_device *vdev = container_of(core_vdev, struct vfio_pci_core_device, vdev); - struct pci_dev *pdev = vdev->pdev; struct vfio_region_info info; unsigned long minsz; @@ -1290,12 +1318,7 @@ static long hisi_acc_vfio_pci_ioctl(struct vfio_device *core_vdev, unsigned int if (info.index == VFIO_PCI_BAR2_REGION_INDEX) { info.offset = VFIO_PCI_INDEX_TO_OFFSET(info.index); - /* - * ACC VF dev BAR2 region consists of both functional - * register space and migration control register space. - * Report only the functional region to Guest. - */ - info.size = pci_resource_len(pdev, info.index) / 2; + info.size = hisi_acc_get_resource_len(vdev, info.index); info.flags = VFIO_REGION_INFO_FLAG_READ | VFIO_REGION_INFO_FLAG_WRITE | From patchwork Tue Feb 18 02:15:06 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Longfang Liu X-Patchwork-Id: 13978838 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A80ED29D05; 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dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4Yxjl74pwBzMqtH; Tue, 18 Feb 2025 10:14:27 +0800 (CST) Received: from kwepemg500006.china.huawei.com (unknown [7.202.181.43]) by mail.maildlp.com (Postfix) with ESMTPS id D34EC1A0188; Tue, 18 Feb 2025 10:15:56 +0800 (CST) Received: from huawei.com (10.50.165.33) by kwepemg500006.china.huawei.com (7.202.181.43) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 18 Feb 2025 10:15:56 +0800 From: Longfang Liu To: , , , CC: , , , Subject: [PATCH 2/3] migration: qm updates BAR configuration Date: Tue, 18 Feb 2025 10:15:06 +0800 Message-ID: <20250218021507.40740-3-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20250218021507.40740-1-liulongfang@huawei.com> References: <20250218021507.40740-1-liulongfang@huawei.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemg500006.china.huawei.com (7.202.181.43) On the new hardware platform, the configuration region for the live migration function of the accelerator device is no longer placed in the VF, but is instead placed in the PF. Therefore, the configuration region of the live migration function needs to be opened when the QM driver is loaded. When the QM driver is uninstalled, the driver needs to clear this configuration. Signed-off-by: Longfang Liu --- drivers/crypto/hisilicon/qm.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 19c1b5d3c954..75e2e77a8f5b 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -235,6 +235,8 @@ #define QM_AUTOSUSPEND_DELAY 3000 #define QM_DEV_ALG_MAX_LEN 256 +#define QM_MIG_REGION_SEL 0x100198 +#define QM_MIG_REGION_EN 0x1 /* abnormal status value for stopping queue */ #define QM_STOP_QUEUE_FAIL 1 @@ -2895,11 +2897,36 @@ static void qm_put_pci_res(struct hisi_qm *qm) pci_release_mem_regions(pdev); } +static void hisi_mig_region_clear(struct hisi_qm *qm) +{ + u32 val; + + /* Clear migration region set of PF */ + if (qm->fun_type == QM_HW_PF && qm->ver > QM_HW_V3) { + val = readl(qm->io_base + QM_MIG_REGION_SEL); + val &= ~BIT(0); + writel(val, qm->io_base + QM_MIG_REGION_SEL); + } +} + +static void hisi_mig_region_enable(struct hisi_qm *qm) +{ + u32 val; + + /* Select migration region of PF */ + if (qm->fun_type == QM_HW_PF && qm->ver > QM_HW_V3) { + val = readl(qm->io_base + QM_MIG_REGION_SEL); + val |= QM_MIG_REGION_EN; + writel(val, qm->io_base + QM_MIG_REGION_SEL); + } +} + static void hisi_qm_pci_uninit(struct hisi_qm *qm) { struct pci_dev *pdev = qm->pdev; pci_free_irq_vectors(pdev); + hisi_mig_region_clear(qm); qm_put_pci_res(qm); pci_disable_device(pdev); } @@ -5497,6 +5524,7 @@ int hisi_qm_init(struct hisi_qm *qm) goto err_free_qm_memory; qm_cmd_init(qm); + hisi_mig_region_enable(qm); return 0; From patchwork Tue Feb 18 02:15:07 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Longfang Liu X-Patchwork-Id: 13978839 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0CCA61E51D; Tue, 18 Feb 2025 02:16:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739844995; cv=none; b=lutn0JewvHg5bLdGDpGcg4m4aw0lJlnv2mCxDKXmfusqXnjFHDFwmDZFZFkGPBDxTp1VtD7E6rqp0yQFdCT7q3YRcBpKU89RSgpcB7zFKnDYuEZ3Ya4785O7f0CBPpX5cWiVBFP5iehqafA/mPANTpB47Ss4SI+hTwGEutHeaso= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739844995; c=relaxed/simple; bh=4pyof3JJU+48W9PMkgXpSeUzFR7S8Ks3YmrdQHCQvYs=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=NVU57UO0V6yF9RUlq99mH1f17S3edJit9JX8+Y/vAMyVk4W4612f47PwF6eoWzPMlEDXuSwA87JowdF42XGTj6CCVWEQ6qN0syuumvhoaq67CKbLnUhtSVKpkzHP7L5edKHKd9tnBPHGsIO38strGmJtbrQEBTILI/NFenDZARU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.214]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4Yxjlk4nG7zMqc9; Tue, 18 Feb 2025 10:14:58 +0800 (CST) Received: from kwepemg500006.china.huawei.com (unknown [7.202.181.43]) by mail.maildlp.com (Postfix) with ESMTPS id D1FCC1A016C; Tue, 18 Feb 2025 10:16:27 +0800 (CST) Received: from huawei.com (10.50.165.33) by kwepemg500006.china.huawei.com (7.202.181.43) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 18 Feb 2025 10:16:27 +0800 From: Longfang Liu To: , , , CC: , , , Subject: [PATCH 3/3] migration: adapt to new migration configuration Date: Tue, 18 Feb 2025 10:15:07 +0800 Message-ID: <20250218021507.40740-4-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20250218021507.40740-1-liulongfang@huawei.com> References: <20250218021507.40740-1-liulongfang@huawei.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemg500006.china.huawei.com (7.202.181.43) On the new hardware platform, the migration region is moved from VF to PF. the driver also needs to be modified accordingly to adapt to the new hardware device. Use PF's io base directly on the new hardware platform. and no mmap operation is required. If it is on an old platform, the driver needs to be compatible with the old solution. Signed-off-by: Longfang Liu --- .../vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 165 ++++++++++++------ .../vfio/pci/hisilicon/hisi_acc_vfio_pci.h | 7 + 2 files changed, 119 insertions(+), 53 deletions(-) diff --git a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c index 599905dbb707..cf5a807c2199 100644 --- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c +++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c @@ -125,6 +125,72 @@ static int qm_get_cqc(struct hisi_qm *qm, u64 *addr) return 0; } +static int qm_get_xqc_regs(struct hisi_acc_vf_core_device *hisi_acc_vdev, + struct acc_vf_data *vf_data) +{ + struct hisi_qm *qm = &hisi_acc_vdev->vf_qm; + struct device *dev = &qm->pdev->dev; + u32 eqc_addr, aeqc_addr; + int ret; + + if (qm->ver == QM_HW_V3) { + eqc_addr = QM_EQC_DW0; + aeqc_addr = QM_AEQC_DW0; + } else { + eqc_addr = QM_EQC_PF_DW0; + aeqc_addr = QM_AEQC_PF_DW0; + } + + /* QM_EQC_DW has 7 regs */ + ret = qm_read_regs(qm, eqc_addr, vf_data->qm_eqc_dw, 7); + if (ret) { + dev_err(dev, "failed to read QM_EQC_DW\n"); + return ret; + } + + /* QM_AEQC_DW has 7 regs */ + ret = qm_read_regs(qm, aeqc_addr, vf_data->qm_aeqc_dw, 7); + if (ret) { + dev_err(dev, "failed to read QM_AEQC_DW\n"); + return ret; + } + + return 0; +} + +static int qm_set_xqc_regs(struct hisi_acc_vf_core_device *hisi_acc_vdev, + struct acc_vf_data *vf_data) +{ + struct hisi_qm *qm = &hisi_acc_vdev->vf_qm; + struct device *dev = &qm->pdev->dev; + u32 eqc_addr, aeqc_addr; + int ret; + + if (qm->ver == QM_HW_V3) { + eqc_addr = QM_EQC_DW0; + aeqc_addr = QM_AEQC_DW0; + } else { + eqc_addr = QM_EQC_PF_DW0; + aeqc_addr = QM_AEQC_PF_DW0; + } + + /* QM_EQC_DW has 7 regs */ + ret = qm_write_regs(qm, eqc_addr, vf_data->qm_eqc_dw, 7); + if (ret) { + dev_err(dev, "failed to write QM_EQC_DW\n"); + return ret; + } + + /* QM_AEQC_DW has 7 regs */ + ret = qm_write_regs(qm, aeqc_addr, vf_data->qm_aeqc_dw, 7); + if (ret) { + dev_err(dev, "failed to write QM_AEQC_DW\n"); + return ret; + } + + return 0; +} + static int qm_get_regs(struct hisi_qm *qm, struct acc_vf_data *vf_data) { struct device *dev = &qm->pdev->dev; @@ -167,20 +233,6 @@ static int qm_get_regs(struct hisi_qm *qm, struct acc_vf_data *vf_data) return ret; } - /* QM_EQC_DW has 7 regs */ - ret = qm_read_regs(qm, QM_EQC_DW0, vf_data->qm_eqc_dw, 7); - if (ret) { - dev_err(dev, "failed to read QM_EQC_DW\n"); - return ret; - } - - /* QM_AEQC_DW has 7 regs */ - ret = qm_read_regs(qm, QM_AEQC_DW0, vf_data->qm_aeqc_dw, 7); - if (ret) { - dev_err(dev, "failed to read QM_AEQC_DW\n"); - return ret; - } - return 0; } @@ -238,20 +290,6 @@ static int qm_set_regs(struct hisi_qm *qm, struct acc_vf_data *vf_data) return ret; } - /* QM_EQC_DW has 7 regs */ - ret = qm_write_regs(qm, QM_EQC_DW0, vf_data->qm_eqc_dw, 7); - if (ret) { - dev_err(dev, "failed to write QM_EQC_DW\n"); - return ret; - } - - /* QM_AEQC_DW has 7 regs */ - ret = qm_write_regs(qm, QM_AEQC_DW0, vf_data->qm_aeqc_dw, 7); - if (ret) { - dev_err(dev, "failed to write QM_AEQC_DW\n"); - return ret; - } - return 0; } @@ -470,6 +508,10 @@ static int vf_qm_load_data(struct hisi_acc_vf_core_device *hisi_acc_vdev, return ret; } + ret = qm_set_xqc_regs(hisi_acc_vdev, vf_data); + if (ret) + return ret; + ret = hisi_qm_mb(qm, QM_MB_CMD_SQC_BT, qm->sqc_dma, 0, 0); if (ret) { dev_err(dev, "set sqc failed\n"); @@ -544,6 +586,10 @@ static int vf_qm_state_save(struct hisi_acc_vf_core_device *hisi_acc_vdev, return ret; } + ret = qm_get_xqc_regs(hisi_acc_vdev, vf_data); + if (ret) + return -EINVAL; + ret = vf_qm_read_data(vf_qm, vf_data); if (ret) return -EINVAL; @@ -1131,34 +1177,46 @@ static int hisi_acc_vf_qm_init(struct hisi_acc_vf_core_device *hisi_acc_vdev) { struct vfio_pci_core_device *vdev = &hisi_acc_vdev->core_device; struct hisi_qm *vf_qm = &hisi_acc_vdev->vf_qm; + struct hisi_qm *pf_qm = hisi_acc_vdev->pf_qm; struct pci_dev *vf_dev = vdev->pdev; - /* - * ACC VF dev BAR2 region consists of both functional register space - * and migration control register space. For migration to work, we - * need access to both. Hence, we map the entire BAR2 region here. - * But unnecessarily exposing the migration BAR region to the Guest - * has the potential to prevent/corrupt the Guest migration. Hence, - * we restrict access to the migration control space from - * Guest(Please see mmap/ioctl/read/write override functions). - * - * Please note that it is OK to expose the entire VF BAR if migration - * is not supported or required as this cannot affect the ACC PF - * configurations. - * - * Also the HiSilicon ACC VF devices supported by this driver on - * HiSilicon hardware platforms are integrated end point devices - * and the platform lacks the capability to perform any PCIe P2P - * between these devices. - */ + if (pf_qm->ver == QM_HW_V3) { + /* + * ACC VF dev BAR2 region consists of both functional register space + * and migration control register space. For migration to work, we + * need access to both. Hence, we map the entire BAR2 region here. + * But unnecessarily exposing the migration BAR region to the Guest + * has the potential to prevent/corrupt the Guest migration. Hence, + * we restrict access to the migration control space from + * Guest(Please see mmap/ioctl/read/write override functions). + * + * Please note that it is OK to expose the entire VF BAR if migration + * is not supported or required as this cannot affect the ACC PF + * configurations. + * + * Also the HiSilicon ACC VF devices supported by this driver on + * HiSilicon hardware platforms are integrated end point devices + * and the platform lacks the capability to perform any PCIe P2P + * between these devices. + */ - vf_qm->io_base = - ioremap(pci_resource_start(vf_dev, VFIO_PCI_BAR2_REGION_INDEX), - pci_resource_len(vf_dev, VFIO_PCI_BAR2_REGION_INDEX)); - if (!vf_qm->io_base) - return -EIO; + vf_qm->io_base = + ioremap(pci_resource_start(vf_dev, VFIO_PCI_BAR2_REGION_INDEX), + pci_resource_len(vf_dev, VFIO_PCI_BAR2_REGION_INDEX)); + if (!vf_qm->io_base) + return -EIO; - vf_qm->fun_type = QM_HW_VF; + vf_qm->fun_type = QM_HW_VF; + vf_qm->ver = pf_qm->ver; + } else { + /* + * In the new HW platform, the migration function register space is in BAR2 of PF, + * and each VF occupies 8KB address space. + */ + vf_qm->io_base = pf_qm->io_base + QM_MIG_REGION_OFFSET + + hisi_acc_vdev->vf_id * QM_MIG_REGION_SIZE; + vf_qm->fun_type = QM_HW_PF; + } vf_qm->pdev = vf_dev; mutex_init(&vf_qm->mailbox_lock); @@ -1488,7 +1546,8 @@ static void hisi_acc_vfio_pci_close_device(struct vfio_device *core_vdev) mutex_lock(&hisi_acc_vdev->open_mutex); hisi_acc_vdev->dev_opened = false; - iounmap(vf_qm->io_base); + if (vf_qm->ver == QM_HW_V3) + iounmap(vf_qm->io_base); mutex_unlock(&hisi_acc_vdev->open_mutex); vfio_pci_core_close_device(core_vdev); } diff --git a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.h b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.h index 245d7537b2bc..b01eb54525d3 100644 --- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.h +++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.h @@ -50,6 +50,13 @@ #define QM_EQC_DW0 0X8000 #define QM_AEQC_DW0 0X8020 +#define QM_MIG_REGION_OFFSET 0x180000 +#define QM_MIG_REGION_SIZE 0x2000 + +#define QM_SUB_VERSION_ID 0x100210 +#define QM_EQC_PF_DW0 0x1c00 +#define QM_AEQC_PF_DW0 0x1c20 + struct acc_vf_data { #define QM_MATCH_SIZE offsetofend(struct acc_vf_data, qm_rsv_state) /* QM match information */