From patchwork Tue Oct 16 12:49:17 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shameerali Kolothum Thodi X-Patchwork-Id: 148935 Delivered-To: patch@linaro.org Received: by 2002:a2e:8595:0:0:0:0:0 with SMTP id b21-v6csp5045714lji; Tue, 16 Oct 2018 05:51:17 -0700 (PDT) X-Google-Smtp-Source: ACcGV61f3ovVtGaJAZL6dPy8RXzoxGFCmtjMTkSfXNLYQ95NIbFb3PianBC/gY6d17sy2Ra7Jp2N X-Received: by 2002:a62:8910:: with SMTP id v16-v6mr21913244pfd.106.1539694277150; Tue, 16 Oct 2018 05:51:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1539694277; cv=none; d=google.com; s=arc-20160816; b=Ljsg1Lo42D4JyYvU9WQQt2whK08C6TNxjVBwX/v6fTWp6Brt1muKJvapGaSqJT/FP/ xwAIx1fMY849E3hNEEH94dA9pGNjvRxS9NK5c+WBx47baf+8MASNJbH3Oa0Ciy9hWBJc I5gA7m7r00fVXgOy+e01LZil90cZsKhsYIuk7Wd4CEN2/g1c5MuWrarR9+1hhAwjz9IE rpO+esP1dz6iVThiOvNSOZniRkEmKcv+3uCXiu+opphhLyu1XWBq3yLwC6RPAcaP8lIT /ZusHKIfx2c9o2DcxQhFqt+c9rZt+eOiPGdi46ULbbH2IewpKUbk3gtXV1oYrP8X78Y9 sdRQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from; bh=oz8mSvRNmzq1zwQNAaf+Z096U2TQs8GaZdJQUSkivuw=; b=J27oEC/Q1aLrxVkWmb01Phko6haau/jtAQZe5szJ4G3MhmTX5JNYHNNTkwiWW+pCDC 3j5x7MZQgcagETEZdxUTR4fJ03DxMUyeUyLYLgp4R64Dr3rTlW1GJ6lHxtYDzdxtDcKM S4ffrQfXehOsKi3WhjiwSGh1J/TVJTXYjzFJUU2T8XuARuDx9TTIE+uDhK8upwLeIEV8 ALVR+hCrVGKuWutXqPaN9dMd+7aQR7IFKhdnlOjqCI4/sxsbYiJeSznLe+rKUtvuD4XC wlqFuGBmCJ7864oUyneJvTLjQ880xt1f3x90kVH0/kRMoIh+VLRY/1iPSTMNjB+MIvyN nqzg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-acpi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h4-v6si14631617plr.343.2018.10.16.05.51.16; Tue, 16 Oct 2018 05:51:17 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-acpi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-acpi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727034AbeJPUlg (ORCPT + 9 others); Tue, 16 Oct 2018 16:41:36 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:59599 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726986AbeJPUlg (ORCPT ); Tue, 16 Oct 2018 16:41:36 -0400 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 1CE05325E20AD; Tue, 16 Oct 2018 20:51:10 +0800 (CST) Received: from S00345302A-PC.china.huawei.com (10.202.227.237) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.399.0; Tue, 16 Oct 2018 20:51:03 +0800 From: Shameer Kolothum To: , , CC: , , , , , , , , , , , Subject: [PATCH v4 1/4] acpi: arm64: add iort support for PMCG Date: Tue, 16 Oct 2018 13:49:17 +0100 Message-ID: <20181016124920.24708-2-shameerali.kolothum.thodi@huawei.com> X-Mailer: git-send-email 2.12.0.windows.1 In-Reply-To: <20181016124920.24708-1-shameerali.kolothum.thodi@huawei.com> References: <20181016124920.24708-1-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.202.227.237] X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Neil Leeder Add support for the SMMU Performance Monitor Counter Group information from ACPI. This is in preparation for its use in the SMMUv3 PMU driver. Signed-off-by: Neil Leeder Signed-off-by: Hanjun Guo Signed-off-by: Shameer Kolothum --- drivers/acpi/arm64/iort.c | 97 +++++++++++++++++++++++++++++++++++++---------- 1 file changed, 76 insertions(+), 21 deletions(-) -- 2.7.4 diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 08f26db..c44d8f6 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -356,7 +356,8 @@ static struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node, if (map->flags & ACPI_IORT_ID_SINGLE_MAPPING) { if (node->type == ACPI_IORT_NODE_NAMED_COMPONENT || node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX || - node->type == ACPI_IORT_NODE_SMMU_V3) { + node->type == ACPI_IORT_NODE_SMMU_V3 || + node->type == ACPI_IORT_NODE_PMCG) { *id_out = map->output_base; return parent; } @@ -394,6 +395,8 @@ static int iort_get_id_mapping_index(struct acpi_iort_node *node) } return smmu->id_mapping_index; + case ACPI_IORT_NODE_PMCG: + return 0; default: return -EINVAL; } @@ -1216,14 +1219,23 @@ static void __init arm_smmu_v3_init_resources(struct resource *res, } } -static bool __init arm_smmu_v3_is_coherent(struct acpi_iort_node *node) +static void __init arm_smmu_v3_dma_configure(struct device *dev, + struct acpi_iort_node *node) { struct acpi_iort_smmu_v3 *smmu; + enum dev_dma_attr attr; /* Retrieve SMMUv3 specific data */ smmu = (struct acpi_iort_smmu_v3 *)node->node_data; - return smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE; + attr = (smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE) ? + DEV_DMA_COHERENT : DEV_DMA_NON_COHERENT; + + /* We expect the dma masks to be equivalent for all SMMUv3 set-ups */ + dev->dma_mask = &dev->coherent_dma_mask; + + /* Configure DMA for the page table walker */ + acpi_dma_configure(dev, attr); } #if defined(CONFIG_ACPI_NUMA) @@ -1299,20 +1311,64 @@ static void __init arm_smmu_init_resources(struct resource *res, } } -static bool __init arm_smmu_is_coherent(struct acpi_iort_node *node) +static void __init arm_smmu_dma_configure(struct device *dev, + struct acpi_iort_node *node) { struct acpi_iort_smmu *smmu; + enum dev_dma_attr attr; /* Retrieve SMMU specific data */ smmu = (struct acpi_iort_smmu *)node->node_data; - return smmu->flags & ACPI_IORT_SMMU_COHERENT_WALK; + attr = (smmu->flags & ACPI_IORT_SMMU_COHERENT_WALK) ? + DEV_DMA_COHERENT : DEV_DMA_NON_COHERENT; + + /* We expect the dma masks to be equivalent for SMMU set-ups */ + dev->dma_mask = &dev->coherent_dma_mask; + + /* Configure DMA for the page table walker */ + acpi_dma_configure(dev, attr); +} + +static int __init arm_smmu_v3_pmcg_count_resources(struct acpi_iort_node *node) +{ + struct acpi_iort_pmcg *pmcg; + + /* Retrieve PMCG specific data */ + pmcg = (struct acpi_iort_pmcg *)node->node_data; + + /* + * There are always 2 memory resources. + * If the overflow_gsiv is present then add that for a total of 3. + */ + return pmcg->overflow_gsiv ? 3 : 2; +} + +static void __init arm_smmu_v3_pmcg_init_resources(struct resource *res, + struct acpi_iort_node *node) +{ + struct acpi_iort_pmcg *pmcg; + + /* Retrieve PMCG specific data */ + pmcg = (struct acpi_iort_pmcg *)node->node_data; + + res[0].start = pmcg->page0_base_address; + res[0].end = pmcg->page0_base_address + SZ_4K - 1; + res[0].flags = IORESOURCE_MEM; + res[1].start = pmcg->page1_base_address; + res[1].end = pmcg->page1_base_address + SZ_4K - 1; + res[1].flags = IORESOURCE_MEM; + + if (pmcg->overflow_gsiv) + acpi_iort_register_irq(pmcg->overflow_gsiv, "overflow", + ACPI_EDGE_SENSITIVE, &res[2]); } struct iort_dev_config { const char *name; int (*dev_init)(struct acpi_iort_node *node); - bool (*dev_is_coherent)(struct acpi_iort_node *node); + void (*dev_dma_configure)(struct device *dev, + struct acpi_iort_node *node); int (*dev_count_resources)(struct acpi_iort_node *node); void (*dev_init_resources)(struct resource *res, struct acpi_iort_node *node); @@ -1322,7 +1378,7 @@ struct iort_dev_config { static const struct iort_dev_config iort_arm_smmu_v3_cfg __initconst = { .name = "arm-smmu-v3", - .dev_is_coherent = arm_smmu_v3_is_coherent, + .dev_dma_configure = arm_smmu_v3_dma_configure, .dev_count_resources = arm_smmu_v3_count_resources, .dev_init_resources = arm_smmu_v3_init_resources, .dev_set_proximity = arm_smmu_v3_set_proximity, @@ -1330,19 +1386,28 @@ static const struct iort_dev_config iort_arm_smmu_v3_cfg __initconst = { static const struct iort_dev_config iort_arm_smmu_cfg __initconst = { .name = "arm-smmu", - .dev_is_coherent = arm_smmu_is_coherent, + .dev_dma_configure = arm_smmu_dma_configure, .dev_count_resources = arm_smmu_count_resources, - .dev_init_resources = arm_smmu_init_resources + .dev_init_resources = arm_smmu_init_resources, +}; + +static const struct iort_dev_config iort_arm_smmu_v3_pmcg_cfg __initconst = { + .name = "arm-smmu-v3-pmu", + .dev_count_resources = arm_smmu_v3_pmcg_count_resources, + .dev_init_resources = arm_smmu_v3_pmcg_init_resources, }; static __init const struct iort_dev_config *iort_get_dev_cfg( struct acpi_iort_node *node) { + switch (node->type) { case ACPI_IORT_NODE_SMMU_V3: return &iort_arm_smmu_v3_cfg; case ACPI_IORT_NODE_SMMU: return &iort_arm_smmu_cfg; + case ACPI_IORT_NODE_PMCG: + return &iort_arm_smmu_v3_pmcg_cfg; default: return NULL; } @@ -1360,7 +1425,6 @@ static int __init iort_add_platform_device(struct acpi_iort_node *node, struct fwnode_handle *fwnode; struct platform_device *pdev; struct resource *r; - enum dev_dma_attr attr; int ret, count; pdev = platform_device_alloc(ops->name, PLATFORM_DEVID_AUTO); @@ -1398,12 +1462,6 @@ static int __init iort_add_platform_device(struct acpi_iort_node *node, if (ret) goto dev_put; - /* - * We expect the dma masks to be equivalent for - * all SMMUs set-ups - */ - pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; - fwnode = iort_get_fwnode(node); if (!fwnode) { @@ -1413,11 +1471,8 @@ static int __init iort_add_platform_device(struct acpi_iort_node *node, pdev->dev.fwnode = fwnode; - attr = ops->dev_is_coherent && ops->dev_is_coherent(node) ? - DEV_DMA_COHERENT : DEV_DMA_NON_COHERENT; - - /* Configure DMA for the page table walker */ - acpi_dma_configure(&pdev->dev, attr); + if (ops->dev_dma_configure) + ops->dev_dma_configure(&pdev->dev, node); iort_set_device_domain(&pdev->dev, node);