From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 4/4] iommu/pamu: Add support for generic iommu-device Date: Wed, 9 Aug 2017 16:46:54 +0200 Message-ID: <1502290014-2890-5-git-send-email-joro@8bytes.org> References: <1502290014-2890-1-git-send-email-joro@8bytes.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1502290014-2890-1-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Cc: Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org, Joerg Roedel , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel This patch adds a global iommu-handle to the pamu driver and initializes it at probe time. Also link devices added to the iommu to this handle. Signed-off-by: Joerg Roedel --- drivers/iommu/fsl_pamu.c | 17 +++++++++++++++++ drivers/iommu/fsl_pamu.h | 3 +++ drivers/iommu/fsl_pamu_domain.c | 5 ++++- drivers/iommu/fsl_pamu_domain.h | 2 ++ 4 files changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c index 9ee8e9e..9238a85 100644 --- a/drivers/iommu/fsl_pamu.c +++ b/drivers/iommu/fsl_pamu.c @@ -44,6 +44,8 @@ static struct paace *spaact; static bool probed; /* Has PAMU been probed? */ +struct iommu_device pamu_iommu; /* IOMMU core code handle */ + /* * Table for matching compatible strings, for device tree * guts node, for QorIQ SOCs. @@ -1154,6 +1156,18 @@ static int fsl_pamu_probe(struct platform_device *pdev) if (ret) goto error_genpool; + ret = iommu_device_sysfs_add(&pamu_iommu, dev, NULL, "iommu0"); + if (ret) + goto error_genpool; + + iommu_device_set_ops(&pamu_iommu, &fsl_pamu_ops); + + ret = iommu_device_register(&pamu_iommu); + if (ret) { + dev_err(dev, "Can't register iommu device\n"); + goto error_sysfs; + } + pamubypenr = in_be32(&guts_regs->pamubypenr); for (pamu_reg_off = 0, pamu_counter = 0x80000000; pamu_reg_off < size; @@ -1181,6 +1195,9 @@ static int fsl_pamu_probe(struct platform_device *pdev) return 0; +error_sysfs: + iommu_device_sysfs_remove(&pamu_iommu); + error_genpool: gen_pool_destroy(spaace_pool); diff --git a/drivers/iommu/fsl_pamu.h b/drivers/iommu/fsl_pamu.h index c3434f2..fa48222 100644 --- a/drivers/iommu/fsl_pamu.h +++ b/drivers/iommu/fsl_pamu.h @@ -391,6 +391,9 @@ struct ome { #define EOE_WWSAOL 0x1e /* Write with stash allocate only and lock */ #define EOE_VALID 0x80 +extern const struct iommu_ops fsl_pamu_ops; +extern struct iommu_device pamu_iommu; /* IOMMU core code handle */ + /* Function prototypes */ int pamu_domain_init(void); int pamu_enable_liodn(int liodn); diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index da0e1e3..914953b 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -983,11 +983,14 @@ static int fsl_pamu_add_device(struct device *dev) iommu_group_put(group); + iommu_device_link(&pamu_iommu, dev); + return 0; } static void fsl_pamu_remove_device(struct device *dev) { + iommu_device_unlink(&pamu_iommu, dev); iommu_group_remove_device(dev); } @@ -1047,7 +1050,7 @@ static u32 fsl_pamu_get_windows(struct iommu_domain *domain) return dma_domain->win_cnt; } -static const struct iommu_ops fsl_pamu_ops = { +const struct iommu_ops fsl_pamu_ops = { .capable = fsl_pamu_capable, .domain_alloc = fsl_pamu_domain_alloc, .domain_free = fsl_pamu_domain_free, diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h index f2b0f74..6d8661e 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -21,6 +21,8 @@ #include "fsl_pamu.h" +const struct iommu_ops fsl_pamu_ops; + struct dma_window { phys_addr_t paddr; u64 size; -- 2.7.4