From: Joerg Roedel <joro@8bytes.org>
To: iommu@lists.linux-foundation.org
Cc: linux-ia64@vger.kernel.org, Heiko Stuebner <heiko@sntech.de>,
David Airlie <airlied@linux.ie>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Thierry Reding <thierry.reding@gmail.com>,
Paul Mackerras <paulus@samba.org>, Will Deacon <will@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
x86@kernel.org, Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Fenghua Yu <fenghua.yu@intel.com>, Joerg Roedel <jroedel@suse.de>,
intel-gfx@lists.freedesktop.org,
Jani Nikula <jani.nikula@linux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
linux-arm-kernel@lists.infradead.org,
Tony Luck <tony.luck@intel.com>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Daniel Vetter <daniel@ffwll.ch>,
David Woodhouse <dwmw2@infradead.org>
Subject: [PATCH 02/13] iommu/vt-d: Use dev_iommu_priv_get/set()
Date: Thu, 25 Jun 2020 15:08:25 +0200 [thread overview]
Message-ID: <20200625130836.1916-3-joro@8bytes.org> (raw)
In-Reply-To: <20200625130836.1916-1-joro@8bytes.org>
From: Joerg Roedel <jroedel@suse.de>
Remove the use of dev->archdata.iommu and use the private per-device
pointer provided by IOMMU core code instead.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
.../gpu/drm/i915/selftests/mock_gem_device.c | 10 ++++++++--
drivers/iommu/intel/iommu.c | 18 +++++++++---------
2 files changed, 17 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
index 9b105b811f1f..e08601905a64 100644
--- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -24,6 +24,7 @@
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
+#include <linux/iommu.h>
#include <drm/drm_managed.h>
@@ -118,6 +119,9 @@ struct drm_i915_private *mock_gem_device(void)
{
struct drm_i915_private *i915;
struct pci_dev *pdev;
+#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
+ struct dev_iommu iommu;
+#endif
int err;
pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
@@ -136,8 +140,10 @@ struct drm_i915_private *mock_gem_device(void)
dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
- /* hack to disable iommu for the fake device; force identity mapping */
- pdev->dev.archdata.iommu = (void *)-1;
+ /* HACK HACK HACK to disable iommu for the fake device; force identity mapping */
+ memset(&iommu, 0, sizeof(iommu));
+ iommu.priv = (void *)-1;
+ pdev->dev.iommu = &iommu;
#endif
pci_set_drvdata(pdev, i915);
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index d759e7234e98..2ce490c2eab8 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -372,7 +372,7 @@ struct device_domain_info *get_domain_info(struct device *dev)
if (!dev)
return NULL;
- info = dev->archdata.iommu;
+ info = dev_iommu_priv_get(dev);
if (unlikely(info == DUMMY_DEVICE_DOMAIN_INFO ||
info == DEFER_DEVICE_DOMAIN_INFO))
return NULL;
@@ -743,12 +743,12 @@ struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus,
static int iommu_dummy(struct device *dev)
{
- return dev->archdata.iommu == DUMMY_DEVICE_DOMAIN_INFO;
+ return dev_iommu_priv_get(dev) == DUMMY_DEVICE_DOMAIN_INFO;
}
static bool attach_deferred(struct device *dev)
{
- return dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO;
+ return dev_iommu_priv_get(dev) == DEFER_DEVICE_DOMAIN_INFO;
}
/**
@@ -2420,7 +2420,7 @@ static inline void unlink_domain_info(struct device_domain_info *info)
list_del(&info->link);
list_del(&info->global);
if (info->dev)
- info->dev->archdata.iommu = NULL;
+ dev_iommu_priv_set(info->dev, NULL);
}
static void domain_remove_dev_info(struct dmar_domain *domain)
@@ -2453,7 +2453,7 @@ static void do_deferred_attach(struct device *dev)
{
struct iommu_domain *domain;
- dev->archdata.iommu = NULL;
+ dev_iommu_priv_set(dev, NULL);
domain = iommu_get_domain_for_dev(dev);
if (domain)
intel_iommu_attach_device(domain, dev);
@@ -2599,7 +2599,7 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu,
list_add(&info->link, &domain->devices);
list_add(&info->global, &device_domain_list);
if (dev)
- dev->archdata.iommu = info;
+ dev_iommu_priv_set(dev, info);
spin_unlock_irqrestore(&device_domain_lock, flags);
/* PASID table is mandatory for a PCI device in scalable mode. */
@@ -4004,7 +4004,7 @@ static void quirk_ioat_snb_local_iommu(struct pci_dev *pdev)
if (!drhd || drhd->reg_base_addr - vtbar != 0xa000) {
pr_warn_once(FW_BUG "BIOS assigned incorrect VT-d unit for Intel(R) QuickData Technology device\n");
add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
- pdev->dev.archdata.iommu = DUMMY_DEVICE_DOMAIN_INFO;
+ dev_iommu_priv_set(&pdev->dev, DUMMY_DEVICE_DOMAIN_INFO);
}
}
DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB, quirk_ioat_snb_local_iommu);
@@ -4043,7 +4043,7 @@ static void __init init_no_remapping_devices(void)
drhd->ignored = 1;
for_each_active_dev_scope(drhd->devices,
drhd->devices_cnt, i, dev)
- dev->archdata.iommu = DUMMY_DEVICE_DOMAIN_INFO;
+ dev_iommu_priv_set(dev, DUMMY_DEVICE_DOMAIN_INFO);
}
}
}
@@ -5665,7 +5665,7 @@ static struct iommu_device *intel_iommu_probe_device(struct device *dev)
return ERR_PTR(-ENODEV);
if (translation_pre_enabled(iommu))
- dev->archdata.iommu = DEFER_DEVICE_DOMAIN_INFO;
+ dev_iommu_priv_set(dev, DEFER_DEVICE_DOMAIN_INFO);
return &iommu->iommu;
}
--
2.27.0
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2020-06-25 13:08 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-25 13:08 [PATCH 00/13] iommu: Remove usage of dev->archdata.iommu Joerg Roedel
2020-06-25 13:08 ` [PATCH 01/13] iommu/exynos: Use dev_iommu_priv_get/set() Joerg Roedel
2020-06-29 7:51 ` Marek Szyprowski
2020-06-25 13:08 ` Joerg Roedel [this message]
2020-06-25 13:24 ` [PATCH 02/13] iommu/vt-d: " Lu Baolu
2020-06-25 13:08 ` [PATCH 03/13] iommu/msm: " Joerg Roedel
2020-06-25 13:08 ` [PATCH 04/13] iommu/omap: " Joerg Roedel
2020-06-25 13:08 ` [PATCH 05/13] iommu/rockchip: " Joerg Roedel
2020-06-25 13:08 ` [PATCH 06/13] iommu/tegra: " Joerg Roedel
2020-06-25 13:08 ` [PATCH 07/13] iommu/pamu: " Joerg Roedel
2020-06-25 13:08 ` [PATCH 08/13] iommu/mediatek: Do no use dev->archdata.iommu Joerg Roedel
2020-06-25 13:08 ` [PATCH 09/13] x86: Remove dev->archdata.iommu pointer Joerg Roedel
2020-06-26 11:46 ` Borislav Petkov
2020-06-25 13:08 ` [PATCH 10/13] ia64: " Joerg Roedel
2020-06-25 13:08 ` [PATCH 11/13] arm: " Joerg Roedel
2020-06-25 13:08 ` [PATCH 12/13] arm64: " Joerg Roedel
2020-06-25 13:16 ` Will Deacon
2020-06-25 13:08 ` [PATCH 13/13] powerpc/dma: Remove dev->archdata.iommu_domain Joerg Roedel
2020-06-29 10:57 ` Michael Ellerman
2020-06-26 1:41 ` [PATCH 00/13] iommu: Remove usage of dev->archdata.iommu Jerry Snitselaar
2020-06-30 10:00 ` Joerg Roedel
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