[PATCH 4/4] x86: intel-iommu: move to drivers/iommu/
flat view
STALE5603d
From: Ohad Ben-Cohen <hidden>
Date: 2011-06-08 08:36:31
Also in:
linux-omap, lkml
Subsystem:
iommu subsystem, pci subsystem, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Joerg Roedel, Will Deacon, Bjorn Helgaas, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Revision v1 of 2 in this series.
Revisions (2)
- v1 current
- v2 [diff vs current]
This should ease finding similarities with different platforms,
with the intention of solving problems once in a generic framework
which everyone can use.
Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge()
has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled
in this patch, too.
Compile-tested on x86_64.
Signed-off-by: Ohad Ben-Cohen <redacted>
---
arch/x86/Kconfig | 11 -----------
drivers/iommu/Kconfig | 11 +++++++++++
drivers/iommu/Makefile | 1 +
drivers/{pci => iommu}/intel-iommu.c | 1 -
drivers/pci/Makefile | 2 +-
drivers/pci/pci.h | 2 --
include/linux/pci.h | 11 +++++++++++
7 files changed, 24 insertions(+), 15 deletions(-)
rename drivers/{pci => iommu}/intel-iommu.c (99%)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 1b6a2e2..d22662c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig@@ -1912,17 +1912,6 @@ config PCI_CNB20LE_QUIRK You should say N unless you know you need this. -config DMAR - bool "Support for DMA Remapping Devices (EXPERIMENTAL)" - depends on PCI_MSI && ACPI && EXPERIMENTAL - select IOMMU_API - help - DMA remapping (DMAR) devices support enables independent address - translations for Direct Memory Access (DMA) from devices. - These DMA remapping devices are reported via ACPI tables - and include PCI device scope covered by these DMA - remapping devices. - config DMAR_DEFAULT_ON def_bool y prompt "Enable DMA Remapping Devices by default"
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 555f5a8..b03a980 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig@@ -40,3 +40,14 @@ config AMD_IOMMU_STATS statistics about whats happening in the driver and exports that information to userspace via debugfs. If unsure, say N. + +config DMAR + bool "Support for DMA Remapping Devices (EXPERIMENTAL)" + depends on PCI_MSI && ACPI && EXPERIMENTAL + select IOMMU_API + help + DMA remapping (DMAR) devices support enables independent address + translations for Direct Memory Access (DMA) from devices. + These DMA remapping devices are reported via ACPI tables + and include PCI device scope covered by these DMA + remapping devices.
diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile
index d099d39..aaac56d 100644
--- a/drivers/iommu/Makefile
+++ b/drivers/iommu/Makefile@@ -1,3 +1,4 @@ obj-$(CONFIG_IOMMU_API) += iommu.o obj-$(CONFIG_MSM_IOMMU) += msm-iommu.o obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o +obj-$(CONFIG_DMAR) += intel-iommu.o
diff --git a/drivers/pci/intel-iommu.c b/drivers/iommu/intel-iommu.c
similarity index 99%
rename from drivers/pci/intel-iommu.c
rename to drivers/iommu/intel-iommu.c
index 59f17ac..fd7a055 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c@@ -42,7 +42,6 @@ #include <linux/pci-ats.h> #include <asm/cacheflush.h> #include <asm/iommu.h> -#include "pci.h" #define ROOT_SIZE VTD_PAGE_SIZE #define CONTEXT_SIZE VTD_PAGE_SIZE
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index c85f744..7826920 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile@@ -30,7 +30,7 @@ obj-$(CONFIG_PCI_MSI) += msi.o obj-$(CONFIG_HT_IRQ) += htirq.o # Build Intel IOMMU support -obj-$(CONFIG_DMAR) += dmar.o iova.o intel-iommu.o +obj-$(CONFIG_DMAR) += dmar.o iova.o obj-$(CONFIG_INTR_REMAP) += dmar.o intr_remapping.o
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 731e202..b7bf11d 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h@@ -184,8 +184,6 @@ pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) return NULL; } -struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); - /* PCI slot sysfs helper code */ #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index c446b5c..970bfe0 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h@@ -1589,5 +1589,16 @@ int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, unsigned int len, const char *kw); +/** + * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device + * @pdev: the PCI device + * + * if the device is PCIE, return NULL + * if the device isn't connected to a PCIe bridge (that is its parent is a + * legacy PCI bridge and the bridge is directly connected to bus 0), return its + * parent + */ +struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */
--
1.7.1