[PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully

[PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully

[FUJITA Tomonori]

This patchset is against tip/master.

The first version is:

http://marc.info/?l=linux-kernel&m=125671300920411&w=2

The changes since v1 are:

- replaced Chris' bootmem patches with the 6/9 patch to implement
  free_bootmem_late in a simple way (thanks to Pekka).

- fixed the bug to break 'iommu=soft' boot opiton (found by Joerg).

- moved iommu_init_noop() to x86_init.c

- added Muli's Acked-by to Calgary patch.


==
 arch/ia64/kernel/pci-swiotlb.c   |    4 +-
 arch/powerpc/kernel/setup_32.c   |    2 +-
 arch/powerpc/kernel/setup_64.c   |    2 +-
 arch/x86/include/asm/amd_iommu.h |    2 -
 arch/x86/include/asm/calgary.h   |    2 -
 arch/x86/include/asm/gart.h      |    5 +---
 arch/x86/include/asm/iommu.h     |    1 -
 arch/x86/include/asm/x86_init.h  |    9 +++++++
 arch/x86/kernel/amd_iommu.c      |    2 +-
 arch/x86/kernel/amd_iommu_init.c |   19 +++-----------
 arch/x86/kernel/aperture_64.c    |    4 ++-
 arch/x86/kernel/pci-calgary_64.c |   19 ++++-----------
 arch/x86/kernel/pci-dma.c        |   27 ++++++++++-----------
 arch/x86/kernel/pci-gart_64.c    |   16 ++++-------
 arch/x86/kernel/pci-nommu.c      |    9 -------
 arch/x86/kernel/pci-swiotlb.c    |   10 +++----
 arch/x86/kernel/x86_init.c       |    5 ++++
 drivers/pci/dmar.c               |    7 ++++-
 drivers/pci/intel-iommu.c        |    4 +-
 include/linux/bootmem.h          |    1 +
 include/linux/dmar.h             |   10 -------
 include/linux/swiotlb.h          |    5 ++-
 lib/swiotlb.c                    |   49 +++++++++++++++++++++++++++++++------
 mm/bootmem.c                     |   24 ++++++++++++++++++
 24 files changed, 131 insertions(+), 107 deletions(-)

[PATCH -v2 1/9] add iommu_init to x86_init_ops

[FUJITA Tomonori]

We call the detections functions of all the IOMMUs then all their
initialization functions. The latter is pointless since we don't
detect multiple different IOMMUs. What we need to do is calling the
initialization function of the detected IOMMU.

This adds iommu_init hook to x86_init_ops so if an IOMMU detection
function can set its initialization function to the hook.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 arch/x86/include/asm/x86_init.h |    9 +++++++++
 arch/x86/kernel/pci-dma.c       |    2 ++
 arch/x86/kernel/x86_init.c      |    5 +++++
 3 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 66008ed..d8e7145 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -91,6 +91,14 @@ struct x86_init_timers {
 };
 
 /**
+ * struct x86_init_iommu - platform specific iommu setup
+ * @iommu_init:			platform specific iommu setup
+ */
+struct x86_init_iommu {
+	int (*iommu_init)(void);
+};
+
+/**
  * struct x86_init_ops - functions for platform specific setup
  *
  */
@@ -101,6 +109,7 @@ struct x86_init_ops {
 	struct x86_init_oem		oem;
 	struct x86_init_paging		paging;
 	struct x86_init_timers		timers;
+	struct x86_init_iommu		iommu;
 };
 
 /**
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 839d49a..a13478d 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -292,6 +292,8 @@ static int __init pci_iommu_init(void)
 	dma_debug_add_bus(&pci_bus_type);
 #endif
 
+	x86_init.iommu.iommu_init();
+
 	calgary_iommu_init();
 
 	intel_iommu_init();
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index bc9b230..c46984d 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -19,6 +19,7 @@
 void __cpuinit x86_init_noop(void) { }
 void __init x86_init_uint_noop(unsigned int unused) { }
 void __init x86_init_pgd_noop(pgd_t *unused) { }
+int __init iommu_init_noop(void) { return 0; }
 
 /*
  * The platform setup functions are preset with the default functions
@@ -63,6 +64,10 @@ struct x86_init_ops x86_init __initdata = {
 		.tsc_pre_init		= x86_init_noop,
 		.timer_init		= hpet_time_init,
 	},
+
+	.iommu = {
+		.iommu_init		= iommu_init_noop,
+	},
 };
 
 struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
-- 
1.5.6.5

[tip:core/iommu] x86: Add iommu_init to x86_init_ops

[tip-bot for FUJITA Tomonori]

Commit-ID:  d07c1be0693e0902d743160b8b638585b808f8ac
Gitweb:     http://git.kernel.org/tip/d07c1be0693e0902d743160b8b638585b808f8ac
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:12 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:31:07 +0100

x86: Add iommu_init to x86_init_ops

We call the detections functions of all the IOMMUs then all
their initialization functions. The latter is pointless since we
don't detect multiple different IOMMUs. What we need to do is
calling the initialization function of the detected IOMMU.

This adds iommu_init hook to x86_init_ops so if an IOMMU
detection function can set its initialization function to the
hook.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-2-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/include/asm/x86_init.h |    9 +++++++++
 arch/x86/kernel/pci-dma.c       |    2 ++
 arch/x86/kernel/x86_init.c      |    5 +++++
 3 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 66008ed..d8e7145 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -91,6 +91,14 @@ struct x86_init_timers {
 };
 
 /**
+ * struct x86_init_iommu - platform specific iommu setup
+ * @iommu_init:			platform specific iommu setup
+ */
+struct x86_init_iommu {
+	int (*iommu_init)(void);
+};
+
+/**
  * struct x86_init_ops - functions for platform specific setup
  *
  */
@@ -101,6 +109,7 @@ struct x86_init_ops {
 	struct x86_init_oem		oem;
 	struct x86_init_paging		paging;
 	struct x86_init_timers		timers;
+	struct x86_init_iommu		iommu;
 };
 
 /**
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 839d49a..a13478d 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -292,6 +292,8 @@ static int __init pci_iommu_init(void)
 	dma_debug_add_bus(&pci_bus_type);
 #endif
 
+	x86_init.iommu.iommu_init();
+
 	calgary_iommu_init();
 
 	intel_iommu_init();
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index bc9b230..c46984d 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -19,6 +19,7 @@
 void __cpuinit x86_init_noop(void) { }
 void __init x86_init_uint_noop(unsigned int unused) { }
 void __init x86_init_pgd_noop(pgd_t *unused) { }
+int __init iommu_init_noop(void) { return 0; }
 
 /*
  * The platform setup functions are preset with the default functions
@@ -63,6 +64,10 @@ struct x86_init_ops x86_init __initdata = {
 		.tsc_pre_init		= x86_init_noop,
 		.timer_init		= hpet_time_init,
 	},
+
+	.iommu = {
+		.iommu_init		= iommu_init_noop,
+	},
 };
 
 struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {

[tip:core/iommu] x86: Add iommu_init to x86_init_ops, fix build

[tip-bot for Ingo Molnar]

Commit-ID:  b4941a9a606f0131559cc040b64e8437ac7b32c5
Gitweb:     http://git.kernel.org/tip/b4941a9a606f0131559cc040b64e8437ac7b32c5
Author:     Ingo Molnar <mingo@elte.hu>
AuthorDate: Tue, 10 Nov 2009 14:37:58 +0100
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 14:37:58 +0100

x86: Add iommu_init to x86_init_ops, fix build

Most of the time x86_init.h is included in pci-dma.c - but not always,
leading to this rare build failure:

arch/x86/kernel/pci-dma.c:296: error: 'x86_init' undeclared (first use in this function)

So include asm/x86_init.h explicitly.

Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-2-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/pci-dma.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 63eebee..f79870e 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -11,6 +11,7 @@
 #include <asm/gart.h>
 #include <asm/calgary.h>
 #include <asm/amd_iommu.h>
+#include <asm/x86_init.h>
 
 static int forbid_dac __read_mostly;
 

[PATCH -v2 2/9] Calgary: convert detect_calgary to use iommu_init hook

[FUJITA Tomonori]

This changes detect_calgary() to set init_calgary() to iommu_init hook
if detect_calgary() finds the Calgary IOMMU.

We can kill the code to check if we found the IOMMU in init_calgary()
since detect_calgary() sets init_calgary() only when it found the
IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
---
 arch/x86/include/asm/calgary.h   |    2 --
 arch/x86/kernel/pci-calgary_64.c |   11 +++++------
 arch/x86/kernel/pci-dma.c        |    2 --
 3 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/arch/x86/include/asm/calgary.h b/arch/x86/include/asm/calgary.h
index b03bedb..0918654 100644
--- a/arch/x86/include/asm/calgary.h
+++ b/arch/x86/include/asm/calgary.h
@@ -62,10 +62,8 @@ struct cal_chipset_ops {
 extern int use_calgary;
 
 #ifdef CONFIG_CALGARY_IOMMU
-extern int calgary_iommu_init(void);
 extern void detect_calgary(void);
 #else
-static inline int calgary_iommu_init(void) { return 1; }
 static inline void detect_calgary(void) { return; }
 #endif
 
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 971a3be..47bd419 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -46,6 +46,7 @@
 #include <asm/dma.h>
 #include <asm/rio.h>
 #include <asm/bios_ebda.h>
+#include <asm/x86_init.h>
 
 #ifdef CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT
 int use_calgary __read_mostly = 1;
@@ -1344,6 +1345,8 @@ static void __init get_tce_space_from_tar(void)
 	return;
 }
 
+int __init calgary_iommu_init(void);
+
 void __init detect_calgary(void)
 {
 	int bus;
@@ -1445,6 +1448,8 @@ void __init detect_calgary(void)
 		/* swiotlb for devices that aren't behind the Calgary. */
 		if (max_pfn > MAX_DMA32_PFN)
 			swiotlb = 1;
+
+		x86_init.iommu.iommu_init = calgary_iommu_init;
 	}
 	return;
 
@@ -1461,12 +1466,6 @@ int __init calgary_iommu_init(void)
 {
 	int ret;
 
-	if (no_iommu || (swiotlb && !calgary_detected))
-		return -ENODEV;
-
-	if (!calgary_detected)
-		return -ENODEV;
-
 	/* ok, we're trying to use Calgary - let's roll */
 	printk(KERN_INFO "PCI-DMA: Using Calgary IOMMU\n");
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index a13478d..0224da8 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -294,8 +294,6 @@ static int __init pci_iommu_init(void)
 
 	x86_init.iommu.iommu_init();
 
-	calgary_iommu_init();
-
 	intel_iommu_init();
 
 	amd_iommu_init();
-- 
1.5.6.5

[tip:core/iommu] x86: Calgary: Convert detect_calgary() to use iommu_init hook

[tip-bot for FUJITA Tomonori]

Commit-ID:  d7b9f7be216b04ff9d108f856bc03d96e7b3439c
Gitweb:     http://git.kernel.org/tip/d7b9f7be216b04ff9d108f856bc03d96e7b3439c
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:13 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:31:15 +0100

x86: Calgary: Convert detect_calgary() to use iommu_init hook

This changes detect_calgary() to set init_calgary() to
iommu_init hook if detect_calgary() finds the Calgary IOMMU.

We can kill the code to check if we found the IOMMU in
init_calgary() since detect_calgary() sets init_calgary() only
when it found the IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
LKML-Reference: <1257849980-22640-3-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/include/asm/calgary.h   |    2 --
 arch/x86/kernel/pci-calgary_64.c |   11 +++++------
 arch/x86/kernel/pci-dma.c        |    2 --
 3 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/arch/x86/include/asm/calgary.h b/arch/x86/include/asm/calgary.h
index b03bedb..0918654 100644
--- a/arch/x86/include/asm/calgary.h
+++ b/arch/x86/include/asm/calgary.h
@@ -62,10 +62,8 @@ struct cal_chipset_ops {
 extern int use_calgary;
 
 #ifdef CONFIG_CALGARY_IOMMU
-extern int calgary_iommu_init(void);
 extern void detect_calgary(void);
 #else
-static inline int calgary_iommu_init(void) { return 1; }
 static inline void detect_calgary(void) { return; }
 #endif
 
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 971a3be..47bd419 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -46,6 +46,7 @@
 #include <asm/dma.h>
 #include <asm/rio.h>
 #include <asm/bios_ebda.h>
+#include <asm/x86_init.h>
 
 #ifdef CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT
 int use_calgary __read_mostly = 1;
@@ -1344,6 +1345,8 @@ static void __init get_tce_space_from_tar(void)
 	return;
 }
 
+int __init calgary_iommu_init(void);
+
 void __init detect_calgary(void)
 {
 	int bus;
@@ -1445,6 +1448,8 @@ void __init detect_calgary(void)
 		/* swiotlb for devices that aren't behind the Calgary. */
 		if (max_pfn > MAX_DMA32_PFN)
 			swiotlb = 1;
+
+		x86_init.iommu.iommu_init = calgary_iommu_init;
 	}
 	return;
 
@@ -1461,12 +1466,6 @@ int __init calgary_iommu_init(void)
 {
 	int ret;
 
-	if (no_iommu || (swiotlb && !calgary_detected))
-		return -ENODEV;
-
-	if (!calgary_detected)
-		return -ENODEV;
-
 	/* ok, we're trying to use Calgary - let's roll */
 	printk(KERN_INFO "PCI-DMA: Using Calgary IOMMU\n");
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index a13478d..0224da8 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -294,8 +294,6 @@ static int __init pci_iommu_init(void)
 
 	x86_init.iommu.iommu_init();
 
-	calgary_iommu_init();
-
 	intel_iommu_init();
 
 	amd_iommu_init();

[PATCH -v2 3/9] GART: convert gart_iommu_hole_init to use iommu_init hook

[FUJITA Tomonori]

This changes gart_iommu_hole_init() to set gart_iommu_init() to
iommu_init hook if gart_iommu_hole_init() finds the GART IOMMU.

We can kill the code to check if we found the IOMMU in
gart_iommu_init() since gart_iommu_hole_init() sets gart_iommu_init()
only when it found the IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 arch/x86/include/asm/gart.h   |    5 +----
 arch/x86/kernel/aperture_64.c |    2 ++
 arch/x86/kernel/pci-dma.c     |    2 --
 arch/x86/kernel/pci-gart_64.c |   15 +++++----------
 4 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/arch/x86/include/asm/gart.h b/arch/x86/include/asm/gart.h
index 4fdd5b3..4ac5b0f 100644
--- a/arch/x86/include/asm/gart.h
+++ b/arch/x86/include/asm/gart.h
@@ -35,7 +35,7 @@ extern int gart_iommu_aperture_allowed;
 extern int gart_iommu_aperture_disabled;
 
 extern void early_gart_iommu_check(void);
-extern void gart_iommu_init(void);
+extern int gart_iommu_init(void);
 extern void __init gart_parse_options(char *);
 extern void gart_iommu_hole_init(void);
 
@@ -47,9 +47,6 @@ extern void gart_iommu_hole_init(void);
 static inline void early_gart_iommu_check(void)
 {
 }
-static inline void gart_iommu_init(void)
-{
-}
 static inline void gart_parse_options(char *options)
 {
 }
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 128111d..03933cf 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -28,6 +28,7 @@
 #include <asm/pci-direct.h>
 #include <asm/dma.h>
 #include <asm/k8.h>
+#include <asm/x86_init.h>
 
 int gart_iommu_aperture;
 int gart_iommu_aperture_disabled __initdata;
@@ -400,6 +401,7 @@ void __init gart_iommu_hole_init(void)
 
 			iommu_detected = 1;
 			gart_iommu_aperture = 1;
+			x86_init.iommu.iommu_init = gart_iommu_init;
 
 			aper_order = (read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL) >> 1) & 7;
 			aper_size = (32 * 1024 * 1024) << aper_order;
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 0224da8..ecde854 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -298,8 +298,6 @@ static int __init pci_iommu_init(void)
 
 	amd_iommu_init();
 
-	gart_iommu_init();
-
 	no_iommu_init();
 	return 0;
 }
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index eb46ab3..0410bd3 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -709,7 +709,7 @@ static void gart_iommu_shutdown(void)
 	}
 }
 
-void __init gart_iommu_init(void)
+int __init gart_iommu_init(void)
 {
 	struct agp_kern_info info;
 	unsigned long iommu_start;
@@ -719,7 +719,7 @@ void __init gart_iommu_init(void)
 	long i;
 
 	if (cache_k8_northbridges() < 0 || num_k8_northbridges == 0)
-		return;
+		return 0;
 
 #ifndef CONFIG_AGP_AMD64
 	no_agp = 1;
@@ -731,13 +731,6 @@ void __init gart_iommu_init(void)
 		(agp_copy_info(agp_bridge, &info) < 0);
 #endif
 
-	if (swiotlb)
-		return;
-
-	/* Did we detect a different HW IOMMU? */
-	if (iommu_detected && !gart_iommu_aperture)
-		return;
-
 	if (no_iommu ||
 	    (!force_iommu && max_pfn <= MAX_DMA32_PFN) ||
 	    !gart_iommu_aperture ||
@@ -747,7 +740,7 @@ void __init gart_iommu_init(void)
 			       "but GART IOMMU not available.\n");
 			printk(KERN_WARNING "falling back to iommu=soft.\n");
 		}
-		return;
+		return 0;
 	}
 
 	/* need to map that range */
@@ -840,6 +833,8 @@ void __init gart_iommu_init(void)
 	flush_gart();
 	dma_ops = &gart_dma_ops;
 	x86_platform.iommu_shutdown = gart_iommu_shutdown;
+
+	return 0;
 }
 
 void __init gart_parse_options(char *p)
-- 
1.5.6.5

[tip:core/iommu] x86: GART: Convert gart_iommu_hole_init() to use iommu_init hook

[tip-bot for FUJITA Tomonori]

Commit-ID:  de957628ce7c84764ff41331111036b3ae5bad0f
Gitweb:     http://git.kernel.org/tip/de957628ce7c84764ff41331111036b3ae5bad0f
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:14 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:31:23 +0100

x86: GART: Convert gart_iommu_hole_init() to use iommu_init hook

This changes gart_iommu_hole_init() to set gart_iommu_init() to
iommu_init hook if gart_iommu_hole_init() finds the GART IOMMU.

We can kill the code to check if we found the IOMMU in
gart_iommu_init() since gart_iommu_hole_init() sets
gart_iommu_init() only when it found the IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-4-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/include/asm/gart.h   |    5 +----
 arch/x86/kernel/aperture_64.c |    2 ++
 arch/x86/kernel/pci-dma.c     |    2 --
 arch/x86/kernel/pci-gart_64.c |   15 +++++----------
 4 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/arch/x86/include/asm/gart.h b/arch/x86/include/asm/gart.h
index 4fdd5b3..4ac5b0f 100644
--- a/arch/x86/include/asm/gart.h
+++ b/arch/x86/include/asm/gart.h
@@ -35,7 +35,7 @@ extern int gart_iommu_aperture_allowed;
 extern int gart_iommu_aperture_disabled;
 
 extern void early_gart_iommu_check(void);
-extern void gart_iommu_init(void);
+extern int gart_iommu_init(void);
 extern void __init gart_parse_options(char *);
 extern void gart_iommu_hole_init(void);
 
@@ -47,9 +47,6 @@ extern void gart_iommu_hole_init(void);
 static inline void early_gart_iommu_check(void)
 {
 }
-static inline void gart_iommu_init(void)
-{
-}
 static inline void gart_parse_options(char *options)
 {
 }
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 128111d..03933cf 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -28,6 +28,7 @@
 #include <asm/pci-direct.h>
 #include <asm/dma.h>
 #include <asm/k8.h>
+#include <asm/x86_init.h>
 
 int gart_iommu_aperture;
 int gart_iommu_aperture_disabled __initdata;
@@ -400,6 +401,7 @@ void __init gart_iommu_hole_init(void)
 
 			iommu_detected = 1;
 			gart_iommu_aperture = 1;
+			x86_init.iommu.iommu_init = gart_iommu_init;
 
 			aper_order = (read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL) >> 1) & 7;
 			aper_size = (32 * 1024 * 1024) << aper_order;
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 0224da8..ecde854 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -298,8 +298,6 @@ static int __init pci_iommu_init(void)
 
 	amd_iommu_init();
 
-	gart_iommu_init();
-
 	no_iommu_init();
 	return 0;
 }
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index eb46ab3..0410bd3 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -709,7 +709,7 @@ static void gart_iommu_shutdown(void)
 	}
 }
 
-void __init gart_iommu_init(void)
+int __init gart_iommu_init(void)
 {
 	struct agp_kern_info info;
 	unsigned long iommu_start;
@@ -719,7 +719,7 @@ void __init gart_iommu_init(void)
 	long i;
 
 	if (cache_k8_northbridges() < 0 || num_k8_northbridges == 0)
-		return;
+		return 0;
 
 #ifndef CONFIG_AGP_AMD64
 	no_agp = 1;
@@ -731,13 +731,6 @@ void __init gart_iommu_init(void)
 		(agp_copy_info(agp_bridge, &info) < 0);
 #endif
 
-	if (swiotlb)
-		return;
-
-	/* Did we detect a different HW IOMMU? */
-	if (iommu_detected && !gart_iommu_aperture)
-		return;
-
 	if (no_iommu ||
 	    (!force_iommu && max_pfn <= MAX_DMA32_PFN) ||
 	    !gart_iommu_aperture ||
@@ -747,7 +740,7 @@ void __init gart_iommu_init(void)
 			       "but GART IOMMU not available.\n");
 			printk(KERN_WARNING "falling back to iommu=soft.\n");
 		}
-		return;
+		return 0;
 	}
 
 	/* need to map that range */
@@ -840,6 +833,8 @@ void __init gart_iommu_init(void)
 	flush_gart();
 	dma_ops = &gart_dma_ops;
 	x86_platform.iommu_shutdown = gart_iommu_shutdown;
+
+	return 0;
 }
 
 void __init gart_parse_options(char *p)

[PATCH -v2 4/9] amd_iommu: convert amd_iommu_detect to use iommu_init hook

[FUJITA Tomonori]

This changes amd_iommu_detect() to set amd_iommu_init to
iommu_init hook if amd_iommu_detect() finds the AMD IOMMU.

We can kill the code to check if we found the IOMMU in
amd_iommu_init() since amd_iommu_detect() sets amd_iommu_init() only
when it found the IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 arch/x86/include/asm/amd_iommu.h |    2 --
 arch/x86/kernel/amd_iommu_init.c |   17 +++--------------
 arch/x86/kernel/pci-dma.c        |    2 --
 3 files changed, 3 insertions(+), 18 deletions(-)

diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h
index 3604669..b8ef2ee 100644
--- a/arch/x86/include/asm/amd_iommu.h
+++ b/arch/x86/include/asm/amd_iommu.h
@@ -23,7 +23,6 @@
 #include <linux/irqreturn.h>
 
 #ifdef CONFIG_AMD_IOMMU
-extern int amd_iommu_init(void);
 extern int amd_iommu_init_dma_ops(void);
 extern int amd_iommu_init_passthrough(void);
 extern void amd_iommu_detect(void);
@@ -32,7 +31,6 @@ extern void amd_iommu_flush_all_domains(void);
 extern void amd_iommu_flush_all_devices(void);
 extern void amd_iommu_apply_erratum_63(u16 devid);
 #else
-static inline int amd_iommu_init(void) { return -ENODEV; }
 static inline void amd_iommu_detect(void) { }
 #endif
 
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 6acd43e..c41aabd 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -29,6 +29,7 @@
 #include <asm/amd_iommu.h>
 #include <asm/iommu.h>
 #include <asm/gart.h>
+#include <asm/x86_init.h>
 
 /*
  * definitions for the ACPI scanning code
@@ -1176,19 +1177,10 @@ static struct sys_device device_amd_iommu = {
  * functions. Finally it prints some information about AMD IOMMUs and
  * the driver state and enables the hardware.
  */
-int __init amd_iommu_init(void)
+static int __init amd_iommu_init(void)
 {
 	int i, ret = 0;
 
-
-	if (no_iommu) {
-		printk(KERN_INFO "AMD-Vi disabled by kernel command line\n");
-		return 0;
-	}
-
-	if (!amd_iommu_detected)
-		return -ENODEV;
-
 	/*
 	 * First parse ACPI tables to find the largest Bus/Dev/Func
 	 * we need to handle. Upon this information the shared data
@@ -1344,10 +1336,7 @@ void __init amd_iommu_detect(void)
 	if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) {
 		iommu_detected = 1;
 		amd_iommu_detected = 1;
-#ifdef CONFIG_GART_IOMMU
-		gart_iommu_aperture_disabled = 1;
-		gart_iommu_aperture = 0;
-#endif
+		x86_init.iommu.iommu_init = amd_iommu_init;
 	}
 }
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index ecde854..5ca44a9 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -296,8 +296,6 @@ static int __init pci_iommu_init(void)
 
 	intel_iommu_init();
 
-	amd_iommu_init();
-
 	no_iommu_init();
 	return 0;
 }
-- 
1.5.6.5

[tip:core/iommu] x86: amd_iommu: Convert amd_iommu_detect() to use iommu_init hook

[tip-bot for FUJITA Tomonori]

Commit-ID:  ea1b0d3945c7374849235b6ecaea1191ee1d9d50
Gitweb:     http://git.kernel.org/tip/ea1b0d3945c7374849235b6ecaea1191ee1d9d50
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:15 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:31:30 +0100

x86: amd_iommu: Convert amd_iommu_detect() to use iommu_init hook

This changes amd_iommu_detect() to set amd_iommu_init to
iommu_init hook if amd_iommu_detect() finds the AMD IOMMU.

We can kill the code to check if we found the IOMMU in
amd_iommu_init() since amd_iommu_detect() sets amd_iommu_init()
only when it found the IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-5-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/include/asm/amd_iommu.h |    2 --
 arch/x86/kernel/amd_iommu_init.c |   17 +++--------------
 arch/x86/kernel/pci-dma.c        |    2 --
 3 files changed, 3 insertions(+), 18 deletions(-)

diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h
index 3604669..b8ef2ee 100644
--- a/arch/x86/include/asm/amd_iommu.h
+++ b/arch/x86/include/asm/amd_iommu.h
@@ -23,7 +23,6 @@
 #include <linux/irqreturn.h>
 
 #ifdef CONFIG_AMD_IOMMU
-extern int amd_iommu_init(void);
 extern int amd_iommu_init_dma_ops(void);
 extern int amd_iommu_init_passthrough(void);
 extern void amd_iommu_detect(void);
@@ -32,7 +31,6 @@ extern void amd_iommu_flush_all_domains(void);
 extern void amd_iommu_flush_all_devices(void);
 extern void amd_iommu_apply_erratum_63(u16 devid);
 #else
-static inline int amd_iommu_init(void) { return -ENODEV; }
 static inline void amd_iommu_detect(void) { }
 #endif
 
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 6acd43e..c41aabd 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -29,6 +29,7 @@
 #include <asm/amd_iommu.h>
 #include <asm/iommu.h>
 #include <asm/gart.h>
+#include <asm/x86_init.h>
 
 /*
  * definitions for the ACPI scanning code
@@ -1176,19 +1177,10 @@ static struct sys_device device_amd_iommu = {
  * functions. Finally it prints some information about AMD IOMMUs and
  * the driver state and enables the hardware.
  */
-int __init amd_iommu_init(void)
+static int __init amd_iommu_init(void)
 {
 	int i, ret = 0;
 
-
-	if (no_iommu) {
-		printk(KERN_INFO "AMD-Vi disabled by kernel command line\n");
-		return 0;
-	}
-
-	if (!amd_iommu_detected)
-		return -ENODEV;
-
 	/*
 	 * First parse ACPI tables to find the largest Bus/Dev/Func
 	 * we need to handle. Upon this information the shared data
@@ -1344,10 +1336,7 @@ void __init amd_iommu_detect(void)
 	if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) {
 		iommu_detected = 1;
 		amd_iommu_detected = 1;
-#ifdef CONFIG_GART_IOMMU
-		gart_iommu_aperture_disabled = 1;
-		gart_iommu_aperture = 0;
-#endif
+		x86_init.iommu.iommu_init = amd_iommu_init;
 	}
 }
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index ecde854..5ca44a9 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -296,8 +296,6 @@ static int __init pci_iommu_init(void)
 
 	intel_iommu_init();
 
-	amd_iommu_init();
-
 	no_iommu_init();
 	return 0;
 }

[PATCH -v2 5/9] intel-iommu: convert detect_intel_iommu to use iommu_init hook

[FUJITA Tomonori]

This changes detect_intel_iommu() to set intel_iommu_init() to
iommu_init hook if detect_intel_iommu() finds the IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 arch/x86/kernel/pci-dma.c |    2 --
 drivers/pci/dmar.c        |    4 ++++
 include/linux/dmar.h      |   10 ----------
 3 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 5ca44a9..bed05e2 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -294,8 +294,6 @@ static int __init pci_iommu_init(void)
 
 	x86_init.iommu.iommu_init();
 
-	intel_iommu_init();
-
 	no_iommu_init();
 	return 0;
 }
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 22b02c6..bce9cd7 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -617,6 +617,10 @@ void __init detect_intel_iommu(void)
 		    !dmar_disabled)
 			iommu_detected = 1;
 #endif
+#ifdef CONFIG_X86
+		if (ret)
+			x86_init.iommu.iommu_init = intel_iommu_init;
+#endif
 	}
 	early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size);
 	dmar_tbl = NULL;
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index a05cd1c..d814d7d 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -218,16 +218,6 @@ struct dmar_atsr_unit {
 	u8 include_all:1;		/* include all ports */
 };
 
-/* Intel DMAR  initialization functions */
 extern int intel_iommu_init(void);
-#else
-static inline int intel_iommu_init(void)
-{
-#ifdef CONFIG_INTR_REMAP
-	return dmar_dev_scope_init();
-#else
-	return -ENODEV;
 #endif
-}
-#endif /* !CONFIG_DMAR */
 #endif /* __DMAR_H__ */
-- 
1.5.6.5

Re: [PATCH -v2 5/9] intel-iommu: convert detect_intel_iommu to use iommu_init hook

[Ingo Molnar]

* FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:

> This changes detect_intel_iommu() to set intel_iommu_init() to
> iommu_init hook if detect_intel_iommu() finds the IOMMU.
> 
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> ---
>  arch/x86/kernel/pci-dma.c |    2 --
>  drivers/pci/dmar.c        |    4 ++++
>  include/linux/dmar.h      |   10 ----------
>  3 files changed, 4 insertions(+), 12 deletions(-)

FYI, the !CONFIG_DMAR case needed the fix below. (Wrt. the -ENODEV: it 
doesnt matter right now as we dont check the result of ->iommu_init(), 
but i kept it consistent with device initialization principles.)

	Ingo

diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index d814d7d..df0cfb3 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -219,5 +219,8 @@ struct dmar_atsr_unit {
 };
 
 extern int intel_iommu_init(void);
-#endif
+#else /* !CONFIG_DMAR: */
+static inline int intel_iommu_init(void) { return -ENODEV; }
+#endif /* CONFIG_DMAR */
+
 #endif /* __DMAR_H__ */

[tip:core/iommu] x86: intel-iommu: Convert detect_intel_iommu to use iommu_init hook

[tip-bot for FUJITA Tomonori]

Commit-ID:  9d5ce73a64be2be8112147a3e0b551ad9cd1247b
Gitweb:     http://git.kernel.org/tip/9d5ce73a64be2be8112147a3e0b551ad9cd1247b
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:16 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:31:36 +0100

x86: intel-iommu: Convert detect_intel_iommu to use iommu_init hook

This changes detect_intel_iommu() to set intel_iommu_init() to
iommu_init hook if detect_intel_iommu() finds the IOMMU.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-6-git-send-email-fujita.tomonori@lab.ntt.co.jp>
[ -v2: build fix for the !CONFIG_DMAR case ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/pci-dma.c |    2 --
 drivers/pci/dmar.c        |    4 ++++
 include/linux/dmar.h      |   15 ++++-----------
 3 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 5ca44a9..bed05e2 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -294,8 +294,6 @@ static int __init pci_iommu_init(void)
 
 	x86_init.iommu.iommu_init();
 
-	intel_iommu_init();
-
 	no_iommu_init();
 	return 0;
 }
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 22b02c6..bce9cd7 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -617,6 +617,10 @@ void __init detect_intel_iommu(void)
 		    !dmar_disabled)
 			iommu_detected = 1;
 #endif
+#ifdef CONFIG_X86
+		if (ret)
+			x86_init.iommu.iommu_init = intel_iommu_init;
+#endif
 	}
 	early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size);
 	dmar_tbl = NULL;
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 4a2b162..5de4c9e 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -208,16 +208,9 @@ struct dmar_atsr_unit {
 	u8 include_all:1;		/* include all ports */
 };
 
-/* Intel DMAR  initialization functions */
 extern int intel_iommu_init(void);
-#else
-static inline int intel_iommu_init(void)
-{
-#ifdef CONFIG_INTR_REMAP
-	return dmar_dev_scope_init();
-#else
-	return -ENODEV;
-#endif
-}
-#endif /* !CONFIG_DMAR */
+#else /* !CONFIG_DMAR: */
+static inline int intel_iommu_init(void) { return -ENODEV; }
+#endif /* CONFIG_DMAR */
+
 #endif /* __DMAR_H__ */

[PATCH -v2 6/9] bootmem: add free_bootmem_late

[FUJITA Tomonori]

Add a new function for freeing bootmem after the bootmem allocator has
been released and the unreserved pages given to the page allocator.
This allows us to reserve bootmem and then release it if we later
discover it was not needed.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: hannes@cmpxchg.org
Cc: akpm@linux-foundation.org
Cc: tj@kernel.org
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
---
 include/linux/bootmem.h |    1 +
 mm/bootmem.c            |   24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index dd97fb8..b10ec49 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -53,6 +53,7 @@ extern void free_bootmem_node(pg_data_t *pgdat,
 			      unsigned long addr,
 			      unsigned long size);
 extern void free_bootmem(unsigned long addr, unsigned long size);
+extern void free_bootmem_late(unsigned long addr, unsigned long size);
 
 /*
  * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE,
diff --git a/mm/bootmem.c b/mm/bootmem.c
index ca92991..30f1702 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -143,6 +143,30 @@ unsigned long __init init_bootmem(unsigned long start, unsigned long pages)
 	return init_bootmem_core(NODE_DATA(0)->bdata, start, 0, pages);
 }
 
+/*
+ * free_bootmem_late - free bootmem pages directly to page allocator
+ * @addr: starting address of the range
+ * @size: size of the range in bytes
+ *
+ * This is only useful when the bootmem allocator has already been torn
+ * down, but we are still initializing the system.  Pages are given directly
+ * to the page allocator, no bootmem metadata is updated because it is gone.
+ */
+void __init free_bootmem_late(unsigned long addr, unsigned long size)
+{
+	unsigned long cursor, end;
+
+	kmemleak_free_part(__va(addr), size);
+
+	cursor = PFN_UP(addr);
+	end = PFN_DOWN(addr + size);
+
+	for (; cursor < end; cursor++) {
+		__free_pages_bootmem(pfn_to_page(cursor), 0);
+		totalram_pages++;
+	}
+}
+
 static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
 {
 	int aligned;
-- 
1.5.6.5

Re: [PATCH -v2 6/9] bootmem: add free_bootmem_late

[Johannes Weiner]

On Tue, Nov 10, 2009 at 07:46:17PM +0900, FUJITA Tomonori wrote:
> Add a new function for freeing bootmem after the bootmem allocator has
> been released and the unreserved pages given to the page allocator.
> This allows us to reserve bootmem and then release it if we later
> discover it was not needed.
> 
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> Cc: hannes@cmpxchg.org
> Cc: akpm@linux-foundation.org
> Cc: tj@kernel.org
> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
> ---
>  include/linux/bootmem.h |    1 +
>  mm/bootmem.c            |   24 ++++++++++++++++++++++++
>  2 files changed, 25 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
> index dd97fb8..b10ec49 100644
> --- a/include/linux/bootmem.h
> +++ b/include/linux/bootmem.h
> @@ -53,6 +53,7 @@ extern void free_bootmem_node(pg_data_t *pgdat,
>  			      unsigned long addr,
>  			      unsigned long size);
>  extern void free_bootmem(unsigned long addr, unsigned long size);
> +extern void free_bootmem_late(unsigned long addr, unsigned long size);
>  
>  /*
>   * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE,
> diff --git a/mm/bootmem.c b/mm/bootmem.c
> index ca92991..30f1702 100644
> --- a/mm/bootmem.c
> +++ b/mm/bootmem.c
> @@ -143,6 +143,30 @@ unsigned long __init init_bootmem(unsigned long start, unsigned long pages)
>  	return init_bootmem_core(NODE_DATA(0)->bdata, start, 0, pages);
>  }
>  
> +/*
> + * free_bootmem_late - free bootmem pages directly to page allocator
> + * @addr: starting address of the range
> + * @size: size of the range in bytes
> + *
> + * This is only useful when the bootmem allocator has already been torn
> + * down, but we are still initializing the system.  Pages are given directly
> + * to the page allocator, no bootmem metadata is updated because it is gone.
> + */
> +void __init free_bootmem_late(unsigned long addr, unsigned long size)
> +{
> +	unsigned long cursor, end;
> +
> +	kmemleak_free_part(__va(addr), size);
> +
> +	cursor = PFN_UP(addr);
> +	end = PFN_DOWN(addr + size);
> +
> +	for (; cursor < end; cursor++) {
> +		__free_pages_bootmem(pfn_to_page(cursor), 0);
> +		totalram_pages++;
> +	}
> +}

I find it a bit weird that free_all_bootmem() callers have to take
care of totalram_pages while this function does the accounting on its
own.

And I think the function is more logically placed right below
free_bootmem(), like you did in the header.

These are no show-stoppers for me, though, and otherwise the patch
looks simple and straight-forward.  Feel free to add

	Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>

Thanks!

Re: [PATCH -v2 6/9] bootmem: add free_bootmem_late

[FUJITA Tomonori]

Thanks for reviewing,

On Tue, 10 Nov 2009 13:00:53 +0100
Johannes Weiner <hannes@cmpxchg.org> wrote:

> I find it a bit weird that free_all_bootmem() callers have to take
> care of totalram_pages while this function does the accounting on its
> own.

Ah, it might be consistent to make the callers take care of
totalram_pages like free_all_bootmem.


> And I think the function is more logically placed right below
> free_bootmem(), like you did in the header.

However, if we do the above, we have:

unsigned long free_bootmem_late(unsigned long addr, unsigned long
size)

Which looks inconsistent a bit with free_bootmem()?

[tip:core/iommu] bootmem: Add free_bootmem_late()

[tip-bot for FUJITA Tomonori]

Commit-ID:  9f993ac3f708b661207ed7de521f245586217a68
Gitweb:     http://git.kernel.org/tip/9f993ac3f708b661207ed7de521f245586217a68
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:17 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:31:43 +0100

bootmem: Add free_bootmem_late()

Add a new function for freeing bootmem after the bootmem
allocator has been released and the unreserved pages given to
the page allocator.

This allows us to reserve bootmem and then release it if we
later discover it was not needed.

( This new API will be used by the swiotlb code to recover
  a significant amount of RAM (64MB). )

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
Cc: hannes@cmpxchg.org
Cc: tj@kernel.org
Cc: akpm@linux-foundation.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1257849980-22640-7-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 include/linux/bootmem.h |    1 +
 mm/bootmem.c            |   24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index dd97fb8..b10ec49 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -53,6 +53,7 @@ extern void free_bootmem_node(pg_data_t *pgdat,
 			      unsigned long addr,
 			      unsigned long size);
 extern void free_bootmem(unsigned long addr, unsigned long size);
+extern void free_bootmem_late(unsigned long addr, unsigned long size);
 
 /*
  * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE,
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 555d5d2..d1dc23c 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -143,6 +143,30 @@ unsigned long __init init_bootmem(unsigned long start, unsigned long pages)
 	return init_bootmem_core(NODE_DATA(0)->bdata, start, 0, pages);
 }
 
+/*
+ * free_bootmem_late - free bootmem pages directly to page allocator
+ * @addr: starting address of the range
+ * @size: size of the range in bytes
+ *
+ * This is only useful when the bootmem allocator has already been torn
+ * down, but we are still initializing the system.  Pages are given directly
+ * to the page allocator, no bootmem metadata is updated because it is gone.
+ */
+void __init free_bootmem_late(unsigned long addr, unsigned long size)
+{
+	unsigned long cursor, end;
+
+	kmemleak_free_part(__va(addr), size);
+
+	cursor = PFN_UP(addr);
+	end = PFN_DOWN(addr + size);
+
+	for (; cursor < end; cursor++) {
+		__free_pages_bootmem(pfn_to_page(cursor), 0);
+		totalram_pages++;
+	}
+}
+
 static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
 {
 	int aligned;

Re: [PATCH -v2 6/9] bootmem: add free_bootmem_late

[Andrew Morton]

On Tue, 10 Nov 2009 19:46:17 +0900
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:

> Add a new function for freeing bootmem after the bootmem allocator has
> been released and the unreserved pages given to the page allocator.
> This allows us to reserve bootmem and then release it if we later
> discover it was not needed.

OK, but the new function has no callers and curious people will be
wondering what happened to patches 1, 2, 3, 4, 5, 7, 8 and 9!

What's the plan here?

Re: [PATCH -v2 6/9] bootmem: add free_bootmem_late

[Ingo Molnar]

* Andrew Morton <akpm@linux-foundation.org> wrote:

> On Tue, 10 Nov 2009 19:46:17 +0900
> FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
> 
> > Add a new function for freeing bootmem after the bootmem allocator has
> > been released and the unreserved pages given to the page allocator.
> > This allows us to reserve bootmem and then release it if we later
> > discover it was not needed.
> 
> OK, but the new function has no callers and curious people will be
> wondering what happened to patches 1, 2, 3, 4, 5, 7, 8 and 9!

They were posted to lkml alongside patch 6 - see this thread on lkml:

 [PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully

	Ingo

[PATCH -v2 7/9] swiotlb: add swiotlb_free function

[FUJITA Tomonori]

swiotlb_free function frees all allocated memory for swiotlb.

We need to initialize swiotlb before IOMMU initialization (x86 and
powerpc needs to allocate memory from bootmem allocator). If IOMMU
initialization is successful, we need to free swiotlb resource (don't
want to waste 64MB).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 include/linux/swiotlb.h |    1 +
 lib/swiotlb.c           |   30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 73b1f1c..51b6cc2 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -88,4 +88,5 @@ swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
 extern int
 swiotlb_dma_supported(struct device *hwdev, u64 mask);
 
+extern void __init swiotlb_free(void);
 #endif /* __LINUX_SWIOTLB_H */
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index ac25cd2..eee512b 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -97,6 +97,8 @@ static phys_addr_t *io_tlb_orig_addr;
  */
 static DEFINE_SPINLOCK(io_tlb_lock);
 
+static int late_alloc;
+
 static int __init
 setup_io_tlb_npages(char *str)
 {
@@ -262,6 +264,8 @@ swiotlb_late_init_with_default_size(size_t default_size)
 
 	swiotlb_print_info(bytes);
 
+	late_alloc = 1;
+
 	return 0;
 
 cleanup4:
@@ -281,6 +285,32 @@ cleanup1:
 	return -ENOMEM;
 }
 
+void __init swiotlb_free(void)
+{
+	if (!io_tlb_overflow_buffer)
+		return;
+
+	if (late_alloc) {
+		free_pages((unsigned long)io_tlb_overflow_buffer,
+			   get_order(io_tlb_overflow));
+		free_pages((unsigned long)io_tlb_orig_addr,
+			   get_order(io_tlb_nslabs * sizeof(phys_addr_t)));
+		free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs *
+								 sizeof(int)));
+		free_pages((unsigned long)io_tlb_start,
+			   get_order(io_tlb_nslabs << IO_TLB_SHIFT));
+	} else {
+		free_bootmem_late(__pa(io_tlb_overflow_buffer),
+				  io_tlb_overflow);
+		free_bootmem_late(__pa(io_tlb_orig_addr),
+				  io_tlb_nslabs * sizeof(phys_addr_t));
+		free_bootmem_late(__pa(io_tlb_list),
+				  io_tlb_nslabs * sizeof(int));
+		free_bootmem_late(__pa(io_tlb_start),
+				  io_tlb_nslabs << IO_TLB_SHIFT);
+	}
+}
+
 static int is_swiotlb_buffer(phys_addr_t paddr)
 {
 	return paddr >= virt_to_phys(io_tlb_start) &&
-- 
1.5.6.5

Re: [PATCH -v2 7/9] swiotlb: add swiotlb_free function

[Ingo Molnar]

this patch needed the fix below, for the !CONFIG_SWIOTLB case.

	Ingo

diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 6b70068..eb9bdb4 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -87,6 +87,11 @@ swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
 extern int
 swiotlb_dma_supported(struct device *hwdev, u64 mask);
 
+#ifdef CONFIG_SWIOTLB
 extern void __init swiotlb_free(void);
+#else
+static inline void swiotlb_free(void) { }
+#endif
+
 extern void swiotlb_print_info(void);
 #endif /* __LINUX_SWIOTLB_H */

[tip:core/iommu] swiotlb: Add swiotlb_free() function

[tip-bot for FUJITA Tomonori]

Commit-ID:  5740afdb68abadc473fd5392df733558a58c1254
Gitweb:     http://git.kernel.org/tip/5740afdb68abadc473fd5392df733558a58c1254
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:18 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:31:52 +0100

swiotlb: Add swiotlb_free() function

swiotlb_free() function frees all allocated memory for swiotlb.

We need to initialize swiotlb before IOMMU initialization (x86
and powerpc needs to allocate memory from bootmem allocator). If
IOMMU initialization is successful, we need to free swiotlb
resource (don't want to waste 64MB).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-8-git-send-email-fujita.tomonori@lab.ntt.co.jp>
[ -v2: build fix for the !CONFIG_SWIOTLB case ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 include/linux/swiotlb.h |    6 ++++++
 lib/swiotlb.c           |   30 ++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 0 deletions(-)

diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 73b1f1c..59bafa6 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -88,4 +88,10 @@ swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
 extern int
 swiotlb_dma_supported(struct device *hwdev, u64 mask);
 
+#ifdef CONFIG_SWIOTLB
+extern void __init swiotlb_free(void);
+#else
+static inline void swiotlb_free(void) { }
+#endif
+
 #endif /* __LINUX_SWIOTLB_H */
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index ac25cd2..eee512b 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -97,6 +97,8 @@ static phys_addr_t *io_tlb_orig_addr;
  */
 static DEFINE_SPINLOCK(io_tlb_lock);
 
+static int late_alloc;
+
 static int __init
 setup_io_tlb_npages(char *str)
 {
@@ -262,6 +264,8 @@ swiotlb_late_init_with_default_size(size_t default_size)
 
 	swiotlb_print_info(bytes);
 
+	late_alloc = 1;
+
 	return 0;
 
 cleanup4:
@@ -281,6 +285,32 @@ cleanup1:
 	return -ENOMEM;
 }
 
+void __init swiotlb_free(void)
+{
+	if (!io_tlb_overflow_buffer)
+		return;
+
+	if (late_alloc) {
+		free_pages((unsigned long)io_tlb_overflow_buffer,
+			   get_order(io_tlb_overflow));
+		free_pages((unsigned long)io_tlb_orig_addr,
+			   get_order(io_tlb_nslabs * sizeof(phys_addr_t)));
+		free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs *
+								 sizeof(int)));
+		free_pages((unsigned long)io_tlb_start,
+			   get_order(io_tlb_nslabs << IO_TLB_SHIFT));
+	} else {
+		free_bootmem_late(__pa(io_tlb_overflow_buffer),
+				  io_tlb_overflow);
+		free_bootmem_late(__pa(io_tlb_orig_addr),
+				  io_tlb_nslabs * sizeof(phys_addr_t));
+		free_bootmem_late(__pa(io_tlb_list),
+				  io_tlb_nslabs * sizeof(int));
+		free_bootmem_late(__pa(io_tlb_start),
+				  io_tlb_nslabs << IO_TLB_SHIFT);
+	}
+}
+
 static int is_swiotlb_buffer(phys_addr_t paddr)
 {
 	return paddr >= virt_to_phys(io_tlb_start) &&

[PATCH -v2 8/9] swiotlb: export swiotlb_print_info

[FUJITA Tomonori]

This enables us to avoid printing swiotlb memory info when we
initialize swiotlb. After swiotlb initialization, we could find that
we dont' need swiotlb.

This patch removes the code to print swiotlb memory info in
swiotlb_init() and exports the function to do that.

Cc: tony.luck@intel.com
Cc: benh@kernel.crashing.org
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 arch/ia64/kernel/pci-swiotlb.c |    4 ++--
 arch/powerpc/kernel/setup_32.c |    2 +-
 arch/powerpc/kernel/setup_64.c |    2 +-
 arch/x86/kernel/pci-swiotlb.c  |    3 +--
 include/linux/swiotlb.h        |    4 ++--
 lib/swiotlb.c                  |   15 ++++++++-------
 6 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
index 285aae8..53292ab 100644
--- a/arch/ia64/kernel/pci-swiotlb.c
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -41,7 +41,7 @@ struct dma_map_ops swiotlb_dma_ops = {
 void __init swiotlb_dma_init(void)
 {
 	dma_ops = &swiotlb_dma_ops;
-	swiotlb_init();
+	swiotlb_init(1);
 }
 
 void __init pci_swiotlb_init(void)
@@ -51,7 +51,7 @@ void __init pci_swiotlb_init(void)
 		swiotlb = 1;
 		printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
 		machvec_init("dig");
-		swiotlb_init();
+		swiotlb_init(1);
 		dma_ops = &swiotlb_dma_ops;
 #else
 		panic("Unable to find Intel IOMMU");
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 53bcf3d..b152de3 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -345,7 +345,7 @@ void __init setup_arch(char **cmdline_p)
 
 #ifdef CONFIG_SWIOTLB
 	if (ppc_swiotlb_enable)
-		swiotlb_init();
+		swiotlb_init(1);
 #endif
 
 	paging_init();
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 04f638d..df2c9e9 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -550,7 +550,7 @@ void __init setup_arch(char **cmdline_p)
 
 #ifdef CONFIG_SWIOTLB
 	if (ppc_swiotlb_enable)
-		swiotlb_init();
+		swiotlb_init(1);
 #endif
 
 	paging_init();
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index aaa6b78..ea20ef7 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -52,8 +52,7 @@ void __init pci_swiotlb_init(void)
 	if (swiotlb_force)
 		swiotlb = 1;
 	if (swiotlb) {
-		printk(KERN_INFO "PCI-DMA: Using software bounce buffering for IO (SWIOTLB)\n");
-		swiotlb_init();
+		swiotlb_init(0);
 		dma_ops = &swiotlb_dma_ops;
 	}
 }
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 51b6cc2..6b70068 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -20,8 +20,7 @@ struct scatterlist;
  */
 #define IO_TLB_SHIFT 11
 
-extern void
-swiotlb_init(void);
+extern void swiotlb_init(int verbose);
 
 extern void
 *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
@@ -89,4 +88,5 @@ extern int
 swiotlb_dma_supported(struct device *hwdev, u64 mask);
 
 extern void __init swiotlb_free(void);
+extern void swiotlb_print_info(void);
 #endif /* __LINUX_SWIOTLB_H */
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index eee512b..0c12d7c 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -123,8 +123,9 @@ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev,
 	return phys_to_dma(hwdev, virt_to_phys(address));
 }
 
-static void swiotlb_print_info(unsigned long bytes)
+void swiotlb_print_info(void)
 {
+	unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT;
 	phys_addr_t pstart, pend;
 
 	pstart = virt_to_phys(io_tlb_start);
@@ -142,7 +143,7 @@ static void swiotlb_print_info(unsigned long bytes)
  * structures for the software IO TLB used to implement the DMA API.
  */
 void __init
-swiotlb_init_with_default_size(size_t default_size)
+swiotlb_init_with_default_size(size_t default_size, int verbose)
 {
 	unsigned long i, bytes;
 
@@ -178,14 +179,14 @@ swiotlb_init_with_default_size(size_t default_size)
 	io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
 	if (!io_tlb_overflow_buffer)
 		panic("Cannot allocate SWIOTLB overflow buffer!\n");
-
-	swiotlb_print_info(bytes);
+	if (verbose)
+		swiotlb_print_info();
 }
 
 void __init
-swiotlb_init(void)
+swiotlb_init(int verbose)
 {
-	swiotlb_init_with_default_size(64 * (1<<20));	/* default to 64MB */
+	swiotlb_init_with_default_size(64 * (1<<20), verbose);	/* default to 64MB */
 }
 
 /*
@@ -262,7 +263,7 @@ swiotlb_late_init_with_default_size(size_t default_size)
 	if (!io_tlb_overflow_buffer)
 		goto cleanup4;
 
-	swiotlb_print_info(bytes);
+	swiotlb_print_info();
 
 	late_alloc = 1;
 
-- 
1.5.6.5

[tip:core/iommu] swiotlb: Defer swiotlb init printing, export swiotlb_print_info()

[tip-bot for FUJITA Tomonori]

Commit-ID:  ad32e8cb86e7894aac51c8963eaa9f36bb8a4e14
Gitweb:     http://git.kernel.org/tip/ad32e8cb86e7894aac51c8963eaa9f36bb8a4e14
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:19 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:32:00 +0100

swiotlb: Defer swiotlb init printing, export swiotlb_print_info()

This enables us to avoid printing swiotlb memory info when we
initialize swiotlb. After swiotlb initialization, we could find
that we don't need swiotlb.

This patch removes the code to print swiotlb memory info in
swiotlb_init() and exports the function to do that.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
Cc: tony.luck@intel.com
Cc: benh@kernel.crashing.org
LKML-Reference: <1257849980-22640-9-git-send-email-fujita.tomonori@lab.ntt.co.jp>
[ -v2: merge up conflict ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/ia64/kernel/pci-swiotlb.c |    4 ++--
 arch/powerpc/kernel/setup_32.c |    2 +-
 arch/powerpc/kernel/setup_64.c |    2 +-
 arch/x86/kernel/pci-swiotlb.c  |    3 +--
 include/linux/swiotlb.h        |    4 ++--
 lib/swiotlb.c                  |   15 ++++++++-------
 6 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
index 285aae8..53292ab 100644
--- a/arch/ia64/kernel/pci-swiotlb.c
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -41,7 +41,7 @@ struct dma_map_ops swiotlb_dma_ops = {
 void __init swiotlb_dma_init(void)
 {
 	dma_ops = &swiotlb_dma_ops;
-	swiotlb_init();
+	swiotlb_init(1);
 }
 
 void __init pci_swiotlb_init(void)
@@ -51,7 +51,7 @@ void __init pci_swiotlb_init(void)
 		swiotlb = 1;
 		printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
 		machvec_init("dig");
-		swiotlb_init();
+		swiotlb_init(1);
 		dma_ops = &swiotlb_dma_ops;
 #else
 		panic("Unable to find Intel IOMMU");
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 53bcf3d..b152de3 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -345,7 +345,7 @@ void __init setup_arch(char **cmdline_p)
 
 #ifdef CONFIG_SWIOTLB
 	if (ppc_swiotlb_enable)
-		swiotlb_init();
+		swiotlb_init(1);
 #endif
 
 	paging_init();
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 04f638d..df2c9e9 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -550,7 +550,7 @@ void __init setup_arch(char **cmdline_p)
 
 #ifdef CONFIG_SWIOTLB
 	if (ppc_swiotlb_enable)
-		swiotlb_init();
+		swiotlb_init(1);
 #endif
 
 	paging_init();
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index aaa6b78..ea20ef7 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -52,8 +52,7 @@ void __init pci_swiotlb_init(void)
 	if (swiotlb_force)
 		swiotlb = 1;
 	if (swiotlb) {
-		printk(KERN_INFO "PCI-DMA: Using software bounce buffering for IO (SWIOTLB)\n");
-		swiotlb_init();
+		swiotlb_init(0);
 		dma_ops = &swiotlb_dma_ops;
 	}
 }
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 59bafa6..eb9bdb4 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -20,8 +20,7 @@ struct scatterlist;
  */
 #define IO_TLB_SHIFT 11
 
-extern void
-swiotlb_init(void);
+extern void swiotlb_init(int verbose);
 
 extern void
 *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
@@ -94,4 +93,5 @@ extern void __init swiotlb_free(void);
 static inline void swiotlb_free(void) { }
 #endif
 
+extern void swiotlb_print_info(void);
 #endif /* __LINUX_SWIOTLB_H */
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index eee512b..0c12d7c 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -123,8 +123,9 @@ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev,
 	return phys_to_dma(hwdev, virt_to_phys(address));
 }
 
-static void swiotlb_print_info(unsigned long bytes)
+void swiotlb_print_info(void)
 {
+	unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT;
 	phys_addr_t pstart, pend;
 
 	pstart = virt_to_phys(io_tlb_start);
@@ -142,7 +143,7 @@ static void swiotlb_print_info(unsigned long bytes)
  * structures for the software IO TLB used to implement the DMA API.
  */
 void __init
-swiotlb_init_with_default_size(size_t default_size)
+swiotlb_init_with_default_size(size_t default_size, int verbose)
 {
 	unsigned long i, bytes;
 
@@ -178,14 +179,14 @@ swiotlb_init_with_default_size(size_t default_size)
 	io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
 	if (!io_tlb_overflow_buffer)
 		panic("Cannot allocate SWIOTLB overflow buffer!\n");
-
-	swiotlb_print_info(bytes);
+	if (verbose)
+		swiotlb_print_info();
 }
 
 void __init
-swiotlb_init(void)
+swiotlb_init(int verbose)
 {
-	swiotlb_init_with_default_size(64 * (1<<20));	/* default to 64MB */
+	swiotlb_init_with_default_size(64 * (1<<20), verbose);	/* default to 64MB */
 }
 
 /*
@@ -262,7 +263,7 @@ swiotlb_late_init_with_default_size(size_t default_size)
 	if (!io_tlb_overflow_buffer)
 		goto cleanup4;
 
-	swiotlb_print_info(bytes);
+	swiotlb_print_info();
 
 	late_alloc = 1;
 

[PATCH -v2 9/9] x86: handle HW IOMMU initialization failure gracely

[FUJITA Tomonori]

If HW IOMMU initialization fails (Intel VT-d often does typically due
to BIOS bugs), we fall back to nommu. It doesn't work for the majority
since nowadays we have more than 4GB memory so we must use swiotlb
instead of nommu.

The problem is that it's too late to initialize swiotlb when HW IOMMU
initialization fails. We need to allocate swiotlb memory earlier from
bootmem allocator. Chris explained the issue in detail:

http://marc.info/?l=linux-kernel&m=125657444317079&w=2

The current x86 IOMMU initialization sequence is too complicated and
handling the above issue makes it more hacky.

This patch changes x86 IOMMU initialization sequence to handle the
above issue cleanly.

The new x86 IOMMU initialization sequence are:

1. initializing swiotlb (and setting swiotlb to 1) in the case of
(max_pfn > MAX_DMA32_PFN && !no_iommu). dma_ops is set to
swiotlb_dma_ops or nommu_dma_ops. if swiotlb usage is forced by the
boot option, we finish here.

2. calling the detection functions of all the IOMMUs

3. the detection function sets x86_init.iommu.iommu_init to the IOMMU
initialization function (so we can avoid calling the initialization
functions of all the IOMMUs needlessly).

4. if the IOMMU initialization function doesn't need to swiotlb then
sets swiotlb to zero (e.g. the initialization is sucessful).

5. if we find that swiotlb is set to zero, we free swiotlb resource.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 arch/x86/include/asm/iommu.h     |    1 -
 arch/x86/kernel/amd_iommu.c      |    2 +-
 arch/x86/kernel/amd_iommu_init.c |    2 +-
 arch/x86/kernel/aperture_64.c    |    2 +-
 arch/x86/kernel/pci-calgary_64.c |   10 +---------
 arch/x86/kernel/pci-dma.c        |   21 +++++++++++++--------
 arch/x86/kernel/pci-gart_64.c    |    1 +
 arch/x86/kernel/pci-nommu.c      |    9 ---------
 arch/x86/kernel/pci-swiotlb.c    |    7 +++----
 drivers/pci/dmar.c               |    3 +--
 drivers/pci/intel-iommu.c        |    4 ++--
 lib/swiotlb.c                    |    4 +++-
 12 files changed, 27 insertions(+), 39 deletions(-)

diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
index 878b307..df42a71 100644
--- a/arch/x86/include/asm/iommu.h
+++ b/arch/x86/include/asm/iommu.h
@@ -2,7 +2,6 @@
 #define _ASM_X86_IOMMU_H
 
 static inline void iommu_shutdown_noop(void) {}
-extern void no_iommu_init(void);
 extern struct dma_map_ops nommu_dma_ops;
 extern int force_iommu, no_iommu;
 extern int iommu_detected;
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 0285521..66237fd 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -2110,8 +2110,8 @@ int __init amd_iommu_init_dma_ops(void)
 		prealloc_protection_domains();
 
 	iommu_detected = 1;
-	force_iommu = 1;
 	bad_dma_address = 0;
+	swiotlb = 0;
 #ifdef CONFIG_GART_IOMMU
 	gart_iommu_aperture_disabled = 1;
 	gart_iommu_aperture = 0;
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c41aabd..0d4581e 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1330,7 +1330,7 @@ static int __init early_amd_iommu_detect(struct acpi_table_header *table)
 
 void __init amd_iommu_detect(void)
 {
-	if (swiotlb || no_iommu || (iommu_detected && !gart_iommu_aperture))
+	if (no_iommu || (iommu_detected && !gart_iommu_aperture))
 		return;
 
 	if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) {
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 03933cf..e0dfb68 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -458,7 +458,7 @@ out:
 
 	if (aper_alloc) {
 		/* Got the aperture from the AGP bridge */
-	} else if (swiotlb && !valid_agp) {
+	} else if (!valid_agp) {
 		/* Do nothing */
 	} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
 		   force_iommu ||
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 47bd419..833f491 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1360,7 +1360,7 @@ void __init detect_calgary(void)
 	 * if the user specified iommu=off or iommu=soft or we found
 	 * another HW IOMMU already, bail out.
 	 */
-	if (swiotlb || no_iommu || iommu_detected)
+	if (no_iommu || iommu_detected)
 		return;
 
 	if (!use_calgary)
@@ -1445,10 +1445,6 @@ void __init detect_calgary(void)
 		printk(KERN_INFO "PCI-DMA: Calgary TCE table spec is %d\n",
 		       specified_table_size);
 
-		/* swiotlb for devices that aren't behind the Calgary. */
-		if (max_pfn > MAX_DMA32_PFN)
-			swiotlb = 1;
-
 		x86_init.iommu.iommu_init = calgary_iommu_init;
 	}
 	return;
@@ -1476,11 +1472,7 @@ int __init calgary_iommu_init(void)
 		return ret;
 	}
 
-	force_iommu = 1;
 	bad_dma_address = 0x0;
-	/* dma_ops is set to swiotlb or nommu */
-	if (!dma_ops)
-		dma_ops = &nommu_dma_ops;
 
 	return 0;
 }
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index bed05e2..a234e63 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -124,24 +124,24 @@ static void __init dma32_free_bootmem(void)
 
 void __init pci_iommu_alloc(void)
 {
+	/* swiotlb is forced by the boot option */
+	int use_swiotlb = swiotlb;
 #ifdef CONFIG_X86_64
 	/* free the range so iommu could get some range less than 4G */
 	dma32_free_bootmem();
 #endif
+	pci_swiotlb_init();
+	if (use_swiotlb)
+		return;
 
-	/*
-	 * The order of these functions is important for
-	 * fall-back/fail-over reasons
-	 */
 	gart_iommu_hole_init();
 
 	detect_calgary();
 
 	detect_intel_iommu();
 
+	/* needs to be called after gart_iommu_hole_init */
 	amd_iommu_detect();
-
-	pci_swiotlb_init();
 }
 
 void *dma_generic_alloc_coherent(struct device *dev, size_t size,
@@ -291,10 +291,15 @@ static int __init pci_iommu_init(void)
 #ifdef CONFIG_PCI
 	dma_debug_add_bus(&pci_bus_type);
 #endif
-
 	x86_init.iommu.iommu_init();
 
-	no_iommu_init();
+	if (swiotlb) {
+		printk(KERN_INFO "PCI-DMA: "
+		       "Using software bounce buffering for IO (SWIOTLB)\n");
+		swiotlb_print_info();
+	} else
+		swiotlb_free();
+
 	return 0;
 }
 /* Must execute after PCI subsystem */
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 0410bd3..919182e 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -833,6 +833,7 @@ int __init gart_iommu_init(void)
 	flush_gart();
 	dma_ops = &gart_dma_ops;
 	x86_platform.iommu_shutdown = gart_iommu_shutdown;
+	swiotlb = 0;
 
 	return 0;
 }
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index a3933d4..875e382 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -103,12 +103,3 @@ struct dma_map_ops nommu_dma_ops = {
 	.sync_sg_for_device	= nommu_sync_sg_for_device,
 	.is_phys		= 1,
 };
-
-void __init no_iommu_init(void)
-{
-	if (dma_ops)
-		return;
-
-	force_iommu = 0; /* no HW IOMMU */
-	dma_ops = &nommu_dma_ops;
-}
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index ea20ef7..17ce422 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -46,13 +46,12 @@ void __init pci_swiotlb_init(void)
 {
 	/* don't initialize swiotlb if iommu=off (no_iommu=1) */
 #ifdef CONFIG_X86_64
-	if ((!iommu_detected && !no_iommu && max_pfn > MAX_DMA32_PFN))
+	if (!no_iommu && max_pfn > MAX_DMA32_PFN)
 		swiotlb = 1;
 #endif
-	if (swiotlb_force)
-		swiotlb = 1;
 	if (swiotlb) {
 		swiotlb_init(0);
 		dma_ops = &swiotlb_dma_ops;
-	}
+	} else
+		dma_ops = &nommu_dma_ops;
 }
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index bce9cd7..4373996 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -613,8 +613,7 @@ void __init detect_intel_iommu(void)
 			       "x2apic and Intr-remapping.\n");
 #endif
 #ifdef CONFIG_DMAR
-		if (ret && !no_iommu && !iommu_detected && !swiotlb &&
-		    !dmar_disabled)
+		if (ret && !no_iommu && !iommu_detected && !dmar_disabled)
 			iommu_detected = 1;
 #endif
 #ifdef CONFIG_X86
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index b1e97e6..c7a8bcf 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3231,7 +3231,7 @@ int __init intel_iommu_init(void)
 	 * Check the need for DMA-remapping initialization now.
 	 * Above initialization will also be used by Interrupt-remapping.
 	 */
-	if (no_iommu || swiotlb || dmar_disabled)
+	if (no_iommu || dmar_disabled)
 		return -ENODEV;
 
 	iommu_init_mempool();
@@ -3252,7 +3252,7 @@ int __init intel_iommu_init(void)
 	"PCI-DMA: Intel(R) Virtualization Technology for Directed I/O\n");
 
 	init_timer(&unmap_timer);
-	force_iommu = 1;
+	swiotlb = 0;
 	dma_ops = &intel_dma_ops;
 
 	init_iommu_sysfs();
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 0c12d7c..e6755a0 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -109,8 +109,10 @@ setup_io_tlb_npages(char *str)
 	}
 	if (*str == ',')
 		++str;
-	if (!strcmp(str, "force"))
+	if (!strcmp(str, "force")) {
 		swiotlb_force = 1;
+		swiotlb = 1;
+	}
 	return 1;
 }
 __setup("swiotlb=", setup_io_tlb_npages);
-- 
1.5.6.5

Re: [PATCH -v2 9/9] x86: handle HW IOMMU initialization failure gracely

[Ingo Molnar]

this patch needed the fixlet below. (it could be cleaned up later 
perhaps to not need the #ifdef - but wanted to keep it simple for now.)

	Ingo

------------->
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index c7a8bcf..43d755a 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3252,7 +3252,9 @@ int __init intel_iommu_init(void)
 	"PCI-DMA: Intel(R) Virtualization Technology for Directed I/O\n");
 
 	init_timer(&unmap_timer);
+#ifdef CONFIG_SWIOTLB
 	swiotlb = 0;
+#endif
 	dma_ops = &intel_dma_ops;
 
 	init_iommu_sysfs();

[tip:core/iommu] x86: Handle HW IOMMU initialization failure gracefully

[tip-bot for FUJITA Tomonori]

Commit-ID:  75f1cdf1dda92cae037ec848ae63690d91913eac
Gitweb:     http://git.kernel.org/tip/75f1cdf1dda92cae037ec848ae63690d91913eac
Author:     FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
AuthorDate: Tue, 10 Nov 2009 19:46:20 +0900
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 10 Nov 2009 12:32:07 +0100

x86: Handle HW IOMMU initialization failure gracefully

If HW IOMMU initialization fails (Intel VT-d often does this,
typically due to BIOS bugs), we fall back to nommu. It doesn't
work for the majority since nowadays we have more than 4GB
memory so we must use swiotlb instead of nommu.

The problem is that it's too late to initialize swiotlb when HW
IOMMU initialization fails. We need to allocate swiotlb memory
earlier from bootmem allocator. Chris explained the issue in
detail:

  http://marc.info/?l=linux-kernel&m=125657444317079&w=2

The current x86 IOMMU initialization sequence is too complicated
and handling the above issue makes it more hacky.

This patch changes x86 IOMMU initialization sequence to handle
the above issue cleanly.

The new x86 IOMMU initialization sequence are:

1. we initialize the swiotlb (and setting swiotlb to 1) in the case
   of (max_pfn > MAX_DMA32_PFN && !no_iommu). dma_ops is set to
   swiotlb_dma_ops or nommu_dma_ops. if swiotlb usage is forced by
   the boot option, we finish here.

2. we call the detection functions of all the IOMMUs

3. the detection function sets x86_init.iommu.iommu_init to the
   IOMMU initialization function (so we can avoid calling the
   initialization functions of all the IOMMUs needlessly).

4. if the IOMMU initialization function doesn't need to swiotlb
   then sets swiotlb to zero (e.g. the initialization is
   sucessful).

5. if we find that swiotlb is set to zero, we free swiotlb
   resource.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-10-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/include/asm/iommu.h     |    1 -
 arch/x86/kernel/amd_iommu.c      |    2 +-
 arch/x86/kernel/amd_iommu_init.c |    2 +-
 arch/x86/kernel/aperture_64.c    |    2 +-
 arch/x86/kernel/pci-calgary_64.c |   10 +---------
 arch/x86/kernel/pci-dma.c        |   21 +++++++++++++--------
 arch/x86/kernel/pci-gart_64.c    |    1 +
 arch/x86/kernel/pci-nommu.c      |    9 ---------
 arch/x86/kernel/pci-swiotlb.c    |    7 +++----
 drivers/pci/dmar.c               |    3 +--
 drivers/pci/intel-iommu.c        |    6 ++++--
 lib/swiotlb.c                    |    4 +++-
 12 files changed, 29 insertions(+), 39 deletions(-)

diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
index 878b307..df42a71 100644
--- a/arch/x86/include/asm/iommu.h
+++ b/arch/x86/include/asm/iommu.h
@@ -2,7 +2,6 @@
 #define _ASM_X86_IOMMU_H
 
 static inline void iommu_shutdown_noop(void) {}
-extern void no_iommu_init(void);
 extern struct dma_map_ops nommu_dma_ops;
 extern int force_iommu, no_iommu;
 extern int iommu_detected;
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 0285521..66237fd 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -2110,8 +2110,8 @@ int __init amd_iommu_init_dma_ops(void)
 		prealloc_protection_domains();
 
 	iommu_detected = 1;
-	force_iommu = 1;
 	bad_dma_address = 0;
+	swiotlb = 0;
 #ifdef CONFIG_GART_IOMMU
 	gart_iommu_aperture_disabled = 1;
 	gart_iommu_aperture = 0;
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c41aabd..0d4581e 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1330,7 +1330,7 @@ static int __init early_amd_iommu_detect(struct acpi_table_header *table)
 
 void __init amd_iommu_detect(void)
 {
-	if (swiotlb || no_iommu || (iommu_detected && !gart_iommu_aperture))
+	if (no_iommu || (iommu_detected && !gart_iommu_aperture))
 		return;
 
 	if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) {
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 03933cf..e0dfb68 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -458,7 +458,7 @@ out:
 
 	if (aper_alloc) {
 		/* Got the aperture from the AGP bridge */
-	} else if (swiotlb && !valid_agp) {
+	} else if (!valid_agp) {
 		/* Do nothing */
 	} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
 		   force_iommu ||
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 47bd419..833f491 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1360,7 +1360,7 @@ void __init detect_calgary(void)
 	 * if the user specified iommu=off or iommu=soft or we found
 	 * another HW IOMMU already, bail out.
 	 */
-	if (swiotlb || no_iommu || iommu_detected)
+	if (no_iommu || iommu_detected)
 		return;
 
 	if (!use_calgary)
@@ -1445,10 +1445,6 @@ void __init detect_calgary(void)
 		printk(KERN_INFO "PCI-DMA: Calgary TCE table spec is %d\n",
 		       specified_table_size);
 
-		/* swiotlb for devices that aren't behind the Calgary. */
-		if (max_pfn > MAX_DMA32_PFN)
-			swiotlb = 1;
-
 		x86_init.iommu.iommu_init = calgary_iommu_init;
 	}
 	return;
@@ -1476,11 +1472,7 @@ int __init calgary_iommu_init(void)
 		return ret;
 	}
 
-	force_iommu = 1;
 	bad_dma_address = 0x0;
-	/* dma_ops is set to swiotlb or nommu */
-	if (!dma_ops)
-		dma_ops = &nommu_dma_ops;
 
 	return 0;
 }
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index bed05e2..a234e63 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -124,24 +124,24 @@ static void __init dma32_free_bootmem(void)
 
 void __init pci_iommu_alloc(void)
 {
+	/* swiotlb is forced by the boot option */
+	int use_swiotlb = swiotlb;
 #ifdef CONFIG_X86_64
 	/* free the range so iommu could get some range less than 4G */
 	dma32_free_bootmem();
 #endif
+	pci_swiotlb_init();
+	if (use_swiotlb)
+		return;
 
-	/*
-	 * The order of these functions is important for
-	 * fall-back/fail-over reasons
-	 */
 	gart_iommu_hole_init();
 
 	detect_calgary();
 
 	detect_intel_iommu();
 
+	/* needs to be called after gart_iommu_hole_init */
 	amd_iommu_detect();
-
-	pci_swiotlb_init();
 }
 
 void *dma_generic_alloc_coherent(struct device *dev, size_t size,
@@ -291,10 +291,15 @@ static int __init pci_iommu_init(void)
 #ifdef CONFIG_PCI
 	dma_debug_add_bus(&pci_bus_type);
 #endif
-
 	x86_init.iommu.iommu_init();
 
-	no_iommu_init();
+	if (swiotlb) {
+		printk(KERN_INFO "PCI-DMA: "
+		       "Using software bounce buffering for IO (SWIOTLB)\n");
+		swiotlb_print_info();
+	} else
+		swiotlb_free();
+
 	return 0;
 }
 /* Must execute after PCI subsystem */
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 0410bd3..919182e 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -833,6 +833,7 @@ int __init gart_iommu_init(void)
 	flush_gart();
 	dma_ops = &gart_dma_ops;
 	x86_platform.iommu_shutdown = gart_iommu_shutdown;
+	swiotlb = 0;
 
 	return 0;
 }
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index a3933d4..875e382 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -103,12 +103,3 @@ struct dma_map_ops nommu_dma_ops = {
 	.sync_sg_for_device	= nommu_sync_sg_for_device,
 	.is_phys		= 1,
 };
-
-void __init no_iommu_init(void)
-{
-	if (dma_ops)
-		return;
-
-	force_iommu = 0; /* no HW IOMMU */
-	dma_ops = &nommu_dma_ops;
-}
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index ea20ef7..17ce422 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -46,13 +46,12 @@ void __init pci_swiotlb_init(void)
 {
 	/* don't initialize swiotlb if iommu=off (no_iommu=1) */
 #ifdef CONFIG_X86_64
-	if ((!iommu_detected && !no_iommu && max_pfn > MAX_DMA32_PFN))
+	if (!no_iommu && max_pfn > MAX_DMA32_PFN)
 		swiotlb = 1;
 #endif
-	if (swiotlb_force)
-		swiotlb = 1;
 	if (swiotlb) {
 		swiotlb_init(0);
 		dma_ops = &swiotlb_dma_ops;
-	}
+	} else
+		dma_ops = &nommu_dma_ops;
 }
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index bce9cd7..4373996 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -613,8 +613,7 @@ void __init detect_intel_iommu(void)
 			       "x2apic and Intr-remapping.\n");
 #endif
 #ifdef CONFIG_DMAR
-		if (ret && !no_iommu && !iommu_detected && !swiotlb &&
-		    !dmar_disabled)
+		if (ret && !no_iommu && !iommu_detected && !dmar_disabled)
 			iommu_detected = 1;
 #endif
 #ifdef CONFIG_X86
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index b1e97e6..43d755a 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3231,7 +3231,7 @@ int __init intel_iommu_init(void)
 	 * Check the need for DMA-remapping initialization now.
 	 * Above initialization will also be used by Interrupt-remapping.
 	 */
-	if (no_iommu || swiotlb || dmar_disabled)
+	if (no_iommu || dmar_disabled)
 		return -ENODEV;
 
 	iommu_init_mempool();
@@ -3252,7 +3252,9 @@ int __init intel_iommu_init(void)
 	"PCI-DMA: Intel(R) Virtualization Technology for Directed I/O\n");
 
 	init_timer(&unmap_timer);
-	force_iommu = 1;
+#ifdef CONFIG_SWIOTLB
+	swiotlb = 0;
+#endif
 	dma_ops = &intel_dma_ops;
 
 	init_iommu_sysfs();
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 0c12d7c..e6755a0 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -109,8 +109,10 @@ setup_io_tlb_npages(char *str)
 	}
 	if (*str == ',')
 		++str;
-	if (!strcmp(str, "force"))
+	if (!strcmp(str, "force")) {
 		swiotlb_force = 1;
+		swiotlb = 1;
+	}
 	return 1;
 }
 __setup("swiotlb=", setup_io_tlb_npages);

[PATCH] x86: fix gart iommu using for amd 64 bit system

[Yinghai Lu]

after
|commit 75f1cdf1dda92cae037ec848ae63690d91913eac
|Author: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
|Date:   Tue Nov 10 19:46:20 2009 +0900
|
|    x86: Handle HW IOMMU initialization failure gracefully
|    
|    If HW IOMMU initialization fails (Intel VT-d often does this,
|    typically due to BIOS bugs), we fall back to nommu. It doesn't
|    work for the majority since nowadays we have more than 4GB
|    memory so we must use swiotlb instead of nommu.
...

amd 64 systems that
1. do not have  AGP
2. do not have IOMMU
3. mem > 4g
4. BIOS do not allocate  correct gart in NB.
will leave them to use SWIOTLB forcely.

also in pci_iommu_alloc()
pci_swiotlb_init is stealing the preallocate range that is for
gart_iommu_hole workaround.

so restore the sequence...

will get back
[    0.000000] Your BIOS doesn't leave a aperture memory hole
[    0.000000] Please enable the IOMMU option in the BIOS setup
[    0.000000] This costs you 64 MB of RAM
[    0.000000] Mapping aperture over 65536 KB of RAM @ 20000000

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 arch/x86/kernel/aperture_64.c |    2 +-
 arch/x86/kernel/pci-dma.c     |    5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

Index: linux-2.6/arch/x86/kernel/aperture_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/aperture_64.c
+++ linux-2.6/arch/x86/kernel/aperture_64.c
@@ -458,7 +458,7 @@ out:
 
 	if (aper_alloc) {
 		/* Got the aperture from the AGP bridge */
-	} else if (!valid_agp) {
+	} else if (swiotlb && !valid_agp) {
 		/* Do nothing */
 	} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
 		   force_iommu ||
Index: linux-2.6/arch/x86/kernel/pci-dma.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/pci-dma.c
+++ linux-2.6/arch/x86/kernel/pci-dma.c
@@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
 	/* free the range so iommu could get some range less than 4G */
 	dma32_free_bootmem();
 #endif
+	if (!swiotlb_force)
+		gart_iommu_hole_init();
+
 	if (pci_swiotlb_init())
 		return;
 
-	gart_iommu_hole_init();
-
 	detect_calgary();
 
 	detect_intel_iommu();

[PATCH] x86: fix gart iommu using for amd 64 bit system -v2

[Yinghai Lu]

after
|commit 75f1cdf1dda92cae037ec848ae63690d91913eac
|Author: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
|Date:   Tue Nov 10 19:46:20 2009 +0900
|
|    x86: Handle HW IOMMU initialization failure gracefully
|    
|    If HW IOMMU initialization fails (Intel VT-d often does this,
|    typically due to BIOS bugs), we fall back to nommu. It doesn't
|    work for the majority since nowadays we have more than 4GB
|    memory so we must use swiotlb instead of nommu.
...

amd 64 systems that
1. do not have  AGP
2. do not have IOMMU
3. mem > 4g
4. BIOS do not allocate  correct gart in NB.
will leave them to use SWIOTLB forcely.

also in pci_iommu_alloc()
pci_swiotlb_init is stealing the preallocate range that is for
gart_iommu_hole workaround.

so restore the sequence...

will get back
[    0.000000] Your BIOS doesn't leave a aperture memory hole
[    0.000000] Please enable the IOMMU option in the BIOS setup
[    0.000000] This costs you 64 MB of RAM
[    0.000000] Mapping aperture over 65536 KB of RAM @ 20000000
...
[   12.702822] calling  pci_iommu_init+0x0/0x31 @ 1
[   12.708728] PCI-DMA: Disabling AGP.
[   12.712812] PCI-DMA: aperture base @ 20000000 size 65536 KB
[   12.718384] PCI-DMA: using GART IOMMU.
[   12.722139] PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture
[   12.736944] initcall pci_iommu_init+0x0/0x31 returned 0 after 28802 usecs

-v2: call shutdown when no agp is there

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 arch/x86/kernel/aperture_64.c |    2 +-
 arch/x86/kernel/pci-dma.c     |    5 +++--
 arch/x86/kernel/pci-gart_64.c |    3 ++-
 3 files changed, 6 insertions(+), 4 deletions(-)

Index: linux-2.6/arch/x86/kernel/aperture_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/aperture_64.c
+++ linux-2.6/arch/x86/kernel/aperture_64.c
@@ -458,7 +458,7 @@ out:
 
 	if (aper_alloc) {
 		/* Got the aperture from the AGP bridge */
-	} else if (!valid_agp) {
+	} else if (swiotlb && !valid_agp) {
 		/* Do nothing */
 	} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
 		   force_iommu ||
Index: linux-2.6/arch/x86/kernel/pci-dma.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/pci-dma.c
+++ linux-2.6/arch/x86/kernel/pci-dma.c
@@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
 	/* free the range so iommu could get some range less than 4G */
 	dma32_free_bootmem();
 #endif
+	if (!swiotlb_force)
+		gart_iommu_hole_init();
+
 	if (pci_swiotlb_init())
 		return;
 
-	gart_iommu_hole_init();
-
 	detect_calgary();
 
 	detect_intel_iommu();
Index: linux-2.6/arch/x86/kernel/pci-gart_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/pci-gart_64.c
+++ linux-2.6/arch/x86/kernel/pci-gart_64.c
@@ -710,7 +710,8 @@ static void gart_iommu_shutdown(void)
 	struct pci_dev *dev;
 	int i;
 
-	if (no_agp)
+	/* don't shutdown it if there is AGP installed */
+	if (!no_agp)
 		return;
 
 	for (i = 0; i < num_k8_northbridges; i++) {

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[FUJITA Tomonori]

On Sat, 21 Nov 2009 20:24:52 -0800
Yinghai Lu <yinghai@kernel.org> wrote:

> amd 64 systems that
> 1. do not have  AGP
> 2. do not have IOMMU
> 3. mem > 4g
> 4. BIOS do not allocate  correct gart in NB.
> will leave them to use SWIOTLB forcely.

Sorry, I forgot about this GART workaround.


> Index: linux-2.6/arch/x86/kernel/pci-dma.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/pci-dma.c
> +++ linux-2.6/arch/x86/kernel/pci-dma.c
> @@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
>  	/* free the range so iommu could get some range less than 4G */
>  	dma32_free_bootmem();
>  #endif
> +	if (!swiotlb_force)
> +		gart_iommu_hole_init();
> +
>  	if (pci_swiotlb_init())
>  		return;
>  
> -	gart_iommu_hole_init();
> -
>  	detect_calgary();
>  
>  	detect_intel_iommu();

I prefer to detect all the IOMMU drivers in a consistent way;
detecting only GART before swioltb doesn't look nice.

As we did before, we could detect all the IOMMU driver before
swiotlb. However, I think that it's better to simply change
pci_swiotlb_init() not to steal the preallocate GART workaround memory.

btw, initializing swiotlb before IOMMU detection is useful to GART
too? If GART can't allocate the workaround memory, then the kernel
panic now. We can use swiotlb instead in that case?

=
From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Subject: [PATCH] x86: stop swiotlb stealing the GART workaround memory

swiotlb wrongly uses the GART workaround memory (for bad BIOS) that
dma32_reserv_bootmem allocates. We need to initialize swiotlb before
dma32_free_bootmem().

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 arch/x86/kernel/pci-dma.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index afcc58b..26fe2cd 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -120,11 +120,15 @@ static void __init dma32_free_bootmem(void)
 
 void __init pci_iommu_alloc(void)
 {
+	int use_swiotlb;
+
+	use_swiotlb = pci_swiotlb_init();
+
 #ifdef CONFIG_X86_64
 	/* free the range so iommu could get some range less than 4G */
 	dma32_free_bootmem();
 #endif
-	if (pci_swiotlb_init())
+	if (use_swiotlb)
 		return;
 
 	gart_iommu_hole_init();
-- 
1.5.6.5

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[Yinghai Lu]

FUJITA Tomonori wrote:
> On Sat, 21 Nov 2009 20:24:52 -0800
> Yinghai Lu <yinghai@kernel.org> wrote:
> 
>> amd 64 systems that
>> 1. do not have  AGP
>> 2. do not have IOMMU
>> 3. mem > 4g
>> 4. BIOS do not allocate  correct gart in NB.
>> will leave them to use SWIOTLB forcely.
> 
> Sorry, I forgot about this GART workaround.
> 
> 
>> Index: linux-2.6/arch/x86/kernel/pci-dma.c
>> ===================================================================
>> --- linux-2.6.orig/arch/x86/kernel/pci-dma.c
>> +++ linux-2.6/arch/x86/kernel/pci-dma.c
>> @@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
>>  	/* free the range so iommu could get some range less than 4G */
>>  	dma32_free_bootmem();
>>  #endif
>> +	if (!swiotlb_force)
>> +		gart_iommu_hole_init();
>> +
>>  	if (pci_swiotlb_init())
>>  		return;
>>  
>> -	gart_iommu_hole_init();
>> -
>>  	detect_calgary();
>>  
>>  	detect_intel_iommu();
> 
> I prefer to detect all the IOMMU drivers in a consistent way;
> detecting only GART before swioltb doesn't look nice.
> 
> As we did before, we could detect all the IOMMU driver before
> swiotlb. However, I think that it's better to simply change
> pci_swiotlb_init() not to steal the preallocate GART workaround memory.
> 
> btw, initializing swiotlb before IOMMU detection is useful to GART
> too? If GART can't allocate the workaround memory, then the kernel
> panic now. We can use swiotlb instead in that case?
> 
> =
> From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> Subject: [PATCH] x86: stop swiotlb stealing the GART workaround memory
> 
> swiotlb wrongly uses the GART workaround memory (for bad BIOS) that
> dma32_reserv_bootmem allocates. We need to initialize swiotlb before
> dma32_free_bootmem().
> 
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> ---
>  arch/x86/kernel/pci-dma.c |    6 +++++-
>  1 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
> index afcc58b..26fe2cd 100644
> --- a/arch/x86/kernel/pci-dma.c
> +++ b/arch/x86/kernel/pci-dma.c
> @@ -120,11 +120,15 @@ static void __init dma32_free_bootmem(void)
>  
>  void __init pci_iommu_alloc(void)
>  {
> +	int use_swiotlb;
> +
> +	use_swiotlb = pci_swiotlb_init();
> +
>  #ifdef CONFIG_X86_64
>  	/* free the range so iommu could get some range less than 4G */
>  	dma32_free_bootmem();
>  #endif
> -	if (pci_swiotlb_init())
> +	if (use_swiotlb)
>  		return;
>  
>  	gart_iommu_hole_init();

pci_swiotlb_init need be called after dma32_free_bootmem
otherwise it could fail for system with lots of memory and numa=off

so dma32_free_bootmem will work for gart_iommu_hole_init and pci_swiotlb_init..
make sure they can get RAM < 4g.

also in gart_iommu_hole_init we need check swiotlb and !valid_agp...
-       } else if (!valid_agp) {
+       } else if (swiotlb && !valid_agp) {

otherwise the the workaround will be skipped...

YH

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[FUJITA Tomonori]

On Tue, 24 Nov 2009 01:19:21 -0800
Yinghai Lu <yinghai@kernel.org> wrote:

> FUJITA Tomonori wrote:
> > On Sat, 21 Nov 2009 20:24:52 -0800
> > Yinghai Lu <yinghai@kernel.org> wrote:
> > 
> >> amd 64 systems that
> >> 1. do not have  AGP
> >> 2. do not have IOMMU
> >> 3. mem > 4g
> >> 4. BIOS do not allocate  correct gart in NB.
> >> will leave them to use SWIOTLB forcely.
> > 
> > Sorry, I forgot about this GART workaround.
> > 
> > 
> >> Index: linux-2.6/arch/x86/kernel/pci-dma.c
> >> ===================================================================
> >> --- linux-2.6.orig/arch/x86/kernel/pci-dma.c
> >> +++ linux-2.6/arch/x86/kernel/pci-dma.c
> >> @@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
> >>  	/* free the range so iommu could get some range less than 4G */
> >>  	dma32_free_bootmem();
> >>  #endif
> >> +	if (!swiotlb_force)
> >> +		gart_iommu_hole_init();
> >> +
> >>  	if (pci_swiotlb_init())
> >>  		return;
> >>  
> >> -	gart_iommu_hole_init();
> >> -
> >>  	detect_calgary();
> >>  
> >>  	detect_intel_iommu();
> > 
> > I prefer to detect all the IOMMU drivers in a consistent way;
> > detecting only GART before swioltb doesn't look nice.
> > 
> > As we did before, we could detect all the IOMMU driver before
> > swiotlb. However, I think that it's better to simply change
> > pci_swiotlb_init() not to steal the preallocate GART workaround memory.
> > 
> > btw, initializing swiotlb before IOMMU detection is useful to GART
> > too? If GART can't allocate the workaround memory, then the kernel
> > panic now. We can use swiotlb instead in that case?
> > 
> > =
> > From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> > Subject: [PATCH] x86: stop swiotlb stealing the GART workaround memory
> > 
> > swiotlb wrongly uses the GART workaround memory (for bad BIOS) that
> > dma32_reserv_bootmem allocates. We need to initialize swiotlb before
> > dma32_free_bootmem().
> > 
> > Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> > ---
> >  arch/x86/kernel/pci-dma.c |    6 +++++-
> >  1 files changed, 5 insertions(+), 1 deletions(-)
> > 
> > diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
> > index afcc58b..26fe2cd 100644
> > --- a/arch/x86/kernel/pci-dma.c
> > +++ b/arch/x86/kernel/pci-dma.c
> > @@ -120,11 +120,15 @@ static void __init dma32_free_bootmem(void)
> >  
> >  void __init pci_iommu_alloc(void)
> >  {
> > +	int use_swiotlb;
> > +
> > +	use_swiotlb = pci_swiotlb_init();
> > +
> >  #ifdef CONFIG_X86_64
> >  	/* free the range so iommu could get some range less than 4G */
> >  	dma32_free_bootmem();
> >  #endif
> > -	if (pci_swiotlb_init())
> > +	if (use_swiotlb)
> >  		return;
> >  
> >  	gart_iommu_hole_init();
> 
> pci_swiotlb_init need be called after dma32_free_bootmem
> otherwise it could fail for system with lots of memory and numa=off

Why? swiotlb needs just 64MB (and some) in DMA32.

swiotlb had been worked fine without that hack until 2.6.26?

Only broken GART needs that hack (and I think that it's better to move
that hack to GART code).


> so dma32_free_bootmem will work for gart_iommu_hole_init and pci_swiotlb_init..
> make sure they can get RAM < 4g.
> 
> also in gart_iommu_hole_init we need check swiotlb and !valid_agp...
> -       } else if (!valid_agp) {
> +       } else if (swiotlb && !valid_agp) {
> 
> otherwise the the workaround will be skipped...
> 
> YH
> --
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Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[Yinghai Lu]

FUJITA Tomonori wrote:
> On Tue, 24 Nov 2009 01:19:21 -0800
> Yinghai Lu <yinghai@kernel.org> wrote:
> 
>> FUJITA Tomonori wrote:
>>> On Sat, 21 Nov 2009 20:24:52 -0800
>>> Yinghai Lu <yinghai@kernel.org> wrote:
>>>
>>>> amd 64 systems that
>>>> 1. do not have  AGP
>>>> 2. do not have IOMMU
>>>> 3. mem > 4g
>>>> 4. BIOS do not allocate  correct gart in NB.
>>>> will leave them to use SWIOTLB forcely.
>>> Sorry, I forgot about this GART workaround.
>>>
>>>
>>>> Index: linux-2.6/arch/x86/kernel/pci-dma.c
>>>> ===================================================================
>>>> --- linux-2.6.orig/arch/x86/kernel/pci-dma.c
>>>> +++ linux-2.6/arch/x86/kernel/pci-dma.c
>>>> @@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
>>>>  	/* free the range so iommu could get some range less than 4G */
>>>>  	dma32_free_bootmem();
>>>>  #endif
>>>> +	if (!swiotlb_force)
>>>> +		gart_iommu_hole_init();
>>>> +
>>>>  	if (pci_swiotlb_init())
>>>>  		return;
>>>>  
>>>> -	gart_iommu_hole_init();
>>>> -
>>>>  	detect_calgary();
>>>>  
>>>>  	detect_intel_iommu();
>>> I prefer to detect all the IOMMU drivers in a consistent way;
>>> detecting only GART before swioltb doesn't look nice.
>>>
>>> As we did before, we could detect all the IOMMU driver before
>>> swiotlb. However, I think that it's better to simply change
>>> pci_swiotlb_init() not to steal the preallocate GART workaround memory.
>>>
>>> btw, initializing swiotlb before IOMMU detection is useful to GART
>>> too? If GART can't allocate the workaround memory, then the kernel
>>> panic now. We can use swiotlb instead in that case?
>>>
>>> =
>>> From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
>>> Subject: [PATCH] x86: stop swiotlb stealing the GART workaround memory
>>>
>>> swiotlb wrongly uses the GART workaround memory (for bad BIOS) that
>>> dma32_reserv_bootmem allocates. We need to initialize swiotlb before
>>> dma32_free_bootmem().
>>>
>>> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
>>> ---
>>>  arch/x86/kernel/pci-dma.c |    6 +++++-
>>>  1 files changed, 5 insertions(+), 1 deletions(-)
>>>
>>> diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
>>> index afcc58b..26fe2cd 100644
>>> --- a/arch/x86/kernel/pci-dma.c
>>> +++ b/arch/x86/kernel/pci-dma.c
>>> @@ -120,11 +120,15 @@ static void __init dma32_free_bootmem(void)
>>>  
>>>  void __init pci_iommu_alloc(void)
>>>  {
>>> +	int use_swiotlb;
>>> +
>>> +	use_swiotlb = pci_swiotlb_init();
>>> +
>>>  #ifdef CONFIG_X86_64
>>>  	/* free the range so iommu could get some range less than 4G */
>>>  	dma32_free_bootmem();
>>>  #endif
>>> -	if (pci_swiotlb_init())
>>> +	if (use_swiotlb)
>>>  		return;
>>>  
>>>  	gart_iommu_hole_init();
>> pci_swiotlb_init need be called after dma32_free_bootmem
>> otherwise it could fail for system with lots of memory and numa=off
> 
> Why? swiotlb needs just 64MB (and some) in DMA32.
> 
> swiotlb had been worked fine without that hack until 2.6.26?
> 
> Only broken GART needs that hack (and I think that it's better to move
> that hack to GART code).

gart iommu workaround will allocate 64M by default.

fail config: like system with 512g and sparse mem, and vmmap.

YH

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[FUJITA Tomonori]

On Tue, 24 Nov 2009 01:48:54 -0800
Yinghai Lu <yinghai@kernel.org> wrote:

> FUJITA Tomonori wrote:
> > On Tue, 24 Nov 2009 01:19:21 -0800
> > Yinghai Lu <yinghai@kernel.org> wrote:
> > 
> >> FUJITA Tomonori wrote:
> >>> On Sat, 21 Nov 2009 20:24:52 -0800
> >>> Yinghai Lu <yinghai@kernel.org> wrote:
> >>>
> >>>> amd 64 systems that
> >>>> 1. do not have  AGP
> >>>> 2. do not have IOMMU
> >>>> 3. mem > 4g
> >>>> 4. BIOS do not allocate  correct gart in NB.
> >>>> will leave them to use SWIOTLB forcely.
> >>> Sorry, I forgot about this GART workaround.
> >>>
> >>>
> >>>> Index: linux-2.6/arch/x86/kernel/pci-dma.c
> >>>> ===================================================================
> >>>> --- linux-2.6.orig/arch/x86/kernel/pci-dma.c
> >>>> +++ linux-2.6/arch/x86/kernel/pci-dma.c
> >>>> @@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
> >>>>  	/* free the range so iommu could get some range less than 4G */
> >>>>  	dma32_free_bootmem();
> >>>>  #endif
> >>>> +	if (!swiotlb_force)
> >>>> +		gart_iommu_hole_init();
> >>>> +
> >>>>  	if (pci_swiotlb_init())
> >>>>  		return;
> >>>>  
> >>>> -	gart_iommu_hole_init();
> >>>> -
> >>>>  	detect_calgary();
> >>>>  
> >>>>  	detect_intel_iommu();
> >>> I prefer to detect all the IOMMU drivers in a consistent way;
> >>> detecting only GART before swioltb doesn't look nice.
> >>>
> >>> As we did before, we could detect all the IOMMU driver before
> >>> swiotlb. However, I think that it's better to simply change
> >>> pci_swiotlb_init() not to steal the preallocate GART workaround memory.
> >>>
> >>> btw, initializing swiotlb before IOMMU detection is useful to GART
> >>> too? If GART can't allocate the workaround memory, then the kernel
> >>> panic now. We can use swiotlb instead in that case?
> >>>
> >>> =
> >>> From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> >>> Subject: [PATCH] x86: stop swiotlb stealing the GART workaround memory
> >>>
> >>> swiotlb wrongly uses the GART workaround memory (for bad BIOS) that
> >>> dma32_reserv_bootmem allocates. We need to initialize swiotlb before
> >>> dma32_free_bootmem().
> >>>
> >>> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> >>> ---
> >>>  arch/x86/kernel/pci-dma.c |    6 +++++-
> >>>  1 files changed, 5 insertions(+), 1 deletions(-)
> >>>
> >>> diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
> >>> index afcc58b..26fe2cd 100644
> >>> --- a/arch/x86/kernel/pci-dma.c
> >>> +++ b/arch/x86/kernel/pci-dma.c
> >>> @@ -120,11 +120,15 @@ static void __init dma32_free_bootmem(void)
> >>>  
> >>>  void __init pci_iommu_alloc(void)
> >>>  {
> >>> +	int use_swiotlb;
> >>> +
> >>> +	use_swiotlb = pci_swiotlb_init();
> >>> +
> >>>  #ifdef CONFIG_X86_64
> >>>  	/* free the range so iommu could get some range less than 4G */
> >>>  	dma32_free_bootmem();
> >>>  #endif
> >>> -	if (pci_swiotlb_init())
> >>> +	if (use_swiotlb)
> >>>  		return;
> >>>  
> >>>  	gart_iommu_hole_init();
> >> pci_swiotlb_init need be called after dma32_free_bootmem
> >> otherwise it could fail for system with lots of memory and numa=off
> > 
> > Why? swiotlb needs just 64MB (and some) in DMA32.
> > 
> > swiotlb had been worked fine without that hack until 2.6.26?
> > 
> > Only broken GART needs that hack (and I think that it's better to move
> > that hack to GART code).
> 
> gart iommu workaround will allocate 64M by default.
> 
> fail config: like system with 512g and sparse mem, and vmmap.

Well, some systems could fail but they can use swiotlb. If users
configures their systems not to use swioltb by boot option, it's fair
that systems don't work.

We are talking about a rare broken GART BIOS issue. I think that it's
much better to remove this hack completely. As VT-d does, we can use
swiotlb instead of this GART specific hack. I think that that's saner
approach to handle broken IOMMU hardware.

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[Yinghai Lu]

FUJITA Tomonori wrote:
> On Tue, 24 Nov 2009 01:48:54 -0800
> Yinghai Lu <yinghai@kernel.org> wrote:
> 
>> FUJITA Tomonori wrote:
>>> On Tue, 24 Nov 2009 01:19:21 -0800
>>> Yinghai Lu <yinghai@kernel.org> wrote:
>>>
>>>> FUJITA Tomonori wrote:
>>>>> On Sat, 21 Nov 2009 20:24:52 -0800
>>>>> Yinghai Lu <yinghai@kernel.org> wrote:
>>>>>
>>>>>> amd 64 systems that
>>>>>> 1. do not have  AGP
>>>>>> 2. do not have IOMMU
>>>>>> 3. mem > 4g
>>>>>> 4. BIOS do not allocate  correct gart in NB.
>>>>>> will leave them to use SWIOTLB forcely.
>>>>> Sorry, I forgot about this GART workaround.
>>>>>
>>>>>
>>>>>> Index: linux-2.6/arch/x86/kernel/pci-dma.c
>>>>>> ===================================================================
>>>>>> --- linux-2.6.orig/arch/x86/kernel/pci-dma.c
>>>>>> +++ linux-2.6/arch/x86/kernel/pci-dma.c
>>>>>> @@ -124,11 +124,12 @@ void __init pci_iommu_alloc(void)
>>>>>>  	/* free the range so iommu could get some range less than 4G */
>>>>>>  	dma32_free_bootmem();
>>>>>>  #endif
>>>>>> +	if (!swiotlb_force)
>>>>>> +		gart_iommu_hole_init();
>>>>>> +
>>>>>>  	if (pci_swiotlb_init())
>>>>>>  		return;
>>>>>>  
>>>>>> -	gart_iommu_hole_init();
>>>>>> -
>>>>>>  	detect_calgary();
>>>>>>  
>>>>>>  	detect_intel_iommu();
>>>>> I prefer to detect all the IOMMU drivers in a consistent way;
>>>>> detecting only GART before swioltb doesn't look nice.
>>>>>
>>>>> As we did before, we could detect all the IOMMU driver before
>>>>> swiotlb. However, I think that it's better to simply change
>>>>> pci_swiotlb_init() not to steal the preallocate GART workaround memory.
>>>>>
>>>>> btw, initializing swiotlb before IOMMU detection is useful to GART
>>>>> too? If GART can't allocate the workaround memory, then the kernel
>>>>> panic now. We can use swiotlb instead in that case?
>>>>>
>>>>> =
>>>>> From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
>>>>> Subject: [PATCH] x86: stop swiotlb stealing the GART workaround memory
>>>>>
>>>>> swiotlb wrongly uses the GART workaround memory (for bad BIOS) that
>>>>> dma32_reserv_bootmem allocates. We need to initialize swiotlb before
>>>>> dma32_free_bootmem().
>>>>>
>>>>> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
>>>>> ---
>>>>>  arch/x86/kernel/pci-dma.c |    6 +++++-
>>>>>  1 files changed, 5 insertions(+), 1 deletions(-)
>>>>>
>>>>> diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
>>>>> index afcc58b..26fe2cd 100644
>>>>> --- a/arch/x86/kernel/pci-dma.c
>>>>> +++ b/arch/x86/kernel/pci-dma.c
>>>>> @@ -120,11 +120,15 @@ static void __init dma32_free_bootmem(void)
>>>>>  
>>>>>  void __init pci_iommu_alloc(void)
>>>>>  {
>>>>> +	int use_swiotlb;
>>>>> +
>>>>> +	use_swiotlb = pci_swiotlb_init();
>>>>> +
>>>>>  #ifdef CONFIG_X86_64
>>>>>  	/* free the range so iommu could get some range less than 4G */
>>>>>  	dma32_free_bootmem();
>>>>>  #endif
>>>>> -	if (pci_swiotlb_init())
>>>>> +	if (use_swiotlb)
>>>>>  		return;
>>>>>  
>>>>>  	gart_iommu_hole_init();
>>>> pci_swiotlb_init need be called after dma32_free_bootmem
>>>> otherwise it could fail for system with lots of memory and numa=off
>>> Why? swiotlb needs just 64MB (and some) in DMA32.
>>>
>>> swiotlb had been worked fine without that hack until 2.6.26?
>>>
>>> Only broken GART needs that hack (and I think that it's better to move
>>> that hack to GART code).
>> gart iommu workaround will allocate 64M by default.
>>
>> fail config: like system with 512g and sparse mem, and vmmap.
> 
> Well, some systems could fail but they can use swiotlb. If users
> configures their systems not to use swioltb by boot option, it's fair
> that systems don't work.
i mean when 512g and numa = off, even swiotlb could have chance not to get that 64M ram
> 
> We are talking about a rare broken GART BIOS issue. I think that it's
> much better to remove this hack completely. As VT-d does, we can use
> swiotlb instead of this GART specific hack. I think that that's saner
> approach to handle broken IOMMU hardware.

your second patch could break swiotlb...

at GART iommu workaround : it is not rare. a lot of systems have this problem.
and that workaround works well for several years.
don't think user will like to use SWIOTLB instead of swiotlb.

that gart iommu hardware is not broken, just those BIOS guys just forget to program it.

here intel vt-d is different, it seems can not make it work just program some hardware register...

please check my v2 patch, to see if it breaks your setup.

YH

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[FUJITA Tomonori]

On Tue, 24 Nov 2009 02:42:26 -0800
Yinghai Lu <yinghai@kernel.org> wrote:

> at GART iommu workaround : it is not rare. a lot of systems have this problem.
> and that workaround works well for several years.

swiotlb has worked too.


> don't think user will like to use SWIOTLB instead of swiotlb.

I doubt that users care about a way to fix their problems.


> that gart iommu hardware is not broken, just those BIOS guys just forget to program it.
> 
> here intel vt-d is different, it seems can not make it work just program some hardware register...

Because BIOS is broken, IIRC. Both cases are pretty similar.

> please check my v2 patch, to see if it breaks your setup.

As I said, adding another trick only for GART is not good. And using
force_iommu in pci-dma.c is confusing since force_iommu should be used
only in X86_64.

The following patch works for you?


diff --git a/arch/x86/include/asm/swiotlb.h b/arch/x86/include/asm/swiotlb.h
index 87ffcb1..8085277 100644
--- a/arch/x86/include/asm/swiotlb.h
+++ b/arch/x86/include/asm/swiotlb.h
@@ -5,13 +5,17 @@
 
 #ifdef CONFIG_SWIOTLB
 extern int swiotlb;
-extern int pci_swiotlb_init(void);
+extern int __init pci_swiotlb_detect(void);
+extern void __init pci_swiotlb_init(void);
 #else
 #define swiotlb 0
-static inline int pci_swiotlb_init(void)
+static inline int pci_swiotlb_detect(void)
 {
 	return 0;
 }
+static inline void pci_swiotlb_init(void)
+{
+}
 #endif
 
 static inline void dma_mark_clean(void *addr, size_t size) {}
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index e0dfb68..750dd8d 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -401,6 +401,7 @@ void __init gart_iommu_hole_init(void)
 
 			iommu_detected = 1;
 			gart_iommu_aperture = 1;
+			swiotlb = 0;
 			x86_init.iommu.iommu_init = gart_iommu_init;
 
 			aper_order = (read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL) >> 1) & 7;
@@ -458,7 +459,7 @@ out:
 
 	if (aper_alloc) {
 		/* Got the aperture from the AGP bridge */
-	} else if (!valid_agp) {
+	} else if (swiotlb && !valid_agp) {
 		/* Do nothing */
 	} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
 		   force_iommu ||
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index afcc58b..75e14e2 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -124,8 +124,8 @@ void __init pci_iommu_alloc(void)
 	/* free the range so iommu could get some range less than 4G */
 	dma32_free_bootmem();
 #endif
-	if (pci_swiotlb_init())
-		return;
+	if (pci_swiotlb_detect())
+		goto out;
 
 	gart_iommu_hole_init();
 
@@ -135,6 +135,8 @@ void __init pci_iommu_alloc(void)
 
 	/* needs to be called after gart_iommu_hole_init */
 	amd_iommu_detect();
+out:
+	pci_swiotlb_init();
 }
 
 void *dma_generic_alloc_coherent(struct device *dev, size_t size,
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index e6a0d40..2358409 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -847,7 +847,6 @@ int __init gart_iommu_init(void)
 	flush_gart();
 	dma_ops = &gart_dma_ops;
 	x86_platform.iommu_shutdown = gart_iommu_shutdown;
-	swiotlb = 0;
 
 	return 0;
 }
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index e36e71d..6971ba5 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -43,12 +43,12 @@ static struct dma_map_ops swiotlb_dma_ops = {
 };
 
 /*
- * pci_swiotlb_init - initialize swiotlb if necessary
+ * pci_swiotlb_init - set swiotlb to 1 if necessary
  *
  * This returns non-zero if we are forced to use swiotlb (by the boot
  * option).
  */
-int __init pci_swiotlb_init(void)
+int __init pci_swiotlb_detect(void)
 {
 	/* don't initialize swiotlb if iommu=off (no_iommu=1) */
 #ifdef CONFIG_X86_64
@@ -58,10 +58,13 @@ int __init pci_swiotlb_init(void)
 	if (swiotlb_force)
 		swiotlb = 1;
 
+	return swiotlb_force;
+}
+
+void __init pci_swiotlb_init(void)
+{
 	if (swiotlb) {
 		swiotlb_init(0);
 		dma_ops = &swiotlb_dma_ops;
 	}
-
-	return swiotlb_force;
 }

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[Ingo Molnar]

* FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:

> > don't think user will like to use SWIOTLB instead of swiotlb.
> 
> I doubt that users care about a way to fix their problems.

As far as swiotlb vs. GART goes, arguably a non-bouncing hw based 
solution (GART) is superior to a bouncing one (swiotlb), right?

	ngo

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[Yinghai Lu]

Ingo Molnar wrote:
> * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
> 
>>> don't think user will like to use SWIOTLB instead of swiotlb.
>> I doubt that users care about a way to fix their problems.
> 
> As far as swiotlb vs. GART goes, arguably a non-bouncing hw based 
> solution (GART) is superior to a bouncing one (swiotlb), right?
> 

yes, should use GART if possible.

YH

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[FUJITA Tomonori]

On Tue, 24 Nov 2009 16:26:45 +0100
Ingo Molnar <mingo@elte.hu> wrote:

> 
> * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
> 
> > > don't think user will like to use SWIOTLB instead of swiotlb.
> > 
> > I doubt that users care about a way to fix their problems.
> 
> As far as swiotlb vs. GART goes, arguably a non-bouncing hw based 
> solution (GART) is superior to a bouncing one (swiotlb), right?

Yeah, but GART is not a real IOMMU that always does address
translation. If users want performance, they need 64bit DMA capable
devices to skip GART. With such devices, GART and SWIOTLB are same.

So this hacky GART workaround is useful for only people who use non
64bit DMA devices and broken BIOS with GART. IMO, it's not worth
having the workaround.

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[Ingo Molnar]

* FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:

> On Tue, 24 Nov 2009 16:26:45 +0100
> Ingo Molnar <mingo@elte.hu> wrote:
> 
> > 
> > * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
> > 
> > > > don't think user will like to use SWIOTLB instead of swiotlb.
> > > 
> > > I doubt that users care about a way to fix their problems.
> > 
> > As far as swiotlb vs. GART goes, arguably a non-bouncing hw based 
> > solution (GART) is superior to a bouncing one (swiotlb), right?
> 
> Yeah, but GART is not a real IOMMU that always does address 
> translation. If users want performance, they need 64bit DMA capable 
> devices to skip GART. With such devices, GART and SWIOTLB are same.
> 
> So this hacky GART workaround is useful for only people who use non 
> 64bit DMA devices and broken BIOS with GART. IMO, it's not worth 
> having the workaround.

Well, what Yinghai is saying that for that (nonzero) subset of people 
this change is a regression, and his patch fixes that. We dont do 
regressions so this needs to be addressed.

Thanks,

	Ingo

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[FUJITA Tomonori]

On Wed, 25 Nov 2009 08:25:04 +0100
Ingo Molnar <mingo@elte.hu> wrote:

> 
> * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
> 
> > On Tue, 24 Nov 2009 16:26:45 +0100
> > Ingo Molnar <mingo@elte.hu> wrote:
> > 
> > > 
> > > * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
> > > 
> > > > > don't think user will like to use SWIOTLB instead of swiotlb.
> > > > 
> > > > I doubt that users care about a way to fix their problems.
> > > 
> > > As far as swiotlb vs. GART goes, arguably a non-bouncing hw based 
> > > solution (GART) is superior to a bouncing one (swiotlb), right?
> > 
> > Yeah, but GART is not a real IOMMU that always does address 
> > translation. If users want performance, they need 64bit DMA capable 
> > devices to skip GART. With such devices, GART and SWIOTLB are same.
> > 
> > So this hacky GART workaround is useful for only people who use non 
> > 64bit DMA devices and broken BIOS with GART. IMO, it's not worth 
> > having the workaround.
> 
> Well, what Yinghai is saying that for that (nonzero) subset of people 
> this change is a regression, and his patch fixes that. We dont do 
> regressions so this needs to be addressed.

OK, I guess that I have to wait until nobody cares about GART.

Anyway, my patch fixes his issue without any regression:

http://marc.info/?l=linux-kernel&m=125907069703595&w=2

I'll post the second version of it after you merge the following fix:

http://marc.info/?l=linux-kernel&m=125910650500523&w=2


Thanks,

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[Yinghai Lu]

FUJITA Tomonori wrote:
> On Tue, 24 Nov 2009 02:42:26 -0800
> Yinghai Lu <yinghai@kernel.org> wrote:
> 
>> at GART iommu workaround : it is not rare. a lot of systems have this problem.
>> and that workaround works well for several years.
> 
> swiotlb has worked too.
> 
> 
>> don't think user will like to use SWIOTLB instead of swiotlb.
> 
> I doubt that users care about a way to fix their problems.
> 
> 
>> that gart iommu hardware is not broken, just those BIOS guys just forget to program it.
>>
>> here intel vt-d is different, it seems can not make it work just program some hardware register...
> 
> Because BIOS is broken, IIRC. Both cases are pretty similar.
> 
>> please check my v2 patch, to see if it breaks your setup.
> 
> As I said, adding another trick only for GART is not good. And using
> force_iommu in pci-dma.c is confusing since force_iommu should be used
> only in X86_64.
> 
> The following patch works for you?
> 
> 
> diff --git a/arch/x86/include/asm/swiotlb.h b/arch/x86/include/asm/swiotlb.h
> index 87ffcb1..8085277 100644
> --- a/arch/x86/include/asm/swiotlb.h
> +++ b/arch/x86/include/asm/swiotlb.h
> @@ -5,13 +5,17 @@
>  
>  #ifdef CONFIG_SWIOTLB
>  extern int swiotlb;
> -extern int pci_swiotlb_init(void);
> +extern int __init pci_swiotlb_detect(void);
> +extern void __init pci_swiotlb_init(void);
>  #else
>  #define swiotlb 0
> -static inline int pci_swiotlb_init(void)
> +static inline int pci_swiotlb_detect(void)
>  {
>  	return 0;
>  }
> +static inline void pci_swiotlb_init(void)
> +{
> +}
>  #endif
>  
>  static inline void dma_mark_clean(void *addr, size_t size) {}
> diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
> index e0dfb68..750dd8d 100644
> --- a/arch/x86/kernel/aperture_64.c
> +++ b/arch/x86/kernel/aperture_64.c
> @@ -401,6 +401,7 @@ void __init gart_iommu_hole_init(void)
>  
>  			iommu_detected = 1;
>  			gart_iommu_aperture = 1;
> +			swiotlb = 0;
>  			x86_init.iommu.iommu_init = gart_iommu_init;
>  
>  			aper_order = (read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL) >> 1) & 7;
> @@ -458,7 +459,7 @@ out:
>  
>  	if (aper_alloc) {
>  		/* Got the aperture from the AGP bridge */
> -	} else if (!valid_agp) {
> +	} else if (swiotlb && !valid_agp) {
>  		/* Do nothing */

still have some problem here.
because you set swiotlb to 0 before. it will break
iommu=soft

when amd 64bit system, ram > 4g, and no AGP bridge, and BIOS doesn't set gart.
if the user set iommu=soft.
old way, kernel will use swiotlb.

so instead set swiotlb before, it seems you should restore
 			iommu_detected
 			gart_iommu_aperture
			swiotlb = 0;
 			x86_init.iommu.iommu_init
to make swiotlb happy later.

>  	} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
>  		   force_iommu ||
> diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
> index afcc58b..75e14e2 100644
> --- a/arch/x86/kernel/pci-dma.c
> +++ b/arch/x86/kernel/pci-dma.c
> @@ -124,8 +124,8 @@ void __init pci_iommu_alloc(void)
>  	/* free the range so iommu could get some range less than 4G */
>  	dma32_free_bootmem();
>  #endif
> -	if (pci_swiotlb_init())
> -		return;
> +	if (pci_swiotlb_detect())
> +		goto out;
>  
>  	gart_iommu_hole_init();
>  
> @@ -135,6 +135,8 @@ void __init pci_iommu_alloc(void)
>  
>  	/* needs to be called after gart_iommu_hole_init */
>  	amd_iommu_detect();
> +out:
> +	pci_swiotlb_init();
>  }
>  
>  void *dma_generic_alloc_coherent(struct device *dev, size_t size,
> diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
> index e6a0d40..2358409 100644
> --- a/arch/x86/kernel/pci-gart_64.c
> +++ b/arch/x86/kernel/pci-gart_64.c
> @@ -847,7 +847,6 @@ int __init gart_iommu_init(void)
>  	flush_gart();
>  	dma_ops = &gart_dma_ops;
>  	x86_platform.iommu_shutdown = gart_iommu_shutdown;
> -	swiotlb = 0;
>  
>  	return 0;
>  }
> diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
> index e36e71d..6971ba5 100644
> --- a/arch/x86/kernel/pci-swiotlb.c
> +++ b/arch/x86/kernel/pci-swiotlb.c
> @@ -43,12 +43,12 @@ static struct dma_map_ops swiotlb_dma_ops = {
>  };
>  
>  /*
> - * pci_swiotlb_init - initialize swiotlb if necessary
> + * pci_swiotlb_init - set swiotlb to 1 if necessary

pci_swiotlb_detect ?

YH

Re: [PATCH] x86: fix gart iommu using for amd 64 bit system

[FUJITA Tomonori]

On Tue, 24 Nov 2009 10:48:32 -0800
Yinghai Lu <yinghai@kernel.org> wrote:

> >  	if (aper_alloc) {
> >  		/* Got the aperture from the AGP bridge */
> > -	} else if (!valid_agp) {
> > +	} else if (swiotlb && !valid_agp) {
> >  		/* Do nothing */
> 
> still have some problem here.
> because you set swiotlb to 0 before. it will break
> iommu=soft

Oops, thanks. However, it's not GART specific issue.

'iommu=soft' is already broken on all the configurations. It should be
fixed separately. I've just sent a fix.


> >  void *dma_generic_alloc_coherent(struct device *dev, size_t size,
> > diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
> > index e6a0d40..2358409 100644
> > --- a/arch/x86/kernel/pci-gart_64.c
> > +++ b/arch/x86/kernel/pci-gart_64.c
> > @@ -847,7 +847,6 @@ int __init gart_iommu_init(void)
> >  	flush_gart();
> >  	dma_ops = &gart_dma_ops;
> >  	x86_platform.iommu_shutdown = gart_iommu_shutdown;
> > -	swiotlb = 0;
> >  
> >  	return 0;
> >  }
> > diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
> > index e36e71d..6971ba5 100644
> > --- a/arch/x86/kernel/pci-swiotlb.c
> > +++ b/arch/x86/kernel/pci-swiotlb.c
> > @@ -43,12 +43,12 @@ static struct dma_map_ops swiotlb_dma_ops = {
> >  };
> >  
> >  /*
> > - * pci_swiotlb_init - initialize swiotlb if necessary
> > + * pci_swiotlb_init - set swiotlb to 1 if necessary
> 
> pci_swiotlb_detect ?

I'll fix in the next version.

Re: [PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully

[Ingo Molnar]

* FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:

> This patchset is against tip/master.
> 
> The first version is:
> 
> http://marc.info/?l=linux-kernel&m=125671300920411&w=2
> 
> The changes since v1 are:
> 
> - replaced Chris' bootmem patches with the 6/9 patch to implement
>   free_bootmem_late in a simple way (thanks to Pekka).
> 
> - fixed the bug to break 'iommu=soft' boot opiton (found by Joerg).
> 
> - moved iommu_init_noop() to x86_init.c
> 
> - added Muli's Acked-by to Calgary patch.
> 
> 
> ==
>  arch/ia64/kernel/pci-swiotlb.c   |    4 +-
>  arch/powerpc/kernel/setup_32.c   |    2 +-
>  arch/powerpc/kernel/setup_64.c   |    2 +-
>  arch/x86/include/asm/amd_iommu.h |    2 -
>  arch/x86/include/asm/calgary.h   |    2 -
>  arch/x86/include/asm/gart.h      |    5 +---
>  arch/x86/include/asm/iommu.h     |    1 -
>  arch/x86/include/asm/x86_init.h  |    9 +++++++
>  arch/x86/kernel/amd_iommu.c      |    2 +-
>  arch/x86/kernel/amd_iommu_init.c |   19 +++-----------
>  arch/x86/kernel/aperture_64.c    |    4 ++-
>  arch/x86/kernel/pci-calgary_64.c |   19 ++++-----------
>  arch/x86/kernel/pci-dma.c        |   27 ++++++++++-----------
>  arch/x86/kernel/pci-gart_64.c    |   16 ++++-------
>  arch/x86/kernel/pci-nommu.c      |    9 -------
>  arch/x86/kernel/pci-swiotlb.c    |   10 +++----
>  arch/x86/kernel/x86_init.c       |    5 ++++
>  drivers/pci/dmar.c               |    7 ++++-
>  drivers/pci/intel-iommu.c        |    4 +-
>  include/linux/bootmem.h          |    1 +
>  include/linux/dmar.h             |   10 -------
>  include/linux/swiotlb.h          |    5 ++-
>  lib/swiotlb.c                    |   49 +++++++++++++++++++++++++++++++------
>  mm/bootmem.c                     |   24 ++++++++++++++++++
>  24 files changed, 131 insertions(+), 107 deletions(-)

Nice changes! I've applied them to tip:core/iommu (with the small build 
fix i mentioned in the previous mail) and will push them out later 
today.

Thanks,

	Ingo

Re: [PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully

[Ingo Molnar]

[-- Attachment #1: Type: text/plain, Size: 3137 bytes --]


hm, one of the swiotlb patches caused this bootup crash:

[    8.645490] initcall ali_init+0x0/0x40 returned 0 after 61 usecs
[    8.651501] calling  amd_init+0x0/0x16 @ 1
[    8.655620] pata_amd 0000:00:06.0: version 0.4.1
[    8.660286] BUG: unable to handle kernel NULL pointer dereference at 00000034
[    8.663572] IP: [<c100617b>] dma_supported+0x3b/0xa4
[    8.663572] *pde = 00000000 
[    8.663572] Oops: 0000 [#1] SMP 
[    8.663572] last sysfs file: 
[    8.663572] 
[    8.663572] Pid: 1, comm: swapper Not tainted (2.6.32-rc6-tip-02065-gadf90fa-dirty #344) System Product Name
[    8.663572] EIP: 0060:[<c100617b>] EFLAGS: 00010246 CPU: 0
[    8.663572] EIP is at dma_supported+0x3b/0xa4
[    8.663572] EAX: f6ce4058 EBX: 00000000 ECX: 00000000 EDX: ffffffff
[    8.663572] ESI: 00000000 EDI: f6ce4000 EBP: f6cbbe1c ESP: f6cbbe10
[    8.663572]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[    8.663572] Process swapper (pid: 1, ti=f6cba000 task=f6cc0000 task.ti=f6cba000)
[    8.663572] Stack:
[    8.663572]  c158154e f608c000 ffffffff f6cbbe30 c13e1023 f609ab8c f6ce4058 00000000
[    8.663572] <0> f6cbbe60 c1581aa7 00000002 f609ab8c 00000003 00000000 f6ce4000 00000010
[    8.663572] <0> f6ce4000 00000000 f609ab8c f6ce4000 f6cbbe7c c1581c20 f6cbbe8c f6ce4058
[    8.663572] Call Trace:
[    8.663572]  [<c158154e>] ? ata_port_desc+0x4e/0x53
[    8.663572]  [<c13e1023>] ? pci_set_dma_mask+0x23/0x3b
[    8.663572]  [<c1581aa7>] ? ata_pci_bmdma_init+0x32/0x133
[    8.663572]  [<c1581c20>] ? ata_pci_sff_prepare_host+0x78/0xaf
[    8.663572]  [<c1581cd1>] ? ata_pci_sff_init_one+0x7a/0xe7
[    8.663572]  [<c1595897>] ? amd_init_one+0xec/0xf5
[    8.663572]  [<c13e2a24>] ? local_pci_probe+0x13/0x15
[    8.663572]  [<c13e31f0>] ? pci_device_probe+0x48/0x6b
[    8.663572]  [<c1519665>] ? really_probe+0x8e/0x165
[    8.663572]  [<c1519788>] ? driver_probe_device+0x4c/0x82
[    8.663572]  [<c1519806>] ? __driver_attach+0x48/0x64
[    8.663572]  [<c1518ef0>] ? bus_for_each_dev+0x42/0x6c
[    8.663572]  [<c1519491>] ? driver_attach+0x19/0x1b
[    8.663572]  [<c15197be>] ? __driver_attach+0x0/0x64
[    8.663572]  [<c15188b0>] ? bus_add_driver+0xfe/0x23a
[    8.663572]  [<c13ca19f>] ? kset_find_obj+0x23/0x4f
[    8.663572]  [<c1519a6b>] ? driver_register+0x7e/0xe5
[    8.663572]  [<c21e3c31>] ? amd_init+0x0/0x16
[    8.663572]  [<c13e33c7>] ? __pci_register_driver+0x3d/0x9a
[    8.663572]  [<c21e3c31>] ? amd_init+0x0/0x16
[    8.663572]  [<c21e3c45>] ? amd_init+0x14/0x16
[    8.663572]  [<c1001143>] ? do_one_initcall+0x51/0x136
[    8.663572]  [<c21b7324>] ? do_basic_setup+0x47/0x57
[    8.663572]  [<c21b73ae>] ? kernel_init+0x7a/0xbb
[    8.663572]  [<c21b7334>] ? kernel_init+0x0/0xbb
[    8.663572]  [<c1002e97>] ? kernel_thread_helper+0x7/0x10
[    8.663572] Code: 2b c2 83 f9 00 76 24 83 3d f8 38 1b c2 00 7e 1b 8b 58 08 e8 a4 fe 50 00 53 50 68 2e 67 ee c1 e8 16 f9 ad 00 31 db 83 c4 0c eb 62 <8b> 5b 34 85 db 74 06 ff d3 89 c3 eb 55 83 f9 00 77 0a 31 db 81 
[    8.663572] EIP: [<c100617b>] dma_supported+0x3b/0xa4 SS:ESP 0068:f6cbbe10
[    8.663572] CR2: 0000000000000034

config attached.

	Ingo

[-- Attachment #2: config --]
[-- Type: text/plain, Size: 67006 bytes --]

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.32-rc6
# Tue Nov 10 12:33:20 2009
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_GPIO=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
# CONFIG_GENERIC_TIME_VSYSCALL is not set
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_DEFAULT_IDLE=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
# CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ZONE_DMA32 is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_AUDIT_ARCH is not set
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_HAVE_INTEL_TXT=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_USE_GENERIC_SMP_HELPERS=y
CONFIG_X86_32_SMP=y
CONFIG_X86_HT=y
CONFIG_X86_TRAMPOLINE=y
CONFIG_X86_32_LAZY_GS=y
CONFIG_KTIME_SCALAR=y
CONFIG_BOOTPARAM_SUPPORT_NOT_WANTED=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_BOOT_ALLOWED4=y
CONFIG_BROKEN_BOOT_ALLOWED3=y
CONFIG_BROKEN_BOOT_ALLOWED2=y
# CONFIG_BROKEN_BOOT_DISALLOWED is not set
# CONFIG_BROKEN_BOOT_ALLOWED is not set
# CONFIG_BROKEN_BOOT_EUROPE is not set
# CONFIG_BROKEN_BOOT_TITAN is not set
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
CONFIG_KERNEL_LZMA=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
# CONFIG_AUDIT is not set

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_TREE_PREEMPT_RCU is not set
# CONFIG_TINY_RCU is not set
CONFIG_RCU_TRACE=y
CONFIG_RCU_FANOUT=32
CONFIG_RCU_FANOUT_EXACT=y
CONFIG_TREE_RCU_TRACE=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=20
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_GROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_RT_GROUP_SCHED is not set
CONFIG_USER_SCHED=y
# CONFIG_CGROUP_SCHED is not set
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_NS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_CGROUP_CPUACCT=y
# CONFIG_RESOURCE_COUNTERS is not set
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
# CONFIG_EMBEDDED is not set
CONFIG_UID16=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_EXTRA_PASS=y
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_HAVE_PERF_EVENTS=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_EVENT_PROFILE is not set
CONFIG_PERF_COUNTERS=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_PCI_QUIRKS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
CONFIG_OPROFILE=y
CONFIG_OPROFILE_IBS=y
CONFIG_OPROFILE_EVENT_MULTIPLEX=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_HW_BREAKPOINT=y

#
# GCOV-based kernel profiling
#
CONFIG_SLOW_WORK=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
# CONFIG_LBDAF is not set
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_INTEGRITY=y

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_DEFAULT_AS=y
# CONFIG_DEFAULT_DEADLINE is not set
# CONFIG_DEFAULT_CFQ is not set
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="anticipatory"
CONFIG_FREEZER=y

#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
# CONFIG_SMP_SUPPORT is not set
# CONFIG_SPARSE_IRQ is not set
CONFIG_X86_MPPARSE=y
CONFIG_X86_BIGSMP=y
# CONFIG_X86_EXTENDED_PLATFORM is not set
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_PARAVIRT_GUEST is not set
CONFIG_MEMTEST=y
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
CONFIG_M586MMX=y
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
# CONFIG_GENERIC_CPU is not set
# CONFIG_X86_GENERIC is not set
CONFIG_X86_CPU=y
CONFIG_X86_L1_CACHE_BYTES=64
CONFIG_X86_INTERNODE_CACHE_BYTES=64
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=5
CONFIG_X86_XADD=y
CONFIG_X86_PPRO_FENCE=y
CONFIG_X86_F00F_BUG=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_ALIGNMENT_16=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_MINIMUM_CPU_FAMILY=5
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_CYRIX_32=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_TRANSMETA_32=y
CONFIG_CPU_SUP_UMC_32=y
CONFIG_HPET_TIMER=y
CONFIG_DMI=y
# CONFIG_IOMMU_HELPER is not set
CONFIG_IOMMU_API=y
CONFIG_NR_CPUS=32
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
# CONFIG_X86_MCE_AMD is not set
# CONFIG_X86_ANCIENT_MCE is not set
CONFIG_X86_MCE_THRESHOLD=y
# CONFIG_X86_MCE_INJECT is not set
CONFIG_X86_THERMAL_VECTOR=y
CONFIG_VM86=y
CONFIG_I8K=y
CONFIG_X86_REBOOTFIXUPS=y
# CONFIG_MICROCODE is not set
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_X86_CPU_DEBUG=y
CONFIG_UP_WANTED_1=y
# CONFIG_UP_WANTED_2 is not set
CONFIG_SMP=y
# CONFIG_NOHIGHMEM is not set
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_NEED_NODE_MEMMAP_SIZE=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ILLEGAL_POINTER_VALUE=0
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
# CONFIG_DISCONTIGMEM_MANUAL is not set
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_STATIC=y

#
# Memory hotplug is currently incompatible with Software Suspend
#
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_HAVE_MLOCK=y
CONFIG_HAVE_MLOCKED_PAGE_BIT=y
CONFIG_KSM=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
# CONFIG_HIGHPTE is not set
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set
CONFIG_X86_RESERVE_LOW_64K=y
CONFIG_MATH_EMULATION=y
CONFIG_MTRR=y
# CONFIG_MTRR_SANITIZER is not set
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
# CONFIG_EFI is not set
# CONFIG_SECCOMP is not set
# CONFIG_CC_STACKPROTECTOR is not set
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
CONFIG_HZ_300=y
# CONFIG_HZ_1000 is not set
CONFIG_HZ=300
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
# CONFIG_CRASH_DUMP is not set
CONFIG_KEXEC_JUMP=y
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
CONFIG_X86_NEED_RELOCS=y
CONFIG_PHYSICAL_ALIGN=0x1000000
CONFIG_HOTPLUG_CPU=y
# CONFIG_COMPAT_VDSO is not set
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE=""
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management and ACPI options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_SLEEP_SMP=y
CONFIG_PM_SLEEP=y
# CONFIG_SUSPEND is not set
CONFIG_HIBERNATION_NVS=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION=""
CONFIG_PM_RUNTIME=y
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_POWER_METER=y
CONFIG_ACPI_SYSFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
# CONFIG_ACPI_AC is not set
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=y
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_HOTPLUG_CPU=y
CONFIG_ACPI_PROCESSOR_AGGREGATOR=y
CONFIG_ACPI_THERMAL=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
CONFIG_ACPI_DEBUG=y
# CONFIG_ACPI_DEBUG_FUNC_TRACE is not set
CONFIG_ACPI_PCI_SLOT=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
# CONFIG_ACPI_SBS is not set
CONFIG_SFI=y

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GOMMCONFIG is not set
CONFIG_PCI_GODIRECT=y
# CONFIG_PCI_GOOLPC is not set
# CONFIG_PCI_GOANY is not set
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_DOMAINS=y
CONFIG_DMAR=y
# CONFIG_DMAR_DEFAULT_ON is not set
CONFIG_DMAR_FLOPPY_WA=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCIEAER=y
# CONFIG_PCIE_ECRC is not set
CONFIG_PCIEAER_INJECT=y
# CONFIG_PCIEASPM is not set
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_LEGACY=y
CONFIG_PCI_STUB=y
CONFIG_HT_IRQ=y
CONFIG_PCI_IOV=y
CONFIG_ISA_DMA_API=y
CONFIG_ISA=y
CONFIG_EISA=y
CONFIG_EISA_VLB_PRIMING=y
CONFIG_EISA_PCI_EISA=y
CONFIG_EISA_VIRTUAL_ROOT=y
CONFIG_EISA_NAMES=y
CONFIG_MCA=y
# CONFIG_MCA_LEGACY is not set
CONFIG_SCx200=y
# CONFIG_SCx200HR_TIMER is not set
# CONFIG_OLPC is not set
CONFIG_K8_NB=y
CONFIG_PCCARD=y
CONFIG_PCMCIA_DEBUG=y
CONFIG_PCMCIA=y
# CONFIG_PCMCIA_LOAD_CIS is not set
# CONFIG_PCMCIA_IOCTL is not set
CONFIG_CARDBUS=y

#
# PC-card bridges
#
CONFIG_YENTA=y
CONFIG_YENTA_O2=y
CONFIG_YENTA_RICOH=y
CONFIG_YENTA_TI=y
CONFIG_YENTA_ENE_TUNE=y
CONFIG_YENTA_TOSHIBA=y
CONFIG_PD6729=y
# CONFIG_I82092 is not set
CONFIG_I82365=y
# CONFIG_TCIC is not set
CONFIG_PCMCIA_PROBE=y
CONFIG_PCCARD_NONSTATIC=y
# CONFIG_HOTPLUG_PCI is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_HAVE_AOUT=y
CONFIG_BINFMT_AOUT=y
CONFIG_BINFMT_MISC=y
CONFIG_HAVE_ATOMIC_IOMAP=y
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
CONFIG_XFRM=y
CONFIG_XFRM_USER=y
CONFIG_XFRM_SUB_POLICY=y
CONFIG_XFRM_MIGRATE=y
# CONFIG_XFRM_STATISTICS is not set
CONFIG_XFRM_IPCOMP=y
CONFIG_NET_KEY=y
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_NET_IPIP=y
CONFIG_NET_IPGRE=y
CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
# CONFIG_ARPD is not set
# CONFIG_SYN_COOKIES is not set
CONFIG_INET_AH=y
CONFIG_INET_ESP=y
CONFIG_INET_IPCOMP=y
CONFIG_INET_XFRM_TUNNEL=y
CONFIG_INET_TUNNEL=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
CONFIG_INET_XFRM_MODE_TUNNEL=y
CONFIG_INET_XFRM_MODE_BEET=y
CONFIG_INET_LRO=y
# CONFIG_INET_DIAG is not set
CONFIG_TCP_CONG_ADVANCED=y
# CONFIG_TCP_CONG_BIC is not set
# CONFIG_TCP_CONG_CUBIC is not set
CONFIG_TCP_CONG_WESTWOOD=y
# CONFIG_TCP_CONG_HTCP is not set
CONFIG_TCP_CONG_HSTCP=y
CONFIG_TCP_CONG_HYBLA=y
CONFIG_TCP_CONG_VEGAS=y
CONFIG_TCP_CONG_SCALABLE=y
CONFIG_TCP_CONG_LP=y
CONFIG_TCP_CONG_VENO=y
CONFIG_TCP_CONG_YEAH=y
CONFIG_TCP_CONG_ILLINOIS=y
# CONFIG_DEFAULT_BIC is not set
# CONFIG_DEFAULT_CUBIC is not set
# CONFIG_DEFAULT_HTCP is not set
# CONFIG_DEFAULT_VEGAS is not set
CONFIG_DEFAULT_WESTWOOD=y
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="westwood"
CONFIG_TCP_MD5SIG=y
# CONFIG_IPV6 is not set
CONFIG_NETLABEL=y
CONFIG_NETWORK_SECMARK=y
CONFIG_NETFILTER=y
CONFIG_NETFILTER_DEBUG=y
CONFIG_NETFILTER_ADVANCED=y
CONFIG_BRIDGE_NETFILTER=y

#
# Core Netfilter Configuration
#
CONFIG_NETFILTER_NETLINK=y
CONFIG_NETFILTER_NETLINK_QUEUE=y
CONFIG_NETFILTER_NETLINK_LOG=y
# CONFIG_NF_CONNTRACK is not set
CONFIG_NETFILTER_XTABLES=y
# CONFIG_NETFILTER_XT_TARGET_CLASSIFY is not set
CONFIG_NETFILTER_XT_TARGET_MARK=y
CONFIG_NETFILTER_XT_TARGET_NFLOG=y
CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y
CONFIG_NETFILTER_XT_TARGET_RATEEST=y
CONFIG_NETFILTER_XT_TARGET_SECMARK=y
CONFIG_NETFILTER_XT_TARGET_TCPMSS=y
# CONFIG_NETFILTER_XT_MATCH_COMMENT is not set
CONFIG_NETFILTER_XT_MATCH_DCCP=y
# CONFIG_NETFILTER_XT_MATCH_DSCP is not set
# CONFIG_NETFILTER_XT_MATCH_ESP is not set
CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y
# CONFIG_NETFILTER_XT_MATCH_HL is not set
CONFIG_NETFILTER_XT_MATCH_IPRANGE=y
# CONFIG_NETFILTER_XT_MATCH_LENGTH is not set
# CONFIG_NETFILTER_XT_MATCH_LIMIT is not set
# CONFIG_NETFILTER_XT_MATCH_MAC is not set
CONFIG_NETFILTER_XT_MATCH_MARK=y
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y
# CONFIG_NETFILTER_XT_MATCH_OWNER is not set
# CONFIG_NETFILTER_XT_MATCH_POLICY is not set
CONFIG_NETFILTER_XT_MATCH_PHYSDEV=y
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=y
CONFIG_NETFILTER_XT_MATCH_QUOTA=y
CONFIG_NETFILTER_XT_MATCH_RATEEST=y
CONFIG_NETFILTER_XT_MATCH_REALM=y
# CONFIG_NETFILTER_XT_MATCH_RECENT is not set
CONFIG_NETFILTER_XT_MATCH_SCTP=y
CONFIG_NETFILTER_XT_MATCH_STATISTIC=y
# CONFIG_NETFILTER_XT_MATCH_STRING is not set
CONFIG_NETFILTER_XT_MATCH_TCPMSS=y
CONFIG_NETFILTER_XT_MATCH_TIME=y
CONFIG_NETFILTER_XT_MATCH_U32=y
# CONFIG_NETFILTER_XT_MATCH_OSF is not set
# CONFIG_IP_VS is not set

#
# IP: Netfilter Configuration
#
# CONFIG_NF_DEFRAG_IPV4 is not set
# CONFIG_IP_NF_QUEUE is not set
# CONFIG_IP_NF_IPTABLES is not set
# CONFIG_IP_NF_ARPTABLES is not set
CONFIG_BRIDGE_NF_EBTABLES=y
# CONFIG_BRIDGE_EBT_BROUTE is not set
# CONFIG_BRIDGE_EBT_T_FILTER is not set
CONFIG_BRIDGE_EBT_T_NAT=y
CONFIG_BRIDGE_EBT_802_3=y
CONFIG_BRIDGE_EBT_AMONG=y
CONFIG_BRIDGE_EBT_ARP=y
CONFIG_BRIDGE_EBT_IP=y
CONFIG_BRIDGE_EBT_LIMIT=y
CONFIG_BRIDGE_EBT_MARK=y
CONFIG_BRIDGE_EBT_PKTTYPE=y
CONFIG_BRIDGE_EBT_STP=y
# CONFIG_BRIDGE_EBT_VLAN is not set
# CONFIG_BRIDGE_EBT_ARPREPLY is not set
CONFIG_BRIDGE_EBT_DNAT=y
CONFIG_BRIDGE_EBT_MARK_T=y
CONFIG_BRIDGE_EBT_REDIRECT=y
CONFIG_BRIDGE_EBT_SNAT=y
CONFIG_BRIDGE_EBT_LOG=y
# CONFIG_BRIDGE_EBT_ULOG is not set
CONFIG_BRIDGE_EBT_NFLOG=y
CONFIG_IP_DCCP=y

#
# DCCP CCIDs Configuration (EXPERIMENTAL)
#
CONFIG_IP_DCCP_CCID2_DEBUG=y
CONFIG_IP_DCCP_CCID3=y
# CONFIG_IP_DCCP_CCID3_DEBUG is not set
CONFIG_IP_DCCP_CCID3_RTO=100
CONFIG_IP_DCCP_TFRC_LIB=y
CONFIG_IP_SCTP=y
CONFIG_SCTP_DBG_MSG=y
CONFIG_SCTP_DBG_OBJCNT=y
CONFIG_SCTP_HMAC_NONE=y
# CONFIG_SCTP_HMAC_SHA1 is not set
# CONFIG_SCTP_HMAC_MD5 is not set
CONFIG_RDS=y
CONFIG_RDS_TCP=y
# CONFIG_RDS_DEBUG is not set
CONFIG_TIPC=y
# CONFIG_TIPC_ADVANCED is not set
CONFIG_TIPC_DEBUG=y
CONFIG_ATM=y
CONFIG_ATM_CLIP=y
CONFIG_ATM_CLIP_NO_ICMP=y
CONFIG_ATM_LANE=y
CONFIG_ATM_MPOA=y
# CONFIG_ATM_BR2684 is not set
CONFIG_STP=y
CONFIG_GARP=y
CONFIG_BRIDGE=y
CONFIG_NET_DSA=y
CONFIG_NET_DSA_TAG_DSA=y
# CONFIG_NET_DSA_TAG_EDSA is not set
# CONFIG_NET_DSA_TAG_TRAILER is not set
CONFIG_NET_DSA_MV88E6XXX=y
# CONFIG_NET_DSA_MV88E6060 is not set
CONFIG_NET_DSA_MV88E6XXX_NEED_PPU=y
CONFIG_NET_DSA_MV88E6131=y
# CONFIG_NET_DSA_MV88E6123_61_65 is not set
CONFIG_VLAN_8021Q=y
CONFIG_VLAN_8021Q_GVRP=y
# CONFIG_DECNET is not set
CONFIG_LLC=y
CONFIG_LLC2=y
CONFIG_IPX=y
# CONFIG_IPX_INTERN is not set
CONFIG_ATALK=y
# CONFIG_DEV_APPLETALK is not set
# CONFIG_X25 is not set
CONFIG_LAPB=y
CONFIG_ECONET=y
CONFIG_ECONET_AUNUDP=y
# CONFIG_ECONET_NATIVE is not set
# CONFIG_WAN_ROUTER is not set
CONFIG_PHONET=y
CONFIG_IEEE802154=y
# CONFIG_NET_SCHED is not set
CONFIG_NET_CLS_ROUTE=y
# CONFIG_DCB is not set

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
CONFIG_HAMRADIO=y

#
# Packet Radio protocols
#
# CONFIG_AX25 is not set
CONFIG_CAN=y
# CONFIG_CAN_RAW is not set
# CONFIG_CAN_BCM is not set

#
# CAN Device Drivers
#
CONFIG_CAN_VCAN=y
CONFIG_CAN_DEV=y
CONFIG_CAN_CALC_BITTIMING=y
CONFIG_CAN_SJA1000=y
CONFIG_CAN_SJA1000_ISA=y
# CONFIG_CAN_SJA1000_PLATFORM is not set
CONFIG_CAN_EMS_PCI=y
# CONFIG_CAN_EMS_USB is not set
# CONFIG_CAN_KVASER_PCI is not set
CONFIG_CAN_DEBUG_DEVICES=y
CONFIG_IRDA=y

#
# IrDA protocols
#
CONFIG_IRLAN=y
CONFIG_IRCOMM=y
CONFIG_IRDA_ULTRA=y

#
# IrDA options
#
CONFIG_IRDA_CACHE_LAST_LSAP=y
CONFIG_IRDA_FAST_RR=y
CONFIG_IRDA_DEBUG=y

#
# Infrared-port device drivers
#

#
# SIR device drivers
#
CONFIG_IRTTY_SIR=y

#
# Dongle support
#
# CONFIG_DONGLE is not set
CONFIG_KINGSUN_DONGLE=y
CONFIG_KSDAZZLE_DONGLE=y
# CONFIG_KS959_DONGLE is not set

#
# FIR device drivers
#
CONFIG_USB_IRDA=y
# CONFIG_SIGMATEL_FIR is not set
CONFIG_NSC_FIR=y
CONFIG_WINBOND_FIR=y
CONFIG_TOSHIBA_FIR=y
CONFIG_SMC_IRCC_FIR=y
CONFIG_ALI_FIR=y
CONFIG_VLSI_FIR=y
CONFIG_VIA_FIR=y
CONFIG_MCS_FIR=y
# CONFIG_BT is not set
CONFIG_AF_RXRPC=y
CONFIG_AF_RXRPC_DEBUG=y
# CONFIG_RXKAD is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set
CONFIG_CFG80211_DEFAULT_PS_VALUE=0
CONFIG_WIRELESS_OLD_REGULATORY=y
CONFIG_WIRELESS_EXT=y
CONFIG_WIRELESS_EXT_SYSFS=y
CONFIG_LIB80211=y
CONFIG_LIB80211_CRYPT_WEP=y
CONFIG_LIB80211_CRYPT_CCMP=y
CONFIG_LIB80211_CRYPT_TKIP=y
# CONFIG_LIB80211_DEBUG is not set

#
# CFG80211 needs to be enabled for MAC80211
#
CONFIG_WIMAX=y
CONFIG_WIMAX_DEBUG_LEVEL=8
CONFIG_RFKILL=y
CONFIG_RFKILL_INPUT=y

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_SYS_HYPERVISOR is not set
CONFIG_CONNECTOR=y
CONFIG_PROC_EVENTS=y
# CONFIG_PARPORT is not set
CONFIG_PNP=y
CONFIG_PNP_DEBUG_MESSAGES=y

#
# Protocols
#
CONFIG_ISAPNP=y
# CONFIG_PNPBIOS is not set
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_FD=y
# CONFIG_BLK_DEV_XD is not set
CONFIG_BLK_CPQ_DA=y
CONFIG_BLK_CPQ_CISS_DA=y
CONFIG_CISS_SCSI_TAPE=y
# CONFIG_BLK_DEV_DAC960 is not set
CONFIG_BLK_DEV_UMEM=y
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=y
CONFIG_BLK_DEV_NBD=y
CONFIG_BLK_DEV_SX8=y
# CONFIG_BLK_DEV_UB is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_XIP=y
CONFIG_CDROM_PKTCDVD=y
CONFIG_CDROM_PKTCDVD_BUFFERS=8
CONFIG_CDROM_PKTCDVD_WCACHE=y
CONFIG_ATA_OVER_ETH=y
# CONFIG_BLK_DEV_HD is not set
# CONFIG_MISC_DEVICES is not set
CONFIG_TIFM_CORE=y
CONFIG_DELL_LAPTOP=y
CONFIG_HAVE_IDE=y

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
# CONFIG_SCSI_NETLINK is not set
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
CONFIG_CHR_DEV_OSST=y
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
# CONFIG_CHR_DEV_SG is not set
CONFIG_CHR_DEV_SCH=y
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
# CONFIG_SCSI_LOGGING is not set
CONFIG_SCSI_SCAN_ASYNC=y

#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=y
# CONFIG_SCSI_FC_ATTRS is not set
CONFIG_SCSI_ISCSI_ATTRS=y
CONFIG_SCSI_SAS_ATTRS=y
CONFIG_SCSI_SAS_LIBSAS=y
# CONFIG_SCSI_SAS_ATA is not set
CONFIG_SCSI_SAS_HOST_SMP=y
# CONFIG_SCSI_SAS_LIBSAS_DEBUG is not set
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_SCSI_AIC7XXX=y
CONFIG_SCSI_LOWLEVEL_PCMCIA=y
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
# CONFIG_ATA_VERBOSE_ERROR is not set
CONFIG_ATA_ACPI=y
CONFIG_SATA_PMP=y
CONFIG_SATA_AHCI=y
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
# CONFIG_SATA_SVW is not set
CONFIG_ATA_PIIX=y
CONFIG_SATA_MV=y
CONFIG_SATA_NV=y
CONFIG_PDC_ADMA=y
CONFIG_SATA_QSTOR=y
CONFIG_SATA_PROMISE=y
CONFIG_SATA_SX4=y
CONFIG_SATA_SIL=y
CONFIG_SATA_SIS=y
CONFIG_SATA_ULI=y
CONFIG_SATA_VIA=y
CONFIG_SATA_VITESSE=y
CONFIG_SATA_INIC162X=y
# CONFIG_PATA_ACPI is not set
CONFIG_PATA_ALI=y
CONFIG_PATA_AMD=y
CONFIG_PATA_ARTOP=y
CONFIG_PATA_ATP867X=y
CONFIG_PATA_ATIIXP=y
# CONFIG_PATA_CMD640_PCI is not set
CONFIG_PATA_CMD64X=y
CONFIG_PATA_CS5520=y
# CONFIG_PATA_CS5530 is not set
# CONFIG_PATA_CS5535 is not set
# CONFIG_PATA_CS5536 is not set
# CONFIG_PATA_CYPRESS is not set
CONFIG_PATA_EFAR=y
CONFIG_ATA_GENERIC=y
CONFIG_PATA_HPT366=y
CONFIG_PATA_HPT37X=y
CONFIG_PATA_HPT3X2N=y
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_ISAPNP is not set
CONFIG_PATA_IT821X=y
CONFIG_PATA_IT8213=y
# CONFIG_PATA_JMICRON is not set
CONFIG_PATA_LEGACY=y
CONFIG_PATA_TRIFLEX=y
CONFIG_PATA_MARVELL=y
# CONFIG_PATA_MPIIX is not set
CONFIG_PATA_OLDPIIX=y
CONFIG_PATA_NETCELL=y
CONFIG_PATA_NINJA32=y
# CONFIG_PATA_NS87410 is not set
CONFIG_PATA_NS87415=y
CONFIG_PATA_OPTI=y
CONFIG_PATA_OPTIDMA=y
CONFIG_PATA_PCMCIA=y
CONFIG_PATA_PDC_OLD=y
CONFIG_PATA_QDI=y
CONFIG_PATA_RADISYS=y
CONFIG_PATA_RDC=y
CONFIG_PATA_RZ1000=y
CONFIG_PATA_SC1200=y
CONFIG_PATA_SERVERWORKS=y
CONFIG_PATA_PDC2027X=y
CONFIG_PATA_SIL680=y
CONFIG_PATA_SIS=y
CONFIG_PATA_VIA=y
# CONFIG_PATA_WINBOND is not set
# CONFIG_PATA_WINBOND_VLB is not set
# CONFIG_PATA_SCH is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_AUTODETECT=y
CONFIG_MD_LINEAR=y
CONFIG_MD_RAID0=y
# CONFIG_MD_RAID1 is not set
CONFIG_MD_RAID10=y
CONFIG_MD_RAID456=y
CONFIG_MULTICORE_RAID456=y
CONFIG_MD_RAID6_PQ=y
# CONFIG_ASYNC_RAID6_TEST is not set
CONFIG_MD_MULTIPATH=y
CONFIG_MD_FAULTY=y
# CONFIG_BLK_DEV_DM is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#

#
# You can enable one or both FireWire driver stacks.
#

#
# See the help texts for more information.
#
# CONFIG_FIREWIRE is not set
CONFIG_IEEE1394=y
# CONFIG_IEEE1394_OHCI1394 is not set
CONFIG_IEEE1394_PCILYNX=y
# CONFIG_IEEE1394_SBP2 is not set
CONFIG_IEEE1394_ETH1394_ROM_ENTRY=y
CONFIG_IEEE1394_ETH1394=y
CONFIG_IEEE1394_RAWIO=y
CONFIG_IEEE1394_VERBOSEDEBUG=y
CONFIG_I2O=y
CONFIG_I2O_LCT_NOTIFY_ON_CHANGES=y
# CONFIG_I2O_EXT_ADAPTEC is not set
# CONFIG_I2O_CONFIG is not set
CONFIG_I2O_BUS=y
CONFIG_I2O_BLOCK=y
CONFIG_I2O_SCSI=y
CONFIG_I2O_PROC=y
CONFIG_MACINTOSH_DRIVERS=y
CONFIG_MAC_EMUMOUSEBTN=y
CONFIG_NETDEVICES=y
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
CONFIG_MACVLAN=y
CONFIG_EQUALIZER=y
# CONFIG_TUN is not set
CONFIG_VETH=y
CONFIG_NET_SB1000=y
CONFIG_ARCNET=y
# CONFIG_ARCNET_1201 is not set
# CONFIG_ARCNET_1051 is not set
# CONFIG_ARCNET_RAW is not set
CONFIG_ARCNET_CAP=y
# CONFIG_ARCNET_COM90xx is not set
CONFIG_ARCNET_COM90xxIO=y
CONFIG_ARCNET_RIM_I=y
CONFIG_ARCNET_COM20020=y
CONFIG_ARCNET_COM20020_ISA=y
# CONFIG_ARCNET_COM20020_PCI is not set
CONFIG_PHYLIB=y

#
# MII PHY device drivers
#
CONFIG_MARVELL_PHY=y
# CONFIG_DAVICOM_PHY is not set
CONFIG_QSEMI_PHY=y
# CONFIG_LXT_PHY is not set
CONFIG_CICADA_PHY=y
# CONFIG_VITESSE_PHY is not set
CONFIG_SMSC_PHY=y
# CONFIG_BROADCOM_PHY is not set
# CONFIG_ICPLUS_PHY is not set
CONFIG_REALTEK_PHY=y
# CONFIG_NATIONAL_PHY is not set
# CONFIG_STE10XP is not set
CONFIG_LSI_ET1011C_PHY=y
# CONFIG_FIXED_PHY is not set
# CONFIG_MDIO_BITBANG is not set
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
CONFIG_CASSINI=y
CONFIG_NET_VENDOR_3COM=y
CONFIG_EL1=y
CONFIG_EL2=y
# CONFIG_ELPLUS is not set
CONFIG_EL16=y
CONFIG_EL3=y
CONFIG_3C515=y
CONFIG_VORTEX=y
CONFIG_TYPHOON=y
# CONFIG_LANCE is not set
CONFIG_NET_VENDOR_SMC=y
# CONFIG_ULTRAMCA is not set
CONFIG_ULTRA=y
CONFIG_ULTRA32=y
CONFIG_SMC9194=y
CONFIG_ENC28J60=y
CONFIG_ENC28J60_WRITEVERIFY=y
CONFIG_ETHOC=y
CONFIG_NET_VENDOR_RACAL=y
CONFIG_NI52=y
CONFIG_NI65=y
CONFIG_DNET=y
CONFIG_NET_TULIP=y
# CONFIG_DE2104X is not set
# CONFIG_TULIP is not set
CONFIG_DE4X5=y
# CONFIG_WINBOND_840 is not set
# CONFIG_DM9102 is not set
CONFIG_ULI526X=y
CONFIG_PCMCIA_XIRCOM=y
CONFIG_AT1700=y
CONFIG_DEPCA=y
# CONFIG_HP100 is not set
# CONFIG_NET_ISA is not set
CONFIG_IBMLANA=y
# CONFIG_IBM_NEW_EMAC_ZMII is not set
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
CONFIG_NET_PCI=y
# CONFIG_PCNET32 is not set
CONFIG_AMD8111_ETH=y
CONFIG_ADAPTEC_STARFIRE=y
# CONFIG_AC3200 is not set
# CONFIG_APRICOT is not set
CONFIG_B44=y
CONFIG_B44_PCI_AUTOSELECT=y
CONFIG_B44_PCICORE_AUTOSELECT=y
CONFIG_B44_PCI=y
CONFIG_FORCEDETH=y
# CONFIG_FORCEDETH_NAPI is not set
# CONFIG_CS89x0 is not set
CONFIG_E100=y
CONFIG_LNE390=y
CONFIG_FEALNX=y
# CONFIG_NATSEMI is not set
CONFIG_NE2K_PCI=y
CONFIG_NE3210=y
# CONFIG_ES3210 is not set
CONFIG_8139CP=y
CONFIG_8139TOO=y
CONFIG_8139TOO_PIO=y
CONFIG_8139TOO_TUNE_TWISTER=y
# CONFIG_8139TOO_8129 is not set
# CONFIG_8139_OLD_RX_RESET is not set
# CONFIG_R6040 is not set
# CONFIG_SIS900 is not set
# CONFIG_EPIC100 is not set
CONFIG_SMSC9420=y
CONFIG_SUNDANCE=y
# CONFIG_SUNDANCE_MMIO is not set
CONFIG_TLAN=y
CONFIG_KS8842=y
CONFIG_KS8851=y
CONFIG_KS8851_MLL=y
# CONFIG_VIA_RHINE is not set
CONFIG_SC92031=y
# CONFIG_ATL2 is not set
CONFIG_NETDEV_1000=y
CONFIG_ACENIC=y
CONFIG_ACENIC_OMIT_TIGON_I=y
CONFIG_DL2K=y
CONFIG_E1000=y
CONFIG_E1000E=y
CONFIG_IP1000=y
CONFIG_IGB=y
CONFIG_IGBVF=y
CONFIG_NS83820=y
# CONFIG_HAMACHI is not set
CONFIG_YELLOWFIN=y
CONFIG_R8169=y
CONFIG_R8169_VLAN=y
CONFIG_SIS190=y
CONFIG_SKGE=y
# CONFIG_SKGE_DEBUG is not set
CONFIG_SKY2=y
# CONFIG_SKY2_DEBUG is not set
# CONFIG_VIA_VELOCITY is not set
CONFIG_TIGON3=y
CONFIG_BNX2=y
# CONFIG_CNIC is not set
# CONFIG_QLA3XXX is not set
CONFIG_ATL1=y
CONFIG_ATL1E=y
CONFIG_ATL1C=y
CONFIG_JME=y
CONFIG_NETDEV_10000=y
CONFIG_MDIO=y
CONFIG_CHELSIO_T1=y
CONFIG_CHELSIO_T1_1G=y
CONFIG_CHELSIO_T3_DEPENDS=y
CONFIG_CHELSIO_T3=y
CONFIG_ENIC=y
# CONFIG_IXGBE is not set
# CONFIG_IXGB is not set
# CONFIG_S2IO is not set
# CONFIG_MYRI10GE is not set
CONFIG_NIU=y
CONFIG_MLX4_EN=y
CONFIG_MLX4_CORE=y
CONFIG_MLX4_DEBUG=y
# CONFIG_TEHUTI is not set
CONFIG_BNX2X=y
CONFIG_QLGE=y
# CONFIG_SFC is not set
CONFIG_BE2NET=y
CONFIG_TR=y
# CONFIG_IBMTR is not set
CONFIG_IBMOL=y
# CONFIG_IBMLS is not set
# CONFIG_3C359 is not set
CONFIG_TMS380TR=y
# CONFIG_TMSPCI is not set
CONFIG_SKISA=y
# CONFIG_PROTEON is not set
CONFIG_ABYSS=y
CONFIG_MADGEMC=y
CONFIG_SMCTR=y
CONFIG_WLAN=y
CONFIG_WLAN_PRE80211=y
# CONFIG_STRIP is not set
CONFIG_ARLAN=y
# CONFIG_WAVELAN is not set
# CONFIG_PCMCIA_WAVELAN is not set
CONFIG_PCMCIA_NETWAVE=y
CONFIG_WLAN_80211=y
CONFIG_PCMCIA_RAYCS=y
# CONFIG_LIBERTAS is not set
CONFIG_AIRO=y
CONFIG_ATMEL=y
CONFIG_PCI_ATMEL=y
# CONFIG_PCMCIA_ATMEL is not set
# CONFIG_AIRO_CS is not set
CONFIG_PCMCIA_WL3501=y
CONFIG_PRISM54=y
CONFIG_USB_ZD1201=y
CONFIG_HOSTAP=y
CONFIG_HOSTAP_FIRMWARE=y
CONFIG_HOSTAP_FIRMWARE_NVRAM=y
CONFIG_HOSTAP_PLX=y
CONFIG_HOSTAP_PCI=y
CONFIG_HOSTAP_CS=y

#
# WiMAX Wireless Broadband devices
#

#
# Enable MMC support to see WiMAX SDIO drivers
#

#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
CONFIG_USB_KAWETH=y
# CONFIG_USB_PEGASUS is not set
CONFIG_USB_RTL8150=y
CONFIG_USB_USBNET=y
# CONFIG_USB_NET_AX8817X is not set
CONFIG_USB_NET_CDCETHER=y
# CONFIG_USB_NET_CDC_EEM is not set
# CONFIG_USB_NET_DM9601 is not set
# CONFIG_USB_NET_SMSC95XX is not set
# CONFIG_USB_NET_GL620A is not set
# CONFIG_USB_NET_NET1080 is not set
CONFIG_USB_NET_PLUSB=y
# CONFIG_USB_NET_MCS7830 is not set
CONFIG_USB_NET_RNDIS_HOST=y
# CONFIG_USB_NET_CDC_SUBSET is not set
# CONFIG_USB_NET_ZAURUS is not set
CONFIG_USB_HSO=y
CONFIG_USB_NET_INT51X1=y
CONFIG_USB_CDC_PHONET=y
# CONFIG_NET_PCMCIA is not set
# CONFIG_WAN is not set
# CONFIG_ATM_DRIVERS is not set
# CONFIG_IEEE802154_DRIVERS is not set
CONFIG_FDDI=y
CONFIG_DEFXX=y
CONFIG_DEFXX_MMIO=y
# CONFIG_SKFP is not set
# CONFIG_HIPPI is not set
# CONFIG_PPP is not set
CONFIG_SLIP=y
# CONFIG_SLIP_COMPRESSED is not set
CONFIG_SLHC=y
CONFIG_SLIP_SMART=y
# CONFIG_SLIP_MODE_SLIP6 is not set
CONFIG_NET_FC=y
CONFIG_NETCONSOLE=y
CONFIG_NETCONSOLE_DYNAMIC=y
CONFIG_NETPOLL=y
CONFIG_NETPOLL_TRAP=y
CONFIG_NET_POLL_CONTROLLER=y
CONFIG_VMXNET3=y
CONFIG_ISDN=y
CONFIG_ISDN_I4L=y
CONFIG_ISDN_PPP=y
CONFIG_ISDN_PPP_VJ=y
CONFIG_ISDN_MPP=y
CONFIG_IPPP_FILTER=y
CONFIG_ISDN_PPP_BSDCOMP=y
CONFIG_ISDN_AUDIO=y
CONFIG_ISDN_TTY_FAX=y

#
# ISDN feature submodules
#
# CONFIG_ISDN_DIVERSION is not set

#
# ISDN4Linux hardware drivers
#

#
# Passive cards
#
CONFIG_ISDN_DRV_HISAX=y

#
# D-channel protocol features
#
CONFIG_HISAX_EURO=y
CONFIG_DE_AOC=y
# CONFIG_HISAX_NO_SENDCOMPLETE is not set
CONFIG_HISAX_NO_LLC=y
CONFIG_HISAX_NO_KEYPAD=y
CONFIG_HISAX_1TR6=y
# CONFIG_HISAX_NI1 is not set
CONFIG_HISAX_MAX_CARDS=8

#
# HiSax supported cards
#
# CONFIG_HISAX_16_0 is not set
CONFIG_HISAX_16_3=y
CONFIG_HISAX_TELESPCI=y
CONFIG_HISAX_S0BOX=y
CONFIG_HISAX_AVM_A1=y
CONFIG_HISAX_FRITZPCI=y
CONFIG_HISAX_AVM_A1_PCMCIA=y
# CONFIG_HISAX_ELSA is not set
CONFIG_HISAX_IX1MICROR2=y
CONFIG_HISAX_DIEHLDIVA=y
CONFIG_HISAX_ASUSCOM=y
# CONFIG_HISAX_TELEINT is not set
CONFIG_HISAX_HFCS=y
CONFIG_HISAX_SEDLBAUER=y
CONFIG_HISAX_SPORTSTER=y
# CONFIG_HISAX_MIC is not set
CONFIG_HISAX_NETJET=y
CONFIG_HISAX_NETJET_U=y
CONFIG_HISAX_NICCY=y
CONFIG_HISAX_ISURF=y
# CONFIG_HISAX_HSTSAPHIR is not set
# CONFIG_HISAX_BKM_A4T is not set
CONFIG_HISAX_SCT_QUADRO=y
CONFIG_HISAX_GAZEL=y
CONFIG_HISAX_HFC_PCI=y
CONFIG_HISAX_W6692=y
# CONFIG_HISAX_HFC_SX is not set
CONFIG_HISAX_ENTERNOW_PCI=y
CONFIG_HISAX_DEBUG=y

#
# HiSax PCMCIA card service modules
#
CONFIG_HISAX_SEDLBAUER_CS=y
CONFIG_HISAX_AVM_A1_CS=y
# CONFIG_HISAX_TELES_CS is not set

#
# HiSax sub driver modules
#
CONFIG_HISAX_ST5481=y
CONFIG_HISAX_HFCUSB=y
CONFIG_HISAX_HFC4S8S=y
# CONFIG_HISAX_FRITZ_PCIPNP is not set

#
# Active cards
#
CONFIG_ISDN_DRV_PCBIT=y
# CONFIG_ISDN_DRV_SC is not set
CONFIG_ISDN_DRV_ACT2000=y
CONFIG_ISDN_HDLC=y
CONFIG_ISDN_CAPI=y
# CONFIG_ISDN_DRV_AVMB1_VERBOSE_REASON is not set
# CONFIG_CAPI_TRACE is not set
CONFIG_ISDN_CAPI_MIDDLEWARE=y
CONFIG_ISDN_CAPI_CAPI20=y
# CONFIG_ISDN_CAPI_CAPIFS_BOOL is not set
CONFIG_ISDN_CAPI_CAPIDRV=y

#
# CAPI hardware drivers
#
CONFIG_CAPI_AVM=y
# CONFIG_ISDN_DRV_AVMB1_B1ISA is not set
CONFIG_ISDN_DRV_AVMB1_B1PCI=y
CONFIG_ISDN_DRV_AVMB1_B1PCIV4=y
CONFIG_ISDN_DRV_AVMB1_T1ISA=y
# CONFIG_ISDN_DRV_AVMB1_B1PCMCIA is not set
# CONFIG_ISDN_DRV_AVMB1_T1PCI is not set
# CONFIG_ISDN_DRV_AVMB1_C4 is not set
# CONFIG_CAPI_EICON is not set
# CONFIG_ISDN_DRV_GIGASET is not set
# CONFIG_PHONE is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_FF_MEMLESS=y
CONFIG_INPUT_POLLDEV=y

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
CONFIG_INPUT_EVBUG=y

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ADP5588=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_GPIO is not set
CONFIG_KEYBOARD_MATRIX=y
CONFIG_KEYBOARD_LM8323=y
CONFIG_KEYBOARD_MAX7359=y
# CONFIG_KEYBOARD_NEWTON is not set
CONFIG_KEYBOARD_OPENCORES=y
# CONFIG_KEYBOARD_STOWAWAY is not set
CONFIG_KEYBOARD_SUNKBD=y
# CONFIG_KEYBOARD_TWL4030 is not set
CONFIG_KEYBOARD_XTKBD=y
CONFIG_INPUT_MOUSE=y
# CONFIG_MOUSE_PS2 is not set
CONFIG_MOUSE_SERIAL=y
CONFIG_MOUSE_APPLETOUCH=y
CONFIG_MOUSE_BCM5974=y
# CONFIG_MOUSE_INPORT is not set
CONFIG_MOUSE_LOGIBM=y
# CONFIG_MOUSE_PC110PAD is not set
CONFIG_MOUSE_VSXXXAA=y
CONFIG_MOUSE_GPIO=y
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
# CONFIG_INPUT_JOYSTICK is not set
CONFIG_INPUT_TABLET=y
CONFIG_TABLET_USB_ACECAD=y
# CONFIG_TABLET_USB_AIPTEK is not set
# CONFIG_TABLET_USB_GTCO is not set
CONFIG_TABLET_USB_KBTAB=y
CONFIG_TABLET_USB_WACOM=y
CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
CONFIG_TOUCHSCREEN_AD7877=y
# CONFIG_TOUCHSCREEN_AD7879_I2C is not set
CONFIG_TOUCHSCREEN_AD7879_SPI=y
CONFIG_TOUCHSCREEN_AD7879=y
CONFIG_TOUCHSCREEN_EETI=y
CONFIG_TOUCHSCREEN_FUJITSU=y
CONFIG_TOUCHSCREEN_GUNZE=y
CONFIG_TOUCHSCREEN_ELO=y
CONFIG_TOUCHSCREEN_WACOM_W8001=y
CONFIG_TOUCHSCREEN_MCS5000=y
CONFIG_TOUCHSCREEN_MTOUCH=y
CONFIG_TOUCHSCREEN_INEXIO=y
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_HTCPEN is not set
CONFIG_TOUCHSCREEN_PENMOUNT=y
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
CONFIG_TOUCHSCREEN_USB_COMPOSITE=y
CONFIG_TOUCHSCREEN_USB_EGALAX=y
CONFIG_TOUCHSCREEN_USB_PANJIT=y
CONFIG_TOUCHSCREEN_USB_3M=y
CONFIG_TOUCHSCREEN_USB_ITM=y
CONFIG_TOUCHSCREEN_USB_ETURBO=y
CONFIG_TOUCHSCREEN_USB_GUNZE=y
CONFIG_TOUCHSCREEN_USB_DMC_TSC10=y
CONFIG_TOUCHSCREEN_USB_IRTOUCH=y
CONFIG_TOUCHSCREEN_USB_IDEALTEK=y
CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH=y
CONFIG_TOUCHSCREEN_USB_GOTOP=y
CONFIG_TOUCHSCREEN_USB_JASTEC=y
# CONFIG_TOUCHSCREEN_USB_E2I is not set
CONFIG_TOUCHSCREEN_TOUCHIT213=y
CONFIG_TOUCHSCREEN_TSC2007=y
CONFIG_TOUCHSCREEN_PCAP=y
# CONFIG_INPUT_MISC is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=y
CONFIG_GAMEPORT=y
CONFIG_GAMEPORT_NS558=y
CONFIG_GAMEPORT_L4=y
# CONFIG_GAMEPORT_EMU10K1 is not set
# CONFIG_GAMEPORT_FM801 is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_DEVKMEM=y
# CONFIG_SERIAL_NONSTANDARD is not set
CONFIG_NOZOMI=y

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_CS=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
# CONFIG_SERIAL_8250_MANY_PORTS is not set
# CONFIG_SERIAL_8250_SHARE_IRQ is not set
# CONFIG_SERIAL_8250_DETECT_IRQ is not set
CONFIG_SERIAL_8250_RSA=y
# CONFIG_SERIAL_8250_MCA is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_IPMI_HANDLER=y
# CONFIG_IPMI_PANIC_EVENT is not set
# CONFIG_IPMI_DEVICE_INTERFACE is not set
CONFIG_IPMI_SI=y
# CONFIG_IPMI_WATCHDOG is not set
CONFIG_IPMI_POWEROFF=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_TIMERIOMEM=y
# CONFIG_HW_RANDOM_INTEL is not set
CONFIG_HW_RANDOM_AMD=y
CONFIG_HW_RANDOM_GEODE=y
# CONFIG_HW_RANDOM_VIA is not set
CONFIG_NVRAM=y
# CONFIG_RTC is not set
# CONFIG_GEN_RTC is not set
CONFIG_DTLK=y
CONFIG_R3964=y
# CONFIG_APPLICOM is not set
CONFIG_SONYPI=y

#
# PCMCIA character devices
#
CONFIG_SYNCLINK_CS=y
# CONFIG_CARDMAN_4000 is not set
CONFIG_CARDMAN_4040=y
# CONFIG_IPWIRELESS is not set
# CONFIG_MWAVE is not set
CONFIG_SCx200_GPIO=y
# CONFIG_PC8736x_GPIO is not set
CONFIG_NSC_GPIO=y
CONFIG_CS5535_GPIO=y
CONFIG_RAW_DRIVER=y
CONFIG_MAX_RAW_DEVS=256
# CONFIG_HPET is not set
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
CONFIG_TELCLOCK=y
CONFIG_DEVPORT=y
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_HELPER_AUTO is not set

#
# I2C Algorithms
#
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCF=y
CONFIG_I2C_ALGOPCA=y

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
CONFIG_I2C_ALI1535=y
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
CONFIG_I2C_AMD756=y
# CONFIG_I2C_AMD8111 is not set
CONFIG_I2C_I801=y
# CONFIG_I2C_ISCH is not set
CONFIG_I2C_PIIX4=y
CONFIG_I2C_NFORCE2=y
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
CONFIG_I2C_SIS96X=y
CONFIG_I2C_VIA=y
# CONFIG_I2C_VIAPRO is not set

#
# ACPI drivers
#
CONFIG_I2C_SCMI=y

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_SIMTEC is not set

#
# External I2C/SMBus adapter drivers
#
CONFIG_I2C_PARPORT_LIGHT=y
CONFIG_I2C_TAOS_EVM=y
CONFIG_I2C_TINY_USB=y

#
# Graphics adapter I2C/DDC channel drivers
#
# CONFIG_I2C_VOODOO3 is not set

#
# Other I2C/SMBus bus drivers
#
CONFIG_I2C_PCA_PLATFORM=y
CONFIG_SCx200_I2C=y
CONFIG_SCx200_I2C_SCL=12
CONFIG_SCx200_I2C_SDA=13
# CONFIG_SCx200_ACB is not set

#
# Miscellaneous I2C Chip support
#
CONFIG_DS1682=y
CONFIG_SENSORS_TSL2550=y
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
CONFIG_I2C_DEBUG_BUS=y
CONFIG_I2C_DEBUG_CHIP=y
CONFIG_SPI=y
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
CONFIG_SPI_BITBANG=y
CONFIG_SPI_GPIO=y

#
# SPI Protocol Masters
#
CONFIG_SPI_SPIDEV=y
CONFIG_SPI_TLE62X0=y

#
# PPS support
#
CONFIG_PPS=y
CONFIG_PPS_DEBUG=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
CONFIG_GPIOLIB=y
# CONFIG_GPIO_SYSFS is not set

#
# Memory mapped GPIO expanders:
#

#
# I2C GPIO expanders:
#
# CONFIG_GPIO_MAX732X is not set
CONFIG_GPIO_PCA953X=y
CONFIG_GPIO_PCF857X=y
CONFIG_GPIO_TWL4030=y

#
# PCI GPIO expanders:
#
CONFIG_GPIO_BT8XX=y
CONFIG_GPIO_LANGWELL=y

#
# SPI GPIO expanders:
#
CONFIG_GPIO_MAX7301=y
CONFIG_GPIO_MCP23S08=y
CONFIG_GPIO_MC33880=y

#
# AC97 GPIO expanders:
#
CONFIG_W1=y
CONFIG_W1_CON=y

#
# 1-wire Bus Masters
#
CONFIG_W1_MASTER_MATROX=y
CONFIG_W1_MASTER_DS2490=y
CONFIG_W1_MASTER_DS2482=y
CONFIG_W1_MASTER_GPIO=y

#
# 1-wire Slaves
#
CONFIG_W1_SLAVE_THERM=y
CONFIG_W1_SLAVE_SMEM=y
CONFIG_W1_SLAVE_DS2431=y
# CONFIG_W1_SLAVE_DS2433 is not set
CONFIG_W1_SLAVE_DS2760=y
CONFIG_W1_SLAVE_BQ27000=y
CONFIG_POWER_SUPPLY=y
CONFIG_POWER_SUPPLY_DEBUG=y
CONFIG_PDA_POWER=y
CONFIG_BATTERY_DS2760=y
CONFIG_BATTERY_DS2782=y
CONFIG_BATTERY_BQ27x00=y
# CONFIG_BATTERY_MAX17040 is not set
CONFIG_HWMON=y
CONFIG_HWMON_VID=y
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
CONFIG_SENSORS_ABITUGURU=y
CONFIG_SENSORS_ABITUGURU3=y
# CONFIG_SENSORS_AD7414 is not set
CONFIG_SENSORS_AD7418=y
# CONFIG_SENSORS_ADCXX is not set
CONFIG_SENSORS_ADM1021=y
CONFIG_SENSORS_ADM1025=y
CONFIG_SENSORS_ADM1026=y
CONFIG_SENSORS_ADM1029=y
CONFIG_SENSORS_ADM1031=y
CONFIG_SENSORS_ADM9240=y
CONFIG_SENSORS_ADT7462=y
# CONFIG_SENSORS_ADT7470 is not set
CONFIG_SENSORS_ADT7473=y
CONFIG_SENSORS_ADT7475=y
CONFIG_SENSORS_K8TEMP=y
CONFIG_SENSORS_ASB100=y
CONFIG_SENSORS_ATXP1=y
CONFIG_SENSORS_DS1621=y
# CONFIG_SENSORS_I5K_AMB is not set
CONFIG_SENSORS_F71805F=y
CONFIG_SENSORS_F71882FG=y
CONFIG_SENSORS_F75375S=y
CONFIG_SENSORS_FSCHMD=y
CONFIG_SENSORS_G760A=y
CONFIG_SENSORS_GL518SM=y
CONFIG_SENSORS_GL520SM=y
CONFIG_SENSORS_CORETEMP=y
CONFIG_SENSORS_IBMAEM=y
CONFIG_SENSORS_IBMPEX=y
# CONFIG_SENSORS_IT87 is not set
CONFIG_SENSORS_LM63=y
CONFIG_SENSORS_LM70=y
# CONFIG_SENSORS_LM75 is not set
CONFIG_SENSORS_LM77=y
# CONFIG_SENSORS_LM78 is not set
CONFIG_SENSORS_LM80=y
CONFIG_SENSORS_LM83=y
CONFIG_SENSORS_LM85=y
# CONFIG_SENSORS_LM87 is not set
CONFIG_SENSORS_LTC4215=y
CONFIG_SENSORS_LTC4245=y
# CONFIG_SENSORS_LM95241 is not set
CONFIG_SENSORS_MAX1111=y
CONFIG_SENSORS_MAX1619=y
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_PC87360 is not set
CONFIG_SENSORS_PC87427=y
CONFIG_SENSORS_PCF8591=y
# CONFIG_SENSORS_SHT15 is not set
CONFIG_SENSORS_SIS5595=y
# CONFIG_SENSORS_DME1737 is not set
CONFIG_SENSORS_SMSC47M1=y
CONFIG_SENSORS_SMSC47M192=y
CONFIG_SENSORS_SMSC47B397=y
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP401 is not set
CONFIG_SENSORS_TMP421=y
CONFIG_SENSORS_VIA686A=y
CONFIG_SENSORS_VT1211=y
CONFIG_SENSORS_VT8231=y
# CONFIG_SENSORS_W83781D is not set
CONFIG_SENSORS_W83791D=y
CONFIG_SENSORS_W83792D=y
# CONFIG_SENSORS_W83793 is not set
CONFIG_SENSORS_W83L785TS=y
CONFIG_SENSORS_W83L786NG=y
CONFIG_SENSORS_W83627HF=y
CONFIG_SENSORS_W83627EHF=y
CONFIG_SENSORS_HDAPS=y
CONFIG_SENSORS_APPLESMC=y

#
# ACPI drivers
#
CONFIG_SENSORS_ATK0110=y
# CONFIG_SENSORS_LIS3LV02D is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_NOWAYOUT=y

#
# Watchdog Device Drivers
#
CONFIG_SOFT_WATCHDOG=y
CONFIG_TWL4030_WATCHDOG=y
CONFIG_ACQUIRE_WDT=y
# CONFIG_ADVANTECH_WDT is not set
CONFIG_ALIM1535_WDT=y
# CONFIG_ALIM7101_WDT is not set
# CONFIG_SC520_WDT is not set
# CONFIG_IB700_WDT is not set
# CONFIG_IBMASR is not set
# CONFIG_WAFER_WDT is not set
CONFIG_I6300ESB_WDT=y
# CONFIG_ITCO_WDT is not set
# CONFIG_IT8712F_WDT is not set
# CONFIG_IT87_WDT is not set
CONFIG_HP_WATCHDOG=y
CONFIG_SC1200_WDT=y
# CONFIG_SCx200_WDT is not set
# CONFIG_PC87413_WDT is not set
CONFIG_60XX_WDT=y
CONFIG_SBC8360_WDT=y
CONFIG_SBC7240_WDT=y
CONFIG_CPU5_WDT=y
CONFIG_SMSC_SCH311X_WDT=y
# CONFIG_SMSC37B787_WDT is not set
CONFIG_W83627HF_WDT=y
# CONFIG_W83877F_WDT is not set
CONFIG_W83977F_WDT=y
# CONFIG_MACHZ_WDT is not set
# CONFIG_SBC_EPX_C3_WATCHDOG is not set

#
# ISA-based Watchdog Cards
#
CONFIG_PCWATCHDOG=y
CONFIG_MIXCOMWD=y

#
# PCI-based Watchdog Cards
#
CONFIG_PCIPCWATCHDOG=y
CONFIG_WDTPCI=y

#
# USB-based Watchdog Cards
#
CONFIG_USBPCWATCHDOG=y
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
CONFIG_SSB=y
CONFIG_SSB_SPROM=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
# CONFIG_SSB_B43_PCI_BRIDGE is not set
CONFIG_SSB_PCMCIAHOST_POSSIBLE=y
CONFIG_SSB_PCMCIAHOST=y
# CONFIG_SSB_DEBUG is not set
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
CONFIG_SSB_DRIVER_PCICORE=y

#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_SM501 is not set
CONFIG_HTC_PASIC3=y
CONFIG_TPS65010=y
CONFIG_TWL4030_CORE=y
# CONFIG_MFD_TMIO is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X is not set
# CONFIG_MFD_PCF50633 is not set
CONFIG_MFD_MC13783=y
CONFIG_AB3100_CORE=y
# CONFIG_AB3100_OTP is not set
CONFIG_EZX_PCAP=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_DEBUG=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_VIRTUAL_CONSUMER=y
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
CONFIG_REGULATOR_BQ24022=y
# CONFIG_REGULATOR_MAX1586 is not set
# CONFIG_REGULATOR_TWL4030 is not set
CONFIG_REGULATOR_LP3971=y
CONFIG_REGULATOR_PCAP=y
CONFIG_REGULATOR_MC13783=y
CONFIG_REGULATOR_AB3100=y
# CONFIG_REGULATOR_TPS65023 is not set
CONFIG_REGULATOR_TPS6507X=y
# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
CONFIG_AGP=y
CONFIG_AGP_ALI=y
# CONFIG_AGP_ATI is not set
CONFIG_AGP_AMD=y
CONFIG_AGP_AMD64=y
CONFIG_AGP_INTEL=y
CONFIG_AGP_NVIDIA=y
CONFIG_AGP_SIS=y
# CONFIG_AGP_SWORKS is not set
# CONFIG_AGP_VIA is not set
# CONFIG_AGP_EFFICEON is not set
CONFIG_VGA_ARB=y
CONFIG_DRM=y
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_TTM=y
CONFIG_DRM_TDFX=y
CONFIG_DRM_R128=y
CONFIG_DRM_RADEON=y
CONFIG_DRM_I810=y
# CONFIG_DRM_I830 is not set
# CONFIG_DRM_I915 is not set
# CONFIG_DRM_MGA is not set
CONFIG_DRM_SIS=y
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
CONFIG_VGASTATE=y
CONFIG_VIDEO_OUTPUT_CONTROL=y
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_DDC=y
CONFIG_FB_BOOT_VESA_SUPPORT=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
CONFIG_FB_SYS_FILLRECT=y
CONFIG_FB_SYS_COPYAREA=y
CONFIG_FB_SYS_IMAGEBLIT=y
CONFIG_FB_FOREIGN_ENDIAN=y
CONFIG_FB_BOTH_ENDIAN=y
# CONFIG_FB_BIG_ENDIAN is not set
# CONFIG_FB_LITTLE_ENDIAN is not set
CONFIG_FB_SYS_FOPS=y
CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_SVGALIB=y
# CONFIG_FB_MACMODES is not set
CONFIG_FB_BACKLIGHT=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
# CONFIG_FB_PM2 is not set
CONFIG_FB_CYBER2000=y
CONFIG_FB_ARC=y
CONFIG_FB_IMSTT=y
# CONFIG_FB_UVESA is not set
# CONFIG_FB_N411 is not set
CONFIG_FB_HGA=y
# CONFIG_FB_HGA_ACCEL is not set
# CONFIG_FB_S1D13XXX is not set
CONFIG_FB_NVIDIA=y
CONFIG_FB_NVIDIA_I2C=y
# CONFIG_FB_NVIDIA_DEBUG is not set
# CONFIG_FB_NVIDIA_BACKLIGHT is not set
CONFIG_FB_RIVA=y
# CONFIG_FB_RIVA_I2C is not set
CONFIG_FB_RIVA_DEBUG=y
CONFIG_FB_RIVA_BACKLIGHT=y
CONFIG_FB_I810=y
CONFIG_FB_I810_GTF=y
# CONFIG_FB_I810_I2C is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_ATY128 is not set
CONFIG_FB_ATY=y
CONFIG_FB_ATY_CT=y
CONFIG_FB_ATY_GENERIC_LCD=y
CONFIG_FB_ATY_GX=y
CONFIG_FB_ATY_BACKLIGHT=y
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
CONFIG_FB_SIS=y
CONFIG_FB_SIS_300=y
# CONFIG_FB_SIS_315 is not set
# CONFIG_FB_VIA is not set
CONFIG_FB_NEOMAGIC=y
CONFIG_FB_KYRO=y
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
CONFIG_FB_VT8623=y
# CONFIG_FB_TRIDENT is not set
CONFIG_FB_ARK=y
CONFIG_FB_PM3=y
CONFIG_FB_CARMINE=y
# CONFIG_FB_CARMINE_DRAM_EVAL is not set
CONFIG_CARMINE_DRAM_CUSTOM=y
CONFIG_FB_GEODE=y
CONFIG_FB_GEODE_LX=y
CONFIG_FB_GEODE_GX=y
CONFIG_FB_GEODE_GX1=y
CONFIG_FB_TMIO=y
# CONFIG_FB_TMIO_ACCELL is not set
CONFIG_FB_METRONOME=y
CONFIG_FB_MB862XX=y
# CONFIG_FB_MB862XX_PCI_GDC is not set
# CONFIG_FB_BROADSHEET is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_GENERIC=y
CONFIG_BACKLIGHT_PROGEAR=y
CONFIG_BACKLIGHT_MBP_NVIDIA=y
# CONFIG_BACKLIGHT_SAHARA is not set

#
# Display device support
#
CONFIG_DISPLAY_SUPPORT=y

#
# Display hardware drivers
#

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
CONFIG_FONTS=y
# CONFIG_FONT_8x8 is not set
CONFIG_FONT_8x16=y
# CONFIG_FONT_6x11 is not set
CONFIG_FONT_7x14=y
CONFIG_FONT_PEARL_8x8=y
CONFIG_FONT_ACORN_8x8=y
CONFIG_FONT_MINI_4x6=y
# CONFIG_FONT_SUN8x16 is not set
# CONFIG_FONT_SUN12x22 is not set
CONFIG_FONT_10x18=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y
CONFIG_SOUND=y
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_HWDEP=y
CONFIG_SND_RAWMIDI=y
CONFIG_SND_SEQUENCER=y
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y
# CONFIG_SND_HRTIMER is not set
# CONFIG_SND_DYNAMIC_MINORS is not set
CONFIG_SND_SUPPORT_OLD_API=y
# CONFIG_SND_VERBOSE_PROCFS is not set
CONFIG_SND_VERBOSE_PRINTK=y
CONFIG_SND_DEBUG=y
# CONFIG_SND_DEBUG_VERBOSE is not set
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_RAWMIDI_SEQ=y
# CONFIG_SND_OPL3_LIB_SEQ is not set
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
# CONFIG_SND_EMU10K1_SEQ is not set
# CONFIG_SND_DRIVERS is not set
# CONFIG_SND_ISA is not set
# CONFIG_SND_PCI is not set
CONFIG_SND_SPI=y
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=y
CONFIG_SND_USB_USX2Y=y
CONFIG_SND_USB_CAIAQ=y
CONFIG_SND_USB_CAIAQ_INPUT=y
CONFIG_SND_USB_US122L=y
# CONFIG_SND_PCMCIA is not set
# CONFIG_SND_SOC is not set
CONFIG_SOUND_PRIME=y
CONFIG_SOUND_OSS=y
CONFIG_SOUND_TRACEINIT=y
CONFIG_SOUND_DMAP=y
# CONFIG_SOUND_SSCAPE is not set
CONFIG_SOUND_VMIDI=y
CONFIG_SOUND_TRIX=y
# CONFIG_SOUND_MSS is not set
CONFIG_SOUND_MPU401=y
CONFIG_SOUND_PAS=y
CONFIG_PAS_JOYSTICK=y
CONFIG_SOUND_PSS=y
# CONFIG_PSS_MIXER is not set
CONFIG_SOUND_SB=y
# CONFIG_SOUND_YM3812 is not set
CONFIG_SOUND_UART6850=y
CONFIG_SOUND_AEDSP16=y
CONFIG_SC6600=y
CONFIG_SC6600_JOY=y
CONFIG_SC6600_CDROM=4
CONFIG_SC6600_CDROMBASE=0
CONFIG_SOUND_KAHLUA=y
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
# CONFIG_HIDRAW is not set

#
# USB Input Devices
#
CONFIG_USB_HID=y
CONFIG_HID_PID=y
CONFIG_USB_HIDDEV=y
CONFIG_USB_MOUSE=y

#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
CONFIG_HID_APPLE=y
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
CONFIG_HID_CYPRESS=y
CONFIG_HID_DRAGONRISE=y
CONFIG_DRAGONRISE_FF=y
CONFIG_HID_EZKEY=y
CONFIG_HID_KYE=y
CONFIG_HID_GYRATION=y
CONFIG_HID_TWINHAN=y
CONFIG_HID_KENSINGTON=y
CONFIG_HID_LOGITECH=y
# CONFIG_LOGITECH_FF is not set
# CONFIG_LOGIRUMBLEPAD2_FF is not set
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
CONFIG_HID_NTRIG=y
CONFIG_HID_PANTHERLORD=y
CONFIG_PANTHERLORD_FF=y
CONFIG_HID_PETALYNX=y
CONFIG_HID_SAMSUNG=y
CONFIG_HID_SONY=y
CONFIG_HID_SUNPLUS=y
CONFIG_HID_GREENASIA=y
# CONFIG_GREENASIA_FF is not set
CONFIG_HID_SMARTJOYPLUS=y
# CONFIG_SMARTJOYPLUS_FF is not set
CONFIG_HID_TOPSEED=y
CONFIG_HID_THRUSTMASTER=y
CONFIG_THRUSTMASTER_FF=y
CONFIG_HID_ZEROPLUS=y
CONFIG_ZEROPLUS_FF=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=y
# CONFIG_USB_DEBUG is not set
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
# CONFIG_USB_DEVICEFS is not set
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_DYNAMIC_MINORS=y
# CONFIG_USB_SUSPEND is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_MON is not set
CONFIG_USB_WUSB=y
CONFIG_USB_WUSB_CBAF=y
CONFIG_USB_WUSB_CBAF_DEBUG=y

#
# USB Host Controller Drivers
#
CONFIG_USB_C67X00_HCD=y
# CONFIG_USB_XHCI_HCD is not set
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_OXU210HP_HCD=y
CONFIG_USB_ISP116X_HCD=y
CONFIG_USB_ISP1760_HCD=y
CONFIG_USB_ISP1362_HCD=y
CONFIG_USB_OHCI_HCD=y
# CONFIG_USB_OHCI_HCD_SSB is not set
# CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set
# CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_UHCI_HCD=y
CONFIG_USB_U132_HCD=y
CONFIG_USB_SL811_HCD=y
CONFIG_USB_SL811_CS=y
CONFIG_USB_R8A66597_HCD=y
CONFIG_USB_HWA_HCD=y

#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
CONFIG_USB_PRINTER=y
CONFIG_USB_WDM=y
CONFIG_USB_TMC=y

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
# CONFIG_USB_STORAGE is not set
# CONFIG_USB_LIBUSUAL is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
CONFIG_USB_MICROTEK=y

#
# USB port drivers
#
CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_CONSOLE=y
CONFIG_USB_EZUSB=y
CONFIG_USB_SERIAL_GENERIC=y
# CONFIG_USB_SERIAL_AIRCABLE is not set
# CONFIG_USB_SERIAL_ARK3116 is not set
# CONFIG_USB_SERIAL_BELKIN is not set
CONFIG_USB_SERIAL_CH341=y
# CONFIG_USB_SERIAL_WHITEHEAT is not set
CONFIG_USB_SERIAL_DIGI_ACCELEPORT=y
CONFIG_USB_SERIAL_CP210X=y
CONFIG_USB_SERIAL_CYPRESS_M8=y
CONFIG_USB_SERIAL_EMPEG=y
CONFIG_USB_SERIAL_FTDI_SIO=y
CONFIG_USB_SERIAL_FUNSOFT=y
CONFIG_USB_SERIAL_VISOR=y
CONFIG_USB_SERIAL_IPAQ=y
# CONFIG_USB_SERIAL_IR is not set
# CONFIG_USB_SERIAL_EDGEPORT is not set
CONFIG_USB_SERIAL_EDGEPORT_TI=y
CONFIG_USB_SERIAL_GARMIN=y
# CONFIG_USB_SERIAL_IPW is not set
CONFIG_USB_SERIAL_IUU=y
CONFIG_USB_SERIAL_KEYSPAN_PDA=y
CONFIG_USB_SERIAL_KEYSPAN=y
# CONFIG_USB_SERIAL_KEYSPAN_MPR is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28 is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28X is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28XA is not set
CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y
CONFIG_USB_SERIAL_KEYSPAN_USA19=y
CONFIG_USB_SERIAL_KEYSPAN_USA18X=y
CONFIG_USB_SERIAL_KEYSPAN_USA19W=y
# CONFIG_USB_SERIAL_KEYSPAN_USA19QW is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19QI is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA49W is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA49WLC is not set
# CONFIG_USB_SERIAL_KLSI is not set
# CONFIG_USB_SERIAL_KOBIL_SCT is not set
CONFIG_USB_SERIAL_MCT_U232=y
CONFIG_USB_SERIAL_MOS7720=y
# CONFIG_USB_SERIAL_MOS7840 is not set
# CONFIG_USB_SERIAL_MOTOROLA is not set
# CONFIG_USB_SERIAL_NAVMAN is not set
CONFIG_USB_SERIAL_PL2303=y
CONFIG_USB_SERIAL_OTI6858=y
# CONFIG_USB_SERIAL_QUALCOMM is not set
CONFIG_USB_SERIAL_SPCP8X5=y
CONFIG_USB_SERIAL_HP4X=y
CONFIG_USB_SERIAL_SAFE=y
CONFIG_USB_SERIAL_SAFE_PADDED=y
# CONFIG_USB_SERIAL_SIEMENS_MPI is not set
# CONFIG_USB_SERIAL_SIERRAWIRELESS is not set
CONFIG_USB_SERIAL_SYMBOL=y
# CONFIG_USB_SERIAL_TI is not set
CONFIG_USB_SERIAL_CYBERJACK=y
CONFIG_USB_SERIAL_XIRCOM=y
CONFIG_USB_SERIAL_OPTION=y
# CONFIG_USB_SERIAL_OMNINET is not set
CONFIG_USB_SERIAL_OPTICON=y
CONFIG_USB_SERIAL_DEBUG=y

#
# USB Miscellaneous drivers
#
CONFIG_USB_EMI62=y
CONFIG_USB_EMI26=y
# CONFIG_USB_ADUTUX is not set
CONFIG_USB_SEVSEG=y
CONFIG_USB_RIO500=y
# CONFIG_USB_LEGOTOWER is not set
CONFIG_USB_LCD=y
# CONFIG_USB_BERRY_CHARGE is not set
# CONFIG_USB_LED is not set
CONFIG_USB_CYPRESS_CY7C63=y
CONFIG_USB_CYTHERM=y
# CONFIG_USB_IDMOUSE is not set
CONFIG_USB_FTDI_ELAN=y
CONFIG_USB_APPLEDISPLAY=y
CONFIG_USB_SISUSBVGA=y
# CONFIG_USB_SISUSBVGA_CON is not set
# CONFIG_USB_LD is not set
CONFIG_USB_TRANCEVIBRATOR=y
CONFIG_USB_IOWARRIOR=y
CONFIG_USB_TEST=y
# CONFIG_USB_ISIGHTFW is not set
CONFIG_USB_VST=y
# CONFIG_USB_ATM is not set

#
# OTG and related infrastructure
#
CONFIG_USB_OTG_UTILS=y
CONFIG_USB_GPIO_VBUS=y
# CONFIG_NOP_USB_XCEIV is not set
CONFIG_UWB=y
CONFIG_UWB_HWA=y
# CONFIG_UWB_WHCI is not set
CONFIG_UWB_WLP=y
CONFIG_UWB_I1480U=y
CONFIG_UWB_I1480U_WLP=y
# CONFIG_MMC is not set
CONFIG_MEMSTICK=y
CONFIG_MEMSTICK_DEBUG=y

#
# MemoryStick drivers
#
CONFIG_MEMSTICK_UNSAFE_RESUME=y
# CONFIG_MSPRO_BLOCK is not set

#
# MemoryStick Host Controller Drivers
#
CONFIG_MEMSTICK_TIFM_MS=y
CONFIG_MEMSTICK_JMICRON_38X=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y

#
# LED drivers
#
# CONFIG_LEDS_NET48XX is not set
# CONFIG_LEDS_WRAP is not set
CONFIG_LEDS_ALIX2=y
# CONFIG_LEDS_PCA9532 is not set
CONFIG_LEDS_GPIO=y
# CONFIG_LEDS_GPIO_PLATFORM is not set
# CONFIG_LEDS_LP3944 is not set
CONFIG_LEDS_CLEVO_MAIL=y
CONFIG_LEDS_PCA955X=y
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_BD2802 is not set

#
# LED Triggers
#
# CONFIG_LEDS_TRIGGERS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC=y

#
# Reporting subsystems
#
CONFIG_EDAC_DEBUG=y
CONFIG_EDAC_DEBUG_VERBOSE=y
# CONFIG_EDAC_DECODE_MCE is not set
CONFIG_EDAC_MM_EDAC=y
CONFIG_EDAC_AMD76X=y
# CONFIG_EDAC_E7XXX is not set
CONFIG_EDAC_E752X=y
CONFIG_EDAC_I82875P=y
CONFIG_EDAC_I82975X=y
CONFIG_EDAC_I3000=y
CONFIG_EDAC_I3200=y
CONFIG_EDAC_X38=y
CONFIG_EDAC_I5400=y
CONFIG_EDAC_I82860=y
CONFIG_EDAC_R82600=y
CONFIG_EDAC_I5000=y
# CONFIG_EDAC_I5100 is not set
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set
CONFIG_AUXDISPLAY=y
CONFIG_UIO=y
CONFIG_UIO_CIF=y
CONFIG_UIO_PDRV=y
# CONFIG_UIO_PDRV_GENIRQ is not set
# CONFIG_UIO_SMX is not set
CONFIG_UIO_AEC=y
# CONFIG_UIO_SERCOS3 is not set
# CONFIG_UIO_PCI_GENERIC is not set

#
# TI VLYNQ
#
CONFIG_X86_PLATFORM_DEVICES=y
CONFIG_ACER_WMI=y
CONFIG_DELL_WMI=y
CONFIG_FUJITSU_LAPTOP=y
CONFIG_FUJITSU_LAPTOP_DEBUG=y
CONFIG_TC1100_WMI=y
CONFIG_HP_WMI=y
CONFIG_MSI_LAPTOP=y
CONFIG_PANASONIC_LAPTOP=y
CONFIG_COMPAL_LAPTOP=y
CONFIG_SONY_LAPTOP=y
CONFIG_SONYPI_COMPAT=y
CONFIG_THINKPAD_ACPI=y
CONFIG_THINKPAD_ACPI_DEBUGFACILITIES=y
CONFIG_THINKPAD_ACPI_DEBUG=y
# CONFIG_THINKPAD_ACPI_UNSAFE_LEDS is not set
CONFIG_THINKPAD_ACPI_VIDEO=y
CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
# CONFIG_INTEL_MENLOW is not set
CONFIG_ACPI_WMI=y
CONFIG_ACPI_ASUS=y
# CONFIG_TOPSTAR_LAPTOP is not set
# CONFIG_ACPI_TOSHIBA is not set

#
# Firmware Drivers
#
# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DELL_RBU=y
CONFIG_DCDBAS=y
# CONFIG_DMIID is not set
CONFIG_ISCSI_IBFT_FIND=y
# CONFIG_ISCSI_IBFT is not set

#
# File systems
#
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
CONFIG_EXT3_DEFAULTS_TO_ORDERED=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
# CONFIG_EXT4_FS is not set
CONFIG_JBD=y
CONFIG_JBD_DEBUG=y
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
CONFIG_REISERFS_FS=y
CONFIG_REISERFS_CHECK=y
CONFIG_REISERFS_PROC_INFO=y
CONFIG_REISERFS_FS_XATTR=y
# CONFIG_REISERFS_FS_POSIX_ACL is not set
CONFIG_REISERFS_FS_SECURITY=y
CONFIG_JFS_FS=y
CONFIG_JFS_POSIX_ACL=y
CONFIG_JFS_SECURITY=y
CONFIG_JFS_DEBUG=y
CONFIG_JFS_STATISTICS=y
CONFIG_FS_POSIX_ACL=y
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_XFS_RT=y
CONFIG_XFS_DEBUG=y
CONFIG_OCFS2_FS=y
CONFIG_OCFS2_FS_O2CB=y
CONFIG_OCFS2_FS_STATS=y
CONFIG_OCFS2_DEBUG_MASKLOG=y
CONFIG_OCFS2_DEBUG_FS=y
CONFIG_OCFS2_FS_POSIX_ACL=y
CONFIG_BTRFS_FS=y
CONFIG_BTRFS_FS_POSIX_ACL=y
CONFIG_NILFS2_FS=y
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
CONFIG_PRINT_QUOTA_WARNING=y
CONFIG_QUOTA_TREE=y
CONFIG_QFMT_V1=y
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
CONFIG_AUTOFS_FS=y
# CONFIG_AUTOFS4_FS is not set
CONFIG_FUSE_FS=y
CONFIG_CUSE=y

#
# Caches
#
CONFIG_FSCACHE=y
CONFIG_FSCACHE_STATS=y
CONFIG_FSCACHE_HISTOGRAM=y
# CONFIG_FSCACHE_DEBUG is not set
CONFIG_CACHEFILES=y
# CONFIG_CACHEFILES_DEBUG is not set
# CONFIG_CACHEFILES_HISTOGRAM is not set

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
CONFIG_UDF_FS=y
CONFIG_UDF_NLS=y

#
# DOS/FAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
CONFIG_NTFS_FS=y
CONFIG_NTFS_DEBUG=y
CONFIG_NTFS_RW=y

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=y
CONFIG_MISC_FILESYSTEMS=y
CONFIG_ADFS_FS=y
CONFIG_ADFS_FS_RW=y
# CONFIG_AFFS_FS is not set
CONFIG_ECRYPT_FS=y
CONFIG_HFS_FS=y
CONFIG_HFSPLUS_FS=y
# CONFIG_BEFS_FS is not set
CONFIG_BFS_FS=y
CONFIG_EFS_FS=y
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
CONFIG_VXFS_FS=y
CONFIG_MINIX_FS=y
# CONFIG_OMFS_FS is not set
CONFIG_HPFS_FS=y
CONFIG_QNX4FS_FS=y
CONFIG_ROMFS_FS=y
CONFIG_ROMFS_BACKED_BY_BLOCK=y
# CONFIG_ROMFS_BACKED_BY_MTD is not set
# CONFIG_ROMFS_BACKED_BY_BOTH is not set
CONFIG_ROMFS_ON_BLOCK=y
CONFIG_SYSV_FS=y
# CONFIG_UFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
# CONFIG_NFS_V3_ACL is not set
# CONFIG_NFS_V4 is not set
# CONFIG_ROOT_NFS is not set
CONFIG_NFS_FSCACHE=y
# CONFIG_NFSD is not set
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_EXPORTFS=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
CONFIG_RPCSEC_GSS_KRB5=y
CONFIG_RPCSEC_GSS_SPKM3=y
CONFIG_SMB_FS=y
# CONFIG_SMB_NLS_DEFAULT is not set
CONFIG_CIFS=y
CONFIG_CIFS_STATS=y
# CONFIG_CIFS_STATS2 is not set
CONFIG_CIFS_WEAK_PW_HASH=y
CONFIG_CIFS_UPCALL=y
CONFIG_CIFS_XATTR=y
CONFIG_CIFS_POSIX=y
CONFIG_CIFS_DEBUG2=y
CONFIG_CIFS_DFS_UPCALL=y
CONFIG_CIFS_EXPERIMENTAL=y
CONFIG_NCP_FS=y
# CONFIG_NCPFS_PACKET_SIGNING is not set
CONFIG_NCPFS_IOCTL_LOCKING=y
# CONFIG_NCPFS_STRONG is not set
# CONFIG_NCPFS_NFS_NS is not set
CONFIG_NCPFS_OS2_NS=y
CONFIG_NCPFS_SMALLDOS=y
# CONFIG_NCPFS_NLS is not set
CONFIG_NCPFS_EXTRAS=y
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
CONFIG_ACORN_PARTITION=y
# CONFIG_ACORN_PARTITION_CUMANA is not set
# CONFIG_ACORN_PARTITION_EESOX is not set
CONFIG_ACORN_PARTITION_ICS=y
# CONFIG_ACORN_PARTITION_ADFS is not set
CONFIG_ACORN_PARTITION_POWERTEC=y
CONFIG_ACORN_PARTITION_RISCIX=y
# CONFIG_OSF_PARTITION is not set
CONFIG_AMIGA_PARTITION=y
CONFIG_ATARI_PARTITION=y
CONFIG_MAC_PARTITION=y
CONFIG_MSDOS_PARTITION=y
CONFIG_BSD_DISKLABEL=y
CONFIG_MINIX_SUBPARTITION=y
CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_UNIXWARE_DISKLABEL=y
CONFIG_LDM_PARTITION=y
CONFIG_LDM_DEBUG=y
CONFIG_SGI_PARTITION=y
CONFIG_ULTRIX_PARTITION=y
CONFIG_SUN_PARTITION=y
CONFIG_KARMA_PARTITION=y
CONFIG_EFI_PARTITION=y
CONFIG_SYSV68_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
# CONFIG_NLS_CODEPAGE_437 is not set
CONFIG_NLS_CODEPAGE_737=y
CONFIG_NLS_CODEPAGE_775=y
CONFIG_NLS_CODEPAGE_850=y
# CONFIG_NLS_CODEPAGE_852 is not set
CONFIG_NLS_CODEPAGE_855=y
CONFIG_NLS_CODEPAGE_857=y
CONFIG_NLS_CODEPAGE_860=y
CONFIG_NLS_CODEPAGE_861=y
CONFIG_NLS_CODEPAGE_862=y
CONFIG_NLS_CODEPAGE_863=y
CONFIG_NLS_CODEPAGE_864=y
CONFIG_NLS_CODEPAGE_865=y
CONFIG_NLS_CODEPAGE_866=y
CONFIG_NLS_CODEPAGE_869=y
CONFIG_NLS_CODEPAGE_936=y
CONFIG_NLS_CODEPAGE_950=y
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
CONFIG_NLS_CODEPAGE_874=y
CONFIG_NLS_ISO8859_8=y
# CONFIG_NLS_CODEPAGE_1250 is not set
CONFIG_NLS_CODEPAGE_1251=y
# CONFIG_NLS_ASCII is not set
# CONFIG_NLS_ISO8859_1 is not set
CONFIG_NLS_ISO8859_2=y
CONFIG_NLS_ISO8859_3=y
CONFIG_NLS_ISO8859_4=y
# CONFIG_NLS_ISO8859_5 is not set
CONFIG_NLS_ISO8859_6=y
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
CONFIG_NLS_ISO8859_14=y
CONFIG_NLS_ISO8859_15=y
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=y
# CONFIG_DLM is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
# CONFIG_ALLOW_WARNINGS is not set
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_SECTION_MISMATCH=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_SCHED_DEBUG=y
CONFIG_SCHEDSTATS=y
# CONFIG_SLUB_DEBUG_ON is not set
CONFIG_SLUB_STATS=y
CONFIG_STACKTRACE=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_ARCH_WANT_FRAME_POINTERS=y
CONFIG_FRAME_POINTER=y
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
CONFIG_LATENCYTOP=y
# CONFIG_SYSCTL_SYSCALL_CHECK is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FTRACE_NMI_ENTER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_RING_BUFFER=y
CONFIG_FTRACE_NMI_ENTER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SYSPROF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_FTRACE_SYSCALLS is not set
# CONFIG_BOOT_TRACER is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
CONFIG_POWER_TRACER=y
CONFIG_KSYM_TRACER=y
CONFIG_PROFILE_KSYM_TRACER=y
CONFIG_STACK_TRACER=y
CONFIG_KMEMTRACE=y
CONFIG_WORKQUEUE_TRACER=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_DYNAMIC_FTRACE=y
CONFIG_FUNCTION_PROFILER=y
CONFIG_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE_STARTUP_TEST is not set
CONFIG_MMIOTRACE=y
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
CONFIG_DYNAMIC_DEBUG=y
CONFIG_DMA_API_DEBUG=y
CONFIG_SAMPLES=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_STRICT_DEVMEM=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y
# CONFIG_4KSTACKS is not set
CONFIG_DOUBLEFAULT=y
CONFIG_IOMMU_STRESS=y
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
# CONFIG_IO_DELAY_0X80 is not set
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
CONFIG_IO_DELAY_NONE=y
CONFIG_DEFAULT_IO_DELAY_TYPE=3
# CONFIG_OPTIMIZE_INLINING is not set

#
# Security options
#
CONFIG_KEYS=y
CONFIG_KEYS_DEBUG_PROC_KEYS=y
CONFIG_SECURITY=y
CONFIG_SECURITYFS=y
CONFIG_SECURITY_NETWORK=y
# CONFIG_SECURITY_NETWORK_XFRM is not set
CONFIG_SECURITY_PATH=y
CONFIG_SECURITY_FILE_CAPABILITIES=y
CONFIG_INTEL_TXT=y
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_IMA is not set
CONFIG_XOR_BLOCKS=y
CONFIG_ASYNC_CORE=y
CONFIG_ASYNC_MEMCPY=y
CONFIG_ASYNC_XOR=y
CONFIG_ASYNC_PQ=y
CONFIG_ASYNC_RAID6_RECOV=y
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
# CONFIG_CRYPTO_FIPS is not set
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_PCOMP=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_GF128MUL=y
# CONFIG_CRYPTO_NULL is not set
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_CRYPTO_CRYPTD=y
CONFIG_CRYPTO_AUTHENC=y

#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set

#
# Block modes
#
CONFIG_CRYPTO_CBC=y
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_LRW=y
CONFIG_CRYPTO_PCBC=y
# CONFIG_CRYPTO_XTS is not set

#
# Hash modes
#
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
CONFIG_CRYPTO_VMAC=y

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_CRC32C_INTEL=y
CONFIG_CRYPTO_GHASH=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=y
CONFIG_CRYPTO_RMD128=y
CONFIG_CRYPTO_RMD160=y
CONFIG_CRYPTO_RMD256=y
CONFIG_CRYPTO_RMD320=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=y
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
CONFIG_CRYPTO_WP512=y

#
# Ciphers
#
CONFIG_CRYPTO_AES=y
CONFIG_CRYPTO_AES_586=y
CONFIG_CRYPTO_ANUBIS=y
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_BLOWFISH is not set
CONFIG_CRYPTO_CAMELLIA=y
CONFIG_CRYPTO_CAST5=y
# CONFIG_CRYPTO_CAST6 is not set
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_FCRYPT=y
# CONFIG_CRYPTO_KHAZAD is not set
CONFIG_CRYPTO_SALSA20=y
CONFIG_CRYPTO_SALSA20_586=y
CONFIG_CRYPTO_SEED=y
CONFIG_CRYPTO_SERPENT=y
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set
CONFIG_CRYPTO_TWOFISH_COMMON=y
CONFIG_CRYPTO_TWOFISH_586=y

#
# Compression
#
CONFIG_CRYPTO_DEFLATE=y
# CONFIG_CRYPTO_ZLIB is not set
# CONFIG_CRYPTO_LZO is not set

#
# Random Number Generation
#
CONFIG_CRYPTO_ANSI_CPRNG=y
# CONFIG_CRYPTO_HW is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set
CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_FIND_LAST_BIT=y
CONFIG_CRC_CCITT=y
# CONFIG_CRC16 is not set
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_NLATTR=y
CONFIG_FORCE_SUCCESSFUL_BUILD=y
CONFIG_FORCE_MINIMAL_CONFIG=y
CONFIG_FORCE_MINIMAL_CONFIG_PHYS=y
CONFIG_X86_32_ALWAYS_ON=y

Re: [PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully

[FUJITA Tomonori]

On Tue, 10 Nov 2009 12:55:55 +0100
Ingo Molnar <mingo@elte.hu> wrote:

> 
> hm, one of the swiotlb patches caused this bootup crash:

Sorry about that. I totally forgot about x86_32.

the following patch fixes this? Sorry that I'm away from the workplace
and can't test it.

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index a234e63..63eebee 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -129,6 +129,8 @@ void __init pci_iommu_alloc(void)
 #ifdef CONFIG_X86_64
 	/* free the range so iommu could get some range less than 4G */
 	dma32_free_bootmem();
+#else
+	dma_ops = &nommu_dma_ops;
 #endif
 	pci_swiotlb_init();
 	if (use_swiotlb)

Re: [PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully

[Yinghai Lu]

On Tue, Nov 10, 2009 at 3:19 AM, Ingo Molnar <mingo@elte.hu> wrote:
>
> * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
>
>> This patchset is against tip/master.
>>
>> The first version is:
>>
>> http://marc.info/?l=linux-kernel&m=125671300920411&w=2
>>
>> The changes since v1 are:
>>
>> - replaced Chris' bootmem patches with the 6/9 patch to implement
>>   free_bootmem_late in a simple way (thanks to Pekka).
>>
>> - fixed the bug to break 'iommu=soft' boot opiton (found by Joerg).
>>
>> - moved iommu_init_noop() to x86_init.c
>>
>> - added Muli's Acked-by to Calgary patch.
>>
>>
>> ==
>>  arch/ia64/kernel/pci-swiotlb.c   |    4 +-
>>  arch/powerpc/kernel/setup_32.c   |    2 +-
>>  arch/powerpc/kernel/setup_64.c   |    2 +-
>>  arch/x86/include/asm/amd_iommu.h |    2 -
>>  arch/x86/include/asm/calgary.h   |    2 -
>>  arch/x86/include/asm/gart.h      |    5 +---
>>  arch/x86/include/asm/iommu.h     |    1 -
>>  arch/x86/include/asm/x86_init.h  |    9 +++++++
>>  arch/x86/kernel/amd_iommu.c      |    2 +-
>>  arch/x86/kernel/amd_iommu_init.c |   19 +++-----------
>>  arch/x86/kernel/aperture_64.c    |    4 ++-
>>  arch/x86/kernel/pci-calgary_64.c |   19 ++++-----------
>>  arch/x86/kernel/pci-dma.c        |   27 ++++++++++-----------
>>  arch/x86/kernel/pci-gart_64.c    |   16 ++++-------
>>  arch/x86/kernel/pci-nommu.c      |    9 -------
>>  arch/x86/kernel/pci-swiotlb.c    |   10 +++----
>>  arch/x86/kernel/x86_init.c       |    5 ++++
>>  drivers/pci/dmar.c               |    7 ++++-
>>  drivers/pci/intel-iommu.c        |    4 +-
>>  include/linux/bootmem.h          |    1 +
>>  include/linux/dmar.h             |   10 -------
>>  include/linux/swiotlb.h          |    5 ++-
>>  lib/swiotlb.c                    |   49 +++++++++++++++++++++++++++++++------
>>  mm/bootmem.c                     |   24 ++++++++++++++++++
>>  24 files changed, 131 insertions(+), 107 deletions(-)
>
> Nice changes! I've applied them to tip:core/iommu (with the small build
> fix i mentioned in the previous mail) and will push them out later
> today.
>

this patch set will break some AMD system

amd 64 systems that
1. do not have  AGP
2. do not have IOMMU
3. mem > 4g
4. BIOS do not allocate  correct gart in NB.

will leave them to use SWIOTLB forcely.

following code that allocate some RAM as aperture will be called
anymore for them
        } else if (!valid_agp) {
                /* Do nothing */
        } else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
                   force_iommu ||
                   valid_agp ||
                   fallback_aper_force) {
                printk(KERN_INFO
                        "Your BIOS doesn't leave a aperture memory hole\n");
                printk(KERN_INFO
                        "Please enable the IOMMU option in the BIOS setup\n");
                printk(KERN_INFO
                        "This costs you %d MB of RAM\n",
                                32 << fallback_aper_order);

                aper_order = fallback_aper_order;
                aper_alloc = allocate_aperture();
                if (!aper_alloc) {
                        /*
                         * Could disable AGP and IOMMU here, but it's
                         * probably not worth it. But the later users
                         * cannot deal with bad apertures and turning
                         * on the aperture over memory causes very
                         * strange problems, so it's better to panic
                         * early.
                         */
                        panic("Not enough memory for aperture");
                }

also in

 void __init pci_iommu_alloc(void)
{
#ifdef CONFIG_X86_64
        /* free the range so iommu could get some range less than 4G */
        dma32_free_bootmem();
#endif
        if (pci_swiotlb_init())
                return;

        gart_iommu_hole_init();

        detect_calgary();

        detect_intel_iommu();

        /* needs to be called after gart_iommu_hole_init */
        amd_iommu_detect();
}

pci_swiotlb_init is stealing the preallocate range that is
gart_iommu_hole workaround.

so please move back swiotlb_init to the end.

there is no point to allocate swiotlb at first and then free it if
some iommu is there.

YH