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Add fixes for known AMD bootup issue

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This commit is contained in:
Laura Abbott 2017-12-06 10:15:02 -08:00
parent 5919ce3742
commit 24c675ac8b
4 changed files with 134 additions and 0 deletions
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38
0001-x86-PCI-fix-infinity-loop-in-search-for-64bit-BAR-pl.patch Normal file
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@ -0,0 +1,38 @@
From 91990a4f966e1862f9747072c4f46946169e2d8b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Tue, 21 Nov 2017 11:20:00 +0100
Subject: [PATCH 1/3] x86/PCI: fix infinity loop in search for 64bit BAR
placement
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Break the loop if we can't find some address space for a 64bit BAR.
Signed-off-by: Christian König <christian.koenig@amd.com>
---
arch/x86/pci/fixup.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index e59378bf37d9..e857b3ac5755 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -695,8 +695,13 @@ static void pci_amd_enable_64bit_bar(struct pci_dev *dev)
res->end = 0xfd00000000ull - 1;
/* Just grab the free area behind system memory for this */
- while ((conflict = request_resource_conflict(&iomem_resource, res)))
+ while ((conflict = request_resource_conflict(&iomem_resource, res))) {
+ if (conflict->end >= res->end) {
+ kfree(res);
+ return;
+ }
res->start = conflict->end + 1;
+ }
dev_info(&dev->dev, "adding root bus resource %pR\n", res);
--
2.11.0

58
0002-x86-PCI-only-enable-a-64bit-BAR-on-single-socket-AMD.patch Normal file
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@ -0,0 +1,58 @@
From 21ae889eaa7330b57f17cc86b6d0239300eb3f95 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Tue, 21 Nov 2017 11:08:33 +0100
Subject: [PATCH 2/3] x86/PCI: only enable a 64bit BAR on single socket AMD
Family 15h systems
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When we have a multi socket system each CPU core needs the same setup. Since
this is tricky to do in the fixup code disable enabling a 64bit BAR on multi
socket systems for now.
Signed-off-by: Christian König <christian.koenig@amd.com>
---
arch/x86/pci/fixup.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index e857b3ac5755..c817ab85dc82 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -664,6 +664,16 @@ static void pci_amd_enable_64bit_bar(struct pci_dev *dev)
unsigned i;
u32 base, limit, high;
struct resource *res, *conflict;
+ struct pci_dev *other;
+
+ /* Check that we are the only device of that type */
+ other = pci_get_device(dev->vendor, dev->device, NULL);
+ if (other != dev ||
+ (other = pci_get_device(dev->vendor, dev->device, other))) {
+ /* This is a multi socket system, don't touch it for now */
+ pci_dev_put(other);
+ return;
+ }
for (i = 0; i < 8; i++) {
pci_read_config_dword(dev, AMD_141b_MMIO_BASE(i), &base);
@@ -718,10 +728,10 @@ static void pci_amd_enable_64bit_bar(struct pci_dev *dev)
pci_bus_add_resource(dev->bus, res, 0);
}
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1401, pci_amd_enable_64bit_bar);
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x141b, pci_amd_enable_64bit_bar);
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1571, pci_amd_enable_64bit_bar);
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x15b1, pci_amd_enable_64bit_bar);
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1601, pci_amd_enable_64bit_bar);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1401, pci_amd_enable_64bit_bar);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x141b, pci_amd_enable_64bit_bar);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1571, pci_amd_enable_64bit_bar);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15b1, pci_amd_enable_64bit_bar);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1601, pci_amd_enable_64bit_bar);
#endif
--
2.11.0

33
0003-x86-PCI-limit-the-size-of-the-64bit-BAR-to-256GB.patch Normal file
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@ -0,0 +1,33 @@
From e5d5c9682aa02a6b9c0c6bd446d433b924441679 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Tue, 28 Nov 2017 10:02:35 +0100
Subject: [PATCH 3/3] x86/PCI: limit the size of the 64bit BAR to 256GB
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This avoids problems with Xen which hides some memory resources from the
OS and potentially also allows memory hotplug while this fixup is
enabled.
Signed-off-by: Christian König <christian.koenig@amd.com>
---
arch/x86/pci/fixup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index c817ab85dc82..149adbc7f2a3 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -701,7 +701,7 @@ static void pci_amd_enable_64bit_bar(struct pci_dev *dev)
res->name = "PCI Bus 0000:00";
res->flags = IORESOURCE_PREFETCH | IORESOURCE_MEM |
IORESOURCE_MEM_64 | IORESOURCE_WINDOW;
- res->start = 0x100000000ull;
+ res->start = 0xbd00000000ull;
res->end = 0xfd00000000ull - 1;
/* Just grab the free area behind system memory for this */
--
2.11.0

5
kernel.spec
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@ -636,6 +636,11 @@ Patch630: 0001-HID-multitouch-Properly-deal-with-Win8-PTP-reports-w.patch
Patch631: 0002-HID-multitouch-Only-look-at-non-touch-fields-in-firs.patch
Patch632: 0003-HID-multitouch-Combine-all-left-button-events-in-a-f.patch
# Reported upstream
Patch633: 0001-x86-PCI-fix-infinity-loop-in-search-for-64bit-BAR-pl.patch
Patch634: 0002-x86-PCI-only-enable-a-64bit-BAR-on-single-socket-AMD.patch
Patch635: 0003-x86-PCI-limit-the-size-of-the-64bit-BAR-to-256GB.patch
# END OF PATCH DEFINITIONS
%endif