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Date: Thu, 7 Apr 2016 17:16:05 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
David Miller <davem@...emloft.net>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>,
Yijing Wang <wangyijing@...wei.com>,
Khalid Aziz <khalid.aziz@...cle.com>,
linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
Yinghai Lu <yinghai@...nel.org>,
Michal Simek <monstr@...str.eu>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>,
Arnd Bergmann <arnd@...db.de>, linuxppc-dev@...ts.ozlabs.org,
linux-arch@...r.kernel.org
Subject: [PATCH v11 52/60] PCI: Unify skip_ioresource_align()
There are powerpc generic version and x86 local version for
skip_ioresource_align().
Move the powerpc version to setup-bus.c, and kill x86 local version.
Also kill dummy version in microblaze.
Cc: Michal Simek <monstr@...str.eu>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: linux-arch@...r.kernel.org
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Michael Ellerman <mpe@...erman.id.au>
---
arch/powerpc/kernel/pci-common.c | 11 +----------
arch/x86/include/asm/pci_x86.h | 1 -
arch/x86/pci/common.c | 4 ++--
arch/x86/pci/i386.c | 11 +----------
drivers/pci/setup-bus.c | 9 +++++++++
include/linux/pci.h | 2 ++
6 files changed, 15 insertions(+), 23 deletions(-)
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 0f7a60f..2a7f4fd 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1053,15 +1053,6 @@ void pci_fixup_cardbus(struct pci_bus *bus)
pcibios_setup_bus_devices(bus);
}
-
-static int skip_isa_ioresource_align(struct pci_dev *dev)
-{
- if (pci_has_flag(PCI_CAN_SKIP_ISA_ALIGN) &&
- !(dev->bus->bridge_ctl & PCI_BRIDGE_CTL_ISA))
- return 1;
- return 0;
-}
-
/*
* We need to avoid collisions with `mirrored' VGA ports
* and other strange ISA hardware, so we always want the
@@ -1082,7 +1073,7 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
- if (skip_isa_ioresource_align(dev))
+ if (skip_isa_ioresource_align(dev->bus))
return start;
if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index d08eacd2..d1f919e 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -28,7 +28,6 @@ do { \
#define PCI_ASSIGN_ROMS 0x1000
#define PCI_BIOS_IRQ_SCAN 0x2000
#define PCI_ASSIGN_ALL_BUSSES 0x4000
-#define PCI_CAN_SKIP_ISA_ALIGN 0x8000
#define PCI_USE__CRS 0x10000
#define PCI_CHECK_ENABLE_AMD_MMCONF 0x20000
#define PCI_HAS_IO_ECS 0x40000
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 381a43c..09a16b7 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -82,7 +82,7 @@ DEFINE_RAW_SPINLOCK(pci_config_lock);
static int __init can_skip_ioresource_align(const struct dmi_system_id *d)
{
- pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
+ pci_add_flags(PCI_CAN_SKIP_ISA_ALIGN);
printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident);
return 0;
}
@@ -618,7 +618,7 @@ char *__init pcibios_setup(char *str)
pci_routeirq = 1;
return NULL;
} else if (!strcmp(str, "skip_isa_align")) {
- pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
+ pci_add_flags(PCI_CAN_SKIP_ISA_ALIGN);
return NULL;
} else if (!strcmp(str, "noioapicquirk")) {
noioapicquirk = 1;
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 0a9f2ca..cf296f5 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -128,15 +128,6 @@ static void __init pcibios_fw_addr_list_del(void)
pcibios_fw_addr_done = true;
}
-static int
-skip_isa_ioresource_align(struct pci_dev *dev) {
-
- if ((pci_probe & PCI_CAN_SKIP_ISA_ALIGN) &&
- !(dev->bus->bridge_ctl & PCI_BRIDGE_CTL_ISA))
- return 1;
- return 0;
-}
-
/*
* We need to avoid collisions with `mirrored' VGA ports
* and other strange ISA hardware, so we always want the
@@ -158,7 +149,7 @@ pcibios_align_resource(void *data, const struct resource *res,
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
- if (skip_isa_ioresource_align(dev))
+ if (skip_isa_ioresource_align(dev->bus))
return start;
if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 28dfd8e..5ba4bf5 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1150,6 +1150,15 @@ static resource_size_t window_alignment(struct pci_bus *bus,
return max(align, arch_align);
}
+int skip_isa_ioresource_align(struct pci_bus *bus)
+{
+ if (pci_has_flag(PCI_CAN_SKIP_ISA_ALIGN) &&
+ !(bus->bridge_ctl & PCI_BRIDGE_CTL_ISA))
+ return 1;
+
+ return 0;
+}
+
static resource_size_t size_aligned_for_isa(resource_size_t size)
{
/*
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 979be25..d7b1ceb 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -765,6 +765,8 @@ static inline void pci_add_flags(int flags) { pci_flags |= flags; }
static inline void pci_clear_flags(int flags) { pci_flags &= ~flags; }
static inline int pci_has_flag(int flag) { return pci_flags & flag; }
+int skip_isa_ioresource_align(struct pci_bus *bus);
+
void pcie_bus_configure_settings(struct pci_bus *bus);
enum pcie_bus_config_types {
--
1.8.4.5
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