From: Zhou Wang <wangzhou1@hisilicon.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
Jingoo Han <jg1.han@samsung.com>,
Pratyush Anand <pratyush.anand@gmail.com>,
Arnd Bergmann <arnd@arndb.de>, <gabriele.paoloni@huawei.com>,
<lorenzo.pieralisi@arm.com>, James Morse <james.morse@arm.com>,
<Liviu.Dudau@arm.com>, <thomas.petazzoni@free-electrons.com>,
Jason Cooper <jason@lakedaemon.net>, <robh@kernel.org>
Cc: <linux-pci@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <yuanzhichang@hisilicon.com>,
<zhudacai@hisilicon.com>, <zhangjukuo@huawei.com>,
<qiuzhenfa@hisilicon.com>, <liudongdong3@huawei.com>,
<qiujiang@huawei.com>, <kangfenglong@huawei.com>,
<liguozhu@hisilicon.com>
Subject: [PATCH v5 1/5] ARM/PCI: remove align_resource in pci_sys_data
Date: Sat, 25 Jul 2015 11:21:22 +0800 [thread overview]
Message-ID: <1437794486-21134-2-git-send-email-wangzhou1@hisilicon.com> (raw)
In-Reply-To: <1437794486-21134-1-git-send-email-wangzhou1@hisilicon.com>
From: Gabriele Paoloni <gabriele.paoloni@huawei.com>
This patch is needed in order to unify the PCIe designware framework for ARM and
ARM64 architectures. In the PCIe designware unification process we are calling
pci_create_root_bus() passing a "sysdata" parameter that is the same for both
ARM and ARM64 and is of type "struct pcie_port*". In the ARM case this will
cause a problem with the function pcibios_align_resource(); in fact this will
cast "dev->sysdata" to "struct pci_sys_data*", whereas designware had passed a
"struct pcie_port*" pointer.
This patch solves the issue by removing "align_resource" from "pci_sys_data"
struct and defining a static global function pointer in "bios32.c"
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
---
arch/arm/include/asm/mach/pci.h | 5 -----
arch/arm/kernel/bios32.c | 12 ++++++++----
2 files changed, 8 insertions(+), 9 deletions(-)
diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h
index 28b9bb3..8a4e4de 100644
--- a/arch/arm/include/asm/mach/pci.h
+++ b/arch/arm/include/asm/mach/pci.h
@@ -58,11 +58,6 @@ struct pci_sys_data {
/* IRQ mapping */
int (*map_irq)(const struct pci_dev *, u8, u8);
/* Resource alignement requirements */
- resource_size_t (*align_resource)(struct pci_dev *dev,
- const struct resource *res,
- resource_size_t start,
- resource_size_t size,
- resource_size_t align);
void *private_data; /* platform controller private data */
};
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index fcbbbb1..4cdc64d 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -17,6 +17,11 @@
#include <asm/mach/pci.h>
static int debug_pci;
+static resource_size_t (*align_resource)(struct pci_dev *dev,
+ const struct resource *res,
+ resource_size_t start,
+ resource_size_t size,
+ resource_size_t align) = NULL;
#ifdef CONFIG_PCI_MSI
struct msi_controller *pcibios_msi_controller(struct pci_dev *dev)
@@ -468,7 +473,7 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw,
sys->busnr = busnr;
sys->swizzle = hw->swizzle;
sys->map_irq = hw->map_irq;
- sys->align_resource = hw->align_resource;
+ align_resource = hw->align_resource;
INIT_LIST_HEAD(&sys->resources);
if (hw->private_data)
@@ -589,7 +594,6 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
- struct pci_sys_data *sys = dev->sysdata;
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO && start & 0x300)
@@ -597,8 +601,8 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
start = (start + align - 1) & ~(align - 1);
- if (sys->align_resource)
- return sys->align_resource(dev, res, start, size, align);
+ if (align_resource)
+ return align_resource(dev, res, start, size, align);
return start;
}
--
1.9.1
next prev parent reply other threads:[~2015-07-25 3:15 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-25 3:21 [PATCH v5 0/5] PCI: hisi: Add PCIe host support for HiSilicon SoC Hip05 Zhou Wang
2015-07-25 3:21 ` Zhou Wang [this message]
2015-07-28 7:17 ` [PATCH v5 1/5] ARM/PCI: remove align_resource in pci_sys_data Zhou Wang
2015-07-28 17:44 ` Lorenzo Pieralisi
2015-07-30 22:48 ` Rob Herring
2015-07-31 7:57 ` Gabriele Paoloni
2015-07-25 3:21 ` [PATCH v5 2/5] PCI: designware: Add ARM64 support Zhou Wang
2015-07-28 6:21 ` Zhou Wang
2015-08-04 9:34 ` James Morse
2015-08-04 10:23 ` Gabriele Paoloni
2015-08-04 10:40 ` James Morse
2015-08-04 10:43 ` Gabriele Paoloni
2015-08-05 1:40 ` Zhou Wang
2015-07-29 17:24 ` Lorenzo Pieralisi
2015-07-30 3:17 ` Zhou Wang
2015-07-25 3:21 ` [PATCH v5 3/5] PCI: hisi: Add PCIe host support for HiSilicon SoC Hip05 Zhou Wang
2015-07-25 3:21 ` [PATCH v5 4/5] Documentation: DT: Add HiSilicon PCIe host binding Zhou Wang
2015-07-28 7:28 ` Zhou Wang
2015-07-25 3:21 ` [PATCH v5 5/5] MAINTAINERS: Add pcie-hisi maintainer Zhou Wang
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