diff for duplicates of <585C815B.4030000@hisilicon.com> diff --git a/a/1.txt b/N1/1.txt index ecab391..6952097 100644 --- a/a/1.txt +++ b/N1/1.txt @@ -1,228 +1,300 @@ -SGnvvIxNaW5nLAoKCk9uIDIwMTYvMTIvMjIgMTY6MTUsIE1pbmcgTGVpIHdyb3RlOgo+IEhpIEd1 -eXMsCj4gCj4gT24gVHVlLCBOb3YgOCwgMjAxNiBhdCAxMTo0NyBBTSwgemhpY2hhbmcueXVhbgo+ -IDx5dWFuemhpY2hhbmdAaGlzaWxpY29uLmNvbT4gd3JvdGU6Cj4+IEZvciBhcm02NCwgdGhlcmUg -aXMgbm8gSS9PIHNwYWNlIGFzIG90aGVyIGFyY2hpdGVjdHVyYWwgcGxhdGZvcm1zLCBzdWNoIGFz -Cj4+IFg4Ni4gTW9zdCBJL08gYWNjZXNzZXMgYXJlIGFjaGlldmVkIGJhc2VkIG9uIE1NSU8uIEJ1 -dCBmb3Igc29tZSBhcm02NCBTb0NzLAo+PiBzdWNoIGFzIEhpcDA2LCB3aGVuIGFjY2Vzc2luZyBz -b21lIGxlZ2FjeSBJU0EgZGV2aWNlcyBjb25uZWN0ZWQgdG8gTFBDLCB0aG9zZQo+PiBrbm93biBw -b3J0IGFkZHJlc3NlcyBhcmUgdXNlZCB0byBjb250cm9sIHRoZSBjb3JyZXNwb25kaW5nIHRhcmdl -dCBkZXZpY2VzLCBmb3IKPj4gZXhhbXBsZSwgMHgyZjggaXMgZm9yIFVBUlQsIDB4ZTQgaXMgZm9y -IGlwbWktYnQuIEl0IGlzIGRpZmZlcmVudCBmcm9tIHRoZQo+PiBub3JtYWwgTU1JTyBtb2RlIGlu 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-bGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlz -dHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK +Hi，Ming, + + +On 2016/12/22 16:15, Ming Lei wrote: +> Hi Guys, +> +> On Tue, Nov 8, 2016 at 11:47 AM, zhichang.yuan +> <yuanzhichang@hisilicon.com> wrote: +>> For arm64, there is no I/O space as other architectural platforms, such as +>> X86. Most I/O accesses are achieved based on MMIO. But for some arm64 SoCs, +>> such as Hip06, when accessing some legacy ISA devices connected to LPC, those +>> known port addresses are used to control the corresponding target devices, for +>> example, 0x2f8 is for UART, 0xe4 is for ipmi-bt. It is different from the +>> normal MMIO mode in using. +>> +>> To drive these devices, this patch introduces a method named indirect-IO. +>> In this method the in/out pair in arch/arm64/include/asm/io.h will be +>> redefined. When upper layer drivers call in/out with those known legacy port +>> addresses to access the peripherals, the hooking functions corrresponding to +>> those target peripherals will be called. Through this way, those upper layer +>> drivers which depend on in/out can run on Hip06 without any changes. +>> +>> Cc: Catalin Marinas <catalin.marinas@arm.com> +>> Cc: Will Deacon <will.deacon@arm.com> +>> Signed-off-by: zhichang.yuan <yuanzhichang@hisilicon.com> +>> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> +>> --- +>> arch/arm64/Kconfig | 6 +++ +>> arch/arm64/include/asm/extio.h | 94 ++++++++++++++++++++++++++++++++++++++++++ +>> arch/arm64/include/asm/io.h | 29 +++++++++++++ +>> arch/arm64/kernel/Makefile | 1 + +>> arch/arm64/kernel/extio.c | 27 ++++++++++++ +>> 5 files changed, 157 insertions(+) +> +> When I applied these three patches against current linus tree and +> enable CONFIG_HISILICON_LPC, the following build failure[1] is +> triggered when running 'make modules'. +> + +Thanks for your report! + +This patch has compilation issue on some architectures, sorry for the inconvenience caused by this! +The ongoing v6 will solve these issues. +I will trace this failure and provide a fix if you can not wait for the next version. + +Could you send me your .config in private? I don't want to bother all the hacker in the mail-list. + + +Thanks, +Zhichang + +> +> Thanks, +> Ming +> +> [1] 'make modules' failure log +> +> Building modules, stage 2. +> MODPOST 2260 modules +> ERROR: "inb" [drivers/watchdog/wdt_pci.ko] undefined! +> ERROR: "outb" [drivers/watchdog/wdt_pci.ko] undefined! +> ERROR: "outb" [drivers/watchdog/pcwd_pci.ko] undefined! +> ERROR: "inb" [drivers/watchdog/pcwd_pci.ko] undefined! +> ERROR: "outw" [drivers/video/vgastate.ko] undefined! +> ERROR: "outb" [drivers/video/vgastate.ko] undefined! +> ERROR: "inb" [drivers/video/vgastate.ko] undefined! +> ERROR: "outw" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "outb" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "outw" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "outb" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/tdfxfb.ko] undefined! +> ..... +> ERROR: "inb" [drivers/ata/pata_cmd64x.ko] undefined! +> ERROR: "inb" [drivers/ata/pata_artop.ko] undefined! +> scripts/Makefile.modpost:91: recipe for target '__modpost' failed +> make[1]: *** [__modpost] Error 1 +> Makefile:1196: recipe for target 'modules' failed +> make: *** [modules] Error 2 +> +> +>> create mode 100644 arch/arm64/include/asm/extio.h +>> create mode 100644 arch/arm64/kernel/extio.c +>> +>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig +>> index 969ef88..b44070b 100644 +>> --- a/arch/arm64/Kconfig +>> +++ b/arch/arm64/Kconfig +>> @@ -163,6 +163,12 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN +>> config ARCH_MMAP_RND_COMPAT_BITS_MAX +>> default 16 +>> +>> +config ARM64_INDIRECT_PIO +>> + bool "access peripherals with legacy I/O port" +>> + help +>> + Support special accessors for ISA I/O devices. This is needed for +>> + SoCs that do not support standard read/write for the ISA range. +>> + +>> config NO_IOPORT_MAP +>> def_bool y if !PCI +>> +>> diff --git a/arch/arm64/include/asm/extio.h b/arch/arm64/include/asm/extio.h +>> new file mode 100644 +>> index 0000000..6ae0787 +>> --- /dev/null +>> +++ b/arch/arm64/include/asm/extio.h +>> @@ -0,0 +1,94 @@ +>> +/* +>> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved. +>> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com> +>> + * +>> + * This program is free software; you can redistribute it and/or modify +>> + * it under the terms of the GNU General Public License version 2 as +>> + * published by the Free Software Foundation. +>> + * +>> + * This program is distributed in the hope that it will be useful, +>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of +>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +>> + * GNU General Public License for more details. +>> + * +>> + * You should have received a copy of the GNU General Public License +>> + * along with this program. If not, see <http://www.gnu.org/licenses/>. +>> + */ +>> + +>> +#ifndef __LINUX_EXTIO_H +>> +#define __LINUX_EXTIO_H +>> + +>> +struct extio_ops { +>> + unsigned long start;/* inclusive, sys io addr */ +>> + unsigned long end;/* inclusive, sys io addr */ +>> + +>> + u64 (*pfin)(void *devobj, unsigned long ptaddr, size_t dlen); +>> + void (*pfout)(void *devobj, unsigned long ptaddr, u32 outval, +>> + size_t dlen); +>> + u64 (*pfins)(void *devobj, unsigned long ptaddr, void *inbuf, +>> + size_t dlen, unsigned int count); +>> + void (*pfouts)(void *devobj, unsigned long ptaddr, +>> + const void *outbuf, size_t dlen, +>> + unsigned int count); +>> + void *devpara; +>> +}; +>> + +>> +extern struct extio_ops *arm64_extio_ops; +>> + +>> +#define DECLARE_EXTIO(bw, type) \ +>> +extern type in##bw(unsigned long addr); \ +>> +extern void out##bw(type value, unsigned long addr); \ +>> +extern void ins##bw(unsigned long addr, void *buffer, unsigned int count);\ +>> +extern void outs##bw(unsigned long addr, const void *buffer, unsigned int count); +>> + +>> +#define BUILD_EXTIO(bw, type) \ +>> +type in##bw(unsigned long addr) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + return read##bw(PCI_IOBASE + addr); \ +>> + return arm64_extio_ops->pfin ? \ +>> + arm64_extio_ops->pfin(arm64_extio_ops->devpara, \ +>> + addr, sizeof(type)) : -1; \ +>> +} \ +>> + \ +>> +void out##bw(type value, unsigned long addr) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + write##bw(value, PCI_IOBASE + addr); \ +>> + else \ +>> + if (arm64_extio_ops->pfout) \ +>> + arm64_extio_ops->pfout(arm64_extio_ops->devpara,\ +>> + addr, value, sizeof(type)); \ +>> +} \ +>> + \ +>> +void ins##bw(unsigned long addr, void *buffer, unsigned int count) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + reads##bw(PCI_IOBASE + addr, buffer, count); \ +>> + else \ +>> + if (arm64_extio_ops->pfins) \ +>> + arm64_extio_ops->pfins(arm64_extio_ops->devpara,\ +>> + addr, buffer, sizeof(type), count); \ +>> +} \ +>> + \ +>> +void outs##bw(unsigned long addr, const void *buffer, unsigned int count) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + writes##bw(PCI_IOBASE + addr, buffer, count); \ +>> + else \ +>> + if (arm64_extio_ops->pfouts) \ +>> + arm64_extio_ops->pfouts(arm64_extio_ops->devpara,\ +>> + addr, buffer, sizeof(type), count); \ +>> +} +>> + +>> +static inline void arm64_set_extops(struct extio_ops *ops) +>> +{ +>> + if (ops) +>> + WRITE_ONCE(arm64_extio_ops, ops); +>> +} +>> + +>> +#endif /* __LINUX_EXTIO_H*/ +>> diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h +>> index 0bba427..136735d 100644 +>> --- a/arch/arm64/include/asm/io.h +>> +++ b/arch/arm64/include/asm/io.h +>> @@ -31,6 +31,7 @@ +>> #include <asm/early_ioremap.h> +>> #include <asm/alternative.h> +>> #include <asm/cpufeature.h> +>> +#include <asm/extio.h> +>> +>> #include <xen/xen.h> +>> +>> @@ -149,6 +150,34 @@ static inline u64 __raw_readq(const volatile void __iomem *addr) +>> #define IO_SPACE_LIMIT (PCI_IO_SIZE - 1) +>> #define PCI_IOBASE ((void __iomem *)PCI_IO_START) +>> +>> + +>> +/* +>> + * redefine the in(s)b/out(s)b for indirect-IO. +>> + */ +>> +#ifdef CONFIG_ARM64_INDIRECT_PIO +>> +#define inb inb +>> +#define outb outb +>> +#define insb insb +>> +#define outsb outsb +>> +/* external declaration */ +>> +DECLARE_EXTIO(b, u8) +>> + +>> +#define inw inw +>> +#define outw outw +>> +#define insw insw +>> +#define outsw outsw +>> + +>> +DECLARE_EXTIO(w, u16) +>> + +>> +#define inl inl +>> +#define outl outl +>> +#define insl insl +>> +#define outsl outsl +>> + +>> +DECLARE_EXTIO(l, u32) +>> +#endif +>> + +>> + +>> /* +>> * String version of I/O memory access operations. +>> */ +>> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile +>> index 7d66bba..60e0482 100644 +>> --- a/arch/arm64/kernel/Makefile +>> +++ b/arch/arm64/kernel/Makefile +>> @@ -31,6 +31,7 @@ arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \ +>> sys_compat.o entry32.o +>> arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o +>> arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o +>> +arm64-obj-$(CONFIG_ARM64_INDIRECT_PIO) += extio.o +>> arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o +>> arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o +>> arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o +>> diff --git a/arch/arm64/kernel/extio.c b/arch/arm64/kernel/extio.c +>> new file mode 100644 +>> index 0000000..647b3fa +>> --- /dev/null +>> +++ b/arch/arm64/kernel/extio.c +>> @@ -0,0 +1,27 @@ +>> +/* +>> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved. +>> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com> +>> + * +>> + * This program is free software; you can redistribute it and/or modify +>> + * it under the terms of the GNU General Public License version 2 as +>> + * published by the Free Software Foundation. +>> + * +>> + * This program is distributed in the hope that it will be useful, +>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of +>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +>> + * GNU General Public License for more details. +>> + * +>> + * You should have received a copy of the GNU General Public License +>> + * along with this program. If not, see <http://www.gnu.org/licenses/>. +>> + */ +>> + +>> +#include <linux/io.h> +>> + +>> +struct extio_ops *arm64_extio_ops; +>> + +>> + +>> +BUILD_EXTIO(b, u8) +>> + +>> +BUILD_EXTIO(w, u16) +>> + +>> +BUILD_EXTIO(l, u32) +>> -- +>> 1.9.1 +>> +> +> +> diff --git a/a/content_digest b/N1/content_digest index d3eaabc..d2ac1db 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -5,258 +5,327 @@ "Subject\0Re: [PATCH V5 1/3] ARM64 LPC: Indirect ISA port IO introduced\0" "Date\0Fri, 23 Dec 2016 09:43:55 +0800\0" "To\0Ming Lei <tom.leiming@gmail.com>\0" - "Cc\0Mark Rutland <mark.rutland@arm.com>" - gabriele.paoloni@huawei.com - Benjamin Herrenschmidt <benh@kernel.crashing.org> + "Cc\0Catalin Marinas <catalin.marinas@arm.com>" Will Deacon <will.deacon@arm.com> - linuxarm@huawei.com - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> + Rob Herring <robh+dt@kernel.org> + Bjorn Helgaas <bhelgaas@google.com> + Mark Rutland <mark.rutland@arm.com> + Olof Johansson <olof@lixom.net> Arnd Bergmann <arnd@arndb.de> - xuwei5@hisilicon.com - linux-serial@vger.kernel.org - Catalin Marinas <catalin.marinas@arm.com> + linux-arm-kernel <linux-arm-kernel@lists.infradead.org> + Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> + Linux Kernel Mailing List <linux-kernel@vger.kernel.org> + linuxarm@huawei.com devicetree@vger.kernel.org <devicetree@vger.kernel.org> + linux-pci@vger.kernel.org <linux-pci@vger.kernel.org> + linux-serial@vger.kernel.org minyard@acm.org + Benjamin Herrenschmidt <benh@kernel.crashing.org> Liviu Dudau <liviu.dudau@arm.com> - john.garry@huawei.com zourongrong@gmail.com - Rob Herring <robh+dt@kernel.org> - Bjorn Helgaas <bhelgaas@google.com> - kantyzc@163.com - zhichang.yuan02@gmail.com - linux-arm-kernel <linux-arm-kernel@lists.infradead.org> - linux-pci@vger.kernel.org <linux-pci@vger.kernel.org> - Linux Kernel Mailing List <linux-kernel@vger.kernel.org> - " Olof Johansson <olof@lixom.net>\0" + john.garry@huawei.com + " gabriele.paoloni@huawei.com\0" "\00:1\0" "b\0" - "SGnvvIxNaW5nLAoKCk9uIDIwMTYvMTIvMjIgMTY6MTUsIE1pbmcgTGVpIHdyb3RlOgo+IEhpIEd1\n" - 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"Cj4+ICtzdHJ1Y3QgZXh0aW9fb3BzICphcm02NF9leHRpb19vcHM7Cj4+ICsKPj4gKwo+PiArQlVJ\n" - "TERfRVhUSU8oYiwgdTgpCj4+ICsKPj4gK0JVSUxEX0VYVElPKHcsIHUxNikKPj4gKwo+PiArQlVJ\n" - "TERfRVhUSU8obCwgdTMyKQo+PiAtLQo+PiAxLjkuMQo+Pgo+IAo+IAo+IAoKCl9fX19fX19fX19f\n" - "X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFp\n" - "bGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlz\n" - dHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK + "Hi\357\274\214Ming,\n" + "\n" + "\n" + "On 2016/12/22 16:15, Ming Lei wrote:\n" + "> Hi Guys,\n" + "> \n" + "> On Tue, Nov 8, 2016 at 11:47 AM, zhichang.yuan\n" + "> <yuanzhichang@hisilicon.com> wrote:\n" + ">> For arm64, there is no I/O space as other architectural platforms, such as\n" + ">> X86. Most I/O accesses are achieved based on MMIO. But for some arm64 SoCs,\n" + ">> such as Hip06, when accessing some legacy ISA devices connected to LPC, those\n" + ">> known port addresses are used to control the corresponding target devices, for\n" + ">> example, 0x2f8 is for UART, 0xe4 is for ipmi-bt. It is different from the\n" + ">> normal MMIO mode in using.\n" + ">>\n" + ">> To drive these devices, this patch introduces a method named indirect-IO.\n" + ">> In this method the in/out pair in arch/arm64/include/asm/io.h will be\n" + ">> redefined. When upper layer drivers call in/out with those known legacy port\n" + ">> addresses to access the peripherals, the hooking functions corrresponding to\n" + ">> those target peripherals will be called. Through this way, those upper layer\n" + ">> drivers which depend on in/out can run on Hip06 without any changes.\n" + ">>\n" + ">> Cc: Catalin Marinas <catalin.marinas@arm.com>\n" + ">> Cc: Will Deacon <will.deacon@arm.com>\n" + ">> Signed-off-by: zhichang.yuan <yuanzhichang@hisilicon.com>\n" + ">> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>\n" + ">> ---\n" + ">> arch/arm64/Kconfig | 6 +++\n" + ">> arch/arm64/include/asm/extio.h | 94 ++++++++++++++++++++++++++++++++++++++++++\n" + ">> arch/arm64/include/asm/io.h | 29 +++++++++++++\n" + ">> arch/arm64/kernel/Makefile | 1 +\n" + ">> arch/arm64/kernel/extio.c | 27 ++++++++++++\n" + ">> 5 files changed, 157 insertions(+)\n" + "> \n" + "> When I applied these three patches against current linus tree and\n" + "> enable CONFIG_HISILICON_LPC, the following build failure[1] is\n" + "> triggered when running 'make modules'.\n" + "> \n" + "\n" + "Thanks for your report!\n" + "\n" + "This patch has compilation issue on some architectures, sorry for the inconvenience caused by this!\n" + "The ongoing v6 will solve these issues.\n" + "I will trace this failure and provide a fix if you can not wait for the next version.\n" + "\n" + "Could you send me your .config in private? I don't want to bother all the hacker in the mail-list.\n" + "\n" + "\n" + "Thanks,\n" + "Zhichang\n" + "\n" + "> \n" + "> Thanks,\n" + "> Ming\n" + "> \n" + "> [1] 'make modules' failure log\n" + "> \n" + "> Building modules, stage 2.\n" + "> MODPOST 2260 modules\n" + "> ERROR: \"inb\" [drivers/watchdog/wdt_pci.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/watchdog/wdt_pci.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/watchdog/pcwd_pci.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/watchdog/pcwd_pci.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/tdfxfb.ko] undefined!\n" + "> .....\n" + "> ERROR: \"inb\" [drivers/ata/pata_cmd64x.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/ata/pata_artop.ko] undefined!\n" + "> scripts/Makefile.modpost:91: recipe for target '__modpost' failed\n" + "> make[1]: *** [__modpost] Error 1\n" + "> Makefile:1196: recipe for target 'modules' failed\n" + "> make: *** [modules] Error 2\n" + "> \n" + "> \n" + ">> create mode 100644 arch/arm64/include/asm/extio.h\n" + ">> create mode 100644 arch/arm64/kernel/extio.c\n" + ">>\n" + ">> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig\n" + ">> index 969ef88..b44070b 100644\n" + ">> --- a/arch/arm64/Kconfig\n" + ">> +++ b/arch/arm64/Kconfig\n" + ">> @@ -163,6 +163,12 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN\n" + ">> config ARCH_MMAP_RND_COMPAT_BITS_MAX\n" + ">> default 16\n" + ">>\n" + ">> +config ARM64_INDIRECT_PIO\n" + ">> + bool \"access peripherals with legacy I/O port\"\n" + ">> + help\n" + ">> + Support special accessors for ISA I/O devices. This is needed for\n" + ">> + SoCs that do not support standard read/write for the ISA range.\n" + ">> +\n" + ">> config NO_IOPORT_MAP\n" + ">> def_bool y if !PCI\n" + ">>\n" + ">> diff --git a/arch/arm64/include/asm/extio.h b/arch/arm64/include/asm/extio.h\n" + ">> new file mode 100644\n" + ">> index 0000000..6ae0787\n" + ">> --- /dev/null\n" + ">> +++ b/arch/arm64/include/asm/extio.h\n" + ">> @@ -0,0 +1,94 @@\n" + ">> +/*\n" + ">> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved.\n" + ">> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com>\n" + ">> + *\n" + ">> + * This program is free software; you can redistribute it and/or modify\n" + ">> + * it under the terms of the GNU General Public License version 2 as\n" + ">> + * published by the Free Software Foundation.\n" + ">> + *\n" + ">> + * This program is distributed in the hope that it will be useful,\n" + ">> + * but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + ">> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + ">> + * GNU General Public License for more details.\n" + ">> + *\n" + ">> + * You should have received a copy of the GNU General Public License\n" + ">> + * along with this program. If not, see <http://www.gnu.org/licenses/>.\n" + ">> + */\n" + ">> +\n" + ">> +#ifndef __LINUX_EXTIO_H\n" + ">> +#define __LINUX_EXTIO_H\n" + ">> +\n" + ">> +struct extio_ops {\n" + ">> + unsigned long start;/* inclusive, sys io addr */\n" + ">> + unsigned long end;/* inclusive, sys io addr */\n" + ">> +\n" + ">> + u64 (*pfin)(void *devobj, unsigned long ptaddr, size_t dlen);\n" + ">> + void (*pfout)(void *devobj, unsigned long ptaddr, u32 outval,\n" + ">> + size_t dlen);\n" + ">> + u64 (*pfins)(void *devobj, unsigned long ptaddr, void *inbuf,\n" + ">> + size_t dlen, unsigned int count);\n" + ">> + void (*pfouts)(void *devobj, unsigned long ptaddr,\n" + ">> + const void *outbuf, size_t dlen,\n" + ">> + unsigned int count);\n" + ">> + void *devpara;\n" + ">> +};\n" + ">> +\n" + ">> +extern struct extio_ops *arm64_extio_ops;\n" + ">> +\n" + ">> +#define DECLARE_EXTIO(bw, type) \\\n" + ">> +extern type in##bw(unsigned long addr); \\\n" + ">> +extern void out##bw(type value, unsigned long addr); \\\n" + ">> +extern void ins##bw(unsigned long addr, void *buffer, unsigned int count);\\\n" + ">> +extern void outs##bw(unsigned long addr, const void *buffer, unsigned int count);\n" + ">> +\n" + ">> +#define BUILD_EXTIO(bw, type) \\\n" + ">> +type in##bw(unsigned long addr) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + return read##bw(PCI_IOBASE + addr); \\\n" + ">> + return arm64_extio_ops->pfin ? \\\n" + ">> + arm64_extio_ops->pfin(arm64_extio_ops->devpara, \\\n" + ">> + addr, sizeof(type)) : -1; \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void out##bw(type value, unsigned long addr) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + write##bw(value, PCI_IOBASE + addr); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfout) \\\n" + ">> + arm64_extio_ops->pfout(arm64_extio_ops->devpara,\\\n" + ">> + addr, value, sizeof(type)); \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void ins##bw(unsigned long addr, void *buffer, unsigned int count) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + reads##bw(PCI_IOBASE + addr, buffer, count); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfins) \\\n" + ">> + arm64_extio_ops->pfins(arm64_extio_ops->devpara,\\\n" + ">> + addr, buffer, sizeof(type), count); \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void outs##bw(unsigned long addr, const void *buffer, unsigned int count) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + writes##bw(PCI_IOBASE + addr, buffer, count); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfouts) \\\n" + ">> + arm64_extio_ops->pfouts(arm64_extio_ops->devpara,\\\n" + ">> + addr, buffer, sizeof(type), count); \\\n" + ">> +}\n" + ">> +\n" + ">> +static inline void arm64_set_extops(struct extio_ops *ops)\n" + ">> +{\n" + ">> + if (ops)\n" + ">> + WRITE_ONCE(arm64_extio_ops, ops);\n" + ">> +}\n" + ">> +\n" + ">> +#endif /* __LINUX_EXTIO_H*/\n" + ">> diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h\n" + ">> index 0bba427..136735d 100644\n" + ">> --- a/arch/arm64/include/asm/io.h\n" + ">> +++ b/arch/arm64/include/asm/io.h\n" + ">> @@ -31,6 +31,7 @@\n" + ">> #include <asm/early_ioremap.h>\n" + ">> #include <asm/alternative.h>\n" + ">> #include <asm/cpufeature.h>\n" + ">> +#include <asm/extio.h>\n" + ">>\n" + ">> #include <xen/xen.h>\n" + ">>\n" + ">> @@ -149,6 +150,34 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)\n" + ">> #define IO_SPACE_LIMIT (PCI_IO_SIZE - 1)\n" + ">> #define PCI_IOBASE ((void __iomem *)PCI_IO_START)\n" + ">>\n" + ">> +\n" + ">> +/*\n" + ">> + * redefine the in(s)b/out(s)b for indirect-IO.\n" + ">> + */\n" + ">> +#ifdef CONFIG_ARM64_INDIRECT_PIO\n" + ">> +#define inb inb\n" + ">> +#define outb outb\n" + ">> +#define insb insb\n" + ">> +#define outsb outsb\n" + ">> +/* external declaration */\n" + ">> +DECLARE_EXTIO(b, u8)\n" + ">> +\n" + ">> +#define inw inw\n" + ">> +#define outw outw\n" + ">> +#define insw insw\n" + ">> +#define outsw outsw\n" + ">> +\n" + ">> +DECLARE_EXTIO(w, u16)\n" + ">> +\n" + ">> +#define inl inl\n" + ">> +#define outl outl\n" + ">> +#define insl insl\n" + ">> +#define outsl outsl\n" + ">> +\n" + ">> +DECLARE_EXTIO(l, u32)\n" + ">> +#endif\n" + ">> +\n" + ">> +\n" + ">> /*\n" + ">> * String version of I/O memory access operations.\n" + ">> */\n" + ">> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile\n" + ">> index 7d66bba..60e0482 100644\n" + ">> --- a/arch/arm64/kernel/Makefile\n" + ">> +++ b/arch/arm64/kernel/Makefile\n" + ">> @@ -31,6 +31,7 @@ arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \\\n" + ">> sys_compat.o entry32.o\n" + ">> arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o\n" + ">> arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o\n" + ">> +arm64-obj-$(CONFIG_ARM64_INDIRECT_PIO) += extio.o\n" + ">> arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o\n" + ">> arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o\n" + ">> arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o\n" + ">> diff --git a/arch/arm64/kernel/extio.c b/arch/arm64/kernel/extio.c\n" + ">> new file mode 100644\n" + ">> index 0000000..647b3fa\n" + ">> --- /dev/null\n" + ">> +++ b/arch/arm64/kernel/extio.c\n" + ">> @@ -0,0 +1,27 @@\n" + ">> +/*\n" + ">> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved.\n" + ">> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com>\n" + ">> + *\n" + ">> + * This program is free software; you can redistribute it and/or modify\n" + ">> + * it under the terms of the GNU General Public License version 2 as\n" + ">> + * published by the Free Software Foundation.\n" + ">> + *\n" + ">> + * This program is distributed in the hope that it will be useful,\n" + ">> + * but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + ">> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + ">> + * GNU General Public License for more details.\n" + ">> + *\n" + ">> + * You should have received a copy of the GNU General Public License\n" + ">> + * along with this program. If not, see <http://www.gnu.org/licenses/>.\n" + ">> + */\n" + ">> +\n" + ">> +#include <linux/io.h>\n" + ">> +\n" + ">> +struct extio_ops *arm64_extio_ops;\n" + ">> +\n" + ">> +\n" + ">> +BUILD_EXTIO(b, u8)\n" + ">> +\n" + ">> +BUILD_EXTIO(w, u16)\n" + ">> +\n" + ">> +BUILD_EXTIO(l, u32)\n" + ">> --\n" + ">> 1.9.1\n" + ">>\n" + "> \n" + "> \n" + > -fed89004616937ba8e0d068d584ec9df670c49b178295e735c345268124d4f79 +02e630af100779d33de4c4c7be778619721659d0383576fa937ee735a19ec485
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-dHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK +Hi?Ming, + + +On 2016/12/22 16:15, Ming Lei wrote: +> Hi Guys, +> +> On Tue, Nov 8, 2016 at 11:47 AM, zhichang.yuan +> <yuanzhichang@hisilicon.com> wrote: +>> For arm64, there is no I/O space as other architectural platforms, such as +>> X86. Most I/O accesses are achieved based on MMIO. But for some arm64 SoCs, +>> such as Hip06, when accessing some legacy ISA devices connected to LPC, those +>> known port addresses are used to control the corresponding target devices, for +>> example, 0x2f8 is for UART, 0xe4 is for ipmi-bt. It is different from the +>> normal MMIO mode in using. +>> +>> To drive these devices, this patch introduces a method named indirect-IO. +>> In this method the in/out pair in arch/arm64/include/asm/io.h will be +>> redefined. When upper layer drivers call in/out with those known legacy port +>> addresses to access the peripherals, the hooking functions corrresponding to +>> those target peripherals will be called. Through this way, those upper layer +>> drivers which depend on in/out can run on Hip06 without any changes. +>> +>> Cc: Catalin Marinas <catalin.marinas@arm.com> +>> Cc: Will Deacon <will.deacon@arm.com> +>> Signed-off-by: zhichang.yuan <yuanzhichang@hisilicon.com> +>> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> +>> --- +>> arch/arm64/Kconfig | 6 +++ +>> arch/arm64/include/asm/extio.h | 94 ++++++++++++++++++++++++++++++++++++++++++ +>> arch/arm64/include/asm/io.h | 29 +++++++++++++ +>> arch/arm64/kernel/Makefile | 1 + +>> arch/arm64/kernel/extio.c | 27 ++++++++++++ +>> 5 files changed, 157 insertions(+) +> +> When I applied these three patches against current linus tree and +> enable CONFIG_HISILICON_LPC, the following build failure[1] is +> triggered when running 'make modules'. +> + +Thanks for your report! + +This patch has compilation issue on some architectures, sorry for the inconvenience caused by this! +The ongoing v6 will solve these issues. +I will trace this failure and provide a fix if you can not wait for the next version. + +Could you send me your .config in private? I don't want to bother all the hacker in the mail-list. + + +Thanks, +Zhichang + +> +> Thanks, +> Ming +> +> [1] 'make modules' failure log +> +> Building modules, stage 2. +> MODPOST 2260 modules +> ERROR: "inb" [drivers/watchdog/wdt_pci.ko] undefined! +> ERROR: "outb" [drivers/watchdog/wdt_pci.ko] undefined! +> ERROR: "outb" [drivers/watchdog/pcwd_pci.ko] undefined! +> ERROR: "inb" [drivers/watchdog/pcwd_pci.ko] undefined! +> ERROR: "outw" [drivers/video/vgastate.ko] undefined! +> ERROR: "outb" [drivers/video/vgastate.ko] undefined! +> ERROR: "inb" [drivers/video/vgastate.ko] undefined! +> ERROR: "outw" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "outb" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "outw" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "outb" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/tdfxfb.ko] undefined! +> ..... +> ERROR: "inb" [drivers/ata/pata_cmd64x.ko] undefined! +> ERROR: "inb" [drivers/ata/pata_artop.ko] undefined! +> scripts/Makefile.modpost:91: recipe for target '__modpost' failed +> make[1]: *** [__modpost] Error 1 +> Makefile:1196: recipe for target 'modules' failed +> make: *** [modules] Error 2 +> +> +>> create mode 100644 arch/arm64/include/asm/extio.h +>> create mode 100644 arch/arm64/kernel/extio.c +>> +>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig +>> index 969ef88..b44070b 100644 +>> --- a/arch/arm64/Kconfig +>> +++ b/arch/arm64/Kconfig +>> @@ -163,6 +163,12 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN +>> config ARCH_MMAP_RND_COMPAT_BITS_MAX +>> default 16 +>> +>> +config ARM64_INDIRECT_PIO +>> + bool "access peripherals with legacy I/O port" +>> + help +>> + Support special accessors for ISA I/O devices. This is needed for +>> + SoCs that do not support standard read/write for the ISA range. +>> + +>> config NO_IOPORT_MAP +>> def_bool y if !PCI +>> +>> diff --git a/arch/arm64/include/asm/extio.h b/arch/arm64/include/asm/extio.h +>> new file mode 100644 +>> index 0000000..6ae0787 +>> --- /dev/null +>> +++ b/arch/arm64/include/asm/extio.h +>> @@ -0,0 +1,94 @@ +>> +/* +>> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved. +>> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com> +>> + * +>> + * This program is free software; you can redistribute it and/or modify +>> + * it under the terms of the GNU General Public License version 2 as +>> + * published by the Free Software Foundation. +>> + * +>> + * This program is distributed in the hope that it will be useful, +>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of +>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +>> + * GNU General Public License for more details. +>> + * +>> + * You should have received a copy of the GNU General Public License +>> + * along with this program. If not, see <http://www.gnu.org/licenses/>. +>> + */ +>> + +>> +#ifndef __LINUX_EXTIO_H +>> +#define __LINUX_EXTIO_H +>> + +>> +struct extio_ops { +>> + unsigned long start;/* inclusive, sys io addr */ +>> + unsigned long end;/* inclusive, sys io addr */ +>> + +>> + u64 (*pfin)(void *devobj, unsigned long ptaddr, size_t dlen); +>> + void (*pfout)(void *devobj, unsigned long ptaddr, u32 outval, +>> + size_t dlen); +>> + u64 (*pfins)(void *devobj, unsigned long ptaddr, void *inbuf, +>> + size_t dlen, unsigned int count); +>> + void (*pfouts)(void *devobj, unsigned long ptaddr, +>> + const void *outbuf, size_t dlen, +>> + unsigned int count); +>> + void *devpara; +>> +}; +>> + +>> +extern struct extio_ops *arm64_extio_ops; +>> + +>> +#define DECLARE_EXTIO(bw, type) \ +>> +extern type in##bw(unsigned long addr); \ +>> +extern void out##bw(type value, unsigned long addr); \ +>> +extern void ins##bw(unsigned long addr, void *buffer, unsigned int count);\ +>> +extern void outs##bw(unsigned long addr, const void *buffer, unsigned int count); +>> + +>> +#define BUILD_EXTIO(bw, type) \ +>> +type in##bw(unsigned long addr) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + return read##bw(PCI_IOBASE + addr); \ +>> + return arm64_extio_ops->pfin ? \ +>> + arm64_extio_ops->pfin(arm64_extio_ops->devpara, \ +>> + addr, sizeof(type)) : -1; \ +>> +} \ +>> + \ +>> +void out##bw(type value, unsigned long addr) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + write##bw(value, PCI_IOBASE + addr); \ +>> + else \ +>> + if (arm64_extio_ops->pfout) \ +>> + arm64_extio_ops->pfout(arm64_extio_ops->devpara,\ +>> + addr, value, sizeof(type)); \ +>> +} \ +>> + \ +>> +void ins##bw(unsigned long addr, void *buffer, unsigned int count) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + reads##bw(PCI_IOBASE + addr, buffer, count); \ +>> + else \ +>> + if (arm64_extio_ops->pfins) \ +>> + arm64_extio_ops->pfins(arm64_extio_ops->devpara,\ +>> + addr, buffer, sizeof(type), count); \ +>> +} \ +>> + \ +>> +void outs##bw(unsigned long addr, const void *buffer, unsigned int count) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + writes##bw(PCI_IOBASE + addr, buffer, count); \ +>> + else \ +>> + if (arm64_extio_ops->pfouts) \ +>> + arm64_extio_ops->pfouts(arm64_extio_ops->devpara,\ +>> + addr, buffer, sizeof(type), count); \ +>> +} +>> + +>> +static inline void arm64_set_extops(struct extio_ops *ops) +>> +{ +>> + if (ops) +>> + WRITE_ONCE(arm64_extio_ops, ops); +>> +} +>> + +>> +#endif /* __LINUX_EXTIO_H*/ +>> diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h +>> index 0bba427..136735d 100644 +>> --- a/arch/arm64/include/asm/io.h +>> +++ b/arch/arm64/include/asm/io.h +>> @@ -31,6 +31,7 @@ +>> #include <asm/early_ioremap.h> +>> #include <asm/alternative.h> +>> #include <asm/cpufeature.h> +>> +#include <asm/extio.h> +>> +>> #include <xen/xen.h> +>> +>> @@ -149,6 +150,34 @@ static inline u64 __raw_readq(const volatile void __iomem *addr) +>> #define IO_SPACE_LIMIT (PCI_IO_SIZE - 1) +>> #define PCI_IOBASE ((void __iomem *)PCI_IO_START) +>> +>> + +>> +/* +>> + * redefine the in(s)b/out(s)b for indirect-IO. +>> + */ +>> +#ifdef CONFIG_ARM64_INDIRECT_PIO +>> +#define inb inb +>> +#define outb outb +>> +#define insb insb +>> +#define outsb outsb +>> +/* external declaration */ +>> +DECLARE_EXTIO(b, u8) +>> + +>> +#define inw inw +>> +#define outw outw +>> +#define insw insw +>> +#define outsw outsw +>> + +>> +DECLARE_EXTIO(w, u16) +>> + +>> +#define inl inl +>> +#define outl outl +>> +#define insl insl +>> +#define outsl outsl +>> + +>> +DECLARE_EXTIO(l, u32) +>> +#endif +>> + +>> + +>> /* +>> * String version of I/O memory access operations. +>> */ +>> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile +>> index 7d66bba..60e0482 100644 +>> --- a/arch/arm64/kernel/Makefile +>> +++ b/arch/arm64/kernel/Makefile +>> @@ -31,6 +31,7 @@ arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \ +>> sys_compat.o entry32.o +>> arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o +>> arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o +>> +arm64-obj-$(CONFIG_ARM64_INDIRECT_PIO) += extio.o +>> arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o +>> arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o +>> arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o +>> diff --git a/arch/arm64/kernel/extio.c b/arch/arm64/kernel/extio.c +>> new file mode 100644 +>> index 0000000..647b3fa +>> --- /dev/null +>> +++ b/arch/arm64/kernel/extio.c +>> @@ -0,0 +1,27 @@ +>> +/* +>> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved. +>> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com> +>> + * +>> + * This program is free software; you can redistribute it and/or modify +>> + * it under the terms of the GNU General Public License version 2 as +>> + * published by the Free Software Foundation. +>> + * +>> + * This program is distributed in the hope that it will be useful, +>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of +>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +>> + * GNU General Public License for more details. +>> + * +>> + * You should have received a copy of the GNU General Public License +>> + * along with this program. If not, see <http://www.gnu.org/licenses/>. +>> + */ +>> + +>> +#include <linux/io.h> +>> + +>> +struct extio_ops *arm64_extio_ops; +>> + +>> + +>> +BUILD_EXTIO(b, u8) +>> + +>> +BUILD_EXTIO(w, u16) +>> + +>> +BUILD_EXTIO(l, u32) +>> -- +>> 1.9.1 +>> +> +> +> diff --git a/a/content_digest b/N2/content_digest index d3eaabc..e9ebb8b 100644 --- a/a/content_digest +++ b/N2/content_digest @@ -1,262 +1,311 @@ "ref\01478576829-112707-1-git-send-email-yuanzhichang@hisilicon.com\0" "ref\01478576829-112707-2-git-send-email-yuanzhichang@hisilicon.com\0" "ref\0CACVXFVNS9n9_ty8y3CyqfRaLitqDKdk1mMOrQHM-enOgJtUBeQ@mail.gmail.com\0" - "From\0zhichang.yuan <yuanzhichang@hisilicon.com>\0" - "Subject\0Re: [PATCH V5 1/3] ARM64 LPC: Indirect ISA port IO introduced\0" + "From\0yuanzhichang@hisilicon.com (zhichang.yuan)\0" + "Subject\0[PATCH V5 1/3] ARM64 LPC: Indirect ISA port IO introduced\0" "Date\0Fri, 23 Dec 2016 09:43:55 +0800\0" - "To\0Ming Lei <tom.leiming@gmail.com>\0" - "Cc\0Mark Rutland <mark.rutland@arm.com>" - gabriele.paoloni@huawei.com - Benjamin Herrenschmidt <benh@kernel.crashing.org> - Will Deacon <will.deacon@arm.com> - linuxarm@huawei.com - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - Arnd Bergmann <arnd@arndb.de> - xuwei5@hisilicon.com - linux-serial@vger.kernel.org - Catalin Marinas <catalin.marinas@arm.com> - devicetree@vger.kernel.org <devicetree@vger.kernel.org> - minyard@acm.org - Liviu Dudau <liviu.dudau@arm.com> - john.garry@huawei.com - zourongrong@gmail.com - Rob Herring <robh+dt@kernel.org> - Bjorn Helgaas <bhelgaas@google.com> - kantyzc@163.com - zhichang.yuan02@gmail.com - linux-arm-kernel <linux-arm-kernel@lists.infradead.org> - linux-pci@vger.kernel.org <linux-pci@vger.kernel.org> - Linux Kernel Mailing List <linux-kernel@vger.kernel.org> - " Olof Johansson <olof@lixom.net>\0" + "To\0linux-arm-kernel@lists.infradead.org\0" "\00:1\0" "b\0" - "SGnvvIxNaW5nLAoKCk9uIDIwMTYvMTIvMjIgMTY6MTUsIE1pbmcgTGVpIHdyb3RlOgo+IEhpIEd1\n" - "eXMsCj4gCj4gT24gVHVlLCBOb3YgOCwgMjAxNiBhdCAxMTo0NyBBTSwgemhpY2hhbmcueXVhbgo+\n" - 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"TERfRVhUSU8oYiwgdTgpCj4+ICsKPj4gK0JVSUxEX0VYVElPKHcsIHUxNikKPj4gKwo+PiArQlVJ\n" - "TERfRVhUSU8obCwgdTMyKQo+PiAtLQo+PiAxLjkuMQo+Pgo+IAo+IAo+IAoKCl9fX19fX19fX19f\n" - "X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFp\n" - "bGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlz\n" - dHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK + "Hi?Ming,\n" + "\n" + "\n" + "On 2016/12/22 16:15, Ming Lei wrote:\n" + "> Hi Guys,\n" + "> \n" + "> On Tue, Nov 8, 2016 at 11:47 AM, zhichang.yuan\n" + "> <yuanzhichang@hisilicon.com> wrote:\n" + ">> For arm64, there is no I/O space as other architectural platforms, such as\n" + ">> X86. Most I/O accesses are achieved based on MMIO. But for some arm64 SoCs,\n" + ">> such as Hip06, when accessing some legacy ISA devices connected to LPC, those\n" + ">> known port addresses are used to control the corresponding target devices, for\n" + ">> example, 0x2f8 is for UART, 0xe4 is for ipmi-bt. It is different from the\n" + ">> normal MMIO mode in using.\n" + ">>\n" + ">> To drive these devices, this patch introduces a method named indirect-IO.\n" + ">> In this method the in/out pair in arch/arm64/include/asm/io.h will be\n" + ">> redefined. When upper layer drivers call in/out with those known legacy port\n" + ">> addresses to access the peripherals, the hooking functions corrresponding to\n" + ">> those target peripherals will be called. Through this way, those upper layer\n" + ">> drivers which depend on in/out can run on Hip06 without any changes.\n" + ">>\n" + ">> Cc: Catalin Marinas <catalin.marinas@arm.com>\n" + ">> Cc: Will Deacon <will.deacon@arm.com>\n" + ">> Signed-off-by: zhichang.yuan <yuanzhichang@hisilicon.com>\n" + ">> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>\n" + ">> ---\n" + ">> arch/arm64/Kconfig | 6 +++\n" + ">> arch/arm64/include/asm/extio.h | 94 ++++++++++++++++++++++++++++++++++++++++++\n" + ">> arch/arm64/include/asm/io.h | 29 +++++++++++++\n" + ">> arch/arm64/kernel/Makefile | 1 +\n" + ">> arch/arm64/kernel/extio.c | 27 ++++++++++++\n" + ">> 5 files changed, 157 insertions(+)\n" + "> \n" + "> When I applied these three patches against current linus tree and\n" + "> enable CONFIG_HISILICON_LPC, the following build failure[1] is\n" + "> triggered when running 'make modules'.\n" + "> \n" + "\n" + "Thanks for your report!\n" + "\n" + "This patch has compilation issue on some architectures, sorry for the inconvenience caused by this!\n" + "The ongoing v6 will solve these issues.\n" + "I will trace this failure and provide a fix if you can not wait for the next version.\n" + "\n" + "Could you send me your .config in private? I don't want to bother all the hacker in the mail-list.\n" + "\n" + "\n" + "Thanks,\n" + "Zhichang\n" + "\n" + "> \n" + "> Thanks,\n" + "> Ming\n" + "> \n" + "> [1] 'make modules' failure log\n" + "> \n" + "> Building modules, stage 2.\n" + "> MODPOST 2260 modules\n" + "> ERROR: \"inb\" [drivers/watchdog/wdt_pci.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/watchdog/wdt_pci.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/watchdog/pcwd_pci.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/watchdog/pcwd_pci.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/tdfxfb.ko] undefined!\n" + "> .....\n" + "> ERROR: \"inb\" [drivers/ata/pata_cmd64x.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/ata/pata_artop.ko] undefined!\n" + "> scripts/Makefile.modpost:91: recipe for target '__modpost' failed\n" + "> make[1]: *** [__modpost] Error 1\n" + "> Makefile:1196: recipe for target 'modules' failed\n" + "> make: *** [modules] Error 2\n" + "> \n" + "> \n" + ">> create mode 100644 arch/arm64/include/asm/extio.h\n" + ">> create mode 100644 arch/arm64/kernel/extio.c\n" + ">>\n" + ">> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig\n" + ">> index 969ef88..b44070b 100644\n" + ">> --- a/arch/arm64/Kconfig\n" + ">> +++ b/arch/arm64/Kconfig\n" + ">> @@ -163,6 +163,12 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN\n" + ">> config ARCH_MMAP_RND_COMPAT_BITS_MAX\n" + ">> default 16\n" + ">>\n" + ">> +config ARM64_INDIRECT_PIO\n" + ">> + bool \"access peripherals with legacy I/O port\"\n" + ">> + help\n" + ">> + Support special accessors for ISA I/O devices. This is needed for\n" + ">> + SoCs that do not support standard read/write for the ISA range.\n" + ">> +\n" + ">> config NO_IOPORT_MAP\n" + ">> def_bool y if !PCI\n" + ">>\n" + ">> diff --git a/arch/arm64/include/asm/extio.h b/arch/arm64/include/asm/extio.h\n" + ">> new file mode 100644\n" + ">> index 0000000..6ae0787\n" + ">> --- /dev/null\n" + ">> +++ b/arch/arm64/include/asm/extio.h\n" + ">> @@ -0,0 +1,94 @@\n" + ">> +/*\n" + ">> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved.\n" + ">> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com>\n" + ">> + *\n" + ">> + * This program is free software; you can redistribute it and/or modify\n" + ">> + * it under the terms of the GNU General Public License version 2 as\n" + ">> + * published by the Free Software Foundation.\n" + ">> + *\n" + ">> + * This program is distributed in the hope that it will be useful,\n" + ">> + * but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + ">> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + ">> + * GNU General Public License for more details.\n" + ">> + *\n" + ">> + * You should have received a copy of the GNU General Public License\n" + ">> + * along with this program. If not, see <http://www.gnu.org/licenses/>.\n" + ">> + */\n" + ">> +\n" + ">> +#ifndef __LINUX_EXTIO_H\n" + ">> +#define __LINUX_EXTIO_H\n" + ">> +\n" + ">> +struct extio_ops {\n" + ">> + unsigned long start;/* inclusive, sys io addr */\n" + ">> + unsigned long end;/* inclusive, sys io addr */\n" + ">> +\n" + ">> + u64 (*pfin)(void *devobj, unsigned long ptaddr, size_t dlen);\n" + ">> + void (*pfout)(void *devobj, unsigned long ptaddr, u32 outval,\n" + ">> + size_t dlen);\n" + ">> + u64 (*pfins)(void *devobj, unsigned long ptaddr, void *inbuf,\n" + ">> + size_t dlen, unsigned int count);\n" + ">> + void (*pfouts)(void *devobj, unsigned long ptaddr,\n" + ">> + const void *outbuf, size_t dlen,\n" + ">> + unsigned int count);\n" + ">> + void *devpara;\n" + ">> +};\n" + ">> +\n" + ">> +extern struct extio_ops *arm64_extio_ops;\n" + ">> +\n" + ">> +#define DECLARE_EXTIO(bw, type) \\\n" + ">> +extern type in##bw(unsigned long addr); \\\n" + ">> +extern void out##bw(type value, unsigned long addr); \\\n" + ">> +extern void ins##bw(unsigned long addr, void *buffer, unsigned int count);\\\n" + ">> +extern void outs##bw(unsigned long addr, const void *buffer, unsigned int count);\n" + ">> +\n" + ">> +#define BUILD_EXTIO(bw, type) \\\n" + ">> +type in##bw(unsigned long addr) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + return read##bw(PCI_IOBASE + addr); \\\n" + ">> + return arm64_extio_ops->pfin ? \\\n" + ">> + arm64_extio_ops->pfin(arm64_extio_ops->devpara, \\\n" + ">> + addr, sizeof(type)) : -1; \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void out##bw(type value, unsigned long addr) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + write##bw(value, PCI_IOBASE + addr); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfout) \\\n" + ">> + arm64_extio_ops->pfout(arm64_extio_ops->devpara,\\\n" + ">> + addr, value, sizeof(type)); \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void ins##bw(unsigned long addr, void *buffer, unsigned int count) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + reads##bw(PCI_IOBASE + addr, buffer, count); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfins) \\\n" + ">> + arm64_extio_ops->pfins(arm64_extio_ops->devpara,\\\n" + ">> + addr, buffer, sizeof(type), count); \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void outs##bw(unsigned long addr, const void *buffer, unsigned int count) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + writes##bw(PCI_IOBASE + addr, buffer, count); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfouts) \\\n" + ">> + arm64_extio_ops->pfouts(arm64_extio_ops->devpara,\\\n" + ">> + addr, buffer, sizeof(type), count); \\\n" + ">> +}\n" + ">> +\n" + ">> +static inline void arm64_set_extops(struct extio_ops *ops)\n" + ">> +{\n" + ">> + if (ops)\n" + ">> + WRITE_ONCE(arm64_extio_ops, ops);\n" + ">> +}\n" + ">> +\n" + ">> +#endif /* __LINUX_EXTIO_H*/\n" + ">> diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h\n" + ">> index 0bba427..136735d 100644\n" + ">> --- a/arch/arm64/include/asm/io.h\n" + ">> +++ b/arch/arm64/include/asm/io.h\n" + ">> @@ -31,6 +31,7 @@\n" + ">> #include <asm/early_ioremap.h>\n" + ">> #include <asm/alternative.h>\n" + ">> #include <asm/cpufeature.h>\n" + ">> +#include <asm/extio.h>\n" + ">>\n" + ">> #include <xen/xen.h>\n" + ">>\n" + ">> @@ -149,6 +150,34 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)\n" + ">> #define IO_SPACE_LIMIT (PCI_IO_SIZE - 1)\n" + ">> #define PCI_IOBASE ((void __iomem *)PCI_IO_START)\n" + ">>\n" + ">> +\n" + ">> +/*\n" + ">> + * redefine the in(s)b/out(s)b for indirect-IO.\n" + ">> + */\n" + ">> +#ifdef CONFIG_ARM64_INDIRECT_PIO\n" + ">> +#define inb inb\n" + ">> +#define outb outb\n" + ">> +#define insb insb\n" + ">> +#define outsb outsb\n" + ">> +/* external declaration */\n" + ">> +DECLARE_EXTIO(b, u8)\n" + ">> +\n" + ">> +#define inw inw\n" + ">> +#define outw outw\n" + ">> +#define insw insw\n" + ">> +#define outsw outsw\n" + ">> +\n" + ">> +DECLARE_EXTIO(w, u16)\n" + ">> +\n" + ">> +#define inl inl\n" + ">> +#define outl outl\n" + ">> +#define insl insl\n" + ">> +#define outsl outsl\n" + ">> +\n" + ">> +DECLARE_EXTIO(l, u32)\n" + ">> +#endif\n" + ">> +\n" + ">> +\n" + ">> /*\n" + ">> * String version of I/O memory access operations.\n" + ">> */\n" + ">> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile\n" + ">> index 7d66bba..60e0482 100644\n" + ">> --- a/arch/arm64/kernel/Makefile\n" + ">> +++ b/arch/arm64/kernel/Makefile\n" + ">> @@ -31,6 +31,7 @@ arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \\\n" + ">> sys_compat.o entry32.o\n" + ">> arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o\n" + ">> arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o\n" + ">> +arm64-obj-$(CONFIG_ARM64_INDIRECT_PIO) += extio.o\n" + ">> arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o\n" + ">> arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o\n" + ">> arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o\n" + ">> diff --git a/arch/arm64/kernel/extio.c b/arch/arm64/kernel/extio.c\n" + ">> new file mode 100644\n" + ">> index 0000000..647b3fa\n" + ">> --- /dev/null\n" + ">> +++ b/arch/arm64/kernel/extio.c\n" + ">> @@ -0,0 +1,27 @@\n" + ">> +/*\n" + ">> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved.\n" + ">> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com>\n" + ">> + *\n" + ">> + * This program is free software; you can redistribute it and/or modify\n" + ">> + * it under the terms of the GNU General Public License version 2 as\n" + ">> + * published by the Free Software Foundation.\n" + ">> + *\n" + ">> + * This program is distributed in the hope that it will be useful,\n" + ">> + * but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + ">> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + ">> + * GNU General Public License for more details.\n" + ">> + *\n" + ">> + * You should have received a copy of the GNU General Public License\n" + ">> + * along with this program. If not, see <http://www.gnu.org/licenses/>.\n" + ">> + */\n" + ">> +\n" + ">> +#include <linux/io.h>\n" + ">> +\n" + ">> +struct extio_ops *arm64_extio_ops;\n" + ">> +\n" + ">> +\n" + ">> +BUILD_EXTIO(b, u8)\n" + ">> +\n" + ">> +BUILD_EXTIO(w, u16)\n" + ">> +\n" + ">> +BUILD_EXTIO(l, u32)\n" + ">> --\n" + ">> 1.9.1\n" + ">>\n" + "> \n" + "> \n" + > -fed89004616937ba8e0d068d584ec9df670c49b178295e735c345268124d4f79 +2af14dcbd5f105f40a6c7caac20fb63d7b38b0332055695a8f7dd06830568c89
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-dHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK +Hi，Ming, + + +On 2016/12/22 16:15, Ming Lei wrote: +> Hi Guys, +> +> On Tue, Nov 8, 2016 at 11:47 AM, zhichang.yuan +> <yuanzhichang@hisilicon.com> wrote: +>> For arm64, there is no I/O space as other architectural platforms, such as +>> X86. Most I/O accesses are achieved based on MMIO. But for some arm64 SoCs, +>> such as Hip06, when accessing some legacy ISA devices connected to LPC, those +>> known port addresses are used to control the corresponding target devices, for +>> example, 0x2f8 is for UART, 0xe4 is for ipmi-bt. It is different from the +>> normal MMIO mode in using. +>> +>> To drive these devices, this patch introduces a method named indirect-IO. +>> In this method the in/out pair in arch/arm64/include/asm/io.h will be +>> redefined. When upper layer drivers call in/out with those known legacy port +>> addresses to access the peripherals, the hooking functions corrresponding to +>> those target peripherals will be called. Through this way, those upper layer +>> drivers which depend on in/out can run on Hip06 without any changes. +>> +>> Cc: Catalin Marinas <catalin.marinas@arm.com> +>> Cc: Will Deacon <will.deacon@arm.com> +>> Signed-off-by: zhichang.yuan <yuanzhichang@hisilicon.com> +>> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> +>> --- +>> arch/arm64/Kconfig | 6 +++ +>> arch/arm64/include/asm/extio.h | 94 ++++++++++++++++++++++++++++++++++++++++++ +>> arch/arm64/include/asm/io.h | 29 +++++++++++++ +>> arch/arm64/kernel/Makefile | 1 + +>> arch/arm64/kernel/extio.c | 27 ++++++++++++ +>> 5 files changed, 157 insertions(+) +> +> When I applied these three patches against current linus tree and +> enable CONFIG_HISILICON_LPC, the following build failure[1] is +> triggered when running 'make modules'. +> + +Thanks for your report! + +This patch has compilation issue on some architectures, sorry for the inconvenience caused by this! +The ongoing v6 will solve these issues. +I will trace this failure and provide a fix if you can not wait for the next version. + +Could you send me your .config in private? I don't want to bother all the hacker in the mail-list. + + +Thanks, +Zhichang + +> +> Thanks, +> Ming +> +> [1] 'make modules' failure log +> +> Building modules, stage 2. +> MODPOST 2260 modules +> ERROR: "inb" [drivers/watchdog/wdt_pci.ko] undefined! +> ERROR: "outb" [drivers/watchdog/wdt_pci.ko] undefined! +> ERROR: "outb" [drivers/watchdog/pcwd_pci.ko] undefined! +> ERROR: "inb" [drivers/watchdog/pcwd_pci.ko] undefined! +> ERROR: "outw" [drivers/video/vgastate.ko] undefined! +> ERROR: "outb" [drivers/video/vgastate.ko] undefined! +> ERROR: "inb" [drivers/video/vgastate.ko] undefined! +> ERROR: "outw" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "outb" [drivers/video/fbdev/vt8623fb.ko] undefined! +> ERROR: "outw" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "outb" [drivers/video/fbdev/tridentfb.ko] undefined! +> ERROR: "inb" [drivers/video/fbdev/tdfxfb.ko] undefined! +> ..... +> ERROR: "inb" [drivers/ata/pata_cmd64x.ko] undefined! +> ERROR: "inb" [drivers/ata/pata_artop.ko] undefined! +> scripts/Makefile.modpost:91: recipe for target '__modpost' failed +> make[1]: *** [__modpost] Error 1 +> Makefile:1196: recipe for target 'modules' failed +> make: *** [modules] Error 2 +> +> +>> create mode 100644 arch/arm64/include/asm/extio.h +>> create mode 100644 arch/arm64/kernel/extio.c +>> +>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig +>> index 969ef88..b44070b 100644 +>> --- a/arch/arm64/Kconfig +>> +++ b/arch/arm64/Kconfig +>> @@ -163,6 +163,12 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN +>> config ARCH_MMAP_RND_COMPAT_BITS_MAX +>> default 16 +>> +>> +config ARM64_INDIRECT_PIO +>> + bool "access peripherals with legacy I/O port" +>> + help +>> + Support special accessors for ISA I/O devices. This is needed for +>> + SoCs that do not support standard read/write for the ISA range. +>> + +>> config NO_IOPORT_MAP +>> def_bool y if !PCI +>> +>> diff --git a/arch/arm64/include/asm/extio.h b/arch/arm64/include/asm/extio.h +>> new file mode 100644 +>> index 0000000..6ae0787 +>> --- /dev/null +>> +++ b/arch/arm64/include/asm/extio.h +>> @@ -0,0 +1,94 @@ +>> +/* +>> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved. +>> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com> +>> + * +>> + * This program is free software; you can redistribute it and/or modify +>> + * it under the terms of the GNU General Public License version 2 as +>> + * published by the Free Software Foundation. +>> + * +>> + * This program is distributed in the hope that it will be useful, +>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of +>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +>> + * GNU General Public License for more details. +>> + * +>> + * You should have received a copy of the GNU General Public License +>> + * along with this program. If not, see <http://www.gnu.org/licenses/>. +>> + */ +>> + +>> +#ifndef __LINUX_EXTIO_H +>> +#define __LINUX_EXTIO_H +>> + +>> +struct extio_ops { +>> + unsigned long start;/* inclusive, sys io addr */ +>> + unsigned long end;/* inclusive, sys io addr */ +>> + +>> + u64 (*pfin)(void *devobj, unsigned long ptaddr, size_t dlen); +>> + void (*pfout)(void *devobj, unsigned long ptaddr, u32 outval, +>> + size_t dlen); +>> + u64 (*pfins)(void *devobj, unsigned long ptaddr, void *inbuf, +>> + size_t dlen, unsigned int count); +>> + void (*pfouts)(void *devobj, unsigned long ptaddr, +>> + const void *outbuf, size_t dlen, +>> + unsigned int count); +>> + void *devpara; +>> +}; +>> + +>> +extern struct extio_ops *arm64_extio_ops; +>> + +>> +#define DECLARE_EXTIO(bw, type) \ +>> +extern type in##bw(unsigned long addr); \ +>> +extern void out##bw(type value, unsigned long addr); \ +>> +extern void ins##bw(unsigned long addr, void *buffer, unsigned int count);\ +>> +extern void outs##bw(unsigned long addr, const void *buffer, unsigned int count); +>> + +>> +#define BUILD_EXTIO(bw, type) \ +>> +type in##bw(unsigned long addr) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + return read##bw(PCI_IOBASE + addr); \ +>> + return arm64_extio_ops->pfin ? \ +>> + arm64_extio_ops->pfin(arm64_extio_ops->devpara, \ +>> + addr, sizeof(type)) : -1; \ +>> +} \ +>> + \ +>> +void out##bw(type value, unsigned long addr) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + write##bw(value, PCI_IOBASE + addr); \ +>> + else \ +>> + if (arm64_extio_ops->pfout) \ +>> + arm64_extio_ops->pfout(arm64_extio_ops->devpara,\ +>> + addr, value, sizeof(type)); \ +>> +} \ +>> + \ +>> +void ins##bw(unsigned long addr, void *buffer, unsigned int count) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + reads##bw(PCI_IOBASE + addr, buffer, count); \ +>> + else \ +>> + if (arm64_extio_ops->pfins) \ +>> + arm64_extio_ops->pfins(arm64_extio_ops->devpara,\ +>> + addr, buffer, sizeof(type), count); \ +>> +} \ +>> + \ +>> +void outs##bw(unsigned long addr, const void *buffer, unsigned int count) \ +>> +{ \ +>> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \ +>> + arm64_extio_ops->end < addr) \ +>> + writes##bw(PCI_IOBASE + addr, buffer, count); \ +>> + else \ +>> + if (arm64_extio_ops->pfouts) \ +>> + arm64_extio_ops->pfouts(arm64_extio_ops->devpara,\ +>> + addr, buffer, sizeof(type), count); \ +>> +} +>> + +>> +static inline void arm64_set_extops(struct extio_ops *ops) +>> +{ +>> + if (ops) +>> + WRITE_ONCE(arm64_extio_ops, ops); +>> +} +>> + +>> +#endif /* __LINUX_EXTIO_H*/ +>> diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h +>> index 0bba427..136735d 100644 +>> --- a/arch/arm64/include/asm/io.h +>> +++ b/arch/arm64/include/asm/io.h +>> @@ -31,6 +31,7 @@ +>> #include <asm/early_ioremap.h> +>> #include <asm/alternative.h> +>> #include <asm/cpufeature.h> +>> +#include <asm/extio.h> +>> +>> #include <xen/xen.h> +>> +>> @@ -149,6 +150,34 @@ static inline u64 __raw_readq(const volatile void __iomem *addr) +>> #define IO_SPACE_LIMIT (PCI_IO_SIZE - 1) +>> #define PCI_IOBASE ((void __iomem *)PCI_IO_START) +>> +>> + +>> +/* +>> + * redefine the in(s)b/out(s)b for indirect-IO. +>> + */ +>> +#ifdef CONFIG_ARM64_INDIRECT_PIO +>> +#define inb inb +>> +#define outb outb +>> +#define insb insb +>> +#define outsb outsb +>> +/* external declaration */ +>> +DECLARE_EXTIO(b, u8) +>> + +>> +#define inw inw +>> +#define outw outw +>> +#define insw insw +>> +#define outsw outsw +>> + +>> +DECLARE_EXTIO(w, u16) +>> + +>> +#define inl inl +>> +#define outl outl +>> +#define insl insl +>> +#define outsl outsl +>> + +>> +DECLARE_EXTIO(l, u32) +>> +#endif +>> + +>> + +>> /* +>> * String version of I/O memory access operations. +>> */ +>> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile +>> index 7d66bba..60e0482 100644 +>> --- a/arch/arm64/kernel/Makefile +>> +++ b/arch/arm64/kernel/Makefile +>> @@ -31,6 +31,7 @@ arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \ +>> sys_compat.o entry32.o +>> arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o +>> arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o +>> +arm64-obj-$(CONFIG_ARM64_INDIRECT_PIO) += extio.o +>> arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o +>> arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o +>> arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o +>> diff --git a/arch/arm64/kernel/extio.c b/arch/arm64/kernel/extio.c +>> new file mode 100644 +>> index 0000000..647b3fa +>> --- /dev/null +>> +++ b/arch/arm64/kernel/extio.c +>> @@ -0,0 +1,27 @@ +>> +/* +>> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved. +>> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com> +>> + * +>> + * This program is free software; you can redistribute it and/or modify +>> + * it under the terms of the GNU General Public License version 2 as +>> + * published by the Free Software Foundation. +>> + * +>> + * This program is distributed in the hope that it will be useful, +>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of +>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +>> + * GNU General Public License for more details. +>> + * +>> + * You should have received a copy of the GNU General Public License +>> + * along with this program. If not, see <http://www.gnu.org/licenses/>. +>> + */ +>> + +>> +#include <linux/io.h> +>> + +>> +struct extio_ops *arm64_extio_ops; +>> + +>> + +>> +BUILD_EXTIO(b, u8) +>> + +>> +BUILD_EXTIO(w, u16) +>> + +>> +BUILD_EXTIO(l, u32) +>> -- +>> 1.9.1 +>> +> +> +> diff --git a/a/content_digest b/N3/content_digest index d3eaabc..ba09669 100644 --- a/a/content_digest +++ b/N3/content_digest @@ -5,258 +5,330 @@ "Subject\0Re: [PATCH V5 1/3] ARM64 LPC: Indirect ISA port IO introduced\0" "Date\0Fri, 23 Dec 2016 09:43:55 +0800\0" "To\0Ming Lei <tom.leiming@gmail.com>\0" - "Cc\0Mark Rutland <mark.rutland@arm.com>" - gabriele.paoloni@huawei.com - Benjamin Herrenschmidt <benh@kernel.crashing.org> + "Cc\0Catalin Marinas <catalin.marinas@arm.com>" Will Deacon <will.deacon@arm.com> - linuxarm@huawei.com - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - Arnd Bergmann <arnd@arndb.de> - xuwei5@hisilicon.com - linux-serial@vger.kernel.org - Catalin Marinas <catalin.marinas@arm.com> - devicetree@vger.kernel.org <devicetree@vger.kernel.org> - minyard@acm.org - Liviu Dudau <liviu.dudau@arm.com> - john.garry@huawei.com - zourongrong@gmail.com Rob Herring <robh+dt@kernel.org> Bjorn Helgaas <bhelgaas@google.com> - kantyzc@163.com - zhichang.yuan02@gmail.com + Mark Rutland <mark.rutland@arm.com> + Olof Johansson <olof@lixom.net> + Arnd Bergmann <arnd@arndb.de> linux-arm-kernel <linux-arm-kernel@lists.infradead.org> - linux-pci@vger.kernel.org <linux-pci@vger.kernel.org> + Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Linux Kernel Mailing List <linux-kernel@vger.kernel.org> - " Olof Johansson <olof@lixom.net>\0" + <linuxarm@huawei.com> + devicetree@vger.kernel.org <devicetree@vger.kernel.org> + linux-pci@vger.kernel.org <linux-pci@vger.kernel.org> + <linux-serial@vger.kernel.org> + <minyard@acm.org> + Benjamin Herrenschmidt <benh@kernel.crashing.org> + Liviu Dudau <liviu.dudau@arm.com> + <zourongrong@gmail.com> + <john.garry@huawei.com> + <gabriele.paoloni@huawei.com> + <zhichang.yuan02@gmail.com> + <kantyzc@163.com> + " <xuwei5@hisilicon.com>\0" "\00:1\0" "b\0" - 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Most I/O accesses are achieved based on MMIO. But for some arm64 SoCs,\n" + ">> such as Hip06, when accessing some legacy ISA devices connected to LPC, those\n" + ">> known port addresses are used to control the corresponding target devices, for\n" + ">> example, 0x2f8 is for UART, 0xe4 is for ipmi-bt. It is different from the\n" + ">> normal MMIO mode in using.\n" + ">>\n" + ">> To drive these devices, this patch introduces a method named indirect-IO.\n" + ">> In this method the in/out pair in arch/arm64/include/asm/io.h will be\n" + ">> redefined. When upper layer drivers call in/out with those known legacy port\n" + ">> addresses to access the peripherals, the hooking functions corrresponding to\n" + ">> those target peripherals will be called. Through this way, those upper layer\n" + ">> drivers which depend on in/out can run on Hip06 without any changes.\n" + ">>\n" + ">> Cc: Catalin Marinas <catalin.marinas@arm.com>\n" + ">> Cc: Will Deacon <will.deacon@arm.com>\n" + ">> Signed-off-by: zhichang.yuan <yuanzhichang@hisilicon.com>\n" + ">> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>\n" + ">> ---\n" + ">> arch/arm64/Kconfig | 6 +++\n" + ">> arch/arm64/include/asm/extio.h | 94 ++++++++++++++++++++++++++++++++++++++++++\n" + ">> arch/arm64/include/asm/io.h | 29 +++++++++++++\n" + ">> arch/arm64/kernel/Makefile | 1 +\n" + ">> arch/arm64/kernel/extio.c | 27 ++++++++++++\n" + ">> 5 files changed, 157 insertions(+)\n" + "> \n" + "> When I applied these three patches against current linus tree and\n" + "> enable CONFIG_HISILICON_LPC, the following build failure[1] is\n" + "> triggered when running 'make modules'.\n" + "> \n" + "\n" + "Thanks for your report!\n" + "\n" + "This patch has compilation issue on some architectures, sorry for the inconvenience caused by this!\n" + "The ongoing v6 will solve these issues.\n" + "I will trace this failure and provide a fix if you can not wait for the next version.\n" + "\n" + "Could you send me your .config in private? I don't want to bother all the hacker in the mail-list.\n" + "\n" + "\n" + "Thanks,\n" + "Zhichang\n" + "\n" + "> \n" + "> Thanks,\n" + "> Ming\n" + "> \n" + "> [1] 'make modules' failure log\n" + "> \n" + "> Building modules, stage 2.\n" + "> MODPOST 2260 modules\n" + "> ERROR: \"inb\" [drivers/watchdog/wdt_pci.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/watchdog/wdt_pci.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/watchdog/pcwd_pci.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/watchdog/pcwd_pci.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/vgastate.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/fbdev/vt8623fb.ko] undefined!\n" + "> ERROR: \"outw\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"outb\" [drivers/video/fbdev/tridentfb.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/video/fbdev/tdfxfb.ko] undefined!\n" + "> .....\n" + "> ERROR: \"inb\" [drivers/ata/pata_cmd64x.ko] undefined!\n" + "> ERROR: \"inb\" [drivers/ata/pata_artop.ko] undefined!\n" + "> scripts/Makefile.modpost:91: recipe for target '__modpost' failed\n" + "> make[1]: *** [__modpost] Error 1\n" + "> Makefile:1196: recipe for target 'modules' failed\n" + "> make: *** [modules] Error 2\n" + "> \n" + "> \n" + ">> create mode 100644 arch/arm64/include/asm/extio.h\n" + ">> create mode 100644 arch/arm64/kernel/extio.c\n" + ">>\n" + ">> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig\n" + ">> index 969ef88..b44070b 100644\n" + ">> --- a/arch/arm64/Kconfig\n" + ">> +++ b/arch/arm64/Kconfig\n" + ">> @@ -163,6 +163,12 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN\n" + ">> config ARCH_MMAP_RND_COMPAT_BITS_MAX\n" + ">> default 16\n" + ">>\n" + ">> +config ARM64_INDIRECT_PIO\n" + ">> + bool \"access peripherals with legacy I/O port\"\n" + ">> + help\n" + ">> + Support special accessors for ISA I/O devices. This is needed for\n" + ">> + SoCs that do not support standard read/write for the ISA range.\n" + ">> +\n" + ">> config NO_IOPORT_MAP\n" + ">> def_bool y if !PCI\n" + ">>\n" + ">> diff --git a/arch/arm64/include/asm/extio.h b/arch/arm64/include/asm/extio.h\n" + ">> new file mode 100644\n" + ">> index 0000000..6ae0787\n" + ">> --- /dev/null\n" + ">> +++ b/arch/arm64/include/asm/extio.h\n" + ">> @@ -0,0 +1,94 @@\n" + ">> +/*\n" + ">> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved.\n" + ">> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com>\n" + ">> + *\n" + ">> + * This program is free software; you can redistribute it and/or modify\n" + ">> + * it under the terms of the GNU General Public License version 2 as\n" + ">> + * published by the Free Software Foundation.\n" + ">> + *\n" + ">> + * This program is distributed in the hope that it will be useful,\n" + ">> + * but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + ">> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + ">> + * GNU General Public License for more details.\n" + ">> + *\n" + ">> + * You should have received a copy of the GNU General Public License\n" + ">> + * along with this program. If not, see <http://www.gnu.org/licenses/>.\n" + ">> + */\n" + ">> +\n" + ">> +#ifndef __LINUX_EXTIO_H\n" + ">> +#define __LINUX_EXTIO_H\n" + ">> +\n" + ">> +struct extio_ops {\n" + ">> + unsigned long start;/* inclusive, sys io addr */\n" + ">> + unsigned long end;/* inclusive, sys io addr */\n" + ">> +\n" + ">> + u64 (*pfin)(void *devobj, unsigned long ptaddr, size_t dlen);\n" + ">> + void (*pfout)(void *devobj, unsigned long ptaddr, u32 outval,\n" + ">> + size_t dlen);\n" + ">> + u64 (*pfins)(void *devobj, unsigned long ptaddr, void *inbuf,\n" + ">> + size_t dlen, unsigned int count);\n" + ">> + void (*pfouts)(void *devobj, unsigned long ptaddr,\n" + ">> + const void *outbuf, size_t dlen,\n" + ">> + unsigned int count);\n" + ">> + void *devpara;\n" + ">> +};\n" + ">> +\n" + ">> +extern struct extio_ops *arm64_extio_ops;\n" + ">> +\n" + ">> +#define DECLARE_EXTIO(bw, type) \\\n" + ">> +extern type in##bw(unsigned long addr); \\\n" + ">> +extern void out##bw(type value, unsigned long addr); \\\n" + ">> +extern void ins##bw(unsigned long addr, void *buffer, unsigned int count);\\\n" + ">> +extern void outs##bw(unsigned long addr, const void *buffer, unsigned int count);\n" + ">> +\n" + ">> +#define BUILD_EXTIO(bw, type) \\\n" + ">> +type in##bw(unsigned long addr) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + return read##bw(PCI_IOBASE + addr); \\\n" + ">> + return arm64_extio_ops->pfin ? \\\n" + ">> + arm64_extio_ops->pfin(arm64_extio_ops->devpara, \\\n" + ">> + addr, sizeof(type)) : -1; \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void out##bw(type value, unsigned long addr) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + write##bw(value, PCI_IOBASE + addr); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfout) \\\n" + ">> + arm64_extio_ops->pfout(arm64_extio_ops->devpara,\\\n" + ">> + addr, value, sizeof(type)); \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void ins##bw(unsigned long addr, void *buffer, unsigned int count) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + reads##bw(PCI_IOBASE + addr, buffer, count); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfins) \\\n" + ">> + arm64_extio_ops->pfins(arm64_extio_ops->devpara,\\\n" + ">> + addr, buffer, sizeof(type), count); \\\n" + ">> +} \\\n" + ">> + \\\n" + ">> +void outs##bw(unsigned long addr, const void *buffer, unsigned int count) \\\n" + ">> +{ \\\n" + ">> + if (!arm64_extio_ops || arm64_extio_ops->start > addr || \\\n" + ">> + arm64_extio_ops->end < addr) \\\n" + ">> + writes##bw(PCI_IOBASE + addr, buffer, count); \\\n" + ">> + else \\\n" + ">> + if (arm64_extio_ops->pfouts) \\\n" + ">> + arm64_extio_ops->pfouts(arm64_extio_ops->devpara,\\\n" + ">> + addr, buffer, sizeof(type), count); \\\n" + ">> +}\n" + ">> +\n" + ">> +static inline void arm64_set_extops(struct extio_ops *ops)\n" + ">> +{\n" + ">> + if (ops)\n" + ">> + WRITE_ONCE(arm64_extio_ops, ops);\n" + ">> +}\n" + ">> +\n" + ">> +#endif /* __LINUX_EXTIO_H*/\n" + ">> diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h\n" + ">> index 0bba427..136735d 100644\n" + ">> --- a/arch/arm64/include/asm/io.h\n" + ">> +++ b/arch/arm64/include/asm/io.h\n" + ">> @@ -31,6 +31,7 @@\n" + ">> #include <asm/early_ioremap.h>\n" + ">> #include <asm/alternative.h>\n" + ">> #include <asm/cpufeature.h>\n" + ">> +#include <asm/extio.h>\n" + ">>\n" + ">> #include <xen/xen.h>\n" + ">>\n" + ">> @@ -149,6 +150,34 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)\n" + ">> #define IO_SPACE_LIMIT (PCI_IO_SIZE - 1)\n" + ">> #define PCI_IOBASE ((void __iomem *)PCI_IO_START)\n" + ">>\n" + ">> +\n" + ">> +/*\n" + ">> + * redefine the in(s)b/out(s)b for indirect-IO.\n" + ">> + */\n" + ">> +#ifdef CONFIG_ARM64_INDIRECT_PIO\n" + ">> +#define inb inb\n" + ">> +#define outb outb\n" + ">> +#define insb insb\n" + ">> +#define outsb outsb\n" + ">> +/* external declaration */\n" + ">> +DECLARE_EXTIO(b, u8)\n" + ">> +\n" + ">> +#define inw inw\n" + ">> +#define outw outw\n" + ">> +#define insw insw\n" + ">> +#define outsw outsw\n" + ">> +\n" + ">> +DECLARE_EXTIO(w, u16)\n" + ">> +\n" + ">> +#define inl inl\n" + ">> +#define outl outl\n" + ">> +#define insl insl\n" + ">> +#define outsl outsl\n" + ">> +\n" + ">> +DECLARE_EXTIO(l, u32)\n" + ">> +#endif\n" + ">> +\n" + ">> +\n" + ">> /*\n" + ">> * String version of I/O memory access operations.\n" + ">> */\n" + ">> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile\n" + ">> index 7d66bba..60e0482 100644\n" + ">> --- a/arch/arm64/kernel/Makefile\n" + ">> +++ b/arch/arm64/kernel/Makefile\n" + ">> @@ -31,6 +31,7 @@ arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \\\n" + ">> sys_compat.o entry32.o\n" + ">> arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o\n" + ">> arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o\n" + ">> +arm64-obj-$(CONFIG_ARM64_INDIRECT_PIO) += extio.o\n" + ">> arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o\n" + ">> arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o\n" + ">> arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o\n" + ">> diff --git a/arch/arm64/kernel/extio.c b/arch/arm64/kernel/extio.c\n" + ">> new file mode 100644\n" + ">> index 0000000..647b3fa\n" + ">> --- /dev/null\n" + ">> +++ b/arch/arm64/kernel/extio.c\n" + ">> @@ -0,0 +1,27 @@\n" + ">> +/*\n" + ">> + * Copyright (C) 2016 Hisilicon Limited, All Rights Reserved.\n" + ">> + * Author: Zhichang Yuan <yuanzhichang@hisilicon.com>\n" + ">> + *\n" + ">> + * This program is free software; you can redistribute it and/or modify\n" + ">> + * it under the terms of the GNU General Public License version 2 as\n" + ">> + * published by the Free Software Foundation.\n" + ">> + *\n" + ">> + * This program is distributed in the hope that it will be useful,\n" + ">> + * but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + ">> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + ">> + * GNU General Public License for more details.\n" + ">> + *\n" + ">> + * You should have received a copy of the GNU General Public License\n" + ">> + * along with this program. If not, see <http://www.gnu.org/licenses/>.\n" + ">> + */\n" + ">> +\n" + ">> +#include <linux/io.h>\n" + ">> +\n" + ">> +struct extio_ops *arm64_extio_ops;\n" + ">> +\n" + ">> +\n" + ">> +BUILD_EXTIO(b, u8)\n" + ">> +\n" + ">> +BUILD_EXTIO(w, u16)\n" + ">> +\n" + ">> +BUILD_EXTIO(l, u32)\n" + ">> --\n" + ">> 1.9.1\n" + ">>\n" + "> \n" + "> \n" + > -fed89004616937ba8e0d068d584ec9df670c49b178295e735c345268124d4f79 +147cbe1b0ba3eafaa8e79863266fdcea4aad584a4375b76e7624cb8d1cd37378
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