From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hidetoshi Seto Date: Fri, 24 Mar 2006 07:48:04 +0000 Subject: [PATCH 2/6] PCIERR : interfaces for synchronous I/O error detection Message-Id: <4423A434.5070701@jp.fujitsu.com> List-Id: References: <44210D1B.7010806@jp.fujitsu.com> <20060322210157.GH12335@kroah.com> In-Reply-To: <20060322210157.GH12335@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Greg KH Cc: Linux Kernel list , linux-ia64@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz This patch is 1/4 of PCIERR implementation for IA64. This part enable us to switch IA64-specific PCIERR by config. Signed-off-by: Hidetoshi Seto ----- arch/ia64/Kconfig | 10 ++++++++++ arch/ia64/lib/Makefile | 1 + arch/ia64/lib/pcierr_check.c | 23 +++++++++++++++++++++++ include/asm-ia64/pci.h | 8 ++++++++ 4 files changed, 42 insertions(+) Index: linux-2.6.16_WORK/arch/ia64/Kconfig =================================--- linux-2.6.16_WORK.orig/arch/ia64/Kconfig +++ linux-2.6.16_WORK/arch/ia64/Kconfig @@ -410,6 +410,16 @@ bool default PCI +config PCIERR_CHECK + bool "Support pcierr interfaces for IO error detection." + depends on PCI + help + Saying Y provides pcierr infrastructure for "RAS-aware" drivers + to detect and recover some IO errors, which strongly required by + some of very-high-reliable systems. + + If you don't know what to do here, say N. + source "drivers/pci/Kconfig" source "drivers/pci/hotplug/Kconfig" Index: linux-2.6.16_WORK/arch/ia64/lib/Makefile =================================--- linux-2.6.16_WORK.orig/arch/ia64/lib/Makefile +++ linux-2.6.16_WORK/arch/ia64/lib/Makefile @@ -15,6 +15,7 @@ lib-$(CONFIG_MCKINLEY) += copy_page_mck.o memcpy_mck.o lib-$(CONFIG_PERFMON) += carta_random.o lib-$(CONFIG_MD_RAID5) += xor.o +lib-$(CONFIG_PCIERR_CHECK) += pcierr_check.o AFLAGS___divdi3.o AFLAGS___udivdi3.o = -DUNSIGNED Index: linux-2.6.16_WORK/include/asm-ia64/pci.h =================================--- linux-2.6.16_WORK.orig/include/asm-ia64/pci.h +++ linux-2.6.16_WORK/include/asm-ia64/pci.h @@ -171,4 +171,12 @@ #define pcibios_scan_all_fns(a, b) 0 +#ifdef CONFIG_PCIERR_CHECK +/* Enable ia64 pcierr - See arch/ia64/lib/pcierr_check.c */ +#define HAVE_ARCH_PCIERR_CHECK +typedef struct { + int dummy; +} iocookie; +#endif /* CONFIG_PCIERR_CHECK */ + #endif /* _ASM_IA64_PCI_H */ Index: linux-2.6.16_WORK/arch/ia64/lib/pcierr_check.c =================================--- /dev/null +++ linux-2.6.16_WORK/arch/ia64/lib/pcierr_check.c @@ -0,0 +1,23 @@ +/* + * File: pcierr_check.c + * Purpose: Implement the IA64 specific pcierr interfaces for RAS-drivers + */ + +#include + +void pcierr_clear(iocookie *cookie, struct pci_dev *dev); +int pcierr_read(iocookie *cookie); + +void pcierr_clear(iocookie *cookie, struct pci_dev *dev) +{ + /* register device etc. */ +} + +int pcierr_read(iocookie *cookie) +{ + /* check error etc. */ + return 0; +} + +EXPORT_SYMBOL(pcierr_read); +EXPORT_SYMBOL(pcierr_clear);