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ACPI, APEI, Add PCIe AER error information printing support

Browse source 
The AER error information printing support is implemented in
drivers/pci/pcie/aer/aer_print.c.  So some string constants, functions
and macros definitions can be re-used without being exported.

The original PCIe AER error information printing function is not
re-used directly because the overall format is quite different.  And
changing the original printing format may make some original users'
scripts broken.

Signed-off-by: Huang Ying <[email protected]>
CC: Jesse Barnes <[email protected]>
CC: Zhang Yanmin <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Huang Ying 2011-02-21 13:54:43 +08:00 • committed by Len Brown
commit c413d76820
7 changed files with 132 additions and 12 deletions
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7
drivers/acpi/apei/Kconfig
View file

@ -21,6 +21,13 @@ config ACPI_APEI_GHES
by firmware to produce more valuable hardware error
information for Linux.
config ACPI_APEI_PCIEAER
bool "APEI PCIe AER logging/recovering support"
depends on ACPI_APEI && PCIEAER
help
PCIe AER errors may be reported via APEI firmware first mode.
Turn on this option to enable the corresponding support.
config ACPI_APEI_EINJ
tristate "APEI Error INJection (EINJ)"
depends on ACPI_APEI && DEBUG_FS

18
drivers/acpi/apei/cper.c
View file

@ -29,6 +29,7 @@
#include <linux/time.h>
#include <linux/cper.h>
#include <linux/acpi.h>
#include <linux/aer.h>
/*
* CPER record ID need to be unique even after reboot, because record
@ -70,8 +71,8 @@ static const char *cper_severity_str(unsigned int severity)
* If the output length is longer than 80, multiple line will be
* printed, with @pfx is printed at the beginning of each line.
*/
static void cper_print_bits(const char *pfx, unsigned int bits,
const char *strs[], unsigned int strs_size)
void cper_print_bits(const char *pfx, unsigned int bits,
const char *strs[], unsigned int strs_size)
{
int i, len = 0;
const char *str;
@ -81,6 +82,8 @@ static void cper_print_bits(const char *pfx, unsigned int bits,
if (!(bits & (1U << i)))
continue;
str = strs[i];
if (!str)
continue;
if (len && len + strlen(str) + 2 > 80) {
printk("%s\n", buf);
len = 0;
@ -243,7 +246,8 @@ static const char *cper_pcie_port_type_strs[] = {
"root complex event collector",
};
static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie)
static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
const struct acpi_hest_generic_data *gdata)
{
if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE)
printk("%s""port_type: %d, %s\n", pfx, pcie->port_type,
@ -276,6 +280,12 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie)
printk(
"%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
pfx, pcie->bridge.secondary_status, pcie->bridge.control);
#ifdef CONFIG_ACPI_APEI_PCIEAER
if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) {
struct aer_capability_regs *aer_regs = (void *)pcie->aer_info;
cper_print_aer(pfx, gdata->error_severity, aer_regs);
}
#endif
}
static const char *apei_estatus_section_flag_strs[] = {
@ -322,7 +332,7 @@ static void apei_estatus_print_section(
struct cper_sec_pcie *pcie = (void *)(gdata + 1);
printk("%s""section_type: PCIe error\n", pfx);
if (gdata->error_data_length >= sizeof(*pcie))
cper_print_pcie(pfx, pcie);
cper_print_pcie(pfx, pcie, gdata);
else
goto err_section_too_small;
} else