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linux-sg2042/drivers/pci/pcie/aer/aerdrv.h

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PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
/*
* Copyright (C) 2006 Intel Corp.
* Tom Long Nguyen (tom.l.nguyen@intel.com)
* Zhang Yanmin (yanmin.zhang@intel.com)
*
*/
#ifndef _AERDRV_H_
#define _AERDRV_H_
Detach sched.h from mm.h First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-21 05:22:52 +08:00
#include <linux/workqueue.h>
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
#include <linux/pcieport_if.h>
#include <linux/aer.h>
PCI: PCIE AER: export aer_irq This is used by PCIE AER error injection to fake an PCI AER interrupt. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-24 10:45:23 +08:00
#include <linux/interrupt.h>
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
#define AER_NONFATAL 0
#define AER_FATAL 1
#define AER_CORRECTABLE 2
/* Root Error Status Register Bits */
PCI: pcie, aer: checkpatch style cleanup in pcie/aer/* Before: drivers/pci/pcie/aer/aer_inject.c total: 4 errors, 4 warnings, 473 lines checked drivers/pci/pcie/aer/aerdrv.c total: 5 errors, 2 warnings, 333 lines checked drivers/pci/pcie/aer/aerdrv.h total: 1 errors, 0 warnings, 139 lines checked drivers/pci/pcie/aer/aerdrv_core.c total: 4 errors, 3 warnings, 872 lines checked drivers/pci/pcie/aer/aerdrv_errprint.c total: 12 errors, 11 warnings, 248 lines checked After: drivers/pci/pcie/aer/aer_inject.c total: 0 errors, 0 warnings, 466 lines checked drivers/pci/pcie/aer/aerdrv.c total: 0 errors, 0 warnings, 335 lines checked drivers/pci/pcie/aer/aerdrv.h total: 0 errors, 0 warnings, 139 lines checked drivers/pci/pcie/aer/aerdrv_core.c total: 0 errors, 0 warnings, 869 lines checked drivers/pci/pcie/aer/aerdrv_errprint.c total: 0 errors, 10 warnings, 247 lines checked Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-07 16:07:29 +08:00
#define ROOT_ERR_STATUS_MASKS 0x0f
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
#define SYSTEM_ERROR_INTR_ON_MESG_MASK (PCI_EXP_RTCTL_SECEE| \
PCI_EXP_RTCTL_SENFEE| \
PCI_EXP_RTCTL_SEFEE)
#define ROOT_PORT_INTR_ON_MESG_MASK (PCI_ERR_ROOT_CMD_COR_EN| \
PCI_ERR_ROOT_CMD_NONFATAL_EN| \
PCI_ERR_ROOT_CMD_FATAL_EN)
#define ERR_COR_ID(d) (d & 0xffff)
#define ERR_UNCOR_ID(d) (d >> 16)
#define AER_SUCCESS 0
#define AER_UNSUCCESS 1
#define AER_ERROR_SOURCES_MAX 100
#define AER_LOG_TLP_MASKS (PCI_ERR_UNC_POISON_TLP| \
PCI_ERR_UNC_ECRC| \
PCI_ERR_UNC_UNSUP| \
PCI_ERR_UNC_COMP_ABORT| \
PCI_ERR_UNC_UNX_COMP| \
PCI_ERR_UNC_MALF_TLP)
/* AER Error Info Flags */
#define AER_TLP_HEADER_VALID_FLAG 0x00000001
#define AER_MULTI_ERROR_VALID_FLAG 0x00000002
struct header_log_regs {
unsigned int dw0;
unsigned int dw1;
unsigned int dw2;
unsigned int dw3;
};
PCI AER: multiple error support When a root port receives the same errors more than once before the kernel process them, the Multiple Error Messages Received flags are set by hardware. Because the root port could only save one kind of correctable error source id and another uncorrectable error source id at the same time, the second message sender id is lost if the 2 messages are sent from 2 different devices. This patch makes the kernel search all devices under the root port when multiple messages are received. Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-16 13:35:16 +08:00
#define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
struct aer_err_info {
PCI AER: multiple error support When a root port receives the same errors more than once before the kernel process them, the Multiple Error Messages Received flags are set by hardware. Because the root port could only save one kind of correctable error source id and another uncorrectable error source id at the same time, the second message sender id is lost if the 2 messages are sent from 2 different devices. This patch makes the kernel search all devices under the root port when multiple messages are received. Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-16 13:35:16 +08:00
struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
int error_dev_num;
PCI AER: support invalid error source IDs When the bus id part of error source id is equal to 0 or nosourceid=1, make the kernel probe the AER status registers of all devices under the root port to find the initial error reporter. Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-16 13:35:11 +08:00
u16 id;
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
int severity; /* 0:NONFATAL | 1:FATAL | 2:COR */
int flags;
PCI: pcie, aer: report multiple/first error on a device Multiple bits might be set in the Uncorrectable Error Status register. But aer_print_error_source() only report a error of the lowest bit set in the error status register. So print strings for all bits unmasked and set. And check First Error Pointer to mark the error occured first. This FEP is not valid when the corresponing bit of the Uncorrectable Error Status register is not set, or unimplemented or undefined. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-07 16:13:42 +08:00
int first;
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
unsigned int status; /* COR/UNCOR Error Status */
PCI: pcie, aer: refer mask state in mask register properly ERR_{,UN}CORRECTABLE_ERROR_MASK are set of error bits which linux know, set of PCI_ERR_COR_* and PCI_ERR_UNC_* defined in linux/pci_regs.h. This masks make aerdrv not to report errors of unknown bit, while aerdrv have ability to report such undefined errors as "Unknown Error Bit %2d". OTOH aerdrv_errprint does not have any check of setting in mask register. So it could report masked wrong error by finding bit in status without knowing that the bit is masked in the mask register. This patch changes aerdrv to use mask state in mask register propely instead of defined/hardcoded ERR_{,UN}CORRECTABLE_ERROR_MASK. This change prevents aerdrv from reporting masked error, and also enable reporting unknown errors. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-07 16:12:25 +08:00
unsigned int mask; /* COR/UNCOR Error Mask */
PCI: pcie, aer: checkpatch style cleanup in pcie/aer/* Before: drivers/pci/pcie/aer/aer_inject.c total: 4 errors, 4 warnings, 473 lines checked drivers/pci/pcie/aer/aerdrv.c total: 5 errors, 2 warnings, 333 lines checked drivers/pci/pcie/aer/aerdrv.h total: 1 errors, 0 warnings, 139 lines checked drivers/pci/pcie/aer/aerdrv_core.c total: 4 errors, 3 warnings, 872 lines checked drivers/pci/pcie/aer/aerdrv_errprint.c total: 12 errors, 11 warnings, 248 lines checked After: drivers/pci/pcie/aer/aer_inject.c total: 0 errors, 0 warnings, 466 lines checked drivers/pci/pcie/aer/aerdrv.c total: 0 errors, 0 warnings, 335 lines checked drivers/pci/pcie/aer/aerdrv.h total: 0 errors, 0 warnings, 139 lines checked drivers/pci/pcie/aer/aerdrv_core.c total: 0 errors, 0 warnings, 869 lines checked drivers/pci/pcie/aer/aerdrv_errprint.c total: 0 errors, 10 warnings, 247 lines checked Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-07 16:07:29 +08:00
struct header_log_regs tlp; /* TLP Header */
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
};
struct aer_err_source {
unsigned int status;
unsigned int id;
};
struct aer_rpc {
struct pcie_device *rpd; /* Root Port device */
struct work_struct dpc_handler;
struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX];
unsigned short prod_idx; /* Error Producer Index */
unsigned short cons_idx; /* Error Consumer Index */
int isr;
spinlock_t e_lock; /*
* Lock access to Error Status/ID Regs
* and error producer/consumer index
*/
struct mutex rpc_mutex; /*
* only one thread could do
* recovery on the same
Fix typos concerning hierarchy heirarchical, hierachical -> hierarchical heirarchy, hierachy -> hierarchy Signed-off-by: Uwe Kleine-König <zeisberg@informatik.uni-freiburg.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-02-18 02:23:03 +08:00
* root port hierarchy
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
*/
wait_queue_head_t wait_release;
};
struct aer_broadcast_data {
enum pci_channel_state state;
enum pci_ers_result result;
};
static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
enum pci_ers_result new)
{
PCI: Fix pci-e port driver slot_reset bad default return value When an upstream port reports an AER error to root port, kernel starts error recovery procedures. The default return value of function pcie_portdrv_slot_reset is PCI_ERS_RESULT_NONE. If all port service drivers of the downstream port under the upstream port have no slot_reset method in pci_error_handlers, AER recovery would stop without resume. Below patch against 2.6.30-rc3 fixes it. Signed-off-by: Zhang Yanmin <yanmin.zhang@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-30 14:48:29 +08:00
if (new == PCI_ERS_RESULT_NONE)
return orig;
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
switch (orig) {
case PCI_ERS_RESULT_CAN_RECOVER:
case PCI_ERS_RESULT_RECOVERED:
orig = new;
break;
case PCI_ERS_RESULT_DISCONNECT:
if (new == PCI_ERS_RESULT_NEED_RESET)
orig = new;
break;
default:
break;
}
return orig;
}
extern struct bus_type pcie_port_bus_type;
extern void aer_enable_rootport(struct aer_rpc *rpc);
extern void aer_delete_rootport(struct aer_rpc *rpc);
extern int aer_init(struct pcie_device *dev);
WorkStruct: Pass the work_struct pointer instead of context data Pass the work_struct pointer to the work function rather than context data. The work function can use container_of() to work out the data. For the cases where the container of the work_struct may go away the moment the pending bit is cleared, it is made possible to defer the release of the structure by deferring the clearing of the pending bit. To make this work, an extra flag is introduced into the management side of the work_struct. This governs auto-release of the structure upon execution. Ordinarily, the work queue executor would release the work_struct for further scheduling or deallocation by clearing the pending bit prior to jumping to the work function. This means that, unless the driver makes some guarantee itself that the work_struct won't go away, the work function may not access anything else in the work_struct or its container lest they be deallocated.. This is a problem if the auxiliary data is taken away (as done by the last patch). However, if the pending bit is *not* cleared before jumping to the work function, then the work function *may* access the work_struct and its container with no problems. But then the work function must itself release the work_struct by calling work_release(). In most cases, automatic release is fine, so this is the default. Special initiators exist for the non-auto-release case (ending in _NAR). Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-22 22:55:48 +08:00
extern void aer_isr(struct work_struct *work);
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
extern void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
PCI: PCIE AER: export aer_irq This is used by PCIE AER error injection to fake an PCI AER interrupt. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-24 10:45:23 +08:00
extern irqreturn_t aer_irq(int irq, void *context);
PCI: fix AER driver error information Below patch fixes aer driver error information and enables aer driver although CONFIG_ACPI=n. As a matter of fact, the new patch is created from below 2 patches plus a minor patch apply fuzz fixing. Because the second patch fixed a compilation error introduced by the first patch, I merge them to facilitate bisect. 1) http://marc.info/?l=linux-kernel&m=117783233918191&w=2; 2) http://marc.info/?l=linux-mm-commits&m=118046936720790&w=2 Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-06-06 11:44:16 +08:00
#ifdef CONFIG_ACPI
extern int aer_osc_setup(struct pcie_device *pciedev);
#else
static inline int aer_osc_setup(struct pcie_device *pciedev)
{
return 0;
}
#endif
PCI-Express AER implemetation: AER core and aerdriver Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-31 15:21:33 +08:00
PCI: pcie, aer: checkpatch style cleanup in pcie/aer/* Before: drivers/pci/pcie/aer/aer_inject.c total: 4 errors, 4 warnings, 473 lines checked drivers/pci/pcie/aer/aerdrv.c total: 5 errors, 2 warnings, 333 lines checked drivers/pci/pcie/aer/aerdrv.h total: 1 errors, 0 warnings, 139 lines checked drivers/pci/pcie/aer/aerdrv_core.c total: 4 errors, 3 warnings, 872 lines checked drivers/pci/pcie/aer/aerdrv_errprint.c total: 12 errors, 11 warnings, 248 lines checked After: drivers/pci/pcie/aer/aer_inject.c total: 0 errors, 0 warnings, 466 lines checked drivers/pci/pcie/aer/aerdrv.c total: 0 errors, 0 warnings, 335 lines checked drivers/pci/pcie/aer/aerdrv.h total: 0 errors, 0 warnings, 139 lines checked drivers/pci/pcie/aer/aerdrv_core.c total: 0 errors, 0 warnings, 869 lines checked drivers/pci/pcie/aer/aerdrv_errprint.c total: 0 errors, 10 warnings, 247 lines checked Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-07 16:07:29 +08:00
#endif /* _AERDRV_H_ */