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[SCSI] mpt2sas: Added support for PCIe Advanced Error Recovery.

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Added support in the driver to support EEH and
PCIe Advanced Error Recovery. This involves adding new
pci_error_handler interface for recovering the controller from PCI Bus
errors, such as SERR and PERR. Some tools are available for simulating
PCI errors in order to validate this interface:
http://www.kernel.org/pub/linux/utils/pci/aer-inject

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Kashyap, Desai
2010-04-05 14:20:07 +05:30
committed by James Bottomley
parent ebda4d38df
commit ef7c80c1f1
2 changed files with 124 additions and 0 deletions
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6
drivers/scsi/mpt2sas/mpt2sas_base.c
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@@ -58,6 +58,7 @@
#include <linux/sort.h>
#include <linux/io.h>
#include <linux/time.h>
#include <linux/aer.h>
#include "mpt2sas_base.h"
@@ -1256,6 +1257,9 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
goto out_fail;
}
/* AER (Advanced Error Reporting) hooks */
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
if (_base_config_dma_addressing(ioc, pdev) != 0) {
@@ -1311,6 +1315,7 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
ioc->chip_phys = 0;
ioc->pci_irq = -1;
pci_release_selected_regions(ioc->pdev, ioc->bars);
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
return r;
}
@@ -3547,6 +3552,7 @@ mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
ioc->pci_irq = -1;
ioc->chip_phys = 0;
pci_release_selected_regions(ioc->pdev, ioc->bars);
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
return;
}