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scsi: smartpqi: set pci completion timeout 

add support for setting PCIe completion timeout.

Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kevin Barnett 2017-05-03 18:52:34 -05:00 committed by Martin K. Petersen
parent 98bf061b0b
commit a81ed5f338
1 changed files with 18 additions and 0 deletions
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18
drivers/scsi/smartpqi/smartpqi_init.c
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@ -5437,6 +5437,13 @@ static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
return 0;
}
static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
u16 timeout)
{
return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
}
static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
{
int rc;
@ -5480,6 +5487,17 @@ static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
ctrl_info->registers = ctrl_info->iomem_base;
ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
/* Increase the PCIe completion timeout. */
rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
if (rc) {
dev_err(&ctrl_info->pci_dev->dev,
"failed to set PCIe completion timeout\n");
goto release_regions;
}
/* Enable bus mastering. */
pci_set_master(ctrl_info->pci_dev);