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| author | Prakash, Sathya <sathya.prakash@lsi.com> | 2008-03-07 15:53:21 +0530 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-04-07 12:15:43 -0500 |
| commit | 23a274c8a5adafc74a66f16988776fc7dd6f6e51 (patch) | |
| tree | 9cae17ade000db17efeee4587bc6ab65632302ea | |
| parent | 74b2e047ecda7a82c3327a0d0bb45ee2ccf301ca (diff) | |
| download | op-kernel-dev-23a274c8a5adafc74a66f16988776fc7dd6f6e51.zip op-kernel-dev-23a274c8a5adafc74a66f16988776fc7dd6f6e51.tar.gz | |
[SCSI] mpt fusion: Enable MSI by default for SAS controllers
This patch modifies the driver to enable MSI by default for all SAS chips.
Signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| -rw-r--r-- | drivers/message/fusion/mptbase.c | 17 | ||||
| -rw-r--r-- | drivers/message/fusion/mptbase.h | 1 |
2 files changed, 13 insertions, 5 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index c6be6eb..6ee5876 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -79,7 +79,7 @@ MODULE_VERSION(my_VERSION); /* * cmd line parameters */ -static int mpt_msi_enable; +static int mpt_msi_enable = -1; module_param(mpt_msi_enable, int, 0); MODULE_PARM_DESC(mpt_msi_enable, " MSI Support Enable (default=0)"); @@ -1686,6 +1686,11 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) ioc->bus_type = SAS; } + if (ioc->bus_type == SAS && mpt_msi_enable == -1) + ioc->msi_enable = 1; + else + ioc->msi_enable = mpt_msi_enable; + if (ioc->errata_flag_1064) pci_disable_io_access(pdev); @@ -2057,15 +2062,17 @@ mpt_do_ioc_recovery(MPT_ADAPTER *ioc, u32 reason, int sleepFlag) if ((ret == 0) && (reason == MPT_HOSTEVENT_IOC_BRINGUP)) { ioc->pci_irq = -1; if (ioc->pcidev->irq) { - if (mpt_msi_enable && !pci_enable_msi(ioc->pcidev)) + if (ioc->msi_enable && !pci_enable_msi(ioc->pcidev)) printk(MYIOC_s_INFO_FMT "PCI-MSI enabled\n", ioc->name); + else + ioc->msi_enable = 0; rc = request_irq(ioc->pcidev->irq, mpt_interrupt, IRQF_SHARED, ioc->name, ioc); if (rc < 0) { printk(MYIOC_s_ERR_FMT "Unable to allocate " "interrupt %d!\n", ioc->name, ioc->pcidev->irq); - if (mpt_msi_enable) + if (ioc->msi_enable) pci_disable_msi(ioc->pcidev); return -EBUSY; } @@ -2261,7 +2268,7 @@ mpt_do_ioc_recovery(MPT_ADAPTER *ioc, u32 reason, int sleepFlag) out: if ((ret != 0) && irq_allocated) { free_irq(ioc->pci_irq, ioc); - if (mpt_msi_enable) + if (ioc->msi_enable) pci_disable_msi(ioc->pcidev); } return ret; @@ -2443,7 +2450,7 @@ mpt_adapter_dispose(MPT_ADAPTER *ioc) if (ioc->pci_irq != -1) { free_irq(ioc->pci_irq, ioc); - if (mpt_msi_enable) + if (ioc->msi_enable) pci_disable_msi(ioc->pcidev); ioc->pci_irq = -1; } diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h index caadc68..50c0c17 100644 --- a/drivers/message/fusion/mptbase.h +++ b/drivers/message/fusion/mptbase.h @@ -630,6 +630,7 @@ typedef struct _MPT_ADAPTER int mtrr_reg; struct pci_dev *pcidev; /* struct pci_dev pointer */ int bars; /* bitmask of BAR's that must be configured */ + int msi_enable; u8 __iomem *memmap; /* mmap address */ struct Scsi_Host *sh; /* Scsi Host pointer */ SpiCfgData spi_data; /* Scsi config. data */ |
