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authorChristoph Hellwig <hch@infradead.org>2006-01-17 13:44:29 +0000
committerJames Bottomley <jejb@mulgrave.(none)>2006-01-31 14:39:59 -0600
commit4ddce14e753fd4fe7445fa046a3aee155c2e48f4 (patch)
treec95e910366dd8412ae8be1e5f73c56aca5576044
parent7e55147fe3203b72e80186c45df9bf0fd6cd97c9 (diff)
[SCSI] fusion: add MSI support
On Mon, Jan 16, 2006 at 06:53:24PM -0700, Moore, Eric wrote: > Adding MSI support, and command line for enabling > it. By default, the command line option has MSI disabled. mpt_msi_enable is initialized to 0 implicitly, no need to do that. Also replace if (mpt_msi_enable == 1) tests with just if (mpt_msi_enable). Updated patch below: Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
-rw-r--r--drivers/message/fusion/mptbase.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 2ef64b9ada88..e352b000c7d1 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -81,6 +81,10 @@ MODULE_LICENSE("GPL");
/*
* cmd line parameters
*/
+static int mpt_msi_enable;
+module_param(mpt_msi_enable, int, 0);
+MODULE_PARM_DESC(mpt_msi_enable, " MSI Support Enable (default=0)");
+
#ifdef MFCNT
static int mfcounter = 0;
#define PRINT_MF_COUNT 20000
@@ -1444,6 +1448,9 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
ioc->pci_irq = -1;
if (pdev->irq) {
+ if (mpt_msi_enable && !pci_enable_msi(pdev))
+ printk(MYIOC_s_INFO_FMT "PCI-MSI enabled\n", ioc->name);
+
r = request_irq(pdev->irq, mpt_interrupt, SA_SHIRQ, ioc->name, ioc);
if (r < 0) {
@@ -1483,6 +1490,8 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
list_del(&ioc->list);
free_irq(ioc->pci_irq, ioc);
+ if (mpt_msi_enable)
+ pci_disable_msi(pdev);
iounmap(mem);
kfree(ioc);
pci_set_drvdata(pdev, NULL);
@@ -2136,6 +2145,8 @@ mpt_adapter_dispose(MPT_ADAPTER *ioc)
if (ioc->pci_irq != -1) {
free_irq(ioc->pci_irq, ioc);
+ if (mpt_msi_enable)
+ pci_disable_msi(ioc->pcidev);
ioc->pci_irq = -1;
}