diff options
| author | Vivek Mahajan <vivek.mahajan@freescale.com> | 2009-11-16 11:49:22 +0530 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-12-03 02:46:34 -0500 |
| commit | dae77214fa71898b84514e43721fb7bf260b026a (patch) | |
| tree | f439185a2b1ffe3f481ec0ae1409c0c208e540e7 /drivers/ata | |
| parent | 097dac91837b35947fffb0e303bcf71e4e4a789f (diff) | |
sata_sil24: MSI support, disabled by default
The following patch adds MSI support. Some platforms
may have broken MSI, so those are defaulted to use
legacy PCI interrupts.
Signed-off-by: Vivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/sata_sil24.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index e6946fc527d..1370df6c420 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -417,6 +417,10 @@ static struct ata_port_operations sil24_ops = { #endif }; +static int sata_sil24_msi; /* Disable MSI */ +module_param_named(msi, sata_sil24_msi, bool, S_IRUGO); +MODULE_PARM_DESC(msi, "Enable MSI (Default: false)"); + /* * Use bits 30-31 of port_flags to encode available port numbers. * Current maxium is 4. @@ -1340,6 +1344,11 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) sil24_init_controller(host); + if (sata_sil24_msi && !pci_enable_msi(pdev)) { + dev_printk(KERN_INFO, &pdev->dev, "Using MSI\n"); + pci_intx(pdev, 0); + } + pci_set_master(pdev); return ata_host_activate(host, pdev->irq, sil24_interrupt, IRQF_SHARED, &sil24_sht); |