diff options
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci.h | 26 | ||||
| -rw-r--r-- | drivers/ata/libahci.c | 7 |
2 files changed, 25 insertions, 8 deletions
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 878470f9c3e2..a4faa438889c 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -35,6 +35,7 @@ #ifndef _AHCI_H #define _AHCI_H +#include <linux/pci.h> #include <linux/clk.h> #include <linux/libata.h> #include <linux/phy/phy.h> @@ -237,12 +238,18 @@ enum { AHCI_HFLAG_DELAY_ENGINE = (1 << 15), /* do not start engine on port start (wait until error-handling stage) */ - AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */ AHCI_HFLAG_NO_DEVSLP = (1 << 17), /* no device sleep */ AHCI_HFLAG_NO_FBS = (1 << 18), /* no FBS */ AHCI_HFLAG_EDGE_IRQ = (1 << 19), /* HOST_IRQ_STAT behaves as Edge Triggered */ - AHCI_HFLAG_MULTI_MSIX = (1 << 20), /* per-port MSI-X */ +#ifdef CONFIG_PCI_MSI + AHCI_HFLAG_MULTI_MSI = (1 << 20), /* multiple PCI MSIs */ + AHCI_HFLAG_MULTI_MSIX = (1 << 21), /* per-port MSI-X */ +#else + /* compile out MSI infrastructure */ + AHCI_HFLAG_MULTI_MSI = 0, + AHCI_HFLAG_MULTI_MSIX = 0, +#endif /* ap->flags bits */ @@ -355,6 +362,21 @@ struct ahci_host_priv { void (*start_engine)(struct ata_port *ap); }; +#ifdef CONFIG_PCI_MSI +static inline int ahci_irq_vector(struct ahci_host_priv *hpriv, int port) +{ + if (hpriv->flags & AHCI_HFLAG_MULTI_MSIX) + return hpriv->msix[port].vector; + else + return hpriv->irq + port; +} +#else +static inline int ahci_irq_vector(struct ahci_host_priv *hpriv, int port) +{ + return hpriv->irq; +} +#endif + extern int ahci_ignore_sss; extern struct device_attribute *ahci_shost_attrs[]; diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 1b6c7cc415bf..eda3cf2163bb 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -2469,12 +2469,7 @@ static int ahci_host_activate_multi_irqs(struct ata_host *host, */ for (i = 0; i < host->n_ports; i++) { struct ahci_port_priv *pp = host->ports[i]->private_data; - int irq; - - if (hpriv->flags & AHCI_HFLAG_MULTI_MSIX) - irq = hpriv->msix[i].vector; - else - irq = hpriv->irq + i; + int irq = ahci_irq_vector(hpriv, i); /* Do not receive interrupts sent by dummy ports */ if (!pp) { |