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Diffstat (limited to 'drivers/ata/ahci.h')
-rw-r--r--drivers/ata/ahci.h27
1 files changed, 25 insertions, 2 deletions
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 45586c1..a4faa43 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>
@@ -237,11 +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 */
+#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 */
@@ -308,7 +316,6 @@ struct ahci_port_priv {
unsigned int ncq_saw_d2h:1;
unsigned int ncq_saw_dmas:1;
unsigned int ncq_saw_sdb:1;
- atomic_t intr_status; /* interrupts to handle */
spinlock_t lock; /* protects parent ata_port */
u32 intr_mask; /* interrupts to enable */
bool fbs_supported; /* set iff FBS is supported */
@@ -343,6 +350,7 @@ struct ahci_host_priv {
* the PHY position in this array.
*/
struct phy **phys;
+ struct msix_entry *msix; /* Optional MSI-X support */
unsigned nports; /* Number of ports */
void *plat_data; /* Other platform data */
unsigned int irq; /* interrupt line */
@@ -354,6 +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[];
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