ipr: differentiate pci-x and pci-e based adapters

MSI has only been tested on and known to work with PCI-E based adapters.  This
patch adds a field to struct ipr_chip_t to indicate which type of interrupt to
use based on what is known about the chip.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 2d9269b26f88..4b63dd6b1c81 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -1025,6 +1025,9 @@ struct ipr_chip_cfg_t {
 struct ipr_chip_t {
         u16 vendor;
         u16 device;
+        u16 intr_type;
+#define IPR_USE_LSI                     0x00
+#define IPR_USE_MSI                     0x01
         const struct ipr_chip_cfg_t *cfg;
 };
 
@@ -1160,6 +1163,7 @@ struct ipr_ioa_cfg {
 
         unsigned int transop_timeout;
         const struct ipr_chip_cfg_t *chip_cfg;
+        const struct ipr_chip_t *ipr_chip;
 
         void __iomem *hdw_dma_regs;     /* iomapped PCI memory space */
         unsigned long hdw_dma_regs_pci; /* raw PCI memory space */