IB/ipath: Indicate a couple of chip bugs to userspace

A couple of chip bugs in the iba6110 and in the iba6120 are not in more
recent chips.  This first bug swaps two of the pioavail register
locations.  In the second bug, the chip can sometimes forget to dma the
pio avail register to memory.  We indicate the presence of these bugs
with runtime flags and we indicate the presence of the flags by bumping
the SWMINOR.

Signed-off-by: Arthur Jones <arthur.jones@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

3 files changed, 7 insertions, 3 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_common.h b/drivers/infiniband/hw/ipath/ipath_common.h
index 6ad822c35930..851df8a75e79 100644
--- a/drivers/infiniband/hw/ipath/ipath_common.h
+++ b/drivers/infiniband/hw/ipath/ipath_common.h
@@ -189,6 +189,8 @@ typedef enum _ipath_ureg {
 #define IPATH_RUNTIME_RCVHDR_COPY       0x8
 #define IPATH_RUNTIME_MASTER    0x10
 /* 0x20 and 0x40 are no longer used, but are reserved for ABI compatibility */
+#define IPATH_RUNTIME_FORCE_PIOAVAIL 0x400
+#define IPATH_RUNTIME_PIO_REGSWAPPED 0x800
 
 /*
  * This structure is returned by ipath_userinit() immediately after
@@ -350,7 +352,7 @@ struct ipath_base_info {
  * may not be implemented; the user code must deal with this if it
  * cares, or it must abort after initialization reports the difference.
  */
-#define IPATH_USER_SWMINOR 5
+#define IPATH_USER_SWMINOR 6
 
 #define IPATH_USER_SWVERSION ((IPATH_USER_SWMAJOR<<16) | IPATH_USER_SWMINOR)
 
diff --git a/drivers/infiniband/hw/ipath/ipath_iba6110.c b/drivers/infiniband/hw/ipath/ipath_iba6110.c
index d4940beb58c7..df42a1e3b6b7 100644
--- a/drivers/infiniband/hw/ipath/ipath_iba6110.c
+++ b/drivers/infiniband/hw/ipath/ipath_iba6110.c
@@ -1599,7 +1599,8 @@ static int ipath_ht_get_base_info(struct ipath_portdata *pd, void *kbase)
 {
         struct ipath_base_info *kinfo = kbase;
 
-        kinfo->spi_runtime_flags |= IPATH_RUNTIME_HT;
+        kinfo->spi_runtime_flags |= IPATH_RUNTIME_HT |
+                IPATH_RUNTIME_PIO_REGSWAPPED;
 
         if (pd->port_dd->ipath_minrev < 4)
                 kinfo->spi_runtime_flags |= IPATH_RUNTIME_RCVHDR_COPY;
diff --git a/drivers/infiniband/hw/ipath/ipath_iba6120.c b/drivers/infiniband/hw/ipath/ipath_iba6120.c
index d43f0b3a43fe..0103d6f4847b 100644
--- a/drivers/infiniband/hw/ipath/ipath_iba6120.c
+++ b/drivers/infiniband/hw/ipath/ipath_iba6120.c
@@ -1348,7 +1348,8 @@ static int ipath_pe_get_base_info(struct ipath_portdata *pd, void *kbase)
         dd = pd->port_dd;
 
 done:
-        kinfo->spi_runtime_flags |= IPATH_RUNTIME_PCIE;
+        kinfo->spi_runtime_flags |= IPATH_RUNTIME_PCIE |
+                IPATH_RUNTIME_FORCE_PIOAVAIL | IPATH_RUNTIME_PIO_REGSWAPPED;
         return 0;
 }