eHEA: Introducing support vor DLPAR memory add

This patch adds support for DLPAR memory add to the eHEA driver. To detect
whether memory was added the driver uses its own memory mapping table and
checks for kernel addresses whether they're located in already known memory
sections. If not the function ehea_rereg_mrs() is triggered which performs
a rebuild of the mapping table and a re-registration of the global memory
region.

Signed-off-by: Thomas Klein <tklein@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 18 insertions, 5 deletions

diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index f03f070451de..6628fa622e2c 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -39,13 +39,13 @@
 #include <asm/io.h>
 
 #define DRV_NAME        "ehea"
-#define DRV_VERSION     "EHEA_0067"
+#define DRV_VERSION     "EHEA_0070"
 
-/* EHEA capability flags */
+/* eHEA capability flags */
 #define DLPAR_PORT_ADD_REM 1
-#define DLPAR_MEM_ADD 2
-#define DLPAR_MEM_REM 4
-#define EHEA_CAPABILITIES (DLPAR_PORT_ADD_REM)
+#define DLPAR_MEM_ADD      2
+#define DLPAR_MEM_REM      4
+#define EHEA_CAPABILITIES  (DLPAR_PORT_ADD_REM)
 
 #define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \
         | NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
@@ -113,6 +113,8 @@
 /* Memory Regions */
 #define EHEA_MR_ACC_CTRL       0x00800000
 
+#define EHEA_BUSMAP_START      0x8000000000000000ULL
+
 #define EHEA_WATCH_DOG_TIMEOUT 10*HZ
 
 /* utility functions */
@@ -186,6 +188,12 @@ struct h_epas {
                                    set to 0 if unused */
 };
 
+struct ehea_busmap {
+        unsigned int entries;           /* total number of entries */
+        unsigned int valid_sections;    /* number of valid sections */
+        u64 *vaddr;
+};
+
 struct ehea_qp;
 struct ehea_cq;
 struct ehea_eq;
@@ -382,6 +390,8 @@ struct ehea_adapter {
         struct ehea_mr mr;
         u32 pd;                    /* protection domain */
         u64 max_mc_mac;            /* max number of multicast mac addresses */
+        int active_ports;
+        struct list_head list;
 };
 
 
@@ -431,6 +441,9 @@ struct port_res_cfg {
         int max_entries_rq3;
 };
 
+enum ehea_flag_bits {
+        __EHEA_STOP_XFER
+};
 
 void ehea_set_ethtool_ops(struct net_device *netdev);
 int ehea_sense_port_attr(struct ehea_port *port);