1 files changed, 54 insertions, 46 deletions

diff --git a/include/linux/rio.h b/include/linux/rio.h
index 0bed941f9b1..ff681ebba58 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -66,14 +66,62 @@
 
 #define RIO_PW_MSG_SIZE         64
 
+/*
+ * A component tag value (stored in the component tag CSR) is used as device's
+ * unique identifier assigned during enumeration. Besides being used for
+ * identifying switches (which do not have device ID register), it also is used
+ * by error management notification and therefore has to be assigned
+ * to endpoints as well.
+ */
+#define RIO_CTAG_RESRVD 0xfffe0000 /* Reserved */
+#define RIO_CTAG_UDEVID 0x0001ffff /* Unique device identifier */
+
 extern struct bus_type rio_bus_type;
 extern struct device rio_bus;
 extern struct list_head rio_devices;    /* list of all devices */
 
 struct rio_mport;
+struct rio_dev;
 union rio_pw_msg;
 
 /**
+ * struct rio_switch - RIO switch info
+ * @node: Node in global list of switches
+ * @switchid: Switch ID that is unique across a network
+ * @route_table: Copy of switch routing table
+ * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
+ * @add_entry: Callback for switch-specific route add function
+ * @get_entry: Callback for switch-specific route get function
+ * @clr_table: Callback for switch-specific clear route table function
+ * @set_domain: Callback for switch-specific domain setting function
+ * @get_domain: Callback for switch-specific domain get function
+ * @em_init: Callback for switch-specific error management init function
+ * @em_handle: Callback for switch-specific error management handler function
+ * @sw_sysfs: Callback that initializes switch-specific sysfs attributes
+ * @nextdev: Array of per-port pointers to the next attached device
+ */
+struct rio_switch {
+        struct list_head node;
+        u16 switchid;
+        u8 *route_table;
+        u32 port_ok;
+        int (*add_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
+                          u16 table, u16 route_destid, u8 route_port);
+        int (*get_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
+                          u16 table, u16 route_destid, u8 *route_port);
+        int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount,
+                          u16 table);
+        int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
+                           u8 sw_domain);
+        int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
+                           u8 *sw_domain);
+        int (*em_init) (struct rio_dev *dev);
+        int (*em_handle) (struct rio_dev *dev, u8 swport);
+        int (*sw_sysfs) (struct rio_dev *dev, int create);
+        struct rio_dev *nextdev[0];
+};
+
+/**
  * struct rio_dev - RIO device info
  * @global_list: Node in list of all RIO devices
  * @net_list: Node in list of RIO devices in a network
@@ -93,13 +141,14 @@ union rio_pw_msg;
  * @phys_efptr: RIO device extended features pointer
  * @em_efptr: RIO Error Management features pointer
  * @dma_mask: Mask of bits of RIO address this device implements
- * @rswitch: Pointer to &struct rio_switch if valid for this device
  * @driver: Driver claiming this device
  * @dev: Device model device
  * @riores: RIO resources this device owns
  * @pwcback: port-write callback function for this device
- * @destid: Network destination ID
+ * @destid: Network destination ID (or associated destid for switch)
+ * @hopcount: Hopcount to this device
  * @prev: Previous RIO device connected to the current one
+ * @rswitch: struct rio_switch (if valid for this device)
  */
 struct rio_dev {
         struct list_head global_list;   /* node in list of all RIO devices */
@@ -120,18 +169,20 @@ struct rio_dev {
         u32 phys_efptr;
         u32 em_efptr;
         u64 dma_mask;
-        struct rio_switch *rswitch;     /* RIO switch info */
         struct rio_driver *driver;      /* RIO driver claiming this device */
         struct device dev;      /* LDM device structure */
         struct resource riores[RIO_MAX_DEV_RESOURCES];
         int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step);
         u16 destid;
+        u8 hopcount;
         struct rio_dev *prev;
+        struct rio_switch rswitch[0];   /* RIO switch info */
 };
 
 #define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
 #define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
 #define to_rio_dev(n) container_of(n, struct rio_dev, dev)
+#define sw_to_rio_dev(n) container_of(n, struct rio_dev, rswitch[0])
 
 /**
  * struct rio_msg - RIO message event
@@ -224,49 +275,6 @@ struct rio_net {
 #define RIO_SW_SYSFS_CREATE     1       /* Create switch attributes */
 #define RIO_SW_SYSFS_REMOVE     0       /* Remove switch attributes */
 
-/**
- * struct rio_switch - RIO switch info
- * @node: Node in global list of switches
- * @rdev: Associated RIO device structure
- * @switchid: Switch ID that is unique across a network
- * @hopcount: Hopcount to this switch
- * @destid: Associated destid in the path
- * @route_table: Copy of switch routing table
- * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
- * @add_entry: Callback for switch-specific route add function
- * @get_entry: Callback for switch-specific route get function
- * @clr_table: Callback for switch-specific clear route table function
- * @set_domain: Callback for switch-specific domain setting function
- * @get_domain: Callback for switch-specific domain get function
- * @em_init: Callback for switch-specific error management initialization function
- * @em_handle: Callback for switch-specific error management handler function
- * @sw_sysfs: Callback that initializes switch-specific sysfs attributes
- * @nextdev: Array of per-port pointers to the next attached device
- */
-struct rio_switch {
-        struct list_head node;
-        struct rio_dev *rdev;
-        u16 switchid;
-        u16 hopcount;
-        u16 destid;
-        u8 *route_table;
-        u32 port_ok;
-        int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
-                          u16 table, u16 route_destid, u8 route_port);
-        int (*get_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
-                          u16 table, u16 route_destid, u8 * route_port);
-        int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount,
-                          u16 table);
-        int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
-                           u8 sw_domain);
-        int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
-                           u8 *sw_domain);
-        int (*em_init) (struct rio_dev *dev);
-        int (*em_handle) (struct rio_dev *dev, u8 swport);
-        int (*sw_sysfs) (struct rio_dev *dev, int create);
-        struct rio_dev *nextdev[0];
-};
-
 /* Low-level architecture-dependent routines */
 
 /**