Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 83 insertions, 47 deletions

diff --git a/include/linux/rio.h b/include/linux/rio.h
index bd6eb0ed34a7..4d50611112ba 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -24,6 +24,7 @@
 #define RIO_NO_HOPCOUNT         -1
 #define RIO_INVALID_DESTID      0xffff
 
+#define RIO_MAX_MPORTS          8
 #define RIO_MAX_MPORT_RESOURCES 16
 #define RIO_MAX_DEV_RESOURCES   16
 
@@ -66,13 +67,62 @@
 
 #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
@@ -92,12 +142,14 @@ 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 */
@@ -111,24 +163,27 @@ struct rio_dev {
         u16 asm_rev;
         u16 efptr;
         u32 pef;
-        u32 swpinfo;            /* Only used for switches */
+        u32 swpinfo;
         u32 src_ops;
         u32 dst_ops;
         u32 comp_tag;
         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
@@ -174,6 +229,7 @@ enum rio_phy_type {
  * @index: Port index, unique among all port interfaces of the same type
  * @sys_size: RapidIO common transport system size
  * @phy_type: RapidIO phy type
+ * @phys_efptr: RIO port extended features pointer
  * @name: Port name string
  * @priv: Master port private data
  */
@@ -186,7 +242,7 @@ struct rio_mport {
         struct rio_msg inb_msg[RIO_MAX_MBOX];
         struct rio_msg outb_msg[RIO_MAX_MBOX];
         int host_deviceid;      /* Host device ID */
-        struct rio_ops *ops;    /* maintenance transaction functions */
+        struct rio_ops *ops;    /* low-level architecture-dependent routines */
         unsigned char id;       /* port ID, unique among all ports */
         unsigned char index;    /* port index, unique among all port
                                    interfaces of the same type */
@@ -195,6 +251,7 @@ struct rio_mport {
                                  * 1 - Large size, 65536 devices.
                                  */
         enum rio_phy_type phy_type;     /* RapidIO phy type */
+        u32 phys_efptr;
         unsigned char name[40];
         void *priv;             /* Master port private data */
 };
@@ -215,42 +272,9 @@ struct rio_net {
         unsigned char id;       /* RIO network ID */
 };
 
-/**
- * struct rio_switch - RIO switch info
- * @node: Node in global list of switches
- * @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
- */
-struct rio_switch {
-        struct list_head node;
-        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);
-};
+/* Definitions used by switch sysfs initialization callback */
+#define RIO_SW_SYSFS_CREATE     1       /* Create switch attributes */
+#define RIO_SW_SYSFS_REMOVE     0       /* Remove switch attributes */
 
 /* Low-level architecture-dependent routines */
 
@@ -262,6 +286,13 @@ struct rio_switch {
  * @cwrite: Callback to perform network write of config space.
  * @dsend: Callback to send a doorbell message.
  * @pwenable: Callback to enable/disable port-write message handling.
+ * @open_outb_mbox: Callback to initialize outbound mailbox.
+ * @close_outb_mbox: Callback to shut down outbound mailbox.
+ * @open_inb_mbox: Callback to initialize inbound mailbox.
+ * @close_inb_mbox: Callback to shut down inbound mailbox.
+ * @add_outb_message: Callback to add a message to an outbound mailbox queue.
+ * @add_inb_buffer: Callback to add a buffer to an inbound mailbox queue.
+ * @get_inb_message: Callback to get a message from an inbound mailbox queue.
  */
 struct rio_ops {
         int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len,
@@ -274,6 +305,16 @@ struct rio_ops {
                         u8 hopcount, u32 offset, int len, u32 data);
         int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data);
         int (*pwenable) (struct rio_mport *mport, int enable);
+        int (*open_outb_mbox)(struct rio_mport *mport, void *dev_id,
+                              int mbox, int entries);
+        void (*close_outb_mbox)(struct rio_mport *mport, int mbox);
+        int  (*open_inb_mbox)(struct rio_mport *mport, void *dev_id,
+                             int mbox, int entries);
+        void (*close_inb_mbox)(struct rio_mport *mport, int mbox);
+        int  (*add_outb_message)(struct rio_mport *mport, struct rio_dev *rdev,
+                                 int mbox, void *buffer, size_t len);
+        int (*add_inb_buffer)(struct rio_mport *mport, int mbox, void *buf);
+        void *(*get_inb_message)(struct rio_mport *mport, int mbox);
 };
 
 #define RIO_RESOURCE_MEM        0x00000100
@@ -355,12 +396,7 @@ union rio_pw_msg {
 };
 
 /* Architecture and hardware-specific functions */
-extern int rio_init_mports(void);
-extern void rio_register_mport(struct rio_mport *);
-extern int rio_hw_add_outb_message(struct rio_mport *, struct rio_dev *, int,
-                                   void *, size_t);
-extern int rio_hw_add_inb_buffer(struct rio_mport *, int, void *);
-extern void *rio_hw_get_inb_message(struct rio_mport *, int);
+extern int rio_register_mport(struct rio_mport *);
 extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int);
 extern void rio_close_inb_mbox(struct rio_mport *, int);
 extern int rio_open_outb_mbox(struct rio_mport *, void *, int, int);