1 files changed, 193 insertions, 20 deletions

diff --git a/drivers/infiniband/include/ib_mad.h b/drivers/infiniband/include/ib_mad.h
index 4a6bf6763a97..491b6f25b3b8 100644
--- a/drivers/infiniband/include/ib_mad.h
+++ b/drivers/infiniband/include/ib_mad.h
@@ -33,12 +33,14 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * $Id: ib_mad.h 1389 2004-12-27 22:56:47Z roland $
+ * $Id: ib_mad.h 2775 2005-07-02 13:42:12Z halr $
  */
 
 #if !defined( IB_MAD_H )
 #define IB_MAD_H
 
+#include <linux/pci.h>
+
 #include <ib_verbs.h>
 
 /* Management base version */
@@ -56,6 +58,8 @@
 #define IB_MGMT_CLASS_VENDOR_RANGE2_START       0x30
 #define IB_MGMT_CLASS_VENDOR_RANGE2_END         0x4F
 
+#define IB_OPENIB_OUI                           (0x001405)
+
 /* Management methods */
 #define IB_MGMT_METHOD_GET                      0x01
 #define IB_MGMT_METHOD_SET                      0x02
@@ -70,18 +74,37 @@
 
 #define IB_MGMT_MAX_METHODS                     128
 
+/* RMPP information */
+#define IB_MGMT_RMPP_VERSION                    1
+
+#define IB_MGMT_RMPP_TYPE_DATA                  1
+#define IB_MGMT_RMPP_TYPE_ACK                   2
+#define IB_MGMT_RMPP_TYPE_STOP                  3
+#define IB_MGMT_RMPP_TYPE_ABORT                 4
+
+#define IB_MGMT_RMPP_FLAG_ACTIVE                1
+#define IB_MGMT_RMPP_FLAG_FIRST                 (1<<1)
+#define IB_MGMT_RMPP_FLAG_LAST                  (1<<2)
+
+#define IB_MGMT_RMPP_NO_RESPTIME                0x1F
+
+#define IB_MGMT_RMPP_STATUS_SUCCESS             0
+#define IB_MGMT_RMPP_STATUS_RESX                1
+#define IB_MGMT_RMPP_STATUS_T2L                 118
+#define IB_MGMT_RMPP_STATUS_BAD_LEN             119
+#define IB_MGMT_RMPP_STATUS_BAD_SEG             120
+#define IB_MGMT_RMPP_STATUS_BADT                121
+#define IB_MGMT_RMPP_STATUS_W2S                 122
+#define IB_MGMT_RMPP_STATUS_S2B                 123
+#define IB_MGMT_RMPP_STATUS_BAD_STATUS          124
+#define IB_MGMT_RMPP_STATUS_UNV                 125
+#define IB_MGMT_RMPP_STATUS_TMR                 126
+#define IB_MGMT_RMPP_STATUS_UNSPEC              127
+
 #define IB_QP0          0
 #define IB_QP1          __constant_htonl(1)
 #define IB_QP1_QKEY     0x80010000
-
-struct ib_grh {
-        u32             version_tclass_flow;
-        u16             paylen;
-        u8              next_hdr;
-        u8              hop_limit;
-        union ib_gid    sgid;
-        union ib_gid    dgid;
-} __attribute__ ((packed));
+#define IB_QP_SET_QKEY  0x80000000
 
 struct ib_mad_hdr {
         u8      base_version;
@@ -94,7 +117,7 @@ struct ib_mad_hdr {
         u16     attr_id;
         u16     resv;
         u32     attr_mod;
-} __attribute__ ((packed));
+};
 
 struct ib_rmpp_hdr {
         u8      rmpp_version;
@@ -103,17 +126,41 @@ struct ib_rmpp_hdr {
         u8      rmpp_status;
         u32     seg_num;
         u32     paylen_newwin;
+};
+
+typedef u64 __bitwise ib_sa_comp_mask;
+
+#define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << n))
+
+/*
+ * ib_sa_hdr and ib_sa_mad structures must be packed because they have
+ * 64-bit fields that are only 32-bit aligned. 64-bit architectures will
+ * lay them out wrong otherwise.  (And unfortunately they are sent on
+ * the wire so we can't change the layout)
+ */
+struct ib_sa_hdr {
+        u64                     sm_key;
+        u16                     attr_offset;
+        u16                     reserved;
+        ib_sa_comp_mask         comp_mask;
 } __attribute__ ((packed));
 
 struct ib_mad {
         struct ib_mad_hdr       mad_hdr;
         u8                      data[232];
-} __attribute__ ((packed));
+};
 
 struct ib_rmpp_mad {
         struct ib_mad_hdr       mad_hdr;
         struct ib_rmpp_hdr      rmpp_hdr;
         u8                      data[220];
+};
+
+struct ib_sa_mad {
+        struct ib_mad_hdr       mad_hdr;
+        struct ib_rmpp_hdr      rmpp_hdr;
+        struct ib_sa_hdr        sa_hdr;
+        u8                      data[200];
 } __attribute__ ((packed));
 
 struct ib_vendor_mad {
@@ -122,7 +169,70 @@ struct ib_vendor_mad {
         u8                      reserved;
         u8                      oui[3];
         u8                      data[216];
-} __attribute__ ((packed));
+};
+
+/**
+ * ib_mad_send_buf - MAD data buffer and work request for sends.
+ * @mad: References an allocated MAD data buffer.  The size of the data
+ *   buffer is specified in the @send_wr.length field.
+ * @mapping: DMA mapping information.
+ * @mad_agent: MAD agent that allocated the buffer.
+ * @context: User-controlled context fields.
+ * @send_wr: An initialized work request structure used when sending the MAD.
+ *   The wr_id field of the work request is initialized to reference this
+ *   data structure.
+ * @sge: A scatter-gather list referenced by the work request.
+ *
+ * Users are responsible for initializing the MAD buffer itself, with the
+ * exception of specifying the payload length field in any RMPP MAD.
+ */
+struct ib_mad_send_buf {
+        struct ib_mad           *mad;
+        DECLARE_PCI_UNMAP_ADDR(mapping)
+        struct ib_mad_agent     *mad_agent;
+        void                    *context[2];
+        struct ib_send_wr       send_wr;
+        struct ib_sge           sge;
+};
+
+/**
+ * ib_get_rmpp_resptime - Returns the RMPP response time.
+ * @rmpp_hdr: An RMPP header.
+ */
+static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr)
+{
+        return rmpp_hdr->rmpp_rtime_flags >> 3;
+}
+
+/**
+ * ib_get_rmpp_flags - Returns the RMPP flags.
+ * @rmpp_hdr: An RMPP header.
+ */
+static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr)
+{
+        return rmpp_hdr->rmpp_rtime_flags & 0x7;
+}
+
+/**
+ * ib_set_rmpp_resptime - Sets the response time in an RMPP header.
+ * @rmpp_hdr: An RMPP header.
+ * @rtime: The response time to set.
+ */
+static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime)
+{
+        rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3);
+}
+
+/**
+ * ib_set_rmpp_flags - Sets the flags in an RMPP header.
+ * @rmpp_hdr: An RMPP header.
+ * @flags: The flags to set.
+ */
+static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags)
+{
+        rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF1) |
+                                     (flags & 0x7);
+}
 
 struct ib_mad_agent;
 struct ib_mad_send_wc;
@@ -168,6 +278,7 @@ typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent,
  * ib_mad_agent - Used to track MAD registration with the access layer.
  * @device: Reference to device registration is on.
  * @qp: Reference to QP used for sending and receiving MADs.
+ * @mr: Memory region for system memory usable for DMA.
  * @recv_handler: Callback handler for a received MAD.
  * @send_handler: Callback handler for a sent MAD.
  * @snoop_handler: Callback handler for snooped sent MADs.
@@ -176,16 +287,19 @@ typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent,
  *   Unsolicited MADs sent by this client will have the upper 32-bits
  *   of their TID set to this value.
  * @port_num: Port number on which QP is registered
+ * @rmpp_version: If set, indicates the RMPP version used by this agent.
  */
 struct ib_mad_agent {
         struct ib_device        *device;
         struct ib_qp            *qp;
+        struct ib_mr            *mr;
         ib_mad_recv_handler     recv_handler;
         ib_mad_send_handler     send_handler;
         ib_mad_snoop_handler    snoop_handler;
         void                    *context;
         u32                     hi_tid;
         u8                      port_num;
+        u8                      rmpp_version;
 };
 
 /**
@@ -219,6 +333,7 @@ struct ib_mad_recv_buf {
  * ib_mad_recv_wc - received MAD information.
  * @wc: Completion information for the received data.
  * @recv_buf: Specifies the location of the received data buffer(s).
+ * @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers.
  * @mad_len: The length of the received MAD, without duplicated headers.
  *
  * For received response, the wr_id field of the wc is set to the wr_id
@@ -227,6 +342,7 @@ struct ib_mad_recv_buf {
 struct ib_mad_recv_wc {
         struct ib_wc            *wc;
         struct ib_mad_recv_buf  recv_buf;
+        struct list_head        rmpp_list;
         int                     mad_len;
 };
 
@@ -322,6 +438,16 @@ int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent);
  * @bad_send_wr: Specifies the MAD on which an error was encountered.
  *
  * Sent MADs are not guaranteed to complete in the order that they were posted.
+ *
+ * If the MAD requires RMPP, the data buffer should contain a single copy
+ * of the common MAD, RMPP, and class specific headers, followed by the class
+ * defined data.  If the class defined data would not divide evenly into
+ * RMPP segments, then space must be allocated at the end of the referenced
+ * buffer for any required padding.  To indicate the amount of class defined
+ * data being transferred, the paylen_newwin field in the RMPP header should
+ * be set to the size of the class specific header plus the amount of class
+ * defined data being transferred.  The paylen_newwin field should be
+ * specified in network-byte order.
  */
 int ib_post_send_mad(struct ib_mad_agent *mad_agent,
                      struct ib_send_wr *send_wr,
@@ -334,15 +460,13 @@ int ib_post_send_mad(struct ib_mad_agent *mad_agent,
  *   referenced buffer should be at least the size of the mad_len specified
  *   by @mad_recv_wc.
  *
- * This call copies a chain of received RMPP MADs into a single data buffer,
+ * This call copies a chain of received MAD segments into a single data buffer,
  * removing duplicated headers.
  */
-void ib_coalesce_recv_mad(struct ib_mad_recv_wc *mad_recv_wc,
-                          void *buf);
+void ib_coalesce_recv_mad(struct ib_mad_recv_wc *mad_recv_wc, void *buf);
 
 /**
- * ib_free_recv_mad - Returns data buffers used to receive a MAD to the
- *   access layer.
+ * ib_free_recv_mad - Returns data buffers used to receive a MAD.
  * @mad_recv_wc: Work completion information for a received MAD.
  *
  * Clients receiving MADs through their ib_mad_recv_handler must call this
@@ -358,8 +482,18 @@ void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc);
  * MADs will be returned to the user through the corresponding
  * ib_mad_send_handler.
  */
-void ib_cancel_mad(struct ib_mad_agent *mad_agent,
-                   u64 wr_id);
+void ib_cancel_mad(struct ib_mad_agent *mad_agent, u64 wr_id);
+
+/**
+ * ib_modify_mad - Modifies an outstanding send MAD operation.
+ * @mad_agent: Specifies the registration associated with sent MAD.
+ * @wr_id: Indicates the work request identifier of the MAD to modify.
+ * @timeout_ms: New timeout value for sent MAD.
+ *
+ * This call will reset the timeout value for a sent MAD to the specified
+ * value.
+ */
+int ib_modify_mad(struct ib_mad_agent *mad_agent, u64 wr_id, u32 timeout_ms);
 
 /**
  * ib_redirect_mad_qp - Registers a QP for MAD services.
@@ -401,4 +535,43 @@ struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp,
 int ib_process_mad_wc(struct ib_mad_agent *mad_agent,
                       struct ib_wc *wc);
 
+/**
+ * ib_create_send_mad - Allocate and initialize a data buffer and work request
+ *   for sending a MAD.
+ * @mad_agent: Specifies the registered MAD service to associate with the MAD.
+ * @remote_qpn: Specifies the QPN of the receiving node.
+ * @pkey_index: Specifies which PKey the MAD will be sent using.  This field
+ *   is valid only if the remote_qpn is QP 1.
+ * @ah: References the address handle used to transfer to the remote node.
+ * @rmpp_active: Indicates if the send will enable RMPP.
+ * @hdr_len: Indicates the size of the data header of the MAD.  This length
+ *   should include the common MAD header, RMPP header, plus any class
+ *   specific header.
+ * @data_len: Indicates the size of any user-transferred data.  The call will
+ *   automatically adjust the allocated buffer size to account for any
+ *   additional padding that may be necessary.
+ * @gfp_mask: GFP mask used for the memory allocation.
+ *
+ * This is a helper routine that may be used to allocate a MAD.  Users are
+ * not required to allocate outbound MADs using this call.  The returned
+ * MAD send buffer will reference a data buffer usable for sending a MAD, along
+ * with an initialized work request structure.  Users may modify the returned
+ * MAD data buffer or work request before posting the send.
+ *
+ * The returned data buffer will be cleared.  Users are responsible for
+ * initializing the common MAD and any class specific headers.  If @rmpp_active
+ * is set, the RMPP header will be initialized for sending.
+ */
+struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
+                                            u32 remote_qpn, u16 pkey_index,
+                                            struct ib_ah *ah, int rmpp_active,
+                                            int hdr_len, int data_len,
+                                            unsigned int __nocast gfp_mask);
+
+/**
+ * ib_free_send_mad - Returns data buffers used to send a MAD.
+ * @send_buf: Previously allocated send data buffer.
+ */
+void ib_free_send_mad(struct ib_mad_send_buf *send_buf);
+
 #endif /* IB_MAD_H */