IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters

Add an InfiniBand driver for Mellanox ConnectX adapters.  Because
these adapters can also be used as ethernet NICs and Fibre Channel 
HBAs, the driver is split into two modules: 
 
  mlx4_core: Handles low-level things like device initialization and 
    processing firmware commands.  Also controls resource allocation 
    so that the InfiniBand, ethernet and FC functions can share a 
    device without stepping on each other. 
 
  mlx4_ib: Handles InfiniBand-specific things; plugs into the 
    InfiniBand midlayer. 

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 178 insertions, 0 deletions

diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
new file mode 100644
index 000000000000..4fb552d12f7a
--- /dev/null
+++ b/include/linux/mlx4/cmd.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2006 Cisco Systems, Inc.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX4_CMD_H
+#define MLX4_CMD_H
+
+#include <linux/dma-mapping.h>
+
+enum {
+        /* initialization and general commands */
+        MLX4_CMD_SYS_EN          = 0x1,
+        MLX4_CMD_SYS_DIS         = 0x2,
+        MLX4_CMD_MAP_FA          = 0xfff,
+        MLX4_CMD_UNMAP_FA        = 0xffe,
+        MLX4_CMD_RUN_FW          = 0xff6,
+        MLX4_CMD_MOD_STAT_CFG    = 0x34,
+        MLX4_CMD_QUERY_DEV_CAP   = 0x3,
+        MLX4_CMD_QUERY_FW        = 0x4,
+        MLX4_CMD_ENABLE_LAM      = 0xff8,
+        MLX4_CMD_DISABLE_LAM     = 0xff7,
+        MLX4_CMD_QUERY_DDR       = 0x5,
+        MLX4_CMD_QUERY_ADAPTER   = 0x6,
+        MLX4_CMD_INIT_HCA        = 0x7,
+        MLX4_CMD_CLOSE_HCA       = 0x8,
+        MLX4_CMD_INIT_PORT       = 0x9,
+        MLX4_CMD_CLOSE_PORT      = 0xa,
+        MLX4_CMD_QUERY_HCA       = 0xb,
+        MLX4_CMD_SET_PORT        = 0xc,
+        MLX4_CMD_ACCESS_DDR      = 0x2e,
+        MLX4_CMD_MAP_ICM         = 0xffa,
+        MLX4_CMD_UNMAP_ICM       = 0xff9,
+        MLX4_CMD_MAP_ICM_AUX     = 0xffc,
+        MLX4_CMD_UNMAP_ICM_AUX   = 0xffb,
+        MLX4_CMD_SET_ICM_SIZE    = 0xffd,
+
+        /* TPT commands */
+        MLX4_CMD_SW2HW_MPT       = 0xd,
+        MLX4_CMD_QUERY_MPT       = 0xe,
+        MLX4_CMD_HW2SW_MPT       = 0xf,
+        MLX4_CMD_READ_MTT        = 0x10,
+        MLX4_CMD_WRITE_MTT       = 0x11,
+        MLX4_CMD_SYNC_TPT        = 0x2f,
+
+        /* EQ commands */
+        MLX4_CMD_MAP_EQ          = 0x12,
+        MLX4_CMD_SW2HW_EQ        = 0x13,
+        MLX4_CMD_HW2SW_EQ        = 0x14,
+        MLX4_CMD_QUERY_EQ        = 0x15,
+
+        /* CQ commands */
+        MLX4_CMD_SW2HW_CQ        = 0x16,
+        MLX4_CMD_HW2SW_CQ        = 0x17,
+        MLX4_CMD_QUERY_CQ        = 0x18,
+        MLX4_CMD_RESIZE_CQ       = 0x2c,
+
+        /* SRQ commands */
+        MLX4_CMD_SW2HW_SRQ       = 0x35,
+        MLX4_CMD_HW2SW_SRQ       = 0x36,
+        MLX4_CMD_QUERY_SRQ       = 0x37,
+        MLX4_CMD_ARM_SRQ         = 0x40,
+
+        /* QP/EE commands */
+        MLX4_CMD_RST2INIT_QP     = 0x19,
+        MLX4_CMD_INIT2RTR_QP     = 0x1a,
+        MLX4_CMD_RTR2RTS_QP      = 0x1b,
+        MLX4_CMD_RTS2RTS_QP      = 0x1c,
+        MLX4_CMD_SQERR2RTS_QP    = 0x1d,
+        MLX4_CMD_2ERR_QP         = 0x1e,
+        MLX4_CMD_RTS2SQD_QP      = 0x1f,
+        MLX4_CMD_SQD2SQD_QP      = 0x38,
+        MLX4_CMD_SQD2RTS_QP      = 0x20,
+        MLX4_CMD_2RST_QP         = 0x21,
+        MLX4_CMD_QUERY_QP        = 0x22,
+        MLX4_CMD_INIT2INIT_QP    = 0x2d,
+        MLX4_CMD_SUSPEND_QP      = 0x32,
+        MLX4_CMD_UNSUSPEND_QP    = 0x33,
+        /* special QP and management commands */
+        MLX4_CMD_CONF_SPECIAL_QP = 0x23,
+        MLX4_CMD_MAD_IFC         = 0x24,
+
+        /* multicast commands */
+        MLX4_CMD_READ_MCG        = 0x25,
+        MLX4_CMD_WRITE_MCG       = 0x26,
+        MLX4_CMD_MGID_HASH       = 0x27,
+
+        /* miscellaneous commands */
+        MLX4_CMD_DIAG_RPRT       = 0x30,
+        MLX4_CMD_NOP             = 0x31,
+
+        /* debug commands */
+        MLX4_CMD_QUERY_DEBUG_MSG = 0x2a,
+        MLX4_CMD_SET_DEBUG_MSG   = 0x2b,
+};
+
+enum {
+        MLX4_CMD_TIME_CLASS_A   = 10000,
+        MLX4_CMD_TIME_CLASS_B   = 10000,
+        MLX4_CMD_TIME_CLASS_C   = 10000,
+};
+
+enum {
+        MLX4_MAILBOX_SIZE       =  4096
+};
+
+struct mlx4_dev;
+
+struct mlx4_cmd_mailbox {
+        void                   *buf;
+        dma_addr_t              dma;
+};
+
+int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
+               int out_is_imm, u32 in_modifier, u8 op_modifier,
+               u16 op, unsigned long timeout);
+
+/* Invoke a command with no output parameter */
+static inline int mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u32 in_modifier,
+                           u8 op_modifier, u16 op, unsigned long timeout)
+{
+        return __mlx4_cmd(dev, in_param, NULL, 0, in_modifier,
+                          op_modifier, op, timeout);
+}
+
+/* Invoke a command with an output mailbox */
+static inline int mlx4_cmd_box(struct mlx4_dev *dev, u64 in_param, u64 out_param,
+                               u32 in_modifier, u8 op_modifier, u16 op,
+                               unsigned long timeout)
+{
+        return __mlx4_cmd(dev, in_param, &out_param, 0, in_modifier,
+                          op_modifier, op, timeout);
+}
+
+/*
+ * Invoke a command with an immediate output parameter (and copy the
+ * output into the caller's out_param pointer after the command
+ * executes).
+ */
+static inline int mlx4_cmd_imm(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
+                               u32 in_modifier, u8 op_modifier, u16 op,
+                               unsigned long timeout)
+{
+        return __mlx4_cmd(dev, in_param, out_param, 1, in_modifier,
+                          op_modifier, op, timeout);
+}
+
+struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev);
+void mlx4_free_cmd_mailbox(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox);
+
+#endif /* MLX4_CMD_H */