summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h')
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
new file mode 100644
index 000000000000..1ec1d834e257
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2013-2014 Chelsio Communications. All rights reserved.
+ *
+ * Written by Anish Bhatt (anish@chelsio.com)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ */
+
+#ifndef __CXGB4_DCB_H
+#define __CXGB4_DCB_H
+
+#include <linux/netdevice.h>
+#include <linux/dcbnl.h>
+#include <net/dcbnl.h>
+
+#ifdef CONFIG_CHELSIO_T4_DCB
+
+#define CXGB4_DCBX_FW_SUPPORT \
+ (DCB_CAP_DCBX_VER_CEE | \
+ DCB_CAP_DCBX_VER_IEEE | \
+ DCB_CAP_DCBX_LLD_MANAGED)
+#define CXGB4_DCBX_HOST_SUPPORT \
+ (DCB_CAP_DCBX_VER_CEE | \
+ DCB_CAP_DCBX_VER_IEEE | \
+ DCB_CAP_DCBX_HOST)
+
+#define CXGB4_MAX_PRIORITY CXGB4_MAX_DCBX_APP_SUPPORTED
+#define CXGB4_MAX_TCS CXGB4_MAX_DCBX_APP_SUPPORTED
+
+#define INIT_PORT_DCB_CMD(__pcmd, __port, __op, __action) \
+ do { \
+ memset(&(__pcmd), 0, sizeof(__pcmd)); \
+ (__pcmd).op_to_portid = \
+ cpu_to_be32(FW_CMD_OP(FW_PORT_CMD) | \
+ FW_CMD_REQUEST | \
+ FW_CMD_##__op | \
+ FW_PORT_CMD_PORTID(__port)); \
+ (__pcmd).action_to_len16 = \
+ cpu_to_be32(FW_PORT_CMD_ACTION(__action) | \
+ FW_LEN16(pcmd)); \
+ } while (0)
+
+#define INIT_PORT_DCB_READ_PEER_CMD(__pcmd, __port) \
+ INIT_PORT_DCB_CMD(__pcmd, __port, READ, FW_PORT_ACTION_DCB_READ_RECV)
+
+#define INIT_PORT_DCB_READ_LOCAL_CMD(__pcmd, __port) \
+ INIT_PORT_DCB_CMD(__pcmd, __port, READ, FW_PORT_ACTION_DCB_READ_TRANS)
+
+#define INIT_PORT_DCB_READ_SYNC_CMD(__pcmd, __port) \
+ INIT_PORT_DCB_CMD(__pcmd, __port, READ, FW_PORT_ACTION_DCB_READ_DET)
+
+#define INIT_PORT_DCB_WRITE_CMD(__pcmd, __port) \
+ INIT_PORT_DCB_CMD(__pcmd, __port, EXEC, FW_PORT_ACTION_L2_DCB_CFG)
+
+/* States we can be in for a port's Data Center Bridging.
+ */
+enum cxgb4_dcb_state {
+ CXGB4_DCB_STATE_START, /* initial unknown state */
+ CXGB4_DCB_STATE_HOST, /* we're using Host DCB (if at all) */
+ CXGB4_DCB_STATE_FW_INCOMPLETE, /* using firmware DCB, incomplete */
+ CXGB4_DCB_STATE_FW_ALLSYNCED, /* using firmware DCB, all sync'ed */
+};
+
+/* Data Center Bridging state input for the Finite State Machine.
+ */
+enum cxgb4_dcb_state_input {
+ /* Input from the firmware.
+ */
+ CXGB4_DCB_INPUT_FW_DISABLED, /* firmware DCB disabled */
+ CXGB4_DCB_INPUT_FW_ENABLED, /* firmware DCB enabled */
+ CXGB4_DCB_INPUT_FW_INCOMPLETE, /* firmware reports incomplete DCB */
+ CXGB4_DCB_INPUT_FW_ALLSYNCED, /* firmware reports all sync'ed */
+
+};
+
+/* Firmware DCB messages that we've received so far ...
+ */
+enum cxgb4_dcb_fw_msgs {
+ CXGB4_DCB_FW_PGID = 0x01,
+ CXGB4_DCB_FW_PGRATE = 0x02,
+ CXGB4_DCB_FW_PRIORATE = 0x04,
+ CXGB4_DCB_FW_PFC = 0x08,
+ CXGB4_DCB_FW_APP_ID = 0x10,
+};
+
+#define CXGB4_MAX_DCBX_APP_SUPPORTED 8
+
+/* Data Center Bridging support;
+ */
+struct port_dcb_info {
+ enum cxgb4_dcb_state state; /* DCB State Machine */
+ enum cxgb4_dcb_fw_msgs msgs; /* DCB Firmware messages received */
+ unsigned int supported; /* OS DCB capabilities supported */
+ bool enabled; /* OS Enabled state */
+
+ /* Cached copies of DCB information sent by the firmware (in Host
+ * Native Endian format).
+ */
+ u32 pgid; /* Priority Group[0..7] */
+ u8 pfcen; /* Priority Flow Control[0..7] */
+ u8 pg_num_tcs_supported; /* max PG Traffic Classes */
+ u8 pfc_num_tcs_supported; /* max PFC Traffic Classes */
+ u8 pgrate[8]; /* Priority Group Rate[0..7] */
+ u8 priorate[8]; /* Priority Rate[0..7] */
+ struct app_priority { /* Application Information */
+ u8 user_prio_map; /* Priority Map bitfield */
+ u8 sel_field; /* Protocol ID interpretation */
+ u16 protocolid; /* Protocol ID */
+ } app_priority[CXGB4_MAX_DCBX_APP_SUPPORTED];
+};
+
+void cxgb4_dcb_state_init(struct net_device *);
+void cxgb4_dcb_state_fsm(struct net_device *, enum cxgb4_dcb_state_input);
+void cxgb4_dcb_handle_fw_update(struct adapter *, const struct fw_port_cmd *);
+void cxgb4_dcb_set_caps(struct adapter *, const struct fw_port_cmd *);
+extern const struct dcbnl_rtnl_ops cxgb4_dcb_ops;
+
+#define CXGB4_DCB_ENABLED true
+
+#else /* !CONFIG_CHELSIO_T4_DCB */
+
+static inline void cxgb4_dcb_state_init(struct net_device *dev)
+{
+}
+
+#define CXGB4_DCB_ENABLED false
+
+#endif /* !CONFIG_CHELSIO_T4_DCB */
+
+#endif /* __CXGB4_DCB_H */