bnx2x: add DCB support

Adding DCB initialization and handling on 57712 FW/HW

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Shmulik Ravid-Rabinovitz <shmulikr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 193 insertions, 0 deletions

diff --git a/drivers/net/bnx2x/bnx2x_dcb.h b/drivers/net/bnx2x/bnx2x_dcb.h
new file mode 100644
index 000000000000..8dea56b511f5
--- /dev/null
+++ b/drivers/net/bnx2x/bnx2x_dcb.h
@@ -0,0 +1,193 @@
+/* bnx2x_dcb.h: Broadcom Everest network driver.
+ *
+ * Copyright 2009-2010 Broadcom Corporation
+ *
+ * Unless you and Broadcom execute a separate written software license
+ * agreement governing use of this software, this software is licensed to you
+ * under the terms of the GNU General Public License version 2, available
+ * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
+ *
+ * Notwithstanding the above, under no circumstances may you combine this
+ * software in any way with any other Broadcom software provided under a
+ * license other than the GPL, without Broadcom's express prior written
+ * consent.
+ *
+ * Maintained by: Eilon Greenstein <eilong@broadcom.com>
+ * Written by: Dmitry Kravkov
+ *
+ */
+#ifndef BNX2X_DCB_H
+#define BNX2X_DCB_H
+
+#include "bnx2x_hsi.h"
+
+#define LLFC_DRIVER_TRAFFIC_TYPE_MAX 3 /* NW, iSCSI, FCoE */
+struct bnx2x_dcbx_app_params {
+	u32 enabled;
+	u32 traffic_type_priority[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
+};
+
+#define E2_NUM_OF_COS			2
+#define BNX2X_DCBX_COS_NOT_STRICT	0
+#define BNX2X_DCBX_COS_LOW_STRICT	1
+#define BNX2X_DCBX_COS_HIGH_STRICT	2
+
+struct bnx2x_dcbx_cos_params {
+	u32	bw_tbl;
+	u32	pri_bitmask;
+	u8	strict;
+	u8	pauseable;
+};
+
+struct bnx2x_dcbx_pg_params {
+	u32 enabled;
+	u8 num_of_cos; /* valid COS entries */
+	struct bnx2x_dcbx_cos_params	cos_params[E2_NUM_OF_COS];
+};
+
+struct bnx2x_dcbx_pfc_params {
+	u32 enabled;
+	u32 priority_non_pauseable_mask;
+};
+
+struct bnx2x_dcbx_port_params {
+	u32 dcbx_enabled;
+	struct bnx2x_dcbx_pfc_params pfc;
+	struct bnx2x_dcbx_pg_params  ets;
+	struct bnx2x_dcbx_app_params app;
+};
+
+#define BNX2X_DCBX_CONFIG_INV_VALUE			(0xFFFFFFFF)
+#define BNX2X_DCBX_OVERWRITE_SETTINGS_DISABLE		0
+#define BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE		1
+#define BNX2X_DCBX_OVERWRITE_SETTINGS_INVALID	(BNX2X_DCBX_CONFIG_INV_VALUE)
+
+/*******************************************************************************
+ * LLDP protocol configuration parameters.
+ ******************************************************************************/
+struct bnx2x_config_lldp_params {
+	u32 overwrite_settings;
+	u32 msg_tx_hold;
+	u32 msg_fast_tx;
+	u32 tx_credit_max;
+	u32 msg_tx_interval;
+	u32 tx_fast;
+};
+
+struct bnx2x_admin_priority_app_table {
+		u32 valid;
+		u32 priority;
+#define INVALID_TRAFFIC_TYPE_PRIORITY	(0xFFFFFFFF)
+		u32 traffic_type;
+#define TRAFFIC_TYPE_ETH		0
+#define TRAFFIC_TYPE_PORT		1
+		u32 app_id;
+};
+
+/*******************************************************************************
+ * DCBX protocol configuration parameters.
+ ******************************************************************************/
+struct bnx2x_config_dcbx_params {
+	u32 dcb_enable;
+	u32 admin_dcbx_enable;
+	u32 overwrite_settings;
+	u32 admin_dcbx_version;
+	u32 admin_ets_enable;
+	u32 admin_pfc_enable;
+	u32 admin_tc_supported_tx_enable;
+	u32 admin_ets_configuration_tx_enable;
+	u32 admin_ets_recommendation_tx_enable;
+	u32 admin_pfc_tx_enable;
+	u32 admin_application_priority_tx_enable;
+	u32 admin_ets_willing;
+	u32 admin_ets_reco_valid;
+	u32 admin_pfc_willing;
+	u32 admin_app_priority_willing;
+	u32 admin_configuration_bw_precentage[8];
+	u32 admin_configuration_ets_pg[8];
+	u32 admin_recommendation_bw_precentage[8];
+	u32 admin_recommendation_ets_pg[8];
+	u32 admin_pfc_bitmap;
+	struct bnx2x_admin_priority_app_table admin_priority_app_table[4];
+	u32 admin_default_priority;
+};
+
+#define GET_FLAGS(flags, bits)		((flags) & (bits))
+#define SET_FLAGS(flags, bits)		((flags) |= (bits))
+#define RESET_FLAGS(flags, bits)	((flags) &= ~(bits))
+
+enum {
+	DCBX_READ_LOCAL_MIB,
+	DCBX_READ_REMOTE_MIB
+};
+
+#define ETH_TYPE_FCOE		(0x8906)
+#define TCP_PORT_ISCSI		(0xCBC)
+
+#define PFC_VALUE_FRAME_SIZE				(512)
+#define PFC_QUANTA_IN_NANOSEC_FROM_SPEED_MEGA(mega_speed)  \
+				((1000 * PFC_VALUE_FRAME_SIZE)/(mega_speed))
+
+#define PFC_BRB1_REG_HIGH_LLFC_LOW_THRESHOLD			130
+#define PFC_BRB1_REG_HIGH_LLFC_HIGH_THRESHOLD			170
+
+
+
+struct cos_entry_help_data {
+	u32			pri_join_mask;
+	u32			cos_bw;
+	u8			strict;
+	bool			pausable;
+};
+
+struct cos_help_data {
+	struct cos_entry_help_data	data[E2_NUM_OF_COS];
+	u8				num_of_cos;
+};
+
+#define DCBX_ILLEGAL_PG				(0xFF)
+#define DCBX_PFC_PRI_MASK			(0xFF)
+#define DCBX_STRICT_PRIORITY			(15)
+#define DCBX_INVALID_COS_BW			(0xFFFFFFFF)
+#define DCBX_PFC_PRI_NON_PAUSE_MASK(bp)		\
+			((bp)->dcbx_port_params.pfc.priority_non_pauseable_mask)
+#define DCBX_PFC_PRI_PAUSE_MASK(bp)		\
+					((u8)~DCBX_PFC_PRI_NON_PAUSE_MASK(bp))
+#define DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri)	\
+				((pg_pri) & (DCBX_PFC_PRI_PAUSE_MASK(bp)))
+#define DCBX_PFC_PRI_GET_NON_PAUSE(bp, pg_pri)	\
+			(DCBX_PFC_PRI_NON_PAUSE_MASK(bp) & (pg_pri))
+#define IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pg_pri)	\
+			(pg_pri == DCBX_PFC_PRI_GET_PAUSE((bp), (pg_pri)))
+#define IS_DCBX_PFC_PRI_ONLY_NON_PAUSE(bp, pg_pri)\
+			((pg_pri) == DCBX_PFC_PRI_GET_NON_PAUSE((bp), (pg_pri)))
+#define IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pg_pri)	\
+			(!(IS_DCBX_PFC_PRI_ONLY_NON_PAUSE((bp), (pg_pri)) || \
+			 IS_DCBX_PFC_PRI_ONLY_PAUSE((bp), (pg_pri))))
+
+
+struct pg_entry_help_data {
+	u8	num_of_dif_pri;
+	u8	pg;
+	u32	pg_priority;
+};
+
+struct pg_help_data {
+	struct pg_entry_help_data	data[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
+	u8				num_of_pg;
+};
+
+/* forward DCB/PFC related declarations */
+struct bnx2x;
+void bnx2x_dcb_init_intmem_pfc(struct bnx2x *bp);
+void bnx2x_dcbx_update(struct work_struct *work);
+void bnx2x_dcbx_init_params(struct bnx2x *bp);
+
+enum {
+	BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
+	BNX2X_DCBX_STATE_TX_PAUSED = 0x2,
+	BNX2X_DCBX_STATE_TX_RELEASED = 0x4
+};
+void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
+
+#endif /* BNX2X_DCB_H */