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linux/drivers/net/bnx2x/bnx2x_link.h
Vladislav Zolotarov bcab15c5d7 bnx2x: Add DCB/PFC support - link layer 
Add appropriate HW DCB/PFC configuration

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-16 13:15:55 -08:00

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/* Copyright 2008-2010 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.
*
* Written by Yaniv Rosner
*
*/
#ifndef BNX2X_LINK_H
#define BNX2X_LINK_H
/***********************************************************/
/* Defines */
/***********************************************************/
#define DEFAULT_PHY_DEV_ADDR 3
#define E2_DEFAULT_PHY_DEV_ADDR 5
#define BNX2X_FLOW_CTRL_AUTO PORT_FEATURE_FLOW_CONTROL_AUTO
#define BNX2X_FLOW_CTRL_TX PORT_FEATURE_FLOW_CONTROL_TX
#define BNX2X_FLOW_CTRL_RX PORT_FEATURE_FLOW_CONTROL_RX
#define BNX2X_FLOW_CTRL_BOTH PORT_FEATURE_FLOW_CONTROL_BOTH
#define BNX2X_FLOW_CTRL_NONE PORT_FEATURE_FLOW_CONTROL_NONE
#define SPEED_AUTO_NEG 0
#define SPEED_12000 12000
#define SPEED_12500 12500
#define SPEED_13000 13000
#define SPEED_15000 15000
#define SPEED_16000 16000
#define SFP_EEPROM_VENDOR_NAME_ADDR 0x14
#define SFP_EEPROM_VENDOR_NAME_SIZE 16
#define SFP_EEPROM_VENDOR_OUI_ADDR 0x25
#define SFP_EEPROM_VENDOR_OUI_SIZE 3
#define SFP_EEPROM_PART_NO_ADDR 0x28
#define SFP_EEPROM_PART_NO_SIZE 16
#define PWR_FLT_ERR_MSG_LEN 250
#define XGXS_EXT_PHY_TYPE(ext_phy_config) \
((ext_phy_config) & PORT_HW_CFG_XGXS_EXT_PHY_TYPE_MASK)
#define XGXS_EXT_PHY_ADDR(ext_phy_config) \
(((ext_phy_config) & PORT_HW_CFG_XGXS_EXT_PHY_ADDR_MASK) >> \
PORT_HW_CFG_XGXS_EXT_PHY_ADDR_SHIFT)
#define SERDES_EXT_PHY_TYPE(ext_phy_config) \
((ext_phy_config) & PORT_HW_CFG_SERDES_EXT_PHY_TYPE_MASK)
/* Single Media Direct board is the plain 577xx board with CX4/RJ45 jacks */
#define SINGLE_MEDIA_DIRECT(params) (params->num_phys == 1)
/* Single Media board contains single external phy */
#define SINGLE_MEDIA(params) (params->num_phys == 2)
/* Dual Media board contains two external phy with different media */
#define DUAL_MEDIA(params) (params->num_phys == 3)
#define FW_PARAM_MDIO_CTRL_OFFSET 16
#define FW_PARAM_SET(phy_addr, phy_type, mdio_access) \
(phy_addr | phy_type | mdio_access << FW_PARAM_MDIO_CTRL_OFFSET)
#define PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_PAUSEABLE 170
#define PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_NON_PAUSEABLE 0
#define PFC_BRB_MAC_PAUSE_XON_THRESHOLD_PAUSEABLE 250
#define PFC_BRB_MAC_PAUSE_XON_THRESHOLD_NON_PAUSEABLE 0
#define PFC_BRB_MAC_FULL_XOFF_THRESHOLD_PAUSEABLE 10
#define PFC_BRB_MAC_FULL_XOFF_THRESHOLD_NON_PAUSEABLE 90
#define PFC_BRB_MAC_FULL_XON_THRESHOLD_PAUSEABLE 50
#define PFC_BRB_MAC_FULL_XON_THRESHOLD_NON_PAUSEABLE 250
#define PFC_BRB_FULL_LB_XOFF_THRESHOLD 170
#define PFC_BRB_FULL_LB_XON_THRESHOLD 250
/***********************************************************/
/* Structs */
/***********************************************************/
#define INT_PHY 0
#define EXT_PHY1 1
#define EXT_PHY2 2
#define MAX_PHYS 3
/* Same configuration is shared between the XGXS and the first external phy */
#define LINK_CONFIG_SIZE (MAX_PHYS - 1)
#define LINK_CONFIG_IDX(_phy_idx) ((_phy_idx == INT_PHY) ? \
0 : (_phy_idx - 1))
/***********************************************************/
/* bnx2x_phy struct */
/* Defines the required arguments and function per phy */
/***********************************************************/
struct link_vars;
struct link_params;
struct bnx2x_phy;
typedef u8 (*config_init_t)(struct bnx2x_phy *phy, struct link_params *params,
struct link_vars *vars);
typedef u8 (*read_status_t)(struct bnx2x_phy *phy, struct link_params *params,
struct link_vars *vars);
typedef void (*link_reset_t)(struct bnx2x_phy *phy,
struct link_params *params);
typedef void (*config_loopback_t)(struct bnx2x_phy *phy,
struct link_params *params);
typedef u8 (*format_fw_ver_t)(u32 raw, u8 *str, u16 *len);
typedef void (*hw_reset_t)(struct bnx2x_phy *phy, struct link_params *params);
typedef void (*set_link_led_t)(struct bnx2x_phy *phy,
struct link_params *params, u8 mode);
typedef void (*phy_specific_func_t)(struct bnx2x_phy *phy,
struct link_params *params, u32 action);
struct bnx2x_phy {
u32 type;
/* Loaded during init */
u8 addr;
u8 flags;
/* Require HW lock */
#define FLAGS_HW_LOCK_REQUIRED (1<<0)
/* No Over-Current detection */
#define FLAGS_NOC (1<<1)
/* Fan failure detection required */
#define FLAGS_FAN_FAILURE_DET_REQ (1<<2)
/* Initialize first the XGXS and only then the phy itself */
#define FLAGS_INIT_XGXS_FIRST (1<<3)
#define FLAGS_REARM_LATCH_SIGNAL (1<<6)
#define FLAGS_SFP_NOT_APPROVED (1<<7)
u8 def_md_devad;
u8 reserved;
/* preemphasis values for the rx side */
u16 rx_preemphasis[4];
/* preemphasis values for the tx side */
u16 tx_preemphasis[4];
/* EMAC address for access MDIO */
u32 mdio_ctrl;
u32 supported;
u32 media_type;
#define ETH_PHY_UNSPECIFIED 0x0
#define ETH_PHY_SFP_FIBER 0x1
#define ETH_PHY_XFP_FIBER 0x2
#define ETH_PHY_DA_TWINAX 0x3
#define ETH_PHY_BASE_T 0x4
#define ETH_PHY_NOT_PRESENT 0xff
/* The address in which version is located*/
u32 ver_addr;
u16 req_flow_ctrl;
u16 req_line_speed;
u32 speed_cap_mask;
u16 req_duplex;
u16 rsrv;
/* Called per phy/port init, and it configures LASI, speed, autoneg,
duplex, flow control negotiation, etc. */
config_init_t config_init;
/* Called due to interrupt. It determines the link, speed */
read_status_t read_status;
/* Called when driver is unloading. Should reset the phy */
link_reset_t link_reset;
/* Set the loopback configuration for the phy */
config_loopback_t config_loopback;
/* Format the given raw number into str up to len */
format_fw_ver_t format_fw_ver;
/* Reset the phy (both ports) */
hw_reset_t hw_reset;
/* Set link led mode (on/off/oper)*/
set_link_led_t set_link_led;
/* PHY Specific tasks */
phy_specific_func_t phy_specific_func;
#define DISABLE_TX 1
#define ENABLE_TX 2
};
/* Inputs parameters to the CLC */
struct link_params {
u8 port;
/* Default / User Configuration */
u8 loopback_mode;
#define LOOPBACK_NONE 0
#define LOOPBACK_EMAC 1
#define LOOPBACK_BMAC 2
#define LOOPBACK_XGXS 3
#define LOOPBACK_EXT_PHY 4
#define LOOPBACK_EXT 5
/* Device parameters */
u8 mac_addr[6];
u16 req_duplex[LINK_CONFIG_SIZE];
u16 req_flow_ctrl[LINK_CONFIG_SIZE];
u16 req_line_speed[LINK_CONFIG_SIZE]; /* Also determine AutoNeg */
/* shmem parameters */
u32 shmem_base;
u32 shmem2_base;
u32 speed_cap_mask[LINK_CONFIG_SIZE];
u32 switch_cfg;
#define SWITCH_CFG_1G PORT_FEATURE_CON_SWITCH_1G_SWITCH
#define SWITCH_CFG_10G PORT_FEATURE_CON_SWITCH_10G_SWITCH
#define SWITCH_CFG_AUTO_DETECT PORT_FEATURE_CON_SWITCH_AUTO_DETECT
u32 lane_config;
/* Phy register parameter */
u32 chip_id;
u32 feature_config_flags;
#define FEATURE_CONFIG_OVERRIDE_PREEMPHASIS_ENABLED (1<<0)
#define FEATURE_CONFIG_PFC_ENABLED (1<<1)
#define FEATURE_CONFIG_BC_SUPPORTS_OPT_MDL_VRFY (1<<2)
#define FEATURE_CONFIG_BC_SUPPORTS_DUAL_PHY_OPT_MDL_VRFY (1<<3)
/* Will be populated during common init */
struct bnx2x_phy phy[MAX_PHYS];
/* Will be populated during common init */
u8 num_phys;
u8 rsrv;
u16 hw_led_mode; /* part of the hw_config read from the shmem */
u32 multi_phy_config;
/* Device pointer passed to all callback functions */
struct bnx2x *bp;
u16 req_fc_auto_adv; /* Should be set to TX / BOTH when
req_flow_ctrl is set to AUTO */
};
/* Output parameters */
struct link_vars {
u8 phy_flags;
u8 mac_type;
#define MAC_TYPE_NONE 0
#define MAC_TYPE_EMAC 1
#define MAC_TYPE_BMAC 2
u8 phy_link_up; /* internal phy link indication */
u8 link_up;
u16 line_speed;
u16 duplex;
u16 flow_ctrl;
u16 ieee_fc;
/* The same definitions as the shmem parameter */
u32 link_status;
};
/***********************************************************/
/* Functions */
/***********************************************************/
u8 bnx2x_phy_init(struct link_params *input, struct link_vars *output);
/* Reset the link. Should be called when driver or interface goes down
Before calling phy firmware upgrade, the reset_ext_phy should be set
to 0 */
u8 bnx2x_link_reset(struct link_params *params, struct link_vars *vars,
u8 reset_ext_phy);
/* bnx2x_link_update should be called upon link interrupt */
u8 bnx2x_link_update(struct link_params *input, struct link_vars *output);
/* use the following phy functions to read/write from external_phy
In order to use it to read/write internal phy registers, use
DEFAULT_PHY_DEV_ADDR as devad, and (_bank + (_addr & 0xf)) as
the register */
u8 bnx2x_phy_read(struct link_params *params, u8 phy_addr,
u8 devad, u16 reg, u16 *ret_val);
u8 bnx2x_phy_write(struct link_params *params, u8 phy_addr,
u8 devad, u16 reg, u16 val);
/* Reads the link_status from the shmem,
and update the link vars accordingly */
void bnx2x_link_status_update(struct link_params *input,
struct link_vars *output);
/* returns string representing the fw_version of the external phy */
u8 bnx2x_get_ext_phy_fw_version(struct link_params *params, u8 driver_loaded,
u8 *version, u16 len);
/* Set/Unset the led
Basically, the CLC takes care of the led for the link, but in case one needs
to set/unset the led unnaturally, set the "mode" to LED_MODE_OPER to
blink the led, and LED_MODE_OFF to set the led off.*/
u8 bnx2x_set_led(struct link_params *params, struct link_vars *vars,
u8 mode, u32 speed);
#define LED_MODE_OFF 0
#define LED_MODE_ON 1
#define LED_MODE_OPER 2
#define LED_MODE_FRONT_PANEL_OFF 3
/* bnx2x_handle_module_detect_int should be called upon module detection
interrupt */
void bnx2x_handle_module_detect_int(struct link_params *params);
/* Get the actual link status. In case it returns 0, link is up,
otherwise link is down*/
u8 bnx2x_test_link(struct link_params *input, struct link_vars *vars,
u8 is_serdes);
/* One-time initialization for external phy after power up */
u8 bnx2x_common_init_phy(struct bnx2x *bp, u32 shmem_base_path[],
u32 shmem2_base_path[], u32 chip_id);
/* Reset the external PHY using GPIO */
void bnx2x_ext_phy_hw_reset(struct bnx2x *bp, u8 port);
/* Reset the external of SFX7101 */
void bnx2x_sfx7101_sp_sw_reset(struct bnx2x *bp, struct bnx2x_phy *phy);
void bnx2x_hw_reset_phy(struct link_params *params);
/* Checks if HW lock is required for this phy/board type */
u8 bnx2x_hw_lock_required(struct bnx2x *bp, u32 shmem_base,
u32 shmem2_base);
/* Check swap bit and adjust PHY order */
u32 bnx2x_phy_selection(struct link_params *params);
/* Probe the phys on board, and populate them in "params" */
u8 bnx2x_phy_probe(struct link_params *params);
/* Checks if fan failure detection is required on one of the phys on board */
u8 bnx2x_fan_failure_det_req(struct bnx2x *bp, u32 shmem_base,
u32 shmem2_base, u8 port);
/* PFC port configuration params */
struct bnx2x_nig_brb_pfc_port_params {
/* NIG */
u32 pause_enable;
u32 llfc_out_en;
u32 llfc_enable;
u32 pkt_priority_to_cos;
u32 rx_cos0_priority_mask;
u32 rx_cos1_priority_mask;
u32 llfc_high_priority_classes;
u32 llfc_low_priority_classes;
/* BRB */
u32 cos0_pauseable;
u32 cos1_pauseable;
};
/**
* Used to update the PFC attributes in EMAC, BMAC, NIG and BRB
* when link is already up
*/
void bnx2x_update_pfc(struct link_params *params,
struct link_vars *vars,
struct bnx2x_nig_brb_pfc_port_params *pfc_params);
/* Used to configure the ETS to disable */
void bnx2x_ets_disabled(struct link_params *params);
/* Used to configure the ETS to BW limited */
void bnx2x_ets_bw_limit(const struct link_params *params, const u32 cos0_bw,
const u32 cos1_bw);
/* Used to configure the ETS to strict */
u8 bnx2x_ets_strict(const struct link_params *params, const u8 strict_cos);
/* Read pfc statistic*/
void bnx2x_pfc_statistic(struct link_params *params, struct link_vars *vars,
u32 pfc_frames_sent[2],
u32 pfc_frames_received[2]);
#endif /* BNX2X_LINK_H */
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