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linux/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h
Yaniv Rosner 6e9e564437 bnx2x: Fix link problems for 1G SFP RJ45 module 
When 1G SFP RJ45 module is detected, driver must reset the Tx laser
in order to prevent link issues. As part of change, the link_attr_sync
was relocated from vars to params.

Signed-off-by: Yaniv Rosner <Yaniv.Rosner@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-05 17:28:37 -07:00

545 lines
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/* Copyright 2008-2013 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 NET_SERDES_IF_XFI 1
#define NET_SERDES_IF_SFI 2
#define NET_SERDES_IF_KR 3
#define NET_SERDES_IF_DXGXS 4
#define SPEED_AUTO_NEG 0
#define SPEED_20000 20000
#define I2C_DEV_ADDR_A0 0xa0
#define I2C_DEV_ADDR_A2 0xa2
#define SFP_EEPROM_PAGE_SIZE 16
#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 SFP_EEPROM_REVISION_ADDR 0x38
#define SFP_EEPROM_REVISION_SIZE 4
#define SFP_EEPROM_SERIAL_ADDR 0x44
#define SFP_EEPROM_SERIAL_SIZE 16
#define SFP_EEPROM_DATE_ADDR 0x54 /* ASCII YYMMDD */
#define SFP_EEPROM_DATE_SIZE 6
#define SFP_EEPROM_DIAG_TYPE_ADDR 0x5c
#define SFP_EEPROM_DIAG_TYPE_SIZE 1
#define SFP_EEPROM_DIAG_ADDR_CHANGE_REQ (1<<2)
#define SFP_EEPROM_SFF_8472_COMP_ADDR 0x5e
#define SFP_EEPROM_SFF_8472_COMP_SIZE 1
#define SFP_EEPROM_A2_CHECKSUM_RANGE 0x5e
#define SFP_EEPROM_A2_CC_DMI_ADDR 0x5f
#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_PHY_ADDR_MASK 0x000000FF
#define FW_PARAM_PHY_TYPE_MASK 0x0000FF00
#define FW_PARAM_MDIO_CTRL_MASK 0xFFFF0000
#define FW_PARAM_MDIO_CTRL_OFFSET 16
#define FW_PARAM_PHY_ADDR(fw_param) (fw_param & \
FW_PARAM_PHY_ADDR_MASK)
#define FW_PARAM_PHY_TYPE(fw_param) (fw_param & \
FW_PARAM_PHY_TYPE_MASK)
#define FW_PARAM_MDIO_CTRL(fw_param) ((fw_param & \
FW_PARAM_MDIO_CTRL_MASK) >> \
FW_PARAM_MDIO_CTRL_OFFSET)
#define FW_PARAM_SET(phy_addr, phy_type, mdio_access) \
(phy_addr | phy_type | mdio_access << FW_PARAM_MDIO_CTRL_OFFSET)
#define PFC_BRB_FULL_LB_XOFF_THRESHOLD 170
#define PFC_BRB_FULL_LB_XON_THRESHOLD 250
#define MAXVAL(a, b) (((a) > (b)) ? (a) : (b))
#define BMAC_CONTROL_RX_ENABLE 2
/***********************************************************/
/* 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_reg_set {
u8 devad;
u16 reg;
u16 val;
};
struct bnx2x_phy {
u32 type;
/* Loaded during init */
u8 addr;
u8 def_md_devad;
u16 flags;
/* 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_WC_DUAL_MODE (1<<4)
#define FLAGS_4_PORT_MODE (1<<5)
#define FLAGS_REARM_LATCH_SIGNAL (1<<6)
#define FLAGS_SFP_NOT_APPROVED (1<<7)
#define FLAGS_MDC_MDIO_WA (1<<8)
#define FLAGS_DUMMY_READ (1<<9)
#define FLAGS_MDC_MDIO_WA_B0 (1<<10)
#define FLAGS_TX_ERROR_CHECK (1<<12)
#define FLAGS_EEE (1<<13)
#define FLAGS_MDC_MDIO_WA_G (1<<15)
/* 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_SFPP_10G_FIBER 0x1
#define ETH_PHY_XFP_FIBER 0x2
#define ETH_PHY_DA_TWINAX 0x3
#define ETH_PHY_BASE_T 0x4
#define ETH_PHY_SFP_1G_FIBER 0x5
#define ETH_PHY_KR 0xf0
#define ETH_PHY_CX4 0xf1
#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
#define PHY_INIT 3
};
/* 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
#define LOOPBACK_UMAC 6
#define LOOPBACK_XMAC 7
/* 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;
/* features */
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)
#define FEATURE_CONFIG_BC_SUPPORTS_AFEX (1<<8)
#define FEATURE_CONFIG_AUTOGREEEN_ENABLED (1<<9)
#define FEATURE_CONFIG_BC_SUPPORTS_SFP_TX_DISABLED (1<<10)
#define FEATURE_CONFIG_DISABLE_REMOTE_FAULT_DET (1<<11)
#define FEATURE_CONFIG_MT_SUPPORT (1<<13)
#define FEATURE_CONFIG_BOOT_FROM_SAN (1<<14)
/* Will be populated during common init */
struct bnx2x_phy phy[MAX_PHYS];
/* Will be populated during common init */
u8 num_phys;
u8 rsrv;
/* Used to configure the EEE Tx LPI timer, has several modes of
* operation, according to bits 29:28 -
* 2'b00: Timer will be configured by nvram, output will be the value
* from nvram.
* 2'b01: Timer will be configured by nvram, output will be in
* microseconds.
* 2'b10: bits 1:0 contain an nvram value which will be used instead
* of the one located in the nvram. Output will be that value.
* 2'b11: bits 19:0 contain the idle timer in microseconds; output
* will be in microseconds.
* Bits 31:30 should be 2'b11 in order for EEE to be enabled.
*/
u32 eee_mode;
#define EEE_MODE_NVRAM_BALANCED_TIME (0xa00)
#define EEE_MODE_NVRAM_AGGRESSIVE_TIME (0x100)
#define EEE_MODE_NVRAM_LATENCY_TIME (0x6000)
#define EEE_MODE_NVRAM_MASK (0x3)
#define EEE_MODE_TIMER_MASK (0xfffff)
#define EEE_MODE_OUTPUT_TIME (1<<28)
#define EEE_MODE_OVERRIDE_NVRAM (1<<29)
#define EEE_MODE_ENABLE_LPI (1<<30)
#define EEE_MODE_ADV_LPI (1<<31)
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 */
u16 link_flags;
#define LINK_FLAGS_INT_DISABLED (1<<0)
#define PHY_INITIALIZED (1<<1)
u32 lfa_base;
/* The same definitions as the shmem2 parameter */
u32 link_attr_sync;
};
/* Output parameters */
struct link_vars {
u8 phy_flags;
#define PHY_XGXS_FLAG (1<<0)
#define PHY_SGMII_FLAG (1<<1)
#define PHY_PHYSICAL_LINK_FLAG (1<<2)
#define PHY_HALF_OPEN_CONN_FLAG (1<<3)
#define PHY_OVER_CURRENT_FLAG (1<<4)
#define PHY_SFP_TX_FAULT_FLAG (1<<5)
u8 mac_type;
#define MAC_TYPE_NONE 0
#define MAC_TYPE_EMAC 1
#define MAC_TYPE_BMAC 2
#define MAC_TYPE_UMAC 3
#define MAC_TYPE_XMAC 4
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;
u32 eee_status;
u8 fault_detected;
u8 check_kr2_recovery_cnt;
#define CHECK_KR2_RECOVERY_CNT 5
u16 periodic_flags;
#define PERIODIC_FLAGS_LINK_EVENT 0x0001
u32 aeu_int_mask;
u8 rx_tx_asic_rst;
u8 turn_to_run_wc_rt;
u16 rsrv2;
};
/***********************************************************/
/* Functions */
/***********************************************************/
int bnx2x_phy_init(struct link_params *params, struct link_vars *vars);
/* 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 */
int bnx2x_link_reset(struct link_params *params, struct link_vars *vars,
u8 reset_ext_phy);
int bnx2x_lfa_reset(struct link_params *params, struct link_vars *vars);
/* bnx2x_link_update should be called upon link interrupt */
int bnx2x_link_update(struct link_params *params, struct link_vars *vars);
/* 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 */
int bnx2x_phy_read(struct link_params *params, u8 phy_addr,
u8 devad, u16 reg, u16 *ret_val);
int 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 */
int bnx2x_get_ext_phy_fw_version(struct link_params *params, 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.*/
int 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*/
int bnx2x_test_link(struct link_params *params, struct link_vars *vars,
u8 is_serdes);
/* One-time initialization for external phy after power up */
int 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);
/* Read "byte_cnt" bytes from address "addr" from the SFP+ EEPROM */
int bnx2x_read_sfp_module_eeprom(struct bnx2x_phy *phy,
struct link_params *params, u8 dev_addr,
u16 addr, u16 byte_cnt, u8 *o_buf);
void bnx2x_hw_reset_phy(struct link_params *params);
/* 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" */
int 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);
/* Open / close the gate between the NIG and the BRB */
void bnx2x_set_rx_filter(struct link_params *params, u8 en);
/* DCBX structs */
/* Number of maximum COS per chip */
#define DCBX_E2E3_MAX_NUM_COS (2)
#define DCBX_E3B0_MAX_NUM_COS_PORT0 (6)
#define DCBX_E3B0_MAX_NUM_COS_PORT1 (3)
#define DCBX_E3B0_MAX_NUM_COS ( \
MAXVAL(DCBX_E3B0_MAX_NUM_COS_PORT0, \
DCBX_E3B0_MAX_NUM_COS_PORT1))
#define DCBX_MAX_NUM_COS ( \
MAXVAL(DCBX_E3B0_MAX_NUM_COS, \
DCBX_E2E3_MAX_NUM_COS))
/* 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;
u8 num_of_rx_cos_priority_mask;
u32 rx_cos_priority_mask[DCBX_MAX_NUM_COS];
u32 llfc_high_priority_classes;
u32 llfc_low_priority_classes;
};
/* ETS port configuration params */
struct bnx2x_ets_bw_params {
u8 bw;
};
struct bnx2x_ets_sp_params {
/**
* valid values are 0 - 5. 0 is highest strict priority.
* There can't be two COS's with the same pri.
*/
u8 pri;
};
enum bnx2x_cos_state {
bnx2x_cos_state_strict = 0,
bnx2x_cos_state_bw = 1,
};
struct bnx2x_ets_cos_params {
enum bnx2x_cos_state state ;
union {
struct bnx2x_ets_bw_params bw_params;
struct bnx2x_ets_sp_params sp_params;
} params;
};
struct bnx2x_ets_params {
u8 num_of_cos; /* Number of valid COS entries*/
struct bnx2x_ets_cos_params cos[DCBX_MAX_NUM_COS];
};
/* Used to update the PFC attributes in EMAC, BMAC, NIG and BRB
* when link is already up
*/
int 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 */
int bnx2x_ets_disabled(struct link_params *params,
struct link_vars *vars);
/* 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 */
int bnx2x_ets_strict(const struct link_params *params, const u8 strict_cos);
/* Configure the COS to ETS according to BW and SP settings.*/
int bnx2x_ets_e3b0_config(const struct link_params *params,
const struct link_vars *vars,
struct bnx2x_ets_params *ets_params);
void bnx2x_init_mod_abs_int(struct bnx2x *bp, struct link_vars *vars,
u32 chip_id, u32 shmem_base, u32 shmem2_base,
u8 port);
void bnx2x_period_func(struct link_params *params, struct link_vars *vars);
#endif /* BNX2X_LINK_H */
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