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bnx2x: Add DCB/PFC support - link layer

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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>
This commit is contained in:
Vladislav Zolotarov 2010-12-13 05:44:25 +00:00 committed by David S. Miller
parent e4901dde12
commit bcab15c5d7
3 changed files with 689 additions and 39 deletions
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665
drivers/net/bnx2x/bnx2x_link.c
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@ -164,7 +164,8 @@
#define EDC_MODE_PASSIVE_DAC 0x0055
#define ETS_BW_LIMIT_CREDIT_UPPER_BOUND (0x5000)
#define ETS_BW_LIMIT_CREDIT_WEIGHT (0x5000)
/**********************************************************/
/* INTERFACE */
/**********************************************************/
@ -205,6 +206,273 @@ static u32 bnx2x_bits_dis(struct bnx2x *bp, u32 reg, u32 bits)
return val;
}
/******************************************************************/
/* ETS section */
/******************************************************************/
void bnx2x_ets_disabled(struct link_params *params)
{
/* ETS disabled configuration*/
struct bnx2x *bp = params->bp;
DP(NETIF_MSG_LINK, "ETS disabled configuration\n");
/**
* mapping between entry priority to client number (0,1,2 -debug and
* management clients, 3 - COS0 client, 4 - COS client)(HIGHEST)
* 3bits client num.
* PRI4 | PRI3 | PRI2 | PRI1 | PRI0
* cos1-100 cos0-011 dbg1-010 dbg0-001 MCP-000
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_PRIORITY_CLIENT, 0x4688);
/**
* Bitmap of 5bits length. Each bit specifies whether the entry behaves
* as strict. Bits 0,1,2 - debug and management entries, 3 -
* COS0 entry, 4 - COS1 entry.
* COS1 | COS0 | DEBUG1 | DEBUG0 | MGMT
* bit4 bit3 bit2 bit1 bit0
* MCP and debug are strict
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_STRICT, 0x7);
/* defines which entries (clients) are subjected to WFQ arbitration */
REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_SUBJECT2WFQ, 0);
/**
* For strict priority entries defines the number of consecutive
* slots for the highest priority.
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_NUM_STRICT_ARB_SLOTS, 0x100);
/**
* mapping between the CREDIT_WEIGHT registers and actual client
* numbers
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_CREDIT_MAP, 0);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_0, 0);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_1, 0);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_0, 0);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_1, 0);
REG_WR(bp, PBF_REG_HIGH_PRIORITY_COS_NUM, 0);
/* ETS mode disable */
REG_WR(bp, PBF_REG_ETS_ENABLED, 0);
/**
* If ETS mode is enabled (there is no strict priority) defines a WFQ
* weight for COS0/COS1.
*/
REG_WR(bp, PBF_REG_COS0_WEIGHT, 0x2710);
REG_WR(bp, PBF_REG_COS1_WEIGHT, 0x2710);
/* Upper bound that COS0_WEIGHT can reach in the WFQ arbiter */
REG_WR(bp, PBF_REG_COS0_UPPER_BOUND, 0x989680);
REG_WR(bp, PBF_REG_COS1_UPPER_BOUND, 0x989680);
/* Defines the number of consecutive slots for the strict priority */
REG_WR(bp, PBF_REG_NUM_STRICT_ARB_SLOTS, 0);
}
void bnx2x_ets_bw_limit_common(const struct link_params *params)
{
/* ETS disabled configuration */
struct bnx2x *bp = params->bp;
DP(NETIF_MSG_LINK, "ETS enabled BW limit configuration\n");
/**
* defines which entries (clients) are subjected to WFQ arbitration
* COS0 0x8
* COS1 0x10
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_SUBJECT2WFQ, 0x18);
/**
* mapping between the ARB_CREDIT_WEIGHT registers and actual
* client numbers (WEIGHT_0 does not actually have to represent
* client 0)
* PRI4 | PRI3 | PRI2 | PRI1 | PRI0
* cos1-001 cos0-000 dbg1-100 dbg0-011 MCP-010
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_CREDIT_MAP, 0x111A);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_0,
ETS_BW_LIMIT_CREDIT_UPPER_BOUND);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_1,
ETS_BW_LIMIT_CREDIT_UPPER_BOUND);
/* ETS mode enabled*/
REG_WR(bp, PBF_REG_ETS_ENABLED, 1);
/* Defines the number of consecutive slots for the strict priority */
REG_WR(bp, PBF_REG_NUM_STRICT_ARB_SLOTS, 0);
/**
* Bitmap of 5bits length. Each bit specifies whether the entry behaves
* as strict. Bits 0,1,2 - debug and management entries, 3 - COS0
* entry, 4 - COS1 entry.
* COS1 | COS0 | DEBUG21 | DEBUG0 | MGMT
* bit4 bit3 bit2 bit1 bit0
* MCP and debug are strict
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_STRICT, 0x7);
/* Upper bound that COS0_WEIGHT can reach in the WFQ arbiter.*/
REG_WR(bp, PBF_REG_COS0_UPPER_BOUND,
ETS_BW_LIMIT_CREDIT_UPPER_BOUND);
REG_WR(bp, PBF_REG_COS1_UPPER_BOUND,
ETS_BW_LIMIT_CREDIT_UPPER_BOUND);
}
void bnx2x_ets_bw_limit(const struct link_params *params, const u32 cos0_bw,
const u32 cos1_bw)
{
/* ETS disabled configuration*/
struct bnx2x *bp = params->bp;
const u32 total_bw = cos0_bw + cos1_bw;
u32 cos0_credit_weight = 0;
u32 cos1_credit_weight = 0;
DP(NETIF_MSG_LINK, "ETS enabled BW limit configuration\n");
if ((0 == total_bw) ||
(0 == cos0_bw) ||
(0 == cos1_bw)) {
DP(NETIF_MSG_LINK,
"bnx2x_ets_bw_limit: Total BW can't be zero\n");
return;
}
cos0_credit_weight = (cos0_bw * ETS_BW_LIMIT_CREDIT_WEIGHT)/
total_bw;
cos1_credit_weight = (cos1_bw * ETS_BW_LIMIT_CREDIT_WEIGHT)/
total_bw;
bnx2x_ets_bw_limit_common(params);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_0, cos0_credit_weight);
REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_1, cos1_credit_weight);
REG_WR(bp, PBF_REG_COS0_WEIGHT, cos0_credit_weight);
REG_WR(bp, PBF_REG_COS1_WEIGHT, cos1_credit_weight);
}
u8 bnx2x_ets_strict(const struct link_params *params, const u8 strict_cos)
{
/* ETS disabled configuration*/
struct bnx2x *bp = params->bp;
u32 val = 0;
if ((1 < strict_cos) && (NULL == params))
return -EINVAL;
DP(NETIF_MSG_LINK, "ETS enabled strict configuration\n");
/**
* Bitmap of 5bits length. Each bit specifies whether the entry behaves
* as strict. Bits 0,1,2 - debug and management entries,
* 3 - COS0 entry, 4 - COS1 entry.
* COS1 | COS0 | DEBUG21 | DEBUG0 | MGMT
* bit4 bit3 bit2 bit1 bit0
* MCP and debug are strict
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_STRICT, 0x1F);
/**
* For strict priority entries defines the number of consecutive slots
* for the highest priority.
*/
REG_WR(bp, NIG_REG_P0_TX_ARB_NUM_STRICT_ARB_SLOTS, 0x100);
/* ETS mode disable */
REG_WR(bp, PBF_REG_ETS_ENABLED, 0);
/* Defines the number of consecutive slots for the strict priority */
REG_WR(bp, PBF_REG_NUM_STRICT_ARB_SLOTS, 0x100);
/* Defines the number of consecutive slots for the strict priority */
REG_WR(bp, PBF_REG_HIGH_PRIORITY_COS_NUM, strict_cos);
/**
* mapping between entry priority to client number (0,1,2 -debug and
* management clients, 3 - COS0 client, 4 - COS client)(HIGHEST)
* 3bits client num.
* PRI4 | PRI3 | PRI2 | PRI1 | PRI0
* dbg0-010 dbg1-001 cos1-100 cos0-011 MCP-000
* dbg0-010 dbg1-001 cos0-011 cos1-100 MCP-000
*/
val = (0 == strict_cos) ? 0x2318 : 0x22E0;
REG_WR(bp, NIG_REG_P0_TX_ARB_PRIORITY_CLIENT, val);
return 0;
}
/******************************************************************/
/* ETS section */
/******************************************************************/
static void bnx2x_bmac2_get_pfc_stat(struct link_params *params,
u32 pfc_frames_sent[2],
u32 pfc_frames_received[2])
{
/* Read pfc statistic */
struct bnx2x *bp = params->bp;
u32 bmac_addr = params->port ? NIG_REG_INGRESS_BMAC1_MEM :
NIG_REG_INGRESS_BMAC0_MEM;
DP(NETIF_MSG_LINK, "pfc statistic read from BMAC\n");
REG_RD_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_STAT_GTPP,
pfc_frames_sent, 2);
REG_RD_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_RX_STAT_GRPP,
pfc_frames_received, 2);
}
static void bnx2x_emac_get_pfc_stat(struct link_params *params,
u32 pfc_frames_sent[2],
u32 pfc_frames_received[2])
{
/* Read pfc statistic */
struct bnx2x *bp = params->bp;
u32 emac_base = params->port ? GRCBASE_EMAC1 : GRCBASE_EMAC0;
u32 val_xon = 0;
u32 val_xoff = 0;
DP(NETIF_MSG_LINK, "pfc statistic read from EMAC\n");
/* PFC received frames */
val_xoff = REG_RD(bp, emac_base +
EMAC_REG_RX_PFC_STATS_XOFF_RCVD);
val_xoff &= EMAC_REG_RX_PFC_STATS_XOFF_RCVD_COUNT;
val_xon = REG_RD(bp, emac_base + EMAC_REG_RX_PFC_STATS_XON_RCVD);
val_xon &= EMAC_REG_RX_PFC_STATS_XON_RCVD_COUNT;
pfc_frames_received[0] = val_xon + val_xoff;
/* PFC received sent */
val_xoff = REG_RD(bp, emac_base +
EMAC_REG_RX_PFC_STATS_XOFF_SENT);
val_xoff &= EMAC_REG_RX_PFC_STATS_XOFF_SENT_COUNT;
val_xon = REG_RD(bp, emac_base + EMAC_REG_RX_PFC_STATS_XON_SENT);
val_xon &= EMAC_REG_RX_PFC_STATS_XON_SENT_COUNT;
pfc_frames_sent[0] = val_xon + val_xoff;
}
void bnx2x_pfc_statistic(struct link_params *params, struct link_vars *vars,
u32 pfc_frames_sent[2],
u32 pfc_frames_received[2])
{
/* Read pfc statistic */
struct bnx2x *bp = params->bp;
u32 val = 0;
DP(NETIF_MSG_LINK, "pfc statistic\n");
if (!vars->link_up)
return;
val = REG_RD(bp, MISC_REG_RESET_REG_2);
if ((val & (MISC_REGISTERS_RESET_REG_2_RST_BMAC0 << params->port))
== 0) {
DP(NETIF_MSG_LINK, "About to read stats from EMAC\n");
bnx2x_emac_get_pfc_stat(params, pfc_frames_sent,
pfc_frames_received);
} else {
DP(NETIF_MSG_LINK, "About to read stats from BMAC\n");
bnx2x_bmac2_get_pfc_stat(params, pfc_frames_sent,
pfc_frames_received);
}
}
/******************************************************************/
/* MAC/PBF section */
/******************************************************************/
static void bnx2x_emac_init(struct link_params *params,
struct link_vars *vars)
{
@ -315,24 +583,55 @@ static u8 bnx2x_emac_enable(struct link_params *params,
/* pause enable/disable */
bnx2x_bits_dis(bp, emac_base + EMAC_REG_EMAC_RX_MODE,
EMAC_RX_MODE_FLOW_EN);
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX)
bnx2x_bits_en(bp, emac_base +
EMAC_REG_EMAC_RX_MODE,
EMAC_RX_MODE_FLOW_EN);
bnx2x_bits_dis(bp, emac_base + EMAC_REG_EMAC_TX_MODE,
(EMAC_TX_MODE_EXT_PAUSE_EN |
EMAC_TX_MODE_FLOW_EN));
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)
bnx2x_bits_en(bp, emac_base +
EMAC_REG_EMAC_TX_MODE,
(EMAC_TX_MODE_EXT_PAUSE_EN |
EMAC_TX_MODE_FLOW_EN));
(EMAC_TX_MODE_EXT_PAUSE_EN |
EMAC_TX_MODE_FLOW_EN));
if (!(params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED)) {
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX)
bnx2x_bits_en(bp, emac_base +
EMAC_REG_EMAC_RX_MODE,
EMAC_RX_MODE_FLOW_EN);
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)
bnx2x_bits_en(bp, emac_base +
EMAC_REG_EMAC_TX_MODE,
(EMAC_TX_MODE_EXT_PAUSE_EN |
EMAC_TX_MODE_FLOW_EN));
} else
bnx2x_bits_en(bp, emac_base + EMAC_REG_EMAC_TX_MODE,
EMAC_TX_MODE_FLOW_EN);
}
/* KEEP_VLAN_TAG, promiscuous */
val = REG_RD(bp, emac_base + EMAC_REG_EMAC_RX_MODE);
val |= EMAC_RX_MODE_KEEP_VLAN_TAG | EMAC_RX_MODE_PROMISCUOUS;
/**
* Setting this bit causes MAC control frames (except for pause
* frames) to be passed on for processing. This setting has no
* affect on the operation of the pause frames. This bit effects
* all packets regardless of RX Parser packet sorting logic.
* Turn the PFC off to make sure we are in Xon state before
* enabling it.
*/
EMAC_WR(bp, EMAC_REG_RX_PFC_MODE, 0);
if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) {
DP(NETIF_MSG_LINK, "PFC is enabled\n");
/* Enable PFC again */
EMAC_WR(bp, EMAC_REG_RX_PFC_MODE,
EMAC_REG_RX_PFC_MODE_RX_EN |
EMAC_REG_RX_PFC_MODE_TX_EN |
EMAC_REG_RX_PFC_MODE_PRIORITIES);
EMAC_WR(bp, EMAC_REG_RX_PFC_PARAM,
((0x0101 <<
EMAC_REG_RX_PFC_PARAM_OPCODE_BITSHIFT) |
(0x00ff <<
EMAC_REG_RX_PFC_PARAM_PRIORITY_EN_BITSHIFT)));
val |= EMAC_RX_MODE_KEEP_MAC_CONTROL;
}
EMAC_WR(bp, EMAC_REG_EMAC_RX_MODE, val);
/* Set Loopback */
@ -362,7 +661,9 @@ static u8 bnx2x_emac_enable(struct link_params *params,
/* enable the NIG in/out to the emac */
REG_WR(bp, NIG_REG_EMAC0_IN_EN + port*4, 0x1);
val = 0;
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)
if ((params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED) ||
(vars->flow_ctrl & BNX2X_FLOW_CTRL_TX))
val = 1;
REG_WR(bp, NIG_REG_EMAC0_PAUSE_OUT_EN + port*4, val);
@ -383,9 +684,38 @@ static u8 bnx2x_emac_enable(struct link_params *params,
return 0;
}
static void bnx2x_update_bmac2(struct link_params *params,
struct link_vars *vars,
u8 is_lb)
static void bnx2x_update_pfc_bmac1(struct link_params *params,
struct link_vars *vars)
{
u32 wb_data[2];
struct bnx2x *bp = params->bp;
u32 bmac_addr = params->port ? NIG_REG_INGRESS_BMAC1_MEM :
NIG_REG_INGRESS_BMAC0_MEM;
u32 val = 0x14;
if ((!(params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED)) &&
(vars->flow_ctrl & BNX2X_FLOW_CTRL_RX))
/* Enable BigMAC to react on received Pause packets */
val |= (1<<5);
wb_data[0] = val;
wb_data[1] = 0;
REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_RX_CONTROL, wb_data, 2);
/* tx control */
val = 0xc0;
if (!(params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED) &&
(vars->flow_ctrl & BNX2X_FLOW_CTRL_TX))
val |= 0x800000;
wb_data[0] = val;
wb_data[1] = 0;
REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_TX_CONTROL, wb_data, 2);
}
static void bnx2x_update_pfc_bmac2(struct link_params *params,
struct link_vars *vars,
u8 is_lb)
{
/*
* Set rx control: Strip CRC and enable BigMAC to relay
@ -397,7 +727,9 @@ static void bnx2x_update_bmac2(struct link_params *params,
NIG_REG_INGRESS_BMAC0_MEM;
u32 val = 0x14;
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX)
if ((!(params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED)) &&
(vars->flow_ctrl & BNX2X_FLOW_CTRL_RX))
/* Enable BigMAC to react on received Pause packets */
val |= (1<<5);
wb_data[0] = val;
@ -408,14 +740,47 @@ static void bnx2x_update_bmac2(struct link_params *params,
/* Tx control */
val = 0xc0;
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)
if (!(params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED) &&
(vars->flow_ctrl & BNX2X_FLOW_CTRL_TX))
val |= 0x800000;
wb_data[0] = val;
wb_data[1] = 0;
REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_CONTROL,
wb_data, 2);
REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_CONTROL, wb_data, 2);
if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) {
DP(NETIF_MSG_LINK, "PFC is enabled\n");
/* Enable PFC RX & TX & STATS and set 8 COS */
wb_data[0] = 0x0;
wb_data[0] |= (1<<0); /* RX */
wb_data[0] |= (1<<1); /* TX */
wb_data[0] |= (1<<2); /* Force initial Xon */
wb_data[0] |= (1<<3); /* 8 cos */
wb_data[0] |= (1<<5); /* STATS */
wb_data[1] = 0;
REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_PFC_CONTROL,
wb_data, 2);
/* Clear the force Xon */
wb_data[0] &= ~(1<<2);
} else {
DP(NETIF_MSG_LINK, "PFC is disabled\n");
/* disable PFC RX & TX & STATS and set 8 COS */
wb_data[0] = 0x8;
wb_data[1] = 0;
}
REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_PFC_CONTROL, wb_data, 2);
/**
* Set Time (based unit is 512 bit time) between automatic
* re-sending of PP packets amd enable automatic re-send of
* Per-Priroity Packet as long as pp_gen is asserted and
* pp_disable is low.
*/
val = 0x8000;
if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED)
val |= (1<<16); /* enable automatic re-send */
wb_data[0] = val;
wb_data[1] = 0;
REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_PAUSE_CONTROL,
@ -427,6 +792,9 @@ static void bnx2x_update_bmac2(struct link_params *params,
val |= 0x4; /* Local loopback */
DP(NETIF_MSG_LINK, "enable bmac loopback\n");
}
/* When PFC enabled, Pass pause frames towards the NIG. */
if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED)
val |= ((1<<6)|(1<<5));
wb_data[0] = val;
wb_data[1] = 0;
@ -434,6 +802,239 @@ static void bnx2x_update_bmac2(struct link_params *params,
wb_data, 2);
}
static void bnx2x_update_pfc_brb(struct link_params *params,
struct link_vars *vars,
struct bnx2x_nig_brb_pfc_port_params *pfc_params)
{
struct bnx2x *bp = params->bp;
int set_pfc = params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED;
/* default - pause configuration */
u32 pause_xoff_th = PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_PAUSEABLE;
u32 pause_xon_th = PFC_BRB_MAC_PAUSE_XON_THRESHOLD_PAUSEABLE;
u32 full_xoff_th = PFC_BRB_MAC_FULL_XOFF_THRESHOLD_PAUSEABLE;
u32 full_xon_th = PFC_BRB_MAC_FULL_XON_THRESHOLD_PAUSEABLE;
if (set_pfc && pfc_params)
/* First COS */
if (!pfc_params->cos0_pauseable) {
pause_xoff_th =
PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_NON_PAUSEABLE;
pause_xon_th =
PFC_BRB_MAC_PAUSE_XON_THRESHOLD_NON_PAUSEABLE;
full_xoff_th =
PFC_BRB_MAC_FULL_XOFF_THRESHOLD_NON_PAUSEABLE;
full_xon_th =
PFC_BRB_MAC_FULL_XON_THRESHOLD_NON_PAUSEABLE;
}
/* The number of free blocks below which the pause signal to class 0
of MAC #n is asserted. n=0,1 */
REG_WR(bp, BRB1_REG_PAUSE_0_XOFF_THRESHOLD_0 , pause_xoff_th);
/* The number of free blocks above which the pause signal to class 0
of MAC #n is de-asserted. n=0,1 */
REG_WR(bp, BRB1_REG_PAUSE_0_XON_THRESHOLD_0 , pause_xon_th);
/* The number of free blocks below which the full signal to class 0
of MAC #n is asserted. n=0,1 */
REG_WR(bp, BRB1_REG_FULL_0_XOFF_THRESHOLD_0 , full_xoff_th);
/* The number of free blocks above which the full signal to class 0
of MAC #n is de-asserted. n=0,1 */
REG_WR(bp, BRB1_REG_FULL_0_XON_THRESHOLD_0 , full_xon_th);
if (set_pfc && pfc_params) {
/* Second COS */
if (pfc_params->cos1_pauseable) {
pause_xoff_th =
PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_PAUSEABLE;
pause_xon_th =
PFC_BRB_MAC_PAUSE_XON_THRESHOLD_PAUSEABLE;
full_xoff_th =
PFC_BRB_MAC_FULL_XOFF_THRESHOLD_PAUSEABLE;
full_xon_th =
PFC_BRB_MAC_FULL_XON_THRESHOLD_PAUSEABLE;
} else {
pause_xoff_th =
PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_NON_PAUSEABLE;
pause_xon_th =
PFC_BRB_MAC_PAUSE_XON_THRESHOLD_NON_PAUSEABLE;
full_xoff_th =
PFC_BRB_MAC_FULL_XOFF_THRESHOLD_NON_PAUSEABLE;
full_xon_th =
PFC_BRB_MAC_FULL_XON_THRESHOLD_NON_PAUSEABLE;
}
/**
* The number of free blocks below which the pause signal to
* class 1 of MAC #n is asserted. n=0,1
**/
REG_WR(bp, BRB1_REG_PAUSE_1_XOFF_THRESHOLD_0, pause_xoff_th);
/**
* The number of free blocks above which the pause signal to
* class 1 of MAC #n is de-asserted. n=0,1
**/
REG_WR(bp, BRB1_REG_PAUSE_1_XON_THRESHOLD_0, pause_xon_th);
/**
* The number of free blocks below which the full signal to
* class 1 of MAC #n is asserted. n=0,1
**/
REG_WR(bp, BRB1_REG_FULL_1_XOFF_THRESHOLD_0, full_xoff_th);
/**
* The number of free blocks above which the full signal to
* class 1 of MAC #n is de-asserted. n=0,1
**/
REG_WR(bp, BRB1_REG_FULL_1_XON_THRESHOLD_0, full_xon_th);
}
}
static void bnx2x_update_pfc_nig(struct link_params *params,
struct link_vars *vars,
struct bnx2x_nig_brb_pfc_port_params *nig_params)
{
u32 xcm_mask = 0, ppp_enable = 0, pause_enable = 0, llfc_out_en = 0;
u32 llfc_enable = 0, xcm0_out_en = 0, p0_hwpfc_enable = 0;
u32 pkt_priority_to_cos = 0;
u32 val;
struct bnx2x *bp = params->bp;
int port = params->port;
int set_pfc = params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED;
DP(NETIF_MSG_LINK, "updating pfc nig parameters\n");
/**
* When NIG_LLH0_XCM_MASK_REG_LLHX_XCM_MASK_BCN bit is set
* MAC control frames (that are not pause packets)
* will be forwarded to the XCM.
*/
xcm_mask = REG_RD(bp,
port ? NIG_REG_LLH1_XCM_MASK :
NIG_REG_LLH0_XCM_MASK);
/**
* nig params will override non PFC params, since it's possible to
* do transition from PFC to SAFC
*/
if (set_pfc) {
pause_enable = 0;
llfc_out_en = 0;
llfc_enable = 0;
ppp_enable = 1;
xcm_mask &= ~(port ? NIG_LLH1_XCM_MASK_REG_LLH1_XCM_MASK_BCN :
NIG_LLH0_XCM_MASK_REG_LLH0_XCM_MASK_BCN);
xcm0_out_en = 0;
p0_hwpfc_enable = 1;
} else {
if (nig_params) {
llfc_out_en = nig_params->llfc_out_en;
llfc_enable = nig_params->llfc_enable;
pause_enable = nig_params->pause_enable;
} else /*defaul non PFC mode - PAUSE */
pause_enable = 1;
xcm_mask |= (port ? NIG_LLH1_XCM_MASK_REG_LLH1_XCM_MASK_BCN :
NIG_LLH0_XCM_MASK_REG_LLH0_XCM_MASK_BCN);
xcm0_out_en = 1;
}
REG_WR(bp, port ? NIG_REG_LLFC_OUT_EN_1 :
NIG_REG_LLFC_OUT_EN_0, llfc_out_en);
REG_WR(bp, port ? NIG_REG_LLFC_ENABLE_1 :
NIG_REG_LLFC_ENABLE_0, llfc_enable);
REG_WR(bp, port ? NIG_REG_PAUSE_ENABLE_1 :
NIG_REG_PAUSE_ENABLE_0, pause_enable);
REG_WR(bp, port ? NIG_REG_PPP_ENABLE_1 :
NIG_REG_PPP_ENABLE_0, ppp_enable);
REG_WR(bp, port ? NIG_REG_LLH1_XCM_MASK :
NIG_REG_LLH0_XCM_MASK, xcm_mask);
REG_WR(bp, NIG_REG_LLFC_EGRESS_SRC_ENABLE_0, 0x7);
/* output enable for RX_XCM # IF */
REG_WR(bp, NIG_REG_XCM0_OUT_EN, xcm0_out_en);
/* HW PFC TX enable */
REG_WR(bp, NIG_REG_P0_HWPFC_ENABLE, p0_hwpfc_enable);
/* 0x2 = BMAC, 0x1= EMAC */
switch (vars->mac_type) {
case MAC_TYPE_EMAC:
val = 1;
break;
case MAC_TYPE_BMAC:
val = 0;
break;
default:
val = 0;
break;
}
REG_WR(bp, NIG_REG_EGRESS_EMAC0_PORT, val);
if (nig_params) {
pkt_priority_to_cos = nig_params->pkt_priority_to_cos;
REG_WR(bp, port ? NIG_REG_P1_RX_COS0_PRIORITY_MASK :
NIG_REG_P0_RX_COS0_PRIORITY_MASK,
nig_params->rx_cos0_priority_mask);
REG_WR(bp, port ? NIG_REG_P1_RX_COS1_PRIORITY_MASK :
NIG_REG_P0_RX_COS1_PRIORITY_MASK,
nig_params->rx_cos1_priority_mask);
REG_WR(bp, port ? NIG_REG_LLFC_HIGH_PRIORITY_CLASSES_1 :
NIG_REG_LLFC_HIGH_PRIORITY_CLASSES_0,
nig_params->llfc_high_priority_classes);
REG_WR(bp, port ? NIG_REG_LLFC_LOW_PRIORITY_CLASSES_1 :
NIG_REG_LLFC_LOW_PRIORITY_CLASSES_0,
nig_params->llfc_low_priority_classes);
}
REG_WR(bp, port ? NIG_REG_P1_PKT_PRIORITY_TO_COS :
NIG_REG_P0_PKT_PRIORITY_TO_COS,
pkt_priority_to_cos);
}
void bnx2x_update_pfc(struct link_params *params,
struct link_vars *vars,
struct bnx2x_nig_brb_pfc_port_params *pfc_params)
{
/**
* The PFC and pause are orthogonal to one another, meaning when
* PFC is enabled, the pause are disabled, and when PFC is
* disabled, pause are set according to the pause result.
*/
u32 val;
struct bnx2x *bp = params->bp;
/* update NIG params */
bnx2x_update_pfc_nig(params, vars, pfc_params);
/* update BRB params */
bnx2x_update_pfc_brb(params, vars, pfc_params);
if (!vars->link_up)
return;
val = REG_RD(bp, MISC_REG_RESET_REG_2);
if ((val & (MISC_REGISTERS_RESET_REG_2_RST_BMAC0 << params->port))
== 0) {
DP(NETIF_MSG_LINK, "About to update PFC in EMAC\n");
bnx2x_emac_enable(params, vars, 0);
return;
}
DP(NETIF_MSG_LINK, "About to update PFC in BMAC\n");
if (CHIP_IS_E2(bp))
bnx2x_update_pfc_bmac2(params, vars, 0);
else
bnx2x_update_pfc_bmac1(params, vars);
val = 0;
if ((params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED) ||
(vars->flow_ctrl & BNX2X_FLOW_CTRL_TX))
val = 1;
REG_WR(bp, NIG_REG_BMAC0_PAUSE_OUT_EN + params->port*4, val);
}
static u8 bnx2x_bmac1_enable(struct link_params *params,
struct link_vars *vars,
@ -465,15 +1066,6 @@ static u8 bnx2x_bmac1_enable(struct link_params *params,
REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_TX_SOURCE_ADDR,
wb_data, 2);
/* tx control */
val = 0xc0;
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)
val |= 0x800000;
wb_data[0] = val;
wb_data[1] = 0;
REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_TX_CONTROL,
wb_data, 2);
/* mac control */
val = 0x3;
if (is_lb) {
@ -491,14 +1083,7 @@ static u8 bnx2x_bmac1_enable(struct link_params *params,
REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_RX_MAX_SIZE,
wb_data, 2);
/* rx control set to don't strip crc */
val = 0x14;
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX)
val |= 0x20;
wb_data[0] = val;
wb_data[1] = 0;
REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_RX_CONTROL,
wb_data, 2);
bnx2x_update_pfc_bmac1(params, vars);
/* set tx mtu */
wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD;
@ -595,7 +1180,7 @@ static u8 bnx2x_bmac2_enable(struct link_params *params,
REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_CNT_MAX_SIZE,
wb_data, 2);
udelay(30);
bnx2x_update_bmac2(params, vars, is_lb);
bnx2x_update_pfc_bmac2(params, vars, is_lb);
return 0;
}
@ -627,7 +1212,9 @@ static u8 bnx2x_bmac_enable(struct link_params *params,
REG_WR(bp, NIG_REG_XGXS_LANE_SEL_P0 + port*4, 0x0);
REG_WR(bp, NIG_REG_EGRESS_EMAC0_PORT + port*4, 0x0);
val = 0;
if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)
if ((params->feature_config_flags &
FEATURE_CONFIG_PFC_ENABLED) ||
(vars->flow_ctrl & BNX2X_FLOW_CTRL_TX))
val = 1;
REG_WR(bp, NIG_REG_BMAC0_PAUSE_OUT_EN + port*4, val);
REG_WR(bp, NIG_REG_EGRESS_EMAC0_OUT_EN + port*4, 0x0);

16
drivers/net/bnx2x/bnx2x_link.h
View File

@ -65,6 +65,22 @@
#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 */
/***********************************************************/

47
drivers/net/bnx2x/bnx2x_reg.h
View File

@ -1615,6 +1615,8 @@
#define NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_NO_VLAN (0x1<<4)
#define NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_UNCST (0x1<<2)
#define NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_VLAN (0x1<<3)
#define NIG_LLH0_XCM_MASK_REG_LLH0_XCM_MASK_BCN (0x1<<0)
#define NIG_LLH1_XCM_MASK_REG_LLH1_XCM_MASK_BCN (0x1<<0)
#define NIG_MASK_INTERRUPT_PORT0_REG_MASK_EMAC0_MISC_MI_INT (0x1<<0)
#define NIG_MASK_INTERRUPT_PORT0_REG_MASK_SERDES0_LINK_STATUS (0x1<<9)
#define NIG_MASK_INTERRUPT_PORT0_REG_MASK_XGXS0_LINK10G (0x1<<15)
@ -1744,12 +1746,16 @@
~ppp_enable.ppp_enable = 0 and pause_enable.pause_enable =0 for the same
port */
#define NIG_REG_LLFC_ENABLE_0 0x16208
#define NIG_REG_LLFC_ENABLE_1 0x1620c
/* [RW 16] classes are high-priority for port0 */
#define NIG_REG_LLFC_HIGH_PRIORITY_CLASSES_0 0x16058
#define NIG_REG_LLFC_HIGH_PRIORITY_CLASSES_1 0x1605c
/* [RW 16] classes are low-priority for port0 */
#define NIG_REG_LLFC_LOW_PRIORITY_CLASSES_0 0x16060
#define NIG_REG_LLFC_LOW_PRIORITY_CLASSES_1 0x16064
/* [RW 1] Output enable of message to LLFC BMAC IF for port0 */
#define NIG_REG_LLFC_OUT_EN_0 0x160c8
#define NIG_REG_LLFC_OUT_EN_1 0x160cc
#define NIG_REG_LLH0_ACPI_PAT_0_CRC 0x1015c
#define NIG_REG_LLH0_ACPI_PAT_6_LEN 0x10154
#define NIG_REG_LLH0_BRB1_DRV_MASK 0x10244
@ -1912,11 +1918,17 @@
~safc_enable.safc_enable = 0 and ppp_enable.ppp_enable =0 for the same
port */
#define NIG_REG_PAUSE_ENABLE_0 0x160c0
#define NIG_REG_PAUSE_ENABLE_1 0x160c4
/* [RW 1] Input enable for RX PBF LP IF */
#define NIG_REG_PBF_LB_IN_EN 0x100b4
/* [RW 1] Value of this register will be transmitted to port swap when
~nig_registers_strap_override.strap_override =1 */
#define NIG_REG_PORT_SWAP 0x10394
/* [RW 1] PPP enable for port0. This register may get 1 only when
* ~safc_enable.safc_enable = 0 and pause_enable.pause_enable =0 for the
* same port */
#define NIG_REG_PPP_ENABLE_0 0x160b0
#define NIG_REG_PPP_ENABLE_1 0x160b4
/* [RW 1] output enable for RX parser descriptor IF */
#define NIG_REG_PRS_EOP_OUT_EN 0x10104
/* [RW 1] Input enable for RX parser request IF */
@ -1983,6 +1995,14 @@
#define NIG_STATUS_INTERRUPT_PORT0_REG_STATUS_XGXS0_LINK10G (0x1<<15)
#define NIG_STATUS_INTERRUPT_PORT0_REG_STATUS_XGXS0_LINK_STATUS (0xf<<18)
#define NIG_STATUS_INTERRUPT_PORT0_REG_STATUS_XGXS0_LINK_STATUS_SIZE 18
/* [RW 31] The upper bound of the weight of COS0 in the ETS command arbiter. */
#define PBF_REG_COS0_UPPER_BOUND 0x15c05c
/* [RW 31] The weight of COS0 in the ETS command arbiter. */
#define PBF_REG_COS0_WEIGHT 0x15c054
/* [RW 31] The upper bound of the weight of COS1 in the ETS command arbiter. */
#define PBF_REG_COS1_UPPER_BOUND 0x15c060
/* [RW 31] The weight of COS1 in the ETS command arbiter. */
#define PBF_REG_COS1_WEIGHT 0x15c058
/* [RW 1] Disable processing further tasks from port 0 (after ending the
current task in process). */
#define PBF_REG_DISABLE_NEW_TASK_PROC_P0 0x14005c
@ -1993,9 +2013,16 @@
current task in process). */
#define PBF_REG_DISABLE_NEW_TASK_PROC_P4 0x14006c
#define PBF_REG_DISABLE_PF 0x1402e8
/* [RW 1] Indicates that ETS is performed between the COSes in the command
* arbiter. If reset strict priority w/ anti-starvation will be performed
* w/o WFQ. */
#define PBF_REG_ETS_ENABLED 0x15c050
/* [RW 6] Bit-map indicating which L2 hdrs may appear after the basic
* Ethernet header. */
#define PBF_REG_HDRS_AFTER_BASIC 0x15c0a8
/* [RW 1] Indicates which COS is conncted to the highest priority in the
* command arbiter. */
#define PBF_REG_HIGH_PRIORITY_COS_NUM 0x15c04c
#define PBF_REG_IF_ENABLE_REG 0x140044
/* [RW 1] Init bit. When set the initial credits are copied to the credit
registers (except the port credits). Should be set and then reset after
@ -2021,6 +2048,10 @@
#define PBF_REG_MAC_LB_ENABLE 0x140040
/* [RW 6] Bit-map indicating which headers must appear in the packet */
#define PBF_REG_MUST_HAVE_HDRS 0x15c0c4
/* [RW 16] The number of strict priority arbitration slots between 2 RR
* arbitration slots. A value of 0 means no strict priority cycles; i.e. the
* strict-priority w/ anti-starvation arbiter is a RR arbiter. */
#define PBF_REG_NUM_STRICT_ARB_SLOTS 0x15c064
/* [RW 10] Port 0 threshold used by arbiter in 16 byte lines used when pause
not suppoterd. */
#define PBF_REG_P0_ARB_THRSH 0x1400e4
@ -4975,7 +5006,23 @@
#define EMAC_REG_EMAC_TX_MODE 0xbc
#define EMAC_REG_EMAC_TX_STAT_AC 0x280
#define EMAC_REG_EMAC_TX_STAT_AC_COUNT 22
#define EMAC_REG_RX_PFC_MODE 0x320
#define EMAC_REG_RX_PFC_MODE_PRIORITIES (1L<<2)
#define EMAC_REG_RX_PFC_MODE_RX_EN (1L<<1)
#define EMAC_REG_RX_PFC_MODE_TX_EN (1L<<0)
#define EMAC_REG_RX_PFC_PARAM 0x324
#define EMAC_REG_RX_PFC_PARAM_OPCODE_BITSHIFT 0
#define EMAC_REG_RX_PFC_PARAM_PRIORITY_EN_BITSHIFT 16
#define EMAC_REG_RX_PFC_STATS_XOFF_RCVD 0x328
#define EMAC_REG_RX_PFC_STATS_XOFF_RCVD_COUNT (0xffff<<0)
#define EMAC_REG_RX_PFC_STATS_XOFF_SENT 0x330
#define EMAC_REG_RX_PFC_STATS_XOFF_SENT_COUNT (0xffff<<0)
#define EMAC_REG_RX_PFC_STATS_XON_RCVD 0x32c
#define EMAC_REG_RX_PFC_STATS_XON_RCVD_COUNT (0xffff<<0)
#define EMAC_REG_RX_PFC_STATS_XON_SENT 0x334
#define EMAC_REG_RX_PFC_STATS_XON_SENT_COUNT (0xffff<<0)
#define EMAC_RX_MODE_FLOW_EN (1L<<2)
#define EMAC_RX_MODE_KEEP_MAC_CONTROL (1L<<3)
#define EMAC_RX_MODE_KEEP_VLAN_TAG (1L<<10)
#define EMAC_RX_MODE_PROMISCUOUS (1L<<8)
#define EMAC_RX_MODE_RESET (1L<<0)