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path: root/sys/dev/cxgb/common/cxgb_xgmac.c
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Diffstat (limited to 'sys/dev/cxgb/common/cxgb_xgmac.c')
-rw-r--r--sys/dev/cxgb/common/cxgb_xgmac.c143
1 files changed, 115 insertions, 28 deletions
diff --git a/sys/dev/cxgb/common/cxgb_xgmac.c b/sys/dev/cxgb/common/cxgb_xgmac.c
index ca8801f602a81..745cc4b4dd5e2 100644
--- a/sys/dev/cxgb/common/cxgb_xgmac.c
+++ b/sys/dev/cxgb/common/cxgb_xgmac.c
@@ -75,6 +75,12 @@ static void xaui_serdes_reset(struct cmac *mac)
}
}
+/**
+ * t3b_pcs_reset - reset the PCS on T3B+ adapters
+ * @mac: the XGMAC handle
+ *
+ * Reset the XGMAC PCS block on T3B+ adapters.
+ */
void t3b_pcs_reset(struct cmac *mac)
{
t3_set_reg_field(mac->adapter, A_XGM_RESET_CTRL + mac->offset,
@@ -84,6 +90,12 @@ void t3b_pcs_reset(struct cmac *mac)
F_PCS_RESET_);
}
+/**
+ * t3_mac_reset - reset a MAC
+ * @mac: the MAC to reset
+ *
+ * Reset the given MAC.
+ */
int t3_mac_reset(struct cmac *mac)
{
static struct addr_val_pair mac_reset_avp[] = {
@@ -114,6 +126,7 @@ int t3_mac_reset(struct cmac *mac)
t3_set_reg_field(adap, A_XGM_RXFIFO_CFG + oft,
F_RXSTRFRWRD | F_DISERRFRAMES,
uses_xaui(adap) ? 0 : F_RXSTRFRWRD);
+ t3_set_reg_field(adap, A_XGM_TXFIFO_CFG + oft, 0, F_UNDERUNFIX);
if (uses_xaui(adap)) {
if (adap->params.rev == 0) {
@@ -146,8 +159,10 @@ int t3_mac_reset(struct cmac *mac)
t3_write_reg(adap, A_XGM_TX_CTRL + oft, F_TXEN);
t3_write_reg(adap, A_XGM_RX_CTRL + oft, F_RXEN);
}
-
- val = F_MAC_RESET_;
+ t3_set_reg_field(adap, A_XGM_RX_MAX_PKT_SIZE + oft,
+ V_RXMAXFRAMERSIZE(M_RXMAXFRAMERSIZE),
+ V_RXMAXFRAMERSIZE(MAX_FRAME_SIZE) | F_RXENFRAMER);
+ val = F_MAC_RESET_ | F_XGMAC_STOP_EN;
if (is_10G(adap) || mac->multiport)
val |= F_PCS_RESET_;
else if (uses_xaui(adap))
@@ -236,7 +251,14 @@ static void set_addr_filter(struct cmac *mac, int idx, const u8 *addr)
t3_write_reg(mac->adapter, A_XGM_RX_EXACT_MATCH_HIGH_1 + oft, addr_hi);
}
-/* Set one of the station's unicast MAC addresses. */
+/**
+ * t3_mac_set_address - set one of the station's unicast MAC addresses
+ * @mac: the MAC handle
+ * @idx: index of the exact address match filter to use
+ * @addr: the Ethernet address
+ *
+ * Set one of the station's unicast MAC addresses.
+ */
int t3_mac_set_address(struct cmac *mac, unsigned int idx, u8 addr[6])
{
if (mac->multiport)
@@ -249,10 +271,14 @@ int t3_mac_set_address(struct cmac *mac, unsigned int idx, u8 addr[6])
return 0;
}
-/*
- * Specify the number of exact address filters that should be reserved for
- * unicast addresses. Caller should reload the unicast and multicast addresses
- * after calling this.
+/**
+ * t3_mac_set_num_ucast - set the number of unicast addresses needed
+ * @mac: the MAC handle
+ * @n: number of unicast addresses needed
+ *
+ * Specify the number of exact address filters that should be reserved for
+ * unicast addresses. Caller should reload the unicast and multicast
+ * addresses after calling this.
*/
int t3_mac_set_num_ucast(struct cmac *mac, unsigned char n)
{
@@ -298,6 +324,14 @@ static int hash_hw_addr(const u8 *addr)
return hash;
}
+/**
+ * t3_mac_set_rx_mode - set the Rx mode and address filters
+ * @mac: the MAC to configure
+ * @rm: structure containing the Rx mode and MAC addresses needed
+ *
+ * Configures the MAC Rx mode (promiscuity, etc) and exact and hash
+ * address filters.
+ */
int t3_mac_set_rx_mode(struct cmac *mac, struct t3_rx_mode *rm)
{
u32 hash_lo, hash_hi;
@@ -344,10 +378,18 @@ static int rx_fifo_hwm(int mtu)
return min(hwm, MAC_RXFIFO_SIZE - 8192);
}
+/**
+ * t3_mac_set_mtu - set the MAC MTU
+ * @mac: the MAC to configure
+ * @mtu: the MTU
+ *
+ * Sets the MAC MTU and adjusts the FIFO PAUSE watermarks accordingly.
+ */
int t3_mac_set_mtu(struct cmac *mac, unsigned int mtu)
{
- int hwm, lwm;
- unsigned int thres, v;
+ int hwm, lwm, divisor;
+ int ipg;
+ unsigned int thres, v, reg;
adapter_t *adap = mac->adapter;
/*
@@ -362,27 +404,33 @@ int t3_mac_set_mtu(struct cmac *mac, unsigned int mtu)
if (mac->multiport)
return t3_vsc7323_set_mtu(adap, mtu - 4, mac->ext_port);
- if (adap->params.rev == T3_REV_B2 &&
+ if (adap->params.rev >= T3_REV_B2 &&
(t3_read_reg(adap, A_XGM_RX_CTRL + mac->offset) & F_RXEN)) {
disable_exact_filters(mac);
v = t3_read_reg(adap, A_XGM_RX_CFG + mac->offset);
t3_set_reg_field(adap, A_XGM_RX_CFG + mac->offset,
F_ENHASHMCAST | F_COPYALLFRAMES, F_DISBCAST);
- /* drain rx FIFO */
- if (t3_wait_op_done(adap,
- A_XGM_RX_MAX_PKT_SIZE_ERR_CNT + mac->offset,
- 1 << 31, 1, 20, 5)) {
+ reg = adap->params.rev == T3_REV_B2 ?
+ A_XGM_RX_MAX_PKT_SIZE_ERR_CNT : A_XGM_RXFIFO_CFG;
+
+ /* drain RX FIFO */
+ if (t3_wait_op_done(adap, reg + mac->offset,
+ F_RXFIFO_EMPTY, 1, 20, 5)) {
t3_write_reg(adap, A_XGM_RX_CFG + mac->offset, v);
enable_exact_filters(mac);
return -EIO;
}
- t3_write_reg(adap, A_XGM_RX_MAX_PKT_SIZE + mac->offset, mtu);
+ t3_set_reg_field(adap, A_XGM_RX_MAX_PKT_SIZE + mac->offset,
+ V_RXMAXPKTSIZE(M_RXMAXPKTSIZE),
+ V_RXMAXPKTSIZE(mtu));
t3_write_reg(adap, A_XGM_RX_CFG + mac->offset, v);
enable_exact_filters(mac);
} else
- t3_write_reg(adap, A_XGM_RX_MAX_PKT_SIZE + mac->offset, mtu);
-
+ t3_set_reg_field(adap, A_XGM_RX_MAX_PKT_SIZE + mac->offset,
+ V_RXMAXPKTSIZE(M_RXMAXPKTSIZE),
+ V_RXMAXPKTSIZE(mtu));
+
/*
* Adjust the PAUSE frame watermarks. We always set the LWM, and the
* HWM only if flow-control is enabled.
@@ -405,20 +453,34 @@ int t3_mac_set_mtu(struct cmac *mac, unsigned int mtu)
thres /= 10;
thres = mtu > thres ? (mtu - thres + 7) / 8 : 0;
thres = max(thres, 8U); /* need at least 8 */
+ ipg = (adap->params.rev == T3_REV_C) ? 0 : 1;
t3_set_reg_field(adap, A_XGM_TXFIFO_CFG + mac->offset,
V_TXFIFOTHRESH(M_TXFIFOTHRESH) | V_TXIPG(M_TXIPG),
- V_TXFIFOTHRESH(thres) | V_TXIPG(1));
+ V_TXFIFOTHRESH(thres) | V_TXIPG(ipg));
/* Assuming a minimum drain rate of 2.5Gbps...
*/
- if (adap->params.rev > 0)
+ if (adap->params.rev > 0) {
+ divisor = (adap->params.rev == T3_REV_C) ? 64 : 8;
t3_write_reg(adap, A_XGM_PAUSE_TIMER + mac->offset,
- (hwm - lwm) * 4 / 8);
+ (hwm - lwm) * 4 / divisor);
+ }
t3_write_reg(adap, A_XGM_TX_PAUSE_QUANTA + mac->offset,
MAC_RXFIFO_SIZE * 4 * 8 / 512);
return 0;
}
+/**
+ * t3_mac_set_speed_duplex_fc - set MAC speed, duplex and flow control
+ * @mac: the MAC to configure
+ * @speed: the desired speed (10/100/1000/10000)
+ * @duplex: the desired duplex
+ * @fc: desired Tx/Rx PAUSE configuration
+ *
+ * Set the MAC speed, duplex (actually only full-duplex is supported), and
+ * flow control. If a parameter value is negative the corresponding
+ * MAC setting is left at its current value.
+ */
int t3_mac_set_speed_duplex_fc(struct cmac *mac, int speed, int duplex, int fc)
{
u32 val;
@@ -466,6 +528,15 @@ int t3_mac_set_speed_duplex_fc(struct cmac *mac, int speed, int duplex, int fc)
return 0;
}
+/**
+ * t3_mac_enable - enable the MAC in the given directions
+ * @mac: the MAC to configure
+ * @which: bitmap indicating which directions to enable
+ *
+ * Enables the MAC for operation in the given directions.
+ * %MAC_DIRECTION_TX enables the Tx direction, and %MAC_DIRECTION_RX
+ * enables the Rx one.
+ */
int t3_mac_enable(struct cmac *mac, int which)
{
int idx = macidx(mac);
@@ -478,9 +549,13 @@ int t3_mac_enable(struct cmac *mac, int which)
if (which & MAC_DIRECTION_TX) {
t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_CFG_CH0 + idx);
- t3_write_reg(adap, A_TP_PIO_DATA, 0xc0ede401);
+ t3_write_reg(adap, A_TP_PIO_DATA,
+ adap->params.rev == T3_REV_C ?
+ 0xc4ffff01 : 0xc0ede401);
t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_MODE);
- t3_set_reg_field(adap, A_TP_PIO_DATA, 1 << idx, 1 << idx);
+ t3_set_reg_field(adap, A_TP_PIO_DATA, 1 << idx,
+ adap->params.rev == T3_REV_C ?
+ 0 : 1 << idx);
t3_write_reg(adap, A_XGM_TX_CTRL + oft, F_TXEN);
@@ -505,6 +580,15 @@ int t3_mac_enable(struct cmac *mac, int which)
return 0;
}
+/**
+ * t3_mac_disable - disable the MAC in the given directions
+ * @mac: the MAC to configure
+ * @which: bitmap indicating which directions to disable
+ *
+ * Disables the MAC in the given directions.
+ * %MAC_DIRECTION_TX disables the Tx direction, and %MAC_DIRECTION_RX
+ * disables the Rx one.
+ */
int t3_mac_disable(struct cmac *mac, int which)
{
adapter_t *adap = mac->adapter;
@@ -621,12 +705,15 @@ out:
return status;
}
-/*
- * This function is called periodically to accumulate the current values of the
- * RMON counters into the port statistics. Since the packet counters are only
- * 32 bits they can overflow in ~286 secs at 10G, so the function should be
- * called more frequently than that. The byte counters are 45-bit wide, they
- * would overflow in ~7.8 hours.
+/**
+ * t3_mac_update_stats - accumulate MAC statistics
+ * @mac: the MAC handle
+ *
+ * This function is called periodically to accumulate the current values
+ * of the RMON counters into the port statistics. Since the packet
+ * counters are only 32 bits they can overflow in ~286 secs at 10G, so the
+ * function should be called more frequently than that. The byte counters
+ * are 45-bit wide, they would overflow in ~7.8 hours.
*/
const struct mac_stats *t3_mac_update_stats(struct cmac *mac)
{
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-02 16:56:22 +0000