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path: root/drivers/net/cxgb3/t3_hw.c
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Diffstat (limited to 'drivers/net/cxgb3/t3_hw.c')
-rw-r--r--drivers/net/cxgb3/t3_hw.c244
1 files changed, 216 insertions, 28 deletions
diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c
index ac2a974dfe37..31ed31a3428b 100644
--- a/drivers/net/cxgb3/t3_hw.c
+++ b/drivers/net/cxgb3/t3_hw.c
@@ -493,20 +493,20 @@ int t3_phy_lasi_intr_handler(struct cphy *phy)
}
static const struct adapter_info t3_adap_info[] = {
- {2, 0,
+ {1, 1, 0,
F_GPIO2_OEN | F_GPIO4_OEN |
F_GPIO2_OUT_VAL | F_GPIO4_OUT_VAL, { S_GPIO3, S_GPIO5 }, 0,
&mi1_mdio_ops, "Chelsio PE9000"},
- {2, 0,
+ {1, 1, 0,
F_GPIO2_OEN | F_GPIO4_OEN |
F_GPIO2_OUT_VAL | F_GPIO4_OUT_VAL, { S_GPIO3, S_GPIO5 }, 0,
&mi1_mdio_ops, "Chelsio T302"},
- {1, 0,
+ {1, 0, 0,
F_GPIO1_OEN | F_GPIO6_OEN | F_GPIO7_OEN | F_GPIO10_OEN |
F_GPIO11_OEN | F_GPIO1_OUT_VAL | F_GPIO6_OUT_VAL | F_GPIO10_OUT_VAL,
{ 0 }, SUPPORTED_10000baseT_Full | SUPPORTED_AUI,
&mi1_mdio_ext_ops, "Chelsio T310"},
- {2, 0,
+ {1, 1, 0,
F_GPIO1_OEN | F_GPIO2_OEN | F_GPIO4_OEN | F_GPIO5_OEN | F_GPIO6_OEN |
F_GPIO7_OEN | F_GPIO10_OEN | F_GPIO11_OEN | F_GPIO1_OUT_VAL |
F_GPIO5_OUT_VAL | F_GPIO6_OUT_VAL | F_GPIO10_OUT_VAL,
@@ -514,7 +514,7 @@ static const struct adapter_info t3_adap_info[] = {
&mi1_mdio_ext_ops, "Chelsio T320"},
{},
{},
- {1, 0,
+ {1, 0, 0,
F_GPIO1_OEN | F_GPIO2_OEN | F_GPIO4_OEN | F_GPIO6_OEN | F_GPIO7_OEN |
F_GPIO10_OEN | F_GPIO1_OUT_VAL | F_GPIO6_OUT_VAL | F_GPIO10_OUT_VAL,
{ S_GPIO9 }, SUPPORTED_10000baseT_Full | SUPPORTED_AUI,
@@ -1153,6 +1153,38 @@ int t3_cim_ctl_blk_read(struct adapter *adap, unsigned int addr,
return ret;
}
+static void t3_gate_rx_traffic(struct cmac *mac, u32 *rx_cfg,
+ u32 *rx_hash_high, u32 *rx_hash_low)
+{
+ /* stop Rx unicast traffic */
+ t3_mac_disable_exact_filters(mac);
+
+ /* stop broadcast, multicast, promiscuous mode traffic */
+ *rx_cfg = t3_read_reg(mac->adapter, A_XGM_RX_CFG);
+ t3_set_reg_field(mac->adapter, A_XGM_RX_CFG,
+ F_ENHASHMCAST | F_DISBCAST | F_COPYALLFRAMES,
+ F_DISBCAST);
+
+ *rx_hash_high = t3_read_reg(mac->adapter, A_XGM_RX_HASH_HIGH);
+ t3_write_reg(mac->adapter, A_XGM_RX_HASH_HIGH, 0);
+
+ *rx_hash_low = t3_read_reg(mac->adapter, A_XGM_RX_HASH_LOW);
+ t3_write_reg(mac->adapter, A_XGM_RX_HASH_LOW, 0);
+
+ /* Leave time to drain max RX fifo */
+ msleep(1);
+}
+
+static void t3_open_rx_traffic(struct cmac *mac, u32 rx_cfg,
+ u32 rx_hash_high, u32 rx_hash_low)
+{
+ t3_mac_enable_exact_filters(mac);
+ t3_set_reg_field(mac->adapter, A_XGM_RX_CFG,
+ F_ENHASHMCAST | F_DISBCAST | F_COPYALLFRAMES,
+ rx_cfg);
+ t3_write_reg(mac->adapter, A_XGM_RX_HASH_HIGH, rx_hash_high);
+ t3_write_reg(mac->adapter, A_XGM_RX_HASH_LOW, rx_hash_low);
+}
/**
* t3_link_changed - handle interface link changes
@@ -1170,9 +1202,32 @@ void t3_link_changed(struct adapter *adapter, int port_id)
struct cphy *phy = &pi->phy;
struct cmac *mac = &pi->mac;
struct link_config *lc = &pi->link_config;
+ int force_link_down = 0;
phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc);
+ if (!lc->link_ok && link_ok) {
+ u32 rx_cfg, rx_hash_high, rx_hash_low;
+ u32 status;
+
+ t3_xgm_intr_enable(adapter, port_id);
+ t3_gate_rx_traffic(mac, &rx_cfg, &rx_hash_high, &rx_hash_low);
+ t3_write_reg(adapter, A_XGM_RX_CTRL + mac->offset, 0);
+ t3_mac_enable(mac, MAC_DIRECTION_RX);
+
+ status = t3_read_reg(adapter, A_XGM_INT_STATUS + mac->offset);
+ if (status & F_LINKFAULTCHANGE) {
+ mac->stats.link_faults++;
+ force_link_down = 1;
+ }
+ t3_open_rx_traffic(mac, rx_cfg, rx_hash_high, rx_hash_low);
+
+ if (force_link_down) {
+ t3_os_link_fault_handler(adapter, port_id);
+ return;
+ }
+ }
+
if (lc->requested_fc & PAUSE_AUTONEG)
fc &= lc->requested_fc;
else
@@ -1202,6 +1257,57 @@ void t3_link_changed(struct adapter *adapter, int port_id)
t3_os_link_changed(adapter, port_id, link_ok, speed, duplex, fc);
}
+void t3_link_fault(struct adapter *adapter, int port_id)
+{
+ struct port_info *pi = adap2pinfo(adapter, port_id);
+ struct cmac *mac = &pi->mac;
+ struct cphy *phy = &pi->phy;
+ struct link_config *lc = &pi->link_config;
+ int link_ok, speed, duplex, fc, link_fault;
+ u32 rx_cfg, rx_hash_high, rx_hash_low;
+
+ t3_gate_rx_traffic(mac, &rx_cfg, &rx_hash_high, &rx_hash_low);
+
+ if (adapter->params.rev > 0 && uses_xaui(adapter))
+ t3_write_reg(adapter, A_XGM_XAUI_ACT_CTRL + mac->offset, 0);
+
+ t3_write_reg(adapter, A_XGM_RX_CTRL + mac->offset, 0);
+ t3_mac_enable(mac, MAC_DIRECTION_RX);
+
+ t3_open_rx_traffic(mac, rx_cfg, rx_hash_high, rx_hash_low);
+
+ link_fault = t3_read_reg(adapter,
+ A_XGM_INT_STATUS + mac->offset);
+ link_fault &= F_LINKFAULTCHANGE;
+
+ phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc);
+
+ if (link_fault) {
+ lc->link_ok = 0;
+ lc->speed = SPEED_INVALID;
+ lc->duplex = DUPLEX_INVALID;
+
+ t3_os_link_fault(adapter, port_id, 0);
+
+ /* Account link faults only when the phy reports a link up */
+ if (link_ok)
+ mac->stats.link_faults++;
+
+ msleep(1000);
+ t3_os_link_fault_handler(adapter, port_id);
+ } else {
+ if (link_ok)
+ t3_write_reg(adapter, A_XGM_XAUI_ACT_CTRL + mac->offset,
+ F_TXACTENABLE | F_RXEN);
+
+ pi->link_fault = 0;
+ lc->link_ok = (unsigned char)link_ok;
+ lc->speed = speed < 0 ? SPEED_INVALID : speed;
+ lc->duplex = duplex < 0 ? DUPLEX_INVALID : duplex;
+ t3_os_link_fault(adapter, port_id, link_ok);
+ }
+}
+
/**
* t3_link_start - apply link configuration to MAC/PHY
* @phy: the PHY to setup
@@ -1323,7 +1429,7 @@ static int t3_handle_intr_status(struct adapter *adapter, unsigned int reg,
#define MC7_INTR_MASK (F_AE | F_UE | F_CE | V_PE(M_PE))
#define XGM_INTR_MASK (V_TXFIFO_PRTY_ERR(M_TXFIFO_PRTY_ERR) | \
V_RXFIFO_PRTY_ERR(M_RXFIFO_PRTY_ERR) | \
- F_TXFIFO_UNDERRUN | F_RXFIFO_OVERFLOW)
+ F_TXFIFO_UNDERRUN)
#define PCIX_INTR_MASK (F_MSTDETPARERR | F_SIGTARABT | F_RCVTARABT | \
F_RCVMSTABT | F_SIGSYSERR | F_DETPARERR | \
F_SPLCMPDIS | F_UNXSPLCMP | F_RCVSPLCMPERR | \
@@ -1360,11 +1466,11 @@ static int t3_handle_intr_status(struct adapter *adapter, unsigned int reg,
V_TX1TPPARERRENB(M_TX1TPPARERRENB) | \
V_RXTPPARERRENB(M_RXTPPARERRENB) | \
V_MCAPARERRENB(M_MCAPARERRENB))
+#define XGM_EXTRA_INTR_MASK (F_LINKFAULTCHANGE)
#define PL_INTR_MASK (F_T3DBG | F_XGMAC0_0 | F_XGMAC0_1 | F_MC5A | F_PM1_TX | \
F_PM1_RX | F_ULP2_TX | F_ULP2_RX | F_TP1 | F_CIM | \
F_MC7_CM | F_MC7_PMTX | F_MC7_PMRX | F_SGE3 | F_PCIM0 | \
F_MPS0 | F_CPL_SWITCH)
-
/*
* Interrupt handler for the PCIX1 module.
*/
@@ -1695,7 +1801,14 @@ static void mc7_intr_handler(struct mc7 *mc7)
static int mac_intr_handler(struct adapter *adap, unsigned int idx)
{
struct cmac *mac = &adap2pinfo(adap, idx)->mac;
- u32 cause = t3_read_reg(adap, A_XGM_INT_CAUSE + mac->offset);
+ /*
+ * We mask out interrupt causes for which we're not taking interrupts.
+ * This allows us to use polling logic to monitor some of the other
+ * conditions when taking interrupts would impose too much load on the
+ * system.
+ */
+ u32 cause = t3_read_reg(adap, A_XGM_INT_CAUSE + mac->offset) &
+ ~F_RXFIFO_OVERFLOW;
if (cause & V_TXFIFO_PRTY_ERR(M_TXFIFO_PRTY_ERR)) {
mac->stats.tx_fifo_parity_err++;
@@ -1715,10 +1828,20 @@ static int mac_intr_handler(struct adapter *adap, unsigned int idx)
mac->stats.xaui_pcs_ctc_err++;
if (cause & F_XAUIPCSALIGNCHANGE)
mac->stats.xaui_pcs_align_change++;
+ if (cause & F_XGM_INT) {
+ t3_set_reg_field(adap,
+ A_XGM_INT_ENABLE + mac->offset,
+ F_XGM_INT, 0);
+ mac->stats.link_faults++;
+
+ t3_os_link_fault_handler(adap, idx);
+ }
t3_write_reg(adap, A_XGM_INT_CAUSE + mac->offset, cause);
+
if (cause & XGM_INTR_FATAL)
t3_fatal_err(adap);
+
return cause != 0;
}
@@ -1924,6 +2047,22 @@ void t3_intr_clear(struct adapter *adapter)
t3_read_reg(adapter, A_PL_INT_CAUSE0); /* flush */
}
+void t3_xgm_intr_enable(struct adapter *adapter, int idx)
+{
+ struct port_info *pi = adap2pinfo(adapter, idx);
+
+ t3_write_reg(adapter, A_XGM_XGM_INT_ENABLE + pi->mac.offset,
+ XGM_EXTRA_INTR_MASK);
+}
+
+void t3_xgm_intr_disable(struct adapter *adapter, int idx)
+{
+ struct port_info *pi = adap2pinfo(adapter, idx);
+
+ t3_write_reg(adapter, A_XGM_XGM_INT_DISABLE + pi->mac.offset,
+ 0x7ff);
+}
+
/**
* t3_port_intr_enable - enable port-specific interrupts
* @adapter: associated adapter
@@ -1989,16 +2128,40 @@ void t3_port_intr_clear(struct adapter *adapter, int idx)
static int t3_sge_write_context(struct adapter *adapter, unsigned int id,
unsigned int type)
{
- t3_write_reg(adapter, A_SG_CONTEXT_MASK0, 0xffffffff);
- t3_write_reg(adapter, A_SG_CONTEXT_MASK1, 0xffffffff);
- t3_write_reg(adapter, A_SG_CONTEXT_MASK2, 0xffffffff);
- t3_write_reg(adapter, A_SG_CONTEXT_MASK3, 0xffffffff);
+ if (type == F_RESPONSEQ) {
+ /*
+ * Can't write the Response Queue Context bits for
+ * Interrupt Armed or the Reserve bits after the chip
+ * has been initialized out of reset. Writing to these
+ * bits can confuse the hardware.
+ */
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK0, 0xffffffff);
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK1, 0xffffffff);
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK2, 0x17ffffff);
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK3, 0xffffffff);
+ } else {
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK0, 0xffffffff);
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK1, 0xffffffff);
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK2, 0xffffffff);
+ t3_write_reg(adapter, A_SG_CONTEXT_MASK3, 0xffffffff);
+ }
t3_write_reg(adapter, A_SG_CONTEXT_CMD,
V_CONTEXT_CMD_OPCODE(1) | type | V_CONTEXT(id));
return t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY,
0, SG_CONTEXT_CMD_ATTEMPTS, 1);
}
+/**
+ * clear_sge_ctxt - completely clear an SGE context
+ * @adapter: the adapter
+ * @id: the context id
+ * @type: the context type
+ *
+ * Completely clear an SGE context. Used predominantly at post-reset
+ * initialization. Note in particular that we don't skip writing to any
+ * "sensitive bits" in the contexts the way that t3_sge_write_context()
+ * does ...
+ */
static int clear_sge_ctxt(struct adapter *adap, unsigned int id,
unsigned int type)
{
@@ -2006,7 +2169,14 @@ static int clear_sge_ctxt(struct adapter *adap, unsigned int id,
t3_write_reg(adap, A_SG_CONTEXT_DATA1, 0);
t3_write_reg(adap, A_SG_CONTEXT_DATA2, 0);
t3_write_reg(adap, A_SG_CONTEXT_DATA3, 0);
- return t3_sge_write_context(adap, id, type);
+ t3_write_reg(adap, A_SG_CONTEXT_MASK0, 0xffffffff);
+ t3_write_reg(adap, A_SG_CONTEXT_MASK1, 0xffffffff);
+ t3_write_reg(adap, A_SG_CONTEXT_MASK2, 0xffffffff);
+ t3_write_reg(adap, A_SG_CONTEXT_MASK3, 0xffffffff);
+ t3_write_reg(adap, A_SG_CONTEXT_CMD,
+ V_CONTEXT_CMD_OPCODE(1) | type | V_CONTEXT(id));
+ return t3_wait_op_done(adap, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY,
+ 0, SG_CONTEXT_CMD_ATTEMPTS, 1);
}
/**
@@ -2590,10 +2760,10 @@ static void tp_config(struct adapter *adap, const struct tp_params *p)
F_TCPCHECKSUMOFFLOAD | V_IPTTL(64));
t3_write_reg(adap, A_TP_TCP_OPTIONS, V_MTUDEFAULT(576) |
F_MTUENABLE | V_WINDOWSCALEMODE(1) |
- V_TIMESTAMPSMODE(0) | V_SACKMODE(1) | V_SACKRX(1));
+ V_TIMESTAMPSMODE(1) | V_SACKMODE(1) | V_SACKRX(1));
t3_write_reg(adap, A_TP_DACK_CONFIG, V_AUTOSTATE3(1) |
V_AUTOSTATE2(1) | V_AUTOSTATE1(0) |
- V_BYTETHRESHOLD(16384) | V_MSSTHRESHOLD(2) |
+ V_BYTETHRESHOLD(26880) | V_MSSTHRESHOLD(2) |
F_AUTOCAREFUL | F_AUTOENABLE | V_DACK_MODE(1));
t3_set_reg_field(adap, A_TP_IN_CONFIG, F_RXFBARBPRIO | F_TXFBARBPRIO,
F_IPV6ENABLE | F_NICMODE);
@@ -3057,20 +3227,22 @@ int t3_mps_set_active_ports(struct adapter *adap, unsigned int port_mask)
}
/*
- * Perform the bits of HW initialization that are dependent on the number
- * of available ports.
+ * Perform the bits of HW initialization that are dependent on the Tx
+ * channels being used.
*/
-static void init_hw_for_avail_ports(struct adapter *adap, int nports)
+static void chan_init_hw(struct adapter *adap, unsigned int chan_map)
{
int i;
- if (nports == 1) {
+ if (chan_map != 3) { /* one channel */
t3_set_reg_field(adap, A_ULPRX_CTL, F_ROUND_ROBIN, 0);
t3_set_reg_field(adap, A_ULPTX_CONFIG, F_CFG_RR_ARB, 0);
- t3_write_reg(adap, A_MPS_CFG, F_TPRXPORTEN | F_TPTXPORT0EN |
- F_PORT0ACTIVE | F_ENFORCEPKT);
- t3_write_reg(adap, A_PM1_TX_CFG, 0xffffffff);
- } else {
+ t3_write_reg(adap, A_MPS_CFG, F_TPRXPORTEN | F_ENFORCEPKT |
+ (chan_map == 1 ? F_TPTXPORT0EN | F_PORT0ACTIVE :
+ F_TPTXPORT1EN | F_PORT1ACTIVE));
+ t3_write_reg(adap, A_PM1_TX_CFG,
+ chan_map == 1 ? 0xffffffff : 0);
+ } else { /* two channels */
t3_set_reg_field(adap, A_ULPRX_CTL, 0, F_ROUND_ROBIN);
t3_set_reg_field(adap, A_ULPTX_CONFIG, 0, F_CFG_RR_ARB);
t3_write_reg(adap, A_ULPTX_DMA_WEIGHT,
@@ -3378,7 +3550,7 @@ int t3_init_hw(struct adapter *adapter, u32 fw_params)
t3_write_reg(adapter, A_PM1_RX_CFG, 0xffffffff);
t3_write_reg(adapter, A_PM1_RX_MODE, 0);
t3_write_reg(adapter, A_PM1_TX_MODE, 0);
- init_hw_for_avail_ports(adapter, adapter->params.nports);
+ chan_init_hw(adapter, adapter->params.chan_map);
t3_sge_init(adapter, &adapter->params.sge);
t3_write_reg(adapter, A_T3DBG_GPIO_ACT_LOW, calc_gpio_intr(adapter));
@@ -3615,9 +3787,18 @@ int t3_prep_adapter(struct adapter *adapter, const struct adapter_info *ai,
get_pci_mode(adapter, &adapter->params.pci);
adapter->params.info = ai;
- adapter->params.nports = ai->nports;
+ adapter->params.nports = ai->nports0 + ai->nports1;
+ adapter->params.chan_map = !!ai->nports0 | (!!ai->nports1 << 1);
adapter->params.rev = t3_read_reg(adapter, A_PL_REV);
- adapter->params.linkpoll_period = 0;
+ /*
+ * We used to only run the "adapter check task" once a second if
+ * we had PHYs which didn't support interrupts (we would check
+ * their link status once a second). Now we check other conditions
+ * in that routine which could potentially impose a very high
+ * interrupt load on the system. As such, we now always scan the
+ * adapter state once a second ...
+ */
+ adapter->params.linkpoll_period = 10;
adapter->params.stats_update_period = is_10G(adapter) ?
MAC_STATS_ACCUM_SECS : (MAC_STATS_ACCUM_SECS * 10);
adapter->params.pci.vpd_cap_addr =
@@ -3638,7 +3819,7 @@ int t3_prep_adapter(struct adapter *adapter, const struct adapter_info *ai,
mc7_prep(adapter, &adapter->pmtx, MC7_PMTX_BASE_ADDR, "PMTX");
mc7_prep(adapter, &adapter->cm, MC7_CM_BASE_ADDR, "CM");
- p->nchan = ai->nports;
+ p->nchan = adapter->params.chan_map == 3 ? 2 : 1;
p->pmrx_size = t3_mc7_size(&adapter->pmrx);
p->pmtx_size = t3_mc7_size(&adapter->pmtx);
p->cm_size = t3_mc7_size(&adapter->cm);
@@ -3707,7 +3888,14 @@ int t3_prep_adapter(struct adapter *adapter, const struct adapter_info *ai,
ETH_ALEN);
init_link_config(&p->link_config, p->phy.caps);
p->phy.ops->power_down(&p->phy, 1);
- if (!(p->phy.caps & SUPPORTED_IRQ))
+
+ /*
+ * If the PHY doesn't support interrupts for link status
+ * changes, schedule a scan of the adapter links at least
+ * once a second.
+ */
+ if (!(p->phy.caps & SUPPORTED_IRQ) &&
+ adapter->params.linkpoll_period > 10)
adapter->params.linkpoll_period = 10;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-03 16:37:24 +0300