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path: root/drivers/net/ethernet/mscc/ocelot.c
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Diffstat (limited to 'drivers/net/ethernet/mscc/ocelot.c')
-rw-r--r--drivers/net/ethernet/mscc/ocelot.c123
1 files changed, 86 insertions, 37 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index d3b7373c5961..b4731df186f4 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -442,8 +442,23 @@ void ocelot_adjust_link(struct ocelot *ocelot, int port,
ocelot_port_writel(ocelot_port, DEV_MAC_MODE_CFG_FDX_ENA |
mode, DEV_MAC_MODE_CFG);
- if (ocelot->ops->pcs_init)
- ocelot->ops->pcs_init(ocelot, port);
+ /* Disable HDX fast control */
+ ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
+ DEV_PORT_MISC);
+
+ /* SGMII only for now */
+ ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
+ PCS1G_MODE_CFG);
+ ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
+
+ /* Enable PCS */
+ ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
+
+ /* No aneg on SGMII */
+ ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
+
+ /* No loopback */
+ ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
/* Enable MAC module */
ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA |
@@ -1398,7 +1413,7 @@ void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state)
* a source for the other ports.
*/
for (p = 0; p < ocelot->num_phys_ports; p++) {
- if (p == ocelot->cpu || (ocelot->bridge_fwd_mask & BIT(p))) {
+ if (ocelot->bridge_fwd_mask & BIT(p)) {
unsigned long mask = ocelot->bridge_fwd_mask & ~BIT(p);
for (i = 0; i < ocelot->num_phys_ports; i++) {
@@ -1413,18 +1428,10 @@ void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state)
}
}
- /* Avoid the NPI port from looping back to itself */
- if (p != ocelot->cpu)
- mask |= BIT(ocelot->cpu);
-
ocelot_write_rix(ocelot, mask,
ANA_PGID_PGID, PGID_SRC + p);
} else {
- /* Only the CPU port, this is compatible with link
- * aggregation.
- */
- ocelot_write_rix(ocelot,
- BIT(ocelot->cpu),
+ ocelot_write_rix(ocelot, 0,
ANA_PGID_PGID, PGID_SRC + p);
}
}
@@ -2178,13 +2185,25 @@ static int ocelot_init_timestamp(struct ocelot *ocelot)
/* Configure the maximum SDU (L2 payload) on RX to the value specified in @sdu.
* The length of VLAN tags is accounted for automatically via DEV_MAC_TAGS_CFG.
+ * In the special case that it's the NPI port that we're configuring, the
+ * length of the tag and optional prefix needs to be accounted for privately,
+ * in order to be able to sustain communication at the requested @sdu.
*/
-static void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu)
+void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN;
int atop_wm;
+ if (port == ocelot->npi) {
+ maxlen += OCELOT_TAG_LEN;
+
+ if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_SHORT)
+ maxlen += OCELOT_SHORT_PREFIX_LEN;
+ else if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_LONG)
+ maxlen += OCELOT_LONG_PREFIX_LEN;
+ }
+
ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG);
/* Set Pause WM hysteresis
@@ -2202,6 +2221,24 @@ static void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu)
SYS_ATOP, port);
ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
}
+EXPORT_SYMBOL(ocelot_port_set_maxlen);
+
+int ocelot_get_max_mtu(struct ocelot *ocelot, int port)
+{
+ int max_mtu = 65535 - ETH_HLEN - ETH_FCS_LEN;
+
+ if (port == ocelot->npi) {
+ max_mtu -= OCELOT_TAG_LEN;
+
+ if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_SHORT)
+ max_mtu -= OCELOT_SHORT_PREFIX_LEN;
+ else if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_LONG)
+ max_mtu -= OCELOT_LONG_PREFIX_LEN;
+ }
+
+ return max_mtu;
+}
+EXPORT_SYMBOL(ocelot_get_max_mtu);
void ocelot_init_port(struct ocelot *ocelot, int port)
{
@@ -2299,42 +2336,57 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port,
}
EXPORT_SYMBOL(ocelot_probe_port);
-void ocelot_set_cpu_port(struct ocelot *ocelot, int cpu,
- enum ocelot_tag_prefix injection,
- enum ocelot_tag_prefix extraction)
+/* Configure and enable the CPU port module, which is a set of queues.
+ * If @npi contains a valid port index, the CPU port module is connected
+ * to the Node Processor Interface (NPI). This is the mode through which
+ * frames can be injected from and extracted to an external CPU,
+ * over Ethernet.
+ */
+void ocelot_configure_cpu(struct ocelot *ocelot, int npi,
+ enum ocelot_tag_prefix injection,
+ enum ocelot_tag_prefix extraction)
{
- /* Configure and enable the CPU port. */
+ int cpu = ocelot->num_phys_ports;
+
+ ocelot->npi = npi;
+ ocelot->inj_prefix = injection;
+ ocelot->xtr_prefix = extraction;
+
+ /* The unicast destination PGID for the CPU port module is unused */
ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu);
+ /* Instead set up a multicast destination PGID for traffic copied to
+ * the CPU. Whitelisted MAC addresses like the port netdevice MAC
+ * addresses will be copied to the CPU via this PGID.
+ */
ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU);
ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA |
ANA_PORT_PORT_CFG_PORTID_VAL(cpu),
ANA_PORT_PORT_CFG, cpu);
- /* If the CPU port is a physical port, set up the port in Node
- * Processor Interface (NPI) mode. This is the mode through which
- * frames can be injected from and extracted to an external CPU.
- * Only one port can be an NPI at the same time.
- */
- if (cpu < ocelot->num_phys_ports) {
- int sdu = ETH_DATA_LEN + OCELOT_TAG_LEN;
-
+ if (npi >= 0 && npi < ocelot->num_phys_ports) {
ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M |
- QSYS_EXT_CPU_CFG_EXT_CPU_PORT(cpu),
+ QSYS_EXT_CPU_CFG_EXT_CPU_PORT(npi),
QSYS_EXT_CPU_CFG);
- if (injection == OCELOT_TAG_PREFIX_SHORT)
- sdu += OCELOT_SHORT_PREFIX_LEN;
- else if (injection == OCELOT_TAG_PREFIX_LONG)
- sdu += OCELOT_LONG_PREFIX_LEN;
-
- ocelot_port_set_maxlen(ocelot, cpu, sdu);
+ /* Enable NPI port */
+ ocelot_write_rix(ocelot,
+ QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
+ QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
+ QSYS_SWITCH_PORT_MODE_PORT_ENA,
+ QSYS_SWITCH_PORT_MODE, npi);
+ /* NPI port Injection/Extraction configuration */
+ ocelot_write_rix(ocelot,
+ SYS_PORT_MODE_INCL_XTR_HDR(extraction) |
+ SYS_PORT_MODE_INCL_INJ_HDR(injection),
+ SYS_PORT_MODE, npi);
}
- /* CPU port Injection/Extraction configuration */
+ /* Enable CPU port module */
ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
QSYS_SWITCH_PORT_MODE_PORT_ENA,
QSYS_SWITCH_PORT_MODE, cpu);
+ /* CPU port Injection/Extraction configuration */
ocelot_write_rix(ocelot, SYS_PORT_MODE_INCL_XTR_HDR(extraction) |
SYS_PORT_MODE_INCL_INJ_HDR(injection),
SYS_PORT_MODE, cpu);
@@ -2344,10 +2396,8 @@ void ocelot_set_cpu_port(struct ocelot *ocelot, int cpu,
ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1),
ANA_PORT_VLAN_CFG, cpu);
-
- ocelot->cpu = cpu;
}
-EXPORT_SYMBOL(ocelot_set_cpu_port);
+EXPORT_SYMBOL(ocelot_configure_cpu);
int ocelot_init(struct ocelot *ocelot)
{
@@ -2499,7 +2549,6 @@ void ocelot_deinit(struct ocelot *ocelot)
cancel_delayed_work(&ocelot->stats_work);
destroy_workqueue(ocelot->stats_queue);
mutex_destroy(&ocelot->stats_lock);
- ocelot_ace_deinit();
if (ocelot->ptp_clock)
ptp_clock_unregister(ocelot->ptp_clock);
generated by cgit (git 2.34.1) at 2024-05-03 17:51:12 +0000