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path: root/drivers/net/dsa/microchip/ksz_common.c
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Diffstat (limited to 'drivers/net/dsa/microchip/ksz_common.c')
-rw-r--r--drivers/net/dsa/microchip/ksz_common.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 9d4dcbe2949b..46becc0382d6 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -23,6 +23,7 @@
#include <linux/of_net.h>
#include <linux/micrel_phy.h>
#include <net/dsa.h>
+#include <net/pkt_cls.h>
#include <net/switchdev.h>
#include "ksz_common.h"
@@ -31,6 +32,10 @@
#include "ksz9477.h"
#include "lan937x.h"
+#define KSZ_CBS_ENABLE ((MTI_SCHEDULE_STRICT_PRIO << MTI_SCHEDULE_MODE_S) | \
+ (MTI_SHAPING_SRP << MTI_SHAPING_S))
+#define KSZ_CBS_DISABLE ((MTI_SCHEDULE_WRR << MTI_SCHEDULE_MODE_S) |\
+ (MTI_SHAPING_OFF << MTI_SHAPING_S))
#define MIB_COUNTER_NUM 0x20
struct ksz_stats_raw {
@@ -250,6 +255,7 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
.change_mtu = ksz9477_change_mtu,
.phylink_mac_link_up = ksz9477_phylink_mac_link_up,
.config_cpu_port = ksz9477_config_cpu_port,
+ .tc_cbs_set_cinc = ksz9477_tc_cbs_set_cinc,
.enable_stp_addr = ksz9477_enable_stp_addr,
.reset = ksz9477_reset_switch,
.init = ksz9477_switch_init,
@@ -286,6 +292,7 @@ static const struct ksz_dev_ops lan937x_dev_ops = {
.change_mtu = lan937x_change_mtu,
.phylink_mac_link_up = ksz9477_phylink_mac_link_up,
.config_cpu_port = lan937x_config_cpu_port,
+ .tc_cbs_set_cinc = lan937x_tc_cbs_set_cinc,
.enable_stp_addr = ksz9477_enable_stp_addr,
.reset = lan937x_reset_switch,
.init = lan937x_switch_init,
@@ -1081,6 +1088,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 3, /* total port count */
.port_nirqs = 3,
.num_tx_queues = 4,
+ .tc_cbs_supported = true,
.ops = &ksz9477_dev_ops,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1219,6 +1227,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 7, /* total physical port count */
.port_nirqs = 4,
.num_tx_queues = 4,
+ .tc_cbs_supported = true,
.ops = &ksz9477_dev_ops,
.phy_errata_9477 = true,
.mib_names = ksz9477_mib_names,
@@ -1342,6 +1351,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 3, /* total port count */
.port_nirqs = 3,
.num_tx_queues = 4,
+ .tc_cbs_supported = true,
.ops = &ksz9477_dev_ops,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1368,6 +1378,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 7, /* total physical port count */
.port_nirqs = 3,
.num_tx_queues = 4,
+ .tc_cbs_supported = true,
.ops = &ksz9477_dev_ops,
.phy_errata_9477 = true,
.mib_names = ksz9477_mib_names,
@@ -1399,6 +1410,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 5, /* total physical port count */
.port_nirqs = 6,
.num_tx_queues = 8,
+ .tc_cbs_supported = true,
.ops = &lan937x_dev_ops,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1424,6 +1436,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 6, /* total physical port count */
.port_nirqs = 6,
.num_tx_queues = 8,
+ .tc_cbs_supported = true,
.ops = &lan937x_dev_ops,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1449,6 +1462,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 8, /* total physical port count */
.port_nirqs = 6,
.num_tx_queues = 8,
+ .tc_cbs_supported = true,
.ops = &lan937x_dev_ops,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1478,6 +1492,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 5, /* total physical port count */
.port_nirqs = 6,
.num_tx_queues = 8,
+ .tc_cbs_supported = true,
.ops = &lan937x_dev_ops,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1507,6 +1522,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 8, /* total physical port count */
.port_nirqs = 6,
.num_tx_queues = 8,
+ .tc_cbs_supported = true,
.ops = &lan937x_dev_ops,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -2976,6 +2992,101 @@ static int ksz_switch_detect(struct ksz_device *dev)
return 0;
}
+/* Bandwidth is calculated by idle slope/transmission speed. Then the Bandwidth
+ * is converted to Hex-decimal using the successive multiplication method. On
+ * every step, integer part is taken and decimal part is carry forwarded.
+ */
+static int cinc_cal(s32 idle_slope, s32 send_slope, u32 *bw)
+{
+ u32 cinc = 0;
+ u32 txrate;
+ u32 rate;
+ u8 temp;
+ u8 i;
+
+ txrate = idle_slope - send_slope;
+
+ if (!txrate)
+ return -EINVAL;
+
+ rate = idle_slope;
+
+ /* 24 bit register */
+ for (i = 0; i < 6; i++) {
+ rate = rate * 16;
+
+ temp = rate / txrate;
+
+ rate %= txrate;
+
+ cinc = ((cinc << 4) | temp);
+ }
+
+ *bw = cinc;
+
+ return 0;
+}
+
+static int ksz_setup_tc_cbs(struct dsa_switch *ds, int port,
+ struct tc_cbs_qopt_offload *qopt)
+{
+ struct ksz_device *dev = ds->priv;
+ int ret;
+ u32 bw;
+
+ if (!dev->info->tc_cbs_supported)
+ return -EOPNOTSUPP;
+
+ if (qopt->queue > dev->info->num_tx_queues)
+ return -EINVAL;
+
+ /* Queue Selection */
+ ret = ksz_pwrite32(dev, port, REG_PORT_MTI_QUEUE_INDEX__4, qopt->queue);
+ if (ret)
+ return ret;
+
+ if (!qopt->enable)
+ return ksz_pwrite8(dev, port, REG_PORT_MTI_QUEUE_CTRL_0,
+ KSZ_CBS_DISABLE);
+
+ /* High Credit */
+ ret = ksz_pwrite16(dev, port, REG_PORT_MTI_HI_WATER_MARK,
+ qopt->hicredit);
+ if (ret)
+ return ret;
+
+ /* Low Credit */
+ ret = ksz_pwrite16(dev, port, REG_PORT_MTI_LO_WATER_MARK,
+ qopt->locredit);
+ if (ret)
+ return ret;
+
+ /* Credit Increment Register */
+ ret = cinc_cal(qopt->idleslope, qopt->sendslope, &bw);
+ if (ret)
+ return ret;
+
+ if (dev->dev_ops->tc_cbs_set_cinc) {
+ ret = dev->dev_ops->tc_cbs_set_cinc(dev, port, bw);
+ if (ret)
+ return ret;
+ }
+
+ return ksz_pwrite8(dev, port, REG_PORT_MTI_QUEUE_CTRL_0,
+ KSZ_CBS_ENABLE);
+}
+
+static int ksz_setup_tc(struct dsa_switch *ds, int port,
+ enum tc_setup_type type, void *type_data)
+{
+ switch (type) {
+ case TC_SETUP_QDISC_CBS:
+ return ksz_setup_tc_cbs(ds, port, type_data);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
static const struct dsa_switch_ops ksz_switch_ops = {
.get_tag_protocol = ksz_get_tag_protocol,
.connect_tag_protocol = ksz_connect_tag_protocol,
@@ -3018,6 +3129,7 @@ static const struct dsa_switch_ops ksz_switch_ops = {
.port_hwtstamp_set = ksz_hwtstamp_set,
.port_txtstamp = ksz_port_txtstamp,
.port_rxtstamp = ksz_port_rxtstamp,
+ .port_setup_tc = ksz_setup_tc,
};
struct ksz_device *ksz_switch_alloc(struct device *base, void *priv)
generated by cgit (git 2.34.1) at 2024-05-28 17:58:10 +0000