#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
+#include <linux/rtnetlink.h>
#include <linux/mfd/syscon.h>
#include <linux/sys_soc.h>
#include <linux/dma/ti-cppi5.h>
NETIF_MSG_IFUP | NETIF_MSG_PROBE | NETIF_MSG_IFDOWN | \
NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
+static int am65_cpsw_nuss_init_tx_chns(struct am65_cpsw_common *common);
+static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common);
+static void am65_cpsw_nuss_free_tx_chns(struct am65_cpsw_common *common);
+static void am65_cpsw_nuss_free_rx_chns(struct am65_cpsw_common *common);
+
static void am65_cpsw_port_set_sl_mac(struct am65_cpsw_port *slave,
const u8 *dev_addr)
{
if (common->usage_count)
return 0;
+ /* init tx/rx channels */
+ ret = am65_cpsw_nuss_init_tx_chns(common);
+ if (ret) {
+ dev_err(common->dev, "init_tx_chns failed\n");
+ return ret;
+ }
+
+ ret = am65_cpsw_nuss_init_rx_chns(common);
+ if (ret) {
+ dev_err(common->dev, "init_rx_chns failed\n");
+ am65_cpsw_nuss_free_tx_chns(common);
+ return ret;
+ }
+
/* Control register */
writel(AM65_CPSW_CTL_P0_ENABLE | AM65_CPSW_CTL_P0_TX_CRC_REMOVE |
AM65_CPSW_CTL_VLAN_AWARE | AM65_CPSW_CTL_P0_RX_PAD,
/* disable priority elevation */
writel(0, common->cpsw_base + AM65_CPSW_REG_PTYPE);
+ cpsw_ale_control_set(common->ale, 0, ALE_CLEAR, 1);
cpsw_ale_start(common->ale);
/* limit to one RX flow only */
GFP_KERNEL);
if (!skb) {
dev_err(common->dev, "cannot allocate skb\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err;
}
ret = am65_cpsw_nuss_rx_push(common, skb);
"cannot submit skb to channel rx, error %d\n",
ret);
kfree_skb(skb);
- return ret;
+ goto err;
}
kmemleak_not_leak(skb);
}
for (i = 0; i < common->tx_ch_num; i++) {
ret = k3_udma_glue_enable_tx_chn(common->tx_chns[i].tx_chn);
if (ret)
- return ret;
+ goto err;
napi_enable(&common->tx_chns[i].napi_tx);
}
dev_dbg(common->dev, "cpsw_nuss started\n");
return 0;
+
+err:
+ am65_cpsw_nuss_free_tx_chns(common);
+ am65_cpsw_nuss_free_rx_chns(common);
+
+ return ret;
}
static void am65_cpsw_nuss_tx_cleanup(void *data, dma_addr_t desc_dma);
writel(0, common->cpsw_base + AM65_CPSW_REG_CTL);
writel(0, common->cpsw_base + AM65_CPSW_REG_STAT_PORT_EN);
+ am65_cpsw_nuss_free_tx_chns(common);
+ am65_cpsw_nuss_free_rx_chns(common);
+
dev_dbg(common->dev, "cpsw_nuss stopped\n");
return 0;
}
struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
struct am65_cpsw_port *port = am65_ndev_to_port(ndev);
int ret, i;
+ u32 reg;
+ int tmo;
ret = pm_runtime_resume_and_get(common->dev);
if (ret < 0)
return ret;
+ /* Idle MAC port */
+ cpsw_sl_ctl_set(port->slave.mac_sl, CPSW_SL_CTL_CMD_IDLE);
+
+ tmo = cpsw_sl_wait_for_idle(port->slave.mac_sl, 100);
+ dev_info(common->dev, "down msc_sl %08x tmo %d\n",
+ cpsw_sl_reg_read(port->slave.mac_sl, CPSW_SL_MACSTATUS), tmo);
+
+ cpsw_sl_ctl_reset(port->slave.mac_sl);
+
+ /* soft reset MAC */
+ cpsw_sl_reg_write(port->slave.mac_sl, CPSW_SL_SOFT_RESET, 1);
+ mdelay(1);
+ reg = cpsw_sl_reg_read(port->slave.mac_sl, CPSW_SL_SOFT_RESET);
+ if (reg)
+ dev_info(common->dev, "mac reset not yet done\n");
+
/* Notify the stack of the actual queue counts. */
ret = netif_set_real_num_tx_queues(ndev, common->tx_ch_num);
if (ret) {
cpsw_sl_ctl_reset(port->slave.mac_sl);
}
-static void am65_cpsw_nuss_free_tx_chns(void *data)
+static void am65_cpsw_nuss_free_tx_chns(struct am65_cpsw_common *common)
{
- struct am65_cpsw_common *common = data;
+ struct device *dev = common->dev;
int i;
for (i = 0; i < common->tx_ch_num; i++) {
if (!IS_ERR_OR_NULL(tx_chn->tx_chn))
k3_udma_glue_release_tx_chn(tx_chn->tx_chn);
- memset(tx_chn, 0, sizeof(*tx_chn));
+ /* Don't clear tx_chn memory as we need to preserve
+ * data between suspend/resume
+ */
+ if (!(tx_chn->irq < 0))
+ devm_free_irq(dev, tx_chn->irq, tx_chn);
}
}
struct device *dev = common->dev;
int i;
- devm_remove_action(dev, am65_cpsw_nuss_free_tx_chns, common);
-
for (i = 0; i < common->tx_ch_num; i++) {
struct am65_cpsw_tx_chn *tx_chn = &common->tx_chns[i];
- if (tx_chn->irq)
+ if (!(tx_chn->irq < 0))
devm_free_irq(dev, tx_chn->irq, tx_chn);
netif_napi_del(&tx_chn->napi_tx);
}
tx_chn->irq = k3_udma_glue_tx_get_irq(tx_chn->tx_chn);
- if (tx_chn->irq <= 0) {
+ if (tx_chn->irq < 0) {
dev_err(dev, "Failed to get tx dma irq %d\n",
tx_chn->irq);
goto err;
snprintf(tx_chn->tx_chn_name,
sizeof(tx_chn->tx_chn_name), "%s-tx%d",
dev_name(dev), tx_chn->id);
+
+ ret = devm_request_irq(dev, tx_chn->irq,
+ am65_cpsw_nuss_tx_irq,
+ IRQF_TRIGGER_HIGH,
+ tx_chn->tx_chn_name, tx_chn);
+ if (ret) {
+ dev_err(dev, "failure requesting tx%u irq %u, %d\n",
+ tx_chn->id, tx_chn->irq, ret);
+ tx_chn->irq = -EINVAL;
+ goto err;
+ }
}
+ return 0;
+
err:
- i = devm_add_action(dev, am65_cpsw_nuss_free_tx_chns, common);
- if (i) {
- dev_err(dev, "Failed to add free_tx_chns action %d\n", i);
- return i;
- }
+ am65_cpsw_nuss_free_tx_chns(common);
return ret;
}
-static void am65_cpsw_nuss_free_rx_chns(void *data)
+static void am65_cpsw_nuss_free_rx_chns(struct am65_cpsw_common *common)
{
- struct am65_cpsw_common *common = data;
struct am65_cpsw_rx_chn *rx_chn;
rx_chn = &common->rx_chns;
+ if (!(rx_chn->irq < 0))
+ devm_free_irq(common->dev, rx_chn->irq, common);
+
if (!IS_ERR_OR_NULL(rx_chn->desc_pool))
k3_cppi_desc_pool_destroy(rx_chn->desc_pool);
rx_cfg.swdata_size = AM65_CPSW_NAV_SW_DATA_SIZE;
rx_cfg.flow_id_num = AM65_CPSW_MAX_RX_FLOWS;
- rx_cfg.flow_id_base = common->rx_flow_id_base;
+ rx_cfg.flow_id_base = -1;
/* init all flows */
rx_chn->dev = dev;
}
}
-err:
- i = devm_add_action(dev, am65_cpsw_nuss_free_rx_chns, common);
- if (i) {
- dev_err(dev, "Failed to add free_rx_chns action %d\n", i);
- return i;
+ ret = devm_request_irq(dev, rx_chn->irq,
+ am65_cpsw_nuss_rx_irq,
+ IRQF_TRIGGER_HIGH, dev_name(dev), common);
+ if (ret) {
+ dev_err(dev, "failure requesting rx irq %u, %d\n",
+ rx_chn->irq, ret);
+ rx_chn->irq = -EINVAL;
+ goto err;
}
+ return 0;
+
+err:
+ am65_cpsw_nuss_free_rx_chns(common);
+
return ret;
}
port->slave.phylink_config.dev = &port->ndev->dev;
port->slave.phylink_config.type = PHYLINK_NETDEV;
port->slave.phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000FD;
+ port->slave.phylink_config.mac_managed_pm = true; /* MAC does PM */
if (phy_interface_mode_is_rgmii(port->slave.phy_if)) {
phy_interface_set_rgmii(port->slave.phylink_config.supported_interfaces);
static int am65_cpsw_nuss_ndev_add_tx_napi(struct am65_cpsw_common *common)
{
- struct device *dev = common->dev;
- int i, ret = 0;
+ int i;
for (i = 0; i < common->tx_ch_num; i++) {
struct am65_cpsw_tx_chn *tx_chn = &common->tx_chns[i];
netif_napi_add_tx(common->dma_ndev, &tx_chn->napi_tx,
am65_cpsw_nuss_tx_poll);
-
- ret = devm_request_irq(dev, tx_chn->irq,
- am65_cpsw_nuss_tx_irq,
- IRQF_TRIGGER_HIGH,
- tx_chn->tx_chn_name, tx_chn);
- if (ret) {
- dev_err(dev, "failure requesting tx%u irq %u, %d\n",
- tx_chn->id, tx_chn->irq, ret);
- goto err;
- }
}
-err:
- return ret;
+ return 0;
}
static void am65_cpsw_nuss_cleanup_ndev(struct am65_cpsw_common *common)
if (ret)
return ret;
- ret = devm_request_irq(dev, common->rx_chns.irq,
- am65_cpsw_nuss_rx_irq,
- IRQF_TRIGGER_HIGH, dev_name(dev), common);
- if (ret) {
- dev_err(dev, "failure requesting rx irq %u, %d\n",
- common->rx_chns.irq, ret);
- return ret;
- }
-
ret = am65_cpsw_nuss_register_devlink(common);
if (ret)
return ret;
if (common->port_num < 1 || common->port_num > AM65_CPSW_MAX_PORTS)
return -ENOENT;
- common->rx_flow_id_base = -1;
init_completion(&common->tdown_complete);
common->tx_ch_num = 1;
common->pf_p0_rx_ptype_rrobin = false;
am65_cpsw_nuss_get_ver(common);
- /* init tx channels */
- ret = am65_cpsw_nuss_init_tx_chns(common);
- if (ret)
- goto err_of_clear;
- ret = am65_cpsw_nuss_init_rx_chns(common);
- if (ret)
- goto err_of_clear;
-
ret = am65_cpsw_nuss_init_host_p(common);
if (ret)
goto err_of_clear;
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int am65_cpsw_nuss_suspend(struct device *dev)
+{
+ struct am65_cpsw_common *common = dev_get_drvdata(dev);
+ struct am65_cpsw_port *port;
+ struct net_device *ndev;
+ int i, ret;
+
+ for (i = 0; i < common->port_num; i++) {
+ port = &common->ports[i];
+ ndev = port->ndev;
+
+ if (!ndev)
+ continue;
+
+ netif_device_detach(ndev);
+ if (netif_running(ndev)) {
+ rtnl_lock();
+ ret = am65_cpsw_nuss_ndo_slave_stop(ndev);
+ rtnl_unlock();
+ if (ret < 0) {
+ netdev_err(ndev, "failed to stop: %d", ret);
+ return ret;
+ }
+ }
+ }
+
+ am65_cpts_suspend(common->cpts);
+
+ return 0;
+}
+
+static int am65_cpsw_nuss_resume(struct device *dev)
+{
+ struct am65_cpsw_common *common = dev_get_drvdata(dev);
+ struct am65_cpsw_port *port;
+ struct net_device *ndev;
+ int i, ret;
+
+ am65_cpts_resume(common->cpts);
+
+ for (i = 0; i < common->port_num; i++) {
+ port = &common->ports[i];
+ ndev = port->ndev;
+
+ if (!ndev)
+ continue;
+
+ if (netif_running(ndev)) {
+ rtnl_lock();
+ ret = am65_cpsw_nuss_ndo_slave_open(ndev);
+ rtnl_unlock();
+ if (ret < 0) {
+ netdev_err(ndev, "failed to start: %d", ret);
+ return ret;
+ }
+ }
+
+ netif_device_attach(ndev);
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct dev_pm_ops am65_cpsw_nuss_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(am65_cpsw_nuss_suspend, am65_cpsw_nuss_resume)
+};
+
static struct platform_driver am65_cpsw_nuss_driver = {
.driver = {
.name = AM65_CPSW_DRV_NAME,
.of_match_table = am65_cpsw_nuss_of_mtable,
+ .pm = &am65_cpsw_nuss_dev_pm_ops,
},
.probe = am65_cpsw_nuss_probe,
.remove = am65_cpsw_nuss_remove,
projects / linux-stable / commitdiff