@@ -7,4 +7,7 @@ obj-$(CONFIG_8139CP) += 8139cp.o
obj-$(CONFIG_8139TOO) += 8139too.o
obj-$(CONFIG_ATP) += atp.o
r8169-objs += r8169_main.o r8169_firmware.o r8169_phy_config.o
+ifdef CONFIG_LEDS_TRIGGER_NETDEV
+r8169-objs += r8169_leds.o
+endif
obj-$(CONFIG_R8169) += r8169.o
@@ -8,6 +8,7 @@
* See MAINTAINERS file for support contact information.
*/
+#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/phy.h>
@@ -77,3 +78,9 @@ u16 rtl8168h_2_get_adc_bias_ioffset(struct rtl8169_private *tp);
u8 rtl8168d_efuse_read(struct rtl8169_private *tp, int reg_addr);
void r8169_hw_phy_config(struct rtl8169_private *tp, struct phy_device *phydev,
enum mac_version ver);
+
+void r8169_get_led_name(struct rtl8169_private *tp, int idx,
+ char *buf, int buf_len);
+int rtl8168_get_led_mode(struct rtl8169_private *tp);
+int rtl8168_led_mod_ctrl(struct rtl8169_private *tp, u16 mask, u16 val);
+void rtl8168_init_leds(struct net_device *ndev);
new file mode 100644
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* r8169_leds.c: Realtek 8169/8168/8101/8125 ethernet driver.
+ *
+ * Copyright (c) 2023 Heiner Kallweit <hkallweit1@gmail.com>
+ *
+ * See MAINTAINERS file for support contact information.
+ */
+
+#include <linux/leds.h>
+#include <linux/netdevice.h>
+#include <uapi/linux/uleds.h>
+
+#include "r8169.h"
+
+#define RTL8168_LED_CTRL_OPTION2 BIT(15)
+#define RTL8168_LED_CTRL_ACT BIT(3)
+#define RTL8168_LED_CTRL_LINK_1000 BIT(2)
+#define RTL8168_LED_CTRL_LINK_100 BIT(1)
+#define RTL8168_LED_CTRL_LINK_10 BIT(0)
+
+#define RTL8168_NUM_LEDS 3
+
+#define RTL8168_SUPPORTED_MODES \
+ (BIT(TRIGGER_NETDEV_LINK_1000) | BIT(TRIGGER_NETDEV_LINK_100) | \
+ BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_RX) | \
+ BIT(TRIGGER_NETDEV_TX))
+
+struct r8169_led_classdev {
+ struct led_classdev led;
+ struct net_device *ndev;
+ int index;
+};
+
+#define lcdev_to_r8169_ldev(lcdev) container_of(lcdev, struct r8169_led_classdev, led)
+
+static int rtl8168_led_hw_control_is_supported(struct led_classdev *led_cdev,
+ unsigned long flags)
+{
+ struct r8169_led_classdev *ldev = lcdev_to_r8169_ldev(led_cdev);
+ struct rtl8169_private *tp = netdev_priv(ldev->ndev);
+ int shift = ldev->index * 4;
+ bool rx, tx;
+
+ if (flags & ~RTL8168_SUPPORTED_MODES)
+ goto nosupp;
+
+ rx = flags & BIT(TRIGGER_NETDEV_RX);
+ tx = flags & BIT(TRIGGER_NETDEV_TX);
+ if (rx != tx)
+ goto nosupp;
+
+ return 0;
+
+nosupp:
+ /* Switch LED off to indicate that mode isn't supported */
+ rtl8168_led_mod_ctrl(tp, 0x000f << shift, 0);
+ return -EOPNOTSUPP;
+}
+
+static int rtl8168_led_hw_control_set(struct led_classdev *led_cdev,
+ unsigned long flags)
+{
+ struct r8169_led_classdev *ldev = lcdev_to_r8169_ldev(led_cdev);
+ struct rtl8169_private *tp = netdev_priv(ldev->ndev);
+ int shift = ldev->index * 4;
+ u16 mode = 0;
+
+ if (flags & BIT(TRIGGER_NETDEV_LINK_10))
+ mode |= RTL8168_LED_CTRL_LINK_10;
+ if (flags & BIT(TRIGGER_NETDEV_LINK_100))
+ mode |= RTL8168_LED_CTRL_LINK_100;
+ if (flags & BIT(TRIGGER_NETDEV_LINK_1000))
+ mode |= RTL8168_LED_CTRL_LINK_1000;
+ if (flags & BIT(TRIGGER_NETDEV_TX))
+ mode |= RTL8168_LED_CTRL_ACT;
+
+ return rtl8168_led_mod_ctrl(tp, 0x000f << shift, mode << shift);
+}
+
+static int rtl8168_led_hw_control_get(struct led_classdev *led_cdev,
+ unsigned long *flags)
+{
+ struct r8169_led_classdev *ldev = lcdev_to_r8169_ldev(led_cdev);
+ struct rtl8169_private *tp = netdev_priv(ldev->ndev);
+ int shift = ldev->index * 4;
+ int mode;
+
+ mode = rtl8168_get_led_mode(tp);
+ if (mode < 0)
+ return mode;
+
+ if (mode & RTL8168_LED_CTRL_OPTION2) {
+ rtl8168_led_mod_ctrl(tp, RTL8168_LED_CTRL_OPTION2, 0);
+ netdev_notice(ldev->ndev, "Deactivating unsupported Option2 LED mode\n");
+ }
+
+ mode = (mode >> shift) & 0x000f;
+
+ if (mode & RTL8168_LED_CTRL_ACT)
+ *flags |= BIT(TRIGGER_NETDEV_TX) | BIT(TRIGGER_NETDEV_RX);
+
+ if (mode & RTL8168_LED_CTRL_LINK_10)
+ *flags |= BIT(TRIGGER_NETDEV_LINK_10);
+ if (mode & RTL8168_LED_CTRL_LINK_100)
+ *flags |= BIT(TRIGGER_NETDEV_LINK_100);
+ if (mode & RTL8168_LED_CTRL_LINK_1000)
+ *flags |= BIT(TRIGGER_NETDEV_LINK_1000);
+
+ return 0;
+}
+
+static struct device *
+ r8169_led_hw_control_get_device(struct led_classdev *led_cdev)
+{
+ struct r8169_led_classdev *ldev = lcdev_to_r8169_ldev(led_cdev);
+
+ return &ldev->ndev->dev;
+}
+
+static void rtl8168_setup_ldev(struct r8169_led_classdev *ldev,
+ struct net_device *ndev, int index)
+{
+ struct rtl8169_private *tp = netdev_priv(ndev);
+ struct led_classdev *led_cdev = &ldev->led;
+ char led_name[LED_MAX_NAME_SIZE];
+
+ ldev->ndev = ndev;
+ ldev->index = index;
+
+ r8169_get_led_name(tp, index, led_name, LED_MAX_NAME_SIZE);
+ led_cdev->name = led_name;
+ led_cdev->hw_control_trigger = "netdev";
+ led_cdev->flags |= LED_RETAIN_AT_SHUTDOWN;
+ led_cdev->hw_control_is_supported = rtl8168_led_hw_control_is_supported;
+ led_cdev->hw_control_set = rtl8168_led_hw_control_set;
+ led_cdev->hw_control_get = rtl8168_led_hw_control_get;
+ led_cdev->hw_control_get_device = r8169_led_hw_control_get_device;
+
+ /* ignore errors */
+ devm_led_classdev_register(&ndev->dev, led_cdev);
+}
+
+void rtl8168_init_leds(struct net_device *ndev)
+{
+ /* bind resource mgmt to netdev */
+ struct device *dev = &ndev->dev;
+ struct r8169_led_classdev *leds;
+ int i;
+
+ leds = devm_kcalloc(dev, RTL8168_NUM_LEDS, sizeof(*leds), GFP_KERNEL);
+ if (!leds)
+ return;
+
+ for (i = 0; i < RTL8168_NUM_LEDS; i++)
+ rtl8168_setup_ldev(leds + i, ndev, i);
+}
@@ -285,6 +285,7 @@ enum rtl8168_8101_registers {
};
enum rtl8168_registers {
+ LED_CTRL = 0x18,
LED_FREQ = 0x1a,
EEE_LED = 0x1b,
ERIDR = 0x70,
@@ -616,6 +617,7 @@ struct rtl8169_private {
raw_spinlock_t config25_lock;
raw_spinlock_t mac_ocp_lock;
+ struct mutex led_lock; /* serialize LED ctrl RMW access */
raw_spinlock_t cfg9346_usage_lock;
int cfg9346_usage_count;
@@ -788,6 +790,48 @@ static const struct rtl_cond name = { \
\
static bool name ## _check(struct rtl8169_private *tp)
+int rtl8168_led_mod_ctrl(struct rtl8169_private *tp, u16 mask, u16 val)
+{
+ struct device *dev = tp_to_dev(tp);
+ int ret;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0)
+ return ret;
+
+ mutex_lock(&tp->led_lock);
+ RTL_W16(tp, LED_CTRL, (RTL_R16(tp, LED_CTRL) & ~mask) | val);
+ mutex_unlock(&tp->led_lock);
+
+ pm_runtime_put_sync(dev);
+
+ return 0;
+}
+
+int rtl8168_get_led_mode(struct rtl8169_private *tp)
+{
+ struct device *dev = tp_to_dev(tp);
+ int ret;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0)
+ return ret;
+
+ ret = RTL_R16(tp, LED_CTRL);
+
+ pm_runtime_put_sync(dev);
+
+ return ret;
+}
+
+void r8169_get_led_name(struct rtl8169_private *tp, int idx,
+ char *buf, int buf_len)
+{
+ snprintf(buf, buf_len, "r8169-%x%x-led%d",
+ pci_domain_nr(tp->pci_dev->bus),
+ pci_dev_id(tp->pci_dev), idx);
+}
+
static void r8168fp_adjust_ocp_cmd(struct rtl8169_private *tp, u32 *cmd, int type)
{
/* based on RTL8168FP_OOBMAC_BASE in vendor driver */
@@ -5141,6 +5185,7 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
raw_spin_lock_init(&tp->cfg9346_usage_lock);
raw_spin_lock_init(&tp->config25_lock);
raw_spin_lock_init(&tp->mac_ocp_lock);
+ mutex_init(&tp->led_lock);
dev->tstats = devm_netdev_alloc_pcpu_stats(&pdev->dev,
struct pcpu_sw_netstats);
@@ -5297,6 +5342,12 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (rc)
return rc;
+#if IS_REACHABLE(CONFIG_LEDS_CLASS) && IS_ENABLED(CONFIG_LEDS_TRIGGER_NETDEV)
+ if (tp->mac_version > RTL_GIGA_MAC_VER_06 &&
+ tp->mac_version < RTL_GIGA_MAC_VER_61)
+ rtl8168_init_leds(dev);
+#endif
+
netdev_info(dev, "%s, %pM, XID %03x, IRQ %d\n",
rtl_chip_infos[chipset].name, dev->dev_addr, xid, tp->irq);
This adds support for the LED's on most chip versions. Excluded are the old non-PCIe versions and RTL8125. RTL8125 has a different LED register layout, support for it will follow later. LED's can be controlled from userspace using the netdev LED trigger. Tested on RTL8168h. Note: The driver can't know which LED's are actually physically wired. Therefore not every LED device may represent a physically available LED. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> --- drivers/net/ethernet/realtek/Makefile | 3 + drivers/net/ethernet/realtek/r8169.h | 7 + drivers/net/ethernet/realtek/r8169_leds.c | 156 ++++++++++++++++++++++ drivers/net/ethernet/realtek/r8169_main.c | 51 +++++++ 4 files changed, 217 insertions(+) create mode 100644 drivers/net/ethernet/realtek/r8169_leds.c