MODULE_PARM_DESC(chain_mode, "To use chain instead of ring mode");
static irqreturn_t stmmac_interrupt(int irq, void *dev_id);
+/* For MSI interrupts handling */
+static irqreturn_t stmmac_mac_interrupt(int irq, void *dev_id);
+static irqreturn_t stmmac_safety_interrupt(int irq, void *dev_id);
+static irqreturn_t stmmac_msi_intr_tx(int irq, void *data);
+static irqreturn_t stmmac_msi_intr_rx(int irq, void *data);
#ifdef CONFIG_DEBUG_FS
static const struct net_device_ops stmmac_netdev_ops;
clk_disable_unprepare(priv->plat->clk_ptp_ref);
}
+static void stmmac_free_irq(struct net_device *dev,
+ enum request_irq_err irq_err, int irq_idx)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int j;
+
+ switch (irq_err) {
+ case REQ_IRQ_ERR_ALL:
+ irq_idx = priv->plat->tx_queues_to_use;
+ fallthrough;
+ case REQ_IRQ_ERR_TX:
+ for (j = irq_idx - 1; j >= 0; j--) {
+ if (priv->tx_irq[j] > 0)
+ free_irq(priv->tx_irq[j], &priv->tx_queue[j]);
+ }
+ irq_idx = priv->plat->rx_queues_to_use;
+ fallthrough;
+ case REQ_IRQ_ERR_RX:
+ for (j = irq_idx - 1; j >= 0; j--) {
+ if (priv->rx_irq[j] > 0)
+ free_irq(priv->rx_irq[j], &priv->rx_queue[j]);
+ }
+
+ if (priv->sfty_ue_irq > 0 && priv->sfty_ue_irq != dev->irq)
+ free_irq(priv->sfty_ue_irq, dev);
+ fallthrough;
+ case REQ_IRQ_ERR_SFTY_UE:
+ if (priv->sfty_ce_irq > 0 && priv->sfty_ce_irq != dev->irq)
+ free_irq(priv->sfty_ce_irq, dev);
+ fallthrough;
+ case REQ_IRQ_ERR_SFTY_CE:
+ if (priv->lpi_irq > 0 && priv->lpi_irq != dev->irq)
+ free_irq(priv->lpi_irq, dev);
+ fallthrough;
+ case REQ_IRQ_ERR_LPI:
+ if (priv->wol_irq > 0 && priv->wol_irq != dev->irq)
+ free_irq(priv->wol_irq, dev);
+ fallthrough;
+ case REQ_IRQ_ERR_WOL:
+ free_irq(dev->irq, dev);
+ fallthrough;
+ case REQ_IRQ_ERR_MAC:
+ case REQ_IRQ_ERR_NO:
+ /* If MAC IRQ request error, no more IRQ to free */
+ break;
+ }
+}
+
+static int stmmac_request_irq_multi_msi(struct net_device *dev)
+{
+ enum request_irq_err irq_err = REQ_IRQ_ERR_NO;
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int irq_idx = 0;
+ char *int_name;
+ int ret;
+ int i;
+
+ /* For common interrupt */
+ int_name = priv->int_name_mac;
+ sprintf(int_name, "%s:%s", dev->name, "mac");
+ ret = request_irq(dev->irq, stmmac_mac_interrupt,
+ 0, int_name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc mac MSI %d (error: %d)\n",
+ __func__, dev->irq, ret);
+ irq_err = REQ_IRQ_ERR_MAC;
+ goto irq_error;
+ }
+
+ /* Request the Wake IRQ in case of another line
+ * is used for WoL
+ */
+ if (priv->wol_irq > 0 && priv->wol_irq != dev->irq) {
+ int_name = priv->int_name_wol;
+ sprintf(int_name, "%s:%s", dev->name, "wol");
+ ret = request_irq(priv->wol_irq,
+ stmmac_mac_interrupt,
+ 0, int_name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc wol MSI %d (error: %d)\n",
+ __func__, priv->wol_irq, ret);
+ irq_err = REQ_IRQ_ERR_WOL;
+ goto irq_error;
+ }
+ }
+
+ /* Request the LPI IRQ in case of another line
+ * is used for LPI
+ */
+ if (priv->lpi_irq > 0 && priv->lpi_irq != dev->irq) {
+ int_name = priv->int_name_lpi;
+ sprintf(int_name, "%s:%s", dev->name, "lpi");
+ ret = request_irq(priv->lpi_irq,
+ stmmac_mac_interrupt,
+ 0, int_name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc lpi MSI %d (error: %d)\n",
+ __func__, priv->lpi_irq, ret);
+ irq_err = REQ_IRQ_ERR_LPI;
+ goto irq_error;
+ }
+ }
+
+ /* Request the Safety Feature Correctible Error line in
+ * case of another line is used
+ */
+ if (priv->sfty_ce_irq > 0 && priv->sfty_ce_irq != dev->irq) {
+ int_name = priv->int_name_sfty_ce;
+ sprintf(int_name, "%s:%s", dev->name, "safety-ce");
+ ret = request_irq(priv->sfty_ce_irq,
+ stmmac_safety_interrupt,
+ 0, int_name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc sfty ce MSI %d (error: %d)\n",
+ __func__, priv->sfty_ce_irq, ret);
+ irq_err = REQ_IRQ_ERR_SFTY_CE;
+ goto irq_error;
+ }
+ }
+
+ /* Request the Safety Feature Uncorrectible Error line in
+ * case of another line is used
+ */
+ if (priv->sfty_ue_irq > 0 && priv->sfty_ue_irq != dev->irq) {
+ int_name = priv->int_name_sfty_ue;
+ sprintf(int_name, "%s:%s", dev->name, "safety-ue");
+ ret = request_irq(priv->sfty_ue_irq,
+ stmmac_safety_interrupt,
+ 0, int_name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc sfty ue MSI %d (error: %d)\n",
+ __func__, priv->sfty_ue_irq, ret);
+ irq_err = REQ_IRQ_ERR_SFTY_UE;
+ goto irq_error;
+ }
+ }
+
+ /* Request Rx MSI irq */
+ for (i = 0; i < priv->plat->rx_queues_to_use; i++) {
+ if (priv->rx_irq[i] == 0)
+ continue;
+
+ int_name = priv->int_name_rx_irq[i];
+ sprintf(int_name, "%s:%s-%d", dev->name, "rx", i);
+ ret = request_irq(priv->rx_irq[i],
+ stmmac_msi_intr_rx,
+ 0, int_name, &priv->rx_queue[i]);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc rx-%d MSI %d (error: %d)\n",
+ __func__, i, priv->rx_irq[i], ret);
+ irq_err = REQ_IRQ_ERR_RX;
+ irq_idx = i;
+ goto irq_error;
+ }
+ }
+
+ /* Request Tx MSI irq */
+ for (i = 0; i < priv->plat->tx_queues_to_use; i++) {
+ if (priv->tx_irq[i] == 0)
+ continue;
+
+ int_name = priv->int_name_tx_irq[i];
+ sprintf(int_name, "%s:%s-%d", dev->name, "tx", i);
+ ret = request_irq(priv->tx_irq[i],
+ stmmac_msi_intr_tx,
+ 0, int_name, &priv->tx_queue[i]);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc tx-%d MSI %d (error: %d)\n",
+ __func__, i, priv->tx_irq[i], ret);
+ irq_err = REQ_IRQ_ERR_TX;
+ irq_idx = i;
+ goto irq_error;
+ }
+ }
+
+ return 0;
+
+irq_error:
+ stmmac_free_irq(dev, irq_err, irq_idx);
+ return ret;
+}
+
+static int stmmac_request_irq_single(struct net_device *dev)
+{
+ enum request_irq_err irq_err = REQ_IRQ_ERR_NO;
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int ret;
+
+ ret = request_irq(dev->irq, stmmac_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: ERROR: allocating the IRQ %d (error: %d)\n",
+ __func__, dev->irq, ret);
+ irq_err = REQ_IRQ_ERR_MAC;
+ return ret;
+ }
+
+ /* Request the Wake IRQ in case of another line
+ * is used for WoL
+ */
+ if (priv->wol_irq > 0 && priv->wol_irq != dev->irq) {
+ ret = request_irq(priv->wol_irq, stmmac_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: ERROR: allocating the WoL IRQ %d (%d)\n",
+ __func__, priv->wol_irq, ret);
+ irq_err = REQ_IRQ_ERR_WOL;
+ return ret;
+ }
+ }
+
+ /* Request the IRQ lines */
+ if (priv->lpi_irq > 0 && priv->lpi_irq != dev->irq) {
+ ret = request_irq(priv->lpi_irq, stmmac_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: ERROR: allocating the LPI IRQ %d (%d)\n",
+ __func__, priv->lpi_irq, ret);
+ irq_err = REQ_IRQ_ERR_LPI;
+ goto irq_error;
+ }
+ }
+
+ return 0;
+
+irq_error:
+ stmmac_free_irq(dev, irq_err, 0);
+ return ret;
+}
+
+static int stmmac_request_irq(struct net_device *dev)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int ret;
+
+ /* Request the IRQ lines */
+ if (priv->plat->multi_msi_en)
+ ret = stmmac_request_irq_multi_msi(dev);
+ else
+ ret = stmmac_request_irq_single(dev);
+
+ return ret;
+}
+
/**
* stmmac_open - open entry point of the driver
* @dev : pointer to the device structure.
/* We may have called phylink_speed_down before */
phylink_speed_up(priv->phylink);
- /* Request the IRQ lines */
- ret = request_irq(dev->irq, stmmac_interrupt,
- IRQF_SHARED, dev->name, dev);
- if (unlikely(ret < 0)) {
- netdev_err(priv->dev,
- "%s: ERROR: allocating the IRQ %d (error: %d)\n",
- __func__, dev->irq, ret);
+ ret = stmmac_request_irq(dev);
+ if (ret)
goto irq_error;
- }
-
- /* Request the Wake IRQ in case of another line is used for WoL */
- if (priv->wol_irq != dev->irq) {
- ret = request_irq(priv->wol_irq, stmmac_interrupt,
- IRQF_SHARED, dev->name, dev);
- if (unlikely(ret < 0)) {
- netdev_err(priv->dev,
- "%s: ERROR: allocating the WoL IRQ %d (%d)\n",
- __func__, priv->wol_irq, ret);
- goto wolirq_error;
- }
- }
-
- /* Request the IRQ lines */
- if (priv->lpi_irq > 0) {
- ret = request_irq(priv->lpi_irq, stmmac_interrupt, IRQF_SHARED,
- dev->name, dev);
- if (unlikely(ret < 0)) {
- netdev_err(priv->dev,
- "%s: ERROR: allocating the LPI IRQ %d (%d)\n",
- __func__, priv->lpi_irq, ret);
- goto lpiirq_error;
- }
- }
stmmac_enable_all_queues(priv);
netif_tx_start_all_queues(priv->dev);
return 0;
-lpiirq_error:
- if (priv->wol_irq != dev->irq)
- free_irq(priv->wol_irq, dev);
-wolirq_error:
- free_irq(dev->irq, dev);
irq_error:
phylink_stop(priv->phylink);
hrtimer_cancel(&priv->tx_queue[chan].txtimer);
/* Free the IRQ lines */
- free_irq(dev->irq, dev);
- if (priv->wol_irq != dev->irq)
- free_irq(priv->wol_irq, dev);
- if (priv->lpi_irq > 0)
- free_irq(priv->lpi_irq, dev);
+ stmmac_free_irq(dev, REQ_IRQ_ERR_ALL, 0);
if (priv->eee_enabled) {
priv->tx_path_in_lpi_mode = false;
return IRQ_HANDLED;
}
+static irqreturn_t stmmac_mac_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ if (unlikely(!dev)) {
+ netdev_err(priv->dev, "%s: invalid dev pointer\n", __func__);
+ return IRQ_NONE;
+ }
+
+ /* Check if adapter is up */
+ if (test_bit(STMMAC_DOWN, &priv->state))
+ return IRQ_HANDLED;
+
+ /* To handle Common interrupts */
+ stmmac_common_interrupt(priv);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t stmmac_safety_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ if (unlikely(!dev)) {
+ netdev_err(priv->dev, "%s: invalid dev pointer\n", __func__);
+ return IRQ_NONE;
+ }
+
+ /* Check if adapter is up */
+ if (test_bit(STMMAC_DOWN, &priv->state))
+ return IRQ_HANDLED;
+
+ /* Check if a fatal error happened */
+ stmmac_safety_feat_interrupt(priv);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t stmmac_msi_intr_tx(int irq, void *data)
+{
+ struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)data;
+ int chan = tx_q->queue_index;
+ struct stmmac_priv *priv;
+ int status;
+
+ priv = container_of(tx_q, struct stmmac_priv, tx_queue[chan]);
+
+ if (unlikely(!data)) {
+ netdev_err(priv->dev, "%s: invalid dev pointer\n", __func__);
+ return IRQ_NONE;
+ }
+
+ /* Check if adapter is up */
+ if (test_bit(STMMAC_DOWN, &priv->state))
+ return IRQ_HANDLED;
+
+ status = stmmac_napi_check(priv, chan, DMA_DIR_TX);
+
+ if (unlikely(status & tx_hard_error_bump_tc)) {
+ /* Try to bump up the dma threshold on this failure */
+ if (unlikely(priv->xstats.threshold != SF_DMA_MODE) &&
+ tc <= 256) {
+ tc += 64;
+ if (priv->plat->force_thresh_dma_mode)
+ stmmac_set_dma_operation_mode(priv,
+ tc,
+ tc,
+ chan);
+ else
+ stmmac_set_dma_operation_mode(priv,
+ tc,
+ SF_DMA_MODE,
+ chan);
+ priv->xstats.threshold = tc;
+ }
+ } else if (unlikely(status == tx_hard_error)) {
+ stmmac_tx_err(priv, chan);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t stmmac_msi_intr_rx(int irq, void *data)
+{
+ struct stmmac_rx_queue *rx_q = (struct stmmac_rx_queue *)data;
+ int chan = rx_q->queue_index;
+ struct stmmac_priv *priv;
+
+ priv = container_of(rx_q, struct stmmac_priv, rx_queue[chan]);
+
+ if (unlikely(!data)) {
+ netdev_err(priv->dev, "%s: invalid dev pointer\n", __func__);
+ return IRQ_NONE;
+ }
+
+ /* Check if adapter is up */
+ if (test_bit(STMMAC_DOWN, &priv->state))
+ return IRQ_HANDLED;
+
+ stmmac_napi_check(priv, chan, DMA_DIR_RX);
+
+ return IRQ_HANDLED;
+}
+
#ifdef CONFIG_NET_POLL_CONTROLLER
/* Polling receive - used by NETCONSOLE and other diagnostic tools
* to allow network I/O with interrupts disabled.
*/
static void stmmac_poll_controller(struct net_device *dev)
{
- disable_irq(dev->irq);
- stmmac_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int i;
+
+ /* If adapter is down, do nothing */
+ if (test_bit(STMMAC_DOWN, &priv->state))
+ return;
+
+ if (priv->plat->multi_msi_en) {
+ for (i = 0; i < priv->plat->rx_queues_to_use; i++)
+ stmmac_msi_intr_rx(0, &priv->rx_queue[i]);
+
+ for (i = 0; i < priv->plat->tx_queues_to_use; i++)
+ stmmac_msi_intr_tx(0, &priv->tx_queue[i]);
+ } else {
+ disable_irq(dev->irq);
+ stmmac_interrupt(dev->irq, dev);
+ enable_irq(dev->irq);
+ }
}
#endif
priv->dev->irq = res->irq;
priv->wol_irq = res->wol_irq;
priv->lpi_irq = res->lpi_irq;
+ priv->sfty_ce_irq = res->sfty_ce_irq;
+ priv->sfty_ue_irq = res->sfty_ue_irq;
+ for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
+ priv->rx_irq[i] = res->rx_irq[i];
+ for (i = 0; i < MTL_MAX_TX_QUEUES; i++)
+ priv->tx_irq[i] = res->tx_irq[i];
if (!IS_ERR_OR_NULL(res->mac))
memcpy(priv->dev->dev_addr, res->mac, ETH_ALEN);