diff options
Diffstat (limited to 'drivers/net/ethernet/hisilicon/hibmcge/hbg_irq.c')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hibmcge/hbg_irq.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_irq.c b/drivers/net/ethernet/hisilicon/hibmcge/hbg_irq.c new file mode 100644 index 000000000000..8af0bc4cca21 --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_irq.c @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Copyright (c) 2024 Hisilicon Limited. + +#include <linux/interrupt.h> +#include "hbg_irq.h" +#include "hbg_hw.h" + +static void hbg_irq_handle_err(struct hbg_priv *priv, + const struct hbg_irq_info *irq_info) +{ + if (irq_info->need_print) + dev_err(&priv->pdev->dev, + "receive error interrupt: %s\n", irq_info->name); + + if (irq_info->need_reset) + hbg_err_reset_task_schedule(priv); +} + +static void hbg_irq_handle_tx(struct hbg_priv *priv, + const struct hbg_irq_info *irq_info) +{ + napi_schedule(&priv->tx_ring.napi); +} + +static void hbg_irq_handle_rx(struct hbg_priv *priv, + const struct hbg_irq_info *irq_info) +{ + napi_schedule(&priv->rx_ring.napi); +} + +static void hbg_irq_handle_rx_buf_val(struct hbg_priv *priv, + const struct hbg_irq_info *irq_info) +{ + priv->stats.rx_fifo_less_empty_thrsld_cnt++; +} + +#define HBG_IRQ_I(name, handle) \ + {#name, HBG_INT_MSK_##name##_B, false, false, false, handle} +#define HBG_ERR_IRQ_I(name, need_print, ndde_reset) \ + {#name, HBG_INT_MSK_##name##_B, true, need_print, \ + ndde_reset, hbg_irq_handle_err} + +static const struct hbg_irq_info hbg_irqs[] = { + HBG_IRQ_I(RX, hbg_irq_handle_rx), + HBG_IRQ_I(TX, hbg_irq_handle_tx), + HBG_ERR_IRQ_I(TX_PKT_CPL, true, true), + HBG_ERR_IRQ_I(MAC_MII_FIFO_ERR, true, true), + HBG_ERR_IRQ_I(MAC_PCS_RX_FIFO_ERR, true, true), + HBG_ERR_IRQ_I(MAC_PCS_TX_FIFO_ERR, true, true), + HBG_ERR_IRQ_I(MAC_APP_RX_FIFO_ERR, true, true), + HBG_ERR_IRQ_I(MAC_APP_TX_FIFO_ERR, true, true), + HBG_ERR_IRQ_I(SRAM_PARITY_ERR, true, false), + HBG_ERR_IRQ_I(TX_AHB_ERR, true, true), + HBG_IRQ_I(RX_BUF_AVL, hbg_irq_handle_rx_buf_val), + HBG_ERR_IRQ_I(REL_BUF_ERR, true, false), + HBG_ERR_IRQ_I(TXCFG_AVL, false, false), + HBG_ERR_IRQ_I(TX_DROP, false, false), + HBG_ERR_IRQ_I(RX_DROP, false, false), + HBG_ERR_IRQ_I(RX_AHB_ERR, true, false), + HBG_ERR_IRQ_I(MAC_FIFO_ERR, true, true), + HBG_ERR_IRQ_I(RBREQ_ERR, true, true), + HBG_ERR_IRQ_I(WE_ERR, true, true), +}; + +static irqreturn_t hbg_irq_handle(int irq_num, void *p) +{ + const struct hbg_irq_info *info; + struct hbg_priv *priv = p; + u32 status; + u32 i; + + status = hbg_hw_get_irq_status(priv); + for (i = 0; i < priv->vectors.info_array_len; i++) { + info = &priv->vectors.info_array[i]; + if (status & info->mask) { + if (!hbg_hw_irq_is_enabled(priv, info->mask)) + continue; + + hbg_hw_irq_enable(priv, info->mask, false); + hbg_hw_irq_clear(priv, info->mask); + + priv->vectors.stats_array[i]++; + if (info->irq_handle) + info->irq_handle(priv, info); + + if (info->re_enable) + hbg_hw_irq_enable(priv, info->mask, true); + } + } + + return IRQ_HANDLED; +} + +static const char *irq_names_map[HBG_VECTOR_NUM] = { "tx", "rx", + "err", "mdio" }; + +int hbg_irq_init(struct hbg_priv *priv) +{ + struct hbg_vector *vectors = &priv->vectors; + struct device *dev = &priv->pdev->dev; + int ret, id; + u32 i; + + /* used pcim_enable_device(), so the vectors become device managed */ + ret = pci_alloc_irq_vectors(priv->pdev, HBG_VECTOR_NUM, HBG_VECTOR_NUM, + PCI_IRQ_MSI | PCI_IRQ_MSIX); + if (ret < 0) + return dev_err_probe(dev, ret, "failed to allocate vectors\n"); + + if (ret != HBG_VECTOR_NUM) + return dev_err_probe(dev, -EINVAL, + "requested %u MSI, but allocated %d MSI\n", + HBG_VECTOR_NUM, ret); + + /* mdio irq not requested, so the number of requested interrupts + * is HBG_VECTOR_NUM - 1. + */ + for (i = 0; i < HBG_VECTOR_NUM - 1; i++) { + id = pci_irq_vector(priv->pdev, i); + if (id < 0) + return dev_err_probe(dev, id, "failed to get irq id\n"); + + snprintf(vectors->name[i], sizeof(vectors->name[i]), "%s-%s-%s", + dev_driver_string(dev), pci_name(priv->pdev), + irq_names_map[i]); + + ret = devm_request_irq(dev, id, hbg_irq_handle, 0, + vectors->name[i], priv); + if (ret) + return dev_err_probe(dev, ret, + "failed to request irq: %s\n", + irq_names_map[i]); + } + + vectors->stats_array = devm_kcalloc(&priv->pdev->dev, + ARRAY_SIZE(hbg_irqs), + sizeof(u64), GFP_KERNEL); + if (!vectors->stats_array) + return -ENOMEM; + + vectors->info_array = hbg_irqs; + vectors->info_array_len = ARRAY_SIZE(hbg_irqs); + return 0; +} |