diff options
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hibmcge/hbg_common.h | 26 | ||||
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c | 77 | ||||
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.h | 34 | ||||
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c | 16 | ||||
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hibmcge/hbg_reg.h | 20 |
5 files changed, 173 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_common.h b/drivers/net/ethernet/hisilicon/hibmcge/hbg_common.h index 614650e9a71f..6fbc24803942 100644 --- a/drivers/net/ethernet/hisilicon/hibmcge/hbg_common.h +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_common.h @@ -7,10 +7,36 @@ #include <linux/netdevice.h> #include <linux/pci.h> +enum hbg_nic_state { + HBG_NIC_STATE_EVENT_HANDLING = 0, +}; + +enum hbg_hw_event_type { + HBG_HW_EVENT_NONE = 0, + HBG_HW_EVENT_INIT, /* driver is loading */ +}; + +struct hbg_dev_specs { + u32 mac_id; + struct sockaddr mac_addr; + u32 phy_addr; + u32 mdio_frequency; + u32 rx_fifo_num; + u32 tx_fifo_num; + u32 vlan_layers; + u32 max_mtu; + u32 min_mtu; + + u32 max_frame_len; + u32 rx_buf_size; +}; + struct hbg_priv { struct net_device *netdev; struct pci_dev *pdev; u8 __iomem *io_base; + struct hbg_dev_specs dev_specs; + unsigned long state; }; #endif diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c b/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c new file mode 100644 index 000000000000..65cd13ebe5d0 --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Copyright (c) 2024 Hisilicon Limited. + +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/iopoll.h> +#include <linux/minmax.h> +#include "hbg_common.h" +#include "hbg_hw.h" +#include "hbg_reg.h" + +#define HBG_HW_EVENT_WAIT_TIMEOUT_US (2 * 1000 * 1000) +#define HBG_HW_EVENT_WAIT_INTERVAL_US (10 * 1000) + +static bool hbg_hw_spec_is_valid(struct hbg_priv *priv) +{ + return hbg_reg_read(priv, HBG_REG_SPEC_VALID_ADDR) && + !hbg_reg_read(priv, HBG_REG_EVENT_REQ_ADDR); +} + +int hbg_hw_event_notify(struct hbg_priv *priv, + enum hbg_hw_event_type event_type) +{ + bool is_valid; + int ret; + + if (test_and_set_bit(HBG_NIC_STATE_EVENT_HANDLING, &priv->state)) + return -EBUSY; + + /* notify */ + hbg_reg_write(priv, HBG_REG_EVENT_REQ_ADDR, event_type); + + ret = read_poll_timeout(hbg_hw_spec_is_valid, is_valid, is_valid, + HBG_HW_EVENT_WAIT_INTERVAL_US, + HBG_HW_EVENT_WAIT_TIMEOUT_US, + HBG_HW_EVENT_WAIT_INTERVAL_US, priv); + + clear_bit(HBG_NIC_STATE_EVENT_HANDLING, &priv->state); + + if (ret) + dev_err(&priv->pdev->dev, + "event %d wait timeout\n", event_type); + + return ret; +} + +static int hbg_hw_dev_specs_init(struct hbg_priv *priv) +{ + struct hbg_dev_specs *specs = &priv->dev_specs; + u64 mac_addr; + + if (!hbg_hw_spec_is_valid(priv)) { + dev_err(&priv->pdev->dev, "dev_specs not init\n"); + return -EINVAL; + } + + specs->mac_id = hbg_reg_read(priv, HBG_REG_MAC_ID_ADDR); + specs->phy_addr = hbg_reg_read(priv, HBG_REG_PHY_ID_ADDR); + specs->mdio_frequency = hbg_reg_read(priv, HBG_REG_MDIO_FREQ_ADDR); + specs->max_mtu = hbg_reg_read(priv, HBG_REG_MAX_MTU_ADDR); + specs->min_mtu = hbg_reg_read(priv, HBG_REG_MIN_MTU_ADDR); + specs->vlan_layers = hbg_reg_read(priv, HBG_REG_VLAN_LAYERS_ADDR); + specs->rx_fifo_num = hbg_reg_read(priv, HBG_REG_RX_FIFO_NUM_ADDR); + specs->tx_fifo_num = hbg_reg_read(priv, HBG_REG_TX_FIFO_NUM_ADDR); + mac_addr = hbg_reg_read64(priv, HBG_REG_MAC_ADDR_ADDR); + u64_to_ether_addr(mac_addr, (u8 *)specs->mac_addr.sa_data); + + if (!is_valid_ether_addr((u8 *)specs->mac_addr.sa_data)) + return -EADDRNOTAVAIL; + + return 0; +} + +int hbg_hw_init(struct hbg_priv *priv) +{ + return hbg_hw_dev_specs_init(priv); +} diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.h b/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.h new file mode 100644 index 000000000000..4a62d1a610ea --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (c) 2024 Hisilicon Limited. */ + +#ifndef __HBG_HW_H +#define __HBG_HW_H + +#include <linux/bitfield.h> +#include <linux/io-64-nonatomic-lo-hi.h> + +static inline u32 hbg_reg_read(struct hbg_priv *priv, u32 addr) +{ + return readl(priv->io_base + addr); +} + +static inline void hbg_reg_write(struct hbg_priv *priv, u32 addr, u32 value) +{ + writel(value, priv->io_base + addr); +} + +static inline u64 hbg_reg_read64(struct hbg_priv *priv, u32 addr) +{ + return lo_hi_readq(priv->io_base + addr); +} + +static inline void hbg_reg_write64(struct hbg_priv *priv, u32 addr, u64 value) +{ + lo_hi_writeq(value, priv->io_base + addr); +} + +int hbg_hw_event_notify(struct hbg_priv *priv, + enum hbg_hw_event_type event_type); +int hbg_hw_init(struct hbg_priv *priv); + +#endif diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c b/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c index 86027434d5e0..83f1bd1a950b 100644 --- a/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c @@ -5,6 +5,18 @@ #include <linux/netdevice.h> #include <linux/pci.h> #include "hbg_common.h" +#include "hbg_hw.h" + +static int hbg_init(struct hbg_priv *priv) +{ + int ret; + + ret = hbg_hw_event_notify(priv, HBG_HW_EVENT_INIT); + if (ret) + return ret; + + return hbg_hw_init(priv); +} static int hbg_pci_init(struct pci_dev *pdev) { @@ -55,6 +67,10 @@ static int hbg_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (ret) return ret; + ret = hbg_init(priv); + if (ret) + return ret; + netdev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS; ret = devm_register_netdev(dev, netdev); diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_reg.h b/drivers/net/ethernet/hisilicon/hibmcge/hbg_reg.h new file mode 100644 index 000000000000..77153f1132fd --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_reg.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (c) 2024 Hisilicon Limited. */ + +#ifndef __HBG_REG_H +#define __HBG_REG_H + +/* DEV SPEC */ +#define HBG_REG_SPEC_VALID_ADDR 0x0000 +#define HBG_REG_EVENT_REQ_ADDR 0x0004 +#define HBG_REG_MAC_ID_ADDR 0x0008 +#define HBG_REG_PHY_ID_ADDR 0x000C +#define HBG_REG_MAC_ADDR_ADDR 0x0010 +#define HBG_REG_MDIO_FREQ_ADDR 0x0024 +#define HBG_REG_MAX_MTU_ADDR 0x0028 +#define HBG_REG_MIN_MTU_ADDR 0x002C +#define HBG_REG_TX_FIFO_NUM_ADDR 0x0030 +#define HBG_REG_RX_FIFO_NUM_ADDR 0x0034 +#define HBG_REG_VLAN_LAYERS_ADDR 0x0038 + +#endif |