| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Zhangfei Gao | 5062 | 77.28% | 1 | 4.00% |
| Dongpo Li | 1418 | 21.65% | 4 | 16.00% |
| Philippe Reynes | 17 | 0.26% | 2 | 8.00% |
| Andrew Lunn | 7 | 0.11% | 1 | 4.00% |
| xiaojiangfeng | 6 | 0.09% | 1 | 4.00% |
| Rob Herring | 5 | 0.08% | 1 | 4.00% |
| ruanjinjie | 4 | 0.06% | 1 | 4.00% |
| Michael S. Tsirkin | 4 | 0.06% | 1 | 4.00% |
| Michael Walle | 3 | 0.05% | 1 | 4.00% |
| Florian Westphal | 3 | 0.05% | 1 | 4.00% |
| Matthew Wilcox | 3 | 0.05% | 1 | 4.00% |
| Eric Dumazet | 3 | 0.05% | 1 | 4.00% |
| Tom Lendacky | 3 | 0.05% | 1 | 4.00% |
| Arnd Bergmann | 3 | 0.05% | 1 | 4.00% |
| Jakub Kiciński | 2 | 0.03% | 2 | 8.00% |
| Thomas Gleixner | 2 | 0.03% | 1 | 4.00% |
| Uwe Kleine-König | 2 | 0.03% | 1 | 4.00% |
| Julia Lawall | 1 | 0.02% | 1 | 4.00% |
| Yue haibing | 1 | 0.02% | 1 | 4.00% |
| Luis R. Rodriguez | 1 | 0.02% | 1 | 4.00% |
| Total | 6550 | 25 |
// SPDX-License-Identifier: GPL-2.0-or-later /* Copyright (c) 2014 Linaro Ltd. * Copyright (c) 2014 Hisilicon Limited. */ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/etherdevice.h> #include <linux/platform_device.h> #include <linux/property.h> #include <linux/of.h> #include <linux/of_net.h> #include <linux/of_mdio.h> #include <linux/reset.h> #include <linux/clk.h> #include <linux/circ_buf.h> #define STATION_ADDR_LOW 0x0000 #define STATION_ADDR_HIGH 0x0004 #define MAC_DUPLEX_HALF_CTRL 0x0008 #define MAX_FRM_SIZE 0x003c #define PORT_MODE 0x0040 #define PORT_EN 0x0044 #define BITS_TX_EN BIT(2) #define BITS_RX_EN BIT(1) #define REC_FILT_CONTROL 0x0064 #define BIT_CRC_ERR_PASS BIT(5) #define BIT_PAUSE_FRM_PASS BIT(4) #define BIT_VLAN_DROP_EN BIT(3) #define BIT_BC_DROP_EN BIT(2) #define BIT_MC_MATCH_EN BIT(1) #define BIT_UC_MATCH_EN BIT(0) #define PORT_MC_ADDR_LOW 0x0068 #define PORT_MC_ADDR_HIGH 0x006C #define CF_CRC_STRIP 0x01b0 #define MODE_CHANGE_EN 0x01b4 #define BIT_MODE_CHANGE_EN BIT(0) #define COL_SLOT_TIME 0x01c0 #define RECV_CONTROL 0x01e0 #define BIT_STRIP_PAD_EN BIT(3) #define BIT_RUNT_PKT_EN BIT(4) #define CONTROL_WORD 0x0214 #define MDIO_SINGLE_CMD 0x03c0 #define MDIO_SINGLE_DATA 0x03c4 #define MDIO_CTRL 0x03cc #define MDIO_RDATA_STATUS 0x03d0 #define MDIO_START BIT(20) #define MDIO_R_VALID BIT(0) #define MDIO_READ (BIT(17) | MDIO_START) #define MDIO_WRITE (BIT(16) | MDIO_START) #define RX_FQ_START_ADDR 0x0500 #define RX_FQ_DEPTH 0x0504 #define RX_FQ_WR_ADDR 0x0508 #define RX_FQ_RD_ADDR 0x050c #define RX_FQ_VLDDESC_CNT 0x0510 #define RX_FQ_ALEMPTY_TH 0x0514 #define RX_FQ_REG_EN 0x0518 #define BITS_RX_FQ_START_ADDR_EN BIT(2) #define BITS_RX_FQ_DEPTH_EN BIT(1) #define BITS_RX_FQ_RD_ADDR_EN BIT(0) #define RX_FQ_ALFULL_TH 0x051c #define RX_BQ_START_ADDR 0x0520 #define RX_BQ_DEPTH 0x0524 #define RX_BQ_WR_ADDR 0x0528 #define RX_BQ_RD_ADDR 0x052c #define RX_BQ_FREE_DESC_CNT 0x0530 #define RX_BQ_ALEMPTY_TH 0x0534 #define RX_BQ_REG_EN 0x0538 #define BITS_RX_BQ_START_ADDR_EN BIT(2) #define BITS_RX_BQ_DEPTH_EN BIT(1) #define BITS_RX_BQ_WR_ADDR_EN BIT(0) #define RX_BQ_ALFULL_TH 0x053c #define TX_BQ_START_ADDR 0x0580 #define TX_BQ_DEPTH 0x0584 #define TX_BQ_WR_ADDR 0x0588 #define TX_BQ_RD_ADDR 0x058c #define TX_BQ_VLDDESC_CNT 0x0590 #define TX_BQ_ALEMPTY_TH 0x0594 #define TX_BQ_REG_EN 0x0598 #define BITS_TX_BQ_START_ADDR_EN BIT(2) #define BITS_TX_BQ_DEPTH_EN BIT(1) #define BITS_TX_BQ_RD_ADDR_EN BIT(0) #define TX_BQ_ALFULL_TH 0x059c #define TX_RQ_START_ADDR 0x05a0 #define TX_RQ_DEPTH 0x05a4 #define TX_RQ_WR_ADDR 0x05a8 #define TX_RQ_RD_ADDR 0x05ac #define TX_RQ_FREE_DESC_CNT 0x05b0 #define TX_RQ_ALEMPTY_TH 0x05b4 #define TX_RQ_REG_EN 0x05b8 #define BITS_TX_RQ_START_ADDR_EN BIT(2) #define BITS_TX_RQ_DEPTH_EN BIT(1) #define BITS_TX_RQ_WR_ADDR_EN BIT(0) #define TX_RQ_ALFULL_TH 0x05bc #define RAW_PMU_INT 0x05c0 #define ENA_PMU_INT 0x05c4 #define STATUS_PMU_INT 0x05c8 #define MAC_FIFO_ERR_IN BIT(30) #define TX_RQ_IN_TIMEOUT_INT BIT(29) #define RX_BQ_IN_TIMEOUT_INT BIT(28) #define TXOUTCFF_FULL_INT BIT(27) #define TXOUTCFF_EMPTY_INT BIT(26) #define TXCFF_FULL_INT BIT(25) #define TXCFF_EMPTY_INT BIT(24) #define RXOUTCFF_FULL_INT BIT(23) #define RXOUTCFF_EMPTY_INT BIT(22) #define RXCFF_FULL_INT BIT(21) #define RXCFF_EMPTY_INT BIT(20) #define TX_RQ_IN_INT BIT(19) #define TX_BQ_OUT_INT BIT(18) #define RX_BQ_IN_INT BIT(17) #define RX_FQ_OUT_INT BIT(16) #define TX_RQ_EMPTY_INT BIT(15) #define TX_RQ_FULL_INT BIT(14) #define TX_RQ_ALEMPTY_INT BIT(13) #define TX_RQ_ALFULL_INT BIT(12) #define TX_BQ_EMPTY_INT BIT(11) #define TX_BQ_FULL_INT BIT(10) #define TX_BQ_ALEMPTY_INT BIT(9) #define TX_BQ_ALFULL_INT BIT(8) #define RX_BQ_EMPTY_INT BIT(7) #define RX_BQ_FULL_INT BIT(6) #define RX_BQ_ALEMPTY_INT BIT(5) #define RX_BQ_ALFULL_INT BIT(4) #define RX_FQ_EMPTY_INT BIT(3) #define RX_FQ_FULL_INT BIT(2) #define RX_FQ_ALEMPTY_INT BIT(1) #define RX_FQ_ALFULL_INT BIT(0) #define DEF_INT_MASK (RX_BQ_IN_INT | RX_BQ_IN_TIMEOUT_INT | \ TX_RQ_IN_INT | TX_RQ_IN_TIMEOUT_INT) #define DESC_WR_RD_ENA 0x05cc #define IN_QUEUE_TH 0x05d8 #define OUT_QUEUE_TH 0x05dc #define QUEUE_TX_BQ_SHIFT 16 #define RX_BQ_IN_TIMEOUT_TH 0x05e0 #define TX_RQ_IN_TIMEOUT_TH 0x05e4 #define STOP_CMD 0x05e8 #define BITS_TX_STOP BIT(1) #define BITS_RX_STOP BIT(0) #define FLUSH_CMD 0x05eC #define BITS_TX_FLUSH_CMD BIT(5) #define BITS_RX_FLUSH_CMD BIT(4) #define BITS_TX_FLUSH_FLAG_DOWN BIT(3) #define BITS_TX_FLUSH_FLAG_UP BIT(2) #define BITS_RX_FLUSH_FLAG_DOWN BIT(1) #define BITS_RX_FLUSH_FLAG_UP BIT(0) #define RX_CFF_NUM_REG 0x05f0 #define PMU_FSM_REG 0x05f8 #define RX_FIFO_PKT_IN_NUM 0x05fc #define RX_FIFO_PKT_OUT_NUM 0x0600 #define RGMII_SPEED_1000 0x2c #define RGMII_SPEED_100 0x2f #define RGMII_SPEED_10 0x2d #define MII_SPEED_100 0x0f #define MII_SPEED_10 0x0d #define GMAC_SPEED_1000 0x05 #define GMAC_SPEED_100 0x01 #define GMAC_SPEED_10 0x00 #define GMAC_FULL_DUPLEX BIT(4) #define RX_BQ_INT_THRESHOLD 0x01 #define TX_RQ_INT_THRESHOLD 0x01 #define RX_BQ_IN_TIMEOUT 0x10000 #define TX_RQ_IN_TIMEOUT 0x50000 #define MAC_MAX_FRAME_SIZE 1600 #define DESC_SIZE 32 #define RX_DESC_NUM 1024 #define TX_DESC_NUM 1024 #define DESC_VLD_FREE 0 #define DESC_VLD_BUSY 0x80000000 #define DESC_FL_MID 0 #define DESC_FL_LAST 0x20000000 #define DESC_FL_FIRST 0x40000000 #define DESC_FL_FULL 0x60000000 #define DESC_DATA_LEN_OFF 16 #define DESC_BUFF_LEN_OFF 0 #define DESC_DATA_MASK 0x7ff #define DESC_SG BIT(30) #define DESC_FRAGS_NUM_OFF 11 /* DMA descriptor ring helpers */ #define dma_ring_incr(n, s) (((n) + 1) & ((s) - 1)) #define dma_cnt(n) ((n) >> 5) #define dma_byte(n) ((n) << 5) #define HW_CAP_TSO BIT(0) #define GEMAC_V1 0 #define GEMAC_V2 (GEMAC_V1 | HW_CAP_TSO) #define HAS_CAP_TSO(hw_cap) ((hw_cap) & HW_CAP_TSO) #define PHY_RESET_DELAYS_PROPERTY "hisilicon,phy-reset-delays-us" enum phy_reset_delays { PRE_DELAY, PULSE, POST_DELAY, DELAYS_NUM, }; struct hix5hd2_desc { __le32 buff_addr; __le32 cmd; } __aligned(32); struct hix5hd2_desc_sw { struct hix5hd2_desc *desc; dma_addr_t phys_addr; unsigned int count; unsigned int size; }; struct hix5hd2_sg_desc_ring { struct sg_desc *desc; dma_addr_t phys_addr; }; struct frags_info { __le32 addr; __le32 size; }; /* hardware supported max skb frags num */ #define SG_MAX_SKB_FRAGS 17 struct sg_desc { __le32 total_len; __le32 resvd0; __le32 linear_addr; __le32 linear_len; /* reserve one more frags for memory alignment */ struct frags_info frags[SG_MAX_SKB_FRAGS + 1]; }; #define QUEUE_NUMS 4 struct hix5hd2_priv { struct hix5hd2_desc_sw pool[QUEUE_NUMS]; #define rx_fq pool[0] #define rx_bq pool[1] #define tx_bq pool[2] #define tx_rq pool[3] struct hix5hd2_sg_desc_ring tx_ring; void __iomem *base; void __iomem *ctrl_base; struct sk_buff *tx_skb[TX_DESC_NUM]; struct sk_buff *rx_skb[RX_DESC_NUM]; struct device *dev; struct net_device *netdev; struct device_node *phy_node; phy_interface_t phy_mode; unsigned long hw_cap; unsigned int speed; unsigned int duplex; struct clk *mac_core_clk; struct clk *mac_ifc_clk; struct reset_control *mac_core_rst; struct reset_control *mac_ifc_rst; struct reset_control *phy_rst; u32 phy_reset_delays[DELAYS_NUM]; struct mii_bus *bus; struct napi_struct napi; struct work_struct tx_timeout_task; }; static inline void hix5hd2_mac_interface_reset(struct hix5hd2_priv *priv) { if (!priv->mac_ifc_rst) return; reset_control_assert(priv->mac_ifc_rst); reset_control_deassert(priv->mac_ifc_rst); } static void hix5hd2_config_port(struct net_device *dev, u32 speed, u32 duplex) { struct hix5hd2_priv *priv = netdev_priv(dev); u32 val; priv->speed = speed; priv->duplex = duplex; switch (priv->phy_mode) { case PHY_INTERFACE_MODE_RGMII: if (speed == SPEED_1000) val = RGMII_SPEED_1000; else if (speed == SPEED_100) val = RGMII_SPEED_100; else val = RGMII_SPEED_10; break; case PHY_INTERFACE_MODE_MII: if (speed == SPEED_100) val = MII_SPEED_100; else val = MII_SPEED_10; break; default: netdev_warn(dev, "not supported mode\n"); val = MII_SPEED_10; break; } if (duplex) val |= GMAC_FULL_DUPLEX; writel_relaxed(val, priv->ctrl_base); hix5hd2_mac_interface_reset(priv); writel_relaxed(BIT_MODE_CHANGE_EN, priv->base + MODE_CHANGE_EN); if (speed == SPEED_1000) val = GMAC_SPEED_1000; else if (speed == SPEED_100) val = GMAC_SPEED_100; else val = GMAC_SPEED_10; writel_relaxed(val, priv->base + PORT_MODE); writel_relaxed(0, priv->base + MODE_CHANGE_EN); writel_relaxed(duplex, priv->base + MAC_DUPLEX_HALF_CTRL); } static void hix5hd2_set_desc_depth(struct hix5hd2_priv *priv, int rx, int tx) { writel_relaxed(BITS_RX_FQ_DEPTH_EN, priv->base + RX_FQ_REG_EN); writel_relaxed(rx << 3, priv->base + RX_FQ_DEPTH); writel_relaxed(0, priv->base + RX_FQ_REG_EN); writel_relaxed(BITS_RX_BQ_DEPTH_EN, priv->base + RX_BQ_REG_EN); writel_relaxed(rx << 3, priv->base + RX_BQ_DEPTH); writel_relaxed(0, priv->base + RX_BQ_REG_EN); writel_relaxed(BITS_TX_BQ_DEPTH_EN, priv->base + TX_BQ_REG_EN); writel_relaxed(tx << 3, priv->base + TX_BQ_DEPTH); writel_relaxed(0, priv->base + TX_BQ_REG_EN); writel_relaxed(BITS_TX_RQ_DEPTH_EN, priv->base + TX_RQ_REG_EN); writel_relaxed(tx << 3, priv->base + TX_RQ_DEPTH); writel_relaxed(0, priv->base + TX_RQ_REG_EN); } static void hix5hd2_set_rx_fq(struct hix5hd2_priv *priv, dma_addr_t phy_addr) { writel_relaxed(BITS_RX_FQ_START_ADDR_EN, priv->base + RX_FQ_REG_EN); writel_relaxed(phy_addr, priv->base + RX_FQ_START_ADDR); writel_relaxed(0, priv->base + RX_FQ_REG_EN); } static void hix5hd2_set_rx_bq(struct hix5hd2_priv *priv, dma_addr_t phy_addr) { writel_relaxed(BITS_RX_BQ_START_ADDR_EN, priv->base + RX_BQ_REG_EN); writel_relaxed(phy_addr, priv->base + RX_BQ_START_ADDR); writel_relaxed(0, priv->base + RX_BQ_REG_EN); } static void hix5hd2_set_tx_bq(struct hix5hd2_priv *priv, dma_addr_t phy_addr) { writel_relaxed(BITS_TX_BQ_START_ADDR_EN, priv->base + TX_BQ_REG_EN); writel_relaxed(phy_addr, priv->base + TX_BQ_START_ADDR); writel_relaxed(0, priv->base + TX_BQ_REG_EN); } static void hix5hd2_set_tx_rq(struct hix5hd2_priv *priv, dma_addr_t phy_addr) { writel_relaxed(BITS_TX_RQ_START_ADDR_EN, priv->base + TX_RQ_REG_EN); writel_relaxed(phy_addr, priv->base + TX_RQ_START_ADDR); writel_relaxed(0, priv->base + TX_RQ_REG_EN); } static void hix5hd2_set_desc_addr(struct hix5hd2_priv *priv) { hix5hd2_set_rx_fq(priv, priv->rx_fq.phys_addr); hix5hd2_set_rx_bq(priv, priv->rx_bq.phys_addr); hix5hd2_set_tx_rq(priv, priv->tx_rq.phys_addr); hix5hd2_set_tx_bq(priv, priv->tx_bq.phys_addr); } static void hix5hd2_hw_init(struct hix5hd2_priv *priv) { u32 val; /* disable and clear all interrupts */ writel_relaxed(0, priv->base + ENA_PMU_INT); writel_relaxed(~0, priv->base + RAW_PMU_INT); writel_relaxed(BIT_CRC_ERR_PASS, priv->base + REC_FILT_CONTROL); writel_relaxed(MAC_MAX_FRAME_SIZE, priv->base + CONTROL_WORD); writel_relaxed(0, priv->base + COL_SLOT_TIME); val = RX_BQ_INT_THRESHOLD | TX_RQ_INT_THRESHOLD << QUEUE_TX_BQ_SHIFT; writel_relaxed(val, priv->base + IN_QUEUE_TH); writel_relaxed(RX_BQ_IN_TIMEOUT, priv->base + RX_BQ_IN_TIMEOUT_TH); writel_relaxed(TX_RQ_IN_TIMEOUT, priv->base + TX_RQ_IN_TIMEOUT_TH); hix5hd2_set_desc_depth(priv, RX_DESC_NUM, TX_DESC_NUM); hix5hd2_set_desc_addr(priv); } static void hix5hd2_irq_enable(struct hix5hd2_priv *priv) { writel_relaxed(DEF_INT_MASK, priv->base + ENA_PMU_INT); } static void hix5hd2_irq_disable(struct hix5hd2_priv *priv) { writel_relaxed(0, priv->base + ENA_PMU_INT); } static void hix5hd2_port_enable(struct hix5hd2_priv *priv) { writel_relaxed(0xf, priv->base + DESC_WR_RD_ENA); writel_relaxed(BITS_RX_EN | BITS_TX_EN, priv->base + PORT_EN); } static void hix5hd2_port_disable(struct hix5hd2_priv *priv) { writel_relaxed(~(u32)(BITS_RX_EN | BITS_TX_EN), priv->base + PORT_EN); writel_relaxed(0, priv->base + DESC_WR_RD_ENA); } static void hix5hd2_hw_set_mac_addr(struct net_device *dev) { struct hix5hd2_priv *priv = netdev_priv(dev); const unsigned char *mac = dev->dev_addr; u32 val; val = mac[1] | (mac[0] << 8); writel_relaxed(val, priv->base + STATION_ADDR_HIGH); val = mac[5] | (mac[4] << 8) | (mac[3] << 16) | (mac[2] << 24); writel_relaxed(val, priv->base + STATION_ADDR_LOW); } static int hix5hd2_net_set_mac_address(struct net_device *dev, void *p) { int ret; ret = eth_mac_addr(dev, p); if (!ret) hix5hd2_hw_set_mac_addr(dev); return ret; } static void hix5hd2_adjust_link(struct net_device *dev) { struct hix5hd2_priv *priv = netdev_priv(dev); struct phy_device *phy = dev->phydev; if ((priv->speed != phy->speed) || (priv->duplex != phy->duplex)) { hix5hd2_config_port(dev, phy->speed, phy->duplex); phy_print_status(phy); } } static void hix5hd2_rx_refill(struct hix5hd2_priv *priv) { struct hix5hd2_desc *desc; struct sk_buff *skb; u32 start, end, num, pos, i; u32 len = MAC_MAX_FRAME_SIZE; dma_addr_t addr; /* software write pointer */ start = dma_cnt(readl_relaxed(priv->base + RX_FQ_WR_ADDR)); /* logic read pointer */ end = dma_cnt(readl_relaxed(priv->base + RX_FQ_RD_ADDR)); num = CIRC_SPACE(start, end, RX_DESC_NUM); for (i = 0, pos = start; i < num; i++) { if (priv->rx_skb[pos]) { break; } else { skb = netdev_alloc_skb_ip_align(priv->netdev, len); if (unlikely(skb == NULL)) break; } addr = dma_map_single(priv->dev, skb->data, len, DMA_FROM_DEVICE); if (dma_mapping_error(priv->dev, addr)) { dev_kfree_skb_any(skb); break; } desc = priv->rx_fq.desc + pos; desc->buff_addr = cpu_to_le32(addr); priv->rx_skb[pos] = skb; desc->cmd = cpu_to_le32(DESC_VLD_FREE | (len - 1) << DESC_BUFF_LEN_OFF); pos = dma_ring_incr(pos, RX_DESC_NUM); } /* ensure desc updated */ wmb(); if (pos != start) writel_relaxed(dma_byte(pos), priv->base + RX_FQ_WR_ADDR); } static int hix5hd2_rx(struct net_device *dev, int limit) { struct hix5hd2_priv *priv = netdev_priv(dev); struct sk_buff *skb; struct hix5hd2_desc *desc; dma_addr_t addr; u32 start, end, num, pos, i, len; /* software read pointer */ start = dma_cnt(readl_relaxed(priv->base + RX_BQ_RD_ADDR)); /* logic write pointer */ end = dma_cnt(readl_relaxed(priv->base + RX_BQ_WR_ADDR)); num = CIRC_CNT(end, start, RX_DESC_NUM); if (num > limit) num = limit; /* ensure get updated desc */ rmb(); for (i = 0, pos = start; i < num; i++) { skb = priv->rx_skb[pos]; if (unlikely(!skb)) { netdev_err(dev, "inconsistent rx_skb\n"); break; } priv->rx_skb[pos] = NULL; desc = priv->rx_bq.desc + pos; len = (le32_to_cpu(desc->cmd) >> DESC_DATA_LEN_OFF) & DESC_DATA_MASK; addr = le32_to_cpu(desc->buff_addr); dma_unmap_single(priv->dev, addr, MAC_MAX_FRAME_SIZE, DMA_FROM_DEVICE); skb_put(skb, len); if (skb->len > MAC_MAX_FRAME_SIZE) { netdev_err(dev, "rcv len err, len = %d\n", skb->len); dev->stats.rx_errors++; dev->stats.rx_length_errors++; dev_kfree_skb_any(skb); goto next; } skb->protocol = eth_type_trans(skb, dev); napi_gro_receive(&priv->napi, skb); dev->stats.rx_packets++; dev->stats.rx_bytes += len; next: pos = dma_ring_incr(pos, RX_DESC_NUM); } if (pos != start) writel_relaxed(dma_byte(pos), priv->base + RX_BQ_RD_ADDR); hix5hd2_rx_refill(priv); return num; } static void hix5hd2_clean_sg_desc(struct hix5hd2_priv *priv, struct sk_buff *skb, u32 pos) { struct sg_desc *desc; dma_addr_t addr; u32 len; int i; desc = priv->tx_ring.desc + pos; addr = le32_to_cpu(desc->linear_addr); len = le32_to_cpu(desc->linear_len); dma_unmap_single(priv->dev, addr, len, DMA_TO_DEVICE); for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { addr = le32_to_cpu(desc->frags[i].addr); len = le32_to_cpu(desc->frags[i].size); dma_unmap_page(priv->dev, addr, len, DMA_TO_DEVICE); } } static void hix5hd2_xmit_reclaim(struct net_device *dev) { struct sk_buff *skb; struct hix5hd2_desc *desc; struct hix5hd2_priv *priv = netdev_priv(dev); unsigned int bytes_compl = 0, pkts_compl = 0; u32 start, end, num, pos, i; dma_addr_t addr; netif_tx_lock(dev); /* software read */ start = dma_cnt(readl_relaxed(priv->base + TX_RQ_RD_ADDR)); /* logic write */ end = dma_cnt(readl_relaxed(priv->base + TX_RQ_WR_ADDR)); num = CIRC_CNT(end, start, TX_DESC_NUM); for (i = 0, pos = start; i < num; i++) { skb = priv->tx_skb[pos]; if (unlikely(!skb)) { netdev_err(dev, "inconsistent tx_skb\n"); break; } pkts_compl++; bytes_compl += skb->len; desc = priv->tx_rq.desc + pos; if (skb_shinfo(skb)->nr_frags) { hix5hd2_clean_sg_desc(priv, skb, pos); } else { addr = le32_to_cpu(desc->buff_addr); dma_unmap_single(priv->dev, addr, skb->len, DMA_TO_DEVICE); } priv->tx_skb[pos] = NULL; dev_consume_skb_any(skb); pos = dma_ring_incr(pos, TX_DESC_NUM); } if (pos != start) writel_relaxed(dma_byte(pos), priv->base + TX_RQ_RD_ADDR); netif_tx_unlock(dev); if (pkts_compl || bytes_compl) netdev_completed_queue(dev, pkts_compl, bytes_compl); if (unlikely(netif_queue_stopped(priv->netdev)) && pkts_compl) netif_wake_queue(priv->netdev); } static int hix5hd2_poll(struct napi_struct *napi, int budget) { struct hix5hd2_priv *priv = container_of(napi, struct hix5hd2_priv, napi); struct net_device *dev = priv->netdev; int work_done = 0, task = budget; int ints, num; do { hix5hd2_xmit_reclaim(dev); num = hix5hd2_rx(dev, task); work_done += num; task -= num; if ((work_done >= budget) || (num == 0)) break; ints = readl_relaxed(priv->base + RAW_PMU_INT); writel_relaxed(ints, priv->base + RAW_PMU_INT); } while (ints & DEF_INT_MASK); if (work_done < budget) { napi_complete_done(napi, work_done); hix5hd2_irq_enable(priv); } return work_done; } static irqreturn_t hix5hd2_interrupt(int irq, void *dev_id) { struct net_device *dev = (struct net_device *)dev_id; struct hix5hd2_priv *priv = netdev_priv(dev); int ints = readl_relaxed(priv->base + RAW_PMU_INT); writel_relaxed(ints, priv->base + RAW_PMU_INT); if (likely(ints & DEF_INT_MASK)) { hix5hd2_irq_disable(priv); napi_schedule(&priv->napi); } return IRQ_HANDLED; } static u32 hix5hd2_get_desc_cmd(struct sk_buff *skb, unsigned long hw_cap) { u32 cmd = 0; if (HAS_CAP_TSO(hw_cap)) { if (skb_shinfo(skb)->nr_frags) cmd |= DESC_SG; cmd |= skb_shinfo(skb)->nr_frags << DESC_FRAGS_NUM_OFF; } else { cmd |= DESC_FL_FULL | ((skb->len & DESC_DATA_MASK) << DESC_BUFF_LEN_OFF); } cmd |= (skb->len & DESC_DATA_MASK) << DESC_DATA_LEN_OFF; cmd |= DESC_VLD_BUSY; return cmd; } static int hix5hd2_fill_sg_desc(struct hix5hd2_priv *priv, struct sk_buff *skb, u32 pos) { struct sg_desc *desc; dma_addr_t addr; int ret; int i; desc = priv->tx_ring.desc + pos; desc->total_len = cpu_to_le32(skb->len); addr = dma_map_single(priv->dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE); if (unlikely(dma_mapping_error(priv->dev, addr))) return -EINVAL; desc->linear_addr = cpu_to_le32(addr); desc->linear_len = cpu_to_le32(skb_headlen(skb)); for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; int len = skb_frag_size(frag); addr = skb_frag_dma_map(priv->dev, frag, 0, len, DMA_TO_DEVICE); ret = dma_mapping_error(priv->dev, addr); if (unlikely(ret)) return -EINVAL; desc->frags[i].addr = cpu_to_le32(addr); desc->frags[i].size = cpu_to_le32(len); } return 0; } static netdev_tx_t hix5hd2_net_xmit(struct sk_buff *skb, struct net_device *dev) { struct hix5hd2_priv *priv = netdev_priv(dev); struct hix5hd2_desc *desc; dma_addr_t addr; u32 pos; u32 cmd; int ret; /* software write pointer */ pos = dma_cnt(readl_relaxed(priv->base + TX_BQ_WR_ADDR)); if (unlikely(priv->tx_skb[pos])) { dev->stats.tx_dropped++; dev->stats.tx_fifo_errors++; netif_stop_queue(dev); return NETDEV_TX_BUSY; } desc = priv->tx_bq.desc + pos; cmd = hix5hd2_get_desc_cmd(skb, priv->hw_cap); desc->cmd = cpu_to_le32(cmd); if (skb_shinfo(skb)->nr_frags) { ret = hix5hd2_fill_sg_desc(priv, skb, pos); if (unlikely(ret)) { dev_kfree_skb_any(skb); dev->stats.tx_dropped++; return NETDEV_TX_OK; } addr = priv->tx_ring.phys_addr + pos * sizeof(struct sg_desc); } else { addr = dma_map_single(priv->dev, skb->data, skb->len, DMA_TO_DEVICE); if (unlikely(dma_mapping_error(priv->dev, addr))) { dev_kfree_skb_any(skb); dev->stats.tx_dropped++; return NETDEV_TX_OK; } } desc->buff_addr = cpu_to_le32(addr); priv->tx_skb[pos] = skb; /* ensure desc updated */ wmb(); pos = dma_ring_incr(pos, TX_DESC_NUM); writel_relaxed(dma_byte(pos), priv->base + TX_BQ_WR_ADDR); netif_trans_update(dev); dev->stats.tx_packets++; dev->stats.tx_bytes += skb->len; netdev_sent_queue(dev, skb->len); return NETDEV_TX_OK; } static void hix5hd2_free_dma_desc_rings(struct hix5hd2_priv *priv) { struct hix5hd2_desc *desc; dma_addr_t addr; int i; for (i = 0; i < RX_DESC_NUM; i++) { struct sk_buff *skb = priv->rx_skb[i]; if (skb == NULL) continue; desc = priv->rx_fq.desc + i; addr = le32_to_cpu(desc->buff_addr); dma_unmap_single(priv->dev, addr, MAC_MAX_FRAME_SIZE, DMA_FROM_DEVICE); dev_kfree_skb_any(skb); priv->rx_skb[i] = NULL; } for (i = 0; i < TX_DESC_NUM; i++) { struct sk_buff *skb = priv->tx_skb[i]; if (skb == NULL) continue; desc = priv->tx_rq.desc + i; addr = le32_to_cpu(desc->buff_addr); dma_unmap_single(priv->dev, addr, skb->len, DMA_TO_DEVICE); dev_kfree_skb_any(skb); priv->tx_skb[i] = NULL; } } static int hix5hd2_net_open(struct net_device *dev) { struct hix5hd2_priv *priv = netdev_priv(dev); struct phy_device *phy; int ret; ret = clk_prepare_enable(priv->mac_core_clk); if (ret < 0) { netdev_err(dev, "failed to enable mac core clk %d\n", ret); return ret; } ret = clk_prepare_enable(priv->mac_ifc_clk); if (ret < 0) { clk_disable_unprepare(priv->mac_core_clk); netdev_err(dev, "failed to enable mac ifc clk %d\n", ret); return ret; } phy = of_phy_connect(dev, priv->phy_node, &hix5hd2_adjust_link, 0, priv->phy_mode); if (!phy) { clk_disable_unprepare(priv->mac_ifc_clk); clk_disable_unprepare(priv->mac_core_clk); return -ENODEV; } phy_start(phy); hix5hd2_hw_init(priv); hix5hd2_rx_refill(priv); netdev_reset_queue(dev); netif_start_queue(dev); napi_enable(&priv->napi); hix5hd2_port_enable(priv); hix5hd2_irq_enable(priv); return 0; } static int hix5hd2_net_close(struct net_device *dev) { struct hix5hd2_priv *priv = netdev_priv(dev); hix5hd2_port_disable(priv); hix5hd2_irq_disable(priv); napi_disable(&priv->napi); netif_stop_queue(dev); hix5hd2_free_dma_desc_rings(priv); if (dev->phydev) { phy_stop(dev->phydev); phy_disconnect(dev->phydev); } clk_disable_unprepare(priv->mac_ifc_clk); clk_disable_unprepare(priv->mac_core_clk); return 0; } static void hix5hd2_tx_timeout_task(struct work_struct *work) { struct hix5hd2_priv *priv; priv = container_of(work, struct hix5hd2_priv, tx_timeout_task); hix5hd2_net_close(priv->netdev); hix5hd2_net_open(priv->netdev); } static void hix5hd2_net_timeout(struct net_device *dev, unsigned int txqueue) { struct hix5hd2_priv *priv = netdev_priv(dev); schedule_work(&priv->tx_timeout_task); } static const struct net_device_ops hix5hd2_netdev_ops = { .ndo_open = hix5hd2_net_open, .ndo_stop = hix5hd2_net_close, .ndo_start_xmit = hix5hd2_net_xmit, .ndo_tx_timeout = hix5hd2_net_timeout, .ndo_set_mac_address = hix5hd2_net_set_mac_address, }; static const struct ethtool_ops hix5hd2_ethtools_ops = { .get_link = ethtool_op_get_link, .get_link_ksettings = phy_ethtool_get_link_ksettings, .set_link_ksettings = phy_ethtool_set_link_ksettings, }; static int hix5hd2_mdio_wait_ready(struct mii_bus *bus) { struct hix5hd2_priv *priv = bus->priv; void __iomem *base = priv->base; int i, timeout = 10000; for (i = 0; readl_relaxed(base + MDIO_SINGLE_CMD) & MDIO_START; i++) { if (i == timeout) return -ETIMEDOUT; usleep_range(10, 20); } return 0; } static int hix5hd2_mdio_read(struct mii_bus *bus, int phy, int reg) { struct hix5hd2_priv *priv = bus->priv; void __iomem *base = priv->base; int val, ret; ret = hix5hd2_mdio_wait_ready(bus); if (ret < 0) goto out; writel_relaxed(MDIO_READ | phy << 8 | reg, base + MDIO_SINGLE_CMD); ret = hix5hd2_mdio_wait_ready(bus); if (ret < 0) goto out; val = readl_relaxed(base + MDIO_RDATA_STATUS); if (val & MDIO_R_VALID) { dev_err(bus->parent, "SMI bus read not valid\n"); ret = -ENODEV; goto out; } val = readl_relaxed(priv->base + MDIO_SINGLE_DATA); ret = (val >> 16) & 0xFFFF; out: return ret; } static int hix5hd2_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val) { struct hix5hd2_priv *priv = bus->priv; void __iomem *base = priv->base; int ret; ret = hix5hd2_mdio_wait_ready(bus); if (ret < 0) goto out; writel_relaxed(val, base + MDIO_SINGLE_DATA); writel_relaxed(MDIO_WRITE | phy << 8 | reg, base + MDIO_SINGLE_CMD); ret = hix5hd2_mdio_wait_ready(bus); out: return ret; } static void hix5hd2_destroy_hw_desc_queue(struct hix5hd2_priv *priv) { int i; for (i = 0; i < QUEUE_NUMS; i++) { if (priv->pool[i].desc) { dma_free_coherent(priv->dev, priv->pool[i].size, priv->pool[i].desc, priv->pool[i].phys_addr); priv->pool[i].desc = NULL; } } } static int hix5hd2_init_hw_desc_queue(struct hix5hd2_priv *priv) { struct device *dev = priv->dev; struct hix5hd2_desc *virt_addr; dma_addr_t phys_addr; int size, i; priv->rx_fq.count = RX_DESC_NUM; priv->rx_bq.count = RX_DESC_NUM; priv->tx_bq.count = TX_DESC_NUM; priv->tx_rq.count = TX_DESC_NUM; for (i = 0; i < QUEUE_NUMS; i++) { size = priv->pool[i].count * sizeof(struct hix5hd2_desc); virt_addr = dma_alloc_coherent(dev, size, &phys_addr, GFP_KERNEL); if (virt_addr == NULL) goto error_free_pool; priv->pool[i].size = size; priv->pool[i].desc = virt_addr; priv->pool[i].phys_addr = phys_addr; } return 0; error_free_pool: hix5hd2_destroy_hw_desc_queue(priv); return -ENOMEM; } static int hix5hd2_init_sg_desc_queue(struct hix5hd2_priv *priv) { struct sg_desc *desc; dma_addr_t phys_addr; desc = dma_alloc_coherent(priv->dev, TX_DESC_NUM * sizeof(struct sg_desc), &phys_addr, GFP_KERNEL); if (!desc) return -ENOMEM; priv->tx_ring.desc = desc; priv->tx_ring.phys_addr = phys_addr; return 0; } static void hix5hd2_destroy_sg_desc_queue(struct hix5hd2_priv *priv) { if (priv->tx_ring.desc) { dma_free_coherent(priv->dev, TX_DESC_NUM * sizeof(struct sg_desc), priv->tx_ring.desc, priv->tx_ring.phys_addr); priv->tx_ring.desc = NULL; } } static inline void hix5hd2_mac_core_reset(struct hix5hd2_priv *priv) { if (!priv->mac_core_rst) return; reset_control_assert(priv->mac_core_rst); reset_control_deassert(priv->mac_core_rst); } static void hix5hd2_sleep_us(u32 time_us) { u32 time_ms; if (!time_us) return; time_ms = DIV_ROUND_UP(time_us, 1000); if (time_ms < 20) usleep_range(time_us, time_us + 500); else msleep(time_ms); } static void hix5hd2_phy_reset(struct hix5hd2_priv *priv) { /* To make sure PHY hardware reset success, * we must keep PHY in deassert state first and * then complete the hardware reset operation */ reset_control_deassert(priv->phy_rst); hix5hd2_sleep_us(priv->phy_reset_delays[PRE_DELAY]); reset_control_assert(priv->phy_rst); /* delay some time to ensure reset ok, * this depends on PHY hardware feature */ hix5hd2_sleep_us(priv->phy_reset_delays[PULSE]); reset_control_deassert(priv->phy_rst); /* delay some time to ensure later MDIO access */ hix5hd2_sleep_us(priv->phy_reset_delays[POST_DELAY]); } static const struct of_device_id hix5hd2_of_match[]; static int hix5hd2_dev_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; struct net_device *ndev; struct hix5hd2_priv *priv; struct mii_bus *bus; int ret; ndev = alloc_etherdev(sizeof(struct hix5hd2_priv)); if (!ndev) return -ENOMEM; platform_set_drvdata(pdev, ndev); priv = netdev_priv(ndev); priv->dev = dev; priv->netdev = ndev; priv->hw_cap = (unsigned long)device_get_match_data(dev); priv->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(priv->base)) { ret = PTR_ERR(priv->base); goto out_free_netdev; } priv->ctrl_base = devm_platform_ioremap_resource(pdev, 1); if (IS_ERR(priv->ctrl_base)) { ret = PTR_ERR(priv->ctrl_base); goto out_free_netdev; } priv->mac_core_clk = devm_clk_get(&pdev->dev, "mac_core"); if (IS_ERR(priv->mac_core_clk)) { netdev_err(ndev, "failed to get mac core clk\n"); ret = -ENODEV; goto out_free_netdev; } ret = clk_prepare_enable(priv->mac_core_clk); if (ret < 0) { netdev_err(ndev, "failed to enable mac core clk %d\n", ret); goto out_free_netdev; } priv->mac_ifc_clk = devm_clk_get(&pdev->dev, "mac_ifc"); if (IS_ERR(priv->mac_ifc_clk)) priv->mac_ifc_clk = NULL; ret = clk_prepare_enable(priv->mac_ifc_clk); if (ret < 0) { netdev_err(ndev, "failed to enable mac ifc clk %d\n", ret); goto out_disable_mac_core_clk; } priv->mac_core_rst = devm_reset_control_get(dev, "mac_core"); if (IS_ERR(priv->mac_core_rst)) priv->mac_core_rst = NULL; hix5hd2_mac_core_reset(priv); priv->mac_ifc_rst = devm_reset_control_get(dev, "mac_ifc"); if (IS_ERR(priv->mac_ifc_rst)) priv->mac_ifc_rst = NULL; priv->phy_rst = devm_reset_control_get(dev, "phy"); if (IS_ERR(priv->phy_rst)) { priv->phy_rst = NULL; } else { ret = of_property_read_u32_array(node, PHY_RESET_DELAYS_PROPERTY, priv->phy_reset_delays, DELAYS_NUM); if (ret) goto out_disable_clk; hix5hd2_phy_reset(priv); } bus = mdiobus_alloc(); if (bus == NULL) { ret = -ENOMEM; goto out_disable_clk; } bus->priv = priv; bus->name = "hix5hd2_mii_bus"; bus->read = hix5hd2_mdio_read; bus->write = hix5hd2_mdio_write; bus->parent = &pdev->dev; snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(&pdev->dev)); priv->bus = bus; ret = of_mdiobus_register(bus, node); if (ret) goto err_free_mdio; ret = of_get_phy_mode(node, &priv->phy_mode); if (ret) { netdev_err(ndev, "not find phy-mode\n"); goto err_mdiobus; } priv->phy_node = of_parse_phandle(node, "phy-handle", 0); if (!priv->phy_node) { netdev_err(ndev, "not find phy-handle\n"); ret = -EINVAL; goto err_mdiobus; } ndev->irq = platform_get_irq(pdev, 0); if (ndev->irq < 0) { ret = ndev->irq; goto out_phy_node; } ret = devm_request_irq(dev, ndev->irq, hix5hd2_interrupt, 0, pdev->name, ndev); if (ret) { netdev_err(ndev, "devm_request_irq failed\n"); goto out_phy_node; } ret = of_get_ethdev_address(node, ndev); if (ret) { eth_hw_addr_random(ndev); netdev_warn(ndev, "using random MAC address %pM\n", ndev->dev_addr); } INIT_WORK(&priv->tx_timeout_task, hix5hd2_tx_timeout_task); ndev->watchdog_timeo = 6 * HZ; ndev->priv_flags |= IFF_UNICAST_FLT; ndev->netdev_ops = &hix5hd2_netdev_ops; ndev->ethtool_ops = &hix5hd2_ethtools_ops; SET_NETDEV_DEV(ndev, dev); if (HAS_CAP_TSO(priv->hw_cap)) ndev->hw_features |= NETIF_F_SG; ndev->features |= ndev->hw_features | NETIF_F_HIGHDMA; ndev->vlan_features |= ndev->features; ret = hix5hd2_init_hw_desc_queue(priv); if (ret) goto out_phy_node; netif_napi_add(ndev, &priv->napi, hix5hd2_poll); if (HAS_CAP_TSO(priv->hw_cap)) { ret = hix5hd2_init_sg_desc_queue(priv); if (ret) goto out_destroy_queue; } ret = register_netdev(priv->netdev); if (ret) { netdev_err(ndev, "register_netdev failed!"); goto out_destroy_queue; } clk_disable_unprepare(priv->mac_ifc_clk); clk_disable_unprepare(priv->mac_core_clk); return ret; out_destroy_queue: if (HAS_CAP_TSO(priv->hw_cap)) hix5hd2_destroy_sg_desc_queue(priv); netif_napi_del(&priv->napi); hix5hd2_destroy_hw_desc_queue(priv); out_phy_node: of_node_put(priv->phy_node); err_mdiobus: mdiobus_unregister(bus); err_free_mdio: mdiobus_free(bus); out_disable_clk: clk_disable_unprepare(priv->mac_ifc_clk); out_disable_mac_core_clk: clk_disable_unprepare(priv->mac_core_clk); out_free_netdev: free_netdev(ndev); return ret; } static void hix5hd2_dev_remove(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); struct hix5hd2_priv *priv = netdev_priv(ndev); netif_napi_del(&priv->napi); unregister_netdev(ndev); mdiobus_unregister(priv->bus); mdiobus_free(priv->bus); if (HAS_CAP_TSO(priv->hw_cap)) hix5hd2_destroy_sg_desc_queue(priv); hix5hd2_destroy_hw_desc_queue(priv); of_node_put(priv->phy_node); cancel_work_sync(&priv->tx_timeout_task); free_netdev(ndev); } static const struct of_device_id hix5hd2_of_match[] = { { .compatible = "hisilicon,hisi-gmac-v1", .data = (void *)GEMAC_V1 }, { .compatible = "hisilicon,hisi-gmac-v2", .data = (void *)GEMAC_V2 }, { .compatible = "hisilicon,hix5hd2-gmac", .data = (void *)GEMAC_V1 }, { .compatible = "hisilicon,hi3798cv200-gmac", .data = (void *)GEMAC_V2 }, { .compatible = "hisilicon,hi3516a-gmac", .data = (void *)GEMAC_V2 }, {}, }; MODULE_DEVICE_TABLE(of, hix5hd2_of_match); static struct platform_driver hix5hd2_dev_driver = { .driver = { .name = "hisi-gmac", .of_match_table = hix5hd2_of_match, }, .probe = hix5hd2_dev_probe, .remove_new = hix5hd2_dev_remove, }; module_platform_driver(hix5hd2_dev_driver); MODULE_DESCRIPTION("HISILICON Gigabit Ethernet MAC driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:hisi-gmac");
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