ether: add hip04_eth
test:
ifconfig eth0 192.168.10.1; ping 192.168.10.6 (host)
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
diff --git a/Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt b/Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt
new file mode 100644
index 0000000..6bc542a
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt
@@ -0,0 +1,28 @@
+* Hisilicon hip04 Ethernet Controller
+
+Required properties:
+- compatible: should be "hisilicon,hip04-mac".
+- reg: address and length of the register set for the device.
+- interrupts: interrupt for the device.
+- port: port number combined with the controller: range from 0 to 31.
+- speed: 100 (100M) or 1000 (1000M).
+
+Example:
+ ge0: ethernet@2800000 {
+ compatible = "hisilicon,hip04-mac";
+ reg = <0x2800000 0x10000>;
+ interrupts = <0 434 4>;
+ port = <0>;
+ speed = <1000>;
+ };
+
+* Hisilicon hip04 Ethernet ppe: control rx & rx fifos of all ethnet controllers
+
+Required properties:
+- compatible: should be "hisilicon,ppebase".
+
+Example:
+ ppebase: ppebase@28c0000 {
+ compatible = "hisilicon,ppebase";
+ reg = <0x28c0000 0x10000>;
+ };
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 506b024..7b8115a8 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -166,5 +166,6 @@
source "drivers/net/ethernet/wiznet/Kconfig"
source "drivers/net/ethernet/xilinx/Kconfig"
source "drivers/net/ethernet/xircom/Kconfig"
+source "drivers/net/ethernet/hisilicon/Kconfig"
endif # ETHERNET
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index c0b8789..34104a6 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -77,3 +77,4 @@
obj-$(CONFIG_NET_VENDOR_WIZNET) += wiznet/
obj-$(CONFIG_NET_VENDOR_XILINX) += xilinx/
obj-$(CONFIG_NET_VENDOR_XIRCOM) += xircom/
+obj-$(CONFIG_NET_VENDOR_HISILICON) += hisilicon/
diff --git a/drivers/net/ethernet/hisilicon/Kconfig b/drivers/net/ethernet/hisilicon/Kconfig
new file mode 100644
index 0000000..541a064
--- /dev/null
+++ b/drivers/net/ethernet/hisilicon/Kconfig
@@ -0,0 +1,30 @@
+#
+# HISILICON device configuration
+#
+
+config NET_VENDOR_HISILICON
+ bool "Hisilicon devices"
+ default y
+ depends on (ARM && ARCH_HIP04)
+ ---help---
+ If you have a network (Ethernet) card belonging to this class, say Y
+ and read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about MOXA ART devices. If you say Y, you will be asked
+ for your specific card in the following questions.
+
+if NET_VENDOR_HISILICON
+
+config HIP04_ETH
+ tristate "HISILICON P04 Ethernet support"
+ depends on ARM && ARCH_HIP04
+ select NET_CORE
+ ---help---
+ If you wish to compile a kernel for a hardware with hisilicon p04 SoC and
+ want to use the internal ethernet then you should answer Y to this.
+
+
+endif # NET_VENDOR_HISILICON
diff --git a/drivers/net/ethernet/hisilicon/Makefile b/drivers/net/ethernet/hisilicon/Makefile
new file mode 100644
index 0000000..ce8ce82
--- /dev/null
+++ b/drivers/net/ethernet/hisilicon/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the HISILICON network device drivers.
+#
+
+obj-$(CONFIG_HIP04_ETH) += hip04_eth.o
diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c
new file mode 100644
index 0000000..ff78e523
--- /dev/null
+++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
@@ -0,0 +1,777 @@
+
+/* Copyright (c) 2014 Linaro Ltd.
+ * Copyright (c) 2014 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/etherdevice.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/of_address.h>
+#include <linux/dmapool.h>
+
+#define PPE_CFG_RX_CFF_ADDR 0x100
+#define PPE_CFG_POOL_GRP 0x300
+#define PPE_CFG_RX_BUF_SIZE 0x400
+#define PPE_CFG_RX_FIFO_SIZE 0x500
+#define PPE_CURR_BUF_CNT_REG 0xa200
+
+#define GE_DUPLEX_TYPE 0x8
+#define GE_PORT_MODE 0x40
+#define GE_PORT_EN 0x44
+#define GE_MODE_CHANGE_EN 0x1b4
+#define GE_STATION_MAC_ADDRESS 0x210
+#define PPE_CFG_TX_PKT_BD_ADDR 0x420
+#define PPE_CFG_RX_CTRL_REG 0x428
+#define PPE_CFG_QOS_VMID_GEN 0x500
+#define PPE_CFG_RX_PKT_INT 0x538
+#define PPE_INTEN 0x600
+#define PPE_INTSTS 0x608
+#define PPE_RINT 0x604
+#define PPE_CFG_STS_MODE 0x700
+#define PPE_HIS_RX_PKT_CNT 0x804
+
+/* REG_INTERRUPT_MASK */
+#define RCV_INT BIT(10)
+#define RCV_NOBUF BIT(8)
+#define DEF_INT_MASK 0x41fdf
+
+#define RX_DESC_NUM 64
+#define TX_DESC_NUM 64
+#define TX_NEXT(N) (((N) + 1) & (TX_DESC_NUM-1))
+#define RX_NEXT(N) (((N) + 1) & (RX_DESC_NUM-1))
+
+#define DESC_DEF_CFG 0x14
+#define RX_BUF_SIZE 1600
+#define TX_TIMEOUT (6 * HZ)
+#define DRV_NAME "hip04-ether"
+
+#define OBSOLETE_BUFFER
+
+struct tx_desc {
+ u32 send_addr;
+ u16 send_size;
+ u16 reserved[3];
+ u32 cfg;
+ u32 wb_addr;
+};
+
+struct rx_desc {
+ u16 pkt_len;
+ u16 reserved_16;
+ u32 reserve[8]; /* simplified */
+};
+
+struct hip04_priv {
+ void __iomem *base;
+ unsigned int port;
+ unsigned int speed;
+ unsigned int id;
+ unsigned int reg_inten;
+
+ struct napi_struct napi;
+ struct net_device *ndev;
+ struct dma_pool *desc_pool;
+
+ struct sk_buff *tx_skb[TX_DESC_NUM];
+ struct tx_desc *td_ring[TX_DESC_NUM];
+ dma_addr_t td_phys[TX_DESC_NUM];
+ spinlock_t txlock;
+ unsigned int tx_head;
+ unsigned int tx_tail;
+ unsigned int tx_count;
+
+ struct sk_buff *rx_skb[RX_DESC_NUM];
+ unsigned char *rx_buf[RX_DESC_NUM];
+ unsigned int rx_head;
+ unsigned int rx_buf_size;
+};
+
+static void __iomem *ppebase;
+
+static void hip04_config_port(struct hip04_priv *priv, u32 speed, u32 duplex)
+{
+ u32 val, reg;
+
+ switch (speed) {
+ case SPEED_1000:
+ reg = 8;
+ break;
+ case SPEED_100:
+ reg = 1;
+ break;
+ default:
+ reg = 0;
+ break;
+ }
+
+ val = readl_relaxed(priv->base + GE_PORT_MODE);
+ val |= reg;
+ writel_relaxed(val, priv->base + GE_PORT_MODE);
+
+ reg = (duplex) ? BIT(1) : BIT(0);
+ val = readl_relaxed(priv->base + GE_DUPLEX_TYPE);
+ val |= reg;
+ writel_relaxed(val, priv->base + GE_DUPLEX_TYPE);
+
+ val = readl_relaxed(priv->base + GE_MODE_CHANGE_EN);
+ val |= BIT(1);
+ writel_relaxed(val, priv->base + GE_MODE_CHANGE_EN);
+}
+
+#ifdef OBSOLETE_CONFIG
+#define GE_MAX_FRM_SIZE_REG 0x3c
+#define GE_SHORT_RUNTS_THR_REG 0x50
+#define GE_TX_LOCAL_PAGE_REG 0x5c
+#define GE_TRANSMIT_CONTROL_REG 0x60
+#define GE_CF_CRC_STRIP_REG 0x1b0
+#define GE_RECV_CONTROL_REG 0x1e0
+#define PPE_CFG_MAX_FRAME_LEN_REG 0x408
+#define PPE_CFG_BUS_CTRL_REG 0x424
+#define PPE_CFG_RX_PKT_MODE_REG 0x438
+#define GMAC_PPE_RX_PKT_MAX_LEN (379)
+#define GMAC_MAX_PKT_LEN 1516
+
+static void hip04_test_config(struct hip04_priv *priv)
+{
+ u32 val;
+
+ /* pkt mode */
+ val = readl_relaxed(priv->base + PPE_CFG_RX_PKT_MODE_REG);
+ val &= ~(0xc0000); /* [19:18] */
+ val |= 1 << 18; /* align */
+ writel_relaxed(val, priv->base + PPE_CFG_RX_PKT_MODE_REG);
+
+ /* set bus ctrl */
+ val = 1 << 14; /* buffer locally release */
+ val |= 1; /* big endian */
+ /* fixme: fe only ?*/
+ val &= ~BIT(7); /* disable poe */
+ writel_relaxed(val, priv->base + PPE_CFG_BUS_CTRL_REG);
+
+ /* set max pkt len, curtail if exceed */
+ val = readl_relaxed(priv->base + PPE_CFG_MAX_FRAME_LEN_REG);
+ val &= ~(0x3fff); /* [13:0]*/
+ val |= GMAC_PPE_RX_PKT_MAX_LEN; /* max buffer len */
+ writel_relaxed(val, priv->base + PPE_CFG_MAX_FRAME_LEN_REG);
+
+ /* set max len of each pkt */
+ val = readl_relaxed(priv->base + GE_MAX_FRM_SIZE_REG);
+ val &= ~(0xffff); /* [15:0]*/
+ val |= GMAC_MAX_PKT_LEN; /* max buffer len */
+ writel_relaxed(val, priv->base + GE_MAX_FRM_SIZE_REG);
+
+ /* set min len of each pkt */
+ val = readl_relaxed(priv->base + GE_SHORT_RUNTS_THR_REG);
+ val |= 31; /* min buffer len */
+ writel_relaxed(val, priv->base + GE_SHORT_RUNTS_THR_REG);
+
+ /* tx */
+ val = readl_relaxed(priv->base + GE_TRANSMIT_CONTROL_REG);
+ val |= 1 << 5; /* tx auto neg */
+ val |= 1 << 6; /* tx add crc */
+ val |= 1 << 7; /* tx short pad through */
+ writel_relaxed(val, priv->base + GE_TRANSMIT_CONTROL_REG);
+
+ /* rx crc */
+ val = readl_relaxed(priv->base + GE_CF_CRC_STRIP_REG);
+ val |= 1; /* rx strip crc */
+ writel_relaxed(val, priv->base + GE_CF_CRC_STRIP_REG);
+
+ /* rx pad */
+ val = readl_relaxed(priv->base + GE_RECV_CONTROL_REG);
+ val |= 1 << 3; /* rx strip pad */
+ writel_relaxed(val, priv->base + GE_RECV_CONTROL_REG);
+
+ /* auto neg control */
+ val = readl_relaxed(priv->base + GE_TX_LOCAL_PAGE_REG);
+ val |= 1;
+ val &= ~(0x1e0); /* [8:5] = 0*/
+ val &= ~(0x3c0); /* [13:10] = 0*/
+ val &= ~(0x8000); /* [15] = 0*/
+ writel_relaxed(val, priv->base + GE_TX_LOCAL_PAGE_REG);
+}
+#endif
+
+static void hip04_reset_ppe(struct hip04_priv *priv)
+{
+ u32 val;
+
+ do {
+ val =
+ readl_relaxed(ppebase + priv->port * 4 + PPE_CURR_BUF_CNT_REG);
+ readl_relaxed(ppebase + priv->port * 4 + PPE_CFG_RX_CFF_ADDR);
+ } while (val & 0xfff);
+}
+
+static void hip04_config_fifo(struct hip04_priv *priv)
+{
+ u32 val;
+
+ val = readl_relaxed(priv->base + PPE_CFG_STS_MODE);
+ val |= BIT(12); /* PPE_HIS_RX_PKT_CNT read clear */
+ writel_relaxed(val, priv->base + PPE_CFG_STS_MODE);
+
+ val = readl_relaxed(ppebase + priv->port * 4 + PPE_CFG_POOL_GRP);
+ val |= BIT(priv->port);
+ writel_relaxed(val, ppebase + priv->port * 4 + PPE_CFG_POOL_GRP);
+
+ val = readl_relaxed(priv->base + PPE_CFG_QOS_VMID_GEN);
+ val &= ~(0x7f00); /* [14:8]*/
+ val |= BIT(14);
+ val |= priv->port << 8;
+ writel_relaxed(val, priv->base + PPE_CFG_QOS_VMID_GEN);
+
+ val = readl_relaxed(ppebase + priv->port * 4 + PPE_CFG_RX_BUF_SIZE);
+ val &= ~(0xffff); /* [15:0]*/
+ val |= RX_BUF_SIZE;
+ writel_relaxed(val, ppebase + priv->port * 4 + PPE_CFG_RX_BUF_SIZE);
+
+ val = readl_relaxed(ppebase + priv->port * 4 + PPE_CFG_RX_FIFO_SIZE);
+ val &= ~(0xfff0fff); /* [27:16] [11:0]*/
+ val |= RX_DESC_NUM << 16; /* depth */
+ val |= BIT(11); /* seq: first set first ues */
+ val |= RX_DESC_NUM * priv->id; /* start_addr */
+ writel_relaxed(val, ppebase + priv->port * 4 + PPE_CFG_RX_FIFO_SIZE);
+
+ /* pkt store format */
+ val = readl_relaxed(priv->base + PPE_CFG_RX_CTRL_REG);
+ val &= ~(0x1f80f); /* [16:11] [3:0]*/
+ val |= 2 << 11; /* align */
+ writel_relaxed(val, priv->base + PPE_CFG_RX_CTRL_REG);
+}
+
+static void hip04_mac_enable(struct net_device *ndev, bool enable)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+ u32 val;
+
+ if (enable) {
+ /* enable tx & rx */
+ val = readl_relaxed(priv->base + GE_PORT_EN);
+ val |= 0x1 << 1; /* rx*/
+ val |= 0x1 << 2; /* tx*/
+ writel_relaxed(val, priv->base + GE_PORT_EN);
+
+ /* enable interrupt */
+ priv->reg_inten = DEF_INT_MASK;
+ writel_relaxed(priv->reg_inten, priv->base + PPE_INTEN);
+
+ /* clear rx int */
+ val = RCV_INT;
+ writel_relaxed(val, priv->base + PPE_RINT);
+
+ /* config recv int*/
+ val = readl_relaxed(priv->base + PPE_CFG_RX_PKT_INT);
+ val &= ~(0x0fff); /* [11:0] */
+ val |= 0x1 << 6; /* int threshold 1 package */
+ val |= 0x4; /* recv timeout */
+ writel_relaxed(val, priv->base + PPE_CFG_RX_PKT_INT);
+ } else {
+ /* disable int */
+ priv->reg_inten &= ~(RCV_INT | RCV_NOBUF);
+ writel_relaxed(priv->reg_inten, priv->base + PPE_INTEN);
+
+ /* disable tx & rx */
+ val = readl_relaxed(priv->base + GE_PORT_EN);
+ val &= ~(0x1 << 1); /* rx*/
+ val &= ~(0x1 << 2); /* tx*/
+ writel_relaxed(val, priv->base + GE_PORT_EN);
+ }
+}
+
+static void hip04_set_xmit_desc(struct hip04_priv *priv, dma_addr_t phys)
+{
+ writel_relaxed(phys, priv->base + PPE_CFG_TX_PKT_BD_ADDR);
+}
+
+static void hip04_set_recv_desc(struct hip04_priv *priv, dma_addr_t phys)
+{
+ writel_relaxed(phys, ppebase + priv->port * 4 + PPE_CFG_RX_CFF_ADDR);
+}
+
+static u32 hip04_recv_cnt(struct hip04_priv *priv)
+{
+ return readl_relaxed(priv->base + PPE_HIS_RX_PKT_CNT);
+}
+
+static void hip04_update_mac_address(struct net_device *ndev)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+
+ writel_relaxed(((ndev->dev_addr[0] << 8) | (ndev->dev_addr[1])),
+ priv->base + GE_STATION_MAC_ADDRESS);
+ writel_relaxed(((ndev->dev_addr[2] << 24) | (ndev->dev_addr[3] << 16) |
+ (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5])),
+ priv->base + GE_STATION_MAC_ADDRESS + 4);
+}
+
+static int hip04_set_mac_address(struct net_device *ndev, void *addr)
+{
+ struct sockaddr *address = addr;
+
+ if (!is_valid_ether_addr(address->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(ndev->dev_addr, address->sa_data, ndev->addr_len);
+ hip04_update_mac_address(ndev);
+
+ return 0;
+}
+
+static void endian_change(void *p, int size)
+{
+ unsigned int *to_cover = (unsigned int *)p;
+ int i;
+
+ size = size >> 2;
+ for (i = 0; i < size; i++)
+ *(to_cover+i) = htonl(*(to_cover+i));
+}
+
+#ifdef OBSOLETE_BUFFER
+static int
+hip04_rx_refill_one_buffer(struct net_device *ndev, unsigned int index)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+ struct sk_buff *skb;
+
+ skb = dev_alloc_skb(RX_BUF_SIZE + NET_SKB_PAD);
+ if (NULL == skb)
+ return -ENOMEM;
+
+ memset(skb->data, 0x0, RX_BUF_SIZE);
+ priv->rx_skb[index] = skb;
+ dma_map_single(&(ndev->dev), skb->data, RX_BUF_SIZE, DMA_TO_DEVICE);
+ hip04_set_recv_desc(priv, virt_to_phys(skb->data));
+
+ return 0;
+}
+#endif
+
+static int hip04_rx_poll(struct napi_struct *napi, int budget)
+{
+ struct hip04_priv *priv = container_of(napi,
+ struct hip04_priv, napi);
+ struct net_device *ndev = priv->ndev;
+ struct sk_buff *skb;
+ struct rx_desc *desc;
+ unsigned char *buf;
+ int rx = 0;
+ unsigned int cnt = hip04_recv_cnt(priv);
+ unsigned int len, tmp[16];
+
+ while (cnt) {
+#ifdef OBSOLETE_BUFFER
+ skb = priv->rx_skb[priv->rx_head];
+#else
+ buf = priv->rx_buf[priv->rx_head];
+ skb = build_skb(buf, priv->rx_buf_size);
+ if (unlikely(!skb))
+ net_dbg_ratelimited("build_skb failed\n");
+#endif
+ dma_map_single(&ndev->dev, skb->data,
+ RX_BUF_SIZE, DMA_FROM_DEVICE);
+ memcpy(tmp, skb->data, 64);
+ endian_change((void *)tmp, 64);
+ desc = (struct rx_desc *)tmp;
+ len = desc->pkt_len;
+
+ if (len > RX_BUF_SIZE)
+ len = RX_BUF_SIZE;
+ if (0 == len)
+ break;
+
+ skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
+ skb_put(skb, len);
+ skb->protocol = eth_type_trans(skb, ndev);
+ napi_gro_receive(&priv->napi, skb);
+
+#ifdef OBSOLETE_BUFFER
+ hip04_rx_refill_one_buffer(ndev, priv->rx_head);
+#else
+ dma_map_single(&ndev->dev, buf, RX_BUF_SIZE, DMA_TO_DEVICE);
+ /* reuse the buffer after data exhausted */
+ hip04_set_recv_desc(priv, virt_to_phys(buf));
+#endif
+ priv->rx_head = RX_NEXT(priv->rx_head);
+
+ if (rx++ >= budget)
+ break;
+
+ if (--cnt == 0)
+ cnt = hip04_recv_cnt(priv);
+ }
+
+ if (rx < budget) {
+ napi_gro_flush(napi, false);
+ __napi_complete(napi);
+ }
+
+ /* enable rx interrupt */
+ priv->reg_inten |= RCV_INT | RCV_NOBUF;
+ writel_relaxed(priv->reg_inten, priv->base + PPE_INTEN);
+
+ return rx;
+}
+
+static irqreturn_t hip04_mac_interrupt(int irq, void *dev_id)
+{
+ struct net_device *ndev = (struct net_device *) dev_id;
+ struct hip04_priv *priv = netdev_priv(ndev);
+ unsigned int ists = readl(priv->base + PPE_INTSTS);
+ u32 val;
+
+ val = DEF_INT_MASK;
+ writel_relaxed(val, priv->base + PPE_RINT);
+
+ if ((ists & RCV_INT) || (ists & RCV_NOBUF)) {
+ if (napi_schedule_prep(&priv->napi)) {
+ /* disable rx interrupt */
+ priv->reg_inten &= ~(RCV_INT | RCV_NOBUF);
+ writel_relaxed(priv->reg_inten, priv->base + PPE_INTEN);
+ __napi_schedule(&priv->napi);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void hip04_tx_reclaim(struct net_device *ndev, bool force)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+ unsigned tx_head = priv->tx_head;
+ unsigned tx_tail = priv->tx_tail;
+ struct tx_desc *desc = priv->td_ring[priv->tx_tail];
+
+ spin_lock_irq(&priv->txlock);
+ while (tx_tail != tx_head) {
+ if (desc->send_addr != 0) {
+ if (force)
+ desc->send_addr = 0;
+ else
+ break;
+ }
+ dev_kfree_skb_irq(priv->tx_skb[tx_tail]);
+ priv->tx_skb[tx_tail] = NULL;
+ tx_tail = TX_NEXT(tx_tail);
+ priv->tx_count--;
+ }
+ priv->tx_tail = tx_tail;
+ spin_unlock_irq(&priv->txlock);
+}
+
+static int hip04_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+ struct tx_desc *desc = priv->td_ring[priv->tx_head];
+ unsigned int tx_head = priv->tx_head;
+ int ret;
+
+ hip04_tx_reclaim(ndev, false);
+
+ spin_lock_irq(&priv->txlock);
+ if (priv->tx_count++ >= TX_DESC_NUM) {
+ net_dbg_ratelimited("no TX space for packet\n");
+ netif_stop_queue(ndev);
+ ret = NETDEV_TX_BUSY;
+ goto out_unlock;
+ }
+
+ priv->tx_skb[tx_head] = skb;
+ dma_map_single(&ndev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+ memset((void *)desc, 0, sizeof(*desc));
+ desc->send_addr = (unsigned int)virt_to_phys(skb->data);
+ desc->send_size = skb->len;
+ desc->cfg = DESC_DEF_CFG;
+ desc->wb_addr = priv->td_phys[tx_head];
+ endian_change(desc, 64);
+ skb_tx_timestamp(skb);
+ hip04_set_xmit_desc(priv, priv->td_phys[tx_head]);
+
+ priv->tx_head = TX_NEXT(tx_head);
+ ret = NETDEV_TX_OK;
+out_unlock:
+ spin_unlock_irq(&priv->txlock);
+
+ return ret;
+}
+
+static int hip04_mac_open(struct net_device *ndev)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+ int i;
+
+#ifndef OBSOLETE_BUFFER
+ hip04_reset_ppe(priv);
+ for (i = 0; i < RX_DESC_NUM; i++) {
+ dma_map_single(&ndev->dev, priv->rx_buf[i],
+ RX_BUF_SIZE, DMA_TO_DEVICE);
+ hip04_set_recv_desc(priv, virt_to_phys(priv->rx_buf[i]));
+ }
+ priv->rx_head = 0;
+#endif
+ priv->tx_head = 0;
+ priv->tx_tail = 0;
+ priv->tx_count = 0;
+
+ netif_start_queue(ndev);
+ hip04_mac_enable(ndev, true);
+ napi_enable(&priv->napi);
+ return 0;
+}
+
+static int hip04_mac_stop(struct net_device *ndev)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+
+ napi_disable(&priv->napi);
+ netif_stop_queue(ndev);
+ hip04_mac_enable(ndev, false);
+ hip04_tx_reclaim(ndev, true);
+#ifndef OBSOLETE_BUFFER
+ hip04_reset_ppe(priv);
+#endif
+ return 0;
+}
+
+static void hip04_timeout(struct net_device *ndev)
+{
+ netif_wake_queue(ndev);
+ return;
+}
+
+static struct net_device_ops hip04_netdev_ops = {
+ .ndo_open = hip04_mac_open,
+ .ndo_stop = hip04_mac_stop,
+ .ndo_start_xmit = hip04_mac_start_xmit,
+ .ndo_set_mac_address = hip04_set_mac_address,
+ .ndo_tx_timeout = hip04_timeout,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+};
+
+#ifdef OBSOLETE_BUFFER
+static int hip04_rx_ring_init(struct net_device *dev)
+{
+ struct hip04_priv *priv = netdev_priv(dev);
+ struct sk_buff *skb = NULL;
+ unsigned int i;
+
+ for (i = 0; i < RX_DESC_NUM; i++) {
+ skb = dev_alloc_skb(RX_BUF_SIZE);
+ if (NULL == skb)
+ return -ENOMEM;
+ memset(skb->data, 0x0, RX_BUF_SIZE);
+ dma_map_single(&dev->dev, (skb->data),
+ RX_BUF_SIZE, DMA_TO_DEVICE);
+ hip04_set_recv_desc(priv, virt_to_phys(skb->data));
+ priv->rx_skb[i] = skb;
+ }
+ priv->rx_head = 0;
+ return 0;
+}
+#endif
+
+static int hip04_alloc_ring(struct net_device *ndev, struct device *d)
+{
+ struct hip04_priv *priv = netdev_priv(ndev);
+ void *base;
+ int i;
+
+ priv->desc_pool = dma_pool_create(DRV_NAME, d, sizeof(struct tx_desc),
+ SKB_DATA_ALIGN(sizeof(struct tx_desc)), 0);
+ if (!priv->desc_pool)
+ return -ENOMEM;
+
+ for (i = 0; i < TX_DESC_NUM; i++) {
+ priv->td_ring[i] = dma_pool_alloc(priv->desc_pool,
+ GFP_ATOMIC, &priv->td_phys[i]);
+ if (!priv->td_ring[i])
+ return -ENOMEM;
+ }
+
+#ifndef OBSOLETE_BUFFER
+ priv->rx_head = 0;
+ priv->rx_buf_size = RX_BUF_SIZE +
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+ /* mallco one more buffer for SKB_DATA_ALIGN */
+ base = devm_kzalloc(d, priv->rx_buf_size * (RX_DESC_NUM + 1),
+ GFP_ATOMIC);
+ if (!base)
+ return -ENOMEM;
+ base = (void *)SKB_DATA_ALIGN((unsigned int)base);
+ for (i = 0; i < RX_DESC_NUM; i++)
+ priv->rx_buf[i] = base + i * priv->rx_buf_size;
+#endif
+ return 0;
+}
+
+static void hip04_free_ring(struct net_device *dev)
+{
+ struct hip04_priv *priv = netdev_priv(dev);
+ int i;
+
+ for (i = 0; i < TX_DESC_NUM; i++) {
+ if (priv->tx_skb[i])
+ dev_kfree_skb_any(priv->tx_skb[i]);
+ if ((priv->desc_pool) && (priv->td_ring[i]))
+ dma_pool_free(priv->desc_pool, priv->td_ring[i],
+ priv->td_phys[i]);
+ }
+
+ if (priv->desc_pool)
+ dma_pool_destroy(priv->desc_pool);
+}
+
+static int hip04_mac_probe(struct platform_device *pdev)
+{
+ struct device *d = &pdev->dev;
+ struct device_node *node = d->of_node;
+ struct net_device *ndev;
+ struct hip04_priv *priv;
+ struct resource *res;
+ unsigned int irq, val;
+ int ret;
+
+ ndev = alloc_etherdev(sizeof(struct hip04_priv));
+ if (!ndev)
+ return -ENOMEM;
+
+ priv = netdev_priv(ndev);
+ priv->ndev = ndev;
+ platform_set_drvdata(pdev, ndev);
+ spin_lock_init(&priv->txlock);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ ret = -EINVAL;
+ goto init_fail;
+ }
+ ndev->base_addr = res->start;
+ priv->base = devm_ioremap_resource(d, res);
+ ret = IS_ERR(priv->base);
+ if (ret) {
+ dev_err(d, "devm_ioremap_resource failed\n");
+ goto init_fail;
+ }
+
+ if (!ppebase) {
+ struct device_node *n;
+
+ n = of_find_compatible_node(NULL, NULL, "hisilicon,ppebase");
+ if (!n) {
+ ret = -EINVAL;
+ netdev_err(ndev, "not find hisilicon,ppebase\n");
+ goto init_fail;
+ }
+ ppebase = of_iomap(n, 0);
+ }
+
+ ret = of_property_read_u32(node, "port", &val);
+ if (ret) {
+ dev_warn(d, "not find port info\n");
+ goto init_fail;
+ }
+ priv->port = val & 0x1f;
+
+ ret = of_property_read_u32(node, "speed", &val);
+ if (ret) {
+ dev_warn(d, "not find speed info\n");
+ priv->speed = SPEED_1000;
+ }
+
+ if (SPEED_100 == val)
+ priv->speed = SPEED_100;
+ else
+ priv->speed = SPEED_1000;
+
+ /* fixme any id can be used directly? */
+ ret = of_property_read_u32(node, "id", &priv->id);
+ if (ret) {
+ dev_warn(d, "not find id info\n");
+ goto init_fail;
+ }
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0) {
+ ret = -EINVAL;
+ goto init_fail;
+ }
+ ether_setup(ndev);
+ ndev->netdev_ops = &hip04_netdev_ops;
+ ndev->watchdog_timeo = TX_TIMEOUT;
+ ndev->priv_flags |= IFF_UNICAST_FLT;
+ ndev->irq = irq;
+ netif_napi_add(ndev, &priv->napi, hip04_rx_poll, RX_DESC_NUM);
+ SET_NETDEV_DEV(ndev, &pdev->dev);
+
+ hip04_reset_ppe(priv);
+ hip04_config_port(priv, priv->speed, DUPLEX_FULL);
+ hip04_config_fifo(priv);
+ random_ether_addr(ndev->dev_addr);
+ hip04_update_mac_address(ndev);
+#ifdef OBSOLETE_BUFFER
+ hip04_rx_ring_init(ndev);
+#endif
+ ret = hip04_alloc_ring(ndev, d);
+ if (ret) {
+ netdev_err(ndev, "alloc ring fail\n");
+ goto alloc_fail;
+ }
+
+ ret = devm_request_irq(d, irq, hip04_mac_interrupt,
+ 0, pdev->name, ndev);
+ if (ret) {
+ netdev_err(ndev, "devm_request_irq failed\n");
+ goto init_fail;
+ }
+
+ ret = register_netdev(ndev);
+ if (ret) {
+ free_netdev(ndev);
+ goto init_fail;
+ }
+
+ return 0;
+alloc_fail:
+ hip04_free_ring(ndev);
+init_fail:
+ free_netdev(ndev);
+ return ret;
+}
+
+static int hip04_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+
+ unregister_netdev(ndev);
+ free_irq(ndev->irq, ndev);
+ free_netdev(ndev);
+ free_netdev(ndev);
+
+ return 0;
+}
+
+static const struct of_device_id hip04_mac_match[] = {
+ { .compatible = "hisilicon,hip04-mac" },
+ { }
+};
+
+static struct platform_driver hip04_mac_driver = {
+ .probe = hip04_mac_probe,
+ .remove = hip04_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = hip04_mac_match,
+ },
+};
+module_platform_driver(hip04_mac_driver);
+
+MODULE_DESCRIPTION("HISILICON P04 Ethernet driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:hip04-ether");
