This patch introduces the mvneta driver to support the network controller
found in Armada 370/XP SoCs.
Tested-by: Sebastian Hesselbarth <sebastian.hesselba...@gmail.com>
Signed-off-by: Ezequiel Garcia <ezequiel.gar...@free-electrons.com>
---
drivers/net/Kconfig | 6 +
drivers/net/Makefile | 1 +
drivers/net/mvneta.c | 766 +++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 773 insertions(+)
create mode 100644 drivers/net/mvneta.c
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 24b9844..724507f 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -137,6 +137,12 @@ config DRIVER_NET_MPC5200
depends on ARCH_MPC5200
select PHYLIB
+config DRIVER_NET_MVNETA
+ bool "Marvell NETA"
+ depends on ARCH_MVEBU
+ select PHYLIB
+ select MDIO_MVEBU
+
config DRIVER_NET_NETX
bool "Hilscher Netx ethernet driver"
depends on HAS_NETX_ETHER
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 3e66b31..75a70be 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_DRIVER_NET_KS8851_MLL) += ks8851_mll.o
obj-$(CONFIG_DRIVER_NET_MACB) += macb.o
obj-$(CONFIG_DRIVER_NET_MICREL) += ksz8864rmn.o
obj-$(CONFIG_DRIVER_NET_MPC5200) += fec_mpc5200.o
+obj-$(CONFIG_DRIVER_NET_MVNETA) += mvneta.o
obj-$(CONFIG_DRIVER_NET_NETX) += netx_eth.o
obj-$(CONFIG_DRIVER_NET_ORION) += orion-gbe.o
obj-$(CONFIG_DRIVER_NET_RTL8139) += rtl8139.o
diff --git a/drivers/net/mvneta.c b/drivers/net/mvneta.c
new file mode 100644
index 0000000..7734cf8
--- /dev/null
+++ b/drivers/net/mvneta.c
@@ -0,0 +1,766 @@
+/*
+ * (C) Copyright 2014 - Ezequiel Garcia <ezequiel.gar...@free-electrons.com>
+ *
+ * based on mvneta driver from linux
+ * (C) Copyright 2012 Marvell
+ * Rami Rosen <ros...@marvell.com>
+ * Thomas Petazzoni <thomas.petazz...@free-electrons.com>
+ *
+ * based on orion-gbe driver from barebox
+ * (C) Copyright 2014
+ * Pengutronix, Michael Grzeschik <m...@pengutronix.de>
+ * Sebastian Hesselbarth <sebastian.hesselba...@gmail.com>
+
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <io.h>
+#include <net.h>
+#include <of_net.h>
+#include <sizes.h>
+#include <asm/mmu.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/mbus.h>
+
+/* Registers */
+
+/* Rx queue */
+#define MVNETA_RXQ_CONFIG_REG(q) (0x1400 + ((q) << 2))
+#define MVNETA_RXQ_PKT_OFFSET_ALL_MASK (0xf << 8)
+#define MVNETA_RXQ_PKT_OFFSET_MASK(offs) ((offs) << 8)
+#define MVNETA_RXQ_THRESHOLD_REG(q) (0x14c0 + ((q) << 2))
+#define MVNETA_RXQ_NON_OCCUPIED(v) ((v) << 16)
+#define MVNETA_RXQ_BASE_ADDR_REG(q) (0x1480 + ((q) << 2))
+#define MVNETA_RXQ_SIZE_REG(q) (0x14a0 + ((q) << 2))
+#define MVNETA_RXQ_BUF_SIZE_SHIFT 19
+#define MVNETA_RXQ_BUF_SIZE_MASK (0x1fff << 19)
+#define MVNETA_RXQ_STATUS_REG(q) (0x14e0 + ((q) << 2))
+#define MVNETA_RXQ_OCCUPIED_ALL_MASK 0x3fff
+#define MVNETA_RXQ_STATUS_UPDATE_REG(q) (0x1500 + ((q) << 2))
+#define MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT 16
+#define MVNETA_RXQ_ADD_NON_OCCUPIED_MAX 255
+
+#define MVNETA_PORT_RX_RESET 0x1cc0
+#define MVNETA_MBUS_RETRY 0x2010
+#define MVNETA_UNIT_INTR_CAUSE 0x2080
+#define MVNETA_UNIT_CONTROL 0x20B0
+#define MVNETA_WIN_BASE(w) (0x2200 + ((w) << 3))
+#define MVNETA_WIN_SIZE(w) (0x2204 + ((w) << 3))
+#define MVNETA_WIN_REMAP(w) (0x2280 + ((w) << 2))
+#define MVNETA_BASE_ADDR_ENABLE 0x2290
+#define MVNETA_PORT_CONFIG 0x2400
+#define MVNETA_DEF_RXQ(q) ((q) << 1)
+#define MVNETA_DEF_RXQ_ARP(q) ((q) << 4)
+#define MVNETA_TX_UNSET_ERR_SUM BIT(12)
+#define MVNETA_DEF_RXQ_TCP(q) ((q) << 16)
+#define MVNETA_DEF_RXQ_UDP(q) ((q) << 19)
+#define MVNETA_DEF_RXQ_BPDU(q) ((q) << 22)
+#define MVNETA_RX_CSUM_WITH_PSEUDO_HDR BIT(25)
+#define MVNETA_PORT_CONFIG_DEFL_VALUE(q) (MVNETA_DEF_RXQ(q) | \
+ MVNETA_DEF_RXQ_ARP(q) | \
+ MVNETA_DEF_RXQ_TCP(q) | \
+ MVNETA_DEF_RXQ_UDP(q) | \
+ MVNETA_DEF_RXQ_BPDU(q) | \
+ MVNETA_TX_UNSET_ERR_SUM | \
+ MVNETA_RX_CSUM_WITH_PSEUDO_HDR)
+#define MVNETA_PORT_CONFIG_EXTEND 0x2404
+#define MVNETA_MAC_ADDR_LOW 0x2414
+#define MVNETA_MAC_ADDR_HIGH 0x2418
+#define MVNETA_SDMA_CONFIG 0x241c
+#define MVNETA_SDMA_BRST_SIZE_16 4
+#define MVNETA_RX_BRST_SZ_MASK(burst) ((burst) << 1)
+#define MVNETA_RX_NO_DATA_SWAP BIT(4)
+#define MVNETA_TX_NO_DATA_SWAP BIT(5)
+#define MVNETA_DESC_SWAP BIT(6)
+#define MVNETA_TX_BRST_SZ_MASK(burst) ((burst) << 22)
+#define MVNETA_RX_MIN_FRAME_SIZE 0x247c
+#define MVNETA_SERDES_CFG 0x24a0
+#define MVNETA_SGMII_SERDES 0x0cc7
+#define MVNETA_QSGMII_SERDES 0x0667
+#define MVNETA_TYPE_PRIO 0x24bc
+#define MVNETA_TXQ_CMD_1 0x24e4
+#define MVNETA_TXQ_CMD 0x2448
+#define MVNETA_TXQ_DISABLE_SHIFT 8
+#define MVNETA_TXQ_ENABLE_MASK 0x000000ff
+#define MVNETA_ACC_MODE 0x2500
+#define MVNETA_CPU_MAP(cpu) (0x2540 + ((cpu) << 2))
+
+#define MVNETA_INTR_NEW_CAUSE 0x25a0
+#define MVNETA_INTR_NEW_MASK 0x25a4
+#define MVNETA_INTR_OLD_CAUSE 0x25a8
+#define MVNETA_INTR_OLD_MASK 0x25ac
+#define MVNETA_INTR_MISC_CAUSE 0x25b0
+#define MVNETA_INTR_MISC_MASK 0x25b4
+#define MVNETA_INTR_ENABLE 0x25b8
+
+#define MVNETA_RXQ_CMD 0x2680
+#define MVNETA_RXQ_DISABLE_SHIFT 8
+#define MVNETA_RXQ_ENABLE_MASK 0x000000ff
+#define MVETH_TXQ_TOKEN_COUNT_REG(q) (0x2700 + ((q) << 4))
+#define MVETH_TXQ_TOKEN_CFG_REG(q) (0x2704 + ((q) << 4))
+#define MVNETA_GMAC_CTRL_0 0x2c00
+#define MVNETA_GMAC_CTRL_2 0x2c08
+#define MVNETA_GMAC2_PCS_ENABLE BIT(3)
+#define MVNETA_GMAC2_PORT_RGMII BIT(4)
+#define MVNETA_GMAC2_PORT_RESET BIT(6)
+#define MVNETA_GMAC_AUTONEG_CONFIG 0x2c0c
+#define MVNETA_GMAC_FORCE_LINK_DOWN BIT(0)
+#define MVNETA_GMAC_FORCE_LINK_PASS BIT(1)
+#define MVNETA_GMAC_CONFIG_MII_SPEED BIT(5)
+#define MVNETA_GMAC_CONFIG_GMII_SPEED BIT(6)
+#define MVNETA_GMAC_AN_SPEED_EN BIT(7)
+#define MVNETA_GMAC_CONFIG_FLOWCTRL BIT(8)
+#define MVNETA_GMAC_CONFIG_FULL_DUPLEX BIT(12)
+#define MVNETA_GMAC_AN_FLOWCTRL_EN BIT(11)
+#define MVNETA_GMAC_AN_DUPLEX_EN BIT(13)
+#define MVNETA_MIB_COUNTERS_BASE 0x3080
+#define MVNETA_MIB_LATE_COLLISION 0x7c
+#define MVNETA_DA_FILT_SPEC_MCAST 0x3400
+#define MVNETA_DA_FILT_OTH_MCAST 0x3500
+#define MVNETA_DA_FILT_UCAST_BASE 0x3600
+#define MVNETA_TXQ_BASE_ADDR_REG(q) (0x3c00 + ((q) << 2))
+#define MVNETA_TXQ_SIZE_REG(q) (0x3c20 + ((q) << 2))
+#define MVNETA_TXQ_UPDATE_REG(q) (0x3c60 + ((q) << 2))
+#define MVNETA_TXQ_DEC_SENT_SHIFT 16
+#define MVNETA_TXQ_STATUS_REG(q) (0x3c40 + ((q) << 2))
+#define MVNETA_PORT_TX_RESET 0x3cf0
+#define MVNETA_TX_MTU 0x3e0c
+#define MVNETA_TX_TOKEN_SIZE 0x3e14
+#define MVNETA_TXQ_TOKEN_SIZE_REG(q) (0x3e40 + ((q) << 2))
+
+/* The mvneta_tx_desc and mvneta_rx_desc structures describe the
+ * layout of the transmit and reception DMA descriptors, and their
+ * layout is therefore defined by the hardware design
+ */
+
+#define MVNETA_TX_L3_OFF_SHIFT 0
+#define MVNETA_TX_IP_HLEN_SHIFT 8
+#define MVNETA_TX_L4_UDP BIT(16)
+#define MVNETA_TX_L3_IP6 BIT(17)
+#define MVNETA_TXD_IP_CSUM BIT(18)
+#define MVNETA_TXD_Z_PAD BIT(19)
+#define MVNETA_TXD_L_DESC BIT(20)
+#define MVNETA_TXD_F_DESC BIT(21)
+#define MVNETA_TXD_FLZ_DESC (MVNETA_TXD_Z_PAD | \
+ MVNETA_TXD_L_DESC | \
+ MVNETA_TXD_F_DESC)
+#define MVNETA_TX_L4_CSUM_FULL BIT(30)
+#define MVNETA_TX_L4_CSUM_NOT BIT(31)
+
+#define MVNETA_TXD_ERROR BIT(0)
+#define TXD_ERROR_MASK 0x6
+#define TXD_ERROR_SHIFT 1
+
+#define MVNETA_RXD_ERR_CRC 0x0
+#define MVNETA_RXD_ERR_SUMMARY BIT(16)
+#define MVNETA_RXD_ERR_OVERRUN BIT(17)
+#define MVNETA_RXD_ERR_LEN BIT(18)
+#define MVNETA_RXD_ERR_RESOURCE (BIT(17) | BIT(18))
+#define MVNETA_RXD_ERR_CODE_MASK (BIT(17) | BIT(18))
+#define MVNETA_RXD_L3_IP4 BIT(25)
+#define MVNETA_RXD_FIRST_LAST_DESC (BIT(26) | BIT(27))
+#define MVNETA_RXD_L4_CSUM_OK BIT(30)
+
+#define MVNETA_MH_SIZE 2
+#define TXQ_NUM 8
+#define RX_RING_SIZE 4
+#define TRANSFER_TIMEOUT (10 * MSECOND)
+
+struct rxdesc {
+ u32 cmd_sts; /* Info about received packet */
+ u16 reserved1; /* pnc_info - (for future use, PnC) */
+ u16 data_size; /* Size of received packet in bytes */
+
+ u32 buf_phys_addr; /* Physical address of the buffer */
+ u32 reserved2; /* pnc_flow_id (for future use, PnC) */
+
+ u32 buf_cookie; /* cookie for access to RX buffer in rx path */
+ u16 reserved3; /* prefetch_cmd, for future use */
+ u16 reserved4; /* csum_l4 - (for future use, PnC) */
+
+ u32 reserved5; /* pnc_extra PnC (for future use, PnC) */
+ u32 reserved6; /* hw_cmd (for future use, PnC and HWF) */
+};
+
+struct txdesc {
+ u32 cmd_sts; /* Options used by HW for packet transmitting.*/
+ u16 reserverd1; /* csum_l4 (for future use) */
+ u16 byte_cnt; /* Data size of transmitted packet in bytes */
+ u32 buf_ptr; /* Physical addr of transmitted buffer */
+ u8 error; /* */
+ u8 reserved2; /* Reserved - (for future use) */
+ u16 reserved3; /* Reserved - (for future use) */
+ u32 reserved4[4]; /* Reserved - (for future use) */
+};
+
+struct mvneta_port {
+ void __iomem *reg;
+ struct device_d dev;
+ struct eth_device edev;
+ struct clk *clk;
+
+ struct txdesc *txdesc;
+ struct rxdesc *rxdesc;
+ int curr_rxdesc;
+ u8 *rxbuf;
+ phy_interface_t intf;
+};
+
+static void mvneta_conf_mbus_windows(struct mvneta_port *priv)
+{
+ const struct mbus_dram_target_info *dram = mvebu_mbus_dram_info();
+ u32 win_enable, win_protect;
+ int i;
+
+ for (i = 0; i < 6; i++) {
+ writel(0, priv->reg + MVNETA_WIN_BASE(i));
+ writel(0, priv->reg + MVNETA_WIN_SIZE(i));
+
+ if (i < 4)
+ writel(0, priv->reg + MVNETA_WIN_REMAP(i));
+ }
+
+ win_enable = 0x3f;
+ win_protect = 0;
+
+ for (i = 0; i < dram->num_cs; i++) {
+ const struct mbus_dram_window *cs = dram->cs + i;
+
+ writel((cs->base & 0xffff0000) |
+ (cs->mbus_attr << 8) |
+ dram->mbus_dram_target_id,
+ priv->reg + MVNETA_WIN_BASE(i));
+
+ writel((cs->size - 1) & 0xffff0000,
+ priv->reg + MVNETA_WIN_SIZE(i));
+
+ win_enable &= ~(1 << i);
+ win_protect |= 3 << (2 * i);
+ }
+
+ writel(win_enable, priv->reg + MVNETA_BASE_ADDR_ENABLE);
+}
+
+static void mvneta_clear_mcast_table(struct mvneta_port *priv)
+{
+ int offset;
+
+ for (offset = 0; offset <= 0xfc; offset += 4) {
+ writel(0, priv->reg + MVNETA_DA_FILT_UCAST_BASE + offset);
+ writel(0, priv->reg + MVNETA_DA_FILT_SPEC_MCAST + offset);
+ writel(0, priv->reg + MVNETA_DA_FILT_OTH_MCAST + offset);
+ }
+}
+
+/* Set unicast address */
+static void mvneta_set_ucast_addr(struct mvneta_port *priv, u8 last_nibble)
+{
+ unsigned int tbl_offset, reg_offset;
+ int queue = 0;
+ u32 val;
+
+ /* Locate the Unicast table entry */
+ last_nibble = (0xf & last_nibble);
+
+ /* offset from unicast tbl base */
+ tbl_offset = (last_nibble / 4) * 4;
+
+ /* offset within the above reg */
+ reg_offset = last_nibble % 4;
+
+ val = readl(priv->reg + MVNETA_DA_FILT_UCAST_BASE + tbl_offset);
+
+ val &= ~(0xff << (8 * reg_offset));
+ val |= ((0x01 | (queue << 1)) << (8 * reg_offset));
+
+ writel(val, priv->reg + MVNETA_DA_FILT_UCAST_BASE + tbl_offset);
+}
+
+static void mvneta_clear_ucast_addr(struct mvneta_port *priv, u8 last_nibble)
+{
+ unsigned int tbl_offset, reg_offset;
+ u32 val;
+
+ /* Locate the Unicast table entry */
+ last_nibble = (0xf & last_nibble);
+
+ /* offset from unicast tbl base */
+ tbl_offset = (last_nibble / 4) * 4;
+
+ /* offset within the above reg */
+ reg_offset = last_nibble % 4;
+
+ val = readl(priv->reg + MVNETA_DA_FILT_UCAST_BASE + tbl_offset);
+
+ /* Clear accepts frame bit at specified unicast DA tbl entry */
+ val &= ~(0xff << (8 * reg_offset));
+
+ writel(val, priv->reg + MVNETA_DA_FILT_UCAST_BASE + tbl_offset);
+}
+
+static void mvneta_rx_unicast_promisc_clear(struct mvneta_port *priv)
+{
+ u32 portcfg, val;
+
+ portcfg = readl(priv->reg + MVNETA_PORT_CONFIG);
+ val = readl(priv->reg + MVNETA_TYPE_PRIO);
+
+ /* Reject all Unicast addresses */
+ writel(portcfg & ~BIT(0), priv->reg + MVNETA_PORT_CONFIG);
+ writel(val & ~BIT(21), priv->reg + MVNETA_TYPE_PRIO);
+}
+
+/* Clear all MIB counters */
+static void mvneta_mib_counters_clear(struct mvneta_port *priv)
+{
+ int i;
+
+ /* Perform dummy reads from MIB counters */
+ for (i = 0; i < MVNETA_MIB_LATE_COLLISION; i += 4)
+ readl(priv->reg + MVNETA_MIB_COUNTERS_BASE + i);
+}
+
+static int mvneta_pending_tx(struct mvneta_port *priv)
+{
+ u32 val = readl(priv->reg + MVNETA_TXQ_STATUS_REG(0));
+
+ return val & 0x3fff;
+}
+
+static int mvneta_pending_rx(struct mvneta_port *priv)
+{
+ u32 val = readl(priv->reg + MVNETA_RXQ_STATUS_REG(0));
+
+ return val & 0x3fff;
+}
+
+static void mvneta_port_stop(struct mvneta_port *priv)
+{
+ u32 val;
+
+ /* Stop all queues */
+ writel(0xff << MVNETA_RXQ_DISABLE_SHIFT, priv->reg + MVNETA_RXQ_CMD);
+ writel(0xff << MVNETA_TXQ_DISABLE_SHIFT, priv->reg + MVNETA_TXQ_CMD);
+
+ /* Reset Tx */
+ writel(BIT(0), priv->reg + MVNETA_PORT_TX_RESET);
+ writel(0, priv->reg + MVNETA_PORT_TX_RESET);
+
+ /* Reset Rx */
+ writel(BIT(0), priv->reg + MVNETA_PORT_RX_RESET);
+ writel(0, priv->reg + MVNETA_PORT_RX_RESET);
+
+ /* Disable port 0 */
+ val = readl(priv->reg + MVNETA_GMAC_CTRL_0);
+ writel(val & ~BIT(0), priv->reg + MVNETA_GMAC_CTRL_0);
+ udelay(200);
+
+ /* Clear all Cause registers */
+ writel(0, priv->reg + MVNETA_INTR_NEW_CAUSE);
+ writel(0, priv->reg + MVNETA_INTR_OLD_CAUSE);
+ writel(0, priv->reg + MVNETA_INTR_MISC_CAUSE);
+ writel(0, priv->reg + MVNETA_UNIT_INTR_CAUSE);
+
+ /* Mask all interrupts */
+ writel(0, priv->reg + MVNETA_INTR_NEW_MASK);
+ writel(0, priv->reg + MVNETA_INTR_OLD_MASK);
+ writel(0, priv->reg + MVNETA_INTR_MISC_MASK);
+ writel(0, priv->reg + MVNETA_INTR_ENABLE);
+}
+
+static void mvneta_halt(struct eth_device *edev)
+{
+ mvneta_port_stop((struct mvneta_port *)edev->priv);
+}
+
+static int mvneta_send(struct eth_device *edev, void *data, int len)
+{
+ struct mvneta_port *priv = edev->priv;
+ struct txdesc *txdesc = priv->txdesc;
+ int ret, error, last_desc;
+
+ /* Flush transmit data */
+ dma_flush_range((unsigned long)data, (unsigned long)data+len);
+
+ /* Fill the Tx descriptor */
+ txdesc->cmd_sts |= MVNETA_TX_L4_CSUM_NOT | MVNETA_TXD_FLZ_DESC;
+ txdesc->buf_ptr = (u32)data;
+ txdesc->byte_cnt = len;
+
+ /* Increase the number of prepared descriptors (one), by writing
+ * to the 'NoOfWrittenDescriptors' field in the PTXSU register.
+ */
+ writel(1, priv->reg + MVNETA_TXQ_UPDATE_REG(0));
+
+ /* The controller updates the number of transmitted descriptors in
+ * the Tx port status register (PTXS).
+ */
+ ret = wait_on_timeout(TRANSFER_TIMEOUT, !mvneta_pending_tx(priv));
+ if (ret) {
+ dev_err(&edev->dev, "transmit timeout\n");
+ return ret;
+ }
+
+ last_desc = readl(&txdesc->cmd_sts) & MVNETA_TXD_L_DESC;
+ error = readl(&txdesc->error);
+ if (last_desc && error & MVNETA_TXD_ERROR) {
+ dev_err(&edev->dev, "transmit error %d\n",
+ (error & TXD_ERROR_MASK) >> TXD_ERROR_SHIFT);
+ return -EIO;
+ }
+
+ /* Release the transmitted descriptor by writing to the
+ * 'NoOfReleasedBuffers' field in the PTXSU register.
+ */
+ writel(1 << MVNETA_TXQ_DEC_SENT_SHIFT,
+ priv->reg + MVNETA_TXQ_UPDATE_REG(0));
+
+ return 0;
+}
+
+static int mvneta_recv(struct eth_device *edev)
+{
+ struct mvneta_port *priv = edev->priv;
+ struct rxdesc *rxdesc = &priv->rxdesc[priv->curr_rxdesc];
+ int ret, pending;
+ u32 cmd_sts;
+
+ /* wait for received packet */
+ pending = mvneta_pending_rx(priv);
+ if (!pending)
+ return 0;
+
+ /* drop malicious packets */
+ cmd_sts = readl(&rxdesc->cmd_sts);
+ if ((cmd_sts & MVNETA_RXD_FIRST_LAST_DESC) !=
+ MVNETA_RXD_FIRST_LAST_DESC) {
+ dev_err(&edev->dev, "rx packet spread on multiple
descriptors\n");
+ ret = -EIO;
+ goto recv_err;
+ }
+
+ if (cmd_sts & MVNETA_RXD_ERR_SUMMARY) {
+ dev_err(&edev->dev, "receive error\n");
+ ret = -EIO;
+ goto recv_err;
+ }
+
+ /* invalidate current receive buffer */
+ dma_inv_range((unsigned long)rxdesc->buf_phys_addr,
+ (unsigned long)rxdesc->buf_phys_addr +
+ ALIGN(PKTSIZE, 8));
+
+ /* received packet is padded with two null bytes (Marvell header) */
+ net_receive(edev, (void *)(rxdesc->buf_phys_addr + MVNETA_MH_SIZE),
+ rxdesc->data_size - MVNETA_MH_SIZE);
+ ret = 0;
+
+recv_err:
+ /* reset this and get next rx descriptor*/
+ rxdesc->data_size = 0;
+ rxdesc->cmd_sts = 0;
+
+ priv->curr_rxdesc++;
+ if (priv->curr_rxdesc == RX_RING_SIZE)
+ priv->curr_rxdesc = 0;
+
+ /* Descriptor processed and refilled */
+ writel(1 | 1 << MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT,
+ priv->reg + MVNETA_RXQ_STATUS_UPDATE_REG(0));
+ return ret;
+}
+
+static int mvneta_set_ethaddr(struct eth_device *edev, unsigned char *mac)
+{
+ struct mvneta_port *priv = edev->priv;
+ u32 mac_h = (mac[0] << 24) | (mac[1] << 16) | (mac[2] << 8) | mac[3];
+ u32 mac_l = (mac[4] << 8) | mac[5];
+
+ mvneta_clear_ucast_addr(priv, mac[5]);
+
+ writel(mac_l, priv->reg + MVNETA_MAC_ADDR_LOW);
+ writel(mac_h, priv->reg + MVNETA_MAC_ADDR_HIGH);
+
+ /* accept frames for this address */
+ mvneta_set_ucast_addr(priv, mac[5]);
+
+ return 0;
+}
+
+static int mvneta_get_ethaddr(struct eth_device *edev, unsigned char *mac)
+{
+ struct mvneta_port *priv = edev->priv;
+ u32 mac_l = readl(priv->reg + MVNETA_MAC_ADDR_LOW);
+ u32 mac_h = readl(priv->reg + MVNETA_MAC_ADDR_HIGH);
+
+ mac[0] = (mac_h >> 24) & 0xff;
+ mac[1] = (mac_h >> 16) & 0xff;
+ mac[2] = (mac_h >> 8) & 0xff;
+ mac[3] = mac_h & 0xff;
+ mac[4] = (mac_l >> 8) & 0xff;
+ mac[5] = mac_l & 0xff;
+
+ return 0;
+}
+
+static void mvneta_adjust_link(struct eth_device *edev)
+{
+ struct mvneta_port *priv = edev->priv;
+ struct phy_device *phy = edev->phydev;
+ u32 val;
+
+ if (!phy->link)
+ return;
+
+ val = readl(priv->reg + MVNETA_GMAC_AUTONEG_CONFIG);
+ val &= ~(MVNETA_GMAC_CONFIG_MII_SPEED |
+ MVNETA_GMAC_CONFIG_GMII_SPEED |
+ MVNETA_GMAC_CONFIG_FULL_DUPLEX |
+ MVNETA_GMAC_AN_SPEED_EN |
+ MVNETA_GMAC_AN_FLOWCTRL_EN |
+ MVNETA_GMAC_AN_DUPLEX_EN);
+
+ if (phy->speed == SPEED_1000)
+ val |= MVNETA_GMAC_CONFIG_GMII_SPEED;
+ else if (phy->speed == SPEED_100)
+ val |= MVNETA_GMAC_CONFIG_MII_SPEED;
+
+ if (phy->duplex)
+ val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
+
+ if (phy->pause)
+ val |= MVNETA_GMAC_CONFIG_FLOWCTRL;
+
+ val |= MVNETA_GMAC_FORCE_LINK_PASS | MVNETA_GMAC_FORCE_LINK_DOWN;
+
+ writel(val, priv->reg + MVNETA_GMAC_AUTONEG_CONFIG);
+
+ mvneta_mib_counters_clear(priv);
+
+ /* Enable first Tx and first Rx queues */
+ writel(BIT(0), priv->reg + MVNETA_TXQ_CMD);
+ writel(BIT(0), priv->reg + MVNETA_RXQ_CMD);
+}
+
+static int mvneta_open(struct eth_device *edev)
+{
+ struct mvneta_port *priv = edev->priv;
+ int ret;
+ u32 val;
+
+ ret = phy_device_connect(&priv->edev, NULL, -1,
+ mvneta_adjust_link, 0, priv->intf);
+ if (ret)
+ return ret;
+
+ /* Enable the first port */
+ val = readl(priv->reg + MVNETA_GMAC_CTRL_0);
+ writel(val | BIT(0), priv->reg + MVNETA_GMAC_CTRL_0);
+
+ return 0;
+}
+
+static void mvneta_init_rx_ring(struct mvneta_port *priv)
+{
+ int i;
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ struct rxdesc *desc = &priv->rxdesc[i];
+
+ desc->buf_phys_addr = (u32)priv->rxbuf + i * ALIGN(PKTSIZE, 8);
+ }
+
+ priv->curr_rxdesc = 0;
+}
+
+void mvneta_setup_tx_rx(struct mvneta_port *priv)
+{
+ u32 val;
+
+ /* Allocate descriptors and buffers */
+ priv->txdesc = dma_alloc_coherent(ALIGN(sizeof(*priv->txdesc), 32));
+ priv->rxdesc = dma_alloc_coherent(RX_RING_SIZE *
+ ALIGN(sizeof(*priv->rxdesc), 32));
+ priv->rxbuf = dma_alloc(RX_RING_SIZE * ALIGN(PKTSIZE, 8));
+
+ mvneta_init_rx_ring(priv);
+
+ /* Configure the Rx queue */
+ val = readl(priv->reg + MVNETA_RXQ_CONFIG_REG(0));
+ val &= ~MVNETA_RXQ_PKT_OFFSET_ALL_MASK;
+ writel(val, priv->reg + MVNETA_RXQ_CONFIG_REG(0));
+
+ /* Configure the Tx descriptor */
+ writel(1, priv->reg + MVNETA_TXQ_SIZE_REG(0));
+ writel((u32)priv->txdesc, priv->reg + MVNETA_TXQ_BASE_ADDR_REG(0));
+
+ /* Configure the Rx descriptor. Packet size is in 8-byte units. */
+ val = RX_RING_SIZE;
+ val |= ((PKTSIZE >> 3) << MVNETA_RXQ_BUF_SIZE_SHIFT);
+ writel(val , priv->reg + MVNETA_RXQ_SIZE_REG(0));
+ writel((u32)priv->rxdesc, priv->reg + MVNETA_RXQ_BASE_ADDR_REG(0));
+
+ /* Set the number of available Rx descriptors */
+ writel(RX_RING_SIZE << MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT,
+ priv->reg + MVNETA_RXQ_STATUS_UPDATE_REG(0));
+}
+
+static int mvneta_port_config(struct mvneta_port *priv)
+{
+ int queue;
+ u32 val;
+
+ /* Enable MBUS Retry bit16 */
+ writel(0x20, priv->reg + MVNETA_MBUS_RETRY);
+
+ /* Map the first Tx queue and first Rx queue to CPU0 */
+ writel(BIT(0) | (BIT(0) << 8), priv->reg + MVNETA_CPU_MAP(0));
+
+ /* Reset Tx/Rx DMA */
+ writel(BIT(0), priv->reg + MVNETA_PORT_TX_RESET);
+ writel(BIT(0), priv->reg + MVNETA_PORT_RX_RESET);
+
+ /* Disable Legacy WRR, Disable EJP, Release from reset */
+ writel(0, priv->reg + MVNETA_TXQ_CMD_1);
+
+ /* Set maximum bandwidth for the first TX queue */
+ writel(0x3ffffff, priv->reg + MVETH_TXQ_TOKEN_CFG_REG(0));
+ writel(0x3ffffff, priv->reg + MVETH_TXQ_TOKEN_COUNT_REG(0));
+
+ /* Minimum bandwidth on the rest of them */
+ for (queue = 1; queue < TXQ_NUM; queue++) {
+ writel(0, priv->reg + MVETH_TXQ_TOKEN_COUNT_REG(queue));
+ writel(0, priv->reg + MVETH_TXQ_TOKEN_CFG_REG(queue));
+ }
+
+ writel(0, priv->reg + MVNETA_PORT_RX_RESET);
+ writel(0, priv->reg + MVNETA_PORT_TX_RESET);
+
+ /* Disable hardware PHY polling */
+ val = readl(priv->reg + MVNETA_UNIT_CONTROL);
+ writel(val & ~BIT(1), priv->reg + MVNETA_UNIT_CONTROL);
+
+ /* Port Acceleration Mode */
+ writel(0x1, priv->reg + MVNETA_ACC_MODE);
+
+ /* Port default configuration for the first Rx queue */
+ val = MVNETA_PORT_CONFIG_DEFL_VALUE(0);
+ writel(val, priv->reg + MVNETA_PORT_CONFIG);
+ writel(0, priv->reg + MVNETA_PORT_CONFIG_EXTEND);
+ writel(64, priv->reg + MVNETA_RX_MIN_FRAME_SIZE);
+
+ /* Default burst size */
+ val = 0;
+ val |= MVNETA_TX_BRST_SZ_MASK(MVNETA_SDMA_BRST_SIZE_16);
+ val |= MVNETA_RX_BRST_SZ_MASK(MVNETA_SDMA_BRST_SIZE_16);
+ val |= MVNETA_RX_NO_DATA_SWAP | MVNETA_TX_NO_DATA_SWAP;
+ writel(val, priv->reg + MVNETA_SDMA_CONFIG);
+
+ mvneta_clear_mcast_table(priv);
+ mvneta_rx_unicast_promisc_clear(priv);
+
+ /* Configure maximum MTU and token size */
+ writel(0x0003ffff, priv->reg + MVNETA_TX_MTU);
+ writel(0xffffffff, priv->reg + MVNETA_TX_TOKEN_SIZE);
+ writel(0x7fffffff, priv->reg + MVNETA_TXQ_TOKEN_SIZE_REG(0));
+
+ val = readl(priv->reg + MVNETA_GMAC_CTRL_2);
+
+ /* Even though it might look weird, when we're configured in
+ * SGMII or QSGMII mode, the RGMII bit needs to be set.
+ */
+ switch (priv->intf) {
+ case PHY_INTERFACE_MODE_QSGMII:
+ writel(MVNETA_QSGMII_SERDES, priv->reg + MVNETA_SERDES_CFG);
+ val |= MVNETA_GMAC2_PCS_ENABLE | MVNETA_GMAC2_PORT_RGMII;
+ break;
+ case PHY_INTERFACE_MODE_SGMII:
+ writel(MVNETA_SGMII_SERDES, priv->reg + MVNETA_SERDES_CFG);
+ val |= MVNETA_GMAC2_PCS_ENABLE | MVNETA_GMAC2_PORT_RGMII;
+ break;
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ val |= MVNETA_GMAC2_PORT_RGMII;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Cancel Port Reset */
+ val &= ~MVNETA_GMAC2_PORT_RESET;
+ writel(val, priv->reg + MVNETA_GMAC_CTRL_2);
+ while (readl(priv->reg + MVNETA_GMAC_CTRL_2) & MVNETA_GMAC2_PORT_RESET)
+ continue;
+
+ return 0;
+}
+
+static int mvneta_probe(struct device_d *dev)
+{
+ struct mvneta_port *priv;
+ int ret;
+
+ priv = xzalloc(sizeof(*priv));
+
+ priv->reg = dev_get_mem_region(dev, 0);
+
+ priv->clk = clk_get(dev, 0);
+ if (IS_ERR(priv->clk))
+ return PTR_ERR(priv->clk);
+ clk_enable(priv->clk);
+
+ ret = of_get_phy_mode(dev->device_node);
+ if (ret < 0)
+ return ret;
+ priv->intf = ret;
+
+ mvneta_port_stop(priv);
+
+ ret = mvneta_port_config(priv);
+ if (ret)
+ return ret;
+
+ mvneta_conf_mbus_windows(priv);
+ mvneta_setup_tx_rx(priv);
+
+ /* register eth device */
+ priv->edev.priv = priv;
+ priv->edev.open = mvneta_open;
+ priv->edev.send = mvneta_send;
+ priv->edev.recv = mvneta_recv;
+ priv->edev.halt = mvneta_halt;
+ priv->edev.set_ethaddr = mvneta_set_ethaddr;
+ priv->edev.get_ethaddr = mvneta_get_ethaddr;
+ priv->edev.parent = dev;
+
+ ret = eth_register(&priv->edev);
+ if (ret)
+ return ret;
+ return 0;
+}
+
+static struct of_device_id mvneta_dt_ids[] = {
+ { .compatible = "marvell,armada-370-neta", },
+ { }
+};
+
+static struct driver_d mvneta_driver = {
+ .name = "mvneta",
+ .probe = mvneta_probe,
+ .of_compatible = DRV_OF_COMPAT(mvneta_dt_ids),
+};
+device_platform_driver(mvneta_driver);
--
2.1.0
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