From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from down.free-electrons.com ([37.187.137.238] helo=mail.free-electrons.com) by casper.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XnTx6-0004gQ-9Y for barebox@lists.infradead.org; Sun, 09 Nov 2014 14:58:53 +0000 From: Ezequiel Garcia Date: Sun, 9 Nov 2014 11:56:18 -0300 Message-Id: <1415544978-22392-5-git-send-email-ezequiel.garcia@free-electrons.com> In-Reply-To: <1415544978-22392-1-git-send-email-ezequiel.garcia@free-electrons.com> References: <1415544978-22392-1-git-send-email-ezequiel.garcia@free-electrons.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v3 4/4] net: Add driver for Armada 370/XP 10/100/1000 Mbps network controller To: Thomas Petazzoni , Sebastian Hesselbarth , Sascha Hauer Cc: barebox@lists.infradead.org This patch introduces the mvneta driver to support the network controller found in Armada 370/XP SoCs. Tested-by: Sebastian Hesselbarth Signed-off-by: Ezequiel Garcia --- 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 + * + * based on mvneta driver from linux + * (C) Copyright 2012 Marvell + * Rami Rosen + * Thomas Petazzoni + * + * based on orion-gbe driver from barebox + * (C) Copyright 2014 + * Pengutronix, Michael Grzeschik + * Sebastian Hesselbarth + + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* 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 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox