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authorAlbert Aribaud <albert.aribaud@free.fr>2010-07-12 22:24:27 +0200
committerBen Warren <biggerbadderben@gmail.com>2010-07-12 23:40:30 -0700
commit9b6bcdcb932cf38a2da1b059f661b8ee6b85175f (patch)
treeba6170e6e2b52a4b712da8b637f569e0b7f5f15c /drivers/net/mvgbe.c
parentc67e2ccd5045d7f1dff7eac3ac9007bb4bfa9794 (diff)
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net: rename: kirkwood_egiga as mvgbe
Rename kirkwood_egiga.* to mvgbe.* and adjust makefile and #include accordingly. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr> Acked-by: Prafulla Wadaskar <prafulla@marvell.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'drivers/net/mvgbe.c')
-rw-r--r--drivers/net/mvgbe.c736
1 files changed, 736 insertions, 0 deletions
diff --git a/drivers/net/mvgbe.c b/drivers/net/mvgbe.c
new file mode 100644
index 0000000..1efca1e
--- /dev/null
+++ b/drivers/net/mvgbe.c
@@ -0,0 +1,736 @@
+/*
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * (C) Copyright 2003
+ * Ingo Assmus <ingo.assmus@keymile.com>
+ *
+ * based on - Driver for MV64360X ethernet ports
+ * Copyright (C) 2002 rabeeh@galileo.co.il
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <net.h>
+#include <malloc.h>
+#include <miiphy.h>
+#include <asm/errno.h>
+#include <asm/types.h>
+#include <asm/byteorder.h>
+#include <asm/arch/kirkwood.h>
+#include "mvgbe.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define KIRKWOOD_PHY_ADR_REQUEST 0xee
+#define KWGBE_SMI_REG (((struct kwgbe_registers *)KW_EGIGA0_BASE)->smi)
+
+/*
+ * smi_reg_read - miiphy_read callback function.
+ *
+ * Returns 16bit phy register value, or 0xffff on error
+ */
+static int smi_reg_read(char *devname, u8 phy_adr, u8 reg_ofs, u16 * data)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
+ struct kwgbe_registers *regs = dkwgbe->regs;
+ u32 smi_reg;
+ u32 timeout;
+
+ /* Phyadr read request */
+ if (phy_adr == KIRKWOOD_PHY_ADR_REQUEST &&
+ reg_ofs == KIRKWOOD_PHY_ADR_REQUEST) {
+ /* */
+ *data = (u16) (KWGBEREG_RD(regs->phyadr) & PHYADR_MASK);
+ return 0;
+ }
+ /* check parameters */
+ if (phy_adr > PHYADR_MASK) {
+ printf("Err..(%s) Invalid PHY address %d\n",
+ __FUNCTION__, phy_adr);
+ return -EFAULT;
+ }
+ if (reg_ofs > PHYREG_MASK) {
+ printf("Err..(%s) Invalid register offset %d\n",
+ __FUNCTION__, reg_ofs);
+ return -EFAULT;
+ }
+
+ timeout = KWGBE_PHY_SMI_TIMEOUT;
+ /* wait till the SMI is not busy */
+ do {
+ /* read smi register */
+ smi_reg = KWGBEREG_RD(KWGBE_SMI_REG);
+ if (timeout-- == 0) {
+ printf("Err..(%s) SMI busy timeout\n", __FUNCTION__);
+ return -EFAULT;
+ }
+ } while (smi_reg & KWGBE_PHY_SMI_BUSY_MASK);
+
+ /* fill the phy address and regiser offset and read opcode */
+ smi_reg = (phy_adr << KWGBE_PHY_SMI_DEV_ADDR_OFFS)
+ | (reg_ofs << KWGBE_SMI_REG_ADDR_OFFS)
+ | KWGBE_PHY_SMI_OPCODE_READ;
+
+ /* write the smi register */
+ KWGBEREG_WR(KWGBE_SMI_REG, smi_reg);
+
+ /*wait till read value is ready */
+ timeout = KWGBE_PHY_SMI_TIMEOUT;
+
+ do {
+ /* read smi register */
+ smi_reg = KWGBEREG_RD(KWGBE_SMI_REG);
+ if (timeout-- == 0) {
+ printf("Err..(%s) SMI read ready timeout\n",
+ __FUNCTION__);
+ return -EFAULT;
+ }
+ } while (!(smi_reg & KWGBE_PHY_SMI_READ_VALID_MASK));
+
+ /* Wait for the data to update in the SMI register */
+ for (timeout = 0; timeout < KWGBE_PHY_SMI_TIMEOUT; timeout++) ;
+
+ *data = (u16) (KWGBEREG_RD(KWGBE_SMI_REG) & KWGBE_PHY_SMI_DATA_MASK);
+
+ debug("%s:(adr %d, off %d) value= %04x\n", __FUNCTION__, phy_adr,
+ reg_ofs, *data);
+
+ return 0;
+}
+
+/*
+ * smi_reg_write - imiiphy_write callback function.
+ *
+ * Returns 0 if write succeed, -EINVAL on bad parameters
+ * -ETIME on timeout
+ */
+static int smi_reg_write(char *devname, u8 phy_adr, u8 reg_ofs, u16 data)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
+ struct kwgbe_registers *regs = dkwgbe->regs;
+ u32 smi_reg;
+ u32 timeout;
+
+ /* Phyadr write request*/
+ if (phy_adr == KIRKWOOD_PHY_ADR_REQUEST &&
+ reg_ofs == KIRKWOOD_PHY_ADR_REQUEST) {
+ KWGBEREG_WR(regs->phyadr, data);
+ return 0;
+ }
+
+ /* check parameters */
+ if (phy_adr > PHYADR_MASK) {
+ printf("Err..(%s) Invalid phy address\n", __FUNCTION__);
+ return -EINVAL;
+ }
+ if (reg_ofs > PHYREG_MASK) {
+ printf("Err..(%s) Invalid register offset\n", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ /* wait till the SMI is not busy */
+ timeout = KWGBE_PHY_SMI_TIMEOUT;
+ do {
+ /* read smi register */
+ smi_reg = KWGBEREG_RD(KWGBE_SMI_REG);
+ if (timeout-- == 0) {
+ printf("Err..(%s) SMI busy timeout\n", __FUNCTION__);
+ return -ETIME;
+ }
+ } while (smi_reg & KWGBE_PHY_SMI_BUSY_MASK);
+
+ /* fill the phy addr and reg offset and write opcode and data */
+ smi_reg = (data << KWGBE_PHY_SMI_DATA_OFFS);
+ smi_reg |= (phy_adr << KWGBE_PHY_SMI_DEV_ADDR_OFFS)
+ | (reg_ofs << KWGBE_SMI_REG_ADDR_OFFS);
+ smi_reg &= ~KWGBE_PHY_SMI_OPCODE_READ;
+
+ /* write the smi register */
+ KWGBEREG_WR(KWGBE_SMI_REG, smi_reg);
+
+ return 0;
+}
+
+/* Stop and checks all queues */
+static void stop_queue(u32 * qreg)
+{
+ u32 reg_data;
+
+ reg_data = readl(qreg);
+
+ if (reg_data & 0xFF) {
+ /* Issue stop command for active channels only */
+ writel((reg_data << 8), qreg);
+
+ /* Wait for all queue activity to terminate. */
+ do {
+ /*
+ * Check port cause register that all queues
+ * are stopped
+ */
+ reg_data = readl(qreg);
+ }
+ while (reg_data & 0xFF);
+ }
+}
+
+/*
+ * set_access_control - Config address decode parameters for Ethernet unit
+ *
+ * This function configures the address decode parameters for the Gigabit
+ * Ethernet Controller according the given parameters struct.
+ *
+ * @regs Register struct pointer.
+ * @param Address decode parameter struct.
+ */
+static void set_access_control(struct kwgbe_registers *regs,
+ struct kwgbe_winparam *param)
+{
+ u32 access_prot_reg;
+
+ /* Set access control register */
+ access_prot_reg = KWGBEREG_RD(regs->epap);
+ /* clear window permission */
+ access_prot_reg &= (~(3 << (param->win * 2)));
+ access_prot_reg |= (param->access_ctrl << (param->win * 2));
+ KWGBEREG_WR(regs->epap, access_prot_reg);
+
+ /* Set window Size reg (SR) */
+ KWGBEREG_WR(regs->barsz[param->win].size,
+ (((param->size / 0x10000) - 1) << 16));
+
+ /* Set window Base address reg (BA) */
+ KWGBEREG_WR(regs->barsz[param->win].bar,
+ (param->target | param->attrib | param->base_addr));
+ /* High address remap reg (HARR) */
+ if (param->win < 4)
+ KWGBEREG_WR(regs->ha_remap[param->win], param->high_addr);
+
+ /* Base address enable reg (BARER) */
+ if (param->enable == 1)
+ KWGBEREG_BITS_RESET(regs->bare, (1 << param->win));
+ else
+ KWGBEREG_BITS_SET(regs->bare, (1 << param->win));
+}
+
+static void set_dram_access(struct kwgbe_registers *regs)
+{
+ struct kwgbe_winparam win_param;
+ int i;
+
+ for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+ /* Set access parameters for DRAM bank i */
+ win_param.win = i; /* Use Ethernet window i */
+ /* Window target - DDR */
+ win_param.target = KWGBE_TARGET_DRAM;
+ /* Enable full access */
+ win_param.access_ctrl = EWIN_ACCESS_FULL;
+ win_param.high_addr = 0;
+ /* Get bank base and size */
+ win_param.base_addr = gd->bd->bi_dram[i].start;
+ win_param.size = gd->bd->bi_dram[i].size;
+ if (win_param.size == 0)
+ win_param.enable = 0;
+ else
+ win_param.enable = 1; /* Enable the access */
+
+ /* Enable DRAM bank */
+ switch (i) {
+ case 0:
+ win_param.attrib = EBAR_DRAM_CS0;
+ break;
+ case 1:
+ win_param.attrib = EBAR_DRAM_CS1;
+ break;
+ case 2:
+ win_param.attrib = EBAR_DRAM_CS2;
+ break;
+ case 3:
+ win_param.attrib = EBAR_DRAM_CS3;
+ break;
+ default:
+ /* invalid bank, disable access */
+ win_param.enable = 0;
+ win_param.attrib = 0;
+ break;
+ }
+ /* Set the access control for address window(EPAPR) RD/WR */
+ set_access_control(regs, &win_param);
+ }
+}
+
+/*
+ * port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
+ *
+ * Go through all the DA filter tables (Unicast, Special Multicast & Other
+ * Multicast) and set each entry to 0.
+ */
+static void port_init_mac_tables(struct kwgbe_registers *regs)
+{
+ int table_index;
+
+ /* Clear DA filter unicast table (Ex_dFUT) */
+ for (table_index = 0; table_index < 4; ++table_index)
+ KWGBEREG_WR(regs->dfut[table_index], 0);
+
+ for (table_index = 0; table_index < 64; ++table_index) {
+ /* Clear DA filter special multicast table (Ex_dFSMT) */
+ KWGBEREG_WR(regs->dfsmt[table_index], 0);
+ /* Clear DA filter other multicast table (Ex_dFOMT) */
+ KWGBEREG_WR(regs->dfomt[table_index], 0);
+ }
+}
+
+/*
+ * port_uc_addr - This function Set the port unicast address table
+ *
+ * This function locates the proper entry in the Unicast table for the
+ * specified MAC nibble and sets its properties according to function
+ * parameters.
+ * This function add/removes MAC addresses from the port unicast address
+ * table.
+ *
+ * @uc_nibble Unicast MAC Address last nibble.
+ * @option 0 = Add, 1 = remove address.
+ *
+ * RETURN: 1 if output succeeded. 0 if option parameter is invalid.
+ */
+static int port_uc_addr(struct kwgbe_registers *regs, u8 uc_nibble,
+ int option)
+{
+ u32 unicast_reg;
+ u32 tbl_offset;
+ u32 reg_offset;
+
+ /* Locate the Unicast table entry */
+ uc_nibble = (0xf & uc_nibble);
+ /* Register offset from unicast table base */
+ tbl_offset = (uc_nibble / 4);
+ /* Entry offset within the above register */
+ reg_offset = uc_nibble % 4;
+
+ switch (option) {
+ case REJECT_MAC_ADDR:
+ /*
+ * Clear accepts frame bit at specified unicast
+ * DA table entry
+ */
+ unicast_reg = KWGBEREG_RD(regs->dfut[tbl_offset]);
+ unicast_reg &= (0xFF << (8 * reg_offset));
+ KWGBEREG_WR(regs->dfut[tbl_offset], unicast_reg);
+ break;
+ case ACCEPT_MAC_ADDR:
+ /* Set accepts frame bit at unicast DA filter table entry */
+ unicast_reg = KWGBEREG_RD(regs->dfut[tbl_offset]);
+ unicast_reg &= (0xFF << (8 * reg_offset));
+ unicast_reg |= ((0x01 | (RXUQ << 1)) << (8 * reg_offset));
+ KWGBEREG_WR(regs->dfut[tbl_offset], unicast_reg);
+ break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * port_uc_addr_set - This function Set the port Unicast address.
+ */
+static void port_uc_addr_set(struct kwgbe_registers *regs, u8 * p_addr)
+{
+ u32 mac_h;
+ u32 mac_l;
+
+ mac_l = (p_addr[4] << 8) | (p_addr[5]);
+ mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) |
+ (p_addr[3] << 0);
+
+ KWGBEREG_WR(regs->macal, mac_l);
+ KWGBEREG_WR(regs->macah, mac_h);
+
+ /* Accept frames of this address */
+ port_uc_addr(regs, p_addr[5], ACCEPT_MAC_ADDR);
+}
+
+/*
+ * kwgbe_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
+ */
+static void kwgbe_init_rx_desc_ring(struct kwgbe_device *dkwgbe)
+{
+ struct kwgbe_rxdesc *p_rx_desc;
+ int i;
+
+ /* initialize the Rx descriptors ring */
+ p_rx_desc = dkwgbe->p_rxdesc;
+ for (i = 0; i < RINGSZ; i++) {
+ p_rx_desc->cmd_sts =
+ KWGBE_BUFFER_OWNED_BY_DMA | KWGBE_RX_EN_INTERRUPT;
+ p_rx_desc->buf_size = PKTSIZE_ALIGN;
+ p_rx_desc->byte_cnt = 0;
+ p_rx_desc->buf_ptr = dkwgbe->p_rxbuf + i * PKTSIZE_ALIGN;
+ if (i == (RINGSZ - 1))
+ p_rx_desc->nxtdesc_p = dkwgbe->p_rxdesc;
+ else {
+ p_rx_desc->nxtdesc_p = (struct kwgbe_rxdesc *)
+ ((u32) p_rx_desc + KW_RXQ_DESC_ALIGNED_SIZE);
+ p_rx_desc = p_rx_desc->nxtdesc_p;
+ }
+ }
+ dkwgbe->p_rxdesc_curr = dkwgbe->p_rxdesc;
+}
+
+static int kwgbe_init(struct eth_device *dev)
+{
+ struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
+ struct kwgbe_registers *regs = dkwgbe->regs;
+#if (defined (CONFIG_MII) || defined (CONFIG_CMD_MII)) \
+ && defined (CONFIG_SYS_FAULT_ECHO_LINK_DOWN)
+ int i;
+#endif
+ /* setup RX rings */
+ kwgbe_init_rx_desc_ring(dkwgbe);
+
+ /* Clear the ethernet port interrupts */
+ KWGBEREG_WR(regs->ic, 0);
+ KWGBEREG_WR(regs->ice, 0);
+ /* Unmask RX buffer and TX end interrupt */
+ KWGBEREG_WR(regs->pim, INT_CAUSE_UNMASK_ALL);
+ /* Unmask phy and link status changes interrupts */
+ KWGBEREG_WR(regs->peim, INT_CAUSE_UNMASK_ALL_EXT);
+
+ set_dram_access(regs);
+ port_init_mac_tables(regs);
+ port_uc_addr_set(regs, dkwgbe->dev.enetaddr);
+
+ /* Assign port configuration and command. */
+ KWGBEREG_WR(regs->pxc, PRT_CFG_VAL);
+ KWGBEREG_WR(regs->pxcx, PORT_CFG_EXTEND_VALUE);
+ KWGBEREG_WR(regs->psc0, PORT_SERIAL_CONTROL_VALUE);
+
+ /* Assign port SDMA configuration */
+ KWGBEREG_WR(regs->sdc, PORT_SDMA_CFG_VALUE);
+ KWGBEREG_WR(regs->tqx[0].qxttbc, QTKNBKT_DEF_VAL);
+ KWGBEREG_WR(regs->tqx[0].tqxtbc, (QMTBS_DEF_VAL << 16) | QTKNRT_DEF_VAL);
+ /* Turn off the port/RXUQ bandwidth limitation */
+ KWGBEREG_WR(regs->pmtu, 0);
+
+ /* Set maximum receive buffer to 9700 bytes */
+ KWGBEREG_WR(regs->psc0, KWGBE_MAX_RX_PACKET_9700BYTE
+ | (KWGBEREG_RD(regs->psc0) & MRU_MASK));
+
+ /* Enable port initially */
+ KWGBEREG_BITS_SET(regs->psc0, KWGBE_SERIAL_PORT_EN);
+
+ /*
+ * Set ethernet MTU for leaky bucket mechanism to 0 - this will
+ * disable the leaky bucket mechanism .
+ */
+ KWGBEREG_WR(regs->pmtu, 0);
+
+ /* Assignment of Rx CRDB of given RXUQ */
+ KWGBEREG_WR(regs->rxcdp[RXUQ], (u32) dkwgbe->p_rxdesc_curr);
+ /* ensure previous write is done before enabling Rx DMA */
+ isb();
+ /* Enable port Rx. */
+ KWGBEREG_WR(regs->rqc, (1 << RXUQ));
+
+#if (defined (CONFIG_MII) || defined (CONFIG_CMD_MII)) \
+ && defined (CONFIG_SYS_FAULT_ECHO_LINK_DOWN)
+ /* Wait up to 5s for the link status */
+ for (i = 0; i < 5; i++) {
+ u16 phyadr;
+
+ miiphy_read(dev->name, KIRKWOOD_PHY_ADR_REQUEST,
+ KIRKWOOD_PHY_ADR_REQUEST, &phyadr);
+ /* Return if we get link up */
+ if (miiphy_link(dev->name, phyadr))
+ return 0;
+ udelay(1000000);
+ }
+
+ printf("No link on %s\n", dev->name);
+ return -1;
+#endif
+ return 0;
+}
+
+static int kwgbe_halt(struct eth_device *dev)
+{
+ struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
+ struct kwgbe_registers *regs = dkwgbe->regs;
+
+ /* Disable all gigE address decoder */
+ KWGBEREG_WR(regs->bare, 0x3f);
+
+ stop_queue(&regs->tqc);
+ stop_queue(&regs->rqc);
+
+ /* Disable port */
+ KWGBEREG_BITS_RESET(regs->psc0, KWGBE_SERIAL_PORT_EN);
+ /* Set port is not reset */
+ KWGBEREG_BITS_RESET(regs->psc1, 1 << 4);
+#ifdef CONFIG_SYS_MII_MODE
+ /* Set MMI interface up */
+ KWGBEREG_BITS_RESET(regs->psc1, 1 << 3);
+#endif
+ /* Disable & mask ethernet port interrupts */
+ KWGBEREG_WR(regs->ic, 0);
+ KWGBEREG_WR(regs->ice, 0);
+ KWGBEREG_WR(regs->pim, 0);
+ KWGBEREG_WR(regs->peim, 0);
+
+ return 0;
+}
+
+static int kwgbe_write_hwaddr(struct eth_device *dev)
+{
+ struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
+ struct kwgbe_registers *regs = dkwgbe->regs;
+
+ /* Programs net device MAC address after initialization */
+ port_uc_addr_set(regs, dkwgbe->dev.enetaddr);
+ return 0;
+}
+
+static int kwgbe_send(struct eth_device *dev, volatile void *dataptr,
+ int datasize)
+{
+ struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
+ struct kwgbe_registers *regs = dkwgbe->regs;
+ struct kwgbe_txdesc *p_txdesc = dkwgbe->p_txdesc;
+ void *p = (void *)dataptr;
+ u32 cmd_sts;
+
+ /* Copy buffer if it's misaligned */
+ if ((u32) dataptr & 0x07) {
+ if (datasize > PKTSIZE_ALIGN) {
+ printf("Non-aligned data too large (%d)\n",
+ datasize);
+ return -1;
+ }
+
+ memcpy(dkwgbe->p_aligned_txbuf, p, datasize);
+ p = dkwgbe->p_aligned_txbuf;
+ }
+
+ p_txdesc->cmd_sts = KWGBE_ZERO_PADDING | KWGBE_GEN_CRC;
+ p_txdesc->cmd_sts |= KWGBE_TX_FIRST_DESC | KWGBE_TX_LAST_DESC;
+ p_txdesc->cmd_sts |= KWGBE_BUFFER_OWNED_BY_DMA;
+ p_txdesc->cmd_sts |= KWGBE_TX_EN_INTERRUPT;
+ p_txdesc->buf_ptr = (u8 *) p;
+ p_txdesc->byte_cnt = datasize;
+
+ /* Set this tc desc as zeroth TXUQ */
+ KWGBEREG_WR(regs->tcqdp[TXUQ], (u32) p_txdesc);
+
+ /* ensure tx desc writes above are performed before we start Tx DMA */
+ isb();
+
+ /* Apply send command using zeroth TXUQ */
+ KWGBEREG_WR(regs->tqc, (1 << TXUQ));
+
+ /*
+ * wait for packet xmit completion
+ */
+ cmd_sts = readl(&p_txdesc->cmd_sts);
+ while (cmd_sts & KWGBE_BUFFER_OWNED_BY_DMA) {
+ /* return fail if error is detected */
+ if ((cmd_sts & (KWGBE_ERROR_SUMMARY | KWGBE_TX_LAST_FRAME)) ==
+ (KWGBE_ERROR_SUMMARY | KWGBE_TX_LAST_FRAME) &&
+ cmd_sts & (KWGBE_UR_ERROR | KWGBE_RL_ERROR)) {
+ printf("Err..(%s) in xmit packet\n", __FUNCTION__);
+ return -1;
+ }
+ cmd_sts = readl(&p_txdesc->cmd_sts);
+ };
+ return 0;
+}
+
+static int kwgbe_recv(struct eth_device *dev)
+{
+ struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
+ struct kwgbe_rxdesc *p_rxdesc_curr = dkwgbe->p_rxdesc_curr;
+ u32 cmd_sts;
+ u32 timeout = 0;
+
+ /* wait untill rx packet available or timeout */
+ do {
+ if (timeout < KWGBE_PHY_SMI_TIMEOUT)
+ timeout++;
+ else {
+ debug("%s time out...\n", __FUNCTION__);
+ return -1;
+ }
+ } while (readl(&p_rxdesc_curr->cmd_sts) & KWGBE_BUFFER_OWNED_BY_DMA);
+
+ if (p_rxdesc_curr->byte_cnt != 0) {
+ debug("%s: Received %d byte Packet @ 0x%x (cmd_sts= %08x)\n",
+ __FUNCTION__, (u32) p_rxdesc_curr->byte_cnt,
+ (u32) p_rxdesc_curr->buf_ptr,
+ (u32) p_rxdesc_curr->cmd_sts);
+ }
+
+ /*
+ * In case received a packet without first/last bits on
+ * OR the error summary bit is on,
+ * the packets needs to be dropeed.
+ */
+ cmd_sts = readl(&p_rxdesc_curr->cmd_sts);
+
+ if ((cmd_sts &
+ (KWGBE_RX_FIRST_DESC | KWGBE_RX_LAST_DESC))
+ != (KWGBE_RX_FIRST_DESC | KWGBE_RX_LAST_DESC)) {
+
+ printf("Err..(%s) Dropping packet spread on"
+ " multiple descriptors\n", __FUNCTION__);
+
+ } else if (cmd_sts & KWGBE_ERROR_SUMMARY) {
+
+ printf("Err..(%s) Dropping packet with errors\n",
+ __FUNCTION__);
+
+ } else {
+ /* !!! call higher layer processing */
+ debug("%s: Sending Received packet to"
+ " upper layer (NetReceive)\n", __FUNCTION__);
+
+ /* let the upper layer handle the packet */
+ NetReceive((p_rxdesc_curr->buf_ptr + RX_BUF_OFFSET),
+ (int)(p_rxdesc_curr->byte_cnt - RX_BUF_OFFSET));
+ }
+ /*
+ * free these descriptors and point next in the ring
+ */
+ p_rxdesc_curr->cmd_sts =
+ KWGBE_BUFFER_OWNED_BY_DMA | KWGBE_RX_EN_INTERRUPT;
+ p_rxdesc_curr->buf_size = PKTSIZE_ALIGN;
+ p_rxdesc_curr->byte_cnt = 0;
+
+ writel((unsigned)p_rxdesc_curr->nxtdesc_p, (u32) &dkwgbe->p_rxdesc_curr);
+
+ return 0;
+}
+
+int kirkwood_egiga_initialize(bd_t * bis)
+{
+ struct kwgbe_device *dkwgbe;
+ struct eth_device *dev;
+ int devnum;
+ char *s;
+ u8 used_ports[MAX_KWGBE_DEVS] = CONFIG_KIRKWOOD_EGIGA_PORTS;
+
+ for (devnum = 0; devnum < MAX_KWGBE_DEVS; devnum++) {
+ /*skip if port is configured not to use */
+ if (used_ports[devnum] == 0)
+ continue;
+
+ if (!(dkwgbe = malloc(sizeof(struct kwgbe_device))))
+ goto error1;
+
+ memset(dkwgbe, 0, sizeof(struct kwgbe_device));
+
+ if (!(dkwgbe->p_rxdesc =
+ (struct kwgbe_rxdesc *)memalign(PKTALIGN,
+ KW_RXQ_DESC_ALIGNED_SIZE
+ * RINGSZ + 1)))
+ goto error2;
+
+ if (!(dkwgbe->p_rxbuf = (u8 *) memalign(PKTALIGN, RINGSZ
+ * PKTSIZE_ALIGN + 1)))
+ goto error3;
+
+ if (!(dkwgbe->p_aligned_txbuf = memalign(8, PKTSIZE_ALIGN)))
+ goto error4;
+
+ if (!(dkwgbe->p_txdesc = (struct kwgbe_txdesc *)
+ memalign(PKTALIGN, sizeof(struct kwgbe_txdesc) + 1))) {
+ free(dkwgbe->p_aligned_txbuf);
+ error4:
+ free(dkwgbe->p_rxbuf);
+ error3:
+ free(dkwgbe->p_rxdesc);
+ error2:
+ free(dkwgbe);
+ error1:
+ printf("Err.. %s Failed to allocate memory\n",
+ __FUNCTION__);
+ return -1;
+ }
+
+ dev = &dkwgbe->dev;
+
+ /* must be less than NAMESIZE (16) */
+ sprintf(dev->name, "egiga%d", devnum);
+
+ /* Extract the MAC address from the environment */
+ switch (devnum) {
+ case 0:
+ dkwgbe->regs = (void *)KW_EGIGA0_BASE;
+ s = "ethaddr";
+ break;
+ case 1:
+ dkwgbe->regs = (void *)KW_EGIGA1_BASE;
+ s = "eth1addr";
+ break;
+ default: /* this should never happen */
+ printf("Err..(%s) Invalid device number %d\n",
+ __FUNCTION__, devnum);
+ return -1;
+ }
+
+ while (!eth_getenv_enetaddr(s, dev->enetaddr)) {
+ /* Generate Private MAC addr if not set */
+ dev->enetaddr[0] = 0x02;
+ dev->enetaddr[1] = 0x50;
+ dev->enetaddr[2] = 0x43;
+#if defined (CONFIG_SKIP_LOCAL_MAC_RANDOMIZATION)
+ /* Generate fixed lower MAC half using devnum */
+ dev->enetaddr[3] = 0;
+ dev->enetaddr[4] = 0;
+ dev->enetaddr[5] = devnum;
+#else
+ /* Generate random lower MAC half */
+ dev->enetaddr[3] = get_random_hex();
+ dev->enetaddr[4] = get_random_hex();
+ dev->enetaddr[5] = get_random_hex();
+#endif
+ eth_setenv_enetaddr(s, dev->enetaddr);
+ }
+
+ dev->init = (void *)kwgbe_init;
+ dev->halt = (void *)kwgbe_halt;
+ dev->send = (void *)kwgbe_send;
+ dev->recv = (void *)kwgbe_recv;
+ dev->write_hwaddr = (void *)kwgbe_write_hwaddr;
+
+ eth_register(dev);
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+ miiphy_register(dev->name, smi_reg_read, smi_reg_write);
+ /* Set phy address of the port */
+ miiphy_write(dev->name, KIRKWOOD_PHY_ADR_REQUEST,
+ KIRKWOOD_PHY_ADR_REQUEST, PHY_BASE_ADR + devnum);
+#endif
+ }
+ return 0;
+}