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u-boot/drivers/net/mvgbe.c
Vladimir Oltean 77003e532c net: mvgbe: ensure mdiodev->name is NULL terminated after MDIO_NAME_LEN truncation 
strncpy() simply bails out when copying a source string whose size
exceeds the destination string size, potentially leaving the destination
string unterminated.

One possible way to address is to pass MDIO_NAME_LEN - 1 and a
previously zero-initialized destination string, but this is more
difficult to maintain.

The chosen alternative is to use strlcpy(), which properly limits the
copy len in the (srclen >= size) case to "size - 1", and which is also
more efficient than the strncpy() byte-by-byte implementation by using
memcpy. The destination string returned by strlcpy() is always NULL
terminated.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-09-28 18:50:56 +03:00

1048 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* (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
*/
#include <common.h>
#include <dm.h>
#include <log.h>
#include <net.h>
#include <malloc.h>
#include <miiphy.h>
#include <wait_bit.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <asm/types.h>
#include <asm/system.h>
#include <asm/byteorder.h>
#include <asm/arch/cpu.h>
#if defined(CONFIG_ARCH_KIRKWOOD)
#include <asm/arch/soc.h>
#elif defined(CONFIG_ARCH_ORION5X)
#include <asm/arch/orion5x.h>
#endif
#include "mvgbe.h"
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_MVGBE_PORTS
# define CONFIG_MVGBE_PORTS {0, 0}
#endif
#define MV_PHY_ADR_REQUEST 0xee
#define MVGBE_SMI_REG (((struct mvgbe_registers *)MVGBE0_BASE)->smi)
#if defined(CONFIG_PHYLIB) || defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
static int smi_wait_ready(struct mvgbe_device *dmvgbe)
{
int ret;
ret = wait_for_bit_le32(&MVGBE_SMI_REG, MVGBE_PHY_SMI_BUSY_MASK, false,
MVGBE_PHY_SMI_TIMEOUT_MS, false);
if (ret) {
printf("Error: SMI busy timeout\n");
return ret;
}
return 0;
}
static int __mvgbe_mdio_read(struct mvgbe_device *dmvgbe, int phy_adr,
int devad, int reg_ofs)
{
struct mvgbe_registers *regs = dmvgbe->regs;
u32 smi_reg;
u32 timeout;
u16 data = 0;
/* Phyadr read request */
if (phy_adr == MV_PHY_ADR_REQUEST &&
reg_ofs == MV_PHY_ADR_REQUEST) {
/* */
data = (u16) (MVGBE_REG_RD(regs->phyadr) & PHYADR_MASK);
return data;
}
/* check parameters */
if (phy_adr > PHYADR_MASK) {
printf("Err..(%s) Invalid PHY address %d\n",
__func__, phy_adr);
return -EFAULT;
}
if (reg_ofs > PHYREG_MASK) {
printf("Err..(%s) Invalid register offset %d\n",
__func__, reg_ofs);
return -EFAULT;
}
/* wait till the SMI is not busy */
if (smi_wait_ready(dmvgbe) < 0)
return -EFAULT;
/* fill the phy address and regiser offset and read opcode */
smi_reg = (phy_adr << MVGBE_PHY_SMI_DEV_ADDR_OFFS)
| (reg_ofs << MVGBE_SMI_REG_ADDR_OFFS)
| MVGBE_PHY_SMI_OPCODE_READ;
/* write the smi register */
MVGBE_REG_WR(MVGBE_SMI_REG, smi_reg);
/*wait till read value is ready */
timeout = MVGBE_PHY_SMI_TIMEOUT;
do {
/* read smi register */
smi_reg = MVGBE_REG_RD(MVGBE_SMI_REG);
if (timeout-- == 0) {
printf("Err..(%s) SMI read ready timeout\n",
__func__);
return -EFAULT;
}
} while (!(smi_reg & MVGBE_PHY_SMI_READ_VALID_MASK));
/* Wait for the data to update in the SMI register */
for (timeout = 0; timeout < MVGBE_PHY_SMI_TIMEOUT; timeout++)
;
data = (u16) (MVGBE_REG_RD(MVGBE_SMI_REG) & MVGBE_PHY_SMI_DATA_MASK);
debug("%s:(adr %d, off %d) value= %04x\n", __func__, phy_adr, reg_ofs,
data);
return data;
}
/*
* smi_reg_read - miiphy_read callback function.
*
* Returns 16bit phy register value, or -EFAULT on error
*/
static int smi_reg_read(struct mii_dev *bus, int phy_adr, int devad,
int reg_ofs)
{
#ifdef CONFIG_DM_ETH
struct mvgbe_device *dmvgbe = bus->priv;
#else
struct eth_device *dev = eth_get_dev_by_name(bus->name);
struct mvgbe_device *dmvgbe = to_mvgbe(dev);
#endif
return __mvgbe_mdio_read(dmvgbe, phy_adr, devad, reg_ofs);
}
static int __mvgbe_mdio_write(struct mvgbe_device *dmvgbe, int phy_adr,
int devad, int reg_ofs, u16 data)
{
struct mvgbe_registers *regs = dmvgbe->regs;
u32 smi_reg;
/* Phyadr write request*/
if (phy_adr == MV_PHY_ADR_REQUEST &&
reg_ofs == MV_PHY_ADR_REQUEST) {
MVGBE_REG_WR(regs->phyadr, data);
return 0;
}
/* check parameters */
if (phy_adr > PHYADR_MASK) {
printf("Err..(%s) Invalid phy address\n", __func__);
return -EINVAL;
}
if (reg_ofs > PHYREG_MASK) {
printf("Err..(%s) Invalid register offset\n", __func__);
return -EFAULT;
}
/* wait till the SMI is not busy */
if (smi_wait_ready(dmvgbe) < 0)
return -EFAULT;
/* fill the phy addr and reg offset and write opcode and data */
smi_reg = (data << MVGBE_PHY_SMI_DATA_OFFS);
smi_reg |= (phy_adr << MVGBE_PHY_SMI_DEV_ADDR_OFFS)
| (reg_ofs << MVGBE_SMI_REG_ADDR_OFFS);
smi_reg &= ~MVGBE_PHY_SMI_OPCODE_READ;
/* write the smi register */
MVGBE_REG_WR(MVGBE_SMI_REG, smi_reg);
return 0;
}
/*
* smi_reg_write - miiphy_write callback function.
*
* Returns 0 if write succeed, -EFAULT on error
*/
static int smi_reg_write(struct mii_dev *bus, int phy_adr, int devad,
int reg_ofs, u16 data)
{
#ifdef CONFIG_DM_ETH
struct mvgbe_device *dmvgbe = bus->priv;
#else
struct eth_device *dev = eth_get_dev_by_name(bus->name);
struct mvgbe_device *dmvgbe = to_mvgbe(dev);
#endif
return __mvgbe_mdio_write(dmvgbe, phy_adr, devad, reg_ofs, data);
}
#endif
/* 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 mvgbe_registers *regs,
struct mvgbe_winparam *param)
{
u32 access_prot_reg;
/* Set access control register */
access_prot_reg = MVGBE_REG_RD(regs->epap);
/* clear window permission */
access_prot_reg &= (~(3 << (param->win * 2)));
access_prot_reg |= (param->access_ctrl << (param->win * 2));
MVGBE_REG_WR(regs->epap, access_prot_reg);
/* Set window Size reg (SR) */
MVGBE_REG_WR(regs->barsz[param->win].size,
(((param->size / 0x10000) - 1) << 16));
/* Set window Base address reg (BA) */
MVGBE_REG_WR(regs->barsz[param->win].bar,
(param->target | param->attrib | param->base_addr));
/* High address remap reg (HARR) */
if (param->win < 4)
MVGBE_REG_WR(regs->ha_remap[param->win], param->high_addr);
/* Base address enable reg (BARER) */
if (param->enable == 1)
MVGBE_REG_BITS_RESET(regs->bare, (1 << param->win));
else
MVGBE_REG_BITS_SET(regs->bare, (1 << param->win));
}
static void set_dram_access(struct mvgbe_registers *regs)
{
struct mvgbe_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 = MVGBE_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 mvgbe_registers *regs)
{
int table_index;
/* Clear DA filter unicast table (Ex_dFUT) */
for (table_index = 0; table_index < 4; ++table_index)
MVGBE_REG_WR(regs->dfut[table_index], 0);
for (table_index = 0; table_index < 64; ++table_index) {
/* Clear DA filter special multicast table (Ex_dFSMT) */
MVGBE_REG_WR(regs->dfsmt[table_index], 0);
/* Clear DA filter other multicast table (Ex_dFOMT) */
MVGBE_REG_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 mvgbe_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 = MVGBE_REG_RD(regs->dfut[tbl_offset]);
unicast_reg &= (0xFF << (8 * reg_offset));
MVGBE_REG_WR(regs->dfut[tbl_offset], unicast_reg);
break;
case ACCEPT_MAC_ADDR:
/* Set accepts frame bit at unicast DA filter table entry */
unicast_reg = MVGBE_REG_RD(regs->dfut[tbl_offset]);
unicast_reg &= (0xFF << (8 * reg_offset));
unicast_reg |= ((0x01 | (RXUQ << 1)) << (8 * reg_offset));
MVGBE_REG_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 mvgbe_device *dmvgbe, u8 *p_addr)
{
struct mvgbe_registers *regs = dmvgbe->regs;
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);
MVGBE_REG_WR(regs->macal, mac_l);
MVGBE_REG_WR(regs->macah, mac_h);
/* Accept frames of this address */
port_uc_addr(regs, p_addr[5], ACCEPT_MAC_ADDR);
}
/*
* mvgbe_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
*/
static void mvgbe_init_rx_desc_ring(struct mvgbe_device *dmvgbe)
{
struct mvgbe_rxdesc *p_rx_desc;
int i;
/* initialize the Rx descriptors ring */
p_rx_desc = dmvgbe->p_rxdesc;
for (i = 0; i < RINGSZ; i++) {
p_rx_desc->cmd_sts =
MVGBE_BUFFER_OWNED_BY_DMA | MVGBE_RX_EN_INTERRUPT;
p_rx_desc->buf_size = PKTSIZE_ALIGN;
p_rx_desc->byte_cnt = 0;
p_rx_desc->buf_ptr = dmvgbe->p_rxbuf + i * PKTSIZE_ALIGN;
if (i == (RINGSZ - 1))
p_rx_desc->nxtdesc_p = dmvgbe->p_rxdesc;
else {
p_rx_desc->nxtdesc_p = (struct mvgbe_rxdesc *)
((u32) p_rx_desc + MV_RXQ_DESC_ALIGNED_SIZE);
p_rx_desc = p_rx_desc->nxtdesc_p;
}
}
dmvgbe->p_rxdesc_curr = dmvgbe->p_rxdesc;
}
static int __mvgbe_init(struct mvgbe_device *dmvgbe, u8 *enetaddr,
const char *name)
{
struct mvgbe_registers *regs = dmvgbe->regs;
#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) && \
!defined(CONFIG_PHYLIB) && \
!defined(CONFIG_DM_ETH) && \
defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN)
int i;
#endif
/* setup RX rings */
mvgbe_init_rx_desc_ring(dmvgbe);
/* Clear the ethernet port interrupts */
MVGBE_REG_WR(regs->ic, 0);
MVGBE_REG_WR(regs->ice, 0);
/* Unmask RX buffer and TX end interrupt */
MVGBE_REG_WR(regs->pim, INT_CAUSE_UNMASK_ALL);
/* Unmask phy and link status changes interrupts */
MVGBE_REG_WR(regs->peim, INT_CAUSE_UNMASK_ALL_EXT);
set_dram_access(regs);
port_init_mac_tables(regs);
port_uc_addr_set(dmvgbe, enetaddr);
/* Assign port configuration and command. */
MVGBE_REG_WR(regs->pxc, PRT_CFG_VAL);
MVGBE_REG_WR(regs->pxcx, PORT_CFG_EXTEND_VALUE);
MVGBE_REG_WR(regs->psc0, PORT_SERIAL_CONTROL_VALUE);
/* Assign port SDMA configuration */
MVGBE_REG_WR(regs->sdc, PORT_SDMA_CFG_VALUE);
MVGBE_REG_WR(regs->tqx[0].qxttbc, QTKNBKT_DEF_VAL);
MVGBE_REG_WR(regs->tqx[0].tqxtbc,
(QMTBS_DEF_VAL << 16) | QTKNRT_DEF_VAL);
/* Turn off the port/RXUQ bandwidth limitation */
MVGBE_REG_WR(regs->pmtu, 0);
/* Set maximum receive buffer to 9700 bytes */
MVGBE_REG_WR(regs->psc0, MVGBE_MAX_RX_PACKET_9700BYTE
| (MVGBE_REG_RD(regs->psc0) & MRU_MASK));
/* Enable port initially */
MVGBE_REG_BITS_SET(regs->psc0, MVGBE_SERIAL_PORT_EN);
/*
* Set ethernet MTU for leaky bucket mechanism to 0 - this will
* disable the leaky bucket mechanism .
*/
MVGBE_REG_WR(regs->pmtu, 0);
/* Assignment of Rx CRDB of given RXUQ */
MVGBE_REG_WR(regs->rxcdp[RXUQ], (u32) dmvgbe->p_rxdesc_curr);
/* ensure previous write is done before enabling Rx DMA */
isb();
/* Enable port Rx. */
MVGBE_REG_WR(regs->rqc, (1 << RXUQ));
#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) && \
!defined(CONFIG_PHYLIB) && \
!defined(CONFIG_DM_ETH) && \
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(name, MV_PHY_ADR_REQUEST,
MV_PHY_ADR_REQUEST, &phyadr);
/* Return if we get link up */
if (miiphy_link(name, phyadr))
return 0;
udelay(1000000);
}
printf("No link on %s\n", name);
return -1;
#endif
return 0;
}
#ifndef CONFIG_DM_ETH
static int mvgbe_init(struct eth_device *dev)
{
struct mvgbe_device *dmvgbe = to_mvgbe(dev);
return __mvgbe_init(dmvgbe, dmvgbe->dev.enetaddr, dmvgbe->dev.name);
}
#endif
static void __mvgbe_halt(struct mvgbe_device *dmvgbe)
{
struct mvgbe_registers *regs = dmvgbe->regs;
/* Disable all gigE address decoder */
MVGBE_REG_WR(regs->bare, 0x3f);
stop_queue(&regs->tqc);
stop_queue(&regs->rqc);
/* Disable port */
MVGBE_REG_BITS_RESET(regs->psc0, MVGBE_SERIAL_PORT_EN);
/* Set port is not reset */
MVGBE_REG_BITS_RESET(regs->psc1, 1 << 4);
#ifdef CONFIG_SYS_MII_MODE
/* Set MMI interface up */
MVGBE_REG_BITS_RESET(regs->psc1, 1 << 3);
#endif
/* Disable & mask ethernet port interrupts */
MVGBE_REG_WR(regs->ic, 0);
MVGBE_REG_WR(regs->ice, 0);
MVGBE_REG_WR(regs->pim, 0);
MVGBE_REG_WR(regs->peim, 0);
}
#ifndef CONFIG_DM_ETH
static int mvgbe_halt(struct eth_device *dev)
{
struct mvgbe_device *dmvgbe = to_mvgbe(dev);
__mvgbe_halt(dmvgbe);
return 0;
}
#endif
#ifdef CONFIG_DM_ETH
static int mvgbe_write_hwaddr(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
port_uc_addr_set(dev_get_priv(dev), pdata->enetaddr);
return 0;
}
#else
static int mvgbe_write_hwaddr(struct eth_device *dev)
{
struct mvgbe_device *dmvgbe = to_mvgbe(dev);
/* Programs net device MAC address after initialization */
port_uc_addr_set(dmvgbe, dmvgbe->dev.enetaddr);
return 0;
}
#endif
static int __mvgbe_send(struct mvgbe_device *dmvgbe, void *dataptr,
int datasize)
{
struct mvgbe_registers *regs = dmvgbe->regs;
struct mvgbe_txdesc *p_txdesc = dmvgbe->p_txdesc;
void *p = (void *)dataptr;
u32 cmd_sts;
u32 txuq0_reg_addr;
/* 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(dmvgbe->p_aligned_txbuf, p, datasize);
p = dmvgbe->p_aligned_txbuf;
}
p_txdesc->cmd_sts = MVGBE_ZERO_PADDING | MVGBE_GEN_CRC;
p_txdesc->cmd_sts |= MVGBE_TX_FIRST_DESC | MVGBE_TX_LAST_DESC;
p_txdesc->cmd_sts |= MVGBE_BUFFER_OWNED_BY_DMA;
p_txdesc->cmd_sts |= MVGBE_TX_EN_INTERRUPT;
p_txdesc->buf_ptr = (u8 *) p;
p_txdesc->byte_cnt = datasize;
/* Set this tc desc as zeroth TXUQ */
txuq0_reg_addr = (u32)&regs->tcqdp[TXUQ];
writel((u32) p_txdesc, txuq0_reg_addr);
/* ensure tx desc writes above are performed before we start Tx DMA */
isb();
/* Apply send command using zeroth TXUQ */
MVGBE_REG_WR(regs->tqc, (1 << TXUQ));
/*
* wait for packet xmit completion
*/
cmd_sts = readl(&p_txdesc->cmd_sts);
while (cmd_sts & MVGBE_BUFFER_OWNED_BY_DMA) {
/* return fail if error is detected */
if ((cmd_sts & (MVGBE_ERROR_SUMMARY | MVGBE_TX_LAST_FRAME)) ==
(MVGBE_ERROR_SUMMARY | MVGBE_TX_LAST_FRAME) &&
cmd_sts & (MVGBE_UR_ERROR | MVGBE_RL_ERROR)) {
printf("Err..(%s) in xmit packet\n", __func__);
return -1;
}
cmd_sts = readl(&p_txdesc->cmd_sts);
};
return 0;
}
#ifndef CONFIG_DM_ETH
static int mvgbe_send(struct eth_device *dev, void *dataptr, int datasize)
{
struct mvgbe_device *dmvgbe = to_mvgbe(dev);
return __mvgbe_send(dmvgbe, dataptr, datasize);
}
#endif
static int __mvgbe_recv(struct mvgbe_device *dmvgbe, uchar **packetp)
{
struct mvgbe_rxdesc *p_rxdesc_curr = dmvgbe->p_rxdesc_curr;
u32 cmd_sts;
u32 timeout = 0;
u32 rxdesc_curr_addr;
unsigned char *data;
int rx_bytes = 0;
*packetp = NULL;
/* wait untill rx packet available or timeout */
do {
if (timeout < MVGBE_PHY_SMI_TIMEOUT)
timeout++;
else {
debug("%s time out...\n", __func__);
return -1;
}
} while (readl(&p_rxdesc_curr->cmd_sts) & MVGBE_BUFFER_OWNED_BY_DMA);
if (p_rxdesc_curr->byte_cnt != 0) {
debug("%s: Received %d byte Packet @ 0x%x (cmd_sts= %08x)\n",
__func__, (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 &
(MVGBE_RX_FIRST_DESC | MVGBE_RX_LAST_DESC))
!= (MVGBE_RX_FIRST_DESC | MVGBE_RX_LAST_DESC)) {
printf("Err..(%s) Dropping packet spread on"
" multiple descriptors\n", __func__);
} else if (cmd_sts & MVGBE_ERROR_SUMMARY) {
printf("Err..(%s) Dropping packet with errors\n",
__func__);
} else {
/* !!! call higher layer processing */
debug("%s: Sending Received packet to"
" upper layer (net_process_received_packet)\n",
__func__);
data = (p_rxdesc_curr->buf_ptr + RX_BUF_OFFSET);
rx_bytes = (int)(p_rxdesc_curr->byte_cnt -
RX_BUF_OFFSET);
*packetp = data;
}
/*
* free these descriptors and point next in the ring
*/
p_rxdesc_curr->cmd_sts =
MVGBE_BUFFER_OWNED_BY_DMA | MVGBE_RX_EN_INTERRUPT;
p_rxdesc_curr->buf_size = PKTSIZE_ALIGN;
p_rxdesc_curr->byte_cnt = 0;
rxdesc_curr_addr = (u32)&dmvgbe->p_rxdesc_curr;
writel((unsigned)p_rxdesc_curr->nxtdesc_p, rxdesc_curr_addr);
return rx_bytes;
}
#ifndef CONFIG_DM_ETH
static int mvgbe_recv(struct eth_device *dev)
{
struct mvgbe_device *dmvgbe = to_mvgbe(dev);
uchar *packet;
int ret;
ret = __mvgbe_recv(dmvgbe, &packet);
if (ret < 0)
return ret;
net_process_received_packet(packet, ret);
return 0;
}
#endif
#if defined(CONFIG_PHYLIB) || defined(CONFIG_DM_ETH)
#if defined(CONFIG_DM_ETH)
static struct phy_device *__mvgbe_phy_init(struct udevice *dev,
struct mii_dev *bus,
phy_interface_t phy_interface,
int phyid)
#else
static struct phy_device *__mvgbe_phy_init(struct eth_device *dev,
struct mii_dev *bus,
phy_interface_t phy_interface,
int phyid)
#endif
{
struct phy_device *phydev;
/* Set phy address of the port */
miiphy_write(dev->name, MV_PHY_ADR_REQUEST, MV_PHY_ADR_REQUEST,
phyid);
phydev = phy_connect(bus, phyid, dev, phy_interface);
if (!phydev) {
printf("phy_connect failed\n");
return NULL;
}
phy_config(phydev);
phy_startup(phydev);
return phydev;
}
#endif /* CONFIG_PHYLIB || CONFIG_DM_ETH */
#if defined(CONFIG_PHYLIB) && !defined(CONFIG_DM_ETH)
int mvgbe_phylib_init(struct eth_device *dev, int phyid)
{
struct mii_dev *bus;
struct phy_device *phydev;
int ret;
bus = mdio_alloc();
if (!bus) {
printf("mdio_alloc failed\n");
return -ENOMEM;
}
bus->read = smi_reg_read;
bus->write = smi_reg_write;
strcpy(bus->name, dev->name);
ret = mdio_register(bus);
if (ret) {
printf("mdio_register failed\n");
free(bus);
return -ENOMEM;
}
phydev = __mvgbe_phy_init(dev, bus, PHY_INTERFACE_MODE_RGMII, phyid);
if (!phydev)
return -ENODEV;
return 0;
}
#endif
static int mvgbe_alloc_buffers(struct mvgbe_device *dmvgbe)
{
dmvgbe->p_rxdesc = memalign(PKTALIGN,
MV_RXQ_DESC_ALIGNED_SIZE * RINGSZ + 1);
if (!dmvgbe->p_rxdesc)
goto error1;
dmvgbe->p_rxbuf = memalign(PKTALIGN,
RINGSZ * PKTSIZE_ALIGN + 1);
if (!dmvgbe->p_rxbuf)
goto error2;
dmvgbe->p_aligned_txbuf = memalign(8, PKTSIZE_ALIGN);
if (!dmvgbe->p_aligned_txbuf)
goto error3;
dmvgbe->p_txdesc = memalign(PKTALIGN, sizeof(struct mvgbe_txdesc) + 1);
if (!dmvgbe->p_txdesc)
goto error4;
return 0;
error4:
free(dmvgbe->p_aligned_txbuf);
error3:
free(dmvgbe->p_rxbuf);
error2:
free(dmvgbe->p_rxdesc);
error1:
return -ENOMEM;
}
#ifndef CONFIG_DM_ETH
int mvgbe_initialize(struct bd_info *bis)
{
struct mvgbe_device *dmvgbe;
struct eth_device *dev;
int devnum;
int ret;
u8 used_ports[MAX_MVGBE_DEVS] = CONFIG_MVGBE_PORTS;
for (devnum = 0; devnum < MAX_MVGBE_DEVS; devnum++) {
/*skip if port is configured not to use */
if (used_ports[devnum] == 0)
continue;
dmvgbe = malloc(sizeof(struct mvgbe_device));
if (!dmvgbe)
return -ENOMEM;
memset(dmvgbe, 0, sizeof(struct mvgbe_device));
ret = mvgbe_alloc_buffers(dmvgbe);
if (ret) {
printf("Err.. %s Failed to allocate memory\n",
__func__);
free(dmvgbe);
return ret;
}
dev = &dmvgbe->dev;
/* must be less than sizeof(dev->name) */
sprintf(dev->name, "egiga%d", devnum);
switch (devnum) {
case 0:
dmvgbe->regs = (void *)MVGBE0_BASE;
break;
#if defined(MVGBE1_BASE)
case 1:
dmvgbe->regs = (void *)MVGBE1_BASE;
break;
#endif
default: /* this should never happen */
printf("Err..(%s) Invalid device number %d\n",
__func__, devnum);
return -1;
}
dev->init = (void *)mvgbe_init;
dev->halt = (void *)mvgbe_halt;
dev->send = (void *)mvgbe_send;
dev->recv = (void *)mvgbe_recv;
dev->write_hwaddr = (void *)mvgbe_write_hwaddr;
eth_register(dev);
#if defined(CONFIG_PHYLIB)
mvgbe_phylib_init(dev, PHY_BASE_ADR + devnum);
#elif defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
int retval;
struct mii_dev *mdiodev = mdio_alloc();
if (!mdiodev)
return -ENOMEM;
strlcpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
mdiodev->read = smi_reg_read;
mdiodev->write = smi_reg_write;
retval = mdio_register(mdiodev);
if (retval < 0)
return retval;
/* Set phy address of the port */
miiphy_write(dev->name, MV_PHY_ADR_REQUEST,
MV_PHY_ADR_REQUEST, PHY_BASE_ADR + devnum);
#endif
}
return 0;
}
#endif
#ifdef CONFIG_DM_ETH
static int mvgbe_port_is_fixed_link(struct mvgbe_device *dmvgbe)
{
return dmvgbe->phyaddr > PHY_MAX_ADDR;
}
static int mvgbe_start(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct mvgbe_device *dmvgbe = dev_get_priv(dev);
int ret;
ret = __mvgbe_init(dmvgbe, pdata->enetaddr, dev->name);
if (ret)
return ret;
if (!mvgbe_port_is_fixed_link(dmvgbe)) {
dmvgbe->phydev = __mvgbe_phy_init(dev, dmvgbe->bus,
dmvgbe->phy_interface,
dmvgbe->phyaddr);
if (!dmvgbe->phydev)
return -ENODEV;
}
return 0;
}
static int mvgbe_send(struct udevice *dev, void *packet, int length)
{
struct mvgbe_device *dmvgbe = dev_get_priv(dev);
return __mvgbe_send(dmvgbe, packet, length);
}
static int mvgbe_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct mvgbe_device *dmvgbe = dev_get_priv(dev);
return __mvgbe_recv(dmvgbe, packetp);
}
static void mvgbe_stop(struct udevice *dev)
{
struct mvgbe_device *dmvgbe = dev_get_priv(dev);
__mvgbe_halt(dmvgbe);
}
static int mvgbe_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct mvgbe_device *dmvgbe = dev_get_priv(dev);
struct mii_dev *bus;
int ret;
ret = mvgbe_alloc_buffers(dmvgbe);
if (ret)
return ret;
dmvgbe->regs = (void __iomem *)pdata->iobase;
bus = mdio_alloc();
if (!bus) {
printf("Failed to allocate MDIO bus\n");
return -ENOMEM;
}
bus->read = smi_reg_read;
bus->write = smi_reg_write;
snprintf(bus->name, sizeof(bus->name), dev->name);
bus->priv = dmvgbe;
dmvgbe->bus = bus;
ret = mdio_register(bus);
if (ret < 0)
return ret;
return 0;
}
static const struct eth_ops mvgbe_ops = {
.start = mvgbe_start,
.send = mvgbe_send,
.recv = mvgbe_recv,
.stop = mvgbe_stop,
.write_hwaddr = mvgbe_write_hwaddr,
};
static int mvgbe_of_to_plat(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct mvgbe_device *dmvgbe = dev_get_priv(dev);
void *blob = (void *)gd->fdt_blob;
int node = dev_of_offset(dev);
const char *phy_mode;
int fl_node;
int pnode;
unsigned long addr;
pdata->iobase = dev_read_addr(dev);
pdata->phy_interface = -1;
pnode = fdt_node_offset_by_compatible(blob, node,
"marvell,kirkwood-eth-port");
/* Get phy-mode / phy_interface from DT */
phy_mode = fdt_getprop(gd->fdt_blob, pnode, "phy-mode", NULL);
if (phy_mode)
pdata->phy_interface = phy_get_interface_by_name(phy_mode);
else
pdata->phy_interface = PHY_INTERFACE_MODE_GMII;
dmvgbe->phy_interface = pdata->phy_interface;
/* fetch 'fixed-link' property */
fl_node = fdt_subnode_offset(blob, pnode, "fixed-link");
if (fl_node != -FDT_ERR_NOTFOUND) {
/* set phy_addr to invalid value for fixed link */
dmvgbe->phyaddr = PHY_MAX_ADDR + 1;
dmvgbe->duplex = fdtdec_get_bool(blob, fl_node, "full-duplex");
dmvgbe->speed = fdtdec_get_int(blob, fl_node, "speed", 0);
} else {
/* Now read phyaddr from DT */
addr = fdtdec_lookup_phandle(blob, pnode, "phy-handle");
if (addr > 0)
dmvgbe->phyaddr = fdtdec_get_int(blob, addr, "reg", 0);
}
return 0;
}
static const struct udevice_id mvgbe_ids[] = {
{ .compatible = "marvell,kirkwood-eth" },
{ }
};
U_BOOT_DRIVER(mvgbe) = {
.name = "mvgbe",
.id = UCLASS_ETH,
.of_match = mvgbe_ids,
.of_to_plat = mvgbe_of_to_plat,
.probe = mvgbe_probe,
.ops = &mvgbe_ops,
.priv_auto = sizeof(struct mvgbe_device),
.plat_auto = sizeof(struct eth_pdata),
};
#endif /* CONFIG_DM_ETH */
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