Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-09-22 15:42:04 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/drivers/net/smc911x.c
Marek Vasut eb46efa381 net: smc911x: Inline all functions from header file 
Inline all the functions from the header file, as they are not used
outside of the driver or the standalone EEPROM example.

Note that this does introduce considerable amount of duplication in
the standalone EEPROM example, however that one has to be rewritten
anyway, roughly such that the SMC911x driver would expose DM EEPROM
interface and the standalone example would use that.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-05-01 12:35:21 +02:00

476 lines
11 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0+
/*
* SMSC LAN9[12]1[567] Network driver
*
* (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <net.h>
#include <miiphy.h>
#include <linux/types.h>
#include "smc911x.h"
struct chip_id {
u16 id;
char *name;
};
static const struct chip_id chip_ids[] = {
{ CHIP_89218, "LAN89218" },
{ CHIP_9115, "LAN9115" },
{ CHIP_9116, "LAN9116" },
{ CHIP_9117, "LAN9117" },
{ CHIP_9118, "LAN9118" },
{ CHIP_9211, "LAN9211" },
{ CHIP_9215, "LAN9215" },
{ CHIP_9216, "LAN9216" },
{ CHIP_9217, "LAN9217" },
{ CHIP_9218, "LAN9218" },
{ CHIP_9220, "LAN9220" },
{ CHIP_9221, "LAN9221" },
{ 0, NULL },
};
#define DRIVERNAME "smc911x"
#if defined (CONFIG_SMC911X_32_BIT) && \
defined (CONFIG_SMC911X_16_BIT)
#error "SMC911X: Only one of CONFIG_SMC911X_32_BIT and \
CONFIG_SMC911X_16_BIT shall be set"
#endif
#if defined (CONFIG_SMC911X_32_BIT)
static inline u32 __smc911x_reg_read(struct eth_device *dev, u32 offset)
{
return *(volatile u32*)(dev->iobase + offset);
}
u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
__attribute__((weak, alias("__smc911x_reg_read")));
static inline void __smc911x_reg_write(struct eth_device *dev,
u32 offset, u32 val)
{
*(volatile u32*)(dev->iobase + offset) = val;
}
void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
__attribute__((weak, alias("__smc911x_reg_write")));
#elif defined (CONFIG_SMC911X_16_BIT)
static inline u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
{
volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
}
static inline void smc911x_reg_write(struct eth_device *dev,
u32 offset, u32 val)
{
*(volatile u16 *)(dev->iobase + offset) = (u16)val;
*(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);
}
#else
#error "SMC911X: undefined bus width"
#endif /* CONFIG_SMC911X_16_BIT */
static u32 smc911x_get_mac_csr(struct eth_device *dev, u8 reg)
{
while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
;
smc911x_reg_write(dev, MAC_CSR_CMD,
MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
;
return smc911x_reg_read(dev, MAC_CSR_DATA);
}
static void smc911x_set_mac_csr(struct eth_device *dev, u8 reg, u32 data)
{
while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
;
smc911x_reg_write(dev, MAC_CSR_DATA, data);
smc911x_reg_write(dev, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
;
}
static int smc911x_detect_chip(struct eth_device *dev)
{
unsigned long val, i;
val = smc911x_reg_read(dev, BYTE_TEST);
if (val == 0xffffffff) {
/* Special case -- no chip present */
return -1;
} else if (val != 0x87654321) {
printf(DRIVERNAME ": Invalid chip endian 0x%08lx\n", val);
return -1;
}
val = smc911x_reg_read(dev, ID_REV) >> 16;
for (i = 0; chip_ids[i].id != 0; i++) {
if (chip_ids[i].id == val) break;
}
if (!chip_ids[i].id) {
printf(DRIVERNAME ": Unknown chip ID %04lx\n", val);
return -1;
}
dev->priv = (void *)&chip_ids[i];
return 0;
}
static void smc911x_reset(struct eth_device *dev)
{
int timeout;
/*
* Take out of PM setting first
* Device is already wake up if PMT_CTRL_READY bit is set
*/
if ((smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY) == 0) {
/* Write to the bytetest will take out of powerdown */
smc911x_reg_write(dev, BYTE_TEST, 0x0);
timeout = 10;
while (timeout-- &&
!(smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY))
udelay(10);
if (timeout < 0) {
printf(DRIVERNAME
": timeout waiting for PM restore\n");
return;
}
}
/* Disable interrupts */
smc911x_reg_write(dev, INT_EN, 0);
smc911x_reg_write(dev, HW_CFG, HW_CFG_SRST);
timeout = 1000;
while (timeout-- && smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
udelay(10);
if (timeout < 0) {
printf(DRIVERNAME ": reset timeout\n");
return;
}
/* Reset the FIFO level and flow control settings */
smc911x_set_mac_csr(dev, FLOW, FLOW_FCPT | FLOW_FCEN);
smc911x_reg_write(dev, AFC_CFG, 0x0050287F);
/* Set to LED outputs */
smc911x_reg_write(dev, GPIO_CFG, 0x70070000);
}
static void smc911x_handle_mac_address(struct eth_device *dev)
{
unsigned long addrh, addrl;
uchar *m = dev->enetaddr;
addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
addrh = m[4] | (m[5] << 8);
smc911x_set_mac_csr(dev, ADDRL, addrl);
smc911x_set_mac_csr(dev, ADDRH, addrh);
printf(DRIVERNAME ": MAC %pM\n", m);
}
static int smc911x_eth_phy_read(struct eth_device *dev,
u8 phy, u8 reg, u16 *val)
{
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
;
smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
MII_ACC_MII_BUSY);
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
;
*val = smc911x_get_mac_csr(dev, MII_DATA);
return 0;
}
static int smc911x_eth_phy_write(struct eth_device *dev,
u8 phy, u8 reg, u16 val)
{
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
;
smc911x_set_mac_csr(dev, MII_DATA, val);
smc911x_set_mac_csr(dev, MII_ACC,
phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
;
return 0;
}
static int smc911x_phy_reset(struct eth_device *dev)
{
u32 reg;
reg = smc911x_reg_read(dev, PMT_CTRL);
reg &= ~0xfffff030;
reg |= PMT_CTRL_PHY_RST;
smc911x_reg_write(dev, PMT_CTRL, reg);
mdelay(100);
return 0;
}
static void smc911x_phy_configure(struct eth_device *dev)
{
int timeout;
u16 status;
smc911x_phy_reset(dev);
smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET);
mdelay(1);
smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1);
smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE |
BMCR_ANRESTART);
timeout = 5000;
do {
mdelay(1);
if ((timeout--) == 0)
goto err_out;
if (smc911x_eth_phy_read(dev, 1, MII_BMSR, &status) != 0)
goto err_out;
} while (!(status & BMSR_LSTATUS));
printf(DRIVERNAME ": phy initialized\n");
return;
err_out:
printf(DRIVERNAME ": autonegotiation timed out\n");
}
static void smc911x_enable(struct eth_device *dev)
{
/* Enable TX */
smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
/* no padding to start of packets */
smc911x_reg_write(dev, RX_CFG, 0);
smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
MAC_CR_HBDIS);
}
static int smc911x_init(struct eth_device *dev, bd_t * bd)
{
struct chip_id *id = dev->priv;
printf(DRIVERNAME ": detected %s controller\n", id->name);
smc911x_reset(dev);
/* Configure the PHY, initialize the link state */
smc911x_phy_configure(dev);
smc911x_handle_mac_address(dev);
/* Turn on Tx + Rx */
smc911x_enable(dev);
return 0;
}
static int smc911x_send(struct eth_device *dev, void *packet, int length)
{
u32 *data = (u32*)packet;
u32 tmplen;
u32 status;
smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
TX_CMD_A_INT_LAST_SEG | length);
smc911x_reg_write(dev, TX_DATA_FIFO, length);
tmplen = (length + 3) / 4;
while (tmplen--)
smc911x_reg_write(dev, TX_DATA_FIFO, *data++);
/* wait for transmission */
while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
TX_FIFO_INF_TSUSED) >> 16));
/* get status. Ignore 'no carrier' error, it has no meaning for
* full duplex operation
*/
status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
(TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
if (!status)
return 0;
printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
status & TX_STS_LOC ? "TX_STS_LOC " : "",
status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
return -1;
}
static void smc911x_halt(struct eth_device *dev)
{
smc911x_reset(dev);
smc911x_handle_mac_address(dev);
}
static int smc911x_recv(struct eth_device *dev)
{
u32 *data = (u32 *)net_rx_packets[0];
u32 pktlen, tmplen;
u32 status;
if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
status = smc911x_reg_read(dev, RX_STATUS_FIFO);
pktlen = (status & RX_STS_PKT_LEN) >> 16;
smc911x_reg_write(dev, RX_CFG, 0);
tmplen = (pktlen + 3) / 4;
while (tmplen--)
*data++ = smc911x_reg_read(dev, RX_DATA_FIFO);
if (status & RX_STS_ES)
printf(DRIVERNAME
": dropped bad packet. Status: 0x%08x\n",
status);
else
net_process_received_packet(net_rx_packets[0], pktlen);
}
return 0;
}
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
/* wrapper for smc911x_eth_phy_read */
static int smc911x_miiphy_read(struct mii_dev *bus, int phy, int devad,
int reg)
{
struct eth_device *dev = eth_get_dev_by_name(bus->name);
u16 val = 0;
int ret;
if (!dev)
return -ENODEV;
ret = smc911x_eth_phy_read(dev, phy, reg, &val);
if (ret < 0)
return ret;
return val;
}
/* wrapper for smc911x_eth_phy_write */
static int smc911x_miiphy_write(struct mii_dev *bus, int phy, int devad,
int reg, u16 val)
{
struct eth_device *dev = eth_get_dev_by_name(bus->name);
if (!dev)
return -ENODEV;
return smc911x_eth_phy_write(dev, phy, reg, val);
}
static int smc911x_initialize_mii(struct eth_device *dev)
{
struct mii_dev *mdiodev = mdio_alloc();
int ret;
if (!mdiodev)
return -ENOMEM;
strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
mdiodev->read = smc911x_miiphy_read;
mdiodev->write = smc911x_miiphy_write;
ret = mdio_register(mdiodev);
if (ret < 0) {
mdio_free(mdiodev);
return ret;
}
return 0;
}
#else
static int smc911x_initialize_mii(struct eth_device *dev)
{
return 0;
}
#endif
int smc911x_initialize(u8 dev_num, int base_addr)
{
unsigned long addrl, addrh;
struct eth_device *dev;
int ret;
dev = calloc(1, sizeof(*dev));
if (!dev)
return -ENOMEM;
dev->iobase = base_addr;
/* Try to detect chip. Will fail if not present. */
ret = smc911x_detect_chip(dev);
if (ret) {
ret = 0; /* Card not detected is not an error */
goto err_detect;
}
addrh = smc911x_get_mac_csr(dev, ADDRH);
addrl = smc911x_get_mac_csr(dev, ADDRL);
if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
/* address is obtained from optional eeprom */
dev->enetaddr[0] = addrl;
dev->enetaddr[1] = addrl >> 8;
dev->enetaddr[2] = addrl >> 16;
dev->enetaddr[3] = addrl >> 24;
dev->enetaddr[4] = addrh;
dev->enetaddr[5] = addrh >> 8;
}
dev->init = smc911x_init;
dev->halt = smc911x_halt;
dev->send = smc911x_send;
dev->recv = smc911x_recv;
sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
eth_register(dev);
ret = smc911x_initialize_mii(dev);
if (ret)
goto err_mii;
return 1;
err_mii:
eth_unregister(dev);
err_detect:
free(dev);
return ret;
}
Reference in a new issue View git blame Copy permalink