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Commit 6a27a6c3 authored by David S. Miller's avatar David S. Miller
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Revert "net: Microchip encx24j600 driver" 

This reverts commit 04fbfce7.
parent c664bc6d
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drivers/net/ethernet/microchip/Kconfig
View file @ 6a27a6c3
......@@ -33,13 +33,4 @@ config ENC28J60_WRITEVERIFY
Enable the verify after the buffer write useful for debugging purpose.
If unsure, say N.
config ENCX24J600
tristate "ENCX24J600 support"
depends on SPI
---help---
Support for the Microchip ENC424J600 ethernet chip.
To compile this driver as a module, choose M here. The module will be
called enc424j600.
endif # NET_VENDOR_MICROCHIP
drivers/net/ethernet/microchip/Makefile
View file @ 6a27a6c3
......@@ -3,4 +3,3 @@
#
obj-$(CONFIG_ENC28J60) += enc28j60.o
obj-$(CONFIG_ENCX24J600) += encx24j600.o encx24j600-regmap.o
drivers/net/ethernet/microchip/encx24j600-regmap.c deleted 100644 → 0
View file @ c664bc6d
/**
* Register map access API - ENCX24J600 support
*
* Copyright 2015 Gridpoint
*
* Author: Jon Ringle <jringle@gridpoint.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include "encx24j600_hw.h"
static inline bool is_bits_set(int value, int mask)
{
return (value & mask) == mask;
}
static int encx24j600_switch_bank(struct encx24j600_context *ctx,
int bank)
{
int ret = 0;
int bank_opcode = BANK_SELECT(bank);
ret = spi_write(ctx->spi, &bank_opcode, 1);
if (ret == 0)
ctx->bank = bank;
return ret;
}
static int encx24j600_cmdn(struct encx24j600_context *ctx, u8 opcode,
const void *buf, size_t len)
{
struct spi_message m;
struct spi_transfer t[2] = { { .tx_buf = &opcode, .len = 1, },
{ .tx_buf = buf, .len = len }, };
spi_message_init(&m);
spi_message_add_tail(&t[0], &m);
spi_message_add_tail(&t[1], &m);
return spi_sync(ctx->spi, &m);
}
static void regmap_lock_mutex(void *context)
{
struct encx24j600_context *ctx = context;
mutex_lock(&ctx->mutex);
}
static void regmap_unlock_mutex(void *context)
{
struct encx24j600_context *ctx = context;
mutex_unlock(&ctx->mutex);
}
static int regmap_encx24j600_sfr_read(void *context, u8 reg, u8 *val,
size_t len)
{
struct encx24j600_context *ctx = context;
u8 banked_reg = reg & ADDR_MASK;
u8 bank = ((reg & BANK_MASK) >> BANK_SHIFT);
u8 cmd = RCRU;
int ret = 0;
int i = 0;
u8 tx_buf[2];
if (reg < 0x80) {
cmd = RCRCODE | banked_reg;
if ((banked_reg < 0x16) && (ctx->bank != bank))
ret = encx24j600_switch_bank(ctx, bank);
if (unlikely(ret))
return ret;
} else {
/* Translate registers that are more effecient using
* 3-byte SPI commands
*/
switch (reg) {
case EGPRDPT:
cmd = RGPRDPT; break;
case EGPWRPT:
cmd = RGPWRPT; break;
case ERXRDPT:
cmd = RRXRDPT; break;
case ERXWRPT:
cmd = RRXWRPT; break;
case EUDARDPT:
cmd = RUDARDPT; break;
case EUDAWRPT:
cmd = RUDAWRPT; break;
case EGPDATA:
case ERXDATA:
case EUDADATA:
default:
return -EINVAL;
}
}
tx_buf[i++] = cmd;
if (cmd == RCRU)
tx_buf[i++] = reg;
ret = spi_write_then_read(ctx->spi, tx_buf, i, val, len);
return ret;
}
static int regmap_encx24j600_sfr_update(struct encx24j600_context *ctx,
u8 reg, u8 *val, size_t len,
u8 unbanked_cmd, u8 banked_code)
{
u8 banked_reg = reg & ADDR_MASK;
u8 bank = ((reg & BANK_MASK) >> BANK_SHIFT);
u8 cmd = unbanked_cmd;
struct spi_message m;
struct spi_transfer t[3] = { { .tx_buf = &cmd, .len = sizeof(cmd), },
{ .tx_buf = &reg, .len = sizeof(reg), },
{ .tx_buf = val, .len = len }, };
if (reg < 0x80) {
int ret = 0;
cmd = banked_code | banked_reg;
if ((banked_reg < 0x16) && (ctx->bank != bank))
ret = encx24j600_switch_bank(ctx, bank);
if (unlikely(ret))
return ret;
} else {
/* Translate registers that are more effecient using
* 3-byte SPI commands
*/
switch (reg) {
case EGPRDPT:
cmd = WGPRDPT; break;
case EGPWRPT:
cmd = WGPWRPT; break;
case ERXRDPT:
cmd = WRXRDPT; break;
case ERXWRPT:
cmd = WRXWRPT; break;
case EUDARDPT:
cmd = WUDARDPT; break;
case EUDAWRPT:
cmd = WUDAWRPT; break;
case EGPDATA:
case ERXDATA:
case EUDADATA:
default:
return -EINVAL;
}
}
spi_message_init(&m);
spi_message_add_tail(&t[0], &m);
if (cmd == unbanked_cmd) {
t[1].tx_buf = &reg;
spi_message_add_tail(&t[1], &m);
}
spi_message_add_tail(&t[2], &m);
return spi_sync(ctx->spi, &m);
}
static int regmap_encx24j600_sfr_write(void *context, u8 reg, u8 *val,
size_t len)
{
struct encx24j600_context *ctx = context;
return regmap_encx24j600_sfr_update(ctx, reg, val, len, WCRU, WCRCODE);
}
static int regmap_encx24j600_sfr_set_bits(struct encx24j600_context *ctx,
u8 reg, u8 val)
{
return regmap_encx24j600_sfr_update(ctx, reg, &val, 1, BFSU, BFSCODE);
}
static int regmap_encx24j600_sfr_clr_bits(struct encx24j600_context *ctx,
u8 reg, u8 val)
{
return regmap_encx24j600_sfr_update(ctx, reg, &val, 1, BFCU, BFCCODE);
}
static int regmap_encx24j600_reg_update_bits(void *context, unsigned int reg,
unsigned int mask,
unsigned int val, bool *change,
bool force_write)
{
struct encx24j600_context *ctx = context;
int ret = 0;
unsigned int set_mask = mask & val;
unsigned int clr_mask = mask & ~val;
if (change)
*change = false;
if ((reg >= 0x40 && reg < 0x6c) || reg >= 0x80) {
/* Must do read/modify/write cycles for
* MAC/MII regs or Unbanked SFR regs
*/
u16 tmp, orig;
ret = regmap_encx24j600_sfr_read(context, reg, (u8 *)&orig,
sizeof(orig));
if (ret != 0)
return ret;
tmp = orig & ~mask;
tmp |= val & mask;
if (force_write || (tmp != orig)) {
ret = regmap_encx24j600_sfr_write(context, reg,
(u8 *)&tmp,
sizeof(tmp));
if (change)
*change = true;
} else if (change) {
*change = false;
}
return ret;
}
if (set_mask & 0xff) {
ret = regmap_encx24j600_sfr_set_bits(ctx, reg, set_mask);
if (ret == 0 && change)
*change = true;
}
set_mask = (set_mask & 0xff00) >> 8;
if ((set_mask & 0xff) && (ret == 0)) {
ret = regmap_encx24j600_sfr_set_bits(ctx, reg + 1, set_mask);
if (ret == 0 && change)
*change = true;
}
if ((clr_mask & 0xff) && (ret == 0)) {
ret = regmap_encx24j600_sfr_clr_bits(ctx, reg, clr_mask);
if (ret == 0 && change)
*change = true;
}
clr_mask = (clr_mask & 0xff00) >> 8;
if ((clr_mask & 0xff) && (ret == 0)) {
ret = regmap_encx24j600_sfr_clr_bits(ctx, reg + 1, clr_mask);
if (ret == 0 && change)
*change = true;
}
return ret;
}
int regmap_encx24j600_spi_write(void *context, u8 reg, const u8 *data,
size_t count)
{
struct encx24j600_context *ctx = context;
if (reg < 0xc0)
return encx24j600_cmdn(ctx, reg, data, count);
else
/* SPI 1-byte command. Ignore data */
return spi_write(ctx->spi, &reg, 1);
}
EXPORT_SYMBOL_GPL(regmap_encx24j600_spi_write);
int regmap_encx24j600_spi_read(void *context, u8 reg, u8 *data, size_t count)
{
struct encx24j600_context *ctx = context;
if (reg == RBSEL && count > 1)
count = 1;
return spi_write_then_read(ctx->spi, &reg, sizeof(reg), data, count);
}
EXPORT_SYMBOL_GPL(regmap_encx24j600_spi_read);
static int regmap_encx24j600_write(void *context, const void *data,
size_t len)
{
u8 *dout = (u8 *)data;
u8 reg = dout[0];
++dout;
--len;
if (reg > 0xa0)
return regmap_encx24j600_spi_write(context, reg, dout, len);
if (len > 2)
return -EINVAL;
return regmap_encx24j600_sfr_write(context, reg, dout, len);
}
static int regmap_encx24j600_read(void *context,
const void *reg_buf, size_t reg_size,
void *val, size_t val_size)
{
u8 reg = *(const u8 *)reg_buf;
if (reg_size != 1) {
pr_err("%s: reg=%02x reg_size=%zu\n", __func__, reg, reg_size);
return -EINVAL;
}
if (reg > 0xa0)
return regmap_encx24j600_spi_read(context, reg, val, val_size);
if (val_size > 2) {
pr_err("%s: reg=%02x val_size=%zu\n", __func__, reg, val_size);
return -EINVAL;
}
return regmap_encx24j600_sfr_read(context, reg, val, val_size);
}
static bool encx24j600_regmap_readable(struct device *dev, unsigned int reg)
{
if ((reg < 0x36) ||
((reg >= 0x40) && (reg < 0x4c)) ||
((reg >= 0x52) && (reg < 0x56)) ||
((reg >= 0x60) && (reg < 0x66)) ||
((reg >= 0x68) && (reg < 0x80)) ||
((reg >= 0x86) && (reg < 0x92)) ||
(reg == 0xc8))
return true;
else
return false;
}
static bool encx24j600_regmap_writeable(struct device *dev, unsigned int reg)
{
if ((reg < 0x12) ||
((reg >= 0x14) && (reg < 0x1a)) ||
((reg >= 0x1c) && (reg < 0x36)) ||
((reg >= 0x40) && (reg < 0x4c)) ||
((reg >= 0x52) && (reg < 0x56)) ||
((reg >= 0x60) && (reg < 0x68)) ||
((reg >= 0x6c) && (reg < 0x80)) ||
((reg >= 0x86) && (reg < 0x92)) ||
((reg >= 0xc0) && (reg < 0xc8)) ||
((reg >= 0xca) && (reg < 0xf0)))
return true;
else
return false;
}
static bool encx24j600_regmap_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case ERXHEAD:
case EDMACS:
case ETXSTAT:
case ETXWIRE:
case ECON1: /* Can be modified via single byte cmds */
case ECON2: /* Can be modified via single byte cmds */
case ESTAT:
case EIR: /* Can be modified via single byte cmds */
case MIRD:
case MISTAT:
return true;
default:
break;
}
return false;
}
static bool encx24j600_regmap_precious(struct device *dev, unsigned int reg)
{
/* single byte cmds are precious */
if (((reg >= 0xc0) && (reg < 0xc8)) ||
((reg >= 0xca) && (reg < 0xf0)))
return true;
else
return false;
}
static int regmap_encx24j600_phy_reg_read(void *context, unsigned int reg,
unsigned int *val)
{
struct encx24j600_context *ctx = context;
int ret;
unsigned int mistat;
reg = MIREGADR_VAL | (reg & PHREG_MASK);
ret = regmap_write(ctx->regmap, MIREGADR, reg);
if (unlikely(ret))
goto err_out;
ret = regmap_write(ctx->regmap, MICMD, MIIRD);
if (unlikely(ret))
goto err_out;
usleep_range(26, 100);
while ((ret = regmap_read(ctx->regmap, MISTAT, &mistat) != 0) &&
(mistat & BUSY))
cpu_relax();
if (unlikely(ret))
goto err_out;
ret = regmap_write(ctx->regmap, MICMD, 0);
if (unlikely(ret))
goto err_out;
ret = regmap_read(ctx->regmap, MIRD, val);
err_out:
if (ret)
pr_err("%s: error %d reading reg %02x\n", __func__, ret,
reg & PHREG_MASK);
return ret;
}
static int regmap_encx24j600_phy_reg_write(void *context, unsigned int reg,
unsigned int val)
{
struct encx24j600_context *ctx = context;
int ret;
unsigned int mistat;
reg = MIREGADR_VAL | (reg & PHREG_MASK);
ret = regmap_write(ctx->regmap, MIREGADR, reg);
if (unlikely(ret))
goto err_out;
ret = regmap_write(ctx->regmap, MIWR, val);
if (unlikely(ret))
goto err_out;
usleep_range(26, 100);
while ((ret = regmap_read(ctx->regmap, MISTAT, &mistat) != 0) &&
(mistat & BUSY))
cpu_relax();
err_out:
if (ret)
pr_err("%s: error %d writing reg %02x=%04x\n", __func__, ret,
reg & PHREG_MASK, val);
return ret;
}
static bool encx24j600_phymap_readable(struct device *dev, unsigned int reg)
{
switch (reg) {
case PHCON1:
case PHSTAT1:
case PHANA:
case PHANLPA:
case PHANE:
case PHCON2:
case PHSTAT2:
case PHSTAT3:
return true;
default:
return false;
}
}
static bool encx24j600_phymap_writeable(struct device *dev, unsigned int reg)
{
switch (reg) {
case PHCON1:
case PHCON2:
case PHANA:
return true;
case PHSTAT1:
case PHSTAT2:
case PHSTAT3:
case PHANLPA:
case PHANE:
default:
return false;
}
}
static bool encx24j600_phymap_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case PHSTAT1:
case PHSTAT2:
case PHSTAT3:
case PHANLPA:
case PHANE:
case PHCON2:
return true;
default:
return false;
}
}
static struct regmap_config regcfg = {
.name = "reg",
.reg_bits = 8,
.val_bits = 16,
.max_register = 0xee,
.reg_stride = 2,
.cache_type = REGCACHE_RBTREE,
.val_format_endian = REGMAP_ENDIAN_LITTLE,
.readable_reg = encx24j600_regmap_readable,
.writeable_reg = encx24j600_regmap_writeable,
.volatile_reg = encx24j600_regmap_volatile,
.precious_reg = encx24j600_regmap_precious,
.lock = regmap_lock_mutex,
.unlock = regmap_unlock_mutex,
};
static struct regmap_bus regmap_encx24j600 = {
.write = regmap_encx24j600_write,
.read = regmap_encx24j600_read,
.reg_update_bits = regmap_encx24j600_reg_update_bits,
};
static struct regmap_config phycfg = {
.name = "phy",
.reg_bits = 8,
.val_bits = 16,
.max_register = 0x1f,
.cache_type = REGCACHE_RBTREE,
.val_format_endian = REGMAP_ENDIAN_LITTLE,
.readable_reg = encx24j600_phymap_readable,
.writeable_reg = encx24j600_phymap_writeable,
.volatile_reg = encx24j600_phymap_volatile,
};
static struct regmap_bus phymap_encx24j600 = {
.reg_write = regmap_encx24j600_phy_reg_write,
.reg_read = regmap_encx24j600_phy_reg_read,
};
void devm_regmap_init_encx24j600(struct device *dev,
struct encx24j600_context *ctx)
{
mutex_init(&ctx->mutex);
regcfg.lock_arg = ctx;
ctx->regmap = devm_regmap_init(dev, &regmap_encx24j600, ctx, &regcfg);
ctx->phymap = devm_regmap_init(dev, &phymap_encx24j600, ctx, &phycfg);
}
EXPORT_SYMBOL_GPL(devm_regmap_init_encx24j600);
MODULE_LICENSE("GPL");
drivers/net/ethernet/microchip/encx24j600.c deleted 100644 → 0
View file @ c664bc6d
/**
* Microchip ENCX24J600 ethernet driver
*
* Copyright (C) 2015 Gridpoint
* Author: Jon Ringle <jringle@gridpoint.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.
*
*/
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/regmap.h>
#include <linux/skbuff.h>
#include <linux/spi/spi.h>
#include "encx24j600_hw.h"
#define DRV_NAME "encx24j600"
#define DRV_VERSION "1.0"
#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
/* SRAM memory layout:
*
* 0x0000-0x05ff TX buffers 1.5KB (1*1536) reside in the GP area in SRAM
* 0x0600-0x5fff RX buffers 22.5KB (15*1536) reside in the RX area in SRAM
*/
#define ENC_TX_BUF_START 0x0000U
#define ENC_RX_BUF_START 0x0600U
#define ENC_RX_BUF_END 0x5fffU
#define ENC_SRAM_SIZE 0x6000U
enum {
RXFILTER_NORMAL,
RXFILTER_MULTI,
RXFILTER_PROMISC
};
struct encx24j600_priv {
struct net_device *ndev;
struct mutex lock; /* device access lock */
struct encx24j600_context ctx;
struct sk_buff *tx_skb;
struct task_struct *kworker_task;
struct kthread_worker kworker;
struct kthread_work tx_work;
struct kthread_work setrx_work;
u16 next_packet;
bool hw_enabled;
bool full_duplex;
bool autoneg;
u16 speed;
int rxfilter;
u32 msg_enable;
};
static void dump_packet(const char *msg, int len, const char *data)
{
pr_debug(DRV_NAME ": %s - packet len:%d\n", msg, len);
print_hex_dump_bytes("pk data: ", DUMP_PREFIX_OFFSET, data, len);
}
static void encx24j600_dump_rsv(struct encx24j600_priv *priv, const char *msg,
struct rsv *rsv)
{
struct net_device *dev = priv->ndev;
netdev_info(dev, "RX packet Len:%d\n", rsv->len);
netdev_dbg(dev, "%s - NextPk: 0x%04x\n", msg,
rsv->next_packet);
netdev_dbg(dev, "RxOK: %d, DribbleNibble: %d\n",
RSV_GETBIT(rsv->rxstat, RSV_RXOK),
RSV_GETBIT(rsv->rxstat, RSV_DRIBBLENIBBLE));
netdev_dbg(dev, "CRCErr:%d, LenChkErr: %d, LenOutOfRange: %d\n",
RSV_GETBIT(rsv->rxstat, RSV_CRCERROR),
RSV_GETBIT(rsv->rxstat, RSV_LENCHECKERR),
RSV_GETBIT(rsv->rxstat, RSV_LENOUTOFRANGE));
netdev_dbg(dev, "Multicast: %d, Broadcast: %d, LongDropEvent: %d, CarrierEvent: %d\n",
RSV_GETBIT(rsv->rxstat, RSV_RXMULTICAST),
RSV_GETBIT(rsv->rxstat, RSV_RXBROADCAST),
RSV_GETBIT(rsv->rxstat, RSV_RXLONGEVDROPEV),
RSV_GETBIT(rsv->rxstat, RSV_CARRIEREV));
netdev_dbg(dev, "ControlFrame: %d, PauseFrame: %d, UnknownOp: %d, VLanTagFrame: %d\n",
RSV_GETBIT(rsv->rxstat, RSV_RXCONTROLFRAME),
RSV_GETBIT(rsv->rxstat, RSV_RXPAUSEFRAME),
RSV_GETBIT(rsv->rxstat, RSV_RXUNKNOWNOPCODE),
RSV_GETBIT(rsv->rxstat, RSV_RXTYPEVLAN));
}
static u16 encx24j600_read_reg(struct encx24j600_priv *priv, u8 reg)
{
struct net_device *dev = priv->ndev;
unsigned int val = 0;
int ret = regmap_read(priv->ctx.regmap, reg, &val);
if (unlikely(ret))
netif_err(priv, drv, dev, "%s: error %d reading reg %02x\n",
__func__, ret, reg);
return val;
}
static void encx24j600_write_reg(struct encx24j600_priv *priv, u8 reg, u16 val)
{
struct net_device *dev = priv->ndev;
int ret = regmap_write(priv->ctx.regmap, reg, val);
if (unlikely(ret))
netif_err(priv, drv, dev, "%s: error %d writing reg %02x=%04x\n",
__func__, ret, reg, val);
}
static void encx24j600_update_reg(struct encx24j600_priv *priv, u8 reg,
u16 mask, u16 val)
{
struct net_device *dev = priv->ndev;
int ret = regmap_update_bits(priv->ctx.regmap, reg, mask, val);
if (unlikely(ret))
netif_err(priv, drv, dev, "%s: error %d updating reg %02x=%04x~%04x\n",
__func__, ret, reg, val, mask);
}
static u16 encx24j600_read_phy(struct encx24j600_priv *priv, u8 reg)
{
struct net_device *dev = priv->ndev;
unsigned int val = 0;
int ret = regmap_read(priv->ctx.phymap, reg, &val);
if (unlikely(ret))
netif_err(priv, drv, dev, "%s: error %d reading %02x\n",
__func__, ret, reg);
return val;
}
static void encx24j600_write_phy(struct encx24j600_priv *priv, u8 reg, u16 val)
{
struct net_device *dev = priv->ndev;
int ret = regmap_write(priv->ctx.phymap, reg, val);
if (unlikely(ret))
netif_err(priv, drv, dev, "%s: error %d writing reg %02x=%04x\n",
__func__, ret, reg, val);
}
static void encx24j600_clr_bits(struct encx24j600_priv *priv, u8 reg, u16 mask)
{
encx24j600_update_reg(priv, reg, mask, 0);
}
static void encx24j600_set_bits(struct encx24j600_priv *priv, u8 reg, u16 mask)
{
encx24j600_update_reg(priv, reg, mask, mask);
}
static void encx24j600_cmd(struct encx24j600_priv *priv, u8 cmd)
{
struct net_device *dev = priv->ndev;
int ret = regmap_write(priv->ctx.regmap, cmd, 0);
if (unlikely(ret))
netif_err(priv, drv, dev, "%s: error %d with cmd %02x\n",
__func__, ret, cmd);
}
static int encx24j600_raw_read(struct encx24j600_priv *priv, u8 reg, u8 *data,
size_t count)
{
int ret;
mutex_lock(&priv->ctx.mutex);
ret = regmap_encx24j600_spi_read(&priv->ctx, reg, data, count);
mutex_unlock(&priv->ctx.mutex);
return ret;
}
static int encx24j600_raw_write(struct encx24j600_priv *priv, u8 reg,
const u8 *data, size_t count)
{
int ret;
mutex_lock(&priv->ctx.mutex);
ret = regmap_encx24j600_spi_write(&priv->ctx, reg, data, count);
mutex_unlock(&priv->ctx.mutex);
return ret;
}
static void encx24j600_update_phcon1(struct encx24j600_priv *priv)
{
u16 phcon1 = encx24j600_read_phy(priv, PHCON1);
if (priv->autoneg == AUTONEG_ENABLE) {
phcon1 |= ANEN | RENEG;
} else {
phcon1 &= ~ANEN;
if (priv->speed == SPEED_100)
phcon1 |= SPD100;
else
phcon1 &= ~SPD100;
if (priv->full_duplex)
phcon1 |= PFULDPX;
else
phcon1 &= ~PFULDPX;
}
encx24j600_write_phy(priv, PHCON1, phcon1);
}
/* Waits for autonegotiation to complete. */
static int encx24j600_wait_for_autoneg(struct encx24j600_priv *priv)
{
struct net_device *dev = priv->ndev;
unsigned long timeout = jiffies + msecs_to_jiffies(2000);
u16 phstat1;
u16 estat;
int ret = 0;
phstat1 = encx24j600_read_phy(priv, PHSTAT1);
while ((phstat1 & ANDONE) == 0) {
if (time_after(jiffies, timeout)) {
u16 phstat3;
netif_notice(priv, drv, dev, "timeout waiting for autoneg done\n");
priv->autoneg = AUTONEG_DISABLE;
phstat3 = encx24j600_read_phy(priv, PHSTAT3);
priv->speed = (phstat3 & PHY3SPD100)
? SPEED_100 : SPEED_10;
priv->full_duplex = (phstat3 & PHY3DPX) ? 1 : 0;
encx24j600_update_phcon1(priv);
netif_notice(priv, drv, dev, "Using parallel detection: %s/%s",
priv->speed == SPEED_100 ? "100" : "10",
priv->full_duplex ? "Full" : "Half");
return -ETIMEDOUT;
}
cpu_relax();
phstat1 = encx24j600_read_phy(priv, PHSTAT1);
}
estat = encx24j600_read_reg(priv, ESTAT);
if (estat & PHYDPX) {
encx24j600_set_bits(priv, MACON2, FULDPX);
encx24j600_write_reg(priv, MABBIPG, 0x15);
} else {
encx24j600_clr_bits(priv, MACON2, FULDPX);
encx24j600_write_reg(priv, MABBIPG, 0x12);
/* Max retransmittions attempt */
encx24j600_write_reg(priv, MACLCON, 0x370f);
}
return ret;
}
/* Access the PHY to determine link status */
static void encx24j600_check_link_status(struct encx24j600_priv *priv)
{
struct net_device *dev = priv->ndev;
u16 estat;
estat = encx24j600_read_reg(priv, ESTAT);
if (estat & PHYLNK) {
if (priv->autoneg == AUTONEG_ENABLE)
encx24j600_wait_for_autoneg(priv);
netif_carrier_on(dev);
netif_info(priv, ifup, dev, "link up\n");
} else {
netif_info(priv, ifdown, dev, "link down\n");
/* Re-enable autoneg since we won't know what we might be
* connected to when the link is brought back up again.
*/
priv->autoneg = AUTONEG_ENABLE;
priv->full_duplex = true;
priv->speed = SPEED_100;
netif_carrier_off(dev);
}
}
static void encx24j600_int_link_handler(struct encx24j600_priv *priv)
{
struct net_device *dev = priv->ndev;
netif_dbg(priv, intr, dev, "%s", __func__);
encx24j600_check_link_status(priv);
encx24j600_clr_bits(priv, EIR, LINKIF);
}
static void encx24j600_tx_complete(struct encx24j600_priv *priv, bool err)
{
struct net_device *dev = priv->ndev;
mutex_lock(&priv->lock);
if (err)
dev->stats.tx_errors++;
else
dev->stats.tx_packets++;
dev->stats.tx_bytes += priv->tx_skb->len;
encx24j600_clr_bits(priv, EIR, TXIF | TXABTIF);
netif_dbg(priv, tx_done, dev, "TX Done%s\n", err ? ": Err" : "");
if (priv->tx_skb) {
dev_kfree_skb(priv->tx_skb);
priv->tx_skb = NULL;
}
netif_wake_queue(dev);
mutex_unlock(&priv->lock);
}
static int encx24j600_receive_packet(struct encx24j600_priv *priv,
struct rsv *rsv)
{
struct net_device *dev = priv->ndev;
struct sk_buff *skb = netdev_alloc_skb(dev, rsv->len + NET_IP_ALIGN);
if (!skb) {
pr_err_ratelimited("RX: OOM: packet dropped\n");
dev->stats.rx_dropped++;
return -ENOMEM;
}
skb_reserve(skb, NET_IP_ALIGN);
encx24j600_raw_read(priv, RRXDATA, skb_put(skb, rsv->len), rsv->len);
if (netif_msg_pktdata(priv))
dump_packet("RX", skb->len, skb->data);
skb->dev = dev;
skb->protocol = eth_type_trans(skb, dev);
skb->ip_summed = CHECKSUM_COMPLETE;
/* Maintain stats */
dev->stats.rx_packets++;
dev->stats.rx_bytes += rsv->len;
priv->next_packet = rsv->next_packet;
netif_rx(skb);
return 0;
}
static void encx24j600_rx_packets(struct encx24j600_priv *priv, u8 packet_count)
{
struct net_device *dev = priv->ndev;
while (packet_count--) {
struct rsv rsv;
u16 newrxtail;
encx24j600_write_reg(priv, ERXRDPT, priv->next_packet);
encx24j600_raw_read(priv, RRXDATA, (u8 *)&rsv, sizeof(rsv));
if (netif_msg_rx_status(priv))
encx24j600_dump_rsv(priv, __func__, &rsv);
if (!RSV_GETBIT(rsv.rxstat, RSV_RXOK) ||
(rsv.len > MAX_FRAMELEN)) {
netif_err(priv, rx_err, dev, "RX Error %04x\n",
rsv.rxstat);
dev->stats.rx_errors++;
if (RSV_GETBIT(rsv.rxstat, RSV_CRCERROR))
dev->stats.rx_crc_errors++;
if (RSV_GETBIT(rsv.rxstat, RSV_LENCHECKERR))
dev->stats.rx_frame_errors++;
if (rsv.len > MAX_FRAMELEN)
dev->stats.rx_over_errors++;
} else {
encx24j600_receive_packet(priv, &rsv);
}
newrxtail = priv->next_packet - 2;
if (newrxtail == ENC_RX_BUF_START)
newrxtail = SRAM_SIZE - 2;
encx24j600_cmd(priv, SETPKTDEC);
encx24j600_write_reg(priv, ERXTAIL, newrxtail);
}
}
static irqreturn_t encx24j600_isr(int irq, void *dev_id)
{
struct encx24j600_priv *priv = dev_id;
struct net_device *dev = priv->ndev;
int eir;
/* Clear interrupts */
encx24j600_cmd(priv, CLREIE);
eir = encx24j600_read_reg(priv, EIR);
if (eir & LINKIF)
encx24j600_int_link_handler(priv);
if (eir & TXIF)
encx24j600_tx_complete(priv, false);
if (eir & TXABTIF)
encx24j600_tx_complete(priv, true);
if (eir & RXABTIF) {
if (eir & PCFULIF) {
/* Packet counter is full */
netif_err(priv, rx_err, dev, "Packet counter full\n");
}
dev->stats.rx_dropped++;
encx24j600_clr_bits(priv, EIR, RXABTIF);
}
if (eir & PKTIF) {
u8 packet_count;
mutex_lock(&priv->lock);
packet_count = encx24j600_read_reg(priv, ESTAT) & 0xff;
while (packet_count) {
encx24j600_rx_packets(priv, packet_count);
packet_count = encx24j600_read_reg(priv, ESTAT) & 0xff;
}
mutex_unlock(&priv->lock);
}
/* Enable interrupts */
encx24j600_cmd(priv, SETEIE);
return IRQ_HANDLED;
}
static int encx24j600_soft_reset(struct encx24j600_priv *priv)
{
int ret = 0;
int timeout;
u16 eudast;
/* Write and verify a test value to EUDAST */
regcache_cache_bypass(priv->ctx.regmap, true);
timeout = 10;
do {
encx24j600_write_reg(priv, EUDAST, EUDAST_TEST_VAL);
eudast = encx24j600_read_reg(priv, EUDAST);
usleep_range(25, 100);
} while ((eudast != EUDAST_TEST_VAL) && --timeout);
regcache_cache_bypass(priv->ctx.regmap, false);
if (timeout == 0) {
ret = -ETIMEDOUT;
goto err_out;
}
/* Wait for CLKRDY to become set */
timeout = 10;
while (!(encx24j600_read_reg(priv, ESTAT) & CLKRDY) && --timeout)
usleep_range(25, 100);
if (timeout == 0) {
ret = -ETIMEDOUT;
goto err_out;
}
/* Issue a System Reset command */
encx24j600_cmd(priv, SETETHRST);
usleep_range(25, 100);
/* Confirm that EUDAST has 0000h after system reset */
if (encx24j600_read_reg(priv, EUDAST) != 0) {
ret = -EINVAL;
goto err_out;
}
/* Wait for PHY register and status bits to become available */
usleep_range(256, 1000);
err_out:
return ret;
}
static int encx24j600_hw_reset(struct encx24j600_priv *priv)
{
int ret;
mutex_lock(&priv->lock);
ret = encx24j600_soft_reset(priv);
mutex_unlock(&priv->lock);
return ret;
}
static void encx24j600_reset_hw_tx(struct encx24j600_priv *priv)
{
encx24j600_set_bits(priv, ECON2, TXRST);
encx24j600_clr_bits(priv, ECON2, TXRST);
}
static void encx24j600_hw_init_tx(struct encx24j600_priv *priv)
{
/* Reset TX */
encx24j600_reset_hw_tx(priv);
/* Clear the TXIF flag if were previously set */
encx24j600_clr_bits(priv, EIR, TXIF | TXABTIF);
/* Write the Tx Buffer pointer */
encx24j600_write_reg(priv, EGPWRPT, ENC_TX_BUF_START);
}
static void encx24j600_hw_init_rx(struct encx24j600_priv *priv)
{
encx24j600_cmd(priv, DISABLERX);
/* Set up RX packet start address in the SRAM */
encx24j600_write_reg(priv, ERXST, ENC_RX_BUF_START);
/* Preload the RX Data pointer to the beginning of the RX area */
encx24j600_write_reg(priv, ERXRDPT, ENC_RX_BUF_START);
priv->next_packet = ENC_RX_BUF_START;
/* Set up RX end address in the SRAM */
encx24j600_write_reg(priv, ERXTAIL, ENC_SRAM_SIZE - 2);
/* Reset the user data pointers */
encx24j600_write_reg(priv, EUDAST, ENC_SRAM_SIZE);
encx24j600_write_reg(priv, EUDAND, ENC_SRAM_SIZE + 1);
/* Set Max Frame length */
encx24j600_write_reg(priv, MAMXFL, MAX_FRAMELEN);
}
static void encx24j600_dump_config(struct encx24j600_priv *priv,
const char *msg)
{
pr_info(DRV_NAME ": %s\n", msg);
/* CHIP configuration */
pr_info(DRV_NAME " ECON1: %04X\n", encx24j600_read_reg(priv, ECON1));
pr_info(DRV_NAME " ECON2: %04X\n", encx24j600_read_reg(priv, ECON2));
pr_info(DRV_NAME " ERXFCON: %04X\n", encx24j600_read_reg(priv,
ERXFCON));
pr_info(DRV_NAME " ESTAT: %04X\n", encx24j600_read_reg(priv, ESTAT));
pr_info(DRV_NAME " EIR: %04X\n", encx24j600_read_reg(priv, EIR));
pr_info(DRV_NAME " EIDLED: %04X\n", encx24j600_read_reg(priv, EIDLED));
/* MAC layer configuration */
pr_info(DRV_NAME " MACON1: %04X\n", encx24j600_read_reg(priv, MACON1));
pr_info(DRV_NAME " MACON2: %04X\n", encx24j600_read_reg(priv, MACON2));
pr_info(DRV_NAME " MAIPG: %04X\n", encx24j600_read_reg(priv, MAIPG));
pr_info(DRV_NAME " MACLCON: %04X\n", encx24j600_read_reg(priv,
MACLCON));
pr_info(DRV_NAME " MABBIPG: %04X\n", encx24j600_read_reg(priv,
MABBIPG));
/* PHY configuation */
pr_info(DRV_NAME " PHCON1: %04X\n", encx24j600_read_phy(priv, PHCON1));
pr_info(DRV_NAME " PHCON2: %04X\n", encx24j600_read_phy(priv, PHCON2));
pr_info(DRV_NAME " PHANA: %04X\n", encx24j600_read_phy(priv, PHANA));
pr_info(DRV_NAME " PHANLPA: %04X\n", encx24j600_read_phy(priv,
PHANLPA));
pr_info(DRV_NAME " PHANE: %04X\n", encx24j600_read_phy(priv, PHANE));
pr_info(DRV_NAME " PHSTAT1: %04X\n", encx24j600_read_phy(priv,
PHSTAT1));
pr_info(DRV_NAME " PHSTAT2: %04X\n", encx24j600_read_phy(priv,
PHSTAT2));
pr_info(DRV_NAME " PHSTAT3: %04X\n", encx24j600_read_phy(priv,
PHSTAT3));
}
static void encx24j600_set_rxfilter_mode(struct encx24j600_priv *priv)
{
switch (priv->rxfilter) {
case RXFILTER_PROMISC:
encx24j600_set_bits(priv, MACON1, PASSALL);
encx24j600_write_reg(priv, ERXFCON, UCEN | MCEN | NOTMEEN);
break;
case RXFILTER_MULTI:
encx24j600_clr_bits(priv, MACON1, PASSALL);
encx24j600_write_reg(priv, ERXFCON, UCEN | CRCEN | BCEN | MCEN);
break;
case RXFILTER_NORMAL:
default:
encx24j600_clr_bits(priv, MACON1, PASSALL);
encx24j600_write_reg(priv, ERXFCON, UCEN | CRCEN | BCEN);
break;
}
}
static int encx24j600_hw_init(struct encx24j600_priv *priv)
{
struct net_device *dev = priv->ndev;
int ret = 0;
u16 eidled;
u16 macon2;
priv->hw_enabled = false;
eidled = encx24j600_read_reg(priv, EIDLED);
if (((eidled & DEVID_MASK) >> DEVID_SHIFT) != ENCX24J600_DEV_ID) {
ret = -EINVAL;
goto err_out;
}
netif_info(priv, drv, dev, "Silicon rev ID: 0x%02x\n",
(eidled & REVID_MASK) >> REVID_SHIFT);
/* PHY Leds: link status,
* LEDA: Link + transmit/receive events
* LEDB: Link State + colision events
*/
encx24j600_update_reg(priv, EIDLED, 0xbc00, 0xbc00);
/* Loopback disabled */
encx24j600_write_reg(priv, MACON1, 0x9);
/* interpacket gap value */
encx24j600_write_reg(priv, MAIPG, 0x0c12);
/* Write the auto negotiation pattern */
encx24j600_write_phy(priv, PHANA, PHANA_DEFAULT);
encx24j600_update_phcon1(priv);
encx24j600_check_link_status(priv);
macon2 = MACON2_RSV1 | TXCRCEN | PADCFG0 | PADCFG2 | MACON2_DEFER;
if ((priv->autoneg == AUTONEG_DISABLE) && priv->full_duplex)
macon2 |= FULDPX;
encx24j600_set_bits(priv, MACON2, macon2);
priv->rxfilter = RXFILTER_NORMAL;
encx24j600_set_rxfilter_mode(priv);
/* Program the Maximum frame length */
encx24j600_write_reg(priv, MAMXFL, MAX_FRAMELEN);
/* Init Tx pointers */
encx24j600_hw_init_tx(priv);
/* Init Rx pointers */
encx24j600_hw_init_rx(priv);
if (netif_msg_hw(priv))
encx24j600_dump_config(priv, "Hw is initialized");
err_out:
return ret;
}
static void encx24j600_hw_enable(struct encx24j600_priv *priv)
{
/* Clear the interrupt flags in case was set */
encx24j600_clr_bits(priv, EIR, (PCFULIF | RXABTIF | TXABTIF | TXIF |
PKTIF | LINKIF));
/* Enable the interrupts */
encx24j600_write_reg(priv, EIE, (PCFULIE | RXABTIE | TXABTIE | TXIE |
PKTIE | LINKIE | INTIE));
/* Enable RX */
encx24j600_cmd(priv, ENABLERX);
priv->hw_enabled = true;
}
static void encx24j600_hw_disable(struct encx24j600_priv *priv)
{
/* Disable all interrupts */
encx24j600_write_reg(priv, EIE, 0);
/* Disable RX */
encx24j600_cmd(priv, DISABLERX);
priv->hw_enabled = false;
}
static int encx24j600_setlink(struct net_device *dev, u8 autoneg, u16 speed,
u8 duplex)
{
struct encx24j600_priv *priv = netdev_priv(dev);
int ret = 0;
if (!priv->hw_enabled) {
/* link is in low power mode now; duplex setting
* will take effect on next encx24j600_hw_init()
*/
if (speed == SPEED_10 || speed == SPEED_100) {
priv->autoneg = (autoneg == AUTONEG_ENABLE);
priv->full_duplex = (duplex == DUPLEX_FULL);
priv->speed = (speed == SPEED_100);
} else {
netif_warn(priv, link, dev, "unsupported link speed setting\n");
/*speeds other than SPEED_10 and SPEED_100 */
/*are not supported by chip */
ret = -EOPNOTSUPP;
}
} else {
netif_warn(priv, link, dev, "Warning: hw must be disabled to set link mode\n");
ret = -EBUSY;
}
return ret;
}
static void encx24j600_hw_get_macaddr(struct encx24j600_priv *priv,
unsigned char *ethaddr)
{
unsigned short val;
val = encx24j600_read_reg(priv, MAADR1);
ethaddr[0] = val & 0x00ff;
ethaddr[1] = (val & 0xff00) >> 8;
val = encx24j600_read_reg(priv, MAADR2);
ethaddr[2] = val & 0x00ffU;
ethaddr[3] = (val & 0xff00U) >> 8;
val = encx24j600_read_reg(priv, MAADR3);
ethaddr[4] = val & 0x00ffU;
ethaddr[5] = (val & 0xff00U) >> 8;
}
/* Program the hardware MAC address from dev->dev_addr.*/
static int encx24j600_set_hw_macaddr(struct net_device *dev)
{
struct encx24j600_priv *priv = netdev_priv(dev);
if (priv->hw_enabled) {
netif_info(priv, drv, dev, "Hardware must be disabled to set Mac address\n");
return -EBUSY;
}
mutex_lock(&priv->lock);
netif_info(priv, drv, dev, "%s: Setting MAC address to %pM\n",
dev->name, dev->dev_addr);
encx24j600_write_reg(priv, MAADR3, (dev->dev_addr[4] |
dev->dev_addr[5] << 8));
encx24j600_write_reg(priv, MAADR2, (dev->dev_addr[2] |
dev->dev_addr[3] << 8));
encx24j600_write_reg(priv, MAADR1, (dev->dev_addr[0] |
dev->dev_addr[1] << 8));
mutex_unlock(&priv->lock);
return 0;
}
/* Store the new hardware address in dev->dev_addr, and update the MAC.*/
static int encx24j600_set_mac_address(struct net_device *dev, void *addr)
{
struct sockaddr *address = addr;
if (netif_running(dev))
return -EBUSY;
if (!is_valid_ether_addr(address->sa_data))
return -EADDRNOTAVAIL;
memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
return encx24j600_set_hw_macaddr(dev);
}
static int encx24j600_open(struct net_device *dev)
{
struct encx24j600_priv *priv = netdev_priv(dev);
int ret = request_threaded_irq(priv->ctx.spi->irq, NULL, encx24j600_isr,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
DRV_NAME, priv);
if (unlikely(ret < 0)) {
netdev_err(dev, "request irq %d failed (ret = %d)\n",
priv->ctx.spi->irq, ret);
return ret;
}
encx24j600_hw_disable(priv);
encx24j600_hw_init(priv);
encx24j600_hw_enable(priv);
netif_start_queue(dev);
return 0;
}
static int encx24j600_stop(struct net_device *dev)
{
struct encx24j600_priv *priv = netdev_priv(dev);
netif_stop_queue(dev);
free_irq(priv->ctx.spi->irq, priv);
return 0;
}
static void encx24j600_setrx_proc(struct kthread_work *ws)
{
struct encx24j600_priv *priv =
container_of(ws, struct encx24j600_priv, setrx_work);
mutex_lock(&priv->lock);
encx24j600_set_rxfilter_mode(priv);
mutex_unlock(&priv->lock);
}
static void encx24j600_set_multicast_list(struct net_device *dev)
{
struct encx24j600_priv *priv = netdev_priv(dev);
int oldfilter = priv->rxfilter;
if (dev->flags & IFF_PROMISC) {
netif_dbg(priv, link, dev, "promiscuous mode\n");
priv->rxfilter = RXFILTER_PROMISC;
} else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) {
netif_dbg(priv, link, dev, "%smulticast mode\n",
(dev->flags & IFF_ALLMULTI) ? "all-" : "");
priv->rxfilter = RXFILTER_MULTI;
} else {
netif_dbg(priv, link, dev, "normal mode\n");
priv->rxfilter = RXFILTER_NORMAL;
}
if (oldfilter != priv->rxfilter)
queue_kthread_work(&priv->kworker, &priv->setrx_work);
}
static void encx24j600_hw_tx(struct encx24j600_priv *priv)
{
struct net_device *dev = priv->ndev;
netif_info(priv, tx_queued, dev, "TX Packet Len:%d\n",
priv->tx_skb->len);
if (netif_msg_pktdata(priv))
dump_packet("TX", priv->tx_skb->len, priv->tx_skb->data);
if (encx24j600_read_reg(priv, EIR) & TXABTIF)
/* Last transmition aborted due to error. Reset TX interface */
encx24j600_reset_hw_tx(priv);
/* Clear the TXIF flag if were previously set */
encx24j600_clr_bits(priv, EIR, TXIF);
/* Set the data pointer to the TX buffer address in the SRAM */
encx24j600_write_reg(priv, EGPWRPT, ENC_TX_BUF_START);
/* Copy the packet into the SRAM */
encx24j600_raw_write(priv, WGPDATA, (u8 *)priv->tx_skb->data,
priv->tx_skb->len);
/* Program the Tx buffer start pointer */
encx24j600_write_reg(priv, ETXST, ENC_TX_BUF_START);
/* Program the packet length */
encx24j600_write_reg(priv, ETXLEN, priv->tx_skb->len);
/* Start the transmission */
encx24j600_cmd(priv, SETTXRTS);
}
static void encx24j600_tx_proc(struct kthread_work *ws)
{
struct encx24j600_priv *priv =
container_of(ws, struct encx24j600_priv, tx_work);
mutex_lock(&priv->lock);
encx24j600_hw_tx(priv);
mutex_unlock(&priv->lock);
}
static netdev_tx_t encx24j600_tx(struct sk_buff *skb, struct net_device *dev)
{
struct encx24j600_priv *priv = netdev_priv(dev);
netif_stop_queue(dev);
/* save the timestamp */
dev->trans_start = jiffies;
/* Remember the skb for deferred processing */
priv->tx_skb = skb;
queue_kthread_work(&priv->kworker, &priv->tx_work);
return NETDEV_TX_OK;
}
/* Deal with a transmit timeout */
static void encx24j600_tx_timeout(struct net_device *dev)
{
struct encx24j600_priv *priv = netdev_priv(dev);
netif_err(priv, tx_err, dev, "TX timeout at %ld, latency %ld\n",
jiffies, jiffies - dev->trans_start);
dev->stats.tx_errors++;
netif_wake_queue(dev);
return;
}
static int encx24j600_get_regs_len(struct net_device *dev)
{
return SFR_REG_COUNT;
}
static void encx24j600_get_regs(struct net_device *dev,
struct ethtool_regs *regs, void *p)
{
struct encx24j600_priv *priv = netdev_priv(dev);
u16 *buff = p;
u8 reg;
regs->version = 1;
mutex_lock(&priv->lock);
for (reg = 0; reg < SFR_REG_COUNT; reg += 2) {
unsigned int val = 0;
/* ignore errors for unreadable registers */
regmap_read(priv->ctx.regmap, reg, &val);
buff[reg] = val & 0xffff;
}
mutex_unlock(&priv->lock);
}
static void encx24j600_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
strlcpy(info->version, DRV_VERSION, sizeof(info->version));
strlcpy(info->bus_info, dev_name(dev->dev.parent),
sizeof(info->bus_info));
}
static int encx24j600_get_settings(struct net_device *dev,
struct ethtool_cmd *cmd)
{
struct encx24j600_priv *priv = netdev_priv(dev);
cmd->transceiver = XCVR_INTERNAL;
cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
SUPPORTED_Autoneg | SUPPORTED_TP;
ethtool_cmd_speed_set(cmd, priv->speed);
cmd->duplex = priv->full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
cmd->port = PORT_TP;
cmd->autoneg = priv->autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
return 0;
}
static int encx24j600_set_settings(struct net_device *dev,
struct ethtool_cmd *cmd)
{
return encx24j600_setlink(dev, cmd->autoneg,
ethtool_cmd_speed(cmd), cmd->duplex);
}
static u32 encx24j600_get_msglevel(struct net_device *dev)
{
struct encx24j600_priv *priv = netdev_priv(dev);
return priv->msg_enable;
}
static void encx24j600_set_msglevel(struct net_device *dev, u32 val)
{
struct encx24j600_priv *priv = netdev_priv(dev);
priv->msg_enable = val;
}
static const struct ethtool_ops encx24j600_ethtool_ops = {
.get_settings = encx24j600_get_settings,
.set_settings = encx24j600_set_settings,
.get_drvinfo = encx24j600_get_drvinfo,
.get_msglevel = encx24j600_get_msglevel,
.set_msglevel = encx24j600_set_msglevel,
.get_regs_len = encx24j600_get_regs_len,
.get_regs = encx24j600_get_regs,
};
static const struct net_device_ops encx24j600_netdev_ops = {
.ndo_open = encx24j600_open,
.ndo_stop = encx24j600_stop,
.ndo_start_xmit = encx24j600_tx,
.ndo_set_rx_mode = encx24j600_set_multicast_list,
.ndo_set_mac_address = encx24j600_set_mac_address,
.ndo_tx_timeout = encx24j600_tx_timeout,
.ndo_validate_addr = eth_validate_addr,
};
static int encx24j600_spi_probe(struct spi_device *spi)
{
int ret;
struct net_device *ndev;
struct encx24j600_priv *priv;
ndev = alloc_etherdev(sizeof(struct encx24j600_priv));
if (!ndev) {
ret = -ENOMEM;
goto error_out;
}
priv = netdev_priv(ndev);
spi_set_drvdata(spi, priv);
dev_set_drvdata(&spi->dev, priv);
SET_NETDEV_DEV(ndev, &spi->dev);
priv->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
priv->ndev = ndev;
/* Default configuration PHY configuration */
priv->full_duplex = true;
priv->autoneg = AUTONEG_ENABLE;
priv->speed = SPEED_100;
priv->ctx.spi = spi;
devm_regmap_init_encx24j600(&spi->dev, &priv->ctx);
ndev->irq = spi->irq;
ndev->netdev_ops = &encx24j600_netdev_ops;
mutex_init(&priv->lock);
/* Reset device and check if it is connected */
if (encx24j600_hw_reset(priv)) {
netif_err(priv, probe, ndev,
DRV_NAME ": Chip is not detected\n");
ret = -EIO;
goto out_free;
}
/* Initialize the device HW to the consistent state */
if (encx24j600_hw_init(priv)) {
netif_err(priv, probe, ndev,
DRV_NAME ": HW initialization error\n");
ret = -EIO;
goto out_free;
}
init_kthread_worker(&priv->kworker);
init_kthread_work(&priv->tx_work, encx24j600_tx_proc);
init_kthread_work(&priv->setrx_work, encx24j600_setrx_proc);
priv->kworker_task = kthread_run(kthread_worker_fn, &priv->kworker,
"encx24j600");
if (IS_ERR(priv->kworker_task)) {
ret = PTR_ERR(priv->kworker_task);
goto out_free;
}
/* Get the MAC address from the chip */
encx24j600_hw_get_macaddr(priv, ndev->dev_addr);
ndev->ethtool_ops = &encx24j600_ethtool_ops;
ret = register_netdev(ndev);
if (unlikely(ret)) {
netif_err(priv, probe, ndev, "Error %d initializing card encx24j600 card\n",
ret);
goto out_free;
}
netif_info(priv, drv, priv->ndev, "MAC address %pM\n", ndev->dev_addr);
return ret;
out_free:
free_netdev(ndev);
error_out:
return ret;
}
static int encx24j600_spi_remove(struct spi_device *spi)
{
struct encx24j600_priv *priv = dev_get_drvdata(&spi->dev);
unregister_netdev(priv->ndev);
free_netdev(priv->ndev);
return 0;
}
static const struct spi_device_id encx24j600_spi_id_table = {
.name = "encx24j600"
};
static struct spi_driver encx24j600_spi_net_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
.bus = &spi_bus_type,
},
.probe = encx24j600_spi_probe,
.remove = encx24j600_spi_remove,
.id_table = &encx24j600_spi_id_table,
};
static int __init encx24j600_init(void)
{
return spi_register_driver(&encx24j600_spi_net_driver);
}
module_init(encx24j600_init);
void encx24j600_exit(void)
{
spi_unregister_driver(&encx24j600_spi_net_driver);
}
module_exit(encx24j600_exit);
MODULE_DESCRIPTION(DRV_NAME " ethernet driver");
MODULE_AUTHOR("Jon Ringle <jringle@gridpoint.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("spi:" DRV_NAME);
drivers/net/ethernet/microchip/encx24j600_hw.h deleted 100644 → 0
View file @ c664bc6d
/**
* encx24j600_hw.h: Register definitions
*
*/
#ifndef _ENCX24J600_HW_H
#define _ENCX24J600_HW_H
struct encx24j600_context {
struct spi_device *spi;
struct regmap *regmap;
struct regmap *phymap;
struct mutex mutex; /* mutex to protect access to regmap */
int bank;
};
void devm_regmap_init_encx24j600(struct device *dev,
struct encx24j600_context *ctx);
/* Single-byte instructions */
#define BANK_SELECT(bank) (0xC0 | ((bank & (BANK_MASK >> BANK_SHIFT)) << 1))
#define B0SEL 0xC0 /* Bank 0 Select */
#define B1SEL 0xC2 /* Bank 1 Select */
#define B2SEL 0xC4 /* Bank 2 Select */
#define B3SEL 0xC6 /* Bank 3 Select */
#define SETETHRST 0xCA /* System Reset */
#define FCDISABLE 0xE0 /* Flow Control Disable */
#define FCSINGLE 0xE2 /* Flow Control Single */
#define FCMULTIPLE 0xE4 /* Flow Control Multiple */
#define FCCLEAR 0xE6 /* Flow Control Clear */
#define SETPKTDEC 0xCC /* Decrement Packet Counter */
#define DMASTOP 0xD2 /* DMA Stop */
#define DMACKSUM 0xD8 /* DMA Start Checksum */
#define DMACKSUMS 0xDA /* DMA Start Checksum with Seed */
#define DMACOPY 0xDC /* DMA Start Copy */
#define DMACOPYS 0xDE /* DMA Start Copy and Checksum with Seed */
#define SETTXRTS 0xD4 /* Request Packet Transmission */
#define ENABLERX 0xE8 /* Enable RX */
#define DISABLERX 0xEA /* Disable RX */
#define SETEIE 0xEC /* Enable Interrupts */
#define CLREIE 0xEE /* Disable Interrupts */
/* Two byte instructions */
#define RBSEL 0xC8 /* Read Bank Select */
/* Three byte instructions */
#define WGPRDPT 0x60 /* Write EGPRDPT */
#define RGPRDPT 0x62 /* Read EGPRDPT */
#define WRXRDPT 0x64 /* Write ERXRDPT */
#define RRXRDPT 0x66 /* Read ERXRDPT */
#define WUDARDPT 0x68 /* Write EUDARDPT */
#define RUDARDPT 0x6A /* Read EUDARDPT */
#define WGPWRPT 0x6C /* Write EGPWRPT */
#define RGPWRPT 0x6E /* Read EGPWRPT */
#define WRXWRPT 0x70 /* Write ERXWRPT */
#define RRXWRPT 0x72 /* Read ERXWRPT */
#define WUDAWRPT 0x74 /* Write EUDAWRPT */
#define RUDAWRPT 0x76 /* Read EUDAWRPT */
/* n byte instructions */
#define RCRCODE 0x00
#define WCRCODE 0x40
#define BFSCODE 0x80
#define BFCCODE 0xA0
#define RCR(addr) (RCRCODE | (addr & ADDR_MASK)) /* Read Control Register */
#define WCR(addr) (WCRCODE | (addr & ADDR_MASK)) /* Write Control Register */
#define RCRU 0x20 /* Read Control Register Unbanked */
#define WCRU 0x22 /* Write Control Register Unbanked */
#define BFS(addr) (BFSCODE | (addr & ADDR_MASK)) /* Bit Field Set */
#define BFC(addr) (BFCCODE | (addr & ADDR_MASK)) /* Bit Field Clear */
#define BFSU 0x24 /* Bit Field Set Unbanked */
#define BFCU 0x26 /* Bit Field Clear Unbanked */
#define RGPDATA 0x28 /* Read EGPDATA */
#define WGPDATA 0x2A /* Write EGPDATA */
#define RRXDATA 0x2C /* Read ERXDATA */
#define WRXDATA 0x2E /* Write ERXDATA */
#define RUDADATA 0x30 /* Read EUDADATA */
#define WUDADATA 0x32 /* Write EUDADATA */
#define SFR_REG_COUNT 0xA0
/* ENC424J600 Control Registers
* Control register definitions are a combination of address
* and bank number
* - Register address (bits 0-4)
* - Bank number (bits 5-6)
*/
#define ADDR_MASK 0x1F
#define BANK_MASK 0x60
#define BANK_SHIFT 5
/* All-bank registers */
#define EUDAST 0x16
#define EUDAND 0x18
#define ESTAT 0x1A
#define EIR 0x1C
#define ECON1 0x1E
/* Bank 0 registers */
#define ETXST (0x00 | 0x00)
#define ETXLEN (0x02 | 0x00)
#define ERXST (0x04 | 0x00)
#define ERXTAIL (0x06 | 0x00)
#define ERXHEAD (0x08 | 0x00)
#define EDMAST (0x0A | 0x00)
#define EDMALEN (0x0C | 0x00)
#define EDMADST (0x0E | 0x00)
#define EDMACS (0x10 | 0x00)
#define ETXSTAT (0x12 | 0x00)
#define ETXWIRE (0x14 | 0x00)
/* Bank 1 registers */
#define EHT1 (0x00 | 0x20)
#define EHT2 (0x02 | 0x20)
#define EHT3 (0x04 | 0x20)
#define EHT4 (0x06 | 0x20)
#define EPMM1 (0x08 | 0x20)
#define EPMM2 (0x0A | 0x20)
#define EPMM3 (0x0C | 0x20)
#define EPMM4 (0x0E | 0x20)
#define EPMCS (0x10 | 0x20)
#define EPMO (0x12 | 0x20)
#define ERXFCON (0x14 | 0x20)
/* Bank 2 registers */
#define MACON1 (0x00 | 0x40)
#define MACON2 (0x02 | 0x40)
#define MABBIPG (0x04 | 0x40)
#define MAIPG (0x06 | 0x40)
#define MACLCON (0x08 | 0x40)
#define MAMXFL (0x0A | 0x40)
#define MICMD (0x12 | 0x40)
#define MIREGADR (0x14 | 0x40)
/* Bank 3 registers */
#define MAADR3 (0x00 | 0x60)
#define MAADR2 (0x02 | 0x60)
#define MAADR1 (0x04 | 0x60)
#define MIWR (0x06 | 0x60)
#define MIRD (0x08 | 0x60)
#define MISTAT (0x0A | 0x60)
#define EPAUS (0x0C | 0x60)
#define ECON2 (0x0E | 0x60)
#define ERXWM (0x10 | 0x60)
#define EIE (0x12 | 0x60)
#define EIDLED (0x14 | 0x60)
/* Unbanked registers */
#define EGPDATA (0x00 | 0x80)
#define ERXDATA (0x02 | 0x80)
#define EUDADATA (0x04 | 0x80)
#define EGPRDPT (0x06 | 0x80)
#define EGPWRPT (0x08 | 0x80)
#define ERXRDPT (0x0A | 0x80)
#define ERXWRPT (0x0C | 0x80)
#define EUDARDPT (0x0E | 0x80)
#define EUDAWRPT (0x10 | 0x80)
/* Register bit definitions */
/* ESTAT */
#define INT (1 << 15)
#define FCIDLE (1 << 14)
#define RXBUSY (1 << 13)
#define CLKRDY (1 << 12)
#define PHYDPX (1 << 10)
#define PHYLNK (1 << 8)
/* EIR */
#define CRYPTEN (1 << 15)
#define MODEXIF (1 << 14)
#define HASHIF (1 << 13)
#define AESIF (1 << 12)
#define LINKIF (1 << 11)
#define PKTIF (1 << 6)
#define DMAIF (1 << 5)
#define TXIF (1 << 3)
#define TXABTIF (1 << 2)
#define RXABTIF (1 << 1)
#define PCFULIF (1 << 0)
/* ECON1 */
#define MODEXST (1 << 15)
#define HASHEN (1 << 14)
#define HASHOP (1 << 13)
#define HASHLST (1 << 12)
#define AESST (1 << 11)
#define AESOP1 (1 << 10)
#define AESOP0 (1 << 9)
#define PKTDEC (1 << 8)
#define FCOP1 (1 << 7)
#define FCOP0 (1 << 6)
#define DMAST (1 << 5)
#define DMACPY (1 << 4)
#define DMACSSD (1 << 3)
#define DMANOCS (1 << 2)
#define TXRTS (1 << 1)
#define RXEN (1 << 0)
/* ETXSTAT */
#define LATECOL (1 << 10)
#define MAXCOL (1 << 9)
#define EXDEFER (1 << 8)
#define ETXSTATL_DEFER (1 << 7)
#define CRCBAD (1 << 4)
#define COLCNT_MASK 0xF
/* ERXFCON */
#define HTEN (1 << 15)
#define MPEN (1 << 14)
#define NOTPM (1 << 12)
#define PMEN3 (1 << 11)
#define PMEN2 (1 << 10)
#define PMEN1 (1 << 9)
#define PMEN0 (1 << 8)
#define CRCEEN (1 << 7)
#define CRCEN (1 << 6)
#define RUNTEEN (1 << 5)
#define RUNTEN (1 << 4)
#define UCEN (1 << 3)
#define NOTMEEN (1 << 2)
#define MCEN (1 << 1)
#define BCEN (1 << 0)
/* MACON1 */
#define LOOPBK (1 << 4)
#define RXPAUS (1 << 2)
#define PASSALL (1 << 1)
/* MACON2 */
#define MACON2_DEFER (1 << 14)
#define BPEN (1 << 13)
#define NOBKOFF (1 << 12)
#define PADCFG2 (1 << 7)
#define PADCFG1 (1 << 6)
#define PADCFG0 (1 << 5)
#define TXCRCEN (1 << 4)
#define PHDREN (1 << 3)
#define HFRMEN (1 << 2)
#define MACON2_RSV1 (1 << 1)
#define FULDPX (1 << 0)
/* MAIPG */
/* value of the high byte is given by the reserved bits,
* value of the low byte is recomended setting of the
* IPG parameter.
*/
#define MAIPGH_VAL 0x0C
#define MAIPGL_VAL 0x12
/* MIREGADRH */
#define MIREGADR_VAL (1 << 8)
/* MIREGADRL */
#define PHREG_MASK 0x1F
/* MICMD */
#define MIISCAN (1 << 1)
#define MIIRD (1 << 0)
/* MISTAT */
#define NVALID (1 << 2)
#define SCAN (1 << 1)
#define BUSY (1 << 0)
/* ECON2 */
#define ETHEN (1 << 15)
#define STRCH (1 << 14)
#define TXMAC (1 << 13)
#define SHA1MD5 (1 << 12)
#define COCON3 (1 << 11)
#define COCON2 (1 << 10)
#define COCON1 (1 << 9)
#define COCON0 (1 << 8)
#define AUTOFC (1 << 7)
#define TXRST (1 << 6)
#define RXRST (1 << 5)
#define ETHRST (1 << 4)
#define MODLEN1 (1 << 3)
#define MODLEN0 (1 << 2)
#define AESLEN1 (1 << 1)
#define AESLEN0 (1 << 0)
/* EIE */
#define INTIE (1 << 15)
#define MODEXIE (1 << 14)
#define HASHIE (1 << 13)
#define AESIE (1 << 12)
#define LINKIE (1 << 11)
#define PKTIE (1 << 6)
#define DMAIE (1 << 5)
#define TXIE (1 << 3)
#define TXABTIE (1 << 2)
#define RXABTIE (1 << 1)
#define PCFULIE (1 << 0)
/* EIDLED */
#define LACFG3 (1 << 15)
#define LACFG2 (1 << 14)
#define LACFG1 (1 << 13)
#define LACFG0 (1 << 12)
#define LBCFG3 (1 << 11)
#define LBCFG2 (1 << 10)
#define LBCFG1 (1 << 9)
#define LBCFG0 (1 << 8)
#define DEVID_SHIFT 5
#define DEVID_MASK (0x7 << DEVID_SHIFT)
#define REVID_SHIFT 0
#define REVID_MASK (0x1F << REVID_SHIFT)
/* PHY registers */
#define PHCON1 0x00
#define PHSTAT1 0x01
#define PHANA 0x04
#define PHANLPA 0x05
#define PHANE 0x06
#define PHCON2 0x11
#define PHSTAT2 0x1B
#define PHSTAT3 0x1F
/* PHCON1 */
#define PRST (1 << 15)
#define PLOOPBK (1 << 14)
#define SPD100 (1 << 13)
#define ANEN (1 << 12)
#define PSLEEP (1 << 11)
#define RENEG (1 << 9)
#define PFULDPX (1 << 8)
/* PHSTAT1 */
#define FULL100 (1 << 14)
#define HALF100 (1 << 13)
#define FULL10 (1 << 12)
#define HALF10 (1 << 11)
#define ANDONE (1 << 5)
#define LRFAULT (1 << 4)
#define ANABLE (1 << 3)
#define LLSTAT (1 << 2)
#define EXTREGS (1 << 0)
/* PHSTAT2 */
#define PLRITY (1 << 4)
/* PHSTAT3 */
#define PHY3SPD100 (1 << 3)
#define PHY3DPX (1 << 4)
#define SPDDPX_SHIFT 2
#define SPDDPX_MASK (0x7 << SPDDPX_SHIFT)
/* PHANA */
/* Default value for PHY initialization*/
#define PHANA_DEFAULT 0x05E1
/* PHANE */
#define PDFLT (1 << 4)
#define LPARCD (1 << 1)
#define LPANABL (1 << 0)
#define EUDAST_TEST_VAL 0x1234
#define TSV_SIZE 7
#define ENCX24J600_DEV_ID 0x1
/* Configuration */
/* Led is on when the link is present and driven low
* temporarily when packet is TX'd or RX'd
*/
#define LED_A_SETTINGS 0xC
/* Led is on if the link is in 100 Mbps mode */
#define LED_B_SETTINGS 0x8
/* maximum ethernet frame length
* Currently not used as a limit anywhere
* (we're using the "huge frame enable" feature of
* enc424j600).
*/
#define MAX_FRAMELEN 1518
/* Size in bytes of the receive buffer in enc424j600.
* Must be word aligned (even).
*/
#define RX_BUFFER_SIZE (15 * MAX_FRAMELEN)
/* Start of the general purpose area in sram */
#define SRAM_GP_START 0x0
/* SRAM size */
#define SRAM_SIZE 0x6000
/* Start of the receive buffer */
#define ERXST_VAL (SRAM_SIZE - RX_BUFFER_SIZE)
#define RSV_RXLONGEVDROPEV 16
#define RSV_CARRIEREV 18
#define RSV_CRCERROR 20
#define RSV_LENCHECKERR 21
#define RSV_LENOUTOFRANGE 22
#define RSV_RXOK 23
#define RSV_RXMULTICAST 24
#define RSV_RXBROADCAST 25
#define RSV_DRIBBLENIBBLE 26
#define RSV_RXCONTROLFRAME 27
#define RSV_RXPAUSEFRAME 28
#define RSV_RXUNKNOWNOPCODE 29
#define RSV_RXTYPEVLAN 30
#define RSV_RUNTFILTERMATCH 31
#define RSV_NOTMEFILTERMATCH 32
#define RSV_HASHFILTERMATCH 33
#define RSV_MAGICPKTFILTERMATCH 34
#define RSV_PTRNMTCHFILTERMATCH 35
#define RSV_UNICASTFILTERMATCH 36
#define RSV_SIZE 8
#define RSV_BITMASK(x) (1 << ((x) - 16))
#define RSV_GETBIT(x, y) (((x) & RSV_BITMASK(y)) ? 1 : 0)
struct rsv {
u16 next_packet;
u16 len;
u32 rxstat;
};
/* Put RX buffer at 0 as suggested by the Errata datasheet */
#define RXSTART_INIT ERXST_VAL
#define RXEND_INIT 0x5FFF
int regmap_encx24j600_spi_write(void *context, u8 reg, const u8 *data,
size_t count);
int regmap_encx24j600_spi_read(void *context, u8 reg, u8 *data, size_t count);
#endif
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