Commit 722fdb33 authored by Philip Craig's avatar Philip Craig Committed by Jeff Garzik
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[PATCH] 8139cp: add ethtool eeprom support



Implement the ethtool eeprom operations for the 8139cp driver.
Tested on x86 and big-endian ARM.
Signed-off-by: default avatarPhilip Craig <philipc@snapgear.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent d73f1e3c
......@@ -401,6 +401,11 @@ static void cp_clean_rings (struct cp_private *cp);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void cp_poll_controller(struct net_device *dev);
#endif
static int cp_get_eeprom_len(struct net_device *dev);
static int cp_get_eeprom(struct net_device *dev,
struct ethtool_eeprom *eeprom, u8 *data);
static int cp_set_eeprom(struct net_device *dev,
struct ethtool_eeprom *eeprom, u8 *data);
static struct pci_device_id cp_pci_tbl[] = {
{ PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139,
......@@ -1577,6 +1582,9 @@ static struct ethtool_ops cp_ethtool_ops = {
.get_strings = cp_get_strings,
.get_ethtool_stats = cp_get_ethtool_stats,
.get_perm_addr = ethtool_op_get_perm_addr,
.get_eeprom_len = cp_get_eeprom_len,
.get_eeprom = cp_get_eeprom,
.set_eeprom = cp_set_eeprom,
};
static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
......@@ -1612,24 +1620,32 @@ static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
#define eeprom_delay() readl(ee_addr)
/* The EEPROM commands include the alway-set leading bit. */
#define EE_EXTEND_CMD (4)
#define EE_WRITE_CMD (5)
#define EE_READ_CMD (6)
#define EE_ERASE_CMD (7)
static int read_eeprom (void __iomem *ioaddr, int location, int addr_len)
{
int i;
unsigned retval = 0;
void __iomem *ee_addr = ioaddr + Cfg9346;
int read_cmd = location | (EE_READ_CMD << addr_len);
#define EE_EWDS_ADDR (0)
#define EE_WRAL_ADDR (1)
#define EE_ERAL_ADDR (2)
#define EE_EWEN_ADDR (3)
#define CP_EEPROM_MAGIC PCI_DEVICE_ID_REALTEK_8139
static void eeprom_cmd_start(void __iomem *ee_addr)
{
writeb (EE_ENB & ~EE_CS, ee_addr);
writeb (EE_ENB, ee_addr);
eeprom_delay ();
}
/* Shift the read command bits out. */
for (i = 3 + addr_len - 1; i >= 0; i--) {
int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
static void eeprom_cmd(void __iomem *ee_addr, int cmd, int cmd_len)
{
int i;
/* Shift the command bits out. */
for (i = cmd_len - 1; i >= 0; i--) {
int dataval = (cmd & (1 << i)) ? EE_DATA_WRITE : 0;
writeb (EE_ENB | dataval, ee_addr);
eeprom_delay ();
writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
......@@ -1637,6 +1653,33 @@ static int read_eeprom (void __iomem *ioaddr, int location, int addr_len)
}
writeb (EE_ENB, ee_addr);
eeprom_delay ();
}
static void eeprom_cmd_end(void __iomem *ee_addr)
{
writeb (~EE_CS, ee_addr);
eeprom_delay ();
}
static void eeprom_extend_cmd(void __iomem *ee_addr, int extend_cmd,
int addr_len)
{
int cmd = (EE_EXTEND_CMD << addr_len) | (extend_cmd << (addr_len - 2));
eeprom_cmd_start(ee_addr);
eeprom_cmd(ee_addr, cmd, 3 + addr_len);
eeprom_cmd_end(ee_addr);
}
static u16 read_eeprom (void __iomem *ioaddr, int location, int addr_len)
{
int i;
u16 retval = 0;
void __iomem *ee_addr = ioaddr + Cfg9346;
int read_cmd = location | (EE_READ_CMD << addr_len);
eeprom_cmd_start(ee_addr);
eeprom_cmd(ee_addr, read_cmd, 3 + addr_len);
for (i = 16; i > 0; i--) {
writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
......@@ -1648,13 +1691,125 @@ static int read_eeprom (void __iomem *ioaddr, int location, int addr_len)
eeprom_delay ();
}
/* Terminate the EEPROM access. */
writeb (~EE_CS, ee_addr);
eeprom_delay ();
eeprom_cmd_end(ee_addr);
return retval;
}
static void write_eeprom(void __iomem *ioaddr, int location, u16 val,
int addr_len)
{
int i;
void __iomem *ee_addr = ioaddr + Cfg9346;
int write_cmd = location | (EE_WRITE_CMD << addr_len);
eeprom_extend_cmd(ee_addr, EE_EWEN_ADDR, addr_len);
eeprom_cmd_start(ee_addr);
eeprom_cmd(ee_addr, write_cmd, 3 + addr_len);
eeprom_cmd(ee_addr, val, 16);
eeprom_cmd_end(ee_addr);
eeprom_cmd_start(ee_addr);
for (i = 0; i < 20000; i++)
if (readb(ee_addr) & EE_DATA_READ)
break;
eeprom_cmd_end(ee_addr);
eeprom_extend_cmd(ee_addr, EE_EWDS_ADDR, addr_len);
}
static int cp_get_eeprom_len(struct net_device *dev)
{
struct cp_private *cp = netdev_priv(dev);
int size;
spin_lock_irq(&cp->lock);
size = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 256 : 128;
spin_unlock_irq(&cp->lock);
return size;
}
static int cp_get_eeprom(struct net_device *dev,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct cp_private *cp = netdev_priv(dev);
unsigned int addr_len;
u16 val;
u32 offset = eeprom->offset >> 1;
u32 len = eeprom->len;
u32 i = 0;
eeprom->magic = CP_EEPROM_MAGIC;
spin_lock_irq(&cp->lock);
addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
if (eeprom->offset & 1) {
val = read_eeprom(cp->regs, offset, addr_len);
data[i++] = (u8)(val >> 8);
offset++;
}
while (i < len - 1) {
val = read_eeprom(cp->regs, offset, addr_len);
data[i++] = (u8)val;
data[i++] = (u8)(val >> 8);
offset++;
}
if (i < len) {
val = read_eeprom(cp->regs, offset, addr_len);
data[i] = (u8)val;
}
spin_unlock_irq(&cp->lock);
return 0;
}
static int cp_set_eeprom(struct net_device *dev,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct cp_private *cp = netdev_priv(dev);
unsigned int addr_len;
u16 val;
u32 offset = eeprom->offset >> 1;
u32 len = eeprom->len;
u32 i = 0;
if (eeprom->magic != CP_EEPROM_MAGIC)
return -EINVAL;
spin_lock_irq(&cp->lock);
addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
if (eeprom->offset & 1) {
val = read_eeprom(cp->regs, offset, addr_len) & 0xff;
val |= (u16)data[i++] << 8;
write_eeprom(cp->regs, offset, val, addr_len);
offset++;
}
while (i < len - 1) {
val = (u16)data[i++];
val |= (u16)data[i++] << 8;
write_eeprom(cp->regs, offset, val, addr_len);
offset++;
}
if (i < len) {
val = read_eeprom(cp->regs, offset, addr_len) & 0xff00;
val |= (u16)data[i];
write_eeprom(cp->regs, offset, val, addr_len);
}
spin_unlock_irq(&cp->lock);
return 0;
}
/* Put the board into D3cold state and wait for WakeUp signal */
static void cp_set_d3_state (struct cp_private *cp)
{
......
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