[PATCH 05/10] net: rtl8139: Introduce device private data
Marek Vasut
marek.vasut at gmail.com
Sat May 9 22:34:39 CEST 2020
Introduce rtl8139_pdata, which is a super-structure around eth_device
and tracks per-device state, here the device IO address, PCI BDF, RX
and TX ring position. Pass this structure around instead of the old
non-DM eth_device in preparation for DM conversion.
Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
---
drivers/net/rtl8139.c | 136 ++++++++++++++++++++++++------------------
1 file changed, 78 insertions(+), 58 deletions(-)
diff --git a/drivers/net/rtl8139.c b/drivers/net/rtl8139.c
index 8c305677c7..1c83d1d426 100644
--- a/drivers/net/rtl8139.c
+++ b/drivers/net/rtl8139.c
@@ -188,7 +188,14 @@
#define RTL_STS_RXBADALIGN BIT(1)
#define RTL_STS_RXSTATUSOK BIT(0)
-static unsigned int cur_rx, cur_tx;
+struct rtl8139_priv {
+ struct eth_device dev;
+ unsigned int cur_rx;
+ unsigned int cur_tx;
+ unsigned long ioaddr;
+ pci_dev_t devno;
+ unsigned char enetaddr[6];
+};
/* The RTL8139 can only transmit from a contiguous, aligned memory block. */
static unsigned char tx_buffer[TX_BUF_SIZE] __aligned(4);
@@ -219,43 +226,43 @@ static void rtl8139_eeprom_delay(uintptr_t regbase)
inl(regbase + RTL_REG_CFG9346);
}
-static int rtl8139_read_eeprom(struct eth_device *dev,
+static int rtl8139_read_eeprom(struct rtl8139_priv *priv,
unsigned int location, unsigned int addr_len)
{
unsigned int read_cmd = location | (EE_READ_CMD << addr_len);
- uintptr_t ee_addr = dev->iobase + RTL_REG_CFG9346;
+ uintptr_t ee_addr = priv->ioaddr + RTL_REG_CFG9346;
unsigned int retval = 0;
u8 dataval;
int i;
outb(EE_ENB & ~EE_CS, ee_addr);
outb(EE_ENB, ee_addr);
- rtl8139_eeprom_delay(dev->iobase);
+ rtl8139_eeprom_delay(priv->ioaddr);
/* Shift the read command bits out. */
for (i = 4 + addr_len; i >= 0; i--) {
dataval = (read_cmd & BIT(i)) ? EE_DATA_WRITE : 0;
outb(EE_ENB | dataval, ee_addr);
- rtl8139_eeprom_delay(dev->iobase);
+ rtl8139_eeprom_delay(priv->ioaddr);
outb(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
- rtl8139_eeprom_delay(dev->iobase);
+ rtl8139_eeprom_delay(priv->ioaddr);
}
outb(EE_ENB, ee_addr);
- rtl8139_eeprom_delay(dev->iobase);
+ rtl8139_eeprom_delay(priv->ioaddr);
for (i = 16; i > 0; i--) {
outb(EE_ENB | EE_SHIFT_CLK, ee_addr);
- rtl8139_eeprom_delay(dev->iobase);
+ rtl8139_eeprom_delay(priv->ioaddr);
retval <<= 1;
retval |= inb(ee_addr) & EE_DATA_READ;
outb(EE_ENB, ee_addr);
- rtl8139_eeprom_delay(dev->iobase);
+ rtl8139_eeprom_delay(priv->ioaddr);
}
/* Terminate the EEPROM access. */
outb(~EE_CS, ee_addr);
- rtl8139_eeprom_delay(dev->iobase);
+ rtl8139_eeprom_delay(priv->ioaddr);
return retval;
}
@@ -265,29 +272,29 @@ static const unsigned int rtl8139_rx_config =
(RX_FIFO_THRESH << 13) |
(RX_DMA_BURST << 8);
-static void rtl8139_set_rx_mode(struct eth_device *dev)
+static void rtl8139_set_rx_mode(struct rtl8139_priv *priv)
{
/* !IFF_PROMISC */
unsigned int rx_mode = RTL_REG_RXCONFIG_ACCEPTBROADCAST |
RTL_REG_RXCONFIG_ACCEPTMULTICAST |
RTL_REG_RXCONFIG_ACCEPTMYPHYS;
- outl(rtl8139_rx_config | rx_mode, dev->iobase + RTL_REG_RXCONFIG);
+ outl(rtl8139_rx_config | rx_mode, priv->ioaddr + RTL_REG_RXCONFIG);
- outl(0xffffffff, dev->iobase + RTL_REG_MAR0 + 0);
- outl(0xffffffff, dev->iobase + RTL_REG_MAR0 + 4);
+ outl(0xffffffff, priv->ioaddr + RTL_REG_MAR0 + 0);
+ outl(0xffffffff, priv->ioaddr + RTL_REG_MAR0 + 4);
}
-static void rtl8139_hw_reset(struct eth_device *dev)
+static void rtl8139_hw_reset(struct rtl8139_priv *priv)
{
u8 reg;
int i;
- outb(RTL_REG_CHIPCMD_CMDRESET, dev->iobase + RTL_REG_CHIPCMD);
+ outb(RTL_REG_CHIPCMD_CMDRESET, priv->ioaddr + RTL_REG_CHIPCMD);
/* Give the chip 10ms to finish the reset. */
for (i = 0; i < 100; i++) {
- reg = inb(dev->iobase + RTL_REG_CHIPCMD);
+ reg = inb(priv->ioaddr + RTL_REG_CHIPCMD);
if (!(reg & RTL_REG_CHIPCMD_CMDRESET))
break;
@@ -295,25 +302,25 @@ static void rtl8139_hw_reset(struct eth_device *dev)
}
}
-static void rtl8139_reset(struct eth_device *dev)
+static void rtl8139_reset(struct rtl8139_priv *priv)
{
int i;
- cur_rx = 0;
- cur_tx = 0;
+ priv->cur_rx = 0;
+ priv->cur_tx = 0;
- rtl8139_hw_reset(dev);
+ rtl8139_hw_reset(priv);
for (i = 0; i < ETH_ALEN; i++)
- outb(dev->enetaddr[i], dev->iobase + RTL_REG_MAC0 + i);
+ outb(priv->enetaddr[i], priv->ioaddr + RTL_REG_MAC0 + i);
/* Must enable Tx/Rx before setting transfer thresholds! */
outb(RTL_REG_CHIPCMD_CMDRXENB | RTL_REG_CHIPCMD_CMDTXENB,
- dev->iobase + RTL_REG_CHIPCMD);
+ priv->ioaddr + RTL_REG_CHIPCMD);
/* accept no frames yet! */
- outl(rtl8139_rx_config, dev->iobase + RTL_REG_RXCONFIG);
- outl((TX_DMA_BURST << 8) | 0x03000000, dev->iobase + RTL_REG_TXCONFIG);
+ outl(rtl8139_rx_config, priv->ioaddr + RTL_REG_RXCONFIG);
+ outl((TX_DMA_BURST << 8) | 0x03000000, priv->ioaddr + RTL_REG_TXCONFIG);
/*
* The Linux driver changes RTL_REG_CONFIG1 here to use a different
@@ -328,7 +335,7 @@ static void rtl8139_reset(struct eth_device *dev)
debug_cond(DEBUG_RX, "rx ring address is %p\n", rx_ring);
flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
- outl(phys_to_bus(dev->priv, (int)rx_ring), dev->iobase + RTL_REG_RXBUF);
+ outl(phys_to_bus(priv->devno, (int)rx_ring), priv->ioaddr + RTL_REG_RXBUF);
/*
* If we add multicast support, the RTL_REG_MAR0 register would have
@@ -337,21 +344,22 @@ static void rtl8139_reset(struct eth_device *dev)
* unicast.
*/
outb(RTL_REG_CHIPCMD_CMDRXENB | RTL_REG_CHIPCMD_CMDTXENB,
- dev->iobase + RTL_REG_CHIPCMD);
+ priv->ioaddr + RTL_REG_CHIPCMD);
- outl(rtl8139_rx_config, dev->iobase + RTL_REG_RXCONFIG);
+ outl(rtl8139_rx_config, priv->ioaddr + RTL_REG_RXCONFIG);
/* Start the chip's Tx and Rx process. */
- outl(0, dev->iobase + RTL_REG_RXMISSED);
+ outl(0, priv->ioaddr + RTL_REG_RXMISSED);
- rtl8139_set_rx_mode(dev);
+ rtl8139_set_rx_mode(priv);
/* Disable all known interrupts by setting the interrupt mask. */
- outw(0, dev->iobase + RTL_REG_INTRMASK);
+ outw(0, priv->ioaddr + RTL_REG_INTRMASK);
}
static int rtl8139_send(struct eth_device *dev, void *packet, int length)
{
+ struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
unsigned int len = length;
unsigned long txstatus;
unsigned int status;
@@ -369,13 +377,13 @@ static int rtl8139_send(struct eth_device *dev, void *packet, int length)
tx_buffer[len++] = '\0';
flush_cache((unsigned long)tx_buffer, length);
- outl(phys_to_bus(dev->priv, (unsigned long)tx_buffer),
- dev->iobase + RTL_REG_TXADDR0 + cur_tx * 4);
+ outl(phys_to_bus(priv->devno, (unsigned long)tx_buffer),
+ priv->ioaddr + RTL_REG_TXADDR0 + priv->cur_tx * 4);
outl(((TX_FIFO_THRESH << 11) & 0x003f0000) | len,
- dev->iobase + RTL_REG_TXSTATUS0 + cur_tx * 4);
+ priv->ioaddr + RTL_REG_TXSTATUS0 + priv->cur_tx * 4);
do {
- status = inw(dev->iobase + RTL_REG_INTRSTATUS);
+ status = inw(priv->ioaddr + RTL_REG_INTRSTATUS);
/*
* Only acknlowledge interrupt sources we can properly
* handle here - the RTL_REG_INTRSTATUS_RXOVERFLOW/
@@ -384,26 +392,26 @@ static int rtl8139_send(struct eth_device *dev, void *packet, int length)
*/
status &= RTL_REG_INTRSTATUS_TXOK | RTL_REG_INTRSTATUS_TXERR |
RTL_REG_INTRSTATUS_PCIERR;
- outw(status, dev->iobase + RTL_REG_INTRSTATUS);
+ outw(status, priv->ioaddr + RTL_REG_INTRSTATUS);
if (status)
break;
udelay(10);
} while (i++ < RTL_TIMEOUT);
- txstatus = inl(dev->iobase + RTL_REG_TXSTATUS0 + cur_tx * 4);
+ txstatus = inl(priv->ioaddr + RTL_REG_TXSTATUS0 + priv->cur_tx * 4);
if (!(status & RTL_REG_INTRSTATUS_TXOK)) {
debug_cond(DEBUG_TX,
"tx timeout/error (%d usecs), status %hX txstatus %lX\n",
10 * i, status, txstatus);
- rtl8139_reset(dev);
+ rtl8139_reset(priv);
return 0;
}
- cur_tx = (cur_tx + 1) % NUM_TX_DESC;
+ priv->cur_tx = (priv->cur_tx + 1) % NUM_TX_DESC;
debug_cond(DEBUG_TX, "tx done, status %hX txstatus %lX\n",
status, txstatus);
@@ -413,6 +421,7 @@ static int rtl8139_send(struct eth_device *dev, void *packet, int length)
static int rtl8139_recv(struct eth_device *dev)
{
+ struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
const unsigned int rxstat = RTL_REG_INTRSTATUS_RXFIFOOVER |
RTL_REG_INTRSTATUS_RXOVERFLOW |
RTL_REG_INTRSTATUS_RXOK;
@@ -421,16 +430,16 @@ static int rtl8139_recv(struct eth_device *dev)
unsigned int status;
int length = 0;
- if (inb(dev->iobase + RTL_REG_CHIPCMD) & RTL_REG_CHIPCMD_RXBUFEMPTY)
+ if (inb(priv->ioaddr + RTL_REG_CHIPCMD) & RTL_REG_CHIPCMD_RXBUFEMPTY)
return 0;
- status = inw(dev->iobase + RTL_REG_INTRSTATUS);
+ status = inw(priv->ioaddr + RTL_REG_INTRSTATUS);
/* See below for the rest of the interrupt acknowledges. */
- outw(status & ~rxstat, dev->iobase + RTL_REG_INTRSTATUS);
+ outw(status & ~rxstat, priv->ioaddr + RTL_REG_INTRSTATUS);
debug_cond(DEBUG_RX, "%s: int %hX ", __func__, status);
- ring_offs = cur_rx % RX_BUF_LEN;
+ ring_offs = priv->cur_rx % RX_BUF_LEN;
/* ring_offs is guaranteed being 4-byte aligned */
rx_status = le32_to_cpu(*(unsigned int *)(rx_ring + ring_offs));
rx_size = rx_status >> 16;
@@ -443,7 +452,7 @@ static int rtl8139_recv(struct eth_device *dev)
(rx_size > ETH_FRAME_LEN + 4)) {
printf("rx error %hX\n", rx_status);
/* this clears all interrupts still pending */
- rtl8139_reset(dev);
+ rtl8139_reset(priv);
return 0;
}
@@ -466,45 +475,51 @@ static int rtl8139_recv(struct eth_device *dev)
}
flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
- cur_rx = ROUND(cur_rx + rx_size + 4, 4);
- outw(cur_rx - 16, dev->iobase + RTL_REG_RXBUFPTR);
+ priv->cur_rx = ROUND(priv->cur_rx + rx_size + 4, 4);
+ outw(priv->cur_rx - 16, priv->ioaddr + RTL_REG_RXBUFPTR);
/*
* See RTL8139 Programming Guide V0.1 for the official handling of
* Rx overflow situations. The document itself contains basically
* no usable information, except for a few exception handling rules.
*/
- outw(status & rxstat, dev->iobase + RTL_REG_INTRSTATUS);
+ outw(status & rxstat, priv->ioaddr + RTL_REG_INTRSTATUS);
return length;
}
static int rtl8139_init(struct eth_device *dev, bd_t *bis)
{
- unsigned short *ap = (unsigned short *)dev->enetaddr;
+ struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
+ unsigned short *ap = (unsigned short *)priv->enetaddr;
int addr_len, i;
u8 reg;
/* Bring the chip out of low-power mode. */
- outb(0x00, dev->iobase + RTL_REG_CONFIG1);
+ outb(0x00, priv->ioaddr + RTL_REG_CONFIG1);
- addr_len = rtl8139_read_eeprom(dev, 0, 8) == 0x8129 ? 8 : 6;
+ addr_len = rtl8139_read_eeprom(priv, 0, 8) == 0x8129 ? 8 : 6;
for (i = 0; i < 3; i++)
- *ap++ = le16_to_cpu(rtl8139_read_eeprom(dev, i + 7, addr_len));
+ *ap++ = le16_to_cpu(rtl8139_read_eeprom(priv, i + 7, addr_len));
- rtl8139_reset(dev);
+ rtl8139_reset(priv);
- reg = inb(dev->iobase + RTL_REG_MEDIASTATUS);
+ reg = inb(priv->ioaddr + RTL_REG_MEDIASTATUS);
if (reg & RTL_REG_MEDIASTATUS_MSRLINKFAIL) {
printf("Cable not connected or other link failure\n");
return -1;
}
+ /* Non-DM compatibility */
+ memcpy(priv->dev.enetaddr, priv->enetaddr, 6);
+
return 0;
}
static void rtl8139_stop(struct eth_device *dev)
{
- rtl8139_hw_reset(dev);
+ struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
+
+ rtl8139_hw_reset(priv);
}
static int rtl8139_bcast_addr(struct eth_device *dev, const u8 *bcast_mac,
@@ -526,6 +541,7 @@ static struct pci_device_id supported[] = {
int rtl8139_initialize(bd_t *bis)
{
+ struct rtl8139_priv *priv;
struct eth_device *dev;
int card_number = 0;
pci_dev_t devno;
@@ -543,16 +559,20 @@ int rtl8139_initialize(bd_t *bis)
debug("rtl8139: REALTEK RTL8139 @0x%x\n", iobase);
- dev = calloc(1, sizeof(*dev));
- if (!dev) {
+ priv = calloc(1, sizeof(*priv));
+ if (!priv) {
printf("Can not allocate memory of rtl8139\n");
break;
}
+ priv->devno = devno;
+ priv->ioaddr = (unsigned long)bus_to_phys(devno, iobase);
+
+ dev = &priv->dev;
+
rtl8139_name(dev->name, card_number);
- dev->priv = (void *)devno;
- dev->iobase = (unsigned long)bus_to_phys(devno, iobase);
+ dev->iobase = priv->ioaddr; /* Non-DM compatibility */
dev->init = rtl8139_init;
dev->halt = rtl8139_stop;
dev->send = rtl8139_send;
--
2.25.1
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