blob: 599d36fad53cd28bf9679eb88b44dcf91594fa35 [file] [log] [blame]
/*
* Linux device driver for RTL8180 / RTL8185
*
* Copyright 2007 Michael Wu <flamingice@sourmilk.net>
* Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
*
* Modified for iPXE, June 2009, by Joshua Oreman <oremanj@rwcr.net>
*
* Based on the r8180 driver, which is:
* Copyright 2004-2005 Andrea Merello <andreamrl@tiscali.it>, et al.
*
* Thanks to Realtek for their support!
*
* 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.
*/
FILE_LICENCE(GPL2_ONLY);
#include <stdint.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <byteswap.h>
#include <ipxe/iobuf.h>
#include <ipxe/malloc.h>
#include <ipxe/pci.h>
#include <ipxe/net80211.h>
#include <ipxe/netdevice.h>
#include <ipxe/threewire.h>
#include "rtl818x.h"
/* rtl818x_rates[hw rate number] = rate in 100kbps units */
static const u16 rtl818x_rates[] = {
10, 20, 55, 110, /* 802.11b */
60, 90, 120, 180, 240, 360, 480, 540, /* 802.11g */
0, 0, 0, 0, /* index safely using a value masked with 0xF */
};
#define RTL818X_NR_B_RATES 4
#define RTL818X_NR_RATES 12
/* used by RF drivers */
void rtl818x_write_phy(struct net80211_device *dev, u8 addr, u32 data)
{
struct rtl818x_priv *priv = dev->priv;
int i = 10;
u32 buf;
buf = (data << 8) | addr;
rtl818x_iowrite32(priv, (u32 *)&priv->map->PHY[0], buf | 0x80);
while (i--) {
rtl818x_iowrite32(priv, (u32 *)&priv->map->PHY[0], buf);
if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
return;
}
}
static void rtl818x_handle_rx(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
unsigned int count = RTL818X_RX_RING_SIZE;
while (count--) {
struct rtl818x_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
struct io_buffer *iob = priv->rx_buf[priv->rx_idx];
u32 flags = le32_to_cpu(entry->flags);
if (flags & RTL818X_RX_DESC_FLAG_OWN)
return;
if (flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
RTL818X_RX_DESC_FLAG_FOF |
RTL818X_RX_DESC_FLAG_RX_ERR)) {
/* This is crappy hardware. The Linux driver
doesn't even log these. */
goto done;
} else if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR) {
/* This is actually a corrupt packet. */
DBG2("rtl818x RX:%d CRC fail: flags %08x\n",
priv->rx_idx, flags);
net80211_rx_err(dev, NULL, EIO);
} else {
u32 flags2 = le32_to_cpu(entry->flags2);
struct io_buffer *new_iob = alloc_iob(MAX_RX_SIZE);
if (!new_iob) {
net80211_rx_err(dev, NULL, ENOMEM);
goto done;
}
DBGP("rtl818x RX:%d success: flags %08x %08x\n",
priv->rx_idx, flags, flags2);
iob_put(iob, flags & 0xFFF);
net80211_rx(dev, iob, (flags2 >> 8) & 0x7f,
rtl818x_rates[(flags >> 20) & 0xf]);
iob = new_iob;
priv->rx_buf[priv->rx_idx] = iob;
}
done:
entry->rx_buf = cpu_to_le32(virt_to_bus(iob->data));
entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN | MAX_RX_SIZE);
if (priv->rx_idx == RTL818X_RX_RING_SIZE - 1)
entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
priv->rx_idx = (priv->rx_idx + 1) % RTL818X_RX_RING_SIZE;
}
}
static void rtl818x_handle_tx(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
unsigned int count = RTL818X_TX_RING_SIZE;
while (count--) {
struct rtl818x_tx_desc *entry = &priv->tx_ring[priv->tx_cons];
struct io_buffer *iob = priv->tx_buf[priv->tx_cons];
u32 flags = le32_to_cpu(entry->flags);
int rc;
if ((flags & RTL818X_TX_DESC_FLAG_OWN) || !iob)
return;
rc = 0;
if (!(flags & RTL818X_TX_DESC_FLAG_TX_OK)) {
/* our packet was not ACKed properly */
rc = EIO;
}
net80211_tx_complete(dev, iob, flags & 0xFF, rc);
priv->tx_buf[priv->tx_cons] = NULL;
priv->tx_cons = (priv->tx_cons + 1) % RTL818X_TX_RING_SIZE;
}
}
static void rtl818x_poll(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
u16 reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
if (reg == 0xFFFF)
return;
rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
rtl818x_handle_tx(dev);
if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
rtl818x_handle_rx(dev);
}
#define DIV_ROUND_UP(n,d) (((n)+(d)-1)/(d))
static int rtl818x_tx(struct net80211_device *dev, struct io_buffer *iob)
{
struct rtl818x_priv *priv = dev->priv;
struct rtl818x_tx_desc *entry;
u32 tx_flags;
u16 plcp_len = 0;
int len = iob_len(iob);
tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
RTL818X_TX_DESC_FLAG_LS | (priv->hw_rate << 24) | len;
if (priv->r8185) {
tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
RTL818X_TX_DESC_FLAG_NO_ENC;
} else {
unsigned int remainder;
plcp_len = DIV_ROUND_UP(16 * (len + 4),
(dev->rates[dev->rate] * 2) / 10);
remainder = (16 * (len + 4)) %
((dev->rates[dev->rate] * 2) / 10);
if (remainder > 0 && remainder <= 6)
plcp_len |= 1 << 15;
}
entry = &priv->tx_ring[priv->tx_prod];
if (dev->phy_flags & NET80211_PHY_USE_PROTECTION) {
tx_flags |= RTL818X_TX_DESC_FLAG_CTS;
tx_flags |= priv->hw_rtscts_rate << 19;
entry->rts_duration = net80211_cts_duration(dev, len);
} else {
entry->rts_duration = 0;
}
if (entry->flags & RTL818X_TX_DESC_FLAG_OWN) {
/* card hasn't processed the old packet yet! */
return -EBUSY;
}
priv->tx_buf[priv->tx_prod] = iob;
priv->tx_prod = (priv->tx_prod + 1) % RTL818X_TX_RING_SIZE;
entry->plcp_len = cpu_to_le16(plcp_len);
entry->tx_buf = cpu_to_le32(virt_to_bus(iob->data));
entry->frame_len = cpu_to_le32(len);
entry->flags2 = /* alternate retry rate in 100kbps << 4 */ 0;
entry->retry_limit = RTL818X_MAX_RETRIES;
entry->flags = cpu_to_le32(tx_flags);
rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << 5));
return 0;
}
void rtl818x_set_anaparam(struct rtl818x_priv *priv, u32 anaparam)
{
u8 reg;
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
rtl818x_iowrite8(priv, &priv->map->CONFIG3,
reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
rtl818x_iowrite8(priv, &priv->map->CONFIG3,
reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
}
static int rtl818x_init_hw(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
u16 reg;
rtl818x_iowrite8(priv, &priv->map->CMD, 0);
rtl818x_ioread8(priv, &priv->map->CMD);
mdelay(10);
/* reset */
rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
rtl818x_ioread8(priv, &priv->map->CMD);
reg = rtl818x_ioread8(priv, &priv->map->CMD);
reg &= (1 << 1);
reg |= RTL818X_CMD_RESET;
rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
rtl818x_ioread8(priv, &priv->map->CMD);
mdelay(200);
/* check success of reset */
if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
DBG("rtl818x %s: reset timeout!\n", dev->netdev->name);
return -ETIMEDOUT;
}
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
rtl818x_ioread8(priv, &priv->map->CMD);
mdelay(200);
if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
/* For cardbus */
reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
reg |= 1 << 1;
rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
reg = rtl818x_ioread16(priv, &priv->map->FEMR);
reg |= (1 << 15) | (1 << 14) | (1 << 4);
rtl818x_iowrite16(priv, &priv->map->FEMR, reg);
}
rtl818x_iowrite8(priv, &priv->map->MSR, 0);
if (!priv->r8185)
rtl818x_set_anaparam(priv, priv->anaparam);
rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring_dma);
/* TODO: necessary? specs indicate not */
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
if (priv->r8185) {
reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
}
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
/* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
/* TODO: turn off hw wep on rtl8180 */
rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
if (priv->r8185) {
rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
/* TODO: set ClkRun enable? necessary? */
reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
} else {
rtl818x_iowrite16(priv, &priv->map->BRSR, 0x1);
rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
}
priv->rf->init(dev);
if (priv->r8185)
rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
return 0;
}
static int rtl818x_init_rx_ring(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
struct rtl818x_rx_desc *entry;
int i;
priv->rx_ring = malloc_phys(sizeof(*priv->rx_ring) * RTL818X_RX_RING_SIZE,
RTL818X_RING_ALIGN);
priv->rx_ring_dma = virt_to_bus(priv->rx_ring);
if (!priv->rx_ring) {
DBG("rtl818x %s: cannot allocate RX ring\n", dev->netdev->name);
return -ENOMEM;
}
memset(priv->rx_ring, 0, sizeof(*priv->rx_ring) * RTL818X_RX_RING_SIZE);
priv->rx_idx = 0;
for (i = 0; i < RTL818X_RX_RING_SIZE; i++) {
struct io_buffer *iob = alloc_iob(MAX_RX_SIZE);
entry = &priv->rx_ring[i];
if (!iob)
return -ENOMEM;
priv->rx_buf[i] = iob;
entry->rx_buf = cpu_to_le32(virt_to_bus(iob->data));
entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
MAX_RX_SIZE);
}
entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
return 0;
}
static void rtl818x_free_rx_ring(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
int i;
for (i = 0; i < RTL818X_RX_RING_SIZE; i++) {
free_iob(priv->rx_buf[i]);
priv->rx_buf[i] = NULL;
}
free_phys(priv->rx_ring, sizeof(*priv->rx_ring) * RTL818X_RX_RING_SIZE);
priv->rx_ring = NULL;
}
static int rtl818x_init_tx_ring(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
int i;
priv->tx_ring = malloc_phys(sizeof(*priv->tx_ring) * RTL818X_TX_RING_SIZE,
RTL818X_RING_ALIGN);
priv->tx_ring_dma = virt_to_bus(priv->tx_ring);
if (!priv->tx_ring) {
DBG("rtl818x %s: cannot allocate TX ring\n", dev->netdev->name);
return -ENOMEM;
}
memset(priv->tx_ring, 0, sizeof(*priv->tx_ring) * RTL818X_TX_RING_SIZE);
priv->tx_prod = priv->tx_cons = 0;
for (i = 0; i < RTL818X_TX_RING_SIZE; i++)
priv->tx_ring[i].next_tx_desc = cpu_to_le32(priv->tx_ring_dma +
((i + 1) % RTL818X_TX_RING_SIZE) * sizeof(*priv->tx_ring));
return 0;
}
static void rtl818x_free_tx_ring(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
int i;
for (i = 0; i < RTL818X_TX_RING_SIZE; i++) {
if (priv->tx_buf[i])
net80211_tx_complete(dev, priv->tx_buf[i], 0, ECANCELED);
priv->tx_buf[i] = NULL;
}
free_phys(priv->tx_ring, sizeof(*priv->tx_ring) * RTL818X_TX_RING_SIZE);
priv->tx_ring = NULL;
}
static void rtl818x_irq(struct net80211_device *dev, int enable)
{
struct rtl818x_priv *priv = dev->priv;
rtl818x_iowrite16(priv, &priv->map->INT_MASK, enable? 0xFFFF : 0);
}
/* Sets the MAC address of the card. */
static void rtl818x_set_hwaddr(struct net80211_device *dev, u8 *hwaddr)
{
struct rtl818x_priv *priv = dev->priv;
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
rtl818x_iowrite32(priv, (u32 *)&priv->map->MAC[0],
le32_to_cpu(*(u32 *)hwaddr));
rtl818x_iowrite16(priv, (u16 *)&priv->map->MAC[4],
le16_to_cpu(*(u16 *)(hwaddr + 4)));
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
}
static int rtl818x_start(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
int ret;
u32 reg;
ret = rtl818x_init_rx_ring(dev);
if (ret)
return ret;
ret = rtl818x_init_tx_ring(dev);
if (ret)
goto err_free_rings;
ret = rtl818x_init_hw(dev);
if (ret)
goto err_free_rings;
rtl818x_set_hwaddr(dev, dev->netdev->ll_addr);
rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring_dma);
rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
reg = RTL818X_RX_CONF_ONLYERLPKT |
RTL818X_RX_CONF_RX_AUTORESETPHY |
RTL818X_RX_CONF_MGMT |
RTL818X_RX_CONF_DATA |
(7 << 8 /* MAX RX DMA */) |
RTL818X_RX_CONF_BROADCAST |
RTL818X_RX_CONF_NICMAC;
if (priv->r8185)
reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
else {
reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
? RTL818X_RX_CONF_CSDM1 : 0;
reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
? RTL818X_RX_CONF_CSDM2 : 0;
}
priv->rx_conf = reg;
rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
if (priv->r8185) {
reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
reg |= RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
/* disable early TX */
rtl818x_iowrite8(priv, (u8 *)priv->map + 0xec, 0x3f);
}
reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
reg |= (6 << 21 /* MAX TX DMA */) |
RTL818X_TX_CONF_NO_ICV;
if (priv->r8185)
reg &= ~RTL818X_TX_CONF_PROBE_DTS;
else
reg &= ~RTL818X_TX_CONF_HW_SEQNUM;
/* different meaning, same value on both rtl8185 and rtl8180 */
reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;
rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
reg = rtl818x_ioread8(priv, &priv->map->CMD);
reg |= RTL818X_CMD_RX_ENABLE;
reg |= RTL818X_CMD_TX_ENABLE;
rtl818x_iowrite8(priv, &priv->map->CMD, reg);
DBG("%s rtl818x: started\n", dev->netdev->name);
return 0;
err_free_rings:
rtl818x_free_rx_ring(dev);
if (priv->tx_ring)
rtl818x_free_tx_ring(dev);
DBG("%s rtl818x: failed to start\n", dev->netdev->name);
return ret;
}
static void rtl818x_stop(struct net80211_device *dev)
{
struct rtl818x_priv *priv = dev->priv;
u8 reg;
rtl818x_irq(dev, 0);
reg = rtl818x_ioread8(priv, &priv->map->CMD);
reg &= ~RTL818X_CMD_TX_ENABLE;
reg &= ~RTL818X_CMD_RX_ENABLE;
rtl818x_iowrite8(priv, &priv->map->CMD, reg);
priv->rf->stop(dev);
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
rtl818x_free_rx_ring(dev);
rtl818x_free_tx_ring(dev);
}
static int rtl818x_config(struct net80211_device *dev, int changed)
{
struct rtl818x_priv *priv = dev->priv;
int i;
if (changed & NET80211_CFG_CHANNEL)
priv->rf->set_chan(dev, &dev->channels[dev->channel]);
if (changed & NET80211_CFG_ASSOC) {
for (i = 0; i < ETH_ALEN; i++)
rtl818x_iowrite8(priv, &priv->map->BSSID[i], dev->bssid[i]);
rtl818x_iowrite8(priv, &priv->map->MSR,
dev->state & NET80211_ASSOCIATED?
RTL818X_MSR_INFRA : RTL818X_MSR_NO_LINK);
}
if (changed & NET80211_CFG_PHY_PARAMS)
priv->rf->conf_erp(dev);
if (changed & NET80211_CFG_RATE) {
/* figure out the hardware rate number for the new
logical rate */
int hw_rate;
for (hw_rate = 0; hw_rate < RTL818X_NR_RATES &&
rtl818x_rates[hw_rate] != dev->rates[dev->rate];
hw_rate++)
;
if (hw_rate >= RTL818X_NR_RATES)
return -EINVAL;
priv->hw_rate = hw_rate;
/* and the RTS/CTS rate */
for (hw_rate = 0; hw_rate < RTL818X_NR_RATES &&
rtl818x_rates[hw_rate] !=
dev->rates[dev->rtscts_rate];
hw_rate++)
;
if (hw_rate >= RTL818X_NR_RATES)
hw_rate = priv->hw_rate;
priv->hw_rtscts_rate = hw_rate;
}
return 0;
}
static const u8 rtl818x_eeprom_bits[] = {
[SPI_BIT_SCLK] = RTL818X_EEPROM_CMD_CK,
[SPI_BIT_MISO] = RTL818X_EEPROM_CMD_READ,
[SPI_BIT_MOSI] = RTL818X_EEPROM_CMD_WRITE,
[SPI_BIT_SS(0)] = RTL818X_EEPROM_CMD_CS,
};
static int rtl818x_spi_read_bit(struct bit_basher *basher, unsigned int bit_id)
{
struct rtl818x_priv *priv = container_of(basher, struct rtl818x_priv,
spibit.basher);
u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
return reg & rtl818x_eeprom_bits[bit_id];
}
static void rtl818x_spi_write_bit(struct bit_basher *basher,
unsigned int bit_id, unsigned long data)
{
struct rtl818x_priv *priv = container_of(basher, struct rtl818x_priv,
spibit.basher);
u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
u8 mask = rtl818x_eeprom_bits[bit_id];
reg = (reg & ~mask) | (data & mask);
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
udelay(10);
}
static struct bit_basher_operations rtl818x_basher_ops = {
.read = rtl818x_spi_read_bit,
.write = rtl818x_spi_write_bit,
};
#if DBGLVL_MAX
static const char *rtl818x_rf_names[] = {
NULL, /* no 0 */
"Intersil", "RFMD", /* unsupported 1-2 */
"SA2400", "max2820", "GRF5101", /* supported 3-5 */
NULL, NULL, NULL, /* no 6-8 */
"RTL8225", /* supported 9 */
"RTL8255", /* unsupported 10 */
};
#define RTL818X_NR_RF_NAMES 11
#endif
struct net80211_device_operations rtl818x_operations = {
.open = rtl818x_start,
.close = rtl818x_stop,
.transmit = rtl818x_tx,
.poll = rtl818x_poll,
.irq = rtl818x_irq,
.config = rtl818x_config,
};
int rtl818x_probe(struct pci_device *pdev )
{
struct net80211_device *dev;
struct rtl818x_priv *priv;
struct rtl818x_rf_ops *rf;
int err, i;
const char *chip_name;
u32 reg;
u16 eeprom_val;
struct net80211_hw_info *hwinfo;
hwinfo = zalloc(sizeof(*hwinfo));
if (!hwinfo) {
DBG("rtl818x: hwinfo alloc failed\n");
err = -ENOMEM;
goto err_alloc_hwinfo;
}
adjust_pci_device(pdev);
dev = net80211_alloc(sizeof(*priv));
if (!dev) {
DBG("rtl818x: net80211 alloc failed\n");
err = -ENOMEM;
goto err_alloc_dev;
}
priv = dev->priv;
priv->pdev = pdev;
dev->netdev->dev = &pdev->dev;
priv->map = (struct rtl818x_csr *)pdev->ioaddr;
if (!priv->map) {
DBG("rtl818x: cannot find device memory\n");
err = -ENXIO;
goto err_free_dev;
}
reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
reg &= RTL818X_TX_CONF_HWVER_MASK;
switch (reg) {
case RTL818X_TX_CONF_R8180_ABCD:
chip_name = "0";
break;
case RTL818X_TX_CONF_R8180_F:
chip_name = "0vF";
break;
case RTL818X_TX_CONF_R8185_ABC:
chip_name = "5";
break;
case RTL818X_TX_CONF_R8185_D:
chip_name = "5vD";
break;
default:
DBG("rtl818x: Unknown chip! (0x%x)\n", reg >> 25);
err = -ENOSYS;
goto err_free_dev;
}
priv->r8185 = reg & RTL818X_TX_CONF_R8185_ABC;
hwinfo->bands = NET80211_BAND_BIT_2GHZ;
hwinfo->flags = NET80211_HW_RX_HAS_FCS;
hwinfo->signal_type = NET80211_SIGNAL_ARBITRARY;
hwinfo->signal_max = 65;
hwinfo->channel_change_time = 1000;
memcpy(hwinfo->rates[NET80211_BAND_2GHZ], rtl818x_rates,
sizeof(*rtl818x_rates) * RTL818X_NR_RATES);
if (priv->r8185) {
hwinfo->modes = NET80211_MODE_B | NET80211_MODE_G;
hwinfo->nr_rates[NET80211_BAND_2GHZ] = RTL818X_NR_RATES;
} else {
hwinfo->modes = NET80211_MODE_B;
hwinfo->nr_rates[NET80211_BAND_2GHZ] = RTL818X_NR_B_RATES;
}
priv->spibit.basher.op = &rtl818x_basher_ops;
priv->spibit.bus.mode = SPI_MODE_THREEWIRE;
init_spi_bit_basher(&priv->spibit);
DBG2("rtl818x RX_CONF: %08x\n", rtl818x_ioread32(priv, &priv->map->RX_CONF));
if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
init_at93c66(&priv->eeprom, 16);
else
init_at93c46(&priv->eeprom, 16);
priv->eeprom.bus = &priv->spibit.bus;
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_PROGRAM);
rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
udelay(10);
nvs_read(&priv->eeprom.nvs, 0x06, &eeprom_val, 2);
DBG2("rtl818x eeprom val = %04x\n", eeprom_val);
eeprom_val &= 0xFF;
priv->rf = NULL;
for_each_table_entry(rf, RTL818X_RF_DRIVERS) {
if (rf->id == eeprom_val) {
priv->rf = rf;
break;
}
}
if (!priv->rf) {
#if DBGLVL_MAX
if (eeprom_val < RTL818X_NR_RF_NAMES &&
rtl818x_rf_names[eeprom_val] != NULL)
DBG("rtl818x: %s RF frontend not supported!\n",
rtl818x_rf_names[eeprom_val]);
else
DBG("rtl818x: RF frontend #%d not recognized!\n",
eeprom_val);
#endif
err = -ENOSYS;
goto err_free_dev;
}
nvs_read(&priv->eeprom.nvs, 0x17, &eeprom_val, 2);
priv->csthreshold = eeprom_val >> 8;
if (!priv->r8185) {
nvs_read(&priv->eeprom.nvs, 0xD, &priv->anaparam, 4);
nvs_read(&priv->eeprom.nvs, 0x19, &priv->rfparam, 2);
priv->anaparam = le32_to_cpu(priv->anaparam);
priv->rfparam = le16_to_cpu(priv->rfparam);
}
/* read the MAC address */
nvs_read(&priv->eeprom.nvs, 0x7, hwinfo->hwaddr, 6);
/* CCK TX power */
for (i = 0; i < 14; i += 2) {
u16 txpwr;
nvs_read(&priv->eeprom.nvs, 0x10 + (i >> 1), &txpwr, 2);
priv->txpower[i] = txpwr & 0xFF;
priv->txpower[i + 1] = txpwr >> 8;
}
/* OFDM TX power */
if (priv->r8185) {
for (i = 0; i < 14; i += 2) {
u16 txpwr;
nvs_read(&priv->eeprom.nvs, 0x20 + (i >> 1), &txpwr, 2);
priv->txpower[i] |= (txpwr & 0xFF) << 8;
priv->txpower[i + 1] |= txpwr & 0xFF00;
}
}
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
err = net80211_register(dev, &rtl818x_operations, hwinfo);
if (err) {
DBG("rtl818x: cannot register device\n");
goto err_free_dev;
}
free(hwinfo);
DBG("rtl818x: Realtek RTL818%s (RF chip %s) with address %s\n",
chip_name, priv->rf->name, netdev_addr(dev->netdev));
return 0;
err_free_dev:
pci_set_drvdata(pdev, NULL);
net80211_free(dev);
err_alloc_dev:
free(hwinfo);
err_alloc_hwinfo:
return err;
}
void rtl818x_remove(struct pci_device *pdev)
{
struct net80211_device *dev = pci_get_drvdata(pdev);
if (!dev)
return;
net80211_unregister(dev);
net80211_free(dev);
}