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path: root/drivers/net/wireless/rtl818x/rtl8180/dev.c
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Diffstat (limited to 'drivers/net/wireless/rtl818x/rtl8180/dev.c')
-rw-r--r--drivers/net/wireless/rtl818x/rtl8180/dev.c91
1 files changed, 62 insertions, 29 deletions
diff --git a/drivers/net/wireless/rtl818x/rtl8180/dev.c b/drivers/net/wireless/rtl818x/rtl8180/dev.c
index 2c1c02bafa10..026d912f516b 100644
--- a/drivers/net/wireless/rtl818x/rtl8180/dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8180/dev.c
@@ -16,6 +16,7 @@
*
* based also on:
* - portions of rtl8187se Linux staging driver, Copyright Realtek corp.
+ * (available in drivers/staging/rtl8187se directory of Linux 3.14)
* - other GPL, unpublished (until now), Linux driver code,
* Copyright Larry Finger <Larry.Finger@lwfinger.net>
*
@@ -63,7 +64,7 @@ MODULE_AUTHOR("Andrea Merello <andrea.merello@gmail.com>");
MODULE_DESCRIPTION("RTL8180 / RTL8185 / RTL8187SE PCI wireless driver");
MODULE_LICENSE("GPL");
-static DEFINE_PCI_DEVICE_TABLE(rtl8180_table) = {
+static const struct pci_device_id rtl8180_table[] = {
/* rtl8187se */
{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8199) },
@@ -209,7 +210,7 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
struct rtl8180_priv *priv = dev->priv;
struct rtl818x_rx_cmd_desc *cmd_desc;
unsigned int count = 32;
- u8 signal, agc, sq;
+ u8 agc, sq, signal = 1;
dma_addr_t mapping;
while (count--) {
@@ -222,12 +223,20 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
struct rtl8187se_rx_desc *desc = entry;
flags = le32_to_cpu(desc->flags);
+ /* if ownership flag is set, then we can trust the
+ * HW has written other fields. We must not trust
+ * other descriptor data read before we checked (read)
+ * the ownership flag
+ */
+ rmb();
flags2 = le32_to_cpu(desc->flags2);
tsft = le64_to_cpu(desc->tsft);
} else {
struct rtl8180_rx_desc *desc = entry;
flags = le32_to_cpu(desc->flags);
+ /* same as above */
+ rmb();
flags2 = le32_to_cpu(desc->flags2);
tsft = le64_to_cpu(desc->tsft);
}
@@ -266,18 +275,21 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
rx_status.rate_idx = (flags >> 20) & 0xF;
agc = (flags2 >> 17) & 0x7F;
- if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
+ switch (priv->chip_family) {
+ case RTL818X_CHIP_FAMILY_RTL8185:
if (rx_status.rate_idx > 3)
- signal = 90 - clamp_t(u8, agc, 25, 90);
+ signal = -clamp_t(u8, agc, 25, 90) - 9;
else
- signal = 95 - clamp_t(u8, agc, 30, 95);
- } else if (priv->chip_family ==
- RTL818X_CHIP_FAMILY_RTL8180) {
+ signal = -clamp_t(u8, agc, 30, 95);
+ break;
+ case RTL818X_CHIP_FAMILY_RTL8180:
sq = flags2 & 0xff;
signal = priv->rf->calc_rssi(agc, sq);
- } else {
+ break;
+ case RTL818X_CHIP_FAMILY_RTL8187SE:
/* TODO: rtl8187se rssi */
signal = 10;
+ break;
}
rx_status.signal = signal;
rx_status.freq = dev->conf.chandef.chan->center_freq;
@@ -336,7 +348,6 @@ static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
info->flags |= IEEE80211_TX_STAT_ACK;
info->status.rates[0].count = (flags & 0xFF) + 1;
- info->status.rates[1].idx = -1;
ieee80211_tx_status_irqsafe(dev, skb);
if (ring->entries - skb_queue_len(&ring->queue) == 2)
@@ -528,9 +539,7 @@ static void rtl8180_tx(struct ieee80211_hw *dev,
entry->plcp_len = cpu_to_le16(plcp_len);
entry->tx_buf = cpu_to_le32(mapping);
- entry->flags2 = info->control.rates[1].idx >= 0 ?
- ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
- entry->retry_limit = info->control.rates[0].count;
+ entry->retry_limit = info->control.rates[0].count - 1;
/* We must be sure that tx_flags is written last because the HW
* looks at it to check if the rest of data is valid or not
@@ -852,7 +861,7 @@ static int rtl8180_init_hw(struct ieee80211_hw *dev)
if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
- rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
+ rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
} else {
rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
@@ -868,6 +877,16 @@ static int rtl8180_init_hw(struct ieee80211_hw *dev)
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);
+ /* fix eccessive IFS after CTS-to-self */
+ if (priv->map_pio) {
+ u8 reg;
+
+ reg = rtl818x_ioread8(priv, &priv->map->PGSELECT);
+ rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
+ rtl818x_iowrite8(priv, REG_ADDR1(0xff), 0x35);
+ rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
+ } else
+ rtl818x_iowrite8(priv, REG_ADDR1(0x1ff), 0x35);
}
if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
@@ -953,16 +972,13 @@ static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
else
priv->rx_ring_sz = sizeof(struct rtl8180_rx_desc);
- priv->rx_ring = pci_alloc_consistent(priv->pdev,
- priv->rx_ring_sz * 32,
- &priv->rx_ring_dma);
-
+ priv->rx_ring = pci_zalloc_consistent(priv->pdev, priv->rx_ring_sz * 32,
+ &priv->rx_ring_dma);
if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
wiphy_err(dev->wiphy, "Cannot allocate RX ring\n");
return -ENOMEM;
}
- memset(priv->rx_ring, 0, priv->rx_ring_sz * 32);
priv->rx_idx = 0;
for (i = 0; i < 32; i++) {
@@ -1021,14 +1037,14 @@ static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
dma_addr_t dma;
int i;
- ring = pci_alloc_consistent(priv->pdev, sizeof(*ring) * entries, &dma);
+ ring = pci_zalloc_consistent(priv->pdev, sizeof(*ring) * entries,
+ &dma);
if (!ring || (unsigned long)ring & 0xFF) {
wiphy_err(dev->wiphy, "Cannot allocate TX ring (prio = %d)\n",
prio);
return -ENOMEM;
}
- memset(ring, 0, sizeof(*ring)*entries);
priv->tx_ring[prio].desc = ring;
priv->tx_ring[prio].dma = dma;
priv->tx_ring[prio].idx = 0;
@@ -1450,9 +1466,10 @@ static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
vif_priv = (struct rtl8180_vif *)&vif->drv_priv;
if (changed & BSS_CHANGED_BSSID) {
- for (i = 0; i < ETH_ALEN; i++)
- rtl818x_iowrite8(priv, &priv->map->BSSID[i],
- info->bssid[i]);
+ rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->BSSID[0],
+ le16_to_cpu(*(__le16 *)info->bssid));
+ rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->BSSID[2],
+ le32_to_cpu(*(__le32 *)(info->bssid + 2)));
if (is_valid_ether_addr(info->bssid)) {
if (vif->type == NL80211_IFTYPE_ADHOC)
@@ -1723,17 +1740,20 @@ static int rtl8180_probe(struct pci_dev *pdev,
priv = dev->priv;
priv->pdev = pdev;
- dev->max_rates = 2;
+ dev->max_rates = 1;
SET_IEEE80211_DEV(dev, &pdev->dev);
pci_set_drvdata(pdev, dev);
+ priv->map_pio = false;
priv->map = pci_iomap(pdev, 1, mem_len);
- if (!priv->map)
+ if (!priv->map) {
priv->map = pci_iomap(pdev, 0, io_len);
+ priv->map_pio = true;
+ }
if (!priv->map) {
- printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n",
- pci_name(pdev));
+ dev_err(&pdev->dev, "Cannot map device memory/PIO\n");
+ err = -ENOMEM;
goto err_free_dev;
}
@@ -1751,8 +1771,7 @@ static int rtl8180_probe(struct pci_dev *pdev,
dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
- IEEE80211_HW_RX_INCLUDES_FCS |
- IEEE80211_HW_SIGNAL_UNSPEC;
+ IEEE80211_HW_RX_INCLUDES_FCS;
dev->vif_data_size = sizeof(struct rtl8180_vif);
dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC);
@@ -1783,12 +1802,19 @@ static int rtl8180_probe(struct pci_dev *pdev,
case RTL818X_TX_CONF_RTL8187SE:
chip_name = "RTL8187SE";
+ if (priv->map_pio) {
+ dev_err(&pdev->dev,
+ "MMIO failed. PIO not supported on RTL8187SE\n");
+ err = -ENOMEM;
+ goto err_iounmap;
+ }
priv->chip_family = RTL818X_CHIP_FAMILY_RTL8187SE;
break;
default:
printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
pci_name(pdev), reg >> 25);
+ err = -ENODEV;
goto err_iounmap;
}
@@ -1809,6 +1835,11 @@ static int rtl8180_probe(struct pci_dev *pdev,
pci_try_set_mwi(pdev);
}
+ if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185)
+ dev->flags |= IEEE80211_HW_SIGNAL_DBM;
+ else
+ dev->flags |= IEEE80211_HW_SIGNAL_UNSPEC;
+
rtl8180_eeprom_read(priv);
switch (priv->rf_type) {
@@ -1834,12 +1865,14 @@ static int rtl8180_probe(struct pci_dev *pdev,
default:
printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
pci_name(pdev), priv->rf_type);
+ err = -ENODEV;
goto err_iounmap;
}
if (!priv->rf) {
printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
pci_name(pdev), rf_name);
+ err = -ENODEV;
goto err_iounmap;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.