/* * Linux device driver for RTL8180 / RTL8185 * * Copyright 2007 Michael Wu <flamingice@sourmilk.net> * Copyright 2007 Andrea Merello <andreamrl@tiscali.it> * * 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. */ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/etherdevice.h> #include <linux/eeprom_93cx6.h> #include <linux/module.h> #include <net/mac80211.h> #include "rtl8180.h" #include "rtl8225.h" #include "sa2400.h" #include "max2820.h" #include "grf5101.h" MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>"); MODULE_DESCRIPTION("RTL8180 / RTL8185 PCI wireless driver"); MODULE_LICENSE("GPL"); static DEFINE_PCI_DEVICE_TABLE(rtl8180_table) = { /* rtl8185 */ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8185) }, { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x700f) }, { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x701f) }, /* rtl8180 */ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8180) }, { PCI_DEVICE(0x1799, 0x6001) }, { PCI_DEVICE(0x1799, 0x6020) }, { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x3300) }, { } }; MODULE_DEVICE_TABLE(pci, rtl8180_table); static const struct ieee80211_rate rtl818x_rates[] = { { .bitrate = 10, .hw_value = 0, }, { .bitrate = 20, .hw_value = 1, }, { .bitrate = 55, .hw_value = 2, }, { .bitrate = 110, .hw_value = 3, }, { .bitrate = 60, .hw_value = 4, }, { .bitrate = 90, .hw_value = 5, }, { .bitrate = 120, .hw_value = 6, }, { .bitrate = 180, .hw_value = 7, }, { .bitrate = 240, .hw_value = 8, }, { .bitrate = 360, .hw_value = 9, }, { .bitrate = 480, .hw_value = 10, }, { .bitrate = 540, .hw_value = 11, }, }; static const struct ieee80211_channel rtl818x_channels[] = { { .center_freq = 2412 }, { .center_freq = 2417 }, { .center_freq = 2422 }, { .center_freq = 2427 }, { .center_freq = 2432 }, { .center_freq = 2437 }, { .center_freq = 2442 }, { .center_freq = 2447 }, { .center_freq = 2452 }, { .center_freq = 2457 }, { .center_freq = 2462 }, { .center_freq = 2467 }, { .center_freq = 2472 }, { .center_freq = 2484 }, }; void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data) { struct rtl8180_priv *priv = dev->priv; int i = 10; u32 buf; buf = (data << 8) | addr; rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf | 0x80); while (i--) { rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf); if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF)) return; } } static void rtl8180_handle_rx(struct ieee80211_hw *dev) { struct rtl8180_priv *priv = dev->priv; unsigned int count = 32; u8 signal, agc, sq; while (count--) { struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx]; struct sk_buff *skb = priv->rx_buf[priv->rx_idx]; u32 flags = le32_to_cpu(entry->flags); if (flags & RTL818X_RX_DESC_FLAG_OWN) return; if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL | RTL818X_RX_DESC_FLAG_FOF | RTL818X_RX_DESC_FLAG_RX_ERR))) goto done; else { u32 flags2 = le32_to_cpu(entry->flags2); struct ieee80211_rx_status rx_status = {0}; struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_SIZE); if (unlikely(!new_skb)) goto done; pci_unmap_single(priv->pdev, *((dma_addr_t *)skb->cb), MAX_RX_SIZE, PCI_DMA_FROMDEVICE); skb_put(skb, flags & 0xFFF); rx_status.antenna = (flags2 >> 15) & 1; rx_status.rate_idx = (flags >> 20) & 0xF; agc = (flags2 >> 17) & 0x7F; if (priv->r8185) { if (rx_status.rate_idx > 3) signal = 90 - clamp_t(u8, agc, 25, 90); else signal = 95 - clamp_t(u8, agc, 30, 95); } else { sq = flags2 & 0xff; signal = priv->rf->calc_rssi(agc, sq); } rx_status.signal = signal; rx_status.freq = dev->conf.channel->center_freq; rx_status.band = dev->conf.channel->band; rx_status.mactime = le64_to_cpu(entry->tsft); rx_status.flag |= RX_FLAG_MACTIME_MPDU; if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR) rx_status.flag |= RX_FLAG_FAILED_FCS_CRC; memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); ieee80211_rx_irqsafe(dev, skb); skb = new_skb; priv->rx_buf[priv->rx_idx] = skb; *((dma_addr_t *) skb->cb) = pci_map_single(priv->pdev, skb_tail_pointer(skb), MAX_RX_SIZE, PCI_DMA_FROMDEVICE); } done: entry->rx_buf = cpu_to_le32(*((dma_addr_t *)skb->cb)); entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN | MAX_RX_SIZE); if (priv->rx_idx == 31) entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR); priv->rx_idx = (priv->rx_idx + 1) % 32; } } static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio) { struct rtl8180_priv *priv = dev->priv; struct rtl8180_tx_ring *ring = &priv->tx_ring[prio]; while (skb_queue_len(&ring->queue)) { struct rtl8180_tx_desc *entry = &ring->desc[ring->idx]; struct sk_buff *skb; struct ieee80211_tx_info *info; u32 flags = le32_to_cpu(entry->flags); if (flags & RTL818X_TX_DESC_FLAG_OWN) return; ring->idx = (ring->idx + 1) % ring->entries; skb = __skb_dequeue(&ring->queue); pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf), skb->len, PCI_DMA_TODEVICE); info = IEEE80211_SKB_CB(skb); ieee80211_tx_info_clear_status(info); if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && (flags & RTL818X_TX_DESC_FLAG_TX_OK)) 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) ieee80211_wake_queue(dev, prio); } } static irqreturn_t rtl8180_interrupt(int irq, void *dev_id) { struct ieee80211_hw *dev = dev_id; struct rtl8180_priv *priv = dev->priv; u16 reg; spin_lock(&priv->lock); reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS); if (unlikely(reg == 0xFFFF)) { spin_unlock(&priv->lock); return IRQ_HANDLED; } rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg); if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR)) rtl8180_handle_tx(dev, 3); if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR)) rtl8180_handle_tx(dev, 2); if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR)) rtl8180_handle_tx(dev, 1); if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR)) rtl8180_handle_tx(dev, 0); if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR)) rtl8180_handle_rx(dev); spin_unlock(&priv->lock); return IRQ_HANDLED; } static void rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct rtl8180_priv *priv = dev->priv; struct rtl8180_tx_ring *ring; struct rtl8180_tx_desc *entry; unsigned long flags; unsigned int idx, prio; dma_addr_t mapping; u32 tx_flags; u8 rc_flags; u16 plcp_len = 0; __le16 rts_duration = 0; prio = skb_get_queue_mapping(skb); ring = &priv->tx_ring[prio]; mapping = pci_map_single(priv->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS | RTL818X_TX_DESC_FLAG_LS | (ieee80211_get_tx_rate(dev, info)->hw_value << 24) | skb->len; if (priv->r8185) tx_flags |= RTL818X_TX_DESC_FLAG_DMA | RTL818X_TX_DESC_FLAG_NO_ENC; rc_flags = info->control.rates[0].flags; if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) { tx_flags |= RTL818X_TX_DESC_FLAG_RTS; tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19; } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { tx_flags |= RTL818X_TX_DESC_FLAG_CTS; tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19; } if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) rts_duration = ieee80211_rts_duration(dev, priv->vif, skb->len, info); if (!priv->r8185) { unsigned int remainder; plcp_len = DIV_ROUND_UP(16 * (skb->len + 4), (ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10); remainder = (16 * (skb->len + 4)) % ((ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10); if (remainder <= 6) plcp_len |= 1 << 15; } spin_lock_irqsave(&priv->lock, flags); if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) priv->seqno += 0x10; hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); hdr->seq_ctrl |= cpu_to_le16(priv->seqno); } idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries; entry = &ring->desc[idx]; entry->rts_duration = rts_duration; entry->plcp_len = cpu_to_le16(plcp_len); entry->tx_buf = cpu_to_le32(mapping); entry->frame_len = cpu_to_le32(skb->len); 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->flags = cpu_to_le32(tx_flags); __skb_queue_tail(&ring->queue, skb); if (ring->entries - skb_queue_len(&ring->queue) < 2) ieee80211_stop_queue(dev, prio); spin_unlock_irqrestore(&priv->lock, flags); rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4))); } void rtl8180_set_anaparam(struct rtl8180_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 rtl8180_init_hw(struct ieee80211_hw *dev) { struct rtl8180_priv *priv = dev->priv; u16 reg; rtl818x_iowrite8(priv, &priv->map->CMD, 0); rtl818x_ioread8(priv, &priv->map->CMD); msleep(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); msleep(200); /* check success of reset */ if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) { wiphy_err(dev->wiphy, "reset timeout!\n"); return -ETIMEDOUT; } rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD); rtl818x_ioread8(priv, &priv->map->CMD); msleep(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) rtl8180_set_anaparam(priv, priv->anaparam); rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma); rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma); rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma); rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma); rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].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 rtl8180_init_rx_ring(struct ieee80211_hw *dev) { struct rtl8180_priv *priv = dev->priv; struct rtl8180_rx_desc *entry; int i; priv->rx_ring = pci_alloc_consistent(priv->pdev, sizeof(*priv->rx_ring) * 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, sizeof(*priv->rx_ring) * 32); priv->rx_idx = 0; for (i = 0; i < 32; i++) { struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE); dma_addr_t *mapping; entry = &priv->rx_ring[i]; if (!skb) return 0; priv->rx_buf[i] = skb; mapping = (dma_addr_t *)skb->cb; *mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb), MAX_RX_SIZE, PCI_DMA_FROMDEVICE); entry->rx_buf = cpu_to_le32(*mapping); 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 rtl8180_free_rx_ring(struct ieee80211_hw *dev) { struct rtl8180_priv *priv = dev->priv; int i; for (i = 0; i < 32; i++) { struct sk_buff *skb = priv->rx_buf[i]; if (!skb) continue; pci_unmap_single(priv->pdev, *((dma_addr_t *)skb->cb), MAX_RX_SIZE, PCI_DMA_FROMDEVICE); kfree_skb(skb); } pci_free_consistent(priv->pdev, sizeof(*priv->rx_ring) * 32, priv->rx_ring, priv->rx_ring_dma); priv->rx_ring = NULL; } static int rtl8180_init_tx_ring(struct ieee80211_hw *dev, unsigned int prio, unsigned int entries) { struct rtl8180_priv *priv = dev->priv; struct rtl8180_tx_desc *ring; dma_addr_t dma; int i; ring = pci_alloc_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; priv->tx_ring[prio].entries = entries; skb_queue_head_init(&priv->tx_ring[prio].queue); for (i = 0; i < entries; i++) ring[i].next_tx_desc = cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring)); return 0; } static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio) { struct rtl8180_priv *priv = dev->priv; struct rtl8180_tx_ring *ring = &priv->tx_ring[prio]; while (skb_queue_len(&ring->queue)) { struct rtl8180_tx_desc *entry = &ring->desc[ring->idx]; struct sk_buff *skb = __skb_dequeue(&ring->queue); pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf), skb->len, PCI_DMA_TODEVICE); kfree_skb(skb); ring->idx = (ring->idx + 1) % ring->entries; } pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries, ring->desc, ring->dma); ring->desc = NULL; } static int rtl8180_start(struct ieee80211_hw *dev) { struct rtl8180_priv *priv = dev->priv; int ret, i; u32 reg; ret = rtl8180_init_rx_ring(dev); if (ret) return ret; for (i = 0; i < 4; i++) if ((ret = rtl8180_init_tx_ring(dev, i, 16))) goto err_free_rings; ret = rtl8180_init_hw(dev); if (ret) goto err_free_rings; rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma); rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma); rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma); rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma); rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma); ret = request_irq(priv->pdev->irq, rtl8180_interrupt, IRQF_SHARED, KBUILD_MODNAME, dev); if (ret) { wiphy_err(dev->wiphy, "failed to register IRQ handler\n"); goto err_free_rings; } rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF); 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 __iomem *)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); return 0; err_free_rings: rtl8180_free_rx_ring(dev); for (i = 0; i < 4; i++) if (priv->tx_ring[i].desc) rtl8180_free_tx_ring(dev, i); return ret; } static void rtl8180_stop(struct ieee80211_hw *dev) { struct rtl8180_priv *priv = dev->priv; u8 reg; int i; rtl818x_iowrite16(priv, &priv->map->INT_MASK, 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); free_irq(priv->pdev->irq, dev); rtl8180_free_rx_ring(dev); for (i = 0; i < 4; i++) rtl8180_free_tx_ring(dev, i); } static u64 rtl8180_get_tsf(struct ieee80211_hw *dev, struct ieee80211_vif *vif) { struct rtl8180_priv *priv = dev->priv; return rtl818x_ioread32(priv, &priv->map->TSFT[0]) | (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32; } static void rtl8180_beacon_work(struct work_struct *work) { struct rtl8180_vif *vif_priv = container_of(work, struct rtl8180_vif, beacon_work.work); struct ieee80211_vif *vif = container_of((void *)vif_priv, struct ieee80211_vif, drv_priv); struct ieee80211_hw *dev = vif_priv->dev; struct ieee80211_mgmt *mgmt; struct sk_buff *skb; /* don't overflow the tx ring */ if (ieee80211_queue_stopped(dev, 0)) goto resched; /* grab a fresh beacon */ skb = ieee80211_beacon_get(dev, vif); if (!skb) goto resched; /* * update beacon timestamp w/ TSF value * TODO: make hardware update beacon timestamp */ mgmt = (struct ieee80211_mgmt *)skb->data; mgmt->u.beacon.timestamp = cpu_to_le64(rtl8180_get_tsf(dev, vif)); /* TODO: use actual beacon queue */ skb_set_queue_mapping(skb, 0); rtl8180_tx(dev, skb); resched: /* * schedule next beacon * TODO: use hardware support for beacon timing */ schedule_delayed_work(&vif_priv->beacon_work, usecs_to_jiffies(1024 * vif->bss_conf.beacon_int)); } static int rtl8180_add_interface(struct ieee80211_hw *dev, struct ieee80211_vif *vif) { struct rtl8180_priv *priv = dev->priv; struct rtl8180_vif *vif_priv; /* * We only support one active interface at a time. */ if (priv->vif) return -EBUSY; switch (vif->type) { case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: break; default: return -EOPNOTSUPP; } priv->vif = vif; /* Initialize driver private area */ vif_priv = (struct rtl8180_vif *)&vif->drv_priv; vif_priv->dev = dev; INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8180_beacon_work); vif_priv->enable_beacon = false; rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG); rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0], le32_to_cpu(*(__le32 *)vif->addr)); rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4], le16_to_cpu(*(__le16 *)(vif->addr + 4))); rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL); return 0; } static void rtl8180_remove_interface(struct ieee80211_hw *dev, struct ieee80211_vif *vif) { struct rtl8180_priv *priv = dev->priv; priv->vif = NULL; } static int rtl8180_config(struct ieee80211_hw *dev, u32 changed) { struct rtl8180_priv *priv = dev->priv; struct ieee80211_conf *conf = &dev->conf; priv->rf->set_chan(dev, conf); return 0; } static void rtl8180_bss_info_changed(struct ieee80211_hw *dev, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed) { struct rtl8180_priv *priv = dev->priv; struct rtl8180_vif *vif_priv; int i; u8 reg; 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]); if (is_valid_ether_addr(info->bssid)) { if (vif->type == NL80211_IFTYPE_ADHOC) reg = RTL818X_MSR_ADHOC; else reg = RTL818X_MSR_INFRA; } else reg = RTL818X_MSR_NO_LINK; rtl818x_iowrite8(priv, &priv->map->MSR, reg); } if (changed & BSS_CHANGED_ERP_SLOT && priv->rf->conf_erp) priv->rf->conf_erp(dev, info); if (changed & BSS_CHANGED_BEACON_ENABLED) vif_priv->enable_beacon = info->enable_beacon; if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) { cancel_delayed_work_sync(&vif_priv->beacon_work); if (vif_priv->enable_beacon) schedule_work(&vif_priv->beacon_work.work); } } static u64 rtl8180_prepare_multicast(struct ieee80211_hw *dev, struct netdev_hw_addr_list *mc_list) { return netdev_hw_addr_list_count(mc_list); } static void rtl8180_configure_filter(struct ieee80211_hw *dev, unsigned int changed_flags, unsigned int *total_flags, u64 multicast) { struct rtl8180_priv *priv = dev->priv; if (changed_flags & FIF_FCSFAIL) priv->rx_conf ^= RTL818X_RX_CONF_FCS; if (changed_flags & FIF_CONTROL) priv->rx_conf ^= RTL818X_RX_CONF_CTRL; if (changed_flags & FIF_OTHER_BSS) priv->rx_conf ^= RTL818X_RX_CONF_MONITOR; if (*total_flags & FIF_ALLMULTI || multicast > 0) priv->rx_conf |= RTL818X_RX_CONF_MULTICAST; else priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST; *total_flags = 0; if (priv->rx_conf & RTL818X_RX_CONF_FCS) *total_flags |= FIF_FCSFAIL; if (priv->rx_conf & RTL818X_RX_CONF_CTRL) *total_flags |= FIF_CONTROL; if (priv->rx_conf & RTL818X_RX_CONF_MONITOR) *total_flags |= FIF_OTHER_BSS; if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST) *total_flags |= FIF_ALLMULTI; rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf); } static const struct ieee80211_ops rtl8180_ops = { .tx = rtl8180_tx, .start = rtl8180_start, .stop = rtl8180_stop, .add_interface = rtl8180_add_interface, .remove_interface = rtl8180_remove_interface, .config = rtl8180_config, .bss_info_changed = rtl8180_bss_info_changed, .prepare_multicast = rtl8180_prepare_multicast, .configure_filter = rtl8180_configure_filter, .get_tsf = rtl8180_get_tsf, }; static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom) { struct ieee80211_hw *dev = eeprom->data; struct rtl8180_priv *priv = dev->priv; u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD); eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE; eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ; eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK; eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS; } static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom) { struct ieee80211_hw *dev = eeprom->data; struct rtl8180_priv *priv = dev->priv; u8 reg = 2 << 6; if (eeprom->reg_data_in) reg |= RTL818X_EEPROM_CMD_WRITE; if (eeprom->reg_data_out) reg |= RTL818X_EEPROM_CMD_READ; if (eeprom->reg_data_clock) reg |= RTL818X_EEPROM_CMD_CK; if (eeprom->reg_chip_select) reg |= RTL818X_EEPROM_CMD_CS; rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg); rtl818x_ioread8(priv, &priv->map->EEPROM_CMD); udelay(10); } static int __devinit rtl8180_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct ieee80211_hw *dev; struct rtl8180_priv *priv; unsigned long mem_addr, mem_len; unsigned int io_addr, io_len; int err, i; struct eeprom_93cx6 eeprom; const char *chip_name, *rf_name = NULL; u32 reg; u16 eeprom_val; u8 mac_addr[ETH_ALEN]; err = pci_enable_device(pdev); if (err) { printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n", pci_name(pdev)); return err; } err = pci_request_regions(pdev, KBUILD_MODNAME); if (err) { printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n", pci_name(pdev)); return err; } io_addr = pci_resource_start(pdev, 0); io_len = pci_resource_len(pdev, 0); mem_addr = pci_resource_start(pdev, 1); mem_len = pci_resource_len(pdev, 1); if (mem_len < sizeof(struct rtl818x_csr) || io_len < sizeof(struct rtl818x_csr)) { printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n", pci_name(pdev)); err = -ENOMEM; goto err_free_reg; } if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) || (err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))) { printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n", pci_name(pdev)); goto err_free_reg; } pci_set_master(pdev); dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops); if (!dev) { printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n", pci_name(pdev)); err = -ENOMEM; goto err_free_reg; } priv = dev->priv; priv->pdev = pdev; dev->max_rates = 2; SET_IEEE80211_DEV(dev, &pdev->dev); pci_set_drvdata(pdev, dev); priv->map = pci_iomap(pdev, 1, mem_len); if (!priv->map) priv->map = pci_iomap(pdev, 0, io_len); if (!priv->map) { printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n", pci_name(pdev)); goto err_free_dev; } BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels)); BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates)); memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels)); memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates)); priv->band.band = IEEE80211_BAND_2GHZ; priv->band.channels = priv->channels; priv->band.n_channels = ARRAY_SIZE(rtl818x_channels); priv->band.bitrates = priv->rates; priv->band.n_bitrates = 4; 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; dev->vif_data_size = sizeof(struct rtl8180_vif); dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); dev->queues = 1; dev->max_signal = 65; reg = rtl818x_ioread32(priv, &priv->map->TX_CONF); reg &= RTL818X_TX_CONF_HWVER_MASK; switch (reg) { case RTL818X_TX_CONF_R8180_ABCD: chip_name = "RTL8180"; break; case RTL818X_TX_CONF_R8180_F: chip_name = "RTL8180vF"; break; case RTL818X_TX_CONF_R8185_ABC: chip_name = "RTL8185"; break; case RTL818X_TX_CONF_R8185_D: chip_name = "RTL8185vD"; break; default: printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n", pci_name(pdev), reg >> 25); goto err_iounmap; } priv->r8185 = reg & RTL818X_TX_CONF_R8185_ABC; if (priv->r8185) { priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates); pci_try_set_mwi(pdev); } eeprom.data = dev; eeprom.register_read = rtl8180_eeprom_register_read; eeprom.register_write = rtl8180_eeprom_register_write; if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6)) eeprom.width = PCI_EEPROM_WIDTH_93C66; else eeprom.width = PCI_EEPROM_WIDTH_93C46; rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_PROGRAM); rtl818x_ioread8(priv, &priv->map->EEPROM_CMD); udelay(10); eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val); eeprom_val &= 0xFF; switch (eeprom_val) { case 1: rf_name = "Intersil"; break; case 2: rf_name = "RFMD"; break; case 3: priv->rf = &sa2400_rf_ops; break; case 4: priv->rf = &max2820_rf_ops; break; case 5: priv->rf = &grf5101_rf_ops; break; case 9: priv->rf = rtl8180_detect_rf(dev); break; case 10: rf_name = "RTL8255"; break; default: printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n", pci_name(pdev), eeprom_val); goto err_iounmap; } if (!priv->rf) { printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n", pci_name(pdev), rf_name); goto err_iounmap; } eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val); priv->csthreshold = eeprom_val >> 8; if (!priv->r8185) { __le32 anaparam; eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2); priv->anaparam = le32_to_cpu(anaparam); eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam); } eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)mac_addr, 3); if (!is_valid_ether_addr(mac_addr)) { printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using" " randomly generated MAC addr\n", pci_name(pdev)); random_ether_addr(mac_addr); } SET_IEEE80211_PERM_ADDR(dev, mac_addr); /* CCK TX power */ for (i = 0; i < 14; i += 2) { u16 txpwr; eeprom_93cx6_read(&eeprom, 0x10 + (i >> 1), &txpwr); priv->channels[i].hw_value = txpwr & 0xFF; priv->channels[i + 1].hw_value = txpwr >> 8; } /* OFDM TX power */ if (priv->r8185) { for (i = 0; i < 14; i += 2) { u16 txpwr; eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr); priv->channels[i].hw_value |= (txpwr & 0xFF) << 8; priv->channels[i + 1].hw_value |= txpwr & 0xFF00; } } rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL); spin_lock_init(&priv->lock); err = ieee80211_register_hw(dev); if (err) { printk(KERN_ERR "%s (rtl8180): Cannot register device\n", pci_name(pdev)); goto err_iounmap; } wiphy_info(dev->wiphy, "hwaddr %pm, %s + %s\n", mac_addr, chip_name, priv->rf->name); return 0; err_iounmap: iounmap(priv->map); err_free_dev: pci_set_drvdata(pdev, NULL); ieee80211_free_hw(dev); err_free_reg: pci_release_regions(pdev); pci_disable_device(pdev); return err; } static void __devexit rtl8180_remove(struct pci_dev *pdev) { struct ieee80211_hw *dev = pci_get_drvdata(pdev); struct rtl8180_priv *priv; if (!dev) return; ieee80211_unregister_hw(dev); priv = dev->priv; pci_iounmap(pdev, priv->map); pci_release_regions(pdev); pci_disable_device(pdev); ieee80211_free_hw(dev); } #ifdef CONFIG_PM static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state) { pci_save_state(pdev); pci_set_power_state(pdev, pci_choose_state(pdev, state)); return 0; } static int rtl8180_resume(struct pci_dev *pdev) { pci_set_power_state(pdev, PCI_D0); pci_restore_state(pdev); return 0; } #endif /* CONFIG_PM */ static struct pci_driver rtl8180_driver = { .name = KBUILD_MODNAME, .id_table = rtl8180_table, .probe = rtl8180_probe, .remove = __devexit_p(rtl8180_remove), #ifdef CONFIG_PM .suspend = rtl8180_suspend, .resume = rtl8180_resume, #endif /* CONFIG_PM */ }; static int __init rtl8180_init(void) { return pci_register_driver(&rtl8180_driver); } static void __exit rtl8180_exit(void) { pci_unregister_driver(&rtl8180_driver); } module_init(rtl8180_init); module_exit(rtl8180_exit);