--- /dev/null
+
+/*
+ * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP)
+ *
+ * Copyright (c) 2003, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2004-2007, Michael Wu <flamingice@sourmilk.net>
+ * Some parts copyright (c) 2003 by David Young <dyoung@pobox.com>
+ * and used with permission.
+ *
+ * Much thanks to Infineon-ADMtek for their support of this driver.
+ *
+ * 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. See README and COPYING for
+ * more details.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/if.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/etherdevice.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/crc32.h>
+#include <linux/eeprom_93cx6.h>
+#include <linux/module.h>
+#include <net/mac80211.h>
+
+#include "adm8211.h"
+
+MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
+MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
+MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
+MODULE_SUPPORTED_DEVICE("ADM8211");
+MODULE_LICENSE("GPL");
+
+static unsigned int tx_ring_size __read_mostly = 16;
+static unsigned int rx_ring_size __read_mostly = 16;
+
+module_param(tx_ring_size, uint, 0);
+module_param(rx_ring_size, uint, 0);
+
+static const struct pci_device_id adm8211_pci_id_table[] = {
+ /* ADMtek ADM8211 */
+ { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
+ { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
+ { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
+ { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
+ { 0 }
+};
+
+static struct ieee80211_rate adm8211_rates[] = {
+ { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
+};
+
+static const struct ieee80211_channel adm8211_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},
+};
+
+
+static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
+{
+ struct adm8211_priv *priv = eeprom->data;
+ u32 reg = ADM8211_CSR_READ(SPR);
+
+ eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
+ eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
+ eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
+ eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
+}
+
+static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
+{
+ struct adm8211_priv *priv = eeprom->data;
+ u32 reg = 0x4000 | ADM8211_SPR_SRS;
+
+ if (eeprom->reg_data_in)
+ reg |= ADM8211_SPR_SDI;
+ if (eeprom->reg_data_out)
+ reg |= ADM8211_SPR_SDO;
+ if (eeprom->reg_data_clock)
+ reg |= ADM8211_SPR_SCLK;
+ if (eeprom->reg_chip_select)
+ reg |= ADM8211_SPR_SCS;
+
+ ADM8211_CSR_WRITE(SPR, reg);
+ ADM8211_CSR_READ(SPR); /* eeprom_delay */
+}
+
+static int adm8211_read_eeprom(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ unsigned int words, i;
+ struct ieee80211_chan_range chan_range;
+ u16 cr49;
+ struct eeprom_93cx6 eeprom = {
+ .data = priv,
+ .register_read = adm8211_eeprom_register_read,
+ .register_write = adm8211_eeprom_register_write
+ };
+
+ if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
+ /* 256 * 16-bit = 512 bytes */
+ eeprom.width = PCI_EEPROM_WIDTH_93C66;
+ words = 256;
+ } else {
+ /* 64 * 16-bit = 128 bytes */
+ eeprom.width = PCI_EEPROM_WIDTH_93C46;
+ words = 64;
+ }
+
+ priv->eeprom_len = words * 2;
+ priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
+ if (!priv->eeprom)
+ return -ENOMEM;
+
+ eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
+
+ cr49 = le16_to_cpu(priv->eeprom->cr49);
+ priv->rf_type = (cr49 >> 3) & 0x7;
+ switch (priv->rf_type) {
+ case ADM8211_TYPE_INTERSIL:
+ case ADM8211_TYPE_RFMD:
+ case ADM8211_TYPE_MARVEL:
+ case ADM8211_TYPE_AIROHA:
+ case ADM8211_TYPE_ADMTEK:
+ break;
+
+ default:
+ if (priv->pdev->revision < ADM8211_REV_CA)
+ priv->rf_type = ADM8211_TYPE_RFMD;
+ else
+ priv->rf_type = ADM8211_TYPE_AIROHA;
+
+ printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
+ pci_name(priv->pdev), (cr49 >> 3) & 0x7);
+ }
+
+ priv->bbp_type = cr49 & 0x7;
+ switch (priv->bbp_type) {
+ case ADM8211_TYPE_INTERSIL:
+ case ADM8211_TYPE_RFMD:
+ case ADM8211_TYPE_MARVEL:
+ case ADM8211_TYPE_AIROHA:
+ case ADM8211_TYPE_ADMTEK:
+ break;
+ default:
+ if (priv->pdev->revision < ADM8211_REV_CA)
+ priv->bbp_type = ADM8211_TYPE_RFMD;
+ else
+ priv->bbp_type = ADM8211_TYPE_ADMTEK;
+
+ printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
+ pci_name(priv->pdev), cr49 >> 3);
+ }
+
+ if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
+ printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
+ pci_name(priv->pdev), priv->eeprom->country_code);
+
+ chan_range = cranges[2];
+ } else
+ chan_range = cranges[priv->eeprom->country_code];
+
+ printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
+ pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
+
+ BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
+
+ memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
+ priv->band.channels = priv->channels;
+ priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
+ priv->band.bitrates = adm8211_rates;
+ priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
+
+ for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
+ if (i < chan_range.min || i > chan_range.max)
+ priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
+
+ switch (priv->eeprom->specific_bbptype) {
+ case ADM8211_BBP_RFMD3000:
+ case ADM8211_BBP_RFMD3002:
+ case ADM8211_BBP_ADM8011:
+ priv->specific_bbptype = priv->eeprom->specific_bbptype;
+ break;
+
+ default:
+ if (priv->pdev->revision < ADM8211_REV_CA)
+ priv->specific_bbptype = ADM8211_BBP_RFMD3000;
+ else
+ priv->specific_bbptype = ADM8211_BBP_ADM8011;
+
+ printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
+ pci_name(priv->pdev), priv->eeprom->specific_bbptype);
+ }
+
+ switch (priv->eeprom->specific_rftype) {
+ case ADM8211_RFMD2948:
+ case ADM8211_RFMD2958:
+ case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
+ case ADM8211_MAX2820:
+ case ADM8211_AL2210L:
+ priv->transceiver_type = priv->eeprom->specific_rftype;
+ break;
+
+ default:
+ if (priv->pdev->revision == ADM8211_REV_BA)
+ priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
+ else if (priv->pdev->revision == ADM8211_REV_CA)
+ priv->transceiver_type = ADM8211_AL2210L;
+ else if (priv->pdev->revision == ADM8211_REV_AB)
+ priv->transceiver_type = ADM8211_RFMD2948;
+
+ printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
+ pci_name(priv->pdev), priv->eeprom->specific_rftype);
+
+ break;
+ }
+
+ printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
+ "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
+ priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
+
+ return 0;
+}
+
+static inline void adm8211_write_sram(struct ieee80211_hw *dev,
+ u32 addr, u32 data)
+{
+ struct adm8211_priv *priv = dev->priv;
+
+ ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
+ (priv->pdev->revision < ADM8211_REV_BA ?
+ 0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
+ ADM8211_CSR_READ(WEPCTL);
+ msleep(1);
+
+ ADM8211_CSR_WRITE(WESK, data);
+ ADM8211_CSR_READ(WESK);
+ msleep(1);
+}
+
+static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
+ unsigned int addr, u8 *buf,
+ unsigned int len)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg = ADM8211_CSR_READ(WEPCTL);
+ unsigned int i;
+
+ if (priv->pdev->revision < ADM8211_REV_BA) {
+ for (i = 0; i < len; i += 2) {
+ u16 val = buf[i] | (buf[i + 1] << 8);
+ adm8211_write_sram(dev, addr + i / 2, val);
+ }
+ } else {
+ for (i = 0; i < len; i += 4) {
+ u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
+ (buf[i + 2] << 16) | (buf[i + 3] << 24);
+ adm8211_write_sram(dev, addr + i / 4, val);
+ }
+ }
+
+ ADM8211_CSR_WRITE(WEPCTL, reg);
+}
+
+static void adm8211_clear_sram(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg = ADM8211_CSR_READ(WEPCTL);
+ unsigned int addr;
+
+ for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
+ adm8211_write_sram(dev, addr, 0);
+
+ ADM8211_CSR_WRITE(WEPCTL, reg);
+}
+
+static int adm8211_get_stats(struct ieee80211_hw *dev,
+ struct ieee80211_low_level_stats *stats)
+{
+ struct adm8211_priv *priv = dev->priv;
+
+ memcpy(stats, &priv->stats, sizeof(*stats));
+
+ return 0;
+}
+
+static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ unsigned int dirty_tx;
+
+ spin_lock(&priv->lock);
+
+ for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
+ unsigned int entry = dirty_tx % priv->tx_ring_size;
+ u32 status = le32_to_cpu(priv->tx_ring[entry].status);
+ struct ieee80211_tx_info *txi;
+ struct adm8211_tx_ring_info *info;
+ struct sk_buff *skb;
+
+ if (status & TDES0_CONTROL_OWN ||
+ !(status & TDES0_CONTROL_DONE))
+ break;
+
+ info = &priv->tx_buffers[entry];
+ skb = info->skb;
+ txi = IEEE80211_SKB_CB(skb);
+
+ /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
+
+ pci_unmap_single(priv->pdev, info->mapping,
+ info->skb->len, PCI_DMA_TODEVICE);
+
+ ieee80211_tx_info_clear_status(txi);
+
+ skb_pull(skb, sizeof(struct adm8211_tx_hdr));
+ memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
+ if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
+ !(status & TDES0_STATUS_ES))
+ txi->flags |= IEEE80211_TX_STAT_ACK;
+
+ ieee80211_tx_status_irqsafe(dev, skb);
+
+ info->skb = NULL;
+ }
+
+ if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
+ ieee80211_wake_queue(dev, 0);
+
+ priv->dirty_tx = dirty_tx;
+ spin_unlock(&priv->lock);
+}
+
+
+static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ unsigned int entry = priv->cur_rx % priv->rx_ring_size;
+ u32 status;
+ unsigned int pktlen;
+ struct sk_buff *skb, *newskb;
+ unsigned int limit = priv->rx_ring_size;
+ u8 rssi, rate;
+
+ while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
+ if (!limit--)
+ break;
+
+ status = le32_to_cpu(priv->rx_ring[entry].status);
+ rate = (status & RDES0_STATUS_RXDR) >> 12;
+ rssi = le32_to_cpu(priv->rx_ring[entry].length) &
+ RDES1_STATUS_RSSI;
+
+ pktlen = status & RDES0_STATUS_FL;
+ if (pktlen > RX_PKT_SIZE) {
+ if (net_ratelimit())
+ wiphy_debug(dev->wiphy, "frame too long (%d)\n",
+ pktlen);
+ pktlen = RX_PKT_SIZE;
+ }
+
+ if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
+ skb = NULL; /* old buffer will be reused */
+ /* TODO: update RX error stats */
+ /* TODO: check RDES0_STATUS_CRC*E */
+ } else if (pktlen < RX_COPY_BREAK) {
+ skb = dev_alloc_skb(pktlen);
+ if (skb) {
+ pci_dma_sync_single_for_cpu(
+ priv->pdev,
+ priv->rx_buffers[entry].mapping,
+ pktlen, PCI_DMA_FROMDEVICE);
+ memcpy(skb_put(skb, pktlen),
+ skb_tail_pointer(priv->rx_buffers[entry].skb),
+ pktlen);
+ pci_dma_sync_single_for_device(
+ priv->pdev,
+ priv->rx_buffers[entry].mapping,
+ RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
+ }
+ } else {
+ newskb = dev_alloc_skb(RX_PKT_SIZE);
+ if (newskb) {
+ skb = priv->rx_buffers[entry].skb;
+ skb_put(skb, pktlen);
+ pci_unmap_single(
+ priv->pdev,
+ priv->rx_buffers[entry].mapping,
+ RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
+ priv->rx_buffers[entry].skb = newskb;
+ priv->rx_buffers[entry].mapping =
+ pci_map_single(priv->pdev,
+ skb_tail_pointer(newskb),
+ RX_PKT_SIZE,
+ PCI_DMA_FROMDEVICE);
+ } else {
+ skb = NULL;
+ /* TODO: update rx dropped stats */
+ }
+
+ priv->rx_ring[entry].buffer1 =
+ cpu_to_le32(priv->rx_buffers[entry].mapping);
+ }
+
+ priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
+ RDES0_STATUS_SQL);
+ priv->rx_ring[entry].length =
+ cpu_to_le32(RX_PKT_SIZE |
+ (entry == priv->rx_ring_size - 1 ?
+ RDES1_CONTROL_RER : 0));
+
+ if (skb) {
+ struct ieee80211_rx_status rx_status = {0};
+
+ if (priv->pdev->revision < ADM8211_REV_CA)
+ rx_status.signal = rssi;
+ else
+ rx_status.signal = 100 - rssi;
+
+ rx_status.rate_idx = rate;
+
+ rx_status.freq = adm8211_channels[priv->channel - 1].center_freq;
+ rx_status.band = IEEE80211_BAND_2GHZ;
+
+ memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
+ ieee80211_rx_irqsafe(dev, skb);
+ }
+
+ entry = (++priv->cur_rx) % priv->rx_ring_size;
+ }
+
+ /* TODO: check LPC and update stats? */
+}
+
+
+static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
+{
+#define ADM8211_INT(x) \
+do { \
+ if (unlikely(stsr & ADM8211_STSR_ ## x)) \
+ wiphy_debug(dev->wiphy, "%s\n", #x); \
+} while (0)
+
+ struct ieee80211_hw *dev = dev_id;
+ struct adm8211_priv *priv = dev->priv;
+ u32 stsr = ADM8211_CSR_READ(STSR);
+ ADM8211_CSR_WRITE(STSR, stsr);
+ if (stsr == 0xffffffff)
+ return IRQ_HANDLED;
+
+ if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
+ return IRQ_HANDLED;
+
+ if (stsr & ADM8211_STSR_RCI)
+ adm8211_interrupt_rci(dev);
+ if (stsr & ADM8211_STSR_TCI)
+ adm8211_interrupt_tci(dev);
+
+ ADM8211_INT(PCF);
+ ADM8211_INT(BCNTC);
+ ADM8211_INT(GPINT);
+ ADM8211_INT(ATIMTC);
+ ADM8211_INT(TSFTF);
+ ADM8211_INT(TSCZ);
+ ADM8211_INT(SQL);
+ ADM8211_INT(WEPTD);
+ ADM8211_INT(ATIME);
+ ADM8211_INT(TEIS);
+ ADM8211_INT(FBE);
+ ADM8211_INT(REIS);
+ ADM8211_INT(GPTT);
+ ADM8211_INT(RPS);
+ ADM8211_INT(RDU);
+ ADM8211_INT(TUF);
+ ADM8211_INT(TPS);
+
+ return IRQ_HANDLED;
+
+#undef ADM8211_INT
+}
+
+#define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
+static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \
+ u16 addr, u32 value) { \
+ struct adm8211_priv *priv = dev->priv; \
+ unsigned int i; \
+ u32 reg, bitbuf; \
+ \
+ value &= v_mask; \
+ addr &= a_mask; \
+ bitbuf = (value << v_shift) | (addr << a_shift); \
+ \
+ ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \
+ ADM8211_CSR_READ(SYNRF); \
+ ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \
+ ADM8211_CSR_READ(SYNRF); \
+ \
+ if (prewrite) { \
+ ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \
+ ADM8211_CSR_READ(SYNRF); \
+ } \
+ \
+ for (i = 0; i <= bits; i++) { \
+ if (bitbuf & (1 << (bits - i))) \
+ reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \
+ else \
+ reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \
+ \
+ ADM8211_CSR_WRITE(SYNRF, reg); \
+ ADM8211_CSR_READ(SYNRF); \
+ \
+ ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
+ ADM8211_CSR_READ(SYNRF); \
+ ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
+ ADM8211_CSR_READ(SYNRF); \
+ } \
+ \
+ if (postwrite == 1) { \
+ ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \
+ ADM8211_CSR_READ(SYNRF); \
+ } \
+ if (postwrite == 2) { \
+ ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \
+ ADM8211_CSR_READ(SYNRF); \
+ } \
+ \
+ ADM8211_CSR_WRITE(SYNRF, 0); \
+ ADM8211_CSR_READ(SYNRF); \
+}
+
+WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1)
+WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1)
+WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
+WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2)
+
+#undef WRITE_SYN
+
+static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
+{
+ struct adm8211_priv *priv = dev->priv;
+ unsigned int timeout;
+ u32 reg;
+
+ timeout = 10;
+ while (timeout > 0) {
+ reg = ADM8211_CSR_READ(BBPCTL);
+ if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
+ break;
+ timeout--;
+ msleep(2);
+ }
+
+ if (timeout == 0) {
+ wiphy_debug(dev->wiphy,
+ "adm8211_write_bbp(%d,%d) failed prewrite (reg=0x%08x)\n",
+ addr, data, reg);
+ return -ETIMEDOUT;
+ }
+
+ switch (priv->bbp_type) {
+ case ADM8211_TYPE_INTERSIL:
+ reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */
+ break;
+ case ADM8211_TYPE_RFMD:
+ reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
+ (0x01 << 18);
+ break;
+ case ADM8211_TYPE_ADMTEK:
+ reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
+ (0x05 << 18);
+ break;
+ }
+ reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
+
+ ADM8211_CSR_WRITE(BBPCTL, reg);
+
+ timeout = 10;
+ while (timeout > 0) {
+ reg = ADM8211_CSR_READ(BBPCTL);
+ if (!(reg & ADM8211_BBPCTL_WR))
+ break;
+ timeout--;
+ msleep(2);
+ }
+
+ if (timeout == 0) {
+ ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
+ ~ADM8211_BBPCTL_WR);
+ wiphy_debug(dev->wiphy,
+ "adm8211_write_bbp(%d,%d) failed postwrite (reg=0x%08x)\n",
+ addr, data, reg);
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
+{
+ static const u32 adm8211_rfmd2958_reg5[] =
+ {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
+ 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
+ static const u32 adm8211_rfmd2958_reg6[] =
+ {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
+ 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
+
+ struct adm8211_priv *priv = dev->priv;
+ u8 ant_power = priv->ant_power > 0x3F ?
+ priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
+ u8 tx_power = priv->tx_power > 0x3F ?
+ priv->eeprom->tx_power[chan - 1] : priv->tx_power;
+ u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
+ priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
+ u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
+ priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
+ u32 reg;
+
+ ADM8211_IDLE();
+
+ /* Program synthesizer to new channel */
+ switch (priv->transceiver_type) {
+ case ADM8211_RFMD2958:
+ case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
+ adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
+ adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
+
+ adm8211_rf_write_syn_rfmd2958(dev, 0x05,
+ adm8211_rfmd2958_reg5[chan - 1]);
+ adm8211_rf_write_syn_rfmd2958(dev, 0x06,
+ adm8211_rfmd2958_reg6[chan - 1]);
+ break;
+
+ case ADM8211_RFMD2948:
+ adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
+ SI4126_MAIN_XINDIV2);
+ adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
+ SI4126_POWERDOWN_PDIB |
+ SI4126_POWERDOWN_PDRB);
+ adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
+ adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
+ (chan == 14 ?
+ 2110 : (2033 + (chan * 5))));
+ adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
+ adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
+ adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
+ break;
+
+ case ADM8211_MAX2820:
+ adm8211_rf_write_syn_max2820(dev, 0x3,
+ (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
+ break;
+
+ case ADM8211_AL2210L:
+ adm8211_rf_write_syn_al2210l(dev, 0x0,
+ (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
+ break;
+
+ default:
+ wiphy_debug(dev->wiphy, "unsupported transceiver type %d\n",
+ priv->transceiver_type);
+ break;
+ }
+
+ /* write BBP regs */
+ if (priv->bbp_type == ADM8211_TYPE_RFMD) {
+
+ /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
+ /* TODO: remove if SMC 2635W doesn't need this */
+ if (priv->transceiver_type == ADM8211_RFMD2948) {
+ reg = ADM8211_CSR_READ(GPIO);
+ reg &= 0xfffc0000;
+ reg |= ADM8211_CSR_GPIO_EN0;
+ if (chan != 14)
+ reg |= ADM8211_CSR_GPIO_O0;
+ ADM8211_CSR_WRITE(GPIO, reg);
+ }
+
+ if (priv->transceiver_type == ADM8211_RFMD2958) {
+ /* set PCNT2 */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
+ /* set PCNT1 P_DESIRED/MID_BIAS */
+ reg = le16_to_cpu(priv->eeprom->cr49);
+ reg >>= 13;
+ reg <<= 15;
+ reg |= ant_power << 9;
+ adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
+ /* set TXRX TX_GAIN */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
+ (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
+ } else {
+ reg = ADM8211_CSR_READ(PLCPHD);
+ reg &= 0xff00ffff;
+ reg |= tx_power << 18;
+ ADM8211_CSR_WRITE(PLCPHD, reg);
+ }
+
+ ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
+ ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
+ ADM8211_CSR_READ(SYNRF);
+ msleep(30);
+
+ /* RF3000 BBP */
+ if (priv->transceiver_type != ADM8211_RFMD2958)
+ adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
+ tx_power<<2);
+ adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
+ adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
+ adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
+ priv->eeprom->cr28 : 0);
+ adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
+
+ ADM8211_CSR_WRITE(SYNRF, 0);
+
+ /* Nothing to do for ADMtek BBP */
+ } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
+ wiphy_debug(dev->wiphy, "unsupported BBP type %d\n",
+ priv->bbp_type);
+
+ ADM8211_RESTORE();
+
+ /* update current channel for adhoc (and maybe AP mode) */
+ reg = ADM8211_CSR_READ(CAP0);
+ reg &= ~0xF;
+ reg |= chan;
+ ADM8211_CSR_WRITE(CAP0, reg);
+
+ return 0;
+}
+
+static void adm8211_update_mode(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+
+ ADM8211_IDLE();
+
+ priv->soft_rx_crc = 0;
+ switch (priv->mode) {
+ case NL80211_IFTYPE_STATION:
+ priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
+ priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ priv->nar &= ~ADM8211_NAR_PR;
+ priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
+
+ /* don't trust the error bits on rev 0x20 and up in adhoc */
+ if (priv->pdev->revision >= ADM8211_REV_BA)
+ priv->soft_rx_crc = 1;
+ break;
+ case NL80211_IFTYPE_MONITOR:
+ priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
+ priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
+ break;
+ }
+
+ ADM8211_RESTORE();
+}
+
+static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+
+ switch (priv->transceiver_type) {
+ case ADM8211_RFMD2958:
+ case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
+ /* comments taken from ADMtek vendor driver */
+
+ /* Reset RF2958 after power on */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
+ /* Initialize RF VCO Core Bias to maximum */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
+ /* Initialize IF PLL */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
+ /* Initialize IF PLL Coarse Tuning */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
+ /* Initialize RF PLL */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
+ /* Initialize RF PLL Coarse Tuning */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
+ /* Initialize TX gain and filter BW (R9) */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x09,
+ (priv->transceiver_type == ADM8211_RFMD2958 ?
+ 0x10050 : 0x00050));
+ /* Initialize CAL register */
+ adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
+ break;
+
+ case ADM8211_MAX2820:
+ adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
+ adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
+ adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
+ adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
+ adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
+ break;
+
+ case ADM8211_AL2210L:
+ adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
+ adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
+ adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
+ adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
+ adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
+ adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
+ adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
+ adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
+ adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
+ adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
+ adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
+ adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
+ break;
+
+ case ADM8211_RFMD2948:
+ default:
+ break;
+ }
+}
+
+static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg;
+
+ /* write addresses */
+ if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
+ ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A);
+ ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
+ ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
+ } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
+ priv->bbp_type == ADM8211_TYPE_ADMTEK) {
+ /* check specific BBP type */
+ switch (priv->specific_bbptype) {
+ case ADM8211_BBP_RFMD3000:
+ case ADM8211_BBP_RFMD3002:
+ ADM8211_CSR_WRITE(MMIWA, 0x00009101);
+ ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
+ break;
+
+ case ADM8211_BBP_ADM8011:
+ ADM8211_CSR_WRITE(MMIWA, 0x00008903);
+ ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
+
+ reg = ADM8211_CSR_READ(BBPCTL);
+ reg &= ~ADM8211_BBPCTL_TYPE;
+ reg |= 0x5 << 18;
+ ADM8211_CSR_WRITE(BBPCTL, reg);
+ break;
+ }
+
+ switch (priv->pdev->revision) {
+ case ADM8211_REV_CA:
+ if (priv->transceiver_type == ADM8211_RFMD2958 ||
+ priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
+ priv->transceiver_type == ADM8211_RFMD2948)
+ ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
+ else if (priv->transceiver_type == ADM8211_MAX2820 ||
+ priv->transceiver_type == ADM8211_AL2210L)
+ ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
+ break;
+
+ case ADM8211_REV_BA:
+ reg = ADM8211_CSR_READ(MMIRD1);
+ reg &= 0x0000FFFF;
+ reg |= 0x7e100000;
+ ADM8211_CSR_WRITE(MMIRD1, reg);
+ break;
+
+ case ADM8211_REV_AB:
+ case ADM8211_REV_AF:
+ default:
+ ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
+ break;
+ }
+
+ /* For RFMD */
+ ADM8211_CSR_WRITE(MACTEST, 0x800);
+ }
+
+ adm8211_hw_init_syn(dev);
+
+ /* Set RF Power control IF pin to PE1+PHYRST# */
+ ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
+ ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
+ ADM8211_CSR_READ(SYNRF);
+ msleep(20);
+
+ /* write BBP regs */
+ if (priv->bbp_type == ADM8211_TYPE_RFMD) {
+ /* RF3000 BBP */
+ /* another set:
+ * 11: c8
+ * 14: 14
+ * 15: 50 (chan 1..13; chan 14: d0)
+ * 1c: 00
+ * 1d: 84
+ */
+ adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
+ /* antenna selection: diversity */
+ adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
+ adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
+ adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
+ adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
+
+ if (priv->eeprom->major_version < 2) {
+ adm8211_write_bbp(dev, 0x1c, 0x00);
+ adm8211_write_bbp(dev, 0x1d, 0x80);
+ } else {
+ if (priv->pdev->revision == ADM8211_REV_BA)
+ adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
+ else
+ adm8211_write_bbp(dev, 0x1c, 0x00);
+
+ adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
+ }
+ } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
+ /* reset baseband */
+ adm8211_write_bbp(dev, 0x00, 0xFF);
+ /* antenna selection: diversity */
+ adm8211_write_bbp(dev, 0x07, 0x0A);
+
+ /* TODO: find documentation for this */
+ switch (priv->transceiver_type) {
+ case ADM8211_RFMD2958:
+ case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
+ adm8211_write_bbp(dev, 0x00, 0x00);
+ adm8211_write_bbp(dev, 0x01, 0x00);
+ adm8211_write_bbp(dev, 0x02, 0x00);
+ adm8211_write_bbp(dev, 0x03, 0x00);
+ adm8211_write_bbp(dev, 0x06, 0x0f);
+ adm8211_write_bbp(dev, 0x09, 0x00);
+ adm8211_write_bbp(dev, 0x0a, 0x00);
+ adm8211_write_bbp(dev, 0x0b, 0x00);
+ adm8211_write_bbp(dev, 0x0c, 0x00);
+ adm8211_write_bbp(dev, 0x0f, 0xAA);
+ adm8211_write_bbp(dev, 0x10, 0x8c);
+ adm8211_write_bbp(dev, 0x11, 0x43);
+ adm8211_write_bbp(dev, 0x18, 0x40);
+ adm8211_write_bbp(dev, 0x20, 0x23);
+ adm8211_write_bbp(dev, 0x21, 0x02);
+ adm8211_write_bbp(dev, 0x22, 0x28);
+ adm8211_write_bbp(dev, 0x23, 0x30);
+ adm8211_write_bbp(dev, 0x24, 0x2d);
+ adm8211_write_bbp(dev, 0x28, 0x35);
+ adm8211_write_bbp(dev, 0x2a, 0x8c);
+ adm8211_write_bbp(dev, 0x2b, 0x81);
+ adm8211_write_bbp(dev, 0x2c, 0x44);
+ adm8211_write_bbp(dev, 0x2d, 0x0A);
+ adm8211_write_bbp(dev, 0x29, 0x40);
+ adm8211_write_bbp(dev, 0x60, 0x08);
+ adm8211_write_bbp(dev, 0x64, 0x01);
+ break;
+
+ case ADM8211_MAX2820:
+ adm8211_write_bbp(dev, 0x00, 0x00);
+ adm8211_write_bbp(dev, 0x01, 0x00);
+ adm8211_write_bbp(dev, 0x02, 0x00);
+ adm8211_write_bbp(dev, 0x03, 0x00);
+ adm8211_write_bbp(dev, 0x06, 0x0f);
+ adm8211_write_bbp(dev, 0x09, 0x05);
+ adm8211_write_bbp(dev, 0x0a, 0x02);
+ adm8211_write_bbp(dev, 0x0b, 0x00);
+ adm8211_write_bbp(dev, 0x0c, 0x0f);
+ adm8211_write_bbp(dev, 0x0f, 0x55);
+ adm8211_write_bbp(dev, 0x10, 0x8d);
+ adm8211_write_bbp(dev, 0x11, 0x43);
+ adm8211_write_bbp(dev, 0x18, 0x4a);
+ adm8211_write_bbp(dev, 0x20, 0x20);
+ adm8211_write_bbp(dev, 0x21, 0x02);
+ adm8211_write_bbp(dev, 0x22, 0x23);
+ adm8211_write_bbp(dev, 0x23, 0x30);
+ adm8211_write_bbp(dev, 0x24, 0x2d);
+ adm8211_write_bbp(dev, 0x2a, 0x8c);
+ adm8211_write_bbp(dev, 0x2b, 0x81);
+ adm8211_write_bbp(dev, 0x2c, 0x44);
+ adm8211_write_bbp(dev, 0x29, 0x4a);
+ adm8211_write_bbp(dev, 0x60, 0x2b);
+ adm8211_write_bbp(dev, 0x64, 0x01);
+ break;
+
+ case ADM8211_AL2210L:
+ adm8211_write_bbp(dev, 0x00, 0x00);
+ adm8211_write_bbp(dev, 0x01, 0x00);
+ adm8211_write_bbp(dev, 0x02, 0x00);
+ adm8211_write_bbp(dev, 0x03, 0x00);
+ adm8211_write_bbp(dev, 0x06, 0x0f);
+ adm8211_write_bbp(dev, 0x07, 0x05);
+ adm8211_write_bbp(dev, 0x08, 0x03);
+ adm8211_write_bbp(dev, 0x09, 0x00);
+ adm8211_write_bbp(dev, 0x0a, 0x00);
+ adm8211_write_bbp(dev, 0x0b, 0x00);
+ adm8211_write_bbp(dev, 0x0c, 0x10);
+ adm8211_write_bbp(dev, 0x0f, 0x55);
+ adm8211_write_bbp(dev, 0x10, 0x8d);
+ adm8211_write_bbp(dev, 0x11, 0x43);
+ adm8211_write_bbp(dev, 0x18, 0x4a);
+ adm8211_write_bbp(dev, 0x20, 0x20);
+ adm8211_write_bbp(dev, 0x21, 0x02);
+ adm8211_write_bbp(dev, 0x22, 0x23);
+ adm8211_write_bbp(dev, 0x23, 0x30);
+ adm8211_write_bbp(dev, 0x24, 0x2d);
+ adm8211_write_bbp(dev, 0x2a, 0xaa);
+ adm8211_write_bbp(dev, 0x2b, 0x81);
+ adm8211_write_bbp(dev, 0x2c, 0x44);
+ adm8211_write_bbp(dev, 0x29, 0xfa);
+ adm8211_write_bbp(dev, 0x60, 0x2d);
+ adm8211_write_bbp(dev, 0x64, 0x01);
+ break;
+
+ case ADM8211_RFMD2948:
+ break;
+
+ default:
+ wiphy_debug(dev->wiphy, "unsupported transceiver %d\n",
+ priv->transceiver_type);
+ break;
+ }
+ } else
+ wiphy_debug(dev->wiphy, "unsupported BBP %d\n", priv->bbp_type);
+
+ ADM8211_CSR_WRITE(SYNRF, 0);
+
+ /* Set RF CAL control source to MAC control */
+ reg = ADM8211_CSR_READ(SYNCTL);
+ reg |= ADM8211_SYNCTL_SELCAL;
+ ADM8211_CSR_WRITE(SYNCTL, reg);
+
+ return 0;
+}
+
+/* configures hw beacons/probe responses */
+static int adm8211_set_rate(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg;
+ int i = 0;
+ u8 rate_buf[12] = {0};
+
+ /* write supported rates */
+ if (priv->pdev->revision != ADM8211_REV_BA) {
+ rate_buf[0] = ARRAY_SIZE(adm8211_rates);
+ for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
+ rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80;
+ } else {
+ /* workaround for rev BA specific bug */
+ rate_buf[0] = 0x04;
+ rate_buf[1] = 0x82;
+ rate_buf[2] = 0x04;
+ rate_buf[3] = 0x0b;
+ rate_buf[4] = 0x16;
+ }
+
+ adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
+ ARRAY_SIZE(adm8211_rates) + 1);
+
+ reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
+ reg |= 1 << 15; /* short preamble */
+ reg |= 110 << 24;
+ ADM8211_CSR_WRITE(PLCPHD, reg);
+
+ /* MTMLT = 512 TU (max TX MSDU lifetime)
+ * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
+ * SRTYLIM = 224 (short retry limit, TX header value is default) */
+ ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
+
+ return 0;
+}
+
+static void adm8211_hw_init(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg;
+ u8 cline;
+
+ reg = ADM8211_CSR_READ(PAR);
+ reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
+ reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
+
+ if (!pci_set_mwi(priv->pdev)) {
+ reg |= 0x1 << 24;
+ pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
+
+ switch (cline) {
+ case 0x8: reg |= (0x1 << 14);
+ break;
+ case 0x16: reg |= (0x2 << 14);
+ break;
+ case 0x32: reg |= (0x3 << 14);
+ break;
+ default: reg |= (0x0 << 14);
+ break;
+ }
+ }
+
+ ADM8211_CSR_WRITE(PAR, reg);
+
+ reg = ADM8211_CSR_READ(CSR_TEST1);
+ reg &= ~(0xF << 28);
+ reg |= (1 << 28) | (1 << 31);
+ ADM8211_CSR_WRITE(CSR_TEST1, reg);
+
+ /* lose link after 4 lost beacons */
+ reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
+ ADM8211_CSR_WRITE(WCSR, reg);
+
+ /* Disable APM, enable receive FIFO threshold, and set drain receive
+ * threshold to store-and-forward */
+ reg = ADM8211_CSR_READ(CMDR);
+ reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
+ reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
+ ADM8211_CSR_WRITE(CMDR, reg);
+
+ adm8211_set_rate(dev);
+
+ /* 4-bit values:
+ * PWR1UP = 8 * 2 ms
+ * PWR0PAPE = 8 us or 5 us
+ * PWR1PAPE = 1 us or 3 us
+ * PWR0TRSW = 5 us
+ * PWR1TRSW = 12 us
+ * PWR0PE2 = 13 us
+ * PWR1PE2 = 1 us
+ * PWR0TXPE = 8 or 6 */
+ if (priv->pdev->revision < ADM8211_REV_CA)
+ ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
+ else
+ ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
+
+ /* Enable store and forward for transmit */
+ priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
+ ADM8211_CSR_WRITE(NAR, priv->nar);
+
+ /* Reset RF */
+ ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
+ ADM8211_CSR_READ(SYNRF);
+ msleep(10);
+ ADM8211_CSR_WRITE(SYNRF, 0);
+ ADM8211_CSR_READ(SYNRF);
+ msleep(5);
+
+ /* Set CFP Max Duration to 0x10 TU */
+ reg = ADM8211_CSR_READ(CFPP);
+ reg &= ~(0xffff << 8);
+ reg |= 0x0010 << 8;
+ ADM8211_CSR_WRITE(CFPP, reg);
+
+ /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
+ * TUCNT = 0x3ff - Tu counter 1024 us */
+ ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
+
+ /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
+ * DIFS=50 us, EIFS=100 us */
+ if (priv->pdev->revision < ADM8211_REV_CA)
+ ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
+ (50 << 9) | 100);
+ else
+ ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
+ (50 << 9) | 100);
+
+ /* PCNT = 1 (MAC idle time awake/sleep, unit S)
+ * RMRD = 2346 * 8 + 1 us (max RX duration) */
+ ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
+
+ /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
+ ADM8211_CSR_WRITE(RSPT, 0xffffff00);
+
+ /* Initialize BBP (and SYN) */
+ adm8211_hw_init_bbp(dev);
+
+ /* make sure interrupts are off */
+ ADM8211_CSR_WRITE(IER, 0);
+
+ /* ACK interrupts */
+ ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
+
+ /* Setup WEP (turns it off for now) */
+ reg = ADM8211_CSR_READ(MACTEST);
+ reg &= ~(7 << 20);
+ ADM8211_CSR_WRITE(MACTEST, reg);
+
+ reg = ADM8211_CSR_READ(WEPCTL);
+ reg &= ~ADM8211_WEPCTL_WEPENABLE;
+ reg |= ADM8211_WEPCTL_WEPRXBYP;
+ ADM8211_CSR_WRITE(WEPCTL, reg);
+
+ /* Clear the missed-packet counter. */
+ ADM8211_CSR_READ(LPC);
+}
+
+static int adm8211_hw_reset(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg, tmp;
+ int timeout = 100;
+
+ /* Power-on issue */
+ /* TODO: check if this is necessary */
+ ADM8211_CSR_WRITE(FRCTL, 0);
+
+ /* Reset the chip */
+ tmp = ADM8211_CSR_READ(PAR);
+ ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
+
+ while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
+ msleep(50);
+
+ if (timeout <= 0)
+ return -ETIMEDOUT;
+
+ ADM8211_CSR_WRITE(PAR, tmp);
+
+ if (priv->pdev->revision == ADM8211_REV_BA &&
+ (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
+ priv->transceiver_type == ADM8211_RFMD2958)) {
+ reg = ADM8211_CSR_READ(CSR_TEST1);
+ reg |= (1 << 4) | (1 << 5);
+ ADM8211_CSR_WRITE(CSR_TEST1, reg);
+ } else if (priv->pdev->revision == ADM8211_REV_CA) {
+ reg = ADM8211_CSR_READ(CSR_TEST1);
+ reg &= ~((1 << 4) | (1 << 5));
+ ADM8211_CSR_WRITE(CSR_TEST1, reg);
+ }
+
+ ADM8211_CSR_WRITE(FRCTL, 0);
+
+ reg = ADM8211_CSR_READ(CSR_TEST0);
+ reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
+ ADM8211_CSR_WRITE(CSR_TEST0, reg);
+
+ adm8211_clear_sram(dev);
+
+ return 0;
+}
+
+static u64 adm8211_get_tsft(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 tsftl;
+ u64 tsft;
+
+ tsftl = ADM8211_CSR_READ(TSFTL);
+ tsft = ADM8211_CSR_READ(TSFTH);
+ tsft <<= 32;
+ tsft |= tsftl;
+
+ return tsft;
+}
+
+static void adm8211_set_interval(struct ieee80211_hw *dev,
+ unsigned short bi, unsigned short li)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg;
+
+ /* BP (beacon interval) = data->beacon_interval
+ * LI (listen interval) = data->listen_interval (in beacon intervals) */
+ reg = (bi << 16) | li;
+ ADM8211_CSR_WRITE(BPLI, reg);
+}
+
+static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
+{
+ struct adm8211_priv *priv = dev->priv;
+ u32 reg;
+
+ ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
+ reg = ADM8211_CSR_READ(ABDA1);
+ reg &= 0x0000ffff;
+ reg |= (bssid[4] << 16) | (bssid[5] << 24);
+ ADM8211_CSR_WRITE(ABDA1, reg);
+}
+
+static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
+{
+ struct adm8211_priv *priv = dev->priv;
+ struct ieee80211_conf *conf = &dev->conf;
+ int channel =
+ ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
+
+ if (channel != priv->channel) {
+ priv->channel = channel;
+ adm8211_rf_set_channel(dev, priv->channel);
+ }
+
+ return 0;
+}
+
+static void adm8211_bss_info_changed(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *conf,
+ u32 changes)
+{
+ struct adm8211_priv *priv = dev->priv;
+
+ if (!(changes & BSS_CHANGED_BSSID))
+ return;
+
+ if (!ether_addr_equal(conf->bssid, priv->bssid)) {
+ adm8211_set_bssid(dev, conf->bssid);
+ memcpy(priv->bssid, conf->bssid, ETH_ALEN);
+ }
+}
+
+static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw,
+ struct netdev_hw_addr_list *mc_list)
+{
+ unsigned int bit_nr;
+ u32 mc_filter[2];
+ struct netdev_hw_addr *ha;
+
+ mc_filter[1] = mc_filter[0] = 0;
+
+ netdev_hw_addr_list_for_each(ha, mc_list) {
+ bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
+
+ bit_nr &= 0x3F;
+ mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
+ }
+
+ return mc_filter[0] | ((u64)(mc_filter[1]) << 32);
+}
+
+static void adm8211_configure_filter(struct ieee80211_hw *dev,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ u64 multicast)
+{
+ static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
+ struct adm8211_priv *priv = dev->priv;
+ unsigned int new_flags;
+ u32 mc_filter[2];
+
+ mc_filter[0] = multicast;
+ mc_filter[1] = multicast >> 32;
+
+ new_flags = 0;
+
+ if (*total_flags & FIF_PROMISC_IN_BSS) {
+ new_flags |= FIF_PROMISC_IN_BSS;
+ priv->nar |= ADM8211_NAR_PR;
+ priv->nar &= ~ADM8211_NAR_MM;
+ mc_filter[1] = mc_filter[0] = ~0;
+ } else if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) {
+ new_flags |= FIF_ALLMULTI;
+ priv->nar &= ~ADM8211_NAR_PR;
+ priv->nar |= ADM8211_NAR_MM;
+ mc_filter[1] = mc_filter[0] = ~0;
+ } else {
+ priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
+ }
+
+ ADM8211_IDLE_RX();
+
+ ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
+ ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
+ ADM8211_CSR_READ(NAR);
+
+ if (priv->nar & ADM8211_NAR_PR)
+ dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
+ else
+ dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
+
+ if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
+ adm8211_set_bssid(dev, bcast);
+ else
+ adm8211_set_bssid(dev, priv->bssid);
+
+ ADM8211_RESTORE();
+
+ *total_flags = new_flags;
+}
+
+static int adm8211_add_interface(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif)
+{
+ struct adm8211_priv *priv = dev->priv;
+ if (priv->mode != NL80211_IFTYPE_MONITOR)
+ return -EOPNOTSUPP;
+
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ priv->mode = vif->type;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ ADM8211_IDLE();
+
+ ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)vif->addr));
+ ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(vif->addr + 4)));
+
+ adm8211_update_mode(dev);
+
+ ADM8211_RESTORE();
+
+ return 0;
+}
+
+static void adm8211_remove_interface(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif)
+{
+ struct adm8211_priv *priv = dev->priv;
+ priv->mode = NL80211_IFTYPE_MONITOR;
+}
+
+static int adm8211_init_rings(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ struct adm8211_desc *desc = NULL;
+ struct adm8211_rx_ring_info *rx_info;
+ struct adm8211_tx_ring_info *tx_info;
+ unsigned int i;
+
+ for (i = 0; i < priv->rx_ring_size; i++) {
+ desc = &priv->rx_ring[i];
+ desc->status = 0;
+ desc->length = cpu_to_le32(RX_PKT_SIZE);
+ priv->rx_buffers[i].skb = NULL;
+ }
+ /* Mark the end of RX ring; hw returns to base address after this
+ * descriptor */
+ desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
+
+ for (i = 0; i < priv->rx_ring_size; i++) {
+ desc = &priv->rx_ring[i];
+ rx_info = &priv->rx_buffers[i];
+
+ rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
+ if (rx_info->skb == NULL)
+ break;
+ rx_info->mapping = pci_map_single(priv->pdev,
+ skb_tail_pointer(rx_info->skb),
+ RX_PKT_SIZE,
+ PCI_DMA_FROMDEVICE);
+ desc->buffer1 = cpu_to_le32(rx_info->mapping);
+ desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
+ }
+
+ /* Setup TX ring. TX buffers descriptors will be filled in as needed */
+ for (i = 0; i < priv->tx_ring_size; i++) {
+ desc = &priv->tx_ring[i];
+ tx_info = &priv->tx_buffers[i];
+
+ tx_info->skb = NULL;
+ tx_info->mapping = 0;
+ desc->status = 0;
+ }
+ desc->length = cpu_to_le32(TDES1_CONTROL_TER);
+
+ priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
+ ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
+ ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
+
+ return 0;
+}
+
+static void adm8211_free_rings(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ unsigned int i;
+
+ for (i = 0; i < priv->rx_ring_size; i++) {
+ if (!priv->rx_buffers[i].skb)
+ continue;
+
+ pci_unmap_single(
+ priv->pdev,
+ priv->rx_buffers[i].mapping,
+ RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
+
+ dev_kfree_skb(priv->rx_buffers[i].skb);
+ }
+
+ for (i = 0; i < priv->tx_ring_size; i++) {
+ if (!priv->tx_buffers[i].skb)
+ continue;
+
+ pci_unmap_single(priv->pdev,
+ priv->tx_buffers[i].mapping,
+ priv->tx_buffers[i].skb->len,
+ PCI_DMA_TODEVICE);
+
+ dev_kfree_skb(priv->tx_buffers[i].skb);
+ }
+}
+
+static int adm8211_start(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ int retval;
+
+ /* Power up MAC and RF chips */
+ retval = adm8211_hw_reset(dev);
+ if (retval) {
+ wiphy_err(dev->wiphy, "hardware reset failed\n");
+ goto fail;
+ }
+
+ retval = adm8211_init_rings(dev);
+ if (retval) {
+ wiphy_err(dev->wiphy, "failed to initialize rings\n");
+ goto fail;
+ }
+
+ /* Init hardware */
+ adm8211_hw_init(dev);
+ adm8211_rf_set_channel(dev, priv->channel);
+
+ retval = request_irq(priv->pdev->irq, adm8211_interrupt,
+ IRQF_SHARED, "adm8211", dev);
+ if (retval) {
+ wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
+ goto fail;
+ }
+
+ ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
+ ADM8211_IER_RCIE | ADM8211_IER_TCIE |
+ ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
+ priv->mode = NL80211_IFTYPE_MONITOR;
+ adm8211_update_mode(dev);
+ ADM8211_CSR_WRITE(RDR, 0);
+
+ adm8211_set_interval(dev, 100, 10);
+ return 0;
+
+fail:
+ return retval;
+}
+
+static void adm8211_stop(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+
+ priv->mode = NL80211_IFTYPE_UNSPECIFIED;
+ priv->nar = 0;
+ ADM8211_CSR_WRITE(NAR, 0);
+ ADM8211_CSR_WRITE(IER, 0);
+ ADM8211_CSR_READ(NAR);
+
+ free_irq(priv->pdev->irq, dev);
+
+ adm8211_free_rings(dev);
+}
+
+static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
+ int plcp_signal, int short_preamble)
+{
+ /* Alternative calculation from NetBSD: */
+
+/* IEEE 802.11b durations for DSSS PHY in microseconds */
+#define IEEE80211_DUR_DS_LONG_PREAMBLE 144
+#define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
+#define IEEE80211_DUR_DS_FAST_PLCPHDR 24
+#define IEEE80211_DUR_DS_SLOW_PLCPHDR 48
+#define IEEE80211_DUR_DS_SLOW_ACK 112
+#define IEEE80211_DUR_DS_FAST_ACK 56
+#define IEEE80211_DUR_DS_SLOW_CTS 112
+#define IEEE80211_DUR_DS_FAST_CTS 56
+#define IEEE80211_DUR_DS_SLOT 20
+#define IEEE80211_DUR_DS_SIFS 10
+
+ int remainder;
+
+ *dur = (80 * (24 + payload_len) + plcp_signal - 1)
+ / plcp_signal;
+
+ if (plcp_signal <= PLCP_SIGNAL_2M)
+ /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
+ *dur += 3 * (IEEE80211_DUR_DS_SIFS +
+ IEEE80211_DUR_DS_SHORT_PREAMBLE +
+ IEEE80211_DUR_DS_FAST_PLCPHDR) +
+ IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
+ else
+ /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
+ *dur += 3 * (IEEE80211_DUR_DS_SIFS +
+ IEEE80211_DUR_DS_SHORT_PREAMBLE +
+ IEEE80211_DUR_DS_FAST_PLCPHDR) +
+ IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
+
+ /* lengthen duration if long preamble */
+ if (!short_preamble)
+ *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
+ IEEE80211_DUR_DS_SHORT_PREAMBLE) +
+ 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
+ IEEE80211_DUR_DS_FAST_PLCPHDR);
+
+
+ *plcp = (80 * len) / plcp_signal;
+ remainder = (80 * len) % plcp_signal;
+ if (plcp_signal == PLCP_SIGNAL_11M &&
+ remainder <= 30 && remainder > 0)
+ *plcp = (*plcp | 0x8000) + 1;
+ else if (remainder)
+ (*plcp)++;
+}
+
+/* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
+static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
+ u16 plcp_signal,
+ size_t hdrlen)
+{
+ struct adm8211_priv *priv = dev->priv;
+ unsigned long flags;
+ dma_addr_t mapping;
+ unsigned int entry;
+ u32 flag;
+
+ mapping = pci_map_single(priv->pdev, skb->data, skb->len,
+ PCI_DMA_TODEVICE);
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
+ flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
+ else
+ flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
+
+ if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
+ ieee80211_stop_queue(dev, 0);
+
+ entry = priv->cur_tx % priv->tx_ring_size;
+
+ priv->tx_buffers[entry].skb = skb;
+ priv->tx_buffers[entry].mapping = mapping;
+ priv->tx_buffers[entry].hdrlen = hdrlen;
+ priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
+
+ if (entry == priv->tx_ring_size - 1)
+ flag |= TDES1_CONTROL_TER;
+ priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
+
+ /* Set TX rate (SIGNAL field in PLCP PPDU format) */
+ flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
+ priv->tx_ring[entry].status = cpu_to_le32(flag);
+
+ priv->cur_tx++;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* Trigger transmit poll */
+ ADM8211_CSR_WRITE(TDR, 0);
+}
+
+/* Put adm8211_tx_hdr on skb and transmit */
+static void adm8211_tx(struct ieee80211_hw *dev,
+ struct ieee80211_tx_control *control,
+ struct sk_buff *skb)
+{
+ struct adm8211_tx_hdr *txhdr;
+ size_t payload_len, hdrlen;
+ int plcp, dur, len, plcp_signal, short_preamble;
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
+ u8 rc_flags;
+
+ rc_flags = info->control.rates[0].flags;
+ short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
+ plcp_signal = txrate->bitrate;
+
+ hdr = (struct ieee80211_hdr *)skb->data;
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ memcpy(skb->cb, skb->data, hdrlen);
+ hdr = (struct ieee80211_hdr *)skb->cb;
+ skb_pull(skb, hdrlen);
+ payload_len = skb->len;
+
+ txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr));
+ memset(txhdr, 0, sizeof(*txhdr));
+ memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
+ txhdr->signal = plcp_signal;
+ txhdr->frame_body_size = cpu_to_le16(payload_len);
+ txhdr->frame_control = hdr->frame_control;
+
+ len = hdrlen + payload_len + FCS_LEN;
+
+ txhdr->frag = cpu_to_le16(0x0FFF);
+ adm8211_calc_durations(&dur, &plcp, payload_len,
+ len, plcp_signal, short_preamble);
+ txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
+ txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
+ txhdr->dur_frag_head = cpu_to_le16(dur);
+ txhdr->dur_frag_tail = cpu_to_le16(dur);
+
+ txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
+
+ if (short_preamble)
+ txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
+
+ if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
+ txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
+
+ txhdr->retry_limit = info->control.rates[0].count;
+
+ adm8211_tx_raw(dev, skb, plcp_signal, hdrlen);
+}
+
+static int adm8211_alloc_rings(struct ieee80211_hw *dev)
+{
+ struct adm8211_priv *priv = dev->priv;
+ unsigned int ring_size;
+
+ priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
+ sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
+ if (!priv->rx_buffers)
+ return -ENOMEM;
+
+ priv->tx_buffers = (void *)priv->rx_buffers +
+ sizeof(*priv->rx_buffers) * priv->rx_ring_size;
+
+ /* Allocate TX/RX descriptors */
+ ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
+ sizeof(struct adm8211_desc) * priv->tx_ring_size;
+ priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size,
+ &priv->rx_ring_dma);
+
+ if (!priv->rx_ring) {
+ kfree(priv->rx_buffers);
+ priv->rx_buffers = NULL;
+ priv->tx_buffers = NULL;
+ return -ENOMEM;
+ }
+
+ priv->tx_ring = priv->rx_ring + priv->rx_ring_size;
+ priv->tx_ring_dma = priv->rx_ring_dma +
+ sizeof(struct adm8211_desc) * priv->rx_ring_size;
+
+ return 0;
+}
+
+static const struct ieee80211_ops adm8211_ops = {
+ .tx = adm8211_tx,
+ .start = adm8211_start,
+ .stop = adm8211_stop,
+ .add_interface = adm8211_add_interface,
+ .remove_interface = adm8211_remove_interface,
+ .config = adm8211_config,
+ .bss_info_changed = adm8211_bss_info_changed,
+ .prepare_multicast = adm8211_prepare_multicast,
+ .configure_filter = adm8211_configure_filter,
+ .get_stats = adm8211_get_stats,
+ .get_tsf = adm8211_get_tsft
+};
+
+static int adm8211_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct ieee80211_hw *dev;
+ struct adm8211_priv *priv;
+ unsigned long mem_addr, mem_len;
+ unsigned int io_addr, io_len;
+ int err;
+ u32 reg;
+ u8 perm_addr[ETH_ALEN];
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\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 (io_len < 256 || mem_len < 1024) {
+ printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
+ pci_name(pdev));
+ goto err_disable_pdev;
+ }
+
+
+ /* check signature */
+ pci_read_config_dword(pdev, 0x80 /* CR32 */, ®);
+ if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
+ printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
+ pci_name(pdev), reg);
+ goto err_disable_pdev;
+ }
+
+ err = pci_request_regions(pdev, "adm8211");
+ if (err) {
+ printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
+ pci_name(pdev));
+ return err; /* someone else grabbed it? don't disable it */
+ }
+
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
+ pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
+ printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
+ pci_name(pdev));
+ goto err_free_reg;
+ }
+
+ pci_set_master(pdev);
+
+ dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
+ if (!dev) {
+ printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
+ pci_name(pdev));
+ err = -ENOMEM;
+ goto err_free_reg;
+ }
+ priv = dev->priv;
+ priv->pdev = pdev;
+
+ spin_lock_init(&priv->lock);
+
+ 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 (adm8211): Cannot map device memory\n",
+ pci_name(pdev));
+ err = -ENOMEM;
+ goto err_free_dev;
+ }
+
+ priv->rx_ring_size = rx_ring_size;
+ priv->tx_ring_size = tx_ring_size;
+
+ if (adm8211_alloc_rings(dev)) {
+ printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
+ pci_name(pdev));
+ goto err_iounmap;
+ }
+
+ *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0));
+ *(__le16 *)&perm_addr[4] =
+ cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF);
+
+ if (!is_valid_ether_addr(perm_addr)) {
+ printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
+ pci_name(pdev));
+ eth_random_addr(perm_addr);
+ }
+ SET_IEEE80211_PERM_ADDR(dev, perm_addr);
+
+ dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
+ /* dev->flags = IEEE80211_HW_RX_INCLUDES_FCS in promisc mode */
+ dev->flags = IEEE80211_HW_SIGNAL_UNSPEC;
+ dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+
+ dev->max_signal = 100; /* FIXME: find better value */
+
+ dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
+
+ priv->retry_limit = 3;
+ priv->ant_power = 0x40;
+ priv->tx_power = 0x40;
+ priv->lpf_cutoff = 0xFF;
+ priv->lnags_threshold = 0xFF;
+ priv->mode = NL80211_IFTYPE_UNSPECIFIED;
+
+ /* Power-on issue. EEPROM won't read correctly without */
+ if (pdev->revision >= ADM8211_REV_BA) {
+ ADM8211_CSR_WRITE(FRCTL, 0);
+ ADM8211_CSR_READ(FRCTL);
+ ADM8211_CSR_WRITE(FRCTL, 1);
+ ADM8211_CSR_READ(FRCTL);
+ msleep(100);
+ }
+
+ err = adm8211_read_eeprom(dev);
+ if (err) {
+ printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
+ pci_name(pdev));
+ goto err_free_desc;
+ }
+
+ priv->channel = 1;
+
+ dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
+
+ err = ieee80211_register_hw(dev);
+ if (err) {
+ printk(KERN_ERR "%s (adm8211): Cannot register device\n",
+ pci_name(pdev));
+ goto err_free_eeprom;
+ }
+
+ wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n",
+ dev->wiphy->perm_addr, pdev->revision);
+
+ return 0;
+
+ err_free_eeprom:
+ kfree(priv->eeprom);
+
+ err_free_desc:
+ pci_free_consistent(pdev,
+ sizeof(struct adm8211_desc) * priv->rx_ring_size +
+ sizeof(struct adm8211_desc) * priv->tx_ring_size,
+ priv->rx_ring, priv->rx_ring_dma);
+ kfree(priv->rx_buffers);
+
+ err_iounmap:
+ pci_iounmap(pdev, priv->map);
+
+ err_free_dev:
+ ieee80211_free_hw(dev);
+
+ err_free_reg:
+ pci_release_regions(pdev);
+
+ err_disable_pdev:
+ pci_disable_device(pdev);
+ return err;
+}
+
+
+static void adm8211_remove(struct pci_dev *pdev)
+{
+ struct ieee80211_hw *dev = pci_get_drvdata(pdev);
+ struct adm8211_priv *priv;
+
+ if (!dev)
+ return;
+
+ ieee80211_unregister_hw(dev);
+
+ priv = dev->priv;
+
+ pci_free_consistent(pdev,
+ sizeof(struct adm8211_desc) * priv->rx_ring_size +
+ sizeof(struct adm8211_desc) * priv->tx_ring_size,
+ priv->rx_ring, priv->rx_ring_dma);
+
+ kfree(priv->rx_buffers);
+ kfree(priv->eeprom);
+ pci_iounmap(pdev, priv->map);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ ieee80211_free_hw(dev);
+}
+
+
+#ifdef CONFIG_PM
+static int adm8211_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 adm8211_resume(struct pci_dev *pdev)
+{
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+
+MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
+
+/* TODO: implement enable_wake */
+static struct pci_driver adm8211_driver = {
+ .name = "adm8211",
+ .id_table = adm8211_pci_id_table,
+ .probe = adm8211_probe,
+ .remove = adm8211_remove,
+#ifdef CONFIG_PM
+ .suspend = adm8211_suspend,
+ .resume = adm8211_resume,
+#endif /* CONFIG_PM */
+};
+
+module_pci_driver(adm8211_driver);
Code Review / kvmfornfv.git / blobdiff