+++ /dev/null
-
-/*
- * Common code for mac80211 Prism54 drivers
- *
- * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
- * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
- *
- * Based on the islsm (softmac prism54) driver, which is:
- * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
- *
- * 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/firmware.h>
-#include <linux/etherdevice.h>
-
-#include <net/mac80211.h>
-
-#include "p54.h"
-#include "p54common.h"
-
-MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
-MODULE_DESCRIPTION("Softmac Prism54 common code");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("prism54common");
-
-void p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
-{
- struct p54_common *priv = dev->priv;
- struct bootrec_exp_if *exp_if;
- struct bootrec *bootrec;
- u32 *data = (u32 *)fw->data;
- u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
- u8 *fw_version = NULL;
- size_t len;
- int i;
-
- if (priv->rx_start)
- return;
-
- while (data < end_data && *data)
- data++;
-
- while (data < end_data && !*data)
- data++;
-
- bootrec = (struct bootrec *) data;
-
- while (bootrec->data <= end_data &&
- (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
- u32 code = le32_to_cpu(bootrec->code);
- switch (code) {
- case BR_CODE_COMPONENT_ID:
- switch (be32_to_cpu(*bootrec->data)) {
- case FW_FMAC:
- printk(KERN_INFO "p54: FreeMAC firmware\n");
- break;
- case FW_LM20:
- printk(KERN_INFO "p54: LM20 firmware\n");
- break;
- case FW_LM86:
- printk(KERN_INFO "p54: LM86 firmware\n");
- break;
- case FW_LM87:
- printk(KERN_INFO "p54: LM87 firmware - not supported yet!\n");
- break;
- default:
- printk(KERN_INFO "p54: unknown firmware\n");
- break;
- }
- break;
- case BR_CODE_COMPONENT_VERSION:
- /* 24 bytes should be enough for all firmwares */
- if (strnlen((unsigned char*)bootrec->data, 24) < 24)
- fw_version = (unsigned char*)bootrec->data;
- break;
- case BR_CODE_DESCR:
- priv->rx_start = le32_to_cpu(bootrec->data[1]);
- /* FIXME add sanity checking */
- priv->rx_end = le32_to_cpu(bootrec->data[2]) - 0x3500;
- break;
- case BR_CODE_EXPOSED_IF:
- exp_if = (struct bootrec_exp_if *) bootrec->data;
- for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
- if (exp_if[i].if_id == 0x1a)
- priv->fw_var = le16_to_cpu(exp_if[i].variant);
- break;
- case BR_CODE_DEPENDENT_IF:
- break;
- case BR_CODE_END_OF_BRA:
- case LEGACY_BR_CODE_END_OF_BRA:
- end_data = NULL;
- break;
- default:
- break;
- }
- bootrec = (struct bootrec *)&bootrec->data[len];
- }
-
- if (fw_version)
- printk(KERN_INFO "p54: FW rev %s - Softmac protocol %x.%x\n",
- fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
-
- if (priv->fw_var >= 0x300) {
- /* Firmware supports QoS, use it! */
- priv->tx_stats.data[0].limit = 3;
- priv->tx_stats.data[1].limit = 4;
- priv->tx_stats.data[2].limit = 3;
- priv->tx_stats.data[3].limit = 1;
- dev->queues = 4;
- }
-}
-EXPORT_SYMBOL_GPL(p54_parse_firmware);
-
-static int p54_convert_rev0_to_rev1(struct ieee80211_hw *dev,
- struct pda_pa_curve_data *curve_data)
-{
- struct p54_common *priv = dev->priv;
- struct pda_pa_curve_data_sample_rev1 *rev1;
- struct pda_pa_curve_data_sample_rev0 *rev0;
- size_t cd_len = sizeof(*curve_data) +
- (curve_data->points_per_channel*sizeof(*rev1) + 2) *
- curve_data->channels;
- unsigned int i, j;
- void *source, *target;
-
- priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
- if (!priv->curve_data)
- return -ENOMEM;
-
- memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
- source = curve_data->data;
- target = priv->curve_data->data;
- for (i = 0; i < curve_data->channels; i++) {
- __le16 *freq = source;
- source += sizeof(__le16);
- *((__le16 *)target) = *freq;
- target += sizeof(__le16);
- for (j = 0; j < curve_data->points_per_channel; j++) {
- rev1 = target;
- rev0 = source;
-
- rev1->rf_power = rev0->rf_power;
- rev1->pa_detector = rev0->pa_detector;
- rev1->data_64qam = rev0->pcv;
- /* "invent" the points for the other modulations */
-#define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
- rev1->data_16qam = SUB(rev0->pcv, 12);
- rev1->data_qpsk = SUB(rev1->data_16qam, 12);
- rev1->data_bpsk = SUB(rev1->data_qpsk, 12);
- rev1->data_barker= SUB(rev1->data_bpsk, 14);
-#undef SUB
- target += sizeof(*rev1);
- source += sizeof(*rev0);
- }
- }
-
- return 0;
-}
-
-int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
-{
- struct p54_common *priv = dev->priv;
- struct eeprom_pda_wrap *wrap = NULL;
- struct pda_entry *entry;
- int i = 0;
- unsigned int data_len, entry_len;
- void *tmp;
- int err;
-
- wrap = (struct eeprom_pda_wrap *) eeprom;
- entry = (void *)wrap->data + wrap->len;
- i += 2;
- i += le16_to_cpu(entry->len)*2;
- while (i < len) {
- entry_len = le16_to_cpu(entry->len);
- data_len = ((entry_len - 1) << 1);
- switch (le16_to_cpu(entry->code)) {
- case PDR_MAC_ADDRESS:
- SET_IEEE80211_PERM_ADDR(dev, entry->data);
- break;
- case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
- if (data_len < 2) {
- err = -EINVAL;
- goto err;
- }
-
- if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
- err = -EINVAL;
- goto err;
- }
-
- priv->output_limit = kmalloc(entry->data[1] *
- sizeof(*priv->output_limit), GFP_KERNEL);
-
- if (!priv->output_limit) {
- err = -ENOMEM;
- goto err;
- }
-
- memcpy(priv->output_limit, &entry->data[2],
- entry->data[1]*sizeof(*priv->output_limit));
- priv->output_limit_len = entry->data[1];
- break;
- case PDR_PRISM_PA_CAL_CURVE_DATA:
- if (data_len < sizeof(struct pda_pa_curve_data)) {
- err = -EINVAL;
- goto err;
- }
-
- if (((struct pda_pa_curve_data *)entry->data)->cal_method_rev) {
- priv->curve_data = kmalloc(data_len, GFP_KERNEL);
- if (!priv->curve_data) {
- err = -ENOMEM;
- goto err;
- }
-
- memcpy(priv->curve_data, entry->data, data_len);
- } else {
- err = p54_convert_rev0_to_rev1(dev, (struct pda_pa_curve_data *)entry->data);
- if (err)
- goto err;
- }
-
- break;
- case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
- priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
- if (!priv->iq_autocal) {
- err = -ENOMEM;
- goto err;
- }
-
- memcpy(priv->iq_autocal, entry->data, data_len);
- priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
- break;
- case PDR_INTERFACE_LIST:
- tmp = entry->data;
- while ((u8 *)tmp < entry->data + data_len) {
- struct bootrec_exp_if *exp_if = tmp;
- if (le16_to_cpu(exp_if->if_id) == 0xF)
- priv->rxhw = exp_if->variant & cpu_to_le16(0x07);
- tmp += sizeof(struct bootrec_exp_if);
- }
- break;
- case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
- priv->version = *(u8 *)(entry->data + 1);
- break;
- case PDR_END:
- i = len;
- break;
- }
-
- entry = (void *)entry + (entry_len + 1)*2;
- i += 2;
- i += entry_len*2;
- }
-
- if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {
- printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
- err = -EINVAL;
- goto err;
- }
-
- return 0;
-
- err:
- if (priv->iq_autocal) {
- kfree(priv->iq_autocal);
- priv->iq_autocal = NULL;
- }
-
- if (priv->output_limit) {
- kfree(priv->output_limit);
- priv->output_limit = NULL;
- }
-
- if (priv->curve_data) {
- kfree(priv->curve_data);
- priv->curve_data = NULL;
- }
-
- printk(KERN_ERR "p54: eeprom parse failed!\n");
- return err;
-}
-EXPORT_SYMBOL_GPL(p54_parse_eeprom);
-
-void p54_fill_eeprom_readback(struct p54_control_hdr *hdr)
-{
- struct p54_eeprom_lm86 *eeprom_hdr;
-
- hdr->magic1 = cpu_to_le16(0x8000);
- hdr->len = cpu_to_le16(sizeof(*eeprom_hdr) + 0x2000);
- hdr->type = cpu_to_le16(P54_CONTROL_TYPE_EEPROM_READBACK);
- hdr->retry1 = hdr->retry2 = 0;
- eeprom_hdr = (struct p54_eeprom_lm86 *) hdr->data;
- eeprom_hdr->offset = 0x0;
- eeprom_hdr->len = cpu_to_le16(0x2000);
-}
-EXPORT_SYMBOL_GPL(p54_fill_eeprom_readback);
-
-static void p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
-{
- struct p54_rx_hdr *hdr = (struct p54_rx_hdr *) skb->data;
- struct ieee80211_rx_status rx_status = {0};
- u16 freq = le16_to_cpu(hdr->freq);
-
- rx_status.ssi = hdr->rssi;
- rx_status.rate = hdr->rate & 0x1f; /* report short preambles & CCK too */
- rx_status.channel = freq == 2484 ? 14 : (freq - 2407)/5;
- rx_status.freq = freq;
- rx_status.phymode = MODE_IEEE80211G;
- rx_status.antenna = hdr->antenna;
- rx_status.mactime = le64_to_cpu(hdr->timestamp);
-
- skb_pull(skb, sizeof(*hdr));
- skb_trim(skb, le16_to_cpu(hdr->len));
-
- ieee80211_rx_irqsafe(dev, skb, &rx_status);
-}
-
-static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
-{
- struct p54_common *priv = dev->priv;
- int i;
-
- /* ieee80211_start_queues is great if all queues are really empty.
- * But, what if some are full? */
-
- for (i = 0; i < dev->queues; i++)
- if (priv->tx_stats.data[i].len < priv->tx_stats.data[i].limit)
- ieee80211_wake_queue(dev, i);
-}
-
-static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
-{
- struct p54_common *priv = dev->priv;
- struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
- struct p54_frame_sent_hdr *payload = (struct p54_frame_sent_hdr *) hdr->data;
- struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
- u32 addr = le32_to_cpu(hdr->req_id) - 0x70;
- struct memrecord *range = NULL;
- u32 freed = 0;
- u32 last_addr = priv->rx_start;
-
- while (entry != (struct sk_buff *)&priv->tx_queue) {
- range = (struct memrecord *)&entry->cb;
- if (range->start_addr == addr) {
- struct ieee80211_tx_status status = {{0}};
- struct p54_control_hdr *entry_hdr;
- struct p54_tx_control_allocdata *entry_data;
- int pad = 0;
-
- if (entry->next != (struct sk_buff *)&priv->tx_queue)
- freed = ((struct memrecord *)&entry->next->cb)->start_addr - last_addr;
- else
- freed = priv->rx_end - last_addr;
-
- last_addr = range->end_addr;
- __skb_unlink(entry, &priv->tx_queue);
- if (!range->control) {
- kfree_skb(entry);
- break;
- }
- memcpy(&status.control, range->control,
- sizeof(status.control));
- kfree(range->control);
- priv->tx_stats.data[status.control.queue].len--;
-
- entry_hdr = (struct p54_control_hdr *) entry->data;
- entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
- if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
- pad = entry_data->align[0];
-
- if (!status.control.flags & IEEE80211_TXCTL_NO_ACK) {
- if (!(payload->status & 0x01))
- status.flags |= IEEE80211_TX_STATUS_ACK;
- else
- status.excessive_retries = 1;
- }
- status.retry_count = payload->retries - 1;
- status.ack_signal = le16_to_cpu(payload->ack_rssi);
- skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
- ieee80211_tx_status_irqsafe(dev, entry, &status);
- break;
- } else
- last_addr = range->end_addr;
- entry = entry->next;
- }
-
- if (freed >= IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
- sizeof(struct p54_control_hdr))
- p54_wake_free_queues(dev);
-}
-
-static void p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
-{
- struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
-
- switch (le16_to_cpu(hdr->type)) {
- case P54_CONTROL_TYPE_TXDONE:
- p54_rx_frame_sent(dev, skb);
- break;
- case P54_CONTROL_TYPE_BBP:
- break;
- default:
- printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
- wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
- break;
- }
-}
-
-/* returns zero if skb can be reused */
-int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
-{
- u8 type = le16_to_cpu(*((__le16 *)skb->data)) >> 8;
- switch (type) {
- case 0x00:
- case 0x01:
- p54_rx_data(dev, skb);
- return -1;
- case 0x4d:
- /* TODO: do something better... but then again, I've never seen this happen */
- printk(KERN_ERR "%s: Received fault. Probably need to restart hardware now..\n",
- wiphy_name(dev->wiphy));
- break;
- case 0x80:
- p54_rx_control(dev, skb);
- break;
- default:
- printk(KERN_ERR "%s: unknown frame RXed (0x%02x)\n",
- wiphy_name(dev->wiphy), type);
- break;
- }
- return 0;
-}
-EXPORT_SYMBOL_GPL(p54_rx);
-
-/*
- * So, the firmware is somewhat stupid and doesn't know what places in its
- * memory incoming data should go to. By poking around in the firmware, we
- * can find some unused memory to upload our packets to. However, data that we
- * want the card to TX needs to stay intact until the card has told us that
- * it is done with it. This function finds empty places we can upload to and
- * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
- * allocated areas.
- */
-static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
- struct p54_control_hdr *data, u32 len,
- struct ieee80211_tx_control *control)
-{
- struct p54_common *priv = dev->priv;
- struct sk_buff *entry = priv->tx_queue.next;
- struct sk_buff *target_skb = NULL;
- struct memrecord *range;
- u32 last_addr = priv->rx_start;
- u32 largest_hole = 0;
- u32 target_addr = priv->rx_start;
- unsigned long flags;
- unsigned int left;
- len = (len + 0x170 + 3) & ~0x3; /* 0x70 headroom, 0x100 tailroom */
-
- spin_lock_irqsave(&priv->tx_queue.lock, flags);
- left = skb_queue_len(&priv->tx_queue);
- while (left--) {
- u32 hole_size;
- range = (struct memrecord *)&entry->cb;
- hole_size = range->start_addr - last_addr;
- if (!target_skb && hole_size >= len) {
- target_skb = entry->prev;
- hole_size -= len;
- target_addr = last_addr;
- }
- largest_hole = max(largest_hole, hole_size);
- last_addr = range->end_addr;
- entry = entry->next;
- }
- if (!target_skb && priv->rx_end - last_addr >= len) {
- target_skb = priv->tx_queue.prev;
- largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
- if (!skb_queue_empty(&priv->tx_queue)) {
- range = (struct memrecord *)&target_skb->cb;
- target_addr = range->end_addr;
- }
- } else
- largest_hole = max(largest_hole, priv->rx_end - last_addr);
-
- if (skb) {
- range = (struct memrecord *)&skb->cb;
- range->start_addr = target_addr;
- range->end_addr = target_addr + len;
- range->control = control;
- __skb_queue_after(&priv->tx_queue, target_skb, skb);
- if (largest_hole < IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
- sizeof(struct p54_control_hdr))
- ieee80211_stop_queues(dev);
- }
- spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
-
- data->req_id = cpu_to_le32(target_addr + 0x70);
-}
-
-static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
- struct ieee80211_tx_control *control)
-{
- struct ieee80211_tx_queue_stats_data *current_queue;
- struct p54_common *priv = dev->priv;
- struct p54_control_hdr *hdr;
- struct p54_tx_control_allocdata *txhdr;
- struct ieee80211_tx_control *control_copy;
- size_t padding, len;
- u8 rate;
-
- current_queue = &priv->tx_stats.data[control->queue];
- if (unlikely(current_queue->len > current_queue->limit))
- return NETDEV_TX_BUSY;
- current_queue->len++;
- current_queue->count++;
- if (current_queue->len == current_queue->limit)
- ieee80211_stop_queue(dev, control->queue);
-
- padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
- len = skb->len;
-
- control_copy = kmalloc(sizeof(*control), GFP_ATOMIC);
- if (control_copy)
- memcpy(control_copy, control, sizeof(*control));
-
- txhdr = (struct p54_tx_control_allocdata *)
- skb_push(skb, sizeof(*txhdr) + padding);
- hdr = (struct p54_control_hdr *) skb_push(skb, sizeof(*hdr));
-
- if (padding)
- hdr->magic1 = cpu_to_le16(0x4010);
- else
- hdr->magic1 = cpu_to_le16(0x0010);
- hdr->len = cpu_to_le16(len);
- hdr->type = (control->flags & IEEE80211_TXCTL_NO_ACK) ? 0 : cpu_to_le16(1);
- hdr->retry1 = hdr->retry2 = control->retry_limit;
- p54_assign_address(dev, skb, hdr, skb->len, control_copy);
-
- memset(txhdr->wep_key, 0x0, 16);
- txhdr->padding = 0;
- txhdr->padding2 = 0;
-
- /* TODO: add support for alternate retry TX rates */
- rate = control->tx_rate;
- if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
- rate |= 0x40;
- else if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
- rate |= 0x20;
- memset(txhdr->rateset, rate, 8);
- txhdr->wep_key_present = 0;
- txhdr->wep_key_len = 0;
- txhdr->frame_type = cpu_to_le32(control->queue + 4);
- txhdr->magic4 = 0;
- txhdr->antenna = (control->antenna_sel_tx == 0) ?
- 2 : control->antenna_sel_tx - 1;
- txhdr->output_power = 0x7f; // HW Maximum
- txhdr->magic5 = (control->flags & IEEE80211_TXCTL_NO_ACK) ?
- 0 : ((rate > 0x3) ? cpu_to_le32(0x33) : cpu_to_le32(0x23));
- if (padding)
- txhdr->align[0] = padding;
-
- priv->tx(dev, hdr, skb->len, 0);
- return 0;
-}
-
-static int p54_set_filter(struct ieee80211_hw *dev, u16 filter_type,
- const u8 *dst, const u8 *src, u8 antenna,
- u32 magic3, u32 magic8, u32 magic9)
-{
- struct p54_common *priv = dev->priv;
- struct p54_control_hdr *hdr;
- struct p54_tx_control_filter *filter;
-
- hdr = kzalloc(sizeof(*hdr) + sizeof(*filter) +
- priv->tx_hdr_len, GFP_KERNEL);
- if (!hdr)
- return -ENOMEM;
-
- hdr = (void *)hdr + priv->tx_hdr_len;
-
- filter = (struct p54_tx_control_filter *) hdr->data;
- hdr->magic1 = cpu_to_le16(0x8001);
- hdr->len = cpu_to_le16(sizeof(*filter));
- p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*filter), NULL);
- hdr->type = cpu_to_le16(P54_CONTROL_TYPE_FILTER_SET);
-
- filter->filter_type = cpu_to_le16(filter_type);
- memcpy(filter->dst, dst, ETH_ALEN);
- if (!src)
- memset(filter->src, ~0, ETH_ALEN);
- else
- memcpy(filter->src, src, ETH_ALEN);
- filter->antenna = antenna;
- filter->magic3 = cpu_to_le32(magic3);
- filter->rx_addr = cpu_to_le32(priv->rx_end);
- filter->max_rx = cpu_to_le16(0x0620); /* FIXME: for usb ver 1.. maybe */
- filter->rxhw = priv->rxhw;
- filter->magic8 = cpu_to_le16(magic8);
- filter->magic9 = cpu_to_le16(magic9);
-
- priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*filter), 1);
- return 0;
-}
-
-static int p54_set_freq(struct ieee80211_hw *dev, __le16 freq)
-{
- struct p54_common *priv = dev->priv;
- struct p54_control_hdr *hdr;
- struct p54_tx_control_channel *chan;
- unsigned int i;
- size_t payload_len = sizeof(*chan) + sizeof(u32)*2 +
- sizeof(*chan->curve_data) *
- priv->curve_data->points_per_channel;
- void *entry;
-
- hdr = kzalloc(sizeof(*hdr) + payload_len +
- priv->tx_hdr_len, GFP_KERNEL);
- if (!hdr)
- return -ENOMEM;
-
- hdr = (void *)hdr + priv->tx_hdr_len;
-
- chan = (struct p54_tx_control_channel *) hdr->data;
-
- hdr->magic1 = cpu_to_le16(0x8001);
- hdr->len = cpu_to_le16(sizeof(*chan));
- hdr->type = cpu_to_le16(P54_CONTROL_TYPE_CHANNEL_CHANGE);
- p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + payload_len, NULL);
-
- chan->magic1 = cpu_to_le16(0x1);
- chan->magic2 = cpu_to_le16(0x0);
-
- for (i = 0; i < priv->iq_autocal_len; i++) {
- if (priv->iq_autocal[i].freq != freq)
- continue;
-
- memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
- sizeof(*priv->iq_autocal));
- break;
- }
- if (i == priv->iq_autocal_len)
- goto err;
-
- for (i = 0; i < priv->output_limit_len; i++) {
- if (priv->output_limit[i].freq != freq)
- continue;
-
- chan->val_barker = 0x38;
- chan->val_bpsk = priv->output_limit[i].val_bpsk;
- chan->val_qpsk = priv->output_limit[i].val_qpsk;
- chan->val_16qam = priv->output_limit[i].val_16qam;
- chan->val_64qam = priv->output_limit[i].val_64qam;
- break;
- }
- if (i == priv->output_limit_len)
- goto err;
-
- chan->pa_points_per_curve = priv->curve_data->points_per_channel;
-
- entry = priv->curve_data->data;
- for (i = 0; i < priv->curve_data->channels; i++) {
- if (*((__le16 *)entry) != freq) {
- entry += sizeof(__le16);
- entry += sizeof(struct pda_pa_curve_data_sample_rev1) *
- chan->pa_points_per_curve;
- continue;
- }
-
- entry += sizeof(__le16);
- memcpy(chan->curve_data, entry, sizeof(*chan->curve_data) *
- chan->pa_points_per_curve);
- break;
- }
-
- memcpy(hdr->data + payload_len - 4, &chan->val_bpsk, 4);
-
- priv->tx(dev, hdr, sizeof(*hdr) + payload_len, 1);
- return 0;
-
- err:
- printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
- kfree(hdr);
- return -EINVAL;
-}
-
-static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
-{
- struct p54_common *priv = dev->priv;
- struct p54_control_hdr *hdr;
- struct p54_tx_control_led *led;
-
- hdr = kzalloc(sizeof(*hdr) + sizeof(*led) +
- priv->tx_hdr_len, GFP_KERNEL);
- if (!hdr)
- return -ENOMEM;
-
- hdr = (void *)hdr + priv->tx_hdr_len;
- hdr->magic1 = cpu_to_le16(0x8001);
- hdr->len = cpu_to_le16(sizeof(*led));
- hdr->type = cpu_to_le16(P54_CONTROL_TYPE_LED);
- p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*led), NULL);
-
- led = (struct p54_tx_control_led *) hdr->data;
- led->mode = cpu_to_le16(mode);
- led->led_permanent = cpu_to_le16(link);
- led->led_temporary = cpu_to_le16(act);
- led->duration = cpu_to_le16(1000);
-
- priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*led), 1);
-
- return 0;
-}
-
-#define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, burst) \
-do { \
- queue.aifs = cpu_to_le16(ai_fs); \
- queue.cwmin = cpu_to_le16(cw_min); \
- queue.cwmax = cpu_to_le16(cw_max); \
- queue.txop = (burst == 0) ? \
- 0 : cpu_to_le16((burst * 100) / 32 + 1); \
-} while(0)
-
-static void p54_init_vdcf(struct ieee80211_hw *dev)
-{
- struct p54_common *priv = dev->priv;
- struct p54_control_hdr *hdr;
- struct p54_tx_control_vdcf *vdcf;
-
- /* all USB V1 adapters need a extra headroom */
- hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
- hdr->magic1 = cpu_to_le16(0x8001);
- hdr->len = cpu_to_le16(sizeof(*vdcf));
- hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
- hdr->req_id = cpu_to_le32(priv->rx_start);
-
- vdcf = (struct p54_tx_control_vdcf *) hdr->data;
-
- P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 0x000f);
- P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 0x001e);
- P54_SET_QUEUE(vdcf->queue[2], 0x0002, 0x000f, 0x03ff, 0x0014);
- P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0x0000);
-}
-
-static void p54_set_vdcf(struct ieee80211_hw *dev)
-{
- struct p54_common *priv = dev->priv;
- struct p54_control_hdr *hdr;
- struct p54_tx_control_vdcf *vdcf;
-
- hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
-
- p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf), NULL);
-
- vdcf = (struct p54_tx_control_vdcf *) hdr->data;
-
- if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
- vdcf->slottime = 9;
- vdcf->magic1 = 0x00;
- vdcf->magic2 = 0x10;
- } else {
- vdcf->slottime = 20;
- vdcf->magic1 = 0x0a;
- vdcf->magic2 = 0x06;
- }
-
- /* (see prism54/isl_oid.h for further details) */
- vdcf->frameburst = cpu_to_le16(0);
-
- priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
-}
-
-static int p54_start(struct ieee80211_hw *dev)
-{
- struct p54_common *priv = dev->priv;
- int err;
-
- err = priv->open(dev);
- if (!err)
- priv->mode = IEEE80211_IF_TYPE_MNTR;
-
- return err;
-}
-
-static void p54_stop(struct ieee80211_hw *dev)
-{
- struct p54_common *priv = dev->priv;
- struct sk_buff *skb;
- while ((skb = skb_dequeue(&priv->tx_queue))) {
- struct memrecord *range = (struct memrecord *)&skb->cb;
- if (range->control)
- kfree(range->control);
- kfree_skb(skb);
- }
- priv->stop(dev);
- priv->mode = IEEE80211_IF_TYPE_INVALID;
-}
-
-static int p54_add_interface(struct ieee80211_hw *dev,
- struct ieee80211_if_init_conf *conf)
-{
- struct p54_common *priv = dev->priv;
-
- if (priv->mode != IEEE80211_IF_TYPE_MNTR)
- return -EOPNOTSUPP;
-
- switch (conf->type) {
- case IEEE80211_IF_TYPE_STA:
- priv->mode = conf->type;
- break;
- default:
- return -EOPNOTSUPP;
- }
-
- memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
-
- p54_set_filter(dev, 0, priv->mac_addr, NULL, 0, 1, 0, 0xF642);
- p54_set_filter(dev, 0, priv->mac_addr, NULL, 1, 0, 0, 0xF642);
-
- switch (conf->type) {
- case IEEE80211_IF_TYPE_STA:
- p54_set_filter(dev, 1, priv->mac_addr, NULL, 0, 0x15F, 0x1F4, 0);
- break;
- default:
- BUG(); /* impossible */
- break;
- }
-
- p54_set_leds(dev, 1, 0, 0);
-
- return 0;
-}
-
-static void p54_remove_interface(struct ieee80211_hw *dev,
- struct ieee80211_if_init_conf *conf)
-{
- struct p54_common *priv = dev->priv;
- priv->mode = IEEE80211_IF_TYPE_MNTR;
- memset(priv->mac_addr, 0, ETH_ALEN);
- p54_set_filter(dev, 0, priv->mac_addr, NULL, 2, 0, 0, 0);
-}
-
-static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
-{
- int ret;
-
- ret = p54_set_freq(dev, cpu_to_le16(conf->freq));
- p54_set_vdcf(dev);
- return ret;
-}
-
-static int p54_config_interface(struct ieee80211_hw *dev, int if_id,
- struct ieee80211_if_conf *conf)
-{
- struct p54_common *priv = dev->priv;
-
- p54_set_filter(dev, 0, priv->mac_addr, conf->bssid, 0, 1, 0, 0xF642);
- p54_set_filter(dev, 0, priv->mac_addr, conf->bssid, 2, 0, 0, 0);
- p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0);
- memcpy(priv->bssid, conf->bssid, ETH_ALEN);
- return 0;
-}
-
-static void p54_configure_filter(struct ieee80211_hw *dev,
- unsigned int changed_flags,
- unsigned int *total_flags,
- int mc_count, struct dev_mc_list *mclist)
-{
- struct p54_common *priv = dev->priv;
-
- *total_flags &= FIF_BCN_PRBRESP_PROMISC;
-
- if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
- if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
- p54_set_filter(dev, 0, priv->mac_addr,
- NULL, 2, 0, 0, 0);
- else
- p54_set_filter(dev, 0, priv->mac_addr,
- priv->bssid, 2, 0, 0, 0);
- }
-}
-
-static int p54_conf_tx(struct ieee80211_hw *dev, int queue,
- const struct ieee80211_tx_queue_params *params)
-{
- struct p54_common *priv = dev->priv;
- struct p54_tx_control_vdcf *vdcf;
-
- vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
- ((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
-
- if ((params) && !((queue < 0) || (queue > 4))) {
- P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
- params->cw_min, params->cw_max, params->burst_time);
- } else
- return -EINVAL;
-
- p54_set_vdcf(dev);
-
- return 0;
-}
-
-static int p54_get_stats(struct ieee80211_hw *dev,
- struct ieee80211_low_level_stats *stats)
-{
- /* TODO */
- return 0;
-}
-
-static int p54_get_tx_stats(struct ieee80211_hw *dev,
- struct ieee80211_tx_queue_stats *stats)
-{
- struct p54_common *priv = dev->priv;
- unsigned int i;
-
- for (i = 0; i < dev->queues; i++)
- memcpy(&stats->data[i], &priv->tx_stats.data[i],
- sizeof(stats->data[i]));
-
- return 0;
-}
-
-static const struct ieee80211_ops p54_ops = {
- .tx = p54_tx,
- .start = p54_start,
- .stop = p54_stop,
- .add_interface = p54_add_interface,
- .remove_interface = p54_remove_interface,
- .config = p54_config,
- .config_interface = p54_config_interface,
- .configure_filter = p54_configure_filter,
- .conf_tx = p54_conf_tx,
- .get_stats = p54_get_stats,
- .get_tx_stats = p54_get_tx_stats
-};
-
-struct ieee80211_hw *p54_init_common(size_t priv_data_len)
-{
- struct ieee80211_hw *dev;
- struct p54_common *priv;
- int i;
-
- dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
- if (!dev)
- return NULL;
-
- priv = dev->priv;
- priv->mode = IEEE80211_IF_TYPE_INVALID;
- skb_queue_head_init(&priv->tx_queue);
- memcpy(priv->channels, p54_channels, sizeof(p54_channels));
- memcpy(priv->rates, p54_rates, sizeof(p54_rates));
- priv->modes[1].mode = MODE_IEEE80211B;
- priv->modes[1].num_rates = 4;
- priv->modes[1].rates = priv->rates;
- priv->modes[1].num_channels = ARRAY_SIZE(p54_channels);
- priv->modes[1].channels = priv->channels;
- priv->modes[0].mode = MODE_IEEE80211G;
- priv->modes[0].num_rates = ARRAY_SIZE(p54_rates);
- priv->modes[0].rates = priv->rates;
- priv->modes[0].num_channels = ARRAY_SIZE(p54_channels);
- priv->modes[0].channels = priv->channels;
- dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */
- IEEE80211_HW_RX_INCLUDES_FCS;
- dev->channel_change_time = 1000; /* TODO: find actual value */
- dev->max_rssi = 127;
-
- priv->tx_stats.data[0].limit = 5;
- dev->queues = 1;
-
- dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
- sizeof(struct p54_tx_control_allocdata);
-
- priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf) +
- priv->tx_hdr_len + sizeof(struct p54_control_hdr), GFP_KERNEL);
-
- if (!priv->cached_vdcf) {
- ieee80211_free_hw(dev);
- return NULL;
- }
-
- p54_init_vdcf(dev);
-
- for (i = 0; i < 2; i++) {
- if (ieee80211_register_hwmode(dev, &priv->modes[i])) {
- kfree(priv->cached_vdcf);
- ieee80211_free_hw(dev);
- return NULL;
- }
- }
-
- return dev;
-}
-EXPORT_SYMBOL_GPL(p54_init_common);
-
-void p54_free_common(struct ieee80211_hw *dev)
-{
- struct p54_common *priv = dev->priv;
- kfree(priv->iq_autocal);
- kfree(priv->output_limit);
- kfree(priv->curve_data);
- kfree(priv->cached_vdcf);
-}
-EXPORT_SYMBOL_GPL(p54_free_common);
-
-static int __init p54_init(void)
-{
- return 0;
-}
-
-static void __exit p54_exit(void)
-{
-}
-
-module_init(p54_init);
-module_exit(p54_exit);
projects / openwrt / openwrt.git / blobdiff