| |
| /* |
| * 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"); |
| |
| static struct ieee80211_rate p54_rates[] = { |
| { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .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 struct ieee80211_channel p54_channels[] = { |
| { .center_freq = 2412, .hw_value = 1, }, |
| { .center_freq = 2417, .hw_value = 2, }, |
| { .center_freq = 2422, .hw_value = 3, }, |
| { .center_freq = 2427, .hw_value = 4, }, |
| { .center_freq = 2432, .hw_value = 5, }, |
| { .center_freq = 2437, .hw_value = 6, }, |
| { .center_freq = 2442, .hw_value = 7, }, |
| { .center_freq = 2447, .hw_value = 8, }, |
| { .center_freq = 2452, .hw_value = 9, }, |
| { .center_freq = 2457, .hw_value = 10, }, |
| { .center_freq = 2462, .hw_value = 11, }, |
| { .center_freq = 2467, .hw_value = 12, }, |
| { .center_freq = 2472, .hw_value = 13, }, |
| { .center_freq = 2484, .hw_value = 14, }, |
| }; |
| |
| static struct ieee80211_supported_band band_2GHz = { |
| .channels = p54_channels, |
| .n_channels = ARRAY_SIZE(p54_channels), |
| .bitrates = p54_rates, |
| .n_bitrates = ARRAY_SIZE(p54_rates), |
| }; |
| |
| |
| 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(*(__be32 *)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(((__le32 *)bootrec->data)[1]); |
| /* FIXME add sanity checking */ |
| priv->rx_end = le32_to_cpu(((__le32 *)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 == cpu_to_le16(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[0].limit = 3; |
| priv->tx_stats[1].limit = 4; |
| priv->tx_stats[2].limit = 3; |
| priv->tx_stats[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; |
| unsigned int data_len, entry_len; |
| void *tmp; |
| int err; |
| u8 *end = (u8 *)eeprom + len; |
| |
| wrap = (struct eeprom_pda_wrap *) eeprom; |
| entry = (void *)wrap->data + le16_to_cpu(wrap->len); |
| |
| /* verify that at least the entry length/code fits */ |
| while ((u8 *)entry <= end - sizeof(*entry)) { |
| entry_len = le16_to_cpu(entry->len); |
| data_len = ((entry_len - 1) << 1); |
| |
| /* abort if entry exceeds whole structure */ |
| if ((u8 *)entry + sizeof(*entry) + data_len > end) |
| break; |
| |
| 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: |
| /* make it overrun */ |
| entry_len = len; |
| break; |
| default: |
| printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n", |
| le16_to_cpu(entry->code)); |
| break; |
| } |
| |
| entry = (void *)entry + (entry_len + 1)*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.signal = hdr->rssi; |
| /* XX correct? */ |
| rx_status.qual = (100 * hdr->rssi) / 127; |
| rx_status.rate_idx = hdr->rate & 0xf; |
| rx_status.freq = freq; |
| rx_status.band = IEEE80211_BAND_2GHZ; |
| rx_status.antenna = hdr->antenna; |
| rx_status.mactime = le64_to_cpu(hdr->timestamp); |
| rx_status.flag |= RX_FLAG_TSFT; |
| |
| 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; |
| |
| for (i = 0; i < dev->queues; i++) |
| if (priv->tx_stats[i].len < priv->tx_stats[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) { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry); |
| range = (void *)info->driver_data; |
| if (range->start_addr == addr) { |
| 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) { |
| struct ieee80211_tx_info *ni; |
| struct memrecord *mr; |
| |
| ni = IEEE80211_SKB_CB(entry->next); |
| mr = (struct memrecord *)ni->driver_data; |
| freed = mr->start_addr - last_addr; |
| } else |
| freed = priv->rx_end - last_addr; |
| |
| last_addr = range->end_addr; |
| __skb_unlink(entry, &priv->tx_queue); |
| memset(&info->status, 0, sizeof(info->status)); |
| priv->tx_stats[skb_get_queue_mapping(skb)].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 (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
| if (!(payload->status & 0x01)) |
| info->flags |= IEEE80211_TX_STAT_ACK; |
| else |
| info->status.excessive_retries = 1; |
| } |
| info->status.retry_count = payload->retries - 1; |
| info->status.ack_signal = le16_to_cpu(payload->ack_rssi); |
| skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data)); |
| ieee80211_tx_status_irqsafe(dev, entry); |
| 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 p54_common *priv = dev->priv; |
| struct sk_buff *entry = priv->tx_queue.next; |
| struct sk_buff *target_skb = NULL; |
| 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; |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry); |
| struct memrecord *range = (void *)info->driver_data; |
| 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)) { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb); |
| struct memrecord *range = (void *)info->driver_data; |
| target_addr = range->end_addr; |
| } |
| } else |
| largest_hole = max(largest_hole, priv->rx_end - last_addr); |
| |
| if (skb) { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| struct memrecord *range = (void *)info->driver_data; |
| range->start_addr = target_addr; |
| range->end_addr = target_addr + len; |
| __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_info *info = IEEE80211_SKB_CB(skb); |
| struct ieee80211_tx_queue_stats *current_queue; |
| struct p54_common *priv = dev->priv; |
| struct p54_control_hdr *hdr; |
| struct p54_tx_control_allocdata *txhdr; |
| size_t padding, len; |
| u8 rate; |
| |
| current_queue = &priv->tx_stats[skb_get_queue_mapping(skb)]; |
| 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, skb_get_queue_mapping(skb)); |
| |
| padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3; |
| len = skb->len; |
| |
| 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 = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1); |
| hdr->retry1 = hdr->retry2 = info->control.retry_limit; |
| |
| memset(txhdr->wep_key, 0x0, 16); |
| txhdr->padding = 0; |
| txhdr->padding2 = 0; |
| |
| /* TODO: add support for alternate retry TX rates */ |
| rate = ieee80211_get_tx_rate(dev, info)->hw_value; |
| if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) |
| rate |= 0x10; |
| if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
| rate |= 0x40; |
| else if (info->flags & IEEE80211_TX_CTL_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(skb_get_queue_mapping(skb) + 4); |
| txhdr->magic4 = 0; |
| txhdr->antenna = (info->antenna_sel_tx == 0) ? |
| 2 : info->antenna_sel_tx - 1; |
| txhdr->output_power = 0x7f; // HW Maximum |
| txhdr->magic5 = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? |
| 0 : ((rate > 0x3) ? cpu_to_le32(0x33) : cpu_to_le32(0x23)); |
| if (padding) |
| txhdr->align[0] = padding; |
| |
| /* modifies skb->cb and with it info, so must be last! */ |
| p54_assign_address(dev, skb, hdr, skb->len); |
| |
| 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_ATOMIC); |
| 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)); |
| 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); |
| |
| 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)); |
| |
| 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, _txop) \ |
| do { \ |
| queue.aifs = cpu_to_le16(ai_fs); \ |
| queue.cwmin = cpu_to_le16(cw_min); \ |
| queue.cwmax = cpu_to_le16(cw_max); \ |
| queue.txop = cpu_to_le16(_txop); \ |
| } 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, 47); |
| P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94); |
| P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0); |
| P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0); |
| } |
| |
| 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)); |
| |
| 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))) |
| 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->channel->center_freq)); |
| p54_set_vdcf(dev); |
| return ret; |
| } |
| |
| static int p54_config_interface(struct ieee80211_hw *dev, |
| struct ieee80211_vif *vif, |
| 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, u16 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 > 4)) { |
| P54_SET_QUEUE(vdcf->queue[queue], params->aifs, |
| params->cw_min, params->cw_max, params->txop); |
| } 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; |
| |
| memcpy(stats, &priv->tx_stats, sizeof(stats[0]) * dev->queues); |
| |
| 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; |
| |
| 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); |
| dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz; |
| dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */ |
| IEEE80211_HW_RX_INCLUDES_FCS | |
| IEEE80211_HW_SIGNAL_UNSPEC; |
| dev->channel_change_time = 1000; /* TODO: find actual value */ |
| dev->max_signal = 127; |
| |
| priv->tx_stats[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); |
| |
| 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); |