| /* |
| * Common code for mac80211 Prism54 drivers |
| * |
| * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> |
| * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de> |
| * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
| * |
| * Based on: |
| * - the islsm (softmac prism54) driver, which is: |
| * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al. |
| * - stlc45xx driver |
| * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). |
| * |
| * 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" |
| |
| static int modparam_nohwcrypt; |
| module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); |
| MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); |
| MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); |
| MODULE_DESCRIPTION("Softmac Prism54 common code"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("prism54common"); |
| |
| static struct ieee80211_rate p54_bgrates[] = { |
| { .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_bgchannels[] = { |
| { .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_bgchannels, |
| .n_channels = ARRAY_SIZE(p54_bgchannels), |
| .bitrates = p54_bgrates, |
| .n_bitrates = ARRAY_SIZE(p54_bgrates), |
| }; |
| |
| static struct ieee80211_rate p54_arates[] = { |
| { .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_achannels[] = { |
| { .center_freq = 4920 }, |
| { .center_freq = 4940 }, |
| { .center_freq = 4960 }, |
| { .center_freq = 4980 }, |
| { .center_freq = 5040 }, |
| { .center_freq = 5060 }, |
| { .center_freq = 5080 }, |
| { .center_freq = 5170 }, |
| { .center_freq = 5180 }, |
| { .center_freq = 5190 }, |
| { .center_freq = 5200 }, |
| { .center_freq = 5210 }, |
| { .center_freq = 5220 }, |
| { .center_freq = 5230 }, |
| { .center_freq = 5240 }, |
| { .center_freq = 5260 }, |
| { .center_freq = 5280 }, |
| { .center_freq = 5300 }, |
| { .center_freq = 5320 }, |
| { .center_freq = 5500 }, |
| { .center_freq = 5520 }, |
| { .center_freq = 5540 }, |
| { .center_freq = 5560 }, |
| { .center_freq = 5580 }, |
| { .center_freq = 5600 }, |
| { .center_freq = 5620 }, |
| { .center_freq = 5640 }, |
| { .center_freq = 5660 }, |
| { .center_freq = 5680 }, |
| { .center_freq = 5700 }, |
| { .center_freq = 5745 }, |
| { .center_freq = 5765 }, |
| { .center_freq = 5785 }, |
| { .center_freq = 5805 }, |
| { .center_freq = 5825 }, |
| }; |
| |
| static struct ieee80211_supported_band band_5GHz = { |
| .channels = p54_achannels, |
| .n_channels = ARRAY_SIZE(p54_achannels), |
| .bitrates = p54_arates, |
| .n_bitrates = ARRAY_SIZE(p54_arates), |
| }; |
| |
| int 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; |
| int maxlen; |
| |
| if (priv->rx_start) |
| return 0; |
| |
| 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: |
| priv->fw_interface = be32_to_cpup((__be32 *) |
| bootrec->data); |
| switch (priv->fw_interface) { |
| case FW_LM86: |
| case FW_LM20: |
| case FW_LM87: { |
| char *iftype = (char *)bootrec->data; |
| printk(KERN_INFO "%s: p54 detected a LM%c%c " |
| "firmware\n", |
| wiphy_name(dev->wiphy), |
| iftype[2], iftype[3]); |
| break; |
| } |
| case FW_FMAC: |
| default: |
| printk(KERN_ERR "%s: unsupported firmware\n", |
| wiphy_name(dev->wiphy)); |
| return -ENODEV; |
| } |
| 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: { |
| struct bootrec_desc *desc = |
| (struct bootrec_desc *)bootrec->data; |
| priv->rx_start = le32_to_cpu(desc->rx_start); |
| /* FIXME add sanity checking */ |
| priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500; |
| priv->headroom = desc->headroom; |
| priv->tailroom = desc->tailroom; |
| priv->privacy_caps = desc->privacy_caps; |
| priv->rx_keycache_size = desc->rx_keycache_size; |
| if (le32_to_cpu(bootrec->len) == 11) |
| priv->rx_mtu = le16_to_cpu(desc->rx_mtu); |
| else |
| priv->rx_mtu = (size_t) |
| 0x620 - priv->tx_hdr_len; |
| maxlen = priv->tx_hdr_len + /* USB devices */ |
| sizeof(struct p54_rx_data) + |
| 4 + /* rx alignment */ |
| IEEE80211_MAX_FRAG_THRESHOLD; |
| if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) { |
| printk(KERN_INFO "p54: rx_mtu reduced from %d " |
| "to %d\n", priv->rx_mtu, |
| maxlen); |
| priv->rx_mtu = maxlen; |
| } |
| 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 "%s: FW rev %s - Softmac protocol %x.%x\n", |
| wiphy_name(dev->wiphy), fw_version, |
| priv->fw_var >> 8, priv->fw_var & 0xff); |
| |
| if (priv->fw_var < 0x500) |
| printk(KERN_INFO "%s: you are using an obsolete firmware. " |
| "visit http://wireless.kernel.org/en/users/Drivers/p54 " |
| "and grab one for \"kernel >= 2.6.28\"!\n", |
| wiphy_name(dev->wiphy)); |
| |
| if (priv->fw_var >= 0x300) { |
| /* Firmware supports QoS, use it! */ |
| priv->tx_stats[P54_QUEUE_AC_VO].limit = 3; |
| priv->tx_stats[P54_QUEUE_AC_VI].limit = 4; |
| priv->tx_stats[P54_QUEUE_AC_BE].limit = 3; |
| priv->tx_stats[P54_QUEUE_AC_BK].limit = 2; |
| dev->queues = P54_QUEUE_AC_NUM; |
| } |
| |
| if (!modparam_nohwcrypt) |
| printk(KERN_INFO "%s: cryptographic accelerator " |
| "WEP:%s, TKIP:%s, CCMP:%s\n", |
| wiphy_name(dev->wiphy), |
| (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" : |
| "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP | |
| BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no", |
| (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ? |
| "YES" : "no"); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(p54_parse_firmware); |
| |
| static int p54_convert_rev0(struct ieee80211_hw *dev, |
| struct pda_pa_curve_data *curve_data) |
| { |
| struct p54_common *priv = dev->priv; |
| struct p54_pa_curve_data_sample *dst; |
| struct pda_pa_curve_data_sample_rev0 *src; |
| size_t cd_len = sizeof(*curve_data) + |
| (curve_data->points_per_channel*sizeof(*dst) + 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++) { |
| dst = target; |
| src = source; |
| |
| dst->rf_power = src->rf_power; |
| dst->pa_detector = src->pa_detector; |
| dst->data_64qam = src->pcv; |
| /* "invent" the points for the other modulations */ |
| #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y) |
| dst->data_16qam = SUB(src->pcv, 12); |
| dst->data_qpsk = SUB(dst->data_16qam, 12); |
| dst->data_bpsk = SUB(dst->data_qpsk, 12); |
| dst->data_barker = SUB(dst->data_bpsk, 14); |
| #undef SUB |
| target += sizeof(*dst); |
| source += sizeof(*src); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int p54_convert_rev1(struct ieee80211_hw *dev, |
| struct pda_pa_curve_data *curve_data) |
| { |
| struct p54_common *priv = dev->priv; |
| struct p54_pa_curve_data_sample *dst; |
| struct pda_pa_curve_data_sample_rev1 *src; |
| size_t cd_len = sizeof(*curve_data) + |
| (curve_data->points_per_channel*sizeof(*dst) + 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++) { |
| memcpy(target, source, sizeof(*src)); |
| |
| target += sizeof(*dst); |
| source += sizeof(*src); |
| } |
| source++; |
| } |
| |
| return 0; |
| } |
| |
| static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2", |
| "Frisbee", "Xbow", "Longbow", "NULL", "NULL" }; |
| static int p54_init_xbow_synth(struct ieee80211_hw *dev); |
| |
| static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len, |
| u16 type) |
| { |
| struct p54_common *priv = dev->priv; |
| int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0; |
| int entry_size = sizeof(struct pda_rssi_cal_entry) + offset; |
| int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2; |
| int i; |
| |
| if (len != (entry_size * num_entries)) { |
| printk(KERN_ERR "%s: unknown rssi calibration data packing " |
| " type:(%x) len:%d.\n", |
| wiphy_name(dev->wiphy), type, len); |
| |
| print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE, |
| data, len); |
| |
| printk(KERN_ERR "%s: please report this issue.\n", |
| wiphy_name(dev->wiphy)); |
| return; |
| } |
| |
| for (i = 0; i < num_entries; i++) { |
| struct pda_rssi_cal_entry *cal = data + |
| (offset + i * entry_size); |
| priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul); |
| priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add); |
| } |
| } |
| |
| static void p54_parse_default_country(struct ieee80211_hw *dev, |
| void *data, int len) |
| { |
| struct pda_country *country; |
| |
| if (len != sizeof(*country)) { |
| printk(KERN_ERR "%s: found possible invalid default country " |
| "eeprom entry. (entry size: %d)\n", |
| wiphy_name(dev->wiphy), len); |
| |
| print_hex_dump_bytes("country:", DUMP_PREFIX_NONE, |
| data, len); |
| |
| printk(KERN_ERR "%s: please report this issue.\n", |
| wiphy_name(dev->wiphy)); |
| return; |
| } |
| |
| country = (struct pda_country *) data; |
| if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO) |
| regulatory_hint(dev->wiphy, country->alpha2); |
| else { |
| /* TODO: |
| * write a shared/common function that converts |
| * "Regulatory domain codes" (802.11-2007 14.8.2.2) |
| * into ISO/IEC 3166-1 alpha2 for regulatory_hint. |
| */ |
| } |
| } |
| |
| static 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; |
| u16 synth = 0; |
| |
| 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: { |
| struct pda_pa_curve_data *curve_data = |
| (struct pda_pa_curve_data *)entry->data; |
| if (data_len < sizeof(*curve_data)) { |
| err = -EINVAL; |
| goto err; |
| } |
| |
| switch (curve_data->cal_method_rev) { |
| case 0: |
| err = p54_convert_rev0(dev, curve_data); |
| break; |
| case 1: |
| err = p54_convert_rev1(dev, curve_data); |
| break; |
| default: |
| printk(KERN_ERR "%s: unknown curve data " |
| "revision %d\n", |
| wiphy_name(dev->wiphy), |
| curve_data->cal_method_rev); |
| err = -ENODEV; |
| break; |
| } |
| 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_DEFAULT_COUNTRY: |
| p54_parse_default_country(dev, entry->data, data_len); |
| 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) |
| synth = le16_to_cpu(exp_if->variant); |
| tmp += sizeof(struct bootrec_exp_if); |
| } |
| break; |
| case PDR_HARDWARE_PLATFORM_COMPONENT_ID: |
| priv->version = *(u8 *)(entry->data + 1); |
| break; |
| case PDR_RSSI_LINEAR_APPROXIMATION: |
| case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND: |
| case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED: |
| p54_parse_rssical(dev, entry->data, data_len, |
| le16_to_cpu(entry->code)); |
| break; |
| case PDR_END: |
| /* make it overrun */ |
| entry_len = len; |
| break; |
| case PDR_MANUFACTURING_PART_NUMBER: |
| case PDR_PDA_VERSION: |
| case PDR_NIC_SERIAL_NUMBER: |
| case PDR_REGULATORY_DOMAIN_LIST: |
| case PDR_TEMPERATURE_TYPE: |
| case PDR_PRISM_PCI_IDENTIFIER: |
| case PDR_COUNTRY_INFORMATION: |
| case PDR_OEM_NAME: |
| case PDR_PRODUCT_NAME: |
| case PDR_UTF8_OEM_NAME: |
| case PDR_UTF8_PRODUCT_NAME: |
| case PDR_COUNTRY_LIST: |
| case PDR_ANTENNA_GAIN: |
| case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA: |
| case PDR_REGULATORY_POWER_LIMITS: |
| case PDR_RADIATED_TRANSMISSION_CORRECTION: |
| case PDR_PRISM_TX_IQ_CALIBRATION: |
| case PDR_BASEBAND_REGISTERS: |
| case PDR_PER_CHANNEL_BASEBAND_REGISTERS: |
| break; |
| default: |
| printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n", |
| wiphy_name(dev->wiphy), |
| le16_to_cpu(entry->code)); |
| break; |
| } |
| |
| entry = (void *)entry + (entry_len + 1)*2; |
| } |
| |
| if (!synth || !priv->iq_autocal || !priv->output_limit || |
| !priv->curve_data) { |
| printk(KERN_ERR "%s: not all required entries found in eeprom!\n", |
| wiphy_name(dev->wiphy)); |
| err = -EINVAL; |
| goto err; |
| } |
| |
| priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK; |
| if (priv->rxhw == 4) |
| p54_init_xbow_synth(dev); |
| if (!(synth & PDR_SYNTH_24_GHZ_DISABLED)) |
| dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz; |
| if (!(synth & PDR_SYNTH_5_GHZ_DISABLED)) |
| dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz; |
| if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED) |
| priv->rx_diversity_mask = 3; |
| if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED) |
| priv->tx_diversity_mask = 3; |
| |
| if (!is_valid_ether_addr(dev->wiphy->perm_addr)) { |
| u8 perm_addr[ETH_ALEN]; |
| |
| printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n", |
| wiphy_name(dev->wiphy)); |
| random_ether_addr(perm_addr); |
| SET_IEEE80211_PERM_ADDR(dev, perm_addr); |
| } |
| |
| printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n", |
| wiphy_name(dev->wiphy), |
| dev->wiphy->perm_addr, |
| priv->version, p54_rf_chips[priv->rxhw]); |
| |
| 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 "%s: eeprom parse failed!\n", |
| wiphy_name(dev->wiphy)); |
| return err; |
| } |
| |
| static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi) |
| { |
| struct p54_common *priv = dev->priv; |
| int band = dev->conf.channel->band; |
| |
| return ((rssi * priv->rssical_db[band].mul) / 64 + |
| priv->rssical_db[band].add) / 4; |
| } |
| |
| static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb) |
| { |
| struct p54_common *priv = dev->priv; |
| struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data; |
| struct ieee80211_rx_status rx_status = {0}; |
| u16 freq = le16_to_cpu(hdr->freq); |
| size_t header_len = sizeof(*hdr); |
| u32 tsf32; |
| u8 rate = hdr->rate & 0xf; |
| |
| /* |
| * If the device is in a unspecified state we have to |
| * ignore all data frames. Else we could end up with a |
| * nasty crash. |
| */ |
| if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED)) |
| return 0; |
| |
| if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) { |
| if (priv->filter_flags & FIF_FCSFAIL) |
| rx_status.flag |= RX_FLAG_FAILED_FCS_CRC; |
| else |
| return 0; |
| } |
| |
| if (hdr->decrypt_status == P54_DECRYPT_OK) |
| rx_status.flag |= RX_FLAG_DECRYPTED; |
| if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) || |
| (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP)) |
| rx_status.flag |= RX_FLAG_MMIC_ERROR; |
| |
| rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi); |
| rx_status.noise = priv->noise; |
| /* XX correct? */ |
| rx_status.qual = (100 * hdr->rssi) / 127; |
| if (hdr->rate & 0x10) |
| rx_status.flag |= RX_FLAG_SHORTPRE; |
| if (dev->conf.channel->band == IEEE80211_BAND_5GHZ) |
| rx_status.rate_idx = (rate < 4) ? 0 : rate - 4; |
| else |
| rx_status.rate_idx = rate; |
| |
| rx_status.freq = freq; |
| rx_status.band = dev->conf.channel->band; |
| rx_status.antenna = hdr->antenna; |
| |
| tsf32 = le32_to_cpu(hdr->tsf32); |
| if (tsf32 < priv->tsf_low32) |
| priv->tsf_high32++; |
| rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32; |
| priv->tsf_low32 = tsf32; |
| |
| rx_status.flag |= RX_FLAG_TSFT; |
| |
| if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN)) |
| header_len += hdr->align[0]; |
| |
| skb_pull(skb, header_len); |
| skb_trim(skb, le16_to_cpu(hdr->len)); |
| |
| ieee80211_rx_irqsafe(dev, skb, &rx_status); |
| |
| queue_delayed_work(dev->workqueue, &priv->work, |
| msecs_to_jiffies(P54_STATISTICS_UPDATE)); |
| |
| return -1; |
| } |
| |
| static void inline p54_wake_free_queues(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| int i; |
| |
| if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) |
| return ; |
| |
| for (i = 0; i < dev->queues; i++) |
| if (priv->tx_stats[i + P54_QUEUE_DATA].len < |
| priv->tx_stats[i + P54_QUEUE_DATA].limit) |
| ieee80211_wake_queue(dev, i); |
| } |
| |
| void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb) |
| { |
| struct p54_common *priv = dev->priv; |
| struct ieee80211_tx_info *info; |
| struct memrecord *range; |
| unsigned long flags; |
| u32 freed = 0, last_addr = priv->rx_start; |
| |
| if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue))) |
| return; |
| |
| /* |
| * don't try to free an already unlinked skb |
| */ |
| if (unlikely((!skb->next) || (!skb->prev))) |
| return; |
| |
| spin_lock_irqsave(&priv->tx_queue.lock, flags); |
| info = IEEE80211_SKB_CB(skb); |
| range = (void *)info->rate_driver_data; |
| if (skb->prev != (struct sk_buff *)&priv->tx_queue) { |
| struct ieee80211_tx_info *ni; |
| struct memrecord *mr; |
| |
| ni = IEEE80211_SKB_CB(skb->prev); |
| mr = (struct memrecord *)ni->rate_driver_data; |
| last_addr = mr->end_addr; |
| } |
| if (skb->next != (struct sk_buff *)&priv->tx_queue) { |
| struct ieee80211_tx_info *ni; |
| struct memrecord *mr; |
| |
| ni = IEEE80211_SKB_CB(skb->next); |
| mr = (struct memrecord *)ni->rate_driver_data; |
| freed = mr->start_addr - last_addr; |
| } else |
| freed = priv->rx_end - last_addr; |
| __skb_unlink(skb, &priv->tx_queue); |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| dev_kfree_skb_any(skb); |
| |
| if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 + |
| IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom) |
| p54_wake_free_queues(dev); |
| } |
| EXPORT_SYMBOL_GPL(p54_free_skb); |
| |
| static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev, |
| __le32 req_id) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *entry = priv->tx_queue.next; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->tx_queue.lock, flags); |
| while (entry != (struct sk_buff *)&priv->tx_queue) { |
| struct p54_hdr *hdr = (struct p54_hdr *) entry->data; |
| |
| if (hdr->req_id == req_id) { |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| return entry; |
| } |
| entry = entry->next; |
| } |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| return NULL; |
| } |
| |
| static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb) |
| { |
| struct p54_common *priv = dev->priv; |
| struct p54_hdr *hdr = (struct p54_hdr *) skb->data; |
| struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data; |
| struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next; |
| u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom; |
| struct memrecord *range = NULL; |
| u32 freed = 0; |
| u32 last_addr = priv->rx_start; |
| unsigned long flags; |
| int count, idx; |
| |
| spin_lock_irqsave(&priv->tx_queue.lock, flags); |
| while (entry != (struct sk_buff *)&priv->tx_queue) { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry); |
| struct p54_hdr *entry_hdr; |
| struct p54_tx_data *entry_data; |
| unsigned int pad = 0, frame_len; |
| |
| range = (void *)info->rate_driver_data; |
| if (range->start_addr != addr) { |
| last_addr = range->end_addr; |
| entry = entry->next; |
| continue; |
| } |
| |
| 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->rate_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); |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| |
| frame_len = entry->len; |
| entry_hdr = (struct p54_hdr *) entry->data; |
| entry_data = (struct p54_tx_data *) entry_hdr->data; |
| priv->tx_stats[entry_data->hw_queue].len--; |
| priv->stats.dot11ACKFailureCount += payload->tries - 1; |
| |
| /* |
| * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are |
| * generated by the driver. Therefore tx_status is bogus |
| * and we don't want to confuse the mac80211 stack. |
| */ |
| if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) { |
| if (entry_data->hw_queue == P54_QUEUE_BEACON) |
| priv->cached_beacon = NULL; |
| |
| kfree_skb(entry); |
| goto out; |
| } |
| |
| /* |
| * Clear manually, ieee80211_tx_info_clear_status would |
| * clear the counts too and we need them. |
| */ |
| memset(&info->status.ampdu_ack_len, 0, |
| sizeof(struct ieee80211_tx_info) - |
| offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); |
| BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, |
| status.ampdu_ack_len) != 23); |
| |
| if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN)) |
| pad = entry_data->align[0]; |
| |
| /* walk through the rates array and adjust the counts */ |
| count = payload->tries; |
| for (idx = 0; idx < 4; idx++) { |
| if (count >= info->status.rates[idx].count) { |
| count -= info->status.rates[idx].count; |
| } else if (count > 0) { |
| info->status.rates[idx].count = count; |
| count = 0; |
| } else { |
| info->status.rates[idx].idx = -1; |
| info->status.rates[idx].count = 0; |
| } |
| } |
| |
| if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && |
| (!payload->status)) |
| info->flags |= IEEE80211_TX_STAT_ACK; |
| if (payload->status & P54_TX_PSM_CANCELLED) |
| info->flags |= IEEE80211_TX_STAT_TX_FILTERED; |
| info->status.ack_signal = p54_rssi_to_dbm(dev, |
| (int)payload->ack_rssi); |
| |
| /* Undo all changes to the frame. */ |
| switch (entry_data->key_type) { |
| case P54_CRYPTO_TKIPMICHAEL: { |
| u8 *iv = (u8 *)(entry_data->align + pad + |
| entry_data->crypt_offset); |
| |
| /* Restore the original TKIP IV. */ |
| iv[2] = iv[0]; |
| iv[0] = iv[1]; |
| iv[1] = (iv[0] | 0x20) & 0x7f; /* WEPSeed - 8.3.2.2 */ |
| |
| frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */ |
| break; |
| } |
| case P54_CRYPTO_AESCCMP: |
| frame_len -= 8; /* remove CCMP_MIC */ |
| break; |
| case P54_CRYPTO_WEP: |
| frame_len -= 4; /* remove WEP_ICV */ |
| break; |
| } |
| skb_trim(entry, frame_len); |
| skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data)); |
| ieee80211_tx_status_irqsafe(dev, entry); |
| goto out; |
| } |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| |
| out: |
| if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 + |
| IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom) |
| p54_wake_free_queues(dev); |
| } |
| |
| static void p54_rx_eeprom_readback(struct ieee80211_hw *dev, |
| struct sk_buff *skb) |
| { |
| struct p54_hdr *hdr = (struct p54_hdr *) skb->data; |
| struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data; |
| struct p54_common *priv = dev->priv; |
| |
| if (!priv->eeprom) |
| return ; |
| |
| if (priv->fw_var >= 0x509) { |
| memcpy(priv->eeprom, eeprom->v2.data, |
| le16_to_cpu(eeprom->v2.len)); |
| } else { |
| memcpy(priv->eeprom, eeprom->v1.data, |
| le16_to_cpu(eeprom->v1.len)); |
| } |
| |
| complete(&priv->eeprom_comp); |
| } |
| |
| static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb) |
| { |
| struct p54_common *priv = dev->priv; |
| struct p54_hdr *hdr = (struct p54_hdr *) skb->data; |
| struct p54_statistics *stats = (struct p54_statistics *) hdr->data; |
| u32 tsf32; |
| |
| if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED)) |
| return ; |
| |
| tsf32 = le32_to_cpu(stats->tsf32); |
| if (tsf32 < priv->tsf_low32) |
| priv->tsf_high32++; |
| priv->tsf_low32 = tsf32; |
| |
| priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail); |
| priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success); |
| priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs); |
| |
| priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise)); |
| |
| p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id)); |
| } |
| |
| static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb) |
| { |
| struct p54_hdr *hdr = (struct p54_hdr *) skb->data; |
| struct p54_trap *trap = (struct p54_trap *) hdr->data; |
| u16 event = le16_to_cpu(trap->event); |
| u16 freq = le16_to_cpu(trap->frequency); |
| |
| switch (event) { |
| case P54_TRAP_BEACON_TX: |
| break; |
| case P54_TRAP_RADAR: |
| printk(KERN_INFO "%s: radar (freq:%d MHz)\n", |
| wiphy_name(dev->wiphy), freq); |
| break; |
| case P54_TRAP_NO_BEACON: |
| break; |
| case P54_TRAP_SCAN: |
| break; |
| case P54_TRAP_TBTT: |
| break; |
| case P54_TRAP_TIMER: |
| break; |
| default: |
| printk(KERN_INFO "%s: received event:%x freq:%d\n", |
| wiphy_name(dev->wiphy), event, freq); |
| break; |
| } |
| } |
| |
| static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb) |
| { |
| struct p54_hdr *hdr = (struct p54_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_TRAP: |
| p54_rx_trap(dev, skb); |
| break; |
| case P54_CONTROL_TYPE_BBP: |
| break; |
| case P54_CONTROL_TYPE_STAT_READBACK: |
| p54_rx_stats(dev, skb); |
| break; |
| case P54_CONTROL_TYPE_EEPROM_READBACK: |
| p54_rx_eeprom_readback(dev, skb); |
| break; |
| default: |
| printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n", |
| wiphy_name(dev->wiphy), le16_to_cpu(hdr->type)); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* returns zero if skb can be reused */ |
| int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb) |
| { |
| u16 type = le16_to_cpu(*((__le16 *)skb->data)); |
| |
| if (type & P54_HDR_FLAG_CONTROL) |
| return p54_rx_control(dev, skb); |
| else |
| return p54_rx_data(dev, skb); |
| } |
| 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 int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb, |
| struct p54_hdr *data, u32 len) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *entry = priv->tx_queue.next; |
| struct sk_buff *target_skb = NULL; |
| struct ieee80211_tx_info *info; |
| 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 + priv->headroom + priv->tailroom + 3) & ~0x3; |
| |
| if (!skb) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&priv->tx_queue.lock, flags); |
| |
| left = skb_queue_len(&priv->tx_queue); |
| if (unlikely(left >= 28)) { |
| /* |
| * The tx_queue is nearly full! |
| * We have throttle normal data traffic, because we must |
| * have a few spare slots for control frames left. |
| */ |
| ieee80211_stop_queues(dev); |
| queue_delayed_work(dev->workqueue, &priv->work, |
| msecs_to_jiffies(P54_TX_TIMEOUT)); |
| |
| if (unlikely(left == 32)) { |
| /* |
| * The tx_queue is now really full. |
| * |
| * TODO: check if the device has crashed and reset it. |
| */ |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| return -ENOSPC; |
| } |
| } |
| |
| while (left--) { |
| u32 hole_size; |
| info = IEEE80211_SKB_CB(entry); |
| range = (void *)info->rate_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)) { |
| info = IEEE80211_SKB_CB(target_skb); |
| range = (void *)info->rate_driver_data; |
| target_addr = range->end_addr; |
| } |
| } else |
| largest_hole = max(largest_hole, priv->rx_end - last_addr); |
| |
| if (!target_skb) { |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| ieee80211_stop_queues(dev); |
| return -ENOSPC; |
| } |
| |
| info = IEEE80211_SKB_CB(skb); |
| range = (void *)info->rate_driver_data; |
| range->start_addr = target_addr; |
| range->end_addr = target_addr + len; |
| __skb_queue_after(&priv->tx_queue, target_skb, skb); |
| spin_unlock_irqrestore(&priv->tx_queue.lock, flags); |
| |
| if (largest_hole < priv->headroom + sizeof(struct p54_hdr) + |
| 48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom) |
| ieee80211_stop_queues(dev); |
| |
| data->req_id = cpu_to_le32(target_addr + priv->headroom); |
| return 0; |
| } |
| |
| static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags, |
| u16 payload_len, u16 type, gfp_t memflags) |
| { |
| struct p54_common *priv = dev->priv; |
| struct p54_hdr *hdr; |
| struct sk_buff *skb; |
| size_t frame_len = sizeof(*hdr) + payload_len; |
| |
| if (frame_len > P54_MAX_CTRL_FRAME_LEN) |
| return NULL; |
| |
| skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags); |
| if (!skb) |
| return NULL; |
| skb_reserve(skb, priv->tx_hdr_len); |
| |
| hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr)); |
| hdr->flags = cpu_to_le16(hdr_flags); |
| hdr->len = cpu_to_le16(payload_len); |
| hdr->type = cpu_to_le16(type); |
| hdr->tries = hdr->rts_tries = 0; |
| |
| if (p54_assign_address(dev, skb, hdr, frame_len)) { |
| kfree_skb(skb); |
| return NULL; |
| } |
| return skb; |
| } |
| |
| int p54_read_eeprom(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| struct p54_eeprom_lm86 *eeprom_hdr; |
| struct sk_buff *skb; |
| size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize; |
| int ret = -ENOMEM; |
| void *eeprom = NULL; |
| |
| maxblocksize = EEPROM_READBACK_LEN; |
| if (priv->fw_var >= 0x509) |
| maxblocksize -= 0xc; |
| else |
| maxblocksize -= 0x4; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) + |
| maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK, |
| GFP_KERNEL); |
| if (!skb) |
| goto free; |
| priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL); |
| if (!priv->eeprom) |
| goto free; |
| eeprom = kzalloc(eeprom_size, GFP_KERNEL); |
| if (!eeprom) |
| goto free; |
| |
| eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb, |
| sizeof(*eeprom_hdr) + maxblocksize); |
| |
| while (eeprom_size) { |
| blocksize = min(eeprom_size, maxblocksize); |
| if (priv->fw_var < 0x509) { |
| eeprom_hdr->v1.offset = cpu_to_le16(offset); |
| eeprom_hdr->v1.len = cpu_to_le16(blocksize); |
| } else { |
| eeprom_hdr->v2.offset = cpu_to_le32(offset); |
| eeprom_hdr->v2.len = cpu_to_le16(blocksize); |
| eeprom_hdr->v2.magic2 = 0xf; |
| memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4); |
| } |
| priv->tx(dev, skb); |
| |
| if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) { |
| printk(KERN_ERR "%s: device does not respond!\n", |
| wiphy_name(dev->wiphy)); |
| ret = -EBUSY; |
| goto free; |
| } |
| |
| memcpy(eeprom + offset, priv->eeprom, blocksize); |
| offset += blocksize; |
| eeprom_size -= blocksize; |
| } |
| |
| ret = p54_parse_eeprom(dev, eeprom, offset); |
| free: |
| kfree(priv->eeprom); |
| priv->eeprom = NULL; |
| p54_free_skb(dev, skb); |
| kfree(eeprom); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(p54_read_eeprom); |
| |
| static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, |
| bool set) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_tim *tim; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim), |
| P54_CONTROL_TYPE_TIM, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| tim = (struct p54_tim *) skb_put(skb, sizeof(*tim)); |
| tim->count = 1; |
| tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid); |
| priv->tx(dev, skb); |
| return 0; |
| } |
| |
| static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_sta_unlock *sta; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta), |
| P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta)); |
| memcpy(sta->addr, addr, ETH_ALEN); |
| priv->tx(dev, skb); |
| return 0; |
| } |
| |
| static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif, |
| enum sta_notify_cmd notify_cmd, |
| struct ieee80211_sta *sta) |
| { |
| switch (notify_cmd) { |
| case STA_NOTIFY_ADD: |
| case STA_NOTIFY_REMOVE: |
| /* |
| * Notify the firmware that we don't want or we don't |
| * need to buffer frames for this station anymore. |
| */ |
| |
| p54_sta_unlock(dev, sta->addr); |
| break; |
| case STA_NOTIFY_AWAKE: |
| /* update the firmware's filter table */ |
| p54_sta_unlock(dev, sta->addr); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_hdr *hdr; |
| struct p54_txcancel *cancel; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel), |
| P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| hdr = (void *)entry->data; |
| cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel)); |
| cancel->req_id = hdr->req_id; |
| priv->tx(dev, skb); |
| return 0; |
| } |
| |
| static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb, |
| struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len, |
| u16 *flags, u16 *aid) |
| { |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
| struct p54_common *priv = dev->priv; |
| int ret = 1; |
| |
| switch (priv->mode) { |
| case NL80211_IFTYPE_MONITOR: |
| /* |
| * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for |
| * every frame in promiscuous/monitor mode. |
| * see STSW45x0C LMAC API - page 12. |
| */ |
| *aid = 0; |
| *flags = P54_HDR_FLAG_DATA_OUT_PROMISC; |
| *queue += P54_QUEUE_DATA; |
| break; |
| case NL80211_IFTYPE_STATION: |
| *aid = 1; |
| if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) { |
| *queue = P54_QUEUE_MGMT; |
| ret = 0; |
| } else |
| *queue += P54_QUEUE_DATA; |
| break; |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_ADHOC: |
| case NL80211_IFTYPE_MESH_POINT: |
| if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) { |
| *aid = 0; |
| *queue = P54_QUEUE_CAB; |
| return 0; |
| } |
| |
| if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) { |
| if (ieee80211_is_probe_resp(hdr->frame_control)) { |
| *aid = 0; |
| *queue = P54_QUEUE_MGMT; |
| *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP | |
| P54_HDR_FLAG_DATA_OUT_NOCANCEL; |
| return 0; |
| } else if (ieee80211_is_beacon(hdr->frame_control)) { |
| *aid = 0; |
| |
| if (info->flags & IEEE80211_TX_CTL_INJECTED) { |
| /* |
| * Injecting beacons on top of a AP is |
| * not a good idea... nevertheless, |
| * it should be doable. |
| */ |
| |
| *queue += P54_QUEUE_DATA; |
| return 1; |
| } |
| |
| *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP; |
| *queue = P54_QUEUE_BEACON; |
| *extra_len = IEEE80211_MAX_TIM_LEN; |
| return 0; |
| } else { |
| *queue = P54_QUEUE_MGMT; |
| ret = 0; |
| } |
| } else |
| *queue += P54_QUEUE_DATA; |
| |
| if (info->control.sta) |
| *aid = info->control.sta->aid; |
| else |
| *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL; |
| break; |
| } |
| return ret; |
| } |
| |
| static u8 p54_convert_algo(enum ieee80211_key_alg alg) |
| { |
| switch (alg) { |
| case ALG_WEP: |
| return P54_CRYPTO_WEP; |
| case ALG_TKIP: |
| return P54_CRYPTO_TKIPMICHAEL; |
| case ALG_CCMP: |
| return P54_CRYPTO_AESCCMP; |
| default: |
| return 0; |
| } |
| } |
| |
| 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_hdr *hdr; |
| struct p54_tx_data *txhdr; |
| size_t padding, len, tim_len = 0; |
| int i, j, ridx, ret; |
| u16 hdr_flags = 0, aid = 0; |
| u8 rate, queue, crypt_offset = 0; |
| u8 cts_rate = 0x20; |
| u8 rc_flags; |
| u8 calculated_tries[4]; |
| u8 nrates = 0, nremaining = 8; |
| |
| queue = skb_get_queue_mapping(skb); |
| |
| ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid); |
| current_queue = &priv->tx_stats[queue]; |
| if (unlikely((current_queue->len > current_queue->limit) && ret)) |
| return NETDEV_TX_BUSY; |
| current_queue->len++; |
| current_queue->count++; |
| if ((current_queue->len == current_queue->limit) && ret) |
| ieee80211_stop_queue(dev, skb_get_queue_mapping(skb)); |
| |
| padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3; |
| len = skb->len; |
| |
| if (info->control.hw_key) { |
| crypt_offset = ieee80211_get_hdrlen_from_skb(skb); |
| if (info->control.hw_key->alg == ALG_TKIP) { |
| u8 *iv = (u8 *)(skb->data + crypt_offset); |
| /* |
| * The firmware excepts that the IV has to have |
| * this special format |
| */ |
| iv[1] = iv[0]; |
| iv[0] = iv[2]; |
| iv[2] = 0; |
| } |
| } |
| |
| txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding); |
| hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr)); |
| |
| if (padding) |
| hdr_flags |= P54_HDR_FLAG_DATA_ALIGN; |
| hdr->type = cpu_to_le16(aid); |
| hdr->rts_tries = info->control.rates[0].count; |
| |
| /* |
| * we register the rates in perfect order, and |
| * RTS/CTS won't happen on 5 GHz |
| */ |
| cts_rate = info->control.rts_cts_rate_idx; |
| |
| memset(&txhdr->rateset, 0, sizeof(txhdr->rateset)); |
| |
| /* see how many rates got used */ |
| for (i = 0; i < 4; i++) { |
| if (info->control.rates[i].idx < 0) |
| break; |
| nrates++; |
| } |
| |
| /* limit tries to 8/nrates per rate */ |
| for (i = 0; i < nrates; i++) { |
| /* |
| * The magic expression here is equivalent to 8/nrates for |
| * all values that matter, but avoids division and jumps. |
| * Note that nrates can only take the values 1 through 4. |
| */ |
| calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1, |
| info->control.rates[i].count); |
| nremaining -= calculated_tries[i]; |
| } |
| |
| /* if there are tries left, distribute from back to front */ |
| for (i = nrates - 1; nremaining > 0 && i >= 0; i--) { |
| int tmp = info->control.rates[i].count - calculated_tries[i]; |
| |
| if (tmp <= 0) |
| continue; |
| /* RC requested more tries at this rate */ |
| |
| tmp = min_t(int, tmp, nremaining); |
| calculated_tries[i] += tmp; |
| nremaining -= tmp; |
| } |
| |
| ridx = 0; |
| for (i = 0; i < nrates && ridx < 8; i++) { |
| /* we register the rates in perfect order */ |
| rate = info->control.rates[i].idx; |
| if (info->band == IEEE80211_BAND_5GHZ) |
| rate += 4; |
| |
| /* store the count we actually calculated for TX status */ |
| info->control.rates[i].count = calculated_tries[i]; |
| |
| rc_flags = info->control.rates[i].flags; |
| if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) { |
| rate |= 0x10; |
| cts_rate |= 0x10; |
| } |
| if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) |
| rate |= 0x40; |
| else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
| rate |= 0x20; |
| for (j = 0; j < calculated_tries[i] && ridx < 8; j++) { |
| txhdr->rateset[ridx] = rate; |
| ridx++; |
| } |
| } |
| |
| if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
| hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR; |
| |
| /* TODO: enable bursting */ |
| hdr->flags = cpu_to_le16(hdr_flags); |
| hdr->tries = ridx; |
| txhdr->rts_rate_idx = 0; |
| if (info->control.hw_key) { |
| txhdr->key_type = p54_convert_algo(info->control.hw_key->alg); |
| txhdr->key_len = min((u8)16, info->control.hw_key->keylen); |
| memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len); |
| if (info->control.hw_key->alg == ALG_TKIP) { |
| if (unlikely(skb_tailroom(skb) < 12)) |
| goto err; |
| /* reserve space for the MIC key */ |
| len += 8; |
| memcpy(skb_put(skb, 8), &(info->control.hw_key->key |
| [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8); |
| } |
| /* reserve some space for ICV */ |
| len += info->control.hw_key->icv_len; |
| memset(skb_put(skb, info->control.hw_key->icv_len), 0, |
| info->control.hw_key->icv_len); |
| } else { |
| txhdr->key_type = 0; |
| txhdr->key_len = 0; |
| } |
| txhdr->crypt_offset = crypt_offset; |
| txhdr->hw_queue = queue; |
| txhdr->backlog = current_queue->len; |
| memset(txhdr->durations, 0, sizeof(txhdr->durations)); |
| txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ? |
| 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask; |
| txhdr->output_power = priv->output_power; |
| txhdr->cts_rate = cts_rate; |
| if (padding) |
| txhdr->align[0] = padding; |
| |
| hdr->len = cpu_to_le16(len); |
| /* modifies skb->cb and with it info, so must be last! */ |
| if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len))) |
| goto err; |
| priv->tx(dev, skb); |
| |
| queue_delayed_work(dev->workqueue, &priv->work, |
| msecs_to_jiffies(P54_TX_FRAME_LIFETIME)); |
| |
| return NETDEV_TX_OK; |
| |
| err: |
| skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding); |
| current_queue->len--; |
| current_queue->count--; |
| return NETDEV_TX_BUSY; |
| } |
| |
| static int p54_setup_mac(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_setup_mac *setup; |
| u16 mode; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup), |
| P54_CONTROL_TYPE_SETUP, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup)); |
| if (dev->conf.radio_enabled) { |
| switch (priv->mode) { |
| case NL80211_IFTYPE_STATION: |
| mode = P54_FILTER_TYPE_STATION; |
| break; |
| case NL80211_IFTYPE_AP: |
| mode = P54_FILTER_TYPE_AP; |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| case NL80211_IFTYPE_MESH_POINT: |
| mode = P54_FILTER_TYPE_IBSS; |
| break; |
| case NL80211_IFTYPE_MONITOR: |
| mode = P54_FILTER_TYPE_PROMISCUOUS; |
| break; |
| default: |
| mode = P54_FILTER_TYPE_NONE; |
| break; |
| } |
| |
| /* |
| * "TRANSPARENT and PROMISCUOUS are mutually exclusive" |
| * STSW45X0C LMAC API - page 12 |
| */ |
| if (((priv->filter_flags & FIF_PROMISC_IN_BSS) || |
| (priv->filter_flags & FIF_OTHER_BSS)) && |
| (mode != P54_FILTER_TYPE_PROMISCUOUS)) |
| mode |= P54_FILTER_TYPE_TRANSPARENT; |
| } else |
| mode = P54_FILTER_TYPE_RX_DISABLED; |
| |
| setup->mac_mode = cpu_to_le16(mode); |
| memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN); |
| memcpy(setup->bssid, priv->bssid, ETH_ALEN); |
| setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */ |
| setup->rx_align = 0; |
| if (priv->fw_var < 0x500) { |
| setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask); |
| memset(setup->v1.rts_rates, 0, 8); |
| setup->v1.rx_addr = cpu_to_le32(priv->rx_end); |
| setup->v1.max_rx = cpu_to_le16(priv->rx_mtu); |
| setup->v1.rxhw = cpu_to_le16(priv->rxhw); |
| setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer); |
| setup->v1.unalloc0 = cpu_to_le16(0); |
| } else { |
| setup->v2.rx_addr = cpu_to_le32(priv->rx_end); |
| setup->v2.max_rx = cpu_to_le16(priv->rx_mtu); |
| setup->v2.rxhw = cpu_to_le16(priv->rxhw); |
| setup->v2.timer = cpu_to_le16(priv->wakeup_timer); |
| setup->v2.truncate = cpu_to_le16(48896); |
| setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask); |
| setup->v2.sbss_offset = 0; |
| setup->v2.mcast_window = 0; |
| setup->v2.rx_rssi_threshold = 0; |
| setup->v2.rx_ed_threshold = 0; |
| setup->v2.ref_clock = cpu_to_le32(644245094); |
| setup->v2.lpf_bandwidth = cpu_to_le16(65535); |
| setup->v2.osc_start_delay = cpu_to_le16(65535); |
| } |
| priv->tx(dev, skb); |
| return 0; |
| } |
| |
| static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_scan *chan; |
| unsigned int i; |
| void *entry; |
| __le16 freq = cpu_to_le16(dev->conf.channel->center_freq); |
| int band = dev->conf.channel->band; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan), |
| P54_CONTROL_TYPE_SCAN, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| chan = (struct p54_scan *) skb_put(skb, sizeof(*chan)); |
| memset(chan->padding1, 0, sizeof(chan->padding1)); |
| chan->mode = cpu_to_le16(mode); |
| chan->dwell = cpu_to_le16(dwell); |
| |
| 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 = chan->dup_bpsk = |
| priv->output_limit[i].val_bpsk; |
| chan->val_qpsk = chan->dup_qpsk = |
| priv->output_limit[i].val_qpsk; |
| chan->val_16qam = chan->dup_16qam = |
| priv->output_limit[i].val_16qam; |
| chan->val_64qam = chan->dup_64qam = |
| priv->output_limit[i].val_64qam; |
| break; |
| } |
| if (i == priv->output_limit_len) |
| goto err; |
| |
| entry = priv->curve_data->data; |
| for (i = 0; i < priv->curve_data->channels; i++) { |
| if (*((__le16 *)entry) != freq) { |
| entry += sizeof(__le16); |
| entry += sizeof(struct p54_pa_curve_data_sample) * |
| priv->curve_data->points_per_channel; |
| continue; |
| } |
| |
| entry += sizeof(__le16); |
| chan->pa_points_per_curve = 8; |
| memset(chan->curve_data, 0, sizeof(*chan->curve_data)); |
| memcpy(chan->curve_data, entry, |
| sizeof(struct p54_pa_curve_data_sample) * |
| min((u8)8, priv->curve_data->points_per_channel)); |
| break; |
| } |
| |
| if (priv->fw_var < 0x500) { |
| chan->v1_rssi.mul = cpu_to_le16(priv->rssical_db[band].mul); |
| chan->v1_rssi.add = cpu_to_le16(priv->rssical_db[band].add); |
| } else { |
| chan->v2.rssi.mul = cpu_to_le16(priv->rssical_db[band].mul); |
| chan->v2.rssi.add = cpu_to_le16(priv->rssical_db[band].add); |
| chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask); |
| memset(chan->v2.rts_rates, 0, 8); |
| } |
| priv->tx(dev, skb); |
| return 0; |
| |
| err: |
| printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy)); |
| p54_free_skb(dev, skb); |
| return -EINVAL; |
| } |
| |
| static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_led *led; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led), |
| P54_CONTROL_TYPE_LED, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| led = (struct p54_led *)skb_put(skb, sizeof(*led)); |
| 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, skb); |
| 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 int p54_set_edcf(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_edcf *edcf; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf), |
| P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf)); |
| if (priv->use_short_slot) { |
| edcf->slottime = 9; |
| edcf->sifs = 0x10; |
| edcf->eofpad = 0x00; |
| } else { |
| edcf->slottime = 20; |
| edcf->sifs = 0x0a; |
| edcf->eofpad = 0x06; |
| } |
| /* (see prism54/isl_oid.h for further details) */ |
| edcf->frameburst = cpu_to_le16(0); |
| edcf->round_trip_delay = cpu_to_le16(0); |
| edcf->flags = 0; |
| memset(edcf->mapping, 0, sizeof(edcf->mapping)); |
| memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue)); |
| priv->tx(dev, skb); |
| return 0; |
| } |
| |
| static int p54_set_ps(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_psm *psm; |
| u16 mode; |
| int i; |
| |
| if (dev->conf.flags & IEEE80211_CONF_PS) |
| mode = P54_PSM | P54_PSM_DTIM | P54_PSM_MCBC; |
| else |
| mode = P54_PSM_CAM; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm), |
| P54_CONTROL_TYPE_PSM, GFP_ATOMIC); |
| if (!skb) |
| return -ENOMEM; |
| |
| psm = (struct p54_psm *)skb_put(skb, sizeof(*psm)); |
| psm->mode = cpu_to_le16(mode); |
| psm->aid = cpu_to_le16(priv->aid); |
| for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) { |
| psm->intervals[i].interval = |
| cpu_to_le16(dev->conf.listen_interval); |
| psm->intervals[i].periods = cpu_to_le16(1); |
| } |
| |
| psm->beacon_rssi_skip_max = 60; |
| psm->rssi_delta_threshold = 0; |
| psm->nr = 0; |
| |
| priv->tx(dev, skb); |
| |
| return 0; |
| } |
| |
| static int p54_beacon_tim(struct sk_buff *skb) |
| { |
| /* |
| * the good excuse for this mess is ... the firmware. |
| * The dummy TIM MUST be at the end of the beacon frame, |
| * because it'll be overwritten! |
| */ |
| |
| struct ieee80211_mgmt *mgmt = (void *)skb->data; |
| u8 *pos, *end; |
| |
| if (skb->len <= sizeof(mgmt)) |
| return -EINVAL; |
| |
| pos = (u8 *)mgmt->u.beacon.variable; |
| end = skb->data + skb->len; |
| while (pos < end) { |
| if (pos + 2 + pos[1] > end) |
| return -EINVAL; |
| |
| if (pos[0] == WLAN_EID_TIM) { |
| u8 dtim_len = pos[1]; |
| u8 dtim_period = pos[3]; |
| u8 *next = pos + 2 + dtim_len; |
| |
| if (dtim_len < 3) |
| return -EINVAL; |
| |
| memmove(pos, next, end - next); |
| |
| if (dtim_len > 3) |
| skb_trim(skb, skb->len - (dtim_len - 3)); |
| |
| pos = end - (dtim_len + 2); |
| |
| /* add the dummy at the end */ |
| pos[0] = WLAN_EID_TIM; |
| pos[1] = 3; |
| pos[2] = 0; |
| pos[3] = dtim_period; |
| pos[4] = 0; |
| return 0; |
| } |
| pos += 2 + pos[1]; |
| } |
| return 0; |
| } |
| |
| static int p54_beacon_update(struct ieee80211_hw *dev, |
| struct ieee80211_vif *vif) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *beacon; |
| int ret; |
| |
| if (priv->cached_beacon) { |
| p54_tx_cancel(dev, priv->cached_beacon); |
| /* wait for the last beacon the be freed */ |
| msleep(10); |
| } |
| |
| beacon = ieee80211_beacon_get(dev, vif); |
| if (!beacon) |
| return -ENOMEM; |
| ret = p54_beacon_tim(beacon); |
| if (ret) |
| return ret; |
| ret = p54_tx(dev, beacon); |
| if (ret) |
| return ret; |
| priv->cached_beacon = beacon; |
| priv->tsf_high32 = 0; |
| priv->tsf_low32 = 0; |
| |
| return 0; |
| } |
| |
| static int p54_start(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| int err; |
| |
| mutex_lock(&priv->conf_mutex); |
| err = priv->open(dev); |
| if (err) |
| goto out; |
| P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47); |
| P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94); |
| P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0); |
| P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0); |
| err = p54_set_edcf(dev); |
| if (err) |
| goto out; |
| |
| memset(priv->bssid, ~0, ETH_ALEN); |
| priv->mode = NL80211_IFTYPE_MONITOR; |
| err = p54_setup_mac(dev); |
| if (err) { |
| priv->mode = NL80211_IFTYPE_UNSPECIFIED; |
| goto out; |
| } |
| |
| queue_delayed_work(dev->workqueue, &priv->work, 0); |
| |
| out: |
| mutex_unlock(&priv->conf_mutex); |
| return err; |
| } |
| |
| static void p54_stop(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| |
| mutex_lock(&priv->conf_mutex); |
| priv->mode = NL80211_IFTYPE_UNSPECIFIED; |
| cancel_delayed_work_sync(&priv->work); |
| if (priv->cached_beacon) |
| p54_tx_cancel(dev, priv->cached_beacon); |
| |
| priv->stop(dev); |
| while ((skb = skb_dequeue(&priv->tx_queue))) |
| kfree_skb(skb); |
| priv->cached_beacon = NULL; |
| priv->tsf_high32 = priv->tsf_low32 = 0; |
| mutex_unlock(&priv->conf_mutex); |
| } |
| |
| static int p54_add_interface(struct ieee80211_hw *dev, |
| struct ieee80211_if_init_conf *conf) |
| { |
| struct p54_common *priv = dev->priv; |
| |
| mutex_lock(&priv->conf_mutex); |
| if (priv->mode != NL80211_IFTYPE_MONITOR) { |
| mutex_unlock(&priv->conf_mutex); |
| return -EOPNOTSUPP; |
| } |
| |
| switch (conf->type) { |
| case NL80211_IFTYPE_STATION: |
| case NL80211_IFTYPE_ADHOC: |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_MESH_POINT: |
| priv->mode = conf->type; |
| break; |
| default: |
| mutex_unlock(&priv->conf_mutex); |
| return -EOPNOTSUPP; |
| } |
| |
| memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN); |
| p54_setup_mac(dev); |
| p54_set_leds(dev, 1, 0, 0); |
| mutex_unlock(&priv->conf_mutex); |
| return 0; |
| } |
| |
| static void p54_remove_interface(struct ieee80211_hw *dev, |
| struct ieee80211_if_init_conf *conf) |
| { |
| struct p54_common *priv = dev->priv; |
| |
| mutex_lock(&priv->conf_mutex); |
| if (priv->cached_beacon) |
| p54_tx_cancel(dev, priv->cached_beacon); |
| priv->mode = NL80211_IFTYPE_MONITOR; |
| memset(priv->mac_addr, 0, ETH_ALEN); |
| memset(priv->bssid, 0, ETH_ALEN); |
| p54_setup_mac(dev); |
| mutex_unlock(&priv->conf_mutex); |
| } |
| |
| static int p54_config(struct ieee80211_hw *dev, u32 changed) |
| { |
| int ret = 0; |
| struct p54_common *priv = dev->priv; |
| struct ieee80211_conf *conf = &dev->conf; |
| |
| mutex_lock(&priv->conf_mutex); |
| if (changed & IEEE80211_CONF_CHANGE_POWER) |
| priv->output_power = conf->power_level << 2; |
| if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) { |
| ret = p54_setup_mac(dev); |
| if (ret) |
| goto out; |
| } |
| if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { |
| ret = p54_scan(dev, P54_SCAN_EXIT, 0); |
| if (ret) |
| goto out; |
| } |
| if (changed & IEEE80211_CONF_CHANGE_PS) { |
| ret = p54_set_ps(dev); |
| if (ret) |
| goto out; |
| } |
| |
| out: |
| mutex_unlock(&priv->conf_mutex); |
| 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; |
| int ret = 0; |
| |
| mutex_lock(&priv->conf_mutex); |
| if (conf->changed & IEEE80211_IFCC_BSSID) { |
| memcpy(priv->bssid, conf->bssid, ETH_ALEN); |
| ret = p54_setup_mac(dev); |
| if (ret) |
| goto out; |
| } |
| |
| if (conf->changed & IEEE80211_IFCC_BEACON) { |
| ret = p54_scan(dev, P54_SCAN_EXIT, 0); |
| if (ret) |
| goto out; |
| ret = p54_setup_mac(dev); |
| if (ret) |
| goto out; |
| ret = p54_beacon_update(dev, vif); |
| if (ret) |
| goto out; |
| ret = p54_set_edcf(dev); |
| if (ret) |
| goto out; |
| } |
| |
| ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0); |
| |
| out: |
| mutex_unlock(&priv->conf_mutex); |
| return ret; |
| } |
| |
| 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_PROMISC_IN_BSS | |
| FIF_OTHER_BSS | |
| (*total_flags & FIF_PROMISC_IN_BSS) ? |
| FIF_FCSFAIL : 0; |
| |
| priv->filter_flags = *total_flags; |
| |
| if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) |
| p54_setup_mac(dev); |
| } |
| |
| static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| struct p54_common *priv = dev->priv; |
| int ret; |
| |
| mutex_lock(&priv->conf_mutex); |
| if ((params) && !(queue > 4)) { |
| P54_SET_QUEUE(priv->qos_params[queue], params->aifs, |
| params->cw_min, params->cw_max, params->txop); |
| ret = p54_set_edcf(dev); |
| } else |
| ret = -EINVAL; |
| mutex_unlock(&priv->conf_mutex); |
| return ret; |
| } |
| |
| static int p54_init_xbow_synth(struct ieee80211_hw *dev) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_xbow_synth *xbow; |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow), |
| P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL); |
| if (!skb) |
| return -ENOMEM; |
| |
| xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow)); |
| xbow->magic1 = cpu_to_le16(0x1); |
| xbow->magic2 = cpu_to_le16(0x2); |
| xbow->freq = cpu_to_le16(5390); |
| memset(xbow->padding, 0, sizeof(xbow->padding)); |
| priv->tx(dev, skb); |
| return 0; |
| } |
| |
| static void p54_work(struct work_struct *work) |
| { |
| struct p54_common *priv = container_of(work, struct p54_common, |
| work.work); |
| struct ieee80211_hw *dev = priv->hw; |
| struct sk_buff *skb; |
| |
| if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED)) |
| return ; |
| |
| /* |
| * TODO: walk through tx_queue and do the following tasks |
| * 1. initiate bursts. |
| * 2. cancel stuck frames / reset the device if necessary. |
| */ |
| |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, |
| sizeof(struct p54_statistics), |
| P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL); |
| if (!skb) |
| return ; |
| |
| priv->tx(dev, skb); |
| } |
| |
| static int p54_get_stats(struct ieee80211_hw *dev, |
| struct ieee80211_low_level_stats *stats) |
| { |
| struct p54_common *priv = dev->priv; |
| |
| memcpy(stats, &priv->stats, sizeof(*stats)); |
| 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[P54_QUEUE_DATA], |
| sizeof(stats[0]) * dev->queues); |
| return 0; |
| } |
| |
| static void p54_bss_info_changed(struct ieee80211_hw *dev, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *info, |
| u32 changed) |
| { |
| struct p54_common *priv = dev->priv; |
| |
| if (changed & BSS_CHANGED_ERP_SLOT) { |
| priv->use_short_slot = info->use_short_slot; |
| p54_set_edcf(dev); |
| } |
| if (changed & BSS_CHANGED_BASIC_RATES) { |
| if (dev->conf.channel->band == IEEE80211_BAND_5GHZ) |
| priv->basic_rate_mask = (info->basic_rates << 4); |
| else |
| priv->basic_rate_mask = info->basic_rates; |
| p54_setup_mac(dev); |
| if (priv->fw_var >= 0x500) |
| p54_scan(dev, P54_SCAN_EXIT, 0); |
| } |
| if (changed & BSS_CHANGED_ASSOC) { |
| if (info->assoc) { |
| priv->aid = info->aid; |
| priv->wakeup_timer = info->beacon_int * |
| info->dtim_period * 5; |
| p54_setup_mac(dev); |
| } |
| } |
| |
| } |
| |
| static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd, |
| struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
| struct ieee80211_key_conf *key) |
| { |
| struct p54_common *priv = dev->priv; |
| struct sk_buff *skb; |
| struct p54_keycache *rxkey; |
| u8 algo = 0; |
| |
| if (modparam_nohwcrypt) |
| return -EOPNOTSUPP; |
| |
| if (cmd == DISABLE_KEY) |
| algo = 0; |
| else { |
| switch (key->alg) { |
| case ALG_TKIP: |
| if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL | |
| BR_DESC_PRIV_CAP_TKIP))) |
| return -EOPNOTSUPP; |
| key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| algo = P54_CRYPTO_TKIPMICHAEL; |
| break; |
| case ALG_WEP: |
| if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) |
| return -EOPNOTSUPP; |
| key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| algo = P54_CRYPTO_WEP; |
| break; |
| case ALG_CCMP: |
| if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) |
| return -EOPNOTSUPP; |
| key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| algo = P54_CRYPTO_AESCCMP; |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| if (key->keyidx > priv->rx_keycache_size) { |
| /* |
| * The device supports the choosen algorithm, but the firmware |
| * does not provide enough key slots to store all of them. |
| * So, incoming frames have to be decoded by the mac80211 stack, |
| * but we can still offload encryption for outgoing frames. |
| */ |
| |
| return 0; |
| } |
| |
| mutex_lock(&priv->conf_mutex); |
| skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey), |
| P54_CONTROL_TYPE_RX_KEYCACHE, GFP_ATOMIC); |
| if (!skb) { |
| mutex_unlock(&priv->conf_mutex); |
| return -ENOMEM; |
| } |
| |
| /* TODO: some devices have 4 more free slots for rx keys */ |
| rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey)); |
| rxkey->entry = key->keyidx; |
| rxkey->key_id = key->keyidx; |
| rxkey->key_type = algo; |
| if (sta) |
| memcpy(rxkey->mac, sta->addr, ETH_ALEN); |
| else |
| memset(rxkey->mac, ~0, ETH_ALEN); |
| if (key->alg != ALG_TKIP) { |
| rxkey->key_len = min((u8)16, key->keylen); |
| memcpy(rxkey->key, key->key, rxkey->key_len); |
| } else { |
| rxkey->key_len = 24; |
| memcpy(rxkey->key, key->key, 16); |
| memcpy(&(rxkey->key[16]), &(key->key |
| [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8); |
| } |
| |
| priv->tx(dev, skb); |
| mutex_unlock(&priv->conf_mutex); |
| 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, |
| .set_tim = p54_set_tim, |
| .sta_notify = p54_sta_notify, |
| .set_key = p54_set_key, |
| .config = p54_config, |
| .config_interface = p54_config_interface, |
| .bss_info_changed = p54_bss_info_changed, |
| .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->hw = dev; |
| priv->mode = NL80211_IFTYPE_UNSPECIFIED; |
| priv->basic_rate_mask = 0x15f; |
| skb_queue_head_init(&priv->tx_queue); |
| dev->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
| IEEE80211_HW_SIGNAL_DBM | |
| IEEE80211_HW_NOISE_DBM; |
| |
| dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | |
| BIT(NL80211_IFTYPE_ADHOC) | |
| BIT(NL80211_IFTYPE_AP) | |
| BIT(NL80211_IFTYPE_MESH_POINT); |
| |
| dev->channel_change_time = 1000; /* TODO: find actual value */ |
| priv->tx_stats[P54_QUEUE_BEACON].limit = 1; |
| priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1; |
| priv->tx_stats[P54_QUEUE_MGMT].limit = 3; |
| priv->tx_stats[P54_QUEUE_CAB].limit = 3; |
| priv->tx_stats[P54_QUEUE_DATA].limit = 5; |
| dev->queues = 1; |
| priv->noise = -94; |
| /* |
| * We support at most 8 tries no matter which rate they're at, |
| * we cannot support max_rates * max_rate_tries as we set it |
| * here, but setting it correctly to 4/2 or so would limit us |
| * artificially if the RC algorithm wants just two rates, so |
| * let's say 4/7, we'll redistribute it at TX time, see the |
| * comments there. |
| */ |
| dev->max_rates = 4; |
| dev->max_rate_tries = 7; |
| dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 + |
| sizeof(struct p54_tx_data); |
| |
| mutex_init(&priv->conf_mutex); |
| init_completion(&priv->eeprom_comp); |
| INIT_DELAYED_WORK(&priv->work, p54_work); |
| |
| 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); |
| } |
| 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); |