X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fnet%2Fwireless%2Fiwlwifi%2Fiwl-eeprom.c;h=4a08a1b50979b7453fcddc1a32d4a042733c67cc;hb=1b63ba8a86c85524a8d7e5953b314ce71ebcb9c9;hp=0064387dea91e3995cda27d189f75f72786c6c61;hpb=34cf6ff6dd42cbc61fd652f893dcf71eed6052a5;p=linux-2.6 diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c index 0064387dea..4a08a1b509 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c @@ -68,12 +68,73 @@ #include -#include "iwl-4965-commands.h" -#include "iwl-4965.h" +#include "iwl-commands.h" +#include "iwl-dev.h" #include "iwl-core.h" -#include "iwl-4965-debug.h" +#include "iwl-debug.h" #include "iwl-eeprom.h" -#include "iwl-4965-io.h" +#include "iwl-io.h" + +/************************** EEPROM BANDS **************************** + * + * The iwl_eeprom_band definitions below provide the mapping from the + * EEPROM contents to the specific channel number supported for each + * band. + * + * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3 + * definition below maps to physical channel 42 in the 5.2GHz spectrum. + * The specific geography and calibration information for that channel + * is contained in the eeprom map itself. + * + * During init, we copy the eeprom information and channel map + * information into priv->channel_info_24/52 and priv->channel_map_24/52 + * + * channel_map_24/52 provides the index in the channel_info array for a + * given channel. We have to have two separate maps as there is channel + * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and + * band_2 + * + * A value of 0xff stored in the channel_map indicates that the channel + * is not supported by the hardware at all. + * + * A value of 0xfe in the channel_map indicates that the channel is not + * valid for Tx with the current hardware. This means that + * while the system can tune and receive on a given channel, it may not + * be able to associate or transmit any frames on that + * channel. There is no corresponding channel information for that + * entry. + * + *********************************************************************/ + +/* 2.4 GHz */ +const u8 iwl_eeprom_band_1[14] = { + 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 +}; + +/* 5.2 GHz bands */ +static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */ + 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 +}; + +static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */ + 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 +}; + +static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */ + 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 +}; + +static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */ + 145, 149, 153, 157, 161, 165 +}; + +static const u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */ + 1, 2, 3, 4, 5, 6, 7 +}; + +static const u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */ + 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 +}; /****************************************************************************** * @@ -81,9 +142,9 @@ * ******************************************************************************/ -int iwlcore_eeprom_verify_signature(struct iwl4965_priv *priv) +int iwlcore_eeprom_verify_signature(struct iwl_priv *priv) { - u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP); + u32 gp = iwl_read32(priv, CSR_EEPROM_GP); if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) { IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp); return -ENOENT; @@ -98,21 +159,21 @@ EXPORT_SYMBOL(iwlcore_eeprom_verify_signature); * EEPROM chip, not a single event, so even reads could conflict if they * weren't arbitrated by the semaphore. */ -int iwlcore_eeprom_acquire_semaphore(struct iwl4965_priv *priv) +int iwlcore_eeprom_acquire_semaphore(struct iwl_priv *priv) { u16 count; int ret; for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) { /* Request semaphore */ - iwl4965_set_bit(priv, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); /* See if we got it */ - ret = iwl4965_poll_bit(priv, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, - CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, - EEPROM_SEM_TIMEOUT); + ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, + CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, + EEPROM_SEM_TIMEOUT); if (ret >= 0) { IWL_DEBUG_IO("Acquired semaphore after %d tries.\n", count+1); @@ -124,14 +185,20 @@ int iwlcore_eeprom_acquire_semaphore(struct iwl4965_priv *priv) } EXPORT_SYMBOL(iwlcore_eeprom_acquire_semaphore); -void iwlcore_eeprom_release_semaphore(struct iwl4965_priv *priv) +void iwlcore_eeprom_release_semaphore(struct iwl_priv *priv) { - iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG, + iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); } EXPORT_SYMBOL(iwlcore_eeprom_release_semaphore); +const u8 *iwlcore_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) +{ + BUG_ON(offset >= priv->cfg->eeprom_size); + return &priv->eeprom[offset]; +} +EXPORT_SYMBOL(iwlcore_eeprom_query_addr); /** * iwl_eeprom_init - read EEPROM contents @@ -140,42 +207,47 @@ EXPORT_SYMBOL(iwlcore_eeprom_release_semaphore); * * NOTE: This routine uses the non-debug IO access functions. */ -int iwl_eeprom_init(struct iwl4965_priv *priv) +int iwl_eeprom_init(struct iwl_priv *priv) { - u16 *e = (u16 *)&priv->eeprom; - u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP); + u16 *e; + u32 gp = iwl_read32(priv, CSR_EEPROM_GP); u32 r; - int sz = sizeof(priv->eeprom); + int sz = priv->cfg->eeprom_size; int ret; int i; u16 addr; - /* The EEPROM structure has several padding buffers within it - * and when adding new EEPROM maps is subject to programmer errors - * which may be very difficult to identify without explicitly - * checking the resulting size of the eeprom map. */ - BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE); + /* allocate eeprom */ + priv->eeprom = kzalloc(sz, GFP_KERNEL); + if (!priv->eeprom) { + ret = -ENOMEM; + goto alloc_err; + } + e = (u16 *)priv->eeprom; - if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) { + ret = priv->cfg->ops->lib->eeprom_ops.verify_signature(priv); + if (ret < 0) { IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp); - return -ENOENT; + ret = -ENOENT; + goto err; } /* Make sure driver (instead of uCode) is allowed to read EEPROM */ ret = priv->cfg->ops->lib->eeprom_ops.acquire_semaphore(priv); if (ret < 0) { IWL_ERROR("Failed to acquire EEPROM semaphore.\n"); - return -ENOENT; + ret = -ENOENT; + goto err; } /* eeprom is an array of 16bit values */ for (addr = 0; addr < sz; addr += sizeof(u16)) { - _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1); - _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD); + _iwl_write32(priv, CSR_EEPROM_REG, addr << 1); + _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD); for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT; i += IWL_EEPROM_ACCESS_DELAY) { - r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG); + r = _iwl_read_direct32(priv, CSR_EEPROM_REG); if (r & CSR_EEPROM_REG_READ_VALID_MSK) break; udelay(IWL_EEPROM_ACCESS_DELAY); @@ -189,17 +261,346 @@ int iwl_eeprom_init(struct iwl4965_priv *priv) e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16)); } ret = 0; - done: priv->cfg->ops->lib->eeprom_ops.release_semaphore(priv); +err: + if (ret) + kfree(priv->eeprom); +alloc_err: return ret; } EXPORT_SYMBOL(iwl_eeprom_init); +void iwl_eeprom_free(struct iwl_priv *priv) +{ + if(priv->eeprom) + kfree(priv->eeprom); + priv->eeprom = NULL; +} +EXPORT_SYMBOL(iwl_eeprom_free); + +int iwl_eeprom_check_version(struct iwl_priv *priv) +{ + return priv->cfg->ops->lib->eeprom_ops.check_version(priv); +} +EXPORT_SYMBOL(iwl_eeprom_check_version); -void iwl_eeprom_get_mac(const struct iwl4965_priv *priv, u8 *mac) +const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) { - memcpy(mac, priv->eeprom.mac_address, 6); + return priv->cfg->ops->lib->eeprom_ops.query_addr(priv, offset); +} +EXPORT_SYMBOL(iwl_eeprom_query_addr); + +u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset) +{ + return (u16)priv->eeprom[offset] | ((u16)priv->eeprom[offset + 1] << 8); +} +EXPORT_SYMBOL(iwl_eeprom_query16); + +void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac) +{ + const u8 *addr = priv->cfg->ops->lib->eeprom_ops.query_addr(priv, + EEPROM_MAC_ADDRESS); + memcpy(mac, addr, ETH_ALEN); } EXPORT_SYMBOL(iwl_eeprom_get_mac); +static void iwl_init_band_reference(const struct iwl_priv *priv, + int eep_band, int *eeprom_ch_count, + const struct iwl_eeprom_channel **eeprom_ch_info, + const u8 **eeprom_ch_index) +{ + u32 offset = priv->cfg->ops->lib-> + eeprom_ops.regulatory_bands[eep_band - 1]; + switch (eep_band) { + case 1: /* 2.4GHz band */ + *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1); + *eeprom_ch_info = (struct iwl_eeprom_channel *) + iwl_eeprom_query_addr(priv, offset); + *eeprom_ch_index = iwl_eeprom_band_1; + break; + case 2: /* 4.9GHz band */ + *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2); + *eeprom_ch_info = (struct iwl_eeprom_channel *) + iwl_eeprom_query_addr(priv, offset); + *eeprom_ch_index = iwl_eeprom_band_2; + break; + case 3: /* 5.2GHz band */ + *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3); + *eeprom_ch_info = (struct iwl_eeprom_channel *) + iwl_eeprom_query_addr(priv, offset); + *eeprom_ch_index = iwl_eeprom_band_3; + break; + case 4: /* 5.5GHz band */ + *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4); + *eeprom_ch_info = (struct iwl_eeprom_channel *) + iwl_eeprom_query_addr(priv, offset); + *eeprom_ch_index = iwl_eeprom_band_4; + break; + case 5: /* 5.7GHz band */ + *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5); + *eeprom_ch_info = (struct iwl_eeprom_channel *) + iwl_eeprom_query_addr(priv, offset); + *eeprom_ch_index = iwl_eeprom_band_5; + break; + case 6: /* 2.4GHz FAT channels */ + *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6); + *eeprom_ch_info = (struct iwl_eeprom_channel *) + iwl_eeprom_query_addr(priv, offset); + *eeprom_ch_index = iwl_eeprom_band_6; + break; + case 7: /* 5 GHz FAT channels */ + *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7); + *eeprom_ch_info = (struct iwl_eeprom_channel *) + iwl_eeprom_query_addr(priv, offset); + *eeprom_ch_index = iwl_eeprom_band_7; + break; + default: + BUG(); + return; + } +} + +#define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \ + ? # x " " : "") + +/** + * iwl_set_fat_chan_info - Copy fat channel info into driver's priv. + * + * Does not set up a command, or touch hardware. + */ +static int iwl_set_fat_chan_info(struct iwl_priv *priv, + enum ieee80211_band band, u16 channel, + const struct iwl_eeprom_channel *eeprom_ch, + u8 fat_extension_channel) +{ + struct iwl_channel_info *ch_info; + + ch_info = (struct iwl_channel_info *) + iwl_get_channel_info(priv, band, channel); + + if (!is_channel_valid(ch_info)) + return -1; + + IWL_DEBUG_INFO("FAT Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):" + " Ad-Hoc %ssupported\n", + ch_info->channel, + is_channel_a_band(ch_info) ? + "5.2" : "2.4", + CHECK_AND_PRINT(IBSS), + CHECK_AND_PRINT(ACTIVE), + CHECK_AND_PRINT(RADAR), + CHECK_AND_PRINT(WIDE), + CHECK_AND_PRINT(DFS), + eeprom_ch->flags, + eeprom_ch->max_power_avg, + ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) + && !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? + "" : "not "); + + ch_info->fat_eeprom = *eeprom_ch; + ch_info->fat_max_power_avg = eeprom_ch->max_power_avg; + ch_info->fat_curr_txpow = eeprom_ch->max_power_avg; + ch_info->fat_min_power = 0; + ch_info->fat_scan_power = eeprom_ch->max_power_avg; + ch_info->fat_flags = eeprom_ch->flags; + ch_info->fat_extension_channel = fat_extension_channel; + + return 0; +} + +#define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ + ? # x " " : "") + +/** + * iwl_init_channel_map - Set up driver's info for all possible channels + */ +int iwl_init_channel_map(struct iwl_priv *priv) +{ + int eeprom_ch_count = 0; + const u8 *eeprom_ch_index = NULL; + const struct iwl_eeprom_channel *eeprom_ch_info = NULL; + int band, ch; + struct iwl_channel_info *ch_info; + + if (priv->channel_count) { + IWL_DEBUG_INFO("Channel map already initialized.\n"); + return 0; + } + + IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n"); + + priv->channel_count = + ARRAY_SIZE(iwl_eeprom_band_1) + + ARRAY_SIZE(iwl_eeprom_band_2) + + ARRAY_SIZE(iwl_eeprom_band_3) + + ARRAY_SIZE(iwl_eeprom_band_4) + + ARRAY_SIZE(iwl_eeprom_band_5); + + IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count); + + priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) * + priv->channel_count, GFP_KERNEL); + if (!priv->channel_info) { + IWL_ERROR("Could not allocate channel_info\n"); + priv->channel_count = 0; + return -ENOMEM; + } + + ch_info = priv->channel_info; + + /* Loop through the 5 EEPROM bands adding them in order to the + * channel map we maintain (that contains additional information than + * what just in the EEPROM) */ + for (band = 1; band <= 5; band++) { + + iwl_init_band_reference(priv, band, &eeprom_ch_count, + &eeprom_ch_info, &eeprom_ch_index); + + /* Loop through each band adding each of the channels */ + for (ch = 0; ch < eeprom_ch_count; ch++) { + ch_info->channel = eeprom_ch_index[ch]; + ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ : + IEEE80211_BAND_5GHZ; + + /* permanently store EEPROM's channel regulatory flags + * and max power in channel info database. */ + ch_info->eeprom = eeprom_ch_info[ch]; + + /* Copy the run-time flags so they are there even on + * invalid channels */ + ch_info->flags = eeprom_ch_info[ch].flags; + /* First write that fat is not enabled, and then enable + * one by one */ + ch_info->fat_extension_channel = + (IEEE80211_CHAN_NO_FAT_ABOVE | + IEEE80211_CHAN_NO_FAT_BELOW); + + if (!(is_channel_valid(ch_info))) { + IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - " + "No traffic\n", + ch_info->channel, + ch_info->flags, + is_channel_a_band(ch_info) ? + "5.2" : "2.4"); + ch_info++; + continue; + } + + /* Initialize regulatory-based run-time data */ + ch_info->max_power_avg = ch_info->curr_txpow = + eeprom_ch_info[ch].max_power_avg; + ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; + ch_info->min_power = 0; + + IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm):" + " Ad-Hoc %ssupported\n", + ch_info->channel, + is_channel_a_band(ch_info) ? + "5.2" : "2.4", + CHECK_AND_PRINT_I(VALID), + CHECK_AND_PRINT_I(IBSS), + CHECK_AND_PRINT_I(ACTIVE), + CHECK_AND_PRINT_I(RADAR), + CHECK_AND_PRINT_I(WIDE), + CHECK_AND_PRINT_I(DFS), + eeprom_ch_info[ch].flags, + eeprom_ch_info[ch].max_power_avg, + ((eeprom_ch_info[ch]. + flags & EEPROM_CHANNEL_IBSS) + && !(eeprom_ch_info[ch]. + flags & EEPROM_CHANNEL_RADAR)) + ? "" : "not "); + + /* Set the user_txpower_limit to the highest power + * supported by any channel */ + if (eeprom_ch_info[ch].max_power_avg > + priv->tx_power_user_lmt) + priv->tx_power_user_lmt = + eeprom_ch_info[ch].max_power_avg; + + ch_info++; + } + } + + /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */ + for (band = 6; band <= 7; band++) { + enum ieee80211_band ieeeband; + u8 fat_extension_chan; + + iwl_init_band_reference(priv, band, &eeprom_ch_count, + &eeprom_ch_info, &eeprom_ch_index); + + /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ + ieeeband = + (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; + + /* Loop through each band adding each of the channels */ + for (ch = 0; ch < eeprom_ch_count; ch++) { + + if ((band == 6) && + ((eeprom_ch_index[ch] == 5) || + (eeprom_ch_index[ch] == 6) || + (eeprom_ch_index[ch] == 7))) + /* both are allowed: above and below */ + fat_extension_chan = 0; + else + fat_extension_chan = + IEEE80211_CHAN_NO_FAT_BELOW; + + /* Set up driver's info for lower half */ + iwl_set_fat_chan_info(priv, ieeeband, + eeprom_ch_index[ch], + &(eeprom_ch_info[ch]), + fat_extension_chan); + + /* Set up driver's info for upper half */ + iwl_set_fat_chan_info(priv, ieeeband, + (eeprom_ch_index[ch] + 4), + &(eeprom_ch_info[ch]), + IEEE80211_CHAN_NO_FAT_ABOVE); + } + } + + return 0; +} +EXPORT_SYMBOL(iwl_init_channel_map); + +/* + * iwl_free_channel_map - undo allocations in iwl_init_channel_map + */ +void iwl_free_channel_map(struct iwl_priv *priv) +{ + kfree(priv->channel_info); + priv->channel_count = 0; +} + +/** + * iwl_get_channel_info - Find driver's private channel info + * + * Based on band and channel number. + */ +const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv, + enum ieee80211_band band, u16 channel) +{ + int i; + + switch (band) { + case IEEE80211_BAND_5GHZ: + for (i = 14; i < priv->channel_count; i++) { + if (priv->channel_info[i].channel == channel) + return &priv->channel_info[i]; + } + break; + case IEEE80211_BAND_2GHZ: + if (channel >= 1 && channel <= 14) + return &priv->channel_info[channel - 1]; + break; + default: + BUG(); + } + + return NULL; +} +EXPORT_SYMBOL(iwl_get_channel_info); +