diff options
Diffstat (limited to 'drivers/net/wireless/libertas/11d.c')
-rw-r--r-- | drivers/net/wireless/libertas/11d.c | 754 |
1 files changed, 754 insertions, 0 deletions
diff --git a/drivers/net/wireless/libertas/11d.c b/drivers/net/wireless/libertas/11d.c new file mode 100644 index 000000000000..e0ecc4d483bb --- /dev/null +++ b/drivers/net/wireless/libertas/11d.c @@ -0,0 +1,754 @@ +/** + * This file contains functions for 802.11D. + */ +#include <linux/ctype.h> +#include <linux/kernel.h> +#include <linux/wireless.h> + +#include "host.h" +#include "decl.h" +#include "11d.h" +#include "dev.h" +#include "wext.h" + +#define TX_PWR_DEFAULT 10 + +static struct region_code_mapping region_code_mapping[] = { + {"US ", 0x10}, /* US FCC */ + {"CA ", 0x10}, /* IC Canada */ + {"SG ", 0x10}, /* Singapore */ + {"EU ", 0x30}, /* ETSI */ + {"AU ", 0x30}, /* Australia */ + {"KR ", 0x30}, /* Republic Of Korea */ + {"ES ", 0x31}, /* Spain */ + {"FR ", 0x32}, /* France */ + {"JP ", 0x40}, /* Japan */ +}; + +/* Following 2 structure defines the supported channels */ +static struct chan_freq_power channel_freq_power_UN_BG[] = { + {1, 2412, TX_PWR_DEFAULT}, + {2, 2417, TX_PWR_DEFAULT}, + {3, 2422, TX_PWR_DEFAULT}, + {4, 2427, TX_PWR_DEFAULT}, + {5, 2432, TX_PWR_DEFAULT}, + {6, 2437, TX_PWR_DEFAULT}, + {7, 2442, TX_PWR_DEFAULT}, + {8, 2447, TX_PWR_DEFAULT}, + {9, 2452, TX_PWR_DEFAULT}, + {10, 2457, TX_PWR_DEFAULT}, + {11, 2462, TX_PWR_DEFAULT}, + {12, 2467, TX_PWR_DEFAULT}, + {13, 2472, TX_PWR_DEFAULT}, + {14, 2484, TX_PWR_DEFAULT} +}; + +static u8 wlan_region_2_code(u8 * region) +{ + u8 i; + u8 size = sizeof(region_code_mapping)/ + sizeof(struct region_code_mapping); + + for (i = 0; region[i] && i < COUNTRY_CODE_LEN; i++) + region[i] = toupper(region[i]); + + for (i = 0; i < size; i++) { + if (!memcmp(region, region_code_mapping[i].region, + COUNTRY_CODE_LEN)) + return (region_code_mapping[i].code); + } + + /* default is US */ + return (region_code_mapping[0].code); +} + +static u8 *wlan_code_2_region(u8 code) +{ + u8 i; + u8 size = sizeof(region_code_mapping) + / sizeof(struct region_code_mapping); + for (i = 0; i < size; i++) { + if (region_code_mapping[i].code == code) + return (region_code_mapping[i].region); + } + /* default is US */ + return (region_code_mapping[0].region); +} + +/** + * @brief This function finds the nrchan-th chan after the firstchan + * @param band band + * @param firstchan first channel number + * @param nrchan number of channels + * @return the nrchan-th chan number +*/ +static u8 wlan_get_chan_11d(u8 band, u8 firstchan, u8 nrchan, u8 * chan) +/*find the nrchan-th chan after the firstchan*/ +{ + u8 i; + struct chan_freq_power *cfp; + u8 cfp_no; + + cfp = channel_freq_power_UN_BG; + cfp_no = sizeof(channel_freq_power_UN_BG) / + sizeof(struct chan_freq_power); + + for (i = 0; i < cfp_no; i++) { + if ((cfp + i)->channel == firstchan) { + lbs_pr_debug(1, "firstchan found\n"); + break; + } + } + + if (i < cfp_no) { + /*if beyond the boundary */ + if (i + nrchan < cfp_no) { + *chan = (cfp + i + nrchan)->channel; + return 1; + } + } + + return 0; +} + +/** + * @brief This function Checks if chan txpwr is learned from AP/IBSS + * @param chan chan number + * @param parsed_region_chan pointer to parsed_region_chan_11d + * @return TRUE; FALSE +*/ +static u8 wlan_channel_known_11d(u8 chan, + struct parsed_region_chan_11d * parsed_region_chan) +{ + struct chan_power_11d *chanpwr = parsed_region_chan->chanpwr; + u8 nr_chan = parsed_region_chan->nr_chan; + u8 i = 0; + + lbs_dbg_hex("11D:parsed_region_chan:", (char *)chanpwr, + sizeof(struct chan_power_11d) * nr_chan); + + for (i = 0; i < nr_chan; i++) { + if (chan == chanpwr[i].chan) { + lbs_pr_debug(1, "11D: Found Chan:%d\n", chan); + return 1; + } + } + + lbs_pr_debug(1, "11D: Not Find Chan:%d\n", chan); + return 0; +} + +u32 libertas_chan_2_freq(u8 chan, u8 band) +{ + struct chan_freq_power *cf; + u16 cnt; + u16 i; + u32 freq = 0; + + cf = channel_freq_power_UN_BG; + cnt = + sizeof(channel_freq_power_UN_BG) / + sizeof(struct chan_freq_power); + + for (i = 0; i < cnt; i++) { + if (chan == cf[i].channel) + freq = cf[i].freq; + } + + return freq; +} + +static int generate_domain_info_11d(struct parsed_region_chan_11d + *parsed_region_chan, + struct wlan_802_11d_domain_reg * domaininfo) +{ + u8 nr_subband = 0; + + u8 nr_chan = parsed_region_chan->nr_chan; + u8 nr_parsedchan = 0; + + u8 firstchan = 0, nextchan = 0, maxpwr = 0; + + u8 i, flag = 0; + + memcpy(domaininfo->countrycode, parsed_region_chan->countrycode, + COUNTRY_CODE_LEN); + + lbs_pr_debug(1, "11D:nrchan=%d\n", nr_chan); + lbs_dbg_hex("11D:parsed_region_chan:", (char *)parsed_region_chan, + sizeof(struct parsed_region_chan_11d)); + + for (i = 0; i < nr_chan; i++) { + if (!flag) { + flag = 1; + nextchan = firstchan = + parsed_region_chan->chanpwr[i].chan; + maxpwr = parsed_region_chan->chanpwr[i].pwr; + nr_parsedchan = 1; + continue; + } + + if (parsed_region_chan->chanpwr[i].chan == nextchan + 1 && + parsed_region_chan->chanpwr[i].pwr == maxpwr) { + nextchan++; + nr_parsedchan++; + } else { + domaininfo->subband[nr_subband].firstchan = firstchan; + domaininfo->subband[nr_subband].nrchan = + nr_parsedchan; + domaininfo->subband[nr_subband].maxtxpwr = maxpwr; + nr_subband++; + nextchan = firstchan = + parsed_region_chan->chanpwr[i].chan; + maxpwr = parsed_region_chan->chanpwr[i].pwr; + } + } + + if (flag) { + domaininfo->subband[nr_subband].firstchan = firstchan; + domaininfo->subband[nr_subband].nrchan = nr_parsedchan; + domaininfo->subband[nr_subband].maxtxpwr = maxpwr; + nr_subband++; + } + domaininfo->nr_subband = nr_subband; + + lbs_pr_debug(1, "nr_subband=%x\n", domaininfo->nr_subband); + lbs_dbg_hex("11D:domaininfo:", (char *)domaininfo, + COUNTRY_CODE_LEN + 1 + + sizeof(struct ieeetypes_subbandset) * nr_subband); + return 0; +} + +/** + * @brief This function generates parsed_region_chan from Domain Info learned from AP/IBSS + * @param region_chan pointer to struct region_channel + * @param *parsed_region_chan pointer to parsed_region_chan_11d + * @return N/A +*/ +static void wlan_generate_parsed_region_chan_11d(struct region_channel * region_chan, + struct parsed_region_chan_11d * + parsed_region_chan) +{ + u8 i; + struct chan_freq_power *cfp; + + if (region_chan == NULL) { + lbs_pr_debug(1, "11D: region_chan is NULL\n"); + return; + } + + cfp = region_chan->CFP; + if (cfp == NULL) { + lbs_pr_debug(1, "11D: cfp equal NULL \n"); + return; + } + + parsed_region_chan->band = region_chan->band; + parsed_region_chan->region = region_chan->region; + memcpy(parsed_region_chan->countrycode, + wlan_code_2_region(region_chan->region), COUNTRY_CODE_LEN); + + lbs_pr_debug(1, "11D: region[0x%x] band[%d]\n", parsed_region_chan->region, + parsed_region_chan->band); + + for (i = 0; i < region_chan->nrcfp; i++, cfp++) { + parsed_region_chan->chanpwr[i].chan = cfp->channel; + parsed_region_chan->chanpwr[i].pwr = cfp->maxtxpower; + lbs_pr_debug(1, "11D: Chan[%d] Pwr[%d]\n", + parsed_region_chan->chanpwr[i].chan, + parsed_region_chan->chanpwr[i].pwr); + } + parsed_region_chan->nr_chan = region_chan->nrcfp; + + lbs_pr_debug(1, "11D: nrchan[%d]\n", parsed_region_chan->nr_chan); + + return; +} + +/** + * @brief generate parsed_region_chan from Domain Info learned from AP/IBSS + * @param region region ID + * @param band band + * @param chan chan + * @return TRUE;FALSE +*/ +static u8 wlan_region_chan_supported_11d(u8 region, u8 band, u8 chan) +{ + struct chan_freq_power *cfp; + int cfp_no; + u8 idx; + + ENTER(); + + cfp = libertas_get_region_cfp_table(region, band, &cfp_no); + if (cfp == NULL) + return 0; + + for (idx = 0; idx < cfp_no; idx++) { + if (chan == (cfp + idx)->channel) { + /* If Mrvl Chip Supported? */ + if ((cfp + idx)->unsupported) { + return 0; + } else { + return 1; + } + } + } + + /*chan is not in the region table */ + LEAVE(); + return 0; +} + +/** + * @brief This function checks if chan txpwr is learned from AP/IBSS + * @param chan chan number + * @param parsed_region_chan pointer to parsed_region_chan_11d + * @return 0 +*/ +static int parse_domain_info_11d(struct ieeetypes_countryinfofullset* + countryinfo, + u8 band, + struct parsed_region_chan_11d * + parsed_region_chan) +{ + u8 nr_subband, nrchan; + u8 lastchan, firstchan; + u8 region; + u8 curchan = 0; + + u8 idx = 0; /*chan index in parsed_region_chan */ + + u8 j, i; + + ENTER(); + + /*validation Rules: + 1. valid region Code + 2. First Chan increment + 3. channel range no overlap + 4. channel is valid? + 5. channel is supported by region? + 6. Others + */ + + lbs_dbg_hex("CountryInfo:", (u8 *) countryinfo, 30); + + if ((*(countryinfo->countrycode)) == 0 + || (countryinfo->len <= COUNTRY_CODE_LEN)) { + /* No region Info or Wrong region info: treat as No 11D info */ + LEAVE(); + return 0; + } + + /*Step1: check region_code */ + parsed_region_chan->region = region = + wlan_region_2_code(countryinfo->countrycode); + + lbs_pr_debug(1, "regioncode=%x\n", (u8) parsed_region_chan->region); + lbs_dbg_hex("CountryCode:", (char *)countryinfo->countrycode, + COUNTRY_CODE_LEN); + + parsed_region_chan->band = band; + + memcpy(parsed_region_chan->countrycode, countryinfo->countrycode, + COUNTRY_CODE_LEN); + + nr_subband = (countryinfo->len - COUNTRY_CODE_LEN) / + sizeof(struct ieeetypes_subbandset); + + for (j = 0, lastchan = 0; j < nr_subband; j++) { + + if (countryinfo->subband[j].firstchan <= lastchan) { + /*Step2&3. Check First Chan Num increment and no overlap */ + lbs_pr_debug(1, "11D: Chan[%d>%d] Overlap\n", + countryinfo->subband[j].firstchan, lastchan); + continue; + } + + firstchan = countryinfo->subband[j].firstchan; + nrchan = countryinfo->subband[j].nrchan; + + for (i = 0; idx < MAX_NO_OF_CHAN && i < nrchan; i++) { + /*step4: channel is supported? */ + + if (!wlan_get_chan_11d(band, firstchan, i, &curchan)) { + /* Chan is not found in UN table */ + lbs_pr_debug(1, "chan is not supported: %d \n", i); + break; + } + + lastchan = curchan; + + if (wlan_region_chan_supported_11d + (region, band, curchan)) { + /*step5: Check if curchan is supported by mrvl in region */ + parsed_region_chan->chanpwr[idx].chan = curchan; + parsed_region_chan->chanpwr[idx].pwr = + countryinfo->subband[j].maxtxpwr; + idx++; + } else { + /*not supported and ignore the chan */ + lbs_pr_debug(1, + "11D:i[%d] chan[%d] unsupported in region[%x] band[%d]\n", + i, curchan, region, band); + } + } + + /*Step6: Add other checking if any */ + + } + + parsed_region_chan->nr_chan = idx; + + lbs_pr_debug(1, "nrchan=%x\n", parsed_region_chan->nr_chan); + lbs_dbg_hex("11D:parsed_region_chan:", (u8 *) parsed_region_chan, + 2 + COUNTRY_CODE_LEN + sizeof(struct parsed_region_chan_11d) * idx); + + LEAVE(); + return 0; +} + +/** + * @brief This function calculates the scan type for channels + * @param chan chan number + * @param parsed_region_chan pointer to parsed_region_chan_11d + * @return PASSIVE if chan is unknown; ACTIVE if chan is known +*/ +u8 libertas_get_scan_type_11d(u8 chan, + struct parsed_region_chan_11d * parsed_region_chan) +{ + u8 scan_type = cmd_scan_type_passive; + + ENTER(); + + if (wlan_channel_known_11d(chan, parsed_region_chan)) { + lbs_pr_debug(1, "11D: Found and do Active Scan\n"); + scan_type = cmd_scan_type_active; + } else { + lbs_pr_debug(1, "11D: Not Find and do Passive Scan\n"); + } + + LEAVE(); + return scan_type; + +} + +void libertas_init_11d(wlan_private * priv) +{ + priv->adapter->enable11d = 0; + memset(&(priv->adapter->parsed_region_chan), 0, + sizeof(struct parsed_region_chan_11d)); + return; +} + +static int wlan_enable_11d(wlan_private * priv, u8 flag) +{ + int ret; + + priv->adapter->enable11d = flag; + + /* send cmd to FW to enable/disable 11D function in FW */ + ret = libertas_prepare_and_send_command(priv, + cmd_802_11_snmp_mib, + cmd_act_set, + cmd_option_waitforrsp, + OID_802_11D_ENABLE, + &priv->adapter->enable11d); + if (ret) + lbs_pr_debug(1, "11D: Fail to enable 11D \n"); + + return 0; +} + +/** + * @brief This function sets DOMAIN INFO to FW + * @param priv pointer to wlan_private + * @return 0; -1 +*/ +static int set_domain_info_11d(wlan_private * priv) +{ + int ret; + + if (!priv->adapter->enable11d) { + lbs_pr_debug(1, "11D: dnld domain Info with 11d disabled\n"); + return 0; + } + + ret = libertas_prepare_and_send_command(priv, cmd_802_11d_domain_info, + cmd_act_set, + cmd_option_waitforrsp, 0, NULL); + if (ret) + lbs_pr_debug(1, "11D: Fail to dnld domain Info\n"); + + return ret; +} + +/** + * @brief This function setups scan channels + * @param priv pointer to wlan_private + * @param band band + * @return 0 +*/ +int libertas_set_universaltable(wlan_private * priv, u8 band) +{ + wlan_adapter *adapter = priv->adapter; + u16 size = sizeof(struct chan_freq_power); + u16 i = 0; + + memset(adapter->universal_channel, 0, + sizeof(adapter->universal_channel)); + + adapter->universal_channel[i].nrcfp = + sizeof(channel_freq_power_UN_BG) / size; + lbs_pr_debug(1, "11D: BG-band nrcfp=%d\n", + adapter->universal_channel[i].nrcfp); + + adapter->universal_channel[i].CFP = channel_freq_power_UN_BG; + adapter->universal_channel[i].valid = 1; + adapter->universal_channel[i].region = UNIVERSAL_REGION_CODE; + adapter->universal_channel[i].band = band; + i++; + + return 0; +} + +/** + * @brief This function implements command CMD_802_11D_DOMAIN_INFO + * @param priv pointer to wlan_private + * @param cmd pointer to cmd buffer + * @param cmdno cmd ID + * @param cmdOption cmd action + * @return 0 +*/ +int libertas_cmd_802_11d_domain_info(wlan_private * priv, + struct cmd_ds_command *cmd, u16 cmdno, + u16 cmdoption) +{ + struct cmd_ds_802_11d_domain_info *pdomaininfo = + &cmd->params.domaininfo; + struct mrvlietypes_domainparamset *domain = &pdomaininfo->domain; + wlan_adapter *adapter = priv->adapter; + u8 nr_subband = adapter->domainreg.nr_subband; + + ENTER(); + + lbs_pr_debug(1, "nr_subband=%x\n", nr_subband); + + cmd->command = cpu_to_le16(cmdno); + pdomaininfo->action = cpu_to_le16(cmdoption); + if (cmdoption == cmd_act_get) { + cmd->size = + cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN); + lbs_dbg_hex("11D: 802_11D_DOMAIN_INFO:", (u8 *) cmd, + (int)(cmd->size)); + LEAVE(); + return 0; + } + + domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN); + memcpy(domain->countrycode, adapter->domainreg.countrycode, + sizeof(domain->countrycode)); + + domain->header.len = + cpu_to_le16(nr_subband * sizeof(struct ieeetypes_subbandset) + + sizeof(domain->countrycode)); + + if (nr_subband) { + memcpy(domain->subband, adapter->domainreg.subband, + nr_subband * sizeof(struct ieeetypes_subbandset)); + + cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) + + domain->header.len + + sizeof(struct mrvlietypesheader) + + S_DS_GEN); + } else { + cmd->size = + cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN); + } + + lbs_dbg_hex("11D:802_11D_DOMAIN_INFO:", (u8 *) cmd, (int)(cmd->size)); + + LEAVE(); + + return 0; +} + +/** + * @brief This function implements private cmd: enable/disable 11D + * @param priv pointer to wlan_private + * @param wrq pointer to user data + * @return 0 or -1 + */ +int libertas_cmd_enable_11d(wlan_private * priv, struct iwreq *wrq) +{ + int data = 0; + int *val; + + ENTER(); + data = SUBCMD_DATA(wrq); + + lbs_pr_debug(1, "enable 11D: %s\n", + (data == 1) ? "enable" : "Disable"); + + wlan_enable_11d(priv, data); + val = (int *)wrq->u.name; + *val = priv->adapter->enable11d; + + LEAVE(); + return 0; +} + +/** + * @brief This function parses countryinfo from AP and download country info to FW + * @param priv pointer to wlan_private + * @param resp pointer to command response buffer + * @return 0; -1 + */ +int libertas_ret_802_11d_domain_info(wlan_private * priv, + struct cmd_ds_command *resp) +{ + struct cmd_ds_802_11d_domain_info + *domaininfo = &resp->params.domaininforesp; + struct mrvlietypes_domainparamset *domain = &domaininfo->domain; + u16 action = le16_to_cpu(domaininfo->action); + s16 ret = 0; + u8 nr_subband = 0; + + ENTER(); + + lbs_dbg_hex("11D DOMAIN Info Rsp Data:", (u8 *) resp, + (int)le16_to_cpu(resp->size)); + + nr_subband = (domain->header.len - 3) / sizeof(struct ieeetypes_subbandset); + /* countrycode 3 bytes */ + + lbs_pr_debug(1, "11D Domain Info Resp: nr_subband=%d\n", nr_subband); + + if (nr_subband > MRVDRV_MAX_SUBBAND_802_11D) { + lbs_pr_debug(1, "Invalid Numrer of Subband returned!!\n"); + return -1; + } + + switch (action) { + case cmd_act_set: /*Proc Set action */ + break; + + case cmd_act_get: + break; + default: + lbs_pr_debug(1, "Invalid action:%d\n", domaininfo->action); + ret = -1; + break; + } + + LEAVE(); + return ret; +} + +/** + * @brief This function parses countryinfo from AP and download country info to FW + * @param priv pointer to wlan_private + * @return 0; -1 + */ +int libertas_parse_dnld_countryinfo_11d(wlan_private * priv) +{ + int ret; + wlan_adapter *adapter = priv->adapter; + + ENTER(); + if (priv->adapter->enable11d) { + memset(&adapter->parsed_region_chan, 0, + sizeof(struct parsed_region_chan_11d)); + ret = parse_domain_info_11d(&adapter->pattemptedbssdesc-> + countryinfo, 0, + &adapter->parsed_region_chan); + + if (ret == -1) { + lbs_pr_debug(1, "11D: Err Parse domain_info from AP..\n"); + LEAVE(); + return ret; + } + + memset(&adapter->domainreg, 0, + sizeof(struct wlan_802_11d_domain_reg)); + generate_domain_info_11d(&adapter->parsed_region_chan, + &adapter->domainreg); + + ret = set_domain_info_11d(priv); + + if (ret) { + lbs_pr_debug(1, "11D: Err set domainInfo to FW\n"); + LEAVE(); + return ret; + } + } + LEAVE(); + return 0; +} + +/** + * @brief This function generates 11D info from user specified regioncode and download to FW + * @param priv pointer to wlan_private + * @return 0; -1 + */ +int libertas_create_dnld_countryinfo_11d(wlan_private * priv) +{ + int ret; + wlan_adapter *adapter = priv->adapter; + struct region_channel *region_chan; + u8 j; + + ENTER(); + lbs_pr_debug(1, "11D:curbssparams.band[%d]\n", adapter->curbssparams.band); + + if (priv->adapter->enable11d) { + /* update parsed_region_chan_11; dnld domaininf to FW */ + + for (j = 0; j < sizeof(adapter->region_channel) / + sizeof(adapter->region_channel[0]); j++) { + region_chan = &adapter->region_channel[j]; + + lbs_pr_debug(1, "11D:[%d] region_chan->band[%d]\n", j, + region_chan->band); + + if (!region_chan || !region_chan->valid + || !region_chan->CFP) + continue; + if (region_chan->band != adapter->curbssparams.band) + continue; + break; + } + + if (j >= sizeof(adapter->region_channel) / + sizeof(adapter->region_channel[0])) { + lbs_pr_debug(1, "11D:region_chan not found. band[%d]\n", + adapter->curbssparams.band); + LEAVE(); + return -1; + } + + memset(&adapter->parsed_region_chan, 0, + sizeof(struct parsed_region_chan_11d)); + wlan_generate_parsed_region_chan_11d(region_chan, + &adapter-> + parsed_region_chan); + + memset(&adapter->domainreg, 0, + sizeof(struct wlan_802_11d_domain_reg)); + generate_domain_info_11d(&adapter->parsed_region_chan, + &adapter->domainreg); + + ret = set_domain_info_11d(priv); + + if (ret) { + lbs_pr_debug(1, "11D: Err set domainInfo to FW\n"); + LEAVE(); + return ret; + } + + } + + LEAVE(); + return 0; +} |