| // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
| /* |
| * Copyright (C) 2005-2014, 2020 Intel Corporation |
| * Copyright (C) 2016 Intel Deutschland GmbH |
| */ |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/export.h> |
| |
| #include "iwl-drv.h" |
| #include "iwl-phy-db.h" |
| #include "iwl-debug.h" |
| #include "iwl-op-mode.h" |
| #include "iwl-trans.h" |
| |
| #define CHANNEL_NUM_SIZE 4 /* num of channels in calib_ch size */ |
| |
| struct iwl_phy_db_entry { |
| u16 size; |
| u8 *data; |
| }; |
| |
| /** |
| * struct iwl_phy_db - stores phy configuration and calibration data. |
| * |
| * @cfg: phy configuration. |
| * @calib_nch: non channel specific calibration data. |
| * @n_group_papd: number of entries in papd channel group. |
| * @calib_ch_group_papd: calibration data related to papd channel group. |
| * @n_group_txp: number of entries in tx power channel group. |
| * @calib_ch_group_txp: calibration data related to tx power chanel group. |
| * @trans: transport layer |
| */ |
| struct iwl_phy_db { |
| struct iwl_phy_db_entry cfg; |
| struct iwl_phy_db_entry calib_nch; |
| int n_group_papd; |
| struct iwl_phy_db_entry *calib_ch_group_papd; |
| int n_group_txp; |
| struct iwl_phy_db_entry *calib_ch_group_txp; |
| |
| struct iwl_trans *trans; |
| }; |
| |
| enum iwl_phy_db_section_type { |
| IWL_PHY_DB_CFG = 1, |
| IWL_PHY_DB_CALIB_NCH, |
| IWL_PHY_DB_UNUSED, |
| IWL_PHY_DB_CALIB_CHG_PAPD, |
| IWL_PHY_DB_CALIB_CHG_TXP, |
| IWL_PHY_DB_MAX |
| }; |
| |
| #define PHY_DB_CMD 0x6c |
| |
| /* for parsing of tx power channel group data that comes from the firmware*/ |
| struct iwl_phy_db_chg_txp { |
| __le32 space; |
| __le16 max_channel_idx; |
| } __packed; |
| |
| struct iwl_phy_db *iwl_phy_db_init(struct iwl_trans *trans) |
| { |
| struct iwl_phy_db *phy_db = kzalloc(sizeof(struct iwl_phy_db), |
| GFP_KERNEL); |
| |
| if (!phy_db) |
| return phy_db; |
| |
| phy_db->trans = trans; |
| |
| phy_db->n_group_txp = -1; |
| phy_db->n_group_papd = -1; |
| |
| /* TODO: add default values of the phy db. */ |
| return phy_db; |
| } |
| IWL_EXPORT_SYMBOL(iwl_phy_db_init); |
| |
| /* |
| * get phy db section: returns a pointer to a phy db section specified by |
| * type and channel group id. |
| */ |
| static struct iwl_phy_db_entry * |
| iwl_phy_db_get_section(struct iwl_phy_db *phy_db, |
| enum iwl_phy_db_section_type type, |
| u16 chg_id) |
| { |
| if (!phy_db || type >= IWL_PHY_DB_MAX) |
| return NULL; |
| |
| switch (type) { |
| case IWL_PHY_DB_CFG: |
| return &phy_db->cfg; |
| case IWL_PHY_DB_CALIB_NCH: |
| return &phy_db->calib_nch; |
| case IWL_PHY_DB_CALIB_CHG_PAPD: |
| if (chg_id >= phy_db->n_group_papd) |
| return NULL; |
| return &phy_db->calib_ch_group_papd[chg_id]; |
| case IWL_PHY_DB_CALIB_CHG_TXP: |
| if (chg_id >= phy_db->n_group_txp) |
| return NULL; |
| return &phy_db->calib_ch_group_txp[chg_id]; |
| default: |
| return NULL; |
| } |
| return NULL; |
| } |
| |
| static void iwl_phy_db_free_section(struct iwl_phy_db *phy_db, |
| enum iwl_phy_db_section_type type, |
| u16 chg_id) |
| { |
| struct iwl_phy_db_entry *entry = |
| iwl_phy_db_get_section(phy_db, type, chg_id); |
| if (!entry) |
| return; |
| |
| kfree(entry->data); |
| entry->data = NULL; |
| entry->size = 0; |
| } |
| |
| void iwl_phy_db_free(struct iwl_phy_db *phy_db) |
| { |
| int i; |
| |
| if (!phy_db) |
| return; |
| |
| iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CFG, 0); |
| iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_NCH, 0); |
| |
| for (i = 0; i < phy_db->n_group_papd; i++) |
| iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_CHG_PAPD, i); |
| kfree(phy_db->calib_ch_group_papd); |
| |
| for (i = 0; i < phy_db->n_group_txp; i++) |
| iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_CHG_TXP, i); |
| kfree(phy_db->calib_ch_group_txp); |
| |
| kfree(phy_db); |
| } |
| IWL_EXPORT_SYMBOL(iwl_phy_db_free); |
| |
| int iwl_phy_db_set_section(struct iwl_phy_db *phy_db, |
| struct iwl_rx_packet *pkt) |
| { |
| unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); |
| struct iwl_calib_res_notif_phy_db *phy_db_notif = |
| (struct iwl_calib_res_notif_phy_db *)pkt->data; |
| enum iwl_phy_db_section_type type; |
| u16 size; |
| struct iwl_phy_db_entry *entry; |
| u16 chg_id = 0; |
| |
| if (pkt_len < sizeof(*phy_db_notif)) |
| return -EINVAL; |
| |
| type = le16_to_cpu(phy_db_notif->type); |
| size = le16_to_cpu(phy_db_notif->length); |
| |
| if (pkt_len < sizeof(*phy_db_notif) + size) |
| return -EINVAL; |
| |
| if (!phy_db) |
| return -EINVAL; |
| |
| if (type == IWL_PHY_DB_CALIB_CHG_PAPD) { |
| chg_id = le16_to_cpup((__le16 *)phy_db_notif->data); |
| if (phy_db && !phy_db->calib_ch_group_papd) { |
| /* |
| * Firmware sends the largest index first, so we can use |
| * it to know how much we should allocate. |
| */ |
| phy_db->calib_ch_group_papd = kcalloc(chg_id + 1, |
| sizeof(struct iwl_phy_db_entry), |
| GFP_ATOMIC); |
| if (!phy_db->calib_ch_group_papd) |
| return -ENOMEM; |
| phy_db->n_group_papd = chg_id + 1; |
| } |
| } else if (type == IWL_PHY_DB_CALIB_CHG_TXP) { |
| chg_id = le16_to_cpup((__le16 *)phy_db_notif->data); |
| if (phy_db && !phy_db->calib_ch_group_txp) { |
| /* |
| * Firmware sends the largest index first, so we can use |
| * it to know how much we should allocate. |
| */ |
| phy_db->calib_ch_group_txp = kcalloc(chg_id + 1, |
| sizeof(struct iwl_phy_db_entry), |
| GFP_ATOMIC); |
| if (!phy_db->calib_ch_group_txp) |
| return -ENOMEM; |
| phy_db->n_group_txp = chg_id + 1; |
| } |
| } |
| |
| entry = iwl_phy_db_get_section(phy_db, type, chg_id); |
| if (!entry) |
| return -EINVAL; |
| |
| kfree(entry->data); |
| entry->data = kmemdup(phy_db_notif->data, size, GFP_ATOMIC); |
| if (!entry->data) { |
| entry->size = 0; |
| return -ENOMEM; |
| } |
| |
| entry->size = size; |
| |
| IWL_DEBUG_INFO(phy_db->trans, |
| "%s(%d): [PHYDB]SET: Type %d , Size: %d\n", |
| __func__, __LINE__, type, size); |
| |
| return 0; |
| } |
| IWL_EXPORT_SYMBOL(iwl_phy_db_set_section); |
| |
| static int is_valid_channel(u16 ch_id) |
| { |
| if (ch_id <= 14 || |
| (36 <= ch_id && ch_id <= 64 && ch_id % 4 == 0) || |
| (100 <= ch_id && ch_id <= 140 && ch_id % 4 == 0) || |
| (145 <= ch_id && ch_id <= 165 && ch_id % 4 == 1)) |
| return 1; |
| return 0; |
| } |
| |
| static u8 ch_id_to_ch_index(u16 ch_id) |
| { |
| if (WARN_ON(!is_valid_channel(ch_id))) |
| return 0xff; |
| |
| if (ch_id <= 14) |
| return ch_id - 1; |
| if (ch_id <= 64) |
| return (ch_id + 20) / 4; |
| if (ch_id <= 140) |
| return (ch_id - 12) / 4; |
| return (ch_id - 13) / 4; |
| } |
| |
| |
| static u16 channel_id_to_papd(u16 ch_id) |
| { |
| if (WARN_ON(!is_valid_channel(ch_id))) |
| return 0xff; |
| |
| if (1 <= ch_id && ch_id <= 14) |
| return 0; |
| if (36 <= ch_id && ch_id <= 64) |
| return 1; |
| if (100 <= ch_id && ch_id <= 140) |
| return 2; |
| return 3; |
| } |
| |
| static u16 channel_id_to_txp(struct iwl_phy_db *phy_db, u16 ch_id) |
| { |
| struct iwl_phy_db_chg_txp *txp_chg; |
| int i; |
| u8 ch_index = ch_id_to_ch_index(ch_id); |
| if (ch_index == 0xff) |
| return 0xff; |
| |
| for (i = 0; i < phy_db->n_group_txp; i++) { |
| txp_chg = (void *)phy_db->calib_ch_group_txp[i].data; |
| if (!txp_chg) |
| return 0xff; |
| /* |
| * Looking for the first channel group that its max channel is |
| * higher then wanted channel. |
| */ |
| if (le16_to_cpu(txp_chg->max_channel_idx) >= ch_index) |
| return i; |
| } |
| return 0xff; |
| } |
| static |
| int iwl_phy_db_get_section_data(struct iwl_phy_db *phy_db, |
| u32 type, u8 **data, u16 *size, u16 ch_id) |
| { |
| struct iwl_phy_db_entry *entry; |
| u16 ch_group_id = 0; |
| |
| if (!phy_db) |
| return -EINVAL; |
| |
| /* find wanted channel group */ |
| if (type == IWL_PHY_DB_CALIB_CHG_PAPD) |
| ch_group_id = channel_id_to_papd(ch_id); |
| else if (type == IWL_PHY_DB_CALIB_CHG_TXP) |
| ch_group_id = channel_id_to_txp(phy_db, ch_id); |
| |
| entry = iwl_phy_db_get_section(phy_db, type, ch_group_id); |
| if (!entry) |
| return -EINVAL; |
| |
| *data = entry->data; |
| *size = entry->size; |
| |
| IWL_DEBUG_INFO(phy_db->trans, |
| "%s(%d): [PHYDB] GET: Type %d , Size: %d\n", |
| __func__, __LINE__, type, *size); |
| |
| return 0; |
| } |
| |
| static int iwl_send_phy_db_cmd(struct iwl_phy_db *phy_db, u16 type, |
| u16 length, void *data) |
| { |
| struct iwl_phy_db_cmd phy_db_cmd; |
| struct iwl_host_cmd cmd = { |
| .id = PHY_DB_CMD, |
| }; |
| |
| IWL_DEBUG_INFO(phy_db->trans, |
| "Sending PHY-DB hcmd of type %d, of length %d\n", |
| type, length); |
| |
| /* Set phy db cmd variables */ |
| phy_db_cmd.type = cpu_to_le16(type); |
| phy_db_cmd.length = cpu_to_le16(length); |
| |
| /* Set hcmd variables */ |
| cmd.data[0] = &phy_db_cmd; |
| cmd.len[0] = sizeof(struct iwl_phy_db_cmd); |
| cmd.data[1] = data; |
| cmd.len[1] = length; |
| cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; |
| |
| return iwl_trans_send_cmd(phy_db->trans, &cmd); |
| } |
| |
| static int iwl_phy_db_send_all_channel_groups( |
| struct iwl_phy_db *phy_db, |
| enum iwl_phy_db_section_type type, |
| u8 max_ch_groups) |
| { |
| u16 i; |
| int err; |
| struct iwl_phy_db_entry *entry; |
| |
| /* Send all the channel specific groups to operational fw */ |
| for (i = 0; i < max_ch_groups; i++) { |
| entry = iwl_phy_db_get_section(phy_db, |
| type, |
| i); |
| if (!entry) |
| return -EINVAL; |
| |
| if (!entry->size) |
| continue; |
| |
| /* Send the requested PHY DB section */ |
| err = iwl_send_phy_db_cmd(phy_db, |
| type, |
| entry->size, |
| entry->data); |
| if (err) { |
| IWL_ERR(phy_db->trans, |
| "Can't SEND phy_db section %d (%d), err %d\n", |
| type, i, err); |
| return err; |
| } |
| |
| IWL_DEBUG_INFO(phy_db->trans, |
| "Sent PHY_DB HCMD, type = %d num = %d\n", |
| type, i); |
| } |
| |
| return 0; |
| } |
| |
| int iwl_send_phy_db_data(struct iwl_phy_db *phy_db) |
| { |
| u8 *data = NULL; |
| u16 size = 0; |
| int err; |
| |
| IWL_DEBUG_INFO(phy_db->trans, |
| "Sending phy db data and configuration to runtime image\n"); |
| |
| /* Send PHY DB CFG section */ |
| err = iwl_phy_db_get_section_data(phy_db, IWL_PHY_DB_CFG, |
| &data, &size, 0); |
| if (err) { |
| IWL_ERR(phy_db->trans, "Cannot get Phy DB cfg section\n"); |
| return err; |
| } |
| |
| err = iwl_send_phy_db_cmd(phy_db, IWL_PHY_DB_CFG, size, data); |
| if (err) { |
| IWL_ERR(phy_db->trans, |
| "Cannot send HCMD of Phy DB cfg section\n"); |
| return err; |
| } |
| |
| err = iwl_phy_db_get_section_data(phy_db, IWL_PHY_DB_CALIB_NCH, |
| &data, &size, 0); |
| if (err) { |
| IWL_ERR(phy_db->trans, |
| "Cannot get Phy DB non specific channel section\n"); |
| return err; |
| } |
| |
| err = iwl_send_phy_db_cmd(phy_db, IWL_PHY_DB_CALIB_NCH, size, data); |
| if (err) { |
| IWL_ERR(phy_db->trans, |
| "Cannot send HCMD of Phy DB non specific channel section\n"); |
| return err; |
| } |
| |
| /* Send all the TXP channel specific data */ |
| err = iwl_phy_db_send_all_channel_groups(phy_db, |
| IWL_PHY_DB_CALIB_CHG_PAPD, |
| phy_db->n_group_papd); |
| if (err) { |
| IWL_ERR(phy_db->trans, |
| "Cannot send channel specific PAPD groups\n"); |
| return err; |
| } |
| |
| /* Send all the TXP channel specific data */ |
| err = iwl_phy_db_send_all_channel_groups(phy_db, |
| IWL_PHY_DB_CALIB_CHG_TXP, |
| phy_db->n_group_txp); |
| if (err) { |
| IWL_ERR(phy_db->trans, |
| "Cannot send channel specific TX power groups\n"); |
| return err; |
| } |
| |
| IWL_DEBUG_INFO(phy_db->trans, |
| "Finished sending phy db non channel data\n"); |
| return 0; |
| } |
| IWL_EXPORT_SYMBOL(iwl_send_phy_db_data); |