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Release 4.11 drivers/net/wireless/intel/iwlwifi/iwl-phy-db.c

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2016 Intel Deutschland GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/

#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.
 * @calib_ch: 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.
 */

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

/*
 * phy db - configure operational ucode
 */

struct iwl_phy_db_cmd {
	
__le16 type;
	
__le16 length;
	
u8 data[];
} 
__packed;

/* 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;

/*
 * phy db - Receive phy db chunk after calibrations
 */

struct iwl_calib_res_notif_phy_db {
	
__le16 type;
	
__le16 length;
	
u8 data[];
} 
__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; }

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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; }

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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; }

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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); }

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IWL_EXPORT_SYMBOL(iwl_phy_db_free);
int iwl_phy_db_set_section(struct iwl_phy_db *phy_db, struct iwl_rx_packet *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 = le16_to_cpu(phy_db_notif->type); u16 size = le16_to_cpu(phy_db_notif->length); struct iwl_phy_db_entry *entry; u16 chg_id = 0; 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; }

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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; }

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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; }

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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; }

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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; }

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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; }

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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); }

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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; }

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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; }

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IWL_EXPORT_SYMBOL(iwl_send_phy_db_data);

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Total1733100.00%8100.00%
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