Orange Pi5 kernel

/******************************************************************************
 *
 * 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.
 *
 * 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
 
/* 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)
{
<------>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;
}
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);