cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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zd_rf.c (3381B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/* ZD1211 USB-WLAN driver for Linux
      3 *
      4 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
      5 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
      6 */
      7
      8#include <linux/errno.h>
      9#include <linux/string.h>
     10
     11#include "zd_def.h"
     12#include "zd_rf.h"
     13#include "zd_mac.h"
     14#include "zd_chip.h"
     15
     16static const char * const rfs[] = {
     17	[0]		= "unknown RF0",
     18	[1]		= "unknown RF1",
     19	[UW2451_RF]	= "UW2451_RF",
     20	[UCHIP_RF]	= "UCHIP_RF",
     21	[AL2230_RF]	= "AL2230_RF",
     22	[AL7230B_RF]	= "AL7230B_RF",
     23	[THETA_RF]	= "THETA_RF",
     24	[AL2210_RF]	= "AL2210_RF",
     25	[MAXIM_NEW_RF]	= "MAXIM_NEW_RF",
     26	[UW2453_RF]	= "UW2453_RF",
     27	[AL2230S_RF]	= "AL2230S_RF",
     28	[RALINK_RF]	= "RALINK_RF",
     29	[INTERSIL_RF]	= "INTERSIL_RF",
     30	[RF2959_RF]	= "RF2959_RF",
     31	[MAXIM_NEW2_RF]	= "MAXIM_NEW2_RF",
     32	[PHILIPS_RF]	= "PHILIPS_RF",
     33};
     34
     35const char *zd_rf_name(u8 type)
     36{
     37	if (type & 0xf0)
     38		type = 0;
     39	return rfs[type];
     40}
     41
     42void zd_rf_init(struct zd_rf *rf)
     43{
     44	memset(rf, 0, sizeof(*rf));
     45
     46	/* default to update channel integration, as almost all RF's do want
     47	 * this */
     48	rf->update_channel_int = 1;
     49}
     50
     51void zd_rf_clear(struct zd_rf *rf)
     52{
     53	if (rf->clear)
     54		rf->clear(rf);
     55	ZD_MEMCLEAR(rf, sizeof(*rf));
     56}
     57
     58int zd_rf_init_hw(struct zd_rf *rf, u8 type)
     59{
     60	int r = 0;
     61	int t;
     62	struct zd_chip *chip = zd_rf_to_chip(rf);
     63
     64	ZD_ASSERT(mutex_is_locked(&chip->mutex));
     65	switch (type) {
     66	case RF2959_RF:
     67		r = zd_rf_init_rf2959(rf);
     68		break;
     69	case AL2230_RF:
     70	case AL2230S_RF:
     71		r = zd_rf_init_al2230(rf);
     72		break;
     73	case AL7230B_RF:
     74		r = zd_rf_init_al7230b(rf);
     75		break;
     76	case MAXIM_NEW_RF:
     77	case UW2453_RF:
     78		r = zd_rf_init_uw2453(rf);
     79		break;
     80	default:
     81		dev_err(zd_chip_dev(chip),
     82			"RF %s %#x is not supported\n", zd_rf_name(type), type);
     83		rf->type = 0;
     84		return -ENODEV;
     85	}
     86
     87	if (r)
     88		return r;
     89
     90	rf->type = type;
     91
     92	r = zd_chip_lock_phy_regs(chip);
     93	if (r)
     94		return r;
     95	t = rf->init_hw(rf);
     96	r = zd_chip_unlock_phy_regs(chip);
     97	if (t)
     98		r = t;
     99	return r;
    100}
    101
    102int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
    103{
    104	return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
    105}
    106
    107int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
    108{
    109	int r;
    110
    111	ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
    112	if (channel < MIN_CHANNEL24)
    113		return -EINVAL;
    114	if (channel > MAX_CHANNEL24)
    115		return -EINVAL;
    116	dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
    117
    118	r = rf->set_channel(rf, channel);
    119	if (r >= 0)
    120		rf->channel = channel;
    121	return r;
    122}
    123
    124int zd_switch_radio_on(struct zd_rf *rf)
    125{
    126	int r, t;
    127	struct zd_chip *chip = zd_rf_to_chip(rf);
    128
    129	ZD_ASSERT(mutex_is_locked(&chip->mutex));
    130	r = zd_chip_lock_phy_regs(chip);
    131	if (r)
    132		return r;
    133	t = rf->switch_radio_on(rf);
    134	r = zd_chip_unlock_phy_regs(chip);
    135	if (t)
    136		r = t;
    137	return r;
    138}
    139
    140int zd_switch_radio_off(struct zd_rf *rf)
    141{
    142	int r, t;
    143	struct zd_chip *chip = zd_rf_to_chip(rf);
    144
    145	/* TODO: move phy regs handling to zd_chip */
    146	ZD_ASSERT(mutex_is_locked(&chip->mutex));
    147	r = zd_chip_lock_phy_regs(chip);
    148	if (r)
    149		return r;
    150	t = rf->switch_radio_off(rf);
    151	r = zd_chip_unlock_phy_regs(chip);
    152	if (t)
    153		r = t;
    154	return r;
    155}
    156
    157int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
    158{
    159	if (!rf->patch_6m_band_edge)
    160		return 0;
    161
    162	return rf->patch_6m_band_edge(rf, channel);
    163}
    164
    165int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
    166{
    167	return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
    168}
    169