lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
fa20b91143
linux-kernel-test/drivers/net/wireless/brcm80211/brcmsmac/rate.h
Arend van Spriel 1433c59bcc brcm80211: smac: remove phy api bypass in rate.h 
Obviously the phy api should be used to interface with the phy. In
rate.h a table within phy was accessed directly by declaring the
table extern in rate.h itself. This patch fixes this using the
provided api function to obtain the table reference. This bypass
was found by a sparse warning on the table not being defined static.

Reviewed-by: Alwin Beukers <alwin@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-08 15:54:09 -05:00

250 lines
7.1 KiB
C
Raw Blame History

/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _BRCM_RATE_H_
#define _BRCM_RATE_H_
#include "types.h"
#include "d11.h"
#include "phy_hal.h"
extern const u8 rate_info[];
extern const struct brcms_c_rateset cck_ofdm_mimo_rates;
extern const struct brcms_c_rateset ofdm_mimo_rates;
extern const struct brcms_c_rateset cck_ofdm_rates;
extern const struct brcms_c_rateset ofdm_rates;
extern const struct brcms_c_rateset cck_rates;
extern const struct brcms_c_rateset gphy_legacy_rates;
extern const struct brcms_c_rateset rate_limit_1_2;
struct brcms_mcs_info {
/* phy rate in kbps [20Mhz] */
u32 phy_rate_20;
/* phy rate in kbps [40Mhz] */
u32 phy_rate_40;
/* phy rate in kbps [20Mhz] with SGI */
u32 phy_rate_20_sgi;
/* phy rate in kbps [40Mhz] with SGI */
u32 phy_rate_40_sgi;
/* phy ctl byte 3, code rate, modulation type, # of streams */
u8 tx_phy_ctl3;
/* matching legacy ofdm rate in 500bkps */
u8 leg_ofdm;
};
#define BRCMS_MAXMCS 32 /* max valid mcs index */
#define MCS_TABLE_SIZE 33 /* Number of mcs entries in the table */
extern const struct brcms_mcs_info mcs_table[];
#define MCS_TXS_MASK 0xc0 /* num tx streams - 1 bit mask */
#define MCS_TXS_SHIFT 6 /* num tx streams - 1 bit shift */
/* returns num tx streams - 1 */
static inline u8 mcs_2_txstreams(u8 mcs)
{
return (mcs_table[mcs].tx_phy_ctl3 & MCS_TXS_MASK) >> MCS_TXS_SHIFT;
}
static inline uint mcs_2_rate(u8 mcs, bool is40, bool sgi)
{
if (sgi) {
if (is40)
return mcs_table[mcs].phy_rate_40_sgi;
return mcs_table[mcs].phy_rate_20_sgi;
}
if (is40)
return mcs_table[mcs].phy_rate_40;
return mcs_table[mcs].phy_rate_20;
}
/* Macro to use the rate_info table */
#define BRCMS_RATE_MASK_FULL 0xff /* Rate value mask with basic rate flag */
/*
* rate spec : holds rate and mode specific information required to generate a
* tx frame. Legacy CCK and OFDM information is held in the same manner as was
* done in the past (in the lower byte) the upper 3 bytes primarily hold MIMO
* specific information
*/
/* rate spec bit fields */
/* Either 500Kbps units or MIMO MCS idx */
#define RSPEC_RATE_MASK 0x0000007F
/* mimo MCS is stored in RSPEC_RATE_MASK */
#define RSPEC_MIMORATE 0x08000000
/* mimo bw mask */
#define RSPEC_BW_MASK 0x00000700
/* mimo bw shift */
#define RSPEC_BW_SHIFT 8
/* mimo Space/Time/Frequency mode mask */
#define RSPEC_STF_MASK 0x00003800
/* mimo Space/Time/Frequency mode shift */
#define RSPEC_STF_SHIFT 11
/* mimo coding type mask */
#define RSPEC_CT_MASK 0x0000C000
/* mimo coding type shift */
#define RSPEC_CT_SHIFT 14
/* mimo num STC streams per PLCP defn. */
#define RSPEC_STC_MASK 0x00300000
/* mimo num STC streams per PLCP defn. */
#define RSPEC_STC_SHIFT 20
/* mimo bit indicates adv coding in use */
#define RSPEC_LDPC_CODING 0x00400000
/* mimo bit indicates short GI in use */
#define RSPEC_SHORT_GI 0x00800000
/* bit indicates override both rate & mode */
#define RSPEC_OVERRIDE 0x80000000
/* bit indicates override rate only */
#define RSPEC_OVERRIDE_MCS_ONLY 0x40000000
static inline bool rspec_active(u32 rspec)
{
return rspec & (RSPEC_RATE_MASK | RSPEC_MIMORATE);
}
static inline u8 rspec_phytxbyte2(u32 rspec)
{
return (rspec & 0xff00) >> 8;
}
static inline u32 rspec_get_bw(u32 rspec)
{
return (rspec & RSPEC_BW_MASK) >> RSPEC_BW_SHIFT;
}
static inline bool rspec_issgi(u32 rspec)
{
return (rspec & RSPEC_SHORT_GI) == RSPEC_SHORT_GI;
}
static inline bool rspec_is40mhz(u32 rspec)
{
u32 bw = rspec_get_bw(rspec);
return bw == PHY_TXC1_BW_40MHZ || bw == PHY_TXC1_BW_40MHZ_DUP;
}
static inline uint rspec2rate(u32 rspec)
{
if (rspec & RSPEC_MIMORATE)
return mcs_2_rate(rspec & RSPEC_RATE_MASK, rspec_is40mhz(rspec),
rspec_issgi(rspec));
return rspec & RSPEC_RATE_MASK;
}
static inline u8 rspec_mimoplcp3(u32 rspec)
{
return (rspec & 0xf00000) >> 16;
}
static inline bool plcp3_issgi(u8 plcp)
{
return (plcp & (RSPEC_SHORT_GI >> 16)) != 0;
}
static inline uint rspec_stc(u32 rspec)
{
return (rspec & RSPEC_STC_MASK) >> RSPEC_STC_SHIFT;
}
static inline uint rspec_stf(u32 rspec)
{
return (rspec & RSPEC_STF_MASK) >> RSPEC_STF_SHIFT;
}
static inline bool is_mcs_rate(u32 ratespec)
{
return (ratespec & RSPEC_MIMORATE) != 0;
}
static inline bool is_ofdm_rate(u32 ratespec)
{
return !is_mcs_rate(ratespec) &&
(rate_info[ratespec & RSPEC_RATE_MASK] & BRCMS_RATE_FLAG);
}
static inline bool is_cck_rate(u32 ratespec)
{
u32 rate = (ratespec & BRCMS_RATE_MASK);
return !is_mcs_rate(ratespec) && (
rate == BRCM_RATE_1M || rate == BRCM_RATE_2M ||
rate == BRCM_RATE_5M5 || rate == BRCM_RATE_11M);
}
static inline bool is_single_stream(u8 mcs)
{
return mcs <= HIGHEST_SINGLE_STREAM_MCS || mcs == 32;
}
static inline u8 cck_rspec(u8 cck)
{
return cck & RSPEC_RATE_MASK;
}
/* Convert encoded rate value in plcp header to numerical rates in 500 KHz
* increments */
static inline u8 ofdm_phy2mac_rate(u8 rlpt)
{
return wlc_phy_get_ofdm_rate_lookup()[rlpt & 0x7];
}
static inline u8 cck_phy2mac_rate(u8 signal)
{
return signal/5;
}
/* Rates specified in brcms_c_rateset_filter() */
#define BRCMS_RATES_CCK_OFDM 0
#define BRCMS_RATES_CCK 1
#define BRCMS_RATES_OFDM 2
/* sanitize, and sort a rateset with the basic bit(s) preserved, validate
* rateset */
extern bool
brcms_c_rate_hwrs_filter_sort_validate(struct brcms_c_rateset *rs,
const struct brcms_c_rateset *hw_rs,
bool check_brate, u8 txstreams);
/* copy rateset src to dst as-is (no masking or sorting) */
extern void brcms_c_rateset_copy(const struct brcms_c_rateset *src,
struct brcms_c_rateset *dst);
/* would be nice to have these documented ... */
extern u32 brcms_c_compute_rspec(struct d11rxhdr *rxh, u8 *plcp);
extern void brcms_c_rateset_filter(struct brcms_c_rateset *src,
struct brcms_c_rateset *dst, bool basic_only, u8 rates, uint xmask,
bool mcsallow);
extern void
brcms_c_rateset_default(struct brcms_c_rateset *rs_tgt,
const struct brcms_c_rateset *rs_hw, uint phy_type,
int bandtype, bool cck_only, uint rate_mask,
bool mcsallow, u8 bw, u8 txstreams);
extern s16 brcms_c_rate_legacy_phyctl(uint rate);
extern void brcms_c_rateset_mcs_upd(struct brcms_c_rateset *rs, u8 txstreams);
extern void brcms_c_rateset_mcs_clear(struct brcms_c_rateset *rateset);
extern void brcms_c_rateset_mcs_build(struct brcms_c_rateset *rateset,
u8 txstreams);
extern void brcms_c_rateset_bw_mcs_filter(struct brcms_c_rateset *rateset,
u8 bw);
#endif /* _BRCM_RATE_H_ */
Reference in New Issue View Git Blame Copy Permalink