diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmutil')
3 files changed, 620 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmutil/Makefile b/drivers/net/wireless/broadcom/brcm80211/brcmutil/Makefile new file mode 100644 index 000000000..256c91f9a --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmutil/Makefile @@ -0,0 +1,23 @@ +# +# Makefile fragment for Broadcom 802.11n Networking Device Driver Utilities +# +# Copyright (c) 2011 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. + +ccflags-y := \ + -Idrivers/net/wireless/broadcom/brcm80211/brcmutil \ + -Idrivers/net/wireless/broadcom/brcm80211/include + +obj-$(CONFIG_BRCMUTIL) += brcmutil.o +brcmutil-objs = utils.o d11.o diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c b/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c new file mode 100644 index 000000000..eb5db94f5 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c @@ -0,0 +1,258 @@ +/* + * Copyright (c) 2013 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. + */ +/*********************channel spec common functions*********************/ + +#include <linux/module.h> + +#include <brcmu_utils.h> +#include <brcmu_wifi.h> +#include <brcmu_d11.h> + +static u16 d11n_sb(enum brcmu_chan_sb sb) +{ + switch (sb) { + case BRCMU_CHAN_SB_NONE: + return BRCMU_CHSPEC_D11N_SB_N; + case BRCMU_CHAN_SB_L: + return BRCMU_CHSPEC_D11N_SB_L; + case BRCMU_CHAN_SB_U: + return BRCMU_CHSPEC_D11N_SB_U; + default: + WARN_ON(1); + } + return 0; +} + +static u16 d11n_bw(enum brcmu_chan_bw bw) +{ + switch (bw) { + case BRCMU_CHAN_BW_20: + return BRCMU_CHSPEC_D11N_BW_20; + case BRCMU_CHAN_BW_40: + return BRCMU_CHSPEC_D11N_BW_40; + default: + WARN_ON(1); + } + return 0; +} + +static void brcmu_d11n_encchspec(struct brcmu_chan *ch) +{ + if (ch->bw == BRCMU_CHAN_BW_20) + ch->sb = BRCMU_CHAN_SB_NONE; + + ch->chspec = 0; + brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_CH_MASK, + BRCMU_CHSPEC_CH_SHIFT, ch->chnum); + brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_D11N_SB_MASK, + 0, d11n_sb(ch->sb)); + brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_D11N_BW_MASK, + 0, d11n_bw(ch->bw)); + + if (ch->chnum <= CH_MAX_2G_CHANNEL) + ch->chspec |= BRCMU_CHSPEC_D11N_BND_2G; + else + ch->chspec |= BRCMU_CHSPEC_D11N_BND_5G; +} + +static u16 d11ac_bw(enum brcmu_chan_bw bw) +{ + switch (bw) { + case BRCMU_CHAN_BW_20: + return BRCMU_CHSPEC_D11AC_BW_20; + case BRCMU_CHAN_BW_40: + return BRCMU_CHSPEC_D11AC_BW_40; + case BRCMU_CHAN_BW_80: + return BRCMU_CHSPEC_D11AC_BW_80; + case BRCMU_CHAN_BW_160: + return BRCMU_CHSPEC_D11AC_BW_160; + default: + WARN_ON(1); + } + return 0; +} + +static void brcmu_d11ac_encchspec(struct brcmu_chan *ch) +{ + if (ch->bw == BRCMU_CHAN_BW_20 || ch->sb == BRCMU_CHAN_SB_NONE) + ch->sb = BRCMU_CHAN_SB_L; + + brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_CH_MASK, + BRCMU_CHSPEC_CH_SHIFT, ch->chnum); + brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_D11AC_SB_MASK, + BRCMU_CHSPEC_D11AC_SB_SHIFT, ch->sb); + brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_D11AC_BW_MASK, + 0, d11ac_bw(ch->bw)); + + ch->chspec &= ~BRCMU_CHSPEC_D11AC_BND_MASK; + if (ch->chnum <= CH_MAX_2G_CHANNEL) + ch->chspec |= BRCMU_CHSPEC_D11AC_BND_2G; + else + ch->chspec |= BRCMU_CHSPEC_D11AC_BND_5G; +} + +static void brcmu_d11n_decchspec(struct brcmu_chan *ch) +{ + u16 val; + + ch->chnum = (u8)(ch->chspec & BRCMU_CHSPEC_CH_MASK); + ch->control_ch_num = ch->chnum; + + switch (ch->chspec & BRCMU_CHSPEC_D11N_BW_MASK) { + case BRCMU_CHSPEC_D11N_BW_20: + ch->bw = BRCMU_CHAN_BW_20; + ch->sb = BRCMU_CHAN_SB_NONE; + break; + case BRCMU_CHSPEC_D11N_BW_40: + ch->bw = BRCMU_CHAN_BW_40; + val = ch->chspec & BRCMU_CHSPEC_D11N_SB_MASK; + if (val == BRCMU_CHSPEC_D11N_SB_L) { + ch->sb = BRCMU_CHAN_SB_L; + ch->control_ch_num -= CH_10MHZ_APART; + } else { + ch->sb = BRCMU_CHAN_SB_U; + ch->control_ch_num += CH_10MHZ_APART; + } + break; + default: + WARN_ON_ONCE(1); + break; + } + + switch (ch->chspec & BRCMU_CHSPEC_D11N_BND_MASK) { + case BRCMU_CHSPEC_D11N_BND_5G: + ch->band = BRCMU_CHAN_BAND_5G; + break; + case BRCMU_CHSPEC_D11N_BND_2G: + ch->band = BRCMU_CHAN_BAND_2G; + break; + default: + WARN_ON_ONCE(1); + break; + } +} + +static void brcmu_d11ac_decchspec(struct brcmu_chan *ch) +{ + u16 val; + + ch->chnum = (u8)(ch->chspec & BRCMU_CHSPEC_CH_MASK); + ch->control_ch_num = ch->chnum; + + switch (ch->chspec & BRCMU_CHSPEC_D11AC_BW_MASK) { + case BRCMU_CHSPEC_D11AC_BW_20: + ch->bw = BRCMU_CHAN_BW_20; + ch->sb = BRCMU_CHAN_SB_NONE; + break; + case BRCMU_CHSPEC_D11AC_BW_40: + ch->bw = BRCMU_CHAN_BW_40; + val = ch->chspec & BRCMU_CHSPEC_D11AC_SB_MASK; + if (val == BRCMU_CHSPEC_D11AC_SB_L) { + ch->sb = BRCMU_CHAN_SB_L; + ch->control_ch_num -= CH_10MHZ_APART; + } else if (val == BRCMU_CHSPEC_D11AC_SB_U) { + ch->sb = BRCMU_CHAN_SB_U; + ch->control_ch_num += CH_10MHZ_APART; + } else { + WARN_ON_ONCE(1); + } + break; + case BRCMU_CHSPEC_D11AC_BW_80: + ch->bw = BRCMU_CHAN_BW_80; + ch->sb = brcmu_maskget16(ch->chspec, BRCMU_CHSPEC_D11AC_SB_MASK, + BRCMU_CHSPEC_D11AC_SB_SHIFT); + switch (ch->sb) { + case BRCMU_CHAN_SB_LL: + ch->control_ch_num -= CH_30MHZ_APART; + break; + case BRCMU_CHAN_SB_LU: + ch->control_ch_num -= CH_10MHZ_APART; + break; + case BRCMU_CHAN_SB_UL: + ch->control_ch_num += CH_10MHZ_APART; + break; + case BRCMU_CHAN_SB_UU: + ch->control_ch_num += CH_30MHZ_APART; + break; + default: + WARN_ON_ONCE(1); + break; + } + break; + case BRCMU_CHSPEC_D11AC_BW_160: + ch->bw = BRCMU_CHAN_BW_160; + ch->sb = brcmu_maskget16(ch->chspec, BRCMU_CHSPEC_D11AC_SB_MASK, + BRCMU_CHSPEC_D11AC_SB_SHIFT); + switch (ch->sb) { + case BRCMU_CHAN_SB_LLL: + ch->control_ch_num -= CH_70MHZ_APART; + break; + case BRCMU_CHAN_SB_LLU: + ch->control_ch_num -= CH_50MHZ_APART; + break; + case BRCMU_CHAN_SB_LUL: + ch->control_ch_num -= CH_30MHZ_APART; + break; + case BRCMU_CHAN_SB_LUU: + ch->control_ch_num -= CH_10MHZ_APART; + break; + case BRCMU_CHAN_SB_ULL: + ch->control_ch_num += CH_10MHZ_APART; + break; + case BRCMU_CHAN_SB_ULU: + ch->control_ch_num += CH_30MHZ_APART; + break; + case BRCMU_CHAN_SB_UUL: + ch->control_ch_num += CH_50MHZ_APART; + break; + case BRCMU_CHAN_SB_UUU: + ch->control_ch_num += CH_70MHZ_APART; + break; + default: + WARN_ON_ONCE(1); + break; + } + break; + case BRCMU_CHSPEC_D11AC_BW_8080: + default: + WARN_ON_ONCE(1); + break; + } + + switch (ch->chspec & BRCMU_CHSPEC_D11AC_BND_MASK) { + case BRCMU_CHSPEC_D11AC_BND_5G: + ch->band = BRCMU_CHAN_BAND_5G; + break; + case BRCMU_CHSPEC_D11AC_BND_2G: + ch->band = BRCMU_CHAN_BAND_2G; + break; + default: + WARN_ON_ONCE(1); + break; + } +} + +void brcmu_d11_attach(struct brcmu_d11inf *d11inf) +{ + if (d11inf->io_type == BRCMU_D11N_IOTYPE) { + d11inf->encchspec = brcmu_d11n_encchspec; + d11inf->decchspec = brcmu_d11n_decchspec; + } else { + d11inf->encchspec = brcmu_d11ac_encchspec; + d11inf->decchspec = brcmu_d11ac_decchspec; + } +} +EXPORT_SYMBOL(brcmu_d11_attach); diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c b/drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c new file mode 100644 index 000000000..054360700 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c @@ -0,0 +1,339 @@ +/* + * 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. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/netdevice.h> +#include <linux/module.h> + +#include <brcmu_utils.h> + +MODULE_AUTHOR("Broadcom Corporation"); +MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver utilities."); +MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards"); +MODULE_LICENSE("Dual BSD/GPL"); + +struct sk_buff *brcmu_pkt_buf_get_skb(uint len) +{ + struct sk_buff *skb; + + skb = dev_alloc_skb(len); + if (skb) { + skb_put(skb, len); + skb->priority = 0; + } + + return skb; +} +EXPORT_SYMBOL(brcmu_pkt_buf_get_skb); + +/* Free the driver packet. Free the tag if present */ +void brcmu_pkt_buf_free_skb(struct sk_buff *skb) +{ + if (!skb) + return; + + WARN_ON(skb->next); + dev_kfree_skb_any(skb); +} +EXPORT_SYMBOL(brcmu_pkt_buf_free_skb); + +/* + * osl multiple-precedence packet queue + * hi_prec is always >= the number of the highest non-empty precedence + */ +struct sk_buff *brcmu_pktq_penq(struct pktq *pq, int prec, + struct sk_buff *p) +{ + struct sk_buff_head *q; + + if (pktq_full(pq) || pktq_pfull(pq, prec)) + return NULL; + + q = &pq->q[prec].skblist; + skb_queue_tail(q, p); + pq->len++; + + if (pq->hi_prec < prec) + pq->hi_prec = (u8) prec; + + return p; +} +EXPORT_SYMBOL(brcmu_pktq_penq); + +struct sk_buff *brcmu_pktq_penq_head(struct pktq *pq, int prec, + struct sk_buff *p) +{ + struct sk_buff_head *q; + + if (pktq_full(pq) || pktq_pfull(pq, prec)) + return NULL; + + q = &pq->q[prec].skblist; + skb_queue_head(q, p); + pq->len++; + + if (pq->hi_prec < prec) + pq->hi_prec = (u8) prec; + + return p; +} +EXPORT_SYMBOL(brcmu_pktq_penq_head); + +struct sk_buff *brcmu_pktq_pdeq(struct pktq *pq, int prec) +{ + struct sk_buff_head *q; + struct sk_buff *p; + + q = &pq->q[prec].skblist; + p = skb_dequeue(q); + if (p == NULL) + return NULL; + + pq->len--; + return p; +} +EXPORT_SYMBOL(brcmu_pktq_pdeq); + +/* + * precedence based dequeue with match function. Passing a NULL pointer + * for the match function parameter is considered to be a wildcard so + * any packet on the queue is returned. In that case it is no different + * from brcmu_pktq_pdeq() above. + */ +struct sk_buff *brcmu_pktq_pdeq_match(struct pktq *pq, int prec, + bool (*match_fn)(struct sk_buff *skb, + void *arg), void *arg) +{ + struct sk_buff_head *q; + struct sk_buff *p, *next; + + q = &pq->q[prec].skblist; + skb_queue_walk_safe(q, p, next) { + if (match_fn == NULL || match_fn(p, arg)) { + skb_unlink(p, q); + pq->len--; + return p; + } + } + return NULL; +} +EXPORT_SYMBOL(brcmu_pktq_pdeq_match); + +struct sk_buff *brcmu_pktq_pdeq_tail(struct pktq *pq, int prec) +{ + struct sk_buff_head *q; + struct sk_buff *p; + + q = &pq->q[prec].skblist; + p = skb_dequeue_tail(q); + if (p == NULL) + return NULL; + + pq->len--; + return p; +} +EXPORT_SYMBOL(brcmu_pktq_pdeq_tail); + +void +brcmu_pktq_pflush(struct pktq *pq, int prec, bool dir, + bool (*fn)(struct sk_buff *, void *), void *arg) +{ + struct sk_buff_head *q; + struct sk_buff *p, *next; + + q = &pq->q[prec].skblist; + skb_queue_walk_safe(q, p, next) { + if (fn == NULL || (*fn) (p, arg)) { + skb_unlink(p, q); + brcmu_pkt_buf_free_skb(p); + pq->len--; + } + } +} +EXPORT_SYMBOL(brcmu_pktq_pflush); + +void brcmu_pktq_flush(struct pktq *pq, bool dir, + bool (*fn)(struct sk_buff *, void *), void *arg) +{ + int prec; + for (prec = 0; prec < pq->num_prec; prec++) + brcmu_pktq_pflush(pq, prec, dir, fn, arg); +} +EXPORT_SYMBOL(brcmu_pktq_flush); + +void brcmu_pktq_init(struct pktq *pq, int num_prec, int max_len) +{ + int prec; + + /* pq is variable size; only zero out what's requested */ + memset(pq, 0, + offsetof(struct pktq, q) + (sizeof(struct pktq_prec) * num_prec)); + + pq->num_prec = (u16) num_prec; + + pq->max = (u16) max_len; + + for (prec = 0; prec < num_prec; prec++) { + pq->q[prec].max = pq->max; + skb_queue_head_init(&pq->q[prec].skblist); + } +} +EXPORT_SYMBOL(brcmu_pktq_init); + +struct sk_buff *brcmu_pktq_peek_tail(struct pktq *pq, int *prec_out) +{ + int prec; + + if (pq->len == 0) + return NULL; + + for (prec = 0; prec < pq->hi_prec; prec++) + if (!skb_queue_empty(&pq->q[prec].skblist)) + break; + + if (prec_out) + *prec_out = prec; + + return skb_peek_tail(&pq->q[prec].skblist); +} +EXPORT_SYMBOL(brcmu_pktq_peek_tail); + +/* Return sum of lengths of a specific set of precedences */ +int brcmu_pktq_mlen(struct pktq *pq, uint prec_bmp) +{ + int prec, len; + + len = 0; + + for (prec = 0; prec <= pq->hi_prec; prec++) + if (prec_bmp & (1 << prec)) + len += pq->q[prec].skblist.qlen; + + return len; +} +EXPORT_SYMBOL(brcmu_pktq_mlen); + +/* Priority dequeue from a specific set of precedences */ +struct sk_buff *brcmu_pktq_mdeq(struct pktq *pq, uint prec_bmp, + int *prec_out) +{ + struct sk_buff_head *q; + struct sk_buff *p; + int prec; + + if (pq->len == 0) + return NULL; + + while ((prec = pq->hi_prec) > 0 && + skb_queue_empty(&pq->q[prec].skblist)) + pq->hi_prec--; + + while ((prec_bmp & (1 << prec)) == 0 || + skb_queue_empty(&pq->q[prec].skblist)) + if (prec-- == 0) + return NULL; + + q = &pq->q[prec].skblist; + p = skb_dequeue(q); + if (p == NULL) + return NULL; + + pq->len--; + + if (prec_out) + *prec_out = prec; + + return p; +} +EXPORT_SYMBOL(brcmu_pktq_mdeq); + +/* Produce a human-readable string for boardrev */ +char *brcmu_boardrev_str(u32 brev, char *buf) +{ + char c; + + if (brev < 0x100) { + snprintf(buf, BRCMU_BOARDREV_LEN, "%d.%d", + (brev & 0xf0) >> 4, brev & 0xf); + } else { + c = (brev & 0xf000) == 0x1000 ? 'P' : 'A'; + snprintf(buf, BRCMU_BOARDREV_LEN, "%c%03x", c, brev & 0xfff); + } + return buf; +} +EXPORT_SYMBOL(brcmu_boardrev_str); + +char *brcmu_dotrev_str(u32 dotrev, char *buf) +{ + u8 dotval[4]; + + if (!dotrev) { + snprintf(buf, BRCMU_DOTREV_LEN, "unknown"); + return buf; + } + dotval[0] = (dotrev >> 24) & 0xFF; + dotval[1] = (dotrev >> 16) & 0xFF; + dotval[2] = (dotrev >> 8) & 0xFF; + dotval[3] = dotrev & 0xFF; + + if (dotval[3]) + snprintf(buf, BRCMU_DOTREV_LEN, "%d.%d.%d.%d", dotval[0], + dotval[1], dotval[2], dotval[3]); + else if (dotval[2]) + snprintf(buf, BRCMU_DOTREV_LEN, "%d.%d.%d", dotval[0], + dotval[1], dotval[2]); + else + snprintf(buf, BRCMU_DOTREV_LEN, "%d.%d", dotval[0], + dotval[1]); + + return buf; +} +EXPORT_SYMBOL(brcmu_dotrev_str); + +#if defined(DEBUG) +/* pretty hex print a pkt buffer chain */ +void brcmu_prpkt(const char *msg, struct sk_buff *p0) +{ + struct sk_buff *p; + + if (msg && (msg[0] != '\0')) + pr_debug("%s:\n", msg); + + for (p = p0; p; p = p->next) + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, p->data, p->len); +} +EXPORT_SYMBOL(brcmu_prpkt); + +void brcmu_dbg_hex_dump(const void *data, size_t size, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + pr_debug("%pV", &vaf); + + va_end(args); + + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, data, size); +} +EXPORT_SYMBOL(brcmu_dbg_hex_dump); + +#endif /* defined(DEBUG) */ |