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Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/rate.c')
-rw-r--r--drivers/net/wireless/brcm80211/brcmsmac/rate.c514
1 files changed, 514 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/rate.c b/drivers/net/wireless/brcm80211/brcmsmac/rate.c
new file mode 100644
index 00000000000..0a0c0ad4f96
--- /dev/null
+++ b/drivers/net/wireless/brcm80211/brcmsmac/rate.c
@@ -0,0 +1,514 @@
+/*
+ * 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.
+ */
+
+#include <brcmu_wifi.h>
+#include <brcmu_utils.h>
+
+#include "d11.h"
+#include "pub.h"
+#include "rate.h"
+
+/*
+ * Rate info per rate: It tells whether a rate is ofdm or not and its phy_rate
+ * value
+ */
+const u8 rate_info[BRCM_MAXRATE + 1] = {
+ /* 0 1 2 3 4 5 6 7 8 9 */
+/* 0 */ 0x00, 0x00, 0x0a, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00,
+/* 10 */ 0x00, 0x37, 0x8b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x00,
+/* 20 */ 0x00, 0x00, 0x6e, 0x00, 0x8a, 0x00, 0x00, 0x00, 0x00, 0x00,
+/* 30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00, 0x00, 0x00,
+/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x89, 0x00,
+/* 50 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+/* 60 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+/* 70 */ 0x00, 0x00, 0x8d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+/* 80 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+/* 90 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00,
+/* 100 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8c
+};
+
+/* rates are in units of Kbps */
+const struct brcms_mcs_info mcs_table[MCS_TABLE_SIZE] = {
+ /* MCS 0: SS 1, MOD: BPSK, CR 1/2 */
+ {6500, 13500, CEIL(6500 * 10, 9), CEIL(13500 * 10, 9), 0x00,
+ BRCM_RATE_6M},
+ /* MCS 1: SS 1, MOD: QPSK, CR 1/2 */
+ {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x08,
+ BRCM_RATE_12M},
+ /* MCS 2: SS 1, MOD: QPSK, CR 3/4 */
+ {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x0A,
+ BRCM_RATE_18M},
+ /* MCS 3: SS 1, MOD: 16QAM, CR 1/2 */
+ {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x10,
+ BRCM_RATE_24M},
+ /* MCS 4: SS 1, MOD: 16QAM, CR 3/4 */
+ {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x12,
+ BRCM_RATE_36M},
+ /* MCS 5: SS 1, MOD: 64QAM, CR 2/3 */
+ {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x19,
+ BRCM_RATE_48M},
+ /* MCS 6: SS 1, MOD: 64QAM, CR 3/4 */
+ {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x1A,
+ BRCM_RATE_54M},
+ /* MCS 7: SS 1, MOD: 64QAM, CR 5/6 */
+ {65000, 135000, CEIL(65000 * 10, 9), CEIL(135000 * 10, 9), 0x1C,
+ BRCM_RATE_54M},
+ /* MCS 8: SS 2, MOD: BPSK, CR 1/2 */
+ {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x40,
+ BRCM_RATE_6M},
+ /* MCS 9: SS 2, MOD: QPSK, CR 1/2 */
+ {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x48,
+ BRCM_RATE_12M},
+ /* MCS 10: SS 2, MOD: QPSK, CR 3/4 */
+ {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x4A,
+ BRCM_RATE_18M},
+ /* MCS 11: SS 2, MOD: 16QAM, CR 1/2 */
+ {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x50,
+ BRCM_RATE_24M},
+ /* MCS 12: SS 2, MOD: 16QAM, CR 3/4 */
+ {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x52,
+ BRCM_RATE_36M},
+ /* MCS 13: SS 2, MOD: 64QAM, CR 2/3 */
+ {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0x59,
+ BRCM_RATE_48M},
+ /* MCS 14: SS 2, MOD: 64QAM, CR 3/4 */
+ {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x5A,
+ BRCM_RATE_54M},
+ /* MCS 15: SS 2, MOD: 64QAM, CR 5/6 */
+ {130000, 270000, CEIL(130000 * 10, 9), CEIL(270000 * 10, 9), 0x5C,
+ BRCM_RATE_54M},
+ /* MCS 16: SS 3, MOD: BPSK, CR 1/2 */
+ {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x80,
+ BRCM_RATE_6M},
+ /* MCS 17: SS 3, MOD: QPSK, CR 1/2 */
+ {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x88,
+ BRCM_RATE_12M},
+ /* MCS 18: SS 3, MOD: QPSK, CR 3/4 */
+ {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x8A,
+ BRCM_RATE_18M},
+ /* MCS 19: SS 3, MOD: 16QAM, CR 1/2 */
+ {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x90,
+ BRCM_RATE_24M},
+ /* MCS 20: SS 3, MOD: 16QAM, CR 3/4 */
+ {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x92,
+ BRCM_RATE_36M},
+ /* MCS 21: SS 3, MOD: 64QAM, CR 2/3 */
+ {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0x99,
+ BRCM_RATE_48M},
+ /* MCS 22: SS 3, MOD: 64QAM, CR 3/4 */
+ {175500, 364500, CEIL(175500 * 10, 9), CEIL(364500 * 10, 9), 0x9A,
+ BRCM_RATE_54M},
+ /* MCS 23: SS 3, MOD: 64QAM, CR 5/6 */
+ {195000, 405000, CEIL(195000 * 10, 9), CEIL(405000 * 10, 9), 0x9B,
+ BRCM_RATE_54M},
+ /* MCS 24: SS 4, MOD: BPSK, CR 1/2 */
+ {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0xC0,
+ BRCM_RATE_6M},
+ /* MCS 25: SS 4, MOD: QPSK, CR 1/2 */
+ {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0xC8,
+ BRCM_RATE_12M},
+ /* MCS 26: SS 4, MOD: QPSK, CR 3/4 */
+ {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0xCA,
+ BRCM_RATE_18M},
+ /* MCS 27: SS 4, MOD: 16QAM, CR 1/2 */
+ {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0xD0,
+ BRCM_RATE_24M},
+ /* MCS 28: SS 4, MOD: 16QAM, CR 3/4 */
+ {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0xD2,
+ BRCM_RATE_36M},
+ /* MCS 29: SS 4, MOD: 64QAM, CR 2/3 */
+ {208000, 432000, CEIL(208000 * 10, 9), CEIL(432000 * 10, 9), 0xD9,
+ BRCM_RATE_48M},
+ /* MCS 30: SS 4, MOD: 64QAM, CR 3/4 */
+ {234000, 486000, CEIL(234000 * 10, 9), CEIL(486000 * 10, 9), 0xDA,
+ BRCM_RATE_54M},
+ /* MCS 31: SS 4, MOD: 64QAM, CR 5/6 */
+ {260000, 540000, CEIL(260000 * 10, 9), CEIL(540000 * 10, 9), 0xDB,
+ BRCM_RATE_54M},
+ /* MCS 32: SS 1, MOD: BPSK, CR 1/2 */
+ {0, 6000, 0, CEIL(6000 * 10, 9), 0x00, BRCM_RATE_6M},
+};
+
+/*
+ * phycfg for legacy OFDM frames: code rate, modulation scheme, spatial streams
+ * Number of spatial streams: always 1 other fields: refer to table 78 of
+ * section 17.3.2.2 of the original .11a standard
+ */
+struct legacy_phycfg {
+ u32 rate_ofdm; /* ofdm mac rate */
+ /* phy ctl byte 3, code rate, modulation type, # of streams */
+ u8 tx_phy_ctl3;
+};
+
+/* Number of legacy_rate_cfg entries in the table */
+#define LEGACY_PHYCFG_TABLE_SIZE 12
+
+/*
+ * In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate
+ * Eventually MIMOPHY would also be converted to this format
+ * 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps
+ */
+static const struct
+legacy_phycfg legacy_phycfg_table[LEGACY_PHYCFG_TABLE_SIZE] = {
+ {BRCM_RATE_1M, 0x00}, /* CCK 1Mbps, data rate 0 */
+ {BRCM_RATE_2M, 0x08}, /* CCK 2Mbps, data rate 1 */
+ {BRCM_RATE_5M5, 0x10}, /* CCK 5.5Mbps, data rate 2 */
+ {BRCM_RATE_11M, 0x18}, /* CCK 11Mbps, data rate 3 */
+ /* OFDM 6Mbps, code rate 1/2, BPSK, 1 spatial stream */
+ {BRCM_RATE_6M, 0x00},
+ /* OFDM 9Mbps, code rate 3/4, BPSK, 1 spatial stream */
+ {BRCM_RATE_9M, 0x02},
+ /* OFDM 12Mbps, code rate 1/2, QPSK, 1 spatial stream */
+ {BRCM_RATE_12M, 0x08},
+ /* OFDM 18Mbps, code rate 3/4, QPSK, 1 spatial stream */
+ {BRCM_RATE_18M, 0x0A},
+ /* OFDM 24Mbps, code rate 1/2, 16-QAM, 1 spatial stream */
+ {BRCM_RATE_24M, 0x10},
+ /* OFDM 36Mbps, code rate 3/4, 16-QAM, 1 spatial stream */
+ {BRCM_RATE_36M, 0x12},
+ /* OFDM 48Mbps, code rate 2/3, 64-QAM, 1 spatial stream */
+ {BRCM_RATE_48M, 0x19},
+ /* OFDM 54Mbps, code rate 3/4, 64-QAM, 1 spatial stream */
+ {BRCM_RATE_54M, 0x1A},
+};
+
+/* Hardware rates (also encodes default basic rates) */
+
+const struct brcms_c_rateset cck_ofdm_mimo_rates = {
+ 12,
+ /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, */
+ { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60,
+ /* 54 Mbps */
+ 0x6c},
+ 0x00,
+ { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+const struct brcms_c_rateset ofdm_mimo_rates = {
+ 8,
+ /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */
+ { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c},
+ 0x00,
+ { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+/* Default ratesets that include MCS32 for 40BW channels */
+static const struct brcms_c_rateset cck_ofdm_40bw_mimo_rates = {
+ 12,
+ /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48 */
+ { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60,
+ /* 54 Mbps */
+ 0x6c},
+ 0x00,
+ { 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+static const struct brcms_c_rateset ofdm_40bw_mimo_rates = {
+ 8,
+ /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */
+ { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c},
+ 0x00,
+ { 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+const struct brcms_c_rateset cck_ofdm_rates = {
+ 12,
+ /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48,*/
+ { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60,
+ /*54 Mbps */
+ 0x6c},
+ 0x00,
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+const struct brcms_c_rateset gphy_legacy_rates = {
+ 4,
+ /* 1b, 2b, 5.5b, 11b Mbps */
+ { 0x82, 0x84, 0x8b, 0x96},
+ 0x00,
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+const struct brcms_c_rateset ofdm_rates = {
+ 8,
+ /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */
+ { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c},
+ 0x00,
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+const struct brcms_c_rateset cck_rates = {
+ 4,
+ /* 1b, 2b, 5.5, 11 Mbps */
+ { 0x82, 0x84, 0x0b, 0x16},
+ 0x00,
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00}
+};
+
+/* check if rateset is valid.
+ * if check_brate is true, rateset without a basic rate is considered NOT valid.
+ */
+static bool brcms_c_rateset_valid(struct brcms_c_rateset *rs, bool check_brate)
+{
+ uint idx;
+
+ if (!rs->count)
+ return false;
+
+ if (!check_brate)
+ return true;
+
+ /* error if no basic rates */
+ for (idx = 0; idx < rs->count; idx++) {
+ if (rs->rates[idx] & BRCMS_RATE_FLAG)
+ return true;
+ }
+ return false;
+}
+
+void brcms_c_rateset_mcs_upd(struct brcms_c_rateset *rs, u8 txstreams)
+{
+ int i;
+ for (i = txstreams; i < MAX_STREAMS_SUPPORTED; i++)
+ rs->mcs[i] = 0;
+}
+
+/*
+ * filter based on hardware rateset, and sort filtered rateset with basic
+ * bit(s) preserved, and check if resulting rateset is valid.
+*/
+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)
+{
+ u8 rateset[BRCM_MAXRATE + 1];
+ u8 r;
+ uint count;
+ uint i;
+
+ memset(rateset, 0, sizeof(rateset));
+ count = rs->count;
+
+ for (i = 0; i < count; i++) {
+ /* mask off "basic rate" bit, BRCMS_RATE_FLAG */
+ r = (int)rs->rates[i] & BRCMS_RATE_MASK;
+ if ((r > BRCM_MAXRATE) || (rate_info[r] == 0))
+ continue;
+ rateset[r] = rs->rates[i]; /* preserve basic bit! */
+ }
+
+ /* fill out the rates in order, looking at only supported rates */
+ count = 0;
+ for (i = 0; i < hw_rs->count; i++) {
+ r = hw_rs->rates[i] & BRCMS_RATE_MASK;
+ if (rateset[r])
+ rs->rates[count++] = rateset[r];
+ }
+
+ rs->count = count;
+
+ /* only set the mcs rate bit if the equivalent hw mcs bit is set */
+ for (i = 0; i < MCSSET_LEN; i++)
+ rs->mcs[i] = (rs->mcs[i] & hw_rs->mcs[i]);
+
+ if (brcms_c_rateset_valid(rs, check_brate))
+ return true;
+ else
+ return false;
+}
+
+/* calculate the rate of a rx'd frame and return it as a ratespec */
+u32 brcms_c_compute_rspec(struct d11rxhdr *rxh, u8 *plcp)
+{
+ int phy_type;
+ u32 rspec = PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT;
+
+ phy_type =
+ ((rxh->RxChan & RXS_CHAN_PHYTYPE_MASK) >> RXS_CHAN_PHYTYPE_SHIFT);
+
+ if ((phy_type == PHY_TYPE_N) || (phy_type == PHY_TYPE_SSN) ||
+ (phy_type == PHY_TYPE_LCN) || (phy_type == PHY_TYPE_HT)) {
+ switch (rxh->PhyRxStatus_0 & PRXS0_FT_MASK) {
+ case PRXS0_CCK:
+ rspec =
+ cck_phy2mac_rate(
+ ((struct cck_phy_hdr *) plcp)->signal);
+ break;
+ case PRXS0_OFDM:
+ rspec =
+ ofdm_phy2mac_rate(
+ ((struct ofdm_phy_hdr *) plcp)->rlpt[0]);
+ break;
+ case PRXS0_PREN:
+ rspec = (plcp[0] & MIMO_PLCP_MCS_MASK) | RSPEC_MIMORATE;
+ if (plcp[0] & MIMO_PLCP_40MHZ) {
+ /* indicate rspec is for 40 MHz mode */
+ rspec &= ~RSPEC_BW_MASK;
+ rspec |= (PHY_TXC1_BW_40MHZ << RSPEC_BW_SHIFT);
+ }
+ break;
+ case PRXS0_STDN:
+ /* fallthru */
+ default:
+ /* not supported, error condition */
+ break;
+ }
+ if (plcp3_issgi(plcp[3]))
+ rspec |= RSPEC_SHORT_GI;
+ } else
+ if ((phy_type == PHY_TYPE_A) || (rxh->PhyRxStatus_0 & PRXS0_OFDM))
+ rspec = ofdm_phy2mac_rate(
+ ((struct ofdm_phy_hdr *) plcp)->rlpt[0]);
+ else
+ rspec = cck_phy2mac_rate(
+ ((struct cck_phy_hdr *) plcp)->signal);
+
+ return rspec;
+}
+
+/* copy rateset src to dst as-is (no masking or sorting) */
+void brcms_c_rateset_copy(const struct brcms_c_rateset *src,
+ struct brcms_c_rateset *dst)
+{
+ memcpy(dst, src, sizeof(struct brcms_c_rateset));
+}
+
+/*
+ * Copy and selectively filter one rateset to another.
+ * 'basic_only' means only copy basic rates.
+ * 'rates' indicates cck (11b) and ofdm rates combinations.
+ * - 0: cck and ofdm
+ * - 1: cck only
+ * - 2: ofdm only
+ * 'xmask' is the copy mask (typically 0x7f or 0xff).
+ */
+void
+brcms_c_rateset_filter(struct brcms_c_rateset *src, struct brcms_c_rateset *dst,
+ bool basic_only, u8 rates, uint xmask, bool mcsallow)
+{
+ uint i;
+ uint r;
+ uint count;
+
+ count = 0;
+ for (i = 0; i < src->count; i++) {
+ r = src->rates[i];
+ if (basic_only && !(r & BRCMS_RATE_FLAG))
+ continue;
+ if (rates == BRCMS_RATES_CCK &&
+ is_ofdm_rate((r & BRCMS_RATE_MASK)))
+ continue;
+ if (rates == BRCMS_RATES_OFDM &&
+ is_cck_rate((r & BRCMS_RATE_MASK)))
+ continue;
+ dst->rates[count++] = r & xmask;
+ }
+ dst->count = count;
+ dst->htphy_membership = src->htphy_membership;
+
+ if (mcsallow && rates != BRCMS_RATES_CCK)
+ memcpy(&dst->mcs[0], &src->mcs[0], MCSSET_LEN);
+ else
+ brcms_c_rateset_mcs_clear(dst);
+}
+
+/* select rateset for a given phy_type and bandtype and filter it, sort it
+ * and fill rs_tgt with result
+ */
+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)
+{
+ const struct brcms_c_rateset *rs_dflt;
+ struct brcms_c_rateset rs_sel;
+ if ((PHYTYPE_IS(phy_type, PHY_TYPE_HT)) ||
+ (PHYTYPE_IS(phy_type, PHY_TYPE_N)) ||
+ (PHYTYPE_IS(phy_type, PHY_TYPE_LCN)) ||
+ (PHYTYPE_IS(phy_type, PHY_TYPE_SSN))) {
+ if (bandtype == BRCM_BAND_5G)
+ rs_dflt = (bw == BRCMS_20_MHZ ?
+ &ofdm_mimo_rates : &ofdm_40bw_mimo_rates);
+ else
+ rs_dflt = (bw == BRCMS_20_MHZ ?
+ &cck_ofdm_mimo_rates :
+ &cck_ofdm_40bw_mimo_rates);
+ } else if (PHYTYPE_IS(phy_type, PHY_TYPE_LP)) {
+ rs_dflt = (bandtype == BRCM_BAND_5G) ?
+ &ofdm_rates : &cck_ofdm_rates;
+ } else if (PHYTYPE_IS(phy_type, PHY_TYPE_A)) {
+ rs_dflt = &ofdm_rates;
+ } else if (PHYTYPE_IS(phy_type, PHY_TYPE_G)) {
+ rs_dflt = &cck_ofdm_rates;
+ } else {
+ /* should not happen, error condition */
+ rs_dflt = &cck_rates; /* force cck */
+ }
+
+ /* if hw rateset is not supplied, assign selected rateset to it */
+ if (!rs_hw)
+ rs_hw = rs_dflt;
+
+ brcms_c_rateset_copy(rs_dflt, &rs_sel);
+ brcms_c_rateset_mcs_upd(&rs_sel, txstreams);
+ brcms_c_rateset_filter(&rs_sel, rs_tgt, false,
+ cck_only ? BRCMS_RATES_CCK : BRCMS_RATES_CCK_OFDM,
+ rate_mask, mcsallow);
+ brcms_c_rate_hwrs_filter_sort_validate(rs_tgt, rs_hw, false,
+ mcsallow ? txstreams : 1);
+}
+
+s16 brcms_c_rate_legacy_phyctl(uint rate)
+{
+ uint i;
+ for (i = 0; i < LEGACY_PHYCFG_TABLE_SIZE; i++)
+ if (rate == legacy_phycfg_table[i].rate_ofdm)
+ return legacy_phycfg_table[i].tx_phy_ctl3;
+
+ return -1;
+}
+
+void brcms_c_rateset_mcs_clear(struct brcms_c_rateset *rateset)
+{
+ uint i;
+ for (i = 0; i < MCSSET_LEN; i++)
+ rateset->mcs[i] = 0;
+}
+
+void brcms_c_rateset_mcs_build(struct brcms_c_rateset *rateset, u8 txstreams)
+{
+ memcpy(&rateset->mcs[0], &cck_ofdm_mimo_rates.mcs[0], MCSSET_LEN);
+ brcms_c_rateset_mcs_upd(rateset, txstreams);
+}
+
+/* Based on bandwidth passed, allow/disallow MCS 32 in the rateset */
+void brcms_c_rateset_bw_mcs_filter(struct brcms_c_rateset *rateset, u8 bw)
+{
+ if (bw == BRCMS_40_MHZ)
+ setbit(rateset->mcs, 32);
+ else
+ clrbit(rateset->mcs, 32);
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 02:14:52 +0000