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-rw-r--r--drivers/net/wireless/realtek/rtw89/acpi.c342
-rw-r--r--drivers/net/wireless/realtek/rtw89/acpi.h61
-rw-r--r--drivers/net/wireless/realtek/rtw89/core.h2
3 files changed, 404 insertions, 1 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/acpi.c b/drivers/net/wireless/realtek/rtw89/acpi.c
index 97b069062ec8..b937832b0f7a 100644
--- a/drivers/net/wireless/realtek/rtw89/acpi.c
+++ b/drivers/net/wireless/realtek/rtw89/acpi.c
@@ -365,8 +365,348 @@ enum rtw89_band rtw89_acpi_sar_subband_to_band(struct rtw89_dev *rtwdev,
}
}
+static u8 rtw89_acpi_sar_rfpath_to_hp_antidx(enum rtw89_rf_path rfpath)
+{
+ switch (rfpath) {
+ default:
+ case RF_PATH_B:
+ return 0;
+ case RF_PATH_A:
+ return 1;
+ }
+}
+
+static u8 rtw89_acpi_sar_rfpath_to_rt_antidx(enum rtw89_rf_path rfpath)
+{
+ switch (rfpath) {
+ default:
+ case RF_PATH_A:
+ return 0;
+ case RF_PATH_B:
+ return 1;
+ }
+}
+
+static s16 rtw89_acpi_sar_normalize_hp_val(u8 v)
+{
+ static const u8 bias = 10;
+ static const u8 fct = 1;
+ u16 res;
+
+ BUILD_BUG_ON(fct > TXPWR_FACTOR_OF_RTW89_ACPI_SAR);
+
+ res = (bias << TXPWR_FACTOR_OF_RTW89_ACPI_SAR) +
+ (v << (TXPWR_FACTOR_OF_RTW89_ACPI_SAR - fct));
+
+ return min_t(s32, res, MAX_VAL_OF_RTW89_ACPI_SAR);
+}
+
+static s16 rtw89_acpi_sar_normalize_rt_val(u8 v)
+{
+ static const u8 fct = 3;
+ u16 res;
+
+ BUILD_BUG_ON(fct > TXPWR_FACTOR_OF_RTW89_ACPI_SAR);
+
+ res = v << (TXPWR_FACTOR_OF_RTW89_ACPI_SAR - fct);
+
+ return min_t(s32, res, MAX_VAL_OF_RTW89_ACPI_SAR);
+}
+
+static
+void rtw89_acpi_sar_load_std_legacy(struct rtw89_dev *rtwdev,
+ const struct rtw89_acpi_sar_recognition *rec,
+ const void *content,
+ struct rtw89_sar_entry_from_acpi *ent)
+{
+ const struct rtw89_acpi_sar_std_legacy *ptr = content;
+ enum rtw89_acpi_sar_subband subband;
+ enum rtw89_rf_path path;
+
+ for (subband = 0; subband < NUM_OF_RTW89_ACPI_SAR_SUBBAND; subband++) {
+ for (path = 0; path < NUM_OF_RTW89_ACPI_SAR_RF_PATH; path++) {
+ u8 antidx = rec->rfpath_to_antidx(path);
+
+ if (subband < RTW89_ACPI_SAR_SUBBAND_NR_LEGACY)
+ ent->v[subband][path] =
+ rec->normalize(ptr->v[antidx][subband]);
+ else
+ ent->v[subband][path] = MAX_VAL_OF_RTW89_ACPI_SAR;
+ }
+ }
+}
+
+static
+void rtw89_acpi_sar_load_std_has_6ghz(struct rtw89_dev *rtwdev,
+ const struct rtw89_acpi_sar_recognition *rec,
+ const void *content,
+ struct rtw89_sar_entry_from_acpi *ent)
+{
+ const struct rtw89_acpi_sar_std_has_6ghz *ptr = content;
+ enum rtw89_acpi_sar_subband subband;
+ enum rtw89_rf_path path;
+
+ BUILD_BUG_ON(RTW89_ACPI_SAR_SUBBAND_NR_HAS_6GHZ != NUM_OF_RTW89_ACPI_SAR_SUBBAND);
+
+ for (subband = 0; subband < NUM_OF_RTW89_ACPI_SAR_SUBBAND; subband++) {
+ for (path = 0; path < NUM_OF_RTW89_ACPI_SAR_RF_PATH; path++) {
+ u8 antidx = rec->rfpath_to_antidx(path);
+
+ ent->v[subband][path] = rec->normalize(ptr->v[antidx][subband]);
+ }
+ }
+}
+
+static
+void rtw89_acpi_sar_load_sml_legacy(struct rtw89_dev *rtwdev,
+ const struct rtw89_acpi_sar_recognition *rec,
+ const void *content,
+ struct rtw89_sar_entry_from_acpi *ent)
+{
+ const struct rtw89_acpi_sar_sml_legacy *ptr = content;
+ enum rtw89_acpi_sar_subband subband;
+ enum rtw89_rf_path path;
+
+ for (subband = 0; subband < NUM_OF_RTW89_ACPI_SAR_SUBBAND; subband++) {
+ for (path = 0; path < NUM_OF_RTW89_ACPI_SAR_RF_PATH; path++) {
+ u8 antidx = rec->rfpath_to_antidx(path);
+
+ if (subband < RTW89_ACPI_SAR_SUBBAND_NR_LEGACY)
+ ent->v[subband][path] =
+ rec->normalize(ptr->v[antidx][subband]);
+ else
+ ent->v[subband][path] = MAX_VAL_OF_RTW89_ACPI_SAR;
+ }
+ }
+}
+
+static
+void rtw89_acpi_sar_load_sml_has_6ghz(struct rtw89_dev *rtwdev,
+ const struct rtw89_acpi_sar_recognition *rec,
+ const void *content,
+ struct rtw89_sar_entry_from_acpi *ent)
+{
+ const struct rtw89_acpi_sar_sml_has_6ghz *ptr = content;
+ enum rtw89_acpi_sar_subband subband;
+ enum rtw89_rf_path path;
+
+ BUILD_BUG_ON(RTW89_ACPI_SAR_SUBBAND_NR_HAS_6GHZ != NUM_OF_RTW89_ACPI_SAR_SUBBAND);
+
+ for (subband = 0; subband < NUM_OF_RTW89_ACPI_SAR_SUBBAND; subband++) {
+ for (path = 0; path < NUM_OF_RTW89_ACPI_SAR_RF_PATH; path++) {
+ u8 antidx = rec->rfpath_to_antidx(path);
+
+ ent->v[subband][path] = rec->normalize(ptr->v[antidx][subband]);
+ }
+ }
+}
+
+static const struct rtw89_acpi_sar_recognition rtw89_acpi_sar_recs[] = {
+ {
+ .id = {
+ .cid = RTW89_ACPI_SAR_CID_HP,
+ .rev = RTW89_ACPI_SAR_REV_LEGACY,
+ .size = RTW89_ACPI_SAR_SIZE_OF(std_legacy),
+ },
+
+ .rfpath_to_antidx = rtw89_acpi_sar_rfpath_to_hp_antidx,
+ .normalize = rtw89_acpi_sar_normalize_hp_val,
+ .load = rtw89_acpi_sar_load_std_legacy,
+ },
+ {
+ .id = {
+ .cid = RTW89_ACPI_SAR_CID_HP,
+ .rev = RTW89_ACPI_SAR_REV_HAS_6GHZ,
+ .size = RTW89_ACPI_SAR_SIZE_OF(std_has_6ghz),
+ },
+
+ .rfpath_to_antidx = rtw89_acpi_sar_rfpath_to_hp_antidx,
+ .normalize = rtw89_acpi_sar_normalize_hp_val,
+ .load = rtw89_acpi_sar_load_std_has_6ghz,
+ },
+ {
+ .id = {
+ .cid = RTW89_ACPI_SAR_CID_RT,
+ .rev = RTW89_ACPI_SAR_REV_LEGACY,
+ .size = RTW89_ACPI_SAR_SIZE_OF(std_legacy),
+ },
+
+ .rfpath_to_antidx = rtw89_acpi_sar_rfpath_to_rt_antidx,
+ .normalize = rtw89_acpi_sar_normalize_rt_val,
+ .load = rtw89_acpi_sar_load_std_legacy,
+ },
+ {
+ .id = {
+ .cid = RTW89_ACPI_SAR_CID_RT,
+ .rev = RTW89_ACPI_SAR_REV_HAS_6GHZ,
+ .size = RTW89_ACPI_SAR_SIZE_OF(std_has_6ghz),
+ },
+
+ .rfpath_to_antidx = rtw89_acpi_sar_rfpath_to_rt_antidx,
+ .normalize = rtw89_acpi_sar_normalize_rt_val,
+ .load = rtw89_acpi_sar_load_std_has_6ghz,
+ },
+ {
+ .id = {
+ .cid = RTW89_ACPI_SAR_CID_RT,
+ .rev = RTW89_ACPI_SAR_REV_LEGACY,
+ .size = RTW89_ACPI_SAR_SIZE_OF(sml_legacy),
+ },
+
+ .rfpath_to_antidx = rtw89_acpi_sar_rfpath_to_rt_antidx,
+ .normalize = rtw89_acpi_sar_normalize_rt_val,
+ .load = rtw89_acpi_sar_load_sml_legacy,
+ },
+ {
+ .id = {
+ .cid = RTW89_ACPI_SAR_CID_RT,
+ .rev = RTW89_ACPI_SAR_REV_HAS_6GHZ,
+ .size = RTW89_ACPI_SAR_SIZE_OF(sml_has_6ghz),
+ },
+
+ .rfpath_to_antidx = rtw89_acpi_sar_rfpath_to_rt_antidx,
+ .normalize = rtw89_acpi_sar_normalize_rt_val,
+ .load = rtw89_acpi_sar_load_sml_has_6ghz,
+ },
+};
+
+struct rtw89_acpi_sar_rec_parm {
+ u32 pld_len;
+ u8 tbl_cnt;
+ u16 cid;
+ u8 rev;
+};
+
+static const struct rtw89_acpi_sar_recognition *
+rtw89_acpi_sar_recognize(struct rtw89_dev *rtwdev,
+ const struct rtw89_acpi_sar_rec_parm *parm)
+{
+ const u32 tbl_len = parm->pld_len / parm->tbl_cnt;
+ const struct rtw89_acpi_sar_recognition *rec;
+ struct rtw89_acpi_sar_identifier id = {};
+
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI,
+ "%s: cid %u, rev %u, tbl len %u, tbl cnt %u\n",
+ __func__, parm->cid, parm->rev, tbl_len, parm->tbl_cnt);
+
+ if (unlikely(parm->pld_len % parm->tbl_cnt)) {
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "invalid pld len %u\n",
+ parm->pld_len);
+ return NULL;
+ }
+
+ if (unlikely(tbl_len > RTW89_ACPI_SAR_SIZE_MAX)) {
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "invalid tbl len %u\n",
+ tbl_len);
+ return NULL;
+ }
+
+ if (unlikely(parm->tbl_cnt > MAX_NUM_OF_RTW89_ACPI_SAR_TBL)) {
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "invalid tbl cnt %u\n",
+ parm->tbl_cnt);
+ return NULL;
+ }
+
+ switch (parm->cid) {
+ case RTW89_ACPI_SAR_CID_HP:
+ case RTW89_ACPI_SAR_CID_RT:
+ id.cid = parm->cid;
+ break;
+ default:
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "invalid cid 0x%x\n",
+ parm->cid);
+ return NULL;
+ }
+
+ switch (parm->rev) {
+ case RTW89_ACPI_SAR_REV_LEGACY:
+ case RTW89_ACPI_SAR_REV_HAS_6GHZ:
+ id.rev = parm->rev;
+ break;
+ default:
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "invalid rev %u\n",
+ parm->rev);
+ return NULL;
+ }
+
+ id.size = tbl_len;
+ for (unsigned int i = 0; i < ARRAY_SIZE(rtw89_acpi_sar_recs); i++) {
+ rec = &rtw89_acpi_sar_recs[i];
+ if (memcmp(&rec->id, &id, sizeof(rec->id)) == 0)
+ return rec;
+ }
+
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "failed to recognize\n");
+ return NULL;
+}
+
+static const struct rtw89_acpi_sar_recognition *
+rtw89_acpi_evaluate_static_sar(struct rtw89_dev *rtwdev,
+ struct rtw89_sar_cfg_acpi *cfg)
+{
+ const struct rtw89_acpi_sar_recognition *rec = NULL;
+ const struct rtw89_acpi_static_sar_hdr *hdr;
+ struct rtw89_sar_entry_from_acpi tmp = {};
+ struct rtw89_acpi_sar_rec_parm parm = {};
+ struct rtw89_sar_table_from_acpi *tbl;
+ const struct rtw89_acpi_data *data;
+ u32 len;
+
+ data = rtw89_acpi_evaluate_method(rtwdev, RTW89_ACPI_METHOD_STATIC_SAR);
+ if (!data)
+ return NULL;
+
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "acpi load static sar\n");
+
+ len = data->len;
+ if (len <= sizeof(*hdr)) {
+ rtw89_debug(rtwdev, RTW89_DBG_ACPI, "invalid buf len %u\n", len);
+ goto out;
+ }
+
+ hdr = (typeof(hdr))data->buf;
+
+ parm.cid = le16_to_cpu(hdr->cid);
+ parm.rev = hdr->rev;
+ parm.tbl_cnt = 1;
+ parm.pld_len = len - sizeof(*hdr);
+
+ rec = rtw89_acpi_sar_recognize(rtwdev, &parm);
+ if (!rec)
+ goto out;
+
+ rec->load(rtwdev, rec, hdr->content, &tmp);
+
+ tbl = &cfg->tables[0];
+ for (u8 regd = 0; regd < RTW89_REGD_NUM; regd++)
+ tbl->entries[regd] = tmp;
+
+ cfg->valid_num = 1;
+
+out:
+ kfree(data);
+ return rec;
+}
+
int rtw89_acpi_evaluate_sar(struct rtw89_dev *rtwdev,
struct rtw89_sar_cfg_acpi *cfg)
{
- return -ENOENT;
+ const struct rtw89_acpi_sar_recognition *rec;
+
+ rec = rtw89_acpi_evaluate_static_sar(rtwdev, cfg);
+ if (!rec)
+ return -ENOENT;
+
+ switch (rec->id.cid) {
+ case RTW89_ACPI_SAR_CID_HP:
+ cfg->downgrade_2tx = 3 << TXPWR_FACTOR_OF_RTW89_ACPI_SAR;
+ break;
+ case RTW89_ACPI_SAR_CID_RT:
+ cfg->downgrade_2tx = 0;
+ break;
+ default:
+ return -EFAULT;
+ }
+
+ return 0;
}
diff --git a/drivers/net/wireless/realtek/rtw89/acpi.h b/drivers/net/wireless/realtek/rtw89/acpi.h
index 1f5d732c33c0..68a3433dd41e 100644
--- a/drivers/net/wireless/realtek/rtw89/acpi.h
+++ b/drivers/net/wireless/realtek/rtw89/acpi.h
@@ -75,6 +75,67 @@ struct rtw89_acpi_rtag_result {
u8 ant_gain_table[RTW89_ANT_GAIN_CHAIN_NUM][RTW89_ANT_GAIN_SUBBAND_NR];
} __packed;
+enum rtw89_acpi_sar_cid {
+ RTW89_ACPI_SAR_CID_HP = 0x5048,
+ RTW89_ACPI_SAR_CID_RT = 0x5452,
+};
+
+enum rtw89_acpi_sar_rev {
+ RTW89_ACPI_SAR_REV_LEGACY = 1,
+ RTW89_ACPI_SAR_REV_HAS_6GHZ = 2,
+};
+
+#define RTW89_ACPI_SAR_ANT_NR_STD 4
+#define RTW89_ACPI_SAR_ANT_NR_SML 2
+
+#define RTW89_ACPI_METHOD_STATIC_SAR "WRDS"
+
+struct rtw89_acpi_sar_std_legacy {
+ u8 v[RTW89_ACPI_SAR_ANT_NR_STD][RTW89_ACPI_SAR_SUBBAND_NR_LEGACY];
+} __packed;
+
+struct rtw89_acpi_sar_std_has_6ghz {
+ u8 v[RTW89_ACPI_SAR_ANT_NR_STD][RTW89_ACPI_SAR_SUBBAND_NR_HAS_6GHZ];
+} __packed;
+
+struct rtw89_acpi_sar_sml_legacy {
+ u8 v[RTW89_ACPI_SAR_ANT_NR_SML][RTW89_ACPI_SAR_SUBBAND_NR_LEGACY];
+} __packed;
+
+struct rtw89_acpi_sar_sml_has_6ghz {
+ u8 v[RTW89_ACPI_SAR_ANT_NR_SML][RTW89_ACPI_SAR_SUBBAND_NR_HAS_6GHZ];
+} __packed;
+
+struct rtw89_acpi_static_sar_hdr {
+ __le16 cid;
+ u8 rev;
+ u8 content[];
+} __packed;
+
+struct rtw89_acpi_sar_identifier {
+ enum rtw89_acpi_sar_cid cid;
+ enum rtw89_acpi_sar_rev rev;
+ u8 size;
+};
+
+/* for rtw89_acpi_sar_identifier::size */
+#define RTW89_ACPI_SAR_SIZE_MAX U8_MAX
+#define RTW89_ACPI_SAR_SIZE_OF(type) \
+ (BUILD_BUG_ON_ZERO(sizeof(struct rtw89_acpi_sar_ ## type) > \
+ RTW89_ACPI_SAR_SIZE_MAX) + \
+ sizeof(struct rtw89_acpi_sar_ ## type))
+
+struct rtw89_acpi_sar_recognition {
+ struct rtw89_acpi_sar_identifier id;
+
+ u8 (*rfpath_to_antidx)(enum rtw89_rf_path rfpath);
+ s16 (*normalize)(u8 v);
+ void (*load)(struct rtw89_dev *rtwdev,
+ const struct rtw89_acpi_sar_recognition *rec,
+ const void *content,
+ struct rtw89_sar_entry_from_acpi *ent);
+};
+
enum rtw89_acpi_sar_subband rtw89_acpi_sar_get_subband(struct rtw89_dev *rtwdev,
u32 center_freq);
enum rtw89_band rtw89_acpi_sar_subband_to_band(struct rtw89_dev *rtwdev,
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index de0734c44985..f36546505b0d 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -4645,6 +4645,8 @@ enum rtw89_acpi_sar_subband {
RTW89_ACPI_SAR_6GHZ_SUBBAND_8, /* U-NII-8 */
NUM_OF_RTW89_ACPI_SAR_SUBBAND,
+ RTW89_ACPI_SAR_SUBBAND_NR_LEGACY = RTW89_ACPI_SAR_5GHZ_SUBBAND_3_4 + 1,
+ RTW89_ACPI_SAR_SUBBAND_NR_HAS_6GHZ = RTW89_ACPI_SAR_6GHZ_SUBBAND_8 + 1,
};
#define TXPWR_FACTOR_OF_RTW89_ACPI_SAR 3 /* unit: 0.125 dBm */
generated by cgit (git 2.34.1) at 2026-01-06 04:50:49 +0000