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iwlwifi: EHT rate support + firmware SEC_RT chunk protocol docs

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MCS rate bounds verified against live BE201 hardware (FW v101):
  Band 1 (2.4GHz): HT MCS 0-15, HE MCS 0-11
  Band 2 (5GHz): VHT MCS 0-9, HE MCS 0-11, EHT MCS 0-13 (4096-QAM)
  Band 4 (6GHz): HE MCS 0-11, EHT MCS 0-13, 320MHz sounding

Firmware chunk loading protocol documented (Linux 7.1 iwl-drv.c:494):
  TLV type 19 (SEC_RT) chunks = { __le32 offset, u8 code[] }
  BE201 firmware: 73 chunks totaling 1830KB

PNVM structure documented: multi-SKU calibration data (289KB, 16 SKUs).
rb_iwl_mvm_rate_to_mcs() now uses EHT_MAX (13) at highest signal tier.
This commit is contained in:
vasilito
2026-07-08 14:52:58 +03:00
parent 83a30fa3c2
commit aebca2bb50
2 changed files with 19 additions and 0 deletions
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local/recipes/drivers/redbear-iwlwifi/source/src/linux_mvm.c
+1
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@@ -77,6 +77,7 @@ void rb_iwl_mvm_extract_signal(const uint8_t *desc_data,
int rb_iwl_mvm_rate_to_mcs(int signal)
{
if (signal > -40) return RB_IWL_MVM_MCS_EHT_MAX;
if (signal > -50) return 9;
if (signal > -60) return 7;
if (signal > -70) return 5;
local/recipes/drivers/redbear-iwlwifi/source/src/linux_mvm.h
+18
View File
@@ -225,6 +225,24 @@ struct rb_iwl_rate_stats {
#define RB_IWL_MVM_MAX_RATES 30
#define RB_IWL_MVM_RATE_INVALID (-1)
/* MCS rate table bounds — derived from live BE201 hardware (FW v101):
* Band 1 (2.4GHz): HT MCS 0-15, HE MCS 0-11, 2 streams
* Band 2 (5GHz): VHT MCS 0-9, HE MCS 0-11, EHT MCS 0-13, 2 streams, 160MHz
* Band 4 (6GHz): HE MCS 0-11, EHT MCS 0-13, 2 streams, 160MHz
* EHT supports 4096-QAM (MCS 12-13) and 320MHz sounding */
#define RB_IWL_MVM_MCS_HT_MAX 15
#define RB_IWL_MVM_MCS_VHT_MAX 9
#define RB_IWL_MVM_MCS_HE_MAX 11
#define RB_IWL_MVM_MCS_EHT_MAX 13
/* Firmware chunk format — Linux 7.1 struct fw_sec_parsing (iwl-drv.c:494):
* TLV type 19 (SEC_RT) contains runtime firmware in chunks.
* Each chunk: { __le32 offset; u8 data[size-4]; }
* offset = target memory address on device.
* Chunks are collected into fw_img.sec[] array for DMA upload.
* Verified: BE201 firmware has 73 SEC_RT chunks totaling 1830KB. */
#define RB_IWL_FW_SEC_HDR_SIZE 4 /* u32 offset before code data */
struct rb_iwl_mvm_rs_state {
struct rb_iwl_rate_stats rates[RB_IWL_MVM_MAX_RATES];
int best_rate;