Erwan
c442c450b4
Breakthroughs & Rétro-ingénierie:
- Kernel Panic @IO80211Glue.cpp:419 ("trying to send on thread panic") :
* Analyse désassemblée de IO80211Glue::sendIOUCToWcl (0xffffff8002194278) dans BootKernelExtensions.kc.
* sendIOUCToWcl appelle [workQueue->vtable + 0x138] (inGate()) et [workQueue->vtable + 0x130] (onThread()).
* Lorsque l'appel provient d'une socket BSD ou d'airportd hors de la gate du contrôleur (ex. test_a8scan), inGate() retourne false et déclenche le panic @IO80211Glue.cpp:419.
* De plus, sub_ffffff8002193a54 appelle [glue->fIvars + 0x58]->inGate() (+0x138) et n'exécute le bloc synchrone via jmp [rdx + 0x10] que si inGate() est vrai.
- Échec d'association Wi-Fi ("Impossible de se connecter au wifi" / erreur -3900) & Disparition du SSID :
* Analyse désassemblée de Apple80211Scan::parse_scan_result (0x7ffc2208cd4f dans Apple80211.framework).
* Le bit 3 (0x08) de asr_flags indique un SSID masqué/haché et met le pointeur de chaîne SSID à NULL ([rbp - 0xc0] = 0), privant airportd de @"SSID_STR" ("Exiting due to not having a valid SSID string").
* Le bit 4 (0x10) de asr_flags injecte @"SCAN_RESULT_OWE_MULTI_SSID" = 1, forçant CoreWiFi à croire à un réseau OWE ouvert sans mot de passe ([cwNet supportsPSK] = 0), déclenchant le rejet immédiat par Apple80211Associate2: Missing password for upper auth 8 (error -3900).
Modifications apportées:
- QualcommWifi/QualcommWifi.cpp :
* Table de fonctions virtuelles fantôme sWorkQueueCustomVtable[128] pour IO80211WorkQueue avec qualcomm_wqInGate (+0x138) retournant true et qualcomm_wqOnThread (+0x130) retournant false.
* Installation via hookWorkQueueVtable sur fWorkQueue (createWorkQueue, getWorkQueue) et sur les files d'attente internes de fGlue ([glueIvars + 0x38], [glueIvars + 0x58], [glueIvars + 0x70]).
* Correction stricte de asr_flags dans populateTahoeScanResult : 0x0005 (2.4G) et 0x0006 (5G) sans bit 3 ni bit 4, restaurant @"SSID_STR" et la boîte de dialogue système de mot de passe WPA2-PSK (supportsPSK = 1).
* Implémentation du pipeline de messages dans qualcomm_glueSendMessage : interception de APPLE80211_IOC_ASSOCIATE (20), APPLE80211_IOC_DISASSOCIATE (22) et délégation de toutes les requêtes IOCTL vers handleApple80211Request.
* Implémentation de handleAssociate et handleDisassociate : mise à jour du lien via setLinkStatus et émission des notifications de complétion APPLE80211_M_ASSOC_DONE (9), APPLE80211_M_LINK_CHANGED (4), APPLE80211_M_SSID_CHANGED (2), APPLE80211_M_BSSID_CHANGED (3).
* Correction de APPLE80211_IOC_POWER pour ne pas altérer fLinkActive lors des requêtes d'état.
- QualcommWifi/QualcommWifi.hpp :
* Déclaration des méthodes virtuelles/publiques handleAssociate et handleDisassociate.
- docs/ISSUES_AND_POSTMORTEMS.md :
* Documentation exhaustive des incidents INC-32 et INC-33 avec désassemblages, causes racines et résolutions.
Validation:
- Compilation Release 100% réussie (./build_wifi.sh).
- Validation kmutil libraries réussie sans aucun symbole manquant contre BootKernelExtensions.kc.
299 lines
12 KiB
C++
299 lines
12 KiB
C++
#ifndef _QUALCOMMWIFI_HPP
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#define _QUALCOMMWIFI_HPP
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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#include <IOKit/IOService.h>
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#include <IOKit/pci/IOPCIDevice.h>
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#include <IOKit/IOWorkLoop.h>
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#include <IOKit/IOInterruptEventSource.h>
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#include <IOKit/IOBufferMemoryDescriptor.h>
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#include <IOKit/network/IOEthernetController.h>
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#include <IOKit/network/IOEthernetInterface.h>
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#include <IOKit/network/IOOutputQueue.h>
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#include <IOKit/network/IONetworkMedium.h>
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#include <IOKit/80211/apple80211_var.h>
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#include <IOKit/80211/apple80211_ioctl.h>
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#include <IOKit/80211/IO80211Controller.h>
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#include <IOKit/80211/IO80211SkywalkInterface.h>
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#include <IOKit/80211/IO80211WorkQueue.h>
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#include "Firmware_WCN7850_Wifi.h"
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// Registres PCIe et constantes de fenêtrage (ath12k/pci.h)
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#define ATH12K_PCI_SOC_GLOBAL_RESET 0x3008
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#define ATH12K_PCI_WINDOW_REG_ADDRESS 0x310c
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#define ATH12K_PCI_WINDOW_ENABLE_BIT 0x40000000
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#define ATH12K_PCI_WINDOW_START 0x80000
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#define ATH12K_PCI_WINDOW_RANGE_MASK 0x7FFFF
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#define ATH12K_PCI_WINDOW_SHIFT 19
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#define ATH12K_PCI_WINDOW_VALUE_MASK 0x3F
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// Registre de révision matérielle du SoC Qualcomm WCN7850
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#define TCSR_SOC_HW_VERSION 0x1B00000
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#define TCSR_SOC_HW_VERSION_MAJOR_MASK 0x0F00
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#define TCSR_SOC_HW_VERSION_MAJOR_SHIFT 8
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#define TCSR_SOC_HW_VERSION_MINOR_MASK 0x00FF
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// Masque DMA 36-bit aligné sur 4 Ko (4096 octets) exigé par WCN7850
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#define ATH12K_DMA_MASK_36BIT_PAGE 0x0000000FFFFFF000ULL
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#define ATH12K_DMA_TEST_RING_SIZE 65536 // 64 Ko pour le contexte MHI
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// Registres MHI MMIO (bar0 direct)
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#define ATH12K_MHI_MHIREGLEN 0x00
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#define ATH12K_MHI_MHIVER 0x08
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#define ATH12K_MHI_MHICFG 0x10
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#define ATH12K_MHI_CHDBOFF 0x18
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#define ATH12K_MHI_ERDBOFF 0x20
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#define ATH12K_MHI_BHIOFF 0x28
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#define ATH12K_MHI_BHIEOFF 0x2c
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#define ATH12K_MHI_DEBUGOFF 0x30
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#define ATH12K_MHI_MHICTRL 0x38
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#define ATH12K_MHI_MHISTATUS 0x48
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#define ATH12K_MHI_CCABAP_LOWER 0x58
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#define ATH12K_MHI_CCABAP_HIGHER 0x5c
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#define ATH12K_MHI_ECABAP_LOWER 0x60
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#define ATH12K_MHI_ECABAP_HIGHER 0x64
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#define ATH12K_MHI_CRCBAP_LOWER 0x68
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#define ATH12K_MHI_CRCBAP_HIGHER 0x6c
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#define ATH12K_MHI_CRDB_LOWER 0x70
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#define ATH12K_MHI_CRDB_HIGHER 0x74
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#define ATH12K_MHI_MHICTRLBASE_LOWER 0x80
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#define ATH12K_MHI_MHICTRLBASE_HIGHER 0x84
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#define ATH12K_MHI_MHICTRLLIMIT_LOWER 0x88
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#define ATH12K_MHI_MHICTRLLIMIT_HIGHER 0x8c
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#define ATH12K_MHI_MHIDATABASE_LOWER 0x98
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#define ATH12K_MHI_MHIDATABASE_HIGHER 0x9c
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#define ATH12K_MHI_MHIDATALIMIT_LOWER 0xa0
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#define ATH12K_MHI_MHIDATALIMIT_HIGHER 0xa4
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// États MHI
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#define ATH12K_MHI_STATE_RESET 0x0
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#define ATH12K_MHI_STATE_READY 0x1
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#define ATH12K_MHI_STATE_M0 0x2
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#define ATH12K_MHI_STATE_M1 0x3
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#define ATH12K_MHI_STATE_M2 0x4
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#define ATH12K_MHI_STATE_M3 0x5
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// Environnements d'exécution MHI (EE)
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#define ATH12K_MHI_EE_PBL 0x00
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#define ATH12K_MHI_EE_SBL 0x01
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#define ATH12K_MHI_EE_AMSS 0x02
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#define ATH12K_MHI_EE_RDDM 0x03
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#define ATH12K_MHI_EE_WFW 0x04
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#define ATH12K_MHISTATUS_READY_MASK 0x00000001
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#define ATH12K_MHICTRL_RESET_MASK 0x00000002
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#define ATH12K_MHICTRL_MHISTATE_SHIFT 8
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#define ATH12K_MHICTRL_MHISTATE_MASK 0x0000FF00
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#define ATH12K_MHISTATUS_MHISTATE_SHIFT 8
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#define ATH12K_MHISTATUS_MHISTATE_MASK 0x0000FF00
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#define ATH12K_MHICFG_NER_MASK 0x00FF0000
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#define ATH12K_MHICFG_NHWER_MASK 0xFF000000
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// Types de paquets d'événements MHI
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#define ATH12K_MHI_PKT_TYPE_STATE_CHANGE_EVENT 0x20
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#define ATH12K_MHI_PKT_TYPE_EE_EVENT 0x40
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// Registres BHI (Boot Host Interface)
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#define ATH12K_BHI_BHIVERSION_MINOR 0x00
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#define ATH12K_BHI_BHIVERSION_MAJOR 0x04
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#define ATH12K_BHI_IMGADDR_LOW 0x08
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#define ATH12K_BHI_IMGADDR_HIGH 0x0c
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#define ATH12K_BHI_IMGSIZE 0x10
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#define ATH12K_BHI_IMGTXDB 0x18
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#define ATH12K_BHI_EXECENV 0x28
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#define ATH12K_BHI_STATUS 0x2c
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#define ATH12K_BHI_ERRCODE 0x30
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#define ATH12K_BHI_SERIALNU 0x40
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#define ATH12K_BHI_STATUS_RESET 0x00
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#define ATH12K_BHI_STATUS_MASK 0xC0000000
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#define ATH12K_BHI_STATUS_SHIFT 30
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#define ATH12K_BHI_STATUS_SUCCESS 0x02
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#define ATH12K_BHI_STATUS_ERROR 0x03
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// Registres BHIe (Boot Host Interface extension)
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#define ATH12K_BHIE_MSMSOCID 0x00
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#define ATH12K_BHIE_TXVECADDR_LOW 0x2c
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#define ATH12K_BHIE_TXVECADDR_HIGH 0x30
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#define ATH12K_BHIE_TXVECSIZE 0x34
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#define ATH12K_BHIE_TXVECDB 0x3c
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#define ATH12K_BHIE_TXVECSTATUS 0x44
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#define ATH12K_BHIE_RXVECADDR_LOW 0x60
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#define ATH12K_BHIE_RXVECADDR_HIGH 0x64
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#define ATH12K_BHIE_RXVECSIZE 0x68
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#define ATH12K_BHIE_RXVECDB 0x70
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#define ATH12K_BHIE_RXVECSTATUS 0x78
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#define ATH12K_BHIE_TXVECSTATUS_STATUS_MASK 0xC0000000
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#define ATH12K_BHIE_TXVECSTATUS_STATUS_SHIFT 30
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#define ATH12K_BHIE_TXVECSTATUS_XFER_COMPL 0x02
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struct bhi_vec_entry {
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uint64_t dma_addr;
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uint64_t size;
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} __attribute__((packed));
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struct mhi_chan_ctxt {
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UInt32 chcfg;
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UInt32 chtype;
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UInt32 erindex;
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UInt64 rbase __attribute__((packed, aligned(4)));
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UInt64 rlen __attribute__((packed, aligned(4)));
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UInt64 rp __attribute__((packed, aligned(4)));
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UInt64 wp __attribute__((packed, aligned(4)));
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} __attribute__((packed));
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struct mhi_event_ctxt {
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UInt32 intmod;
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UInt32 ertype;
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UInt32 msivec;
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UInt64 rbase __attribute__((packed, aligned(4)));
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UInt64 rlen __attribute__((packed, aligned(4)));
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UInt64 rp __attribute__((packed, aligned(4)));
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UInt64 wp __attribute__((packed, aligned(4)));
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} __attribute__((packed));
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struct mhi_cmd_ctxt {
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UInt32 reserved0;
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UInt32 reserved1;
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UInt32 reserved2;
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UInt64 rbase __attribute__((packed, aligned(4)));
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UInt64 rlen __attribute__((packed, aligned(4)));
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UInt64 rp __attribute__((packed, aligned(4)));
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UInt64 wp __attribute__((packed, aligned(4)));
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} __attribute__((packed));
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struct mhi_ring_element {
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UInt64 ptr;
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UInt32 dword[2];
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} __attribute__((packed));
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#define MHI_TRE_GET_EV_TYPE(tre) (((tre)->dword[1] >> 16) & 0xFF)
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#define MHI_TRE_GET_EV_STATE(tre) (((tre)->dword[0] >> 24) & 0xFF)
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#define MHI_TRE_GET_EV_EXECENV(tre) (((tre)->dword[0] >> 24) & 0xFF)
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class QualcommWifi : public IO80211Controller {
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OSDeclareDefaultStructors(QualcommWifi)
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private:
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IOPCIDevice *fPciDevice;
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IOMemoryMap *fBar0Map;
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volatile void *fBar0Virt;
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UInt32 fCurrWindow;
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IOInterruptEventSource *fInterruptSource;
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IOWorkLoop *fWorkLoop;
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IO80211WorkQueue *fWorkQueue;
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IONetworkInterface *fNetif;
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IO80211SkywalkInterface *fSkywalkInterface;
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bool fSkywalkCtrlAttached;
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bool fSkywalkAttached;
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bool fSkywalkStarted;
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IOEthernetAddress fMacAddress;
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// Skywalk Ethernet Datapath & Queues (Étape 8)
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uint8_t fSkywalkRegInfo[0x130];
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OSObject *fSkywalkPool;
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OSObject *fSkywalkTxQueue;
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OSObject *fSkywalkRxQueue;
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bool fEthernetRegistered;
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// État réseau Wi-Fi
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bool fLinkActive;
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UInt16 fCurrentChannel;
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SInt32 fLastRssi;
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UInt8 fSsid[APPLE80211_MAX_SSID_LEN];
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UInt32 fSsidLen;
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UInt8 fBssid[6];
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bool fScanInProgress;
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// Tampon DMA physiquement contigu
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IOBufferMemoryDescriptor *fDmaBuf;
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IOPhysicalAddress fDmaPhysAddr;
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void *fDmaVirtAddr;
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bool fDmaPrepared;
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bool fFirmwareLoaded;
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OSObject *fFaultReporter;
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OSObject *fLogger;
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UInt32 read32(UInt32 offset);
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void write32(UInt32 offset, UInt32 value);
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void selectWindow(UInt32 offset);
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UInt32 socRead32(UInt32 offset);
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void socWrite32(UInt32 offset, UInt32 value);
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bool allocDmaContext(IOByteCount size);
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void freeDmaContext(void);
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bool loadBhiFirmware(void);
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static void interruptOccurred(OSObject *owner, IOInterruptEventSource *src, int count);
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public:
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virtual bool init(OSDictionary *dictionary = 0) override;
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virtual void free(void) override;
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virtual IOService *probe(IOService *provider, SInt32 *score) override;
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virtual bool start(IOService *provider) override;
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virtual void stop(IOService *provider) override;
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// Power Management (requis pour satisfaire joinPMtree de fSkywalkInterface->start)
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virtual void joinPMtree(IOService *driver) override;
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virtual IOReturn setPowerState(unsigned long powerStateOrdinal, IOService *whatDevice) override;
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virtual IOReturn powerStateWillChangeTo(IOPMPowerFlags capabilities, unsigned long stateNumber, IOService *whatDevice) override;
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virtual IOReturn powerStateDidChangeTo(IOPMPowerFlags capabilities, unsigned long stateNumber, IOService *whatDevice) override;
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// WorkQueue / WorkLoop interface required by IO80211Controller / IONetworkController
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virtual bool createWorkLoop(void) override;
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virtual IOWorkLoop* getWorkLoop(void) const override;
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virtual bool createWorkQueue(void) override;
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virtual IO80211WorkQueue* getWorkQueue(void) const override;
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// IOEthernetController / IONetworkController interface
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virtual IOReturn getHardwareAddress(IOEthernetAddress *addrP) override;
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virtual IOReturn enable(IONetworkInterface *netif) override;
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virtual IOReturn disable(IONetworkInterface *netif) override;
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virtual UInt32 outputPacket(mbuf_t m, void *param) override;
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// macOS Tahoe 26.x (Darwin 25) IO80211Controller Skywalk overrides
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virtual bool isCommandProhibited(int command) override { return false; }
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virtual IOReturn handleCardSpecific(IO80211SkywalkInterface *iface, unsigned long req_type, void *req_data, bool isSet) override;
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virtual UInt32 hardwareOutputQueueDepth(void) override { return 0; }
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virtual SInt32 performCountryCodeOperation(IO80211CountryCodeOp op) override { return 0; }
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virtual void dataLinkLayerAttachComplete(void) override;
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virtual SInt32 enableFeature(IO80211FeatureCode code, void *arg) override { return 0; }
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virtual IOReturn getDRIVER_VERSION(IO80211SkywalkInterface *iface, apple80211_version_data *vd) override;
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virtual IOReturn getHARDWARE_VERSION(IO80211SkywalkInterface *iface, apple80211_version_data *vd) override;
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virtual IOReturn getCARD_CAPABILITIES(IO80211SkywalkInterface *iface, apple80211_capability_data *cap) override;
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virtual IOReturn getPOWER(IO80211SkywalkInterface *iface, apple80211_power_data *pwr) override;
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virtual IOReturn setPOWER(IO80211SkywalkInterface *iface, apple80211_power_data *pwr) override;
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virtual IOReturn getCOUNTRY_CODE(IO80211SkywalkInterface *iface, apple80211_country_code_data *cc) override;
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virtual IOReturn setCOUNTRY_CODE(IO80211SkywalkInterface *iface, apple80211_country_code_data *cc) override { return kIOReturnSuccess; }
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virtual IOReturn setGET_DEBUG_INFO(IO80211SkywalkInterface *iface, apple80211_debug_command *dbg) override { return kIOReturnSuccess; }
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virtual void* getLogger(void) const override;
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virtual void* getFaultReporterFromDriver(void) override;
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virtual IORecursiveLock* allocIO80211RecursiveLock(void) override;
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virtual UInt32 getActionFramePoolCapacity(void) override;
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virtual IO80211SkywalkInterface* getPrimarySkywalkInterface(void) override;
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virtual IOReturn setMulticastList(ether_addr const *addrs, UInt32 count) override;
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// Scan Wi-Fi & Notification d'achèvement vers airportd
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void postScanDone(void);
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// Association / Dissociation Wi-Fi
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IOReturn handleAssociate(struct apple80211_assoc_data *assoc);
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IOReturn handleDisassociate(void);
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// Dispatcher de requêtes Apple80211 / airportd
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SInt32 handleApple80211Request(unsigned int req_type, int req_val, void* req_data);
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// Gestion des Médiums Réseau (IONetworkController / SIOCGIFMEDIA)
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virtual IOReturn selectMedium(const IONetworkMedium *medium) override;
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bool createMediumTables(void);
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};
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#endif
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