GitBucket
Ajax Dong
AtaPassThru
Function Table
| Address | Name | Description |
|---|---|---|
| ModuleEntryPoint | ||
| AtaPassThruInit | ||
| AtaPassThruDriverBindingStart | ||
| AtaPassThruDriverBindingStop | ||
| AtaPassThruFindDevice | ||
| AtaPassThruEnumeratePorts | ||
| AtaPassThruReadDeviceStatus | ||
| AtaPassThruSendCommand | ||
| AtaPassThruGetNextPort | ||
| AtaPassThruGetNextDevice | ||
| AtaPassThruBuildDevicePath | ||
| AtaPassThruGetDeviceFromPath | ||
| AtaPassThruResetPort | ||
| AtaPassThruResetDevice | ||
| AtaPassThruReportAssert | ||
| AtaPassThruReadDebugCmos | ||
| AtaPassThruCompareHobGuid | ||
| AtaPassThruReadUnaligned64 | ||
| CpuidWrapper | ||
| Automatically | generated decompilation for AtaPassThru.efi | |
| HR650X | AMI UEFI BIOS ATA Pass Thru Protocol driver | |
| This | driver implements the UEFI EFI_ATA_PASS_THRU_PROTOCOL on ATA/SATA | |
| controllers | detected by the SATA controller driver (SataController.efi). | |
| It | provides register-level ATA command passthrough to upper-layer drivers | |
| like | AtaBusDxe. | |
| Global | State | |
| GUIDs | //============================================================================= | |
| Forward | declarations of internal helpers | |
| _ModuleEntryPoint | (0x370) | |
| AtaPassThruInit | (sub_41C, 0x41C) | |
| Allocate | 16-byte private registration protocol structure | |
| Slot | 0 = Initialize callback (AtaPassThruDriverBindingStart) | |
| Slot | 1 = Unload callback (AtaPassThruDriverBindingStop) | |
| AtaPassThruDriverBindingStart | (sub_4FC, 0x4FC) | |
| IoAlign | Ctl->Reserved = 0; // Attributes | |
| Initialize | port/device context tracking | |
| Offset | +228 = current port, +230 = current device | |
| AtaPassThruDriverBindingStop | (sub_730, 0x730) | |
| AtaPassThruFindDevice | (sub_79C, 0x79C) | |
| AtaPassThruEnumeratePorts | (sub_7D4, 0x7D4) | |
| Walk | child handle linked list at controller protocol + 88 | |
| Check | child type == 4 (ATA channel) at offset -909 | |
| AtaPassThruReadDeviceStatus | (sub_854, 0x854) | |
| Status | / AltStatus | |
| Device | StatusBuffer[12] = (UINT8 )(DevInfoBase + 76); // DeviceControl | |
| SectorCount | StatusBuffer[8] = (UINT8 )(DevInfoBase + 72); // LbaHigh | |
| LbaLow | StatusBuffer[9] = (UINT8 )(DevInfoBase + 73); // (unused) | |
| LbaMid | StatusBuffer[10] = (UINT8 )(DevInfoBase + 74); // (unused) | |
| LbaHigh | / Error | |
| AtaPassThruSendCommand | (sub_960, 0x960) | |
| Validate | buffer alignment | |
| Resolve | child device for non-blocking mode | |
| Detect | 4K sector (IDENTIFY word 247) | |
| Adjust | transfer lengths from bytes to blocks | |
| Max | transfer: 256 sectors, or 65536 for 48-bit LBA | |
| Build | ACB from Asb register block | |
| Asb | layout used by this driver: | |
| Features | Acb[5] = Asb[5]; // SectorCount | |
| SectorNumber | Acb[7] = Asb[7]; // CylinderLow | |
| CylinderHigh | Acb[12] = Asb[2]; // SectorCountExp from Asb[2] | |
| SectorNumberExp | // Timeout conversion (100ns -> 1ms) | |
| ATA | register block construction | |
| Detect | 48-bit LBA commands by checking Asb[2] | |
| Extended | register command (48-bit LBA) | |
| DEV | bit | |
| Dispatch | by protocol type (command register [48]) | |
| Function | pointer table at DeviceInterface: | |
| ATA | Non-Data | |
| ATA | Software Reset | |
| ATA | PIO Data-Out | |
| ATA | PIO Data-In | |
| ATA | PIO Data-Out (alternate) | |
| ATAPI | IDENTIFY | |
| ATAPI | Packet / FPDMA | |
| ATA | Non-Data (alt path - Set Features) | |
| ATA | Read Status | |
| ATA | DMA (alt path) | |
| ATA | Device Reset (read status to clear) | |
| Read | register status after command | |
| AtaPassThruGetNextPort | (sub_D88, 0xD88) | |
| AtaPassThruGetNextDevice | (sub_E5C, 0xE5C) | |
| End | of device list | |
| Scan | for device matching port with higher port multiplier | |
| AtaPassThruBuildDevicePath | (sub_F88, 0xF88) | |
| Walk | IDENTIFY data descriptor list (device + 856) | |
| Found | ATA target descriptor: copy type+length | |
| Overwrite | with port/multiplier info | |
| AtaPassThruGetDeviceFromPath | (sub_10A0, 0x10A0) | |
| Active | channels use ATAPI device path (type=3, submode=18, length=10) | |
| AtaPassThruResetPort | (sub_1128, 0x1128) | |
| Call | device vtable + 200 (25*8) with NonData reset signature | |
| AtaPassThruResetDevice | (sub_1188, 0x1188) | |
| AtaPassThruReportAssert | (sub_12A8, 0x12A8) | |
| AtaPassThruGetDebugProtocol | (sub_11E0, 0x11E0) | |
| Check | TPL: GetTimerValue(31), if > 0x10 return NULL | |
| This | pattern is AMI-specific for lazy debug protocol init | |
| AtaPassThruGetHobList | (sub_12E8, 0x12E8) | |
| AtaPassThruReadDebugCmos | (sub_13C0, 0x13C0) | |
| Preserve | NMI, select reg 0x4B | |
| Read | platform config from fixed address | |
| Validate | debug level (1 or 2+) | |
| Return | debug level mask | |
| Level | 1 -> 0x80000004 (EFI_D_ERROR in AMI convention) | |
| Level | **2+ -> 0x80000006 (EFI_D_INFO | EFI_D_ERROR in AMI convention)** |
| AtaPassThruCompareHobGuid | (sub_1410, 0x1410) | |
| AtaPassThruReadUnaligned64 | (sub_1480, 0x1480) | |
| CpuidWrapper | (sub_14B0, 0x14B0) | |
| Memset32Pattern | (sub_14F0, 0x14F0) | |
| Build | 32-bit repeating pattern from low 16 bits | |
| Handle | unaligned head | |
| Fill | aligned portion with 32-bit pattern | |
| Trailing | bytes | |
| InternalMemcpy | (sub_1550, 0x1550) - overlapping-safe memmove | |
| Detect | backward overlap: src < dst and src+count > dst | |
| Fast | path for aligned >= 8 byte copy | |
| Match | source/dest alignment for head | |
| Reverse | copy alignment fixup | |
| Copy | 8-byte chunks | |
| END | AtaPassThru.c |
Generated by HR650X BIOS Decompilation Project