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Add support for Intel i801 SMBus on MacOS

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Shady Nawara 2022-05-31 00:59:07 +00:00 • committed by Adam Honse
parent 524675108d
commit e9c382d2e6
6 changed files with 204 additions and 2 deletions
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54
i2c_smbus/i2c_smbus_i801.cpp
View file

@ -9,8 +9,13 @@
\*-----------------------------------------*/
#include "i2c_smbus_i801.h"
#ifdef _WIN32
#include <Windows.h>
#include "OlsApi.h"
#elif _MACOSX_X86_X64
#include "macUSPCIOAccess.h"
#endif
#include "LogManager.h"
using namespace std::chrono_literals;
@ -490,6 +495,7 @@ s32 i2c_smbus_i801::i2c_xfer(u8 addr, char read_write, int* size, u8* data)
}
#include "Detector.h"
#ifdef _WIN32
#include "wmi.h"
bool i2c_smbus_i801_detect()
@ -558,6 +564,18 @@ bool i2c_smbus_i801_detect()
int sbv_id = (int)std::stoul(sbv_str, nullptr, 16);
int sbd_id = (int)std::stoul(sbd_str, nullptr, 16);
DWORD pciAddress = FindPciDeviceById(ven_id, dev_id, 0);
if(pciAddress == 0xFFFFFFFF)
{
continue;
}
uint8_t host_config = ReadPciConfigWord(pciAddress, SMBHSTCFG);
if ((host_config & SMBHSTCFG_HST_EN) == 0)
{
continue;
}
bus = new i2c_smbus_i801();
bus->pci_vendor = ven_id;
bus->pci_device = dev_id;
@ -572,5 +590,41 @@ bool i2c_smbus_i801_detect()
return(true);
}
#elif _MACOSX_X86_X64
bool i2c_smbus_i801_detect()
{
if(!GetMacUSPCIODriverStatus())
{
LOG_INFO("macUSPCIO is not loaded, i801 I2C bus detection aborted");
return(false);
}
uint8_t host_config = ReadConfigPortByte(SMBHSTCFG);
if ((host_config & SMBHSTCFG_HST_EN) == 0)
{
LOG_INFO("i801 SMBus Disabled");
return(false);
}
i2c_smbus_interface * bus;
bus = new i2c_smbus_i801();
// addresses are referenced from: https://opensource.apple.com/source/IOPCIFamily/IOPCIFamily-146/IOKit/pci/IOPCIDevice.h.auto.html
bus->pci_vendor = ReadConfigPortWord(0x00);
bus->pci_device = ReadConfigPortWord(0x02);
bus->pci_subsystem_vendor = ReadConfigPortWord(0x2c);
bus->pci_subsystem_device = ReadConfigPortWord(0x2e);
if(!bus->pci_vendor || !bus->pci_device || !bus->pci_subsystem_vendor || !bus->pci_subsystem_device)
{
return(false);
}
sprintf(bus->device_name, "Intel(R) SMBus - %X", bus->pci_device);
((i2c_smbus_i801 *)bus)->i801_smba = ReadConfigPortWord(0x20) & 0xFFFE;
ResourceManager::get()->RegisterI2CBus(bus);
return(true);
}
#endif
REGISTER_I2C_BUS_DETECTOR(i2c_smbus_i801_detect);

4
i2c_smbus/i2c_smbus_i801.h
View file

@ -77,6 +77,10 @@
#define STATUS_ERROR_FLAGS (SMBHSTSTS_FAILED | SMBHSTSTS_BUS_ERR | SMBHSTSTS_DEV_ERR)
#define STATUS_FLAGS (SMBHSTSTS_BYTE_DONE | SMBHSTSTS_INTR | STATUS_ERROR_FLAGS)
/* I801 Host Config */
#define SMBHSTCFG 0x040
#define SMBHSTCFG_HST_EN BIT(0)
class i2c_smbus_i801 : public i2c_smbus_interface
{
public: