https://git.reactos.org/?p=reactos.git;a=commitdiff;h=ffbc81fdf2f8c203d28cb554605a6a099a916265
commit ffbc81fdf2f8c203d28cb554605a6a099a916265 Author: Dmitry Borisov <[email protected]> AuthorDate: Tue Jul 25 22:12:08 2023 +0600 Commit: Stanislav Motylkov <[email protected]> CommitDate: Sat Aug 5 16:40:13 2023 +0300 [FREELDR] Implement bus mouse detection This allows to automatically install the inport device driver (it's now possible since 7d5e1591313), which can be used on 86Box. References: - https://raw.githubusercontent.com/86Box/86Box/master/src/device/mouse_bus.c - https://bochs.sourceforge.io/cgi-bin/lxr/source/iodev/busmouse.cc --- boot/freeldr/freeldr/arch/i386/irqsup.S | 33 +++++ boot/freeldr/freeldr/arch/i386/pc/machpc.c | 214 +++++++++++++++++++++++++++++ boot/freeldr/freeldr/pcat.cmake | 1 + 3 files changed, 248 insertions(+) diff --git a/boot/freeldr/freeldr/arch/i386/irqsup.S b/boot/freeldr/freeldr/arch/i386/irqsup.S new file mode 100644 index 00000000000..7c35ef383ec --- /dev/null +++ b/boot/freeldr/freeldr/arch/i386/irqsup.S @@ -0,0 +1,33 @@ +/* + * PROJECT: FreeLoader + * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later) + * PURPOSE: Interrupt handling + * COPYRIGHT: Copyright 2023 Dmitry Borisov <[email protected]> + */ + +#include <asm.inc> + +#define PIC1_CONTROL_PORT HEX(20) +#define PIC_EOI HEX(20) + +.code32 + +PUBLIC _HwIrqHandler +_HwIrqHandler: + push ax + + /* Increment the interrupt count */ + inc dword ptr ds:[_HwIrqCount] + + /* Dismiss the interrupt */ + mov al, PIC_EOI + out PIC1_CONTROL_PORT, al + + pop ax + iret + +PUBLIC _HwIrqCount +_HwIrqCount: + .long 0 + +END diff --git a/boot/freeldr/freeldr/arch/i386/pc/machpc.c b/boot/freeldr/freeldr/arch/i386/pc/machpc.c index f20fa2b9a52..4bef802f667 100644 --- a/boot/freeldr/freeldr/arch/i386/pc/machpc.c +++ b/boot/freeldr/freeldr/arch/i386/pc/machpc.c @@ -38,6 +38,20 @@ DBG_DEFAULT_CHANNEL(HWDETECT); /* Mouse Systems Mouse */ #define MOUSE_TYPE_MOUSESYSTEMS 4 +#define INPORT_REGISTER_CONTROL 0x00 +#define INPORT_REGISTER_DATA 0x01 +#define INPORT_REGISTER_SIGNATURE 0x02 + +#define INPORT_REG_MODE 0x07 +#define INPORT_RESET 0x80 +#define INPORT_MODE_BASE 0x10 +#define INPORT_TEST_IRQ 0x16 +#define INPORT_SIGNATURE 0xDE + +#define PIC1_CONTROL_PORT 0x20 +#define PIC1_DATA_PORT 0x21 +#define PIC2_CONTROL_PORT 0xA0 +#define PIC2_DATA_PORT 0xA1 /* PS2 stuff */ @@ -1291,6 +1305,203 @@ DetectPS2Mouse(PCONFIGURATION_COMPONENT_DATA BusKey) } } +#if defined(_M_IX86) +static VOID +CreateBusMousePeripheralKey( + _Inout_ PCONFIGURATION_COMPONENT_DATA BusKey, + _In_ ULONG IoBase, + _In_ ULONG Irq) +{ + PCM_PARTIAL_RESOURCE_LIST PartialResourceList; + PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor; + PCONFIGURATION_COMPONENT_DATA ControllerKey; + PCONFIGURATION_COMPONENT_DATA PeripheralKey; + ULONG Size; + + /* Set 'Configuration Data' value */ + Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[2]); + PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST); + if (PartialResourceList == NULL) + { + ERR("Failed to allocate resource descriptor\n"); + return; + } + + /* Initialize resource descriptor */ + RtlZeroMemory(PartialResourceList, Size); + PartialResourceList->Version = 1; + PartialResourceList->Revision = 1; + PartialResourceList->Count = 2; + + /* Set IO Port */ + PartialDescriptor = &PartialResourceList->PartialDescriptors[0]; + PartialDescriptor->Type = CmResourceTypePort; + PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive; + PartialDescriptor->Flags = CM_RESOURCE_PORT_IO; + PartialDescriptor->u.Port.Start.LowPart = IoBase; + PartialDescriptor->u.Port.Start.HighPart = 0; + PartialDescriptor->u.Port.Length = 4; + + /* Set Interrupt */ + PartialDescriptor = &PartialResourceList->PartialDescriptors[1]; + PartialDescriptor->Type = CmResourceTypeInterrupt; + PartialDescriptor->ShareDisposition = CmResourceShareUndetermined; + PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED; + PartialDescriptor->u.Interrupt.Level = Irq; + PartialDescriptor->u.Interrupt.Vector = Irq; + PartialDescriptor->u.Interrupt.Affinity = (KAFFINITY)-1; + + /* Create controller key */ + FldrCreateComponentKey(BusKey, + ControllerClass, + PointerController, + Input, + 0, + 0xFFFFFFFF, + NULL, + PartialResourceList, + Size, + &ControllerKey); + + /* Set 'Configuration Data' value */ + Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors); + PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST); + if (PartialResourceList == NULL) + { + ERR("Failed to allocate resource descriptor\n"); + return; + } + + /* Initialize resource descriptor */ + RtlZeroMemory(PartialResourceList, Size); + PartialResourceList->Version = 1; + PartialResourceList->Revision = 1; + PartialResourceList->Count = 0; + + /* Create peripheral key */ + FldrCreateComponentKey(ControllerKey, + ControllerClass, + PointerPeripheral, + Input, + 0, + 0xFFFFFFFF, + "MICROSOFT INPORT MOUSE", + PartialResourceList, + Size, + &PeripheralKey); +} + +extern KIDTENTRY DECLSPEC_ALIGN(4) i386Idt[32]; +VOID __cdecl HwIrqHandler(VOID); +extern volatile ULONG HwIrqCount; + +static ULONG +DetectBusMouseTestIrq( + _In_ ULONG IoBase, + _In_ ULONG Irq) +{ + USHORT OldOffset, OldExtendedOffset; + ULONG Vector, i; + + HwIrqCount = 0; + + /* Reset the device */ + WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_CONTROL, INPORT_RESET); + WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_CONTROL, INPORT_REG_MODE); + + Vector = Irq + 8; + + /* Save the old interrupt vector and replace it by ours */ + OldOffset = i386Idt[Vector].Offset; + OldExtendedOffset = i386Idt[Vector].ExtendedOffset; + + i386Idt[Vector].Offset = (ULONG)HwIrqHandler & 0xFFFF; + i386Idt[Vector].ExtendedOffset = (ULONG)HwIrqHandler >> 16; + + /* Enable the requested IRQ on the master PIC */ + WRITE_PORT_UCHAR((PUCHAR)PIC1_DATA_PORT, ~(1 << Irq)); + + _enable(); + + /* Configure the device to generate interrupts */ + for (i = 0; i < 15; i++) + { + WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_DATA, INPORT_MODE_BASE); + WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_DATA, INPORT_TEST_IRQ); + } + + /* Disable the device */ + WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_DATA, 0); + + _disable(); + + i386Idt[Vector].Offset = OldOffset; + i386Idt[Vector].ExtendedOffset = OldExtendedOffset; + + return (HwIrqCount != 0) ? Irq : 0; +} + +static ULONG +DetectBusMouseIrq( + _In_ ULONG IoBase) +{ + UCHAR Mask1, Mask2; + ULONG Irq, Result; + + /* Save the current interrupt mask */ + Mask1 = READ_PORT_UCHAR(PIC1_DATA_PORT); + Mask2 = READ_PORT_UCHAR(PIC2_DATA_PORT); + + /* Mask the interrupts on the slave PIC */ + WRITE_PORT_UCHAR(PIC2_DATA_PORT, 0xFF); + + /* Process IRQ detection: IRQ 5, 4, 3 */ + for (Irq = 5; Irq >= 3; Irq--) + { + Result = DetectBusMouseTestIrq(IoBase, Irq); + if (Result != 0) + break; + } + + /* Restore the mask */ + WRITE_PORT_UCHAR(PIC1_DATA_PORT, Mask1); + WRITE_PORT_UCHAR(PIC2_DATA_PORT, Mask2); + + return Result; +} + +static VOID +DetectBusMouse( + _Inout_ PCONFIGURATION_COMPONENT_DATA BusKey) +{ + ULONG IoBase, Irq, Signature1, Signature2, Signature3; + + /* + * The bus mouse lives at one of these addresses: 0x230, 0x234, 0x238, 0x23C. + * The 0x23C port is the most common I/O setting. + */ + for (IoBase = 0x23C; IoBase >= 0x230; IoBase -= 4) + { + Signature1 = READ_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_SIGNATURE); + Signature2 = READ_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_SIGNATURE); + if (Signature1 == Signature2) + continue; + if (Signature1 != INPORT_SIGNATURE && Signature2 != INPORT_SIGNATURE) + continue; + + Signature3 = READ_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_SIGNATURE); + if (Signature1 != Signature3) + continue; + + Irq = DetectBusMouseIrq(IoBase); + if (Irq == 0) + continue; + + CreateBusMousePeripheralKey(BusKey, IoBase, Irq); + break; + } +} +#endif /* _M_IX86 */ // Implemented in pcvesa.c, returns the VESA version USHORT BiosIsVesaSupported(VOID); @@ -1393,6 +1604,9 @@ DetectIsaBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber) DetectParallelPorts(BusKey); DetectKeyboardController(BusKey); DetectPS2Mouse(BusKey); +#if defined(_M_IX86) + DetectBusMouse(BusKey); +#endif DetectDisplayController(BusKey); /* FIXME: Detect more ISA devices */ diff --git a/boot/freeldr/freeldr/pcat.cmake b/boot/freeldr/freeldr/pcat.cmake index 24c8e3627f0..5ea6f9b8aa7 100644 --- a/boot/freeldr/freeldr/pcat.cmake +++ b/boot/freeldr/freeldr/pcat.cmake @@ -42,6 +42,7 @@ if(ARCH STREQUAL "i386") arch/i386/drvmap.S arch/i386/entry.S arch/i386/int386.S + arch/i386/irqsup.S arch/i386/pnpbios.S # arch/i386/i386trap.S arch/i386/linux.S)
