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[FREELDR] Implement bus mouse detection
This allows to automatically install the inport device driver
(it's now possible since 7d5e159131), 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
This commit is contained in:
Dmitry Borisov
Stanislav Motylkov
parent
a14019b219
commit
ffbc81fdf2
3 changed files with 248 additions and 0 deletions
33
boot/freeldr/freeldr/arch/i386/irqsup.S
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33
boot/freeldr/freeldr/arch/i386/irqsup.S
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@ -0,0 +1,33 @@
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/*
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* PROJECT: FreeLoader
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: Interrupt handling
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* COPYRIGHT: Copyright 2023 Dmitry Borisov <di.sean@protonmail.com>
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*/
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#include <asm.inc>
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#define PIC1_CONTROL_PORT HEX(20)
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#define PIC_EOI HEX(20)
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.code32
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PUBLIC _HwIrqHandler
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_HwIrqHandler:
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push ax
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/* Increment the interrupt count */
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inc dword ptr ds:[_HwIrqCount]
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/* Dismiss the interrupt */
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mov al, PIC_EOI
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out PIC1_CONTROL_PORT, al
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pop ax
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iret
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PUBLIC _HwIrqCount
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_HwIrqCount:
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.long 0
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END
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@ -38,6 +38,20 @@ DBG_DEFAULT_CHANNEL(HWDETECT);
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/* Mouse Systems Mouse */
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#define MOUSE_TYPE_MOUSESYSTEMS 4
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#define INPORT_REGISTER_CONTROL 0x00
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#define INPORT_REGISTER_DATA 0x01
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#define INPORT_REGISTER_SIGNATURE 0x02
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#define INPORT_REG_MODE 0x07
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#define INPORT_RESET 0x80
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#define INPORT_MODE_BASE 0x10
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#define INPORT_TEST_IRQ 0x16
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#define INPORT_SIGNATURE 0xDE
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#define PIC1_CONTROL_PORT 0x20
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#define PIC1_DATA_PORT 0x21
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#define PIC2_CONTROL_PORT 0xA0
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#define PIC2_DATA_PORT 0xA1
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/* PS2 stuff */
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@ -1291,6 +1305,203 @@ DetectPS2Mouse(PCONFIGURATION_COMPONENT_DATA BusKey)
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}
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}
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#if defined(_M_IX86)
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static VOID
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CreateBusMousePeripheralKey(
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_Inout_ PCONFIGURATION_COMPONENT_DATA BusKey,
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_In_ ULONG IoBase,
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_In_ ULONG Irq)
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{
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PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
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PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
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PCONFIGURATION_COMPONENT_DATA ControllerKey;
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PCONFIGURATION_COMPONENT_DATA PeripheralKey;
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ULONG Size;
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/* Set 'Configuration Data' value */
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Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[2]);
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PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
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if (PartialResourceList == NULL)
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{
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ERR("Failed to allocate resource descriptor\n");
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return;
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}
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/* Initialize resource descriptor */
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RtlZeroMemory(PartialResourceList, Size);
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PartialResourceList->Version = 1;
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PartialResourceList->Revision = 1;
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PartialResourceList->Count = 2;
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/* Set IO Port */
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PartialDescriptor = &PartialResourceList->PartialDescriptors[0];
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PartialDescriptor->Type = CmResourceTypePort;
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PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
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PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
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PartialDescriptor->u.Port.Start.LowPart = IoBase;
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PartialDescriptor->u.Port.Start.HighPart = 0;
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PartialDescriptor->u.Port.Length = 4;
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/* Set Interrupt */
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PartialDescriptor = &PartialResourceList->PartialDescriptors[1];
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PartialDescriptor->Type = CmResourceTypeInterrupt;
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PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
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PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED;
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PartialDescriptor->u.Interrupt.Level = Irq;
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PartialDescriptor->u.Interrupt.Vector = Irq;
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PartialDescriptor->u.Interrupt.Affinity = (KAFFINITY)-1;
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/* Create controller key */
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FldrCreateComponentKey(BusKey,
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ControllerClass,
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PointerController,
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Input,
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0,
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0xFFFFFFFF,
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NULL,
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PartialResourceList,
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Size,
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&ControllerKey);
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/* Set 'Configuration Data' value */
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Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors);
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PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
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if (PartialResourceList == NULL)
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{
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ERR("Failed to allocate resource descriptor\n");
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return;
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}
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/* Initialize resource descriptor */
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RtlZeroMemory(PartialResourceList, Size);
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PartialResourceList->Version = 1;
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PartialResourceList->Revision = 1;
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PartialResourceList->Count = 0;
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/* Create peripheral key */
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FldrCreateComponentKey(ControllerKey,
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ControllerClass,
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PointerPeripheral,
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Input,
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0,
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0xFFFFFFFF,
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"MICROSOFT INPORT MOUSE",
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PartialResourceList,
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Size,
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&PeripheralKey);
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}
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extern KIDTENTRY DECLSPEC_ALIGN(4) i386Idt[32];
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VOID __cdecl HwIrqHandler(VOID);
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extern volatile ULONG HwIrqCount;
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static ULONG
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DetectBusMouseTestIrq(
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_In_ ULONG IoBase,
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_In_ ULONG Irq)
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{
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USHORT OldOffset, OldExtendedOffset;
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ULONG Vector, i;
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HwIrqCount = 0;
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/* Reset the device */
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WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_CONTROL, INPORT_RESET);
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WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_CONTROL, INPORT_REG_MODE);
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Vector = Irq + 8;
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/* Save the old interrupt vector and replace it by ours */
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OldOffset = i386Idt[Vector].Offset;
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OldExtendedOffset = i386Idt[Vector].ExtendedOffset;
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i386Idt[Vector].Offset = (ULONG)HwIrqHandler & 0xFFFF;
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i386Idt[Vector].ExtendedOffset = (ULONG)HwIrqHandler >> 16;
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/* Enable the requested IRQ on the master PIC */
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WRITE_PORT_UCHAR((PUCHAR)PIC1_DATA_PORT, ~(1 << Irq));
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_enable();
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/* Configure the device to generate interrupts */
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for (i = 0; i < 15; i++)
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{
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WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_DATA, INPORT_MODE_BASE);
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WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_DATA, INPORT_TEST_IRQ);
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}
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/* Disable the device */
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WRITE_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_DATA, 0);
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_disable();
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i386Idt[Vector].Offset = OldOffset;
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i386Idt[Vector].ExtendedOffset = OldExtendedOffset;
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return (HwIrqCount != 0) ? Irq : 0;
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}
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static ULONG
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DetectBusMouseIrq(
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_In_ ULONG IoBase)
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{
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UCHAR Mask1, Mask2;
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ULONG Irq, Result;
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/* Save the current interrupt mask */
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Mask1 = READ_PORT_UCHAR(PIC1_DATA_PORT);
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Mask2 = READ_PORT_UCHAR(PIC2_DATA_PORT);
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/* Mask the interrupts on the slave PIC */
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WRITE_PORT_UCHAR(PIC2_DATA_PORT, 0xFF);
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/* Process IRQ detection: IRQ 5, 4, 3 */
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for (Irq = 5; Irq >= 3; Irq--)
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{
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Result = DetectBusMouseTestIrq(IoBase, Irq);
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if (Result != 0)
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break;
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}
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/* Restore the mask */
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WRITE_PORT_UCHAR(PIC1_DATA_PORT, Mask1);
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WRITE_PORT_UCHAR(PIC2_DATA_PORT, Mask2);
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return Result;
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}
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static VOID
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DetectBusMouse(
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_Inout_ PCONFIGURATION_COMPONENT_DATA BusKey)
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{
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ULONG IoBase, Irq, Signature1, Signature2, Signature3;
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/*
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* The bus mouse lives at one of these addresses: 0x230, 0x234, 0x238, 0x23C.
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* The 0x23C port is the most common I/O setting.
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*/
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for (IoBase = 0x23C; IoBase >= 0x230; IoBase -= 4)
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{
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Signature1 = READ_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_SIGNATURE);
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Signature2 = READ_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_SIGNATURE);
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if (Signature1 == Signature2)
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continue;
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if (Signature1 != INPORT_SIGNATURE && Signature2 != INPORT_SIGNATURE)
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continue;
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Signature3 = READ_PORT_UCHAR((PUCHAR)IoBase + INPORT_REGISTER_SIGNATURE);
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if (Signature1 != Signature3)
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continue;
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Irq = DetectBusMouseIrq(IoBase);
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if (Irq == 0)
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continue;
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CreateBusMousePeripheralKey(BusKey, IoBase, Irq);
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break;
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}
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}
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#endif /* _M_IX86 */
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// Implemented in pcvesa.c, returns the VESA version
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USHORT BiosIsVesaSupported(VOID);
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@ -1393,6 +1604,9 @@ DetectIsaBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)
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DetectParallelPorts(BusKey);
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DetectKeyboardController(BusKey);
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DetectPS2Mouse(BusKey);
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#if defined(_M_IX86)
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DetectBusMouse(BusKey);
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#endif
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DetectDisplayController(BusKey);
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/* FIXME: Detect more ISA devices */
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@ -42,6 +42,7 @@ if(ARCH STREQUAL "i386")
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arch/i386/drvmap.S
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arch/i386/entry.S
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arch/i386/int386.S
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arch/i386/irqsup.S
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arch/i386/pnpbios.S
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# arch/i386/i386trap.S
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arch/i386/linux.S)
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