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| Rev | Author | Line No. | Line | 
|---|---|---|---|
| 23 | f9daq | 1 | //------------------------------------------------------------------------- | 
        
| 2 | // WINNT driver for PCICC32 interface from ARW Elektronik, Germany -------- | 
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| 3 | // all around irq handling | 
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| 4 | // | 
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| 5 | // (c) 1999-2002 ARW Elektronik | 
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| 6 | // | 
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| 7 | // this source code is published under GPL (Open Source). You can use, redistrubute and  | 
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| 8 | // modify it unless this header   is not modified or deleted. No warranty is given that  | 
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| 9 | // this software will work like expected. | 
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| 10 | // This product is not authorized for use as critical component in life support systems | 
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| 11 | // wihout the express written approval of ARW Elektronik Germany. | 
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| 12 | // | 
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| 13 | // Please announce changes and hints to ARW Elektronik | 
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| 14 | // | 
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| 15 | // what                                            who          when | 
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| 16 | // started                                         AR           01.08.1999 | 
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| 17 | // first release 1.0                                                       AR                   17.10.1999 | 
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| 18 | // IoConnectInterrupt, share vector now true       AR           04.03.2000 | 
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| 19 | // globalInterruptEnabledStatus() added            AR           24.02.2001 | 
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| 20 | // added IRQ handling                              AR           24.02.2001 | 
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| 21 | // added WITH_IRQS switch to switsch off irqs      AR           04.10.2001 | 
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| 22 | // changed making procedure (only VCC > 6.0)       AR           30.05.2002 | 
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| 23 | // | 
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| 24 | |||
| 25 | //------------------------------------------------------------------------- | 
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| 26 | // INCLUDES | 
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| 27 | // | 
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| 28 | #define WITH_IRQS     // comment out for interrupt handling excludes | 
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| 29 | // ACHTUNG TEST | 
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| 30 | |||
| 31 | //------------------------------------------------------------------------- | 
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| 32 | // INCLUDES | 
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| 33 | // | 
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| 34 | #include <ntddk.h> | 
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| 35 | #include <pcicc32_drv.h> | 
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| 36 | #include <pcicc32_i.h> | 
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| 37 | #include <pcicc32.h> | 
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| 38 | #include <pcicc32_local.h> | 
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| 39 | |||
| 40 | //------------------------------------------------------------------------ | 
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| 41 | // DEFINES | 
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| 42 | // | 
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| 43 | #ifndef DWORD | 
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| 44 | #define DWORD ULONG | 
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| 45 | #endif | 
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| 46 | |||
| 47 | #ifndef WORD | 
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| 48 | #define WORD USHORT | 
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| 49 | #endif | 
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| 50 | |||
| 51 | //------------------------------------------------------------------------ | 
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| 52 | // GLOBALS | 
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| 53 | // | 
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| 54 | |||
| 55 | //------------------------------------------------------------------------ | 
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| 56 | // FUNCTIONS | 
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| 57 | // | 
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| 58 | |||
| 59 | //------------------------------------------------------------------------ | 
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| 60 | // enable and disable of interrupts | 
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| 61 | // | 
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| 62 | void globalInterruptEnable(PCIADA *pciada)  | 
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| 63 | { | 
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| 64 | #ifdef WITH_IRQS | 
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| 65 | WRITE_REGISTER_USHORT(pciada->pwIntCSR, ENABLE_PCIADA_IRQS);  | 
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| 66 | #endif | 
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| 67 | } | 
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| 68 | |||
| 69 | void globalInterruptDisable(PCIADA *pciada)  | 
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| 70 | { | 
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| 71 | WRITE_REGISTER_USHORT(pciada->pwIntCSR, DISABLE_PCIADA_IRQS);  | 
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| 72 | } | 
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| 73 | |||
| 74 | unsigned short globalInterruptEnabledStatus(PCIADA *pciada)  | 
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| 75 | { | 
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| 76 | unsigned short wStatus;  | 
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| 77 | |||
| 78 | wStatus = READ_REGISTER_USHORT(pciada->pwIntCSR);  | 
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| 79 | |||
| 80 | if ((wStatus & ENABLE_PCIADA_IRQS) == ENABLE_PCIADA_IRQS)  | 
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| 81 | return 1;  | 
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| 82 | |||
| 83 | return 0;  | 
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| 84 | } | 
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| 85 | |||
| 86 | //------------------------------------------------------------------------ | 
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| 87 | // determine which interrupt and evaluates status if appropriate | 
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| 88 | // | 
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| 89 | static int evaluateIrqStatus(PCIADA *pciada, ULONG *dwIrqStatus)  | 
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| 90 | { | 
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| 91 | volatile USHORT wCntrl;  | 
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| 92 | int result = 0;  | 
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| 93 | |||
| 94 | wCntrl = READ_REGISTER_USHORT(pciada->pwCntrl);  | 
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| 95 | if (wCntrl & 0x100) // pciada switched on ?  | 
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| 96 |         { | 
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| 97 | volatile USHORT wIntCSR = READ_REGISTER_USHORT(pciada->pwIntCSR);  | 
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| 98 | |||
| 99 | if (wIntCSR & 0x0040) // are the interrupts enabled?  | 
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| 100 |                 { | 
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| 101 | if (wIntCSR & 0x20)  | 
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| 102 |                         { | 
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| 103 |                                 // it's the pci interrupt # 2 | 
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| 104 | globalInterruptDisable(pciada); // disable following interrupts  | 
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| 105 | |||
| 106 |                                 // get current Cntrl - and clear interrupt | 
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| 107 | WRITE_REGISTER_USHORT(pciada->pwCntrl, (USHORT)(wCntrl & ~0x0100)); // disable  | 
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| 108 | WRITE_REGISTER_USHORT(pciada->pwCntrl, wCntrl); // enable again  | 
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| 109 | |||
| 110 | *dwIrqStatus = CONNECTION_TIMEOUT;  | 
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| 111 | |||
| 112 | result = 1;  | 
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| 113 |                         } | 
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| 114 | |||
| 115 | if (wIntCSR & 0x04)  | 
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| 116 |                         { | 
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| 117 | globalInterruptDisable(pciada); // disable following interrupts  | 
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| 118 | |||
| 119 | *dwIrqStatus = READ_REGISTER_ULONG(_DWORD_NAF(pciada->pvVirtIfr, 28, 2, 0));  | 
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| 120 | |||
| 121 |                                 // clear pending interrupt - LAM-FF | 
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| 122 | WRITE_REGISTER_USHORT(_WORD_NAF(pciada->pvVirtIfr, 28, 0, 16), 0);  | 
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| 123 | |||
| 124 | result = 1;  | 
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| 125 |                         } | 
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| 126 |                 } | 
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| 127 |         } | 
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| 128 | |||
| 129 | return result;  | 
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| 130 | } | 
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| 131 | |||
| 132 | //------------------------------------------------------------------------ | 
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| 133 | // main interrupt handler function | 
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| 134 | // | 
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| 135 | static BOOLEAN irq_service(PKINTERRUPT Interrupt, PVOID ServiceContext)  | 
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| 136 | { | 
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| 137 | PCIADA *pciada = (PCIADA *)ServiceContext;  | 
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| 138 | UNREFERENCED_PARAMETER(Interrupt);  | 
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| 139 | #ifndef WITH_IRQS | 
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| 140 | return FALSE;  | 
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| 141 | #endif | 
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| 142 | |||
| 143 | if (!evaluateIrqStatus(pciada, &pciada->dwIrqStatus))  | 
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| 144 |         { | 
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| 145 |                 // KdPrint(("Not my irq.\n")); | 
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| 146 | return FALSE;  | 
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| 147 |         } | 
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| 148 | |||
| 149 |         // fire custom deffered procedure call | 
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| 150 | KeInsertQueueDpc(&pciada->kDPCobj, (PVOID)pciada, (PVOID)&pciada->dwIrqStatus);  | 
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| 151 | |||
| 152 | KdPrint(("irq_service(0x%08x)\n", pciada->dwIrqStatus));  | 
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| 153 | return TRUE;  | 
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| 154 | } | 
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| 155 | |||
| 156 | //------------------------------------------------------------------------ | 
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| 157 | //  translate interrupt resources for PCIADAs to hardware independent ones | 
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| 158 | // | 
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| 159 | NTSTATUS PCICC32TranslateInterrupt(PDEVICE_OBJECT device_Obj)  | 
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| 160 | { | 
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| 161 | int i;  | 
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| 162 | NTSTATUS result = STATUS_SUCCESS;  | 
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| 163 | DEVICE_EXT *pDevExt = (DEVICE_EXT*)device_Obj->DeviceExtension;  | 
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| 164 | int nPCIADAs = pDevExt->nPCIADAs;  | 
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| 165 | PCIADA *pciada;  | 
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| 166 | |||
| 167 | KdPrint(("PCICC32TranslateInterrupt()\n"));  | 
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| 168 | |||
| 169 | for (i = 0; i < nPCIADAs; i++)  | 
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| 170 |         { | 
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| 171 | pciada = &pDevExt->pciada[i];  | 
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| 172 | |||
| 173 | KdPrint(("In - Bus:%d, IrqLine:%d\n", pciada->Bus, pciada->Irql));  | 
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| 174 | |||
| 175 | if (pciada->Irql)  | 
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| 176 |                 { | 
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| 177 | pciada->Vector = HalGetInterruptVector(PCIBus, pciada->Bus,  | 
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| 178 | pciada->Irql, pciada->Vector,  | 
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| 179 | &pciada->Irql, &pciada->Affinity);  | 
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| 180 | |||
| 181 | KdPrint(("Out - Irql:%d, Vector: %d, Affinity:%d\n", pciada->Irql, pciada->Vector, pciada->Affinity));  | 
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| 182 | |||
| 183 |                 } | 
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| 184 |                 else | 
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| 185 | result = STATUS_BIOS_FAILED_TO_CONNECT_INTERRUPT;  | 
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| 186 |         } | 
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| 187 | |||
| 188 | return result;  | 
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| 189 | } | 
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| 190 | |||
| 191 | //------------------------------------------------------------------------ | 
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| 192 | //  connect service routines to all PCIADA interrupts | 
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| 193 | // | 
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| 194 | NTSTATUS PCICC32ConnectInterrupt(PDEVICE_OBJECT device_Obj)  | 
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| 195 | { | 
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| 196 | #ifdef WITH_IRQS | 
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| 197 | int i;  | 
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| 198 | NTSTATUS result = STATUS_SUCCESS;  | 
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| 199 | DEVICE_EXT *pDevExt = (DEVICE_EXT*)device_Obj->DeviceExtension;  | 
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| 200 | int nPCIADAs = pDevExt->nPCIADAs;  | 
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| 201 | PCIADA *pciada;  | 
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| 202 | |||
| 203 | KdPrint(("PCICC32ConnectInterrupt()\n"));  | 
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| 204 | |||
| 205 |         // connect the interrupts to service routines | 
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| 206 | for (i = 0; i < nPCIADAs; i++)  | 
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| 207 |         { | 
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| 208 | pciada = &pDevExt->pciada[i];  | 
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| 209 | |||
| 210 | pciada->InterruptObject = NULL;  | 
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| 211 | |||
| 212 | if (pciada->Vector)  | 
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| 213 | result = IoConnectInterrupt(&pciada->InterruptObject,  | 
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| 214 |                         irq_service, | 
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| 215 | (PVOID)pciada,  | 
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| 216 |                                         NULL, | 
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| 217 | pciada->Vector,  | 
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| 218 | pciada->Irql,  | 
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| 219 | pciada->Irql,  | 
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| 220 |                                                                         LevelSensitive, | 
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| 221 |                                                                                 TRUE, | 
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| 222 | pciada->Affinity,  | 
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| 223 | FALSE);  | 
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| 224 | |||
| 225 | KdPrint(("irq_service:%p, VirtVect:%d, Irql:%d, hIrql:%d, Aff:0x%08x, Status:0x%08x\n",  | 
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| 226 | irq_service, pciada->Vector, pciada->Irql,  | 
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| 227 | pciada->Irql, pciada->Affinity, result));  | 
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| 228 | |||
| 229 | if (result != STATUS_SUCCESS)  | 
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| 230 | break;  | 
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| 231 |         } | 
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| 232 | |||
| 233 | if (result == STATUS_SUCCESS)  | 
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| 234 |         { | 
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| 235 | KdPrint(("PCICC32ConnectInterrupt() OK.\n"));  | 
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| 236 |         } | 
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| 237 | |||
| 238 | return result;  | 
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| 239 | #else | 
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| 240 | return STATUS_SUCCESS;  | 
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| 241 | #endif | 
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| 242 | } | 
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| 243 | |||
| 244 | //------------------------------------------------------------------------ | 
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| 245 | //  dis-connect service routines to all PCIADA interrupts | 
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| 246 | // | 
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| 247 | NTSTATUS PCICC32DisConnectInterrupt(PDEVICE_OBJECT device_Obj)  | 
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| 248 | { | 
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| 249 | #ifdef WITH_IRQS | 
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| 250 | int i;  | 
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| 251 | DEVICE_EXT *pDevExt = (DEVICE_EXT*)device_Obj->DeviceExtension;  | 
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| 252 | int nPCIADAs = pDevExt->nPCIADAs;  | 
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| 253 | PCIADA *pciada;  | 
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| 254 | |||
| 255 | KdPrint(("DisConnectInterrupt()\n"));  | 
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| 256 | |||
| 257 |         // dis connect the interrupts to service routines | 
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| 258 | for (i = 0; i < nPCIADAs; i++)  | 
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| 259 |         { | 
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| 260 | pciada = &pDevExt->pciada[i];  | 
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| 261 | |||
| 262 | KdPrint(("IrqObj:0x%08x\n", pciada->InterruptObject));  | 
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| 263 | |||
| 264 | if (pciada->InterruptObject)  | 
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| 265 |                 { | 
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| 266 | IoDisconnectInterrupt(pciada->InterruptObject);  | 
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| 267 | pciada->InterruptObject = 0;  | 
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| 268 |                 } | 
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| 269 |         } | 
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| 270 | #endif | 
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| 271 | |||
| 272 | return STATUS_SUCCESS;  | 
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| 273 | } | 
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| 274 | |||
| 275 |