60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
#include "NuBusFPGARAMDskDrvr.h"
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#ifdef ENABLE_DMA
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OSErr changeRAMDskIRQ(AuxDCEPtr dce, char en, OSErr err) {
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struct RAMDrvContext *ctx = *(struct RAMDrvContext**)dce->dCtlStorage;
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if (en != ctx->irqen) {
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/* write_reg(dce, GOBOFB_DEBUG, 0xBEEF0005); */
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/* write_reg(dce, GOBOFB_DEBUG, en); */
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if (en) {
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if (SIntInstall(ctx->siqel, dce->dCtlSlot)) {
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return err;
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}
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} else {
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if (SIntRemove(ctx->siqel, dce->dCtlSlot)) {
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return err;
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}
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}
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write_reg(dce, DMA_IRQ_CTL, en ? revb(0x3) : revb(0x2)); // 0x2: always clear pending interrupt
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ctx->irqen = en;
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}
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return noErr;
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}
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#endif
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#pragma parameter __D0 cNuBusFPGARAMDskCtl(__A0, __A1)
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OSErr cNuBusFPGARAMDskCtl(CntrlParamPtr pb, /* DCtlPtr */ AuxDCEPtr dce)
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{
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OSErr ret = noErr;
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struct RAMDrvContext *ctx;
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/* write_reg(dce, GOBOFB_DEBUG, 0xDEAD0002); */
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/* write_reg(dce, GOBOFB_DEBUG, pb->csCode); */
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ctx = *(struct RAMDrvContext**)dce->dCtlStorage;
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if (ctx) {
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switch (pb->csCode)
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{
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case kFormat:
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ret = noErr;
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break;
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default:
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ret = controlErr;
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break;
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}
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} else {
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ret = offLinErr; /* r/w requested for an off-line drive */
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goto done;
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}
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done:
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if (!(pb->ioTrap & (1<<noQueueBit)))
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IODone((DCtlPtr)dce, ret);
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return ret;
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}
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