Cross Reference: /vbox/src/VBox/Devices/PC/DevDMA.cpp

Lines Matching defs:page
60 /** @page pg_dev_dma     DMA Overview and notes
68  *  - DMA transfers must occur within a 64KB/128KB 'page'
72  * offsets (except for the page registers) are therefore "double spaced".
119     uint8_t     au8PageHi[8];   /* High page registers (A24-A31). */
194 /* Map a DMA page register offset (0-7) to channel index (0-3). */
198 /* Map a channel index (0-3) to DMA page register offset (0-7). */
200 /* Map a channel number (0-7) to DMA page register offset (0-7). */
439 /** DMA page registers. There are 16 R/W page registers for compatibility with
440  * the IBM PC/AT; only some of those registers are used for DMA. The page register
453         Log2(("Read %#x (byte) from page register %#x (channel %d)\n",
462         Log2(("Read %#x (word) from page register %#x (channel %d)\n",
480         dc->au8PageHi[reg] = 0;  /* Corresponding high page cleared. */
481         Log2(("Wrote %#x to page register %#x (channel %d)\n",
489         dc->au8PageHi[reg] = 0;  /* Corresponding high page cleared. */
492         dc->au8PageHi[reg] = 0;  /* Corresponding high page cleared. */
497         Log(("Bad size write to page register %#x (size %d, data %#x)\n",
504  * EISA style high page registers, for extending the DMA addresses to cover
516         Log2(("Read %#x to from high page register %#x (channel %d)\n",
533         Log2(("Wrote %#x to high page register %#x (channel %d)\n",
539         Log(("Bad size write to high page register %#x (size %d, data %#x)\n",
674     uint32_t    page, pagehi;
682     page   = dc->au8Page[DMACH2PG(uChannel)] & ~dc->is16bit;
684     addr   = (pagehi << 24) | (page << 16) | (ch->u16CurAddr << dc->is16bit);
710     uint32_t    page, pagehi;
723     page   = dc->au8Page[DMACH2PG(uChannel)] & ~dc->is16bit;
725     addr   = (pagehi << 24) | (page << 16) | (ch->u16CurAddr << dc->is16bit);
791     /* NB: The page and address registers are unaffected by a reset
820     /* Optional EISA style high page registers (address bits 24-31). */
899             /* Remap page register contents. */