include/hw/dma/bcm2835_dma.h

   1 /*
   2  * Raspberry Pi emulation (c) 2012 Gregory Estrade
   3  *
   4  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #ifndef BCM2835_DMA_H
   9 #define BCM2835_DMA_H
  10
  11 #include "hw/sysbus.h"
  12
  13 typedef struct {
  14     uint32_t cs;
  15     uint32_t conblk_ad;
  16     uint32_t ti;
  17     uint32_t source_ad;
  18     uint32_t dest_ad;
  19     uint32_t txfr_len;
  20     uint32_t stride;
  21     uint32_t nextconbk;
  22     uint32_t debug;
  23
  24     qemu_irq irq;
  25 } BCM2835DMAChan;
  26
  27 #define TYPE_BCM2835_DMA "bcm2835-dma"
  28 #define BCM2835_DMA(obj) \
  29         OBJECT_CHECK(BCM2835DMAState, (obj), TYPE_BCM2835_DMA)
  30
  31 #define BCM2835_DMA_NCHANS 16
  32
  33 typedef struct {
  34     /*< private >*/
  35     SysBusDevice busdev;
  36     /*< public >*/
  37
  38     MemoryRegion iomem0, iomem15;
  39     MemoryRegion *dma_mr;
  40     AddressSpace dma_as;
  41
  42     BCM2835DMAChan chan[BCM2835_DMA_NCHANS];
  43     uint32_t int_status;
  44     uint32_t enable;
  45 } BCM2835DMAState;
  46
  47 #endif