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 #include "qom/object.h"
  13
  14 typedef struct {
  15     uint32_t cs;
  16     uint32_t conblk_ad;
  17     uint32_t ti;
  18     uint32_t source_ad;
  19     uint32_t dest_ad;
  20     uint32_t txfr_len;
  21     uint32_t stride;
  22     uint32_t nextconbk;
  23     uint32_t debug;
  24
  25     qemu_irq irq;
  26 } BCM2835DMAChan;
  27
  28 #define TYPE_BCM2835_DMA "bcm2835-dma"
  29 typedef struct BCM2835DMAState BCM2835DMAState;
  30 #define BCM2835_DMA(obj) \
  31         OBJECT_CHECK(BCM2835DMAState, (obj), TYPE_BCM2835_DMA)
  32
  33 #define BCM2835_DMA_NCHANS 16
  34
  35 struct BCM2835DMAState {
  36     /*< private >*/
  37     SysBusDevice busdev;
  38     /*< public >*/
  39
  40     MemoryRegion iomem0, iomem15;
  41     MemoryRegion *dma_mr;
  42     AddressSpace dma_as;
  43
  44     BCM2835DMAChan chan[BCM2835_DMA_NCHANS];
  45     uint32_t int_status;
  46     uint32_t enable;
  47 };
  48
  49 #endif