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sparc32_dma: introduce new SPARC32_DMA type container object

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Create a new SPARC32_DMA container object (including an appropriate container
memory region) and add instances of the SPARC32_ESPDMA_DEVICE and
SPARC32_LEDMA_DEVICE as child objects. The benefit is that most of the gpio
wiring complexity between esp/espdma and lance/ledma is now hidden within the
SPARC32_DMA realize function.

Since the sun4m IOMMU is already QOMified we can find a reference to
it using object_resolve_path_type() allowing us to completely remove all external
references to the iommu pointer.

Finally we rework sun4m's sparc32_dma_init() to invoke the new SPARC32_DMA object
and wire up the remaining board memory regions/IRQs.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Artyom Tarasenko <atar4qemu@gmail.com>
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Mark Cave-Ayland 2017-10-14 13:22:22 +01:00
parent e6ca02a46a
commit 6aa62ed6b8
3 changed files with 114 additions and 34 deletions
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12
include/hw/sparc/sparc32_dma.h
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@ -44,6 +44,18 @@ typedef struct LEDMADeviceState {
SysBusPCNetState *lance;
} LEDMADeviceState;
#define TYPE_SPARC32_DMA "sparc32-dma"
#define SPARC32_DMA(obj) OBJECT_CHECK(SPARC32DMAState, (obj), \
TYPE_SPARC32_DMA)
typedef struct SPARC32DMAState {
SysBusDevice parent_obj;
MemoryRegion dmamem;
ESPDMADeviceState *espdma;
LEDMADeviceState *ledma;
} SPARC32DMAState;
/* sparc32_dma.c */
void ledma_memory_read(void *opaque, hwaddr addr,
uint8_t *buf, int len, int do_bswap);