diff options
Diffstat (limited to 'hw/arm/bcm2835_peripherals.c')
| -rw-r--r-- | hw/arm/bcm2835_peripherals.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/hw/arm/bcm2835_peripherals.c b/hw/arm/bcm2835_peripherals.c index 48538c9360..3c2a4160cd 100644 --- a/hw/arm/bcm2835_peripherals.c +++ b/hw/arm/bcm2835_peripherals.c @@ -23,6 +23,13 @@ /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */ #define BCM2835_SDHC_CAPAREG 0x52134b4 +/* + * According to Linux driver & DTS, dma channels 0--10 have separate IRQ, + * while channels 11--14 share one IRQ: + */ +#define SEPARATE_DMA_IRQ_MAX 10 +#define ORGATED_DMA_IRQ_COUNT 4 + static void create_unimp(BCM2835PeripheralState *ps, UnimplementedDeviceState *uds, const char *name, hwaddr ofs, hwaddr size) @@ -101,6 +108,11 @@ static void bcm2835_peripherals_init(Object *obj) /* DMA Channels */ object_initialize_child(obj, "dma", &s->dma, TYPE_BCM2835_DMA); + object_initialize_child(obj, "orgated-dma-irq", + &s->orgated_dma_irq, TYPE_OR_IRQ); + object_property_set_int(OBJECT(&s->orgated_dma_irq), "num-lines", + ORGATED_DMA_IRQ_COUNT, &error_abort); + object_property_add_const_link(OBJECT(&s->dma), "dma-mr", OBJECT(&s->gpu_bus_mr)); @@ -322,12 +334,24 @@ static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); - for (n = 0; n <= 12; n++) { + for (n = 0; n <= SEPARATE_DMA_IRQ_MAX; n++) { sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, INTERRUPT_DMA0 + n)); } + if (!qdev_realize(DEVICE(&s->orgated_dma_irq), NULL, errp)) { + return; + } + for (n = 0; n < ORGATED_DMA_IRQ_COUNT; n++) { + sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), + SEPARATE_DMA_IRQ_MAX + 1 + n, + qdev_get_gpio_in(DEVICE(&s->orgated_dma_irq), n)); + } + qdev_connect_gpio_out(DEVICE(&s->orgated_dma_irq), 0, + qdev_get_gpio_in_named(DEVICE(&s->ic), + BCM2835_IC_GPU_IRQ, + INTERRUPT_DMA0 + SEPARATE_DMA_IRQ_MAX + 1)); /* THERMAL */ if (!sysbus_realize(SYS_BUS_DEVICE(&s->thermal), errp)) { |