Commit 59520dc6 authored by Guenter Roeck's avatar Guenter Roeck Committed by Peter Maydell
Browse files

hw/arm/exynos4210: Add DMA support for the Exynos4210 



QEMU already supports pl330. Instantiate it for Exynos4210.

Relevant part of Linux arch/arm/boot/dts/exynos4.dtsi:

/ {
    soc: soc {
        amba {
            pdma0: pdma@12680000 {
                compatible = "arm,pl330", "arm,primecell";
                reg = <0x12680000 0x1000>;
                interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
                clocks = <&clock CLK_PDMA0>;
                clock-names = "apb_pclk";
                #dma-cells = <1>;
                #dma-channels = <8>;
                #dma-requests = <32>;
            };
            pdma1: pdma@12690000 {
                compatible = "arm,pl330", "arm,primecell";
                reg = <0x12690000 0x1000>;
                interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
                clocks = <&clock CLK_PDMA1>;
                clock-names = "apb_pclk";
                #dma-cells = <1>;
                #dma-channels = <8>;
                #dma-requests = <32>;
            };
            mdma1: mdma@12850000 {
                compatible = "arm,pl330", "arm,primecell";
                reg = <0x12850000 0x1000>;
                interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
                clocks = <&clock CLK_MDMA>;
                clock-names = "apb_pclk";
                #dma-cells = <1>;
                #dma-channels = <8>;
                #dma-requests = <1>;
            };
        };
    };
};

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: default avatarAlistair Francis <alistair.francis@wdc.com>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190520214342.13709-4-philmd@redhat.com
[PMD: Do not set default qdev properties, create the controllers in the SoC
      rather than the board (Peter Maydell), add dtsi in commit message]
Signed-off-by: default avatarPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent e12a0dd2

hw/arm/exynos4210.c

+26 −0
Original line number Diff line number Diff line
@@ -96,6 +96,11 @@ 
/* EHCI */

#define EXYNOS4210_EHCI_BASE_ADDR           0x12580000



/* DMA */

#define EXYNOS4210_PL330_BASE0_ADDR         0x12680000

#define EXYNOS4210_PL330_BASE1_ADDR         0x12690000

#define EXYNOS4210_PL330_BASE2_ADDR         0x12850000



static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,

                                    0x09, 0x00, 0x00, 0x00 };
@@ -160,6 +165,19 @@ static uint64_t exynos4210_calc_affinity(int cpu) 
    return (0x9 << ARM_AFF1_SHIFT) | cpu;

}



static void pl330_create(uint32_t base, qemu_irq irq, int nreq)

{

    SysBusDevice *busdev;

    DeviceState *dev;



    dev = qdev_create(NULL, "pl330");

    qdev_prop_set_uint8(dev, "num_periph_req",  nreq);

    qdev_init_nofail(dev);

    busdev = SYS_BUS_DEVICE(dev);

    sysbus_mmio_map(busdev, 0, base);

    sysbus_connect_irq(busdev, 0, irq);

}



Exynos4210State *exynos4210_init(MemoryRegion *system_mem)

{

    Exynos4210State *s = g_new0(Exynos4210State, 1);
@@ -410,5 +428,13 @@ Exynos4210State *exynos4210_init(MemoryRegion *system_mem) 
    sysbus_create_simple(TYPE_EXYNOS4210_EHCI, EXYNOS4210_EHCI_BASE_ADDR,

            s->irq_table[exynos4210_get_irq(28, 3)]);



    /*** DMA controllers ***/

    pl330_create(EXYNOS4210_PL330_BASE0_ADDR,

                 qemu_irq_invert(s->irq_table[exynos4210_get_irq(35, 1)]), 32);

    pl330_create(EXYNOS4210_PL330_BASE1_ADDR,

                 qemu_irq_invert(s->irq_table[exynos4210_get_irq(36, 1)]), 32);

    pl330_create(EXYNOS4210_PL330_BASE2_ADDR,

                 qemu_irq_invert(s->irq_table[exynos4210_get_irq(34, 1)]), 1);



    return s;

}