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// SPDX-License-Identifier: GPL-2.0
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/memblock.h>
#include <asm/virt.h>
#include <asm/irq.h>
#define VIRTIO_BUS_NB 128
static struct platform_device * __init virt_virtio_init(unsigned int id)
{
const struct resource res[] = {
DEFINE_RES_MEM(virt_bi_data.virtio.mmio + id * 0x200, 0x200),
DEFINE_RES_IRQ(virt_bi_data.virtio.irq + id),
};
return platform_device_register_simple("virtio-mmio", id,
res, ARRAY_SIZE(res));
}
static int __init virt_platform_init(void)
{
const struct resource goldfish_tty_res[] = {
DEFINE_RES_MEM(virt_bi_data.tty.mmio, 1),
DEFINE_RES_IRQ(virt_bi_data.tty.irq),
};
/* this is the second gf-rtc, the first one is used by the scheduler */
const struct resource goldfish_rtc_res[] = {
DEFINE_RES_MEM(virt_bi_data.rtc.mmio + 0x1000, 0x1000),
DEFINE_RES_IRQ(virt_bi_data.rtc.irq + 1),
};
struct platform_device *pdev1, *pdev2;
struct platform_device *pdevs[VIRTIO_BUS_NB];
unsigned int i;
int ret = 0;
if (!MACH_IS_VIRT)
return -ENODEV;
/* We need this to have DMA'able memory provided to goldfish-tty */
min_low_pfn = 0;
pdev1 = platform_device_register_simple("goldfish_tty",
PLATFORM_DEVID_NONE,
goldfish_tty_res,
ARRAY_SIZE(goldfish_tty_res));
if (IS_ERR(pdev1))
return PTR_ERR(pdev1);
pdev2 = platform_device_register_simple("goldfish_rtc",
PLATFORM_DEVID_NONE,
goldfish_rtc_res,
ARRAY_SIZE(goldfish_rtc_res));
if (IS_ERR(pdev2)) {
ret = PTR_ERR(pdev2);
goto err_unregister_tty;
}
for (i = 0; i < VIRTIO_BUS_NB; i++) {
pdevs[i] = virt_virtio_init(i);
if (IS_ERR(pdevs[i])) {
ret = PTR_ERR(pdevs[i]);
goto err_unregister_rtc_virtio;
}
}
return 0;
err_unregister_rtc_virtio:
while (i > 0)
platform_device_unregister(pdevs[--i]);
platform_device_unregister(pdev2);
err_unregister_tty:
platform_device_unregister(pdev1);
return ret;
}
arch_initcall(virt_platform_init);
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