1 // SPDX-License-Identifier: GPL-2.0
3 #include <linux/platform_device.h>
4 #include <linux/interrupt.h>
5 #include <linux/memblock.h>
9 #define VIRTIO_BUS_NB 128
11 static struct platform_device * __init virt_virtio_init(unsigned int id)
13 const struct resource res[] = {
14 DEFINE_RES_MEM(virt_bi_data.virtio.mmio + id * 0x200, 0x200),
15 DEFINE_RES_IRQ(virt_bi_data.virtio.irq + id),
18 return platform_device_register_simple("virtio-mmio", id,
19 res, ARRAY_SIZE(res));
22 static int __init virt_platform_init(void)
24 const struct resource goldfish_tty_res[] = {
25 DEFINE_RES_MEM(virt_bi_data.tty.mmio, 1),
26 DEFINE_RES_IRQ(virt_bi_data.tty.irq),
28 /* this is the second gf-rtc, the first one is used by the scheduler */
29 const struct resource goldfish_rtc_res[] = {
30 DEFINE_RES_MEM(virt_bi_data.rtc.mmio + 0x1000, 0x1000),
31 DEFINE_RES_IRQ(virt_bi_data.rtc.irq + 1),
33 struct platform_device *pdev1, *pdev2;
34 struct platform_device *pdevs[VIRTIO_BUS_NB];
41 /* We need this to have DMA'able memory provided to goldfish-tty */
44 pdev1 = platform_device_register_simple("goldfish_tty",
47 ARRAY_SIZE(goldfish_tty_res));
49 return PTR_ERR(pdev1);
51 pdev2 = platform_device_register_simple("goldfish_rtc",
54 ARRAY_SIZE(goldfish_rtc_res));
57 goto err_unregister_tty;
60 for (i = 0; i < VIRTIO_BUS_NB; i++) {
61 pdevs[i] = virt_virtio_init(i);
62 if (IS_ERR(pdevs[i])) {
63 ret = PTR_ERR(pdevs[i]);
64 goto err_unregister_rtc_virtio;
70 err_unregister_rtc_virtio:
72 platform_device_unregister(pdevs[--i]);
73 platform_device_unregister(pdev2);
75 platform_device_unregister(pdev1);
80 arch_initcall(virt_platform_init);