hw/virtio/virtio-acpi.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * virtio ACPI Support
   4  *
   5  */
   6
   7 #include "qemu/osdep.h"
   8 #include "hw/virtio/virtio-acpi.h"
   9 #include "hw/acpi/aml-build.h"
  10
  11 void virtio_acpi_dsdt_add(Aml *scope, const hwaddr base, const hwaddr size,
  12                           uint32_t mmio_irq, long int start_index, int num)
  13 {
  14     hwaddr virtio_base = base;
  15     uint32_t irq = mmio_irq;
  16     long int i;
  17
  18     for (i = start_index; i < start_index + num; i++) {
  19         Aml *dev = aml_device("VR%02u", (unsigned)i);
  20         aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
  21         aml_append(dev, aml_name_decl("_UID", aml_int(i)));
  22         aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
  23
  24         Aml *crs = aml_resource_template();
  25         aml_append(crs, aml_memory32_fixed(virtio_base, size, AML_READ_WRITE));
  26         aml_append(crs,
  27                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
  28                                  AML_EXCLUSIVE, &irq, 1));
  29         aml_append(dev, aml_name_decl("_CRS", crs));
  30         aml_append(scope, dev);
  31         virtio_base += size;
  32         irq++;
  33     }
  34 }