virtio.c 3.5 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
  4. */
  5. #include <common.h>
  6. #include <dm.h>
  7. #include <virtio_types.h>
  8. #include <virtio.h>
  9. #include <virtio_ring.h>
  10. #include <dm/device-internal.h>
  11. #include <dm/uclass-internal.h>
  12. #include <dm/root.h>
  13. #include <dm/test.h>
  14. #include <test/ut.h>
  15. /* Basic test of the virtio uclass */
  16. static int dm_test_virtio_base(struct unit_test_state *uts)
  17. {
  18. struct udevice *bus, *dev;
  19. u8 status;
  20. /* check probe success */
  21. ut_assertok(uclass_first_device(UCLASS_VIRTIO, &bus));
  22. /* check the child virtio-blk device is bound */
  23. ut_assertok(device_find_first_child(bus, &dev));
  24. ut_assertok(strcmp(dev->name, "virtio-blk#0"));
  25. /* check driver status */
  26. ut_assertok(virtio_get_status(dev, &status));
  27. ut_asserteq(VIRTIO_CONFIG_S_ACKNOWLEDGE, status);
  28. return 0;
  29. }
  30. DM_TEST(dm_test_virtio_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  31. /* Test all of the virtio uclass ops */
  32. static int dm_test_virtio_all_ops(struct unit_test_state *uts)
  33. {
  34. struct udevice *bus, *dev;
  35. struct virtio_dev_priv *uc_priv;
  36. uint offset = 0, len = 0, nvqs = 1;
  37. void *buffer = NULL;
  38. u8 status;
  39. u32 counter;
  40. u64 features;
  41. struct virtqueue *vqs[2];
  42. /* check probe success */
  43. ut_assertok(uclass_first_device(UCLASS_VIRTIO, &bus));
  44. /* check the child virtio-blk device is bound */
  45. ut_assertok(device_find_first_child(bus, &dev));
  46. /*
  47. * fake the virtio device probe by filling in uc_priv->vdev
  48. * which is used by virtio_find_vqs/virtio_del_vqs.
  49. */
  50. uc_priv = dev_get_uclass_priv(bus);
  51. uc_priv->vdev = dev;
  52. /* test virtio_xxx APIs */
  53. ut_assertok(virtio_get_config(dev, offset, buffer, len));
  54. ut_assertok(virtio_set_config(dev, offset, buffer, len));
  55. ut_asserteq(-ENOSYS, virtio_generation(dev, &counter));
  56. ut_assertok(virtio_set_status(dev, VIRTIO_CONFIG_S_DRIVER_OK));
  57. ut_assertok(virtio_get_status(dev, &status));
  58. ut_asserteq(VIRTIO_CONFIG_S_DRIVER_OK, status);
  59. ut_assertok(virtio_reset(dev));
  60. ut_assertok(virtio_get_status(dev, &status));
  61. ut_asserteq(0, status);
  62. ut_assertok(virtio_get_features(dev, &features));
  63. ut_asserteq(VIRTIO_F_VERSION_1, features);
  64. ut_assertok(virtio_set_features(dev));
  65. ut_assertok(virtio_find_vqs(dev, nvqs, vqs));
  66. ut_assertok(virtio_del_vqs(dev));
  67. ut_assertok(virtio_notify(dev, vqs[0]));
  68. return 0;
  69. }
  70. DM_TEST(dm_test_virtio_all_ops, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  71. /* Test of the virtio driver that does not have required driver ops */
  72. static int dm_test_virtio_missing_ops(struct unit_test_state *uts)
  73. {
  74. struct udevice *bus;
  75. /* find the virtio device */
  76. ut_assertok(uclass_find_device(UCLASS_VIRTIO, 1, &bus));
  77. /*
  78. * Probe the device should fail with error -ENOENT.
  79. * See ops check in virtio_uclass_pre_probe().
  80. */
  81. ut_asserteq(-ENOENT, device_probe(bus));
  82. return 0;
  83. }
  84. DM_TEST(dm_test_virtio_missing_ops, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  85. /* Test removal of virtio device driver */
  86. static int dm_test_virtio_remove(struct unit_test_state *uts)
  87. {
  88. struct udevice *bus, *dev;
  89. /* check probe success */
  90. ut_assertok(uclass_first_device(UCLASS_VIRTIO, &bus));
  91. /* check the child virtio-blk device is bound */
  92. ut_assertok(device_find_first_child(bus, &dev));
  93. /* set driver status to VIRTIO_CONFIG_S_DRIVER_OK */
  94. ut_assertok(virtio_set_status(dev, VIRTIO_CONFIG_S_DRIVER_OK));
  95. /* check the device can be successfully removed */
  96. dev->flags |= DM_FLAG_ACTIVATED;
  97. ut_assertok(device_remove(bus, DM_REMOVE_ACTIVE_ALL));
  98. return 0;
  99. }
  100. DM_TEST(dm_test_virtio_remove, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);