| 38 | } |
| 39 | |
| 40 | static void virtio_input_cfg_bits(struct virtio_input_device *virtio_input_dev, |
| 41 | rt_uint8_t select, rt_uint8_t subsel, rt_ubase_t *bits, rt_uint32_t bitcount) |
| 42 | { |
| 43 | int i; |
| 44 | rt_uint32_t bit; |
| 45 | rt_uint8_t bytes; |
| 46 | rt_uint8_t *virtio_bits; |
| 47 | void *config_base = virtio_input_dev->config; |
| 48 | rt_off_t offset = (rt_size_t)&((struct virtio_input_config *)0)->bitmap; |
| 49 | |
| 50 | bytes = virtio_input_cfg_select(virtio_input_dev, select, subsel); |
| 51 | |
| 52 | if (bytes == 0) |
| 53 | { |
| 54 | return; |
| 55 | } |
| 56 | |
| 57 | if (bitcount > bytes * 8) |
| 58 | { |
| 59 | bitcount = bytes * 8; |
| 60 | } |
| 61 | |
| 62 | /* |
| 63 | * Bitmap in virtio config space is a simple stream of bytes, |
| 64 | * with the first byte carrying bits 0-7, second bits 8-15 and |
| 65 | * so on. |
| 66 | */ |
| 67 | virtio_bits = rt_malloc(bytes); |
| 68 | |
| 69 | if (virtio_bits == RT_NULL) |
| 70 | { |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | for (i = 0; i < bytes; ++i) |
| 75 | { |
| 76 | void *buffer = (void *)virtio_bits + i; |
| 77 | |
| 78 | if (virtio_input_dev->virtio_dev.mmio_config->version == 1) |
| 79 | { |
| 80 | HWREG8(config_base + offset + i) = *((rt_uint8_t *)buffer); |
| 81 | } |
| 82 | else |
| 83 | { |
| 84 | rt_memcpy(config_base + offset + i, buffer, sizeof(rt_uint8_t)); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | for (bit = 0; bit < bitcount; ++bit) |
| 89 | { |
| 90 | if (virtio_bits[bit / 8] & (1 << (bit % 8))) |
| 91 | { |
| 92 | _set_bit(bit, bits); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | rt_free(virtio_bits); |
| 97 |
no test coverage detected