libpci/src/virtual_device.c

23 static uint8_t libpci_vdevice_rebase_callback_ioread(libpci_vdevice_t* vdevice, int offset) {
25     assert(offset >= PCI_BASE_ADDRESS_0 && offset < PCI_BASE_ADDRESS_5 + 4);
27     int index = (offset - PCI_BASE_ADDRESS_0) / 4;
28     int byte_offset = (offset - PCI_BASE_ADDRESS_0) % 4;
34 static void libpci_vdevice_rebase_callback_iowrite(libpci_vdevice_t* vdevice, int offset,
37     assert(offset >= PCI_BASE_ADDRESS_0 && offset < PCI_BASE_ADDRESS_5 + 4);
39     int index = (offset - PCI_BASE_ADDRESS_0) / 4;
40     int byte_offset = (offset - PCI_BASE_ADDRESS_0) % 4;
77 void libpci_vdevice_set_mode(libpci_vdevice_t* self, int offset,
80     assert(offset >= 0 && offset < PCI_STD_HEADER_SIZEOF);
82     int sz = libpci_device_cfg_sizeof(offset);
86         self->mode[offset + i] = m;
191 uint32_t libpci_vdevice_ioread(libpci_vdevice_t* self, int offset, int size){
194     assert(offset >= 0);
200     if ((offset + size) >= PCI_STD_HEADER_SIZEOF) {
202             printf("ERROR: device tried to access extended PCI config space offset %d, but "
204                    "misconfiguration.\n", offset + size);
213                                offset, size);
218         libpci_vdevice_mode_t* m = &self->mode[offset + i];
227                                            offset + i);
231             printf("PCI_VDEVICE_MODE_FATAL_ERROR triggered for offset %d size %d\n", offset, size);
239             result_byte = m->callback_ioread(self, offset + i);
252 void libpci_vdevice_iowrite(libpci_vdevice_t* self, int offset, int size, uint32_t val) {
255     assert(offset >= 0);
259     if ((offset + size) >= PCI_STD_HEADER_SIZEOF) {
261             printf("ERROR: device tried to access extended PCI config space offset %d, but "
263                    "misconfiguration.\n", offset + size);
272                          offset, val, size);
279         libpci_vdevice_mode_t* m = &self->mode[offset + i];
290                          offset, val, size);
296         libpci_vdevice_mode_t* m = &self->mode[offset + i];
301             printf("    writing 0x%x into offset %d (total val = 0x%x)\n", val_p[i], offset + i, val);
305                               offset + i, val_p[i]);
309             printf("PCI_VDEVICE_MODE_FATAL_ERROR triggered for offset %d size %d\n", offset, size);
317             m->callback_iowrite(self, offset + i, ((uint8_t*)(&val))[i]);