150     uint32_t tmp;  in pci_enable_msi()  local
190         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_enable_msi()
191         tmp |= (1U << 31);  in pci_enable_msi()
192         pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr, tmp);  in pci_enable_msi()
197         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_enable_msi()
198         message_control = (tmp >> 16) & 0xffff;  in pci_enable_msi()
210         tmp = msi_desc->msg.data;  in pci_enable_msi()
212             pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr + 0xc, tmp);  in pci_enable_msi()
214             pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr + 0x8, tmp);  in pci_enable_msi()
217         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_enable_msi()
218         tmp |= (1 << 16);  in pci_enable_msi()
219         pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr, tmp);  in pci_enable_msi()
235     uint32_t tmp;  in pci_start_msi()  local
244         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_start_msi()
246         if (tmp & 0xff != 0x5)  in pci_start_msi()
250         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_start_msi()
251         tmp |= (1 << 16);  in pci_start_msi()
252         pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr, tmp);  in pci_start_msi()
261         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_start_msi()
263         if (tmp & 0xff != 0x5)  in pci_start_msi()
267         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_start_msi()
268         tmp |= (1 << 16);  in pci_start_msi()
269         pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr, tmp);  in pci_start_msi()
293     uint32_t tmp;  in pci_disable_msi()  local
302         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_disable_msi()
304         if (tmp & 0xff != 0x5)  in pci_disable_msi()
308         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_disable_msi()
309         tmp &= (~(1 << 16));  in pci_disable_msi()
310         pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr, tmp);  in pci_disable_msi()
319         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_disable_msi()
321         if (tmp & 0xff != 0x5)  in pci_disable_msi()
325         tmp = pci_read_config(ptr->bus, ptr->device, ptr->func, cap_ptr); // 读取cap+0x0处的值  in pci_disable_msi()
326         tmp &= (~(1 << 16));  in pci_disable_msi()
327         pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr, tmp);  in pci_disable_msi()