Dump device BARs in logs

src/main.rs

@@ -8,7 +8,7 @@ use device_types::{Class, InvalidClass};
 use pci_rpc::Server;
 use serde::{Deserialize, Serialize};
 use spin::Mutex;
-use x86_64::instructions::port::{Port, PortWriteOnly};
+use x86_64::{instructions::port::{Port, PortWriteOnly}, registers::control};
 
 pub mod device_types;
 
@@ -374,6 +374,29 @@ fn main() {
                 device.common.header_type,
             )
         ).unwrap();
+        if let &ConfigTypeSpecific::Type0(cfg_type0) = &device.type_specific {
+            let accessor = ConfigAccessor::new(device.bus, device.device, device.function);
+            for (i, &bar) in cfg_type0.bars.iter().enumerate() {
+                if bar == 0x0 {
+                    continue;
+                }
+                let bar_idx = (i + 0x4) as u8;
+                accessor.write(bar_idx, 0xFFFF_FFFF);
+                let bar_tmp = accessor.read(bar_idx);
+                let info_bits = if bar & 0x1 == 1 {
+                    bar_tmp & !0x3
+                } else {
+                    bar_tmp & !0xF
+                };
+                let size = !(info_bits) + 1;
+                accessor.write(bar_idx, bar);
+                if bar & 0x1 == 1 {
+                    syslog_client.send_text_message("pci", format!("BAR {}: IO {:#x}, size {:#x}", i, bar & (!0x3), size));
+                } else {
+                    syslog_client.send_text_message("pci", format!("BAR {}: MEM {:#x}, size {:#x}", i, bar & (!0xF), size));
+                }
+            }
+        }
         let driver = config
             .mappings
             .iter()