--expansion-bay: Print PCIe config

EXAMPLES.md

@@ -225,6 +225,8 @@ Expansion Bay
   Door  closed:  true
   Board:         DualInterposer
   Serial Number: FRAXXXXXXXXXXXXXXX
+  Config:        Pcie4x2
+  Vendor:        SsdHolder
 ```
 
 ## Check charger and battery status (Framework 12/13/16)

framework_lib/src/chromium_ec/command.rs

@@ -96,6 +96,7 @@ pub enum EcCommands {
     GetHwDiag = 0x3E1C,
     /// Get gpu bay serial
     GetGpuSerial = 0x3E1D,
+    GetGpuPcie = 0x3E1E,
     /// Set gpu bay serial and program structure
     ProgramGpuEeprom = 0x3E1F,
 }

framework_lib/src/chromium_ec/commands.rs

@@ -1129,6 +1129,43 @@ impl EcRequest<EcResponseGetGpuSerial> for EcRequestGetGpuSerial {
     }
 }
 
+#[repr(C, packed)]
+pub struct EcRequestGetGpuPcie {}
+
+#[repr(u8)]
+#[derive(Debug, FromPrimitive)]
+pub enum GpuPcieConfig {
+    /// PCIe 8x1
+    Pcie8x1 = 0,
+    /// PCIe 4x1
+    Pcie4x1 = 1,
+    /// PCIe 4x2
+    Pcie4x2 = 2,
+}
+
+#[repr(u8)]
+#[derive(Debug, FromPrimitive)]
+pub enum GpuVendor {
+    Initializing = 0x00,
+    FanOnly = 0x01,
+    GpuAmdR23M = 0x02,
+    SsdHolder = 0x03,
+    PcieAccessory = 0x4,
+}
+
+#[repr(C, packed)]
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+pub struct EcResponseGetGpuPcie {
+    pub gpu_pcie_config: u8,
+    pub gpu_vendor: u8,
+}
+
+impl EcRequest<EcResponseGetGpuPcie> for EcRequestGetGpuPcie {
+    fn command_id() -> EcCommands {
+        EcCommands::GetGpuPcie
+    }
+}
+
 #[repr(u8)]
 pub enum SetGpuSerialMagic {
     /// 7700S config magic value

framework_lib/src/chromium_ec/mod.rs

@@ -1000,6 +1000,20 @@ impl CrosEc {
             println!("  Serial Number: Unknown");
         }
 
+        let res = EcRequestGetGpuPcie {}.send_command(self)?;
+        let config: Option<GpuPcieConfig> = FromPrimitive::from_u8(res.gpu_pcie_config);
+        let vendor: Option<GpuVendor> = FromPrimitive::from_u8(res.gpu_vendor);
+        if let Some(config) = config {
+            println!("  Config:        {:?}", config);
+        } else {
+            println!("  Config:        Unknown ({})", res.gpu_pcie_config);
+        }
+        if let Some(vendor) = vendor {
+            println!("  Vendor:        {:?}", vendor);
+        } else {
+            println!("  Vendor:        Unknown ({})", res.gpu_vendor);
+        }
+
         Ok(())
     }