From 7414dee6be971f51cf0decf6be4d34816751b1ff Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Thu, 11 Jan 2024 11:18:19 +1000
Subject: start parsing fwsec headers

---
 drivers/gpu/drm/nova/bios.rs     | 18 ++++++++++++++++++
 drivers/gpu/drm/nova/fwsec.rs    | 37 +++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/nova/nova_drv.rs |  1 +
 3 files changed, 56 insertions(+)
 create mode 100644 drivers/gpu/drm/nova/fwsec.rs

diff --git a/drivers/gpu/drm/nova/bios.rs b/drivers/gpu/drm/nova/bios.rs
index 30085b9f4273..333d3b8c4e4a 100644
--- a/drivers/gpu/drm/nova/bios.rs
+++ b/drivers/gpu/drm/nova/bios.rs
@@ -5,6 +5,8 @@ use kernel::prelude::*;
 use alloc::vec::Vec;
 use crate::BAR_SIZE;
 
+use crate::fwsec::FalconUCodeDescV3;
+
 use core::ptr::read_unaligned;
 const PROM_OFFSET: usize = 0x300000;
 
@@ -423,6 +425,22 @@ impl Bios {
 		pr_info!("pmu found idx {}\n", found);
 	    }
 	}
+
+	let desc_hdr = self.rd32(pmue.data as isize);
+	pr_info!("flcn {:#x} {} {}\n", desc_hdr, (desc_hdr & 0xffff0000) >> 16,
+		 (desc_hdr & 0xff00) >> 8);
+
+	let ucode_ptr = self.ptr(pmue.data as isize);
+	unsafe {
+	    let ucodedesc: *const FalconUCodeDescV3 = ucode_ptr as *const FalconUCodeDescV3;
+	    pr_info!("ucode desc stored {:#x}, imem {:#x} {:#x} {:#x} dmem {:#x} {:#x}\n",
+		     (*ucodedesc).StoredSize,
+		     (*ucodedesc).IMEMPhysBase,
+		     (*ucodedesc).IMEMLoadSize,
+		     (*ucodedesc).IMEMVirtBase,
+		     (*ucodedesc).DMEMPhysBase,
+		     (*ucodedesc).DMEMLoadSize);
+	}
 	Ok(())
     }
 }
diff --git a/drivers/gpu/drm/nova/fwsec.rs b/drivers/gpu/drm/nova/fwsec.rs
new file mode 100644
index 000000000000..8fad8355722e
--- /dev/null
+++ b/drivers/gpu/drm/nova/fwsec.rs
@@ -0,0 +1,37 @@
+
+#[repr(C)]
+pub(crate) struct FalconUCodeDescV2 {
+    Hdr: u32,
+    StoredSize: u32,
+    UncompressedSize: u32,
+    VirtualEntry: u32,
+    InterfaceOffset: u32,
+    IMEMPhysBase: u32,
+    IMEMLoadSize: u32,
+    IMEMVirtBase: u32,
+    IMEMSecBase: u32,
+    IMEMSecSize: u32,
+    DMEMOffset: u32,
+    DMEMLoadSize: u32,
+    altIMEMLoadSize: u32,
+    altDMEMLoadSize: u32,
+}
+
+#[repr(C)]
+pub(crate) struct FalconUCodeDescV3 {
+    pub(crate) Hdr: u32,
+    pub(crate) StoredSize: u32,
+    PKCDataOffset: u32,
+    InterfaceOffset: u32,
+    pub(crate) IMEMPhysBase: u32,
+    pub(crate) IMEMLoadSize: u32,
+    pub(crate) IMEMVirtBase: u32,
+    pub(crate) DMEMPhysBase: u32,
+    pub(crate) DMEMLoadSize: u32,
+    EngineIdMask: u16,
+    UcodeId: u8,
+    SignatureCount: u8,
+    SignatureVersions: u16,
+    Reserved: u16,
+}
+
diff --git a/drivers/gpu/drm/nova/nova_drv.rs b/drivers/gpu/drm/nova/nova_drv.rs
index 506ecc9f71e5..14a8b6a592ab 100644
--- a/drivers/gpu/drm/nova/nova_drv.rs
+++ b/drivers/gpu/drm/nova/nova_drv.rs
@@ -4,6 +4,7 @@
 
 mod gpu;
 mod bios;
+mod fwsec;
 
 use crate::gpu::CardType;
 use alloc::boxed::Box;
-- 
cgit v1.2.3-58-ga151