x86/microcode/intel: Define staging state struct

Define a staging_state struct to simplify function prototypes by consolidating
relevant data, instead of passing multiple local variables.

Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Anselm Busse <abusse@amazon.de>
Link: https://lore.kernel.org/20250320234104.8288-1-chang.seok.bae@intel.com

diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
index 216595a4556439036bb856df0443714a42267cb1..d49a4e6ea4770d918748d1e7178150894cc8cb17 100644 (file)
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -54,6 +54,23 @@ struct extended_sigtable {
        struct extended_signature       sigs[];
 };
 
+/**
+ * struct staging_state - Track the current staging process state
+ *
+ * @mmio_base:         MMIO base address for staging
+ * @ucode_len:         Total size of the microcode image
+ * @chunk_size:                Size of each data piece
+ * @bytes_sent:                Total bytes transmitted so far
+ * @offset:            Current offset in the microcode image
+ */
+struct staging_state {
+       void __iomem            *mmio_base;
+       unsigned int            ucode_len;
+       unsigned int            chunk_size;
+       unsigned int            bytes_sent;
+       unsigned int            offset;
+};
+
 #define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
 #define EXT_HEADER_SIZE                (sizeof(struct extended_sigtable))
 #define EXT_SIGNATURE_SIZE     (sizeof(struct extended_signature))