To facilitate a structured staging handler, a set of functions will be
introduced. Define 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>
Tested-by: Anselm Busse <abusse@amazon.de>
---
V4 -> V5: Drop the ucode_ptr field (Dave)
V1 -> V2: New patch
Prior to V2, local variables were used to track state values, with the
intention of improving readability by explicitly passing them between
functions. However, given feedbacks, introducing a dedicated data
structure looks to provide a benefit by simplifying the main loop.
---
arch/x86/kernel/cpu/microcode/intel.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
index d309fb1f058f..3ca22457d839 100644
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -54,6 +54,25 @@ struct extended_sigtable {
struct extended_signature sigs[];
};
+/**
+ * struct staging_state - Tracks 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
+ * @state: Current state of the staging process
+ */
+struct staging_state {
+ void __iomem *mmio_base;
+ unsigned int ucode_len;
+ unsigned int chunk_size;
+ unsigned int bytes_sent;
+ unsigned int offset;
+ enum ucode_state state;
+};
+
#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))
--
2.48.1