drm/i915/gvt: Add mmio iterator intel_gvt_for_each_tracked_mmio()
This patch add a function intel_gvt_for_each_tracked_mmio() to
iterate each tracked mmio. The caller don't be aware of how the
tracked mmios are presented internally.
v2: remove snapshot_hw_mmio_registers().
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index 56ee588..4f8d470 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -2971,6 +2971,40 @@ int intel_gvt_setup_mmio_info(struct intel_gvt *gvt)
return ret;
}
+/**
+ * intel_gvt_for_each_tracked_mmio - iterate each tracked mmio
+ * @gvt: a GVT device
+ * @handler: the handler
+ * @data: private data given to handler
+ *
+ * Returns:
+ * Zero on success, negative error code if failed.
+ */
+int intel_gvt_for_each_tracked_mmio(struct intel_gvt *gvt,
+ int (*handler)(struct intel_gvt *gvt, u32 offset, void *data),
+ void *data)
+{
+ struct gvt_mmio_block *block = gvt->mmio.mmio_block;
+ struct intel_gvt_mmio_info *e;
+ int i, j, ret;
+
+ hash_for_each(gvt->mmio.mmio_info_table, i, e, node) {
+ ret = handler(gvt, e->offset, data);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < gvt->mmio.num_mmio_block; i++, block++) {
+ for (j = 0; j < block->size; j += 4) {
+ ret = handler(gvt,
+ INTEL_GVT_MMIO_OFFSET(block->offset) + j,
+ data);
+ if (ret)
+ return ret;
+ }
+ }
+ return 0;
+}
/**
* intel_vgpu_default_mmio_read - default MMIO read handler