i915/gvt: Separate the MMIO tracking table from GVT-g

To support the new mdev interfaces and the re-factor patches from
Christoph, which moves the GVT-g code into a dedicated module, the GVT-g
MMIO tracking table needs to be separated from GVT-g.

v9:
- Fix a problem might cause kernel panic.
- Remove the redaundant definitation of intel_get_device_type(). (Jani)
- Sort the list of header reference in intel_gvt_mmio.c (Jani)
- Include minimum header insted in intel_gvt_mmio.c (Jani)

v8:
- Use SPDX header in the intel_gvt_mmio_table.c
- Reference the gvt.h with path. (Jani)
- Add a missing fix on mmio emulation path during the debug.
- Fix a building problem on refreshed gvt-staging branch. (Christoph)

v7:
- Keep the marcos of device generation in GVT-g. (Christoph, Jani)

v6:
- Move the mmio_table.c into i915. (Christoph)
- Keep init_device_info and related structures in GVT-g. (Christoph)
- Refine the callbacks of the iterator. (Christoph)
- Move the flags of MMIO register defination to GVT-g. (Chrsitoph)
- Move the mmio block handling to GVT-g.

v5:
- Re-design the mmio table framework. (Christoph)

v4:
- Fix the errors of patch checking scripts.

v3:
- Fix the errors when CONFIG_DRM_I915_WERROR is turned on. (Jani)

v2:
- Implement a mmio table instead of generating it by marco in i915. (Jani)

Cc: Christoph Hellwig <hch@lst.de>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Vivi Rodrigo <rodrigo.vivi@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220407071945.72148-2-zhi.a.wang@intel.com

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_gvt.h b/drivers/gpu/drm/i915/intel_gvt.h
index d7d3fb6186fd..3a2563ad50f8 100644
--- a/drivers/gpu/drm/i915/intel_gvt.h
+++ b/drivers/gpu/drm/i915/intel_gvt.h
@@ -24,9 +24,19 @@
 #ifndef _INTEL_GVT_H_
 #define _INTEL_GVT_H_
 
+#include <linux/types.h>
+
 struct drm_i915_private;
 
 #ifdef CONFIG_DRM_I915_GVT
+
+struct intel_gvt_mmio_table_iter {
+	struct drm_i915_private *i915;
+	void *data;
+	int (*handle_mmio_cb)(struct intel_gvt_mmio_table_iter *iter,
+			      u32 offset, u32 size);
+};
+
 int intel_gvt_init(struct drm_i915_private *dev_priv);
 void intel_gvt_driver_remove(struct drm_i915_private *dev_priv);
 int intel_gvt_init_device(struct drm_i915_private *dev_priv);
@@ -34,6 +44,7 @@ void intel_gvt_clean_device(struct drm_i915_private *dev_priv);
 int intel_gvt_init_host(void);
 void intel_gvt_sanitize_options(struct drm_i915_private *dev_priv);
 void intel_gvt_resume(struct drm_i915_private *dev_priv);
+int intel_gvt_iterate_mmio_table(struct intel_gvt_mmio_table_iter *iter);
 #else
 static inline int intel_gvt_init(struct drm_i915_private *dev_priv)
 {
@@ -51,6 +62,14 @@ static inline void intel_gvt_sanitize_options(struct drm_i915_private *dev_priv)
 static inline void intel_gvt_resume(struct drm_i915_private *dev_priv)
 {
 }
+
+struct intel_gvt_mmio_table_iter {
+};
+
+static inline int intel_gvt_iterate_mmio_table(struct intel_gvt_mmio_table_iter *iter)
+{
+	return 0;
+}
 #endif
 
 #endif /* _INTEL_GVT_H_ */