[PATCH 2/6] drm/xe: Keep reference to device descriptor

[Michal Wajdeczko <michal.wajdeczko@intel.com>]

While we already use struct intel_device_info, which has some fields
copied or derived from the original struct xe_device_desc, we also
want to keep the reference to the whole device descriptor, in case
we would like to access more non-mutable device parameters.
Similarly keep the reference to matched subplatform descriptor.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
---
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Gustavo Sousa <gustavo.sousa@intel.com>
---
 drivers/gpu/drm/xe/tests/xe_pci.c    | 2 ++
 drivers/gpu/drm/xe/xe_device_types.h | 6 ++++++
 drivers/gpu/drm/xe/xe_pci.c          | 2 ++
 3 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/xe/tests/xe_pci.c b/drivers/gpu/drm/xe/tests/xe_pci.c
index 4965a01f6ba5..48d5ee478fe6 100644
--- a/drivers/gpu/drm/xe/tests/xe_pci.c
+++ b/drivers/gpu/drm/xe/tests/xe_pci.c
@@ -374,6 +374,8 @@ int xe_pci_fake_device_init(struct xe_device *xe)
 		return -ENODEV;
 
 done:
+	xe->desc = desc;
+	xe->subplatform_desc = subplatform_desc;
 	xe->sriov.__mode = data && data->sriov_mode ?
 			   data->sriov_mode : XE_SRIOV_MODE_NONE;
 
diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h
index 180d450a6deb..6406a1228c38 100644
--- a/drivers/gpu/drm/xe/xe_device_types.h
+++ b/drivers/gpu/drm/xe/xe_device_types.h
@@ -116,6 +116,12 @@ struct xe_device {
 	/** @devcoredump: device coredump */
 	struct xe_devcoredump devcoredump;
 
+	/** @desc: device descriptor */
+	const struct xe_device_desc *desc;
+
+	/** @subplatform_desc: subplatform descriptor */
+	const struct xe_subplatform_desc *subplatform_desc;
+
 	/** @info: device info */
 	struct intel_device_info {
 		/** @info.platform_name: platform name */
diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c
index 47fad696545c..191e69fb0e3d 100644
--- a/drivers/gpu/drm/xe/xe_pci.c
+++ b/drivers/gpu/drm/xe/xe_pci.c
@@ -1208,6 +1208,8 @@ static int __xe_pci_probe(struct pci_dev *pdev, const struct xe_device_desc *des
 	if (IS_ERR(xe))
 		return PTR_ERR(xe);
 
+	xe->desc = desc;
+	xe->subplatform_desc = subplatform_desc;
 	xe->devres_group = group;
 
 	pci_set_drvdata(pdev, &xe->drm);
-- 
2.47.1