[Intel-xe] [PATCH 04/12] drm/xe/gsc: Introduce GSC FW
Daniele Ceraolo Spurio
daniele.ceraolospurio at intel.com
Fri Oct 27 22:29:18 UTC 2023
Add the basic definitions and init function. Same as HuC, GSC is only
supported on the media GT on MTL and newer platforms.
Note that the GSC requires submission resources which can't be allocated
during init (because we don't have the hwconfig yet), so it can't be
marked as loadable at the end of the init function. The allocation of
those resources will come in the patch that makes use of them to load
the FW.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Alan Previn <alan.previn.teres.alexis at intel.com>
Cc: John Harrison <John.C.Harrison at Intel.com>
---
drivers/gpu/drm/xe/Makefile | 1 +
drivers/gpu/drm/xe/xe_gsc.c | 50 +++++++++++++++++++++++++++++
drivers/gpu/drm/xe/xe_gsc.h | 13 ++++++++
drivers/gpu/drm/xe/xe_gsc_types.h | 19 +++++++++++
drivers/gpu/drm/xe/xe_uc.c | 9 ++++--
drivers/gpu/drm/xe/xe_uc_fw.c | 21 ++++++++++--
drivers/gpu/drm/xe/xe_uc_fw.h | 2 ++
drivers/gpu/drm/xe/xe_uc_fw_types.h | 5 +--
drivers/gpu/drm/xe/xe_uc_types.h | 3 ++
9 files changed, 116 insertions(+), 7 deletions(-)
create mode 100644 drivers/gpu/drm/xe/xe_gsc.c
create mode 100644 drivers/gpu/drm/xe/xe_gsc.h
create mode 100644 drivers/gpu/drm/xe/xe_gsc_types.h
diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile
index cee57681732d..474b6044d054 100644
--- a/drivers/gpu/drm/xe/Makefile
+++ b/drivers/gpu/drm/xe/Makefile
@@ -57,6 +57,7 @@ xe-y += xe_bb.o \
xe_exec_queue.o \
xe_force_wake.o \
xe_ggtt.o \
+ xe_gsc.o \
xe_gt.o \
xe_gt_clock.o \
xe_gt_debugfs.o \
diff --git a/drivers/gpu/drm/xe/xe_gsc.c b/drivers/gpu/drm/xe/xe_gsc.c
new file mode 100644
index 000000000000..3f709577d73b
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gsc.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include "xe_gsc.h"
+
+#include "xe_device.h"
+#include "xe_gt.h"
+#include "xe_gt_printk.h"
+#include "xe_uc_fw.h"
+
+static struct xe_gt *
+gsc_to_gt(struct xe_gsc *gsc)
+{
+ return container_of(gsc, struct xe_gt, uc.gsc);
+}
+
+int xe_gsc_init(struct xe_gsc *gsc)
+{
+ struct xe_gt *gt = gsc_to_gt(gsc);
+ struct xe_tile *tile = gt_to_tile(gt);
+ int ret;
+
+ gsc->fw.type = XE_UC_FW_TYPE_GSC;
+
+ /* The GSC uC is only available on the media GT */
+ if (tile->media_gt && (gt != tile->media_gt)) {
+ xe_uc_fw_change_status(&gsc->fw, XE_UC_FIRMWARE_NOT_SUPPORTED);
+ return 0;
+ }
+
+ /*
+ * GSC can be "not supported" where GuC is instead supported, so we
+ * don't want to fail if xe_uc_fw_init() returns an error due to that.
+ * To avoid this problem, check the FW status before the return code.
+ */
+ ret = xe_uc_fw_init(&gsc->fw);
+ if (!xe_uc_fw_is_enabled(&gsc->fw))
+ return 0;
+ else if (ret)
+ goto out;
+
+ return 0;
+
+out:
+ xe_gt_err(gt, "GSC init failed with %d", ret);
+ return ret;
+}
+
diff --git a/drivers/gpu/drm/xe/xe_gsc.h b/drivers/gpu/drm/xe/xe_gsc.h
new file mode 100644
index 000000000000..baa7f21f4204
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gsc.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _XE_GSC_H_
+#define _XE_GSC_H_
+
+#include "xe_gsc_types.h"
+
+int xe_gsc_init(struct xe_gsc *gsc);
+
+#endif
diff --git a/drivers/gpu/drm/xe/xe_gsc_types.h b/drivers/gpu/drm/xe/xe_gsc_types.h
new file mode 100644
index 000000000000..135f156e3736
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gsc_types.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _XE_GSC_TYPES_H_
+#define _XE_GSC_TYPES_H_
+
+#include "xe_uc_fw_types.h"
+
+/**
+ * struct xe_gsc - GSC
+ */
+struct xe_gsc {
+ /** @fw: Generic uC firmware management */
+ struct xe_uc_fw fw;
+};
+
+#endif
diff --git a/drivers/gpu/drm/xe/xe_uc.c b/drivers/gpu/drm/xe/xe_uc.c
index 784f53c5f282..b67154c78dff 100644
--- a/drivers/gpu/drm/xe/xe_uc.c
+++ b/drivers/gpu/drm/xe/xe_uc.c
@@ -6,6 +6,7 @@
#include "xe_uc.h"
#include "xe_device.h"
+#include "xe_gsc.h"
#include "xe_gt.h"
#include "xe_guc.h"
#include "xe_guc_pc.h"
@@ -32,8 +33,8 @@ int xe_uc_init(struct xe_uc *uc)
int ret;
/*
- * We call the GuC/HuC init functions even if GuC submission is off to
- * correctly move our tracking of the FW state to "disabled".
+ * We call the GuC/HuC/GSC init functions even if GuC submission is off
+ * to correctly move our tracking of the FW state to "disabled".
*/
ret = xe_guc_init(&uc->guc);
@@ -44,6 +45,10 @@ int xe_uc_init(struct xe_uc *uc)
if (ret)
goto err;
+ ret = xe_gsc_init(&uc->gsc);
+ if (ret)
+ goto err;
+
if (!xe_device_uc_enabled(uc_to_xe(uc)))
return 0;
diff --git a/drivers/gpu/drm/xe/xe_uc_fw.c b/drivers/gpu/drm/xe/xe_uc_fw.c
index 1f7dac394a1d..af3e5cba606f 100644
--- a/drivers/gpu/drm/xe/xe_uc_fw.c
+++ b/drivers/gpu/drm/xe/xe_uc_fw.c
@@ -158,11 +158,18 @@ XE_HUC_FIRMWARE_DEFS(XE_UC_MODULE_FIRMWARE,
static struct xe_gt *
__uc_fw_to_gt(struct xe_uc_fw *uc_fw, enum xe_uc_fw_type type)
{
- if (type == XE_UC_FW_TYPE_GUC)
+ XE_WARN_ON(type >= XE_UC_FW_NUM_TYPES);
+
+ switch (type) {
+ case XE_UC_FW_TYPE_GUC:
return container_of(uc_fw, struct xe_gt, uc.guc.fw);
+ case XE_UC_FW_TYPE_HUC:
+ return container_of(uc_fw, struct xe_gt, uc.huc.fw);
+ case XE_UC_FW_TYPE_GSC:
+ return container_of(uc_fw, struct xe_gt, uc.gsc.fw);
+ }
- XE_WARN_ON(type != XE_UC_FW_TYPE_HUC);
- return container_of(uc_fw, struct xe_gt, uc.huc.fw);
+ return NULL;
}
static struct xe_gt *uc_fw_to_gt(struct xe_uc_fw *uc_fw)
@@ -197,6 +204,14 @@ uc_fw_auto_select(struct xe_device *xe, struct xe_uc_fw *uc_fw)
u32 count;
int i;
+ /*
+ * GSC FW support is still not fully in place, so we're not defining
+ * the FW blob yet because we don't want the driver to attempt to load
+ * it until we're ready for it.
+ */
+ if (uc_fw->type == XE_UC_FW_TYPE_GSC)
+ return;
+
xe_assert(xe, uc_fw->type < ARRAY_SIZE(blobs_all));
entries = blobs_all[uc_fw->type].entries;
count = blobs_all[uc_fw->type].count;
diff --git a/drivers/gpu/drm/xe/xe_uc_fw.h b/drivers/gpu/drm/xe/xe_uc_fw.h
index 1d1a0c156cdf..d4682b0276e2 100644
--- a/drivers/gpu/drm/xe/xe_uc_fw.h
+++ b/drivers/gpu/drm/xe/xe_uc_fw.h
@@ -96,6 +96,8 @@ static inline const char *xe_uc_fw_type_repr(enum xe_uc_fw_type type)
return "GuC";
case XE_UC_FW_TYPE_HUC:
return "HuC";
+ case XE_UC_FW_TYPE_GSC:
+ return "GSC";
}
return "uC";
}
diff --git a/drivers/gpu/drm/xe/xe_uc_fw_types.h b/drivers/gpu/drm/xe/xe_uc_fw_types.h
index e4774c560e67..239256bfdb07 100644
--- a/drivers/gpu/drm/xe/xe_uc_fw_types.h
+++ b/drivers/gpu/drm/xe/xe_uc_fw_types.h
@@ -55,9 +55,10 @@ enum xe_uc_fw_status {
enum xe_uc_fw_type {
XE_UC_FW_TYPE_GUC = 0,
- XE_UC_FW_TYPE_HUC
+ XE_UC_FW_TYPE_HUC,
+ XE_UC_FW_TYPE_GSC
};
-#define XE_UC_FW_NUM_TYPES 2
+#define XE_UC_FW_NUM_TYPES 3
/**
* struct xe_uc_fw_version - Version for XE micro controller firmware
diff --git a/drivers/gpu/drm/xe/xe_uc_types.h b/drivers/gpu/drm/xe/xe_uc_types.h
index 49bef6498b85..9924e4484866 100644
--- a/drivers/gpu/drm/xe/xe_uc_types.h
+++ b/drivers/gpu/drm/xe/xe_uc_types.h
@@ -6,6 +6,7 @@
#ifndef _XE_UC_TYPES_H_
#define _XE_UC_TYPES_H_
+#include "xe_gsc_types.h"
#include "xe_guc_types.h"
#include "xe_huc_types.h"
#include "xe_wopcm_types.h"
@@ -18,6 +19,8 @@ struct xe_uc {
struct xe_guc guc;
/** @huc: HuC */
struct xe_huc huc;
+ /** @gsc: Graphics Security Controller */
+ struct xe_gsc gsc;
/** @wopcm: WOPCM */
struct xe_wopcm wopcm;
};
--
2.41.0
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