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| author | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2024-01-17 21:26:19 +0300 |
|---|---|---|
| committer | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2024-01-18 22:04:34 +0300 |
| commit | 997a55caa1c3b770979836bbfd82b311addf95c7 (patch) | |
| tree | 167f99c546cf91c6d712b6054c48a7701dcb3656 /drivers/gpu/drm/xe/xe_gsc_proxy.h | |
| parent | 6af7ee08279cdb2e1d832f718f2f3c3dcbef5a14 (diff) | |
| download | linux-997a55caa1c3b770979836bbfd82b311addf95c7.tar.xz | |
drm/xe/gsc: Initialize GSC proxy
The GSC uC needs to communicate with the CSME to perform certain
operations. Since the GSC can't perform this communication directly on
platforms where it is integrated in GT, the graphics driver needs to
transfer the messages from GSC to CSME and back. The proxy flow must be
manually started after the GSC is loaded to signal to GSC that we're
ready to handle its messages and allow it to query its init data from
CSME.
Note that the component must be removed before the pci_remove call
completes, so we can't use a drmm helper for it and we need to instead
perform the cleanup as part of the removal flow.
v2: add function documentation, more targeted memory clear, clearer logs
and variable names (Alan)
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240117182621.2653049-2-daniele.ceraolospurio@intel.com
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gsc_proxy.h')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gsc_proxy.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gsc_proxy.h b/drivers/gpu/drm/xe/xe_gsc_proxy.h new file mode 100644 index 000000000000..5dc6321efbaf --- /dev/null +++ b/drivers/gpu/drm/xe/xe_gsc_proxy.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2023 Intel Corporation + */ + +#ifndef _XE_GSC_PROXY_H_ +#define _XE_GSC_PROXY_H_ + +#include <linux/types.h> + +struct xe_gsc; + +int xe_gsc_proxy_init(struct xe_gsc *gsc); +void xe_gsc_proxy_remove(struct xe_gsc *gsc); +int xe_gsc_proxy_start(struct xe_gsc *gsc); + +#endif |