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drm/i915/uc: HuC firmware can't be supported without GuC

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There is no point in selecting HuC firmware if GuC is unsupported
or it was already disabled, as we need GuC to authenticate HuC.

While around, make uc_fw_init_early work without direct access
to whole i915, pass only needed platform/rev info.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807170034.8440-3-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2019-08-07 17:00:29 +00:00 committed by Chris Wilson
parent 12be4a4c75
commit 2399ab52da
4 changed files with 21 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
View File

@ -39,7 +39,10 @@
*/
void intel_guc_fw_init_early(struct intel_guc *guc)
{
intel_uc_fw_init_early(&guc->fw, INTEL_UC_FW_TYPE_GUC, guc_to_gt(guc)->i915);
struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
intel_uc_fw_init_early(&guc->fw, INTEL_UC_FW_TYPE_GUC, HAS_GT_UC(i915),
INTEL_INFO(i915)->platform, INTEL_REVID(i915));
}
static void guc_prepare_xfer(struct intel_uncore *uncore)

8
drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
View File

@ -31,7 +31,13 @@
*/
void intel_huc_fw_init_early(struct intel_huc *huc)
{
intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC, huc_to_gt(huc)->i915);
struct intel_gt *gt = huc_to_gt(huc);
struct intel_uc *uc = &gt->uc;
struct drm_i915_private *i915 = gt->i915;
intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC,
intel_uc_supports_guc(uc),
INTEL_INFO(i915)->platform, INTEL_REVID(i915));
}
/**

13
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
View File

@ -171,16 +171,18 @@ __uc_fw_override(struct intel_uc_fw *uc_fw)
/**
* intel_uc_fw_init_early - initialize the uC object and select the firmware
* @i915: device private
* @uc_fw: uC firmware
* @type: type of uC
* @supported: is uC support possible
* @platform: platform identifier
* @rev: hardware revision
*
* Initialize the state of our uC object and relevant tracking and select the
* firmware to fetch and load.
*/
void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
enum intel_uc_fw_type type,
struct drm_i915_private *i915)
enum intel_uc_fw_type type, bool supported,
enum intel_platform platform, u8 rev)
{
/*
* we use FIRMWARE_UNINITIALIZED to detect checks against uc_fw->status
@ -192,9 +194,8 @@ void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
uc_fw->type = type;
if (HAS_GT_UC(i915) && likely(!__uc_fw_override(uc_fw)))
__uc_fw_auto_select(uc_fw, INTEL_INFO(i915)->platform,
INTEL_REVID(i915));
if (supported && likely(!__uc_fw_override(uc_fw)))
__uc_fw_auto_select(uc_fw, platform, rev);
if (uc_fw->path && *uc_fw->path)
uc_fw->status = INTEL_UC_FIRMWARE_SELECTED;

5
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
View File

@ -27,6 +27,7 @@
#include <linux/types.h>
#include "intel_uc_fw_abi.h"
#include "intel_device_info.h"
#include "i915_gem.h"
struct drm_printer;
@ -170,8 +171,8 @@ static inline u32 intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw)
}
void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
enum intel_uc_fw_type type,
struct drm_i915_private *i915);
enum intel_uc_fw_type type, bool supported,
enum intel_platform platform, u8 rev);
void intel_uc_fw_fetch(struct intel_uc_fw *uc_fw,
struct drm_i915_private *i915);
void intel_uc_fw_cleanup_fetch(struct intel_uc_fw *uc_fw);