Commit 97fedf01 authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

drm/xe: Use fixed CCS mode when running in SR-IOV mode 



We don't support changing CCS mode when running in SR-IOV mode yet.
When running as a PF driver just apply default ccs_mode=1 that VF
drivers will assume as already applied and fixed.

Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: default avatarLucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240614101415.2208-1-michal.wajdeczko@intel.com
parent de8390b1

drivers/gpu/drm/xe/xe_gt_ccs_mode.c

+8 −1
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include "xe_gt_printk.h"

#include "xe_gt_sysfs.h"

#include "xe_mmio.h"

#include "xe_sriov.h"



static void __xe_gt_apply_ccs_mode(struct xe_gt *gt, u32 num_engines)

{
@@ -75,7 +76,7 @@ static void __xe_gt_apply_ccs_mode(struct xe_gt *gt, u32 num_engines) 


void xe_gt_apply_ccs_mode(struct xe_gt *gt)

{

	if (!gt->ccs_mode)

	if (!gt->ccs_mode || IS_SRIOV_VF(gt_to_xe(gt)))

		return;



	__xe_gt_apply_ccs_mode(gt, gt->ccs_mode);
@@ -110,6 +111,12 @@ ccs_mode_store(struct device *kdev, struct device_attribute *attr, 
	u32 num_engines, num_slices;

	int ret;



	if (IS_SRIOV(xe)) {

		xe_gt_dbg(gt, "Can't change compute mode when running as %s\n",

			  xe_sriov_mode_to_string(xe_device_sriov_mode(xe)));

		return -EOPNOTSUPP;

	}



	ret = kstrtou32(buff, 0, &num_engines);

	if (ret)

		return ret;