1 // SPDX-License-Identifier: MIT
30 	 * For example, if there are four compute slices available, the  in __xe_gt_apply_ccs_mode()
31 	 * assignment of compute slices to compute engines would be,  in __xe_gt_apply_ccs_mode()
46 	for (width = num_slices / num_engines; width; width--) {  in __xe_gt_apply_ccs_mode()
51 			if (hwe->class != XE_ENGINE_CLASS_COMPUTE)  in __xe_gt_apply_ccs_mode()
54 			if (hwe->logical_instance >= num_engines)  in __xe_gt_apply_ccs_mode()
57 			config |= BIT(hwe->instance) << XE_HW_ENGINE_CCS0;  in __xe_gt_apply_ccs_mode()
64 			mode |= CCS_MODE_CSLICE(cslice, hwe->instance);  in __xe_gt_apply_ccs_mode()
77 	if (!gt->ccs_mode)  in xe_gt_apply_ccs_mode()
80 	__xe_gt_apply_ccs_mode(gt, gt->ccs_mode);  in xe_gt_apply_ccs_mode()
87 	struct xe_gt *gt = kobj_to_gt(&kdev->kobj);  in num_cslices_show()
98 	struct xe_gt *gt = kobj_to_gt(&kdev->kobj);  in ccs_mode_show()
100 	return sysfs_emit(buf, "%u\n", gt->ccs_mode);  in ccs_mode_show()
107 	struct xe_gt *gt = kobj_to_gt(&kdev->kobj);  in ccs_mode_store()
122 		xe_gt_dbg(gt, "Invalid compute config, %d engines %d slices\n",  in ccs_mode_store()
124 		return -EINVAL;  in ccs_mode_store()
128 	spin_lock(&xe->clients.lock);  in ccs_mode_store()
129 	if (xe->clients.count) {  in ccs_mode_store()
130 		spin_unlock(&xe->clients.lock);  in ccs_mode_store()
131 		return -EBUSY;  in ccs_mode_store()
134 	if (gt->ccs_mode != num_engines) {  in ccs_mode_store()
135 		xe_gt_info(gt, "Setting compute mode to %d\n", num_engines);  in ccs_mode_store()
136 		gt->ccs_mode = num_engines;  in ccs_mode_store()
140 	spin_unlock(&xe->clients.lock);  in ccs_mode_store()
157 	sysfs_remove_files(gt->sysfs, gt_ccs_mode_attrs);  in xe_gt_ccs_mode_sysfs_fini()
161  * xe_gt_ccs_mode_sysfs_init - Initialize CCS mode sysfs interfaces
164  * Through a per-gt 'ccs_mode' sysfs interface, the user can enable a fixed
165  * number of compute hardware engines to which the available compute slices
168  * The number of available compute slices is exposed to user through a per-gt
179 	err = sysfs_create_files(gt->sysfs, gt_ccs_mode_attrs);  in xe_gt_ccs_mode_sysfs_init()
181 		drm_warn(&xe->drm, "Sysfs creation for ccs_mode failed err: %d\n", err);  in xe_gt_ccs_mode_sysfs_init()
185 	err = drmm_add_action_or_reset(&xe->drm, xe_gt_ccs_mode_sysfs_fini, gt);  in xe_gt_ccs_mode_sysfs_init()
187 		sysfs_remove_files(gt->sysfs, gt_ccs_mode_attrs);  in xe_gt_ccs_mode_sysfs_init()
188 		drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",  in xe_gt_ccs_mode_sysfs_init()