38  * 1 - Xe submits a request to GSC asking for the message to CSME
40  * 3 - Xe sends the reply from GSC as-is to CSME via the mei proxy component
42  * 5 - Xe submits a request to GSC with the reply from CSME
99 	__gsc_proxy_irq_rmw(gsc, 0, HECI_H_CSR_IS);  in gsc_proxy_irq_clear()
104 	u32 set = enabled ? HECI_H_CSR_IE : 0;  in gsc_proxy_irq_toggle()
105 	u32 clr = enabled ? 0 : HECI_H_CSR_IE;  in gsc_proxy_irq_toggle()
117 	if (ret < 0) {  in proxy_send_to_csme()
123 	if (ret < 0) {  in proxy_send_to_csme()
151 	return 0;  in proxy_send_to_gsc()
160 	int ret = 0;  in validate_proxy_header()
173 	if (dest == GSC_PROXY_ADDRESSING_KMD && header->status != 0) {  in validate_proxy_header()
180 		if (length > 0)  in validate_proxy_header()
193 			  "GSC proxy error: s=0x%x[0x%x], d=0x%x[0x%x], t=%u, l=0x%x, st=0x%x\n",  in validate_proxy_header()
206 static u32 emit_proxy_header(struct xe_device *xe, struct iosys_map *map, u32 offset)  in emit_proxy_header()  argument
208 	xe_map_memset(xe, map, offset, 0, PROXY_HDR_SIZE);  in emit_proxy_header()
210 	proxy_header_wr(xe, map, offset, hdr,  in emit_proxy_header()
212 			FIELD_PREP(GSC_PROXY_PAYLOAD_LENGTH, 0));  in emit_proxy_header()
214 	proxy_header_wr(xe, map, offset, source, GSC_PROXY_ADDRESSING_KMD);  in emit_proxy_header()
215 	proxy_header_wr(xe, map, offset, destination, GSC_PROXY_ADDRESSING_GSC);  in emit_proxy_header()
216 	proxy_header_wr(xe, map, offset, status, 0);  in emit_proxy_header()
224 	struct xe_device *xe = gt_to_xe(gt);  in proxy_query()  local
232 	wr_offset = xe_gsc_emit_header(xe, &gsc->proxy.to_gsc, 0,  in proxy_query()
233 				       HECI_MEADDRESS_PROXY, 0, PROXY_HDR_SIZE);  in proxy_query()
234 	wr_offset = emit_proxy_header(xe, &gsc->proxy.to_gsc, wr_offset);  in proxy_query()
243 		xe_gsc_poison_header(xe, &gsc->proxy.from_gsc, 0);  in proxy_query()
251 		ret = xe_gsc_read_out_header(xe, &gsc->proxy.from_gsc, 0,  in proxy_query()
260 		xe_map_memcpy_from(xe, to_csme_hdr, &gsc->proxy.from_gsc,  in proxy_query()
285 		xe_map_memcpy_from(xe, to_csme_payload, &gsc->proxy.from_gsc,  in proxy_query()
290 		if (ret < 0)  in proxy_query()
296 			xe_gt_err(gt, "CSME to GSC proxy msg too small: 0x%x\n", size);  in proxy_query()
312 		wr_offset = xe_gsc_emit_header(xe, &gsc->proxy.to_gsc, 0,  in proxy_query()
313 					       HECI_MEADDRESS_PROXY, 0, size);  in proxy_query()
316 		xe_map_memcpy_to(xe, &gsc->proxy.to_gsc, wr_offset, gsc->proxy.from_csme, size);  in proxy_query()
322 	return ret < 0 ? ret : 0;  in proxy_query()
335 	for (slept = 0; slept < GSC_PROXY_INIT_TIMEOUT_MS; slept += 100) {  in xe_gsc_proxy_request_handler()
380 	struct xe_device *xe = kdev_to_xe_device(xe_kdev);  in xe_gsc_proxy_component_bind()  local
381 	struct xe_gt *gt = xe->tiles[0].media_gt;  in xe_gsc_proxy_component_bind()
389 	return 0;  in xe_gsc_proxy_component_bind()
395 	struct xe_device *xe = kdev_to_xe_device(xe_kdev);  in xe_gsc_proxy_component_unbind()  local
396 	struct xe_gt *gt = xe->tiles[0].media_gt;  in xe_gsc_proxy_component_unbind()
415 	struct xe_device *xe = gt_to_xe(gt);  in proxy_channel_alloc()  local
419 	csme = drmm_kzalloc(&xe->drm, GSC_PROXY_CHANNEL_SIZE, GFP_KERNEL);  in proxy_channel_alloc()
423 	bo = xe_managed_bo_create_pin_map(xe, tile, GSC_PROXY_CHANNEL_SIZE,  in proxy_channel_alloc()
430 	gsc->proxy.to_gsc = IOSYS_MAP_INIT_OFFSET(&bo->vmap, 0);  in proxy_channel_alloc()
435 	return 0;  in proxy_channel_alloc()
441 	struct xe_device *xe = gt_to_xe(gt);  in xe_gsc_proxy_stop()  local
444 	scoped_guard(xe_pm_runtime, xe) {  in xe_gsc_proxy_stop()
461 	struct xe_device *xe = gt_to_xe(gt);  in xe_gsc_proxy_remove()  local
468 	 * Xe module load/unload. Using devm managed action to register  in xe_gsc_proxy_remove()
469 	 * xe_gsc_proxy_stop could cause issues if Xe module unload has  in xe_gsc_proxy_remove()
479 	component_del(xe->drm.dev, &xe_gsc_proxy_component_ops);  in xe_gsc_proxy_remove()
487  * Return: 0 if the initialization was successful, a negative errno otherwise.
494 	struct xe_device *xe = tile_to_xe(tile);  in xe_gsc_proxy_init()  local
513 	err = component_add_typed(xe->drm.dev, &xe_gsc_proxy_component_ops,  in xe_gsc_proxy_init()
515 	if (err < 0) {  in xe_gsc_proxy_init()
522 	return devm_add_action_or_reset(xe->drm.dev, xe_gsc_proxy_remove, gsc);  in xe_gsc_proxy_init()
529  * Return: 0 if the proxy are now enabled, a negative errno otherwise.
554 	return 0;  in xe_gsc_proxy_start()