1 // SPDX-License-Identifier: MIT
45  * xe_gsc_create_host_session_id - Creates a random 64 bit host_session id with
46  * bits 56-63 masked.
48  * Returns: random host_session_id which can be used to send messages to gsc cs
60  * xe_gsc_emit_header - write the MTL GSC header in memory
90  * xe_gsc_poison_header - poison the MTL GSC header in memory
101  * xe_gsc_check_and_update_pending - check the pending bit and update the input
106  * @out: the iosys map containing the output buffer
113 				     struct iosys_map *out, u32 offset_out)  in xe_gsc_check_and_update_pending()  argument
115 	if (mtl_gsc_header_rd(xe, out, offset_out, flags) & GSC_OUTFLAG_MSG_PENDING) {  in xe_gsc_check_and_update_pending()
116 		u64 handle = mtl_gsc_header_rd(xe, out, offset_out, gsc_message_handle);  in xe_gsc_check_and_update_pending()
127  * xe_gsc_read_out_header - reads and validates the output header and returns
135  * Returns: -errno value on failure, 0 otherwise
145 	u32 payload_size = size - GSC_HDR_SIZE;  in xe_gsc_read_out_header()
148 		return -EPROTO;  in xe_gsc_read_out_header()
151 		drm_err(&xe->drm, "GSC header readout indicates error: %d\n",  in xe_gsc_read_out_header()
153 		return -EINVAL;  in xe_gsc_read_out_header()
157 		return -ENODATA;  in xe_gsc_read_out_header()
166  * xe_gsc_pkt_submit_kernel - submit a kernel heci pkt to the GSC
183 		return -ENODATA;  in xe_gsc_pkt_submit_kernel()
186 		return -ENOMEM;  in xe_gsc_pkt_submit_kernel()
192 	bb->cs[bb->len++] = GSC_HECI_CMD_PKT;  in xe_gsc_pkt_submit_kernel()
193 	bb->cs[bb->len++] = lower_32_bits(addr_in);  in xe_gsc_pkt_submit_kernel()
194 	bb->cs[bb->len++] = upper_32_bits(addr_in);  in xe_gsc_pkt_submit_kernel()
195 	bb->cs[bb->len++] = size_in;  in xe_gsc_pkt_submit_kernel()
196 	bb->cs[bb->len++] = lower_32_bits(addr_out);  in xe_gsc_pkt_submit_kernel()
197 	bb->cs[bb->len++] = upper_32_bits(addr_out);  in xe_gsc_pkt_submit_kernel()
198 	bb->cs[bb->len++] = size_out;  in xe_gsc_pkt_submit_kernel()
199 	bb->cs[bb->len++] = 0;  in xe_gsc_pkt_submit_kernel()
201 	job = xe_bb_create_job(gsc->q, bb);  in xe_gsc_pkt_submit_kernel()
208 	fence = dma_fence_get(&job->drm.s_fence->finished);  in xe_gsc_pkt_submit_kernel()
217 		return -ETIME;  in xe_gsc_pkt_submit_kernel()