Commit fca894ed authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

[S390] chsc: process channel-path-availability information 



Update affected channel path descriptors when receiving channel path
availability information.

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent b2fa47e6

drivers/s390/cio/chsc.c

+34 −1
Original line number Diff line number Diff line
@@ -326,6 +326,36 @@ static void chsc_process_sei_res_acc(struct chsc_sei_area *sei_area) 
	s390_process_res_acc(&link);

}



static void chsc_process_sei_chp_avail(struct chsc_sei_area *sei_area)

{

	struct channel_path *chp;

	struct chp_id chpid;

	u8 *data;

	int num;



	CIO_CRW_EVENT(4, "chsc: channel path availability information\n");

	if (sei_area->rs != 0)

		return;

	data = sei_area->ccdf;

	chp_id_init(&chpid);

	for (num = 0; num <= __MAX_CHPID; num++) {

		if (!chp_test_bit(data, num))

			continue;

		chpid.id = num;



		CIO_CRW_EVENT(4, "Update information for channel path "

			      "%x.%02x\n", chpid.cssid, chpid.id);

		chp = chpid_to_chp(chpid);

		if (!chp) {

			chp_new(chpid);

			continue;

		}

		mutex_lock(&chp->lock);

		chsc_determine_base_channel_path_desc(chpid, &chp->desc);

		mutex_unlock(&chp->lock);

	}

}



struct chp_config_data {

	u8 map[32];

	u8 op;
@@ -376,9 +406,12 @@ static void chsc_process_sei(struct chsc_sei_area *sei_area) 
	case 1: /* link incident*/

		chsc_process_sei_link_incident(sei_area);

		break;

	case 2: /* i/o resource accessibiliy */

	case 2: /* i/o resource accessibility */

		chsc_process_sei_res_acc(sei_area);

		break;

	case 7: /* channel-path-availability information */

		chsc_process_sei_chp_avail(sei_area);

		break;

	case 8: /* channel-path-configuration notification */

		chsc_process_sei_chp_config(sei_area);

		break;