11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * CCW device SENSE ID I/O handling. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Copyright IBM Corp. 2002,2009 539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> 639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Martin Schwidefsky <schwidefsky@de.ibm.com> 739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Peter Oberparleiter <peter.oberparleiter@de.ibm.com> 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10045236ab190636c989ae8198eca37cfbafc1430bAhmed S. Darwish#include <linux/kernel.h> 1139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter#include <linux/string.h> 1239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter#include <linux/types.h> 1339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter#include <linux/errno.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/ccwdev.h> 1539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter#include <asm/setup.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/cio.h> 170a87c5cfc0bb0c1bdcc1cc9fd82e4a1711fac512Michael Holzheu#include <asm/diag.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "cio.h" 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "cio_debug.h" 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "device.h" 22cd6b4f27b9bb2a6a5ec82b96b87c85421257be6cCornelia Huck#include "io_sch.h" 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24de1b04388f63cbddf91d9f6c50c29be7232881caPeter Oberparleiter#define SENSE_ID_RETRIES 256 2539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter#define SENSE_ID_TIMEOUT (10 * HZ) 2639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter#define SENSE_ID_MIN_LEN 4 2739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter#define SENSE_ID_BASIC_LEN 7 2839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter 296f52ac29712f3eec192599249b12612360948646Peter Oberparleiter/** 3039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * diag210_to_senseid - convert diag 0x210 data to sense id information 3139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * @senseid: sense id 3239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * @diag: diag 0x210 data 336f52ac29712f3eec192599249b12612360948646Peter Oberparleiter * 3439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Return 0 on success, non-zero otherwise. 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiterstatic int diag210_to_senseid(struct senseid *senseid, struct diag210 *diag) 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static struct { 396f52ac29712f3eec192599249b12612360948646Peter Oberparleiter int class, type, cu_type; 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } vm_devices[] = { 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x08, 0x01, 0x3480 }, 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x08, 0x02, 0x3430 }, 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x08, 0x10, 0x3420 }, 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x08, 0x42, 0x3424 }, 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x08, 0x44, 0x9348 }, 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x08, 0x81, 0x3490 }, 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x08, 0x82, 0x3422 }, 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x41, 0x1403 }, 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x42, 0x3211 }, 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x43, 0x3203 }, 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x45, 0x3800 }, 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x47, 0x3262 }, 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x48, 0x3820 }, 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x49, 0x3800 }, 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x4a, 0x4245 }, 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x4b, 0x4248 }, 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x4d, 0x3800 }, 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x4e, 0x3820 }, 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x4f, 0x3820 }, 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x82, 0x2540 }, 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x10, 0x84, 0x3525 }, 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x20, 0x81, 0x2501 }, 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x20, 0x82, 0x2540 }, 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x20, 0x84, 0x3505 }, 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x40, 0x01, 0x3278 }, 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x40, 0x04, 0x3277 }, 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x40, 0x80, 0x2250 }, 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x40, 0xc0, 0x5080 }, 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x80, 0x00, 0x3215 }, 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; 716f52ac29712f3eec192599249b12612360948646Peter Oberparleiter int i; 726f52ac29712f3eec192599249b12612360948646Peter Oberparleiter 7339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Special case for osa devices. */ 7439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (diag->vrdcvcla == 0x02 && diag->vrdcvtyp == 0x20) { 7539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter senseid->cu_type = 0x3088; 7639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter senseid->cu_model = 0x60; 7739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter senseid->reserved = 0xff; 7839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter return 0; 7939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter } 8039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter for (i = 0; i < ARRAY_SIZE(vm_devices); i++) { 8139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (diag->vrdcvcla == vm_devices[i].class && 8239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter diag->vrdcvtyp == vm_devices[i].type) { 8339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter senseid->cu_type = vm_devices[i].cu_type; 8439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter senseid->reserved = 0xff; 8539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter return 0; 8639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter } 8739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter } 886f52ac29712f3eec192599249b12612360948646Peter Oberparleiter 8939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter return -ENODEV; 906f52ac29712f3eec192599249b12612360948646Peter Oberparleiter} 916f52ac29712f3eec192599249b12612360948646Peter Oberparleiter 926f52ac29712f3eec192599249b12612360948646Peter Oberparleiter/** 9339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * diag_get_dev_info - retrieve device information via diag 0x210 9439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * @cdev: ccw device 956f52ac29712f3eec192599249b12612360948646Peter Oberparleiter * 966f52ac29712f3eec192599249b12612360948646Peter Oberparleiter * Returns zero on success, non-zero otherwise. 976f52ac29712f3eec192599249b12612360948646Peter Oberparleiter */ 9839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiterstatic int diag210_get_dev_info(struct ccw_device *cdev) 996f52ac29712f3eec192599249b12612360948646Peter Oberparleiter{ 10039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct ccw_dev_id *dev_id = &cdev->private->dev_id; 10139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct senseid *senseid = &cdev->private->senseid; 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct diag210 diag_data; 10339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter int rc; 10439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter 10539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (dev_id->ssid != 0) 10639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter return -ENODEV; 10739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter memset(&diag_data, 0, sizeof(diag_data)); 10839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter diag_data.vrdcdvno = dev_id->devno; 10939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter diag_data.vrdclen = sizeof(diag_data); 11039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter rc = diag210(&diag_data); 11139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_TRACE_EVENT(4, "diag210"); 11239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_HEX_EVENT(4, &rc, sizeof(rc)); 11339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_HEX_EVENT(4, &diag_data, sizeof(diag_data)); 11439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (rc != 0 && rc != 2) 11539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter goto err_failed; 11639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (diag210_to_senseid(senseid, &diag_data)) 11739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter goto err_unknown; 11839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter return 0; 11939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter 12039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleitererr_unknown: 12139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_MSG_EVENT(0, "snsid: device 0.%x.%04x: unknown diag210 data\n", 12239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter dev_id->ssid, dev_id->devno); 12339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter return -ENODEV; 12439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleitererr_failed: 12539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_MSG_EVENT(0, "snsid: device 0.%x.%04x: diag210 failed (rc=%d)\n", 12639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter dev_id->ssid, dev_id->devno, rc); 1276f52ac29712f3eec192599249b12612360948646Peter Oberparleiter return -ENODEV; 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 13139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Initialize SENSE ID data. 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiterstatic void snsid_init(struct ccw_device *cdev) 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter cdev->private->flags.esid = 0; 13639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter memset(&cdev->private->senseid, 0, sizeof(cdev->private->senseid)); 13739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter cdev->private->senseid.cu_type = 0xffff; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Check for complete SENSE ID data. 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiterstatic int snsid_check(struct ccw_device *cdev, void *data) 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct cmd_scsw *scsw = &cdev->private->irb.scsw.cmd; 14639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter int len = sizeof(struct senseid) - scsw->count; 14739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter 14839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Check for incomplete SENSE ID data. */ 14939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (len < SENSE_ID_MIN_LEN) 15039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter goto out_restart; 15139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (cdev->private->senseid.cu_type == 0xffff) 15239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter goto out_restart; 15339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Check for incompatible SENSE ID data. */ 15439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (cdev->private->senseid.reserved != 0xff) 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EOPNOTSUPP; 15639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Check for extended-identification information. */ 15739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (len > SENSE_ID_BASIC_LEN) 15839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter cdev->private->flags.esid = 1; 15939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter return 0; 160cd6b4f27b9bb2a6a5ec82b96b87c85421257be6cCornelia Huck 16139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiterout_restart: 16239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter snsid_init(cdev); 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EAGAIN; 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 16739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Process SENSE ID request result. 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiterstatic void snsid_callback(struct ccw_device *cdev, void *data, int rc) 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct ccw_dev_id *id = &cdev->private->dev_id; 17239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct senseid *senseid = &cdev->private->senseid; 17339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter int vm = 0; 17439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter 17539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (rc && MACHINE_IS_VM) { 17639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Try diag 0x210 fallback on z/VM. */ 17739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter snsid_init(cdev); 17839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter if (diag210_get_dev_info(cdev) == 0) { 17939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter rc = 0; 18039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter vm = 1; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_MSG_EVENT(2, "snsid: device 0.%x.%04x: rc=%d %04x/%02x " 18439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter "%04x/%02x%s\n", id->ssid, id->devno, rc, 18539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter senseid->cu_type, senseid->cu_model, senseid->dev_type, 18639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter senseid->dev_model, vm ? " (diag210)" : ""); 18739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter ccw_device_sense_id_done(cdev, rc); 18839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter} 1896f52ac29712f3eec192599249b12612360948646Peter Oberparleiter 19039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter/** 19139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * ccw_device_sense_id_start - perform SENSE ID 19239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * @cdev: ccw device 19339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * 19439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * Execute a SENSE ID channel program on @cdev to update its sense id 19539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * information. When finished, call ccw_device_sense_id_done with a 19639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter * return code specifying the result. 19739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter */ 19839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleitervoid ccw_device_sense_id_start(struct ccw_device *cdev) 19939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter{ 20039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct subchannel *sch = to_subchannel(cdev->dev.parent); 20139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct ccw_request *req = &cdev->private->req; 20239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter struct ccw1 *cp = cdev->private->iccws; 20339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter 20439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_TRACE_EVENT(4, "snsid"); 20539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id)); 20639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Data setup. */ 20739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter snsid_init(cdev); 20839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Channel program setup. */ 20939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter cp->cmd_code = CCW_CMD_SENSE_ID; 21039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter cp->cda = (u32) (addr_t) &cdev->private->senseid; 21139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter cp->count = sizeof(struct senseid); 21239f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter cp->flags = CCW_FLAG_SLI; 21339f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter /* Request setup. */ 21439f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter memset(req, 0, sizeof(*req)); 21539f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter req->cp = cp; 21639f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter req->timeout = SENSE_ID_TIMEOUT; 21739f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter req->maxretries = SENSE_ID_RETRIES; 21839f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter req->lpm = sch->schib.pmcw.pam & sch->opm; 21939f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter req->check = snsid_check; 22039f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter req->callback = snsid_callback; 22139f5360b3d68a8e96d280481d9c442e7c005c317Peter Oberparleiter ccw_request_start(cdev); 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 223