From b4543b3980ad37e73bbe779bac68391a5c3d12c1 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 22 Feb 2012 14:12:07 +0100 Subject: [PATCH 051/109] scsi-disk: report media changed via GET EVENT STATUS NOTIFICATION RH-Author: Paolo Bonzini Message-id: <1329919979-20948-51-git-send-email-pbonzini@redhat.com> Patchwork-id: 37531 O-Subject: [RHEL 6.3 qemu-kvm PATCH v2 050/102] scsi-disk: report media changed via GET EVENT STATUS NOTIFICATION Bugzilla: 782029 RH-Acked-by: Laszlo Ersek RH-Acked-by: Orit Wasserman RH-Acked-by: Gerd Hoffmann This adds support for media change notification via the GET EVENT STATUS NOTIFICATION command, used by Linux versions 2.6.38 and newer. Upstream used st*_be_p functions, which are not available to common code in RHEL6 qemu. Signed-off-by: Paolo Bonzini Signed-off-by: Kevin Wolf (cherry picked from 3c2f7c12c2e19707cb4e28dd57180f7be3dd4950) --- hw/scsi-disk.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 files changed, 54 insertions(+), 4 deletions(-) Signed-off-by: Michal Novotny --- hw/scsi-disk.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 files changed, 54 insertions(+), 4 deletions(-) diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index 20cdb41..fcb49f3 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -71,6 +71,7 @@ struct SCSIDiskState uint32_t removable; uint64_t max_lba; bool media_changed; + bool media_event; QEMUBH *bh; char *version; char *serial; @@ -729,11 +730,59 @@ fail: return -1; } -static int scsi_get_event_status_notification(SCSIDiskState *s, - SCSIDiskReq *r, uint8_t *outbuf) +static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf) { - scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); - return -1; + uint8_t event_code, media_status; + + media_status = 0; + if (s->tray_open) { + media_status = MS_TRAY_OPEN; + } else if (bdrv_is_inserted(s->bs)) { + media_status = MS_MEDIA_PRESENT; + } + + /* Event notification descriptor */ + event_code = MEC_NO_CHANGE; + if (media_status != MS_TRAY_OPEN && s->media_event) { + event_code = MEC_NEW_MEDIA; + s->media_event = false; + } + + outbuf[0] = event_code; + outbuf[1] = media_status; + + /* These fields are reserved, just clear them. */ + outbuf[2] = 0; + outbuf[3] = 0; + return 4; +} + +static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r, + uint8_t *outbuf) +{ + int size; + uint8_t *buf = r->req.cmd.buf; + uint8_t notification_class_request = buf[4]; + if (s->qdev.type != TYPE_ROM) { + return -1; + } + if ((buf[1] & 1) == 0) { + /* asynchronous */ + return -1; + } + + size = 4; + outbuf[0] = outbuf[1] = 0; + outbuf[3] = 1 << GESN_MEDIA; /* supported events */ + if (notification_class_request & (1 << GESN_MEDIA)) { + outbuf[2] = GESN_MEDIA; + size += scsi_event_status_media(s, &outbuf[size]); + } else { + outbuf[2] = 0x80; + } + outbuf[0] = (size - 4) >> 8; + outbuf[1] = size - 4; + return size; } static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf) @@ -1487,6 +1536,7 @@ static void scsi_cd_change_media_cb(void *opaque, bool load) s->media_changed = load; s->tray_open = !load; s->qdev.unit_attention = SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM); + s->media_event = true; } static bool scsi_cd_is_tray_open(void *opaque) -- 1.7.7.6