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Basic support for using channel-attached 3270 'green-screen'

Browse source 
devices via tn3270. Actual handling of the data stream is
 delegated to x3270; more info at http://wiki.qemu.org/Features/3270
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Merge remote-tracking branch 'cohuck/tags/s390x-3270-20170504' into staging

Basic support for using channel-attached 3270 'green-screen'
devices via tn3270. Actual handling of the data stream is
delegated to x3270; more info at http://wiki.qemu.org/Features/3270

# gpg: Signature made Thu 04 May 2017 11:36:51 AM BST
# gpg:                using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>"
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* cohuck/tags/s390x-3270-20170504:
  s390x/3270: Mark non-migratable and enable the device
  s390x/3270: Detect for continued presence of a 3270 client
  s390x/3270: Add the TCP socket events handler for 3270
  s390x/3270: 3270 data stream handling
  s390x/3270: Add emulated terminal3270 device
  s390x/3270: Add abstract emulated ccw-attached 3270 device
  s390x/css: Add an algorithm to find a free chpid
  chardev: Basic support for TN3270

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2017-05-05 16:56:23 +01:00
commit f03f9f0c10
12 changed files with 625 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

53
include/hw/s390x/3270-ccw.h Normal file
View file

@ -0,0 +1,53 @@
/*
* Emulated ccw-attached 3270 definitions
*
* Copyright 2017 IBM Corp.
* Author(s): Yang Chen <bjcyang@linux.vnet.ibm.com>
* Jing Liu <liujbjl@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef HW_S390X_3270_CCW_H
#define HW_S390X_3270_CCW_H
#include "hw/sysbus.h"
#include "hw/s390x/css.h"
#include "hw/s390x/ccw-device.h"
#define EMULATED_CCW_3270_CU_TYPE 0x3270
#define EMULATED_CCW_3270_CHPID_TYPE 0x1a
#define TYPE_EMULATED_CCW_3270 "emulated-ccw-3270"
/* Local Channel Commands */
#define TC_WRITE 0x01 /* Write */
#define TC_RDBUF 0x02 /* Read buffer */
#define TC_EWRITE 0x05 /* Erase write */
#define TC_READMOD 0x06 /* Read modified */
#define TC_EWRITEA 0x0d /* Erase write alternate */
#define TC_WRITESF 0x11 /* Write structured field */
#define EMULATED_CCW_3270(obj) \
OBJECT_CHECK(EmulatedCcw3270Device, (obj), TYPE_EMULATED_CCW_3270)
#define EMULATED_CCW_3270_CLASS(klass) \
OBJECT_CLASS_CHECK(EmulatedCcw3270Class, (klass), TYPE_EMULATED_CCW_3270)
#define EMULATED_CCW_3270_GET_CLASS(obj) \
OBJECT_GET_CLASS(EmulatedCcw3270Class, (obj), TYPE_EMULATED_CCW_3270)
typedef struct EmulatedCcw3270Device {
CcwDevice parent_obj;
} EmulatedCcw3270Device;
typedef struct EmulatedCcw3270Class {
CCWDeviceClass parent_class;
void (*init)(EmulatedCcw3270Device *, Error **);
int (*read_payload_3270)(EmulatedCcw3270Device *, uint32_t, uint16_t);
int (*write_payload_3270)(EmulatedCcw3270Device *, uint8_t, uint32_t,
uint16_t);
} EmulatedCcw3270Class;
#endif

2
include/hw/s390x/css.h
View file

@ -28,6 +28,7 @@
#define MAX_CIWS 62
#define VIRTUAL_CSSID 0xfe
#define VIRTIO_CCW_CHPID 0 /* used by convention */
typedef struct CIW {
uint8_t type;
@ -115,6 +116,7 @@ bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno);
void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid,
uint16_t devno, SubchDev *sch);
void css_sch_build_virtual_schib(SubchDev *sch, uint8_t chpid, uint8_t type);
unsigned int css_find_free_chpid(uint8_t cssid);
uint16_t css_build_subchannel_id(SubchDev *sch);
void css_reset(void);
void css_reset_sch(SubchDev *sch);