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authorHalil Pasic <pasic@linux.vnet.ibm.com>2017-09-20 19:23:13 +0200
committerCornelia Huck <cohuck@redhat.com>2017-10-06 10:53:02 +0200
commit1baa2eb01e349889a25f7a038e6ae7c335f6246b (patch)
treefa87a1a76fd23ff9d87aaf17e90d1c71551ec7ed /hw
parentc1843e20924c9f79c8233ea34db31f3ae2a74677 (diff)
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s390x/3270: IDA support for 3270 via CcwDataStream
Let us convert the 3270 code so it uses the recently introduced CcwDataStream abstraction instead of blindly assuming direct data access. This patch does not change behavior beyond introducing IDA support: for direct data access CCWs everything stays as-is. (If there are bugs, they are also preserved). Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170920172314.102710-2-pasic@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/char/terminal3270.c18
-rw-r--r--hw/s390x/3270-ccw.c4
2 files changed, 13 insertions, 9 deletions
diff --git a/hw/char/terminal3270.c b/hw/char/terminal3270.c
index 28f5991..c976a63 100644
--- a/hw/char/terminal3270.c
+++ b/hw/char/terminal3270.c
@@ -182,14 +182,18 @@ static void terminal_init(EmulatedCcw3270Device *dev, Error **errp)
terminal_read, chr_event, NULL, t, NULL, true);
}
-static int read_payload_3270(EmulatedCcw3270Device *dev, uint32_t cda,
- uint16_t count)
+static inline CcwDataStream *get_cds(Terminal3270 *t)
+{
+ return &(CCW_DEVICE(&t->cdev)->sch->cds);
+}
+
+static int read_payload_3270(EmulatedCcw3270Device *dev)
{
Terminal3270 *t = TERMINAL_3270(dev);
int len;
- len = MIN(count, t->in_len);
- cpu_physical_memory_write(cda, t->inv, len);
+ len = MIN(ccw_dstream_avail(get_cds(t)), t->in_len);
+ ccw_dstream_write_buf(get_cds(t), t->inv, len);
t->in_len -= len;
return len;
@@ -222,11 +226,11 @@ static int insert_IAC_escape_char(uint8_t *outv, int out_len)
* Write 3270 outbound to socket.
* Return the count of 3270 data field if succeeded, zero if failed.
*/
-static int write_payload_3270(EmulatedCcw3270Device *dev, uint8_t cmd,
- uint32_t cda, uint16_t count)
+static int write_payload_3270(EmulatedCcw3270Device *dev, uint8_t cmd)
{
Terminal3270 *t = TERMINAL_3270(dev);
int retval = 0;
+ int count = ccw_dstream_avail(get_cds(t));
assert(count <= (OUTPUT_BUFFER_SIZE - 3) / 2);
@@ -244,7 +248,7 @@ static int write_payload_3270(EmulatedCcw3270Device *dev, uint8_t cmd,
return count;
}
t->outv[0] = cmd;
- cpu_physical_memory_read(cda, &t->outv[1], count);
+ ccw_dstream_read_buf(get_cds(t), &t->outv[1], count);
t->out_len = count + 1;
t->out_len = insert_IAC_escape_char(t->outv, t->out_len);
diff --git a/hw/s390x/3270-ccw.c b/hw/s390x/3270-ccw.c
index 1554aa2..eaca28e 100644
--- a/hw/s390x/3270-ccw.c
+++ b/hw/s390x/3270-ccw.c
@@ -28,7 +28,7 @@ static int handle_payload_3270_read(EmulatedCcw3270Device *dev, CCW1 *ccw)
return -EFAULT;
}
- len = ck->read_payload_3270(dev, ccw->cda, ccw->count);
+ len = ck->read_payload_3270(dev);
ccw_dev->sch->curr_status.scsw.count = ccw->count - len;
return 0;
@@ -45,7 +45,7 @@ static int handle_payload_3270_write(EmulatedCcw3270Device *dev, CCW1 *ccw)
return -EFAULT;
}
- len = ck->write_payload_3270(dev, ccw->cmd_code, ccw->cda, ccw->count);
+ len = ck->write_payload_3270(dev, ccw->cmd_code);
if (len <= 0) {
return -EIO;