various bugfixes for 3.1: fmops, ps2, cirrus, hda, usb-host, qapi

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Merge remote-tracking branch 'remotes/kraxel/tags/fixes-31-20181127-pull-request' into staging

various bugfixes for 3.1: fmops, ps2, cirrus, hda, usb-host, qapi

# gpg: Signature made Tue 27 Nov 2018 06:49:13 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/fixes-31-20181127-pull-request:
  qapi: add query-display-options command
  usb-host: set ifs.detached as true if kernel driver is not active
  audio/hda: fix guest triggerable assert
  cirrus_vga/migration: update the bank offset before use
  ps2kbd: default to scan enabled after reset
  fmops: fix off-by-one in AR_TABLE and DR_TABLE array size

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/audio/fmopl.h

@@ -72,8 +72,8 @@ typedef struct fm_opl_f {
 	/* Rhythm sention */
 	uint8_t rhythm;		/* Rhythm mode , key flag */
 	/* time tables */
-	int32_t AR_TABLE[75];	/* atttack rate tables */
-	int32_t DR_TABLE[75];	/* decay rate tables   */
+	int32_t AR_TABLE[76];	/* attack rate tables  */
+	int32_t DR_TABLE[76];	/* decay rate tables   */
 	uint32_t FN_TABLE[1024];  /* fnumber -> increment counter */
 	/* LFO */
 	int32_t *ams_table;

hw/audio/intel-hda.c

@@ -23,6 +23,7 @@
 #include "hw/pci/msi.h"
 #include "qemu/timer.h"
 #include "qemu/bitops.h"
+#include "qemu/log.h"
 #include "hw/audio/soundhw.h"
 #include "intel-hda.h"
 #include "intel-hda-defs.h"
@@ -929,6 +930,11 @@ static void intel_hda_reg_write(IntelHDAState *d, const IntelHDAReg *reg, uint32
     if (!reg) {
         return;
     }
+    if (!reg->wmask) {
+        qemu_log_mask(LOG_GUEST_ERROR, "intel-hda: write to r/o reg %s\n",
+                      reg->name);
+        return;
+    }
 
     if (d->debug) {
         time_t now = time(NULL);

hw/display/cirrus_vga.c

@@ -2746,11 +2746,12 @@ static int cirrus_post_load(void *opaque, int version_id)
     s->vga.gr[0x00] = s->cirrus_shadow_gr0 & 0x0f;
     s->vga.gr[0x01] = s->cirrus_shadow_gr1 & 0x0f;
 
+    cirrus_update_bank_ptr(s, 0);
+    cirrus_update_bank_ptr(s, 1);
     cirrus_update_memory_access(s);
     /* force refresh */
     s->vga.graphic_mode = -1;
-    cirrus_update_bank_ptr(s, 0);
-    cirrus_update_bank_ptr(s, 1);
+
     return 0;
 }
 

hw/input/ps2.c

@@ -942,7 +942,7 @@ static void ps2_kbd_reset(void *opaque)
 
     trace_ps2_kbd_reset(opaque);
     ps2_common_reset(&s->common);
-    s->scan_enabled = 0;
+    s->scan_enabled = 1;
     s->translate = 0;
     s->scancode_set = 2;
     s->modifiers = 0;

hw/usb/host-libusb.c

@@ -1120,6 +1120,9 @@ static void usb_host_detach_kernel(USBHostDevice *s)
         rc = libusb_kernel_driver_active(s->dh, i);
         usb_host_libusb_error("libusb_kernel_driver_active", rc);
         if (rc != 1) {
+            if (rc == 0) {
+                s->ifs[i].detached = true;
+            }
             continue;
         }
         trace_usb_host_detach_kernel(s->bus_num, s->addr, i);

qapi/ui.json

@@ -1102,3 +1102,16 @@
   'discriminator' : 'type',
   'data'    : { 'gtk'            : 'DisplayGTK',
                 'egl-headless'   : 'DisplayEGLHeadless'} }
+
+##
+# @query-display-options:
+#
+# Returns information about display configuration
+#
+# Returns: @DisplayOptions
+#
+# Since: 3.1
+#
+##
+{ 'command': 'query-display-options',
+  'returns': 'DisplayOptions' }

vl.c

@@ -128,6 +128,7 @@ int main(int argc, char **argv)
 #include "qapi/qapi-commands-block-core.h"
 #include "qapi/qapi-commands-misc.h"
 #include "qapi/qapi-commands-run-state.h"
+#include "qapi/qapi-commands-ui.h"
 #include "qapi/qmp/qerror.h"
 #include "sysemu/iothread.h"
 
@@ -2055,6 +2056,11 @@ static void parse_display_qapi(const char *optarg)
     visit_free(v);
 }
 
+DisplayOptions *qmp_query_display_options(Error **errp)
+{
+    return QAPI_CLONE(DisplayOptions, &dpy);
+}
+
 static void parse_display(const char *p)
 {
     const char *opts;