fixes for console, audio, usb, vga.

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Merge remote-tracking branch 'remotes/kraxel/tags/fixes-20201113-pull-request' into staging

fixes for console, audio, usb, vga.

# gpg: Signature made Fri 13 Nov 2020 12:29:44 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/fixes-20201113-pull-request:
  xhci: fix nec-usb-xhci properties
  hw/display/cirrus_vga: Fix hexadecimal format string specifier
  hw/display/cirrus_vga: Remove debugging code commented out
  hw/usb/Kconfig: Fix USB_XHCI_NEC (depends on USB_XHCI_PCI)
  console: avoid passing con=NULL to graphic_hw_update_done()
  audio/jack: fix use after free segfault

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

audio/jackaudio.c

@@ -25,6 +25,7 @@
 #include "qemu/osdep.h"
 #include "qemu/module.h"
 #include "qemu/atomic.h"
+#include "qemu/main-loop.h"
 #include "qemu-common.h"
 #include "audio.h"
 
@@ -63,6 +64,7 @@ typedef struct QJackClient {
     QJackState      state;
     jack_client_t  *client;
     jack_nframes_t  freq;
+    QEMUBH         *shutdown_bh;
 
     struct QJack   *j;
     int             nchannels;
@@ -87,6 +89,7 @@ QJackIn;
 static int qjack_client_init(QJackClient *c);
 static void qjack_client_connect_ports(QJackClient *c);
 static void qjack_client_fini(QJackClient *c);
+static QemuMutex qjack_shutdown_lock;
 
 static void qjack_buffer_create(QJackBuffer *buffer, int channels, int frames)
 {
@@ -306,21 +309,27 @@ static int qjack_xrun(void *arg)
     return 0;
 }
 
+static void qjack_shutdown_bh(void *opaque)
+{
+    QJackClient *c = (QJackClient *)opaque;
+    qjack_client_fini(c);
+}
+
 static void qjack_shutdown(void *arg)
 {
     QJackClient *c = (QJackClient *)arg;
     c->state = QJACK_STATE_SHUTDOWN;
+    qemu_bh_schedule(c->shutdown_bh);
 }
 
 static void qjack_client_recover(QJackClient *c)
 {
-    if (c->state == QJACK_STATE_SHUTDOWN) {
+    if (c->state != QJACK_STATE_DISCONNECTED) {
-        qjack_client_fini(c);
+        return;
     }
 
     /* packets is used simply to throttle this */
-    if (c->state == QJACK_STATE_DISCONNECTED &&
+    if (c->packets % 100 == 0) {
-        c->packets % 100 == 0) {
 
         /* if enabled then attempt to recover */
         if (c->enabled) {
@@ -489,15 +498,16 @@ static int qjack_init_out(HWVoiceOut *hw, struct audsettings *as,
     QJackOut *jo  = (QJackOut *)hw;
     Audiodev *dev = (Audiodev *)drv_opaque;
 
-    qjack_client_fini(&jo->c);
-
     jo->c.out       = true;
     jo->c.enabled   = false;
     jo->c.nchannels = as->nchannels;
     jo->c.opt       = dev->u.jack.out;
 
+    jo->c.shutdown_bh = qemu_bh_new(qjack_shutdown_bh, &jo->c);
+
     int ret = qjack_client_init(&jo->c);
     if (ret != 0) {
+        qemu_bh_delete(jo->c.shutdown_bh);
         return ret;
     }
 
@@ -525,15 +535,16 @@ static int qjack_init_in(HWVoiceIn *hw, struct audsettings *as,
     QJackIn  *ji  = (QJackIn *)hw;
     Audiodev *dev = (Audiodev *)drv_opaque;
 
-    qjack_client_fini(&ji->c);
-
     ji->c.out       = false;
     ji->c.enabled   = false;
     ji->c.nchannels = as->nchannels;
     ji->c.opt       = dev->u.jack.in;
 
+    ji->c.shutdown_bh = qemu_bh_new(qjack_shutdown_bh, &ji->c);
+
     int ret = qjack_client_init(&ji->c);
     if (ret != 0) {
+        qemu_bh_delete(ji->c.shutdown_bh);
         return ret;
     }
 
@@ -555,7 +566,7 @@ static int qjack_init_in(HWVoiceIn *hw, struct audsettings *as,
     return 0;
 }
 
-static void qjack_client_fini(QJackClient *c)
+static void qjack_client_fini_locked(QJackClient *c)
 {
     switch (c->state) {
     case QJACK_STATE_RUNNING:
@@ -564,28 +575,40 @@ static void qjack_client_fini(QJackClient *c)
 
     case QJACK_STATE_SHUTDOWN:
         jack_client_close(c->client);
+        c->client = NULL;
+
+        qjack_buffer_free(&c->fifo);
+        g_free(c->port);
+
+        c->state = QJACK_STATE_DISCONNECTED;
         /* fallthrough */
 
     case QJACK_STATE_DISCONNECTED:
         break;
     }
+}
 
-    qjack_buffer_free(&c->fifo);
+static void qjack_client_fini(QJackClient *c)
-    g_free(c->port);
+{
-
+    qemu_mutex_lock(&qjack_shutdown_lock);
-    c->state = QJACK_STATE_DISCONNECTED;
+    qjack_client_fini_locked(c);
+    qemu_mutex_unlock(&qjack_shutdown_lock);
 }
 
 static void qjack_fini_out(HWVoiceOut *hw)
 {
     QJackOut *jo = (QJackOut *)hw;
     qjack_client_fini(&jo->c);
+
+    qemu_bh_delete(jo->c.shutdown_bh);
 }
 
 static void qjack_fini_in(HWVoiceIn *hw)
 {
     QJackIn *ji = (QJackIn *)hw;
     qjack_client_fini(&ji->c);
+
+    qemu_bh_delete(ji->c.shutdown_bh);
 }
 
 static void qjack_enable_out(HWVoiceOut *hw, bool enable)
@@ -662,6 +685,7 @@ static void qjack_info(const char *msg)
 
 static void register_audio_jack(void)
 {
+    qemu_mutex_init(&qjack_shutdown_lock);
     audio_driver_register(&jack_driver);
     jack_set_thread_creator(qjack_thread_creator);
     jack_set_error_function(qjack_error);

hw/display/cirrus_vga.c

@@ -2105,7 +2105,7 @@ static void cirrus_vga_mem_write(void *opaque,
     } else {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "cirrus: mem_writeb 0x" TARGET_FMT_plx " "
-                      "value 0x%02" PRIu64 "\n", addr, mem_value);
+                      "value 0x%02" PRIx64 "\n", addr, mem_value);
     }
 }
 
@@ -2532,9 +2532,6 @@ static uint64_t cirrus_vga_ioport_read(void *opaque, hwaddr addr,
 	case 0x3c5:
 	    val = cirrus_vga_read_sr(c);
             break;
-#ifdef DEBUG_VGA_REG
-	    printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
-#endif
 	    break;
 	case 0x3c6:
 	    val = cirrus_read_hidden_dac(c);
@@ -2560,9 +2557,6 @@ static uint64_t cirrus_vga_ioport_read(void *opaque, hwaddr addr,
 	    break;
 	case 0x3cf:
 	    val = cirrus_vga_read_gr(c, s->gr_index);
-#ifdef DEBUG_VGA_REG
-	    printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
-#endif
 	    break;
 	case 0x3b4:
 	case 0x3d4:
@@ -2571,9 +2565,6 @@ static uint64_t cirrus_vga_ioport_read(void *opaque, hwaddr addr,
 	case 0x3b5:
 	case 0x3d5:
             val = cirrus_vga_read_cr(c, s->cr_index);
-#ifdef DEBUG_VGA_REG
-	    printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
-#endif
 	    break;
 	case 0x3ba:
 	case 0x3da:
@@ -2645,9 +2636,6 @@ static void cirrus_vga_ioport_write(void *opaque, hwaddr addr, uint64_t val,
 	s->sr_index = val;
 	break;
     case 0x3c5:
-#ifdef DEBUG_VGA_REG
-	printf("vga: write SR%x = 0x%02" PRIu64 "\n", s->sr_index, val);
-#endif
 	cirrus_vga_write_sr(c, val);
         break;
     case 0x3c6:
@@ -2670,9 +2658,6 @@ static void cirrus_vga_ioport_write(void *opaque, hwaddr addr, uint64_t val,
 	s->gr_index = val;
 	break;
     case 0x3cf:
-#ifdef DEBUG_VGA_REG
-	printf("vga: write GR%x = 0x%02" PRIu64 "\n", s->gr_index, val);
-#endif
 	cirrus_vga_write_gr(c, s->gr_index, val);
 	break;
     case 0x3b4:
@@ -2681,9 +2666,6 @@ static void cirrus_vga_ioport_write(void *opaque, hwaddr addr, uint64_t val,
 	break;
     case 0x3b5:
     case 0x3d5:
-#ifdef DEBUG_VGA_REG
-	printf("vga: write CR%x = 0x%02"PRIu64"\n", s->cr_index, val);
-#endif
 	cirrus_vga_write_cr(c, val);
 	break;
     case 0x3ba:

hw/usb/Kconfig

@@ -43,8 +43,7 @@ config USB_XHCI_PCI
 config USB_XHCI_NEC
     bool
     default y if PCI_DEVICES
-    depends on PCI
+    select USB_XHCI_PCI
-    select USB_XHCI
 
 config USB_XHCI_SYSBUS
     bool

hw/usb/hcd-xhci-nec.c

@@ -27,18 +27,37 @@
 
 #include "hcd-xhci-pci.h"
 
+typedef struct XHCINecState {
+    /*< private >*/
+    XHCIPciState parent_obj;
+    /*< public >*/
+    uint32_t flags;
+    uint32_t intrs;
+    uint32_t slots;
+} XHCINecState;
+
 static Property nec_xhci_properties[] = {
     DEFINE_PROP_ON_OFF_AUTO("msi", XHCIPciState, msi, ON_OFF_AUTO_AUTO),
     DEFINE_PROP_ON_OFF_AUTO("msix", XHCIPciState, msix, ON_OFF_AUTO_AUTO),
-    DEFINE_PROP_BIT("superspeed-ports-first", XHCIPciState,
+    DEFINE_PROP_BIT("superspeed-ports-first", XHCINecState, flags,
-                    xhci.flags, XHCI_FLAG_SS_FIRST, true),
+                    XHCI_FLAG_SS_FIRST, true),
-    DEFINE_PROP_BIT("force-pcie-endcap", XHCIPciState, xhci.flags,
+    DEFINE_PROP_BIT("force-pcie-endcap", XHCINecState, flags,
                     XHCI_FLAG_FORCE_PCIE_ENDCAP, false),
-    DEFINE_PROP_UINT32("intrs", XHCIPciState, xhci.numintrs, XHCI_MAXINTRS),
+    DEFINE_PROP_UINT32("intrs", XHCINecState, intrs, XHCI_MAXINTRS),
-    DEFINE_PROP_UINT32("slots", XHCIPciState, xhci.numslots, XHCI_MAXSLOTS),
+    DEFINE_PROP_UINT32("slots", XHCINecState, slots, XHCI_MAXSLOTS),
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static void nec_xhci_instance_init(Object *obj)
+{
+    XHCIPciState *pci = XHCI_PCI(obj);
+    XHCINecState *nec = container_of(pci, XHCINecState, parent_obj);
+
+    pci->xhci.flags    = nec->flags;
+    pci->xhci.numintrs = nec->intrs;
+    pci->xhci.numslots = nec->slots;
+}
+
 static void nec_xhci_class_init(ObjectClass *klass, void *data)
 {
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -53,6 +72,8 @@ static void nec_xhci_class_init(ObjectClass *klass, void *data)
 static const TypeInfo nec_xhci_info = {
     .name          = TYPE_NEC_XHCI,
     .parent        = TYPE_XHCI_PCI,
+    .instance_size = sizeof(XHCINecState),
+    .instance_init = nec_xhci_instance_init,
     .class_init    = nec_xhci_class_init,
 };
 

ui/console.c

@@ -270,10 +270,11 @@ void graphic_hw_update_done(QemuConsole *con)
 void graphic_hw_update(QemuConsole *con)
 {
     bool async = false;
+    con = con ? con : active_console;
     if (!con) {
-        con = active_console;
+        return;
     }
-    if (con && con->hw_ops->gfx_update) {
+    if (con->hw_ops->gfx_update) {
         con->hw_ops->gfx_update(con->hw);
         async = con->hw_ops->gfx_update_async;
     }