[Qemu-devel] [PATCH v3 0/2] vmstateify a bunch of rare devices

[Qemu-devel] [PATCH v3 0/2] vmstateify a bunch of rare devices

[Dr. David Alan Gilbert (git)]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

Two more register_savevm users converted to vmstate.
This is split out from an earlier series where some of the others
have gone in.

Note I've not been able to test the changes (other than build); I've not
got any model that uses them that successfully migrates even without the
changes.

Dave

v3
  A few fixes based on Peter's comments; mostly in converting what are
  now booleans to be used as booleans in most places, avoiding &=, using false
  and true.  Made 'timing' uint16_t rather than int16_t.

Dr. David Alan Gilbert (2):
  vmstateify tsc2005
  vmstateify tsc210x

 hw/input/tsc2005.c | 190 ++++++++++++++++++--------------------------
 hw/input/tsc210x.c | 227 ++++++++++++++++++++++++-----------------------------
 2 files changed, 179 insertions(+), 238 deletions(-)

-- 
2.7.4

[Qemu-devel] [PATCH v3 1/2] vmstateify tsc2005

[Dr. David Alan Gilbert (git)]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

I've converted the fields in it's main data structure
to fixed size types in ways that look sane.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

---
Note I haven't got one of these devices to compare with or
know much about them.
---
 hw/input/tsc2005.c | 190 +++++++++++++++++++++--------------------------------
 1 file changed, 75 insertions(+), 115 deletions(-)

diff --git a/hw/input/tsc2005.c b/hw/input/tsc2005.c
index 9b359aa..eb5320a 100644
--- a/hw/input/tsc2005.c
+++ b/hw/input/tsc2005.c
@@ -31,30 +31,31 @@ typedef struct {
     QEMUTimer *timer;
     uint16_t model;
 
-    int x, y;
-    int pressure;
+    int32_t x, y;
+    bool pressure;
 
-    int state, reg, irq, command;
+    uint8_t reg, state;
+    bool irq, command;
     uint16_t data, dav;
 
-    int busy;
-    int enabled;
-    int host_mode;
-    int function;
-    int nextfunction;
-    int precision;
-    int nextprecision;
-    int filter;
-    int pin_func;
-    int timing[2];
-    int noise;
-    int reset;
-    int pdst;
-    int pnd0;
+    bool busy;
+    bool enabled;
+    bool host_mode;
+    int8_t function;
+    int8_t nextfunction;
+    bool precision;
+    bool nextprecision;
+    uint16_t filter;
+    uint8_t pin_func;
+    uint16_t timing[2];
+    uint8_t noise;
+    bool reset;
+    bool pdst;
+    bool pnd0;
     uint16_t temp_thr[2];
     uint16_t aux_thr[2];
 
-    int tr[8];
+    int32_t tr[8];
 } TSC2005State;
 
 enum {
@@ -149,7 +150,7 @@ static uint16_t tsc2005_read(TSC2005State *s, int reg)
         ret = s->dav | (s->reset << 7) | (s->pdst << 2) | 0x0;
         s->dav &= ~(mode_regs[TSC_MODE_X_TEST] | mode_regs[TSC_MODE_Y_TEST] |
                         mode_regs[TSC_MODE_TS_TEST]);
-        s->reset = 1;
+        s->reset = true;
         return ret;
 
     case 0x8:	/* AUX high treshold */
@@ -196,14 +197,14 @@ static void tsc2005_write(TSC2005State *s, int reg, uint16_t data)
         break;
 
     case 0xc:	/* CFR0 */
-        s->host_mode = data >> 15;
+        s->host_mode = (data >> 15) != 0;
         if (s->enabled != !(data & 0x4000)) {
             s->enabled = !(data & 0x4000);
             fprintf(stderr, "%s: touchscreen sense %sabled\n",
                             __FUNCTION__, s->enabled ? "en" : "dis");
             if (s->busy && !s->enabled)
                 timer_del(s->timer);
-            s->busy &= s->enabled;
+            s->busy = s->busy && s->enabled;
         }
         s->nextprecision = (data >> 13) & 1;
         s->timing[0] = data & 0x1fff;
@@ -229,7 +230,7 @@ static void tsc2005_write(TSC2005State *s, int reg, uint16_t data)
 static void tsc2005_pin_update(TSC2005State *s)
 {
     int64_t expires;
-    int pin_state;
+    bool pin_state;
 
     switch (s->pin_func) {
     case 0:
@@ -253,7 +254,7 @@ static void tsc2005_pin_update(TSC2005State *s)
     case TSC_MODE_XYZ_SCAN:
     case TSC_MODE_XY_SCAN:
         if (!s->host_mode && s->dav)
-            s->enabled = 0;
+            s->enabled = false;
         if (!s->pressure)
             return;
         /* Fall through */
@@ -273,7 +274,7 @@ static void tsc2005_pin_update(TSC2005State *s)
     case TSC_MODE_Y_TEST:
     case TSC_MODE_TS_TEST:
         if (s->dav)
-            s->enabled = 0;
+            s->enabled = false;
         break;
 
     case TSC_MODE_RESERVED:
@@ -287,7 +288,7 @@ static void tsc2005_pin_update(TSC2005State *s)
     if (!s->enabled || s->busy)
         return;
 
-    s->busy = 1;
+    s->busy = true;
     s->precision = s->nextprecision;
     s->function = s->nextfunction;
     s->pdst = !s->pnd0;	/* Synchronised on internal clock */
@@ -300,17 +301,17 @@ static void tsc2005_reset(TSC2005State *s)
 {
     s->state = 0;
     s->pin_func = 0;
-    s->enabled = 0;
-    s->busy = 0;
-    s->nextprecision = 0;
+    s->enabled = false;
+    s->busy = false;
+    s->nextprecision = false;
     s->nextfunction = 0;
     s->timing[0] = 0;
     s->timing[1] = 0;
-    s->irq = 0;
+    s->irq = false;
     s->dav = 0;
-    s->reset = 0;
-    s->pdst = 1;
-    s->pnd0 = 0;
+    s->reset = false;
+    s->pdst = true;
+    s->pnd0 = false;
     s->function = -1;
     s->temp_thr[0] = 0x000;
     s->temp_thr[1] = 0xfff;
@@ -340,7 +341,7 @@ static uint8_t tsc2005_txrx_word(void *opaque, uint8_t value)
                                     __FUNCTION__, s->enabled ? "en" : "dis");
                     if (s->busy && !s->enabled)
                         timer_del(s->timer);
-                    s->busy &= s->enabled;
+                    s->busy = s->busy && s->enabled;
                 }
                 tsc2005_pin_update(s);
             }
@@ -407,7 +408,7 @@ static void tsc2005_timer_tick(void *opaque)
     if (!s->busy)
         return;
 
-    s->busy = 0;
+    s->busy = false;
     s->dav |= mode_regs[s->function];
     s->function = -1;
     tsc2005_pin_update(s);
@@ -434,86 +435,9 @@ static void tsc2005_touchscreen_event(void *opaque,
         tsc2005_pin_update(s);
 }
 
-static void tsc2005_save(QEMUFile *f, void *opaque)
+static int tsc2005_post_load(void *opaque, int version_id)
 {
     TSC2005State *s = (TSC2005State *) opaque;
-    int i;
-
-    qemu_put_be16(f, s->x);
-    qemu_put_be16(f, s->y);
-    qemu_put_byte(f, s->pressure);
-
-    qemu_put_byte(f, s->state);
-    qemu_put_byte(f, s->reg);
-    qemu_put_byte(f, s->command);
-
-    qemu_put_byte(f, s->irq);
-    qemu_put_be16s(f, &s->dav);
-    qemu_put_be16s(f, &s->data);
-
-    timer_put(f, s->timer);
-    qemu_put_byte(f, s->enabled);
-    qemu_put_byte(f, s->host_mode);
-    qemu_put_byte(f, s->function);
-    qemu_put_byte(f, s->nextfunction);
-    qemu_put_byte(f, s->precision);
-    qemu_put_byte(f, s->nextprecision);
-    qemu_put_be16(f, s->filter);
-    qemu_put_byte(f, s->pin_func);
-    qemu_put_be16(f, s->timing[0]);
-    qemu_put_be16(f, s->timing[1]);
-    qemu_put_be16s(f, &s->temp_thr[0]);
-    qemu_put_be16s(f, &s->temp_thr[1]);
-    qemu_put_be16s(f, &s->aux_thr[0]);
-    qemu_put_be16s(f, &s->aux_thr[1]);
-    qemu_put_be32(f, s->noise);
-    qemu_put_byte(f, s->reset);
-    qemu_put_byte(f, s->pdst);
-    qemu_put_byte(f, s->pnd0);
-
-    for (i = 0; i < 8; i ++)
-        qemu_put_be32(f, s->tr[i]);
-}
-
-static int tsc2005_load(QEMUFile *f, void *opaque, int version_id)
-{
-    TSC2005State *s = (TSC2005State *) opaque;
-    int i;
-
-    s->x = qemu_get_be16(f);
-    s->y = qemu_get_be16(f);
-    s->pressure = qemu_get_byte(f);
-
-    s->state = qemu_get_byte(f);
-    s->reg = qemu_get_byte(f);
-    s->command = qemu_get_byte(f);
-
-    s->irq = qemu_get_byte(f);
-    qemu_get_be16s(f, &s->dav);
-    qemu_get_be16s(f, &s->data);
-
-    timer_get(f, s->timer);
-    s->enabled = qemu_get_byte(f);
-    s->host_mode = qemu_get_byte(f);
-    s->function = qemu_get_byte(f);
-    s->nextfunction = qemu_get_byte(f);
-    s->precision = qemu_get_byte(f);
-    s->nextprecision = qemu_get_byte(f);
-    s->filter = qemu_get_be16(f);
-    s->pin_func = qemu_get_byte(f);
-    s->timing[0] = qemu_get_be16(f);
-    s->timing[1] = qemu_get_be16(f);
-    qemu_get_be16s(f, &s->temp_thr[0]);
-    qemu_get_be16s(f, &s->temp_thr[1]);
-    qemu_get_be16s(f, &s->aux_thr[0]);
-    qemu_get_be16s(f, &s->aux_thr[1]);
-    s->noise = qemu_get_be32(f);
-    s->reset = qemu_get_byte(f);
-    s->pdst = qemu_get_byte(f);
-    s->pnd0 = qemu_get_byte(f);
-
-    for (i = 0; i < 8; i ++)
-        s->tr[i] = qemu_get_be32(f);
 
     s->busy = timer_pending(s->timer);
     tsc2005_pin_update(s);
@@ -521,6 +445,42 @@ static int tsc2005_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
 
+static const VMStateDescription vmstate_tsc2005 = {
+    .name = "tsc2005",
+    .version_id = 2,
+    .minimum_version_id = 2,
+    .post_load = tsc2005_post_load,
+    .fields      = (VMStateField []) {
+        VMSTATE_BOOL(pressure, TSC2005State),
+        VMSTATE_BOOL(irq, TSC2005State),
+        VMSTATE_BOOL(command, TSC2005State),
+        VMSTATE_BOOL(enabled, TSC2005State),
+        VMSTATE_BOOL(host_mode, TSC2005State),
+        VMSTATE_BOOL(reset, TSC2005State),
+        VMSTATE_BOOL(pdst, TSC2005State),
+        VMSTATE_BOOL(pnd0, TSC2005State),
+        VMSTATE_BOOL(precision, TSC2005State),
+        VMSTATE_BOOL(nextprecision, TSC2005State),
+        VMSTATE_UINT8(reg, TSC2005State),
+        VMSTATE_UINT8(state, TSC2005State),
+        VMSTATE_UINT16(data, TSC2005State),
+        VMSTATE_UINT16(dav, TSC2005State),
+        VMSTATE_UINT16(filter, TSC2005State),
+        VMSTATE_INT8(nextfunction, TSC2005State),
+        VMSTATE_INT8(function, TSC2005State),
+        VMSTATE_INT32(x, TSC2005State),
+        VMSTATE_INT32(y, TSC2005State),
+        VMSTATE_TIMER_PTR(timer, TSC2005State),
+        VMSTATE_UINT8(pin_func, TSC2005State),
+        VMSTATE_UINT16_ARRAY(timing, TSC2005State, 2),
+        VMSTATE_UINT8(noise, TSC2005State),
+        VMSTATE_UINT16_ARRAY(temp_thr, TSC2005State, 2),
+        VMSTATE_UINT16_ARRAY(aux_thr, TSC2005State, 2),
+        VMSTATE_INT32_ARRAY(tr, TSC2005State, 8),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 void *tsc2005_init(qemu_irq pintdav)
 {
     TSC2005State *s;
@@ -529,8 +489,8 @@ void *tsc2005_init(qemu_irq pintdav)
             g_malloc0(sizeof(TSC2005State));
     s->x = 400;
     s->y = 240;
-    s->pressure = 0;
-    s->precision = s->nextprecision = 0;
+    s->pressure = false;
+    s->precision = s->nextprecision = false;
     s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, tsc2005_timer_tick, s);
     s->pint = pintdav;
     s->model = 0x2005;
@@ -550,7 +510,7 @@ void *tsc2005_init(qemu_irq pintdav)
                     "QEMU TSC2005-driven Touchscreen");
 
     qemu_register_reset((void *) tsc2005_reset, s);
-    register_savevm(NULL, "tsc2005", -1, 0, tsc2005_save, tsc2005_load, s);
+    vmstate_register(NULL, 0, &vmstate_tsc2005, s);
 
     return s;
 }
-- 
2.7.4

[Qemu-devel] [PATCH v3 2/2] vmstateify tsc210x

[Dr. David Alan Gilbert (git)]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

I'm now saving all 3 of the pll entries; only 2 were saved before.
There are a couple of times that were previously stored as offsets
from 'now' calculated before saving;  with vmstate it's easier
to store the 'now' and fix it up on reload.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
Note I haven't got one of these devices to compare with or
know much about them.
---
 hw/input/tsc210x.c | 227 ++++++++++++++++++++++++-----------------------------
 1 file changed, 104 insertions(+), 123 deletions(-)

diff --git a/hw/input/tsc210x.c b/hw/input/tsc210x.c
index 93ca374..b068343 100644
--- a/hw/input/tsc210x.c
+++ b/hw/input/tsc210x.c
@@ -47,24 +47,25 @@ typedef struct {
     uint8_t out_fifo[16384];
     uint16_t model;
 
-    int x, y;
-    int pressure;
-
-    int state, page, offset, irq;
-    uint16_t command, dav;
-
-    int busy;
-    int enabled;
-    int host_mode;
-    int function;
-    int nextfunction;
-    int precision;
-    int nextprecision;
-    int filter;
-    int pin_func;
-    int ref;
-    int timing;
-    int noise;
+    int32_t x, y;
+    bool pressure;
+
+    uint8_t page, offset;
+    uint16_t dav;
+
+    bool state;
+    bool irq;
+    bool command;
+    bool busy;
+    bool enabled;
+    bool host_mode;
+    uint8_t function, nextfunction;
+    uint8_t precision, nextprecision;
+    uint8_t filter;
+    uint8_t pin_func;
+    uint8_t ref;
+    uint8_t timing;
+    uint8_t noise;
 
     uint16_t audio_ctrl1;
     uint16_t audio_ctrl2;
@@ -72,7 +73,7 @@ typedef struct {
     uint16_t pll[3];
     uint16_t volume;
     int64_t volume_change;
-    int softstep;
+    bool softstep;
     uint16_t dac_power;
     int64_t powerdown;
     uint16_t filter_data[0x14];
@@ -93,6 +94,7 @@ typedef struct {
         int mode;
         int intr;
     } kb;
+    int64_t now; /* Time at migration */
 } TSC210xState;
 
 static const int resolution[4] = { 12, 8, 10, 12 };
@@ -154,14 +156,14 @@ static const uint16_t mode_regs[16] = {
 
 static void tsc210x_reset(TSC210xState *s)
 {
-    s->state = 0;
+    s->state = false;
     s->pin_func = 2;
-    s->enabled = 0;
-    s->busy = 0;
+    s->enabled = false;
+    s->busy = false;
     s->nextfunction = 0;
     s->ref = 0;
     s->timing = 0;
-    s->irq = 0;
+    s->irq = false;
     s->dav = 0;
 
     s->audio_ctrl1 = 0x0000;
@@ -172,7 +174,7 @@ static void tsc210x_reset(TSC210xState *s)
     s->pll[2] = 0x1fff;
     s->volume = 0xffff;
     s->dac_power = 0x8540;
-    s->softstep = 1;
+    s->softstep = true;
     s->volume_change = 0;
     s->powerdown = 0;
     s->filter_data[0x00] = 0x6be3;
@@ -566,7 +568,7 @@ static void tsc2102_control_register_write(
         s->enabled = !(value & 0x4000);
         if (s->busy && !s->enabled)
             timer_del(s->timer);
-        s->busy &= s->enabled;
+        s->busy = s->busy && s->enabled;
         s->nextfunction = (value >> 10) & 0xf;
         s->nextprecision = (value >> 8) & 3;
         s->filter = value & 0xff;
@@ -773,7 +775,7 @@ static void tsc2102_audio_register_write(
 static void tsc210x_pin_update(TSC210xState *s)
 {
     int64_t expires;
-    int pin_state;
+    bool pin_state;
 
     switch (s->pin_func) {
     case 0:
@@ -788,7 +790,7 @@ static void tsc210x_pin_update(TSC210xState *s)
     }
 
     if (!s->enabled)
-        pin_state = 0;
+        pin_state = false;
 
     if (pin_state != s->irq) {
         s->irq = pin_state;
@@ -814,7 +816,7 @@ static void tsc210x_pin_update(TSC210xState *s)
     case TSC_MODE_TEMP1:
     case TSC_MODE_TEMP2:
         if (s->dav)
-            s->enabled = 0;
+            s->enabled = false;
         break;
 
     case TSC_MODE_AUX_SCAN:
@@ -832,7 +834,7 @@ static void tsc210x_pin_update(TSC210xState *s)
     if (!s->enabled || s->busy || s->dav)
         return;
 
-    s->busy = 1;
+    s->busy = true;
     s->precision = s->nextprecision;
     s->function = s->nextfunction;
     expires = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
@@ -867,7 +869,7 @@ static uint16_t tsc210x_read(TSC210xState *s)
 
     /* Allow sequential reads.  */
     s->offset ++;
-    s->state = 0;
+    s->state = false;
     return ret;
 }
 
@@ -878,10 +880,10 @@ static void tsc210x_write(TSC210xState *s, uint16_t value)
      * command and data every second time.
      */
     if (!s->state) {
-        s->command = value >> 15;
+        s->command = (value >> 15) != 0;
         s->page = (value >> 11) & 0x0f;
         s->offset = (value >> 5) & 0x3f;
-        s->state = 1;
+        s->state = true;
     } else {
         if (s->command)
             fprintf(stderr, "tsc210x_write: SPI overrun!\n");
@@ -901,7 +903,7 @@ static void tsc210x_write(TSC210xState *s, uint16_t value)
             }
 
         tsc210x_pin_update(s);
-        s->state = 0;
+        s->state = false;
     }
 }
 
@@ -933,7 +935,7 @@ static void tsc210x_timer_tick(void *opaque)
     if (!s->busy)
         return;
 
-    s->busy = 0;
+    s->busy = false;
     s->dav |= mode_regs[s->function];
     tsc210x_pin_update(s);
     qemu_irq_lower(s->davint);
@@ -974,108 +976,34 @@ static void tsc210x_i2s_set_rate(TSC210xState *s, int in, int out)
     s->i2s_rx_rate = in;
 }
 
-static void tsc210x_save(QEMUFile *f, void *opaque)
+static void tsc210x_pre_save(void *opaque)
 {
     TSC210xState *s = (TSC210xState *) opaque;
-    int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
-    int i;
-
-    qemu_put_be16(f, s->x);
-    qemu_put_be16(f, s->y);
-    qemu_put_byte(f, s->pressure);
-
-    qemu_put_byte(f, s->state);
-    qemu_put_byte(f, s->page);
-    qemu_put_byte(f, s->offset);
-    qemu_put_byte(f, s->command);
-
-    qemu_put_byte(f, s->irq);
-    qemu_put_be16s(f, &s->dav);
-
-    timer_put(f, s->timer);
-    qemu_put_byte(f, s->enabled);
-    qemu_put_byte(f, s->host_mode);
-    qemu_put_byte(f, s->function);
-    qemu_put_byte(f, s->nextfunction);
-    qemu_put_byte(f, s->precision);
-    qemu_put_byte(f, s->nextprecision);
-    qemu_put_byte(f, s->filter);
-    qemu_put_byte(f, s->pin_func);
-    qemu_put_byte(f, s->ref);
-    qemu_put_byte(f, s->timing);
-    qemu_put_be32(f, s->noise);
-
-    qemu_put_be16s(f, &s->audio_ctrl1);
-    qemu_put_be16s(f, &s->audio_ctrl2);
-    qemu_put_be16s(f, &s->audio_ctrl3);
-    qemu_put_be16s(f, &s->pll[0]);
-    qemu_put_be16s(f, &s->pll[1]);
-    qemu_put_be16s(f, &s->volume);
-    qemu_put_sbe64(f, (s->volume_change - now));
-    qemu_put_sbe64(f, (s->powerdown - now));
-    qemu_put_byte(f, s->softstep);
-    qemu_put_be16s(f, &s->dac_power);
-
-    for (i = 0; i < 0x14; i ++)
-        qemu_put_be16s(f, &s->filter_data[i]);
+    s->now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
 }
 
-static int tsc210x_load(QEMUFile *f, void *opaque, int version_id)
+static int tsc210x_post_load(void *opaque, int version_id)
 {
     TSC210xState *s = (TSC210xState *) opaque;
     int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
-    int i;
-
-    s->x = qemu_get_be16(f);
-    s->y = qemu_get_be16(f);
-    s->pressure = qemu_get_byte(f);
-
-    s->state = qemu_get_byte(f);
-    s->page = qemu_get_byte(f);
-    s->offset = qemu_get_byte(f);
-    s->command = qemu_get_byte(f);
 
-    s->irq = qemu_get_byte(f);
-    qemu_get_be16s(f, &s->dav);
-
-    timer_get(f, s->timer);
-    s->enabled = qemu_get_byte(f);
-    s->host_mode = qemu_get_byte(f);
-    s->function = qemu_get_byte(f);
-    if (s->function < 0 || s->function >= ARRAY_SIZE(mode_regs)) {
+    if (s->function >= ARRAY_SIZE(mode_regs)) {
         return -EINVAL;
     }
-    s->nextfunction = qemu_get_byte(f);
-    if (s->nextfunction < 0 || s->nextfunction >= ARRAY_SIZE(mode_regs)) {
+    if (s->nextfunction >= ARRAY_SIZE(mode_regs)) {
         return -EINVAL;
     }
-    s->precision = qemu_get_byte(f);
-    if (s->precision < 0 || s->precision >= ARRAY_SIZE(resolution)) {
+    if (s->precision >= ARRAY_SIZE(resolution)) {
         return -EINVAL;
     }
-    s->nextprecision = qemu_get_byte(f);
-    if (s->nextprecision < 0 || s->nextprecision >= ARRAY_SIZE(resolution)) {
+    if (s->nextprecision >= ARRAY_SIZE(resolution)) {
         return -EINVAL;
     }
-    s->filter = qemu_get_byte(f);
-    s->pin_func = qemu_get_byte(f);
-    s->ref = qemu_get_byte(f);
-    s->timing = qemu_get_byte(f);
-    s->noise = qemu_get_be32(f);
-
-    qemu_get_be16s(f, &s->audio_ctrl1);
-    qemu_get_be16s(f, &s->audio_ctrl2);
-    qemu_get_be16s(f, &s->audio_ctrl3);
-    qemu_get_be16s(f, &s->pll[0]);
-    qemu_get_be16s(f, &s->pll[1]);
-    qemu_get_be16s(f, &s->volume);
-    s->volume_change = qemu_get_sbe64(f) + now;
-    s->powerdown = qemu_get_sbe64(f) + now;
-    s->softstep = qemu_get_byte(f);
-    qemu_get_be16s(f, &s->dac_power);
-
-    for (i = 0; i < 0x14; i ++)
-        qemu_get_be16s(f, &s->filter_data[i]);
+
+    s->volume_change -= s->now;
+    s->volume_change += now;
+    s->powerdown -= s->now;
+    s->powerdown += now;
 
     s->busy = timer_pending(s->timer);
     qemu_set_irq(s->pint, !s->irq);
@@ -1084,6 +1012,60 @@ static int tsc210x_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
 
+static VMStateField vmstatefields_tsc210x[] = {
+    VMSTATE_BOOL(enabled, TSC210xState),
+    VMSTATE_BOOL(host_mode, TSC210xState),
+    VMSTATE_BOOL(irq, TSC210xState),
+    VMSTATE_BOOL(command, TSC210xState),
+    VMSTATE_BOOL(pressure, TSC210xState),
+    VMSTATE_BOOL(softstep, TSC210xState),
+    VMSTATE_BOOL(state, TSC210xState),
+    VMSTATE_UINT16(dav, TSC210xState),
+    VMSTATE_INT32(x, TSC210xState),
+    VMSTATE_INT32(y, TSC210xState),
+    VMSTATE_UINT8(offset, TSC210xState),
+    VMSTATE_UINT8(page, TSC210xState),
+    VMSTATE_UINT8(filter, TSC210xState),
+    VMSTATE_UINT8(pin_func, TSC210xState),
+    VMSTATE_UINT8(ref, TSC210xState),
+    VMSTATE_UINT8(timing, TSC210xState),
+    VMSTATE_UINT8(noise, TSC210xState),
+    VMSTATE_UINT8(function, TSC210xState),
+    VMSTATE_UINT8(nextfunction, TSC210xState),
+    VMSTATE_UINT8(precision, TSC210xState),
+    VMSTATE_UINT8(nextprecision, TSC210xState),
+    VMSTATE_UINT16(audio_ctrl1, TSC210xState),
+    VMSTATE_UINT16(audio_ctrl2, TSC210xState),
+    VMSTATE_UINT16(audio_ctrl3, TSC210xState),
+    VMSTATE_UINT16_ARRAY(pll, TSC210xState, 3),
+    VMSTATE_UINT16(volume, TSC210xState),
+    VMSTATE_UINT16(dac_power, TSC210xState),
+    VMSTATE_INT64(volume_change, TSC210xState),
+    VMSTATE_INT64(powerdown, TSC210xState),
+    VMSTATE_INT64(now, TSC210xState),
+    VMSTATE_UINT16_ARRAY(filter_data, TSC210xState, 0x14),
+    VMSTATE_TIMER_PTR(timer, TSC210xState),
+    VMSTATE_END_OF_LIST()
+};
+
+static const VMStateDescription vmstate_tsc2102 = {
+    .name = "tsc2102",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .pre_save = tsc210x_pre_save,
+    .post_load = tsc210x_post_load,
+    .fields = vmstatefields_tsc210x,
+};
+
+static const VMStateDescription vmstate_tsc2301 = {
+    .name = "tsc2301",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .pre_save = tsc210x_pre_save,
+    .post_load = tsc210x_post_load,
+    .fields = vmstatefields_tsc210x,
+};
+
 uWireSlave *tsc2102_init(qemu_irq pint)
 {
     TSC210xState *s;
@@ -1125,8 +1107,7 @@ uWireSlave *tsc2102_init(qemu_irq pint)
     AUD_register_card(s->name, &s->card);
 
     qemu_register_reset((void *) tsc210x_reset, s);
-    register_savevm(NULL, s->name, -1, 0,
-                    tsc210x_save, tsc210x_load, s);
+    vmstate_register(NULL, 0, &vmstate_tsc2102, s);
 
     return &s->chip;
 }
@@ -1174,7 +1155,7 @@ uWireSlave *tsc2301_init(qemu_irq penirq, qemu_irq kbirq, qemu_irq dav)
     AUD_register_card(s->name, &s->card);
 
     qemu_register_reset((void *) tsc210x_reset, s);
-    register_savevm(NULL, s->name, -1, 0, tsc210x_save, tsc210x_load, s);
+    vmstate_register(NULL, 0, &vmstate_tsc2301, s);
 
     return &s->chip;
 }
-- 
2.7.4

Re: [Qemu-devel] [PATCH v3 0/2] vmstateify a bunch of rare devices

[Peter Maydell]

On 27 September 2016 at 05:02, Dr. David Alan Gilbert (git)
<dgilbert@redhat.com> wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>
> Two more register_savevm users converted to vmstate.
> This is split out from an earlier series where some of the others
> have gone in.
>
> Note I've not been able to test the changes (other than build); I've not
> got any model that uses them that successfully migrates even without the
> changes.
>
> Dave
>
> v3
>   A few fixes based on Peter's comments; mostly in converting what are
>   now booleans to be used as booleans in most places, avoiding &=, using false
>   and true.  Made 'timing' uint16_t rather than int16_t.

Applied to target-arm.next, thanks.

-- PMM