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

[Dr. David Alan Gilbert (git)]

From: "Dr. David Alan Gilbert" <address@hidden>

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 <address@hidden>

---
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