static
int little_lock(sqlite3_file *file, int lock) {
int res;
little_file *self = (little_file*)file;
trace("LOCK UP %s...\n", locktypeName(lock));
fflush(stdout);
switch (lock) {
case SQLITE_LOCK_SHARED:
res = get_shared(self->name);
if (res < 0) trace ("Optimistic locking! forge ahead\n");
else self->shared_lock_number = res;
// don't worry if we don't get the lock, we have versioning
res = get_version(self->name, &(self->version), &(self->nextfreeblock));
if (errno == ENOENT) res = 0;
break;
case SQLITE_LOCK_RESERVED:
res = get_reserved(self->name);
break;
case SQLITE_LOCK_EXCLUSIVE:
res = get_exclusive(self->name, self->shared_lock_number);
self->shared_lock_number = -1;
++(self->version);
break;
default: return SQLITE_ERROR;
}
if (res == -EAGAIN) return SQLITE_BUSY;
if (res < 0) return SQLITE_ERROR;
trace("LOCK UP %s OK\n", locktypeName(lock));
return SQLITE_OK;
}
static int get_data(void *data)
{
struct intel_gpio *gpio = data;
struct drm_psb_private *dev_priv = gpio->dev_priv;
u32 reserved = get_reserved(gpio);
GMBUS_REG_WRITE(gpio->reg, reserved | GPIO_DATA_DIR_MASK);
GMBUS_REG_WRITE(gpio->reg, reserved);
return (GMBUS_REG_READ(gpio->reg) & GPIO_DATA_VAL_IN) != 0;
}
static int get_clock(void *data)
{
struct intel_gpio *gpio = data;
struct drm_i915_private *dev_priv = gpio->dev_priv;
u32 reserved = get_reserved(gpio);
I915_WRITE_NOTRACE(gpio->reg, reserved | GPIO_CLOCK_DIR_MASK);
I915_WRITE_NOTRACE(gpio->reg, reserved);
return (I915_READ_NOTRACE(gpio->reg) & GPIO_CLOCK_VAL_IN) != 0;
}
static int get_data(void *data)
{
struct intel_gmbus *bus = data;
struct drm_i915_private *dev_priv = bus->dev_priv;
u32 reserved = get_reserved(bus);
I915_WRITE_NOTRACE(bus->gpio_reg, reserved | GPIO_DATA_DIR_MASK);
I915_WRITE_NOTRACE(bus->gpio_reg, reserved);
return (I915_READ_NOTRACE(bus->gpio_reg) & GPIO_DATA_VAL_IN) != 0;
}
static int get_data(device_t adapter)
{
struct intel_iic_softc *sc = device_get_softc(adapter);
struct intel_gmbus *bus = sc->bus;
struct drm_i915_private *dev_priv = bus->dev_priv;
u32 reserved = get_reserved(bus);
I915_WRITE_NOTRACE(bus->gpio_reg, reserved | GPIO_DATA_DIR_MASK);
I915_WRITE_NOTRACE(bus->gpio_reg, reserved);
return (I915_READ_NOTRACE(bus->gpio_reg) & GPIO_DATA_VAL_IN) != 0;
}
static void set_data(void *data, int state_high)
{
struct intel_gpio *gpio = data;
struct drm_psb_private *dev_priv = gpio->dev_priv;
u32 reserved = get_reserved(gpio);
u32 data_bits;
if (state_high)
data_bits = GPIO_DATA_DIR_IN | GPIO_DATA_DIR_MASK;
else
data_bits = GPIO_DATA_DIR_OUT | GPIO_DATA_DIR_MASK |
GPIO_DATA_VAL_MASK;
GMBUS_REG_WRITE(gpio->reg, reserved | data_bits);
GMBUS_REG_READ(gpio->reg);
}
static void set_clock(void *data, int state_high)
{
struct intel_gpio *gpio = data;
struct drm_psb_private *dev_priv = gpio->dev_priv;
u32 reserved = get_reserved(gpio);
u32 clock_bits;
if (state_high)
clock_bits = GPIO_CLOCK_DIR_IN | GPIO_CLOCK_DIR_MASK;
else
clock_bits = GPIO_CLOCK_DIR_OUT | GPIO_CLOCK_DIR_MASK |
GPIO_CLOCK_VAL_MASK;
GMBUS_REG_WRITE(gpio->reg, reserved | clock_bits);
GMBUS_REG_READ(gpio->reg); /* Posting */
}
static void set_clock(void *data, int state_high)
{
struct intel_gpio *gpio = data;
struct drm_i915_private *dev_priv = gpio->dev_priv;
u32 reserved = get_reserved(gpio);
u32 clock_bits;
if (state_high)
clock_bits = GPIO_CLOCK_DIR_IN | GPIO_CLOCK_DIR_MASK;
else
clock_bits = GPIO_CLOCK_DIR_OUT | GPIO_CLOCK_DIR_MASK |
GPIO_CLOCK_VAL_MASK;
I915_WRITE_NOTRACE(gpio->reg, reserved | clock_bits);
POSTING_READ(gpio->reg);
}
static void set_data(void *data, int state_high)
{
struct intel_gmbus *bus = data;
struct drm_i915_private *dev_priv = bus->dev_priv;
u32 reserved = get_reserved(bus);
u32 data_bits;
if (state_high)
data_bits = GPIO_DATA_DIR_IN | GPIO_DATA_DIR_MASK;
else
data_bits = GPIO_DATA_DIR_OUT | GPIO_DATA_DIR_MASK |
GPIO_DATA_VAL_MASK;
I915_WRITE_NOTRACE(bus->gpio_reg, reserved | data_bits);
POSTING_READ(bus->gpio_reg);
}
static void set_data(device_t adapter, int state_high)
{
struct intel_iic_softc *sc = device_get_softc(adapter);
struct intel_gmbus *bus = sc->bus;
struct drm_i915_private *dev_priv = bus->dev_priv;
u32 reserved = get_reserved(bus);
u32 data_bits;
if (state_high)
data_bits = GPIO_DATA_DIR_IN | GPIO_DATA_DIR_MASK;
else
data_bits = GPIO_DATA_DIR_OUT | GPIO_DATA_DIR_MASK |
GPIO_DATA_VAL_MASK;
I915_WRITE_NOTRACE(bus->gpio_reg, reserved | data_bits);
POSTING_READ(bus->gpio_reg);
}
