INTERRUPT_MASK_DISCONNECT = 4,
};
+/**
+ * struct ps3_vuart_port_priv - private vuart device data.
+ */
+
+struct ps3_vuart_port_priv {
+ u64 interrupt_mask;
+
+ struct {
+ spinlock_t lock;
+ struct list_head head;
+ } tx_list;
+ struct {
+ struct ps3_vuart_work work;
+ unsigned long bytes_held;
+ spinlock_t lock;
+ struct list_head head;
+ } rx_list;
+ struct ps3_vuart_stats stats;
+};
+
+static struct ps3_vuart_port_priv *to_port_priv(
+ struct ps3_system_bus_device *dev)
+{
+ BUG_ON(!dev);
+ BUG_ON(!dev->driver_priv);
+ return (struct ps3_vuart_port_priv *)dev->driver_priv;
+}
+
/**
* struct ports_bmp - bitmap indicating ports needing service.
*
pr_debug("%s:%d: ports_bmp: %016lxh\n", func, line, bmp->status);
}
-static int ps3_vuart_match_id_to_port(enum ps3_match_id match_id,
- unsigned int *port_number)
-{
- switch(match_id) {
- case PS3_MATCH_ID_AV_SETTINGS:
- *port_number = 0;
- return 0;
- case PS3_MATCH_ID_SYSTEM_MANAGER:
- *port_number = 2;
- return 0;
- default:
- WARN_ON(1);
- *port_number = UINT_MAX;
- return -EINVAL;
- };
-}
-
#define dump_port_params(_b) _dump_port_params(_b, __func__, __LINE__)
static void __maybe_unused _dump_port_params(unsigned int port_number,
const char* func, int line)
unsigned long tx;
};
-int ps3_vuart_get_triggers(struct ps3_vuart_port_device *dev,
+int ps3_vuart_get_triggers(struct ps3_system_bus_device *dev,
struct vuart_triggers *trig)
{
int result;
unsigned long size;
unsigned long val;
- result = lv1_get_virtual_uart_param(dev->priv->port_number,
+ result = lv1_get_virtual_uart_param(dev->port_number,
PARAM_TX_TRIGGER, &trig->tx);
if (result) {
return result;
}
- result = lv1_get_virtual_uart_param(dev->priv->port_number,
+ result = lv1_get_virtual_uart_param(dev->port_number,
PARAM_RX_BUF_SIZE, &size);
if (result) {
return result;
}
- result = lv1_get_virtual_uart_param(dev->priv->port_number,
+ result = lv1_get_virtual_uart_param(dev->port_number,
PARAM_RX_TRIGGER, &val);
if (result) {
return result;
}
-int ps3_vuart_set_triggers(struct ps3_vuart_port_device *dev, unsigned int tx,
+int ps3_vuart_set_triggers(struct ps3_system_bus_device *dev, unsigned int tx,
unsigned int rx)
{
int result;
unsigned long size;
- result = lv1_set_virtual_uart_param(dev->priv->port_number,
+ result = lv1_set_virtual_uart_param(dev->port_number,
PARAM_TX_TRIGGER, tx);
if (result) {
return result;
}
- result = lv1_get_virtual_uart_param(dev->priv->port_number,
+ result = lv1_get_virtual_uart_param(dev->port_number,
PARAM_RX_BUF_SIZE, &size);
if (result) {
return result;
}
- result = lv1_set_virtual_uart_param(dev->priv->port_number,
+ result = lv1_set_virtual_uart_param(dev->port_number,
PARAM_RX_TRIGGER, size - rx);
if (result) {
return result;
}
-static int ps3_vuart_get_rx_bytes_waiting(struct ps3_vuart_port_device *dev,
+static int ps3_vuart_get_rx_bytes_waiting(struct ps3_system_bus_device *dev,
u64 *bytes_waiting)
{
- int result = lv1_get_virtual_uart_param(dev->priv->port_number,
+ int result;
+
+ result = lv1_get_virtual_uart_param(dev->port_number,
PARAM_RX_BYTES, bytes_waiting);
if (result)
return result;
}
-static int ps3_vuart_set_interrupt_mask(struct ps3_vuart_port_device *dev,
+/**
+ * ps3_vuart_set_interrupt_mask - Enable/disable the port interrupt sources.
+ * @dev: The struct ps3_system_bus_device instance.
+ * @bmp: Logical OR of enum vuart_interrupt_mask values. A zero bit disables.
+ */
+
+static int ps3_vuart_set_interrupt_mask(struct ps3_system_bus_device *dev,
unsigned long mask)
{
int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
dev_dbg(&dev->core, "%s:%d: %lxh\n", __func__, __LINE__, mask);
- dev->priv->interrupt_mask = mask;
+ priv->interrupt_mask = mask;
- result = lv1_set_virtual_uart_param(dev->priv->port_number,
- PARAM_INTERRUPT_MASK, dev->priv->interrupt_mask);
+ result = lv1_set_virtual_uart_param(dev->port_number,
+ PARAM_INTERRUPT_MASK, priv->interrupt_mask);
if (result)
dev_dbg(&dev->core, "%s:%d: interrupt_mask failed: %s\n",
return result;
}
-static int ps3_vuart_get_interrupt_status(struct ps3_vuart_port_device *dev,
+static int ps3_vuart_get_interrupt_status(struct ps3_system_bus_device *dev,
unsigned long *status)
{
+ int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
u64 tmp;
- int result = lv1_get_virtual_uart_param(dev->priv->port_number,
+
+ result = lv1_get_virtual_uart_param(dev->port_number,
PARAM_INTERRUPT_STATUS, &tmp);
if (result)
dev_dbg(&dev->core, "%s:%d: interrupt_status failed: %s\n",
__func__, __LINE__, ps3_result(result));
- *status = tmp & dev->priv->interrupt_mask;
+ *status = tmp & priv->interrupt_mask;
dev_dbg(&dev->core, "%s:%d: m %lxh, s %lxh, m&s %lxh\n",
- __func__, __LINE__, dev->priv->interrupt_mask, tmp, *status);
+ __func__, __LINE__, priv->interrupt_mask, tmp, *status);
return result;
}
-int ps3_vuart_enable_interrupt_tx(struct ps3_vuart_port_device *dev)
+int ps3_vuart_enable_interrupt_tx(struct ps3_system_bus_device *dev)
{
- return (dev->priv->interrupt_mask & INTERRUPT_MASK_TX) ? 0
- : ps3_vuart_set_interrupt_mask(dev, dev->priv->interrupt_mask
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+
+ return (priv->interrupt_mask & INTERRUPT_MASK_TX) ? 0
+ : ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask
| INTERRUPT_MASK_TX);
}
-int ps3_vuart_enable_interrupt_rx(struct ps3_vuart_port_device *dev)
+int ps3_vuart_enable_interrupt_rx(struct ps3_system_bus_device *dev)
{
- return (dev->priv->interrupt_mask & INTERRUPT_MASK_RX) ? 0
- : ps3_vuart_set_interrupt_mask(dev, dev->priv->interrupt_mask
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+
+ return (priv->interrupt_mask & INTERRUPT_MASK_RX) ? 0
+ : ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask
| INTERRUPT_MASK_RX);
}
-int ps3_vuart_enable_interrupt_disconnect(struct ps3_vuart_port_device *dev)
+int ps3_vuart_enable_interrupt_disconnect(struct ps3_system_bus_device *dev)
{
- return (dev->priv->interrupt_mask & INTERRUPT_MASK_DISCONNECT) ? 0
- : ps3_vuart_set_interrupt_mask(dev, dev->priv->interrupt_mask
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+
+ return (priv->interrupt_mask & INTERRUPT_MASK_DISCONNECT) ? 0
+ : ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask
| INTERRUPT_MASK_DISCONNECT);
}
-int ps3_vuart_disable_interrupt_tx(struct ps3_vuart_port_device *dev)
+int ps3_vuart_disable_interrupt_tx(struct ps3_system_bus_device *dev)
{
- return (dev->priv->interrupt_mask & INTERRUPT_MASK_TX)
- ? ps3_vuart_set_interrupt_mask(dev, dev->priv->interrupt_mask
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+
+ return (priv->interrupt_mask & INTERRUPT_MASK_TX)
+ ? ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask
& ~INTERRUPT_MASK_TX) : 0;
}
-int ps3_vuart_disable_interrupt_rx(struct ps3_vuart_port_device *dev)
+int ps3_vuart_disable_interrupt_rx(struct ps3_system_bus_device *dev)
{
- return (dev->priv->interrupt_mask & INTERRUPT_MASK_RX)
- ? ps3_vuart_set_interrupt_mask(dev, dev->priv->interrupt_mask
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+
+ return (priv->interrupt_mask & INTERRUPT_MASK_RX)
+ ? ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask
& ~INTERRUPT_MASK_RX) : 0;
}
-int ps3_vuart_disable_interrupt_disconnect(struct ps3_vuart_port_device *dev)
+int ps3_vuart_disable_interrupt_disconnect(struct ps3_system_bus_device *dev)
{
- return (dev->priv->interrupt_mask & INTERRUPT_MASK_DISCONNECT)
- ? ps3_vuart_set_interrupt_mask(dev, dev->priv->interrupt_mask
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+
+ return (priv->interrupt_mask & INTERRUPT_MASK_DISCONNECT)
+ ? ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask
& ~INTERRUPT_MASK_DISCONNECT) : 0;
}
/**
* ps3_vuart_raw_write - Low level write helper.
+ * @dev: The struct ps3_system_bus_device instance.
*
* Do not call ps3_vuart_raw_write directly, use ps3_vuart_write.
*/
-static int ps3_vuart_raw_write(struct ps3_vuart_port_device *dev,
+static int ps3_vuart_raw_write(struct ps3_system_bus_device *dev,
const void* buf, unsigned int bytes, unsigned long *bytes_written)
{
int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
- result = lv1_write_virtual_uart(dev->priv->port_number,
+ result = lv1_write_virtual_uart(dev->port_number,
ps3_mm_phys_to_lpar(__pa(buf)), bytes, bytes_written);
if (result) {
return result;
}
- dev->priv->stats.bytes_written += *bytes_written;
+ priv->stats.bytes_written += *bytes_written;
dev_dbg(&dev->core, "%s:%d: wrote %lxh/%xh=>%lxh\n", __func__, __LINE__,
- *bytes_written, bytes, dev->priv->stats.bytes_written);
+ *bytes_written, bytes, priv->stats.bytes_written);
return result;
}
/**
* ps3_vuart_raw_read - Low level read helper.
+ * @dev: The struct ps3_system_bus_device instance.
*
* Do not call ps3_vuart_raw_read directly, use ps3_vuart_read.
*/
-static int ps3_vuart_raw_read(struct ps3_vuart_port_device *dev, void* buf,
+static int ps3_vuart_raw_read(struct ps3_system_bus_device *dev, void *buf,
unsigned int bytes, unsigned long *bytes_read)
{
int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
dev_dbg(&dev->core, "%s:%d: %xh\n", __func__, __LINE__, bytes);
- result = lv1_read_virtual_uart(dev->priv->port_number,
+ result = lv1_read_virtual_uart(dev->port_number,
ps3_mm_phys_to_lpar(__pa(buf)), bytes, bytes_read);
if (result) {
return result;
}
- dev->priv->stats.bytes_read += *bytes_read;
+ priv->stats.bytes_read += *bytes_read;
dev_dbg(&dev->core, "%s:%d: read %lxh/%xh=>%lxh\n", __func__, __LINE__,
- *bytes_read, bytes, dev->priv->stats.bytes_read);
+ *bytes_read, bytes, priv->stats.bytes_read);
return result;
}
/**
* ps3_vuart_clear_rx_bytes - Discard bytes received.
+ * @dev: The struct ps3_system_bus_device instance.
* @bytes: Max byte count to discard, zero = all pending.
*
* Used to clear pending rx interrupt source. Will not block.
*/
-void ps3_vuart_clear_rx_bytes(struct ps3_vuart_port_device *dev,
+void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
unsigned int bytes)
{
int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
u64 bytes_waiting;
void* tmp;
/* Don't include these bytes in the stats. */
- dev->priv->stats.bytes_read -= bytes_waiting;
+ priv->stats.bytes_read -= bytes_waiting;
}
+EXPORT_SYMBOL_GPL(ps3_vuart_clear_rx_bytes);
/**
* struct list_buffer - An element for a port device fifo buffer list.
/**
* ps3_vuart_write - the entry point for writing data to a port
+ * @dev: The struct ps3_system_bus_device instance.
*
* If the port is idle on entry as much of the incoming data is written to
* the port as the port will accept. Otherwise a list buffer is created
* then enqueued for transmision via the transmit interrupt.
*/
-int ps3_vuart_write(struct ps3_vuart_port_device *dev, const void* buf,
+int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
unsigned int bytes)
{
static unsigned long dbg_number;
int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
unsigned long flags;
struct list_buffer *lb;
dev_dbg(&dev->core, "%s:%d: %u(%xh) bytes\n", __func__, __LINE__,
bytes, bytes);
- spin_lock_irqsave(&dev->priv->tx_list.lock, flags);
+ spin_lock_irqsave(&priv->tx_list.lock, flags);
- if (list_empty(&dev->priv->tx_list.head)) {
+ if (list_empty(&priv->tx_list.head)) {
unsigned long bytes_written;
result = ps3_vuart_raw_write(dev, buf, bytes, &bytes_written);
- spin_unlock_irqrestore(&dev->priv->tx_list.lock, flags);
+ spin_unlock_irqrestore(&priv->tx_list.lock, flags);
if (result) {
dev_dbg(&dev->core,
bytes -= bytes_written;
buf += bytes_written;
} else
- spin_unlock_irqrestore(&dev->priv->tx_list.lock, flags);
+ spin_unlock_irqrestore(&priv->tx_list.lock, flags);
lb = kmalloc(sizeof(struct list_buffer) + bytes, GFP_KERNEL);
lb->tail = lb->data + bytes;
lb->dbg_number = ++dbg_number;
- spin_lock_irqsave(&dev->priv->tx_list.lock, flags);
- list_add_tail(&lb->link, &dev->priv->tx_list.head);
+ spin_lock_irqsave(&priv->tx_list.lock, flags);
+ list_add_tail(&lb->link, &priv->tx_list.head);
ps3_vuart_enable_interrupt_tx(dev);
- spin_unlock_irqrestore(&dev->priv->tx_list.lock, flags);
+ spin_unlock_irqrestore(&priv->tx_list.lock, flags);
dev_dbg(&dev->core, "%s:%d: queued buf_%lu, %xh bytes\n",
__func__, __LINE__, lb->dbg_number, bytes);
return 0;
}
+EXPORT_SYMBOL_GPL(ps3_vuart_write);
+
+/**
+ * ps3_vuart_queue_rx_bytes - Queue waiting bytes into the buffer list.
+ * @dev: The struct ps3_system_bus_device instance.
+ * @bytes_queued: Number of bytes queued to the buffer list.
+ *
+ * Must be called with priv->rx_list.lock held.
+ */
+
+static int ps3_vuart_queue_rx_bytes(struct ps3_system_bus_device *dev,
+ u64 *bytes_queued)
+{
+ static unsigned long dbg_number;
+ int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+ struct list_buffer *lb;
+ u64 bytes;
+
+ *bytes_queued = 0;
+
+ result = ps3_vuart_get_rx_bytes_waiting(dev, &bytes);
+ BUG_ON(result);
+
+ if (result)
+ return -EIO;
+
+ if (!bytes)
+ return 0;
+
+ /* Add some extra space for recently arrived data. */
+
+ bytes += 128;
+
+ lb = kmalloc(sizeof(struct list_buffer) + bytes, GFP_ATOMIC);
+
+ if (!lb)
+ return -ENOMEM;
+
+ ps3_vuart_raw_read(dev, lb->data, bytes, &bytes);
+
+ lb->head = lb->data;
+ lb->tail = lb->data + bytes;
+ lb->dbg_number = ++dbg_number;
+
+ list_add_tail(&lb->link, &priv->rx_list.head);
+ priv->rx_list.bytes_held += bytes;
+
+ dev_dbg(&dev->core, "%s:%d: buf_%lu: queued %lxh bytes\n",
+ __func__, __LINE__, lb->dbg_number, bytes);
+
+ *bytes_queued = bytes;
+
+ return 0;
+}
/**
- * ps3_vuart_read - the entry point for reading data from a port
+ * ps3_vuart_read - The entry point for reading data from a port.
*
- * If enough bytes to satisfy the request are held in the buffer list those
- * bytes are dequeued and copied to the caller's buffer. Emptied list buffers
- * are retiered. If the request cannot be statified by bytes held in the list
- * buffers -EAGAIN is returned.
+ * Queue data waiting at the port, and if enough bytes to satisfy the request
+ * are held in the buffer list those bytes are dequeued and copied to the
+ * caller's buffer. Emptied list buffers are retiered. If the request cannot
+ * be statified by bytes held in the list buffers -EAGAIN is returned.
*/
-int ps3_vuart_read(struct ps3_vuart_port_device *dev, void* buf,
+int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
unsigned int bytes)
{
+ int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
unsigned long flags;
struct list_buffer *lb, *n;
unsigned long bytes_read;
dev_dbg(&dev->core, "%s:%d: %u(%xh) bytes\n", __func__, __LINE__,
bytes, bytes);
- spin_lock_irqsave(&dev->priv->rx_list.lock, flags);
+ spin_lock_irqsave(&priv->rx_list.lock, flags);
- if (dev->priv->rx_list.bytes_held < bytes) {
- spin_unlock_irqrestore(&dev->priv->rx_list.lock, flags);
- dev_dbg(&dev->core, "%s:%d: starved for %lxh bytes\n",
- __func__, __LINE__,
- bytes - dev->priv->rx_list.bytes_held);
- return -EAGAIN;
+ /* Queue rx bytes here for polled reads. */
+
+ while (priv->rx_list.bytes_held < bytes) {
+ u64 tmp;
+
+ result = ps3_vuart_queue_rx_bytes(dev, &tmp);
+ if (result || !tmp) {
+ dev_dbg(&dev->core, "%s:%d: starved for %lxh bytes\n",
+ __func__, __LINE__,
+ bytes - priv->rx_list.bytes_held);
+ spin_unlock_irqrestore(&priv->rx_list.lock, flags);
+ return -EAGAIN;
+ }
}
- list_for_each_entry_safe(lb, n, &dev->priv->rx_list.head, link) {
+ list_for_each_entry_safe(lb, n, &priv->rx_list.head, link) {
bytes_read = min((unsigned int)(lb->tail - lb->head), bytes);
memcpy(buf, lb->head, bytes_read);
buf += bytes_read;
bytes -= bytes_read;
- dev->priv->rx_list.bytes_held -= bytes_read;
+ priv->rx_list.bytes_held -= bytes_read;
if (bytes_read < lb->tail - lb->head) {
lb->head += bytes_read;
dev_dbg(&dev->core, "%s:%d: buf_%lu: dequeued %lxh "
"bytes\n", __func__, __LINE__, lb->dbg_number,
bytes_read);
- spin_unlock_irqrestore(&dev->priv->rx_list.lock, flags);
+ spin_unlock_irqrestore(&priv->rx_list.lock, flags);
return 0;
}
kfree(lb);
}
- spin_unlock_irqrestore(&dev->priv->rx_list.lock, flags);
+ spin_unlock_irqrestore(&priv->rx_list.lock, flags);
return 0;
}
+EXPORT_SYMBOL_GPL(ps3_vuart_read);
-int ps3_vuart_read_async(struct ps3_vuart_port_device *dev, work_func_t func,
- unsigned int bytes)
+/**
+ * ps3_vuart_work - Asynchronous read handler.
+ */
+
+static void ps3_vuart_work(struct work_struct *work)
+{
+ struct ps3_system_bus_device *dev =
+ ps3_vuart_work_to_system_bus_dev(work);
+ struct ps3_vuart_port_driver *drv =
+ ps3_system_bus_dev_to_vuart_drv(dev);
+
+ BUG_ON(!drv);
+ drv->work(dev);
+}
+
+int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes)
{
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
unsigned long flags;
- if(dev->priv->work.trigger) {
+ if (priv->rx_list.work.trigger) {
dev_dbg(&dev->core, "%s:%d: warning, multiple calls\n",
__func__, __LINE__);
return -EAGAIN;
BUG_ON(!bytes);
- PREPARE_WORK(&dev->priv->work.work, func);
+ PREPARE_WORK(&priv->rx_list.work.work, ps3_vuart_work);
- spin_lock_irqsave(&dev->priv->work.lock, flags);
- if(dev->priv->rx_list.bytes_held >= bytes) {
+ spin_lock_irqsave(&priv->rx_list.lock, flags);
+ if (priv->rx_list.bytes_held >= bytes) {
dev_dbg(&dev->core, "%s:%d: schedule_work %xh bytes\n",
__func__, __LINE__, bytes);
- schedule_work(&dev->priv->work.work);
- spin_unlock_irqrestore(&dev->priv->work.lock, flags);
+ schedule_work(&priv->rx_list.work.work);
+ spin_unlock_irqrestore(&priv->rx_list.lock, flags);
return 0;
}
- dev->priv->work.trigger = bytes;
- spin_unlock_irqrestore(&dev->priv->work.lock, flags);
+ priv->rx_list.work.trigger = bytes;
+ spin_unlock_irqrestore(&priv->rx_list.lock, flags);
dev_dbg(&dev->core, "%s:%d: waiting for %u(%xh) bytes\n", __func__,
__LINE__, bytes, bytes);
return 0;
}
+EXPORT_SYMBOL_GPL(ps3_vuart_read_async);
-void ps3_vuart_cancel_async(struct ps3_vuart_port_device *dev)
+void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev)
{
- dev->priv->work.trigger = 0;
+ to_port_priv(dev)->rx_list.work.trigger = 0;
}
+EXPORT_SYMBOL_GPL(ps3_vuart_cancel_async);
/**
* ps3_vuart_handle_interrupt_tx - third stage transmit interrupt handler
* adjusts the final list buffer state for a partial write.
*/
-static int ps3_vuart_handle_interrupt_tx(struct ps3_vuart_port_device *dev)
+static int ps3_vuart_handle_interrupt_tx(struct ps3_system_bus_device *dev)
{
int result = 0;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
unsigned long flags;
struct list_buffer *lb, *n;
unsigned long bytes_total = 0;
dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
- spin_lock_irqsave(&dev->priv->tx_list.lock, flags);
+ spin_lock_irqsave(&priv->tx_list.lock, flags);
- list_for_each_entry_safe(lb, n, &dev->priv->tx_list.head, link) {
+ list_for_each_entry_safe(lb, n, &priv->tx_list.head, link) {
unsigned long bytes_written;
ps3_vuart_disable_interrupt_tx(dev);
port_full:
- spin_unlock_irqrestore(&dev->priv->tx_list.lock, flags);
+ spin_unlock_irqrestore(&priv->tx_list.lock, flags);
dev_dbg(&dev->core, "%s:%d wrote %lxh bytes total\n",
__func__, __LINE__, bytes_total);
return result;
* buffer list. Buffer list data is dequeued via ps3_vuart_read.
*/
-static int ps3_vuart_handle_interrupt_rx(struct ps3_vuart_port_device *dev)
+static int ps3_vuart_handle_interrupt_rx(struct ps3_system_bus_device *dev)
{
- static unsigned long dbg_number;
- int result = 0;
+ int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
unsigned long flags;
- struct list_buffer *lb;
- unsigned long bytes;
+ u64 bytes;
dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
- result = ps3_vuart_get_rx_bytes_waiting(dev, &bytes);
-
- if (result)
- return -EIO;
-
- BUG_ON(!bytes);
-
- /* Add some extra space for recently arrived data. */
-
- bytes += 128;
-
- lb = kmalloc(sizeof(struct list_buffer) + bytes, GFP_ATOMIC);
+ spin_lock_irqsave(&priv->rx_list.lock, flags);
+ result = ps3_vuart_queue_rx_bytes(dev, &bytes);
- if (!lb)
- return -ENOMEM;
-
- ps3_vuart_raw_read(dev, lb->data, bytes, &bytes);
-
- lb->head = lb->data;
- lb->tail = lb->data + bytes;
- lb->dbg_number = ++dbg_number;
-
- spin_lock_irqsave(&dev->priv->rx_list.lock, flags);
- list_add_tail(&lb->link, &dev->priv->rx_list.head);
- dev->priv->rx_list.bytes_held += bytes;
- spin_unlock_irqrestore(&dev->priv->rx_list.lock, flags);
-
- dev_dbg(&dev->core, "%s:%d: buf_%lu: queued %lxh bytes\n",
- __func__, __LINE__, lb->dbg_number, bytes);
+ if (result) {
+ spin_unlock_irqrestore(&priv->rx_list.lock, flags);
+ return result;
+ }
- spin_lock_irqsave(&dev->priv->work.lock, flags);
- if(dev->priv->work.trigger
- && dev->priv->rx_list.bytes_held >= dev->priv->work.trigger) {
+ if (priv->rx_list.work.trigger && priv->rx_list.bytes_held
+ >= priv->rx_list.work.trigger) {
dev_dbg(&dev->core, "%s:%d: schedule_work %lxh bytes\n",
- __func__, __LINE__, dev->priv->work.trigger);
- dev->priv->work.trigger = 0;
- schedule_work(&dev->priv->work.work);
+ __func__, __LINE__, priv->rx_list.work.trigger);
+ priv->rx_list.work.trigger = 0;
+ schedule_work(&priv->rx_list.work.work);
}
- spin_unlock_irqrestore(&dev->priv->work.lock, flags);
- return 0;
+
+ spin_unlock_irqrestore(&priv->rx_list.lock, flags);
+ return result;
}
static int ps3_vuart_handle_interrupt_disconnect(
- struct ps3_vuart_port_device *dev)
+ struct ps3_system_bus_device *dev)
{
dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
BUG_ON("no support");
* stage handler after one iteration.
*/
-static int ps3_vuart_handle_port_interrupt(struct ps3_vuart_port_device *dev)
+static int ps3_vuart_handle_port_interrupt(struct ps3_system_bus_device *dev)
{
int result;
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
unsigned long status;
result = ps3_vuart_get_interrupt_status(dev, &status);
status);
if (status & INTERRUPT_MASK_DISCONNECT) {
- dev->priv->stats.disconnect_interrupts++;
+ priv->stats.disconnect_interrupts++;
result = ps3_vuart_handle_interrupt_disconnect(dev);
if (result)
ps3_vuart_disable_interrupt_disconnect(dev);
}
if (status & INTERRUPT_MASK_TX) {
- dev->priv->stats.tx_interrupts++;
+ priv->stats.tx_interrupts++;
result = ps3_vuart_handle_interrupt_tx(dev);
if (result)
ps3_vuart_disable_interrupt_tx(dev);
}
if (status & INTERRUPT_MASK_RX) {
- dev->priv->stats.rx_interrupts++;
+ priv->stats.rx_interrupts++;
result = ps3_vuart_handle_interrupt_rx(dev);
if (result)
ps3_vuart_disable_interrupt_rx(dev);
}
struct vuart_bus_priv {
- const struct ports_bmp bmp;
+ struct ports_bmp *bmp;
unsigned int virq;
struct semaphore probe_mutex;
int use_count;
- struct ps3_vuart_port_device *devices[PORT_COUNT];
+ struct ps3_system_bus_device *devices[PORT_COUNT];
} static vuart_bus_priv;
/**
static irqreturn_t ps3_vuart_irq_handler(int irq, void *_private)
{
- struct vuart_bus_priv *bus_priv;
+ struct vuart_bus_priv *bus_priv = _private;
- BUG_ON(!_private);
- bus_priv = (struct vuart_bus_priv *)_private;
+ BUG_ON(!bus_priv);
while (1) {
unsigned int port;
- dump_ports_bmp(&bus_priv->bmp);
+ dump_ports_bmp(bus_priv->bmp);
- port = (BITS_PER_LONG - 1) - __ilog2(bus_priv->bmp.status);
+ port = (BITS_PER_LONG - 1) - __ilog2(bus_priv->bmp->status);
if (port == BITS_PER_LONG)
break;
return IRQ_HANDLED;
}
-static int ps3_vuart_match(struct device *_dev, struct device_driver *_drv)
+static int ps3_vuart_bus_interrupt_get(void)
{
int result;
- struct ps3_vuart_port_driver *drv = to_ps3_vuart_port_driver(_drv);
- struct ps3_vuart_port_device *dev = to_ps3_vuart_port_device(_dev);
- result = dev->match_id == drv->match_id;
+ pr_debug(" -> %s:%d\n", __func__, __LINE__);
+
+ vuart_bus_priv.use_count++;
+
+ BUG_ON(vuart_bus_priv.use_count > 2);
+
+ if (vuart_bus_priv.use_count != 1) {
+ return 0;
+ }
+
+ BUG_ON(vuart_bus_priv.bmp);
+
+ vuart_bus_priv.bmp = kzalloc(sizeof(struct ports_bmp), GFP_KERNEL);
+
+ if (!vuart_bus_priv.bmp) {
+ pr_debug("%s:%d: kzalloc failed.\n", __func__, __LINE__);
+ result = -ENOMEM;
+ goto fail_bmp_malloc;
+ }
+
+ result = ps3_vuart_irq_setup(PS3_BINDING_CPU_ANY, vuart_bus_priv.bmp,
+ &vuart_bus_priv.virq);
+
+ if (result) {
+ pr_debug("%s:%d: ps3_vuart_irq_setup failed (%d)\n",
+ __func__, __LINE__, result);
+ result = -EPERM;
+ goto fail_alloc_irq;
+ }
+
+ result = request_irq(vuart_bus_priv.virq, ps3_vuart_irq_handler,
+ IRQF_DISABLED, "vuart", &vuart_bus_priv);
- dev_info(&dev->core, "%s:%d: dev=%u(%s), drv=%u(%s): %s\n", __func__,
- __LINE__, dev->match_id, dev->core.bus_id, drv->match_id,
- drv->core.name, (result ? "match" : "miss"));
+ if (result) {
+ pr_debug("%s:%d: request_irq failed (%d)\n",
+ __func__, __LINE__, result);
+ goto fail_request_irq;
+ }
+ pr_debug(" <- %s:%d: ok\n", __func__, __LINE__);
return result;
+
+fail_request_irq:
+ ps3_vuart_irq_destroy(vuart_bus_priv.virq);
+ vuart_bus_priv.virq = NO_IRQ;
+fail_alloc_irq:
+ kfree(vuart_bus_priv.bmp);
+ vuart_bus_priv.bmp = NULL;
+fail_bmp_malloc:
+ vuart_bus_priv.use_count--;
+ pr_debug(" <- %s:%d: failed\n", __func__, __LINE__);
+ return result;
+}
+
+static int ps3_vuart_bus_interrupt_put(void)
+{
+ pr_debug(" -> %s:%d\n", __func__, __LINE__);
+
+ vuart_bus_priv.use_count--;
+
+ BUG_ON(vuart_bus_priv.use_count < 0);
+
+ if (vuart_bus_priv.use_count != 0)
+ return 0;
+
+ free_irq(vuart_bus_priv.virq, &vuart_bus_priv);
+
+ ps3_vuart_irq_destroy(vuart_bus_priv.virq);
+ vuart_bus_priv.virq = NO_IRQ;
+
+ kfree(vuart_bus_priv.bmp);
+ vuart_bus_priv.bmp = NULL;
+
+ pr_debug(" <- %s:%d\n", __func__, __LINE__);
+ return 0;
}
-static int ps3_vuart_probe(struct device *_dev)
+static int ps3_vuart_probe(struct ps3_system_bus_device *dev)
{
int result;
- unsigned int port_number;
- struct ps3_vuart_port_device *dev = to_ps3_vuart_port_device(_dev);
- struct ps3_vuart_port_driver *drv =
- to_ps3_vuart_port_driver(_dev->driver);
+ struct ps3_vuart_port_driver *drv;
+ struct ps3_vuart_port_priv *priv = NULL;
dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+ drv = ps3_system_bus_dev_to_vuart_drv(dev);
+
+ dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__,
+ drv->core.core.name);
+
BUG_ON(!drv);
- down(&vuart_bus_priv.probe_mutex);
+ if (dev->port_number >= PORT_COUNT) {
+ BUG();
+ return -EINVAL;
+ }
- /* Setup vuart_bus_priv.devices[]. */
+ down(&vuart_bus_priv.probe_mutex);
- result = ps3_vuart_match_id_to_port(dev->match_id,
- &port_number);
+ result = ps3_vuart_bus_interrupt_get();
- if (result) {
- dev_dbg(&dev->core, "%s:%d: unknown match_id (%d)\n",
- __func__, __LINE__, dev->match_id);
- result = -EINVAL;
- goto fail_match;
- }
+ if (result)
+ goto fail_setup_interrupt;
- if (vuart_bus_priv.devices[port_number]) {
+ if (vuart_bus_priv.devices[dev->port_number]) {
dev_dbg(&dev->core, "%s:%d: port busy (%d)\n", __func__,
- __LINE__, port_number);
+ __LINE__, dev->port_number);
result = -EBUSY;
- goto fail_match;
+ goto fail_busy;
}
- vuart_bus_priv.devices[port_number] = dev;
+ vuart_bus_priv.devices[dev->port_number] = dev;
- /* Setup dev->priv. */
+ /* Setup dev->driver_priv. */
- dev->priv = kzalloc(sizeof(struct ps3_vuart_port_priv), GFP_KERNEL);
+ dev->driver_priv = kzalloc(sizeof(struct ps3_vuart_port_priv),
+ GFP_KERNEL);
- if (!dev->priv) {
+ if (!dev->driver_priv) {
result = -ENOMEM;
- goto fail_alloc;
+ goto fail_dev_malloc;
}
- dev->priv->port_number = port_number;
-
- INIT_LIST_HEAD(&dev->priv->tx_list.head);
- spin_lock_init(&dev->priv->tx_list.lock);
+ priv = to_port_priv(dev);
- INIT_LIST_HEAD(&dev->priv->rx_list.head);
- spin_lock_init(&dev->priv->rx_list.lock);
+ INIT_LIST_HEAD(&priv->tx_list.head);
+ spin_lock_init(&priv->tx_list.lock);
- INIT_WORK(&dev->priv->work.work, NULL);
- spin_lock_init(&dev->priv->work.lock);
- dev->priv->work.trigger = 0;
- dev->priv->work.dev = dev;
+ INIT_LIST_HEAD(&priv->rx_list.head);
+ spin_lock_init(&priv->rx_list.lock);
- if (++vuart_bus_priv.use_count == 1) {
-
- result = ps3_vuart_irq_setup(PS3_BINDING_CPU_ANY,
- (void*)&vuart_bus_priv.bmp.status, &vuart_bus_priv.virq);
-
- if (result) {
- dev_dbg(&dev->core,
- "%s:%d: ps3_vuart_irq_setup failed (%d)\n",
- __func__, __LINE__, result);
- result = -EPERM;
- goto fail_alloc_irq;
- }
-
- result = request_irq(vuart_bus_priv.virq, ps3_vuart_irq_handler,
- IRQF_DISABLED, "vuart", &vuart_bus_priv);
-
- if (result) {
- dev_info(&dev->core, "%s:%d: request_irq failed (%d)\n",
- __func__, __LINE__, result);
- goto fail_request_irq;
- }
- }
+ INIT_WORK(&priv->rx_list.work.work, NULL);
+ priv->rx_list.work.trigger = 0;
+ priv->rx_list.work.dev = dev;
/* clear stale pending interrupts */
fail_probe:
ps3_vuart_set_interrupt_mask(dev, 0);
-fail_request_irq:
- ps3_vuart_irq_destroy(vuart_bus_priv.virq);
- vuart_bus_priv.virq = NO_IRQ;
-fail_alloc_irq:
- --vuart_bus_priv.use_count;
- kfree(dev->priv);
- dev->priv = NULL;
-fail_alloc:
- vuart_bus_priv.devices[port_number] = NULL;
-fail_match:
+ kfree(dev->driver_priv);
+ dev->driver_priv = NULL;
+fail_dev_malloc:
+ vuart_bus_priv.devices[dev->port_number] = NULL;
+fail_busy:
+ ps3_vuart_bus_interrupt_put();
+fail_setup_interrupt:
up(&vuart_bus_priv.probe_mutex);
- dev_dbg(&dev->core, "%s:%d failed\n", __func__, __LINE__);
+ dev_dbg(&dev->core, "%s:%d: failed\n", __func__, __LINE__);
return result;
}
-static int ps3_vuart_remove(struct device *_dev)
+/**
+ * ps3_vuart_cleanup - common cleanup helper.
+ * @dev: The struct ps3_system_bus_device instance.
+ *
+ * Cleans interrupts and HV resources. Must be called with
+ * vuart_bus_priv.probe_mutex held. Used by ps3_vuart_remove and
+ * ps3_vuart_shutdown. After this call, polled reading will still work.
+ */
+
+static int ps3_vuart_cleanup(struct ps3_system_bus_device *dev)
{
- struct ps3_vuart_port_device *dev = to_ps3_vuart_port_device(_dev);
- struct ps3_vuart_port_driver *drv =
- to_ps3_vuart_port_driver(_dev->driver);
+ dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+
+ ps3_vuart_cancel_async(dev);
+ ps3_vuart_set_interrupt_mask(dev, 0);
+ ps3_vuart_bus_interrupt_put();
+ return 0;
+}
+
+/**
+ * ps3_vuart_remove - Completely clean the device instance.
+ * @dev: The struct ps3_system_bus_device instance.
+ *
+ * Cleans all memory, interrupts and HV resources. After this call the
+ * device can no longer be used.
+ */
+
+static int ps3_vuart_remove(struct ps3_system_bus_device *dev)
+{
+ struct ps3_vuart_port_priv *priv = to_port_priv(dev);
+ struct ps3_vuart_port_driver *drv;
+
+ BUG_ON(!dev);
down(&vuart_bus_priv.probe_mutex);
- dev_dbg(&dev->core, "%s:%d: %s\n", __func__, __LINE__,
- dev->core.bus_id);
+ dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__,
+ dev->match_id);
- BUG_ON(vuart_bus_priv.use_count < 1);
+ if (!dev->core.driver) {
+ dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__,
+ __LINE__);
+ up(&vuart_bus_priv.probe_mutex);
+ return 0;
+ }
- if (drv->remove)
- drv->remove(dev);
- else
- dev_dbg(&dev->core, "%s:%d: %s no remove method\n", __func__,
- __LINE__, dev->core.bus_id);
+ drv = ps3_system_bus_dev_to_vuart_drv(dev);
- vuart_bus_priv.devices[dev->priv->port_number] = NULL;
+ BUG_ON(!drv);
- if (--vuart_bus_priv.use_count == 0) {
+ if (drv->remove) {
+ drv->remove(dev);
+ } else {
+ dev_dbg(&dev->core, "%s:%d: no remove method\n", __func__,
+ __LINE__);
BUG();
- free_irq(vuart_bus_priv.virq, &vuart_bus_priv);
- ps3_vuart_irq_destroy(vuart_bus_priv.virq);
- vuart_bus_priv.virq = NO_IRQ;
}
- kfree(dev->priv);
- dev->priv = NULL;
+ ps3_vuart_cleanup(dev);
+
+ vuart_bus_priv.devices[dev->port_number] = NULL;
+ kfree(priv);
+ priv = NULL;
+ dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
up(&vuart_bus_priv.probe_mutex);
return 0;
}
-static void ps3_vuart_shutdown(struct device *_dev)
-{
- struct ps3_vuart_port_device *dev = to_ps3_vuart_port_device(_dev);
- struct ps3_vuart_port_driver *drv =
- to_ps3_vuart_port_driver(_dev->driver);
-
- dev_dbg(&dev->core, "%s:%d: %s\n", __func__, __LINE__,
- dev->core.bus_id);
-
- if (drv->shutdown)
- drv->shutdown(dev);
- else
- dev_dbg(&dev->core, "%s:%d: %s no shutdown method\n", __func__,
- __LINE__, dev->core.bus_id);
-}
-
/**
- * ps3_vuart_bus - The vuart bus instance.
+ * ps3_vuart_shutdown - Cleans interrupts and HV resources.
+ * @dev: The struct ps3_system_bus_device instance.
*
- * The vuart is managed as a bus that port devices connect to.
+ * Cleans interrupts and HV resources. After this call the
+ * device can still be used in polling mode. This behavior required
+ * by sys-manager to be able to complete the device power operation
+ * sequence.
*/
-struct bus_type ps3_vuart_bus = {
- .name = "ps3_vuart",
- .match = ps3_vuart_match,
- .probe = ps3_vuart_probe,
- .remove = ps3_vuart_remove,
- .shutdown = ps3_vuart_shutdown,
-};
-
-int __init ps3_vuart_bus_init(void)
+static int ps3_vuart_shutdown(struct ps3_system_bus_device *dev)
{
- int result;
+ struct ps3_vuart_port_driver *drv;
- pr_debug("%s:%d:\n", __func__, __LINE__);
+ BUG_ON(!dev);
- if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
- return -ENODEV;
+ down(&vuart_bus_priv.probe_mutex);
- init_MUTEX(&vuart_bus_priv.probe_mutex);
- result = bus_register(&ps3_vuart_bus);
- BUG_ON(result);
+ dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__,
+ dev->match_id);
- return result;
-}
+ if (!dev->core.driver) {
+ dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__,
+ __LINE__);
+ up(&vuart_bus_priv.probe_mutex);
+ return 0;
+ }
-void __exit ps3_vuart_bus_exit(void)
-{
- pr_debug("%s:%d:\n", __func__, __LINE__);
- bus_unregister(&ps3_vuart_bus);
-}
+ drv = ps3_system_bus_dev_to_vuart_drv(dev);
-core_initcall(ps3_vuart_bus_init);
-module_exit(ps3_vuart_bus_exit);
+ BUG_ON(!drv);
-/**
- * ps3_vuart_port_release_device - Remove a vuart port device.
- */
+ if (drv->shutdown)
+ drv->shutdown(dev);
+ else if (drv->remove) {
+ dev_dbg(&dev->core, "%s:%d: no shutdown, calling remove\n",
+ __func__, __LINE__);
+ drv->remove(dev);
+ } else {
+ dev_dbg(&dev->core, "%s:%d: no shutdown method\n", __func__,
+ __LINE__);
+ BUG();
+ }
-static void ps3_vuart_port_release_device(struct device *_dev)
-{
-#if defined(DEBUG)
- struct ps3_vuart_port_device *dev = to_ps3_vuart_port_device(_dev);
+ ps3_vuart_cleanup(dev);
- dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+ dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
- BUG_ON(dev->priv && "forgot to free");
- memset(&dev->core, 0, sizeof(dev->core));
-#endif
+ up(&vuart_bus_priv.probe_mutex);
+ return 0;
}
-/**
- * ps3_vuart_port_device_register - Add a vuart port device.
- */
-
-int ps3_vuart_port_device_register(struct ps3_vuart_port_device *dev)
+static int __init ps3_vuart_bus_init(void)
{
- static unsigned int dev_count = 1;
-
- BUG_ON(dev->priv && "forgot to free");
+ pr_debug("%s:%d:\n", __func__, __LINE__);
- dev->core.parent = NULL;
- dev->core.bus = &ps3_vuart_bus;
- dev->core.release = ps3_vuart_port_release_device;
+ if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+ return -ENODEV;
- snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), "vuart_%02x",
- dev_count++);
+ init_MUTEX(&vuart_bus_priv.probe_mutex);
- dev_dbg(&dev->core, "%s:%d register\n", __func__, __LINE__);
+ return 0;
+}
- return device_register(&dev->core);
+static void __exit ps3_vuart_bus_exit(void)
+{
+ pr_debug("%s:%d:\n", __func__, __LINE__);
}
-EXPORT_SYMBOL_GPL(ps3_vuart_port_device_register);
+core_initcall(ps3_vuart_bus_init);
+module_exit(ps3_vuart_bus_exit);
/**
* ps3_vuart_port_driver_register - Add a vuart port device driver.
{
int result;
- pr_debug("%s:%d: (%s)\n", __func__, __LINE__, drv->core.name);
- drv->core.bus = &ps3_vuart_bus;
- result = driver_register(&drv->core);
+ pr_debug("%s:%d: (%s)\n", __func__, __LINE__, drv->core.core.name);
+
+ BUG_ON(!drv->core.match_id);
+ BUG_ON(!drv->core.core.name);
+
+ drv->core.probe = ps3_vuart_probe;
+ drv->core.remove = ps3_vuart_remove;
+ drv->core.shutdown = ps3_vuart_shutdown;
+
+ result = ps3_system_bus_driver_register(&drv->core);
return result;
}
-
EXPORT_SYMBOL_GPL(ps3_vuart_port_driver_register);
/**
void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv)
{
- pr_debug("%s:%d: (%s)\n", __func__, __LINE__, drv->core.name);
- driver_unregister(&drv->core);
+ pr_debug("%s:%d: (%s)\n", __func__, __LINE__, drv->core.core.name);
+ ps3_system_bus_driver_unregister(&drv->core);
}
-
EXPORT_SYMBOL_GPL(ps3_vuart_port_driver_unregister);
git.openpandora.org / pandora-kernel.git / commitdiff