#include <plat/mailbox.h>
-static int enable_seq_bit;
-module_param(enable_seq_bit, bool, 0);
-MODULE_PARM_DESC(enable_seq_bit, "Enable sequence bit checking.");
-
static struct omap_mbox *mboxes;
static DEFINE_RWLOCK(mboxes_lock);
-/*
- * Mailbox sequence bit API
- */
-
-/* seq_rcv should be initialized with any value other than
- * 0 and 1 << 31, to allow either value for the first
- * message. */
-static inline void mbox_seq_init(struct omap_mbox *mbox)
-{
- if (!enable_seq_bit)
- return;
-
- /* any value other than 0 and 1 << 31 */
- mbox->seq_rcv = 0xffffffff;
-}
-
-static inline void mbox_seq_toggle(struct omap_mbox *mbox, mbox_msg_t * msg)
-{
- if (!enable_seq_bit)
- return;
-
- /* add seq_snd to msg */
- *msg = (*msg & 0x7fffffff) | mbox->seq_snd;
- /* flip seq_snd */
- mbox->seq_snd ^= 1 << 31;
-}
-
-static inline int mbox_seq_test(struct omap_mbox *mbox, mbox_msg_t msg)
-{
- mbox_msg_t seq;
-
- if (!enable_seq_bit)
- return 0;
-
- seq = msg & (1 << 31);
- if (seq == mbox->seq_rcv)
- return -1;
- mbox->seq_rcv = seq;
- return 0;
-}
-
/* Mailbox FIFO handle functions */
static inline mbox_msg_t mbox_fifo_read(struct omap_mbox *mbox)
{
return mbox->ops->is_irq(mbox, irq);
}
-/* Mailbox Sequence Bit function */
-void omap_mbox_init_seq(struct omap_mbox *mbox)
-{
- mbox_seq_init(mbox);
-}
-EXPORT_SYMBOL(omap_mbox_init_seq);
-
/*
* message sender
*/
goto out;
}
- mbox_seq_toggle(mbox, &msg);
mbox_fifo_write(mbox, msg);
out:
return ret;
/*
* Mailbox interrupt handler
*/
-static void mbox_txq_fn(struct request_queue * q)
+static void mbox_txq_fn(struct request_queue *q)
{
}
-static void mbox_rxq_fn(struct request_queue * q)
+static void mbox_rxq_fn(struct request_queue *q)
{
}
msg = mbox_fifo_read(mbox);
- if (unlikely(mbox_seq_test(mbox, msg))) {
- pr_info("mbox: Illegal seq bit!(%08x)\n", msg);
- if (mbox->err_notify)
- mbox->err_notify();
- }
blk_insert_request(q, rq, 0, (void *)msg);
if (mbox->ops->type == OMAP_MBOX_TYPE1)
*/
static ssize_t
omap_mbox_write(struct device *dev, struct device_attribute *attr,
- const char * buf, size_t count)
+ const char *buf, size_t count)
{
int ret;
mbox_msg_t *p = (mbox_msg_t *)buf;
blk_end_request_all(rq, 0);
- if (unlikely(mbox_seq_test(mbox, *p))) {
- pr_info("mbox: Illegal seq bit!(%08x) ignored\n", *p);
- continue;
- }
p++;
}
};
static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,
- request_fn_proc * proc,
+ request_fn_proc *proc,
void (*work) (struct work_struct *))
{
struct request_queue *q;