author: Alexandre Bounine <alexandre.bounine@idt.com> 2016-03-22 14:26:02 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2016-03-22 15:36:02 -0700
commit: dbe74afe6a66d1606f5cb39f2ad05c39497542e6
parent: 8b189fdbc5f68f3f43e67004de25f75c1a5b4e51
Commit Summary:
Diffstat:
1 file changed, 32 insertions, 0 deletions
diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c
index d463d2cbd0af..cd40f0f9fbfe 100644
--- a/drivers/rapidio/devices/tsi721.c
+++ b/drivers/rapidio/devices/tsi721.c
@@ -2287,6 +2287,39 @@ static int tsi721_messages_init(struct tsi721_device *priv)
return 0;
}
+/**
+ * tsi721_query_mport - Fetch inbound message from the Tsi721 MSG Queue
+ * @mport: Master port implementing the Inbound Messaging Engine
+ * @mbox: Inbound mailbox number
+ *
+ * Returns pointer to the message on success or NULL on failure.
+ */
+static int tsi721_query_mport(struct rio_mport *mport,
+ struct rio_mport_attr *attr)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 rval;
+
+ rval = ioread32(priv->regs + (0x100 + RIO_PORT_N_ERR_STS_CSR(0)));
+ if (rval & RIO_PORT_N_ERR_STS_PORT_OK) {
+ rval = ioread32(priv->regs + (0x100 + RIO_PORT_N_CTL2_CSR(0)));
+ attr->link_speed = (rval & RIO_PORT_N_CTL2_SEL_BAUD) >> 28;
+ rval = ioread32(priv->regs + (0x100 + RIO_PORT_N_CTL_CSR(0)));
+ attr->link_width = (rval & RIO_PORT_N_CTL_IPW) >> 27;
+ } else
+ attr->link_speed = RIO_LINK_DOWN;
+
+#ifdef CONFIG_RAPIDIO_DMA_ENGINE
+ attr->flags = RIO_MPORT_DMA | RIO_MPORT_DMA_SG;
+ attr->dma_max_sge = 0;
+ attr->dma_max_size = TSI721_BDMA_MAX_BCOUNT;
+ attr->dma_align = 0;
+#else
+ attr->flags = 0;
+#endif
+ return 0;
+}
+
/**
* tsi721_disable_ints - disables all device interrupts
* @priv: pointer to tsi721 private data
@@ -2372,6 +2405,7 @@ static int tsi721_setup_mport(struct tsi721_device *priv)
ops->get_inb_message = tsi721_get_inb_message;
ops->map_inb = tsi721_rio_map_inb_mem;
ops->unmap_inb = tsi721_rio_unmap_inb_mem;
+ ops->query_mport = tsi721_query_mport;
mport = kzalloc(sizeof(struct rio_mport), GFP_KERNEL);
if (!mport) {