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rapidio/tsi721: add query_mport callback 

Add device-specific implementation of query_mport callback function.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine 2016-03-22 14:26:02 -07:00 committed by Linus Torvalds
parent 8b189fdbc5
commit dbe74afe6a
1 changed files with 34 additions and 0 deletions
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34
drivers/rapidio/devices/tsi721.c
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@ -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) {