diff options
| 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 (patch) | |
| tree | 63449fc806071c2dc00dff8716365ec7e1a26031 /drivers/rapidio | |
| parent | rapidio: add query_mport operation (diff) | |
| download | linux-dev-dbe74afe6a66d1606f5cb39f2ad05c39497542e6.tar.xz linux-dev-dbe74afe6a66d1606f5cb39f2ad05c39497542e6.zip | |
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>
Diffstat (limited to 'drivers/rapidio')
| -rw-r--r-- | drivers/rapidio/devices/tsi721.c | 34 |
1 files changed, 34 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 @@ -2288,6 +2288,39 @@ static int tsi721_messages_init(struct tsi721_device *priv) } /** + * 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) { |