diff options
| author | Mugunthan V N <mugunthanvnm@ti.com> | 2013-02-11 09:52:18 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-12 16:15:09 -0500 |
| commit | f6e135c81eeb648c6addc6aeff2ee80f28ea413b (patch) | |
| tree | e8efd6732b75fab7cba75d8e68b4bf2fd31acb25 /drivers/net/ethernet/ti/davinci_cpdma.c | |
| parent | 570617e79c3ab31ce426efe9024af84efca862eb (diff) | |
| download | linux-f6e135c81eeb648c6addc6aeff2ee80f28ea413b.tar.bz2 | |
driver: net: ethernet: davinci_cpdma: add support for directed packet and source port detection
* Introduced parameter to add port number for directed packet in cpdma_chan_submit
* Source port detection macro with DMA descriptor status
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ti/davinci_cpdma.c')
| -rw-r--r-- | drivers/net/ethernet/ti/davinci_cpdma.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index f8629186afbe..198cf18dc7fc 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -60,6 +60,9 @@ #define CPDMA_DESC_EOQ BIT(28) #define CPDMA_DESC_TD_COMPLETE BIT(27) #define CPDMA_DESC_PASS_CRC BIT(26) +#define CPDMA_DESC_TO_PORT_EN BIT(20) +#define CPDMA_TO_PORT_SHIFT 16 +#define CPDMA_DESC_PORT_MASK (BIT(18) | BIT(17) | BIT(16)) #define CPDMA_TEARDOWN_VALUE 0xfffffffc @@ -132,6 +135,14 @@ struct cpdma_chan { #define chan_write(chan, fld, v) __raw_writel(v, (chan)->fld) #define desc_write(desc, fld, v) __raw_writel((u32)(v), &(desc)->fld) +#define cpdma_desc_to_port(chan, mode, directed) \ + do { \ + if (!is_rx_chan(chan) && ((directed == 1) || \ + (directed == 2))) \ + mode |= (CPDMA_DESC_TO_PORT_EN | \ + (directed << CPDMA_TO_PORT_SHIFT)); \ + } while (0) + /* * Utility constructs for a cpdma descriptor pool. Some devices (e.g. davinci * emac) have dedicated on-chip memory for these descriptors. Some other @@ -662,7 +673,7 @@ static void __cpdma_chan_submit(struct cpdma_chan *chan, } int cpdma_chan_submit(struct cpdma_chan *chan, void *token, void *data, - int len, gfp_t gfp_mask) + int len, int directed, gfp_t gfp_mask) { struct cpdma_ctlr *ctlr = chan->ctlr; struct cpdma_desc __iomem *desc; @@ -692,6 +703,7 @@ int cpdma_chan_submit(struct cpdma_chan *chan, void *token, void *data, buffer = dma_map_single(ctlr->dev, data, len, chan->dir); mode = CPDMA_DESC_OWNER | CPDMA_DESC_SOP | CPDMA_DESC_EOP; + cpdma_desc_to_port(chan, mode, directed); desc_write(desc, hw_next, 0); desc_write(desc, hw_buffer, buffer); @@ -782,7 +794,8 @@ static int __cpdma_chan_process(struct cpdma_chan *chan) status = -EBUSY; goto unlock_ret; } - status = status & (CPDMA_DESC_EOQ | CPDMA_DESC_TD_COMPLETE); + status = status & (CPDMA_DESC_EOQ | CPDMA_DESC_TD_COMPLETE | + CPDMA_DESC_PORT_MASK); chan->head = desc_from_phys(pool, desc_read(desc, hw_next)); chan_write(chan, cp, desc_dma); |