diff options
| author | Michael Brown <mcb30@ipxe.org> | 2020-11-25 15:52:00 +0000 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2020-11-25 16:15:55 +0000 |
| commit | cf12a41703a8b2292e5d2d7528c2733c37869681 (patch) | |
| tree | 72e60b6240cdd10816b7dce5fcc98822ae94e957 /src/drivers/net/intelxlvf.c | |
| parent | 24ef743778fb47958441d8891e5104135ac4c168 (diff) | |
| download | ipxe-cf12a41703a8b2292e5d2d7528c2733c37869681.tar.gz | |
[dma] Modify DMA API to simplify calculation of medial addresses
Redefine the value stored within a DMA mapping to be the offset
between physical addresses and DMA addresses within the mapped region.
Provide a dma() wrapper function to calculate the DMA address for any
pointer within a mapped region, thereby simplifying the use cases when
a device needs to be given addresses other than the region start
address.
On a platform using the "flat" DMA implementation the DMA offset for
any mapped region is always zero, with the result that dma_map() can
be optimised away completely and dma() reduces to a straightforward
call to virt_to_phys().
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/drivers/net/intelxlvf.c')
| -rw-r--r-- | src/drivers/net/intelxlvf.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/drivers/net/intelxlvf.c b/src/drivers/net/intelxlvf.c index 61ac5e5c0..f944b4daa 100644 --- a/src/drivers/net/intelxlvf.c +++ b/src/drivers/net/intelxlvf.c @@ -380,12 +380,14 @@ static int intelxlvf_admin_configure ( struct net_device *netdev ) { buf->cfg.count = cpu_to_le16 ( 1 ); buf->cfg.tx.vsi = cpu_to_le16 ( intelxl->vsi ); buf->cfg.tx.count = cpu_to_le16 ( INTELXL_TX_NUM_DESC ); - buf->cfg.tx.base = cpu_to_le64 ( intelxl->tx.ring.map.addr ); + buf->cfg.tx.base = cpu_to_le64 ( dma ( &intelxl->tx.ring.map, + intelxl->tx.ring.desc.raw ) ); buf->cfg.rx.vsi = cpu_to_le16 ( intelxl->vsi ); buf->cfg.rx.count = cpu_to_le32 ( INTELXL_RX_NUM_DESC ); buf->cfg.rx.len = cpu_to_le32 ( intelxl->mfs ); buf->cfg.rx.mfs = cpu_to_le32 ( intelxl->mfs ); - buf->cfg.rx.base = cpu_to_le64 ( intelxl->rx.ring.map.addr ); + buf->cfg.rx.base = cpu_to_le64 ( dma ( &intelxl->rx.ring.map, + intelxl->rx.ring.desc.raw ) ); /* Issue command */ if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 ) |