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| author | Divy Le Ray <divy@chelsio.com> | 2009-05-28 13:23:02 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-29 10:54:37 +0200 |
| commit | 10b6d95612672f89deb39b5a60fb677c78ba4844 (patch) | |
| tree | 5b853a9db086d4c0894d93f54e5bf666f0b8fa70 /drivers/net/cxgb3/sge.c | |
| parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/... (diff) | |
| download | linux-10b6d95612672f89deb39b5a60fb677c78ba4844.tar.xz linux-10b6d95612672f89deb39b5a60fb677c78ba4844.zip | |
cxgb3: fix dma mapping regression
Commit 5e68b772e6efd189d6aca76f6872fb75d51ace60
cxgb3: map entire Rx page, feed map+offset to Rx ring.
introduced a regression on platforms defining DECLARE_PCI_UNMAP_ADDR()
and related macros as no-ops.
Rx descriptors are fed with the a page buffer bus address + page chunk offset.
The page buffer bus address is set and retrieved through
pci_unamp_addr_set(), pci_unmap_addr().
These functions being meaningless on x86 (if CONFIG_DMA_API_DEBUG is not set).
The HW ends up with a bogus bus address.
This patch saves the page buffer bus address for all plaftorms.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/cxgb3/sge.c')
| -rw-r--r-- | drivers/net/cxgb3/sge.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index 26d3587f3399..b3ee2bc1a005 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -355,7 +355,7 @@ static void clear_rx_desc(struct pci_dev *pdev, const struct sge_fl *q, (*d->pg_chunk.p_cnt)--; if (!*d->pg_chunk.p_cnt) pci_unmap_page(pdev, - pci_unmap_addr(&d->pg_chunk, mapping), + d->pg_chunk.mapping, q->alloc_size, PCI_DMA_FROMDEVICE); put_page(d->pg_chunk.page); @@ -454,7 +454,7 @@ static int alloc_pg_chunk(struct adapter *adapter, struct sge_fl *q, q->pg_chunk.offset = 0; mapping = pci_map_page(adapter->pdev, q->pg_chunk.page, 0, q->alloc_size, PCI_DMA_FROMDEVICE); - pci_unmap_addr_set(&q->pg_chunk, mapping, mapping); + q->pg_chunk.mapping = mapping; } sd->pg_chunk = q->pg_chunk; @@ -511,8 +511,7 @@ static int refill_fl(struct adapter *adap, struct sge_fl *q, int n, gfp_t gfp) nomem: q->alloc_failed++; break; } - mapping = pci_unmap_addr(&sd->pg_chunk, mapping) + - sd->pg_chunk.offset; + mapping = sd->pg_chunk.mapping + sd->pg_chunk.offset; pci_unmap_addr_set(sd, dma_addr, mapping); add_one_rx_chunk(mapping, d, q->gen); @@ -881,7 +880,7 @@ recycle: (*sd->pg_chunk.p_cnt)--; if (!*sd->pg_chunk.p_cnt) pci_unmap_page(adap->pdev, - pci_unmap_addr(&sd->pg_chunk, mapping), + sd->pg_chunk.mapping, fl->alloc_size, PCI_DMA_FROMDEVICE); if (!skb) { @@ -2096,7 +2095,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, (*sd->pg_chunk.p_cnt)--; if (!*sd->pg_chunk.p_cnt) pci_unmap_page(adap->pdev, - pci_unmap_addr(&sd->pg_chunk, mapping), + sd->pg_chunk.mapping, fl->alloc_size, PCI_DMA_FROMDEVICE); |