diff options
| author | Linas Vepstas <linas@austin.ibm.com> | 2006-10-10 16:21:10 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-10-11 04:04:27 -0400 |
| commit | 348bc2a6e306dc3e875cee3389e1405963ace617 (patch) | |
| tree | e0801413480b419d9a7143b05f1f90f83f14477f /drivers/net | |
| parent | 66c097165cf6d4196e798145fb33c768164fb361 (diff) | |
| download | linux-348bc2a6e306dc3e875cee3389e1405963ace617.tar.bz2 | |
[PATCH] powerpc/cell spidernet DMA direction fix
The ring buffer descriptors are DMA-accessed bidirectionally,
but are not declared in this way. Fix this.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: James K Lewis <jklewis@us.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/spider_net.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c index 88e7e41adec1..a26dd1c63189 100644 --- a/drivers/net/spider_net.c +++ b/drivers/net/spider_net.c @@ -301,7 +301,7 @@ static int spider_net_init_chain(struct spider_net_card *card, struct spider_net_descr_chain *chain, struct spider_net_descr *start_descr, - int direction, int no) + int no) { int i; struct spider_net_descr *descr; @@ -316,7 +316,7 @@ spider_net_init_chain(struct spider_net_card *card, buf = pci_map_single(card->pdev, descr, SPIDER_NET_DESCR_SIZE, - direction); + PCI_DMA_BIDIRECTIONAL); if (pci_dma_mapping_error(buf)) goto iommu_error; @@ -330,11 +330,6 @@ spider_net_init_chain(struct spider_net_card *card, (descr-1)->next = start_descr; start_descr->prev = descr-1; - descr = start_descr; - if (direction == PCI_DMA_FROMDEVICE) - for (i=0; i < no; i++, descr++) - descr->next_descr_addr = descr->next->bus_addr; - spin_lock_init(&chain->lock); chain->head = start_descr; chain->tail = start_descr; @@ -347,7 +342,7 @@ iommu_error: if (descr->bus_addr) pci_unmap_single(card->pdev, descr->bus_addr, SPIDER_NET_DESCR_SIZE, - direction); + PCI_DMA_BIDIRECTIONAL); return -ENOMEM; } @@ -368,7 +363,7 @@ spider_net_free_rx_chain_contents(struct spider_net_card *card) dev_kfree_skb(descr->skb); pci_unmap_single(card->pdev, descr->buf_addr, SPIDER_NET_MAX_FRAME, - PCI_DMA_FROMDEVICE); + PCI_DMA_BIDIRECTIONAL); } descr = descr->next; } @@ -1662,21 +1657,26 @@ int spider_net_open(struct net_device *netdev) { struct spider_net_card *card = netdev_priv(netdev); - int result; + struct spider_net_descr *descr; + int i, result; result = -ENOMEM; if (spider_net_init_chain(card, &card->tx_chain, card->descr, - PCI_DMA_TODEVICE, card->num_tx_desc)) + card->num_tx_desc)) goto alloc_tx_failed; card->low_watermark = NULL; /* rx_chain is after tx_chain, so offset is descr + tx_count */ if (spider_net_init_chain(card, &card->rx_chain, - card->descr + card->num_tx_desc, - PCI_DMA_FROMDEVICE, card->num_rx_desc)) + card->descr + card->num_tx_desc, + card->num_rx_desc)) goto alloc_rx_failed; + descr = card->rx_chain.head; + for (i=0; i < card->num_rx_desc; i++, descr++) + descr->next_descr_addr = descr->next->bus_addr; + /* allocate rx skbs */ if (spider_net_alloc_rx_skbs(card)) goto alloc_skbs_failed; |