Commit 7f3bb7f5 authored by Christoph Hellwig's avatar Christoph Hellwig

sgiseeq: convert to dma_alloc_noncoherent

Use the new non-coherent DMA API including proper ownership transfers.
This includes adding additional calls to dma_sync_desc_dev as the
old syncing was rather ad-hoc.

Thanks to Thomas Bogendoerfer for debugging the ownership transfer
issues.
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Tested-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent 00718b23
......@@ -112,14 +112,18 @@ struct sgiseeq_private {
static inline void dma_sync_desc_cpu(struct net_device *dev, void *addr)
{
dma_cache_sync(dev->dev.parent, addr, sizeof(struct sgiseeq_rx_desc),
DMA_FROM_DEVICE);
struct sgiseeq_private *sp = netdev_priv(dev);
dma_sync_single_for_cpu(dev->dev.parent, VIRT_TO_DMA(sp, addr),
sizeof(struct sgiseeq_rx_desc), DMA_BIDIRECTIONAL);
}
static inline void dma_sync_desc_dev(struct net_device *dev, void *addr)
{
dma_cache_sync(dev->dev.parent, addr, sizeof(struct sgiseeq_rx_desc),
DMA_TO_DEVICE);
struct sgiseeq_private *sp = netdev_priv(dev);
dma_sync_single_for_device(dev->dev.parent, VIRT_TO_DMA(sp, addr),
sizeof(struct sgiseeq_rx_desc), DMA_BIDIRECTIONAL);
}
static inline void hpc3_eth_reset(struct hpc3_ethregs *hregs)
......@@ -403,6 +407,8 @@ static inline void sgiseeq_rx(struct net_device *dev, struct sgiseeq_private *sp
rd = &sp->rx_desc[sp->rx_new];
dma_sync_desc_cpu(dev, rd);
}
dma_sync_desc_dev(dev, rd);
dma_sync_desc_cpu(dev, &sp->rx_desc[orig_end]);
sp->rx_desc[orig_end].rdma.cntinfo &= ~(HPCDMA_EOR);
dma_sync_desc_dev(dev, &sp->rx_desc[orig_end]);
......@@ -443,6 +449,7 @@ static inline void kick_tx(struct net_device *dev,
dma_sync_desc_cpu(dev, td);
}
if (td->tdma.cntinfo & HPCDMA_XIU) {
dma_sync_desc_dev(dev, td);
hregs->tx_ndptr = VIRT_TO_DMA(sp, td);
hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE;
}
......@@ -476,6 +483,7 @@ static inline void sgiseeq_tx(struct net_device *dev, struct sgiseeq_private *sp
if (!(td->tdma.cntinfo & (HPCDMA_XIU)))
break;
if (!(td->tdma.cntinfo & (HPCDMA_ETXD))) {
dma_sync_desc_dev(dev, td);
if (!(status & HPC3_ETXCTRL_ACTIVE)) {
hregs->tx_ndptr = VIRT_TO_DMA(sp, td);
hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE;
......@@ -740,8 +748,8 @@ static int sgiseeq_probe(struct platform_device *pdev)
sp = netdev_priv(dev);
/* Make private data page aligned */
sr = dma_alloc_attrs(&pdev->dev, sizeof(*sp->srings), &sp->srings_dma,
GFP_KERNEL, DMA_ATTR_NON_CONSISTENT);
sr = dma_alloc_noncoherent(&pdev->dev, sizeof(*sp->srings),
&sp->srings_dma, DMA_BIDIRECTIONAL, GFP_KERNEL);
if (!sr) {
printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n");
err = -ENOMEM;
......@@ -802,8 +810,8 @@ static int sgiseeq_probe(struct platform_device *pdev)
return 0;
err_out_free_attrs:
dma_free_attrs(&pdev->dev, sizeof(*sp->srings), sp->srings,
sp->srings_dma, DMA_ATTR_NON_CONSISTENT);
dma_free_noncoherent(&pdev->dev, sizeof(*sp->srings), sp->srings,
sp->srings_dma, DMA_BIDIRECTIONAL);
err_out_free_dev:
free_netdev(dev);
......@@ -817,8 +825,8 @@ static int sgiseeq_remove(struct platform_device *pdev)
struct sgiseeq_private *sp = netdev_priv(dev);
unregister_netdev(dev);
dma_free_attrs(&pdev->dev, sizeof(*sp->srings), sp->srings,
sp->srings_dma, DMA_ATTR_NON_CONSISTENT);
dma_free_noncoherent(&pdev->dev, sizeof(*sp->srings), sp->srings,
sp->srings_dma, DMA_BIDIRECTIONAL);
free_netdev(dev);
return 0;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment