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3c59x: convert to generic DMA API 

This driver supports EISA devices in addition to PCI devices, and relied
on the legacy behavior of the pci_dma* shims to pass on a NULL pointer
to the DMA API, and the DMA API being able to handle that.  When the
NULL forwarding broke the EISA support got broken.  Fix this by converting
to the DMA API instead of the legacy PCI shims.

Fixes: 4167b2ad ("PCI: Remove NULL device handling from PCI DMA API")
Reported-by: tedheadster <tedheadster@gmail.com>
Tested-by: tedheadster <tedheadster@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig 2018-05-12 12:16:50 +02:00 committed by David S. Miller
parent b84bbaf7a6
commit 55c82617c3
1 changed files with 51 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

104
drivers/net/ethernet/3com/3c59x.c
View File

@ -1212,9 +1212,9 @@ static int vortex_probe1(struct device *gendev, void __iomem *ioaddr, int irq,
vp->mii.reg_num_mask = 0x1f;
/* Makes sure rings are at least 16 byte aligned. */
vp->rx_ring = pci_alloc_consistent(pdev, sizeof(struct boom_rx_desc) * RX_RING_SIZE
vp->rx_ring = dma_alloc_coherent(gendev, sizeof(struct boom_rx_desc) * RX_RING_SIZE
+ sizeof(struct boom_tx_desc) * TX_RING_SIZE,
&vp->rx_ring_dma);
&vp->rx_ring_dma, GFP_KERNEL);
retval = -ENOMEM;
if (!vp->rx_ring)
goto free_device;
@ -1476,11 +1476,10 @@ static int vortex_probe1(struct device *gendev, void __iomem *ioaddr, int irq,
return 0;
free_ring:
pci_free_consistent(pdev,
sizeof(struct boom_rx_desc) * RX_RING_SIZE
+ sizeof(struct boom_tx_desc) * TX_RING_SIZE,
vp->rx_ring,
vp->rx_ring_dma);
dma_free_coherent(&pdev->dev,
sizeof(struct boom_rx_desc) * RX_RING_SIZE +
sizeof(struct boom_tx_desc) * TX_RING_SIZE,
vp->rx_ring, vp->rx_ring_dma);
free_device:
free_netdev(dev);
pr_err(PFX "vortex_probe1 fails. Returns %d\n", retval);
@ -1751,9 +1750,9 @@ vortex_open(struct net_device *dev)
break; /* Bad news! */
skb_reserve(skb, NET_IP_ALIGN); /* Align IP on 16 byte boundaries */
dma = pci_map_single(VORTEX_PCI(vp), skb->data,
PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma))
dma = dma_map_single(vp->gendev, skb->data,
PKT_BUF_SZ, DMA_FROM_DEVICE);
if (dma_mapping_error(vp->gendev, dma))
break;
vp->rx_ring[i].addr = cpu_to_le32(dma);
}
@ -2067,9 +2066,9 @@ vortex_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (vp->bus_master) {
/* Set the bus-master controller to transfer the packet. */
int len = (skb->len + 3) & ~3;
vp->tx_skb_dma = pci_map_single(VORTEX_PCI(vp), skb->data, len,
PCI_DMA_TODEVICE);
if (dma_mapping_error(&VORTEX_PCI(vp)->dev, vp->tx_skb_dma)) {
vp->tx_skb_dma = dma_map_single(vp->gendev, skb->data, len,
DMA_TO_DEVICE);
if (dma_mapping_error(vp->gendev, vp->tx_skb_dma)) {
dev_kfree_skb_any(skb);
dev->stats.tx_dropped++;
return NETDEV_TX_OK;
@ -2168,9 +2167,9 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
vp->tx_ring[entry].status = cpu_to_le32(skb->len | TxIntrUploaded | AddTCPChksum | AddUDPChksum);
if (!skb_shinfo(skb)->nr_frags) {
dma_addr = pci_map_single(VORTEX_PCI(vp), skb->data, skb->len,
PCI_DMA_TODEVICE);
if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr))
dma_addr = dma_map_single(vp->gendev, skb->data, skb->len,
DMA_TO_DEVICE);
if (dma_mapping_error(vp->gendev, dma_addr))
goto out_dma_err;
vp->tx_ring[entry].frag[0].addr = cpu_to_le32(dma_addr);
@ -2178,9 +2177,9 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
} else {
int i;
dma_addr = pci_map_single(VORTEX_PCI(vp), skb->data,
skb_headlen(skb), PCI_DMA_TODEVICE);
if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr))
dma_addr = dma_map_single(vp->gendev, skb->data,
skb_headlen(skb), DMA_TO_DEVICE);
if (dma_mapping_error(vp->gendev, dma_addr))
goto out_dma_err;
vp->tx_ring[entry].frag[0].addr = cpu_to_le32(dma_addr);
@ -2189,21 +2188,21 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
dma_addr = skb_frag_dma_map(&VORTEX_PCI(vp)->dev, frag,
dma_addr = skb_frag_dma_map(vp->gendev, frag,
0,
frag->size,
DMA_TO_DEVICE);
if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr)) {
if (dma_mapping_error(vp->gendev, dma_addr)) {
for(i = i-1; i >= 0; i--)
dma_unmap_page(&VORTEX_PCI(vp)->dev,
dma_unmap_page(vp->gendev,
le32_to_cpu(vp->tx_ring[entry].frag[i+1].addr),
le32_to_cpu(vp->tx_ring[entry].frag[i+1].length),
DMA_TO_DEVICE);
pci_unmap_single(VORTEX_PCI(vp),
dma_unmap_single(vp->gendev,
le32_to_cpu(vp->tx_ring[entry].frag[0].addr),
le32_to_cpu(vp->tx_ring[entry].frag[0].length),
PCI_DMA_TODEVICE);
DMA_TO_DEVICE);
goto out_dma_err;
}
@ -2218,8 +2217,8 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
}
#else
dma_addr = pci_map_single(VORTEX_PCI(vp), skb->data, skb->len, PCI_DMA_TODEVICE);
if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr))
dma_addr = dma_map_single(vp->gendev, skb->data, skb->len, DMA_TO_DEVICE);
if (dma_mapping_error(vp->gendev, dma_addr))
goto out_dma_err;
vp->tx_ring[entry].addr = cpu_to_le32(dma_addr);
vp->tx_ring[entry].length = cpu_to_le32(skb->len | LAST_FRAG);
@ -2254,7 +2253,7 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
out:
return NETDEV_TX_OK;
out_dma_err:
dev_err(&VORTEX_PCI(vp)->dev, "Error mapping dma buffer\n");
dev_err(vp->gendev, "Error mapping dma buffer\n");
goto out;
}
@ -2322,7 +2321,7 @@ vortex_interrupt(int irq, void *dev_id)
if (status & DMADone) {
if (ioread16(ioaddr + Wn7_MasterStatus) & 0x1000) {
iowrite16(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */
pci_unmap_single(VORTEX_PCI(vp), vp->tx_skb_dma, (vp->tx_skb->len + 3) & ~3, PCI_DMA_TODEVICE);
dma_unmap_single(vp->gendev, vp->tx_skb_dma, (vp->tx_skb->len + 3) & ~3, DMA_TO_DEVICE);
pkts_compl++;
bytes_compl += vp->tx_skb->len;
dev_kfree_skb_irq(vp->tx_skb); /* Release the transferred buffer */
@ -2459,19 +2458,19 @@ boomerang_interrupt(int irq, void *dev_id)
struct sk_buff *skb = vp->tx_skbuff[entry];
#if DO_ZEROCOPY
int i;
pci_unmap_single(VORTEX_PCI(vp),
dma_unmap_single(vp->gendev,
le32_to_cpu(vp->tx_ring[entry].frag[0].addr),
le32_to_cpu(vp->tx_ring[entry].frag[0].length)&0xFFF,
PCI_DMA_TODEVICE);
DMA_TO_DEVICE);
for (i=1; i<=skb_shinfo(skb)->nr_frags; i++)
pci_unmap_page(VORTEX_PCI(vp),
dma_unmap_page(vp->gendev,
le32_to_cpu(vp->tx_ring[entry].frag[i].addr),
le32_to_cpu(vp->tx_ring[entry].frag[i].length)&0xFFF,
PCI_DMA_TODEVICE);
DMA_TO_DEVICE);
#else
pci_unmap_single(VORTEX_PCI(vp),
le32_to_cpu(vp->tx_ring[entry].addr), skb->len, PCI_DMA_TODEVICE);
dma_unmap_single(vp->gendev,
le32_to_cpu(vp->tx_ring[entry].addr), skb->len, DMA_TO_DEVICE);
#endif
pkts_compl++;
bytes_compl += skb->len;
@ -2561,14 +2560,14 @@ static int vortex_rx(struct net_device *dev)
/* 'skb_put()' points to the start of sk_buff data area. */
if (vp->bus_master &&
! (ioread16(ioaddr + Wn7_MasterStatus) & 0x8000)) {
dma_addr_t dma = pci_map_single(VORTEX_PCI(vp), skb_put(skb, pkt_len),
pkt_len, PCI_DMA_FROMDEVICE);
dma_addr_t dma = dma_map_single(vp->gendev, skb_put(skb, pkt_len),
pkt_len, DMA_FROM_DEVICE);
iowrite32(dma, ioaddr + Wn7_MasterAddr);
iowrite16((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen);
iowrite16(StartDMAUp, ioaddr + EL3_CMD);
while (ioread16(ioaddr + Wn7_MasterStatus) & 0x8000)
;
pci_unmap_single(VORTEX_PCI(vp), dma, pkt_len, PCI_DMA_FROMDEVICE);
dma_unmap_single(vp->gendev, dma, pkt_len, DMA_FROM_DEVICE);
} else {
ioread32_rep(ioaddr + RX_FIFO,
skb_put(skb, pkt_len),
@ -2635,11 +2634,11 @@ boomerang_rx(struct net_device *dev)
if (pkt_len < rx_copybreak &&
(skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) {
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
pci_dma_sync_single_for_cpu(VORTEX_PCI(vp), dma, PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
dma_sync_single_for_cpu(vp->gendev, dma, PKT_BUF_SZ, DMA_FROM_DEVICE);
/* 'skb_put()' points to the start of sk_buff data area. */
skb_put_data(skb, vp->rx_skbuff[entry]->data,
pkt_len);
pci_dma_sync_single_for_device(VORTEX_PCI(vp), dma, PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
dma_sync_single_for_device(vp->gendev, dma, PKT_BUF_SZ, DMA_FROM_DEVICE);
vp->rx_copy++;
} else {
/* Pre-allocate the replacement skb. If it or its
@ -2651,9 +2650,9 @@ boomerang_rx(struct net_device *dev)
dev->stats.rx_dropped++;
goto clear_complete;
}
newdma = pci_map_single(VORTEX_PCI(vp), newskb->data,
PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
if (dma_mapping_error(&VORTEX_PCI(vp)->dev, newdma)) {
newdma = dma_map_single(vp->gendev, newskb->data,
PKT_BUF_SZ, DMA_FROM_DEVICE);
if (dma_mapping_error(vp->gendev, newdma)) {
dev->stats.rx_dropped++;
consume_skb(newskb);
goto clear_complete;
@ -2664,7 +2663,7 @@ boomerang_rx(struct net_device *dev)
vp->rx_skbuff[entry] = newskb;
vp->rx_ring[entry].addr = cpu_to_le32(newdma);
skb_put(skb, pkt_len);
pci_unmap_single(VORTEX_PCI(vp), dma, PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
dma_unmap_single(vp->gendev, dma, PKT_BUF_SZ, DMA_FROM_DEVICE);
vp->rx_nocopy++;
}
skb->protocol = eth_type_trans(skb, dev);
@ -2761,8 +2760,8 @@ vortex_close(struct net_device *dev)
if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */
for (i = 0; i < RX_RING_SIZE; i++)
if (vp->rx_skbuff[i]) {
pci_unmap_single( VORTEX_PCI(vp), le32_to_cpu(vp->rx_ring[i].addr),
PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
dma_unmap_single(vp->gendev, le32_to_cpu(vp->rx_ring[i].addr),
PKT_BUF_SZ, DMA_FROM_DEVICE);
dev_kfree_skb(vp->rx_skbuff[i]);
vp->rx_skbuff[i] = NULL;
}
@ -2775,12 +2774,12 @@ vortex_close(struct net_device *dev)
int k;
for (k=0; k<=skb_shinfo(skb)->nr_frags; k++)
pci_unmap_single(VORTEX_PCI(vp),
dma_unmap_single(vp->gendev,
le32_to_cpu(vp->tx_ring[i].frag[k].addr),
le32_to_cpu(vp->tx_ring[i].frag[k].length)&0xFFF,
PCI_DMA_TODEVICE);
DMA_TO_DEVICE);
#else
pci_unmap_single(VORTEX_PCI(vp), le32_to_cpu(vp->tx_ring[i].addr), skb->len, PCI_DMA_TODEVICE);
dma_unmap_single(vp->gendev, le32_to_cpu(vp->tx_ring[i].addr), skb->len, DMA_TO_DEVICE);
#endif
dev_kfree_skb(skb);
vp->tx_skbuff[i] = NULL;
@ -3288,11 +3287,10 @@ static void vortex_remove_one(struct pci_dev *pdev)
pci_iounmap(pdev, vp->ioaddr);
pci_free_consistent(pdev,
sizeof(struct boom_rx_desc) * RX_RING_SIZE
+ sizeof(struct boom_tx_desc) * TX_RING_SIZE,
vp->rx_ring,
vp->rx_ring_dma);
dma_free_coherent(&pdev->dev,
sizeof(struct boom_rx_desc) * RX_RING_SIZE +
sizeof(struct boom_tx_desc) * TX_RING_SIZE,
vp->rx_ring, vp->rx_ring_dma);
pci_release_regions(pdev);