Name: Lanstreamer token-ring driver update
Author: Kent Yoder
Status: Tested on 2.4.20-pre7 and 2.5.7
D: Patch gets rid of virt_to_bus calls using the newer pci_map/unmap calls,
D: as well as fixing 1 bug in the init code.
Please apply to 2.4 and 2.5,
Thanks,
Kent
--- linux-2.5.7/drivers/net/tokenring/lanstreamer.c Mon Mar 18 14:37:14 2002
+++ linux-2.5.7.fantasgreat/drivers/net/tokenring/lanstreamer.c Fri Sep 27 11:15:39 2002
@@ -65,6 +65,7 @@
* 11/05/01 - Restructured the interrupt function, added delays, reduced the
* the number of TX descriptors to 1, which together can prevent
* the card from locking up the box - <yoder1@us.ibm.com>
+ * 09/27/02 - New PCI interface + bug fix. - <yoder1@us.ibm.com>
*
* To Do:
*
@@ -136,7 +137,7 @@
*/
static char version[] = "LanStreamer.c v0.4.0 03/08/01 - Mike Sullivan\n"
- " v0.5.1 03/04/02 - Kent Yoder";
+ " v0.5.2 09/30/02 - Kent Yoder";
static struct pci_device_id streamer_pci_tbl[] __initdata = {
{ PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_TR, PCI_ANY_ID, PCI_ANY_ID,},
@@ -250,6 +251,12 @@
dev_streamer=streamer_priv;
#endif
#endif
+
+ if(pci_set_dma_mask(pdev, 0xFFFFFFFF)) {
+ printk(KERN_ERR "%s: No suitable PCI mapping available.\n", dev->name);
+ rc = -ENODEV;
+ goto err_out;
+ }
if (pci_enable_device(pdev)) {
printk(KERN_ERR "lanstreamer: unable to enable pci device\n");
@@ -481,9 +488,11 @@
data=((u8 *)skb->data)+sizeof(struct streamer_rx_desc);
rx_ring->forward=0;
rx_ring->status=0;
- rx_ring->buffer=virt_to_bus(data);
+ rx_ring->buffer=cpu_to_le32(pci_map_single(streamer_priv->pci_dev, data,
+ 512, PCI_DMA_FROMDEVICE));
rx_ring->framelen_buflen=512;
- writel(virt_to_bus(rx_ring),streamer_mmio+RXBDA);
+ writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, rx_ring, 512, PCI_DMA_FROMDEVICE)),
+ streamer_mmio+RXBDA);
}
#if STREAMER_DEBUG
@@ -499,6 +508,8 @@
printk(KERN_ERR
"IBM PCI tokenring card not responding\n");
release_region(dev->base_addr, STREAMER_IO_SPACE);
+ if (skb)
+ dev_kfree_skb(skb);
return -1;
}
}
@@ -773,14 +784,19 @@
skb->dev = dev;
- streamer_priv->streamer_rx_ring[i].forward = virt_to_bus(&streamer_priv->streamer_rx_ring[i + 1]);
+ streamer_priv->streamer_rx_ring[i].forward =
+ cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[i + 1],
+ sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE));
streamer_priv->streamer_rx_ring[i].status = 0;
- streamer_priv->streamer_rx_ring[i].buffer = virt_to_bus(skb->data);
+ streamer_priv->streamer_rx_ring[i].buffer =
+ cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data,
+ streamer_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE));
streamer_priv->streamer_rx_ring[i].framelen_buflen = streamer_priv->pkt_buf_sz;
streamer_priv->rx_ring_skb[i] = skb;
}
streamer_priv->streamer_rx_ring[STREAMER_RX_RING_SIZE - 1].forward =
- virt_to_bus(&streamer_priv->streamer_rx_ring[0]);
+ cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[0],
+ sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE));
if (i == 0) {
printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers. Adapter disabled\n", dev->name);
@@ -790,8 +806,12 @@
streamer_priv->rx_ring_last_received = STREAMER_RX_RING_SIZE - 1; /* last processed rx status */
- writel(virt_to_bus(&streamer_priv->streamer_rx_ring[0]), streamer_mmio + RXBDA);
- writel(virt_to_bus(&streamer_priv->streamer_rx_ring[STREAMER_RX_RING_SIZE - 1]), streamer_mmio + RXLBDA);
+ writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[0],
+ sizeof(struct streamer_rx_desc), PCI_DMA_TODEVICE)),
+ streamer_mmio + RXBDA);
+ writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[STREAMER_RX_RING_SIZE - 1],
+ sizeof(struct streamer_rx_desc), PCI_DMA_TODEVICE)),
+ streamer_mmio + RXLBDA);
/* set bus master interrupt event mask */
writew(MISR_RX_NOBUF | MISR_RX_EOF, streamer_mmio + MISR_MASK);
@@ -807,7 +827,10 @@
writew(~BMCTL_TX2_DIS, streamer_mmio + BMCTL_RUM); /* Enables TX channel 2 */
for (i = 0; i < STREAMER_TX_RING_SIZE; i++) {
- streamer_priv->streamer_tx_ring[i].forward = virt_to_bus(&streamer_priv->streamer_tx_ring[i + 1]);
+ streamer_priv->streamer_tx_ring[i].forward = cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
+ &streamer_priv->streamer_tx_ring[i + 1],
+ sizeof(struct streamer_tx_desc),
+ PCI_DMA_TODEVICE));
streamer_priv->streamer_tx_ring[i].status = 0;
streamer_priv->streamer_tx_ring[i].bufcnt_framelen = 0;
streamer_priv->streamer_tx_ring[i].buffer = 0;
@@ -817,7 +840,8 @@
streamer_priv->streamer_tx_ring[i].rsvd3 = 0;
}
streamer_priv->streamer_tx_ring[STREAMER_TX_RING_SIZE - 1].forward =
- virt_to_bus(&streamer_priv->streamer_tx_ring[0]);
+ cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_tx_ring[0],
+ sizeof(struct streamer_tx_desc), PCI_DMA_TODEVICE));
streamer_priv->free_tx_ring_entries = STREAMER_TX_RING_SIZE;
streamer_priv->tx_ring_free = 0; /* next entry in tx ring to use */
@@ -915,6 +939,11 @@
skb->dev = dev;
if (buffer_cnt == 1) {
+ /* release the DMA mapping */
+ pci_unmap_single(streamer_priv->pci_dev,
+ le32_to_cpu(streamer_priv->streamer_rx_ring[rx_ring_last_received].buffer),
+ streamer_priv->pkt_buf_sz,
+ PCI_DMA_FROMDEVICE);
skb2 = streamer_priv->rx_ring_skb[rx_ring_last_received];
#if STREAMER_DEBUG_PACKETS
{
@@ -934,20 +963,29 @@
/* recycle this descriptor */
streamer_priv->streamer_rx_ring[rx_ring_last_received].status = 0;
streamer_priv->streamer_rx_ring[rx_ring_last_received].framelen_buflen = streamer_priv->pkt_buf_sz;
- streamer_priv->streamer_rx_ring[rx_ring_last_received].buffer = virt_to_bus(skb->data);
- streamer_priv-> rx_ring_skb[rx_ring_last_received] = skb;
+ streamer_priv->streamer_rx_ring[rx_ring_last_received].buffer =
+ cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data, streamer_priv->pkt_buf_sz,
+ PCI_DMA_FROMDEVICE));
+ streamer_priv->rx_ring_skb[rx_ring_last_received] = skb;
/* place recycled descriptor back on the adapter */
- writel(virt_to_bus(&streamer_priv->streamer_rx_ring[rx_ring_last_received]),streamer_mmio + RXLBDA);
+ writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
+ &streamer_priv->streamer_rx_ring[rx_ring_last_received],
+ sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE)),
+ streamer_mmio + RXLBDA);
/* pass the received skb up to the protocol */
netif_rx(skb2);
} else {
do { /* Walk the buffers */
- memcpy(skb_put(skb, length),bus_to_virt(rx_desc->buffer), length); /* copy this fragment */
+ pci_unmap_single(streamer_priv->pci_dev, le32_to_cpu(rx_desc->buffer), length, PCI_DMA_FROMDEVICE),
+ memcpy(skb_put(skb, length), (void *)rx_desc->buffer, length); /* copy this fragment */
streamer_priv->streamer_rx_ring[rx_ring_last_received].status = 0;
streamer_priv->streamer_rx_ring[rx_ring_last_received].framelen_buflen = streamer_priv->pkt_buf_sz;
/* give descriptor back to the adapter */
- writel(virt_to_bus(&streamer_priv->streamer_rx_ring[rx_ring_last_received]), streamer_mmio + RXLBDA);
+ writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
+ &streamer_priv->streamer_rx_ring[rx_ring_last_received],
+ length, PCI_DMA_FROMDEVICE)),
+ streamer_mmio + RXLBDA);
if (rx_desc->status & 0x80000000)
break; /* this descriptor completes the frame */
@@ -1114,7 +1152,8 @@
if (streamer_priv->free_tx_ring_entries) {
streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].status = 0;
streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].bufcnt_framelen = 0x00020000 | skb->len;
- streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].buffer = virt_to_bus(skb->data);
+ streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].buffer =
+ cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE));
streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd1 = skb->len;
streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd2 = 0;
streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd3 = 0;
@@ -1135,7 +1174,10 @@
}
#endif
- writel(virt_to_bus (&streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free]),streamer_mmio + TX2LFDA);
+ writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
+ &streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free],
+ sizeof(struct streamer_tx_desc), PCI_DMA_TODEVICE)),
+ streamer_mmio + TX2LFDA);
(void)readl(streamer_mmio + TX2LFDA);
streamer_priv->tx_ring_free = (streamer_priv->tx_ring_free + 1) & (STREAMER_TX_RING_SIZE - 1);
-
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