-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Driver for SGI's IOC3 based Ethernet cards as found in the PCI card.
+// SPDX-License-Identifier: GPL-2.0
+/* Driver for SGI's IOC3 based Ethernet cards as found in the PCI card.
*
* Copyright (C) 1999, 2000, 01, 03, 06 Ralf Baechle
* Copyright (C) 1995, 1999, 2000, 2001 by Silicon Graphics, Inc.
#include <linux/crc32.h>
#include <linux/mii.h>
#include <linux/in.h>
+#include <linux/io.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <net/ip.h>
#include <asm/byteorder.h>
-#include <asm/io.h>
#include <asm/pgtable.h>
#include <linux/uaccess.h>
#include <asm/sn/types.h>
#include <asm/sn/ioc3.h>
#include <asm/pci/bridge.h>
-/*
- * 64 RX buffers. This is tunable in the range of 16 <= x < 512. The
+/* 64 RX buffers. This is tunable in the range of 16 <= x < 512. The
* value must be a power of two.
*/
#define RX_BUFFS 64
-#define ETCSR_FD ((17<<ETCSR_IPGR2_SHIFT) | (11<<ETCSR_IPGR1_SHIFT) | 21)
-#define ETCSR_HD ((21<<ETCSR_IPGR2_SHIFT) | (21<<ETCSR_IPGR1_SHIFT) | 21)
+#define ETCSR_FD ((17 << ETCSR_IPGR2_SHIFT) | (11 << ETCSR_IPGR1_SHIFT) | 21)
+#define ETCSR_HD ((21 << ETCSR_IPGR2_SHIFT) | (21 << ETCSR_IPGR1_SHIFT) | 21)
/* Private per NIC data of the driver. */
struct ioc3_private {
return (~addr + 1) & (IOC3_CACHELINE - 1UL);
}
-static inline struct sk_buff * ioc3_alloc_skb(unsigned long length,
- unsigned int gfp_mask)
+static inline struct sk_buff *ioc3_alloc_skb(unsigned long length,
+ unsigned int gfp_mask)
{
struct sk_buff *skb;
skb = alloc_skb(length + IOC3_CACHELINE - 1, gfp_mask);
if (likely(skb)) {
- int offset = aligned_rx_skb_addr((unsigned long) skb->data);
+ int offset = aligned_rx_skb_addr((unsigned long)skb->data);
+
if (offset)
skb_reserve(skb, offset);
}
}
/* BEWARE: The IOC3 documentation documents the size of rx buffers as
- 1644 while it's actually 1664. This one was nasty to track down ... */
+ * 1644 while it's actually 1664. This one was nasty to track down ...
+ */
#define RX_OFFSET 10
#define RX_BUF_ALLOC_SIZE (1664 + RX_OFFSET + IOC3_CACHELINE)
-/* DMA barrier to separate cached and uncached accesses. */
-#define BARRIER() \
- __asm__("sync" ::: "memory")
-
-
#define IOC3_SIZE 0x100000
static inline u32 mcr_pack(u32 pulse, u32 sample)
static int nic_reset(u32 __iomem *mcr)
{
- int presence;
+ int presence;
writel(mcr_pack(500, 65), mcr);
presence = nic_wait(mcr);
writel(mcr_pack(0, 500), mcr);
nic_wait(mcr);
- return presence;
+ return presence;
}
static inline int nic_read_bit(u32 __iomem *mcr)
nic_wait(mcr);
}
-/*
- * Read a byte from an iButton device
+/* Read a byte from an iButton device
*/
static u32 nic_read_byte(u32 __iomem *mcr)
{
return result;
}
-/*
- * Write a byte to an iButton device
+/* Write a byte to an iButton device
*/
static void nic_write_byte(u32 __iomem *mcr, int byte)
{
b = nic_read_bit(mcr);
if (a && b) {
- printk("NIC search failed (not fatal).\n");
+ pr_warn("NIC search failed (not fatal).\n");
*last = 0;
return 0;
}
} else if (index > *last) {
address &= ~(1UL << index);
disc = index;
- } else if ((address & (1UL << index)) == 0)
+ } else if ((address & (1UL << index)) == 0) {
disc = index;
+ }
nic_write_bit(mcr, address & (1UL << index));
continue;
} else {
while (1) {
u64 reg;
+
reg = nic_find(mcr, &save);
switch (reg & 0xff) {
break;
}
- printk("Found %s NIC", type);
+ pr_info("Found %s NIC", type);
if (type != unknown)
- printk (" registration number %pM, CRC %02x", serial, crc);
- printk(".\n");
+ pr_cont(" registration number %pM, CRC %02x", serial, crc);
+ pr_cont(".\n");
return 0;
}
-/*
- * Read the NIC (Number-In-a-Can) device used to store the MAC address on
+/* Read the NIC (Number-In-a-Can) device used to store the MAC address on
* SN0 / SN00 nodeboards and PCI cards.
*/
static void ioc3_get_eaddr_nic(struct ioc3_private *ip)
}
if (tries < 0) {
- printk("Failed to read MAC address\n");
+ pr_err("Failed to read MAC address\n");
return;
}
ip->dev->dev_addr[i - 2] = nic[i];
}
-/*
- * Ok, this is hosed by design. It's necessary to know what machine the
+/* Ok, this is hosed by design. It's necessary to know what machine the
* NIC is in in order to know how to read the NIC address. We also have
* to know if it's a PCI card or a NIC in on the node board ...
*/
{
ioc3_get_eaddr_nic(ip);
- printk("Ethernet address is %pM.\n", ip->dev->dev_addr);
+ pr_info("Ethernet address is %pM.\n", ip->dev->dev_addr);
}
static void __ioc3_set_mac_address(struct net_device *dev)
return 0;
}
-/*
- * Caller must hold the ioc3_lock ever for MII readers. This is also
+/* Caller must hold the ioc3_lock ever for MII readers. This is also
* used to protect the transmitter side but it's low contention.
*/
static int ioc3_mdio_read(struct net_device *dev, int phy, int reg)
return &dev->stats;
}
-static void ioc3_tcpudp_checksum(struct sk_buff *skb, uint32_t hwsum, int len)
+static void ioc3_tcpudp_checksum(struct sk_buff *skb, u32 hwsum, int len)
{
struct ethhdr *eh = eth_hdr(skb);
- uint32_t csum, ehsum;
unsigned int proto;
- struct iphdr *ih;
- uint16_t *ew;
unsigned char *cp;
+ struct iphdr *ih;
+ u32 csum, ehsum;
+ u16 *ew;
- /*
- * Did hardware handle the checksum at all? The cases we can handle
+ /* Did hardware handle the checksum at all? The cases we can handle
* are:
*
* - TCP and UDP checksums of IPv4 only.
if (eh->h_proto != htons(ETH_P_IP))
return;
- ih = (struct iphdr *) ((char *)eh + ETH_HLEN);
+ ih = (struct iphdr *)((char *)eh + ETH_HLEN);
if (ip_is_fragment(ih))
return;
/* Same as tx - compute csum of pseudo header */
csum = hwsum +
(ih->tot_len - (ih->ihl << 2)) +
- htons((uint16_t)ih->protocol) +
+ htons((u16)ih->protocol) +
(ih->saddr >> 16) + (ih->saddr & 0xffff) +
(ih->daddr >> 16) + (ih->daddr & 0xffff);
/* Sum up ethernet dest addr, src addr and protocol */
- ew = (uint16_t *) eh;
+ ew = (u16 *)eh;
ehsum = ew[0] + ew[1] + ew[2] + ew[3] + ew[4] + ew[5] + ew[6];
ehsum = (ehsum & 0xffff) + (ehsum >> 16);
csum += 0xffff ^ ehsum;
/* In the next step we also subtract the 1's complement
- checksum of the trailing ethernet CRC. */
+ * checksum of the trailing ethernet CRC.
+ */
cp = (char *)eh + len; /* points at trailing CRC */
if (len & 1) {
- csum += 0xffff ^ (uint16_t) ((cp[1] << 8) | cp[0]);
- csum += 0xffff ^ (uint16_t) ((cp[3] << 8) | cp[2]);
+ csum += 0xffff ^ (u16)((cp[1] << 8) | cp[0]);
+ csum += 0xffff ^ (u16)((cp[3] << 8) | cp[2]);
} else {
- csum += 0xffff ^ (uint16_t) ((cp[0] << 8) | cp[1]);
- csum += 0xffff ^ (uint16_t) ((cp[2] << 8) | cp[3]);
+ csum += 0xffff ^ (u16)((cp[0] << 8) | cp[1]);
+ csum += 0xffff ^ (u16)((cp[2] << 8) | cp[3]);
}
csum = (csum & 0xffff) + (csum >> 16);
n_entry = ip->rx_pi;
skb = ip->rx_skbs[rx_entry];
- rxb = (struct ioc3_erxbuf *) (skb->data - RX_OFFSET);
+ rxb = (struct ioc3_erxbuf *)(skb->data - RX_OFFSET);
w0 = be32_to_cpu(rxb->w0);
while (w0 & ERXBUF_V) {
new_skb = ioc3_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
if (!new_skb) {
/* Ouch, drop packet and just recycle packet
- to keep the ring filled. */
+ * to keep the ring filled.
+ */
dev->stats.rx_dropped++;
new_skb = skb;
goto next;
if (likely(dev->features & NETIF_F_RXCSUM))
ioc3_tcpudp_checksum(skb,
- w0 & ERXBUF_IPCKSUM_MASK, len);
+ w0 & ERXBUF_IPCKSUM_MASK,
+ len);
netif_rx(skb);
/* Because we reserve afterwards. */
skb_put(new_skb, (1664 + RX_OFFSET));
- rxb = (struct ioc3_erxbuf *) new_skb->data;
+ rxb = (struct ioc3_erxbuf *)new_skb->data;
skb_reserve(new_skb, RX_OFFSET);
dev->stats.rx_packets++; /* Statistics */
dev->stats.rx_bytes += len;
} else {
/* The frame is invalid and the skb never
- reached the network layer so we can just
- recycle it. */
+ * reached the network layer so we can just
+ * recycle it.
+ */
new_skb = skb;
dev->stats.rx_errors++;
}
/* Now go on to the next ring entry. */
rx_entry = (rx_entry + 1) & 511;
skb = ip->rx_skbs[rx_entry];
- rxb = (struct ioc3_erxbuf *) (skb->data - RX_OFFSET);
+ rxb = (struct ioc3_erxbuf *)(skb->data - RX_OFFSET);
w0 = be32_to_cpu(rxb->w0);
}
writel((n_entry << 3) | ERPIR_ARM, &ip->regs->erpir);
spin_unlock(&ip->ioc3_lock);
}
-/*
- * Deal with fatal IOC3 errors. This condition might be caused by a hard or
+/* Deal with fatal IOC3 errors. This condition might be caused by a hard or
* software problems, so we should try to recover
* more gracefully if this ever happens. In theory we might be flooded
* with such error interrupts if something really goes wrong, so we might
static void ioc3_error(struct net_device *dev, u32 eisr)
{
struct ioc3_private *ip = netdev_priv(dev);
- unsigned char *iface = dev->name;
spin_lock(&ip->ioc3_lock);
if (eisr & EISR_RXOFLO)
- printk(KERN_ERR "%s: RX overflow.\n", iface);
+ net_err_ratelimited("%s: RX overflow.\n", dev->name);
if (eisr & EISR_RXBUFOFLO)
- printk(KERN_ERR "%s: RX buffer overflow.\n", iface);
+ net_err_ratelimited("%s: RX buffer overflow.\n", dev->name);
if (eisr & EISR_RXMEMERR)
- printk(KERN_ERR "%s: RX PCI error.\n", iface);
+ net_err_ratelimited("%s: RX PCI error.\n", dev->name);
if (eisr & EISR_RXPARERR)
- printk(KERN_ERR "%s: RX SSRAM parity error.\n", iface);
+ net_err_ratelimited("%s: RX SSRAM parity error.\n", dev->name);
if (eisr & EISR_TXBUFUFLO)
- printk(KERN_ERR "%s: TX buffer underflow.\n", iface);
+ net_err_ratelimited("%s: TX buffer underflow.\n", dev->name);
if (eisr & EISR_TXMEMERR)
- printk(KERN_ERR "%s: TX PCI error.\n", iface);
+ net_err_ratelimited("%s: TX PCI error.\n", dev->name);
ioc3_stop(ip);
ioc3_init(dev);
}
/* The interrupt handler does all of the Rx thread work and cleans up
- after the Tx thread. */
+ * after the Tx thread.
+ */
static irqreturn_t ioc3_interrupt(int irq, void *dev_id)
{
struct ioc3_private *ip = netdev_priv(dev_id);
readl(®s->eisr); /* Flush */
if (eisr & (EISR_RXOFLO | EISR_RXBUFOFLO | EISR_RXMEMERR |
- EISR_RXPARERR | EISR_TXBUFUFLO | EISR_TXMEMERR))
+ EISR_RXPARERR | EISR_TXBUFUFLO | EISR_TXMEMERR))
ioc3_error(dev_id, eisr);
if (eisr & EISR_RXTIMERINT)
ioc3_rx(dev_id);
mii_check_media(&ip->mii, 1, 0);
ioc3_setup_duplex(ip);
- ip->ioc3_timer.expires = jiffies + ((12 * HZ)/10); /* 1.2s */
+ ip->ioc3_timer.expires = jiffies + ((12 * HZ) / 10); /* 1.2s */
add_timer(&ip->ioc3_timer);
}
-/*
- * Try to find a PHY. There is no apparent relation between the MII addresses
+/* Try to find a PHY. There is no apparent relation between the MII addresses
* in the SGI documentation and what we find in reality, so we simply probe
* for the PHY. It seems IOC3 PHYs usually live on address 31. One of my
* onboard IOC3s has the special oddity that probing doesn't seem to find it
*/
static int ioc3_mii_init(struct ioc3_private *ip)
{
- int i, found = 0, res = 0;
int ioc3_phy_workaround = 1;
+ int i, found = 0, res = 0;
u16 word;
for (i = 0; i < 32; i++) {
}
if (!found) {
- if (ioc3_phy_workaround)
+ if (ioc3_phy_workaround) {
i = 31;
- else {
+ } else {
ip->mii.phy_id = -1;
res = -ENODEV;
goto out;
static void ioc3_mii_start(struct ioc3_private *ip)
{
- ip->ioc3_timer.expires = jiffies + (12 * HZ)/10; /* 1.2 sec. */
+ ip->ioc3_timer.expires = jiffies + (12 * HZ) / 10; /* 1.2 sec. */
add_timer(&ip->ioc3_timer);
}
static inline void ioc3_clean_rx_ring(struct ioc3_private *ip)
{
+ struct ioc3_erxbuf *rxb;
struct sk_buff *skb;
int i;
ip->rx_pi &= 511;
ip->rx_ci &= 511;
- for (i = ip->rx_ci; i != ip->rx_pi; i = (i+1) & 511) {
- struct ioc3_erxbuf *rxb;
+ for (i = ip->rx_ci; i != ip->rx_pi; i = (i + 1) & 511) {
skb = ip->rx_skbs[i];
- rxb = (struct ioc3_erxbuf *) (skb->data - RX_OFFSET);
+ rxb = (struct ioc3_erxbuf *)(skb->data - RX_OFFSET);
rxb->w0 = 0;
}
}
struct sk_buff *skb;
int i;
- for (i=0; i < 128; i++) {
+ for (i = 0; i < 128; i++) {
skb = ip->tx_skbs[i];
if (skb) {
ip->tx_skbs[i] = NULL;
unsigned long *rxr;
int i;
- if (ip->rxr == NULL) {
+ if (!ip->rxr) {
/* Allocate and initialize rx ring. 4kb = 512 entries */
- ip->rxr = (unsigned long *) get_zeroed_page(GFP_ATOMIC);
+ ip->rxr = (unsigned long *)get_zeroed_page(GFP_ATOMIC);
rxr = ip->rxr;
if (!rxr)
- printk("ioc3_alloc_rings(): get_zeroed_page() failed!\n");
+ pr_err("%s: get_zeroed_page() failed!\n", __func__);
/* Now the rx buffers. The RX ring may be larger but
- we only allocate 16 buffers for now. Need to tune
- this for performance and memory later. */
+ * we only allocate 16 buffers for now. Need to tune
+ * this for performance and memory later.
+ */
for (i = 0; i < RX_BUFFS; i++) {
struct sk_buff *skb;
/* Because we reserve afterwards. */
skb_put(skb, (1664 + RX_OFFSET));
- rxb = (struct ioc3_erxbuf *) skb->data;
+ rxb = (struct ioc3_erxbuf *)skb->data;
rxr[i] = cpu_to_be64(ioc3_map(rxb, 1));
skb_reserve(skb, RX_OFFSET);
}
ip->rx_pi = RX_BUFFS;
}
- if (ip->txr == NULL) {
+ if (!ip->txr) {
/* Allocate and initialize tx rings. 16kb = 128 bufs. */
ip->txr = (struct ioc3_etxd *)__get_free_pages(GFP_KERNEL, 2);
if (!ip->txr)
- printk("ioc3_alloc_rings(): __get_free_pages() failed!\n");
+ pr_err("%s: __get_free_pages() failed!\n", __func__);
ip->tx_pi = 0;
ip->tx_ci = 0;
}
ioc3_init_rings(dev);
ip->emcr |= ((RX_OFFSET / 2) << EMCR_RXOFF_SHIFT) | EMCR_TXDMAEN |
- EMCR_TXEN | EMCR_RXDMAEN | EMCR_RXEN | EMCR_PADEN;
+ EMCR_TXEN | EMCR_RXDMAEN | EMCR_RXEN | EMCR_PADEN;
writel(ip->emcr, ®s->emcr);
writel(EISR_RXTIMERINT | EISR_RXOFLO | EISR_RXBUFOFLO |
EISR_RXMEMERR | EISR_RXPARERR | EISR_TXBUFUFLO |
struct ioc3_private *ip = netdev_priv(dev);
if (request_irq(dev->irq, ioc3_interrupt, IRQF_SHARED, ioc3_str, dev)) {
- printk(KERN_ERR "%s: Can't get irq %d\n", dev->name, dev->irq);
+ netdev_err(dev, "Can't get irq %d\n", dev->irq);
return -EAGAIN;
}
return 0;
}
-/*
- * MENET cards have four IOC3 chips, which are attached to two sets of
+/* MENET cards have four IOC3 chips, which are attached to two sets of
* PCI slot resources each: the primary connections are on slots
* 0..3 and the secondaries are on 4..7
*
if (dev) {
if (dev->vendor == PCI_VENDOR_ID_SGI &&
- dev->device == PCI_DEVICE_ID_SGI_IOC3)
+ dev->device == PCI_DEVICE_ID_SGI_IOC3)
ret = 1;
pci_dev_put(dev);
}
static int ioc3_is_menet(struct pci_dev *pdev)
{
- return pdev->bus->parent == NULL &&
+ return !pdev->bus->parent &&
ioc3_adjacent_is_ioc3(pdev, 0) &&
ioc3_adjacent_is_ioc3(pdev, 1) &&
ioc3_adjacent_is_ioc3(pdev, 2);
}
#ifdef CONFIG_SERIAL_8250
-/*
- * Note about serial ports and consoles:
+/* Note about serial ports and consoles:
* For console output, everyone uses the IOC3 UARTA (offset 0x178)
* connected to the master node (look in ip27_setup_console() and
* ip27prom_console_write()).
#define COSMISC_CONSTANT 6
struct uart_8250_port port = {
- .port = {
+ .port = {
.irq = 0,
.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 0,
.uartclk = (22000000 << 1) / COSMISC_CONSTANT,
- .membase = (unsigned char __iomem *) uart,
- .mapbase = (unsigned long) uart,
- }
+ .membase = (unsigned char __iomem *)uart,
+ .mapbase = (unsigned long)uart,
+ }
};
unsigned char lcr;
{
u32 sio_iec;
- /*
- * We need to recognice and treat the fourth MENET serial as it
+ /* We need to recognice and treat the fourth MENET serial as it
* does not have an SuperIO chip attached to it, therefore attempting
* to access it will result in bus errors. We call something an
* MENET if PCI slot 0, 1, 2 and 3 of a master PCI bus all have an IOC3
if (ioc3_is_menet(pdev) && PCI_SLOT(pdev->devfn) == 3)
return;
- /*
- * Switch IOC3 to PIO mode. It probably already was but let's be
+ /* Switch IOC3 to PIO mode. It probably already was but let's be
* paranoid
*/
writel(GPCR_UARTA_MODESEL | GPCR_UARTB_MODESEL, &ioc3->gpcr_s);
pci_using_dac = 1;
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
if (err < 0) {
- printk(KERN_ERR "%s: Unable to obtain 64 bit DMA "
- "for consistent allocations\n", pci_name(pdev));
+ pr_err("%s: Unable to obtain 64 bit DMA for consistent allocations\n",
+ pci_name(pdev));
goto out;
}
} else {
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
- printk(KERN_ERR "%s: No usable DMA configuration, "
- "aborting.\n", pci_name(pdev));
+ pr_err("%s: No usable DMA configuration, aborting.\n",
+ pci_name(pdev));
goto out;
}
pci_using_dac = 0;
ioc3_base = pci_resource_start(pdev, 0);
ioc3_size = pci_resource_len(pdev, 0);
- ioc3 = (struct ioc3 *) ioremap(ioc3_base, ioc3_size);
+ ioc3 = (struct ioc3 *)ioremap(ioc3_base, ioc3_size);
if (!ioc3) {
- printk(KERN_CRIT "ioc3eth(%s): ioremap failed, goodbye.\n",
+ pr_err("ioc3eth(%s): ioremap failed, goodbye.\n",
pci_name(pdev));
err = -ENOMEM;
goto out_res;
ioc3_mii_init(ip);
if (ip->mii.phy_id == -1) {
- printk(KERN_CRIT "ioc3-eth(%s): Didn't find a PHY, goodbye.\n",
+ pr_err("ioc3-eth(%s): Didn't find a PHY, goodbye.\n",
pci_name(pdev));
err = -ENODEV;
goto out_stop;
vendor = (sw_physid1 << 12) | (sw_physid2 >> 4);
model = (sw_physid2 >> 4) & 0x3f;
rev = sw_physid2 & 0xf;
- printk(KERN_INFO "%s: Using PHY %d, vendor 0x%x, model %d, "
- "rev %d.\n", dev->name, ip->mii.phy_id, vendor, model, rev);
- printk(KERN_INFO "%s: IOC3 SSRAM has %d kbyte.\n", dev->name,
- ip->emcr & EMCR_BUFSIZ ? 128 : 64);
+ netdev_info(dev, "Using PHY %d, vendor 0x%x, model %d, rev %d.\n",
+ ip->mii.phy_id, vendor, model, rev);
+ netdev_info(dev, "IOC3 SSRAM has %d kbyte.\n",
+ ip->emcr & EMCR_BUFSIZ ? 128 : 64);
return 0;
out_free:
free_netdev(dev);
out_disable:
- /*
- * We should call pci_disable_device(pdev); here if the IOC3 wasn't
+ /* We should call pci_disable_device(pdev); here if the IOC3 wasn't
* such a weird device ...
*/
out:
iounmap(ip->all_regs);
pci_release_regions(pdev);
free_netdev(dev);
- /*
- * We should call pci_disable_device(pdev); here if the IOC3 wasn't
+ /* We should call pci_disable_device(pdev); here if the IOC3 wasn't
* such a weird device ...
*/
}
struct ioc3_etxd *desc;
unsigned long data;
unsigned int len;
- uint32_t w0 = 0;
int produce;
+ u32 w0 = 0;
- /*
- * IOC3 has a fairly simple minded checksumming hardware which simply
+ /* IOC3 has a fairly simple minded checksumming hardware which simply
* adds up the 1's complement checksum for the entire packet and
* inserts it at an offset which can be specified in the descriptor
* into the transmit packet. This means we have to compensate for the
const struct iphdr *ih = ip_hdr(skb);
const int proto = ntohs(ih->protocol);
unsigned int csoff;
- uint32_t csum, ehsum;
- uint16_t *eh;
+ u32 csum, ehsum;
+ u16 *eh;
/* The MAC header. skb->mac seem the logic approach
- to find the MAC header - except it's a NULL pointer ... */
- eh = (uint16_t *) skb->data;
+ * to find the MAC header - except it's a NULL pointer ...
+ */
+ eh = (u16 *)skb->data;
/* Sum up dest addr, src addr and protocol */
ehsum = eh[0] + eh[1] + eh[2] + eh[3] + eh[4] + eh[5] + eh[6];
ehsum = (ehsum & 0xffff) + (ehsum >> 16);
/* Skip IP header; it's sum is always zero and was
- already filled in by ip_output.c */
+ * already filled in by ip_output.c
+ */
csum = csum_tcpudp_nofold(ih->saddr, ih->daddr,
- ih->tot_len - (ih->ihl << 2),
- proto, 0xffff ^ ehsum);
+ ih->tot_len - (ih->ihl << 2),
+ proto, 0xffff ^ ehsum);
csum = (csum & 0xffff) + (csum >> 16); /* Fold again */
csum = (csum & 0xffff) + (csum >> 16);
spin_lock_irq(&ip->ioc3_lock);
- data = (unsigned long) skb->data;
+ data = (unsigned long)skb->data;
len = skb->len;
produce = ip->tx_pi;
unsigned long s2 = data + len - b2;
desc->cmd = cpu_to_be32(len | ETXD_INTWHENDONE |
- ETXD_B1V | ETXD_B2V | w0);
+ ETXD_B1V | ETXD_B2V | w0);
desc->bufcnt = cpu_to_be32((s1 << ETXD_B1CNT_SHIFT) |
- (s2 << ETXD_B2CNT_SHIFT));
+ (s2 << ETXD_B2CNT_SHIFT));
desc->p1 = cpu_to_be64(ioc3_map(skb->data, 1));
- desc->p2 = cpu_to_be64(ioc3_map((void *) b2, 1));
+ desc->p2 = cpu_to_be64(ioc3_map((void *)b2, 1));
} else {
/* Normal sized packet that doesn't cross a page boundary. */
desc->cmd = cpu_to_be32(len | ETXD_INTWHENDONE | ETXD_B1V | w0);
desc->p1 = cpu_to_be64(ioc3_map(skb->data, 1));
}
- BARRIER();
+ mb(); /* make sure all descriptor changes are visible */
ip->tx_skbs[produce] = skb; /* Remember skb */
produce = (produce + 1) & 127;
{
struct ioc3_private *ip = netdev_priv(dev);
- printk(KERN_ERR "%s: transmit timed out, resetting\n", dev->name);
+ netdev_err(dev, "transmit timed out, resetting\n");
spin_lock_irq(&ip->ioc3_lock);
netif_wake_queue(dev);
}
-/*
- * Given a multicast ethernet address, this routine calculates the
+/* Given a multicast ethernet address, this routine calculates the
* address's bit index in the logical address filter mask
*/
-
static inline unsigned int ioc3_hash(const unsigned char *addr)
{
unsigned int temp = 0;
- u32 crc;
int bits;
+ u32 crc;
crc = ether_crc_le(ETH_ALEN, addr);
return temp;
}
-static void ioc3_get_drvinfo (struct net_device *dev,
- struct ethtool_drvinfo *info)
+static void ioc3_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
{
struct ioc3_private *ip = netdev_priv(dev);
if ((dev->flags & IFF_ALLMULTI) ||
(netdev_mc_count(dev) > 64)) {
/* Too many for hashing to make sense or we want all
- multicast packets anyway, so skip computing all the
- hashes and just accept all packets. */
+ * multicast packets anyway, so skip computing all the
+ * hashes and just accept all packets.
+ */
ip->ehar_h = 0xffffffff;
ip->ehar_l = 0xffffffff;
} else {
projects / platform / kernel / linux-rpi.git / commitdiff