* [PATCH v2 net-next 03/15] net: sgi: ioc3-eth: remove checkpatch errors/warning
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
Before massaging the driver further fix oddities found by checkpatch like
- wrong indention
- comment formatting
- use of printk instead or netdev_xxx/pr_xxx
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 275 +++++++++++++++++-------------------
1 file changed, 130 insertions(+), 145 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 713d2472cb97..51cc1389e204 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -1,9 +1,5 @@
-/*
- * 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.
@@ -39,6 +35,7 @@
#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>
@@ -58,21 +55,19 @@
#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 {
@@ -119,14 +114,15 @@ static inline unsigned long aligned_rx_skb_addr(unsigned long addr)
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);
}
@@ -147,15 +143,11 @@ static inline unsigned long ioc3_map(void *ptr, unsigned long vdev)
}
/* 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)
@@ -176,7 +168,7 @@ static int nic_wait(u32 __iomem *mcr)
static int nic_reset(u32 __iomem *mcr)
{
- int presence;
+ int presence;
writel(mcr_pack(500, 65), mcr);
presence = nic_wait(mcr);
@@ -184,7 +176,7 @@ static int nic_reset(u32 __iomem *mcr)
writel(mcr_pack(0, 500), mcr);
nic_wait(mcr);
- return presence;
+ return presence;
}
static inline int nic_read_bit(u32 __iomem *mcr)
@@ -209,8 +201,7 @@ static inline void nic_write_bit(u32 __iomem *mcr, int bit)
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)
{
@@ -223,8 +214,7 @@ 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)
{
@@ -253,7 +243,7 @@ static u64 nic_find(u32 __iomem *mcr, int *last)
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;
}
@@ -264,8 +254,9 @@ static u64 nic_find(u32 __iomem *mcr, int *last)
} 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 {
@@ -293,6 +284,7 @@ static int nic_init(u32 __iomem *mcr)
while (1) {
u64 reg;
+
reg = nic_find(mcr, &save);
switch (reg & 0xff) {
@@ -323,16 +315,15 @@ static int nic_init(u32 __iomem *mcr)
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)
@@ -351,7 +342,7 @@ 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;
}
@@ -367,8 +358,7 @@ static void ioc3_get_eaddr_nic(struct ioc3_private *ip)
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 ...
*/
@@ -376,7 +366,7 @@ static void ioc3_get_eaddr(struct ioc3_private *ip)
{
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)
@@ -407,8 +397,7 @@ static int ioc3_set_mac_address(struct net_device *dev, void *addr)
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)
@@ -450,17 +439,16 @@ static struct net_device_stats *ioc3_get_stats(struct net_device *dev)
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.
@@ -476,7 +464,7 @@ static void ioc3_tcpudp_checksum(struct sk_buff *skb, uint32_t hwsum, int len)
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;
@@ -487,12 +475,12 @@ static void ioc3_tcpudp_checksum(struct sk_buff *skb, uint32_t hwsum, int len)
/* 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);
@@ -501,14 +489,15 @@ static void ioc3_tcpudp_checksum(struct sk_buff *skb, uint32_t hwsum, int len)
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);
@@ -532,7 +521,7 @@ static inline void ioc3_rx(struct net_device *dev)
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) {
@@ -545,7 +534,8 @@ static inline void ioc3_rx(struct net_device *dev)
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;
@@ -553,7 +543,8 @@ static inline void ioc3_rx(struct net_device *dev)
if (likely(dev->features & NETIF_F_RXCSUM))
ioc3_tcpudp_checksum(skb,
- w0 & ERXBUF_IPCKSUM_MASK, len);
+ w0 & ERXBUF_IPCKSUM_MASK,
+ len);
netif_rx(skb);
@@ -561,15 +552,16 @@ static inline void ioc3_rx(struct net_device *dev)
/* 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++;
}
@@ -586,7 +578,7 @@ static inline void ioc3_rx(struct net_device *dev)
/* 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);
@@ -635,8 +627,7 @@ static inline void ioc3_tx(struct net_device *dev)
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
@@ -645,22 +636,21 @@ static inline void ioc3_tx(struct net_device *dev)
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);
@@ -672,7 +662,8 @@ static void ioc3_error(struct net_device *dev, u32 eisr)
}
/* 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);
@@ -684,7 +675,7 @@ static irqreturn_t ioc3_interrupt(int irq, void *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);
@@ -716,12 +707,11 @@ static void ioc3_timer(struct timer_list *t)
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
@@ -730,8 +720,8 @@ static void ioc3_timer(struct timer_list *t)
*/
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++) {
@@ -744,9 +734,9 @@ static int ioc3_mii_init(struct ioc3_private *ip)
}
if (!found) {
- if (ioc3_phy_workaround)
+ if (ioc3_phy_workaround) {
i = 31;
- else {
+ } else {
ip->mii.phy_id = -1;
res = -ENODEV;
goto out;
@@ -761,12 +751,13 @@ static int ioc3_mii_init(struct ioc3_private *ip)
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;
@@ -777,10 +768,9 @@ static inline void ioc3_clean_rx_ring(struct ioc3_private *ip)
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;
}
}
@@ -790,7 +780,7 @@ static inline void ioc3_clean_tx_ring(struct ioc3_private *ip)
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;
@@ -836,16 +826,17 @@ static void ioc3_alloc_rings(struct net_device *dev)
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;
@@ -859,7 +850,7 @@ static void ioc3_alloc_rings(struct net_device *dev)
/* 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);
}
@@ -867,11 +858,11 @@ static void ioc3_alloc_rings(struct net_device *dev)
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;
}
@@ -964,7 +955,7 @@ static void ioc3_init(struct net_device *dev)
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 |
@@ -986,7 +977,7 @@ static int ioc3_open(struct net_device *dev)
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;
}
@@ -1015,8 +1006,7 @@ static int ioc3_close(struct net_device *dev)
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
*
@@ -1033,7 +1023,7 @@ static int ioc3_adjacent_is_ioc3(struct pci_dev *pdev, int slot)
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);
}
@@ -1043,15 +1033,14 @@ static int ioc3_adjacent_is_ioc3(struct pci_dev *pdev, int slot)
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()).
@@ -1088,16 +1077,16 @@ static void ioc3_8250_register(struct ioc3_uartregs __iomem *uart)
#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;
@@ -1113,8 +1102,7 @@ static void ioc3_serial_probe(struct pci_dev *pdev, struct ioc3 *ioc3)
{
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
@@ -1125,8 +1113,7 @@ static void ioc3_serial_probe(struct pci_dev *pdev, struct ioc3 *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);
@@ -1188,15 +1175,15 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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;
@@ -1227,9 +1214,9 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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;
@@ -1259,7 +1246,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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;
@@ -1289,10 +1276,10 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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;
@@ -1305,8 +1292,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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:
@@ -1324,8 +1310,7 @@ static void ioc3_remove_one(struct pci_dev *pdev)
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 ...
*/
}
@@ -1349,11 +1334,10 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
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
@@ -1364,12 +1348,13 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
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];
@@ -1379,10 +1364,11 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
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);
@@ -1402,7 +1388,7 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
spin_lock_irq(&ip->ioc3_lock);
- data = (unsigned long) skb->data;
+ data = (unsigned long)skb->data;
len = skb->len;
produce = ip->tx_pi;
@@ -1424,11 +1410,11 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
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);
@@ -1436,7 +1422,7 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
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;
@@ -1457,7 +1443,7 @@ static void ioc3_timeout(struct net_device *dev)
{
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);
@@ -1471,16 +1457,14 @@ static void ioc3_timeout(struct net_device *dev)
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);
@@ -1494,8 +1478,8 @@ static inline unsigned int ioc3_hash(const unsigned char *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);
@@ -1594,8 +1578,9 @@ static void ioc3_set_multicast_list(struct net_device *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 {
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 11/15] net: sgi: ioc3-eth: use dma-direct for dma allocations
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
Replace the homegrown DMA memory allocation, which only works on
SGI-IP27 machines, with the generic dma allocations.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 146 ++++++++++++++++++++++++++++--------
1 file changed, 114 insertions(+), 32 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 9cb04ac283e4..d62a75f2ed29 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -36,7 +36,6 @@
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
-#include <linux/dma-mapping.h>
#include <linux/gfp.h>
#ifdef CONFIG_SERIAL_8250
@@ -49,6 +48,8 @@
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>
+#include <linux/dma-direct.h>
+
#include <net/ip.h>
#include <asm/byteorder.h>
@@ -64,10 +65,12 @@
#define RX_BUFFS 64
#define RX_RING_ENTRIES 512 /* fixed in hardware */
#define RX_RING_MASK (RX_RING_ENTRIES - 1)
+#define RX_RING_SIZE (RX_RING_ENTRIES * sizeof(u64))
/* 128 TX buffers (not tunable) */
#define TX_RING_ENTRIES 128
#define TX_RING_MASK (TX_RING_ENTRIES - 1)
+#define TX_RING_SIZE (TX_RING_ENTRIES * sizeof(struct ioc3_etxd))
/* IOC3 does dma transfers in 128 byte blocks */
#define IOC3_DMA_XFER_LEN 128UL
@@ -83,9 +86,12 @@
struct ioc3_private {
struct ioc3_ethregs *regs;
struct ioc3 *all_regs;
+ struct device *dma_dev;
u32 *ssram;
unsigned long *rxr; /* pointer to receiver ring */
struct ioc3_etxd *txr;
+ dma_addr_t rxr_dma;
+ dma_addr_t txr_dma;
struct sk_buff *rx_skbs[RX_RING_ENTRIES];
struct sk_buff *tx_skbs[TX_RING_ENTRIES];
int rx_ci; /* RX consumer index */
@@ -125,9 +131,11 @@ static inline unsigned long aligned_rx_skb_addr(unsigned long addr)
return (~addr + 1) & (IOC3_DMA_XFER_LEN - 1UL);
}
-static inline int ioc3_alloc_skb(struct sk_buff **skb, struct ioc3_erxbuf **rxb)
+static inline int ioc3_alloc_skb(struct ioc3_private *ip, struct sk_buff **skb,
+ struct ioc3_erxbuf **rxb, dma_addr_t *rxb_dma)
{
struct sk_buff *new_skb;
+ dma_addr_t d;
int offset;
new_skb = alloc_skb(RX_BUF_SIZE + IOC3_DMA_XFER_LEN - 1, GFP_ATOMIC);
@@ -139,6 +147,14 @@ static inline int ioc3_alloc_skb(struct sk_buff **skb, struct ioc3_erxbuf **rxb)
if (offset)
skb_reserve(new_skb, offset);
+ d = dma_map_single(ip->dma_dev, new_skb->data,
+ RX_BUF_SIZE, DMA_FROM_DEVICE);
+
+ if (dma_mapping_error(ip->dma_dev, d)) {
+ dev_kfree_skb_any(new_skb);
+ return -ENOMEM;
+ }
+ *rxb_dma = d;
*rxb = (struct ioc3_erxbuf *)new_skb->data;
skb_reserve(new_skb, RX_OFFSET);
*skb = new_skb;
@@ -146,17 +162,22 @@ static inline int ioc3_alloc_skb(struct sk_buff **skb, struct ioc3_erxbuf **rxb)
return 0;
}
-static inline unsigned long ioc3_map(void *ptr, unsigned long vdev)
+#ifdef CONFIG_PCI_XTALK_BRIDGE
+static inline unsigned long ioc3_map(dma_addr_t addr, unsigned long attr)
{
-#ifdef CONFIG_SGI_IP27
- vdev <<= 57; /* Shift to PCI64_ATTR_VIRTUAL */
+ return (addr & ~PCI64_ATTR_BAR) | attr;
+}
- return vdev | (0xaUL << PCI64_ATTR_TARG_SHFT) | PCI64_ATTR_PREF |
- ((unsigned long)ptr & TO_PHYS_MASK);
+#define ERBAR_VAL (ERBAR_BARRIER_BIT << ERBAR_RXBARR_SHIFT)
#else
- return virt_to_bus(ptr);
-#endif
+static inline unsigned long ioc3_map(dma_addr_t addr, unsigned long attr)
+{
+ return addr;
}
+
+#define ERBAR_VAL 0
+#endif
+
#define IOC3_SIZE 0x100000
static inline u32 mcr_pack(u32 pulse, u32 sample)
@@ -523,6 +544,7 @@ static inline void ioc3_rx(struct net_device *dev)
int rx_entry, n_entry, len;
struct ioc3_erxbuf *rxb;
unsigned long *rxr;
+ dma_addr_t d;
u32 w0, err;
rxr = ip->rxr; /* Ring base */
@@ -540,12 +562,13 @@ static inline void ioc3_rx(struct net_device *dev)
skb_put(skb, len);
skb->protocol = eth_type_trans(skb, dev);
- if (ioc3_alloc_skb(&new_skb, &rxb)) {
+ if (ioc3_alloc_skb(ip, &new_skb, &rxb, &d)) {
/* Ouch, drop packet and just recycle packet
* to keep the ring filled.
*/
dev->stats.rx_dropped++;
new_skb = skb;
+ d = rxr[rx_entry];
goto next;
}
@@ -554,6 +577,9 @@ static inline void ioc3_rx(struct net_device *dev)
w0 & ERXBUF_IPCKSUM_MASK,
len);
+ dma_unmap_single(ip->dma_dev, rxr[rx_entry],
+ RX_BUF_SIZE, DMA_FROM_DEVICE);
+
netif_rx(skb);
ip->rx_skbs[rx_entry] = NULL; /* Poison */
@@ -566,15 +592,17 @@ static inline void ioc3_rx(struct net_device *dev)
* recycle it.
*/
new_skb = skb;
+ d = rxr[rx_entry];
dev->stats.rx_errors++;
}
if (err & ERXBUF_CRCERR) /* Statistics */
dev->stats.rx_crc_errors++;
if (err & ERXBUF_FRAMERR)
dev->stats.rx_frame_errors++;
+
next:
ip->rx_skbs[n_entry] = new_skb;
- rxr[n_entry] = cpu_to_be64(ioc3_map(rxb, 1));
+ rxr[n_entry] = cpu_to_be64(ioc3_map(d, PCI64_ATTR_BAR));
rxb->w0 = 0; /* Clear valid flag */
n_entry = (n_entry + 1) & RX_RING_MASK; /* Update erpir */
@@ -767,6 +795,26 @@ static void ioc3_mii_start(struct ioc3_private *ip)
add_timer(&ip->ioc3_timer);
}
+static inline void ioc3_tx_unmap(struct ioc3_private *ip, int entry)
+{
+ struct ioc3_etxd *desc;
+ u32 cmd, bufcnt, len;
+
+ desc = &ip->txr[entry];
+ cmd = be32_to_cpu(desc->cmd);
+ bufcnt = be32_to_cpu(desc->bufcnt);
+ if (cmd & ETXD_B1V) {
+ len = (bufcnt & ETXD_B1CNT_MASK) >> ETXD_B1CNT_SHIFT;
+ dma_unmap_single(ip->dma_dev, be64_to_cpu(desc->p1),
+ len, DMA_TO_DEVICE);
+ }
+ if (cmd & ETXD_B2V) {
+ len = (bufcnt & ETXD_B2CNT_MASK) >> ETXD_B2CNT_SHIFT;
+ dma_unmap_single(ip->dma_dev, be64_to_cpu(desc->p2),
+ len, DMA_TO_DEVICE);
+ }
+}
+
static inline void ioc3_clean_tx_ring(struct ioc3_private *ip)
{
struct sk_buff *skb;
@@ -775,6 +823,7 @@ static inline void ioc3_clean_tx_ring(struct ioc3_private *ip)
for (i = 0; i < TX_RING_ENTRIES; i++) {
skb = ip->tx_skbs[i];
if (skb) {
+ ioc3_tx_unmap(ip, i);
ip->tx_skbs[i] = NULL;
dev_kfree_skb_any(skb);
}
@@ -794,8 +843,12 @@ static void ioc3_free_rx_bufs(struct ioc3_private *ip)
while (n_entry != rx_entry) {
skb = ip->rx_skbs[n_entry];
- if (skb)
+ if (skb) {
+ dma_unmap_single(ip->dma_dev,
+ be64_to_cpu(ip->rxr[n_entry]),
+ RX_BUF_SIZE, DMA_FROM_DEVICE);
dev_kfree_skb_any(skb);
+ }
n_entry = (n_entry + 1) & RX_RING_MASK;
}
@@ -805,6 +858,7 @@ static int ioc3_alloc_rx_bufs(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
struct ioc3_erxbuf *rxb;
+ dma_addr_t d;
int i;
/* Now the rx buffers. The RX ring may be larger but
@@ -812,11 +866,11 @@ static int ioc3_alloc_rx_bufs(struct net_device *dev)
* this for performance and memory later.
*/
for (i = 0; i < RX_BUFFS; i++) {
- if (ioc3_alloc_skb(&ip->rx_skbs[i], &rxb))
+ if (ioc3_alloc_skb(ip, &ip->rx_skbs[i], &rxb, &d))
return -ENOMEM;
rxb->w0 = 0; /* Clear valid flag */
- ip->rxr[i] = cpu_to_be64(ioc3_map(rxb, 1));
+ ip->rxr[i] = cpu_to_be64(ioc3_map(d, PCI64_ATTR_BAR));
}
ip->rx_ci = 0;
ip->rx_pi = RX_BUFFS;
@@ -862,13 +916,7 @@ static void ioc3_init(struct net_device *dev)
readl(®s->emcr);
/* Misc registers */
-#ifdef CONFIG_SGI_IP27
- /* Barrier on last store */
- writel(PCI64_ATTR_BAR >> 32, ®s->erbar);
-#else
- /* Let PCI API get it right */
- writel(0, ®s->erbar);
-#endif
+ writel(ERBAR_VAL, ®s->erbar);
readl(®s->etcdc); /* Clear on read */
writel(15, ®s->ercsr); /* RX low watermark */
writel(0, ®s->ertr); /* Interrupt immediately */
@@ -884,13 +932,13 @@ static void ioc3_start(struct ioc3_private *ip)
unsigned long ring;
/* Now the rx ring base, consume & produce registers. */
- ring = ioc3_map(ip->rxr, 0);
+ ring = ioc3_map(ip->rxr_dma, PCI64_ATTR_PREC);
writel(ring >> 32, ®s->erbr_h);
writel(ring & 0xffffffff, ®s->erbr_l);
writel(ip->rx_ci << 3, ®s->ercir);
writel((ip->rx_pi << 3) | ERPIR_ARM, ®s->erpir);
- ring = ioc3_map(ip->txr, 0);
+ ring = ioc3_map(ip->txr_dma, PCI64_ATTR_PREC);
ip->txqlen = 0; /* nothing queued */
@@ -1164,6 +1212,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
ip = netdev_priv(dev);
ip->dev = dev;
+ ip->dma_dev = &pdev->dev;
dev->irq = pdev->irq;
@@ -1190,7 +1239,8 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
ioc3_stop(ip);
/* Allocate and rx ring. 4kb = 512 entries */
- ip->rxr = (unsigned long *)get_zeroed_page(GFP_ATOMIC);
+ ip->rxr = dma_direct_alloc_pages(ip->dma_dev, RX_RING_SIZE,
+ &ip->rxr_dma, GFP_ATOMIC, 0);
if (!ip->rxr) {
pr_err("ioc3-eth: rx ring allocation failed\n");
err = -ENOMEM;
@@ -1198,7 +1248,9 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
/* Allocate tx rings. 16kb = 128 bufs. */
- ip->txr = (struct ioc3_etxd *)__get_free_pages(GFP_KERNEL, 2);
+ ip->txr = dma_direct_alloc_pages(ip->dma_dev, TX_RING_SIZE,
+ &ip->txr_dma,
+ GFP_KERNEL | __GFP_ZERO, 0);
if (!ip->txr) {
pr_err("ioc3-eth: tx ring allocation failed\n");
err = -ENOMEM;
@@ -1257,8 +1309,12 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
out_stop:
del_timer_sync(&ip->ioc3_timer);
- kfree(ip->rxr);
- kfree(ip->txr);
+ if (ip->rxr)
+ dma_direct_free_pages(ip->dma_dev, RX_RING_SIZE, ip->rxr,
+ ip->rxr_dma, 0);
+ if (ip->txr)
+ dma_direct_free_pages(ip->dma_dev, TX_RING_SIZE, ip->txr,
+ ip->txr_dma, 0);
out_res:
pci_release_regions(pdev);
out_free:
@@ -1276,8 +1332,12 @@ static void ioc3_remove_one(struct pci_dev *pdev)
struct net_device *dev = pci_get_drvdata(pdev);
struct ioc3_private *ip = netdev_priv(dev);
- kfree(ip->rxr);
- kfree(ip->txr);
+ if (ip->rxr)
+ dma_direct_free_pages(ip->dma_dev, RX_RING_SIZE, ip->rxr,
+ ip->rxr_dma, 0);
+ if (ip->txr)
+ dma_direct_free_pages(ip->dma_dev, TX_RING_SIZE, ip->txr,
+ ip->txr_dma, 0);
unregister_netdev(dev);
del_timer_sync(&ip->ioc3_timer);
@@ -1383,18 +1443,32 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned long b2 = (data | 0x3fffUL) + 1UL;
unsigned long s1 = b2 - data;
unsigned long s2 = data + len - b2;
+ dma_addr_t d1, d2;
desc->cmd = cpu_to_be32(len | ETXD_INTWHENDONE |
ETXD_B1V | ETXD_B2V | w0);
desc->bufcnt = cpu_to_be32((s1 << ETXD_B1CNT_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));
+ d1 = dma_map_single(ip->dma_dev, skb->data, s1, DMA_TO_DEVICE);
+ if (dma_mapping_error(ip->dma_dev, d1))
+ goto drop_packet;
+ d2 = dma_map_single(ip->dma_dev, (void *)b2, s1, DMA_TO_DEVICE);
+ if (dma_mapping_error(ip->dma_dev, d2)) {
+ dma_unmap_single(ip->dma_dev, d1, len, DMA_TO_DEVICE);
+ goto drop_packet;
+ }
+ desc->p1 = cpu_to_be64(ioc3_map(d1, PCI64_ATTR_PREF));
+ desc->p2 = cpu_to_be64(ioc3_map(d2, PCI64_ATTR_PREF));
} else {
+ dma_addr_t d;
+
/* Normal sized packet that doesn't cross a page boundary. */
desc->cmd = cpu_to_be32(len | ETXD_INTWHENDONE | ETXD_B1V | w0);
desc->bufcnt = cpu_to_be32(len << ETXD_B1CNT_SHIFT);
- desc->p1 = cpu_to_be64(ioc3_map(skb->data, 1));
+ d = dma_map_single(ip->dma_dev, skb->data, len, DMA_TO_DEVICE);
+ if (dma_mapping_error(ip->dma_dev, d))
+ goto drop_packet;
+ desc->p1 = cpu_to_be64(ioc3_map(d, PCI64_ATTR_PREF));
}
mb(); /* make sure all descriptor changes are visible */
@@ -1412,6 +1486,14 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
spin_unlock_irq(&ip->ioc3_lock);
return NETDEV_TX_OK;
+
+drop_packet:
+ dev_kfree_skb_any(skb);
+ dev->stats.tx_dropped++;
+
+ spin_unlock_irq(&ip->ioc3_lock);
+
+ return NETDEV_TX_OK;
}
static void ioc3_timeout(struct net_device *dev)
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 12/15] net: sgi: ioc3-eth: use csum_fold
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
replace open coded checksum folding by csum_fold.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index d62a75f2ed29..0c2713bba741 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -1394,16 +1394,12 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Sum up dest addr, src addr and protocol */
ehsum = eh[0] + eh[1] + eh[2] + eh[3] + eh[4] + eh[5] + eh[6];
- /* Fold ehsum. can't use csum_fold which negates also ... */
- ehsum = (ehsum & 0xffff) + (ehsum >> 16);
- ehsum = (ehsum & 0xffff) + (ehsum >> 16);
-
/* Skip IP header; it's sum is always zero and was
* already filled in by ip_output.c
*/
csum = csum_tcpudp_nofold(ih->saddr, ih->daddr,
ih->tot_len - (ih->ihl << 2),
- proto, 0xffff ^ ehsum);
+ proto, csum_fold(ehsum));
csum = (csum & 0xffff) + (csum >> 16); /* Fold again */
csum = (csum & 0xffff) + (csum >> 16);
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 10/15] net: sgi: ioc3-eth: refactor rx buffer allocation
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
Move common code for rx buffer setup into ioc3_alloc_skb and deal
with allocation failures. Also clean up allocation size calculation.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 95 ++++++++++++++++++-------------------
1 file changed, 45 insertions(+), 50 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 7d2372ef7872..9cb04ac283e4 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -11,11 +11,8 @@
*
* To do:
*
- * o Handle allocation failures in ioc3_alloc_skb() more gracefully.
- * o Handle allocation failures in ioc3_init_rings().
* o Use prefetching for large packets. What is a good lower limit for
* prefetching?
- * o We're probably allocating a bit too much memory.
* o Use hardware checksums.
* o Convert to using a IOC3 meta driver.
* o Which PHYs might possibly be attached to the IOC3 in real live,
@@ -72,6 +69,13 @@
#define TX_RING_ENTRIES 128
#define TX_RING_MASK (TX_RING_ENTRIES - 1)
+/* IOC3 does dma transfers in 128 byte blocks */
+#define IOC3_DMA_XFER_LEN 128UL
+
+/* Every RX buffer starts with 8 byte descriptor data */
+#define RX_OFFSET (sizeof(struct ioc3_erxbuf) + NET_IP_ALIGN)
+#define RX_BUF_SIZE (13 * IOC3_DMA_XFER_LEN)
+
#define ETCSR_FD ((17 << ETCSR_IPGR2_SHIFT) | (11 << ETCSR_IPGR1_SHIFT) | 21)
#define ETCSR_HD ((21 << ETCSR_IPGR2_SHIFT) | (21 << ETCSR_IPGR1_SHIFT) | 21)
@@ -108,36 +112,38 @@ static inline unsigned int ioc3_hash(const unsigned char *addr);
static void ioc3_start(struct ioc3_private *ip);
static inline void ioc3_stop(struct ioc3_private *ip);
static void ioc3_init(struct net_device *dev);
-static void ioc3_alloc_rx_bufs(struct net_device *dev);
+static int ioc3_alloc_rx_bufs(struct net_device *dev);
static void ioc3_free_rx_bufs(struct ioc3_private *ip);
static inline void ioc3_clean_tx_ring(struct ioc3_private *ip);
static const char ioc3_str[] = "IOC3 Ethernet";
static const struct ethtool_ops ioc3_ethtool_ops;
-/* We use this to acquire receive skb's that we can DMA directly into. */
-
-#define IOC3_CACHELINE 128UL
static inline unsigned long aligned_rx_skb_addr(unsigned long addr)
{
- return (~addr + 1) & (IOC3_CACHELINE - 1UL);
+ return (~addr + 1) & (IOC3_DMA_XFER_LEN - 1UL);
}
-static inline struct sk_buff *ioc3_alloc_skb(unsigned long length,
- unsigned int gfp_mask)
+static inline int ioc3_alloc_skb(struct sk_buff **skb, struct ioc3_erxbuf **rxb)
{
- struct sk_buff *skb;
+ struct sk_buff *new_skb;
+ int offset;
- skb = alloc_skb(length + IOC3_CACHELINE - 1, gfp_mask);
- if (likely(skb)) {
- int offset = aligned_rx_skb_addr((unsigned long)skb->data);
+ new_skb = alloc_skb(RX_BUF_SIZE + IOC3_DMA_XFER_LEN - 1, GFP_ATOMIC);
+ if (!new_skb)
+ return -ENOMEM;
- if (offset)
- skb_reserve(skb, offset);
- }
+ /* ensure buffer is aligned to IOC3_DMA_XFER_LEN */
+ offset = aligned_rx_skb_addr((unsigned long)new_skb->data);
+ if (offset)
+ skb_reserve(new_skb, offset);
+
+ *rxb = (struct ioc3_erxbuf *)new_skb->data;
+ skb_reserve(new_skb, RX_OFFSET);
+ *skb = new_skb;
- return skb;
+ return 0;
}
static inline unsigned long ioc3_map(void *ptr, unsigned long vdev)
@@ -151,13 +157,6 @@ static inline unsigned long ioc3_map(void *ptr, unsigned long vdev)
return virt_to_bus(ptr);
#endif
}
-
-/* BEWARE: The IOC3 documentation documents the size of rx buffers as
- * 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)
-
#define IOC3_SIZE 0x100000
static inline u32 mcr_pack(u32 pulse, u32 sample)
@@ -538,11 +537,10 @@ static inline void ioc3_rx(struct net_device *dev)
err = be32_to_cpu(rxb->err); /* It's valid ... */
if (err & ERXBUF_GOODPKT) {
len = ((w0 >> ERXBUF_BYTECNT_SHIFT) & 0x7ff) - 4;
- skb_trim(skb, len);
+ skb_put(skb, len);
skb->protocol = eth_type_trans(skb, dev);
- new_skb = ioc3_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
- if (!new_skb) {
+ if (ioc3_alloc_skb(&new_skb, &rxb)) {
/* Ouch, drop packet and just recycle packet
* to keep the ring filled.
*/
@@ -560,11 +558,6 @@ static inline void ioc3_rx(struct net_device *dev)
ip->rx_skbs[rx_entry] = NULL; /* Poison */
- /* Because we reserve afterwards. */
- skb_put(new_skb, (1664 + RX_OFFSET));
- rxb = (struct ioc3_erxbuf *)new_skb->data;
- skb_reserve(new_skb, RX_OFFSET);
-
dev->stats.rx_packets++; /* Statistics */
dev->stats.rx_bytes += len;
} else {
@@ -667,7 +660,11 @@ static void ioc3_error(struct net_device *dev, u32 eisr)
ioc3_clean_tx_ring(ip);
ioc3_init(dev);
- ioc3_alloc_rx_bufs(dev);
+ if (ioc3_alloc_rx_bufs(dev)) {
+ netdev_err(dev, "%s: rx buffer allocation failed\n", __func__);
+ spin_unlock(&ip->ioc3_lock);
+ return;
+ }
ioc3_start(ip);
ioc3_mii_init(ip);
@@ -804,7 +801,7 @@ static void ioc3_free_rx_bufs(struct ioc3_private *ip)
}
}
-static void ioc3_alloc_rx_bufs(struct net_device *dev)
+static int ioc3_alloc_rx_bufs(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
struct ioc3_erxbuf *rxb;
@@ -815,25 +812,16 @@ static void ioc3_alloc_rx_bufs(struct net_device *dev)
* this for performance and memory later.
*/
for (i = 0; i < RX_BUFFS; i++) {
- struct sk_buff *skb;
-
- skb = ioc3_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
- if (!skb) {
- show_free_areas(0, NULL);
- continue;
- }
-
- ip->rx_skbs[i] = skb;
+ if (ioc3_alloc_skb(&ip->rx_skbs[i], &rxb))
+ return -ENOMEM;
- /* Because we reserve afterwards. */
- skb_put(skb, (1664 + RX_OFFSET));
- rxb = (struct ioc3_erxbuf *)skb->data;
rxb->w0 = 0; /* Clear valid flag */
ip->rxr[i] = cpu_to_be64(ioc3_map(rxb, 1));
- skb_reserve(skb, RX_OFFSET);
}
ip->rx_ci = 0;
ip->rx_pi = RX_BUFFS;
+
+ return 0;
}
static inline void ioc3_ssram_disc(struct ioc3_private *ip)
@@ -945,7 +933,10 @@ static int ioc3_open(struct net_device *dev)
ip->ehar_l = 0;
ioc3_init(dev);
- ioc3_alloc_rx_bufs(dev);
+ if (ioc3_alloc_rx_bufs(dev)) {
+ netdev_err(dev, "%s: rx buffer allocation failed\n", __func__);
+ return -ENOMEM;
+ }
ioc3_start(ip);
ioc3_mii_start(ip);
@@ -1436,7 +1427,11 @@ static void ioc3_timeout(struct net_device *dev)
ioc3_clean_tx_ring(ip);
ioc3_init(dev);
- ioc3_alloc_rx_bufs(dev);
+ if (ioc3_alloc_rx_bufs(dev)) {
+ netdev_err(dev, "%s: rx buffer allocation failed\n", __func__);
+ spin_unlock_irq(&ip->ioc3_lock);
+ return;
+ }
ioc3_start(ip);
ioc3_mii_init(ip);
ioc3_mii_start(ip);
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 02/15] MIPS: SGI-IP27: restructure ioc3 register access
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
Break up the big ioc3 register struct into functional pieces to
make use in sub-function drivers more straightforward. And while
doing that get rid of all volatile access by using readX/writeX.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
arch/mips/include/asm/sn/ioc3.h | 357 ++++++++++++------------------
arch/mips/sgi-ip27/ip27-console.c | 5 +-
drivers/net/ethernet/sgi/ioc3-eth.c | 418 ++++++++++++++++--------------------
3 files changed, 331 insertions(+), 449 deletions(-)
diff --git a/arch/mips/include/asm/sn/ioc3.h b/arch/mips/include/asm/sn/ioc3.h
index 25c8dccab51f..a947eed48fee 100644
--- a/arch/mips/include/asm/sn/ioc3.h
+++ b/arch/mips/include/asm/sn/ioc3.h
@@ -3,169 +3,161 @@
* Copyright (C) 1999, 2000 Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
-#ifndef _IOC3_H
-#define _IOC3_H
+#ifndef MIPS_SN_IOC3_H
+#define MIPS_SN_IOC3_H
#include <linux/types.h>
+/* serial port register map */
+struct ioc3_serialregs {
+ u32 sscr;
+ u32 stpir;
+ u32 stcir;
+ u32 srpir;
+ u32 srcir;
+ u32 srtr;
+ u32 shadow;
+};
+
/* SUPERIO uart register map */
-typedef volatile struct ioc3_uartregs {
+struct ioc3_uartregs {
union {
- volatile u8 rbr; /* read only, DLAB == 0 */
- volatile u8 thr; /* write only, DLAB == 0 */
- volatile u8 dll; /* DLAB == 1 */
- } u1;
+ u8 iu_rbr; /* read only, DLAB == 0 */
+ u8 iu_thr; /* write only, DLAB == 0 */
+ u8 iu_dll; /* DLAB == 1 */
+ };
union {
- volatile u8 ier; /* DLAB == 0 */
- volatile u8 dlm; /* DLAB == 1 */
- } u2;
+ u8 iu_ier; /* DLAB == 0 */
+ u8 iu_dlm; /* DLAB == 1 */
+ };
union {
- volatile u8 iir; /* read only */
- volatile u8 fcr; /* write only */
- } u3;
- volatile u8 iu_lcr;
- volatile u8 iu_mcr;
- volatile u8 iu_lsr;
- volatile u8 iu_msr;
- volatile u8 iu_scr;
-} ioc3_uregs_t;
-
-#define iu_rbr u1.rbr
-#define iu_thr u1.thr
-#define iu_dll u1.dll
-#define iu_ier u2.ier
-#define iu_dlm u2.dlm
-#define iu_iir u3.iir
-#define iu_fcr u3.fcr
+ u8 iu_iir; /* read only */
+ u8 iu_fcr; /* write only */
+ };
+ u8 iu_lcr;
+ u8 iu_mcr;
+ u8 iu_lsr;
+ u8 iu_msr;
+ u8 iu_scr;
+};
struct ioc3_sioregs {
- volatile u8 fill[0x141]; /* starts at 0x141 */
+ u8 fill[0x141]; /* starts at 0x141 */
- volatile u8 uartc;
- volatile u8 kbdcg;
+ u8 uartc;
+ u8 kbdcg;
- volatile u8 fill0[0x150 - 0x142 - 1];
+ u8 fill0[0x150 - 0x142 - 1];
- volatile u8 pp_data;
- volatile u8 pp_dsr;
- volatile u8 pp_dcr;
+ u8 pp_data;
+ u8 pp_dsr;
+ u8 pp_dcr;
- volatile u8 fill1[0x158 - 0x152 - 1];
+ u8 fill1[0x158 - 0x152 - 1];
- volatile u8 pp_fifa;
- volatile u8 pp_cfgb;
- volatile u8 pp_ecr;
+ u8 pp_fifa;
+ u8 pp_cfgb;
+ u8 pp_ecr;
- volatile u8 fill2[0x168 - 0x15a - 1];
+ u8 fill2[0x168 - 0x15a - 1];
- volatile u8 rtcad;
- volatile u8 rtcdat;
+ u8 rtcad;
+ u8 rtcdat;
- volatile u8 fill3[0x170 - 0x169 - 1];
+ u8 fill3[0x170 - 0x169 - 1];
struct ioc3_uartregs uartb; /* 0x20170 */
struct ioc3_uartregs uarta; /* 0x20178 */
};
+struct ioc3_ethregs {
+ u32 emcr; /* 0x000f0 */
+ u32 eisr; /* 0x000f4 */
+ u32 eier; /* 0x000f8 */
+ u32 ercsr; /* 0x000fc */
+ u32 erbr_h; /* 0x00100 */
+ u32 erbr_l; /* 0x00104 */
+ u32 erbar; /* 0x00108 */
+ u32 ercir; /* 0x0010c */
+ u32 erpir; /* 0x00110 */
+ u32 ertr; /* 0x00114 */
+ u32 etcsr; /* 0x00118 */
+ u32 ersr; /* 0x0011c */
+ u32 etcdc; /* 0x00120 */
+ u32 ebir; /* 0x00124 */
+ u32 etbr_h; /* 0x00128 */
+ u32 etbr_l; /* 0x0012c */
+ u32 etcir; /* 0x00130 */
+ u32 etpir; /* 0x00134 */
+ u32 emar_h; /* 0x00138 */
+ u32 emar_l; /* 0x0013c */
+ u32 ehar_h; /* 0x00140 */
+ u32 ehar_l; /* 0x00144 */
+ u32 micr; /* 0x00148 */
+ u32 midr_r; /* 0x0014c */
+ u32 midr_w; /* 0x00150 */
+};
+
+struct ioc3_serioregs {
+ u32 km_csr; /* 0x0009c */
+ u32 k_rd; /* 0x000a0 */
+ u32 m_rd; /* 0x000a4 */
+ u32 k_wd; /* 0x000a8 */
+ u32 m_wd; /* 0x000ac */
+};
+
/* Register layout of IOC3 in configuration space. */
struct ioc3 {
- volatile u32 pad0[7]; /* 0x00000 */
- volatile u32 sio_ir; /* 0x0001c */
- volatile u32 sio_ies; /* 0x00020 */
- volatile u32 sio_iec; /* 0x00024 */
- volatile u32 sio_cr; /* 0x00028 */
- volatile u32 int_out; /* 0x0002c */
- volatile u32 mcr; /* 0x00030 */
+ /* PCI Config Space registers */
+ u32 pci_id; /* 0x00000 */
+ u32 pci_scr; /* 0x00004 */
+ u32 pci_rev; /* 0x00008 */
+ u32 pci_lat; /* 0x0000c */
+ u32 pci_addr; /* 0x00010 */
+ u32 pci_err_addr_l; /* 0x00014 */
+ u32 pci_err_addr_h; /* 0x00018 */
+
+ u32 sio_ir; /* 0x0001c */
+ u32 sio_ies; /* 0x00020 */
+ u32 sio_iec; /* 0x00024 */
+ u32 sio_cr; /* 0x00028 */
+ u32 int_out; /* 0x0002c */
+ u32 mcr; /* 0x00030 */
/* General Purpose I/O registers */
- volatile u32 gpcr_s; /* 0x00034 */
- volatile u32 gpcr_c; /* 0x00038 */
- volatile u32 gpdr; /* 0x0003c */
- volatile u32 gppr_0; /* 0x00040 */
- volatile u32 gppr_1; /* 0x00044 */
- volatile u32 gppr_2; /* 0x00048 */
- volatile u32 gppr_3; /* 0x0004c */
- volatile u32 gppr_4; /* 0x00050 */
- volatile u32 gppr_5; /* 0x00054 */
- volatile u32 gppr_6; /* 0x00058 */
- volatile u32 gppr_7; /* 0x0005c */
- volatile u32 gppr_8; /* 0x00060 */
- volatile u32 gppr_9; /* 0x00064 */
- volatile u32 gppr_10; /* 0x00068 */
- volatile u32 gppr_11; /* 0x0006c */
- volatile u32 gppr_12; /* 0x00070 */
- volatile u32 gppr_13; /* 0x00074 */
- volatile u32 gppr_14; /* 0x00078 */
- volatile u32 gppr_15; /* 0x0007c */
+ u32 gpcr_s; /* 0x00034 */
+ u32 gpcr_c; /* 0x00038 */
+ u32 gpdr; /* 0x0003c */
+ u32 gppr[16]; /* 0x00040 */
/* Parallel Port Registers */
- volatile u32 ppbr_h_a; /* 0x00080 */
- volatile u32 ppbr_l_a; /* 0x00084 */
- volatile u32 ppcr_a; /* 0x00088 */
- volatile u32 ppcr; /* 0x0008c */
- volatile u32 ppbr_h_b; /* 0x00090 */
- volatile u32 ppbr_l_b; /* 0x00094 */
- volatile u32 ppcr_b; /* 0x00098 */
+ u32 ppbr_h_a; /* 0x00080 */
+ u32 ppbr_l_a; /* 0x00084 */
+ u32 ppcr_a; /* 0x00088 */
+ u32 ppcr; /* 0x0008c */
+ u32 ppbr_h_b; /* 0x00090 */
+ u32 ppbr_l_b; /* 0x00094 */
+ u32 ppcr_b; /* 0x00098 */
/* Keyboard and Mouse Registers */
- volatile u32 km_csr; /* 0x0009c */
- volatile u32 k_rd; /* 0x000a0 */
- volatile u32 m_rd; /* 0x000a4 */
- volatile u32 k_wd; /* 0x000a8 */
- volatile u32 m_wd; /* 0x000ac */
+ struct ioc3_serioregs serio;
/* Serial Port Registers */
- volatile u32 sbbr_h; /* 0x000b0 */
- volatile u32 sbbr_l; /* 0x000b4 */
- volatile u32 sscr_a; /* 0x000b8 */
- volatile u32 stpir_a; /* 0x000bc */
- volatile u32 stcir_a; /* 0x000c0 */
- volatile u32 srpir_a; /* 0x000c4 */
- volatile u32 srcir_a; /* 0x000c8 */
- volatile u32 srtr_a; /* 0x000cc */
- volatile u32 shadow_a; /* 0x000d0 */
- volatile u32 sscr_b; /* 0x000d4 */
- volatile u32 stpir_b; /* 0x000d8 */
- volatile u32 stcir_b; /* 0x000dc */
- volatile u32 srpir_b; /* 0x000e0 */
- volatile u32 srcir_b; /* 0x000e4 */
- volatile u32 srtr_b; /* 0x000e8 */
- volatile u32 shadow_b; /* 0x000ec */
-
- /* Ethernet Registers */
- volatile u32 emcr; /* 0x000f0 */
- volatile u32 eisr; /* 0x000f4 */
- volatile u32 eier; /* 0x000f8 */
- volatile u32 ercsr; /* 0x000fc */
- volatile u32 erbr_h; /* 0x00100 */
- volatile u32 erbr_l; /* 0x00104 */
- volatile u32 erbar; /* 0x00108 */
- volatile u32 ercir; /* 0x0010c */
- volatile u32 erpir; /* 0x00110 */
- volatile u32 ertr; /* 0x00114 */
- volatile u32 etcsr; /* 0x00118 */
- volatile u32 ersr; /* 0x0011c */
- volatile u32 etcdc; /* 0x00120 */
- volatile u32 ebir; /* 0x00124 */
- volatile u32 etbr_h; /* 0x00128 */
- volatile u32 etbr_l; /* 0x0012c */
- volatile u32 etcir; /* 0x00130 */
- volatile u32 etpir; /* 0x00134 */
- volatile u32 emar_h; /* 0x00138 */
- volatile u32 emar_l; /* 0x0013c */
- volatile u32 ehar_h; /* 0x00140 */
- volatile u32 ehar_l; /* 0x00144 */
- volatile u32 micr; /* 0x00148 */
- volatile u32 midr_r; /* 0x0014c */
- volatile u32 midr_w; /* 0x00150 */
- volatile u32 pad1[(0x20000 - 0x00154) / 4];
+ u32 sbbr_h; /* 0x000b0 */
+ u32 sbbr_l; /* 0x000b4 */
+ struct ioc3_serialregs port_a;
+ struct ioc3_serialregs port_b;
+
+ /* Ethernet Registers */
+ struct ioc3_ethregs eth;
+ u32 pad1[(0x20000 - 0x00154) / 4];
/* SuperIO Registers XXX */
struct ioc3_sioregs sregs; /* 0x20000 */
- volatile u32 pad2[(0x40000 - 0x20180) / 4];
+ u32 pad2[(0x40000 - 0x20180) / 4];
/* SSRAM Diagnostic Access */
- volatile u32 ssram[(0x80000 - 0x40000) / 4];
+ u32 ssram[(0x80000 - 0x40000) / 4];
/* Bytebus device offsets
0x80000 - Access to the generic devices selected with DEV0
@@ -178,6 +170,20 @@ struct ioc3 {
0xFFFFF bytebus DEV_SEL_3 */
};
+
+#define PCI_LAT 0xc /* Latency Timer */
+#define PCI_SCR_DROP_MODE_EN 0x00008000 /* drop pios on parity err */
+#define UARTA_BASE 0x178
+#define UARTB_BASE 0x170
+
+/*
+ * Bytebus device space
+ */
+#define IOC3_BYTEBUS_DEV0 0x80000L
+#define IOC3_BYTEBUS_DEV1 0xa0000L
+#define IOC3_BYTEBUS_DEV2 0xc0000L
+#define IOC3_BYTEBUS_DEV3 0xe0000L
+
/*
* Ethernet RX Buffer
*/
@@ -233,28 +239,20 @@ struct ioc3_etxd {
#define ETXD_B2CNT_MASK 0x7ff00000
#define ETXD_B2CNT_SHIFT 20
-/*
- * Bytebus device space
- */
-#define IOC3_BYTEBUS_DEV0 0x80000L
-#define IOC3_BYTEBUS_DEV1 0xa0000L
-#define IOC3_BYTEBUS_DEV2 0xc0000L
-#define IOC3_BYTEBUS_DEV3 0xe0000L
-
/* ------------------------------------------------------------------------- */
/* Superio Registers (PIO Access) */
#define IOC3_SIO_BASE 0x20000
#define IOC3_SIO_UARTC (IOC3_SIO_BASE+0x141) /* UART Config */
#define IOC3_SIO_KBDCG (IOC3_SIO_BASE+0x142) /* KBD Config */
-#define IOC3_SIO_PP_BASE (IOC3_SIO_BASE+PP_BASE) /* Parallel Port */
+#define IOC3_SIO_PP_BASE (IOC3_SIO_BASE+PP_BASE) /* Parallel Port */
#define IOC3_SIO_RTC_BASE (IOC3_SIO_BASE+0x168) /* Real Time Clock */
#define IOC3_SIO_UB_BASE (IOC3_SIO_BASE+UARTB_BASE) /* UART B */
#define IOC3_SIO_UA_BASE (IOC3_SIO_BASE+UARTA_BASE) /* UART A */
/* SSRAM Diagnostic Access */
#define IOC3_SSRAM IOC3_RAM_OFF /* base of SSRAM diagnostic access */
-#define IOC3_SSRAM_LEN 0x40000 /* 256kb (address space size, may not be fully populated) */
+#define IOC3_SSRAM_LEN 0x40000 /* 256kb (addrspc sz, may not be populated) */
#define IOC3_SSRAM_DM 0x0000ffff /* data mask */
#define IOC3_SSRAM_PM 0x00010000 /* parity mask */
@@ -294,10 +292,10 @@ struct ioc3_etxd {
SIO_IR to assert */
#define KM_CSR_M_TO_EN 0x00080000 /* KM_CSR_M_TO + KM_CSR_M_TO_EN = cause
SIO_IR to assert */
-#define KM_CSR_K_CLAMP_ONE 0x00100000 /* Pull K_CLK low after rec. one char */
-#define KM_CSR_M_CLAMP_ONE 0x00200000 /* Pull M_CLK low after rec. one char */
-#define KM_CSR_K_CLAMP_THREE 0x00400000 /* Pull K_CLK low after rec. three chars */
-#define KM_CSR_M_CLAMP_THREE 0x00800000 /* Pull M_CLK low after rec. three char */
+#define KM_CSR_K_CLAMP_1 0x00100000 /* Pull K_CLK low aft recv 1 char */
+#define KM_CSR_M_CLAMP_1 0x00200000 /* Pull M_CLK low aft recv 1 char */
+#define KM_CSR_K_CLAMP_3 0x00400000 /* Pull K_CLK low aft recv 3 chars */
+#define KM_CSR_M_CLAMP_3 0x00800000 /* Pull M_CLK low aft recv 3 chars */
/* bitmasks for IOC3_K_RD and IOC3_M_RD */
#define KM_RD_DATA_2 0x000000ff /* 3rd char recvd since last read */
@@ -440,10 +438,6 @@ struct ioc3_etxd {
SIO_IR_PP_INTB | SIO_IR_PP_MEMERR)
#define SIO_IR_RT (SIO_IR_RT_INT | SIO_IR_GEN_INT1)
-/* macro to load pending interrupts */
-#define IOC3_PENDING_INTRS(mem) (PCI_INW(&((mem)->sio_ir)) & \
- PCI_INW(&((mem)->sio_ies_ro)))
-
/* bitmasks for SIO_CR */
#define SIO_CR_SIO_RESET 0x00000001 /* reset the SIO */
#define SIO_CR_SER_A_BASE 0x000000fe /* DMA poll addr port A */
@@ -500,10 +494,11 @@ struct ioc3_etxd {
#define GPCR_UARTB_MODESEL 0x40 /* pin is output to port B mode sel */
#define GPCR_UARTA_MODESEL 0x80 /* pin is output to port A mode sel */
-#define GPPR_PHY_RESET_PIN 5 /* GIO pin controlling phy reset */
-#define GPPR_UARTB_MODESEL_PIN 6 /* GIO pin controlling uart b mode select */
-#define GPPR_UARTA_MODESEL_PIN 7 /* GIO pin controlling uart a mode select */
+#define GPPR_PHY_RESET_PIN 5 /* GIO pin cntrlling phy reset */
+#define GPPR_UARTB_MODESEL_PIN 6 /* GIO pin cntrlling uart b mode sel */
+#define GPPR_UARTA_MODESEL_PIN 7 /* GIO pin cntrlling uart a mode sel */
+/* ethernet */
#define EMCR_DUPLEX 0x00000001
#define EMCR_PROMISC 0x00000002
#define EMCR_PADEN 0x00000004
@@ -595,70 +590,4 @@ struct ioc3_etxd {
#define MIDR_DATA_MASK 0x0000ffff
-#define ERXBUF_IPCKSUM_MASK 0x0000ffff
-#define ERXBUF_BYTECNT_MASK 0x07ff0000
-#define ERXBUF_BYTECNT_SHIFT 16
-#define ERXBUF_V 0x80000000
-
-#define ERXBUF_CRCERR 0x00000001 /* aka RSV15 */
-#define ERXBUF_FRAMERR 0x00000002 /* aka RSV14 */
-#define ERXBUF_CODERR 0x00000004 /* aka RSV13 */
-#define ERXBUF_INVPREAMB 0x00000008 /* aka RSV18 */
-#define ERXBUF_LOLEN 0x00007000 /* aka RSV2_0 */
-#define ERXBUF_HILEN 0x03ff0000 /* aka RSV12_3 */
-#define ERXBUF_MULTICAST 0x04000000 /* aka RSV16 */
-#define ERXBUF_BROADCAST 0x08000000 /* aka RSV17 */
-#define ERXBUF_LONGEVENT 0x10000000 /* aka RSV19 */
-#define ERXBUF_BADPKT 0x20000000 /* aka RSV20 */
-#define ERXBUF_GOODPKT 0x40000000 /* aka RSV21 */
-#define ERXBUF_CARRIER 0x80000000 /* aka RSV22 */
-
-#define ETXD_BYTECNT_MASK 0x000007ff /* total byte count */
-#define ETXD_INTWHENDONE 0x00001000 /* intr when done */
-#define ETXD_D0V 0x00010000 /* data 0 valid */
-#define ETXD_B1V 0x00020000 /* buf 1 valid */
-#define ETXD_B2V 0x00040000 /* buf 2 valid */
-#define ETXD_DOCHECKSUM 0x00080000 /* insert ip cksum */
-#define ETXD_CHKOFF_MASK 0x07f00000 /* cksum byte offset */
-#define ETXD_CHKOFF_SHIFT 20
-
-#define ETXD_D0CNT_MASK 0x0000007f
-#define ETXD_B1CNT_MASK 0x0007ff00
-#define ETXD_B1CNT_SHIFT 8
-#define ETXD_B2CNT_MASK 0x7ff00000
-#define ETXD_B2CNT_SHIFT 20
-
-typedef enum ioc3_subdevs_e {
- ioc3_subdev_ether,
- ioc3_subdev_generic,
- ioc3_subdev_nic,
- ioc3_subdev_kbms,
- ioc3_subdev_ttya,
- ioc3_subdev_ttyb,
- ioc3_subdev_ecpp,
- ioc3_subdev_rt,
- ioc3_nsubdevs
-} ioc3_subdev_t;
-
-/* subdevice disable bits,
- * from the standard INFO_LBL_SUBDEVS
- */
-#define IOC3_SDB_ETHER (1<<ioc3_subdev_ether)
-#define IOC3_SDB_GENERIC (1<<ioc3_subdev_generic)
-#define IOC3_SDB_NIC (1<<ioc3_subdev_nic)
-#define IOC3_SDB_KBMS (1<<ioc3_subdev_kbms)
-#define IOC3_SDB_TTYA (1<<ioc3_subdev_ttya)
-#define IOC3_SDB_TTYB (1<<ioc3_subdev_ttyb)
-#define IOC3_SDB_ECPP (1<<ioc3_subdev_ecpp)
-#define IOC3_SDB_RT (1<<ioc3_subdev_rt)
-
-#define IOC3_ALL_SUBDEVS ((1<<ioc3_nsubdevs)-1)
-
-#define IOC3_SDB_SERIAL (IOC3_SDB_TTYA|IOC3_SDB_TTYB)
-
-#define IOC3_STD_SUBDEVS IOC3_ALL_SUBDEVS
-
-#define IOC3_INTA_SUBDEVS IOC3_SDB_ETHER
-#define IOC3_INTB_SUBDEVS (IOC3_SDB_GENERIC|IOC3_SDB_KBMS|IOC3_SDB_SERIAL|IOC3_SDB_ECPP|IOC3_SDB_RT)
-
-#endif /* _IOC3_H */
+#endif /* MIPS_SN_IOC3_H */
diff --git a/arch/mips/sgi-ip27/ip27-console.c b/arch/mips/sgi-ip27/ip27-console.c
index 6bdb48d41276..5886bee89d06 100644
--- a/arch/mips/sgi-ip27/ip27-console.c
+++ b/arch/mips/sgi-ip27/ip27-console.c
@@ -35,6 +35,7 @@ void prom_putchar(char c)
{
struct ioc3_uartregs *uart = console_uart();
- while ((uart->iu_lsr & 0x20) == 0);
- uart->iu_thr = c;
+ while ((readb(&uart->iu_lsr) & 0x20) == 0)
+ ;
+ writeb(c, &uart->iu_thr);
}
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 358e66b81926..713d2472cb97 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -76,7 +76,9 @@
/* Private per NIC data of the driver. */
struct ioc3_private {
- struct ioc3 *regs;
+ struct ioc3_ethregs *regs;
+ struct ioc3 *all_regs;
+ u32 *ssram;
unsigned long *rxr; /* pointer to receiver ring */
struct ioc3_etxd *txr;
struct sk_buff *rx_skbs[512];
@@ -156,128 +158,67 @@ static inline unsigned long ioc3_map(void *ptr, unsigned long vdev)
#define IOC3_SIZE 0x100000
-/*
- * IOC3 is a big endian device
- *
- * Unorthodox but makes the users of these macros more readable - the pointer
- * to the IOC3's memory mapped registers is expected as struct ioc3 * ioc3
- * in the environment.
- */
-#define ioc3_r_mcr() be32_to_cpu(ioc3->mcr)
-#define ioc3_w_mcr(v) do { ioc3->mcr = cpu_to_be32(v); } while (0)
-#define ioc3_w_gpcr_s(v) do { ioc3->gpcr_s = cpu_to_be32(v); } while (0)
-#define ioc3_r_emcr() be32_to_cpu(ioc3->emcr)
-#define ioc3_w_emcr(v) do { ioc3->emcr = cpu_to_be32(v); } while (0)
-#define ioc3_r_eisr() be32_to_cpu(ioc3->eisr)
-#define ioc3_w_eisr(v) do { ioc3->eisr = cpu_to_be32(v); } while (0)
-#define ioc3_r_eier() be32_to_cpu(ioc3->eier)
-#define ioc3_w_eier(v) do { ioc3->eier = cpu_to_be32(v); } while (0)
-#define ioc3_r_ercsr() be32_to_cpu(ioc3->ercsr)
-#define ioc3_w_ercsr(v) do { ioc3->ercsr = cpu_to_be32(v); } while (0)
-#define ioc3_r_erbr_h() be32_to_cpu(ioc3->erbr_h)
-#define ioc3_w_erbr_h(v) do { ioc3->erbr_h = cpu_to_be32(v); } while (0)
-#define ioc3_r_erbr_l() be32_to_cpu(ioc3->erbr_l)
-#define ioc3_w_erbr_l(v) do { ioc3->erbr_l = cpu_to_be32(v); } while (0)
-#define ioc3_r_erbar() be32_to_cpu(ioc3->erbar)
-#define ioc3_w_erbar(v) do { ioc3->erbar = cpu_to_be32(v); } while (0)
-#define ioc3_r_ercir() be32_to_cpu(ioc3->ercir)
-#define ioc3_w_ercir(v) do { ioc3->ercir = cpu_to_be32(v); } while (0)
-#define ioc3_r_erpir() be32_to_cpu(ioc3->erpir)
-#define ioc3_w_erpir(v) do { ioc3->erpir = cpu_to_be32(v); } while (0)
-#define ioc3_r_ertr() be32_to_cpu(ioc3->ertr)
-#define ioc3_w_ertr(v) do { ioc3->ertr = cpu_to_be32(v); } while (0)
-#define ioc3_r_etcsr() be32_to_cpu(ioc3->etcsr)
-#define ioc3_w_etcsr(v) do { ioc3->etcsr = cpu_to_be32(v); } while (0)
-#define ioc3_r_ersr() be32_to_cpu(ioc3->ersr)
-#define ioc3_w_ersr(v) do { ioc3->ersr = cpu_to_be32(v); } while (0)
-#define ioc3_r_etcdc() be32_to_cpu(ioc3->etcdc)
-#define ioc3_w_etcdc(v) do { ioc3->etcdc = cpu_to_be32(v); } while (0)
-#define ioc3_r_ebir() be32_to_cpu(ioc3->ebir)
-#define ioc3_w_ebir(v) do { ioc3->ebir = cpu_to_be32(v); } while (0)
-#define ioc3_r_etbr_h() be32_to_cpu(ioc3->etbr_h)
-#define ioc3_w_etbr_h(v) do { ioc3->etbr_h = cpu_to_be32(v); } while (0)
-#define ioc3_r_etbr_l() be32_to_cpu(ioc3->etbr_l)
-#define ioc3_w_etbr_l(v) do { ioc3->etbr_l = cpu_to_be32(v); } while (0)
-#define ioc3_r_etcir() be32_to_cpu(ioc3->etcir)
-#define ioc3_w_etcir(v) do { ioc3->etcir = cpu_to_be32(v); } while (0)
-#define ioc3_r_etpir() be32_to_cpu(ioc3->etpir)
-#define ioc3_w_etpir(v) do { ioc3->etpir = cpu_to_be32(v); } while (0)
-#define ioc3_r_emar_h() be32_to_cpu(ioc3->emar_h)
-#define ioc3_w_emar_h(v) do { ioc3->emar_h = cpu_to_be32(v); } while (0)
-#define ioc3_r_emar_l() be32_to_cpu(ioc3->emar_l)
-#define ioc3_w_emar_l(v) do { ioc3->emar_l = cpu_to_be32(v); } while (0)
-#define ioc3_r_ehar_h() be32_to_cpu(ioc3->ehar_h)
-#define ioc3_w_ehar_h(v) do { ioc3->ehar_h = cpu_to_be32(v); } while (0)
-#define ioc3_r_ehar_l() be32_to_cpu(ioc3->ehar_l)
-#define ioc3_w_ehar_l(v) do { ioc3->ehar_l = cpu_to_be32(v); } while (0)
-#define ioc3_r_micr() be32_to_cpu(ioc3->micr)
-#define ioc3_w_micr(v) do { ioc3->micr = cpu_to_be32(v); } while (0)
-#define ioc3_r_midr_r() be32_to_cpu(ioc3->midr_r)
-#define ioc3_w_midr_r(v) do { ioc3->midr_r = cpu_to_be32(v); } while (0)
-#define ioc3_r_midr_w() be32_to_cpu(ioc3->midr_w)
-#define ioc3_w_midr_w(v) do { ioc3->midr_w = cpu_to_be32(v); } while (0)
-
static inline u32 mcr_pack(u32 pulse, u32 sample)
{
return (pulse << 10) | (sample << 2);
}
-static int nic_wait(struct ioc3 *ioc3)
+static int nic_wait(u32 __iomem *mcr)
{
- u32 mcr;
+ u32 m;
- do {
- mcr = ioc3_r_mcr();
- } while (!(mcr & 2));
+ do {
+ m = readl(mcr);
+ } while (!(m & 2));
- return mcr & 1;
+ return m & 1;
}
-static int nic_reset(struct ioc3 *ioc3)
+static int nic_reset(u32 __iomem *mcr)
{
int presence;
- ioc3_w_mcr(mcr_pack(500, 65));
- presence = nic_wait(ioc3);
+ writel(mcr_pack(500, 65), mcr);
+ presence = nic_wait(mcr);
- ioc3_w_mcr(mcr_pack(0, 500));
- nic_wait(ioc3);
+ writel(mcr_pack(0, 500), mcr);
+ nic_wait(mcr);
return presence;
}
-static inline int nic_read_bit(struct ioc3 *ioc3)
+static inline int nic_read_bit(u32 __iomem *mcr)
{
int result;
- ioc3_w_mcr(mcr_pack(6, 13));
- result = nic_wait(ioc3);
- ioc3_w_mcr(mcr_pack(0, 100));
- nic_wait(ioc3);
+ writel(mcr_pack(6, 13), mcr);
+ result = nic_wait(mcr);
+ writel(mcr_pack(0, 100), mcr);
+ nic_wait(mcr);
return result;
}
-static inline void nic_write_bit(struct ioc3 *ioc3, int bit)
+static inline void nic_write_bit(u32 __iomem *mcr, int bit)
{
if (bit)
- ioc3_w_mcr(mcr_pack(6, 110));
+ writel(mcr_pack(6, 110), mcr);
else
- ioc3_w_mcr(mcr_pack(80, 30));
+ writel(mcr_pack(80, 30), mcr);
- nic_wait(ioc3);
+ nic_wait(mcr);
}
/*
* Read a byte from an iButton device
*/
-static u32 nic_read_byte(struct ioc3 *ioc3)
+static u32 nic_read_byte(u32 __iomem *mcr)
{
u32 result = 0;
int i;
for (i = 0; i < 8; i++)
- result = (result >> 1) | (nic_read_bit(ioc3) << 7);
+ result = (result >> 1) | (nic_read_bit(mcr) << 7);
return result;
}
@@ -285,7 +226,7 @@ static u32 nic_read_byte(struct ioc3 *ioc3)
/*
* Write a byte to an iButton device
*/
-static void nic_write_byte(struct ioc3 *ioc3, int byte)
+static void nic_write_byte(u32 __iomem *mcr, int byte)
{
int i, bit;
@@ -293,23 +234,23 @@ static void nic_write_byte(struct ioc3 *ioc3, int byte)
bit = byte & 1;
byte >>= 1;
- nic_write_bit(ioc3, bit);
+ nic_write_bit(mcr, bit);
}
}
-static u64 nic_find(struct ioc3 *ioc3, int *last)
+static u64 nic_find(u32 __iomem *mcr, int *last)
{
int a, b, index, disc;
u64 address = 0;
- nic_reset(ioc3);
+ nic_reset(mcr);
/* Search ROM. */
- nic_write_byte(ioc3, 0xf0);
+ nic_write_byte(mcr, 0xf0);
/* Algorithm from ``Book of iButton Standards''. */
for (index = 0, disc = 0; index < 64; index++) {
- a = nic_read_bit(ioc3);
- b = nic_read_bit(ioc3);
+ a = nic_read_bit(mcr);
+ b = nic_read_bit(mcr);
if (a && b) {
printk("NIC search failed (not fatal).\n");
@@ -325,14 +266,14 @@ static u64 nic_find(struct ioc3 *ioc3, int *last)
disc = index;
} else if ((address & (1UL << index)) == 0)
disc = index;
- nic_write_bit(ioc3, address & (1UL << index));
+ nic_write_bit(mcr, address & (1UL << index));
continue;
} else {
if (a)
address |= 1UL << index;
else
address &= ~(1UL << index);
- nic_write_bit(ioc3, a);
+ nic_write_bit(mcr, a);
continue;
}
}
@@ -342,7 +283,7 @@ static u64 nic_find(struct ioc3 *ioc3, int *last)
return address;
}
-static int nic_init(struct ioc3 *ioc3)
+static int nic_init(u32 __iomem *mcr)
{
const char *unknown = "unknown";
const char *type = unknown;
@@ -352,7 +293,7 @@ static int nic_init(struct ioc3 *ioc3)
while (1) {
u64 reg;
- reg = nic_find(ioc3, &save);
+ reg = nic_find(mcr, &save);
switch (reg & 0xff) {
case 0x91:
@@ -366,12 +307,12 @@ static int nic_init(struct ioc3 *ioc3)
continue;
}
- nic_reset(ioc3);
+ nic_reset(mcr);
/* Match ROM. */
- nic_write_byte(ioc3, 0x55);
+ nic_write_byte(mcr, 0x55);
for (i = 0; i < 8; i++)
- nic_write_byte(ioc3, (reg >> (i << 3)) & 0xff);
+ nic_write_byte(mcr, (reg >> (i << 3)) & 0xff);
reg >>= 8; /* Shift out type. */
for (i = 0; i < 6; i++) {
@@ -396,15 +337,15 @@ static int nic_init(struct ioc3 *ioc3)
*/
static void ioc3_get_eaddr_nic(struct ioc3_private *ip)
{
- struct ioc3 *ioc3 = ip->regs;
- u8 nic[14];
+ u32 __iomem *mcr = &ip->all_regs->mcr;
int tries = 2; /* There may be some problem with the battery? */
+ u8 nic[14];
int i;
- ioc3_w_gpcr_s(1 << 21);
+ writel(1 << 21, &ip->all_regs->gpcr_s);
while (tries--) {
- if (!nic_init(ioc3))
+ if (!nic_init(mcr))
break;
udelay(500);
}
@@ -415,12 +356,12 @@ static void ioc3_get_eaddr_nic(struct ioc3_private *ip)
}
/* Read Memory. */
- nic_write_byte(ioc3, 0xf0);
- nic_write_byte(ioc3, 0x00);
- nic_write_byte(ioc3, 0x00);
+ nic_write_byte(mcr, 0xf0);
+ nic_write_byte(mcr, 0x00);
+ nic_write_byte(mcr, 0x00);
for (i = 13; i >= 0; i--)
- nic[i] = nic_read_byte(ioc3);
+ nic[i] = nic_read_byte(mcr);
for (i = 2; i < 8; i++)
ip->dev->dev_addr[i - 2] = nic[i];
@@ -441,11 +382,15 @@ static void ioc3_get_eaddr(struct ioc3_private *ip)
static void __ioc3_set_mac_address(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
- ioc3_w_emar_h((dev->dev_addr[5] << 8) | dev->dev_addr[4]);
- ioc3_w_emar_l((dev->dev_addr[3] << 24) | (dev->dev_addr[2] << 16) |
- (dev->dev_addr[1] << 8) | dev->dev_addr[0]);
+ writel((dev->dev_addr[5] << 8) |
+ dev->dev_addr[4],
+ &ip->regs->emar_h);
+ writel((dev->dev_addr[3] << 24) |
+ (dev->dev_addr[2] << 16) |
+ (dev->dev_addr[1] << 8) |
+ dev->dev_addr[0],
+ &ip->regs->emar_l);
}
static int ioc3_set_mac_address(struct net_device *dev, void *addr)
@@ -469,24 +414,29 @@ static int ioc3_set_mac_address(struct net_device *dev, void *addr)
static int ioc3_mdio_read(struct net_device *dev, int phy, int reg)
{
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
+ struct ioc3_ethregs *regs = ip->regs;
- while (ioc3_r_micr() & MICR_BUSY);
- ioc3_w_micr((phy << MICR_PHYADDR_SHIFT) | reg | MICR_READTRIG);
- while (ioc3_r_micr() & MICR_BUSY);
+ while (readl(®s->micr) & MICR_BUSY)
+ ;
+ writel((phy << MICR_PHYADDR_SHIFT) | reg | MICR_READTRIG,
+ ®s->micr);
+ while (readl(®s->micr) & MICR_BUSY)
+ ;
- return ioc3_r_midr_r() & MIDR_DATA_MASK;
+ return readl(®s->midr_r) & MIDR_DATA_MASK;
}
static void ioc3_mdio_write(struct net_device *dev, int phy, int reg, int data)
{
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
-
- while (ioc3_r_micr() & MICR_BUSY);
- ioc3_w_midr_w(data);
- ioc3_w_micr((phy << MICR_PHYADDR_SHIFT) | reg);
- while (ioc3_r_micr() & MICR_BUSY);
+ struct ioc3_ethregs *regs = ip->regs;
+
+ while (readl(®s->micr) & MICR_BUSY)
+ ;
+ writel(data, ®s->midr_w);
+ writel((phy << MICR_PHYADDR_SHIFT) | reg, ®s->micr);
+ while (readl(®s->micr) & MICR_BUSY)
+ ;
}
static int ioc3_mii_init(struct ioc3_private *ip);
@@ -494,9 +444,9 @@ static int ioc3_mii_init(struct ioc3_private *ip);
static struct net_device_stats *ioc3_get_stats(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
+ struct ioc3_ethregs *regs = ip->regs;
- dev->stats.collisions += (ioc3_r_etcdc() & ETCDC_COLLCNT_MASK);
+ dev->stats.collisions += readl(®s->etcdc) & ETCDC_COLLCNT_MASK;
return &dev->stats;
}
@@ -572,7 +522,6 @@ static inline void ioc3_rx(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
struct sk_buff *skb, *new_skb;
- struct ioc3 *ioc3 = ip->regs;
int rx_entry, n_entry, len;
struct ioc3_erxbuf *rxb;
unsigned long *rxr;
@@ -640,7 +589,7 @@ static inline void ioc3_rx(struct net_device *dev)
rxb = (struct ioc3_erxbuf *) (skb->data - RX_OFFSET);
w0 = be32_to_cpu(rxb->w0);
}
- ioc3_w_erpir((n_entry << 3) | ERPIR_ARM);
+ writel((n_entry << 3) | ERPIR_ARM, &ip->regs->erpir);
ip->rx_pi = n_entry;
ip->rx_ci = rx_entry;
}
@@ -648,14 +597,14 @@ static inline void ioc3_rx(struct net_device *dev)
static inline void ioc3_tx(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
+ struct ioc3_ethregs *regs = ip->regs;
unsigned long packets, bytes;
- struct ioc3 *ioc3 = ip->regs;
int tx_entry, o_entry;
struct sk_buff *skb;
u32 etcir;
spin_lock(&ip->ioc3_lock);
- etcir = ioc3_r_etcir();
+ etcir = readl(®s->etcir);
tx_entry = (etcir >> 7) & 127;
o_entry = ip->tx_ci;
@@ -671,7 +620,7 @@ static inline void ioc3_tx(struct net_device *dev)
o_entry = (o_entry + 1) & 127; /* Next */
- etcir = ioc3_r_etcir(); /* More pkts sent? */
+ etcir = readl(®s->etcir); /* More pkts sent? */
tx_entry = (etcir >> 7) & 127;
}
@@ -724,44 +673,39 @@ static void ioc3_error(struct net_device *dev, u32 eisr)
/* The interrupt handler does all of the Rx thread work and cleans up
after the Tx thread. */
-static irqreturn_t ioc3_interrupt(int irq, void *_dev)
+static irqreturn_t ioc3_interrupt(int irq, void *dev_id)
{
- struct net_device *dev = (struct net_device *)_dev;
- struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
- const u32 enabled = EISR_RXTIMERINT | EISR_RXOFLO | EISR_RXBUFOFLO |
- EISR_RXMEMERR | EISR_RXPARERR | EISR_TXBUFUFLO |
- EISR_TXEXPLICIT | EISR_TXMEMERR;
+ struct ioc3_private *ip = netdev_priv(dev_id);
+ struct ioc3_ethregs *regs = ip->regs;
u32 eisr;
- eisr = ioc3_r_eisr() & enabled;
-
- ioc3_w_eisr(eisr);
- (void) ioc3_r_eisr(); /* Flush */
+ eisr = readl(®s->eisr);
+ writel(eisr, ®s->eisr);
+ readl(®s->eisr); /* Flush */
if (eisr & (EISR_RXOFLO | EISR_RXBUFOFLO | EISR_RXMEMERR |
EISR_RXPARERR | EISR_TXBUFUFLO | EISR_TXMEMERR))
- ioc3_error(dev, eisr);
+ ioc3_error(dev_id, eisr);
if (eisr & EISR_RXTIMERINT)
- ioc3_rx(dev);
+ ioc3_rx(dev_id);
if (eisr & EISR_TXEXPLICIT)
- ioc3_tx(dev);
+ ioc3_tx(dev_id);
return IRQ_HANDLED;
}
static inline void ioc3_setup_duplex(struct ioc3_private *ip)
{
- struct ioc3 *ioc3 = ip->regs;
+ struct ioc3_ethregs *regs = ip->regs;
if (ip->mii.full_duplex) {
- ioc3_w_etcsr(ETCSR_FD);
+ writel(ETCSR_FD, ®s->etcsr);
ip->emcr |= EMCR_DUPLEX;
} else {
- ioc3_w_etcsr(ETCSR_HD);
+ writel(ETCSR_HD, ®s->etcsr);
ip->emcr &= ~EMCR_DUPLEX;
}
- ioc3_w_emcr(ip->emcr);
+ writel(ip->emcr, ®s->emcr);
}
static void ioc3_timer(struct timer_list *t)
@@ -936,7 +880,7 @@ static void ioc3_alloc_rings(struct net_device *dev)
static void ioc3_init_rings(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
+ struct ioc3_ethregs *regs = ip->regs;
unsigned long ring;
ioc3_free_rings(ip);
@@ -947,90 +891,94 @@ static void ioc3_init_rings(struct net_device *dev)
/* Now the rx ring base, consume & produce registers. */
ring = ioc3_map(ip->rxr, 0);
- ioc3_w_erbr_h(ring >> 32);
- ioc3_w_erbr_l(ring & 0xffffffff);
- ioc3_w_ercir(ip->rx_ci << 3);
- ioc3_w_erpir((ip->rx_pi << 3) | ERPIR_ARM);
+ writel(ring >> 32, ®s->erbr_h);
+ writel(ring & 0xffffffff, ®s->erbr_l);
+ writel(ip->rx_ci << 3, ®s->ercir);
+ writel((ip->rx_pi << 3) | ERPIR_ARM, ®s->erpir);
ring = ioc3_map(ip->txr, 0);
ip->txqlen = 0; /* nothing queued */
/* Now the tx ring base, consume & produce registers. */
- ioc3_w_etbr_h(ring >> 32);
- ioc3_w_etbr_l(ring & 0xffffffff);
- ioc3_w_etpir(ip->tx_pi << 7);
- ioc3_w_etcir(ip->tx_ci << 7);
- (void) ioc3_r_etcir(); /* Flush */
+ writel(ring >> 32, ®s->etbr_h);
+ writel(ring & 0xffffffff, ®s->etbr_l);
+ writel(ip->tx_pi << 7, ®s->etpir);
+ writel(ip->tx_ci << 7, ®s->etcir);
+ readl(®s->etcir); /* Flush */
}
static inline void ioc3_ssram_disc(struct ioc3_private *ip)
{
- struct ioc3 *ioc3 = ip->regs;
- volatile u32 *ssram0 = &ioc3->ssram[0x0000];
- volatile u32 *ssram1 = &ioc3->ssram[0x4000];
- unsigned int pattern = 0x5555;
+ struct ioc3_ethregs *regs = ip->regs;
+ u32 *ssram0 = &ip->ssram[0x0000];
+ u32 *ssram1 = &ip->ssram[0x4000];
+ u32 pattern = 0x5555;
/* Assume the larger size SSRAM and enable parity checking */
- ioc3_w_emcr(ioc3_r_emcr() | (EMCR_BUFSIZ | EMCR_RAMPAR));
+ writel(readl(®s->emcr) | (EMCR_BUFSIZ | EMCR_RAMPAR), ®s->emcr);
+ readl(®s->emcr); /* Flush */
- *ssram0 = pattern;
- *ssram1 = ~pattern & IOC3_SSRAM_DM;
+ writel(pattern, ssram0);
+ writel(~pattern & IOC3_SSRAM_DM, ssram1);
- if ((*ssram0 & IOC3_SSRAM_DM) != pattern ||
- (*ssram1 & IOC3_SSRAM_DM) != (~pattern & IOC3_SSRAM_DM)) {
+ if ((readl(ssram0) & IOC3_SSRAM_DM) != pattern ||
+ (readl(ssram1) & IOC3_SSRAM_DM) != (~pattern & IOC3_SSRAM_DM)) {
/* set ssram size to 64 KB */
- ip->emcr = EMCR_RAMPAR;
- ioc3_w_emcr(ioc3_r_emcr() & ~EMCR_BUFSIZ);
- } else
- ip->emcr = EMCR_BUFSIZ | EMCR_RAMPAR;
+ ip->emcr |= EMCR_RAMPAR;
+ writel(readl(®s->emcr) & ~EMCR_BUFSIZ, ®s->emcr);
+ } else {
+ ip->emcr |= EMCR_BUFSIZ | EMCR_RAMPAR;
+ }
}
static void ioc3_init(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
+ struct ioc3_ethregs *regs = ip->regs;
del_timer_sync(&ip->ioc3_timer); /* Kill if running */
- ioc3_w_emcr(EMCR_RST); /* Reset */
- (void) ioc3_r_emcr(); /* Flush WB */
+ writel(EMCR_RST, ®s->emcr); /* Reset */
+ readl(®s->emcr); /* Flush WB */
udelay(4); /* Give it time ... */
- ioc3_w_emcr(0);
- (void) ioc3_r_emcr();
+ writel(0, ®s->emcr);
+ readl(®s->emcr);
/* Misc registers */
#ifdef CONFIG_SGI_IP27
- ioc3_w_erbar(PCI64_ATTR_BAR >> 32); /* Barrier on last store */
+ /* Barrier on last store */
+ writel(PCI64_ATTR_BAR >> 32, ®s->erbar);
#else
- ioc3_w_erbar(0); /* Let PCI API get it right */
+ /* Let PCI API get it right */
+ writel(0, ®s->erbar);
#endif
- (void) ioc3_r_etcdc(); /* Clear on read */
- ioc3_w_ercsr(15); /* RX low watermark */
- ioc3_w_ertr(0); /* Interrupt immediately */
+ readl(®s->etcdc); /* Clear on read */
+ writel(15, ®s->ercsr); /* RX low watermark */
+ writel(0, ®s->ertr); /* Interrupt immediately */
__ioc3_set_mac_address(dev);
- ioc3_w_ehar_h(ip->ehar_h);
- ioc3_w_ehar_l(ip->ehar_l);
- ioc3_w_ersr(42); /* XXX should be random */
+ writel(ip->ehar_h, ®s->ehar_h);
+ writel(ip->ehar_l, ®s->ehar_l);
+ writel(42, ®s->ersr); /* XXX should be random */
ioc3_init_rings(dev);
ip->emcr |= ((RX_OFFSET / 2) << EMCR_RXOFF_SHIFT) | EMCR_TXDMAEN |
EMCR_TXEN | EMCR_RXDMAEN | EMCR_RXEN | EMCR_PADEN;
- ioc3_w_emcr(ip->emcr);
- ioc3_w_eier(EISR_RXTIMERINT | EISR_RXOFLO | EISR_RXBUFOFLO |
- EISR_RXMEMERR | EISR_RXPARERR | EISR_TXBUFUFLO |
- EISR_TXEXPLICIT | EISR_TXMEMERR);
- (void) ioc3_r_eier();
+ writel(ip->emcr, ®s->emcr);
+ writel(EISR_RXTIMERINT | EISR_RXOFLO | EISR_RXBUFOFLO |
+ EISR_RXMEMERR | EISR_RXPARERR | EISR_TXBUFUFLO |
+ EISR_TXEXPLICIT | EISR_TXMEMERR, ®s->eier);
+ readl(®s->eier);
}
static inline void ioc3_stop(struct ioc3_private *ip)
{
- struct ioc3 *ioc3 = ip->regs;
+ struct ioc3_ethregs *regs = ip->regs;
- ioc3_w_emcr(0); /* Shutup */
- ioc3_w_eier(0); /* Disable interrupts */
- (void) ioc3_r_eier(); /* Flush */
+ writel(0, ®s->emcr); /* Shutup */
+ writel(0, ®s->eier); /* Disable interrupts */
+ readl(®s->eier); /* Flush */
}
static int ioc3_open(struct net_device *dev)
@@ -1153,16 +1101,18 @@ static void ioc3_8250_register(struct ioc3_uartregs __iomem *uart)
};
unsigned char lcr;
- lcr = uart->iu_lcr;
- uart->iu_lcr = lcr | UART_LCR_DLAB;
- uart->iu_scr = COSMISC_CONSTANT,
- uart->iu_lcr = lcr;
- uart->iu_lcr;
+ lcr = readb(&uart->iu_lcr);
+ writeb(lcr | UART_LCR_DLAB, &uart->iu_lcr);
+ writeb(COSMISC_CONSTANT, &uart->iu_scr);
+ writeb(lcr, &uart->iu_lcr);
+ readb(&uart->iu_lcr);
serial8250_register_8250_port(&port);
}
static void ioc3_serial_probe(struct pci_dev *pdev, struct ioc3 *ioc3)
{
+ u32 sio_iec;
+
/*
* We need to recognice and treat the fourth MENET serial as it
* does not have an SuperIO chip attached to it, therefore attempting
@@ -1179,29 +1129,31 @@ static void ioc3_serial_probe(struct pci_dev *pdev, struct ioc3 *ioc3)
* Switch IOC3 to PIO mode. It probably already was but let's be
* paranoid
*/
- ioc3->gpcr_s = GPCR_UARTA_MODESEL | GPCR_UARTB_MODESEL;
- ioc3->gpcr_s;
- ioc3->gppr_6 = 0;
- ioc3->gppr_6;
- ioc3->gppr_7 = 0;
- ioc3->gppr_7;
- ioc3->sscr_a = ioc3->sscr_a & ~SSCR_DMA_EN;
- ioc3->sscr_a;
- ioc3->sscr_b = ioc3->sscr_b & ~SSCR_DMA_EN;
- ioc3->sscr_b;
+ writel(GPCR_UARTA_MODESEL | GPCR_UARTB_MODESEL, &ioc3->gpcr_s);
+ readl(&ioc3->gpcr_s);
+ writel(0, &ioc3->gppr[6]);
+ readl(&ioc3->gppr[6]);
+ writel(0, &ioc3->gppr[7]);
+ readl(&ioc3->gppr[7]);
+ writel(readl(&ioc3->port_a.sscr) & ~SSCR_DMA_EN, &ioc3->port_a.sscr);
+ readl(&ioc3->port_a.sscr);
+ writel(readl(&ioc3->port_b.sscr) & ~SSCR_DMA_EN, &ioc3->port_b.sscr);
+ readl(&ioc3->port_b.sscr);
/* Disable all SA/B interrupts except for SA/B_INT in SIO_IEC. */
- ioc3->sio_iec &= ~ (SIO_IR_SA_TX_MT | SIO_IR_SA_RX_FULL |
- SIO_IR_SA_RX_HIGH | SIO_IR_SA_RX_TIMER |
- SIO_IR_SA_DELTA_DCD | SIO_IR_SA_DELTA_CTS |
- SIO_IR_SA_TX_EXPLICIT | SIO_IR_SA_MEMERR);
- ioc3->sio_iec |= SIO_IR_SA_INT;
- ioc3->sscr_a = 0;
- ioc3->sio_iec &= ~ (SIO_IR_SB_TX_MT | SIO_IR_SB_RX_FULL |
- SIO_IR_SB_RX_HIGH | SIO_IR_SB_RX_TIMER |
- SIO_IR_SB_DELTA_DCD | SIO_IR_SB_DELTA_CTS |
- SIO_IR_SB_TX_EXPLICIT | SIO_IR_SB_MEMERR);
- ioc3->sio_iec |= SIO_IR_SB_INT;
- ioc3->sscr_b = 0;
+ sio_iec = readl(&ioc3->sio_iec);
+ sio_iec &= ~(SIO_IR_SA_TX_MT | SIO_IR_SA_RX_FULL |
+ SIO_IR_SA_RX_HIGH | SIO_IR_SA_RX_TIMER |
+ SIO_IR_SA_DELTA_DCD | SIO_IR_SA_DELTA_CTS |
+ SIO_IR_SA_TX_EXPLICIT | SIO_IR_SA_MEMERR);
+ sio_iec |= SIO_IR_SA_INT;
+ sio_iec &= ~(SIO_IR_SB_TX_MT | SIO_IR_SB_RX_FULL |
+ SIO_IR_SB_RX_HIGH | SIO_IR_SB_RX_TIMER |
+ SIO_IR_SB_DELTA_DCD | SIO_IR_SB_DELTA_CTS |
+ SIO_IR_SB_TX_EXPLICIT | SIO_IR_SB_MEMERR);
+ sio_iec |= SIO_IR_SB_INT;
+ writel(sio_iec, &ioc3->sio_iec);
+ writel(0, &ioc3->port_a.sscr);
+ writel(0, &ioc3->port_b.sscr);
ioc3_8250_register(&ioc3->sregs.uarta);
ioc3_8250_register(&ioc3->sregs.uartb);
@@ -1282,7 +1234,9 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
err = -ENOMEM;
goto out_res;
}
- ip->regs = ioc3;
+ ip->regs = &ioc3->eth;
+ ip->ssram = ioc3->ssram;
+ ip->all_regs = ioc3;
#ifdef CONFIG_SERIAL_8250
ioc3_serial_probe(pdev, ioc3);
@@ -1363,12 +1317,11 @@ static void ioc3_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
unregister_netdev(dev);
del_timer_sync(&ip->ioc3_timer);
- iounmap(ioc3);
+ iounmap(ip->all_regs);
pci_release_regions(pdev);
free_netdev(dev);
/*
@@ -1392,11 +1345,10 @@ static struct pci_driver ioc3_driver = {
static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
- unsigned long data;
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
- unsigned int len;
struct ioc3_etxd *desc;
+ unsigned long data;
+ unsigned int len;
uint32_t w0 = 0;
int produce;
@@ -1489,7 +1441,7 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
ip->tx_skbs[produce] = skb; /* Remember skb */
produce = (produce + 1) & 127;
ip->tx_pi = produce;
- ioc3_w_etpir(produce << 7); /* Fire ... */
+ writel(produce << 7, &ip->regs->etpir); /* Fire ... */
ip->txqlen++;
@@ -1623,21 +1575,21 @@ static int ioc3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
static void ioc3_set_multicast_list(struct net_device *dev)
{
- struct netdev_hw_addr *ha;
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
+ struct ioc3_ethregs *regs = ip->regs;
+ struct netdev_hw_addr *ha;
u64 ehar = 0;
netif_stop_queue(dev); /* Lock out others. */
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
ip->emcr |= EMCR_PROMISC;
- ioc3_w_emcr(ip->emcr);
- (void) ioc3_r_emcr();
+ writel(ip->emcr, ®s->emcr);
+ readl(®s->emcr);
} else {
ip->emcr &= ~EMCR_PROMISC;
- ioc3_w_emcr(ip->emcr); /* Clear promiscuous. */
- (void) ioc3_r_emcr();
+ writel(ip->emcr, ®s->emcr); /* Clear promiscuous. */
+ readl(®s->emcr);
if ((dev->flags & IFF_ALLMULTI) ||
(netdev_mc_count(dev) > 64)) {
@@ -1653,8 +1605,8 @@ static void ioc3_set_multicast_list(struct net_device *dev)
ip->ehar_h = ehar >> 32;
ip->ehar_l = ehar & 0xffffffff;
}
- ioc3_w_ehar_h(ip->ehar_h);
- ioc3_w_ehar_l(ip->ehar_l);
+ writel(ip->ehar_h, ®s->ehar_h);
+ writel(ip->ehar_l, ®s->ehar_l);
}
netif_wake_queue(dev); /* Let us get going again. */
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 08/15] net: sgi: ioc3-eth: introduce chip start function
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
ioc3_init did everything from reset to init rings to starting the chip.
This change move out chip start into a new function as preparation
for easier handling of receive buffer allocation failures.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 49 ++++++++++++++++++++++---------------
1 file changed, 29 insertions(+), 20 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index de20f644e07d..05db0d1aeb04 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -105,6 +105,7 @@ static void ioc3_set_multicast_list(struct net_device *dev);
static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev);
static void ioc3_timeout(struct net_device *dev);
static inline unsigned int ioc3_hash(const unsigned char *addr);
+static void ioc3_start(struct ioc3_private *ip);
static inline void ioc3_stop(struct ioc3_private *ip);
static void ioc3_init(struct net_device *dev);
@@ -660,6 +661,7 @@ static void ioc3_error(struct net_device *dev, u32 eisr)
ioc3_stop(ip);
ioc3_init(dev);
+ ioc3_start(ip);
ioc3_mii_init(ip);
netif_wake_queue(dev);
@@ -830,31 +832,11 @@ static void ioc3_alloc_rx_bufs(struct net_device *dev)
static void ioc3_init_rings(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3_ethregs *regs = ip->regs;
- unsigned long ring;
ioc3_free_rx_bufs(ip);
ioc3_alloc_rx_bufs(dev);
ioc3_clean_tx_ring(ip);
-
- /* Now the rx ring base, consume & produce registers. */
- ring = ioc3_map(ip->rxr, 0);
- writel(ring >> 32, ®s->erbr_h);
- writel(ring & 0xffffffff, ®s->erbr_l);
- writel(ip->rx_ci << 3, ®s->ercir);
- writel((ip->rx_pi << 3) | ERPIR_ARM, ®s->erpir);
-
- ring = ioc3_map(ip->txr, 0);
-
- ip->txqlen = 0; /* nothing queued */
-
- /* Now the tx ring base, consume & produce registers. */
- writel(ring >> 32, ®s->etbr_h);
- writel(ring & 0xffffffff, ®s->etbr_l);
- writel(ip->tx_pi << 7, ®s->etpir);
- writel(ip->tx_ci << 7, ®s->etcir);
- readl(®s->etcir); /* Flush */
}
static inline void ioc3_ssram_disc(struct ioc3_private *ip)
@@ -911,6 +893,30 @@ static void ioc3_init(struct net_device *dev)
writel(42, ®s->ersr); /* XXX should be random */
ioc3_init_rings(dev);
+}
+
+static void ioc3_start(struct ioc3_private *ip)
+{
+ struct ioc3_ethregs *regs = ip->regs;
+ unsigned long ring;
+
+ /* Now the rx ring base, consume & produce registers. */
+ ring = ioc3_map(ip->rxr, 0);
+ writel(ring >> 32, ®s->erbr_h);
+ writel(ring & 0xffffffff, ®s->erbr_l);
+ writel(ip->rx_ci << 3, ®s->ercir);
+ writel((ip->rx_pi << 3) | ERPIR_ARM, ®s->erpir);
+
+ ring = ioc3_map(ip->txr, 0);
+
+ ip->txqlen = 0; /* nothing queued */
+
+ /* Now the tx ring base, consume & produce registers. */
+ writel(ring >> 32, ®s->etbr_h);
+ writel(ring & 0xffffffff, ®s->etbr_l);
+ writel(ip->tx_pi << 7, ®s->etpir);
+ writel(ip->tx_ci << 7, ®s->etcir);
+ readl(®s->etcir); /* Flush */
ip->emcr |= ((RX_OFFSET / 2) << EMCR_RXOFF_SHIFT) | EMCR_TXDMAEN |
EMCR_TXEN | EMCR_RXDMAEN | EMCR_RXEN | EMCR_PADEN;
@@ -943,6 +949,7 @@ static int ioc3_open(struct net_device *dev)
ip->ehar_h = 0;
ip->ehar_l = 0;
ioc3_init(dev);
+ ioc3_start(ip);
ioc3_mii_start(ip);
netif_start_queue(dev);
@@ -1211,6 +1218,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
ioc3_init(dev);
+ ioc3_start(ip);
ip->pdev = pdev;
@@ -1431,6 +1439,7 @@ static void ioc3_timeout(struct net_device *dev)
ioc3_stop(ip);
ioc3_init(dev);
+ ioc3_start(ip);
ioc3_mii_init(ip);
ioc3_mii_start(ip);
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 14/15] net: sgi: ioc3-eth: protect emcr in all cases
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
emcr in private struct wasn't always protected by spinlock.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 00942b37a1e4..d2b6659adba6 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -729,6 +729,8 @@ static inline void ioc3_setup_duplex(struct ioc3_private *ip)
{
struct ioc3_ethregs *regs = ip->regs;
+ spin_lock_irq(&ip->ioc3_lock);
+
if (ip->mii.full_duplex) {
writel(ETCSR_FD, ®s->etcsr);
ip->emcr |= EMCR_DUPLEX;
@@ -737,6 +739,8 @@ static inline void ioc3_setup_duplex(struct ioc3_private *ip)
ip->emcr &= ~EMCR_DUPLEX;
}
writel(ip->emcr, ®s->emcr);
+
+ spin_unlock_irq(&ip->ioc3_lock);
}
static void ioc3_timer(struct timer_list *t)
@@ -1628,6 +1632,8 @@ static void ioc3_set_multicast_list(struct net_device *dev)
netif_stop_queue(dev); /* Lock out others. */
+ spin_lock_irq(&ip->ioc3_lock);
+
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
ip->emcr |= EMCR_PROMISC;
writel(ip->emcr, ®s->emcr);
@@ -1656,6 +1662,8 @@ static void ioc3_set_multicast_list(struct net_device *dev)
writel(ip->ehar_l, ®s->ehar_l);
}
+ spin_unlock_irq(&ip->ioc3_lock);
+
netif_wake_queue(dev); /* Let us get going again. */
}
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 13/15] net: sgi: ioc3-eth: Fix IPG settings
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
The half/full duplex settings for inter packet gap counters/timer were
reversed.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 0c2713bba741..00942b37a1e4 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -79,8 +79,8 @@
#define RX_OFFSET (sizeof(struct ioc3_erxbuf) + NET_IP_ALIGN)
#define RX_BUF_SIZE (13 * IOC3_DMA_XFER_LEN)
-#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 ((21 << ETCSR_IPGR2_SHIFT) | (21 << ETCSR_IPGR1_SHIFT) | 21)
+#define ETCSR_HD ((17 << ETCSR_IPGR2_SHIFT) | (11 << ETCSR_IPGR1_SHIFT) | 21)
/* Private per NIC data of the driver. */
struct ioc3_private {
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 06/15] net: sgi: ioc3-eth: get rid of ioc3_clean_rx_ring()
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
Move clearing of the descriptor valid bit into ioc3_alloc_rings. This
makes ioc3_clean_rx_ring obsolete.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 22 +---------------------
1 file changed, 1 insertion(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index d9d94a55ac34..e3867ea9abb7 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -761,26 +761,6 @@ static void ioc3_mii_start(struct ioc3_private *ip)
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;
-
- for (i = ip->rx_ci; i & 15; i++) {
- ip->rx_skbs[ip->rx_pi] = ip->rx_skbs[ip->rx_ci];
- ip->rxr[ip->rx_pi++] = ip->rxr[ip->rx_ci++];
- }
- ip->rx_pi &= RX_RING_MASK;
- ip->rx_ci &= RX_RING_MASK;
-
- for (i = ip->rx_ci; i != ip->rx_pi; i = (i + 1) & RX_RING_MASK) {
- skb = ip->rx_skbs[i];
- rxb = (struct ioc3_erxbuf *)(skb->data - RX_OFFSET);
- rxb->w0 = 0;
- }
-}
-
static inline void ioc3_clean_tx_ring(struct ioc3_private *ip)
{
struct sk_buff *skb;
@@ -841,6 +821,7 @@ static void ioc3_alloc_rings(struct net_device *dev)
/* Because we reserve afterwards. */
skb_put(skb, (1664 + RX_OFFSET));
rxb = (struct ioc3_erxbuf *)skb->data;
+ rxb->w0 = 0; /* Clear valid flag */
ip->rxr[i] = cpu_to_be64(ioc3_map(rxb, 1));
skb_reserve(skb, RX_OFFSET);
}
@@ -860,7 +841,6 @@ static void ioc3_init_rings(struct net_device *dev)
ioc3_free_rings(ip);
ioc3_alloc_rings(dev);
- ioc3_clean_rx_ring(ip);
ioc3_clean_tx_ring(ip);
/* Now the rx ring base, consume & produce registers. */
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 07/15] net: sgi: ioc3-eth: separate tx and rx ring handling
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
After allocation of descriptor memory is now done once in probe
handling of tx ring is completely done by ioc3_clean_tx_ring. So
we remove the remaining tx ring actions out of ioc3_alloc_rings
and ioc3_free_rings and rename it to ioc3_[alloc|free]_rx_bufs
to better describe what they are doing.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index e3867ea9abb7..de20f644e07d 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -778,13 +778,11 @@ static inline void ioc3_clean_tx_ring(struct ioc3_private *ip)
ip->tx_ci = 0;
}
-static void ioc3_free_rings(struct ioc3_private *ip)
+static void ioc3_free_rx_bufs(struct ioc3_private *ip)
{
struct sk_buff *skb;
int rx_entry, n_entry;
- ioc3_clean_tx_ring(ip);
-
n_entry = ip->rx_ci;
rx_entry = ip->rx_pi;
@@ -797,7 +795,7 @@ static void ioc3_free_rings(struct ioc3_private *ip)
}
}
-static void ioc3_alloc_rings(struct net_device *dev)
+static void ioc3_alloc_rx_bufs(struct net_device *dev)
{
struct ioc3_private *ip = netdev_priv(dev);
struct ioc3_erxbuf *rxb;
@@ -827,9 +825,6 @@ static void ioc3_alloc_rings(struct net_device *dev)
}
ip->rx_ci = 0;
ip->rx_pi = RX_BUFFS;
-
- ip->tx_pi = 0;
- ip->tx_ci = 0;
}
static void ioc3_init_rings(struct net_device *dev)
@@ -838,8 +833,8 @@ static void ioc3_init_rings(struct net_device *dev)
struct ioc3_ethregs *regs = ip->regs;
unsigned long ring;
- ioc3_free_rings(ip);
- ioc3_alloc_rings(dev);
+ ioc3_free_rx_bufs(ip);
+ ioc3_alloc_rx_bufs(dev);
ioc3_clean_tx_ring(ip);
@@ -965,7 +960,9 @@ static int ioc3_close(struct net_device *dev)
ioc3_stop(ip);
free_irq(dev->irq, dev);
- ioc3_free_rings(ip);
+ ioc3_free_rx_bufs(ip);
+ ioc3_clean_tx_ring(ip);
+
return 0;
}
@@ -1266,7 +1263,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
out_stop:
ioc3_stop(ip);
del_timer_sync(&ip->ioc3_timer);
- ioc3_free_rings(ip);
+ ioc3_free_rx_bufs(ip);
kfree(ip->rxr);
kfree(ip->txr);
out_res:
--
2.13.7
^ permalink raw reply related
* [PATCH v2 net-next 04/15] net: sgi: ioc3-eth: use defines for constants dealing with desc rings
From: Thomas Bogendoerfer @ 2019-08-29 15:50 UTC (permalink / raw)
To: Ralf Baechle, Paul Burton, James Hogan, David S. Miller,
linux-mips, linux-kernel, netdev
In-Reply-To: <20190829155014.9229-1-tbogendoerfer@suse.de>
Descriptor ring sizes of the IOC3 are more or less fixed size. To
make clearer where there is a relation to ring sizes use defines.
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 42 +++++++++++++++++++++----------------
1 file changed, 24 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 51cc1389e204..ba18a53fbbe6 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -61,10 +61,16 @@
#include <asm/sn/ioc3.h>
#include <asm/pci/bridge.h>
-/* 64 RX buffers. This is tunable in the range of 16 <= x < 512. The
- * value must be a power of two.
+/* Number of 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 RX_BUFFS 64
+#define RX_RING_ENTRIES 512 /* fixed in hardware */
+#define RX_RING_MASK (RX_RING_ENTRIES - 1)
+
+/* 128 TX buffers (not tunable) */
+#define TX_RING_ENTRIES 128
+#define TX_RING_MASK (TX_RING_ENTRIES - 1)
#define ETCSR_FD ((17 << ETCSR_IPGR2_SHIFT) | (11 << ETCSR_IPGR1_SHIFT) | 21)
#define ETCSR_HD ((21 << ETCSR_IPGR2_SHIFT) | (21 << ETCSR_IPGR1_SHIFT) | 21)
@@ -76,8 +82,8 @@ struct ioc3_private {
u32 *ssram;
unsigned long *rxr; /* pointer to receiver ring */
struct ioc3_etxd *txr;
- struct sk_buff *rx_skbs[512];
- struct sk_buff *tx_skbs[128];
+ struct sk_buff *rx_skbs[RX_RING_ENTRIES];
+ struct sk_buff *tx_skbs[TX_RING_ENTRIES];
int rx_ci; /* RX consumer index */
int rx_pi; /* RX producer index */
int tx_ci; /* TX consumer index */
@@ -573,10 +579,10 @@ static inline void ioc3_rx(struct net_device *dev)
ip->rx_skbs[n_entry] = new_skb;
rxr[n_entry] = cpu_to_be64(ioc3_map(rxb, 1));
rxb->w0 = 0; /* Clear valid flag */
- n_entry = (n_entry + 1) & 511; /* Update erpir */
+ n_entry = (n_entry + 1) & RX_RING_MASK; /* Update erpir */
/* Now go on to the next ring entry. */
- rx_entry = (rx_entry + 1) & 511;
+ rx_entry = (rx_entry + 1) & RX_RING_MASK;
skb = ip->rx_skbs[rx_entry];
rxb = (struct ioc3_erxbuf *)(skb->data - RX_OFFSET);
w0 = be32_to_cpu(rxb->w0);
@@ -598,7 +604,7 @@ static inline void ioc3_tx(struct net_device *dev)
spin_lock(&ip->ioc3_lock);
etcir = readl(®s->etcir);
- tx_entry = (etcir >> 7) & 127;
+ tx_entry = (etcir >> 7) & TX_RING_MASK;
o_entry = ip->tx_ci;
packets = 0;
bytes = 0;
@@ -610,17 +616,17 @@ static inline void ioc3_tx(struct net_device *dev)
dev_consume_skb_irq(skb);
ip->tx_skbs[o_entry] = NULL;
- o_entry = (o_entry + 1) & 127; /* Next */
+ o_entry = (o_entry + 1) & TX_RING_MASK; /* Next */
etcir = readl(®s->etcir); /* More pkts sent? */
- tx_entry = (etcir >> 7) & 127;
+ tx_entry = (etcir >> 7) & TX_RING_MASK;
}
dev->stats.tx_packets += packets;
dev->stats.tx_bytes += bytes;
ip->txqlen -= packets;
- if (ip->txqlen < 128)
+ if (netif_queue_stopped(dev) && ip->txqlen < TX_RING_ENTRIES)
netif_wake_queue(dev);
ip->tx_ci = o_entry;
@@ -765,10 +771,10 @@ static inline void ioc3_clean_rx_ring(struct ioc3_private *ip)
ip->rx_skbs[ip->rx_pi] = ip->rx_skbs[ip->rx_ci];
ip->rxr[ip->rx_pi++] = ip->rxr[ip->rx_ci++];
}
- ip->rx_pi &= 511;
- ip->rx_ci &= 511;
+ ip->rx_pi &= RX_RING_MASK;
+ ip->rx_ci &= RX_RING_MASK;
- for (i = ip->rx_ci; i != ip->rx_pi; i = (i + 1) & 511) {
+ for (i = ip->rx_ci; i != ip->rx_pi; i = (i + 1) & RX_RING_MASK) {
skb = ip->rx_skbs[i];
rxb = (struct ioc3_erxbuf *)(skb->data - RX_OFFSET);
rxb->w0 = 0;
@@ -780,7 +786,7 @@ static inline void ioc3_clean_tx_ring(struct ioc3_private *ip)
struct sk_buff *skb;
int i;
- for (i = 0; i < 128; i++) {
+ for (i = 0; i < TX_RING_ENTRIES; i++) {
skb = ip->tx_skbs[i];
if (skb) {
ip->tx_skbs[i] = NULL;
@@ -812,7 +818,7 @@ static void ioc3_free_rings(struct ioc3_private *ip)
if (skb)
dev_kfree_skb_any(skb);
- n_entry = (n_entry + 1) & 511;
+ n_entry = (n_entry + 1) & RX_RING_MASK;
}
free_page((unsigned long)ip->rxr);
ip->rxr = NULL;
@@ -1425,13 +1431,13 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
mb(); /* make sure all descriptor changes are visible */
ip->tx_skbs[produce] = skb; /* Remember skb */
- produce = (produce + 1) & 127;
+ produce = (produce + 1) & TX_RING_MASK;
ip->tx_pi = produce;
writel(produce << 7, &ip->regs->etpir); /* Fire ... */
ip->txqlen++;
- if (ip->txqlen >= 127)
+ if (ip->txqlen >= (TX_RING_ENTRIES - 1))
netif_stop_queue(dev);
spin_unlock_irq(&ip->ioc3_lock);
--
2.13.7
^ permalink raw reply related
* Re: [PATCH bpf-next 2/3] tools: bpftool: improve and check builds for different make invocations
From: Ilya Leoshkevich @ 2019-08-29 16:03 UTC (permalink / raw)
To: Quentin Monnet
Cc: Alexei Starovoitov, Daniel Borkmann, bpf, netdev, oss-drivers,
Lorenz Bauer, Jakub Kicinski
In-Reply-To: <20190829105645.12285-3-quentin.monnet@netronome.com>
> Am 29.08.2019 um 12:56 schrieb Quentin Monnet <quentin.monnet@netronome.com>:
>
> +make_and_clean() {
> + echo -e "\$PWD: $PWD"
> + echo -e "command: make -s $* >/dev/null"
> + make $J -s $* >/dev/null
Would it make sense to set ERROR=1 if make produces a bpftool binary,
but still fails with a non-zero RC for whatever reason?
^ permalink raw reply
* Re: [PATCH net-next 2/2] net/mlx5e: Move local var definition into ifdef block
From: Vlad Buslov @ 2019-08-29 16:13 UTC (permalink / raw)
To: Sergei Shtylyov
Cc: Vlad Buslov, netdev@vger.kernel.org, jhs@mojatatu.com,
xiyou.wangcong@gmail.com, jiri@resnulli.us, davem@davemloft.net,
Saeed Mahameed, Ido Schimmel, tanhuazhong
In-Reply-To: <365fea71-4f35-188d-89e1-d8b97e3df141@cogentembedded.com>
On Thu 29 Aug 2019 at 12:29, Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> wrote:
> Hello!
>
> On 28.08.2019 19:41, Vlad Buslov wrote:
>
>> New local variable "struct flow_block_offload *f" was added to
>> mlx5e_setup_tc() in recent rtnl lock removal patches. The variable is used
>> in code that is only compiled when CONFIG_MLX5_ESWITCH is enabled. This
>> results compilation warning about unused variable when CONFIG_MLX5_ESWITCH
>> is not set. Move the variable definition into eswitch-specific code block
>> from the begging of mlx5e_setup_tc() function.
>
> Beginning?
Yep. Thanks for spotting it!
>
>> Fixes: c9f14470d048 ("net: sched: add API for registering unlocked offload block callbacks")
>> Reported-by: tanhuazhong <tanhuazhong@huawei.com>
>> Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
> [...]
>
> MBR, Sergei
^ permalink raw reply
* [PATCH net-next v2 1/2] net: sched: cls_matchall: cleanup flow_action before deallocating
From: Vlad Buslov @ 2019-08-29 16:15 UTC (permalink / raw)
To: netdev
Cc: jhs, xiyou.wangcong, jiri, davem, saeedm, idosch, sergei.shtylyov,
Vlad Buslov
In-Reply-To: <20190829161517.20935-1-vladbu@mellanox.com>
Recent rtnl lock removal patch changed flow_action infra to require proper
cleanup besides simple memory deallocation. However, matchall classifier
was not updated to call tc_cleanup_flow_action(). Add proper cleanup to
mall_replace_hw_filter() and mall_reoffload().
Fixes: 5a6ff4b13d59 ("net: sched: take reference to action dev before calling offloads")
Reported-by: Ido Schimmel <idosch@mellanox.com>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
---
net/sched/cls_matchall.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index 3266f25011cc..7fc2eb62aa98 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -111,6 +111,7 @@ static int mall_replace_hw_filter(struct tcf_proto *tp,
err = tc_setup_cb_add(block, tp, TC_SETUP_CLSMATCHALL, &cls_mall,
skip_sw, &head->flags, &head->in_hw_count, true);
+ tc_cleanup_flow_action(&cls_mall.rule->action);
kfree(cls_mall.rule);
if (err) {
@@ -313,6 +314,7 @@ static int mall_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
err = tc_setup_cb_reoffload(block, tp, add, cb, TC_SETUP_CLSMATCHALL,
&cls_mall, cb_priv, &head->flags,
&head->in_hw_count);
+ tc_cleanup_flow_action(&cls_mall.rule->action);
kfree(cls_mall.rule);
if (err)
--
2.21.0
^ permalink raw reply related
* [PATCH net-next v2 2/2] net/mlx5e: Move local var definition into ifdef block
From: Vlad Buslov @ 2019-08-29 16:15 UTC (permalink / raw)
To: netdev
Cc: jhs, xiyou.wangcong, jiri, davem, saeedm, idosch, sergei.shtylyov,
Vlad Buslov, tanhuazhong
In-Reply-To: <20190829161517.20935-1-vladbu@mellanox.com>
New local variable "struct flow_block_offload *f" was added to
mlx5e_setup_tc() in recent rtnl lock removal patches. The variable is used
in code that is only compiled when CONFIG_MLX5_ESWITCH is enabled. This
results compilation warning about unused variable when CONFIG_MLX5_ESWITCH
is not set. Move the variable definition into eswitch-specific code block
from the beginning of mlx5e_setup_tc() function.
Fixes: c9f14470d048 ("net: sched: add API for registering unlocked offload block callbacks")
Reported-by: tanhuazhong <tanhuazhong@huawei.com>
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
---
Notes:
Changes V1 -> V2:
- Fixed error in commit message.
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 8592b98d0e70..c10a1fc8e469 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3470,16 +3470,18 @@ static int mlx5e_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data)
{
struct mlx5e_priv *priv = netdev_priv(dev);
- struct flow_block_offload *f = type_data;
switch (type) {
#ifdef CONFIG_MLX5_ESWITCH
- case TC_SETUP_BLOCK:
+ case TC_SETUP_BLOCK: {
+ struct flow_block_offload *f = type_data;
+
f->unlocked_driver_cb = true;
return flow_block_cb_setup_simple(type_data,
&mlx5e_block_cb_list,
mlx5e_setup_tc_block_cb,
priv, priv, true);
+ }
#endif
case TC_SETUP_QDISC_MQPRIO:
return mlx5e_setup_tc_mqprio(priv, type_data);
--
2.21.0
^ permalink raw reply related
* [PATCH net-next v2 0/2] Fixes for unlocked cls hardware offload API refactoring
From: Vlad Buslov @ 2019-08-29 16:15 UTC (permalink / raw)
To: netdev
Cc: jhs, xiyou.wangcong, jiri, davem, saeedm, idosch, sergei.shtylyov,
Vlad Buslov
Two fixes for my "Refactor cls hardware offload API to support
rtnl-independent drivers" series.
Vlad Buslov (2):
net: sched: cls_matchall: cleanup flow_action before deallocating
net/mlx5e: Move local var definition into ifdef block
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 6 ++++--
net/sched/cls_matchall.c | 2 ++
2 files changed, 6 insertions(+), 2 deletions(-)
--
2.21.0
^ permalink raw reply
* Re: [PATCH v2 bpf-next 1/3] capability: introduce CAP_BPF and CAP_TRACING
From: Andy Lutomirski @ 2019-08-29 16:28 UTC (permalink / raw)
To: Daniel Borkmann
Cc: Alexei Starovoitov, David S. Miller, Peter Zijlstra,
Steven Rostedt, Network Development, bpf, kernel-team, Linux API
In-Reply-To: <536636ad-0baf-31e9-85fe-2591b65068df@iogearbox.net>
> On Aug 29, 2019, at 8:47 AM, Daniel Borkmann <daniel@iogearbox.net> wrote:
>
>> On 8/29/19 7:12 AM, Alexei Starovoitov wrote:
>> [...]
>> +/*
>> + * CAP_BPF allows the following BPF operations:
>> + * - Loading all types of BPF programs
>> + * - Creating all types of BPF maps except:
>> + * - stackmap that needs CAP_TRACING
>> + * - devmap that needs CAP_NET_ADMIN
>> + * - cpumap that needs CAP_SYS_ADMIN
>> + * - Advanced verifier features
>> + * - Indirect variable access
>> + * - Bounded loops
>> + * - BPF to BPF function calls
>> + * - Scalar precision tracking
>> + * - Larger complexity limits
>> + * - Dead code elimination
>> + * - And potentially other features
>> + * - Use of pointer-to-integer conversions in BPF programs
>> + * - Bypassing of speculation attack hardening measures
>> + * - Loading BPF Type Format (BTF) data
>> + * - Iterate system wide loaded programs, maps, BTF objects
>> + * - Retrieve xlated and JITed code of BPF programs
>> + * - Access maps and programs via id
>> + * - Use bpf_spin_lock() helper
>
> This is still very wide. Consider following example: app has CAP_BPF +
> CAP_NET_ADMIN. Why can't we in this case *only* allow loading networking
> related [plus generic] maps and programs? If it doesn't have CAP_TRACING,
> what would be a reason to allow loading it? Same vice versa. There are
> some misc program types like the infraread stuff, but they could continue
> to live under [CAP_BPF +] CAP_SYS_ADMIN as fallback. I think categorizing
> a specific list of prog and map types might be more clear than disallowing
> some helpers like below (e.g. why choice of bpf_probe_read() but not
> bpf_probe_write_user() etc).
Wow, I didn’t notice that bpf_probe_write_user() existed. That should
need something like CAP_PTRACE or CAP_SYS_ADMIN.
I'm starting to think that something like this:
https://lore.kernel.org/bpf/968f3551247a43e1104b198f2e58fb0595d425e7.1565040372.git.luto@kernel.org/
should maybe be finished before CAP_BPF happens at all. It really
looks like the bpf operations that need privilege need to get fully
catalogued and dealt with rather than just coming up with a new
capability that covers a huge swath.
(bpf_probe_write_user() is also terminally broken on architectures
like s390x, but that's not really relevant right now. I'm a bit
surprised it works on x86 with SMAP, though.)
^ permalink raw reply
* Re: [PATCH net-next] r8152: fix accessing skb after napi_gro_receive
From: Eric Dumazet @ 2019-08-29 16:31 UTC (permalink / raw)
To: Hayes Wang, netdev; +Cc: nic_swsd, linux-kernel
In-Reply-To: <1394712342-15778-302-Taiwan-albertk@realtek.com>
On 8/19/19 5:15 AM, Hayes Wang wrote:
> Fix accessing skb after napi_gro_receive which is caused by
> commit 47922fcde536 ("r8152: support skb_add_rx_frag").
>
> Fixes: 47922fcde536 ("r8152: support skb_add_rx_frag")
> Signed-off-by: Hayes Wang <hayeswang@realtek.com>
> ---
It is customary to add a tag to credit the reporter...
Something like :
Reported-by: ....
Thanks.
^ permalink raw reply
* Re: general protection fault in tls_sk_proto_close (2)
From: Jakub Kicinski @ 2019-08-29 16:43 UTC (permalink / raw)
To: Hillf Danton
Cc: john.fastabend, syzbot, aviadye, borisp, daniel, davejwatson,
davem, linux-kernel, netdev, syzkaller-bugs
In-Reply-To: <20190829035200.3340-1-hdanton@sina.com>
On Thu, 29 Aug 2019 11:52:00 +0800, Hillf Danton wrote:
> Alternatively work is done if sock is closed again. Anyway ctx is reset
> under sock's callback lock in write mode.
>
> --- a/net/tls/tls_main.c
> +++ b/net/tls/tls_main.c
> @@ -295,6 +295,8 @@ static void tls_sk_proto_close(struct so
> long timeo = sock_sndtimeo(sk, 0);
> bool free_ctx;
>
> + if (!ctx)
> + return;
> if (ctx->tx_conf == TLS_SW)
> tls_sw_cancel_work_tx(ctx);
That's no bueno, the real socket's close will never get called.
^ permalink raw reply
* [PATCH v3 01/11] checkpatch: check for nested (un)?likely() calls
From: Denis Efremov @ 2019-08-29 16:50 UTC (permalink / raw)
To: linux-kernel
Cc: Denis Efremov, Alexander Viro, Anton Altaparmakov,
Boris Ostrovsky, Boris Pismenny, Darrick J. Wong, David S. Miller,
Dennis Dalessandro, Dmitry Torokhov, Inaky Perez-Gonzalez,
Juergen Gross, Leon Romanovsky, Mike Marciniszyn, Pali Rohár,
Rob Clark, Saeed Mahameed, Sean Paul, linux-arm-msm,
linux-fsdevel, linux-input, linux-ntfs-dev, linux-rdma,
linux-wimax, linux-xfs, xen-devel, netdev, dri-devel, Joe Perches,
Andrew Morton, Andy Whitcroft
IS_ERR(), IS_ERR_OR_NULL(), IS_ERR_VALUE() and WARN*() already contain
unlikely() optimization internally. Thus, there is no point in calling
these functions and defines under likely()/unlikely().
This check is based on the coccinelle rule developed by Enrico Weigelt
https://lore.kernel.org/lkml/1559767582-11081-1-git-send-email-info@metux.net/
Signed-off-by: Denis Efremov <efremov@linux.com>
Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Whitcroft <apw@canonical.com>
---
scripts/checkpatch.pl | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 93a7edfe0f05..56969ce06df4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6480,6 +6480,12 @@ sub process {
"Using $1 should generally have parentheses around the comparison\n" . $herecurr);
}
+# nested likely/unlikely calls
+ if ($line =~ /\b(?:(?:un)?likely)\s*\(\s*!?\s*(IS_ERR(?:_OR_NULL|_VALUE)?|WARN)/) {
+ WARN("LIKELY_MISUSE",
+ "nested (un)?likely() calls, $1 already uses unlikely() internally\n" . $herecurr);
+ }
+
# whine mightly about in_atomic
if ($line =~ /\bin_atomic\s*\(/) {
if ($realfile =~ m@^drivers/@) {
--
2.21.0
^ permalink raw reply related
* [PATCH v3 03/11] net/mlx5e: Remove unlikely() from WARN*() condition
From: Denis Efremov @ 2019-08-29 16:50 UTC (permalink / raw)
To: linux-kernel
Cc: Denis Efremov, Boris Pismenny, Saeed Mahameed, Leon Romanovsky,
Joe Perches, Andrew Morton, netdev
In-Reply-To: <20190829165025.15750-1-efremov@linux.com>
"unlikely(WARN_ON_ONCE(x))" is excessive. WARN_ON_ONCE() already uses
unlikely() internally.
Signed-off-by: Denis Efremov <efremov@linux.com>
Cc: Boris Pismenny <borisp@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: netdev@vger.kernel.org
---
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
index 7833ddef0427..e5222d17df35 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
@@ -408,7 +408,7 @@ struct sk_buff *mlx5e_ktls_handle_tx_skb(struct net_device *netdev,
goto out;
tls_ctx = tls_get_ctx(skb->sk);
- if (unlikely(WARN_ON_ONCE(tls_ctx->netdev != netdev)))
+ if (WARN_ON_ONCE(tls_ctx->netdev != netdev))
goto err_out;
priv_tx = mlx5e_get_ktls_tx_priv_ctx(tls_ctx);
--
2.21.0
^ permalink raw reply related
* [PATCH v3 10/11] udp: Remove unlikely() from IS_ERR*() condition
From: Denis Efremov @ 2019-08-29 16:50 UTC (permalink / raw)
To: linux-kernel
Cc: Denis Efremov, David S. Miller, Joe Perches, Andrew Morton,
netdev
In-Reply-To: <20190829165025.15750-1-efremov@linux.com>
"unlikely(IS_ERR_OR_NULL(x))" is excessive. IS_ERR_OR_NULL() already uses
unlikely() internally.
Signed-off-by: Denis Efremov <efremov@linux.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: netdev@vger.kernel.org
---
include/net/udp.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/net/udp.h b/include/net/udp.h
index 79d141d2103b..bad74f780831 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -480,7 +480,7 @@ static inline struct sk_buff *udp_rcv_segment(struct sock *sk,
* CB fragment
*/
segs = __skb_gso_segment(skb, features, false);
- if (unlikely(IS_ERR_OR_NULL(segs))) {
+ if (IS_ERR_OR_NULL(segs)) {
int segs_nr = skb_shinfo(skb)->gso_segs;
atomic_add(segs_nr, &sk->sk_drops);
--
2.21.0
^ permalink raw reply related
* [PATCH net-next v2 0/3] net: tls: add socket diag
From: Davide Caratti @ 2019-08-29 16:48 UTC (permalink / raw)
To: borisp, jakub.kicinski, Eric Dumazet
Cc: aviadye, davejwatson, davem, john.fastabend, Matthieu Baerts,
netdev
The current kernel does not provide any diagnostic tool, except
getsockopt(TCP_ULP), to know more about TCP sockets that have an upper
layer protocol (ULP) on top of them. This series extends the set of
information exported by INET_DIAG_INFO, to include data that are
specific to the ULP (and that might be meaningful for debug/testing
purposes).
patch 1/3 ensures that the control plane reads/updates ULP specific data
using RCU.
patch 2/3 extends INET_DIAG_INFO and allows knowing the ULP name for
each TCP socket that has done setsockopt(TCP_ULP) successfully.
patch 3/3 extends kTLS to let programs like 'ss' know the protocol
version and the cipher in use.
Changes since v1:
- don't worry about grace period when accessing ulp_ops, thanks to
Jakub Kicinski and Eric Dumazet
- use rcu_dereference() to access ULP data in tls get_info(), and
test against NULL value, thanks to Jakub Kicinski
- move RCU protected section inside tls get_info(), thanks to Jakub
Kicinski
Changes since RFC:
- some coding style fixes, thanks to Jakub Kicinski
- add X_UNSPEC as lowest value of uAPI enums, thanks to Jakub Kicinski
- fix assignment of struct nlattr *start, thanks to Jakub Kicinski
- let tls dump RXCONF and TXCONF, suggested by Jakub Kicinski
- don't dump anything if TLS version or cipher are 0 (but still return a
constant size in get_aux_size()), thanks to Boris Pismenny
- constify first argument of get_info() and get_size()
- use RCU to access access ulp_ops, like it's done for ca_ops
- add patch 1/3, from Jakub Kicinski
Davide Caratti (2):
tcp: ulp: add functions to dump ulp-specific information
net: tls: export protocol version, cipher, tx_conf/rx_conf to socket
diag
Jakub Kicinski (1):
net/tls: use RCU protection on icsk->icsk_ulp_data
include/net/inet_connection_sock.h | 2 +-
include/net/tcp.h | 3 +
include/net/tls.h | 28 +++++++++-
include/uapi/linux/inet_diag.h | 9 +++
include/uapi/linux/tls.h | 15 +++++
net/core/sock_map.c | 2 +-
net/ipv4/tcp_diag.c | 52 ++++++++++++++++-
net/tls/tls_device.c | 2 +-
net/tls/tls_main.c | 90 +++++++++++++++++++++++++++---
9 files changed, 190 insertions(+), 13 deletions(-)
--
2.20.1
^ permalink raw reply
* [PATCH net-next v2 1/3] net/tls: use RCU protection on icsk->icsk_ulp_data
From: Davide Caratti @ 2019-08-29 16:48 UTC (permalink / raw)
To: borisp, jakub.kicinski, Eric Dumazet
Cc: aviadye, davejwatson, davem, john.fastabend, Matthieu Baerts,
netdev
In-Reply-To: <cover.1567095873.git.dcaratti@redhat.com>
From: Jakub Kicinski <jakub.kicinski@netronome.com>
We need to make sure context does not get freed while diag
code is interrogating it. Free struct tls_context with
kfree_rcu().
We add the __rcu annotation directly in icsk, and cast it
away in the datapath accessor. Presumably all ULPs will
do a similar thing.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
---
include/net/inet_connection_sock.h | 2 +-
include/net/tls.h | 9 +++++++--
net/core/sock_map.c | 2 +-
net/tls/tls_device.c | 2 +-
net/tls/tls_main.c | 26 +++++++++++++++++++-------
5 files changed, 29 insertions(+), 12 deletions(-)
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index c57d53e7e02c..895546058a20 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -97,7 +97,7 @@ struct inet_connection_sock {
const struct tcp_congestion_ops *icsk_ca_ops;
const struct inet_connection_sock_af_ops *icsk_af_ops;
const struct tcp_ulp_ops *icsk_ulp_ops;
- void *icsk_ulp_data;
+ void __rcu *icsk_ulp_data;
void (*icsk_clean_acked)(struct sock *sk, u32 acked_seq);
struct hlist_node icsk_listen_portaddr_node;
unsigned int (*icsk_sync_mss)(struct sock *sk, u32 pmtu);
diff --git a/include/net/tls.h b/include/net/tls.h
index 41b2d41bb1b8..4997742475cd 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -41,6 +41,7 @@
#include <linux/tcp.h>
#include <linux/skmsg.h>
#include <linux/netdevice.h>
+#include <linux/rcupdate.h>
#include <net/tcp.h>
#include <net/strparser.h>
@@ -290,6 +291,7 @@ struct tls_context {
struct list_head list;
refcount_t refcount;
+ struct rcu_head rcu;
};
enum tls_offload_ctx_dir {
@@ -348,7 +350,7 @@ struct tls_offload_context_rx {
#define TLS_OFFLOAD_CONTEXT_SIZE_RX \
(sizeof(struct tls_offload_context_rx) + TLS_DRIVER_STATE_SIZE_RX)
-void tls_ctx_free(struct tls_context *ctx);
+void tls_ctx_free(struct sock *sk, struct tls_context *ctx);
int wait_on_pending_writer(struct sock *sk, long *timeo);
int tls_sk_query(struct sock *sk, int optname, char __user *optval,
int __user *optlen);
@@ -467,7 +469,10 @@ static inline struct tls_context *tls_get_ctx(const struct sock *sk)
{
struct inet_connection_sock *icsk = inet_csk(sk);
- return icsk->icsk_ulp_data;
+ /* Use RCU on icsk_ulp_data only for sock diag code,
+ * TLS data path doesn't need rcu_dereference().
+ */
+ return (__force void *)icsk->icsk_ulp_data;
}
static inline void tls_advance_record_sn(struct sock *sk,
diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index 1330a7442e5b..01998860afaa 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -345,7 +345,7 @@ static int sock_map_update_common(struct bpf_map *map, u32 idx,
return -EINVAL;
if (unlikely(idx >= map->max_entries))
return -E2BIG;
- if (unlikely(icsk->icsk_ulp_data))
+ if (unlikely(rcu_access_pointer(icsk->icsk_ulp_data)))
return -EINVAL;
link = sk_psock_init_link();
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index a470df7ffcf9..e188139f0464 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -61,7 +61,7 @@ static void tls_device_free_ctx(struct tls_context *ctx)
if (ctx->rx_conf == TLS_HW)
kfree(tls_offload_ctx_rx(ctx));
- tls_ctx_free(ctx);
+ tls_ctx_free(NULL, ctx);
}
static void tls_device_gc_task(struct work_struct *work)
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 43252a801c3f..f8f2d2c3d627 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -251,14 +251,26 @@ static void tls_write_space(struct sock *sk)
ctx->sk_write_space(sk);
}
-void tls_ctx_free(struct tls_context *ctx)
+/**
+ * tls_ctx_free() - free TLS ULP context
+ * @sk: socket to with @ctx is attached
+ * @ctx: TLS context structure
+ *
+ * Free TLS context. If @sk is %NULL caller guarantees that the socket
+ * to which @ctx was attached has no outstanding references.
+ */
+void tls_ctx_free(struct sock *sk, struct tls_context *ctx)
{
if (!ctx)
return;
memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send));
memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv));
- kfree(ctx);
+
+ if (sk)
+ kfree_rcu(ctx, rcu);
+ else
+ kfree(ctx);
}
static void tls_sk_proto_cleanup(struct sock *sk,
@@ -306,7 +318,7 @@ static void tls_sk_proto_close(struct sock *sk, long timeout)
write_lock_bh(&sk->sk_callback_lock);
if (free_ctx)
- icsk->icsk_ulp_data = NULL;
+ rcu_assign_pointer(icsk->icsk_ulp_data, NULL);
sk->sk_prot = ctx->sk_proto;
if (sk->sk_write_space == tls_write_space)
sk->sk_write_space = ctx->sk_write_space;
@@ -321,7 +333,7 @@ static void tls_sk_proto_close(struct sock *sk, long timeout)
ctx->sk_proto_close(sk, timeout);
if (free_ctx)
- tls_ctx_free(ctx);
+ tls_ctx_free(sk, ctx);
}
static int do_tls_getsockopt_tx(struct sock *sk, char __user *optval,
@@ -610,7 +622,7 @@ static struct tls_context *create_ctx(struct sock *sk)
if (!ctx)
return NULL;
- icsk->icsk_ulp_data = ctx;
+ rcu_assign_pointer(icsk->icsk_ulp_data, ctx);
ctx->setsockopt = sk->sk_prot->setsockopt;
ctx->getsockopt = sk->sk_prot->getsockopt;
ctx->sk_proto_close = sk->sk_prot->close;
@@ -651,8 +663,8 @@ static void tls_hw_sk_destruct(struct sock *sk)
ctx->sk_destruct(sk);
/* Free ctx */
- tls_ctx_free(ctx);
- icsk->icsk_ulp_data = NULL;
+ rcu_assign_pointer(icsk->icsk_ulp_data, NULL);
+ tls_ctx_free(sk, ctx);
}
static int tls_hw_prot(struct sock *sk)
--
2.20.1
^ permalink raw reply related
* [PATCH net-next v2 2/3] tcp: ulp: add functions to dump ulp-specific information
From: Davide Caratti @ 2019-08-29 16:48 UTC (permalink / raw)
To: borisp, jakub.kicinski, Eric Dumazet
Cc: aviadye, davejwatson, davem, john.fastabend, Matthieu Baerts,
netdev
In-Reply-To: <cover.1567095873.git.dcaratti@redhat.com>
currently, only getsockopt(TCP_ULP) can be invoked to know if a ULP is on
top of a TCP socket. Extend idiag_get_aux() and idiag_get_aux_size(),
introduced by commit b37e88407c1d ("inet_diag: allow protocols to provide
additional data"), to report the ULP name and other information that can
be made available by the ULP through optional functions.
Users having CAP_NET_ADMIN privileges will then be able to retrieve this
information through inet_diag_handler, if they specify INET_DIAG_INFO in
the request.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
include/net/tcp.h | 3 ++
include/uapi/linux/inet_diag.h | 8 ++++++
net/ipv4/tcp_diag.c | 52 +++++++++++++++++++++++++++++++++-
3 files changed, 62 insertions(+), 1 deletion(-)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 77fe87f7a992..c9a3f9688223 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -2122,6 +2122,9 @@ struct tcp_ulp_ops {
void (*update)(struct sock *sk, struct proto *p);
/* cleanup ulp */
void (*release)(struct sock *sk);
+ /* diagnostic */
+ int (*get_info)(const struct sock *sk, struct sk_buff *skb);
+ size_t (*get_info_size)(const struct sock *sk);
char name[TCP_ULP_NAME_MAX];
struct module *owner;
diff --git a/include/uapi/linux/inet_diag.h b/include/uapi/linux/inet_diag.h
index e8baca85bac6..e2c6273274f3 100644
--- a/include/uapi/linux/inet_diag.h
+++ b/include/uapi/linux/inet_diag.h
@@ -153,11 +153,19 @@ enum {
INET_DIAG_BBRINFO, /* request as INET_DIAG_VEGASINFO */
INET_DIAG_CLASS_ID, /* request as INET_DIAG_TCLASS */
INET_DIAG_MD5SIG,
+ INET_DIAG_ULP_INFO,
__INET_DIAG_MAX,
};
#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
+enum {
+ INET_ULP_INFO_UNSPEC,
+ INET_ULP_INFO_NAME,
+ __INET_ULP_INFO_MAX,
+};
+#define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1)
+
/* INET_DIAG_MEM */
struct inet_diag_meminfo {
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index a3a386236d93..babc156deabb 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -81,13 +81,42 @@ static int tcp_diag_put_md5sig(struct sk_buff *skb,
}
#endif
+static int tcp_diag_put_ulp(struct sk_buff *skb, struct sock *sk,
+ const struct tcp_ulp_ops *ulp_ops)
+{
+ struct nlattr *nest;
+ int err;
+
+ nest = nla_nest_start_noflag(skb, INET_DIAG_ULP_INFO);
+ if (!nest)
+ return -EMSGSIZE;
+
+ err = nla_put_string(skb, INET_ULP_INFO_NAME, ulp_ops->name);
+ if (err)
+ goto nla_failure;
+
+ if (ulp_ops->get_info)
+ err = ulp_ops->get_info(sk, skb);
+ if (err)
+ goto nla_failure;
+
+ nla_nest_end(skb, nest);
+ return 0;
+
+nla_failure:
+ nla_nest_cancel(skb, nest);
+ return err;
+}
+
static int tcp_diag_get_aux(struct sock *sk, bool net_admin,
struct sk_buff *skb)
{
+ struct inet_connection_sock *icsk = inet_csk(sk);
+ int err = 0;
+
#ifdef CONFIG_TCP_MD5SIG
if (net_admin) {
struct tcp_md5sig_info *md5sig;
- int err = 0;
rcu_read_lock();
md5sig = rcu_dereference(tcp_sk(sk)->md5sig_info);
@@ -99,11 +128,21 @@ static int tcp_diag_get_aux(struct sock *sk, bool net_admin,
}
#endif
+ if (net_admin) {
+ const struct tcp_ulp_ops *ulp_ops;
+
+ ulp_ops = icsk->icsk_ulp_ops;
+ if (ulp_ops)
+ err = tcp_diag_put_ulp(skb, sk, ulp_ops);
+ if (err)
+ return err;
+ }
return 0;
}
static size_t tcp_diag_get_aux_size(struct sock *sk, bool net_admin)
{
+ struct inet_connection_sock *icsk = inet_csk(sk);
size_t size = 0;
#ifdef CONFIG_TCP_MD5SIG
@@ -124,6 +163,17 @@ static size_t tcp_diag_get_aux_size(struct sock *sk, bool net_admin)
}
#endif
+ if (net_admin) {
+ const struct tcp_ulp_ops *ulp_ops;
+
+ ulp_ops = icsk->icsk_ulp_ops;
+ if (ulp_ops) {
+ size += nla_total_size(0) +
+ nla_total_size(TCP_ULP_NAME_MAX);
+ if (ulp_ops->get_info_size)
+ size += ulp_ops->get_info_size(sk);
+ }
+ }
return size;
}
--
2.20.1
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