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-rw-r--r--drivers/net/ethernet/sgi/ioc3-eth.c1038
1 files changed, 519 insertions, 519 deletions
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 358e66b81926..deb636d653f3 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.
@@ -15,11 +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,
@@ -39,10 +32,10 @@
#include <linux/crc32.h>
#include <linux/mii.h>
#include <linux/in.h>
+#include <linux/io.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
-#include <linux/dma-mapping.h>
#include <linux/gfp.h>
#ifdef CONFIG_SERIAL_8250
@@ -55,32 +48,52 @@
#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>
-#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
- * 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)
+#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
+
+/* 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)
+#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 {
- struct ioc3 *regs;
+ 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;
- struct sk_buff *rx_skbs[512];
- struct sk_buff *tx_skbs[128];
+ 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 */
int rx_pi; /* RX producer index */
int tx_ci; /* TX consumer index */
@@ -102,190 +115,138 @@ 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);
+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 ioc3_private *ip, struct sk_buff **skb,
+ struct ioc3_erxbuf **rxb, dma_addr_t *rxb_dma)
{
- struct sk_buff *skb;
+ 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);
+ if (!new_skb)
+ return -ENOMEM;
+
+ /* 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);
- skb = alloc_skb(length + IOC3_CACHELINE - 1, gfp_mask);
- if (likely(skb)) {
- int offset = aligned_rx_skb_addr((unsigned long) skb->data);
- if (offset)
- skb_reserve(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;
- return skb;
+ 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;
}
-/* 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)
-
-/* DMA barrier to separate cached and uncached accesses. */
-#define BARRIER() \
- __asm__("sync" ::: "memory")
-
+#define ERBAR_VAL 0
+#endif
#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;
+ 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;
+ 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
+/* 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;
}
-/*
- * Write a byte to an iButton device
+/* 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;
@@ -293,26 +254,26 @@ 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");
+ pr_warn("NIC search failed (not fatal).\n");
*last = 0;
return 0;
}
@@ -323,16 +284,17 @@ static u64 nic_find(struct ioc3 *ioc3, 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(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 +304,7 @@ 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 +314,8 @@ 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 +329,12 @@ 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++) {
@@ -382,52 +345,50 @@ static int nic_init(struct ioc3 *ioc3)
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)
{
- 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);
}
if (tries < 0) {
- printk("Failed to read MAC address\n");
+ pr_err("Failed to read MAC address\n");
return;
}
/* 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];
}
-/*
- * 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 ...
*/
@@ -435,17 +396,21 @@ 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)
{
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)
@@ -462,31 +427,35 @@ 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)
{
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(&regs->micr) & MICR_BUSY)
+ ;
+ writel((phy << MICR_PHYADDR_SHIFT) | reg | MICR_READTRIG,
+ &regs->micr);
+ while (readl(&regs->micr) & MICR_BUSY)
+ ;
- return ioc3_r_midr_r() & MIDR_DATA_MASK;
+ return readl(&regs->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(&regs->micr) & MICR_BUSY)
+ ;
+ writel(data, &regs->midr_w);
+ writel((phy << MICR_PHYADDR_SHIFT) | reg, &regs->micr);
+ while (readl(&regs->micr) & MICR_BUSY)
+ ;
}
static int ioc3_mii_init(struct ioc3_private *ip);
@@ -494,23 +463,22 @@ 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(&regs->etcdc) & ETCDC_COLLCNT_MASK;
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.
@@ -526,7 +494,7 @@ 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;
@@ -537,12 +505,12 @@ 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);
@@ -551,14 +519,15 @@ 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);
@@ -572,10 +541,10 @@ 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;
+ dma_addr_t d;
u32 w0, err;
rxr = ip->rxr; /* Ring base */
@@ -583,64 +552,67 @@ 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) {
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(ip, &new_skb, &rxb, &d)) {
/* Ouch, drop packet and just recycle packet
- to keep the ring filled. */
+ * to keep the ring filled.
+ */
dev->stats.rx_dropped++;
new_skb = skb;
+ d = rxr[rx_entry];
goto next;
}
if (likely(dev->features & NETIF_F_RXCSUM))
ioc3_tcpudp_checksum(skb,
- w0 & ERXBUF_IPCKSUM_MASK, len);
+ 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 */
- /* 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 {
/* 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;
+ 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) & 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);
+ 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;
}
@@ -648,16 +620,16 @@ next:
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(&regs->etcir);
- tx_entry = (etcir >> 7) & 127;
+ tx_entry = (etcir >> 7) & TX_RING_MASK;
o_entry = ip->tx_ci;
packets = 0;
bytes = 0;
@@ -669,25 +641,24 @@ 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 = ioc3_r_etcir(); /* More pkts sent? */
- tx_entry = (etcir >> 7) & 127;
+ etcir = readl(&regs->etcir); /* More pkts sent? */
+ 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;
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
@@ -696,25 +667,33 @@ 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_free_rx_bufs(ip);
+ ioc3_clean_tx_ring(ip);
+
ioc3_init(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);
netif_wake_queue(dev);
@@ -723,45 +702,45 @@ 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)
+ * after the Tx thread.
+ */
+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(&regs->eisr);
+ writel(eisr, &regs->eisr);
+ readl(&regs->eisr); /* Flush */
if (eisr & (EISR_RXOFLO | EISR_RXBUFOFLO | EISR_RXMEMERR |
- EISR_RXPARERR | EISR_TXBUFUFLO | EISR_TXMEMERR))
- ioc3_error(dev, eisr);
+ EISR_RXPARERR | EISR_TXBUFUFLO | EISR_TXMEMERR))
+ 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;
+
+ spin_lock_irq(&ip->ioc3_lock);
if (ip->mii.full_duplex) {
- ioc3_w_etcsr(ETCSR_FD);
+ writel(ETCSR_FD, &regs->etcsr);
ip->emcr |= EMCR_DUPLEX;
} else {
- ioc3_w_etcsr(ETCSR_HD);
+ writel(ETCSR_HD, &regs->etcsr);
ip->emcr &= ~EMCR_DUPLEX;
}
- ioc3_w_emcr(ip->emcr);
+ writel(ip->emcr, &regs->emcr);
+
+ spin_unlock_irq(&ip->ioc3_lock);
}
static void ioc3_timer(struct timer_list *t)
@@ -772,12 +751,11 @@ 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
@@ -786,8 +764,8 @@ 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++) {
@@ -800,9 +778,9 @@ 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;
@@ -817,27 +795,27 @@ out:
static void ioc3_mii_start(struct ioc3_private *ip)
{
- ip->ioc3_timer.expires = jiffies + (12 * HZ)/10; /* 1.2 sec. */
+ ip->ioc3_timer.expires = jiffies + (12 * HZ) / 10; /* 1.2 sec. */
add_timer(&ip->ioc3_timer);
}
-static inline void ioc3_clean_rx_ring(struct ioc3_private *ip)
+static inline void ioc3_tx_unmap(struct ioc3_private *ip, int entry)
{
- 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++];
+ 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);
}
- 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;
- skb = ip->rx_skbs[i];
- rxb = (struct ioc3_erxbuf *) (skb->data - RX_OFFSET);
- rxb->w0 = 0;
+ 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);
}
}
@@ -846,9 +824,10 @@ 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) {
+ ioc3_tx_unmap(ip, i);
ip->tx_skbs[i] = NULL;
dev_kfree_skb_any(skb);
}
@@ -858,179 +837,137 @@ 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;
+ struct sk_buff *skb;
- if (ip->txr) {
- ioc3_clean_tx_ring(ip);
- free_pages((unsigned long)ip->txr, 2);
- ip->txr = NULL;
- }
-
- if (ip->rxr) {
- n_entry = ip->rx_ci;
- rx_entry = ip->rx_pi;
-
- while (n_entry != rx_entry) {
- skb = ip->rx_skbs[n_entry];
- if (skb)
- dev_kfree_skb_any(skb);
+ n_entry = ip->rx_ci;
+ rx_entry = ip->rx_pi;
- n_entry = (n_entry + 1) & 511;
+ while (n_entry != rx_entry) {
+ skb = ip->rx_skbs[n_entry];
+ 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);
}
- free_page((unsigned long)ip->rxr);
- ip->rxr = NULL;
+ n_entry = (n_entry + 1) & RX_RING_MASK;
}
}
-static void ioc3_alloc_rings(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;
- unsigned long *rxr;
+ dma_addr_t d;
int i;
- if (ip->rxr == NULL) {
- /* Allocate and initialize rx ring. 4kb = 512 entries */
- ip->rxr = (unsigned long *) get_zeroed_page(GFP_ATOMIC);
- rxr = ip->rxr;
- if (!rxr)
- printk("ioc3_alloc_rings(): get_zeroed_page() failed!\n");
-
- /* 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. */
- 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;
-
- /* Because we reserve afterwards. */
- skb_put(skb, (1664 + RX_OFFSET));
- rxb = (struct ioc3_erxbuf *) skb->data;
- rxr[i] = cpu_to_be64(ioc3_map(rxb, 1));
- skb_reserve(skb, RX_OFFSET);
- }
- ip->rx_ci = 0;
- ip->rx_pi = RX_BUFFS;
- }
+ /* 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.
+ */
+ for (i = 0; i < RX_BUFFS; i++) {
+ if (ioc3_alloc_skb(ip, &ip->rx_skbs[i], &rxb, &d))
+ return -ENOMEM;
- if (ip->txr == NULL) {
- /* 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");
- ip->tx_pi = 0;
- ip->tx_ci = 0;
+ rxb->w0 = 0; /* Clear valid flag */
+ ip->rxr[i] = cpu_to_be64(ioc3_map(d, PCI64_ATTR_BAR));
}
-}
-
-static void ioc3_init_rings(struct net_device *dev)
-{
- struct ioc3_private *ip = netdev_priv(dev);
- struct ioc3 *ioc3 = ip->regs;
- unsigned long ring;
-
- ioc3_free_rings(ip);
- ioc3_alloc_rings(dev);
-
- ioc3_clean_rx_ring(ip);
- ioc3_clean_tx_ring(ip);
+ ip->rx_ci = 0;
+ ip->rx_pi = RX_BUFFS;
- /* 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);
-
- 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 */
+ return 0;
}
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(&regs->emcr) | (EMCR_BUFSIZ | EMCR_RAMPAR), &regs->emcr);
+ readl(&regs->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(&regs->emcr) & ~EMCR_BUFSIZ, &regs->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, &regs->emcr); /* Reset */
+ readl(&regs->emcr); /* Flush WB */
udelay(4); /* Give it time ... */
- ioc3_w_emcr(0);
- (void) ioc3_r_emcr();
+ writel(0, &regs->emcr);
+ readl(&regs->emcr);
/* Misc registers */
-#ifdef CONFIG_SGI_IP27
- ioc3_w_erbar(PCI64_ATTR_BAR >> 32); /* Barrier on last store */
-#else
- ioc3_w_erbar(0); /* Let PCI API get it right */
-#endif
- (void) ioc3_r_etcdc(); /* Clear on read */
- ioc3_w_ercsr(15); /* RX low watermark */
- ioc3_w_ertr(0); /* Interrupt immediately */
+ writel(ERBAR_VAL, &regs->erbar);
+ readl(&regs->etcdc); /* Clear on read */
+ writel(15, &regs->ercsr); /* RX low watermark */
+ writel(0, &regs->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, &regs->ehar_h);
+ writel(ip->ehar_l, &regs->ehar_l);
+ writel(42, &regs->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_dma, PCI64_ATTR_PREC);
+ writel(ring >> 32, &regs->erbr_h);
+ writel(ring & 0xffffffff, &regs->erbr_l);
+ writel(ip->rx_ci << 3, &regs->ercir);
+ writel((ip->rx_pi << 3) | ERPIR_ARM, &regs->erpir);
+
+ ring = ioc3_map(ip->txr_dma, PCI64_ATTR_PREC);
+
+ ip->txqlen = 0; /* nothing queued */
+
+ /* Now the tx ring base, consume & produce registers. */
+ writel(ring >> 32, &regs->etbr_h);
+ writel(ring & 0xffffffff, &regs->etbr_l);
+ writel(ip->tx_pi << 7, &regs->etpir);
+ writel(ip->tx_ci << 7, &regs->etcir);
+ readl(&regs->etcir); /* Flush */
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();
+ EMCR_TXEN | EMCR_RXDMAEN | EMCR_RXEN | EMCR_PADEN;
+ writel(ip->emcr, &regs->emcr);
+ writel(EISR_RXTIMERINT | EISR_RXOFLO | EISR_RXBUFOFLO |
+ EISR_RXMEMERR | EISR_RXPARERR | EISR_TXBUFUFLO |
+ EISR_TXEXPLICIT | EISR_TXMEMERR, &regs->eier);
+ readl(&regs->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, &regs->emcr); /* Shutup */
+ writel(0, &regs->eier); /* Disable interrupts */
+ readl(&regs->eier); /* Flush */
}
static int ioc3_open(struct net_device *dev)
@@ -1038,14 +975,20 @@ 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;
}
ip->ehar_h = 0;
ip->ehar_l = 0;
+
ioc3_init(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);
netif_start_queue(dev);
@@ -1063,12 +1006,13 @@ 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;
}
-/*
- * 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
*
@@ -1085,7 +1029,7 @@ 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);
}
@@ -1095,15 +1039,14 @@ 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()).
@@ -1140,31 +1083,32 @@ 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;
- 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)
{
- /*
- * We need to recognice and treat the fourth MENET serial as it
+ 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
* 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
@@ -1175,33 +1119,34 @@ 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
*/
- 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);
@@ -1236,15 +1181,15 @@ 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;
@@ -1270,19 +1215,22 @@ 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;
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;
}
- ip->regs = ioc3;
+ ip->regs = &ioc3->eth;
+ ip->ssram = ioc3->ssram;
+ ip->all_regs = ioc3;
#ifdef CONFIG_SERIAL_8250
ioc3_serial_probe(pdev, ioc3);
@@ -1292,6 +1240,26 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
timer_setup(&ip->ioc3_timer, ioc3_timer, 0);
ioc3_stop(ip);
+
+ /* Allocate rx ring. 4kb = 512 entries, must be 4kb aligned */
+ 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;
+ goto out_stop;
+ }
+
+ /* Allocate tx rings. 16kb = 128 bufs, must be 16kb aligned */
+ 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;
+ goto out_stop;
+ }
+
ioc3_init(dev);
ip->pdev = pdev;
@@ -1305,7 +1273,7 @@ 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;
@@ -1335,24 +1303,27 @@ 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;
out_stop:
- ioc3_stop(ip);
del_timer_sync(&ip->ioc3_timer);
- ioc3_free_rings(ip);
+ 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:
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:
@@ -1363,16 +1334,19 @@ 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;
+
+ dma_direct_free_pages(ip->dma_dev, RX_RING_SIZE, ip->rxr,
+ ip->rxr_dma, 0);
+ 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);
- iounmap(ioc3);
+ 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 ...
*/
}
@@ -1392,16 +1366,14 @@ 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;
- uint32_t w0 = 0;
+ unsigned long data;
+ unsigned int len;
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
@@ -1412,25 +1384,23 @@ 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];
- /* 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 */
+ * 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, csum_fold(ehsum));
csum = (csum & 0xffff) + (csum >> 16); /* Fold again */
csum = (csum & 0xffff) + (csum >> 16);
@@ -1450,7 +1420,7 @@ 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;
@@ -1470,47 +1440,78 @@ 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);
+ 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));
+ (s2 << ETXD_B2CNT_SHIFT));
+ 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));
}
- BARRIER();
+ 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;
- ioc3_w_etpir(produce << 7); /* Fire ... */
+ 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);
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)
{
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);
ioc3_stop(ip);
+ ioc3_free_rx_bufs(ip);
+ ioc3_clean_tx_ring(ip);
+
ioc3_init(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);
@@ -1519,16 +1520,14 @@ 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);
@@ -1542,8 +1541,8 @@ 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);
@@ -1623,27 +1622,28 @@ 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. */
+ spin_lock_irq(&ip->ioc3_lock);
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
ip->emcr |= EMCR_PROMISC;
- ioc3_w_emcr(ip->emcr);
- (void) ioc3_r_emcr();
+ writel(ip->emcr, &regs->emcr);
+ readl(&regs->emcr);
} else {
ip->emcr &= ~EMCR_PROMISC;
- ioc3_w_emcr(ip->emcr); /* Clear promiscuous. */
- (void) ioc3_r_emcr();
+ writel(ip->emcr, &regs->emcr); /* Clear promiscuous. */
+ readl(&regs->emcr);
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 {
@@ -1653,11 +1653,11 @@ 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, &regs->ehar_h);
+ writel(ip->ehar_l, &regs->ehar_l);
}
- netif_wake_queue(dev); /* Let us get going again. */
+ spin_unlock_irq(&ip->ioc3_lock);
}
module_pci_driver(ioc3_driver);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.