+++ /dev/null
-/* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver.
- *
- * Copyright (C) 2002 David S. Miller (davem@redhat.com)
- * Copyright (C) 2004 Pekka Pietikainen (pp@ee.oulu.fi)
- * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
- * Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org)
- * Copyright (C) 2006 Broadcom Corporation.
- * Copyright (C) 2007 Michael Buesch <m@bues.ch>
- *
- * Distribute under GPL.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/ethtool.h>
-#include <linux/mii.h>
-#include <linux/if_ether.h>
-#include <linux/if_vlan.h>
-#include <linux/etherdevice.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-#include <linux/ssb/ssb.h>
-#include <linux/slab.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-
-#include "b44.h"
-
-#define DRV_MODULE_NAME "b44"
-#define DRV_MODULE_VERSION "2.0"
-#define DRV_DESCRIPTION "Broadcom 44xx/47xx 10/100 PCI ethernet driver"
-
-#define B44_DEF_MSG_ENABLE \
- (NETIF_MSG_DRV | \
- NETIF_MSG_PROBE | \
- NETIF_MSG_LINK | \
- NETIF_MSG_TIMER | \
- NETIF_MSG_IFDOWN | \
- NETIF_MSG_IFUP | \
- NETIF_MSG_RX_ERR | \
- NETIF_MSG_TX_ERR)
-
-/* length of time before we decide the hardware is borked,
- * and dev->tx_timeout() should be called to fix the problem
- */
-#define B44_TX_TIMEOUT (5 * HZ)
-
-/* hardware minimum and maximum for a single frame's data payload */
-#define B44_MIN_MTU 60
-#define B44_MAX_MTU 1500
-
-#define B44_RX_RING_SIZE 512
-#define B44_DEF_RX_RING_PENDING 200
-#define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \
- B44_RX_RING_SIZE)
-#define B44_TX_RING_SIZE 512
-#define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1)
-#define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \
- B44_TX_RING_SIZE)
-
-#define TX_RING_GAP(BP) \
- (B44_TX_RING_SIZE - (BP)->tx_pending)
-#define TX_BUFFS_AVAIL(BP) \
- (((BP)->tx_cons <= (BP)->tx_prod) ? \
- (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \
- (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
-#define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
-
-#define RX_PKT_OFFSET (RX_HEADER_LEN + 2)
-#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET)
-
-/* minimum number of free TX descriptors required to wake up TX process */
-#define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
-
-/* b44 internal pattern match filter info */
-#define B44_PATTERN_BASE 0x400
-#define B44_PATTERN_SIZE 0x80
-#define B44_PMASK_BASE 0x600
-#define B44_PMASK_SIZE 0x10
-#define B44_MAX_PATTERNS 16
-#define B44_ETHIPV6UDP_HLEN 62
-#define B44_ETHIPV4UDP_HLEN 42
-
-MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller");
-MODULE_DESCRIPTION(DRV_DESCRIPTION);
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_MODULE_VERSION);
-
-static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */
-module_param(b44_debug, int, 0);
-MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
-
-
-#ifdef CONFIG_B44_PCI
-static DEFINE_PCI_DEVICE_TABLE(b44_pci_tbl) = {
- { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) },
- { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) },
- { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) },
- { 0 } /* terminate list with empty entry */
-};
-MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
-
-static struct pci_driver b44_pci_driver = {
- .name = DRV_MODULE_NAME,
- .id_table = b44_pci_tbl,
-};
-#endif /* CONFIG_B44_PCI */
-
-static const struct ssb_device_id b44_ssb_tbl[] = {
- SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV),
- SSB_DEVTABLE_END
-};
-MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl);
-
-static void b44_halt(struct b44 *);
-static void b44_init_rings(struct b44 *);
-
-#define B44_FULL_RESET 1
-#define B44_FULL_RESET_SKIP_PHY 2
-#define B44_PARTIAL_RESET 3
-#define B44_CHIP_RESET_FULL 4
-#define B44_CHIP_RESET_PARTIAL 5
-
-static void b44_init_hw(struct b44 *, int);
-
-static int dma_desc_sync_size;
-static int instance;
-
-static const char b44_gstrings[][ETH_GSTRING_LEN] = {
-#define _B44(x...) # x,
-B44_STAT_REG_DECLARE
-#undef _B44
-};
-
-static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev,
- dma_addr_t dma_base,
- unsigned long offset,
- enum dma_data_direction dir)
-{
- dma_sync_single_for_device(sdev->dma_dev, dma_base + offset,
- dma_desc_sync_size, dir);
-}
-
-static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev,
- dma_addr_t dma_base,
- unsigned long offset,
- enum dma_data_direction dir)
-{
- dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset,
- dma_desc_sync_size, dir);
-}
-
-static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
-{
- return ssb_read32(bp->sdev, reg);
-}
-
-static inline void bw32(const struct b44 *bp,
- unsigned long reg, unsigned long val)
-{
- ssb_write32(bp->sdev, reg, val);
-}
-
-static int b44_wait_bit(struct b44 *bp, unsigned long reg,
- u32 bit, unsigned long timeout, const int clear)
-{
- unsigned long i;
-
- for (i = 0; i < timeout; i++) {
- u32 val = br32(bp, reg);
-
- if (clear && !(val & bit))
- break;
- if (!clear && (val & bit))
- break;
- udelay(10);
- }
- if (i == timeout) {
- if (net_ratelimit())
- netdev_err(bp->dev, "BUG! Timeout waiting for bit %08x of register %lx to %s\n",
- bit, reg, clear ? "clear" : "set");
-
- return -ENODEV;
- }
- return 0;
-}
-
-static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
-{
- u32 val;
-
- bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ |
- (index << CAM_CTRL_INDEX_SHIFT)));
-
- b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
-
- val = br32(bp, B44_CAM_DATA_LO);
-
- data[2] = (val >> 24) & 0xFF;
- data[3] = (val >> 16) & 0xFF;
- data[4] = (val >> 8) & 0xFF;
- data[5] = (val >> 0) & 0xFF;
-
- val = br32(bp, B44_CAM_DATA_HI);
-
- data[0] = (val >> 8) & 0xFF;
- data[1] = (val >> 0) & 0xFF;
-}
-
-static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
-{
- u32 val;
-
- val = ((u32) data[2]) << 24;
- val |= ((u32) data[3]) << 16;
- val |= ((u32) data[4]) << 8;
- val |= ((u32) data[5]) << 0;
- bw32(bp, B44_CAM_DATA_LO, val);
- val = (CAM_DATA_HI_VALID |
- (((u32) data[0]) << 8) |
- (((u32) data[1]) << 0));
- bw32(bp, B44_CAM_DATA_HI, val);
- bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE |
- (index << CAM_CTRL_INDEX_SHIFT)));
- b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
-}
-
-static inline void __b44_disable_ints(struct b44 *bp)
-{
- bw32(bp, B44_IMASK, 0);
-}
-
-static void b44_disable_ints(struct b44 *bp)
-{
- __b44_disable_ints(bp);
-
- /* Flush posted writes. */
- br32(bp, B44_IMASK);
-}
-
-static void b44_enable_ints(struct b44 *bp)
-{
- bw32(bp, B44_IMASK, bp->imask);
-}
-
-static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
-{
- int err;
-
- bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
- bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
- (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
- (phy_addr << MDIO_DATA_PMD_SHIFT) |
- (reg << MDIO_DATA_RA_SHIFT) |
- (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
- err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
- *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA;
-
- return err;
-}
-
-static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
-{
- bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
- bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
- (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
- (phy_addr << MDIO_DATA_PMD_SHIFT) |
- (reg << MDIO_DATA_RA_SHIFT) |
- (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
- (val & MDIO_DATA_DATA)));
- return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
-}
-
-static inline int b44_readphy(struct b44 *bp, int reg, u32 *val)
-{
- if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
- return 0;
-
- return __b44_readphy(bp, bp->phy_addr, reg, val);
-}
-
-static inline int b44_writephy(struct b44 *bp, int reg, u32 val)
-{
- if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
- return 0;
-
- return __b44_writephy(bp, bp->phy_addr, reg, val);
-}
-
-/* miilib interface */
-static int b44_mii_read(struct net_device *dev, int phy_id, int location)
-{
- u32 val;
- struct b44 *bp = netdev_priv(dev);
- int rc = __b44_readphy(bp, phy_id, location, &val);
- if (rc)
- return 0xffffffff;
- return val;
-}
-
-static void b44_mii_write(struct net_device *dev, int phy_id, int location,
- int val)
-{
- struct b44 *bp = netdev_priv(dev);
- __b44_writephy(bp, phy_id, location, val);
-}
-
-static int b44_phy_reset(struct b44 *bp)
-{
- u32 val;
- int err;
-
- if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
- return 0;
- err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
- if (err)
- return err;
- udelay(100);
- err = b44_readphy(bp, MII_BMCR, &val);
- if (!err) {
- if (val & BMCR_RESET) {
- netdev_err(bp->dev, "PHY Reset would not complete\n");
- err = -ENODEV;
- }
- }
-
- return err;
-}
-
-static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
-{
- u32 val;
-
- bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE);
- bp->flags |= pause_flags;
-
- val = br32(bp, B44_RXCONFIG);
- if (pause_flags & B44_FLAG_RX_PAUSE)
- val |= RXCONFIG_FLOW;
- else
- val &= ~RXCONFIG_FLOW;
- bw32(bp, B44_RXCONFIG, val);
-
- val = br32(bp, B44_MAC_FLOW);
- if (pause_flags & B44_FLAG_TX_PAUSE)
- val |= (MAC_FLOW_PAUSE_ENAB |
- (0xc0 & MAC_FLOW_RX_HI_WATER));
- else
- val &= ~MAC_FLOW_PAUSE_ENAB;
- bw32(bp, B44_MAC_FLOW, val);
-}
-
-static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
-{
- u32 pause_enab = 0;
-
- /* The driver supports only rx pause by default because
- the b44 mac tx pause mechanism generates excessive
- pause frames.
- Use ethtool to turn on b44 tx pause if necessary.
- */
- if ((local & ADVERTISE_PAUSE_CAP) &&
- (local & ADVERTISE_PAUSE_ASYM)){
- if ((remote & LPA_PAUSE_ASYM) &&
- !(remote & LPA_PAUSE_CAP))
- pause_enab |= B44_FLAG_RX_PAUSE;
- }
-
- __b44_set_flow_ctrl(bp, pause_enab);
-}
-
-#ifdef CONFIG_BCM47XX
-#include <asm/mach-bcm47xx/nvram.h>
-static void b44_wap54g10_workaround(struct b44 *bp)
-{
- char buf[20];
- u32 val;
- int err;
-
- /*
- * workaround for bad hardware design in Linksys WAP54G v1.0
- * see https://dev.openwrt.org/ticket/146
- * check and reset bit "isolate"
- */
- if (nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
- return;
- if (simple_strtoul(buf, NULL, 0) == 2) {
- err = __b44_readphy(bp, 0, MII_BMCR, &val);
- if (err)
- goto error;
- if (!(val & BMCR_ISOLATE))
- return;
- val &= ~BMCR_ISOLATE;
- err = __b44_writephy(bp, 0, MII_BMCR, val);
- if (err)
- goto error;
- }
- return;
-error:
- pr_warning("PHY: cannot reset MII transceiver isolate bit\n");
-}
-#else
-static inline void b44_wap54g10_workaround(struct b44 *bp)
-{
-}
-#endif
-
-static int b44_setup_phy(struct b44 *bp)
-{
- u32 val;
- int err;
-
- b44_wap54g10_workaround(bp);
-
- if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
- return 0;
- if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
- goto out;
- if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
- val & MII_ALEDCTRL_ALLMSK)) != 0)
- goto out;
- if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0)
- goto out;
- if ((err = b44_writephy(bp, B44_MII_TLEDCTRL,
- val | MII_TLEDCTRL_ENABLE)) != 0)
- goto out;
-
- if (!(bp->flags & B44_FLAG_FORCE_LINK)) {
- u32 adv = ADVERTISE_CSMA;
-
- if (bp->flags & B44_FLAG_ADV_10HALF)
- adv |= ADVERTISE_10HALF;
- if (bp->flags & B44_FLAG_ADV_10FULL)
- adv |= ADVERTISE_10FULL;
- if (bp->flags & B44_FLAG_ADV_100HALF)
- adv |= ADVERTISE_100HALF;
- if (bp->flags & B44_FLAG_ADV_100FULL)
- adv |= ADVERTISE_100FULL;
-
- if (bp->flags & B44_FLAG_PAUSE_AUTO)
- adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
-
- if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0)
- goto out;
- if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE |
- BMCR_ANRESTART))) != 0)
- goto out;
- } else {
- u32 bmcr;
-
- if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0)
- goto out;
- bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100);
- if (bp->flags & B44_FLAG_100_BASE_T)
- bmcr |= BMCR_SPEED100;
- if (bp->flags & B44_FLAG_FULL_DUPLEX)
- bmcr |= BMCR_FULLDPLX;
- if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0)
- goto out;
-
- /* Since we will not be negotiating there is no safe way
- * to determine if the link partner supports flow control
- * or not. So just disable it completely in this case.
- */
- b44_set_flow_ctrl(bp, 0, 0);
- }
-
-out:
- return err;
-}
-
-static void b44_stats_update(struct b44 *bp)
-{
- unsigned long reg;
- u32 *val;
-
- val = &bp->hw_stats.tx_good_octets;
- for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) {
- *val++ += br32(bp, reg);
- }
-
- /* Pad */
- reg += 8*4UL;
-
- for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) {
- *val++ += br32(bp, reg);
- }
-}
-
-static void b44_link_report(struct b44 *bp)
-{
- if (!netif_carrier_ok(bp->dev)) {
- netdev_info(bp->dev, "Link is down\n");
- } else {
- netdev_info(bp->dev, "Link is up at %d Mbps, %s duplex\n",
- (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10,
- (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half");
-
- netdev_info(bp->dev, "Flow control is %s for TX and %s for RX\n",
- (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off",
- (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off");
- }
-}
-
-static void b44_check_phy(struct b44 *bp)
-{
- u32 bmsr, aux;
-
- if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) {
- bp->flags |= B44_FLAG_100_BASE_T;
- bp->flags |= B44_FLAG_FULL_DUPLEX;
- if (!netif_carrier_ok(bp->dev)) {
- u32 val = br32(bp, B44_TX_CTRL);
- val |= TX_CTRL_DUPLEX;
- bw32(bp, B44_TX_CTRL, val);
- netif_carrier_on(bp->dev);
- b44_link_report(bp);
- }
- return;
- }
-
- if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
- !b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
- (bmsr != 0xffff)) {
- if (aux & MII_AUXCTRL_SPEED)
- bp->flags |= B44_FLAG_100_BASE_T;
- else
- bp->flags &= ~B44_FLAG_100_BASE_T;
- if (aux & MII_AUXCTRL_DUPLEX)
- bp->flags |= B44_FLAG_FULL_DUPLEX;
- else
- bp->flags &= ~B44_FLAG_FULL_DUPLEX;
-
- if (!netif_carrier_ok(bp->dev) &&
- (bmsr & BMSR_LSTATUS)) {
- u32 val = br32(bp, B44_TX_CTRL);
- u32 local_adv, remote_adv;
-
- if (bp->flags & B44_FLAG_FULL_DUPLEX)
- val |= TX_CTRL_DUPLEX;
- else
- val &= ~TX_CTRL_DUPLEX;
- bw32(bp, B44_TX_CTRL, val);
-
- if (!(bp->flags & B44_FLAG_FORCE_LINK) &&
- !b44_readphy(bp, MII_ADVERTISE, &local_adv) &&
- !b44_readphy(bp, MII_LPA, &remote_adv))
- b44_set_flow_ctrl(bp, local_adv, remote_adv);
-
- /* Link now up */
- netif_carrier_on(bp->dev);
- b44_link_report(bp);
- } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) {
- /* Link now down */
- netif_carrier_off(bp->dev);
- b44_link_report(bp);
- }
-
- if (bmsr & BMSR_RFAULT)
- netdev_warn(bp->dev, "Remote fault detected in PHY\n");
- if (bmsr & BMSR_JCD)
- netdev_warn(bp->dev, "Jabber detected in PHY\n");
- }
-}
-
-static void b44_timer(unsigned long __opaque)
-{
- struct b44 *bp = (struct b44 *) __opaque;
-
- spin_lock_irq(&bp->lock);
-
- b44_check_phy(bp);
-
- b44_stats_update(bp);
-
- spin_unlock_irq(&bp->lock);
-
- mod_timer(&bp->timer, round_jiffies(jiffies + HZ));
-}
-
-static void b44_tx(struct b44 *bp)
-{
- u32 cur, cons;
-
- cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
- cur /= sizeof(struct dma_desc);
-
- /* XXX needs updating when NETIF_F_SG is supported */
- for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) {
- struct ring_info *rp = &bp->tx_buffers[cons];
- struct sk_buff *skb = rp->skb;
-
- BUG_ON(skb == NULL);
-
- dma_unmap_single(bp->sdev->dma_dev,
- rp->mapping,
- skb->len,
- DMA_TO_DEVICE);
- rp->skb = NULL;
- dev_kfree_skb(skb);
- }
-
- bp->tx_cons = cons;
- if (netif_queue_stopped(bp->dev) &&
- TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
- netif_wake_queue(bp->dev);
-
- bw32(bp, B44_GPTIMER, 0);
-}
-
-/* Works like this. This chip writes a 'struct rx_header" 30 bytes
- * before the DMA address you give it. So we allocate 30 more bytes
- * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then
- * point the chip at 30 bytes past where the rx_header will go.
- */
-static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
-{
- struct dma_desc *dp;
- struct ring_info *src_map, *map;
- struct rx_header *rh;
- struct sk_buff *skb;
- dma_addr_t mapping;
- int dest_idx;
- u32 ctrl;
-
- src_map = NULL;
- if (src_idx >= 0)
- src_map = &bp->rx_buffers[src_idx];
- dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
- map = &bp->rx_buffers[dest_idx];
- skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ);
- if (skb == NULL)
- return -ENOMEM;
-
- mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
- RX_PKT_BUF_SZ,
- DMA_FROM_DEVICE);
-
- /* Hardware bug work-around, the chip is unable to do PCI DMA
- to/from anything above 1GB :-( */
- if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
- mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
- /* Sigh... */
- if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
- dma_unmap_single(bp->sdev->dma_dev, mapping,
- RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
- dev_kfree_skb_any(skb);
- skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA);
- if (skb == NULL)
- return -ENOMEM;
- mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
- RX_PKT_BUF_SZ,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
- mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
- if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
- dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
- dev_kfree_skb_any(skb);
- return -ENOMEM;
- }
- bp->force_copybreak = 1;
- }
-
- rh = (struct rx_header *) skb->data;
-
- rh->len = 0;
- rh->flags = 0;
-
- map->skb = skb;
- map->mapping = mapping;
-
- if (src_map != NULL)
- src_map->skb = NULL;
-
- ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ);
- if (dest_idx == (B44_RX_RING_SIZE - 1))
- ctrl |= DESC_CTRL_EOT;
-
- dp = &bp->rx_ring[dest_idx];
- dp->ctrl = cpu_to_le32(ctrl);
- dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset);
-
- if (bp->flags & B44_FLAG_RX_RING_HACK)
- b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
- dest_idx * sizeof(*dp),
- DMA_BIDIRECTIONAL);
-
- return RX_PKT_BUF_SZ;
-}
-
-static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
-{
- struct dma_desc *src_desc, *dest_desc;
- struct ring_info *src_map, *dest_map;
- struct rx_header *rh;
- int dest_idx;
- __le32 ctrl;
-
- dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
- dest_desc = &bp->rx_ring[dest_idx];
- dest_map = &bp->rx_buffers[dest_idx];
- src_desc = &bp->rx_ring[src_idx];
- src_map = &bp->rx_buffers[src_idx];
-
- dest_map->skb = src_map->skb;
- rh = (struct rx_header *) src_map->skb->data;
- rh->len = 0;
- rh->flags = 0;
- dest_map->mapping = src_map->mapping;
-
- if (bp->flags & B44_FLAG_RX_RING_HACK)
- b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma,
- src_idx * sizeof(*src_desc),
- DMA_BIDIRECTIONAL);
-
- ctrl = src_desc->ctrl;
- if (dest_idx == (B44_RX_RING_SIZE - 1))
- ctrl |= cpu_to_le32(DESC_CTRL_EOT);
- else
- ctrl &= cpu_to_le32(~DESC_CTRL_EOT);
-
- dest_desc->ctrl = ctrl;
- dest_desc->addr = src_desc->addr;
-
- src_map->skb = NULL;
-
- if (bp->flags & B44_FLAG_RX_RING_HACK)
- b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
- dest_idx * sizeof(*dest_desc),
- DMA_BIDIRECTIONAL);
-
- dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping,
- RX_PKT_BUF_SZ,
- DMA_FROM_DEVICE);
-}
-
-static int b44_rx(struct b44 *bp, int budget)
-{
- int received;
- u32 cons, prod;
-
- received = 0;
- prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK;
- prod /= sizeof(struct dma_desc);
- cons = bp->rx_cons;
-
- while (cons != prod && budget > 0) {
- struct ring_info *rp = &bp->rx_buffers[cons];
- struct sk_buff *skb = rp->skb;
- dma_addr_t map = rp->mapping;
- struct rx_header *rh;
- u16 len;
-
- dma_sync_single_for_cpu(bp->sdev->dma_dev, map,
- RX_PKT_BUF_SZ,
- DMA_FROM_DEVICE);
- rh = (struct rx_header *) skb->data;
- len = le16_to_cpu(rh->len);
- if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
- (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
- drop_it:
- b44_recycle_rx(bp, cons, bp->rx_prod);
- drop_it_no_recycle:
- bp->dev->stats.rx_dropped++;
- goto next_pkt;
- }
-
- if (len == 0) {
- int i = 0;
-
- do {
- udelay(2);
- barrier();
- len = le16_to_cpu(rh->len);
- } while (len == 0 && i++ < 5);
- if (len == 0)
- goto drop_it;
- }
-
- /* Omit CRC. */
- len -= 4;
-
- if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) {
- int skb_size;
- skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
- if (skb_size < 0)
- goto drop_it;
- dma_unmap_single(bp->sdev->dma_dev, map,
- skb_size, DMA_FROM_DEVICE);
- /* Leave out rx_header */
- skb_put(skb, len + RX_PKT_OFFSET);
- skb_pull(skb, RX_PKT_OFFSET);
- } else {
- struct sk_buff *copy_skb;
-
- b44_recycle_rx(bp, cons, bp->rx_prod);
- copy_skb = netdev_alloc_skb(bp->dev, len + 2);
- if (copy_skb == NULL)
- goto drop_it_no_recycle;
-
- skb_reserve(copy_skb, 2);
- skb_put(copy_skb, len);
- /* DMA sync done above, copy just the actual packet */
- skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
- copy_skb->data, len);
- skb = copy_skb;
- }
- skb_checksum_none_assert(skb);
- skb->protocol = eth_type_trans(skb, bp->dev);
- netif_receive_skb(skb);
- received++;
- budget--;
- next_pkt:
- bp->rx_prod = (bp->rx_prod + 1) &
- (B44_RX_RING_SIZE - 1);
- cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
- }
-
- bp->rx_cons = cons;
- bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
-
- return received;
-}
-
-static int b44_poll(struct napi_struct *napi, int budget)
-{
- struct b44 *bp = container_of(napi, struct b44, napi);
- int work_done;
- unsigned long flags;
-
- spin_lock_irqsave(&bp->lock, flags);
-
- if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
- /* spin_lock(&bp->tx_lock); */
- b44_tx(bp);
- /* spin_unlock(&bp->tx_lock); */
- }
- if (bp->istat & ISTAT_RFO) { /* fast recovery, in ~20msec */
- bp->istat &= ~ISTAT_RFO;
- b44_disable_ints(bp);
- ssb_device_enable(bp->sdev, 0); /* resets ISTAT_RFO */
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
- netif_wake_queue(bp->dev);
- }
-
- spin_unlock_irqrestore(&bp->lock, flags);
-
- work_done = 0;
- if (bp->istat & ISTAT_RX)
- work_done += b44_rx(bp, budget);
-
- if (bp->istat & ISTAT_ERRORS) {
- spin_lock_irqsave(&bp->lock, flags);
- b44_halt(bp);
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
- netif_wake_queue(bp->dev);
- spin_unlock_irqrestore(&bp->lock, flags);
- work_done = 0;
- }
-
- if (work_done < budget) {
- napi_complete(napi);
- b44_enable_ints(bp);
- }
-
- return work_done;
-}
-
-static irqreturn_t b44_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct b44 *bp = netdev_priv(dev);
- u32 istat, imask;
- int handled = 0;
-
- spin_lock(&bp->lock);
-
- istat = br32(bp, B44_ISTAT);
- imask = br32(bp, B44_IMASK);
-
- /* The interrupt mask register controls which interrupt bits
- * will actually raise an interrupt to the CPU when set by hw/firmware,
- * but doesn't mask off the bits.
- */
- istat &= imask;
- if (istat) {
- handled = 1;
-
- if (unlikely(!netif_running(dev))) {
- netdev_info(dev, "late interrupt\n");
- goto irq_ack;
- }
-
- if (napi_schedule_prep(&bp->napi)) {
- /* NOTE: These writes are posted by the readback of
- * the ISTAT register below.
- */
- bp->istat = istat;
- __b44_disable_ints(bp);
- __napi_schedule(&bp->napi);
- }
-
-irq_ack:
- bw32(bp, B44_ISTAT, istat);
- br32(bp, B44_ISTAT);
- }
- spin_unlock(&bp->lock);
- return IRQ_RETVAL(handled);
-}
-
-static void b44_tx_timeout(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
-
- netdev_err(dev, "transmit timed out, resetting\n");
-
- spin_lock_irq(&bp->lock);
-
- b44_halt(bp);
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET);
-
- spin_unlock_irq(&bp->lock);
-
- b44_enable_ints(bp);
-
- netif_wake_queue(dev);
-}
-
-static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
- int rc = NETDEV_TX_OK;
- dma_addr_t mapping;
- u32 len, entry, ctrl;
- unsigned long flags;
-
- len = skb->len;
- spin_lock_irqsave(&bp->lock, flags);
-
- /* This is a hard error, log it. */
- if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
- netif_stop_queue(dev);
- netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
- goto err_out;
- }
-
- mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE);
- if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
- struct sk_buff *bounce_skb;
-
- /* Chip can't handle DMA to/from >1GB, use bounce buffer */
- if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
- dma_unmap_single(bp->sdev->dma_dev, mapping, len,
- DMA_TO_DEVICE);
-
- bounce_skb = __netdev_alloc_skb(dev, len, GFP_ATOMIC | GFP_DMA);
- if (!bounce_skb)
- goto err_out;
-
- mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data,
- len, DMA_TO_DEVICE);
- if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
- if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
- dma_unmap_single(bp->sdev->dma_dev, mapping,
- len, DMA_TO_DEVICE);
- dev_kfree_skb_any(bounce_skb);
- goto err_out;
- }
-
- skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
- dev_kfree_skb_any(skb);
- skb = bounce_skb;
- }
-
- entry = bp->tx_prod;
- bp->tx_buffers[entry].skb = skb;
- bp->tx_buffers[entry].mapping = mapping;
-
- ctrl = (len & DESC_CTRL_LEN);
- ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
- if (entry == (B44_TX_RING_SIZE - 1))
- ctrl |= DESC_CTRL_EOT;
-
- bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
- bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
-
- if (bp->flags & B44_FLAG_TX_RING_HACK)
- b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
- entry * sizeof(bp->tx_ring[0]),
- DMA_TO_DEVICE);
-
- entry = NEXT_TX(entry);
-
- bp->tx_prod = entry;
-
- wmb();
-
- bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
- if (bp->flags & B44_FLAG_BUGGY_TXPTR)
- bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
- if (bp->flags & B44_FLAG_REORDER_BUG)
- br32(bp, B44_DMATX_PTR);
-
- if (TX_BUFFS_AVAIL(bp) < 1)
- netif_stop_queue(dev);
-
-out_unlock:
- spin_unlock_irqrestore(&bp->lock, flags);
-
- return rc;
-
-err_out:
- rc = NETDEV_TX_BUSY;
- goto out_unlock;
-}
-
-static int b44_change_mtu(struct net_device *dev, int new_mtu)
-{
- struct b44 *bp = netdev_priv(dev);
-
- if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
- return -EINVAL;
-
- if (!netif_running(dev)) {
- /* We'll just catch it later when the
- * device is up'd.
- */
- dev->mtu = new_mtu;
- return 0;
- }
-
- spin_lock_irq(&bp->lock);
- b44_halt(bp);
- dev->mtu = new_mtu;
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET);
- spin_unlock_irq(&bp->lock);
-
- b44_enable_ints(bp);
-
- return 0;
-}
-
-/* Free up pending packets in all rx/tx rings.
- *
- * The chip has been shut down and the driver detached from
- * the networking, so no interrupts or new tx packets will
- * end up in the driver. bp->lock is not held and we are not
- * in an interrupt context and thus may sleep.
- */
-static void b44_free_rings(struct b44 *bp)
-{
- struct ring_info *rp;
- int i;
-
- for (i = 0; i < B44_RX_RING_SIZE; i++) {
- rp = &bp->rx_buffers[i];
-
- if (rp->skb == NULL)
- continue;
- dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ,
- DMA_FROM_DEVICE);
- dev_kfree_skb_any(rp->skb);
- rp->skb = NULL;
- }
-
- /* XXX needs changes once NETIF_F_SG is set... */
- for (i = 0; i < B44_TX_RING_SIZE; i++) {
- rp = &bp->tx_buffers[i];
-
- if (rp->skb == NULL)
- continue;
- dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len,
- DMA_TO_DEVICE);
- dev_kfree_skb_any(rp->skb);
- rp->skb = NULL;
- }
-}
-
-/* Initialize tx/rx rings for packet processing.
- *
- * The chip has been shut down and the driver detached from
- * the networking, so no interrupts or new tx packets will
- * end up in the driver.
- */
-static void b44_init_rings(struct b44 *bp)
-{
- int i;
-
- b44_free_rings(bp);
-
- memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
- memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
-
- if (bp->flags & B44_FLAG_RX_RING_HACK)
- dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma,
- DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
-
- if (bp->flags & B44_FLAG_TX_RING_HACK)
- dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma,
- DMA_TABLE_BYTES, DMA_TO_DEVICE);
-
- for (i = 0; i < bp->rx_pending; i++) {
- if (b44_alloc_rx_skb(bp, -1, i) < 0)
- break;
- }
-}
-
-/*
- * Must not be invoked with interrupt sources disabled and
- * the hardware shutdown down.
- */
-static void b44_free_consistent(struct b44 *bp)
-{
- kfree(bp->rx_buffers);
- bp->rx_buffers = NULL;
- kfree(bp->tx_buffers);
- bp->tx_buffers = NULL;
- if (bp->rx_ring) {
- if (bp->flags & B44_FLAG_RX_RING_HACK) {
- dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma,
- DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
- kfree(bp->rx_ring);
- } else
- dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
- bp->rx_ring, bp->rx_ring_dma);
- bp->rx_ring = NULL;
- bp->flags &= ~B44_FLAG_RX_RING_HACK;
- }
- if (bp->tx_ring) {
- if (bp->flags & B44_FLAG_TX_RING_HACK) {
- dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma,
- DMA_TABLE_BYTES, DMA_TO_DEVICE);
- kfree(bp->tx_ring);
- } else
- dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
- bp->tx_ring, bp->tx_ring_dma);
- bp->tx_ring = NULL;
- bp->flags &= ~B44_FLAG_TX_RING_HACK;
- }
-}
-
-/*
- * Must not be invoked with interrupt sources disabled and
- * the hardware shutdown down. Can sleep.
- */
-static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp)
-{
- int size;
-
- size = B44_RX_RING_SIZE * sizeof(struct ring_info);
- bp->rx_buffers = kzalloc(size, gfp);
- if (!bp->rx_buffers)
- goto out_err;
-
- size = B44_TX_RING_SIZE * sizeof(struct ring_info);
- bp->tx_buffers = kzalloc(size, gfp);
- if (!bp->tx_buffers)
- goto out_err;
-
- size = DMA_TABLE_BYTES;
- bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
- &bp->rx_ring_dma, gfp);
- if (!bp->rx_ring) {
- /* Allocation may have failed due to pci_alloc_consistent
- insisting on use of GFP_DMA, which is more restrictive
- than necessary... */
- struct dma_desc *rx_ring;
- dma_addr_t rx_ring_dma;
-
- rx_ring = kzalloc(size, gfp);
- if (!rx_ring)
- goto out_err;
-
- rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring,
- DMA_TABLE_BYTES,
- DMA_BIDIRECTIONAL);
-
- if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) ||
- rx_ring_dma + size > DMA_BIT_MASK(30)) {
- kfree(rx_ring);
- goto out_err;
- }
-
- bp->rx_ring = rx_ring;
- bp->rx_ring_dma = rx_ring_dma;
- bp->flags |= B44_FLAG_RX_RING_HACK;
- }
-
- bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
- &bp->tx_ring_dma, gfp);
- if (!bp->tx_ring) {
- /* Allocation may have failed due to ssb_dma_alloc_consistent
- insisting on use of GFP_DMA, which is more restrictive
- than necessary... */
- struct dma_desc *tx_ring;
- dma_addr_t tx_ring_dma;
-
- tx_ring = kzalloc(size, gfp);
- if (!tx_ring)
- goto out_err;
-
- tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring,
- DMA_TABLE_BYTES,
- DMA_TO_DEVICE);
-
- if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) ||
- tx_ring_dma + size > DMA_BIT_MASK(30)) {
- kfree(tx_ring);
- goto out_err;
- }
-
- bp->tx_ring = tx_ring;
- bp->tx_ring_dma = tx_ring_dma;
- bp->flags |= B44_FLAG_TX_RING_HACK;
- }
-
- return 0;
-
-out_err:
- b44_free_consistent(bp);
- return -ENOMEM;
-}
-
-/* bp->lock is held. */
-static void b44_clear_stats(struct b44 *bp)
-{
- unsigned long reg;
-
- bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
- for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
- br32(bp, reg);
- for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
- br32(bp, reg);
-}
-
-/* bp->lock is held. */
-static void b44_chip_reset(struct b44 *bp, int reset_kind)
-{
- struct ssb_device *sdev = bp->sdev;
- bool was_enabled;
-
- was_enabled = ssb_device_is_enabled(bp->sdev);
-
- ssb_device_enable(bp->sdev, 0);
- ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
-
- if (was_enabled) {
- bw32(bp, B44_RCV_LAZY, 0);
- bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
- b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
- bw32(bp, B44_DMATX_CTRL, 0);
- bp->tx_prod = bp->tx_cons = 0;
- if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
- b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
- 100, 0);
- }
- bw32(bp, B44_DMARX_CTRL, 0);
- bp->rx_prod = bp->rx_cons = 0;
- }
-
- b44_clear_stats(bp);
-
- /*
- * Don't enable PHY if we are doing a partial reset
- * we are probably going to power down
- */
- if (reset_kind == B44_CHIP_RESET_PARTIAL)
- return;
-
- switch (sdev->bus->bustype) {
- case SSB_BUSTYPE_SSB:
- bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
- (DIV_ROUND_CLOSEST(ssb_clockspeed(sdev->bus),
- B44_MDC_RATIO)
- & MDIO_CTRL_MAXF_MASK)));
- break;
- case SSB_BUSTYPE_PCI:
- bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
- (0x0d & MDIO_CTRL_MAXF_MASK)));
- break;
- case SSB_BUSTYPE_PCMCIA:
- case SSB_BUSTYPE_SDIO:
- WARN_ON(1); /* A device with this bus does not exist. */
- break;
- }
-
- br32(bp, B44_MDIO_CTRL);
-
- if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
- bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
- br32(bp, B44_ENET_CTRL);
- bp->flags &= ~B44_FLAG_INTERNAL_PHY;
- } else {
- u32 val = br32(bp, B44_DEVCTRL);
-
- if (val & DEVCTRL_EPR) {
- bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
- br32(bp, B44_DEVCTRL);
- udelay(100);
- }
- bp->flags |= B44_FLAG_INTERNAL_PHY;
- }
-}
-
-/* bp->lock is held. */
-static void b44_halt(struct b44 *bp)
-{
- b44_disable_ints(bp);
- /* reset PHY */
- b44_phy_reset(bp);
- /* power down PHY */
- netdev_info(bp->dev, "powering down PHY\n");
- bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
- /* now reset the chip, but without enabling the MAC&PHY
- * part of it. This has to be done _after_ we shut down the PHY */
- b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
-}
-
-/* bp->lock is held. */
-static void __b44_set_mac_addr(struct b44 *bp)
-{
- bw32(bp, B44_CAM_CTRL, 0);
- if (!(bp->dev->flags & IFF_PROMISC)) {
- u32 val;
-
- __b44_cam_write(bp, bp->dev->dev_addr, 0);
- val = br32(bp, B44_CAM_CTRL);
- bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
- }
-}
-
-static int b44_set_mac_addr(struct net_device *dev, void *p)
-{
- struct b44 *bp = netdev_priv(dev);
- struct sockaddr *addr = p;
- u32 val;
-
- if (netif_running(dev))
- return -EBUSY;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EINVAL;
-
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
-
- spin_lock_irq(&bp->lock);
-
- val = br32(bp, B44_RXCONFIG);
- if (!(val & RXCONFIG_CAM_ABSENT))
- __b44_set_mac_addr(bp);
-
- spin_unlock_irq(&bp->lock);
-
- return 0;
-}
-
-/* Called at device open time to get the chip ready for
- * packet processing. Invoked with bp->lock held.
- */
-static void __b44_set_rx_mode(struct net_device *);
-static void b44_init_hw(struct b44 *bp, int reset_kind)
-{
- u32 val;
-
- b44_chip_reset(bp, B44_CHIP_RESET_FULL);
- if (reset_kind == B44_FULL_RESET) {
- b44_phy_reset(bp);
- b44_setup_phy(bp);
- }
-
- /* Enable CRC32, set proper LED modes and power on PHY */
- bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
- bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
-
- /* This sets the MAC address too. */
- __b44_set_rx_mode(bp->dev);
-
- /* MTU + eth header + possible VLAN tag + struct rx_header */
- bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
- bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
-
- bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
- if (reset_kind == B44_PARTIAL_RESET) {
- bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
- (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
- } else {
- bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
- bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
- bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
- (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
- bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
-
- bw32(bp, B44_DMARX_PTR, bp->rx_pending);
- bp->rx_prod = bp->rx_pending;
-
- bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
- }
-
- val = br32(bp, B44_ENET_CTRL);
- bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
-}
-
-static int b44_open(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
- int err;
-
- err = b44_alloc_consistent(bp, GFP_KERNEL);
- if (err)
- goto out;
-
- napi_enable(&bp->napi);
-
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET);
-
- b44_check_phy(bp);
-
- err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
- if (unlikely(err < 0)) {
- napi_disable(&bp->napi);
- b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
- b44_free_rings(bp);
- b44_free_consistent(bp);
- goto out;
- }
-
- init_timer(&bp->timer);
- bp->timer.expires = jiffies + HZ;
- bp->timer.data = (unsigned long) bp;
- bp->timer.function = b44_timer;
- add_timer(&bp->timer);
-
- b44_enable_ints(bp);
- netif_start_queue(dev);
-out:
- return err;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling receive - used by netconsole and other diagnostic tools
- * to allow network i/o with interrupts disabled.
- */
-static void b44_poll_controller(struct net_device *dev)
-{
- disable_irq(dev->irq);
- b44_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
-{
- u32 i;
- u32 *pattern = (u32 *) pp;
-
- for (i = 0; i < bytes; i += sizeof(u32)) {
- bw32(bp, B44_FILT_ADDR, table_offset + i);
- bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
- }
-}
-
-static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
-{
- int magicsync = 6;
- int k, j, len = offset;
- int ethaddr_bytes = ETH_ALEN;
-
- memset(ppattern + offset, 0xff, magicsync);
- for (j = 0; j < magicsync; j++)
- set_bit(len++, (unsigned long *) pmask);
-
- for (j = 0; j < B44_MAX_PATTERNS; j++) {
- if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
- ethaddr_bytes = ETH_ALEN;
- else
- ethaddr_bytes = B44_PATTERN_SIZE - len;
- if (ethaddr_bytes <=0)
- break;
- for (k = 0; k< ethaddr_bytes; k++) {
- ppattern[offset + magicsync +
- (j * ETH_ALEN) + k] = macaddr[k];
- set_bit(len++, (unsigned long *) pmask);
- }
- }
- return len - 1;
-}
-
-/* Setup magic packet patterns in the b44 WOL
- * pattern matching filter.
- */
-static void b44_setup_pseudo_magicp(struct b44 *bp)
-{
-
- u32 val;
- int plen0, plen1, plen2;
- u8 *pwol_pattern;
- u8 pwol_mask[B44_PMASK_SIZE];
-
- pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
- if (!pwol_pattern) {
- pr_err("Memory not available for WOL\n");
- return;
- }
-
- /* Ipv4 magic packet pattern - pattern 0.*/
- memset(pwol_mask, 0, B44_PMASK_SIZE);
- plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
- B44_ETHIPV4UDP_HLEN);
-
- bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
- bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
-
- /* Raw ethernet II magic packet pattern - pattern 1 */
- memset(pwol_pattern, 0, B44_PATTERN_SIZE);
- memset(pwol_mask, 0, B44_PMASK_SIZE);
- plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
- ETH_HLEN);
-
- bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
- B44_PATTERN_BASE + B44_PATTERN_SIZE);
- bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
- B44_PMASK_BASE + B44_PMASK_SIZE);
-
- /* Ipv6 magic packet pattern - pattern 2 */
- memset(pwol_pattern, 0, B44_PATTERN_SIZE);
- memset(pwol_mask, 0, B44_PMASK_SIZE);
- plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
- B44_ETHIPV6UDP_HLEN);
-
- bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
- B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
- bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
- B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
-
- kfree(pwol_pattern);
-
- /* set these pattern's lengths: one less than each real length */
- val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
- bw32(bp, B44_WKUP_LEN, val);
-
- /* enable wakeup pattern matching */
- val = br32(bp, B44_DEVCTRL);
- bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
-
-}
-
-#ifdef CONFIG_B44_PCI
-static void b44_setup_wol_pci(struct b44 *bp)
-{
- u16 val;
-
- if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
- bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
- pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
- pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
- }
-}
-#else
-static inline void b44_setup_wol_pci(struct b44 *bp) { }
-#endif /* CONFIG_B44_PCI */
-
-static void b44_setup_wol(struct b44 *bp)
-{
- u32 val;
-
- bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
-
- if (bp->flags & B44_FLAG_B0_ANDLATER) {
-
- bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
-
- val = bp->dev->dev_addr[2] << 24 |
- bp->dev->dev_addr[3] << 16 |
- bp->dev->dev_addr[4] << 8 |
- bp->dev->dev_addr[5];
- bw32(bp, B44_ADDR_LO, val);
-
- val = bp->dev->dev_addr[0] << 8 |
- bp->dev->dev_addr[1];
- bw32(bp, B44_ADDR_HI, val);
-
- val = br32(bp, B44_DEVCTRL);
- bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
-
- } else {
- b44_setup_pseudo_magicp(bp);
- }
- b44_setup_wol_pci(bp);
-}
-
-static int b44_close(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
-
- netif_stop_queue(dev);
-
- napi_disable(&bp->napi);
-
- del_timer_sync(&bp->timer);
-
- spin_lock_irq(&bp->lock);
-
- b44_halt(bp);
- b44_free_rings(bp);
- netif_carrier_off(dev);
-
- spin_unlock_irq(&bp->lock);
-
- free_irq(dev->irq, dev);
-
- if (bp->flags & B44_FLAG_WOL_ENABLE) {
- b44_init_hw(bp, B44_PARTIAL_RESET);
- b44_setup_wol(bp);
- }
-
- b44_free_consistent(bp);
-
- return 0;
-}
-
-static struct net_device_stats *b44_get_stats(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
- struct net_device_stats *nstat = &dev->stats;
- struct b44_hw_stats *hwstat = &bp->hw_stats;
-
- /* Convert HW stats into netdevice stats. */
- nstat->rx_packets = hwstat->rx_pkts;
- nstat->tx_packets = hwstat->tx_pkts;
- nstat->rx_bytes = hwstat->rx_octets;
- nstat->tx_bytes = hwstat->tx_octets;
- nstat->tx_errors = (hwstat->tx_jabber_pkts +
- hwstat->tx_oversize_pkts +
- hwstat->tx_underruns +
- hwstat->tx_excessive_cols +
- hwstat->tx_late_cols);
- nstat->multicast = hwstat->tx_multicast_pkts;
- nstat->collisions = hwstat->tx_total_cols;
-
- nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
- hwstat->rx_undersize);
- nstat->rx_over_errors = hwstat->rx_missed_pkts;
- nstat->rx_frame_errors = hwstat->rx_align_errs;
- nstat->rx_crc_errors = hwstat->rx_crc_errs;
- nstat->rx_errors = (hwstat->rx_jabber_pkts +
- hwstat->rx_oversize_pkts +
- hwstat->rx_missed_pkts +
- hwstat->rx_crc_align_errs +
- hwstat->rx_undersize +
- hwstat->rx_crc_errs +
- hwstat->rx_align_errs +
- hwstat->rx_symbol_errs);
-
- nstat->tx_aborted_errors = hwstat->tx_underruns;
-#if 0
- /* Carrier lost counter seems to be broken for some devices */
- nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
-#endif
-
- return nstat;
-}
-
-static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
-{
- struct netdev_hw_addr *ha;
- int i, num_ents;
-
- num_ents = min_t(int, netdev_mc_count(dev), B44_MCAST_TABLE_SIZE);
- i = 0;
- netdev_for_each_mc_addr(ha, dev) {
- if (i == num_ents)
- break;
- __b44_cam_write(bp, ha->addr, i++ + 1);
- }
- return i+1;
-}
-
-static void __b44_set_rx_mode(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
- u32 val;
-
- val = br32(bp, B44_RXCONFIG);
- val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
- if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
- val |= RXCONFIG_PROMISC;
- bw32(bp, B44_RXCONFIG, val);
- } else {
- unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
- int i = 1;
-
- __b44_set_mac_addr(bp);
-
- if ((dev->flags & IFF_ALLMULTI) ||
- (netdev_mc_count(dev) > B44_MCAST_TABLE_SIZE))
- val |= RXCONFIG_ALLMULTI;
- else
- i = __b44_load_mcast(bp, dev);
-
- for (; i < 64; i++)
- __b44_cam_write(bp, zero, i);
-
- bw32(bp, B44_RXCONFIG, val);
- val = br32(bp, B44_CAM_CTRL);
- bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
- }
-}
-
-static void b44_set_rx_mode(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
-
- spin_lock_irq(&bp->lock);
- __b44_set_rx_mode(dev);
- spin_unlock_irq(&bp->lock);
-}
-
-static u32 b44_get_msglevel(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
- return bp->msg_enable;
-}
-
-static void b44_set_msglevel(struct net_device *dev, u32 value)
-{
- struct b44 *bp = netdev_priv(dev);
- bp->msg_enable = value;
-}
-
-static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
-{
- struct b44 *bp = netdev_priv(dev);
- struct ssb_bus *bus = bp->sdev->bus;
-
- strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
- strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
- switch (bus->bustype) {
- case SSB_BUSTYPE_PCI:
- strlcpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
- break;
- case SSB_BUSTYPE_SSB:
- strlcpy(info->bus_info, "SSB", sizeof(info->bus_info));
- break;
- case SSB_BUSTYPE_PCMCIA:
- case SSB_BUSTYPE_SDIO:
- WARN_ON(1); /* A device with this bus does not exist. */
- break;
- }
-}
-
-static int b44_nway_reset(struct net_device *dev)
-{
- struct b44 *bp = netdev_priv(dev);
- u32 bmcr;
- int r;
-
- spin_lock_irq(&bp->lock);
- b44_readphy(bp, MII_BMCR, &bmcr);
- b44_readphy(bp, MII_BMCR, &bmcr);
- r = -EINVAL;
- if (bmcr & BMCR_ANENABLE) {
- b44_writephy(bp, MII_BMCR,
- bmcr | BMCR_ANRESTART);
- r = 0;
- }
- spin_unlock_irq(&bp->lock);
-
- return r;
-}
-
-static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct b44 *bp = netdev_priv(dev);
-
- cmd->supported = (SUPPORTED_Autoneg);
- cmd->supported |= (SUPPORTED_100baseT_Half |
- SUPPORTED_100baseT_Full |
- SUPPORTED_10baseT_Half |
- SUPPORTED_10baseT_Full |
- SUPPORTED_MII);
-
- cmd->advertising = 0;
- if (bp->flags & B44_FLAG_ADV_10HALF)
- cmd->advertising |= ADVERTISED_10baseT_Half;
- if (bp->flags & B44_FLAG_ADV_10FULL)
- cmd->advertising |= ADVERTISED_10baseT_Full;
- if (bp->flags & B44_FLAG_ADV_100HALF)
- cmd->advertising |= ADVERTISED_100baseT_Half;
- if (bp->flags & B44_FLAG_ADV_100FULL)
- cmd->advertising |= ADVERTISED_100baseT_Full;
- cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
- ethtool_cmd_speed_set(cmd, ((bp->flags & B44_FLAG_100_BASE_T) ?
- SPEED_100 : SPEED_10));
- cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
- DUPLEX_FULL : DUPLEX_HALF;
- cmd->port = 0;
- cmd->phy_address = bp->phy_addr;
- cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ?
- XCVR_INTERNAL : XCVR_EXTERNAL;
- cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
- AUTONEG_DISABLE : AUTONEG_ENABLE;
- if (cmd->autoneg == AUTONEG_ENABLE)
- cmd->advertising |= ADVERTISED_Autoneg;
- if (!netif_running(dev)){
- ethtool_cmd_speed_set(cmd, 0);
- cmd->duplex = 0xff;
- }
- cmd->maxtxpkt = 0;
- cmd->maxrxpkt = 0;
- return 0;
-}
-
-static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct b44 *bp = netdev_priv(dev);
- u32 speed = ethtool_cmd_speed(cmd);
-
- /* We do not support gigabit. */
- if (cmd->autoneg == AUTONEG_ENABLE) {
- if (cmd->advertising &
- (ADVERTISED_1000baseT_Half |
- ADVERTISED_1000baseT_Full))
- return -EINVAL;
- } else if ((speed != SPEED_100 &&
- speed != SPEED_10) ||
- (cmd->duplex != DUPLEX_HALF &&
- cmd->duplex != DUPLEX_FULL)) {
- return -EINVAL;
- }
-
- spin_lock_irq(&bp->lock);
-
- if (cmd->autoneg == AUTONEG_ENABLE) {
- bp->flags &= ~(B44_FLAG_FORCE_LINK |
- B44_FLAG_100_BASE_T |
- B44_FLAG_FULL_DUPLEX |
- B44_FLAG_ADV_10HALF |
- B44_FLAG_ADV_10FULL |
- B44_FLAG_ADV_100HALF |
- B44_FLAG_ADV_100FULL);
- if (cmd->advertising == 0) {
- bp->flags |= (B44_FLAG_ADV_10HALF |
- B44_FLAG_ADV_10FULL |
- B44_FLAG_ADV_100HALF |
- B44_FLAG_ADV_100FULL);
- } else {
- if (cmd->advertising & ADVERTISED_10baseT_Half)
- bp->flags |= B44_FLAG_ADV_10HALF;
- if (cmd->advertising & ADVERTISED_10baseT_Full)
- bp->flags |= B44_FLAG_ADV_10FULL;
- if (cmd->advertising & ADVERTISED_100baseT_Half)
- bp->flags |= B44_FLAG_ADV_100HALF;
- if (cmd->advertising & ADVERTISED_100baseT_Full)
- bp->flags |= B44_FLAG_ADV_100FULL;
- }
- } else {
- bp->flags |= B44_FLAG_FORCE_LINK;
- bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
- if (speed == SPEED_100)
- bp->flags |= B44_FLAG_100_BASE_T;
- if (cmd->duplex == DUPLEX_FULL)
- bp->flags |= B44_FLAG_FULL_DUPLEX;
- }
-
- if (netif_running(dev))
- b44_setup_phy(bp);
-
- spin_unlock_irq(&bp->lock);
-
- return 0;
-}
-
-static void b44_get_ringparam(struct net_device *dev,
- struct ethtool_ringparam *ering)
-{
- struct b44 *bp = netdev_priv(dev);
-
- ering->rx_max_pending = B44_RX_RING_SIZE - 1;
- ering->rx_pending = bp->rx_pending;
-
- /* XXX ethtool lacks a tx_max_pending, oops... */
-}
-
-static int b44_set_ringparam(struct net_device *dev,
- struct ethtool_ringparam *ering)
-{
- struct b44 *bp = netdev_priv(dev);
-
- if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
- (ering->rx_mini_pending != 0) ||
- (ering->rx_jumbo_pending != 0) ||
- (ering->tx_pending > B44_TX_RING_SIZE - 1))
- return -EINVAL;
-
- spin_lock_irq(&bp->lock);
-
- bp->rx_pending = ering->rx_pending;
- bp->tx_pending = ering->tx_pending;
-
- b44_halt(bp);
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET);
- netif_wake_queue(bp->dev);
- spin_unlock_irq(&bp->lock);
-
- b44_enable_ints(bp);
-
- return 0;
-}
-
-static void b44_get_pauseparam(struct net_device *dev,
- struct ethtool_pauseparam *epause)
-{
- struct b44 *bp = netdev_priv(dev);
-
- epause->autoneg =
- (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
- epause->rx_pause =
- (bp->flags & B44_FLAG_RX_PAUSE) != 0;
- epause->tx_pause =
- (bp->flags & B44_FLAG_TX_PAUSE) != 0;
-}
-
-static int b44_set_pauseparam(struct net_device *dev,
- struct ethtool_pauseparam *epause)
-{
- struct b44 *bp = netdev_priv(dev);
-
- spin_lock_irq(&bp->lock);
- if (epause->autoneg)
- bp->flags |= B44_FLAG_PAUSE_AUTO;
- else
- bp->flags &= ~B44_FLAG_PAUSE_AUTO;
- if (epause->rx_pause)
- bp->flags |= B44_FLAG_RX_PAUSE;
- else
- bp->flags &= ~B44_FLAG_RX_PAUSE;
- if (epause->tx_pause)
- bp->flags |= B44_FLAG_TX_PAUSE;
- else
- bp->flags &= ~B44_FLAG_TX_PAUSE;
- if (bp->flags & B44_FLAG_PAUSE_AUTO) {
- b44_halt(bp);
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET);
- } else {
- __b44_set_flow_ctrl(bp, bp->flags);
- }
- spin_unlock_irq(&bp->lock);
-
- b44_enable_ints(bp);
-
- return 0;
-}
-
-static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
-{
- switch(stringset) {
- case ETH_SS_STATS:
- memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
- break;
- }
-}
-
-static int b44_get_sset_count(struct net_device *dev, int sset)
-{
- switch (sset) {
- case ETH_SS_STATS:
- return ARRAY_SIZE(b44_gstrings);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static void b44_get_ethtool_stats(struct net_device *dev,
- struct ethtool_stats *stats, u64 *data)
-{
- struct b44 *bp = netdev_priv(dev);
- u32 *val = &bp->hw_stats.tx_good_octets;
- u32 i;
-
- spin_lock_irq(&bp->lock);
-
- b44_stats_update(bp);
-
- for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
- *data++ = *val++;
-
- spin_unlock_irq(&bp->lock);
-}
-
-static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
-{
- struct b44 *bp = netdev_priv(dev);
-
- wol->supported = WAKE_MAGIC;
- if (bp->flags & B44_FLAG_WOL_ENABLE)
- wol->wolopts = WAKE_MAGIC;
- else
- wol->wolopts = 0;
- memset(&wol->sopass, 0, sizeof(wol->sopass));
-}
-
-static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
-{
- struct b44 *bp = netdev_priv(dev);
-
- spin_lock_irq(&bp->lock);
- if (wol->wolopts & WAKE_MAGIC)
- bp->flags |= B44_FLAG_WOL_ENABLE;
- else
- bp->flags &= ~B44_FLAG_WOL_ENABLE;
- spin_unlock_irq(&bp->lock);
-
- return 0;
-}
-
-static const struct ethtool_ops b44_ethtool_ops = {
- .get_drvinfo = b44_get_drvinfo,
- .get_settings = b44_get_settings,
- .set_settings = b44_set_settings,
- .nway_reset = b44_nway_reset,
- .get_link = ethtool_op_get_link,
- .get_wol = b44_get_wol,
- .set_wol = b44_set_wol,
- .get_ringparam = b44_get_ringparam,
- .set_ringparam = b44_set_ringparam,
- .get_pauseparam = b44_get_pauseparam,
- .set_pauseparam = b44_set_pauseparam,
- .get_msglevel = b44_get_msglevel,
- .set_msglevel = b44_set_msglevel,
- .get_strings = b44_get_strings,
- .get_sset_count = b44_get_sset_count,
- .get_ethtool_stats = b44_get_ethtool_stats,
-};
-
-static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
- struct mii_ioctl_data *data = if_mii(ifr);
- struct b44 *bp = netdev_priv(dev);
- int err = -EINVAL;
-
- if (!netif_running(dev))
- goto out;
-
- spin_lock_irq(&bp->lock);
- err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL);
- spin_unlock_irq(&bp->lock);
-out:
- return err;
-}
-
-static int __devinit b44_get_invariants(struct b44 *bp)
-{
- struct ssb_device *sdev = bp->sdev;
- int err = 0;
- u8 *addr;
-
- bp->dma_offset = ssb_dma_translation(sdev);
-
- if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
- instance > 1) {
- addr = sdev->bus->sprom.et1mac;
- bp->phy_addr = sdev->bus->sprom.et1phyaddr;
- } else {
- addr = sdev->bus->sprom.et0mac;
- bp->phy_addr = sdev->bus->sprom.et0phyaddr;
- }
- /* Some ROMs have buggy PHY addresses with the high
- * bits set (sign extension?). Truncate them to a
- * valid PHY address. */
- bp->phy_addr &= 0x1F;
-
- memcpy(bp->dev->dev_addr, addr, 6);
-
- if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
- pr_err("Invalid MAC address found in EEPROM\n");
- return -EINVAL;
- }
-
- memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len);
-
- bp->imask = IMASK_DEF;
-
- /* XXX - really required?
- bp->flags |= B44_FLAG_BUGGY_TXPTR;
- */
-
- if (bp->sdev->id.revision >= 7)
- bp->flags |= B44_FLAG_B0_ANDLATER;
-
- return err;
-}
-
-static const struct net_device_ops b44_netdev_ops = {
- .ndo_open = b44_open,
- .ndo_stop = b44_close,
- .ndo_start_xmit = b44_start_xmit,
- .ndo_get_stats = b44_get_stats,
- .ndo_set_multicast_list = b44_set_rx_mode,
- .ndo_set_mac_address = b44_set_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_do_ioctl = b44_ioctl,
- .ndo_tx_timeout = b44_tx_timeout,
- .ndo_change_mtu = b44_change_mtu,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = b44_poll_controller,
-#endif
-};
-
-static int __devinit b44_init_one(struct ssb_device *sdev,
- const struct ssb_device_id *ent)
-{
- struct net_device *dev;
- struct b44 *bp;
- int err;
-
- instance++;
-
- pr_info_once("%s version %s\n", DRV_DESCRIPTION, DRV_MODULE_VERSION);
-
- dev = alloc_etherdev(sizeof(*bp));
- if (!dev) {
- dev_err(sdev->dev, "Etherdev alloc failed, aborting\n");
- err = -ENOMEM;
- goto out;
- }
-
- SET_NETDEV_DEV(dev, sdev->dev);
-
- /* No interesting netdevice features in this card... */
- dev->features |= 0;
-
- bp = netdev_priv(dev);
- bp->sdev = sdev;
- bp->dev = dev;
- bp->force_copybreak = 0;
-
- bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
-
- spin_lock_init(&bp->lock);
-
- bp->rx_pending = B44_DEF_RX_RING_PENDING;
- bp->tx_pending = B44_DEF_TX_RING_PENDING;
-
- dev->netdev_ops = &b44_netdev_ops;
- netif_napi_add(dev, &bp->napi, b44_poll, 64);
- dev->watchdog_timeo = B44_TX_TIMEOUT;
- dev->irq = sdev->irq;
- SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
-
- err = ssb_bus_powerup(sdev->bus, 0);
- if (err) {
- dev_err(sdev->dev,
- "Failed to powerup the bus\n");
- goto err_out_free_dev;
- }
-
- if (dma_set_mask(sdev->dma_dev, DMA_BIT_MASK(30)) ||
- dma_set_coherent_mask(sdev->dma_dev, DMA_BIT_MASK(30))) {
- dev_err(sdev->dev,
- "Required 30BIT DMA mask unsupported by the system\n");
- goto err_out_powerdown;
- }
-
- err = b44_get_invariants(bp);
- if (err) {
- dev_err(sdev->dev,
- "Problem fetching invariants of chip, aborting\n");
- goto err_out_powerdown;
- }
-
- bp->mii_if.dev = dev;
- bp->mii_if.mdio_read = b44_mii_read;
- bp->mii_if.mdio_write = b44_mii_write;
- bp->mii_if.phy_id = bp->phy_addr;
- bp->mii_if.phy_id_mask = 0x1f;
- bp->mii_if.reg_num_mask = 0x1f;
-
- /* By default, advertise all speed/duplex settings. */
- bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
- B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
-
- /* By default, auto-negotiate PAUSE. */
- bp->flags |= B44_FLAG_PAUSE_AUTO;
-
- err = register_netdev(dev);
- if (err) {
- dev_err(sdev->dev, "Cannot register net device, aborting\n");
- goto err_out_powerdown;
- }
-
- netif_carrier_off(dev);
-
- ssb_set_drvdata(sdev, dev);
-
- /* Chip reset provides power to the b44 MAC & PCI cores, which
- * is necessary for MAC register access.
- */
- b44_chip_reset(bp, B44_CHIP_RESET_FULL);
-
- /* do a phy reset to test if there is an active phy */
- if (b44_phy_reset(bp) < 0)
- bp->phy_addr = B44_PHY_ADDR_NO_PHY;
-
- netdev_info(dev, "%s %pM\n", DRV_DESCRIPTION, dev->dev_addr);
-
- return 0;
-
-err_out_powerdown:
- ssb_bus_may_powerdown(sdev->bus);
-
-err_out_free_dev:
- free_netdev(dev);
-
-out:
- return err;
-}
-
-static void __devexit b44_remove_one(struct ssb_device *sdev)
-{
- struct net_device *dev = ssb_get_drvdata(sdev);
-
- unregister_netdev(dev);
- ssb_device_disable(sdev, 0);
- ssb_bus_may_powerdown(sdev->bus);
- free_netdev(dev);
- ssb_pcihost_set_power_state(sdev, PCI_D3hot);
- ssb_set_drvdata(sdev, NULL);
-}
-
-static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
-{
- struct net_device *dev = ssb_get_drvdata(sdev);
- struct b44 *bp = netdev_priv(dev);
-
- if (!netif_running(dev))
- return 0;
-
- del_timer_sync(&bp->timer);
-
- spin_lock_irq(&bp->lock);
-
- b44_halt(bp);
- netif_carrier_off(bp->dev);
- netif_device_detach(bp->dev);
- b44_free_rings(bp);
-
- spin_unlock_irq(&bp->lock);
-
- free_irq(dev->irq, dev);
- if (bp->flags & B44_FLAG_WOL_ENABLE) {
- b44_init_hw(bp, B44_PARTIAL_RESET);
- b44_setup_wol(bp);
- }
-
- ssb_pcihost_set_power_state(sdev, PCI_D3hot);
- return 0;
-}
-
-static int b44_resume(struct ssb_device *sdev)
-{
- struct net_device *dev = ssb_get_drvdata(sdev);
- struct b44 *bp = netdev_priv(dev);
- int rc = 0;
-
- rc = ssb_bus_powerup(sdev->bus, 0);
- if (rc) {
- dev_err(sdev->dev,
- "Failed to powerup the bus\n");
- return rc;
- }
-
- if (!netif_running(dev))
- return 0;
-
- spin_lock_irq(&bp->lock);
- b44_init_rings(bp);
- b44_init_hw(bp, B44_FULL_RESET);
- spin_unlock_irq(&bp->lock);
-
- /*
- * As a shared interrupt, the handler can be called immediately. To be
- * able to check the interrupt status the hardware must already be
- * powered back on (b44_init_hw).
- */
- rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
- if (rc) {
- netdev_err(dev, "request_irq failed\n");
- spin_lock_irq(&bp->lock);
- b44_halt(bp);
- b44_free_rings(bp);
- spin_unlock_irq(&bp->lock);
- return rc;
- }
-
- netif_device_attach(bp->dev);
-
- b44_enable_ints(bp);
- netif_wake_queue(dev);
-
- mod_timer(&bp->timer, jiffies + 1);
-
- return 0;
-}
-
-static struct ssb_driver b44_ssb_driver = {
- .name = DRV_MODULE_NAME,
- .id_table = b44_ssb_tbl,
- .probe = b44_init_one,
- .remove = __devexit_p(b44_remove_one),
- .suspend = b44_suspend,
- .resume = b44_resume,
-};
-
-static inline int __init b44_pci_init(void)
-{
- int err = 0;
-#ifdef CONFIG_B44_PCI
- err = ssb_pcihost_register(&b44_pci_driver);
-#endif
- return err;
-}
-
-static inline void __exit b44_pci_exit(void)
-{
-#ifdef CONFIG_B44_PCI
- ssb_pcihost_unregister(&b44_pci_driver);
-#endif
-}
-
-static int __init b44_init(void)
-{
- unsigned int dma_desc_align_size = dma_get_cache_alignment();
- int err;
-
- /* Setup paramaters for syncing RX/TX DMA descriptors */
- dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
-
- err = b44_pci_init();
- if (err)
- return err;
- err = ssb_driver_register(&b44_ssb_driver);
- if (err)
- b44_pci_exit();
- return err;
-}
-
-static void __exit b44_cleanup(void)
-{
- ssb_driver_unregister(&b44_ssb_driver);
- b44_pci_exit();
-}
-
-module_init(b44_init);
-module_exit(b44_cleanup);
-
git.openpandora.org / pandora-kernel.git / blobdiff