diff options
Diffstat (limited to 'drivers/net/b44.c')
| -rw-r--r-- | drivers/net/b44.c | 2374 |
1 files changed, 0 insertions, 2374 deletions
diff --git a/drivers/net/b44.c b/drivers/net/b44.c deleted file mode 100644 index 41ea84e3f69..00000000000 --- a/drivers/net/b44.c +++ /dev/null @@ -1,2374 +0,0 @@ -/* 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); - |