| /* 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 <mb@bu3sch.de> |
| * |
| * Distribute under GPL. |
| */ |
| |
| #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/dma-mapping.h> |
| #include <linux/ssb/ssb.h> |
| |
| #include <asm/uaccess.h> |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| |
| |
| #include "b44.h" |
| |
| #define DRV_MODULE_NAME "b44" |
| #define PFX DRV_MODULE_NAME ": " |
| #define DRV_MODULE_VERSION "2.0" |
| |
| #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 30 |
| #define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET + 64) |
| |
| /* 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 |
| |
| static char version[] __devinitdata = |
| DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION "\n"; |
| |
| MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller"); |
| MODULE_DESCRIPTION("Broadcom 44xx/47xx 10/100 PCI ethernet driver"); |
| 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 const struct pci_device_id 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_align_mask; |
| 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) |
| { |
| ssb_dma_sync_single_range_for_device(sdev, dma_base, |
| offset & dma_desc_align_mask, |
| 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) |
| { |
| ssb_dma_sync_single_range_for_cpu(sdev, dma_base, |
| offset & dma_desc_align_mask, |
| 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) { |
| printk(KERN_ERR PFX "%s: BUG! Timeout waiting for bit %08x of register " |
| "%lx to %s.\n", |
| bp->dev->name, |
| 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) { |
| printk(KERN_ERR PFX "%s: PHY Reset would not complete.\n", |
| bp->dev->name); |
| err = -ENODEV; |
| } |
| } |
| |
| return 0; |
| } |
| |
| 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 SSB_DRIVER_MIPS |
| extern char *nvram_get(char *name); |
| static void b44_wap54g10_workaround(struct b44 *bp) |
| { |
| const char *str; |
| 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" |
| */ |
| str = nvram_get("boardnum"); |
| if (!str) |
| return; |
| if (simple_strtoul(str, 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: |
| printk(KERN_WARNING PFX "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)) { |
| printk(KERN_INFO PFX "%s: Link is down.\n", bp->dev->name); |
| } else { |
| printk(KERN_INFO PFX "%s: Link is up at %d Mbps, %s duplex.\n", |
| bp->dev->name, |
| (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10, |
| (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half"); |
| |
| printk(KERN_INFO PFX "%s: Flow control is %s for TX and " |
| "%s for RX.\n", |
| bp->dev->name, |
| (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) |
| printk(KERN_WARNING PFX "%s: Remote fault detected in PHY\n", |
| bp->dev->name); |
| if (bmsr & BMSR_JCD) |
| printk(KERN_WARNING PFX "%s: Jabber detected in PHY\n", |
| bp->dev->name); |
| } |
| } |
| |
| 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); |
| |
| ssb_dma_unmap_single(bp->sdev, |
| rp->mapping, |
| skb->len, |
| DMA_TO_DEVICE); |
| rp->skb = NULL; |
| dev_kfree_skb_irq(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 = ssb_dma_map_single(bp->sdev, 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 (ssb_dma_mapping_error(bp->sdev, mapping) || |
| mapping + RX_PKT_BUF_SZ > DMA_30BIT_MASK) { |
| /* Sigh... */ |
| if (!ssb_dma_mapping_error(bp->sdev, mapping)) |
| ssb_dma_unmap_single(bp->sdev, 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 = ssb_dma_map_single(bp->sdev, skb->data, |
| RX_PKT_BUF_SZ, |
| DMA_FROM_DEVICE); |
| if (ssb_dma_mapping_error(bp->sdev, mapping) || |
| mapping + RX_PKT_BUF_SZ > DMA_30BIT_MASK) { |
| if (!ssb_dma_mapping_error(bp->sdev, mapping)) |
| ssb_dma_unmap_single(bp->sdev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE); |
| dev_kfree_skb_any(skb); |
| return -ENOMEM; |
| } |
| } |
| |
| rh = (struct rx_header *) skb->data; |
| skb_reserve(skb, RX_PKT_OFFSET); |
| |
| 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 - RX_PKT_OFFSET)); |
| 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 + RX_PKT_OFFSET + 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); |
| |
| ssb_dma_sync_single_for_device(bp->sdev, le32_to_cpu(src_desc->addr), |
| 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; |
| |
| ssb_dma_sync_single_for_cpu(bp->sdev, 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->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 (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; |
| ssb_dma_unmap_single(bp->sdev, 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 = dev_alloc_skb(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->ip_summed = CHECKSUM_NONE; |
| skb->protocol = eth_type_trans(skb, bp->dev); |
| netif_receive_skb(skb); |
| bp->dev->last_rx = jiffies; |
| 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); |
| struct net_device *netdev = bp->dev; |
| int work_done; |
| |
| spin_lock_irq(&bp->lock); |
| |
| if (bp->istat & (ISTAT_TX | ISTAT_TO)) { |
| /* spin_lock(&bp->tx_lock); */ |
| b44_tx(bp); |
| /* spin_unlock(&bp->tx_lock); */ |
| } |
| spin_unlock_irq(&bp->lock); |
| |
| work_done = 0; |
| if (bp->istat & ISTAT_RX) |
| work_done += b44_rx(bp, budget); |
| |
| if (bp->istat & ISTAT_ERRORS) { |
| unsigned long flags; |
| |
| 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) { |
| netif_rx_complete(netdev, 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))) { |
| printk(KERN_INFO "%s: late interrupt.\n", dev->name); |
| goto irq_ack; |
| } |
| |
| if (netif_rx_schedule_prep(dev, &bp->napi)) { |
| /* NOTE: These writes are posted by the readback of |
| * the ISTAT register below. |
| */ |
| bp->istat = istat; |
| __b44_disable_ints(bp); |
| __netif_rx_schedule(dev, &bp->napi); |
| } else { |
| printk(KERN_ERR PFX "%s: Error, poll already scheduled\n", |
| dev->name); |
| } |
| |
| 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); |
| |
| printk(KERN_ERR PFX "%s: transmit timed out, resetting\n", |
| dev->name); |
| |
| 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 int 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; |
| |
| len = skb->len; |
| spin_lock_irq(&bp->lock); |
| |
| /* This is a hard error, log it. */ |
| if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) { |
| netif_stop_queue(dev); |
| printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n", |
| dev->name); |
| goto err_out; |
| } |
| |
| mapping = ssb_dma_map_single(bp->sdev, skb->data, len, DMA_TO_DEVICE); |
| if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_30BIT_MASK) { |
| struct sk_buff *bounce_skb; |
| |
| /* Chip can't handle DMA to/from >1GB, use bounce buffer */ |
| if (!ssb_dma_mapping_error(bp->sdev, mapping)) |
| ssb_dma_unmap_single(bp->sdev, mapping, len, |
| DMA_TO_DEVICE); |
| |
| bounce_skb = __dev_alloc_skb(len, GFP_ATOMIC | GFP_DMA); |
| if (!bounce_skb) |
| goto err_out; |
| |
| mapping = ssb_dma_map_single(bp->sdev, bounce_skb->data, |
| len, DMA_TO_DEVICE); |
| if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_30BIT_MASK) { |
| if (!ssb_dma_mapping_error(bp->sdev, mapping)) |
| ssb_dma_unmap_single(bp->sdev, 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); |
| |
| dev->trans_start = jiffies; |
| |
| out_unlock: |
| spin_unlock_irq(&bp->lock); |
| |
| 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; |
| ssb_dma_unmap_single(bp->sdev, 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; |
| ssb_dma_unmap_single(bp->sdev, 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) |
| ssb_dma_sync_single_for_device(bp->sdev, bp->rx_ring_dma, |
| DMA_TABLE_BYTES, |
| DMA_BIDIRECTIONAL); |
| |
| if (bp->flags & B44_FLAG_TX_RING_HACK) |
| ssb_dma_sync_single_for_device(bp->sdev, 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) { |
| ssb_dma_unmap_single(bp->sdev, bp->rx_ring_dma, |
| DMA_TABLE_BYTES, |
| DMA_BIDIRECTIONAL); |
| kfree(bp->rx_ring); |
| } else |
| ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES, |
| bp->rx_ring, bp->rx_ring_dma, |
| GFP_KERNEL); |
| bp->rx_ring = NULL; |
| bp->flags &= ~B44_FLAG_RX_RING_HACK; |
| } |
| if (bp->tx_ring) { |
| if (bp->flags & B44_FLAG_TX_RING_HACK) { |
| ssb_dma_unmap_single(bp->sdev, bp->tx_ring_dma, |
| DMA_TABLE_BYTES, |
| DMA_TO_DEVICE); |
| kfree(bp->tx_ring); |
| } else |
| ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES, |
| bp->tx_ring, bp->tx_ring_dma, |
| GFP_KERNEL); |
| 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 = ssb_dma_alloc_consistent(bp->sdev, 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 = ssb_dma_map_single(bp->sdev, rx_ring, |
| DMA_TABLE_BYTES, |
| DMA_BIDIRECTIONAL); |
| |
| if (ssb_dma_mapping_error(bp->sdev, rx_ring_dma) || |
| rx_ring_dma + size > DMA_30BIT_MASK) { |
| 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 = ssb_dma_alloc_consistent(bp->sdev, 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 = ssb_dma_map_single(bp->sdev, tx_ring, |
| DMA_TABLE_BYTES, |
| DMA_TO_DEVICE); |
| |
| if (ssb_dma_mapping_error(bp->sdev, tx_ring_dma) || |
| tx_ring_dma + size > DMA_30BIT_MASK) { |
| 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; |
| |
| if (ssb_device_is_enabled(bp->sdev)) { |
| 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; |
| } else |
| ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev); |
| |
| ssb_device_enable(bp->sdev, 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 | |
| (((ssb_clockspeed(sdev->bus) + (B44_MDC_RATIO / 2)) / B44_MDC_RATIO) |
| & MDIO_CTRL_MAXF_MASK))); |
| break; |
| case SSB_BUSTYPE_PCI: |
| case SSB_BUSTYPE_PCMCIA: |
| bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE | |
| (0x0d & MDIO_CTRL_MAXF_MASK))); |
| 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 */ |
| printk(KERN_INFO PFX "%s: powering down PHY\n", bp->dev->name); |
| 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]; |
| len++; |
| 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) { |
| printk(KERN_ERR PFX "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 = &bp->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 dev_mc_list *mclist; |
| int i, num_ents; |
| |
| num_ents = min_t(int, dev->mc_count, B44_MCAST_TABLE_SIZE); |
| mclist = dev->mc_list; |
| for (i = 0; mclist && i < num_ents; i++, mclist = mclist->next) { |
| __b44_cam_write(bp, mclist->dmi_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) || |
| (dev->mc_count > 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; |
| |
| strncpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); |
| strncpy(info->version, DRV_MODULE_VERSION, sizeof(info->driver)); |
| switch (bus->bustype) { |
| case SSB_BUSTYPE_PCI: |
| strncpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info)); |
| break; |
| case SSB_BUSTYPE_PCMCIA: |
| case SSB_BUSTYPE_SSB: |
| strncpy(info->bus_info, "SSB", sizeof(info->bus_info)); |
| 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; |
| cmd->speed = (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)){ |
| cmd->speed = 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); |
| |
| /* We do not support gigabit. */ |
| if (cmd->autoneg == AUTONEG_ENABLE) { |
| if (cmd->advertising & |
| (ADVERTISED_1000baseT_Half | |
| ADVERTISED_1000baseT_Full)) |
| return -EINVAL; |
| } else if ((cmd->speed != SPEED_100 && |
| cmd->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 (cmd->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])){ |
| printk(KERN_ERR PFX "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 int __devinit b44_init_one(struct ssb_device *sdev, |
| const struct ssb_device_id *ent) |
| { |
| static int b44_version_printed = 0; |
| struct net_device *dev; |
| struct b44 *bp; |
| int err; |
| |
| instance++; |
| |
| if (b44_version_printed++ == 0) |
| printk(KERN_INFO "%s", 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->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->open = b44_open; |
| dev->stop = b44_close; |
| dev->hard_start_xmit = b44_start_xmit; |
| dev->get_stats = b44_get_stats; |
| dev->set_multicast_list = b44_set_rx_mode; |
| dev->set_mac_address = b44_set_mac_addr; |
| dev->do_ioctl = b44_ioctl; |
| dev->tx_timeout = b44_tx_timeout; |
| netif_napi_add(dev, &bp->napi, b44_poll, 64); |
| dev->watchdog_timeo = B44_TX_TIMEOUT; |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| dev->poll_controller = b44_poll_controller; |
| #endif |
| dev->change_mtu = b44_change_mtu; |
| dev->irq = sdev->irq; |
| SET_ETHTOOL_OPS(dev, &b44_ethtool_ops); |
| |
| netif_carrier_off(dev); |
| |
| err = ssb_bus_powerup(sdev->bus, 0); |
| if (err) { |
| dev_err(sdev->dev, |
| "Failed to powerup the bus\n"); |
| goto err_out_free_dev; |
| } |
| err = ssb_dma_set_mask(sdev, DMA_30BIT_MASK); |
| if (err) { |
| 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; |
| } |
| |
| 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); |
| |
| printk(KERN_INFO "%s: Broadcom 44xx/47xx 10/100BaseT Ethernet %pM\n", |
| dev->name, 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_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; |
| |
| rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev); |
| if (rc) { |
| printk(KERN_ERR PFX "%s: request_irq failed\n", dev->name); |
| return rc; |
| } |
| |
| spin_lock_irq(&bp->lock); |
| |
| b44_init_rings(bp); |
| b44_init_hw(bp, B44_FULL_RESET); |
| netif_device_attach(bp->dev); |
| spin_unlock_irq(&bp->lock); |
| |
| 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 b44_pci_init(void) |
| { |
| int err = 0; |
| #ifdef CONFIG_B44_PCI |
| err = ssb_pcihost_register(&b44_pci_driver); |
| #endif |
| return err; |
| } |
| |
| static inline void 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_align_mask = ~(dma_desc_align_size - 1); |
| 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); |
| |