From 58565a35eab01eb5fba928af23d31a636d03a056 Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Sat, 23 Jul 2011 23:26:01 -0700 Subject: r6040: Move the RDC driver Move the RDC driver into drivers/net/ethernet/rdc/ and make the necessary Kconfig and Makefile changes. CC: Florian Fainelli Signed-off-by: Jeff Kirsher --- MAINTAINERS | 2 +- drivers/net/Kconfig | 13 - drivers/net/Makefile | 1 - drivers/net/ethernet/Kconfig | 1 + drivers/net/ethernet/Makefile | 1 + drivers/net/ethernet/rdc/Kconfig | 33 + drivers/net/ethernet/rdc/Makefile | 5 + drivers/net/ethernet/rdc/r6040.c | 1276 +++++++++++++++++++++++++++++++++++++ drivers/net/r6040.c | 1276 ------------------------------------- 9 files changed, 1317 insertions(+), 1291 deletions(-) create mode 100644 drivers/net/ethernet/rdc/Kconfig create mode 100644 drivers/net/ethernet/rdc/Makefile create mode 100644 drivers/net/ethernet/rdc/r6040.c delete mode 100644 drivers/net/r6040.c diff --git a/MAINTAINERS b/MAINTAINERS index ae60f8c7c65d..ca3ec84c4f2c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5343,7 +5343,7 @@ RDC R6040 FAST ETHERNET DRIVER M: Florian Fainelli L: netdev@vger.kernel.org S: Maintained -F: drivers/net/r6040.c +F: drivers/net/ethernet/rdc/r6040.c RDS - RELIABLE DATAGRAM SOCKETS M: Andy Grover diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 3f6622c3f806..ca3afb530eec 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -379,19 +379,6 @@ config FEALNX Say Y here to support the Myson MTD-800 family of PCI-based Ethernet cards. -config R6040 - tristate "RDC R6040 Fast Ethernet Adapter support" - depends on NET_PCI && PCI - select CRC32 - select MII - select PHYLIB - help - This is a driver for the R6040 Fast Ethernet MACs found in the - the RDC R-321x System-on-chips. - - To compile this driver as a module, choose M here: the module - will be called r6040. This is recommended. - config NET_POCKET bool "Pocket and portable adapters" depends on PARPORT diff --git a/drivers/net/Makefile b/drivers/net/Makefile index d7873bad9ddd..051439fc433a 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -16,7 +16,6 @@ obj-$(CONFIG_PLIP) += plip.o obj-$(CONFIG_ROADRUNNER) += rrunner.o -obj-$(CONFIG_R6040) += r6040.o obj-$(CONFIG_FEALNX) += fealnx.o obj-$(CONFIG_SKFP) += skfp/ obj-$(CONFIG_ADAPTEC_STARFIRE) += starfire.o diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index 68a31b9d7acc..78e567ff5a74 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -83,6 +83,7 @@ source "drivers/net/ethernet/pasemi/Kconfig" source "drivers/net/ethernet/qlogic/Kconfig" source "drivers/net/ethernet/racal/Kconfig" source "drivers/net/ethernet/realtek/Kconfig" +source "drivers/net/ethernet/rdc/Kconfig" config S6GMAC tristate "S6105 GMAC ethernet support" diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index 0e91c4db9117..48d32095f9af 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_NET_VENDOR_PASEMI) += pasemi/ obj-$(CONFIG_NET_VENDOR_QLOGIC) += qlogic/ obj-$(CONFIG_NET_VENDOR_RACAL) += racal/ obj-$(CONFIG_NET_VENDOR_REALTEK) += realtek/ +obj-$(CONFIG_NET_VENDOR_RDC) += rdc/ obj-$(CONFIG_S6GMAC) += s6gmac.o obj-$(CONFIG_NET_VENDOR_SEEQ) += seeq/ obj-$(CONFIG_NET_VENDOR_SIS) += sis/ diff --git a/drivers/net/ethernet/rdc/Kconfig b/drivers/net/ethernet/rdc/Kconfig new file mode 100644 index 000000000000..b15ebac75f51 --- /dev/null +++ b/drivers/net/ethernet/rdc/Kconfig @@ -0,0 +1,33 @@ +# +# RDC network device configuration +# + +config NET_VENDOR_RDC + bool "RDC devices" + depends on PCI + ---help--- + If you have a network (Ethernet) card belonging to this class, say Y + and read the Ethernet-HOWTO, available from + . + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about RDC cards. If you say Y, you will be asked for + your specific card in the following questions. + +if NET_VENDOR_RDC + +config R6040 + tristate "RDC R6040 Fast Ethernet Adapter support" + depends on PCI + select CRC32 + select MII + select PHYLIB + ---help--- + This is a driver for the R6040 Fast Ethernet MACs found in the + the RDC R-321x System-on-chips. + + To compile this driver as a module, choose M here: the module + will be called r6040. This is recommended. + +endif # NET_VENDOR_RDC diff --git a/drivers/net/ethernet/rdc/Makefile b/drivers/net/ethernet/rdc/Makefile new file mode 100644 index 000000000000..8d51fd2d07fc --- /dev/null +++ b/drivers/net/ethernet/rdc/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the RDC network device drivers. +# + +obj-$(CONFIG_R6040) += r6040.o diff --git a/drivers/net/ethernet/rdc/r6040.c b/drivers/net/ethernet/rdc/r6040.c new file mode 100644 index 000000000000..b64fcee483aa --- /dev/null +++ b/drivers/net/ethernet/rdc/r6040.c @@ -0,0 +1,1276 @@ +/* + * RDC R6040 Fast Ethernet MAC support + * + * Copyright (C) 2004 Sten Wang + * Copyright (C) 2007 + * Daniel Gimpelevich + * Florian Fainelli + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define DRV_NAME "r6040" +#define DRV_VERSION "0.27" +#define DRV_RELDATE "23Feb2011" + +/* PHY CHIP Address */ +#define PHY1_ADDR 1 /* For MAC1 */ +#define PHY2_ADDR 3 /* For MAC2 */ +#define PHY_MODE 0x3100 /* PHY CHIP Register 0 */ +#define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */ + +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (6000 * HZ / 1000) + +/* RDC MAC I/O Size */ +#define R6040_IO_SIZE 256 + +/* MAX RDC MAC */ +#define MAX_MAC 2 + +/* MAC registers */ +#define MCR0 0x00 /* Control register 0 */ +#define MCR0_PROMISC 0x0020 /* Promiscuous mode */ +#define MCR0_HASH_EN 0x0100 /* Enable multicast hash table function */ +#define MCR1 0x04 /* Control register 1 */ +#define MAC_RST 0x0001 /* Reset the MAC */ +#define MBCR 0x08 /* Bus control */ +#define MT_ICR 0x0C /* TX interrupt control */ +#define MR_ICR 0x10 /* RX interrupt control */ +#define MTPR 0x14 /* TX poll command register */ +#define MR_BSR 0x18 /* RX buffer size */ +#define MR_DCR 0x1A /* RX descriptor control */ +#define MLSR 0x1C /* Last status */ +#define MMDIO 0x20 /* MDIO control register */ +#define MDIO_WRITE 0x4000 /* MDIO write */ +#define MDIO_READ 0x2000 /* MDIO read */ +#define MMRD 0x24 /* MDIO read data register */ +#define MMWD 0x28 /* MDIO write data register */ +#define MTD_SA0 0x2C /* TX descriptor start address 0 */ +#define MTD_SA1 0x30 /* TX descriptor start address 1 */ +#define MRD_SA0 0x34 /* RX descriptor start address 0 */ +#define MRD_SA1 0x38 /* RX descriptor start address 1 */ +#define MISR 0x3C /* Status register */ +#define MIER 0x40 /* INT enable register */ +#define MSK_INT 0x0000 /* Mask off interrupts */ +#define RX_FINISH 0x0001 /* RX finished */ +#define RX_NO_DESC 0x0002 /* No RX descriptor available */ +#define RX_FIFO_FULL 0x0004 /* RX FIFO full */ +#define RX_EARLY 0x0008 /* RX early */ +#define TX_FINISH 0x0010 /* TX finished */ +#define TX_EARLY 0x0080 /* TX early */ +#define EVENT_OVRFL 0x0100 /* Event counter overflow */ +#define LINK_CHANGED 0x0200 /* PHY link changed */ +#define ME_CISR 0x44 /* Event counter INT status */ +#define ME_CIER 0x48 /* Event counter INT enable */ +#define MR_CNT 0x50 /* Successfully received packet counter */ +#define ME_CNT0 0x52 /* Event counter 0 */ +#define ME_CNT1 0x54 /* Event counter 1 */ +#define ME_CNT2 0x56 /* Event counter 2 */ +#define ME_CNT3 0x58 /* Event counter 3 */ +#define MT_CNT 0x5A /* Successfully transmit packet counter */ +#define ME_CNT4 0x5C /* Event counter 4 */ +#define MP_CNT 0x5E /* Pause frame counter register */ +#define MAR0 0x60 /* Hash table 0 */ +#define MAR1 0x62 /* Hash table 1 */ +#define MAR2 0x64 /* Hash table 2 */ +#define MAR3 0x66 /* Hash table 3 */ +#define MID_0L 0x68 /* Multicast address MID0 Low */ +#define MID_0M 0x6A /* Multicast address MID0 Medium */ +#define MID_0H 0x6C /* Multicast address MID0 High */ +#define MID_1L 0x70 /* MID1 Low */ +#define MID_1M 0x72 /* MID1 Medium */ +#define MID_1H 0x74 /* MID1 High */ +#define MID_2L 0x78 /* MID2 Low */ +#define MID_2M 0x7A /* MID2 Medium */ +#define MID_2H 0x7C /* MID2 High */ +#define MID_3L 0x80 /* MID3 Low */ +#define MID_3M 0x82 /* MID3 Medium */ +#define MID_3H 0x84 /* MID3 High */ +#define PHY_CC 0x88 /* PHY status change configuration register */ +#define PHY_ST 0x8A /* PHY status register */ +#define MAC_SM 0xAC /* MAC status machine */ +#define MAC_ID 0xBE /* Identifier register */ + +#define TX_DCNT 0x80 /* TX descriptor count */ +#define RX_DCNT 0x80 /* RX descriptor count */ +#define MAX_BUF_SIZE 0x600 +#define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor)) +#define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor)) +#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */ +#define MCAST_MAX 3 /* Max number multicast addresses to filter */ + +/* Descriptor status */ +#define DSC_OWNER_MAC 0x8000 /* MAC is the owner of this descriptor */ +#define DSC_RX_OK 0x4000 /* RX was successful */ +#define DSC_RX_ERR 0x0800 /* RX PHY error */ +#define DSC_RX_ERR_DRI 0x0400 /* RX dribble packet */ +#define DSC_RX_ERR_BUF 0x0200 /* RX length exceeds buffer size */ +#define DSC_RX_ERR_LONG 0x0100 /* RX length > maximum packet length */ +#define DSC_RX_ERR_RUNT 0x0080 /* RX packet length < 64 byte */ +#define DSC_RX_ERR_CRC 0x0040 /* RX CRC error */ +#define DSC_RX_BCAST 0x0020 /* RX broadcast (no error) */ +#define DSC_RX_MCAST 0x0010 /* RX multicast (no error) */ +#define DSC_RX_MCH_HIT 0x0008 /* RX multicast hit in hash table (no error) */ +#define DSC_RX_MIDH_HIT 0x0004 /* RX MID table hit (no error) */ +#define DSC_RX_IDX_MID_MASK 3 /* RX mask for the index of matched MIDx */ + +/* PHY settings */ +#define ICPLUS_PHY_ID 0x0243 + +MODULE_AUTHOR("Sten Wang ," + "Daniel Gimpelevich ," + "Florian Fainelli "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver"); +MODULE_VERSION(DRV_VERSION " " DRV_RELDATE); + +/* RX and TX interrupts that we handle */ +#define RX_INTS (RX_FIFO_FULL | RX_NO_DESC | RX_FINISH) +#define TX_INTS (TX_FINISH) +#define INT_MASK (RX_INTS | TX_INTS) + +struct r6040_descriptor { + u16 status, len; /* 0-3 */ + __le32 buf; /* 4-7 */ + __le32 ndesc; /* 8-B */ + u32 rev1; /* C-F */ + char *vbufp; /* 10-13 */ + struct r6040_descriptor *vndescp; /* 14-17 */ + struct sk_buff *skb_ptr; /* 18-1B */ + u32 rev2; /* 1C-1F */ +} __attribute__((aligned(32))); + +struct r6040_private { + spinlock_t lock; /* driver lock */ + struct pci_dev *pdev; + struct r6040_descriptor *rx_insert_ptr; + struct r6040_descriptor *rx_remove_ptr; + struct r6040_descriptor *tx_insert_ptr; + struct r6040_descriptor *tx_remove_ptr; + struct r6040_descriptor *rx_ring; + struct r6040_descriptor *tx_ring; + dma_addr_t rx_ring_dma; + dma_addr_t tx_ring_dma; + u16 tx_free_desc, phy_addr; + u16 mcr0, mcr1; + struct net_device *dev; + struct mii_bus *mii_bus; + struct napi_struct napi; + void __iomem *base; + struct phy_device *phydev; + int old_link; + int old_duplex; +}; + +static char version[] __devinitdata = DRV_NAME + ": RDC R6040 NAPI net driver," + "version "DRV_VERSION " (" DRV_RELDATE ")"; + +static int phy_table[] = { PHY1_ADDR, PHY2_ADDR }; + +/* Read a word data from PHY Chip */ +static int r6040_phy_read(void __iomem *ioaddr, int phy_addr, int reg) +{ + int limit = 2048; + u16 cmd; + + iowrite16(MDIO_READ + reg + (phy_addr << 8), ioaddr + MMDIO); + /* Wait for the read bit to be cleared */ + while (limit--) { + cmd = ioread16(ioaddr + MMDIO); + if (!(cmd & MDIO_READ)) + break; + } + + return ioread16(ioaddr + MMRD); +} + +/* Write a word data from PHY Chip */ +static void r6040_phy_write(void __iomem *ioaddr, + int phy_addr, int reg, u16 val) +{ + int limit = 2048; + u16 cmd; + + iowrite16(val, ioaddr + MMWD); + /* Write the command to the MDIO bus */ + iowrite16(MDIO_WRITE + reg + (phy_addr << 8), ioaddr + MMDIO); + /* Wait for the write bit to be cleared */ + while (limit--) { + cmd = ioread16(ioaddr + MMDIO); + if (!(cmd & MDIO_WRITE)) + break; + } +} + +static int r6040_mdiobus_read(struct mii_bus *bus, int phy_addr, int reg) +{ + struct net_device *dev = bus->priv; + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + + return r6040_phy_read(ioaddr, phy_addr, reg); +} + +static int r6040_mdiobus_write(struct mii_bus *bus, int phy_addr, + int reg, u16 value) +{ + struct net_device *dev = bus->priv; + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + + r6040_phy_write(ioaddr, phy_addr, reg, value); + + return 0; +} + +static int r6040_mdiobus_reset(struct mii_bus *bus) +{ + return 0; +} + +static void r6040_free_txbufs(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + int i; + + for (i = 0; i < TX_DCNT; i++) { + if (lp->tx_insert_ptr->skb_ptr) { + pci_unmap_single(lp->pdev, + le32_to_cpu(lp->tx_insert_ptr->buf), + MAX_BUF_SIZE, PCI_DMA_TODEVICE); + dev_kfree_skb(lp->tx_insert_ptr->skb_ptr); + lp->tx_insert_ptr->skb_ptr = NULL; + } + lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp; + } +} + +static void r6040_free_rxbufs(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + int i; + + for (i = 0; i < RX_DCNT; i++) { + if (lp->rx_insert_ptr->skb_ptr) { + pci_unmap_single(lp->pdev, + le32_to_cpu(lp->rx_insert_ptr->buf), + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); + dev_kfree_skb(lp->rx_insert_ptr->skb_ptr); + lp->rx_insert_ptr->skb_ptr = NULL; + } + lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp; + } +} + +static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring, + dma_addr_t desc_dma, int size) +{ + struct r6040_descriptor *desc = desc_ring; + dma_addr_t mapping = desc_dma; + + while (size-- > 0) { + mapping += sizeof(*desc); + desc->ndesc = cpu_to_le32(mapping); + desc->vndescp = desc + 1; + desc++; + } + desc--; + desc->ndesc = cpu_to_le32(desc_dma); + desc->vndescp = desc_ring; +} + +static void r6040_init_txbufs(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + + lp->tx_free_desc = TX_DCNT; + + lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring; + r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT); +} + +static int r6040_alloc_rxbufs(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + struct r6040_descriptor *desc; + struct sk_buff *skb; + int rc; + + lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring; + r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT); + + /* Allocate skbs for the rx descriptors */ + desc = lp->rx_ring; + do { + skb = netdev_alloc_skb(dev, MAX_BUF_SIZE); + if (!skb) { + netdev_err(dev, "failed to alloc skb for rx\n"); + rc = -ENOMEM; + goto err_exit; + } + desc->skb_ptr = skb; + desc->buf = cpu_to_le32(pci_map_single(lp->pdev, + desc->skb_ptr->data, + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); + desc->status = DSC_OWNER_MAC; + desc = desc->vndescp; + } while (desc != lp->rx_ring); + + return 0; + +err_exit: + /* Deallocate all previously allocated skbs */ + r6040_free_rxbufs(dev); + return rc; +} + +static void r6040_init_mac_regs(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + int limit = 2048; + u16 cmd; + + /* Mask Off Interrupt */ + iowrite16(MSK_INT, ioaddr + MIER); + + /* Reset RDC MAC */ + iowrite16(MAC_RST, ioaddr + MCR1); + while (limit--) { + cmd = ioread16(ioaddr + MCR1); + if (cmd & 0x1) + break; + } + /* Reset internal state machine */ + iowrite16(2, ioaddr + MAC_SM); + iowrite16(0, ioaddr + MAC_SM); + mdelay(5); + + /* MAC Bus Control Register */ + iowrite16(MBCR_DEFAULT, ioaddr + MBCR); + + /* Buffer Size Register */ + iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR); + + /* Write TX ring start address */ + iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0); + iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1); + + /* Write RX ring start address */ + iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0); + iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1); + + /* Set interrupt waiting time and packet numbers */ + iowrite16(0, ioaddr + MT_ICR); + iowrite16(0, ioaddr + MR_ICR); + + /* Enable interrupts */ + iowrite16(INT_MASK, ioaddr + MIER); + + /* Enable TX and RX */ + iowrite16(lp->mcr0 | 0x0002, ioaddr); + + /* Let TX poll the descriptors + * we may got called by r6040_tx_timeout which has left + * some unsent tx buffers */ + iowrite16(0x01, ioaddr + MTPR); +} + +static void r6040_tx_timeout(struct net_device *dev) +{ + struct r6040_private *priv = netdev_priv(dev); + void __iomem *ioaddr = priv->base; + + netdev_warn(dev, "transmit timed out, int enable %4.4x " + "status %4.4x\n", + ioread16(ioaddr + MIER), + ioread16(ioaddr + MISR)); + + dev->stats.tx_errors++; + + /* Reset MAC and re-init all registers */ + r6040_init_mac_regs(dev); +} + +static struct net_device_stats *r6040_get_stats(struct net_device *dev) +{ + struct r6040_private *priv = netdev_priv(dev); + void __iomem *ioaddr = priv->base; + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + dev->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1); + dev->stats.multicast += ioread8(ioaddr + ME_CNT0); + spin_unlock_irqrestore(&priv->lock, flags); + + return &dev->stats; +} + +/* Stop RDC MAC and Free the allocated resource */ +static void r6040_down(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + int limit = 2048; + u16 *adrp; + u16 cmd; + + /* Stop MAC */ + iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */ + iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */ + while (limit--) { + cmd = ioread16(ioaddr + MCR1); + if (cmd & 0x1) + break; + } + + /* Restore MAC Address to MIDx */ + adrp = (u16 *) dev->dev_addr; + iowrite16(adrp[0], ioaddr + MID_0L); + iowrite16(adrp[1], ioaddr + MID_0M); + iowrite16(adrp[2], ioaddr + MID_0H); +} + +static int r6040_close(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + struct pci_dev *pdev = lp->pdev; + + spin_lock_irq(&lp->lock); + napi_disable(&lp->napi); + netif_stop_queue(dev); + r6040_down(dev); + + free_irq(dev->irq, dev); + + /* Free RX buffer */ + r6040_free_rxbufs(dev); + + /* Free TX buffer */ + r6040_free_txbufs(dev); + + spin_unlock_irq(&lp->lock); + + /* Free Descriptor memory */ + if (lp->rx_ring) { + pci_free_consistent(pdev, + RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma); + lp->rx_ring = NULL; + } + + if (lp->tx_ring) { + pci_free_consistent(pdev, + TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma); + lp->tx_ring = NULL; + } + + return 0; +} + +static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct r6040_private *lp = netdev_priv(dev); + + if (!lp->phydev) + return -EINVAL; + + return phy_mii_ioctl(lp->phydev, rq, cmd); +} + +static int r6040_rx(struct net_device *dev, int limit) +{ + struct r6040_private *priv = netdev_priv(dev); + struct r6040_descriptor *descptr = priv->rx_remove_ptr; + struct sk_buff *skb_ptr, *new_skb; + int count = 0; + u16 err; + + /* Limit not reached and the descriptor belongs to the CPU */ + while (count < limit && !(descptr->status & DSC_OWNER_MAC)) { + /* Read the descriptor status */ + err = descptr->status; + /* Global error status set */ + if (err & DSC_RX_ERR) { + /* RX dribble */ + if (err & DSC_RX_ERR_DRI) + dev->stats.rx_frame_errors++; + /* Buffer length exceeded */ + if (err & DSC_RX_ERR_BUF) + dev->stats.rx_length_errors++; + /* Packet too long */ + if (err & DSC_RX_ERR_LONG) + dev->stats.rx_length_errors++; + /* Packet < 64 bytes */ + if (err & DSC_RX_ERR_RUNT) + dev->stats.rx_length_errors++; + /* CRC error */ + if (err & DSC_RX_ERR_CRC) { + spin_lock(&priv->lock); + dev->stats.rx_crc_errors++; + spin_unlock(&priv->lock); + } + goto next_descr; + } + + /* Packet successfully received */ + new_skb = netdev_alloc_skb(dev, MAX_BUF_SIZE); + if (!new_skb) { + dev->stats.rx_dropped++; + goto next_descr; + } + skb_ptr = descptr->skb_ptr; + skb_ptr->dev = priv->dev; + + /* Do not count the CRC */ + skb_put(skb_ptr, descptr->len - 4); + pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf), + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); + skb_ptr->protocol = eth_type_trans(skb_ptr, priv->dev); + + /* Send to upper layer */ + netif_receive_skb(skb_ptr); + dev->stats.rx_packets++; + dev->stats.rx_bytes += descptr->len - 4; + + /* put new skb into descriptor */ + descptr->skb_ptr = new_skb; + descptr->buf = cpu_to_le32(pci_map_single(priv->pdev, + descptr->skb_ptr->data, + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); + +next_descr: + /* put the descriptor back to the MAC */ + descptr->status = DSC_OWNER_MAC; + descptr = descptr->vndescp; + count++; + } + priv->rx_remove_ptr = descptr; + + return count; +} + +static void r6040_tx(struct net_device *dev) +{ + struct r6040_private *priv = netdev_priv(dev); + struct r6040_descriptor *descptr; + void __iomem *ioaddr = priv->base; + struct sk_buff *skb_ptr; + u16 err; + + spin_lock(&priv->lock); + descptr = priv->tx_remove_ptr; + while (priv->tx_free_desc < TX_DCNT) { + /* Check for errors */ + err = ioread16(ioaddr + MLSR); + + if (err & 0x0200) + dev->stats.rx_fifo_errors++; + if (err & (0x2000 | 0x4000)) + dev->stats.tx_carrier_errors++; + + if (descptr->status & DSC_OWNER_MAC) + break; /* Not complete */ + skb_ptr = descptr->skb_ptr; + pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf), + skb_ptr->len, PCI_DMA_TODEVICE); + /* Free buffer */ + dev_kfree_skb_irq(skb_ptr); + descptr->skb_ptr = NULL; + /* To next descriptor */ + descptr = descptr->vndescp; + priv->tx_free_desc++; + } + priv->tx_remove_ptr = descptr; + + if (priv->tx_free_desc) + netif_wake_queue(dev); + spin_unlock(&priv->lock); +} + +static int r6040_poll(struct napi_struct *napi, int budget) +{ + struct r6040_private *priv = + container_of(napi, struct r6040_private, napi); + struct net_device *dev = priv->dev; + void __iomem *ioaddr = priv->base; + int work_done; + + work_done = r6040_rx(dev, budget); + + if (work_done < budget) { + napi_complete(napi); + /* Enable RX interrupt */ + iowrite16(ioread16(ioaddr + MIER) | RX_INTS, ioaddr + MIER); + } + return work_done; +} + +/* The RDC interrupt handler. */ +static irqreturn_t r6040_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + u16 misr, status; + + /* Save MIER */ + misr = ioread16(ioaddr + MIER); + /* Mask off RDC MAC interrupt */ + iowrite16(MSK_INT, ioaddr + MIER); + /* Read MISR status and clear */ + status = ioread16(ioaddr + MISR); + + if (status == 0x0000 || status == 0xffff) { + /* Restore RDC MAC interrupt */ + iowrite16(misr, ioaddr + MIER); + return IRQ_NONE; + } + + /* RX interrupt request */ + if (status & RX_INTS) { + if (status & RX_NO_DESC) { + /* RX descriptor unavailable */ + dev->stats.rx_dropped++; + dev->stats.rx_missed_errors++; + } + if (status & RX_FIFO_FULL) + dev->stats.rx_fifo_errors++; + + if (likely(napi_schedule_prep(&lp->napi))) { + /* Mask off RX interrupt */ + misr &= ~RX_INTS; + __napi_schedule(&lp->napi); + } + } + + /* TX interrupt request */ + if (status & TX_INTS) + r6040_tx(dev); + + /* Restore RDC MAC interrupt */ + iowrite16(misr, ioaddr + MIER); + + return IRQ_HANDLED; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void r6040_poll_controller(struct net_device *dev) +{ + disable_irq(dev->irq); + r6040_interrupt(dev->irq, dev); + enable_irq(dev->irq); +} +#endif + +/* Init RDC MAC */ +static int r6040_up(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + int ret; + + /* Initialise and alloc RX/TX buffers */ + r6040_init_txbufs(dev); + ret = r6040_alloc_rxbufs(dev); + if (ret) + return ret; + + /* improve performance (by RDC guys) */ + r6040_phy_write(ioaddr, 30, 17, + (r6040_phy_read(ioaddr, 30, 17) | 0x4000)); + r6040_phy_write(ioaddr, 30, 17, + ~((~r6040_phy_read(ioaddr, 30, 17)) | 0x2000)); + r6040_phy_write(ioaddr, 0, 19, 0x0000); + r6040_phy_write(ioaddr, 0, 30, 0x01F0); + + /* Initialize all MAC registers */ + r6040_init_mac_regs(dev); + + return 0; +} + + +/* Read/set MAC address routines */ +static void r6040_mac_address(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + u16 *adrp; + + /* MAC operation register */ + iowrite16(0x01, ioaddr + MCR1); /* Reset MAC */ + iowrite16(2, ioaddr + MAC_SM); /* Reset internal state machine */ + iowrite16(0, ioaddr + MAC_SM); + mdelay(5); + + /* Restore MAC Address */ + adrp = (u16 *) dev->dev_addr; + iowrite16(adrp[0], ioaddr + MID_0L); + iowrite16(adrp[1], ioaddr + MID_0M); + iowrite16(adrp[2], ioaddr + MID_0H); + + /* Store MAC Address in perm_addr */ + memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); +} + +static int r6040_open(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + int ret; + + /* Request IRQ and Register interrupt handler */ + ret = request_irq(dev->irq, r6040_interrupt, + IRQF_SHARED, dev->name, dev); + if (ret) + goto out; + + /* Set MAC address */ + r6040_mac_address(dev); + + /* Allocate Descriptor memory */ + lp->rx_ring = + pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma); + if (!lp->rx_ring) { + ret = -ENOMEM; + goto err_free_irq; + } + + lp->tx_ring = + pci_alloc_consistent(lp->pdev, TX_DESC_SIZE, &lp->tx_ring_dma); + if (!lp->tx_ring) { + ret = -ENOMEM; + goto err_free_rx_ring; + } + + ret = r6040_up(dev); + if (ret) + goto err_free_tx_ring; + + napi_enable(&lp->napi); + netif_start_queue(dev); + + return 0; + +err_free_tx_ring: + pci_free_consistent(lp->pdev, TX_DESC_SIZE, lp->tx_ring, + lp->tx_ring_dma); +err_free_rx_ring: + pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring, + lp->rx_ring_dma); +err_free_irq: + free_irq(dev->irq, dev); +out: + return ret; +} + +static netdev_tx_t r6040_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + struct r6040_descriptor *descptr; + void __iomem *ioaddr = lp->base; + unsigned long flags; + + /* Critical Section */ + spin_lock_irqsave(&lp->lock, flags); + + /* TX resource check */ + if (!lp->tx_free_desc) { + spin_unlock_irqrestore(&lp->lock, flags); + netif_stop_queue(dev); + netdev_err(dev, ": no tx descriptor\n"); + return NETDEV_TX_BUSY; + } + + /* Statistic Counter */ + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + /* Set TX descriptor & Transmit it */ + lp->tx_free_desc--; + descptr = lp->tx_insert_ptr; + if (skb->len < MISR) + descptr->len = MISR; + else + descptr->len = skb->len; + + descptr->skb_ptr = skb; + descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, + skb->data, skb->len, PCI_DMA_TODEVICE)); + descptr->status = DSC_OWNER_MAC; + + skb_tx_timestamp(skb); + + /* Trigger the MAC to check the TX descriptor */ + iowrite16(0x01, ioaddr + MTPR); + lp->tx_insert_ptr = descptr->vndescp; + + /* If no tx resource, stop */ + if (!lp->tx_free_desc) + netif_stop_queue(dev); + + spin_unlock_irqrestore(&lp->lock, flags); + + return NETDEV_TX_OK; +} + +static void r6040_multicast_list(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + unsigned long flags; + struct netdev_hw_addr *ha; + int i; + u16 *adrp; + u16 hash_table[4] = { 0 }; + + spin_lock_irqsave(&lp->lock, flags); + + /* Keep our MAC Address */ + adrp = (u16 *)dev->dev_addr; + iowrite16(adrp[0], ioaddr + MID_0L); + iowrite16(adrp[1], ioaddr + MID_0M); + iowrite16(adrp[2], ioaddr + MID_0H); + + /* Clear AMCP & PROM bits */ + lp->mcr0 = ioread16(ioaddr + MCR0) & ~(MCR0_PROMISC | MCR0_HASH_EN); + + /* Promiscuous mode */ + if (dev->flags & IFF_PROMISC) + lp->mcr0 |= MCR0_PROMISC; + + /* Enable multicast hash table function to + * receive all multicast packets. */ + else if (dev->flags & IFF_ALLMULTI) { + lp->mcr0 |= MCR0_HASH_EN; + + for (i = 0; i < MCAST_MAX ; i++) { + iowrite16(0, ioaddr + MID_1L + 8 * i); + iowrite16(0, ioaddr + MID_1M + 8 * i); + iowrite16(0, ioaddr + MID_1H + 8 * i); + } + + for (i = 0; i < 4; i++) + hash_table[i] = 0xffff; + } + /* Use internal multicast address registers if the number of + * multicast addresses is not greater than MCAST_MAX. */ + else if (netdev_mc_count(dev) <= MCAST_MAX) { + i = 0; + netdev_for_each_mc_addr(ha, dev) { + u16 *adrp = (u16 *) ha->addr; + iowrite16(adrp[0], ioaddr + MID_1L + 8 * i); + iowrite16(adrp[1], ioaddr + MID_1M + 8 * i); + iowrite16(adrp[2], ioaddr + MID_1H + 8 * i); + i++; + } + while (i < MCAST_MAX) { + iowrite16(0, ioaddr + MID_1L + 8 * i); + iowrite16(0, ioaddr + MID_1M + 8 * i); + iowrite16(0, ioaddr + MID_1H + 8 * i); + i++; + } + } + /* Otherwise, Enable multicast hash table function. */ + else { + u32 crc; + + lp->mcr0 |= MCR0_HASH_EN; + + for (i = 0; i < MCAST_MAX ; i++) { + iowrite16(0, ioaddr + MID_1L + 8 * i); + iowrite16(0, ioaddr + MID_1M + 8 * i); + iowrite16(0, ioaddr + MID_1H + 8 * i); + } + + /* Build multicast hash table */ + netdev_for_each_mc_addr(ha, dev) { + u8 *addrs = ha->addr; + + crc = ether_crc(ETH_ALEN, addrs); + crc >>= 26; + hash_table[crc >> 4] |= 1 << (crc & 0xf); + } + } + + iowrite16(lp->mcr0, ioaddr + MCR0); + + /* Fill the MAC hash tables with their values */ + if (lp->mcr0 && MCR0_HASH_EN) { + iowrite16(hash_table[0], ioaddr + MAR0); + iowrite16(hash_table[1], ioaddr + MAR1); + iowrite16(hash_table[2], ioaddr + MAR2); + iowrite16(hash_table[3], ioaddr + MAR3); + } + + spin_unlock_irqrestore(&lp->lock, flags); +} + +static void netdev_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct r6040_private *rp = netdev_priv(dev); + + strcpy(info->driver, DRV_NAME); + strcpy(info->version, DRV_VERSION); + strcpy(info->bus_info, pci_name(rp->pdev)); +} + +static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct r6040_private *rp = netdev_priv(dev); + + return phy_ethtool_gset(rp->phydev, cmd); +} + +static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct r6040_private *rp = netdev_priv(dev); + + return phy_ethtool_sset(rp->phydev, cmd); +} + +static const struct ethtool_ops netdev_ethtool_ops = { + .get_drvinfo = netdev_get_drvinfo, + .get_settings = netdev_get_settings, + .set_settings = netdev_set_settings, + .get_link = ethtool_op_get_link, +}; + +static const struct net_device_ops r6040_netdev_ops = { + .ndo_open = r6040_open, + .ndo_stop = r6040_close, + .ndo_start_xmit = r6040_start_xmit, + .ndo_get_stats = r6040_get_stats, + .ndo_set_multicast_list = r6040_multicast_list, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, + .ndo_do_ioctl = r6040_ioctl, + .ndo_tx_timeout = r6040_tx_timeout, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = r6040_poll_controller, +#endif +}; + +static void r6040_adjust_link(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + struct phy_device *phydev = lp->phydev; + int status_changed = 0; + void __iomem *ioaddr = lp->base; + + BUG_ON(!phydev); + + if (lp->old_link != phydev->link) { + status_changed = 1; + lp->old_link = phydev->link; + } + + /* reflect duplex change */ + if (phydev->link && (lp->old_duplex != phydev->duplex)) { + lp->mcr0 |= (phydev->duplex == DUPLEX_FULL ? 0x8000 : 0); + iowrite16(lp->mcr0, ioaddr); + + status_changed = 1; + lp->old_duplex = phydev->duplex; + } + + if (status_changed) { + pr_info("%s: link %s", dev->name, phydev->link ? + "UP" : "DOWN"); + if (phydev->link) + pr_cont(" - %d/%s", phydev->speed, + DUPLEX_FULL == phydev->duplex ? "full" : "half"); + pr_cont("\n"); + } +} + +static int r6040_mii_probe(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + struct phy_device *phydev = NULL; + + phydev = phy_find_first(lp->mii_bus); + if (!phydev) { + dev_err(&lp->pdev->dev, "no PHY found\n"); + return -ENODEV; + } + + phydev = phy_connect(dev, dev_name(&phydev->dev), &r6040_adjust_link, + 0, PHY_INTERFACE_MODE_MII); + + if (IS_ERR(phydev)) { + dev_err(&lp->pdev->dev, "could not attach to PHY\n"); + return PTR_ERR(phydev); + } + + /* mask with MAC supported features */ + phydev->supported &= (SUPPORTED_10baseT_Half + | SUPPORTED_10baseT_Full + | SUPPORTED_100baseT_Half + | SUPPORTED_100baseT_Full + | SUPPORTED_Autoneg + | SUPPORTED_MII + | SUPPORTED_TP); + + phydev->advertising = phydev->supported; + lp->phydev = phydev; + lp->old_link = 0; + lp->old_duplex = -1; + + dev_info(&lp->pdev->dev, "attached PHY driver [%s] " + "(mii_bus:phy_addr=%s)\n", + phydev->drv->name, dev_name(&phydev->dev)); + + return 0; +} + +static int __devinit r6040_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct net_device *dev; + struct r6040_private *lp; + void __iomem *ioaddr; + int err, io_size = R6040_IO_SIZE; + static int card_idx = -1; + int bar = 0; + u16 *adrp; + int i; + + pr_info("%s\n", version); + + err = pci_enable_device(pdev); + if (err) + goto err_out; + + /* this should always be supported */ + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { + dev_err(&pdev->dev, "32-bit PCI DMA addresses" + "not supported by the card\n"); + goto err_out; + } + err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { + dev_err(&pdev->dev, "32-bit PCI DMA addresses" + "not supported by the card\n"); + goto err_out; + } + + /* IO Size check */ + if (pci_resource_len(pdev, bar) < io_size) { + dev_err(&pdev->dev, "Insufficient PCI resources, aborting\n"); + err = -EIO; + goto err_out; + } + + pci_set_master(pdev); + + dev = alloc_etherdev(sizeof(struct r6040_private)); + if (!dev) { + dev_err(&pdev->dev, "Failed to allocate etherdev\n"); + err = -ENOMEM; + goto err_out; + } + SET_NETDEV_DEV(dev, &pdev->dev); + lp = netdev_priv(dev); + + err = pci_request_regions(pdev, DRV_NAME); + + if (err) { + dev_err(&pdev->dev, "Failed to request PCI regions\n"); + goto err_out_free_dev; + } + + ioaddr = pci_iomap(pdev, bar, io_size); + if (!ioaddr) { + dev_err(&pdev->dev, "ioremap failed for device\n"); + err = -EIO; + goto err_out_free_res; + } + /* If PHY status change register is still set to zero it means the + * bootloader didn't initialize it */ + if (ioread16(ioaddr + PHY_CC) == 0) + iowrite16(0x9f07, ioaddr + PHY_CC); + + /* Init system & device */ + lp->base = ioaddr; + dev->irq = pdev->irq; + + spin_lock_init(&lp->lock); + pci_set_drvdata(pdev, dev); + + /* Set MAC address */ + card_idx++; + + adrp = (u16 *)dev->dev_addr; + adrp[0] = ioread16(ioaddr + MID_0L); + adrp[1] = ioread16(ioaddr + MID_0M); + adrp[2] = ioread16(ioaddr + MID_0H); + + /* Some bootloader/BIOSes do not initialize + * MAC address, warn about that */ + if (!(adrp[0] || adrp[1] || adrp[2])) { + netdev_warn(dev, "MAC address not initialized, " + "generating random\n"); + random_ether_addr(dev->dev_addr); + } + + /* Link new device into r6040_root_dev */ + lp->pdev = pdev; + lp->dev = dev; + + /* Init RDC private data */ + lp->mcr0 = 0x1002; + lp->phy_addr = phy_table[card_idx]; + + /* The RDC-specific entries in the device structure. */ + dev->netdev_ops = &r6040_netdev_ops; + dev->ethtool_ops = &netdev_ethtool_ops; + dev->watchdog_timeo = TX_TIMEOUT; + + netif_napi_add(dev, &lp->napi, r6040_poll, 64); + + lp->mii_bus = mdiobus_alloc(); + if (!lp->mii_bus) { + dev_err(&pdev->dev, "mdiobus_alloc() failed\n"); + err = -ENOMEM; + goto err_out_unmap; + } + + lp->mii_bus->priv = dev; + lp->mii_bus->read = r6040_mdiobus_read; + lp->mii_bus->write = r6040_mdiobus_write; + lp->mii_bus->reset = r6040_mdiobus_reset; + lp->mii_bus->name = "r6040_eth_mii"; + snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x", card_idx); + lp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); + if (!lp->mii_bus->irq) { + dev_err(&pdev->dev, "mii_bus irq allocation failed\n"); + err = -ENOMEM; + goto err_out_mdio; + } + + for (i = 0; i < PHY_MAX_ADDR; i++) + lp->mii_bus->irq[i] = PHY_POLL; + + err = mdiobus_register(lp->mii_bus); + if (err) { + dev_err(&pdev->dev, "failed to register MII bus\n"); + goto err_out_mdio_irq; + } + + err = r6040_mii_probe(dev); + if (err) { + dev_err(&pdev->dev, "failed to probe MII bus\n"); + goto err_out_mdio_unregister; + } + + /* Register net device. After this dev->name assign */ + err = register_netdev(dev); + if (err) { + dev_err(&pdev->dev, "Failed to register net device\n"); + goto err_out_mdio_unregister; + } + return 0; + +err_out_mdio_unregister: + mdiobus_unregister(lp->mii_bus); +err_out_mdio_irq: + kfree(lp->mii_bus->irq); +err_out_mdio: + mdiobus_free(lp->mii_bus); +err_out_unmap: + pci_iounmap(pdev, ioaddr); +err_out_free_res: + pci_release_regions(pdev); +err_out_free_dev: + free_netdev(dev); +err_out: + return err; +} + +static void __devexit r6040_remove_one(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct r6040_private *lp = netdev_priv(dev); + + unregister_netdev(dev); + mdiobus_unregister(lp->mii_bus); + kfree(lp->mii_bus->irq); + mdiobus_free(lp->mii_bus); + pci_release_regions(pdev); + free_netdev(dev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); +} + + +static DEFINE_PCI_DEVICE_TABLE(r6040_pci_tbl) = { + { PCI_DEVICE(PCI_VENDOR_ID_RDC, 0x6040) }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, r6040_pci_tbl); + +static struct pci_driver r6040_driver = { + .name = DRV_NAME, + .id_table = r6040_pci_tbl, + .probe = r6040_init_one, + .remove = __devexit_p(r6040_remove_one), +}; + + +static int __init r6040_init(void) +{ + return pci_register_driver(&r6040_driver); +} + + +static void __exit r6040_cleanup(void) +{ + pci_unregister_driver(&r6040_driver); +} + +module_init(r6040_init); +module_exit(r6040_cleanup); diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c deleted file mode 100644 index b64fcee483aa..000000000000 --- a/drivers/net/r6040.c +++ /dev/null @@ -1,1276 +0,0 @@ -/* - * RDC R6040 Fast Ethernet MAC support - * - * Copyright (C) 2004 Sten Wang - * Copyright (C) 2007 - * Daniel Gimpelevich - * Florian Fainelli - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the - * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. -*/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#define DRV_NAME "r6040" -#define DRV_VERSION "0.27" -#define DRV_RELDATE "23Feb2011" - -/* PHY CHIP Address */ -#define PHY1_ADDR 1 /* For MAC1 */ -#define PHY2_ADDR 3 /* For MAC2 */ -#define PHY_MODE 0x3100 /* PHY CHIP Register 0 */ -#define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */ - -/* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (6000 * HZ / 1000) - -/* RDC MAC I/O Size */ -#define R6040_IO_SIZE 256 - -/* MAX RDC MAC */ -#define MAX_MAC 2 - -/* MAC registers */ -#define MCR0 0x00 /* Control register 0 */ -#define MCR0_PROMISC 0x0020 /* Promiscuous mode */ -#define MCR0_HASH_EN 0x0100 /* Enable multicast hash table function */ -#define MCR1 0x04 /* Control register 1 */ -#define MAC_RST 0x0001 /* Reset the MAC */ -#define MBCR 0x08 /* Bus control */ -#define MT_ICR 0x0C /* TX interrupt control */ -#define MR_ICR 0x10 /* RX interrupt control */ -#define MTPR 0x14 /* TX poll command register */ -#define MR_BSR 0x18 /* RX buffer size */ -#define MR_DCR 0x1A /* RX descriptor control */ -#define MLSR 0x1C /* Last status */ -#define MMDIO 0x20 /* MDIO control register */ -#define MDIO_WRITE 0x4000 /* MDIO write */ -#define MDIO_READ 0x2000 /* MDIO read */ -#define MMRD 0x24 /* MDIO read data register */ -#define MMWD 0x28 /* MDIO write data register */ -#define MTD_SA0 0x2C /* TX descriptor start address 0 */ -#define MTD_SA1 0x30 /* TX descriptor start address 1 */ -#define MRD_SA0 0x34 /* RX descriptor start address 0 */ -#define MRD_SA1 0x38 /* RX descriptor start address 1 */ -#define MISR 0x3C /* Status register */ -#define MIER 0x40 /* INT enable register */ -#define MSK_INT 0x0000 /* Mask off interrupts */ -#define RX_FINISH 0x0001 /* RX finished */ -#define RX_NO_DESC 0x0002 /* No RX descriptor available */ -#define RX_FIFO_FULL 0x0004 /* RX FIFO full */ -#define RX_EARLY 0x0008 /* RX early */ -#define TX_FINISH 0x0010 /* TX finished */ -#define TX_EARLY 0x0080 /* TX early */ -#define EVENT_OVRFL 0x0100 /* Event counter overflow */ -#define LINK_CHANGED 0x0200 /* PHY link changed */ -#define ME_CISR 0x44 /* Event counter INT status */ -#define ME_CIER 0x48 /* Event counter INT enable */ -#define MR_CNT 0x50 /* Successfully received packet counter */ -#define ME_CNT0 0x52 /* Event counter 0 */ -#define ME_CNT1 0x54 /* Event counter 1 */ -#define ME_CNT2 0x56 /* Event counter 2 */ -#define ME_CNT3 0x58 /* Event counter 3 */ -#define MT_CNT 0x5A /* Successfully transmit packet counter */ -#define ME_CNT4 0x5C /* Event counter 4 */ -#define MP_CNT 0x5E /* Pause frame counter register */ -#define MAR0 0x60 /* Hash table 0 */ -#define MAR1 0x62 /* Hash table 1 */ -#define MAR2 0x64 /* Hash table 2 */ -#define MAR3 0x66 /* Hash table 3 */ -#define MID_0L 0x68 /* Multicast address MID0 Low */ -#define MID_0M 0x6A /* Multicast address MID0 Medium */ -#define MID_0H 0x6C /* Multicast address MID0 High */ -#define MID_1L 0x70 /* MID1 Low */ -#define MID_1M 0x72 /* MID1 Medium */ -#define MID_1H 0x74 /* MID1 High */ -#define MID_2L 0x78 /* MID2 Low */ -#define MID_2M 0x7A /* MID2 Medium */ -#define MID_2H 0x7C /* MID2 High */ -#define MID_3L 0x80 /* MID3 Low */ -#define MID_3M 0x82 /* MID3 Medium */ -#define MID_3H 0x84 /* MID3 High */ -#define PHY_CC 0x88 /* PHY status change configuration register */ -#define PHY_ST 0x8A /* PHY status register */ -#define MAC_SM 0xAC /* MAC status machine */ -#define MAC_ID 0xBE /* Identifier register */ - -#define TX_DCNT 0x80 /* TX descriptor count */ -#define RX_DCNT 0x80 /* RX descriptor count */ -#define MAX_BUF_SIZE 0x600 -#define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor)) -#define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor)) -#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */ -#define MCAST_MAX 3 /* Max number multicast addresses to filter */ - -/* Descriptor status */ -#define DSC_OWNER_MAC 0x8000 /* MAC is the owner of this descriptor */ -#define DSC_RX_OK 0x4000 /* RX was successful */ -#define DSC_RX_ERR 0x0800 /* RX PHY error */ -#define DSC_RX_ERR_DRI 0x0400 /* RX dribble packet */ -#define DSC_RX_ERR_BUF 0x0200 /* RX length exceeds buffer size */ -#define DSC_RX_ERR_LONG 0x0100 /* RX length > maximum packet length */ -#define DSC_RX_ERR_RUNT 0x0080 /* RX packet length < 64 byte */ -#define DSC_RX_ERR_CRC 0x0040 /* RX CRC error */ -#define DSC_RX_BCAST 0x0020 /* RX broadcast (no error) */ -#define DSC_RX_MCAST 0x0010 /* RX multicast (no error) */ -#define DSC_RX_MCH_HIT 0x0008 /* RX multicast hit in hash table (no error) */ -#define DSC_RX_MIDH_HIT 0x0004 /* RX MID table hit (no error) */ -#define DSC_RX_IDX_MID_MASK 3 /* RX mask for the index of matched MIDx */ - -/* PHY settings */ -#define ICPLUS_PHY_ID 0x0243 - -MODULE_AUTHOR("Sten Wang ," - "Daniel Gimpelevich ," - "Florian Fainelli "); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver"); -MODULE_VERSION(DRV_VERSION " " DRV_RELDATE); - -/* RX and TX interrupts that we handle */ -#define RX_INTS (RX_FIFO_FULL | RX_NO_DESC | RX_FINISH) -#define TX_INTS (TX_FINISH) -#define INT_MASK (RX_INTS | TX_INTS) - -struct r6040_descriptor { - u16 status, len; /* 0-3 */ - __le32 buf; /* 4-7 */ - __le32 ndesc; /* 8-B */ - u32 rev1; /* C-F */ - char *vbufp; /* 10-13 */ - struct r6040_descriptor *vndescp; /* 14-17 */ - struct sk_buff *skb_ptr; /* 18-1B */ - u32 rev2; /* 1C-1F */ -} __attribute__((aligned(32))); - -struct r6040_private { - spinlock_t lock; /* driver lock */ - struct pci_dev *pdev; - struct r6040_descriptor *rx_insert_ptr; - struct r6040_descriptor *rx_remove_ptr; - struct r6040_descriptor *tx_insert_ptr; - struct r6040_descriptor *tx_remove_ptr; - struct r6040_descriptor *rx_ring; - struct r6040_descriptor *tx_ring; - dma_addr_t rx_ring_dma; - dma_addr_t tx_ring_dma; - u16 tx_free_desc, phy_addr; - u16 mcr0, mcr1; - struct net_device *dev; - struct mii_bus *mii_bus; - struct napi_struct napi; - void __iomem *base; - struct phy_device *phydev; - int old_link; - int old_duplex; -}; - -static char version[] __devinitdata = DRV_NAME - ": RDC R6040 NAPI net driver," - "version "DRV_VERSION " (" DRV_RELDATE ")"; - -static int phy_table[] = { PHY1_ADDR, PHY2_ADDR }; - -/* Read a word data from PHY Chip */ -static int r6040_phy_read(void __iomem *ioaddr, int phy_addr, int reg) -{ - int limit = 2048; - u16 cmd; - - iowrite16(MDIO_READ + reg + (phy_addr << 8), ioaddr + MMDIO); - /* Wait for the read bit to be cleared */ - while (limit--) { - cmd = ioread16(ioaddr + MMDIO); - if (!(cmd & MDIO_READ)) - break; - } - - return ioread16(ioaddr + MMRD); -} - -/* Write a word data from PHY Chip */ -static void r6040_phy_write(void __iomem *ioaddr, - int phy_addr, int reg, u16 val) -{ - int limit = 2048; - u16 cmd; - - iowrite16(val, ioaddr + MMWD); - /* Write the command to the MDIO bus */ - iowrite16(MDIO_WRITE + reg + (phy_addr << 8), ioaddr + MMDIO); - /* Wait for the write bit to be cleared */ - while (limit--) { - cmd = ioread16(ioaddr + MMDIO); - if (!(cmd & MDIO_WRITE)) - break; - } -} - -static int r6040_mdiobus_read(struct mii_bus *bus, int phy_addr, int reg) -{ - struct net_device *dev = bus->priv; - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - - return r6040_phy_read(ioaddr, phy_addr, reg); -} - -static int r6040_mdiobus_write(struct mii_bus *bus, int phy_addr, - int reg, u16 value) -{ - struct net_device *dev = bus->priv; - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - - r6040_phy_write(ioaddr, phy_addr, reg, value); - - return 0; -} - -static int r6040_mdiobus_reset(struct mii_bus *bus) -{ - return 0; -} - -static void r6040_free_txbufs(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - int i; - - for (i = 0; i < TX_DCNT; i++) { - if (lp->tx_insert_ptr->skb_ptr) { - pci_unmap_single(lp->pdev, - le32_to_cpu(lp->tx_insert_ptr->buf), - MAX_BUF_SIZE, PCI_DMA_TODEVICE); - dev_kfree_skb(lp->tx_insert_ptr->skb_ptr); - lp->tx_insert_ptr->skb_ptr = NULL; - } - lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp; - } -} - -static void r6040_free_rxbufs(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - int i; - - for (i = 0; i < RX_DCNT; i++) { - if (lp->rx_insert_ptr->skb_ptr) { - pci_unmap_single(lp->pdev, - le32_to_cpu(lp->rx_insert_ptr->buf), - MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); - dev_kfree_skb(lp->rx_insert_ptr->skb_ptr); - lp->rx_insert_ptr->skb_ptr = NULL; - } - lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp; - } -} - -static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring, - dma_addr_t desc_dma, int size) -{ - struct r6040_descriptor *desc = desc_ring; - dma_addr_t mapping = desc_dma; - - while (size-- > 0) { - mapping += sizeof(*desc); - desc->ndesc = cpu_to_le32(mapping); - desc->vndescp = desc + 1; - desc++; - } - desc--; - desc->ndesc = cpu_to_le32(desc_dma); - desc->vndescp = desc_ring; -} - -static void r6040_init_txbufs(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - - lp->tx_free_desc = TX_DCNT; - - lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring; - r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT); -} - -static int r6040_alloc_rxbufs(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - struct r6040_descriptor *desc; - struct sk_buff *skb; - int rc; - - lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring; - r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT); - - /* Allocate skbs for the rx descriptors */ - desc = lp->rx_ring; - do { - skb = netdev_alloc_skb(dev, MAX_BUF_SIZE); - if (!skb) { - netdev_err(dev, "failed to alloc skb for rx\n"); - rc = -ENOMEM; - goto err_exit; - } - desc->skb_ptr = skb; - desc->buf = cpu_to_le32(pci_map_single(lp->pdev, - desc->skb_ptr->data, - MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); - desc->status = DSC_OWNER_MAC; - desc = desc->vndescp; - } while (desc != lp->rx_ring); - - return 0; - -err_exit: - /* Deallocate all previously allocated skbs */ - r6040_free_rxbufs(dev); - return rc; -} - -static void r6040_init_mac_regs(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - int limit = 2048; - u16 cmd; - - /* Mask Off Interrupt */ - iowrite16(MSK_INT, ioaddr + MIER); - - /* Reset RDC MAC */ - iowrite16(MAC_RST, ioaddr + MCR1); - while (limit--) { - cmd = ioread16(ioaddr + MCR1); - if (cmd & 0x1) - break; - } - /* Reset internal state machine */ - iowrite16(2, ioaddr + MAC_SM); - iowrite16(0, ioaddr + MAC_SM); - mdelay(5); - - /* MAC Bus Control Register */ - iowrite16(MBCR_DEFAULT, ioaddr + MBCR); - - /* Buffer Size Register */ - iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR); - - /* Write TX ring start address */ - iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0); - iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1); - - /* Write RX ring start address */ - iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0); - iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1); - - /* Set interrupt waiting time and packet numbers */ - iowrite16(0, ioaddr + MT_ICR); - iowrite16(0, ioaddr + MR_ICR); - - /* Enable interrupts */ - iowrite16(INT_MASK, ioaddr + MIER); - - /* Enable TX and RX */ - iowrite16(lp->mcr0 | 0x0002, ioaddr); - - /* Let TX poll the descriptors - * we may got called by r6040_tx_timeout which has left - * some unsent tx buffers */ - iowrite16(0x01, ioaddr + MTPR); -} - -static void r6040_tx_timeout(struct net_device *dev) -{ - struct r6040_private *priv = netdev_priv(dev); - void __iomem *ioaddr = priv->base; - - netdev_warn(dev, "transmit timed out, int enable %4.4x " - "status %4.4x\n", - ioread16(ioaddr + MIER), - ioread16(ioaddr + MISR)); - - dev->stats.tx_errors++; - - /* Reset MAC and re-init all registers */ - r6040_init_mac_regs(dev); -} - -static struct net_device_stats *r6040_get_stats(struct net_device *dev) -{ - struct r6040_private *priv = netdev_priv(dev); - void __iomem *ioaddr = priv->base; - unsigned long flags; - - spin_lock_irqsave(&priv->lock, flags); - dev->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1); - dev->stats.multicast += ioread8(ioaddr + ME_CNT0); - spin_unlock_irqrestore(&priv->lock, flags); - - return &dev->stats; -} - -/* Stop RDC MAC and Free the allocated resource */ -static void r6040_down(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - int limit = 2048; - u16 *adrp; - u16 cmd; - - /* Stop MAC */ - iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */ - iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */ - while (limit--) { - cmd = ioread16(ioaddr + MCR1); - if (cmd & 0x1) - break; - } - - /* Restore MAC Address to MIDx */ - adrp = (u16 *) dev->dev_addr; - iowrite16(adrp[0], ioaddr + MID_0L); - iowrite16(adrp[1], ioaddr + MID_0M); - iowrite16(adrp[2], ioaddr + MID_0H); -} - -static int r6040_close(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - struct pci_dev *pdev = lp->pdev; - - spin_lock_irq(&lp->lock); - napi_disable(&lp->napi); - netif_stop_queue(dev); - r6040_down(dev); - - free_irq(dev->irq, dev); - - /* Free RX buffer */ - r6040_free_rxbufs(dev); - - /* Free TX buffer */ - r6040_free_txbufs(dev); - - spin_unlock_irq(&lp->lock); - - /* Free Descriptor memory */ - if (lp->rx_ring) { - pci_free_consistent(pdev, - RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma); - lp->rx_ring = NULL; - } - - if (lp->tx_ring) { - pci_free_consistent(pdev, - TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma); - lp->tx_ring = NULL; - } - - return 0; -} - -static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct r6040_private *lp = netdev_priv(dev); - - if (!lp->phydev) - return -EINVAL; - - return phy_mii_ioctl(lp->phydev, rq, cmd); -} - -static int r6040_rx(struct net_device *dev, int limit) -{ - struct r6040_private *priv = netdev_priv(dev); - struct r6040_descriptor *descptr = priv->rx_remove_ptr; - struct sk_buff *skb_ptr, *new_skb; - int count = 0; - u16 err; - - /* Limit not reached and the descriptor belongs to the CPU */ - while (count < limit && !(descptr->status & DSC_OWNER_MAC)) { - /* Read the descriptor status */ - err = descptr->status; - /* Global error status set */ - if (err & DSC_RX_ERR) { - /* RX dribble */ - if (err & DSC_RX_ERR_DRI) - dev->stats.rx_frame_errors++; - /* Buffer length exceeded */ - if (err & DSC_RX_ERR_BUF) - dev->stats.rx_length_errors++; - /* Packet too long */ - if (err & DSC_RX_ERR_LONG) - dev->stats.rx_length_errors++; - /* Packet < 64 bytes */ - if (err & DSC_RX_ERR_RUNT) - dev->stats.rx_length_errors++; - /* CRC error */ - if (err & DSC_RX_ERR_CRC) { - spin_lock(&priv->lock); - dev->stats.rx_crc_errors++; - spin_unlock(&priv->lock); - } - goto next_descr; - } - - /* Packet successfully received */ - new_skb = netdev_alloc_skb(dev, MAX_BUF_SIZE); - if (!new_skb) { - dev->stats.rx_dropped++; - goto next_descr; - } - skb_ptr = descptr->skb_ptr; - skb_ptr->dev = priv->dev; - - /* Do not count the CRC */ - skb_put(skb_ptr, descptr->len - 4); - pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf), - MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); - skb_ptr->protocol = eth_type_trans(skb_ptr, priv->dev); - - /* Send to upper layer */ - netif_receive_skb(skb_ptr); - dev->stats.rx_packets++; - dev->stats.rx_bytes += descptr->len - 4; - - /* put new skb into descriptor */ - descptr->skb_ptr = new_skb; - descptr->buf = cpu_to_le32(pci_map_single(priv->pdev, - descptr->skb_ptr->data, - MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); - -next_descr: - /* put the descriptor back to the MAC */ - descptr->status = DSC_OWNER_MAC; - descptr = descptr->vndescp; - count++; - } - priv->rx_remove_ptr = descptr; - - return count; -} - -static void r6040_tx(struct net_device *dev) -{ - struct r6040_private *priv = netdev_priv(dev); - struct r6040_descriptor *descptr; - void __iomem *ioaddr = priv->base; - struct sk_buff *skb_ptr; - u16 err; - - spin_lock(&priv->lock); - descptr = priv->tx_remove_ptr; - while (priv->tx_free_desc < TX_DCNT) { - /* Check for errors */ - err = ioread16(ioaddr + MLSR); - - if (err & 0x0200) - dev->stats.rx_fifo_errors++; - if (err & (0x2000 | 0x4000)) - dev->stats.tx_carrier_errors++; - - if (descptr->status & DSC_OWNER_MAC) - break; /* Not complete */ - skb_ptr = descptr->skb_ptr; - pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf), - skb_ptr->len, PCI_DMA_TODEVICE); - /* Free buffer */ - dev_kfree_skb_irq(skb_ptr); - descptr->skb_ptr = NULL; - /* To next descriptor */ - descptr = descptr->vndescp; - priv->tx_free_desc++; - } - priv->tx_remove_ptr = descptr; - - if (priv->tx_free_desc) - netif_wake_queue(dev); - spin_unlock(&priv->lock); -} - -static int r6040_poll(struct napi_struct *napi, int budget) -{ - struct r6040_private *priv = - container_of(napi, struct r6040_private, napi); - struct net_device *dev = priv->dev; - void __iomem *ioaddr = priv->base; - int work_done; - - work_done = r6040_rx(dev, budget); - - if (work_done < budget) { - napi_complete(napi); - /* Enable RX interrupt */ - iowrite16(ioread16(ioaddr + MIER) | RX_INTS, ioaddr + MIER); - } - return work_done; -} - -/* The RDC interrupt handler. */ -static irqreturn_t r6040_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - u16 misr, status; - - /* Save MIER */ - misr = ioread16(ioaddr + MIER); - /* Mask off RDC MAC interrupt */ - iowrite16(MSK_INT, ioaddr + MIER); - /* Read MISR status and clear */ - status = ioread16(ioaddr + MISR); - - if (status == 0x0000 || status == 0xffff) { - /* Restore RDC MAC interrupt */ - iowrite16(misr, ioaddr + MIER); - return IRQ_NONE; - } - - /* RX interrupt request */ - if (status & RX_INTS) { - if (status & RX_NO_DESC) { - /* RX descriptor unavailable */ - dev->stats.rx_dropped++; - dev->stats.rx_missed_errors++; - } - if (status & RX_FIFO_FULL) - dev->stats.rx_fifo_errors++; - - if (likely(napi_schedule_prep(&lp->napi))) { - /* Mask off RX interrupt */ - misr &= ~RX_INTS; - __napi_schedule(&lp->napi); - } - } - - /* TX interrupt request */ - if (status & TX_INTS) - r6040_tx(dev); - - /* Restore RDC MAC interrupt */ - iowrite16(misr, ioaddr + MIER); - - return IRQ_HANDLED; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void r6040_poll_controller(struct net_device *dev) -{ - disable_irq(dev->irq); - r6040_interrupt(dev->irq, dev); - enable_irq(dev->irq); -} -#endif - -/* Init RDC MAC */ -static int r6040_up(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - int ret; - - /* Initialise and alloc RX/TX buffers */ - r6040_init_txbufs(dev); - ret = r6040_alloc_rxbufs(dev); - if (ret) - return ret; - - /* improve performance (by RDC guys) */ - r6040_phy_write(ioaddr, 30, 17, - (r6040_phy_read(ioaddr, 30, 17) | 0x4000)); - r6040_phy_write(ioaddr, 30, 17, - ~((~r6040_phy_read(ioaddr, 30, 17)) | 0x2000)); - r6040_phy_write(ioaddr, 0, 19, 0x0000); - r6040_phy_write(ioaddr, 0, 30, 0x01F0); - - /* Initialize all MAC registers */ - r6040_init_mac_regs(dev); - - return 0; -} - - -/* Read/set MAC address routines */ -static void r6040_mac_address(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - u16 *adrp; - - /* MAC operation register */ - iowrite16(0x01, ioaddr + MCR1); /* Reset MAC */ - iowrite16(2, ioaddr + MAC_SM); /* Reset internal state machine */ - iowrite16(0, ioaddr + MAC_SM); - mdelay(5); - - /* Restore MAC Address */ - adrp = (u16 *) dev->dev_addr; - iowrite16(adrp[0], ioaddr + MID_0L); - iowrite16(adrp[1], ioaddr + MID_0M); - iowrite16(adrp[2], ioaddr + MID_0H); - - /* Store MAC Address in perm_addr */ - memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); -} - -static int r6040_open(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - int ret; - - /* Request IRQ and Register interrupt handler */ - ret = request_irq(dev->irq, r6040_interrupt, - IRQF_SHARED, dev->name, dev); - if (ret) - goto out; - - /* Set MAC address */ - r6040_mac_address(dev); - - /* Allocate Descriptor memory */ - lp->rx_ring = - pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma); - if (!lp->rx_ring) { - ret = -ENOMEM; - goto err_free_irq; - } - - lp->tx_ring = - pci_alloc_consistent(lp->pdev, TX_DESC_SIZE, &lp->tx_ring_dma); - if (!lp->tx_ring) { - ret = -ENOMEM; - goto err_free_rx_ring; - } - - ret = r6040_up(dev); - if (ret) - goto err_free_tx_ring; - - napi_enable(&lp->napi); - netif_start_queue(dev); - - return 0; - -err_free_tx_ring: - pci_free_consistent(lp->pdev, TX_DESC_SIZE, lp->tx_ring, - lp->tx_ring_dma); -err_free_rx_ring: - pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring, - lp->rx_ring_dma); -err_free_irq: - free_irq(dev->irq, dev); -out: - return ret; -} - -static netdev_tx_t r6040_start_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - struct r6040_descriptor *descptr; - void __iomem *ioaddr = lp->base; - unsigned long flags; - - /* Critical Section */ - spin_lock_irqsave(&lp->lock, flags); - - /* TX resource check */ - if (!lp->tx_free_desc) { - spin_unlock_irqrestore(&lp->lock, flags); - netif_stop_queue(dev); - netdev_err(dev, ": no tx descriptor\n"); - return NETDEV_TX_BUSY; - } - - /* Statistic Counter */ - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - /* Set TX descriptor & Transmit it */ - lp->tx_free_desc--; - descptr = lp->tx_insert_ptr; - if (skb->len < MISR) - descptr->len = MISR; - else - descptr->len = skb->len; - - descptr->skb_ptr = skb; - descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, - skb->data, skb->len, PCI_DMA_TODEVICE)); - descptr->status = DSC_OWNER_MAC; - - skb_tx_timestamp(skb); - - /* Trigger the MAC to check the TX descriptor */ - iowrite16(0x01, ioaddr + MTPR); - lp->tx_insert_ptr = descptr->vndescp; - - /* If no tx resource, stop */ - if (!lp->tx_free_desc) - netif_stop_queue(dev); - - spin_unlock_irqrestore(&lp->lock, flags); - - return NETDEV_TX_OK; -} - -static void r6040_multicast_list(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned long flags; - struct netdev_hw_addr *ha; - int i; - u16 *adrp; - u16 hash_table[4] = { 0 }; - - spin_lock_irqsave(&lp->lock, flags); - - /* Keep our MAC Address */ - adrp = (u16 *)dev->dev_addr; - iowrite16(adrp[0], ioaddr + MID_0L); - iowrite16(adrp[1], ioaddr + MID_0M); - iowrite16(adrp[2], ioaddr + MID_0H); - - /* Clear AMCP & PROM bits */ - lp->mcr0 = ioread16(ioaddr + MCR0) & ~(MCR0_PROMISC | MCR0_HASH_EN); - - /* Promiscuous mode */ - if (dev->flags & IFF_PROMISC) - lp->mcr0 |= MCR0_PROMISC; - - /* Enable multicast hash table function to - * receive all multicast packets. */ - else if (dev->flags & IFF_ALLMULTI) { - lp->mcr0 |= MCR0_HASH_EN; - - for (i = 0; i < MCAST_MAX ; i++) { - iowrite16(0, ioaddr + MID_1L + 8 * i); - iowrite16(0, ioaddr + MID_1M + 8 * i); - iowrite16(0, ioaddr + MID_1H + 8 * i); - } - - for (i = 0; i < 4; i++) - hash_table[i] = 0xffff; - } - /* Use internal multicast address registers if the number of - * multicast addresses is not greater than MCAST_MAX. */ - else if (netdev_mc_count(dev) <= MCAST_MAX) { - i = 0; - netdev_for_each_mc_addr(ha, dev) { - u16 *adrp = (u16 *) ha->addr; - iowrite16(adrp[0], ioaddr + MID_1L + 8 * i); - iowrite16(adrp[1], ioaddr + MID_1M + 8 * i); - iowrite16(adrp[2], ioaddr + MID_1H + 8 * i); - i++; - } - while (i < MCAST_MAX) { - iowrite16(0, ioaddr + MID_1L + 8 * i); - iowrite16(0, ioaddr + MID_1M + 8 * i); - iowrite16(0, ioaddr + MID_1H + 8 * i); - i++; - } - } - /* Otherwise, Enable multicast hash table function. */ - else { - u32 crc; - - lp->mcr0 |= MCR0_HASH_EN; - - for (i = 0; i < MCAST_MAX ; i++) { - iowrite16(0, ioaddr + MID_1L + 8 * i); - iowrite16(0, ioaddr + MID_1M + 8 * i); - iowrite16(0, ioaddr + MID_1H + 8 * i); - } - - /* Build multicast hash table */ - netdev_for_each_mc_addr(ha, dev) { - u8 *addrs = ha->addr; - - crc = ether_crc(ETH_ALEN, addrs); - crc >>= 26; - hash_table[crc >> 4] |= 1 << (crc & 0xf); - } - } - - iowrite16(lp->mcr0, ioaddr + MCR0); - - /* Fill the MAC hash tables with their values */ - if (lp->mcr0 && MCR0_HASH_EN) { - iowrite16(hash_table[0], ioaddr + MAR0); - iowrite16(hash_table[1], ioaddr + MAR1); - iowrite16(hash_table[2], ioaddr + MAR2); - iowrite16(hash_table[3], ioaddr + MAR3); - } - - spin_unlock_irqrestore(&lp->lock, flags); -} - -static void netdev_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *info) -{ - struct r6040_private *rp = netdev_priv(dev); - - strcpy(info->driver, DRV_NAME); - strcpy(info->version, DRV_VERSION); - strcpy(info->bus_info, pci_name(rp->pdev)); -} - -static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct r6040_private *rp = netdev_priv(dev); - - return phy_ethtool_gset(rp->phydev, cmd); -} - -static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct r6040_private *rp = netdev_priv(dev); - - return phy_ethtool_sset(rp->phydev, cmd); -} - -static const struct ethtool_ops netdev_ethtool_ops = { - .get_drvinfo = netdev_get_drvinfo, - .get_settings = netdev_get_settings, - .set_settings = netdev_set_settings, - .get_link = ethtool_op_get_link, -}; - -static const struct net_device_ops r6040_netdev_ops = { - .ndo_open = r6040_open, - .ndo_stop = r6040_close, - .ndo_start_xmit = r6040_start_xmit, - .ndo_get_stats = r6040_get_stats, - .ndo_set_multicast_list = r6040_multicast_list, - .ndo_change_mtu = eth_change_mtu, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, - .ndo_do_ioctl = r6040_ioctl, - .ndo_tx_timeout = r6040_tx_timeout, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = r6040_poll_controller, -#endif -}; - -static void r6040_adjust_link(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - struct phy_device *phydev = lp->phydev; - int status_changed = 0; - void __iomem *ioaddr = lp->base; - - BUG_ON(!phydev); - - if (lp->old_link != phydev->link) { - status_changed = 1; - lp->old_link = phydev->link; - } - - /* reflect duplex change */ - if (phydev->link && (lp->old_duplex != phydev->duplex)) { - lp->mcr0 |= (phydev->duplex == DUPLEX_FULL ? 0x8000 : 0); - iowrite16(lp->mcr0, ioaddr); - - status_changed = 1; - lp->old_duplex = phydev->duplex; - } - - if (status_changed) { - pr_info("%s: link %s", dev->name, phydev->link ? - "UP" : "DOWN"); - if (phydev->link) - pr_cont(" - %d/%s", phydev->speed, - DUPLEX_FULL == phydev->duplex ? "full" : "half"); - pr_cont("\n"); - } -} - -static int r6040_mii_probe(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - struct phy_device *phydev = NULL; - - phydev = phy_find_first(lp->mii_bus); - if (!phydev) { - dev_err(&lp->pdev->dev, "no PHY found\n"); - return -ENODEV; - } - - phydev = phy_connect(dev, dev_name(&phydev->dev), &r6040_adjust_link, - 0, PHY_INTERFACE_MODE_MII); - - if (IS_ERR(phydev)) { - dev_err(&lp->pdev->dev, "could not attach to PHY\n"); - return PTR_ERR(phydev); - } - - /* mask with MAC supported features */ - phydev->supported &= (SUPPORTED_10baseT_Half - | SUPPORTED_10baseT_Full - | SUPPORTED_100baseT_Half - | SUPPORTED_100baseT_Full - | SUPPORTED_Autoneg - | SUPPORTED_MII - | SUPPORTED_TP); - - phydev->advertising = phydev->supported; - lp->phydev = phydev; - lp->old_link = 0; - lp->old_duplex = -1; - - dev_info(&lp->pdev->dev, "attached PHY driver [%s] " - "(mii_bus:phy_addr=%s)\n", - phydev->drv->name, dev_name(&phydev->dev)); - - return 0; -} - -static int __devinit r6040_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *dev; - struct r6040_private *lp; - void __iomem *ioaddr; - int err, io_size = R6040_IO_SIZE; - static int card_idx = -1; - int bar = 0; - u16 *adrp; - int i; - - pr_info("%s\n", version); - - err = pci_enable_device(pdev); - if (err) - goto err_out; - - /* this should always be supported */ - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "32-bit PCI DMA addresses" - "not supported by the card\n"); - goto err_out; - } - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "32-bit PCI DMA addresses" - "not supported by the card\n"); - goto err_out; - } - - /* IO Size check */ - if (pci_resource_len(pdev, bar) < io_size) { - dev_err(&pdev->dev, "Insufficient PCI resources, aborting\n"); - err = -EIO; - goto err_out; - } - - pci_set_master(pdev); - - dev = alloc_etherdev(sizeof(struct r6040_private)); - if (!dev) { - dev_err(&pdev->dev, "Failed to allocate etherdev\n"); - err = -ENOMEM; - goto err_out; - } - SET_NETDEV_DEV(dev, &pdev->dev); - lp = netdev_priv(dev); - - err = pci_request_regions(pdev, DRV_NAME); - - if (err) { - dev_err(&pdev->dev, "Failed to request PCI regions\n"); - goto err_out_free_dev; - } - - ioaddr = pci_iomap(pdev, bar, io_size); - if (!ioaddr) { - dev_err(&pdev->dev, "ioremap failed for device\n"); - err = -EIO; - goto err_out_free_res; - } - /* If PHY status change register is still set to zero it means the - * bootloader didn't initialize it */ - if (ioread16(ioaddr + PHY_CC) == 0) - iowrite16(0x9f07, ioaddr + PHY_CC); - - /* Init system & device */ - lp->base = ioaddr; - dev->irq = pdev->irq; - - spin_lock_init(&lp->lock); - pci_set_drvdata(pdev, dev); - - /* Set MAC address */ - card_idx++; - - adrp = (u16 *)dev->dev_addr; - adrp[0] = ioread16(ioaddr + MID_0L); - adrp[1] = ioread16(ioaddr + MID_0M); - adrp[2] = ioread16(ioaddr + MID_0H); - - /* Some bootloader/BIOSes do not initialize - * MAC address, warn about that */ - if (!(adrp[0] || adrp[1] || adrp[2])) { - netdev_warn(dev, "MAC address not initialized, " - "generating random\n"); - random_ether_addr(dev->dev_addr); - } - - /* Link new device into r6040_root_dev */ - lp->pdev = pdev; - lp->dev = dev; - - /* Init RDC private data */ - lp->mcr0 = 0x1002; - lp->phy_addr = phy_table[card_idx]; - - /* The RDC-specific entries in the device structure. */ - dev->netdev_ops = &r6040_netdev_ops; - dev->ethtool_ops = &netdev_ethtool_ops; - dev->watchdog_timeo = TX_TIMEOUT; - - netif_napi_add(dev, &lp->napi, r6040_poll, 64); - - lp->mii_bus = mdiobus_alloc(); - if (!lp->mii_bus) { - dev_err(&pdev->dev, "mdiobus_alloc() failed\n"); - err = -ENOMEM; - goto err_out_unmap; - } - - lp->mii_bus->priv = dev; - lp->mii_bus->read = r6040_mdiobus_read; - lp->mii_bus->write = r6040_mdiobus_write; - lp->mii_bus->reset = r6040_mdiobus_reset; - lp->mii_bus->name = "r6040_eth_mii"; - snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x", card_idx); - lp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); - if (!lp->mii_bus->irq) { - dev_err(&pdev->dev, "mii_bus irq allocation failed\n"); - err = -ENOMEM; - goto err_out_mdio; - } - - for (i = 0; i < PHY_MAX_ADDR; i++) - lp->mii_bus->irq[i] = PHY_POLL; - - err = mdiobus_register(lp->mii_bus); - if (err) { - dev_err(&pdev->dev, "failed to register MII bus\n"); - goto err_out_mdio_irq; - } - - err = r6040_mii_probe(dev); - if (err) { - dev_err(&pdev->dev, "failed to probe MII bus\n"); - goto err_out_mdio_unregister; - } - - /* Register net device. After this dev->name assign */ - err = register_netdev(dev); - if (err) { - dev_err(&pdev->dev, "Failed to register net device\n"); - goto err_out_mdio_unregister; - } - return 0; - -err_out_mdio_unregister: - mdiobus_unregister(lp->mii_bus); -err_out_mdio_irq: - kfree(lp->mii_bus->irq); -err_out_mdio: - mdiobus_free(lp->mii_bus); -err_out_unmap: - pci_iounmap(pdev, ioaddr); -err_out_free_res: - pci_release_regions(pdev); -err_out_free_dev: - free_netdev(dev); -err_out: - return err; -} - -static void __devexit r6040_remove_one(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct r6040_private *lp = netdev_priv(dev); - - unregister_netdev(dev); - mdiobus_unregister(lp->mii_bus); - kfree(lp->mii_bus->irq); - mdiobus_free(lp->mii_bus); - pci_release_regions(pdev); - free_netdev(dev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); -} - - -static DEFINE_PCI_DEVICE_TABLE(r6040_pci_tbl) = { - { PCI_DEVICE(PCI_VENDOR_ID_RDC, 0x6040) }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, r6040_pci_tbl); - -static struct pci_driver r6040_driver = { - .name = DRV_NAME, - .id_table = r6040_pci_tbl, - .probe = r6040_init_one, - .remove = __devexit_p(r6040_remove_one), -}; - - -static int __init r6040_init(void) -{ - return pci_register_driver(&r6040_driver); -} - - -static void __exit r6040_cleanup(void) -{ - pci_unregister_driver(&r6040_driver); -} - -module_init(r6040_init); -module_exit(r6040_cleanup); -- cgit v1.2.3