diff options
Diffstat (limited to 'roms/ipxe/src/drivers/net/sundance.c')
| -rw-r--r-- | roms/ipxe/src/drivers/net/sundance.c | 899 |
1 files changed, 899 insertions, 0 deletions
diff --git a/roms/ipxe/src/drivers/net/sundance.c b/roms/ipxe/src/drivers/net/sundance.c new file mode 100644 index 00000000..eef7c9c7 --- /dev/null +++ b/roms/ipxe/src/drivers/net/sundance.c @@ -0,0 +1,899 @@ +/************************************************************************** +* +* sundance.c -- Etherboot device driver for the Sundance ST201 "Alta". +* Written 2002-2002 by Timothy Legge <tlegge@rogers.com> +* +* 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. +* +* Portions of this code based on: +* sundance.c: A Linux device driver for the Sundance ST201 "Alta" +* Written 1999-2002 by Donald Becker +* +* tulip.c: Tulip and Clone Etherboot Driver +* By Marty Conner +* Copyright (C) 2001 Entity Cyber, Inc. +* +* Linux Driver Version LK1.09a, 10-Jul-2003 (2.4.25) +* +* REVISION HISTORY: +* ================ +* v1.1 01-01-2003 timlegge Initial implementation +* v1.7 04-10-2003 timlegge Transfers Linux Kernel (30 sec) +* v1.8 04-13-2003 timlegge Fix multiple transmission bug +* v1.9 08-19-2003 timlegge Support Multicast +* v1.10 01-17-2004 timlegge Initial driver output cleanup +* v1.11 03-21-2004 timlegge Remove unused variables +* v1.12 03-21-2004 timlegge Remove excess MII defines +* v1.13 03-24-2004 timlegge Update to Linux 2.4.25 driver +* +****************************************************************************/ + +FILE_LICENCE ( GPL2_OR_LATER ); + +/* to get some global routines like printf */ +#include "etherboot.h" +/* to get the interface to the body of the program */ +#include "nic.h" +/* to get the PCI support functions, if this is a PCI NIC */ +#include <ipxe/pci.h> +#include "mii.h" + +#define drv_version "v1.12" +#define drv_date "2004-03-21" + +#define HZ 100 + +/* Condensed operations for readability. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +/* Set the mtu */ +static int mtu = 1514; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + The sundance uses a 64 element hash table based on the Ethernet CRC. */ +// static int multicast_filter_limit = 32; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. + This chip can receive into any byte alignment buffers, so word-oriented + archs do not need a copy-align of the IP header. */ +static int rx_copybreak = 0; +static int flowctrl = 1; + +/* Allow forcing the media type */ +/* media[] specifies the media type the NIC operates at. + autosense Autosensing active media. + 10mbps_hd 10Mbps half duplex. + 10mbps_fd 10Mbps full duplex. + 100mbps_hd 100Mbps half duplex. + 100mbps_fd 100Mbps full duplex. +*/ +static char media[] = "autosense"; + +/* Operational parameters that are set at compile time. */ + +/* As Etherboot uses a Polling driver we can keep the number of rings +to the minimum number required. In general that is 1 transmit and 4 receive receive rings. However some cards require that +there be a minimum of 2 rings */ +#define TX_RING_SIZE 2 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ +#define RX_RING_SIZE 4 + + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIME_OUT (4*HZ) +#define PKT_BUF_SZ 1536 + +/* Offsets to the device registers. + Unlike software-only systems, device drivers interact with complex hardware. + It's not useful to define symbolic names for every register bit in the + device. The name can only partially document the semantics and make + the driver longer and more difficult to read. + In general, only the important configuration values or bits changed + multiple times should be defined symbolically. +*/ +enum alta_offsets { + DMACtrl = 0x00, + TxListPtr = 0x04, + TxDMABurstThresh = 0x08, + TxDMAUrgentThresh = 0x09, + TxDMAPollPeriod = 0x0a, + RxDMAStatus = 0x0c, + RxListPtr = 0x10, + DebugCtrl0 = 0x1a, + DebugCtrl1 = 0x1c, + RxDMABurstThresh = 0x14, + RxDMAUrgentThresh = 0x15, + RxDMAPollPeriod = 0x16, + LEDCtrl = 0x1a, + ASICCtrl = 0x30, + EEData = 0x34, + EECtrl = 0x36, + TxStartThresh = 0x3c, + RxEarlyThresh = 0x3e, + FlashAddr = 0x40, + FlashData = 0x44, + TxStatus = 0x46, + TxFrameId = 0x47, + DownCounter = 0x18, + IntrClear = 0x4a, + IntrEnable = 0x4c, + IntrStatus = 0x4e, + MACCtrl0 = 0x50, + MACCtrl1 = 0x52, + StationAddr = 0x54, + MaxFrameSize = 0x5A, + RxMode = 0x5c, + MIICtrl = 0x5e, + MulticastFilter0 = 0x60, + MulticastFilter1 = 0x64, + RxOctetsLow = 0x68, + RxOctetsHigh = 0x6a, + TxOctetsLow = 0x6c, + TxOctetsHigh = 0x6e, + TxFramesOK = 0x70, + RxFramesOK = 0x72, + StatsCarrierError = 0x74, + StatsLateColl = 0x75, + StatsMultiColl = 0x76, + StatsOneColl = 0x77, + StatsTxDefer = 0x78, + RxMissed = 0x79, + StatsTxXSDefer = 0x7a, + StatsTxAbort = 0x7b, + StatsBcastTx = 0x7c, + StatsBcastRx = 0x7d, + StatsMcastTx = 0x7e, + StatsMcastRx = 0x7f, + /* Aliased and bogus values! */ + RxStatus = 0x0c, +}; +enum ASICCtrl_HiWord_bit { + GlobalReset = 0x0001, + RxReset = 0x0002, + TxReset = 0x0004, + DMAReset = 0x0008, + FIFOReset = 0x0010, + NetworkReset = 0x0020, + HostReset = 0x0040, + ResetBusy = 0x0400, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrSummary = 0x0001, IntrPCIErr = 0x0002, IntrMACCtrl = 0x0008, + IntrTxDone = 0x0004, IntrRxDone = 0x0010, IntrRxStart = 0x0020, + IntrDrvRqst = 0x0040, + StatsMax = 0x0080, LinkChange = 0x0100, + IntrTxDMADone = 0x0200, IntrRxDMADone = 0x0400, +}; + +/* Bits in the RxMode register. */ +enum rx_mode_bits { + AcceptAllIPMulti = 0x20, AcceptMultiHash = 0x10, AcceptAll = 0x08, + AcceptBroadcast = 0x04, AcceptMulticast = 0x02, AcceptMyPhys = + 0x01, +}; +/* Bits in MACCtrl. */ +enum mac_ctrl0_bits { + EnbFullDuplex = 0x20, EnbRcvLargeFrame = 0x40, + EnbFlowCtrl = 0x100, EnbPassRxCRC = 0x200, +}; +enum mac_ctrl1_bits { + StatsEnable = 0x0020, StatsDisable = 0x0040, StatsEnabled = 0x0080, + TxEnable = 0x0100, TxDisable = 0x0200, TxEnabled = 0x0400, + RxEnable = 0x0800, RxDisable = 0x1000, RxEnabled = 0x2000, +}; + +/* The Rx and Tx buffer descriptors. + Using only 32 bit fields simplifies software endian correction. + This structure must be aligned, and should avoid spanning cache lines. +*/ +struct netdev_desc { + u32 next_desc; + u32 status; + u32 addr; + u32 length; +}; + +/* Bits in netdev_desc.status */ +enum desc_status_bits { + DescOwn = 0x8000, + DescEndPacket = 0x4000, + DescEndRing = 0x2000, + LastFrag = 0x80000000, + DescIntrOnTx = 0x8000, + DescIntrOnDMADone = 0x80000000, + DisableAlign = 0x00000001, +}; + +/********************************************** +* Descriptor Ring and Buffer defination +***********************************************/ +/* Define the TX Descriptor */ +static struct netdev_desc tx_ring[TX_RING_SIZE]; + +/* Define the RX Descriptor */ +static struct netdev_desc rx_ring[RX_RING_SIZE]; + +/* Create a static buffer of size PKT_BUF_SZ for each RX and TX descriptor. + All descriptors point to a part of this buffer */ +struct { + unsigned char txb[PKT_BUF_SZ * TX_RING_SIZE]; + unsigned char rxb[RX_RING_SIZE * PKT_BUF_SZ]; +} rx_tx_buf __shared; +#define rxb rx_tx_buf.rxb +#define txb rx_tx_buf.txb + +/* FIXME: Move BASE to the private structure */ +static u32 BASE; +#define EEPROM_SIZE 128 + +enum pci_id_flags_bits { + PCI_USES_IO = 1, PCI_USES_MEM = 2, PCI_USES_MASTER = 4, + PCI_ADDR0 = 0 << 4, PCI_ADDR1 = 1 << 4, PCI_ADDR2 = + 2 << 4, PCI_ADDR3 = 3 << 4, +}; + +enum chip_capability_flags { CanHaveMII = 1, KendinPktDropBug = 2, }; +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0) + +#define MII_CNT 4 +static struct sundance_private { + const char *nic_name; + /* Frequently used values */ + + unsigned int cur_rx; /* Producer/consumer ring indices */ + unsigned int mtu; + + /* These values keep track of the tranceiver/media in use */ + unsigned int flowctrl:1; + unsigned int an_enable:1; + + unsigned int speed; + + /* MII tranceiver section */ + struct mii_if_info mii_if; + int mii_preamble_required; + unsigned char phys[MII_CNT]; + unsigned char pci_rev_id; +} sdx; + +static struct sundance_private *sdc; + +/* Station Address location within the EEPROM */ +#define EEPROM_SA_OFFSET 0x10 +#define DEFAULT_INTR (IntrRxDMADone | IntrPCIErr | \ + IntrDrvRqst | IntrTxDone | StatsMax | \ + LinkChange) + +static int eeprom_read(long ioaddr, int location); +static int mdio_read(struct nic *nic, int phy_id, unsigned int location); +static void mdio_write(struct nic *nic, int phy_id, unsigned int location, + int value); +static void set_rx_mode(struct nic *nic); + +static void check_duplex(struct nic *nic) +{ + int mii_lpa = mdio_read(nic, sdc->phys[0], MII_LPA); + int negotiated = mii_lpa & sdc->mii_if.advertising; + int duplex; + + /* Force media */ + if (!sdc->an_enable || mii_lpa == 0xffff) { + if (sdc->mii_if.full_duplex) + outw(inw(BASE + MACCtrl0) | EnbFullDuplex, + BASE + MACCtrl0); + return; + } + + /* Autonegotiation */ + duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; + if (sdc->mii_if.full_duplex != duplex) { + sdc->mii_if.full_duplex = duplex; + DBG ("%s: Setting %s-duplex based on MII #%d " + "negotiated capability %4.4x.\n", sdc->nic_name, + duplex ? "full" : "half", sdc->phys[0], + negotiated ); + outw(inw(BASE + MACCtrl0) | duplex ? 0x20 : 0, + BASE + MACCtrl0); + } +} + + +/************************************************************************** + * init_ring - setup the tx and rx descriptors + *************************************************************************/ +static void init_ring(struct nic *nic __unused) +{ + int i; + + sdc->cur_rx = 0; + + /* Initialize all the Rx descriptors */ + for (i = 0; i < RX_RING_SIZE; i++) { + rx_ring[i].next_desc = virt_to_le32desc(&rx_ring[i + 1]); + rx_ring[i].status = 0; + rx_ring[i].length = 0; + rx_ring[i].addr = 0; + } + + /* Mark the last entry as wrapping the ring */ + rx_ring[i - 1].next_desc = virt_to_le32desc(&rx_ring[0]); + + for (i = 0; i < RX_RING_SIZE; i++) { + rx_ring[i].addr = virt_to_le32desc(&rxb[i * PKT_BUF_SZ]); + rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ | LastFrag); + } + + /* We only use one transmit buffer, but two + * descriptors so transmit engines have somewhere + * to point should they feel the need */ + tx_ring[0].status = 0x00000000; + tx_ring[0].addr = virt_to_bus(&txb[0]); + tx_ring[0].next_desc = 0; /* virt_to_bus(&tx_ring[1]); */ + + /* This descriptor is never used */ + tx_ring[1].status = 0x00000000; + tx_ring[1].addr = 0; /*virt_to_bus(&txb[0]); */ + tx_ring[1].next_desc = 0; + + /* Mark the last entry as wrapping the ring, + * though this should never happen */ + tx_ring[1].length = cpu_to_le32(LastFrag | PKT_BUF_SZ); +} + +/************************************************************************** + * RESET - Reset Adapter + * ***********************************************************************/ +static void sundance_reset(struct nic *nic) +{ + int i; + + init_ring(nic); + + outl(virt_to_le32desc(&rx_ring[0]), BASE + RxListPtr); + /* The Tx List Pointer is written as packets are queued */ + + /* Initialize other registers. */ + /* __set_mac_addr(dev); */ + { + u16 addr16; + + addr16 = (nic->node_addr[0] | (nic->node_addr[1] << 8)); + outw(addr16, BASE + StationAddr); + addr16 = (nic->node_addr[2] | (nic->node_addr[3] << 8)); + outw(addr16, BASE + StationAddr + 2); + addr16 = (nic->node_addr[4] | (nic->node_addr[5] << 8)); + outw(addr16, BASE + StationAddr + 4); + } + + outw(sdc->mtu + 14, BASE + MaxFrameSize); + if (sdc->mtu > 2047) /* this will never happen with default options */ + outl(inl(BASE + ASICCtrl) | 0x0c, BASE + ASICCtrl); + + set_rx_mode(nic); + + outw(0, BASE + DownCounter); + /* Set the chip to poll every N*30nsec */ + outb(100, BASE + RxDMAPollPeriod); + + /* Fix DFE-580TX packet drop issue */ + if (sdc->pci_rev_id >= 0x14) + writeb(0x01, BASE + DebugCtrl1); + + outw(RxEnable | TxEnable, BASE + MACCtrl1); + + /* Construct a perfect filter frame with the mac address as first match + * and broadcast for all others */ + for (i = 0; i < 192; i++) + txb[i] = 0xFF; + + txb[0] = nic->node_addr[0]; + txb[1] = nic->node_addr[1]; + txb[2] = nic->node_addr[2]; + txb[3] = nic->node_addr[3]; + txb[4] = nic->node_addr[4]; + txb[5] = nic->node_addr[5]; + + DBG ( "%s: Done sundance_reset, status: Rx %hX Tx %hX " + "MAC Control %hX, %hX %hX\n", + sdc->nic_name, (int) inl(BASE + RxStatus), + (int) inw(BASE + TxStatus), (int) inl(BASE + MACCtrl0), + (int) inw(BASE + MACCtrl1), (int) inw(BASE + MACCtrl0) ); +} + +/************************************************************************** +IRQ - Wait for a frame +***************************************************************************/ +static void sundance_irq ( struct nic *nic, irq_action_t action ) { + unsigned int intr_status; + + switch ( action ) { + case DISABLE : + case ENABLE : + intr_status = inw(nic->ioaddr + IntrStatus); + intr_status = intr_status & ~DEFAULT_INTR; + if ( action == ENABLE ) + intr_status = intr_status | DEFAULT_INTR; + outw(intr_status, nic->ioaddr + IntrEnable); + break; + case FORCE : + outw(0x0200, BASE + ASICCtrl); + break; + } +} +/************************************************************************** +POLL - Wait for a frame +***************************************************************************/ +static int sundance_poll(struct nic *nic, int retrieve) +{ + /* return true if there's an ethernet packet ready to read */ + /* nic->packet should contain data on return */ + /* nic->packetlen should contain length of data */ + int entry = sdc->cur_rx % RX_RING_SIZE; + u32 frame_status = le32_to_cpu(rx_ring[entry].status); + int intr_status; + int pkt_len = 0; + + if (!(frame_status & DescOwn)) + return 0; + + /* There is a packet ready */ + if(!retrieve) + return 1; + + intr_status = inw(nic->ioaddr + IntrStatus); + outw(intr_status, nic->ioaddr + IntrStatus); + + pkt_len = frame_status & 0x1fff; + + if (frame_status & 0x001f4000) { + DBG ( "Polling frame_status error\n" ); /* Do we really care about this */ + } else { + if (pkt_len < rx_copybreak) { + /* FIXME: What should happen Will this ever occur */ + printf("Poll Error: pkt_len < rx_copybreak"); + } else { + nic->packetlen = pkt_len; + memcpy(nic->packet, rxb + + (sdc->cur_rx * PKT_BUF_SZ), nic->packetlen); + + } + } + rx_ring[entry].length = cpu_to_le32(PKT_BUF_SZ | LastFrag); + rx_ring[entry].status = 0; + entry++; + sdc->cur_rx = entry % RX_RING_SIZE; + outw(DEFAULT_INTR & ~(IntrRxDone|IntrRxDMADone), + nic->ioaddr + IntrStatus); + return 1; +} + +/************************************************************************** +TRANSMIT - Transmit a frame +***************************************************************************/ +static void sundance_transmit(struct nic *nic, const char *d, /* Destination */ + unsigned int t, /* Type */ + unsigned int s, /* size */ + const char *p) +{ /* Packet */ + u16 nstype; + u32 to; + + /* Disable the Tx */ + outw(TxDisable, BASE + MACCtrl1); + + memcpy(txb, d, ETH_ALEN); + memcpy(txb + ETH_ALEN, nic->node_addr, ETH_ALEN); + nstype = htons((u16) t); + memcpy(txb + 2 * ETH_ALEN, (u8 *) & nstype, 2); + memcpy(txb + ETH_HLEN, p, s); + + s += ETH_HLEN; + s &= 0x0FFF; + while (s < ETH_ZLEN) + txb[s++] = '\0'; + + /* Setup the transmit descriptor */ + tx_ring[0].length = cpu_to_le32(s | LastFrag); + tx_ring[0].status = cpu_to_le32(0x00000001); + + /* Point to transmit descriptor */ + outl(virt_to_le32desc(&tx_ring[0]), BASE + TxListPtr); + + /* Enable Tx */ + outw(TxEnable, BASE + MACCtrl1); + /* Trigger an immediate send */ + outw(0, BASE + TxStatus); + + to = currticks() + TX_TIME_OUT; + while (!(tx_ring[0].status & 0x00010000) && (currticks() < to)); /* wait */ + + if (currticks() >= to) { + printf("TX Time Out"); + } + /* Disable Tx */ + outw(TxDisable, BASE + MACCtrl1); + +} + +/************************************************************************** +DISABLE - Turn off ethernet interface +***************************************************************************/ +static void sundance_disable ( struct nic *nic __unused ) { + /* put the card in its initial state */ + /* This function serves 3 purposes. + * This disables DMA and interrupts so we don't receive + * unexpected packets or interrupts from the card after + * etherboot has finished. + * This frees resources so etherboot may use + * this driver on another interface + * This allows etherboot to reinitialize the interface + * if something is something goes wrong. + */ + outw(0x0000, BASE + IntrEnable); + /* Stop the Chipchips Tx and Rx Status */ + outw(TxDisable | RxDisable | StatsDisable, BASE + MACCtrl1); +} + +static struct nic_operations sundance_operations = { + .connect = dummy_connect, + .poll = sundance_poll, + .transmit = sundance_transmit, + .irq = sundance_irq, + +}; + +/************************************************************************** +PROBE - Look for an adapter, this routine's visible to the outside +***************************************************************************/ +static int sundance_probe ( struct nic *nic, struct pci_device *pci ) { + + u8 ee_data[EEPROM_SIZE]; + u16 mii_ctl; + int i; + int speed; + + if (pci->ioaddr == 0) + return 0; + + /* BASE is used throughout to address the card */ + BASE = pci->ioaddr; + printf(" sundance.c: Found %s Vendor=0x%hX Device=0x%hX\n", + pci->id->name, pci->vendor, pci->device); + + /* Get the MAC Address by reading the EEPROM */ + for (i = 0; i < 3; i++) { + ((u16 *) ee_data)[i] = + le16_to_cpu(eeprom_read(BASE, i + EEPROM_SA_OFFSET)); + } + /* Update the nic structure with the MAC Address */ + for (i = 0; i < ETH_ALEN; i++) { + nic->node_addr[i] = ee_data[i]; + } + + /* Set the card as PCI Bus Master */ + adjust_pci_device(pci); + +// sdc->mii_if.dev = pci; +// sdc->mii_if.phy_id_mask = 0x1f; +// sdc->mii_if.reg_num_mask = 0x1f; + + /* point to private storage */ + sdc = &sdx; + + sdc->nic_name = pci->id->name; + sdc->mtu = mtu; + + pci_read_config_byte(pci, PCI_REVISION_ID, &sdc->pci_rev_id); + + DBG ( "Device revision id: %hx\n", sdc->pci_rev_id ); + + /* Print out some hardware info */ + DBG ( "%s: %s at ioaddr %hX, ", + pci->id->name, nic->node_addr, (unsigned int) BASE); + + sdc->mii_preamble_required = 0; + if (1) { + int phy, phy_idx = 0; + sdc->phys[0] = 1; /* Default Setting */ + sdc->mii_preamble_required++; + for (phy = 1; phy < 32 && phy_idx < MII_CNT; phy++) { + int mii_status = mdio_read(nic, phy, MII_BMSR); + if (mii_status != 0xffff && mii_status != 0x0000) { + sdc->phys[phy_idx++] = phy; + sdc->mii_if.advertising = + mdio_read(nic, phy, MII_ADVERTISE); + if ((mii_status & 0x0040) == 0) + sdc->mii_preamble_required++; + DBG + ( "%s: MII PHY found at address %d, status " "%hX advertising %hX\n", sdc->nic_name, phy, mii_status, sdc->mii_if.advertising ); + } + } + sdc->mii_preamble_required--; + if (phy_idx == 0) + printf("%s: No MII transceiver found!\n", + sdc->nic_name); + sdc->mii_if.phy_id = sdc->phys[0]; + } + + /* Parse override configuration */ + sdc->an_enable = 1; + if (strcasecmp(media, "autosense") != 0) { + sdc->an_enable = 0; + if (strcasecmp(media, "100mbps_fd") == 0 || + strcasecmp(media, "4") == 0) { + sdc->speed = 100; + sdc->mii_if.full_duplex = 1; + } else if (strcasecmp(media, "100mbps_hd") == 0 + || strcasecmp(media, "3") == 0) { + sdc->speed = 100; + sdc->mii_if.full_duplex = 0; + } else if (strcasecmp(media, "10mbps_fd") == 0 || + strcasecmp(media, "2") == 0) { + sdc->speed = 10; + sdc->mii_if.full_duplex = 1; + } else if (strcasecmp(media, "10mbps_hd") == 0 || + strcasecmp(media, "1") == 0) { + sdc->speed = 10; + sdc->mii_if.full_duplex = 0; + } else { + sdc->an_enable = 1; + } + } + if (flowctrl == 1) + sdc->flowctrl = 1; + + /* Fibre PHY? */ + if (inl(BASE + ASICCtrl) & 0x80) { + /* Default 100Mbps Full */ + if (sdc->an_enable) { + sdc->speed = 100; + sdc->mii_if.full_duplex = 1; + sdc->an_enable = 0; + } + } + + /* The Linux driver uses flow control and resets the link here. This means the + mii section from above would need to be re done I believe. Since it serves + no real purpose leave it out. */ + + /* Force media type */ + if (!sdc->an_enable) { + mii_ctl = 0; + mii_ctl |= (sdc->speed == 100) ? BMCR_SPEED100 : 0; + mii_ctl |= (sdc->mii_if.full_duplex) ? BMCR_FULLDPLX : 0; + mdio_write(nic, sdc->phys[0], MII_BMCR, mii_ctl); + printf("Override speed=%d, %s duplex\n", + sdc->speed, + sdc->mii_if.full_duplex ? "Full" : "Half"); + } + + /* Reset the chip to erase previous misconfiguration */ + DBG ( "ASIC Control is %#x\n", inl(BASE + ASICCtrl) ); + outw(0x007f, BASE + ASICCtrl + 2); + + /* + * wait for reset to complete + * this is heavily inspired by the linux sundance driver + * according to the linux driver it can take up to 1ms for the reset + * to complete + */ + i = 0; + while(inl(BASE + ASICCtrl) & (ResetBusy << 16)) { + if(i++ >= 10) { + DBG("sundance: NIC reset did not complete.\n"); + break; + } + udelay(100); + } + + DBG ( "ASIC Control is now %#x.\n", inl(BASE + ASICCtrl) ); + + sundance_reset(nic); + if (sdc->an_enable) { + u16 mii_advertise, mii_lpa; + mii_advertise = + mdio_read(nic, sdc->phys[0], MII_ADVERTISE); + mii_lpa = mdio_read(nic, sdc->phys[0], MII_LPA); + mii_advertise &= mii_lpa; + if (mii_advertise & ADVERTISE_100FULL) + sdc->speed = 100; + else if (mii_advertise & ADVERTISE_100HALF) + sdc->speed = 100; + else if (mii_advertise & ADVERTISE_10FULL) + sdc->speed = 10; + else if (mii_advertise & ADVERTISE_10HALF) + sdc->speed = 10; + } else { + mii_ctl = mdio_read(nic, sdc->phys[0], MII_BMCR); + speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10; + sdc->speed = speed; + printf("%s: Link changed: %dMbps ,", sdc->nic_name, speed); + printf("%s duplex.\n", (mii_ctl & BMCR_FULLDPLX) ? + "full" : "half"); + } + check_duplex(nic); + if (sdc->flowctrl && sdc->mii_if.full_duplex) { + outw(inw(BASE + MulticastFilter1 + 2) | 0x0200, + BASE + MulticastFilter1 + 2); + outw(inw(BASE + MACCtrl0) | EnbFlowCtrl, BASE + MACCtrl0); + } + printf("%dMbps, %s-Duplex\n", sdc->speed, + sdc->mii_if.full_duplex ? "Full" : "Half"); + + /* point to NIC specific routines */ + nic->nic_op = &sundance_operations; + + nic->irqno = pci->irq; + nic->ioaddr = BASE; + + return 1; +} + + +/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */ +static int eeprom_read(long ioaddr, int location) +{ + int boguscnt = 10000; /* Typical 1900 ticks */ + outw(0x0200 | (location & 0xff), ioaddr + EECtrl); + do { + if (!(inw(ioaddr + EECtrl) & 0x8000)) { + return inw(ioaddr + EEData); + } + } + while (--boguscnt > 0); + return 0; +} + +/* MII transceiver control section. + Read and write the MII registers using software-generated serial + MDIO protocol. See the MII specifications or DP83840A data sheet + for details. + + The maximum data clock rate is 2.5 Mhz. + The timing is decoupled from the processor clock by flushing the write + from the CPU write buffer with a following read, and using PCI + transaction time. */ + +#define mdio_in(mdio_addr) inb(mdio_addr) +#define mdio_out(value, mdio_addr) outb(value, mdio_addr) +#define mdio_delay(mdio_addr) inb(mdio_addr) + +enum mii_reg_bits { + MDIO_ShiftClk = 0x0001, MDIO_Data = 0x0002, MDIO_EnbOutput = + 0x0004, +}; +#define MDIO_EnbIn (0) +#define MDIO_WRITE0 (MDIO_EnbOutput) +#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput) + +/* Generate the preamble required for initial synchronization and + a few older transceivers. */ +static void mdio_sync(long mdio_addr) +{ + int bits = 32; + + /* Establish sync by sending at least 32 logic ones. */ + while (--bits >= 0) { + mdio_out(MDIO_WRITE1, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } +} + +static int +mdio_read(struct nic *nic __unused, int phy_id, unsigned int location) +{ + long mdio_addr = BASE + MIICtrl; + int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; + int i, retval = 0; + + if (sdc->mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the read command bits out. */ + for (i = 15; i >= 0; i--) { + int dataval = + (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Read the two transition, 16 data, and wire-idle bits. */ + for (i = 19; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + retval = (retval << 1) | ((mdio_in(mdio_addr) & MDIO_Data) + ? 1 : 0); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return (retval >> 1) & 0xffff; +} + +static void +mdio_write(struct nic *nic __unused, int phy_id, + unsigned int location, int value) +{ + long mdio_addr = BASE + MIICtrl; + int mii_cmd = + (0x5002 << 16) | (phy_id << 23) | (location << 18) | value; + int i; + + if (sdc->mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the command bits out. */ + for (i = 31; i >= 0; i--) { + int dataval = + (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Clear out extra bits. */ + for (i = 2; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return; +} + +static void set_rx_mode(struct nic *nic __unused) +{ + int i; + u16 mc_filter[4]; /* Multicast hash filter */ + u32 rx_mode; + + memset(mc_filter, 0xff, sizeof(mc_filter)); + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + + if (sdc->mii_if.full_duplex && sdc->flowctrl) + mc_filter[3] |= 0x0200; + for (i = 0; i < 4; i++) + outw(mc_filter[i], BASE + MulticastFilter0 + i * 2); + outb(rx_mode, BASE + RxMode); + return; +} + +static struct pci_device_id sundance_nics[] = { + PCI_ROM(0x13f0, 0x0201, "sundance", "ST201 Sundance 'Alta' based Adaptor", 0), + PCI_ROM(0x1186, 0x1002, "dfe530txs", "D-Link DFE530TXS (Sundance ST201 Alta)", 0), + PCI_ROM(0x13f0, 0x0200, "ip100a", "IC+ IP100A", 0), +}; + +PCI_DRIVER ( sundance_driver, sundance_nics, PCI_NO_CLASS ); + +DRIVER ( "SUNDANCE/PCI", nic_driver, pci_driver, sundance_driver, + sundance_probe, sundance_disable ); + +/* + * Local variables: + * c-basic-offset: 8 + * c-indent-level: 8 + * tab-width: 8 + * End: + */ |