diff options
Diffstat (limited to 'gpxe/src/drivers/net/3c90x.c')
| -rw-r--r-- | gpxe/src/drivers/net/3c90x.c | 994 |
1 files changed, 0 insertions, 994 deletions
diff --git a/gpxe/src/drivers/net/3c90x.c b/gpxe/src/drivers/net/3c90x.c deleted file mode 100644 index 9c1879bb..00000000 --- a/gpxe/src/drivers/net/3c90x.c +++ /dev/null @@ -1,994 +0,0 @@ -/* - * 3c90x.c -- This file implements a gPXE API 3c90x driver - * - * Originally written for etherboot by: - * Greg Beeley, Greg.Beeley@LightSys.org - * Modified by Steve Smith, - * Steve.Smith@Juno.Com. Alignment bug fix Neil Newell (nn@icenoir.net). - * Almost totally Rewritten to use gPXE API, implementation of tx/rx ring support - * by Thomas Miletich, thomas.miletich@gmail.com - * Thanks to Marty Connor and Stefan Hajnoczi for their help and feedback, - * and to Daniel Verkamp for his help with testing. - * - * Copyright (c) 2009 Thomas Miletich - * - * Copyright (c) 1999 LightSys Technology Services, Inc. - * Portions Copyright (c) 1999 Steve Smith - * - * This program may be re-distributed in source or binary form, modified, - * sold, or copied for any purpose, provided that the above copyright message - * and this text are included with all source copies or derivative works, and - * provided that the above copyright message and this text are included in the - * documentation of any binary-only distributions. This program is distributed - * WITHOUT ANY WARRANTY, without even the warranty of FITNESS FOR A PARTICULAR - * PURPOSE or MERCHANTABILITY. Please read the associated documentation - * "3c90x.txt" before compiling and using this driver. - * - * [ --mdc 20090313 The 3c90x.txt file is now at: - * http://etherboot.org/wiki/appnotes/3c90x_issues ] - * - * This program was written with the assistance of the 3com documentation for - * the 3c905B-TX card, as well as with some assistance from the 3c59x - * driver Donald Becker wrote for the Linux kernel, and with some assistance - * from the remainder of the Etherboot distribution. - * - * Indented with unix 'indent' command: - * $ indent -kr -i8 3c90x.c - */ - -FILE_LICENCE ( BSD2 ); - -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <string.h> -#include <unistd.h> -#include <assert.h> -#include <byteswap.h> -#include <errno.h> -#include <gpxe/ethernet.h> -#include <gpxe/if_ether.h> -#include <gpxe/io.h> -#include <gpxe/iobuf.h> -#include <gpxe/malloc.h> -#include <gpxe/netdevice.h> -#include <gpxe/pci.h> -#include <gpxe/timer.h> -#include <gpxe/nvs.h> - -#include "3c90x.h" - -/** - * a3c90x_internal_IssueCommand: sends a command to the 3c90x card - * and waits for it's completion - * - * @v ioaddr IOAddress of the NIC - * @v cmd Command to be issued - * @v param Command parameter - */ -static void a3c90x_internal_IssueCommand(int ioaddr, int cmd, int param) -{ - unsigned int val = (cmd << 11) | param; - int cnt = 0; - - DBGP("a3c90x_internal_IssueCommand\n"); - - /* Send the cmd to the cmd register */ - outw(val, ioaddr + regCommandIntStatus_w); - - /* Wait for the cmd to complete */ - for (cnt = 0; cnt < 100000; cnt++) { - if (inw(ioaddr + regCommandIntStatus_w) & INT_CMDINPROGRESS) { - continue; - } else { - DBG2("Command 0x%04X finished in time. cnt = %d.\n", cmd, cnt); - return; - } - } - - DBG("Command 0x%04X DID NOT finish in time. cnt = %d.\n", cmd, cnt); -} - -/** - * a3c90x_internal_SetWindow: selects a register window set. - * - * @v inf_3c90x private NIC data - * @v window window to be selected - */ -static void a3c90x_internal_SetWindow(struct INF_3C90X *inf_3c90x, int window) -{ - DBGP("a3c90x_internal_SetWindow\n"); - /* Window already as set? */ - if (inf_3c90x->CurrentWindow == window) - return; - - /* Issue the window command. */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdSelectRegisterWindow, window); - inf_3c90x->CurrentWindow = window; - - return; -} - -static void a3c90x_internal_WaitForEeprom(struct INF_3C90X *inf_3c90x) -{ - int cnt = 0; - - DBGP("a3c90x_internal_WaitForEeprom\n"); - - while (eepromBusy & inw(inf_3c90x->IOAddr + regEepromCommand_0_w)) { - if (cnt == EEPROM_TIMEOUT) { - DBG("Read from eeprom failed: timeout\n"); - return; - } - udelay(1); - cnt++; - } -} - -/** - * a3c90x_internal_ReadEeprom - nvs routine to read eeprom data - * We only support reading one word(2 byte). The nvs subsystem will make sure - * that the routine will never be called with len != 2. - * - * @v nvs nvs data. - * @v address eeprom address to read data from. - * @v data data is put here. - * @v len number of bytes to read. - */ -static int -a3c90x_internal_ReadEeprom(struct nvs_device *nvs, unsigned int address, void *data, size_t len) -{ - unsigned short *dest = (unsigned short *) data; - struct INF_3C90X *inf_3c90x = - container_of(nvs, struct INF_3C90X, nvs); - - DBGP("a3c90x_internal_ReadEeprom\n"); - - /* we support reading 2 bytes only */ - assert(len == 2); - - /* Select correct window */ - a3c90x_internal_SetWindow(inf_3c90x, winEepromBios0); - - /* set eepromRead bits in command sent to NIC */ - address += (inf_3c90x->is3c556 ? eepromRead_556 : eepromRead); - - a3c90x_internal_WaitForEeprom(inf_3c90x); - /* send address to NIC */ - outw(address, inf_3c90x->IOAddr + regEepromCommand_0_w); - a3c90x_internal_WaitForEeprom(inf_3c90x); - - /* read value */ - *dest = inw(inf_3c90x->IOAddr + regEepromData_0_w); - - return 0; -} - -/** - * a3c90x_internal_WriteEeprom - nvs routine to write eeprom data - * currently not implemented - * - * @v nvs nvs data. - * @v address eeprom address to read data from. - * @v data data is put here. - * @v len number of bytes to read. - */ -static int -a3c90x_internal_WriteEeprom(struct nvs_device *nvs __unused, - unsigned int address __unused, - const void *data __unused, size_t len __unused) -{ - return -ENOTSUP; -} - -static void a3c90x_internal_ReadEepromContents(struct INF_3C90X *inf_3c90x) -{ - int eeprom_size = (inf_3c90x->isBrev ? 0x20 : 0x17) * 2; - - DBGP("a3c90x_internal_ReadEepromContents\n"); - - nvs_read(&inf_3c90x->nvs, 0, inf_3c90x->eeprom, eeprom_size); -} - -/** - * a3c90x_reset: exported function that resets the card to its default - * state. This is so the Linux driver can re-set the card up the way - * it wants to. If CFG_3C90X_PRESERVE_XCVR is defined, then the reset will - * not alter the selected transceiver that we used to download the boot - * image. - * - * @v inf_3c90x Private NIC data - */ -static void a3c90x_reset(struct INF_3C90X *inf_3c90x) -{ - DBGP("a3c90x_reset\n"); - /* Send the reset command to the card */ - DBG("3c90x: Issuing RESET\n"); - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdGlobalReset, 0); - - /* global reset command resets station mask, non-B revision cards - * require explicit reset of values - */ - a3c90x_internal_SetWindow(inf_3c90x, winAddressing2); - outw(0, inf_3c90x->IOAddr + regStationMask_2_3w + 0); - outw(0, inf_3c90x->IOAddr + regStationMask_2_3w + 2); - outw(0, inf_3c90x->IOAddr + regStationMask_2_3w + 4); - - /* Issue transmit reset, wait for command completion */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdTxReset, 0); - - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdTxEnable, 0); - - /* - * reset of the receiver on B-revision cards re-negotiates the link - * takes several seconds (a computer eternity) - */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdRxReset, - inf_3c90x->isBrev ? 0x04 : 0x00); - - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdRxEnable, 0); - - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdSetInterruptEnable, 0); - /* enable rxComplete and txComplete */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdSetIndicationEnable, - INT_TXCOMPLETE | INT_UPCOMPLETE); - /* acknowledge any pending status flags */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdAcknowledgeInterrupt, 0x661); - - return; -} - -/** - * a3c90x_setup_tx_ring - Allocates TX ring, initialize tx_desc values - * - * @v p Private NIC data - * - * @ret Returns 0 on success, negative on failure - */ -static int a3c90x_setup_tx_ring(struct INF_3C90X *p) -{ - DBGP("a3c90x_setup_tx_ring\n"); - p->tx_ring = - malloc_dma(TX_RING_SIZE * sizeof(struct TXD), TX_RING_ALIGN); - - if (!p->tx_ring) { - DBG("Could not allocate TX-ring\n"); - return -ENOMEM; - } - - memset(p->tx_ring, 0, TX_RING_SIZE * sizeof(struct TXD)); - p->tx_cur = 0; - p->tx_cnt = 0; - p->tx_tail = 0; - - return 0; -} - -/** - * a3c90x_process_tx_packets - Checks for successfully sent packets, - * reports them to gPXE with netdev_tx_complete(); - * - * @v netdev Network device info - */ -static void a3c90x_process_tx_packets(struct net_device *netdev) -{ - struct INF_3C90X *p = netdev_priv(netdev); - unsigned int downlist_ptr; - - DBGP("a3c90x_process_tx_packets\n"); - - DBG(" tx_cnt: %d\n", p->tx_cnt); - - while (p->tx_tail != p->tx_cur) { - - downlist_ptr = inl(p->IOAddr + regDnListPtr_l); - - DBG(" downlist_ptr: %#08x\n", downlist_ptr); - DBG(" tx_tail: %d tx_cur: %d\n", p->tx_tail, p->tx_cur); - - /* NIC is currently working on this tx desc */ - if(downlist_ptr == virt_to_bus(p->tx_ring + p->tx_tail)) - return; - - netdev_tx_complete(netdev, p->tx_iobuf[p->tx_tail]); - - DBG("transmitted packet\n"); - DBG(" size: %zd\n", iob_len(p->tx_iobuf[p->tx_tail])); - - p->tx_tail = (p->tx_tail + 1) % TX_RING_SIZE; - p->tx_cnt--; - } -} - -static void a3c90x_free_tx_ring(struct INF_3C90X *p) -{ - DBGP("a3c90x_free_tx_ring\n"); - - free_dma(p->tx_ring, TX_RING_SIZE * sizeof(struct TXD)); - p->tx_ring = NULL; - /* io_buffers are free()ed by netdev_tx_complete[,_err]() */ -} - -/** - * a3c90x_transmit - Transmits a packet. - * - * @v netdev Network device info - * @v iob io_buffer containing the data to be send - * - * @ret Returns 0 on success, negative on failure - */ -static int a3c90x_transmit(struct net_device *netdev, - struct io_buffer *iob) -{ - struct INF_3C90X *inf_3c90x = netdev_priv(netdev); - struct TXD *tx_cur_desc; - struct TXD *tx_prev_desc; - - unsigned int len; - unsigned int downlist_ptr; - - DBGP("a3c90x_transmit\n"); - - if (inf_3c90x->tx_cnt == TX_RING_SIZE) { - DBG("TX-Ring overflow\n"); - return -ENOBUFS; - } - - inf_3c90x->tx_iobuf[inf_3c90x->tx_cur] = iob; - tx_cur_desc = inf_3c90x->tx_ring + inf_3c90x->tx_cur; - - tx_prev_desc = inf_3c90x->tx_ring + - (((inf_3c90x->tx_cur + TX_RING_SIZE) - 1) % TX_RING_SIZE); - - len = iob_len(iob); - - /* Setup the DPD (download descriptor) */ - tx_cur_desc->DnNextPtr = 0; - - /* FrameStartHeader differs in 90x and >= 90xB - * It contains length in 90x and a round up boundary and packet ID for - * 90xB and 90xC. We can leave this to 0 for 90xB and 90xC. - */ - tx_cur_desc->FrameStartHeader = - fshTxIndicate | (inf_3c90x->isBrev ? 0x00 : len); - - tx_cur_desc->DataAddr = virt_to_bus(iob->data); - tx_cur_desc->DataLength = len | downLastFrag; - - /* We have to stall the download engine, so the NIC won't access the - * tx descriptor while we modify it. There is a way around this - * from revision B and upwards. To stay compatible with older revisions - * we don't use it here. - */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdStallCtl, - dnStall); - - tx_prev_desc->DnNextPtr = virt_to_bus(tx_cur_desc); - - downlist_ptr = inl(inf_3c90x->IOAddr + regDnListPtr_l); - if (downlist_ptr == 0) { - /* currently no DownList, sending a new one */ - outl(virt_to_bus(tx_cur_desc), - inf_3c90x->IOAddr + regDnListPtr_l); - } - - /* End Stall */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdStallCtl, - dnUnStall); - - inf_3c90x->tx_cur = (inf_3c90x->tx_cur + 1) % TX_RING_SIZE; - inf_3c90x->tx_cnt++; - - return 0; -} - -/** - * a3c90x_prepare_rx_desc - fills the rx desc with initial data - * - * @v p NIC private data - * @v index Index for rx_iobuf and rx_ring array - */ - -static void a3c90x_prepare_rx_desc(struct INF_3C90X *p, unsigned int index) -{ - DBGP("a3c90x_prepare_rx_desc\n"); - DBG("Populating rx_desc %d\n", index); - - /* We have to stall the upload engine, so the NIC won't access the - * rx descriptor while we modify it. There is a way around this - * from revision B and upwards. To stay compatible with older revisions - * we don't use it here. - */ - a3c90x_internal_IssueCommand(p->IOAddr, cmdStallCtl, upStall); - - p->rx_ring[index].DataAddr = virt_to_bus(p->rx_iobuf[index]->data); - p->rx_ring[index].DataLength = RX_BUF_SIZE | upLastFrag; - p->rx_ring[index].UpPktStatus = 0; - - /* unstall upload engine */ - a3c90x_internal_IssueCommand(p->IOAddr, cmdStallCtl, upUnStall); -} - -/** - * a3c90x_refill_rx_ring -checks every entry in the rx ring and reallocates - * them as necessary. Then it calls a3c90x_prepare_rx_desc to fill the rx desc - * with initial data. - * - * @v p NIC private data - */ -static void a3c90x_refill_rx_ring(struct INF_3C90X *p) -{ - int i; - unsigned int status; - struct RXD *rx_cur_desc; - - DBGP("a3c90x_refill_rx_ring\n"); - - for (i = 0; i < RX_RING_SIZE; i++) { - rx_cur_desc = p->rx_ring + i; - status = rx_cur_desc->UpPktStatus; - - /* only refill used descriptor */ - if (!(status & upComplete)) - continue; - - /* we still need to process this descriptor */ - if (p->rx_iobuf[i] != NULL) - continue; - - p->rx_iobuf[i] = alloc_iob(RX_BUF_SIZE); - if (p->rx_iobuf[i] == NULL) { - DBG("alloc_iob() failed\n"); - break; - } - - a3c90x_prepare_rx_desc(p, i); - } -} - -/** - * a3c90x_setup_rx_ring - Allocates RX ring, initialize rx_desc values - * - * @v p Private NIC data - * - * @ret Returns 0 on success, negative on failure - */ -static int a3c90x_setup_rx_ring(struct INF_3C90X *p) -{ - int i; - - DBGP("a3c90x_setup_rx_ring\n"); - - p->rx_ring = - malloc_dma(RX_RING_SIZE * sizeof(struct RXD), RX_RING_ALIGN); - - if (!p->rx_ring) { - DBG("Could not allocate RX-ring\n"); - return -ENOMEM; - } - - p->rx_cur = 0; - - for (i = 0; i < RX_RING_SIZE; i++) { - p->rx_ring[i].UpNextPtr = - virt_to_bus(p->rx_ring + (i + 1)); - - /* these are needed so refill_rx_ring initializes the ring */ - p->rx_ring[i].UpPktStatus = upComplete; - p->rx_iobuf[i] = NULL; - } - - /* Loop the ring */ - p->rx_ring[i - 1].UpNextPtr = virt_to_bus(p->rx_ring); - - a3c90x_refill_rx_ring(p); - - return 0; -} - -static void a3c90x_free_rx_ring(struct INF_3C90X *p) -{ - DBGP("a3c90x_free_rx_ring\n"); - - free_dma(p->rx_ring, RX_RING_SIZE * sizeof(struct RXD)); - p->rx_ring = NULL; -} - -static void a3c90x_free_rx_iobuf(struct INF_3C90X *p) -{ - int i; - - DBGP("a3c90x_free_rx_iobuf\n"); - - for (i = 0; i < RX_RING_SIZE; i++) { - free_iob(p->rx_iobuf[i]); - p->rx_iobuf[i] = NULL; - } -} - -/** - * a3c90x_process_rx_packets - Checks for received packets, - * reports them to gPXE with netdev_rx() or netdev_rx_err() if there was an - * error while receiving the packet - * - * @v netdev Network device info - */ -static void a3c90x_process_rx_packets(struct net_device *netdev) -{ - int i; - unsigned int rx_status; - struct INF_3C90X *p = netdev_priv(netdev); - struct RXD *rx_cur_desc; - - DBGP("a3c90x_process_rx_packets\n"); - - for (i = 0; i < RX_RING_SIZE; i++) { - rx_cur_desc = p->rx_ring + p->rx_cur; - rx_status = rx_cur_desc->UpPktStatus; - - if (!(rx_status & upComplete) && !(rx_status & upError)) - break; - - if (p->rx_iobuf[p->rx_cur] == NULL) - break; - - if (rx_status & upError) { - DBG("Corrupted packet received\n"); - netdev_rx_err(netdev, p->rx_iobuf[p->rx_cur], - -EINVAL); - } else { - /* if we're here, we've got good packet */ - int packet_len; - - packet_len = rx_status & 0x1FFF; - iob_put(p->rx_iobuf[p->rx_cur], packet_len); - - DBG("received packet\n"); - DBG(" size: %d\n", packet_len); - - netdev_rx(netdev, p->rx_iobuf[p->rx_cur]); - } - - p->rx_iobuf[p->rx_cur] = NULL; /* invalidate rx desc */ - p->rx_cur = (p->rx_cur + 1) % RX_RING_SIZE; - } - a3c90x_refill_rx_ring(p); - -} - -/** - * a3c90x_poll - Routine that gets called periodically. - * Here we hanle transmitted and received packets. - * We could also check the link status from time to time, which we - * currently don't do. - * - * @v netdev Network device info - */ -static void a3c90x_poll(struct net_device *netdev) -{ - struct INF_3C90X *p = netdev_priv(netdev); - uint16_t raw_status, int_status; - - DBGP("a3c90x_poll\n"); - - raw_status = inw(p->IOAddr + regCommandIntStatus_w); - int_status = (raw_status & 0x0FFF); - - if ( int_status == 0 ) - return; - - a3c90x_internal_IssueCommand(p->IOAddr, cmdAcknowledgeInterrupt, - int_status); - - if (int_status & INT_TXCOMPLETE) - outb(0x00, p->IOAddr + regTxStatus_b); - - DBG("poll: status = %#04x\n", raw_status); - - a3c90x_process_tx_packets(netdev); - - a3c90x_process_rx_packets(netdev); -} - - - -static void a3c90x_free_resources(struct INF_3C90X *p) -{ - DBGP("a3c90x_free_resources\n"); - - a3c90x_free_tx_ring(p); - a3c90x_free_rx_ring(p); - a3c90x_free_rx_iobuf(p); -} - -/** - * a3c90x_remove - Routine to remove the card. Unregisters - * the NIC from gPXE, disables RX/TX and resets the card. - * - * @v pci PCI device info - */ -static void a3c90x_remove(struct pci_device *pci) -{ - struct net_device *netdev = pci_get_drvdata(pci); - struct INF_3C90X *inf_3c90x = netdev_priv(netdev); - - DBGP("a3c90x_remove\n"); - - a3c90x_reset(inf_3c90x); - - /* Disable the receiver and transmitter. */ - outw(cmdRxDisable, inf_3c90x->IOAddr + regCommandIntStatus_w); - outw(cmdTxDisable, inf_3c90x->IOAddr + regCommandIntStatus_w); - - unregister_netdev(netdev); - netdev_nullify(netdev); - netdev_put(netdev); -} - -static void a3c90x_irq(struct net_device *netdev, int enable) -{ - struct INF_3C90X *p = netdev_priv(netdev); - - DBGP("a3c90x_irq\n"); - - if (enable == 0) { - /* disable interrupts */ - a3c90x_internal_IssueCommand(p->IOAddr, - cmdSetInterruptEnable, 0); - } else { - a3c90x_internal_IssueCommand(p->IOAddr, - cmdSetInterruptEnable, - INT_TXCOMPLETE | - INT_UPCOMPLETE); - a3c90x_internal_IssueCommand(p->IOAddr, - cmdAcknowledgeInterrupt, - 0x661); - } -} - -/** - * a3c90x_hw_start - Initialize hardware, copy MAC address - * to NIC registers, set default receiver - */ -static void a3c90x_hw_start(struct net_device *netdev) -{ - int i, c; - unsigned int cfg; - unsigned int mopt; - unsigned short linktype; - struct INF_3C90X *inf_3c90x = netdev_priv(netdev); - - DBGP("a3c90x_hw_start\n"); - - /* 3C556: Invert MII power */ - if (inf_3c90x->is3c556) { - unsigned int tmp; - a3c90x_internal_SetWindow(inf_3c90x, winAddressing2); - tmp = inw(inf_3c90x->IOAddr + regResetOptions_2_w); - tmp |= 0x4000; - outw(tmp, inf_3c90x->IOAddr + regResetOptions_2_w); - } - - /* Copy MAC address into the NIC registers */ - a3c90x_internal_SetWindow(inf_3c90x, winAddressing2); - for (i = 0; i < ETH_ALEN; i++) - outb(netdev->ll_addr[i], - inf_3c90x->IOAddr + regStationAddress_2_3w + i); - for (i = 0; i < ETH_ALEN; i++) - outb(0, inf_3c90x->IOAddr + regStationMask_2_3w + i); - - /* Read the media options register, print a message and set default - * xcvr. - * - * Uses Media Option command on B revision, Reset Option on non-B - * revision cards -- same register address - */ - a3c90x_internal_SetWindow(inf_3c90x, winTxRxOptions3); - mopt = inw(inf_3c90x->IOAddr + regResetMediaOptions_3_w); - - /* mask out VCO bit that is defined as 10baseFL bit on B-rev cards */ - if (!inf_3c90x->isBrev) { - mopt &= 0x7F; - } - - DBG("Connectors present: "); - c = 0; - linktype = 0x0008; - if (mopt & 0x01) { - DBG("%s100Base-T4", (c++) ? ", " : ""); - linktype = linkMII; - } - if (mopt & 0x04) { - DBG("%s100Base-FX", (c++) ? ", " : ""); - linktype = link100BaseFX; - } - if (mopt & 0x10) { - DBG("%s10Base-2", (c++) ? ", " : ""); - linktype = link10Base2; - } - if (mopt & 0x20) { - DBG("%sAUI", (c++) ? ", " : ""); - linktype = linkAUI; - } - if (mopt & 0x40) { - DBG("%sMII", (c++) ? ", " : ""); - linktype = linkMII; - } - if ((mopt & 0xA) == 0xA) { - DBG("%s10Base-T / 100Base-TX", (c++) ? ", " : ""); - linktype = linkAutoneg; - } else if ((mopt & 0xA) == 0x2) { - DBG("%s100Base-TX", (c++) ? ", " : ""); - linktype = linkAutoneg; - } else if ((mopt & 0xA) == 0x8) { - DBG("%s10Base-T", (c++) ? ", " : ""); - linktype = linkAutoneg; - } - DBG(".\n"); - - /* Determine transceiver type to use, depending on value stored in - * eeprom 0x16 - */ - if (inf_3c90x->isBrev) { - if ((inf_3c90x->eeprom[0x16] & 0xFF00) == XCVR_MAGIC) { - /* User-defined */ - linktype = inf_3c90x->eeprom[0x16] & 0x000F; - } - } else { - /* I don't know what MII MAC only mode is!!! */ - if (linktype == linkExternalMII) { - if (inf_3c90x->isBrev) - DBG("WARNING: MII External MAC Mode only supported on B-revision " "cards!!!!\nFalling Back to MII Mode\n"); - linktype = linkMII; - } - } - - /* enable DC converter for 10-Base-T */ - if (linktype == link10Base2) { - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdEnableDcConverter, 0); - } - - /* Set the link to the type we just determined. */ - a3c90x_internal_SetWindow(inf_3c90x, winTxRxOptions3); - cfg = inl(inf_3c90x->IOAddr + regInternalConfig_3_l); - cfg &= ~(0xF << 20); - cfg |= (linktype << 20); - - DBG("Setting internal cfg register: 0x%08X (linktype: 0x%02X)\n", - cfg, linktype); - - outl(cfg, inf_3c90x->IOAddr + regInternalConfig_3_l); - - /* Now that we set the xcvr type, reset the Tx and Rx */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdTxReset, 0x00); - - if (!inf_3c90x->isBrev) - outb(0x01, inf_3c90x->IOAddr + regTxFreeThresh_b); - - /* Set the RX filter = receive only individual pkts & multicast & bcast. */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdSetRxFilter, - 0x01 + 0x02 + 0x04); - - - /* - * set Indication and Interrupt flags , acknowledge any IRQ's - */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdSetInterruptEnable, - INT_TXCOMPLETE | INT_UPCOMPLETE); - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdSetIndicationEnable, - INT_TXCOMPLETE | INT_UPCOMPLETE); - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, - cmdAcknowledgeInterrupt, 0x661); -} - -/** - * a3c90x_open - Routine to initialize the card. Initialize hardware, - * allocate TX and RX ring, send RX ring address to the NIC. - * - * @v netdev Network device info - * - * @ret Returns 0 on success, negative on failure - */ -static int a3c90x_open(struct net_device *netdev) -{ - int rc; - struct INF_3C90X *inf_3c90x = netdev_priv(netdev); - - DBGP("a3c90x_open\n"); - - a3c90x_hw_start(netdev); - - rc = a3c90x_setup_tx_ring(inf_3c90x); - if (rc != 0) { - DBG("Error setting up TX Ring\n"); - goto error; - } - - rc = a3c90x_setup_rx_ring(inf_3c90x); - if (rc != 0) { - DBG("Error setting up RX Ring\n"); - goto error; - } - - /* send rx_ring address to NIC */ - outl(virt_to_bus(inf_3c90x->rx_ring), - inf_3c90x->IOAddr + regUpListPtr_l); - - /* enable packet transmission and reception */ - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdTxEnable, 0); - a3c90x_internal_IssueCommand(inf_3c90x->IOAddr, cmdRxEnable, 0); - - return 0; - - error: - a3c90x_free_resources(inf_3c90x); - a3c90x_reset(inf_3c90x); - return rc; -} - -/** - * a3c90x_close - free()s TX and RX ring, disablex RX/TX, resets NIC - * - * @v netdev Network device info - */ -static void a3c90x_close(struct net_device *netdev) -{ - struct INF_3C90X *inf_3c90x = netdev_priv(netdev); - - DBGP("a3c90x_close\n"); - - a3c90x_reset(inf_3c90x); - outw(cmdRxDisable, inf_3c90x->IOAddr + regCommandIntStatus_w); - outw(cmdTxDisable, inf_3c90x->IOAddr + regCommandIntStatus_w); - a3c90x_free_resources(inf_3c90x); -} - -static struct net_device_operations a3c90x_operations = { - .open = a3c90x_open, - .close = a3c90x_close, - .poll = a3c90x_poll, - .transmit = a3c90x_transmit, - .irq = a3c90x_irq, -}; - -/** - * a3c90x_probe: exported routine to probe for the 3c905 card. - * If this routine is called, the pci functions did find the - * card. We read the eeprom here and get the MAC address. - * Initialization is done in a3c90x_open(). - * - * @v pci PCI device info - * @ pci_id PCI device IDs - * - * @ret rc Returns 0 on success, negative on failure - */ -static int a3c90x_probe(struct pci_device *pci, - const struct pci_device_id *pci_id __unused) -{ - - struct net_device *netdev; - struct INF_3C90X *inf_3c90x; - unsigned char *HWAddr; - int rc; - - DBGP("a3c90x_probe\n"); - - if (pci->ioaddr == 0) - return -EINVAL; - - netdev = alloc_etherdev(sizeof(*inf_3c90x)); - if (!netdev) - return -ENOMEM; - - netdev_init(netdev, &a3c90x_operations); - pci_set_drvdata(pci, netdev); - netdev->dev = &pci->dev; - - inf_3c90x = netdev_priv(netdev); - memset(inf_3c90x, 0, sizeof(*inf_3c90x)); - - adjust_pci_device(pci); - - inf_3c90x->is3c556 = (pci->device == 0x6055); - inf_3c90x->IOAddr = pci->ioaddr; - inf_3c90x->CurrentWindow = winNone; - - inf_3c90x->isBrev = 1; - switch (pci->device) { - case 0x9000: /* 10 Base TPO */ - case 0x9001: /* 10/100 T4 */ - case 0x9050: /* 10/100 TPO */ - case 0x9051: /* 10 Base Combo */ - inf_3c90x->isBrev = 0; - break; - } - - DBG("[3c90x]: found NIC(0x%04X, 0x%04X), isBrev=%d, is3c556=%d\n", - pci->vendor, pci->device, inf_3c90x->isBrev, - inf_3c90x->is3c556); - - /* initialize nvs device */ - inf_3c90x->nvs.word_len_log2 = 1; /* word */ - inf_3c90x->nvs.size = (inf_3c90x->isBrev ? 0x20 : 0x17); - inf_3c90x->nvs.block_size = 1; - inf_3c90x->nvs.read = a3c90x_internal_ReadEeprom; - inf_3c90x->nvs.write = a3c90x_internal_WriteEeprom; - - /* reset NIC before accessing any data from it */ - a3c90x_reset(inf_3c90x); - - /* load eeprom contents to inf_3c90x->eeprom */ - a3c90x_internal_ReadEepromContents(inf_3c90x); - - HWAddr = netdev->hw_addr; - - /* Retrieve the Hardware address */ - HWAddr[0] = inf_3c90x->eeprom[eepromHwAddrOffset + 0] >> 8; - HWAddr[1] = inf_3c90x->eeprom[eepromHwAddrOffset + 0] & 0xFF; - HWAddr[2] = inf_3c90x->eeprom[eepromHwAddrOffset + 1] >> 8; - HWAddr[3] = inf_3c90x->eeprom[eepromHwAddrOffset + 1] & 0xFF; - HWAddr[4] = inf_3c90x->eeprom[eepromHwAddrOffset + 2] >> 8; - HWAddr[5] = inf_3c90x->eeprom[eepromHwAddrOffset + 2] & 0xFF; - - /* we don't handle linkstates yet, so we're always up */ - netdev_link_up(netdev); - - if ((rc = register_netdev(netdev)) != 0) { - DBG("3c90x: register_netdev() failed\n"); - netdev_put(netdev); - return rc; - } - - return 0; -} - -static struct pci_device_id a3c90x_nics[] = { -/* Original 90x revisions: */ - PCI_ROM(0x10b7, 0x6055, "3c556", "3C556", 0), /* Huricane */ - PCI_ROM(0x10b7, 0x9000, "3c905-tpo", "3Com900-TPO", 0), /* 10 Base TPO */ - PCI_ROM(0x10b7, 0x9001, "3c905-t4", "3Com900-Combo", 0), /* 10/100 T4 */ - PCI_ROM(0x10b7, 0x9050, "3c905-tpo100", "3Com905-TX", 0), /* 100 Base TX / 10/100 TPO */ - PCI_ROM(0x10b7, 0x9051, "3c905-combo", "3Com905-T4", 0), /* 100 Base T4 / 10 Base Combo */ -/* Newer 90xB revisions: */ - PCI_ROM(0x10b7, 0x9004, "3c905b-tpo", "3Com900B-TPO", 0), /* 10 Base TPO */ - PCI_ROM(0x10b7, 0x9005, "3c905b-combo", "3Com900B-Combo", 0), /* 10 Base Combo */ - PCI_ROM(0x10b7, 0x9006, "3c905b-tpb2", "3Com900B-2/T", 0), /* 10 Base TP and Base2 */ - PCI_ROM(0x10b7, 0x900a, "3c905b-fl", "3Com900B-FL", 0), /* 10 Base FL */ - PCI_ROM(0x10b7, 0x9055, "3c905b-tpo100", "3Com905B-TX", 0), /* 10/100 TPO */ - PCI_ROM(0x10b7, 0x9056, "3c905b-t4", "3Com905B-T4", 0), /* 10/100 T4 */ - PCI_ROM(0x10b7, 0x9058, "3c905b-9058", "3Com905B-9058", 0), /* Cyclone 10/100/BNC */ - PCI_ROM(0x10b7, 0x905a, "3c905b-fx", "3Com905B-FL", 0), /* 100 Base FX / 10 Base FX */ -/* Newer 90xC revision: */ - PCI_ROM(0x10b7, 0x9200, "3c905c-tpo", "3Com905C-TXM", 0), /* 10/100 TPO (3C905C-TXM) */ - PCI_ROM(0x10b7, 0x9202, "3c920b-emb-ati", "3c920B-EMB-WNM (ATI Radeon 9100 IGP)", 0), /* 3c920B-EMB-WNM (ATI Radeon 9100 IGP) */ - PCI_ROM(0x10b7, 0x9210, "3c920b-emb-wnm", "3Com20B-EMB WNM", 0), - PCI_ROM(0x10b7, 0x9800, "3c980", "3Com980-Cyclone", 0), /* Cyclone */ - PCI_ROM(0x10b7, 0x9805, "3c9805", "3Com9805", 0), /* Dual Port Server Cyclone */ - PCI_ROM(0x10b7, 0x7646, "3csoho100-tx", "3CSOHO100-TX", 0), /* Hurricane */ - PCI_ROM(0x10b7, 0x4500, "3c450", "3Com450 HomePNA Tornado", 0), - PCI_ROM(0x10b7, 0x1201, "3c982a", "3Com982A", 0), - PCI_ROM(0x10b7, 0x1202, "3c982b", "3Com982B", 0), -}; - -struct pci_driver a3c90x_driver __pci_driver = { - .ids = a3c90x_nics, - .id_count = (sizeof(a3c90x_nics) / sizeof(a3c90x_nics[0])), - .probe = a3c90x_probe, - .remove = a3c90x_remove, -}; - -/* - * Local variables: - * c-basic-offset: 8 - * c-indent-level: 8 - * tab-width: 8 - * End: - */ |