+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * acenic.c: Linux driver for the Alteon AceNIC Gigabit Ethernet card
- * and other Tigon based cards.
- *
- * Copyright 1998-2002 by Jes Sorensen, <jes@trained-monkey.org>.
- *
- * Thanks to Alteon and 3Com for providing hardware and documentation
- * enabling me to write this driver.
- *
- * A mailing list for discussing the use of this driver has been
- * setup, please subscribe to the lists if you have any questions
- * about the driver. Send mail to linux-acenic-help@sunsite.auc.dk to
- * see how to subscribe.
- *
- * Additional credits:
- * Pete Wyckoff <wyckoff@ca.sandia.gov>: Initial Linux/Alpha and trace
- * dump support. The trace dump support has not been
- * integrated yet however.
- * Troy Benjegerdes: Big Endian (PPC) patches.
- * Nate Stahl: Better out of memory handling and stats support.
- * Aman Singla: Nasty race between interrupt handler and tx code dealing
- * with 'testing the tx_ret_csm and setting tx_full'
- * David S. Miller <davem@redhat.com>: conversion to new PCI dma mapping
- * infrastructure and Sparc support
- * Pierrick Pinasseau (CERN): For lending me an Ultra 5 to test the
- * driver under Linux/Sparc64
- * Matt Domsch <Matt_Domsch@dell.com>: Detect Alteon 1000baseT cards
- * ETHTOOL_GDRVINFO support
- * Chip Salzenberg <chip@valinux.com>: Fix race condition between tx
- * handler and close() cleanup.
- * Ken Aaker <kdaaker@rchland.vnet.ibm.com>: Correct check for whether
- * memory mapped IO is enabled to
- * make the driver work on RS/6000.
- * Takayoshi Kouchi <kouchi@hpc.bs1.fc.nec.co.jp>: Identifying problem
- * where the driver would disable
- * bus master mode if it had to disable
- * write and invalidate.
- * Stephen Hack <stephen_hack@hp.com>: Fixed ace_set_mac_addr for little
- * endian systems.
- * Val Henson <vhenson@esscom.com>: Reset Jumbo skb producer and
- * rx producer index when
- * flushing the Jumbo ring.
- * Hans Grobler <grobh@sun.ac.za>: Memory leak fixes in the
- * driver init path.
- * Grant Grundler <grundler@cup.hp.com>: PCI write posting fixes.
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/pci.h>
-#include <linux/dma-mapping.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/delay.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/sockios.h>
-#include <linux/firmware.h>
-#include <linux/slab.h>
-#include <linux/prefetch.h>
-#include <linux/if_vlan.h>
-
-#ifdef SIOCETHTOOL
-#include <linux/ethtool.h>
-#endif
-
-#include <net/sock.h>
-#include <net/ip.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/byteorder.h>
-#include <linux/uaccess.h>
-
-
-#define DRV_NAME "acenic"
-
-#undef INDEX_DEBUG
-
-#ifdef CONFIG_ACENIC_OMIT_TIGON_I
-#define ACE_IS_TIGON_I(ap) 0
-#define ACE_TX_RING_ENTRIES(ap) MAX_TX_RING_ENTRIES
-#else
-#define ACE_IS_TIGON_I(ap) (ap->version == 1)
-#define ACE_TX_RING_ENTRIES(ap) ap->tx_ring_entries
-#endif
-
-#ifndef PCI_VENDOR_ID_ALTEON
-#define PCI_VENDOR_ID_ALTEON 0x12ae
-#endif
-#ifndef PCI_DEVICE_ID_ALTEON_ACENIC_FIBRE
-#define PCI_DEVICE_ID_ALTEON_ACENIC_FIBRE 0x0001
-#define PCI_DEVICE_ID_ALTEON_ACENIC_COPPER 0x0002
-#endif
-#ifndef PCI_DEVICE_ID_3COM_3C985
-#define PCI_DEVICE_ID_3COM_3C985 0x0001
-#endif
-#ifndef PCI_VENDOR_ID_NETGEAR
-#define PCI_VENDOR_ID_NETGEAR 0x1385
-#define PCI_DEVICE_ID_NETGEAR_GA620 0x620a
-#endif
-#ifndef PCI_DEVICE_ID_NETGEAR_GA620T
-#define PCI_DEVICE_ID_NETGEAR_GA620T 0x630a
-#endif
-
-
-/*
- * Farallon used the DEC vendor ID by mistake and they seem not
- * to care - stinky!
- */
-#ifndef PCI_DEVICE_ID_FARALLON_PN9000SX
-#define PCI_DEVICE_ID_FARALLON_PN9000SX 0x1a
-#endif
-#ifndef PCI_DEVICE_ID_FARALLON_PN9100T
-#define PCI_DEVICE_ID_FARALLON_PN9100T 0xfa
-#endif
-#ifndef PCI_VENDOR_ID_SGI
-#define PCI_VENDOR_ID_SGI 0x10a9
-#endif
-#ifndef PCI_DEVICE_ID_SGI_ACENIC
-#define PCI_DEVICE_ID_SGI_ACENIC 0x0009
-#endif
-
-static const struct pci_device_id acenic_pci_tbl[] = {
- { PCI_VENDOR_ID_ALTEON, PCI_DEVICE_ID_ALTEON_ACENIC_FIBRE,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- { PCI_VENDOR_ID_ALTEON, PCI_DEVICE_ID_ALTEON_ACENIC_COPPER,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C985,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- { PCI_VENDOR_ID_NETGEAR, PCI_DEVICE_ID_NETGEAR_GA620,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- { PCI_VENDOR_ID_NETGEAR, PCI_DEVICE_ID_NETGEAR_GA620T,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- /*
- * Farallon used the DEC vendor ID on their cards incorrectly,
- * then later Alteon's ID.
- */
- { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_FARALLON_PN9000SX,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- { PCI_VENDOR_ID_ALTEON, PCI_DEVICE_ID_FARALLON_PN9100T,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- { PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_ACENIC,
- PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
- { }
-};
-MODULE_DEVICE_TABLE(pci, acenic_pci_tbl);
-
-#define ace_sync_irq(irq) synchronize_irq(irq)
-
-#ifndef offset_in_page
-#define offset_in_page(ptr) ((unsigned long)(ptr) & ~PAGE_MASK)
-#endif
-
-#define ACE_MAX_MOD_PARMS 8
-#define BOARD_IDX_STATIC 0
-#define BOARD_IDX_OVERFLOW -1
-
-#include "acenic.h"
-
-/*
- * These must be defined before the firmware is included.
- */
-#define MAX_TEXT_LEN 96*1024
-#define MAX_RODATA_LEN 8*1024
-#define MAX_DATA_LEN 2*1024
-
-#ifndef tigon2FwReleaseLocal
-#define tigon2FwReleaseLocal 0
-#endif
-
-/*
- * This driver currently supports Tigon I and Tigon II based cards
- * including the Alteon AceNIC, the 3Com 3C985[B] and NetGear
- * GA620. The driver should also work on the SGI, DEC and Farallon
- * versions of the card, however I have not been able to test that
- * myself.
- *
- * This card is really neat, it supports receive hardware checksumming
- * and jumbo frames (up to 9000 bytes) and does a lot of work in the
- * firmware. Also the programming interface is quite neat, except for
- * the parts dealing with the i2c eeprom on the card ;-)
- *
- * Using jumbo frames:
- *
- * To enable jumbo frames, simply specify an mtu between 1500 and 9000
- * bytes to ifconfig. Jumbo frames can be enabled or disabled at any time
- * by running `ifconfig eth<X> mtu <MTU>' with <X> being the Ethernet
- * interface number and <MTU> being the MTU value.
- *
- * Module parameters:
- *
- * When compiled as a loadable module, the driver allows for a number
- * of module parameters to be specified. The driver supports the
- * following module parameters:
- *
- * trace=<val> - Firmware trace level. This requires special traced
- * firmware to replace the firmware supplied with
- * the driver - for debugging purposes only.
- *
- * link=<val> - Link state. Normally you want to use the default link
- * parameters set by the driver. This can be used to
- * override these in case your switch doesn't negotiate
- * the link properly. Valid values are:
- * 0x0001 - Force half duplex link.
- * 0x0002 - Do not negotiate line speed with the other end.
- * 0x0010 - 10Mbit/sec link.
- * 0x0020 - 100Mbit/sec link.
- * 0x0040 - 1000Mbit/sec link.
- * 0x0100 - Do not negotiate flow control.
- * 0x0200 - Enable RX flow control Y
- * 0x0400 - Enable TX flow control Y (Tigon II NICs only).
- * Default value is 0x0270, ie. enable link+flow
- * control negotiation. Negotiating the highest
- * possible link speed with RX flow control enabled.
- *
- * When disabling link speed negotiation, only one link
- * speed is allowed to be specified!
- *
- * tx_coal_tick=<val> - number of coalescing clock ticks (us) allowed
- * to wait for more packets to arive before
- * interrupting the host, from the time the first
- * packet arrives.
- *
- * rx_coal_tick=<val> - number of coalescing clock ticks (us) allowed
- * to wait for more packets to arive in the transmit ring,
- * before interrupting the host, after transmitting the
- * first packet in the ring.
- *
- * max_tx_desc=<val> - maximum number of transmit descriptors
- * (packets) transmitted before interrupting the host.
- *
- * max_rx_desc=<val> - maximum number of receive descriptors
- * (packets) received before interrupting the host.
- *
- * tx_ratio=<val> - 7 bit value (0 - 63) specifying the split in 64th
- * increments of the NIC's on board memory to be used for
- * transmit and receive buffers. For the 1MB NIC app. 800KB
- * is available, on the 1/2MB NIC app. 300KB is available.
- * 68KB will always be available as a minimum for both
- * directions. The default value is a 50/50 split.
- * dis_pci_mem_inval=<val> - disable PCI memory write and invalidate
- * operations, default (1) is to always disable this as
- * that is what Alteon does on NT. I have not been able
- * to measure any real performance differences with
- * this on my systems. Set <val>=0 if you want to
- * enable these operations.
- *
- * If you use more than one NIC, specify the parameters for the
- * individual NICs with a comma, ie. trace=0,0x00001fff,0 you want to
- * run tracing on NIC #2 but not on NIC #1 and #3.
- *
- * TODO:
- *
- * - Proper multicast support.
- * - NIC dump support.
- * - More tuning parameters.
- *
- * The mini ring is not used under Linux and I am not sure it makes sense
- * to actually use it.
- *
- * New interrupt handler strategy:
- *
- * The old interrupt handler worked using the traditional method of
- * replacing an skbuff with a new one when a packet arrives. However
- * the rx rings do not need to contain a static number of buffer
- * descriptors, thus it makes sense to move the memory allocation out
- * of the main interrupt handler and do it in a bottom half handler
- * and only allocate new buffers when the number of buffers in the
- * ring is below a certain threshold. In order to avoid starving the
- * NIC under heavy load it is however necessary to force allocation
- * when hitting a minimum threshold. The strategy for alloction is as
- * follows:
- *
- * RX_LOW_BUF_THRES - allocate buffers in the bottom half
- * RX_PANIC_LOW_THRES - we are very low on buffers, allocate
- * the buffers in the interrupt handler
- * RX_RING_THRES - maximum number of buffers in the rx ring
- * RX_MINI_THRES - maximum number of buffers in the mini ring
- * RX_JUMBO_THRES - maximum number of buffers in the jumbo ring
- *
- * One advantagous side effect of this allocation approach is that the
- * entire rx processing can be done without holding any spin lock
- * since the rx rings and registers are totally independent of the tx
- * ring and its registers. This of course includes the kmalloc's of
- * new skb's. Thus start_xmit can run in parallel with rx processing
- * and the memory allocation on SMP systems.
- *
- * Note that running the skb reallocation in a bottom half opens up
- * another can of races which needs to be handled properly. In
- * particular it can happen that the interrupt handler tries to run
- * the reallocation while the bottom half is either running on another
- * CPU or was interrupted on the same CPU. To get around this the
- * driver uses bitops to prevent the reallocation routines from being
- * reentered.
- *
- * TX handling can also be done without holding any spin lock, wheee
- * this is fun! since tx_ret_csm is only written to by the interrupt
- * handler. The case to be aware of is when shutting down the device
- * and cleaning up where it is necessary to make sure that
- * start_xmit() is not running while this is happening. Well DaveM
- * informs me that this case is already protected against ... bye bye
- * Mr. Spin Lock, it was nice to know you.
- *
- * TX interrupts are now partly disabled so the NIC will only generate
- * TX interrupts for the number of coal ticks, not for the number of
- * TX packets in the queue. This should reduce the number of TX only,
- * ie. when no RX processing is done, interrupts seen.
- */
-
-/*
- * Threshold values for RX buffer allocation - the low water marks for
- * when to start refilling the rings are set to 75% of the ring
- * sizes. It seems to make sense to refill the rings entirely from the
- * intrrupt handler once it gets below the panic threshold, that way
- * we don't risk that the refilling is moved to another CPU when the
- * one running the interrupt handler just got the slab code hot in its
- * cache.
- */
-#define RX_RING_SIZE 72
-#define RX_MINI_SIZE 64
-#define RX_JUMBO_SIZE 48
-
-#define RX_PANIC_STD_THRES 16
-#define RX_PANIC_STD_REFILL (3*RX_PANIC_STD_THRES)/2
-#define RX_LOW_STD_THRES (3*RX_RING_SIZE)/4
-#define RX_PANIC_MINI_THRES 12
-#define RX_PANIC_MINI_REFILL (3*RX_PANIC_MINI_THRES)/2
-#define RX_LOW_MINI_THRES (3*RX_MINI_SIZE)/4
-#define RX_PANIC_JUMBO_THRES 6
-#define RX_PANIC_JUMBO_REFILL (3*RX_PANIC_JUMBO_THRES)/2
-#define RX_LOW_JUMBO_THRES (3*RX_JUMBO_SIZE)/4
-
-
-/*
- * Size of the mini ring entries, basically these just should be big
- * enough to take TCP ACKs
- */
-#define ACE_MINI_SIZE 100
-
-#define ACE_MINI_BUFSIZE ACE_MINI_SIZE
-#define ACE_STD_BUFSIZE (ACE_STD_MTU + ETH_HLEN + 4)
-#define ACE_JUMBO_BUFSIZE (ACE_JUMBO_MTU + ETH_HLEN + 4)
-
-/*
- * There seems to be a magic difference in the effect between 995 and 996
- * but little difference between 900 and 995 ... no idea why.
- *
- * There is now a default set of tuning parameters which is set, depending
- * on whether or not the user enables Jumbo frames. It's assumed that if
- * Jumbo frames are enabled, the user wants optimal tuning for that case.
- */
-#define DEF_TX_COAL 400 /* 996 */
-#define DEF_TX_MAX_DESC 60 /* was 40 */
-#define DEF_RX_COAL 120 /* 1000 */
-#define DEF_RX_MAX_DESC 25
-#define DEF_TX_RATIO 21 /* 24 */
-
-#define DEF_JUMBO_TX_COAL 20
-#define DEF_JUMBO_TX_MAX_DESC 60
-#define DEF_JUMBO_RX_COAL 30
-#define DEF_JUMBO_RX_MAX_DESC 6
-#define DEF_JUMBO_TX_RATIO 21
-
-#if tigon2FwReleaseLocal < 20001118
-/*
- * Standard firmware and early modifications duplicate
- * IRQ load without this flag (coal timer is never reset).
- * Note that with this flag tx_coal should be less than
- * time to xmit full tx ring.
- * 400usec is not so bad for tx ring size of 128.
- */
-#define TX_COAL_INTS_ONLY 1 /* worth it */
-#else
-/*
- * With modified firmware, this is not necessary, but still useful.
- */
-#define TX_COAL_INTS_ONLY 1
-#endif
-
-#define DEF_TRACE 0
-#define DEF_STAT (2 * TICKS_PER_SEC)
-
-
-static int link_state[ACE_MAX_MOD_PARMS];
-static int trace[ACE_MAX_MOD_PARMS];
-static int tx_coal_tick[ACE_MAX_MOD_PARMS];
-static int rx_coal_tick[ACE_MAX_MOD_PARMS];
-static int max_tx_desc[ACE_MAX_MOD_PARMS];
-static int max_rx_desc[ACE_MAX_MOD_PARMS];
-static int tx_ratio[ACE_MAX_MOD_PARMS];
-static int dis_pci_mem_inval[ACE_MAX_MOD_PARMS] = {1, 1, 1, 1, 1, 1, 1, 1};
-
-MODULE_AUTHOR("Jes Sorensen <jes@trained-monkey.org>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("AceNIC/3C985/GA620 Gigabit Ethernet driver");
-#ifndef CONFIG_ACENIC_OMIT_TIGON_I
-MODULE_FIRMWARE("acenic/tg1.bin");
-#endif
-MODULE_FIRMWARE("acenic/tg2.bin");
-
-module_param_array_named(link, link_state, int, NULL, 0);
-module_param_array(trace, int, NULL, 0);
-module_param_array(tx_coal_tick, int, NULL, 0);
-module_param_array(max_tx_desc, int, NULL, 0);
-module_param_array(rx_coal_tick, int, NULL, 0);
-module_param_array(max_rx_desc, int, NULL, 0);
-module_param_array(tx_ratio, int, NULL, 0);
-MODULE_PARM_DESC(link, "AceNIC/3C985/NetGear link state");
-MODULE_PARM_DESC(trace, "AceNIC/3C985/NetGear firmware trace level");
-MODULE_PARM_DESC(tx_coal_tick, "AceNIC/3C985/GA620 max clock ticks to wait from first tx descriptor arrives");
-MODULE_PARM_DESC(max_tx_desc, "AceNIC/3C985/GA620 max number of transmit descriptors to wait");
-MODULE_PARM_DESC(rx_coal_tick, "AceNIC/3C985/GA620 max clock ticks to wait from first rx descriptor arrives");
-MODULE_PARM_DESC(max_rx_desc, "AceNIC/3C985/GA620 max number of receive descriptors to wait");
-MODULE_PARM_DESC(tx_ratio, "AceNIC/3C985/GA620 ratio of NIC memory used for TX/RX descriptors (range 0-63)");
-
-
-static const char version[] =
- "acenic.c: v0.92 08/05/2002 Jes Sorensen, linux-acenic@SunSITE.dk\n"
- " http://home.cern.ch/~jes/gige/acenic.html\n";
-
-static int ace_get_link_ksettings(struct net_device *,
- struct ethtool_link_ksettings *);
-static int ace_set_link_ksettings(struct net_device *,
- const struct ethtool_link_ksettings *);
-static void ace_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
-
-static const struct ethtool_ops ace_ethtool_ops = {
- .get_drvinfo = ace_get_drvinfo,
- .get_link_ksettings = ace_get_link_ksettings,
- .set_link_ksettings = ace_set_link_ksettings,
-};
-
-static void ace_watchdog(struct net_device *dev, unsigned int txqueue);
-
-static const struct net_device_ops ace_netdev_ops = {
- .ndo_open = ace_open,
- .ndo_stop = ace_close,
- .ndo_tx_timeout = ace_watchdog,
- .ndo_get_stats = ace_get_stats,
- .ndo_start_xmit = ace_start_xmit,
- .ndo_set_rx_mode = ace_set_multicast_list,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = ace_set_mac_addr,
- .ndo_change_mtu = ace_change_mtu,
-};
-
-static int acenic_probe_one(struct pci_dev *pdev,
- const struct pci_device_id *id)
-{
- struct net_device *dev;
- struct ace_private *ap;
- static int boards_found;
-
- dev = alloc_etherdev(sizeof(struct ace_private));
- if (dev == NULL)
- return -ENOMEM;
-
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- ap = netdev_priv(dev);
- ap->ndev = dev;
- ap->pdev = pdev;
- ap->name = pci_name(pdev);
-
- dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
- dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
-
- dev->watchdog_timeo = 5*HZ;
- dev->min_mtu = 0;
- dev->max_mtu = ACE_JUMBO_MTU;
-
- dev->netdev_ops = &ace_netdev_ops;
- dev->ethtool_ops = &ace_ethtool_ops;
-
- /* we only display this string ONCE */
- if (!boards_found)
- printk(version);
-
- if (pci_enable_device(pdev))
- goto fail_free_netdev;
-
- /*
- * Enable master mode before we start playing with the
- * pci_command word since pci_set_master() will modify
- * it.
- */
- pci_set_master(pdev);
-
- pci_read_config_word(pdev, PCI_COMMAND, &ap->pci_command);
-
- /* OpenFirmware on Mac's does not set this - DOH.. */
- if (!(ap->pci_command & PCI_COMMAND_MEMORY)) {
- printk(KERN_INFO "%s: Enabling PCI Memory Mapped "
- "access - was not enabled by BIOS/Firmware\n",
- ap->name);
- ap->pci_command = ap->pci_command | PCI_COMMAND_MEMORY;
- pci_write_config_word(ap->pdev, PCI_COMMAND,
- ap->pci_command);
- wmb();
- }
-
- pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &ap->pci_latency);
- if (ap->pci_latency <= 0x40) {
- ap->pci_latency = 0x40;
- pci_write_config_byte(pdev, PCI_LATENCY_TIMER, ap->pci_latency);
- }
-
- /*
- * Remap the regs into kernel space - this is abuse of
- * dev->base_addr since it was means for I/O port
- * addresses but who gives a damn.
- */
- dev->base_addr = pci_resource_start(pdev, 0);
- ap->regs = ioremap(dev->base_addr, 0x4000);
- if (!ap->regs) {
- printk(KERN_ERR "%s: Unable to map I/O register, "
- "AceNIC %i will be disabled.\n",
- ap->name, boards_found);
- goto fail_free_netdev;
- }
-
- switch(pdev->vendor) {
- case PCI_VENDOR_ID_ALTEON:
- if (pdev->device == PCI_DEVICE_ID_FARALLON_PN9100T) {
- printk(KERN_INFO "%s: Farallon PN9100-T ",
- ap->name);
- } else {
- printk(KERN_INFO "%s: Alteon AceNIC ",
- ap->name);
- }
- break;
- case PCI_VENDOR_ID_3COM:
- printk(KERN_INFO "%s: 3Com 3C985 ", ap->name);
- break;
- case PCI_VENDOR_ID_NETGEAR:
- printk(KERN_INFO "%s: NetGear GA620 ", ap->name);
- break;
- case PCI_VENDOR_ID_DEC:
- if (pdev->device == PCI_DEVICE_ID_FARALLON_PN9000SX) {
- printk(KERN_INFO "%s: Farallon PN9000-SX ",
- ap->name);
- break;
- }
- fallthrough;
- case PCI_VENDOR_ID_SGI:
- printk(KERN_INFO "%s: SGI AceNIC ", ap->name);
- break;
- default:
- printk(KERN_INFO "%s: Unknown AceNIC ", ap->name);
- break;
- }
-
- printk("Gigabit Ethernet at 0x%08lx, ", dev->base_addr);
- printk("irq %d\n", pdev->irq);
-
-#ifdef CONFIG_ACENIC_OMIT_TIGON_I
- if ((readl(&ap->regs->HostCtrl) >> 28) == 4) {
- printk(KERN_ERR "%s: Driver compiled without Tigon I"
- " support - NIC disabled\n", dev->name);
- goto fail_uninit;
- }
-#endif
-
- if (ace_allocate_descriptors(dev))
- goto fail_free_netdev;
-
-#ifdef MODULE
- if (boards_found >= ACE_MAX_MOD_PARMS)
- ap->board_idx = BOARD_IDX_OVERFLOW;
- else
- ap->board_idx = boards_found;
-#else
- ap->board_idx = BOARD_IDX_STATIC;
-#endif
-
- if (ace_init(dev))
- goto fail_free_netdev;
-
- if (register_netdev(dev)) {
- printk(KERN_ERR "acenic: device registration failed\n");
- goto fail_uninit;
- }
- ap->name = dev->name;
-
- dev->features |= NETIF_F_HIGHDMA;
-
- pci_set_drvdata(pdev, dev);
-
- boards_found++;
- return 0;
-
- fail_uninit:
- ace_init_cleanup(dev);
- fail_free_netdev:
- free_netdev(dev);
- return -ENODEV;
-}
-
-static void acenic_remove_one(struct pci_dev *pdev)
-{
- struct net_device *dev = pci_get_drvdata(pdev);
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- short i;
-
- unregister_netdev(dev);
-
- writel(readl(®s->CpuCtrl) | CPU_HALT, ®s->CpuCtrl);
- if (ap->version >= 2)
- writel(readl(®s->CpuBCtrl) | CPU_HALT, ®s->CpuBCtrl);
-
- /*
- * This clears any pending interrupts
- */
- writel(1, ®s->Mb0Lo);
- readl(®s->CpuCtrl); /* flush */
-
- /*
- * Make sure no other CPUs are processing interrupts
- * on the card before the buffers are being released.
- * Otherwise one might experience some `interesting'
- * effects.
- *
- * Then release the RX buffers - jumbo buffers were
- * already released in ace_close().
- */
- ace_sync_irq(dev->irq);
-
- for (i = 0; i < RX_STD_RING_ENTRIES; i++) {
- struct sk_buff *skb = ap->skb->rx_std_skbuff[i].skb;
-
- if (skb) {
- struct ring_info *ringp;
- dma_addr_t mapping;
-
- ringp = &ap->skb->rx_std_skbuff[i];
- mapping = dma_unmap_addr(ringp, mapping);
- dma_unmap_page(&ap->pdev->dev, mapping,
- ACE_STD_BUFSIZE, DMA_FROM_DEVICE);
-
- ap->rx_std_ring[i].size = 0;
- ap->skb->rx_std_skbuff[i].skb = NULL;
- dev_kfree_skb(skb);
- }
- }
-
- if (ap->version >= 2) {
- for (i = 0; i < RX_MINI_RING_ENTRIES; i++) {
- struct sk_buff *skb = ap->skb->rx_mini_skbuff[i].skb;
-
- if (skb) {
- struct ring_info *ringp;
- dma_addr_t mapping;
-
- ringp = &ap->skb->rx_mini_skbuff[i];
- mapping = dma_unmap_addr(ringp,mapping);
- dma_unmap_page(&ap->pdev->dev, mapping,
- ACE_MINI_BUFSIZE,
- DMA_FROM_DEVICE);
-
- ap->rx_mini_ring[i].size = 0;
- ap->skb->rx_mini_skbuff[i].skb = NULL;
- dev_kfree_skb(skb);
- }
- }
- }
-
- for (i = 0; i < RX_JUMBO_RING_ENTRIES; i++) {
- struct sk_buff *skb = ap->skb->rx_jumbo_skbuff[i].skb;
- if (skb) {
- struct ring_info *ringp;
- dma_addr_t mapping;
-
- ringp = &ap->skb->rx_jumbo_skbuff[i];
- mapping = dma_unmap_addr(ringp, mapping);
- dma_unmap_page(&ap->pdev->dev, mapping,
- ACE_JUMBO_BUFSIZE, DMA_FROM_DEVICE);
-
- ap->rx_jumbo_ring[i].size = 0;
- ap->skb->rx_jumbo_skbuff[i].skb = NULL;
- dev_kfree_skb(skb);
- }
- }
-
- ace_init_cleanup(dev);
- free_netdev(dev);
-}
-
-static struct pci_driver acenic_pci_driver = {
- .name = "acenic",
- .id_table = acenic_pci_tbl,
- .probe = acenic_probe_one,
- .remove = acenic_remove_one,
-};
-
-static void ace_free_descriptors(struct net_device *dev)
-{
- struct ace_private *ap = netdev_priv(dev);
- int size;
-
- if (ap->rx_std_ring != NULL) {
- size = (sizeof(struct rx_desc) *
- (RX_STD_RING_ENTRIES +
- RX_JUMBO_RING_ENTRIES +
- RX_MINI_RING_ENTRIES +
- RX_RETURN_RING_ENTRIES));
- dma_free_coherent(&ap->pdev->dev, size, ap->rx_std_ring,
- ap->rx_ring_base_dma);
- ap->rx_std_ring = NULL;
- ap->rx_jumbo_ring = NULL;
- ap->rx_mini_ring = NULL;
- ap->rx_return_ring = NULL;
- }
- if (ap->evt_ring != NULL) {
- size = (sizeof(struct event) * EVT_RING_ENTRIES);
- dma_free_coherent(&ap->pdev->dev, size, ap->evt_ring,
- ap->evt_ring_dma);
- ap->evt_ring = NULL;
- }
- if (ap->tx_ring != NULL && !ACE_IS_TIGON_I(ap)) {
- size = (sizeof(struct tx_desc) * MAX_TX_RING_ENTRIES);
- dma_free_coherent(&ap->pdev->dev, size, ap->tx_ring,
- ap->tx_ring_dma);
- }
- ap->tx_ring = NULL;
-
- if (ap->evt_prd != NULL) {
- dma_free_coherent(&ap->pdev->dev, sizeof(u32),
- (void *)ap->evt_prd, ap->evt_prd_dma);
- ap->evt_prd = NULL;
- }
- if (ap->rx_ret_prd != NULL) {
- dma_free_coherent(&ap->pdev->dev, sizeof(u32),
- (void *)ap->rx_ret_prd, ap->rx_ret_prd_dma);
- ap->rx_ret_prd = NULL;
- }
- if (ap->tx_csm != NULL) {
- dma_free_coherent(&ap->pdev->dev, sizeof(u32),
- (void *)ap->tx_csm, ap->tx_csm_dma);
- ap->tx_csm = NULL;
- }
-}
-
-
-static int ace_allocate_descriptors(struct net_device *dev)
-{
- struct ace_private *ap = netdev_priv(dev);
- int size;
-
- size = (sizeof(struct rx_desc) *
- (RX_STD_RING_ENTRIES +
- RX_JUMBO_RING_ENTRIES +
- RX_MINI_RING_ENTRIES +
- RX_RETURN_RING_ENTRIES));
-
- ap->rx_std_ring = dma_alloc_coherent(&ap->pdev->dev, size,
- &ap->rx_ring_base_dma, GFP_KERNEL);
- if (ap->rx_std_ring == NULL)
- goto fail;
-
- ap->rx_jumbo_ring = ap->rx_std_ring + RX_STD_RING_ENTRIES;
- ap->rx_mini_ring = ap->rx_jumbo_ring + RX_JUMBO_RING_ENTRIES;
- ap->rx_return_ring = ap->rx_mini_ring + RX_MINI_RING_ENTRIES;
-
- size = (sizeof(struct event) * EVT_RING_ENTRIES);
-
- ap->evt_ring = dma_alloc_coherent(&ap->pdev->dev, size,
- &ap->evt_ring_dma, GFP_KERNEL);
-
- if (ap->evt_ring == NULL)
- goto fail;
-
- /*
- * Only allocate a host TX ring for the Tigon II, the Tigon I
- * has to use PCI registers for this ;-(
- */
- if (!ACE_IS_TIGON_I(ap)) {
- size = (sizeof(struct tx_desc) * MAX_TX_RING_ENTRIES);
-
- ap->tx_ring = dma_alloc_coherent(&ap->pdev->dev, size,
- &ap->tx_ring_dma, GFP_KERNEL);
-
- if (ap->tx_ring == NULL)
- goto fail;
- }
-
- ap->evt_prd = dma_alloc_coherent(&ap->pdev->dev, sizeof(u32),
- &ap->evt_prd_dma, GFP_KERNEL);
- if (ap->evt_prd == NULL)
- goto fail;
-
- ap->rx_ret_prd = dma_alloc_coherent(&ap->pdev->dev, sizeof(u32),
- &ap->rx_ret_prd_dma, GFP_KERNEL);
- if (ap->rx_ret_prd == NULL)
- goto fail;
-
- ap->tx_csm = dma_alloc_coherent(&ap->pdev->dev, sizeof(u32),
- &ap->tx_csm_dma, GFP_KERNEL);
- if (ap->tx_csm == NULL)
- goto fail;
-
- return 0;
-
-fail:
- /* Clean up. */
- ace_init_cleanup(dev);
- return 1;
-}
-
-
-/*
- * Generic cleanup handling data allocated during init. Used when the
- * module is unloaded or if an error occurs during initialization
- */
-static void ace_init_cleanup(struct net_device *dev)
-{
- struct ace_private *ap;
-
- ap = netdev_priv(dev);
-
- ace_free_descriptors(dev);
-
- if (ap->info)
- dma_free_coherent(&ap->pdev->dev, sizeof(struct ace_info),
- ap->info, ap->info_dma);
- kfree(ap->skb);
- kfree(ap->trace_buf);
-
- if (dev->irq)
- free_irq(dev->irq, dev);
-
- iounmap(ap->regs);
-}
-
-
-/*
- * Commands are considered to be slow.
- */
-static inline void ace_issue_cmd(struct ace_regs __iomem *regs, struct cmd *cmd)
-{
- u32 idx;
-
- idx = readl(®s->CmdPrd);
-
- writel(*(u32 *)(cmd), ®s->CmdRng[idx]);
- idx = (idx + 1) % CMD_RING_ENTRIES;
-
- writel(idx, ®s->CmdPrd);
-}
-
-
-static int ace_init(struct net_device *dev)
-{
- struct ace_private *ap;
- struct ace_regs __iomem *regs;
- struct ace_info *info = NULL;
- struct pci_dev *pdev;
- unsigned long myjif;
- u64 tmp_ptr;
- u32 tig_ver, mac1, mac2, tmp, pci_state;
- int board_idx, ecode = 0;
- short i;
- unsigned char cache_size;
- u8 addr[ETH_ALEN];
-
- ap = netdev_priv(dev);
- regs = ap->regs;
-
- board_idx = ap->board_idx;
-
- /*
- * aman@sgi.com - its useful to do a NIC reset here to
- * address the `Firmware not running' problem subsequent
- * to any crashes involving the NIC
- */
- writel(HW_RESET | (HW_RESET << 24), ®s->HostCtrl);
- readl(®s->HostCtrl); /* PCI write posting */
- udelay(5);
-
- /*
- * Don't access any other registers before this point!
- */
-#ifdef __BIG_ENDIAN
- /*
- * This will most likely need BYTE_SWAP once we switch
- * to using __raw_writel()
- */
- writel((WORD_SWAP | CLR_INT | ((WORD_SWAP | CLR_INT) << 24)),
- ®s->HostCtrl);
-#else
- writel((CLR_INT | WORD_SWAP | ((CLR_INT | WORD_SWAP) << 24)),
- ®s->HostCtrl);
-#endif
- readl(®s->HostCtrl); /* PCI write posting */
-
- /*
- * Stop the NIC CPU and clear pending interrupts
- */
- writel(readl(®s->CpuCtrl) | CPU_HALT, ®s->CpuCtrl);
- readl(®s->CpuCtrl); /* PCI write posting */
- writel(0, ®s->Mb0Lo);
-
- tig_ver = readl(®s->HostCtrl) >> 28;
-
- switch(tig_ver){
-#ifndef CONFIG_ACENIC_OMIT_TIGON_I
- case 4:
- case 5:
- printk(KERN_INFO " Tigon I (Rev. %i), Firmware: %i.%i.%i, ",
- tig_ver, ap->firmware_major, ap->firmware_minor,
- ap->firmware_fix);
- writel(0, ®s->LocalCtrl);
- ap->version = 1;
- ap->tx_ring_entries = TIGON_I_TX_RING_ENTRIES;
- break;
-#endif
- case 6:
- printk(KERN_INFO " Tigon II (Rev. %i), Firmware: %i.%i.%i, ",
- tig_ver, ap->firmware_major, ap->firmware_minor,
- ap->firmware_fix);
- writel(readl(®s->CpuBCtrl) | CPU_HALT, ®s->CpuBCtrl);
- readl(®s->CpuBCtrl); /* PCI write posting */
- /*
- * The SRAM bank size does _not_ indicate the amount
- * of memory on the card, it controls the _bank_ size!
- * Ie. a 1MB AceNIC will have two banks of 512KB.
- */
- writel(SRAM_BANK_512K, ®s->LocalCtrl);
- writel(SYNC_SRAM_TIMING, ®s->MiscCfg);
- ap->version = 2;
- ap->tx_ring_entries = MAX_TX_RING_ENTRIES;
- break;
- default:
- printk(KERN_WARNING " Unsupported Tigon version detected "
- "(%i)\n", tig_ver);
- ecode = -ENODEV;
- goto init_error;
- }
-
- /*
- * ModeStat _must_ be set after the SRAM settings as this change
- * seems to corrupt the ModeStat and possible other registers.
- * The SRAM settings survive resets and setting it to the same
- * value a second time works as well. This is what caused the
- * `Firmware not running' problem on the Tigon II.
- */
-#ifdef __BIG_ENDIAN
- writel(ACE_BYTE_SWAP_DMA | ACE_WARN | ACE_FATAL | ACE_BYTE_SWAP_BD |
- ACE_WORD_SWAP_BD | ACE_NO_JUMBO_FRAG, ®s->ModeStat);
-#else
- writel(ACE_BYTE_SWAP_DMA | ACE_WARN | ACE_FATAL |
- ACE_WORD_SWAP_BD | ACE_NO_JUMBO_FRAG, ®s->ModeStat);
-#endif
- readl(®s->ModeStat); /* PCI write posting */
-
- mac1 = 0;
- for(i = 0; i < 4; i++) {
- int t;
-
- mac1 = mac1 << 8;
- t = read_eeprom_byte(dev, 0x8c+i);
- if (t < 0) {
- ecode = -EIO;
- goto init_error;
- } else
- mac1 |= (t & 0xff);
- }
- mac2 = 0;
- for(i = 4; i < 8; i++) {
- int t;
-
- mac2 = mac2 << 8;
- t = read_eeprom_byte(dev, 0x8c+i);
- if (t < 0) {
- ecode = -EIO;
- goto init_error;
- } else
- mac2 |= (t & 0xff);
- }
-
- writel(mac1, ®s->MacAddrHi);
- writel(mac2, ®s->MacAddrLo);
-
- addr[0] = (mac1 >> 8) & 0xff;
- addr[1] = mac1 & 0xff;
- addr[2] = (mac2 >> 24) & 0xff;
- addr[3] = (mac2 >> 16) & 0xff;
- addr[4] = (mac2 >> 8) & 0xff;
- addr[5] = mac2 & 0xff;
- eth_hw_addr_set(dev, addr);
-
- printk("MAC: %pM\n", dev->dev_addr);
-
- /*
- * Looks like this is necessary to deal with on all architectures,
- * even this %$#%$# N440BX Intel based thing doesn't get it right.
- * Ie. having two NICs in the machine, one will have the cache
- * line set at boot time, the other will not.
- */
- pdev = ap->pdev;
- pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_size);
- cache_size <<= 2;
- if (cache_size != SMP_CACHE_BYTES) {
- printk(KERN_INFO " PCI cache line size set incorrectly "
- "(%i bytes) by BIOS/FW, ", cache_size);
- if (cache_size > SMP_CACHE_BYTES)
- printk("expecting %i\n", SMP_CACHE_BYTES);
- else {
- printk("correcting to %i\n", SMP_CACHE_BYTES);
- pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
- SMP_CACHE_BYTES >> 2);
- }
- }
-
- pci_state = readl(®s->PciState);
- printk(KERN_INFO " PCI bus width: %i bits, speed: %iMHz, "
- "latency: %i clks\n",
- (pci_state & PCI_32BIT) ? 32 : 64,
- (pci_state & PCI_66MHZ) ? 66 : 33,
- ap->pci_latency);
-
- /*
- * Set the max DMA transfer size. Seems that for most systems
- * the performance is better when no MAX parameter is
- * set. However for systems enabling PCI write and invalidate,
- * DMA writes must be set to the L1 cache line size to get
- * optimal performance.
- *
- * The default is now to turn the PCI write and invalidate off
- * - that is what Alteon does for NT.
- */
- tmp = READ_CMD_MEM | WRITE_CMD_MEM;
- if (ap->version >= 2) {
- tmp |= (MEM_READ_MULTIPLE | (pci_state & PCI_66MHZ));
- /*
- * Tuning parameters only supported for 8 cards
- */
- if (board_idx == BOARD_IDX_OVERFLOW ||
- dis_pci_mem_inval[board_idx]) {
- if (ap->pci_command & PCI_COMMAND_INVALIDATE) {
- ap->pci_command &= ~PCI_COMMAND_INVALIDATE;
- pci_write_config_word(pdev, PCI_COMMAND,
- ap->pci_command);
- printk(KERN_INFO " Disabling PCI memory "
- "write and invalidate\n");
- }
- } else if (ap->pci_command & PCI_COMMAND_INVALIDATE) {
- printk(KERN_INFO " PCI memory write & invalidate "
- "enabled by BIOS, enabling counter measures\n");
-
- switch(SMP_CACHE_BYTES) {
- case 16:
- tmp |= DMA_WRITE_MAX_16;
- break;
- case 32:
- tmp |= DMA_WRITE_MAX_32;
- break;
- case 64:
- tmp |= DMA_WRITE_MAX_64;
- break;
- case 128:
- tmp |= DMA_WRITE_MAX_128;
- break;
- default:
- printk(KERN_INFO " Cache line size %i not "
- "supported, PCI write and invalidate "
- "disabled\n", SMP_CACHE_BYTES);
- ap->pci_command &= ~PCI_COMMAND_INVALIDATE;
- pci_write_config_word(pdev, PCI_COMMAND,
- ap->pci_command);
- }
- }
- }
-
-#ifdef __sparc__
- /*
- * On this platform, we know what the best dma settings
- * are. We use 64-byte maximum bursts, because if we
- * burst larger than the cache line size (or even cross
- * a 64byte boundary in a single burst) the UltraSparc
- * PCI controller will disconnect at 64-byte multiples.
- *
- * Read-multiple will be properly enabled above, and when
- * set will give the PCI controller proper hints about
- * prefetching.
- */
- tmp &= ~DMA_READ_WRITE_MASK;
- tmp |= DMA_READ_MAX_64;
- tmp |= DMA_WRITE_MAX_64;
-#endif
-#ifdef __alpha__
- tmp &= ~DMA_READ_WRITE_MASK;
- tmp |= DMA_READ_MAX_128;
- /*
- * All the docs say MUST NOT. Well, I did.
- * Nothing terrible happens, if we load wrong size.
- * Bit w&i still works better!
- */
- tmp |= DMA_WRITE_MAX_128;
-#endif
- writel(tmp, ®s->PciState);
-
-#if 0
- /*
- * The Host PCI bus controller driver has to set FBB.
- * If all devices on that PCI bus support FBB, then the controller
- * can enable FBB support in the Host PCI Bus controller (or on
- * the PCI-PCI bridge if that applies).
- * -ggg
- */
- /*
- * I have received reports from people having problems when this
- * bit is enabled.
- */
- if (!(ap->pci_command & PCI_COMMAND_FAST_BACK)) {
- printk(KERN_INFO " Enabling PCI Fast Back to Back\n");
- ap->pci_command |= PCI_COMMAND_FAST_BACK;
- pci_write_config_word(pdev, PCI_COMMAND, ap->pci_command);
- }
-#endif
-
- /*
- * Configure DMA attributes.
- */
- if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
- ecode = -ENODEV;
- goto init_error;
- }
-
- /*
- * Initialize the generic info block and the command+event rings
- * and the control blocks for the transmit and receive rings
- * as they need to be setup once and for all.
- */
- if (!(info = dma_alloc_coherent(&ap->pdev->dev, sizeof(struct ace_info),
- &ap->info_dma, GFP_KERNEL))) {
- ecode = -EAGAIN;
- goto init_error;
- }
- ap->info = info;
-
- /*
- * Get the memory for the skb rings.
- */
- if (!(ap->skb = kzalloc_obj(struct ace_skb))) {
- ecode = -EAGAIN;
- goto init_error;
- }
-
- ecode = request_irq(pdev->irq, ace_interrupt, IRQF_SHARED,
- DRV_NAME, dev);
- if (ecode) {
- printk(KERN_WARNING "%s: Requested IRQ %d is busy\n",
- DRV_NAME, pdev->irq);
- goto init_error;
- } else
- dev->irq = pdev->irq;
-
-#ifdef INDEX_DEBUG
- spin_lock_init(&ap->debug_lock);
- ap->last_tx = ACE_TX_RING_ENTRIES(ap) - 1;
- ap->last_std_rx = 0;
- ap->last_mini_rx = 0;
-#endif
-
- ecode = ace_load_firmware(dev);
- if (ecode)
- goto init_error;
-
- ap->fw_running = 0;
-
- tmp_ptr = ap->info_dma;
- writel(tmp_ptr >> 32, ®s->InfoPtrHi);
- writel(tmp_ptr & 0xffffffff, ®s->InfoPtrLo);
-
- memset(ap->evt_ring, 0, EVT_RING_ENTRIES * sizeof(struct event));
-
- set_aceaddr(&info->evt_ctrl.rngptr, ap->evt_ring_dma);
- info->evt_ctrl.flags = 0;
-
- *(ap->evt_prd) = 0;
- wmb();
- set_aceaddr(&info->evt_prd_ptr, ap->evt_prd_dma);
- writel(0, ®s->EvtCsm);
-
- set_aceaddr(&info->cmd_ctrl.rngptr, 0x100);
- info->cmd_ctrl.flags = 0;
- info->cmd_ctrl.max_len = 0;
-
- for (i = 0; i < CMD_RING_ENTRIES; i++)
- writel(0, ®s->CmdRng[i]);
-
- writel(0, ®s->CmdPrd);
- writel(0, ®s->CmdCsm);
-
- tmp_ptr = ap->info_dma;
- tmp_ptr += (unsigned long) &(((struct ace_info *)0)->s.stats);
- set_aceaddr(&info->stats2_ptr, (dma_addr_t) tmp_ptr);
-
- set_aceaddr(&info->rx_std_ctrl.rngptr, ap->rx_ring_base_dma);
- info->rx_std_ctrl.max_len = ACE_STD_BUFSIZE;
- info->rx_std_ctrl.flags =
- RCB_FLG_TCP_UDP_SUM | RCB_FLG_NO_PSEUDO_HDR | RCB_FLG_VLAN_ASSIST;
-
- memset(ap->rx_std_ring, 0,
- RX_STD_RING_ENTRIES * sizeof(struct rx_desc));
-
- for (i = 0; i < RX_STD_RING_ENTRIES; i++)
- ap->rx_std_ring[i].flags = BD_FLG_TCP_UDP_SUM;
-
- ap->rx_std_skbprd = 0;
- atomic_set(&ap->cur_rx_bufs, 0);
-
- set_aceaddr(&info->rx_jumbo_ctrl.rngptr,
- (ap->rx_ring_base_dma +
- (sizeof(struct rx_desc) * RX_STD_RING_ENTRIES)));
- info->rx_jumbo_ctrl.max_len = 0;
- info->rx_jumbo_ctrl.flags =
- RCB_FLG_TCP_UDP_SUM | RCB_FLG_NO_PSEUDO_HDR | RCB_FLG_VLAN_ASSIST;
-
- memset(ap->rx_jumbo_ring, 0,
- RX_JUMBO_RING_ENTRIES * sizeof(struct rx_desc));
-
- for (i = 0; i < RX_JUMBO_RING_ENTRIES; i++)
- ap->rx_jumbo_ring[i].flags = BD_FLG_TCP_UDP_SUM | BD_FLG_JUMBO;
-
- ap->rx_jumbo_skbprd = 0;
- atomic_set(&ap->cur_jumbo_bufs, 0);
-
- memset(ap->rx_mini_ring, 0,
- RX_MINI_RING_ENTRIES * sizeof(struct rx_desc));
-
- if (ap->version >= 2) {
- set_aceaddr(&info->rx_mini_ctrl.rngptr,
- (ap->rx_ring_base_dma +
- (sizeof(struct rx_desc) *
- (RX_STD_RING_ENTRIES +
- RX_JUMBO_RING_ENTRIES))));
- info->rx_mini_ctrl.max_len = ACE_MINI_SIZE;
- info->rx_mini_ctrl.flags =
- RCB_FLG_TCP_UDP_SUM|RCB_FLG_NO_PSEUDO_HDR|RCB_FLG_VLAN_ASSIST;
-
- for (i = 0; i < RX_MINI_RING_ENTRIES; i++)
- ap->rx_mini_ring[i].flags =
- BD_FLG_TCP_UDP_SUM | BD_FLG_MINI;
- } else {
- set_aceaddr(&info->rx_mini_ctrl.rngptr, 0);
- info->rx_mini_ctrl.flags = RCB_FLG_RNG_DISABLE;
- info->rx_mini_ctrl.max_len = 0;
- }
-
- ap->rx_mini_skbprd = 0;
- atomic_set(&ap->cur_mini_bufs, 0);
-
- set_aceaddr(&info->rx_return_ctrl.rngptr,
- (ap->rx_ring_base_dma +
- (sizeof(struct rx_desc) *
- (RX_STD_RING_ENTRIES +
- RX_JUMBO_RING_ENTRIES +
- RX_MINI_RING_ENTRIES))));
- info->rx_return_ctrl.flags = 0;
- info->rx_return_ctrl.max_len = RX_RETURN_RING_ENTRIES;
-
- memset(ap->rx_return_ring, 0,
- RX_RETURN_RING_ENTRIES * sizeof(struct rx_desc));
-
- set_aceaddr(&info->rx_ret_prd_ptr, ap->rx_ret_prd_dma);
- *(ap->rx_ret_prd) = 0;
-
- writel(TX_RING_BASE, ®s->WinBase);
-
- if (ACE_IS_TIGON_I(ap)) {
- ap->tx_ring = (__force struct tx_desc *) regs->Window;
- for (i = 0; i < (TIGON_I_TX_RING_ENTRIES
- * sizeof(struct tx_desc)) / sizeof(u32); i++)
- writel(0, (__force void __iomem *)ap->tx_ring + i * 4);
-
- set_aceaddr(&info->tx_ctrl.rngptr, TX_RING_BASE);
- } else {
- memset(ap->tx_ring, 0,
- MAX_TX_RING_ENTRIES * sizeof(struct tx_desc));
-
- set_aceaddr(&info->tx_ctrl.rngptr, ap->tx_ring_dma);
- }
-
- info->tx_ctrl.max_len = ACE_TX_RING_ENTRIES(ap);
- tmp = RCB_FLG_TCP_UDP_SUM | RCB_FLG_NO_PSEUDO_HDR | RCB_FLG_VLAN_ASSIST;
-
- /*
- * The Tigon I does not like having the TX ring in host memory ;-(
- */
- if (!ACE_IS_TIGON_I(ap))
- tmp |= RCB_FLG_TX_HOST_RING;
-#if TX_COAL_INTS_ONLY
- tmp |= RCB_FLG_COAL_INT_ONLY;
-#endif
- info->tx_ctrl.flags = tmp;
-
- set_aceaddr(&info->tx_csm_ptr, ap->tx_csm_dma);
-
- /*
- * Potential item for tuning parameter
- */
-#if 0 /* NO */
- writel(DMA_THRESH_16W, ®s->DmaReadCfg);
- writel(DMA_THRESH_16W, ®s->DmaWriteCfg);
-#else
- writel(DMA_THRESH_8W, ®s->DmaReadCfg);
- writel(DMA_THRESH_8W, ®s->DmaWriteCfg);
-#endif
-
- writel(0, ®s->MaskInt);
- writel(1, ®s->IfIdx);
-#if 0
- /*
- * McKinley boxes do not like us fiddling with AssistState
- * this early
- */
- writel(1, ®s->AssistState);
-#endif
-
- writel(DEF_STAT, ®s->TuneStatTicks);
- writel(DEF_TRACE, ®s->TuneTrace);
-
- ace_set_rxtx_parms(dev, 0);
-
- if (board_idx == BOARD_IDX_OVERFLOW) {
- printk(KERN_WARNING "%s: more than %i NICs detected, "
- "ignoring module parameters!\n",
- ap->name, ACE_MAX_MOD_PARMS);
- } else if (board_idx >= 0) {
- if (tx_coal_tick[board_idx])
- writel(tx_coal_tick[board_idx],
- ®s->TuneTxCoalTicks);
- if (max_tx_desc[board_idx])
- writel(max_tx_desc[board_idx], ®s->TuneMaxTxDesc);
-
- if (rx_coal_tick[board_idx])
- writel(rx_coal_tick[board_idx],
- ®s->TuneRxCoalTicks);
- if (max_rx_desc[board_idx])
- writel(max_rx_desc[board_idx], ®s->TuneMaxRxDesc);
-
- if (trace[board_idx])
- writel(trace[board_idx], ®s->TuneTrace);
-
- if ((tx_ratio[board_idx] > 0) && (tx_ratio[board_idx] < 64))
- writel(tx_ratio[board_idx], ®s->TxBufRat);
- }
-
- /*
- * Default link parameters
- */
- tmp = LNK_ENABLE | LNK_FULL_DUPLEX | LNK_1000MB | LNK_100MB |
- LNK_10MB | LNK_RX_FLOW_CTL_Y | LNK_NEG_FCTL | LNK_NEGOTIATE;
- if(ap->version >= 2)
- tmp |= LNK_TX_FLOW_CTL_Y;
-
- /*
- * Override link default parameters
- */
- if ((board_idx >= 0) && link_state[board_idx]) {
- int option = link_state[board_idx];
-
- tmp = LNK_ENABLE;
-
- if (option & 0x01) {
- printk(KERN_INFO "%s: Setting half duplex link\n",
- ap->name);
- tmp &= ~LNK_FULL_DUPLEX;
- }
- if (option & 0x02)
- tmp &= ~LNK_NEGOTIATE;
- if (option & 0x10)
- tmp |= LNK_10MB;
- if (option & 0x20)
- tmp |= LNK_100MB;
- if (option & 0x40)
- tmp |= LNK_1000MB;
- if ((option & 0x70) == 0) {
- printk(KERN_WARNING "%s: No media speed specified, "
- "forcing auto negotiation\n", ap->name);
- tmp |= LNK_NEGOTIATE | LNK_1000MB |
- LNK_100MB | LNK_10MB;
- }
- if ((option & 0x100) == 0)
- tmp |= LNK_NEG_FCTL;
- else
- printk(KERN_INFO "%s: Disabling flow control "
- "negotiation\n", ap->name);
- if (option & 0x200)
- tmp |= LNK_RX_FLOW_CTL_Y;
- if ((option & 0x400) && (ap->version >= 2)) {
- printk(KERN_INFO "%s: Enabling TX flow control\n",
- ap->name);
- tmp |= LNK_TX_FLOW_CTL_Y;
- }
- }
-
- ap->link = tmp;
- writel(tmp, ®s->TuneLink);
- if (ap->version >= 2)
- writel(tmp, ®s->TuneFastLink);
-
- writel(ap->firmware_start, ®s->Pc);
-
- writel(0, ®s->Mb0Lo);
-
- /*
- * Set tx_csm before we start receiving interrupts, otherwise
- * the interrupt handler might think it is supposed to process
- * tx ints before we are up and running, which may cause a null
- * pointer access in the int handler.
- */
- ap->cur_rx = 0;
- ap->tx_prd = *(ap->tx_csm) = ap->tx_ret_csm = 0;
-
- wmb();
- ace_set_txprd(regs, ap, 0);
- writel(0, ®s->RxRetCsm);
-
- /*
- * Enable DMA engine now.
- * If we do this sooner, Mckinley box pukes.
- * I assume it's because Tigon II DMA engine wants to check
- * *something* even before the CPU is started.
- */
- writel(1, ®s->AssistState); /* enable DMA */
-
- /*
- * Start the NIC CPU
- */
- writel(readl(®s->CpuCtrl) & ~(CPU_HALT|CPU_TRACE), ®s->CpuCtrl);
- readl(®s->CpuCtrl);
-
- /*
- * Wait for the firmware to spin up - max 3 seconds.
- */
- myjif = jiffies + 3 * HZ;
- while (time_before(jiffies, myjif) && !ap->fw_running)
- cpu_relax();
-
- if (!ap->fw_running) {
- printk(KERN_ERR "%s: Firmware NOT running!\n", ap->name);
-
- ace_dump_trace(ap);
- writel(readl(®s->CpuCtrl) | CPU_HALT, ®s->CpuCtrl);
- readl(®s->CpuCtrl);
-
- /* aman@sgi.com - account for badly behaving firmware/NIC:
- * - have observed that the NIC may continue to generate
- * interrupts for some reason; attempt to stop it - halt
- * second CPU for Tigon II cards, and also clear Mb0
- * - if we're a module, we'll fail to load if this was
- * the only GbE card in the system => if the kernel does
- * see an interrupt from the NIC, code to handle it is
- * gone and OOps! - so free_irq also
- */
- if (ap->version >= 2)
- writel(readl(®s->CpuBCtrl) | CPU_HALT,
- ®s->CpuBCtrl);
- writel(0, ®s->Mb0Lo);
- readl(®s->Mb0Lo);
-
- ecode = -EBUSY;
- goto init_error;
- }
-
- /*
- * We load the ring here as there seem to be no way to tell the
- * firmware to wipe the ring without re-initializing it.
- */
- if (!test_and_set_bit(0, &ap->std_refill_busy))
- ace_load_std_rx_ring(dev, RX_RING_SIZE);
- else
- printk(KERN_ERR "%s: Someone is busy refilling the RX ring\n",
- ap->name);
- if (ap->version >= 2) {
- if (!test_and_set_bit(0, &ap->mini_refill_busy))
- ace_load_mini_rx_ring(dev, RX_MINI_SIZE);
- else
- printk(KERN_ERR "%s: Someone is busy refilling "
- "the RX mini ring\n", ap->name);
- }
- return 0;
-
- init_error:
- ace_init_cleanup(dev);
- return ecode;
-}
-
-
-static void ace_set_rxtx_parms(struct net_device *dev, int jumbo)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- int board_idx = ap->board_idx;
-
- if (board_idx >= 0) {
- if (!jumbo) {
- if (!tx_coal_tick[board_idx])
- writel(DEF_TX_COAL, ®s->TuneTxCoalTicks);
- if (!max_tx_desc[board_idx])
- writel(DEF_TX_MAX_DESC, ®s->TuneMaxTxDesc);
- if (!rx_coal_tick[board_idx])
- writel(DEF_RX_COAL, ®s->TuneRxCoalTicks);
- if (!max_rx_desc[board_idx])
- writel(DEF_RX_MAX_DESC, ®s->TuneMaxRxDesc);
- if (!tx_ratio[board_idx])
- writel(DEF_TX_RATIO, ®s->TxBufRat);
- } else {
- if (!tx_coal_tick[board_idx])
- writel(DEF_JUMBO_TX_COAL,
- ®s->TuneTxCoalTicks);
- if (!max_tx_desc[board_idx])
- writel(DEF_JUMBO_TX_MAX_DESC,
- ®s->TuneMaxTxDesc);
- if (!rx_coal_tick[board_idx])
- writel(DEF_JUMBO_RX_COAL,
- ®s->TuneRxCoalTicks);
- if (!max_rx_desc[board_idx])
- writel(DEF_JUMBO_RX_MAX_DESC,
- ®s->TuneMaxRxDesc);
- if (!tx_ratio[board_idx])
- writel(DEF_JUMBO_TX_RATIO, ®s->TxBufRat);
- }
- }
-}
-
-
-static void ace_watchdog(struct net_device *data, unsigned int txqueue)
-{
- struct net_device *dev = data;
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
-
- /*
- * We haven't received a stats update event for more than 2.5
- * seconds and there is data in the transmit queue, thus we
- * assume the card is stuck.
- */
- if (*ap->tx_csm != ap->tx_ret_csm) {
- printk(KERN_WARNING "%s: Transmitter is stuck, %08x\n",
- dev->name, (unsigned int)readl(®s->HostCtrl));
- /* This can happen due to ieee flow control. */
- } else {
- printk(KERN_DEBUG "%s: BUG... transmitter died. Kicking it.\n",
- dev->name);
-#if 0
- netif_wake_queue(dev);
-#endif
- }
-}
-
-
-static void ace_bh_work(struct work_struct *work)
-{
- struct ace_private *ap = from_work(ap, work, ace_bh_work);
- struct net_device *dev = ap->ndev;
- int cur_size;
-
- cur_size = atomic_read(&ap->cur_rx_bufs);
- if ((cur_size < RX_LOW_STD_THRES) &&
- !test_and_set_bit(0, &ap->std_refill_busy)) {
-#ifdef DEBUG
- printk("refilling buffers (current %i)\n", cur_size);
-#endif
- ace_load_std_rx_ring(dev, RX_RING_SIZE - cur_size);
- }
-
- if (ap->version >= 2) {
- cur_size = atomic_read(&ap->cur_mini_bufs);
- if ((cur_size < RX_LOW_MINI_THRES) &&
- !test_and_set_bit(0, &ap->mini_refill_busy)) {
-#ifdef DEBUG
- printk("refilling mini buffers (current %i)\n",
- cur_size);
-#endif
- ace_load_mini_rx_ring(dev, RX_MINI_SIZE - cur_size);
- }
- }
-
- cur_size = atomic_read(&ap->cur_jumbo_bufs);
- if (ap->jumbo && (cur_size < RX_LOW_JUMBO_THRES) &&
- !test_and_set_bit(0, &ap->jumbo_refill_busy)) {
-#ifdef DEBUG
- printk("refilling jumbo buffers (current %i)\n", cur_size);
-#endif
- ace_load_jumbo_rx_ring(dev, RX_JUMBO_SIZE - cur_size);
- }
- ap->bh_work_pending = 0;
-}
-
-
-/*
- * Copy the contents of the NIC's trace buffer to kernel memory.
- */
-static void ace_dump_trace(struct ace_private *ap)
-{
-#if 0
- if (!ap->trace_buf)
- if (!(ap->trace_buf = kmalloc(ACE_TRACE_SIZE, GFP_KERNEL)))
- return;
-#endif
-}
-
-
-/*
- * Load the standard rx ring.
- *
- * Loading rings is safe without holding the spin lock since this is
- * done only before the device is enabled, thus no interrupts are
- * generated and by the interrupt handler/bh handler.
- */
-static void ace_load_std_rx_ring(struct net_device *dev, int nr_bufs)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- short i, idx;
-
-
- prefetchw(&ap->cur_rx_bufs);
-
- idx = ap->rx_std_skbprd;
-
- for (i = 0; i < nr_bufs; i++) {
- struct sk_buff *skb;
- struct rx_desc *rd;
- dma_addr_t mapping;
-
- skb = netdev_alloc_skb_ip_align(dev, ACE_STD_BUFSIZE);
- if (!skb)
- break;
-
- mapping = dma_map_page(&ap->pdev->dev,
- virt_to_page(skb->data),
- offset_in_page(skb->data),
- ACE_STD_BUFSIZE, DMA_FROM_DEVICE);
- ap->skb->rx_std_skbuff[idx].skb = skb;
- dma_unmap_addr_set(&ap->skb->rx_std_skbuff[idx],
- mapping, mapping);
-
- rd = &ap->rx_std_ring[idx];
- set_aceaddr(&rd->addr, mapping);
- rd->size = ACE_STD_BUFSIZE;
- rd->idx = idx;
- idx = (idx + 1) % RX_STD_RING_ENTRIES;
- }
-
- if (!i)
- goto error_out;
-
- atomic_add(i, &ap->cur_rx_bufs);
- ap->rx_std_skbprd = idx;
-
- if (ACE_IS_TIGON_I(ap)) {
- struct cmd cmd;
- cmd.evt = C_SET_RX_PRD_IDX;
- cmd.code = 0;
- cmd.idx = ap->rx_std_skbprd;
- ace_issue_cmd(regs, &cmd);
- } else {
- writel(idx, ®s->RxStdPrd);
- wmb();
- }
-
- out:
- clear_bit(0, &ap->std_refill_busy);
- return;
-
- error_out:
- printk(KERN_INFO "Out of memory when allocating "
- "standard receive buffers\n");
- goto out;
-}
-
-
-static void ace_load_mini_rx_ring(struct net_device *dev, int nr_bufs)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- short i, idx;
-
- prefetchw(&ap->cur_mini_bufs);
-
- idx = ap->rx_mini_skbprd;
- for (i = 0; i < nr_bufs; i++) {
- struct sk_buff *skb;
- struct rx_desc *rd;
- dma_addr_t mapping;
-
- skb = netdev_alloc_skb_ip_align(dev, ACE_MINI_BUFSIZE);
- if (!skb)
- break;
-
- mapping = dma_map_page(&ap->pdev->dev,
- virt_to_page(skb->data),
- offset_in_page(skb->data),
- ACE_MINI_BUFSIZE, DMA_FROM_DEVICE);
- ap->skb->rx_mini_skbuff[idx].skb = skb;
- dma_unmap_addr_set(&ap->skb->rx_mini_skbuff[idx],
- mapping, mapping);
-
- rd = &ap->rx_mini_ring[idx];
- set_aceaddr(&rd->addr, mapping);
- rd->size = ACE_MINI_BUFSIZE;
- rd->idx = idx;
- idx = (idx + 1) % RX_MINI_RING_ENTRIES;
- }
-
- if (!i)
- goto error_out;
-
- atomic_add(i, &ap->cur_mini_bufs);
-
- ap->rx_mini_skbprd = idx;
-
- writel(idx, ®s->RxMiniPrd);
- wmb();
-
- out:
- clear_bit(0, &ap->mini_refill_busy);
- return;
- error_out:
- printk(KERN_INFO "Out of memory when allocating "
- "mini receive buffers\n");
- goto out;
-}
-
-
-/*
- * Load the jumbo rx ring, this may happen at any time if the MTU
- * is changed to a value > 1500.
- */
-static void ace_load_jumbo_rx_ring(struct net_device *dev, int nr_bufs)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- short i, idx;
-
- idx = ap->rx_jumbo_skbprd;
-
- for (i = 0; i < nr_bufs; i++) {
- struct sk_buff *skb;
- struct rx_desc *rd;
- dma_addr_t mapping;
-
- skb = netdev_alloc_skb_ip_align(dev, ACE_JUMBO_BUFSIZE);
- if (!skb)
- break;
-
- mapping = dma_map_page(&ap->pdev->dev,
- virt_to_page(skb->data),
- offset_in_page(skb->data),
- ACE_JUMBO_BUFSIZE, DMA_FROM_DEVICE);
- ap->skb->rx_jumbo_skbuff[idx].skb = skb;
- dma_unmap_addr_set(&ap->skb->rx_jumbo_skbuff[idx],
- mapping, mapping);
-
- rd = &ap->rx_jumbo_ring[idx];
- set_aceaddr(&rd->addr, mapping);
- rd->size = ACE_JUMBO_BUFSIZE;
- rd->idx = idx;
- idx = (idx + 1) % RX_JUMBO_RING_ENTRIES;
- }
-
- if (!i)
- goto error_out;
-
- atomic_add(i, &ap->cur_jumbo_bufs);
- ap->rx_jumbo_skbprd = idx;
-
- if (ACE_IS_TIGON_I(ap)) {
- struct cmd cmd;
- cmd.evt = C_SET_RX_JUMBO_PRD_IDX;
- cmd.code = 0;
- cmd.idx = ap->rx_jumbo_skbprd;
- ace_issue_cmd(regs, &cmd);
- } else {
- writel(idx, ®s->RxJumboPrd);
- wmb();
- }
-
- out:
- clear_bit(0, &ap->jumbo_refill_busy);
- return;
- error_out:
- if (net_ratelimit())
- printk(KERN_INFO "Out of memory when allocating "
- "jumbo receive buffers\n");
- goto out;
-}
-
-
-/*
- * All events are considered to be slow (RX/TX ints do not generate
- * events) and are handled here, outside the main interrupt handler,
- * to reduce the size of the handler.
- */
-static u32 ace_handle_event(struct net_device *dev, u32 evtcsm, u32 evtprd)
-{
- struct ace_private *ap;
-
- ap = netdev_priv(dev);
-
- while (evtcsm != evtprd) {
- switch (ap->evt_ring[evtcsm].evt) {
- case E_FW_RUNNING:
- printk(KERN_INFO "%s: Firmware up and running\n",
- ap->name);
- ap->fw_running = 1;
- wmb();
- break;
- case E_STATS_UPDATED:
- break;
- case E_LNK_STATE:
- {
- u16 code = ap->evt_ring[evtcsm].code;
- switch (code) {
- case E_C_LINK_UP:
- {
- u32 state = readl(&ap->regs->GigLnkState);
- printk(KERN_WARNING "%s: Optical link UP "
- "(%s Duplex, Flow Control: %s%s)\n",
- ap->name,
- state & LNK_FULL_DUPLEX ? "Full":"Half",
- state & LNK_TX_FLOW_CTL_Y ? "TX " : "",
- state & LNK_RX_FLOW_CTL_Y ? "RX" : "");
- break;
- }
- case E_C_LINK_DOWN:
- printk(KERN_WARNING "%s: Optical link DOWN\n",
- ap->name);
- break;
- case E_C_LINK_10_100:
- printk(KERN_WARNING "%s: 10/100BaseT link "
- "UP\n", ap->name);
- break;
- default:
- printk(KERN_ERR "%s: Unknown optical link "
- "state %02x\n", ap->name, code);
- }
- break;
- }
- case E_ERROR:
- switch(ap->evt_ring[evtcsm].code) {
- case E_C_ERR_INVAL_CMD:
- printk(KERN_ERR "%s: invalid command error\n",
- ap->name);
- break;
- case E_C_ERR_UNIMP_CMD:
- printk(KERN_ERR "%s: unimplemented command "
- "error\n", ap->name);
- break;
- case E_C_ERR_BAD_CFG:
- printk(KERN_ERR "%s: bad config error\n",
- ap->name);
- break;
- default:
- printk(KERN_ERR "%s: unknown error %02x\n",
- ap->name, ap->evt_ring[evtcsm].code);
- }
- break;
- case E_RESET_JUMBO_RNG:
- {
- int i;
- for (i = 0; i < RX_JUMBO_RING_ENTRIES; i++) {
- if (ap->skb->rx_jumbo_skbuff[i].skb) {
- ap->rx_jumbo_ring[i].size = 0;
- set_aceaddr(&ap->rx_jumbo_ring[i].addr, 0);
- dev_kfree_skb(ap->skb->rx_jumbo_skbuff[i].skb);
- ap->skb->rx_jumbo_skbuff[i].skb = NULL;
- }
- }
-
- if (ACE_IS_TIGON_I(ap)) {
- struct cmd cmd;
- cmd.evt = C_SET_RX_JUMBO_PRD_IDX;
- cmd.code = 0;
- cmd.idx = 0;
- ace_issue_cmd(ap->regs, &cmd);
- } else {
- writel(0, &((ap->regs)->RxJumboPrd));
- wmb();
- }
-
- ap->jumbo = 0;
- ap->rx_jumbo_skbprd = 0;
- printk(KERN_INFO "%s: Jumbo ring flushed\n",
- ap->name);
- clear_bit(0, &ap->jumbo_refill_busy);
- break;
- }
- default:
- printk(KERN_ERR "%s: Unhandled event 0x%02x\n",
- ap->name, ap->evt_ring[evtcsm].evt);
- }
- evtcsm = (evtcsm + 1) % EVT_RING_ENTRIES;
- }
-
- return evtcsm;
-}
-
-
-static void ace_rx_int(struct net_device *dev, u32 rxretprd, u32 rxretcsm)
-{
- struct ace_private *ap = netdev_priv(dev);
- u32 idx;
- int mini_count = 0, std_count = 0;
-
- idx = rxretcsm;
-
- prefetchw(&ap->cur_rx_bufs);
- prefetchw(&ap->cur_mini_bufs);
-
- while (idx != rxretprd) {
- struct ring_info *rip;
- struct sk_buff *skb;
- struct rx_desc *retdesc;
- u32 skbidx;
- int bd_flags, desc_type, mapsize;
- u16 csum;
-
-
- /* make sure the rx descriptor isn't read before rxretprd */
- if (idx == rxretcsm)
- rmb();
-
- retdesc = &ap->rx_return_ring[idx];
- skbidx = retdesc->idx;
- bd_flags = retdesc->flags;
- desc_type = bd_flags & (BD_FLG_JUMBO | BD_FLG_MINI);
-
- switch(desc_type) {
- /*
- * Normal frames do not have any flags set
- *
- * Mini and normal frames arrive frequently,
- * so use a local counter to avoid doing
- * atomic operations for each packet arriving.
- */
- case 0:
- rip = &ap->skb->rx_std_skbuff[skbidx];
- mapsize = ACE_STD_BUFSIZE;
- std_count++;
- break;
- case BD_FLG_JUMBO:
- rip = &ap->skb->rx_jumbo_skbuff[skbidx];
- mapsize = ACE_JUMBO_BUFSIZE;
- atomic_dec(&ap->cur_jumbo_bufs);
- break;
- case BD_FLG_MINI:
- rip = &ap->skb->rx_mini_skbuff[skbidx];
- mapsize = ACE_MINI_BUFSIZE;
- mini_count++;
- break;
- default:
- printk(KERN_INFO "%s: unknown frame type (0x%02x) "
- "returned by NIC\n", dev->name,
- retdesc->flags);
- goto error;
- }
-
- skb = rip->skb;
- rip->skb = NULL;
- dma_unmap_page(&ap->pdev->dev, dma_unmap_addr(rip, mapping),
- mapsize, DMA_FROM_DEVICE);
- skb_put(skb, retdesc->size);
-
- /*
- * Fly baby, fly!
- */
- csum = retdesc->tcp_udp_csum;
-
- skb->protocol = eth_type_trans(skb, dev);
-
- /*
- * Instead of forcing the poor tigon mips cpu to calculate
- * pseudo hdr checksum, we do this ourselves.
- */
- if (bd_flags & BD_FLG_TCP_UDP_SUM) {
- skb->csum = htons(csum);
- skb->ip_summed = CHECKSUM_COMPLETE;
- } else {
- skb_checksum_none_assert(skb);
- }
-
- /* send it up */
- if ((bd_flags & BD_FLG_VLAN_TAG))
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), retdesc->vlan);
- netif_rx(skb);
-
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += retdesc->size;
-
- idx = (idx + 1) % RX_RETURN_RING_ENTRIES;
- }
-
- atomic_sub(std_count, &ap->cur_rx_bufs);
- if (!ACE_IS_TIGON_I(ap))
- atomic_sub(mini_count, &ap->cur_mini_bufs);
-
- out:
- /*
- * According to the documentation RxRetCsm is obsolete with
- * the 12.3.x Firmware - my Tigon I NICs seem to disagree!
- */
- if (ACE_IS_TIGON_I(ap)) {
- writel(idx, &ap->regs->RxRetCsm);
- }
- ap->cur_rx = idx;
-
- return;
- error:
- idx = rxretprd;
- goto out;
-}
-
-
-static inline void ace_tx_int(struct net_device *dev,
- u32 txcsm, u32 idx)
-{
- struct ace_private *ap = netdev_priv(dev);
-
- do {
- struct sk_buff *skb;
- struct tx_ring_info *info;
-
- info = ap->skb->tx_skbuff + idx;
- skb = info->skb;
-
- if (dma_unmap_len(info, maplen)) {
- dma_unmap_page(&ap->pdev->dev,
- dma_unmap_addr(info, mapping),
- dma_unmap_len(info, maplen),
- DMA_TO_DEVICE);
- dma_unmap_len_set(info, maplen, 0);
- }
-
- if (skb) {
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
- dev_consume_skb_irq(skb);
- info->skb = NULL;
- }
-
- idx = (idx + 1) % ACE_TX_RING_ENTRIES(ap);
- } while (idx != txcsm);
-
- if (netif_queue_stopped(dev))
- netif_wake_queue(dev);
-
- wmb();
- ap->tx_ret_csm = txcsm;
-
- /* So... tx_ret_csm is advanced _after_ check for device wakeup.
- *
- * We could try to make it before. In this case we would get
- * the following race condition: hard_start_xmit on other cpu
- * enters after we advanced tx_ret_csm and fills space,
- * which we have just freed, so that we make illegal device wakeup.
- * There is no good way to workaround this (at entry
- * to ace_start_xmit detects this condition and prevents
- * ring corruption, but it is not a good workaround.)
- *
- * When tx_ret_csm is advanced after, we wake up device _only_
- * if we really have some space in ring (though the core doing
- * hard_start_xmit can see full ring for some period and has to
- * synchronize.) Superb.
- * BUT! We get another subtle race condition. hard_start_xmit
- * may think that ring is full between wakeup and advancing
- * tx_ret_csm and will stop device instantly! It is not so bad.
- * We are guaranteed that there is something in ring, so that
- * the next irq will resume transmission. To speedup this we could
- * mark descriptor, which closes ring with BD_FLG_COAL_NOW
- * (see ace_start_xmit).
- *
- * Well, this dilemma exists in all lock-free devices.
- * We, following scheme used in drivers by Donald Becker,
- * select the least dangerous.
- * --ANK
- */
-}
-
-
-static irqreturn_t ace_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *)dev_id;
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- u32 idx;
- u32 txcsm, rxretcsm, rxretprd;
- u32 evtcsm, evtprd;
-
- /*
- * In case of PCI shared interrupts or spurious interrupts,
- * we want to make sure it is actually our interrupt before
- * spending any time in here.
- */
- if (!(readl(®s->HostCtrl) & IN_INT))
- return IRQ_NONE;
-
- /*
- * ACK intr now. Otherwise we will lose updates to rx_ret_prd,
- * which happened _after_ rxretprd = *ap->rx_ret_prd; but before
- * writel(0, ®s->Mb0Lo).
- *
- * "IRQ avoidance" recommended in docs applies to IRQs served
- * threads and it is wrong even for that case.
- */
- writel(0, ®s->Mb0Lo);
- readl(®s->Mb0Lo);
-
- /*
- * There is no conflict between transmit handling in
- * start_xmit and receive processing, thus there is no reason
- * to take a spin lock for RX handling. Wait until we start
- * working on the other stuff - hey we don't need a spin lock
- * anymore.
- */
- rxretprd = *ap->rx_ret_prd;
- rxretcsm = ap->cur_rx;
-
- if (rxretprd != rxretcsm)
- ace_rx_int(dev, rxretprd, rxretcsm);
-
- txcsm = *ap->tx_csm;
- idx = ap->tx_ret_csm;
-
- if (txcsm != idx) {
- /*
- * If each skb takes only one descriptor this check degenerates
- * to identity, because new space has just been opened.
- * But if skbs are fragmented we must check that this index
- * update releases enough of space, otherwise we just
- * wait for device to make more work.
- */
- if (!tx_ring_full(ap, txcsm, ap->tx_prd))
- ace_tx_int(dev, txcsm, idx);
- }
-
- evtcsm = readl(®s->EvtCsm);
- evtprd = *ap->evt_prd;
-
- if (evtcsm != evtprd) {
- evtcsm = ace_handle_event(dev, evtcsm, evtprd);
- writel(evtcsm, ®s->EvtCsm);
- }
-
- /*
- * This has to go last in the interrupt handler and run with
- * the spin lock released ... what lock?
- */
- if (netif_running(dev)) {
- int cur_size;
- int run_bh_work = 0;
-
- cur_size = atomic_read(&ap->cur_rx_bufs);
- if (cur_size < RX_LOW_STD_THRES) {
- if ((cur_size < RX_PANIC_STD_THRES) &&
- !test_and_set_bit(0, &ap->std_refill_busy)) {
-#ifdef DEBUG
- printk("low on std buffers %i\n", cur_size);
-#endif
- ace_load_std_rx_ring(dev,
- RX_RING_SIZE - cur_size);
- } else
- run_bh_work = 1;
- }
-
- if (!ACE_IS_TIGON_I(ap)) {
- cur_size = atomic_read(&ap->cur_mini_bufs);
- if (cur_size < RX_LOW_MINI_THRES) {
- if ((cur_size < RX_PANIC_MINI_THRES) &&
- !test_and_set_bit(0,
- &ap->mini_refill_busy)) {
-#ifdef DEBUG
- printk("low on mini buffers %i\n",
- cur_size);
-#endif
- ace_load_mini_rx_ring(dev,
- RX_MINI_SIZE - cur_size);
- } else
- run_bh_work = 1;
- }
- }
-
- if (ap->jumbo) {
- cur_size = atomic_read(&ap->cur_jumbo_bufs);
- if (cur_size < RX_LOW_JUMBO_THRES) {
- if ((cur_size < RX_PANIC_JUMBO_THRES) &&
- !test_and_set_bit(0,
- &ap->jumbo_refill_busy)){
-#ifdef DEBUG
- printk("low on jumbo buffers %i\n",
- cur_size);
-#endif
- ace_load_jumbo_rx_ring(dev,
- RX_JUMBO_SIZE - cur_size);
- } else
- run_bh_work = 1;
- }
- }
- if (run_bh_work && !ap->bh_work_pending) {
- ap->bh_work_pending = 1;
- queue_work(system_bh_wq, &ap->ace_bh_work);
- }
- }
-
- return IRQ_HANDLED;
-}
-
-static int ace_open(struct net_device *dev)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- struct cmd cmd;
-
- if (!(ap->fw_running)) {
- printk(KERN_WARNING "%s: Firmware not running!\n", dev->name);
- return -EBUSY;
- }
-
- writel(dev->mtu + ETH_HLEN + 4, ®s->IfMtu);
-
- cmd.evt = C_CLEAR_STATS;
- cmd.code = 0;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
-
- cmd.evt = C_HOST_STATE;
- cmd.code = C_C_STACK_UP;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
-
- if (ap->jumbo &&
- !test_and_set_bit(0, &ap->jumbo_refill_busy))
- ace_load_jumbo_rx_ring(dev, RX_JUMBO_SIZE);
-
- if (dev->flags & IFF_PROMISC) {
- cmd.evt = C_SET_PROMISC_MODE;
- cmd.code = C_C_PROMISC_ENABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
-
- ap->promisc = 1;
- }else
- ap->promisc = 0;
- ap->mcast_all = 0;
-
-#if 0
- cmd.evt = C_LNK_NEGOTIATION;
- cmd.code = 0;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
-#endif
-
- netif_start_queue(dev);
-
- /*
- * Setup the bottom half rx ring refill handler
- */
- INIT_WORK(&ap->ace_bh_work, ace_bh_work);
- return 0;
-}
-
-
-static int ace_close(struct net_device *dev)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- struct cmd cmd;
- unsigned long flags;
- short i;
-
- /*
- * Without (or before) releasing irq and stopping hardware, this
- * is an absolute non-sense, by the way. It will be reset instantly
- * by the first irq.
- */
- netif_stop_queue(dev);
-
-
- if (ap->promisc) {
- cmd.evt = C_SET_PROMISC_MODE;
- cmd.code = C_C_PROMISC_DISABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- ap->promisc = 0;
- }
-
- cmd.evt = C_HOST_STATE;
- cmd.code = C_C_STACK_DOWN;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
-
- cancel_work_sync(&ap->ace_bh_work);
-
- /*
- * Make sure one CPU is not processing packets while
- * buffers are being released by another.
- */
-
- local_irq_save(flags);
- ace_mask_irq(dev);
-
- for (i = 0; i < ACE_TX_RING_ENTRIES(ap); i++) {
- struct sk_buff *skb;
- struct tx_ring_info *info;
-
- info = ap->skb->tx_skbuff + i;
- skb = info->skb;
-
- if (dma_unmap_len(info, maplen)) {
- if (ACE_IS_TIGON_I(ap)) {
- /* NB: TIGON_1 is special, tx_ring is in io space */
- struct tx_desc __iomem *tx;
- tx = (__force struct tx_desc __iomem *) &ap->tx_ring[i];
- writel(0, &tx->addr.addrhi);
- writel(0, &tx->addr.addrlo);
- writel(0, &tx->flagsize);
- } else
- memset(ap->tx_ring + i, 0,
- sizeof(struct tx_desc));
- dma_unmap_page(&ap->pdev->dev,
- dma_unmap_addr(info, mapping),
- dma_unmap_len(info, maplen),
- DMA_TO_DEVICE);
- dma_unmap_len_set(info, maplen, 0);
- }
- if (skb) {
- dev_kfree_skb(skb);
- info->skb = NULL;
- }
- }
-
- if (ap->jumbo) {
- cmd.evt = C_RESET_JUMBO_RNG;
- cmd.code = 0;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- }
-
- ace_unmask_irq(dev);
- local_irq_restore(flags);
-
- return 0;
-}
-
-
-static inline dma_addr_t
-ace_map_tx_skb(struct ace_private *ap, struct sk_buff *skb,
- struct sk_buff *tail, u32 idx)
-{
- dma_addr_t mapping;
- struct tx_ring_info *info;
-
- mapping = dma_map_page(&ap->pdev->dev, virt_to_page(skb->data),
- offset_in_page(skb->data), skb->len,
- DMA_TO_DEVICE);
-
- info = ap->skb->tx_skbuff + idx;
- info->skb = tail;
- dma_unmap_addr_set(info, mapping, mapping);
- dma_unmap_len_set(info, maplen, skb->len);
- return mapping;
-}
-
-
-static inline void
-ace_load_tx_bd(struct ace_private *ap, struct tx_desc *desc, u64 addr,
- u32 flagsize, u32 vlan_tag)
-{
-#if !USE_TX_COAL_NOW
- flagsize &= ~BD_FLG_COAL_NOW;
-#endif
-
- if (ACE_IS_TIGON_I(ap)) {
- struct tx_desc __iomem *io = (__force struct tx_desc __iomem *) desc;
- writel(addr >> 32, &io->addr.addrhi);
- writel(addr & 0xffffffff, &io->addr.addrlo);
- writel(flagsize, &io->flagsize);
- writel(vlan_tag, &io->vlanres);
- } else {
- desc->addr.addrhi = addr >> 32;
- desc->addr.addrlo = addr;
- desc->flagsize = flagsize;
- desc->vlanres = vlan_tag;
- }
-}
-
-
-static netdev_tx_t ace_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- struct tx_desc *desc;
- u32 idx, flagsize;
- unsigned long maxjiff = jiffies + 3*HZ;
-
-restart:
- idx = ap->tx_prd;
-
- if (tx_ring_full(ap, ap->tx_ret_csm, idx))
- goto overflow;
-
- if (!skb_shinfo(skb)->nr_frags) {
- dma_addr_t mapping;
- u32 vlan_tag = 0;
-
- mapping = ace_map_tx_skb(ap, skb, skb, idx);
- flagsize = (skb->len << 16) | (BD_FLG_END);
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- flagsize |= BD_FLG_TCP_UDP_SUM;
- if (skb_vlan_tag_present(skb)) {
- flagsize |= BD_FLG_VLAN_TAG;
- vlan_tag = skb_vlan_tag_get(skb);
- }
- desc = ap->tx_ring + idx;
- idx = (idx + 1) % ACE_TX_RING_ENTRIES(ap);
-
- /* Look at ace_tx_int for explanations. */
- if (tx_ring_full(ap, ap->tx_ret_csm, idx))
- flagsize |= BD_FLG_COAL_NOW;
-
- ace_load_tx_bd(ap, desc, mapping, flagsize, vlan_tag);
- } else {
- dma_addr_t mapping;
- u32 vlan_tag = 0;
- int i;
-
- mapping = ace_map_tx_skb(ap, skb, NULL, idx);
- flagsize = (skb_headlen(skb) << 16);
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- flagsize |= BD_FLG_TCP_UDP_SUM;
- if (skb_vlan_tag_present(skb)) {
- flagsize |= BD_FLG_VLAN_TAG;
- vlan_tag = skb_vlan_tag_get(skb);
- }
-
- ace_load_tx_bd(ap, ap->tx_ring + idx, mapping, flagsize, vlan_tag);
-
- idx = (idx + 1) % ACE_TX_RING_ENTRIES(ap);
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
- struct tx_ring_info *info;
-
- info = ap->skb->tx_skbuff + idx;
- desc = ap->tx_ring + idx;
-
- mapping = skb_frag_dma_map(&ap->pdev->dev, frag, 0,
- skb_frag_size(frag),
- DMA_TO_DEVICE);
-
- flagsize = skb_frag_size(frag) << 16;
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- flagsize |= BD_FLG_TCP_UDP_SUM;
- idx = (idx + 1) % ACE_TX_RING_ENTRIES(ap);
-
- if (i == skb_shinfo(skb)->nr_frags - 1) {
- flagsize |= BD_FLG_END;
- if (tx_ring_full(ap, ap->tx_ret_csm, idx))
- flagsize |= BD_FLG_COAL_NOW;
-
- /*
- * Only the last fragment frees
- * the skb!
- */
- info->skb = skb;
- } else {
- info->skb = NULL;
- }
- dma_unmap_addr_set(info, mapping, mapping);
- dma_unmap_len_set(info, maplen, skb_frag_size(frag));
- ace_load_tx_bd(ap, desc, mapping, flagsize, vlan_tag);
- }
- }
-
- wmb();
- ap->tx_prd = idx;
- ace_set_txprd(regs, ap, idx);
-
- if (flagsize & BD_FLG_COAL_NOW) {
- netif_stop_queue(dev);
-
- /*
- * A TX-descriptor producer (an IRQ) might have gotten
- * between, making the ring free again. Since xmit is
- * serialized, this is the only situation we have to
- * re-test.
- */
- if (!tx_ring_full(ap, ap->tx_ret_csm, idx))
- netif_wake_queue(dev);
- }
-
- return NETDEV_TX_OK;
-
-overflow:
- /*
- * This race condition is unavoidable with lock-free drivers.
- * We wake up the queue _before_ tx_prd is advanced, so that we can
- * enter hard_start_xmit too early, while tx ring still looks closed.
- * This happens ~1-4 times per 100000 packets, so that we can allow
- * to loop syncing to other CPU. Probably, we need an additional
- * wmb() in ace_tx_intr as well.
- *
- * Note that this race is relieved by reserving one more entry
- * in tx ring than it is necessary (see original non-SG driver).
- * However, with SG we need to reserve 2*MAX_SKB_FRAGS+1, which
- * is already overkill.
- *
- * Alternative is to return with 1 not throttling queue. In this
- * case loop becomes longer, no more useful effects.
- */
- if (time_before(jiffies, maxjiff)) {
- barrier();
- cpu_relax();
- goto restart;
- }
-
- /* The ring is stuck full. */
- printk(KERN_WARNING "%s: Transmit ring stuck full\n", dev->name);
- return NETDEV_TX_BUSY;
-}
-
-
-static int ace_change_mtu(struct net_device *dev, int new_mtu)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
-
- writel(new_mtu + ETH_HLEN + 4, ®s->IfMtu);
- WRITE_ONCE(dev->mtu, new_mtu);
-
- if (new_mtu > ACE_STD_MTU) {
- if (!(ap->jumbo)) {
- printk(KERN_INFO "%s: Enabling Jumbo frame "
- "support\n", dev->name);
- ap->jumbo = 1;
- if (!test_and_set_bit(0, &ap->jumbo_refill_busy))
- ace_load_jumbo_rx_ring(dev, RX_JUMBO_SIZE);
- ace_set_rxtx_parms(dev, 1);
- }
- } else {
- while (test_and_set_bit(0, &ap->jumbo_refill_busy));
- ace_sync_irq(dev->irq);
- ace_set_rxtx_parms(dev, 0);
- if (ap->jumbo) {
- struct cmd cmd;
-
- cmd.evt = C_RESET_JUMBO_RNG;
- cmd.code = 0;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- }
- }
-
- return 0;
-}
-
-static int ace_get_link_ksettings(struct net_device *dev,
- struct ethtool_link_ksettings *cmd)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- u32 link;
- u32 supported;
-
- memset(cmd, 0, sizeof(struct ethtool_link_ksettings));
-
- supported = (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
- SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
- SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full |
- SUPPORTED_Autoneg | SUPPORTED_FIBRE);
-
- cmd->base.port = PORT_FIBRE;
-
- link = readl(®s->GigLnkState);
- if (link & LNK_1000MB) {
- cmd->base.speed = SPEED_1000;
- } else {
- link = readl(®s->FastLnkState);
- if (link & LNK_100MB)
- cmd->base.speed = SPEED_100;
- else if (link & LNK_10MB)
- cmd->base.speed = SPEED_10;
- else
- cmd->base.speed = 0;
- }
- if (link & LNK_FULL_DUPLEX)
- cmd->base.duplex = DUPLEX_FULL;
- else
- cmd->base.duplex = DUPLEX_HALF;
-
- if (link & LNK_NEGOTIATE)
- cmd->base.autoneg = AUTONEG_ENABLE;
- else
- cmd->base.autoneg = AUTONEG_DISABLE;
-
-#if 0
- /*
- * Current struct ethtool_cmd is insufficient
- */
- ecmd->trace = readl(®s->TuneTrace);
-
- ecmd->txcoal = readl(®s->TuneTxCoalTicks);
- ecmd->rxcoal = readl(®s->TuneRxCoalTicks);
-#endif
-
- ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
- supported);
-
- return 0;
-}
-
-static int ace_set_link_ksettings(struct net_device *dev,
- const struct ethtool_link_ksettings *cmd)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- u32 link, speed;
-
- link = readl(®s->GigLnkState);
- if (link & LNK_1000MB)
- speed = SPEED_1000;
- else {
- link = readl(®s->FastLnkState);
- if (link & LNK_100MB)
- speed = SPEED_100;
- else if (link & LNK_10MB)
- speed = SPEED_10;
- else
- speed = SPEED_100;
- }
-
- link = LNK_ENABLE | LNK_1000MB | LNK_100MB | LNK_10MB |
- LNK_RX_FLOW_CTL_Y | LNK_NEG_FCTL;
- if (!ACE_IS_TIGON_I(ap))
- link |= LNK_TX_FLOW_CTL_Y;
- if (cmd->base.autoneg == AUTONEG_ENABLE)
- link |= LNK_NEGOTIATE;
- if (cmd->base.speed != speed) {
- link &= ~(LNK_1000MB | LNK_100MB | LNK_10MB);
- switch (cmd->base.speed) {
- case SPEED_1000:
- link |= LNK_1000MB;
- break;
- case SPEED_100:
- link |= LNK_100MB;
- break;
- case SPEED_10:
- link |= LNK_10MB;
- break;
- }
- }
-
- if (cmd->base.duplex == DUPLEX_FULL)
- link |= LNK_FULL_DUPLEX;
-
- if (link != ap->link) {
- struct cmd cmd;
- printk(KERN_INFO "%s: Renegotiating link state\n",
- dev->name);
-
- ap->link = link;
- writel(link, ®s->TuneLink);
- if (!ACE_IS_TIGON_I(ap))
- writel(link, ®s->TuneFastLink);
- wmb();
-
- cmd.evt = C_LNK_NEGOTIATION;
- cmd.code = 0;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- }
- return 0;
-}
-
-static void ace_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- struct ace_private *ap = netdev_priv(dev);
-
- strscpy(info->driver, "acenic", sizeof(info->driver));
- snprintf(info->fw_version, sizeof(info->version), "%i.%i.%i",
- ap->firmware_major, ap->firmware_minor, ap->firmware_fix);
-
- if (ap->pdev)
- strscpy(info->bus_info, pci_name(ap->pdev),
- sizeof(info->bus_info));
-
-}
-
-/*
- * Set the hardware MAC address.
- */
-static int ace_set_mac_addr(struct net_device *dev, void *p)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- struct sockaddr *addr=p;
- const u8 *da;
- struct cmd cmd;
-
- if(netif_running(dev))
- return -EBUSY;
-
- eth_hw_addr_set(dev, addr->sa_data);
-
- da = (const u8 *)dev->dev_addr;
-
- writel(da[0] << 8 | da[1], ®s->MacAddrHi);
- writel((da[2] << 24) | (da[3] << 16) | (da[4] << 8) | da[5],
- ®s->MacAddrLo);
-
- cmd.evt = C_SET_MAC_ADDR;
- cmd.code = 0;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
-
- return 0;
-}
-
-
-static void ace_set_multicast_list(struct net_device *dev)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- struct cmd cmd;
-
- if ((dev->flags & IFF_ALLMULTI) && !(ap->mcast_all)) {
- cmd.evt = C_SET_MULTICAST_MODE;
- cmd.code = C_C_MCAST_ENABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- ap->mcast_all = 1;
- } else if (ap->mcast_all) {
- cmd.evt = C_SET_MULTICAST_MODE;
- cmd.code = C_C_MCAST_DISABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- ap->mcast_all = 0;
- }
-
- if ((dev->flags & IFF_PROMISC) && !(ap->promisc)) {
- cmd.evt = C_SET_PROMISC_MODE;
- cmd.code = C_C_PROMISC_ENABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- ap->promisc = 1;
- }else if (!(dev->flags & IFF_PROMISC) && (ap->promisc)) {
- cmd.evt = C_SET_PROMISC_MODE;
- cmd.code = C_C_PROMISC_DISABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- ap->promisc = 0;
- }
-
- /*
- * For the time being multicast relies on the upper layers
- * filtering it properly. The Firmware does not allow one to
- * set the entire multicast list at a time and keeping track of
- * it here is going to be messy.
- */
- if (!netdev_mc_empty(dev) && !ap->mcast_all) {
- cmd.evt = C_SET_MULTICAST_MODE;
- cmd.code = C_C_MCAST_ENABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- }else if (!ap->mcast_all) {
- cmd.evt = C_SET_MULTICAST_MODE;
- cmd.code = C_C_MCAST_DISABLE;
- cmd.idx = 0;
- ace_issue_cmd(regs, &cmd);
- }
-}
-
-
-static struct net_device_stats *ace_get_stats(struct net_device *dev)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_mac_stats __iomem *mac_stats =
- (struct ace_mac_stats __iomem *)ap->regs->Stats;
-
- dev->stats.rx_missed_errors = readl(&mac_stats->drop_space);
- dev->stats.multicast = readl(&mac_stats->kept_mc);
- dev->stats.collisions = readl(&mac_stats->coll);
-
- return &dev->stats;
-}
-
-
-static void ace_copy(struct ace_regs __iomem *regs, const __be32 *src,
- u32 dest, int size)
-{
- void __iomem *tdest;
- short tsize, i;
-
- if (size <= 0)
- return;
-
- while (size > 0) {
- tsize = min_t(u32, ((~dest & (ACE_WINDOW_SIZE - 1)) + 1),
- min_t(u32, size, ACE_WINDOW_SIZE));
- tdest = (void __iomem *) ®s->Window +
- (dest & (ACE_WINDOW_SIZE - 1));
- writel(dest & ~(ACE_WINDOW_SIZE - 1), ®s->WinBase);
- for (i = 0; i < (tsize / 4); i++) {
- /* Firmware is big-endian */
- writel(be32_to_cpup(src), tdest);
- src++;
- tdest += 4;
- dest += 4;
- size -= 4;
- }
- }
-}
-
-
-static void ace_clear(struct ace_regs __iomem *regs, u32 dest, int size)
-{
- void __iomem *tdest;
- short tsize = 0, i;
-
- if (size <= 0)
- return;
-
- while (size > 0) {
- tsize = min_t(u32, ((~dest & (ACE_WINDOW_SIZE - 1)) + 1),
- min_t(u32, size, ACE_WINDOW_SIZE));
- tdest = (void __iomem *) ®s->Window +
- (dest & (ACE_WINDOW_SIZE - 1));
- writel(dest & ~(ACE_WINDOW_SIZE - 1), ®s->WinBase);
-
- for (i = 0; i < (tsize / 4); i++) {
- writel(0, tdest + i*4);
- }
-
- dest += tsize;
- size -= tsize;
- }
-}
-
-
-/*
- * Download the firmware into the SRAM on the NIC
- *
- * This operation requires the NIC to be halted and is performed with
- * interrupts disabled and with the spinlock hold.
- */
-static int ace_load_firmware(struct net_device *dev)
-{
- const struct firmware *fw;
- const char *fw_name = "acenic/tg2.bin";
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- const __be32 *fw_data;
- u32 load_addr;
- int ret;
-
- if (!(readl(®s->CpuCtrl) & CPU_HALTED)) {
- printk(KERN_ERR "%s: trying to download firmware while the "
- "CPU is running!\n", ap->name);
- return -EFAULT;
- }
-
- if (ACE_IS_TIGON_I(ap))
- fw_name = "acenic/tg1.bin";
-
- ret = request_firmware(&fw, fw_name, &ap->pdev->dev);
- if (ret) {
- printk(KERN_ERR "%s: Failed to load firmware \"%s\"\n",
- ap->name, fw_name);
- return ret;
- }
-
- fw_data = (void *)fw->data;
-
- /* Firmware blob starts with version numbers, followed by
- load and start address. Remainder is the blob to be loaded
- contiguously from load address. We don't bother to represent
- the BSS/SBSS sections any more, since we were clearing the
- whole thing anyway. */
- ap->firmware_major = fw->data[0];
- ap->firmware_minor = fw->data[1];
- ap->firmware_fix = fw->data[2];
-
- ap->firmware_start = be32_to_cpu(fw_data[1]);
- if (ap->firmware_start < 0x4000 || ap->firmware_start >= 0x80000) {
- printk(KERN_ERR "%s: bogus load address %08x in \"%s\"\n",
- ap->name, ap->firmware_start, fw_name);
- ret = -EINVAL;
- goto out;
- }
-
- load_addr = be32_to_cpu(fw_data[2]);
- if (load_addr < 0x4000 || load_addr >= 0x80000) {
- printk(KERN_ERR "%s: bogus load address %08x in \"%s\"\n",
- ap->name, load_addr, fw_name);
- ret = -EINVAL;
- goto out;
- }
-
- /*
- * Do not try to clear more than 512KiB or we end up seeing
- * funny things on NICs with only 512KiB SRAM
- */
- ace_clear(regs, 0x2000, 0x80000-0x2000);
- ace_copy(regs, &fw_data[3], load_addr, fw->size-12);
- out:
- release_firmware(fw);
- return ret;
-}
-
-
-/*
- * The eeprom on the AceNIC is an Atmel i2c EEPROM.
- *
- * Accessing the EEPROM is `interesting' to say the least - don't read
- * this code right after dinner.
- *
- * This is all about black magic and bit-banging the device .... I
- * wonder in what hospital they have put the guy who designed the i2c
- * specs.
- *
- * Oh yes, this is only the beginning!
- *
- * Thanks to Stevarino Webinski for helping tracking down the bugs in the
- * code i2c readout code by beta testing all my hacks.
- */
-static void eeprom_start(struct ace_regs __iomem *regs)
-{
- u32 local;
-
- readl(®s->LocalCtrl);
- udelay(ACE_SHORT_DELAY);
- local = readl(®s->LocalCtrl);
- local |= EEPROM_DATA_OUT | EEPROM_WRITE_ENABLE;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- local |= EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- local &= ~EEPROM_DATA_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- local &= ~EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
-}
-
-
-static void eeprom_prep(struct ace_regs __iomem *regs, u8 magic)
-{
- short i;
- u32 local;
-
- udelay(ACE_SHORT_DELAY);
- local = readl(®s->LocalCtrl);
- local &= ~EEPROM_DATA_OUT;
- local |= EEPROM_WRITE_ENABLE;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
-
- for (i = 0; i < 8; i++, magic <<= 1) {
- udelay(ACE_SHORT_DELAY);
- if (magic & 0x80)
- local |= EEPROM_DATA_OUT;
- else
- local &= ~EEPROM_DATA_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
-
- udelay(ACE_SHORT_DELAY);
- local |= EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- local &= ~(EEPROM_CLK_OUT | EEPROM_DATA_OUT);
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- }
-}
-
-
-static int eeprom_check_ack(struct ace_regs __iomem *regs)
-{
- int state;
- u32 local;
-
- local = readl(®s->LocalCtrl);
- local &= ~EEPROM_WRITE_ENABLE;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_LONG_DELAY);
- local |= EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- /* sample data in middle of high clk */
- state = (readl(®s->LocalCtrl) & EEPROM_DATA_IN) != 0;
- udelay(ACE_SHORT_DELAY);
- mb();
- writel(readl(®s->LocalCtrl) & ~EEPROM_CLK_OUT, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
-
- return state;
-}
-
-
-static void eeprom_stop(struct ace_regs __iomem *regs)
-{
- u32 local;
-
- udelay(ACE_SHORT_DELAY);
- local = readl(®s->LocalCtrl);
- local |= EEPROM_WRITE_ENABLE;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- local &= ~EEPROM_DATA_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- local |= EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- local |= EEPROM_DATA_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_LONG_DELAY);
- local &= ~EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- mb();
-}
-
-
-/*
- * Read a whole byte from the EEPROM.
- */
-static int read_eeprom_byte(struct net_device *dev, unsigned long offset)
-{
- struct ace_private *ap = netdev_priv(dev);
- struct ace_regs __iomem *regs = ap->regs;
- unsigned long flags;
- u32 local;
- int result = 0;
- short i;
-
- /*
- * Don't take interrupts on this CPU will bit banging
- * the %#%#@$ I2C device
- */
- local_irq_save(flags);
-
- eeprom_start(regs);
-
- eeprom_prep(regs, EEPROM_WRITE_SELECT);
- if (eeprom_check_ack(regs)) {
- local_irq_restore(flags);
- printk(KERN_ERR "%s: Unable to sync eeprom\n", ap->name);
- result = -EIO;
- goto eeprom_read_error;
- }
-
- eeprom_prep(regs, (offset >> 8) & 0xff);
- if (eeprom_check_ack(regs)) {
- local_irq_restore(flags);
- printk(KERN_ERR "%s: Unable to set address byte 0\n",
- ap->name);
- result = -EIO;
- goto eeprom_read_error;
- }
-
- eeprom_prep(regs, offset & 0xff);
- if (eeprom_check_ack(regs)) {
- local_irq_restore(flags);
- printk(KERN_ERR "%s: Unable to set address byte 1\n",
- ap->name);
- result = -EIO;
- goto eeprom_read_error;
- }
-
- eeprom_start(regs);
- eeprom_prep(regs, EEPROM_READ_SELECT);
- if (eeprom_check_ack(regs)) {
- local_irq_restore(flags);
- printk(KERN_ERR "%s: Unable to set READ_SELECT\n",
- ap->name);
- result = -EIO;
- goto eeprom_read_error;
- }
-
- for (i = 0; i < 8; i++) {
- local = readl(®s->LocalCtrl);
- local &= ~EEPROM_WRITE_ENABLE;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- udelay(ACE_LONG_DELAY);
- mb();
- local |= EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- /* sample data mid high clk */
- result = (result << 1) |
- ((readl(®s->LocalCtrl) & EEPROM_DATA_IN) != 0);
- udelay(ACE_SHORT_DELAY);
- mb();
- local = readl(®s->LocalCtrl);
- local &= ~EEPROM_CLK_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- udelay(ACE_SHORT_DELAY);
- mb();
- if (i == 7) {
- local |= EEPROM_WRITE_ENABLE;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- }
- }
-
- local |= EEPROM_DATA_OUT;
- writel(local, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- writel(readl(®s->LocalCtrl) | EEPROM_CLK_OUT, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- udelay(ACE_LONG_DELAY);
- writel(readl(®s->LocalCtrl) & ~EEPROM_CLK_OUT, ®s->LocalCtrl);
- readl(®s->LocalCtrl);
- mb();
- udelay(ACE_SHORT_DELAY);
- eeprom_stop(regs);
-
- local_irq_restore(flags);
- out:
- return result;
-
- eeprom_read_error:
- printk(KERN_ERR "%s: Unable to read eeprom byte 0x%02lx\n",
- ap->name, offset);
- goto out;
-}
-
-module_pci_driver(acenic_pci_driver);
projects / thirdparty / kernel / linux.git / commitdiff
