diff options
Diffstat (limited to 'drivers/net/acenic.c')
| -rw-r--r-- | drivers/net/acenic.c | 3206 |
1 files changed, 0 insertions, 3206 deletions
diff --git a/drivers/net/acenic.c b/drivers/net/acenic.c deleted file mode 100644 index 31798f5f5d06..000000000000 --- a/drivers/net/acenic.c +++ /dev/null @@ -1,3206 +0,0 @@ -/* - * 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. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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/init.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/system.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/byteorder.h> -#include <asm/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 DEFINE_PCI_DEVICE_TABLE(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[] __devinitconst = - "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_settings(struct net_device *, struct ethtool_cmd *); -static int ace_set_settings(struct net_device *, struct ethtool_cmd *); -static void ace_get_drvinfo(struct net_device *, struct ethtool_drvinfo *); - -static const struct ethtool_ops ace_ethtool_ops = { - .get_settings = ace_get_settings, - .set_settings = ace_set_settings, - .get_drvinfo = ace_get_drvinfo, -}; - -static void ace_watchdog(struct net_device *dev); - -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_multicast_list = 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 __devinit 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) { - printk(KERN_ERR "acenic: Unable to allocate " - "net_device structure!\n"); - return -ENOMEM; - } - - SET_NETDEV_DEV(dev, &pdev->dev); - - ap = netdev_priv(dev); - ap->pdev = pdev; - ap->name = pci_name(pdev); - - dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM; - dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; - - dev->watchdog_timeo = 5*HZ; - - dev->netdev_ops = &ace_netdev_ops; - SET_ETHTOOL_OPS(dev, &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; - } - 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; - - if (ap->pci_using_dac) - 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 __devexit 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); - pci_unmap_page(ap->pdev, mapping, - ACE_STD_BUFSIZE, - PCI_DMA_FROMDEVICE); - - 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); - pci_unmap_page(ap->pdev, mapping, - ACE_MINI_BUFSIZE, - PCI_DMA_FROMDEVICE); - - 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); - pci_unmap_page(ap->pdev, mapping, - ACE_JUMBO_BUFSIZE, - PCI_DMA_FROMDEVICE); - - 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 = __devexit_p(acenic_remove_one), -}; - -static int __init acenic_init(void) -{ - return pci_register_driver(&acenic_pci_driver); -} - -static void __exit acenic_exit(void) -{ - pci_unregister_driver(&acenic_pci_driver); -} - -module_init(acenic_init); -module_exit(acenic_exit); - -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)); - pci_free_consistent(ap->pdev, 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); - pci_free_consistent(ap->pdev, 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); - pci_free_consistent(ap->pdev, size, ap->tx_ring, - ap->tx_ring_dma); - } - ap->tx_ring = NULL; - - if (ap->evt_prd != NULL) { - pci_free_consistent(ap->pdev, sizeof(u32), - (void *)ap->evt_prd, ap->evt_prd_dma); - ap->evt_prd = NULL; - } - if (ap->rx_ret_prd != NULL) { - pci_free_consistent(ap->pdev, sizeof(u32), - (void *)ap->rx_ret_prd, - ap->rx_ret_prd_dma); - ap->rx_ret_prd = NULL; - } - if (ap->tx_csm != NULL) { - pci_free_consistent(ap->pdev, 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 = pci_alloc_consistent(ap->pdev, size, - &ap->rx_ring_base_dma); - 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 = pci_alloc_consistent(ap->pdev, size, &ap->evt_ring_dma); - - 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 = pci_alloc_consistent(ap->pdev, size, - &ap->tx_ring_dma); - - if (ap->tx_ring == NULL) - goto fail; - } - - ap->evt_prd = pci_alloc_consistent(ap->pdev, sizeof(u32), - &ap->evt_prd_dma); - if (ap->evt_prd == NULL) - goto fail; - - ap->rx_ret_prd = pci_alloc_consistent(ap->pdev, sizeof(u32), - &ap->rx_ret_prd_dma); - if (ap->rx_ret_prd == NULL) - goto fail; - - ap->tx_csm = pci_alloc_consistent(ap->pdev, sizeof(u32), - &ap->tx_csm_dma); - 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) - pci_free_consistent(ap->pdev, 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 __devinit 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; - - 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); - - dev->dev_addr[0] = (mac1 >> 8) & 0xff; - dev->dev_addr[1] = mac1 & 0xff; - dev->dev_addr[2] = (mac2 >> 24) & 0xff; - dev->dev_addr[3] = (mac2 >> 16) & 0xff; - dev->dev_addr[4] = (mac2 >> 8) & 0xff; - dev->dev_addr[5] = mac2 & 0xff; - - 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 (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { - ap->pci_using_dac = 1; - } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { - ap->pci_using_dac = 0; - } else { - 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 = pci_alloc_consistent(ap->pdev, sizeof(struct ace_info), - &ap->info_dma))) { - ecode = -EAGAIN; - goto init_error; - } - ap->info = info; - - /* - * Get the memory for the skb rings. - */ - if (!(ap->skb = kmalloc(sizeof(struct ace_skb), GFP_KERNEL))) { - 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 - - memset(ap->info, 0, sizeof(struct ace_info)); - memset(ap->skb, 0, sizeof(struct ace_skb)); - - 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) -{ - 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_tasklet(unsigned long arg) -{ - struct net_device *dev = (struct net_device *) arg; - struct ace_private *ap = netdev_priv(dev); - 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->tasklet_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/tasklet 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 = pci_map_page(ap->pdev, virt_to_page(skb->data), - offset_in_page(skb->data), - ACE_STD_BUFSIZE, - PCI_DMA_FROMDEVICE); - 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 = pci_map_page(ap->pdev, virt_to_page(skb->data), - offset_in_page(skb->data), - ACE_MINI_BUFSIZE, - PCI_DMA_FROMDEVICE); - 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 = pci_map_page(ap->pdev, virt_to_page(skb->data), - offset_in_page(skb->data), - ACE_JUMBO_BUFSIZE, - PCI_DMA_FROMDEVICE); - 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 *rxdesc, *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; - rxdesc = &ap->rx_std_ring[skbidx]; - std_count++; - break; - case BD_FLG_JUMBO: - rip = &ap->skb->rx_jumbo_skbuff[skbidx]; - mapsize = ACE_JUMBO_BUFSIZE; - rxdesc = &ap->rx_jumbo_ring[skbidx]; - atomic_dec(&ap->cur_jumbo_bufs); - break; - case BD_FLG_MINI: - rip = &ap->skb->rx_mini_skbuff[skbidx]; - mapsize = ACE_MINI_BUFSIZE; - rxdesc = &ap->rx_mini_ring[skbidx]; - 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; - pci_unmap_page(ap->pdev, - dma_unmap_addr(rip, mapping), - mapsize, - PCI_DMA_FROMDEVICE); - 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, 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)) { - pci_unmap_page(ap->pdev, dma_unmap_addr(info, mapping), - dma_unmap_len(info, maplen), - PCI_DMA_TODEVICE); - dma_unmap_len_set(info, maplen, 0); - } - - if (skb) { - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - dev_kfree_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_tasklet = 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_tasklet = 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_tasklet = 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_tasklet = 1; - } - } - if (run_tasklet && !ap->tasklet_pending) { - ap->tasklet_pending = 1; - tasklet_schedule(&ap->ace_tasklet); - } - } - - 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 - */ - tasklet_init(&ap->ace_tasklet, ace_tasklet, (unsigned long)dev); - 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); - - tasklet_kill(&ap->ace_tasklet); - - /* - * 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)); - pci_unmap_page(ap->pdev, dma_unmap_addr(info, mapping), - dma_unmap_len(info, maplen), - PCI_DMA_TODEVICE); - 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 = pci_map_page(ap->pdev, virt_to_page(skb->data), - offset_in_page(skb->data), - skb->len, PCI_DMA_TODEVICE); - - 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 (vlan_tx_tag_present(skb)) { - flagsize |= BD_FLG_VLAN_TAG; - vlan_tag = vlan_tx_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, len = 0; - - 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 (vlan_tx_tag_present(skb)) { - flagsize |= BD_FLG_VLAN_TAG; - vlan_tag = vlan_tx_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++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - struct tx_ring_info *info; - - len += frag->size; - info = ap->skb->tx_skbuff + idx; - desc = ap->tx_ring + idx; - - mapping = pci_map_page(ap->pdev, frag->page, - frag->page_offset, frag->size, - PCI_DMA_TODEVICE); - - flagsize = (frag->size << 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, frag->size); - 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; - - if (new_mtu > ACE_JUMBO_MTU) - return -EINVAL; - - writel(new_mtu + ETH_HLEN + 4, ®s->IfMtu); - 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_settings(struct net_device *dev, struct ethtool_cmd *ecmd) -{ - struct ace_private *ap = netdev_priv(dev); - struct ace_regs __iomem *regs = ap->regs; - u32 link; - - memset(ecmd, 0, sizeof(struct ethtool_cmd)); - ecmd->supported = - (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | - SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | - SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full | - SUPPORTED_Autoneg | SUPPORTED_FIBRE); - - ecmd->port = PORT_FIBRE; - ecmd->transceiver = XCVR_INTERNAL; - - link = readl(®s->GigLnkState); - if (link & LNK_1000MB) - ethtool_cmd_speed_set(ecmd, SPEED_1000); - else { - link = readl(®s->FastLnkState); - if (link & LNK_100MB) - ethtool_cmd_speed_set(ecmd, SPEED_100); - else if (link & LNK_10MB) - ethtool_cmd_speed_set(ecmd, SPEED_10); - else - ethtool_cmd_speed_set(ecmd, 0); - } - if (link & LNK_FULL_DUPLEX) - ecmd->duplex = DUPLEX_FULL; - else - ecmd->duplex = DUPLEX_HALF; - - if (link & LNK_NEGOTIATE) - ecmd->autoneg = AUTONEG_ENABLE; - else - ecmd->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 - ecmd->maxtxpkt = readl(®s->TuneMaxTxDesc); - ecmd->maxrxpkt = readl(®s->TuneMaxRxDesc); - - return 0; -} - -static int ace_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) -{ - 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 (ecmd->autoneg == AUTONEG_ENABLE) - link |= LNK_NEGOTIATE; - if (ethtool_cmd_speed(ecmd) != speed) { - link &= ~(LNK_1000MB | LNK_100MB | LNK_10MB); - switch (ethtool_cmd_speed(ecmd)) { - case SPEED_1000: - link |= LNK_1000MB; - break; - case SPEED_100: - link |= LNK_100MB; - break; - case SPEED_10: - link |= LNK_10MB; - break; - } - } - - if (ecmd->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); - - strlcpy(info->driver, "acenic", sizeof(info->driver)); - snprintf(info->version, sizeof(info->version), "%i.%i.%i", - ap->firmware_major, ap->firmware_minor, - ap->firmware_fix); - - if (ap->pdev) - strlcpy(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; - u8 *da; - struct cmd cmd; - - if(netif_running(dev)) - return -EBUSY; - - memcpy(dev->dev_addr, addr->sa_data,dev->addr_len); - - da = (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 __devinit 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 __devinit 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 __devinit 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 __devinit 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 __devinit 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 __devinit 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 __devinit 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 __devinit 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; -} |
