diff options
Diffstat (limited to 'drivers/net/tokenring/3c359.c')
| -rw-r--r-- | drivers/net/tokenring/3c359.c | 1830 |
1 files changed, 1830 insertions, 0 deletions
diff --git a/drivers/net/tokenring/3c359.c b/drivers/net/tokenring/3c359.c new file mode 100644 index 000000000000..0d1dcf421771 --- /dev/null +++ b/drivers/net/tokenring/3c359.c @@ -0,0 +1,1830 @@ +/* + * 3c359.c (c) 2000 Mike Phillips (mikep@linuxtr.net) All Rights Reserved + * + * Linux driver for 3Com 3c359 Tokenlink Velocity XL PCI NIC + * + * Base Driver Olympic: + * Written 1999 Peter De Schrijver & Mike Phillips + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + * 7/17/00 - Clean up, version number 0.9.0. Ready to release to the world. + * + * 2/16/01 - Port up to kernel 2.4.2 ready for submission into the kernel. + * 3/05/01 - Last clean up stuff before submission. + * 2/15/01 - Finally, update to new pci api. + * + * To Do: + */ + +/* + * Technical Card Details + * + * All access to data is done with 16/8 bit transfers. The transfer + * method really sucks. You can only read or write one location at a time. + * + * Also, the microcode for the card must be uploaded if the card does not have + * the flashrom on board. This is a 28K bloat in the driver when compiled + * as a module. + * + * Rx is very simple, status into a ring of descriptors, dma data transfer, + * interrupts to tell us when a packet is received. + * + * Tx is a little more interesting. Similar scenario, descriptor and dma data + * transfers, but we don't have to interrupt the card to tell it another packet + * is ready for transmission, we are just doing simple memory writes, not io or mmio + * writes. The card can be set up to simply poll on the next + * descriptor pointer and when this value is non-zero will automatically download + * the next packet. The card then interrupts us when the packet is done. + * + */ + +#define XL_DEBUG 0 + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/timer.h> +#include <linux/in.h> +#include <linux/ioport.h> +#include <linux/string.h> +#include <linux/proc_fs.h> +#include <linux/ptrace.h> +#include <linux/skbuff.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/trdevice.h> +#include <linux/stddef.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/spinlock.h> +#include <linux/bitops.h> + +#include <net/checksum.h> + +#include <asm/io.h> +#include <asm/system.h> + +#include "3c359.h" + +static char version[] __devinitdata = +"3c359.c v1.2.0 2/17/01 - Mike Phillips (mikep@linuxtr.net)" ; + +MODULE_AUTHOR("Mike Phillips <mikep@linuxtr.net>") ; +MODULE_DESCRIPTION("3Com 3C359 Velocity XL Token Ring Adapter Driver \n") ; + +/* Module paramters */ + +/* Ring Speed 0,4,16 + * 0 = Autosense + * 4,16 = Selected speed only, no autosense + * This allows the card to be the first on the ring + * and become the active monitor. + * + * WARNING: Some hubs will allow you to insert + * at the wrong speed. + * + * The adapter will _not_ fail to open if there are no + * active monitors on the ring, it will simply open up in + * its last known ringspeed if no ringspeed is specified. + */ + +static int ringspeed[XL_MAX_ADAPTERS] = {0,} ; + +module_param_array(ringspeed, int, NULL, 0); +MODULE_PARM_DESC(ringspeed,"3c359: Ringspeed selection - 4,16 or 0") ; + +/* Packet buffer size */ + +static int pkt_buf_sz[XL_MAX_ADAPTERS] = {0,} ; + +module_param_array(pkt_buf_sz, int, NULL, 0) ; +MODULE_PARM_DESC(pkt_buf_sz,"3c359: Initial buffer size") ; +/* Message Level */ + +static int message_level[XL_MAX_ADAPTERS] = {0,} ; + +module_param_array(message_level, int, NULL, 0) ; +MODULE_PARM_DESC(message_level, "3c359: Level of reported messages \n") ; +/* + * This is a real nasty way of doing this, but otherwise you + * will be stuck with 1555 lines of hex #'s in the code. + */ + +#include "3c359_microcode.h" + +static struct pci_device_id xl_pci_tbl[] = +{ + {PCI_VENDOR_ID_3COM,PCI_DEVICE_ID_3COM_3C359, PCI_ANY_ID, PCI_ANY_ID, }, + { } /* terminate list */ +}; +MODULE_DEVICE_TABLE(pci,xl_pci_tbl) ; + +static int xl_init(struct net_device *dev); +static int xl_open(struct net_device *dev); +static int xl_open_hw(struct net_device *dev) ; +static int xl_hw_reset(struct net_device *dev); +static int xl_xmit(struct sk_buff *skb, struct net_device *dev); +static void xl_dn_comp(struct net_device *dev); +static int xl_close(struct net_device *dev); +static void xl_set_rx_mode(struct net_device *dev); +static irqreturn_t xl_interrupt(int irq, void *dev_id, struct pt_regs *regs); +static struct net_device_stats * xl_get_stats(struct net_device *dev); +static int xl_set_mac_address(struct net_device *dev, void *addr) ; +static void xl_arb_cmd(struct net_device *dev); +static void xl_asb_cmd(struct net_device *dev) ; +static void xl_srb_cmd(struct net_device *dev, int srb_cmd) ; +static void xl_wait_misr_flags(struct net_device *dev) ; +static int xl_change_mtu(struct net_device *dev, int mtu); +static void xl_srb_bh(struct net_device *dev) ; +static void xl_asb_bh(struct net_device *dev) ; +static void xl_reset(struct net_device *dev) ; +static void xl_freemem(struct net_device *dev) ; + + +/* EEProm Access Functions */ +static u16 xl_ee_read(struct net_device *dev, int ee_addr) ; +static void xl_ee_write(struct net_device *dev, int ee_addr, u16 ee_value) ; + +/* Debugging functions */ +#if XL_DEBUG +static void print_tx_state(struct net_device *dev) ; +static void print_rx_state(struct net_device *dev) ; + +static void print_tx_state(struct net_device *dev) +{ + + struct xl_private *xl_priv = (struct xl_private *)dev->priv ; + struct xl_tx_desc *txd ; + u8 __iomem *xl_mmio = xl_priv->xl_mmio ; + int i ; + + printk("tx_ring_head: %d, tx_ring_tail: %d, free_ent: %d \n",xl_priv->tx_ring_head, + xl_priv->tx_ring_tail, xl_priv->free_ring_entries) ; + printk("Ring , Address , FSH , DnNextPtr, Buffer, Buffer_Len \n"); + for (i = 0; i < 16; i++) { + txd = &(xl_priv->xl_tx_ring[i]) ; + printk("%d, %08lx, %08x, %08x, %08x, %08x \n", i, virt_to_bus(txd), + txd->framestartheader, txd->dnnextptr, txd->buffer, txd->buffer_length ) ; + } + + printk("DNLISTPTR = %04x \n", readl(xl_mmio + MMIO_DNLISTPTR) ); + + printk("DmaCtl = %04x \n", readl(xl_mmio + MMIO_DMA_CTRL) ); + printk("Queue status = %0x \n",netif_running(dev) ) ; +} + +static void print_rx_state(struct net_device *dev) +{ + + struct xl_private *xl_priv = (struct xl_private *)dev->priv ; + struct xl_rx_desc *rxd ; + u8 __iomem *xl_mmio = xl_priv->xl_mmio ; + int i ; + + printk("rx_ring_tail: %d \n", xl_priv->rx_ring_tail) ; + printk("Ring , Address , FrameState , UPNextPtr, FragAddr, Frag_Len \n"); + for (i = 0; i < 16; i++) { + /* rxd = (struct xl_rx_desc *)xl_priv->rx_ring_dma_addr + (i * sizeof(struct xl_rx_desc)) ; */ + rxd = &(xl_priv->xl_rx_ring[i]) ; + printk("%d, %08lx, %08x, %08x, %08x, %08x \n", i, virt_to_bus(rxd), + rxd->framestatus, rxd->upnextptr, rxd->upfragaddr, rxd->upfraglen ) ; + } + + printk("UPLISTPTR = %04x \n", readl(xl_mmio + MMIO_UPLISTPTR) ); + + printk("DmaCtl = %04x \n", readl(xl_mmio + MMIO_DMA_CTRL) ); + printk("Queue status = %0x \n",netif_running(dev) ) ; +} +#endif + +/* + * Read values from the on-board EEProm. This looks very strange + * but you have to wait for the EEProm to get/set the value before + * passing/getting the next value from the nic. As with all requests + * on this nic it has to be done in two stages, a) tell the nic which + * memory address you want to access and b) pass/get the value from the nic. + * With the EEProm, you have to wait before and inbetween access a) and b). + * As this is only read at initialization time and the wait period is very + * small we shouldn't have to worry about scheduling issues. + */ + +static u16 xl_ee_read(struct net_device *dev, int ee_addr) +{ + struct xl_private *xl_priv = (struct xl_private *)dev->priv ; + u8 __iomem *xl_mmio = xl_priv->xl_mmio ; + + /* Wait for EEProm to not be busy */ + writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ; + + /* Tell EEProm what we want to do and where */ + writel(IO_WORD_WRITE | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(EEREAD + ee_addr, xl_mmio + MMIO_MACDATA) ; + + /* Wait for EEProm to not be busy */ + writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ; + + /* Tell EEProm what we want to do and where */ + writel(IO_WORD_WRITE | EECONTROL , xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(EEREAD + ee_addr, xl_mmio + MMIO_MACDATA) ; + + /* Finally read the value from the EEProm */ + writel(IO_WORD_READ | EEDATA , xl_mmio + MMIO_MAC_ACCESS_CMD) ; + return readw(xl_mmio + MMIO_MACDATA) ; +} + +/* + * Write values to the onboard eeprom. As with eeprom read you need to + * set which location to write, wait, value to write, wait, with the + * added twist of having to enable eeprom writes as well. + */ + +static void xl_ee_write(struct net_device *dev, int ee_addr, u16 ee_value) +{ + struct xl_private *xl_priv = (struct xl_private *)dev->priv ; + u8 __iomem *xl_mmio = xl_priv->xl_mmio ; + + /* Wait for EEProm to not be busy */ + writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ; + + /* Enable write/erase */ + writel(IO_WORD_WRITE | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(EE_ENABLE_WRITE, xl_mmio + MMIO_MACDATA) ; + + /* Wait for EEProm to not be busy */ + writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ; + + /* Put the value we want to write into EEDATA */ + writel(IO_WORD_WRITE | EEDATA, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(ee_value, xl_mmio + MMIO_MACDATA) ; + + /* Tell EEProm to write eevalue into ee_addr */ + writel(IO_WORD_WRITE | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(EEWRITE + ee_addr, xl_mmio + MMIO_MACDATA) ; + + /* Wait for EEProm to not be busy, to ensure write gets done */ + writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ; + + return ; +} + +int __devinit xl_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct net_device *dev ; + struct xl_private *xl_priv ; + static int card_no = -1 ; + int i ; + + card_no++ ; + + if (pci_enable_device(pdev)) { + return -ENODEV ; + } + + pci_set_master(pdev); + + if ((i = pci_request_regions(pdev,"3c359"))) { + return i ; + } ; + + /* + * Allowing init_trdev to allocate the dev->priv structure will align xl_private + * on a 32 bytes boundary which we need for the rx/tx descriptors + */ + + dev = alloc_trdev(sizeof(struct xl_private)) ; + if (!dev) { + pci_release_regions(pdev) ; + return -ENOMEM ; + } + xl_priv = dev->priv ; + +#if XL_DEBUG + printk("pci_device: %p, dev:%p, dev->priv: %p, ba[0]: %10x, ba[1]:%10x\n", + pdev, dev, dev->priv, (unsigned int)pdev->resource[0].start, (unsigned int)pdev->resource[1].start) ; +#endif + + dev->irq=pdev->irq; + dev->base_addr=pci_resource_start(pdev,0) ; + xl_priv->xl_card_name = pci_name(pdev); + xl_priv->xl_mmio=ioremap(pci_resource_start(pdev,1), XL_IO_SPACE); + xl_priv->pdev = pdev ; + + if ((pkt_buf_sz[card_no] < 100) || (pkt_buf_sz[card_no] > 18000) ) + xl_priv->pkt_buf_sz = PKT_BUF_SZ ; + else + xl_priv->pkt_buf_sz = pkt_buf_sz[card_no] ; + + dev->mtu = xl_priv->pkt_buf_sz - TR_HLEN ; + xl_priv->xl_ring_speed = ringspeed[card_no] ; + xl_priv->xl_message_level = message_level[card_no] ; + xl_priv->xl_functional_addr[0] = xl_priv->xl_functional_addr[1] = xl_priv->xl_functional_addr[2] = xl_priv->xl_functional_addr[3] = 0 ; + xl_priv->xl_copy_all_options = 0 ; + + if((i = xl_init(dev))) { + iounmap(xl_priv->xl_mmio) ; + free_netdev(dev) ; + pci_release_regions(pdev) ; + return i ; + } + + dev->open=&xl_open; + dev->hard_start_xmit=&xl_xmit; + dev->change_mtu=&xl_change_mtu; + dev->stop=&xl_close; + dev->do_ioctl=NULL; + dev->set_multicast_list=&xl_set_rx_mode; + dev->get_stats=&xl_get_stats ; + dev->set_mac_address=&xl_set_mac_address ; + SET_MODULE_OWNER(dev); + SET_NETDEV_DEV(dev, &pdev->dev); + + pci_set_drvdata(pdev,dev) ; + if ((i = register_netdev(dev))) { + printk(KERN_ERR "3C359, register netdev failed\n") ; + pci_set_drvdata(pdev,NULL) ; + iounmap(xl_priv->xl_mmio) ; + free_netdev(dev) ; + pci_release_regions(pdev) ; + return i ; + } + + printk(KERN_INFO "3C359: %s registered as: %s\n",xl_priv->xl_card_name,dev->name) ; + + return 0; +} + + +static int __init xl_init(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *)dev->priv ; + + printk(KERN_INFO "%s \n", version); + printk(KERN_INFO "%s: I/O at %hx, MMIO at %p, using irq %d\n", + xl_priv->xl_card_name, (unsigned int)dev->base_addr ,xl_priv->xl_mmio, dev->irq); + + spin_lock_init(&xl_priv->xl_lock) ; + + return xl_hw_reset(dev) ; + +} + + +/* + * Hardware reset. This needs to be a separate entity as we need to reset the card + * when we change the EEProm settings. + */ + +static int xl_hw_reset(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *)dev->priv ; + u8 __iomem *xl_mmio = xl_priv->xl_mmio ; + unsigned long t ; + u16 i ; + u16 result_16 ; + u8 result_8 ; + u16 start ; + int j ; + + /* + * Reset the card. If the card has got the microcode on board, we have + * missed the initialization interrupt, so we must always do this. + */ + + writew( GLOBAL_RESET, xl_mmio + MMIO_COMMAND ) ; + + /* + * Must wait for cmdInProgress bit (12) to clear before continuing with + * card configuration. + */ + + t=jiffies; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { + schedule(); + if(jiffies-t > 40*HZ) { + printk(KERN_ERR "%s: 3COM 3C359 Velocity XL card not responding to global reset.\n", dev->name); + return -ENODEV; + } + } + + /* + * Enable pmbar by setting bit in CPAttention + */ + + writel( (IO_BYTE_READ | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + result_8 = readb(xl_mmio + MMIO_MACDATA) ; + result_8 = result_8 | CPA_PMBARVIS ; + writel( (IO_BYTE_WRITE | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(result_8, xl_mmio + MMIO_MACDATA) ; + + /* + * Read cpHold bit in pmbar, if cleared we have got Flashrom on board. + * If not, we need to upload the microcode to the card + */ + + writel( (IO_WORD_READ | PMBAR),xl_mmio + MMIO_MAC_ACCESS_CMD); + +#if XL_DEBUG + printk(KERN_INFO "Read from PMBAR = %04x \n", readw(xl_mmio + MMIO_MACDATA)) ; +#endif + + if ( readw( (xl_mmio + MMIO_MACDATA)) & PMB_CPHOLD ) { + + /* Set PmBar, privateMemoryBase bits (8:2) to 0 */ + + writel( (IO_WORD_READ | PMBAR),xl_mmio + MMIO_MAC_ACCESS_CMD); + result_16 = readw(xl_mmio + MMIO_MACDATA) ; + result_16 = result_16 & ~((0x7F) << 2) ; + writel( (IO_WORD_WRITE | PMBAR), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(result_16,xl_mmio + MMIO_MACDATA) ; + + /* Set CPAttention, memWrEn bit */ + + writel( (IO_BYTE_READ | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + result_8 = readb(xl_mmio + MMIO_MACDATA) ; + result_8 = result_8 | CPA_MEMWREN ; + writel( (IO_BYTE_WRITE | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(result_8, xl_mmio + MMIO_MACDATA) ; + + /* + * Now to write the microcode into the shared ram + * The microcode must finish at position 0xFFFF, so we must subtract + * to get the start position for the code + */ + + start = (0xFFFF - (mc_size) + 1 ) ; /* Looks strange but ensures compiler only uses 16 bit unsigned int for this */ + + printk(KERN_INFO "3C359: Uploading Microcode: "); + + for (i = start, j = 0; j < mc_size; i++, j++) { + writel(MEM_BYTE_WRITE | 0XD0000 | i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(microcode[j],xl_mmio + MMIO_MACDATA) ; + if (j % 1024 == 0) + printk("."); + } + printk("\n") ; + + for (i=0;i < 16; i++) { + writel( (MEM_BYTE_WRITE | 0xDFFF0) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(microcode[mc_size - 16 + i], xl_mmio + MMIO_MACDATA) ; + } + + /* + * Have to write the start address of the upload to FFF4, but + * the address must be >> 4. You do not want to know how long + * it took me to discover this. + */ + + writel(MEM_WORD_WRITE | 0xDFFF4, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(start >> 4, xl_mmio + MMIO_MACDATA); + + /* Clear the CPAttention, memWrEn Bit */ + + writel( (IO_BYTE_READ | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + result_8 = readb(xl_mmio + MMIO_MACDATA) ; + result_8 = result_8 & ~CPA_MEMWREN ; + writel( (IO_BYTE_WRITE | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(result_8, xl_mmio + MMIO_MACDATA) ; + + /* Clear the cpHold bit in pmbar */ + + writel( (IO_WORD_READ | PMBAR),xl_mmio + MMIO_MAC_ACCESS_CMD); + result_16 = readw(xl_mmio + MMIO_MACDATA) ; + result_16 = result_16 & ~PMB_CPHOLD ; + writel( (IO_WORD_WRITE | PMBAR), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(result_16,xl_mmio + MMIO_MACDATA) ; + + + } /* If microcode upload required */ + + /* + * The card should now go though a self test procedure and get itself ready + * to be opened, we must wait for an srb response with the initialization + * information. + */ + +#if XL_DEBUG + printk(KERN_INFO "%s: Microcode uploaded, must wait for the self test to complete\n", dev->name); +#endif + + writew(SETINDENABLE | 0xFFF, xl_mmio + MMIO_COMMAND) ; + + t=jiffies; + while ( !(readw(xl_mmio + MMIO_INTSTATUS_AUTO) & INTSTAT_SRB) ) { + schedule(); + if(jiffies-t > 15*HZ) { + printk(KERN_ERR "3COM 3C359 Velocity XL card not responding.\n"); + return -ENODEV; + } + } + + /* + * Write the RxBufArea with D000, RxEarlyThresh, TxStartThresh, + * DnPriReqThresh, read the tech docs if you want to know what + * values they need to be. + */ + + writel(MMIO_WORD_WRITE | RXBUFAREA, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(0xD000, xl_mmio + MMIO_MACDATA) ; + + writel(MMIO_WORD_WRITE | RXEARLYTHRESH, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(0X0020, xl_mmio + MMIO_MACDATA) ; + + writew( SETTXSTARTTHRESH | 0x40 , xl_mmio + MMIO_COMMAND) ; + + writeb(0x04, xl_mmio + MMIO_DNBURSTTHRESH) ; + writeb(0x04, xl_mmio + DNPRIREQTHRESH) ; + + /* + * Read WRBR to provide the location of the srb block, have to use byte reads not word reads. + * Tech docs have this wrong !!!! + */ + + writel(MMIO_BYTE_READ | WRBR, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + xl_priv->srb = readb(xl_mmio + MMIO_MACDATA) << 8 ; + writel( (MMIO_BYTE_READ | WRBR) + 1, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + xl_priv->srb = xl_priv->srb | readb(xl_mmio + MMIO_MACDATA) ; + +#if XL_DEBUG + writel(IO_WORD_READ | SWITCHSETTINGS, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + if ( readw(xl_mmio + MMIO_MACDATA) & 2) { + printk(KERN_INFO "Default ring speed 4 mbps \n") ; + } else { + printk(KERN_INFO "Default ring speed 16 mbps \n") ; + } + printk(KERN_INFO "%s: xl_priv->srb = %04x\n",xl_priv->xl_card_name, xl_priv->srb); +#endif + + return 0; +} + +static int xl_open(struct net_device *dev) +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + u8 __iomem *xl_mmio = xl_priv->xl_mmio ; + u8 i ; + u16 hwaddr[3] ; /* Should be u8[6] but we get word return values */ + int open_err ; + + u16 switchsettings, switchsettings_eeprom ; + + if(request_irq(dev->irq, &xl_interrupt, SA_SHIRQ , "3c359", dev)) { + return -EAGAIN; + } + + /* + * Read the information from the EEPROM that we need. I know we + * should use ntohs, but the word gets stored reversed in the 16 + * bit field anyway and it all works its self out when we memcpy + * it into dev->dev_addr. + */ + + hwaddr[0] = xl_ee_read(dev,0x10) ; + hwaddr[1] = xl_ee_read(dev,0x11) ; + hwaddr[2] = xl_ee_read(dev,0x12) ; + + /* Ring speed */ + + switchsettings_eeprom = xl_ee_read(dev,0x08) ; + switchsettings = switchsettings_eeprom ; + + if (xl_priv->xl_ring_speed != 0) { + if (xl_priv->xl_ring_speed == 4) + switchsettings = switchsettings | 0x02 ; + else + switchsettings = switchsettings & ~0x02 ; + } + + /* Only write EEProm if there has been a change */ + if (switchsettings != switchsettings_eeprom) { + xl_ee_write(dev,0x08,switchsettings) ; + /* Hardware reset after changing EEProm */ + xl_hw_reset(dev) ; + } + + memcpy(dev->dev_addr,hwaddr,dev->addr_len) ; + + open_err = xl_open_hw(dev) ; + + /* + * This really needs to be cleaned up with better error reporting. + */ + + if (open_err != 0) { /* Something went wrong with the open command */ + if (open_err & 0x07) { /* Wrong speed, retry at different speed */ + printk(KERN_WARNING "%s: Open Error, retrying at different ringspeed \n", dev->name) ; + switchsettings = switchsettings ^ 2 ; + xl_ee_write(dev,0x08,switchsettings) ; + xl_hw_reset(dev) ; + open_err = xl_open_hw(dev) ; + if (open_err != 0) { + printk(KERN_WARNING "%s: Open error returned a second time, we're bombing out now\n", dev->name); + free_irq(dev->irq,dev) ; + return -ENODEV ; + } + } else { + printk(KERN_WARNING "%s: Open Error = %04x\n", dev->name, open_err) ; + free_irq(dev->irq,dev) ; + return -ENODEV ; + } + } + + /* + * Now to set up the Rx and Tx buffer structures + */ + /* These MUST be on 8 byte boundaries */ + xl_priv->xl_tx_ring = kmalloc((sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE) + 7, GFP_DMA | GFP_KERNEL) ; + if (xl_priv->xl_tx_ring == NULL) { + printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers.\n", + dev->name); + free_irq(dev->irq,dev); + return -ENOMEM; + } + xl_priv->xl_rx_ring = kmalloc((sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE) +7, GFP_DMA | GFP_KERNEL) ; + if (xl_priv->xl_tx_ring == NULL) { + printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers.\n", + dev->name); + free_irq(dev->irq,dev); + kfree(xl_priv->xl_tx_ring); + return -ENOMEM; + } + memset(xl_priv->xl_tx_ring,0,sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE) ; + memset(xl_priv->xl_rx_ring,0,sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE) ; + + /* Setup Rx Ring */ + for (i=0 ; i < XL_RX_RING_SIZE ; i++) { + struct sk_buff *skb ; + + skb = dev_alloc_skb(xl_priv->pkt_buf_sz) ; + if (skb==NULL) + break ; + + skb->dev = dev ; + xl_priv->xl_rx_ring[i].upfragaddr = pci_map_single(xl_priv->pdev, skb->data,xl_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE) ; + xl_priv->xl_rx_ring[i].upfraglen = xl_priv->pkt_buf_sz | RXUPLASTFRAG; + xl_priv->rx_ring_skb[i] = skb ; + } + + if (i==0) { + printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers. Adapter disabled \n",dev->name) ; + free_irq(dev->irq,dev) ; + return -EIO ; + } + + xl_priv->rx_ring_no = i ; + xl_priv->rx_ring_tail = 0 ; + xl_priv->rx_ring_dma_addr = pci_map_single(xl_priv->pdev,xl_priv->xl_rx_ring, sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE, PCI_DMA_TODEVICE) ; + for (i=0;i<(xl_priv->rx_ring_no-1);i++) { + xl_priv->xl_rx_ring[i].upnextptr = xl_priv->rx_ring_dma_addr + (sizeof (struct xl_rx_desc) * (i+1)) ; + } + xl_priv->xl_rx_ring[i].upnextptr = 0 ; + + writel(xl_priv->rx_ring_dma_addr, xl_mmio + MMIO_UPLISTPTR) ; + + /* Setup Tx Ring */ + + xl_priv->tx_ring_dma_addr = pci_map_single(xl_priv->pdev,xl_priv->xl_tx_ring, sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE,PCI_DMA_TODEVICE) ; + + xl_priv->tx_ring_head = 1 ; + xl_priv->tx_ring_tail = 255 ; /* Special marker for first packet */ + xl_priv->free_ring_entries = XL_TX_RING_SIZE ; + + /* + * Setup the first dummy DPD entry for polling to start working. + */ + + xl_priv->xl_tx_ring[0].framestartheader = TXDPDEMPTY ; + xl_priv->xl_tx_ring[0].buffer = 0 ; + xl_priv->xl_tx_ring[0].buffer_length = 0 ; + xl_priv->xl_tx_ring[0].dnnextptr = 0 ; + + writel(xl_priv->tx_ring_dma_addr, xl_mmio + MMIO_DNLISTPTR) ; + writel(DNUNSTALL, xl_mmio + MMIO_COMMAND) ; + writel(UPUNSTALL, xl_mmio + MMIO_COMMAND) ; + writel(DNENABLE, xl_mmio + MMIO_COMMAND) ; + writeb(0x40, xl_mmio + MMIO_DNPOLL) ; + + /* + * Enable interrupts on the card + */ + + writel(SETINTENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ; + writel(SETINDENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ; + + netif_start_queue(dev) ; + return 0; + +} + +static int xl_open_hw(struct net_device *dev) +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + u8 __iomem *xl_mmio = xl_priv->xl_mmio ; + u16 vsoff ; + char ver_str[33]; + int open_err ; + int i ; + unsigned long t ; + + /* + * Okay, let's build up the Open.NIC srb command + * + */ + + writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(OPEN_NIC, xl_mmio + MMIO_MACDATA) ; + + /* + * Use this as a test byte, if it comes back with the same value, the command didn't work + */ + + writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb)+ 2, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0xff,xl_mmio + MMIO_MACDATA) ; + + /* Open options */ + writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + 8, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0x00, xl_mmio + MMIO_MACDATA) ; + writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + 9, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0x00, xl_mmio + MMIO_MACDATA) ; + + /* + * Node address, be careful here, the docs say you can just put zeros here and it will use + * the hardware address, it doesn't, you must include the node address in the open command. + */ + + if (xl_priv->xl_laa[0]) { /* If using a LAA address */ + for (i=10;i<16;i++) { + writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(xl_priv->xl_laa[i],xl_mmio + MMIO_MACDATA) ; + } + memcpy(dev->dev_addr,xl_priv->xl_laa,dev->addr_len) ; + } else { /* Regular hardware address */ + for (i=10;i<16;i++) { + writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(dev->dev_addr[i-10], xl_mmio + MMIO_MACDATA) ; + } + } + + /* Default everything else to 0 */ + for (i = 16; i < 34; i++) { + writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0x00,xl_mmio + MMIO_MACDATA) ; + } + + /* + * Set the csrb bit in the MISR register + */ + + xl_wait_misr_flags(dev) ; + writel(MEM_BYTE_WRITE | MF_CSRB, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0xFF, xl_mmio + MMIO_MACDATA) ; + writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(MISR_CSRB , xl_mmio + MMIO_MACDATA) ; + + /* + * Now wait for the command to run + */ + + t=jiffies; + while (! (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_SRB)) { + schedule(); + if(jiffies-t > 40*HZ) { + printk(KERN_ERR "3COM 3C359 Velocity XL card not responding.\n"); + break ; + } + } + + /* + * Let's interpret the open response + */ + + writel( (MEM_BYTE_READ | 0xD0000 | xl_priv->srb)+2, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + if (readb(xl_mmio + MMIO_MACDATA)!=0) { + open_err = readb(xl_mmio + MMIO_MACDATA) << 8 ; + writel( (MEM_BYTE_READ | 0xD0000 | xl_priv->srb) + 7, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + open_err |= readb(xl_mmio + MMIO_MACDATA) ; + return open_err ; + } else { + writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 8, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + xl_priv->asb = ntohs(readw(xl_mmio + MMIO_MACDATA)) ; + printk(KERN_INFO "%s: Adapter Opened Details: ",dev->name) ; + printk("ASB: %04x",xl_priv->asb ) ; + writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 10, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + printk(", SRB: %04x",ntohs(readw(xl_mmio + MMIO_MACDATA)) ) ; + + writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 12, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + xl_priv->arb = ntohs(readw(xl_mmio + MMIO_MACDATA)) ; + printk(", ARB: %04x \n",xl_priv->arb ) ; + writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 14, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + vsoff = ntohs(readw(xl_mmio + MMIO_MACDATA)) ; + + /* + * Interesting, sending the individual characters directly to printk was causing klogd to use + * use 100% of processor time, so we build up the string and print that instead. + */ + + for (i=0;i<0x20;i++) { + writel( (MEM_BYTE_READ | 0xD0000 | vsoff) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + ver_str[i] = readb(xl_mmio + MMIO_MACDATA) ; + } + ver_str[i] = '\0' ; + printk(KERN_INFO "%s: Microcode version String: %s \n",dev->name,ver_str); + } + + /* + * Issue the AckInterrupt + */ + writew(ACK_INTERRUPT | SRBRACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + + return 0 ; +} + +/* + * There are two ways of implementing rx on the 359 NIC, either + * interrupt driven or polling. We are going to uses interrupts, + * it is the easier way of doing things. + * + * The Rx works with a ring of Rx descriptors. At initialise time the ring + * entries point to the next entry except for the last entry in the ring + * which points to 0. The card is programmed with the location of the first + * available descriptor and keeps reading the next_ptr until next_ptr is set + * to 0. Hopefully with a ring size of 16 the card will never get to read a next_ptr + * of 0. As the Rx interrupt is received we copy the frame up to the protocol layers + * and then point the end of the ring to our current position and point our current + * position to 0, therefore making the current position the last position on the ring. + * The last position on the ring therefore loops continually loops around the rx ring. + * + * rx_ring_tail is the position on the ring to process next. (Think of a snake, the head + * expands as the card adds new packets and we go around eating the tail processing the + * packets.) + * + * Undoubtably it could be streamlined and improved upon, but at the moment it works + * and the fast path through the routine is fine. + * + * adv_rx_ring could be inlined to increase performance, but its called a *lot* of times + * in xl_rx so would increase the size of the function significantly. + */ + +static void adv_rx_ring(struct net_device *dev) /* Advance rx_ring, cut down on bloat in xl_rx */ +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + int prev_ring_loc ; + + prev_ring_loc = (xl_priv->rx_ring_tail + XL_RX_RING_SIZE - 1) & (XL_RX_RING_SIZE - 1); + xl_priv->xl_rx_ring[prev_ring_loc].upnextptr = xl_priv->rx_ring_dma_addr + (sizeof (struct xl_rx_desc) * xl_priv->rx_ring_tail) ; + xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].framestatus = 0 ; + xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upnextptr = 0 ; + xl_priv->rx_ring_tail++ ; + xl_priv->rx_ring_tail &= (XL_RX_RING_SIZE-1) ; + + return ; +} + +static void xl_rx(struct net_device *dev) +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + struct sk_buff *skb, *skb2 ; + int frame_length = 0, copy_len = 0 ; + int temp_ring_loc ; + + /* + * Receive the next frame, loop around the ring until all frames + * have been received. + */ + + while (xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].framestatus & (RXUPDCOMPLETE | RXUPDFULL) ) { /* Descriptor to process */ + + if (xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].framestatus & RXUPDFULL ) { /* UpdFull, Multiple Descriptors used for the frame */ + + /* + * This is a pain, you need to go through all the descriptors until the last one + * for this frame to find the framelength + */ + + temp_ring_loc = xl_priv->rx_ring_tail ; + + while (xl_priv->xl_rx_ring[temp_ring_loc].framestatus & RXUPDFULL ) { + temp_ring_loc++ ; + temp_ring_loc &= (XL_RX_RING_SIZE-1) ; + } + + frame_length = xl_priv->xl_rx_ring[temp_ring_loc].framestatus & 0x7FFF ; + + skb = dev_alloc_skb(frame_length) ; + + if (skb==NULL) { /* No memory for frame, still need to roll forward the rx ring */ + printk(KERN_WARNING "%s: dev_alloc_skb failed - multi buffer !\n", dev->name) ; + while (xl_priv->rx_ring_tail != temp_ring_loc) + adv_rx_ring(dev) ; + + adv_rx_ring(dev) ; /* One more time just for luck :) */ + xl_priv->xl_stats.rx_dropped++ ; + + writel(ACK_INTERRUPT | UPCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ; + return ; + } + + skb->dev = dev ; + + while (xl_priv->rx_ring_tail != temp_ring_loc) { + copy_len = xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfraglen & 0x7FFF ; + frame_length -= copy_len ; + pci_dma_sync_single_for_cpu(xl_priv->pdev,xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr,xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; + memcpy(skb_put(skb,copy_len), xl_priv->rx_ring_skb[xl_priv->rx_ring_tail]->data, copy_len) ; + pci_dma_sync_single_for_device(xl_priv->pdev,xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr,xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; + adv_rx_ring(dev) ; + } + + /* Now we have found the last fragment */ + pci_dma_sync_single_for_cpu(xl_priv->pdev,xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr,xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; + memcpy(skb_put(skb,copy_len), xl_priv->rx_ring_skb[xl_priv->rx_ring_tail]->data, frame_length) ; +/* memcpy(skb_put(skb,frame_length), bus_to_virt(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr), frame_length) ; */ + pci_dma_sync_single_for_device(xl_priv->pdev,xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr,xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; + adv_rx_ring(dev) ; + skb->protocol = tr_type_trans(skb,dev) ; + netif_rx(skb) ; + + } else { /* Single Descriptor Used, simply swap buffers over, fast path */ + + frame_length = xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].framestatus & 0x7FFF ; + + skb = dev_alloc_skb(xl_priv->pkt_buf_sz) ; + + if (skb==NULL) { /* Still need to fix the rx ring */ + printk(KERN_WARNING "%s: dev_alloc_skb failed in rx, single buffer \n",dev->name) ; + adv_rx_ring(dev) ; + xl_priv->xl_stats.rx_dropped++ ; + writel(ACK_INTERRUPT | UPCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ; + return ; + } + + skb->dev = dev ; + + skb2 = xl_priv->rx_ring_skb[xl_priv->rx_ring_tail] ; + pci_unmap_single(xl_priv->pdev, xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr, xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; + skb_put(skb2, frame_length) ; + skb2->protocol = tr_type_trans(skb2,dev) ; + + xl_priv->rx_ring_skb[xl_priv->rx_ring_tail] = skb ; + xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr = pci_map_single(xl_priv->pdev,skb->data,xl_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE) ; + xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfraglen = xl_priv->pkt_buf_sz | RXUPLASTFRAG ; + adv_rx_ring(dev) ; + xl_priv->xl_stats.rx_packets++ ; + xl_priv->xl_stats.rx_bytes += frame_length ; + + netif_rx(skb2) ; + } /* if multiple buffers */ + dev->last_rx = jiffies ; + } /* while packet to do */ + + /* Clear the updComplete interrupt */ + writel(ACK_INTERRUPT | UPCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ; + return ; +} + +/* + * This is ruthless, it doesn't care what state the card is in it will + * completely reset the adapter. + */ + +static void xl_reset(struct net_device *dev) +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + unsigned long t; + + writew( GLOBAL_RESET, xl_mmio + MMIO_COMMAND ) ; + + /* + * Must wait for cmdInProgress bit (12) to clear before continuing with + * card configuration. + */ + + t=jiffies; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { + if(jiffies-t > 40*HZ) { + printk(KERN_ERR "3COM 3C359 Velocity XL card not responding.\n"); + break ; + } + } + +} + +static void xl_freemem(struct net_device *dev) +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv ; + int i ; + + for (i=0;i<XL_RX_RING_SIZE;i++) { + dev_kfree_skb_irq(xl_priv->rx_ring_skb[xl_priv->rx_ring_tail]) ; + pci_unmap_single(xl_priv->pdev,xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr,xl_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE) ; + xl_priv->rx_ring_tail++ ; + xl_priv->rx_ring_tail &= XL_RX_RING_SIZE-1; + } + + /* unmap ring */ + pci_unmap_single(xl_priv->pdev,xl_priv->rx_ring_dma_addr, sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE, PCI_DMA_FROMDEVICE) ; + + pci_unmap_single(xl_priv->pdev,xl_priv->tx_ring_dma_addr, sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE, PCI_DMA_TODEVICE) ; + + kfree(xl_priv->xl_rx_ring) ; + kfree(xl_priv->xl_tx_ring) ; + + return ; +} + +static irqreturn_t xl_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct net_device *dev = (struct net_device *)dev_id; + struct xl_private *xl_priv =(struct xl_private *)dev->priv; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + u16 intstatus, macstatus ; + + if (!dev) { + printk(KERN_WARNING "Device structure dead, aaahhhh !\n") ; + return IRQ_NONE; + } + + intstatus = readw(xl_mmio + MMIO_INTSTATUS) ; + + if (!(intstatus & 1)) /* We didn't generate the interrupt */ + return IRQ_NONE; + + spin_lock(&xl_priv->xl_lock) ; + + /* + * Process the interrupt + */ + /* + * Something fishy going on here, we shouldn't get 0001 ints, not fatal though. + */ + if (intstatus == 0x0001) { + writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + printk(KERN_INFO "%s: 00001 int received \n",dev->name) ; + } else { + if (intstatus & (HOSTERRINT | SRBRINT | ARBCINT | UPCOMPINT | DNCOMPINT | HARDERRINT | (1<<8) | TXUNDERRUN | ASBFINT)) { + + /* + * Host Error. + * It may be possible to recover from this, but usually it means something + * is seriously fubar, so we just close the adapter. + */ + + if (intstatus & HOSTERRINT) { + printk(KERN_WARNING "%s: Host Error, performing global reset, intstatus = %04x \n",dev->name,intstatus) ; + writew( GLOBAL_RESET, xl_mmio + MMIO_COMMAND ) ; + printk(KERN_WARNING "%s: Resetting hardware: \n", dev->name); + netif_stop_queue(dev) ; + xl_freemem(dev) ; + free_irq(dev->irq,dev); + xl_reset(dev) ; + writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + spin_unlock(&xl_priv->xl_lock) ; + return IRQ_HANDLED; + } /* Host Error */ + + if (intstatus & SRBRINT ) { /* Srbc interrupt */ + writel(ACK_INTERRUPT | SRBRACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + if (xl_priv->srb_queued) + xl_srb_bh(dev) ; + } /* SRBR Interrupt */ + + if (intstatus & TXUNDERRUN) { /* Issue DnReset command */ + writel(DNRESET, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { /* Wait for command to run */ + /* !!! FIX-ME !!!! + Must put a timeout check here ! */ + /* Empty Loop */ + } + printk(KERN_WARNING "%s: TX Underrun received \n",dev->name) ; + writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + } /* TxUnderRun */ + + if (intstatus & ARBCINT ) { /* Arbc interrupt */ + xl_arb_cmd(dev) ; + } /* Arbc */ + + if (intstatus & ASBFINT) { + if (xl_priv->asb_queued == 1) { + xl_asb_cmd(dev) ; + } else if (xl_priv->asb_queued == 2) { + xl_asb_bh(dev) ; + } else { + writel(ACK_INTERRUPT | LATCH_ACK | ASBFACK, xl_mmio + MMIO_COMMAND) ; + } + } /* Asbf */ + + if (intstatus & UPCOMPINT ) /* UpComplete */ + xl_rx(dev) ; + + if (intstatus & DNCOMPINT ) /* DnComplete */ + xl_dn_comp(dev) ; + + if (intstatus & HARDERRINT ) { /* Hardware error */ + writel(MMIO_WORD_READ | MACSTATUS, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + macstatus = readw(xl_mmio + MMIO_MACDATA) ; + printk(KERN_WARNING "%s: MacStatusError, details: ", dev->name); + if (macstatus & (1<<14)) + printk(KERN_WARNING "tchk error: Unrecoverable error \n") ; + if (macstatus & (1<<3)) + printk(KERN_WARNING "eint error: Internal watchdog timer expired \n") ; + if (macstatus & (1<<2)) + printk(KERN_WARNING "aint error: Host tried to perform invalid operation \n") ; + printk(KERN_WARNING "Instatus = %02x, macstatus = %02x\n",intstatus,macstatus) ; + printk(KERN_WARNING "%s: Resetting hardware: \n", dev->name); + netif_stop_queue(dev) ; + xl_freemem(dev) ; + free_irq(dev->irq,dev); + unregister_netdev(dev) ; + free_netdev(dev) ; + xl_reset(dev) ; + writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + spin_unlock(&xl_priv->xl_lock) ; + return IRQ_HANDLED; + } + } else { + printk(KERN_WARNING "%s: Received Unknown interrupt : %04x \n", dev->name, intstatus) ; + writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + } + } + + /* Turn interrupts back on */ + + writel( SETINDENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ; + writel( SETINTENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ; + + spin_unlock(&xl_priv->xl_lock) ; + return IRQ_HANDLED; +} + +/* + * Tx - Polling configuration + */ + +static int xl_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + struct xl_tx_desc *txd ; + int tx_head, tx_tail, tx_prev ; + unsigned long flags ; + + spin_lock_irqsave(&xl_priv->xl_lock,flags) ; + + netif_stop_queue(dev) ; + + if (xl_priv->free_ring_entries > 1 ) { + /* + * Set up the descriptor for the packet + */ + tx_head = xl_priv->tx_ring_head ; + tx_tail = xl_priv->tx_ring_tail ; + + txd = &(xl_priv->xl_tx_ring[tx_head]) ; + txd->dnnextptr = 0 ; + txd->framestartheader = skb->len | TXDNINDICATE ; + txd->buffer = pci_map_single(xl_priv->pdev, skb->data, skb->len, PCI_DMA_TODEVICE) ; + txd->buffer_length = skb->len | TXDNFRAGLAST ; + xl_priv->tx_ring_skb[tx_head] = skb ; + xl_priv->xl_stats.tx_packets++ ; + xl_priv->xl_stats.tx_bytes += skb->len ; + + /* + * Set the nextptr of the previous descriptor equal to this descriptor, add XL_TX_RING_SIZE -1 + * to ensure no negative numbers in unsigned locations. + */ + + tx_prev = (xl_priv->tx_ring_head + XL_TX_RING_SIZE - 1) & (XL_TX_RING_SIZE - 1) ; + + xl_priv->tx_ring_head++ ; + xl_priv->tx_ring_head &= (XL_TX_RING_SIZE - 1) ; + xl_priv->free_ring_entries-- ; + + xl_priv->xl_tx_ring[tx_prev].dnnextptr = xl_priv->tx_ring_dma_addr + (sizeof (struct xl_tx_desc) * tx_head) ; + + /* Sneaky, by doing a read on DnListPtr we can force the card to poll on the DnNextPtr */ + /* readl(xl_mmio + MMIO_DNLISTPTR) ; */ + + netif_wake_queue(dev) ; + + spin_unlock_irqrestore(&xl_priv->xl_lock,flags) ; + + return 0; + } else { + spin_unlock_irqrestore(&xl_priv->xl_lock,flags) ; + return 1; + } + +} + +/* + * The NIC has told us that a packet has been downloaded onto the card, we must + * find out which packet it has done, clear the skb and information for the packet + * then advance around the ring for all tranmitted packets + */ + +static void xl_dn_comp(struct net_device *dev) +{ + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + struct xl_tx_desc *txd ; + + + if (xl_priv->tx_ring_tail == 255) {/* First time */ + xl_priv->xl_tx_ring[0].framestartheader = 0 ; + xl_priv->xl_tx_ring[0].dnnextptr = 0 ; + xl_priv->tx_ring_tail = 1 ; + } + + while (xl_priv->xl_tx_ring[xl_priv->tx_ring_tail].framestartheader & TXDNCOMPLETE ) { + txd = &(xl_priv->xl_tx_ring[xl_priv->tx_ring_tail]) ; + pci_unmap_single(xl_priv->pdev,txd->buffer, xl_priv->tx_ring_skb[xl_priv->tx_ring_tail]->len, PCI_DMA_TODEVICE) ; + txd->framestartheader = 0 ; + txd->buffer = 0xdeadbeef ; + txd->buffer_length = 0 ; + dev_kfree_skb_irq(xl_priv->tx_ring_skb[xl_priv->tx_ring_tail]) ; + xl_priv->tx_ring_tail++ ; + xl_priv->tx_ring_tail &= (XL_TX_RING_SIZE - 1) ; + xl_priv->free_ring_entries++ ; + } + + netif_wake_queue(dev) ; + + writel(ACK_INTERRUPT | DNCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ; +} + +/* + * Close the adapter properly. + * This srb reply cannot be handled from interrupt context as we have + * to free the interrupt from the driver. + */ + +static int xl_close(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + unsigned long t ; + + netif_stop_queue(dev) ; + + /* + * Close the adapter, need to stall the rx and tx queues. + */ + + writew(DNSTALL, xl_mmio + MMIO_COMMAND) ; + t=jiffies; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { + schedule(); + if(jiffies-t > 10*HZ) { + printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-DNSTALL not responding.\n", dev->name); + break ; + } + } + writew(DNDISABLE, xl_mmio + MMIO_COMMAND) ; + t=jiffies; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { + schedule(); + if(jiffies-t > 10*HZ) { + printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-DNDISABLE not responding.\n", dev->name); + break ; + } + } + writew(UPSTALL, xl_mmio + MMIO_COMMAND) ; + t=jiffies; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { + schedule(); + if(jiffies-t > 10*HZ) { + printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-UPSTALL not responding.\n", dev->name); + break ; + } + } + + /* Turn off interrupts, we will still get the indication though + * so we can trap it + */ + + writel(SETINTENABLE, xl_mmio + MMIO_COMMAND) ; + + xl_srb_cmd(dev,CLOSE_NIC) ; + + t=jiffies; + while (!(readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_SRB)) { + schedule(); + if(jiffies-t > 10*HZ) { + printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-CLOSENIC not responding.\n", dev->name); + break ; + } + } + /* Read the srb response from the adapter */ + + writel(MEM_BYTE_READ | 0xd0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD); + if (readb(xl_mmio + MMIO_MACDATA) != CLOSE_NIC) { + printk(KERN_INFO "%s: CLOSE_NIC did not get a CLOSE_NIC response \n",dev->name) ; + } else { + writel((MEM_BYTE_READ | 0xd0000 | xl_priv->srb) +2, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + if (readb(xl_mmio + MMIO_MACDATA)==0) { + printk(KERN_INFO "%s: Adapter has been closed \n",dev->name) ; + writew(ACK_INTERRUPT | SRBRACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + + xl_freemem(dev) ; + free_irq(dev->irq,dev) ; + } else { + printk(KERN_INFO "%s: Close nic command returned error code %02x\n",dev->name, readb(xl_mmio + MMIO_MACDATA)) ; + } + } + + /* Reset the upload and download logic */ + + writew(UPRESET, xl_mmio + MMIO_COMMAND) ; + t=jiffies; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { + schedule(); + if(jiffies-t > 10*HZ) { + printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-UPRESET not responding.\n", dev->name); + break ; + } + } + writew(DNRESET, xl_mmio + MMIO_COMMAND) ; + t=jiffies; + while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { + schedule(); + if(jiffies-t > 10*HZ) { + printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-DNRESET not responding.\n", dev->name); + break ; + } + } + xl_hw_reset(dev) ; + return 0 ; +} + +static void xl_set_rx_mode(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + struct dev_mc_list *dmi ; + unsigned char dev_mc_address[4] ; + u16 options ; + int i ; + + if (dev->flags & IFF_PROMISC) + options = 0x0004 ; + else + options = 0x0000 ; + + if (options ^ xl_priv->xl_copy_all_options) { /* Changed, must send command */ + xl_priv->xl_copy_all_options = options ; + xl_srb_cmd(dev, SET_RECEIVE_MODE) ; + return ; + } + + dev_mc_address[0] = dev_mc_address[1] = dev_mc_address[2] = dev_mc_address[3] = 0 ; + + for (i=0,dmi=dev->mc_list;i < dev->mc_count; i++,dmi = dmi->next) { + dev_mc_address[0] |= dmi->dmi_addr[2] ; + dev_mc_address[1] |= dmi->dmi_addr[3] ; + dev_mc_address[2] |= dmi->dmi_addr[4] ; + dev_mc_address[3] |= dmi->dmi_addr[5] ; + } + + if (memcmp(xl_priv->xl_functional_addr,dev_mc_address,4) != 0) { /* Options have changed, run the command */ + memcpy(xl_priv->xl_functional_addr, dev_mc_address,4) ; + xl_srb_cmd(dev, SET_FUNC_ADDRESS) ; + } + return ; +} + + +/* + * We issued an srb command and now we must read + * the response from the completed command. + */ + +static void xl_srb_bh(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + u8 srb_cmd, ret_code ; + int i ; + + writel(MEM_BYTE_READ | 0xd0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + srb_cmd = readb(xl_mmio + MMIO_MACDATA) ; + writel((MEM_BYTE_READ | 0xd0000 | xl_priv->srb) +2, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + ret_code = readb(xl_mmio + MMIO_MACDATA) ; + + /* Ret_code is standard across all commands */ + + switch (ret_code) { + case 1: + printk(KERN_INFO "%s: Command: %d - Invalid Command code\n",dev->name,srb_cmd) ; + break ; + case 4: + printk(KERN_INFO "%s: Command: %d - Adapter is closed, must be open for this command \n",dev->name,srb_cmd) ; + break ; + + case 6: + printk(KERN_INFO "%s: Command: %d - Options Invalid for command \n",dev->name,srb_cmd) ; + break ; + + case 0: /* Successful command execution */ + switch (srb_cmd) { + case READ_LOG: /* Returns 14 bytes of data from the NIC */ + if(xl_priv->xl_message_level) + printk(KERN_INFO "%s: READ.LOG 14 bytes of data ",dev->name) ; + /* + * We still have to read the log even if message_level = 0 and we don't want + * to see it + */ + for (i=0;i<14;i++) { + writel(MEM_BYTE_READ | 0xd0000 | xl_priv->srb | i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + if(xl_priv->xl_message_level) + printk("%02x:",readb(xl_mmio + MMIO_MACDATA)) ; + } + printk("\n") ; + break ; + case SET_FUNC_ADDRESS: + if(xl_priv->xl_message_level) + printk(KERN_INFO "%s: Functional Address Set \n",dev->name) ; + break ; + case CLOSE_NIC: + if(xl_priv->xl_message_level) + printk(KERN_INFO "%s: Received CLOSE_NIC interrupt in interrupt handler \n",dev->name) ; + break ; + case SET_MULTICAST_MODE: + if(xl_priv->xl_message_level) + printk(KERN_INFO "%s: Multicast options successfully changed\n",dev->name) ; + break ; + case SET_RECEIVE_MODE: + if(xl_priv->xl_message_level) { + if (xl_priv->xl_copy_all_options == 0x0004) + printk(KERN_INFO "%s: Entering promiscuous mode \n", dev->name) ; + else + printk(KERN_INFO "%s: Entering normal receive mode \n",dev->name) ; + } + break ; + + } /* switch */ + break ; + } /* switch */ + return ; +} + +static struct net_device_stats * xl_get_stats(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + return (struct net_device_stats *) &xl_priv->xl_stats; +} + +static int xl_set_mac_address (struct net_device *dev, void *addr) +{ + struct sockaddr *saddr = addr ; + struct xl_private *xl_priv = (struct xl_private *)dev->priv ; + + if (netif_running(dev)) { + printk(KERN_WARNING "%s: Cannot set mac/laa address while card is open\n", dev->name) ; + return -EIO ; + } + + memcpy(xl_priv->xl_laa, saddr->sa_data,dev->addr_len) ; + + if (xl_priv->xl_message_level) { + printk(KERN_INFO "%s: MAC/LAA Set to = %x.%x.%x.%x.%x.%x\n",dev->name, xl_priv->xl_laa[0], + xl_priv->xl_laa[1], xl_priv->xl_laa[2], + xl_priv->xl_laa[3], xl_priv->xl_laa[4], + xl_priv->xl_laa[5]); + } + + return 0 ; +} + +static void xl_arb_cmd(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + u8 arb_cmd ; + u16 lan_status, lan_status_diff ; + + writel( ( MEM_BYTE_READ | 0xD0000 | xl_priv->arb), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + arb_cmd = readb(xl_mmio + MMIO_MACDATA) ; + + if (arb_cmd == RING_STATUS_CHANGE) { /* Ring.Status.Change */ + writel( ( (MEM_WORD_READ | 0xD0000 | xl_priv->arb) + 6), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + + printk(KERN_INFO "%s: Ring Status Change: New Status = %04x\n", dev->name, ntohs(readw(xl_mmio + MMIO_MACDATA) )) ; + + lan_status = ntohs(readw(xl_mmio + MMIO_MACDATA)); + + /* Acknowledge interrupt, this tells nic we are done with the arb */ + writel(ACK_INTERRUPT | ARBCACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + + lan_status_diff = xl_priv->xl_lan_status ^ lan_status ; + + if (lan_status_diff & (LSC_LWF | LSC_ARW | LSC_FPE | LSC_RR) ) { + if (lan_status_diff & LSC_LWF) + printk(KERN_WARNING "%s: Short circuit detected on the lobe\n",dev->name); + if (lan_status_diff & LSC_ARW) + printk(KERN_WARNING "%s: Auto removal error\n",dev->name); + if (lan_status_diff & LSC_FPE) + printk(KERN_WARNING "%s: FDX Protocol Error\n",dev->name); + if (lan_status_diff & LSC_RR) + printk(KERN_WARNING "%s: Force remove MAC frame received\n",dev->name); + + /* Adapter has been closed by the hardware */ + + netif_stop_queue(dev); + xl_freemem(dev) ; + free_irq(dev->irq,dev); + + printk(KERN_WARNING "%s: Adapter has been closed \n", dev->name) ; + } /* If serious error */ + + if (xl_priv->xl_message_level) { + if (lan_status_diff & LSC_SIG_LOSS) + printk(KERN_WARNING "%s: No receive signal detected \n", dev->name) ; + if (lan_status_diff & LSC_HARD_ERR) + printk(KERN_INFO "%s: Beaconing \n",dev->name); + if (lan_status_diff & LSC_SOFT_ERR) + printk(KERN_WARNING "%s: Adapter transmitted Soft Error Report Mac Frame \n",dev->name); + if (lan_status_diff & LSC_TRAN_BCN) + printk(KERN_INFO "%s: We are tranmitting the beacon, aaah\n",dev->name); + if (lan_status_diff & LSC_SS) + printk(KERN_INFO "%s: Single Station on the ring \n", dev->name); + if (lan_status_diff & LSC_RING_REC) + printk(KERN_INFO "%s: Ring recovery ongoing\n",dev->name); + if (lan_status_diff & LSC_FDX_MODE) + printk(KERN_INFO "%s: Operating in FDX mode\n",dev->name); + } + + if (lan_status_diff & LSC_CO) { + if (xl_priv->xl_message_level) + printk(KERN_INFO "%s: Counter Overflow \n", dev->name); + /* Issue READ.LOG command */ + xl_srb_cmd(dev, READ_LOG) ; + } + + /* There is no command in the tech docs to issue the read_sr_counters */ + if (lan_status_diff & LSC_SR_CO) { + if (xl_priv->xl_message_level) + printk(KERN_INFO "%s: Source routing counters overflow\n", dev->name); + } + + xl_priv->xl_lan_status = lan_status ; + + } /* Lan.change.status */ + else if ( arb_cmd == RECEIVE_DATA) { /* Received.Data */ +#if XL_DEBUG + printk(KERN_INFO "Received.Data \n") ; +#endif + writel( ((MEM_WORD_READ | 0xD0000 | xl_priv->arb) + 6), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + xl_priv->mac_buffer = ntohs(readw(xl_mmio + MMIO_MACDATA)) ; + + /* Now we are going to be really basic here and not do anything + * with the data at all. The tech docs do not give me enough + * information to calculate the buffers properly so we're + * just going to tell the nic that we've dealt with the frame + * anyway. + */ + + dev->last_rx = jiffies ; + /* Acknowledge interrupt, this tells nic we are done with the arb */ + writel(ACK_INTERRUPT | ARBCACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ; + + /* Is the ASB free ? */ + + xl_priv->asb_queued = 0 ; + writel( ((MEM_BYTE_READ | 0xD0000 | xl_priv->asb) + 2), xl_mmio + MMIO_MAC_ACCESS_CMD) ; + if (readb(xl_mmio + MMIO_MACDATA) != 0xff) { + xl_priv->asb_queued = 1 ; + + xl_wait_misr_flags(dev) ; + + writel(MEM_BYTE_WRITE | MF_ASBFR, xl_mmio + MMIO_MAC_ACCESS_CMD); + writeb(0xff, xl_mmio + MMIO_MACDATA) ; + writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(MISR_ASBFR, xl_mmio + MMIO_MACDATA) ; + return ; + /* Drop out and wait for the bottom half to be run */ + } + + xl_asb_cmd(dev) ; + + } else { + printk(KERN_WARNING "%s: Received unknown arb (xl_priv) command: %02x \n",dev->name,arb_cmd) ; + } + + /* Acknowledge the arb interrupt */ + + writel(ACK_INTERRUPT | ARBCACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ; + + return ; +} + + +/* + * There is only one asb command, but we can get called from different + * places. + */ + +static void xl_asb_cmd(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + + if (xl_priv->asb_queued == 1) + writel(ACK_INTERRUPT | LATCH_ACK | ASBFACK, xl_mmio + MMIO_COMMAND) ; + + writel(MEM_BYTE_WRITE | 0xd0000 | xl_priv->asb, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0x81, xl_mmio + MMIO_MACDATA) ; + + writel(MEM_WORD_WRITE | 0xd0000 | xl_priv->asb | 6, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(ntohs(xl_priv->mac_buffer), xl_mmio + MMIO_MACDATA) ; + + xl_wait_misr_flags(dev) ; + + writel(MEM_BYTE_WRITE | MF_RASB, xl_mmio + MMIO_MAC_ACCESS_CMD); + writeb(0xff, xl_mmio + MMIO_MACDATA) ; + + writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(MISR_RASB, xl_mmio + MMIO_MACDATA) ; + + xl_priv->asb_queued = 2 ; + + return ; +} + +/* + * This will only get called if there was an error + * from the asb cmd. + */ +static void xl_asb_bh(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + u8 ret_code ; + + writel(MMIO_BYTE_READ | 0xd0000 | xl_priv->asb | 2, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + ret_code = readb(xl_mmio + MMIO_MACDATA) ; + switch (ret_code) { + case 0x01: + printk(KERN_INFO "%s: ASB Command, unrecognized command code \n",dev->name) ; + break ; + case 0x26: + printk(KERN_INFO "%s: ASB Command, unexpected receive buffer \n", dev->name) ; + break ; + case 0x40: + printk(KERN_INFO "%s: ASB Command, Invalid Station ID \n", dev->name) ; + break ; + } + xl_priv->asb_queued = 0 ; + writel(ACK_INTERRUPT | LATCH_ACK | ASBFACK, xl_mmio + MMIO_COMMAND) ; + return ; +} + +/* + * Issue srb commands to the nic + */ + +static void xl_srb_cmd(struct net_device *dev, int srb_cmd) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + + switch (srb_cmd) { + case READ_LOG: + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(READ_LOG, xl_mmio + MMIO_MACDATA) ; + break; + + case CLOSE_NIC: + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(CLOSE_NIC, xl_mmio + MMIO_MACDATA) ; + break ; + + case SET_RECEIVE_MODE: + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(SET_RECEIVE_MODE, xl_mmio + MMIO_MACDATA) ; + writel(MEM_WORD_WRITE | 0xD0000 | xl_priv->srb | 4, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writew(xl_priv->xl_copy_all_options, xl_mmio + MMIO_MACDATA) ; + break ; + + case SET_FUNC_ADDRESS: + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(SET_FUNC_ADDRESS, xl_mmio + MMIO_MACDATA) ; + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 6 , xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(xl_priv->xl_functional_addr[0], xl_mmio + MMIO_MACDATA) ; + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 7 , xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(xl_priv->xl_functional_addr[1], xl_mmio + MMIO_MACDATA) ; + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 8 , xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(xl_priv->xl_functional_addr[2], xl_mmio + MMIO_MACDATA) ; + writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 9 , xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(xl_priv->xl_functional_addr[3], xl_mmio + MMIO_MACDATA) ; + break ; + } /* switch */ + + + xl_wait_misr_flags(dev) ; + + /* Write 0xff to the CSRB flag */ + writel(MEM_BYTE_WRITE | MF_CSRB , xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0xFF, xl_mmio + MMIO_MACDATA) ; + /* Set csrb bit in MISR register to process command */ + writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(MISR_CSRB, xl_mmio + MMIO_MACDATA) ; + xl_priv->srb_queued = 1 ; + + return ; +} + +/* + * This is nasty, to use the MISR command you have to wait for 6 memory locations + * to be zero. This is the way the driver does on other OS'es so we should be ok with + * the empty loop. + */ + +static void xl_wait_misr_flags(struct net_device *dev) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv ; + u8 __iomem * xl_mmio = xl_priv->xl_mmio ; + + int i ; + + writel(MMIO_BYTE_READ | MISR_RW, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + if (readb(xl_mmio + MMIO_MACDATA) != 0) { /* Misr not clear */ + for (i=0; i<6; i++) { + writel(MEM_BYTE_READ | 0xDFFE0 | i, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + while (readb(xl_mmio + MMIO_MACDATA) != 0 ) {} ; /* Empty Loop */ + } + } + + writel(MMIO_BYTE_WRITE | MISR_AND, xl_mmio + MMIO_MAC_ACCESS_CMD) ; + writeb(0x80, xl_mmio + MMIO_MACDATA) ; + + return ; +} + +/* + * Change mtu size, this should work the same as olympic + */ + +static int xl_change_mtu(struct net_device *dev, int mtu) +{ + struct xl_private *xl_priv = (struct xl_private *) dev->priv; + u16 max_mtu ; + + if (xl_priv->xl_ring_speed == 4) + max_mtu = 4500 ; + else + max_mtu = 18000 ; + + if (mtu > max_mtu) + return -EINVAL ; + if (mtu < 100) + return -EINVAL ; + + dev->mtu = mtu ; + xl_priv->pkt_buf_sz = mtu + TR_HLEN ; + + return 0 ; +} + +static void __devexit xl_remove_one (struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct xl_private *xl_priv=(struct xl_private *)dev->priv; + + unregister_netdev(dev); + iounmap(xl_priv->xl_mmio) ; + pci_release_regions(pdev) ; + pci_set_drvdata(pdev,NULL) ; + free_netdev(dev); + return ; +} + +static struct pci_driver xl_3c359_driver = { + .name = "3c359", + .id_table = xl_pci_tbl, + .probe = xl_probe, + .remove = __devexit_p(xl_remove_one), +}; + +static int __init xl_pci_init (void) +{ + return pci_module_init (&xl_3c359_driver); +} + + +static void __exit xl_pci_cleanup (void) +{ + pci_unregister_driver (&xl_3c359_driver); +} + +module_init(xl_pci_init); +module_exit(xl_pci_cleanup); + +MODULE_LICENSE("GPL") ; |