mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Joe Perches](/assets/img/avatar_default.png)
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
1716 lines
42 KiB
C
1716 lines
42 KiB
C
/*
|
|
* rrunner.c: Linux driver for the Essential RoadRunner HIPPI board.
|
|
*
|
|
* Copyright (C) 1998-2002 by Jes Sorensen, <jes@wildopensource.com>.
|
|
*
|
|
* Thanks to Essential Communication for providing us with hardware
|
|
* and very comprehensive documentation without which I would not have
|
|
* been able to write this driver. A special thank you to John Gibbon
|
|
* for sorting out the legal issues, with the NDA, allowing the code to
|
|
* be released under the GPL.
|
|
*
|
|
* 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.
|
|
*
|
|
* Thanks to Jayaram Bhat from ODS/Essential for fixing some of the
|
|
* stupid bugs in my code.
|
|
*
|
|
* Softnet support and various other patches from Val Henson of
|
|
* ODS/Essential.
|
|
*
|
|
* PCI DMA mapping code partly based on work by Francois Romieu.
|
|
*/
|
|
|
|
|
|
#define DEBUG 1
|
|
#define RX_DMA_SKBUFF 1
|
|
#define PKT_COPY_THRESHOLD 512
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/hippidevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/mm.h>
|
|
#include <net/sock.h>
|
|
|
|
#include <asm/system.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#define rr_if_busy(dev) netif_queue_stopped(dev)
|
|
#define rr_if_running(dev) netif_running(dev)
|
|
|
|
#include "rrunner.h"
|
|
|
|
#define RUN_AT(x) (jiffies + (x))
|
|
|
|
|
|
MODULE_AUTHOR("Jes Sorensen <jes@wildopensource.com>");
|
|
MODULE_DESCRIPTION("Essential RoadRunner HIPPI driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static char version[] __devinitdata = "rrunner.c: v0.50 11/11/2002 Jes Sorensen (jes@wildopensource.com)\n";
|
|
|
|
/*
|
|
* Implementation notes:
|
|
*
|
|
* The DMA engine only allows for DMA within physical 64KB chunks of
|
|
* memory. The current approach of the driver (and stack) is to use
|
|
* linear blocks of memory for the skbuffs. However, as the data block
|
|
* is always the first part of the skb and skbs are 2^n aligned so we
|
|
* are guarantted to get the whole block within one 64KB align 64KB
|
|
* chunk.
|
|
*
|
|
* On the long term, relying on being able to allocate 64KB linear
|
|
* chunks of memory is not feasible and the skb handling code and the
|
|
* stack will need to know about I/O vectors or something similar.
|
|
*/
|
|
|
|
static int __devinit rr_init_one(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *dev;
|
|
static int version_disp;
|
|
u8 pci_latency;
|
|
struct rr_private *rrpriv;
|
|
void *tmpptr;
|
|
dma_addr_t ring_dma;
|
|
int ret = -ENOMEM;
|
|
|
|
dev = alloc_hippi_dev(sizeof(struct rr_private));
|
|
if (!dev)
|
|
goto out3;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret) {
|
|
ret = -ENODEV;
|
|
goto out2;
|
|
}
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
|
|
if (pci_request_regions(pdev, "rrunner")) {
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, dev);
|
|
|
|
rrpriv->pci_dev = pdev;
|
|
|
|
spin_lock_init(&rrpriv->lock);
|
|
|
|
dev->irq = pdev->irq;
|
|
dev->open = &rr_open;
|
|
dev->hard_start_xmit = &rr_start_xmit;
|
|
dev->stop = &rr_close;
|
|
dev->do_ioctl = &rr_ioctl;
|
|
|
|
dev->base_addr = pci_resource_start(pdev, 0);
|
|
|
|
/* display version info if adapter is found */
|
|
if (!version_disp) {
|
|
/* set display flag to TRUE so that */
|
|
/* we only display this string ONCE */
|
|
version_disp = 1;
|
|
printk(version);
|
|
}
|
|
|
|
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
|
|
if (pci_latency <= 0x58){
|
|
pci_latency = 0x58;
|
|
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, pci_latency);
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
printk(KERN_INFO "%s: Essential RoadRunner serial HIPPI "
|
|
"at 0x%08lx, irq %i, PCI latency %i\n", dev->name,
|
|
dev->base_addr, dev->irq, pci_latency);
|
|
|
|
/*
|
|
* Remap the regs into kernel space.
|
|
*/
|
|
|
|
rrpriv->regs = ioremap(dev->base_addr, 0x1000);
|
|
|
|
if (!rrpriv->regs){
|
|
printk(KERN_ERR "%s: Unable to map I/O register, "
|
|
"RoadRunner will be disabled.\n", dev->name);
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
tmpptr = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
|
|
rrpriv->tx_ring = tmpptr;
|
|
rrpriv->tx_ring_dma = ring_dma;
|
|
|
|
if (!tmpptr) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
tmpptr = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
|
|
rrpriv->rx_ring = tmpptr;
|
|
rrpriv->rx_ring_dma = ring_dma;
|
|
|
|
if (!tmpptr) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
tmpptr = pci_alloc_consistent(pdev, EVT_RING_SIZE, &ring_dma);
|
|
rrpriv->evt_ring = tmpptr;
|
|
rrpriv->evt_ring_dma = ring_dma;
|
|
|
|
if (!tmpptr) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Don't access any register before this point!
|
|
*/
|
|
#ifdef __BIG_ENDIAN
|
|
writel(readl(&rrpriv->regs->HostCtrl) | NO_SWAP,
|
|
&rrpriv->regs->HostCtrl);
|
|
#endif
|
|
/*
|
|
* Need to add a case for little-endian 64-bit hosts here.
|
|
*/
|
|
|
|
rr_init(dev);
|
|
|
|
dev->base_addr = 0;
|
|
|
|
ret = register_netdev(dev);
|
|
if (ret)
|
|
goto out;
|
|
return 0;
|
|
|
|
out:
|
|
if (rrpriv->rx_ring)
|
|
pci_free_consistent(pdev, RX_TOTAL_SIZE, rrpriv->rx_ring,
|
|
rrpriv->rx_ring_dma);
|
|
if (rrpriv->tx_ring)
|
|
pci_free_consistent(pdev, TX_TOTAL_SIZE, rrpriv->tx_ring,
|
|
rrpriv->tx_ring_dma);
|
|
if (rrpriv->regs)
|
|
iounmap(rrpriv->regs);
|
|
if (pdev) {
|
|
pci_release_regions(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
out2:
|
|
free_netdev(dev);
|
|
out3:
|
|
return ret;
|
|
}
|
|
|
|
static void __devexit rr_remove_one (struct pci_dev *pdev)
|
|
{
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
|
|
|
if (dev) {
|
|
struct rr_private *rr = netdev_priv(dev);
|
|
|
|
if (!(readl(&rr->regs->HostCtrl) & NIC_HALTED)){
|
|
printk(KERN_ERR "%s: trying to unload running NIC\n",
|
|
dev->name);
|
|
writel(HALT_NIC, &rr->regs->HostCtrl);
|
|
}
|
|
|
|
pci_free_consistent(pdev, EVT_RING_SIZE, rr->evt_ring,
|
|
rr->evt_ring_dma);
|
|
pci_free_consistent(pdev, RX_TOTAL_SIZE, rr->rx_ring,
|
|
rr->rx_ring_dma);
|
|
pci_free_consistent(pdev, TX_TOTAL_SIZE, rr->tx_ring,
|
|
rr->tx_ring_dma);
|
|
unregister_netdev(dev);
|
|
iounmap(rr->regs);
|
|
free_netdev(dev);
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Commands are considered to be slow, thus there is no reason to
|
|
* inline this.
|
|
*/
|
|
static void rr_issue_cmd(struct rr_private *rrpriv, struct cmd *cmd)
|
|
{
|
|
struct rr_regs __iomem *regs;
|
|
u32 idx;
|
|
|
|
regs = rrpriv->regs;
|
|
/*
|
|
* This is temporary - it will go away in the final version.
|
|
* We probably also want to make this function inline.
|
|
*/
|
|
if (readl(®s->HostCtrl) & NIC_HALTED){
|
|
printk("issuing command for halted NIC, code 0x%x, "
|
|
"HostCtrl %08x\n", cmd->code, readl(®s->HostCtrl));
|
|
if (readl(®s->Mode) & FATAL_ERR)
|
|
printk("error codes Fail1 %02x, Fail2 %02x\n",
|
|
readl(®s->Fail1), readl(®s->Fail2));
|
|
}
|
|
|
|
idx = rrpriv->info->cmd_ctrl.pi;
|
|
|
|
writel(*(u32*)(cmd), ®s->CmdRing[idx]);
|
|
wmb();
|
|
|
|
idx = (idx - 1) % CMD_RING_ENTRIES;
|
|
rrpriv->info->cmd_ctrl.pi = idx;
|
|
wmb();
|
|
|
|
if (readl(®s->Mode) & FATAL_ERR)
|
|
printk("error code %02x\n", readl(®s->Fail1));
|
|
}
|
|
|
|
|
|
/*
|
|
* Reset the board in a sensible manner. The NIC is already halted
|
|
* when we get here and a spin-lock is held.
|
|
*/
|
|
static int rr_reset(struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
u32 start_pc;
|
|
int i;
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
rr_load_firmware(dev);
|
|
|
|
writel(0x01000000, ®s->TX_state);
|
|
writel(0xff800000, ®s->RX_state);
|
|
writel(0, ®s->AssistState);
|
|
writel(CLEAR_INTA, ®s->LocalCtrl);
|
|
writel(0x01, ®s->BrkPt);
|
|
writel(0, ®s->Timer);
|
|
writel(0, ®s->TimerRef);
|
|
writel(RESET_DMA, ®s->DmaReadState);
|
|
writel(RESET_DMA, ®s->DmaWriteState);
|
|
writel(0, ®s->DmaWriteHostHi);
|
|
writel(0, ®s->DmaWriteHostLo);
|
|
writel(0, ®s->DmaReadHostHi);
|
|
writel(0, ®s->DmaReadHostLo);
|
|
writel(0, ®s->DmaReadLen);
|
|
writel(0, ®s->DmaWriteLen);
|
|
writel(0, ®s->DmaWriteLcl);
|
|
writel(0, ®s->DmaWriteIPchecksum);
|
|
writel(0, ®s->DmaReadLcl);
|
|
writel(0, ®s->DmaReadIPchecksum);
|
|
writel(0, ®s->PciState);
|
|
#if (BITS_PER_LONG == 64) && defined __LITTLE_ENDIAN
|
|
writel(SWAP_DATA | PTR64BIT | PTR_WD_SWAP, ®s->Mode);
|
|
#elif (BITS_PER_LONG == 64)
|
|
writel(SWAP_DATA | PTR64BIT | PTR_WD_NOSWAP, ®s->Mode);
|
|
#else
|
|
writel(SWAP_DATA | PTR32BIT | PTR_WD_NOSWAP, ®s->Mode);
|
|
#endif
|
|
|
|
#if 0
|
|
/*
|
|
* Don't worry, this is just black magic.
|
|
*/
|
|
writel(0xdf000, ®s->RxBase);
|
|
writel(0xdf000, ®s->RxPrd);
|
|
writel(0xdf000, ®s->RxCon);
|
|
writel(0xce000, ®s->TxBase);
|
|
writel(0xce000, ®s->TxPrd);
|
|
writel(0xce000, ®s->TxCon);
|
|
writel(0, ®s->RxIndPro);
|
|
writel(0, ®s->RxIndCon);
|
|
writel(0, ®s->RxIndRef);
|
|
writel(0, ®s->TxIndPro);
|
|
writel(0, ®s->TxIndCon);
|
|
writel(0, ®s->TxIndRef);
|
|
writel(0xcc000, ®s->pad10[0]);
|
|
writel(0, ®s->DrCmndPro);
|
|
writel(0, ®s->DrCmndCon);
|
|
writel(0, ®s->DwCmndPro);
|
|
writel(0, ®s->DwCmndCon);
|
|
writel(0, ®s->DwCmndRef);
|
|
writel(0, ®s->DrDataPro);
|
|
writel(0, ®s->DrDataCon);
|
|
writel(0, ®s->DrDataRef);
|
|
writel(0, ®s->DwDataPro);
|
|
writel(0, ®s->DwDataCon);
|
|
writel(0, ®s->DwDataRef);
|
|
#endif
|
|
|
|
writel(0xffffffff, ®s->MbEvent);
|
|
writel(0, ®s->Event);
|
|
|
|
writel(0, ®s->TxPi);
|
|
writel(0, ®s->IpRxPi);
|
|
|
|
writel(0, ®s->EvtCon);
|
|
writel(0, ®s->EvtPrd);
|
|
|
|
rrpriv->info->evt_ctrl.pi = 0;
|
|
|
|
for (i = 0; i < CMD_RING_ENTRIES; i++)
|
|
writel(0, ®s->CmdRing[i]);
|
|
|
|
/*
|
|
* Why 32 ? is this not cache line size dependent?
|
|
*/
|
|
writel(RBURST_64|WBURST_64, ®s->PciState);
|
|
wmb();
|
|
|
|
start_pc = rr_read_eeprom_word(rrpriv,
|
|
offsetof(struct eeprom, rncd_info.FwStart));
|
|
|
|
#if (DEBUG > 1)
|
|
printk("%s: Executing firmware at address 0x%06x\n",
|
|
dev->name, start_pc);
|
|
#endif
|
|
|
|
writel(start_pc + 0x800, ®s->Pc);
|
|
wmb();
|
|
udelay(5);
|
|
|
|
writel(start_pc, ®s->Pc);
|
|
wmb();
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Read a string from the EEPROM.
|
|
*/
|
|
static unsigned int rr_read_eeprom(struct rr_private *rrpriv,
|
|
unsigned long offset,
|
|
unsigned char *buf,
|
|
unsigned long length)
|
|
{
|
|
struct rr_regs __iomem *regs = rrpriv->regs;
|
|
u32 misc, io, host, i;
|
|
|
|
io = readl(®s->ExtIo);
|
|
writel(0, ®s->ExtIo);
|
|
misc = readl(®s->LocalCtrl);
|
|
writel(0, ®s->LocalCtrl);
|
|
host = readl(®s->HostCtrl);
|
|
writel(host | HALT_NIC, ®s->HostCtrl);
|
|
mb();
|
|
|
|
for (i = 0; i < length; i++){
|
|
writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase);
|
|
mb();
|
|
buf[i] = (readl(®s->WinData) >> 24) & 0xff;
|
|
mb();
|
|
}
|
|
|
|
writel(host, ®s->HostCtrl);
|
|
writel(misc, ®s->LocalCtrl);
|
|
writel(io, ®s->ExtIo);
|
|
mb();
|
|
return i;
|
|
}
|
|
|
|
|
|
/*
|
|
* Shortcut to read one word (4 bytes) out of the EEPROM and convert
|
|
* it to our CPU byte-order.
|
|
*/
|
|
static u32 rr_read_eeprom_word(struct rr_private *rrpriv,
|
|
size_t offset)
|
|
{
|
|
__be32 word;
|
|
|
|
if ((rr_read_eeprom(rrpriv, offset,
|
|
(unsigned char *)&word, 4) == 4))
|
|
return be32_to_cpu(word);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Write a string to the EEPROM.
|
|
*
|
|
* This is only called when the firmware is not running.
|
|
*/
|
|
static unsigned int write_eeprom(struct rr_private *rrpriv,
|
|
unsigned long offset,
|
|
unsigned char *buf,
|
|
unsigned long length)
|
|
{
|
|
struct rr_regs __iomem *regs = rrpriv->regs;
|
|
u32 misc, io, data, i, j, ready, error = 0;
|
|
|
|
io = readl(®s->ExtIo);
|
|
writel(0, ®s->ExtIo);
|
|
misc = readl(®s->LocalCtrl);
|
|
writel(ENABLE_EEPROM_WRITE, ®s->LocalCtrl);
|
|
mb();
|
|
|
|
for (i = 0; i < length; i++){
|
|
writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase);
|
|
mb();
|
|
data = buf[i] << 24;
|
|
/*
|
|
* Only try to write the data if it is not the same
|
|
* value already.
|
|
*/
|
|
if ((readl(®s->WinData) & 0xff000000) != data){
|
|
writel(data, ®s->WinData);
|
|
ready = 0;
|
|
j = 0;
|
|
mb();
|
|
while(!ready){
|
|
udelay(20);
|
|
if ((readl(®s->WinData) & 0xff000000) ==
|
|
data)
|
|
ready = 1;
|
|
mb();
|
|
if (j++ > 5000){
|
|
printk("data mismatch: %08x, "
|
|
"WinData %08x\n", data,
|
|
readl(®s->WinData));
|
|
ready = 1;
|
|
error = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
writel(misc, ®s->LocalCtrl);
|
|
writel(io, ®s->ExtIo);
|
|
mb();
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
static int __devinit rr_init(struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
u32 sram_size, rev;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
rev = readl(®s->FwRev);
|
|
rrpriv->fw_rev = rev;
|
|
if (rev > 0x00020024)
|
|
printk(" Firmware revision: %i.%i.%i\n", (rev >> 16),
|
|
((rev >> 8) & 0xff), (rev & 0xff));
|
|
else if (rev >= 0x00020000) {
|
|
printk(" Firmware revision: %i.%i.%i (2.0.37 or "
|
|
"later is recommended)\n", (rev >> 16),
|
|
((rev >> 8) & 0xff), (rev & 0xff));
|
|
}else{
|
|
printk(" Firmware revision too old: %i.%i.%i, please "
|
|
"upgrade to 2.0.37 or later.\n",
|
|
(rev >> 16), ((rev >> 8) & 0xff), (rev & 0xff));
|
|
}
|
|
|
|
#if (DEBUG > 2)
|
|
printk(" Maximum receive rings %i\n", readl(®s->MaxRxRng));
|
|
#endif
|
|
|
|
/*
|
|
* Read the hardware address from the eeprom. The HW address
|
|
* is not really necessary for HIPPI but awfully convenient.
|
|
* The pointer arithmetic to put it in dev_addr is ugly, but
|
|
* Donald Becker does it this way for the GigE version of this
|
|
* card and it's shorter and more portable than any
|
|
* other method I've seen. -VAL
|
|
*/
|
|
|
|
*(__be16 *)(dev->dev_addr) =
|
|
htons(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA)));
|
|
*(__be32 *)(dev->dev_addr+2) =
|
|
htonl(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA[4])));
|
|
|
|
printk(" MAC: %s\n", print_mac(mac, dev->dev_addr));
|
|
|
|
sram_size = rr_read_eeprom_word(rrpriv, 8);
|
|
printk(" SRAM size 0x%06x\n", sram_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int rr_init1(struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
unsigned long myjif, flags;
|
|
struct cmd cmd;
|
|
u32 hostctrl;
|
|
int ecode = 0;
|
|
short i;
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
|
|
hostctrl = readl(®s->HostCtrl);
|
|
writel(hostctrl | HALT_NIC | RR_CLEAR_INT, ®s->HostCtrl);
|
|
wmb();
|
|
|
|
if (hostctrl & PARITY_ERR){
|
|
printk("%s: Parity error halting NIC - this is serious!\n",
|
|
dev->name);
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
ecode = -EFAULT;
|
|
goto error;
|
|
}
|
|
|
|
set_rxaddr(regs, rrpriv->rx_ctrl_dma);
|
|
set_infoaddr(regs, rrpriv->info_dma);
|
|
|
|
rrpriv->info->evt_ctrl.entry_size = sizeof(struct event);
|
|
rrpriv->info->evt_ctrl.entries = EVT_RING_ENTRIES;
|
|
rrpriv->info->evt_ctrl.mode = 0;
|
|
rrpriv->info->evt_ctrl.pi = 0;
|
|
set_rraddr(&rrpriv->info->evt_ctrl.rngptr, rrpriv->evt_ring_dma);
|
|
|
|
rrpriv->info->cmd_ctrl.entry_size = sizeof(struct cmd);
|
|
rrpriv->info->cmd_ctrl.entries = CMD_RING_ENTRIES;
|
|
rrpriv->info->cmd_ctrl.mode = 0;
|
|
rrpriv->info->cmd_ctrl.pi = 15;
|
|
|
|
for (i = 0; i < CMD_RING_ENTRIES; i++) {
|
|
writel(0, ®s->CmdRing[i]);
|
|
}
|
|
|
|
for (i = 0; i < TX_RING_ENTRIES; i++) {
|
|
rrpriv->tx_ring[i].size = 0;
|
|
set_rraddr(&rrpriv->tx_ring[i].addr, 0);
|
|
rrpriv->tx_skbuff[i] = NULL;
|
|
}
|
|
rrpriv->info->tx_ctrl.entry_size = sizeof(struct tx_desc);
|
|
rrpriv->info->tx_ctrl.entries = TX_RING_ENTRIES;
|
|
rrpriv->info->tx_ctrl.mode = 0;
|
|
rrpriv->info->tx_ctrl.pi = 0;
|
|
set_rraddr(&rrpriv->info->tx_ctrl.rngptr, rrpriv->tx_ring_dma);
|
|
|
|
/*
|
|
* Set dirty_tx 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.
|
|
*/
|
|
rrpriv->tx_full = 0;
|
|
rrpriv->cur_rx = 0;
|
|
rrpriv->dirty_rx = rrpriv->dirty_tx = 0;
|
|
|
|
rr_reset(dev);
|
|
|
|
/* Tuning values */
|
|
writel(0x5000, ®s->ConRetry);
|
|
writel(0x100, ®s->ConRetryTmr);
|
|
writel(0x500000, ®s->ConTmout);
|
|
writel(0x60, ®s->IntrTmr);
|
|
writel(0x500000, ®s->TxDataMvTimeout);
|
|
writel(0x200000, ®s->RxDataMvTimeout);
|
|
writel(0x80, ®s->WriteDmaThresh);
|
|
writel(0x80, ®s->ReadDmaThresh);
|
|
|
|
rrpriv->fw_running = 0;
|
|
wmb();
|
|
|
|
hostctrl &= ~(HALT_NIC | INVALID_INST_B | PARITY_ERR);
|
|
writel(hostctrl, ®s->HostCtrl);
|
|
wmb();
|
|
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
|
|
for (i = 0; i < RX_RING_ENTRIES; i++) {
|
|
struct sk_buff *skb;
|
|
dma_addr_t addr;
|
|
|
|
rrpriv->rx_ring[i].mode = 0;
|
|
skb = alloc_skb(dev->mtu + HIPPI_HLEN, GFP_ATOMIC);
|
|
if (!skb) {
|
|
printk(KERN_WARNING "%s: Unable to allocate memory "
|
|
"for receive ring - halting NIC\n", dev->name);
|
|
ecode = -ENOMEM;
|
|
goto error;
|
|
}
|
|
rrpriv->rx_skbuff[i] = skb;
|
|
addr = pci_map_single(rrpriv->pci_dev, skb->data,
|
|
dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE);
|
|
/*
|
|
* Sanity test to see if we conflict with the DMA
|
|
* limitations of the Roadrunner.
|
|
*/
|
|
if ((((unsigned long)skb->data) & 0xfff) > ~65320)
|
|
printk("skb alloc error\n");
|
|
|
|
set_rraddr(&rrpriv->rx_ring[i].addr, addr);
|
|
rrpriv->rx_ring[i].size = dev->mtu + HIPPI_HLEN;
|
|
}
|
|
|
|
rrpriv->rx_ctrl[4].entry_size = sizeof(struct rx_desc);
|
|
rrpriv->rx_ctrl[4].entries = RX_RING_ENTRIES;
|
|
rrpriv->rx_ctrl[4].mode = 8;
|
|
rrpriv->rx_ctrl[4].pi = 0;
|
|
wmb();
|
|
set_rraddr(&rrpriv->rx_ctrl[4].rngptr, rrpriv->rx_ring_dma);
|
|
|
|
udelay(1000);
|
|
|
|
/*
|
|
* Now start the FirmWare.
|
|
*/
|
|
cmd.code = C_START_FW;
|
|
cmd.ring = 0;
|
|
cmd.index = 0;
|
|
|
|
rr_issue_cmd(rrpriv, &cmd);
|
|
|
|
/*
|
|
* Give the FirmWare time to chew on the `get running' command.
|
|
*/
|
|
myjif = jiffies + 5 * HZ;
|
|
while (time_before(jiffies, myjif) && !rrpriv->fw_running)
|
|
cpu_relax();
|
|
|
|
netif_start_queue(dev);
|
|
|
|
return ecode;
|
|
|
|
error:
|
|
/*
|
|
* We might have gotten here because we are out of memory,
|
|
* make sure we release everything we allocated before failing
|
|
*/
|
|
for (i = 0; i < RX_RING_ENTRIES; i++) {
|
|
struct sk_buff *skb = rrpriv->rx_skbuff[i];
|
|
|
|
if (skb) {
|
|
pci_unmap_single(rrpriv->pci_dev,
|
|
rrpriv->rx_ring[i].addr.addrlo,
|
|
dev->mtu + HIPPI_HLEN,
|
|
PCI_DMA_FROMDEVICE);
|
|
rrpriv->rx_ring[i].size = 0;
|
|
set_rraddr(&rrpriv->rx_ring[i].addr, 0);
|
|
dev_kfree_skb(skb);
|
|
rrpriv->rx_skbuff[i] = NULL;
|
|
}
|
|
}
|
|
return ecode;
|
|
}
|
|
|
|
|
|
/*
|
|
* 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 rr_handle_event(struct net_device *dev, u32 prodidx, u32 eidx)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
u32 tmp;
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
while (prodidx != eidx){
|
|
switch (rrpriv->evt_ring[eidx].code){
|
|
case E_NIC_UP:
|
|
tmp = readl(®s->FwRev);
|
|
printk(KERN_INFO "%s: Firmware revision %i.%i.%i "
|
|
"up and running\n", dev->name,
|
|
(tmp >> 16), ((tmp >> 8) & 0xff), (tmp & 0xff));
|
|
rrpriv->fw_running = 1;
|
|
writel(RX_RING_ENTRIES - 1, ®s->IpRxPi);
|
|
wmb();
|
|
break;
|
|
case E_LINK_ON:
|
|
printk(KERN_INFO "%s: Optical link ON\n", dev->name);
|
|
break;
|
|
case E_LINK_OFF:
|
|
printk(KERN_INFO "%s: Optical link OFF\n", dev->name);
|
|
break;
|
|
case E_RX_IDLE:
|
|
printk(KERN_WARNING "%s: RX data not moving\n",
|
|
dev->name);
|
|
goto drop;
|
|
case E_WATCHDOG:
|
|
printk(KERN_INFO "%s: The watchdog is here to see "
|
|
"us\n", dev->name);
|
|
break;
|
|
case E_INTERN_ERR:
|
|
printk(KERN_ERR "%s: HIPPI Internal NIC error\n",
|
|
dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
case E_HOST_ERR:
|
|
printk(KERN_ERR "%s: Host software error\n",
|
|
dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
/*
|
|
* TX events.
|
|
*/
|
|
case E_CON_REJ:
|
|
printk(KERN_WARNING "%s: Connection rejected\n",
|
|
dev->name);
|
|
dev->stats.tx_aborted_errors++;
|
|
break;
|
|
case E_CON_TMOUT:
|
|
printk(KERN_WARNING "%s: Connection timeout\n",
|
|
dev->name);
|
|
break;
|
|
case E_DISC_ERR:
|
|
printk(KERN_WARNING "%s: HIPPI disconnect error\n",
|
|
dev->name);
|
|
dev->stats.tx_aborted_errors++;
|
|
break;
|
|
case E_INT_PRTY:
|
|
printk(KERN_ERR "%s: HIPPI Internal Parity error\n",
|
|
dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
case E_TX_IDLE:
|
|
printk(KERN_WARNING "%s: Transmitter idle\n",
|
|
dev->name);
|
|
break;
|
|
case E_TX_LINK_DROP:
|
|
printk(KERN_WARNING "%s: Link lost during transmit\n",
|
|
dev->name);
|
|
dev->stats.tx_aborted_errors++;
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
case E_TX_INV_RNG:
|
|
printk(KERN_ERR "%s: Invalid send ring block\n",
|
|
dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
case E_TX_INV_BUF:
|
|
printk(KERN_ERR "%s: Invalid send buffer address\n",
|
|
dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
case E_TX_INV_DSC:
|
|
printk(KERN_ERR "%s: Invalid descriptor address\n",
|
|
dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
/*
|
|
* RX events.
|
|
*/
|
|
case E_RX_RNG_OUT:
|
|
printk(KERN_INFO "%s: Receive ring full\n", dev->name);
|
|
break;
|
|
|
|
case E_RX_PAR_ERR:
|
|
printk(KERN_WARNING "%s: Receive parity error\n",
|
|
dev->name);
|
|
goto drop;
|
|
case E_RX_LLRC_ERR:
|
|
printk(KERN_WARNING "%s: Receive LLRC error\n",
|
|
dev->name);
|
|
goto drop;
|
|
case E_PKT_LN_ERR:
|
|
printk(KERN_WARNING "%s: Receive packet length "
|
|
"error\n", dev->name);
|
|
goto drop;
|
|
case E_DTA_CKSM_ERR:
|
|
printk(KERN_WARNING "%s: Data checksum error\n",
|
|
dev->name);
|
|
goto drop;
|
|
case E_SHT_BST:
|
|
printk(KERN_WARNING "%s: Unexpected short burst "
|
|
"error\n", dev->name);
|
|
goto drop;
|
|
case E_STATE_ERR:
|
|
printk(KERN_WARNING "%s: Recv. state transition"
|
|
" error\n", dev->name);
|
|
goto drop;
|
|
case E_UNEXP_DATA:
|
|
printk(KERN_WARNING "%s: Unexpected data error\n",
|
|
dev->name);
|
|
goto drop;
|
|
case E_LST_LNK_ERR:
|
|
printk(KERN_WARNING "%s: Link lost error\n",
|
|
dev->name);
|
|
goto drop;
|
|
case E_FRM_ERR:
|
|
printk(KERN_WARNING "%s: Framming Error\n",
|
|
dev->name);
|
|
goto drop;
|
|
case E_FLG_SYN_ERR:
|
|
printk(KERN_WARNING "%s: Flag sync. lost during "
|
|
"packet\n", dev->name);
|
|
goto drop;
|
|
case E_RX_INV_BUF:
|
|
printk(KERN_ERR "%s: Invalid receive buffer "
|
|
"address\n", dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
case E_RX_INV_DSC:
|
|
printk(KERN_ERR "%s: Invalid receive descriptor "
|
|
"address\n", dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
case E_RNG_BLK:
|
|
printk(KERN_ERR "%s: Invalid ring block\n",
|
|
dev->name);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
wmb();
|
|
break;
|
|
drop:
|
|
/* Label packet to be dropped.
|
|
* Actual dropping occurs in rx
|
|
* handling.
|
|
*
|
|
* The index of packet we get to drop is
|
|
* the index of the packet following
|
|
* the bad packet. -kbf
|
|
*/
|
|
{
|
|
u16 index = rrpriv->evt_ring[eidx].index;
|
|
index = (index + (RX_RING_ENTRIES - 1)) %
|
|
RX_RING_ENTRIES;
|
|
rrpriv->rx_ring[index].mode |=
|
|
(PACKET_BAD | PACKET_END);
|
|
}
|
|
break;
|
|
default:
|
|
printk(KERN_WARNING "%s: Unhandled event 0x%02x\n",
|
|
dev->name, rrpriv->evt_ring[eidx].code);
|
|
}
|
|
eidx = (eidx + 1) % EVT_RING_ENTRIES;
|
|
}
|
|
|
|
rrpriv->info->evt_ctrl.pi = eidx;
|
|
wmb();
|
|
return eidx;
|
|
}
|
|
|
|
|
|
static void rx_int(struct net_device *dev, u32 rxlimit, u32 index)
|
|
{
|
|
struct rr_private *rrpriv = netdev_priv(dev);
|
|
struct rr_regs __iomem *regs = rrpriv->regs;
|
|
|
|
do {
|
|
struct rx_desc *desc;
|
|
u32 pkt_len;
|
|
|
|
desc = &(rrpriv->rx_ring[index]);
|
|
pkt_len = desc->size;
|
|
#if (DEBUG > 2)
|
|
printk("index %i, rxlimit %i\n", index, rxlimit);
|
|
printk("len %x, mode %x\n", pkt_len, desc->mode);
|
|
#endif
|
|
if ( (rrpriv->rx_ring[index].mode & PACKET_BAD) == PACKET_BAD){
|
|
dev->stats.rx_dropped++;
|
|
goto defer;
|
|
}
|
|
|
|
if (pkt_len > 0){
|
|
struct sk_buff *skb, *rx_skb;
|
|
|
|
rx_skb = rrpriv->rx_skbuff[index];
|
|
|
|
if (pkt_len < PKT_COPY_THRESHOLD) {
|
|
skb = alloc_skb(pkt_len, GFP_ATOMIC);
|
|
if (skb == NULL){
|
|
printk(KERN_WARNING "%s: Unable to allocate skb (%i bytes), deferring packet\n", dev->name, pkt_len);
|
|
dev->stats.rx_dropped++;
|
|
goto defer;
|
|
} else {
|
|
pci_dma_sync_single_for_cpu(rrpriv->pci_dev,
|
|
desc->addr.addrlo,
|
|
pkt_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
memcpy(skb_put(skb, pkt_len),
|
|
rx_skb->data, pkt_len);
|
|
|
|
pci_dma_sync_single_for_device(rrpriv->pci_dev,
|
|
desc->addr.addrlo,
|
|
pkt_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
}
|
|
}else{
|
|
struct sk_buff *newskb;
|
|
|
|
newskb = alloc_skb(dev->mtu + HIPPI_HLEN,
|
|
GFP_ATOMIC);
|
|
if (newskb){
|
|
dma_addr_t addr;
|
|
|
|
pci_unmap_single(rrpriv->pci_dev,
|
|
desc->addr.addrlo, dev->mtu +
|
|
HIPPI_HLEN, PCI_DMA_FROMDEVICE);
|
|
skb = rx_skb;
|
|
skb_put(skb, pkt_len);
|
|
rrpriv->rx_skbuff[index] = newskb;
|
|
addr = pci_map_single(rrpriv->pci_dev,
|
|
newskb->data,
|
|
dev->mtu + HIPPI_HLEN,
|
|
PCI_DMA_FROMDEVICE);
|
|
set_rraddr(&desc->addr, addr);
|
|
} else {
|
|
printk("%s: Out of memory, deferring "
|
|
"packet\n", dev->name);
|
|
dev->stats.rx_dropped++;
|
|
goto defer;
|
|
}
|
|
}
|
|
skb->protocol = hippi_type_trans(skb, dev);
|
|
|
|
netif_rx(skb); /* send it up */
|
|
|
|
dev->last_rx = jiffies;
|
|
dev->stats.rx_packets++;
|
|
dev->stats.rx_bytes += pkt_len;
|
|
}
|
|
defer:
|
|
desc->mode = 0;
|
|
desc->size = dev->mtu + HIPPI_HLEN;
|
|
|
|
if ((index & 7) == 7)
|
|
writel(index, ®s->IpRxPi);
|
|
|
|
index = (index + 1) % RX_RING_ENTRIES;
|
|
} while(index != rxlimit);
|
|
|
|
rrpriv->cur_rx = index;
|
|
wmb();
|
|
}
|
|
|
|
|
|
static irqreturn_t rr_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
struct net_device *dev = (struct net_device *)dev_id;
|
|
u32 prodidx, rxindex, eidx, txcsmr, rxlimit, txcon;
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
if (!(readl(®s->HostCtrl) & RR_INT))
|
|
return IRQ_NONE;
|
|
|
|
spin_lock(&rrpriv->lock);
|
|
|
|
prodidx = readl(®s->EvtPrd);
|
|
txcsmr = (prodidx >> 8) & 0xff;
|
|
rxlimit = (prodidx >> 16) & 0xff;
|
|
prodidx &= 0xff;
|
|
|
|
#if (DEBUG > 2)
|
|
printk("%s: interrupt, prodidx = %i, eidx = %i\n", dev->name,
|
|
prodidx, rrpriv->info->evt_ctrl.pi);
|
|
#endif
|
|
/*
|
|
* Order here is important. We must handle events
|
|
* before doing anything else in order to catch
|
|
* such things as LLRC errors, etc -kbf
|
|
*/
|
|
|
|
eidx = rrpriv->info->evt_ctrl.pi;
|
|
if (prodidx != eidx)
|
|
eidx = rr_handle_event(dev, prodidx, eidx);
|
|
|
|
rxindex = rrpriv->cur_rx;
|
|
if (rxindex != rxlimit)
|
|
rx_int(dev, rxlimit, rxindex);
|
|
|
|
txcon = rrpriv->dirty_tx;
|
|
if (txcsmr != txcon) {
|
|
do {
|
|
/* Due to occational firmware TX producer/consumer out
|
|
* of sync. error need to check entry in ring -kbf
|
|
*/
|
|
if(rrpriv->tx_skbuff[txcon]){
|
|
struct tx_desc *desc;
|
|
struct sk_buff *skb;
|
|
|
|
desc = &(rrpriv->tx_ring[txcon]);
|
|
skb = rrpriv->tx_skbuff[txcon];
|
|
|
|
dev->stats.tx_packets++;
|
|
dev->stats.tx_bytes += skb->len;
|
|
|
|
pci_unmap_single(rrpriv->pci_dev,
|
|
desc->addr.addrlo, skb->len,
|
|
PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_irq(skb);
|
|
|
|
rrpriv->tx_skbuff[txcon] = NULL;
|
|
desc->size = 0;
|
|
set_rraddr(&rrpriv->tx_ring[txcon].addr, 0);
|
|
desc->mode = 0;
|
|
}
|
|
txcon = (txcon + 1) % TX_RING_ENTRIES;
|
|
} while (txcsmr != txcon);
|
|
wmb();
|
|
|
|
rrpriv->dirty_tx = txcon;
|
|
if (rrpriv->tx_full && rr_if_busy(dev) &&
|
|
(((rrpriv->info->tx_ctrl.pi + 1) % TX_RING_ENTRIES)
|
|
!= rrpriv->dirty_tx)){
|
|
rrpriv->tx_full = 0;
|
|
netif_wake_queue(dev);
|
|
}
|
|
}
|
|
|
|
eidx |= ((txcsmr << 8) | (rxlimit << 16));
|
|
writel(eidx, ®s->EvtCon);
|
|
wmb();
|
|
|
|
spin_unlock(&rrpriv->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static inline void rr_raz_tx(struct rr_private *rrpriv,
|
|
struct net_device *dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < TX_RING_ENTRIES; i++) {
|
|
struct sk_buff *skb = rrpriv->tx_skbuff[i];
|
|
|
|
if (skb) {
|
|
struct tx_desc *desc = &(rrpriv->tx_ring[i]);
|
|
|
|
pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo,
|
|
skb->len, PCI_DMA_TODEVICE);
|
|
desc->size = 0;
|
|
set_rraddr(&desc->addr, 0);
|
|
dev_kfree_skb(skb);
|
|
rrpriv->tx_skbuff[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static inline void rr_raz_rx(struct rr_private *rrpriv,
|
|
struct net_device *dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < RX_RING_ENTRIES; i++) {
|
|
struct sk_buff *skb = rrpriv->rx_skbuff[i];
|
|
|
|
if (skb) {
|
|
struct rx_desc *desc = &(rrpriv->rx_ring[i]);
|
|
|
|
pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo,
|
|
dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE);
|
|
desc->size = 0;
|
|
set_rraddr(&desc->addr, 0);
|
|
dev_kfree_skb(skb);
|
|
rrpriv->rx_skbuff[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void rr_timer(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *)data;
|
|
struct rr_private *rrpriv = netdev_priv(dev);
|
|
struct rr_regs __iomem *regs = rrpriv->regs;
|
|
unsigned long flags;
|
|
|
|
if (readl(®s->HostCtrl) & NIC_HALTED){
|
|
printk("%s: Restarting nic\n", dev->name);
|
|
memset(rrpriv->rx_ctrl, 0, 256 * sizeof(struct ring_ctrl));
|
|
memset(rrpriv->info, 0, sizeof(struct rr_info));
|
|
wmb();
|
|
|
|
rr_raz_tx(rrpriv, dev);
|
|
rr_raz_rx(rrpriv, dev);
|
|
|
|
if (rr_init1(dev)) {
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
|
|
®s->HostCtrl);
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
}
|
|
}
|
|
rrpriv->timer.expires = RUN_AT(5*HZ);
|
|
add_timer(&rrpriv->timer);
|
|
}
|
|
|
|
|
|
static int rr_open(struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv = netdev_priv(dev);
|
|
struct pci_dev *pdev = rrpriv->pci_dev;
|
|
struct rr_regs __iomem *regs;
|
|
int ecode = 0;
|
|
unsigned long flags;
|
|
dma_addr_t dma_addr;
|
|
|
|
regs = rrpriv->regs;
|
|
|
|
if (rrpriv->fw_rev < 0x00020000) {
|
|
printk(KERN_WARNING "%s: trying to configure device with "
|
|
"obsolete firmware\n", dev->name);
|
|
ecode = -EBUSY;
|
|
goto error;
|
|
}
|
|
|
|
rrpriv->rx_ctrl = pci_alloc_consistent(pdev,
|
|
256 * sizeof(struct ring_ctrl),
|
|
&dma_addr);
|
|
if (!rrpriv->rx_ctrl) {
|
|
ecode = -ENOMEM;
|
|
goto error;
|
|
}
|
|
rrpriv->rx_ctrl_dma = dma_addr;
|
|
memset(rrpriv->rx_ctrl, 0, 256*sizeof(struct ring_ctrl));
|
|
|
|
rrpriv->info = pci_alloc_consistent(pdev, sizeof(struct rr_info),
|
|
&dma_addr);
|
|
if (!rrpriv->info) {
|
|
ecode = -ENOMEM;
|
|
goto error;
|
|
}
|
|
rrpriv->info_dma = dma_addr;
|
|
memset(rrpriv->info, 0, sizeof(struct rr_info));
|
|
wmb();
|
|
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl);
|
|
readl(®s->HostCtrl);
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
|
|
if (request_irq(dev->irq, rr_interrupt, IRQF_SHARED, dev->name, dev)) {
|
|
printk(KERN_WARNING "%s: Requested IRQ %d is busy\n",
|
|
dev->name, dev->irq);
|
|
ecode = -EAGAIN;
|
|
goto error;
|
|
}
|
|
|
|
if ((ecode = rr_init1(dev)))
|
|
goto error;
|
|
|
|
/* Set the timer to switch to check for link beat and perhaps switch
|
|
to an alternate media type. */
|
|
init_timer(&rrpriv->timer);
|
|
rrpriv->timer.expires = RUN_AT(5*HZ); /* 5 sec. watchdog */
|
|
rrpriv->timer.data = (unsigned long)dev;
|
|
rrpriv->timer.function = &rr_timer; /* timer handler */
|
|
add_timer(&rrpriv->timer);
|
|
|
|
netif_start_queue(dev);
|
|
|
|
return ecode;
|
|
|
|
error:
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl);
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
|
|
if (rrpriv->info) {
|
|
pci_free_consistent(pdev, sizeof(struct rr_info), rrpriv->info,
|
|
rrpriv->info_dma);
|
|
rrpriv->info = NULL;
|
|
}
|
|
if (rrpriv->rx_ctrl) {
|
|
pci_free_consistent(pdev, sizeof(struct ring_ctrl),
|
|
rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma);
|
|
rrpriv->rx_ctrl = NULL;
|
|
}
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
return ecode;
|
|
}
|
|
|
|
|
|
static void rr_dump(struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
u32 index, cons;
|
|
short i;
|
|
int len;
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
printk("%s: dumping NIC TX rings\n", dev->name);
|
|
|
|
printk("RxPrd %08x, TxPrd %02x, EvtPrd %08x, TxPi %02x, TxCtrlPi %02x\n",
|
|
readl(®s->RxPrd), readl(®s->TxPrd),
|
|
readl(®s->EvtPrd), readl(®s->TxPi),
|
|
rrpriv->info->tx_ctrl.pi);
|
|
|
|
printk("Error code 0x%x\n", readl(®s->Fail1));
|
|
|
|
index = (((readl(®s->EvtPrd) >> 8) & 0xff ) - 1) % EVT_RING_ENTRIES;
|
|
cons = rrpriv->dirty_tx;
|
|
printk("TX ring index %i, TX consumer %i\n",
|
|
index, cons);
|
|
|
|
if (rrpriv->tx_skbuff[index]){
|
|
len = min_t(int, 0x80, rrpriv->tx_skbuff[index]->len);
|
|
printk("skbuff for index %i is valid - dumping data (0x%x bytes - DMA len 0x%x)\n", index, len, rrpriv->tx_ring[index].size);
|
|
for (i = 0; i < len; i++){
|
|
if (!(i & 7))
|
|
printk("\n");
|
|
printk("%02x ", (unsigned char) rrpriv->tx_skbuff[index]->data[i]);
|
|
}
|
|
printk("\n");
|
|
}
|
|
|
|
if (rrpriv->tx_skbuff[cons]){
|
|
len = min_t(int, 0x80, rrpriv->tx_skbuff[cons]->len);
|
|
printk("skbuff for cons %i is valid - dumping data (0x%x bytes - skbuff len 0x%x)\n", cons, len, rrpriv->tx_skbuff[cons]->len);
|
|
printk("mode 0x%x, size 0x%x,\n phys %08Lx, skbuff-addr %08lx, truesize 0x%x\n",
|
|
rrpriv->tx_ring[cons].mode,
|
|
rrpriv->tx_ring[cons].size,
|
|
(unsigned long long) rrpriv->tx_ring[cons].addr.addrlo,
|
|
(unsigned long)rrpriv->tx_skbuff[cons]->data,
|
|
(unsigned int)rrpriv->tx_skbuff[cons]->truesize);
|
|
for (i = 0; i < len; i++){
|
|
if (!(i & 7))
|
|
printk("\n");
|
|
printk("%02x ", (unsigned char)rrpriv->tx_ring[cons].size);
|
|
}
|
|
printk("\n");
|
|
}
|
|
|
|
printk("dumping TX ring info:\n");
|
|
for (i = 0; i < TX_RING_ENTRIES; i++)
|
|
printk("mode 0x%x, size 0x%x, phys-addr %08Lx\n",
|
|
rrpriv->tx_ring[i].mode,
|
|
rrpriv->tx_ring[i].size,
|
|
(unsigned long long) rrpriv->tx_ring[i].addr.addrlo);
|
|
|
|
}
|
|
|
|
|
|
static int rr_close(struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
unsigned long flags;
|
|
u32 tmp;
|
|
short i;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
/*
|
|
* Lock to make sure we are not cleaning up while another CPU
|
|
* is handling interrupts.
|
|
*/
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
|
|
tmp = readl(®s->HostCtrl);
|
|
if (tmp & NIC_HALTED){
|
|
printk("%s: NIC already halted\n", dev->name);
|
|
rr_dump(dev);
|
|
}else{
|
|
tmp |= HALT_NIC | RR_CLEAR_INT;
|
|
writel(tmp, ®s->HostCtrl);
|
|
readl(®s->HostCtrl);
|
|
}
|
|
|
|
rrpriv->fw_running = 0;
|
|
|
|
del_timer_sync(&rrpriv->timer);
|
|
|
|
writel(0, ®s->TxPi);
|
|
writel(0, ®s->IpRxPi);
|
|
|
|
writel(0, ®s->EvtCon);
|
|
writel(0, ®s->EvtPrd);
|
|
|
|
for (i = 0; i < CMD_RING_ENTRIES; i++)
|
|
writel(0, ®s->CmdRing[i]);
|
|
|
|
rrpriv->info->tx_ctrl.entries = 0;
|
|
rrpriv->info->cmd_ctrl.pi = 0;
|
|
rrpriv->info->evt_ctrl.pi = 0;
|
|
rrpriv->rx_ctrl[4].entries = 0;
|
|
|
|
rr_raz_tx(rrpriv, dev);
|
|
rr_raz_rx(rrpriv, dev);
|
|
|
|
pci_free_consistent(rrpriv->pci_dev, 256 * sizeof(struct ring_ctrl),
|
|
rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma);
|
|
rrpriv->rx_ctrl = NULL;
|
|
|
|
pci_free_consistent(rrpriv->pci_dev, sizeof(struct rr_info),
|
|
rrpriv->info, rrpriv->info_dma);
|
|
rrpriv->info = NULL;
|
|
|
|
free_irq(dev->irq, dev);
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int rr_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv = netdev_priv(dev);
|
|
struct rr_regs __iomem *regs = rrpriv->regs;
|
|
struct hippi_cb *hcb = (struct hippi_cb *) skb->cb;
|
|
struct ring_ctrl *txctrl;
|
|
unsigned long flags;
|
|
u32 index, len = skb->len;
|
|
u32 *ifield;
|
|
struct sk_buff *new_skb;
|
|
|
|
if (readl(®s->Mode) & FATAL_ERR)
|
|
printk("error codes Fail1 %02x, Fail2 %02x\n",
|
|
readl(®s->Fail1), readl(®s->Fail2));
|
|
|
|
/*
|
|
* We probably need to deal with tbusy here to prevent overruns.
|
|
*/
|
|
|
|
if (skb_headroom(skb) < 8){
|
|
printk("incoming skb too small - reallocating\n");
|
|
if (!(new_skb = dev_alloc_skb(len + 8))) {
|
|
dev_kfree_skb(skb);
|
|
netif_wake_queue(dev);
|
|
return -EBUSY;
|
|
}
|
|
skb_reserve(new_skb, 8);
|
|
skb_put(new_skb, len);
|
|
skb_copy_from_linear_data(skb, new_skb->data, len);
|
|
dev_kfree_skb(skb);
|
|
skb = new_skb;
|
|
}
|
|
|
|
ifield = (u32 *)skb_push(skb, 8);
|
|
|
|
ifield[0] = 0;
|
|
ifield[1] = hcb->ifield;
|
|
|
|
/*
|
|
* We don't need the lock before we are actually going to start
|
|
* fiddling with the control blocks.
|
|
*/
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
|
|
txctrl = &rrpriv->info->tx_ctrl;
|
|
|
|
index = txctrl->pi;
|
|
|
|
rrpriv->tx_skbuff[index] = skb;
|
|
set_rraddr(&rrpriv->tx_ring[index].addr, pci_map_single(
|
|
rrpriv->pci_dev, skb->data, len + 8, PCI_DMA_TODEVICE));
|
|
rrpriv->tx_ring[index].size = len + 8; /* include IFIELD */
|
|
rrpriv->tx_ring[index].mode = PACKET_START | PACKET_END;
|
|
txctrl->pi = (index + 1) % TX_RING_ENTRIES;
|
|
wmb();
|
|
writel(txctrl->pi, ®s->TxPi);
|
|
|
|
if (txctrl->pi == rrpriv->dirty_tx){
|
|
rrpriv->tx_full = 1;
|
|
netif_stop_queue(dev);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
|
|
dev->trans_start = jiffies;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Read the firmware out of the EEPROM and put it into the SRAM
|
|
* (or from user space - later)
|
|
*
|
|
* This operation requires the NIC to be halted and is performed with
|
|
* interrupts disabled and with the spinlock hold.
|
|
*/
|
|
static int rr_load_firmware(struct net_device *dev)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
struct rr_regs __iomem *regs;
|
|
size_t eptr, segptr;
|
|
int i, j;
|
|
u32 localctrl, sptr, len, tmp;
|
|
u32 p2len, p2size, nr_seg, revision, io, sram_size;
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
regs = rrpriv->regs;
|
|
|
|
if (dev->flags & IFF_UP)
|
|
return -EBUSY;
|
|
|
|
if (!(readl(®s->HostCtrl) & NIC_HALTED)){
|
|
printk("%s: Trying to load firmware to a running NIC.\n",
|
|
dev->name);
|
|
return -EBUSY;
|
|
}
|
|
|
|
localctrl = readl(®s->LocalCtrl);
|
|
writel(0, ®s->LocalCtrl);
|
|
|
|
writel(0, ®s->EvtPrd);
|
|
writel(0, ®s->RxPrd);
|
|
writel(0, ®s->TxPrd);
|
|
|
|
/*
|
|
* First wipe the entire SRAM, otherwise we might run into all
|
|
* kinds of trouble ... sigh, this took almost all afternoon
|
|
* to track down ;-(
|
|
*/
|
|
io = readl(®s->ExtIo);
|
|
writel(0, ®s->ExtIo);
|
|
sram_size = rr_read_eeprom_word(rrpriv, 8);
|
|
|
|
for (i = 200; i < sram_size / 4; i++){
|
|
writel(i * 4, ®s->WinBase);
|
|
mb();
|
|
writel(0, ®s->WinData);
|
|
mb();
|
|
}
|
|
writel(io, ®s->ExtIo);
|
|
mb();
|
|
|
|
eptr = rr_read_eeprom_word(rrpriv,
|
|
offsetof(struct eeprom, rncd_info.AddrRunCodeSegs));
|
|
eptr = ((eptr & 0x1fffff) >> 3);
|
|
|
|
p2len = rr_read_eeprom_word(rrpriv, 0x83*4);
|
|
p2len = (p2len << 2);
|
|
p2size = rr_read_eeprom_word(rrpriv, 0x84*4);
|
|
p2size = ((p2size & 0x1fffff) >> 3);
|
|
|
|
if ((eptr < p2size) || (eptr > (p2size + p2len))){
|
|
printk("%s: eptr is invalid\n", dev->name);
|
|
goto out;
|
|
}
|
|
|
|
revision = rr_read_eeprom_word(rrpriv,
|
|
offsetof(struct eeprom, manf.HeaderFmt));
|
|
|
|
if (revision != 1){
|
|
printk("%s: invalid firmware format (%i)\n",
|
|
dev->name, revision);
|
|
goto out;
|
|
}
|
|
|
|
nr_seg = rr_read_eeprom_word(rrpriv, eptr);
|
|
eptr +=4;
|
|
#if (DEBUG > 1)
|
|
printk("%s: nr_seg %i\n", dev->name, nr_seg);
|
|
#endif
|
|
|
|
for (i = 0; i < nr_seg; i++){
|
|
sptr = rr_read_eeprom_word(rrpriv, eptr);
|
|
eptr += 4;
|
|
len = rr_read_eeprom_word(rrpriv, eptr);
|
|
eptr += 4;
|
|
segptr = rr_read_eeprom_word(rrpriv, eptr);
|
|
segptr = ((segptr & 0x1fffff) >> 3);
|
|
eptr += 4;
|
|
#if (DEBUG > 1)
|
|
printk("%s: segment %i, sram address %06x, length %04x, segptr %06x\n",
|
|
dev->name, i, sptr, len, segptr);
|
|
#endif
|
|
for (j = 0; j < len; j++){
|
|
tmp = rr_read_eeprom_word(rrpriv, segptr);
|
|
writel(sptr, ®s->WinBase);
|
|
mb();
|
|
writel(tmp, ®s->WinData);
|
|
mb();
|
|
segptr += 4;
|
|
sptr += 4;
|
|
}
|
|
}
|
|
|
|
out:
|
|
writel(localctrl, ®s->LocalCtrl);
|
|
mb();
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int rr_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct rr_private *rrpriv;
|
|
unsigned char *image, *oldimage;
|
|
unsigned long flags;
|
|
unsigned int i;
|
|
int error = -EOPNOTSUPP;
|
|
|
|
rrpriv = netdev_priv(dev);
|
|
|
|
switch(cmd){
|
|
case SIOCRRGFW:
|
|
if (!capable(CAP_SYS_RAWIO)){
|
|
return -EPERM;
|
|
}
|
|
|
|
image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL);
|
|
if (!image){
|
|
printk(KERN_ERR "%s: Unable to allocate memory "
|
|
"for EEPROM image\n", dev->name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
|
|
if (rrpriv->fw_running){
|
|
printk("%s: Firmware already running\n", dev->name);
|
|
error = -EPERM;
|
|
goto gf_out;
|
|
}
|
|
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
i = rr_read_eeprom(rrpriv, 0, image, EEPROM_BYTES);
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
if (i != EEPROM_BYTES){
|
|
printk(KERN_ERR "%s: Error reading EEPROM\n",
|
|
dev->name);
|
|
error = -EFAULT;
|
|
goto gf_out;
|
|
}
|
|
error = copy_to_user(rq->ifr_data, image, EEPROM_BYTES);
|
|
if (error)
|
|
error = -EFAULT;
|
|
gf_out:
|
|
kfree(image);
|
|
return error;
|
|
|
|
case SIOCRRPFW:
|
|
if (!capable(CAP_SYS_RAWIO)){
|
|
return -EPERM;
|
|
}
|
|
|
|
image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL);
|
|
oldimage = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL);
|
|
if (!image || !oldimage) {
|
|
printk(KERN_ERR "%s: Unable to allocate memory "
|
|
"for EEPROM image\n", dev->name);
|
|
error = -ENOMEM;
|
|
goto wf_out;
|
|
}
|
|
|
|
error = copy_from_user(image, rq->ifr_data, EEPROM_BYTES);
|
|
if (error) {
|
|
error = -EFAULT;
|
|
goto wf_out;
|
|
}
|
|
|
|
if (rrpriv->fw_running){
|
|
printk("%s: Firmware already running\n", dev->name);
|
|
error = -EPERM;
|
|
goto wf_out;
|
|
}
|
|
|
|
printk("%s: Updating EEPROM firmware\n", dev->name);
|
|
|
|
spin_lock_irqsave(&rrpriv->lock, flags);
|
|
error = write_eeprom(rrpriv, 0, image, EEPROM_BYTES);
|
|
if (error)
|
|
printk(KERN_ERR "%s: Error writing EEPROM\n",
|
|
dev->name);
|
|
|
|
i = rr_read_eeprom(rrpriv, 0, oldimage, EEPROM_BYTES);
|
|
spin_unlock_irqrestore(&rrpriv->lock, flags);
|
|
|
|
if (i != EEPROM_BYTES)
|
|
printk(KERN_ERR "%s: Error reading back EEPROM "
|
|
"image\n", dev->name);
|
|
|
|
error = memcmp(image, oldimage, EEPROM_BYTES);
|
|
if (error){
|
|
printk(KERN_ERR "%s: Error verifying EEPROM image\n",
|
|
dev->name);
|
|
error = -EFAULT;
|
|
}
|
|
wf_out:
|
|
kfree(oldimage);
|
|
kfree(image);
|
|
return error;
|
|
|
|
case SIOCRRID:
|
|
return put_user(0x52523032, (int __user *)rq->ifr_data);
|
|
default:
|
|
return error;
|
|
}
|
|
}
|
|
|
|
static struct pci_device_id rr_pci_tbl[] = {
|
|
{ PCI_VENDOR_ID_ESSENTIAL, PCI_DEVICE_ID_ESSENTIAL_ROADRUNNER,
|
|
PCI_ANY_ID, PCI_ANY_ID, },
|
|
{ 0,}
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, rr_pci_tbl);
|
|
|
|
static struct pci_driver rr_driver = {
|
|
.name = "rrunner",
|
|
.id_table = rr_pci_tbl,
|
|
.probe = rr_init_one,
|
|
.remove = __devexit_p(rr_remove_one),
|
|
};
|
|
|
|
static int __init rr_init_module(void)
|
|
{
|
|
return pci_register_driver(&rr_driver);
|
|
}
|
|
|
|
static void __exit rr_cleanup_module(void)
|
|
{
|
|
pci_unregister_driver(&rr_driver);
|
|
}
|
|
|
|
module_init(rr_init_module);
|
|
module_exit(rr_cleanup_module);
|
|
|
|
/*
|
|
* Local variables:
|
|
* compile-command: "gcc -D__KERNEL__ -I../../include -Wall -Wstrict-prototypes -O2 -pipe -fomit-frame-pointer -fno-strength-reduce -m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2 -DMODULE -DMODVERSIONS -include ../../include/linux/modversions.h -c rrunner.c"
|
|
* End:
|
|
*/
|