diff options
Diffstat (limited to 'drivers/net/hippi/rrunner.c')
| -rw-r--r-- | drivers/net/hippi/rrunner.c | 1687 |
1 files changed, 1687 insertions, 0 deletions
diff --git a/drivers/net/hippi/rrunner.c b/drivers/net/hippi/rrunner.c new file mode 100644 index 000000000..aa8f828a0 --- /dev/null +++ b/drivers/net/hippi/rrunner.c @@ -0,0 +1,1687 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * 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. + * + * 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/delay.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <net/sock.h> + +#include <asm/cache.h> +#include <asm/byteorder.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <linux/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 const char version[] = +"rrunner.c: v0.50 11/11/2002 Jes Sorensen (jes@wildopensource.com)\n"; + + +static const struct net_device_ops rr_netdev_ops = { + .ndo_open = rr_open, + .ndo_stop = rr_close, + .ndo_siocdevprivate = rr_siocdevprivate, + .ndo_start_xmit = rr_start_xmit, + .ndo_set_mac_address = hippi_mac_addr, +}; + +/* + * 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 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); + + ret = pci_request_regions(pdev, "rrunner"); + if (ret < 0) + goto out; + + pci_set_drvdata(pdev, dev); + + rrpriv->pci_dev = pdev; + + spin_lock_init(&rrpriv->lock); + + dev->netdev_ops = &rr_netdev_ops; + + /* 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%llx, irq %i, PCI latency %i\n", dev->name, + (unsigned long long)pci_resource_start(pdev, 0), + pdev->irq, pci_latency); + + /* + * Remap the MMIO regs into kernel space. + */ + rrpriv->regs = pci_iomap(pdev, 0, 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 = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE, &ring_dma, + GFP_KERNEL); + rrpriv->tx_ring = tmpptr; + rrpriv->tx_ring_dma = ring_dma; + + if (!tmpptr) { + ret = -ENOMEM; + goto out; + } + + tmpptr = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE, &ring_dma, + GFP_KERNEL); + rrpriv->rx_ring = tmpptr; + rrpriv->rx_ring_dma = ring_dma; + + if (!tmpptr) { + ret = -ENOMEM; + goto out; + } + + tmpptr = dma_alloc_coherent(&pdev->dev, EVT_RING_SIZE, &ring_dma, + GFP_KERNEL); + 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); + + ret = register_netdev(dev); + if (ret) + goto out; + return 0; + + out: + if (rrpriv->evt_ring) + dma_free_coherent(&pdev->dev, EVT_RING_SIZE, rrpriv->evt_ring, + rrpriv->evt_ring_dma); + if (rrpriv->rx_ring) + dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, rrpriv->rx_ring, + rrpriv->rx_ring_dma); + if (rrpriv->tx_ring) + dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, rrpriv->tx_ring, + rrpriv->tx_ring_dma); + if (rrpriv->regs) + pci_iounmap(pdev, rrpriv->regs); + if (pdev) + pci_release_regions(pdev); + pci_disable_device(pdev); + out2: + free_netdev(dev); + out3: + return ret; +} + +static void rr_remove_one(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + 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); + } + + unregister_netdev(dev); + dma_free_coherent(&pdev->dev, EVT_RING_SIZE, rr->evt_ring, + rr->evt_ring_dma); + dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, rr->rx_ring, + rr->rx_ring_dma); + dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, rr->tx_ring, + rr->tx_ring_dma); + pci_iounmap(pdev, rr->regs); + pci_release_regions(pdev); + pci_disable_device(pdev); + free_netdev(dev); +} + + +/* + * 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 rr_init(struct net_device *dev) +{ + u8 addr[HIPPI_ALEN] __aligned(4); + struct rr_private *rrpriv; + struct rr_regs __iomem *regs; + u32 sram_size, rev; + + 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 *)(addr) = + htons(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA))); + *(__be32 *)(addr+2) = + htonl(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA[4]))); + dev_addr_set(dev, addr); + + printk(" MAC: %pM\n", 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 = dma_map_single(&rrpriv->pci_dev->dev, skb->data, + dev->mtu + HIPPI_HLEN, DMA_FROM_DEVICE); + /* + * 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) { + dma_unmap_single(&rrpriv->pci_dev->dev, + rrpriv->rx_ring[i].addr.addrlo, + dev->mtu + HIPPI_HLEN, + DMA_FROM_DEVICE); + 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: Framing 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 { + dma_sync_single_for_cpu(&rrpriv->pci_dev->dev, + desc->addr.addrlo, + pkt_len, + DMA_FROM_DEVICE); + + skb_put_data(skb, rx_skb->data, + pkt_len); + + dma_sync_single_for_device(&rrpriv->pci_dev->dev, + desc->addr.addrlo, + pkt_len, + DMA_FROM_DEVICE); + } + }else{ + struct sk_buff *newskb; + + newskb = alloc_skb(dev->mtu + HIPPI_HLEN, + GFP_ATOMIC); + if (newskb){ + dma_addr_t addr; + + dma_unmap_single(&rrpriv->pci_dev->dev, + desc->addr.addrlo, + dev->mtu + HIPPI_HLEN, + DMA_FROM_DEVICE); + skb = rx_skb; + skb_put(skb, pkt_len); + rrpriv->rx_skbuff[index] = newskb; + addr = dma_map_single(&rrpriv->pci_dev->dev, + newskb->data, + dev->mtu + HIPPI_HLEN, + DMA_FROM_DEVICE); + 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->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; + + dma_unmap_single(&rrpriv->pci_dev->dev, + desc->addr.addrlo, skb->len, + DMA_TO_DEVICE); + 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]); + + dma_unmap_single(&rrpriv->pci_dev->dev, + desc->addr.addrlo, skb->len, + DMA_TO_DEVICE); + 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]); + + dma_unmap_single(&rrpriv->pci_dev->dev, + desc->addr.addrlo, + dev->mtu + HIPPI_HLEN, + DMA_FROM_DEVICE); + desc->size = 0; + set_rraddr(&desc->addr, 0); + dev_kfree_skb(skb); + rrpriv->rx_skbuff[i] = NULL; + } + } +} + +static void rr_timer(struct timer_list *t) +{ + struct rr_private *rrpriv = from_timer(rrpriv, t, timer); + struct net_device *dev = pci_get_drvdata(rrpriv->pci_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 = dma_alloc_coherent(&pdev->dev, + 256 * sizeof(struct ring_ctrl), + &dma_addr, GFP_KERNEL); + if (!rrpriv->rx_ctrl) { + ecode = -ENOMEM; + goto error; + } + rrpriv->rx_ctrl_dma = dma_addr; + + rrpriv->info = dma_alloc_coherent(&pdev->dev, sizeof(struct rr_info), + &dma_addr, GFP_KERNEL); + if (!rrpriv->info) { + ecode = -ENOMEM; + goto error; + } + rrpriv->info_dma = dma_addr; + 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(pdev->irq, rr_interrupt, IRQF_SHARED, dev->name, dev)) { + printk(KERN_WARNING "%s: Requested IRQ %d is busy\n", + dev->name, pdev->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. */ + timer_setup(&rrpriv->timer, rr_timer, 0); + rrpriv->timer.expires = RUN_AT(5*HZ); /* 5 sec. watchdog */ + 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) { + dma_free_coherent(&pdev->dev, sizeof(struct rr_info), + rrpriv->info, rrpriv->info_dma); + rrpriv->info = NULL; + } + if (rrpriv->rx_ctrl) { + dma_free_coherent(&pdev->dev, 256 * 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) % TX_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 %p, truesize 0x%x\n", + rrpriv->tx_ring[cons].mode, + rrpriv->tx_ring[cons].size, + (unsigned long long) rrpriv->tx_ring[cons].addr.addrlo, + 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 = netdev_priv(dev); + struct rr_regs __iomem *regs = rrpriv->regs; + struct pci_dev *pdev = rrpriv->pci_dev; + unsigned long flags; + u32 tmp; + short i; + + netif_stop_queue(dev); + + + /* + * 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; + + spin_unlock_irqrestore(&rrpriv->lock, flags); + del_timer_sync(&rrpriv->timer); + spin_lock_irqsave(&rrpriv->lock, flags); + + 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); + + dma_free_coherent(&pdev->dev, 256 * sizeof(struct ring_ctrl), + rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma); + rrpriv->rx_ctrl = NULL; + + dma_free_coherent(&pdev->dev, sizeof(struct rr_info), rrpriv->info, + rrpriv->info_dma); + rrpriv->info = NULL; + + spin_unlock_irqrestore(&rrpriv->lock, flags); + free_irq(pdev->irq, dev); + + return 0; +} + + +static netdev_tx_t 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 NETDEV_TX_OK; + } + 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 = 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, + dma_map_single(&rrpriv->pci_dev->dev, skb->data, len + 8, DMA_TO_DEVICE)); + 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); + + return NETDEV_TX_OK; +} + + +/* + * 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_siocdevprivate(struct net_device *dev, struct ifreq *rq, + void __user *data, 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_array(EEPROM_WORDS, sizeof(u32), GFP_KERNEL); + if (!image) + 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(data, image, EEPROM_BYTES); + if (error) + error = -EFAULT; + gf_out: + kfree(image); + return error; + + case SIOCRRPFW: + if (!capable(CAP_SYS_RAWIO)){ + return -EPERM; + } + + image = memdup_user(data, EEPROM_BYTES); + if (IS_ERR(image)) + return PTR_ERR(image); + + oldimage = kmalloc(EEPROM_BYTES, GFP_KERNEL); + if (!oldimage) { + kfree(image); + return -ENOMEM; + } + + 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 *)data); + default: + return error; + } +} + +static const 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 = rr_remove_one, +}; + +module_pci_driver(rr_driver); |