| /* de2104x.c: A Linux PCI Ethernet driver for Intel/Digital 21040/1 chips. */ |
| /* |
| Copyright 2001,2003 Jeff Garzik <jgarzik@pobox.com> |
| |
| Copyright 1994, 1995 Digital Equipment Corporation. [de4x5.c] |
| Written/copyright 1994-2001 by Donald Becker. [tulip.c] |
| |
| This software may be used and distributed according to the terms of |
| the GNU General Public License (GPL), incorporated herein by reference. |
| Drivers based on or derived from this code fall under the GPL and must |
| retain the authorship, copyright and license notice. This file is not |
| a complete program and may only be used when the entire operating |
| system is licensed under the GPL. |
| |
| See the file COPYING in this distribution for more information. |
| |
| TODO, in rough priority order: |
| * Support forcing media type with a module parameter, |
| like dl2k.c/sundance.c |
| * Constants (module parms?) for Rx work limit |
| * Complete reset on PciErr |
| * Jumbo frames / dev->change_mtu |
| * Adjust Rx FIFO threshold and Max Rx DMA burst on Rx FIFO error |
| * Adjust Tx FIFO threshold and Max Tx DMA burst on Tx FIFO error |
| * Implement Tx software interrupt mitigation via |
| Tx descriptor bit |
| |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #define DRV_NAME "de2104x" |
| #define DRV_VERSION "0.7" |
| #define DRV_RELDATE "Mar 17, 2004" |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/delay.h> |
| #include <linux/ethtool.h> |
| #include <linux/compiler.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/crc32.h> |
| #include <linux/slab.h> |
| |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/uaccess.h> |
| #include <asm/unaligned.h> |
| |
| /* These identify the driver base version and may not be removed. */ |
| static char version[] = |
| KERN_INFO DRV_NAME " PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
| |
| MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>"); |
| MODULE_DESCRIPTION("Intel/Digital 21040/1 series PCI Ethernet driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(DRV_VERSION); |
| |
| static int debug = -1; |
| module_param (debug, int, 0); |
| MODULE_PARM_DESC (debug, "de2104x bitmapped message enable number"); |
| |
| /* Set the copy breakpoint for the copy-only-tiny-buffer Rx structure. */ |
| #if defined(__alpha__) || defined(__arm__) || defined(__hppa__) || \ |
| defined(CONFIG_SPARC) || defined(__ia64__) || \ |
| defined(__sh__) || defined(__mips__) |
| static int rx_copybreak = 1518; |
| #else |
| static int rx_copybreak = 100; |
| #endif |
| module_param (rx_copybreak, int, 0); |
| MODULE_PARM_DESC (rx_copybreak, "de2104x Breakpoint at which Rx packets are copied"); |
| |
| #define DE_DEF_MSG_ENABLE (NETIF_MSG_DRV | \ |
| NETIF_MSG_PROBE | \ |
| NETIF_MSG_LINK | \ |
| NETIF_MSG_IFDOWN | \ |
| NETIF_MSG_IFUP | \ |
| NETIF_MSG_RX_ERR | \ |
| NETIF_MSG_TX_ERR) |
| |
| /* Descriptor skip length in 32 bit longwords. */ |
| #ifndef CONFIG_DE2104X_DSL |
| #define DSL 0 |
| #else |
| #define DSL CONFIG_DE2104X_DSL |
| #endif |
| |
| #define DE_RX_RING_SIZE 64 |
| #define DE_TX_RING_SIZE 64 |
| #define DE_RING_BYTES \ |
| ((sizeof(struct de_desc) * DE_RX_RING_SIZE) + \ |
| (sizeof(struct de_desc) * DE_TX_RING_SIZE)) |
| #define NEXT_TX(N) (((N) + 1) & (DE_TX_RING_SIZE - 1)) |
| #define NEXT_RX(N) (((N) + 1) & (DE_RX_RING_SIZE - 1)) |
| #define TX_BUFFS_AVAIL(CP) \ |
| (((CP)->tx_tail <= (CP)->tx_head) ? \ |
| (CP)->tx_tail + (DE_TX_RING_SIZE - 1) - (CP)->tx_head : \ |
| (CP)->tx_tail - (CP)->tx_head - 1) |
| |
| #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ |
| #define RX_OFFSET 2 |
| |
| #define DE_SETUP_SKB ((struct sk_buff *) 1) |
| #define DE_DUMMY_SKB ((struct sk_buff *) 2) |
| #define DE_SETUP_FRAME_WORDS 96 |
| #define DE_EEPROM_WORDS 256 |
| #define DE_EEPROM_SIZE (DE_EEPROM_WORDS * sizeof(u16)) |
| #define DE_MAX_MEDIA 5 |
| |
| #define DE_MEDIA_TP_AUTO 0 |
| #define DE_MEDIA_BNC 1 |
| #define DE_MEDIA_AUI 2 |
| #define DE_MEDIA_TP 3 |
| #define DE_MEDIA_TP_FD 4 |
| #define DE_MEDIA_INVALID DE_MAX_MEDIA |
| #define DE_MEDIA_FIRST 0 |
| #define DE_MEDIA_LAST (DE_MAX_MEDIA - 1) |
| #define DE_AUI_BNC (SUPPORTED_AUI | SUPPORTED_BNC) |
| |
| #define DE_TIMER_LINK (60 * HZ) |
| #define DE_TIMER_NO_LINK (5 * HZ) |
| |
| #define DE_NUM_REGS 16 |
| #define DE_REGS_SIZE (DE_NUM_REGS * sizeof(u32)) |
| #define DE_REGS_VER 1 |
| |
| /* Time in jiffies before concluding the transmitter is hung. */ |
| #define TX_TIMEOUT (6*HZ) |
| |
| /* This is a mysterious value that can be written to CSR11 in the 21040 (only) |
| to support a pre-NWay full-duplex signaling mechanism using short frames. |
| No one knows what it should be, but if left at its default value some |
| 10base2(!) packets trigger a full-duplex-request interrupt. */ |
| #define FULL_DUPLEX_MAGIC 0x6969 |
| |
| enum { |
| /* NIC registers */ |
| BusMode = 0x00, |
| TxPoll = 0x08, |
| RxPoll = 0x10, |
| RxRingAddr = 0x18, |
| TxRingAddr = 0x20, |
| MacStatus = 0x28, |
| MacMode = 0x30, |
| IntrMask = 0x38, |
| RxMissed = 0x40, |
| ROMCmd = 0x48, |
| CSR11 = 0x58, |
| SIAStatus = 0x60, |
| CSR13 = 0x68, |
| CSR14 = 0x70, |
| CSR15 = 0x78, |
| PCIPM = 0x40, |
| |
| /* BusMode bits */ |
| CmdReset = (1 << 0), |
| CacheAlign16 = 0x00008000, |
| BurstLen4 = 0x00000400, |
| DescSkipLen = (DSL << 2), |
| |
| /* Rx/TxPoll bits */ |
| NormalTxPoll = (1 << 0), |
| NormalRxPoll = (1 << 0), |
| |
| /* Tx/Rx descriptor status bits */ |
| DescOwn = (1 << 31), |
| RxError = (1 << 15), |
| RxErrLong = (1 << 7), |
| RxErrCRC = (1 << 1), |
| RxErrFIFO = (1 << 0), |
| RxErrRunt = (1 << 11), |
| RxErrFrame = (1 << 14), |
| RingEnd = (1 << 25), |
| FirstFrag = (1 << 29), |
| LastFrag = (1 << 30), |
| TxError = (1 << 15), |
| TxFIFOUnder = (1 << 1), |
| TxLinkFail = (1 << 2) | (1 << 10) | (1 << 11), |
| TxMaxCol = (1 << 8), |
| TxOWC = (1 << 9), |
| TxJabber = (1 << 14), |
| SetupFrame = (1 << 27), |
| TxSwInt = (1 << 31), |
| |
| /* MacStatus bits */ |
| IntrOK = (1 << 16), |
| IntrErr = (1 << 15), |
| RxIntr = (1 << 6), |
| RxEmpty = (1 << 7), |
| TxIntr = (1 << 0), |
| TxEmpty = (1 << 2), |
| PciErr = (1 << 13), |
| TxState = (1 << 22) | (1 << 21) | (1 << 20), |
| RxState = (1 << 19) | (1 << 18) | (1 << 17), |
| LinkFail = (1 << 12), |
| LinkPass = (1 << 4), |
| RxStopped = (1 << 8), |
| TxStopped = (1 << 1), |
| |
| /* MacMode bits */ |
| TxEnable = (1 << 13), |
| RxEnable = (1 << 1), |
| RxTx = TxEnable | RxEnable, |
| FullDuplex = (1 << 9), |
| AcceptAllMulticast = (1 << 7), |
| AcceptAllPhys = (1 << 6), |
| BOCnt = (1 << 5), |
| MacModeClear = (1<<12) | (1<<11) | (1<<10) | (1<<8) | (1<<3) | |
| RxTx | BOCnt | AcceptAllPhys | AcceptAllMulticast, |
| |
| /* ROMCmd bits */ |
| EE_SHIFT_CLK = 0x02, /* EEPROM shift clock. */ |
| EE_CS = 0x01, /* EEPROM chip select. */ |
| EE_DATA_WRITE = 0x04, /* Data from the Tulip to EEPROM. */ |
| EE_WRITE_0 = 0x01, |
| EE_WRITE_1 = 0x05, |
| EE_DATA_READ = 0x08, /* Data from the EEPROM chip. */ |
| EE_ENB = (0x4800 | EE_CS), |
| |
| /* The EEPROM commands include the alway-set leading bit. */ |
| EE_READ_CMD = 6, |
| |
| /* RxMissed bits */ |
| RxMissedOver = (1 << 16), |
| RxMissedMask = 0xffff, |
| |
| /* SROM-related bits */ |
| SROMC0InfoLeaf = 27, |
| MediaBlockMask = 0x3f, |
| MediaCustomCSRs = (1 << 6), |
| |
| /* PCIPM bits */ |
| PM_Sleep = (1 << 31), |
| PM_Snooze = (1 << 30), |
| PM_Mask = PM_Sleep | PM_Snooze, |
| |
| /* SIAStatus bits */ |
| NWayState = (1 << 14) | (1 << 13) | (1 << 12), |
| NWayRestart = (1 << 12), |
| NonselPortActive = (1 << 9), |
| SelPortActive = (1 << 8), |
| LinkFailStatus = (1 << 2), |
| NetCxnErr = (1 << 1), |
| }; |
| |
| static const u32 de_intr_mask = |
| IntrOK | IntrErr | RxIntr | RxEmpty | TxIntr | TxEmpty | |
| LinkPass | LinkFail | PciErr; |
| |
| /* |
| * Set the programmable burst length to 4 longwords for all: |
| * DMA errors result without these values. Cache align 16 long. |
| */ |
| static const u32 de_bus_mode = CacheAlign16 | BurstLen4 | DescSkipLen; |
| |
| struct de_srom_media_block { |
| u8 opts; |
| u16 csr13; |
| u16 csr14; |
| u16 csr15; |
| } __packed; |
| |
| struct de_srom_info_leaf { |
| u16 default_media; |
| u8 n_blocks; |
| u8 unused; |
| } __packed; |
| |
| struct de_desc { |
| __le32 opts1; |
| __le32 opts2; |
| __le32 addr1; |
| __le32 addr2; |
| #if DSL |
| __le32 skip[DSL]; |
| #endif |
| }; |
| |
| struct media_info { |
| u16 type; /* DE_MEDIA_xxx */ |
| u16 csr13; |
| u16 csr14; |
| u16 csr15; |
| }; |
| |
| struct ring_info { |
| struct sk_buff *skb; |
| dma_addr_t mapping; |
| }; |
| |
| struct de_private { |
| unsigned tx_head; |
| unsigned tx_tail; |
| unsigned rx_tail; |
| |
| void __iomem *regs; |
| struct net_device *dev; |
| spinlock_t lock; |
| |
| struct de_desc *rx_ring; |
| struct de_desc *tx_ring; |
| struct ring_info tx_skb[DE_TX_RING_SIZE]; |
| struct ring_info rx_skb[DE_RX_RING_SIZE]; |
| unsigned rx_buf_sz; |
| dma_addr_t ring_dma; |
| |
| u32 msg_enable; |
| |
| struct net_device_stats net_stats; |
| |
| struct pci_dev *pdev; |
| |
| u16 setup_frame[DE_SETUP_FRAME_WORDS]; |
| |
| u32 media_type; |
| u32 media_supported; |
| u32 media_advertise; |
| struct media_info media[DE_MAX_MEDIA]; |
| struct timer_list media_timer; |
| |
| u8 *ee_data; |
| unsigned board_idx; |
| unsigned de21040 : 1; |
| unsigned media_lock : 1; |
| }; |
| |
| |
| static void de_set_rx_mode (struct net_device *dev); |
| static void de_tx (struct de_private *de); |
| static void de_clean_rings (struct de_private *de); |
| static void de_media_interrupt (struct de_private *de, u32 status); |
| static void de21040_media_timer (unsigned long data); |
| static void de21041_media_timer (unsigned long data); |
| static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media); |
| |
| |
| static DEFINE_PCI_DEVICE_TABLE(de_pci_tbl) = { |
| { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_PLUS, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(pci, de_pci_tbl); |
| |
| static const char * const media_name[DE_MAX_MEDIA] = { |
| "10baseT auto", |
| "BNC", |
| "AUI", |
| "10baseT-HD", |
| "10baseT-FD" |
| }; |
| |
| /* 21040 transceiver register settings: |
| * TP AUTO(unused), BNC(unused), AUI, TP, TP FD*/ |
| static u16 t21040_csr13[] = { 0, 0, 0x8F09, 0x8F01, 0x8F01, }; |
| static u16 t21040_csr14[] = { 0, 0, 0x0705, 0xFFFF, 0xFFFD, }; |
| static u16 t21040_csr15[] = { 0, 0, 0x0006, 0x0000, 0x0000, }; |
| |
| /* 21041 transceiver register settings: TP AUTO, BNC, AUI, TP, TP FD*/ |
| static u16 t21041_csr13[] = { 0xEF01, 0xEF09, 0xEF09, 0xEF01, 0xEF09, }; |
| static u16 t21041_csr14[] = { 0xFFFF, 0xF7FD, 0xF7FD, 0x7F3F, 0x7F3D, }; |
| /* If on-chip autonegotiation is broken, use half-duplex (FF3F) instead */ |
| static u16 t21041_csr14_brk[] = { 0xFF3F, 0xF7FD, 0xF7FD, 0x7F3F, 0x7F3D, }; |
| static u16 t21041_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, }; |
| |
| |
| #define dr32(reg) ioread32(de->regs + (reg)) |
| #define dw32(reg, val) iowrite32((val), de->regs + (reg)) |
| |
| |
| static void de_rx_err_acct (struct de_private *de, unsigned rx_tail, |
| u32 status, u32 len) |
| { |
| netif_printk(de, rx_err, KERN_DEBUG, de->dev, |
| "rx err, slot %d status 0x%x len %d\n", |
| rx_tail, status, len); |
| |
| if ((status & 0x38000300) != 0x0300) { |
| /* Ingore earlier buffers. */ |
| if ((status & 0xffff) != 0x7fff) { |
| netif_warn(de, rx_err, de->dev, |
| "Oversized Ethernet frame spanned multiple buffers, status %08x!\n", |
| status); |
| de->net_stats.rx_length_errors++; |
| } |
| } else if (status & RxError) { |
| /* There was a fatal error. */ |
| de->net_stats.rx_errors++; /* end of a packet.*/ |
| if (status & 0x0890) de->net_stats.rx_length_errors++; |
| if (status & RxErrCRC) de->net_stats.rx_crc_errors++; |
| if (status & RxErrFIFO) de->net_stats.rx_fifo_errors++; |
| } |
| } |
| |
| static void de_rx (struct de_private *de) |
| { |
| unsigned rx_tail = de->rx_tail; |
| unsigned rx_work = DE_RX_RING_SIZE; |
| unsigned drop = 0; |
| int rc; |
| |
| while (--rx_work) { |
| u32 status, len; |
| dma_addr_t mapping; |
| struct sk_buff *skb, *copy_skb; |
| unsigned copying_skb, buflen; |
| |
| skb = de->rx_skb[rx_tail].skb; |
| BUG_ON(!skb); |
| rmb(); |
| status = le32_to_cpu(de->rx_ring[rx_tail].opts1); |
| if (status & DescOwn) |
| break; |
| |
| len = ((status >> 16) & 0x7ff) - 4; |
| mapping = de->rx_skb[rx_tail].mapping; |
| |
| if (unlikely(drop)) { |
| de->net_stats.rx_dropped++; |
| goto rx_next; |
| } |
| |
| if (unlikely((status & 0x38008300) != 0x0300)) { |
| de_rx_err_acct(de, rx_tail, status, len); |
| goto rx_next; |
| } |
| |
| copying_skb = (len <= rx_copybreak); |
| |
| if (unlikely(netif_msg_rx_status(de))) |
| printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %d copying? %d\n", |
| de->dev->name, rx_tail, status, len, |
| copying_skb); |
| |
| buflen = copying_skb ? (len + RX_OFFSET) : de->rx_buf_sz; |
| copy_skb = dev_alloc_skb (buflen); |
| if (unlikely(!copy_skb)) { |
| de->net_stats.rx_dropped++; |
| drop = 1; |
| rx_work = 100; |
| goto rx_next; |
| } |
| |
| if (!copying_skb) { |
| pci_unmap_single(de->pdev, mapping, |
| buflen, PCI_DMA_FROMDEVICE); |
| skb_put(skb, len); |
| |
| mapping = |
| de->rx_skb[rx_tail].mapping = |
| pci_map_single(de->pdev, copy_skb->data, |
| buflen, PCI_DMA_FROMDEVICE); |
| de->rx_skb[rx_tail].skb = copy_skb; |
| } else { |
| pci_dma_sync_single_for_cpu(de->pdev, mapping, len, PCI_DMA_FROMDEVICE); |
| skb_reserve(copy_skb, RX_OFFSET); |
| skb_copy_from_linear_data(skb, skb_put(copy_skb, len), |
| len); |
| pci_dma_sync_single_for_device(de->pdev, mapping, len, PCI_DMA_FROMDEVICE); |
| |
| /* We'll reuse the original ring buffer. */ |
| skb = copy_skb; |
| } |
| |
| skb->protocol = eth_type_trans (skb, de->dev); |
| |
| de->net_stats.rx_packets++; |
| de->net_stats.rx_bytes += skb->len; |
| rc = netif_rx (skb); |
| if (rc == NET_RX_DROP) |
| drop = 1; |
| |
| rx_next: |
| if (rx_tail == (DE_RX_RING_SIZE - 1)) |
| de->rx_ring[rx_tail].opts2 = |
| cpu_to_le32(RingEnd | de->rx_buf_sz); |
| else |
| de->rx_ring[rx_tail].opts2 = cpu_to_le32(de->rx_buf_sz); |
| de->rx_ring[rx_tail].addr1 = cpu_to_le32(mapping); |
| wmb(); |
| de->rx_ring[rx_tail].opts1 = cpu_to_le32(DescOwn); |
| rx_tail = NEXT_RX(rx_tail); |
| } |
| |
| if (!rx_work) |
| netdev_warn(de->dev, "rx work limit reached\n"); |
| |
| de->rx_tail = rx_tail; |
| } |
| |
| static irqreturn_t de_interrupt (int irq, void *dev_instance) |
| { |
| struct net_device *dev = dev_instance; |
| struct de_private *de = netdev_priv(dev); |
| u32 status; |
| |
| status = dr32(MacStatus); |
| if ((!(status & (IntrOK|IntrErr))) || (status == 0xFFFF)) |
| return IRQ_NONE; |
| |
| if (netif_msg_intr(de)) |
| printk(KERN_DEBUG "%s: intr, status %08x mode %08x desc %u/%u/%u\n", |
| dev->name, status, dr32(MacMode), |
| de->rx_tail, de->tx_head, de->tx_tail); |
| |
| dw32(MacStatus, status); |
| |
| if (status & (RxIntr | RxEmpty)) { |
| de_rx(de); |
| if (status & RxEmpty) |
| dw32(RxPoll, NormalRxPoll); |
| } |
| |
| spin_lock(&de->lock); |
| |
| if (status & (TxIntr | TxEmpty)) |
| de_tx(de); |
| |
| if (status & (LinkPass | LinkFail)) |
| de_media_interrupt(de, status); |
| |
| spin_unlock(&de->lock); |
| |
| if (status & PciErr) { |
| u16 pci_status; |
| |
| pci_read_config_word(de->pdev, PCI_STATUS, &pci_status); |
| pci_write_config_word(de->pdev, PCI_STATUS, pci_status); |
| netdev_err(de->dev, |
| "PCI bus error, status=%08x, PCI status=%04x\n", |
| status, pci_status); |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void de_tx (struct de_private *de) |
| { |
| unsigned tx_head = de->tx_head; |
| unsigned tx_tail = de->tx_tail; |
| |
| while (tx_tail != tx_head) { |
| struct sk_buff *skb; |
| u32 status; |
| |
| rmb(); |
| status = le32_to_cpu(de->tx_ring[tx_tail].opts1); |
| if (status & DescOwn) |
| break; |
| |
| skb = de->tx_skb[tx_tail].skb; |
| BUG_ON(!skb); |
| if (unlikely(skb == DE_DUMMY_SKB)) |
| goto next; |
| |
| if (unlikely(skb == DE_SETUP_SKB)) { |
| pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping, |
| sizeof(de->setup_frame), PCI_DMA_TODEVICE); |
| goto next; |
| } |
| |
| pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping, |
| skb->len, PCI_DMA_TODEVICE); |
| |
| if (status & LastFrag) { |
| if (status & TxError) { |
| if (netif_msg_tx_err(de)) |
| printk(KERN_DEBUG "%s: tx err, status 0x%x\n", |
| de->dev->name, status); |
| de->net_stats.tx_errors++; |
| if (status & TxOWC) |
| de->net_stats.tx_window_errors++; |
| if (status & TxMaxCol) |
| de->net_stats.tx_aborted_errors++; |
| if (status & TxLinkFail) |
| de->net_stats.tx_carrier_errors++; |
| if (status & TxFIFOUnder) |
| de->net_stats.tx_fifo_errors++; |
| } else { |
| de->net_stats.tx_packets++; |
| de->net_stats.tx_bytes += skb->len; |
| if (netif_msg_tx_done(de)) |
| printk(KERN_DEBUG "%s: tx done, slot %d\n", |
| de->dev->name, tx_tail); |
| } |
| dev_kfree_skb_irq(skb); |
| } |
| |
| next: |
| de->tx_skb[tx_tail].skb = NULL; |
| |
| tx_tail = NEXT_TX(tx_tail); |
| } |
| |
| de->tx_tail = tx_tail; |
| |
| if (netif_queue_stopped(de->dev) && (TX_BUFFS_AVAIL(de) > (DE_TX_RING_SIZE / 4))) |
| netif_wake_queue(de->dev); |
| } |
| |
| static netdev_tx_t de_start_xmit (struct sk_buff *skb, |
| struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| unsigned int entry, tx_free; |
| u32 mapping, len, flags = FirstFrag | LastFrag; |
| struct de_desc *txd; |
| |
| spin_lock_irq(&de->lock); |
| |
| tx_free = TX_BUFFS_AVAIL(de); |
| if (tx_free == 0) { |
| netif_stop_queue(dev); |
| spin_unlock_irq(&de->lock); |
| return NETDEV_TX_BUSY; |
| } |
| tx_free--; |
| |
| entry = de->tx_head; |
| |
| txd = &de->tx_ring[entry]; |
| |
| len = skb->len; |
| mapping = pci_map_single(de->pdev, skb->data, len, PCI_DMA_TODEVICE); |
| if (entry == (DE_TX_RING_SIZE - 1)) |
| flags |= RingEnd; |
| if (!tx_free || (tx_free == (DE_TX_RING_SIZE / 2))) |
| flags |= TxSwInt; |
| flags |= len; |
| txd->opts2 = cpu_to_le32(flags); |
| txd->addr1 = cpu_to_le32(mapping); |
| |
| de->tx_skb[entry].skb = skb; |
| de->tx_skb[entry].mapping = mapping; |
| wmb(); |
| |
| txd->opts1 = cpu_to_le32(DescOwn); |
| wmb(); |
| |
| de->tx_head = NEXT_TX(entry); |
| if (netif_msg_tx_queued(de)) |
| printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n", |
| dev->name, entry, skb->len); |
| |
| if (tx_free == 0) |
| netif_stop_queue(dev); |
| |
| spin_unlock_irq(&de->lock); |
| |
| /* Trigger an immediate transmit demand. */ |
| dw32(TxPoll, NormalTxPoll); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| /* Set or clear the multicast filter for this adaptor. |
| Note that we only use exclusion around actually queueing the |
| new frame, not around filling de->setup_frame. This is non-deterministic |
| when re-entered but still correct. */ |
| |
| #undef set_bit_le |
| #define set_bit_le(i,p) do { ((char *)(p))[(i)/8] |= (1<<((i)%8)); } while(0) |
| |
| static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| u16 hash_table[32]; |
| struct netdev_hw_addr *ha; |
| int i; |
| u16 *eaddrs; |
| |
| memset(hash_table, 0, sizeof(hash_table)); |
| set_bit_le(255, hash_table); /* Broadcast entry */ |
| /* This should work on big-endian machines as well. */ |
| netdev_for_each_mc_addr(ha, dev) { |
| int index = ether_crc_le(ETH_ALEN, ha->addr) & 0x1ff; |
| |
| set_bit_le(index, hash_table); |
| } |
| |
| for (i = 0; i < 32; i++) { |
| *setup_frm++ = hash_table[i]; |
| *setup_frm++ = hash_table[i]; |
| } |
| setup_frm = &de->setup_frame[13*6]; |
| |
| /* Fill the final entry with our physical address. */ |
| eaddrs = (u16 *)dev->dev_addr; |
| *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0]; |
| *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1]; |
| *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2]; |
| } |
| |
| static void build_setup_frame_perfect(u16 *setup_frm, struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| struct netdev_hw_addr *ha; |
| u16 *eaddrs; |
| |
| /* We have <= 14 addresses so we can use the wonderful |
| 16 address perfect filtering of the Tulip. */ |
| netdev_for_each_mc_addr(ha, dev) { |
| eaddrs = (u16 *) ha->addr; |
| *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++; |
| *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++; |
| *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++; |
| } |
| /* Fill the unused entries with the broadcast address. */ |
| memset(setup_frm, 0xff, (15 - netdev_mc_count(dev)) * 12); |
| setup_frm = &de->setup_frame[15*6]; |
| |
| /* Fill the final entry with our physical address. */ |
| eaddrs = (u16 *)dev->dev_addr; |
| *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0]; |
| *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1]; |
| *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2]; |
| } |
| |
| |
| static void __de_set_rx_mode (struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| u32 macmode; |
| unsigned int entry; |
| u32 mapping; |
| struct de_desc *txd; |
| struct de_desc *dummy_txd = NULL; |
| |
| macmode = dr32(MacMode) & ~(AcceptAllMulticast | AcceptAllPhys); |
| |
| if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ |
| macmode |= AcceptAllMulticast | AcceptAllPhys; |
| goto out; |
| } |
| |
| if ((netdev_mc_count(dev) > 1000) || (dev->flags & IFF_ALLMULTI)) { |
| /* Too many to filter well -- accept all multicasts. */ |
| macmode |= AcceptAllMulticast; |
| goto out; |
| } |
| |
| /* Note that only the low-address shortword of setup_frame is valid! |
| The values are doubled for big-endian architectures. */ |
| if (netdev_mc_count(dev) > 14) /* Must use a multicast hash table. */ |
| build_setup_frame_hash (de->setup_frame, dev); |
| else |
| build_setup_frame_perfect (de->setup_frame, dev); |
| |
| /* |
| * Now add this frame to the Tx list. |
| */ |
| |
| entry = de->tx_head; |
| |
| /* Avoid a chip errata by prefixing a dummy entry. */ |
| if (entry != 0) { |
| de->tx_skb[entry].skb = DE_DUMMY_SKB; |
| |
| dummy_txd = &de->tx_ring[entry]; |
| dummy_txd->opts2 = (entry == (DE_TX_RING_SIZE - 1)) ? |
| cpu_to_le32(RingEnd) : 0; |
| dummy_txd->addr1 = 0; |
| |
| /* Must set DescOwned later to avoid race with chip */ |
| |
| entry = NEXT_TX(entry); |
| } |
| |
| de->tx_skb[entry].skb = DE_SETUP_SKB; |
| de->tx_skb[entry].mapping = mapping = |
| pci_map_single (de->pdev, de->setup_frame, |
| sizeof (de->setup_frame), PCI_DMA_TODEVICE); |
| |
| /* Put the setup frame on the Tx list. */ |
| txd = &de->tx_ring[entry]; |
| if (entry == (DE_TX_RING_SIZE - 1)) |
| txd->opts2 = cpu_to_le32(SetupFrame | RingEnd | sizeof (de->setup_frame)); |
| else |
| txd->opts2 = cpu_to_le32(SetupFrame | sizeof (de->setup_frame)); |
| txd->addr1 = cpu_to_le32(mapping); |
| wmb(); |
| |
| txd->opts1 = cpu_to_le32(DescOwn); |
| wmb(); |
| |
| if (dummy_txd) { |
| dummy_txd->opts1 = cpu_to_le32(DescOwn); |
| wmb(); |
| } |
| |
| de->tx_head = NEXT_TX(entry); |
| |
| if (TX_BUFFS_AVAIL(de) == 0) |
| netif_stop_queue(dev); |
| |
| /* Trigger an immediate transmit demand. */ |
| dw32(TxPoll, NormalTxPoll); |
| |
| out: |
| if (macmode != dr32(MacMode)) |
| dw32(MacMode, macmode); |
| } |
| |
| static void de_set_rx_mode (struct net_device *dev) |
| { |
| unsigned long flags; |
| struct de_private *de = netdev_priv(dev); |
| |
| spin_lock_irqsave (&de->lock, flags); |
| __de_set_rx_mode(dev); |
| spin_unlock_irqrestore (&de->lock, flags); |
| } |
| |
| static inline void de_rx_missed(struct de_private *de, u32 rx_missed) |
| { |
| if (unlikely(rx_missed & RxMissedOver)) |
| de->net_stats.rx_missed_errors += RxMissedMask; |
| else |
| de->net_stats.rx_missed_errors += (rx_missed & RxMissedMask); |
| } |
| |
| static void __de_get_stats(struct de_private *de) |
| { |
| u32 tmp = dr32(RxMissed); /* self-clearing */ |
| |
| de_rx_missed(de, tmp); |
| } |
| |
| static struct net_device_stats *de_get_stats(struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| |
| /* The chip only need report frame silently dropped. */ |
| spin_lock_irq(&de->lock); |
| if (netif_running(dev) && netif_device_present(dev)) |
| __de_get_stats(de); |
| spin_unlock_irq(&de->lock); |
| |
| return &de->net_stats; |
| } |
| |
| static inline int de_is_running (struct de_private *de) |
| { |
| return (dr32(MacStatus) & (RxState | TxState)) ? 1 : 0; |
| } |
| |
| static void de_stop_rxtx (struct de_private *de) |
| { |
| u32 macmode; |
| unsigned int i = 1300/100; |
| |
| macmode = dr32(MacMode); |
| if (macmode & RxTx) { |
| dw32(MacMode, macmode & ~RxTx); |
| dr32(MacMode); |
| } |
| |
| /* wait until in-flight frame completes. |
| * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin) |
| * Typically expect this loop to end in < 50 us on 100BT. |
| */ |
| while (--i) { |
| if (!de_is_running(de)) |
| return; |
| udelay(100); |
| } |
| |
| netdev_warn(de->dev, "timeout expired, stopping DMA\n"); |
| } |
| |
| static inline void de_start_rxtx (struct de_private *de) |
| { |
| u32 macmode; |
| |
| macmode = dr32(MacMode); |
| if ((macmode & RxTx) != RxTx) { |
| dw32(MacMode, macmode | RxTx); |
| dr32(MacMode); |
| } |
| } |
| |
| static void de_stop_hw (struct de_private *de) |
| { |
| |
| udelay(5); |
| dw32(IntrMask, 0); |
| |
| de_stop_rxtx(de); |
| |
| dw32(MacStatus, dr32(MacStatus)); |
| |
| udelay(10); |
| |
| de->rx_tail = 0; |
| de->tx_head = de->tx_tail = 0; |
| } |
| |
| static void de_link_up(struct de_private *de) |
| { |
| if (!netif_carrier_ok(de->dev)) { |
| netif_carrier_on(de->dev); |
| netif_info(de, link, de->dev, "link up, media %s\n", |
| media_name[de->media_type]); |
| } |
| } |
| |
| static void de_link_down(struct de_private *de) |
| { |
| if (netif_carrier_ok(de->dev)) { |
| netif_carrier_off(de->dev); |
| netif_info(de, link, de->dev, "link down\n"); |
| } |
| } |
| |
| static void de_set_media (struct de_private *de) |
| { |
| unsigned media = de->media_type; |
| u32 macmode = dr32(MacMode); |
| |
| if (de_is_running(de)) |
| netdev_warn(de->dev, "chip is running while changing media!\n"); |
| |
| if (de->de21040) |
| dw32(CSR11, FULL_DUPLEX_MAGIC); |
| dw32(CSR13, 0); /* Reset phy */ |
| dw32(CSR14, de->media[media].csr14); |
| dw32(CSR15, de->media[media].csr15); |
| dw32(CSR13, de->media[media].csr13); |
| |
| /* must delay 10ms before writing to other registers, |
| * especially CSR6 |
| */ |
| mdelay(10); |
| |
| if (media == DE_MEDIA_TP_FD) |
| macmode |= FullDuplex; |
| else |
| macmode &= ~FullDuplex; |
| |
| netif_info(de, link, de->dev, "set link %s\n", media_name[media]); |
| netif_info(de, hw, de->dev, "mode 0x%x, sia 0x%x,0x%x,0x%x,0x%x\n", |
| dr32(MacMode), dr32(SIAStatus), |
| dr32(CSR13), dr32(CSR14), dr32(CSR15)); |
| netif_info(de, hw, de->dev, "set mode 0x%x, set sia 0x%x,0x%x,0x%x\n", |
| macmode, de->media[media].csr13, |
| de->media[media].csr14, de->media[media].csr15); |
| if (macmode != dr32(MacMode)) |
| dw32(MacMode, macmode); |
| } |
| |
| static void de_next_media (struct de_private *de, const u32 *media, |
| unsigned int n_media) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < n_media; i++) { |
| if (de_ok_to_advertise(de, media[i])) { |
| de->media_type = media[i]; |
| return; |
| } |
| } |
| } |
| |
| static void de21040_media_timer (unsigned long data) |
| { |
| struct de_private *de = (struct de_private *) data; |
| struct net_device *dev = de->dev; |
| u32 status = dr32(SIAStatus); |
| unsigned int carrier; |
| unsigned long flags; |
| |
| carrier = (status & NetCxnErr) ? 0 : 1; |
| |
| if (carrier) { |
| if (de->media_type != DE_MEDIA_AUI && (status & LinkFailStatus)) |
| goto no_link_yet; |
| |
| de->media_timer.expires = jiffies + DE_TIMER_LINK; |
| add_timer(&de->media_timer); |
| if (!netif_carrier_ok(dev)) |
| de_link_up(de); |
| else |
| netif_info(de, timer, dev, "%s link ok, status %x\n", |
| media_name[de->media_type], status); |
| return; |
| } |
| |
| de_link_down(de); |
| |
| if (de->media_lock) |
| return; |
| |
| if (de->media_type == DE_MEDIA_AUI) { |
| static const u32 next_state = DE_MEDIA_TP; |
| de_next_media(de, &next_state, 1); |
| } else { |
| static const u32 next_state = DE_MEDIA_AUI; |
| de_next_media(de, &next_state, 1); |
| } |
| |
| spin_lock_irqsave(&de->lock, flags); |
| de_stop_rxtx(de); |
| spin_unlock_irqrestore(&de->lock, flags); |
| de_set_media(de); |
| de_start_rxtx(de); |
| |
| no_link_yet: |
| de->media_timer.expires = jiffies + DE_TIMER_NO_LINK; |
| add_timer(&de->media_timer); |
| |
| netif_info(de, timer, dev, "no link, trying media %s, status %x\n", |
| media_name[de->media_type], status); |
| } |
| |
| static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media) |
| { |
| switch (new_media) { |
| case DE_MEDIA_TP_AUTO: |
| if (!(de->media_advertise & ADVERTISED_Autoneg)) |
| return 0; |
| if (!(de->media_advertise & (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full))) |
| return 0; |
| break; |
| case DE_MEDIA_BNC: |
| if (!(de->media_advertise & ADVERTISED_BNC)) |
| return 0; |
| break; |
| case DE_MEDIA_AUI: |
| if (!(de->media_advertise & ADVERTISED_AUI)) |
| return 0; |
| break; |
| case DE_MEDIA_TP: |
| if (!(de->media_advertise & ADVERTISED_10baseT_Half)) |
| return 0; |
| break; |
| case DE_MEDIA_TP_FD: |
| if (!(de->media_advertise & ADVERTISED_10baseT_Full)) |
| return 0; |
| break; |
| } |
| |
| return 1; |
| } |
| |
| static void de21041_media_timer (unsigned long data) |
| { |
| struct de_private *de = (struct de_private *) data; |
| struct net_device *dev = de->dev; |
| u32 status = dr32(SIAStatus); |
| unsigned int carrier; |
| unsigned long flags; |
| |
| /* clear port active bits */ |
| dw32(SIAStatus, NonselPortActive | SelPortActive); |
| |
| carrier = (status & NetCxnErr) ? 0 : 1; |
| |
| if (carrier) { |
| if ((de->media_type == DE_MEDIA_TP_AUTO || |
| de->media_type == DE_MEDIA_TP || |
| de->media_type == DE_MEDIA_TP_FD) && |
| (status & LinkFailStatus)) |
| goto no_link_yet; |
| |
| de->media_timer.expires = jiffies + DE_TIMER_LINK; |
| add_timer(&de->media_timer); |
| if (!netif_carrier_ok(dev)) |
| de_link_up(de); |
| else |
| netif_info(de, timer, dev, |
| "%s link ok, mode %x status %x\n", |
| media_name[de->media_type], |
| dr32(MacMode), status); |
| return; |
| } |
| |
| de_link_down(de); |
| |
| /* if media type locked, don't switch media */ |
| if (de->media_lock) |
| goto set_media; |
| |
| /* if activity detected, use that as hint for new media type */ |
| if (status & NonselPortActive) { |
| unsigned int have_media = 1; |
| |
| /* if AUI/BNC selected, then activity is on TP port */ |
| if (de->media_type == DE_MEDIA_AUI || |
| de->media_type == DE_MEDIA_BNC) { |
| if (de_ok_to_advertise(de, DE_MEDIA_TP_AUTO)) |
| de->media_type = DE_MEDIA_TP_AUTO; |
| else |
| have_media = 0; |
| } |
| |
| /* TP selected. If there is only TP and BNC, then it's BNC */ |
| else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_BNC) && |
| de_ok_to_advertise(de, DE_MEDIA_BNC)) |
| de->media_type = DE_MEDIA_BNC; |
| |
| /* TP selected. If there is only TP and AUI, then it's AUI */ |
| else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_AUI) && |
| de_ok_to_advertise(de, DE_MEDIA_AUI)) |
| de->media_type = DE_MEDIA_AUI; |
| |
| /* otherwise, ignore the hint */ |
| else |
| have_media = 0; |
| |
| if (have_media) |
| goto set_media; |
| } |
| |
| /* |
| * Absent or ambiguous activity hint, move to next advertised |
| * media state. If de->media_type is left unchanged, this |
| * simply resets the PHY and reloads the current media settings. |
| */ |
| if (de->media_type == DE_MEDIA_AUI) { |
| static const u32 next_states[] = { |
| DE_MEDIA_BNC, DE_MEDIA_TP_AUTO |
| }; |
| de_next_media(de, next_states, ARRAY_SIZE(next_states)); |
| } else if (de->media_type == DE_MEDIA_BNC) { |
| static const u32 next_states[] = { |
| DE_MEDIA_TP_AUTO, DE_MEDIA_AUI |
| }; |
| de_next_media(de, next_states, ARRAY_SIZE(next_states)); |
| } else { |
| static const u32 next_states[] = { |
| DE_MEDIA_AUI, DE_MEDIA_BNC, DE_MEDIA_TP_AUTO |
| }; |
| de_next_media(de, next_states, ARRAY_SIZE(next_states)); |
| } |
| |
| set_media: |
| spin_lock_irqsave(&de->lock, flags); |
| de_stop_rxtx(de); |
| spin_unlock_irqrestore(&de->lock, flags); |
| de_set_media(de); |
| de_start_rxtx(de); |
| |
| no_link_yet: |
| de->media_timer.expires = jiffies + DE_TIMER_NO_LINK; |
| add_timer(&de->media_timer); |
| |
| netif_info(de, timer, dev, "no link, trying media %s, status %x\n", |
| media_name[de->media_type], status); |
| } |
| |
| static void de_media_interrupt (struct de_private *de, u32 status) |
| { |
| if (status & LinkPass) { |
| /* Ignore if current media is AUI or BNC and we can't use TP */ |
| if ((de->media_type == DE_MEDIA_AUI || |
| de->media_type == DE_MEDIA_BNC) && |
| (de->media_lock || |
| !de_ok_to_advertise(de, DE_MEDIA_TP_AUTO))) |
| return; |
| /* If current media is not TP, change it to TP */ |
| if ((de->media_type == DE_MEDIA_AUI || |
| de->media_type == DE_MEDIA_BNC)) { |
| de->media_type = DE_MEDIA_TP_AUTO; |
| de_stop_rxtx(de); |
| de_set_media(de); |
| de_start_rxtx(de); |
| } |
| de_link_up(de); |
| mod_timer(&de->media_timer, jiffies + DE_TIMER_LINK); |
| return; |
| } |
| |
| BUG_ON(!(status & LinkFail)); |
| /* Mark the link as down only if current media is TP */ |
| if (netif_carrier_ok(de->dev) && de->media_type != DE_MEDIA_AUI && |
| de->media_type != DE_MEDIA_BNC) { |
| de_link_down(de); |
| mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK); |
| } |
| } |
| |
| static int de_reset_mac (struct de_private *de) |
| { |
| u32 status, tmp; |
| |
| /* |
| * Reset MAC. de4x5.c and tulip.c examined for "advice" |
| * in this area. |
| */ |
| |
| if (dr32(BusMode) == 0xffffffff) |
| return -EBUSY; |
| |
| /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */ |
| dw32 (BusMode, CmdReset); |
| mdelay (1); |
| |
| dw32 (BusMode, de_bus_mode); |
| mdelay (1); |
| |
| for (tmp = 0; tmp < 5; tmp++) { |
| dr32 (BusMode); |
| mdelay (1); |
| } |
| |
| mdelay (1); |
| |
| status = dr32(MacStatus); |
| if (status & (RxState | TxState)) |
| return -EBUSY; |
| if (status == 0xffffffff) |
| return -ENODEV; |
| return 0; |
| } |
| |
| static void de_adapter_wake (struct de_private *de) |
| { |
| u32 pmctl; |
| |
| if (de->de21040) |
| return; |
| |
| pci_read_config_dword(de->pdev, PCIPM, &pmctl); |
| if (pmctl & PM_Mask) { |
| pmctl &= ~PM_Mask; |
| pci_write_config_dword(de->pdev, PCIPM, pmctl); |
| |
| /* de4x5.c delays, so we do too */ |
| msleep(10); |
| } |
| } |
| |
| static void de_adapter_sleep (struct de_private *de) |
| { |
| u32 pmctl; |
| |
| if (de->de21040) |
| return; |
| |
| dw32(CSR13, 0); /* Reset phy */ |
| pci_read_config_dword(de->pdev, PCIPM, &pmctl); |
| pmctl |= PM_Sleep; |
| pci_write_config_dword(de->pdev, PCIPM, pmctl); |
| } |
| |
| static int de_init_hw (struct de_private *de) |
| { |
| struct net_device *dev = de->dev; |
| u32 macmode; |
| int rc; |
| |
| de_adapter_wake(de); |
| |
| macmode = dr32(MacMode) & ~MacModeClear; |
| |
| rc = de_reset_mac(de); |
| if (rc) |
| return rc; |
| |
| de_set_media(de); /* reset phy */ |
| |
| dw32(RxRingAddr, de->ring_dma); |
| dw32(TxRingAddr, de->ring_dma + (sizeof(struct de_desc) * DE_RX_RING_SIZE)); |
| |
| dw32(MacMode, RxTx | macmode); |
| |
| dr32(RxMissed); /* self-clearing */ |
| |
| dw32(IntrMask, de_intr_mask); |
| |
| de_set_rx_mode(dev); |
| |
| return 0; |
| } |
| |
| static int de_refill_rx (struct de_private *de) |
| { |
| unsigned i; |
| |
| for (i = 0; i < DE_RX_RING_SIZE; i++) { |
| struct sk_buff *skb; |
| |
| skb = dev_alloc_skb(de->rx_buf_sz); |
| if (!skb) |
| goto err_out; |
| |
| skb->dev = de->dev; |
| |
| de->rx_skb[i].mapping = pci_map_single(de->pdev, |
| skb->data, de->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| de->rx_skb[i].skb = skb; |
| |
| de->rx_ring[i].opts1 = cpu_to_le32(DescOwn); |
| if (i == (DE_RX_RING_SIZE - 1)) |
| de->rx_ring[i].opts2 = |
| cpu_to_le32(RingEnd | de->rx_buf_sz); |
| else |
| de->rx_ring[i].opts2 = cpu_to_le32(de->rx_buf_sz); |
| de->rx_ring[i].addr1 = cpu_to_le32(de->rx_skb[i].mapping); |
| de->rx_ring[i].addr2 = 0; |
| } |
| |
| return 0; |
| |
| err_out: |
| de_clean_rings(de); |
| return -ENOMEM; |
| } |
| |
| static int de_init_rings (struct de_private *de) |
| { |
| memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE); |
| de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd); |
| |
| de->rx_tail = 0; |
| de->tx_head = de->tx_tail = 0; |
| |
| return de_refill_rx (de); |
| } |
| |
| static int de_alloc_rings (struct de_private *de) |
| { |
| de->rx_ring = pci_alloc_consistent(de->pdev, DE_RING_BYTES, &de->ring_dma); |
| if (!de->rx_ring) |
| return -ENOMEM; |
| de->tx_ring = &de->rx_ring[DE_RX_RING_SIZE]; |
| return de_init_rings(de); |
| } |
| |
| static void de_clean_rings (struct de_private *de) |
| { |
| unsigned i; |
| |
| memset(de->rx_ring, 0, sizeof(struct de_desc) * DE_RX_RING_SIZE); |
| de->rx_ring[DE_RX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd); |
| wmb(); |
| memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE); |
| de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd); |
| wmb(); |
| |
| for (i = 0; i < DE_RX_RING_SIZE; i++) { |
| if (de->rx_skb[i].skb) { |
| pci_unmap_single(de->pdev, de->rx_skb[i].mapping, |
| de->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| dev_kfree_skb(de->rx_skb[i].skb); |
| } |
| } |
| |
| for (i = 0; i < DE_TX_RING_SIZE; i++) { |
| struct sk_buff *skb = de->tx_skb[i].skb; |
| if ((skb) && (skb != DE_DUMMY_SKB)) { |
| if (skb != DE_SETUP_SKB) { |
| de->net_stats.tx_dropped++; |
| pci_unmap_single(de->pdev, |
| de->tx_skb[i].mapping, |
| skb->len, PCI_DMA_TODEVICE); |
| dev_kfree_skb(skb); |
| } else { |
| pci_unmap_single(de->pdev, |
| de->tx_skb[i].mapping, |
| sizeof(de->setup_frame), |
| PCI_DMA_TODEVICE); |
| } |
| } |
| } |
| |
| memset(&de->rx_skb, 0, sizeof(struct ring_info) * DE_RX_RING_SIZE); |
| memset(&de->tx_skb, 0, sizeof(struct ring_info) * DE_TX_RING_SIZE); |
| } |
| |
| static void de_free_rings (struct de_private *de) |
| { |
| de_clean_rings(de); |
| pci_free_consistent(de->pdev, DE_RING_BYTES, de->rx_ring, de->ring_dma); |
| de->rx_ring = NULL; |
| de->tx_ring = NULL; |
| } |
| |
| static int de_open (struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| int rc; |
| |
| netif_printk(de, ifup, KERN_DEBUG, dev, "enabling interface\n"); |
| |
| de->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); |
| |
| rc = de_alloc_rings(de); |
| if (rc) { |
| netdev_err(dev, "ring allocation failure, err=%d\n", rc); |
| return rc; |
| } |
| |
| dw32(IntrMask, 0); |
| |
| rc = request_irq(dev->irq, de_interrupt, IRQF_SHARED, dev->name, dev); |
| if (rc) { |
| netdev_err(dev, "IRQ %d request failure, err=%d\n", |
| dev->irq, rc); |
| goto err_out_free; |
| } |
| |
| rc = de_init_hw(de); |
| if (rc) { |
| netdev_err(dev, "h/w init failure, err=%d\n", rc); |
| goto err_out_free_irq; |
| } |
| |
| netif_start_queue(dev); |
| mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK); |
| |
| return 0; |
| |
| err_out_free_irq: |
| free_irq(dev->irq, dev); |
| err_out_free: |
| de_free_rings(de); |
| return rc; |
| } |
| |
| static int de_close (struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| unsigned long flags; |
| |
| netif_printk(de, ifdown, KERN_DEBUG, dev, "disabling interface\n"); |
| |
| del_timer_sync(&de->media_timer); |
| |
| spin_lock_irqsave(&de->lock, flags); |
| de_stop_hw(de); |
| netif_stop_queue(dev); |
| netif_carrier_off(dev); |
| spin_unlock_irqrestore(&de->lock, flags); |
| |
| free_irq(dev->irq, dev); |
| |
| de_free_rings(de); |
| de_adapter_sleep(de); |
| return 0; |
| } |
| |
| static void de_tx_timeout (struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| |
| netdev_printk(KERN_DEBUG, dev, |
| "NIC status %08x mode %08x sia %08x desc %u/%u/%u\n", |
| dr32(MacStatus), dr32(MacMode), dr32(SIAStatus), |
| de->rx_tail, de->tx_head, de->tx_tail); |
| |
| del_timer_sync(&de->media_timer); |
| |
| disable_irq(dev->irq); |
| spin_lock_irq(&de->lock); |
| |
| de_stop_hw(de); |
| netif_stop_queue(dev); |
| netif_carrier_off(dev); |
| |
| spin_unlock_irq(&de->lock); |
| enable_irq(dev->irq); |
| |
| /* Update the error counts. */ |
| __de_get_stats(de); |
| |
| synchronize_irq(dev->irq); |
| de_clean_rings(de); |
| |
| de_init_rings(de); |
| |
| de_init_hw(de); |
| |
| netif_wake_queue(dev); |
| } |
| |
| static void __de_get_regs(struct de_private *de, u8 *buf) |
| { |
| int i; |
| u32 *rbuf = (u32 *)buf; |
| |
| /* read all CSRs */ |
| for (i = 0; i < DE_NUM_REGS; i++) |
| rbuf[i] = dr32(i * 8); |
| |
| /* handle self-clearing RxMissed counter, CSR8 */ |
| de_rx_missed(de, rbuf[8]); |
| } |
| |
| static int __de_get_settings(struct de_private *de, struct ethtool_cmd *ecmd) |
| { |
| ecmd->supported = de->media_supported; |
| ecmd->transceiver = XCVR_INTERNAL; |
| ecmd->phy_address = 0; |
| ecmd->advertising = de->media_advertise; |
| |
| switch (de->media_type) { |
| case DE_MEDIA_AUI: |
| ecmd->port = PORT_AUI; |
| break; |
| case DE_MEDIA_BNC: |
| ecmd->port = PORT_BNC; |
| break; |
| default: |
| ecmd->port = PORT_TP; |
| break; |
| } |
| |
| ethtool_cmd_speed_set(ecmd, 10); |
| |
| if (dr32(MacMode) & FullDuplex) |
| ecmd->duplex = DUPLEX_FULL; |
| else |
| ecmd->duplex = DUPLEX_HALF; |
| |
| if (de->media_lock) |
| ecmd->autoneg = AUTONEG_DISABLE; |
| else |
| ecmd->autoneg = AUTONEG_ENABLE; |
| |
| /* ignore maxtxpkt, maxrxpkt for now */ |
| |
| return 0; |
| } |
| |
| static int __de_set_settings(struct de_private *de, struct ethtool_cmd *ecmd) |
| { |
| u32 new_media; |
| unsigned int media_lock; |
| |
| if (ethtool_cmd_speed(ecmd) != 10) |
| return -EINVAL; |
| if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL) |
| return -EINVAL; |
| if (ecmd->port != PORT_TP && ecmd->port != PORT_AUI && ecmd->port != PORT_BNC) |
| return -EINVAL; |
| if (de->de21040 && ecmd->port == PORT_BNC) |
| return -EINVAL; |
| if (ecmd->transceiver != XCVR_INTERNAL) |
| return -EINVAL; |
| if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE) |
| return -EINVAL; |
| if (ecmd->advertising & ~de->media_supported) |
| return -EINVAL; |
| if (ecmd->autoneg == AUTONEG_ENABLE && |
| (!(ecmd->advertising & ADVERTISED_Autoneg))) |
| return -EINVAL; |
| |
| switch (ecmd->port) { |
| case PORT_AUI: |
| new_media = DE_MEDIA_AUI; |
| if (!(ecmd->advertising & ADVERTISED_AUI)) |
| return -EINVAL; |
| break; |
| case PORT_BNC: |
| new_media = DE_MEDIA_BNC; |
| if (!(ecmd->advertising & ADVERTISED_BNC)) |
| return -EINVAL; |
| break; |
| default: |
| if (ecmd->autoneg == AUTONEG_ENABLE) |
| new_media = DE_MEDIA_TP_AUTO; |
| else if (ecmd->duplex == DUPLEX_FULL) |
| new_media = DE_MEDIA_TP_FD; |
| else |
| new_media = DE_MEDIA_TP; |
| if (!(ecmd->advertising & ADVERTISED_TP)) |
| return -EINVAL; |
| if (!(ecmd->advertising & (ADVERTISED_10baseT_Full | ADVERTISED_10baseT_Half))) |
| return -EINVAL; |
| break; |
| } |
| |
| media_lock = (ecmd->autoneg == AUTONEG_ENABLE) ? 0 : 1; |
| |
| if ((new_media == de->media_type) && |
| (media_lock == de->media_lock) && |
| (ecmd->advertising == de->media_advertise)) |
| return 0; /* nothing to change */ |
| |
| de_link_down(de); |
| mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK); |
| de_stop_rxtx(de); |
| |
| de->media_type = new_media; |
| de->media_lock = media_lock; |
| de->media_advertise = ecmd->advertising; |
| de_set_media(de); |
| if (netif_running(de->dev)) |
| de_start_rxtx(de); |
| |
| return 0; |
| } |
| |
| static void de_get_drvinfo (struct net_device *dev,struct ethtool_drvinfo *info) |
| { |
| struct de_private *de = netdev_priv(dev); |
| |
| strcpy (info->driver, DRV_NAME); |
| strcpy (info->version, DRV_VERSION); |
| strcpy (info->bus_info, pci_name(de->pdev)); |
| info->eedump_len = DE_EEPROM_SIZE; |
| } |
| |
| static int de_get_regs_len(struct net_device *dev) |
| { |
| return DE_REGS_SIZE; |
| } |
| |
| static int de_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) |
| { |
| struct de_private *de = netdev_priv(dev); |
| int rc; |
| |
| spin_lock_irq(&de->lock); |
| rc = __de_get_settings(de, ecmd); |
| spin_unlock_irq(&de->lock); |
| |
| return rc; |
| } |
| |
| static int de_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) |
| { |
| struct de_private *de = netdev_priv(dev); |
| int rc; |
| |
| spin_lock_irq(&de->lock); |
| rc = __de_set_settings(de, ecmd); |
| spin_unlock_irq(&de->lock); |
| |
| return rc; |
| } |
| |
| static u32 de_get_msglevel(struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| |
| return de->msg_enable; |
| } |
| |
| static void de_set_msglevel(struct net_device *dev, u32 msglvl) |
| { |
| struct de_private *de = netdev_priv(dev); |
| |
| de->msg_enable = msglvl; |
| } |
| |
| static int de_get_eeprom(struct net_device *dev, |
| struct ethtool_eeprom *eeprom, u8 *data) |
| { |
| struct de_private *de = netdev_priv(dev); |
| |
| if (!de->ee_data) |
| return -EOPNOTSUPP; |
| if ((eeprom->offset != 0) || (eeprom->magic != 0) || |
| (eeprom->len != DE_EEPROM_SIZE)) |
| return -EINVAL; |
| memcpy(data, de->ee_data, eeprom->len); |
| |
| return 0; |
| } |
| |
| static int de_nway_reset(struct net_device *dev) |
| { |
| struct de_private *de = netdev_priv(dev); |
| u32 status; |
| |
| if (de->media_type != DE_MEDIA_TP_AUTO) |
| return -EINVAL; |
| if (netif_carrier_ok(de->dev)) |
| de_link_down(de); |
| |
| status = dr32(SIAStatus); |
| dw32(SIAStatus, (status & ~NWayState) | NWayRestart); |
| netif_info(de, link, dev, "link nway restart, status %x,%x\n", |
| status, dr32(SIAStatus)); |
| return 0; |
| } |
| |
| static void de_get_regs(struct net_device *dev, struct ethtool_regs *regs, |
| void *data) |
| { |
| struct de_private *de = netdev_priv(dev); |
| |
| regs->version = (DE_REGS_VER << 2) | de->de21040; |
| |
| spin_lock_irq(&de->lock); |
| __de_get_regs(de, data); |
| spin_unlock_irq(&de->lock); |
| } |
| |
| static const struct ethtool_ops de_ethtool_ops = { |
| .get_link = ethtool_op_get_link, |
| .get_drvinfo = de_get_drvinfo, |
| .get_regs_len = de_get_regs_len, |
| .get_settings = de_get_settings, |
| .set_settings = de_set_settings, |
| .get_msglevel = de_get_msglevel, |
| .set_msglevel = de_set_msglevel, |
| .get_eeprom = de_get_eeprom, |
| .nway_reset = de_nway_reset, |
| .get_regs = de_get_regs, |
| }; |
| |
| static void __devinit de21040_get_mac_address (struct de_private *de) |
| { |
| unsigned i; |
| |
| dw32 (ROMCmd, 0); /* Reset the pointer with a dummy write. */ |
| udelay(5); |
| |
| for (i = 0; i < 6; i++) { |
| int value, boguscnt = 100000; |
| do { |
| value = dr32(ROMCmd); |
| rmb(); |
| } while (value < 0 && --boguscnt > 0); |
| de->dev->dev_addr[i] = value; |
| udelay(1); |
| if (boguscnt <= 0) |
| pr_warn("timeout reading 21040 MAC address byte %u\n", |
| i); |
| } |
| } |
| |
| static void __devinit de21040_get_media_info(struct de_private *de) |
| { |
| unsigned int i; |
| |
| de->media_type = DE_MEDIA_TP; |
| de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full | |
| SUPPORTED_10baseT_Half | SUPPORTED_AUI; |
| de->media_advertise = de->media_supported; |
| |
| for (i = 0; i < DE_MAX_MEDIA; i++) { |
| switch (i) { |
| case DE_MEDIA_AUI: |
| case DE_MEDIA_TP: |
| case DE_MEDIA_TP_FD: |
| de->media[i].type = i; |
| de->media[i].csr13 = t21040_csr13[i]; |
| de->media[i].csr14 = t21040_csr14[i]; |
| de->media[i].csr15 = t21040_csr15[i]; |
| break; |
| default: |
| de->media[i].type = DE_MEDIA_INVALID; |
| break; |
| } |
| } |
| } |
| |
| /* Note: this routine returns extra data bits for size detection. */ |
| static unsigned __devinit tulip_read_eeprom(void __iomem *regs, int location, int addr_len) |
| { |
| int i; |
| unsigned retval = 0; |
| void __iomem *ee_addr = regs + ROMCmd; |
| int read_cmd = location | (EE_READ_CMD << addr_len); |
| |
| writel(EE_ENB & ~EE_CS, ee_addr); |
| writel(EE_ENB, ee_addr); |
| |
| /* Shift the read command bits out. */ |
| for (i = 4 + addr_len; i >= 0; i--) { |
| short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; |
| writel(EE_ENB | dataval, ee_addr); |
| readl(ee_addr); |
| writel(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); |
| readl(ee_addr); |
| retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0); |
| } |
| writel(EE_ENB, ee_addr); |
| readl(ee_addr); |
| |
| for (i = 16; i > 0; i--) { |
| writel(EE_ENB | EE_SHIFT_CLK, ee_addr); |
| readl(ee_addr); |
| retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0); |
| writel(EE_ENB, ee_addr); |
| readl(ee_addr); |
| } |
| |
| /* Terminate the EEPROM access. */ |
| writel(EE_ENB & ~EE_CS, ee_addr); |
| return retval; |
| } |
| |
| static void __devinit de21041_get_srom_info (struct de_private *de) |
| { |
| unsigned i, sa_offset = 0, ofs; |
| u8 ee_data[DE_EEPROM_SIZE + 6] = {}; |
| unsigned ee_addr_size = tulip_read_eeprom(de->regs, 0xff, 8) & 0x40000 ? 8 : 6; |
| struct de_srom_info_leaf *il; |
| void *bufp; |
| |
| /* download entire eeprom */ |
| for (i = 0; i < DE_EEPROM_WORDS; i++) |
| ((__le16 *)ee_data)[i] = |
| cpu_to_le16(tulip_read_eeprom(de->regs, i, ee_addr_size)); |
| |
| /* DEC now has a specification but early board makers |
| just put the address in the first EEPROM locations. */ |
| /* This does memcmp(eedata, eedata+16, 8) */ |
| |
| #ifndef CONFIG_MIPS_COBALT |
| |
| for (i = 0; i < 8; i ++) |
| if (ee_data[i] != ee_data[16+i]) |
| sa_offset = 20; |
| |
| #endif |
| |
| /* store MAC address */ |
| for (i = 0; i < 6; i ++) |
| de->dev->dev_addr[i] = ee_data[i + sa_offset]; |
| |
| /* get offset of controller 0 info leaf. ignore 2nd byte. */ |
| ofs = ee_data[SROMC0InfoLeaf]; |
| if (ofs >= (sizeof(ee_data) - sizeof(struct de_srom_info_leaf) - sizeof(struct de_srom_media_block))) |
| goto bad_srom; |
| |
| /* get pointer to info leaf */ |
| il = (struct de_srom_info_leaf *) &ee_data[ofs]; |
| |
| /* paranoia checks */ |
| if (il->n_blocks == 0) |
| goto bad_srom; |
| if ((sizeof(ee_data) - ofs) < |
| (sizeof(struct de_srom_info_leaf) + (sizeof(struct de_srom_media_block) * il->n_blocks))) |
| goto bad_srom; |
| |
| /* get default media type */ |
| switch (get_unaligned(&il->default_media)) { |
| case 0x0001: de->media_type = DE_MEDIA_BNC; break; |
| case 0x0002: de->media_type = DE_MEDIA_AUI; break; |
| case 0x0204: de->media_type = DE_MEDIA_TP_FD; break; |
| default: de->media_type = DE_MEDIA_TP_AUTO; break; |
| } |
| |
| if (netif_msg_probe(de)) |
| pr_info("de%d: SROM leaf offset %u, default media %s\n", |
| de->board_idx, ofs, media_name[de->media_type]); |
| |
| /* init SIA register values to defaults */ |
| for (i = 0; i < DE_MAX_MEDIA; i++) { |
| de->media[i].type = DE_MEDIA_INVALID; |
| de->media[i].csr13 = 0xffff; |
| de->media[i].csr14 = 0xffff; |
| de->media[i].csr15 = 0xffff; |
| } |
| |
| /* parse media blocks to see what medias are supported, |
| * and if any custom CSR values are provided |
| */ |
| bufp = ((void *)il) + sizeof(*il); |
| for (i = 0; i < il->n_blocks; i++) { |
| struct de_srom_media_block *ib = bufp; |
| unsigned idx; |
| |
| /* index based on media type in media block */ |
| switch(ib->opts & MediaBlockMask) { |
| case 0: /* 10baseT */ |
| de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
| | SUPPORTED_Autoneg; |
| idx = DE_MEDIA_TP; |
| de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO; |
| break; |
| case 1: /* BNC */ |
| de->media_supported |= SUPPORTED_BNC; |
| idx = DE_MEDIA_BNC; |
| break; |
| case 2: /* AUI */ |
| de->media_supported |= SUPPORTED_AUI; |
| idx = DE_MEDIA_AUI; |
| break; |
| case 4: /* 10baseT-FD */ |
| de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full |
| | SUPPORTED_Autoneg; |
| idx = DE_MEDIA_TP_FD; |
| de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO; |
| break; |
| default: |
| goto bad_srom; |
| } |
| |
| de->media[idx].type = idx; |
| |
| if (netif_msg_probe(de)) |
| pr_info("de%d: media block #%u: %s", |
| de->board_idx, i, |
| media_name[de->media[idx].type]); |
| |
| bufp += sizeof (ib->opts); |
| |
| if (ib->opts & MediaCustomCSRs) { |
| de->media[idx].csr13 = get_unaligned(&ib->csr13); |
| de->media[idx].csr14 = get_unaligned(&ib->csr14); |
| de->media[idx].csr15 = get_unaligned(&ib->csr15); |
| bufp += sizeof(ib->csr13) + sizeof(ib->csr14) + |
| sizeof(ib->csr15); |
| |
| if (netif_msg_probe(de)) |
| pr_cont(" (%x,%x,%x)\n", |
| de->media[idx].csr13, |
| de->media[idx].csr14, |
| de->media[idx].csr15); |
| |
| } else { |
| if (netif_msg_probe(de)) |
| pr_cont("\n"); |
| } |
| |
| if (bufp > ((void *)&ee_data[DE_EEPROM_SIZE - 3])) |
| break; |
| } |
| |
| de->media_advertise = de->media_supported; |
| |
| fill_defaults: |
| /* fill in defaults, for cases where custom CSRs not used */ |
| for (i = 0; i < DE_MAX_MEDIA; i++) { |
| if (de->media[i].csr13 == 0xffff) |
| de->media[i].csr13 = t21041_csr13[i]; |
| if (de->media[i].csr14 == 0xffff) { |
| /* autonegotiation is broken at least on some chip |
| revisions - rev. 0x21 works, 0x11 does not */ |
| if (de->pdev->revision < 0x20) |
| de->media[i].csr14 = t21041_csr14_brk[i]; |
| else |
| de->media[i].csr14 = t21041_csr14[i]; |
| } |
| if (de->media[i].csr15 == 0xffff) |
| de->media[i].csr15 = t21041_csr15[i]; |
| } |
| |
| de->ee_data = kmemdup(&ee_data[0], DE_EEPROM_SIZE, GFP_KERNEL); |
| |
| return; |
| |
| bad_srom: |
| /* for error cases, it's ok to assume we support all these */ |
| for (i = 0; i < DE_MAX_MEDIA; i++) |
| de->media[i].type = i; |
| de->media_supported = |
| SUPPORTED_10baseT_Half | |
| SUPPORTED_10baseT_Full | |
| SUPPORTED_Autoneg | |
| SUPPORTED_TP | |
| SUPPORTED_AUI | |
| SUPPORTED_BNC; |
| goto fill_defaults; |
| } |
| |
| static const struct net_device_ops de_netdev_ops = { |
| .ndo_open = de_open, |
| .ndo_stop = de_close, |
| .ndo_set_multicast_list = de_set_rx_mode, |
| .ndo_start_xmit = de_start_xmit, |
| .ndo_get_stats = de_get_stats, |
| .ndo_tx_timeout = de_tx_timeout, |
| .ndo_change_mtu = eth_change_mtu, |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| }; |
| |
| static int __devinit de_init_one (struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| struct net_device *dev; |
| struct de_private *de; |
| int rc; |
| void __iomem *regs; |
| unsigned long pciaddr; |
| static int board_idx = -1; |
| |
| board_idx++; |
| |
| #ifndef MODULE |
| if (board_idx == 0) |
| printk("%s", version); |
| #endif |
| |
| /* allocate a new ethernet device structure, and fill in defaults */ |
| dev = alloc_etherdev(sizeof(struct de_private)); |
| if (!dev) |
| return -ENOMEM; |
| |
| dev->netdev_ops = &de_netdev_ops; |
| SET_NETDEV_DEV(dev, &pdev->dev); |
| dev->ethtool_ops = &de_ethtool_ops; |
| dev->watchdog_timeo = TX_TIMEOUT; |
| |
| de = netdev_priv(dev); |
| de->de21040 = ent->driver_data == 0 ? 1 : 0; |
| de->pdev = pdev; |
| de->dev = dev; |
| de->msg_enable = (debug < 0 ? DE_DEF_MSG_ENABLE : debug); |
| de->board_idx = board_idx; |
| spin_lock_init (&de->lock); |
| init_timer(&de->media_timer); |
| if (de->de21040) |
| de->media_timer.function = de21040_media_timer; |
| else |
| de->media_timer.function = de21041_media_timer; |
| de->media_timer.data = (unsigned long) de; |
| |
| netif_carrier_off(dev); |
| |
| /* wake up device, assign resources */ |
| rc = pci_enable_device(pdev); |
| if (rc) |
| goto err_out_free; |
| |
| /* reserve PCI resources to ensure driver atomicity */ |
| rc = pci_request_regions(pdev, DRV_NAME); |
| if (rc) |
| goto err_out_disable; |
| |
| /* check for invalid IRQ value */ |
| if (pdev->irq < 2) { |
| rc = -EIO; |
| pr_err("invalid irq (%d) for pci dev %s\n", |
| pdev->irq, pci_name(pdev)); |
| goto err_out_res; |
| } |
| |
| dev->irq = pdev->irq; |
| |
| /* obtain and check validity of PCI I/O address */ |
| pciaddr = pci_resource_start(pdev, 1); |
| if (!pciaddr) { |
| rc = -EIO; |
| pr_err("no MMIO resource for pci dev %s\n", pci_name(pdev)); |
| goto err_out_res; |
| } |
| if (pci_resource_len(pdev, 1) < DE_REGS_SIZE) { |
| rc = -EIO; |
| pr_err("MMIO resource (%llx) too small on pci dev %s\n", |
| (unsigned long long)pci_resource_len(pdev, 1), |
| pci_name(pdev)); |
| goto err_out_res; |
| } |
| |
| /* remap CSR registers */ |
| regs = ioremap_nocache(pciaddr, DE_REGS_SIZE); |
| if (!regs) { |
| rc = -EIO; |
| pr_err("Cannot map PCI MMIO (%llx@%lx) on pci dev %s\n", |
| (unsigned long long)pci_resource_len(pdev, 1), |
| pciaddr, pci_name(pdev)); |
| goto err_out_res; |
| } |
| dev->base_addr = (unsigned long) regs; |
| de->regs = regs; |
| |
| de_adapter_wake(de); |
| |
| /* make sure hardware is not running */ |
| rc = de_reset_mac(de); |
| if (rc) { |
| pr_err("Cannot reset MAC, pci dev %s\n", pci_name(pdev)); |
| goto err_out_iomap; |
| } |
| |
| /* get MAC address, initialize default media type and |
| * get list of supported media |
| */ |
| if (de->de21040) { |
| de21040_get_mac_address(de); |
| de21040_get_media_info(de); |
| } else { |
| de21041_get_srom_info(de); |
| } |
| |
| /* register new network interface with kernel */ |
| rc = register_netdev(dev); |
| if (rc) |
| goto err_out_iomap; |
| |
| /* print info about board and interface just registered */ |
| netdev_info(dev, "%s at 0x%lx, %pM, IRQ %d\n", |
| de->de21040 ? "21040" : "21041", |
| dev->base_addr, |
| dev->dev_addr, |
| dev->irq); |
| |
| pci_set_drvdata(pdev, dev); |
| |
| /* enable busmastering */ |
| pci_set_master(pdev); |
| |
| /* put adapter to sleep */ |
| de_adapter_sleep(de); |
| |
| return 0; |
| |
| err_out_iomap: |
| kfree(de->ee_data); |
| iounmap(regs); |
| err_out_res: |
| pci_release_regions(pdev); |
| err_out_disable: |
| pci_disable_device(pdev); |
| err_out_free: |
| free_netdev(dev); |
| return rc; |
| } |
| |
| static void __devexit de_remove_one (struct pci_dev *pdev) |
| { |
| struct net_device *dev = pci_get_drvdata(pdev); |
| struct de_private *de = netdev_priv(dev); |
| |
| BUG_ON(!dev); |
| unregister_netdev(dev); |
| kfree(de->ee_data); |
| iounmap(de->regs); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| free_netdev(dev); |
| } |
| |
| #ifdef CONFIG_PM |
| |
| static int de_suspend (struct pci_dev *pdev, pm_message_t state) |
| { |
| struct net_device *dev = pci_get_drvdata (pdev); |
| struct de_private *de = netdev_priv(dev); |
| |
| rtnl_lock(); |
| if (netif_running (dev)) { |
| del_timer_sync(&de->media_timer); |
| |
| disable_irq(dev->irq); |
| spin_lock_irq(&de->lock); |
| |
| de_stop_hw(de); |
| netif_stop_queue(dev); |
| netif_device_detach(dev); |
| netif_carrier_off(dev); |
| |
| spin_unlock_irq(&de->lock); |
| enable_irq(dev->irq); |
| |
| /* Update the error counts. */ |
| __de_get_stats(de); |
| |
| synchronize_irq(dev->irq); |
| de_clean_rings(de); |
| |
| de_adapter_sleep(de); |
| pci_disable_device(pdev); |
| } else { |
| netif_device_detach(dev); |
| } |
| rtnl_unlock(); |
| return 0; |
| } |
| |
| static int de_resume (struct pci_dev *pdev) |
| { |
| struct net_device *dev = pci_get_drvdata (pdev); |
| struct de_private *de = netdev_priv(dev); |
| int retval = 0; |
| |
| rtnl_lock(); |
| if (netif_device_present(dev)) |
| goto out; |
| if (!netif_running(dev)) |
| goto out_attach; |
| if ((retval = pci_enable_device(pdev))) { |
| netdev_err(dev, "pci_enable_device failed in resume\n"); |
| goto out; |
| } |
| pci_set_master(pdev); |
| de_init_rings(de); |
| de_init_hw(de); |
| out_attach: |
| netif_device_attach(dev); |
| out: |
| rtnl_unlock(); |
| return 0; |
| } |
| |
| #endif /* CONFIG_PM */ |
| |
| static struct pci_driver de_driver = { |
| .name = DRV_NAME, |
| .id_table = de_pci_tbl, |
| .probe = de_init_one, |
| .remove = __devexit_p(de_remove_one), |
| #ifdef CONFIG_PM |
| .suspend = de_suspend, |
| .resume = de_resume, |
| #endif |
| }; |
| |
| static int __init de_init (void) |
| { |
| #ifdef MODULE |
| printk("%s", version); |
| #endif |
| return pci_register_driver(&de_driver); |
| } |
| |
| static void __exit de_exit (void) |
| { |
| pci_unregister_driver (&de_driver); |
| } |
| |
| module_init(de_init); |
| module_exit(de_exit); |