From c97ec42a7a35d214e0c715f77e2ccdfe8ac5bf7c Mon Sep 17 00:00:00 2001 From: Taku Izumi Date: Tue, 27 Apr 2010 14:39:30 +0000 Subject: [PATCH] igb: add registers etc. printout code just before resetting adapters This patch adds registers (,tx/rx rings' status and so on) printout code just before resetting adapters. This will be helpful for detecting the root cause of adapters reset. Signed-off-by: Taku Izumi Signed-off-by: Koki Sanagi Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/igb/igb_main.c | 332 +++++++++++++++++++++++++++++++++++++ 1 file changed, 332 insertions(+) diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 9d042fe299ce..438737d58688 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -201,6 +201,336 @@ MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); +struct igb_reg_info { + u32 ofs; + char *name; +}; + +static const struct igb_reg_info igb_reg_info_tbl[] = { + + /* General Registers */ + {E1000_CTRL, "CTRL"}, + {E1000_STATUS, "STATUS"}, + {E1000_CTRL_EXT, "CTRL_EXT"}, + + /* Interrupt Registers */ + {E1000_ICR, "ICR"}, + + /* RX Registers */ + {E1000_RCTL, "RCTL"}, + {E1000_RDLEN(0), "RDLEN"}, + {E1000_RDH(0), "RDH"}, + {E1000_RDT(0), "RDT"}, + {E1000_RXDCTL(0), "RXDCTL"}, + {E1000_RDBAL(0), "RDBAL"}, + {E1000_RDBAH(0), "RDBAH"}, + + /* TX Registers */ + {E1000_TCTL, "TCTL"}, + {E1000_TDBAL(0), "TDBAL"}, + {E1000_TDBAH(0), "TDBAH"}, + {E1000_TDLEN(0), "TDLEN"}, + {E1000_TDH(0), "TDH"}, + {E1000_TDT(0), "TDT"}, + {E1000_TXDCTL(0), "TXDCTL"}, + {E1000_TDFH, "TDFH"}, + {E1000_TDFT, "TDFT"}, + {E1000_TDFHS, "TDFHS"}, + {E1000_TDFPC, "TDFPC"}, + + /* List Terminator */ + {} +}; + +/* + * igb_regdump - register printout routine + */ +static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo) +{ + int n = 0; + char rname[16]; + u32 regs[8]; + + switch (reginfo->ofs) { + case E1000_RDLEN(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_RDLEN(n)); + break; + case E1000_RDH(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_RDH(n)); + break; + case E1000_RDT(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_RDT(n)); + break; + case E1000_RXDCTL(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_RXDCTL(n)); + break; + case E1000_RDBAL(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_RDBAL(n)); + break; + case E1000_RDBAH(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_RDBAH(n)); + break; + case E1000_TDBAL(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_RDBAL(n)); + break; + case E1000_TDBAH(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_TDBAH(n)); + break; + case E1000_TDLEN(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_TDLEN(n)); + break; + case E1000_TDH(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_TDH(n)); + break; + case E1000_TDT(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_TDT(n)); + break; + case E1000_TXDCTL(0): + for (n = 0; n < 4; n++) + regs[n] = rd32(E1000_TXDCTL(n)); + break; + default: + printk(KERN_INFO "%-15s %08x\n", + reginfo->name, rd32(reginfo->ofs)); + return; + } + + snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]"); + printk(KERN_INFO "%-15s ", rname); + for (n = 0; n < 4; n++) + printk(KERN_CONT "%08x ", regs[n]); + printk(KERN_CONT "\n"); +} + +/* + * igb_dump - Print registers, tx-rings and rx-rings + */ +static void igb_dump(struct igb_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct e1000_hw *hw = &adapter->hw; + struct igb_reg_info *reginfo; + int n = 0; + struct igb_ring *tx_ring; + union e1000_adv_tx_desc *tx_desc; + struct my_u0 { u64 a; u64 b; } *u0; + struct igb_buffer *buffer_info; + struct igb_ring *rx_ring; + union e1000_adv_rx_desc *rx_desc; + u32 staterr; + int i = 0; + + if (!netif_msg_hw(adapter)) + return; + + /* Print netdevice Info */ + if (netdev) { + dev_info(&adapter->pdev->dev, "Net device Info\n"); + printk(KERN_INFO "Device Name state " + "trans_start last_rx\n"); + printk(KERN_INFO "%-15s %016lX %016lX %016lX\n", + netdev->name, + netdev->state, + netdev->trans_start, + netdev->last_rx); + } + + /* Print Registers */ + dev_info(&adapter->pdev->dev, "Register Dump\n"); + printk(KERN_INFO " Register Name Value\n"); + for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl; + reginfo->name; reginfo++) { + igb_regdump(hw, reginfo); + } + + /* Print TX Ring Summary */ + if (!netdev || !netif_running(netdev)) + goto exit; + + dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); + printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]" + " leng ntw timestamp\n"); + for (n = 0; n < adapter->num_tx_queues; n++) { + tx_ring = adapter->tx_ring[n]; + buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; + printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n", + n, tx_ring->next_to_use, tx_ring->next_to_clean, + (u64)buffer_info->dma, + buffer_info->length, + buffer_info->next_to_watch, + (u64)buffer_info->time_stamp); + } + + /* Print TX Rings */ + if (!netif_msg_tx_done(adapter)) + goto rx_ring_summary; + + dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); + + /* Transmit Descriptor Formats + * + * Advanced Transmit Descriptor + * +--------------------------------------------------------------+ + * 0 | Buffer Address [63:0] | + * +--------------------------------------------------------------+ + * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN | + * +--------------------------------------------------------------+ + * 63 46 45 40 39 38 36 35 32 31 24 15 0 + */ + + for (n = 0; n < adapter->num_tx_queues; n++) { + tx_ring = adapter->tx_ring[n]; + printk(KERN_INFO "------------------------------------\n"); + printk(KERN_INFO "TX QUEUE INDEX = %d\n", tx_ring->queue_index); + printk(KERN_INFO "------------------------------------\n"); + printk(KERN_INFO "T [desc] [address 63:0 ] " + "[PlPOCIStDDM Ln] [bi->dma ] " + "leng ntw timestamp bi->skb\n"); + + for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { + tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); + buffer_info = &tx_ring->buffer_info[i]; + u0 = (struct my_u0 *)tx_desc; + printk(KERN_INFO "T [0x%03X] %016llX %016llX %016llX" + " %04X %3X %016llX %p", i, + le64_to_cpu(u0->a), + le64_to_cpu(u0->b), + (u64)buffer_info->dma, + buffer_info->length, + buffer_info->next_to_watch, + (u64)buffer_info->time_stamp, + buffer_info->skb); + if (i == tx_ring->next_to_use && + i == tx_ring->next_to_clean) + printk(KERN_CONT " NTC/U\n"); + else if (i == tx_ring->next_to_use) + printk(KERN_CONT " NTU\n"); + else if (i == tx_ring->next_to_clean) + printk(KERN_CONT " NTC\n"); + else + printk(KERN_CONT "\n"); + + if (netif_msg_pktdata(adapter) && buffer_info->dma != 0) + print_hex_dump(KERN_INFO, "", + DUMP_PREFIX_ADDRESS, + 16, 1, phys_to_virt(buffer_info->dma), + buffer_info->length, true); + } + } + + /* Print RX Rings Summary */ +rx_ring_summary: + dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); + printk(KERN_INFO "Queue [NTU] [NTC]\n"); + for (n = 0; n < adapter->num_rx_queues; n++) { + rx_ring = adapter->rx_ring[n]; + printk(KERN_INFO " %5d %5X %5X\n", n, + rx_ring->next_to_use, rx_ring->next_to_clean); + } + + /* Print RX Rings */ + if (!netif_msg_rx_status(adapter)) + goto exit; + + dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); + + /* Advanced Receive Descriptor (Read) Format + * 63 1 0 + * +-----------------------------------------------------+ + * 0 | Packet Buffer Address [63:1] |A0/NSE| + * +----------------------------------------------+------+ + * 8 | Header Buffer Address [63:1] | DD | + * +-----------------------------------------------------+ + * + * + * Advanced Receive Descriptor (Write-Back) Format + * + * 63 48 47 32 31 30 21 20 17 16 4 3 0 + * +------------------------------------------------------+ + * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS | + * | Checksum Ident | | | | Type | Type | + * +------------------------------------------------------+ + * 8 | VLAN Tag | Length | Extended Error | Extended Status | + * +------------------------------------------------------+ + * 63 48 47 32 31 20 19 0 + */ + + for (n = 0; n < adapter->num_rx_queues; n++) { + rx_ring = adapter->rx_ring[n]; + printk(KERN_INFO "------------------------------------\n"); + printk(KERN_INFO "RX QUEUE INDEX = %d\n", rx_ring->queue_index); + printk(KERN_INFO "------------------------------------\n"); + printk(KERN_INFO "R [desc] [ PktBuf A0] " + "[ HeadBuf DD] [bi->dma ] [bi->skb] " + "<-- Adv Rx Read format\n"); + printk(KERN_INFO "RWB[desc] [PcsmIpSHl PtRs] " + "[vl er S cks ln] ---------------- [bi->skb] " + "<-- Adv Rx Write-Back format\n"); + + for (i = 0; i < rx_ring->count; i++) { + buffer_info = &rx_ring->buffer_info[i]; + rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); + u0 = (struct my_u0 *)rx_desc; + staterr = le32_to_cpu(rx_desc->wb.upper.status_error); + if (staterr & E1000_RXD_STAT_DD) { + /* Descriptor Done */ + printk(KERN_INFO "RWB[0x%03X] %016llX " + "%016llX ---------------- %p", i, + le64_to_cpu(u0->a), + le64_to_cpu(u0->b), + buffer_info->skb); + } else { + printk(KERN_INFO "R [0x%03X] %016llX " + "%016llX %016llX %p", i, + le64_to_cpu(u0->a), + le64_to_cpu(u0->b), + (u64)buffer_info->dma, + buffer_info->skb); + + if (netif_msg_pktdata(adapter)) { + print_hex_dump(KERN_INFO, "", + DUMP_PREFIX_ADDRESS, + 16, 1, + phys_to_virt(buffer_info->dma), + rx_ring->rx_buffer_len, true); + if (rx_ring->rx_buffer_len + < IGB_RXBUFFER_1024) + print_hex_dump(KERN_INFO, "", + DUMP_PREFIX_ADDRESS, + 16, 1, + phys_to_virt( + buffer_info->page_dma + + buffer_info->page_offset), + PAGE_SIZE/2, true); + } + } + + if (i == rx_ring->next_to_use) + printk(KERN_CONT " NTU\n"); + else if (i == rx_ring->next_to_clean) + printk(KERN_CONT " NTC\n"); + else + printk(KERN_CONT "\n"); + + } + } + +exit: + return; +} + + /** * igb_read_clock - read raw cycle counter (to be used by time counter) */ @@ -3858,6 +4188,8 @@ static void igb_reset_task(struct work_struct *work) struct igb_adapter *adapter; adapter = container_of(work, struct igb_adapter, reset_task); + igb_dump(adapter); + netdev_err(adapter->netdev, "Reset adapter\n"); igb_reinit_locked(adapter); } -- 2.20.1