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Date: Thu, 07 Jan 2010 20:01:10 +0900
From: Taku Izumi <izumi.taku@...fujitsu.com>
To: netdev@...r.kernel.org, Bruce Allan <bruce.w.allan@...el.com>,
"David S. Miller" <davem@...emloft.net>,
Jesse Brandeburg <jesse.brandeburg@...el.com>,
John Ronciak <john.ronciak@...el.com>,
"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
PJ Waskiewicz <peter.p.waskiewicz.jr@...el.com>
CC: Koki Sanagi <sanagi.koki@...fujitsu.com>,
Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
Subject: [PATCH 1/3] e1000e: 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.
The default output is netdevice status (transstart, last_rx), registers,
and tx/rx rings' simple information. TX/RX descriptors information and
buffer_info can be output by changing the dump_flag module option, but,
of course, the amount of output becomes quite large.
Signed-off-by: Taku Izumi <izumi.taku@...fujitsu.com>
Signed-off-by: Koki Sanagi <sanagi.koki@...fujitsu.com>
---
drivers/net/e1000e/netdev.c | 386 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 386 insertions(+)
Index: net-next-2.6/drivers/net/e1000e/netdev.c
===================================================================
--- net-next-2.6.orig/drivers/net/e1000e/netdev.c
+++ net-next-2.6/drivers/net/e1000e/netdev.c
@@ -52,6 +52,14 @@
char e1000e_driver_name[] = "e1000e";
const char e1000e_driver_version[] = DRV_VERSION;
+static unsigned int dump_flag = 1;
+module_param(dump_flag, uint, 0644);
+MODULE_PARM_DESC(dump_flag, "Dump Flag");
+#define E1000_DUMP_REGS (1 << 0)
+#define E1000_DUMP_TX_RINGS (1 << 1)
+#define E1000_DUMP_RX_RINGS (1 << 2)
+#define E1000_DUMP_BUFFERS (1 << 3)
+
static const struct e1000_info *e1000_info_tbl[] = {
[board_82571] = &e1000_82571_info,
[board_82572] = &e1000_82572_info,
@@ -65,6 +73,383 @@ static const struct e1000_info *e1000_in
[board_pchlan] = &e1000_pch_info,
};
+static void hexdump(dma_addr_t dma, u16 len)
+{
+ uint16_t offset, i;
+ char str[80], byte[4];
+ void *va = phys_to_virt((unsigned long)dma);
+
+ printk(KERN_ERR "buffer at %016llX (%d)\n", (u64)dma, len);
+ for (offset = 0; offset < len; offset += 16) {
+ sprintf(str, "%04x: ", offset);
+ for (i = 0; i < 16; i++) {
+ if ((offset + i) < len)
+ sprintf(byte, "%02x ",
+ ((unsigned char *)va)[offset + i]);
+ else
+ strcpy(byte, " ");
+ strcat(str, byte);
+ }
+ printk(KERN_ERR "%s\n", str);
+ }
+}
+
+/*
+ * e1000e_dump - Print registers, tx-ring and rx-ring
+ */
+static void e1000e_dump(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ u32 reg;
+ char rname[16];
+ int n = 0;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_tx_desc *tx_desc;
+ struct my_u0 { u64 a; u64 b; } *u0;
+ struct e1000_buffer *buffer_info;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ union e1000_rx_desc_packet_split *rx_desc_ps;
+ struct e1000_rx_desc *rx_desc;
+ struct my_u1 { u64 a; u64 b; u64 c; u64 d; } *u1;
+ u32 staterr;
+ int i = 0;
+
+ /* Print netdevice Info */
+ if (netdev) {
+ dev_err(&adapter->pdev->dev, "Net device Info\n");
+ printk(KERN_ERR "Device Name state "
+ "trans_start last_rx\n");
+ printk(KERN_ERR "%-15s %016lX %016lX %016lX\n",
+ netdev->name,
+ netdev->state,
+ netdev->trans_start,
+ netdev->last_rx);
+ }
+
+ /* Print Registers */
+ if ((dump_flag & E1000_DUMP_REGS) == 0)
+ goto tx_ring_summary;
+
+ dev_err(&adapter->pdev->dev, "Register Dump\n");
+
+#define E1000_RDFH 0x02410
+#define E1000_RDFT 0x02418
+#define E1000_RDFHS 0x02420
+#define E1000_RDFTS 0x02428
+#define E1000_RDFPC 0x02430
+
+#define E1000_TDFH 0x03410
+#define E1000_TDFT 0x03418
+#define E1000_TDFHS 0x03420
+#define E1000_TDFTS 0x03428
+#define E1000_TDFPC 0x03430
+
+ printk(KERN_ERR " Register Name [value ]\n");
+ for (reg = 0; reg < 0x04000; reg += sizeof(u32)) {
+ switch (reg & 0xffffffff) {
+
+ /* General Registers */
+ case E1000_CTRL:
+ sprintf(rname, "CTRL"); break;
+ case E1000_STATUS:
+ sprintf(rname, "STATUS"); break;
+ case E1000_CTRL_EXT:
+ sprintf(rname, "CTRL_EXT"); break;
+
+ /* Interrupt Registers*/
+ case E1000_ICR:
+ sprintf(rname, "ICR"); break;
+
+ /* RX */
+ case E1000_RCTL:
+ sprintf(rname, "RCTL"); break;
+ case E1000_RDLEN:
+ sprintf(rname, "RDLEN"); break;
+ case E1000_RDH:
+ sprintf(rname, "RDH"); break;
+ case E1000_RDT:
+ sprintf(rname, "RDT"); break;
+ case E1000_RDTR:
+ sprintf(rname, "RDTR"); break;
+ case E1000_RXDCTL(0):
+ sprintf(rname, "RXDCTL[0]"); break;
+ case E1000_ERT:
+ sprintf(rname, "ERT"); break;
+ case E1000_RDBAL:
+ sprintf(rname, "RDBAL"); break;
+ case E1000_RDBAH:
+ sprintf(rname, "RDBAH"); break;
+ case E1000_RDFH:
+ sprintf(rname, "RDFH"); break;
+ case E1000_RDFT:
+ sprintf(rname, "RDFT"); break;
+ case E1000_RDFHS:
+ sprintf(rname, "RDFHS"); break;
+ case E1000_RDFTS:
+ sprintf(rname, "RDFTS"); break;
+ case E1000_RDFPC:
+ sprintf(rname, "RDFPC"); break;
+
+ /* TX */
+ case E1000_TCTL:
+ sprintf(rname, "TCTL"); break;
+ case E1000_TDBAL:
+ sprintf(rname, "TDBAL"); break;
+ case E1000_TDBAH:
+ sprintf(rname, "TDBAH"); break;
+ case E1000_TDLEN:
+ sprintf(rname, "TDLEN"); break;
+ case E1000_TDH:
+ sprintf(rname, "TDH"); break;
+ case E1000_TDT:
+ sprintf(rname, "TDT"); break;
+ case E1000_TIDV:
+ sprintf(rname, "TIDV"); break;
+ case E1000_TXDCTL(0):
+ sprintf(rname, "TXDCTL[0-1]");
+ printk(KERN_ERR "%-15s ", rname);
+ for (n = 0; n < 2; n++)
+ printk("%08x ", readl(hw->hw_addr +
+ (reg & 0xffffffff)));
+ printk("\n");
+ continue;
+ case E1000_TADV:
+ sprintf(rname, "TADV"); break;
+ case E1000_TARC(0):
+ sprintf(rname, "TARC[0-1]");
+ printk(KERN_ERR "%-15s ", rname);
+ for (n = 0; n < 2; n++)
+ printk("%08x ", readl(hw->hw_addr +
+ (reg & 0xffffffff)));
+ printk("\n");
+ continue;
+ case E1000_TDFH:
+ sprintf(rname, "TDFH"); break;
+ case E1000_TDFT:
+ sprintf(rname, "TDFT"); break;
+ case E1000_TDFHS:
+ sprintf(rname, "TDFHS"); break;
+ case E1000_TDFTS:
+ sprintf(rname, "TDFTS"); break;
+ case E1000_TDFPC:
+ sprintf(rname, "TDFPC"); break;
+
+ default:
+ continue;
+ }
+ printk(KERN_ERR "%-15s %08x\n", rname,
+ readl(hw->hw_addr + (reg & 0xffffffff)));
+ }
+
+ /* Print TX Ring Summary */
+tx_ring_summary:
+ if (!netdev || !netif_running(netdev))
+ goto exit;
+
+ dev_err(&adapter->pdev->dev, "TX Rings Summary\n");
+ printk(KERN_ERR "Queue [NTU] [NTC] [bi(ntc)->dma ]"
+ " leng ntw timestamp\n");
+ buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
+ printk(KERN_ERR " %5d %5X %5X %016llX %04X %3X %016llX\n",
+ 0, 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 ((dump_flag & E1000_DUMP_TX_RINGS) == 0)
+ goto rx_ring_summary;
+
+ dev_err(&adapter->pdev->dev, "TX Rings Dump\n");
+
+ /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
+ *
+ * Legacy Transmit Descriptor
+ * +--------------------------------------------------------------+
+ * 0 | Buffer Address [63:0] (Reserved on Write Back) |
+ * +--------------------------------------------------------------+
+ * 8 | Special | CSS | Status | CMD | CSO | Length |
+ * +--------------------------------------------------------------+
+ * 63 48 47 36 35 32 31 24 23 16 15 0
+ *
+ * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
+ * 63 48 47 40 39 32 31 16 15 8 7 0
+ * +----------------------------------------------------------------+
+ * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
+ * +----------------------------------------------------------------+
+ * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
+ * +----------------------------------------------------------------+
+ * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
+ *
+ * Extended Data Descriptor (DTYP=0x1)
+ * +----------------------------------------------------------------+
+ * 0 | Buffer Address [63:0] |
+ * +----------------------------------------------------------------+
+ * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
+ * +----------------------------------------------------------------+
+ * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
+ */
+ printk(KERN_ERR "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
+ " [bi->dma ] leng ntw timestamp bi->skb "
+ "<-- Legacy format\n");
+ printk(KERN_ERR "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
+ " [bi->dma ] leng ntw timestamp bi->skb "
+ "<-- Ext Context format\n");
+ printk(KERN_ERR "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
+ " [bi->dma ] leng ntw timestamp bi->skb "
+ "<-- Ext Data format\n");
+ for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
+ tx_desc = E1000_TX_DESC(*tx_ring, i);
+ buffer_info = &tx_ring->buffer_info[i];
+ u0 = (struct my_u0 *)tx_desc;
+ printk(KERN_ERR "T%c[0x%03X] %016llX %016llX %016llX "
+ "%04X %3X %016llX %p",
+ (!(le64_to_cpu(u0->b) & (1<<29)) ? 'l' :
+ ((le64_to_cpu(u0->b) & (1<<20)) ? 'd' : 'c')), 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(" NTC/U\n");
+ else if (i == tx_ring->next_to_use)
+ printk(" NTU\n");
+ else if (i == tx_ring->next_to_clean)
+ printk(" NTC\n");
+ else
+ printk("\n");
+
+ if ((dump_flag & E1000_DUMP_BUFFERS) && buffer_info->dma != 0)
+ hexdump(buffer_info->dma, buffer_info->length);
+ }
+
+ /* Print RX Rings Summary */
+rx_ring_summary:
+ dev_err(&adapter->pdev->dev, "RX Rings Summary\n");
+ printk(KERN_ERR "Queue [NTU] [NTC]\n");
+ printk(KERN_ERR " %5d %5X %5X\n", 0,
+ rx_ring->next_to_use, rx_ring->next_to_clean);
+
+ /* Print RX Rings */
+ if ((dump_flag & E1000_DUMP_RX_RINGS) == 0)
+ goto exit;
+
+ dev_err(&adapter->pdev->dev, "RX Rings Dump\n");
+ switch (adapter->rx_ps_pages) {
+ case 1:
+ case 2:
+ case 3:
+ /* [Extended] Packet Split Receive Descriptor Format
+ *
+ * +-----------------------------------------------------+
+ * 0 | Buffer Address 0 [63:0] |
+ * +-----------------------------------------------------+
+ * 8 | Buffer Address 1 [63:0] |
+ * +-----------------------------------------------------+
+ * 16 | Buffer Address 2 [63:0] |
+ * +-----------------------------------------------------+
+ * 24 | Buffer Address 3 [63:0] |
+ * +-----------------------------------------------------+
+ */
+ printk(KERN_ERR "R [desc] [buffer 0 63:0 ] "
+ "[buffer 1 63:0 ] "
+ "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
+ "[bi->skb] <-- Ext Pkt Split format\n");
+ /* [Extended] Receive Descriptor (Write-Back) Format
+ *
+ * 63 48 47 32 31 13 12 8 7 4 3 0
+ * +------------------------------------------------------+
+ * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
+ * | Checksum | Ident | | Queue | | Type |
+ * +------------------------------------------------------+
+ * 8 | VLAN Tag | Length | Extended Error | Extended Status |
+ * +------------------------------------------------------+
+ * 63 48 47 32 31 20 19 0
+ */
+ printk(KERN_ERR "RWB[desc] [ck ipid mrqhsh] "
+ "[vl l0 ee es] "
+ "[ l3 l2 l1 hs] [reserved ] ---------------- "
+ "[bi->skb] <-- Ext Rx Write-Back format\n");
+ for (i = 0; i < rx_ring->count; i++) {
+ buffer_info = &rx_ring->buffer_info[i];
+ rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
+ u1 = (struct my_u1 *)rx_desc_ps;
+ staterr =
+ le32_to_cpu(rx_desc_ps->wb.middle.status_error);
+ if (staterr & E1000_RXD_STAT_DD) {
+ /* Descriptor Done */
+ printk(KERN_ERR "RWB[0x%03X] %016llX "
+ "%016llX %016llX %016llX "
+ "---------------- %p", i,
+ le64_to_cpu(u1->a),
+ le64_to_cpu(u1->b),
+ le64_to_cpu(u1->c),
+ le64_to_cpu(u1->d),
+ buffer_info->skb);
+ } else {
+ printk(KERN_ERR "R [0x%03X] %016llX "
+ "%016llX %016llX %016llX %016llX %p", i,
+ le64_to_cpu(u1->a),
+ le64_to_cpu(u1->b),
+ le64_to_cpu(u1->c),
+ le64_to_cpu(u1->d),
+ (u64)buffer_info->dma,
+ buffer_info->skb);
+
+ if (dump_flag & E1000_DUMP_BUFFERS)
+ hexdump(buffer_info->dma,
+ adapter->rx_ps_bsize0);
+ }
+
+ if (i == rx_ring->next_to_use)
+ printk(" NTU\n");
+ else if (i == rx_ring->next_to_clean)
+ printk(" NTC\n");
+ else
+ printk("\n");
+ }
+ break;
+ default:
+ case 0:
+ /* Legacy Receive Descriptor Format
+ *
+ * +-----------------------------------------------------+
+ * | Buffer Address [63:0] |
+ * +-----------------------------------------------------+
+ * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
+ * +-----------------------------------------------------+
+ * 63 48 47 40 39 32 31 16 15 0
+ */
+ printk(KERN_ERR "Rl[desc] [address 63:0 ] "
+ "[vl er S cks ln] [bi->dma ] [bi->skb] "
+ "<-- Legacy format\n");
+ for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
+ rx_desc = E1000_RX_DESC(*rx_ring, i);
+ buffer_info = &rx_ring->buffer_info[i];
+ u0 = (struct my_u0 *)rx_desc;
+ printk(KERN_ERR "Rl[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 (i == rx_ring->next_to_use)
+ printk(" NTU\n");
+ else if (i == rx_ring->next_to_clean)
+ printk(" NTC\n");
+ else
+ printk("\n");
+
+ if (dump_flag & E1000_DUMP_BUFFERS)
+ hexdump(buffer_info->dma,
+ adapter->rx_buffer_len);
+ }
+ }
+
+exit:
+ return;
+}
+
/**
* e1000_desc_unused - calculate if we have unused descriptors
**/
@@ -4257,6 +4642,7 @@ static void e1000_reset_task(struct work
struct e1000_adapter *adapter;
adapter = container_of(work, struct e1000_adapter, reset_task);
+ e1000e_dump(adapter);
e1000e_reinit_locked(adapter);
}
--
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