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Date: Tue, 9 Jun 2015 18:44:46 +0530
From: Praveen Madhavan <praveenm@...lsio.com>
To: netdev@...r.kernel.org, linux-scsi@...r.kernel.org
Cc: davem@...emloft.net, JBottomley@...allels.com,
hariprasad@...lsio.com, praveenm@...lsio.com, varun@...lsio.com,
rajesh.kumar@...lsio.com
Subject: [PATCH 3/3] csiostor:Adds debugfs support.
This patch adds debugfs support to dump adapter log, adapter queues,
and fcoe DDP stats.
Signed-off-by: Praveen Madhavan <praveenm@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 1 +
drivers/scsi/csiostor/Makefile | 2 +-
drivers/scsi/csiostor/csio_debugfs.c | 1100 ++++++++++++++++++++++++++
3 files changed, 1102 insertions(+), 1 deletion(-)
create mode 100644 drivers/scsi/csiostor/csio_debugfs.c
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
index af3462d..cb8b161 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
@@ -1442,6 +1442,7 @@
#define TP_MIB_FCOE_DDP_0_A 0x48
#define TP_MIB_FCOE_DROP_0_A 0x4c
#define TP_MIB_FCOE_BYTE_0_HI_A 0x50
+#define TP_MIB_FCOE_BYTE_0_LO_A 0x51
#define TP_MIB_OFD_VLN_DROP_0_A 0x58
#define TP_MIB_USM_PKTS_A 0x5c
#define TP_MIB_RQE_DFR_PKT_A 0x64
diff --git a/drivers/scsi/csiostor/Makefile b/drivers/scsi/csiostor/Makefile
index 3681a3f..7799537 100644
--- a/drivers/scsi/csiostor/Makefile
+++ b/drivers/scsi/csiostor/Makefile
@@ -9,4 +9,4 @@ obj-$(CONFIG_SCSI_CHELSIO_FCOE) += csiostor.o
csiostor-objs := csio_attr.o csio_init.o csio_lnode.o csio_scsi.o \
csio_hw.o csio_hw_t5.o csio_isr.o \
- csio_mb.o csio_rnode.o csio_wr.o
+ csio_mb.o csio_rnode.o csio_wr.o csio_debugfs.o
diff --git a/drivers/scsi/csiostor/csio_debugfs.c b/drivers/scsi/csiostor/csio_debugfs.c
new file mode 100644
index 0000000..1ed6235
--- /dev/null
+++ b/drivers/scsi/csiostor/csio_debugfs.c
@@ -0,0 +1,1100 @@
+/*
+ * This file is part of the Chelsio FCoE driver for Linux.
+ *
+ * Copyright (c) 2008-2015 Chelsio Communications, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/aer.h>
+#include <linux/mm.h>
+#include <linux/notifier.h>
+#include <linux/kdebug.h>
+#include <linux/seq_file.h>
+#include <linux/debugfs.h>
+#include <linux/string.h>
+#include <linux/export.h>
+#include <linux/delay.h>
+
+#include "t4fw_api.h"
+#include "csio_init.h"
+#include "csio_defs.h"
+#include "csio_hw.h"
+
+static struct dentry *csio_debugfs_root;
+
+#define DEFINE_SIMPLE_DEBUGFS_FILE(name) \
+static int name##_open(struct inode *inode, struct file *file) \
+{ \
+ return single_open(file, name##_show, inode->i_private); \
+} \
+static const struct file_operations name##_fops = { \
+ .owner = THIS_MODULE, \
+ .open = name##_open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release \
+}
+
+struct csio_debugfs_entry {
+ const char *name;
+ const struct file_operations *ops;
+ umode_t mode;
+ unsigned char data;
+};
+
+struct seq_tab {
+ int (*show)(struct seq_file *seq, void *v, int idx);
+ unsigned int rows; /* # of entries */
+ unsigned char width; /* size in bytes of each entry */
+ unsigned char skip_first; /* whether the first line is a header */
+ char data[0]; /* the table data */
+};
+
+struct tp_fcoe_stats {
+ uint32_t frames_ddp;
+ uint32_t frames_drop;
+ uint64_t octets_ddp;
+};
+
+/*
+ * Information gathered by Device Log Open routine for the display routine.
+ */
+struct devlog_info {
+ unsigned int nentries; /* number of entries in log[] */
+ unsigned int first; /* first [temporal] entry in log[] */
+ struct fw_devlog_e log[0]; /* Firmware Device Log */
+};
+
+/*
+ * Firmware Device Log dump.
+ */
+static const char * const devlog_level_strings[] = {
+ [FW_DEVLOG_LEVEL_EMERG] = "EMERG",
+ [FW_DEVLOG_LEVEL_CRIT] = "CRIT",
+ [FW_DEVLOG_LEVEL_ERR] = "ERR",
+ [FW_DEVLOG_LEVEL_NOTICE] = "NOTICE",
+ [FW_DEVLOG_LEVEL_INFO] = "INFO",
+ [FW_DEVLOG_LEVEL_DEBUG] = "DEBUG"
+};
+
+static const char * const devlog_facility_strings[] = {
+ [FW_DEVLOG_FACILITY_CORE] = "CORE",
+ [FW_DEVLOG_FACILITY_SCHED] = "SCHED",
+ [FW_DEVLOG_FACILITY_TIMER] = "TIMER",
+ [FW_DEVLOG_FACILITY_RES] = "RES",
+ [FW_DEVLOG_FACILITY_HW] = "HW",
+ [FW_DEVLOG_FACILITY_FLR] = "FLR",
+ [FW_DEVLOG_FACILITY_DMAQ] = "DMAQ",
+ [FW_DEVLOG_FACILITY_PHY] = "PHY",
+ [FW_DEVLOG_FACILITY_MAC] = "MAC",
+ [FW_DEVLOG_FACILITY_PORT] = "PORT",
+ [FW_DEVLOG_FACILITY_VI] = "VI",
+ [FW_DEVLOG_FACILITY_FILTER] = "FILTER",
+ [FW_DEVLOG_FACILITY_ACL] = "ACL",
+ [FW_DEVLOG_FACILITY_TM] = "TM",
+ [FW_DEVLOG_FACILITY_QFC] = "QFC",
+ [FW_DEVLOG_FACILITY_DCB] = "DCB",
+ [FW_DEVLOG_FACILITY_ETH] = "ETH",
+ [FW_DEVLOG_FACILITY_OFLD] = "OFLD",
+ [FW_DEVLOG_FACILITY_RI] = "RI",
+ [FW_DEVLOG_FACILITY_ISCSI] = "ISCSI",
+ [FW_DEVLOG_FACILITY_FCOE] = "FCOE",
+ [FW_DEVLOG_FACILITY_FOISCSI] = "FOISCSI",
+ [FW_DEVLOG_FACILITY_FOFCOE] = "FOFCOE"
+};
+
+/* generic seq_file support for showing a table of size rows x width. */
+static void *seq_tab_get_idx(struct seq_tab *tb, loff_t pos)
+{
+ pos -= tb->skip_first;
+ return pos >= tb->rows ? NULL : &tb->data[pos * tb->width];
+}
+
+static void *seq_tab_start(struct seq_file *seq, loff_t *pos)
+{
+ struct seq_tab *tb = seq->private;
+
+ if (tb->skip_first && *pos == 0)
+ return SEQ_START_TOKEN;
+
+ return seq_tab_get_idx(tb, *pos);
+}
+
+static void *seq_tab_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ v = seq_tab_get_idx(seq->private, *pos + 1);
+ if (v)
+ ++*pos;
+ return v;
+}
+
+static void seq_tab_stop(struct seq_file *seq, void *v)
+{
+}
+
+static int seq_tab_show(struct seq_file *seq, void *v)
+{
+ const struct seq_tab *tb = seq->private;
+
+ return tb->show(seq, v, ((char *)v - tb->data) / tb->width);
+}
+
+static const struct seq_operations seq_tab_ops = {
+ .start = seq_tab_start,
+ .next = seq_tab_next,
+ .stop = seq_tab_stop,
+ .show = seq_tab_show
+};
+
+static struct seq_tab *seq_open_tab(struct file *f, unsigned int rows,
+ unsigned int width, unsigned int have_header,
+ int (*show)(struct seq_file *seq, void *v, int i))
+{
+ struct seq_tab *p;
+
+ p = __seq_open_private(f, &seq_tab_ops, sizeof(*p) + rows * width);
+ if (p) {
+ p->show = show;
+ p->rows = rows;
+ p->width = width;
+ p->skip_first = have_header != 0;
+ }
+ return p;
+}
+
+/*
+ * Trim the size of a seq_tab to the supplied number of rows. The operation is
+ * irreversible.
+ */
+static int seq_tab_trim(struct seq_tab *p, unsigned int new_rows)
+{
+ if (new_rows > p->rows)
+ return -EINVAL;
+ p->rows = new_rows;
+ return 0;
+}
+
+static inline int csio_hw_wait_op_done(struct csio_hw *hw, int reg,
+ uint32_t mask, int polarity, int attempts, int delay)
+{
+ return csio_hw_wait_op_done_val(hw, reg, mask, polarity, attempts,
+ delay, NULL);
+}
+
+/**
+ * csio_hw_read_indirect - read indirectly addressed registers
+ * @hw: the adapter
+ * @addr_reg: register holding the indirect address
+ * @data_reg: register holding the value of the indirect register
+ * @vals: where the read register values are stored
+ * @nregs: how many indirect registers to read
+ * @start_idx: index of first indirect register to read
+ *
+ * Reads registers that are accessed indirectly through an address/data
+ * register pair.
+ */
+static void csio_hw_read_indirect(struct csio_hw *hw, unsigned int addr_reg,
+ unsigned int data_reg, uint32_t *vals,
+ unsigned int nregs, unsigned int start_idx)
+{
+ while (nregs--) {
+ csio_wr_reg32(hw, start_idx, addr_reg);
+ *vals++ = csio_rd_reg32(hw, data_reg);
+ start_idx++;
+ }
+}
+
+/**
+ * csio_hw_mem_read - read EDC 0, EDC 1 or MC into buffer
+ * @hw: the HW module
+ * @mtype: memory type: MEM_EDC0, MEM_EDC1 or MEM_MC
+ * @addr: address within indicated memory type
+ * @len: amount of memory to read
+ * @buf: host memory buffer
+ *
+ * Reads an [almost] arbitrary memory region in the firmware: the
+ * firmware memory address, length and host buffer must be aligned on
+ * 32-bit boudaries. The memory is returned as a raw byte sequence from
+ * the firmware's memory. If this memory contains data structures which
+ * contain multi-byte integers, it's the callers responsibility to
+ * perform appropriate byte order conversions.
+ */
+static int
+csio_hw_mem_read(struct csio_hw *hw, int mtype, uint32_t addr, uint32_t len,
+ uint32_t *buf)
+{
+ uint32_t pos, start, end, offset;
+ int ret;
+
+ /*
+ * Argument sanity checks ...
+ */
+ if ((addr & 0x3) || (len & 0x3))
+ return -EINVAL;
+
+ /*
+ * The underlaying EDC/MC read routines read 64 bytes at a time so we
+ * need to round down the start and round up the end. We'll start
+ * copying out of the first line at (addr - start) a word at a time.
+ */
+ start = addr & ~(64-1);
+ end = (addr + len + 64-1) & ~(64-1);
+ offset = (addr - start)/sizeof(__be32);
+
+ for (pos = start; pos < end; pos += 64, offset = 0) {
+ uint32_t data[16];
+
+ /*
+ * Read the chip's memory block and bail if there's an error.
+ */
+ if (mtype == MEM_MC) {
+ ret = hw->chip_ops->chip_mc_read(hw, 0, pos,
+ (__be32 *)data, NULL);
+ } else {
+ ret = hw->chip_ops->chip_edc_read(hw, mtype, pos,
+ (__be32 *)data, NULL);
+ }
+
+ if (ret)
+ return ret;
+
+ /*
+ * Copy the data into the caller's memory buffer.
+ */
+ while (offset < 16 && len > 0) {
+ *buf++ = data[offset++];
+ len -= sizeof(uint32_t);
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * csio_hw_read_cimq_cfg - read CIM queue configuration
+ * @hw: the adapter
+ * @base: holds the queue base addresses in bytes
+ * @size: holds the queue sizes in bytes
+ * @thres: holds the queue full thresholds in bytes
+ *
+ * Returns the current configuration of the CIM queues, starting with
+ * the IBQs, then the OBQs.
+ */
+static void csio_hw_read_cimq_cfg(struct csio_hw *hw, uint16_t *base,
+ uint16_t *size, uint16_t *thres)
+{
+ unsigned int i, v;
+ int cim_num_obq = CIM_NUM_OBQ_T5;
+
+ for (i = 0; i < CIM_NUM_IBQ; i++) {
+ csio_wr_reg32(hw, IBQSELECT_F | QUENUMSELECT_V(i),
+ CIM_QUEUE_CONFIG_REF_A);
+ v = csio_rd_reg32(hw, CIM_QUEUE_CONFIG_CTRL_A);
+ /* value is in 256-byte units */
+ *base++ = CIMQBASE_G(v) * 256;
+ *size++ = CIMQSIZE_G(v) * 256;
+ *thres++ = QUEFULLTHRSH_G(v) * 8; /* 8-byte unit */
+ }
+ for (i = 0; i < cim_num_obq; i++) {
+ csio_wr_reg32(hw, OBQSELECT_F | QUENUMSELECT_V(i),
+ CIM_QUEUE_CONFIG_REF_A);
+ v = csio_rd_reg32(hw, CIM_QUEUE_CONFIG_CTRL_A);
+ /* value is in 256-byte units */
+ *base++ = CIMQBASE_G(v) * 256;
+ *size++ = CIMQSIZE_G(v) * 256;
+ }
+}
+
+/**
+ * csio_hw_read_cim_ibq - read the contents of a CIM inbound queue
+ * @hw: the adapter
+ * @qid: the queue index
+ * @data: where to store the queue contents
+ * @n: capacity of @data in 32-bit words
+ *
+ * Reads the contents of the selected CIM queue starting at address 0 up
+ * to the capacity of @data. @n must be a multiple of 4. Returns < 0 on
+ * error and the number of 32-bit words actually read on success.
+ */
+static int csio_hw_read_cim_ibq(struct csio_hw *hw, unsigned int qid,
+ uint32_t *data, size_t n)
+{
+ int i, err, attempts;
+ unsigned int addr;
+ const unsigned int nwords = CIM_IBQ_SIZE * 4;
+
+ if (qid > 5 || (n & 3))
+ return -EINVAL;
+
+ addr = qid * nwords;
+ if (n > nwords)
+ n = nwords;
+
+ /* It might take 3-10ms before the IBQ debug read access is allowed.
+ * Wait for 1 Sec with a delay of 1 usec.
+ */
+ attempts = 1000000;
+
+ for (i = 0; i < n; i++, addr++) {
+ csio_wr_reg32(hw, IBQDBGADDR_V(addr) | IBQDBGEN_F,
+ CIM_IBQ_DBG_CFG_A);
+ err = csio_hw_wait_op_done(hw, CIM_IBQ_DBG_CFG_A, IBQDBGBUSY_F,
+ 0, attempts, 1);
+ if (err)
+ return err;
+ *data++ = csio_rd_reg32(hw, CIM_IBQ_DBG_DATA_A);
+ }
+ csio_wr_reg32(hw, 0, CIM_IBQ_DBG_CFG_A);
+ return i;
+}
+
+/**
+ * csio_hw_read_cim_obq - read the contents of a CIM outbound queue
+ * @hw: the adapter
+ * @qid: the queue index
+ * @data: where to store the queue contents
+ * @n: capacity of @data in 32-bit words
+ *
+ * Reads the contents of the selected CIM queue starting at address 0 up
+ * to the capacity of @data. @n must be a multiple of 4. Returns < 0 on
+ * error and the number of 32-bit words actually read on success.
+ */
+static int csio_hw_read_cim_obq(struct csio_hw *hw, unsigned int qid,
+ uint32_t *data, size_t n)
+{
+ int i, err;
+ unsigned int addr, v, nwords;
+ int cim_num_obq = CIM_NUM_OBQ_T5;
+
+ if ((qid > (cim_num_obq - 1)) || (n & 3))
+ return -EINVAL;
+
+ csio_wr_reg32(hw, OBQSELECT_F | QUENUMSELECT_V(qid),
+ CIM_QUEUE_CONFIG_REF_A);
+ v = csio_rd_reg32(hw, CIM_QUEUE_CONFIG_CTRL_A);
+
+ addr = CIMQBASE_G(v) * 64; /* muliple of 256 -> muliple of 4 */
+ nwords = CIMQSIZE_G(v) * 64; /* same */
+ if (n > nwords)
+ n = nwords;
+
+ for (i = 0; i < n; i++, addr++) {
+ csio_wr_reg32(hw, OBQDBGADDR_V(addr) | OBQDBGEN_F,
+ CIM_OBQ_DBG_CFG_A);
+ err = csio_hw_wait_op_done(hw, CIM_OBQ_DBG_CFG_A, OBQDBGBUSY_F,
+ 0, 2, 1);
+ if (err)
+ return err;
+ *data++ = csio_rd_reg32(hw, CIM_OBQ_DBG_DATA_A);
+ }
+ csio_wr_reg32(hw, 0, CIM_OBQ_DBG_CFG_A);
+ return i;
+}
+
+/**
+ * csio_hw_cim_read - read a block from CIM internal address space
+ * @hw: the adapter
+ * @addr: the start address within the CIM address space
+ * @n: number of words to read
+ * @valp: where to store the result
+ *
+ * Reads a block of 4-byte words from the CIM intenal address space.
+ */
+static int csio_hw_cim_read(struct csio_hw *hw, unsigned int addr,
+ unsigned int n, unsigned int *valp)
+{
+ int ret = 0;
+
+ if (csio_rd_reg32(hw, CIM_HOST_ACC_CTRL_A) & HOSTBUSY_F)
+ return -EBUSY;
+
+ for ( ; !ret && n--; addr += 4) {
+ csio_wr_reg32(hw, addr, CIM_HOST_ACC_CTRL_A);
+ ret = csio_hw_wait_op_done(hw, CIM_HOST_ACC_CTRL_A, HOSTBUSY_F,
+ 0, 5, 2);
+
+ if (!ret)
+ *valp++ = csio_rd_reg32(hw, CIM_HOST_ACC_DATA_A);
+ }
+
+ return ret;
+}
+
+/**
+ * csio_hw_cim_write - write a block into CIM internal address space
+ * @hw: the adapter
+ * @addr: the start address within the CIM address space
+ * @n: number of words to write
+ * @valp: set of values to write
+ *
+ * Writes a block of 4-byte words into the CIM intenal address space.
+ */
+static int csio_hw_cim_write(struct csio_hw *hw, unsigned int addr,
+ unsigned int n, const unsigned int *valp)
+{
+ int ret = 0;
+
+ if (csio_rd_reg32(hw, CIM_HOST_ACC_CTRL_A) & HOSTBUSY_F)
+ return -EBUSY;
+
+ for ( ; !ret && n--; addr += 4) {
+ csio_wr_reg32(hw, *valp++, CIM_HOST_ACC_DATA_A);
+ csio_wr_reg32(hw, addr | HOSTWRITE_F, CIM_HOST_ACC_CTRL_A);
+ ret = csio_hw_wait_op_done(hw, CIM_HOST_ACC_CTRL_A, HOSTBUSY_F,
+ 0, 5, 2);
+ }
+ return ret;
+}
+
+static int csio_hw_cim_write1(struct csio_hw *hw, unsigned int addr,
+ unsigned int val)
+{
+ return csio_hw_cim_write(hw, addr, 1, &val);
+}
+
+/**
+ * csio_hw_cim_read_la - read CIM LA capture buffer
+ * @hw: the adapter
+ * @la_buf: where to store the LA data
+ * @wrptr: the HW write pointer within the capture buffer
+ *
+ * Reads the contents of the CIM LA buffer with the most recent entry at
+ * the end of the returned data and with the entry at @wrptr first.
+ * We try to leave the LA in the running state we find it in.
+ */
+static int csio_hw_cim_read_la(struct csio_hw *hw, uint32_t *la_buf,
+ unsigned int *wrptr)
+{
+ int i, ret;
+ unsigned int cfg, val, idx;
+
+ ret = csio_hw_cim_read(hw, UP_UP_DBG_LA_CFG_A, 1, &cfg);
+ if (ret)
+ return ret;
+
+ if (cfg & UPDBGLAEN_F) { /* LA is running, freeze it */
+ ret = csio_hw_cim_write1(hw, UP_UP_DBG_LA_CFG_A, 0);
+ if (ret)
+ return ret;
+ }
+
+ ret = csio_hw_cim_read(hw, UP_UP_DBG_LA_CFG_A, 1, &val);
+ if (ret)
+ goto restart;
+
+ idx = UPDBGLAWRPTR_G(val);
+ if (wrptr)
+ *wrptr = idx;
+
+ for (i = 0; i < hw->params.cim_la_size; i++) {
+ ret = csio_hw_cim_write1(hw, UP_UP_DBG_LA_CFG_A,
+ UPDBGLARDPTR_V(idx) | UPDBGLARDEN_F);
+ if (ret)
+ break;
+ ret = csio_hw_cim_read(hw, UP_UP_DBG_LA_CFG_A, 1, &val);
+ if (ret)
+ break;
+ if (val & UPDBGLARDEN_F) {
+ ret = -ETIMEDOUT;
+ break;
+ }
+ ret = csio_hw_cim_read(hw, UP_UP_DBG_LA_DATA_A, 1, &la_buf[i]);
+ if (ret)
+ break;
+ idx = (idx + 1) & UPDBGLARDPTR_M;
+ }
+restart:
+ if (cfg & UPDBGLAEN_F) {
+ int r = csio_hw_cim_write1(hw, UP_UP_DBG_LA_CFG_A,
+ cfg & ~UPDBGLARDEN_F);
+ if (!ret)
+ ret = r;
+ }
+ return ret;
+}
+
+static int cim_la_show(struct seq_file *seq, void *v, int idx)
+{
+ if (v == SEQ_START_TOKEN)
+ seq_puts(seq, "Status Data PC LS0Stat LS0Addr "
+ " LS0Data\n");
+ else {
+ const uint32_t *p = v;
+
+ seq_printf(seq,
+ " %02x %x%07x %x%07x %08x %08x %08x%08x%08x%08x\n",
+ (p[0] >> 4) & 0xff, p[0] & 0xf, p[1] >> 4,
+ p[1] & 0xf, p[2] >> 4, p[2] & 0xf, p[3], p[4], p[5],
+ p[6], p[7]);
+ }
+ return 0;
+}
+
+static int cim_la_show_3in1(struct seq_file *seq, void *v, int idx)
+{
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(seq, "Status Data PC\n");
+ } else {
+ const uint32_t *p = v;
+
+ seq_printf(seq, " %02x %08x %08x\n", p[5] & 0xff, p[6],
+ p[7]);
+ seq_printf(seq, " %02x %02x%06x %02x%06x\n",
+ (p[3] >> 8) & 0xff, p[3] & 0xff, p[4] >> 8,
+ p[4] & 0xff, p[5] >> 8);
+ seq_printf(seq, " %02x %x%07x %x%07x\n", (p[0] >> 4) & 0xff,
+ p[0] & 0xf, p[1] >> 4, p[1] & 0xf, p[2] >> 4);
+ }
+ return 0;
+}
+
+static int cim_la_open(struct inode *inode, struct file *file)
+{
+ int ret;
+ unsigned int cfg;
+ struct seq_tab *p;
+ struct csio_hw *hw = inode->i_private;
+
+ ret = csio_hw_cim_read(hw, UP_UP_DBG_LA_CFG_A, 1, &cfg);
+ if (ret)
+ return ret;
+
+ p = seq_open_tab(file, hw->params.cim_la_size / 8, 8 * sizeof(uint32_t),
+ 1, cfg & UPDBGLACAPTPCONLY_F ? cim_la_show_3in1 : cim_la_show);
+ if (!p)
+ return -ENOMEM;
+
+ ret = csio_hw_cim_read_la(hw, (uint32_t *)p->data, NULL);
+ if (ret)
+ seq_release_private(inode, file);
+ return ret;
+}
+
+static const struct file_operations cim_la_fops = {
+ .owner = THIS_MODULE,
+ .open = cim_la_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_private
+};
+
+static int cim_qcfg_show(struct seq_file *seq, void *v)
+{
+ static const char * const qname[] = {
+ "TP0", "TP1", "ULP", "SGE0", "SGE1", "NC-SI",
+ "ULP0", "ULP1", "ULP2", "ULP3", "SGE", "NC-SI",
+ "SGE0-RX", "SGE1-RX"
+ };
+
+ int i;
+ struct csio_hw *hw = seq->private;
+ uint16_t base[CIM_NUM_IBQ + CIM_NUM_OBQ_T5];
+ uint16_t size[CIM_NUM_IBQ + CIM_NUM_OBQ_T5];
+ uint32_t stat[(4 * (CIM_NUM_IBQ + CIM_NUM_OBQ_T5))];
+ uint16_t thres[CIM_NUM_IBQ];
+ uint32_t obq_wr_t5[2 * CIM_NUM_OBQ_T5], *wr;
+ uint32_t *p = stat;
+ int cim_num_obq = CIM_NUM_OBQ_T5;
+
+ i = csio_hw_cim_read(hw, UP_IBQ_0_SHADOW_RDADDR_A, ARRAY_SIZE(stat),
+ stat);
+ if (!i) {
+ i = csio_hw_cim_read(hw, UP_OBQ_0_SHADOW_REALADDR_A,
+ ARRAY_SIZE(obq_wr_t5), obq_wr_t5);
+ wr = obq_wr_t5;
+ }
+ if (i)
+ return i;
+
+ csio_hw_read_cimq_cfg(hw, base, size, thres);
+
+ seq_printf(seq,
+ " Queue Base Size Thres RdPtr WrPtr SOP EOP Avail\n");
+ for (i = 0; i < CIM_NUM_IBQ; i++, p += 4)
+ seq_printf(seq, "%7s %5x %5u %5u %6x %4x %4u %4u %5u\n",
+ qname[i], base[i], size[i], thres[i],
+ IBQRDADDR_G(p[0]), IBQWRADDR_G(p[1]),
+ QUESOPCNT_G(p[3]), QUEEOPCNT_G(p[3]),
+ QUEREMFLITS_G(p[2]) * 16);
+ for ( ; i < CIM_NUM_IBQ + cim_num_obq; i++, p += 4, wr += 2)
+ seq_printf(seq, "%7s %5x %5u %12x %4x %4u %4u %5u\n",
+ qname[i], base[i], size[i],
+ QUERDADDR_G(p[0]) & 0x3fff, wr[0] - base[i],
+ QUESOPCNT_G(p[3]), QUEEOPCNT_G(p[3]),
+ QUEREMFLITS_G(p[2]) * 16);
+ return 0;
+}
+
+DEFINE_SIMPLE_DEBUGFS_FILE(cim_qcfg);
+
+static int cimq_show(struct seq_file *seq, void *v, int idx)
+{
+ const uint32_t *p = v;
+
+ seq_printf(seq, "%#06x: %08x %08x %08x %08x\n", idx * 16, p[0], p[1],
+ p[2], p[3]);
+ return 0;
+}
+
+static int cim_ibq_open(struct inode *inode, struct file *file)
+{
+ int ret;
+ struct seq_tab *p;
+ unsigned int qid = (uintptr_t)inode->i_private & 7;
+ struct csio_hw *hw = inode->i_private - qid;
+
+ p = seq_open_tab(file, CIM_IBQ_SIZE, 4 * sizeof(uint32_t),
+ 0, cimq_show);
+ if (!p)
+ return -ENOMEM;
+
+ ret = csio_hw_read_cim_ibq(hw, qid, (uint32_t *)p->data,
+ CIM_IBQ_SIZE * 4);
+ if (ret < 0)
+ seq_release_private(inode, file);
+ else
+ ret = 0;
+ return ret;
+}
+
+static const struct file_operations cim_ibq_fops = {
+ .owner = THIS_MODULE,
+ .open = cim_ibq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_private
+};
+
+static int cim_obq_open(struct inode *inode, struct file *file)
+{
+ int ret;
+ struct seq_tab *p;
+ unsigned int qid = (uintptr_t)inode->i_private & 7;
+ struct csio_hw *hw = inode->i_private - qid;
+
+ p = seq_open_tab(file, 6 * CIM_OBQ_SIZE, 4 * sizeof(uint32_t),
+ 0, cimq_show);
+ if (!p)
+ return -ENOMEM;
+
+ ret = csio_hw_read_cim_obq(hw, qid, (uint32_t *)p->data,
+ 6 * CIM_OBQ_SIZE * 4);
+ if (ret < 0) {
+ seq_release_private(inode, file);
+ } else {
+ seq_tab_trim(p, ret / 4);
+ ret = 0;
+ }
+ return ret;
+}
+
+static const struct file_operations cim_obq_fops = {
+ .owner = THIS_MODULE,
+ .open = cim_obq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_private
+};
+
+/**
+ * csio_hw_get_fcoe_stats - read TP's FCoE MIB counters for a port
+ * @adap: the adapter
+ * @idx: the port index
+ * @st: holds the counter values
+ *
+ * Returns the values of TP's FCoE counters for the selected port.
+ */
+static void csio_hw_get_fcoe_stats(struct csio_hw *hw, unsigned int idx,
+ struct tp_fcoe_stats *st)
+{
+ uint32_t val[2];
+
+ csio_hw_read_indirect(hw, TP_MIB_INDEX_A, TP_MIB_DATA_A,
+ &st->frames_ddp, 1, TP_MIB_FCOE_DDP_0_A + idx);
+ csio_hw_read_indirect(hw, TP_MIB_INDEX_A, TP_MIB_DATA_A,
+ &st->frames_drop, 1, TP_MIB_FCOE_DROP_0_A + idx);
+ csio_hw_read_indirect(hw, TP_MIB_INDEX_A, TP_MIB_DATA_A, val,
+ 2, TP_MIB_FCOE_BYTE_0_HI_A + 2 * idx);
+ st->octets_ddp = ((uint64_t)val[0] << 32) | val[1];
+}
+
+static int fcoe_stats_show(struct seq_file *seq, void *v)
+{
+ struct tp_fcoe_stats stats[4];
+ struct csio_hw *hw = seq->private;
+
+ spin_lock(&hw->stats_lock);
+ csio_hw_get_fcoe_stats(hw, 0, &stats[0]);
+ csio_hw_get_fcoe_stats(hw, 1, &stats[1]);
+ csio_hw_get_fcoe_stats(hw, 2, &stats[2]);
+ csio_hw_get_fcoe_stats(hw, 3, &stats[3]);
+ spin_unlock(&hw->stats_lock);
+
+ seq_puts(seq, " channel 0 "
+ "channel 1 channel 2 channel 3\n");
+ seq_printf(seq, "octetsDDP: %16llu %16llu %16llu %16llu\n",
+ stats[0].octets_ddp, stats[1].octets_ddp,
+ stats[2].octets_ddp, stats[3].octets_ddp);
+ seq_printf(seq, "framesDDP: %16u %16u %16u %16u\n",
+ stats[0].frames_ddp, stats[1].frames_ddp,
+ stats[2].frames_ddp, stats[3].frames_ddp);
+ seq_printf(seq, "framesDrop: %16u %16u %16u %16u\n",
+ stats[0].frames_drop, stats[1].frames_drop,
+ stats[2].frames_drop, stats[3].frames_drop);
+ return 0;
+}
+
+DEFINE_SIMPLE_DEBUGFS_FILE(fcoe_stats);
+
+/*
+ * Sequential File Operations for Device Log.
+ */
+static inline void *devlog_get_idx(struct devlog_info *dinfo, loff_t pos)
+{
+ if (pos > dinfo->nentries)
+ return NULL;
+
+ return (void *)(uintptr_t)(pos + 1);
+}
+
+static void *devlog_start(struct seq_file *seq, loff_t *pos)
+{
+ struct devlog_info *dinfo = seq->private;
+
+ return (*pos
+ ? devlog_get_idx(dinfo, *pos)
+ : SEQ_START_TOKEN);
+}
+
+static void *devlog_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct devlog_info *dinfo = seq->private;
+
+ (*pos)++;
+ return devlog_get_idx(dinfo, *pos);
+}
+
+static void devlog_stop(struct seq_file *seq, void *v)
+{
+}
+
+static int devlog_show(struct seq_file *seq, void *v)
+{
+ if (v == SEQ_START_TOKEN)
+ seq_printf(seq, "%10s %15s %8s %8s %s\n",
+ "Seq#", "Tstamp", "Level", "Facility", "Message");
+ else {
+ struct devlog_info *dinfo = seq->private;
+ int fidx = (uintptr_t)v - 2;
+ unsigned long index;
+ struct fw_devlog_e *e;
+
+ /*
+ * Get a pointer to the log entry to display. Skip unused log
+ * entries.
+ */
+ index = dinfo->first + fidx;
+ if (index >= dinfo->nentries)
+ index -= dinfo->nentries;
+ e = &dinfo->log[index];
+ if (e->timestamp == 0)
+ return 0;
+
+ /*
+ * Print the message. This depends on the firmware using
+ * exactly the same formating strings as the kernel so we may
+ * eventually have to put a format interpreter in here ...
+ */
+ seq_printf(seq, "%10d %15llu %8s %8s ",
+ e->seqno, e->timestamp,
+ (e->level < ARRAY_SIZE(devlog_level_strings)
+ ? devlog_level_strings[e->level]
+ : "UNKNOWN"),
+ (e->facility < ARRAY_SIZE(devlog_facility_strings)
+ ? devlog_facility_strings[e->facility]
+ : "UNKNOWN"));
+ seq_printf(seq, e->fmt, e->params[0], e->params[1],
+ e->params[2], e->params[3], e->params[4],
+ e->params[5], e->params[6], e->params[7]);
+ }
+
+ return 0;
+}
+
+static const struct seq_operations devlog_seq_ops = {
+ .start = devlog_start,
+ .next = devlog_next,
+ .stop = devlog_stop,
+ .show = devlog_show
+};
+
+/*
+ * Set up for reading the firmware's device log. We read the entire log here
+ * and then display it incrementally in devlog_show().
+ */
+static int devlog_open(struct inode *inode, struct file *file)
+{
+ struct csio_hw *hw = inode->i_private;
+ struct devlog_params *dparams = &hw->devlog;
+ struct devlog_info *dinfo;
+ unsigned int index;
+ u32 fseqno;
+ int ret;
+
+ /*
+ * If we don't know where the log is we can't do anything.
+ */
+ if (dparams->start == 0)
+ return -ENXIO;
+
+ /*
+ * Allocate the space to read in the firmware's device log and set up
+ * for the iterated call to our display function.
+ */
+ dinfo = __seq_open_private(file, &devlog_seq_ops,
+ sizeof(*dinfo) + dparams->size);
+ if (dinfo == NULL)
+ return -ENOMEM;
+
+ /*
+ * Record the basic log buffer information and read in the raw log.
+ */
+ dinfo->nentries = (dparams->size / sizeof(struct fw_devlog_e));
+ dinfo->first = 0;
+ ret = csio_hw_mem_read(hw, dparams->memtype, dparams->start,
+ dparams->size, (unsigned int *)dinfo->log);
+ if (ret < 0) {
+ seq_release_private(inode, file);
+ return ret;
+ }
+
+ /*
+ * Translate log multi-byte integral elements into host native format
+ * and determine where the first entry in the log is.
+ */
+ for (fseqno = ~((u32)0), index = 0; index < dinfo->nentries; index++) {
+ struct fw_devlog_e *e = &dinfo->log[index];
+ int i;
+ __u32 seqno;
+
+ if (e->timestamp == 0)
+ continue;
+
+ e->timestamp = (__force __be64)be64_to_cpu(e->timestamp);
+ seqno = be32_to_cpu(e->seqno);
+ for (i = 0; i < 8; i++)
+ e->params[i] =
+ (__force __be32)be32_to_cpu(e->params[i]);
+
+ if (seqno < fseqno) {
+ fseqno = seqno;
+ dinfo->first = index;
+ }
+ }
+
+ return 0;
+}
+
+static const struct file_operations devlog_fops = {
+ .owner = THIS_MODULE,
+ .open = devlog_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_private
+};
+
+static ssize_t
+csio_mem_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+ loff_t pos = *ppos;
+ loff_t avail = file_inode(file)->i_size;
+ unsigned int mem = (uintptr_t)file->private_data & 3;
+ struct csio_hw *hw = file->private_data - mem;
+
+ if (pos < 0)
+ return -EINVAL;
+ if (pos >= avail)
+ return 0;
+ if (count > avail - pos)
+ count = avail - pos;
+
+ while (count) {
+ size_t len;
+ int ret, ofst;
+ __be32 data[16];
+
+ if (mem == MEM_MC)
+ ret = hw->chip_ops->chip_mc_read(hw, 0, pos,
+ data, NULL);
+ else
+ ret = hw->chip_ops->chip_edc_read(hw, mem, pos,
+ data, NULL);
+ if (ret)
+ return ret;
+
+ ofst = pos % sizeof(data);
+ len = min(count, sizeof(data) - ofst);
+ if (copy_to_user(buf, (u8 *)data + ofst, len))
+ return -EFAULT;
+
+ buf += len;
+ pos += len;
+ count -= len;
+ }
+ count = pos - *ppos;
+ *ppos = pos;
+ return count;
+}
+
+static const struct file_operations csio_mem_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = csio_mem_read,
+ .llseek = default_llseek,
+};
+
+static void
+csio_crt_debugfs_file(struct csio_hw *hw, struct csio_debugfs_entry entry)
+{
+ debugfs_create_file_size(entry.name, entry.mode, hw->debugfs_root,
+ (void *)hw + entry.data, entry.ops, (5 << 20));
+}
+
+static void
+csio_add_debugfs_files(struct csio_hw *hw)
+{
+ int i;
+
+ static struct csio_debugfs_entry csio_debugfs_files[] = {
+ { "cim_la", &cim_la_fops, S_IRUSR, 0 },
+ { "cim_qcfg", &cim_qcfg_fops, S_IRUSR, 0 },
+ { "devlog", &devlog_fops, S_IRUSR, 0 },
+ { "ibq_tp0", &cim_ibq_fops, S_IRUSR, 0 },
+ { "ibq_tp1", &cim_ibq_fops, S_IRUSR, 1 },
+ { "ibq_ulp", &cim_ibq_fops, S_IRUSR, 2 },
+ { "ibq_sge0", &cim_ibq_fops, S_IRUSR, 3 },
+ { "ibq_sge1", &cim_ibq_fops, S_IRUSR, 4 },
+ { "ibq_ncsi", &cim_ibq_fops, S_IRUSR, 5 },
+ { "obq_ulp0", &cim_obq_fops, S_IRUSR, 0 },
+ { "obq_ulp1", &cim_obq_fops, S_IRUSR, 1 },
+ { "obq_ulp2", &cim_obq_fops, S_IRUSR, 2 },
+ { "obq_ulp3", &cim_obq_fops, S_IRUSR, 3 },
+ { "obq_sge", &cim_obq_fops, S_IRUSR, 4 },
+ { "obq_ncsi", &cim_obq_fops, S_IRUSR, 5 },
+ { "obq_sge_rx_q0", &cim_obq_fops, S_IRUSR, 6 },
+ { "obq_sge_rx_q1", &cim_obq_fops, S_IRUSR, 7 },
+ { "fcoe_stats", &fcoe_stats_fops, S_IRUSR, 0 },
+ };
+
+ for (i = 0; i < ARRAY_SIZE(csio_debugfs_files); i++)
+ csio_crt_debugfs_file(hw, csio_debugfs_files[i]);
+}
+
+void csio_add_debugfs_mem(struct csio_hw *hw, const char *name,
+ unsigned int idx, unsigned int size_mb)
+{
+ debugfs_create_file_size(name, S_IRUSR, hw->debugfs_root,
+ (void *)hw + idx, &csio_mem_debugfs_fops,
+ size_mb << 20);
+}
+
+static int csio_setup_debugfs(struct csio_hw *hw)
+{
+ int i;
+
+ if (IS_ERR_OR_NULL(hw->debugfs_root))
+ return -1;
+
+ /* debugfs support is best effort */
+ csio_add_debugfs_files(hw);
+
+ i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE_A);
+ if (i & EDRAM0_ENABLE_F)
+ csio_add_debugfs_mem(hw, "edc0", MEM_EDC0, 5);
+ if (i & EDRAM1_ENABLE_F)
+ csio_add_debugfs_mem(hw, "edc1", MEM_EDC1, 5);
+
+ hw->chip_ops->chip_dfs_create_ext_mem(hw);
+ return 0;
+}
+
+/*
+ * csio_dfs_create - Creates and sets up per-hw debugfs.
+ *
+ */
+int
+csio_dfs_create(struct csio_hw *hw)
+{
+ if (csio_debugfs_root) {
+ hw->debugfs_root = debugfs_create_dir(pci_name(hw->pdev),
+ csio_debugfs_root);
+ csio_setup_debugfs(hw);
+ }
+
+ return 0;
+}
+
+/*
+ * csio_dfs_destroy - Destroys per-hw debugfs.
+ */
+int
+csio_dfs_destroy(struct csio_hw *hw)
+{
+ debugfs_remove_recursive(hw->debugfs_root);
+
+ return 0;
+}
+
+/*
+ * csio_dfs_init - Debug filesystem initialization for the module.
+ *
+ */
+int
+csio_dfs_init(void)
+{
+ csio_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
+ if (!csio_debugfs_root)
+ pr_warn("Could not create debugfs entry, continuing\n");
+
+ return 0;
+}
+
+/*
+ * csio_dfs_exit - debugfs cleanup for the module.
+ */
+void
+csio_dfs_exit(void)
+{
+ debugfs_remove(csio_debugfs_root);
+}
--
2.0.2
--
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