[openib-general] [PATCH 8 of 18] ipath - sysfs and ipathfs support for core driver
Bryan O'Sullivan
bos at pathscale.com
Wed Mar 22 16:05:01 PST 2006
The ipathfs filesystem contains files that are not appropriate for
sysfs, because they contain binary data. The hierarchy is simple; the
top-level directory contains driver-wide attribute files, while numbered
subdirectories contain per-device attribute files.
Signed-off-by: Bryan O'Sullivan <bos at pathscale.com>
diff -r ca4e584c8901 -r 03375633b9c1 drivers/infiniband/hw/ipath/ipath_fs.c
--- /dev/null Thu Jan 1 00:00:00 1970 +0000
+++ b/drivers/infiniband/hw/ipath/ipath_fs.c Wed Mar 22 14:54:26 2006 -0800
@@ -0,0 +1,504 @@
+/*
+ * Copyright (c) 2006 PathScale, 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/version.h>
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/pagemap.h>
+#include <linux/init.h>
+#include <linux/namei.h>
+#include <linux/pci.h>
+
+#include "ipath_kernel.h"
+
+#define IPATHFS_MAGIC 0x726a77
+
+static int ipathfs_mknod(struct inode *dir, struct dentry *dentry,
+ int mode, struct file_operations *fop,
+ void *data)
+{
+ int error;
+ struct inode *inode = new_inode(dir->i_sb);
+
+ if (!inode) {
+ error = -EPERM;
+ goto bail;
+ }
+
+ inode->i_mode = mode;
+ inode->i_uid = 0;
+ inode->i_gid = 0;
+ inode->i_blksize = PAGE_CACHE_SIZE;
+ inode->i_blocks = 0;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->u.generic_ip = data;
+ if ((mode & S_IFMT) == S_IFDIR) {
+ inode->i_op = &simple_dir_inode_operations;
+ inode->i_nlink++;
+ dir->i_nlink++;
+ }
+
+ inode->i_fop = fop;
+
+ d_instantiate(dentry, inode);
+ error = 0;
+
+bail:
+ return error;
+}
+
+static int create_file(const char *name, mode_t mode,
+ struct dentry *parent, struct dentry **dentry,
+ struct file_operations *fop, void *data)
+{
+ int error;
+
+ *dentry = NULL;
+ mutex_lock(&parent->d_inode->i_mutex);
+ *dentry = lookup_one_len(name, parent, strlen(name));
+ if (!IS_ERR(dentry))
+ error = ipathfs_mknod(parent->d_inode, *dentry,
+ mode, fop, data);
+ else
+ error = PTR_ERR(dentry);
+ mutex_unlock(&parent->d_inode->i_mutex);
+
+ return error;
+}
+
+static ssize_t atomic_stats_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ return simple_read_from_buffer(buf, count, ppos, &ipath_stats,
+ sizeof ipath_stats);
+}
+
+static struct file_operations atomic_stats_ops = {
+ .read = atomic_stats_read,
+};
+
+#define NUM_COUNTERS sizeof(struct infinipath_counters) / sizeof(u64)
+
+static ssize_t atomic_counters_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ u64 counters[NUM_COUNTERS];
+ u16 i;
+ struct ipath_devdata *dd;
+
+ dd = file->f_dentry->d_inode->u.generic_ip;
+
+ for (i = 0; i < NUM_COUNTERS; i++)
+ counters[i] = ipath_snap_cntr(dd, i);
+
+ return simple_read_from_buffer(buf, count, ppos, counters,
+ sizeof counters);
+}
+
+static struct file_operations atomic_counters_ops = {
+ .read = atomic_counters_read,
+};
+
+static ssize_t atomic_node_info_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ u32 nodeinfo[10];
+ struct ipath_devdata *dd;
+
+ dd = file->f_dentry->d_inode->u.generic_ip;
+
+ nodeinfo[0] = /* BaseVersion is SMA */
+ /* ClassVersion is SMA */
+ (1 << 8) /* NodeType */
+ | (1 << 0); /* NumPorts */
+ nodeinfo[1] = (u32) (dd->ipath_guid >> 32);
+ nodeinfo[2] = (u32) (dd->ipath_guid & 0xffffffff);
+ /* PortGUID == SystemImageGUID for us */
+ nodeinfo[3] = nodeinfo[1];
+ /* PortGUID == SystemImageGUID for us */
+ nodeinfo[4] = nodeinfo[2];
+ /* PortGUID == NodeGUID for us */
+ nodeinfo[5] = nodeinfo[3];
+ /* PortGUID == NodeGUID for us */
+ nodeinfo[6] = nodeinfo[4];
+ nodeinfo[7] = (4 << 16) /* we support 4 pkeys */
+ | (dd->ipath_deviceid << 0);
+ /* our chip version as 16 bits major, 16 bits minor */
+ nodeinfo[8] = dd->ipath_minrev | (dd->ipath_majrev << 16);
+ nodeinfo[9] = (dd->ipath_unit << 24) | (dd->ipath_vendorid << 0);
+
+ return simple_read_from_buffer(buf, count, ppos, nodeinfo,
+ sizeof nodeinfo);
+}
+
+static struct file_operations atomic_node_info_ops = {
+ .read = atomic_node_info_read,
+};
+
+static ssize_t atomic_port_info_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ u32 portinfo[13];
+ u32 tmp, tmp2;
+ struct ipath_devdata *dd;
+
+ dd = file->f_dentry->d_inode->u.generic_ip;
+
+ /* so we only initialize non-zero fields. */
+ memset(portinfo, 0, sizeof portinfo);
+
+ /*
+ * Notimpl yet M_Key (64)
+ * Notimpl yet GID (64)
+ */
+
+ portinfo[4] = (dd->ipath_lid << 16);
+
+ /*
+ * Notimpl yet SMLID (should we store this in the driver, in case
+ * SMA dies?) CapabilityMask is 0, we don't support any of these
+ * DiagCode is 0; we don't store any diag info for now Notimpl yet
+ * M_KeyLeasePeriod (we don't support M_Key)
+ */
+
+ /* LocalPortNum is whichever port number they ask for */
+ portinfo[7] = (dd->ipath_unit << 24)
+ /* LinkWidthEnabled */
+ | (2 << 16)
+ /* LinkWidthSupported (really 2, but not IB valid) */
+ | (3 << 8)
+ /* LinkWidthActive */
+ | (2 << 0);
+ tmp = dd->ipath_lastibcstat & IPATH_IBSTATE_MASK;
+ tmp2 = 5;
+ if (tmp == IPATH_IBSTATE_INIT)
+ tmp = 2;
+ else if (tmp == IPATH_IBSTATE_ARM)
+ tmp = 3;
+ else if (tmp == IPATH_IBSTATE_ACTIVE)
+ tmp = 4;
+ else {
+ tmp = 0; /* down */
+ tmp2 = tmp & 0xf;
+ }
+
+ portinfo[8] = (1 << 28) /* LinkSpeedSupported */
+ | (tmp << 24) /* PortState */
+ | (tmp2 << 20) /* PortPhysicalState */
+ | (2 << 16)
+
+ /* LinkDownDefaultState */
+ /* M_KeyProtectBits == 0 */
+ /* NotImpl yet LMC == 0 (we can support all values) */
+ | (1 << 4) /* LinkSpeedActive */
+ | (1 << 0); /* LinkSpeedEnabled */
+ switch (dd->ipath_ibmtu) {
+ case 4096:
+ tmp = 5;
+ break;
+ case 2048:
+ tmp = 4;
+ break;
+ case 1024:
+ tmp = 3;
+ break;
+ case 512:
+ tmp = 2;
+ break;
+ case 256:
+ tmp = 1;
+ break;
+ default: /* oops, something is wrong */
+ ipath_dbg("Problem, ipath_ibmtu 0x%x not a valid IB MTU, "
+ "treat as 2048\n", dd->ipath_ibmtu);
+ tmp = 4;
+ break;
+ }
+ portinfo[9] = (tmp << 28)
+ /* NeighborMTU */
+ /* Notimpl MasterSMSL */
+ | (1 << 20)
+
+ /* VLCap */
+ /* Notimpl InitType (actually, an SMA decision) */
+ /* VLHighLimit is 0 (only one VL) */
+ ; /* VLArbitrationHighCap is 0 (only one VL) */
+ portinfo[10] = /* VLArbitrationLowCap is 0 (only one VL) */
+ /* InitTypeReply is SMA decision */
+ (5 << 16) /* MTUCap 4096 */
+ | (7 << 13) /* VLStallCount */
+ | (0x1f << 8) /* HOQLife */
+ | (1 << 4)
+
+ /* OperationalVLs 0 */
+ /* PartitionEnforcementInbound */
+ /* PartitionEnforcementOutbound not enforced */
+ /* FilterRawinbound not enforced */
+ ; /* FilterRawOutbound not enforced */
+ /* M_KeyViolations are not counted by hardware, SMA can count */
+ tmp = ipath_read_creg32(dd, dd->ipath_cregs->cr_errpkey);
+ /* P_KeyViolations are counted by hardware. */
+ portinfo[11] = ((tmp & 0xffff) << 0);
+ portinfo[12] =
+ /* Q_KeyViolations are not counted by hardware */
+ (1 << 8)
+
+ /* GUIDCap */
+ /* SubnetTimeOut handled by SMA */
+ /* RespTimeValue handled by SMA */
+ ;
+ /* LocalPhyErrors are programmed to max */
+ portinfo[12] |= (0xf << 20)
+ | (0xf << 16) /* OverRunErrors are programmed to max */
+ ;
+
+ return simple_read_from_buffer(buf, count, ppos, portinfo,
+ sizeof portinfo);
+}
+
+static struct file_operations atomic_port_info_ops = {
+ .read = atomic_port_info_read,
+};
+
+static ssize_t flash_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ipath_devdata *dd;
+ ssize_t ret;
+ loff_t pos;
+ char *tmp;
+
+ pos = *ppos;
+
+ if ( pos < 0) {
+ ret = -EINVAL;
+ goto bail;
+ }
+
+ if (pos >= sizeof(struct ipath_flash)) {
+ ret = 0;
+ goto bail;
+ }
+
+ if (count > sizeof(struct ipath_flash) - pos)
+ count = sizeof(struct ipath_flash) - pos;
+
+ tmp = kmalloc(count, GFP_KERNEL);
+ if (!tmp) {
+ ret = -ENOMEM;
+ goto bail;
+ }
+
+ dd = file->f_dentry->d_inode->u.generic_ip;
+ if (ipath_eeprom_read(dd, pos, tmp, count)) {
+ ipath_dev_err(dd, "failed to read from flash\n");
+ ret = -ENXIO;
+ goto bail_tmp;
+ }
+
+ if (copy_to_user(buf, tmp, count)) {
+ ret = -EFAULT;
+ goto bail_tmp;
+ }
+
+ *ppos = pos + count;
+ ret = count;
+
+bail_tmp:
+ kfree(tmp);
+
+bail:
+ return ret;
+}
+
+static ssize_t flash_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ipath_devdata *dd;
+ ssize_t ret;
+ loff_t pos;
+ char *tmp;
+
+ pos = *ppos;
+
+ if ( pos < 0) {
+ ret = -EINVAL;
+ goto bail;
+ }
+
+ if (pos >= sizeof(struct ipath_flash)) {
+ ret = 0;
+ goto bail;
+ }
+
+ if (count > sizeof(struct ipath_flash) - pos)
+ count = sizeof(struct ipath_flash) - pos;
+
+ tmp = kmalloc(count, GFP_KERNEL);
+ if (!tmp) {
+ ret = -ENOMEM;
+ goto bail;
+ }
+
+ if (copy_from_user(tmp, buf, count)) {
+ ret = -EFAULT;
+ goto bail_tmp;
+ }
+
+ dd = file->f_dentry->d_inode->u.generic_ip;
+ if (ipath_eeprom_write(dd, pos, tmp, count)) {
+ ret = -ENXIO;
+ ipath_dev_err(dd, "failed to write to flash\n");
+ goto bail_tmp;
+ }
+
+ *ppos = pos + count;
+ ret = count;
+
+bail_tmp:
+ kfree(tmp);
+
+bail:
+ return ret;
+}
+
+static struct file_operations flash_ops = {
+ .read = flash_read,
+ .write = flash_write,
+};
+
+static int ipathfs_fill_super(struct super_block *sb, void *data,
+ int silent)
+{
+ struct ipath_devdata *dd, *tmp;
+ unsigned long flags;
+ static char unit[10];
+ int ret;
+
+ static struct tree_descr files[] = {
+ [1] = {"atomic_stats", &atomic_stats_ops, S_IRUGO},
+ {""},
+ };
+
+ ret = simple_fill_super(sb, IPATHFS_MAGIC, files);
+ if (ret) {
+ printk(KERN_ERR "simple_fill_super failed: %d\n", ret);
+ goto bail;
+ }
+
+ spin_lock_irqsave(&ipath_devs_lock, flags);
+
+ list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) {
+ struct dentry *dir, *tmp;
+
+ spin_unlock_irqrestore(&ipath_devs_lock, flags);
+
+ snprintf(unit, sizeof unit, "%02d", dd->ipath_unit);
+ ret = create_file(unit, S_IFDIR|S_IRUGO|S_IXUGO, sb->s_root,
+ &dir, &simple_dir_operations, dd);
+ if (ret) {
+ printk(KERN_ERR "create_file(%s) failed: %d\n",
+ unit, ret);
+ goto super;
+ }
+
+ ret = create_file("atomic_counters", S_IRUGO, dir, &tmp,
+ &atomic_counters_ops, dd);
+ if (ret) {
+ printk(KERN_ERR "create_file(%s/atomic_counters) "
+ "failed: %d\n", unit, ret);
+ goto super;
+ }
+
+ ret = create_file("node_info", S_IRUGO, dir, &tmp,
+ &atomic_node_info_ops, dd);
+ if (ret) {
+ printk(KERN_ERR "create_file(%s/node_info) "
+ "failed: %d\n", unit, ret);
+ goto super;
+ }
+
+ ret = create_file("port_info", S_IRUGO, dir, &tmp,
+ &atomic_port_info_ops, dd);
+ if (ret) {
+ printk(KERN_ERR "create_file(%s/port_info) "
+ "failed: %d\n", unit, ret);
+ goto super;
+ }
+
+ ret = create_file("flash", S_IRUGO, dir, &tmp,
+ &flash_ops, dd);
+ if (ret) {
+ printk(KERN_ERR "create_file(%s/flash) "
+ "failed: %d\n", unit, ret);
+ goto super;
+ }
+
+ spin_lock_irqsave(&ipath_devs_lock, flags);
+ }
+ spin_unlock_irqrestore(&ipath_devs_lock, flags);
+
+ ret = 0;
+ goto bail;
+
+super:
+ deactivate_super(sb);
+
+bail:
+ return ret;
+}
+
+static struct super_block *ipathfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name,
+ void *data)
+{
+ return get_sb_single(fs_type, flags, data, ipathfs_fill_super);
+}
+
+static struct file_system_type ipathfs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "ipathfs",
+ .get_sb = ipathfs_get_sb,
+ .kill_sb = kill_litter_super,
+};
+
+int __init ipath_init_ipathfs(void)
+{
+ return register_filesystem(&ipathfs_fs_type);
+}
+
+void __exit ipath_exit_ipathfs(void)
+{
+ unregister_filesystem(&ipathfs_fs_type);
+}
diff -r ca4e584c8901 -r 03375633b9c1 drivers/infiniband/hw/ipath/ipath_sysfs.c
--- /dev/null Thu Jan 1 00:00:00 1970 +0000
+++ b/drivers/infiniband/hw/ipath/ipath_sysfs.c Wed Mar 22 14:54:26 2006 -0800
@@ -0,0 +1,762 @@
+/*
+ * Copyright (c) 2006 PathScale, 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/ctype.h>
+#include <linux/pci.h>
+
+#include "ipath_kernel.h"
+#include "ips_common.h"
+#include "ipath_layer.h"
+
+/**
+ * ipath_parse_ushort - parse an unsigned short value in an arbitrary base
+ * @str: the string containing the number
+ * @valp: where to put the result
+ *
+ * returns the number of bytes consumed, or negative value on error
+ */
+int ipath_parse_ushort(const char *str, unsigned short *valp)
+{
+ unsigned long val;
+ char *end;
+ int ret;
+
+ if (!isdigit(str[0]))
+ return -EINVAL;
+
+ val = simple_strtoul(str, &end, 0);
+
+ if (val > 0xffff)
+ return -EINVAL;
+
+ *valp = val;
+
+ ret = end + 1 - str;
+ if (ret == 0)
+ ret = -EINVAL;
+
+ return ret;
+}
+
+static ssize_t show_version(struct device_driver *dev, char *buf)
+{
+ /* The string printed here is already newline-terminated. */
+ return scnprintf(buf, PAGE_SIZE, "%s", ipath_core_version);
+}
+
+static ssize_t show_num_units(struct device_driver *dev, char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%d\n",
+ ipath_count_units(NULL, NULL, NULL));
+}
+
+#define DRIVER_STAT(name, attr) \
+ static ssize_t show_stat_##name(struct device_driver *dev, \
+ char *buf) \
+ { \
+ return scnprintf( \
+ buf, PAGE_SIZE, "%llu\n", \
+ (unsigned long long) ipath_stats.sps_ ##attr); \
+ } \
+ static DRIVER_ATTR(name, S_IRUGO, show_stat_##name, NULL)
+
+DRIVER_STAT(intrs, ints);
+DRIVER_STAT(err_intrs, errints);
+DRIVER_STAT(errs, errs);
+DRIVER_STAT(pkt_errs, pkterrs);
+DRIVER_STAT(crc_errs, crcerrs);
+DRIVER_STAT(hw_errs, hwerrs);
+DRIVER_STAT(ib_link, iblink);
+DRIVER_STAT(port0_pkts, port0pkts);
+DRIVER_STAT(ether_spkts, ether_spkts);
+DRIVER_STAT(ether_rpkts, ether_rpkts);
+DRIVER_STAT(sma_spkts, sma_spkts);
+DRIVER_STAT(sma_rpkts, sma_rpkts);
+DRIVER_STAT(hdrq_full, hdrqfull);
+DRIVER_STAT(etid_full, etidfull);
+DRIVER_STAT(no_piobufs, nopiobufs);
+DRIVER_STAT(ports, ports);
+DRIVER_STAT(pkey0, pkeys[0]);
+DRIVER_STAT(pkey1, pkeys[1]);
+DRIVER_STAT(pkey2, pkeys[2]);
+DRIVER_STAT(pkey3, pkeys[3]);
+/* XXX fix the following when dynamic table of devices used */
+DRIVER_STAT(lid0, lid[0]);
+DRIVER_STAT(lid1, lid[1]);
+DRIVER_STAT(lid2, lid[2]);
+DRIVER_STAT(lid3, lid[3]);
+
+DRIVER_STAT(nports, nports);
+DRIVER_STAT(null_intr, nullintr);
+DRIVER_STAT(max_pkts_call, maxpkts_call);
+DRIVER_STAT(avg_pkts_call, avgpkts_call);
+DRIVER_STAT(page_locks, pagelocks);
+DRIVER_STAT(page_unlocks, pageunlocks);
+DRIVER_STAT(krdrops, krdrops);
+/* XXX fix the following when dynamic table of devices used */
+DRIVER_STAT(mlid0, mlid[0]);
+DRIVER_STAT(mlid1, mlid[1]);
+DRIVER_STAT(mlid2, mlid[2]);
+DRIVER_STAT(mlid3, mlid[3]);
+
+static struct attribute *driver_stat_attributes[] = {
+ &driver_attr_intrs.attr,
+ &driver_attr_err_intrs.attr,
+ &driver_attr_errs.attr,
+ &driver_attr_pkt_errs.attr,
+ &driver_attr_crc_errs.attr,
+ &driver_attr_hw_errs.attr,
+ &driver_attr_ib_link.attr,
+ &driver_attr_port0_pkts.attr,
+ &driver_attr_ether_spkts.attr,
+ &driver_attr_ether_rpkts.attr,
+ &driver_attr_sma_spkts.attr,
+ &driver_attr_sma_rpkts.attr,
+ &driver_attr_hdrq_full.attr,
+ &driver_attr_etid_full.attr,
+ &driver_attr_no_piobufs.attr,
+ &driver_attr_ports.attr,
+ &driver_attr_pkey0.attr,
+ &driver_attr_pkey1.attr,
+ &driver_attr_pkey2.attr,
+ &driver_attr_pkey3.attr,
+ &driver_attr_lid0.attr,
+ &driver_attr_lid1.attr,
+ &driver_attr_lid2.attr,
+ &driver_attr_lid3.attr,
+ &driver_attr_nports.attr,
+ &driver_attr_null_intr.attr,
+ &driver_attr_max_pkts_call.attr,
+ &driver_attr_avg_pkts_call.attr,
+ &driver_attr_page_locks.attr,
+ &driver_attr_page_unlocks.attr,
+ &driver_attr_krdrops.attr,
+ &driver_attr_mlid0.attr,
+ &driver_attr_mlid1.attr,
+ &driver_attr_mlid2.attr,
+ &driver_attr_mlid3.attr,
+ NULL
+};
+
+static struct attribute_group driver_stat_attr_group = {
+ .name = "stats",
+ .attrs = driver_stat_attributes
+};
+
+static ssize_t show_status(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+
+ if (!dd->ipath_statusp)
+ return -EINVAL;
+
+ return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
+ (unsigned long long) *(dd->ipath_statusp));
+}
+
+static const char *ipath_status_str[] = {
+ "Initted",
+ "Disabled",
+ "Admin_Disabled",
+ "OIB_SMA",
+ "SMA",
+ "Present",
+ "IB_link_up",
+ "IB_configured",
+ "NoIBcable",
+ "Fatal_Hardware_Error",
+ NULL,
+};
+
+static ssize_t show_status_str(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ int i, any;
+ u64 s;
+
+ if (!dd->ipath_statusp)
+ return -EINVAL;
+
+ s = *(dd->ipath_statusp);
+ *buf = '\0';
+ for (any = i = 0; s && ipath_status_str[i]; i++) {
+ if (s & 1) {
+ if (any && strlcat(buf, " ", PAGE_SIZE) >=
+ PAGE_SIZE)
+ /* overflow */
+ break;
+ if (strlcat(buf, ipath_status_str[i],
+ PAGE_SIZE) >= PAGE_SIZE)
+ break;
+ any = 1;
+ }
+ s >>= 1;
+ }
+ if (any)
+ strlcat(buf, "\n", PAGE_SIZE);
+
+ return strlen(buf);
+}
+
+static ssize_t show_boardversion(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ /* The string printed here is already newline-terminated. */
+ return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion);
+}
+
+static ssize_t show_lid(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid);
+}
+
+static ssize_t store_lid(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ u16 lid;
+ int ret;
+
+ ret = ipath_parse_ushort(buf, &lid);
+ if (ret < 0)
+ goto invalid;
+
+ if (lid == 0 || lid >= 0xc000) {
+ ret = -EINVAL;
+ goto invalid;
+ }
+
+ ipath_set_sps_lid(dd, lid, 0);
+
+ goto bail;
+invalid:
+ ipath_dev_err(dd, "attempt to set invalid LID\n");
+bail:
+ return ret;
+}
+
+static ssize_t show_mlid(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid);
+}
+
+static ssize_t store_mlid(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ int unit;
+ u16 mlid;
+ int ret;
+
+ ret = ipath_parse_ushort(buf, &mlid);
+ if (ret < 0)
+ goto invalid;
+
+ unit = dd->ipath_unit;
+
+ dd->ipath_mlid = mlid;
+ ipath_stats.sps_mlid[unit] = mlid;
+ ipath_layer_intr(dd, IPATH_LAYER_INT_BCAST);
+
+ goto bail;
+invalid:
+ ipath_dev_err(dd, "attempt to set invalid MLID\n");
+bail:
+ return ret;
+}
+
+static ssize_t show_guid(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ u8 *guid;
+
+ guid = (u8 *) & (dd->ipath_guid);
+
+ return scnprintf(buf, PAGE_SIZE,
+ "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
+ guid[0], guid[1], guid[2], guid[3],
+ guid[4], guid[5], guid[6], guid[7]);
+}
+
+static ssize_t store_guid(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ ssize_t ret;
+ unsigned short guid[8];
+ u64 nguid;
+ u8 *ng;
+ int i;
+
+ if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
+ &guid[0], &guid[1], &guid[2], &guid[3],
+ &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
+ goto invalid;
+
+ ng = (u8 *) &nguid;
+
+ for (i = 0; i < 8; i++) {
+ if (guid[i] > 0xff)
+ goto invalid;
+ ng[i] = guid[i];
+ }
+
+ dd->ipath_guid = nguid;
+ dd->ipath_nguid = 1;
+
+ ret = strlen(buf);
+ goto bail;
+
+invalid:
+ ipath_dev_err(dd, "attempt to set invalid GUID\n");
+ ret = -EINVAL;
+
+bail:
+ return ret;
+}
+
+static ssize_t show_nguid(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
+}
+
+static ssize_t show_serial(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+
+ buf[sizeof dd->ipath_serial] = '\0';
+ memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
+ strcat(buf, "\n");
+ return strlen(buf);
+}
+
+static ssize_t show_unit(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
+}
+
+#define DEVICE_COUNTER(name, attr) \
+ static ssize_t show_counter_##name(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+ { \
+ struct ipath_devdata *dd = dev_get_drvdata(dev); \
+ return scnprintf(\
+ buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
+ ipath_snap_cntr( \
+ dd, offsetof(struct infinipath_counters, \
+ attr) / sizeof(u64))); \
+ } \
+ static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
+
+DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
+DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
+DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
+DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
+DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
+DEVICE_COUNTER(lb_ints, LBIntCnt);
+DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
+DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
+DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
+DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
+DEVICE_COUNTER(rx_dwords, RxDwordCnt);
+DEVICE_COUNTER(rx_ebps, RxEBPCnt);
+DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
+DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
+DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
+DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
+DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
+DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
+DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
+DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
+DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
+DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
+DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
+DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
+DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
+DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
+DEVICE_COUNTER(tx_dwords, TxDwordCnt);
+DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
+DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
+DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
+DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
+DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
+DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
+
+static struct attribute *dev_counter_attributes[] = {
+ &dev_attr_ib_link_downeds.attr,
+ &dev_attr_ib_link_err_recoveries.attr,
+ &dev_attr_ib_status_changes.attr,
+ &dev_attr_ib_symbol_errs.attr,
+ &dev_attr_lb_flow_stalls.attr,
+ &dev_attr_lb_ints.attr,
+ &dev_attr_rx_bad_formats.attr,
+ &dev_attr_rx_buf_ovfls.attr,
+ &dev_attr_rx_data_pkts.attr,
+ &dev_attr_rx_dropped_pkts.attr,
+ &dev_attr_rx_dwords.attr,
+ &dev_attr_rx_ebps.attr,
+ &dev_attr_rx_flow_ctrl_errs.attr,
+ &dev_attr_rx_flow_pkts.attr,
+ &dev_attr_rx_icrc_errs.attr,
+ &dev_attr_rx_len_errs.attr,
+ &dev_attr_rx_link_problems.attr,
+ &dev_attr_rx_lpcrc_errs.attr,
+ &dev_attr_rx_max_min_len_errs.attr,
+ &dev_attr_rx_p0_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p1_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p2_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p3_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p4_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p5_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p6_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p7_hdr_egr_ovfls.attr,
+ &dev_attr_rx_p8_hdr_egr_ovfls.attr,
+ &dev_attr_rx_pkey_mismatches.attr,
+ &dev_attr_rx_tid_full_errs.attr,
+ &dev_attr_rx_tid_valid_errs.attr,
+ &dev_attr_rx_vcrc_errs.attr,
+ &dev_attr_tx_data_pkts.attr,
+ &dev_attr_tx_dropped_pkts.attr,
+ &dev_attr_tx_dwords.attr,
+ &dev_attr_tx_flow_pkts.attr,
+ &dev_attr_tx_flow_stalls.attr,
+ &dev_attr_tx_len_errs.attr,
+ &dev_attr_tx_max_min_len_errs.attr,
+ &dev_attr_tx_underruns.attr,
+ &dev_attr_tx_unsup_vl_errs.attr,
+ NULL
+};
+
+static struct attribute_group dev_counter_attr_group = {
+ .name = "counters",
+ .attrs = dev_counter_attributes
+};
+
+static ssize_t store_reset(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ int ret;
+
+ if (count < 5 || memcmp(buf, "reset", 5)) {
+ ret = -EINVAL;
+ goto bail;
+ }
+
+ if (dd->ipath_flags & IPATH_DISABLED) {
+ /*
+ * post-reset init would re-enable interrupts, etc.
+ * so don't allow reset on disabled devices. Not
+ * perfect error, but about the best choice.
+ */
+ dev_info(dev,"Unit %d is disabled, can't reset\n",
+ dd->ipath_unit);
+ ret = -EINVAL;
+ }
+ ret = ipath_reset_device(dd->ipath_unit);
+bail:
+ return ret<0 ? ret : count;
+}
+
+static ssize_t store_link_state(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ int ret, r;
+ u16 state;
+
+ ret = ipath_parse_ushort(buf, &state);
+ if (ret < 0)
+ goto invalid;
+
+ r = ipath_layer_set_linkstate(dd, state);
+ if (r < 0) {
+ ret = r;
+ goto bail;
+ }
+
+ goto bail;
+invalid:
+ ipath_dev_err(dd, "attempt to set invalid link state\n");
+bail:
+ return ret;
+}
+
+static ssize_t show_mtu(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
+}
+
+static ssize_t store_mtu(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ ssize_t ret;
+ u16 mtu = 0;
+ int r;
+
+ ret = ipath_parse_ushort(buf, &mtu);
+ if (ret < 0)
+ goto invalid;
+
+ r = ipath_layer_set_mtu(dd, mtu);
+ if (r < 0)
+ ret = r;
+
+ goto bail;
+invalid:
+ ipath_dev_err(dd, "attempt to set invalid MTU\n");
+bail:
+ return ret;
+}
+
+static ssize_t show_enabled(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
+}
+
+static ssize_t store_enabled(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ ssize_t ret;
+ u16 enable = 0;
+
+ ret = ipath_parse_ushort(buf, &enable);
+ if (ret < 0) {
+ ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
+ goto bail;
+ }
+
+ if (enable) {
+ if (!(dd->ipath_flags & IPATH_DISABLED))
+ goto bail;
+
+ dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
+ /* same as post-reset */
+ ret = ipath_init_chip(dd, 1);
+ if (ret)
+ ipath_dev_err(dd, "Failed to enable unit %d\n",
+ dd->ipath_unit);
+ else {
+ dd->ipath_flags &= ~IPATH_DISABLED;
+ *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
+ }
+ }
+ else if (!(dd->ipath_flags & IPATH_DISABLED)) {
+ dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
+ ipath_shutdown_device(dd);
+ dd->ipath_flags |= IPATH_DISABLED;
+ *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
+ }
+
+bail:
+ return ret;
+}
+
+static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
+static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
+
+static struct attribute *driver_attributes[] = {
+ &driver_attr_num_units.attr,
+ &driver_attr_version.attr,
+ NULL
+};
+
+static struct attribute_group driver_attr_group = {
+ .attrs = driver_attributes
+};
+
+static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
+static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
+static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
+static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
+static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
+static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
+static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
+static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
+static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
+static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
+static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
+static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
+static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
+
+static struct attribute *dev_attributes[] = {
+ &dev_attr_guid.attr,
+ &dev_attr_lid.attr,
+ &dev_attr_link_state.attr,
+ &dev_attr_mlid.attr,
+ &dev_attr_mtu.attr,
+ &dev_attr_nguid.attr,
+ &dev_attr_serial.attr,
+ &dev_attr_status.attr,
+ &dev_attr_status_str.attr,
+ &dev_attr_boardversion.attr,
+ &dev_attr_unit.attr,
+ &dev_attr_enabled.attr,
+ NULL
+};
+
+static struct attribute_group dev_attr_group = {
+ .attrs = dev_attributes
+};
+
+/**
+ * ipath_expose_reset - create a device reset file
+ * @dev: the device structure
+ *
+ * Only expose a file that lets us reset the device after someone
+ * enters diag mode. A device reset is quite likely to crash the
+ * machine entirely, so we don't want to normally make it
+ * available.
+ */
+int ipath_expose_reset(struct device *dev)
+{
+ return device_create_file(dev, &dev_attr_reset);
+}
+
+int ipath_driver_create_group(struct device_driver *drv)
+{
+ int ret;
+
+ if (!drv->kobj.dentry) {
+ ret = -ENODEV;
+ goto bail;
+ }
+
+ ret = sysfs_create_group(&drv->kobj, &driver_attr_group);
+ if (ret)
+ goto bail;
+
+ ret = sysfs_create_group(&drv->kobj, &driver_stat_attr_group);
+ if (ret)
+ sysfs_remove_group(&drv->kobj, &driver_attr_group);
+
+bail:
+ return ret;
+}
+
+void ipath_driver_remove_group(struct device_driver *drv)
+{
+ if (drv->kobj.dentry) {
+ sysfs_remove_group(&drv->kobj, &driver_stat_attr_group);
+ sysfs_remove_group(&drv->kobj, &driver_attr_group);
+ }
+}
+
+int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
+{
+ int ret;
+ char unit[5];
+
+ ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
+ if (ret)
+ goto bail;
+
+ ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
+ if (ret)
+ goto bail;
+
+ snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
+ ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj, unit);
+bail:
+ return ret;
+}
+
+void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
+{
+ char unit[5];
+
+ snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
+ sysfs_remove_link(&dev->driver->kobj, unit);
+
+ sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
+ sysfs_remove_group(&dev->kobj, &dev_attr_group);
+
+ device_remove_file(dev, &dev_attr_reset);
+}
More information about the general
mailing list