/*
- * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
* Copyright (c) 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
#include <linux/pagemap.h>
#include <linux/init.h>
#include <linux/namei.h>
-#include <linux/pci.h>
#include "ipath_kernel.h"
static struct super_block *ipath_super;
static int ipathfs_mknod(struct inode *dir, struct dentry *dentry,
- int mode, struct file_operations *fops,
+ int mode, const struct file_operations *fops,
void *data)
{
int error;
static int create_file(const char *name, mode_t mode,
struct dentry *parent, struct dentry **dentry,
- struct file_operations *fops, void *data)
+ const struct file_operations *fops, void *data)
{
int error;
sizeof ipath_stats);
}
-static struct file_operations atomic_stats_ops = {
+static const 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 infinipath_counters counters;
struct ipath_devdata *dd;
dd = file->f_path.dentry->d_inode->i_private;
+ dd->ipath_f_read_counters(dd, &counters);
- for (i = 0; i < NUM_COUNTERS; i++)
- counters[i] = ipath_snap_cntr(dd, i);
-
- return simple_read_from_buffer(buf, count, ppos, counters,
+ return simple_read_from_buffer(buf, count, ppos, &counters,
sizeof counters);
}
-static struct file_operations atomic_counters_ops = {
+static const 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;
- u64 guid;
-
- dd = file->f_path.dentry->d_inode->i_private;
-
- guid = be64_to_cpu(dd->ipath_guid);
-
- nodeinfo[0] = /* BaseVersion is SMA */
- /* ClassVersion is SMA */
- (1 << 8) /* NodeType */
- | (1 << 0); /* NumPorts */
- nodeinfo[1] = (u32) (guid >> 32);
- nodeinfo[2] = (u32) (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_path.dentry->d_inode->i_private;
-
- /* 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.
- * 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)
{
return ret;
}
-static struct file_operations flash_ops = {
+static const struct file_operations flash_ops = {
.read = flash_read,
.write = flash_write,
};
snprintf(unit, sizeof unit, "%02d", dd->ipath_unit);
ret = create_file(unit, S_IFDIR|S_IRUGO|S_IXUGO, sb->s_root, &dir,
- (struct file_operations *) &simple_dir_operations,
- dd);
+ &simple_dir_operations, dd);
if (ret) {
printk(KERN_ERR "create_file(%s) failed: %d\n", unit, ret);
goto bail;
goto bail;
}
- ret = create_file("node_info", S_IFREG|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 bail;
- }
-
- ret = create_file("port_info", S_IFREG|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 bail;
- }
-
ret = create_file("flash", S_IFREG|S_IWUSR|S_IRUGO, dir, &tmp,
&flash_ops, dd);
if (ret) {
return ret;
}
-static void remove_file(struct dentry *parent, char *name)
+static int remove_file(struct dentry *parent, char *name)
{
struct dentry *tmp;
+ int ret;
tmp = lookup_one_len(name, parent, strlen(name));
+ if (IS_ERR(tmp)) {
+ ret = PTR_ERR(tmp);
+ goto bail;
+ }
+
spin_lock(&dcache_lock);
spin_lock(&tmp->d_lock);
if (!(d_unhashed(tmp) && tmp->d_inode)) {
spin_unlock(&tmp->d_lock);
spin_unlock(&dcache_lock);
}
+
+ ret = 0;
+bail:
+ /*
+ * We don't expect clients to care about the return value, but
+ * it's there if they need it.
+ */
+ return ret;
}
static int remove_device_files(struct super_block *sb,
}
remove_file(dir, "flash");
- remove_file(dir, "port_info");
- remove_file(dir, "node_info");
remove_file(dir, "atomic_counters");
d_delete(dir);
ret = simple_rmdir(root->d_inode, dir);
int ret;
static struct tree_descr files[] = {
- [1] = {"atomic_stats", &atomic_stats_ops, S_IRUGO},
+ [2] = {"atomic_stats", &atomic_stats_ops, S_IRUGO},
{""},
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff