[PATCH] powerpc: Move scanlog.c to platforms/pseries
authorDavid Gibson <david@gibson.dropbear.id.au>
Thu, 10 Nov 2005 01:42:17 +0000 (12:42 +1100)
committerPaul Mackerras <paulus@samba.org>
Thu, 10 Nov 2005 02:09:27 +0000 (13:09 +1100)
scanlog.c is only compiled on pSeries.  Thus, this patch moves it to
platforms/pseries.

Built and booted on pSeries LPAR (ARCH=powerpc and ARCH=ppc64).  Built
for iSeries (ARCH=powerpc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/platforms/pseries/Makefile
arch/powerpc/platforms/pseries/scanlog.c [new file with mode: 0644]
arch/ppc64/kernel/Makefile
arch/ppc64/kernel/scanlog.c [deleted file]

index 27515476ad6c2cd2c0d0469188a61b02c356d837..e7ca5b1f591e2977dd5d2162747086400b82a4f1 100644 (file)
@@ -3,4 +3,5 @@ obj-y                   := pci.o lpar.o hvCall.o nvram.o reconfig.o \
 obj-$(CONFIG_SMP)      += smp.o
 obj-$(CONFIG_IBMVIO)   += vio.o
 obj-$(CONFIG_XICS)     += xics.o
+obj-$(CONFIG_SCANLOG)  += scanlog.o
 obj-$(CONFIG_EEH)    += eeh.o eeh_event.o
diff --git a/arch/powerpc/platforms/pseries/scanlog.c b/arch/powerpc/platforms/pseries/scanlog.c
new file mode 100644 (file)
index 0000000..2edc947
--- /dev/null
@@ -0,0 +1,235 @@
+/*
+ *  c 2001 PPC 64 Team, IBM Corp
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ * scan-log-data driver for PPC64  Todd Inglett <tinglett@vnet.ibm.com>
+ *
+ * When ppc64 hardware fails the service processor dumps internal state
+ * of the system.  After a reboot the operating system can access a dump
+ * of this data using this driver.  A dump exists if the device-tree
+ * /chosen/ibm,scan-log-data property exists.
+ *
+ * This driver exports /proc/ppc64/scan-log-dump which can be read.
+ * The driver supports only sequential reads.
+ *
+ * The driver looks at a write to the driver for the single word "reset".
+ * If given, the driver will reset the scanlog so the platform can free it.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/uaccess.h>
+#include <asm/rtas.h>
+#include <asm/prom.h>
+
+#define MODULE_VERS "1.0"
+#define MODULE_NAME "scanlog"
+
+/* Status returns from ibm,scan-log-dump */
+#define SCANLOG_COMPLETE 0
+#define SCANLOG_HWERROR -1
+#define SCANLOG_CONTINUE 1
+
+#define DEBUG(A...) do { if (scanlog_debug) printk(KERN_ERR "scanlog: " A); } while (0)
+
+static int scanlog_debug;
+static unsigned int ibm_scan_log_dump;                 /* RTAS token */
+static struct proc_dir_entry *proc_ppc64_scan_log_dump;        /* The proc file */
+
+static ssize_t scanlog_read(struct file *file, char __user *buf,
+                           size_t count, loff_t *ppos)
+{
+        struct inode * inode = file->f_dentry->d_inode;
+       struct proc_dir_entry *dp;
+       unsigned int *data;
+       int status;
+       unsigned long len, off;
+       unsigned int wait_time;
+
+        dp = PDE(inode);
+       data = (unsigned int *)dp->data;
+
+       if (!data) {
+               printk(KERN_ERR "scanlog: read failed no data\n");
+               return -EIO;
+       }
+
+       if (count > RTAS_DATA_BUF_SIZE)
+               count = RTAS_DATA_BUF_SIZE;
+
+       if (count < 1024) {
+               /* This is the min supported by this RTAS call.  Rather
+                * than do all the buffering we insist the user code handle
+                * larger reads.  As long as cp works... :)
+                */
+               printk(KERN_ERR "scanlog: cannot perform a small read (%ld)\n", count);
+               return -EINVAL;
+       }
+
+       if (!access_ok(VERIFY_WRITE, buf, count))
+               return -EFAULT;
+
+       for (;;) {
+               wait_time = 500;        /* default wait if no data */
+               spin_lock(&rtas_data_buf_lock);
+               memcpy(rtas_data_buf, data, RTAS_DATA_BUF_SIZE);
+               status = rtas_call(ibm_scan_log_dump, 2, 1, NULL,
+                                  (u32) __pa(rtas_data_buf), (u32) count);
+               memcpy(data, rtas_data_buf, RTAS_DATA_BUF_SIZE);
+               spin_unlock(&rtas_data_buf_lock);
+
+               DEBUG("status=%d, data[0]=%x, data[1]=%x, data[2]=%x\n",
+                     status, data[0], data[1], data[2]);
+               switch (status) {
+                   case SCANLOG_COMPLETE:
+                       DEBUG("hit eof\n");
+                       return 0;
+                   case SCANLOG_HWERROR:
+                       DEBUG("hardware error reading scan log data\n");
+                       return -EIO;
+                   case SCANLOG_CONTINUE:
+                       /* We may or may not have data yet */
+                       len = data[1];
+                       off = data[2];
+                       if (len > 0) {
+                               if (copy_to_user(buf, ((char *)data)+off, len))
+                                       return -EFAULT;
+                               return len;
+                       }
+                       /* Break to sleep default time */
+                       break;
+                   default:
+                       if (status > 9900 && status <= 9905) {
+                               wait_time = rtas_extended_busy_delay_time(status);
+                       } else {
+                               printk(KERN_ERR "scanlog: unknown error from rtas: %d\n", status);
+                               return -EIO;
+                       }
+               }
+               /* Apparently no data yet.  Wait and try again. */
+               msleep_interruptible(wait_time);
+       }
+       /*NOTREACHED*/
+}
+
+static ssize_t scanlog_write(struct file * file, const char __user * buf,
+                            size_t count, loff_t *ppos)
+{
+       char stkbuf[20];
+       int status;
+
+       if (count > 19) count = 19;
+       if (copy_from_user (stkbuf, buf, count)) {
+               return -EFAULT;
+       }
+       stkbuf[count] = 0;
+
+       if (buf) {
+               if (strncmp(stkbuf, "reset", 5) == 0) {
+                       DEBUG("reset scanlog\n");
+                       status = rtas_call(ibm_scan_log_dump, 2, 1, NULL, 0, 0);
+                       DEBUG("rtas returns %d\n", status);
+               } else if (strncmp(stkbuf, "debugon", 7) == 0) {
+                       printk(KERN_ERR "scanlog: debug on\n");
+                       scanlog_debug = 1;
+               } else if (strncmp(stkbuf, "debugoff", 8) == 0) {
+                       printk(KERN_ERR "scanlog: debug off\n");
+                       scanlog_debug = 0;
+               }
+       }
+       return count;
+}
+
+static int scanlog_open(struct inode * inode, struct file * file)
+{
+       struct proc_dir_entry *dp = PDE(inode);
+       unsigned int *data = (unsigned int *)dp->data;
+
+       if (!data) {
+               printk(KERN_ERR "scanlog: open failed no data\n");
+               return -EIO;
+       }
+
+       if (data[0] != 0) {
+               /* This imperfect test stops a second copy of the
+                * data (or a reset while data is being copied)
+                */
+               return -EBUSY;
+       }
+
+       data[0] = 0;    /* re-init so we restart the scan */
+
+       return 0;
+}
+
+static int scanlog_release(struct inode * inode, struct file * file)
+{
+       struct proc_dir_entry *dp = PDE(inode);
+       unsigned int *data = (unsigned int *)dp->data;
+
+       if (!data) {
+               printk(KERN_ERR "scanlog: release failed no data\n");
+               return -EIO;
+       }
+       data[0] = 0;
+
+       return 0;
+}
+
+struct file_operations scanlog_fops = {
+       .owner          = THIS_MODULE,
+       .read           = scanlog_read,
+       .write          = scanlog_write,
+       .open           = scanlog_open,
+       .release        = scanlog_release,
+};
+
+int __init scanlog_init(void)
+{
+       struct proc_dir_entry *ent;
+
+       ibm_scan_log_dump = rtas_token("ibm,scan-log-dump");
+       if (ibm_scan_log_dump == RTAS_UNKNOWN_SERVICE) {
+               printk(KERN_ERR "scan-log-dump not implemented on this system\n");
+               return -EIO;
+       }
+
+        ent = create_proc_entry("ppc64/rtas/scan-log-dump",  S_IRUSR, NULL);
+       if (ent) {
+               ent->proc_fops = &scanlog_fops;
+               /* Ideally we could allocate a buffer < 4G */
+               ent->data = kmalloc(RTAS_DATA_BUF_SIZE, GFP_KERNEL);
+               if (!ent->data) {
+                       printk(KERN_ERR "Failed to allocate a buffer\n");
+                       remove_proc_entry("scan-log-dump", ent->parent);
+                       return -ENOMEM;
+               }
+               ((unsigned int *)ent->data)[0] = 0;
+       } else {
+               printk(KERN_ERR "Failed to create ppc64/scan-log-dump proc entry\n");
+               return -EIO;
+       }
+       proc_ppc64_scan_log_dump = ent;
+
+       return 0;
+}
+
+void __exit scanlog_cleanup(void)
+{
+       if (proc_ppc64_scan_log_dump) {
+               kfree(proc_ppc64_scan_log_dump->data);
+               remove_proc_entry("scan-log-dump", proc_ppc64_scan_log_dump->parent);
+       }
+}
+
+module_init(scanlog_init);
+module_exit(scanlog_cleanup);
+MODULE_LICENSE("GPL");
index 1f71f23cc26d230b79787775a2720c71ce114db4..048ba910f028b98940f8b8b1316e665ad4be26d5 100644 (file)
@@ -36,7 +36,6 @@ ifneq ($(CONFIG_PPC_MERGE),y)
 obj-$(CONFIG_MODULES)          += ppc_ksyms.o
 endif
 obj-$(CONFIG_PPC_RTAS)         += rtas_pci.o
-obj-$(CONFIG_SCANLOG)          += scanlog.o
 obj-$(CONFIG_LPARCFG)          += lparcfg.o
 obj-$(CONFIG_HVC_CONSOLE)      += hvconsole.o
 ifneq ($(CONFIG_PPC_MERGE),y)
diff --git a/arch/ppc64/kernel/scanlog.c b/arch/ppc64/kernel/scanlog.c
deleted file mode 100644 (file)
index 2edc947..0000000
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- *  c 2001 PPC 64 Team, IBM Corp
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- *
- * scan-log-data driver for PPC64  Todd Inglett <tinglett@vnet.ibm.com>
- *
- * When ppc64 hardware fails the service processor dumps internal state
- * of the system.  After a reboot the operating system can access a dump
- * of this data using this driver.  A dump exists if the device-tree
- * /chosen/ibm,scan-log-data property exists.
- *
- * This driver exports /proc/ppc64/scan-log-dump which can be read.
- * The driver supports only sequential reads.
- *
- * The driver looks at a write to the driver for the single word "reset".
- * If given, the driver will reset the scanlog so the platform can free it.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <asm/uaccess.h>
-#include <asm/rtas.h>
-#include <asm/prom.h>
-
-#define MODULE_VERS "1.0"
-#define MODULE_NAME "scanlog"
-
-/* Status returns from ibm,scan-log-dump */
-#define SCANLOG_COMPLETE 0
-#define SCANLOG_HWERROR -1
-#define SCANLOG_CONTINUE 1
-
-#define DEBUG(A...) do { if (scanlog_debug) printk(KERN_ERR "scanlog: " A); } while (0)
-
-static int scanlog_debug;
-static unsigned int ibm_scan_log_dump;                 /* RTAS token */
-static struct proc_dir_entry *proc_ppc64_scan_log_dump;        /* The proc file */
-
-static ssize_t scanlog_read(struct file *file, char __user *buf,
-                           size_t count, loff_t *ppos)
-{
-        struct inode * inode = file->f_dentry->d_inode;
-       struct proc_dir_entry *dp;
-       unsigned int *data;
-       int status;
-       unsigned long len, off;
-       unsigned int wait_time;
-
-        dp = PDE(inode);
-       data = (unsigned int *)dp->data;
-
-       if (!data) {
-               printk(KERN_ERR "scanlog: read failed no data\n");
-               return -EIO;
-       }
-
-       if (count > RTAS_DATA_BUF_SIZE)
-               count = RTAS_DATA_BUF_SIZE;
-
-       if (count < 1024) {
-               /* This is the min supported by this RTAS call.  Rather
-                * than do all the buffering we insist the user code handle
-                * larger reads.  As long as cp works... :)
-                */
-               printk(KERN_ERR "scanlog: cannot perform a small read (%ld)\n", count);
-               return -EINVAL;
-       }
-
-       if (!access_ok(VERIFY_WRITE, buf, count))
-               return -EFAULT;
-
-       for (;;) {
-               wait_time = 500;        /* default wait if no data */
-               spin_lock(&rtas_data_buf_lock);
-               memcpy(rtas_data_buf, data, RTAS_DATA_BUF_SIZE);
-               status = rtas_call(ibm_scan_log_dump, 2, 1, NULL,
-                                  (u32) __pa(rtas_data_buf), (u32) count);
-               memcpy(data, rtas_data_buf, RTAS_DATA_BUF_SIZE);
-               spin_unlock(&rtas_data_buf_lock);
-
-               DEBUG("status=%d, data[0]=%x, data[1]=%x, data[2]=%x\n",
-                     status, data[0], data[1], data[2]);
-               switch (status) {
-                   case SCANLOG_COMPLETE:
-                       DEBUG("hit eof\n");
-                       return 0;
-                   case SCANLOG_HWERROR:
-                       DEBUG("hardware error reading scan log data\n");
-                       return -EIO;
-                   case SCANLOG_CONTINUE:
-                       /* We may or may not have data yet */
-                       len = data[1];
-                       off = data[2];
-                       if (len > 0) {
-                               if (copy_to_user(buf, ((char *)data)+off, len))
-                                       return -EFAULT;
-                               return len;
-                       }
-                       /* Break to sleep default time */
-                       break;
-                   default:
-                       if (status > 9900 && status <= 9905) {
-                               wait_time = rtas_extended_busy_delay_time(status);
-                       } else {
-                               printk(KERN_ERR "scanlog: unknown error from rtas: %d\n", status);
-                               return -EIO;
-                       }
-               }
-               /* Apparently no data yet.  Wait and try again. */
-               msleep_interruptible(wait_time);
-       }
-       /*NOTREACHED*/
-}
-
-static ssize_t scanlog_write(struct file * file, const char __user * buf,
-                            size_t count, loff_t *ppos)
-{
-       char stkbuf[20];
-       int status;
-
-       if (count > 19) count = 19;
-       if (copy_from_user (stkbuf, buf, count)) {
-               return -EFAULT;
-       }
-       stkbuf[count] = 0;
-
-       if (buf) {
-               if (strncmp(stkbuf, "reset", 5) == 0) {
-                       DEBUG("reset scanlog\n");
-                       status = rtas_call(ibm_scan_log_dump, 2, 1, NULL, 0, 0);
-                       DEBUG("rtas returns %d\n", status);
-               } else if (strncmp(stkbuf, "debugon", 7) == 0) {
-                       printk(KERN_ERR "scanlog: debug on\n");
-                       scanlog_debug = 1;
-               } else if (strncmp(stkbuf, "debugoff", 8) == 0) {
-                       printk(KERN_ERR "scanlog: debug off\n");
-                       scanlog_debug = 0;
-               }
-       }
-       return count;
-}
-
-static int scanlog_open(struct inode * inode, struct file * file)
-{
-       struct proc_dir_entry *dp = PDE(inode);
-       unsigned int *data = (unsigned int *)dp->data;
-
-       if (!data) {
-               printk(KERN_ERR "scanlog: open failed no data\n");
-               return -EIO;
-       }
-
-       if (data[0] != 0) {
-               /* This imperfect test stops a second copy of the
-                * data (or a reset while data is being copied)
-                */
-               return -EBUSY;
-       }
-
-       data[0] = 0;    /* re-init so we restart the scan */
-
-       return 0;
-}
-
-static int scanlog_release(struct inode * inode, struct file * file)
-{
-       struct proc_dir_entry *dp = PDE(inode);
-       unsigned int *data = (unsigned int *)dp->data;
-
-       if (!data) {
-               printk(KERN_ERR "scanlog: release failed no data\n");
-               return -EIO;
-       }
-       data[0] = 0;
-
-       return 0;
-}
-
-struct file_operations scanlog_fops = {
-       .owner          = THIS_MODULE,
-       .read           = scanlog_read,
-       .write          = scanlog_write,
-       .open           = scanlog_open,
-       .release        = scanlog_release,
-};
-
-int __init scanlog_init(void)
-{
-       struct proc_dir_entry *ent;
-
-       ibm_scan_log_dump = rtas_token("ibm,scan-log-dump");
-       if (ibm_scan_log_dump == RTAS_UNKNOWN_SERVICE) {
-               printk(KERN_ERR "scan-log-dump not implemented on this system\n");
-               return -EIO;
-       }
-
-        ent = create_proc_entry("ppc64/rtas/scan-log-dump",  S_IRUSR, NULL);
-       if (ent) {
-               ent->proc_fops = &scanlog_fops;
-               /* Ideally we could allocate a buffer < 4G */
-               ent->data = kmalloc(RTAS_DATA_BUF_SIZE, GFP_KERNEL);
-               if (!ent->data) {
-                       printk(KERN_ERR "Failed to allocate a buffer\n");
-                       remove_proc_entry("scan-log-dump", ent->parent);
-                       return -ENOMEM;
-               }
-               ((unsigned int *)ent->data)[0] = 0;
-       } else {
-               printk(KERN_ERR "Failed to create ppc64/scan-log-dump proc entry\n");
-               return -EIO;
-       }
-       proc_ppc64_scan_log_dump = ent;
-
-       return 0;
-}
-
-void __exit scanlog_cleanup(void)
-{
-       if (proc_ppc64_scan_log_dump) {
-               kfree(proc_ppc64_scan_log_dump->data);
-               remove_proc_entry("scan-log-dump", proc_ppc64_scan_log_dump->parent);
-       }
-}
-
-module_init(scanlog_init);
-module_exit(scanlog_cleanup);
-MODULE_LICENSE("GPL");