[PATCH] Cleanup ppc64 procfs code

From: Anton Blanchard <anton@samba.org>

Cleanup ppc64 procfs code:

- Use initcalls everywhere. This allowed us to remove the iseries proc
  callback interface.
- Kill proc_pmc.c. Most of it wasnt used (and we are planning to export the
  PMCs via sysfs). The few things left were iseries specific so they
  got moved into iSeries_proc.c.
- Kill pmc.c. We dont use those statistics and the ones that are left
  can be gained via PMCs.
- Create /proc/iSeries and /proc/ppc64 very early. This means we no
  longer have to call proc_ppc64_init in all the drivers, we can
  assume its there.
- Fix some error return cases in rtas-proc.c and rtas-flash
- Dont even try some pseries specific drivers on pmac.

arch/ppc/platforms/proc_rtas.c

@@ -20,6 +20,7 @@
 #include <linux/ctype.h>
 #include <linux/time.h>
 #include <linux/string.h>
+#include <linux/init.h>
 
 #include <asm/uaccess.h>
 #include <asm/bitops.h>
@@ -194,18 +195,18 @@ int check_location (char *c, int idx, char * buf);
 /* ****************************************************************** */
 /* MAIN                                                               */
 /* ****************************************************************** */
-void proc_rtas_init(void)
+static int __init proc_rtas_init(void)
 {
 	struct proc_dir_entry *entry;
 
 	rtas = find_devices("rtas");
 	if ((rtas == 0) || (_machine != _MACH_chrp)) {
-		return;
+		return 1;
 	}
 
 	proc_rtas = proc_mkdir("rtas", 0);
 	if (proc_rtas == 0)
-		return;
+		return 1;
 
 	/* /proc/rtas entries */
 
@@ -226,7 +227,10 @@ void proc_rtas_init(void)
 
 	entry = create_proc_entry("volume", S_IWUSR|S_IRUGO, proc_rtas);
 	if (entry) entry->proc_fops = &ppc_rtas_tone_volume_operations;
+
+	return 0;
 }
+__initcall(proc_rtas_init);
 
 /* ****************************************************************** */
 /* POWER-ON-TIME                                                      */

arch/ppc64/kernel/Makefile

@@ -9,7 +9,7 @@ obj-y               :=	setup.o entry.o traps.o irq.o idle.o dma.o \
 			time.o process.o signal.o syscalls.o misc.o ptrace.o \
 			align.o semaphore.o bitops.o stab.o pacaData.o \
 			udbg.o binfmt_elf32.o sys_ppc32.o ioctl32.o \
-			ptrace32.o signal32.o pmc.o rtc.o init_task.o \
+			ptrace32.o signal32.o rtc.o init_task.o \
 			lmb.o cputable.o cpu_setup_power4.o idle_power4.o \
 			iommu.o
 
@@ -29,7 +29,7 @@ obj-$(CONFIG_PPC_ISERIES) += iSeries_irq.o \
 			     HvCall.o HvLpConfig.o LparData.o mf_proc.o \
 			     iSeries_setup.o ItLpQueue.o hvCall.o \
 			     mf.o HvLpEvent.o iSeries_proc.o iSeries_htab.o \
-			     proc_pmc.o iSeries_iommu.o
+			     iSeries_iommu.o
 
 obj-$(CONFIG_PPC_PSERIES) += pSeries_pci.o pSeries_lpar.o pSeries_hvCall.o \
 			     eeh.o nvram.o pSeries_nvram.o rtasd.o ras.o \

arch/ppc64/kernel/iSeries_proc.c

 /*
  * iSeries_proc.c
  * Copyright (C) 2001  Kyle A. Lucke IBM Corporation
+ * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation
  *
  * 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
@@ -16,118 +17,146 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
 #include <linux/init.h>
-#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/paca.h>
+#include <asm/processor.h>
+#include <asm/time.h>
+#include <asm/naca.h>
+#include <asm/iSeries/ItLpPaca.h>
+#include <asm/iSeries/ItLpQueue.h>
+#include <asm/iSeries/HvCallXm.h>
+#include <asm/iSeries/IoHriMainStore.h>
+#include <asm/iSeries/LparData.h>
 #include <asm/iSeries/iSeries_proc.h>
 
-static struct proc_dir_entry *iSeries_proc_root;
-static int iSeries_proc_initializationDone;
-static spinlock_t iSeries_proc_lock;
+static int __init iseries_proc_create(void)
+{
+	struct proc_dir_entry *e = proc_mkdir("iSeries", 0);
+	if (!e)
+		return 1;
 
-struct iSeries_proc_registration {
-	struct iSeries_proc_registration *next;
-	iSeriesProcFunction functionMember;
+	return 0;
+}
+core_initcall(iseries_proc_create);
+
+static char *event_types[9] = {
+	"Hypervisor\t\t",
+	"Machine Facilities\t",
+	"Session Manager\t",
+	"SPD I/O\t\t",
+	"Virtual Bus\t\t",
+	"PCI I/O\t\t",
+	"RIO I/O\t\t",
+	"Virtual Lan\t\t",
+	"Virtual I/O\t\t"
 };
 
-struct iSeries_proc_registration preallocated[16];
-
-#define MYQUEUETYPE(T) struct MYQueue##T
-#define MYQUEUE(T) \
-MYQUEUETYPE(T) \
-{ \
-	struct T *head; \
-	struct T *tail; \
-}
-#define MYQUEUECTOR(q) do { (q)->head = NULL; (q)->tail = NULL; } while(0)
-#define MYQUEUEENQ(q, p) \
-do { \
-	(p)->next = NULL; \
-	if ((q)->head != NULL) { \
-		(q)->head->next = (p); \
-		(q)->head = (p); \
-	} else { \
-		(q)->tail = (q)->head = (p); \
-	} \
-} while(0)
-
-#define MYQUEUEDEQ(q,p) \
-do { \
-	(p) = (q)->tail; \
-	if ((p) != NULL) { \
-		(q)->tail = (p)->next; \
-		(p)->next = NULL; \
-	} \
-	if ((q)->tail == NULL) \
-		(q)->head = NULL; \
-} while(0)
-
-MYQUEUE(iSeries_proc_registration);
-typedef MYQUEUETYPE(iSeries_proc_registration) aQueue;
-
-static aQueue iSeries_free;
-static aQueue iSeries_queued;
-
-void iSeries_proc_early_init(void)
+static int proc_lpevents_show(struct seq_file *m, void *v)
 {
-	int i = 0;
-	unsigned long flags;
-
-	iSeries_proc_initializationDone = 0;
-	spin_lock_init(&iSeries_proc_lock);
-	MYQUEUECTOR(&iSeries_free);
-	MYQUEUECTOR(&iSeries_queued);
-
-	spin_lock_irqsave(&iSeries_proc_lock, flags);
-	for (i = 0; i < 16; ++i)
-		MYQUEUEENQ(&iSeries_free, preallocated + i);
-	spin_unlock_irqrestore(&iSeries_proc_lock, flags);
+	unsigned int i;
+
+	seq_printf(m, "LpEventQueue 0\n");
+	seq_printf(m, "  events processed:\t%lu\n",
+		   (unsigned long)xItLpQueue.xLpIntCount);
+
+	for (i = 0; i < 9; ++i)
+		seq_printf(m, "    %s %10lu\n", event_types[i],
+			   (unsigned long)xItLpQueue.xLpIntCountByType[i]);
+
+	seq_printf(m, "\n  events processed by processor:\n");
+
+	for_each_online_cpu(i)
+		seq_printf(m, "    CPU%02d  %10u\n", i, paca[i].lpEvent_count);
+
+	return 0;
 }
 
-static int iSeries_proc_create(void)
+static int proc_lpevents_open(struct inode *inode, struct file *file)
 {
-	unsigned long flags;
-	struct iSeries_proc_registration *reg;
+	return single_open(file, proc_lpevents_show, NULL);
+}
 
-	printk("iSeries_proc: Creating /proc/iSeries\n");
+static struct file_operations proc_lpevents_operations = {
+	.open		= proc_lpevents_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
-	spin_lock_irqsave(&iSeries_proc_lock, flags);
-	iSeries_proc_root = proc_mkdir("iSeries", 0);
-	if (!iSeries_proc_root)
-		goto out;
+static unsigned long startTitan = 0;
+static unsigned long startTb = 0;
 
-	MYQUEUEDEQ(&iSeries_queued, reg);
-	while (reg != NULL) {
-		(*(reg->functionMember))(iSeries_proc_root);
-		MYQUEUEDEQ(&iSeries_queued, reg);
+static int proc_titantod_show(struct seq_file *m, void *v)
+{
+	unsigned long tb0, titan_tod;
+
+	tb0 = get_tb();
+	titan_tod = HvCallXm_loadTod();
+
+	seq_printf(m, "Titan\n" );
+	seq_printf(m, "  time base =          %016lx\n", tb0);
+	seq_printf(m, "  titan tod =          %016lx\n", titan_tod);
+	seq_printf(m, "  xProcFreq =          %016x\n",
+		   xIoHriProcessorVpd[0].xProcFreq);
+	seq_printf(m, "  xTimeBaseFreq =      %016x\n",
+		   xIoHriProcessorVpd[0].xTimeBaseFreq);
+	seq_printf(m, "  tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy);
+	seq_printf(m, "  tb_ticks_per_usec  = %lu\n", tb_ticks_per_usec);
+
+	if (!startTitan) {
+		startTitan = titan_tod;
+		startTb = tb0;
+	} else {
+		unsigned long titan_usec = (titan_tod - startTitan) >> 12;
+		unsigned long tb_ticks = (tb0 - startTb);
+		unsigned long titan_jiffies = titan_usec / (1000000/HZ);
+		unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ);
+		unsigned long titan_jiff_rem_usec = titan_usec - titan_jiff_usec;
+		unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy;
+		unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy;
+		unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks;
+		unsigned long tb_jiff_rem_usec = tb_jiff_rem_ticks / tb_ticks_per_usec;
+		unsigned long new_tb_ticks_per_jiffy = (tb_ticks * (1000000/HZ))/titan_usec;
+
+		seq_printf(m, "  titan elapsed = %lu uSec\n", titan_usec);
+		seq_printf(m, "  tb elapsed    = %lu ticks\n", tb_ticks);
+		seq_printf(m, "  titan jiffies = %lu.%04lu \n", titan_jiffies,
+			   titan_jiff_rem_usec);
+		seq_printf(m, "  tb jiffies    = %lu.%04lu\n", tb_jiffies,
+			   tb_jiff_rem_usec);
+		seq_printf(m, "  new tb_ticks_per_jiffy = %lu\n",
+			   new_tb_ticks_per_jiffy);
 	}
 
-	iSeries_proc_initializationDone = 1;
-out:
-	spin_unlock_irqrestore(&iSeries_proc_lock, flags);
 	return 0;
 }
 
-arch_initcall(iSeries_proc_create);
+static int proc_titantod_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, proc_titantod_show, NULL);
+}
+
+static struct file_operations proc_titantod_operations = {
+	.open		= proc_titantod_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
-void iSeries_proc_callback(iSeriesProcFunction initFunction)
+static int __init iseries_proc_init(void)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&iSeries_proc_lock, flags);
-	if (iSeries_proc_initializationDone)
-		(*initFunction)(iSeries_proc_root);
-	else {
-		struct iSeries_proc_registration *reg = NULL;
-
-		MYQUEUEDEQ(&iSeries_free, reg);
-		if (reg != NULL) {
-			reg->functionMember = initFunction;
-			MYQUEUEENQ(&iSeries_queued, reg);
-		} else
-			printk("Couldn't get a queue entry\n");
-	}
-	spin_unlock_irqrestore(&iSeries_proc_lock, flags);
+	struct proc_dir_entry *e;
+
+	e = create_proc_entry("iSeries/lpevents", S_IFREG|S_IRUGO, NULL);
+	if (e)
+		e->proc_fops = &proc_lpevents_operations;
+
+	e = create_proc_entry("iSeries/titanTod", S_IFREG|S_IRUGO, NULL);
+	if (e)
+		e->proc_fops = &proc_titantod_operations;
+
+	return 0;
 }
-EXPORT_SYMBOL(iSeries_proc_callback);
+__initcall(iseries_proc_init);

arch/ppc64/kernel/iSeries_setup.c

@@ -51,7 +51,6 @@
 #include <asm/iSeries/ItLpQueue.h>
 #include <asm/iSeries/IoHriMainStore.h>
 #include <asm/iSeries/iSeries_proc.h>
-#include <asm/proc_pmc.h>
 #include <asm/iSeries/mf.h>
 
 /* Function Prototypes */
@@ -393,12 +392,9 @@ void __init iSeries_init(unsigned long r3, unsigned long r4, unsigned long r5,
 
 	iSeries_setup_dprofile();
 
-	iSeries_proc_early_init();
 	mf_init();
 	mf_initialized = 1;
 	mb();
-
-	iSeries_proc_callback(&pmc_proc_init);
 }
 
 /*

arch/ppc64/kernel/mf.c

@@ -37,7 +37,6 @@
 #include <asm/nvram.h>
 #include <asm/time.h>
 #include <asm/iSeries/ItSpCommArea.h>
-#include <asm/iSeries/iSeries_proc.h>
 #include <asm/uaccess.h>
 #include <linux/dma-mapping.h>
 #include <linux/bcd.h>
@@ -683,8 +682,6 @@ void mf_init(void)
 
 	/* initialization complete */
 	printk(KERN_NOTICE "mf.c: iSeries Linux LPAR Machine Facilities initialized\n");
-
-	iSeries_proc_callback(&mf_proc_init);
 }
 
 void mf_setSide(char side)

arch/ppc64/kernel/mf_proc.c

@@ -16,11 +16,10 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
+#include <linux/init.h>
 #include <asm/uaccess.h>
 #include <asm/iSeries/mf.h>
 
-static struct proc_dir_entry *mf_proc_root = NULL;
-
 static int proc_mf_dump_cmdline(char *page, char **start, off_t off,
 		int count, int *eof, void *data)
 {
@@ -187,27 +186,28 @@ static int proc_mf_change_vmlinux(struct file *file, const char *buffer,
 	return count;			
 }
 
-void mf_proc_init(struct proc_dir_entry *iSeries_proc)
+static int __init mf_proc_init(void)
 {
+	struct proc_dir_entry *mf_proc_root;
 	struct proc_dir_entry *ent;
 	struct proc_dir_entry *mf;
 	char name[2];
 	int i;
 
-	mf_proc_root = proc_mkdir("mf", iSeries_proc);
+	mf_proc_root = proc_mkdir("iSeries/mf", NULL);
 	if (!mf_proc_root)
-		return;
+		return 1;
 
 	name[1] = '\0';
 	for (i = 0; i < 4; i++) {
 		name[0] = 'A' + i;
 		mf = proc_mkdir(name, mf_proc_root);
 		if (!mf)
-			return;
+			return 1;
 
 		ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf);
 		if (!ent)
-			return;
+			return 1;
 		ent->nlink = 1;
 		ent->data = (void *)(long)i;
 		ent->read_proc = proc_mf_dump_cmdline;
@@ -218,7 +218,7 @@ void mf_proc_init(struct proc_dir_entry *iSeries_proc)
 
 		ent = create_proc_entry("vmlinux", S_IFREG|S_IWUSR, mf);
 		if (!ent)
-			return;
+			return 1;
 		ent->nlink = 1;
 		ent->data = (void *)(long)i;
 #if 0
@@ -239,7 +239,7 @@ void mf_proc_init(struct proc_dir_entry *iSeries_proc)
 
 	ent = create_proc_entry("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
 	if (!ent)
-		return;
+		return 1;
 	ent->nlink = 1;
 	ent->data = (void *)0;
 	ent->read_proc = proc_mf_dump_side;
@@ -247,9 +247,13 @@ void mf_proc_init(struct proc_dir_entry *iSeries_proc)
 
 	ent = create_proc_entry("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
 	if (!ent)
-		return;
+		return 1;
 	ent->nlink = 1;
 	ent->data = (void *)0;
 	ent->read_proc = proc_mf_dump_src;
 	ent->write_proc = proc_mf_change_src;
+
+	return 0;
 }
+
+__initcall(mf_proc_init);

arch/ppc64/kernel/pmc.c

-/*
- * pmc.c
- * Copyright (C) 2001 Dave Engebretsen & Mike Corrigan IBM Corporation
- * 
- * 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.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-/* Change Activity:
- * 2001/06/05 : engebret : Created.
- * End Change Activity 
- */
-
-#include <asm/proc_fs.h>
-#include <asm/paca.h>
-#include <asm/iSeries/ItLpPaca.h>
-#include <asm/iSeries/ItLpQueue.h>
-#include <asm/processor.h>
-
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <asm/pmc.h>
-#include <asm/uaccess.h>
-#include <asm/naca.h>
-
-struct _pmc_sw pmc_sw_system = {
-	0  
-};
-
-struct _pmc_sw pmc_sw_cpu[NR_CPUS] = {
-	{0 }, 
-};
-
-/*
- * Provide enough storage for either system level counters or
- * one cpu's counters.
- */
-struct _pmc_sw_text pmc_sw_text;
-struct _pmc_hw_text pmc_hw_text;
-
-char *
-ppc64_pmc_stab(int file)
-{
-	int  n;
-	unsigned long stab_faults, stab_capacity_castouts, stab_invalidations; 
-	unsigned long i;
-
-	stab_faults = stab_capacity_castouts = stab_invalidations = n = 0;
-
-	if (file == -1) {
-		for (i = 0;  i < NR_CPUS; i++) {
-			if (!cpu_online(i))
-				continue;
-			stab_faults += pmc_sw_cpu[i].stab_faults;
-			stab_capacity_castouts += pmc_sw_cpu[i].stab_capacity_castouts;
-			stab_invalidations += pmc_sw_cpu[i].stab_invalidations;
-		}
-		n += sprintf(pmc_sw_text.buffer + n,    
-			     "Faults         0x%lx\n", stab_faults); 
-		n += sprintf(pmc_sw_text.buffer + n, 
-			     "Castouts       0x%lx\n", stab_capacity_castouts); 
-		n += sprintf(pmc_sw_text.buffer + n, 
-			     "Invalidations  0x%lx\n", stab_invalidations); 
-	} else {
-		n += sprintf(pmc_sw_text.buffer + n,
-			     "Faults         0x%lx\n", 
-			     pmc_sw_cpu[file].stab_faults);
-		
-		n += sprintf(pmc_sw_text.buffer + n,   
-			     "Castouts       0x%lx\n", 
-			     pmc_sw_cpu[file].stab_capacity_castouts);
-		
-		n += sprintf(pmc_sw_text.buffer + n,   
-			     "Invalidations  0x%lx\n", 
-			     pmc_sw_cpu[file].stab_invalidations);
-
-		for (i = 0; i < STAB_ENTRY_MAX; i++) {
-			if (pmc_sw_cpu[file].stab_entry_use[i]) {
-				n += sprintf(pmc_sw_text.buffer + n,   
-					     "Entry %02ld       0x%lx\n", i, 
-					     pmc_sw_cpu[file].stab_entry_use[i]);
-			}
-		}
-
-	}
-
-	return(pmc_sw_text.buffer); 
-}
-
-char *
-ppc64_pmc_htab(int file)
-{
-	int  n;
-	unsigned long htab_primary_overflows, htab_capacity_castouts;
-	unsigned long htab_read_to_write_faults; 
-
-	htab_primary_overflows = htab_capacity_castouts = 0;
-	htab_read_to_write_faults = n = 0;
-
-	if (file == -1) {
-		n += sprintf(pmc_sw_text.buffer + n,    
-			     "Primary Overflows  0x%lx\n", 
-			     pmc_sw_system.htab_primary_overflows); 
-		n += sprintf(pmc_sw_text.buffer + n, 
-			     "Castouts           0x%lx\n", 
-			     pmc_sw_system.htab_capacity_castouts); 
-	} else {
-		n += sprintf(pmc_sw_text.buffer + n,
-			     "Primary Overflows  N/A\n");
-
-		n += sprintf(pmc_sw_text.buffer + n,   
-			     "Castouts           N/A\n\n");
-
-	}
-	
-	return(pmc_sw_text.buffer); 
-}
-
-char *
-ppc64_pmc_hw(int file)
-{
-	int  n;
-
-	n = 0;
-	if (file == -1) {
-		n += sprintf(pmc_hw_text.buffer + n, "Not Implemented\n");
-	} else {
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "MMCR0  0x%lx\n", mfspr(MMCR0)); 
-		n += sprintf(pmc_hw_text.buffer + n, 
-			     "MMCR1  0x%lx\n", mfspr(MMCR1)); 
-#if 0
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "MMCRA  0x%lx\n", mfspr(MMCRA)); 
-#endif
-
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC1   0x%lx\n", mfspr(PMC1)); 
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC2   0x%lx\n", mfspr(PMC2)); 
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC3   0x%lx\n", mfspr(PMC3)); 
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC4   0x%lx\n", mfspr(PMC4)); 
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC5   0x%lx\n", mfspr(PMC5)); 
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC6   0x%lx\n", mfspr(PMC6)); 
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC7   0x%lx\n", mfspr(PMC7)); 
-		n += sprintf(pmc_hw_text.buffer + n,    
-			     "PMC8   0x%lx\n", mfspr(PMC8)); 
-	}
-
-	return(pmc_hw_text.buffer); 
-}

arch/ppc64/kernel/ppc_ksyms.c

@@ -40,7 +40,6 @@
 #include <asm/hw_irq.h>
 #include <asm/abs_addr.h>
 #include <asm/cacheflush.h>
-#include <asm/proc_fs.h>
 #ifdef CONFIG_PPC_ISERIES
 #include <asm/iSeries/HvCallSc.h>
 #endif
@@ -164,6 +163,5 @@ EXPORT_SYMBOL(console_drivers);
 
 EXPORT_SYMBOL(tb_ticks_per_usec);
 EXPORT_SYMBOL(paca);
-EXPORT_SYMBOL(proc_ppc64);
 EXPORT_SYMBOL(cur_cpu_spec);
 EXPORT_SYMBOL(systemcfg);

arch/ppc64/kernel/proc_pmc.c

-/*
- * proc_pmc.c
- * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation
- * 
- * 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.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-
-/* Change Activity:
- * 2001       : mikec    : Created
- * 2001/06/05 : engebret : Software event count support.
- * End Change Activity 
- */
-
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-
-#include <asm/proc_fs.h>
-#include <asm/paca.h>
-#include <asm/iSeries/ItLpPaca.h>
-#include <asm/iSeries/ItLpQueue.h>
-#include <asm/iSeries/HvCallXm.h>
-#include <asm/iSeries/IoHriMainStore.h>
-#include <asm/processor.h>
-#include <asm/time.h>
-#include <asm/iSeries/LparData.h>
-#include <asm/pmc.h>
-#include <asm/uaccess.h>
-#include <asm/naca.h>
-#include <asm/rtas.h>
-
-
-static int proc_pmc_control_mode = 0;
-
-static struct proc_dir_entry *proc_ppc64_pmc_system_root = NULL;
-static struct proc_dir_entry *proc_ppc64_pmc_cpu_root[NR_CPUS] = {NULL, };
-
-static spinlock_t proc_ppc64_lock;
-int proc_ppc64_pmc_find_file(void *data);
-int proc_ppc64_pmc_read(char *page, char **start, off_t off,
-			int count, int *eof, char *buffer);
-int proc_ppc64_pmc_stab_read(char *page, char **start, off_t off,
-			     int count, int *eof, void *data);
-int proc_ppc64_pmc_htab_read(char *page, char **start, off_t off,
-			     int count, int *eof, void *data);
-int proc_ppc64_pmc_hw_read(char *page, char **start, off_t off, 
-			   int count, int *eof, void *data);
-
-static struct proc_dir_entry *pmc_proc_root = NULL;
-
-int proc_get_lpevents( char *page, char **start, off_t off, int count, int *eof, void *data);
-int proc_reset_lpevents( struct file *file, const char *buffer, unsigned long count, void *data);
-
-int proc_get_titanTod( char *page, char **start, off_t off, int count, int *eof, void *data);
-
-int proc_pmc_get_control( char *page, char **start, off_t off, int count, int *eof, void *data);
-
-int proc_pmc_set_control( struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_mmcr0( struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_mmcr1( struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_mmcra( struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc1(  struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc2(  struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc3(  struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc4(  struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc5(  struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc6(  struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc7(  struct file *file, const char *buffer, unsigned long count, void *data);
-int proc_pmc_set_pmc8(  struct file *file, const char *buffer, unsigned long count, void *data);
-
-#if 0
-int proc_ppc64_init(void)
-{
-	unsigned long i;
-	struct proc_dir_entry *ent = NULL;
-	char buf[256];
-
-	printk("proc_ppc64: Creating /proc/ppc64/pmc\n");
-
-	/*
-	 * Create the root, system, and cpu directories as follows:
-	 *   /proc/ppc64/pmc/system 
-	 *   /proc/ppc64/pmc/cpu0 
-	 */
-	spin_lock(&proc_ppc64_lock);
-	if (proc_ppc64.root == NULL) {
-		proc_ppc64_init();
-		if (!proc_ppc64.root) {
-			spin_unlock(&proc_ppc64_lock);
-			return;
-		}
-	}
-	spin_unlock(&proc_ppc64_lock);
-
-	/* Placeholder for rtas interfaces. */
-	if (proc_ppc64.rtas == NULL) {
-		return;
-	}
-
-	proc_ppc64_pmc_root = proc_mkdir("pmc", proc_ppc64.root);
-
-	proc_ppc64_pmc_system_root = proc_mkdir("system", proc_ppc64_pmc_root);
-	for (i = 0; i < NR_CPUS; i++) {
-		if (cpu_online(i)) {
-			sprintf(buf, "cpu%ld", i); 
-			proc_ppc64_pmc_cpu_root[i] =
-				proc_mkdir(buf, proc_ppc64_pmc_root);
-		}
-	}
-
-	/* Create directories for the software counters. */
-	for (i = 0; i < NR_CPUS; i++) {
-		if (!cpu_online(i))
-			continue;
-		ent = create_proc_entry("stab", S_IRUGO | S_IWUSR, 
-					proc_ppc64_pmc_cpu_root[i]);
-		if (ent) {
-			ent->nlink = 1;
-			ent->data = (void *)proc_ppc64_pmc_cpu_root[i];
-			ent->read_proc = (void *)proc_ppc64_pmc_stab_read;
-			ent->write_proc = NULL;
-		}
-
-		ent = create_proc_entry("htab", S_IRUGO | S_IWUSR, 
-					proc_ppc64_pmc_cpu_root[i]);
-		if (ent) {
-			ent->nlink = 1;
-			ent->data = (void *)proc_ppc64_pmc_cpu_root[i];
-			ent->read_proc = (void *)proc_ppc64_pmc_htab_read;
-			ent->write_proc = NULL;
-		}
-	}
-
-	ent = create_proc_entry("stab", S_IRUGO | S_IWUSR, 
-				proc_ppc64_pmc_system_root);
-	if (ent) {
-		ent->nlink = 1;
-		ent->data = (void *)proc_ppc64_pmc_system_root;
-		ent->read_proc = (void *)proc_ppc64_pmc_stab_read;
-		ent->write_proc = NULL;
-	}
-
-	ent = create_proc_entry("htab", S_IRUGO | S_IWUSR, 
-				proc_ppc64_pmc_system_root);
-	if (ent) {
-		ent->nlink = 1;
-		ent->data = (void *)proc_ppc64_pmc_system_root;
-		ent->read_proc = (void *)proc_ppc64_pmc_htab_read;
-		ent->write_proc = NULL;
-	}
-
-	/* Create directories for the hardware counters. */
-	for (i = 0; i < NR_CPUS; i++) {
-		if (!cpu_online(i))
-			continue;
-		ent = create_proc_entry("hardware", S_IRUGO | S_IWUSR, 
-					proc_ppc64_pmc_cpu_root[i]);
-		if (ent) {
-			ent->nlink = 1;
-			ent->data = (void *)proc_ppc64_pmc_cpu_root[i];
-			ent->read_proc = (void *)proc_ppc64_pmc_hw_read;
-			ent->write_proc = NULL;
-		}
-	}
-
-	ent = create_proc_entry("hardware", S_IRUGO | S_IWUSR, 
-				proc_ppc64_pmc_system_root);
-	if (ent) {
-		ent->nlink = 1;
-		ent->data = (void *)proc_ppc64_pmc_system_root;
-		ent->read_proc = (void *)proc_ppc64_pmc_hw_read;
-		ent->write_proc = NULL;
-	}
-}
-#endif
-
-/*
- * Find the requested 'file' given a proc token.
- *
- * Inputs: void * data: proc token
- * Output: int        : (0, ..., +N) = CPU number.
- *                      -1           = System.
- */
-int proc_ppc64_pmc_find_file(void *data)
-{
-	int i;
-
-	if ((unsigned long)data == 
-	   (unsigned long) proc_ppc64_pmc_system_root) {
-		return(-1); 
-	} else {
-		for (i = 0; i < NR_CPUS; i++) {
-			if (!cpu_online(i))
-				continue;
-			if ((unsigned long)data ==
-			   (unsigned long)proc_ppc64_pmc_cpu_root[i]) {
-				return(i); 
-			}
-		}
-	}
-
-	/* On error, just default to a type of system. */
-	printk("proc_ppc64_pmc_find_file: failed to find file token.\n"); 
-	return(-1); 
-}
-
-int 
-proc_ppc64_pmc_read(char *page, char **start, off_t off, 
-		    int count, int *eof, char *buffer)
-{
-	int buffer_size, n;
-
-	if (count < 0) return 0;
-
-	if (buffer == NULL) {
-		*eof = 1;
-		return 0;
-	}
-
-	/* Check for read beyond EOF */
-	buffer_size = n = strlen(buffer);
-	if (off >= buffer_size) {
-		*eof = 1;
-		return 0;
-	}
-	if (n > (buffer_size - off)) n = buffer_size - off;
-
-	/* Never return more than was requested */
-	if (n > count) {
-		n = count;
-	} else {
-		*eof = 1;
-	}
-
-	memcpy(page, buffer + off, n);
-
-	*start = page;
-
-	return n;
-}
-
-int 
-proc_ppc64_pmc_stab_read(char *page, char **start, off_t off, 
-			 int count, int *eof, void *data)
-{
-	int n, file;
-	char *buffer = NULL;
-
-	if (count < 0) return 0;
-	spin_lock(&proc_ppc64_lock);
-
-	/* Figure out which file is being request. */
-	file = proc_ppc64_pmc_find_file(data);
-
-	/* Update the counters and the text buffer representation. */
-	buffer = ppc64_pmc_stab(file);
-
-	/* Put the data into the requestor's buffer. */
-	n = proc_ppc64_pmc_read(page, start, off, count, eof, buffer); 
-
-	spin_unlock(&proc_ppc64_lock);
-	return n;
-}
-
-int 
-proc_ppc64_pmc_htab_read(char *page, char **start, off_t off, 
-			 int count, int *eof, void *data)
-{
-	int n, file;
-	char *buffer = NULL;
-
-	if (count < 0) return 0;
-	spin_lock(&proc_ppc64_lock);
-
-	/* Figure out which file is being request. */
-	file = proc_ppc64_pmc_find_file(data);
-
-	/* Update the counters and the text buffer representation. */
-	buffer = ppc64_pmc_htab(file);
-
-	/* Put the data into the requestor's buffer. */
-	n = proc_ppc64_pmc_read(page, start, off, count, eof, buffer);
-
-	spin_unlock(&proc_ppc64_lock);
-	return n;
-}
-
-int 
-proc_ppc64_pmc_hw_read(char *page, char **start, off_t off, 
-			     int count, int *eof, void *data)
-{
-	int n, file;
-	char *buffer = NULL;
-
-	if (count < 0) return 0;
-	spin_lock(&proc_ppc64_lock);
-
-	/* Figure out which file is being request. */
-	file = proc_ppc64_pmc_find_file(data);
-
-	/* Update the counters and the text buffer representation. */
-	buffer = ppc64_pmc_hw(file);
-
-	/* Put the data into the requestor's buffer. */
-	n = proc_ppc64_pmc_read(page, start, off, count, eof, buffer);
-
-	spin_unlock(&proc_ppc64_lock);
-	return n;
-}
-
-/* 
- * DRENG the remainder of these functions still need work ...
- */
-void pmc_proc_init(struct proc_dir_entry *iSeries_proc)
-{
-    struct proc_dir_entry *ent = NULL;
-
-    ent = create_proc_entry("lpevents", S_IFREG|S_IRUGO, iSeries_proc);
-    if (!ent) return;
-    ent->nlink = 1;
-    ent->data = (void *)0;
-    ent->read_proc = proc_get_lpevents;
-    ent->write_proc = proc_reset_lpevents;
-
-    ent = create_proc_entry("titanTod", S_IFREG|S_IRUGO, iSeries_proc);
-    if (!ent) return;
-    ent->nlink = 1;
-    ent->data = (void *)0;
-    ent->size = 0;
-    ent->read_proc = proc_get_titanTod;
-    ent->write_proc = NULL;
-
-    pmc_proc_root = proc_mkdir("pmc", iSeries_proc);
-    if (!pmc_proc_root) return;
-
-    ent = create_proc_entry("control", S_IFREG|S_IRUSR|S_IWUSR, pmc_proc_root);
-    if (!ent) return;
-    ent->nlink = 1;
-    ent->data = (void *)0;
-    ent->read_proc = proc_pmc_get_control;
-    ent->write_proc = proc_pmc_set_control;
-
-}
-
-static int pmc_calc_metrics( char *page, char **start, off_t off, int count, int *eof, int len)
-{
-	if ( len <= off+count)
-		*eof = 1;
-	*start = page+off;
-	len -= off;
-	if ( len > count )
-		len = count;
-	if ( len < 0 )
-		len = 0;
-	return len;
-}
-
-static char * lpEventTypes[9] = {
-	"Hypervisor\t\t",
-	"Machine Facilities\t",
-	"Session Manager\t",
-	"SPD I/O\t\t",
-	"Virtual Bus\t\t",
-	"PCI I/O\t\t",
-	"RIO I/O\t\t",
-	"Virtual Lan\t\t",
-	"Virtual I/O\t\t"
-	};
-	
-
-int proc_get_lpevents
-(char *page, char **start, off_t off, int count, int *eof, void *data)
-{
-	unsigned i;
-	int len = 0;
-
-	len += sprintf( page+len, "LpEventQueue 0\n" );
-	len += sprintf( page+len, "  events processed:\t%lu\n",
-			(unsigned long)xItLpQueue.xLpIntCount );
-	for (i=0; i<9; ++i) {
-		len += sprintf( page+len, "    %s %10lu\n",
-			lpEventTypes[i],
-			(unsigned long)xItLpQueue.xLpIntCountByType[i] );
-	}
-	len += sprintf( page+len, "\n  events processed by processor:\n" );
-	for (i = 0; i < NR_CPUS; ++i) {
-		if (cpu_online(i))
-			len += sprintf( page+len, "    CPU%02d  %10u\n",
-				i, paca[i].lpEvent_count );
-	}
-
-	return pmc_calc_metrics( page, start, off, count, eof, len );
-
-}
-
-int proc_reset_lpevents( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	return count;
-}
-
-static unsigned long startTitan = 0;
-static unsigned long startTb = 0;
-
-
-int proc_get_titanTod
-(char *page, char **start, off_t off, int count, int *eof, void *data)
-{
-	int len = 0;
-	unsigned long tb0, titan_tod;
-
-	tb0 = get_tb();
-	titan_tod = HvCallXm_loadTod();
-
-	len += sprintf( page+len, "Titan\n" );
-	len += sprintf( page+len, "  time base =          %016lx\n", tb0 );
-	len += sprintf( page+len, "  titan tod =          %016lx\n", titan_tod );
-	len += sprintf( page+len, "  xProcFreq =          %016x\n", xIoHriProcessorVpd[0].xProcFreq );
-	len += sprintf( page+len, "  xTimeBaseFreq =      %016x\n", xIoHriProcessorVpd[0].xTimeBaseFreq );
-	len += sprintf( page+len, "  tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy );
-	len += sprintf( page+len, "  tb_ticks_per_usec  = %lu\n", tb_ticks_per_usec );
-
-	if ( !startTitan ) {
-		startTitan = titan_tod;
-		startTb = tb0;
-	}
-	else {
-		unsigned long titan_usec = (titan_tod - startTitan) >> 12;
-		unsigned long tb_ticks = (tb0 - startTb);
-		unsigned long titan_jiffies = titan_usec / (1000000/HZ);
-		unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ);
-		unsigned long titan_jiff_rem_usec = titan_usec - titan_jiff_usec;
-		unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy;
-		unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy;
-		unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks;
-		unsigned long tb_jiff_rem_usec = tb_jiff_rem_ticks / tb_ticks_per_usec;
-		unsigned long new_tb_ticks_per_jiffy = (tb_ticks * (1000000/HZ))/titan_usec;
-		
-		len += sprintf( page+len, "  titan elapsed = %lu uSec\n", titan_usec);
-		len += sprintf( page+len, "  tb elapsed    = %lu ticks\n", tb_ticks);
-		len += sprintf( page+len, "  titan jiffies = %lu.%04lu \n", titan_jiffies, titan_jiff_rem_usec );				
-		len += sprintf( page+len, "  tb jiffies    = %lu.%04lu\n", tb_jiffies, tb_jiff_rem_usec );
-		len += sprintf( page+len, "  new tb_ticks_per_jiffy = %lu\n", new_tb_ticks_per_jiffy );	
-
-	}
-	
-	return pmc_calc_metrics( page, start, off, count, eof, len );
-}
-	
-int proc_pmc_get_control
-(char *page, char **start, off_t off, int count, int *eof, void *data)
-{
-	int len = 0;
-
-	if ( proc_pmc_control_mode == PMC_CONTROL_CPI ) {
-		unsigned long mach_cycles   = mfspr( PMC5 );
-		unsigned long inst_complete = mfspr( PMC4 );
-		unsigned long inst_dispatch = mfspr( PMC3 );
-		unsigned long thread_active_run = mfspr( PMC1 );
-		unsigned long thread_active  = mfspr( PMC2 );
-		unsigned long cpi = 0;
-		unsigned long cpithou = 0;
-		unsigned long remain;
-	
-		if ( inst_complete ) {
-			cpi = thread_active_run / inst_complete;
-			remain = thread_active_run % inst_complete;
-			if ( inst_complete > 1000000 ) 
-				cpithou = remain / ( inst_complete / 1000 );
-			else 
-				cpithou = ( remain * 1000 ) / inst_complete;
-		}
-		len += sprintf( page+len, "PMC CPI Mode\nRaw Counts\n" );
-		len += sprintf( page+len, "machine cycles           : %12lu\n", mach_cycles );
-		len += sprintf( page+len, "thread active cycles     : %12lu\n\n", thread_active );
-
-		len += sprintf( page+len, "instructions completed   : %12lu\n", inst_complete );
-		len += sprintf( page+len, "instructions dispatched  : %12lu\n", inst_dispatch );
-		len += sprintf( page+len, "thread active run cycles : %12lu\n", thread_active_run );
-
-		len += sprintf( page+len, "thread active run cycles/instructions completed\n" );
-		len += sprintf( page+len, "CPI = %lu.%03lu\n", cpi, cpithou );
-		
-	}
-	else if ( proc_pmc_control_mode == PMC_CONTROL_TLB ) {
-		len += sprintf( page+len, "PMC TLB Mode\n" );
-		len += sprintf( page+len, "I-miss count             : %12lu\n", mfspr( PMC1 ) );
-		len += sprintf( page+len, "I-miss latency           : %12lu\n", mfspr( PMC2 ) );
-		len += sprintf( page+len, "D-miss count             : %12lu\n", mfspr( PMC3 ) );
-		len += sprintf( page+len, "D-miss latency           : %12lu\n", mfspr( PMC4 ) );
-		len += sprintf( page+len, "IERAT miss count         : %12lu\n", mfspr( PMC5 ) );
-		len += sprintf( page+len, "D-reference count        : %12lu\n", mfspr( PMC6 ) );
-		len += sprintf( page+len, "miss PTEs searched       : %12lu\n", mfspr( PMC7 ) );
-		len += sprintf( page+len, "miss >8 PTEs searched    : %12lu\n", mfspr( PMC8 ) );
-	}
-	/* IMPLEMENT ME */
-	return pmc_calc_metrics( page, start, off, count, eof, len );
-}
-
-unsigned long proc_pmc_conv_int( const char *buf, unsigned count )
-{
-	const char * p;
-	char b0, b1;
-	unsigned v, multiplier, mult, i;
-	unsigned long val;
-	multiplier = 10;
-	p = buf;
-	if ( count >= 3 ) {
-		b0 = buf[0];
-		b1 = buf[1];
-		if ( ( b0 == '0' ) &&
-		     ( ( b1 == 'x' ) || ( b1 == 'X' ) ) ) {
-			p = buf + 2;
-			count -= 2;
-			multiplier = 16;
-		}
-			
-	}
-	val = 0;
-	for ( i=0; i<count; ++i ) {
-		b0 = *p++;
-		v = 0;
-		mult = multiplier;
-		if ( ( b0 >= '0' ) && ( b0 <= '9' ) ) 
-			v = b0 - '0';
-		else if ( multiplier == 16 ) {
-			if ( ( b0 >= 'a' ) && ( b0 <= 'f' ) )
-				v = b0 - 'a' + 10;
-			else if ( ( b0 >= 'A' ) && ( b0 <= 'F' ) )
-				v = b0 - 'A' + 10;
-			else 
-				mult = 1;
-		}
-		else
-			mult = 1;
-		val *= mult;
-		val += v;
-	}
-
-	return val;
-
-}
-
-static inline void proc_pmc_stop(void)
-{
-	/* Freeze all counters, leave everything else alone */
-	mtspr( MMCR0, mfspr( MMCR0 ) | 0x80000000 );
-}
-
-static inline void proc_pmc_start(void)
-{
-	/* Unfreeze all counters, leave everything else alone */
-	mtspr( MMCR0, mfspr( MMCR0 ) & ~0x80000000 );
-
-}
-
-static inline void proc_pmc_reset(void)
-{
-	/* Clear all the PMCs to zeros 
-	 * Assume a "stop" has already frozen the counters
-	 * Clear all the PMCs
-	 */
-	mtspr( PMC1, 0 );
-	mtspr( PMC2, 0 );
-	mtspr( PMC3, 0 );
-	mtspr( PMC4, 0 );
-	mtspr( PMC5, 0 );
-	mtspr( PMC6, 0 );
-	mtspr( PMC7, 0 );
-	mtspr( PMC8, 0 );
-
-}
-
-static inline void proc_pmc_cpi(void)
-{
-	/* Configure the PMC registers to count cycles and instructions */
-	/* so we can compute cpi */
-	/*
-	 * MMCRA[30]    = 1     Don't count in wait state (CTRL[31]=0)
-	 * MMCR0[6]     = 1     Freeze counters when any overflow
-	 * MMCR0[19:25] = 0x01  PMC1 counts Thread Active Run Cycles
-	 * MMCR0[26:31] = 0x05	PMC2 counts Thread Active Cycles
-	 * MMCR1[0:4]   = 0x07	PMC3 counts Instructions Dispatched
-	 * MMCR1[5:9]   = 0x03	PMC4 counts Instructions Completed
-	 * MMCR1[10:14] = 0x06	PMC5 counts Machine Cycles
-	 *
-	 */
-
-	proc_pmc_control_mode = PMC_CONTROL_CPI;
-	
-	/* Indicate to hypervisor that we are using the PMCs */
-	get_paca()->xLpPacaPtr->xPMCRegsInUse = 1;
-
-	/* Freeze all counters */
-	mtspr( MMCR0, 0x80000000 );
-	mtspr( MMCR1, 0x00000000 );
-	
-	/* Clear all the PMCs */
-	mtspr( PMC1, 0 );
-	mtspr( PMC2, 0 );
-	mtspr( PMC3, 0 );
-	mtspr( PMC4, 0 );
-	mtspr( PMC5, 0 );
-	mtspr( PMC6, 0 );
-	mtspr( PMC7, 0 );
-	mtspr( PMC8, 0 );
-
-	/* Freeze counters in Wait State (CTRL[31]=0) */
-	mtspr( MMCRA, 0x00000002 );
-
-	/* PMC3<-0x07, PMC4<-0x03, PMC5<-0x06 */
-	mtspr( MMCR1, 0x38cc0000 );
-
-	mb();
-	
-	/* PMC1<-0x01, PMC2<-0x05
-	 * Start all counters
-	 */
-	mtspr( MMCR0, 0x02000045 );
-	
-}
-
-static inline void proc_pmc_tlb(void)
-{
-	/* Configure the PMC registers to count tlb misses  */
-	/*
-	 * MMCR0[6]     = 1     Freeze counters when any overflow
-	 * MMCR0[19:25] = 0x55  Group count
-	 *   PMC1 counts  I misses
-	 *   PMC2 counts  I miss duration (latency)
-	 *   PMC3 counts  D misses
-	 *   PMC4 counts  D miss duration (latency)
-	 *   PMC5 counts  IERAT misses
-	 *   PMC6 counts  D references (including PMC7)
-	 *   PMC7 counts  miss PTEs searched
-	 *   PMC8 counts  miss >8 PTEs searched
-	 *   
-	 */
-
-	proc_pmc_control_mode = PMC_CONTROL_TLB;
-	
-	/* Indicate to hypervisor that we are using the PMCs */
-	get_paca()->xLpPacaPtr->xPMCRegsInUse = 1;
-
-	/* Freeze all counters */
-	mtspr( MMCR0, 0x80000000 );
-	mtspr( MMCR1, 0x00000000 );
-	
-	/* Clear all the PMCs */
-	mtspr( PMC1, 0 );
-	mtspr( PMC2, 0 );
-	mtspr( PMC3, 0 );
-	mtspr( PMC4, 0 );
-	mtspr( PMC5, 0 );
-	mtspr( PMC6, 0 );
-	mtspr( PMC7, 0 );
-	mtspr( PMC8, 0 );
-
-	mtspr( MMCRA, 0x00000000 );
-
-	mb();
-	
-	/* PMC1<-0x55
-	 * Start all counters
-	 */
-	mtspr( MMCR0, 0x02001540 );
-	
-}
-
-int proc_pmc_set_control( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	char stkbuf[10];
-	if (count > 9) count = 9;
-	if (copy_from_user (stkbuf, buffer, count)) {
-		return -EFAULT;
-	}
-	stkbuf[count] = 0;
-
-	if      ( ! strncmp( stkbuf, "stop", 4 ) )
-		proc_pmc_stop();
-	else if ( ! strncmp( stkbuf, "start", 5 ) )
-		proc_pmc_start();
-	else if ( ! strncmp( stkbuf, "reset", 5 ) )
-		proc_pmc_reset();
-	else if ( ! strncmp( stkbuf, "cpi", 3 ) )
-		proc_pmc_cpi();
-	else if ( ! strncmp( stkbuf, "tlb", 3 ) )
-		proc_pmc_tlb();
-	
-	/* IMPLEMENT ME */
-	return count;
-}
-
-int proc_pmc_set_mmcr0( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	v = v & ~0x04000000;	/* Don't allow interrupts for now */
-	if ( v & ~0x80000000 ) 	/* Inform hypervisor we are using PMCs */
-		get_paca()->xLpPacaPtr->xPMCRegsInUse = 1;
-	else
-		get_paca()->xLpPacaPtr->xPMCRegsInUse = 0;
-	mtspr( MMCR0, v );
-	
-	return count;	
-}
-
-int proc_pmc_set_mmcr1( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( MMCR1, v );
-
-	return count;
-}
-
-int proc_pmc_set_mmcra( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	v = v & ~0x00008000;	/* Don't allow interrupts for now */
-	mtspr( MMCRA, v );
-
-	return count;
-}
-
-
-int proc_pmc_set_pmc1( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC1, v );
-
-	return count;
-}
-
-int proc_pmc_set_pmc2( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC2, v );
-
-	return count;
-}
-
-int proc_pmc_set_pmc3( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC3, v );
-
-	return count;
-}
-
-int proc_pmc_set_pmc4( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC4, v );
-
-	return count;
-}
-
-int proc_pmc_set_pmc5( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC5, v );
-
-	return count;
-}
-
-int proc_pmc_set_pmc6( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC6, v );
-
-	return count;
-}
-
-int proc_pmc_set_pmc7( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC7, v );
-
-	return count;
-}
-
-int proc_pmc_set_pmc8( struct file *file, const char *buffer, unsigned long count, void *data )
-{
-	unsigned long v;
-	v = proc_pmc_conv_int( buffer, count );
-	mtspr( PMC8, v );
-
-	return count;
-}
-

arch/ppc64/kernel/proc_ppc64.c

@@ -18,15 +18,6 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-
-/*
- * Change Activity:
- * 2001       : mikec    : Created
- * 2001/06/05 : engebret : Software event count support.
- * 2003/02/13 : bergner  : Move PMC code to pmc.c
- * End Change Activity 
- */
-
 #include <linux/config.h>
 #include <linux/init.h>
 #include <linux/mm.h>
@@ -34,7 +25,6 @@
 #include <linux/slab.h>
 #include <linux/kernel.h>
 
-#include <asm/proc_fs.h>
 #include <asm/naca.h>
 #include <asm/paca.h>
 #include <asm/systemcfg.h>
@@ -42,10 +32,6 @@
 #include <asm/uaccess.h>
 #include <asm/prom.h>
 
-struct proc_ppc64_t proc_ppc64;
-
-void proc_ppc64_create_paca(int num);
-
 static loff_t  page_map_seek( struct file *file, loff_t off, int whence);
 static ssize_t page_map_read( struct file *file, char *buf, size_t nbytes, loff_t *ppos);
 static int     page_map_mmap( struct file *file, struct vm_area_struct *vma );
@@ -59,7 +45,7 @@ static struct file_operations page_map_fops = {
 #ifdef CONFIG_PPC_PSERIES
 /* routines for /proc/ppc64/ofdt */
 static ssize_t ofdt_write(struct file *, const char __user *, size_t, loff_t *);
-static void proc_ppc64_create_ofdt(struct proc_dir_entry *);
+static void proc_ppc64_create_ofdt(void);
 static int do_remove_node(char *);
 static int do_add_node(char *, size_t);
 static void release_prop_list(const struct property *);
@@ -70,77 +56,19 @@ static struct file_operations ofdt_fops = {
 };
 #endif
 
-int __init proc_ppc64_init(void)
-{
-
-
-	if (proc_ppc64.root == NULL) {
-		printk(KERN_INFO "proc_ppc64: Creating /proc/ppc64/\n");
-		proc_ppc64.root = proc_mkdir("ppc64", 0);
-		if (!proc_ppc64.root)
-			return 0;
-	} else {
-		return 0;
-	}
-
-	proc_ppc64.naca = create_proc_entry("naca", S_IRUSR, proc_ppc64.root);
-	if ( proc_ppc64.naca ) {
-		proc_ppc64.naca->nlink = 1;
-		proc_ppc64.naca->data = naca;
-		proc_ppc64.naca->size = 4096;
-		proc_ppc64.naca->proc_fops = &page_map_fops;
-	}
-	
-	proc_ppc64.systemcfg = create_proc_entry("systemcfg", S_IFREG|S_IRUGO, proc_ppc64.root);
-	if ( proc_ppc64.systemcfg ) {
-		proc_ppc64.systemcfg->nlink = 1;
-		proc_ppc64.systemcfg->data = systemcfg;
-		proc_ppc64.systemcfg->size = 4096;
-		proc_ppc64.systemcfg->proc_fops = &page_map_fops;
-	}
-
-	/* /proc/ppc64/paca/XX -- raw paca contents.  Only readable to root */
-	proc_ppc64.paca = proc_mkdir("paca", proc_ppc64.root);
-	if (proc_ppc64.paca) {
-		unsigned long i;
-
-		for (i = 0; i < NR_CPUS; i++) {
-			if (!cpu_online(i))
-				continue;
-			proc_ppc64_create_paca(i);
-		}
-	}
-
-#ifdef CONFIG_PPC_PSERIES
-	/* Placeholder for rtas interfaces. */
-	if (proc_ppc64.rtas == NULL)
-		proc_ppc64.rtas = proc_mkdir("rtas", proc_ppc64.root);
-
-	if (proc_ppc64.rtas)
-		proc_symlink("rtas", 0, "ppc64/rtas");
-
-	proc_ppc64_create_ofdt(proc_ppc64.root);
-#endif
-
-	return 0;
-}
-
-
 /*
- * NOTE: since paca data is always in flux the values will never be a consistant set.
- * In theory it could be made consistent if we made the corresponding cpu
- * copy the page for us (via an IPI).  Probably not worth it.
- *
+ * NOTE: since paca data is always in flux the values will never be a
+ * consistant set.
  */
-void proc_ppc64_create_paca(int num)
+static void __init proc_create_paca(struct proc_dir_entry *dir, int num)
 {
 	struct proc_dir_entry *ent;
 	struct paca_struct *lpaca = paca + num;
 	char buf[16];
 
 	sprintf(buf, "%02x", num);
-	ent = create_proc_entry(buf, S_IRUSR, proc_ppc64.paca);
-	if ( ent ) {
+	ent = create_proc_entry(buf, S_IRUSR, dir);
+	if (ent) {
 		ent->nlink = 1;
 		ent->data = lpaca;
 		ent->size = 4096;
@@ -148,6 +76,67 @@ void proc_ppc64_create_paca(int num)
 	}
 }
 
+/*
+ * Create the ppc64 and ppc64/rtas directories early. This allows us to
+ * assume that they have been previously created in drivers.
+ */
+static int __init proc_ppc64_create(void)
+{
+	struct proc_dir_entry *root;
+
+	root = proc_mkdir("ppc64", 0);
+	if (!root)
+		return 1;
+
+	if (!(systemcfg->platform & PLATFORM_PSERIES))
+		return 0;
+
+	if (!proc_mkdir("rtas", root))
+		return 1;
+
+	if (!proc_symlink("rtas", 0, "ppc64/rtas"))
+		return 1;
+
+	return 0;
+}
+core_initcall(proc_ppc64_create);
+
+static int __init proc_ppc64_init(void)
+{
+	unsigned long i;
+	struct proc_dir_entry *pde;
+
+	pde = create_proc_entry("ppc64/naca", S_IRUSR, NULL);
+	if (!pde)
+		return 1;
+	pde->nlink = 1;
+	pde->data = naca;
+	pde->size = 4096;
+	pde->proc_fops = &page_map_fops;
+
+	pde = create_proc_entry("ppc64/systemcfg", S_IFREG|S_IRUGO, NULL);
+	if (!pde)
+		return 1;
+	pde->nlink = 1;
+	pde->data = systemcfg;
+	pde->size = 4096;
+	pde->proc_fops = &page_map_fops;
+
+	/* /proc/ppc64/paca/XX -- raw paca contents.  Only readable to root */
+	pde = proc_mkdir("ppc64/paca", NULL);
+	if (!pde)
+		return 1;
+	for_each_cpu(i)
+		proc_create_paca(pde, i);
+
+#ifdef CONFIG_PPC_PSERIES
+	if ((systemcfg->platform & PLATFORM_PSERIES))
+		proc_ppc64_create_ofdt();
+#endif
+
+	return 0;
+}
+__initcall(proc_ppc64_init);
 
 static loff_t page_map_seek( struct file *file, loff_t off, int whence)
 {
@@ -204,11 +193,11 @@ static int page_map_mmap( struct file *file, struct vm_area_struct *vma )
 
 #ifdef CONFIG_PPC_PSERIES
 /* create /proc/ppc64/ofdt write-only by root */
-static void proc_ppc64_create_ofdt(struct proc_dir_entry *parent)
+static void proc_ppc64_create_ofdt(void)
 {
 	struct proc_dir_entry *ent;
 
-	ent = create_proc_entry("ofdt", S_IWUSR, parent);
+	ent = create_proc_entry("ppc64/ofdt", S_IWUSR, NULL);
 	if (ent) {
 		ent->nlink = 1;
 		ent->data = NULL;
@@ -423,5 +412,3 @@ static void release_prop_list(const struct property *prop)
 
 }
 #endif	/* defined(CONFIG_PPC_PSERIES) */
-
-fs_initcall(proc_ppc64_init);

arch/ppc64/kernel/ras.c

@@ -36,7 +36,6 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
-#include <linux/proc_fs.h>
 #include <linux/random.h>
 #include <linux/sysrq.h>
 

arch/ppc64/kernel/rtas-proc.c

@@ -28,7 +28,6 @@
 #include <asm/io.h>
 #include <asm/prom.h>
 #include <asm/rtas.h>
-#include <asm/proc_fs.h>
 #include <asm/machdep.h> /* for ppc_md */
 #include <asm/time.h>
 
@@ -117,8 +116,6 @@
 
 
 /* Globals */
-extern struct proc_dir_entry *proc_rtas;
-
 static struct rtas_sensors sensors;
 static struct device_node *rtas_node = NULL;
 static unsigned long power_on_time = 0; /* Save the time the user set */
@@ -201,51 +198,50 @@ int get_location_code(struct individual_sensor s, char * buf);
 int check_location_string (char *c, char * buf);
 int check_location (char *c, int idx, char * buf);
 
-/* ****************************************************************** */
-/* MAIN                                                               */
-/* ****************************************************************** */
-void proc_rtas_init(void)
+static int __init proc_rtas_init(void)
 {
 	struct proc_dir_entry *entry;
 
-	rtas_node = of_find_node_by_name(NULL, "rtas");
-	if ((rtas_node == NULL) || (systemcfg->platform == PLATFORM_ISERIES_LPAR)) {
-		return;
-	}
-	
-	if (proc_ppc64.rtas == NULL) {
-		proc_ppc64_init();
-	}
-
-	if (proc_ppc64.rtas == NULL) {
-		printk(KERN_ERR "Failed to create /proc/rtas in proc_rtas_init\n");
-		return;
-	}
+	if (!(systemcfg->platform & PLATFORM_PSERIES))
+		return 1;
 
-	/* /proc/rtas entries */
+	rtas_node = of_find_node_by_name(NULL, "rtas");
+	if (rtas_node == NULL)
+		return 1;
 
-	entry = create_proc_entry("progress", S_IRUGO|S_IWUSR, proc_ppc64.rtas);
-	if (entry) entry->proc_fops = &ppc_rtas_progress_operations;
+	entry = create_proc_entry("ppc64/rtas/progress", S_IRUGO|S_IWUSR, NULL);
+	if (entry)
+		entry->proc_fops = &ppc_rtas_progress_operations;
 
-	entry = create_proc_entry("clock", S_IRUGO|S_IWUSR, proc_ppc64.rtas); 
-	if (entry) entry->proc_fops = &ppc_rtas_clock_operations;
+	entry = create_proc_entry("ppc64/rtas/clock", S_IRUGO|S_IWUSR, NULL);
+	if (entry)
+		entry->proc_fops = &ppc_rtas_clock_operations;
 
-	entry = create_proc_entry("poweron", S_IWUSR|S_IRUGO, proc_ppc64.rtas); 
-	if (entry) entry->proc_fops = &ppc_rtas_poweron_operations;
+	entry = create_proc_entry("ppc64/rtas/poweron", S_IWUSR|S_IRUGO, NULL);
+	if (entry)
+		entry->proc_fops = &ppc_rtas_poweron_operations;
 
-	create_proc_read_entry("sensors", S_IRUGO, proc_ppc64.rtas, 
+	create_proc_read_entry("ppc64/rtas/sensors", S_IRUGO, NULL,
 			       ppc_rtas_sensor_read, NULL);
 
-	entry = create_proc_entry("frequency", S_IWUSR|S_IRUGO, proc_ppc64.rtas); 
-	if (entry) entry->proc_fops = &ppc_rtas_tone_freq_operations;
+	entry = create_proc_entry("ppc64/rtas/frequency", S_IWUSR|S_IRUGO,
+				  NULL);
+	if (entry)
+		entry->proc_fops = &ppc_rtas_tone_freq_operations;
 
-	entry = create_proc_entry("volume", S_IWUSR|S_IRUGO, proc_ppc64.rtas); 
-	if (entry) entry->proc_fops = &ppc_rtas_tone_volume_operations;
+	entry = create_proc_entry("ppc64/rtas/volume", S_IWUSR|S_IRUGO, NULL);
+	if (entry)
+		entry->proc_fops = &ppc_rtas_tone_volume_operations;
 
-	entry = create_proc_entry("rmo_buffer", S_IRUSR, proc_ppc64.rtas);
-	if (entry) entry->proc_fops = &ppc_rtas_rmo_buf_ops;
+	entry = create_proc_entry("ppc64/rtas/rmo_buffer", S_IRUSR, NULL);
+	if (entry)
+		entry->proc_fops = &ppc_rtas_rmo_buf_ops;
+
+	return 0;
 }
 
+__initcall(proc_rtas_init);
+
 /* ****************************************************************** */
 /* POWER-ON-TIME                                                      */
 /* ****************************************************************** */

arch/ppc64/kernel/rtas.c

@@ -19,7 +19,6 @@
 #include <linux/init.h>
 
 #include <asm/prom.h>
-#include <asm/proc_fs.h>
 #include <asm/rtas.h>
 #include <asm/semaphore.h>
 #include <asm/machdep.h>

arch/ppc64/kernel/rtas_flash.c

@@ -15,7 +15,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
-#include <asm/proc_fs.h>
+#include <linux/proc_fs.h>
 #include <asm/delay.h>
 #include <asm/uaccess.h>
 #include <asm/rtas.h>
@@ -106,10 +106,10 @@ struct rtas_validate_flash_t
 };
 
 static spinlock_t flash_file_open_lock = SPIN_LOCK_UNLOCKED;
-static struct proc_dir_entry *firmware_flash_pde = NULL;
-static struct proc_dir_entry *firmware_update_pde = NULL;
-static struct proc_dir_entry *validate_pde = NULL;
-static struct proc_dir_entry *manage_pde = NULL;
+static struct proc_dir_entry *firmware_flash_pde;
+static struct proc_dir_entry *firmware_update_pde;
+static struct proc_dir_entry *validate_pde;
+static struct proc_dir_entry *manage_pde;
 
 /* Do simple sanity checks on the flash image. */
 static int flash_list_valid(struct flash_block_list *flist)
@@ -567,16 +567,16 @@ static int validate_flash_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static inline void remove_flash_pde(struct proc_dir_entry *dp)
+static void remove_flash_pde(struct proc_dir_entry *dp)
 {
 	if (dp) {
 		if (dp->data != NULL)
 			kfree(dp->data);
-		remove_proc_entry(dp->name, proc_ppc64.rtas);
+		remove_proc_entry(dp->name, NULL);
 	}
 }
 
-static inline int initialize_flash_pde_data(const char *rtas_call_name, 
+static int initialize_flash_pde_data(const char *rtas_call_name,
 				     size_t buf_size,
 				     struct proc_dir_entry *dp)
 {
@@ -591,7 +591,8 @@ static inline int initialize_flash_pde_data(const char *rtas_call_name,
 
 	memset(dp->data, 0, buf_size);
 
-	/* This code assumes that the status int is the first member of the
+	/*
+	 * This code assumes that the status int is the first member of the
 	 * struct 
 	 */
 	status = (int *) dp->data;
@@ -604,12 +605,12 @@ static inline int initialize_flash_pde_data(const char *rtas_call_name,
 	return 0;
 }
 
-static inline struct proc_dir_entry * create_flash_pde(const char *filename, 
+static struct proc_dir_entry *create_flash_pde(const char *filename,
 					       struct file_operations *fops)
 {
 	struct proc_dir_entry *ent = NULL;
 
-	ent = create_proc_entry(filename, S_IRUSR | S_IWUSR, proc_ppc64.rtas);
+	ent = create_proc_entry(filename, S_IRUSR | S_IWUSR, NULL);
 	if (ent != NULL) {
 		ent->nlink = 1;
 		ent->proc_fops = fops;
@@ -644,50 +645,79 @@ int __init rtas_flash_init(void)
 {
 	int rc;
 
-	if (!proc_ppc64.rtas) {
-		printk(KERN_WARNING "rtas proc dir does not already exist");
-		return -ENOENT;
+	if (rtas_token("ibm,update-flash-64-and-reboot") ==
+		       RTAS_UNKNOWN_SERVICE) {
+		printk(KERN_ERR "rtas_flash: no firmware flash support\n");
+		return 1;
 	}
 
-	firmware_flash_pde = create_flash_pde(FIRMWARE_FLASH_NAME, 
+	firmware_flash_pde = create_flash_pde("ppc64/rtas/"
+					      FIRMWARE_FLASH_NAME,
 					      &rtas_flash_operations);
+	if (firmware_flash_pde == NULL) {
+		rc = -ENOMEM;
+		goto cleanup;
+	}
+
 	rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
 			 	       sizeof(struct rtas_update_flash_t), 
 				       firmware_flash_pde);
 	if (rc != 0)
-		return rc;
+		goto cleanup;
 
-	firmware_update_pde = create_flash_pde(FIRMWARE_UPDATE_NAME, 
+	firmware_update_pde = create_flash_pde("ppc64/rtas/"
+					       FIRMWARE_UPDATE_NAME,
 					       &rtas_flash_operations);
+	if (firmware_update_pde == NULL) {
+		rc = -ENOMEM;
+		goto cleanup;
+	}
+
 	rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
 			 	       sizeof(struct rtas_update_flash_t), 
 				       firmware_update_pde);
 	if (rc != 0)
-		return rc;
+		goto cleanup;
 
-	validate_pde = create_flash_pde(VALIDATE_FLASH_NAME, 
+	validate_pde = create_flash_pde("ppc64/rtas/" VALIDATE_FLASH_NAME,
 			      		&validate_flash_operations);
+	if (validate_pde == NULL) {
+		rc = -ENOMEM;
+		goto cleanup;
+	}
+
 	rc = initialize_flash_pde_data("ibm,validate-flash-image",
 		                       sizeof(struct rtas_validate_flash_t), 
 				       validate_pde);
 	if (rc != 0)
-		return rc;
+		goto cleanup;
 
-	manage_pde = create_flash_pde(MANAGE_FLASH_NAME, 
+	manage_pde = create_flash_pde("ppc64/rtas" MANAGE_FLASH_NAME,
 				      &manage_flash_operations);
+	if (manage_pde == NULL) {
+		rc = -ENOMEM;
+		goto cleanup;
+	}
+
 	rc = initialize_flash_pde_data("ibm,manage-flash-image",
 			               sizeof(struct rtas_manage_flash_t),
 				       manage_pde);
 	if (rc != 0)
-		return rc;
+		goto cleanup;
 
 	return 0;
+
+cleanup:
+	remove_flash_pde(firmware_flash_pde);
+	remove_flash_pde(firmware_update_pde);
+	remove_flash_pde(validate_pde);
+	remove_flash_pde(manage_pde);
+
+	return rc;
 }
 
 void __exit rtas_flash_cleanup(void)
 {
-	if (!proc_ppc64.rtas)
-		return;
 	remove_flash_pde(firmware_flash_pde);
 	remove_flash_pde(firmware_update_pde);
 	remove_flash_pde(validate_pde);

arch/ppc64/kernel/rtasd.c

@@ -26,7 +26,6 @@
 #include <asm/prom.h>
 #include <asm/nvram.h>
 #include <asm/atomic.h>
-#include <asm/proc_fs.h>
 
 #if 0
 #define DEBUG(A...)	printk(KERN_ERR A)
@@ -47,7 +46,6 @@ static unsigned int rtas_event_scan_rate;
 static unsigned int rtas_error_log_max;
 static unsigned int rtas_error_log_buffer_max;
 
-extern spinlock_t proc_ppc64_lock;
 extern volatile int no_more_logging;
 
 volatile int error_log_cnt = 0;
@@ -445,20 +443,18 @@ static int __init rtas_init(void)
 {
 	struct proc_dir_entry *entry;
 
-	if (proc_ppc64.rtas == NULL) {
-		proc_ppc64_init();
-	}
-
-	if (proc_ppc64.rtas == NULL) {
-		printk(KERN_ERR "rtas_init: /proc/ppc64/rtas does not exist.");
-		return -EIO;
+	/* No RTAS, only warn if we are on a pSeries box  */
+	if (rtas_token("event-scan") == RTAS_UNKNOWN_SERVICE) {
+		if (systemcfg->platform & PLATFORM_PSERIES);
+			printk(KERN_ERR "rtasd: no RTAS on system\n");
+		return 1;
 	}
 
-	entry = create_proc_entry("error_log", S_IRUSR, proc_ppc64.rtas);
+	entry = create_proc_entry("ppc64/error_log", S_IRUSR, NULL);
 	if (entry)
 		entry->proc_fops = &proc_rtas_log_operations;
 	else
-		printk(KERN_ERR "Failed to create rtas/error_log proc entry\n");
+		printk(KERN_ERR "Failed to create error_log proc entry\n");
 
 	if (kernel_thread(rtasd, 0, CLONE_FS) < 0)
 		printk(KERN_ERR "Failed to start RTAS daemon\n");

arch/ppc64/kernel/scanlog.c

@@ -28,7 +28,6 @@
 #include <asm/uaccess.h>
 #include <asm/rtas.h>
 #include <asm/prom.h>
-#include <asm/proc_fs.h>
 
 #define MODULE_VERS "1.0"
 #define MODULE_NAME "scanlog"
@@ -212,16 +211,7 @@ int __init scanlog_init(void)
 		return -EIO;
 	}
 
-	if (proc_ppc64.rtas == NULL) {
-		proc_ppc64_init();
-	}
-
-	if (proc_ppc64.rtas == NULL) {
-		printk(KERN_ERR "Failed to create /proc/rtas in scanlog_init\n");
-		return -EIO;
-	}
-
-        ent = create_proc_entry("scan-log-dump",  S_IRUSR, proc_ppc64.rtas);
+        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 */

arch/ppc64/kernel/viopath.c

@@ -28,7 +28,6 @@
  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  *
  */
-#include <asm/uaccess.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -37,9 +36,10 @@
 #include <linux/proc_fs.h>
 #include <linux/dma-mapping.h>
 #include <linux/wait.h>
+#include <linux/seq_file.h>
 
-#include <asm/hardirq.h>	/* for is_atomic */
-
+#include <asm/hardirq.h>
+#include <asm/uaccess.h>
 #include <asm/iSeries/LparData.h>
 #include <asm/iSeries/HvLpEvent.h>
 #include <asm/iSeries/HvLpConfig.h>
@@ -184,21 +184,21 @@ static unsigned char e2a(unsigned char x)
 	return ' ';
 }
 
-/* Handle reads from the proc file system
- */
-static int proc_read(char *buf, char **start, off_t offset,
-		     int blen, int *eof, void *data)
+static int proc_viopath_show(struct seq_file *m, void *v)
 {
+	char *buf;
+	dma_addr_t handle;
 	HvLpEvent_Rc hvrc;
 	DECLARE_MUTEX_LOCKED(Semaphore);
-	dma_addr_t dmaa =
-	    dma_map_single(iSeries_vio_dev, buf, PAGE_SIZE, DMA_FROM_DEVICE);
-	int len = PAGE_SIZE;
 
-	if (len > blen)
-		len = blen;
+	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	if (!buf)
+		return 0;
+	memset(buf, 0, PAGE_SIZE);
+
+	handle = dma_map_single(iSeries_vio_dev, buf, PAGE_SIZE,
+				DMA_FROM_DEVICE);
 
-	memset(buf, 0x00, len);
 	hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
 			HvLpEvent_Type_VirtualIo,
 			viomajorsubtype_config | vioconfigget,
@@ -206,50 +206,54 @@ static int proc_read(char *buf, char **start, off_t offset,
 			viopath_sourceinst(viopath_hostLp),
 			viopath_targetinst(viopath_hostLp),
 			(u64)(unsigned long)&Semaphore, VIOVERSION << 16,
-			((u64)dmaa) << 32, len, 0, 0);
+			((u64)handle) << 32, PAGE_SIZE, 0, 0);
+
 	if (hvrc != HvLpEvent_Rc_Good)
-		printk("viopath hv error on op %d\n", (int) hvrc);
+		printk("viopath hv error on op %d\n", (int)hvrc);
 
 	down(&Semaphore);
 
-	dma_unmap_single(iSeries_vio_dev, dmaa, PAGE_SIZE, DMA_FROM_DEVICE);
-
-	sprintf(buf + strlen(buf), "SRLNBR=");
-	buf[strlen(buf)] = e2a(xItExtVpdPanel.mfgID[2]);
-	buf[strlen(buf)] = e2a(xItExtVpdPanel.mfgID[3]);
-	buf[strlen(buf)] = e2a(xItExtVpdPanel.systemSerial[1]);
-	buf[strlen(buf)] = e2a(xItExtVpdPanel.systemSerial[2]);
-	buf[strlen(buf)] = e2a(xItExtVpdPanel.systemSerial[3]);
-	buf[strlen(buf)] = e2a(xItExtVpdPanel.systemSerial[4]);
-	buf[strlen(buf)] = e2a(xItExtVpdPanel.systemSerial[5]);
-	buf[strlen(buf)] = '\n';
-	*eof = 1;
-	return strlen(buf);
+	dma_unmap_single(iSeries_vio_dev, handle, PAGE_SIZE, DMA_FROM_DEVICE);
+	kfree(buf);
+
+	buf[PAGE_SIZE] = '\0';
+	seq_printf(m, "%s", buf);
+
+	seq_printf(m, "SRLNBR=%c%c%c%c%c%c%c\n",
+		   e2a(xItExtVpdPanel.mfgID[2]),
+		   e2a(xItExtVpdPanel.mfgID[3]),
+		   e2a(xItExtVpdPanel.systemSerial[1]),
+		   e2a(xItExtVpdPanel.systemSerial[2]),
+		   e2a(xItExtVpdPanel.systemSerial[3]),
+		   e2a(xItExtVpdPanel.systemSerial[4]),
+		   e2a(xItExtVpdPanel.systemSerial[5]));
+
+	return 0;
 }
 
-/* Handle writes to our proc file system
- */
-static int proc_write(struct file *file, const char *buffer,
-		      unsigned long count, void *data)
+static int proc_viopath_open(struct inode *inode, struct file *file)
 {
-	/* Doesn't do anything today!!!
-	 */
-	return count;
+	return single_open(file, proc_viopath_show, NULL);
 }
 
-/* setup our proc file system entries
- */
-static void vio_proc_init(struct proc_dir_entry *iSeries_proc)
+static struct file_operations proc_viopath_operations = {
+	.open		= proc_viopath_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static int __init vio_proc_init(void)
 {
-	struct proc_dir_entry *ent;
-	ent = create_proc_entry("config", S_IFREG | S_IRUSR, iSeries_proc);
-	if (!ent)
-		return;
-	ent->nlink = 1;
-	ent->data = NULL;
-	ent->read_proc = proc_read;
-	ent->write_proc = proc_write;
+	struct proc_dir_entry *e;
+
+	e = create_proc_entry("iSeries/config", 0, NULL);
+	if (e)
+		e->proc_fops = &proc_viopath_operations;
+
+        return 0;
 }
+__initcall(vio_proc_init);
 
 /* See if a given LP is active.  Allow for invalid lps to be passed in
  * and just return invalid
@@ -433,13 +437,8 @@ void vio_set_hostlp(void)
 	viopath_ourLp = HvLpConfig_getLpIndex();
 	viopath_hostLp = HvCallCfg_getHostingLpIndex(viopath_ourLp);
 
-	/* If we have a valid hosting LP, create a proc file system entry
-	 * for config information
-	 */
-	if (viopath_hostLp != HvLpIndexInvalid) {
-		iSeries_proc_callback(&vio_proc_init);
+	if (viopath_hostLp != HvLpIndexInvalid)
 		vio_setHandler(viomajorsubtype_config, handleConfig);
-	}
 }
 EXPORT_SYMBOL(vio_set_hostlp);
 

arch/ppc64/mm/hash_utils.c

@@ -39,7 +39,6 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/naca.h>
-#include <asm/pmc.h>
 #include <asm/machdep.h>
 #include <asm/lmb.h>
 #include <asm/abs_addr.h>

arch/ppc64/mm/init.c

@@ -36,7 +36,6 @@
 #include <linux/delay.h>
 #include <linux/bootmem.h>
 #include <linux/highmem.h>
-#include <linux/proc_fs.h>
 
 #include <asm/pgalloc.h>
 #include <asm/page.h>

fs/proc/root.c

@@ -73,9 +73,6 @@ void __init proc_root_init(void)
 	proc_tty_init();
 #ifdef CONFIG_PROC_DEVICETREE
 	proc_device_tree_init();
-#endif
-#ifdef CONFIG_PPC_RTAS
-	proc_rtas_init();
 #endif
 	proc_bus = proc_mkdir("bus", 0);
 }

include/asm-ppc64/iSeries/iSeries_proc.h

@@ -19,12 +19,6 @@
 #ifndef _ISERIES_PROC_H
 #define _ISERIES_PROC_H
 
-#include <linux/proc_fs.h>
-
 extern void iSeries_proc_early_init(void);
 
-typedef void (*iSeriesProcFunction)(struct proc_dir_entry *iSeries_proc);
-
-extern void iSeries_proc_callback(iSeriesProcFunction initFunction);
-
 #endif /* _iSeries_PROC_H */

include/asm-ppc64/iSeries/mf.h

@@ -67,6 +67,4 @@ extern int mf_getRtcTime(unsigned long *time);
 extern int mf_getRtc( struct rtc_time * tm );
 extern int mf_setRtc( struct rtc_time * tm );
 
-extern void mf_proc_init(struct proc_dir_entry *iSeries_proc);
-
 #endif /* MF_H_INCLUDED */

include/asm-ppc64/pmc.h

-/* 
- * pmc.h
- * Copyright (C) 2001  Dave Engebretsen & Mike Corrigan IBM Corporation.
- *
- * The PPC64 PMC subsystem encompases both the hardware PMC registers and 
- * a set of software event counters.  An interface is provided via the
- * proc filesystem which can be used to access this subsystem.
- *
- * 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.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-/* Start Change Log
- * 2001/06/05 : engebret : Created.
- * End Change Log 
- */
-
-#ifndef _PPC64_TYPES_H
-#include        <asm/types.h>
-#endif
-
-#ifndef _PMC_H
-#define _PMC_H
-
-#define STAB_ENTRY_MAX 64
-
-struct _pmc_hw
-{
-	u64 mmcr0; 
-	u64 mmcr1; 
-	u64 mmcra; 
-
-	u64 pmc1; 
-	u64 pmc2; 
-	u64 pmc3; 
-	u64 pmc4; 
-	u64 pmc5; 
-	u64 pmc6; 
-	u64 pmc7; 
-	u64 pmc8; 
-};
-
-struct _pmc_sw
-{
-	u64 stab_faults;           /* Count of faults on the stab      */
-	u64 stab_capacity_castouts;/* Count of castouts from the stab  */
-	u64 stab_invalidations;	   /* Count of invalidations from the  */
-                                   /*   stab, not including castouts   */
-	u64 stab_entry_use[STAB_ENTRY_MAX]; 
-
-	u64 htab_primary_overflows;
-	u64 htab_capacity_castouts;
-	u64 htab_read_to_write_fault;
-};
-
-#define PMC_HW_TEXT_ENTRY_COUNT (sizeof(struct _pmc_hw) / sizeof(u64))
-#define PMC_SW_TEXT_ENTRY_COUNT (sizeof(struct _pmc_sw) / sizeof(u64))
-#define PMC_TEXT_ENTRY_SIZE  64
-
-struct _pmc_sw_text {
-	char buffer[PMC_SW_TEXT_ENTRY_COUNT * PMC_TEXT_ENTRY_SIZE];
-};
-
-struct _pmc_hw_text {
-	char buffer[PMC_HW_TEXT_ENTRY_COUNT * PMC_TEXT_ENTRY_SIZE];
-};
-
-extern struct _pmc_sw pmc_sw_system;
-extern struct _pmc_sw pmc_sw_cpu[];
-
-extern struct _pmc_sw_text pmc_sw_text;
-extern struct _pmc_hw_text pmc_hw_text;
-extern char *ppc64_pmc_stab(int file);
-extern char *ppc64_pmc_htab(int file);
-extern char *ppc64_pmc_hw(int file);
-
-#if 1
-#define PMC_SW_PROCESSOR(F)      pmc_sw_cpu[smp_processor_id()].F++
-#define PMC_SW_PROCESSOR_A(F, E) (pmc_sw_cpu[smp_processor_id()].F[(E)])++
-#define PMC_SW_SYSTEM(F)         pmc_sw_system.F++
-#else
-#define PMC_SW_PROCESSOR(F)   do {;} while (0)
-#define PMC_SW_PROCESSOR_A(F) do {;} while (0)
-#define PMC_SW_SYSTEM(F)      do {;} while (0)
-#endif
-
-#define MMCR0 795
-#define MMCR1 798
-#define MMCRA 786
-#define PMC1  787
-#define PMC2  788
-#define PMC3  789
-#define PMC4  790
-#define PMC5  791
-#define PMC6  792
-#define PMC7  793
-#define PMC8  794
-
-#define PMC_CONTROL_CPI 1
-#define PMC_CONTROL_TLB 2
-
-#endif /* _PMC_H */

include/asm-ppc64/proc_fs.h

-#ifndef _PPC64_PROC_FS_H
-#define _PPC64_PROC_FS_H
-/*
- * proc_fs.h
- * Copyright (C) 2001  Mike Corrigan  IBM Corporation
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-/* Change Activity: */
-/* tgall -- merge of iSeries/iSeries_proc.h and proc_pmc.h */
-/* End Change Activity */
-
-#include <linux/proc_fs.h>
-
-struct proc_ppc64_t {
-	struct proc_dir_entry *root;
-	struct proc_dir_entry *naca;
-	struct proc_dir_entry *paca;
-	struct proc_dir_entry *systemcfg;
-	struct proc_dir_entry *rtas;
-};
-
-extern struct proc_ppc64_t proc_ppc64;
-extern int proc_ppc64_init(void);
-
-#endif /* _PPC64_PROC_FS_H */

include/asm-ppc64/proc_pmc.h

-/*
- * pmc_proc.h
- * Copyright (C) 2001  Mike Corrigan  IBM Corporation
- * 
- * 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.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-
-/* Change Activity: */
-/* End Change Activity */
-
-#ifndef _PMC_PROC_H
-#define _PMC_PROC_H
-
-#include <linux/proc_fs.h>
-
-void pmc_proc_init(struct proc_dir_entry *iSeries_proc);
-void proc_ppc64_init(void);
-
-#endif /* _PMC_PROC_H */
-