x86: moved microcode.c to microcode_intel.c

Combine both generic and arch-specific parts of microcode into a
single module (arch-specific parts are config-dependent).

Also while we are at it, move arch-specific parts from microcode.h
into their respective arch-specific .c files.

Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Cc: "Peter Oruba" <peter.oruba@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 505 deletions

diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c
deleted file mode 100644
index 0c2634f4fd7c..000000000000
--- a/arch/x86/kernel/microcode.c
+++ /dev/null
@@ -1,505 +0,0 @@
-/*
- *	Intel CPU Microcode Update Driver for Linux
- *
- *	Copyright (C) 2000-2006 Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
- *		      2006	Shaohua Li <shaohua.li@intel.com>
- *
- *	This driver allows to upgrade microcode on Intel processors
- *	belonging to IA-32 family - PentiumPro, Pentium II,
- *	Pentium III, Xeon, Pentium 4, etc.
- *
- *	Reference: Section 8.11 of Volume 3a, IA-32 Intel? Architecture
- *	Software Developer's Manual
- *	Order Number 253668 or free download from:
- *
- *	http://developer.intel.com/design/pentium4/manuals/253668.htm
- *
- *	For more information, go to http://www.urbanmyth.org/microcode
- *
- *	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.
- *
- *	1.0	16 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Initial release.
- *	1.01	18 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Added read() support + cleanups.
- *	1.02	21 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Added 'device trimming' support. open(O_WRONLY) zeroes
- *		and frees the saved copy of applied microcode.
- *	1.03	29 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Made to use devfs (/dev/cpu/microcode) + cleanups.
- *	1.04	06 Jun 2000, Simon Trimmer <simon@veritas.com>
- *		Added misc device support (now uses both devfs and misc).
- *		Added MICROCODE_IOCFREE ioctl to clear memory.
- *	1.05	09 Jun 2000, Simon Trimmer <simon@veritas.com>
- *		Messages for error cases (non Intel & no suitable microcode).
- *	1.06	03 Aug 2000, Tigran Aivazian <tigran@veritas.com>
- *		Removed ->release(). Removed exclusive open and status bitmap.
- *		Added microcode_rwsem to serialize read()/write()/ioctl().
- *		Removed global kernel lock usage.
- *	1.07	07 Sep 2000, Tigran Aivazian <tigran@veritas.com>
- *		Write 0 to 0x8B msr and then cpuid before reading revision,
- *		so that it works even if there were no update done by the
- *		BIOS. Otherwise, reading from 0x8B gives junk (which happened
- *		to be 0 on my machine which is why it worked even when I
- *		disabled update by the BIOS)
- *		Thanks to Eric W. Biederman <ebiederman@lnxi.com> for the fix.
- *	1.08	11 Dec 2000, Richard Schaal <richard.schaal@intel.com> and
- *			     Tigran Aivazian <tigran@veritas.com>
- *		Intel Pentium 4 processor support and bugfixes.
- *	1.09	30 Oct 2001, Tigran Aivazian <tigran@veritas.com>
- *		Bugfix for HT (Hyper-Threading) enabled processors
- *		whereby processor resources are shared by all logical processors
- *		in a single CPU package.
- *	1.10	28 Feb 2002 Asit K Mallick <asit.k.mallick@intel.com> and
- *		Tigran Aivazian <tigran@veritas.com>,
- *		Serialize updates as required on HT processors due to
- *		speculative nature of implementation.
- *	1.11	22 Mar 2002 Tigran Aivazian <tigran@veritas.com>
- *		Fix the panic when writing zero-length microcode chunk.
- *	1.12	29 Sep 2003 Nitin Kamble <nitin.a.kamble@intel.com>,
- *		Jun Nakajima <jun.nakajima@intel.com>
- *		Support for the microcode updates in the new format.
- *	1.13	10 Oct 2003 Tigran Aivazian <tigran@veritas.com>
- *		Removed ->read() method and obsoleted MICROCODE_IOCFREE ioctl
- *		because we no longer hold a copy of applied microcode
- *		in kernel memory.
- *	1.14	25 Jun 2004 Tigran Aivazian <tigran@veritas.com>
- *		Fix sigmatch() macro to handle old CPUs with pf == 0.
- *		Thanks to Stuart Swales for pointing out this bug.
- */
-#include <linux/capability.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/smp_lock.h>
-#include <linux/cpumask.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/miscdevice.h>
-#include <linux/spinlock.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/mutex.h>
-#include <linux/cpu.h>
-#include <linux/firmware.h>
-#include <linux/platform_device.h>
-
-#include <asm/msr.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-#include <asm/microcode.h>
-
-MODULE_DESCRIPTION("Microcode Update Driver");
-MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
-MODULE_LICENSE("GPL");
-
-#define MICROCODE_VERSION 	"2.00"
-
-struct microcode_ops *microcode_ops;
-
-/* no concurrent ->write()s are allowed on /dev/cpu/microcode */
-static DEFINE_MUTEX(microcode_mutex);
-
-struct ucode_cpu_info ucode_cpu_info[NR_CPUS];
-EXPORT_SYMBOL_GPL(ucode_cpu_info);
-
-#ifdef CONFIG_MICROCODE_OLD_INTERFACE
-static int do_microcode_update(const void __user *buf, size_t size)
-{
-	cpumask_t old;
-	int error = 0;
-	int cpu;
-
-	old = current->cpus_allowed;
-
-	for_each_online_cpu(cpu) {
-		struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-		if (!uci->valid)
-			continue;
-
-		set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
-		error = microcode_ops->request_microcode_user(cpu, buf, size);
-		if (error < 0)
-			goto out;
-		if (!error)
-			microcode_ops->apply_microcode(cpu);
-	}
-out:
-	set_cpus_allowed_ptr(current, &old);
-	return error;
-}
-
-static int microcode_open(struct inode *unused1, struct file *unused2)
-{
-	cycle_kernel_lock();
-	return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
-}
-
-static ssize_t microcode_write(struct file *file, const char __user *buf,
-			       size_t len, loff_t *ppos)
-{
-	ssize_t ret;
-
-	if ((len >> PAGE_SHIFT) > num_physpages) {
-		printk(KERN_ERR "microcode: too much data (max %ld pages)\n",
-		       num_physpages);
-		return -EINVAL;
-	}
-
-	get_online_cpus();
-	mutex_lock(&microcode_mutex);
-
-	ret = do_microcode_update(buf, len);
-	if (!ret)
-		ret = (ssize_t)len;
-
-	mutex_unlock(&microcode_mutex);
-	put_online_cpus();
-
-	return ret;
-}
-
-static const struct file_operations microcode_fops = {
-	.owner		= THIS_MODULE,
-	.write		= microcode_write,
-	.open		= microcode_open,
-};
-
-static struct miscdevice microcode_dev = {
-	.minor		= MICROCODE_MINOR,
-	.name		= "microcode",
-	.fops		= &microcode_fops,
-};
-
-static int __init microcode_dev_init(void)
-{
-	int error;
-
-	error = misc_register(&microcode_dev);
-	if (error) {
-		printk(KERN_ERR
-			"microcode: can't misc_register on minor=%d\n",
-			MICROCODE_MINOR);
-		return error;
-	}
-
-	return 0;
-}
-
-static void microcode_dev_exit(void)
-{
-	misc_deregister(&microcode_dev);
-}
-
-MODULE_ALIAS_MISCDEV(MICROCODE_MINOR);
-#else
-#define microcode_dev_init() 0
-#define microcode_dev_exit() do { } while (0)
-#endif
-
-/* fake device for request_firmware */
-struct platform_device *microcode_pdev;
-
-static ssize_t reload_store(struct sys_device *dev,
-			    struct sysdev_attribute *attr,
-			    const char *buf, size_t sz)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
-	char *end;
-	unsigned long val = simple_strtoul(buf, &end, 0);
-	int err = 0;
-	int cpu = dev->id;
-
-	if (end == buf)
-		return -EINVAL;
-	if (val == 1) {
-		cpumask_t old = current->cpus_allowed;
-
-		get_online_cpus();
-		if (cpu_online(cpu)) {
-			set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
-			mutex_lock(&microcode_mutex);
-			if (uci->valid) {
-				err = microcode_ops->request_microcode_fw(cpu,
-						&microcode_pdev->dev);
-				if (!err)
-					microcode_ops->apply_microcode(cpu);
-			}
-			mutex_unlock(&microcode_mutex);
-			set_cpus_allowed_ptr(current, &old);
-		}
-		put_online_cpus();
-	}
-	if (err)
-		return err;
-	return sz;
-}
-
-static ssize_t version_show(struct sys_device *dev,
-			struct sysdev_attribute *attr, char *buf)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
-
-	return sprintf(buf, "0x%x\n", uci->cpu_sig.rev);
-}
-
-static ssize_t pf_show(struct sys_device *dev,
-			struct sysdev_attribute *attr, char *buf)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
-
-	return sprintf(buf, "0x%x\n", uci->cpu_sig.pf);
-}
-
-static SYSDEV_ATTR(reload, 0200, NULL, reload_store);
-static SYSDEV_ATTR(version, 0400, version_show, NULL);
-static SYSDEV_ATTR(processor_flags, 0400, pf_show, NULL);
-
-static struct attribute *mc_default_attrs[] = {
-	&attr_reload.attr,
-	&attr_version.attr,
-	&attr_processor_flags.attr,
-	NULL
-};
-
-static struct attribute_group mc_attr_group = {
-	.attrs = mc_default_attrs,
-	.name = "microcode",
-};
-
-static void microcode_fini_cpu(int cpu)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-	mutex_lock(&microcode_mutex);
-	microcode_ops->microcode_fini_cpu(cpu);
-	uci->valid = 0;
-	mutex_unlock(&microcode_mutex);
-}
-
-static void collect_cpu_info(int cpu)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-	memset(uci, 0, sizeof(*uci));
-	if (!microcode_ops->collect_cpu_info(cpu, &uci->cpu_sig))
-		uci->valid = 1;
-}
-
-static int microcode_resume_cpu(int cpu)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-	struct cpu_signature nsig;
-
-	pr_debug("microcode: CPU%d resumed\n", cpu);
-
-	if (!uci->mc.valid_mc)
-		return 1;
-
-	/*
-	 * Let's verify that the 'cached' ucode does belong
-	 * to this cpu (a bit of paranoia):
-	 */
-	if (microcode_ops->collect_cpu_info(cpu, &nsig)) {
-		microcode_fini_cpu(cpu);
-		return -1;
-	}
-
-	if (memcmp(&nsig, &uci->cpu_sig, sizeof(nsig))) {
-		microcode_fini_cpu(cpu);
-		/* Should we look for a new ucode here? */
-		return 1;
-	}
-
-	return 0;
-}
-
-void microcode_update_cpu(int cpu)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-	int err = 0;
-
-	/* We should bind the task to the CPU */
-	BUG_ON(raw_smp_processor_id() != cpu);
-
-	mutex_lock(&microcode_mutex);
-	/*
-	 * Check if the system resume is in progress (uci->valid != NULL),
-	 * otherwise just request a firmware:
-	 */
-	if (uci->valid) {
-		err = microcode_resume_cpu(cpu);
-	} else {	
-		collect_cpu_info(cpu);
-		if (uci->valid && system_state == SYSTEM_RUNNING)
-			err = microcode_ops->request_microcode_fw(cpu,
-					&microcode_pdev->dev);
-	}
-
-	if (!err)
-		microcode_ops->apply_microcode(cpu);
-
-	mutex_unlock(&microcode_mutex);
-}
-
-static void microcode_init_cpu(int cpu)
-{
-	cpumask_t old = current->cpus_allowed;
-
-	set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
-	microcode_update_cpu(cpu);
-	set_cpus_allowed_ptr(current, &old);
-}
-
-static int mc_sysdev_add(struct sys_device *sys_dev)
-{
-	int err, cpu = sys_dev->id;
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-	if (!cpu_online(cpu))
-		return 0;
-
-	pr_debug("microcode: CPU%d added\n", cpu);
-	memset(uci, 0, sizeof(*uci));
-
-	err = sysfs_create_group(&sys_dev->kobj, &mc_attr_group);
-	if (err)
-		return err;
-
-	microcode_init_cpu(cpu);
-	return 0;
-}
-
-static int mc_sysdev_remove(struct sys_device *sys_dev)
-{
-	int cpu = sys_dev->id;
-
-	if (!cpu_online(cpu))
-		return 0;
-
-	pr_debug("microcode: CPU%d removed\n", cpu);
-	microcode_fini_cpu(cpu);
-	sysfs_remove_group(&sys_dev->kobj, &mc_attr_group);
-	return 0;
-}
-
-static int mc_sysdev_resume(struct sys_device *dev)
-{
-	int cpu = dev->id;
-
-	if (!cpu_online(cpu))
-		return 0;
-
-	/* only CPU 0 will apply ucode here */
-	microcode_update_cpu(0);
-	return 0;
-}
-
-static struct sysdev_driver mc_sysdev_driver = {
-	.add = mc_sysdev_add,
-	.remove = mc_sysdev_remove,
-	.resume = mc_sysdev_resume,
-};
-
-static __cpuinit int
-mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
-{
-	unsigned int cpu = (unsigned long)hcpu;
-	struct sys_device *sys_dev;
-
-	sys_dev = get_cpu_sysdev(cpu);
-	switch (action) {
-	case CPU_ONLINE:
-	case CPU_ONLINE_FROZEN:
-		microcode_init_cpu(cpu);
-	case CPU_DOWN_FAILED:
-	case CPU_DOWN_FAILED_FROZEN:
-		pr_debug("microcode: CPU%d added\n", cpu);
-		if (sysfs_create_group(&sys_dev->kobj, &mc_attr_group))
-			printk(KERN_ERR "microcode: Failed to create the sysfs "
-				"group for CPU%d\n", cpu);
-		break;
-	case CPU_DOWN_PREPARE:
-	case CPU_DOWN_PREPARE_FROZEN:
-		/* Suspend is in progress, only remove the interface */
-		sysfs_remove_group(&sys_dev->kobj, &mc_attr_group);
-		pr_debug("microcode: CPU%d removed\n", cpu);
-		break;
-	case CPU_DEAD:
-	case CPU_UP_CANCELED_FROZEN:
-		/* The CPU refused to come up during a system resume */
-		microcode_fini_cpu(cpu);
-		break;
-	}
-	return NOTIFY_OK;
-}
-
-static struct notifier_block __refdata mc_cpu_notifier = {
-	.notifier_call = mc_cpu_callback,
-};
-
-int microcode_init(void *opaque, struct module *module)
-{
-	struct microcode_ops *ops = (struct microcode_ops *)opaque;
-	int error;
-
-	if (microcode_ops) {
-		printk(KERN_ERR "microcode: already loaded the other module\n");
-		return -EEXIST;
-	}
-
-	microcode_ops = ops;
-
-	error = microcode_dev_init();
-	if (error)
-		return error;
-	microcode_pdev = platform_device_register_simple("microcode", -1,
-							 NULL, 0);
-	if (IS_ERR(microcode_pdev)) {
-		microcode_dev_exit();
-		return PTR_ERR(microcode_pdev);
-	}
-
-	get_online_cpus();
-	error = sysdev_driver_register(&cpu_sysdev_class, &mc_sysdev_driver);
-	put_online_cpus();
-	if (error) {
-		microcode_dev_exit();
-		platform_device_unregister(microcode_pdev);
-		return error;
-	}
-
-	register_hotcpu_notifier(&mc_cpu_notifier);
-
-	printk(KERN_INFO
-	       "Microcode Update Driver: v" MICROCODE_VERSION
-	       " <tigran@aivazian.fsnet.co.uk>"
-	       " <peter.oruba@amd.com>\n");
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(microcode_init);
-
-void __exit microcode_exit(void)
-{
-	microcode_dev_exit();
-
-	unregister_hotcpu_notifier(&mc_cpu_notifier);
-
-	get_online_cpus();
-	sysdev_driver_unregister(&cpu_sysdev_class, &mc_sysdev_driver);
-	put_online_cpus();
-
-	platform_device_unregister(microcode_pdev);
-
-	microcode_ops = NULL;
-
-	printk(KERN_INFO
-	       "Microcode Update Driver: v" MICROCODE_VERSION " removed.\n");
-}
-EXPORT_SYMBOL_GPL(microcode_exit);