* 2006 Shaohua Li <shaohua.li@intel.com>
*
* This driver allows to upgrade microcode on Intel processors
- * belonging to IA-32 family - PentiumPro, Pentium II,
+ * belonging to IA-32 family - PentiumPro, Pentium II,
* Pentium III, Xeon, Pentium 4, etc.
*
- * Reference: Section 8.10 of Volume III, Intel Pentium 4 Manual,
- * Order Number 245472 or free download from:
- *
- * http://developer.intel.com/design/pentium4/manuals/245472.htm
+ * 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
*
* 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>,
+ * 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
+ * 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.
#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>
return 0;
/* check extended signature checksum */
for (i = 0; i < ext_sigcount; i++) {
- ext_sig = (struct extended_signature *)((void *)ext_header
- + EXT_HEADER_SIZE + EXT_SIGNATURE_SIZE * i);
+ ext_sig = (void *)ext_header + EXT_HEADER_SIZE +
+ EXT_SIGNATURE_SIZE * i;
sum = orig_sum
- (mc_header->sig + mc_header->pf + mc_header->cksum)
+ (ext_sig->sig + ext_sig->pf + ext_sig->cksum);
if (total_size <= get_datasize(mc_header) + MC_HEADER_SIZE)
return 0;
- ext_header = (struct extended_sigtable *)(mc +
- get_datasize(mc_header) + MC_HEADER_SIZE);
+ ext_header = mc + get_datasize(mc_header) + MC_HEADER_SIZE;
ext_sigcount = ext_header->count;
- ext_sig = (struct extended_signature *)((void *)ext_header
- + EXT_HEADER_SIZE);
+ ext_sig = (void *)ext_header + EXT_HEADER_SIZE;
for (i = 0; i < ext_sigcount; i++) {
if (microcode_update_match(cpu, mc_header,
ext_sig->sig, ext_sig->pf))
}
return 0;
find:
- pr_debug("microcode: CPU %d found a matching microcode update with"
+ pr_debug("microcode: CPU%d found a matching microcode update with"
" version 0x%x (current=0x%x)\n", cpu, mc_header->rev,uci->rev);
new_mc = vmalloc(total_size);
if (!new_mc) {
return;
/* serialize access to the physical write to MSR 0x79 */
- spin_lock_irqsave(µcode_update_lock, flags);
+ spin_lock_irqsave(µcode_update_lock, flags);
/* write microcode via MSR 0x79 */
wrmsr(MSR_IA32_UCODE_WRITE,
- (unsigned long) uci->mc->bits,
+ (unsigned long) uci->mc->bits,
(unsigned long) uci->mc->bits >> 16 >> 16);
wrmsr(MSR_IA32_UCODE_REV, 0, 0);
spin_unlock_irqrestore(µcode_update_lock, flags);
if (val[1] != uci->mc->hdr.rev) {
- printk(KERN_ERR "microcode: CPU%d updated from revision "
+ printk(KERN_ERR "microcode: CPU%d update from revision "
"0x%x to 0x%x failed\n", cpu_num, uci->rev, val[1]);
return;
}
- pr_debug("microcode: CPU%d updated from revision "
- "0x%x to 0x%x, date = %08x \n",
+ printk(KERN_INFO "microcode: CPU%d updated from revision "
+ "0x%x to 0x%x, date = %08x \n",
cpu_num, uci->rev, val[1], uci->mc->hdr.date);
uci->rev = val[1];
}
void *new_mc = NULL;
int cpu;
cpumask_t old;
+ cpumask_of_cpu_ptr_declare(newmask);
old = current->cpus_allowed;
if (!uci->valid)
continue;
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ cpumask_of_cpu_ptr_next(newmask, cpu);
+ set_cpus_allowed_ptr(current, newmask);
error = get_maching_microcode(new_mc, cpu);
if (error < 0)
goto out;
vfree(new_mc);
if (cursor < 0)
error = cursor;
- set_cpus_allowed(current, old);
+ 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;
}
#define microcode_dev_exit() do { } while(0)
#endif
-static long get_next_ucode_from_buffer(void **mc, void *buf,
+static long get_next_ucode_from_buffer(void **mc, const u8 *buf,
unsigned long size, long offset)
{
microcode_header_t *mc_header;
char name[30];
struct cpuinfo_x86 *c = &cpu_data(cpu);
const struct firmware *firmware;
- void *buf;
+ const u8 *buf;
unsigned long size;
long offset = 0;
int error;
c->x86, c->x86_model, c->x86_mask);
error = request_firmware(&firmware, name, µcode_pdev->dev);
if (error) {
- pr_debug("ucode data file %s load failed\n", name);
+ pr_debug("microcode: data file %s load failed\n", name);
return error;
}
- buf = (void *)firmware->data;
+ buf = firmware->data;
size = firmware->size;
while ((offset = get_next_ucode_from_buffer(&mc, buf, size, offset))
> 0) {
struct cpuinfo_x86 *c = &cpu_data(cpu);
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
cpumask_t old;
+ cpumask_of_cpu_ptr(newmask, cpu);
unsigned int val[2];
int err = 0;
return 0;
old = current->cpus_allowed;
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, newmask);
/* Check if the microcode we have in memory matches the CPU */
if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
" sig=0x%x, pf=0x%x, rev=0x%x\n",
cpu, uci->sig, uci->pf, uci->rev);
- set_cpus_allowed(current, old);
+ set_cpus_allowed_ptr(current, &old);
return err;
}
static void microcode_init_cpu(int cpu, int resume)
{
cpumask_t old;
+ cpumask_of_cpu_ptr(newmask, cpu);
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
old = current->cpus_allowed;
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, newmask);
mutex_lock(µcode_mutex);
collect_cpu_info(cpu);
if (uci->valid && system_state == SYSTEM_RUNNING && !resume)
cpu_request_microcode(cpu);
mutex_unlock(µcode_mutex);
- set_cpus_allowed(current, old);
+ set_cpus_allowed_ptr(current, &old);
}
static void microcode_fini_cpu(int cpu)
mutex_unlock(µcode_mutex);
}
-static ssize_t reload_store(struct sys_device *dev, const char *buf, size_t sz)
+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;
return -EINVAL;
if (val == 1) {
cpumask_t old;
+ cpumask_of_cpu_ptr(newmask, cpu);
old = current->cpus_allowed;
get_online_cpus();
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, newmask);
mutex_lock(µcode_mutex);
if (uci->valid)
err = cpu_request_microcode(cpu);
mutex_unlock(µcode_mutex);
put_online_cpus();
- set_cpus_allowed(current, old);
+ set_cpus_allowed_ptr(current, &old);
}
if (err)
return err;
return sz;
}
-static ssize_t version_show(struct sys_device *dev, char *buf)
+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->rev);
}
-static ssize_t pf_show(struct sys_device *dev, char *buf)
+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;
if (!cpu_online(cpu))
return 0;
- pr_debug("Microcode:CPU %d added\n", cpu);
+ pr_debug("microcode: CPU%d added\n", cpu);
memset(uci, 0, sizeof(*uci));
err = sysfs_create_group(&sys_dev->kobj, &mc_attr_group);
if (!cpu_online(cpu))
return 0;
- pr_debug("Microcode:CPU %d removed\n", cpu);
+ pr_debug("microcode: CPU%d removed\n", cpu);
microcode_fini_cpu(cpu);
sysfs_remove_group(&sys_dev->kobj, &mc_attr_group);
return 0;
if (!cpu_online(cpu))
return 0;
- pr_debug("Microcode:CPU %d resumed\n", cpu);
+ pr_debug("microcode: CPU%d resumed\n", cpu);
/* only CPU 0 will apply ucode here */
apply_microcode(0);
return 0;
}
case CPU_DOWN_FAILED_FROZEN:
if (sysfs_create_group(&sys_dev->kobj, &mc_attr_group))
- printk(KERN_ERR "Microcode: Failed to create the sysfs "
+ printk(KERN_ERR "microcode: Failed to create the sysfs "
"group for CPU%d\n", cpu);
break;
case CPU_DOWN_PREPARE:
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata mc_cpu_notifier = {
+static struct notifier_block __refdata mc_cpu_notifier = {
.notifier_call = mc_cpu_callback,
};
{
int error;
+ printk(KERN_INFO
+ "IA-32 Microcode Update Driver: v" MICROCODE_VERSION " <tigran@aivazian.fsnet.co.uk>\n");
+
error = microcode_dev_init();
if (error)
return error;
}
register_hotcpu_notifier(&mc_cpu_notifier);
-
- printk(KERN_INFO
- "IA-32 Microcode Update Driver: v" MICROCODE_VERSION " <tigran@aivazian.fsnet.co.uk>\n");
return 0;
}
projects / linux-2.6-omap-h63xx.git / blobdiff