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Merge with rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

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Steve French 2005-06-01 15:02:37 -07:00
parent af6f5e3247 eff910a91a
commit 12725675e2
50 changed files with 2130 additions and 612 deletions
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128
Documentation/cpu-freq/cpufreq-stats.txt Normal file
View File

@ -0,0 +1,128 @@
CPU frequency and voltage scaling statictics in the Linux(TM) kernel
L i n u x c p u f r e q - s t a t s d r i v e r
- information for users -
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Contents
1. Introduction
2. Statistics Provided (with example)
3. Configuring cpufreq-stats
1. Introduction
cpufreq-stats is a driver that provices CPU frequency statistics for each CPU.
This statistics is provided in /sysfs as a bunch of read_only interfaces. This
interface (when configured) will appear in a seperate directory under cpufreq
in /sysfs (<sysfs root>/devices/system/cpu/cpuX/cpufreq/stats/) for each CPU.
Various statistics will form read_only files under this directory.
This driver is designed to be independent of any particular cpufreq_driver
that may be running on your CPU. So, it will work with any cpufreq_driver.
2. Statistics Provided (with example)
cpufreq stats provides following statistics (explained in detail below).
- time_in_state
- total_trans
- trans_table
All the statistics will be from the time the stats driver has been inserted
to the time when a read of a particular statistic is done. Obviously, stats
driver will not have any information about the the frequcny transitions before
the stats driver insertion.
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # ls -l
total 0
drwxr-xr-x 2 root root 0 May 14 16:06 .
drwxr-xr-x 3 root root 0 May 14 15:58 ..
-r--r--r-- 1 root root 4096 May 14 16:06 time_in_state
-r--r--r-- 1 root root 4096 May 14 16:06 total_trans
-r--r--r-- 1 root root 4096 May 14 16:06 trans_table
--------------------------------------------------------------------------------
- time_in_state
This gives the amount of time spent in each of the frequencies supported by
this CPU. The cat output will have "<frequency> <time>" pair in each line, which
will mean this CPU spent <time> usertime units of time at <frequency>. Output
will have one line for each of the supported freuencies. usertime units here
is 10mS (similar to other time exported in /proc).
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat time_in_state
3600000 2089
3400000 136
3200000 34
3000000 67
2800000 172488
--------------------------------------------------------------------------------
- total_trans
This gives the total number of frequency transitions on this CPU. The cat
output will have a single count which is the total number of frequency
transitions.
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat total_trans
20
--------------------------------------------------------------------------------
- trans_table
This will give a fine grained information about all the CPU frequency
transitions. The cat output here is a two dimensional matrix, where an entry
<i,j> (row i, column j) represents the count of number of transitions from
Freq_i to Freq_j. Freq_i is in descending order with increasing rows and
Freq_j is in descending order with increasing columns. The output here also
contains the actual freq values for each row and column for better readability.
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat trans_table
From : To
: 3600000 3400000 3200000 3000000 2800000
3600000: 0 5 0 0 0
3400000: 4 0 2 0 0
3200000: 0 1 0 2 0
3000000: 0 0 1 0 3
2800000: 0 0 0 2 0
--------------------------------------------------------------------------------
3. Configuring cpufreq-stats
To configure cpufreq-stats in your kernel
Config Main Menu
Power management options (ACPI, APM) --->
CPU Frequency scaling --->
[*] CPU Frequency scaling
<*> CPU frequency translation statistics
[*] CPU frequency translation statistics details
"CPU Frequency scaling" (CONFIG_CPU_FREQ) should be enabled to configure
cpufreq-stats.
"CPU frequency translation statistics" (CONFIG_CPU_FREQ_STAT) provides the
basic statistics which includes time_in_state and total_trans.
"CPU frequency translation statistics details" (CONFIG_CPU_FREQ_STAT_DETAILS)
provides fine grained cpufreq stats by trans_table. The reason for having a
seperate config option for trans_table is:
- trans_table goes against the traditional /sysfs rule of one value per
interface. It provides a whole bunch of value in a 2 dimensional matrix
form.
Once these two options are enabled and your CPU supports cpufrequency, you
will be able to see the CPU frequency statistics in /sysfs.

6
MAINTAINERS
View File

@ -239,6 +239,12 @@ L: linux-usb-devel@lists.sourceforge.net
W: http://www.linux-usb.org/SpeedTouch/
S: Maintained
ALI1563 I2C DRIVER
P: Rudolf Marek
M: r.marek@sh.cvut.cz
L: sensors@stimpy.netroedge.com
S: Maintained
ALPHA PORT
P: Richard Henderson
M: rth@twiddle.net

2
arch/h8300/kernel/process.c
View File

@ -54,7 +54,7 @@ asmlinkage void ret_from_fork(void);
void default_idle(void)
{
while(1) {
if (need_resched()) {
if (!need_resched()) {
local_irq_enable();
__asm__("sleep");
local_irq_disable();

14
arch/i386/kernel/cpu/cpufreq/Kconfig
View File

@ -23,7 +23,7 @@ config X86_ACPI_CPUFREQ
If in doubt, say N.
config ELAN_CPUFREQ
tristate "AMD Elan"
tristate "AMD Elan SC400 and SC410"
select CPU_FREQ_TABLE
depends on X86_ELAN
---help---
@ -38,6 +38,18 @@ config ELAN_CPUFREQ
If in doubt, say N.
config SC520_CPUFREQ
tristate "AMD Elan SC520"
select CPU_FREQ_TABLE
depends on X86_ELAN
---help---
This adds the CPUFreq driver for AMD Elan SC520 processor.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
config X86_POWERNOW_K6
tristate "AMD Mobile K6-2/K6-3 PowerNow!"
select CPU_FREQ_TABLE

1
arch/i386/kernel/cpu/cpufreq/Makefile
View File

@ -3,6 +3,7 @@ obj-$(CONFIG_X86_POWERNOW_K7) += powernow-k7.o
obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o
obj-$(CONFIG_X86_LONGHAUL) += longhaul.o
obj-$(CONFIG_ELAN_CPUFREQ) += elanfreq.o
obj-$(CONFIG_SC520_CPUFREQ) += sc520_freq.o
obj-$(CONFIG_X86_LONGRUN) += longrun.o
obj-$(CONFIG_X86_GX_SUSPMOD) += gx-suspmod.o
obj-$(CONFIG_X86_SPEEDSTEP_ICH) += speedstep-ich.o

58
arch/i386/kernel/cpu/cpufreq/longhaul.c
View File

@ -29,6 +29,7 @@
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <asm/msr.h>
#include <asm/timex.h>
@ -119,7 +120,13 @@ static int longhaul_get_cpu_mult(void)
static void do_powersaver(union msr_longhaul *longhaul,
unsigned int clock_ratio_index)
{
struct pci_dev *dev;
unsigned long flags;
unsigned int tmp_mask;
int version;
int i;
u16 pci_cmd;
u16 cmd_state[64];
switch (cpu_model) {
case CPU_EZRA_T:
@ -137,17 +144,58 @@ static void do_powersaver(union msr_longhaul *longhaul,
longhaul->bits.SoftBusRatio4 = (clock_ratio_index & 0x10) >> 4;
longhaul->bits.EnableSoftBusRatio = 1;
longhaul->bits.RevisionKey = 0;
local_irq_disable();
wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
preempt_disable();
local_irq_save(flags);
/*
* get current pci bus master state for all devices
* and clear bus master bit
*/
dev = NULL;
i = 0;
do {
dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
if (dev != NULL) {
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
cmd_state[i++] = pci_cmd;
pci_cmd &= ~PCI_COMMAND_MASTER;
pci_write_config_word(dev, PCI_COMMAND, pci_cmd);
}
} while (dev != NULL);
tmp_mask=inb(0x21); /* works on C3. save mask. */
outb(0xFE,0x21); /* TMR0 only */
outb(0xFF,0x80); /* delay */
local_irq_enable();
__hlt();
wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
__hlt();
local_irq_disable();
outb(tmp_mask,0x21); /* restore mask */
/* restore pci bus master state for all devices */
dev = NULL;
i = 0;
do {
dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
if (dev != NULL) {
pci_cmd = cmd_state[i++];
pci_write_config_byte(dev, PCI_COMMAND, pci_cmd);
}
} while (dev != NULL);
local_irq_restore(flags);
preempt_enable();
/* disable bus ratio bit */
rdmsrl(MSR_VIA_LONGHAUL, longhaul->val);
longhaul->bits.EnableSoftBusRatio = 0;
longhaul->bits.RevisionKey = version;
local_irq_disable();
wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
local_irq_enable();
}
/**
@ -578,7 +626,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
longhaul_setup_voltagescaling();
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cpuinfo.transition_latency = 200000; /* nsec */
policy->cur = calc_speed(longhaul_get_cpu_mult());
ret = cpufreq_frequency_table_cpuinfo(policy, longhaul_table);

11
arch/i386/kernel/cpu/cpufreq/powernow-k7.c
View File

@ -23,6 +23,7 @@
#include <linux/dmi.h>
#include <asm/msr.h>
#include <asm/timer.h>
#include <asm/timex.h>
#include <asm/io.h>
#include <asm/system.h>
@ -586,13 +587,17 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy)
rdmsrl (MSR_K7_FID_VID_STATUS, fidvidstatus.val);
/* A K7 with powernow technology is set to max frequency by BIOS */
fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.MFID];
/* recalibrate cpu_khz */
result = recalibrate_cpu_khz();
if (result)
return result;
fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.CFID];
if (!fsb) {
printk(KERN_WARNING PFX "can not determine bus frequency\n");
return -EINVAL;
}
dprintk("FSB: %3d.%03d MHz\n", fsb/1000, fsb%1000);
dprintk("FSB: %3dMHz\n", fsb/1000);
if (dmi_check_system(powernow_dmi_table) || acpi_force) {
printk (KERN_INFO PFX "PSB/PST known to be broken. Trying ACPI instead\n");

113
arch/i386/kernel/cpu/cpufreq/powernow-k8.c
View File

@ -4,7 +4,7 @@
* GNU general public license version 2. See "COPYING" or
* http://www.gnu.org/licenses/gpl.html
*
* Support : paul.devriendt@amd.com
* Support : mark.langsdorf@amd.com
*
* Based on the powernow-k7.c module written by Dave Jones.
* (C) 2003 Dave Jones <davej@codemonkey.org.uk> on behalf of SuSE Labs
@ -15,12 +15,13 @@
*
* Valuable input gratefully received from Dave Jones, Pavel Machek,
* Dominik Brodowski, and others.
* Originally developed by Paul Devriendt.
* Processor information obtained from Chapter 9 (Power and Thermal Management)
* of the "BIOS and Kernel Developer's Guide for the AMD Athlon 64 and AMD
* Opteron Processors" available for download from www.amd.com
*
* Tables for specific CPUs can be infrerred from
* http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf
* http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf
*/
#include <linux/kernel.h>
@ -30,6 +31,7 @@
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/cpumask.h>
#include <asm/msr.h>
#include <asm/io.h>
@ -42,7 +44,7 @@
#define PFX "powernow-k8: "
#define BFX PFX "BIOS error: "
#define VERSION "version 1.00.09e"
#define VERSION "version 1.40.2"
#include "powernow-k8.h"
/* serialize freq changes */
@ -50,6 +52,10 @@ static DECLARE_MUTEX(fidvid_sem);
static struct powernow_k8_data *powernow_data[NR_CPUS];
#ifndef CONFIG_SMP
static cpumask_t cpu_core_map[1];
#endif
/* Return a frequency in MHz, given an input fid */
static u32 find_freq_from_fid(u32 fid)
{
@ -274,11 +280,18 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid
{
u32 rvosteps = data->rvo;
u32 savefid = data->currfid;
u32 maxvid, lo;
dprintk("ph1 (cpu%d): start, currfid 0x%x, currvid 0x%x, reqvid 0x%x, rvo 0x%x\n",
smp_processor_id(),
data->currfid, data->currvid, reqvid, data->rvo);
rdmsr(MSR_FIDVID_STATUS, lo, maxvid);
maxvid = 0x1f & (maxvid >> 16);
dprintk("ph1 maxvid=0x%x\n", maxvid);
if (reqvid < maxvid) /* lower numbers are higher voltages */
reqvid = maxvid;
while (data->currvid > reqvid) {
dprintk("ph1: curr 0x%x, req vid 0x%x\n",
data->currvid, reqvid);
@ -286,8 +299,8 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid
return 1;
}
while ((rvosteps > 0) && ((data->rvo + data->currvid) > reqvid)) {
if (data->currvid == 0) {
while ((rvosteps > 0) && ((data->rvo + data->currvid) > reqvid)) {
if (data->currvid == maxvid) {
rvosteps = 0;
} else {
dprintk("ph1: changing vid for rvo, req 0x%x\n",
@ -671,7 +684,7 @@ static int find_psb_table(struct powernow_k8_data *data)
* BIOS and Kernel Developer's Guide, which is available on
* www.amd.com
*/
printk(KERN_ERR PFX "BIOS error - no PSB\n");
printk(KERN_INFO PFX "BIOS error - no PSB or ACPI _PSS objects\n");
return -ENODEV;
}
@ -695,7 +708,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
struct cpufreq_frequency_table *powernow_table;
if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) {
dprintk("register performance failed\n");
dprintk("register performance failed: bad ACPI data\n");
return -EIO;
}
@ -746,22 +759,23 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
continue;
}
if (fid < HI_FID_TABLE_BOTTOM) {
if (cntlofreq) {
/* if both entries are the same, ignore this
* one...
*/
if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) ||
(powernow_table[i].index != powernow_table[cntlofreq].index)) {
printk(KERN_ERR PFX "Too many lo freq table entries\n");
goto err_out_mem;
}
dprintk("double low frequency table entry, ignoring it.\n");
powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
continue;
} else
cntlofreq = i;
/* verify only 1 entry from the lo frequency table */
if (fid < HI_FID_TABLE_BOTTOM) {
if (cntlofreq) {
/* if both entries are the same, ignore this
* one...
*/
if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) ||
(powernow_table[i].index != powernow_table[cntlofreq].index)) {
printk(KERN_ERR PFX "Too many lo freq table entries\n");
goto err_out_mem;
}
dprintk("double low frequency table entry, ignoring it.\n");
powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
continue;
} else
cntlofreq = i;
}
if (powernow_table[i].frequency != (data->acpi_data.states[i].core_frequency * 1000)) {
@ -816,7 +830,7 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
{
u32 fid;
u32 vid;
int res;
int res, i;
struct cpufreq_freqs freqs;
dprintk("cpu %d transition to index %u\n", smp_processor_id(), index);
@ -841,7 +855,8 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
}
if ((fid < HI_FID_TABLE_BOTTOM) && (data->currfid < HI_FID_TABLE_BOTTOM)) {
printk("ignoring illegal change in lo freq table-%x to 0x%x\n",
printk(KERN_ERR PFX
"ignoring illegal change in lo freq table-%x to 0x%x\n",
data->currfid, fid);
return 1;
}
@ -850,18 +865,20 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
smp_processor_id(), fid, vid);
freqs.cpu = data->cpu;
freqs.old = find_khz_freq_from_fid(data->currfid);
freqs.new = find_khz_freq_from_fid(fid);
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
for_each_cpu_mask(i, cpu_core_map[data->cpu]) {
freqs.cpu = i;
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
}
down(&fidvid_sem);
res = transition_fid_vid(data, fid, vid);
up(&fidvid_sem);
freqs.new = find_khz_freq_from_fid(data->currfid);
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
for_each_cpu_mask(i, cpu_core_map[data->cpu]) {
freqs.cpu = i;
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
}
return res;
}
@ -874,6 +891,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
u32 checkvid = data->currvid;
unsigned int newstate;
int ret = -EIO;
int i;
/* only run on specific CPU from here on */
oldmask = current->cpus_allowed;
@ -902,22 +920,41 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
data->currfid, data->currvid);
if ((checkvid != data->currvid) || (checkfid != data->currfid)) {
printk(KERN_ERR PFX
"error - out of sync, fid 0x%x 0x%x, vid 0x%x 0x%x\n",
checkfid, data->currfid, checkvid, data->currvid);
printk(KERN_INFO PFX
"error - out of sync, fix 0x%x 0x%x, vid 0x%x 0x%x\n",
checkfid, data->currfid, checkvid, data->currvid);
}
if (cpufreq_frequency_table_target(pol, data->powernow_table, targfreq, relation, &newstate))
goto err_out;
down(&fidvid_sem);
for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
/* make sure the sibling is initialized */
if (!powernow_data[i]) {
ret = 0;
up(&fidvid_sem);
goto err_out;
}
}
powernow_k8_acpi_pst_values(data, newstate);
if (transition_frequency(data, newstate)) {
printk(KERN_ERR PFX "transition frequency failed\n");
ret = 1;
up(&fidvid_sem);
goto err_out;
}
/* Update all the fid/vids of our siblings */
for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
powernow_data[i]->currvid = data->currvid;
powernow_data[i]->currfid = data->currfid;
}
up(&fidvid_sem);
pol->cur = find_khz_freq_from_fid(data->currfid);
ret = 0;
@ -962,7 +999,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
*/
if ((num_online_cpus() != 1) || (num_possible_cpus() != 1)) {
printk(KERN_INFO PFX "MP systems not supported by PSB BIOS structure\n");
printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n");
kfree(data);
return -ENODEV;
}
@ -1003,6 +1040,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
schedule();
pol->governor = CPUFREQ_DEFAULT_GOVERNOR;
pol->cpus = cpu_core_map[pol->cpu];
/* Take a crude guess here.
* That guess was in microseconds, so multiply with 1000 */
@ -1069,7 +1107,7 @@ static unsigned int powernowk8_get (unsigned int cpu)
return 0;
}
preempt_disable();
if (query_current_values_with_pending_wait(data))
goto out;
@ -1127,9 +1165,10 @@ static void __exit powernowk8_exit(void)
cpufreq_unregister_driver(&cpufreq_amd64_driver);
}
MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com>");
MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com> and Mark Langsdorf <mark.langsdorf@amd.com.");
MODULE_DESCRIPTION("AMD Athlon 64 and Opteron processor frequency driver.");
MODULE_LICENSE("GPL");
late_initcall(powernowk8_init);
module_exit(powernowk8_exit);

15
arch/i386/kernel/cpu/cpufreq/powernow-k8.h
View File

@ -174,3 +174,18 @@ static int core_voltage_post_transition(struct powernow_k8_data *data, u32 reqvi
static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid);
static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index);
#ifndef for_each_cpu_mask
#define for_each_cpu_mask(i,mask) for (i=0;i<1;i++)
#endif
#ifdef CONFIG_SMP
static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
{
}
#else
static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
{
cpu_set(0, cpu_sharedcore_mask[0]);
}
#endif

186
arch/i386/kernel/cpu/cpufreq/sc520_freq.c Normal file
View File

@ -0,0 +1,186 @@
/*
* sc520_freq.c: cpufreq driver for the AMD Elan sc520
*
* Copyright (C) 2005 Sean Young <sean@mess.org>
*
* 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.
*
* Based on elanfreq.c
*
* 2005-03-30: - initial revision
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/cpufreq.h>
#include <asm/msr.h>
#include <asm/timex.h>
#include <asm/io.h>
#define MMCR_BASE 0xfffef000 /* The default base address */
#define OFFS_CPUCTL 0x2 /* CPU Control Register */
static __u8 __iomem *cpuctl;
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "sc520_freq", msg)
static struct cpufreq_frequency_table sc520_freq_table[] = {
{0x01, 100000},
{0x02, 133000},
{0, CPUFREQ_TABLE_END},
};
static unsigned int sc520_freq_get_cpu_frequency(unsigned int cpu)
{
u8 clockspeed_reg = *cpuctl;
switch (clockspeed_reg & 0x03) {
default:
printk(KERN_ERR "sc520_freq: error: cpuctl register has unexpected value %02x\n", clockspeed_reg);
case 0x01:
return 100000;
case 0x02:
return 133000;
}
}
static void sc520_freq_set_cpu_state (unsigned int state)
{
struct cpufreq_freqs freqs;
u8 clockspeed_reg;
freqs.old = sc520_freq_get_cpu_frequency(0);
freqs.new = sc520_freq_table[state].frequency;
freqs.cpu = 0; /* AMD Elan is UP */
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
dprintk("attempting to set frequency to %i kHz\n",
sc520_freq_table[state].frequency);
local_irq_disable();
clockspeed_reg = *cpuctl & ~0x03;
*cpuctl = clockspeed_reg | sc520_freq_table[state].index;
local_irq_enable();
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
};
static int sc520_freq_verify (struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &sc520_freq_table[0]);
}
static int sc520_freq_target (struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int newstate = 0;
if (cpufreq_frequency_table_target(policy, sc520_freq_table, target_freq, relation, &newstate))
return -EINVAL;
sc520_freq_set_cpu_state(newstate);
return 0;
}
/*
* Module init and exit code
*/
static int sc520_freq_cpu_init(struct cpufreq_policy *policy)
{
struct cpuinfo_x86 *c = cpu_data;
int result;
/* capability check */
if (c->x86_vendor != X86_VENDOR_AMD ||
c->x86 != 4 || c->x86_model != 9)
return -ENODEV;
/* cpuinfo and default policy values */
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
policy->cpuinfo.transition_latency = 1000000; /* 1ms */
policy->cur = sc520_freq_get_cpu_frequency(0);
result = cpufreq_frequency_table_cpuinfo(policy, sc520_freq_table);
if (result)
return (result);
cpufreq_frequency_table_get_attr(sc520_freq_table, policy->cpu);
return 0;
}
static int sc520_freq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr* sc520_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver sc520_freq_driver = {
.get = sc520_freq_get_cpu_frequency,
.verify = sc520_freq_verify,
.target = sc520_freq_target,
.init = sc520_freq_cpu_init,
.exit = sc520_freq_cpu_exit,
.name = "sc520_freq",
.owner = THIS_MODULE,
.attr = sc520_freq_attr,
};
static int __init sc520_freq_init(void)
{
struct cpuinfo_x86 *c = cpu_data;
/* Test if we have the right hardware */
if(c->x86_vendor != X86_VENDOR_AMD ||
c->x86 != 4 || c->x86_model != 9) {
dprintk("no Elan SC520 processor found!\n");
return -ENODEV;
}
cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1);
if(!cpuctl) {
printk(KERN_ERR "sc520_freq: error: failed to remap memory\n");
return -ENOMEM;
}
return cpufreq_register_driver(&sc520_freq_driver);
}
static void __exit sc520_freq_exit(void)
{
cpufreq_unregister_driver(&sc520_freq_driver);
iounmap(cpuctl);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Sean Young <sean@mess.org>");
MODULE_DESCRIPTION("cpufreq driver for AMD's Elan sc520 CPU");
module_init(sc520_freq_init);
module_exit(sc520_freq_exit);

6
arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
View File

@ -54,6 +54,8 @@ enum {
CPU_DOTHAN_A1,
CPU_DOTHAN_A2,
CPU_DOTHAN_B0,
CPU_MP4HT_D0,
CPU_MP4HT_E0,
};
static const struct cpu_id cpu_ids[] = {
@ -61,6 +63,8 @@ static const struct cpu_id cpu_ids[] = {
[CPU_DOTHAN_A1] = { 6, 13, 1 },
[CPU_DOTHAN_A2] = { 6, 13, 2 },
[CPU_DOTHAN_B0] = { 6, 13, 6 },
[CPU_MP4HT_D0] = {15, 3, 4 },
[CPU_MP4HT_E0] = {15, 4, 1 },
};
#define N_IDS (sizeof(cpu_ids)/sizeof(cpu_ids[0]))
@ -226,6 +230,8 @@ static struct cpu_model models[] =
{ &cpu_ids[CPU_DOTHAN_A1], NULL, 0, NULL },
{ &cpu_ids[CPU_DOTHAN_A2], NULL, 0, NULL },
{ &cpu_ids[CPU_DOTHAN_B0], NULL, 0, NULL },
{ &cpu_ids[CPU_MP4HT_D0], NULL, 0, NULL },
{ &cpu_ids[CPU_MP4HT_E0], NULL, 0, NULL },
{ NULL, }
};

6
arch/i386/kernel/cpu/cpufreq/speedstep-lib.c
View File

@ -336,7 +336,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
if (!prev_speed)
return -EIO;
dprintk("previous seped is %u\n", prev_speed);
dprintk("previous speed is %u\n", prev_speed);
local_irq_save(flags);
@ -348,7 +348,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
goto out;
}
dprintk("low seped is %u\n", *low_speed);
dprintk("low speed is %u\n", *low_speed);
/* switch to high state */
set_state(SPEEDSTEP_HIGH);
@ -358,7 +358,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
goto out;
}
dprintk("high seped is %u\n", *high_speed);
dprintk("high speed is %u\n", *high_speed);
if (*low_speed == *high_speed) {
ret = -ENODEV;

3
arch/i386/kernel/cpu/cpufreq/speedstep-smi.c
View File

@ -357,6 +357,9 @@ static int __init speedstep_init(void)
case SPEEDSTEP_PROCESSOR_PIII_C:
case SPEEDSTEP_PROCESSOR_PIII_C_EARLY:
break;
case SPEEDSTEP_PROCESSOR_P4M:
printk(KERN_INFO "speedstep-smi: you're trying to use this cpufreq driver on a Pentium 4-based CPU. Most likely it will not work.\n");
break;
default:
speedstep_processor = 0;
}

2
arch/i386/kernel/setup.c
View File

@ -1502,11 +1502,13 @@ void __init setup_arch(char **cmdline_p)
if (efi_enabled)
efi_map_memmap();
#ifdef CONFIG_ACPI_BOOT
/*
* Parse the ACPI tables for possible boot-time SMP configuration.
*/
acpi_boot_table_init();
acpi_boot_init();
#endif
#ifdef CONFIG_X86_LOCAL_APIC
if (smp_found_config)

6
arch/i386/kernel/timers/common.c
View File

@ -6,6 +6,7 @@
#include <linux/timex.h>
#include <linux/errno.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <asm/io.h>
#include <asm/timer.h>
@ -24,7 +25,7 @@
#define CALIBRATE_TIME (5 * 1000020/HZ)
unsigned long __init calibrate_tsc(void)
unsigned long calibrate_tsc(void)
{
mach_prepare_counter();
@ -139,7 +140,7 @@ bad_calibration:
#endif
/* calculate cpu_khz */
void __init init_cpu_khz(void)
void init_cpu_khz(void)
{
if (cpu_has_tsc) {
unsigned long tsc_quotient = calibrate_tsc();
@ -158,3 +159,4 @@ void __init init_cpu_khz(void)
}
}
}

20
arch/i386/kernel/timers/timer_tsc.c
View File

@ -320,6 +320,26 @@ core_initcall(cpufreq_tsc);
static inline void cpufreq_delayed_get(void) { return; }
#endif
int recalibrate_cpu_khz(void)
{
#ifndef CONFIG_SMP
unsigned long cpu_khz_old = cpu_khz;
if (cpu_has_tsc) {
init_cpu_khz();
cpu_data[0].loops_per_jiffy =
cpufreq_scale(cpu_data[0].loops_per_jiffy,
cpu_khz_old,
cpu_khz);
return 0;
} else
return -ENODEV;
#else
return -ENODEV;
#endif
}
EXPORT_SYMBOL(recalibrate_cpu_khz);
static void mark_offset_tsc(void)
{
unsigned long lost,delay;

10
arch/ppc/syslib/prom_init.c
View File

@ -626,8 +626,18 @@ inspect_node(phandle node, struct device_node *dad,
l = call_prom("package-to-path", 3, 1, node,
mem_start, mem_end - mem_start);
if (l >= 0) {
char *p, *ep;
np->full_name = PTRUNRELOC((char *) mem_start);
*(char *)(mem_start + l) = 0;
/* Fixup an Apple bug where they have bogus \0 chars in the
* middle of the path in some properties
*/
for (p = (char *)mem_start, ep = p + l; p < ep; p++)
if ((*p) == '\0') {
memmove(p, p+1, ep - p);
ep--;
}
mem_start = ALIGNUL(mem_start + l + 1);
}

8
arch/ppc64/kernel/pSeries_reconfig.c
View File

@ -47,14 +47,6 @@ static void remove_node_proc_entries(struct device_node *np)
remove_proc_entry(pp->name, np->pde);
pp = pp->next;
}
/* Assuming that symlinks have the same parent directory as
* np->pde.
*/
if (np->name_link)
remove_proc_entry(np->name_link->name, parent->pde);
if (np->addr_link)
remove_proc_entry(np->addr_link->name, parent->pde);
if (np->pde)
remove_proc_entry(np->pde->name, parent->pde);
}

10
arch/ppc64/kernel/prom_init.c
View File

@ -1566,7 +1566,7 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
{
int l, align;
phandle child;
char *namep, *prev_name, *sstart;
char *namep, *prev_name, *sstart, *p, *ep;
unsigned long soff;
unsigned char *valp;
unsigned long offset = reloc_offset();
@ -1588,6 +1588,14 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
call_prom("package-to-path", 3, 1, node, namep, l);
}
namep[l] = '\0';
/* Fixup an Apple bug where they have bogus \0 chars in the
* middle of the path in some properties
*/
for (p = namep, ep = namep + l; p < ep; p++)
if (*p == '\0') {
memmove(p, p+1, ep - p);
ep--; l--;
}
*mem_start = _ALIGN(((unsigned long) namep) + strlen(namep) + 1, 4);
}

2
arch/ppc64/kernel/time.c
View File

@ -325,9 +325,7 @@ int timer_interrupt(struct pt_regs * regs)
irq_enter();
#ifndef CONFIG_PPC_ISERIES
profile_tick(CPU_PROFILING, regs);
#endif
lpaca->lppaca.int_dword.fields.decr_int = 0;

1
arch/x86_64/Kconfig
View File

@ -305,6 +305,7 @@ config HPET_TIMER
config X86_PM_TIMER
bool "PM timer"
depends on ACPI
default y
help
Support the ACPI PM timer for time keeping. This is slow,

1
arch/x86_64/kernel/io_apic.c
View File

@ -37,6 +37,7 @@
#include <asm/desc.h>
#include <asm/proto.h>
#include <asm/mach_apic.h>
#include <asm/acpi.h>
#define __apicdebuginit __init

1
arch/x86_64/kernel/mpparse.c
View File

@ -30,6 +30,7 @@
#include <asm/pgalloc.h>
#include <asm/io_apic.h>
#include <asm/proto.h>
#include <asm/acpi.h>
/* Have we found an MP table */
int smp_found_config;

2
arch/x86_64/kernel/time.c
View File

@ -27,7 +27,9 @@
#include <linux/bcd.h>
#include <linux/kallsyms.h>
#include <linux/acpi.h>
#ifdef CONFIG_ACPI
#include <acpi/achware.h> /* for PM timer frequency */
#endif
#include <asm/8253pit.h>
#include <asm/pgtable.h>
#include <asm/vsyscall.h>

24
drivers/cpufreq/Kconfig
View File

@ -46,6 +46,10 @@ config CPU_FREQ_STAT_DETAILS
This will show detail CPU frequency translation table in sysfs file
system
# Note that it is not currently possible to set the other governors (such as ondemand)
# as the default, since if they fail to initialise, cpufreq will be
# left in an undefined state.
choice
prompt "Default CPUFreq governor"
default CPU_FREQ_DEFAULT_GOV_USERSPACE if CPU_FREQ_SA1100 || CPU_FREQ_SA1110
@ -115,4 +119,24 @@ config CPU_FREQ_GOV_ONDEMAND
If in doubt, say N.
config CPU_FREQ_GOV_CONSERVATIVE
tristate "'conservative' cpufreq governor"
depends on CPU_FREQ
help
'conservative' - this driver is rather similar to the 'ondemand'
governor both in its source code and its purpose, the difference is
its optimisation for better suitability in a battery powered
environment. The frequency is gracefully increased and decreased
rather than jumping to 100% when speed is required.
If you have a desktop machine then you should really be considering
the 'ondemand' governor instead, however if you are using a laptop,
PDA or even an AMD64 based computer (due to the unacceptable
step-by-step latency issues between the minimum and maximum frequency
transitions in the CPU) you will probably want to use this governor.
For details, take a look at linux/Documentation/cpu-freq.
If in doubt, say N.
endif # CPU_FREQ

1
drivers/cpufreq/Makefile
View File

@ -8,6 +8,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_PERFORMANCE) += cpufreq_performance.o
obj-$(CONFIG_CPU_FREQ_GOV_POWERSAVE) += cpufreq_powersave.o
obj-$(CONFIG_CPU_FREQ_GOV_USERSPACE) += cpufreq_userspace.o
obj-$(CONFIG_CPU_FREQ_GOV_ONDEMAND) += cpufreq_ondemand.o
obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE) += cpufreq_conservative.o
# CPUfreq cross-arch helpers
obj-$(CONFIG_CPU_FREQ_TABLE) += freq_table.o

8
drivers/cpufreq/cpufreq.c
View File

@ -258,7 +258,7 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state)
(likely(cpufreq_cpu_data[freqs->cpu]->cur)) &&
(unlikely(freqs->old != cpufreq_cpu_data[freqs->cpu]->cur)))
{
printk(KERN_WARNING "Warning: CPU frequency is %u, "
dprintk(KERN_WARNING "Warning: CPU frequency is %u, "
"cpufreq assumed %u kHz.\n", freqs->old, cpufreq_cpu_data[freqs->cpu]->cur);
freqs->old = cpufreq_cpu_data[freqs->cpu]->cur;
}
@ -814,7 +814,7 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, unsigne
{
struct cpufreq_freqs freqs;
printk(KERN_WARNING "Warning: CPU frequency out of sync: cpufreq and timing "
dprintk(KERN_WARNING "Warning: CPU frequency out of sync: cpufreq and timing "
"core thinks of %u, is %u kHz.\n", old_freq, new_freq);
freqs.cpu = cpu;
@ -923,7 +923,7 @@ static int cpufreq_suspend(struct sys_device * sysdev, u32 state)
struct cpufreq_freqs freqs;
if (!(cpufreq_driver->flags & CPUFREQ_PM_NO_WARN))
printk(KERN_DEBUG "Warning: CPU frequency is %u, "
dprintk(KERN_DEBUG "Warning: CPU frequency is %u, "
"cpufreq assumed %u kHz.\n",
cur_freq, cpu_policy->cur);
@ -1004,7 +1004,7 @@ static int cpufreq_resume(struct sys_device * sysdev)
struct cpufreq_freqs freqs;
if (!(cpufreq_driver->flags & CPUFREQ_PM_NO_WARN))
printk(KERN_WARNING "Warning: CPU frequency"
dprintk(KERN_WARNING "Warning: CPU frequency"
"is %u, cpufreq assumed %u kHz.\n",
cur_freq, cpu_policy->cur);

586
drivers/cpufreq/cpufreq_conservative.c Normal file
View File

@ -0,0 +1,586 @@
/*
* drivers/cpufreq/cpufreq_conservative.c
*
* Copyright (C) 2001 Russell King
* (C) 2003 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>.
* Jun Nakajima <jun.nakajima@intel.com>
* (C) 2004 Alexander Clouter <alex-kernel@digriz.org.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ctype.h>
#include <linux/cpufreq.h>
#include <linux/sysctl.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/sysfs.h>
#include <linux/sched.h>
#include <linux/kmod.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/kernel_stat.h>
#include <linux/percpu.h>
/*
* dbs is used in this file as a shortform for demandbased switching
* It helps to keep variable names smaller, simpler
*/
#define DEF_FREQUENCY_UP_THRESHOLD (80)
#define MIN_FREQUENCY_UP_THRESHOLD (0)
#define MAX_FREQUENCY_UP_THRESHOLD (100)
#define DEF_FREQUENCY_DOWN_THRESHOLD (20)
#define MIN_FREQUENCY_DOWN_THRESHOLD (0)
#define MAX_FREQUENCY_DOWN_THRESHOLD (100)
/*
* The polling frequency of this governor depends on the capability of
* the processor. Default polling frequency is 1000 times the transition
* latency of the processor. The governor will work on any processor with
* transition latency <= 10mS, using appropriate sampling
* rate.
* For CPUs with transition latency > 10mS (mostly drivers with CPUFREQ_ETERNAL)
* this governor will not work.
* All times here are in uS.
*/
static unsigned int def_sampling_rate;
#define MIN_SAMPLING_RATE (def_sampling_rate / 2)
#define MAX_SAMPLING_RATE (500 * def_sampling_rate)
#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (100000)
#define DEF_SAMPLING_DOWN_FACTOR (5)
#define TRANSITION_LATENCY_LIMIT (10 * 1000)
static void do_dbs_timer(void *data);
struct cpu_dbs_info_s {
struct cpufreq_policy *cur_policy;
unsigned int prev_cpu_idle_up;
unsigned int prev_cpu_idle_down;
unsigned int enable;
};
static DEFINE_PER_CPU(struct cpu_dbs_info_s, cpu_dbs_info);
static unsigned int dbs_enable; /* number of CPUs using this policy */
static DECLARE_MUTEX (dbs_sem);
static DECLARE_WORK (dbs_work, do_dbs_timer, NULL);
struct dbs_tuners {
unsigned int sampling_rate;
unsigned int sampling_down_factor;
unsigned int up_threshold;
unsigned int down_threshold;
unsigned int ignore_nice;
unsigned int freq_step;
};
static struct dbs_tuners dbs_tuners_ins = {
.up_threshold = DEF_FREQUENCY_UP_THRESHOLD,
.down_threshold = DEF_FREQUENCY_DOWN_THRESHOLD,
.sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR,
};
static inline unsigned int get_cpu_idle_time(unsigned int cpu)
{
return kstat_cpu(cpu).cpustat.idle +
kstat_cpu(cpu).cpustat.iowait +
( !dbs_tuners_ins.ignore_nice ?
kstat_cpu(cpu).cpustat.nice :
0);
}
/************************** sysfs interface ************************/
static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
{
return sprintf (buf, "%u\n", MAX_SAMPLING_RATE);
}
static ssize_t show_sampling_rate_min(struct cpufreq_policy *policy, char *buf)
{
return sprintf (buf, "%u\n", MIN_SAMPLING_RATE);
}
#define define_one_ro(_name) \
static struct freq_attr _name = \
__ATTR(_name, 0444, show_##_name, NULL)
define_one_ro(sampling_rate_max);
define_one_ro(sampling_rate_min);
/* cpufreq_conservative Governor Tunables */
#define show_one(file_name, object) \
static ssize_t show_##file_name \
(struct cpufreq_policy *unused, char *buf) \
{ \
return sprintf(buf, "%u\n", dbs_tuners_ins.object); \
}
show_one(sampling_rate, sampling_rate);
show_one(sampling_down_factor, sampling_down_factor);
show_one(up_threshold, up_threshold);
show_one(down_threshold, down_threshold);
show_one(ignore_nice, ignore_nice);
show_one(freq_step, freq_step);
static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused,
const char *buf, size_t count)
{
unsigned int input;
int ret;
ret = sscanf (buf, "%u", &input);
if (ret != 1 )
return -EINVAL;
down(&dbs_sem);
dbs_tuners_ins.sampling_down_factor = input;
up(&dbs_sem);
return count;
}
static ssize_t store_sampling_rate(struct cpufreq_policy *unused,
const char *buf, size_t count)
{
unsigned int input;
int ret;
ret = sscanf (buf, "%u", &input);
down(&dbs_sem);
if (ret != 1 || input > MAX_SAMPLING_RATE || input < MIN_SAMPLING_RATE) {
up(&dbs_sem);
return -EINVAL;
}
dbs_tuners_ins.sampling_rate = input;
up(&dbs_sem);
return count;
}
static ssize_t store_up_threshold(struct cpufreq_policy *unused,
const char *buf, size_t count)
{
unsigned int input;
int ret;
ret = sscanf (buf, "%u", &input);
down(&dbs_sem);
if (ret != 1 || input > MAX_FREQUENCY_UP_THRESHOLD ||
input < MIN_FREQUENCY_UP_THRESHOLD ||
input <= dbs_tuners_ins.down_threshold) {
up(&dbs_sem);
return -EINVAL;
}
dbs_tuners_ins.up_threshold = input;
up(&dbs_sem);
return count;
}
static ssize_t store_down_threshold(struct cpufreq_policy *unused,
const char *buf, size_t count)
{
unsigned int input;
int ret;
ret = sscanf (buf, "%u", &input);
down(&dbs_sem);
if (ret != 1 || input > MAX_FREQUENCY_DOWN_THRESHOLD ||
input < MIN_FREQUENCY_DOWN_THRESHOLD ||
input >= dbs_tuners_ins.up_threshold) {
up(&dbs_sem);
return -EINVAL;
}
dbs_tuners_ins.down_threshold = input;
up(&dbs_sem);
return count;
}
static ssize_t store_ignore_nice(struct cpufreq_policy *policy,
const char *buf, size_t count)
{
unsigned int input;
int ret;
unsigned int j;
ret = sscanf (buf, "%u", &input);
if ( ret != 1 )
return -EINVAL;
if ( input > 1 )
input = 1;
down(&dbs_sem);
if ( input == dbs_tuners_ins.ignore_nice ) { /* nothing to do */
up(&dbs_sem);
return count;
}
dbs_tuners_ins.ignore_nice = input;
/* we need to re-evaluate prev_cpu_idle_up and prev_cpu_idle_down */
for_each_online_cpu(j) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
j_dbs_info->prev_cpu_idle_down = j_dbs_info->prev_cpu_idle_up;
}
up(&dbs_sem);
return count;
}
static ssize_t store_freq_step(struct cpufreq_policy *policy,
const char *buf, size_t count)
{
unsigned int input;
int ret;
ret = sscanf (buf, "%u", &input);
if ( ret != 1 )
return -EINVAL;
if ( input > 100 )
input = 100;
/* no need to test here if freq_step is zero as the user might actually
* want this, they would be crazy though :) */
down(&dbs_sem);
dbs_tuners_ins.freq_step = input;
up(&dbs_sem);
return count;
}
#define define_one_rw(_name) \
static struct freq_attr _name = \
__ATTR(_name, 0644, show_##_name, store_##_name)
define_one_rw(sampling_rate);
define_one_rw(sampling_down_factor);
define_one_rw(up_threshold);
define_one_rw(down_threshold);
define_one_rw(ignore_nice);
define_one_rw(freq_step);
static struct attribute * dbs_attributes[] = {
&sampling_rate_max.attr,
&sampling_rate_min.attr,
&sampling_rate.attr,
&sampling_down_factor.attr,
&up_threshold.attr,
&down_threshold.attr,
&ignore_nice.attr,
&freq_step.attr,
NULL
};
static struct attribute_group dbs_attr_group = {
.attrs = dbs_attributes,
.name = "conservative",
};
/************************** sysfs end ************************/
static void dbs_check_cpu(int cpu)
{
unsigned int idle_ticks, up_idle_ticks, down_idle_ticks;
unsigned int freq_step;
unsigned int freq_down_sampling_rate;
static int down_skip[NR_CPUS];
static int requested_freq[NR_CPUS];
static unsigned short init_flag = 0;
struct cpu_dbs_info_s *this_dbs_info;
struct cpu_dbs_info_s *dbs_info;
struct cpufreq_policy *policy;
unsigned int j;
this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
if (!this_dbs_info->enable)
return;
policy = this_dbs_info->cur_policy;
if ( init_flag == 0 ) {
for ( /* NULL */; init_flag < NR_CPUS; init_flag++ ) {
dbs_info = &per_cpu(cpu_dbs_info, init_flag);
requested_freq[cpu] = dbs_info->cur_policy->cur;
}
init_flag = 1;
}
/*
* The default safe range is 20% to 80%
* Every sampling_rate, we check
* - If current idle time is less than 20%, then we try to
* increase frequency
* Every sampling_rate*sampling_down_factor, we check
* - If current idle time is more than 80%, then we try to
* decrease frequency
*
* Any frequency increase takes it to the maximum frequency.
* Frequency reduction happens at minimum steps of
* 5% (default) of max_frequency
*/
/* Check for frequency increase */
idle_ticks = UINT_MAX;
for_each_cpu_mask(j, policy->cpus) {
unsigned int tmp_idle_ticks, total_idle_ticks;
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
/* Check for frequency increase */
total_idle_ticks = get_cpu_idle_time(j);
tmp_idle_ticks = total_idle_ticks -
j_dbs_info->prev_cpu_idle_up;
j_dbs_info->prev_cpu_idle_up = total_idle_ticks;
if (tmp_idle_ticks < idle_ticks)
idle_ticks = tmp_idle_ticks;
}
/* Scale idle ticks by 100 and compare with up and down ticks */
idle_ticks *= 100;
up_idle_ticks = (100 - dbs_tuners_ins.up_threshold) *
usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
if (idle_ticks < up_idle_ticks) {
down_skip[cpu] = 0;
for_each_cpu_mask(j, policy->cpus) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
j_dbs_info->prev_cpu_idle_down =
j_dbs_info->prev_cpu_idle_up;
}
/* if we are already at full speed then break out early */
if (requested_freq[cpu] == policy->max)
return;
freq_step = (dbs_tuners_ins.freq_step * policy->max) / 100;
/* max freq cannot be less than 100. But who knows.... */
if (unlikely(freq_step == 0))
freq_step = 5;
requested_freq[cpu] += freq_step;
if (requested_freq[cpu] > policy->max)
requested_freq[cpu] = policy->max;
__cpufreq_driver_target(policy, requested_freq[cpu],
CPUFREQ_RELATION_H);
return;
}
/* Check for frequency decrease */
down_skip[cpu]++;
if (down_skip[cpu] < dbs_tuners_ins.sampling_down_factor)
return;
idle_ticks = UINT_MAX;
for_each_cpu_mask(j, policy->cpus) {
unsigned int tmp_idle_ticks, total_idle_ticks;
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
total_idle_ticks = j_dbs_info->prev_cpu_idle_up;
tmp_idle_ticks = total_idle_ticks -
j_dbs_info->prev_cpu_idle_down;
j_dbs_info->prev_cpu_idle_down = total_idle_ticks;
if (tmp_idle_ticks < idle_ticks)
idle_ticks = tmp_idle_ticks;
}
/* Scale idle ticks by 100 and compare with up and down ticks */
idle_ticks *= 100;
down_skip[cpu] = 0;
freq_down_sampling_rate = dbs_tuners_ins.sampling_rate *
dbs_tuners_ins.sampling_down_factor;
down_idle_ticks = (100 - dbs_tuners_ins.down_threshold) *
usecs_to_jiffies(freq_down_sampling_rate);
if (idle_ticks > down_idle_ticks) {
/* if we are already at the lowest speed then break out early
* or if we 'cannot' reduce the speed as the user might want
* freq_step to be zero */
if (requested_freq[cpu] == policy->min
|| dbs_tuners_ins.freq_step == 0)
return;
freq_step = (dbs_tuners_ins.freq_step * policy->max) / 100;
/* max freq cannot be less than 100. But who knows.... */
if (unlikely(freq_step == 0))
freq_step = 5;
requested_freq[cpu] -= freq_step;
if (requested_freq[cpu] < policy->min)
requested_freq[cpu] = policy->min;
__cpufreq_driver_target(policy,
requested_freq[cpu],
CPUFREQ_RELATION_H);
return;
}
}
static void do_dbs_timer(void *data)
{
int i;
down(&dbs_sem);
for_each_online_cpu(i)
dbs_check_cpu(i);
schedule_delayed_work(&dbs_work,
usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
up(&dbs_sem);
}
static inline void dbs_timer_init(void)
{
INIT_WORK(&dbs_work, do_dbs_timer, NULL);
schedule_delayed_work(&dbs_work,
usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
return;
}
static inline void dbs_timer_exit(void)
{
cancel_delayed_work(&dbs_work);
return;
}
static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
unsigned int event)
{
unsigned int cpu = policy->cpu;
struct cpu_dbs_info_s *this_dbs_info;
unsigned int j;
this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
switch (event) {
case CPUFREQ_GOV_START:
if ((!cpu_online(cpu)) ||
(!policy->cur))
return -EINVAL;
if (policy->cpuinfo.transition_latency >
(TRANSITION_LATENCY_LIMIT * 1000))
return -EINVAL;
if (this_dbs_info->enable) /* Already enabled */
break;
down(&dbs_sem);
for_each_cpu_mask(j, policy->cpus) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
j_dbs_info->cur_policy = policy;
j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
j_dbs_info->prev_cpu_idle_down
= j_dbs_info->prev_cpu_idle_up;
}
this_dbs_info->enable = 1;
sysfs_create_group(&policy->kobj, &dbs_attr_group);
dbs_enable++;
/*
* Start the timerschedule work, when this governor
* is used for first time
*/
if (dbs_enable == 1) {
unsigned int latency;
/* policy latency is in nS. Convert it to uS first */
latency = policy->cpuinfo.transition_latency;
if (latency < 1000)
latency = 1000;
def_sampling_rate = (latency / 1000) *
DEF_SAMPLING_RATE_LATENCY_MULTIPLIER;
dbs_tuners_ins.sampling_rate = def_sampling_rate;
dbs_tuners_ins.ignore_nice = 0;
dbs_tuners_ins.freq_step = 5;
dbs_timer_init();
}
up(&dbs_sem);
break;
case CPUFREQ_GOV_STOP:
down(&dbs_sem);
this_dbs_info->enable = 0;
sysfs_remove_group(&policy->kobj, &dbs_attr_group);
dbs_enable--;
/*
* Stop the timerschedule work, when this governor
* is used for first time
*/
if (dbs_enable == 0)
dbs_timer_exit();
up(&dbs_sem);
break;
case CPUFREQ_GOV_LIMITS:
down(&dbs_sem);
if (policy->max < this_dbs_info->cur_policy->cur)
__cpufreq_driver_target(
this_dbs_info->cur_policy,
policy->max, CPUFREQ_RELATION_H);
else if (policy->min > this_dbs_info->cur_policy->cur)
__cpufreq_driver_target(
this_dbs_info->cur_policy,
policy->min, CPUFREQ_RELATION_L);
up(&dbs_sem);
break;
}
return 0;
}
static struct cpufreq_governor cpufreq_gov_dbs = {
.name = "conservative",
.governor = cpufreq_governor_dbs,
.owner = THIS_MODULE,
};
static int __init cpufreq_gov_dbs_init(void)
{
return cpufreq_register_governor(&cpufreq_gov_dbs);
}
static void __exit cpufreq_gov_dbs_exit(void)
{
/* Make sure that the scheduled work is indeed not running */
flush_scheduled_work();
cpufreq_unregister_governor(&cpufreq_gov_dbs);
}
MODULE_AUTHOR ("Alexander Clouter <alex-kernel@digriz.org.uk>");
MODULE_DESCRIPTION ("'cpufreq_conservative' - A dynamic cpufreq governor for "
"Low Latency Frequency Transition capable processors "
"optimised for use in a battery environment");
MODULE_LICENSE ("GPL");
module_init(cpufreq_gov_dbs_init);
module_exit(cpufreq_gov_dbs_exit);

186
drivers/cpufreq/cpufreq_ondemand.c
View File

@ -34,13 +34,9 @@
*/
#define DEF_FREQUENCY_UP_THRESHOLD (80)
#define MIN_FREQUENCY_UP_THRESHOLD (0)
#define MIN_FREQUENCY_UP_THRESHOLD (11)
#define MAX_FREQUENCY_UP_THRESHOLD (100)
#define DEF_FREQUENCY_DOWN_THRESHOLD (20)
#define MIN_FREQUENCY_DOWN_THRESHOLD (0)
#define MAX_FREQUENCY_DOWN_THRESHOLD (100)
/*
* The polling frequency of this governor depends on the capability of
* the processor. Default polling frequency is 1000 times the transition
@ -55,9 +51,9 @@ static unsigned int def_sampling_rate;
#define MIN_SAMPLING_RATE (def_sampling_rate / 2)
#define MAX_SAMPLING_RATE (500 * def_sampling_rate)
#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (1000)
#define DEF_SAMPLING_DOWN_FACTOR (10)
#define DEF_SAMPLING_DOWN_FACTOR (1)
#define MAX_SAMPLING_DOWN_FACTOR (10)
#define TRANSITION_LATENCY_LIMIT (10 * 1000)
#define sampling_rate_in_HZ(x) (((x * HZ) < (1000 * 1000))?1:((x * HZ) / (1000 * 1000)))
static void do_dbs_timer(void *data);
@ -78,15 +74,23 @@ struct dbs_tuners {
unsigned int sampling_rate;
unsigned int sampling_down_factor;
unsigned int up_threshold;
unsigned int down_threshold;
unsigned int ignore_nice;
};
static struct dbs_tuners dbs_tuners_ins = {
.up_threshold = DEF_FREQUENCY_UP_THRESHOLD,
.down_threshold = DEF_FREQUENCY_DOWN_THRESHOLD,
.sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR,
};
static inline unsigned int get_cpu_idle_time(unsigned int cpu)
{
return kstat_cpu(cpu).cpustat.idle +
kstat_cpu(cpu).cpustat.iowait +
( !dbs_tuners_ins.ignore_nice ?
kstat_cpu(cpu).cpustat.nice :
0);
}
/************************** sysfs interface ************************/
static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
{
@ -115,7 +119,7 @@ static ssize_t show_##file_name \
show_one(sampling_rate, sampling_rate);
show_one(sampling_down_factor, sampling_down_factor);
show_one(up_threshold, up_threshold);
show_one(down_threshold, down_threshold);
show_one(ignore_nice, ignore_nice);
static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused,
const char *buf, size_t count)
@ -126,6 +130,9 @@ static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused,
if (ret != 1 )
return -EINVAL;
if (input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
return -EINVAL;
down(&dbs_sem);
dbs_tuners_ins.sampling_down_factor = input;
up(&dbs_sem);
@ -161,8 +168,7 @@ static ssize_t store_up_threshold(struct cpufreq_policy *unused,
down(&dbs_sem);
if (ret != 1 || input > MAX_FREQUENCY_UP_THRESHOLD ||
input < MIN_FREQUENCY_UP_THRESHOLD ||
input <= dbs_tuners_ins.down_threshold) {
input < MIN_FREQUENCY_UP_THRESHOLD) {
up(&dbs_sem);
return -EINVAL;
}
@ -173,22 +179,35 @@ static ssize_t store_up_threshold(struct cpufreq_policy *unused,
return count;
}
static ssize_t store_down_threshold(struct cpufreq_policy *unused,
static ssize_t store_ignore_nice(struct cpufreq_policy *policy,
const char *buf, size_t count)
{
unsigned int input;
int ret;
unsigned int j;
ret = sscanf (buf, "%u", &input);
down(&dbs_sem);
if (ret != 1 || input > MAX_FREQUENCY_DOWN_THRESHOLD ||
input < MIN_FREQUENCY_DOWN_THRESHOLD ||
input >= dbs_tuners_ins.up_threshold) {
up(&dbs_sem);
if ( ret != 1 )
return -EINVAL;
}
dbs_tuners_ins.down_threshold = input;
if ( input > 1 )
input = 1;
down(&dbs_sem);
if ( input == dbs_tuners_ins.ignore_nice ) { /* nothing to do */
up(&dbs_sem);
return count;
}
dbs_tuners_ins.ignore_nice = input;
/* we need to re-evaluate prev_cpu_idle_up and prev_cpu_idle_down */
for_each_online_cpu(j) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
j_dbs_info->prev_cpu_idle_down = j_dbs_info->prev_cpu_idle_up;
}
up(&dbs_sem);
return count;
@ -201,7 +220,7 @@ __ATTR(_name, 0644, show_##_name, store_##_name)
define_one_rw(sampling_rate);
define_one_rw(sampling_down_factor);
define_one_rw(up_threshold);
define_one_rw(down_threshold);
define_one_rw(ignore_nice);
static struct attribute * dbs_attributes[] = {
&sampling_rate_max.attr,
@ -209,7 +228,7 @@ static struct attribute * dbs_attributes[] = {
&sampling_rate.attr,
&sampling_down_factor.attr,
&up_threshold.attr,
&down_threshold.attr,
&ignore_nice.attr,
NULL
};
@ -222,9 +241,8 @@ static struct attribute_group dbs_attr_group = {
static void dbs_check_cpu(int cpu)
{
unsigned int idle_ticks, up_idle_ticks, down_idle_ticks;
unsigned int total_idle_ticks;
unsigned int freq_down_step;
unsigned int idle_ticks, up_idle_ticks, total_ticks;
unsigned int freq_next;
unsigned int freq_down_sampling_rate;
static int down_skip[NR_CPUS];
struct cpu_dbs_info_s *this_dbs_info;
@ -238,38 +256,25 @@ static void dbs_check_cpu(int cpu)
policy = this_dbs_info->cur_policy;
/*
* The default safe range is 20% to 80%
* Every sampling_rate, we check
* - If current idle time is less than 20%, then we try to
* increase frequency
* Every sampling_rate*sampling_down_factor, we check
* - If current idle time is more than 80%, then we try to
* decrease frequency
* Every sampling_rate, we check, if current idle time is less
* than 20% (default), then we try to increase frequency
* Every sampling_rate*sampling_down_factor, we look for a the lowest
* frequency which can sustain the load while keeping idle time over
* 30%. If such a frequency exist, we try to decrease to this frequency.
*
* Any frequency increase takes it to the maximum frequency.
* Frequency reduction happens at minimum steps of
* 5% of max_frequency
* 5% (default) of current frequency
*/
/* Check for frequency increase */
total_idle_ticks = kstat_cpu(cpu).cpustat.idle +
kstat_cpu(cpu).cpustat.iowait;
idle_ticks = total_idle_ticks -
this_dbs_info->prev_cpu_idle_up;
this_dbs_info->prev_cpu_idle_up = total_idle_ticks;
idle_ticks = UINT_MAX;
for_each_cpu_mask(j, policy->cpus) {
unsigned int tmp_idle_ticks;
unsigned int tmp_idle_ticks, total_idle_ticks;
struct cpu_dbs_info_s *j_dbs_info;
if (j == cpu)
continue;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
/* Check for frequency increase */
total_idle_ticks = kstat_cpu(j).cpustat.idle +
kstat_cpu(j).cpustat.iowait;
total_idle_ticks = get_cpu_idle_time(j);
tmp_idle_ticks = total_idle_ticks -
j_dbs_info->prev_cpu_idle_up;
j_dbs_info->prev_cpu_idle_up = total_idle_ticks;
@ -281,13 +286,23 @@ static void dbs_check_cpu(int cpu)
/* Scale idle ticks by 100 and compare with up and down ticks */
idle_ticks *= 100;
up_idle_ticks = (100 - dbs_tuners_ins.up_threshold) *
sampling_rate_in_HZ(dbs_tuners_ins.sampling_rate);
usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
if (idle_ticks < up_idle_ticks) {
down_skip[cpu] = 0;
for_each_cpu_mask(j, policy->cpus) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
j_dbs_info->prev_cpu_idle_down =
j_dbs_info->prev_cpu_idle_up;
}
/* if we are already at full speed then break out early */
if (policy->cur == policy->max)
return;
__cpufreq_driver_target(policy, policy->max,
CPUFREQ_RELATION_H);
down_skip[cpu] = 0;
this_dbs_info->prev_cpu_idle_down = total_idle_ticks;
return;
}
@ -296,23 +311,14 @@ static void dbs_check_cpu(int cpu)
if (down_skip[cpu] < dbs_tuners_ins.sampling_down_factor)
return;
total_idle_ticks = kstat_cpu(cpu).cpustat.idle +
kstat_cpu(cpu).cpustat.iowait;
idle_ticks = total_idle_ticks -
this_dbs_info->prev_cpu_idle_down;
this_dbs_info->prev_cpu_idle_down = total_idle_ticks;
idle_ticks = UINT_MAX;
for_each_cpu_mask(j, policy->cpus) {
unsigned int tmp_idle_ticks;
unsigned int tmp_idle_ticks, total_idle_ticks;
struct cpu_dbs_info_s *j_dbs_info;
if (j == cpu)
continue;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
/* Check for frequency increase */
total_idle_ticks = kstat_cpu(j).cpustat.idle +
kstat_cpu(j).cpustat.iowait;
/* Check for frequency decrease */
total_idle_ticks = j_dbs_info->prev_cpu_idle_up;
tmp_idle_ticks = total_idle_ticks -
j_dbs_info->prev_cpu_idle_down;
j_dbs_info->prev_cpu_idle_down = total_idle_ticks;
@ -321,38 +327,37 @@ static void dbs_check_cpu(int cpu)
idle_ticks = tmp_idle_ticks;
}
/* Scale idle ticks by 100 and compare with up and down ticks */
idle_ticks *= 100;
down_skip[cpu] = 0;
/* if we cannot reduce the frequency anymore, break out early */
if (policy->cur == policy->min)
return;
/* Compute how many ticks there are between two measurements */
freq_down_sampling_rate = dbs_tuners_ins.sampling_rate *
dbs_tuners_ins.sampling_down_factor;
down_idle_ticks = (100 - dbs_tuners_ins.down_threshold) *
sampling_rate_in_HZ(freq_down_sampling_rate);
total_ticks = usecs_to_jiffies(freq_down_sampling_rate);
if (idle_ticks > down_idle_ticks ) {
freq_down_step = (5 * policy->max) / 100;
/*
* The optimal frequency is the frequency that is the lowest that
* can support the current CPU usage without triggering the up
* policy. To be safe, we focus 10 points under the threshold.
*/
freq_next = ((total_ticks - idle_ticks) * 100) / total_ticks;
freq_next = (freq_next * policy->cur) /
(dbs_tuners_ins.up_threshold - 10);
/* max freq cannot be less than 100. But who knows.... */
if (unlikely(freq_down_step == 0))
freq_down_step = 5;
__cpufreq_driver_target(policy,
policy->cur - freq_down_step,
CPUFREQ_RELATION_H);
return;
}
if (freq_next <= ((policy->cur * 95) / 100))
__cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L);
}
static void do_dbs_timer(void *data)
{
int i;
down(&dbs_sem);
for (i = 0; i < NR_CPUS; i++)
if (cpu_online(i))
dbs_check_cpu(i);
for_each_online_cpu(i)
dbs_check_cpu(i);
schedule_delayed_work(&dbs_work,
sampling_rate_in_HZ(dbs_tuners_ins.sampling_rate));
usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
up(&dbs_sem);
}
@ -360,7 +365,7 @@ static inline void dbs_timer_init(void)
{
INIT_WORK(&dbs_work, do_dbs_timer, NULL);
schedule_delayed_work(&dbs_work,
sampling_rate_in_HZ(dbs_tuners_ins.sampling_rate));
usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
return;
}
@ -397,12 +402,9 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
j_dbs_info = &per_cpu(cpu_dbs_info, j);
j_dbs_info->cur_policy = policy;
j_dbs_info->prev_cpu_idle_up =
kstat_cpu(j).cpustat.idle +
kstat_cpu(j).cpustat.iowait;
j_dbs_info->prev_cpu_idle_down =
kstat_cpu(j).cpustat.idle +
kstat_cpu(j).cpustat.iowait;
j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
j_dbs_info->prev_cpu_idle_down
= j_dbs_info->prev_cpu_idle_up;
}
this_dbs_info->enable = 1;
sysfs_create_group(&policy->kobj, &dbs_attr_group);
@ -422,6 +424,7 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
def_sampling_rate = (latency / 1000) *
DEF_SAMPLING_RATE_LATENCY_MULTIPLIER;
dbs_tuners_ins.sampling_rate = def_sampling_rate;
dbs_tuners_ins.ignore_nice = 0;
dbs_timer_init();
}
@ -461,12 +464,11 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
return 0;
}
struct cpufreq_governor cpufreq_gov_dbs = {
static struct cpufreq_governor cpufreq_gov_dbs = {
.name = "ondemand",
.governor = cpufreq_governor_dbs,
.owner = THIS_MODULE,
};
EXPORT_SYMBOL(cpufreq_gov_dbs);
static int __init cpufreq_gov_dbs_init(void)
{

47
drivers/cpufreq/cpufreq_stats.c
View File

@ -19,6 +19,7 @@
#include <linux/percpu.h>
#include <linux/kobject.h>
#include <linux/spinlock.h>
#include <asm/cputime.h>
static spinlock_t cpufreq_stats_lock;
@ -29,20 +30,14 @@ static struct freq_attr _attr_##_name = {\
.show = _show,\
};
static unsigned long
delta_time(unsigned long old, unsigned long new)
{
return (old > new) ? (old - new): (new + ~old + 1);
}
struct cpufreq_stats {
unsigned int cpu;
unsigned int total_trans;
unsigned long long last_time;
unsigned long long last_time;
unsigned int max_state;
unsigned int state_num;
unsigned int last_index;
unsigned long long *time_in_state;
cputime64_t *time_in_state;
unsigned int *freq_table;
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
unsigned int *trans_table;
@ -60,12 +55,16 @@ static int
cpufreq_stats_update (unsigned int cpu)
{
struct cpufreq_stats *stat;
unsigned long long cur_time;
cur_time = get_jiffies_64();
spin_lock(&cpufreq_stats_lock);
stat = cpufreq_stats_table[cpu];
if (stat->time_in_state)
stat->time_in_state[stat->last_index] +=
delta_time(stat->last_time, jiffies);
stat->last_time = jiffies;
stat->time_in_state[stat->last_index] =
cputime64_add(stat->time_in_state[stat->last_index],
cputime_sub(cur_time, stat->last_time));
stat->last_time = cur_time;
spin_unlock(&cpufreq_stats_lock);
return 0;
}
@ -90,8 +89,8 @@ show_time_in_state(struct cpufreq_policy *policy, char *buf)
return 0;
cpufreq_stats_update(stat->cpu);
for (i = 0; i < stat->state_num; i++) {
len += sprintf(buf + len, "%u %llu\n",
stat->freq_table[i], stat->time_in_state[i]);
len += sprintf(buf + len, "%u %llu\n", stat->freq_table[i],
(unsigned long long)cputime64_to_clock_t(stat->time_in_state[i]));
}
return len;
}
@ -107,16 +106,30 @@ show_trans_table(struct cpufreq_policy *policy, char *buf)
if(!stat)
return 0;
cpufreq_stats_update(stat->cpu);
len += snprintf(buf + len, PAGE_SIZE - len, " From : To\n");
len += snprintf(buf + len, PAGE_SIZE - len, " : ");
for (i = 0; i < stat->state_num; i++) {
if (len >= PAGE_SIZE)
break;
len += snprintf(buf + len, PAGE_SIZE - len, "%9u:\t",
len += snprintf(buf + len, PAGE_SIZE - len, "%9u ",
stat->freq_table[i]);
}
if (len >= PAGE_SIZE)
return len;
len += snprintf(buf + len, PAGE_SIZE - len, "\n");
for (i = 0; i < stat->state_num; i++) {
if (len >= PAGE_SIZE)
break;
len += snprintf(buf + len, PAGE_SIZE - len, "%9u: ",
stat->freq_table[i]);
for (j = 0; j < stat->state_num; j++) {
if (len >= PAGE_SIZE)
break;
len += snprintf(buf + len, PAGE_SIZE - len, "%u\t",
len += snprintf(buf + len, PAGE_SIZE - len, "%9u ",
stat->trans_table[i*stat->max_state+j]);
}
len += snprintf(buf + len, PAGE_SIZE - len, "\n");
@ -197,7 +210,7 @@ cpufreq_stats_create_table (struct cpufreq_policy *policy,
count++;
}
alloc_size = count * sizeof(int) + count * sizeof(long long);
alloc_size = count * sizeof(int) + count * sizeof(cputime64_t);
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
alloc_size += count * count * sizeof(int);
@ -224,7 +237,7 @@ cpufreq_stats_create_table (struct cpufreq_policy *policy,
}
stat->state_num = j;
spin_lock(&cpufreq_stats_lock);
stat->last_time = jiffies;
stat->last_time = get_jiffies_64();
stat->last_index = freq_table_get_index(stat, policy->cur);
spin_unlock(&cpufreq_stats_lock);
cpufreq_cpu_put(data);

1
drivers/firmware/pcdp.c
View File

@ -11,6 +11,7 @@
* published by the Free Software Foundation.
*/
#include <linux/config.h>
#include <linux/acpi.h>
#include <linux/console.h>
#include <linux/efi.h>

46
drivers/i2c/busses/i2c-ali1563.c
View File

@ -2,6 +2,7 @@
* i2c-ali1563.c - i2c driver for the ALi 1563 Southbridge
*
* Copyright (C) 2004 Patrick Mochel
* 2005 Rudolf Marek <r.marek@sh.cvut.cz>
*
* The 1563 southbridge is deceptively similar to the 1533, with a
* few notable exceptions. One of those happens to be the fact they
@ -57,10 +58,11 @@
#define HST_CNTL2_BLOCK 0x05
#define HST_CNTL2_SIZEMASK 0x38
static unsigned short ali1563_smba;
static int ali1563_transaction(struct i2c_adapter * a)
static int ali1563_transaction(struct i2c_adapter * a, int size)
{
u32 data;
int timeout;
@ -73,7 +75,7 @@ static int ali1563_transaction(struct i2c_adapter * a)
data = inb_p(SMB_HST_STS);
if (data & HST_STS_BAD) {
dev_warn(&a->dev,"ali1563: Trying to reset busy device\n");
dev_err(&a->dev, "ali1563: Trying to reset busy device\n");
outb_p(data | HST_STS_BAD,SMB_HST_STS);
data = inb_p(SMB_HST_STS);
if (data & HST_STS_BAD)
@ -94,19 +96,31 @@ static int ali1563_transaction(struct i2c_adapter * a)
if (timeout && !(data & HST_STS_BAD))
return 0;
dev_warn(&a->dev, "SMBus Error: %s%s%s%s%s\n",
timeout ? "Timeout " : "",
data & HST_STS_FAIL ? "Transaction Failed " : "",
data & HST_STS_BUSERR ? "No response or Bus Collision " : "",
data & HST_STS_DEVERR ? "Device Error " : "",
!(data & HST_STS_DONE) ? "Transaction Never Finished " : "");
if (!(data & HST_STS_DONE))
if (!timeout) {
dev_err(&a->dev, "Timeout - Trying to KILL transaction!\n");
/* Issue 'kill' to host controller */
outb_p(HST_CNTL2_KILL,SMB_HST_CNTL2);
else
/* Issue timeout to reset all devices on bus */
data = inb_p(SMB_HST_STS);
}
/* device error - no response, ignore the autodetection case */
if ((data & HST_STS_DEVERR) && (size != HST_CNTL2_QUICK)) {
dev_err(&a->dev, "Device error!\n");
}
/* bus collision */
if (data & HST_STS_BUSERR) {
dev_err(&a->dev, "Bus collision!\n");
/* Issue timeout, hoping it helps */
outb_p(HST_CNTL1_TIMEOUT,SMB_HST_CNTL1);
}
if (data & HST_STS_FAIL) {
dev_err(&a->dev, "Cleaning fail after KILL!\n");
outb_p(0x0,SMB_HST_CNTL2);
}
return -1;
}
@ -149,7 +163,7 @@ static int ali1563_block_start(struct i2c_adapter * a)
if (timeout && !(data & HST_STS_BAD))
return 0;
dev_warn(&a->dev, "SMBus Error: %s%s%s%s%s\n",
dev_err(&a->dev, "SMBus Error: %s%s%s%s%s\n",
timeout ? "Timeout " : "",
data & HST_STS_FAIL ? "Transaction Failed " : "",
data & HST_STS_BUSERR ? "No response or Bus Collision " : "",
@ -242,13 +256,15 @@ static s32 ali1563_access(struct i2c_adapter * a, u16 addr,
}
outb_p(((addr & 0x7f) << 1) | (rw & 0x01), SMB_HST_ADD);
outb_p(inb_p(SMB_HST_CNTL2) | (size << 3), SMB_HST_CNTL2);
outb_p((inb_p(SMB_HST_CNTL2) & ~HST_CNTL2_SIZEMASK) | (size << 3), SMB_HST_CNTL2);
/* Write the command register */
switch(size) {
case HST_CNTL2_BYTE:
if (rw== I2C_SMBUS_WRITE)
outb_p(cmd, SMB_HST_CMD);
/* Beware it uses DAT0 register and not CMD! */
outb_p(cmd, SMB_HST_DAT0);
break;
case HST_CNTL2_BYTE_DATA:
outb_p(cmd, SMB_HST_CMD);
@ -268,7 +284,7 @@ static s32 ali1563_access(struct i2c_adapter * a, u16 addr,
goto Done;
}
if ((error = ali1563_transaction(a)))
if ((error = ali1563_transaction(a, size)))
goto Done;
if ((rw == I2C_SMBUS_WRITE) || (size == HST_CNTL2_QUICK))

3
drivers/ide/pci/amd74xx.c
View File

@ -72,6 +72,7 @@ static struct amd_ide_chip {
{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE, 0x50, AMD_UDMA_133 },
{ 0 }
};
@ -487,6 +488,7 @@ static ide_pci_device_t amd74xx_chipsets[] __devinitdata = {
/* 12 */ DECLARE_NV_DEV("NFORCE3-250-SATA2"),
/* 13 */ DECLARE_NV_DEV("NFORCE-CK804"),
/* 14 */ DECLARE_NV_DEV("NFORCE-MCP04"),
/* 15 */ DECLARE_NV_DEV("NFORCE-MCP51"),
};
static int __devinit amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)
@ -521,6 +523,7 @@ static struct pci_device_id amd74xx_pci_tbl[] = {
#endif
{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 15 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, amd74xx_pci_tbl);

308
drivers/pci/hotplug/cpci_hotplug_core.c
View File

@ -1,7 +1,7 @@
/*
* CompactPCI Hot Plug Driver
*
* Copyright (C) 2002 SOMA Networks, Inc.
* Copyright (C) 2002,2005 SOMA Networks, Inc.
* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2001 IBM Corp.
*
@ -45,10 +45,10 @@
#define dbg(format, arg...) \
do { \
if(cpci_debug) \
if (cpci_debug) \
printk (KERN_DEBUG "%s: " format "\n", \
MY_NAME , ## arg); \
} while(0)
} while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
@ -111,10 +111,8 @@ enable_slot(struct hotplug_slot *hotplug_slot)
dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
if(controller->ops->set_power) {
if (controller->ops->set_power)
retval = controller->ops->set_power(slot, 1);
}
return retval;
}
@ -126,37 +124,41 @@ disable_slot(struct hotplug_slot *hotplug_slot)
dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
down_write(&list_rwsem);
/* Unconfigure device */
dbg("%s - unconfiguring slot %s",
__FUNCTION__, slot->hotplug_slot->name);
if((retval = cpci_unconfigure_slot(slot))) {
if ((retval = cpci_unconfigure_slot(slot))) {
err("%s - could not unconfigure slot %s",
__FUNCTION__, slot->hotplug_slot->name);
return retval;
goto disable_error;
}
dbg("%s - finished unconfiguring slot %s",
__FUNCTION__, slot->hotplug_slot->name);
/* Clear EXT (by setting it) */
if(cpci_clear_ext(slot)) {
if (cpci_clear_ext(slot)) {
err("%s - could not clear EXT for slot %s",
__FUNCTION__, slot->hotplug_slot->name);
retval = -ENODEV;
goto disable_error;
}
cpci_led_on(slot);
if(controller->ops->set_power) {
retval = controller->ops->set_power(slot, 0);
}
if (controller->ops->set_power)
if ((retval = controller->ops->set_power(slot, 0)))
goto disable_error;
if(update_adapter_status(slot->hotplug_slot, 0)) {
if (update_adapter_status(slot->hotplug_slot, 0))
warn("failure to update adapter file");
}
if(slot->extracting) {
if (slot->extracting) {
slot->extracting = 0;
atomic_dec(&extracting);
}
disable_error:
up_write(&list_rwsem);
return retval;
}
@ -165,9 +167,8 @@ cpci_get_power_status(struct slot *slot)
{
u8 power = 1;
if(controller->ops->get_power) {
if (controller->ops->get_power)
power = controller->ops->get_power(slot);
}
return power;
}
@ -237,9 +238,8 @@ cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last)
int status = -ENOMEM;
int i;
if(!(controller && bus)) {
if (!(controller && bus))
return -ENODEV;
}
/*
* Create a structure for each slot, and register that slot
@ -316,32 +316,30 @@ int
cpci_hp_unregister_bus(struct pci_bus *bus)
{
struct slot *slot;
struct list_head *tmp;
struct list_head *next;
int status;
struct slot *tmp;
int status = 0;
down_write(&list_rwsem);
if(!slots) {
if (!slots) {
up_write(&list_rwsem);
return -1;
}
list_for_each_safe(tmp, next, &slot_list) {
slot = list_entry(tmp, struct slot, slot_list);
if(slot->bus == bus) {
dbg("deregistering slot %s", slot->hotplug_slot->name);
status = pci_hp_deregister(slot->hotplug_slot);
if(status) {
err("pci_hp_deregister failed with error %d",
status);
return status;
}
list_for_each_entry_safe(slot, tmp, &slot_list, slot_list) {
if (slot->bus == bus) {
list_del(&slot->slot_list);
slots--;
dbg("deregistering slot %s", slot->hotplug_slot->name);
status = pci_hp_deregister(slot->hotplug_slot);
if (status) {
err("pci_hp_deregister failed with error %d",
status);
break;
}
}
}
up_write(&list_rwsem);
return 0;
return status;
}
/* This is the interrupt mode interrupt handler */
@ -351,7 +349,7 @@ cpci_hp_intr(int irq, void *data, struct pt_regs *regs)
dbg("entered cpci_hp_intr");
/* Check to see if it was our interrupt */
if((controller->irq_flags & SA_SHIRQ) &&
if ((controller->irq_flags & SA_SHIRQ) &&
!controller->ops->check_irq(controller->dev_id)) {
dbg("exited cpci_hp_intr, not our interrupt");
return IRQ_NONE;
@ -373,38 +371,30 @@ cpci_hp_intr(int irq, void *data, struct pt_regs *regs)
* INS bits of the cold-inserted devices.
*/
static int
init_slots(void)
init_slots(int clear_ins)
{
struct slot *slot;
struct list_head *tmp;
struct pci_dev* dev;
dbg("%s - enter", __FUNCTION__);
down_read(&list_rwsem);
if(!slots) {
if (!slots) {
up_read(&list_rwsem);
return -1;
}
list_for_each(tmp, &slot_list) {
slot = list_entry(tmp, struct slot, slot_list);
list_for_each_entry(slot, &slot_list, slot_list) {
dbg("%s - looking at slot %s",
__FUNCTION__, slot->hotplug_slot->name);
if(cpci_check_and_clear_ins(slot)) {
if (clear_ins && cpci_check_and_clear_ins(slot))
dbg("%s - cleared INS for slot %s",
__FUNCTION__, slot->hotplug_slot->name);
dev = pci_find_slot(slot->bus->number, PCI_DEVFN(slot->number, 0));
if(dev) {
if(update_adapter_status(slot->hotplug_slot, 1)) {
warn("failure to update adapter file");
}
if(update_latch_status(slot->hotplug_slot, 1)) {
warn("failure to update latch file");
}
slot->dev = dev;
} else {
err("%s - no driver attached to device in slot %s",
__FUNCTION__, slot->hotplug_slot->name);
}
dev = pci_get_slot(slot->bus, PCI_DEVFN(slot->number, 0));
if (dev) {
if (update_adapter_status(slot->hotplug_slot, 1))
warn("failure to update adapter file");
if (update_latch_status(slot->hotplug_slot, 1))
warn("failure to update latch file");
slot->dev = dev;
}
}
up_read(&list_rwsem);
@ -416,26 +406,28 @@ static int
check_slots(void)
{
struct slot *slot;
struct list_head *tmp;
int extracted;
int inserted;
u16 hs_csr;
down_read(&list_rwsem);
if(!slots) {
if (!slots) {
up_read(&list_rwsem);
err("no slots registered, shutting down");
return -1;
}
extracted = inserted = 0;
list_for_each(tmp, &slot_list) {
slot = list_entry(tmp, struct slot, slot_list);
list_for_each_entry(slot, &slot_list, slot_list) {
dbg("%s - looking at slot %s",
__FUNCTION__, slot->hotplug_slot->name);
if(cpci_check_and_clear_ins(slot)) {
/* Some broken hardware (e.g. PLX 9054AB) asserts ENUM# twice... */
if(slot->dev) {
warn("slot %s already inserted", slot->hotplug_slot->name);
if (cpci_check_and_clear_ins(slot)) {
/*
* Some broken hardware (e.g. PLX 9054AB) asserts
* ENUM# twice...
*/
if (slot->dev) {
warn("slot %s already inserted",
slot->hotplug_slot->name);
inserted++;
continue;
}
@ -452,7 +444,7 @@ check_slots(void)
/* Configure device */
dbg("%s - configuring slot %s",
__FUNCTION__, slot->hotplug_slot->name);
if(cpci_configure_slot(slot)) {
if (cpci_configure_slot(slot)) {
err("%s - could not configure slot %s",
__FUNCTION__, slot->hotplug_slot->name);
continue;
@ -465,13 +457,11 @@ check_slots(void)
dbg("%s - slot %s HS_CSR (2) = %04x",
__FUNCTION__, slot->hotplug_slot->name, hs_csr);
if(update_latch_status(slot->hotplug_slot, 1)) {
if (update_latch_status(slot->hotplug_slot, 1))
warn("failure to update latch file");
}
if(update_adapter_status(slot->hotplug_slot, 1)) {
if (update_adapter_status(slot->hotplug_slot, 1))
warn("failure to update adapter file");
}
cpci_led_off(slot);
@ -481,7 +471,7 @@ check_slots(void)
__FUNCTION__, slot->hotplug_slot->name, hs_csr);
inserted++;
} else if(cpci_check_ext(slot)) {
} else if (cpci_check_ext(slot)) {
/* Process extraction request */
dbg("%s - slot %s extracted",
__FUNCTION__, slot->hotplug_slot->name);
@ -491,27 +481,25 @@ check_slots(void)
dbg("%s - slot %s HS_CSR = %04x",
__FUNCTION__, slot->hotplug_slot->name, hs_csr);
if(!slot->extracting) {
if(update_latch_status(slot->hotplug_slot, 0)) {
if (!slot->extracting) {
if (update_latch_status(slot->hotplug_slot, 0)) {
warn("failure to update latch file");
}
atomic_inc(&extracting);
slot->extracting = 1;
atomic_inc(&extracting);
}
extracted++;
} else if(slot->extracting) {
} else if (slot->extracting) {
hs_csr = cpci_get_hs_csr(slot);
if(hs_csr == 0xffff) {
if (hs_csr == 0xffff) {
/*
* Hmmm, we're likely hosed at this point, should we
* bother trying to tell the driver or not?
*/
err("card in slot %s was improperly removed",
slot->hotplug_slot->name);
if(update_adapter_status(slot->hotplug_slot, 0)) {
if (update_adapter_status(slot->hotplug_slot, 0))
warn("failure to update adapter file");
}
slot->extracting = 0;
atomic_dec(&extracting);
}
@ -520,10 +508,9 @@ check_slots(void)
up_read(&list_rwsem);
dbg("inserted=%d, extracted=%d, extracting=%d",
inserted, extracted, atomic_read(&extracting));
if(inserted || extracted) {
if (inserted || extracted)
return extracted;
}
else if(!atomic_read(&extracting)) {
else if (!atomic_read(&extracting)) {
err("cannot find ENUM# source, shutting down");
return -1;
}
@ -541,12 +528,12 @@ event_thread(void *data)
unlock_kernel();
dbg("%s - event thread started", __FUNCTION__);
while(1) {
while (1) {
dbg("event thread sleeping");
down_interruptible(&event_semaphore);
dbg("event thread woken, thread_finished = %d",
thread_finished);
if(thread_finished || signal_pending(current))
if (thread_finished || signal_pending(current))
break;
do {
rc = check_slots();
@ -558,7 +545,9 @@ event_thread(void *data)
thread_finished = 1;
break;
}
} while(atomic_read(&extracting) != 0);
} while (atomic_read(&extracting) && !thread_finished);
if (thread_finished)
break;
/* Re-enable ENUM# interrupt */
dbg("%s - re-enabling irq", __FUNCTION__);
@ -579,21 +568,21 @@ poll_thread(void *data)
daemonize("cpci_hp_polld");
unlock_kernel();
while(1) {
if(thread_finished || signal_pending(current))
while (1) {
if (thread_finished || signal_pending(current))
break;
if(controller->ops->query_enum()) {
if (controller->ops->query_enum()) {
do {
rc = check_slots();
if(rc > 0) {
if (rc > 0) {
/* Give userspace a chance to handle extraction */
msleep(500);
} else if(rc < 0) {
} else if (rc < 0) {
dbg("%s - error checking slots", __FUNCTION__);
thread_finished = 1;
break;
}
} while(atomic_read(&extracting) != 0);
} while (atomic_read(&extracting) && !thread_finished);
}
msleep(100);
}
@ -612,12 +601,11 @@ cpci_start_thread(void)
init_MUTEX_LOCKED(&thread_exit);
thread_finished = 0;
if(controller->irq) {
if (controller->irq)
pid = kernel_thread(event_thread, NULL, 0);
} else {
else
pid = kernel_thread(poll_thread, NULL, 0);
}
if(pid < 0) {
if (pid < 0) {
err("Can't start up our thread");
return -1;
}
@ -630,9 +618,8 @@ cpci_stop_thread(void)
{
thread_finished = 1;
dbg("thread finish command given");
if(controller->irq) {
if (controller->irq)
up(&event_semaphore);
}
dbg("wait for thread to exit");
down(&thread_exit);
}
@ -642,45 +629,67 @@ cpci_hp_register_controller(struct cpci_hp_controller *new_controller)
{
int status = 0;
if(!controller) {
controller = new_controller;
if(controller->irq) {
if(request_irq(controller->irq,
cpci_hp_intr,
controller->irq_flags,
MY_NAME, controller->dev_id)) {
err("Can't get irq %d for the hotplug cPCI controller", controller->irq);
status = -ENODEV;
}
dbg("%s - acquired controller irq %d", __FUNCTION__,
controller->irq);
if (controller)
return -1;
if (!(new_controller && new_controller->ops))
return -EINVAL;
if (new_controller->irq) {
if (!(new_controller->ops->enable_irq &&
new_controller->ops->disable_irq))
status = -EINVAL;
if (request_irq(new_controller->irq,
cpci_hp_intr,
new_controller->irq_flags,
MY_NAME,
new_controller->dev_id)) {
err("Can't get irq %d for the hotplug cPCI controller",
new_controller->irq);
status = -ENODEV;
}
} else {
err("cPCI hotplug controller already registered");
status = -1;
dbg("%s - acquired controller irq %d",
__FUNCTION__, new_controller->irq);
}
if (!status)
controller = new_controller;
return status;
}
static void
cleanup_slots(void)
{
struct slot *slot;
struct slot *tmp;
/*
* Unregister all of our slots with the pci_hotplug subsystem,
* and free up all memory that we had allocated.
*/
down_write(&list_rwsem);
if (!slots)
goto cleanup_null;
list_for_each_entry_safe(slot, tmp, &slot_list, slot_list) {
list_del(&slot->slot_list);
pci_hp_deregister(slot->hotplug_slot);
}
cleanup_null:
up_write(&list_rwsem);
return;
}
int
cpci_hp_unregister_controller(struct cpci_hp_controller *old_controller)
{
int status = 0;
if(controller) {
if(atomic_read(&extracting) != 0) {
return -EBUSY;
}
if(!thread_finished) {
if (controller) {
if (!thread_finished)
cpci_stop_thread();
}
if(controller->irq) {
if (controller->irq)
free_irq(controller->irq, controller->dev_id);
}
controller = NULL;
} else {
cleanup_slots();
} else
status = -ENODEV;
}
return status;
}
@ -691,32 +700,28 @@ cpci_hp_start(void)
int status;
dbg("%s - enter", __FUNCTION__);
if(!controller) {
if (!controller)
return -ENODEV;
}
down_read(&list_rwsem);
if(list_empty(&slot_list)) {
if (list_empty(&slot_list)) {
up_read(&list_rwsem);
return -ENODEV;
}
up_read(&list_rwsem);
if(first) {
status = init_slots();
if(status) {
return status;
}
status = init_slots(first);
if (first)
first = 0;
}
if (status)
return status;
status = cpci_start_thread();
if(status) {
if (status)
return status;
}
dbg("%s - thread started", __FUNCTION__);
if(controller->irq) {
if (controller->irq) {
/* Start enum interrupt processing */
dbg("%s - enabling irq", __FUNCTION__);
controller->ops->enable_irq();
@ -728,13 +733,9 @@ cpci_hp_start(void)
int
cpci_hp_stop(void)
{
if(!controller) {
if (!controller)
return -ENODEV;
}
if(atomic_read(&extracting) != 0) {
return -EBUSY;
}
if(controller->irq) {
if (controller->irq) {
/* Stop enum interrupt processing */
dbg("%s - disabling irq", __FUNCTION__);
controller->ops->disable_irq();
@ -743,34 +744,6 @@ cpci_hp_stop(void)
return 0;
}
static void __exit
cleanup_slots(void)
{
struct list_head *tmp;
struct slot *slot;
/*
* Unregister all of our slots with the pci_hotplug subsystem,
* and free up all memory that we had allocated.
*/
down_write(&list_rwsem);
if(!slots) {
goto null_cleanup;
}
list_for_each(tmp, &slot_list) {
slot = list_entry(tmp, struct slot, slot_list);
list_del(&slot->slot_list);
pci_hp_deregister(slot->hotplug_slot);
kfree(slot->hotplug_slot->info);
kfree(slot->hotplug_slot->name);
kfree(slot->hotplug_slot);
kfree(slot);
}
null_cleanup:
up_write(&list_rwsem);
return;
}
int __init
cpci_hotplug_init(int debug)
{
@ -784,7 +757,8 @@ cpci_hotplug_exit(void)
/*
* Clean everything up.
*/
cleanup_slots();
cpci_hp_stop();
cpci_hp_unregister_controller(controller);
}
EXPORT_SYMBOL_GPL(cpci_hp_register_controller);

144
drivers/pci/hotplug/cpci_hotplug_pci.c
View File

@ -1,7 +1,7 @@
/*
* CompactPCI Hot Plug Driver PCI functions
*
* Copyright (C) 2002 by SOMA Networks, Inc.
* Copyright (C) 2002,2005 by SOMA Networks, Inc.
*
* All rights reserved.
*
@ -38,10 +38,10 @@ extern int cpci_debug;
#define dbg(format, arg...) \
do { \
if(cpci_debug) \
if (cpci_debug) \
printk (KERN_DEBUG "%s: " format "\n", \
MY_NAME , ## arg); \
} while(0)
} while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
@ -57,16 +57,15 @@ u8 cpci_get_attention_status(struct slot* slot)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return 0;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return 0;
}
return hs_csr & 0x0008 ? 1 : 0;
}
@ -78,27 +77,22 @@ int cpci_set_attention_status(struct slot* slot, int status)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return 0;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return 0;
}
if(status) {
if (status)
hs_csr |= HS_CSR_LOO;
} else {
else
hs_csr &= ~HS_CSR_LOO;
}
if(pci_bus_write_config_word(slot->bus,
if (pci_bus_write_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
hs_csr)) {
hs_csr))
return 0;
}
return 1;
}
@ -110,16 +104,13 @@ u16 cpci_get_hs_csr(struct slot* slot)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return 0xFFFF;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return 0xFFFF;
}
return hs_csr;
}
@ -132,24 +123,22 @@ int cpci_check_and_clear_ins(struct slot* slot)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return 0;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return 0;
}
if(hs_csr & HS_CSR_INS) {
if (hs_csr & HS_CSR_INS) {
/* Clear INS (by setting it) */
if(pci_bus_write_config_word(slot->bus,
if (pci_bus_write_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
hs_csr)) {
hs_csr))
ins = 0;
}
ins = 1;
else
ins = 1;
}
return ins;
}
@ -163,18 +152,15 @@ int cpci_check_ext(struct slot* slot)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return 0;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return 0;
}
if(hs_csr & HS_CSR_EXT) {
if (hs_csr & HS_CSR_EXT)
ext = 1;
}
return ext;
}
@ -186,23 +172,20 @@ int cpci_clear_ext(struct slot* slot)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return -ENODEV;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return -ENODEV;
}
if(hs_csr & HS_CSR_EXT) {
if (hs_csr & HS_CSR_EXT) {
/* Clear EXT (by setting it) */
if(pci_bus_write_config_word(slot->bus,
if (pci_bus_write_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
hs_csr)) {
hs_csr))
return -ENODEV;
}
}
return 0;
}
@ -215,18 +198,16 @@ int cpci_led_on(struct slot* slot)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return -ENODEV;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return -ENODEV;
}
if((hs_csr & HS_CSR_LOO) != HS_CSR_LOO) {
if ((hs_csr & HS_CSR_LOO) != HS_CSR_LOO) {
hs_csr |= HS_CSR_LOO;
if(pci_bus_write_config_word(slot->bus,
if (pci_bus_write_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
hs_csr)) {
@ -246,18 +227,16 @@ int cpci_led_off(struct slot* slot)
hs_cap = pci_bus_find_capability(slot->bus,
slot->devfn,
PCI_CAP_ID_CHSWP);
if(!hs_cap) {
if (!hs_cap)
return -ENODEV;
}
if(pci_bus_read_config_word(slot->bus,
if (pci_bus_read_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
&hs_csr)) {
&hs_csr))
return -ENODEV;
}
if(hs_csr & HS_CSR_LOO) {
if (hs_csr & HS_CSR_LOO) {
hs_csr &= ~HS_CSR_LOO;
if(pci_bus_write_config_word(slot->bus,
if (pci_bus_write_config_word(slot->bus,
slot->devfn,
hs_cap + 2,
hs_csr)) {
@ -274,19 +253,6 @@ int cpci_led_off(struct slot* slot)
* Device configuration functions
*/
static void cpci_enable_device(struct pci_dev *dev)
{
struct pci_bus *bus;
pci_enable_device(dev);
if(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
bus = dev->subordinate;
list_for_each_entry(dev, &bus->devices, bus_list) {
cpci_enable_device(dev);
}
}
}
int cpci_configure_slot(struct slot* slot)
{
unsigned char busnr;
@ -294,14 +260,14 @@ int cpci_configure_slot(struct slot* slot)
dbg("%s - enter", __FUNCTION__);
if(slot->dev == NULL) {
if (slot->dev == NULL) {
dbg("pci_dev null, finding %02x:%02x:%x",
slot->bus->number, PCI_SLOT(slot->devfn), PCI_FUNC(slot->devfn));
slot->dev = pci_find_slot(slot->bus->number, slot->devfn);
slot->dev = pci_get_slot(slot->bus, slot->devfn);
}
/* Still NULL? Well then scan for it! */
if(slot->dev == NULL) {
if (slot->dev == NULL) {
int n;
dbg("pci_dev still null");
@ -311,10 +277,10 @@ int cpci_configure_slot(struct slot* slot)
*/
n = pci_scan_slot(slot->bus, slot->devfn);
dbg("%s: pci_scan_slot returned %d", __FUNCTION__, n);
if(n > 0)
if (n > 0)
pci_bus_add_devices(slot->bus);
slot->dev = pci_find_slot(slot->bus->number, slot->devfn);
if(slot->dev == NULL) {
slot->dev = pci_get_slot(slot->bus, slot->devfn);
if (slot->dev == NULL) {
err("Could not find PCI device for slot %02x", slot->number);
return 1;
}
@ -329,8 +295,6 @@ int cpci_configure_slot(struct slot* slot)
pci_bus_assign_resources(slot->dev->bus);
cpci_enable_device(slot->dev);
dbg("%s - exit", __FUNCTION__);
return 0;
}
@ -341,15 +305,15 @@ int cpci_unconfigure_slot(struct slot* slot)
struct pci_dev *dev;
dbg("%s - enter", __FUNCTION__);
if(!slot->dev) {
if (!slot->dev) {
err("No device for slot %02x\n", slot->number);
return -ENODEV;
}
for (i = 0; i < 8; i++) {
dev = pci_find_slot(slot->bus->number,
dev = pci_get_slot(slot->bus,
PCI_DEVFN(PCI_SLOT(slot->devfn), i));
if(dev) {
if (dev) {
pci_remove_bus_device(dev);
slot->dev = NULL;
}

4
drivers/pci/hotplug/shpchprm_acpi.c
View File

@ -1626,7 +1626,7 @@ int shpchprm_set_hpp(
pci_bus->number = func->bus;
devfn = PCI_DEVFN(func->device, func->function);
ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->bus);
ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->slot_bus);
if (ab) {
if (ab->_hpp) {
@ -1681,7 +1681,7 @@ void shpchprm_enable_card(
| PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
bcmd = bcommand = bcommand | PCI_BRIDGE_CTL_NO_ISA;
ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->bus);
ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->slot_bus);
if (ab) {
if (ab->_hpp) {
if (ab->_hpp->enable_perr) {

11
drivers/usb/host/Kconfig
View File

@ -124,3 +124,14 @@ config USB_SL811_HCD
To compile this driver as a module, choose M here: the
module will be called sl811-hcd.
config USB_SL811_CS
tristate "CF/PCMCIA support for SL811HS HCD"
depends on USB_SL811_HCD && PCMCIA
default N
help
Wraps a PCMCIA driver around the SL811HS HCD, supporting the RATOC
REX-CFU1U CF card (often used with PDAs). If unsure, say N.
To compile this driver as a module, choose M here: the
module will be called "sl811_cs".

1
drivers/usb/host/Makefile
View File

@ -7,4 +7,5 @@ obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
obj-$(CONFIG_ETRAX_ARCH_V10) += hc_crisv10.o

148
drivers/usb/host/sl811-hcd.c
View File

@ -2,8 +2,8 @@
* SL811HS HCD (Host Controller Driver) for USB.
*
* Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
* Copyright (C) 2004 David Brownell
*
* Copyright (C) 2004-2005 David Brownell
*
* Periodic scheduling is based on Roman's OHCI code
* Copyright (C) 1999 Roman Weissgaerber
*
@ -15,7 +15,7 @@
* For documentation, see the SL811HS spec and the "SL811HS Embedded Host"
* document (providing significant pieces missing from that spec); plus
* the SL811S spec if you want peripheral side info.
*/
*/
/*
* Status: Passed basic stress testing, works with hubs, mice, keyboards,
@ -67,7 +67,7 @@
MODULE_DESCRIPTION("SL811HS USB Host Controller Driver");
MODULE_LICENSE("GPL");
#define DRIVER_VERSION "15 Dec 2004"
#define DRIVER_VERSION "19 May 2005"
#ifndef DEBUG
@ -121,6 +121,10 @@ static void port_power(struct sl811 *sl811, int is_on)
/* reset as thoroughly as we can */
if (sl811->board && sl811->board->reset)
sl811->board->reset(hcd->self.controller);
else {
sl811_write(sl811, SL11H_CTLREG1, SL11H_CTL1MASK_SE0);
mdelay(20);
}
sl811_write(sl811, SL11H_IRQ_ENABLE, 0);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
@ -443,6 +447,7 @@ static void finish_request(
spin_lock(&urb->lock);
if (urb->status == -EINPROGRESS)
urb->status = status;
urb->hcpriv = NULL;
spin_unlock(&urb->lock);
spin_unlock(&sl811->lock);
@ -472,7 +477,7 @@ static void finish_request(
if (*prev)
*prev = ep->next;
sl811->load[i] -= ep->load;
}
}
ep->branch = PERIODIC_SIZE;
sl811->periodic_count--;
sl811_to_hcd(sl811)->self.bandwidth_allocated
@ -661,9 +666,9 @@ retry:
#ifdef QUIRK2
/* this may no longer be necessary ... */
if (irqstat == 0 && ret == IRQ_NONE) {
if (irqstat == 0) {
irqstat = checkdone(sl811);
if (irqstat /* && irq != ~0 */ )
if (irqstat)
sl811->stat_lost++;
}
#endif
@ -722,7 +727,8 @@ retry:
if (sl811->active_a) {
sl811_write(sl811, SL811_EP_A(SL11H_HOSTCTLREG), 0);
finish_request(sl811, sl811->active_a,
container_of(sl811->active_a->hep->urb_list.next,
container_of(sl811->active_a
->hep->urb_list.next,
struct urb, urb_list),
NULL, -ESHUTDOWN);
sl811->active_a = NULL;
@ -731,7 +737,8 @@ retry:
if (sl811->active_b) {
sl811_write(sl811, SL811_EP_B(SL11H_HOSTCTLREG), 0);
finish_request(sl811, sl811->active_b,
container_of(sl811->active_b->hep->urb_list.next,
container_of(sl811->active_b
->hep->urb_list.next,
struct urb, urb_list),
NULL, -ESHUTDOWN);
sl811->active_b = NULL;
@ -761,7 +768,7 @@ retry:
goto retry;
}
if (sl811->periodic_count == 0 && list_empty(&sl811->async))
if (sl811->periodic_count == 0 && list_empty(&sl811->async))
sofirq_off(sl811);
sl811_write(sl811, SL11H_IRQ_ENABLE, sl811->irq_enable);
@ -796,7 +803,7 @@ static int balance(struct sl811 *sl811, u16 period, u16 load)
}
if (j < PERIODIC_SIZE)
continue;
branch = i;
branch = i;
}
}
return branch;
@ -890,6 +897,7 @@ static int sl811h_urb_enqueue(
break;
}
ep->hep = hep;
hep->hcpriv = ep;
}
@ -961,15 +969,16 @@ fail:
static int sl811h_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
{
struct sl811 *sl811 = hcd_to_sl811(hcd);
struct usb_host_endpoint *hep = urb->hcpriv;
struct usb_host_endpoint *hep;
unsigned long flags;
struct sl811h_ep *ep;
int retval = 0;
if (!hep)
return -EINVAL;
spin_lock_irqsave(&sl811->lock, flags);
hep = urb->hcpriv;
if (!hep)
goto fail;
ep = hep->hcpriv;
if (ep) {
/* finish right away if this urb can't be active ...
@ -1017,6 +1026,7 @@ static int sl811h_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
VDBG("dequeue, urb %p active %s; wait4irq\n", urb,
(sl811->active_a == ep) ? "A" : "B");
} else
fail:
retval = -EINVAL;
spin_unlock_irqrestore(&sl811->lock, flags);
return retval;
@ -1576,6 +1586,9 @@ sl811h_start(struct usb_hcd *hcd)
if (sl811->board && sl811->board->power)
hub_set_power_budget(udev, sl811->board->power * 2);
/* enable power and interupts */
port_power(sl811, 1);
return 0;
}
@ -1618,7 +1631,7 @@ static struct hc_driver sl811h_hc_driver = {
/*-------------------------------------------------------------------------*/
static int __init_or_module
static int __devexit
sl811h_remove(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
@ -1631,21 +1644,20 @@ sl811h_remove(struct device *dev)
remove_debug_file(sl811);
usb_remove_hcd(hcd);
iounmap(sl811->data_reg);
/* some platforms may use IORESOURCE_IO */
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
release_mem_region(res->start, 1);
if (res)
iounmap(sl811->data_reg);
iounmap(sl811->addr_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, 1);
if (res)
iounmap(sl811->addr_reg);
usb_put_hcd(hcd);
return 0;
}
#define resource_len(r) (((r)->end - (r)->start) + 1)
static int __init
static int __devinit
sl811h_probe(struct device *dev)
{
struct usb_hcd *hcd;
@ -1656,7 +1668,7 @@ sl811h_probe(struct device *dev)
void __iomem *addr_reg;
void __iomem *data_reg;
int retval;
u8 tmp;
u8 tmp, ioaddr = 0;
/* basic sanity checks first. board-specific init logic should
* have initialized these three resources and probably board
@ -1664,13 +1676,8 @@ sl811h_probe(struct device *dev)
* minimal sanity checking.
*/
pdev = container_of(dev, struct platform_device, dev);
if (pdev->num_resources < 3)
return -ENODEV;
addr = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data = platform_get_resource(pdev, IORESOURCE_MEM, 1);
irq = platform_get_irq(pdev, 0);
if (!addr || !data || irq < 0)
if (pdev->num_resources < 3 || irq < 0)
return -ENODEV;
/* refuse to confuse usbcore */
@ -1679,24 +1686,31 @@ sl811h_probe(struct device *dev)
return -EINVAL;
}
if (!request_mem_region(addr->start, 1, hcd_name)) {
retval = -EBUSY;
goto err1;
}
addr_reg = ioremap(addr->start, resource_len(addr));
if (addr_reg == NULL) {
retval = -ENOMEM;
goto err2;
}
/* the chip may be wired for either kind of addressing */
addr = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data = platform_get_resource(pdev, IORESOURCE_MEM, 1);
retval = -EBUSY;
if (!addr || !data) {
addr = platform_get_resource(pdev, IORESOURCE_IO, 0);
data = platform_get_resource(pdev, IORESOURCE_IO, 1);
if (!addr || !data)
return -ENODEV;
ioaddr = 1;
if (!request_mem_region(data->start, 1, hcd_name)) {
retval = -EBUSY;
goto err3;
}
data_reg = ioremap(data->start, resource_len(addr));
if (data_reg == NULL) {
retval = -ENOMEM;
goto err4;
addr_reg = (void __iomem *) addr->start;
data_reg = (void __iomem *) data->start;
} else {
addr_reg = ioremap(addr->start, 1);
if (addr_reg == NULL) {
retval = -ENOMEM;
goto err2;
}
data_reg = ioremap(data->start, 1);
if (data_reg == NULL) {
retval = -ENOMEM;
goto err4;
}
}
/* allocate and initialize hcd */
@ -1737,12 +1751,14 @@ sl811h_probe(struct device *dev)
goto err6;
}
/* sl811s would need a different handler for this irq */
#ifdef CONFIG_ARM
/* Cypress docs say the IRQ is IRQT_HIGH ... */
set_irq_type(irq, IRQT_RISING);
#endif
retval = usb_add_hcd(hcd, irq, SA_INTERRUPT);
/* The chip's IRQ is level triggered, active high. A requirement
* for platform device setup is to cope with things like signal
* inverters (e.g. CF is active low) or working only with edge
* triggers (e.g. most ARM CPUs). Initial driver stress testing
* was on a system with single edge triggering, so most sorts of
* triggering arrangement should work.
*/
retval = usb_add_hcd(hcd, irq, SA_INTERRUPT | SA_SHIRQ);
if (retval != 0)
goto err6;
@ -1752,14 +1768,12 @@ sl811h_probe(struct device *dev)
err6:
usb_put_hcd(hcd);
err5:
iounmap(data_reg);
if (!ioaddr)
iounmap(data_reg);
err4:
release_mem_region(data->start, 1);
err3:
iounmap(addr_reg);
if (!ioaddr)
iounmap(addr_reg);
err2:
release_mem_region(addr->start, 1);
err1:
DBG("init error, %d\n", retval);
return retval;
}
@ -1767,7 +1781,7 @@ sl811h_probe(struct device *dev)
#ifdef CONFIG_PM
/* for this device there's no useful distinction between the controller
* and its root hub, except that the root hub only gets direct PM calls
* and its root hub, except that the root hub only gets direct PM calls
* when CONFIG_USB_SUSPEND is enabled.
*/
@ -1821,20 +1835,22 @@ sl811h_resume(struct device *dev, u32 phase)
#endif
static struct device_driver sl811h_driver = {
/* this driver is exported so sl811_cs can depend on it */
struct device_driver sl811h_driver = {
.name = (char *) hcd_name,
.bus = &platform_bus_type,
.probe = sl811h_probe,
.remove = sl811h_remove,
.remove = __devexit_p(sl811h_remove),
.suspend = sl811h_suspend,
.resume = sl811h_resume,
};
EXPORT_SYMBOL(sl811h_driver);
/*-------------------------------------------------------------------------*/
static int __init sl811h_init(void)
static int __init sl811h_init(void)
{
if (usb_disabled())
return -ENODEV;
@ -1844,8 +1860,8 @@ static int __init sl811h_init(void)
}
module_init(sl811h_init);
static void __exit sl811h_cleanup(void)
{
static void __exit sl811h_cleanup(void)
{
driver_unregister(&sl811h_driver);
}
module_exit(sl811h_cleanup);

442
drivers/usb/host/sl811_cs.c Normal file
View File

@ -0,0 +1,442 @@
/*
* PCMCIA driver for SL811HS (as found in REX-CFU1U)
* Filename: sl811_cs.c
* Author: Yukio Yamamoto
*
* Port to sl811-hcd and 2.6.x by
* Botond Botyanszki <boti@rocketmail.com>
* Simon Pickering
*
* Last update: 2005-05-12
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <pcmcia/version.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include <linux/usb_sl811.h>
MODULE_AUTHOR("Botond Botyanszki");
MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
MODULE_LICENSE("GPL");
/*====================================================================*/
/* MACROS */
/*====================================================================*/
#if defined(DEBUG) || defined(CONFIG_USB_DEBUG) || defined(PCMCIA_DEBUG)
static int pc_debug = 0;
module_param(pc_debug, int, 0644);
#define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args)
#else
#define DBG(n, args...) do{}while(0)
#endif /* no debugging */
#define INFO(args...) printk(KERN_INFO "sl811_cs: " args)
#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
#define CS_CHECK(fn, ret) \
do { \
last_fn = (fn); \
if ((last_ret = (ret)) != 0) \
goto cs_failed; \
} while (0)
/*====================================================================*/
/* VARIABLES */
/*====================================================================*/
static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
static dev_link_t *dev_list = NULL;
static int irq_list[4] = { -1 };
static int irq_list_count;
module_param_array(irq_list, int, &irq_list_count, 0444);
INT_MODULE_PARM(irq_mask, 0xdeb8);
typedef struct local_info_t {
dev_link_t link;
dev_node_t node;
} local_info_t;
/*====================================================================*/
static void release_platform_dev(struct device * dev)
{
DBG(0, "sl811_cs platform_dev release\n");
dev->parent = NULL;
}
static struct sl811_platform_data platform_data = {
.potpg = 100,
.power = 50, /* == 100mA */
// .reset = ... FIXME: invoke CF reset on the card
};
static struct resource resources[] = {
[0] = {
.flags = IORESOURCE_IRQ,
},
[1] = {
// .name = "address",
.flags = IORESOURCE_IO,
},
[2] = {
// .name = "data",
.flags = IORESOURCE_IO,
},
};
extern struct device_driver sl811h_driver;
static struct platform_device platform_dev = {
.id = -1,
.dev = {
.platform_data = &platform_data,
.release = release_platform_dev,
},
.resource = resources,
.num_resources = ARRAY_SIZE(resources),
};
static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
{
if (platform_dev.dev.parent)
return -EBUSY;
platform_dev.dev.parent = parent;
/* finish seting up the platform device */
resources[0].start = irq;
resources[1].start = base_addr;
resources[1].end = base_addr;
resources[2].start = base_addr + 1;
resources[2].end = base_addr + 1;
/* The driver core will probe for us. We know sl811-hcd has been
* initialized already because of the link order dependency.
*/
platform_dev.name = sl811h_driver.name;
return platform_device_register(&platform_dev);
}
/*====================================================================*/
static void sl811_cs_detach(dev_link_t *link)
{
dev_link_t **linkp;
DBG(0, "sl811_cs_detach(0x%p)\n", link);
/* Locate device structure */
for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) {
if (*linkp == link)
break;
}
if (*linkp == NULL)
return;
/* Break the link with Card Services */
if (link->handle)
pcmcia_deregister_client(link->handle);
/* Unlink device structure, and free it */
*linkp = link->next;
/* This points to the parent local_info_t struct */
kfree(link->priv);
}
static void sl811_cs_release(dev_link_t * link)
{
DBG(0, "sl811_cs_release(0x%p)\n", link);
if (link->open) {
DBG(1, "sl811_cs: release postponed, '%s' still open\n",
link->dev->dev_name);
link->state |= DEV_STALE_CONFIG;
return;
}
/* Unlink the device chain */
link->dev = NULL;
platform_device_unregister(&platform_dev);
pcmcia_release_configuration(link->handle);
if (link->io.NumPorts1)
pcmcia_release_io(link->handle, &link->io);
if (link->irq.AssignedIRQ)
pcmcia_release_irq(link->handle, &link->irq);
link->state &= ~DEV_CONFIG;
if (link->state & DEV_STALE_LINK)
sl811_cs_detach(link);
}
static void sl811_cs_config(dev_link_t *link)
{
client_handle_t handle = link->handle;
struct device *parent = &handle_to_dev(handle);
local_info_t *dev = link->priv;
tuple_t tuple;
cisparse_t parse;
int last_fn, last_ret;
u_char buf[64];
config_info_t conf;
cistpl_cftable_entry_t dflt = { 0 };
DBG(0, "sl811_cs_config(0x%p)\n", link);
tuple.DesiredTuple = CISTPL_CONFIG;
tuple.Attributes = 0;
tuple.TupleData = buf;
tuple.TupleDataMax = sizeof(buf);
tuple.TupleOffset = 0;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
link->conf.ConfigBase = parse.config.base;
link->conf.Present = parse.config.rmask[0];
/* Configure card */
link->state |= DEV_CONFIG;
/* Look up the current Vcc */
CS_CHECK(GetConfigurationInfo,
pcmcia_get_configuration_info(handle, &conf));
link->conf.Vcc = conf.Vcc;
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
while (1) {
cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
if (pcmcia_get_tuple_data(handle, &tuple) != 0
|| pcmcia_parse_tuple(handle, &tuple, &parse)
!= 0)
goto next_entry;
if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
dflt = *cfg;
}
if (cfg->index == 0)
goto next_entry;
link->conf.ConfigIndex = cfg->index;
/* Use power settings for Vcc and Vpp if present */
/* Note that the CIS values need to be rescaled */
if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
!= conf.Vcc)
goto next_entry;
} else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
!= conf.Vcc)
goto next_entry;
}
if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vpp1 = link->conf.Vpp2 =
cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vpp1 = link->conf.Vpp2 =
dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
/* we need an interrupt */
if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
link->conf.Attributes |= CONF_ENABLE_IRQ;
/* IO window settings */
link->io.NumPorts1 = link->io.NumPorts2 = 0;
if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
link->io.BasePort1 = io->win[0].base;
link->io.NumPorts1 = io->win[0].len;
if (pcmcia_request_io(link->handle, &link->io) != 0)
goto next_entry;
}
break;
next_entry:
if (link->io.NumPorts1)
pcmcia_release_io(link->handle, &link->io);
last_ret = pcmcia_get_next_tuple(handle, &tuple);
}
/* require an IRQ and two registers */
if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
goto cs_failed;
if (link->conf.Attributes & CONF_ENABLE_IRQ)
CS_CHECK(RequestIRQ,
pcmcia_request_irq(link->handle, &link->irq));
else
goto cs_failed;
CS_CHECK(RequestConfiguration,
pcmcia_request_configuration(link->handle, &link->conf));
sprintf(dev->node.dev_name, driver_name);
dev->node.major = dev->node.minor = 0;
link->dev = &dev->node;
printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
dev->node.dev_name, link->conf.ConfigIndex,
link->conf.Vcc/10, link->conf.Vcc%10);
if (link->conf.Vpp1)
printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
printk(", irq %d", link->irq.AssignedIRQ);
printk(", io 0x%04x-0x%04x", link->io.BasePort1,
link->io.BasePort1+link->io.NumPorts1-1);
printk("\n");
link->state &= ~DEV_CONFIG_PENDING;
if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
< 0) {
cs_failed:
printk("sl811_cs_config failed\n");
cs_error(link->handle, last_fn, last_ret);
sl811_cs_release(link);
link->state &= ~DEV_CONFIG_PENDING;
}
}
static int
sl811_cs_event(event_t event, int priority, event_callback_args_t *args)
{
dev_link_t *link = args->client_data;
DBG(1, "sl811_cs_event(0x%06x)\n", event);
switch (event) {
case CS_EVENT_CARD_REMOVAL:
link->state &= ~DEV_PRESENT;
if (link->state & DEV_CONFIG)
sl811_cs_release(link);
break;
case CS_EVENT_CARD_INSERTION:
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
sl811_cs_config(link);
break;
case CS_EVENT_PM_SUSPEND:
link->state |= DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_RESET_PHYSICAL:
if (link->state & DEV_CONFIG)
pcmcia_release_configuration(link->handle);
break;
case CS_EVENT_PM_RESUME:
link->state &= ~DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_CARD_RESET:
if (link->state & DEV_CONFIG)
pcmcia_request_configuration(link->handle, &link->conf);
DBG(0, "reset sl811-hcd here?\n");
break;
}
return 0;
}
static dev_link_t *sl811_cs_attach(void)
{
local_info_t *local;
dev_link_t *link;
client_reg_t client_reg;
int ret, i;
local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
if (!local)
return NULL;
memset(local, 0, sizeof(local_info_t));
link = &local->link;
link->priv = local;
/* Initialize */
link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
if (irq_list[0] == -1)
link->irq.IRQInfo2 = irq_mask;
else
for (i = 0; i < irq_list_count; i++)
link->irq.IRQInfo2 |= 1 << irq_list[i];
link->irq.Handler = NULL;
link->conf.Attributes = 0;
link->conf.Vcc = 33;
link->conf.IntType = INT_MEMORY_AND_IO;
/* Register with Card Services */
link->next = dev_list;
dev_list = link;
client_reg.dev_info = (dev_info_t *) &driver_name;
client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
client_reg.EventMask =
CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
client_reg.event_handler = &sl811_cs_event;
client_reg.Version = 0x0210;
client_reg.event_callback_args.client_data = link;
ret = pcmcia_register_client(&link->handle, &client_reg);
if (ret != CS_SUCCESS) {
cs_error(link->handle, RegisterClient, ret);
sl811_cs_detach(link);
return NULL;
}
return link;
}
static struct pcmcia_driver sl811_cs_driver = {
.owner = THIS_MODULE,
.drv = {
.name = (char *)driver_name,
},
.attach = sl811_cs_attach,
.detach = sl811_cs_detach,
};
/*====================================================================*/
static int __init init_sl811_cs(void)
{
return pcmcia_register_driver(&sl811_cs_driver);
}
module_init(init_sl811_cs);
static void __exit exit_sl811_cs(void)
{
pcmcia_unregister_driver(&sl811_cs_driver);
}
module_exit(exit_sl811_cs);

3
drivers/usb/serial/ftdi_sio.c
View File

@ -364,6 +364,7 @@ static struct usb_device_id id_table_8U232AM [] = {
{ USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_3, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_4, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UO100_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UM100_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, INSIDE_ACCESSO, 0, 0x3ff) },
{ USB_DEVICE_VER(INTREPID_VID, INTREPID_VALUECAN_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(INTREPID_VID, INTREPID_NEOVI_PID, 0, 0x3ff) },
@ -475,6 +476,7 @@ static struct usb_device_id id_table_FT232BM [] = {
{ USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88E_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88F_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UO100_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UM100_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_SDMUSBQSS_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_MASTERDEVEL2_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_FUTURE_0_PID, 0x400, 0xffff) },
@ -618,6 +620,7 @@ static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88E_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88F_PID, 0x400, 0xffff) },
{ USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
{ USB_DEVICE_VER(FTDI_VID, LINX_SDMUSBQSS_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_MASTERDEVEL2_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_FUTURE_0_PID, 0x400, 0xffff) },

2
drivers/usb/serial/ftdi_sio.h
View File

@ -144,6 +144,8 @@
/* ELV USB Module UO100 (PID sent by Stefan Frings) */
#define FTDI_ELV_UO100_PID 0xFB58 /* Product Id */
/* ELV USB Module UM100 (PID sent by Arnim Laeuger) */
#define FTDI_ELV_UM100_PID 0xFB5A /* Product Id */
/*
* Definitions for ID TECH (www.idt-net.com) devices

20
drivers/usb/serial/usb-serial.c
View File

@ -1297,13 +1297,6 @@ static int __init usb_serial_init(void)
goto exit_bus;
}
/* register the generic driver, if we should */
result = usb_serial_generic_register(debug);
if (result < 0) {
err("%s - registering generic driver failed", __FUNCTION__);
goto exit_generic;
}
usb_serial_tty_driver->owner = THIS_MODULE;
usb_serial_tty_driver->driver_name = "usbserial";
usb_serial_tty_driver->devfs_name = "usb/tts/";
@ -1329,17 +1322,24 @@ static int __init usb_serial_init(void)
goto exit_tty;
}
/* register the generic driver, if we should */
result = usb_serial_generic_register(debug);
if (result < 0) {
err("%s - registering generic driver failed", __FUNCTION__);
goto exit_generic;
}
info(DRIVER_DESC " " DRIVER_VERSION);
return result;
exit_generic:
usb_deregister(&usb_serial_driver);
exit_tty:
tty_unregister_driver(usb_serial_tty_driver);
exit_reg_driver:
usb_serial_generic_deregister();
exit_generic:
bus_unregister(&usb_serial_bus_type);
exit_bus:

115
fs/proc/proc_devtree.c
View File

@ -12,15 +12,8 @@
#include <asm/uaccess.h>
#ifndef HAVE_ARCH_DEVTREE_FIXUPS
static inline void set_node_proc_entry(struct device_node *np, struct proc_dir_entry *de)
{
}
static void inline set_node_name_link(struct device_node *np, struct proc_dir_entry *de)
{
}
static void inline set_node_addr_link(struct device_node *np, struct proc_dir_entry *de)
static inline void set_node_proc_entry(struct device_node *np,
struct proc_dir_entry *de)
{
}
#endif
@ -58,89 +51,67 @@ static int property_read_proc(char *page, char **start, off_t off,
/*
* Process a node, adding entries for its children and its properties.
*/
void proc_device_tree_add_node(struct device_node *np, struct proc_dir_entry *de)
void proc_device_tree_add_node(struct device_node *np,
struct proc_dir_entry *de)
{
struct property *pp;
struct proc_dir_entry *ent;
struct device_node *child, *sib;
const char *p, *at;
int l;
struct proc_dir_entry *list, **lastp, *al;
struct device_node *child;
struct proc_dir_entry *list = NULL, **lastp;
const char *p;
set_node_proc_entry(np, de);
lastp = &list;
for (child = NULL; (child = of_get_next_child(np, child));) {
p = strrchr(child->full_name, '/');
if (!p)
p = child->full_name;
else
++p;
ent = proc_mkdir(p, de);
if (ent == 0)
break;
*lastp = ent;
ent->next = NULL;
lastp = &ent->next;
proc_device_tree_add_node(child, ent);
}
of_node_put(child);
for (pp = np->properties; pp != 0; pp = pp->next) {
/*
* Yet another Apple device-tree bogosity: on some machines,
* they have properties & nodes with the same name. Those
* properties are quite unimportant for us though, thus we
* simply "skip" them here, but we do have to check.
*/
for (ent = list; ent != NULL; ent = ent->next)
if (!strcmp(ent->name, pp->name))
break;
if (ent != NULL) {
printk(KERN_WARNING "device-tree: property \"%s\" name"
" conflicts with node in %s\n", pp->name,
np->full_name);
continue;
}
/*
* Unfortunately proc_register puts each new entry
* at the beginning of the list. So we rearrange them.
*/
ent = create_proc_read_entry(pp->name, strncmp(pp->name, "security-", 9) ?
S_IRUGO : S_IRUSR, de, property_read_proc, pp);
ent = create_proc_read_entry(pp->name,
strncmp(pp->name, "security-", 9)
? S_IRUGO : S_IRUSR, de,
property_read_proc, pp);
if (ent == 0)
break;
if (!strncmp(pp->name, "security-", 9))
ent->size = 0; /* don't leak number of password chars */
else
ent->size = pp->length;
ent->next = NULL;
*lastp = ent;
lastp = &ent->next;
}
child = NULL;
while ((child = of_get_next_child(np, child))) {
p = strrchr(child->full_name, '/');
if (!p)
p = child->full_name;
else
++p;
/* chop off '@0' if the name ends with that */
l = strlen(p);
if (l > 2 && p[l-2] == '@' && p[l-1] == '0')
l -= 2;
ent = proc_mkdir(p, de);
if (ent == 0)
break;
*lastp = ent;
lastp = &ent->next;
proc_device_tree_add_node(child, ent);
/*
* If we left the address part on the name, consider
* adding symlinks from the name and address parts.
*/
if (p[l] != 0 || (at = strchr(p, '@')) == 0)
continue;
/*
* If this is the first node with a given name property,
* add a symlink with the name property as its name.
*/
sib = NULL;
while ((sib = of_get_next_child(np, sib)) && sib != child)
if (sib->name && strcmp(sib->name, child->name) == 0)
break;
if (sib == child && strncmp(p, child->name, l) != 0) {
al = proc_symlink(child->name, de, ent->name);
if (al == 0) {
of_node_put(sib);
break;
}
set_node_name_link(child, al);
*lastp = al;
lastp = &al->next;
}
of_node_put(sib);
/*
* Add another directory with the @address part as its name.
*/
al = proc_symlink(at, de, ent->name);
if (al == 0)
break;
set_node_addr_link(child, al);
*lastp = al;
lastp = &al->next;
}
of_node_put(child);
*lastp = NULL;
de->subdir = list;
}

2
fs/udf/udftime.c
View File

@ -46,7 +46,7 @@
#endif
/* How many days come before each month (0-12). */
const unsigned short int __mon_yday[2][13] =
static const unsigned short int __mon_yday[2][13] =
{
/* Normal years. */
{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },

1
include/asm-i386/timer.h
View File

@ -53,6 +53,7 @@ extern struct init_timer_opts timer_cyclone_init;
extern unsigned long calibrate_tsc(void);
extern void init_cpu_khz(void);
extern int recalibrate_cpu_khz(void);
#ifdef CONFIG_HPET_TIMER
extern struct init_timer_opts timer_hpet_init;
extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr);

13
include/asm-ppc64/prom.h
View File

@ -147,9 +147,7 @@ struct device_node {
struct device_node *sibling;
struct device_node *next; /* next device of same type */
struct device_node *allnext; /* next in list of all nodes */
struct proc_dir_entry *pde; /* this node's proc directory */
struct proc_dir_entry *name_link; /* name symlink */
struct proc_dir_entry *addr_link; /* addr symlink */
struct proc_dir_entry *pde; /* this node's proc directory */
struct kref kref;
unsigned long _flags;
};
@ -174,15 +172,6 @@ static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_e
dn->pde = de;
}
static void inline set_node_name_link(struct device_node *dn, struct proc_dir_entry *de)
{
dn->name_link = de;
}
static void inline set_node_addr_link(struct device_node *dn, struct proc_dir_entry *de)
{
dn->addr_link = de;
}
/* OBSOLETE: Old stlye node lookup */
extern struct device_node *find_devices(const char *name);

2
include/linux/cpufreq.h
View File

@ -49,7 +49,7 @@ int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
/* Frequency values here are CPU kHz so that hardware which doesn't run
* with some frequencies can complain without having to guess what per
* cent / per mille means.
* Maximum transition latency is in microseconds - if it's unknown,
* Maximum transition latency is in nanoseconds - if it's unknown,
* CPUFREQ_ETERNAL shall be used.
*/

6
include/linux/pci_ids.h
View File

@ -1230,6 +1230,12 @@
#define PCI_DEVICE_ID_NVIDIA_QUADRO4_900XGL 0x0258
#define PCI_DEVICE_ID_NVIDIA_QUADRO4_750XGL 0x0259
#define PCI_DEVICE_ID_NVIDIA_QUADRO4_700XGL 0x025B
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE 0x0265
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA 0x0266
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2 0x0267
#define PCI_DEVICE_ID_NVIDIA_NVENET_12 0x0268
#define PCI_DEVICE_ID_NVIDIA_NVENET_13 0x0269
#define PCI_DEVICE_ID_NVIDIA_MCP51_AUDIO 0x026B
#define PCI_DEVICE_ID_NVIDIA_GEFORCE4_TI_4800 0x0280
#define PCI_DEVICE_ID_NVIDIA_GEFORCE4_TI_4800_8X 0x0281
#define PCI_DEVICE_ID_NVIDIA_GEFORCE4_TI_4800SE 0x0282

6
kernel/module.c
View File

@ -1758,6 +1758,7 @@ sys_init_module(void __user *umod,
const char __user *uargs)
{
struct module *mod;
mm_segment_t old_fs = get_fs();
int ret = 0;
/* Must have permission */
@ -1775,6 +1776,9 @@ sys_init_module(void __user *umod,
return PTR_ERR(mod);
}
/* flush the icache in correct context */
set_fs(KERNEL_DS);
/* Flush the instruction cache, since we've played with text */
if (mod->module_init)
flush_icache_range((unsigned long)mod->module_init,
@ -1783,6 +1787,8 @@ sys_init_module(void __user *umod,
flush_icache_range((unsigned long)mod->module_core,
(unsigned long)mod->module_core + mod->core_size);
set_fs(old_fs);
/* Now sew it into the lists. They won't access us, since
strong_try_module_get() will fail. */
stop_machine_run(__link_module, mod, NR_CPUS);