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

This commit is contained in:
David Woodhouse 2005-06-02 16:39:11 +01:00
parent 4bcff1b37e e0d6d71440
commit 1c3f45ab2f
383 changed files with 23918 additions and 9071 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.

3
Documentation/cpusets.txt
View File

@ -252,8 +252,7 @@ in a tasks processor placement.
There is an exception to the above. If hotplug funtionality is used
to remove all the CPUs that are currently assigned to a cpuset,
then the kernel will automatically update the cpus_allowed of all
tasks attached to CPUs in that cpuset with the online CPUs of the
nearest parent cpuset that still has some CPUs online. When memory
tasks attached to CPUs in that cpuset to allow all CPUs. When memory
hotplug functionality for removing Memory Nodes is available, a
similar exception is expected to apply there as well. In general,
the kernel prefers to violate cpuset placement, over starving a task

3
Documentation/x86_64/boot-options.txt
View File

@ -25,6 +25,9 @@ APICs
noapictimer Don't set up the APIC timer
no_timer_check Don't check the IO-APIC timer. This can work around
problems with incorrect timer initialization on some boards.
Early Console
syntax: earlyprintk=vga

10
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
@ -1023,8 +1029,8 @@ W: http://www.ia64-linux.org/
S: Maintained
SN-IA64 (Itanium) SUB-PLATFORM
P: Jesse Barnes
M: jbarnes@sgi.com
P: Greg Edwards
M: edwardsg@sgi.com
L: linux-altix@sgi.com
L: linux-ia64@vger.kernel.org
W: http://www.sgi.com/altix

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 12
EXTRAVERSION =-rc4
EXTRAVERSION =-rc5
NAME=Woozy Numbat
# *DOCUMENTATION*

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();

2
arch/i386/Kconfig
View File

@ -1163,7 +1163,7 @@ config PCI_DIRECT
config PCI_MMCONFIG
bool
depends on PCI && (PCI_GOMMCONFIG || (PCI_GOANY && ACPI))
depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
select ACPI_BOOT
default y

9
arch/i386/kernel/cpu/amd.c
View File

@ -195,7 +195,7 @@ static void __init init_amd(struct cpuinfo_x86 *c)
c->x86_num_cores = 1;
}
#ifdef CONFIG_X86_SMP
#ifdef CONFIG_X86_HT
/*
* On a AMD dual core setup the lower bits of the APIC id
* distingush the cores. Assumes number of cores is a power
@ -203,8 +203,11 @@ static void __init init_amd(struct cpuinfo_x86 *c)
*/
if (c->x86_num_cores > 1) {
int cpu = smp_processor_id();
/* Fix up the APIC ID following AMD specifications. */
cpu_core_id[cpu] >>= hweight32(c->x86_num_cores - 1);
unsigned bits = 0;
while ((1 << bits) < c->x86_num_cores)
bits++;
cpu_core_id[cpu] = phys_proc_id[cpu] & ((1<<bits)-1);
phys_proc_id[cpu] >>= bits;
printk(KERN_INFO "CPU %d(%d) -> Core %d\n",
cpu, c->x86_num_cores, cpu_core_id[cpu]);
}

5
arch/i386/kernel/cpu/common.c
View File

@ -244,11 +244,8 @@ static void __init early_cpu_detect(void)
early_intel_workaround(c);
#ifdef CONFIG_SMP
#ifdef CONFIG_X86_HT
phys_proc_id[smp_processor_id()] =
#endif
cpu_core_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
#endif
}

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/cpu/intel_cacheinfo.c
View File

@ -118,7 +118,7 @@ struct _cpuid4_info {
};
#define MAX_CACHE_LEAVES 4
static unsigned short __devinitdata num_cache_leaves;
static unsigned short num_cache_leaves;
static int __devinit cpuid4_cache_lookup(int index, struct _cpuid4_info *this_leaf)
{

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)

5
arch/i386/kernel/smpboot.c
View File

@ -888,6 +888,7 @@ void *xquad_portio;
cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
EXPORT_SYMBOL(cpu_core_map);
static void __init smp_boot_cpus(unsigned int max_cpus)
{
@ -1073,8 +1074,10 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
cpu_set(cpu, cpu_sibling_map[cpu]);
}
if (siblings != smp_num_siblings)
if (siblings != smp_num_siblings) {
printk(KERN_WARNING "WARNING: %d siblings found for CPU%d, should be %d\n", siblings, cpu, smp_num_siblings);
smp_num_siblings = siblings;
}
if (c->x86_num_cores > 1) {
for (i = 0; i < NR_CPUS; i++) {

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;

17
arch/i386/mach-voyager/voyager_smp.c
View File

@ -97,7 +97,6 @@ static void ack_vic_irq(unsigned int irq);
static void vic_enable_cpi(void);
static void do_boot_cpu(__u8 cpuid);
static void do_quad_bootstrap(void);
static inline void wrapper_smp_local_timer_interrupt(struct pt_regs *);
int hard_smp_processor_id(void);
@ -125,6 +124,14 @@ send_QIC_CPI(__u32 cpuset, __u8 cpi)
}
}
static inline void
wrapper_smp_local_timer_interrupt(struct pt_regs *regs)
{
irq_enter();
smp_local_timer_interrupt(regs);
irq_exit();
}
static inline void
send_one_CPI(__u8 cpu, __u8 cpi)
{
@ -1249,14 +1256,6 @@ smp_vic_timer_interrupt(struct pt_regs *regs)
smp_local_timer_interrupt(regs);
}
static inline void
wrapper_smp_local_timer_interrupt(struct pt_regs *regs)
{
irq_enter();
smp_local_timer_interrupt(regs);
irq_exit();
}
/* local (per CPU) timer interrupt. It does both profiling and
* process statistics/rescheduling.
*

10
arch/i386/mm/ioremap.c
View File

@ -238,19 +238,21 @@ void iounmap(volatile void __iomem *addr)
addr < phys_to_virt(ISA_END_ADDRESS))
return;
p = remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
write_lock(&vmlist_lock);
p = __remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
if (!p) {
printk("__iounmap: bad address %p\n", addr);
return;
printk("iounmap: bad address %p\n", addr);
goto out_unlock;
}
if ((p->flags >> 20) && p->phys_addr < virt_to_phys(high_memory) - 1) {
/* p->size includes the guard page, but cpa doesn't like that */
change_page_attr(virt_to_page(__va(p->phys_addr)),
p->size >> PAGE_SHIFT,
PAGE_KERNEL);
global_flush_tlb();
}
out_unlock:
write_unlock(&vmlist_lock);
kfree(p);
}

5
arch/i386/pci/irq.c
View File

@ -1029,7 +1029,6 @@ void pcibios_penalize_isa_irq(int irq)
static int pirq_enable_irq(struct pci_dev *dev)
{
u8 pin;
extern int via_interrupt_line_quirk;
struct pci_dev *temp_dev;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
@ -1084,10 +1083,6 @@ static int pirq_enable_irq(struct pci_dev *dev)
printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of device %s.%s\n",
'A' + pin, pci_name(dev), msg);
}
/* VIA bridges use interrupt line for apic/pci steering across
the V-Link */
else if (via_interrupt_line_quirk)
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq & 15);
return 0;
}

2
arch/ia64/ia32/sys_ia32.c
View File

@ -2427,7 +2427,7 @@ sys32_epoll_wait(int epfd, struct epoll_event32 __user * events, int maxevents,
{
struct epoll_event *events64 = NULL;
mm_segment_t old_fs = get_fs();
int error, numevents, size;
int numevents, size;
int evt_idx;
int do_free_pages = 0;

4
arch/ia64/kernel/entry.S
View File

@ -1182,7 +1182,7 @@ ENTRY(notify_resume_user)
;;
(pNonSys) mov out2=0 // out2==0 => not a syscall
.fframe 16
.spillpsp ar.unat, 16 // (note that offset is relative to psp+0x10!)
.spillsp ar.unat, 16
st8 [sp]=r9,-16 // allocate space for ar.unat and save it
st8 [out1]=loc1,-8 // save ar.pfs, out1=&sigscratch
.body
@ -1208,7 +1208,7 @@ GLOBAL_ENTRY(sys_rt_sigsuspend)
adds out2=8,sp // out2=&sigscratch->ar_pfs
;;
.fframe 16
.spillpsp ar.unat, 16 // (note that offset is relative to psp+0x10!)
.spillsp ar.unat, 16
st8 [sp]=r9,-16 // allocate space for ar.unat and save it
st8 [out2]=loc1,-8 // save ar.pfs, out2=&sigscratch
.body

8
arch/ia64/kernel/mca.c
View File

@ -1103,8 +1103,6 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg, struct pt_regs *ptregs)
return IRQ_HANDLED;
}
#endif /* CONFIG_ACPI */
/*
* ia64_mca_cpe_poll
*
@ -1122,6 +1120,8 @@ ia64_mca_cpe_poll (unsigned long dummy)
platform_send_ipi(first_cpu(cpu_online_map), IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0);
}
#endif /* CONFIG_ACPI */
/*
* C portion of the OS INIT handler
*
@ -1390,8 +1390,7 @@ ia64_mca_init(void)
register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction);
#ifdef CONFIG_ACPI
/* Setup the CPEI/P vector and handler */
cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
/* Setup the CPEI/P handler */
register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction);
#endif
@ -1436,6 +1435,7 @@ ia64_mca_late_init(void)
#ifdef CONFIG_ACPI
/* Setup the CPEI/P vector and handler */
cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
init_timer(&cpe_poll_timer);
cpe_poll_timer.function = ia64_mca_cpe_poll;

3
arch/ia64/kernel/minstate.h
View File

@ -41,7 +41,7 @@
(pKStk) addl r3=THIS_CPU(ia64_mca_data),r3;; \
(pKStk) ld8 r3 = [r3];; \
(pKStk) addl r3=IA64_MCA_CPU_INIT_STACK_OFFSET,r3;; \
(pKStk) addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3; \
(pKStk) addl r1=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3; \
(pUStk) mov ar.rsc=0; /* set enforced lazy mode, pl 0, little-endian, loadrs=0 */ \
(pUStk) addl r22=IA64_RBS_OFFSET,r1; /* compute base of register backing store */ \
;; \
@ -50,7 +50,6 @@
(pUStk) mov r23=ar.bspstore; /* save ar.bspstore */ \
(pUStk) dep r22=-1,r22,61,3; /* compute kernel virtual addr of RBS */ \
;; \
(pKStk) addl r1=-IA64_PT_REGS_SIZE,r1; /* if in kernel mode, use sp (r12) */ \
(pUStk) mov ar.bspstore=r22; /* switch to kernel RBS */ \
;; \
(pUStk) mov r18=ar.bsp; \

175
arch/ia64/kernel/perfmon.c
View File

@ -11,7 +11,7 @@
* Version Perfmon-2.x is a rewrite of perfmon-1.x
* by Stephane Eranian, Hewlett Packard Co.
*
* Copyright (C) 1999-2003, 2005 Hewlett Packard Co
* Copyright (C) 1999-2005 Hewlett Packard Co
* Stephane Eranian <eranian@hpl.hp.com>
* David Mosberger-Tang <davidm@hpl.hp.com>
*
@ -497,6 +497,9 @@ typedef struct {
static pfm_stats_t pfm_stats[NR_CPUS];
static pfm_session_t pfm_sessions; /* global sessions information */
static spinlock_t pfm_alt_install_check = SPIN_LOCK_UNLOCKED;
static pfm_intr_handler_desc_t *pfm_alt_intr_handler;
static struct proc_dir_entry *perfmon_dir;
static pfm_uuid_t pfm_null_uuid = {0,};
@ -606,6 +609,7 @@ DEFINE_PER_CPU(unsigned long, pfm_syst_info);
DEFINE_PER_CPU(struct task_struct *, pmu_owner);
DEFINE_PER_CPU(pfm_context_t *, pmu_ctx);
DEFINE_PER_CPU(unsigned long, pmu_activation_number);
EXPORT_PER_CPU_SYMBOL_GPL(pfm_syst_info);
/* forward declaration */
@ -1325,7 +1329,7 @@ pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
error_conflict:
DPRINT(("system wide not possible, conflicting session [%d] on CPU%d\n",
pfm_sessions.pfs_sys_session[cpu]->pid,
smp_processor_id()));
cpu));
abort:
UNLOCK_PFS(flags);
@ -5555,26 +5559,32 @@ pfm_interrupt_handler(int irq, void *arg, struct pt_regs *regs)
int ret;
this_cpu = get_cpu();
min = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min;
max = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max;
if (likely(!pfm_alt_intr_handler)) {
min = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min;
max = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max;
start_cycles = ia64_get_itc();
start_cycles = ia64_get_itc();
ret = pfm_do_interrupt_handler(irq, arg, regs);
ret = pfm_do_interrupt_handler(irq, arg, regs);
total_cycles = ia64_get_itc();
total_cycles = ia64_get_itc();
/*
* don't measure spurious interrupts
*/
if (likely(ret == 0)) {
total_cycles -= start_cycles;
/*
* don't measure spurious interrupts
*/
if (likely(ret == 0)) {
total_cycles -= start_cycles;
if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles;
if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles;
if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles;
if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles;
pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles;
pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles;
}
}
else {
(*pfm_alt_intr_handler->handler)(irq, arg, regs);
}
put_cpu_no_resched();
return IRQ_HANDLED;
}
@ -6425,6 +6435,141 @@ static struct irqaction perfmon_irqaction = {
.name = "perfmon"
};
static void
pfm_alt_save_pmu_state(void *data)
{
struct pt_regs *regs;
regs = ia64_task_regs(current);
DPRINT(("called\n"));
/*
* should not be necessary but
* let's take not risk
*/
pfm_clear_psr_up();
pfm_clear_psr_pp();
ia64_psr(regs)->pp = 0;
/*
* This call is required
* May cause a spurious interrupt on some processors
*/
pfm_freeze_pmu();
ia64_srlz_d();
}
void
pfm_alt_restore_pmu_state(void *data)
{
struct pt_regs *regs;
regs = ia64_task_regs(current);
DPRINT(("called\n"));
/*
* put PMU back in state expected
* by perfmon
*/
pfm_clear_psr_up();
pfm_clear_psr_pp();
ia64_psr(regs)->pp = 0;
/*
* perfmon runs with PMU unfrozen at all times
*/
pfm_unfreeze_pmu();
ia64_srlz_d();
}
int
pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
{
int ret, i;
int reserve_cpu;
/* some sanity checks */
if (hdl == NULL || hdl->handler == NULL) return -EINVAL;
/* do the easy test first */
if (pfm_alt_intr_handler) return -EBUSY;
/* one at a time in the install or remove, just fail the others */
if (!spin_trylock(&pfm_alt_install_check)) {
return -EBUSY;
}
/* reserve our session */
for_each_online_cpu(reserve_cpu) {
ret = pfm_reserve_session(NULL, 1, reserve_cpu);
if (ret) goto cleanup_reserve;
}
/* save the current system wide pmu states */
ret = on_each_cpu(pfm_alt_save_pmu_state, NULL, 0, 1);
if (ret) {
DPRINT(("on_each_cpu() failed: %d\n", ret));
goto cleanup_reserve;
}
/* officially change to the alternate interrupt handler */
pfm_alt_intr_handler = hdl;
spin_unlock(&pfm_alt_install_check);
return 0;
cleanup_reserve:
for_each_online_cpu(i) {
/* don't unreserve more than we reserved */
if (i >= reserve_cpu) break;
pfm_unreserve_session(NULL, 1, i);
}
spin_unlock(&pfm_alt_install_check);
return ret;
}
EXPORT_SYMBOL_GPL(pfm_install_alt_pmu_interrupt);
int
pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
{
int i;
int ret;
if (hdl == NULL) return -EINVAL;
/* cannot remove someone else's handler! */
if (pfm_alt_intr_handler != hdl) return -EINVAL;
/* one at a time in the install or remove, just fail the others */
if (!spin_trylock(&pfm_alt_install_check)) {
return -EBUSY;
}
pfm_alt_intr_handler = NULL;
ret = on_each_cpu(pfm_alt_restore_pmu_state, NULL, 0, 1);
if (ret) {
DPRINT(("on_each_cpu() failed: %d\n", ret));
}
for_each_online_cpu(i) {
pfm_unreserve_session(NULL, 1, i);
}
spin_unlock(&pfm_alt_install_check);
return 0;
}
EXPORT_SYMBOL_GPL(pfm_remove_alt_pmu_interrupt);
/*
* perfmon initialization routine, called from the initcall() table
*/

20
arch/ia64/kernel/ptrace.c
View File

@ -692,16 +692,30 @@ convert_to_non_syscall (struct task_struct *child, struct pt_regs *pt,
unsigned long cfm)
{
struct unw_frame_info info, prev_info;
unsigned long ip, pr;
unsigned long ip, sp, pr;
unw_init_from_blocked_task(&info, child);
while (1) {
prev_info = info;
if (unw_unwind(&info) < 0)
return;
if (unw_get_rp(&info, &ip) < 0)
unw_get_sp(&info, &sp);
if ((long)((unsigned long)child + IA64_STK_OFFSET - sp)
< IA64_PT_REGS_SIZE) {
dprintk("ptrace.%s: ran off the top of the kernel "
"stack\n", __FUNCTION__);
return;
if (ip < FIXADDR_USER_END)
}
if (unw_get_pr (&prev_info, &pr) < 0) {
unw_get_rp(&prev_info, &ip);
dprintk("ptrace.%s: failed to read "
"predicate register (ip=0x%lx)\n",
__FUNCTION__, ip);
return;
}
if (unw_is_intr_frame(&info)
&& (pr & (1UL << PRED_USER_STACK)))
break;
}

2
arch/ia64/kernel/smpboot.c
View File

@ -624,7 +624,7 @@ static struct {
__u16 thread_id;
__u16 proc_fixed_addr;
__u8 valid;
}mt_info[NR_CPUS] __devinit;
} mt_info[NR_CPUS] __devinitdata;
#ifdef CONFIG_HOTPLUG_CPU
static inline void

7
arch/ia64/kernel/sys_ia64.c
View File

@ -182,13 +182,6 @@ do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, un
}
}
/*
* A zero mmap always succeeds in Linux, independent of whether or not the
* remaining arguments are valid.
*/
if (len == 0)
goto out;
/* Careful about overflows.. */
len = PAGE_ALIGN(len);
if (!len || len > TASK_SIZE) {

2
arch/ia64/sn/kernel/setup.c
View File

@ -271,6 +271,8 @@ void __init sn_setup(char **cmdline_p)
int major = sn_sal_rev_major(), minor = sn_sal_rev_minor();
extern void sn_cpu_init(void);
ia64_sn_plat_set_error_handling_features();
/*
* If the generic code has enabled vga console support - lets
* get rid of it again. This is a kludge for the fact that ACPI

4
arch/ppc/Kconfig
View File

@ -1160,12 +1160,12 @@ config PCI_QSPAN
config PCI_8260
bool
depends on PCI && 8260 && !8272
depends on PCI && 8260
default y
config 8260_PCI9
bool " Enable workaround for MPC826x erratum PCI 9"
depends on PCI_8260
depends on PCI_8260 && !ADS8272
default y
choice

3
arch/ppc/boot/images/Makefile
View File

@ -22,7 +22,8 @@ targets += uImage
$(obj)/uImage: $(obj)/vmlinux.gz
$(Q)rm -f $@
$(call if_changed,uimage)
@echo ' Image: $@' $(if $(wildcard $@),'is ready','not made')
@echo -n ' Image: $@ '
@if [ -f $@ ]; then echo 'is ready' ; else echo 'not made'; fi
# Files generated that shall be removed upon make clean
clean-files := sImage vmapus vmlinux* miboot* zImage* uImage

117
arch/ppc/configs/mpc8555_cds_defconfig
View File

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.11-rc1
# Thu Jan 20 01:25:35 2005
# Linux kernel version: 2.6.12-rc4
# Tue May 17 11:56:01 2005
#
CONFIG_MMU=y
CONFIG_GENERIC_HARDIRQS=y
@ -11,6 +11,7 @@ CONFIG_HAVE_DEC_LOCK=y
CONFIG_PPC=y
CONFIG_PPC32=y
CONFIG_GENERIC_NVRAM=y
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
#
# Code maturity level options
@ -18,6 +19,7 @@ CONFIG_GENERIC_NVRAM=y
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
#
# General setup
@ -29,12 +31,14 @@ CONFIG_SYSVIPC=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_SYSCTL=y
# CONFIG_AUDIT is not set
CONFIG_LOG_BUF_SHIFT=14
# CONFIG_HOTPLUG is not set
CONFIG_KOBJECT_UEVENT=y
# CONFIG_IKCONFIG is not set
CONFIG_EMBEDDED=y
# CONFIG_KALLSYMS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
# CONFIG_EPOLL is not set
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
@ -44,6 +48,7 @@ CONFIG_CC_ALIGN_LABELS=0
CONFIG_CC_ALIGN_LOOPS=0
CONFIG_CC_ALIGN_JUMPS=0
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
#
# Loadable module support
@ -62,10 +67,12 @@ CONFIG_CC_ALIGN_JUMPS=0
CONFIG_E500=y
CONFIG_BOOKE=y
CONFIG_FSL_BOOKE=y
# CONFIG_PHYS_64BIT is not set
CONFIG_SPE=y
CONFIG_MATH_EMULATION=y
# CONFIG_CPU_FREQ is not set
CONFIG_PPC_GEN550=y
# CONFIG_PM is not set
CONFIG_85xx=y
CONFIG_PPC_INDIRECT_PCI_BE=y
@ -76,6 +83,7 @@ CONFIG_PPC_INDIRECT_PCI_BE=y
CONFIG_MPC8555_CDS=y
# CONFIG_MPC8560_ADS is not set
# CONFIG_SBC8560 is not set
# CONFIG_STX_GP3 is not set
CONFIG_MPC8555=y
CONFIG_85xx_PCI2=y
@ -90,6 +98,7 @@ CONFIG_CPM2=y
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_MISC is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_ISA_DMA_API=y
#
# Bus options
@ -104,10 +113,6 @@ CONFIG_PCI_NAMES=y
#
# CONFIG_PCCARD is not set
#
# PC-card bridges
#
#
# Advanced setup
#
@ -180,7 +185,59 @@ CONFIG_IOSCHED_CFQ=y
#
# ATA/ATAPI/MFM/RLL support
#
# CONFIG_IDE is not set
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
#
# Please see Documentation/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_IDE_SATA is not set
CONFIG_BLK_DEV_IDEDISK=y
# CONFIG_IDEDISK_MULTI_MODE is not set
# CONFIG_BLK_DEV_IDECD is not set
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_IDE_TASK_IOCTL is not set
#
# IDE chipset support/bugfixes
#
CONFIG_IDE_GENERIC=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_IDEPCI_SHARE_IRQ=y
# CONFIG_BLK_DEV_OFFBOARD is not set
CONFIG_BLK_DEV_GENERIC=y
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_SL82C105 is not set
CONFIG_BLK_DEV_IDEDMA_PCI=y
# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
CONFIG_IDEDMA_PCI_AUTO=y
# CONFIG_IDEDMA_ONLYDISK is not set
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD74XX is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_TRIFLEX is not set
# CONFIG_BLK_DEV_CY82C693 is not set
# CONFIG_BLK_DEV_CS5520 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_BLK_DEV_HPT34X is not set
# CONFIG_BLK_DEV_HPT366 is not set
# CONFIG_BLK_DEV_SC1200 is not set
# CONFIG_BLK_DEV_PIIX is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_PDC202XX_OLD is not set
# CONFIG_BLK_DEV_PDC202XX_NEW is not set
# CONFIG_BLK_DEV_SVWKS is not set
# CONFIG_BLK_DEV_SIIMAGE is not set
# CONFIG_BLK_DEV_SLC90E66 is not set
# CONFIG_BLK_DEV_TRM290 is not set
CONFIG_BLK_DEV_VIA82CXXX=y
# CONFIG_IDE_ARM is not set
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_IVB is not set
CONFIG_IDEDMA_AUTO=y
# CONFIG_BLK_DEV_HD is not set
#
# SCSI device support
@ -220,7 +277,6 @@ CONFIG_NET=y
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
# CONFIG_NETLINK_DEV is not set
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
@ -369,14 +425,6 @@ CONFIG_INPUT=y
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set
#
# Input I/O drivers
#
# CONFIG_GAMEPORT is not set
CONFIG_SOUND_GAMEPORT=y
# CONFIG_SERIO is not set
# CONFIG_SERIO_I8042 is not set
#
# Input Device Drivers
#
@ -386,6 +434,13 @@ CONFIG_SOUND_GAMEPORT=y
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
# CONFIG_GAMEPORT is not set
CONFIG_SOUND_GAMEPORT=y
#
# Character devices
#
@ -406,6 +461,7 @@ CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_CPM is not set
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
@ -433,6 +489,11 @@ CONFIG_GEN_RTC=y
# CONFIG_DRM is not set
# CONFIG_RAW_DRIVER is not set
#
# TPM devices
#
# CONFIG_TCG_TPM is not set
#
# I2C support
#
@ -456,11 +517,11 @@ CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_ISA is not set
CONFIG_I2C_MPC=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 is not set
# CONFIG_SCx200_ACB is not set
@ -483,7 +544,9 @@ CONFIG_I2C_MPC=y
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_FSCHER is not set
# CONFIG_SENSORS_FSCPOS is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM75 is not set
@ -494,9 +557,11 @@ CONFIG_I2C_MPC=y
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_W83781D is not set
@ -506,10 +571,12 @@ CONFIG_I2C_MPC=y
#
# Other I2C Chip support
#
# CONFIG_SENSORS_DS1337 is not set
# CONFIG_SENSORS_EEPROM is not set
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_SENSORS_RTC8564 is not set
# CONFIG_SENSORS_M41T00 is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
@ -538,7 +605,6 @@ CONFIG_I2C_MPC=y
# Graphics support
#
# CONFIG_FB is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
#
# Sound
@ -548,13 +614,9 @@ CONFIG_I2C_MPC=y
#
# USB support
#
# CONFIG_USB is not set
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information
#
# CONFIG_USB is not set
#
# USB Gadget Support
@ -585,6 +647,10 @@ CONFIG_JBD=y
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
#
# XFS support
#
# CONFIG_XFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
@ -646,7 +712,6 @@ CONFIG_NFS_FS=y
# CONFIG_NFSD is not set
CONFIG_ROOT_NFS=y
CONFIG_LOCKD=y
# CONFIG_EXPORTFS is not set
CONFIG_SUNRPC=y
# CONFIG_RPCSEC_GSS_KRB5 is not set
# CONFIG_RPCSEC_GSS_SPKM3 is not set
@ -698,7 +763,9 @@ CONFIG_CRC32=y
#
# Kernel hacking
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
# CONFIG_KGDB_CONSOLE is not set
# CONFIG_SERIAL_TEXT_DEBUG is not set

15
arch/ppc/kernel/head_44x.S
View File

@ -330,8 +330,9 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
andis. r11, r10, 0x8000
beq 3f
lis r11, TASK_SIZE@h
cmplw r10, r11
blt+ 3f
lis r11, swapper_pg_dir@h
ori r11, r11, swapper_pg_dir@l
@ -464,8 +465,9 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
andis. r11, r10, 0x8000
beq 3f
lis r11, TASK_SIZE@h
cmplw r10, r11
blt+ 3f
lis r11, swapper_pg_dir@h
ori r11, r11, swapper_pg_dir@l
@ -533,8 +535,9 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
andis. r11, r10, 0x8000
beq 3f
lis r11, TASK_SIZE@h
cmplw r10, r11
blt+ 3f
lis r11, swapper_pg_dir@h
ori r11, r11, swapper_pg_dir@l

15
arch/ppc/kernel/head_fsl_booke.S
View File

@ -232,7 +232,8 @@ skpinv: addi r6,r6,1 /* Increment */
tlbwe
/* 7. Jump to KERNELBASE mapping */
li r7,0
lis r7,MSR_KERNEL@h
ori r7,r7,MSR_KERNEL@l
bl 1f /* Find our address */
1: mflr r9
rlwimi r6,r9,0,20,31
@ -293,6 +294,18 @@ skpinv: addi r6,r6,1 /* Increment */
mtspr SPRN_HID0, r2
#endif
#if !defined(CONFIG_BDI_SWITCH)
/*
* The Abatron BDI JTAG debugger does not tolerate others
* mucking with the debug registers.
*/
lis r2,DBCR0_IDM@h
mtspr SPRN_DBCR0,r2
/* clear any residual debug events */
li r2,-1
mtspr SPRN_DBSR,r2
#endif
/*
* This is where the main kernel code starts.
*/

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

@ -499,7 +499,7 @@ static int __init set_preferred_console(void)
{
struct device_node *prom_stdout;
char *name;
int offset;
int offset = 0;
if (of_stdout_device == NULL)
return -ENODEV;

7
arch/ppc/kernel/traps.c
View File

@ -408,12 +408,7 @@ static int emulate_string_inst(struct pt_regs *regs, u32 instword)
/* Early out if we are an invalid form of lswx */
if ((instword & INST_STRING_MASK) == INST_LSWX)
if ((rA >= rT) || (NB_RB >= rT) || (rT == rA) || (rT == NB_RB))
return -EINVAL;
/* Early out if we are an invalid form of lswi */
if ((instword & INST_STRING_MASK) == INST_LSWI)
if ((rA >= rT) || (rT == rA))
if ((rT == rA) || (rT == NB_RB))
return -EINVAL;
EA = (rA == 0) ? 0 : regs->gpr[rA];

7
arch/ppc/lib/string.S
View File

@ -446,6 +446,7 @@ _GLOBAL(__copy_tofrom_user)
#ifdef CONFIG_8xx
/* Don't use prefetch on 8xx */
mtctr r0
li r0,0
53: COPY_16_BYTES_WITHEX(0)
bdnz 53b
@ -564,7 +565,9 @@ _GLOBAL(__copy_tofrom_user)
/* or write fault in cacheline loop */
105: li r9,1
92: li r3,LG_CACHELINE_BYTES
b 99f
mfctr r8
add r0,r0,r8
b 106f
/* read fault in final word loop */
108: li r9,0
b 93f
@ -585,7 +588,7 @@ _GLOBAL(__copy_tofrom_user)
* r5 + (ctr << r3), and r9 is 0 for read or 1 for write.
*/
99: mfctr r0
slw r3,r0,r3
106: slw r3,r0,r3
add. r3,r3,r5
beq 120f /* shouldn't happen */
cmpwi 0,r9,0

1
arch/ppc/mm/init.c
View File

@ -179,6 +179,7 @@ void free_initmem(void)
if (!have_of)
FREESEC(openfirmware);
printk("\n");
ppc_md.progress = NULL;
#undef FREESEC
}

1
arch/ppc/platforms/83xx/mpc834x_sys.c
View File

@ -127,7 +127,6 @@ mpc834x_sys_map_io(void)
{
/* we steal the lowest ioremap addr for virt space */
io_block_mapping(VIRT_IMMRBAR, immrbar, 1024*1024, _PAGE_IO);
io_block_mapping(BCSR_VIRT_ADDR, BCSR_PHYS_ADDR, BCSR_SIZE, _PAGE_IO);
}
int

7
arch/ppc/platforms/83xx/mpc834x_sys.h
View File

@ -26,9 +26,14 @@
#define VIRT_IMMRBAR ((uint)0xfe000000)
#define BCSR_PHYS_ADDR ((uint)0xf8000000)
#define BCSR_VIRT_ADDR ((uint)0xfe100000)
#define BCSR_SIZE ((uint)(32 * 1024))
#define BCSR_MISC_REG2_OFF 0x07
#define BCSR_MISC_REG2_PORESET 0x01
#define BCSR_MISC_REG3_OFF 0x08
#define BCSR_MISC_REG3_CNFLOCK 0x80
#ifdef CONFIG_PCI
/* PCI interrupt controller */
#define PIRQA MPC83xx_IRQ_IRQ4

3
arch/ppc/platforms/85xx/mpc8540_ads.c
View File

@ -210,6 +210,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
ppc_md.early_serial_map = mpc85xx_early_serial_map;
#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
if (ppc_md.progress)
ppc_md.progress("mpc8540ads_init(): exit", 0);

143
arch/ppc/platforms/85xx/mpc85xx_cds_common.c
View File

@ -44,6 +44,7 @@
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/open_pic.h>
#include <asm/i8259.h>
#include <asm/bootinfo.h>
#include <asm/pci-bridge.h>
#include <asm/mpc85xx.h>
@ -181,6 +182,7 @@ void __init
mpc85xx_cds_init_IRQ(void)
{
bd_t *binfo = (bd_t *) __res;
int i;
/* Determine the Physical Address of the OpenPIC regs */
phys_addr_t OpenPIC_PAddr = binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET;
@ -198,6 +200,15 @@ mpc85xx_cds_init_IRQ(void)
*/
openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET);
#ifdef CONFIG_PCI
openpic_hookup_cascade(PIRQ0A, "82c59 cascade", i8259_irq);
for (i = 0; i < NUM_8259_INTERRUPTS; i++)
irq_desc[i].handler = &i8259_pic;
i8259_init(0);
#endif
#ifdef CONFIG_CPM2
/* Setup CPM2 PIC */
cpm2_init_IRQ();
@ -231,7 +242,7 @@ mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
* interrupt on slot */
{
{ 0, 1, 2, 3 }, /* 16 - PMC */
{ 3, 0, 0, 0 }, /* 17 P2P (Tsi320) */
{ 0, 1, 2, 3 }, /* 17 P2P (Tsi320) */
{ 0, 1, 2, 3 }, /* 18 - Slot 1 */
{ 1, 2, 3, 0 }, /* 19 - Slot 2 */
{ 2, 3, 0, 1 }, /* 20 - Slot 3 */
@ -280,13 +291,135 @@ mpc85xx_exclude_device(u_char bus, u_char devfn)
return PCIBIOS_DEVICE_NOT_FOUND;
#endif
/* We explicitly do not go past the Tundra 320 Bridge */
if (bus == 1)
if ((bus == 1) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))
return PCIBIOS_DEVICE_NOT_FOUND;
if ((bus == 0) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))
return PCIBIOS_DEVICE_NOT_FOUND;
else
return PCIBIOS_SUCCESSFUL;
}
void __init
mpc85xx_cds_enable_via(struct pci_controller *hose)
{
u32 pci_class;
u16 vid, did;
early_read_config_dword(hose, 0, 0x88, PCI_CLASS_REVISION, &pci_class);
if ((pci_class >> 16) != PCI_CLASS_BRIDGE_PCI)
return;
/* Configure P2P so that we can reach bus 1 */
early_write_config_byte(hose, 0, 0x88, PCI_PRIMARY_BUS, 0);
early_write_config_byte(hose, 0, 0x88, PCI_SECONDARY_BUS, 1);
early_write_config_byte(hose, 0, 0x88, PCI_SUBORDINATE_BUS, 0xff);
early_read_config_word(hose, 1, 0x10, PCI_VENDOR_ID, &vid);
early_read_config_word(hose, 1, 0x10, PCI_DEVICE_ID, &did);
if ((vid != PCI_VENDOR_ID_VIA) ||
(did != PCI_DEVICE_ID_VIA_82C686))
return;
/* Enable USB and IDE functions */
early_write_config_byte(hose, 1, 0x10, 0x48, 0x08);
}
void __init
mpc85xx_cds_fixup_via(struct pci_controller *hose)
{
u32 pci_class;
u16 vid, did;
early_read_config_dword(hose, 0, 0x88, PCI_CLASS_REVISION, &pci_class);
if ((pci_class >> 16) != PCI_CLASS_BRIDGE_PCI)
return;
/*
* Force the backplane P2P bridge to have a window
* open from 0x00000000-0x00001fff in PCI I/O space.
* This allows legacy I/O (i8259, etc) on the VIA
* southbridge to be accessed.
*/
early_write_config_byte(hose, 0, 0x88, PCI_IO_BASE, 0x00);
early_write_config_word(hose, 0, 0x88, PCI_IO_BASE_UPPER16, 0x0000);
early_write_config_byte(hose, 0, 0x88, PCI_IO_LIMIT, 0x10);
early_write_config_word(hose, 0, 0x88, PCI_IO_LIMIT_UPPER16, 0x0000);
early_read_config_word(hose, 1, 0x10, PCI_VENDOR_ID, &vid);
early_read_config_word(hose, 1, 0x10, PCI_DEVICE_ID, &did);
if ((vid != PCI_VENDOR_ID_VIA) ||
(did != PCI_DEVICE_ID_VIA_82C686))
return;
/*
* Since the P2P window was forced to cover the fixed
* legacy I/O addresses, it is necessary to manually
* place the base addresses for the IDE and USB functions
* within this window.
*/
/* Function 1, IDE */
early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_0, 0x1ff8);
early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_1, 0x1ff4);
early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_2, 0x1fe8);
early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_3, 0x1fe4);
early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_4, 0x1fd0);
/* Function 2, USB ports 0-1 */
early_write_config_dword(hose, 1, 0x12, PCI_BASE_ADDRESS_4, 0x1fa0);
/* Function 3, USB ports 2-3 */
early_write_config_dword(hose, 1, 0x13, PCI_BASE_ADDRESS_4, 0x1f80);
/* Function 5, Power Management */
early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_0, 0x1e00);
early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_1, 0x1dfc);
early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_2, 0x1df8);
/* Function 6, AC97 Interface */
early_write_config_dword(hose, 1, 0x16, PCI_BASE_ADDRESS_0, 0x1c00);
}
void __init
mpc85xx_cds_pcibios_fixup(void)
{
struct pci_dev *dev = NULL;
u_char c;
if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C586_1, NULL))) {
/*
* U-Boot does not set the enable bits
* for the IDE device. Force them on here.
*/
pci_read_config_byte(dev, 0x40, &c);
c |= 0x03; /* IDE: Chip Enable Bits */
pci_write_config_byte(dev, 0x40, c);
/*
* Since only primary interface works, force the
* IDE function to standard primary IDE interrupt
* w/ 8259 offset
*/
dev->irq = 14;
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
}
/*
* Force legacy USB interrupt routing
*/
if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C586_2, NULL))) {
dev->irq = 10;
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 10);
}
if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C586_2, dev))) {
dev->irq = 11;
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
}
}
#endif /* CONFIG_PCI */
TODC_ALLOC();
@ -328,6 +461,9 @@ mpc85xx_cds_setup_arch(void)
loops_per_jiffy = freq / HZ;
#ifdef CONFIG_PCI
/* VIA IDE configuration */
ppc_md.pcibios_fixup = mpc85xx_cds_pcibios_fixup;
/* setup PCI host bridges */
mpc85xx_setup_hose();
#endif
@ -459,6 +595,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
ppc_md.early_serial_map = mpc85xx_early_serial_map;
#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
if (ppc_md.progress)
ppc_md.progress("mpc85xx_cds_init(): exit", 0);

3
arch/ppc/platforms/85xx/mpc85xx_cds_common.h
View File

@ -77,4 +77,7 @@
#define MPC85XX_PCI2_IO_SIZE 0x01000000
#define NR_8259_INTS 16
#define CPM_IRQ_OFFSET NR_8259_INTS
#endif /* __MACH_MPC85XX_CDS_H__ */

3
arch/ppc/platforms/85xx/sbc8560.c
View File

@ -221,6 +221,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
ppc_md.early_serial_map = sbc8560_early_serial_map;
#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
if (ppc_md.progress)
ppc_md.progress("sbc8560_init(): exit", 0);

36
arch/ppc/platforms/pmac_cpufreq.c
View File

@ -85,14 +85,11 @@ static int no_schedule;
static int has_cpu_l2lve;
#define PMAC_CPU_LOW_SPEED 1
#define PMAC_CPU_HIGH_SPEED 0
/* There are only two frequency states for each processor. Values
* are in kHz for the time being.
*/
#define CPUFREQ_HIGH PMAC_CPU_HIGH_SPEED
#define CPUFREQ_LOW PMAC_CPU_LOW_SPEED
#define CPUFREQ_HIGH 0
#define CPUFREQ_LOW 1
static struct cpufreq_frequency_table pmac_cpu_freqs[] = {
{CPUFREQ_HIGH, 0},
@ -100,6 +97,11 @@ static struct cpufreq_frequency_table pmac_cpu_freqs[] = {
{0, CPUFREQ_TABLE_END},
};
static struct freq_attr* pmac_cpu_freqs_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static inline void local_delay(unsigned long ms)
{
if (no_schedule)
@ -269,6 +271,8 @@ static int __pmac pmu_set_cpu_speed(int low_speed)
#ifdef DEBUG_FREQ
printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1));
#endif
pmu_suspend();
/* Disable all interrupt sources on openpic */
pic_prio = openpic_get_priority();
openpic_set_priority(0xf);
@ -343,6 +347,8 @@ static int __pmac pmu_set_cpu_speed(int low_speed)
debug_calc_bogomips();
#endif
pmu_resume();
preempt_enable();
return 0;
@ -355,7 +361,7 @@ static int __pmac do_set_cpu_speed(int speed_mode, int notify)
static unsigned long prev_l3cr;
freqs.old = cur_freq;
freqs.new = (speed_mode == PMAC_CPU_HIGH_SPEED) ? hi_freq : low_freq;
freqs.new = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq;
freqs.cpu = smp_processor_id();
if (freqs.old == freqs.new)
@ -363,7 +369,7 @@ static int __pmac do_set_cpu_speed(int speed_mode, int notify)
if (notify)
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
if (speed_mode == PMAC_CPU_LOW_SPEED &&
if (speed_mode == CPUFREQ_LOW &&
cpu_has_feature(CPU_FTR_L3CR)) {
l3cr = _get_L3CR();
if (l3cr & L3CR_L3E) {
@ -371,8 +377,8 @@ static int __pmac do_set_cpu_speed(int speed_mode, int notify)
_set_L3CR(0);
}
}
set_speed_proc(speed_mode == PMAC_CPU_LOW_SPEED);
if (speed_mode == PMAC_CPU_HIGH_SPEED &&
set_speed_proc(speed_mode == CPUFREQ_LOW);
if (speed_mode == CPUFREQ_HIGH &&
cpu_has_feature(CPU_FTR_L3CR)) {
l3cr = _get_L3CR();
if ((prev_l3cr & L3CR_L3E) && l3cr != prev_l3cr)
@ -380,7 +386,7 @@ static int __pmac do_set_cpu_speed(int speed_mode, int notify)
}
if (notify)
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
cur_freq = (speed_mode == PMAC_CPU_HIGH_SPEED) ? hi_freq : low_freq;
cur_freq = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq;
return 0;
}
@ -423,7 +429,8 @@ static int __pmac pmac_cpufreq_cpu_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cur = cur_freq;
return cpufreq_frequency_table_cpuinfo(policy, &pmac_cpu_freqs[0]);
cpufreq_frequency_table_get_attr(pmac_cpu_freqs, policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy, pmac_cpu_freqs);
}
static u32 __pmac read_gpio(struct device_node *np)
@ -457,7 +464,7 @@ static int __pmac pmac_cpufreq_suspend(struct cpufreq_policy *policy, u32 state)
no_schedule = 1;
sleep_freq = cur_freq;
if (cur_freq == low_freq)
do_set_cpu_speed(PMAC_CPU_HIGH_SPEED, 0);
do_set_cpu_speed(CPUFREQ_HIGH, 0);
return 0;
}
@ -473,8 +480,8 @@ static int __pmac pmac_cpufreq_resume(struct cpufreq_policy *policy)
* is that we force a switch to whatever it was, which is
* probably high speed due to our suspend() routine
*/
do_set_cpu_speed(sleep_freq == low_freq ? PMAC_CPU_LOW_SPEED
: PMAC_CPU_HIGH_SPEED, 0);
do_set_cpu_speed(sleep_freq == low_freq ?
CPUFREQ_LOW : CPUFREQ_HIGH, 0);
no_schedule = 0;
return 0;
@ -488,6 +495,7 @@ static struct cpufreq_driver pmac_cpufreq_driver = {
.suspend = pmac_cpufreq_suspend,
.resume = pmac_cpufreq_resume,
.flags = CPUFREQ_PM_NO_WARN,
.attr = pmac_cpu_freqs_attr,
.name = "powermac",
.owner = THIS_MODULE,
};

41
arch/ppc/platforms/pq2ads.h
View File

@ -49,10 +49,10 @@
/* PCI interrupt controller */
#define PCI_INT_STAT_REG 0xF8200000
#define PCI_INT_MASK_REG 0xF8200004
#define PIRQA (NR_SIU_INTS + 0)
#define PIRQB (NR_SIU_INTS + 1)
#define PIRQC (NR_SIU_INTS + 2)
#define PIRQD (NR_SIU_INTS + 3)
#define PIRQA (NR_CPM_INTS + 0)
#define PIRQB (NR_CPM_INTS + 1)
#define PIRQC (NR_CPM_INTS + 2)
#define PIRQD (NR_CPM_INTS + 3)
/*
* PCI memory map definitions for MPC8266ADS-PCI.
@ -68,28 +68,23 @@
* 0x00000000-0x1FFFFFFF 0x00000000-0x1FFFFFFF MPC8266 local memory
*/
/* window for a PCI master to access MPC8266 memory */
#define PCI_SLV_MEM_LOCAL 0x00000000 /* Local base */
#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */
/* All the other PCI memory map definitions reside at syslib/m82xx_pci.h
Here we should redefine what is unique for this board */
#define M82xx_PCI_SLAVE_MEM_LOCAL 0x00000000 /* Local base */
#define M82xx_PCI_SLAVE_MEM_BUS 0x00000000 /* PCI base */
#define M82xx_PCI_SLAVE_MEM_SIZE 0x10000000 /* 256 Mb */
/* window for the processor to access PCI memory with prefetching */
#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */
#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */
#define PCI_MSTR_MEM_SIZE 0x20000000 /* 512MB */
#define M82xx_PCI_SLAVE_SEC_WND_SIZE ~(0x40000000 - 1U) /* 2 x 512Mb */
#define M82xx_PCI_SLAVE_SEC_WND_BASE 0x80000000 /* PCI Memory base */
/* window for the processor to access PCI memory without prefetching */
#define PCI_MSTR_MEMIO_LOCAL 0xA0000000 /* Local base */
#define PCI_MSTR_MEMIO_BUS 0xA0000000 /* PCI base */
#define PCI_MSTR_MEMIO_SIZE 0x20000000 /* 512MB */
#if defined(CONFIG_ADS8272)
#define PCI_INT_TO_SIU SIU_INT_IRQ2
#elif defined(CONFIG_PQ2FADS)
#define PCI_INT_TO_SIU SIU_INT_IRQ6
#else
#warning PCI Bridge will be without interrupts support
#endif
/* window for the processor to access PCI I/O */
#define PCI_MSTR_IO_LOCAL 0xF4000000 /* Local base */
#define PCI_MSTR_IO_BUS 0x00000000 /* PCI base */
#define PCI_MSTR_IO_SIZE 0x04000000 /* 64MB */
#define _IO_BASE PCI_MSTR_IO_LOCAL
#define _ISA_MEM_BASE PCI_MSTR_MEMIO_LOCAL
#define PCI_DRAM_OFFSET PCI_SLV_MEM_BUS
#endif /* CONFIG_PCI */
#endif /* __MACH_ADS8260_DEFS */

4
arch/ppc/syslib/Makefile
View File

@ -81,7 +81,7 @@ obj-$(CONFIG_SBC82xx) += todc_time.o
obj-$(CONFIG_SPRUCE) += cpc700_pic.o indirect_pci.o pci_auto.o \
todc_time.o
obj-$(CONFIG_8260) += m8260_setup.o
obj-$(CONFIG_PCI_8260) += m8260_pci.o indirect_pci.o
obj-$(CONFIG_PCI_8260) += m82xx_pci.o indirect_pci.o pci_auto.o
obj-$(CONFIG_8260_PCI9) += m8260_pci_erratum9.o
obj-$(CONFIG_CPM2) += cpm2_common.o cpm2_pic.o
ifeq ($(CONFIG_PPC_GEN550),y)
@ -97,7 +97,7 @@ obj-$(CONFIG_MPC10X_OPENPIC) += open_pic.o
obj-$(CONFIG_40x) += dcr.o
obj-$(CONFIG_BOOKE) += dcr.o
obj-$(CONFIG_85xx) += open_pic.o ppc85xx_common.o ppc85xx_setup.o \
ppc_sys.o mpc85xx_sys.o \
ppc_sys.o i8259.o mpc85xx_sys.o \
mpc85xx_devices.o
ifeq ($(CONFIG_85xx),y)
obj-$(CONFIG_PCI) += indirect_pci.o pci_auto.o

2
arch/ppc/syslib/ipic.c
View File

@ -479,7 +479,7 @@ void __init ipic_init(phys_addr_t phys_addr,
temp = 0;
for (i = 0 ; i < senses_count ; i++) {
if ((senses[i] & IRQ_SENSE_MASK) == IRQ_SENSE_EDGE) {
temp |= 1 << (16 - i);
temp |= 1 << (15 - i);
if (i != 0)
irq_desc[i + irq_offset + MPC83xx_IRQ_EXT1 - 1].status = 0;
else

193
arch/ppc/syslib/m8260_pci.c
View File

@ -1,193 +0,0 @@
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2004 Red Hat, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/immap_cpm2.h>
#include <asm/mpc8260.h>
#include "m8260_pci.h"
/* PCI bus configuration registers.
*/
static void __init m8260_setup_pci(struct pci_controller *hose)
{
volatile cpm2_map_t *immap = cpm2_immr;
unsigned long pocmr;
u16 tempShort;
#ifndef CONFIG_ATC /* already done in U-Boot */
/*
* Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
* and local bus for PCI (SIUMCR [LBPC]).
*/
immap->im_siu_conf.siu_82xx.sc_siumcr = 0x00640000;
#endif
/* Make PCI lowest priority */
/* Each 4 bits is a device bus request and the MS 4bits
is highest priority */
/* Bus 4bit value
--- ----------
CPM high 0b0000
CPM middle 0b0001
CPM low 0b0010
PCI reguest 0b0011
Reserved 0b0100
Reserved 0b0101
Internal Core 0b0110
External Master 1 0b0111
External Master 2 0b1000
External Master 3 0b1001
The rest are reserved */
immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x61207893;
/* Park bus on core while modifying PCI Bus accesses */
immap->im_siu_conf.siu_82xx.sc_ppc_acr = 0x6;
/*
* Set up master window that allows the CPU to access PCI space. This
* window is set up using the first SIU PCIBR registers.
*/
immap->im_memctl.memc_pcimsk0 = MPC826x_PCI_MASK;
immap->im_memctl.memc_pcibr0 = MPC826x_PCI_BASE | PCIBR_ENABLE;
/* Disable machine check on no response or target abort */
immap->im_pci.pci_emr = cpu_to_le32(0x1fe7);
/* Release PCI RST (by default the PCI RST signal is held low) */
immap->im_pci.pci_gcr = cpu_to_le32(PCIGCR_PCI_BUS_EN);
/* give it some time */
mdelay(1);
/*
* Set up master window that allows the CPU to access PCI Memory (prefetch)
* space. This window is set up using the first set of Outbound ATU registers.
*/
immap->im_pci.pci_potar0 = cpu_to_le32(MPC826x_PCI_LOWER_MEM >> 12);
immap->im_pci.pci_pobar0 = cpu_to_le32((MPC826x_PCI_LOWER_MEM - MPC826x_PCI_MEM_OFFSET) >> 12);
pocmr = ((MPC826x_PCI_UPPER_MEM - MPC826x_PCI_LOWER_MEM) >> 12) ^ 0xfffff;
immap->im_pci.pci_pocmr0 = cpu_to_le32(pocmr | POCMR_ENABLE | POCMR_PREFETCH_EN);
/*
* Set up master window that allows the CPU to access PCI Memory (non-prefetch)
* space. This window is set up using the second set of Outbound ATU registers.
*/
immap->im_pci.pci_potar1 = cpu_to_le32(MPC826x_PCI_LOWER_MMIO >> 12);
immap->im_pci.pci_pobar1 = cpu_to_le32((MPC826x_PCI_LOWER_MMIO - MPC826x_PCI_MMIO_OFFSET) >> 12);
pocmr = ((MPC826x_PCI_UPPER_MMIO - MPC826x_PCI_LOWER_MMIO) >> 12) ^ 0xfffff;
immap->im_pci.pci_pocmr1 = cpu_to_le32(pocmr | POCMR_ENABLE);
/*
* Set up master window that allows the CPU to access PCI IO space. This window
* is set up using the third set of Outbound ATU registers.
*/
immap->im_pci.pci_potar2 = cpu_to_le32(MPC826x_PCI_IO_BASE >> 12);
immap->im_pci.pci_pobar2 = cpu_to_le32(MPC826x_PCI_LOWER_IO >> 12);
pocmr = ((MPC826x_PCI_UPPER_IO - MPC826x_PCI_LOWER_IO) >> 12) ^ 0xfffff;
immap->im_pci.pci_pocmr2 = cpu_to_le32(pocmr | POCMR_ENABLE | POCMR_PCI_IO);
/*
* Set up slave window that allows PCI masters to access MPC826x local memory.
* This window is set up using the first set of Inbound ATU registers
*/
immap->im_pci.pci_pitar0 = cpu_to_le32(MPC826x_PCI_SLAVE_MEM_LOCAL >> 12);
immap->im_pci.pci_pibar0 = cpu_to_le32(MPC826x_PCI_SLAVE_MEM_BUS >> 12);
pocmr = ((MPC826x_PCI_SLAVE_MEM_SIZE-1) >> 12) ^ 0xfffff;
immap->im_pci.pci_picmr0 = cpu_to_le32(pocmr | PICMR_ENABLE | PICMR_PREFETCH_EN);
/* See above for description - puts PCI request as highest priority */
immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x03124567;
/* Park the bus on the PCI */
immap->im_siu_conf.siu_82xx.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
/* Host mode - specify the bridge as a host-PCI bridge */
early_write_config_word(hose, 0, 0, PCI_CLASS_DEVICE, PCI_CLASS_BRIDGE_HOST);
/* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */
early_read_config_word(hose, 0, 0, PCI_COMMAND, &tempShort);
early_write_config_word(hose, 0, 0, PCI_COMMAND,
tempShort | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
}
void __init m8260_find_bridges(void)
{
extern int pci_assign_all_busses;
struct pci_controller * hose;
pci_assign_all_busses = 1;
hose = pcibios_alloc_controller();
if (!hose)
return;
ppc_md.pci_swizzle = common_swizzle;
hose->first_busno = 0;
hose->bus_offset = 0;
hose->last_busno = 0xff;
setup_m8260_indirect_pci(hose,
(unsigned long)&cpm2_immr->im_pci.pci_cfg_addr,
(unsigned long)&cpm2_immr->im_pci.pci_cfg_data);
m8260_setup_pci(hose);
hose->pci_mem_offset = MPC826x_PCI_MEM_OFFSET;
hose->io_base_virt = ioremap(MPC826x_PCI_IO_BASE,
MPC826x_PCI_IO_SIZE);
isa_io_base = (unsigned long) hose->io_base_virt;
/* setup resources */
pci_init_resource(&hose->mem_resources[0],
MPC826x_PCI_LOWER_MEM,
MPC826x_PCI_UPPER_MEM,
IORESOURCE_MEM|IORESOURCE_PREFETCH, "PCI prefetchable memory");
pci_init_resource(&hose->mem_resources[1],
MPC826x_PCI_LOWER_MMIO,
MPC826x_PCI_UPPER_MMIO,
IORESOURCE_MEM, "PCI memory");
pci_init_resource(&hose->io_resource,
MPC826x_PCI_LOWER_IO,
MPC826x_PCI_UPPER_IO,
IORESOURCE_IO, "PCI I/O");
}

76
arch/ppc/syslib/m8260_pci.h
View File

@ -1,76 +0,0 @@
#ifndef _PPC_KERNEL_M8260_PCI_H
#define _PPC_KERNEL_M8260_PCI_H
#include <asm/m8260_pci.h>
/*
* Local->PCI map (from CPU) controlled by
* MPC826x master window
*
* 0x80000000 - 0xBFFFFFFF Total CPU2PCI space PCIBR0
*
* 0x80000000 - 0x9FFFFFFF PCI Mem with prefetch (Outbound ATU #1)
* 0xA0000000 - 0xAFFFFFFF PCI Mem w/o prefetch (Outbound ATU #2)
* 0xB0000000 - 0xB0FFFFFF 32-bit PCI IO (Outbound ATU #3)
*
* PCI->Local map (from PCI)
* MPC826x slave window controlled by
*
* 0x00000000 - 0x07FFFFFF MPC826x local memory (Inbound ATU #1)
*/
/*
* Slave window that allows PCI masters to access MPC826x local memory.
* This window is set up using the first set of Inbound ATU registers
*/
#ifndef MPC826x_PCI_SLAVE_MEM_LOCAL
#define MPC826x_PCI_SLAVE_MEM_LOCAL (((struct bd_info *)__res)->bi_memstart)
#define MPC826x_PCI_SLAVE_MEM_BUS (((struct bd_info *)__res)->bi_memstart)
#define MPC826x_PCI_SLAVE_MEM_SIZE (((struct bd_info *)__res)->bi_memsize)
#endif
/*
* This is the window that allows the CPU to access PCI address space.
* It will be setup with the SIU PCIBR0 register. All three PCI master
* windows, which allow the CPU to access PCI prefetch, non prefetch,
* and IO space (see below), must all fit within this window.
*/
#ifndef MPC826x_PCI_BASE
#define MPC826x_PCI_BASE 0x80000000
#define MPC826x_PCI_MASK 0xc0000000
#endif
#ifndef MPC826x_PCI_LOWER_MEM
#define MPC826x_PCI_LOWER_MEM 0x80000000
#define MPC826x_PCI_UPPER_MEM 0x9fffffff
#define MPC826x_PCI_MEM_OFFSET 0x00000000
#endif
#ifndef MPC826x_PCI_LOWER_MMIO
#define MPC826x_PCI_LOWER_MMIO 0xa0000000
#define MPC826x_PCI_UPPER_MMIO 0xafffffff
#define MPC826x_PCI_MMIO_OFFSET 0x00000000
#endif
#ifndef MPC826x_PCI_LOWER_IO
#define MPC826x_PCI_LOWER_IO 0x00000000
#define MPC826x_PCI_UPPER_IO 0x00ffffff
#define MPC826x_PCI_IO_BASE 0xb0000000
#define MPC826x_PCI_IO_SIZE 0x01000000
#endif
#ifndef _IO_BASE
#define _IO_BASE isa_io_base
#endif
#ifdef CONFIG_8260_PCI9
struct pci_controller;
extern void setup_m8260_indirect_pci(struct pci_controller* hose,
u32 cfg_addr, u32 cfg_data);
#else
#define setup_m8260_indirect_pci setup_indirect_pci
#endif
#endif /* _PPC_KERNEL_M8260_PCI_H */

10
arch/ppc/syslib/m8260_pci_erratum9.c
View File

@ -31,7 +31,7 @@
#include <asm/immap_cpm2.h>
#include <asm/cpm2.h>
#include "m8260_pci.h"
#include "m82xx_pci.h"
#ifdef CONFIG_8260_PCI9
/*#include <asm/mpc8260_pci9.h>*/ /* included in asm/io.h */
@ -248,11 +248,11 @@ EXPORT_SYMBOL(idma_pci9_read_le);
static inline int is_pci_mem(unsigned long addr)
{
if (addr >= MPC826x_PCI_LOWER_MMIO &&
addr <= MPC826x_PCI_UPPER_MMIO)
if (addr >= M82xx_PCI_LOWER_MMIO &&
addr <= M82xx_PCI_UPPER_MMIO)
return 1;
if (addr >= MPC826x_PCI_LOWER_MEM &&
addr <= MPC826x_PCI_UPPER_MEM)
if (addr >= M82xx_PCI_LOWER_MEM &&
addr <= M82xx_PCI_UPPER_MEM)
return 1;
return 0;
}

11
arch/ppc/syslib/m8260_setup.c
View File

@ -34,7 +34,8 @@
unsigned char __res[sizeof(bd_t)];
extern void cpm2_reset(void);
extern void m8260_find_bridges(void);
extern void pq2_find_bridges(void);
extern void pq2pci_init_irq(void);
extern void idma_pci9_init(void);
/* Place-holder for board-specific init */
@ -56,7 +57,7 @@ m8260_setup_arch(void)
idma_pci9_init();
#endif
#ifdef CONFIG_PCI_8260
m8260_find_bridges();
pq2_find_bridges();
#endif
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
@ -173,6 +174,12 @@ m8260_init_IRQ(void)
* in case the boot rom changed something on us.
*/
cpm2_immr->im_intctl.ic_siprr = 0x05309770;
#if defined(CONFIG_PCI) && (defined(CONFIG_ADS8272) || defined(CONFIG_PQ2FADS))
/* Initialize stuff for the 82xx CPLD IC and install demux */
pq2pci_init_irq();
#endif
}
/*

383
arch/ppc/syslib/m82xx_pci.c Normal file
View File

@ -0,0 +1,383 @@
/*
*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2004 Red Hat, Inc.
*
* 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/immap_cpm2.h>
#include <asm/mpc8260.h>
#include <asm/cpm2.h>
#include "m82xx_pci.h"
/*
* Interrupt routing
*/
static inline int
pq2pci_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
{
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{ PIRQA, PIRQB, PIRQC, PIRQD }, /* IDSEL 22 - PCI slot 0 */
{ PIRQD, PIRQA, PIRQB, PIRQC }, /* IDSEL 23 - PCI slot 1 */
{ PIRQC, PIRQD, PIRQA, PIRQB }, /* IDSEL 24 - PCI slot 2 */
};
const long min_idsel = 22, max_idsel = 24, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
}
static void
pq2pci_mask_irq(unsigned int irq)
{
int bit = irq - NR_CPM_INTS;
*(volatile unsigned long *) PCI_INT_MASK_REG |= (1 << (31 - bit));
return;
}
static void
pq2pci_unmask_irq(unsigned int irq)
{
int bit = irq - NR_CPM_INTS;
*(volatile unsigned long *) PCI_INT_MASK_REG &= ~(1 << (31 - bit));
return;
}
static void
pq2pci_mask_and_ack(unsigned int irq)
{
int bit = irq - NR_CPM_INTS;
*(volatile unsigned long *) PCI_INT_MASK_REG |= (1 << (31 - bit));
return;
}
static void
pq2pci_end_irq(unsigned int irq)
{
int bit = irq - NR_CPM_INTS;
*(volatile unsigned long *) PCI_INT_MASK_REG &= ~(1 << (31 - bit));
return;
}
struct hw_interrupt_type pq2pci_ic = {
"PQ2 PCI",
NULL,
NULL,
pq2pci_unmask_irq,
pq2pci_mask_irq,
pq2pci_mask_and_ack,
pq2pci_end_irq,
0
};
static irqreturn_t
pq2pci_irq_demux(int irq, void *dev_id, struct pt_regs *regs)
{
unsigned long stat, mask, pend;
int bit;
for(;;) {
stat = *(volatile unsigned long *) PCI_INT_STAT_REG;
mask = *(volatile unsigned long *) PCI_INT_MASK_REG;
pend = stat & ~mask & 0xf0000000;
if (!pend)
break;
for (bit = 0; pend != 0; ++bit, pend <<= 1) {
if (pend & 0x80000000)
__do_IRQ(NR_CPM_INTS + bit, regs);
}
}
return IRQ_HANDLED;
}
static struct irqaction pq2pci_irqaction = {
.handler = pq2pci_irq_demux,
.flags = SA_INTERRUPT,
.mask = CPU_MASK_NONE,
.name = "PQ2 PCI cascade",
};
void
pq2pci_init_irq(void)
{
int irq;
volatile cpm2_map_t *immap = cpm2_immr;
#if defined CONFIG_ADS8272
/* configure chip select for PCI interrupt controller */
immap->im_memctl.memc_br3 = PCI_INT_STAT_REG | 0x00001801;
immap->im_memctl.memc_or3 = 0xffff8010;
#elif defined CONFIG_PQ2FADS
immap->im_memctl.memc_br8 = PCI_INT_STAT_REG | 0x00001801;
immap->im_memctl.memc_or8 = 0xffff8010;
#endif
for (irq = NR_CPM_INTS; irq < NR_CPM_INTS + 4; irq++)
irq_desc[irq].handler = &pq2pci_ic;
/* make PCI IRQ level sensitive */
immap->im_intctl.ic_siexr &=
~(1 << (14 - (PCI_INT_TO_SIU - SIU_INT_IRQ1)));
/* mask all PCI interrupts */
*(volatile unsigned long *) PCI_INT_MASK_REG |= 0xfff00000;
/* install the demultiplexer for the PCI cascade interrupt */
setup_irq(PCI_INT_TO_SIU, &pq2pci_irqaction);
return;
}
static int
pq2pci_exclude_device(u_char bus, u_char devfn)
{
return PCIBIOS_SUCCESSFUL;
}
/* PCI bus configuration registers.
*/
static void
pq2ads_setup_pci(struct pci_controller *hose)
{
__u32 val;
volatile cpm2_map_t *immap = cpm2_immr;
bd_t* binfo = (bd_t*) __res;
u32 sccr = immap->im_clkrst.car_sccr;
uint pci_div,freq,time;
/* PCI int lowest prio */
/* Each 4 bits is a device bus request and the MS 4bits
is highest priority */
/* Bus 4bit value
--- ----------
CPM high 0b0000
CPM middle 0b0001
CPM low 0b0010
PCI reguest 0b0011
Reserved 0b0100
Reserved 0b0101
Internal Core 0b0110
External Master 1 0b0111
External Master 2 0b1000
External Master 3 0b1001
The rest are reserved
*/
immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x61207893;
/* park bus on core */
immap->im_siu_conf.siu_82xx.sc_ppc_acr = PPC_ACR_BUS_PARK_CORE;
/*
* Set up master windows that allow the CPU to access PCI space. These
* windows are set up using the two SIU PCIBR registers.
*/
immap->im_memctl.memc_pcimsk0 = M82xx_PCI_PRIM_WND_SIZE;
immap->im_memctl.memc_pcibr0 = M82xx_PCI_PRIM_WND_BASE | PCIBR_ENABLE;
#ifdef M82xx_PCI_SEC_WND_SIZE
immap->im_memctl.memc_pcimsk1 = M82xx_PCI_SEC_WND_SIZE;
immap->im_memctl.memc_pcibr1 = M82xx_PCI_SEC_WND_BASE | PCIBR_ENABLE;
#endif
#if defined CONFIG_ADS8272
immap->im_siu_conf.siu_82xx.sc_siumcr =
(immap->im_siu_conf.siu_82xx.sc_siumcr &
~(SIUMCR_BBD | SIUMCR_ESE | SIUMCR_PBSE |
SIUMCR_CDIS | SIUMCR_DPPC11 | SIUMCR_L2CPC11 |
SIUMCR_LBPC11 | SIUMCR_APPC11 |
SIUMCR_CS10PC11 | SIUMCR_BCTLC11 | SIUMCR_MMR11)) |
SIUMCR_DPPC11 | SIUMCR_L2CPC01 | SIUMCR_LBPC00 |
SIUMCR_APPC10 | SIUMCR_CS10PC00 |
SIUMCR_BCTLC00 | SIUMCR_MMR11 ;
#elif defined CONFIG_PQ2FADS
/*
* Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
* and local bus for PCI (SIUMCR [LBPC]).
*/
immap->im_siu_conf.siu_82xx.sc_siumcr = (immap->im_siu_conf.sc_siumcr &
~(SIUMCR_L2PC11 | SIUMCR_LBPC11 | SIUMCR_CS10PC11 | SIUMCR_APPC11) |
SIUMCR_BBD | SIUMCR_LBPC01 | SIUMCR_DPPC11 | SIUMCR_APPC10;
#endif
/* Enable PCI */
immap->im_pci.pci_gcr = cpu_to_le32(PCIGCR_PCI_BUS_EN);
pci_div = ( (sccr & SCCR_PCI_MODCK) ? 2 : 1) *
( ( (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT) + 1);
freq = (uint)((2*binfo->bi_cpmfreq)/(pci_div));
time = (int)666666/freq;
/* due to PCI Local Bus spec, some devices needs to wait such a long
time after RST deassertion. More specifically, 0.508s for 66MHz & twice more for 33 */
printk("%s: The PCI bus is %d Mhz.\nWaiting %s after deasserting RST...\n",__FILE__,freq,
(time==1) ? "0.5 seconds":"1 second" );
{
int i;
for(i=0;i<(500*time);i++)
udelay(1000);
}
/* setup ATU registers */
immap->im_pci.pci_pocmr0 = cpu_to_le32(POCMR_ENABLE | POCMR_PCI_IO |
((~(M82xx_PCI_IO_SIZE - 1U)) >> POTA_ADDR_SHIFT));
immap->im_pci.pci_potar0 = cpu_to_le32(M82xx_PCI_LOWER_IO >> POTA_ADDR_SHIFT);
immap->im_pci.pci_pobar0 = cpu_to_le32(M82xx_PCI_IO_BASE >> POTA_ADDR_SHIFT);
/* Set-up non-prefetchable window */
immap->im_pci.pci_pocmr1 = cpu_to_le32(POCMR_ENABLE | ((~(M82xx_PCI_MMIO_SIZE-1U)) >> POTA_ADDR_SHIFT));
immap->im_pci.pci_potar1 = cpu_to_le32(M82xx_PCI_LOWER_MMIO >> POTA_ADDR_SHIFT);
immap->im_pci.pci_pobar1 = cpu_to_le32((M82xx_PCI_LOWER_MMIO - M82xx_PCI_MMIO_OFFSET) >> POTA_ADDR_SHIFT);
/* Set-up prefetchable window */
immap->im_pci.pci_pocmr2 = cpu_to_le32(POCMR_ENABLE |POCMR_PREFETCH_EN |
(~(M82xx_PCI_MEM_SIZE-1U) >> POTA_ADDR_SHIFT));
immap->im_pci.pci_potar2 = cpu_to_le32(M82xx_PCI_LOWER_MEM >> POTA_ADDR_SHIFT);
immap->im_pci.pci_pobar2 = cpu_to_le32((M82xx_PCI_LOWER_MEM - M82xx_PCI_MEM_OFFSET) >> POTA_ADDR_SHIFT);
/* Inbound transactions from PCI memory space */
immap->im_pci.pci_picmr0 = cpu_to_le32(PICMR_ENABLE | PICMR_PREFETCH_EN |
((~(M82xx_PCI_SLAVE_MEM_SIZE-1U)) >> PITA_ADDR_SHIFT));
immap->im_pci.pci_pibar0 = cpu_to_le32(M82xx_PCI_SLAVE_MEM_BUS >> PITA_ADDR_SHIFT);
immap->im_pci.pci_pitar0 = cpu_to_le32(M82xx_PCI_SLAVE_MEM_LOCAL>> PITA_ADDR_SHIFT);
#if defined CONFIG_ADS8272
/* PCI int highest prio */
immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x01236745;
#elif defined CONFIG_PQ2FADS
immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x03124567;
#endif
/* park bus on PCI */
immap->im_siu_conf.siu_82xx.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
/* Enable bus mastering and inbound memory transactions */
early_read_config_dword(hose, hose->first_busno, 0, PCI_COMMAND, &val);
val &= 0xffff0000;
val |= PCI_COMMAND_MEMORY|PCI_COMMAND_MASTER;
early_write_config_dword(hose, hose->first_busno, 0, PCI_COMMAND, val);
}
void __init pq2_find_bridges(void)
{
extern int pci_assign_all_busses;
struct pci_controller * hose;
int host_bridge;
pci_assign_all_busses = 1;
hose = pcibios_alloc_controller();
if (!hose)
return;
ppc_md.pci_swizzle = common_swizzle;
hose->first_busno = 0;
hose->bus_offset = 0;
hose->last_busno = 0xff;
#ifdef CONFIG_ADS8272
hose->set_cfg_type = 1;
#endif
setup_m8260_indirect_pci(hose,
(unsigned long)&cpm2_immr->im_pci.pci_cfg_addr,
(unsigned long)&cpm2_immr->im_pci.pci_cfg_data);
/* Make sure it is a supported bridge */
early_read_config_dword(hose,
0,
PCI_DEVFN(0,0),
PCI_VENDOR_ID,
&host_bridge);
switch (host_bridge) {
case PCI_DEVICE_ID_MPC8265:
break;
case PCI_DEVICE_ID_MPC8272:
break;
default:
printk("Attempting to use unrecognized host bridge ID"
" 0x%08x.\n", host_bridge);
break;
}
pq2ads_setup_pci(hose);
hose->io_space.start = M82xx_PCI_LOWER_IO;
hose->io_space.end = M82xx_PCI_UPPER_IO;
hose->mem_space.start = M82xx_PCI_LOWER_MEM;
hose->mem_space.end = M82xx_PCI_UPPER_MMIO;
hose->pci_mem_offset = M82xx_PCI_MEM_OFFSET;
isa_io_base =
(unsigned long) ioremap(M82xx_PCI_IO_BASE,
M82xx_PCI_IO_SIZE);
hose->io_base_virt = (void *) isa_io_base;
/* setup resources */
pci_init_resource(&hose->mem_resources[0],
M82xx_PCI_LOWER_MEM,
M82xx_PCI_UPPER_MEM,
IORESOURCE_MEM|IORESOURCE_PREFETCH, "PCI prefetchable memory");
pci_init_resource(&hose->mem_resources[1],
M82xx_PCI_LOWER_MMIO,
M82xx_PCI_UPPER_MMIO,
IORESOURCE_MEM, "PCI memory");
pci_init_resource(&hose->io_resource,
M82xx_PCI_LOWER_IO,
M82xx_PCI_UPPER_IO,
IORESOURCE_IO | 1, "PCI I/O");
ppc_md.pci_exclude_device = pq2pci_exclude_device;
hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
ppc_md.pci_map_irq = pq2pci_map_irq;
ppc_md.pcibios_fixup = NULL;
ppc_md.pcibios_fixup_bus = NULL;
}

92
arch/ppc/syslib/m82xx_pci.h Normal file
View File

@ -0,0 +1,92 @@
#ifndef _PPC_KERNEL_M82XX_PCI_H
#define _PPC_KERNEL_M82XX_PCI_H
#include <asm/m8260_pci.h>
/*
* Local->PCI map (from CPU) controlled by
* MPC826x master window
*
* 0xF6000000 - 0xF7FFFFFF IO space
* 0x80000000 - 0xBFFFFFFF CPU2PCI memory space PCIBR0
*
* 0x80000000 - 0x9FFFFFFF PCI Mem with prefetch (Outbound ATU #1)
* 0xA0000000 - 0xBFFFFFFF PCI Mem w/o prefetch (Outbound ATU #2)
* 0xF6000000 - 0xF7FFFFFF 32-bit PCI IO (Outbound ATU #3)
*
* PCI->Local map (from PCI)
* MPC826x slave window controlled by
*
* 0x00000000 - 0x07FFFFFF MPC826x local memory (Inbound ATU #1)
*/
/*
* Slave window that allows PCI masters to access MPC826x local memory.
* This window is set up using the first set of Inbound ATU registers
*/
#ifndef M82xx_PCI_SLAVE_MEM_LOCAL
#define M82xx_PCI_SLAVE_MEM_LOCAL (((struct bd_info *)__res)->bi_memstart)
#define M82xx_PCI_SLAVE_MEM_BUS (((struct bd_info *)__res)->bi_memstart)
#define M82xx_PCI_SLAVE_MEM_SIZE (((struct bd_info *)__res)->bi_memsize)
#endif
/*
* This is the window that allows the CPU to access PCI address space.
* It will be setup with the SIU PCIBR0 register. All three PCI master
* windows, which allow the CPU to access PCI prefetch, non prefetch,
* and IO space (see below), must all fit within this window.
*/
#ifndef M82xx_PCI_LOWER_MEM
#define M82xx_PCI_LOWER_MEM 0x80000000
#define M82xx_PCI_UPPER_MEM 0x9fffffff
#define M82xx_PCI_MEM_OFFSET 0x00000000
#define M82xx_PCI_MEM_SIZE 0x20000000
#endif
#ifndef M82xx_PCI_LOWER_MMIO
#define M82xx_PCI_LOWER_MMIO 0xa0000000
#define M82xx_PCI_UPPER_MMIO 0xafffffff
#define M82xx_PCI_MMIO_OFFSET 0x00000000
#define M82xx_PCI_MMIO_SIZE 0x20000000
#endif
#ifndef M82xx_PCI_LOWER_IO
#define M82xx_PCI_LOWER_IO 0x00000000
#define M82xx_PCI_UPPER_IO 0x01ffffff
#define M82xx_PCI_IO_BASE 0xf6000000
#define M82xx_PCI_IO_SIZE 0x02000000
#endif
#ifndef M82xx_PCI_PRIM_WND_SIZE
#define M82xx_PCI_PRIM_WND_SIZE ~(M82xx_PCI_IO_SIZE - 1U)
#define M82xx_PCI_PRIM_WND_BASE (M82xx_PCI_IO_BASE)
#endif
#ifndef M82xx_PCI_SEC_WND_SIZE
#define M82xx_PCI_SEC_WND_SIZE ~(M82xx_PCI_MEM_SIZE + M82xx_PCI_MMIO_SIZE - 1U)
#define M82xx_PCI_SEC_WND_BASE (M82xx_PCI_LOWER_MEM)
#endif
#ifndef POTA_ADDR_SHIFT
#define POTA_ADDR_SHIFT 12
#endif
#ifndef PITA_ADDR_SHIFT
#define PITA_ADDR_SHIFT 12
#endif
#ifndef _IO_BASE
#define _IO_BASE isa_io_base
#endif
#ifdef CONFIG_8260_PCI9
struct pci_controller;
extern void setup_m8260_indirect_pci(struct pci_controller* hose,
u32 cfg_addr, u32 cfg_data);
#else
#define setup_m8260_indirect_pci setup_indirect_pci
#endif
#endif /* _PPC_KERNEL_M8260_PCI_H */

1
arch/ppc/syslib/mpc83xx_devices.c
View File

@ -61,6 +61,7 @@ static struct plat_serial8250_port serial_platform_data[] = {
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
},
{ },
};
struct platform_device ppc_sys_platform_devices[] = {

1
arch/ppc/syslib/mpc85xx_devices.c
View File

@ -61,6 +61,7 @@ static struct plat_serial8250_port serial_platform_data[] = {
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ,
},
{ },
};
struct platform_device ppc_sys_platform_devices[] = {

6
arch/ppc/syslib/open_pic.c
View File

@ -275,7 +275,7 @@ static void __init openpic_enable_sie(void)
}
#endif
#if defined(CONFIG_EPIC_SERIAL_MODE) || defined(CONFIG_PM)
#if defined(CONFIG_EPIC_SERIAL_MODE)
static void openpic_reset(void)
{
openpic_setfield(&OpenPIC->Global.Global_Configuration0,
@ -557,12 +557,10 @@ static void __init openpic_initipi(u_int ipi, u_int pri, u_int vec)
*/
void openpic_cause_IPI(u_int ipi, cpumask_t cpumask)
{
cpumask_t phys;
DECL_THIS_CPU;
CHECK_THIS_CPU;
check_arg_ipi(ipi);
phys = physmask(cpumask);
openpic_write(&OpenPIC->THIS_CPU.IPI_Dispatch(ipi),
cpus_addr(physmask(cpumask))[0]);
}
@ -995,8 +993,6 @@ int openpic_resume(struct sys_device *sysdev)
return 0;
}
openpic_reset();
/* OpenPIC sometimes seem to need some time to be fully back up... */
do {
openpic_set_spurious(OPENPIC_VEC_SPURIOUS);

28
arch/ppc/syslib/ppc83xx_setup.c
View File

@ -29,6 +29,7 @@
#include <asm/mmu.h>
#include <asm/ppc_sys.h>
#include <asm/kgdb.h>
#include <asm/delay.h>
#include <syslib/ppc83xx_setup.h>
@ -117,7 +118,34 @@ mpc83xx_early_serial_map(void)
void
mpc83xx_restart(char *cmd)
{
volatile unsigned char __iomem *reg;
unsigned char tmp;
reg = ioremap(BCSR_PHYS_ADDR, BCSR_SIZE);
local_irq_disable();
/*
* Unlock the BCSR bits so a PRST will update the contents.
* Otherwise the reset asserts but doesn't clear.
*/
tmp = in_8(reg + BCSR_MISC_REG3_OFF);
tmp |= BCSR_MISC_REG3_CNFLOCK; /* low true, high false */
out_8(reg + BCSR_MISC_REG3_OFF, tmp);
/*
* Trigger a reset via a low->high transition of the
* PORESET bit.
*/
tmp = in_8(reg + BCSR_MISC_REG2_OFF);
tmp &= ~BCSR_MISC_REG2_PORESET;
out_8(reg + BCSR_MISC_REG2_OFF, tmp);
udelay(1);
tmp |= BCSR_MISC_REG2_PORESET;
out_8(reg + BCSR_MISC_REG2_OFF, tmp);
for(;;);
}

16
arch/ppc/syslib/ppc85xx_setup.c
View File

@ -132,6 +132,12 @@ mpc85xx_halt(void)
}
#ifdef CONFIG_PCI
#if defined(CONFIG_MPC8555_CDS)
extern void mpc85xx_cds_enable_via(struct pci_controller *hose);
extern void mpc85xx_cds_fixup_via(struct pci_controller *hose);
#endif
static void __init
mpc85xx_setup_pci1(struct pci_controller *hose)
{
@ -302,8 +308,18 @@ mpc85xx_setup_hose(void)
ppc_md.pci_exclude_device = mpc85xx_exclude_device;
#if defined(CONFIG_MPC8555_CDS)
/* Pre pciauto_bus_scan VIA init */
mpc85xx_cds_enable_via(hose_a);
#endif
hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);
#if defined(CONFIG_MPC8555_CDS)
/* Post pciauto_bus_scan VIA fixup */
mpc85xx_cds_fixup_via(hose_a);
#endif
#ifdef CONFIG_85xx_PCI2
hose_b = pcibios_alloc_controller();

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);
}

85
arch/ppc64/kernel/mf.c
View File

@ -1,7 +1,7 @@
/*
* mf.c
* Copyright (C) 2001 Troy D. Armstrong IBM Corporation
* Copyright (C) 2004 Stephen Rothwell IBM Corporation
* Copyright (C) 2004-2005 Stephen Rothwell IBM Corporation
*
* This modules exists as an interface between a Linux secondary partition
* running on an iSeries and the primary partition's Virtual Service
@ -36,10 +36,12 @@
#include <asm/time.h>
#include <asm/uaccess.h>
#include <asm/paca.h>
#include <asm/iSeries/vio.h>
#include <asm/iSeries/mf.h>
#include <asm/iSeries/HvLpConfig.h>
#include <asm/iSeries/ItSpCommArea.h>
#include <asm/iSeries/ItLpQueue.h>
/*
* This is the structure layout for the Machine Facilites LPAR event
@ -696,36 +698,23 @@ static void get_rtc_time_complete(void *token, struct ce_msg_data *ce_msg)
complete(&rtc->com);
}
int mf_get_rtc(struct rtc_time *tm)
static int rtc_set_tm(int rc, u8 *ce_msg, struct rtc_time *tm)
{
struct ce_msg_comp_data ce_complete;
struct rtc_time_data rtc_data;
int rc;
memset(&ce_complete, 0, sizeof(ce_complete));
memset(&rtc_data, 0, sizeof(rtc_data));
init_completion(&rtc_data.com);
ce_complete.handler = &get_rtc_time_complete;
ce_complete.token = &rtc_data;
rc = signal_ce_msg_simple(0x40, &ce_complete);
if (rc)
return rc;
wait_for_completion(&rtc_data.com);
tm->tm_wday = 0;
tm->tm_yday = 0;
tm->tm_isdst = 0;
if (rtc_data.rc) {
if (rc) {
tm->tm_sec = 0;
tm->tm_min = 0;
tm->tm_hour = 0;
tm->tm_mday = 15;
tm->tm_mon = 5;
tm->tm_year = 52;
return rtc_data.rc;
return rc;
}
if ((rtc_data.ce_msg.ce_msg[2] == 0xa9) ||
(rtc_data.ce_msg.ce_msg[2] == 0xaf)) {
if ((ce_msg[2] == 0xa9) ||
(ce_msg[2] == 0xaf)) {
/* TOD clock is not set */
tm->tm_sec = 1;
tm->tm_min = 1;
@ -736,7 +725,6 @@ int mf_get_rtc(struct rtc_time *tm)
mf_set_rtc(tm);
}
{
u8 *ce_msg = rtc_data.ce_msg.ce_msg;
u8 year = ce_msg[5];
u8 sec = ce_msg[6];
u8 min = ce_msg[7];
@ -765,6 +753,63 @@ int mf_get_rtc(struct rtc_time *tm)
return 0;
}
int mf_get_rtc(struct rtc_time *tm)
{
struct ce_msg_comp_data ce_complete;
struct rtc_time_data rtc_data;
int rc;
memset(&ce_complete, 0, sizeof(ce_complete));
memset(&rtc_data, 0, sizeof(rtc_data));
init_completion(&rtc_data.com);
ce_complete.handler = &get_rtc_time_complete;
ce_complete.token = &rtc_data;
rc = signal_ce_msg_simple(0x40, &ce_complete);
if (rc)
return rc;
wait_for_completion(&rtc_data.com);
return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
}
struct boot_rtc_time_data {
int busy;
struct ce_msg_data ce_msg;
int rc;
};
static void get_boot_rtc_time_complete(void *token, struct ce_msg_data *ce_msg)
{
struct boot_rtc_time_data *rtc = token;
memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg));
rtc->rc = 0;
rtc->busy = 0;
}
int mf_get_boot_rtc(struct rtc_time *tm)
{
struct ce_msg_comp_data ce_complete;
struct boot_rtc_time_data rtc_data;
int rc;
memset(&ce_complete, 0, sizeof(ce_complete));
memset(&rtc_data, 0, sizeof(rtc_data));
rtc_data.busy = 1;
ce_complete.handler = &get_boot_rtc_time_complete;
ce_complete.token = &rtc_data;
rc = signal_ce_msg_simple(0x40, &ce_complete);
if (rc)
return rc;
/* We need to poll here as we are not yet taking interrupts */
while (rtc_data.busy) {
extern unsigned long lpevent_count;
struct ItLpQueue *lpq = get_paca()->lpqueue_ptr;
if (lpq && ItLpQueue_isLpIntPending(lpq))
lpevent_count += ItLpQueue_process(lpq, NULL);
}
return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
}
int mf_set_rtc(struct rtc_time *tm)
{
char ce_time[12];

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);
}

28
arch/ppc64/kernel/pmac_smp.c
View File

@ -68,6 +68,7 @@ extern struct smp_ops_t *smp_ops;
static void (*pmac_tb_freeze)(int freeze);
static struct device_node *pmac_tb_clock_chip_host;
static u8 pmac_tb_pulsar_addr;
static DEFINE_SPINLOCK(timebase_lock);
static unsigned long timebase;
@ -106,12 +107,9 @@ static void smp_core99_pulsar_tb_freeze(int freeze)
u8 data;
int rc;
/* Strangely, the device-tree says address is 0xd2, but darwin
* accesses 0xd0 ...
*/
pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_combined);
rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
0xd4 | pmac_low_i2c_read,
pmac_tb_pulsar_addr | pmac_low_i2c_read,
0x2e, &data, 1);
if (rc != 0)
goto bail;
@ -120,7 +118,7 @@ static void smp_core99_pulsar_tb_freeze(int freeze)
pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_stdsub);
rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
0xd4 | pmac_low_i2c_write,
pmac_tb_pulsar_addr | pmac_low_i2c_write,
0x2e, &data, 1);
bail:
if (rc != 0) {
@ -185,6 +183,12 @@ static int __init smp_core99_probe(void)
if (ncpus <= 1)
return 1;
/* HW sync only on these platforms */
if (!machine_is_compatible("PowerMac7,2") &&
!machine_is_compatible("PowerMac7,3") &&
!machine_is_compatible("RackMac3,1"))
goto nohwsync;
/* Look for the clock chip */
for (cc = NULL; (cc = of_find_node_by_name(cc, "i2c-hwclock")) != NULL;) {
struct device_node *p = of_get_parent(cc);
@ -198,11 +202,18 @@ static int __init smp_core99_probe(void)
goto next;
switch (*reg) {
case 0xd2:
pmac_tb_freeze = smp_core99_cypress_tb_freeze;
printk(KERN_INFO "Timebase clock is Cypress chip\n");
if (device_is_compatible(cc, "pulsar-legacy-slewing")) {
pmac_tb_freeze = smp_core99_pulsar_tb_freeze;
pmac_tb_pulsar_addr = 0xd2;
printk(KERN_INFO "Timebase clock is Pulsar chip\n");
} else if (device_is_compatible(cc, "cy28508")) {
pmac_tb_freeze = smp_core99_cypress_tb_freeze;
printk(KERN_INFO "Timebase clock is Cypress chip\n");
}
break;
case 0xd4:
pmac_tb_freeze = smp_core99_pulsar_tb_freeze;
pmac_tb_pulsar_addr = 0xd4;
printk(KERN_INFO "Timebase clock is Pulsar chip\n");
break;
}
@ -210,12 +221,15 @@ static int __init smp_core99_probe(void)
pmac_tb_clock_chip_host = p;
smp_ops->give_timebase = smp_core99_give_timebase;
smp_ops->take_timebase = smp_core99_take_timebase;
of_node_put(cc);
of_node_put(p);
break;
}
next:
of_node_put(p);
}
nohwsync:
mpic_request_ipis();
return ncpus;

60
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);
}
@ -1750,7 +1758,44 @@ static void __init flatten_device_tree(void)
prom_printf("Device tree struct 0x%x -> 0x%x\n",
RELOC(dt_struct_start), RELOC(dt_struct_end));
}
}
static void __init fixup_device_tree(void)
{
unsigned long offset = reloc_offset();
phandle u3, i2c, mpic;
u32 u3_rev;
u32 interrupts[2];
u32 parent;
/* Some G5s have a missing interrupt definition, fix it up here */
u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000"));
if ((long)u3 <= 0)
return;
i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000"));
if ((long)i2c <= 0)
return;
mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000"));
if ((long)mpic <= 0)
return;
/* check if proper rev of u3 */
if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev)) <= 0)
return;
if (u3_rev != 0x35)
return;
/* does it need fixup ? */
if (prom_getproplen(i2c, "interrupts") > 0)
return;
/* interrupt on this revision of u3 is number 0 and level */
interrupts[0] = 0;
interrupts[1] = 1;
prom_setprop(i2c, "interrupts", &interrupts, sizeof(interrupts));
parent = (u32)mpic;
prom_setprop(i2c, "interrupt-parent", &parent, sizeof(parent));
}
static void __init prom_find_boot_cpu(void)
{
@ -1843,6 +1888,12 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long
prom_setprop(_prom->chosen, "linux,platform",
&getprop_rval, sizeof(getprop_rval));
/*
* On pSeries, inform the firmware about our capabilities
*/
if (RELOC(of_platform) & PLATFORM_PSERIES)
prom_send_capabilities();
/*
* On pSeries, copy the CPU hold code
*/
@ -1919,6 +1970,11 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long
PTRRELOC(&prom_tce_alloc_end), sizeof(RELOC(prom_tce_alloc_end)));
}
/*
* Fixup any known bugs in the device-tree
*/
fixup_device_tree();
/*
* Now finally create the flattened device-tree
*/

39
arch/ppc64/kernel/rtc.c
View File

@ -292,47 +292,10 @@ int iSeries_set_rtc_time(struct rtc_time *tm)
void iSeries_get_boot_time(struct rtc_time *tm)
{
unsigned long time;
static unsigned long lastsec = 1;
u32 dataWord1 = *((u32 *)(&xSpCommArea.xBcdTimeAtIplStart));
u32 dataWord2 = *(((u32 *)&(xSpCommArea.xBcdTimeAtIplStart)) + 1);
int year = 1970;
int year1 = ( dataWord1 >> 24 ) & 0x000000FF;
int year2 = ( dataWord1 >> 16 ) & 0x000000FF;
int sec = ( dataWord1 >> 8 ) & 0x000000FF;
int min = dataWord1 & 0x000000FF;
int hour = ( dataWord2 >> 24 ) & 0x000000FF;
int day = ( dataWord2 >> 8 ) & 0x000000FF;
int mon = dataWord2 & 0x000000FF;
if ( piranha_simulator )
return;
BCD_TO_BIN(sec);
BCD_TO_BIN(min);
BCD_TO_BIN(hour);
BCD_TO_BIN(day);
BCD_TO_BIN(mon);
BCD_TO_BIN(year1);
BCD_TO_BIN(year2);
year = year1 * 100 + year2;
time = mktime(year, mon, day, hour, min, sec);
time += ( jiffies / HZ );
/* Now THIS is a nasty hack!
* It ensures that the first two calls get different answers.
* That way the loop in init_time (time.c) will not think
* the clock is stuck.
*/
if ( lastsec ) {
time -= lastsec;
--lastsec;
}
to_tm(time, tm);
tm->tm_year -= 1900;
mf_get_boot_rtc(tm);
tm->tm_mon -= 1;
}
#endif

3
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;
@ -515,6 +513,7 @@ void __init time_init(void)
do_gtod.varp = &do_gtod.vars[0];
do_gtod.var_idx = 0;
do_gtod.varp->tb_orig_stamp = tb_last_stamp;
get_paca()->next_jiffy_update_tb = tb_last_stamp + tb_ticks_per_jiffy;
do_gtod.varp->stamp_xsec = xtime.tv_sec * XSEC_PER_SEC;
do_gtod.tb_ticks_per_sec = tb_ticks_per_sec;
do_gtod.varp->tb_to_xs = tb_to_xs;

221
arch/sparc64/kernel/pci_iommu.c
View File

@ -8,6 +8,7 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <asm/pbm.h>
@ -195,6 +196,34 @@ static iopte_t *alloc_consistent_cluster(struct pci_iommu *iommu, unsigned long
return NULL;
}
static int iommu_alloc_ctx(struct pci_iommu *iommu)
{
int lowest = iommu->ctx_lowest_free;
int sz = IOMMU_NUM_CTXS - lowest;
int n = find_next_zero_bit(iommu->ctx_bitmap, sz, lowest);
if (unlikely(n == sz)) {
n = find_next_zero_bit(iommu->ctx_bitmap, lowest, 1);
if (unlikely(n == lowest)) {
printk(KERN_WARNING "IOMMU: Ran out of contexts.\n");
n = 0;
}
}
if (n)
__set_bit(n, iommu->ctx_bitmap);
return n;
}
static inline void iommu_free_ctx(struct pci_iommu *iommu, int ctx)
{
if (likely(ctx)) {
__clear_bit(ctx, iommu->ctx_bitmap);
if (ctx < iommu->ctx_lowest_free)
iommu->ctx_lowest_free = ctx;
}
}
/* Allocate and map kernel buffer of size SIZE using consistent mode
* DMA for PCI device PDEV. Return non-NULL cpu-side address if
* successful and set *DMA_ADDRP to the PCI side dma address.
@ -235,7 +264,7 @@ void *pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_ad
npages = size >> IO_PAGE_SHIFT;
ctx = 0;
if (iommu->iommu_ctxflush)
ctx = iommu->iommu_cur_ctx++;
ctx = iommu_alloc_ctx(iommu);
first_page = __pa(first_page);
while (npages--) {
iopte_val(*iopte) = (IOPTE_CONSISTENT(ctx) |
@ -316,6 +345,8 @@ void pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_
}
}
iommu_free_ctx(iommu, ctx);
spin_unlock_irqrestore(&iommu->lock, flags);
order = get_order(size);
@ -359,7 +390,7 @@ dma_addr_t pci_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direct
base_paddr = __pa(oaddr & IO_PAGE_MASK);
ctx = 0;
if (iommu->iommu_ctxflush)
ctx = iommu->iommu_cur_ctx++;
ctx = iommu_alloc_ctx(iommu);
if (strbuf->strbuf_enabled)
iopte_protection = IOPTE_STREAMING(ctx);
else
@ -379,6 +410,70 @@ bad:
return PCI_DMA_ERROR_CODE;
}
static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages, int direction)
{
int limit;
if (strbuf->strbuf_ctxflush &&
iommu->iommu_ctxflush) {
unsigned long matchreg, flushreg;
u64 val;
flushreg = strbuf->strbuf_ctxflush;
matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
pci_iommu_write(flushreg, ctx);
val = pci_iommu_read(matchreg);
val &= 0xffff;
if (!val)
goto do_flush_sync;
while (val) {
if (val & 0x1)
pci_iommu_write(flushreg, ctx);
val >>= 1;
}
val = pci_iommu_read(matchreg);
if (unlikely(val)) {
printk(KERN_WARNING "pci_strbuf_flush: ctx flush "
"timeout matchreg[%lx] ctx[%lx]\n",
val, ctx);
goto do_page_flush;
}
} else {
unsigned long i;
do_page_flush:
for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
pci_iommu_write(strbuf->strbuf_pflush, vaddr);
}
do_flush_sync:
/* If the device could not have possibly put dirty data into
* the streaming cache, no flush-flag synchronization needs
* to be performed.
*/
if (direction == PCI_DMA_TODEVICE)
return;
PCI_STC_FLUSHFLAG_INIT(strbuf);
pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
(void) pci_iommu_read(iommu->write_complete_reg);
limit = 100000;
while (!PCI_STC_FLUSHFLAG_SET(strbuf)) {
limit--;
if (!limit)
break;
udelay(1);
membar("#LoadLoad");
}
if (!limit)
printk(KERN_WARNING "pci_strbuf_flush: flushflag timeout "
"vaddr[%08x] ctx[%lx] npages[%ld]\n",
vaddr, ctx, npages);
}
/* Unmap a single streaming mode DMA translation. */
void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
{
@ -386,7 +481,7 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
struct pci_iommu *iommu;
struct pci_strbuf *strbuf;
iopte_t *base;
unsigned long flags, npages, i, ctx;
unsigned long flags, npages, ctx;
if (direction == PCI_DMA_NONE)
BUG();
@ -414,29 +509,8 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
/* Step 1: Kick data out of streaming buffers if necessary. */
if (strbuf->strbuf_enabled) {
u32 vaddr = bus_addr;
PCI_STC_FLUSHFLAG_INIT(strbuf);
if (strbuf->strbuf_ctxflush &&
iommu->iommu_ctxflush) {
unsigned long matchreg, flushreg;
flushreg = strbuf->strbuf_ctxflush;
matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
do {
pci_iommu_write(flushreg, ctx);
} while(((long)pci_iommu_read(matchreg)) < 0L);
} else {
for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
pci_iommu_write(strbuf->strbuf_pflush, vaddr);
}
pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
(void) pci_iommu_read(iommu->write_complete_reg);
while (!PCI_STC_FLUSHFLAG_SET(strbuf))
membar("#LoadLoad");
}
if (strbuf->strbuf_enabled)
pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
/* Step 2: Clear out first TSB entry. */
iopte_make_dummy(iommu, base);
@ -444,6 +518,8 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
npages, ctx);
iommu_free_ctx(iommu, ctx);
spin_unlock_irqrestore(&iommu->lock, flags);
}
@ -583,7 +659,7 @@ int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int
/* Step 4: Choose a context if necessary. */
ctx = 0;
if (iommu->iommu_ctxflush)
ctx = iommu->iommu_cur_ctx++;
ctx = iommu_alloc_ctx(iommu);
/* Step 5: Create the mappings. */
if (strbuf->strbuf_enabled)
@ -647,29 +723,8 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
/* Step 1: Kick data out of streaming buffers if necessary. */
if (strbuf->strbuf_enabled) {
u32 vaddr = (u32) bus_addr;
PCI_STC_FLUSHFLAG_INIT(strbuf);
if (strbuf->strbuf_ctxflush &&
iommu->iommu_ctxflush) {
unsigned long matchreg, flushreg;
flushreg = strbuf->strbuf_ctxflush;
matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
do {
pci_iommu_write(flushreg, ctx);
} while(((long)pci_iommu_read(matchreg)) < 0L);
} else {
for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
pci_iommu_write(strbuf->strbuf_pflush, vaddr);
}
pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
(void) pci_iommu_read(iommu->write_complete_reg);
while (!PCI_STC_FLUSHFLAG_SET(strbuf))
membar("#LoadLoad");
}
if (strbuf->strbuf_enabled)
pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
/* Step 2: Clear out first TSB entry. */
iopte_make_dummy(iommu, base);
@ -677,6 +732,8 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
npages, ctx);
iommu_free_ctx(iommu, ctx);
spin_unlock_irqrestore(&iommu->lock, flags);
}
@ -715,28 +772,7 @@ void pci_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_addr, size
}
/* Step 2: Kick data out of streaming buffers. */
PCI_STC_FLUSHFLAG_INIT(strbuf);
if (iommu->iommu_ctxflush &&
strbuf->strbuf_ctxflush) {
unsigned long matchreg, flushreg;
flushreg = strbuf->strbuf_ctxflush;
matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
do {
pci_iommu_write(flushreg, ctx);
} while(((long)pci_iommu_read(matchreg)) < 0L);
} else {
unsigned long i;
for (i = 0; i < npages; i++, bus_addr += IO_PAGE_SIZE)
pci_iommu_write(strbuf->strbuf_pflush, bus_addr);
}
/* Step 3: Perform flush synchronization sequence. */
pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
(void) pci_iommu_read(iommu->write_complete_reg);
while (!PCI_STC_FLUSHFLAG_SET(strbuf))
membar("#LoadLoad");
pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
@ -749,7 +785,8 @@ void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, i
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
struct pci_strbuf *strbuf;
unsigned long flags, ctx;
unsigned long flags, ctx, npages, i;
u32 bus_addr;
pcp = pdev->sysdata;
iommu = pcp->pbm->iommu;
@ -772,36 +809,14 @@ void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, i
}
/* Step 2: Kick data out of streaming buffers. */
PCI_STC_FLUSHFLAG_INIT(strbuf);
if (iommu->iommu_ctxflush &&
strbuf->strbuf_ctxflush) {
unsigned long matchreg, flushreg;
flushreg = strbuf->strbuf_ctxflush;
matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
do {
pci_iommu_write(flushreg, ctx);
} while (((long)pci_iommu_read(matchreg)) < 0L);
} else {
unsigned long i, npages;
u32 bus_addr;
bus_addr = sglist[0].dma_address & IO_PAGE_MASK;
for(i = 1; i < nelems; i++)
if (!sglist[i].dma_length)
break;
i--;
npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length) - bus_addr) >> IO_PAGE_SHIFT;
for (i = 0; i < npages; i++, bus_addr += IO_PAGE_SIZE)
pci_iommu_write(strbuf->strbuf_pflush, bus_addr);
}
/* Step 3: Perform flush synchronization sequence. */
pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
(void) pci_iommu_read(iommu->write_complete_reg);
while (!PCI_STC_FLUSHFLAG_SET(strbuf))
membar("#LoadLoad");
bus_addr = sglist[0].dma_address & IO_PAGE_MASK;
for(i = 1; i < nelems; i++)
if (!sglist[i].dma_length)
break;
i--;
npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length)
- bus_addr) >> IO_PAGE_SHIFT;
pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}

2
arch/sparc64/kernel/pci_psycho.c
View File

@ -1212,7 +1212,7 @@ static void __init psycho_iommu_init(struct pci_controller_info *p)
/* Setup initial software IOMMU state. */
spin_lock_init(&iommu->lock);
iommu->iommu_cur_ctx = 0;
iommu->ctx_lowest_free = 1;
/* Register addresses. */
iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;

2
arch/sparc64/kernel/pci_sabre.c
View File

@ -1265,7 +1265,7 @@ static void __init sabre_iommu_init(struct pci_controller_info *p,
/* Setup initial software IOMMU state. */
spin_lock_init(&iommu->lock);
iommu->iommu_cur_ctx = 0;
iommu->ctx_lowest_free = 1;
/* Register addresses. */
iommu->iommu_control = p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL;

2
arch/sparc64/kernel/pci_schizo.c
View File

@ -1753,7 +1753,7 @@ static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
/* Setup initial software IOMMU state. */
spin_lock_init(&iommu->lock);
iommu->iommu_cur_ctx = 0;
iommu->ctx_lowest_free = 1;
/* Register addresses, SCHIZO has iommu ctx flushing. */
iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;

41
arch/sparc64/kernel/sbus.c
View File

@ -117,19 +117,42 @@ static void iommu_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages
#define STRBUF_TAG_VALID 0x02UL
static void strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages)
static void sbus_strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages, int direction)
{
iommu->strbuf_flushflag = 0UL;
while (npages--)
upa_writeq(base + (npages << IO_PAGE_SHIFT),
unsigned long n;
int limit;
n = npages;
while (n--)
upa_writeq(base + (n << IO_PAGE_SHIFT),
iommu->strbuf_regs + STRBUF_PFLUSH);
/* If the device could not have possibly put dirty data into
* the streaming cache, no flush-flag synchronization needs
* to be performed.
*/
if (direction == SBUS_DMA_TODEVICE)
return;
iommu->strbuf_flushflag = 0UL;
/* Whoopee cushion! */
upa_writeq(__pa(&iommu->strbuf_flushflag),
iommu->strbuf_regs + STRBUF_FSYNC);
upa_readq(iommu->sbus_control_reg);
while (iommu->strbuf_flushflag == 0UL)
limit = 100000;
while (iommu->strbuf_flushflag == 0UL) {
limit--;
if (!limit)
break;
udelay(1);
membar("#LoadLoad");
}
if (!limit)
printk(KERN_WARNING "sbus_strbuf_flush: flushflag timeout "
"vaddr[%08x] npages[%ld]\n",
base, npages);
}
static iopte_t *alloc_streaming_cluster(struct sbus_iommu *iommu, unsigned long npages)
@ -406,7 +429,7 @@ void sbus_unmap_single(struct sbus_dev *sdev, dma_addr_t dma_addr, size_t size,
spin_lock_irqsave(&iommu->lock, flags);
free_streaming_cluster(iommu, dma_base, size >> IO_PAGE_SHIFT);
strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT);
sbus_strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
@ -569,7 +592,7 @@ void sbus_unmap_sg(struct sbus_dev *sdev, struct scatterlist *sg, int nents, int
iommu = sdev->bus->iommu;
spin_lock_irqsave(&iommu->lock, flags);
free_streaming_cluster(iommu, dvma_base, size >> IO_PAGE_SHIFT);
strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT);
sbus_strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
@ -581,7 +604,7 @@ void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev, dma_addr_t base, size_t
size = (IO_PAGE_ALIGN(base + size) - (base & IO_PAGE_MASK));
spin_lock_irqsave(&iommu->lock, flags);
strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT);
sbus_strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
@ -605,7 +628,7 @@ void sbus_dma_sync_sg_for_cpu(struct sbus_dev *sdev, struct scatterlist *sg, int
size = IO_PAGE_ALIGN(sg[i].dma_address + sg[i].dma_length) - base;
spin_lock_irqsave(&iommu->lock, flags);
strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT);
sbus_strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}

11
arch/sparc64/kernel/setup.c
View File

@ -383,6 +383,17 @@ static void __init process_switch(char c)
/* Use PROM debug console. */
register_console(&prom_debug_console);
break;
case 'P':
/* Force UltraSPARC-III P-Cache on. */
if (tlb_type != cheetah) {
printk("BOOT: Ignoring P-Cache force option.\n");
break;
}
cheetah_pcache_forced_on = 1;
add_taint(TAINT_MACHINE_CHECK);
cheetah_enable_pcache();
break;
default:
printk("Unknown boot switch (-%c)\n", c);
break;

3
arch/sparc64/kernel/smp.c
View File

@ -123,6 +123,9 @@ void __init smp_callin(void)
smp_setup_percpu_timer();
if (cheetah_pcache_forced_on)
cheetah_enable_pcache();
local_irq_enable();
calibrate_delay();

19
arch/sparc64/kernel/traps.c
View File

@ -421,6 +421,25 @@ asmlinkage void cee_log(unsigned long ce_status,
}
}
int cheetah_pcache_forced_on;
void cheetah_enable_pcache(void)
{
unsigned long dcr;
printk("CHEETAH: Enabling P-Cache on cpu %d.\n",
smp_processor_id());
__asm__ __volatile__("ldxa [%%g0] %1, %0"
: "=r" (dcr)
: "i" (ASI_DCU_CONTROL_REG));
dcr |= (DCU_PE | DCU_HPE | DCU_SPE | DCU_SL);
__asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
"membar #Sync"
: /* no outputs */
: "r" (dcr), "i" (ASI_DCU_CONTROL_REG));
}
/* Cheetah error trap handling. */
static unsigned long ecache_flush_physbase;
static unsigned long ecache_flush_linesize;

4
arch/um/Kconfig.debug
View File

@ -2,10 +2,6 @@ menu "Kernel hacking"
source "lib/Kconfig.debug"
config FRAME_POINTER
bool
default y if DEBUG_INFO
config PT_PROXY
bool "Enable ptrace proxy"
depends on XTERM_CHAN && DEBUG_INFO && MODE_TT

4
arch/um/Kconfig_x86_64
View File

@ -6,6 +6,10 @@ config 64BIT
bool
default y
config TOP_ADDR
hex
default 0x80000000
config 3_LEVEL_PGTABLES
bool
default y

22
arch/um/drivers/chan_kern.c
View File

@ -20,9 +20,17 @@
#include "os.h"
#ifdef CONFIG_NOCONFIG_CHAN
/* The printk's here are wrong because we are complaining that there is no
* output device, but printk is printing to that output device. The user will
* never see the error. printf would be better, except it can't run on a
* kernel stack because it will overflow it.
* Use printk for now since that will avoid crashing.
*/
static void *not_configged_init(char *str, int device, struct chan_opts *opts)
{
printf(KERN_ERR "Using a channel type which is configured out of "
printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(NULL);
}
@ -30,27 +38,27 @@ static void *not_configged_init(char *str, int device, struct chan_opts *opts)
static int not_configged_open(int input, int output, int primary, void *data,
char **dev_out)
{
printf(KERN_ERR "Using a channel type which is configured out of "
printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-ENODEV);
}
static void not_configged_close(int fd, void *data)
{
printf(KERN_ERR "Using a channel type which is configured out of "
printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
}
static int not_configged_read(int fd, char *c_out, void *data)
{
printf(KERN_ERR "Using a channel type which is configured out of "
printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
static int not_configged_write(int fd, const char *buf, int len, void *data)
{
printf(KERN_ERR "Using a channel type which is configured out of "
printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
@ -58,7 +66,7 @@ static int not_configged_write(int fd, const char *buf, int len, void *data)
static int not_configged_console_write(int fd, const char *buf, int len,
void *data)
{
printf(KERN_ERR "Using a channel type which is configured out of "
printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
@ -66,7 +74,7 @@ static int not_configged_console_write(int fd, const char *buf, int len,
static int not_configged_window_size(int fd, void *data, unsigned short *rows,
unsigned short *cols)
{
printf(KERN_ERR "Using a channel type which is configured out of "
printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-ENODEV);
}

4
arch/um/drivers/mcast_kern.c
View File

@ -73,7 +73,6 @@ int mcast_setup(char *str, char **mac_out, void *data)
struct mcast_init *init = data;
char *port_str = NULL, *ttl_str = NULL, *remain;
char *last;
int n;
*init = ((struct mcast_init)
{ .addr = "239.192.168.1",
@ -89,13 +88,12 @@ int mcast_setup(char *str, char **mac_out, void *data)
}
if(port_str != NULL){
n = simple_strtoul(port_str, &last, 10);
init->port = simple_strtoul(port_str, &last, 10);
if((*last != '\0') || (last == port_str)){
printk(KERN_ERR "mcast_setup - Bad port : '%s'\n",
port_str);
return(0);
}
init->port = htons(n);
}
if(ttl_str != NULL){

47
arch/um/drivers/mcast_user.c
View File

@ -38,7 +38,7 @@ static struct sockaddr_in *new_addr(char *addr, unsigned short port)
}
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = in_aton(addr);
sin->sin_port = port;
sin->sin_port = htons(port);
return(sin);
}
@ -55,28 +55,25 @@ static int mcast_open(void *data)
struct mcast_data *pri = data;
struct sockaddr_in *sin = pri->mcast_addr;
struct ip_mreq mreq;
int fd, yes = 1;
int fd = -EINVAL, yes = 1, err = -EINVAL;;
if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0)) {
fd = -EINVAL;
if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0))
goto out;
}
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0){
printk("mcast_open : data socket failed, errno = %d\n",
errno);
fd = -ENOMEM;
fd = -errno;
goto out;
}
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
printk("mcast_open: SO_REUSEADDR failed, errno = %d\n",
errno);
os_close_file(fd);
fd = -EINVAL;
goto out;
goto out_close;
}
/* set ttl according to config */
@ -84,26 +81,20 @@ static int mcast_open(void *data)
sizeof(pri->ttl)) < 0) {
printk("mcast_open: IP_MULTICAST_TTL failed, error = %d\n",
errno);
os_close_file(fd);
fd = -EINVAL;
goto out;
goto out_close;
}
/* set LOOP, so data does get fed back to local sockets */
if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
printk("mcast_open: IP_MULTICAST_LOOP failed, error = %d\n",
errno);
os_close_file(fd);
fd = -EINVAL;
goto out;
goto out_close;
}
/* bind socket to mcast address */
if (bind(fd, (struct sockaddr *) sin, sizeof(*sin)) < 0) {
printk("mcast_open : data bind failed, errno = %d\n", errno);
os_close_file(fd);
fd = -EINVAL;
goto out;
goto out_close;
}
/* subscribe to the multicast group */
@ -117,12 +108,15 @@ static int mcast_open(void *data)
"interface on the host.\n");
printk("eth0 should be configured in order to use the "
"multicast transport.\n");
os_close_file(fd);
fd = -EINVAL;
goto out_close;
}
out:
return(fd);
return fd;
out_close:
os_close_file(fd);
return err;
}
static void mcast_close(int fd, void *data)
@ -164,14 +158,3 @@ struct net_user_info mcast_user_info = {
.delete_address = NULL,
.max_packet = MAX_PACKET - ETH_HEADER_OTHER
};
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/

16
arch/um/drivers/random.c
View File

@ -1,5 +1,10 @@
/* Much of this ripped from hw_random.c */
/* Copyright (C) 2005 Jeff Dike <jdike@addtoit.com> */
/* Much of this ripped from drivers/char/hw_random.c, see there for other
* copyright.
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*/
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
@ -12,8 +17,6 @@
*/
#define RNG_VERSION "1.0.0"
#define RNG_MODULE_NAME "random"
#define RNG_DRIVER_NAME RNG_MODULE_NAME " virtual driver " RNG_VERSION
#define PFX RNG_MODULE_NAME ": "
#define RNG_MISCDEV_MINOR 183 /* official */
@ -98,7 +101,7 @@ static int __init rng_init (void)
err = misc_register (&rng_miscdev);
if (err) {
printk (KERN_ERR PFX "misc device register failed\n");
printk (KERN_ERR RNG_MODULE_NAME ": misc device register failed\n");
goto err_out_cleanup_hw;
}
@ -120,3 +123,6 @@ static void __exit rng_cleanup (void)
module_init (rng_init);
module_exit (rng_cleanup);
MODULE_DESCRIPTION("UML Host Random Number Generator (RNG) driver");
MODULE_LICENSE("GPL");

1
arch/um/drivers/ssl.c
View File

@ -22,7 +22,6 @@
#include "init.h"
#include "irq_user.h"
#include "mconsole_kern.h"
#include "2_5compat.h"
static int ssl_version = 1;

1
arch/um/drivers/stdio_console.c
View File

@ -28,7 +28,6 @@
#include "irq_user.h"
#include "mconsole_kern.h"
#include "init.h"
#include "2_5compat.h"
#define MAX_TTYS (16)

303
arch/um/drivers/ubd_kern.c
View File

@ -49,13 +49,12 @@
#include "irq_user.h"
#include "irq_kern.h"
#include "ubd_user.h"
#include "2_5compat.h"
#include "os.h"
#include "mem.h"
#include "mem_kern.h"
#include "cow.h"
enum ubd_req { UBD_READ, UBD_WRITE, UBD_MMAP };
enum ubd_req { UBD_READ, UBD_WRITE };
struct io_thread_req {
enum ubd_req op;
@ -68,8 +67,6 @@ struct io_thread_req {
unsigned long sector_mask;
unsigned long long cow_offset;
unsigned long bitmap_words[2];
int map_fd;
unsigned long long map_offset;
int error;
};
@ -122,10 +119,6 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
#define MAX_DEV (8)
/* Changed in early boot */
static int ubd_do_mmap = 0;
#define UBD_MMAP_BLOCK_SIZE PAGE_SIZE
static struct block_device_operations ubd_blops = {
.owner = THIS_MODULE,
.open = ubd_open,
@ -175,12 +168,6 @@ struct ubd {
int no_cow;
struct cow cow;
struct platform_device pdev;
int map_writes;
int map_reads;
int nomap_writes;
int nomap_reads;
int write_maps;
};
#define DEFAULT_COW { \
@ -200,11 +187,6 @@ struct ubd {
.openflags = OPEN_FLAGS, \
.no_cow = 0, \
.cow = DEFAULT_COW, \
.map_writes = 0, \
.map_reads = 0, \
.nomap_writes = 0, \
.nomap_reads = 0, \
.write_maps = 0, \
}
struct ubd ubd_dev[MAX_DEV] = { [ 0 ... MAX_DEV - 1 ] = DEFAULT_UBD };
@ -314,13 +296,6 @@ static int ubd_setup_common(char *str, int *index_out)
int major;
str++;
if(!strcmp(str, "mmap")){
CHOOSE_MODE(printk("mmap not supported by the ubd "
"driver in tt mode\n"),
ubd_do_mmap = 1);
return(0);
}
if(!strcmp(str, "sync")){
global_openflags = of_sync(global_openflags);
return(0);
@ -464,9 +439,9 @@ static int udb_setup(char *str)
__setup("udb", udb_setup);
__uml_help(udb_setup,
"udb\n"
" This option is here solely to catch ubd -> udb typos, which can be\n\n"
" to impossible to catch visually unless you specifically look for\n\n"
" them. The only result of any option starting with 'udb' is an error\n\n"
" This option is here solely to catch ubd -> udb typos, which can be\n"
" to impossible to catch visually unless you specifically look for\n"
" them. The only result of any option starting with 'udb' is an error\n"
" in the boot output.\n\n"
);
@ -524,7 +499,7 @@ static void ubd_handler(void)
{
struct io_thread_req req;
struct request *rq = elv_next_request(ubd_queue);
int n, err;
int n;
do_ubd = NULL;
intr_count++;
@ -538,19 +513,6 @@ static void ubd_handler(void)
return;
}
if((req.op != UBD_MMAP) &&
((req.offset != ((__u64) (rq->sector)) << 9) ||
(req.length != (rq->current_nr_sectors) << 9)))
panic("I/O op mismatch");
if(req.map_fd != -1){
err = physmem_subst_mapping(req.buffer, req.map_fd,
req.map_offset, 1);
if(err)
printk("ubd_handler - physmem_subst_mapping failed, "
"err = %d\n", -err);
}
ubd_finish(rq, req.error);
reactivate_fd(thread_fd, UBD_IRQ);
do_ubd_request(ubd_queue);
@ -583,14 +545,10 @@ static int ubd_file_size(struct ubd *dev, __u64 *size_out)
static void ubd_close(struct ubd *dev)
{
if(ubd_do_mmap)
physmem_forget_descriptor(dev->fd);
os_close_file(dev->fd);
if(dev->cow.file == NULL)
return;
if(ubd_do_mmap)
physmem_forget_descriptor(dev->cow.fd);
os_close_file(dev->cow.fd);
vfree(dev->cow.bitmap);
dev->cow.bitmap = NULL;
@ -1010,94 +968,13 @@ static void cowify_req(struct io_thread_req *req, unsigned long *bitmap,
req->bitmap_words, bitmap_len);
}
static int mmap_fd(struct request *req, struct ubd *dev, __u64 offset)
{
__u64 sector;
unsigned char *bitmap;
int bit, i;
/* mmap must have been requested on the command line */
if(!ubd_do_mmap)
return(-1);
/* The buffer must be page aligned */
if(((unsigned long) req->buffer % UBD_MMAP_BLOCK_SIZE) != 0)
return(-1);
/* The request must be a page long */
if((req->current_nr_sectors << 9) != PAGE_SIZE)
return(-1);
if(dev->cow.file == NULL)
return(dev->fd);
sector = offset >> 9;
bitmap = (unsigned char *) dev->cow.bitmap;
bit = ubd_test_bit(sector, bitmap);
for(i = 1; i < req->current_nr_sectors; i++){
if(ubd_test_bit(sector + i, bitmap) != bit)
return(-1);
}
if(bit || (rq_data_dir(req) == WRITE))
offset += dev->cow.data_offset;
/* The data on disk must be page aligned */
if((offset % UBD_MMAP_BLOCK_SIZE) != 0)
return(-1);
return(bit ? dev->fd : dev->cow.fd);
}
static int prepare_mmap_request(struct ubd *dev, int fd, __u64 offset,
struct request *req,
struct io_thread_req *io_req)
{
int err;
if(rq_data_dir(req) == WRITE){
/* Writes are almost no-ops since the new data is already in the
* host page cache
*/
dev->map_writes++;
if(dev->cow.file != NULL)
cowify_bitmap(io_req->offset, io_req->length,
&io_req->sector_mask, &io_req->cow_offset,
dev->cow.bitmap, dev->cow.bitmap_offset,
io_req->bitmap_words,
dev->cow.bitmap_len);
}
else {
int w;
if((dev->cow.file != NULL) && (fd == dev->cow.fd))
w = 0;
else w = dev->openflags.w;
if((dev->cow.file != NULL) && (fd == dev->fd))
offset += dev->cow.data_offset;
err = physmem_subst_mapping(req->buffer, fd, offset, w);
if(err){
printk("physmem_subst_mapping failed, err = %d\n",
-err);
return(1);
}
dev->map_reads++;
}
io_req->op = UBD_MMAP;
io_req->buffer = req->buffer;
return(0);
}
/* Called with ubd_io_lock held */
static int prepare_request(struct request *req, struct io_thread_req *io_req)
{
struct gendisk *disk = req->rq_disk;
struct ubd *dev = disk->private_data;
__u64 offset;
int len, fd;
int len;
if(req->rq_status == RQ_INACTIVE) return(1);
@ -1114,34 +991,12 @@ static int prepare_request(struct request *req, struct io_thread_req *io_req)
io_req->fds[0] = (dev->cow.file != NULL) ? dev->cow.fd : dev->fd;
io_req->fds[1] = dev->fd;
io_req->map_fd = -1;
io_req->cow_offset = -1;
io_req->offset = offset;
io_req->length = len;
io_req->error = 0;
io_req->sector_mask = 0;
fd = mmap_fd(req, dev, io_req->offset);
if(fd > 0){
/* If mmapping is otherwise OK, but the first access to the
* page is a write, then it's not mapped in yet. So we have
* to write the data to disk first, then we can map the disk
* page in and continue normally from there.
*/
if((rq_data_dir(req) == WRITE) && !is_remapped(req->buffer)){
io_req->map_fd = dev->fd;
io_req->map_offset = io_req->offset +
dev->cow.data_offset;
dev->write_maps++;
}
else return(prepare_mmap_request(dev, fd, io_req->offset, req,
io_req));
}
if(rq_data_dir(req) == READ)
dev->nomap_reads++;
else dev->nomap_writes++;
io_req->op = (rq_data_dir(req) == READ) ? UBD_READ : UBD_WRITE;
io_req->offsets[0] = 0;
io_req->offsets[1] = dev->cow.data_offset;
@ -1229,143 +1084,6 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
return(-EINVAL);
}
static int ubd_check_remapped(int fd, unsigned long address, int is_write,
__u64 offset)
{
__u64 bitmap_offset;
unsigned long new_bitmap[2];
int i, err, n;
/* If it's not a write access, we can't do anything about it */
if(!is_write)
return(0);
/* We have a write */
for(i = 0; i < sizeof(ubd_dev) / sizeof(ubd_dev[0]); i++){
struct ubd *dev = &ubd_dev[i];
if((dev->fd != fd) && (dev->cow.fd != fd))
continue;
/* It's a write to a ubd device */
/* This should be impossible now */
if(!dev->openflags.w){
/* It's a write access on a read-only device - probably
* shouldn't happen. If the kernel is trying to change
* something with no intention of writing it back out,
* then this message will clue us in that this needs
* fixing
*/
printk("Write access to mapped page from readonly ubd "
"device %d\n", i);
return(0);
}
/* It's a write to a writeable ubd device - it must be COWed
* because, otherwise, the page would have been mapped in
* writeable
*/
if(!dev->cow.file)
panic("Write fault on writeable non-COW ubd device %d",
i);
/* It should also be an access to the backing file since the
* COW pages should be mapped in read-write
*/
if(fd == dev->fd)
panic("Write fault on a backing page of ubd "
"device %d\n", i);
/* So, we do the write, copying the backing data to the COW
* file...
*/
err = os_seek_file(dev->fd, offset + dev->cow.data_offset);
if(err < 0)
panic("Couldn't seek to %lld in COW file of ubd "
"device %d, err = %d",
offset + dev->cow.data_offset, i, -err);
n = os_write_file(dev->fd, (void *) address, PAGE_SIZE);
if(n != PAGE_SIZE)
panic("Couldn't copy data to COW file of ubd "
"device %d, err = %d", i, -n);
/* ... updating the COW bitmap... */
cowify_bitmap(offset, PAGE_SIZE, NULL, &bitmap_offset,
dev->cow.bitmap, dev->cow.bitmap_offset,
new_bitmap, dev->cow.bitmap_len);
err = os_seek_file(dev->fd, bitmap_offset);
if(err < 0)
panic("Couldn't seek to %lld in COW file of ubd "
"device %d, err = %d", bitmap_offset, i, -err);
n = os_write_file(dev->fd, new_bitmap, sizeof(new_bitmap));
if(n != sizeof(new_bitmap))
panic("Couldn't update bitmap of ubd device %d, "
"err = %d", i, -n);
/* Maybe we can map the COW page in, and maybe we can't. If
* it is a pre-V3 COW file, we can't, since the alignment will
* be wrong. If it is a V3 or later COW file which has been
* moved to a system with a larger page size, then maybe we
* can't, depending on the exact location of the page.
*/
offset += dev->cow.data_offset;
/* Remove the remapping, putting the original anonymous page
* back. If the COW file can be mapped in, that is done.
* Otherwise, the COW page is read in.
*/
if(!physmem_remove_mapping((void *) address))
panic("Address 0x%lx not remapped by ubd device %d",
address, i);
if((offset % UBD_MMAP_BLOCK_SIZE) == 0)
physmem_subst_mapping((void *) address, dev->fd,
offset, 1);
else {
err = os_seek_file(dev->fd, offset);
if(err < 0)
panic("Couldn't seek to %lld in COW file of "
"ubd device %d, err = %d", offset, i,
-err);
n = os_read_file(dev->fd, (void *) address, PAGE_SIZE);
if(n != PAGE_SIZE)
panic("Failed to read page from offset %llx of "
"COW file of ubd device %d, err = %d",
offset, i, -n);
}
return(1);
}
/* It's not a write on a ubd device */
return(0);
}
static struct remapper ubd_remapper = {
.list = LIST_HEAD_INIT(ubd_remapper.list),
.proc = ubd_check_remapped,
};
static int ubd_remapper_setup(void)
{
if(ubd_do_mmap)
register_remapper(&ubd_remapper);
return(0);
}
__initcall(ubd_remapper_setup);
static int same_backing_files(char *from_cmdline, char *from_cow, char *cow)
{
struct uml_stat buf1, buf2;
@ -1568,15 +1286,6 @@ void do_io(struct io_thread_req *req)
int err;
__u64 off;
if(req->op == UBD_MMAP){
/* Touch the page to force the host to do any necessary IO to
* get it into memory
*/
n = *((volatile int *) req->buffer);
req->error = update_bitmap(req);
return;
}
nsectors = req->length / req->sectorsize;
start = 0;
do {

24
arch/um/include/2_5compat.h
View File

@ -1,24 +0,0 @@
/*
* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __2_5_COMPAT_H__
#define __2_5_COMPAT_H__
#define INIT_HARDSECT(arr, maj, sizes)
#define SET_PRI(task) do ; while(0)
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/

2
arch/um/include/sysdep-i386/ptrace.h
View File

@ -31,7 +31,6 @@ extern int sysemu_supported;
#ifdef UML_CONFIG_MODE_SKAS
#include "skas_ptregs.h"
#include "sysdep/faultinfo.h"
#define REGS_IP(r) ((r)[HOST_IP])
#define REGS_SP(r) ((r)[HOST_SP])
@ -59,6 +58,7 @@ extern int sysemu_supported;
#define PTRACE_SYSEMU_SINGLESTEP 32
#endif
#include "sysdep/faultinfo.h"
#include "choose-mode.h"
union uml_pt_regs {

26
arch/um/include/sysdep-x86_64/checksum.h
View File

@ -9,8 +9,6 @@
#include "linux/in6.h"
#include "asm/uaccess.h"
extern unsigned int csum_partial_copy_from(const unsigned char *src, unsigned char *dst, int len,
int sum, int *err_ptr);
extern unsigned csum_partial(const unsigned char *buff, unsigned len,
unsigned sum);
@ -31,10 +29,15 @@ unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char *
}
static __inline__
unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char *dst,
int len, int sum, int *err_ptr)
unsigned int csum_partial_copy_from_user(const unsigned char *src,
unsigned char *dst, int len, int sum,
int *err_ptr)
{
return csum_partial_copy_from(src, dst, len, sum, err_ptr);
if(copy_from_user(dst, src, len)){
*err_ptr = -EFAULT;
return(-1);
}
return csum_partial(dst, len, sum);
}
/**
@ -137,15 +140,6 @@ static inline unsigned add32_with_carry(unsigned a, unsigned b)
return a;
}
#endif
extern unsigned short ip_compute_csum(unsigned char * buff, int len);
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
#endif

62
arch/um/include/sysdep-x86_64/ptrace.h
View File

@ -135,6 +135,7 @@ extern int mode_tt;
__CHOOSE_MODE(SC_EFLAGS(UPT_SC(r)), REGS_EFLAGS((r)->skas.regs))
#define UPT_SC(r) ((r)->tt.sc)
#define UPT_SYSCALL_NR(r) __CHOOSE_MODE((r)->tt.syscall, (r)->skas.syscall)
#define UPT_SYSCALL_RET(r) UPT_RAX(r)
extern int user_context(unsigned long sp);
@ -196,32 +197,32 @@ struct syscall_args {
#define UPT_SET(regs, reg, val) \
({ unsigned long val; \
({ unsigned long __upt_val = val; \
switch(reg){ \
case R8: UPT_R8(regs) = val; break; \
case R9: UPT_R9(regs) = val; break; \
case R10: UPT_R10(regs) = val; break; \
case R11: UPT_R11(regs) = val; break; \
case R12: UPT_R12(regs) = val; break; \
case R13: UPT_R13(regs) = val; break; \
case R14: UPT_R14(regs) = val; break; \
case R15: UPT_R15(regs) = val; break; \
case RIP: UPT_IP(regs) = val; break; \
case RSP: UPT_SP(regs) = val; break; \
case RAX: UPT_RAX(regs) = val; break; \
case RBX: UPT_RBX(regs) = val; break; \
case RCX: UPT_RCX(regs) = val; break; \
case RDX: UPT_RDX(regs) = val; break; \
case RSI: UPT_RSI(regs) = val; break; \
case RDI: UPT_RDI(regs) = val; break; \
case RBP: UPT_RBP(regs) = val; break; \
case ORIG_RAX: UPT_ORIG_RAX(regs) = val; break; \
case CS: UPT_CS(regs) = val; break; \
case DS: UPT_DS(regs) = val; break; \
case ES: UPT_ES(regs) = val; break; \
case FS: UPT_FS(regs) = val; break; \
case GS: UPT_GS(regs) = val; break; \
case EFLAGS: UPT_EFLAGS(regs) = val; break; \
case R8: UPT_R8(regs) = __upt_val; break; \
case R9: UPT_R9(regs) = __upt_val; break; \
case R10: UPT_R10(regs) = __upt_val; break; \
case R11: UPT_R11(regs) = __upt_val; break; \
case R12: UPT_R12(regs) = __upt_val; break; \
case R13: UPT_R13(regs) = __upt_val; break; \
case R14: UPT_R14(regs) = __upt_val; break; \
case R15: UPT_R15(regs) = __upt_val; break; \
case RIP: UPT_IP(regs) = __upt_val; break; \
case RSP: UPT_SP(regs) = __upt_val; break; \
case RAX: UPT_RAX(regs) = __upt_val; break; \
case RBX: UPT_RBX(regs) = __upt_val; break; \
case RCX: UPT_RCX(regs) = __upt_val; break; \
case RDX: UPT_RDX(regs) = __upt_val; break; \
case RSI: UPT_RSI(regs) = __upt_val; break; \
case RDI: UPT_RDI(regs) = __upt_val; break; \
case RBP: UPT_RBP(regs) = __upt_val; break; \
case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
case CS: UPT_CS(regs) = __upt_val; break; \
case DS: UPT_DS(regs) = __upt_val; break; \
case ES: UPT_ES(regs) = __upt_val; break; \
case FS: UPT_FS(regs) = __upt_val; break; \
case GS: UPT_GS(regs) = __upt_val; break; \
case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
default : \
panic("Bad register in UPT_SET : %d\n", reg); \
break; \
@ -245,14 +246,3 @@ struct syscall_args {
CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo))
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/

3
arch/um/include/sysrq.h
View File

@ -1,6 +1,7 @@
#ifndef __UM_SYSRQ_H
#define __UM_SYSRQ_H
extern void show_trace(unsigned long *stack);
struct task_struct;
extern void show_trace(struct task_struct* task, unsigned long *stack);
#endif

2
arch/um/kernel/Makefile
View File

@ -14,7 +14,7 @@ obj-y = config.o exec_kern.o exitcode.o \
tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o umid.o \
user_util.o
obj-$(CONFIG_BLK_DEV_INITRD) += initrd_kern.o initrd_user.o
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
obj-$(CONFIG_GPROF) += gprof_syms.o
obj-$(CONFIG_GCOV) += gmon_syms.o
obj-$(CONFIG_TTY_LOG) += tty_log.o

0
arch/um/kernel/checksum.c
View File

1
arch/um/kernel/exec_kern.c
View File

@ -16,7 +16,6 @@
#include "kern.h"
#include "irq_user.h"
#include "tlb.h"
#include "2_5compat.h"
#include "os.h"
#include "time_user.h"
#include "choose-mode.h"

21
arch/um/kernel/initrd_kern.c → arch/um/kernel/initrd.c
View File

@ -41,12 +41,31 @@ static int __init uml_initrd_setup(char *line, int *add)
return 0;
}
__uml_setup("initrd=", uml_initrd_setup,
__uml_setup("initrd=", uml_initrd_setup,
"initrd=<initrd image>\n"
" This is used to boot UML from an initrd image. The argument is the\n"
" name of the file containing the image.\n\n"
);
int load_initrd(char *filename, void *buf, int size)
{
int fd, n;
fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
if(fd < 0){
printk("Opening '%s' failed - err = %d\n", filename, -fd);
return(-1);
}
n = os_read_file(fd, buf, size);
if(n != size){
printk("Read of %d bytes from '%s' failed, err = %d\n", size,
filename, -n);
return(-1);
}
os_close_file(fd);
return(0);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically

46
arch/um/kernel/initrd_user.c
View File

@ -1,46 +0,0 @@
/*
* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include "user_util.h"
#include "kern_util.h"
#include "user.h"
#include "initrd.h"
#include "os.h"
int load_initrd(char *filename, void *buf, int size)
{
int fd, n;
fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
if(fd < 0){
printk("Opening '%s' failed - err = %d\n", filename, -fd);
return(-1);
}
n = os_read_file(fd, buf, size);
if(n != size){
printk("Read of %d bytes from '%s' failed, err = %d\n", size,
filename, -n);
return(-1);
}
os_close_file(fd);
return(0);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/

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