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Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

Browse source
This commit is contained in:
David S. Miller 2010-03-15 16:23:54 -07:00
commit 4961e02f19
3607 changed files with 185407 additions and 86837 deletions
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2
drivers/Kconfig
View file

@ -96,8 +96,6 @@ source "drivers/edac/Kconfig"
source "drivers/rtc/Kconfig"
source "drivers/clocksource/Kconfig"
source "drivers/dma/Kconfig"
source "drivers/dca/Kconfig"

1
drivers/Makefile
View file

@ -99,6 +99,7 @@ obj-$(CONFIG_SGI_SN) += sn/
obj-y += firmware/
obj-$(CONFIG_CRYPTO) += crypto/
obj-$(CONFIG_SUPERH) += sh/
obj-$(CONFIG_ARCH_SHMOBILE) += sh/
obj-$(CONFIG_GENERIC_TIME) += clocksource/
obj-$(CONFIG_DMA_ENGINE) += dma/
obj-$(CONFIG_DCA) += dca/

4
drivers/acpi/Makefile
View file

@ -32,7 +32,7 @@ acpi-$(CONFIG_ACPI_SLEEP) += proc.o
#
acpi-y += bus.o glue.o
acpi-y += scan.o
acpi-y += processor_pdc.o
acpi-y += processor_core.o
acpi-y += ec.o
acpi-$(CONFIG_ACPI_DOCK) += dock.o
acpi-y += pci_root.o pci_link.o pci_irq.o pci_bind.o
@ -61,7 +61,7 @@ obj-$(CONFIG_ACPI_SBS) += sbs.o
obj-$(CONFIG_ACPI_POWER_METER) += power_meter.o
# processor has its own "processor." module_param namespace
processor-y := processor_core.o processor_throttling.o
processor-y := processor_driver.o processor_throttling.o
processor-y += processor_idle.o processor_thermal.o
processor-$(CONFIG_CPU_FREQ) += processor_perflib.o

3
drivers/acpi/acpica/exmutex.c
View file

@ -375,8 +375,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(AE_AML_MUTEX_NOT_ACQUIRED);
}
/* Must have a valid thread ID */
/* Must have a valid thread. */
if (!walk_state->thread) {
ACPI_ERROR((AE_INFO,
"Cannot release Mutex [%4.4s], null thread info",

86
drivers/acpi/battery.c
View file

@ -54,6 +54,7 @@
#define ACPI_BATTERY_DEVICE_NAME "Battery"
#define ACPI_BATTERY_NOTIFY_STATUS 0x80
#define ACPI_BATTERY_NOTIFY_INFO 0x81
#define ACPI_BATTERY_NOTIFY_THRESHOLD 0x82
#define _COMPONENT ACPI_BATTERY_COMPONENT
@ -88,10 +89,15 @@ static const struct acpi_device_id battery_device_ids[] = {
MODULE_DEVICE_TABLE(acpi, battery_device_ids);
/* For buggy DSDTs that report negative 16-bit values for either charging
* or discharging current and/or report 0 as 65536 due to bad math.
*/
#define QUIRK_SIGNED16_CURRENT 0x0001
enum {
ACPI_BATTERY_ALARM_PRESENT,
ACPI_BATTERY_XINFO_PRESENT,
/* For buggy DSDTs that report negative 16-bit values for either
* charging or discharging current and/or report 0 as 65536
* due to bad math.
*/
ACPI_BATTERY_QUIRK_SIGNED16_CURRENT,
};
struct acpi_battery {
struct mutex lock;
@ -109,6 +115,12 @@ struct acpi_battery {
int design_voltage;
int design_capacity_warning;
int design_capacity_low;
int cycle_count;
int measurement_accuracy;
int max_sampling_time;
int min_sampling_time;
int max_averaging_interval;
int min_averaging_interval;
int capacity_granularity_1;
int capacity_granularity_2;
int alarm;
@ -118,8 +130,7 @@ struct acpi_battery {
char oem_info[32];
int state;
int power_unit;
u8 alarm_present;
long quirks;
unsigned long flags;
};
#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
@ -198,6 +209,9 @@ static int acpi_battery_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = acpi_battery_technology(battery);
break;
case POWER_SUPPLY_PROP_CYCLE_COUNT:
val->intval = battery->cycle_count;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = battery->design_voltage * 1000;
break;
@ -239,6 +253,7 @@ static enum power_supply_property charge_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
@ -254,6 +269,7 @@ static enum power_supply_property energy_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
@ -305,6 +321,28 @@ static struct acpi_offsets info_offsets[] = {
{offsetof(struct acpi_battery, oem_info), 1},
};
static struct acpi_offsets extended_info_offsets[] = {
{offsetof(struct acpi_battery, power_unit), 0},
{offsetof(struct acpi_battery, design_capacity), 0},
{offsetof(struct acpi_battery, full_charge_capacity), 0},
{offsetof(struct acpi_battery, technology), 0},
{offsetof(struct acpi_battery, design_voltage), 0},
{offsetof(struct acpi_battery, design_capacity_warning), 0},
{offsetof(struct acpi_battery, design_capacity_low), 0},
{offsetof(struct acpi_battery, cycle_count), 0},
{offsetof(struct acpi_battery, measurement_accuracy), 0},
{offsetof(struct acpi_battery, max_sampling_time), 0},
{offsetof(struct acpi_battery, min_sampling_time), 0},
{offsetof(struct acpi_battery, max_averaging_interval), 0},
{offsetof(struct acpi_battery, min_averaging_interval), 0},
{offsetof(struct acpi_battery, capacity_granularity_1), 0},
{offsetof(struct acpi_battery, capacity_granularity_2), 0},
{offsetof(struct acpi_battery, model_number), 1},
{offsetof(struct acpi_battery, serial_number), 1},
{offsetof(struct acpi_battery, type), 1},
{offsetof(struct acpi_battery, oem_info), 1},
};
static int extract_package(struct acpi_battery *battery,
union acpi_object *package,
struct acpi_offsets *offsets, int num)
@ -350,22 +388,29 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
{
int result = -EFAULT;
acpi_status status = 0;
char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags)?
"_BIX" : "_BIF";
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
if (!acpi_battery_present(battery))
return 0;
mutex_lock(&battery->lock);
status = acpi_evaluate_object(battery->device->handle, "_BIF",
NULL, &buffer);
status = acpi_evaluate_object(battery->device->handle, name,
NULL, &buffer);
mutex_unlock(&battery->lock);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", name));
return -ENODEV;
}
result = extract_package(battery, buffer.pointer,
info_offsets, ARRAY_SIZE(info_offsets));
if (test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags))
result = extract_package(battery, buffer.pointer,
extended_info_offsets,
ARRAY_SIZE(extended_info_offsets));
else
result = extract_package(battery, buffer.pointer,
info_offsets, ARRAY_SIZE(info_offsets));
kfree(buffer.pointer);
return result;
}
@ -399,7 +444,7 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
battery->update_time = jiffies;
kfree(buffer.pointer);
if ((battery->quirks & QUIRK_SIGNED16_CURRENT) &&
if (test_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags) &&
battery->rate_now != -1)
battery->rate_now = abs((s16)battery->rate_now);
@ -412,7 +457,8 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery)
union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
if (!acpi_battery_present(battery)|| !battery->alarm_present)
if (!acpi_battery_present(battery) ||
!test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags))
return -ENODEV;
arg0.integer.value = battery->alarm;
@ -437,10 +483,10 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
/* See if alarms are supported, and if so, set default */
status = acpi_get_handle(battery->device->handle, "_BTP", &handle);
if (ACPI_FAILURE(status)) {
battery->alarm_present = 0;
clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags);
return 0;
}
battery->alarm_present = 1;
set_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags);
if (!battery->alarm)
battery->alarm = battery->design_capacity_warning;
return acpi_battery_set_alarm(battery);
@ -510,9 +556,8 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
static void acpi_battery_quirks(struct acpi_battery *battery)
{
battery->quirks = 0;
if (dmi_name_in_vendors("Acer") && battery->power_unit) {
battery->quirks |= QUIRK_SIGNED16_CURRENT;
set_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags);
}
}
@ -590,6 +635,7 @@ static int acpi_battery_print_info(struct seq_file *seq, int result)
seq_printf(seq, "design capacity low: %d %sh\n",
battery->design_capacity_low,
acpi_battery_units(battery));
seq_printf(seq, "cycle count: %i\n", battery->cycle_count);
seq_printf(seq, "capacity granularity 1: %d %sh\n",
battery->capacity_granularity_1,
acpi_battery_units(battery));
@ -841,6 +887,7 @@ static int acpi_battery_add(struct acpi_device *device)
{
int result = 0;
struct acpi_battery *battery = NULL;
acpi_handle handle;
if (!device)
return -EINVAL;
battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
@ -851,6 +898,9 @@ static int acpi_battery_add(struct acpi_device *device)
strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
device->driver_data = battery;
mutex_init(&battery->lock);
if (ACPI_SUCCESS(acpi_get_handle(battery->device->handle,
"_BIX", &handle)))
set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags);
acpi_battery_update(battery);
#ifdef CONFIG_ACPI_PROCFS_POWER
result = acpi_battery_add_fs(device);

10
drivers/acpi/bus.c
View file

@ -190,16 +190,16 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
* Get the device's power state either directly (via _PSC) or
* indirectly (via power resources).
*/
if (device->power.flags.explicit_get) {
if (device->power.flags.power_resources) {
result = acpi_power_get_inferred_state(device);
if (result)
return result;
} else if (device->power.flags.explicit_get) {
status = acpi_evaluate_integer(device->handle, "_PSC",
NULL, &psc);
if (ACPI_FAILURE(status))
return -ENODEV;
device->power.state = (int)psc;
} else if (device->power.flags.power_resources) {
result = acpi_power_get_inferred_state(device);
if (result)
return result;
}
*state = device->power.state;

2
drivers/acpi/dock.c
View file

@ -605,7 +605,7 @@ register_hotplug_dock_device(acpi_handle handle, struct acpi_dock_ops *ops,
list_for_each_entry(dock_station, &dock_stations, sibling) {
/*
* An ATA bay can be in a dock and itself can be ejected
* seperately, so there are two 'dock stations' which need the
* separately, so there are two 'dock stations' which need the
* ops
*/
dd = find_dock_dependent_device(dock_station, handle);

33
drivers/acpi/ec.c
View file

@ -76,8 +76,9 @@ enum ec_command {
enum {
EC_FLAGS_QUERY_PENDING, /* Query is pending */
EC_FLAGS_GPE_STORM, /* GPE storm detected */
EC_FLAGS_HANDLERS_INSTALLED /* Handlers for GPE and
EC_FLAGS_HANDLERS_INSTALLED, /* Handlers for GPE and
* OpReg are installed */
EC_FLAGS_FROZEN, /* Transactions are suspended */
};
/* If we find an EC via the ECDT, we need to keep a ptr to its context */
@ -291,6 +292,10 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
if (t->rdata)
memset(t->rdata, 0, t->rlen);
mutex_lock(&ec->lock);
if (test_bit(EC_FLAGS_FROZEN, &ec->flags)) {
status = -EINVAL;
goto unlock;
}
if (ec->global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status)) {
@ -453,6 +458,32 @@ int ec_transaction(u8 command,
EXPORT_SYMBOL(ec_transaction);
void acpi_ec_suspend_transactions(void)
{
struct acpi_ec *ec = first_ec;
if (!ec)
return;
mutex_lock(&ec->lock);
/* Prevent transactions from being carried out */
set_bit(EC_FLAGS_FROZEN, &ec->flags);
mutex_unlock(&ec->lock);
}
void acpi_ec_resume_transactions(void)
{
struct acpi_ec *ec = first_ec;
if (!ec)
return;
mutex_lock(&ec->lock);
/* Allow transactions to be carried out again */
clear_bit(EC_FLAGS_FROZEN, &ec->flags);
mutex_unlock(&ec->lock);
}
static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 * data)
{
int result;

2
drivers/acpi/internal.h
View file

@ -49,6 +49,8 @@ void acpi_early_processor_set_pdc(void);
int acpi_ec_init(void);
int acpi_ec_ecdt_probe(void);
int acpi_boot_ec_enable(void);
void acpi_ec_suspend_transactions(void);
void acpi_ec_resume_transactions(void);
/*--------------------------------------------------------------------------
Suspend/Resume

4
drivers/acpi/numa.c
View file

@ -279,9 +279,9 @@ int __init acpi_numa_init(void)
/* SRAT: Static Resource Affinity Table */
if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY,
acpi_parse_x2apic_affinity, NR_CPUS);
acpi_parse_x2apic_affinity, nr_cpu_ids);
acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
acpi_parse_processor_affinity, NR_CPUS);
acpi_parse_processor_affinity, nr_cpu_ids);
ret = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
acpi_parse_memory_affinity,
NR_NODE_MEMBLKS);

2
drivers/acpi/proc.c
View file

@ -435,7 +435,7 @@ acpi_system_write_wakeup_device(struct file *file,
found_dev->wakeup.gpe_device)) {
printk(KERN_WARNING
"ACPI: '%s' and '%s' have the same GPE, "
"can't disable/enable one seperately\n",
"can't disable/enable one separately\n",
dev->pnp.bus_id, found_dev->pnp.bus_id);
dev->wakeup.state.enabled =
found_dev->wakeup.state.enabled;

1142
drivers/acpi/processor_core.c
View file

File diff suppressed because it is too large Load diff

978
drivers/acpi/processor_driver.c Normal file
View file

@ -0,0 +1,978 @@
/*
* acpi_processor.c - ACPI Processor Driver ($Revision: 71 $)
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
* Copyright (C) 2004 Dominik Brodowski <linux@brodo.de>
* Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
* - Added processor hotplug support
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* 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.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* TBD:
* 1. Make # power states dynamic.
* 2. Support duty_cycle values that span bit 4.
* 3. Optimize by having scheduler determine business instead of
* having us try to calculate it here.
* 4. Need C1 timing -- must modify kernel (IRQ handler) to get this.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/cpufreq.h>
#include <linux/cpu.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/dmi.h>
#include <linux/moduleparam.h>
#include <linux/cpuidle.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/cpu.h>
#include <asm/delay.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/smp.h>
#include <asm/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#include <acpi/processor.h>
#define PREFIX "ACPI: "
#define ACPI_PROCESSOR_CLASS "processor"
#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
#define ACPI_PROCESSOR_FILE_INFO "info"
#define ACPI_PROCESSOR_FILE_THROTTLING "throttling"
#define ACPI_PROCESSOR_FILE_LIMIT "limit"
#define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80
#define ACPI_PROCESSOR_NOTIFY_POWER 0x81
#define ACPI_PROCESSOR_NOTIFY_THROTTLING 0x82
#define ACPI_PROCESSOR_LIMIT_USER 0
#define ACPI_PROCESSOR_LIMIT_THERMAL 1
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_driver");
MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_DESCRIPTION("ACPI Processor Driver");
MODULE_LICENSE("GPL");
static int acpi_processor_add(struct acpi_device *device);
static int acpi_processor_remove(struct acpi_device *device, int type);
#ifdef CONFIG_ACPI_PROCFS
static int acpi_processor_info_open_fs(struct inode *inode, struct file *file);
#endif
static void acpi_processor_notify(struct acpi_device *device, u32 event);
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu);
static int acpi_processor_handle_eject(struct acpi_processor *pr);
static const struct acpi_device_id processor_device_ids[] = {
{ACPI_PROCESSOR_OBJECT_HID, 0},
{"ACPI0007", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, processor_device_ids);
static struct acpi_driver acpi_processor_driver = {
.name = "processor",
.class = ACPI_PROCESSOR_CLASS,
.ids = processor_device_ids,
.ops = {
.add = acpi_processor_add,
.remove = acpi_processor_remove,
.suspend = acpi_processor_suspend,
.resume = acpi_processor_resume,
.notify = acpi_processor_notify,
},
};
#define INSTALL_NOTIFY_HANDLER 1
#define UNINSTALL_NOTIFY_HANDLER 2
#ifdef CONFIG_ACPI_PROCFS
static const struct file_operations acpi_processor_info_fops = {
.owner = THIS_MODULE,
.open = acpi_processor_info_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
#endif
DEFINE_PER_CPU(struct acpi_processor *, processors);
EXPORT_PER_CPU_SYMBOL(processors);
struct acpi_processor_errata errata __read_mostly;
/* --------------------------------------------------------------------------
Errata Handling
-------------------------------------------------------------------------- */
static int acpi_processor_errata_piix4(struct pci_dev *dev)
{
u8 value1 = 0;
u8 value2 = 0;
if (!dev)
return -EINVAL;
/*
* Note that 'dev' references the PIIX4 ACPI Controller.
*/
switch (dev->revision) {
case 0:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
break;
case 1:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 B-step\n"));
break;
case 2:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4E\n"));
break;
case 3:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4M\n"));
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unknown PIIX4\n"));
break;
}
switch (dev->revision) {
case 0: /* PIIX4 A-step */
case 1: /* PIIX4 B-step */
/*
* See specification changes #13 ("Manual Throttle Duty Cycle")
* and #14 ("Enabling and Disabling Manual Throttle"), plus
* erratum #5 ("STPCLK# Deassertion Time") from the January
* 2002 PIIX4 specification update. Applies to only older
* PIIX4 models.
*/
errata.piix4.throttle = 1;
case 2: /* PIIX4E */
case 3: /* PIIX4M */
/*
* See erratum #18 ("C3 Power State/BMIDE and Type-F DMA
* Livelock") from the January 2002 PIIX4 specification update.
* Applies to all PIIX4 models.
*/
/*
* BM-IDE
* ------
* Find the PIIX4 IDE Controller and get the Bus Master IDE
* Status register address. We'll use this later to read
* each IDE controller's DMA status to make sure we catch all
* DMA activity.
*/
dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82371AB,
PCI_ANY_ID, PCI_ANY_ID, NULL);
if (dev) {
errata.piix4.bmisx = pci_resource_start(dev, 4);
pci_dev_put(dev);
}
/*
* Type-F DMA
* ----------
* Find the PIIX4 ISA Controller and read the Motherboard
* DMA controller's status to see if Type-F (Fast) DMA mode
* is enabled (bit 7) on either channel. Note that we'll
* disable C3 support if this is enabled, as some legacy
* devices won't operate well if fast DMA is disabled.
*/
dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82371AB_0,
PCI_ANY_ID, PCI_ANY_ID, NULL);
if (dev) {
pci_read_config_byte(dev, 0x76, &value1);
pci_read_config_byte(dev, 0x77, &value2);
if ((value1 & 0x80) || (value2 & 0x80))
errata.piix4.fdma = 1;
pci_dev_put(dev);
}
break;
}
if (errata.piix4.bmisx)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Bus master activity detection (BM-IDE) erratum enabled\n"));
if (errata.piix4.fdma)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Type-F DMA livelock erratum (C3 disabled)\n"));
return 0;
}
static int acpi_processor_errata(struct acpi_processor *pr)
{
int result = 0;
struct pci_dev *dev = NULL;
if (!pr)
return -EINVAL;
/*
* PIIX4
*/
dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82371AB_3, PCI_ANY_ID,
PCI_ANY_ID, NULL);
if (dev) {
result = acpi_processor_errata_piix4(dev);
pci_dev_put(dev);
}
return result;
}
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_PROCFS
static struct proc_dir_entry *acpi_processor_dir = NULL;
static int acpi_processor_info_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_processor *pr = seq->private;
if (!pr)
goto end;
seq_printf(seq, "processor id: %d\n"
"acpi id: %d\n"
"bus mastering control: %s\n"
"power management: %s\n"
"throttling control: %s\n"
"limit interface: %s\n",
pr->id,
pr->acpi_id,
pr->flags.bm_control ? "yes" : "no",
pr->flags.power ? "yes" : "no",
pr->flags.throttling ? "yes" : "no",
pr->flags.limit ? "yes" : "no");
end:
return 0;
}
static int acpi_processor_info_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_processor_info_seq_show,
PDE(inode)->data);
}
static int __cpuinit acpi_processor_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_processor_dir);
if (!acpi_device_dir(device))
return -ENODEV;
}
/* 'info' [R] */
entry = proc_create_data(ACPI_PROCESSOR_FILE_INFO,
S_IRUGO, acpi_device_dir(device),
&acpi_processor_info_fops,
acpi_driver_data(device));
if (!entry)
return -EIO;
/* 'throttling' [R/W] */
entry = proc_create_data(ACPI_PROCESSOR_FILE_THROTTLING,
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device),
&acpi_processor_throttling_fops,
acpi_driver_data(device));
if (!entry)
return -EIO;
/* 'limit' [R/W] */
entry = proc_create_data(ACPI_PROCESSOR_FILE_LIMIT,
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device),
&acpi_processor_limit_fops,
acpi_driver_data(device));
if (!entry)
return -EIO;
return 0;
}
static int acpi_processor_remove_fs(struct acpi_device *device)
{
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_PROCESSOR_FILE_INFO,
acpi_device_dir(device));
remove_proc_entry(ACPI_PROCESSOR_FILE_THROTTLING,
acpi_device_dir(device));
remove_proc_entry(ACPI_PROCESSOR_FILE_LIMIT,
acpi_device_dir(device));
remove_proc_entry(acpi_device_bid(device), acpi_processor_dir);
acpi_device_dir(device) = NULL;
}
return 0;
}
#else
static inline int acpi_processor_add_fs(struct acpi_device *device)
{
return 0;
}
static inline int acpi_processor_remove_fs(struct acpi_device *device)
{
return 0;
}
#endif
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
static int acpi_processor_get_info(struct acpi_device *device)
{
acpi_status status = 0;
union acpi_object object = { 0 };
struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
struct acpi_processor *pr;
int cpu_index, device_declaration = 0;
static int cpu0_initialized;
pr = acpi_driver_data(device);
if (!pr)
return -EINVAL;
if (num_online_cpus() > 1)
errata.smp = TRUE;
acpi_processor_errata(pr);
/*
* Check to see if we have bus mastering arbitration control. This
* is required for proper C3 usage (to maintain cache coherency).
*/
if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
pr->flags.bm_control = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Bus mastering arbitration control present\n"));
} else
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No bus mastering arbitration control\n"));
if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
/* Declared with "Processor" statement; match ProcessorID */
status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX "Evaluating processor object\n");
return -ENODEV;
}
/*
* TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
* >>> 'acpi_get_processor_id(acpi_id, &id)' in
* arch/xxx/acpi.c
*/
pr->acpi_id = object.processor.proc_id;
} else {
/*
* Declared with "Device" statement; match _UID.
* Note that we don't handle string _UIDs yet.
*/
unsigned long long value;
status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
NULL, &value);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX
"Evaluating processor _UID [%#x]\n", status);
return -ENODEV;
}
device_declaration = 1;
pr->acpi_id = value;
}
cpu_index = acpi_get_cpuid(pr->handle, device_declaration, pr->acpi_id);
/* Handle UP system running SMP kernel, with no LAPIC in MADT */
if (!cpu0_initialized && (cpu_index == -1) &&
(num_online_cpus() == 1)) {
cpu_index = 0;
}
cpu0_initialized = 1;
pr->id = cpu_index;
/*
* Extra Processor objects may be enumerated on MP systems with
* less than the max # of CPUs. They should be ignored _iff
* they are physically not present.
*/
if (pr->id == -1) {
if (ACPI_FAILURE
(acpi_processor_hotadd_init(pr->handle, &pr->id))) {
return -ENODEV;
}
}
/*
* On some boxes several processors use the same processor bus id.
* But they are located in different scope. For example:
* \_SB.SCK0.CPU0
* \_SB.SCK1.CPU0
* Rename the processor device bus id. And the new bus id will be
* generated as the following format:
* CPU+CPU ID.
*/
sprintf(acpi_device_bid(device), "CPU%X", pr->id);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
pr->acpi_id));
if (!object.processor.pblk_address)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
else if (object.processor.pblk_length != 6)
printk(KERN_ERR PREFIX "Invalid PBLK length [%d]\n",
object.processor.pblk_length);
else {
pr->throttling.address = object.processor.pblk_address;
pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
pr->pblk = object.processor.pblk_address;
/*
* We don't care about error returns - we just try to mark
* these reserved so that nobody else is confused into thinking
* that this region might be unused..
*
* (In particular, allocating the IO range for Cardbus)
*/
request_region(pr->throttling.address, 6, "ACPI CPU throttle");
}
/*
* If ACPI describes a slot number for this CPU, we can use it
* ensure we get the right value in the "physical id" field
* of /proc/cpuinfo
*/
status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
if (ACPI_SUCCESS(status))
arch_fix_phys_package_id(pr->id, object.integer.value);
return 0;
}
static DEFINE_PER_CPU(void *, processor_device_array);
static void acpi_processor_notify(struct acpi_device *device, u32 event)
{
struct acpi_processor *pr = acpi_driver_data(device);
int saved;
if (!pr)
return;
switch (event) {
case ACPI_PROCESSOR_NOTIFY_PERFORMANCE:
saved = pr->performance_platform_limit;
acpi_processor_ppc_has_changed(pr, 1);
if (saved == pr->performance_platform_limit)
break;
acpi_bus_generate_proc_event(device, event,
pr->performance_platform_limit);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event,
pr->performance_platform_limit);
break;
case ACPI_PROCESSOR_NOTIFY_POWER:
acpi_processor_cst_has_changed(pr);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
break;
case ACPI_PROCESSOR_NOTIFY_THROTTLING:
acpi_processor_tstate_has_changed(pr);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
break;
}
return;
}
static int acpi_cpu_soft_notify(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
struct acpi_processor *pr = per_cpu(processors, cpu);
if (action == CPU_ONLINE && pr) {
acpi_processor_ppc_has_changed(pr, 0);
acpi_processor_cst_has_changed(pr);
acpi_processor_tstate_has_changed(pr);
}
return NOTIFY_OK;
}
static struct notifier_block acpi_cpu_notifier =
{
.notifier_call = acpi_cpu_soft_notify,
};
static int __cpuinit acpi_processor_add(struct acpi_device *device)
{
struct acpi_processor *pr = NULL;
int result = 0;
struct sys_device *sysdev;
pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
if (!pr)
return -ENOMEM;
if (!zalloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
kfree(pr);
return -ENOMEM;
}
pr->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
device->driver_data = pr;
result = acpi_processor_get_info(device);
if (result) {
/* Processor is physically not present */
return 0;
}
BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0));
/*
* Buggy BIOS check
* ACPI id of processors can be reported wrongly by the BIOS.
* Don't trust it blindly
*/
if (per_cpu(processor_device_array, pr->id) != NULL &&
per_cpu(processor_device_array, pr->id) != device) {
printk(KERN_WARNING "BIOS reported wrong ACPI id "
"for the processor\n");
result = -ENODEV;
goto err_free_cpumask;
}
per_cpu(processor_device_array, pr->id) = device;
per_cpu(processors, pr->id) = pr;
result = acpi_processor_add_fs(device);
if (result)
goto err_free_cpumask;
sysdev = get_cpu_sysdev(pr->id);
if (sysfs_create_link(&device->dev.kobj, &sysdev->kobj, "sysdev")) {
result = -EFAULT;
goto err_remove_fs;
}
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr, 0);
#endif
acpi_processor_get_throttling_info(pr);
acpi_processor_get_limit_info(pr);
acpi_processor_power_init(pr, device);
pr->cdev = thermal_cooling_device_register("Processor", device,
&processor_cooling_ops);
if (IS_ERR(pr->cdev)) {
result = PTR_ERR(pr->cdev);
goto err_power_exit;
}
dev_dbg(&device->dev, "registered as cooling_device%d\n",
pr->cdev->id);
result = sysfs_create_link(&device->dev.kobj,
&pr->cdev->device.kobj,
"thermal_cooling");
if (result) {
printk(KERN_ERR PREFIX "Create sysfs link\n");
goto err_thermal_unregister;
}
result = sysfs_create_link(&pr->cdev->device.kobj,
&device->dev.kobj,
"device");
if (result) {
printk(KERN_ERR PREFIX "Create sysfs link\n");
goto err_remove_sysfs;
}
return 0;
err_remove_sysfs:
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
err_thermal_unregister:
thermal_cooling_device_unregister(pr->cdev);
err_power_exit:
acpi_processor_power_exit(pr, device);
err_remove_fs:
acpi_processor_remove_fs(device);
err_free_cpumask:
free_cpumask_var(pr->throttling.shared_cpu_map);
return result;
}
static int acpi_processor_remove(struct acpi_device *device, int type)
{
struct acpi_processor *pr = NULL;
if (!device || !acpi_driver_data(device))
return -EINVAL;
pr = acpi_driver_data(device);
if (pr->id >= nr_cpu_ids)
goto free;
if (type == ACPI_BUS_REMOVAL_EJECT) {
if (acpi_processor_handle_eject(pr))
return -EINVAL;
}
acpi_processor_power_exit(pr, device);
sysfs_remove_link(&device->dev.kobj, "sysdev");
acpi_processor_remove_fs(device);
if (pr->cdev) {
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
sysfs_remove_link(&pr->cdev->device.kobj, "device");
thermal_cooling_device_unregister(pr->cdev);
pr->cdev = NULL;
}
per_cpu(processors, pr->id) = NULL;
per_cpu(processor_device_array, pr->id) = NULL;
free:
free_cpumask_var(pr->throttling.shared_cpu_map);
kfree(pr);
return 0;
}
#ifdef CONFIG_ACPI_HOTPLUG_CPU
/****************************************************************************
* Acpi processor hotplug support *
****************************************************************************/
static int is_processor_present(acpi_handle handle)
{
acpi_status status;
unsigned long long sta = 0;
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
return 1;
/*
* _STA is mandatory for a processor that supports hot plug
*/
if (status == AE_NOT_FOUND)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Processor does not support hot plug\n"));
else
ACPI_EXCEPTION((AE_INFO, status,
"Processor Device is not present"));
return 0;
}
static
int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
{
acpi_handle phandle;
struct acpi_device *pdev;
if (acpi_get_parent(handle, &phandle)) {
return -ENODEV;
}
if (acpi_bus_get_device(phandle, &pdev)) {
return -ENODEV;
}
if (acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_PROCESSOR)) {
return -ENODEV;
}
return 0;
}
static void __ref acpi_processor_hotplug_notify(acpi_handle handle,
u32 event, void *data)
{
struct acpi_processor *pr;
struct acpi_device *device = NULL;
int result;
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Processor driver received %s event\n",
(event == ACPI_NOTIFY_BUS_CHECK) ?
"ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"));
if (!is_processor_present(handle))
break;
if (acpi_bus_get_device(handle, &device)) {
result = acpi_processor_device_add(handle, &device);
if (result)
printk(KERN_ERR PREFIX
"Unable to add the device\n");
break;
}
break;
case ACPI_NOTIFY_EJECT_REQUEST:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"received ACPI_NOTIFY_EJECT_REQUEST\n"));
if (acpi_bus_get_device(handle, &device)) {
printk(KERN_ERR PREFIX
"Device don't exist, dropping EJECT\n");
break;
}
pr = acpi_driver_data(device);
if (!pr) {
printk(KERN_ERR PREFIX
"Driver data is NULL, dropping EJECT\n");
return;
}
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
break;
}
return;
}
static acpi_status
processor_walk_namespace_cb(acpi_handle handle,
u32 lvl, void *context, void **rv)
{
acpi_status status;
int *action = context;
acpi_object_type type = 0;
status = acpi_get_type(handle, &type);
if (ACPI_FAILURE(status))
return (AE_OK);
if (type != ACPI_TYPE_PROCESSOR)
return (AE_OK);
switch (*action) {
case INSTALL_NOTIFY_HANDLER:
acpi_install_notify_handler(handle,
ACPI_SYSTEM_NOTIFY,
acpi_processor_hotplug_notify,
NULL);
break;
case UNINSTALL_NOTIFY_HANDLER:
acpi_remove_notify_handler(handle,
ACPI_SYSTEM_NOTIFY,
acpi_processor_hotplug_notify);
break;
default:
break;
}
return (AE_OK);
}
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu)
{
if (!is_processor_present(handle)) {
return AE_ERROR;
}
if (acpi_map_lsapic(handle, p_cpu))
return AE_ERROR;
if (arch_register_cpu(*p_cpu)) {
acpi_unmap_lsapic(*p_cpu);
return AE_ERROR;
}
return AE_OK;
}
static int acpi_processor_handle_eject(struct acpi_processor *pr)
{
if (cpu_online(pr->id))
cpu_down(pr->id);
arch_unregister_cpu(pr->id);
acpi_unmap_lsapic(pr->id);
return (0);
}
#else
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu)
{
return AE_ERROR;
}
static int acpi_processor_handle_eject(struct acpi_processor *pr)
{
return (-EINVAL);
}
#endif
static
void acpi_processor_install_hotplug_notify(void)
{
#ifdef CONFIG_ACPI_HOTPLUG_CPU
int action = INSTALL_NOTIFY_HANDLER;
acpi_walk_namespace(ACPI_TYPE_PROCESSOR,
ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
processor_walk_namespace_cb, NULL, &action, NULL);
#endif
register_hotcpu_notifier(&acpi_cpu_notifier);
}
static
void acpi_processor_uninstall_hotplug_notify(void)
{
#ifdef CONFIG_ACPI_HOTPLUG_CPU
int action = UNINSTALL_NOTIFY_HANDLER;
acpi_walk_namespace(ACPI_TYPE_PROCESSOR,
ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
processor_walk_namespace_cb, NULL, &action, NULL);
#endif
unregister_hotcpu_notifier(&acpi_cpu_notifier);
}
/*
* We keep the driver loaded even when ACPI is not running.
* This is needed for the powernow-k8 driver, that works even without
* ACPI, but needs symbols from this driver
*/
static int __init acpi_processor_init(void)
{
int result = 0;
if (acpi_disabled)
return 0;
memset(&errata, 0, sizeof(errata));
#ifdef CONFIG_ACPI_PROCFS
acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir);
if (!acpi_processor_dir)
return -ENOMEM;
#endif
result = cpuidle_register_driver(&acpi_idle_driver);
if (result < 0)
goto out_proc;
result = acpi_bus_register_driver(&acpi_processor_driver);
if (result < 0)
goto out_cpuidle;
acpi_processor_install_hotplug_notify();
acpi_thermal_cpufreq_init();
acpi_processor_ppc_init();
acpi_processor_throttling_init();
return 0;
out_cpuidle:
cpuidle_unregister_driver(&acpi_idle_driver);
out_proc:
#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
#endif
return result;
}
static void __exit acpi_processor_exit(void)
{
if (acpi_disabled)
return;
acpi_processor_ppc_exit();
acpi_thermal_cpufreq_exit();
acpi_processor_uninstall_hotplug_notify();
acpi_bus_unregister_driver(&acpi_processor_driver);
cpuidle_unregister_driver(&acpi_idle_driver);
#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
#endif
return;
}
module_init(acpi_processor_init);
module_exit(acpi_processor_exit);
EXPORT_SYMBOL(acpi_processor_set_thermal_limit);
MODULE_ALIAS("processor");

209
drivers/acpi/processor_pdc.c
View file

@ -1,209 +0,0 @@
/*
* Copyright (C) 2005 Intel Corporation
* Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
*
* Alex Chiang <achiang@hp.com>
* - Unified x86/ia64 implementations
* Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
* - Added _PDC for platforms with Intel CPUs
*/
#include <linux/dmi.h>
#include <acpi/acpi_drivers.h>
#include <acpi/processor.h>
#include "internal.h"
#define PREFIX "ACPI: "
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_pdc");
static int set_no_mwait(const struct dmi_system_id *id)
{
printk(KERN_NOTICE PREFIX "%s detected - "
"disabling mwait for CPU C-states\n", id->ident);
idle_nomwait = 1;
return 0;
}
static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = {
{
set_no_mwait, "IFL91 board", {
DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
DMI_MATCH(DMI_SYS_VENDOR, "ZEPTO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "3215W"),
DMI_MATCH(DMI_BOARD_NAME, "IFL91") }, NULL},
{
set_no_mwait, "Extensa 5220", {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
{},
};
static void acpi_set_pdc_bits(u32 *buf)
{
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
/* Enable coordination with firmware's _TSD info */
buf[2] = ACPI_PDC_SMP_T_SWCOORD;
/* Twiddle arch-specific bits needed for _PDC */
arch_acpi_set_pdc_bits(buf);
}
static struct acpi_object_list *acpi_processor_alloc_pdc(void)
{
struct acpi_object_list *obj_list;
union acpi_object *obj;
u32 *buf;
/* allocate and initialize pdc. It will be used later. */
obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
if (!obj_list) {
printk(KERN_ERR "Memory allocation error\n");
return NULL;
}
obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
if (!obj) {
printk(KERN_ERR "Memory allocation error\n");
kfree(obj_list);
return NULL;
}
buf = kmalloc(12, GFP_KERNEL);
if (!buf) {
printk(KERN_ERR "Memory allocation error\n");
kfree(obj);
kfree(obj_list);
return NULL;
}
acpi_set_pdc_bits(buf);
obj->type = ACPI_TYPE_BUFFER;
obj->buffer.length = 12;
obj->buffer.pointer = (u8 *) buf;
obj_list->count = 1;
obj_list->pointer = obj;
return obj_list;
}
/*
* _PDC is required for a BIOS-OS handshake for most of the newer
* ACPI processor features.
*/
static int
acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
{
acpi_status status = AE_OK;
if (idle_nomwait) {
/*
* If mwait is disabled for CPU C-states, the C2C3_FFH access
* mode will be disabled in the parameter of _PDC object.
* Of course C1_FFH access mode will also be disabled.
*/
union acpi_object *obj;
u32 *buffer = NULL;
obj = pdc_in->pointer;
buffer = (u32 *)(obj->buffer.pointer);
buffer[2] &= ~(ACPI_PDC_C_C2C3_FFH | ACPI_PDC_C_C1_FFH);
}
status = acpi_evaluate_object(handle, "_PDC", pdc_in, NULL);
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Could not evaluate _PDC, using legacy perf. control.\n"));
return status;
}
static int early_pdc_done;
void acpi_processor_set_pdc(acpi_handle handle)
{
struct acpi_object_list *obj_list;
if (arch_has_acpi_pdc() == false)
return;
if (early_pdc_done)
return;
obj_list = acpi_processor_alloc_pdc();
if (!obj_list)
return;
acpi_processor_eval_pdc(handle, obj_list);
kfree(obj_list->pointer->buffer.pointer);
kfree(obj_list->pointer);
kfree(obj_list);
}
EXPORT_SYMBOL_GPL(acpi_processor_set_pdc);
static int early_pdc_optin;
static int set_early_pdc_optin(const struct dmi_system_id *id)
{
early_pdc_optin = 1;
return 0;
}
static int param_early_pdc_optin(char *s)
{
early_pdc_optin = 1;
return 1;
}
__setup("acpi_early_pdc_eval", param_early_pdc_optin);
static struct dmi_system_id __cpuinitdata early_pdc_optin_table[] = {
{
set_early_pdc_optin, "HP Envy", {
DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Envy") }, NULL},
{
set_early_pdc_optin, "HP Pavilion dv6", {
DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6") }, NULL},
{
set_early_pdc_optin, "HP Pavilion dv7", {
DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7") }, NULL},
{},
};
static acpi_status
early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv)
{
acpi_processor_set_pdc(handle);
return AE_OK;
}
void __init acpi_early_processor_set_pdc(void)
{
/*
* Check whether the system is DMI table. If yes, OSPM
* should not use mwait for CPU-states.
*/
dmi_check_system(processor_idle_dmi_table);
/*
* Allow systems to opt-in to early _PDC evaluation.
*/
dmi_check_system(early_pdc_optin_table);
if (!early_pdc_optin)
return;
acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
early_init_pdc, NULL, NULL, NULL);
early_pdc_done = 1;
}

2
drivers/acpi/processor_perflib.c
View file

@ -561,7 +561,7 @@ end:
}
int acpi_processor_preregister_performance(
struct acpi_processor_performance *performance)
struct acpi_processor_performance __percpu *performance)
{
int count, count_target;
int retval = 0;

3
drivers/acpi/processor_throttling.c
View file

@ -1133,9 +1133,6 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
int result = 0;
struct acpi_processor_throttling *pthrottling;
if (!pr)
return -EINVAL;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n",
pr->throttling.address,

5
drivers/acpi/sbs.c
View file

@ -217,6 +217,9 @@ static int acpi_sbs_battery_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = acpi_battery_technology(battery);
break;
case POWER_SUPPLY_PROP_CYCLE_COUNT:
val->intval = battery->cycle_count;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = battery->design_voltage *
acpi_battery_vscale(battery) * 1000;
@ -276,6 +279,7 @@ static enum power_supply_property sbs_charge_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
@ -560,6 +564,7 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset)
battery->design_voltage * acpi_battery_vscale(battery));
seq_printf(seq, "design capacity warning: unknown\n");
seq_printf(seq, "design capacity low: unknown\n");
seq_printf(seq, "cycle count: %i\n", battery->cycle_count);
seq_printf(seq, "capacity granularity 1: unknown\n");
seq_printf(seq, "capacity granularity 2: unknown\n");
seq_printf(seq, "model number: %s\n", battery->device_name);

19
drivers/acpi/sleep.c
View file

@ -552,8 +552,17 @@ static void acpi_hibernation_leave(void)
hibernate_nvs_restore();
}
static void acpi_pm_enable_gpes(void)
static int acpi_pm_pre_restore(void)
{
acpi_disable_all_gpes();
acpi_os_wait_events_complete(NULL);
acpi_ec_suspend_transactions();
return 0;
}
static void acpi_pm_restore_cleanup(void)
{
acpi_ec_resume_transactions();
acpi_enable_all_runtime_gpes();
}
@ -565,8 +574,8 @@ static struct platform_hibernation_ops acpi_hibernation_ops = {
.prepare = acpi_pm_prepare,
.enter = acpi_hibernation_enter,
.leave = acpi_hibernation_leave,
.pre_restore = acpi_pm_disable_gpes,
.restore_cleanup = acpi_pm_enable_gpes,
.pre_restore = acpi_pm_pre_restore,
.restore_cleanup = acpi_pm_restore_cleanup,
};
/**
@ -618,8 +627,8 @@ static struct platform_hibernation_ops acpi_hibernation_ops_old = {
.prepare = acpi_pm_disable_gpes,
.enter = acpi_hibernation_enter,
.leave = acpi_hibernation_leave,
.pre_restore = acpi_pm_disable_gpes,
.restore_cleanup = acpi_pm_enable_gpes,
.pre_restore = acpi_pm_pre_restore,
.restore_cleanup = acpi_pm_restore_cleanup,
.recover = acpi_pm_finish,
};
#endif /* CONFIG_HIBERNATION */

2
drivers/acpi/system.c
View file

@ -101,6 +101,7 @@ static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
struct acpi_table_header *header = NULL;
struct acpi_table_attr *attr = NULL;
sysfs_attr_init(&table_attr->attr.attr);
if (table_header->signature[0] != '\0')
memcpy(table_attr->name, table_header->signature,
ACPI_NAME_SIZE);
@ -475,6 +476,7 @@ void acpi_irq_stats_init(void)
goto fail;
strncpy(name, buffer, strlen(buffer) + 1);
sysfs_attr_init(&counter_attrs[i].attr);
counter_attrs[i].attr.name = name;
counter_attrs[i].attr.mode = 0644;
counter_attrs[i].show = counter_show;

36
drivers/acpi/thermal.c
View file

@ -368,7 +368,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
int valid = 0;
int i;
/* Critical Shutdown (required) */
/* Critical Shutdown */
if (flag & ACPI_TRIPS_CRITICAL) {
status = acpi_evaluate_integer(tz->device->handle,
"_CRT", NULL, &tmp);
@ -379,17 +379,19 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
* Below zero (Celsius) values clearly aren't right for sure..
* ... so lets discard those as invalid.
*/
if (ACPI_FAILURE(status) ||
tz->trips.critical.temperature <= 2732) {
if (ACPI_FAILURE(status)) {
tz->trips.critical.flags.valid = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No critical threshold\n"));
} else if (tmp <= 2732) {
printk(KERN_WARNING FW_BUG "Invalid critical threshold "
"(%llu)\n", tmp);
tz->trips.critical.flags.valid = 0;
ACPI_EXCEPTION((AE_INFO, status,
"No or invalid critical threshold"));
return -ENODEV;
} else {
tz->trips.critical.flags.valid = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found critical threshold [%lu]\n",
tz->trips.critical.temperature));
"Found critical threshold [%lu]\n",
tz->trips.critical.temperature));
}
if (tz->trips.critical.flags.valid == 1) {
if (crt == -1) {
@ -575,7 +577,23 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
{
return acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT);
int i, valid, ret = acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT);
if (ret)
return ret;
valid = tz->trips.critical.flags.valid |
tz->trips.hot.flags.valid |
tz->trips.passive.flags.valid;
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
valid |= tz->trips.active[i].flags.valid;
if (!valid) {
printk(KERN_WARNING FW_BUG "No valid trip found\n");
return -ENODEV;
}
return 0;
}
static void acpi_thermal_check(void *data)

45
drivers/acpi/utils.c
View file

@ -289,51 +289,6 @@ acpi_evaluate_integer(acpi_handle handle,
EXPORT_SYMBOL(acpi_evaluate_integer);
#if 0
acpi_status
acpi_evaluate_string(acpi_handle handle,
acpi_string pathname,
acpi_object_list * arguments, acpi_string * data)
{
acpi_status status = AE_OK;
acpi_object *element = NULL;
acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
if (!data)
return AE_BAD_PARAMETER;
status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
if (ACPI_FAILURE(status)) {
acpi_util_eval_error(handle, pathname, status);
return status;
}
element = (acpi_object *) buffer.pointer;
if ((element->type != ACPI_TYPE_STRING)
|| (element->type != ACPI_TYPE_BUFFER)
|| !element->string.length) {
acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
return AE_BAD_DATA;
}
*data = kzalloc(element->string.length + 1, GFP_KERNEL);
if (!data) {
printk(KERN_ERR PREFIX "Memory allocation\n");
return -ENOMEM;
}
memcpy(*data, element->string.pointer, element->string.length);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%s]\n", *data));
kfree(buffer.pointer);
return AE_OK;
}
#endif
acpi_status
acpi_evaluate_reference(acpi_handle handle,
acpi_string pathname,

28
drivers/acpi/video.c
View file

@ -327,7 +327,7 @@ static int acpi_video_device_lcd_set_level(struct acpi_video_device *device,
int level);
static int acpi_video_device_lcd_get_level_current(
struct acpi_video_device *device,
unsigned long long *level);
unsigned long long *level, int init);
static int acpi_video_get_next_level(struct acpi_video_device *device,
u32 level_current, u32 event);
static int acpi_video_switch_brightness(struct acpi_video_device *device,
@ -345,7 +345,7 @@ static int acpi_video_get_brightness(struct backlight_device *bd)
struct acpi_video_device *vd =
(struct acpi_video_device *)bl_get_data(bd);
if (acpi_video_device_lcd_get_level_current(vd, &cur_level))
if (acpi_video_device_lcd_get_level_current(vd, &cur_level, 0))
return -EINVAL;
for (i = 2; i < vd->brightness->count; i++) {
if (vd->brightness->levels[i] == cur_level)
@ -414,7 +414,7 @@ static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsig
unsigned long long level;
int offset;
if (acpi_video_device_lcd_get_level_current(video, &level))
if (acpi_video_device_lcd_get_level_current(video, &level, 0))
return -EINVAL;
for (offset = 2; offset < video->brightness->count; offset++)
if (level == video->brightness->levels[offset]) {
@ -609,7 +609,7 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
static int
acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
unsigned long long *level)
unsigned long long *level, int init)
{
acpi_status status = AE_OK;
int i;
@ -633,10 +633,16 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
device->brightness->curr = *level;
return 0;
}
/* BQC returned an invalid level. Stop using it. */
ACPI_WARNING((AE_INFO, "%s returned an invalid level",
buf));
device->cap._BQC = device->cap._BCQ = 0;
if (!init) {
/*
* BQC returned an invalid level.
* Stop using it.
*/
ACPI_WARNING((AE_INFO,
"%s returned an invalid level",
buf));
device->cap._BQC = device->cap._BCQ = 0;
}
} else {
/* Fixme:
* should we return an error or ignore this failure?
@ -892,7 +898,7 @@ acpi_video_init_brightness(struct acpi_video_device *device)
if (!device->cap._BQC)
goto set_level;
result = acpi_video_device_lcd_get_level_current(device, &level_old);
result = acpi_video_device_lcd_get_level_current(device, &level_old, 1);
if (result)
goto out_free_levels;
@ -903,7 +909,7 @@ acpi_video_init_brightness(struct acpi_video_device *device)
if (result)
goto out_free_levels;
result = acpi_video_device_lcd_get_level_current(device, &level);
result = acpi_video_device_lcd_get_level_current(device, &level, 0);
if (result)
goto out_free_levels;
@ -1996,7 +2002,7 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event)
goto out;
result = acpi_video_device_lcd_get_level_current(device,
&level_current);
&level_current, 0);
if (result)
goto out;

2
drivers/ata/libata-core.c
View file

@ -2232,7 +2232,7 @@ retry:
* Some drives were very specific about that exact sequence.
*
* Note that ATA4 says lba is mandatory so the second check
* shoud never trigger.
* should never trigger.
*/
if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) {
err_mask = ata_dev_init_params(dev, id[3], id[6]);

2
drivers/ata/libata-sff.c
View file

@ -2287,7 +2287,7 @@ EXPORT_SYMBOL_GPL(ata_sff_postreset);
* @qc: command
*
* Drain the FIFO and device of any stuck data following a command
* failing to complete. In some cases this is neccessary before a
* failing to complete. In some cases this is necessary before a
* reset will recover the device.
*
*/

2
drivers/ata/pata_acpi.c
View file

@ -161,7 +161,7 @@ static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
*
* Called when the libata layer is about to issue a command. We wrap
* this interface so that we can load the correct ATA timings if
* neccessary.
* necessary.
*/
static unsigned int pacpi_qc_issue(struct ata_queued_cmd *qc)

2
drivers/ata/pata_hpt3x3.c
View file

@ -180,7 +180,7 @@ static void hpt3x3_init_chipset(struct pci_dev *dev)
* @id: Entry in match table
*
* Perform basic initialisation. We set the device up so we access all
* ports via BAR4. This is neccessary to work around errata.
* ports via BAR4. This is necessary to work around errata.
*/
static int hpt3x3_init_one(struct pci_dev *pdev, const struct pci_device_id *id)

2
drivers/ata/pata_pcmcia.c
View file

@ -131,7 +131,7 @@ static unsigned int ata_data_xfer_8bit(struct ata_device *dev,
* @qc: command
*
* Drain the FIFO and device of any stuck data following a command
* failing to complete. In some cases this is neccessary before a
* failing to complete. In some cases this is necessary before a
* reset will recover the device.
*
*/

2
drivers/auxdisplay/cfag12864bfb.c
View file

@ -81,7 +81,7 @@ static struct fb_ops cfag12864bfb_ops = {
.fb_mmap = cfag12864bfb_mmap,
};
static int __init cfag12864bfb_probe(struct platform_device *device)
static int __devinit cfag12864bfb_probe(struct platform_device *device)
{
int ret = -EINVAL;
struct fb_info *info = framebuffer_alloc(0, &device->dev);

51
drivers/base/Kconfig
View file

@ -3,35 +3,50 @@ menu "Generic Driver Options"
config UEVENT_HELPER_PATH
string "path to uevent helper"
depends on HOTPLUG
default "/sbin/hotplug"
default ""
help
Path to uevent helper program forked by the kernel for
every uevent.
Before the switch to the netlink-based uevent source, this was
used to hook hotplug scripts into kernel device events. It
usually pointed to a shell script at /sbin/hotplug.
This should not be used today, because usual systems create
many events at bootup or device discovery in a very short time
frame. One forked process per event can create so many processes
that it creates a high system load, or on smaller systems
it is known to create out-of-memory situations during bootup.
config DEVTMPFS
bool "Create a kernel maintained /dev tmpfs (EXPERIMENTAL)"
bool "Maintain a devtmpfs filesystem to mount at /dev"
depends on HOTPLUG && SHMEM && TMPFS
help
This creates a tmpfs filesystem, and mounts it at bootup
and mounts it at /dev. The kernel driver core creates device
nodes for all registered devices in that filesystem. All device
nodes are owned by root and have the default mode of 0600.
Userspace can add and delete the nodes as needed. This is
intended to simplify bootup, and make it possible to delay
the initial coldplug at bootup done by udev in userspace.
It should also provide a simpler way for rescue systems
to bring up a kernel with dynamic major/minor numbers.
Meaningful symlinks, permissions and device ownership must
still be handled by userspace.
If unsure, say N here.
This creates a tmpfs filesystem instance early at bootup.
In this filesystem, the kernel driver core maintains device
nodes with their default names and permissions for all
registered devices with an assigned major/minor number.
Userspace can modify the filesystem content as needed, add
symlinks, and apply needed permissions.
It provides a fully functional /dev directory, where usually
udev runs on top, managing permissions and adding meaningful
symlinks.
In very limited environments, it may provide a sufficient
functional /dev without any further help. It also allows simple
rescue systems, and reliably handles dynamic major/minor numbers.
config DEVTMPFS_MOUNT
bool "Automount devtmpfs at /dev"
bool "Automount devtmpfs at /dev, after the kernel mounted the rootfs"
depends on DEVTMPFS
help
This will mount devtmpfs at /dev if the kernel mounts the root
filesystem. It will not affect initramfs based mounting.
If unsure, say N here.
This will instruct the kernel to automatically mount the
devtmpfs filesystem at /dev, directly after the kernel has
mounted the root filesystem. The behavior can be overridden
with the commandline parameter: devtmpfs.mount=0|1.
This option does not affect initramfs based booting, here
the devtmpfs filesystem always needs to be mounted manually
after the roots is mounted.
With this option enabled, it allows to bring up a system in
rescue mode with init=/bin/sh, even when the /dev directory
on the rootfs is completely empty.
config STANDALONE
bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL

26
drivers/base/bus.c
View file

@ -70,7 +70,7 @@ static ssize_t drv_attr_store(struct kobject *kobj, struct attribute *attr,
return ret;
}
static struct sysfs_ops driver_sysfs_ops = {
static const struct sysfs_ops driver_sysfs_ops = {
.show = drv_attr_show,
.store = drv_attr_store,
};
@ -115,7 +115,7 @@ static ssize_t bus_attr_store(struct kobject *kobj, struct attribute *attr,
return ret;
}
static struct sysfs_ops bus_sysfs_ops = {
static const struct sysfs_ops bus_sysfs_ops = {
.show = bus_attr_show,
.store = bus_attr_store,
};
@ -154,7 +154,7 @@ static int bus_uevent_filter(struct kset *kset, struct kobject *kobj)
return 0;
}
static struct kset_uevent_ops bus_uevent_ops = {
static const struct kset_uevent_ops bus_uevent_ops = {
.filter = bus_uevent_filter,
};
@ -173,10 +173,10 @@ static ssize_t driver_unbind(struct device_driver *drv,
dev = bus_find_device_by_name(bus, NULL, buf);
if (dev && dev->driver == drv) {
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
device_lock(dev->parent);
device_release_driver(dev);
if (dev->parent)
up(&dev->parent->sem);
device_unlock(dev->parent);
err = count;
}
put_device(dev);
@ -200,12 +200,12 @@ static ssize_t driver_bind(struct device_driver *drv,
dev = bus_find_device_by_name(bus, NULL, buf);
if (dev && dev->driver == NULL && driver_match_device(drv, dev)) {
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
down(&dev->sem);
device_lock(dev->parent);
device_lock(dev);
err = driver_probe_device(drv, dev);
up(&dev->sem);
device_unlock(dev);
if (dev->parent)
up(&dev->parent->sem);
device_unlock(dev->parent);
if (err > 0) {
/* success */
@ -744,10 +744,10 @@ static int __must_check bus_rescan_devices_helper(struct device *dev,
if (!dev->driver) {
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
device_lock(dev->parent);
ret = device_attach(dev);
if (dev->parent)
up(&dev->parent->sem);
device_unlock(dev->parent);
}
return ret < 0 ? ret : 0;
}
@ -779,10 +779,10 @@ int device_reprobe(struct device *dev)
{
if (dev->driver) {
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
device_lock(dev->parent);
device_release_driver(dev);
if (dev->parent)
up(&dev->parent->sem);
device_unlock(dev->parent);
}
return bus_rescan_devices_helper(dev, NULL);
}

16
drivers/base/class.c
View file

@ -31,7 +31,7 @@ static ssize_t class_attr_show(struct kobject *kobj, struct attribute *attr,
ssize_t ret = -EIO;
if (class_attr->show)
ret = class_attr->show(cp->class, buf);
ret = class_attr->show(cp->class, class_attr, buf);
return ret;
}
@ -43,7 +43,7 @@ static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr,
ssize_t ret = -EIO;
if (class_attr->store)
ret = class_attr->store(cp->class, buf, count);
ret = class_attr->store(cp->class, class_attr, buf, count);
return ret;
}
@ -63,7 +63,7 @@ static void class_release(struct kobject *kobj)
kfree(cp);
}
static struct sysfs_ops class_sysfs_ops = {
static const struct sysfs_ops class_sysfs_ops = {
.show = class_attr_show,
.store = class_attr_store,
};
@ -490,6 +490,16 @@ void class_interface_unregister(struct class_interface *class_intf)
class_put(parent);
}
ssize_t show_class_attr_string(struct class *class, struct class_attribute *attr,
char *buf)
{
struct class_attribute_string *cs;
cs = container_of(attr, struct class_attribute_string, attr);
return snprintf(buf, PAGE_SIZE, "%s\n", cs->str);
}
EXPORT_SYMBOL_GPL(show_class_attr_string);
struct class_compat {
struct kobject *kobj;
};

46
drivers/base/core.c
View file

@ -100,7 +100,7 @@ static ssize_t dev_attr_store(struct kobject *kobj, struct attribute *attr,
return ret;
}
static struct sysfs_ops dev_sysfs_ops = {
static const struct sysfs_ops dev_sysfs_ops = {
.show = dev_attr_show,
.store = dev_attr_store,
};
@ -252,7 +252,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
return retval;
}
static struct kset_uevent_ops device_uevent_ops = {
static const struct kset_uevent_ops device_uevent_ops = {
.filter = dev_uevent_filter,
.name = dev_uevent_name,
.uevent = dev_uevent,
@ -306,15 +306,10 @@ static ssize_t store_uevent(struct device *dev, struct device_attribute *attr,
{
enum kobject_action action;
if (kobject_action_type(buf, count, &action) == 0) {
if (kobject_action_type(buf, count, &action) == 0)
kobject_uevent(&dev->kobj, action);
goto out;
}
dev_err(dev, "uevent: unsupported action-string; this will "
"be ignored in a future kernel version\n");
kobject_uevent(&dev->kobj, KOBJ_ADD);
out:
else
dev_err(dev, "uevent: unknown action-string\n");
return count;
}
@ -607,6 +602,7 @@ static struct kobject *get_device_parent(struct device *dev,
int retval;
if (dev->class) {
static DEFINE_MUTEX(gdp_mutex);
struct kobject *kobj = NULL;
struct kobject *parent_kobj;
struct kobject *k;
@ -623,6 +619,8 @@ static struct kobject *get_device_parent(struct device *dev,
else
parent_kobj = &parent->kobj;
mutex_lock(&gdp_mutex);
/* find our class-directory at the parent and reference it */
spin_lock(&dev->class->p->class_dirs.list_lock);
list_for_each_entry(k, &dev->class->p->class_dirs.list, entry)
@ -631,20 +629,26 @@ static struct kobject *get_device_parent(struct device *dev,
break;
}
spin_unlock(&dev->class->p->class_dirs.list_lock);
if (kobj)
if (kobj) {
mutex_unlock(&gdp_mutex);
return kobj;
}
/* or create a new class-directory at the parent device */
k = kobject_create();
if (!k)
if (!k) {
mutex_unlock(&gdp_mutex);
return NULL;
}
k->kset = &dev->class->p->class_dirs;
retval = kobject_add(k, parent_kobj, "%s", dev->class->name);
if (retval < 0) {
mutex_unlock(&gdp_mutex);
kobject_put(k);
return NULL;
}
/* do not emit an uevent for this simple "glue" directory */
mutex_unlock(&gdp_mutex);
return k;
}
@ -1574,22 +1578,16 @@ int device_rename(struct device *dev, char *new_name)
if (old_class_name) {
new_class_name = make_class_name(dev->class->name, &dev->kobj);
if (new_class_name) {
error = sysfs_create_link_nowarn(&dev->parent->kobj,
&dev->kobj,
new_class_name);
if (error)
goto out;
sysfs_remove_link(&dev->parent->kobj, old_class_name);
error = sysfs_rename_link(&dev->parent->kobj,
&dev->kobj,
old_class_name,
new_class_name);
}
}
#else
if (dev->class) {
error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj,
&dev->kobj, dev_name(dev));
if (error)
goto out;
sysfs_remove_link(&dev->class->p->class_subsys.kobj,
old_device_name);
error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
&dev->kobj, old_device_name, new_name);
}
#endif

105
drivers/base/cpu.c
View file

@ -13,8 +13,11 @@
#include "base.h"
static struct sysdev_class_attribute *cpu_sysdev_class_attrs[];
struct sysdev_class cpu_sysdev_class = {
.name = "cpu",
.attrs = cpu_sysdev_class_attrs,
};
EXPORT_SYMBOL(cpu_sysdev_class);
@ -76,34 +79,24 @@ void unregister_cpu(struct cpu *cpu)
}
#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
static ssize_t cpu_probe_store(struct class *class, const char *buf,
static ssize_t cpu_probe_store(struct sys_device *dev,
struct sysdev_attribute *attr,
const char *buf,
size_t count)
{
return arch_cpu_probe(buf, count);
}
static ssize_t cpu_release_store(struct class *class, const char *buf,
static ssize_t cpu_release_store(struct sys_device *dev,
struct sysdev_attribute *attr,
const char *buf,
size_t count)
{
return arch_cpu_release(buf, count);
}
static CLASS_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
static CLASS_ATTR(release, S_IWUSR, NULL, cpu_release_store);
int __init cpu_probe_release_init(void)
{
int rc;
rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
&class_attr_probe.attr);
if (!rc)
rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
&class_attr_release.attr);
return rc;
}
device_initcall(cpu_probe_release_init);
static SYSDEV_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
static SYSDEV_ATTR(release, S_IWUSR, NULL, cpu_release_store);
#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
#else /* ... !CONFIG_HOTPLUG_CPU */
@ -141,31 +134,39 @@ static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
/*
* Print cpu online, possible, present, and system maps
*/
static ssize_t print_cpus_map(char *buf, const struct cpumask *map)
struct cpu_attr {
struct sysdev_class_attribute attr;
const struct cpumask *const * const map;
};
static ssize_t show_cpus_attr(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
char *buf)
{
int n = cpulist_scnprintf(buf, PAGE_SIZE-2, map);
struct cpu_attr *ca = container_of(attr, struct cpu_attr, attr);
int n = cpulist_scnprintf(buf, PAGE_SIZE-2, *(ca->map));
buf[n++] = '\n';
buf[n] = '\0';
return n;
}
#define print_cpus_func(type) \
static ssize_t print_cpus_##type(struct sysdev_class *class, char *buf) \
{ \
return print_cpus_map(buf, cpu_##type##_mask); \
} \
static struct sysdev_class_attribute attr_##type##_map = \
_SYSDEV_CLASS_ATTR(type, 0444, print_cpus_##type, NULL)
#define _CPU_ATTR(name, map) \
{ _SYSDEV_CLASS_ATTR(name, 0444, show_cpus_attr, NULL), map }
print_cpus_func(online);
print_cpus_func(possible);
print_cpus_func(present);
/* Keep in sync with cpu_sysdev_class_attrs */
static struct cpu_attr cpu_attrs[] = {
_CPU_ATTR(online, &cpu_online_mask),
_CPU_ATTR(possible, &cpu_possible_mask),
_CPU_ATTR(present, &cpu_present_mask),
};
/*
* Print values for NR_CPUS and offlined cpus
*/
static ssize_t print_cpus_kernel_max(struct sysdev_class *class, char *buf)
static ssize_t print_cpus_kernel_max(struct sysdev_class *class,
struct sysdev_class_attribute *attr, char *buf)
{
int n = snprintf(buf, PAGE_SIZE-2, "%d\n", NR_CPUS - 1);
return n;
@ -175,7 +176,8 @@ static SYSDEV_CLASS_ATTR(kernel_max, 0444, print_cpus_kernel_max, NULL);
/* arch-optional setting to enable display of offline cpus >= nr_cpu_ids */
unsigned int total_cpus;
static ssize_t print_cpus_offline(struct sysdev_class *class, char *buf)
static ssize_t print_cpus_offline(struct sysdev_class *class,
struct sysdev_class_attribute *attr, char *buf)
{
int n = 0, len = PAGE_SIZE-2;
cpumask_var_t offline;
@ -204,29 +206,6 @@ static ssize_t print_cpus_offline(struct sysdev_class *class, char *buf)
}
static SYSDEV_CLASS_ATTR(offline, 0444, print_cpus_offline, NULL);
static struct sysdev_class_attribute *cpu_state_attr[] = {
&attr_online_map,
&attr_possible_map,
&attr_present_map,
&attr_kernel_max,
&attr_offline,
};
static int cpu_states_init(void)
{
int i;
int err = 0;
for (i = 0; i < ARRAY_SIZE(cpu_state_attr); i++) {
int ret;
ret = sysdev_class_create_file(&cpu_sysdev_class,
cpu_state_attr[i]);
if (!err)
err = ret;
}
return err;
}
/*
* register_cpu - Setup a sysfs device for a CPU.
* @cpu - cpu->hotpluggable field set to 1 will generate a control file in
@ -272,9 +251,6 @@ int __init cpu_dev_init(void)
int err;
err = sysdev_class_register(&cpu_sysdev_class);
if (!err)
err = cpu_states_init();
#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
if (!err)
err = sched_create_sysfs_power_savings_entries(&cpu_sysdev_class);
@ -282,3 +258,16 @@ int __init cpu_dev_init(void)
return err;
}
static struct sysdev_class_attribute *cpu_sysdev_class_attrs[] = {
#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
&attr_probe,
&attr_release,
#endif
&cpu_attrs[0].attr,
&cpu_attrs[1].attr,
&cpu_attrs[2].attr,
&attr_kernel_max,
&attr_offline,
NULL
};

38
drivers/base/dd.c
View file

@ -85,7 +85,7 @@ static void driver_sysfs_remove(struct device *dev)
* for before calling this. (It is ok to call with no other effort
* from a driver's probe() method.)
*
* This function must be called with @dev->sem held.
* This function must be called with the device lock held.
*/
int device_bind_driver(struct device *dev)
{
@ -190,8 +190,8 @@ EXPORT_SYMBOL_GPL(wait_for_device_probe);
* This function returns -ENODEV if the device is not registered,
* 1 if the device is bound successfully and 0 otherwise.
*
* This function must be called with @dev->sem held. When called for a
* USB interface, @dev->parent->sem must be held as well.
* This function must be called with @dev lock held. When called for a
* USB interface, @dev->parent lock must be held as well.
*/
int driver_probe_device(struct device_driver *drv, struct device *dev)
{
@ -233,13 +233,13 @@ static int __device_attach(struct device_driver *drv, void *data)
* 0 if no matching driver was found;
* -ENODEV if the device is not registered.
*
* When called for a USB interface, @dev->parent->sem must be held.
* When called for a USB interface, @dev->parent lock must be held.
*/
int device_attach(struct device *dev)
{
int ret = 0;
down(&dev->sem);
device_lock(dev);
if (dev->driver) {
ret = device_bind_driver(dev);
if (ret == 0)
@ -253,7 +253,7 @@ int device_attach(struct device *dev)
ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach);
pm_runtime_put_sync(dev);
}
up(&dev->sem);
device_unlock(dev);
return ret;
}
EXPORT_SYMBOL_GPL(device_attach);
@ -276,13 +276,13 @@ static int __driver_attach(struct device *dev, void *data)
return 0;
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
down(&dev->sem);
device_lock(dev->parent);
device_lock(dev);
if (!dev->driver)
driver_probe_device(drv, dev);
up(&dev->sem);
device_unlock(dev);
if (dev->parent)
up(&dev->parent->sem);
device_unlock(dev->parent);
return 0;
}
@ -303,8 +303,8 @@ int driver_attach(struct device_driver *drv)
EXPORT_SYMBOL_GPL(driver_attach);
/*
* __device_release_driver() must be called with @dev->sem held.
* When called for a USB interface, @dev->parent->sem must be held as well.
* __device_release_driver() must be called with @dev lock held.
* When called for a USB interface, @dev->parent lock must be held as well.
*/
static void __device_release_driver(struct device *dev)
{
@ -343,7 +343,7 @@ static void __device_release_driver(struct device *dev)
* @dev: device.
*
* Manually detach device from driver.
* When called for a USB interface, @dev->parent->sem must be held.
* When called for a USB interface, @dev->parent lock must be held.
*/
void device_release_driver(struct device *dev)
{
@ -352,9 +352,9 @@ void device_release_driver(struct device *dev)
* within their ->remove callback for the same device, they
* will deadlock right here.
*/
down(&dev->sem);
device_lock(dev);
__device_release_driver(dev);
up(&dev->sem);
device_unlock(dev);
}
EXPORT_SYMBOL_GPL(device_release_driver);
@ -381,13 +381,13 @@ void driver_detach(struct device_driver *drv)
spin_unlock(&drv->p->klist_devices.k_lock);
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
down(&dev->sem);
device_lock(dev->parent);
device_lock(dev);
if (dev->driver == drv)
__device_release_driver(dev);
up(&dev->sem);
device_unlock(dev);
if (dev->parent)
up(&dev->parent->sem);
device_unlock(dev->parent);
put_device(dev);
}
}

13
drivers/base/devtmpfs.c
View file

@ -301,6 +301,19 @@ int devtmpfs_delete_node(struct device *dev)
if (dentry->d_inode) {
err = vfs_getattr(nd.path.mnt, dentry, &stat);
if (!err && dev_mynode(dev, dentry->d_inode, &stat)) {
struct iattr newattrs;
/*
* before unlinking this node, reset permissions
* of possible references like hardlinks
*/
newattrs.ia_uid = 0;
newattrs.ia_gid = 0;
newattrs.ia_mode = stat.mode & ~0777;
newattrs.ia_valid =
ATTR_UID|ATTR_GID|ATTR_MODE;
mutex_lock(&dentry->d_inode->i_mutex);
notify_change(dentry, &newattrs);
mutex_unlock(&dentry->d_inode->i_mutex);
err = vfs_unlink(nd.path.dentry->d_inode,
dentry);
if (!err || err == -ENOENT)

11
drivers/base/firmware_class.c
View file

@ -19,7 +19,6 @@
#include <linux/kthread.h>
#include <linux/highmem.h>
#include <linux/firmware.h>
#include "base.h"
#define to_dev(obj) container_of(obj, struct device, kobj)
@ -69,7 +68,9 @@ fw_load_abort(struct firmware_priv *fw_priv)
}
static ssize_t
firmware_timeout_show(struct class *class, char *buf)
firmware_timeout_show(struct class *class,
struct class_attribute *attr,
char *buf)
{
return sprintf(buf, "%d\n", loading_timeout);
}
@ -87,7 +88,9 @@ firmware_timeout_show(struct class *class, char *buf)
* Note: zero means 'wait forever'.
**/
static ssize_t
firmware_timeout_store(struct class *class, const char *buf, size_t count)
firmware_timeout_store(struct class *class,
struct class_attribute *attr,
const char *buf, size_t count)
{
loading_timeout = simple_strtol(buf, NULL, 10);
if (loading_timeout < 0)
@ -610,7 +613,7 @@ request_firmware_work_func(void *arg)
}
/**
* request_firmware_nowait: asynchronous version of request_firmware
* request_firmware_nowait - asynchronous version of request_firmware
* @module: module requesting the firmware
* @uevent: sends uevent to copy the firmware image if this flag
* is non-zero else the firmware copy must be done manually.

20
drivers/base/memory.c
View file

@ -44,7 +44,7 @@ static int memory_uevent(struct kset *kset, struct kobject *obj, struct kobj_uev
return retval;
}
static struct kset_uevent_ops memory_uevent_ops = {
static const struct kset_uevent_ops memory_uevent_ops = {
.name = memory_uevent_name,
.uevent = memory_uevent,
};
@ -309,17 +309,18 @@ static SYSDEV_ATTR(removable, 0444, show_mem_removable, NULL);
* Block size attribute stuff
*/
static ssize_t
print_block_size(struct class *class, char *buf)
print_block_size(struct sysdev_class *class, struct sysdev_class_attribute *attr,
char *buf)
{
return sprintf(buf, "%#lx\n", (unsigned long)PAGES_PER_SECTION * PAGE_SIZE);
}
static CLASS_ATTR(block_size_bytes, 0444, print_block_size, NULL);
static SYSDEV_CLASS_ATTR(block_size_bytes, 0444, print_block_size, NULL);
static int block_size_init(void)
{
return sysfs_create_file(&memory_sysdev_class.kset.kobj,
&class_attr_block_size_bytes.attr);
&attr_block_size_bytes.attr);
}
/*
@ -330,7 +331,8 @@ static int block_size_init(void)
*/
#ifdef CONFIG_ARCH_MEMORY_PROBE
static ssize_t
memory_probe_store(struct class *class, const char *buf, size_t count)
memory_probe_store(struct class *class, struct class_attribute *attr,
const char *buf, size_t count)
{
u64 phys_addr;
int nid;
@ -367,7 +369,9 @@ static inline int memory_probe_init(void)
/* Soft offline a page */
static ssize_t
store_soft_offline_page(struct class *class, const char *buf, size_t count)
store_soft_offline_page(struct class *class,
struct class_attribute *attr,
const char *buf, size_t count)
{
int ret;
u64 pfn;
@ -384,7 +388,9 @@ store_soft_offline_page(struct class *class, const char *buf, size_t count)
/* Forcibly offline a page, including killing processes. */
static ssize_t
store_hard_offline_page(struct class *class, const char *buf, size_t count)
store_hard_offline_page(struct class *class,
struct class_attribute *attr,
const char *buf, size_t count)
{
int ret;
u64 pfn;

95
drivers/base/node.c
View file

@ -16,8 +16,11 @@
#include <linux/device.h>
#include <linux/swap.h>
static struct sysdev_class_attribute *node_state_attrs[];
static struct sysdev_class node_class = {
.name = "node",
.attrs = node_state_attrs,
};
@ -544,76 +547,52 @@ static ssize_t print_nodes_state(enum node_states state, char *buf)
return n;
}
static ssize_t print_nodes_possible(struct sysdev_class *class, char *buf)
{
return print_nodes_state(N_POSSIBLE, buf);
}
static ssize_t print_nodes_online(struct sysdev_class *class, char *buf)
{
return print_nodes_state(N_ONLINE, buf);
}
static ssize_t print_nodes_has_normal_memory(struct sysdev_class *class,
char *buf)
{
return print_nodes_state(N_NORMAL_MEMORY, buf);
}
static ssize_t print_nodes_has_cpu(struct sysdev_class *class, char *buf)
{
return print_nodes_state(N_CPU, buf);
}
static SYSDEV_CLASS_ATTR(possible, 0444, print_nodes_possible, NULL);
static SYSDEV_CLASS_ATTR(online, 0444, print_nodes_online, NULL);
static SYSDEV_CLASS_ATTR(has_normal_memory, 0444, print_nodes_has_normal_memory,
NULL);
static SYSDEV_CLASS_ATTR(has_cpu, 0444, print_nodes_has_cpu, NULL);
#ifdef CONFIG_HIGHMEM
static ssize_t print_nodes_has_high_memory(struct sysdev_class *class,
char *buf)
{
return print_nodes_state(N_HIGH_MEMORY, buf);
}
static SYSDEV_CLASS_ATTR(has_high_memory, 0444, print_nodes_has_high_memory,
NULL);
#endif
struct sysdev_class_attribute *node_state_attr[] = {
&attr_possible,
&attr_online,
&attr_has_normal_memory,
#ifdef CONFIG_HIGHMEM
&attr_has_high_memory,
#endif
&attr_has_cpu,
struct node_attr {
struct sysdev_class_attribute attr;
enum node_states state;
};
static int node_states_init(void)
static ssize_t show_node_state(struct sysdev_class *class,
struct sysdev_class_attribute *attr, char *buf)
{
int i;
int err = 0;
for (i = 0; i < NR_NODE_STATES; i++) {
int ret;
ret = sysdev_class_create_file(&node_class, node_state_attr[i]);
if (!err)
err = ret;
}
return err;
struct node_attr *na = container_of(attr, struct node_attr, attr);
return print_nodes_state(na->state, buf);
}
#define _NODE_ATTR(name, state) \
{ _SYSDEV_CLASS_ATTR(name, 0444, show_node_state, NULL), state }
static struct node_attr node_state_attr[] = {
_NODE_ATTR(possible, N_POSSIBLE),
_NODE_ATTR(online, N_ONLINE),
_NODE_ATTR(has_normal_memory, N_NORMAL_MEMORY),
_NODE_ATTR(has_cpu, N_CPU),
#ifdef CONFIG_HIGHMEM
_NODE_ATTR(has_high_memory, N_HIGH_MEMORY),
#endif
};
static struct sysdev_class_attribute *node_state_attrs[] = {
&node_state_attr[0].attr,
&node_state_attr[1].attr,
&node_state_attr[2].attr,
&node_state_attr[3].attr,
#ifdef CONFIG_HIGHMEM
&node_state_attr[4].attr,
#endif
NULL
};
#define NODE_CALLBACK_PRI 2 /* lower than SLAB */
static int __init register_node_type(void)
{
int ret;
BUILD_BUG_ON(ARRAY_SIZE(node_state_attr) != NR_NODE_STATES);
BUILD_BUG_ON(ARRAY_SIZE(node_state_attrs)-1 != NR_NODE_STATES);
ret = sysdev_class_register(&node_class);
if (!ret) {
ret = node_states_init();
hotplug_memory_notifier(node_memory_callback,
NODE_CALLBACK_PRI);
}

76
drivers/base/platform.c
View file

@ -128,7 +128,7 @@ struct platform_object {
};
/**
* platform_device_put
* platform_device_put - destroy a platform device
* @pdev: platform device to free
*
* Free all memory associated with a platform device. This function must
@ -152,7 +152,7 @@ static void platform_device_release(struct device *dev)
}
/**
* platform_device_alloc
* platform_device_alloc - create a platform device
* @name: base name of the device we're adding
* @id: instance id
*
@ -177,7 +177,7 @@ struct platform_device *platform_device_alloc(const char *name, int id)
EXPORT_SYMBOL_GPL(platform_device_alloc);
/**
* platform_device_add_resources
* platform_device_add_resources - add resources to a platform device
* @pdev: platform device allocated by platform_device_alloc to add resources to
* @res: set of resources that needs to be allocated for the device
* @num: number of resources
@ -202,7 +202,7 @@ int platform_device_add_resources(struct platform_device *pdev,
EXPORT_SYMBOL_GPL(platform_device_add_resources);
/**
* platform_device_add_data
* platform_device_add_data - add platform-specific data to a platform device
* @pdev: platform device allocated by platform_device_alloc to add resources to
* @data: platform specific data for this platform device
* @size: size of platform specific data
@ -344,7 +344,7 @@ void platform_device_unregister(struct platform_device *pdev)
EXPORT_SYMBOL_GPL(platform_device_unregister);
/**
* platform_device_register_simple
* platform_device_register_simple - add a platform-level device and its resources
* @name: base name of the device we're adding
* @id: instance id
* @res: set of resources that needs to be allocated for the device
@ -396,7 +396,7 @@ error:
EXPORT_SYMBOL_GPL(platform_device_register_simple);
/**
* platform_device_register_data
* platform_device_register_data - add a platform-level device with platform-specific data
* @parent: parent device for the device we're adding
* @name: base name of the device we're adding
* @id: instance id
@ -473,7 +473,7 @@ static void platform_drv_shutdown(struct device *_dev)
}
/**
* platform_driver_register
* platform_driver_register - register a driver for platform-level devices
* @drv: platform driver structure
*/
int platform_driver_register(struct platform_driver *drv)
@ -491,7 +491,7 @@ int platform_driver_register(struct platform_driver *drv)
EXPORT_SYMBOL_GPL(platform_driver_register);
/**
* platform_driver_unregister
* platform_driver_unregister - unregister a driver for platform-level devices
* @drv: platform driver structure
*/
void platform_driver_unregister(struct platform_driver *drv)
@ -548,6 +548,64 @@ int __init_or_module platform_driver_probe(struct platform_driver *drv,
}
EXPORT_SYMBOL_GPL(platform_driver_probe);
/**
* platform_create_bundle - register driver and create corresponding device
* @driver: platform driver structure
* @probe: the driver probe routine, probably from an __init section
* @res: set of resources that needs to be allocated for the device
* @n_res: number of resources
* @data: platform specific data for this platform device
* @size: size of platform specific data
*
* Use this in legacy-style modules that probe hardware directly and
* register a single platform device and corresponding platform driver.
*/
struct platform_device * __init_or_module platform_create_bundle(
struct platform_driver *driver,
int (*probe)(struct platform_device *),
struct resource *res, unsigned int n_res,
const void *data, size_t size)
{
struct platform_device *pdev;
int error;
pdev = platform_device_alloc(driver->driver.name, -1);
if (!pdev) {
error = -ENOMEM;
goto err_out;
}
if (res) {
error = platform_device_add_resources(pdev, res, n_res);
if (error)
goto err_pdev_put;
}
if (data) {
error = platform_device_add_data(pdev, data, size);
if (error)
goto err_pdev_put;
}
error = platform_device_add(pdev);
if (error)
goto err_pdev_put;
error = platform_driver_probe(driver, probe);
if (error)
goto err_pdev_del;
return pdev;
err_pdev_del:
platform_device_del(pdev);
err_pdev_put:
platform_device_put(pdev);
err_out:
return ERR_PTR(error);
}
EXPORT_SYMBOL_GPL(platform_create_bundle);
/* modalias support enables more hands-off userspace setup:
* (a) environment variable lets new-style hotplug events work once system is
* fully running: "modprobe $MODALIAS"
@ -578,7 +636,7 @@ static int platform_uevent(struct device *dev, struct kobj_uevent_env *env)
}
static const struct platform_device_id *platform_match_id(
struct platform_device_id *id,
const struct platform_device_id *id,
struct platform_device *pdev)
{
while (id->name[0]) {

1
drivers/base/power/Makefile
View file

@ -1,6 +1,7 @@
obj-$(CONFIG_PM) += sysfs.o
obj-$(CONFIG_PM_SLEEP) += main.o
obj-$(CONFIG_PM_RUNTIME) += runtime.o
obj-$(CONFIG_PM_OPS) += generic_ops.o
obj-$(CONFIG_PM_TRACE_RTC) += trace.o
ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG

233
drivers/base/power/generic_ops.c Normal file
View file

@ -0,0 +1,233 @@
/*
* drivers/base/power/generic_ops.c - Generic PM callbacks for subsystems
*
* Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
*
* This file is released under the GPLv2.
*/
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#ifdef CONFIG_PM_RUNTIME
/**
* pm_generic_runtime_idle - Generic runtime idle callback for subsystems.
* @dev: Device to handle.
*
* If PM operations are defined for the @dev's driver and they include
* ->runtime_idle(), execute it and return its error code, if nonzero.
* Otherwise, execute pm_runtime_suspend() for the device and return 0.
*/
int pm_generic_runtime_idle(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pm && pm->runtime_idle) {
int ret = pm->runtime_idle(dev);
if (ret)
return ret;
}
pm_runtime_suspend(dev);
return 0;
}
EXPORT_SYMBOL_GPL(pm_generic_runtime_idle);
/**
* pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.
* @dev: Device to suspend.
*
* If PM operations are defined for the @dev's driver and they include
* ->runtime_suspend(), execute it and return its error code. Otherwise,
* return -EINVAL.
*/
int pm_generic_runtime_suspend(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int ret;
ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : -EINVAL;
return ret;
}
EXPORT_SYMBOL_GPL(pm_generic_runtime_suspend);
/**
* pm_generic_runtime_resume - Generic runtime resume callback for subsystems.
* @dev: Device to resume.
*
* If PM operations are defined for the @dev's driver and they include
* ->runtime_resume(), execute it and return its error code. Otherwise,
* return -EINVAL.
*/
int pm_generic_runtime_resume(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int ret;
ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : -EINVAL;
return ret;
}
EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);
#endif /* CONFIG_PM_RUNTIME */
#ifdef CONFIG_PM_SLEEP
/**
* __pm_generic_call - Generic suspend/freeze/poweroff/thaw subsystem callback.
* @dev: Device to handle.
* @event: PM transition of the system under way.
*
* If the device has not been suspended at run time, execute the
* suspend/freeze/poweroff/thaw callback provided by its driver, if defined, and
* return its error code. Otherwise, return zero.
*/
static int __pm_generic_call(struct device *dev, int event)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int (*callback)(struct device *);
if (!pm || pm_runtime_suspended(dev))
return 0;
switch (event) {
case PM_EVENT_SUSPEND:
callback = pm->suspend;
break;
case PM_EVENT_FREEZE:
callback = pm->freeze;
break;
case PM_EVENT_HIBERNATE:
callback = pm->poweroff;
break;
case PM_EVENT_THAW:
callback = pm->thaw;
break;
default:
callback = NULL;
break;
}
return callback ? callback(dev) : 0;
}
/**
* pm_generic_suspend - Generic suspend callback for subsystems.
* @dev: Device to suspend.
*/
int pm_generic_suspend(struct device *dev)
{
return __pm_generic_call(dev, PM_EVENT_SUSPEND);
}
EXPORT_SYMBOL_GPL(pm_generic_suspend);
/**
* pm_generic_freeze - Generic freeze callback for subsystems.
* @dev: Device to freeze.
*/
int pm_generic_freeze(struct device *dev)
{
return __pm_generic_call(dev, PM_EVENT_FREEZE);
}
EXPORT_SYMBOL_GPL(pm_generic_freeze);
/**
* pm_generic_poweroff - Generic poweroff callback for subsystems.
* @dev: Device to handle.
*/
int pm_generic_poweroff(struct device *dev)
{
return __pm_generic_call(dev, PM_EVENT_HIBERNATE);
}
EXPORT_SYMBOL_GPL(pm_generic_poweroff);
/**
* pm_generic_thaw - Generic thaw callback for subsystems.
* @dev: Device to thaw.
*/
int pm_generic_thaw(struct device *dev)
{
return __pm_generic_call(dev, PM_EVENT_THAW);
}
EXPORT_SYMBOL_GPL(pm_generic_thaw);
/**
* __pm_generic_resume - Generic resume/restore callback for subsystems.
* @dev: Device to handle.
* @event: PM transition of the system under way.
*
* Execute the resume/resotre callback provided by the @dev's driver, if
* defined. If it returns 0, change the device's runtime PM status to 'active'.
* Return the callback's error code.
*/
static int __pm_generic_resume(struct device *dev, int event)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int (*callback)(struct device *);
int ret;
if (!pm)
return 0;
switch (event) {
case PM_EVENT_RESUME:
callback = pm->resume;
break;
case PM_EVENT_RESTORE:
callback = pm->restore;
break;
default:
callback = NULL;
break;
}
if (!callback)
return 0;
ret = callback(dev);
if (!ret) {
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
}
return ret;
}
/**
* pm_generic_resume - Generic resume callback for subsystems.
* @dev: Device to resume.
*/
int pm_generic_resume(struct device *dev)
{
return __pm_generic_resume(dev, PM_EVENT_RESUME);
}
EXPORT_SYMBOL_GPL(pm_generic_resume);
/**
* pm_generic_restore - Generic restore callback for subsystems.
* @dev: Device to restore.
*/
int pm_generic_restore(struct device *dev)
{
return __pm_generic_resume(dev, PM_EVENT_RESTORE);
}
EXPORT_SYMBOL_GPL(pm_generic_restore);
#endif /* CONFIG_PM_SLEEP */
struct dev_pm_ops generic_subsys_pm_ops = {
#ifdef CONFIG_PM_SLEEP
.suspend = pm_generic_suspend,
.resume = pm_generic_resume,
.freeze = pm_generic_freeze,
.thaw = pm_generic_thaw,
.poweroff = pm_generic_poweroff,
.restore = pm_generic_restore,
#endif
#ifdef CONFIG_PM_RUNTIME
.runtime_suspend = pm_generic_runtime_suspend,
.runtime_resume = pm_generic_runtime_resume,
.runtime_idle = pm_generic_runtime_idle,
#endif
};
EXPORT_SYMBOL_GPL(generic_subsys_pm_ops);

20
drivers/base/power/main.c
View file

@ -35,8 +35,8 @@
* because children are guaranteed to be discovered after parents, and
* are inserted at the back of the list on discovery.
*
* Since device_pm_add() may be called with a device semaphore held,
* we must never try to acquire a device semaphore while holding
* Since device_pm_add() may be called with a device lock held,
* we must never try to acquire a device lock while holding
* dpm_list_mutex.
*/
@ -508,7 +508,7 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
TRACE_RESUME(0);
dpm_wait(dev->parent, async);
down(&dev->sem);
device_lock(dev);
dev->power.status = DPM_RESUMING;
@ -543,7 +543,7 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
}
}
End:
up(&dev->sem);
device_unlock(dev);
complete_all(&dev->power.completion);
TRACE_RESUME(error);
@ -629,7 +629,7 @@ static void dpm_resume(pm_message_t state)
*/
static void device_complete(struct device *dev, pm_message_t state)
{
down(&dev->sem);
device_lock(dev);
if (dev->class && dev->class->pm && dev->class->pm->complete) {
pm_dev_dbg(dev, state, "completing class ");
@ -646,7 +646,7 @@ static void device_complete(struct device *dev, pm_message_t state)
dev->bus->pm->complete(dev);
}
up(&dev->sem);
device_unlock(dev);
}
/**
@ -809,7 +809,7 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
int error = 0;
dpm_wait_for_children(dev, async);
down(&dev->sem);
device_lock(dev);
if (async_error)
goto End;
@ -849,7 +849,7 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
dev->power.status = DPM_OFF;
End:
up(&dev->sem);
device_unlock(dev);
complete_all(&dev->power.completion);
return error;
@ -938,7 +938,7 @@ static int device_prepare(struct device *dev, pm_message_t state)
{
int error = 0;
down(&dev->sem);
device_lock(dev);
if (dev->bus && dev->bus->pm && dev->bus->pm->prepare) {
pm_dev_dbg(dev, state, "preparing ");
@ -962,7 +962,7 @@ static int device_prepare(struct device *dev, pm_message_t state)
suspend_report_result(dev->class->pm->prepare, error);
}
End:
up(&dev->sem);
device_unlock(dev);
return error;
}

17
drivers/base/sys.c
View file

@ -54,7 +54,7 @@ sysdev_store(struct kobject *kobj, struct attribute *attr,
return -EIO;
}
static struct sysfs_ops sysfs_ops = {
static const struct sysfs_ops sysfs_ops = {
.show = sysdev_show,
.store = sysdev_store,
};
@ -89,7 +89,7 @@ static ssize_t sysdev_class_show(struct kobject *kobj, struct attribute *attr,
struct sysdev_class_attribute *class_attr = to_sysdev_class_attr(attr);
if (class_attr->show)
return class_attr->show(class, buffer);
return class_attr->show(class, class_attr, buffer);
return -EIO;
}
@ -100,11 +100,11 @@ static ssize_t sysdev_class_store(struct kobject *kobj, struct attribute *attr,
struct sysdev_class_attribute *class_attr = to_sysdev_class_attr(attr);
if (class_attr->store)
return class_attr->store(class, buffer, count);
return class_attr->store(class, class_attr, buffer, count);
return -EIO;
}
static struct sysfs_ops sysfs_class_ops = {
static const struct sysfs_ops sysfs_class_ops = {
.show = sysdev_class_show,
.store = sysdev_class_store,
};
@ -145,13 +145,20 @@ int sysdev_class_register(struct sysdev_class *cls)
if (retval)
return retval;
return kset_register(&cls->kset);
retval = kset_register(&cls->kset);
if (!retval && cls->attrs)
retval = sysfs_create_files(&cls->kset.kobj,
(const struct attribute **)cls->attrs);
return retval;
}
void sysdev_class_unregister(struct sysdev_class *cls)
{
pr_debug("Unregistering sysdev class '%s'\n",
kobject_name(&cls->kset.kobj));
if (cls->attrs)
sysfs_remove_files(&cls->kset.kobj,
(const struct attribute **)cls->attrs);
kset_unregister(&cls->kset);
}

4
drivers/block/drbd/drbd_int.h
View file

@ -95,7 +95,7 @@ extern char usermode_helper[];
/* All EEs on the free list should have ID_VACANT (== 0)
* freshly allocated EEs get !ID_VACANT (== 1)
* so if it says "cannot dereference null pointer at adress 0x00000001",
* so if it says "cannot dereference null pointer at address 0x00000001",
* it is most likely one of these :( */
#define ID_IN_SYNC (4711ULL)
@ -1171,7 +1171,7 @@ extern int drbd_bitmap_io(struct drbd_conf *mdev, int (*io_fn)(struct drbd_conf
/* Meta data layout
We reserve a 128MB Block (4k aligned)
* either at the end of the backing device
* or on a seperate meta data device. */
* or on a separate meta data device. */
#define MD_RESERVED_SECT (128LU << 11) /* 128 MB, unit sectors */
/* The following numbers are sectors */

2
drivers/block/drbd/drbd_req.h
View file

@ -57,7 +57,7 @@
*
* It may me handed over to the local disk subsystem.
* It may be completed by the local disk subsystem,
* either sucessfully or with io-error.
* either successfully or with io-error.
* In case it is a READ request, and it failed locally,
* it may be retried remotely.
*

1499
drivers/block/floppy.c
View file

File diff suppressed because it is too large Load diff

12
drivers/block/osdblk.c
View file

@ -476,7 +476,9 @@ static void class_osdblk_release(struct class *cls)
kfree(cls);
}
static ssize_t class_osdblk_list(struct class *c, char *data)
static ssize_t class_osdblk_list(struct class *c,
struct class_attribute *attr,
char *data)
{
int n = 0;
struct list_head *tmp;
@ -500,7 +502,9 @@ static ssize_t class_osdblk_list(struct class *c, char *data)
return n;
}
static ssize_t class_osdblk_add(struct class *c, const char *buf, size_t count)
static ssize_t class_osdblk_add(struct class *c,
struct class_attribute *attr,
const char *buf, size_t count)
{
struct osdblk_device *osdev;
ssize_t rc;
@ -592,7 +596,9 @@ err_out_mod:
return rc;
}
static ssize_t class_osdblk_remove(struct class *c, const char *buf,
static ssize_t class_osdblk_remove(struct class *c,
struct class_attribute *attr,
const char *buf,
size_t count)
{
struct osdblk_device *osdev = NULL;

14
drivers/block/pktcdvd.c
View file

@ -284,7 +284,7 @@ static ssize_t kobj_pkt_store(struct kobject *kobj,
return len;
}
static struct sysfs_ops kobj_pkt_ops = {
static const struct sysfs_ops kobj_pkt_ops = {
.show = kobj_pkt_show,
.store = kobj_pkt_store
};
@ -337,7 +337,9 @@ static void class_pktcdvd_release(struct class *cls)
{
kfree(cls);
}
static ssize_t class_pktcdvd_show_map(struct class *c, char *data)
static ssize_t class_pktcdvd_show_map(struct class *c,
struct class_attribute *attr,
char *data)
{
int n = 0;
int idx;
@ -356,7 +358,9 @@ static ssize_t class_pktcdvd_show_map(struct class *c, char *data)
return n;
}
static ssize_t class_pktcdvd_store_add(struct class *c, const char *buf,
static ssize_t class_pktcdvd_store_add(struct class *c,
struct class_attribute *attr,
const char *buf,
size_t count)
{
unsigned int major, minor;
@ -376,7 +380,9 @@ static ssize_t class_pktcdvd_store_add(struct class *c, const char *buf,
return -EINVAL;
}
static ssize_t class_pktcdvd_store_remove(struct class *c, const char *buf,
static ssize_t class_pktcdvd_store_remove(struct class *c,
struct class_attribute *attr,
const char *buf,
size_t count)
{
unsigned int major, minor;

775
drivers/char/ChangeLog
View file

@ -1,775 +0,0 @@
2001-08-11 Tim Waugh <[email protected]>
* serial.c (get_pci_port): Deal with awkward Titan cards.
1998-08-26 Theodore Ts'o <[email protected]>
* serial.c (rs_open): Correctly decrement the module in-use count
on errors.
Thu Feb 19 14:24:08 1998 Theodore Ts'o <[email protected]>
* tty_io.c (tty_name): Remove the non-reentrant (and non-SMP safe)
version of tty_name, and rename the reentrant _tty_name
function to be tty_name.
(tty_open): Add a warning message stating callout devices
are deprecated.
Mon Dec 1 08:24:15 1997 Theodore Ts'o <[email protected]>
* tty_io.c (tty_get_baud_rate): Print a warning syslog if the
tty->alt_speed kludge is used; this means the system is
using the deprecated SPD_HI ioctls.
Mon Nov 24 10:37:49 1997 Theodore Ts'o <[email protected]>
* serial.c, esp.c, rocket.c: Change drivers to take advantage of
tty_get_baud_rate().
* tty_io.c (tty_get_baud_rate): New function which computes the
correct baud rate for the tty. More factoring out of
common code out of the serial driver to the high-level tty
functions....
Sat Nov 22 07:53:36 1997 Theodore Ts'o <[email protected]>
* serial.c, esp.c, rocket.c: Add tty->driver.break() routine, and
allow high-level tty code to handle the break and soft
carrier ioctls.
* tty_ioctl.c (n_tty_ioctl): Support TIOCGSOFTCAR and
TIOCSSOFTCAR, so that device drivers don't have to support
it.
* serial.c (autoconfig): Change 16750 test to hopefully eliminate
false results by people with strange 16550As being
detected as 16750s. Hopefully 16750s will still be
detected as 16750, and other weird UARTs won't get poorly
autodetected. If this doesn't work, I'll have to disable
the auto identification for the 16750.
* tty_io.c (tty_hangup): Now actually do the tty hangup
processing during the timer processing, and disable
interrupts while doing the hangup processing. This avoids
several nasty race conditions which happened when the
hangup processing was done asynchronously.
(tty_ioctl): Do break handling in the tty driver if
driver's break function is supported.
(tty_flip_buffer_push): New exported function which should
be used by drivers to push characters in the flip buffer
to the tty handler. This may either be done using a task
queue function for better CPU efficiency, or directly for
low latency operation.
* serial.c (rs_set_termios): Fix bug rs_set_termios when
transitioning away from B0, submitted by Stanislav
Voronyi.
Thu Jun 19 20:05:58 1997 Theodore Ts'o <[email protected]>
* serial.c (begin_break, end_break, rs_ioctl): Applied patch
to support BSD ioctls to set and clear the break
condition explicitly.
* console.c (scrup, scrdown, insert_line, delete_line): Applied
fix suggested by Aaron Tiensivu to speed up block scrolls
up and down.
* n_tty.c (opost_block, write_chan): Added a modified "fast
console" patch which processes a block of text via
"cooking" efficiently.
Wed Jun 18 15:25:50 1997 Theodore Ts'o <[email protected]>
* tty_io.c (init_dev, release_dev): Applied fix suggested by Bill
Hawes to prevent race conditions in the tty code.
* n_tty.c (n_tty_chars_in_buffer): Applied fix suggested by Bill
Hawes so that n_tty_chars_in_buffer returns the correct
value in the case when the tty is in cannonical mode. (To
avoid a pty deadlock with telnetd.)
Thu Feb 27 01:53:08 1997 Theodore Ts'o <[email protected]>
* serial.c (change_speed): Add support for the termios flag
CMSPAR, which allows the user to select stick parity.
(i.e, if PARODD is set, the parity bit is always 1; if
PARRODD is not set, then the parity bit is always 0).
Wed Feb 26 19:03:10 1997 Theodore Ts'o <[email protected]>
* serial.c (cleanup_module): Fix memory leak when using the serial
driver as a module; make sure tmp_buf gets freed!
Tue Feb 25 11:01:59 1997 Theodore Ts'o <[email protected]>
* serial.c (set_modem_info): Add support for setting and clearing
the OUT1 and OUT2 bits. (For special case UART's, usually
for half-duplex.)
(autoconfig, change_speed): Fix TI 16750 support.
Sun Feb 16 00:14:43 1997 Theodore Ts'o <[email protected]>
* tty_io.c (release_dev): Add sanity check to make sure there are
no waiters on tty->read_wait or tty->write_wait.
* serial.c (rs_init): Don't autoconfig a device if the I/O region
is already reserved.
* serial.c (serial_proc_info): Add support for /proc/serial.
Thu Feb 13 00:49:10 1997 Theodore Ts'o <[email protected]>
* serial.c (receive_chars): When the UART repotrs an overrun
condition, it does so with a valid character. Changed to
not throw away the valid character, but instead report the
overrun after the valid character.
* serial.c: Added new #ifdef's for some of the advanced serial
driver features. A minimal driver that only supports COM
1/2/3/4 without sharing serial interrupts only takes 17k;
the full driver takes 32k.
Wed Feb 12 14:50:44 1997 Theodore Ts'o <[email protected]>
* vt.c:
* pty.c:
* tty_ioctl.c:
* serial.c: Update routines to use the new 2.1 memory access
routines.
Wed Dec 4 07:51:52 1996 Theodore Ts'o <[email protected]>
* serial.c (change_speed): Use save_flags(); cli() and
restore_flags() in order to ensure we don't accidentally
turn on interrupts when starting up the port.
(startup): Move the insertion of serial structure into the
IRQ chain earlier into the startup processing. Interrupts
should be off this whole time, but we eventually will want
to reduce this window.
Thu Nov 21 10:05:22 1996 Theodore Ts'o <[email protected]>
* tty_ioctl.c (tty_wait_until_sent): Always check the driver
wait_until_ready routine, even if there are no characters
in the xmit buffer. (There may be charactes in the device
FIFO.)
(n_tty_ioctl): Add new flag tty->flow_stopped which
indicates whether the tty is stopped due to a request by
the TCXONC ioctl (used by tcflow). If so, don't let an
incoming XOFF character restart the tty. The tty can only
be restarted by another TCXONC request.
* tty_io.c (start_tty): Don't allow the tty to be restarted if
tty->flow_stopped is true.
* n_tty.c (n_tty_receive_char): If tty->flow_stopped is true, and
IXANY is set, don't eat a character trying to restart the
tty.
* serial.c (startup): Remove need for MCR_noint from the
async_struct structure. Only turn on DTR and RTS if the
baud rate is not zero.
(change_speed): More accurately calculate the timeout
value based on the word size. Move responsibility of
hangup when speed becomes B0 to rs_set_termios()
(set_serial_info): When changing the UART type set the
current xmit_fifo_size as well as the permanent
xmit_fifo_size.
(rs_ioctl): Fix TCSBRK (used by tcdrain) and TCSBRKP
ioctls to return EINTR if interrupted by a signal.
(rs_set_termios): If the baud rate changes to or from B0,
this function is now responsible for setting or clearing
DTR and RTS. DTR and RTS are only be changed on the
transition to or from the B0 state.
(rs_close): Wait for the characters to drain based on
info->timeout. At low baud rates (50 bps), it may take a
long time for the FIFO to completely drain out!
(rs_wait_until_sent): Fixed timeout handling. Now
releases control to the scheduler, but checks frequently
enough so that the function is sensitive enough to pass
the timing requirements of the NIST-PCTS.
(block_til_ready): When opening the device, don't turn on
DTR and RTS if the baud rate is B0.
Thu Nov 14 00:06:09 1996 Theodore Ts'o <[email protected]>
* serial.c (autoconfig): Fix autoconfiguration problems;
info->flags wasn't getting initialized from the state
structure. Put in more paranoid test for the 16750.
Fri Nov 8 20:19:50 1996 Theodore Ts'o <[email protected]>
* n_tty.c (n_tty_flush_buffer): Only call driver->unthrottle() if
the tty was previous throttled.
(n_tty_set_termios, write_chan): Add changes suggested by
Simon P. Allen to allow hardware cooking.
* tty_ioctl.c (set_termios): If we get a signal while waiting for
the tty to drain, return -EINTR.
* serial.c (change_speed): Add support for CREAD, as required by
POSIX.
Sat Nov 2 20:43:10 1996 Theodore Ts'o <[email protected]>
* serial.c: Wholesale changes. Added support for the Startech
16650 and 16650V2 chips. (WARNING: the new startech
16650A may or may not work!) Added support for the
TI16750 (not yet tested). Split async_struct into a
transient part (async_struct) and a permanent part
(serial_state) which contains the configuration
information for the ports. Added new driver routines
wait_until_sent() and send_xchar() to help with POSIX
compliance. Added support for radio clocks which waggle
the carrier detect line (CONFIG_HARD_PPS).
* tty_ioctl.c (tty_wait_until_sent): Added call to new driver
function tty->driver.wait_until_sent(), which returns when
the tty's device xmit buffers are drained. Needed for
full POSIX compliance.
(send_prio_char): New function, called by the ioctl's
TCIOFF and TCION; uses the new driver call send_xchar(),
which will send the XON or XOFF character at high priority
(and even if tty output is stopped).
Wed Jun 5 18:52:04 1996 Theodore Ts'o <[email protected]>
* pty.c (pty_close): When closing a pty, make sure packet mode is
cleared.
Sun May 26 09:33:52 1996 Theodore Ts'o <[email protected]>
* vesa_blank.c (set_vesa_blanking): Add missing verify_area() call.
* selection.c (set_selection): Add missing verify_area() call.
* tty_io.c (tty_ioctl): Add missing verify_area() calls.
* serial.c (rs_ioctl): Add missing verify_area() calls.
(rs_init): Allow initialization of serial driver
configuration from a module.
* random.c (extract_entropy): Add missing verify_area call.
Don't limit number of characters returned to
32,768. Extract entropy is now no longer a inlined
function.
(random_read): Check return value in case extract_entropy
returns an error.
(secure_tcp_sequence_number): New function which returns a
secure TCP sequence number. This is needed to prevent some
nasty TCP hijacking attacks.
(init_std_data): Initialize using gettimeofday() instead of
struct timeval xtime.
(fast_add_entropy_word, add_entropy_word): Rename the
inline function add_entropy_word() to
fast_add_entropy_word(). Make add_entropy_word() be the
non-inlined function which is used in non-timing critical
places, in order to save space.
(initialize_benchmark, begin_benchmark, end_benchmark): New
functions defined when RANDOM_BENCHMARK is defined. They
allow us to benchmark the speed of the
add_timer_randomness() call.
(int_ln, rotate_left): Add two new inline functions with
i386 optimized asm instructions. This speeds up the
critical add_entropy_word() and add_timer_randomness()
functions, which are called from interrupt handlers.
Tue May 7 22:51:11 1996 <[email protected]>
* random.c (add_timer_randomness): Limit the amount randomness
that we estimate to 12 bits. (An arbitrary amount).
(extract_entropy): To make it harder to analyze the hash
function, fold the hash function in half using XOR, and
use the folded result as the value to emit to the user.
Also, add timer randomness each pass through the
exact_entropy call, to increase the amount of unknown
values during the extraction process.
(random_ioctl): Use IOR/IOW definitions to define the
ioctl values used by the /dev/random driver. Allow the
old ioctl values to be used for backwards compatibility
(for a limited amount of time).
Wed Apr 24 14:02:04 1996 Theodore Ts'o <[email protected]>
* random.c (add_timer_randomness): Use 2nd derivative as well to
better estimate entropy.
(rand_initialize): Explicitly initialize all the pointers
to NULL. (Clearing pointers using memset isn't portable.)
Initialize the random pool with OS-dependent data.
(random_write): Add sanity checking to the arguments to
random_write(), so that bad arguments won't cause a kernel
SEGV.
(random_read): Update the access time of the device inode
when you return data to the user.
(random_ioctl): Wake up the random_wait channel when there
are only WAIT_INPUT_BITS available. Add more paranoia
checks to make sure entropy_count doesn't go beyond the
bounds of (0, POOLSIZE). Add a few missing verify_area
checks. Add support for the RNDCLEARPOOL ioctl, which
zaps the random pool.
(add_timer_randomness): Wake up the random_wait
channel only when there are WAIT_INPUT_BITS available.
(random_select): Allow a random refresh daemon process to
select on /dev/random for writing; wake up the daemon when
there are less than WAIT_OUTPUT_BITS bits of randomness
available.
Tue Apr 23 22:56:07 1996 <[email protected]>
* tty_io.c (init_dev): Change return code when user attempts to
open master pty which is already open from EAGAIN to EIO,
to match with BSD expectations. EIO is more correct
anyway, since EAGAIN implies that retrying will be
successful --- which it might be.... Eventually!!
* pty.c (pty_open, pty_close): Fix wait loop so that we don't
busy loop while waiting for the master side to open.
Fix tty opening/closing logic. TTY_SLAVE_CLOSED was
renamed to TTY_OTHER_CLOSED, so that the name is more
descriptive. Also fixed code so that the tty flag
actually works correctly now....
Mon Apr 1 10:22:01 1996 <[email protected]>
* serial.c (rs_close): Cleaned up modularization changes.
Remove code which forced line discipline back to N_TTY
this is done in the tty upper layers, and there's no
reason to do it here. (Making this change also
removed the requirement that the serial module access
the internal kernel symbol "ldiscs".)
* tty_io.c (tty_init): Formally register a tty_driver entry for
/dev/tty (device 4, 0) and /dev/console (device 5, 0).
This guarantees that major device numbers 4 and 5 will be
reserved for the tty subsystem (as they have to be because
of /dev/tty and /dev/console). Removed tty_regdev, as
this interface is no longer necessary.
Sun Mar 17 20:42:47 GMT 1996 <[email protected]>
* serial.c : modularisation (changes in linux/fs/device.c allow
kerneld to automatically load the serial module).
* Makefile, Config.in : serial modularisation adds.
* tty_io.c : tty_init_ctty used by to register "cua" driver just
for the /dev/tty device (5,0). Added tty_regdev.
* serial.c (shutdown, rs_ioctl) : when port shuts down wakeup processes
waiting on delta_msr_wait. The TIOCMIWAIT ioctl returns EIO
if no change was done since the time of call.
Sat Mar 16 14:33:13 1996 <[email protected]>
* tty_io.c (disassociate_ctty): If disassociate_ctty is called by
exit, do not perform an implicit vhangup on a pty.
Fri Feb 9 14:15:47 1996 <[email protected]>
* serial.c (block_til_ready): Fixed another race condition which
happens if a hangup happens during the open.
Wed Jan 10 10:08:00 1996 <[email protected]>
* serial.c (block_til_ready): Remove race condition which happened
if a hangup condition happened during the setup of the
UART, before rs_open() called block_til_ready(). This
caused the info->count counter to be erroneously
decremented.
* serial.c (startup, rs_open): Remove race condition that could
cause a memory leak of one page. (Fortunately, both race
conditions were relatively rare in practice.)
Tue Dec 5 13:21:27 1995 <[email protected]>
* serial.c (check_modem_status, rs_ioctl): Support the new
ioctl()'s TIOCGICOUNT, TIOCMIWAIT. These allow an
application program to wait on a modem serial register
status bit change, and to find out how many changes have
taken place for the MSR bits.
(rs_write): Eliminate a race condition which is introduced
if it is necessary to wait for the semaphore.
Sat Nov 4 17:14:45 1995 <[email protected]>
* tty_io.c (tty_init): Move registration of TTY_MAJOR and
TTY_AUX_MAJOR to the end, so that /proc/devices looks
prettier.
* pty.c (pty_init): Use new major numbers for PTY master and slave
devices. This allow us to have more than 64 pty's. We
register the old pty devices for backwards compatibility.
Note that a system should either be using the old pty
devices or the new pty devices --- in general, it should
try to use both, since they map into the same pty table.
The old pty devices are strictly for backwards compatibility.
Wed Oct 11 12:45:24 1995 <[email protected]>
* tty_io.c (disassociate_ctty): If disassociate_ctty is called by
exit, perform an implicit vhangup on the tty.
* pty.c (pty_close): When the master pty is closed, send a hangup
to the slave pty.
(pty_open): Use the flag TTY_SLAVE_CLOSED to test to see
if there are any open slave ptys, instead of using
tty->link->count. The old method got confused if there
were processes that had hung-up file descriptors on the
slave tty.
Tue May 2 00:53:25 1995 <[email protected]>
* tty_io.c (tty_set_ldisc): Wait until the output buffer is
drained before closing the old line discipline --- needed
in only one case: XON/XOFF processing.
* n_tty.c (n_tty_close): Don't bother waiting until the output
driver is closed; in general, the line discipline
shouldn't care if the hardware is finished
transmitting before the line discipline terminates.
* tty_io.c (release_dev): Shutdown the line discipline after
decrementing the tty count variable; but set the
TTY_CLOSING flag so that we know that this tty structure
isn't long for this world.
* tty_io.c (init_dev): Add sanity code to check to see if
TTY_CLOSING is set on a tty structure; if so, something
bad has happened (probably a line discipline close blocked
when it shouldn't have; so do a kernel printk and then
return an error).
Wed Apr 26 10:23:44 1995 Theodore Y. Ts'o <tytso@localhost>
* tty_io.c (release_dev): Try to shutdown the line discipline
*before* decrementing the tty count variable; this removes
a potential race condition which occurs when the line
discipline close blocks, and another process then tries
open the same serial port.
* serial.c (rs_hangup): When hanging up, flush the output buffer
before shutting down the UART. Otherwise the line
discipline close blocks waiting for the characters to get
flushed, which never happens until the serial port gets reused.
Wed Apr 12 08:06:16 1995 Theodore Y. Ts'o <tytso@localhost>
* serial.c (do_serial_hangup, do_softint, check_modem_status,
rs_init): Hangups are now scheduled via a separate tqueue
structure in the async_struct structure, tqueue_hangup.
This task is pushed on to the tq_schedule queue, so that
it is processed synchronously by the scheduler.
Sat Feb 18 12:13:51 1995 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (disassociate_ctty, tty_open, tty_ioctl): Clear
current->tty_old_pgrp field when a session leader
acquires a controlling tty, and after a session leader
has disassociated from a controlling tty.
Fri Feb 17 09:34:09 1995 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_interrupt_single, rs_interrupt, rs_interrupt_multi):
Change the number of passes made from 64 to be 256,
configurable with the #define RS_ISR_PASS_LIMIT.
* serial.c (rs_init, set_serial_info, get_serial_info, rs_close):
Remove support for closing_wait2. Instead, set
tty->closing and rely on the line discipline to prevent
echo wars.
* n_tty.c (n_tty_receive_char): IEXTEN does not need to be
enabled in order for IXANY to be active.
If tty->closing is set, then only process XON and XOFF
characters.
Sun Feb 12 23:57:48 1995 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_timer): Change the interrupt poll time from 60
seconds to 10 seconds, configurable with the #define
RS_STROBE_TIME.
* serial.c (rs_interrupt_multi, startup, shutdown, rs_ioctl,
set_multiport_struct, get_multiport_struct): Add
provisions for a new type of interrupt service routine,
which better supports multiple serial ports on a single
IRQ.
Sun Feb 5 19:35:11 1995 Theodore Y. Ts'o (tytso@rt-11)
* tty_ioctl.c (n_tty_ioctl, set_termios, tty_wait_until_sent):
* serial.c (rs_ioctl, rs_close):
* cyclades.c (cy_ioctl, cy_close):
* n_tty.c (n_tty_close): Rename wait_until_sent to
tty_wait_until_sent, so that it's a better name to export
in ksyms.c.
Sat Feb 4 23:36:20 1995 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_close): Added missing check for closing_wait2 being
ASYNC_CLOSING_WAIT_NONE.
Thu Jan 26 09:02:49 1995 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_init, set_serial_info, get_serial_info,
rs_close): Support close_wait in the serial driver.
This is helpful for slow devices (like serial
plotters) so that their outputs don't get flushed upon
device close. This has to be configurable because
normally we don't want ports to be hung up for long
periods of time during a close when they are not
connected to a device, or the device is powered off.
The default is to wait 30 seconds; in the case of a
very slow device, the close_wait timeout should be
lengthened. If it is set to 0, the kernel will wait
forever for all of the data to be transmitted.
Thu Jan 17 01:17:20 1995 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (startup, change_speed, rs_init): Add support to detect
the StarTech 16650 chip. Treat it as a 16450 for now,
because of its FIFO bugs.
Thu Jan 5 21:21:57 1995 <[email protected]>
* serial.c: (receive_char): Added counter to prevent infinite loop
when a PCMCIA serial device is ejected.
Thu Dec 29 17:53:48 1994 <[email protected]>
* tty_io.c (check_tty_count): New procedure which checks
tty->count to make sure that it matches with the number of
open file descriptors which point at the structure. If
the number doesn't match, it prints a warning message.
Wed Dec 28 15:41:51 1994 <[email protected]>
* tty_io.c (do_tty_hangup, disassociate_ctty): At hangup time,
save the tty's current foreground process group in the
session leader's task structure. When the session leader
terminates, send a SIGHUP, SIGCONT to that process group.
This is not required by POSIX, but it's not prohibited
either, and it appears to be the least intrusive way
to fix a problem that dialup servers have with
orphaned process groups caused by modem hangups.
Thu Dec 8 14:52:11 1994 <[email protected]>
* serial.c (rs_ioctl): Don't allow most ioctl's if the serial port
isn't initialized.
* serial.c (rs_close): Don't clear the IER if the serial port
isn't initialized.
* serial.c (block_til_ready): Don't try to block on the dialin
port if the serial port isn't initialized.
Wed Dec 7 10:48:30 1994 Si Park ([email protected])
* tty_io.c (tty_register_driver): Fix bug when linking onto
the tty_drivers list. We now test that there are elements
already on the list before setting the back link from the
first element to the new driver.
* tty_io.c (tty_unregister_driver): Fix bug in unlinking the
specified driver from the tty_drivers list. We were not
setting the back link correctly. This used to result in
a dangling back link pointer and cause panics on the next
call to get_tty_driver().
Tue Nov 29 10:21:09 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (tty_unregister_driver): Fix bug in
tty_unregister_driver where the pointer to the refcount is
tested, instead of the refcount itself. This caused
tty_unregister_driver to always return EBUSY.
Sat Nov 26 11:59:24 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (tty_ioctl): Add support for the new ioctl
TIOCTTYGSTRUCT, which allow a kernel debugging program
direct read access to the tty and tty_driver structures.
Fri Nov 25 17:26:22 1994 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_set_termios): Don't wake up processes blocked in
open when the CLOCAL flag changes, since a blocking
open only samples the CLOCAL flag once when it blocks,
and doesn't check it again. (n.b. FreeBSD has a
different behavior for blocking opens; it's not clear
whether Linux or FreeBSD's interpretation is correct.
POSIX doesn't give clear guidance on this issue, so
this may change in the future....)
* serial.c (block_til_ready): Use the correct termios structure to
check the CLOCAL flag. If the cuaXX device is active,
then check the saved termios for the ttySXX device.
Otherwise, use the currently active termios structure.
Sun Nov 6 21:05:44 1994 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (change_speed): Add support for direct access of
57,600 and 115,200 bps.
Wed Nov 2 10:32:36 1994 Theodore Y. Ts'o (tytso@rt-11)
* n_tty.c (n_tty_receive_room): Only allow excess characters
through if we are in ICANON mode *and* there are other no
pending lines in the buffer. Otherwise cut and paste over
4k breaks.
Sat Oct 29 18:17:34 1994 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_ioctl, get_lsr_info): Added patch suggested by Arne
Riiber so that user mode programs can tell when the
transmitter shift register is empty.
Thu Oct 27 23:14:29 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_ioctl.c (wait_until_sent): Added debugging printk statements
(under the #ifdef TTY_DEBUG_WAIT_UNTIL_SENT)
* serial.c (rs_interrupt, rs_interrupt_single, receive_chars,
change_speed, rs_close): rs_close now disables receiver
interrupts when closing the serial port. This allows the
serial port to close quickly when Linux and a modem (or a
mouse) are engaged in an echo war; when closing the serial
port, we now first stop listening to incoming characters,
and *then* wait for the transmit buffer to drain.
In order to make this change, the info->read_status_mask
is now used to control what bits of the line status
register are looked at in the interrupt routine in all
cases; previously it was only used in receive_chars to
select a few of the status bits.
Mon Oct 24 23:36:21 1994 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_close): Add a timeout to the transmitter flush
loop; this is just a sanity check in case we have flaky
(or non-existent-but-configured-by-the-user) hardware.
Fri Oct 21 09:37:23 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (tty_fasync): When asynchronous I/O is enabled, if the
process or process group has not be specified yet, set it
to be the tty's process group, or if that is not yet set,
to the current process's pid.
Thu Oct 20 23:17:28 1994 Theodore Y. Ts'o (tytso@rt-11)
* n_tty.c (n_tty_receive_room): If we are doing input
canonicalization, let as many characters through as
possible, so that the excess characters can be "beeped".
Tue Oct 18 10:02:43 1994 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_start): Removed an incorrect '!' that was
preventing transmit interrupts from being re-enabled in
rs_start(). Fortunately in most cases it would be
re-enabled elsewhere, but this still should be fixed
correctly.
Sun Oct 9 23:46:03 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (do_tty_hangup): If the tty driver flags
TTY_DRIVER_RESET_TERMIOS is set, then reset the termios
settings back to the driver's initial configuration. This
allows the termios settings to be reset even if a process
has hung up file descriptors keeping a pty's termios from
being freed and reset.
* tty_io.c (release_dev): Fix memory leak. The pty's other
termios structure should also be freed.
* serial.c (rs_close, shutdown): Change how we wait for the
transmitter to completely drain before shutting down the
serial port. We now do it by scheduling in another
process instead of busy looping with the interrupts turned
on. This may eliminate some race condition problems that
some people seem to be reporting.
Sun Sep 25 14:18:14 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (release_dev): When freeing a tty make sure that both
the tty and the o_tty (if present) aren't a process's
controlling tty. (Previously, we only checked the tty.)
* serial.c (change_speed): Only enable the Modem Status
Interrupt for a port if CLOCAL is not set or CRTSCTS
is set. If we're not checking the carrier detect and
CTS line, there's no point in enabling the modem
status interrupt. This will save spurious interrupts
from slowing down systems who have terminals that
don't support either line. (Of course, if you want
only one of CD and CTS support, you will need a
properly wired serial cable.)
Thu Sep 22 08:32:48 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (do_SAK): Return if tty is null.
* tty_io.c (_tty_name): Return "NULL tty" if the passed in tty is
NULL.
Sat Sep 17 13:19:25 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_ioctl.c (n_tty_ioctl): Fix TIOCGLCKTRMIOS and
TIOCSLCKTRMIOS, which were totally broken. Remove
extra indirection from argument; it should be a struct
termios *, not a struct termios **.
&real_tty->termios_locked should have been
real_tty->termios_locked. This caused us to be
reading and writing the termios_locked structure to
random places in kernel memory.
* tty_io.c (release_dev): Oops! Forgot to delete a critical kfree
of the locked_termios. This leaves the locked_termios
structure pointed at a freed object.
Fri Sep 16 08:13:25 1994 Theodore Y. Ts'o (tytso@rt-11)
* tty_io.c (tty_open): Don't check for an exclusive open until
after the device specific open routine has been called.
Otherwise, the serial device ref counting will be screwed
up.
* serial.c (rs_open, block_til_ready): Don't set termios structure
until after block_til_ready has returned successfully.
Modify block_til_ready to check the normal_termios
structure directly, so it doesn't rely on termios being
set before it's called.
Thu Sep 15 23:34:01 1994 Theodore Y. Ts'o (tytso@rt-11)
* serial.c (rs_close): Turn off interrupts during rs_close() to
prevent a race condition with the hangup code (which
runs during a software interrupt).
* tty_io.c (release_dev): Don't free the locked_termios structure;
its state must be retained across device opens.
* tty_io.c (tty_unregister_driver): Added function to unregister a
tty driver. (For loadable device drivers.)

2
drivers/char/agp/Kconfig
View file

@ -57,7 +57,7 @@ config AGP_AMD
config AGP_AMD64
tristate "AMD Opteron/Athlon64 on-CPU GART support"
depends on AGP && X86
depends on AGP && X86 && K8_NB
help
This option gives you AGP support for the GLX component of
X using the on-CPU northbridge of the AMD Athlon64/Opteron CPUs.

125
drivers/char/agp/intel-agp.c
View file

@ -11,6 +11,9 @@
#include <asm/smp.h>
#include "agp.h"
int intel_agp_enabled;
EXPORT_SYMBOL(intel_agp_enabled);
/*
* If we have Intel graphics, we're not going to have anything other than
* an Intel IOMMU. So make the correct use of the PCI DMA API contingent
@ -65,6 +68,10 @@
#define PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB 0x0062
#define PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB 0x006a
#define PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG 0x0046
#define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB 0x0100
#define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_IG 0x0102
#define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB 0x0104
#define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_IG 0x0106
/* cover 915 and 945 variants */
#define IS_I915 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB || \
@ -99,7 +106,9 @@
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB)
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
extern int agp_memory_reserved;
@ -148,6 +157,25 @@ extern int agp_memory_reserved;
#define INTEL_I7505_AGPCTRL 0x70
#define INTEL_I7505_MCHCFG 0x50
#define SNB_GMCH_CTRL 0x50
#define SNB_GMCH_GMS_STOLEN_MASK 0xF8
#define SNB_GMCH_GMS_STOLEN_32M (1 << 3)
#define SNB_GMCH_GMS_STOLEN_64M (2 << 3)
#define SNB_GMCH_GMS_STOLEN_96M (3 << 3)
#define SNB_GMCH_GMS_STOLEN_128M (4 << 3)
#define SNB_GMCH_GMS_STOLEN_160M (5 << 3)
#define SNB_GMCH_GMS_STOLEN_192M (6 << 3)
#define SNB_GMCH_GMS_STOLEN_224M (7 << 3)
#define SNB_GMCH_GMS_STOLEN_256M (8 << 3)
#define SNB_GMCH_GMS_STOLEN_288M (9 << 3)
#define SNB_GMCH_GMS_STOLEN_320M (0xa << 3)
#define SNB_GMCH_GMS_STOLEN_352M (0xb << 3)
#define SNB_GMCH_GMS_STOLEN_384M (0xc << 3)
#define SNB_GMCH_GMS_STOLEN_416M (0xd << 3)
#define SNB_GMCH_GMS_STOLEN_448M (0xe << 3)
#define SNB_GMCH_GMS_STOLEN_480M (0xf << 3)
#define SNB_GMCH_GMS_STOLEN_512M (0x10 << 3)
static const struct aper_size_info_fixed intel_i810_sizes[] =
{
{64, 16384, 4},
@ -270,7 +298,7 @@ static void intel_agp_insert_sg_entries(struct agp_memory *mem,
j++;
}
} else {
/* sg may merge pages, but we have to seperate
/* sg may merge pages, but we have to separate
* per-page addr for GTT */
unsigned int len, m;
@ -294,6 +322,13 @@ static void intel_agp_insert_sg_entries(struct agp_memory *mem,
off_t pg_start, int mask_type)
{
int i, j;
u32 cache_bits = 0;
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
{
cache_bits = I830_PTE_SYSTEM_CACHED;
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
@ -614,7 +649,7 @@ static struct aper_size_info_fixed intel_i830_sizes[] =
static void intel_i830_init_gtt_entries(void)
{
u16 gmch_ctrl;
int gtt_entries;
int gtt_entries = 0;
u8 rdct;
int local = 0;
static const int ddt[4] = { 0, 16, 32, 64 };
@ -706,6 +741,63 @@ static void intel_i830_init_gtt_entries(void)
gtt_entries = 0;
break;
}
} else if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB) {
/*
* SandyBridge has new memory control reg at 0x50.w
*/
u16 snb_gmch_ctl;
pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
switch (snb_gmch_ctl & SNB_GMCH_GMS_STOLEN_MASK) {
case SNB_GMCH_GMS_STOLEN_32M:
gtt_entries = MB(32) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_64M:
gtt_entries = MB(64) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_96M:
gtt_entries = MB(96) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_128M:
gtt_entries = MB(128) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_160M:
gtt_entries = MB(160) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_192M:
gtt_entries = MB(192) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_224M:
gtt_entries = MB(224) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_256M:
gtt_entries = MB(256) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_288M:
gtt_entries = MB(288) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_320M:
gtt_entries = MB(320) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_352M:
gtt_entries = MB(352) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_384M:
gtt_entries = MB(384) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_416M:
gtt_entries = MB(416) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_448M:
gtt_entries = MB(448) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_480M:
gtt_entries = MB(480) - KB(size);
break;
case SNB_GMCH_GMS_STOLEN_512M:
gtt_entries = MB(512) - KB(size);
break;
}
} else {
switch (gmch_ctrl & I855_GMCH_GMS_MASK) {
case I855_GMCH_GMS_STOLEN_1M:
@ -1357,6 +1449,8 @@ static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
case PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB:
case PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB:
case PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB:
case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB:
case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB:
*gtt_offset = *gtt_size = MB(2);
break;
default:
@ -2338,9 +2432,9 @@ static const struct intel_driver_description {
NULL, &intel_g33_driver },
{ PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
NULL, &intel_g33_driver },
{ PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB, PCI_DEVICE_ID_INTEL_PINEVIEW_M_IG, 0, "Pineview",
{ PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB, PCI_DEVICE_ID_INTEL_PINEVIEW_M_IG, 0, "GMA3150",
NULL, &intel_g33_driver },
{ PCI_DEVICE_ID_INTEL_PINEVIEW_HB, PCI_DEVICE_ID_INTEL_PINEVIEW_IG, 0, "Pineview",
{ PCI_DEVICE_ID_INTEL_PINEVIEW_HB, PCI_DEVICE_ID_INTEL_PINEVIEW_IG, 0, "GMA3150",
NULL, &intel_g33_driver },
{ PCI_DEVICE_ID_INTEL_GM45_HB, PCI_DEVICE_ID_INTEL_GM45_IG, 0,
"GM45", NULL, &intel_i965_driver },
@ -2355,13 +2449,17 @@ static const struct intel_driver_description {
{ PCI_DEVICE_ID_INTEL_G41_HB, PCI_DEVICE_ID_INTEL_G41_IG, 0,
"G41", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG, 0,
"Ironlake/D", NULL, &intel_i965_driver },
"HD Graphics", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG, 0,
"Ironlake/M", NULL, &intel_i965_driver },
"HD Graphics", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG, 0,
"Ironlake/MA", NULL, &intel_i965_driver },
"HD Graphics", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG, 0,
"Ironlake/MC2", NULL, &intel_i965_driver },
"HD Graphics", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_IG, 0,
"Sandybridge", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_IG, 0,
"Sandybridge", NULL, &intel_i965_driver },
{ 0, 0, 0, NULL, NULL, NULL }
};
@ -2371,7 +2469,7 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
struct agp_bridge_data *bridge;
u8 cap_ptr = 0;
struct resource *r;
int i;
int i, err;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
@ -2463,7 +2561,10 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
}
pci_set_drvdata(pdev, bridge);
return agp_add_bridge(bridge);
err = agp_add_bridge(bridge);
if (!err)
intel_agp_enabled = 1;
return err;
}
static void __devexit agp_intel_remove(struct pci_dev *pdev)
@ -2568,6 +2669,8 @@ static struct pci_device_id agp_intel_pci_table[] = {
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB),
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB),
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB),
ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB),
ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB),
{ }
};

2
drivers/char/applicom.c
View file

@ -14,7 +14,7 @@
/* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter */
/* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3 */
/* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes */
/* adresses de base des cartes, IOCTL 6 plus complet */
/* addresses de base des cartes, IOCTL 6 plus complet */
/* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification */
/* de code autre que le texte V2.6.1 en V2.8.0 */
/*****************************************************************************/

16
drivers/char/cyclades.c
View file

@ -158,13 +158,11 @@ static unsigned int cy_isa_addresses[] = {
#define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)
#ifdef MODULE
static long maddr[NR_CARDS];
static int irq[NR_CARDS];
module_param_array(maddr, long, NULL, 0);
module_param_array(irq, int, NULL, 0);
#endif
#endif /* CONFIG_ISA */
@ -598,12 +596,6 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
save_car = readb(base_addr + (CyCAR << index));
cy_writeb(base_addr + (CyCAR << index), save_xir);
/* validate the port# (as configured and open) */
if (channel + chip * 4 >= cinfo->nports) {
cy_writeb(base_addr + (CySRER << index),
readb(base_addr + (CySRER << index)) & ~CyTxRdy);
goto end;
}
info = &cinfo->ports[channel + chip * 4];
tty = tty_port_tty_get(&info->port);
if (tty == NULL) {
@ -3316,13 +3308,10 @@ static int __init cy_detect_isa(void)
unsigned short cy_isa_irq, nboard;
void __iomem *cy_isa_address;
unsigned short i, j, cy_isa_nchan;
#ifdef MODULE
int isparam = 0;
#endif
nboard = 0;
#ifdef MODULE
/* Check for module parameters */
for (i = 0; i < NR_CARDS; i++) {
if (maddr[i] || i) {
@ -3332,7 +3321,6 @@ static int __init cy_detect_isa(void)
if (!maddr[i])
break;
}
#endif
/* scan the address table probing for Cyclom-Y/ISA boards */
for (i = 0; i < NR_ISA_ADDRS; i++) {
@ -3353,11 +3341,10 @@ static int __init cy_detect_isa(void)
iounmap(cy_isa_address);
continue;
}
#ifdef MODULE
if (isparam && i < NR_CARDS && irq[i])
cy_isa_irq = irq[i];
else
#endif
/* find out the board's irq by probing */
cy_isa_irq = detect_isa_irq(cy_isa_address);
if (cy_isa_irq == 0) {
@ -4208,3 +4195,4 @@ module_exit(cy_cleanup_module);
MODULE_LICENSE("GPL");
MODULE_VERSION(CY_VERSION);
MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR);
MODULE_FIRMWARE("cyzfirm.bin");

2
drivers/char/hvc_console.c
View file

@ -146,7 +146,7 @@ static void hvc_console_print(struct console *co, const char *b,
return;
/* This console adapter was removed so it is not usable. */
if (vtermnos[index] < 0)
if (vtermnos[index] == -1)
return;
while (count > 0 || i > 0) {

2
drivers/char/hvc_iseries.c
View file

@ -353,7 +353,7 @@ static void hvc_close_event(struct HvLpEvent *event)
if (!hvlpevent_is_int(event)) {
printk(KERN_WARNING
"hvc: got unexpected close acknowlegement\n");
"hvc: got unexpected close acknowledgement\n");
return;
}

6
drivers/char/hvc_iucv.c
View file

@ -139,6 +139,8 @@ struct hvc_iucv_private *hvc_iucv_get_private(uint32_t num)
*
* This function allocates a new struct iucv_tty_buffer element and, optionally,
* allocates an internal data buffer with the specified size @size.
* The internal data buffer is always allocated with GFP_DMA which is
* required for receiving and sending data with IUCV.
* Note: The total message size arises from the internal buffer size and the
* members of the iucv_tty_msg structure.
* The function returns NULL if memory allocation has failed.
@ -154,7 +156,7 @@ static struct iucv_tty_buffer *alloc_tty_buffer(size_t size, gfp_t flags)
if (size > 0) {
bufp->msg.length = MSG_SIZE(size);
bufp->mbuf = kmalloc(bufp->msg.length, flags);
bufp->mbuf = kmalloc(bufp->msg.length, flags | GFP_DMA);
if (!bufp->mbuf) {
mempool_free(bufp, hvc_iucv_mempool);
return NULL;
@ -237,7 +239,7 @@ static int hvc_iucv_write(struct hvc_iucv_private *priv,
if (!rb->mbuf) { /* message not yet received ... */
/* allocate mem to store msg data; if no memory is available
* then leave the buffer on the list and re-try later */
rb->mbuf = kmalloc(rb->msg.length, GFP_ATOMIC);
rb->mbuf = kmalloc(rb->msg.length, GFP_ATOMIC | GFP_DMA);
if (!rb->mbuf)
return -ENOMEM;

2
drivers/char/hw_random/n2-drv.c
View file

@ -71,7 +71,7 @@ MODULE_VERSION(DRV_MODULE_VERSION);
* x22 + x21 + x17 + x15 + x13 + x12 + x11 + x7 + x5 + x + 1
*
* The RNG_CTL_VCO value of each noise cell must be programmed
* seperately. This is why 4 control register values must be provided
* separately. This is why 4 control register values must be provided
* to the hypervisor. During a write, the hypervisor writes them all,
* one at a time, to the actual RNG_CTL register. The first three
* values are used to setup the desired RNG_CTL_VCO for each entropy

2
drivers/char/ip2/i2hw.h
View file

@ -559,7 +559,7 @@ Loadware may be sent to the board in two ways:
2) It may be hard-coded into your source by including a .h file (typically
supplied by Computone), which declares a data array and initializes every
element. This acheives the same result as if an entire loadware file had
element. This achieves the same result as if an entire loadware file had
been read into the array.
This requires more data space in your program, but access to the file system

26
drivers/char/ip2/ip2main.c
View file

@ -208,6 +208,7 @@ static int DumpFifoBuffer( char __user *, int);
static void ip2_init_board(int, const struct firmware *);
static unsigned short find_eisa_board(int);
static int ip2_setup(char *str);
/***************/
/* Static Data */
@ -263,7 +264,7 @@ static int tracewrap;
/* Macros */
/**********/
#if defined(MODULE) && defined(IP2DEBUG_OPEN)
#ifdef IP2DEBUG_OPEN
#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] ttyc=%d, modc=%x -> %s\n", \
tty->name,(pCh->flags), \
tty->count,/*GET_USE_COUNT(module)*/0,s)
@ -285,7 +286,10 @@ MODULE_AUTHOR("Doug McNash");
MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
MODULE_LICENSE("GPL");
#define MAX_CMD_STR 50
static int poll_only;
static char cmd[MAX_CMD_STR];
static int Eisa_irq;
static int Eisa_slot;
@ -309,6 +313,8 @@ module_param_array(io, int, NULL, 0);
MODULE_PARM_DESC(io, "I/O ports for IntelliPort Cards");
module_param(poll_only, bool, 0);
MODULE_PARM_DESC(poll_only, "Do not use card interrupts");
module_param_string(ip2, cmd, MAX_CMD_STR, 0);
MODULE_PARM_DESC(ip2, "Contains module parameter passed with 'ip2='");
/* for sysfs class support */
static struct class *ip2_class;
@ -487,7 +493,6 @@ static const struct firmware *ip2_request_firmware(void)
return fw;
}
#ifndef MODULE
/******************************************************************************
* ip2_setup:
* str: kernel command line string
@ -531,7 +536,6 @@ static int __init ip2_setup(char *str)
return 1;
}
__setup("ip2=", ip2_setup);
#endif /* !MODULE */
static int __init ip2_loadmain(void)
{
@ -539,14 +543,20 @@ static int __init ip2_loadmain(void)
int err = 0;
i2eBordStrPtr pB = NULL;
int rc = -1;
struct pci_dev *pdev = NULL;
const struct firmware *fw = NULL;
char *str;
str = cmd;
if (poll_only) {
/* Hard lock the interrupts to zero */
irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0;
}
/* Check module parameter with 'ip2=' has been passed or not */
if (!poll_only && (!strncmp(str, "ip2=", 4)))
ip2_setup(str);
ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0);
/* process command line arguments to modprobe or
@ -612,6 +622,7 @@ static int __init ip2_loadmain(void)
case PCI:
#ifdef CONFIG_PCI
{
struct pci_dev *pdev = NULL;
u32 addr;
int status;
@ -626,7 +637,7 @@ static int __init ip2_loadmain(void)
if (pci_enable_device(pdev)) {
dev_err(&pdev->dev, "can't enable device\n");
break;
goto out;
}
ip2config.type[i] = PCI;
ip2config.pci_dev[i] = pci_dev_get(pdev);
@ -638,6 +649,8 @@ static int __init ip2_loadmain(void)
dev_err(&pdev->dev, "I/O address error\n");
ip2config.irq[i] = pdev->irq;
out:
pci_dev_put(pdev);
}
#else
printk(KERN_ERR "IP2: PCI card specified but PCI "
@ -656,7 +669,6 @@ static int __init ip2_loadmain(void)
break;
} /* switch */
} /* for */
pci_dev_put(pdev);
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
if (ip2config.addr[i]) {
@ -3197,3 +3209,5 @@ static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
};
MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl);
MODULE_FIRMWARE("intelliport2.bin");

71
drivers/char/ipmi/ipmi_si_intf.c
View file

@ -295,6 +295,9 @@ struct smi_info {
static int force_kipmid[SI_MAX_PARMS];
static int num_force_kipmid;
static unsigned int kipmid_max_busy_us[SI_MAX_PARMS];
static int num_max_busy_us;
static int unload_when_empty = 1;
static int try_smi_init(struct smi_info *smi);
@ -925,23 +928,77 @@ static void set_run_to_completion(void *send_info, int i_run_to_completion)
}
}
/*
* Use -1 in the nsec value of the busy waiting timespec to tell that
* we are spinning in kipmid looking for something and not delaying
* between checks
*/
static inline void ipmi_si_set_not_busy(struct timespec *ts)
{
ts->tv_nsec = -1;
}
static inline int ipmi_si_is_busy(struct timespec *ts)
{
return ts->tv_nsec != -1;
}
static int ipmi_thread_busy_wait(enum si_sm_result smi_result,
const struct smi_info *smi_info,
struct timespec *busy_until)
{
unsigned int max_busy_us = 0;
if (smi_info->intf_num < num_max_busy_us)
max_busy_us = kipmid_max_busy_us[smi_info->intf_num];
if (max_busy_us == 0 || smi_result != SI_SM_CALL_WITH_DELAY)
ipmi_si_set_not_busy(busy_until);
else if (!ipmi_si_is_busy(busy_until)) {
getnstimeofday(busy_until);
timespec_add_ns(busy_until, max_busy_us*NSEC_PER_USEC);
} else {
struct timespec now;
getnstimeofday(&now);
if (unlikely(timespec_compare(&now, busy_until) > 0)) {
ipmi_si_set_not_busy(busy_until);
return 0;
}
}
return 1;
}
/*
* A busy-waiting loop for speeding up IPMI operation.
*
* Lousy hardware makes this hard. This is only enabled for systems
* that are not BT and do not have interrupts. It starts spinning
* when an operation is complete or until max_busy tells it to stop
* (if that is enabled). See the paragraph on kimid_max_busy_us in
* Documentation/IPMI.txt for details.
*/
static int ipmi_thread(void *data)
{
struct smi_info *smi_info = data;
unsigned long flags;
enum si_sm_result smi_result;
struct timespec busy_until;
ipmi_si_set_not_busy(&busy_until);
set_user_nice(current, 19);
while (!kthread_should_stop()) {
int busy_wait;
spin_lock_irqsave(&(smi_info->si_lock), flags);
smi_result = smi_event_handler(smi_info, 0);
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
busy_wait = ipmi_thread_busy_wait(smi_result, smi_info,
&busy_until);
if (smi_result == SI_SM_CALL_WITHOUT_DELAY)
; /* do nothing */
else if (smi_result == SI_SM_CALL_WITH_DELAY)
else if (smi_result == SI_SM_CALL_WITH_DELAY && busy_wait)
schedule();
else
schedule_timeout_interruptible(1);
schedule_timeout_interruptible(0);
}
return 0;
}
@ -1144,7 +1201,7 @@ static int regsizes[SI_MAX_PARMS];
static unsigned int num_regsizes;
static int regshifts[SI_MAX_PARMS];
static unsigned int num_regshifts;
static int slave_addrs[SI_MAX_PARMS];
static int slave_addrs[SI_MAX_PARMS]; /* Leaving 0 chooses the default value */
static unsigned int num_slave_addrs;
#define IPMI_IO_ADDR_SPACE 0
@ -1212,6 +1269,11 @@ module_param(unload_when_empty, int, 0);
MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are"
" specified or found, default is 1. Setting to 0"
" is useful for hot add of devices using hotmod.");
module_param_array(kipmid_max_busy_us, uint, &num_max_busy_us, 0644);
MODULE_PARM_DESC(kipmid_max_busy_us,
"Max time (in microseconds) to busy-wait for IPMI data before"
" sleeping. 0 (default) means to wait forever. Set to 100-500"
" if kipmid is using up a lot of CPU time.");
static void std_irq_cleanup(struct smi_info *info)
@ -1607,7 +1669,7 @@ static int hotmod_handler(const char *val, struct kernel_param *kp)
regsize = 1;
regshift = 0;
irq = 0;
ipmb = 0x20;
ipmb = 0; /* Choose the default if not specified */
next = strchr(curr, ':');
if (next) {
@ -1799,6 +1861,7 @@ static __devinit void hardcode_find_bmc(void)
info->irq = irqs[i];
if (info->irq)
info->irq_setup = std_irq_setup;
info->slave_addr = slave_addrs[i];
try_smi_init(info);
}

54
drivers/char/isicom.c
View file

@ -113,6 +113,8 @@
* 64-bit verification
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/kernel.h>
@ -140,7 +142,6 @@
#define InterruptTheCard(base) outw(0, (base) + 0xc)
#define ClearInterrupt(base) inw((base) + 0x0a)
#define pr_dbg(str...) pr_debug("ISICOM: " str)
#ifdef DEBUG
#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
#else
@ -249,8 +250,7 @@ static int lock_card(struct isi_board *card)
spin_unlock_irqrestore(&card->card_lock, card->flags);
msleep(10);
}
printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n",
card->base);
pr_warning("Failed to lock Card (0x%lx)\n", card->base);
return 0; /* Failed to acquire the card! */
}
@ -379,13 +379,13 @@ static inline int __isicom_paranoia_check(struct isi_port const *port,
char *name, const char *routine)
{
if (!port) {
printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for "
"dev %s in %s.\n", name, routine);
pr_warning("Warning: bad isicom magic for dev %s in %s.\n",
name, routine);
return 1;
}
if (port->magic != ISICOM_MAGIC) {
printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for "
"dev %s in %s.\n", name, routine);
pr_warning("Warning: NULL isicom port for dev %s in %s.\n",
name, routine);
return 1;
}
@ -450,8 +450,8 @@ static void isicom_tx(unsigned long _data)
if (!(inw(base + 0x02) & (1 << port->channel)))
continue;
pr_dbg("txing %d bytes, port%d.\n", txcount,
port->channel + 1);
pr_debug("txing %d bytes, port%d.\n",
txcount, port->channel + 1);
outw((port->channel << isi_card[card].shift_count) | txcount,
base);
residue = NO;
@ -547,8 +547,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
byte_count = header & 0xff;
if (channel + 1 > card->port_count) {
printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): "
"%d(channel) > port_count.\n", base, channel+1);
pr_warning("%s(0x%lx): %d(channel) > port_count.\n",
__func__, base, channel+1);
outw(0x0000, base+0x04); /* enable interrupts */
spin_unlock(&card->card_lock);
return IRQ_HANDLED;
@ -582,14 +582,15 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
if (port->status & ISI_DCD) {
if (!(header & ISI_DCD)) {
/* Carrier has been lost */
pr_dbg("interrupt: DCD->low.\n"
);
pr_debug("%s: DCD->low.\n",
__func__);
port->status &= ~ISI_DCD;
tty_hangup(tty);
}
} else if (header & ISI_DCD) {
/* Carrier has been detected */
pr_dbg("interrupt: DCD->high.\n");
pr_debug("%s: DCD->high.\n",
__func__);
port->status |= ISI_DCD;
wake_up_interruptible(&port->port.open_wait);
}
@ -641,17 +642,19 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
break;
case 2: /* Statistics */
pr_dbg("isicom_interrupt: stats!!!.\n");
pr_debug("%s: stats!!!\n", __func__);
break;
default:
pr_dbg("Intr: Unknown code in status packet.\n");
pr_debug("%s: Unknown code in status packet.\n",
__func__);
break;
}
} else { /* Data Packet */
count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count);
pr_debug("%s: Can rx %d of %d bytes.\n",
__func__, count, byte_count);
word_count = count >> 1;
insw(base, rp, word_count);
byte_count -= (word_count << 1);
@ -661,8 +664,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
byte_count -= 2;
}
if (byte_count > 0) {
pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping "
"bytes...\n", base, channel + 1);
pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
__func__, base, channel + 1);
/* drain out unread xtra data */
while (byte_count > 0) {
inw(base);
@ -888,8 +891,8 @@ static void isicom_shutdown_port(struct isi_port *port)
struct isi_board *card = port->card;
if (--card->count < 0) {
pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n",
card->base, card->count);
pr_debug("%s: bad board(0x%lx) count %d.\n",
__func__, card->base, card->count);
card->count = 0;
}
/* last port was closed, shutdown that board too */
@ -1681,13 +1684,13 @@ static int __init isicom_init(void)
retval = tty_register_driver(isicom_normal);
if (retval) {
pr_dbg("Couldn't register the dialin driver\n");
pr_debug("Couldn't register the dialin driver\n");
goto err_puttty;
}
retval = pci_register_driver(&isicom_driver);
if (retval < 0) {
printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
pr_err("Unable to register pci driver.\n");
goto err_unrtty;
}
@ -1717,3 +1720,8 @@ module_exit(isicom_exit);
MODULE_AUTHOR("MultiTech");
MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("isi608.bin");
MODULE_FIRMWARE("isi608em.bin");
MODULE_FIRMWARE("isi616em.bin");
MODULE_FIRMWARE("isi4608.bin");
MODULE_FIRMWARE("isi4616.bin");

195
drivers/char/mem.c
View file

@ -3,7 +3,7 @@
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* Added devfs support.
* Added devfs support.
* Jan-11-1998, C. Scott Ananian <cananian@alumni.princeton.edu>
* Shared /dev/zero mmapping support, Feb 2000, Kanoj Sarcar <kanoj@sgi.com>
*/
@ -44,36 +44,6 @@ static inline unsigned long size_inside_page(unsigned long start,
return min(sz, size);
}
/*
* Architectures vary in how they handle caching for addresses
* outside of main memory.
*
*/
static inline int uncached_access(struct file *file, unsigned long addr)
{
#if defined(CONFIG_IA64)
/*
* On ia64, we ignore O_DSYNC because we cannot tolerate memory attribute aliases.
*/
return !(efi_mem_attributes(addr) & EFI_MEMORY_WB);
#elif defined(CONFIG_MIPS)
{
extern int __uncached_access(struct file *file,
unsigned long addr);
return __uncached_access(file, addr);
}
#else
/*
* Accessing memory above the top the kernel knows about or through a file pointer
* that was marked O_DSYNC will be done non-cached.
*/
if (file->f_flags & O_DSYNC)
return 1;
return addr >= __pa(high_memory);
#endif
}
#ifndef ARCH_HAS_VALID_PHYS_ADDR_RANGE
static inline int valid_phys_addr_range(unsigned long addr, size_t count)
{
@ -115,15 +85,15 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
}
#endif
void __attribute__((weak)) unxlate_dev_mem_ptr(unsigned long phys, void *addr)
void __weak unxlate_dev_mem_ptr(unsigned long phys, void *addr)
{
}
/*
* This funcion reads the *physical* memory. The f_pos points directly to the
* memory location.
* This funcion reads the *physical* memory. The f_pos points directly to the
* memory location.
*/
static ssize_t read_mem(struct file * file, char __user * buf,
static ssize_t read_mem(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
unsigned long p = *ppos;
@ -140,10 +110,10 @@ static ssize_t read_mem(struct file * file, char __user * buf,
if (sz > 0) {
if (clear_user(buf, sz))
return -EFAULT;
buf += sz;
p += sz;
count -= sz;
read += sz;
buf += sz;
p += sz;
count -= sz;
read += sz;
}
}
#endif
@ -157,9 +127,9 @@ static ssize_t read_mem(struct file * file, char __user * buf,
return -EPERM;
/*
* On ia64 if a page has been mapped somewhere as
* uncached, then it must also be accessed uncached
* by the kernel or data corruption may occur
* On ia64 if a page has been mapped somewhere as uncached, then
* it must also be accessed uncached by the kernel or data
* corruption may occur.
*/
ptr = xlate_dev_mem_ptr(p);
if (!ptr)
@ -180,7 +150,7 @@ static ssize_t read_mem(struct file * file, char __user * buf,
return read;
}
static ssize_t write_mem(struct file * file, const char __user * buf,
static ssize_t write_mem(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
unsigned long p = *ppos;
@ -212,9 +182,9 @@ static ssize_t write_mem(struct file * file, const char __user * buf,
return -EPERM;
/*
* On ia64 if a page has been mapped somewhere as
* uncached, then it must also be accessed uncached
* by the kernel or data corruption may occur
* On ia64 if a page has been mapped somewhere as uncached, then
* it must also be accessed uncached by the kernel or data
* corruption may occur.
*/
ptr = xlate_dev_mem_ptr(p);
if (!ptr) {
@ -242,13 +212,46 @@ static ssize_t write_mem(struct file * file, const char __user * buf,
return written;
}
int __attribute__((weak)) phys_mem_access_prot_allowed(struct file *file,
int __weak phys_mem_access_prot_allowed(struct file *file,
unsigned long pfn, unsigned long size, pgprot_t *vma_prot)
{
return 1;
}
#ifndef __HAVE_PHYS_MEM_ACCESS_PROT
/*
* Architectures vary in how they handle caching for addresses
* outside of main memory.
*
*/
static int uncached_access(struct file *file, unsigned long addr)
{
#if defined(CONFIG_IA64)
/*
* On ia64, we ignore O_DSYNC because we cannot tolerate memory
* attribute aliases.
*/
return !(efi_mem_attributes(addr) & EFI_MEMORY_WB);
#elif defined(CONFIG_MIPS)
{
extern int __uncached_access(struct file *file,
unsigned long addr);
return __uncached_access(file, addr);
}
#else
/*
* Accessing memory above the top the kernel knows about or through a
* file pointer
* that was marked O_DSYNC will be done non-cached.
*/
if (file->f_flags & O_DSYNC)
return 1;
return addr >= __pa(high_memory);
#endif
}
static pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot)
{
@ -294,7 +297,7 @@ static const struct vm_operations_struct mmap_mem_ops = {
#endif
};
static int mmap_mem(struct file * file, struct vm_area_struct * vma)
static int mmap_mem(struct file *file, struct vm_area_struct *vma)
{
size_t size = vma->vm_end - vma->vm_start;
@ -329,7 +332,7 @@ static int mmap_mem(struct file * file, struct vm_area_struct * vma)
}
#ifdef CONFIG_DEVKMEM
static int mmap_kmem(struct file * file, struct vm_area_struct * vma)
static int mmap_kmem(struct file *file, struct vm_area_struct *vma)
{
unsigned long pfn;
@ -337,9 +340,9 @@ static int mmap_kmem(struct file * file, struct vm_area_struct * vma)
pfn = __pa((u64)vma->vm_pgoff << PAGE_SHIFT) >> PAGE_SHIFT;
/*
* RED-PEN: on some architectures there is more mapped memory
* than available in mem_map which pfn_valid checks
* for. Perhaps should add a new macro here.
* RED-PEN: on some architectures there is more mapped memory than
* available in mem_map which pfn_valid checks for. Perhaps should add a
* new macro here.
*
* RED-PEN: vmalloc is not supported right now.
*/
@ -389,7 +392,7 @@ static ssize_t read_oldmem(struct file *file, char __user *buf,
/*
* This function reads the *virtual* memory as seen by the kernel.
*/
static ssize_t read_kmem(struct file *file, char __user *buf,
static ssize_t read_kmem(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
unsigned long p = *ppos;
@ -400,8 +403,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
read = 0;
if (p < (unsigned long) high_memory) {
low_count = count;
if (count > (unsigned long) high_memory - p)
low_count = (unsigned long) high_memory - p;
if (count > (unsigned long)high_memory - p)
low_count = (unsigned long)high_memory - p;
#ifdef __ARCH_HAS_NO_PAGE_ZERO_MAPPED
/* we don't have page 0 mapped on sparc and m68k.. */
@ -465,9 +468,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
}
static inline ssize_t
do_write_kmem(unsigned long p, const char __user *buf,
size_t count, loff_t *ppos)
static ssize_t do_write_kmem(unsigned long p, const char __user *buf,
size_t count, loff_t *ppos)
{
ssize_t written, sz;
unsigned long copied;
@ -491,9 +493,9 @@ do_write_kmem(unsigned long p, const char __user *buf,
sz = size_inside_page(p, count);
/*
* On ia64 if a page has been mapped somewhere as
* uncached, then it must also be accessed uncached
* by the kernel or data corruption may occur
* On ia64 if a page has been mapped somewhere as uncached, then
* it must also be accessed uncached by the kernel or data
* corruption may occur.
*/
ptr = xlate_dev_kmem_ptr((char *)p);
@ -514,11 +516,10 @@ do_write_kmem(unsigned long p, const char __user *buf,
return written;
}
/*
* This function writes to the *virtual* memory as seen by the kernel.
*/
static ssize_t write_kmem(struct file * file, const char __user * buf,
static ssize_t write_kmem(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
unsigned long p = *ppos;
@ -570,17 +571,17 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
#endif
#ifdef CONFIG_DEVPORT
static ssize_t read_port(struct file * file, char __user * buf,
static ssize_t read_port(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
unsigned long i = *ppos;
char __user *tmp = buf;
if (!access_ok(VERIFY_WRITE, buf, count))
return -EFAULT;
return -EFAULT;
while (count-- > 0 && i < 65536) {
if (__put_user(inb(i),tmp) < 0)
return -EFAULT;
if (__put_user(inb(i), tmp) < 0)
return -EFAULT;
i++;
tmp++;
}
@ -588,22 +589,22 @@ static ssize_t read_port(struct file * file, char __user * buf,
return tmp-buf;
}
static ssize_t write_port(struct file * file, const char __user * buf,
static ssize_t write_port(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
unsigned long i = *ppos;
const char __user * tmp = buf;
if (!access_ok(VERIFY_READ,buf,count))
if (!access_ok(VERIFY_READ, buf, count))
return -EFAULT;
while (count-- > 0 && i < 65536) {
char c;
if (__get_user(c, tmp)) {
if (tmp > buf)
break;
return -EFAULT;
return -EFAULT;
}
outb(c,i);
outb(c, i);
i++;
tmp++;
}
@ -612,13 +613,13 @@ static ssize_t write_port(struct file * file, const char __user * buf,
}
#endif
static ssize_t read_null(struct file * file, char __user * buf,
static ssize_t read_null(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
return 0;
}
static ssize_t write_null(struct file * file, const char __user * buf,
static ssize_t write_null(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
return count;
@ -630,13 +631,13 @@ static int pipe_to_null(struct pipe_inode_info *info, struct pipe_buffer *buf,
return sd->len;
}
static ssize_t splice_write_null(struct pipe_inode_info *pipe,struct file *out,
static ssize_t splice_write_null(struct pipe_inode_info *pipe, struct file *out,
loff_t *ppos, size_t len, unsigned int flags)
{
return splice_from_pipe(pipe, out, ppos, len, flags, pipe_to_null);
}
static ssize_t read_zero(struct file * file, char __user * buf,
static ssize_t read_zero(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
size_t written;
@ -667,7 +668,7 @@ static ssize_t read_zero(struct file * file, char __user * buf,
return written ? written : -EFAULT;
}
static int mmap_zero(struct file * file, struct vm_area_struct * vma)
static int mmap_zero(struct file *file, struct vm_area_struct *vma)
{
#ifndef CONFIG_MMU
return -ENOSYS;
@ -677,7 +678,7 @@ static int mmap_zero(struct file * file, struct vm_area_struct * vma)
return 0;
}
static ssize_t write_full(struct file * file, const char __user * buf,
static ssize_t write_full(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
return -ENOSPC;
@ -688,8 +689,7 @@ static ssize_t write_full(struct file * file, const char __user * buf,
* can fopen() both devices with "a" now. This was previously impossible.
* -- SRB.
*/
static loff_t null_lseek(struct file * file, loff_t offset, int orig)
static loff_t null_lseek(struct file *file, loff_t offset, int orig)
{
return file->f_pos = 0;
}
@ -702,24 +702,31 @@ static loff_t null_lseek(struct file * file, loff_t offset, int orig)
* also note that seeking relative to the "end of file" isn't supported:
* it has no meaning, so it returns -EINVAL.
*/
static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
static loff_t memory_lseek(struct file *file, loff_t offset, int orig)
{
loff_t ret;
mutex_lock(&file->f_path.dentry->d_inode->i_mutex);
switch (orig) {
case 0:
file->f_pos = offset;
ret = file->f_pos;
force_successful_syscall_return();
case SEEK_CUR:
offset += file->f_pos;
if ((unsigned long long)offset <
(unsigned long long)file->f_pos) {
ret = -EOVERFLOW;
break;
case 1:
file->f_pos += offset;
ret = file->f_pos;
force_successful_syscall_return();
}
case SEEK_SET:
/* to avoid userland mistaking f_pos=-9 as -EBADF=-9 */
if ((unsigned long long)offset >= ~0xFFFULL) {
ret = -EOVERFLOW;
break;
default:
ret = -EINVAL;
}
file->f_pos = offset;
ret = file->f_pos;
force_successful_syscall_return();
break;
default:
ret = -EINVAL;
}
mutex_unlock(&file->f_path.dentry->d_inode->i_mutex);
return ret;
@ -803,7 +810,7 @@ static const struct file_operations oldmem_fops = {
};
#endif
static ssize_t kmsg_write(struct file * file, const char __user * buf,
static ssize_t kmsg_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
char *tmp;
@ -825,7 +832,7 @@ static ssize_t kmsg_write(struct file * file, const char __user * buf,
}
static const struct file_operations kmsg_fops = {
.write = kmsg_write,
.write = kmsg_write,
};
static const struct memdev {
@ -876,7 +883,7 @@ static int memory_open(struct inode *inode, struct file *filp)
}
static const struct file_operations memory_fops = {
.open = memory_open,
.open = memory_open,
};
static char *mem_devnode(struct device *dev, mode_t *mode)
@ -897,7 +904,7 @@ static int __init chr_dev_init(void)
if (err)
return err;
if (register_chrdev(MEM_MAJOR,"mem",&memory_fops))
if (register_chrdev(MEM_MAJOR, "mem", &memory_fops))
printk("unable to get major %d for memory devs\n", MEM_MAJOR);
mem_class = class_create(THIS_MODULE, "mem");

2
drivers/char/mmtimer.c
View file

@ -546,7 +546,7 @@ static void mmtimer_tasklet(unsigned long data)
{
int nodeid = data;
struct mmtimer_node *mn = &timers[nodeid];
struct mmtimer *x = rb_entry(mn->next, struct mmtimer, list);
struct mmtimer *x;
struct k_itimer *t;
unsigned long flags;

20
drivers/char/moxa.c
View file

@ -164,24 +164,25 @@ static unsigned int moxaFuncTout = HZ / 2;
static unsigned int moxaLowWaterChk;
static DEFINE_MUTEX(moxa_openlock);
static DEFINE_SPINLOCK(moxa_lock);
/* Variables for insmod */
#ifdef MODULE
static unsigned long baseaddr[MAX_BOARDS];
static unsigned int type[MAX_BOARDS];
static unsigned int numports[MAX_BOARDS];
#endif
MODULE_AUTHOR("William Chen");
MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
MODULE_LICENSE("GPL");
#ifdef MODULE
MODULE_FIRMWARE("c218tunx.cod");
MODULE_FIRMWARE("cp204unx.cod");
MODULE_FIRMWARE("c320tunx.cod");
module_param_array(type, uint, NULL, 0);
MODULE_PARM_DESC(type, "card type: C218=2, C320=4");
module_param_array(baseaddr, ulong, NULL, 0);
MODULE_PARM_DESC(baseaddr, "base address");
module_param_array(numports, uint, NULL, 0);
MODULE_PARM_DESC(numports, "numports (ignored for C218)");
#endif
module_param(ttymajor, int, 0);
/*
@ -1024,6 +1025,8 @@ static int __init moxa_init(void)
{
unsigned int isabrds = 0;
int retval = 0;
struct moxa_board_conf *brd = moxa_boards;
unsigned int i;
printk(KERN_INFO "MOXA Intellio family driver version %s\n",
MOXA_VERSION);
@ -1051,10 +1054,7 @@ static int __init moxa_init(void)
}
/* Find the boards defined from module args. */
#ifdef MODULE
{
struct moxa_board_conf *brd = moxa_boards;
unsigned int i;
for (i = 0; i < MAX_BOARDS; i++) {
if (!baseaddr[i])
break;
@ -1087,8 +1087,6 @@ static int __init moxa_init(void)
isabrds++;
}
}
}
#endif
#ifdef CONFIG_PCI
retval = pci_register_driver(&moxa_pci_driver);

3
drivers/char/mxser.c
View file

@ -895,8 +895,7 @@ static int mxser_activate(struct tty_port *port, struct tty_struct *tty)
if (inb(info->ioaddr + UART_LSR) == 0xff) {
spin_unlock_irqrestore(&info->slock, flags);
if (capable(CAP_SYS_ADMIN)) {
if (tty)
set_bit(TTY_IO_ERROR, &tty->flags);
set_bit(TTY_IO_ERROR, &tty->flags);
return 0;
} else
return -ENODEV;

17
drivers/char/n_tty.c
View file

@ -48,6 +48,7 @@
#include <linux/audit.h>
#include <linux/file.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <asm/system.h>
@ -2091,3 +2092,19 @@ struct tty_ldisc_ops tty_ldisc_N_TTY = {
.receive_buf = n_tty_receive_buf,
.write_wakeup = n_tty_write_wakeup
};
/**
* n_tty_inherit_ops - inherit N_TTY methods
* @ops: struct tty_ldisc_ops where to save N_TTY methods
*
* Used by a generic struct tty_ldisc_ops to easily inherit N_TTY
* methods.
*/
void n_tty_inherit_ops(struct tty_ldisc_ops *ops)
{
*ops = tty_ldisc_N_TTY;
ops->owner = NULL;
ops->refcount = ops->flags = 0;
}
EXPORT_SYMBOL_GPL(n_tty_inherit_ops);

163
drivers/char/nozomi.c
View file

@ -136,10 +136,6 @@ static int debug;
#define RECEIVE_BUF_MAX 4
/* Define all types of vendors and devices to support */
#define VENDOR1 0x1931 /* Vendor Option */
#define DEVICE1 0x000c /* HSDPA card */
#define R_IIR 0x0000 /* Interrupt Identity Register */
#define R_FCR 0x0000 /* Flow Control Register */
#define R_IER 0x0004 /* Interrupt Enable Register */
@ -371,6 +367,8 @@ struct port {
struct mutex tty_sem;
wait_queue_head_t tty_wait;
struct async_icount tty_icount;
struct nozomi *dc;
};
/* Private data one for each card in the system */
@ -405,7 +403,7 @@ struct buffer {
/* Global variables */
static const struct pci_device_id nozomi_pci_tbl[] __devinitconst = {
{PCI_DEVICE(VENDOR1, DEVICE1)},
{PCI_DEVICE(0x1931, 0x000c)}, /* Nozomi HSDPA */
{},
};
@ -414,6 +412,8 @@ MODULE_DEVICE_TABLE(pci, nozomi_pci_tbl);
static struct nozomi *ndevs[NOZOMI_MAX_CARDS];
static struct tty_driver *ntty_driver;
static const struct tty_port_operations noz_tty_port_ops;
/*
* find card by tty_index
*/
@ -853,8 +853,6 @@ static int receive_data(enum port_type index, struct nozomi *dc)
goto put;
}
tty_buffer_request_room(tty, size);
while (size > 0) {
read_mem32((u32 *) buf, addr + offset, RECEIVE_BUF_MAX);
@ -1473,9 +1471,11 @@ static int __devinit nozomi_card_init(struct pci_dev *pdev,
for (i = 0; i < MAX_PORT; i++) {
struct device *tty_dev;
mutex_init(&dc->port[i].tty_sem);
tty_port_init(&dc->port[i].port);
struct port *port = &dc->port[i];
port->dc = dc;
mutex_init(&port->tty_sem);
tty_port_init(&port->port);
port->port.ops = &noz_tty_port_ops;
tty_dev = tty_register_device(ntty_driver, dc->index_start + i,
&pdev->dev);
@ -1600,67 +1600,74 @@ static void set_dtr(const struct tty_struct *tty, int dtr)
* ----------------------------------------------------------------------------
*/
/* Called when the userspace process opens the tty, /dev/noz*. */
static int ntty_open(struct tty_struct *tty, struct file *file)
static int ntty_install(struct tty_driver *driver, struct tty_struct *tty)
{
struct port *port = get_port_by_tty(tty);
struct nozomi *dc = get_dc_by_tty(tty);
unsigned long flags;
int ret;
if (!port || !dc || dc->state != NOZOMI_STATE_READY)
return -ENODEV;
if (mutex_lock_interruptible(&port->tty_sem))
return -ERESTARTSYS;
port->port.count++;
dc->open_ttys++;
/* Enable interrupt downlink for channel */
if (port->port.count == 1) {
tty->driver_data = port;
tty_port_tty_set(&port->port, tty);
DBG1("open: %d", port->token_dl);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier = dc->last_ier | port->token_dl;
writew(dc->last_ier, dc->reg_ier);
spin_unlock_irqrestore(&dc->spin_mutex, flags);
ret = tty_init_termios(tty);
if (ret == 0) {
tty_driver_kref_get(driver);
driver->ttys[tty->index] = tty;
}
mutex_unlock(&port->tty_sem);
return ret;
}
static void ntty_cleanup(struct tty_struct *tty)
{
tty->driver_data = NULL;
}
static int ntty_activate(struct tty_port *tport, struct tty_struct *tty)
{
struct port *port = container_of(tport, struct port, port);
struct nozomi *dc = port->dc;
unsigned long flags;
DBG1("open: %d", port->token_dl);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier = dc->last_ier | port->token_dl;
writew(dc->last_ier, dc->reg_ier);
dc->open_ttys++;
spin_unlock_irqrestore(&dc->spin_mutex, flags);
printk("noz: activated %d: %p\n", tty->index, tport);
return 0;
}
/* Called when the userspace process close the tty, /dev/noz*. Also
called immediately if ntty_open fails in which case tty->driver_data
will be NULL an we exit by the first return */
static void ntty_close(struct tty_struct *tty, struct file *file)
static int ntty_open(struct tty_struct *tty, struct file *filp)
{
struct nozomi *dc = get_dc_by_tty(tty);
struct port *nport = tty->driver_data;
struct tty_port *port = &nport->port;
struct port *port = get_port_by_tty(tty);
return tty_port_open(&port->port, tty, filp);
}
static void ntty_shutdown(struct tty_port *tport)
{
struct port *port = container_of(tport, struct port, port);
struct nozomi *dc = port->dc;
unsigned long flags;
if (!dc || !nport)
return;
/* Users cannot interrupt a close */
mutex_lock(&nport->tty_sem);
WARN_ON(!port->count);
DBG1("close: %d", port->token_dl);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier &= ~(port->token_dl);
writew(dc->last_ier, dc->reg_ier);
dc->open_ttys--;
port->count--;
spin_unlock_irqrestore(&dc->spin_mutex, flags);
printk("noz: shutdown %p\n", tport);
}
if (port->count == 0) {
DBG1("close: %d", nport->token_dl);
tty_port_tty_set(port, NULL);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier &= ~(nport->token_dl);
writew(dc->last_ier, dc->reg_ier);
spin_unlock_irqrestore(&dc->spin_mutex, flags);
}
mutex_unlock(&nport->tty_sem);
static void ntty_close(struct tty_struct *tty, struct file *filp)
{
struct port *port = tty->driver_data;
if (port)
tty_port_close(&port->port, tty, filp);
}
static void ntty_hangup(struct tty_struct *tty)
{
struct port *port = tty->driver_data;
tty_port_hangup(&port->port);
}
/*
@ -1680,15 +1687,7 @@ static int ntty_write(struct tty_struct *tty, const unsigned char *buffer,
if (!dc || !port)
return -ENODEV;
if (unlikely(!mutex_trylock(&port->tty_sem))) {
/*
* must test lock as tty layer wraps calls
* to this function with BKL
*/
dev_err(&dc->pdev->dev, "Would have deadlocked - "
"return EAGAIN\n");
return -EAGAIN;
}
mutex_lock(&port->tty_sem);
if (unlikely(!port->port.count)) {
DBG1(" ");
@ -1728,25 +1727,23 @@ exit:
* This method is called by the upper tty layer.
* #according to sources N_TTY.c it expects a value >= 0 and
* does not check for negative values.
*
* If the port is unplugged report lots of room and let the bits
* dribble away so we don't block anything.
*/
static int ntty_write_room(struct tty_struct *tty)
{
struct port *port = tty->driver_data;
int room = 0;
int room = 4096;
const struct nozomi *dc = get_dc_by_tty(tty);
if (!dc || !port)
return 0;
if (!mutex_trylock(&port->tty_sem))
return 0;
if (!port->port.count)
goto exit;
room = port->fifo_ul.size - kfifo_len(&port->fifo_ul);
exit:
mutex_unlock(&port->tty_sem);
if (dc) {
mutex_lock(&port->tty_sem);
if (port->port.count)
room = port->fifo_ul.size -
kfifo_len(&port->fifo_ul);
mutex_unlock(&port->tty_sem);
}
return room;
}
@ -1906,10 +1903,16 @@ exit_in_buffer:
return rval;
}
static const struct tty_port_operations noz_tty_port_ops = {
.activate = ntty_activate,
.shutdown = ntty_shutdown,
};
static const struct tty_operations tty_ops = {
.ioctl = ntty_ioctl,
.open = ntty_open,
.close = ntty_close,
.hangup = ntty_hangup,
.write = ntty_write,
.write_room = ntty_write_room,
.unthrottle = ntty_unthrottle,
@ -1917,6 +1920,8 @@ static const struct tty_operations tty_ops = {
.chars_in_buffer = ntty_chars_in_buffer,
.tiocmget = ntty_tiocmget,
.tiocmset = ntty_tiocmset,
.install = ntty_install,
.cleanup = ntty_cleanup,
};
/* Module initialization */

2
drivers/char/pty.c
View file

@ -220,7 +220,7 @@ static void pty_set_termios(struct tty_struct *tty,
* @tty: tty being resized
* @ws: window size being set.
*
* Update the termios variables and send the neccessary signals to
* Update the termios variables and send the necessary signals to
* peform a terminal resize correctly
*/

2
drivers/char/random.c
View file

@ -1191,7 +1191,7 @@ const struct file_operations urandom_fops = {
void generate_random_uuid(unsigned char uuid_out[16])
{
get_random_bytes(uuid_out, 16);
/* Set UUID version to 4 --- truely random generation */
/* Set UUID version to 4 --- truly random generation */
uuid_out[6] = (uuid_out[6] & 0x0F) | 0x40;
/* Set the UUID variant to DCE */
uuid_out[8] = (uuid_out[8] & 0x3F) | 0x80;

5
drivers/char/serial167.c
View file

@ -658,8 +658,7 @@ static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id)
info->mon.char_max = char_count;
info->mon.char_last = char_count;
#endif
len = tty_buffer_request_room(tty, char_count);
while (len--) {
while (char_count--) {
data = base_addr[CyRDR];
tty_insert_flip_char(tty, data, TTY_NORMAL);
#ifdef CYCLOM_16Y_HACK
@ -1990,7 +1989,7 @@ void mvme167_serial_console_setup(int cflag)
/*
* Attempt to set up all channels to something reasonable, and
* bang out a INIT_CHAN command. We should then be able to limit
* the ammount of fiddling we have to do in normal running.
* the amount of fiddling we have to do in normal running.
*/
for (ch = 3; ch >= 0; ch--) {

2
drivers/char/specialix.c
View file

@ -646,8 +646,6 @@ static void sx_receive(struct specialix_board *bp)
dprintk(SX_DEBUG_RX, "port: %p: count: %d\n", port, count);
port->hits[count > 8 ? 9 : count]++;
tty_buffer_request_room(tty, count);
while (count--)
tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL);
tty_flip_buffer_push(tty);

4
drivers/char/synclink.c
View file

@ -2031,7 +2031,7 @@ static int mgsl_put_char(struct tty_struct *tty, unsigned char ch)
if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char"))
return 0;
if (!tty || !info->xmit_buf)
if (!info->xmit_buf)
return 0;
spin_lock_irqsave(&info->irq_spinlock, flags);
@ -2121,7 +2121,7 @@ static int mgsl_write(struct tty_struct * tty,
if (mgsl_paranoia_check(info, tty->name, "mgsl_write"))
goto cleanup;
if (!tty || !info->xmit_buf)
if (!info->xmit_buf)
goto cleanup;
if ( info->params.mode == MGSL_MODE_HDLC ||

186
drivers/char/synclink_gt.c
View file

@ -468,7 +468,7 @@ static unsigned int free_tbuf_count(struct slgt_info *info);
static unsigned int tbuf_bytes(struct slgt_info *info);
static void reset_tbufs(struct slgt_info *info);
static void tdma_reset(struct slgt_info *info);
static void tx_load(struct slgt_info *info, const char *buf, unsigned int count);
static bool tx_load(struct slgt_info *info, const char *buf, unsigned int count);
static void get_signals(struct slgt_info *info);
static void set_signals(struct slgt_info *info);
@ -813,59 +813,32 @@ static int write(struct tty_struct *tty,
int ret = 0;
struct slgt_info *info = tty->driver_data;
unsigned long flags;
unsigned int bufs_needed;
if (sanity_check(info, tty->name, "write"))
goto cleanup;
return -EIO;
DBGINFO(("%s write count=%d\n", info->device_name, count));
if (!info->tx_buf)
goto cleanup;
if (!info->tx_buf || (count > info->max_frame_size))
return -EIO;
if (count > info->max_frame_size) {
ret = -EIO;
goto cleanup;
}
if (!count || tty->stopped || tty->hw_stopped)
return 0;
if (!count)
goto cleanup;
spin_lock_irqsave(&info->lock, flags);
if (!info->tx_active && info->tx_count) {
if (info->tx_count) {
/* send accumulated data from send_char() */
tx_load(info, info->tx_buf, info->tx_count);
goto start;
if (!tx_load(info, info->tx_buf, info->tx_count))
goto cleanup;
info->tx_count = 0;
}
bufs_needed = (count/DMABUFSIZE);
if (count % DMABUFSIZE)
++bufs_needed;
if (bufs_needed > free_tbuf_count(info))
goto cleanup;
ret = info->tx_count = count;
tx_load(info, buf, count);
goto start;
start:
if (info->tx_count && !tty->stopped && !tty->hw_stopped) {
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active)
tx_start(info);
else if (!(rd_reg32(info, TDCSR) & BIT0)) {
/* transmit still active but transmit DMA stopped */
unsigned int i = info->tbuf_current;
if (!i)
i = info->tbuf_count;
i--;
/* if DMA buf unsent must try later after tx idle */
if (desc_count(info->tbufs[i]))
ret = 0;
}
if (ret > 0)
update_tx_timer(info);
spin_unlock_irqrestore(&info->lock,flags);
}
if (tx_load(info, buf, count))
ret = count;
cleanup:
spin_unlock_irqrestore(&info->lock, flags);
DBGINFO(("%s write rc=%d\n", info->device_name, ret));
return ret;
}
@ -882,7 +855,7 @@ static int put_char(struct tty_struct *tty, unsigned char ch)
if (!info->tx_buf)
return 0;
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active && (info->tx_count < info->max_frame_size)) {
if (info->tx_count < info->max_frame_size) {
info->tx_buf[info->tx_count++] = ch;
ret = 1;
}
@ -981,10 +954,8 @@ static void flush_chars(struct tty_struct *tty)
DBGINFO(("%s flush_chars start transmit\n", info->device_name));
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active && info->tx_count) {
tx_load(info, info->tx_buf,info->tx_count);
tx_start(info);
}
if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count))
info->tx_count = 0;
spin_unlock_irqrestore(&info->lock,flags);
}
@ -997,10 +968,9 @@ static void flush_buffer(struct tty_struct *tty)
return;
DBGINFO(("%s flush_buffer\n", info->device_name));
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active)
info->tx_count = 0;
spin_unlock_irqrestore(&info->lock,flags);
spin_lock_irqsave(&info->lock, flags);
info->tx_count = 0;
spin_unlock_irqrestore(&info->lock, flags);
tty_wakeup(tty);
}
@ -1033,12 +1003,10 @@ static void tx_release(struct tty_struct *tty)
if (sanity_check(info, tty->name, "tx_release"))
return;
DBGINFO(("%s tx_release\n", info->device_name));
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active && info->tx_count) {
tx_load(info, info->tx_buf, info->tx_count);
tx_start(info);
}
spin_unlock_irqrestore(&info->lock,flags);
spin_lock_irqsave(&info->lock, flags);
if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count))
info->tx_count = 0;
spin_unlock_irqrestore(&info->lock, flags);
}
/*
@ -1506,27 +1474,25 @@ static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb,
DBGINFO(("%s hdlc_xmit\n", dev->name));
if (!skb->len)
return NETDEV_TX_OK;
/* stop sending until this frame completes */
netif_stop_queue(dev);
/* copy data to device buffers */
info->tx_count = skb->len;
tx_load(info, skb->data, skb->len);
/* update network statistics */
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
/* done with socket buffer, so free it */
dev_kfree_skb(skb);
/* save start time for transmit timeout detection */
dev->trans_start = jiffies;
spin_lock_irqsave(&info->lock,flags);
tx_start(info);
update_tx_timer(info);
spin_unlock_irqrestore(&info->lock,flags);
spin_lock_irqsave(&info->lock, flags);
tx_load(info, skb->data, skb->len);
spin_unlock_irqrestore(&info->lock, flags);
/* done with socket buffer, so free it */
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
@ -2180,7 +2146,7 @@ static void isr_serial(struct slgt_info *info)
if (info->params.mode == MGSL_MODE_ASYNC) {
if (status & IRQ_TXIDLE) {
if (info->tx_count)
if (info->tx_active)
isr_txeom(info, status);
}
if (info->rx_pio && (status & IRQ_RXDATA))
@ -2276,13 +2242,42 @@ static void isr_tdma(struct slgt_info *info)
}
}
/*
* return true if there are unsent tx DMA buffers, otherwise false
*
* if there are unsent buffers then info->tbuf_start
* is set to index of first unsent buffer
*/
static bool unsent_tbufs(struct slgt_info *info)
{
unsigned int i = info->tbuf_current;
bool rc = false;
/*
* search backwards from last loaded buffer (precedes tbuf_current)
* for first unsent buffer (desc_count > 0)
*/
do {
if (i)
i--;
else
i = info->tbuf_count - 1;
if (!desc_count(info->tbufs[i]))
break;
info->tbuf_start = i;
rc = true;
} while (i != info->tbuf_current);
return rc;
}
static void isr_txeom(struct slgt_info *info, unsigned short status)
{
DBGISR(("%s txeom status=%04x\n", info->device_name, status));
slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER);
tdma_reset(info);
reset_tbufs(info);
if (status & IRQ_TXUNDER) {
unsigned short val = rd_reg16(info, TCR);
wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */
@ -2297,8 +2292,12 @@ static void isr_txeom(struct slgt_info *info, unsigned short status)
info->icount.txok++;
}
if (unsent_tbufs(info)) {
tx_start(info);
update_tx_timer(info);
return;
}
info->tx_active = false;
info->tx_count = 0;
del_timer(&info->tx_timer);
@ -3949,7 +3948,7 @@ static void tx_start(struct slgt_info *info)
info->tx_enabled = true;
}
if (info->tx_count) {
if (desc_count(info->tbufs[info->tbuf_start])) {
info->drop_rts_on_tx_done = false;
if (info->params.mode != MGSL_MODE_ASYNC) {
@ -4772,25 +4771,36 @@ static unsigned int tbuf_bytes(struct slgt_info *info)
}
/*
* load transmit DMA buffer(s) with data
* load data into transmit DMA buffer ring and start transmitter if needed
* return true if data accepted, otherwise false (buffers full)
*/
static void tx_load(struct slgt_info *info, const char *buf, unsigned int size)
static bool tx_load(struct slgt_info *info, const char *buf, unsigned int size)
{
unsigned short count;
unsigned int i;
struct slgt_desc *d;
if (size == 0)
return;
/* check required buffer space */
if (DIV_ROUND_UP(size, DMABUFSIZE) > free_tbuf_count(info))
return false;
DBGDATA(info, buf, size, "tx");
/*
* copy data to one or more DMA buffers in circular ring
* tbuf_start = first buffer for this data
* tbuf_current = next free buffer
*
* Copy all data before making data visible to DMA controller by
* setting descriptor count of the first buffer.
* This prevents an active DMA controller from reading the first DMA
* buffers of a frame and stopping before the final buffers are filled.
*/
info->tbuf_start = i = info->tbuf_current;
while (size) {
d = &info->tbufs[i];
if (++i == info->tbuf_count)
i = 0;
count = (unsigned short)((size > DMABUFSIZE) ? DMABUFSIZE : size);
memcpy(d->buf, buf, count);
@ -4808,11 +4818,27 @@ static void tx_load(struct slgt_info *info, const char *buf, unsigned int size)
else
set_desc_eof(*d, 0);
set_desc_count(*d, count);
/* set descriptor count for all but first buffer */
if (i != info->tbuf_start)
set_desc_count(*d, count);
d->buf_count = count;
if (++i == info->tbuf_count)
i = 0;
}
info->tbuf_current = i;
/* set first buffer count to make new data visible to DMA controller */
d = &info->tbufs[info->tbuf_start];
set_desc_count(*d, d->buf_count);
/* start transmitter if needed and update transmit timeout */
if (!info->tx_active)
tx_start(info);
update_tx_timer(info);
return true;
}
static int register_test(struct slgt_info *info)
@ -4934,9 +4960,7 @@ static int loopback_test(struct slgt_info *info)
spin_lock_irqsave(&info->lock,flags);
async_mode(info);
rx_start(info);
info->tx_count = count;
tx_load(info, buf, count);
tx_start(info);
spin_unlock_irqrestore(&info->lock, flags);
/* wait for receive complete */

1
drivers/char/tty_audit.c
View file

@ -148,7 +148,6 @@ void tty_audit_fork(struct signal_struct *sig)
spin_lock_irq(&current->sighand->siglock);
sig->audit_tty = current->signal->audit_tty;
spin_unlock_irq(&current->sighand->siglock);
sig->tty_audit_buf = NULL;
}
/**

17
drivers/char/tty_buffer.c
View file

@ -231,9 +231,10 @@ int tty_buffer_request_room(struct tty_struct *tty, size_t size)
EXPORT_SYMBOL_GPL(tty_buffer_request_room);
/**
* tty_insert_flip_string - Add characters to the tty buffer
* tty_insert_flip_string_fixed_flag - Add characters to the tty buffer
* @tty: tty structure
* @chars: characters
* @flag: flag value for each character
* @size: size
*
* Queue a series of bytes to the tty buffering. All the characters
@ -242,18 +243,19 @@ EXPORT_SYMBOL_GPL(tty_buffer_request_room);
* Locking: Called functions may take tty->buf.lock
*/
int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars,
size_t size)
int tty_insert_flip_string_fixed_flag(struct tty_struct *tty,
const unsigned char *chars, char flag, size_t size)
{
int copied = 0;
do {
int space = tty_buffer_request_room(tty, size - copied);
int goal = min(size - copied, TTY_BUFFER_PAGE);
int space = tty_buffer_request_room(tty, goal);
struct tty_buffer *tb = tty->buf.tail;
/* If there is no space then tb may be NULL */
if (unlikely(space == 0))
break;
memcpy(tb->char_buf_ptr + tb->used, chars, space);
memset(tb->flag_buf_ptr + tb->used, TTY_NORMAL, space);
memset(tb->flag_buf_ptr + tb->used, flag, space);
tb->used += space;
copied += space;
chars += space;
@ -262,7 +264,7 @@ int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars,
} while (unlikely(size > copied));
return copied;
}
EXPORT_SYMBOL(tty_insert_flip_string);
EXPORT_SYMBOL(tty_insert_flip_string_fixed_flag);
/**
* tty_insert_flip_string_flags - Add characters to the tty buffer
@ -283,7 +285,8 @@ int tty_insert_flip_string_flags(struct tty_struct *tty,
{
int copied = 0;
do {
int space = tty_buffer_request_room(tty, size - copied);
int goal = min(size - copied, TTY_BUFFER_PAGE);
int space = tty_buffer_request_room(tty, goal);
struct tty_buffer *tb = tty->buf.tail;
/* If there is no space then tb may be NULL */
if (unlikely(space == 0))

2
drivers/char/tty_io.c
View file

@ -2028,7 +2028,7 @@ static int tiocgwinsz(struct tty_struct *tty, struct winsize __user *arg)
* @rows: rows (character)
* @cols: cols (character)
*
* Update the termios variables and send the neccessary signals to
* Update the termios variables and send the necessary signals to
* peform a terminal resize correctly
*/

52
drivers/char/tty_ldisc.c
View file

@ -706,12 +706,13 @@ static void tty_reset_termios(struct tty_struct *tty)
/**
* tty_ldisc_reinit - reinitialise the tty ldisc
* @tty: tty to reinit
* @ldisc: line discipline to reinitialize
*
* Switch the tty back to N_TTY line discipline and leave the
* ldisc state closed
* Switch the tty to a line discipline and leave the ldisc
* state closed
*/
static void tty_ldisc_reinit(struct tty_struct *tty)
static void tty_ldisc_reinit(struct tty_struct *tty, int ldisc)
{
struct tty_ldisc *ld;
@ -721,10 +722,10 @@ static void tty_ldisc_reinit(struct tty_struct *tty)
/*
* Switch the line discipline back
*/
ld = tty_ldisc_get(N_TTY);
ld = tty_ldisc_get(ldisc);
BUG_ON(IS_ERR(ld));
tty_ldisc_assign(tty, ld);
tty_set_termios_ldisc(tty, N_TTY);
tty_set_termios_ldisc(tty, ldisc);
}
/**
@ -745,6 +746,8 @@ static void tty_ldisc_reinit(struct tty_struct *tty)
void tty_ldisc_hangup(struct tty_struct *tty)
{
struct tty_ldisc *ld;
int reset = tty->driver->flags & TTY_DRIVER_RESET_TERMIOS;
int err = 0;
/*
* FIXME! What are the locking issues here? This may me overdoing
@ -772,25 +775,32 @@ void tty_ldisc_hangup(struct tty_struct *tty)
wake_up_interruptible_poll(&tty->read_wait, POLLIN);
/*
* Shutdown the current line discipline, and reset it to
* N_TTY.
* N_TTY if need be.
*
* Avoid racing set_ldisc or tty_ldisc_release
*/
if (tty->driver->flags & TTY_DRIVER_RESET_TERMIOS) {
/* Avoid racing set_ldisc or tty_ldisc_release */
mutex_lock(&tty->ldisc_mutex);
tty_ldisc_halt(tty);
if (tty->ldisc) { /* Not yet closed */
/* Switch back to N_TTY */
tty_ldisc_reinit(tty);
/* At this point we have a closed ldisc and we want to
reopen it. We could defer this to the next open but
it means auditing a lot of other paths so this is
a FIXME */
WARN_ON(tty_ldisc_open(tty, tty->ldisc));
tty_ldisc_enable(tty);
mutex_lock(&tty->ldisc_mutex);
tty_ldisc_halt(tty);
/* At this point we have a closed ldisc and we want to
reopen it. We could defer this to the next open but
it means auditing a lot of other paths so this is
a FIXME */
if (tty->ldisc) { /* Not yet closed */
if (reset == 0) {
tty_ldisc_reinit(tty, tty->termios->c_line);
err = tty_ldisc_open(tty, tty->ldisc);
}
mutex_unlock(&tty->ldisc_mutex);
tty_reset_termios(tty);
/* If the re-open fails or we reset then go to N_TTY. The
N_TTY open cannot fail */
if (reset || err) {
tty_ldisc_reinit(tty, N_TTY);
WARN_ON(tty_ldisc_open(tty, tty->ldisc));
}
tty_ldisc_enable(tty);
}
mutex_unlock(&tty->ldisc_mutex);
if (reset)
tty_reset_termios(tty);
}
/**

29
drivers/char/virtio_console.c
View file

@ -379,7 +379,7 @@ static ssize_t send_control_msg(struct port *port, unsigned int event,
struct scatterlist sg[1];
struct virtio_console_control cpkt;
struct virtqueue *vq;
int len;
unsigned int len;
if (!use_multiport(port->portdev))
return 0;
@ -1071,27 +1071,27 @@ static void config_intr(struct virtio_device *vdev)
static unsigned int fill_queue(struct virtqueue *vq, spinlock_t *lock)
{
struct port_buffer *buf;
unsigned int ret;
int err;
unsigned int nr_added_bufs;
int ret;
ret = 0;
nr_added_bufs = 0;
do {
buf = alloc_buf(PAGE_SIZE);
if (!buf)
break;
spin_lock_irq(lock);
err = add_inbuf(vq, buf);
if (err < 0) {
ret = add_inbuf(vq, buf);
if (ret < 0) {
spin_unlock_irq(lock);
free_buf(buf);
break;
}
ret++;
nr_added_bufs++;
spin_unlock_irq(lock);
} while (err > 0);
} while (ret > 0);
return ret;
return nr_added_bufs;
}
static int add_port(struct ports_device *portdev, u32 id)
@ -1100,6 +1100,7 @@ static int add_port(struct ports_device *portdev, u32 id)
struct port *port;
struct port_buffer *buf;
dev_t devt;
unsigned int nr_added_bufs;
int err;
port = kmalloc(sizeof(*port), GFP_KERNEL);
@ -1144,8 +1145,8 @@ static int add_port(struct ports_device *portdev, u32 id)
init_waitqueue_head(&port->waitqueue);
/* Fill the in_vq with buffers so the host can send us data. */
err = fill_queue(port->in_vq, &port->inbuf_lock);
if (!err) {
nr_added_bufs = fill_queue(port->in_vq, &port->inbuf_lock);
if (!nr_added_bufs) {
dev_err(port->dev, "Error allocating inbufs\n");
err = -ENOMEM;
goto free_device;
@ -1442,12 +1443,14 @@ static int __devinit virtcons_probe(struct virtio_device *vdev)
INIT_LIST_HEAD(&portdev->ports);
if (multiport) {
unsigned int nr_added_bufs;
spin_lock_init(&portdev->cvq_lock);
INIT_WORK(&portdev->control_work, &control_work_handler);
INIT_WORK(&portdev->config_work, &config_work_handler);
err = fill_queue(portdev->c_ivq, &portdev->cvq_lock);
if (!err) {
nr_added_bufs = fill_queue(portdev->c_ivq, &portdev->cvq_lock);
if (!nr_added_bufs) {
dev_err(&vdev->dev,
"Error allocating buffers for control queue\n");
err = -ENOMEM;

6
drivers/char/vt.c
View file

@ -821,7 +821,7 @@ static inline int resize_screen(struct vc_data *vc, int width, int height,
*
* Resize a virtual console, clipping according to the actual constraints.
* If the caller passes a tty structure then update the termios winsize
* information and perform any neccessary signal handling.
* information and perform any necessary signal handling.
*
* Caller must hold the console semaphore. Takes the termios mutex and
* ctrl_lock of the tty IFF a tty is passed.
@ -2119,8 +2119,6 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
uint8_t inverse;
uint8_t width;
u16 himask, charmask;
const unsigned char *orig_buf = NULL;
int orig_count;
if (in_interrupt())
return count;
@ -2142,8 +2140,6 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
release_console_sem();
return 0;
}
orig_buf = buf;
orig_count = count;
himask = vc->vc_hi_font_mask;
charmask = himask ? 0x1ff : 0xff;

39
drivers/char/vt_ioctl.c
View file

@ -888,7 +888,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
ret = -EFAULT;
goto out;
}
if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) {
if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS && tmp.mode != VT_PROCESS_AUTO) {
ret = -EINVAL;
goto out;
}
@ -1622,7 +1622,7 @@ static void complete_change_console(struct vc_data *vc)
* telling it that it has acquired. Also check if it has died and
* clean up (similar to logic employed in change_console())
*/
if (vc->vt_mode.mode == VT_PROCESS) {
if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) {
/*
* Send the signal as privileged - kill_pid() will
* tell us if the process has gone or something else
@ -1682,7 +1682,7 @@ void change_console(struct vc_data *new_vc)
* vt to auto control.
*/
vc = vc_cons[fg_console].d;
if (vc->vt_mode.mode == VT_PROCESS) {
if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) {
/*
* Send the signal as privileged - kill_pid() will
* tell us if the process has gone or something else
@ -1693,27 +1693,28 @@ void change_console(struct vc_data *new_vc)
*/
vc->vt_newvt = new_vc->vc_num;
if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) {
if(vc->vt_mode.mode == VT_PROCESS)
/*
* It worked. Mark the vt to switch to and
* return. The process needs to send us a
* VT_RELDISP ioctl to complete the switch.
*/
return;
} else {
/*
* It worked. Mark the vt to switch to and
* return. The process needs to send us a
* VT_RELDISP ioctl to complete the switch.
* The controlling process has died, so we revert back to
* normal operation. In this case, we'll also change back
* to KD_TEXT mode. I'm not sure if this is strictly correct
* but it saves the agony when the X server dies and the screen
* remains blanked due to KD_GRAPHICS! It would be nice to do
* this outside of VT_PROCESS but there is no single process
* to account for and tracking tty count may be undesirable.
*/
return;
reset_vc(vc);
}
/*
* The controlling process has died, so we revert back to
* normal operation. In this case, we'll also change back
* to KD_TEXT mode. I'm not sure if this is strictly correct
* but it saves the agony when the X server dies and the screen
* remains blanked due to KD_GRAPHICS! It would be nice to do
* this outside of VT_PROCESS but there is no single process
* to account for and tracking tty count may be undesirable.
*/
reset_vc(vc);
/*
* Fall through to normal (VT_AUTO) handling of the switch...
* Fall through to normal (VT_AUTO and VT_PROCESS_AUTO) handling of the switch...
*/
}

9
drivers/clocksource/Kconfig
View file

@ -1,9 +0,0 @@
config CS5535_CLOCK_EVENT_SRC
tristate "CS5535/CS5536 high-res timer (MFGPT) events"
depends on GENERIC_TIME && GENERIC_CLOCKEVENTS && CS5535_MFGPT
help
This driver provides a clock event source based on the MFGPT
timer(s) in the CS5535 and CS5536 companion chips.
MFGPTs have a better resolution and max interval than the
generic PIT, and are suitable for use as high-res timers.

2
drivers/cpufreq/cpufreq.c
View file

@ -766,7 +766,7 @@ static void cpufreq_sysfs_release(struct kobject *kobj)
complete(&policy->kobj_unregister);
}
static struct sysfs_ops sysfs_ops = {
static const struct sysfs_ops sysfs_ops = {
.show = show,
.store = store,
};

2
drivers/cpuidle/governors/menu.c
View file

@ -100,8 +100,8 @@ struct menu_device {
int needs_update;
unsigned int expected_us;
u64 predicted_us;
unsigned int measured_us;
u64 predicted_us;
unsigned int exit_us;
unsigned int bucket;
u64 correction_factor[BUCKETS];

8
drivers/cpuidle/sysfs.c
View file

@ -22,6 +22,7 @@ static int __init cpuidle_sysfs_setup(char *unused)
__setup("cpuidle_sysfs_switch", cpuidle_sysfs_setup);
static ssize_t show_available_governors(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
char *buf)
{
ssize_t i = 0;
@ -41,6 +42,7 @@ out:
}
static ssize_t show_current_driver(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
char *buf)
{
ssize_t ret;
@ -56,6 +58,7 @@ static ssize_t show_current_driver(struct sysdev_class *class,
}
static ssize_t show_current_governor(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
char *buf)
{
ssize_t ret;
@ -71,6 +74,7 @@ static ssize_t show_current_governor(struct sysdev_class *class,
}
static ssize_t store_current_governor(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
const char *buf, size_t count)
{
char gov_name[CPUIDLE_NAME_LEN];
@ -191,7 +195,7 @@ static ssize_t cpuidle_store(struct kobject * kobj, struct attribute * attr,
return ret;
}
static struct sysfs_ops cpuidle_sysfs_ops = {
static const struct sysfs_ops cpuidle_sysfs_ops = {
.show = cpuidle_show,
.store = cpuidle_store,
};
@ -277,7 +281,7 @@ static ssize_t cpuidle_state_show(struct kobject * kobj,
return ret;
}
static struct sysfs_ops cpuidle_state_sysfs_ops = {
static const struct sysfs_ops cpuidle_state_sysfs_ops = {
.show = cpuidle_state_show,
};

2
drivers/crypto/hifn_795x.c
View file

@ -321,7 +321,7 @@ static atomic_t hifn_dev_number;
#define HIFN_PUBOPLEN_MOD_M 0x0000007f /* modulus length mask */
#define HIFN_PUBOPLEN_MOD_S 0 /* modulus length shift */
#define HIFN_PUBOPLEN_EXP_M 0x0003ff80 /* exponent length mask */
#define HIFN_PUBOPLEN_EXP_S 7 /* exponent lenght shift */
#define HIFN_PUBOPLEN_EXP_S 7 /* exponent length shift */
#define HIFN_PUBOPLEN_RED_M 0x003c0000 /* reducend length mask */
#define HIFN_PUBOPLEN_RED_S 18 /* reducend length shift */

23
drivers/dma/Kconfig
View file

@ -13,6 +13,22 @@ menuconfig DMADEVICES
DMA Device drivers supported by the configured arch, it may
be empty in some cases.
config DMADEVICES_DEBUG
bool "DMA Engine debugging"
depends on DMADEVICES != n
help
This is an option for use by developers; most people should
say N here. This enables DMA engine core and driver debugging.
config DMADEVICES_VDEBUG
bool "DMA Engine verbose debugging"
depends on DMADEVICES_DEBUG != n
help
This is an option for use by developers; most people should
say N here. This enables deeper (more verbose) debugging of
the DMA engine core and drivers.
if DMADEVICES
comment "DMA Devices"
@ -69,6 +85,13 @@ config FSL_DMA
The Elo is the DMA controller on some 82xx and 83xx parts, and the
Elo Plus is the DMA controller on 85xx and 86xx parts.
config MPC512X_DMA
tristate "Freescale MPC512x built-in DMA engine support"
depends on PPC_MPC512x
select DMA_ENGINE
---help---
Enable support for the Freescale MPC512x built-in DMA engine.
config MV_XOR
bool "Marvell XOR engine support"
depends on PLAT_ORION

8
drivers/dma/Makefile
View file

@ -1,9 +1,17 @@
ifeq ($(CONFIG_DMADEVICES_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG
endif
ifeq ($(CONFIG_DMADEVICES_VDEBUG),y)
EXTRA_CFLAGS += -DVERBOSE_DEBUG
endif
obj-$(CONFIG_DMA_ENGINE) += dmaengine.o
obj-$(CONFIG_NET_DMA) += iovlock.o
obj-$(CONFIG_DMATEST) += dmatest.o
obj-$(CONFIG_INTEL_IOATDMA) += ioat/
obj-$(CONFIG_INTEL_IOP_ADMA) += iop-adma.o
obj-$(CONFIG_FSL_DMA) += fsldma.o
obj-$(CONFIG_MPC512X_DMA) += mpc512x_dma.o
obj-$(CONFIG_MV_XOR) += mv_xor.o
obj-$(CONFIG_DW_DMAC) += dw_dmac.o
obj-$(CONFIG_AT_HDMAC) += at_hdmac.o

184
drivers/dma/coh901318.c
View file

@ -39,7 +39,6 @@ struct coh901318_desc {
unsigned int sg_len;
struct coh901318_lli *data;
enum dma_data_direction dir;
int pending_irqs;
unsigned long flags;
};
@ -72,7 +71,6 @@ struct coh901318_chan {
unsigned long nbr_active_done;
unsigned long busy;
int pending_irqs;
struct coh901318_base *base;
};
@ -80,18 +78,16 @@ struct coh901318_chan {
static void coh901318_list_print(struct coh901318_chan *cohc,
struct coh901318_lli *lli)
{
struct coh901318_lli *l;
dma_addr_t addr = virt_to_phys(lli);
struct coh901318_lli *l = lli;
int i = 0;
while (addr) {
l = phys_to_virt(addr);
while (l) {
dev_vdbg(COHC_2_DEV(cohc), "i %d, lli %p, ctrl 0x%x, src 0x%x"
", dst 0x%x, link 0x%x link_virt 0x%p\n",
", dst 0x%x, link 0x%x virt_link_addr 0x%p\n",
i, l, l->control, l->src_addr, l->dst_addr,
l->link_addr, phys_to_virt(l->link_addr));
l->link_addr, l->virt_link_addr);
i++;
addr = l->link_addr;
l = l->virt_link_addr;
}
}
@ -125,7 +121,7 @@ static int coh901318_debugfs_read(struct file *file, char __user *buf,
goto err_kmalloc;
tmp = dev_buf;
tmp += sprintf(tmp, "DMA -- enable dma channels\n");
tmp += sprintf(tmp, "DMA -- enabled dma channels\n");
for (i = 0; i < debugfs_dma_base->platform->max_channels; i++)
if (started_channels & (1 << i))
@ -337,16 +333,22 @@ coh901318_desc_get(struct coh901318_chan *cohc)
* TODO: alloc a pile of descs instead of just one,
* avoid many small allocations.
*/
desc = kmalloc(sizeof(struct coh901318_desc), GFP_NOWAIT);
desc = kzalloc(sizeof(struct coh901318_desc), GFP_NOWAIT);
if (desc == NULL)
goto out;
INIT_LIST_HEAD(&desc->node);
dma_async_tx_descriptor_init(&desc->desc, &cohc->chan);
} else {
/* Reuse an old desc. */
desc = list_first_entry(&cohc->free,
struct coh901318_desc,
node);
list_del(&desc->node);
/* Initialize it a bit so it's not insane */
desc->sg = NULL;
desc->sg_len = 0;
desc->desc.callback = NULL;
desc->desc.callback_param = NULL;
}
out:
@ -364,10 +366,6 @@ static void
coh901318_desc_submit(struct coh901318_chan *cohc, struct coh901318_desc *desc)
{
list_add_tail(&desc->node, &cohc->active);
BUG_ON(cohc->pending_irqs != 0);
cohc->pending_irqs = desc->pending_irqs;
}
static struct coh901318_desc *
@ -592,6 +590,10 @@ static struct coh901318_desc *coh901318_queue_start(struct coh901318_chan *cohc)
return cohd_que;
}
/*
* This tasklet is called from the interrupt handler to
* handle each descriptor (DMA job) that is sent to a channel.
*/
static void dma_tasklet(unsigned long data)
{
struct coh901318_chan *cohc = (struct coh901318_chan *) data;
@ -600,55 +602,58 @@ static void dma_tasklet(unsigned long data)
dma_async_tx_callback callback;
void *callback_param;
dev_vdbg(COHC_2_DEV(cohc), "[%s] chan_id %d"
" nbr_active_done %ld\n", __func__,
cohc->id, cohc->nbr_active_done);
spin_lock_irqsave(&cohc->lock, flags);
/* get first active entry from list */
/* get first active descriptor entry from list */
cohd_fin = coh901318_first_active_get(cohc);
BUG_ON(cohd_fin->pending_irqs == 0);
if (cohd_fin == NULL)
goto err;
cohd_fin->pending_irqs--;
cohc->completed = cohd_fin->desc.cookie;
if (cohc->nbr_active_done == 0)
return;
if (!cohd_fin->pending_irqs) {
/* release the lli allocation*/
coh901318_lli_free(&cohc->base->pool, &cohd_fin->data);
}
dev_vdbg(COHC_2_DEV(cohc), "[%s] chan_id %d pending_irqs %d"
" nbr_active_done %ld\n", __func__,
cohc->id, cohc->pending_irqs, cohc->nbr_active_done);
/* callback to client */
/* locate callback to client */
callback = cohd_fin->desc.callback;
callback_param = cohd_fin->desc.callback_param;
if (!cohd_fin->pending_irqs) {
coh901318_desc_remove(cohd_fin);
/* sign this job as completed on the channel */
cohc->completed = cohd_fin->desc.cookie;
/* return desc to free-list */
coh901318_desc_free(cohc, cohd_fin);
}
/* release the lli allocation and remove the descriptor */
coh901318_lli_free(&cohc->base->pool, &cohd_fin->data);
if (cohc->nbr_active_done)
cohc->nbr_active_done--;
/* return desc to free-list */
coh901318_desc_remove(cohd_fin);
coh901318_desc_free(cohc, cohd_fin);
spin_unlock_irqrestore(&cohc->lock, flags);
/* Call the callback when we're done */
if (callback)
callback(callback_param);
spin_lock_irqsave(&cohc->lock, flags);
/*
* If another interrupt fired while the tasklet was scheduling,
* we don't get called twice, so we have this number of active
* counter that keep track of the number of IRQs expected to
* be handled for this channel. If there happen to be more than
* one IRQ to be ack:ed, we simply schedule this tasklet again.
*/
cohc->nbr_active_done--;
if (cohc->nbr_active_done) {
dev_dbg(COHC_2_DEV(cohc), "scheduling tasklet again, new IRQs "
"came in while we were scheduling this tasklet\n");
if (cohc_chan_conf(cohc)->priority_high)
tasklet_hi_schedule(&cohc->tasklet);
else
tasklet_schedule(&cohc->tasklet);
}
spin_unlock_irqrestore(&cohc->lock, flags);
if (callback)
callback(callback_param);
spin_unlock_irqrestore(&cohc->lock, flags);
return;
@ -667,16 +672,17 @@ static void dma_tc_handle(struct coh901318_chan *cohc)
if (!cohc->allocated)
return;
BUG_ON(cohc->pending_irqs == 0);
spin_lock(&cohc->lock);
cohc->pending_irqs--;
cohc->nbr_active_done++;
if (cohc->pending_irqs == 0 && coh901318_queue_start(cohc) == NULL)
if (coh901318_queue_start(cohc) == NULL)
cohc->busy = 0;
BUG_ON(list_empty(&cohc->active));
spin_unlock(&cohc->lock);
if (cohc_chan_conf(cohc)->priority_high)
tasklet_hi_schedule(&cohc->tasklet);
else
@ -870,6 +876,7 @@ coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
struct coh901318_chan *cohc = to_coh901318_chan(chan);
int lli_len;
u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
int ret;
spin_lock_irqsave(&cohc->lock, flg);
@ -890,22 +897,19 @@ coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
if (data == NULL)
goto err;
cohd = coh901318_desc_get(cohc);
cohd->sg = NULL;
cohd->sg_len = 0;
cohd->data = data;
cohd->pending_irqs =
coh901318_lli_fill_memcpy(
&cohc->base->pool, data, src, size, dest,
cohc_chan_param(cohc)->ctrl_lli_chained,
ctrl_last);
cohd->flags = flags;
ret = coh901318_lli_fill_memcpy(
&cohc->base->pool, data, src, size, dest,
cohc_chan_param(cohc)->ctrl_lli_chained,
ctrl_last);
if (ret)
goto err;
COH_DBG(coh901318_list_print(cohc, data));
dma_async_tx_descriptor_init(&cohd->desc, chan);
/* Pick a descriptor to handle this transfer */
cohd = coh901318_desc_get(cohc);
cohd->data = data;
cohd->flags = flags;
cohd->desc.tx_submit = coh901318_tx_submit;
spin_unlock_irqrestore(&cohc->lock, flg);
@ -924,6 +928,7 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
struct coh901318_chan *cohc = to_coh901318_chan(chan);
struct coh901318_lli *data;
struct coh901318_desc *cohd;
const struct coh901318_params *params;
struct scatterlist *sg;
int len = 0;
int size;
@ -931,7 +936,9 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
u32 ctrl_chained = cohc_chan_param(cohc)->ctrl_lli_chained;
u32 ctrl = cohc_chan_param(cohc)->ctrl_lli;
u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
u32 config;
unsigned long flg;
int ret;
if (!sgl)
goto out;
@ -947,15 +954,14 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
/* Trigger interrupt after last lli */
ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
cohd = coh901318_desc_get(cohc);
cohd->sg = NULL;
cohd->sg_len = 0;
cohd->dir = direction;
params = cohc_chan_param(cohc);
config = params->config;
if (direction == DMA_TO_DEVICE) {
u32 tx_flags = COH901318_CX_CTRL_PRDD_SOURCE |
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE;
config |= COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY;
ctrl_chained |= tx_flags;
ctrl_last |= tx_flags;
ctrl |= tx_flags;
@ -963,16 +969,14 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
u32 rx_flags = COH901318_CX_CTRL_PRDD_DEST |
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE;
config |= COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY;
ctrl_chained |= rx_flags;
ctrl_last |= rx_flags;
ctrl |= rx_flags;
} else
goto err_direction;
dma_async_tx_descriptor_init(&cohd->desc, chan);
cohd->desc.tx_submit = coh901318_tx_submit;
coh901318_set_conf(cohc, config);
/* The dma only supports transmitting packages up to
* MAX_DMA_PACKET_SIZE. Calculate to total number of
@ -994,32 +998,37 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
len += factor;
}
pr_debug("Allocate %d lli:s for this transfer\n", len);
data = coh901318_lli_alloc(&cohc->base->pool, len);
if (data == NULL)
goto err_dma_alloc;
/* initiate allocated data list */
cohd->pending_irqs =
coh901318_lli_fill_sg(&cohc->base->pool, data, sgl, sg_len,
cohc_dev_addr(cohc),
ctrl_chained,
ctrl,
ctrl_last,
direction, COH901318_CX_CTRL_TC_IRQ_ENABLE);
cohd->data = data;
cohd->flags = flags;
ret = coh901318_lli_fill_sg(&cohc->base->pool, data, sgl, sg_len,
cohc_dev_addr(cohc),
ctrl_chained,
ctrl,
ctrl_last,
direction, COH901318_CX_CTRL_TC_IRQ_ENABLE);
if (ret)
goto err_lli_fill;
COH_DBG(coh901318_list_print(cohc, data));
/* Pick a descriptor to handle this transfer */
cohd = coh901318_desc_get(cohc);
cohd->dir = direction;
cohd->flags = flags;
cohd->desc.tx_submit = coh901318_tx_submit;
cohd->data = data;
spin_unlock_irqrestore(&cohc->lock, flg);
return &cohd->desc;
err_lli_fill:
err_dma_alloc:
err_direction:
coh901318_desc_remove(cohd);
coh901318_desc_free(cohc, cohd);
spin_unlock_irqrestore(&cohc->lock, flg);
out:
return NULL;
@ -1092,9 +1101,8 @@ coh901318_terminate_all(struct dma_chan *chan)
/* release the lli allocation*/
coh901318_lli_free(&cohc->base->pool, &cohd->data);
coh901318_desc_remove(cohd);
/* return desc to free-list */
coh901318_desc_remove(cohd);
coh901318_desc_free(cohc, cohd);
}
@ -1102,16 +1110,14 @@ coh901318_terminate_all(struct dma_chan *chan)
/* release the lli allocation*/
coh901318_lli_free(&cohc->base->pool, &cohd->data);
coh901318_desc_remove(cohd);
/* return desc to free-list */
coh901318_desc_remove(cohd);
coh901318_desc_free(cohc, cohd);
}
cohc->nbr_active_done = 0;
cohc->busy = 0;
cohc->pending_irqs = 0;
spin_unlock_irqrestore(&cohc->lock, flags);
}
@ -1138,7 +1144,6 @@ void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
spin_lock_init(&cohc->lock);
cohc->pending_irqs = 0;
cohc->nbr_active_done = 0;
cohc->busy = 0;
INIT_LIST_HEAD(&cohc->free);
@ -1254,12 +1259,17 @@ static int __init coh901318_probe(struct platform_device *pdev)
base->dma_memcpy.device_issue_pending = coh901318_issue_pending;
base->dma_memcpy.device_terminate_all = coh901318_terminate_all;
base->dma_memcpy.dev = &pdev->dev;
/*
* This controller can only access address at even 32bit boundaries,
* i.e. 2^2
*/
base->dma_memcpy.copy_align = 2;
err = dma_async_device_register(&base->dma_memcpy);
if (err)
goto err_register_memcpy;
dev_dbg(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%08x\n",
dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%08x\n",
(u32) base->virtbase);
return err;

23
drivers/dma/coh901318_lli.c
View file

@ -74,6 +74,8 @@ coh901318_lli_alloc(struct coh901318_pool *pool, unsigned int len)
lli = head;
lli->phy_this = phy;
lli->link_addr = 0x00000000;
lli->virt_link_addr = 0x00000000U;
for (i = 1; i < len; i++) {
lli_prev = lli;
@ -85,13 +87,13 @@ coh901318_lli_alloc(struct coh901318_pool *pool, unsigned int len)
DEBUGFS_POOL_COUNTER_ADD(pool, 1);
lli->phy_this = phy;
lli->link_addr = 0x00000000;
lli->virt_link_addr = 0x00000000U;
lli_prev->link_addr = phy;
lli_prev->virt_link_addr = lli;
}
lli->link_addr = 0x00000000U;
spin_unlock(&pool->lock);
return head;
@ -166,8 +168,7 @@ coh901318_lli_fill_memcpy(struct coh901318_pool *pool,
lli->src_addr = src;
lli->dst_addr = dst;
/* One irq per single transfer */
return 1;
return 0;
}
int
@ -223,8 +224,7 @@ coh901318_lli_fill_single(struct coh901318_pool *pool,
lli->src_addr = src;
lli->dst_addr = dst;
/* One irq per single transfer */
return 1;
return 0;
}
int
@ -240,7 +240,6 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool,
u32 ctrl_sg;
dma_addr_t src = 0;
dma_addr_t dst = 0;
int nbr_of_irq = 0;
u32 bytes_to_transfer;
u32 elem_size;
@ -269,15 +268,12 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool,
ctrl_sg = ctrl ? ctrl : ctrl_last;
if ((ctrl_sg & ctrl_irq_mask))
nbr_of_irq++;
if (dir == DMA_TO_DEVICE)
/* increment source address */
src = sg_dma_address(sg);
src = sg_phys(sg);
else
/* increment destination address */
dst = sg_dma_address(sg);
dst = sg_phys(sg);
bytes_to_transfer = sg_dma_len(sg);
@ -310,8 +306,7 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool,
}
spin_unlock(&pool->lock);
/* There can be many IRQs per sg transfer */
return nbr_of_irq;
return 0;
err:
spin_unlock(&pool->lock);
return -EINVAL;

2
drivers/dma/coh901318_lli.h
View file

@ -30,7 +30,7 @@ struct device;
* @pool: pool handle
* @dev: dma device
* @lli_nbr: number of lli:s in the pool
* @algin: adress alignemtn of lli:s
* @algin: address alignemtn of lli:s
* returns 0 on success otherwise none zero
*/
int coh901318_pool_create(struct coh901318_pool *pool,

2
drivers/dma/dmaengine.c
View file

@ -284,7 +284,7 @@ struct dma_chan_tbl_ent {
/**
* channel_table - percpu lookup table for memory-to-memory offload providers
*/
static struct dma_chan_tbl_ent *channel_table[DMA_TX_TYPE_END];
static struct dma_chan_tbl_ent __percpu *channel_table[DMA_TX_TYPE_END];
static int __init dma_channel_table_init(void)
{

8
drivers/dma/dmatest.c
View file

@ -237,7 +237,7 @@ static int dmatest_func(void *data)
dma_cookie_t cookie;
enum dma_status status;
enum dma_ctrl_flags flags;
u8 pq_coefs[pq_sources];
u8 pq_coefs[pq_sources + 1];
int ret;
int src_cnt;
int dst_cnt;
@ -257,7 +257,7 @@ static int dmatest_func(void *data)
} else if (thread->type == DMA_PQ) {
src_cnt = pq_sources | 1; /* force odd to ensure dst = src */
dst_cnt = 2;
for (i = 0; i < pq_sources; i++)
for (i = 0; i < src_cnt; i++)
pq_coefs[i] = 1;
} else
goto err_srcs;
@ -347,7 +347,7 @@ static int dmatest_func(void *data)
else if (thread->type == DMA_XOR)
tx = dev->device_prep_dma_xor(chan,
dma_dsts[0] + dst_off,
dma_srcs, xor_sources,
dma_srcs, src_cnt,
len, flags);
else if (thread->type == DMA_PQ) {
dma_addr_t dma_pq[dst_cnt];
@ -355,7 +355,7 @@ static int dmatest_func(void *data)
for (i = 0; i < dst_cnt; i++)
dma_pq[i] = dma_dsts[i] + dst_off;
tx = dev->device_prep_dma_pq(chan, dma_pq, dma_srcs,
pq_sources, pq_coefs,
src_cnt, pq_coefs,
len, flags);
}

1217
drivers/dma/fsldma.c
View file

File diff suppressed because it is too large Load diff

35
drivers/dma/fsldma.h
View file

@ -92,11 +92,9 @@ struct fsl_desc_sw {
struct list_head node;
struct list_head tx_list;
struct dma_async_tx_descriptor async_tx;
struct list_head *ld;
void *priv;
} __attribute__((aligned(32)));
struct fsl_dma_chan_regs {
struct fsldma_chan_regs {
u32 mr; /* 0x00 - Mode Register */
u32 sr; /* 0x04 - Status Register */
u64 cdar; /* 0x08 - Current descriptor address register */
@ -106,20 +104,19 @@ struct fsl_dma_chan_regs {
u64 ndar; /* 0x24 - Next Descriptor Address Register */
};
struct fsl_dma_chan;
struct fsldma_chan;
#define FSL_DMA_MAX_CHANS_PER_DEVICE 4
struct fsl_dma_device {
void __iomem *reg_base; /* DGSR register base */
struct resource reg; /* Resource for register */
struct fsldma_device {
void __iomem *regs; /* DGSR register base */
struct device *dev;
struct dma_device common;
struct fsl_dma_chan *chan[FSL_DMA_MAX_CHANS_PER_DEVICE];
struct fsldma_chan *chan[FSL_DMA_MAX_CHANS_PER_DEVICE];
u32 feature; /* The same as DMA channels */
int irq; /* Channel IRQ */
};
/* Define macros for fsl_dma_chan->feature property */
/* Define macros for fsldma_chan->feature property */
#define FSL_DMA_LITTLE_ENDIAN 0x00000000
#define FSL_DMA_BIG_ENDIAN 0x00000001
@ -130,28 +127,28 @@ struct fsl_dma_device {
#define FSL_DMA_CHAN_PAUSE_EXT 0x00001000
#define FSL_DMA_CHAN_START_EXT 0x00002000
struct fsl_dma_chan {
struct fsl_dma_chan_regs __iomem *reg_base;
struct fsldma_chan {
struct fsldma_chan_regs __iomem *regs;
dma_cookie_t completed_cookie; /* The maximum cookie completed */
spinlock_t desc_lock; /* Descriptor operation lock */
struct list_head ld_queue; /* Link descriptors queue */
struct list_head ld_pending; /* Link descriptors queue */
struct list_head ld_running; /* Link descriptors queue */
struct dma_chan common; /* DMA common channel */
struct dma_pool *desc_pool; /* Descriptors pool */
struct device *dev; /* Channel device */
struct resource reg; /* Resource for register */
int irq; /* Channel IRQ */
int id; /* Raw id of this channel */
struct tasklet_struct tasklet;
u32 feature;
void (*toggle_ext_pause)(struct fsl_dma_chan *fsl_chan, int enable);
void (*toggle_ext_start)(struct fsl_dma_chan *fsl_chan, int enable);
void (*set_src_loop_size)(struct fsl_dma_chan *fsl_chan, int size);
void (*set_dest_loop_size)(struct fsl_dma_chan *fsl_chan, int size);
void (*set_request_count)(struct fsl_dma_chan *fsl_chan, int size);
void (*toggle_ext_pause)(struct fsldma_chan *fsl_chan, int enable);
void (*toggle_ext_start)(struct fsldma_chan *fsl_chan, int enable);
void (*set_src_loop_size)(struct fsldma_chan *fsl_chan, int size);
void (*set_dst_loop_size)(struct fsldma_chan *fsl_chan, int size);
void (*set_request_count)(struct fsldma_chan *fsl_chan, int size);
};
#define to_fsl_chan(chan) container_of(chan, struct fsl_dma_chan, common)
#define to_fsl_chan(chan) container_of(chan, struct fsldma_chan, common)
#define to_fsl_desc(lh) container_of(lh, struct fsl_desc_sw, node)
#define tx_to_fsl_desc(tx) container_of(tx, struct fsl_desc_sw, async_tx)

50
drivers/dma/ioat/dma.c
View file

@ -71,7 +71,7 @@ static irqreturn_t ioat_dma_do_interrupt(int irq, void *data)
}
attnstatus = readl(instance->reg_base + IOAT_ATTNSTATUS_OFFSET);
for_each_bit(bit, &attnstatus, BITS_PER_LONG) {
for_each_set_bit(bit, &attnstatus, BITS_PER_LONG) {
chan = ioat_chan_by_index(instance, bit);
tasklet_schedule(&chan->cleanup_task);
}
@ -94,16 +94,12 @@ static irqreturn_t ioat_dma_do_interrupt_msix(int irq, void *data)
return IRQ_HANDLED;
}
static void ioat1_cleanup_tasklet(unsigned long data);
/* common channel initialization */
void ioat_init_channel(struct ioatdma_device *device,
struct ioat_chan_common *chan, int idx,
void (*timer_fn)(unsigned long),
void (*tasklet)(unsigned long),
unsigned long ioat)
void ioat_init_channel(struct ioatdma_device *device, struct ioat_chan_common *chan, int idx)
{
struct dma_device *dma = &device->common;
struct dma_chan *c = &chan->common;
unsigned long data = (unsigned long) c;
chan->device = device;
chan->reg_base = device->reg_base + (0x80 * (idx + 1));
@ -112,14 +108,12 @@ void ioat_init_channel(struct ioatdma_device *device,
list_add_tail(&chan->common.device_node, &dma->channels);
device->idx[idx] = chan;
init_timer(&chan->timer);
chan->timer.function = timer_fn;
chan->timer.data = ioat;
tasklet_init(&chan->cleanup_task, tasklet, ioat);
chan->timer.function = device->timer_fn;
chan->timer.data = data;
tasklet_init(&chan->cleanup_task, device->cleanup_fn, data);
tasklet_disable(&chan->cleanup_task);
}
static void ioat1_timer_event(unsigned long data);
/**
* ioat1_dma_enumerate_channels - find and initialize the device's channels
* @device: the device to be enumerated
@ -155,10 +149,7 @@ static int ioat1_enumerate_channels(struct ioatdma_device *device)
if (!ioat)
break;
ioat_init_channel(device, &ioat->base, i,
ioat1_timer_event,
ioat1_cleanup_tasklet,
(unsigned long) ioat);
ioat_init_channel(device, &ioat->base, i);
ioat->xfercap = xfercap;
spin_lock_init(&ioat->desc_lock);
INIT_LIST_HEAD(&ioat->free_desc);
@ -532,12 +523,12 @@ ioat1_dma_prep_memcpy(struct dma_chan *c, dma_addr_t dma_dest,
return &desc->txd;
}
static void ioat1_cleanup_tasklet(unsigned long data)
static void ioat1_cleanup_event(unsigned long data)
{
struct ioat_dma_chan *chan = (void *)data;
struct ioat_dma_chan *ioat = to_ioat_chan((void *) data);
ioat1_cleanup(chan);
writew(IOAT_CHANCTRL_RUN, chan->base.reg_base + IOAT_CHANCTRL_OFFSET);
ioat1_cleanup(ioat);
writew(IOAT_CHANCTRL_RUN, ioat->base.reg_base + IOAT_CHANCTRL_OFFSET);
}
void ioat_dma_unmap(struct ioat_chan_common *chan, enum dma_ctrl_flags flags,
@ -687,7 +678,7 @@ static void ioat1_cleanup(struct ioat_dma_chan *ioat)
static void ioat1_timer_event(unsigned long data)
{
struct ioat_dma_chan *ioat = (void *) data;
struct ioat_dma_chan *ioat = to_ioat_chan((void *) data);
struct ioat_chan_common *chan = &ioat->base;
dev_dbg(to_dev(chan), "%s: state: %lx\n", __func__, chan->state);
@ -734,16 +725,17 @@ static void ioat1_timer_event(unsigned long data)
spin_unlock_bh(&chan->cleanup_lock);
}
static enum dma_status
ioat1_dma_is_complete(struct dma_chan *c, dma_cookie_t cookie,
enum dma_status
ioat_is_dma_complete(struct dma_chan *c, dma_cookie_t cookie,
dma_cookie_t *done, dma_cookie_t *used)
{
struct ioat_dma_chan *ioat = to_ioat_chan(c);
struct ioat_chan_common *chan = to_chan_common(c);
struct ioatdma_device *device = chan->device;
if (ioat_is_complete(c, cookie, done, used) == DMA_SUCCESS)
return DMA_SUCCESS;
ioat1_cleanup(ioat);
device->cleanup_fn((unsigned long) c);
return ioat_is_complete(c, cookie, done, used);
}
@ -1146,7 +1138,7 @@ ioat_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
return entry->show(&chan->common, page);
}
struct sysfs_ops ioat_sysfs_ops = {
const struct sysfs_ops ioat_sysfs_ops = {
.show = ioat_attr_show,
};
@ -1199,12 +1191,14 @@ int __devinit ioat1_dma_probe(struct ioatdma_device *device, int dca)
device->intr_quirk = ioat1_intr_quirk;
device->enumerate_channels = ioat1_enumerate_channels;
device->self_test = ioat_dma_self_test;
device->timer_fn = ioat1_timer_event;
device->cleanup_fn = ioat1_cleanup_event;
dma = &device->common;
dma->device_prep_dma_memcpy = ioat1_dma_prep_memcpy;
dma->device_issue_pending = ioat1_dma_memcpy_issue_pending;
dma->device_alloc_chan_resources = ioat1_dma_alloc_chan_resources;
dma->device_free_chan_resources = ioat1_dma_free_chan_resources;
dma->device_is_tx_complete = ioat1_dma_is_complete;
dma->device_is_tx_complete = ioat_is_dma_complete;
err = ioat_probe(device);
if (err)

13
drivers/dma/ioat/dma.h
View file

@ -61,7 +61,7 @@
* @intr_quirk: interrupt setup quirk (for ioat_v1 devices)
* @enumerate_channels: hw version specific channel enumeration
* @reset_hw: hw version specific channel (re)initialization
* @cleanup_tasklet: select between the v2 and v3 cleanup routines
* @cleanup_fn: select between the v2 and v3 cleanup routines
* @timer_fn: select between the v2 and v3 timer watchdog routines
* @self_test: hardware version specific self test for each supported op type
*
@ -80,7 +80,7 @@ struct ioatdma_device {
void (*intr_quirk)(struct ioatdma_device *device);
int (*enumerate_channels)(struct ioatdma_device *device);
int (*reset_hw)(struct ioat_chan_common *chan);
void (*cleanup_tasklet)(unsigned long data);
void (*cleanup_fn)(unsigned long data);
void (*timer_fn)(unsigned long data);
int (*self_test)(struct ioatdma_device *device);
};
@ -337,17 +337,16 @@ struct dca_provider * __devinit ioat_dca_init(struct pci_dev *pdev,
void __iomem *iobase);
unsigned long ioat_get_current_completion(struct ioat_chan_common *chan);
void ioat_init_channel(struct ioatdma_device *device,
struct ioat_chan_common *chan, int idx,
void (*timer_fn)(unsigned long),
void (*tasklet)(unsigned long),
unsigned long ioat);
struct ioat_chan_common *chan, int idx);
enum dma_status ioat_is_dma_complete(struct dma_chan *c, dma_cookie_t cookie,
dma_cookie_t *done, dma_cookie_t *used);
void ioat_dma_unmap(struct ioat_chan_common *chan, enum dma_ctrl_flags flags,
size_t len, struct ioat_dma_descriptor *hw);
bool ioat_cleanup_preamble(struct ioat_chan_common *chan,
unsigned long *phys_complete);
void ioat_kobject_add(struct ioatdma_device *device, struct kobj_type *type);
void ioat_kobject_del(struct ioatdma_device *device);
extern struct sysfs_ops ioat_sysfs_ops;
extern const struct sysfs_ops ioat_sysfs_ops;
extern struct ioat_sysfs_entry ioat_version_attr;
extern struct ioat_sysfs_entry ioat_cap_attr;
#endif /* IOATDMA_H */

70
drivers/dma/ioat/dma_v2.c
View file

@ -51,48 +51,40 @@ MODULE_PARM_DESC(ioat_ring_max_alloc_order,
void __ioat2_issue_pending(struct ioat2_dma_chan *ioat)
{
void * __iomem reg_base = ioat->base.reg_base;
struct ioat_chan_common *chan = &ioat->base;
ioat->pending = 0;
ioat->dmacount += ioat2_ring_pending(ioat);
ioat->issued = ioat->head;
/* make descriptor updates globally visible before notifying channel */
wmb();
writew(ioat->dmacount, reg_base + IOAT_CHAN_DMACOUNT_OFFSET);
dev_dbg(to_dev(&ioat->base),
writew(ioat->dmacount, chan->reg_base + IOAT_CHAN_DMACOUNT_OFFSET);
dev_dbg(to_dev(chan),
"%s: head: %#x tail: %#x issued: %#x count: %#x\n",
__func__, ioat->head, ioat->tail, ioat->issued, ioat->dmacount);
}
void ioat2_issue_pending(struct dma_chan *chan)
void ioat2_issue_pending(struct dma_chan *c)
{
struct ioat2_dma_chan *ioat = to_ioat2_chan(chan);
struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
spin_lock_bh(&ioat->ring_lock);
if (ioat->pending == 1)
if (ioat2_ring_pending(ioat)) {
spin_lock_bh(&ioat->ring_lock);
__ioat2_issue_pending(ioat);
spin_unlock_bh(&ioat->ring_lock);
spin_unlock_bh(&ioat->ring_lock);
}
}
/**
* ioat2_update_pending - log pending descriptors
* @ioat: ioat2+ channel
*
* set pending to '1' unless pending is already set to '2', pending == 2
* indicates that submission is temporarily blocked due to an in-flight
* reset. If we are already above the ioat_pending_level threshold then
* just issue pending.
*
* called with ring_lock held
* Check if the number of unsubmitted descriptors has exceeded the
* watermark. Called with ring_lock held
*/
static void ioat2_update_pending(struct ioat2_dma_chan *ioat)
{
if (unlikely(ioat->pending == 2))
return;
else if (ioat2_ring_pending(ioat) > ioat_pending_level)
if (ioat2_ring_pending(ioat) > ioat_pending_level)
__ioat2_issue_pending(ioat);
else
ioat->pending = 1;
}
static void __ioat2_start_null_desc(struct ioat2_dma_chan *ioat)
@ -166,7 +158,7 @@ static void __cleanup(struct ioat2_dma_chan *ioat, unsigned long phys_complete)
seen_current = true;
}
ioat->tail += i;
BUG_ON(!seen_current); /* no active descs have written a completion? */
BUG_ON(active && !seen_current); /* no active descs have written a completion? */
chan->last_completion = phys_complete;
if (ioat->head == ioat->tail) {
@ -207,9 +199,9 @@ static void ioat2_cleanup(struct ioat2_dma_chan *ioat)
spin_unlock_bh(&chan->cleanup_lock);
}
void ioat2_cleanup_tasklet(unsigned long data)
void ioat2_cleanup_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
ioat2_cleanup(ioat);
writew(IOAT_CHANCTRL_RUN, ioat->base.reg_base + IOAT_CHANCTRL_OFFSET);
@ -291,7 +283,7 @@ static void ioat2_restart_channel(struct ioat2_dma_chan *ioat)
void ioat2_timer_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
struct ioat_chan_common *chan = &ioat->base;
spin_lock_bh(&chan->cleanup_lock);
@ -397,10 +389,7 @@ int ioat2_enumerate_channels(struct ioatdma_device *device)
if (!ioat)
break;
ioat_init_channel(device, &ioat->base, i,
device->timer_fn,
device->cleanup_tasklet,
(unsigned long) ioat);
ioat_init_channel(device, &ioat->base, i);
ioat->xfercap_log = xfercap_log;
spin_lock_init(&ioat->ring_lock);
if (device->reset_hw(&ioat->base)) {
@ -546,7 +535,6 @@ int ioat2_alloc_chan_resources(struct dma_chan *c)
ioat->head = 0;
ioat->issued = 0;
ioat->tail = 0;
ioat->pending = 0;
ioat->alloc_order = order;
spin_unlock_bh(&ioat->ring_lock);
@ -701,7 +689,7 @@ int ioat2_alloc_and_lock(u16 *idx, struct ioat2_dma_chan *ioat, int num_descs)
mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
spin_unlock_bh(&chan->cleanup_lock);
device->timer_fn((unsigned long) ioat);
device->timer_fn((unsigned long) &chan->common);
} else
spin_unlock_bh(&chan->cleanup_lock);
return -ENOMEM;
@ -785,7 +773,7 @@ void ioat2_free_chan_resources(struct dma_chan *c)
tasklet_disable(&chan->cleanup_task);
del_timer_sync(&chan->timer);
device->cleanup_tasklet((unsigned long) ioat);
device->cleanup_fn((unsigned long) c);
device->reset_hw(chan);
spin_lock_bh(&ioat->ring_lock);
@ -815,25 +803,9 @@ void ioat2_free_chan_resources(struct dma_chan *c)
chan->last_completion = 0;
chan->completion_dma = 0;
ioat->pending = 0;
ioat->dmacount = 0;
}
enum dma_status
ioat2_is_complete(struct dma_chan *c, dma_cookie_t cookie,
dma_cookie_t *done, dma_cookie_t *used)
{
struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
struct ioatdma_device *device = ioat->base.device;
if (ioat_is_complete(c, cookie, done, used) == DMA_SUCCESS)
return DMA_SUCCESS;
device->cleanup_tasklet((unsigned long) ioat);
return ioat_is_complete(c, cookie, done, used);
}
static ssize_t ring_size_show(struct dma_chan *c, char *page)
{
struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
@ -874,7 +846,7 @@ int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca)
device->enumerate_channels = ioat2_enumerate_channels;
device->reset_hw = ioat2_reset_hw;
device->cleanup_tasklet = ioat2_cleanup_tasklet;
device->cleanup_fn = ioat2_cleanup_event;
device->timer_fn = ioat2_timer_event;
device->self_test = ioat_dma_self_test;
dma = &device->common;
@ -882,7 +854,7 @@ int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca)
dma->device_issue_pending = ioat2_issue_pending;
dma->device_alloc_chan_resources = ioat2_alloc_chan_resources;
dma->device_free_chan_resources = ioat2_free_chan_resources;
dma->device_is_tx_complete = ioat2_is_complete;
dma->device_is_tx_complete = ioat_is_dma_complete;
err = ioat_probe(device);
if (err)

6
drivers/dma/ioat/dma_v2.h
View file

@ -47,7 +47,6 @@ extern int ioat_ring_alloc_order;
* @head: allocated index
* @issued: hardware notification point
* @tail: cleanup index
* @pending: lock free indicator for issued != head
* @dmacount: identical to 'head' except for occasionally resetting to zero
* @alloc_order: log2 of the number of allocated descriptors
* @ring: software ring buffer implementation of hardware ring
@ -61,7 +60,6 @@ struct ioat2_dma_chan {
u16 tail;
u16 dmacount;
u16 alloc_order;
int pending;
struct ioat_ring_ent **ring;
spinlock_t ring_lock;
};
@ -178,12 +176,10 @@ ioat2_dma_prep_memcpy_lock(struct dma_chan *c, dma_addr_t dma_dest,
void ioat2_issue_pending(struct dma_chan *chan);
int ioat2_alloc_chan_resources(struct dma_chan *c);
void ioat2_free_chan_resources(struct dma_chan *c);
enum dma_status ioat2_is_complete(struct dma_chan *c, dma_cookie_t cookie,
dma_cookie_t *done, dma_cookie_t *used);
void __ioat2_restart_chan(struct ioat2_dma_chan *ioat);
bool reshape_ring(struct ioat2_dma_chan *ioat, int order);
void __ioat2_issue_pending(struct ioat2_dma_chan *ioat);
void ioat2_cleanup_tasklet(unsigned long data);
void ioat2_cleanup_event(unsigned long data);
void ioat2_timer_event(unsigned long data);
int ioat2_quiesce(struct ioat_chan_common *chan, unsigned long tmo);
int ioat2_reset_sync(struct ioat_chan_common *chan, unsigned long tmo);

64
drivers/dma/ioat/dma_v3.c
View file

@ -293,17 +293,25 @@ static void __cleanup(struct ioat2_dma_chan *ioat, unsigned long phys_complete)
}
}
ioat->tail += i;
BUG_ON(!seen_current); /* no active descs have written a completion? */
BUG_ON(active && !seen_current); /* no active descs have written a completion? */
chan->last_completion = phys_complete;
if (ioat->head == ioat->tail) {
active = ioat2_ring_active(ioat);
if (active == 0) {
dev_dbg(to_dev(chan), "%s: cancel completion timeout\n",
__func__);
clear_bit(IOAT_COMPLETION_PENDING, &chan->state);
mod_timer(&chan->timer, jiffies + IDLE_TIMEOUT);
}
/* 5 microsecond delay per pending descriptor */
writew(min((5 * active), IOAT_INTRDELAY_MASK),
chan->device->reg_base + IOAT_INTRDELAY_OFFSET);
}
static void ioat3_cleanup(struct ioat2_dma_chan *ioat)
/* try to cleanup, but yield (via spin_trylock) to incoming submissions
* with the expectation that we will immediately poll again shortly
*/
static void ioat3_cleanup_poll(struct ioat2_dma_chan *ioat)
{
struct ioat_chan_common *chan = &ioat->base;
unsigned long phys_complete;
@ -329,29 +337,41 @@ static void ioat3_cleanup(struct ioat2_dma_chan *ioat)
spin_unlock_bh(&chan->cleanup_lock);
}
static void ioat3_cleanup_tasklet(unsigned long data)
/* run cleanup now because we already delayed the interrupt via INTRDELAY */
static void ioat3_cleanup_sync(struct ioat2_dma_chan *ioat)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat_chan_common *chan = &ioat->base;
unsigned long phys_complete;
ioat3_cleanup(ioat);
writew(IOAT_CHANCTRL_RUN | IOAT3_CHANCTRL_COMPL_DCA_EN,
ioat->base.reg_base + IOAT_CHANCTRL_OFFSET);
prefetch(chan->completion);
spin_lock_bh(&chan->cleanup_lock);
if (!ioat_cleanup_preamble(chan, &phys_complete)) {
spin_unlock_bh(&chan->cleanup_lock);
return;
}
spin_lock_bh(&ioat->ring_lock);
__cleanup(ioat, phys_complete);
spin_unlock_bh(&ioat->ring_lock);
spin_unlock_bh(&chan->cleanup_lock);
}
static void ioat3_cleanup_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
ioat3_cleanup_sync(ioat);
writew(IOAT_CHANCTRL_RUN, ioat->base.reg_base + IOAT_CHANCTRL_OFFSET);
}
static void ioat3_restart_channel(struct ioat2_dma_chan *ioat)
{
struct ioat_chan_common *chan = &ioat->base;
unsigned long phys_complete;
u32 status;
status = ioat_chansts(chan);
if (is_ioat_active(status) || is_ioat_idle(status))
ioat_suspend(chan);
while (is_ioat_active(status) || is_ioat_idle(status)) {
status = ioat_chansts(chan);
cpu_relax();
}
ioat2_quiesce(chan, 0);
if (ioat_cleanup_preamble(chan, &phys_complete))
__cleanup(ioat, phys_complete);
@ -360,7 +380,7 @@ static void ioat3_restart_channel(struct ioat2_dma_chan *ioat)
static void ioat3_timer_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
struct ioat_chan_common *chan = &ioat->base;
spin_lock_bh(&chan->cleanup_lock);
@ -426,7 +446,7 @@ ioat3_is_complete(struct dma_chan *c, dma_cookie_t cookie,
if (ioat_is_complete(c, cookie, done, used) == DMA_SUCCESS)
return DMA_SUCCESS;
ioat3_cleanup(ioat);
ioat3_cleanup_poll(ioat);
return ioat_is_complete(c, cookie, done, used);
}
@ -1239,11 +1259,11 @@ int __devinit ioat3_dma_probe(struct ioatdma_device *device, int dca)
if (is_raid_device) {
dma->device_is_tx_complete = ioat3_is_complete;
device->cleanup_tasklet = ioat3_cleanup_tasklet;
device->cleanup_fn = ioat3_cleanup_event;
device->timer_fn = ioat3_timer_event;
} else {
dma->device_is_tx_complete = ioat2_is_complete;
device->cleanup_tasklet = ioat2_cleanup_tasklet;
dma->device_is_tx_complete = ioat_is_dma_complete;
device->cleanup_fn = ioat2_cleanup_event;
device->timer_fn = ioat2_timer_event;
}

2
drivers/dma/ioat/registers.h
View file

@ -60,7 +60,7 @@
#define IOAT_PERPORTOFFSET_OFFSET 0x0A /* 16-bit */
#define IOAT_INTRDELAY_OFFSET 0x0C /* 16-bit */
#define IOAT_INTRDELAY_INT_DELAY_MASK 0x3FFF /* Interrupt Delay Time */
#define IOAT_INTRDELAY_MASK 0x3FFF /* Interrupt Delay Time */
#define IOAT_INTRDELAY_COALESE_SUPPORT 0x8000 /* Interrupt Coalescing Supported */
#define IOAT_DEVICE_STATUS_OFFSET 0x0E /* 16-bit */

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