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authorPaul Mackerras <paulus@samba.org>2007-05-08 13:37:51 +1000
committerPaul Mackerras <paulus@samba.org>2007-05-08 13:37:51 +1000
commit02bbc0f09c90cefdb2837605c96a66c5ce4ba2e1 (patch)
tree04ef573cd4de095c500c9fc3477f4278c0b36300 /drivers/pci
parent7487a2245b8841c77ba9db406cf99a483b9334e9 (diff)
parent5b94f675f57e4ff16c8fda09088d7480a84dcd91 (diff)
Merge branch 'linux-2.6'
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/Kconfig31
-rw-r--r--drivers/pci/bus.c4
-rw-r--r--drivers/pci/hotplug/Kconfig25
-rw-r--r--drivers/pci/hotplug/acpiphp_ibm.c4
-rw-r--r--drivers/pci/hotplug/cpcihp_zt5550.c6
-rw-r--r--drivers/pci/hotplug/fakephp.c2
-rw-r--r--drivers/pci/hotplug/pci_hotplug_core.c4
-rw-r--r--drivers/pci/hotplug/pciehp.h19
-rw-r--r--drivers/pci/hotplug/pciehp_core.c82
-rw-r--r--drivers/pci/hotplug/pciehp_ctrl.c616
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c34
-rw-r--r--drivers/pci/hotplug/rpadlpar_core.c27
-rw-r--r--drivers/pci/hotplug/rpaphp.h8
-rw-r--r--drivers/pci/hotplug/rpaphp_core.c200
-rw-r--r--drivers/pci/hotplug/rpaphp_pci.c167
-rw-r--r--drivers/pci/hotplug/rpaphp_slot.c49
-rw-r--r--drivers/pci/hotplug/shpchp.h2
-rw-r--r--drivers/pci/hotplug/shpchp_core.c2
-rw-r--r--drivers/pci/hotplug/shpchp_ctrl.c2
-rw-r--r--drivers/pci/msi.c398
-rw-r--r--drivers/pci/pci-driver.c19
-rw-r--r--drivers/pci/pci-sysfs.c9
-rw-r--r--drivers/pci/pci.c34
-rw-r--r--drivers/pci/pci.h2
-rw-r--r--drivers/pci/probe.c42
-rw-r--r--drivers/pci/quirks.c2
-rw-r--r--drivers/pci/search.c3
-rw-r--r--drivers/pci/setup-bus.c21
-rw-r--r--drivers/pci/setup-res.c6
29 files changed, 791 insertions, 1029 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 5ea5bc70cb8..7a1d6d51283 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -1,10 +1,14 @@
#
# PCI configuration
#
+config ARCH_SUPPORTS_MSI
+ bool
+ default n
+
config PCI_MSI
bool "Message Signaled Interrupts (MSI and MSI-X)"
depends on PCI
- depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64 || SPARC64
+ depends on ARCH_SUPPORTS_MSI
help
This allows device drivers to enable MSI (Message Signaled
Interrupts). Message Signaled Interrupts enable a device to
@@ -17,31 +21,6 @@ config PCI_MSI
If you don't know what to do here, say N.
-config PCI_MULTITHREAD_PROBE
- bool "PCI Multi-threaded probe (EXPERIMENTAL)"
- depends on PCI && EXPERIMENTAL && BROKEN
- help
- Say Y here if you want the PCI core to spawn a new thread for
- every PCI device that is probed. This can cause a huge
- speedup in boot times on multiprocessor machines, and even a
- smaller speedup on single processor machines.
-
- But it can also cause lots of bad things to happen. A number
- of PCI drivers cannot properly handle running in this way,
- some will just not work properly at all, while others might
- decide to blow up power supplies with a huge load all at once,
- so use this option at your own risk.
-
- It is very unwise to use this option if you are not using a
- boot process that can handle devices being created in any
- order. A program that can create persistent block and network
- device names (like udev) is a good idea if you wish to use
- this option.
-
- Again, use this option at your own risk, you have been warned!
-
- When in doubt, say N.
-
config PCI_DEBUG
bool "PCI Debugging"
depends on PCI && DEBUG_KERNEL
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index aadaa3c8096..9e5ea074ad2 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -77,7 +77,7 @@ pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
* This adds a single pci device to the global
* device list and adds sysfs and procfs entries
*/
-int __devinit pci_bus_add_device(struct pci_dev *dev)
+int pci_bus_add_device(struct pci_dev *dev)
{
int retval;
retval = device_add(&dev->dev);
@@ -105,7 +105,7 @@ int __devinit pci_bus_add_device(struct pci_dev *dev)
*
* Call hotplug for each new devices.
*/
-void __devinit pci_bus_add_devices(struct pci_bus *bus)
+void pci_bus_add_devices(struct pci_bus *bus)
{
struct pci_dev *dev;
int retval;
diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig
index be92695a783..63d62752fb9 100644
--- a/drivers/pci/hotplug/Kconfig
+++ b/drivers/pci/hotplug/Kconfig
@@ -2,9 +2,7 @@
# PCI Hotplug support
#
-menu "PCI Hotplug Support"
-
-config HOTPLUG_PCI
+menuconfig HOTPLUG_PCI
tristate "Support for PCI Hotplug (EXPERIMENTAL)"
depends on PCI && EXPERIMENTAL && HOTPLUG
---help---
@@ -17,9 +15,10 @@ config HOTPLUG_PCI
When in doubt, say N.
+if HOTPLUG_PCI
+
config HOTPLUG_PCI_FAKE
tristate "Fake PCI Hotplug driver"
- depends on HOTPLUG_PCI
help
Say Y here if you want to use the fake PCI hotplug driver. It can
be used to simulate PCI hotplug events if even if your system is
@@ -42,7 +41,7 @@ config HOTPLUG_PCI_FAKE
config HOTPLUG_PCI_COMPAQ
tristate "Compaq PCI Hotplug driver"
- depends on HOTPLUG_PCI && X86 && PCI_BIOS
+ depends on X86 && PCI_BIOS
help
Say Y here if you have a motherboard with a Compaq PCI Hotplug
controller.
@@ -64,7 +63,7 @@ config HOTPLUG_PCI_COMPAQ_NVRAM
config HOTPLUG_PCI_IBM
tristate "IBM PCI Hotplug driver"
- depends on HOTPLUG_PCI && X86_IO_APIC && X86 && PCI_BIOS
+ depends on X86_IO_APIC && X86 && PCI_BIOS
help
Say Y here if you have a motherboard with a IBM PCI Hotplug
controller.
@@ -76,7 +75,6 @@ config HOTPLUG_PCI_IBM
config HOTPLUG_PCI_ACPI
tristate "ACPI PCI Hotplug driver"
- depends on HOTPLUG_PCI
depends on (!ACPI_DOCK && ACPI) || (ACPI_DOCK)
help
Say Y here if you have a system that supports PCI Hotplug using
@@ -101,7 +99,6 @@ config HOTPLUG_PCI_ACPI_IBM
config HOTPLUG_PCI_CPCI
bool "CompactPCI Hotplug driver"
- depends on HOTPLUG_PCI
help
Say Y here if you have a CompactPCI system card with CompactPCI
hotswap support per the PICMG 2.1 specification.
@@ -110,7 +107,7 @@ config HOTPLUG_PCI_CPCI
config HOTPLUG_PCI_CPCI_ZT5550
tristate "Ziatech ZT5550 CompactPCI Hotplug driver"
- depends on HOTPLUG_PCI && HOTPLUG_PCI_CPCI && X86
+ depends on HOTPLUG_PCI_CPCI && X86
help
Say Y here if you have an Performance Technologies (formerly Intel,
formerly just Ziatech) Ziatech ZT5550 CompactPCI system card.
@@ -122,7 +119,7 @@ config HOTPLUG_PCI_CPCI_ZT5550
config HOTPLUG_PCI_CPCI_GENERIC
tristate "Generic port I/O CompactPCI Hotplug driver"
- depends on HOTPLUG_PCI && HOTPLUG_PCI_CPCI && X86
+ depends on HOTPLUG_PCI_CPCI && X86
help
Say Y here if you have a CompactPCI system card that exposes the #ENUM
hotswap signal as a bit in a system register that can be read through
@@ -135,7 +132,6 @@ config HOTPLUG_PCI_CPCI_GENERIC
config HOTPLUG_PCI_SHPC
tristate "SHPC PCI Hotplug driver"
- depends on HOTPLUG_PCI
help
Say Y here if you have a motherboard with a SHPC PCI Hotplug
controller.
@@ -147,7 +143,7 @@ config HOTPLUG_PCI_SHPC
config HOTPLUG_PCI_RPA
tristate "RPA PCI Hotplug driver"
- depends on HOTPLUG_PCI && PPC_PSERIES && PPC64 && !HOTPLUG_PCI_FAKE
+ depends on PPC_PSERIES && PPC64 && !HOTPLUG_PCI_FAKE
help
Say Y here if you have a RPA system that supports PCI Hotplug.
@@ -170,12 +166,11 @@ config HOTPLUG_PCI_RPA_DLPAR
config HOTPLUG_PCI_SGI
tristate "SGI PCI Hotplug Support"
- depends on HOTPLUG_PCI && (IA64_SGI_SN2 || IA64_GENERIC)
+ depends on IA64_SGI_SN2 || IA64_GENERIC
help
Say Y here if you want to use the SGI Altix Hotplug
Driver for PCI devices.
When in doubt, say N.
-endmenu
-
+endif # HOTPLUG_PCI
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index 7f03881a8b6..e7322c25d37 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -424,7 +424,7 @@ static int __init ibm_acpiphp_init(void)
int retval = 0;
acpi_status status;
struct acpi_device *device;
- struct kobject *sysdir = &pci_hotplug_slots_subsys.kset.kobj;
+ struct kobject *sysdir = &pci_hotplug_slots_subsys.kobj;
dbg("%s\n", __FUNCTION__);
@@ -471,7 +471,7 @@ init_return:
static void __exit ibm_acpiphp_exit(void)
{
acpi_status status;
- struct kobject *sysdir = &pci_hotplug_slots_subsys.kset.kobj;
+ struct kobject *sysdir = &pci_hotplug_slots_subsys.kobj;
dbg("%s\n", __FUNCTION__);
diff --git a/drivers/pci/hotplug/cpcihp_zt5550.c b/drivers/pci/hotplug/cpcihp_zt5550.c
index 1c12e917109..41f6a8d79c8 100644
--- a/drivers/pci/hotplug/cpcihp_zt5550.c
+++ b/drivers/pci/hotplug/cpcihp_zt5550.c
@@ -296,13 +296,17 @@ static struct pci_driver zt5550_hc_driver = {
static int __init zt5550_init(void)
{
struct resource* r;
+ int rc;
info(DRIVER_DESC " version: " DRIVER_VERSION);
r = request_region(ENUM_PORT, 1, "#ENUM hotswap signal register");
if(!r)
return -EBUSY;
- return pci_register_driver(&zt5550_hc_driver);
+ rc = pci_register_driver(&zt5550_hc_driver);
+ if(rc < 0)
+ release_region(ENUM_PORT, 1);
+ return rc;
}
static void __exit
diff --git a/drivers/pci/hotplug/fakephp.c b/drivers/pci/hotplug/fakephp.c
index e27907c91d9..027f6865d7e 100644
--- a/drivers/pci/hotplug/fakephp.c
+++ b/drivers/pci/hotplug/fakephp.c
@@ -238,7 +238,7 @@ static void pci_rescan_bus(const struct pci_bus *bus)
{
unsigned int devfn;
struct pci_dev *dev;
- dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
+ dev = alloc_pci_dev();
if (!dev)
return;
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index f5d632e7232..63f3bd1eecc 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -62,7 +62,7 @@ static int debug;
static LIST_HEAD(pci_hotplug_slot_list);
-struct subsystem pci_hotplug_slots_subsys;
+struct kset pci_hotplug_slots_subsys;
static ssize_t hotplug_slot_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
@@ -764,7 +764,7 @@ static int __init pci_hotplug_init (void)
{
int result;
- kset_set_kset_s(&pci_hotplug_slots_subsys, pci_bus_type.subsys);
+ kobj_set_kset_s(&pci_hotplug_slots_subsys, pci_bus_type.subsys);
result = subsystem_register(&pci_hotplug_slots_subsys);
if (result) {
err("Register subsys with error %d\n", result);
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index d19fcae8a7c..ccc57627201 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -43,6 +43,7 @@ extern int pciehp_poll_mode;
extern int pciehp_poll_time;
extern int pciehp_debug;
extern int pciehp_force;
+extern struct workqueue_struct *pciehp_wq;
#define dbg(format, arg...) \
do { \
@@ -70,14 +71,16 @@ struct slot {
struct list_head slot_list;
char name[SLOT_NAME_SIZE];
unsigned long last_emi_toggle;
+ struct delayed_work work; /* work for button event */
+ struct mutex lock;
};
struct event_info {
u32 event_type;
- u8 hp_slot;
+ struct slot *p_slot;
+ struct work_struct work;
};
-#define MAX_EVENTS 10
struct controller {
struct controller *next;
struct mutex crit_sect; /* critical section mutex */
@@ -86,11 +89,9 @@ struct controller {
int slot_num_inc; /* 1 or -1 */
struct pci_dev *pci_dev;
struct list_head slot_list;
- struct event_info event_queue[MAX_EVENTS];
struct slot *slot;
struct hpc_ops *hpc_ops;
wait_queue_head_t queue; /* sleep & wake process */
- u8 next_event;
u8 bus;
u8 device;
u8 function;
@@ -149,21 +150,17 @@ struct controller {
#define HP_SUPR_RM(cap) (cap & HP_SUPR_RM_SUP)
#define EMI(cap) (cap & EMI_PRSN)
-extern int pciehp_event_start_thread(void);
-extern void pciehp_event_stop_thread(void);
-extern int pciehp_enable_slot(struct slot *slot);
-extern int pciehp_disable_slot(struct slot *slot);
+extern int pciehp_sysfs_enable_slot(struct slot *slot);
+extern int pciehp_sysfs_disable_slot(struct slot *slot);
extern u8 pciehp_handle_attention_button(u8 hp_slot, struct controller *ctrl);
extern u8 pciehp_handle_switch_change(u8 hp_slot, struct controller *ctrl);
extern u8 pciehp_handle_presence_change(u8 hp_slot, struct controller *ctrl);
extern u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl);
extern int pciehp_configure_device(struct slot *p_slot);
extern int pciehp_unconfigure_device(struct slot *p_slot);
+extern void pciehp_queue_pushbutton_work(struct work_struct *work);
int pcie_init(struct controller *ctrl, struct pcie_device *dev);
-/* Global variables */
-extern struct controller *pciehp_ctrl_list;
-
static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device)
{
struct slot *slot;
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index a92eda6e02f..e5d3f0b4f45 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -41,7 +41,7 @@ int pciehp_debug;
int pciehp_poll_mode;
int pciehp_poll_time;
int pciehp_force;
-struct controller *pciehp_ctrl_list;
+struct workqueue_struct *pciehp_wq;
#define DRIVER_VERSION "0.4"
#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
@@ -62,7 +62,6 @@ MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if _OSC and OSHP are missing"
#define PCIE_MODULE_NAME "pciehp"
-static int pcie_start_thread (void);
static int set_attention_status (struct hotplug_slot *slot, u8 value);
static int enable_slot (struct hotplug_slot *slot);
static int disable_slot (struct hotplug_slot *slot);
@@ -229,6 +228,8 @@ static int init_slots(struct controller *ctrl)
slot->device = ctrl->slot_device_offset + i;
slot->hpc_ops = ctrl->hpc_ops;
slot->number = ctrl->first_slot;
+ mutex_init(&slot->lock);
+ INIT_DELAYED_WORK(&slot->work, pciehp_queue_pushbutton_work);
/* register this slot with the hotplug pci core */
hotplug_slot->private = slot;
@@ -286,6 +287,9 @@ static void cleanup_slots(struct controller *ctrl)
if (EMI(ctrl->ctrlcap))
sysfs_remove_file(&slot->hotplug_slot->kobj,
&hotplug_slot_attr_lock.attr);
+ cancel_delayed_work(&slot->work);
+ flush_scheduled_work();
+ flush_workqueue(pciehp_wq);
pci_hp_deregister(slot->hotplug_slot);
}
}
@@ -314,7 +318,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
- return pciehp_enable_slot(slot);
+ return pciehp_sysfs_enable_slot(slot);
}
@@ -324,7 +328,7 @@ static int disable_slot(struct hotplug_slot *hotplug_slot)
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
- return pciehp_disable_slot(slot);
+ return pciehp_sysfs_disable_slot(slot);
}
static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
@@ -466,17 +470,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
- /* Finish setting up the hot plug ctrl device */
- ctrl->next_event = 0;
-
- if (!pciehp_ctrl_list) {
- pciehp_ctrl_list = ctrl;
- ctrl->next = NULL;
- } else {
- ctrl->next = pciehp_ctrl_list;
- pciehp_ctrl_list = ctrl;
- }
-
t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
if ((POWER_CTRL(ctrl->ctrlcap)) && !value) {
rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
@@ -496,48 +489,14 @@ err_out_none:
return -ENODEV;
}
-
-static int pcie_start_thread(void)
+static void pciehp_remove (struct pcie_device *dev)
{
- int retval = 0;
-
- dbg("Initialize + Start the notification/polling mechanism \n");
-
- retval = pciehp_event_start_thread();
- if (retval) {
- dbg("pciehp_event_start_thread() failed\n");
- return retval;
- }
-
- return retval;
-}
-
-static void __exit unload_pciehpd(void)
-{
- struct controller *ctrl;
- struct controller *tctrl;
-
- ctrl = pciehp_ctrl_list;
-
- while (ctrl) {
- cleanup_slots(ctrl);
+ struct pci_dev *pdev = dev->port;
+ struct controller *ctrl = pci_get_drvdata(pdev);
- ctrl->hpc_ops->release_ctlr(ctrl);
-
- tctrl = ctrl;
- ctrl = ctrl->next;
-
- kfree(tctrl);
- }
-
- /* Stop the notification mechanism */
- pciehp_event_stop_thread();
-
-}
-
-static void pciehp_remove (struct pcie_device *device)
-{
- /* XXX - Needs to be adapted to device driver model */
+ cleanup_slots(ctrl);
+ ctrl->hpc_ops->release_ctlr(ctrl);
+ kfree(ctrl);
}
#ifdef CONFIG_PM
@@ -585,31 +544,18 @@ static int __init pcied_init(void)
pciehp_poll_mode = 1;
#endif
- retval = pcie_start_thread();
- if (retval)
- goto error_hpc_init;
-
retval = pcie_port_service_register(&hpdriver_portdrv);
dbg("pcie_port_service_register = %d\n", retval);
info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
if (retval)
dbg("%s: Failure to register service\n", __FUNCTION__);
-
-error_hpc_init:
- if (retval) {
- pciehp_event_stop_thread();
- };
-
return retval;
}
static void __exit pcied_cleanup(void)
{
dbg("unload_pciehpd()\n");
- unload_pciehpd();
-
pcie_port_service_unregister(&hpdriver_portdrv);
-
info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
}
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 4283ef56dbd..7f22caa7017 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -32,92 +32,61 @@
#include <linux/types.h>
#include <linux/smp_lock.h>
#include <linux/pci.h>
+#include <linux/workqueue.h>
#include "../pci.h"
#include "pciehp.h"
-static void interrupt_event_handler(struct controller *ctrl);
+static void interrupt_event_handler(struct work_struct *work);
+static int pciehp_enable_slot(struct slot *p_slot);
+static int pciehp_disable_slot(struct slot *p_slot);
-static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
-static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */
-static int event_finished;
-static unsigned long pushbutton_pending; /* = 0 */
-static unsigned long surprise_rm_pending; /* = 0 */
-
-static inline char *slot_name(struct slot *p_slot)
+static int queue_interrupt_event(struct slot *p_slot, u32 event_type)
{
- return p_slot->hotplug_slot->name;
+ struct event_info *info;
+
+ info = kmalloc(sizeof(*info), GFP_ATOMIC);
+ if (!info)
+ return -ENOMEM;
+
+ info->event_type = event_type;
+ info->p_slot = p_slot;
+ INIT_WORK(&info->work, interrupt_event_handler);
+
+ schedule_work(&info->work);
+
+ return 0;
}
u8 pciehp_handle_attention_button(u8 hp_slot, struct controller *ctrl)
{
struct slot *p_slot;
- u8 rc = 0;
- u8 getstatus;
- struct event_info *taskInfo;
+ u32 event_type;
/* Attention Button Change */
dbg("pciehp: Attention button interrupt received.\n");
-
- /* This is the structure that tells the worker thread what to do */
- taskInfo = &(ctrl->event_queue[ctrl->next_event]);
- p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
-
- p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
-
- ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
- taskInfo->hp_slot = hp_slot;
- rc++;
+ p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
/*
* Button pressed - See if need to TAKE ACTION!!!
*/
- info("Button pressed on Slot(%s)\n", slot_name(p_slot));
- taskInfo->event_type = INT_BUTTON_PRESS;
-
- if ((p_slot->state == BLINKINGON_STATE)
- || (p_slot->state == BLINKINGOFF_STATE)) {
- /* Cancel if we are still blinking; this means that we press the
- * attention again before the 5 sec. limit expires to cancel hot-add
- * or hot-remove
- */
- taskInfo->event_type = INT_BUTTON_CANCEL;
- info("Button cancel on Slot(%s)\n", slot_name(p_slot));
- } else if ((p_slot->state == POWERON_STATE)
- || (p_slot->state == POWEROFF_STATE)) {
- /* Ignore if the slot is on power-on or power-off state; this
- * means that the previous attention button action to hot-add or
- * hot-remove is undergoing
- */
- taskInfo->event_type = INT_BUTTON_IGNORE;
- info("Button ignore on Slot(%s)\n", slot_name(p_slot));
- }
+ info("Button pressed on Slot(%s)\n", p_slot->name);
+ event_type = INT_BUTTON_PRESS;
- if (rc)
- up(&event_semaphore); /* signal event thread that new event is posted */
+ queue_interrupt_event(p_slot, event_type);
return 0;
-
}
u8 pciehp_handle_switch_change(u8 hp_slot, struct controller *ctrl)
{
struct slot *p_slot;
- u8 rc = 0;
u8 getstatus;
- struct event_info *taskInfo;
+ u32 event_type;
/* Switch Change */
dbg("pciehp: Switch interrupt received.\n");
- /* This is the structure that tells the worker thread
- * what to do
- */
- taskInfo = &(ctrl->event_queue[ctrl->next_event]);
- ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
- taskInfo->hp_slot = hp_slot;
-
- rc++;
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
@@ -125,39 +94,30 @@ u8 pciehp_handle_switch_change(u8 hp_slot, struct controller *ctrl)
/*
* Switch opened
*/
- info("Latch open on Slot(%s)\n", slot_name(p_slot));
- taskInfo->event_type = INT_SWITCH_OPEN;
+ info("Latch open on Slot(%s)\n", p_slot->name);
+ event_type = INT_SWITCH_OPEN;
} else {
/*
* Switch closed
*/
- info("Latch close on Slot(%s)\n", slot_name(p_slot));
- taskInfo->event_type = INT_SWITCH_CLOSE;
+ info("Latch close on Slot(%s)\n", p_slot->name);
+ event_type = INT_SWITCH_CLOSE;
}
- if (rc)
- up(&event_semaphore); /* signal event thread that new event is posted */
+ queue_interrupt_event(p_slot, event_type);
- return rc;
+ return 1;
}
u8 pciehp_handle_presence_change(u8 hp_slot, struct controller *ctrl)
{
struct slot *p_slot;
- u8 presence_save, rc = 0;
- struct event_info *taskInfo;
+ u32 event_type;
+ u8 presence_save;
/* Presence Change */
dbg("pciehp: Presence/Notify input change.\n");
- /* This is the structure that tells the worker thread
- * what to do
- */
- taskInfo = &(ctrl->event_queue[ctrl->next_event]);
- ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
- taskInfo->hp_slot = hp_slot;
-
- rc++;
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
/* Switch is open, assume a presence change
@@ -168,59 +128,49 @@ u8 pciehp_handle_presence_change(u8 hp_slot, struct controller *ctrl)
/*
* Card Present
*/
- info("Card present on Slot(%s)\n", slot_name(p_slot));
- taskInfo->event_type = INT_PRESENCE_ON;
+ info("Card present on Slot(%s)\n", p_slot->name);
+ event_type = INT_PRESENCE_ON;
} else {
/*
* Not Present
*/
- info("Card not present on Slot(%s)\n", slot_name(p_slot));
- taskInfo->event_type = INT_PRESENCE_OFF;
+ info("Card not present on Slot(%s)\n", p_slot->name);
+ event_type = INT_PRESENCE_OFF;
}
- if (rc)
- up(&event_semaphore); /* signal event thread that new event is posted */
+ queue_interrupt_event(p_slot, event_type);
- return rc;
+ return 1;
}
u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl)
{
struct slot *p_slot;
- u8 rc = 0;
- struct event_info *taskInfo;
+ u32 event_type;
/* power fault */
dbg("pciehp: Power fault interrupt received.\n");
- /* this is the structure that tells the worker thread
- * what to do
- */
- taskInfo = &(ctrl->event_queue[ctrl->next_event]);
- ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
- taskInfo->hp_slot = hp_slot;
-
- rc++;
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
/*
* power fault Cleared
*/
- info("Power fault cleared on Slot(%s)\n", slot_name(p_slot));
- taskInfo->event_type = INT_POWER_FAULT_CLEAR;
+ info("Power fault cleared on Slot(%s)\n", p_slot->name);
+ event_type = INT_POWER_FAULT_CLEAR;
} else {
/*
* power fault
*/
- info("Power fault on Slot(%s)\n", slot_name(p_slot));
- taskInfo->event_type = INT_POWER_FAULT;
+ info("Power fault on Slot(%s)\n", p_slot->name);
+ event_type = INT_POWER_FAULT;
info("power fault bit %x set\n", hp_slot);
}
- if (rc)
- up(&event_semaphore); /* signal event thread that new event is posted */
- return rc;
+ queue_interrupt_event(p_slot, event_type);
+
+ return 1;
}
/* The following routines constitute the bulk of the
@@ -357,13 +307,10 @@ static int remove_board(struct slot *p_slot)
return 0;
}
-
-static void pushbutton_helper_thread(unsigned long data)
-{
- pushbutton_pending = data;
-
- up(&event_semaphore);
-}
+struct power_work_info {
+ struct slot *p_slot;
+ struct work_struct work;
+};
/**
* pciehp_pushbutton_thread
@@ -372,276 +319,214 @@ static void pushbutton_helper_thread(unsigned long data)
* Handles all pending events and exits.
*
*/
-static void pciehp_pushbutton_thread(unsigned long slot)
+static void pciehp_power_thread(struct work_struct *work)
{
- struct slot *p_slot = (struct slot *) slot;
- u8 getstatus;
-
- pushbutton_pending = 0;
-
- if (!p_slot) {
- dbg("%s: Error! slot NULL\n", __FUNCTION__);
- return;
- }
-
- p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
- if (getstatus) {
- p_slot->state = POWEROFF_STATE;
- dbg("%s: disabling bus:device(%x:%x)\n", __FUNCTION__,
- p_slot->bus, p_slot->device);
-
+ struct power_work_info *info =
+ container_of(work, struct power_work_info, work);
+ struct slot *p_slot = info->p_slot;
+
+ mutex_lock(&p_slot->lock);
+ switch (p_slot->state) {
+ case POWEROFF_STATE:
+ mutex_unlock(&p_slot->lock);
+ dbg("%s: disabling bus:device(%x:%x)\n",
+ __FUNCTION__, p_slot->bus, p_slot->device);
pciehp_disable_slot(p_slot);
+ mutex_lock(&p_slot->lock);
p_slot->state = STATIC_STATE;
- } else {
- p_slot->state = POWERON_STATE;
- dbg("%s: adding bus:device(%x:%x)\n", __FUNCTION__,
- p_slot->bus, p_slot->device);
-
+ break;
+ case POWERON_STATE:
+ mutex_unlock(&p_slot->lock);
if (pciehp_enable_slot(p_slot) &&
PWR_LED(p_slot->ctrl->ctrlcap))
p_slot->hpc_ops->green_led_off(p_slot);
-
+ mutex_lock(&p_slot->lock);
p_slot->state = STATIC_STATE;
+ break;
+ default:
+ break;
}
+ mutex_unlock(&p_slot->lock);
- return;
+ kfree(info);
}
-/**
- * pciehp_surprise_rm_thread
- *
- * Scheduled procedure to handle blocking stuff for the surprise removal
- * Handles all pending events and exits.
- *
- */
-static void pciehp_surprise_rm_thread(unsigned long slot)
+void pciehp_queue_pushbutton_work(struct work_struct *work)
{
- struct slot *p_slot = (struct slot *) slot;
- u8 getstatus;
-
- surprise_rm_pending = 0;
+ struct slot *p_slot = container_of(work, struct slot, work.work);
+ struct power_work_info *info;
- if (!p_slot) {
- dbg("%s: Error! slot NULL\n", __FUNCTION__);
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ err("%s: Cannot allocate memory\n", __FUNCTION__);
return;
}
+ info->p_slot = p_slot;
+ INIT_WORK(&info->work, pciehp_power_thread);
- p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
- if (!getstatus) {
+ mutex_lock(&p_slot->lock);
+ switch (p_slot->state) {
+ case BLINKINGOFF_STATE:
p_slot->state = POWEROFF_STATE;
- dbg("%s: removing bus:device(%x:%x)\n",
- __FUNCTION__, p_slot->bus, p_slot->device);
-
- pciehp_disable_slot(p_slot);
- p_slot->state = STATIC_STATE;
- } else {
+ break;
+ case BLINKINGON_STATE:
p_slot->state = POWERON_STATE;
- dbg("%s: adding bus:device(%x:%x)\n",
- __FUNCTION__, p_slot->bus, p_slot->device);
-
- if (pciehp_enable_slot(p_slot) &&
- PWR_LED(p_slot->ctrl->ctrlcap))
- p_slot->hpc_ops->green_led_off(p_slot);
-
- p_slot->state = STATIC_STATE;
+ break;
+ default:
+ goto out;
}
-
- return;
+ queue_work(pciehp_wq, &info->work);
+ out:
+ mutex_unlock(&p_slot->lock);
}
-
-
-/* this is the main worker thread */
-static int event_thread(void* data)
-{
- struct controller *ctrl;
- lock_kernel();
- daemonize("pciehpd_event");
-
- unlock_kernel();
-
- while (1) {
- dbg("!!!!event_thread sleeping\n");
- down_interruptible (&event_semaphore);
- dbg("event_thread woken finished = %d\n", event_finished);
- if (event_finished || signal_pending(current))
- break;
- /* Do stuff here */
- if (pushbutton_pending)
- pciehp_pushbutton_thread(pushbutton_pending);
- else if (surprise_rm_pending)
- pciehp_surprise_rm_thread(surprise_rm_pending);
- else
- for (ctrl = pciehp_ctrl_list; ctrl; ctrl=ctrl->next)
- interrupt_event_handler(ctrl);
- }
- dbg("event_thread signals exit\n");
- up(&event_exit);
- return 0;
-}
-
-int pciehp_event_start_thread(void)
-{
- int pid;
-
- /* initialize our semaphores */
- init_MUTEX_LOCKED(&event_exit);
- event_finished=0;
-
- init_MUTEX_LOCKED(&event_semaphore);
- pid = kernel_thread(event_thread, NULL, 0);
-
- if (pid < 0) {
- err ("Can't start up our event thread\n");
- return -1;
- }
- return 0;
-}
-
-
-void pciehp_event_stop_thread(void)
-{
- event_finished = 1;
- up(&event_semaphore);
- down(&event_exit);
-}
-
-
static int update_slot_info(struct slot *slot)
{
struct hotplug_slot_info *info;
- /* char buffer[SLOT_NAME_SIZE]; */
int result;
- info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
- /* make_slot_name (&buffer[0], SLOT_NAME_SIZE, slot); */
-
slot->hpc_ops->get_power_status(slot, &(info->power_status));
slot->hpc_ops->get_attention_status(slot, &(info->attention_status));
slot->hpc_ops->get_latch_status(slot, &(info->latch_status));
slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status));
- /* result = pci_hp_change_slot_info(buffer, info); */
result = pci_hp_change_slot_info(slot->hotplug_slot, info);
kfree (info);
return result;
}
-static void interrupt_event_handler(struct controller *ctrl)
+/*
+ * Note: This function must be called with slot->lock held
+ */
+static void handle_button_press_event(struct slot *p_slot)
{
- int loop = 0;
- int change = 1;
- u8 hp_slot;
+ struct controller *ctrl = p_slot->ctrl;
u8 getstatus;
- struct slot *p_slot;
- while (change) {
- change = 0;
-
- for (loop = 0; loop < MAX_EVENTS; loop++) {
- if (ctrl->event_queue[loop].event_type != 0) {
- hp_slot = ctrl->event_queue[loop].hp_slot;
-
- p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
-
- if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) {
- dbg("button cancel\n");
- del_timer(&p_slot->task_event);
-
- switch (p_slot->state) {
- case BLINKINGOFF_STATE:
- if (PWR_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->green_led_on(p_slot);
-
- if (ATTN_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->set_attention_status(p_slot, 0);
- break;
- case BLINKINGON_STATE:
- if (PWR_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->green_led_off(p_slot);
-
- if (ATTN_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->set_attention_status(p_slot, 0);
- break;
- default:
- warn("Not a valid state\n");
- return;
- }
- info("PCI slot #%s - action canceled due to button press.\n", slot_name(p_slot));
- p_slot->state = STATIC_STATE;
- }
- /* ***********Button Pressed (No action on 1st press...) */
- else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) {
-
- if (ATTN_BUTTN(ctrl->ctrlcap)) {
- dbg("Button pressed\n");
- p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
- if (getstatus) {
- /* slot is on */
- dbg("slot is on\n");
- p_slot->state = BLINKINGOFF_STATE;
- info("PCI slot #%s - powering off due to button press.\n", slot_name(p_slot));
- } else {
- /* slot is off */
- dbg("slot is off\n");
- p_slot->state = BLINKINGON_STATE;
- info("PCI slot #%s - powering on due to button press.\n", slot_name(p_slot));
- }
-
- /* blink green LED and turn off amber */
- if (PWR_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->green_led_blink(p_slot);
-
- if (ATTN_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->set_attention_status(p_slot, 0);
-
- init_timer(&p_slot->task_event);
- p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */
- p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread;
- p_slot->task_event.data = (unsigned long) p_slot;
-
- add_timer(&p_slot->task_event);
- }
- }
- /***********POWER FAULT********************/
- else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
- if (POWER_CTRL(ctrl->ctrlcap)) {
- dbg("power fault\n");
- if (ATTN_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->set_attention_status(p_slot, 1);
-
- if (PWR_LED(ctrl->ctrlcap))
- p_slot->hpc_ops->green_led_off(p_slot);
- }
- }
- /***********SURPRISE REMOVAL********************/
- else if ((ctrl->event_queue[loop].event_type == INT_PRESENCE_ON) ||
- (ctrl->event_queue[loop].event_type == INT_PRESENCE_OFF)) {
- if (HP_SUPR_RM(ctrl->ctrlcap)) {
- dbg("Surprise Removal\n");
- if (p_slot) {
- surprise_rm_pending = (unsigned long) p_slot;
- up(&event_semaphore);
- update_slot_info(p_slot);
- }
- }
- } else {
- /* refresh notification */
- if (p_slot)
- update_slot_info(p_slot);
- }
-
- ctrl->event_queue[loop].event_type = 0;
-
- change = 1;
- }
- } /* End of FOR loop */
+ switch (p_slot->state) {
+ case STATIC_STATE:
+ p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
+ if (getstatus) {
+ p_slot->state = BLINKINGOFF_STATE;
+ info("PCI slot #%s - powering off due to button "
+ "press.\n", p_slot->name);
+ } else {
+ p_slot->state = BLINKINGON_STATE;
+ info("PCI slot #%s - powering on due to button "
+ "press.\n", p_slot->name);
+ }
+ /* blink green LED and turn off amber */
+ if (PWR_LED(ctrl->ctrlcap))
+ p_slot->hpc_ops->green_led_blink(p_slot);
+ if (ATTN_LED(ctrl->ctrlcap))
+ p_slot->hpc_ops->set_attention_status(p_slot, 0);
+
+ schedule_delayed_work(&p_slot->work, 5*HZ);
+ break;
+ case BLINKINGOFF_STATE:
+ case BLINKINGON_STATE:
+ /*
+ * Cancel if we are still blinking; this means that we
+ * press the attention again before the 5 sec. limit
+ * expires to cancel hot-add or hot-remove
+ */
+ info("Button cancel on Slot(%s)\n", p_slot->name);
+ dbg("%s: button cancel\n", __FUNCTION__);
+ cancel_delayed_work(&p_slot->work);
+ if (p_slot->state == BLINKINGOFF_STATE) {
+ if (PWR_LED(ctrl->ctrlcap))
+ p_slot->hpc_ops->green_led_on(p_slot);
+ } else {
+ if (PWR_LED(ctrl->ctrlcap))
+ p_slot->hpc_ops->green_led_off(p_slot);
+ }
+ if (ATTN_LED(ctrl->ctrlcap))
+ p_slot->hpc_ops->set_attention_status(p_slot, 0);
+ info("PCI slot #%s - action canceled due to button press\n",
+ p_slot->name);
+ p_slot->state = STATIC_STATE;
+ break;
+ case POWEROFF_STATE:
+ case POWERON_STATE:
+ /*
+ * Ignore if the slot is on power-on or power-off state;
+ * this means that the previous attention button action
+ * to hot-add or hot-remove is undergoing
+ */
+ info("Button ignore on Slot(%s)\n", p_slot->name);
+ update_slot_info(p_slot);
+ break;
+ default:
+ warn("Not a valid state\n");
+ break;
}
}
+/*
+ * Note: This function must be called with slot->lock held
+ */
+static void handle_surprise_event(struct slot *p_slot)
+{
+ u8 getstatus;
+ struct power_work_info *info;
+
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ err("%s: Cannot allocate memory\n", __FUNCTION__);
+ return;
+ }
+ info->p_slot = p_slot;
+ INIT_WORK(&info->work, pciehp_power_thread);
+
+ p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
+ if (!getstatus)
+ p_slot->state = POWEROFF_STATE;
+ else
+ p_slot->state = POWERON_STATE;
+
+ queue_work(pciehp_wq, &info->work);
+}
+
+static void interrupt_event_handler(struct work_struct *work)
+{
+ struct event_info *info = container_of(work, struct event_info, work);
+ struct slot *p_slot = info->p_slot;
+ struct controller *ctrl = p_slot->ctrl;
+
+ mutex_lock(&p_slot->lock);
+ switch (info->event_type) {
+ case INT_BUTTON_PRESS:
+ handle_button_press_event(p_slot);
+ break;
+ case INT_POWER_FAULT:
+ if (!POWER_CTRL(ctrl->ctrlcap))
+ break;
+ if (ATTN_LED(ctrl->ctrlcap))
+ p_slot->hpc_ops->set_attention_status(p_slot, 1);
+ if (PWR_LED(ctrl->ctrlcap))
+ p_slot->hpc_ops->green_led_off(p_slot);
+ break;
+ case INT_PRESENCE_ON:
+ case INT_PRESENCE_OFF:
+ if (!HP_SUPR_RM(ctrl->ctrlcap))
+ break;
+ dbg("Surprise Removal\n");
+ update_slot_info(p_slot);
+ handle_surprise_event(p_slot);
+ break;
+ default:
+ update_slot_info(p_slot);
+ break;
+ }
+ mutex_unlock(&p_slot->lock);
+
+ kfree(info);
+}
+
int pciehp_enable_slot(struct slot *p_slot)
{
u8 getstatus = 0;
@@ -653,7 +538,7 @@ int pciehp_enable_slot(struct slot *p_slot)
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
if (rc || !getstatus) {
info("%s: no adapter on slot(%s)\n", __FUNCTION__,
- slot_name(p_slot));
+ p_slot->name);
mutex_unlock(&p_slot->ctrl->crit_sect);
return -ENODEV;
}
@@ -661,7 +546,7 @@ int pciehp_enable_slot(struct slot *p_slot)
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
if (rc || getstatus) {
info("%s: latch open on slot(%s)\n", __FUNCTION__,
- slot_name(p_slot));
+ p_slot->name);
mutex_unlock(&p_slot->ctrl->crit_sect);
return -ENODEV;
}
@@ -671,7 +556,7 @@ int pciehp_enable_slot(struct slot *p_slot)
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (rc || getstatus) {
info("%s: already enabled on slot(%s)\n", __FUNCTION__,
- slot_name(p_slot));
+ p_slot->name);
mutex_unlock(&p_slot->ctrl->crit_sect);
return -EINVAL;
}
@@ -706,7 +591,7 @@ int pciehp_disable_slot(struct slot *p_slot)
ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
if (ret || !getstatus) {
info("%s: no adapter on slot(%s)\n", __FUNCTION__,
- slot_name(p_slot));
+ p_slot->name);
mutex_unlock(&p_slot->ctrl->crit_sect);
return -ENODEV;
}
@@ -716,7 +601,7 @@ int pciehp_disable_slot(struct slot *p_slot)
ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
if (ret || getstatus) {
info("%s: latch open on slot(%s)\n", __FUNCTION__,
- slot_name(p_slot));
+ p_slot->name);
mutex_unlock(&p_slot->ctrl->crit_sect);
return -ENODEV;
}
@@ -726,7 +611,7 @@ int pciehp_disable_slot(struct slot *p_slot)
ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (ret || !getstatus) {
info("%s: already disabled slot(%s)\n", __FUNCTION__,
- slot_name(p_slot));
+ p_slot->name);
mutex_unlock(&p_slot->ctrl->crit_sect);
return -EINVAL;
}
@@ -739,3 +624,66 @@ int pciehp_disable_slot(struct slot *p_slot)
return ret;
}
+int pciehp_sysfs_enable_slot(struct slot *p_slot)
+{
+ int retval = -ENODEV;
+
+ mutex_lock(&p_slot->lock);
+ switch (p_slot->state) {
+ case BLINKINGON_STATE:
+ cancel_delayed_work(&p_slot->work);
+ case STATIC_STATE:
+ p_slot->state = POWERON_STATE;
+ mutex_unlock(&p_slot->lock);
+ retval = pciehp_enable_slot(p_slot);
+ mutex_lock(&p_slot->lock);
+ p_slot->state = STATIC_STATE;
+ break;
+ case POWERON_STATE:
+ info("Slot %s is already in powering on state\n",
+ p_slot->name);
+ break;
+ case BLINKINGOFF_STATE:
+ case POWEROFF_STATE:
+ info("Already enabled on slot %s\n", p_slot->name);
+ break;
+ default:
+ err("Not a valid state on slot %s\n", p_slot->name);
+ break;
+ }
+ mutex_unlock(&p_slot->lock);
+
+ return retval;
+}
+
+int pciehp_sysfs_disable_slot(struct slot *p_slot)
+{
+ int retval = -ENODEV;
+
+ mutex_lock(&p_slot->lock);
+ switch (p_slot->state) {
+ case BLINKINGOFF_STATE:
+ cancel_delayed_work(&p_slot->work);
+ case STATIC_STATE:
+ p_slot->state = POWEROFF_STATE;
+ mutex_unlock(&p_slot->lock);
+ retval = pciehp_disable_slot(p_slot);
+ mutex_lock(&p_slot->lock);
+ p_slot->state = STATIC_STATE;
+ break;
+ case POWEROFF_STATE:
+ info("Slot %s is already in powering off state\n",
+ p_slot->name);
+ break;
+ case BLINKINGON_STATE:
+ case POWERON_STATE:
+ info("Already disabled on slot %s\n", p_slot->name);
+ break;
+ default:
+ err("Not a valid state on slot %s\n", p_slot->name);
+ break;
+ }
+ mutex_unlock(&p_slot->lock);
+
+ return retval;
+}
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index fbc64aa2dd6..9aac6a87eb5 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -71,6 +71,8 @@
#define DBG_LEAVE_ROUTINE
#endif /* DEBUG */
+static atomic_t pciehp_num_controllers = ATOMIC_INIT(0);
+
struct ctrl_reg {
u8 cap_id;
u8 nxt_ptr;
@@ -219,10 +221,7 @@ static inline int pciehp_writel(struct controller *ctrl, int reg, u32 value)
#define EMI_STATE 0x0080
#define EMI_STATUS_BIT 7
-static spinlock_t hpc_event_lock;
-
DEFINE_DBG_BUFFER /* Debug string buffer for entire HPC defined here */
-static int ctlr_seq_num = 0; /* Controller sequence # */
static irqreturn_t pcie_isr(int irq, void *dev_id);
static void start_int_poll_timer(struct controller *ctrl, int sec);
@@ -656,6 +655,13 @@ static void hpc_release_ctlr(struct controller *ctrl)
else
free_irq(ctrl->pci_dev->irq, ctrl);
+ /*
+ * If this is the last controller to be released, destroy the
+ * pciehp work queue
+ */
+ if (atomic_dec_and_test(&pciehp_num_controllers))
+ destroy_workqueue(pciehp_wq);
+
DBG_LEAVE_ROUTINE
}
@@ -1152,7 +1158,6 @@ int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
int pcie_init(struct controller * ctrl, struct pcie_device *dev)
{
int rc;
- static int first = 1;
u16 temp_word;
u16 cap_reg;
u16 intr_enable = 0;
@@ -1221,11 +1226,6 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
dbg("%s: SLOTCTRL offset %x slot_ctrl %x\n",
__FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_ctrl);
- if (first) {
- spin_lock_init(&hpc_event_lock);
- first = 0;
- }
-
for ( rc = 0; rc < DEVICE_COUNT_RESOURCE; rc++)
if (pci_resource_len(pdev, rc) > 0)
dbg("pci resource[%d] start=0x%llx(len=0x%llx)\n", rc,
@@ -1286,7 +1286,8 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
rc = request_irq(ctrl->pci_dev->irq, pcie_isr, IRQF_SHARED,
MY_NAME, (void *)ctrl);
dbg("%s: request_irq %d for hpc%d (returns %d)\n",
- __FUNCTION__, ctrl->pci_dev->irq, ctlr_seq_num, rc);
+ __FUNCTION__, ctrl->pci_dev->irq,
+ atomic_read(&pciehp_num_controllers), rc);
if (rc) {
err("Can't get irq %d for the hotplug controller\n",
ctrl->pci_dev->irq);
@@ -1296,6 +1297,18 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
dbg("pciehp ctrl b:d:f:irq=0x%x:%x:%x:%x\n", pdev->bus->number,
PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), dev->irq);
+ /*
+ * If this is the first controller to be initialized,
+ * initialize the pciehp work queue
+ */
+ if (atomic_add_return(1, &pciehp_num_controllers) == 1) {
+ pciehp_wq = create_singlethread_workqueue("pciehpd");
+ if (!pciehp_wq) {
+ rc = -ENOMEM;
+ goto abort_free_irq;
+ }
+ }
+
rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
if (rc) {
err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
@@ -1349,7 +1362,6 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
goto abort_disable_intr;
}
- ctlr_seq_num++;
ctrl->hpc_ops = &pciehp_hpc_ops;
DBG_LEAVE_ROUTINE
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index 72383467a0d..bb3c101c2c5 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -98,7 +98,15 @@ static struct device_node *find_dlpar_node(char *drc_name, int *node_type)
return NULL;
}
-static struct slot *find_slot(struct device_node *dn)
+/**
+ * find_php_slot - return hotplug slot structure for device node
+ *
+ * This routine will return the hotplug slot structure
+ * for a given device node. Note that built-in PCI slots
+ * may be dlpar-able, but not hot-pluggable, so this routine
+ * will return NULL for built-in PCI slots.
+ */
+static struct slot *find_php_slot(struct device_node *dn)
{
struct list_head *tmp, *n;
struct slot *slot;
@@ -224,9 +232,9 @@ static int dlpar_remove_phb(char *drc_name, struct device_node *dn)
if (!pcibios_find_pci_bus(dn))
return -EINVAL;
- slot = find_slot(dn);
+ /* If pci slot is hotplugable, use hotplug to remove it */
+ slot = find_php_slot(dn);
if (slot) {
- /* Remove hotplug slot */
if (rpaphp_deregister_slot(slot)) {
printk(KERN_ERR
"%s: unable to remove hotplug slot %s\n",
@@ -370,22 +378,17 @@ int dlpar_remove_pci_slot(char *drc_name, struct device_node *dn)
if (!bus)
return -EINVAL;
- slot = find_slot(dn);
+ /* If pci slot is hotplugable, use hotplug to remove it */
+ slot = find_php_slot(dn);
if (slot) {
- /* Remove hotplug slot */
if (rpaphp_deregister_slot(slot)) {
printk(KERN_ERR
"%s: unable to remove hotplug slot %s\n",
__FUNCTION__, drc_name);
return -EIO;
}
- } else {
- struct pci_dev *dev, *tmp;
- list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) {
- eeh_remove_bus_device(dev);
- pci_remove_bus_device(dev);
- }
- }
+ } else
+ pcibios_remove_pci_devices(bus);
if (unmap_bus_range(bus)) {
printk(KERN_ERR "%s: failed to unmap bus range\n",
diff --git a/drivers/pci/hotplug/rpaphp.h b/drivers/pci/hotplug/rpaphp.h
index 2e7accf0f73..c822a779653 100644
--- a/drivers/pci/hotplug/rpaphp.h
+++ b/drivers/pci/hotplug/rpaphp.h
@@ -83,19 +83,15 @@ struct slot {
extern struct hotplug_slot_ops rpaphp_hotplug_slot_ops;
extern struct list_head rpaphp_slot_head;
-extern int num_slots;
/* function prototypes */
/* rpaphp_pci.c */
-extern int rpaphp_enable_pci_slot(struct slot *slot);
-extern int rpaphp_register_pci_slot(struct slot *slot);
-extern int rpaphp_get_pci_adapter_status(struct slot *slot, int is_init, u8 * value);
+extern int rpaphp_enable_slot(struct slot *slot);
extern int rpaphp_get_sensor_state(struct slot *slot, int *state);
/* rpaphp_core.c */
extern int rpaphp_add_slot(struct device_node *dn);
-extern int rpaphp_remove_slot(struct slot *slot);
extern int rpaphp_get_drc_props(struct device_node *dn, int *drc_index,
char **drc_name, char **drc_type, int *drc_power_domain);
@@ -104,7 +100,5 @@ extern void dealloc_slot_struct(struct slot *slot);
extern struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
extern int rpaphp_register_slot(struct slot *slot);
extern int rpaphp_deregister_slot(struct slot *slot);
-extern int rpaphp_get_power_status(struct slot *slot, u8 * value);
-extern int rpaphp_set_attention_status(struct slot *slot, u8 status);
#endif /* _PPC64PHP_H */
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index 353da5b296e..899eed00274 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -39,9 +39,7 @@
#include "rpaphp.h"
int debug;
-static struct semaphore rpaphp_sem;
LIST_HEAD(rpaphp_slot_head);
-int num_slots;
#define DRIVER_VERSION "0.1"
#define DRIVER_AUTHOR "Linda Xie <lxie@us.ibm.com>"
@@ -55,11 +53,6 @@ MODULE_LICENSE("GPL");
module_param(debug, bool, 0644);
-static int rpaphp_get_attention_status(struct slot *slot)
-{
- return slot->hotplug_slot->info->attention_status;
-}
-
/**
* set_attention_status - set attention LED
* echo 0 > attention -- set LED OFF
@@ -69,79 +62,75 @@ static int rpaphp_get_attention_status(struct slot *slot)
*/
static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value)
{
- int retval = 0;
+ int rc;
struct slot *slot = (struct slot *)hotplug_slot->private;
- down(&rpaphp_sem);
switch (value) {
case 0:
- retval = rpaphp_set_attention_status(slot, LED_OFF);
- hotplug_slot->info->attention_status = 0;
- break;
case 1:
- default:
- retval = rpaphp_set_attention_status(slot, LED_ON);
- hotplug_slot->info->attention_status = 1;
- break;
case 2:
- retval = rpaphp_set_attention_status(slot, LED_ID);
- hotplug_slot->info->attention_status = 2;
+ break;
+ default:
+ value = 1;
break;
}
- up(&rpaphp_sem);
- return retval;
+
+ rc = rtas_set_indicator(DR_INDICATOR, slot->index, value);
+ if (!rc)
+ hotplug_slot->info->attention_status = value;
+
+ return rc;
}
/**
* get_power_status - get power status of a slot
* @hotplug_slot: slot to get status
* @value: pointer to store status
- *
- *
*/
static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value)
{
- int retval;
+ int retval, level;
struct slot *slot = (struct slot *)hotplug_slot->private;
- down(&rpaphp_sem);
- retval = rpaphp_get_power_status(slot, value);
- up(&rpaphp_sem);
+ retval = rtas_get_power_level (slot->power_domain, &level);
+ if (!retval)
+ *value = level;
return retval;
}
/**
* get_attention_status - get attention LED status
- *
- *
*/
static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 * value)
{
- int retval = 0;
struct slot *slot = (struct slot *)hotplug_slot->private;
-
- down(&rpaphp_sem);
- *value = rpaphp_get_attention_status(slot);
- up(&rpaphp_sem);
- return retval;
+ *value = slot->hotplug_slot->info->attention_status;
+ return 0;
}
static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 * value)
{
struct slot *slot = (struct slot *)hotplug_slot->private;
- int retval = 0;
+ int rc, state;
- down(&rpaphp_sem);
- retval = rpaphp_get_pci_adapter_status(slot, 0, value);
- up(&rpaphp_sem);
- return retval;
+ rc = rpaphp_get_sensor_state(slot, &state);
+
+ *value = NOT_VALID;
+ if (rc)
+ return rc;
+
+ if (state == EMPTY)
+ *value = EMPTY;
+ else if (state == PRESENT)
+ *value = slot->state;
+
+ return 0;
}
static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
{
struct slot *slot = (struct slot *)hotplug_slot->private;
- down(&rpaphp_sem);
switch (slot->type) {
case 1:
case 2:
@@ -172,7 +161,6 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
break;
}
- up(&rpaphp_sem);
return 0;
}
@@ -265,6 +253,14 @@ static int is_php_type(char *drc_type)
return 1;
}
+/**
+ * is_php_dn() - return 1 if this is a hotpluggable pci slot, else 0
+ *
+ * This routine will return true only if the device node is
+ * a hotpluggable slot. This routine will return false
+ * for built-in pci slots (even when the built-in slots are
+ * dlparable.)
+ */
static int is_php_dn(struct device_node *dn, const int **indexes,
const int **names, const int **types, const int **power_domains)
{
@@ -272,24 +268,31 @@ static int is_php_dn(struct device_node *dn, const int **indexes,
int rc;
rc = get_children_props(dn, indexes, names, &drc_types, power_domains);
- if (rc >= 0) {
- if (is_php_type((char *) &drc_types[1])) {
- *types = drc_types;
- return 1;
- }
- }
+ if (rc < 0)
+ return 0;
- return 0;
+ if (!is_php_type((char *) &drc_types[1]))
+ return 0;
+
+ *types = drc_types;
+ return 1;
}
/**
- * rpaphp_add_slot -- add hotplug or dlpar slot
+ * rpaphp_add_slot -- declare a hotplug slot to the hotplug subsystem.
+ * @dn device node of slot
+ *
+ * This subroutine will register a hotplugable slot with the
+ * PCI hotplug infrastructure. This routine is typicaly called
+ * during boot time, if the hotplug slots are present at boot time,
+ * or is called later, by the dlpar add code, if the slot is
+ * being dynamically added during runtime.
+ *
+ * If the device node points at an embedded (built-in) slot, this
+ * routine will just return without doing anything, since embedded
+ * slots cannot be hotplugged.
*
- * rpaphp not only registers PCI hotplug slots(HOTPLUG),
- * but also logical DR slots(EMBEDDED).
- * HOTPLUG slot: An adapter can be physically added/removed.
- * EMBEDDED slot: An adapter can be logically removed/added
- * from/to a partition with the slot.
+ * To remove a slot, it suffices to call rpaphp_deregister_slot()
*/
int rpaphp_add_slot(struct device_node *dn)
{
@@ -299,34 +302,42 @@ int rpaphp_add_slot(struct device_node *dn)
const int *indexes, *names, *types, *power_domains;
char *name, *type;
+ if (!dn->name || strcmp(dn->name, "pci"))
+ return 0;
+
+ /* If this is not a hotplug slot, return without doing anything. */
+ if (!is_php_dn(dn, &indexes, &names, &types, &power_domains))
+ return 0;
+
dbg("Entry %s: dn->full_name=%s\n", __FUNCTION__, dn->full_name);
/* register PCI devices */
- if (dn->name != 0 && strcmp(dn->name, "pci") == 0) {
- if (!is_php_dn(dn, &indexes, &names, &types, &power_domains))
- goto exit;
-
- name = (char *) &names[1];
- type = (char *) &types[1];
- for (i = 0; i < indexes[0]; i++,
- name += (strlen(name) + 1), type += (strlen(type) + 1)) {
-
- if (!(slot = alloc_slot_struct(dn, indexes[i + 1], name,
- power_domains[i + 1]))) {
- retval = -ENOMEM;
- goto exit;
- }
- slot->type = simple_strtoul(type, NULL, 10);
+ name = (char *) &names[1];
+ type = (char *) &types[1];
+ for (i = 0; i < indexes[0]; i++) {
+
+ slot = alloc_slot_struct(dn, indexes[i + 1], name, power_domains[i + 1]);
+ if (!slot)
+ return -ENOMEM;
+
+ slot->type = simple_strtoul(type, NULL, 10);
- dbg("Found drc-index:0x%x drc-name:%s drc-type:%s\n",
- indexes[i + 1], name, type);
+ dbg("Found drc-index:0x%x drc-name:%s drc-type:%s\n",
+ indexes[i + 1], name, type);
- retval = rpaphp_register_pci_slot(slot);
- }
+ retval = rpaphp_enable_slot(slot);
+ if (!retval)
+ retval = rpaphp_register_slot(slot);
+
+ if (retval)
+ dealloc_slot_struct(slot);
+
+ name += strlen(name) + 1;
+ type += strlen(type) + 1;
}
-exit:
- dbg("%s - Exit: num_slots=%d rc[%d]\n",
- __FUNCTION__, num_slots, retval);
+ dbg("%s - Exit: rc[%d]\n", __FUNCTION__, retval);
+
+ /* XXX FIXME: reports a failure only if last entry in loop failed */
return retval;
}
@@ -354,7 +365,6 @@ static int __init rpaphp_init(void)
struct device_node *dn = NULL;
info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
- init_MUTEX(&rpaphp_sem);
while ((dn = of_find_node_by_name(dn, "pci")))
rpaphp_add_slot(dn);
@@ -367,8 +377,9 @@ static void __exit rpaphp_exit(void)
cleanup_slots();
}
-static int __enable_slot(struct slot *slot)
+static int enable_slot(struct hotplug_slot *hotplug_slot)
{
+ struct slot *slot = (struct slot *)hotplug_slot->private;
int state;
int retval;
@@ -392,46 +403,17 @@ static int __enable_slot(struct slot *slot)
return 0;
}
-static int enable_slot(struct hotplug_slot *hotplug_slot)
+static int disable_slot(struct hotplug_slot *hotplug_slot)
{
- int retval;
struct slot *slot = (struct slot *)hotplug_slot->private;
-
- down(&rpaphp_sem);
- retval = __enable_slot(slot);
- up(&rpaphp_sem);
-
- return retval;
-}
-
-static int __disable_slot(struct slot *slot)
-{
- struct pci_dev *dev, *tmp;
-
if (slot->state == NOT_CONFIGURED)
return -EINVAL;
- list_for_each_entry_safe(dev, tmp, &slot->bus->devices, bus_list) {
- eeh_remove_bus_device(dev);
- pci_remove_bus_device(dev);
- }
-
+ pcibios_remove_pci_devices(slot->bus);
slot->state = NOT_CONFIGURED;
return 0;
}
-static int disable_slot(struct hotplug_slot *hotplug_slot)
-{
- struct slot *slot = (struct slot *)hotplug_slot->private;
- int retval;
-
- down(&rpaphp_sem);
- retval = __disable_slot (slot);
- up(&rpaphp_sem);
-
- return retval;
-}
-
struct hotplug_slot_ops rpaphp_hotplug_slot_ops = {
.owner = THIS_MODULE,
.enable_slot = enable_slot,
diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c
index 6f6cbede513..54ca8650d51 100644
--- a/drivers/pci/hotplug/rpaphp_pci.c
+++ b/drivers/pci/hotplug/rpaphp_pci.c
@@ -64,75 +64,6 @@ int rpaphp_get_sensor_state(struct slot *slot, int *state)
return rc;
}
-/**
- * get_pci_adapter_status - get the status of a slot
- *
- * 0-- slot is empty
- * 1-- adapter is configured
- * 2-- adapter is not configured
- * 3-- not valid
- */
-int rpaphp_get_pci_adapter_status(struct slot *slot, int is_init, u8 * value)
-{
- struct pci_bus *bus;
- int state, rc;
-
- *value = NOT_VALID;
- rc = rpaphp_get_sensor_state(slot, &state);
- if (rc)
- goto exit;
-
- if (state == EMPTY)
- *value = EMPTY;
- else if (state == PRESENT) {
- if (!is_init) {
- /* at run-time slot->state can be changed by */
- /* config/unconfig adapter */
- *value = slot->state;
- } else {
- bus = pcibios_find_pci_bus(slot->dn);
- if (bus && !list_empty(&bus->devices))
- *value = CONFIGURED;
- else
- *value = NOT_CONFIGURED;
- }
- }
-exit:
- return rc;
-}
-
-static void print_slot_pci_funcs(struct pci_bus *bus)
-{
- struct device_node *dn;
- struct pci_dev *dev;
-
- dn = pci_bus_to_OF_node(bus);
- if (!dn)
- return;
-
- dbg("%s: pci_devs of slot[%s]\n", __FUNCTION__, dn->full_name);
- list_for_each_entry (dev, &bus->devices, bus_list)
- dbg("\t%s\n", pci_name(dev));
- return;
-}
-
-static int setup_pci_hotplug_slot_info(struct slot *slot)
-{
- struct hotplug_slot_info *hotplug_slot_info = slot->hotplug_slot->info;
-
- dbg("%s Initilize the PCI slot's hotplug->info structure ...\n",
- __FUNCTION__);
- rpaphp_get_power_status(slot, &hotplug_slot_info->power_status);
- rpaphp_get_pci_adapter_status(slot, 1,
- &hotplug_slot_info->adapter_status);
- if (hotplug_slot_info->adapter_status == NOT_VALID) {
- err("%s: NOT_VALID: skip dn->full_name=%s\n",
- __FUNCTION__, slot->dn->full_name);
- return -EINVAL;
- }
- return 0;
-}
-
static void set_slot_name(struct slot *slot)
{
struct pci_bus *bus = slot->bus;
@@ -146,69 +77,73 @@ static void set_slot_name(struct slot *slot)
bus->number);
}
-static int setup_pci_slot(struct slot *slot)
+/**
+ * rpaphp_enable_slot - record slot state, config pci device
+ *
+ * Initialize values in the slot, and the hotplug_slot info
+ * structures to indicate if there is a pci card plugged into
+ * the slot. If the slot is not empty, run the pcibios routine
+ * to get pcibios stuff correctly set up.
+ */
+int rpaphp_enable_slot(struct slot *slot)
{
- struct device_node *dn = slot->dn;
+ int rc, level, state;
struct pci_bus *bus;
+ struct hotplug_slot_info *info = slot->hotplug_slot->info;
+
+ info->adapter_status = NOT_VALID;
+ slot->state = EMPTY;
+
+ /* Find out if the power is turned on for the slot */
+ rc = rtas_get_power_level(slot->power_domain, &level);
+ if (rc)
+ return rc;
+ info->power_status = level;
+
+ /* Figure out if there is an adapter in the slot */
+ rc = rpaphp_get_sensor_state(slot, &state);
+ if (rc)
+ return rc;
- BUG_ON(!dn);
- bus = pcibios_find_pci_bus(dn);
+ bus = pcibios_find_pci_bus(slot->dn);
if (!bus) {
- err("%s: no pci_bus for dn %s\n", __FUNCTION__, dn->full_name);
- goto exit_rc;
+ err("%s: no pci_bus for dn %s\n", __FUNCTION__, slot->dn->full_name);
+ return -EINVAL;
}
+ info->adapter_status = EMPTY;
slot->bus = bus;
slot->pci_devs = &bus->devices;
set_slot_name(slot);
- /* find slot's pci_dev if it's not empty */
- if (slot->hotplug_slot->info->adapter_status == EMPTY) {
- slot->state = EMPTY; /* slot is empty */
- } else {
- /* slot is occupied */
- if (!dn->child) {
- /* non-empty slot has to have child */
- err("%s: slot[%s]'s device_node doesn't have child for adapter\n",
- __FUNCTION__, slot->name);
- goto exit_rc;
+ /* if there's an adapter in the slot, go add the pci devices */
+ if (state == PRESENT) {
+ info->adapter_status = NOT_CONFIGURED;
+ slot->state = NOT_CONFIGURED;
+
+ /* non-empty slot has to have child */
+ if (!slot->dn->child) {
+ err("%s: slot[%s]'s device_node doesn't have child for adapter\n",
+ __FUNCTION__, slot->name);
+ return -EINVAL;
}
- if (slot->hotplug_slot->info->adapter_status == NOT_CONFIGURED) {
- dbg("%s CONFIGURING pci adapter in slot[%s]\n",
- __FUNCTION__, slot->name);
- pcibios_add_pci_devices(slot->bus);
+ if (list_empty(&bus->devices))
+ pcibios_add_pci_devices(bus);
- } else if (slot->hotplug_slot->info->adapter_status != CONFIGURED) {
- err("%s: slot[%s]'s adapter_status is NOT_VALID.\n",
- __FUNCTION__, slot->name);
- goto exit_rc;
- }
- print_slot_pci_funcs(slot->bus);
- if (!list_empty(slot->pci_devs)) {
+ if (!list_empty(&bus->devices)) {
+ info->adapter_status = CONFIGURED;
slot->state = CONFIGURED;
- } else {
- /* DLPAR add as opposed to
- * boot time */
- slot->state = NOT_CONFIGURED;
+ }
+
+ if (debug) {
+ struct pci_dev *dev;
+ dbg("%s: pci_devs of slot[%s]\n", __FUNCTION__, slot->dn->full_name);
+ list_for_each_entry (dev, &bus->devices, bus_list)
+ dbg("\t%s\n", pci_name(dev));
}
}
- return 0;
-exit_rc:
- dealloc_slot_struct(slot);
- return -EINVAL;
-}
-int rpaphp_register_pci_slot(struct slot *slot)
-{
- int rc = -EINVAL;
-
- if (setup_pci_hotplug_slot_info(slot))
- goto exit_rc;
- if (setup_pci_slot(slot))
- goto exit_rc;
- rc = rpaphp_register_slot(slot);
-exit_rc:
- return rc;
+ return 0;
}
diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c
index 3009193f005..d4ee8723fcb 100644
--- a/drivers/pci/hotplug/rpaphp_slot.c
+++ b/drivers/pci/hotplug/rpaphp_slot.c
@@ -56,7 +56,6 @@ static struct hotplug_slot_attribute php_attr_location = {
static void rpaphp_release_slot(struct hotplug_slot *hotplug_slot)
{
struct slot *slot = (struct slot *) hotplug_slot->private;
-
dealloc_slot_struct(slot);
}
@@ -65,12 +64,12 @@ void dealloc_slot_struct(struct slot *slot)
kfree(slot->hotplug_slot->info);
kfree(slot->hotplug_slot->name);
kfree(slot->hotplug_slot);
+ kfree(slot->location);
kfree(slot);
- return;
}
-struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name,
- int power_domain)
+struct slot *alloc_slot_struct(struct device_node *dn,
+ int drc_index, char *drc_name, int power_domain)
{
struct slot *slot;
@@ -115,7 +114,7 @@ error_nomem:
static int is_registered(struct slot *slot)
{
- struct slot *tmp_slot;
+ struct slot *tmp_slot;
list_for_each_entry(tmp_slot, &rpaphp_slot_head, rpaphp_slot_list) {
if (!strcmp(tmp_slot->name, slot->name))
@@ -140,8 +139,6 @@ int rpaphp_deregister_slot(struct slot *slot)
retval = pci_hp_deregister(php_slot);
if (retval)
err("Problem unregistering a slot %s\n", slot->name);
- else
- num_slots--;
dbg("%s - Exit: rc[%d]\n", __FUNCTION__, retval);
return retval;
@@ -160,14 +157,13 @@ int rpaphp_register_slot(struct slot *slot)
/* should not try to register the same slot twice */
if (is_registered(slot)) {
err("rpaphp_register_slot: slot[%s] is already registered\n", slot->name);
- retval = -EAGAIN;
- goto register_fail;
+ return -EAGAIN;
}
retval = pci_hp_register(php_slot);
if (retval) {
err("pci_hp_register failed with error %d\n", retval);
- goto register_fail;
+ return retval;
}
/* create "phy_location" file */
@@ -181,43 +177,10 @@ int rpaphp_register_slot(struct slot *slot)
list_add(&slot->rpaphp_slot_list, &rpaphp_slot_head);
info("Slot [%s](PCI location=%s) registered\n", slot->name,
slot->location);
- num_slots++;
return 0;
sysfs_fail:
pci_hp_deregister(php_slot);
-register_fail:
- rpaphp_release_slot(php_slot);
return retval;
}
-int rpaphp_get_power_status(struct slot *slot, u8 * value)
-{
- int rc = 0, level;
-
- rc = rtas_get_power_level(slot->power_domain, &level);
- if (rc < 0) {
- err("failed to get power-level for slot(%s), rc=0x%x\n",
- slot->location, rc);
- return rc;
- }
-
- dbg("%s the power level of slot %s(pwd-domain:0x%x) is %d\n",
- __FUNCTION__, slot->name, slot->power_domain, level);
- *value = level;
-
- return rc;
-}
-
-int rpaphp_set_attention_status(struct slot *slot, u8 status)
-{
- int rc;
-
- /* status: LED_OFF or LED_ON */
- rc = rtas_set_indicator(DR_INDICATOR, slot->index, status);
- if (rc < 0)
- err("slot(name=%s location=%s index=0x%x) set attention-status(%d) failed! rc=0x%x\n",
- slot->name, slot->location, slot->index, status, rc);
-
- return rc;
-}
diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h
index 01d31a1f697..37ed0884b97 100644
--- a/drivers/pci/hotplug/shpchp.h
+++ b/drivers/pci/hotplug/shpchp.h
@@ -166,7 +166,7 @@ extern u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl);
extern int shpchp_configure_device(struct slot *p_slot);
extern int shpchp_unconfigure_device(struct slot *p_slot);
extern void cleanup_slots(struct controller *ctrl);
-extern void queue_pushbutton_work(struct work_struct *work);
+extern void shpchp_queue_pushbutton_work(struct work_struct *work);
extern int shpc_init( struct controller *ctrl, struct pci_dev *pdev);
#ifdef CONFIG_ACPI
diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c
index 5f4bc08a633..80dec9796b3 100644
--- a/drivers/pci/hotplug/shpchp_core.c
+++ b/drivers/pci/hotplug/shpchp_core.c
@@ -136,7 +136,7 @@ static int init_slots(struct controller *ctrl)
slot->hpc_ops = ctrl->hpc_ops;
slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i);
mutex_init(&slot->lock);
- INIT_DELAYED_WORK(&slot->work, queue_pushbutton_work);
+ INIT_DELAYED_WORK(&slot->work, shpchp_queue_pushbutton_work);
/* register this slot with the hotplug pci core */
hotplug_slot->private = slot;
diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c
index b746bd265bc..2c94d44279a 100644
--- a/drivers/pci/hotplug/shpchp_ctrl.c
+++ b/drivers/pci/hotplug/shpchp_ctrl.c
@@ -433,7 +433,7 @@ static void shpchp_pushbutton_thread(struct work_struct *work)
kfree(info);
}
-void queue_pushbutton_work(struct work_struct *work)
+void shpchp_queue_pushbutton_work(struct work_struct *work)
{
struct slot *p_slot = container_of(work, struct slot, work.work);
struct pushbutton_work_info *info;
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 435c1958a7b..9e1321d0d5e 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -24,20 +24,8 @@
#include "pci.h"
#include "msi.h"
-static struct kmem_cache* msi_cachep;
-
static int pci_msi_enable = 1;
-static int msi_cache_init(void)
-{
- msi_cachep = kmem_cache_create("msi_cache", sizeof(struct msi_desc),
- 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
- if (!msi_cachep)
- return -ENOMEM;
-
- return 0;
-}
-
static void msi_set_enable(struct pci_dev *dev, int enable)
{
int pos;
@@ -68,6 +56,29 @@ static void msix_set_enable(struct pci_dev *dev, int enable)
}
}
+static void msix_flush_writes(unsigned int irq)
+{
+ struct msi_desc *entry;
+
+ entry = get_irq_msi(irq);
+ BUG_ON(!entry || !entry->dev);
+ switch (entry->msi_attrib.type) {
+ case PCI_CAP_ID_MSI:
+ /* nothing to do */
+ break;
+ case PCI_CAP_ID_MSIX:
+ {
+ int offset = entry->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE +
+ PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET;
+ readl(entry->mask_base + offset);
+ break;
+ }
+ default:
+ BUG();
+ break;
+ }
+}
+
static void msi_set_mask_bit(unsigned int irq, int flag)
{
struct msi_desc *entry;
@@ -187,41 +198,28 @@ void write_msi_msg(unsigned int irq, struct msi_msg *msg)
void mask_msi_irq(unsigned int irq)
{
msi_set_mask_bit(irq, 1);
+ msix_flush_writes(irq);
}
void unmask_msi_irq(unsigned int irq)
{
msi_set_mask_bit(irq, 0);
+ msix_flush_writes(irq);
}
-static int msi_free_irq(struct pci_dev* dev, int irq);
-
-static int msi_init(void)
-{
- static int status = -ENOMEM;
-
- if (!status)
- return status;
+static int msi_free_irqs(struct pci_dev* dev);
- status = msi_cache_init();
- if (status < 0) {
- pci_msi_enable = 0;
- printk(KERN_WARNING "PCI: MSI cache init failed\n");
- return status;
- }
-
- return status;
-}
static struct msi_desc* alloc_msi_entry(void)
{
struct msi_desc *entry;
- entry = kmem_cache_zalloc(msi_cachep, GFP_KERNEL);
+ entry = kzalloc(sizeof(struct msi_desc), GFP_KERNEL);
if (!entry)
return NULL;
- entry->link.tail = entry->link.head = 0; /* single message */
+ INIT_LIST_HEAD(&entry->list);
+ entry->irq = 0;
entry->dev = NULL;
return entry;
@@ -256,7 +254,6 @@ static void __pci_restore_msi_state(struct pci_dev *dev)
static void __pci_restore_msix_state(struct pci_dev *dev)
{
int pos;
- int irq, head, tail = 0;
struct msi_desc *entry;
u16 control;
@@ -266,18 +263,15 @@ static void __pci_restore_msix_state(struct pci_dev *dev)
/* route the table */
pci_intx(dev, 0); /* disable intx */
msix_set_enable(dev, 0);
- irq = head = dev->first_msi_irq;
- entry = get_irq_msi(irq);
- pos = entry->msi_attrib.pos;
- while (head != tail) {
- entry = get_irq_msi(irq);
- write_msi_msg(irq, &entry->msg);
- msi_set_mask_bit(irq, entry->msi_attrib.masked);
- tail = entry->link.tail;
- irq = tail;
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ write_msi_msg(entry->irq, &entry->msg);
+ msi_set_mask_bit(entry->irq, entry->msi_attrib.masked);
}
+ BUG_ON(list_empty(&dev->msi_list));
+ entry = list_entry(dev->msi_list.next, struct msi_desc, list);
+ pos = entry->msi_attrib.pos;
pci_read_config_word(dev, pos + PCI_MSIX_FLAGS, &control);
control &= ~PCI_MSIX_FLAGS_MASKALL;
control |= PCI_MSIX_FLAGS_ENABLE;
@@ -303,7 +297,7 @@ void pci_restore_msi_state(struct pci_dev *dev)
static int msi_capability_init(struct pci_dev *dev)
{
struct msi_desc *entry;
- int pos, irq;
+ int pos, ret;
u16 control;
msi_set_enable(dev, 0); /* Ensure msi is disabled as I set it up */
@@ -340,23 +334,21 @@ static int msi_capability_init(struct pci_dev *dev)
msi_mask_bits_reg(pos, is_64bit_address(control)),
maskbits);
}
+ list_add(&entry->list, &dev->msi_list);
+
/* Configure MSI capability structure */
- irq = arch_setup_msi_irq(dev, entry);
- if (irq < 0) {
- kmem_cache_free(msi_cachep, entry);
- return irq;
+ ret = arch_setup_msi_irqs(dev, 1, PCI_CAP_ID_MSI);
+ if (ret) {
+ msi_free_irqs(dev);
+ return ret;
}
- entry->link.head = irq;
- entry->link.tail = irq;
- dev->first_msi_irq = irq;
- set_irq_msi(irq, entry);
/* Set MSI enabled bits */
pci_intx(dev, 0); /* disable intx */
msi_set_enable(dev, 1);
dev->msi_enabled = 1;
- dev->irq = irq;
+ dev->irq = entry->irq;
return 0;
}
@@ -373,8 +365,8 @@ static int msi_capability_init(struct pci_dev *dev)
static int msix_capability_init(struct pci_dev *dev,
struct msix_entry *entries, int nvec)
{
- struct msi_desc *head = NULL, *tail = NULL, *entry = NULL;
- int irq, pos, i, j, nr_entries, temp = 0;
+ struct msi_desc *entry;
+ int pos, i, j, nr_entries, ret;
unsigned long phys_addr;
u32 table_offset;
u16 control;
@@ -413,44 +405,34 @@ static int msix_capability_init(struct pci_dev *dev,
entry->dev = dev;
entry->mask_base = base;
- /* Configure MSI-X capability structure */
- irq = arch_setup_msi_irq(dev, entry);
- if (irq < 0) {
- kmem_cache_free(msi_cachep, entry);
- break;
- }
- entries[i].vector = irq;
- if (!head) {
- entry->link.head = irq;
- entry->link.tail = irq;
- head = entry;
- } else {
- entry->link.head = temp;
- entry->link.tail = tail->link.tail;
- tail->link.tail = irq;
- head->link.head = irq;
- }
- temp = irq;
- tail = entry;
-
- set_irq_msi(irq, entry);
+ list_add(&entry->list, &dev->msi_list);
}
- if (i != nvec) {
- int avail = i - 1;
- i--;
- for (; i >= 0; i--) {
- irq = (entries + i)->vector;
- msi_free_irq(dev, irq);
- (entries + i)->vector = 0;
+
+ ret = arch_setup_msi_irqs(dev, nvec, PCI_CAP_ID_MSIX);
+ if (ret) {
+ int avail = 0;
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ if (entry->irq != 0) {
+ avail++;
+ }
}
+
+ msi_free_irqs(dev);
+
/* If we had some success report the number of irqs
* we succeeded in setting up.
*/
- if (avail <= 0)
- avail = -EBUSY;
+ if (avail == 0)
+ avail = ret;
return avail;
}
- dev->first_msi_irq = entries[0].vector;
+
+ i = 0;
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ entries[i].vector = entry->irq;
+ set_irq_msi(entry->irq, entry);
+ i++;
+ }
/* Set MSI-X enabled bits */
pci_intx(dev, 0); /* disable intx */
msix_set_enable(dev, 1);
@@ -460,21 +442,32 @@ static int msix_capability_init(struct pci_dev *dev,
}
/**
- * pci_msi_supported - check whether MSI may be enabled on device
+ * pci_msi_check_device - check whether MSI may be enabled on a device
* @dev: pointer to the pci_dev data structure of MSI device function
+ * @nvec: how many MSIs have been requested ?
+ * @type: are we checking for MSI or MSI-X ?
*
* Look at global flags, the device itself, and its parent busses
- * to return 0 if MSI are supported for the device.
+ * to determine if MSI/-X are supported for the device. If MSI/-X is
+ * supported return 0, else return an error code.
**/
-static
-int pci_msi_supported(struct pci_dev * dev)
+static int pci_msi_check_device(struct pci_dev* dev, int nvec, int type)
{
struct pci_bus *bus;
+ int ret;
/* MSI must be globally enabled and supported by the device */
if (!pci_msi_enable || !dev || dev->no_msi)
return -EINVAL;
+ /*
+ * You can't ask to have 0 or less MSIs configured.
+ * a) it's stupid ..
+ * b) the list manipulation code assumes nvec >= 1.
+ */
+ if (nvec < 1)
+ return -ERANGE;
+
/* Any bridge which does NOT route MSI transactions from it's
* secondary bus to it's primary bus must set NO_MSI flag on
* the secondary pci_bus.
@@ -485,6 +478,13 @@ int pci_msi_supported(struct pci_dev * dev)
if (bus->bus_flags & PCI_BUS_FLAGS_NO_MSI)
return -EINVAL;
+ ret = arch_msi_check_device(dev, nvec, type);
+ if (ret)
+ return ret;
+
+ if (!pci_find_capability(dev, type))
+ return -EINVAL;
+
return 0;
}
@@ -500,19 +500,12 @@ int pci_msi_supported(struct pci_dev * dev)
**/
int pci_enable_msi(struct pci_dev* dev)
{
- int pos, status;
-
- if (pci_msi_supported(dev) < 0)
- return -EINVAL;
+ int status;
- status = msi_init();
- if (status < 0)
+ status = pci_msi_check_device(dev, 1, PCI_CAP_ID_MSI);
+ if (status)
return status;
- pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
- if (!pos)
- return -EINVAL;
-
WARN_ON(!!dev->msi_enabled);
/* Check whether driver already requested for MSI-X irqs */
@@ -525,69 +518,54 @@ int pci_enable_msi(struct pci_dev* dev)
status = msi_capability_init(dev);
return status;
}
+EXPORT_SYMBOL(pci_enable_msi);
void pci_disable_msi(struct pci_dev* dev)
{
struct msi_desc *entry;
int default_irq;
- if (!pci_msi_enable)
- return;
- if (!dev)
- return;
-
- if (!dev->msi_enabled)
+ if (!pci_msi_enable || !dev || !dev->msi_enabled)
return;
msi_set_enable(dev, 0);
pci_intx(dev, 1); /* enable intx */
dev->msi_enabled = 0;
- entry = get_irq_msi(dev->first_msi_irq);
- if (!entry || !entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI) {
+ BUG_ON(list_empty(&dev->msi_list));
+ entry = list_entry(dev->msi_list.next, struct msi_desc, list);
+ if (!entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI) {
return;
}
- if (irq_has_action(dev->first_msi_irq)) {
- printk(KERN_WARNING "PCI: %s: pci_disable_msi() called without "
- "free_irq() on MSI irq %d\n",
- pci_name(dev), dev->first_msi_irq);
- BUG_ON(irq_has_action(dev->first_msi_irq));
- } else {
- default_irq = entry->msi_attrib.default_irq;
- msi_free_irq(dev, dev->first_msi_irq);
-
- /* Restore dev->irq to its default pin-assertion irq */
- dev->irq = default_irq;
- }
- dev->first_msi_irq = 0;
+
+ default_irq = entry->msi_attrib.default_irq;
+ msi_free_irqs(dev);
+
+ /* Restore dev->irq to its default pin-assertion irq */
+ dev->irq = default_irq;
}
+EXPORT_SYMBOL(pci_disable_msi);
-static int msi_free_irq(struct pci_dev* dev, int irq)
+static int msi_free_irqs(struct pci_dev* dev)
{
- struct msi_desc *entry;
- int head, entry_nr, type;
- void __iomem *base;
+ struct msi_desc *entry, *tmp;
- entry = get_irq_msi(irq);
- if (!entry || entry->dev != dev) {
- return -EINVAL;
- }
- type = entry->msi_attrib.type;
- entry_nr = entry->msi_attrib.entry_nr;
- head = entry->link.head;
- base = entry->mask_base;
- get_irq_msi(entry->link.head)->link.tail = entry->link.tail;
- get_irq_msi(entry->link.tail)->link.head = entry->link.head;
-
- arch_teardown_msi_irq(irq);
- kmem_cache_free(msi_cachep, entry);
-
- if (type == PCI_CAP_ID_MSIX) {
- writel(1, base + entry_nr * PCI_MSIX_ENTRY_SIZE +
- PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET);
-
- if (head == irq)
- iounmap(base);
+ list_for_each_entry(entry, &dev->msi_list, list)
+ BUG_ON(irq_has_action(entry->irq));
+
+ arch_teardown_msi_irqs(dev);
+
+ list_for_each_entry_safe(entry, tmp, &dev->msi_list, list) {
+ if (entry->msi_attrib.type == PCI_CAP_ID_MSIX) {
+ if (list_is_last(&entry->list, &dev->msi_list))
+ iounmap(entry->mask_base);
+
+ writel(1, entry->mask_base + entry->msi_attrib.entry_nr
+ * PCI_MSIX_ENTRY_SIZE
+ + PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET);
+ }
+ list_del(&entry->list);
+ kfree(entry);
}
return 0;
@@ -614,17 +592,14 @@ int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec)
int i, j;
u16 control;
- if (!entries || pci_msi_supported(dev) < 0)
+ if (!entries)
return -EINVAL;
- status = msi_init();
- if (status < 0)
+ status = pci_msi_check_device(dev, nvec, PCI_CAP_ID_MSIX);
+ if (status)
return status;
pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
- if (!pos)
- return -EINVAL;
-
pci_read_config_word(dev, msi_control_reg(pos), &control);
nr_entries = multi_msix_capable(control);
if (nvec > nr_entries)
@@ -651,41 +626,25 @@ int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec)
status = msix_capability_init(dev, entries, nvec);
return status;
}
+EXPORT_SYMBOL(pci_enable_msix);
-void pci_disable_msix(struct pci_dev* dev)
+static void msix_free_all_irqs(struct pci_dev *dev)
{
- int irq, head, tail = 0, warning = 0;
-
- if (!pci_msi_enable)
- return;
- if (!dev)
- return;
+ msi_free_irqs(dev);
+}
- if (!dev->msix_enabled)
+void pci_disable_msix(struct pci_dev* dev)
+{
+ if (!pci_msi_enable || !dev || !dev->msix_enabled)
return;
msix_set_enable(dev, 0);
pci_intx(dev, 1); /* enable intx */
dev->msix_enabled = 0;
- irq = head = dev->first_msi_irq;
- while (head != tail) {
- tail = get_irq_msi(irq)->link.tail;
- if (irq_has_action(irq))
- warning = 1;
- else if (irq != head) /* Release MSI-X irq */
- msi_free_irq(dev, irq);
- irq = tail;
- }
- msi_free_irq(dev, irq);
- if (warning) {
- printk(KERN_WARNING "PCI: %s: pci_disable_msix() called without "
- "free_irq() on all MSI-X irqs\n",
- pci_name(dev));
- BUG_ON(warning > 0);
- }
- dev->first_msi_irq = 0;
+ msix_free_all_irqs(dev);
}
+EXPORT_SYMBOL(pci_disable_msix);
/**
* msi_remove_pci_irq_vectors - reclaim MSI(X) irqs to unused state
@@ -701,38 +660,11 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
if (!pci_msi_enable || !dev)
return;
- if (dev->msi_enabled) {
- if (irq_has_action(dev->first_msi_irq)) {
- printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
- "called without free_irq() on MSI irq %d\n",
- pci_name(dev), dev->first_msi_irq);
- BUG_ON(irq_has_action(dev->first_msi_irq));
- } else /* Release MSI irq assigned to this device */
- msi_free_irq(dev, dev->first_msi_irq);
- }
- if (dev->msix_enabled) {
- int irq, head, tail = 0, warning = 0;
- void __iomem *base = NULL;
-
- irq = head = dev->first_msi_irq;
- while (head != tail) {
- tail = get_irq_msi(irq)->link.tail;
- base = get_irq_msi(irq)->mask_base;
- if (irq_has_action(irq))
- warning = 1;
- else if (irq != head) /* Release MSI-X irq */
- msi_free_irq(dev, irq);
- irq = tail;
- }
- msi_free_irq(dev, irq);
- if (warning) {
- iounmap(base);
- printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
- "called without free_irq() on all MSI-X irqs\n",
- pci_name(dev));
- BUG_ON(warning > 0);
- }
- }
+ if (dev->msi_enabled)
+ msi_free_irqs(dev);
+
+ if (dev->msix_enabled)
+ msix_free_all_irqs(dev);
}
void pci_no_msi(void)
@@ -740,7 +672,53 @@ void pci_no_msi(void)
pci_msi_enable = 0;
}
-EXPORT_SYMBOL(pci_enable_msi);
-EXPORT_SYMBOL(pci_disable_msi);
-EXPORT_SYMBOL(pci_enable_msix);
-EXPORT_SYMBOL(pci_disable_msix);
+void pci_msi_init_pci_dev(struct pci_dev *dev)
+{
+ INIT_LIST_HEAD(&dev->msi_list);
+}
+
+
+/* Arch hooks */
+
+int __attribute__ ((weak))
+arch_msi_check_device(struct pci_dev* dev, int nvec, int type)
+{
+ return 0;
+}
+
+int __attribute__ ((weak))
+arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry)
+{
+ return 0;
+}
+
+int __attribute__ ((weak))
+arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
+{
+ struct msi_desc *entry;
+ int ret;
+
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ ret = arch_setup_msi_irq(dev, entry);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq)
+{
+ return;
+}
+
+void __attribute__ ((weak))
+arch_teardown_msi_irqs(struct pci_dev *dev)
+{
+ struct msi_desc *entry;
+
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ if (entry->irq != 0)
+ arch_teardown_msi_irq(entry->irq);
+ }
+}
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 39e80fcef4b..3bb7739d26a 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -14,20 +14,6 @@
#include "pci.h"
/*
- * Registration of PCI drivers and handling of hot-pluggable devices.
- */
-
-/* multithreaded probe logic */
-static int pci_multithread_probe =
-#ifdef CONFIG_PCI_MULTITHREAD_PROBE
- 1;
-#else
- 0;
-#endif
-__module_param_call("", pci_multithread_probe, param_set_bool, param_get_bool, &pci_multithread_probe, 0644);
-
-
-/*
* Dynamic device IDs are disabled for !CONFIG_HOTPLUG
*/
@@ -52,7 +38,7 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
{
struct pci_dynid *dynid;
struct pci_driver *pdrv = to_pci_driver(driver);
- __u32 vendor=PCI_ANY_ID, device=PCI_ANY_ID, subvendor=PCI_ANY_ID,
+ __u32 vendor, device, subvendor=PCI_ANY_ID,
subdevice=PCI_ANY_ID, class=0, class_mask=0;
unsigned long driver_data=0;
int fields=0;
@@ -61,7 +47,7 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
fields = sscanf(buf, "%x %x %x %x %x %x %lux",
&vendor, &device, &subvendor, &subdevice,
&class, &class_mask, &driver_data);
- if (fields < 0)
+ if (fields < 2)
return -EINVAL;
dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
@@ -569,7 +555,6 @@ struct bus_type pci_bus_type = {
static int __init pci_driver_init(void)
{
- pci_bus_type.multithread_probe = pci_multithread_probe;
return bus_register(&pci_bus_type);
}
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index cd913a2a416..284e83a527f 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -620,7 +620,8 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
goto err_bin_file;
/* If the device has a ROM, try to expose it in sysfs. */
- if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) {
+ if (pci_resource_len(pdev, PCI_ROM_RESOURCE) ||
+ (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)) {
rom_attr = kzalloc(sizeof(*rom_attr), GFP_ATOMIC);
if (rom_attr) {
pdev->rom_attr = rom_attr;
@@ -635,7 +636,7 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
goto err_rom;
} else {
retval = -ENOMEM;
- goto err_bin_file;
+ goto err_resource_files;
}
}
/* add platform-specific attributes */
@@ -645,6 +646,8 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
err_rom:
kfree(rom_attr);
+err_resource_files:
+ pci_remove_resource_files(pdev);
err_bin_file:
if (pdev->cfg_size < 4096)
sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
@@ -695,4 +698,4 @@ static int __init pci_sysfs_init(void)
return 0;
}
-__initcall(pci_sysfs_init);
+late_initcall(pci_sysfs_init);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 2a458279327..fd47ac0c473 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -35,8 +35,7 @@ unsigned long pci_cardbus_mem_size = DEFAULT_CARDBUS_MEM_SIZE;
* Given a PCI bus, returns the highest PCI bus number present in the set
* including the given PCI bus and its list of child PCI buses.
*/
-unsigned char __devinit
-pci_bus_max_busnr(struct pci_bus* bus)
+unsigned char pci_bus_max_busnr(struct pci_bus* bus)
{
struct list_head *tmp;
unsigned char max, n;
@@ -892,6 +891,34 @@ pci_disable_device(struct pci_dev *dev)
}
/**
+ * pcibios_set_pcie_reset_state - set reset state for device dev
+ * @dev: the PCI-E device reset
+ * @state: Reset state to enter into
+ *
+ *
+ * Sets the PCI-E reset state for the device. This is the default
+ * implementation. Architecture implementations can override this.
+ */
+int __attribute__ ((weak)) pcibios_set_pcie_reset_state(struct pci_dev *dev,
+ enum pcie_reset_state state)
+{
+ return -EINVAL;
+}
+
+/**
+ * pci_set_pcie_reset_state - set reset state for device dev
+ * @dev: the PCI-E device reset
+ * @state: Reset state to enter into
+ *
+ *
+ * Sets the PCI reset state for the device.
+ */
+int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
+{
+ return pcibios_set_pcie_reset_state(dev, state);
+}
+
+/**
* pci_enable_wake - enable PCI device as wakeup event source
* @dev: PCI device affected
* @state: PCI state from which device will issue wakeup events
@@ -1295,7 +1322,7 @@ pci_intx(struct pci_dev *pdev, int enable)
/**
* pci_msi_off - disables any msi or msix capabilities
- * @pdev: the PCI device to operate on
+ * @dev: the PCI device to operate on
*
* If you want to use msi see pci_enable_msi and friends.
* This is a lower level primitive that allows us to disable
@@ -1427,4 +1454,5 @@ EXPORT_SYMBOL(pci_set_power_state);
EXPORT_SYMBOL(pci_save_state);
EXPORT_SYMBOL(pci_restore_state);
EXPORT_SYMBOL(pci_enable_wake);
+EXPORT_SYMBOL_GPL(pci_set_pcie_reset_state);
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 62ea04c8af6..3fec13d3add 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -47,8 +47,10 @@ extern unsigned int pci_pm_d3_delay;
#ifdef CONFIG_PCI_MSI
void pci_no_msi(void);
+extern void pci_msi_init_pci_dev(struct pci_dev *dev);
#else
static inline void pci_no_msi(void) { }
+static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
#endif
#if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 2fe1d690eb1..e48fcf08962 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -364,7 +364,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
}
}
-static struct pci_bus * __devinit pci_alloc_bus(void)
+static struct pci_bus * pci_alloc_bus(void)
{
struct pci_bus *b;
@@ -432,7 +432,7 @@ error_register:
return NULL;
}
-struct pci_bus * __devinit pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)
+struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)
{
struct pci_bus *child;
@@ -461,7 +461,7 @@ static void pci_enable_crs(struct pci_dev *dev)
pci_write_config_word(dev, rpcap + PCI_EXP_RTCTL, rpctl);
}
-static void __devinit pci_fixup_parent_subordinate_busnr(struct pci_bus *child, int max)
+static void pci_fixup_parent_subordinate_busnr(struct pci_bus *child, int max)
{
struct pci_bus *parent = child->parent;
@@ -477,7 +477,7 @@ static void __devinit pci_fixup_parent_subordinate_busnr(struct pci_bus *child,
}
}
-unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus);
+unsigned int pci_scan_child_bus(struct pci_bus *bus);
/*
* If it's a bridge, configure it and scan the bus behind it.
@@ -489,7 +489,7 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus);
* them, we proceed to assigning numbers to the remaining buses in
* order to avoid overlaps between old and new bus numbers.
*/
-int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass)
+int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass)
{
struct pci_bus *child;
int is_cardbus = (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS);
@@ -846,6 +846,23 @@ static void pci_release_bus_bridge_dev(struct device *dev)
kfree(dev);
}
+struct pci_dev *alloc_pci_dev(void)
+{
+ struct pci_dev *dev;
+
+ dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ INIT_LIST_HEAD(&dev->global_list);
+ INIT_LIST_HEAD(&dev->bus_list);
+
+ pci_msi_init_pci_dev(dev);
+
+ return dev;
+}
+EXPORT_SYMBOL(alloc_pci_dev);
+
/*
* Read the config data for a PCI device, sanity-check it
* and fill in the dev structure...
@@ -885,7 +902,7 @@ pci_scan_device(struct pci_bus *bus, int devfn)
if (pci_bus_read_config_byte(bus, devfn, PCI_HEADER_TYPE, &hdr_type))
return NULL;
- dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
+ dev = alloc_pci_dev();
if (!dev)
return NULL;
@@ -912,7 +929,7 @@ pci_scan_device(struct pci_bus *bus, int devfn)
return dev;
}
-void __devinit pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
+void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
{
device_initialize(&dev->dev);
dev->dev.release = pci_release_dev;
@@ -935,8 +952,7 @@ void __devinit pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
up_write(&pci_bus_sem);
}
-struct pci_dev * __devinit
-pci_scan_single_device(struct pci_bus *bus, int devfn)
+struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn)
{
struct pci_dev *dev;
@@ -958,7 +974,7 @@ pci_scan_single_device(struct pci_bus *bus, int devfn)
* discovered devices to the @bus->devices list. New devices
* will have an empty dev->global_list head.
*/
-int __devinit pci_scan_slot(struct pci_bus *bus, int devfn)
+int pci_scan_slot(struct pci_bus *bus, int devfn)
{
int func, nr = 0;
int scan_all_fns;
@@ -991,7 +1007,7 @@ int __devinit pci_scan_slot(struct pci_bus *bus, int devfn)
return nr;
}
-unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
+unsigned int pci_scan_child_bus(struct pci_bus *bus)
{
unsigned int devfn, pass, max = bus->secondary;
struct pci_dev *dev;
@@ -1041,7 +1057,7 @@ unsigned int __devinit pci_do_scan_bus(struct pci_bus *bus)
return max;
}
-struct pci_bus * __devinit pci_create_bus(struct device *parent,
+struct pci_bus * pci_create_bus(struct device *parent,
int bus, struct pci_ops *ops, void *sysdata)
{
int error;
@@ -1119,7 +1135,7 @@ err_out:
}
EXPORT_SYMBOL_GPL(pci_create_bus);
-struct pci_bus * __devinit pci_scan_bus_parented(struct device *parent,
+struct pci_bus *pci_scan_bus_parented(struct device *parent,
int bus, struct pci_ops *ops, void *sysdata)
{
struct pci_bus *b;
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 3411483240c..147d86f8edb 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1648,6 +1648,8 @@ static void __devinit quirk_disable_msi(struct pci_dev *dev)
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_msi);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_msi);
/* Go through the list of Hypertransport capabilities and
* return 1 if a HT MSI capability is found and enabled */
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 2dd8681d6b3..b137a27472c 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -15,8 +15,7 @@
DECLARE_RWSEM(pci_bus_sem);
-static struct pci_bus *
-pci_do_find_bus(struct pci_bus* bus, unsigned char busnr)
+static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr)
{
struct pci_bus* child;
struct list_head *tmp;
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 3554f394881..5ec297d7a5b 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -36,8 +36,7 @@
#define ROUND_UP(x, a) (((x) + (a) - 1) & ~((a) - 1))
-static void __devinit
-pbus_assign_resources_sorted(struct pci_bus *bus)
+static void pbus_assign_resources_sorted(struct pci_bus *bus)
{
struct pci_dev *dev;
struct resource *res;
@@ -220,8 +219,7 @@ pci_setup_bridge(struct pci_bus *bus)
/* Check whether the bridge supports optional I/O and
prefetchable memory ranges. If not, the respective
base/limit registers must be read-only and read as 0. */
-static void __devinit
-pci_bridge_check_ranges(struct pci_bus *bus)
+static void pci_bridge_check_ranges(struct pci_bus *bus)
{
u16 io;
u32 pmem;
@@ -259,8 +257,7 @@ pci_bridge_check_ranges(struct pci_bus *bus)
bus resource of a given type. Note: we intentionally skip
the bus resources which have already been assigned (that is,
have non-NULL parent resource). */
-static struct resource * __devinit
-find_free_bus_resource(struct pci_bus *bus, unsigned long type)
+static struct resource *find_free_bus_resource(struct pci_bus *bus, unsigned long type)
{
int i;
struct resource *r;
@@ -281,8 +278,7 @@ find_free_bus_resource(struct pci_bus *bus, unsigned long type)
since these windows have 4K granularity and the IO ranges
of non-bridge PCI devices are limited to 256 bytes.
We must be careful with the ISA aliasing though. */
-static void __devinit
-pbus_size_io(struct pci_bus *bus)
+static void pbus_size_io(struct pci_bus *bus)
{
struct pci_dev *dev;
struct resource *b_res = find_free_bus_resource(bus, IORESOURCE_IO);
@@ -326,8 +322,7 @@ pbus_size_io(struct pci_bus *bus)
/* Calculate the size of the bus and minimal alignment which
guarantees that all child resources fit in this size. */
-static int __devinit
-pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long type)
+static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long type)
{
struct pci_dev *dev;
unsigned long min_align, align, size;
@@ -447,8 +442,7 @@ pci_bus_size_cardbus(struct pci_bus *bus)
}
}
-void __devinit
-pci_bus_size_bridges(struct pci_bus *bus)
+void pci_bus_size_bridges(struct pci_bus *bus)
{
struct pci_dev *dev;
unsigned long mask, prefmask;
@@ -498,8 +492,7 @@ pci_bus_size_bridges(struct pci_bus *bus)
}
EXPORT_SYMBOL(pci_bus_size_bridges);
-void __devinit
-pci_bus_assign_resources(struct pci_bus *bus)
+void pci_bus_assign_resources(struct pci_bus *bus)
{
struct pci_bus *b;
struct pci_dev *dev;
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index cb4ced3560e..6dfd86167e3 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -101,8 +101,7 @@ pci_update_resource(struct pci_dev *dev, struct resource *res, int resno)
new & ~PCI_REGION_FLAG_MASK);
}
-int __devinit
-pci_claim_resource(struct pci_dev *dev, int resource)
+int pci_claim_resource(struct pci_dev *dev, int resource)
{
struct resource *res = &dev->resource[resource];
struct resource *root = NULL;
@@ -212,8 +211,7 @@ EXPORT_SYMBOL_GPL(pci_assign_resource_fixed);
#endif
/* Sort resources by alignment */
-void __devinit
-pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
+void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
{
int i;