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-rw-r--r--drivers/pnp/card.c25
-rw-r--r--drivers/pnp/driver.c47
-rw-r--r--drivers/pnp/manager.c78
-rw-r--r--drivers/pnp/pnpbios/bioscalls.c45
-rw-r--r--drivers/pnp/pnpbios/core.c8
5 files changed, 152 insertions, 51 deletions
diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index bd7c966ea2d..0ecbe4edbec 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -69,6 +69,7 @@ static int card_probe(struct pnp_card * card, struct pnp_card_driver * drv)
return 0;
clink->card = card;
clink->driver = drv;
+ clink->pm_state = PMSG_ON;
if (drv->probe) {
if (drv->probe(clink, id)>=0)
return 1;
@@ -333,6 +334,28 @@ void pnp_release_card_device(struct pnp_dev * dev)
up_write(&dev->dev.bus->subsys.rwsem);
}
+/*
+ * suspend/resume callbacks
+ */
+static int card_suspend(struct pnp_dev *dev, pm_message_t state)
+{
+ struct pnp_card_link *link = dev->card_link;
+ if (link->pm_state.event == state.event)
+ return 0;
+ link->pm_state = state;
+ return link->driver->suspend(link, state);
+}
+
+static int card_resume(struct pnp_dev *dev)
+{
+ struct pnp_card_link *link = dev->card_link;
+ if (link->pm_state.event == PM_EVENT_ON)
+ return 0;
+ link->pm_state = PMSG_ON;
+ link->driver->resume(link);
+ return 0;
+}
+
/**
* pnp_register_card_driver - registers a PnP card driver with the PnP Layer
* @drv: pointer to the driver to register
@@ -348,6 +371,8 @@ int pnp_register_card_driver(struct pnp_card_driver * drv)
drv->link.flags = drv->flags;
drv->link.probe = NULL;
drv->link.remove = &card_remove_first;
+ drv->link.suspend = drv->suspend ? card_suspend : NULL;
+ drv->link.resume = drv->resume ? card_resume : NULL;
spin_lock(&pnp_lock);
list_add_tail(&drv->global_list, &pnp_card_drivers);
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index d3ccce706ab..15fb758a9e5 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -146,10 +146,57 @@ static int pnp_bus_match(struct device *dev, struct device_driver *drv)
return 1;
}
+static int pnp_bus_suspend(struct device *dev, pm_message_t state)
+{
+ struct pnp_dev * pnp_dev = to_pnp_dev(dev);
+ struct pnp_driver * pnp_drv = pnp_dev->driver;
+ int error;
+
+ if (!pnp_drv)
+ return 0;
+
+ if (pnp_drv->suspend) {
+ error = pnp_drv->suspend(pnp_dev, state);
+ if (error)
+ return error;
+ }
+
+ if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE) &&
+ pnp_can_disable(pnp_dev)) {
+ error = pnp_stop_dev(pnp_dev);
+ if (error)
+ return error;
+ }
+
+ return 0;
+}
+
+static int pnp_bus_resume(struct device *dev)
+{
+ struct pnp_dev * pnp_dev = to_pnp_dev(dev);
+ struct pnp_driver * pnp_drv = pnp_dev->driver;
+ int error;
+
+ if (!pnp_drv)
+ return 0;
+
+ if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) {
+ error = pnp_start_dev(pnp_dev);
+ if (error)
+ return error;
+ }
+
+ if (pnp_drv->resume)
+ return pnp_drv->resume(pnp_dev);
+
+ return 0;
+}
struct bus_type pnp_bus_type = {
.name = "pnp",
.match = pnp_bus_match,
+ .suspend = pnp_bus_suspend,
+ .resume = pnp_bus_resume,
};
diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c
index 261668618b2..c4256aa32bc 100644
--- a/drivers/pnp/manager.c
+++ b/drivers/pnp/manager.c
@@ -470,6 +470,53 @@ int pnp_auto_config_dev(struct pnp_dev *dev)
}
/**
+ * pnp_start_dev - low-level start of the PnP device
+ * @dev: pointer to the desired device
+ *
+ * assumes that resources have alread been allocated
+ */
+
+int pnp_start_dev(struct pnp_dev *dev)
+{
+ if (!pnp_can_write(dev)) {
+ pnp_info("Device %s does not supported activation.", dev->dev.bus_id);
+ return -EINVAL;
+ }
+
+ if (dev->protocol->set(dev, &dev->res)<0) {
+ pnp_err("Failed to activate device %s.", dev->dev.bus_id);
+ return -EIO;
+ }
+
+ pnp_info("Device %s activated.", dev->dev.bus_id);
+
+ return 0;
+}
+
+/**
+ * pnp_stop_dev - low-level disable of the PnP device
+ * @dev: pointer to the desired device
+ *
+ * does not free resources
+ */
+
+int pnp_stop_dev(struct pnp_dev *dev)
+{
+ if (!pnp_can_disable(dev)) {
+ pnp_info("Device %s does not supported disabling.", dev->dev.bus_id);
+ return -EINVAL;
+ }
+ if (dev->protocol->disable(dev)<0) {
+ pnp_err("Failed to disable device %s.", dev->dev.bus_id);
+ return -EIO;
+ }
+
+ pnp_info("Device %s disabled.", dev->dev.bus_id);
+
+ return 0;
+}
+
+/**
* pnp_activate_dev - activates a PnP device for use
* @dev: pointer to the desired device
*
@@ -477,6 +524,8 @@ int pnp_auto_config_dev(struct pnp_dev *dev)
*/
int pnp_activate_dev(struct pnp_dev *dev)
{
+ int error;
+
if (!dev)
return -EINVAL;
if (dev->active) {
@@ -487,18 +536,11 @@ int pnp_activate_dev(struct pnp_dev *dev)
if (pnp_auto_config_dev(dev))
return -EBUSY;
- if (!pnp_can_write(dev)) {
- pnp_info("Device %s does not supported activation.", dev->dev.bus_id);
- return -EINVAL;
- }
-
- if (dev->protocol->set(dev, &dev->res)<0) {
- pnp_err("Failed to activate device %s.", dev->dev.bus_id);
- return -EIO;
- }
+ error = pnp_start_dev(dev);
+ if (error)
+ return error;
dev->active = 1;
- pnp_info("Device %s activated.", dev->dev.bus_id);
return 1;
}
@@ -511,23 +553,19 @@ int pnp_activate_dev(struct pnp_dev *dev)
*/
int pnp_disable_dev(struct pnp_dev *dev)
{
+ int error;
+
if (!dev)
return -EINVAL;
if (!dev->active) {
return 0; /* the device is already disabled */
}
- if (!pnp_can_disable(dev)) {
- pnp_info("Device %s does not supported disabling.", dev->dev.bus_id);
- return -EINVAL;
- }
- if (dev->protocol->disable(dev)<0) {
- pnp_err("Failed to disable device %s.", dev->dev.bus_id);
- return -EIO;
- }
+ error = pnp_stop_dev(dev);
+ if (error)
+ return error;
dev->active = 0;
- pnp_info("Device %s disabled.", dev->dev.bus_id);
/* release the resources so that other devices can use them */
down(&pnp_res_mutex);
@@ -558,6 +596,8 @@ EXPORT_SYMBOL(pnp_manual_config_dev);
#if 0
EXPORT_SYMBOL(pnp_auto_config_dev);
#endif
+EXPORT_SYMBOL(pnp_start_dev);
+EXPORT_SYMBOL(pnp_stop_dev);
EXPORT_SYMBOL(pnp_activate_dev);
EXPORT_SYMBOL(pnp_disable_dev);
EXPORT_SYMBOL(pnp_resource_change);
diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c
index 6b7583f497d..a1f0b0ba2bf 100644
--- a/drivers/pnp/pnpbios/bioscalls.c
+++ b/drivers/pnp/pnpbios/bioscalls.c
@@ -31,15 +31,6 @@ static struct {
} pnp_bios_callpoint;
-/* The PnP BIOS entries in the GDT */
-#define PNP_GDT (GDT_ENTRY_PNPBIOS_BASE * 8)
-
-#define PNP_CS32 (PNP_GDT+0x00) /* segment for calling fn */
-#define PNP_CS16 (PNP_GDT+0x08) /* code segment for BIOS */
-#define PNP_DS (PNP_GDT+0x10) /* data segment for BIOS */
-#define PNP_TS1 (PNP_GDT+0x18) /* transfer data segment */
-#define PNP_TS2 (PNP_GDT+0x20) /* another data segment */
-
/*
* These are some opcodes for a "static asmlinkage"
* As this code is *not* executed inside the linux kernel segment, but in a
@@ -67,16 +58,11 @@ __asm__(
".previous \n"
);
-#define Q_SET_SEL(cpu, selname, address, size) \
-do { \
-set_base(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], __va((u32)(address))); \
-set_limit(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], size); \
-} while(0)
-
#define Q2_SET_SEL(cpu, selname, address, size) \
do { \
-set_base(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], (u32)(address)); \
-set_limit(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], size); \
+struct desc_struct *gdt = get_cpu_gdt_table((cpu)); \
+set_base(gdt[(selname) >> 3], (u32)(address)); \
+set_limit(gdt[(selname) >> 3], size); \
} while(0)
static struct desc_struct bad_bios_desc = { 0, 0x00409200 };
@@ -115,8 +101,8 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3,
return PNP_FUNCTION_NOT_SUPPORTED;
cpu = get_cpu();
- save_desc_40 = per_cpu(cpu_gdt_table,cpu)[0x40 / 8];
- per_cpu(cpu_gdt_table,cpu)[0x40 / 8] = bad_bios_desc;
+ save_desc_40 = get_cpu_gdt_table(cpu)[0x40 / 8];
+ get_cpu_gdt_table(cpu)[0x40 / 8] = bad_bios_desc;
/* On some boxes IRQ's during PnP BIOS calls are deadly. */
spin_lock_irqsave(&pnp_bios_lock, flags);
@@ -158,7 +144,7 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3,
);
spin_unlock_irqrestore(&pnp_bios_lock, flags);
- per_cpu(cpu_gdt_table,cpu)[0x40 / 8] = save_desc_40;
+ get_cpu_gdt_table(cpu)[0x40 / 8] = save_desc_40;
put_cpu();
/* If we get here and this is set then the PnP BIOS faulted on us. */
@@ -290,12 +276,15 @@ int pnp_bios_dev_node_info(struct pnp_dev_node_info *data)
static int __pnp_bios_get_dev_node(u8 *nodenum, char boot, struct pnp_bios_node *data)
{
u16 status;
+ u16 tmp_nodenum;
if (!pnp_bios_present())
return PNP_FUNCTION_NOT_SUPPORTED;
if ( !boot && pnpbios_dont_use_current_config )
return PNP_FUNCTION_NOT_SUPPORTED;
+ tmp_nodenum = *nodenum;
status = call_pnp_bios(PNP_GET_SYS_DEV_NODE, 0, PNP_TS1, 0, PNP_TS2, boot ? 2 : 1, PNP_DS, 0,
- nodenum, sizeof(char), data, 65536);
+ &tmp_nodenum, sizeof(tmp_nodenum), data, 65536);
+ *nodenum = tmp_nodenum;
return status;
}
@@ -535,10 +524,12 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header)
set_base(bad_bios_desc, __va((unsigned long)0x40 << 4));
_set_limit((char *)&bad_bios_desc, 4095 - (0x40 << 4));
- for(i=0; i < NR_CPUS; i++)
- {
- Q2_SET_SEL(i, PNP_CS32, &pnp_bios_callfunc, 64 * 1024);
- Q_SET_SEL(i, PNP_CS16, header->fields.pm16cseg, 64 * 1024);
- Q_SET_SEL(i, PNP_DS, header->fields.pm16dseg, 64 * 1024);
- }
+ for (i = 0; i < NR_CPUS; i++) {
+ struct desc_struct *gdt = get_cpu_gdt_table(i);
+ if (!gdt)
+ continue;
+ set_base(gdt[GDT_ENTRY_PNPBIOS_CS32], &pnp_bios_callfunc);
+ set_base(gdt[GDT_ENTRY_PNPBIOS_CS16], __va(header->fields.pm16cseg));
+ set_base(gdt[GDT_ENTRY_PNPBIOS_DS], __va(header->fields.pm16dseg));
+ }
}
diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index f49674f0794..b154b3f52cb 100644
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -56,7 +56,6 @@
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/slab.h>
-#include <linux/kobject_uevent.h>
#include <linux/completion.h>
#include <linux/spinlock.h>
#include <linux/dmi.h>
@@ -106,8 +105,6 @@ static int pnp_dock_event(int dock, struct pnp_docking_station_info *info)
char *argv [3], **envp, *buf, *scratch;
int i = 0, value;
- if (!hotplug_path [0])
- return -ENOENT;
if (!current->fs->root) {
return -EAGAIN;
}
@@ -119,8 +116,9 @@ static int pnp_dock_event(int dock, struct pnp_docking_station_info *info)
return -ENOMEM;
}
- /* only one standardized param to hotplug command: type */
- argv [0] = hotplug_path;
+ /* FIXME: if there are actual users of this, it should be integrated into
+ * the driver core and use the usual infrastructure like sysfs and uevents */
+ argv [0] = "/sbin/pnpbios";
argv [1] = "dock";
argv [2] = NULL;