#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/dma.h> /* isa_dma_bridge_buggy */
+#include "pci.h"
/**
* -EIO if device does not support PCI PM.
* 0 if we can successfully change the power state.
*/
-
+int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
int
pci_set_power_state(struct pci_dev *dev, pci_power_t state)
{
msleep(10);
else if (state == PCI_D2 || dev->current_state == PCI_D2)
udelay(200);
- dev->current_state = state;
+ /*
+ * Give firmware a chance to be called, such as ACPI _PRx, _PSx
+ * Firmware method after natice method ?
+ */
+ if (platform_pci_set_power_state)
+ platform_pci_set_power_state(dev, state);
+
+ dev->current_state = state;
return 0;
}
+int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
+
/**
* pci_choose_state - Choose the power state of a PCI device
* @dev: PCI device to be suspended
pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
{
+ int ret;
+
if (!pci_find_capability(dev, PCI_CAP_ID_PM))
return PCI_D0;
- switch (state) {
- case 0: return PCI_D0;
- case 3: return PCI_D3hot;
+ if (platform_pci_choose_state) {
+ ret = platform_pci_choose_state(dev, state);
+ if (ret >= 0)
+ state.event = ret;
+ }
+
+ switch (state.event) {
+ case PM_EVENT_ON:
+ return PCI_D0;
+ case PM_EVENT_FREEZE:
+ case PM_EVENT_SUSPEND:
+ return PCI_D3hot;
default:
- printk("They asked me for state %d\n", state);
+ printk("They asked me for state %d\n", state.event);
BUG();
}
return PCI_D0;
/**
* pci_save_state - save the PCI configuration space of a device before suspending
* @dev: - PCI device that we're dealing with
- * @buffer: - buffer to hold config space context
- *
- * @buffer must be large enough to hold the entire PCI 2.2 config space
- * (>= 64 bytes).
*/
int
pci_save_state(struct pci_dev *dev)
/**
* pci_restore_state - Restore the saved state of a PCI device
* @dev: - PCI device that we're dealing with
- * @buffer: - saved PCI config space
- *
*/
int
pci_restore_state(struct pci_dev *dev)
{
int err;
- dev->is_enabled = 1;
if ((err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1)))
return err;
pci_fixup_device(pci_fixup_enable, dev);
+ dev->is_enabled = 1;
return 0;
}
{
u16 pci_command;
- dev->is_enabled = 0;
- dev->is_busmaster = 0;
-
pci_read_config_word(dev, PCI_COMMAND, &pci_command);
if (pci_command & PCI_COMMAND_MASTER) {
pci_command &= ~PCI_COMMAND_MASTER;
pci_write_config_word(dev, PCI_COMMAND, pci_command);
}
+ dev->is_busmaster = 0;
pcibios_disable_device(dev);
+ dev->is_enabled = 0;
}
/**
return 0;
}
-int
-pci_dac_set_dma_mask(struct pci_dev *dev, u64 mask)
-{
- if (!pci_dac_dma_supported(dev, mask))
- return -EIO;
-
- dev->dma_mask = mask;
-
- return 0;
-}
-
int
pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
{
EXPORT_SYMBOL(pci_set_mwi);
EXPORT_SYMBOL(pci_clear_mwi);
EXPORT_SYMBOL(pci_set_dma_mask);
-EXPORT_SYMBOL(pci_dac_set_dma_mask);
EXPORT_SYMBOL(pci_set_consistent_dma_mask);
EXPORT_SYMBOL(pci_assign_resource);
EXPORT_SYMBOL(pci_find_parent_resource);