/*
- * $Id: pci.c,v 1.91 1999/01/21 13:34:01 davem Exp $
- *
* PCI Bus Services, see include/linux/pci.h for further explanation.
*
* Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter,
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/log2.h>
+#include <linux/pci-aspm.h>
#include <asm/dma.h> /* isa_dma_bridge_buggy */
#include "pci.h"
pci_update_resource(dev, &dev->resource[i], i);
}
-int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
+static struct pci_platform_pm_ops *pci_platform_pm;
+
+int pci_set_platform_pm(struct pci_platform_pm_ops *ops)
+{
+ if (!ops->is_manageable || !ops->set_state || !ops->choose_state)
+ return -EINVAL;
+ pci_platform_pm = ops;
+ return 0;
+}
+
+static inline bool platform_pci_power_manageable(struct pci_dev *dev)
+{
+ return pci_platform_pm ? pci_platform_pm->is_manageable(dev) : false;
+}
+
+static inline int platform_pci_set_power_state(struct pci_dev *dev,
+ pci_power_t t)
+{
+ return pci_platform_pm ? pci_platform_pm->set_state(dev, t) : -ENOSYS;
+}
+
+static inline pci_power_t platform_pci_choose_state(struct pci_dev *dev)
+{
+ return pci_platform_pm ?
+ pci_platform_pm->choose_state(dev) : PCI_POWER_ERROR;
+}
/**
* pci_set_power_state - Set the power state of a PCI device
* to sleep if we're already in a low power state
*/
if (state != PCI_D0 && dev->current_state > state) {
- printk(KERN_ERR "%s(): %s: state=%d, current state=%d\n",
- __FUNCTION__, pci_name(dev), state, dev->current_state);
+ dev_err(&dev->dev, "invalid power transition "
+ "(from state %d to %d)\n", dev->current_state, state);
return -EINVAL;
} else if (dev->current_state == state)
return 0; /* we're already there */
pci_read_config_word(dev,pm + PCI_PM_PMC,&pmc);
if ((pmc & PCI_PM_CAP_VER_MASK) > 3) {
- printk(KERN_DEBUG
- "PCI: %s has unsupported PM cap regs version (%u)\n",
- pci_name(dev), pmc & PCI_PM_CAP_VER_MASK);
+ dev_printk(KERN_DEBUG, &dev->dev, "unsupported PM cap regs "
+ "version (%u)\n", pmc & PCI_PM_CAP_VER_MASK);
return -EIO;
}
* Give firmware a chance to be called, such as ACPI _PRx, _PSx
* Firmware method after native method ?
*/
- if (platform_pci_set_power_state)
- platform_pci_set_power_state(dev, state);
+ platform_pci_set_power_state(dev, state);
dev->current_state = state;
if (need_restore)
pci_restore_bars(dev);
+ if (dev->bus->self)
+ pcie_aspm_pm_state_change(dev->bus->self);
+
return 0;
}
-pci_power_t (*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
if (!pci_find_capability(dev, PCI_CAP_ID_PM))
return PCI_D0;
- if (platform_pci_choose_state) {
- ret = platform_pci_choose_state(dev, state);
- if (ret != PCI_POWER_ERROR)
- return ret;
- }
+ ret = platform_pci_choose_state(dev);
+ if (ret != PCI_POWER_ERROR)
+ return ret;
switch (state.event) {
case PM_EVENT_ON:
case PM_EVENT_HIBERNATE:
return PCI_D3hot;
default:
- printk("Unrecognized suspend event %d\n", state.event);
+ dev_info(&dev->dev, "unrecognized suspend event %d\n",
+ state.event);
BUG();
}
return PCI_D0;
else
found = 1;
if (!save_state) {
- dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
+ dev_err(&dev->dev, "out of memory in pci_save_pcie_state\n");
return -ENOMEM;
}
cap = (u16 *)&save_state->data[0];
else
found = 1;
if (!save_state) {
- dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
+ dev_err(&dev->dev, "out of memory in pci_save_pcie_state\n");
return -ENOMEM;
}
cap = (u16 *)&save_state->data[0];
for (i = 15; i >= 0; i--) {
pci_read_config_dword(dev, i * 4, &val);
if (val != dev->saved_config_space[i]) {
- printk(KERN_DEBUG "PM: Writing back config space on "
- "device %s at offset %x (was %x, writing %x)\n",
- pci_name(dev), i,
- val, (int)dev->saved_config_space[i]);
+ dev_printk(KERN_DEBUG, &dev->dev, "restoring config "
+ "space at offset %#x (was %#x, writing %#x)\n",
+ i, val, (int)dev->saved_config_space[i]);
pci_write_config_dword(dev,i * 4,
dev->saved_config_space[i]);
}
return 0;
err_out:
- printk (KERN_WARNING "PCI: Unable to reserve %s region #%d:%llx@%llx "
- "for device %s\n",
- pci_resource_flags(pdev, bar) & IORESOURCE_IO ? "I/O" : "mem",
- bar + 1, /* PCI BAR # */
- (unsigned long long)pci_resource_len(pdev, bar),
- (unsigned long long)pci_resource_start(pdev, bar),
- pci_name(pdev));
+ dev_warn(&pdev->dev, "BAR %d: can't reserve %s region [%#llx-%#llx]\n",
+ bar,
+ pci_resource_flags(pdev, bar) & IORESOURCE_IO ? "I/O" : "mem",
+ (unsigned long long)pci_resource_start(pdev, bar),
+ (unsigned long long)pci_resource_end(pdev, bar));
return -EBUSY;
}
pci_read_config_word(dev, PCI_COMMAND, &cmd);
if (! (cmd & PCI_COMMAND_MASTER)) {
- pr_debug("PCI: Enabling bus mastering for device %s\n", pci_name(dev));
+ dev_dbg(&dev->dev, "enabling bus mastering\n");
cmd |= PCI_COMMAND_MASTER;
pci_write_config_word(dev, PCI_COMMAND, cmd);
}
if (cacheline_size == pci_cache_line_size)
return 0;
- printk(KERN_DEBUG "PCI: cache line size of %d is not supported "
- "by device %s\n", pci_cache_line_size << 2, pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "cache line size of %d is not "
+ "supported\n", pci_cache_line_size << 2);
return -EINVAL;
}
pci_read_config_word(dev, PCI_COMMAND, &cmd);
if (! (cmd & PCI_COMMAND_INVALIDATE)) {
- pr_debug("PCI: Enabling Mem-Wr-Inval for device %s\n",
- pci_name(dev));
+ dev_dbg(&dev->dev, "enabling Mem-Wr-Inval\n");
cmd |= PCI_COMMAND_INVALIDATE;
pci_write_config_word(dev, PCI_COMMAND, cmd);
}
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