1 files changed, 350 insertions, 129 deletions

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 75c60239cadd..44a46c92b721 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1,6 +1,4 @@
 /*
- *      $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,
@@ -19,6 +17,7 @@
 #include <linux/string.h>
 #include <linux/log2.h>
 #include <linux/pci-aspm.h>
+#include <linux/pm_wakeup.h>
 #include <asm/dma.h>    /* isa_dma_bridge_buggy */
 #include "pci.h"
 
@@ -378,74 +377,90 @@ pci_restore_bars(struct pci_dev *dev)
                 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;
 
-/**
- * pci_set_power_state - Set the power state of a PCI device
- * @dev: PCI device to be suspended
- * @state: PCI power state (D0, D1, D2, D3hot, D3cold) we're entering
- *
- * Transition a device to a new power state, using the Power Management 
- * Capabilities in the device's config space.
- *
- * RETURN VALUE: 
- * -EINVAL if trying to enter a lower state than we're already in.
- * 0 if we're already in the requested state.
- * -EIO if device does not support PCI PM.
- * 0 if we can successfully change the power state.
- */
-int
-pci_set_power_state(struct pci_dev *dev, pci_power_t state)
+int pci_set_platform_pm(struct pci_platform_pm_ops *ops)
 {
-        int pm, need_restore = 0;
-        u16 pmcsr, pmc;
+        if (!ops->is_manageable || !ops->set_state || !ops->choose_state
+            || !ops->sleep_wake || !ops->can_wakeup)
+                return -EINVAL;
+        pci_platform_pm = ops;
+        return 0;
+}
 
-        /* bound the state we're entering */
-        if (state > PCI_D3hot)
-                state = PCI_D3hot;
+static inline bool platform_pci_power_manageable(struct pci_dev *dev)
+{
+        return pci_platform_pm ? pci_platform_pm->is_manageable(dev) : false;
+}
 
-        /*
-         * If the device or the parent bridge can't support PCI PM, ignore
-         * the request if we're doing anything besides putting it into D0
-         * (which would only happen on boot).
-         */
-        if ((state == PCI_D1 || state == PCI_D2) && pci_no_d1d2(dev))
-                return 0;
+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;
+}
 
-        /* find PCI PM capability in list */
-        pm = pci_find_capability(dev, PCI_CAP_ID_PM);
+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;
+}
 
-        /* abort if the device doesn't support PM capabilities */
-        if (!pm)
+static inline bool platform_pci_can_wakeup(struct pci_dev *dev)
+{
+        return pci_platform_pm ? pci_platform_pm->can_wakeup(dev) : false;
+}
+
+static inline int platform_pci_sleep_wake(struct pci_dev *dev, bool enable)
+{
+        return pci_platform_pm ?
+                        pci_platform_pm->sleep_wake(dev, enable) : -ENODEV;
+}
+
+/**
+ * pci_raw_set_power_state - Use PCI PM registers to set the power state of
+ *                           given PCI device
+ * @dev: PCI device to handle.
+ * @state: PCI power state (D0, D1, D2, D3hot) to put the device into.
+ *
+ * RETURN VALUE:
+ * -EINVAL if the requested state is invalid.
+ * -EIO if device does not support PCI PM or its PM capabilities register has a
+ * wrong version, or device doesn't support the requested state.
+ * 0 if device already is in the requested state.
+ * 0 if device's power state has been successfully changed.
+ */
+static int
+pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
+{
+        u16 pmcsr;
+        bool need_restore = false;
+
+        if (!dev->pm_cap)
                 return -EIO;
 
+        if (state < PCI_D0 || state > PCI_D3hot)
+                return -EINVAL;
+
         /* Validate current state:
          * Can enter D0 from any state, but if we can only go deeper 
          * 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",
-                        __func__, pci_name(dev), state, dev->current_state);
+        if (dev->current_state == state) {
+                /* we're already there */
+                return 0;
+        } else if (state != PCI_D0 && dev->current_state <= PCI_D3cold
+            && dev->current_state > 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);
-                return -EIO;
         }
 
         /* check if this device supports the desired state */
-        if (state == PCI_D1 && !(pmc & PCI_PM_CAP_D1))
-                return -EIO;
-        else if (state == PCI_D2 && !(pmc & PCI_PM_CAP_D2))
+        if ((state == PCI_D1 && !dev->d1_support)
+           || (state == PCI_D2 && !dev->d2_support))
                 return -EIO;
 
-        pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
+        pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
 
         /* If we're (effectively) in D3, force entire word to 0.
          * This doesn't affect PME_Status, disables PME_En, and
@@ -461,7 +476,7 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
         case PCI_UNKNOWN: /* Boot-up */
                 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) == PCI_D3hot
                  && !(pmcsr & PCI_PM_CTRL_NO_SOFT_RESET))
-                        need_restore = 1;
+                        need_restore = true;
                 /* Fall-through: force to D0 */
         default:
                 pmcsr = 0;
@@ -469,7 +484,7 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
         }
 
         /* enter specified state */
-        pci_write_config_word(dev, pm + PCI_PM_CTRL, pmcsr);
+        pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
 
         /* Mandatory power management transition delays */
         /* see PCI PM 1.1 5.6.1 table 18 */
@@ -478,13 +493,6 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
         else if (state == PCI_D2 || dev->current_state == PCI_D2)
                 udelay(200);
 
-        /*
-         * 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);
-
         dev->current_state = state;
 
         /* According to section 5.4.1 of the "PCI BUS POWER MANAGEMENT
@@ -508,8 +516,77 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
         return 0;
 }
 
-pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev);
- 
+/**
+ * pci_update_current_state - Read PCI power state of given device from its
+ *                            PCI PM registers and cache it
+ * @dev: PCI device to handle.
+ */
+static void pci_update_current_state(struct pci_dev *dev)
+{
+        if (dev->pm_cap) {
+                u16 pmcsr;
+
+                pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
+                dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
+        }
+}
+
+/**
+ * pci_set_power_state - Set the power state of a PCI device
+ * @dev: PCI device to handle.
+ * @state: PCI power state (D0, D1, D2, D3hot) to put the device into.
+ *
+ * Transition a device to a new power state, using the platform formware and/or
+ * the device's PCI PM registers.
+ *
+ * RETURN VALUE:
+ * -EINVAL if the requested state is invalid.
+ * -EIO if device does not support PCI PM or its PM capabilities register has a
+ * wrong version, or device doesn't support the requested state.
+ * 0 if device already is in the requested state.
+ * 0 if device's power state has been successfully changed.
+ */
+int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
+{
+        int error;
+
+        /* bound the state we're entering */
+        if (state > PCI_D3hot)
+                state = PCI_D3hot;
+        else if (state < PCI_D0)
+                state = PCI_D0;
+        else if ((state == PCI_D1 || state == PCI_D2) && pci_no_d1d2(dev))
+                /*
+                 * If the device or the parent bridge do not support PCI PM,
+                 * ignore the request if we're doing anything other than putting
+                 * it into D0 (which would only happen on boot).
+                 */
+                return 0;
+
+        if (state == PCI_D0 && platform_pci_power_manageable(dev)) {
+                /*
+                 * Allow the platform to change the state, for example via ACPI
+                 * _PR0, _PS0 and some such, but do not trust it.
+                 */
+                int ret = platform_pci_set_power_state(dev, PCI_D0);
+                if (!ret)
+                        pci_update_current_state(dev);
+        }
+
+        error = pci_raw_set_power_state(dev, state);
+
+        if (state > PCI_D0 && platform_pci_power_manageable(dev)) {
+                /* Allow the platform to finalize the transition */
+                int ret = platform_pci_set_power_state(dev, state);
+                if (!ret) {
+                        pci_update_current_state(dev);
+                        error = 0;
+                }
+        }
+
+        return error;
+}
+
 /**
  * pci_choose_state - Choose the power state of a PCI device
  * @dev: PCI device to be suspended
@@ -527,11 +604,9 @@ pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
         if (!pci_find_capability(dev, PCI_CAP_ID_PM))
                 return PCI_D0;
 
-        if (platform_pci_choose_state) {
-                ret = platform_pci_choose_state(dev);
-                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:
@@ -543,7 +618,8 @@ pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
         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;
@@ -568,7 +644,7 @@ static int pci_save_pcie_state(struct pci_dev *dev)
         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];
@@ -619,7 +695,7 @@ static int pci_save_pcix_state(struct pci_dev *dev)
         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];
@@ -685,10 +761,9 @@ pci_restore_state(struct pci_dev *dev)
         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]);
                 }
@@ -961,6 +1036,46 @@ int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
 }
 
 /**
+ * pci_pme_capable - check the capability of PCI device to generate PME#
+ * @dev: PCI device to handle.
+ * @state: PCI state from which device will issue PME#.
+ */
+static bool pci_pme_capable(struct pci_dev *dev, pci_power_t state)
+{
+        if (!dev->pm_cap)
+                return false;
+
+        return !!(dev->pme_support & (1 << state));
+}
+
+/**
+ * pci_pme_active - enable or disable PCI device's PME# function
+ * @dev: PCI device to handle.
+ * @enable: 'true' to enable PME# generation; 'false' to disable it.
+ *
+ * The caller must verify that the device is capable of generating PME# before
+ * calling this function with @enable equal to 'true'.
+ */
+static void pci_pme_active(struct pci_dev *dev, bool enable)
+{
+        u16 pmcsr;
+
+        if (!dev->pm_cap)
+                return;
+
+        pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
+        /* Clear PME_Status by writing 1 to it and enable PME# */
+        pmcsr |= PCI_PM_CTRL_PME_STATUS | PCI_PM_CTRL_PME_ENABLE;
+        if (!enable)
+                pmcsr &= ~PCI_PM_CTRL_PME_ENABLE;
+
+        pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
+
+        dev_printk(KERN_INFO, &dev->dev, "PME# %s\n",
+                        enable ? "enabled" : "disabled");
+}
+
+/**
  * pci_enable_wake - enable PCI device as wakeup event source
  * @dev: PCI device affected
  * @state: PCI state from which device will issue wakeup events
@@ -971,66 +1086,173 @@ int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
  * called automatically by this routine.
  *
  * Devices with legacy power management (no standard PCI PM capabilities)
- * always require such platform hooks.  Depending on the platform, devices
- * supporting the standard PCI PME# signal may require such platform hooks;
- * they always update bits in config space to allow PME# generation.
+ * always require such platform hooks.
  *
- * -EIO is returned if the device can't ever be a wakeup event source.
- * -EINVAL is returned if the device can't generate wakeup events from
- * the specified PCI state.  Returns zero if the operation is successful.
+ * RETURN VALUE:
+ * 0 is returned on success
+ * -EINVAL is returned if device is not supposed to wake up the system
+ * Error code depending on the platform is returned if both the platform and
+ * the native mechanism fail to enable the generation of wake-up events
  */
 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable)
 {
-        int pm;
-        int status;
-        u16 value;
-
-        /* Note that drivers should verify device_may_wakeup(&dev->dev)
-         * before calling this function.  Platform code should report
-         * errors when drivers try to enable wakeup on devices that
-         * can't issue wakeups, or on which wakeups were disabled by
-         * userspace updating the /sys/devices.../power/wakeup file.
+        int error = 0;
+        bool pme_done = false;
+
+        if (!device_may_wakeup(&dev->dev))
+                return -EINVAL;
+
+        /*
+         * According to "PCI System Architecture" 4th ed. by Tom Shanley & Don
+         * Anderson we should be doing PME# wake enable followed by ACPI wake
+         * enable.  To disable wake-up we call the platform first, for symmetry.
          */
 
-        status = call_platform_enable_wakeup(&dev->dev, enable);
+        if (!enable && platform_pci_can_wakeup(dev))
+                error = platform_pci_sleep_wake(dev, false);
 
-        /* find PCI PM capability in list */
-        pm = pci_find_capability(dev, PCI_CAP_ID_PM);
+        if (!enable || pci_pme_capable(dev, state)) {
+                pci_pme_active(dev, enable);
+                pme_done = true;
+        }
 
-        /* If device doesn't support PM Capabilities, but caller wants to
-         * disable wake events, it's a NOP.  Otherwise fail unless the
-         * platform hooks handled this legacy device already.
-         */
-        if (!pm)
-                return enable ? status : 0;
+        if (enable && platform_pci_can_wakeup(dev))
+                error = platform_pci_sleep_wake(dev, true);
 
-        /* Check device's ability to generate PME# */
-        pci_read_config_word(dev,pm+PCI_PM_PMC,&value);
+        return pme_done ? 0 : error;
+}
 
-        value &= PCI_PM_CAP_PME_MASK;
-        value >>= ffs(PCI_PM_CAP_PME_MASK) - 1;   /* First bit of mask */
+/**
+ * pci_prepare_to_sleep - prepare PCI device for system-wide transition into
+ *                        a sleep state
+ * @dev: Device to handle.
+ *
+ * Choose the power state appropriate for the device depending on whether
+ * it can wake up the system and/or is power manageable by the platform
+ * (PCI_D3hot is the default) and put the device into that state.
+ */
+int pci_prepare_to_sleep(struct pci_dev *dev)
+{
+        pci_power_t target_state = PCI_D3hot;
+        int error;
 
-        /* Check if it can generate PME# from requested state. */
-        if (!value || !(value & (1 << state))) {
-                /* if it can't, revert what the platform hook changed,
-                 * always reporting the base "EINVAL, can't PME#" error
+        if (platform_pci_power_manageable(dev)) {
+                /*
+                 * Call the platform to choose the target state of the device
+                 * and enable wake-up from this state if supported.
                  */
-                if (enable)
-                        call_platform_enable_wakeup(&dev->dev, 0);
-                return enable ? -EINVAL : 0;
+                pci_power_t state = platform_pci_choose_state(dev);
+
+                switch (state) {
+                case PCI_POWER_ERROR:
+                case PCI_UNKNOWN:
+                        break;
+                case PCI_D1:
+                case PCI_D2:
+                        if (pci_no_d1d2(dev))
+                                break;
+                default:
+                        target_state = state;
+                }
+        } else if (device_may_wakeup(&dev->dev)) {
+                /*
+                 * Find the deepest state from which the device can generate
+                 * wake-up events, make it the target state and enable device
+                 * to generate PME#.
+                 */
+                if (!dev->pm_cap)
+                        return -EIO;
+
+                if (dev->pme_support) {
+                        while (target_state
+                              && !(dev->pme_support & (1 << target_state)))
+                                target_state--;
+                }
         }
 
-        pci_read_config_word(dev, pm + PCI_PM_CTRL, &value);
+        pci_enable_wake(dev, target_state, true);
 
-        /* Clear PME_Status by writing 1 to it and enable PME# */
-        value |= PCI_PM_CTRL_PME_STATUS | PCI_PM_CTRL_PME_ENABLE;
+        error = pci_set_power_state(dev, target_state);
 
-        if (!enable)
-                value &= ~PCI_PM_CTRL_PME_ENABLE;
+        if (error)
+                pci_enable_wake(dev, target_state, false);
 
-        pci_write_config_word(dev, pm + PCI_PM_CTRL, value);
+        return error;
+}
 
-        return 0;
+/**
+ * pci_back_from_sleep - turn PCI device on during system-wide transition into
+ *                       the working state a sleep state
+ * @dev: Device to handle.
+ *
+ * Disable device's sytem wake-up capability and put it into D0.
+ */
+int pci_back_from_sleep(struct pci_dev *dev)
+{
+        pci_enable_wake(dev, PCI_D0, false);
+        return pci_set_power_state(dev, PCI_D0);
+}
+
+/**
+ * pci_pm_init - Initialize PM functions of given PCI device
+ * @dev: PCI device to handle.
+ */
+void pci_pm_init(struct pci_dev *dev)
+{
+        int pm;
+        u16 pmc;
+
+        dev->pm_cap = 0;
+
+        /* find PCI PM capability in list */
+        pm = pci_find_capability(dev, PCI_CAP_ID_PM);
+        if (!pm)
+                return;
+        /* Check device's ability to generate PME# */
+        pci_read_config_word(dev, pm + PCI_PM_PMC, &pmc);
+
+        if ((pmc & PCI_PM_CAP_VER_MASK) > 3) {
+                dev_err(&dev->dev, "unsupported PM cap regs version (%u)\n",
+                        pmc & PCI_PM_CAP_VER_MASK);
+                return;
+        }
+
+        dev->pm_cap = pm;
+
+        dev->d1_support = false;
+        dev->d2_support = false;
+        if (!pci_no_d1d2(dev)) {
+                if (pmc & PCI_PM_CAP_D1) {
+                        dev_printk(KERN_DEBUG, &dev->dev, "supports D1\n");
+                        dev->d1_support = true;
+                }
+                if (pmc & PCI_PM_CAP_D2) {
+                        dev_printk(KERN_DEBUG, &dev->dev, "supports D2\n");
+                        dev->d2_support = true;
+                }
+        }
+
+        pmc &= PCI_PM_CAP_PME_MASK;
+        if (pmc) {
+                dev_printk(KERN_INFO, &dev->dev,
+                        "PME# supported from%s%s%s%s%s\n",
+                        (pmc & PCI_PM_CAP_PME_D0) ? " D0" : "",
+                        (pmc & PCI_PM_CAP_PME_D1) ? " D1" : "",
+                        (pmc & PCI_PM_CAP_PME_D2) ? " D2" : "",
+                        (pmc & PCI_PM_CAP_PME_D3) ? " D3hot" : "",
+                        (pmc & PCI_PM_CAP_PME_D3cold) ? " D3cold" : "");
+                dev->pme_support = pmc >> PCI_PM_CAP_PME_SHIFT;
+                /*
+                 * Make device's PM flags reflect the wake-up capability, but
+                 * let the user space enable it to wake up the system as needed.
+                 */
+                device_set_wakeup_capable(&dev->dev, true);
+                device_set_wakeup_enable(&dev->dev, false);
+                /* Disable the PME# generation functionality */
+                pci_pme_active(dev, false);
+        } else {
+                dev->pme_support = 0;
+        }
 }
 
 int
@@ -1116,13 +1338,11 @@ int pci_request_region(struct pci_dev *pdev, int bar, const char *res_name)
         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;
 }
 
@@ -1214,7 +1434,7 @@ pci_set_master(struct pci_dev *dev)
 
         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);
         }
@@ -1279,8 +1499,8 @@ pci_set_cacheline_size(struct pci_dev *dev)
         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;
 }
@@ -1305,8 +1525,7 @@ pci_set_mwi(struct pci_dev *dev)
 
         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);
         }
@@ -1702,5 +1921,7 @@ EXPORT_SYMBOL(pci_set_power_state);
 EXPORT_SYMBOL(pci_save_state);
 EXPORT_SYMBOL(pci_restore_state);
 EXPORT_SYMBOL(pci_enable_wake);
+EXPORT_SYMBOL(pci_prepare_to_sleep);
+EXPORT_SYMBOL(pci_back_from_sleep);
 EXPORT_SYMBOL_GPL(pci_set_pcie_reset_state);