lkml.org 
[lkml]   [2022]   [Nov]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[patch 30/39] PCI/MSI: Move pci_msi_restore_state() to api.c
    Date
    From: Ahmed S. Darwish <darwi@linutronix.de>

    To distangle the maze in msi.c, all exported device-driver MSI APIs are
    now to be grouped in one file, api.c.

    Move pci_msi_enabled() and add kernel-doc for the function.

    Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

    diff --git a/drivers/pci/msi/api.c b/drivers/pci/msi/api.c
    index ee9ed5ccd94d..8d1cf6db9bd7 100644
    --- a/drivers/pci/msi/api.c
    +++ b/drivers/pci/msi/api.c
    @@ -308,6 +308,21 @@ void pci_free_irq_vectors(struct pci_dev *dev)
    }
    EXPORT_SYMBOL(pci_free_irq_vectors);

    +/**
    + * pci_restore_msi_state() - Restore cached MSI(-X) state on device
    + * @dev: the PCI device to operate on
    + *
    + * Write the Linux-cached MSI(-X) state back on device. This is
    + * typically useful upon system resume, or after an error-recovery PCI
    + * adapter reset.
    + */
    +void pci_restore_msi_state(struct pci_dev *dev)
    +{
    + __pci_restore_msi_state(dev);
    + __pci_restore_msix_state(dev);
    +}
    +EXPORT_SYMBOL_GPL(pci_restore_msi_state);
    +
    /**
    * pci_msi_enabled() - Are MSI(-X) interrupts enabled system-wide?
    *
    diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c
    index 59c33bc7fe81..a5d168c823ff 100644
    --- a/drivers/pci/msi/msi.c
    +++ b/drivers/pci/msi/msi.c
    @@ -199,7 +199,7 @@ bool __weak arch_restore_msi_irqs(struct pci_dev *dev)
    return true;
    }

    -static void __pci_restore_msi_state(struct pci_dev *dev)
    +void __pci_restore_msi_state(struct pci_dev *dev)
    {
    struct msi_desc *entry;
    u16 control;
    @@ -231,7 +231,7 @@ static void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
    pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
    }

    -static void __pci_restore_msix_state(struct pci_dev *dev)
    +void __pci_restore_msix_state(struct pci_dev *dev)
    {
    struct msi_desc *entry;
    bool write_msg;
    @@ -257,13 +257,6 @@ static void __pci_restore_msix_state(struct pci_dev *dev)
    pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_MASKALL, 0);
    }

    -void pci_restore_msi_state(struct pci_dev *dev)
    -{
    - __pci_restore_msi_state(dev);
    - __pci_restore_msix_state(dev);
    -}
    -EXPORT_SYMBOL_GPL(pci_restore_msi_state);
    -
    static void pcim_msi_release(void *pcidev)
    {
    struct pci_dev *dev = pcidev;
    diff --git a/drivers/pci/msi/msi.h b/drivers/pci/msi/msi.h
    index f3f4ede53171..8170ef2c5ad0 100644
    --- a/drivers/pci/msi/msi.h
    +++ b/drivers/pci/msi/msi.h
    @@ -94,6 +94,8 @@ void pci_free_msi_irqs(struct pci_dev *dev);
    int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec, struct irq_affinity *affd);
    int __pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int minvec,
    int maxvec, struct irq_affinity *affd, int flags);
    +void __pci_restore_msi_state(struct pci_dev *dev);
    +void __pci_restore_msix_state(struct pci_dev *dev);

    /* Legacy (!IRQDOMAIN) fallbacks */

    \
     
     \ /
      Last update: 2022-11-11 14:58    [W:4.038 / U:0.152 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site