On Wed, 15 Oct 2014, Yijing Wang wrote:
> Use MSI chip framework instead of arch MSI functions to configure
> MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework.
>
> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
> ---
> Hi Sebastian,
> I dropped the Acked-by , because this version has a
> lot changes compared to last. So, I guess you may want to check it again.
I did and I agree with that one too.
Regards,
Sebastian
> ---
> arch/s390/include/asm/pci.h | 9 +++++++++
> arch/s390/pci/pci.c | 12 ++++++++++--
> 2 files changed, 19 insertions(+), 2 deletions(-)
>
> diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
> index c030900..4d41f08 100644
> --- a/arch/s390/include/asm/pci.h
> +++ b/arch/s390/include/asm/pci.h
> @@ -88,6 +88,8 @@ struct zpci_dev {
> u32 uid; /* user defined id */
> u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */
>
> + struct msi_chip *msi_chip;
> +
> /* IRQ stuff */
> u64 msi_addr; /* MSI address */
> struct airq_iv *aibv; /* adapter interrupt bit vector */
> @@ -121,6 +123,13 @@ struct zpci_dev {
> struct dentry *debugfs_perf;
> };
>
> +static inline struct msi_chip *pci_msi_chip(struct pci_bus *bus)
> +{
> + struct zpci_dev *zpci = bus->sysdata;
> +
> + return zpci->msi_chip;
> +}
> +
> static inline bool zdev_enabled(struct zpci_dev *zdev)
> {
> return (zdev->fh & (1UL << 31)) ? true : false;
> diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
> index 552b990..bf6732f 100644
> --- a/arch/s390/pci/pci.c
> +++ b/arch/s390/pci/pci.c
> @@ -358,7 +358,8 @@ static void zpci_irq_handler(struct airq_struct *airq)
> }
> }
>
> -int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
> +static int zpci_setup_msi_irqs(struct msi_chip *chip,
> + struct pci_dev *pdev, int nvec, int type)
> {
> struct zpci_dev *zdev = get_zdev(pdev);
> unsigned int hwirq, msi_vecs;
> @@ -434,7 +435,8 @@ out:
> return rc;
> }
>
> -void arch_teardown_msi_irqs(struct pci_dev *pdev)
> +static void zpci_teardown_msi_irqs(struct msi_chip *chip,
> + struct pci_dev *pdev)
> {
> struct zpci_dev *zdev = get_zdev(pdev);
> struct msi_desc *msi;
> @@ -464,6 +466,11 @@ void arch_teardown_msi_irqs(struct pci_dev *pdev)
> airq_iv_free_bit(zpci_aisb_iv, zdev->aisb);
> }
>
> +static struct msi_chip zpci_msi_chip = {
> + .setup_irqs = zpci_setup_msi_irqs,
> + .teardown_irqs = zpci_teardown_msi_irqs,
> +};
> +
> static void zpci_map_resources(struct zpci_dev *zdev)
> {
> struct pci_dev *pdev = zdev->pdev;
> @@ -749,6 +756,7 @@ static int zpci_scan_bus(struct zpci_dev *zdev)
> if (ret)
> return ret;
>
> + zdev->msi_chip = &zpci_msi_chip;
> zdev->bus = pci_scan_root_bus(NULL, ZPCI_BUS_NR, &pci_root_ops,
> zdev, &resources);
> if (!zdev->bus) {
> --
> 1.7.1
>
>
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