From: Zhao Chenhui <b26...@freescale.com> Put all fsl_msi banks in a linked list. The list of banks then can be traversed when allocating new msi interrupts.
Signed-off-by: Zhao Chenhui <b26...@freescale.com> Signed-off-by: Li Yang <le...@freescale.com> --- arch/powerpc/sysdev/fsl_msi.c | 29 ++++++++++++++++++++++------- arch/powerpc/sysdev/fsl_msi.h | 2 ++ 2 files changed, 24 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index 716862f..c46db75 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -24,6 +24,8 @@ #include <asm/mpic.h> #include "fsl_msi.h" +LIST_HEAD(msi_head); + struct fsl_msi_feature { u32 fsl_pic_ip; u32 msiir_offset; @@ -143,15 +145,26 @@ static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) struct msi_msg msg; struct fsl_msi *msi_data; + if (list_empty(&msi_head)) { + pr_debug("%s: msi init error\n", __func__); + rc = -EFAULT; + goto out_free; + } + list_for_each_entry(entry, &pdev->msi_list, list) { - msi_data = get_irq_chip_data(entry->irq); - hwirq = msi_bitmap_alloc_hwirqs(&msi_data->bitmap, 1); - if (hwirq < 0) { - rc = hwirq; - pr_debug("%s: fail allocating msi interrupt\n", - __func__); - goto out_free; + list_for_each_entry(msi_data, &msi_head, list) { + + hwirq = msi_bitmap_alloc_hwirqs(&msi_data->bitmap, 1); + if (hwirq >= 0) + break; + + if (list_is_last(&msi_data->list, &msi_head)) { + rc = hwirq; + pr_debug("%s: fail allocating msi interrupt\n", + __func__); + goto out_free; + } } virq = irq_create_mapping(msi_data->irqhost, hwirq); @@ -335,6 +348,8 @@ static int __devinit fsl_of_msi_probe(struct of_device *dev, } } + list_add_tail(&msi->list, &msi_head); + /* The multiple setting ppc_md.setup_msi_irqs will not harm things */ if (!ppc_md.setup_msi_irqs) { ppc_md.setup_msi_irqs = fsl_setup_msi_irqs; diff --git a/arch/powerpc/sysdev/fsl_msi.h b/arch/powerpc/sysdev/fsl_msi.h index 331c7e7..8fc5523 100644 --- a/arch/powerpc/sysdev/fsl_msi.h +++ b/arch/powerpc/sysdev/fsl_msi.h @@ -34,6 +34,8 @@ struct fsl_msi { u32 feature; struct msi_bitmap bitmap; + + struct list_head list; /* support multiple MSI banks */ }; #endif /* _POWERPC_SYSDEV_FSL_MSI_H */ -- 1.6.6-rc1.GIT _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev