[IA64] hotplug/ia64: SN Hotplug Driver: SN IRQ Fixes

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / ia64 / sn / kernel / io_init.c

diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 783eb43..2f03e3f 100644 (file)
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -21,7 +21,6 @@
 #include <asm/sn/simulator.h>
 #include <asm/sn/tioca_provider.h>
 
-char master_baseio_wid;
 nasid_t master_nasid = INVALID_NASID;  /* Partition Master */
 
 struct slab_info {
@@ -231,11 +230,13 @@ static void sn_pci_fixup_slot(struct pci_dev *dev)
 {
        int idx;
        int segment = 0;
-       uint64_t size;
-       struct sn_irq_info *sn_irq_info;
-       struct pci_dev *host_pci_dev;
        int status = 0;
        struct pcibus_bussoft *bs;
+       struct pci_bus *host_pci_bus;
+       struct pci_dev *host_pci_dev;
+       struct sn_irq_info *sn_irq_info;
+       unsigned long size;
+       unsigned int bus_no, devfn;
 
        dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
        if (SN_PCIDEV_INFO(dev) <= 0)
@@ -253,7 +254,7 @@ static void sn_pci_fixup_slot(struct pci_dev *dev)
                                     (u64) __pa(SN_PCIDEV_INFO(dev)),
                                     (u64) __pa(sn_irq_info));
        if (status)
-               BUG();          /* Cannot get platform pci device information information */
+               BUG(); /* Cannot get platform pci device information */
 
        /* Copy over PIO Mapped Addresses */
        for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
@@ -275,15 +276,20 @@ static void sn_pci_fixup_slot(struct pci_dev *dev)
                        dev->resource[idx].parent = &iomem_resource;
        }
 
-       /* set up host bus linkages */
-       bs = SN_PCIBUS_BUSSOFT(dev->bus);
-       host_pci_dev =
-           pci_find_slot(SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32,
-                         SN_PCIDEV_INFO(dev)->
-                         pdi_slot_host_handle & 0xffffffff);
+       /* Using the PROMs values for the PCI host bus, get the Linux
+        * PCI host_pci_dev struct and set up host bus linkages
+        */
+
+       bus_no = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32;
+       devfn = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle & 0xffffffff;
+       host_pci_bus = pci_find_bus(pci_domain_nr(dev->bus), bus_no);
+       host_pci_dev = pci_get_slot(host_pci_bus, devfn);
+
+       SN_PCIDEV_INFO(dev)->host_pci_dev = host_pci_dev;
        SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
-           SN_PCIDEV_INFO(host_pci_dev);
+                                               SN_PCIDEV_INFO(host_pci_dev);
        SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
+       bs = SN_PCIBUS_BUSSOFT(dev->bus);
        SN_PCIDEV_INFO(dev)->pdi_pcibus_info = bs;
 
        if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
@@ -297,6 +303,9 @@ static void sn_pci_fixup_slot(struct pci_dev *dev)
                SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
                dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
                sn_irq_fixup(dev, sn_irq_info);
+       } else {
+               SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = NULL;
+               kfree(sn_irq_info);
        }
 }
 
@@ -403,11 +412,7 @@ static int __init sn_pci_init(void)
         */
        ia64_max_iommu_merge_mask = ~PAGE_MASK;
        sn_fixup_ionodes();
-       sn_irq = kmalloc(sizeof(struct sn_irq_info *) * NR_IRQS, GFP_KERNEL);
-       if (sn_irq <= 0)
-               BUG();          /* Canno afford to run out of memory. */
-       memset(sn_irq, 0, sizeof(struct sn_irq_info *) * NR_IRQS);
-
+       sn_irq_lh_init();
        sn_init_cpei_timer();
 
 #ifdef CONFIG_PROC_FS