[IA64] genirq fixup for SGI/SN

This patch allows the system to boot and enables the console and at least
some hardware drivers, as well as some platform error handling.

Tested on a variety of SGI Altix system without issues.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Tested-by: Raymund Will <rw@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>

6 files changed, 8 insertions, 0 deletions

diff --git a/arch/ia64/sn/kernel/huberror.c b/arch/ia64/sn/kernel/huberror.c
index 08b0d9bb62ec..f925dec2da92 100644
--- a/arch/ia64/sn/kernel/huberror.c
+++ b/arch/ia64/sn/kernel/huberror.c
@@ -192,6 +192,7 @@ void hub_error_init(struct hubdev_info *hubdev_info)
                     hubdev_info);
                 return;
         }
+        irq_set_handler(SGI_II_ERROR, handle_level_irq);
         sn_set_err_irq_affinity(SGI_II_ERROR);
 }
 
@@ -213,6 +214,7 @@ void ice_error_init(struct hubdev_info *hubdev_info)
                        hubdev_info);
                 return;
         }
+        irq_set_handler(SGI_TIO_ERROR, handle_level_irq);
         sn_set_err_irq_affinity(SGI_TIO_ERROR);
 }
 
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index dfac09ab027a..62cf4dde6a04 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -352,6 +352,8 @@ void sn_irq_fixup(struct pci_dev *pci_dev, struct sn_irq_info *sn_irq_info)
         spin_lock(&sn_irq_info_lock);
         list_add_rcu(&sn_irq_info->list, sn_irq_lh[sn_irq_info->irq_irq]);
         reserve_irq_vector(sn_irq_info->irq_irq);
+        if (sn_irq_info->irq_int_bit != -1)
+                irq_set_handler(sn_irq_info->irq_irq, handle_level_irq);
         spin_unlock(&sn_irq_info_lock);
 
         register_intr_pda(sn_irq_info);
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
index 8886a0bc4a11..8dbbef4a4f47 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
@@ -146,6 +146,7 @@ pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
                 printk(KERN_WARNING
                        "pcibr cannot allocate interrupt for error handler\n");
         }
+        irq_set_handler(SGI_PCIASIC_ERROR, handle_level_irq);
         sn_set_err_irq_affinity(SGI_PCIASIC_ERROR);
 
         /* 
diff --git a/arch/ia64/sn/pci/tioca_provider.c b/arch/ia64/sn/pci/tioca_provider.c
index e77c477245fd..a70b11fd57d6 100644
--- a/arch/ia64/sn/pci/tioca_provider.c
+++ b/arch/ia64/sn/pci/tioca_provider.c
@@ -649,6 +649,7 @@ tioca_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
                        __func__, SGI_TIOCA_ERROR,
                        (int)tioca_common->ca_common.bs_persist_busnum);
 
+        irq_set_handler(SGI_TIOCA_ERROR, handle_level_irq);
         sn_set_err_irq_affinity(SGI_TIOCA_ERROR);
 
         /* Setup locality information */
diff --git a/arch/ia64/sn/pci/tioce_provider.c b/arch/ia64/sn/pci/tioce_provider.c
index 27faba035f3a..46d3df4b03a1 100644
--- a/arch/ia64/sn/pci/tioce_provider.c
+++ b/arch/ia64/sn/pci/tioce_provider.c
@@ -1037,6 +1037,7 @@ tioce_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
                        tioce_common->ce_pcibus.bs_persist_segment,
                        tioce_common->ce_pcibus.bs_persist_busnum);
 
+        irq_set_handler(SGI_PCIASIC_ERROR, handle_level_irq);
         sn_set_err_irq_affinity(SGI_PCIASIC_ERROR);
         return tioce_common;
 }
diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c
index 238c7df73ef5..8e4129c0bc93 100644
--- a/drivers/tty/serial/sn_console.c
+++ b/drivers/tty/serial/sn_console.c
@@ -743,6 +743,7 @@ static void __init sn_sal_switch_to_interrupts(struct sn_cons_port *port)
                         spin_lock_irqsave(&port->sc_port.lock, flags);
                         port->sc_port.irq = SGI_UART_VECTOR;
                         port->sc_ops = &intr_ops;
+                        irq_set_handler(port->sc_port.irq, handle_level_irq);
 
                         /* turn on receive interrupts */
                         ia64_sn_console_intr_enable(SAL_CONSOLE_INTR_RECV);