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powerpc/pasemi: Add Nemo board IRQ initroutine 

Add a IRQ init routine for the Nemo board which inits and attatches
the i8259 found in the SB600, and a cascade routine to dispatch the
interrupts.

Signed-off-by: Darren Stevens <darren@stevens-zone.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Darren Stevens 2018-08-19 21:26:28 +01:00 committed by Michael Ellerman
parent 656fdf3ad8
commit 51f4cc2047
2 changed files with 26 additions and 0 deletions
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11
arch/powerpc/platforms/pasemi/pci.c
View File

@ -27,6 +27,7 @@
#include <linux/pci.h>
#include <asm/pci-bridge.h>
#include <asm/isa-bridge.h>
#include <asm/machdep.h>
#include <asm/ppc-pci.h>
@ -181,6 +182,8 @@ static int pa_pxp_read_config(struct pci_bus *bus, unsigned int devfn,
addr = pa_pxp_cfg_addr(hose, bus->number, devfn, offset);
sb600_set_flag(bus->number);
/*
* Note: the caller has already checked that offset is
* suitably aligned and that len is 1, 2 or 4.
@ -215,6 +218,8 @@ static int pa_pxp_write_config(struct pci_bus *bus, unsigned int devfn,
addr = pa_pxp_cfg_addr(hose, bus->number, devfn, offset);
sb600_set_flag(bus->number);
/*
* Note: the caller has already checked that offset is
* suitably aligned and that len is 1, 2 or 4.
@ -265,6 +270,12 @@ static int __init pas_add_bridge(struct device_node *dev)
/* Interpret the "ranges" property */
pci_process_bridge_OF_ranges(hose, dev, 1);
/*
* Scan for an isa bridge. This is needed to find the SB600 on the nemo
* and does nothing on machines without one.
*/
isa_bridge_find_early(hose);
return 0;
}

15
arch/powerpc/platforms/pasemi/setup.c
View File

@ -314,6 +314,8 @@ static __init void pas_init_IRQ(void)
mpic_unmask_irq(irq_get_irq_data(nmi_virq));
}
nemo_init_IRQ(mpic);
of_node_put(mpic_node);
of_node_put(root);
}
@ -475,6 +477,8 @@ static int __init pasemi_publish_devices(void)
/* Publish OF platform devices for SDC and other non-PCI devices */
of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);
nemo_init_rtc();
return 0;
}
machine_device_initcall(pasemi, pasemi_publish_devices);
@ -489,6 +493,17 @@ static int __init pas_probe(void)
!of_machine_is_compatible("pasemi,pwrficient"))
return 0;
#ifdef CONFIG_PPC_PASEMI_NEMO
/*
* Check for the Nemo motherboard here, if we are running on one
* change the machine definition to fit
*/
if (of_machine_is_compatible("pasemi,nemo")) {
pm_power_off = pas_shutdown;
ppc_md.name = "A-EON Amigaone X1000";
}
#endif
iommu_init_early_pasemi();
return 1;