e55d7f737d
There are two separate flags controlling whether or not the MPIC is reset during initialization, which is completely unnecessary, and only one of them can be specified in the device tree. Also, most platforms in-tree right now do actually want to reset the MPIC during initialization anyways, which means lots of duplicate code passing the MPIC_WANTS_RESET flag. Fix all of the callers which currently do not pass the MPIC_WANTS_RESET flag to pass the MPIC_NO_RESET flag, then remove the MPIC_WANTS_RESET flag and make the code reset the MPIC by default. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
/*
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* Board setup routines for the storcenter
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*
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* Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org)
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* Copyright 2007 Andy Wilcox, Jon Loeliger
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*
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* Based on linkstation.c by G. Liakhovetski
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of
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* any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/initrd.h>
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#include <linux/of_platform.h>
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#include <asm/system.h>
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#include <asm/time.h>
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#include <asm/prom.h>
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#include <asm/mpic.h>
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#include <asm/pci-bridge.h>
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#include "mpc10x.h"
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static __initdata struct of_device_id storcenter_of_bus[] = {
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{ .name = "soc", },
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{},
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};
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static int __init storcenter_device_probe(void)
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{
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of_platform_bus_probe(NULL, storcenter_of_bus, NULL);
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return 0;
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}
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machine_device_initcall(storcenter, storcenter_device_probe);
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static int __init storcenter_add_bridge(struct device_node *dev)
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{
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#ifdef CONFIG_PCI
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int len;
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struct pci_controller *hose;
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const int *bus_range;
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printk("Adding PCI host bridge %s\n", dev->full_name);
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hose = pcibios_alloc_controller(dev);
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if (hose == NULL)
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return -ENOMEM;
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bus_range = of_get_property(dev, "bus-range", &len);
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hose->first_busno = bus_range ? bus_range[0] : 0;
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hose->last_busno = bus_range ? bus_range[1] : 0xff;
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setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0);
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/* Interpret the "ranges" property */
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/* This also maps the I/O region and sets isa_io/mem_base */
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pci_process_bridge_OF_ranges(hose, dev, 1);
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#endif
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return 0;
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}
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static void __init storcenter_setup_arch(void)
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{
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struct device_node *np;
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/* Lookup PCI host bridges */
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for_each_compatible_node(np, "pci", "mpc10x-pci")
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storcenter_add_bridge(np);
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printk(KERN_INFO "IOMEGA StorCenter\n");
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}
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/*
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* Interrupt setup and service. Interrupts on the turbostation come
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* from the four PCI slots plus onboard 8241 devices: I2C, DUART.
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*/
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static void __init storcenter_init_IRQ(void)
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{
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struct mpic *mpic;
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mpic = mpic_alloc(NULL, 0, 0, 16, 0, " OpenPIC ");
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BUG_ON(mpic == NULL);
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/*
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* 16 Serial Interrupts followed by 16 Internal Interrupts.
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* I2C is the second internal, so it is at 17, 0x11020.
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*/
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mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200);
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mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000);
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mpic_init(mpic);
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}
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static void storcenter_restart(char *cmd)
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{
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local_irq_disable();
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/* Set exception prefix high - to the firmware */
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_nmask_and_or_msr(0, MSR_IP);
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/* Wait for reset to happen */
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for (;;) ;
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}
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static int __init storcenter_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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return of_flat_dt_is_compatible(root, "iomega,storcenter");
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}
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define_machine(storcenter){
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.name = "IOMEGA StorCenter",
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.probe = storcenter_probe,
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.setup_arch = storcenter_setup_arch,
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.init_IRQ = storcenter_init_IRQ,
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.get_irq = mpic_get_irq,
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.restart = storcenter_restart,
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.calibrate_decr = generic_calibrate_decr,
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};
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