Subject: Re: PASEMI: PA6T board doesn't boot with the RC1 of kernel 4.2 anymore

From: Benjamin Herrenschmidt <[email-masked]>
Date: Mon, 13 Jul 2015 16:47:33 +1000

On Thu, 2015-07-09 at 12:52 +0300, Denis Kirjanov wrote:
> On 7/9/15, Christian Zigotzky <[email-masked]> wrote:
> > All
> >
> > I think you haven't received the SB600 patch yet. I have pasted it in
> > this email directly. Thank you for your help. I am sorry because of this
> > long patch but I hope you could help me a bit.
> 
> But the first thing then is to upstream the sb600 patch...

Well, the patch is gross ... That stuff needs to be mostly re-written,
randomly ifdef'ing things around isn't going to fly. There are also
some mentions of FW issues, can this be fixed in FW ?

Ben.
 
> >
> > Thanks
> >
> > Christian
> >
> > ------------- nemo_4.1-3.patch -------------
> >
> > diff -rupN linux-4.1/arch/powerpc/kernel/head_64.S
> > linux-4.1-nemo/arch/powerpc/kernel/head_64.S
> > --- linux-4.1/arch/powerpc/kernel/head_64.S    2015-06-22
> > 03:47:01.850778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/kernel/head_64.S    2015-06-22
> > 03:27:29.590650112 +0200
> > @@ -70,6 +70,13 @@ _GLOBAL(__start)
> >       /* NOP this out unconditionally */
> >   BEGIN_FTR_SECTION
> >       FIXUP_ENDIAN
> > +/* Hack for PWRficient platforms: Due to CFE(?) bug, the 64-bit
> > + * word at 0x8 needs to be set to 0. Patch it up here once we're
> > + * done executing it (we can be lazy and avoid invalidating
> > + * icache)
> > + */
> > +li     r0,0
> > +std    0,8(0)
> >       b    __start_initialization_multiplatform
> >   END_FTR_SECTION(0, 1)
> >
> > diff -rupN linux-4.1/arch/powerpc/kernel/pci-common.c
> > linux-4.1-nemo/arch/powerpc/kernel/pci-common.c
> > --- linux-4.1/arch/powerpc/kernel/pci-common.c    2015-06-22
> > 03:47:01.866778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/kernel/pci-common.c    2015-06-22
> > 03:27:29.603650164 +0200
> > @@ -721,6 +721,19 @@ void pci_process_bridge_OF_ranges(struct
> >                   isa_io_base =
> >                       (unsigned long)hose->io_base_virt;
> >   #endif /* CONFIG_PPC32 */
> > +
> > +
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +                       /* Workaround for lack of device tree. New for
> > kernel 3.17: range.cpu_addr instead of cpu_addr and range.size instead
> > of size Ch. Zigotzky */
> > +                       if (primary) {
> > +                               __ioremap_at(range.cpu_addr, (void
> > *)ISA_IO_BASE,
> > +                               range.size, _PAGE_NO_CACHE|_PAGE_GUARDED);
> > +                       hose->io_base_virt = (void *)_IO_BASE;
> > +               /* _IO_BASE needs unsigned long long for the kernel 3.17
> > Ch. Zigotzky */
> > +                       printk("Initialised io_base_virt 0x%lx _IO_BASE
> > 0x%llx\n", (unsigned long)hose->io_base_virt, (unsigned long long)_IO_BASE);
> > +                    }
> > +#endif
> > +
> >               /* pci_io_size and io_base_phys always represent IO
> >                * space starting at 0 so we factor in pci_addr
> >                */
> > @@ -1194,6 +1207,7 @@ static void pcibios_allocate_bus_resourc
> >                   &ioport_resource : &iomem_resource;
> >           else {
> >               pr = pci_find_parent_resource(bus->self, res);
> > +#ifndef CONFIG_PPC_PASEMI_SB600
> >               if (pr == res) {
> >                   /* this happens when the generic PCI
> >                    * code (wrongly) decides that this
> > @@ -1201,6 +1215,7 @@ static void pcibios_allocate_bus_resourc
> >                    */
> >                   continue;
> >               }
> > +#endif
> >           }
> >
> >           pr_debug("PCI: %s (bus %d) bridge rsrc %d: %016llx-%016llx "
> > @@ -1632,8 +1647,9 @@ void pcibios_scan_phb(struct pci_control
> >       pr_debug("PCI: Scanning PHB %s\n", of_node_full_name(node));
> >
> >       /* Get some IO space for the new PHB */
> > +#ifndef CONFIG_PPC_PASEMI_SB600
> >       pcibios_setup_phb_io_space(hose);
> > -
> > +#endif
> >       /* Wire up PHB bus resources */
> >       pcibios_setup_phb_resources(hose, &resources);
> >
> > diff -rupN linux-4.1/arch/powerpc/kernel/setup-common.c
> > linux-4.1-nemo/arch/powerpc/kernel/setup-common.c
> > --- linux-4.1/arch/powerpc/kernel/setup-common.c    2015-06-22
> > 03:47:01.879778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/kernel/setup-common.c    2015-06-22
> > 03:27:29.605650172 +0200
> > @@ -76,7 +76,15 @@ EXPORT_SYMBOL(ppc_md);
> >   struct machdep_calls *machine_id;
> >   EXPORT_SYMBOL(machine_id);
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +/* FIXME!!
> > + * Current PASemi code does not correctly update the value of boot_cpuid
> > + * As a temporary fix we use the default 0, which is known to work
> > + */
> > +int boot_cpuid = 0;
> > +#else
> >   int boot_cpuid = -1;
> > +#endif
> >   EXPORT_SYMBOL_GPL(boot_cpuid);
> >
> >   unsigned long klimit = (unsigned long) _end;
> > diff -rupN linux-4.1/arch/powerpc/platforms/pasemi/iommu.c
> > linux-4.1-nemo/arch/powerpc/platforms/pasemi/iommu.c
> > --- linux-4.1/arch/powerpc/platforms/pasemi/iommu.c    2015-06-22
> > 03:47:02.018778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/platforms/pasemi/iommu.c 2015-06-22
> > 03:27:29.611650196 +0200
> > @@ -1,3 +1,9 @@
> > +/* This is a modified copy of
> > +* usr/src/linux-2.6.39.4/arch/powerpc/platforms/pasemi/iommu.c
> > +* The mod is on line 150
> > +* By Len Karpowicz <[email-masked]
> > +*/
> > +
> >   /*
> >    * Copyright (C) 2005-2008, PA Semi, Inc
> >    *
> > @@ -143,8 +149,11 @@ static void iommu_table_iobmap_setup(voi
> >       iommu_table_iobmap.it_page_shift = IOBMAP_PAGE_SHIFT;
> >
> >       /* it_size is in number of entries */
> > -    iommu_table_iobmap.it_size =
> > -        0x80000000 >> iommu_table_iobmap.it_page_shift;
> > +
> > +/* Note: changed 0x80000000 to 0x7FFFFFFF for SBLive! SB0220 */
> > +/* out of range problem on A-EON AmigaOne X1000 */
> > +       iommu_table_iobmap.it_size = 0x7FFFFFFF >> IOBMAP_PAGE_SHIFT;
> > +
> >
> >       /* Initialize the common IOMMU code */
> >       iommu_table_iobmap.it_base = (unsigned long)iob_l2_base;
> > diff -rupN linux-4.1/arch/powerpc/platforms/pasemi/Kconfig
> > linux-4.1-nemo/arch/powerpc/platforms/pasemi/Kconfig
> > --- linux-4.1/arch/powerpc/platforms/pasemi/Kconfig    2015-06-22
> > 03:47:02.017778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/platforms/pasemi/Kconfig 2015-06-22
> > 03:27:29.620650232 +0200
> > @@ -14,6 +14,13 @@ config PPC_PASEMI
> >   menu "PA Semi PWRficient options"
> >       depends on PPC_PASEMI
> >
> > +config PPC_PASEMI_SB600
> > +       bool "Nemo SB600 South Bridge Support"
> > +       depends on PPC_PASEMI
> > +       select PPC_I8259
> > +       help
> > +       Workarounds for the SB600 South Bridge.
> > +
> >   config PPC_PASEMI_IOMMU
> >       bool "PA Semi IOMMU support"
> >       depends on PPC_PASEMI
> > diff -rupN linux-4.1/arch/powerpc/platforms/pasemi/pci.c
> > linux-4.1-nemo/arch/powerpc/platforms/pasemi/pci.c
> > --- linux-4.1/arch/powerpc/platforms/pasemi/pci.c    2015-06-22
> > 03:47:02.019778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/platforms/pasemi/pci.c    2015-06-22
> > 03:27:29.621650236 +0200
> > @@ -108,6 +108,69 @@ static int workaround_5945(struct pci_bu
> >       return 1;
> >   }
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +static int sb600_bus = 5;
> > +static void __iomem *iob_mapbase = NULL;
> > +
> > +static int pa_pxp_read_config(struct pci_bus *bus, unsigned int devfn,
> > +                             int offset, int len, u32 *val);
> > +
> > +static void sb600_set_flag(int bus)
> > +{
> > +    struct resource res;
> > +    struct device_node *dn;
> > +       struct pci_bus *busp;
> > +       u32 val;
> > +       int err;
> > +
> > +       if (sb600_bus == -1)
> > +       {
> > +               busp = pci_find_bus(0, 0);
> > +               pa_pxp_read_config(busp, PCI_DEVFN(17,0),
> > PCI_SECONDARY_BUS, 1, &val);
> > +
> > +               sb600_bus = val;
> > +
> > +               printk(KERN_CRIT "NEMO SB600 on bus %d.\n",sb600_bus);
> > +       }
> > +
> > +       if (iob_mapbase == NULL)
> > +       {
> > +        dn = of_find_compatible_node(NULL, "io-bridge",
> > "pasemi,1682m-iob");
> > +        if (!dn)
> > +        {
> > +               printk(KERN_CRIT "NEMO SB600 missing iob node\n");
> > +                       return;
> > +               }
> > +
> > +               err = of_address_to_resource(dn, 0, &res);
> > +        of_node_put(dn);
> > +
> > +               if (err)
> > +               {
> > +               printk(KERN_CRIT "NEMO SB600 missing resource\n");
> > +                       return;
> > +               }
> > +
> > +               printk(KERN_CRIT "NEMO SB600 IOB base %08lx\n",res.start);
> > +
> > +               iob_mapbase = ioremap(res.start + 0x100, 0x94);
> > +       }
> > +
> > +       if (iob_mapbase != NULL)
> > +       {
> > +               if (bus == sb600_bus)
> > +               {
> > +                       out_le32(iob_mapbase + 4, in_le32(iob_mapbase +
> > 4) | 0x800);
> > +               }
> > +               else
> > +               {
> > +                       out_le32(iob_mapbase + 4, in_le32(iob_mapbase +
> > 4) & ~0x800);
> > +               }
> > +       }
> > +}
> > +#endif
> > +
> > +
> >   static int pa_pxp_read_config(struct pci_bus *bus, unsigned int devfn,
> >                     int offset, int len, u32 *val)
> >   {
> > @@ -126,6 +189,10 @@ static int pa_pxp_read_config(struct pci
> >
> >       addr = pa_pxp_cfg_addr(hose, bus->number, devfn, offset);
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       sb600_set_flag(bus->number);
> > +#endif
> > +
> >       /*
> >        * Note: the caller has already checked that offset is
> >        * suitably aligned and that len is 1, 2 or 4.
> > diff -rupN linux-4.1/arch/powerpc/platforms/pasemi/setup.c
> > linux-4.1-nemo/arch/powerpc/platforms/pasemi/setup.c
> > --- linux-4.1/arch/powerpc/platforms/pasemi/setup.c    2015-06-22
> > 03:47:02.019778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/platforms/pasemi/setup.c 2015-06-22
> > 03:27:29.623650244 +0200
> > @@ -34,6 +34,7 @@
> >   #include <asm/prom.h>
> >   #include <asm/iommu.h>
> >   #include <asm/machdep.h>
> > +#include <asm/i8259.h>
> >   #include <asm/mpic.h>
> >   #include <asm/smp.h>
> >   #include <asm/time.h>
> > @@ -72,6 +73,17 @@ static void pas_restart(char *cmd)
> >           out_le32(reset_reg, 0x6000000);
> >   }
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +void pas_shutdown(void)
> > +{
> > +       /* (added by DStevens 19/06/13)
> > +          Set the PLD bit that makes the SB600 think the power button
> > is being pressed */
> > +       void __iomem *pld_map = ioremap(0xf5000000,4096);
> > +       while (1)
> > +               out_8(pld_map+7,0x01);
> > +}
> > +#endif
> > +
> >   #ifdef CONFIG_SMP
> >   static arch_spinlock_t timebase_lock;
> >   static unsigned long timebase;
> > @@ -183,6 +195,55 @@ static int __init pas_setup_mce_regs(voi
> >   }
> >   machine_device_initcall(pasemi, pas_setup_mce_regs);
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +static unsigned sb600_irq_to_vector(int irq)
> > +{
> > +       switch(irq) {
> > +       case 3: return 216;
> > +       case 4: return 217;
> > +       case 5: return 218;
> > +       case 6: return 219;
> > +       case 7: return 220;
> > +       case 8: return 222;
> > +       case 9: return 212;
> > +       case 10: return 213;
> > +       case 11: return 214;
> > +       case 12: return 215;
> > +       case 14: return 221;
> > +       default: return 0;
> > +       }
> > +}
> > +
> > +static void sb600_8259_cascade(unsigned int irq, struct irq_data *desc)
> > +{
> > +       unsigned int cascade_irq = i8259_irq();
> > +       unsigned vector = sb600_irq_to_vector(cascade_irq);
> > +       if (vector > 0)
> > +               generic_handle_irq(vector);
> > +       outb(0x20, 0xA0);       /* Non-specific EOI */
> > +       outb(0x20, 0x20);       /* Non-specific EOI to cascade */
> > +       desc->chip->irq_eoi(desc);
> > +}
> > +extern void i8259_unmask_irq(struct irq_data *d);
> > +
> > +__init void sb600_8259_init(void)
> > +{
> > +       int gpio_virq;
> > +
> > +       // Connect legacy i8259 controller in SB600
> > +       printk("Init i8259\n");
> > +       i8259_init(NULL, 0);
> > +
> > +       gpio_virq = irq_create_mapping(NULL, 3);
> > +       irq_set_irq_type(gpio_virq, IRQ_TYPE_LEVEL_HIGH);
> > +       irq_set_chained_handler(gpio_virq, sb600_8259_cascade);
> > +       mpic_unmask_irq(irq_get_irq_data(gpio_virq));
> > +
> > +       // Initial mapping for RTC
> > +       irq_create_mapping(NULL, 222);
> > +}
> > +#endif
> > +
> >   static __init void pas_init_IRQ(void)
> >   {
> >       struct device_node *np;
> > @@ -246,6 +307,12 @@ static __init void pas_init_IRQ(void)
> >
> >       of_node_put(mpic_node);
> >       of_node_put(root);
> > +
> > +
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       sb600_8259_init();
> > +#endif
> > +
> >   }
> >
> >   static void __init pas_progress(char *s, unsigned short hex)
> > @@ -403,12 +470,39 @@ static const struct of_device_id pasemi_
> >       {},
> >   };
> >
> > -static int __init pasemi_publish_devices(void)
> > -{
> > -    pasemi_pcmcia_init();
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +
> > +/*
> > + This should come from OF tree. See sysdev/rtc_cmos_setup for details.
> > Need to get i8259 supported correctly first, so that
> > + as the standard support hard-codes IRQ 8.
> > + */
> > +
> > +
> > +static struct resource rtc_resource[] = {{
> > +       .name = "rtc",
> > +       .start = 0x70,
> > +       .end = 0x71,
> > +       .flags = IORESOURCE_IO,
> > +}, {
> > +       .name = "rtc",
> > +       .start = 222,
> > +       .end = 222,
> > +       .flags = IORESOURCE_IRQ,
> > +}};
> > +
> > +#endif
> > +
> > +
> > + static int __init pasemi_publish_devices(void)
> > + {
> > +        pasemi_pcmcia_init();
> > +
> > +        /* Publish OF platform devices for SDC and other non-PCI devices */
> > +        of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);
> >
> > -    /* Publish OF platform devices for SDC and other non-PCI devices */
> > -    of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       platform_device_register_simple("rtc_cmos", -1, rtc_resource, 2);
> > +#endif
> >
> >       return 0;
> >   }
> > @@ -430,9 +524,20 @@ static int __init pas_probe(void)
> >
> >       alloc_iobmap_l2();
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       pm_power_off              = pas_shutdown;         // Varisys
> > provided a way to turn us off
> > +#endif
> >       return 1;
> >   }
> >
> > +
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +static int sb600_pci_probe_mode(struct pci_bus *bus)
> > +{
> > +       return PCI_PROBE_DEVTREE;
> > +}
> > +#endif
> > +
> >   define_machine(pasemi) {
> >       .name            = "PA Semi PWRficient",
> >       .probe            = pas_probe,
> > @@ -445,4 +550,7 @@ define_machine(pasemi) {
> >       .calibrate_decr        = generic_calibrate_decr,
> >       .progress        = pas_progress,
> >       .machine_check_exception = pas_machine_check_handler,
> > +#if 0 // def CONFIG_PPC_PASEMI_SB600
> > +       .pci_probe_mode = sb600_pci_probe_mode,
> > +#endif
> >   };
> > diff -rupN linux-4.1/arch/powerpc/sysdev/i8259.c
> > linux-4.1-nemo/arch/powerpc/sysdev/i8259.c
> > --- linux-4.1/arch/powerpc/sysdev/i8259.c    2015-06-22
> > 03:47:02.064778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/sysdev/i8259.c    2015-06-22
> > 03:27:29.631650275 +0200
> > @@ -103,11 +103,11 @@ static void i8259_set_irq_mask(int irq_n
> >       outb(cached_21,0x21);
> >   }
> >
> > -static void i8259_mask_irq(struct irq_data *d)
> > +void i8259_mask_irq(struct irq_data *d)
> >   {
> >       unsigned long flags;
> >
> > -    pr_debug("i8259_mask_irq(%d)\n", d->irq);
> > +    printk("i8259_mask_irq(%d)\n", d->irq);
> >
> >       raw_spin_lock_irqsave(&i8259_lock, flags);
> >       if (d->irq < 8)
> > @@ -118,11 +118,11 @@ static void i8259_mask_irq(struct irq_da
> >       raw_spin_unlock_irqrestore(&i8259_lock, flags);
> >   }
> >
> > -static void i8259_unmask_irq(struct irq_data *d)
> > +void i8259_unmask_irq(struct irq_data *d)
> >   {
> >       unsigned long flags;
> >
> > -    pr_debug("i8259_unmask_irq(%d)\n", d->irq);
> > +    printk("i8259_unmask_irq(%d)\n", d->irq);
> >
> >       raw_spin_lock_irqsave(&i8259_lock, flags);
> >       if (d->irq < 8)
> > @@ -229,6 +229,8 @@ void i8259_init(struct device_node *node
> >       /* initialize the controller */
> >       raw_spin_lock_irqsave(&i8259_lock, flags);
> >
> > +    printk("About to write to i8259\n");
> > +
> >       /* Mask all first */
> >       outb(0xff, 0xA1);
> >       outb(0xff, 0x21);
> > @@ -259,8 +261,12 @@ void i8259_init(struct device_node *node
> >       outb(cached_A1, 0xA1);
> >       outb(cached_21, 0x21);
> >
> > +    printk("Done write to i8259\n");
> > +
> >       raw_spin_unlock_irqrestore(&i8259_lock, flags);
> >
> > +#ifndef CONFIG_PPC_PASEMI_SB600
> > +
> >       /* create a legacy host */
> >       i8259_host = irq_domain_add_legacy_isa(node, &i8259_host_ops, NULL);
> >       if (i8259_host == NULL) {
> > @@ -268,6 +274,8 @@ void i8259_init(struct device_node *node
> >           return;
> >       }
> >
> > +#endif
> > +
> >       /* reserve our resources */
> >       /* XXX should we continue doing that ? it seems to cause problems
> >        * with further requesting of PCI IO resources for that range...
> > diff -rupN linux-4.1/arch/powerpc/sysdev/mpic.c
> > linux-4.1-nemo/arch/powerpc/sysdev/mpic.c
> > --- linux-4.1/arch/powerpc/sysdev/mpic.c    2015-06-22
> > 03:47:02.067778538 +0200
> > +++ linux-4.1-nemo/arch/powerpc/sysdev/mpic.c    2015-06-22
> > 03:27:29.634650287 +0200
> > @@ -661,6 +661,56 @@ static inline void mpic_eoi(struct mpic
> >    * Linux descriptor level callbacks
> >    */
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +
> > +static int sb600_vector_to_irq(unsigned vector)
> > +{
> > +       switch(vector) {
> > +       case 212: return 9;
> > +       case 213: return 10;
> > +       case 214: return 11;
> > +       case 215: return 12;
> > +       case 216: return 3;
> > +       case 217: return 4;
> > +       case 218: return 5;
> > +       case 219: return 6;
> > +       case 220: return 7;
> > +       case 221: return 14;
> > +       case 222: return 8;
> > +       default: return -1;
> > +       }
> > +}
> > +
> > +extern void i8259_mask_irq(struct irq_data *d);
> > +extern void i8259_unmask_irq(struct irq_data *d);
> > +
> > +int sb600_unmask_irq(unsigned irq)
> > +{
> > +       int vector = sb600_vector_to_irq(irq);
> > +       if (vector >= 0) {
> > +               i8259_unmask_irq(irq_get_irq_data(vector));
> > +               return 1;
> > +       } else
> > +               return 0;
> > +}
> > +
> > +int sb600_mask_irq(unsigned irq)
> > +{
> > +       int vector = sb600_vector_to_irq(irq);
> > +       if (vector >= 0) {
> > +               i8259_mask_irq(irq_get_irq_data(vector));
> > +               return 1;
> > +       } else
> > +               return 0;
> > +}
> > +
> > +int sb600_end_irq(unsigned irq)
> > +{
> > +       int vector = sb600_vector_to_irq(irq);
> > +       return (vector >= 0);
> > +}
> > +
> > +#endif
> >
> >   void mpic_unmask_irq(struct irq_data *d)
> >   {
> > @@ -668,7 +718,12 @@ void mpic_unmask_irq(struct irq_data *d)
> >       struct mpic *mpic = mpic_from_irq_data(d);
> >       unsigned int src = irqd_to_hwirq(d);
> >
> > -    DBG("%p: %s: enable_irq: %d (src %d)\n", mpic, mpic->name, d->irq,
> > src);
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       if (sb600_unmask_irq(src))
> > +               return;
> > +#endif
> > +
> > +       DBG("%p: %s: enable_irq: %d (src %d)\n", mpic, mpic->name, irq,
> > src);
> >
> >       mpic_irq_write(src, MPIC_INFO(IRQ_VECTOR_PRI),
> >                  mpic_irq_read(src, MPIC_INFO(IRQ_VECTOR_PRI)) &
> > @@ -689,7 +744,12 @@ void mpic_mask_irq(struct irq_data *d)
> >       struct mpic *mpic = mpic_from_irq_data(d);
> >       unsigned int src = irqd_to_hwirq(d);
> >
> > -    DBG("%s: disable_irq: %d (src %d)\n", mpic->name, d->irq, src);
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       if (sb600_mask_irq(src))
> > +               return;
> > +#endif
> > +
> > +       DBG("%s: disable_irq: %d (src %d)\n", mpic->name, irq, src);
> >
> >       mpic_irq_write(src, MPIC_INFO(IRQ_VECTOR_PRI),
> >                  mpic_irq_read(src, MPIC_INFO(IRQ_VECTOR_PRI)) |
> > @@ -709,6 +769,14 @@ void mpic_end_irq(struct irq_data *d)
> >   {
> >       struct mpic *mpic = mpic_from_irq_data(d);
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       unsigned int src = irqd_to_hwirq(d);
> > +
> > +       if (src >= 212 && src <= 222)
> > +               return;
> > +#endif
> > +
> > +
> >   #ifdef DEBUG_IRQ
> >       DBG("%s: end_irq: %d\n", mpic->name, d->irq);
> >   #endif
> > diff -rupN linux-4.1/drivers/ata/libata-sff.c
> > linux-4.1-nemo/drivers/ata/libata-sff.c
> > --- linux-4.1/drivers/ata/libata-sff.c    2015-06-22 03:47:03.376778537
> > +0200
> > +++ linux-4.1-nemo/drivers/ata/libata-sff.c    2015-06-22
> > 03:27:29.646650335 +0200
> > @@ -2438,9 +2438,9 @@ int ata_pci_sff_activate_host(struct ata
> >       if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
> >           u8 tmp8, mask;
> >
> > -        /* TODO: What if one channel is in native mode ... */
> > +        /* Don't look at dummy ports in the mask */
> >           pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8);
> > -        mask = (1 << 2) | (1 << 0);
> > +        mask = (! ata_port_is_dummy(host->ports[1]) << 2) | (!
> > ata_port_is_dummy(host->ports[0]) << 0);
> >           if ((tmp8 & mask) != mask)
> >               legacy_mode = 1;
> >       }
> > diff -rupN linux-4.1/drivers/ata/pata_atiixp.c
> > linux-4.1-nemo/drivers/ata/pata_atiixp.c
> > --- linux-4.1/drivers/ata/pata_atiixp.c    2015-06-22 03:47:03.384778537
> > +0200
> > +++ linux-4.1-nemo/drivers/ata/pata_atiixp.c    2015-06-22
> > 03:27:29.649650347 +0200
> > @@ -278,6 +278,11 @@ static int atiixp_init_one(struct pci_de
> >       };
> >       const struct ata_port_info *ppi[] = { &info, &info };
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       // Second port not wired on SB600, and config bit cannot be set
> > by BIOS
> > +       ppi[1] = &ata_dummy_port_info;
> > +#endif
> > +
> >       return ata_pci_bmdma_init_one(pdev, ppi, &atiixp_sht, NULL,
> >                         ATA_HOST_PARALLEL_SCAN);
> >   }
> > diff -rupN linux-4.1/drivers/ata/pata_of_platform.c
> > linux-4.1-nemo/drivers/ata/pata_of_platform.c
> > --- linux-4.1/drivers/ata/pata_of_platform.c    2015-06-22
> > 03:47:03.400778537 +0200
> > +++ linux-4.1-nemo/drivers/ata/pata_of_platform.c    2015-06-22
> > 03:27:29.653650363 +0200
> > @@ -41,14 +41,36 @@ static int pata_of_platform_probe(struct
> >           return -EINVAL;
> >       }
> >
> > -    ret = of_address_to_resource(dn, 1, &ctl_res);
> > -    if (ret) {
> > -        dev_err(&ofdev->dev, "can't get CTL address from "
> > -            "device tree\n");
> > -        return -EINVAL;
> > +    if (of_device_is_compatible(dn, "electra-ide")) {
> > +        /* Altstatus is really at offset 0x3f6 from the primary window
> > +         * on electra-ide. Adjust ctl_res and io_res accordingly.
> > +         */
> > +        ctl_res = io_res;
> > +        ctl_res.start = ctl_res.start+0x3f6;
> > +        io_res.end = ctl_res.start-1;
> > +
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       } else if (of_device_is_compatible(dn, "electra-cf")) {
> > +               /* Task regs are at 0x800, with alt status @ 0x80e in
> > the primary window
> > +                * on electra-cf. Adjust ctl_res and io_res accordingly.
> > +                */
> > +               ctl_res = io_res;
> > +               io_res.start += 0x800;
> > +               ctl_res.start = ctl_res.start + 0x80e;
> > +               io_res.end = ctl_res.start-1;
> > +#endif
> > +    } else {
> > +        ret = of_address_to_resource(dn, 1, &ctl_res);
> > +        if (ret) {
> > +            dev_err(&ofdev->dev, "can't get CTL address from "
> > +                "device tree\n");
> > +            return -EINVAL;
> > +        }
> >       }
> >
> >       irq_res = platform_get_resource(ofdev, IORESOURCE_IRQ, 0);
> > +    if (irq_res)
> > +        irq_res->flags = 0;
> >
> >       prop = of_get_property(dn, "reg-shift", NULL);
> >       if (prop)
> > @@ -65,6 +87,11 @@ static int pata_of_platform_probe(struct
> >           dev_info(&ofdev->dev, "pio-mode unspecified, assuming PIO0\n");
> >       }
> >
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       irq_res = 0;                    // force irq off (doesn't seem
> > to work)
> > +#endif
> > +
> > +
> >       pio_mask = 1 << pio_mode;
> >       pio_mask |= (1 << pio_mode) - 1;
> >
> > @@ -74,7 +101,11 @@ static int pata_of_platform_probe(struct
> >
> >   static struct of_device_id pata_of_platform_match[] = {
> >       { .compatible = "ata-generic", },
> > -    { },
> > +    { .compatible = "electra-ide", },
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       { .compatible = "electra-cf",},
> > +#endif
> > +    {},
> >   };
> >   MODULE_DEVICE_TABLE(of, pata_of_platform_match);
> >
> > diff -rupN linux-4.1/drivers/gpu/drm/radeon/radeon_pm.c
> > linux-4.1-nemo/drivers/gpu/drm/radeon/radeon_pm.c
> > --- linux-4.1/drivers/gpu/drm/radeon/radeon_pm.c    2015-06-22
> > 03:47:04.600778536 +0200
> > +++ linux-4.1-nemo/drivers/gpu/drm/radeon/radeon_pm.c    2015-06-22
> > 03:27:29.675650448 +0200
> > @@ -226,7 +226,10 @@ static void radeon_set_power_state(struc
> >           /* set memory clock */
> >           if (rdev->asic->pm.set_memory_clock && (mclk !=
> > rdev->pm.current_mclk)) {
> >               radeon_pm_debug_check_in_vbl(rdev, false);
> > +               /* D.Stevens 2012 for the A-EON AmigaOne X1000: Setting
> > memory clock only works on CAICOS and 6570, don't set for anything else
> > (We ignore 6570 here */
> > +               if (rdev->family == CHIP_CAICOS) {
> >               radeon_set_memory_clock(rdev, mclk);
> > +               }
> >               radeon_pm_debug_check_in_vbl(rdev, true);
> >               rdev->pm.current_mclk = mclk;
> >               DRM_DEBUG_DRIVER("Setting: m: %d\n", mclk);
> > @@ -1220,7 +1223,7 @@ static void radeon_pm_resume_old(struct
> >                           SET_VOLTAGE_TYPE_ASIC_VDDCI);
> >           if (rdev->pm.default_sclk)
> >               radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
> > -        if (rdev->pm.default_mclk)
> > +        if (rdev->pm.default_mclk && (rdev->family == CHIP_CAICOS))
> > /* Fix for PPC systems HD6000 >6570 by A-EON Core Linux Support Team */
> >               radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
> >       }
> >       /* asic init will reset the default power state */
> > @@ -1271,7 +1274,7 @@ dpm_resume_fail:
> >                           SET_VOLTAGE_TYPE_ASIC_VDDCI);
> >           if (rdev->pm.default_sclk)
> >               radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
> > -        if (rdev->pm.default_mclk)
> > +        if (rdev->pm.default_mclk && (rdev->family == CHIP_CAICOS))
> > /* Fix for PPC & > HD6570 by A-EON Linux Core Support Team */
> >               radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
> >       }
> >   }
> > @@ -1318,7 +1321,7 @@ static int radeon_pm_init_old(struct rad
> >                               SET_VOLTAGE_TYPE_ASIC_VDDCI);
> >               if (rdev->pm.default_sclk)
> >                   radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
> > -            if (rdev->pm.default_mclk)
> > +            if (rdev->pm.default_mclk && (rdev->family ==
> > CHIP_CAICOS))     // D.Stevens 2013: fix for >HD6570 on PPC
> >                   radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
> >           }
> >       }
> > @@ -1431,7 +1434,7 @@ dpm_failed:
> >                           SET_VOLTAGE_TYPE_ASIC_VDDCI);
> >           if (rdev->pm.default_sclk)
> >               radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
> > -        if (rdev->pm.default_mclk)
> > +        if (rdev->pm.default_mclk && (rdev->family == CHIP_CAICOS))  //
> > D.Stevens 2013: Fix for >HD6570 on ppc
> >               radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
> >       }
> >       DRM_ERROR("radeon: dpm initialization failed\n");
> > diff -rupN linux-4.1/drivers/pci/pci.c linux-4.1-nemo/drivers/pci/pci.c
> > --- linux-4.1/drivers/pci/pci.c    2015-06-22 03:47:08.817778536 +0200
> > +++ linux-4.1-nemo/drivers/pci/pci.c    2015-06-22 03:27:29.717650601 +0200
> > @@ -421,7 +421,16 @@ struct resource *pci_find_parent_resourc
> >       pci_bus_for_each_resource(bus, r, i) {
> >           if (!r)
> >               continue;
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +    /* The new code here checks for resources that are not allocated,
> > and no longer
> > +     * returns these, however the SB600 code uses this feature to
> > allocate IO ranges
> > +     * in the ISA map, and this breaks booting on the AmigaOneX1000.
> > +     * Temporary fix to get the kernel working, remove the resource
> > allocated check.
> > +     */
> > +        if (resource_contains(r, res)) {
> > +#else
> >           if (res->start && resource_contains(r, res)) {
> > +#endif
> >
> >               /*
> >                * If the window is prefetchable but the BAR is
> > diff -rupN linux-4.1/drivers/pci/probe.c linux-4.1-nemo/drivers/pci/probe.c
> > --- linux-4.1/drivers/pci/probe.c    2015-06-22 03:47:08.824778536 +0200
> > +++ linux-4.1-nemo/drivers/pci/probe.c    2015-06-22 03:27:29.720650613
> > +0200
> > @@ -363,7 +363,11 @@ static void pci_read_bridge_io(struct pc
> >           limit |= ((unsigned long) io_limit_hi << 16);
> >       }
> >
> > -    if (base <= limit) {
> > +       if (base <= limit
> > +       #ifdef CONFIG_PPC_PASEMI_SB600
> > +               || child->busn_res.start == 5
> > +       #endif
> > +              ) {
> >           res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) |
> > IORESOURCE_IO;
> >           region.start = base;
> >           region.end = limit + io_granularity - 1;
> > @@ -1609,11 +1613,14 @@ static int only_one_child(struct pci_bus
> >
> >       if (!parent || !pci_is_pcie(parent))
> >           return 0;
> > +       #ifndef CONFIG_PPC_PASEMI_SB600
> > +       // SB600 has non-zero devices on non-root bus.
> >       if (pci_pcie_type(parent) == PCI_EXP_TYPE_ROOT_PORT)
> >           return 1;
> >       if (pci_pcie_type(parent) == PCI_EXP_TYPE_DOWNSTREAM &&
> >           !pci_has_flag(PCI_SCAN_ALL_PCIE_DEVS))
> >           return 1;
> > +    #endif
> >       return 0;
> >   }
> >
> > diff -rupN linux-4.1/drivers/rtc/rtc-cmos.c
> > linux-4.1-nemo/drivers/rtc/rtc-cmos.c
> > --- linux-4.1/drivers/rtc/rtc-cmos.c    2015-06-22 03:47:09.156778536 +0200
> > +++ linux-4.1-nemo/drivers/rtc/rtc-cmos.c    2015-06-22
> > 03:27:29.742650701 +0200
> > @@ -242,6 +242,13 @@ static int cmos_read_alarm(struct device
> >       }
> >
> >       rtc_control = CMOS_READ(RTC_CONTROL);
> > +
> > +#ifdef CONFIG_PPC_PASEMI_SB600
> > +       // Nemo BIOS does not init RTC
> > +       rtc_control = rtc_control | RTC_24H;
> > +       CMOS_WRITE(rtc_control, RTC_CONTROL);
> > +#endif
> > +
> >       spin_unlock_irq(&rtc_lock);
> >
> >       if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
> > diff -rupN linux-4.1/sound/pci/hda/patch_sigmatel.c
> > linux-4.1-nemo/sound/pci/hda/patch_sigmatel.c
> > --- linux-4.1/sound/pci/hda/patch_sigmatel.c    2015-06-22
> > 03:47:15.039778536 +0200
> > +++ linux-4.1-nemo/sound/pci/hda/patch_sigmatel.c    2015-06-22
> > 03:27:29.768650804 +0200
> > @@ -166,6 +166,7 @@ enum {
> >       STAC_D965_VERBS,
> >       STAC_DELL_3ST,
> >       STAC_DELL_BIOS,
> > +    STAC_NEMO_DEFAULT,
> >       STAC_DELL_BIOS_AMIC,
> >       STAC_DELL_BIOS_SPDIF,
> >       STAC_927X_DELL_DMIC,
> > @@ -1359,6 +1360,23 @@ static const struct hda_pintbl oqo9200_p
> >       {}
> >   };
> >
> > +static const struct hda_pintbl nemo_pin_configs[] = {
> > +   { 0x0a, 0x02214020 },
> > +   { 0x0b, 0x02A19080 },
> > +   { 0x0c, 0x0181304E },
> > +   { 0x0d, 0x01014010 },
> > +   { 0x0e, 0x01A19040 },
> > +   { 0x0f, 0x01011012 },
> > +   { 0x10, 0x01016011 },
> > +   { 0x11, 0x01012014 },
> > +   { 0x12, 0x103301F0 },
> > +   { 0x13, 0x00000000 },
> > +   { 0x14, 0x00000000 },
> > +   { 0x21, 0x01442170 },
> > +   { 0x22, 0x00000000 },
> > +   { 0x23, 0x00000000 },
> > +   {}
> > +};
> >
> >   static void stac9200_fixup_panasonic(struct hda_codec *codec,
> >                        const struct hda_fixup *fix, int action)
> > @@ -3868,6 +3886,10 @@ static const struct hda_fixup stac927x_f
> >           .type = HDA_FIXUP_PINS,
> >           .v.pins = d965_5st_no_fp_pin_configs,
> >       },
> > +    [STAC_NEMO_DEFAULT] = {
> > +               .type = HDA_FIXUP_PINS,
> > +        .v.pins = nemo_pin_configs,
> > +    },
> >       [STAC_DELL_3ST] = {
> >           .type = HDA_FIXUP_PINS,
> >           .v.pins = dell_3st_pin_configs,
> > @@ -3924,6 +3946,7 @@ static const struct hda_model_fixup stac
> >       { .id = STAC_D965_5ST_NO_FP, .name = "5stack-no-fp" },
> >       { .id = STAC_DELL_3ST, .name = "dell-3stack" },
> >       { .id = STAC_DELL_BIOS, .name = "dell-bios" },
> > +    { .id = STAC_NEMO_DEFAULT, .name = "nemo-default" },
> >       { .id = STAC_DELL_BIOS_AMIC, .name = "dell-bios-amic" },
> >       { .id = STAC_927X_VOLKNOB, .name = "volknob" },
> >       {}
> > @@ -3962,6 +3985,8 @@ static const struct snd_pci_quirk stac92
> >                  "Intel D965", STAC_D965_5ST),
> >       SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_INTEL, 0xff00, 0x2500,
> >                  "Intel D965", STAC_D965_5ST),
> > +    /* Nemo */
> > +    SND_PCI_QUIRK(0x1888, 0x1000, "AmigaOne X1000", STAC_NEMO_DEFAULT),
> >       /* volume-knob fixes */
> >       SND_PCI_QUIRK_VENDOR(0x10cf, "FSC", STAC_927X_VOLKNOB),
> >       {} /* terminator */
> > @@ -5035,6 +5060,7 @@ static const struct hda_codec_preset snd
> >        { .id = 0x83847683, .name = "STAC9221D A2", .patch =
> > patch_stac922x },
> >        { .id = 0x83847618, .name = "STAC9227", .patch = patch_stac927x },
> >        { .id = 0x83847619, .name = "STAC9227", .patch = patch_stac927x },
> > +    { .id = 0x83847638, .name = "STAC92HD700", .patch = patch_stac927x },
> >        { .id = 0x83847616, .name = "STAC9228", .patch = patch_stac927x },
> >        { .id = 0x83847617, .name = "STAC9228", .patch = patch_stac927x },
> >        { .id = 0x83847614, .name = "STAC9229", .patch = patch_stac927x },
> > _______________________________________________
> > Linuxppc-dev mailing list
> > [email-masked]
> > https://lists.ozlabs.org/listinfo/linuxppc-dev
> _______________________________________________
> Linuxppc-dev mailing list
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