[POWERPC] PS3: Move chip mask defs up
This just moves the definitions of the PS3 chip_mask routines up above the irq setup routines. This change is needed for the kexec updates that follow. Also adds some inline documentation to the routines. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Geoff Levand
Paul Mackerras
Родитель
dc23fba706
Коммит
743c1bb074
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@ -90,6 +90,92 @@ struct ps3_private {
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static DEFINE_PER_CPU(struct ps3_private, ps3_private);
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/**
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* ps3_chip_mask - Set an interrupt mask bit in ps3_bmp.
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* @virq: The assigned Linux virq.
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*
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* Sets ps3_bmp.mask and calls lv1_did_update_interrupt_mask().
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*/
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static void ps3_chip_mask(unsigned int virq)
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{
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struct ps3_private *pd = get_irq_chip_data(virq);
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u64 bit = 0x8000000000000000UL >> virq;
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u64 *p = &pd->bmp.mask;
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u64 old;
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unsigned long flags;
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pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq);
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local_irq_save(flags);
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asm volatile(
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"1: ldarx %0,0,%3\n"
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"andc %0,%0,%2\n"
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"stdcx. %0,0,%3\n"
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"bne- 1b"
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: "=&r" (old), "+m" (*p)
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: "r" (bit), "r" (p)
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: "cc" );
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lv1_did_update_interrupt_mask(pd->node, pd->cpu);
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local_irq_restore(flags);
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}
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/**
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* ps3_chip_unmask - Clear an interrupt mask bit in ps3_bmp.
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* @virq: The assigned Linux virq.
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*
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* Clears ps3_bmp.mask and calls lv1_did_update_interrupt_mask().
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*/
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static void ps3_chip_unmask(unsigned int virq)
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{
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struct ps3_private *pd = get_irq_chip_data(virq);
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u64 bit = 0x8000000000000000UL >> virq;
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u64 *p = &pd->bmp.mask;
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u64 old;
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unsigned long flags;
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pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq);
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local_irq_save(flags);
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asm volatile(
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"1: ldarx %0,0,%3\n"
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"or %0,%0,%2\n"
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"stdcx. %0,0,%3\n"
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"bne- 1b"
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: "=&r" (old), "+m" (*p)
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: "r" (bit), "r" (p)
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: "cc" );
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lv1_did_update_interrupt_mask(pd->node, pd->cpu);
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local_irq_restore(flags);
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}
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/**
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* ps3_chip_eoi - HV end-of-interrupt.
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* @virq: The assigned Linux virq.
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*
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* Calls lv1_end_of_interrupt_ext().
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*/
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static void ps3_chip_eoi(unsigned int virq)
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{
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const struct ps3_private *pd = get_irq_chip_data(virq);
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lv1_end_of_interrupt_ext(pd->node, pd->cpu, virq);
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}
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/**
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* ps3_irq_chip - Represents the ps3_bmp as a Linux struct irq_chip.
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*/
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static struct irq_chip ps3_irq_chip = {
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.typename = "ps3",
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.mask = ps3_chip_mask,
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.unmask = ps3_chip_unmask,
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.eoi = ps3_chip_eoi,
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};
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/**
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* ps3_virq_setup - virq related setup.
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* @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
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@ -565,67 +651,6 @@ static void __maybe_unused _dump_mask(struct ps3_private *pd,
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static void dump_bmp(struct ps3_private* pd) {};
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#endif /* defined(DEBUG) */
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static void ps3_chip_mask(unsigned int virq)
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{
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struct ps3_private *pd = get_irq_chip_data(virq);
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u64 bit = 0x8000000000000000UL >> virq;
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u64 *p = &pd->bmp.mask;
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u64 old;
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unsigned long flags;
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pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq);
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local_irq_save(flags);
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asm volatile(
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"1: ldarx %0,0,%3\n"
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"andc %0,%0,%2\n"
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"stdcx. %0,0,%3\n"
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"bne- 1b"
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: "=&r" (old), "+m" (*p)
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: "r" (bit), "r" (p)
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: "cc" );
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lv1_did_update_interrupt_mask(pd->node, pd->cpu);
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local_irq_restore(flags);
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}
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static void ps3_chip_unmask(unsigned int virq)
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{
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struct ps3_private *pd = get_irq_chip_data(virq);
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u64 bit = 0x8000000000000000UL >> virq;
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u64 *p = &pd->bmp.mask;
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u64 old;
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unsigned long flags;
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pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq);
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local_irq_save(flags);
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asm volatile(
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"1: ldarx %0,0,%3\n"
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"or %0,%0,%2\n"
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"stdcx. %0,0,%3\n"
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"bne- 1b"
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: "=&r" (old), "+m" (*p)
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: "r" (bit), "r" (p)
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: "cc" );
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lv1_did_update_interrupt_mask(pd->node, pd->cpu);
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local_irq_restore(flags);
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}
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static void ps3_chip_eoi(unsigned int virq)
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{
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const struct ps3_private *pd = get_irq_chip_data(virq);
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lv1_end_of_interrupt_ext(pd->node, pd->cpu, virq);
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}
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static struct irq_chip irq_chip = {
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.typename = "ps3",
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.mask = ps3_chip_mask,
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.unmask = ps3_chip_unmask,
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.eoi = ps3_chip_eoi,
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};
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static void ps3_host_unmap(struct irq_host *h, unsigned int virq)
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{
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set_irq_chip_data(virq, NULL);
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