diff options
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/irq.c | 37 | ||||
| -rw-r--r-- | arch/sparc64/kernel/sun4v_ivec.S | 6 |
2 files changed, 31 insertions, 12 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c index 5a92851296c0..4e9537c96778 100644 --- a/arch/sparc64/kernel/irq.c +++ b/arch/sparc64/kernel/irq.c @@ -643,27 +643,42 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino) unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino) { - unsigned long sysino, hv_err; - unsigned int virq; + struct irq_handler_data *data; + struct ino_bucket *bucket; + unsigned long hv_err, cookie; + + bucket = kzalloc(sizeof(struct ino_bucket), GFP_ATOMIC); + if (unlikely(!bucket)) + return 0; + + bucket->virt_irq = virt_irq_alloc(__irq(bucket)); + set_irq_chip(bucket->virt_irq, &sun4v_virq); - BUG_ON(devhandle & devino); + data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC); + if (unlikely(!data)) + return 0; - sysino = devhandle | devino; - BUG_ON(sysino & ~(IMAP_IGN | IMAP_INO)); + set_irq_chip_data(bucket->virt_irq, data); - hv_err = sun4v_vintr_set_cookie(devhandle, devino, sysino); + /* Catch accidental accesses to these things. IMAP/ICLR handling + * is done by hypervisor calls on sun4v platforms, not by direct + * register accesses. + */ + data->imap = ~0UL; + data->iclr = ~0UL; + + cookie = ~__pa(bucket); + hv_err = sun4v_vintr_set_cookie(devhandle, devino, cookie); if (hv_err) { prom_printf("IRQ: Fatal, cannot set cookie for [%x:%x] " "err=%lu\n", devhandle, devino, hv_err); prom_halt(); } - virq = sun4v_build_common(sysino, &sun4v_virq); - - virt_to_real_irq_table[virq].dev_handle = devhandle; - virt_to_real_irq_table[virq].dev_ino = devino; + virt_to_real_irq_table[bucket->virt_irq].dev_handle = devhandle; + virt_to_real_irq_table[bucket->virt_irq].dev_ino = devino; - return virq; + return bucket->virt_irq; } void ack_bad_irq(unsigned int virt_irq) diff --git a/arch/sparc64/kernel/sun4v_ivec.S b/arch/sparc64/kernel/sun4v_ivec.S index 16d306445912..e2f8e1b4882a 100644 --- a/arch/sparc64/kernel/sun4v_ivec.S +++ b/arch/sparc64/kernel/sun4v_ivec.S @@ -98,13 +98,17 @@ sun4v_dev_mondo: TRAP_LOAD_IRQ_WORK_PA(%g1, %g4) + /* For VIRQs, cookie is encoded as ~bucket_phys_addr */ + brlz,pt %g3, 1f + xnor %g3, %g0, %g4 + /* Get __pa(&ivector_table[IVEC]) into %g4. */ sethi %hi(ivector_table_pa), %g4 ldx [%g4 + %lo(ivector_table_pa)], %g4 sllx %g3, 4, %g3 add %g4, %g3, %g4 - ldx [%g1], %g2 +1: ldx [%g1], %g2 stxa %g2, [%g4] ASI_PHYS_USE_EC stx %g4, [%g1] |