diff options
| -rw-r--r-- | hw/spapr.c | 26 | ||||
| -rw-r--r-- | hw/spapr.h | 1 |
2 files changed, 27 insertions, 0 deletions
diff --git a/hw/spapr.c b/hw/spapr.c index 8153c05636..afbdbc586e 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -105,6 +105,32 @@ int spapr_allocate_irq(int hint, enum xics_irq_type type) return irq; } +/* Allocate block of consequtive IRQs, returns a number of the first */ +int spapr_allocate_irq_block(int num, enum xics_irq_type type) +{ + int first = -1; + int i; + + for (i = 0; i < num; ++i) { + int irq; + + irq = spapr_allocate_irq(0, type); + if (!irq) { + return -1; + } + + if (0 == i) { + first = irq; + } + + /* If the above doesn't create a consecutive block then that's + * an internal bug */ + assert(irq == (first + i)); + } + + return first; +} + static int spapr_set_associativity(void *fdt, sPAPREnvironment *spapr) { int ret = 0, offset; diff --git a/hw/spapr.h b/hw/spapr.h index b5cf6afca5..6229769ce0 100644 --- a/hw/spapr.h +++ b/hw/spapr.h @@ -290,6 +290,7 @@ target_ulong spapr_hypercall(CPUPPCState *env, target_ulong opcode, target_ulong *args); int spapr_allocate_irq(int hint, enum xics_irq_type type); +int spapr_allocate_irq_block(int num, enum xics_irq_type type); static inline int spapr_allocate_msi(int hint) { |