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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-06-27 08:55:19 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-07-01 09:57:01 +1000 |
| commit | 4b236b621bf090509c4a0be372edfd31d13b289a (patch) | |
| tree | 6a68f8e5a2f3dafbc1762427efc37abd3855219a /hw/ppc/ppc.c | |
| parent | b378bb0948277d71c78bc6d0c1ef80a253aafc80 (diff) | |
| download | qemu-4b236b621bf090509c4a0be372edfd31d13b289a.zip qemu-4b236b621bf090509c4a0be372edfd31d13b289a.tar.gz qemu-4b236b621bf090509c4a0be372edfd31d13b289a.tar.bz2 | |
ppc: Initial HDEC support
The current behaviour isn't completely right, as for the DEC, we
don't properly re-arm when wrapping around, but I will fix this
in a separate patch.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[clg: fixed checkpatch.pl errors ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/ppc/ppc.c')
| -rw-r--r-- | hw/ppc/ppc.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c index 1bcf740..e425252 100644 --- a/hw/ppc/ppc.c +++ b/hw/ppc/ppc.c @@ -699,9 +699,18 @@ static inline void cpu_ppc_decr_lower(PowerPCCPU *cpu) static inline void cpu_ppc_hdecr_excp(PowerPCCPU *cpu) { + CPUPPCState *env = &cpu->env; + /* Raise it */ - LOG_TB("raise decrementer exception\n"); - ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 1); + LOG_TB("raise hv decrementer exception\n"); + + /* The architecture specifies that we don't deliver HDEC + * interrupts in a PM state. Not only they don't cause a + * wakeup but they also get effectively discarded. + */ + if (!env->in_pm_state) { + ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 1); + } } static inline void cpu_ppc_hdecr_lower(PowerPCCPU *cpu) @@ -928,9 +937,7 @@ clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq) } /* Create new timer */ tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_decr_cb, cpu); - if (0) { - /* XXX: find a suitable condition to enable the hypervisor decrementer - */ + if (env->has_hv_mode) { tb_env->hdecr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_hdecr_cb, cpu); } else { |