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That's all we know. X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, FROM_LOCAL_NOVOWEL=0.5, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Max Filippov Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @gmail.com) Content-Type: text/plain; charset="utf-8" When NMI is configured it is taken regardless of INTENABLE SR contents, PS.INTLEVEL or PS.EXCM. It is cleared automatically once it's taken. Add nmi_level to XtensaConfig, puth there NMI level from the overlay or XCHAL_NUM_INTLEVELS + 1 when NMI is not configured. Add NMI mask to INTENABLE SR and limit CINTLEVEL to nmi_level - 1 when determining pending IRQ level in check_interrupt(). Always take and clear pending interrupt at nmi_level in the handle_interrupt(). Signed-off-by: Max Filippov --- hw/xtensa/pic_cpu.c | 6 +++++- target/xtensa/cpu.h | 1 + target/xtensa/exc_helper.c | 23 +++++++++++++++-------- target/xtensa/overlay_tool.h | 6 +++++- 4 files changed, 26 insertions(+), 10 deletions(-) diff --git a/hw/xtensa/pic_cpu.c b/hw/xtensa/pic_cpu.c index edd53c9241c5..1d5982a9e424 100644 --- a/hw/xtensa/pic_cpu.c +++ b/hw/xtensa/pic_cpu.c @@ -35,9 +35,13 @@ void check_interrupts(CPUXtensaState *env) { CPUState *cs =3D env_cpu(env); int minlevel =3D xtensa_get_cintlevel(env); - uint32_t int_set_enabled =3D env->sregs[INTSET] & env->sregs[INTENABLE= ]; + uint32_t int_set_enabled =3D env->sregs[INTSET] & + (env->sregs[INTENABLE] | env->config->inttype_mask[INTTYPE_NMI]); int level; =20 + if (minlevel >=3D env->config->nmi_level) { + minlevel =3D env->config->nmi_level - 1; + } for (level =3D env->config->nlevel; level > minlevel; --level) { if (env->config->level_mask[level] & int_set_enabled) { env->pending_irq_level =3D level; diff --git a/target/xtensa/cpu.h b/target/xtensa/cpu.h index 65f00028501a..0c96181212a5 100644 --- a/target/xtensa/cpu.h +++ b/target/xtensa/cpu.h @@ -433,6 +433,7 @@ struct XtensaConfig { uint32_t exception_vector[EXC_MAX]; unsigned ninterrupt; unsigned nlevel; + unsigned nmi_level; uint32_t interrupt_vector[MAX_NLEVEL + MAX_NNMI + 1]; uint32_t level_mask[MAX_NLEVEL + MAX_NNMI + 1]; uint32_t inttype_mask[INTTYPE_MAX]; diff --git a/target/xtensa/exc_helper.c b/target/xtensa/exc_helper.c index 601341d13aa0..58a64e6d620e 100644 --- a/target/xtensa/exc_helper.c +++ b/target/xtensa/exc_helper.c @@ -132,11 +132,15 @@ void HELPER(intset)(CPUXtensaState *env, uint32_t v) v & env->config->inttype_mask[INTTYPE_SOFTWARE]); } =20 +static void intclear(CPUXtensaState *env, uint32_t v) +{ + atomic_and(&env->sregs[INTSET], ~v); +} + void HELPER(intclear)(CPUXtensaState *env, uint32_t v) { - atomic_and(&env->sregs[INTSET], - ~(v & (env->config->inttype_mask[INTTYPE_SOFTWARE] | - env->config->inttype_mask[INTTYPE_EDGE]))); + intclear(env, v & (env->config->inttype_mask[INTTYPE_SOFTWARE] | + env->config->inttype_mask[INTTYPE_EDGE])); } =20 static uint32_t relocated_vector(CPUXtensaState *env, uint32_t vector) @@ -159,11 +163,11 @@ static void handle_interrupt(CPUXtensaState *env) { int level =3D env->pending_irq_level; =20 - if (level > xtensa_get_cintlevel(env) && - level <=3D env->config->nlevel && - (env->config->level_mask[level] & - env->sregs[INTSET] & - env->sregs[INTENABLE])) { + if ((level > xtensa_get_cintlevel(env) && + level <=3D env->config->nlevel && + (env->config->level_mask[level] & + env->sregs[INTSET] & env->sregs[INTENABLE])) || + level =3D=3D env->config->nmi_level) { CPUState *cs =3D env_cpu(env); =20 if (level > 1) { @@ -173,6 +177,9 @@ static void handle_interrupt(CPUXtensaState *env) (env->sregs[PS] & ~PS_INTLEVEL) | level | PS_EXCM; env->pc =3D relocated_vector(env, env->config->interrupt_vector[level= ]); + if (level =3D=3D env->config->nmi_level) { + intclear(env, env->config->inttype_mask[INTTYPE_NMI]); + } } else { env->sregs[EXCCAUSE] =3D LEVEL1_INTERRUPT_CAUSE; =20 diff --git a/target/xtensa/overlay_tool.h b/target/xtensa/overlay_tool.h index a994e69b6e96..eb9f08af0bf6 100644 --- a/target/xtensa/overlay_tool.h +++ b/target/xtensa/overlay_tool.h @@ -216,6 +216,9 @@ #define XTHAL_INTTYPE_IDMA_ERR INTTYPE_IDMA_ERR #define XTHAL_INTTYPE_GS_ERR INTTYPE_GS_ERR =20 +#ifndef XCHAL_NMILEVEL +#define XCHAL_NMILEVEL (XCHAL_NUM_INTLEVELS + 1) +#endif =20 #define INTERRUPT(i) { \ .level =3D XCHAL_INT ## i ## _LEVEL, \ @@ -305,7 +308,8 @@ =20 #define INTERRUPTS_SECTION \ .ninterrupt =3D XCHAL_NUM_INTERRUPTS, \ - .nlevel =3D XCHAL_NUM_INTLEVELS, \ + .nlevel =3D XCHAL_NUM_INTLEVELS + XCHAL_HAVE_NMI, \ + .nmi_level =3D XCHAL_NMILEVEL, \ .interrupt_vector =3D INTERRUPT_VECTORS, \ .level_mask =3D LEVEL_MASKS, \ .inttype_mask =3D INTTYPE_MASKS, \ --=20 2.20.1