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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.180.131; envelope-from=brian.cain@oss.qualcomm.com; helo=mx0b-0031df01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @qualcomm.com) X-ZM-MESSAGEID: 1756786527878116600 From: Brian Cain The per-vCPU System Status Register controls many modal behaviors of the system architecture. When the SSR is updated, we trigger the necessary effects for interrupts, privilege/MMU, and HVX context mapping. Signed-off-by: Brian Cain --- target/hexagon/cpu_helper.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/target/hexagon/cpu_helper.c b/target/hexagon/cpu_helper.c index 74ce59adf4..11a9dff522 100644 --- a/target/hexagon/cpu_helper.c +++ b/target/hexagon/cpu_helper.c @@ -14,6 +14,9 @@ #else #include "hw/boards.h" #include "hw/hexagon/hexagon.h" +#include "hw/hexagon/hexagon_globalreg.h" +#include "hex_interrupts.h" +#include "hex_mmu.h" #endif #include "exec/cpu-interrupt.h" #include "exec/target_page.h" @@ -73,7 +76,35 @@ void hexagon_set_sys_pcycle_count(CPUHexagonState *env, = uint64_t cycles) =20 void hexagon_modify_ssr(CPUHexagonState *env, uint32_t new, uint32_t old) { - g_assert_not_reached(); + g_assert(bql_locked()); + + bool old_EX =3D GET_SSR_FIELD(SSR_EX, old); + bool old_UM =3D GET_SSR_FIELD(SSR_UM, old); + bool old_GM =3D GET_SSR_FIELD(SSR_GM, old); + bool old_IE =3D GET_SSR_FIELD(SSR_IE, old); + bool new_EX =3D GET_SSR_FIELD(SSR_EX, new); + bool new_UM =3D GET_SSR_FIELD(SSR_UM, new); + bool new_GM =3D GET_SSR_FIELD(SSR_GM, new); + bool new_IE =3D GET_SSR_FIELD(SSR_IE, new); + + if ((old_EX !=3D new_EX) || + (old_UM !=3D new_UM) || + (old_GM !=3D new_GM)) { + hex_mmu_mode_change(env); + } + + uint8_t old_asid =3D GET_SSR_FIELD(SSR_ASID, old); + uint8_t new_asid =3D GET_SSR_FIELD(SSR_ASID, new); + if (new_asid !=3D old_asid) { + CPUState *cs =3D env_cpu(env); + tlb_flush(cs); + } + + /* See if the interrupts have been enabled or we have exited EX mode */ + if ((new_IE && !old_IE) || + (!new_EX && old_EX)) { + hex_interrupt_update(env); + } } =20 void clear_wait_mode(CPUHexagonState *env) --=20 2.34.1