From: Jay Cornwall Date: Fri, 24 Jul 2020 23:58:48 +0000 (-0700) Subject: drm/amdkfd: Fix spurious debug exception on gfx10 X-Git-Tag: v5.10.7~1332^2~30^2~339 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ea368183ae900e376b66d3f23da22acde48e385a;p=platform%2Fkernel%2Flinux-rpi.git drm/amdkfd: Fix spurious debug exception on gfx10 s_barrier triggers a debug exception when issued with PRIV=1, DEBUG_EN=1. This causes spurious notifications to rocm-gdb. Clear MODE before issuing s_barrier and restore MODE afterwards in the context restore handler. Signed-off-by: Jay Cornwall Tested-by: Laurent Morichetti Reviewed-by: Felix Kuehling Signed-off-by: Felix Kuehling Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler.h b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler.h index 7290a30..a5cf735 100644 --- a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler.h +++ b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler.h @@ -911,7 +911,7 @@ static const uint32_t cwsr_trap_nv1x_hex[] = { 0xe0704000, 0x705d0000, 0x807c817c, 0x8070ff70, 0x00000080, 0xbf0a7b7c, - 0xbf85fff8, 0xbf820150, + 0xbf85fff8, 0xbf820152, 0xbef4037e, 0x8775ff7f, 0x0000ffff, 0x8875ff75, 0x00040000, 0xbef60380, @@ -1024,62 +1024,63 @@ static const uint32_t cwsr_trap_nv1x_hex[] = { 0xbe863106, 0xbe883108, 0xbe8a310a, 0xbe8c310c, 0xbe8e310e, 0xbf06807c, - 0xbf84fff0, 0xb9782a05, - 0x80788178, 0xbf0d9972, - 0xbf850002, 0x8f788978, - 0xbf820001, 0x8f788a78, - 0xb96e1e06, 0x8f6e8a6e, - 0x80786e78, 0x8078ff78, - 0x00000200, 0xbef603ff, - 0x01000000, 0xf4211bfa, + 0xbf84fff0, 0xba80f801, + 0x00000000, 0xbf8a0000, + 0xb9782a05, 0x80788178, + 0xbf0d9972, 0xbf850002, + 0x8f788978, 0xbf820001, + 0x8f788a78, 0xb96e1e06, + 0x8f6e8a6e, 0x80786e78, + 0x8078ff78, 0x00000200, + 0xbef603ff, 0x01000000, + 0xf4211bfa, 0xf0000000, + 0x80788478, 0xf4211b3a, 0xf0000000, 0x80788478, - 0xf4211b3a, 0xf0000000, - 0x80788478, 0xf4211b7a, + 0xf4211b7a, 0xf0000000, + 0x80788478, 0xf4211c3a, 0xf0000000, 0x80788478, - 0xf4211c3a, 0xf0000000, - 0x80788478, 0xf4211c7a, + 0xf4211c7a, 0xf0000000, + 0x80788478, 0xf4211eba, 0xf0000000, 0x80788478, - 0xf4211eba, 0xf0000000, - 0x80788478, 0xf4211efa, + 0xf4211efa, 0xf0000000, + 0x80788478, 0xf4211e7a, 0xf0000000, 0x80788478, - 0xf4211e7a, 0xf0000000, - 0x80788478, 0x80788478, - 0xf4211cfa, 0xf0000000, - 0x80788478, 0xf4211bba, + 0x80788478, 0xf4211cfa, 0xf0000000, 0x80788478, - 0xbf8cc07f, 0xb9eef814, 0xf4211bba, 0xf0000000, 0x80788478, 0xbf8cc07f, - 0xb9eef815, 0xbefc036f, - 0xbefe0370, 0xbeff0371, - 0x876f7bff, 0x000003ff, - 0xb9ef4803, 0xb9f9f816, - 0x876f7bff, 0xfffff800, - 0x906f8b6f, 0xb9efa2c3, - 0xb9f3f801, 0xb96e2a05, - 0x806e816e, 0xbf0d9972, - 0xbf850002, 0x8f6e896e, - 0xbf820001, 0x8f6e8a6e, - 0x806eff6e, 0x00000200, - 0x806e746e, 0x826f8075, - 0x876fff6f, 0x0000ffff, - 0xf4091c37, 0xfa000050, - 0xf4091d37, 0xfa000060, - 0xf4011e77, 0xfa000074, - 0xbf8cc07f, 0x876fff6d, - 0xfc000000, 0x906f9a6f, - 0x8f6f906f, 0xbeee0380, + 0xb9eef814, 0xf4211bba, + 0xf0000000, 0x80788478, + 0xbf8cc07f, 0xb9eef815, + 0xbefc036f, 0xbefe0370, + 0xbeff0371, 0x876f7bff, + 0x000003ff, 0xb9ef4803, + 0xb9f9f816, 0x876f7bff, + 0xfffff800, 0x906f8b6f, + 0xb9efa2c3, 0xb9f3f801, + 0xb96e2a05, 0x806e816e, + 0xbf0d9972, 0xbf850002, + 0x8f6e896e, 0xbf820001, + 0x8f6e8a6e, 0x806eff6e, + 0x00000200, 0x806e746e, + 0x826f8075, 0x876fff6f, + 0x0000ffff, 0xf4091c37, + 0xfa000050, 0xf4091d37, + 0xfa000060, 0xf4011e77, + 0xfa000074, 0xbf8cc07f, + 0x876fff6d, 0xfc000000, + 0x906f9a6f, 0x8f6f906f, + 0xbeee0380, 0x886e6f6e, + 0x876fff6d, 0x02000000, + 0x906f996f, 0x8f6f8f6f, 0x886e6f6e, 0x876fff6d, - 0x02000000, 0x906f996f, - 0x8f6f8f6f, 0x886e6f6e, - 0x876fff6d, 0x01000000, - 0x906f986f, 0x8f6f996f, - 0x886e6f6e, 0x876fff7a, - 0x00800000, 0x906f976f, - 0xb9eef807, 0x876dff6d, - 0x0000ffff, 0x87fe7e7e, - 0x87ea6a6a, 0xb9faf802, - 0xbf8a0000, 0xbe80226c, + 0x01000000, 0x906f986f, + 0x8f6f996f, 0x886e6f6e, + 0x876fff7a, 0x00800000, + 0x906f976f, 0xb9eef807, + 0x876dff6d, 0x0000ffff, + 0x87fe7e7e, 0x87ea6a6a, + 0xb9faf802, 0xbe80226c, 0xbf810000, 0xbf9f0000, 0xbf9f0000, 0xbf9f0000, 0xbf9f0000, 0xbf9f0000, @@ -1808,7 +1809,7 @@ static const uint32_t cwsr_trap_gfx10_hex[] = { 0xe0704000, 0x705d0000, 0x807c817c, 0x8070ff70, 0x00000080, 0xbf0a7b7c, - 0xbf85fff8, 0xbf82013b, + 0xbf85fff8, 0xbf82013d, 0xbef4037e, 0x8775ff7f, 0x0000ffff, 0x8875ff75, 0x00040000, 0xbef60380, @@ -1921,51 +1922,52 @@ static const uint32_t cwsr_trap_gfx10_hex[] = { 0xbe863106, 0xbe883108, 0xbe8a310a, 0xbe8c310c, 0xbe8e310e, 0xbf06807c, - 0xbf84fff0, 0xb9782a05, - 0x80788178, 0xbf0d9972, - 0xbf850002, 0x8f788978, - 0xbf820001, 0x8f788a78, - 0xb96e1e06, 0x8f6e8a6e, - 0x80786e78, 0x8078ff78, - 0x00000200, 0xbef603ff, - 0x01000000, 0xf4211bfa, + 0xbf84fff0, 0xba80f801, + 0x00000000, 0xbf8a0000, + 0xb9782a05, 0x80788178, + 0xbf0d9972, 0xbf850002, + 0x8f788978, 0xbf820001, + 0x8f788a78, 0xb96e1e06, + 0x8f6e8a6e, 0x80786e78, + 0x8078ff78, 0x00000200, + 0xbef603ff, 0x01000000, + 0xf4211bfa, 0xf0000000, + 0x80788478, 0xf4211b3a, 0xf0000000, 0x80788478, - 0xf4211b3a, 0xf0000000, - 0x80788478, 0xf4211b7a, + 0xf4211b7a, 0xf0000000, + 0x80788478, 0xf4211c3a, 0xf0000000, 0x80788478, - 0xf4211c3a, 0xf0000000, - 0x80788478, 0xf4211c7a, + 0xf4211c7a, 0xf0000000, + 0x80788478, 0xf4211eba, 0xf0000000, 0x80788478, - 0xf4211eba, 0xf0000000, - 0x80788478, 0xf4211efa, + 0xf4211efa, 0xf0000000, + 0x80788478, 0xf4211e7a, 0xf0000000, 0x80788478, - 0xf4211e7a, 0xf0000000, - 0x80788478, 0x80788478, - 0xf4211cfa, 0xf0000000, - 0x80788478, 0xf4211bba, + 0x80788478, 0xf4211cfa, 0xf0000000, 0x80788478, - 0xbf8cc07f, 0xb9eef814, 0xf4211bba, 0xf0000000, 0x80788478, 0xbf8cc07f, - 0xb9eef815, 0xbefc036f, - 0xbefe0370, 0xbeff0371, - 0x876f7bff, 0x000003ff, - 0xb9ef4803, 0x876f7bff, - 0xfffff800, 0x906f8b6f, - 0xb9efa2c3, 0xb9f3f801, - 0xb96e2a05, 0x806e816e, - 0xbf0d9972, 0xbf850002, - 0x8f6e896e, 0xbf820001, - 0x8f6e8a6e, 0x806eff6e, - 0x00000200, 0x806e746e, - 0x826f8075, 0x876fff6f, - 0x0000ffff, 0xf4091c37, - 0xfa000050, 0xf4091d37, - 0xfa000060, 0xf4011e77, - 0xfa000074, 0xbf8cc07f, - 0x876dff6d, 0x0000ffff, - 0x87fe7e7e, 0x87ea6a6a, - 0xb9faf802, 0xbf8a0000, + 0xb9eef814, 0xf4211bba, + 0xf0000000, 0x80788478, + 0xbf8cc07f, 0xb9eef815, + 0xbefc036f, 0xbefe0370, + 0xbeff0371, 0x876f7bff, + 0x000003ff, 0xb9ef4803, + 0x876f7bff, 0xfffff800, + 0x906f8b6f, 0xb9efa2c3, + 0xb9f3f801, 0xb96e2a05, + 0x806e816e, 0xbf0d9972, + 0xbf850002, 0x8f6e896e, + 0xbf820001, 0x8f6e8a6e, + 0x806eff6e, 0x00000200, + 0x806e746e, 0x826f8075, + 0x876fff6f, 0x0000ffff, + 0xf4091c37, 0xfa000050, + 0xf4091d37, 0xfa000060, + 0xf4011e77, 0xfa000074, + 0xbf8cc07f, 0x876dff6d, + 0x0000ffff, 0x87fe7e7e, + 0x87ea6a6a, 0xb9faf802, 0xbe80226c, 0xbf810000, 0xbf9f0000, 0xbf9f0000, 0xbf9f0000, 0xbf9f0000, diff --git a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm index 4569db4..0f8e06a 100644 --- a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm +++ b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm @@ -895,6 +895,11 @@ L_RESTORE_SGPR: s_cmp_eq_u32 m0, 0 //scc = (m0 < s_sgpr_save_num) ? 1 : 0 s_cbranch_scc0 L_RESTORE_SGPR_LOOP + // s_barrier with MODE.DEBUG_EN=1, STATUS.PRIV=1 incorrectly asserts debug exception. + // Clear DEBUG_EN before and restore MODE after the barrier. + s_setreg_imm32_b32 hwreg(HW_REG_MODE), 0 + s_barrier //barrier to ensure the readiness of LDS before access attemps from any other wave in the same TG + /* restore HW registers */ L_RESTORE_HWREG: // HWREG SR memory offset : size(VGPR)+size(SVGPR)+size(SGPR) @@ -978,8 +983,6 @@ L_RESTORE_HWREG: s_and_b64 vcc, vcc, vcc // Restore STATUS.VCCZ, not writable by s_setreg_b32 s_setreg_b32 hwreg(HW_REG_STATUS), s_restore_status // SCC is included, which is changed by previous salu - s_barrier //barrier to ensure the readiness of LDS before access attemps from any other wave in the same TG - s_rfe_b64 s_restore_pc_lo //Return to the main shader program and resume execution L_END_PGM: