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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240722-xtheadvector-v6-13-c9af0130fa00@rivosinc.com> References: <20240722-xtheadvector-v6-0-c9af0130fa00@rivosinc.com> In-Reply-To: <20240722-xtheadvector-v6-0-c9af0130fa00@rivosinc.com> To: Conor Dooley , Rob Herring , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Jisheng Zhang , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Samuel Holland , Jonathan Corbet , Shuah Khan , Guo Ren , Evan Green , Andy Chiu , Jessica Clarke , Andrew Jones Cc: linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Charlie Jenkins X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1721685488; l=13279; i=charlie@rivosinc.com; s=20231120; h=from:subject:message-id; bh=9w7dBpv+20Zqh2hfnY2iaYlSIT6IIR7L7F4Z0i1nJ5w=; b=0YMmpOGaS7oZHo/sNXHwzUGlBKOrsCApVVvHth9llhrg5Op2Xq33tE9qMXr8lWPmoauJahaNI ExK5NhUCkzqCMGeXKyaxd15fGW3z+LZcuFtCuvEEKQQC722azM7eLsE X-Developer-Key: i=charlie@rivosinc.com; a=ed25519; pk=t4RSWpMV1q5lf/NWIeR9z58bcje60/dbtxxmoSfBEcs= Extend existing vector tests to be compatible with the xtheadvector instructions. Signed-off-by: Charlie Jenkins --- .../selftests/riscv/vector/v_exec_initval_nolibc.c | 23 ++++-- tools/testing/selftests/riscv/vector/v_helpers.c | 17 +++- tools/testing/selftests/riscv/vector/v_helpers.h | 4 +- tools/testing/selftests/riscv/vector/v_initval.c | 12 ++- .../selftests/riscv/vector/vstate_exec_nolibc.c | 20 +++-- .../testing/selftests/riscv/vector/vstate_prctl.c | 91 ++++++++++++++----= ---- 6 files changed, 115 insertions(+), 52 deletions(-) diff --git a/tools/testing/selftests/riscv/vector/v_exec_initval_nolibc.c b= /tools/testing/selftests/riscv/vector/v_exec_initval_nolibc.c index 74b13806baf0..6f40c2acc0c2 100644 --- a/tools/testing/selftests/riscv/vector/v_exec_initval_nolibc.c +++ b/tools/testing/selftests/riscv/vector/v_exec_initval_nolibc.c @@ -18,13 +18,22 @@ int main(int argc, char **argv) unsigned long vl; int first =3D 1; =20 - asm volatile ( - ".option push\n\t" - ".option arch, +v\n\t" - "vsetvli %[vl], x0, e8, m1, ta, ma\n\t" - ".option pop\n\t" - : [vl] "=3Dr" (vl) - ); + if (argc > 2 && strcmp(argv[2], "x")) + asm volatile ( + // 0 | zimm[10:0] | rs1 | 1 1 1 | rd |1010111| vsetvli + // vsetvli t4, x0, e8, m1, d1 + ".4byte 0b00000000000000000111111011010111\n\t" + "mv %[vl], t4\n\t" + : [vl] "=3Dr" (vl) : : "t4" + ); + else + asm volatile ( + ".option push\n\t" + ".option arch, +v\n\t" + "vsetvli %[vl], x0, e8, m1, ta, ma\n\t" + ".option pop\n\t" + : [vl] "=3Dr" (vl) + ); =20 #define CHECK_VECTOR_REGISTER(register) ({ \ for (int i =3D 0; i < vl; i++) { \ diff --git a/tools/testing/selftests/riscv/vector/v_helpers.c b/tools/testi= ng/selftests/riscv/vector/v_helpers.c index d50f4dfbf9e5..01a8799dcb78 100644 --- a/tools/testing/selftests/riscv/vector/v_helpers.c +++ b/tools/testing/selftests/riscv/vector/v_helpers.c @@ -1,12 +1,22 @@ // SPDX-License-Identifier: GPL-2.0-only =20 #include "../hwprobe/hwprobe.h" +#include #include #include #include #include #include =20 +bool is_xtheadvector_supported(void) +{ + struct riscv_hwprobe pair; + + pair.key =3D RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0; + riscv_hwprobe(&pair, 1, 0, NULL, 0); + return pair.value & RISCV_HWPROBE_VENDOR_EXT_XTHEADVECTOR; +} + bool is_vector_supported(void) { struct riscv_hwprobe pair; @@ -16,9 +26,9 @@ bool is_vector_supported(void) return pair.value & RISCV_HWPROBE_EXT_ZVE32X; } =20 -int launch_test(char *next_program, int test_inherit) +int launch_test(char *next_program, int test_inherit, int xtheadvector) { - char *exec_argv[3], *exec_envp[1]; + char *exec_argv[4], *exec_envp[1]; int rc, pid, status; =20 pid =3D fork(); @@ -30,7 +40,8 @@ int launch_test(char *next_program, int test_inherit) if (!pid) { exec_argv[0] =3D next_program; exec_argv[1] =3D test_inherit !=3D 0 ? "x" : NULL; - exec_argv[2] =3D NULL; + exec_argv[2] =3D xtheadvector !=3D 0 ? "x" : NULL; + exec_argv[3] =3D NULL; exec_envp[0] =3D NULL; /* launch the program again to check inherit */ rc =3D execve(next_program, exec_argv, exec_envp); diff --git a/tools/testing/selftests/riscv/vector/v_helpers.h b/tools/testi= ng/selftests/riscv/vector/v_helpers.h index faeeeb625b6e..763cddfe26da 100644 --- a/tools/testing/selftests/riscv/vector/v_helpers.h +++ b/tools/testing/selftests/riscv/vector/v_helpers.h @@ -1,6 +1,8 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include =20 +bool is_xtheadvector_supported(void); + bool is_vector_supported(void); =20 -int launch_test(char *next_program, int test_inherit); +int launch_test(char *next_program, int test_inherit, int xtheadvector); diff --git a/tools/testing/selftests/riscv/vector/v_initval.c b/tools/testi= ng/selftests/riscv/vector/v_initval.c index f38b5797fa31..be9e1d18ad29 100644 --- a/tools/testing/selftests/riscv/vector/v_initval.c +++ b/tools/testing/selftests/riscv/vector/v_initval.c @@ -7,10 +7,16 @@ =20 TEST(v_initval) { - if (!is_vector_supported()) - SKIP(return, "Vector not supported"); + int xtheadvector =3D 0; =20 - ASSERT_EQ(0, launch_test(NEXT_PROGRAM, 0)); + if (!is_vector_supported()) { + if (is_xtheadvector_supported()) + xtheadvector =3D 1; + else + SKIP(return, "Vector not supported"); + } + + ASSERT_EQ(0, launch_test(NEXT_PROGRAM, 0, xtheadvector)); } =20 TEST_HARNESS_MAIN diff --git a/tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c b/to= ols/testing/selftests/riscv/vector/vstate_exec_nolibc.c index 1f9969bed235..7b7d6f21acb4 100644 --- a/tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c +++ b/tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c @@ -6,13 +6,16 @@ =20 int main(int argc, char **argv) { - int rc, pid, status, test_inherit =3D 0; + int rc, pid, status, test_inherit =3D 0, xtheadvector =3D 0; long ctrl, ctrl_c; char *exec_argv[2], *exec_envp[2]; =20 - if (argc > 1) + if (argc > 1 && strcmp(argv[1], "x")) test_inherit =3D 1; =20 + if (argc > 2 && strcmp(argv[2], "x")) + xtheadvector =3D 1; + ctrl =3D my_syscall1(__NR_prctl, PR_RISCV_V_GET_CONTROL); if (ctrl < 0) { puts("PR_RISCV_V_GET_CONTROL is not supported\n"); @@ -53,11 +56,14 @@ int main(int argc, char **argv) puts("child's vstate_ctrl not equal to parent's\n"); exit(-1); } - asm volatile (".option push\n\t" - ".option arch, +v\n\t" - "vsetvli x0, x0, e32, m8, ta, ma\n\t" - ".option pop\n\t" - ); + if (xtheadvector) + asm volatile (".4byte 0x00007ed7"); + else + asm volatile (".option push\n\t" + ".option arch, +v\n\t" + "vsetvli x0, x0, e32, m8, ta, ma\n\t" + ".option pop\n\t" + ); exit(ctrl); } } diff --git a/tools/testing/selftests/riscv/vector/vstate_prctl.c b/tools/te= sting/selftests/riscv/vector/vstate_prctl.c index 850a0caa226e..3d79f266cc65 100644 --- a/tools/testing/selftests/riscv/vector/vstate_prctl.c +++ b/tools/testing/selftests/riscv/vector/vstate_prctl.c @@ -11,7 +11,7 @@ =20 #define NEXT_PROGRAM "./vstate_exec_nolibc" =20 -int test_and_compare_child(long provided, long expected, int inherit) +int test_and_compare_child(long provided, long expected, int inherit, int = xtheadvector) { int rc; =20 @@ -21,7 +21,7 @@ int test_and_compare_child(long provided, long expected, = int inherit) provided, rc); return -1; } - rc =3D launch_test(NEXT_PROGRAM, inherit); + rc =3D launch_test(NEXT_PROGRAM, inherit, xtheadvector); if (rc !=3D expected) { printf("Test failed, check %d !=3D %ld\n", rc, expected); return -2; @@ -36,7 +36,7 @@ TEST(get_control_no_v) { long rc; =20 - if (is_vector_supported()) + if (is_vector_supported() || is_xtheadvector_supported()) SKIP(return, "Test expects vector to be not supported"); =20 rc =3D prctl(PR_RISCV_V_GET_CONTROL); @@ -48,7 +48,7 @@ TEST(set_control_no_v) { long rc; =20 - if (is_vector_supported()) + if (is_vector_supported() || is_xtheadvector_supported()) SKIP(return, "Test expects vector to be not supported"); =20 rc =3D prctl(PR_RISCV_V_SET_CONTROL, PR_RISCV_V_VSTATE_CTRL_ON); @@ -61,12 +61,12 @@ TEST(vstate_on_current) long flag; long rc; =20 - if (!is_vector_supported()) + if (!is_vector_supported() && !is_xtheadvector_supported()) SKIP(return, "Vector not supported"); =20 flag =3D PR_RISCV_V_VSTATE_CTRL_ON; rc =3D prctl(PR_RISCV_V_SET_CONTROL, flag); - EXPECT_EQ(0, rc) TH_LOG("Enabling V for current should always success"); + EXPECT_EQ(0, rc) TH_LOG("Enabling V for current should always succeed"); } =20 TEST(vstate_off_eperm) @@ -74,99 +74,128 @@ TEST(vstate_off_eperm) long flag; long rc; =20 - if (!is_vector_supported()) + if (!is_vector_supported() && !is_xtheadvector_supported()) SKIP(return, "Vector not supported"); =20 flag =3D PR_RISCV_V_VSTATE_CTRL_OFF; rc =3D prctl(PR_RISCV_V_SET_CONTROL, flag); - EXPECT_EQ(EPERM, errno) TH_LOG("Disabling current's V alive must fail wit= h EPERM(%d)", errno); - EXPECT_EQ(-1, rc) TH_LOG("Disabling current's V alive must fail with EPER= M(%d)", errno); + EXPECT_EQ(EPERM, errno) TH_LOG("Disabling V in current thread with V enab= led must fail with EPERM(%d)", errno); + EXPECT_EQ(-1, rc) TH_LOG("Disabling V in current thread with V enabled mu= st fail with EPERM(%d)", errno); } =20 TEST(vstate_on_no_nesting) { long flag; + int xtheadvector =3D 0; =20 - if (!is_vector_supported()) - SKIP(return, "Vector not supported"); + if (!is_vector_supported()) { + if (is_xtheadvector_supported()) + xtheadvector =3D 1; + else + SKIP(return, "Vector not supported"); + } =20 /* Turn on next's vector explicitly and test */ flag =3D PR_RISCV_V_VSTATE_CTRL_ON << PR_RISCV_V_VSTATE_CTRL_NEXT_SHIFT; =20 - EXPECT_EQ(0, test_and_compare_child(flag, PR_RISCV_V_VSTATE_CTRL_ON, 0)); + EXPECT_EQ(0, test_and_compare_child(flag, PR_RISCV_V_VSTATE_CTRL_ON, 0, x= theadvector)); } =20 TEST(vstate_off_nesting) { long flag; + int xtheadvector =3D 0; =20 - if (!is_vector_supported()) - SKIP(return, "Vector not supported"); + if (!is_vector_supported()) { + if (is_xtheadvector_supported()) + xtheadvector =3D 1; + else + SKIP(return, "Vector not supported"); + } =20 /* Turn off next's vector explicitly and test */ flag =3D PR_RISCV_V_VSTATE_CTRL_OFF << PR_RISCV_V_VSTATE_CTRL_NEXT_SHIFT; =20 - EXPECT_EQ(0, test_and_compare_child(flag, PR_RISCV_V_VSTATE_CTRL_OFF, 1)); + EXPECT_EQ(0, test_and_compare_child(flag, PR_RISCV_V_VSTATE_CTRL_OFF, 1, = xtheadvector)); } =20 TEST(vstate_on_inherit_no_nesting) { long flag, expected; + int xtheadvector =3D 0; =20 - if (!is_vector_supported()) - SKIP(return, "Vector not supported"); + if (!is_vector_supported()) { + if (is_xtheadvector_supported()) + xtheadvector =3D 1; + else + SKIP(return, "Vector not supported"); + } =20 /* Turn on next's vector explicitly and test no inherit */ flag =3D PR_RISCV_V_VSTATE_CTRL_ON << PR_RISCV_V_VSTATE_CTRL_NEXT_SHIFT; flag |=3D PR_RISCV_V_VSTATE_CTRL_INHERIT; expected =3D flag | PR_RISCV_V_VSTATE_CTRL_ON; =20 - EXPECT_EQ(0, test_and_compare_child(flag, expected, 0)); + EXPECT_EQ(0, test_and_compare_child(flag, expected, 0, xtheadvector)); } =20 TEST(vstate_on_inherit) { long flag, expected; + int xtheadvector =3D 0; =20 - if (!is_vector_supported()) - SKIP(return, "Vector not supported"); + if (!is_vector_supported()) { + if (is_xtheadvector_supported()) + xtheadvector =3D 1; + else + SKIP(return, "Vector not supported"); + } =20 /* Turn on next's vector explicitly and test inherit */ flag =3D PR_RISCV_V_VSTATE_CTRL_ON << PR_RISCV_V_VSTATE_CTRL_NEXT_SHIFT; flag |=3D PR_RISCV_V_VSTATE_CTRL_INHERIT; expected =3D flag | PR_RISCV_V_VSTATE_CTRL_ON; =20 - EXPECT_EQ(0, test_and_compare_child(flag, expected, 1)); + EXPECT_EQ(0, test_and_compare_child(flag, expected, 1, xtheadvector)); } =20 TEST(vstate_off_inherit_no_nesting) { long flag, expected; + int xtheadvector =3D 0; =20 - if (!is_vector_supported()) - SKIP(return, "Vector not supported"); - + if (!is_vector_supported()) { + if (is_xtheadvector_supported()) + xtheadvector =3D 1; + else + SKIP(return, "Vector not supported"); + } /* Turn off next's vector explicitly and test no inherit */ flag =3D PR_RISCV_V_VSTATE_CTRL_OFF << PR_RISCV_V_VSTATE_CTRL_NEXT_SHIFT; flag |=3D PR_RISCV_V_VSTATE_CTRL_INHERIT; expected =3D flag | PR_RISCV_V_VSTATE_CTRL_OFF; =20 - EXPECT_EQ(0, test_and_compare_child(flag, expected, 0)); + EXPECT_EQ(0, test_and_compare_child(flag, expected, 0, xtheadvector)); } =20 TEST(vstate_off_inherit) { long flag, expected; + int xtheadvector =3D 0; =20 - if (!is_vector_supported()) - SKIP(return, "Vector not supported"); + if (!is_vector_supported()) { + if (is_xtheadvector_supported()) + xtheadvector =3D 1; + else + SKIP(return, "Vector not supported"); + } =20 /* Turn off next's vector explicitly and test inherit */ flag =3D PR_RISCV_V_VSTATE_CTRL_OFF << PR_RISCV_V_VSTATE_CTRL_NEXT_SHIFT; flag |=3D PR_RISCV_V_VSTATE_CTRL_INHERIT; expected =3D flag | PR_RISCV_V_VSTATE_CTRL_OFF; =20 - EXPECT_EQ(0, test_and_compare_child(flag, expected, 1)); + EXPECT_EQ(0, test_and_compare_child(flag, expected, 1, xtheadvector)); } =20 /* arguments should fail with EINVAL */ @@ -174,7 +203,7 @@ TEST(inval_set_control_1) { int rc; =20 - if (!is_vector_supported()) + if (!is_vector_supported() && !is_xtheadvector_supported()) SKIP(return, "Vector not supported"); =20 rc =3D prctl(PR_RISCV_V_SET_CONTROL, 0xff0); @@ -187,7 +216,7 @@ TEST(inval_set_control_2) { int rc; =20 - if (!is_vector_supported()) + if (!is_vector_supported() && !is_xtheadvector_supported()) SKIP(return, "Vector not supported"); =20 rc =3D prctl(PR_RISCV_V_SET_CONTROL, 0x3); @@ -200,7 +229,7 @@ TEST(inval_set_control_3) { int rc; =20 - if (!is_vector_supported()) + if (!is_vector_supported() && !is_xtheadvector_supported()) SKIP(return, "Vector not supported"); =20 rc =3D prctl(PR_RISCV_V_SET_CONTROL, 0xc); --=20 2.44.0