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b=R/u/JuYeWAoHC8tksqZyzl fAFzUV+3NFTl4TwZwVB0h7MwyyLZyEMtjLECqwXlIj2sTLwlOqgi7BJaR5lMN6bL /IaXsOxsJ0UFZFobZ/SMq6GX6xVY5sl1t1ASfQxb0MhgdHDTEIVn9Wrtcn+LvJ95 xyCuOy57MOQoLWkBj4EBTt/2IZlwWnOd2XaZxPjuu701VIWMj+2oZujUxOsHMlBB n0iGlhZSvCeYnafu9pCWTEG4Bv86rSQcS/xQNwe4LDlJr8oIL2e8z8UyThqKLILr BNCPj2bpZUTS/hzH/5CnFGuyum+EOanZ/0Fry8/gAJ+7jPnXvQ9KHGIzCm3EIrZQ == From: Saif Abrar To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org Cc: clg@kaod.org, npiggin@gmail.com, fbarrat@linux.ibm.com, mst@redhat.com, marcel.apfelbaum@gmail.com, cohuck@redhat.com, pbonzini@redhat.com, thuth@redhat.com, lvivier@redhat.com, danielhb413@gmail.com, saif.abrar@linux.vnet.ibm.com Subject: [PATCH v2 1/9] qtest/phb4: Add testbench for PHB4 Date: Tue, 30 Dec 2025 04:21:19 -0600 Message-ID: <20251230102156.886288-2-saif.abrar@linux.vnet.ibm.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251230102156.886288-1-saif.abrar@linux.vnet.ibm.com> References: <20251230102156.886288-1-saif.abrar@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; 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Testbench reads PHB Version register and asserts that bits[24:31] have value 0xA3, 0xA4 and 0xA5 respectively. Signed-off-by: Saif Abrar Reviewed-by: C=C3=A9dric Le Goater --- v1 -> v2: Added version check for PHB3 and PHB4 also. tests/qtest/meson.build | 1 + tests/qtest/pnv-phb4-test.c | 99 +++++++++++++++++++++++++++++++++++++ 2 files changed, 100 insertions(+) create mode 100644 tests/qtest/pnv-phb4-test.c diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 08fba9695b..690d34913e 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -183,6 +183,7 @@ qtests_ppc64 =3D \ (config_all_devices.has_key('CONFIG_POWERNV') ? ['pnv-xive2-test'] : [])= + \ (config_all_devices.has_key('CONFIG_POWERNV') ? ['pnv-spi-seeprom-test']= : []) + \ (config_all_devices.has_key('CONFIG_POWERNV') ? ['pnv-host-i2c-test'] : = []) + \ + (config_all_devices.has_key('CONFIG_POWERNV') ? ['pnv-phb4-test'] : []) = + \ (config_all_devices.has_key('CONFIG_PSERIES') ? ['numa-test'] : []) + = \ (config_all_devices.has_key('CONFIG_PSERIES') ? ['rtas-test'] : []) + = \ (slirp.found() ? ['pxe-test'] : []) + \ diff --git a/tests/qtest/pnv-phb4-test.c b/tests/qtest/pnv-phb4-test.c new file mode 100644 index 0000000000..3890b4f970 --- /dev/null +++ b/tests/qtest/pnv-phb4-test.c @@ -0,0 +1,99 @@ +/* + * QTest testcase for PowerNV PHB4 + * + * Copyright (c) 2025, IBM Corporation. + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + */ + +#include "qemu/osdep.h" +#include "libqtest.h" +#include "hw/pci-host/pnv_phb4_regs.h" +#include "pnv-xscom.h" + +#define PPC_BIT(bit) (0x8000000000000000ULL >> (bit)) +#define PPC_BITMASK(bs, be) ((PPC_BIT(bs) - PPC_BIT(be)) | PPC_BIT(bs)) + +#define PHB3_PBCQ_SPCI_ASB_ADDR 0x0 +#define PHB3_PBCQ_SPCI_ASB_DATA 0x2 + +/* Index of PNV_CHIP_POWER10 in pnv_chips[] within "pnv-xscom.h" */ +#define PNV_P10_CHIP_INDEX 3 +#define PHB4_XSCOM 0x40084800ull + +/* + * Indirect XSCOM read:: + * - Write 'Indirect Address Register' with register-offset to read. + * - Read 'Indirect Data Register' to get the value. + */ +static uint64_t pnv_phb_xscom_read(QTestState *qts, const PnvChip *chip, + uint64_t scom, uint32_t indirect_addr, uint32_t indirect_data, + uint64_t reg) +{ + qtest_writeq(qts, pnv_xscom_addr(chip, (scom >> 3) + indirect_addr), r= eg); + return qtest_readq(qts, pnv_xscom_addr(chip, (scom >> 3) + indirect_da= ta)); +} + +/* Assert that 'PHB - Version Register' bits-[24:31] are as expected */ +static void phb_version_test(const void *data) +{ + const PnvChip *chip =3D (PnvChip *)data; + QTestState *qts; + const char *machine =3D "powernv8"; + uint64_t phb_xscom =3D 0x4809e000; + uint64_t reg_phb_version =3D PHB_VERSION; + uint32_t indirect_addr =3D PHB3_PBCQ_SPCI_ASB_ADDR; + uint32_t indirect_data =3D PHB3_PBCQ_SPCI_ASB_DATA; + uint32_t expected_ver =3D 0xA3; + + if (chip->chip_type =3D=3D PNV_CHIP_POWER9) { + machine =3D "powernv9"; + phb_xscom =3D 0x68084800; + indirect_addr =3D PHB_SCOM_HV_IND_ADDR; + indirect_data =3D PHB_SCOM_HV_IND_DATA; + reg_phb_version |=3D PPC_BIT(0); + expected_ver =3D 0xA4; + } else if (chip->chip_type =3D=3D PNV_CHIP_POWER10) { + machine =3D "powernv10"; + phb_xscom =3D PHB4_XSCOM; + indirect_addr =3D PHB_SCOM_HV_IND_ADDR; + indirect_data =3D PHB_SCOM_HV_IND_DATA; + reg_phb_version |=3D PPC_BIT(0); + expected_ver =3D 0xA5; + } + + qts =3D qtest_initf("-M %s -accel tcg -cpu %s", machine, chip->cpu_mod= el); + + uint64_t ver =3D pnv_phb_xscom_read(qts, chip, phb_xscom, + indirect_addr, indirect_data, reg_phb_vers= ion); + + /* PHB Version register bits [24:31] */ + ver =3D ver >> (63 - 31); + g_assert_cmpuint(ver, =3D=3D, expected_ver); + + qtest_quit(qts); +} + +/* Verify versions of all supported PHB's */ +static void add_phbX_version_test(void) +{ + int i; + + for (i =3D 0; i < ARRAY_SIZE(pnv_chips); i++) { + char *tname =3D g_strdup_printf("pnv-phb/%s", + pnv_chips[i].cpu_model); + qtest_add_data_func(tname, &pnv_chips[i], phb_version_test); + g_free(tname); + } +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + + /* PHB[345] tests */ + add_phbX_version_test(); + + return g_test_run(); +} --=20 2.47.3