In this commit Write a qtest pnv-spi-seeprom-test to check the SPI transactions between spi controller and seeprom device.
Signed-off-by: Chalapathi V <chalapath...@linux.ibm.com> --- tests/qtest/pnv-spi-seeprom-test.c | 126 +++++++++++++++++++++++++++++ tests/qtest/meson.build | 1 + 2 files changed, 127 insertions(+) create mode 100644 tests/qtest/pnv-spi-seeprom-test.c diff --git a/tests/qtest/pnv-spi-seeprom-test.c b/tests/qtest/pnv-spi-seeprom-test.c new file mode 100644 index 0000000000..4f0fcb1ea3 --- /dev/null +++ b/tests/qtest/pnv-spi-seeprom-test.c @@ -0,0 +1,126 @@ +/* + * QTest testcase for PowerNV 10 Seeprom Communications + * + * Copyright (c) 2024, IBM Corporation. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include <unistd.h> +#include "qemu/osdep.h" +#include "libqtest.h" +#include "qemu/bswap.h" +#include "hw/ppc/pnv_spi_controller_regs.h" + +#define P10_XSCOM_BASE 0x000603fc00000000ull +#define SPIC2_XSCOM_BASE 0xc0040 + +/* To transmit READ opcode and address */ +#define READ_OP_TDR_DATA 0x0300010000000000 +/* + * N1 shift - tx 4 bytes (transmit opcode and address) + * N2 shift - tx and rx 8 bytes. + */ +#define READ_OP_COUNTER_CONFIG 0x2040000000002b00 +/* SEQ_OP_SELECT_RESPONDER - N1 Shift - N2 Shift * 5 - SEQ_OP_STOP */ +#define READ_OP_SEQUENCER 0x1130404040404010 + +/* To transmit WREN(Set Write Enable Latch in status0 register) opcode */ +#define WRITE_OP_WREN 0x0600000000000000 +/* To transmit WRITE opcode, address and data */ +#define WRITE_OP_TDR_DATA 0x0300010012345678 +/* N1 shift - tx 8 bytes (transmit opcode, address and data) */ +#define WRITE_OP_COUNTER_CONFIG 0x4000000000002000 +/* SEQ_OP_SELECT_RESPONDER - N1 Shift - SEQ_OP_STOP */ +#define WRITE_OP_SEQUENCER 0x1130100000000000 + +static uint64_t pnv_xscom_addr(uint32_t pcba) +{ + return P10_XSCOM_BASE | ((uint64_t) pcba << 3); +} + +static uint64_t pnv_spi_seeprom_xscom_addr(uint32_t reg) +{ + return pnv_xscom_addr(SPIC2_XSCOM_BASE + reg); +} + +static void pnv_spi_controller_xscom_write(QTestState *qts, uint32_t reg, + uint64_t val) +{ + qtest_writeq(qts, pnv_spi_seeprom_xscom_addr(reg), val); +} + +static uint64_t pnv_spi_controller_xscom_read(QTestState *qts, uint32_t reg) +{ + return qtest_readq(qts, pnv_spi_seeprom_xscom_addr(reg)); +} + +static void spi_seeprom_transaction(QTestState *qts) +{ + /* SPI transactions to SEEPROM to read from SEEPROM image */ + pnv_spi_controller_xscom_write(qts, COUNTER_CONFIG_REG, + READ_OP_COUNTER_CONFIG); + pnv_spi_controller_xscom_write(qts, SEQUENCER_OPERATION_REG, + READ_OP_SEQUENCER); + pnv_spi_controller_xscom_write(qts, TRANSMIT_DATA_REG, READ_OP_TDR_DATA); + pnv_spi_controller_xscom_write(qts, TRANSMIT_DATA_REG, 0); + /* Read 5*8 bytes from SEEPROM at 0x100 */ + uint64_t rdr_val = pnv_spi_controller_xscom_read(qts, RECEIVE_DATA_REG); + printf("RDR READ = 0x%lx\n", rdr_val); + rdr_val = pnv_spi_controller_xscom_read(qts, RECEIVE_DATA_REG); + rdr_val = pnv_spi_controller_xscom_read(qts, RECEIVE_DATA_REG); + rdr_val = pnv_spi_controller_xscom_read(qts, RECEIVE_DATA_REG); + rdr_val = pnv_spi_controller_xscom_read(qts, RECEIVE_DATA_REG); + printf("RDR READ = 0x%lx\n", rdr_val); + + /* SPI transactions to SEEPROM to write to SEEPROM image */ + pnv_spi_controller_xscom_write(qts, COUNTER_CONFIG_REG, + WRITE_OP_COUNTER_CONFIG); + /* Set Write Enable Latch bit of status0 register */ + pnv_spi_controller_xscom_write(qts, SEQUENCER_OPERATION_REG, + WRITE_OP_SEQUENCER); + pnv_spi_controller_xscom_write(qts, TRANSMIT_DATA_REG, WRITE_OP_WREN); + /* write 8 bytes to SEEPROM at 0x100 */ + pnv_spi_controller_xscom_write(qts, SEQUENCER_OPERATION_REG, + WRITE_OP_SEQUENCER); + pnv_spi_controller_xscom_write(qts, TRANSMIT_DATA_REG, WRITE_OP_TDR_DATA); +} + +/* Find complete path of in_file in the current working directory */ +static void find_file(const char *in_file, char *in_path) +{ + g_autofree char *cwd = g_get_current_dir(); + char *filepath = g_build_filename(cwd, in_file, NULL); + if (!access(filepath, F_OK)) { + strcpy(in_path, filepath); + } else { + strcpy(in_path, ""); + printf("File %s not found within %s\n", in_file, cwd); + } +} + +static void test_spi_seeprom(void) +{ + QTestState *qts = NULL; + char seepromfile[500]; + find_file("sbe_measurement_seeprom.bin.ecc", seepromfile); + if (strcmp(seepromfile, "")) { + printf("Starting QEMU with seeprom file.\n"); + qts = qtest_initf("-m 2G -machine powernv10 -smp 2,cores=2," + "threads=1 -accel tcg,thread=single -nographic " + "-device loader,file=sbe_measurement_seeprom.bin.ecc" + ",addr=0x7000000"); + } else { + printf("Starting QEMU without seeprom file.\n"); + qts = qtest_initf("-m 2G -machine powernv10 -smp 2,cores=2," + "threads=1 -accel tcg,thread=single -nographic"); + } + spi_seeprom_transaction(qts); + qtest_quit(qts); +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + qtest_add_func("spi_seeprom", test_spi_seeprom); + return g_test_run(); +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 36c5c13a7b..e95453022d 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -167,6 +167,7 @@ qtests_ppc64 = \ qtests_ppc + \ (config_all_devices.has_key('CONFIG_PSERIES') ? ['device-plug-test'] : []) + \ (config_all_devices.has_key('CONFIG_POWERNV') ? ['pnv-xscom-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_PSERIES') ? ['rtas-test'] : []) + \ (slirp.found() ? ['pxe-test'] : []) + \ -- 2.39.3