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 | 129 +++++++++++++++++++++++++++++
tests/qtest/meson.build | 1 +
2 files changed, 130 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..bfa57f3234
--- /dev/null
+++ b/tests/qtest/pnv-spi-seeprom-test.c
@@ -0,0 +1,129 @@
+/*
+ * 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/ssi/pnv_spi_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 "
+ "-blockdev node-name=pib_spic2,driver=file,"
+ "filename=sbe_measurement_seeprom.bin.ecc "
+ "-device 25csm04,bus=pnv-spi-bus.2,cs=0,"
+ "drive=pib_spic2");
+ } 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"
+ " -device 25csm04,bus=pnv-spi-bus.2,cs=0");
+ }
+ 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 86293051dc..2fa98b2430 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -171,6 +171,7 @@ 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
