Re: [PATCH v3 5/5] tests/qtest: Add pnv-spi-seeprom qtest

[Miles Glenn <milesg@linux.ibm.com>]

Hi Chalapathi,

Looks good.  I think I would just shorten the names of the xscom
read/write functions to make things more readable inside the
transaction function.

-Glenn

Reviewed-by: Glenn Miles <milesg@linux.ibm.com>

> +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'] : []) +              \