Add option to read and decode On Demand meter certificates. Link: https://github.com/intel/intel-sdsi/blob/master/meter-certificate.rst Signed-off-by: David E. Box <david.e.box@xxxxxxxxxxxxxxx> --- tools/arch/x86/intel_sdsi/intel_sdsi.c | 110 ++++++++++++++++++++++++- 1 file changed, 107 insertions(+), 3 deletions(-) diff --git a/tools/arch/x86/intel_sdsi/intel_sdsi.c b/tools/arch/x86/intel_sdsi/intel_sdsi.c index 0680eda78b1a..ebf076ee6ef8 100644 --- a/tools/arch/x86/intel_sdsi/intel_sdsi.c +++ b/tools/arch/x86/intel_sdsi/intel_sdsi.c @@ -39,8 +39,10 @@ #define GUID_V2 0xF210D9EF #define REGISTERS_MIN_SIZE 72 #define STATE_CERT_MAX_SIZE 4096 +#define METER_CERT_MAX_SIZE 4096 #define STATE_MAX_NUM_LICENSES 16 #define STATE_MAX_NUM_IN_BUNDLE (uint32_t)8 +#define METER_MAX_NUM_BUNDLES 8 #define __round_mask(x, y) ((__typeof__(x))((y) - 1)) #define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1) @@ -150,6 +152,21 @@ struct bundle_encoding { uint32_t encoding_rsvd[7]; }; +struct meter_certificate { + uint32_t block_signature; + uint32_t counter_unit; + uint64_t ppin; + uint32_t bundle_length; + uint32_t reserved; + uint32_t mmrc_encoding; + uint32_t mmrc_counter; +}; + +struct bundle_encoding_counter { + uint32_t encoding; + uint32_t counter; +}; + struct sdsi_dev { struct sdsi_regs regs; struct state_certificate sc; @@ -160,6 +177,7 @@ struct sdsi_dev { enum command { CMD_SOCKET_INFO, + CMD_METER_CERT, CMD_STATE_CERT, CMD_PROV_AKC, CMD_PROV_CAP, @@ -306,6 +324,86 @@ static void get_feature(uint32_t encoding, char *feature) feature[0] = name[3]; } +static int sdsi_meter_cert_show(struct sdsi_dev *s) +{ + char buf[METER_CERT_MAX_SIZE] = {0}; + struct bundle_encoding_counter *bec; + struct meter_certificate *mc; + uint32_t count = 0; + FILE *cert_ptr; + int ret, size; + + ret = sdsi_update_registers(s); + if (ret) + return ret; + + if (!s->regs.en_features.sdsi) { + fprintf(stderr, "SDSi feature is present but not enabled.\n"); + fprintf(stderr, " Unable to read meter certificate\n"); + return -1; + } + + if (!s->regs.en_features.metering) { + fprintf(stderr, "Metering not supporting on this socket.\n"); + return -1; + } + + ret = chdir(s->dev_path); + if (ret == -1) { + perror("chdir"); + return ret; + } + + cert_ptr = fopen("meter_certificate", "r"); + if (!cert_ptr) { + perror("Could not open 'meter_certificate' file"); + return -1; + } + + size = fread(buf, 1, sizeof(buf), cert_ptr); + if (!size) { + fprintf(stderr, "Could not read 'meter_certificate' file\n"); + fclose(cert_ptr); + return -1; + } + fclose(cert_ptr); + + mc = (struct meter_certificate *)buf; + + printf("\n"); + printf("Meter certificate for device %s\n", s->dev_name); + printf("\n"); + printf("Block Signature: 0x%x\n", mc->block_signature); + printf("Count Unit: %dms\n", mc->counter_unit); + printf("PPIN: 0x%lx\n", mc->ppin); + printf("Feature Bundle Length: %d\n", mc->bundle_length); + printf("MMRC encoding: %d\n", mc->mmrc_encoding); + printf("MMRC counter: %d\n", mc->mmrc_counter); + if (mc->bundle_length % 8) { + fprintf(stderr, "Invalid bundle length\n"); + return -1; + } + + if (mc->bundle_length > METER_MAX_NUM_BUNDLES * 8) { + fprintf(stderr, "More the %d bundles: %d\n", + METER_MAX_NUM_BUNDLES, mc->bundle_length / 8); + return -1; + } + + bec = (void *)(mc) + sizeof(mc); + + printf("Number of Feature Counters: %d\n", mc->bundle_length / 8); + while (count++ < mc->bundle_length / 8) { + char feature[5]; + + feature[4] = '\0'; + get_feature(bec[count].encoding, feature); + printf(" %s: %d\n", feature, bec[count].counter); + } + + return 0; +} + static int sdsi_state_cert_show(struct sdsi_dev *s) { char buf[STATE_CERT_MAX_SIZE] = {0}; @@ -625,7 +723,7 @@ static void sdsi_free_dev(struct sdsi_dev *s) static void usage(char *prog) { - printf("Usage: %s [-l] [-d DEVNO [-i] [-s] [-a FILE] [-c FILE]]\n", prog); + printf("Usage: %s [-l] [-d DEVNO [-i] [-s] [-m] [-a FILE] [-c FILE]]\n", prog); } static void show_help(void) @@ -635,6 +733,7 @@ static void show_help(void) printf(" %-18s\t%s\n", "-d, --devno DEVNO", "On Demand device number"); printf(" %-18s\t%s\n", "-i, --info", "show socket information"); printf(" %-18s\t%s\n", "-s, --state", "show state certificate"); + printf(" %-18s\t%s\n", "-m, --meter", "show meter certificate"); printf(" %-18s\t%s\n", "-a, --akc FILE", "provision socket with AKC FILE"); printf(" %-18s\t%s\n", "-c, --cap FILE>", "provision socket with CAP FILE"); } @@ -656,6 +755,7 @@ int main(int argc, char *argv[]) {"help", no_argument, 0, 'h'}, {"info", no_argument, 0, 'i'}, {"list", no_argument, 0, 'l'}, + {"meter", no_argument, 0, 'm'}, {"state", no_argument, 0, 's'}, {0, 0, 0, 0 } }; @@ -663,7 +763,7 @@ int main(int argc, char *argv[]) progname = argv[0]; - while ((opt = getopt_long_only(argc, argv, "+a:c:d:hils", long_options, + while ((opt = getopt_long_only(argc, argv, "+a:c:d:hilms", long_options, &option_index)) != -1) { switch (opt) { case 'd': @@ -676,8 +776,9 @@ int main(int argc, char *argv[]) case 'i': command = CMD_SOCKET_INFO; break; + case 'm': case 's': - command = CMD_STATE_CERT; + command = (opt == 'm') ? CMD_METER_CERT : CMD_STATE_CERT; break; case 'a': case 'c': @@ -713,6 +814,9 @@ int main(int argc, char *argv[]) case CMD_SOCKET_INFO: ret = sdsi_read_reg(s); break; + case CMD_METER_CERT: + ret = sdsi_meter_cert_show(s); + break; case CMD_STATE_CERT: ret = sdsi_state_cert_show(s); break; -- 2.25.1
