Add a test to store a static string in the label storage area using the SET_LSA mailbox command, and retrieve it using the GET_LSA command. Compare the strings sent and received and ensure they match.
Signed-off-by: Vishal Verma <vishal.l.ve...@intel.com> --- test/libcxl.c | 134 +++++++++++++++++++++++++++++++++++++++++++++++ test/Makefile.am | 3 +- 2 files changed, 136 insertions(+), 1 deletion(-) diff --git a/test/libcxl.c b/test/libcxl.c index 9662f34..1cff32c 100644 --- a/test/libcxl.c +++ b/test/libcxl.c @@ -19,6 +19,7 @@ #include <linux/version.h> #include <util/size.h> +#include <util/hexdump.h> #include <ccan/short_types/short_types.h> #include <ccan/array_size/array_size.h> #include <ccan/endian/endian.h> @@ -209,6 +210,138 @@ out_fail: return rc; } +static int debugfs_write_raw_flag(char *str) +{ + char *path = "/sys/kernel/debug/cxl/mbox/raw_allow_all"; + int fd = open(path, O_WRONLY|O_CLOEXEC); + int n, len = strlen(str) + 1, rc; + + if (fd < 0) + return -errno; + + n = write(fd, str, len); + rc = -errno; + close(fd); + if (n < len) { + fprintf(stderr, "failed to write %s to %s: %s\n", str, path, + strerror(errno)); + return rc; + } + return 0; +} + +static char *test_lsa_data = "LIBCXL_TEST LSA DATA 01"; +static int lsa_size = EXPECT_CMD_IDENTIFY_LSA_SIZE; + +static int test_set_lsa(struct cxl_memdev *memdev) +{ + int data_size = strlen(test_lsa_data) + 1; + struct cxl_cmd *cmd; + struct { + le32 offset; + le32 rsvd; + unsigned char data[lsa_size]; + } __attribute__((packed)) set_lsa; + int rc; + + set_lsa.offset = cpu_to_le32(0); + set_lsa.rsvd = cpu_to_le32(0); + memcpy(set_lsa.data, test_lsa_data, data_size); + + cmd = cxl_cmd_new_raw(memdev, 0x4103); + if (!cmd) + return -ENOMEM; + + rc = cxl_cmd_set_input_payload(cmd, &set_lsa, sizeof(set_lsa)); + if (rc) { + fprintf(stderr, "%s: %s: cmd setup failed: %s\n", + __func__, cxl_memdev_get_devname(memdev), + strerror(-rc)); + goto out_fail; + } + + rc = debugfs_write_raw_flag("Y"); + if (rc < 0) + return rc; + + rc = cxl_cmd_submit(cmd); + if (rc < 0) + fprintf(stderr, "%s: %s: cmd submission failed: %s\n", + __func__, cxl_memdev_get_devname(memdev), + strerror(-rc)); + + rc = cxl_cmd_get_mbox_status(cmd); + if (rc != 0) { + fprintf(stderr, "%s: %s: firmware status: %d\n", + __func__, cxl_memdev_get_devname(memdev), rc); + return -ENXIO; + } + + if(debugfs_write_raw_flag("N") < 0) + fprintf(stderr, "%s: %s: failed to restore raw flag\n", + __func__, cxl_memdev_get_devname(memdev)); + +out_fail: + cxl_cmd_unref(cmd); + return rc; +} + +static int test_cxl_cmd_lsa(struct cxl_ctx *ctx) +{ + int data_size = strlen(test_lsa_data) + 1; + struct cxl_memdev *memdev; + struct cxl_cmd *cmd; + unsigned char *buf; + int rc; + + cxl_memdev_foreach(ctx, memdev) { + rc = test_set_lsa(memdev); + if (rc) + return rc; + + cmd = cxl_cmd_new_get_lsa(memdev, 0, lsa_size); + if (!cmd) + return -ENOMEM; + rc = cxl_cmd_set_output_payload(cmd, NULL, lsa_size); + if (rc) { + fprintf(stderr, "%s: output buffer allocation: %s\n", + __func__, strerror(-rc)); + return rc; + } + rc = cxl_cmd_submit(cmd); + if (rc < 0) { + fprintf(stderr, "%s: %s: cmd submission failed: %s\n", + __func__, cxl_memdev_get_devname(memdev), + strerror(-rc)); + goto out_fail; + } + + rc = cxl_cmd_get_mbox_status(cmd); + if (rc != 0) { + fprintf(stderr, "%s: %s: firmware status: %d\n", + __func__, cxl_memdev_get_devname(memdev), rc); + return -ENXIO; + } + + buf = cxl_cmd_get_lsa_get_payload(cmd); + if (rc < 0) + goto out_fail; + + if (memcmp(buf, test_lsa_data, data_size) != 0) { + fprintf(stderr, "%s: LSA data mismatch.\n", __func__); + hex_dump_buf(buf, data_size); + rc = -EIO; + goto out_fail; + } + cxl_cmd_unref(cmd); + } + return 0; + +out_fail: + cxl_cmd_unref(cmd); + return rc; +} + typedef int (*do_test_fn)(struct cxl_ctx *ctx); static do_test_fn do_test[] = { @@ -216,6 +349,7 @@ static do_test_fn do_test[] = { test_cxl_presence, test_cxl_emulation_env, test_cxl_cmd_identify, + test_cxl_cmd_lsa, }; static int test_libcxl(int loglevel, struct test_ctx *test, struct cxl_ctx *ctx) diff --git a/test/Makefile.am b/test/Makefile.am index ce492a4..23f4860 100644 --- a/test/Makefile.am +++ b/test/Makefile.am @@ -86,7 +86,8 @@ LIBNDCTL_LIB =\ testcore =\ core.c \ ../util/log.c \ - ../util/sysfs.c + ../util/sysfs.c \ + ../util/hexdump.c libndctl_SOURCES = libndctl.c $(testcore) libndctl_LDADD = $(LIBNDCTL_LIB) $(UUID_LIBS) $(KMOD_LIBS) -- 2.29.2 _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-le...@lists.01.org