diff options
author | Alison Schofield <alison.schofield@intel.com> | 2023-04-19 06:26:30 +0300 |
---|---|---|
committer | Dan Williams <dan.j.williams@intel.com> | 2023-04-23 22:08:39 +0300 |
commit | 371c16101ee8a076cbe93ab95bbefdb43927003e (patch) | |
tree | 83544301745fec764678e014d88f7420bd480239 /tools/testing | |
parent | 50d527f52cbf0680c87d11a254383ca730c5c19f (diff) | |
download | linux-371c16101ee8a076cbe93ab95bbefdb43927003e.tar.xz |
tools/testing/cxl: Mock the Inject Poison mailbox command
Mock the injection of poison by storing the device:address entries in
mock_poison_list[]. Enforce a limit of 8 poison injections per memdev
device and 128 total entries for the cxl_test mock driver.
Introducing the mock_poison[] list here, makes it available for use in
the mock of Clear Poison, and the mock of Get Poison List.
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/f6b7f03541eaa8c2260d3eafadd04afe3f0d7962.1681874357.git.alison.schofield@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'tools/testing')
-rw-r--r-- | tools/testing/cxl/test/mem.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index cf7975db05ed..2731ebbd175b 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -16,6 +16,9 @@ #define DEV_SIZE SZ_2G #define EFFECT(x) (1U << x) +#define MOCK_INJECT_DEV_MAX 8 +#define MOCK_INJECT_TEST_MAX 128 + static struct cxl_cel_entry mock_cel[] = { { .opcode = cpu_to_le16(CXL_MBOX_OP_GET_SUPPORTED_LOGS), @@ -45,6 +48,10 @@ static struct cxl_cel_entry mock_cel[] = { .opcode = cpu_to_le16(CXL_MBOX_OP_GET_POISON), .effect = cpu_to_le16(0), }, + { + .opcode = cpu_to_le16(CXL_MBOX_OP_INJECT_POISON), + .effect = cpu_to_le16(0), + }, }; /* See CXL 2.0 Table 181 Get Health Info Output Payload */ @@ -474,6 +481,7 @@ static int mock_id(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) cpu_to_le64(SZ_256M / CXL_CAPACITY_MULTIPLIER), .total_capacity = cpu_to_le64(DEV_SIZE / CXL_CAPACITY_MULTIPLIER), + .inject_poison_limit = cpu_to_le16(MOCK_INJECT_DEV_MAX), }; put_unaligned_le24(CXL_POISON_LIST_MAX, id.poison_list_max_mer); @@ -895,6 +903,11 @@ static int mock_health_info(struct cxl_dev_state *cxlds, return 0; } +static struct mock_poison { + struct cxl_dev_state *cxlds; + u64 dpa; +} mock_poison_list[MOCK_INJECT_TEST_MAX]; + static int mock_get_poison(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { @@ -923,6 +936,67 @@ static int mock_get_poison(struct cxl_dev_state *cxlds, return 0; } +static bool mock_poison_dev_max_injected(struct cxl_dev_state *cxlds) +{ + int count = 0; + + for (int i = 0; i < MOCK_INJECT_TEST_MAX; i++) { + if (mock_poison_list[i].cxlds == cxlds) + count++; + } + return (count >= MOCK_INJECT_DEV_MAX); +} + +static bool mock_poison_add(struct cxl_dev_state *cxlds, u64 dpa) +{ + if (mock_poison_dev_max_injected(cxlds)) { + dev_dbg(cxlds->dev, + "Device poison injection limit has been reached: %d\n", + MOCK_INJECT_DEV_MAX); + return false; + } + + for (int i = 0; i < MOCK_INJECT_TEST_MAX; i++) { + if (!mock_poison_list[i].cxlds) { + mock_poison_list[i].cxlds = cxlds; + mock_poison_list[i].dpa = dpa; + return true; + } + } + dev_dbg(cxlds->dev, + "Mock test poison injection limit has been reached: %d\n", + MOCK_INJECT_TEST_MAX); + + return false; +} + +static bool mock_poison_found(struct cxl_dev_state *cxlds, u64 dpa) +{ + for (int i = 0; i < MOCK_INJECT_TEST_MAX; i++) { + if (mock_poison_list[i].cxlds == cxlds && + mock_poison_list[i].dpa == dpa) + return true; + } + return false; +} + +static int mock_inject_poison(struct cxl_dev_state *cxlds, + struct cxl_mbox_cmd *cmd) +{ + struct cxl_mbox_inject_poison *pi = cmd->payload_in; + u64 dpa = le64_to_cpu(pi->address); + + if (mock_poison_found(cxlds, dpa)) { + /* Not an error to inject poison if already poisoned */ + dev_dbg(cxlds->dev, "DPA: 0x%llx already poisoned\n", dpa); + return 0; + } + if (!mock_poison_add(cxlds, dpa)) + return -ENXIO; + + return 0; +} + static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { struct device *dev = cxlds->dev; @@ -980,6 +1054,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd * case CXL_MBOX_OP_GET_POISON: rc = mock_get_poison(cxlds, cmd); break; + case CXL_MBOX_OP_INJECT_POISON: + rc = mock_inject_poison(cxlds, cmd); + break; default: break; } |