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Replace the platform_device_add_resources() method for delineating DPA within an endpoint with an emulated DEV_SIZE amount of partitionable capacity. Set DEV_SIZE such that an endpoint has enough capacity to simultaneously participate in 8 distinct regions. Signed-off-by: Dan Williams --- drivers/cxl/core/mbox.c | 7 +----- drivers/cxl/cxlmem.h | 7 ++++++ tools/testing/cxl/test/cxl.c | 40 +-------------------------------- tools/testing/cxl/test/mem.c | 51 ++++++++++++++++++++++-------------------- 4 files changed, 36 insertions(+), 69 deletions(-) diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index dd438ca12dcd..40e3ccb2bf3e 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -716,12 +716,7 @@ EXPORT_SYMBOL_NS_GPL(cxl_enumerate_cmds, CXL); */ static int cxl_mem_get_partition_info(struct cxl_dev_state *cxlds) { - struct cxl_mbox_get_partition_info { - __le64 active_volatile_cap; - __le64 active_persistent_cap; - __le64 next_volatile_cap; - __le64 next_persistent_cap; - } __packed pi; + struct cxl_mbox_get_partition_info pi; int rc; rc = cxl_mbox_send_cmd(cxlds, CXL_MBOX_OP_GET_PARTITION_INFO, NULL, 0, diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index db9c889f42ab..eee96016c3c7 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -314,6 +314,13 @@ struct cxl_mbox_identify { u8 qos_telemetry_caps; } __packed; +struct cxl_mbox_get_partition_info { + __le64 active_volatile_cap; + __le64 active_persistent_cap; + __le64 next_volatile_cap; + __le64 next_persistent_cap; +} __packed; + struct cxl_mbox_get_lsa { __le32 offset; __le32 length; diff --git a/tools/testing/cxl/test/cxl.c b/tools/testing/cxl/test/cxl.c index 599326796b83..c396f20a57dd 100644 --- a/tools/testing/cxl/test/cxl.c +++ b/tools/testing/cxl/test/cxl.c @@ -582,44 +582,6 @@ static void mock_companion(struct acpi_device *adev, struct device *dev) #define SZ_512G (SZ_64G * 8) #endif -static struct platform_device *alloc_memdev(int id) -{ - struct resource res[] = { - [0] = { - .flags = IORESOURCE_MEM, - }, - [1] = { - .flags = IORESOURCE_MEM, - .desc = IORES_DESC_PERSISTENT_MEMORY, - }, - }; - struct platform_device *pdev; - int i, rc; - - for (i = 0; i < ARRAY_SIZE(res); i++) { - struct cxl_mock_res *r = alloc_mock_res(SZ_256M); - - if (!r) - return NULL; - res[i].start = r->range.start; - res[i].end = r->range.end; - } - - pdev = platform_device_alloc("cxl_mem", id); - if (!pdev) - return NULL; - - rc = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); - if (rc) - goto err; - - return pdev; - -err: - platform_device_put(pdev); - return NULL; -} - static __init int cxl_test_init(void) { int rc, i; @@ -722,7 +684,7 @@ static __init int cxl_test_init(void) struct platform_device *dport = cxl_switch_dport[i]; struct platform_device *pdev; - pdev = alloc_memdev(i); + pdev = platform_device_alloc("cxl_mem", i); if (!pdev) goto err_mem; pdev->dev.parent = &dport->dev; diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index b81c90715fe8..aa2df3a15051 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -10,6 +10,7 @@ #include #define LSA_SIZE SZ_128K +#define DEV_SIZE SZ_2G #define EFFECT(x) (1U << x) static struct cxl_cel_entry mock_cel[] = { @@ -25,6 +26,10 @@ static struct cxl_cel_entry mock_cel[] = { .opcode = cpu_to_le16(CXL_MBOX_OP_GET_LSA), .effect = cpu_to_le16(0), }, + { + .opcode = cpu_to_le16(CXL_MBOX_OP_GET_PARTITION_INFO), + .effect = cpu_to_le16(0), + }, { .opcode = cpu_to_le16(CXL_MBOX_OP_SET_LSA), .effect = cpu_to_le16(EFFECT(1) | EFFECT(2)), @@ -97,42 +102,37 @@ static int mock_get_log(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) static int mock_id(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { - struct platform_device *pdev = to_platform_device(cxlds->dev); struct cxl_mbox_identify id = { .fw_revision = { "mock fw v1 " }, .lsa_size = cpu_to_le32(LSA_SIZE), - /* FIXME: Add partition support */ - .partition_align = cpu_to_le64(0), + .partition_align = + cpu_to_le64(SZ_256M / CXL_CAPACITY_MULTIPLIER), + .total_capacity = + cpu_to_le64(DEV_SIZE / CXL_CAPACITY_MULTIPLIER), }; - u64 capacity = 0; - int i; if (cmd->size_out < sizeof(id)) return -EINVAL; - for (i = 0; i < 2; i++) { - struct resource *res; - - res = platform_get_resource(pdev, IORESOURCE_MEM, i); - if (!res) - break; - - capacity += resource_size(res) / CXL_CAPACITY_MULTIPLIER; + memcpy(cmd->payload_out, &id, sizeof(id)); - if (le64_to_cpu(id.partition_align)) - continue; + return 0; +} - if (res->desc == IORES_DESC_PERSISTENT_MEMORY) - id.persistent_capacity = cpu_to_le64( - resource_size(res) / CXL_CAPACITY_MULTIPLIER); - else - id.volatile_capacity = cpu_to_le64( - resource_size(res) / CXL_CAPACITY_MULTIPLIER); - } +static int mock_partition_info(struct cxl_dev_state *cxlds, + struct cxl_mbox_cmd *cmd) +{ + struct cxl_mbox_get_partition_info pi = { + .active_volatile_cap = + cpu_to_le64(DEV_SIZE / 2 / CXL_CAPACITY_MULTIPLIER), + .active_persistent_cap = + cpu_to_le64(DEV_SIZE / 2 / CXL_CAPACITY_MULTIPLIER), + }; - id.total_capacity = cpu_to_le64(capacity); + if (cmd->size_out < sizeof(pi)) + return -EINVAL; - memcpy(cmd->payload_out, &id, sizeof(id)); + memcpy(cmd->payload_out, &pi, sizeof(pi)); return 0; } @@ -221,6 +221,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd * case CXL_MBOX_OP_GET_LSA: rc = mock_get_lsa(cxlds, cmd); break; + case CXL_MBOX_OP_GET_PARTITION_INFO: + rc = mock_partition_info(cxlds, cmd); + break; case CXL_MBOX_OP_SET_LSA: rc = mock_set_lsa(cxlds, cmd); break;