diff options
| -rw-r--r-- | tools/testing/cxl/test/cxl.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/testing/cxl/test/cxl.c b/tools/testing/cxl/test/cxl.c index f0e734536081..bdb7e7366b6d 100644 --- a/tools/testing/cxl/test/cxl.c +++ b/tools/testing/cxl/test/cxl.c @@ -15,6 +15,7 @@ #include "mock.h" static int interleave_arithmetic; +static bool extended_linear_cache; #define FAKE_QTG_ID 42 @@ -429,6 +430,22 @@ static struct cxl_mock_res *alloc_mock_res(resource_size_t size, int align) return res; } +/* Only update CFMWS0 as this is used by the auto region. */ +static void cfmws_elc_update(struct acpi_cedt_cfmws *window, int index) +{ + if (!extended_linear_cache) + return; + + if (index != 0) + return; + + /* + * The window size should be 2x of the CXL region size where half is + * DRAM and half is CXL + */ + window->window_size = mock_auto_region_size * 2; +} + static int populate_cedt(void) { struct cxl_mock_res *res; @@ -453,6 +470,7 @@ static int populate_cedt(void) for (i = cfmws_start; i <= cfmws_end; i++) { struct acpi_cedt_cfmws *window = mock_cfmws[i]; + cfmws_elc_update(window, i); res = alloc_mock_res(window->window_size, SZ_256M); if (!res) return -ENOMEM; @@ -783,6 +801,8 @@ static void mock_init_hdm_decoder(struct cxl_decoder *cxld) } base = window->base_hpa; + if (extended_linear_cache) + base += mock_auto_region_size; cxld->hpa_range = (struct range) { .start = base, .end = base + mock_auto_region_size - 1, @@ -1609,6 +1629,8 @@ static __exit void cxl_test_exit(void) module_param(interleave_arithmetic, int, 0444); MODULE_PARM_DESC(interleave_arithmetic, "Modulo:0, XOR:1"); +module_param(extended_linear_cache, bool, 0444); +MODULE_PARM_DESC(extended_linear_cache, "Enable extended linear cache support"); module_init(cxl_test_init); module_exit(cxl_test_exit); MODULE_LICENSE("GPL v2"); |