linux-stable/drivers/cxl
Dave Jiang ce17ad0d54 cxl: Wait Memory_Info_Valid before access memory related info
The Memory_Info_Valid bit (CXL 3.0 8.1.3.8.2) indicates that the CXL
Range Size High and Size Low registers are valid. The bit must be set
within 1 second of reset deassertion to the device. Check valid bit
before we check the Memory_Active bit when waiting for
cxl_await_media_ready() to ensure that the memory info is valid for
consumption. Also ensures both DVSEC ranges 1 and 2 are ready if DVSEC
Capability indicates they are both supported.

Fixes: 523e594d9c ("cxl/pci: Implement wait for media active")
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/168444687469.3134781.11033518965387297327.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2023-05-18 16:42:41 -07:00
..
core cxl: Wait Memory_Info_Valid before access memory related info 2023-05-18 16:42:41 -07:00
Kconfig Merge branch 'for-6.3/cxl-ram-region' into cxl/next 2023-02-10 18:11:01 -08:00
Makefile cxl/pmem: Introduce nvdimm_security_ops with ->get_flags() operation 2022-11-30 16:30:47 -08:00
acpi.c Merge branch 'for-6.3/cxl-ram-region' into cxl/next 2023-02-10 18:11:01 -08:00
cxl.h cxl/port: Enable the HDM decoder capability for switch ports 2023-05-18 13:18:49 -07:00
cxlmem.h cxl/mbox: Update CMD_RC_TABLE 2023-04-23 12:10:26 -07:00
cxlpci.h cxl: Wait Memory_Info_Valid before access memory related info 2023-05-18 16:42:41 -07:00
mem.c cxl/mem: Add debugfs attributes for poison inject and clear 2023-04-23 12:08:39 -07:00
pci.c Merge branch 'for-6.4/cxl-poison' into for-6.4/cxl 2023-04-23 12:09:56 -07:00
pmem.c cxl/pmem: Fix nvdimm registration races 2023-02-13 17:01:05 -08:00
port.c cxl/port: Enable the HDM decoder capability for switch ports 2023-05-18 13:18:49 -07:00
security.c cxl/mbox: Enable cxl_mbox_send_cmd() users to validate output size 2022-12-06 14:36:02 -08:00