CXL uses PCI AER Internal errors to signal to the host that an error has
occurred. The host can then read more detailed status from the CXL RAS
capability.
For uncorrectable errors: support multiple injection in one operation
as this is needed to reliably test multiple header logging support in an
OS. The equivalent feature doesn't exist for correctable errors, so only
one error need be injected at a time.
Note:
- Header content needs to be manually specified in a fashion that
matches the specification for what can be in the header for each
error type.
Injection via QMP:
{ "execute": "qmp_capabilities" }
...
{ "execute": "cxl-inject-uncorrectable-errors",
"arguments": {
"path": "/machine/peripheral/cxl-pmem0",
"errors": [
{
"type": "cache-address-parity",
"header": [ 3, 4]
},
{
"type": "cache-data-parity",
"header":
[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31]
},
{
"type": "internal",
"header": [ 1, 2, 4]
}
]
}}
...
{ "execute": "cxl-inject-correctable-error",
"arguments": {
"path": "/machine/peripheral/cxl-pmem0",
"type": "physical"
} }
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v6: (Thanks to Philippe Mathieu-Daudé)
- Add Since entries in cxl.json
- Add error prints in the stub functions so that if they are called without
CONFIG_CXL_MEM_DEVICE then we get a useful print rather than just silently
eating them.
---
hw/cxl/cxl-component-utils.c | 4 +-
hw/mem/cxl_type3.c | 281 +++++++++++++++++++++++++++++++++
hw/mem/cxl_type3_stubs.c | 17 ++
hw/mem/meson.build | 2 +
include/hw/cxl/cxl_component.h | 26 +++
include/hw/cxl/cxl_device.h | 11 ++
qapi/cxl.json | 128 +++++++++++++++
qapi/meson.build | 1 +
qapi/qapi-schema.json | 1 +
9 files changed, 470 insertions(+), 1 deletion(-)