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X-OriginatorOrg: micron.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Oct 2024 04:32:26.7421 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 34c7960e-8b22-436c-40cd-08dced9b89e5 X-MS-Exchange-CrossTenant-Id: f38a5ecd-2813-4862-b11b-ac1d563c806f X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f38a5ecd-2813-4862-b11b-ac1d563c806f;Ip=[137.201.242.130];Helo=[mail.micron.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB4A.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA3PR08MB10532 Adding support for aborting timed out background operations CXL r3.1 8.2.9.1.5 Request Abort Background Operation. If the status of a mailbox command is identified as timedout, an abort background operation request is sent to the device. Link: https://lore.kernel.org/linux-cxl/66035c2e8ba17_770232948b@dwillia2-xfh.jf.= intel.com.notmuch/ Signed-off-by: Ravi Shankar --- =A0drivers/cxl/cxlmem.h |=A0 1 + =A0drivers/cxl/pci.c=A0=A0=A0 | 11 +++++++++++ =A02 files changed, 12 insertions(+) diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index d8c0894797ac..808fb8712145 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -516,6 +516,7 @@ to_cxl_memdev_state(struct cxl_dev_state *cxlds) =A0enum cxl_opcode { =A0=A0=A0=A0=A0=A0=A0=A0 CXL_MBOX_OP_INVALID=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0 =3D 0x0000, =A0=A0=A0=A0=A0=A0=A0=A0 CXL_MBOX_OP_RAW=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0 =3D CXL_MBOX_OP_INVALID, +=A0=A0=A0=A0=A0=A0 CXL_MBOX_OP_REQ_ABRT_BACKGROUND_OPERATION=A0=A0=A0 =3D = 0x0005, =A0=A0=A0=A0=A0=A0=A0=A0 CXL_MBOX_OP_GET_EVENT_RECORD=A0=A0=A0 =3D 0x0100, =A0=A0=A0=A0=A0=A0=A0=A0 CXL_MBOX_OP_CLEAR_EVENT_RECORD=A0 =3D 0x0101, =A0=A0=A0=A0=A0=A0=A0=A0 CXL_MBOX_OP_GET_EVT_INT_POLICY=A0 =3D 0x0102, diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c index d5d6142f6aa3..95c1f329bca2 100644 --- a/drivers/cxl/pci.c +++ b/drivers/cxl/pci.c @@ -394,6 +394,17 @@ static int cxl_pci_mbox_send(struct cxl_mailbox *cxl_m= box, =A0 =A0=A0=A0=A0=A0=A0=A0=A0 mutex_lock_io(&cxl_mbox->mbox_mutex); =A0=A0=A0=A0=A0=A0=A0=A0 rc =3D __cxl_pci_mbox_send_cmd(cxl_mbox, cmd); +=A0=A0=A0=A0=A0=A0 if (rc =3D=3D -ETIMEDOUT && +=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 cmd->return_code =3D=3D CXL_MBO= X_CMD_RC_BACKGROUND) { +=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 struct cxl_mbox_cmd abort_cmd = =3D { +=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 .opcode= =3D CXL_MBOX_OP_REQ_ABRT_BACKGROUND_OPERATION +=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 }; + +=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 rc =3D __cxl_pci_mbox_send_cmd(= cxl_mbox, &abort_cmd); +=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 if (!rc) +=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 rc =3D = -ECANCELED; +=A0=A0=A0=A0=A0=A0 } + =A0=A0=A0=A0=A0=A0=A0=A0 mutex_unlock(&cxl_mbox->mbox_mutex); =A0 =A0=A0=A0=A0=A0=A0=A0=A0 return rc; --=20 2.43.0 =