File dmanegine-idxd-add-software-command-status.patch of Package linux-glibc-devel.29087
From 125d10373ad991888c9e94d2da49bcc5ccba2127 Mon Sep 17 00:00:00 2001
From: Dave Jiang <dave.jiang@intel.com>
Date: Tue, 20 Jul 2021 13:42:15 -0700
Subject: [PATCH] dmanegine: idxd: add software command status
Git-commit: 125d10373ad991888c9e94d2da49bcc5ccba2127
Patch-mainline: v5.15-rc1
References: jsc#SLE-18899
Enabling device and wq returns standard errno and that does not provide
enough details to indicate what exactly failed. The hardware command status
is only 8bits. Expand the command status to 32bits and use the upper 16
bits to define software errors to provide more details on the exact
failure. Bit 31 will be used to indicate the error is software set as the
driver is using some of the spec defined hardware error as well.
Cc: Ramesh Thomas <ramesh.thomas@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162681373579.1968485.5891788397526827892.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
.../ABI/stable/sysfs-driver-dma-idxd | 2 ++
drivers/dma/idxd/cdev.c | 5 +++-
drivers/dma/idxd/device.c | 22 +++++++++++++++---
drivers/dma/idxd/dma.c | 4 ++++
drivers/dma/idxd/idxd.h | 2 +-
drivers/dma/idxd/sysfs.c | 11 ++++++++-
include/uapi/linux/idxd.h | 23 +++++++++++++++++++
7 files changed, 63 insertions(+), 6 deletions(-)
diff --git a/include/uapi/linux/idxd.h b/include/uapi/linux/idxd.h
--- a/include/linux/idxd.h
+++ b/include/linux/idxd.h
@@ -9,6 +9,29 @@
#include <stdint.h>
+/* Driver command error status */
+enum idxd_scmd_stat {
+ IDXD_SCMD_DEV_ENABLED = 0x80000010,
+ IDXD_SCMD_DEV_NOT_ENABLED = 0x80000020,
+ IDXD_SCMD_WQ_ENABLED = 0x80000021,
+ IDXD_SCMD_DEV_DMA_ERR = 0x80020000,
+ IDXD_SCMD_WQ_NO_GRP = 0x80030000,
+ IDXD_SCMD_WQ_NO_NAME = 0x80040000,
+ IDXD_SCMD_WQ_NO_SVM = 0x80050000,
+ IDXD_SCMD_WQ_NO_THRESH = 0x80060000,
+ IDXD_SCMD_WQ_PORTAL_ERR = 0x80070000,
+ IDXD_SCMD_WQ_RES_ALLOC_ERR = 0x80080000,
+ IDXD_SCMD_PERCPU_ERR = 0x80090000,
+ IDXD_SCMD_DMA_CHAN_ERR = 0x800a0000,
+ IDXD_SCMD_CDEV_ERR = 0x800b0000,
+ IDXD_SCMD_WQ_NO_SWQ_SUPPORT = 0x800c0000,
+ IDXD_SCMD_WQ_NONE_CONFIGURED = 0x800d0000,
+ IDXD_SCMD_WQ_NO_SIZE = 0x800e0000,
+};
+
+#define IDXD_SCMD_SOFTERR_MASK 0x80000000
+#define IDXD_SCMD_SOFTERR_SHIFT 16
+
/* Descriptor flags */
#define IDXD_OP_FLAG_FENCE 0x0001
#define IDXD_OP_FLAG_BOF 0x0002
--
2.26.2
