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Message-ID: <20221207004443.33779-2-shannon.nelson@amd.com>
Date: Tue, 6 Dec 2022 16:44:28 -0800
From: Shannon Nelson <shannon.nelson@....com>
To: <netdev@...r.kernel.org>, <davem@...emloft.net>, <kuba@...nel.org>
CC: <drivers@...sando.io>, Shannon Nelson <shannon.nelson@....com>
Subject: [PATCH v2 net-next 01/16] devlink: add fw bank select parameter
Add a new device generic parameter to select the bank of
firmware to be used on future boot and/or resets in those
devices that have multiple firmware memory banks. This can
be used along with the FW_LOAD_POLICY parameter, depending on
the capabilities of the particular device.
Examples:
$ devlink dev param set pci/0000:07:00.0 name fw_bank value 1 cmode permanent
$ devlink dev param show pci/0000:07:00.0 name fw_bank
pci/0000:07:00.0:
name fw_bank type generic
values:
cmode permanent value 1
Link: https://lore.kernel.org/netdev/CO1PR11MB508942BE965E63893DE9B86AD6129@CO1PR11MB5089.namprd11.prod.outlook.com/
Signed-off-by: Shannon Nelson <shannon.nelson@....com>
---
Documentation/networking/devlink/devlink-params.rst | 4 ++++
include/net/devlink.h | 4 ++++
net/core/devlink.c | 5 +++++
3 files changed, 13 insertions(+)
diff --git a/Documentation/networking/devlink/devlink-params.rst b/Documentation/networking/devlink/devlink-params.rst
index 4e01dc32bc08..7cf1cd68ff08 100644
--- a/Documentation/networking/devlink/devlink-params.rst
+++ b/Documentation/networking/devlink/devlink-params.rst
@@ -137,3 +137,7 @@ own name.
* - ``event_eq_size``
- u32
- Control the size of asynchronous control events EQ.
+ * - ``fw_bank``
+ - u8
+ - Select the bank of firmware to be used on future boot and/or resets in
+ devices that have multiple firmware memory banks.
diff --git a/include/net/devlink.h b/include/net/devlink.h
index 5f6eca5e4a40..3fa26a26fa44 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -510,6 +510,7 @@ enum devlink_param_generic_id {
DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
+ DEVLINK_PARAM_GENERIC_ID_FW_BANK,
/* add new param generic ids above here*/
__DEVLINK_PARAM_GENERIC_ID_MAX,
@@ -568,6 +569,9 @@ enum devlink_param_generic_id {
#define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME "event_eq_size"
#define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U32
+#define DEVLINK_PARAM_GENERIC_FW_BANK_NAME "fw_bank"
+#define DEVLINK_PARAM_GENERIC_FW_BANK_TYPE DEVLINK_PARAM_TYPE_U8
+
#define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate) \
{ \
.id = DEVLINK_PARAM_GENERIC_ID_##_id, \
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 907df7124157..25a075f0aadd 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -5221,6 +5221,11 @@ static const struct devlink_param devlink_param_generic[] = {
.name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
.type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
},
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_FW_BANK,
+ .name = DEVLINK_PARAM_GENERIC_FW_BANK_NAME,
+ .type = DEVLINK_PARAM_GENERIC_FW_BANK_TYPE,
+ },
};
static int devlink_param_generic_verify(const struct devlink_param *param)
--
2.17.1
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