diff options
Diffstat (limited to 'meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0004-firmware-arm_scmi-Add-per-message-transport-data.patch')
| -rw-r--r-- | meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0004-firmware-arm_scmi-Add-per-message-transport-data.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0004-firmware-arm_scmi-Add-per-message-transport-data.patch b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0004-firmware-arm_scmi-Add-per-message-transport-data.patch new file mode 100644 index 00000000..644b015d --- /dev/null +++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0004-firmware-arm_scmi-Add-per-message-transport-data.patch @@ -0,0 +1,42 @@ +From 0771d1d96e6439c00497a521f8d2c9803f7e07e2 Mon Sep 17 00:00:00 2001 +From: Igor Skalkin <igor.skalkin@opensynergy.com> +Date: Thu, 5 Nov 2020 22:21:10 +0100 +Subject: [PATCH] firmware: arm_scmi: Add per message transport data + +The virtio transport in this patch series can be simplified by using the +scmi_xfer tx/rx buffers for data exchange with the virtio device, and +for saving the message state. But the virtio transport requires +prepending a transport-specific header. Also, for data exchange using +virtqueues, the tx and rx buffers should not overlap. + +The first step to solve the aforementioned issues is to add a +transport-specific data pointer to scmi_xfer. + +Co-developed-by: Peter Hilber <peter.hilber@opensynergy.com> +Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com> +Signed-off-by: Igor Skalkin <igor.skalkin@opensynergy.com> +Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@opensynergy.com> +--- + drivers/firmware/arm_scmi/common.h | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h +index 9a8359ecd220..c998ec29018e 100644 +--- a/drivers/firmware/arm_scmi/common.h ++++ b/drivers/firmware/arm_scmi/common.h +@@ -131,6 +131,7 @@ struct scmi_msg { + * buffer for the rx path as we use for the tx path. + * @done: command message transmit completion event + * @async_done: pointer to delayed response message received event completion ++ * @extra_data: Transport-specific private data pointer + */ + struct scmi_xfer { + int transfer_id; +@@ -139,6 +140,7 @@ struct scmi_xfer { + struct scmi_msg rx; + struct completion done; + struct completion *async_done; ++ void *extra_data; + }; + + void scmi_xfer_put(const struct scmi_handle *h, struct scmi_xfer *xfer); |