diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0134-bus-fsl-mc-Add-dprc-reset-container-support.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0134-bus-fsl-mc-Add-dprc-reset-container-support.patch | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0134-bus-fsl-mc-Add-dprc-reset-container-support.patch b/target/linux/layerscape/patches-5.4/701-net-0134-bus-fsl-mc-Add-dprc-reset-container-support.patch new file mode 100644 index 0000000000..a609905a9e --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0134-bus-fsl-mc-Add-dprc-reset-container-support.patch @@ -0,0 +1,99 @@ +From 350201cc09a58dcf5c49f636238b01637f5ee06d Mon Sep 17 00:00:00 2001 +From: Laurentiu Tudor <laurentiu.tudor@nxp.com> +Date: Fri, 13 Apr 2018 11:35:10 +0300 +Subject: [PATCH] bus: fsl-mc: Add dprc-reset-container support + +DPRC-reset is required for VFIO and is missing from +mc-bus support. +This patch added reset-container support. + +Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com> +Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> +--- + drivers/bus/fsl-mc/dprc.c | 41 +++++++++++++++++++++++++++++++++++++ + drivers/bus/fsl-mc/fsl-mc-private.h | 10 +++++++++ + 2 files changed, 51 insertions(+) + +--- a/drivers/bus/fsl-mc/dprc.c ++++ b/drivers/bus/fsl-mc/dprc.c +@@ -73,6 +73,47 @@ int dprc_close(struct fsl_mc_io *mc_io, + EXPORT_SYMBOL_GPL(dprc_close); + + /** ++ * dprc_reset_container - Reset child container. ++ * @mc_io: Pointer to MC portal's I/O object ++ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' ++ * @token: Token of DPRC object ++ * @child_container_id: ID of the container to reset ++ * ++ * In case a software context crashes or becomes non-responsive, the parent ++ * may wish to reset its resources container before the software context is ++ * restarted. ++ * ++ * This routine informs all objects assigned to the child container that the ++ * container is being reset, so they may perform any cleanup operations that are ++ * needed. All objects handles that were owned by the child container shall be ++ * closed. ++ * ++ * Note that such request may be submitted even if the child software context ++ * has not crashed, but the resulting object cleanup operations will not be ++ * aware of that. ++ * ++ * Return: '0' on Success; Error code otherwise. ++ */ ++int dprc_reset_container(struct fsl_mc_io *mc_io, ++ u32 cmd_flags, ++ u16 token, ++ int child_container_id) ++{ ++ struct fsl_mc_command cmd = { 0 }; ++ struct dprc_cmd_reset_container *cmd_params; ++ ++ /* prepare command */ ++ cmd.header = mc_encode_cmd_header(DPRC_CMDID_RESET_CONT, ++ cmd_flags, token); ++ cmd_params = (struct dprc_cmd_reset_container *)cmd.params; ++ cmd_params->child_container_id = cpu_to_le32(child_container_id); ++ ++ /* send command to mc*/ ++ return mc_send_command(mc_io, &cmd); ++} ++EXPORT_SYMBOL_GPL(dprc_reset_container); ++ ++/** + * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' +--- a/drivers/bus/fsl-mc/fsl-mc-private.h ++++ b/drivers/bus/fsl-mc/fsl-mc-private.h +@@ -93,6 +93,7 @@ int dpmcp_reset(struct fsl_mc_io *mc_io, + #define DPRC_CMDID_GET_API_VERSION DPRC_CMD(0xa05) + + #define DPRC_CMDID_GET_ATTR DPRC_CMD(0x004) ++#define DPRC_CMDID_RESET_CONT DPRC_CMD(0x005) + + #define DPRC_CMDID_SET_IRQ DPRC_CMD(0x010) + #define DPRC_CMDID_SET_IRQ_ENABLE DPRC_CMD(0x012) +@@ -111,6 +112,10 @@ struct dprc_cmd_open { + __le32 container_id; + }; + ++struct dprc_cmd_reset_container { ++ __le32 child_container_id; ++}; ++ + struct dprc_cmd_set_irq { + /* cmd word 0 */ + __le32 irq_val; +@@ -394,6 +399,11 @@ int dprc_get_container_id(struct fsl_mc_ + u32 cmd_flags, + int *container_id); + ++int dprc_reset_container(struct fsl_mc_io *mc_io, ++ u32 cmd_flags, ++ u16 token, ++ int child_container_id); ++ + /* + * Data Path Buffer Pool (DPBP) API + */ |