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tegra: hwpm: Linux: IOCTL for Credit Programming

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- Add IOCTL infra for Credit programming in Linux based
OSs.

Bug 4571175

Signed-off-by: vasukis <vasukis@nvidia.com>
Change-Id: I1a5ff5aefcf8da6ad85507d71c0a9bd3b7f31f6d
Reviewed-on: https://git-master.nvidia.com/r/c/linux-hwpm/+/3136565
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
This commit is contained in:
vasukis
2024-05-13 19:00:50 +00:00
committed by mobile promotions
parent b5f2672134
commit 5d80b2edb5
4 changed files with 107 additions and 3 deletions
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51
include/uapi/linux/tegra-soc-hwpm-uapi.h
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@@ -166,6 +166,45 @@ struct tegra_soc_hwpm_reserve_resource {
enum tegra_soc_hwpm_resource resource;
};
/* Enum for Credit programming states */
enum tegra_soc_hwpm_credit_cmd {
TEGRA_SOC_HWPM_CMD_SET_HS_CREDITS,
TEGRA_SOC_HWPM_CMD_GET_HS_CREDITS,
TEGRA_SOC_HWPM_CMD_GET_TOTAL_HS_CREDITS,
TEGRA_SOC_HWPM_CMD_GET_CHIPLET_HS_CREDITS_POOL,
TEGRA_SOC_HWPM_CMD_GET_HS_CREDITS_MAPPING
};
struct tegra_soc_hwpm_credits_info {
/*
* Input
*/
__u8 cblock_idx; /* Cblock ID */
/*
* Input/Output
*/
__u32 num_credits; /* Number of credits per chiplet */
};
#define TEGRA_SOC_HWPM_MAX_CREDIT_INFO_ENTRIES 8
/* TEGRA_CTRL_CMD_SOC_HWPM_CREDIT_PROGRAM */
struct tegra_soc_hwpm_exec_credit_program {
/*
* Inputs
*/
__u16 credit_cmd; /* enum tegra_soc_hwpm_credit_cmd */
__u8 pma_channel_idx; /* For multi-channel support */
__u8 num_entries;
struct tegra_soc_hwpm_credits_info credit_info[TEGRA_SOC_HWPM_MAX_CREDIT_INFO_ENTRIES];
/*
* Output
*/
__u8 status_info; /* Return the status. To be used for future use*/
};
/* TEGRA_CTRL_CMD_SOC_HWPM_ALLOC_PMA_STREAM IOCTL */
struct tegra_soc_hwpm_alloc_pma_stream {
/*
@@ -324,6 +363,7 @@ enum tegra_soc_hwpm_ioctl_num {
TEGRA_SOC_HWPM_IOCTL_QUERY_ALLOWLIST,
TEGRA_SOC_HWPM_IOCTL_EXEC_REG_OPS,
TEGRA_SOC_HWPM_IOCTL_UPDATE_GET_PUT,
TEGRA_SOC_HWPM_IOCTL_CREDIT_PROGRAM,
TERGA_SOC_HWPM_NUM_IOCTLS
};
@@ -428,6 +468,17 @@ enum tegra_soc_hwpm_ioctl_num {
TEGRA_SOC_HWPM_IOCTL_UPDATE_GET_PUT, \
struct tegra_soc_hwpm_update_get_put)
/*
* IOCTl for initiating Credit Programming
*
* This IOCTL executes read-write access to SECURE REGISTERS
*
*/
#define TEGRA_CTRL_CMD_SOC_HWPM_CREDIT_PROGRAM \
_IOWR(TEGRA_SOC_HWPM_IOC_MAGIC, \
TEGRA_SOC_HWPM_IOCTL_CREDIT_PROGRAM, \
struct tegra_soc_hwpm_exec_credit_program)
#define TEGRA_SOC_HWPM_MAX_ARG_SIZE \
sizeof(struct tegra_soc_hwpm_exec_reg_ops)