diff options
| author | Izhar Ameer Shaikh <izhar.ameer.shaikh@amd.com> | 2025-10-21 14:30:01 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-10-30 06:00:48 +0300 |
| commit | 00b3e8480be7a49203594bd1fdb4fd46f3b69d59 (patch) | |
| tree | e17e519c4bdaeaec562977c4088f02f050904c65 /include/linux | |
| parent | 754c6f539effa8ad332e305e34665849638fa40f (diff) | |
| download | linux-00b3e8480be7a49203594bd1fdb4fd46f3b69d59.tar.xz | |
scsi: firmware: xilinx: Add support for secure read/write ioctl interface
Add support for a generic ioctl read/write interface using which users
can request firmware to perform read/write operations on a protected and
secure address space.
The functionality is introduced through the means of two new IOCTL IDs
which extend the existing PM_IOCTL EEMI API:
- IOCTL_READ_REG
- IOCTL_MASK_WRITE_REG
The caller only passes the node id of the given device and an offset.
The base address is not exposed to the caller and internally retrieved
by the firmware. Firmware will enforce an access policy on the incoming
read/write request.
Signed-off-by: Izhar Ameer Shaikh <izhar.ameer.shaikh@amd.com>
Reviewed-by: Tanmay Shah <tanmay.shah@amd.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Acked-by: Senthil Nathan Thangaraj <senthilnathan.thangaraj@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Acked-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20251021113003.13650-3-ajay.neeli@amd.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/firmware/xlnx-zynqmp.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index ae48d619c4e0..b161f37de5cc 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -241,6 +241,7 @@ enum pm_ioctl_id { IOCTL_GET_FEATURE_CONFIG = 27, /* IOCTL for Secure Read/Write Interface */ IOCTL_READ_REG = 28, + IOCTL_MASK_WRITE_REG = 29, /* Dynamic SD/GEM configuration */ IOCTL_SET_SD_CONFIG = 30, IOCTL_SET_GEM_CONFIG = 31, @@ -619,6 +620,9 @@ int zynqmp_pm_feature(const u32 api_id); int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id); int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value); int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload); +int zynqmp_pm_sec_read_reg(u32 node_id, u32 offset, u32 *ret_value); +int zynqmp_pm_sec_mask_write_reg(const u32 node_id, const u32 offset, + u32 mask, u32 value); int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset); int zynqmp_pm_force_pwrdwn(const u32 target, const enum zynqmp_pm_request_ack ack); @@ -916,6 +920,17 @@ static inline int zynqmp_pm_request_wake(const u32 node, return -ENODEV; } +static inline int zynqmp_pm_sec_read_reg(u32 node_id, u32 offset, u32 *ret_value) +{ + return -ENODEV; +} + +static inline int zynqmp_pm_sec_mask_write_reg(const u32 node_id, const u32 offset, + u32 mask, u32 value) +{ + return -ENODEV; +} + static inline int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode) { return -ENODEV; |