xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

platform/x86: ISST: Add IOCTL to Translate Linux logical CPU to PUNIT CPU number

Browse Source 
Add processing for IOCTL command ISST_IF_GET_PHY_ID. This converts from the
Linux logical CPU to PUNIT CPU numbering scheme.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Srinivas Pandruvada
2019-06-26 15:38:45 -07:00
committed by Andy Shevchenko
parent 8fbfb6fc67
commit fb5b36a413
2 changed files with 102 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
include/uapi/linux/isst_if.h
View File

@@ -36,6 +36,34 @@ struct isst_if_platform_info {
__u8 mmio_supported;
};
/**
* struct isst_if_cpu_map - CPU mapping between logical and physical CPU
* @logical_cpu: Linux logical CPU number
* @physical_cpu: PUNIT CPU number
*
* Used to convert from Linux logical CPU to PUNIT CPU numbering scheme.
* The PUNIT CPU number is different than APIC ID based CPU numbering.
*/
struct isst_if_cpu_map {
__u32 logical_cpu;
__u32 physical_cpu;
};
/**
* struct isst_if_cpu_maps - structure for CPU map IOCTL
* @cmd_count: Number of CPU mapping command in cpu_map[]
* @cpu_map[]: Holds one or more CPU map data structure
*
* This structure used with ioctl ISST_IF_GET_PHY_ID to send
* one or more CPU mapping commands. Here IOCTL return value indicates
* number of commands sent or error number if no commands have been sent.
*/
struct isst_if_cpu_maps {
__u32 cmd_count;
struct isst_if_cpu_map cpu_map[1];
};
#define ISST_IF_MAGIC 0xFE
#define ISST_IF_GET_PLATFORM_INFO _IOR(ISST_IF_MAGIC, 0, struct isst_if_platform_info *)
#define ISST_IF_GET_PHY_ID _IOWR(ISST_IF_MAGIC, 1, struct isst_if_cpu_map *)
#endif