mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
37df9560cd
This new debugfs interface uses an IOCTL interface in order to pass
along state information like SRBM and GRBM bank switching. This
new interface also allows a full 32-bit MMIO address range which
the previous didn't. With this new design we have room to grow
the flexibility of the file as need be.
(v2): Move read/write to .read/.write, fix style, add comment
for IOCTL data structure
(v3): C style comments
(v4): use u32 in struct and remove offset variable
(v5): Drop flag clearing in op function, use 0xFFFFFFFF for broadcast
instead of 0x3FF, use mutex for op/ioctl.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/*
|
|
* Copyright 2021 Advanced Micro Devices, Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
#include <linux/ioctl.h>
|
|
|
|
/*
|
|
* MMIO debugfs IOCTL structure
|
|
*/
|
|
struct amdgpu_debugfs_regs2_iocdata {
|
|
__u32 use_srbm, use_grbm, pg_lock;
|
|
struct {
|
|
__u32 se, sh, instance;
|
|
} grbm;
|
|
struct {
|
|
__u32 me, pipe, queue, vmid;
|
|
} srbm;
|
|
};
|
|
|
|
/*
|
|
* MMIO debugfs state data (per file* handle)
|
|
*/
|
|
struct amdgpu_debugfs_regs2_data {
|
|
struct amdgpu_device *adev;
|
|
struct mutex lock;
|
|
struct amdgpu_debugfs_regs2_iocdata id;
|
|
};
|
|
|
|
enum AMDGPU_DEBUGFS_REGS2_CMDS {
|
|
AMDGPU_DEBUGFS_REGS2_CMD_SET_STATE=0,
|
|
};
|
|
|
|
#define AMDGPU_DEBUGFS_REGS2_IOC_SET_STATE _IOWR(0x20, AMDGPU_DEBUGFS_REGS2_CMD_SET_STATE, struct amdgpu_debugfs_regs2_iocdata)
|