lwn.git/drivers/gpu/drm/amd/amdgpu/si_dpm.h, branch v6.9

drm/amd/pm: optimize the power related source code layout

2020-08-14T20:22:41+00:00

The target is to provide a clear entry point(for power routines). Also this can help to maintain a clear view about the frameworks used on different ASICs. Hopefully all these can make power part more friendly to play with. Signed-off-by: Evan Quan Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/radeon/dpm: Replace one-element array and use struct_size() helper

2020-05-28T18:00:50+00:00

The current codebase makes use of one-element arrays in the following form: struct something { int length; u8 data[1]; }; struct something *instance; instance = kmalloc(sizeof(*instance) + size, GFP_KERNEL); instance->length = size; memcpy(instance->data, source, size); but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. So, replace the one-element array with a flexible-array member. Also, make use of the new struct_size() helper to properly calculate the size of struct NISLANDS_SMC_SWSTATE. This issue was found with the help of Coccinelle and, audited and fixed _manually_. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Reviewed-by: Christian König Signed-off-by: Gustavo A. R. Silva Signed-off-by: Alex Deucher

drm/amdgpu: Remove wrapper layer of smu ip functions

2018-03-15T14:57:50+00:00

1. delete amdgpu_powerplay.c used for wrapping smu ip functions 2. delete struct pp_instance, 3. make struct hwmgr as the smu hw handle. Reviewed-by: Alex Deucher Reviewed-by: Evan Quan Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu: unify the interface of amd_pm_funcs

2017-09-19T03:30:35+00:00

put amd_pm_funcs table in struct powerplay for all asics. Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu: add SI DPM support (v4)

2016-08-31T19:21:09+00:00

v2: corrected register offset shift v3: rebase fixes v4: fix firmware paths add SI smc firmware versions for sysfs dump remove unused function forward define fix the tahiti specific value of DEEP_SLEEP_CLK_SEL field fix to miss adding thermal controller use vram_type instead of checking mem_gddr5 flag fix incorrect index of CG_FFCT_0 register fix incorrect reading method at si_get_current_pcie_speed Signed-off-by: Maruthi Bayyavarapu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher