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drm/amdgpu/psp: don't free PSP buffers on suspend 

We can reuse the same buffers on resume.

v2: squash in S4 fix from Shikai

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2213
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2022-11-16 11:26:53 -05:00
parent 91abf28a63
commit 4f2bea62cf
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
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@ -172,6 +172,7 @@ void psp_ta_free_shared_buf(struct ta_mem_context *mem_ctx)
{
amdgpu_bo_free_kernel(&mem_ctx->shared_bo, &mem_ctx->shared_mc_addr,
&mem_ctx->shared_buf);
mem_ctx->shared_bo = NULL;
}
static void psp_free_shared_bufs(struct psp_context *psp)
@ -182,6 +183,7 @@ static void psp_free_shared_bufs(struct psp_context *psp)
/* free TMR memory buffer */
pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
amdgpu_bo_free_kernel(&psp->tmr_bo, &psp->tmr_mc_addr, pptr);
psp->tmr_bo = NULL;
/* free xgmi shared memory */
psp_ta_free_shared_buf(&psp->xgmi_context.context.mem_context);
@ -743,7 +745,7 @@ static int psp_load_toc(struct psp_context *psp,
/* Set up Trusted Memory Region */
static int psp_tmr_init(struct psp_context *psp)
{
int ret;
int ret = 0;
int tmr_size;
void *tmr_buf;
void **pptr;
@ -770,10 +772,12 @@ static int psp_tmr_init(struct psp_context *psp)
}
}
pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
ret = amdgpu_bo_create_kernel(psp->adev, tmr_size, PSP_TMR_ALIGNMENT,
AMDGPU_GEM_DOMAIN_VRAM,
&psp->tmr_bo, &psp->tmr_mc_addr, pptr);
if (!psp->tmr_bo) {
pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
ret = amdgpu_bo_create_kernel(psp->adev, tmr_size, PSP_TMR_ALIGNMENT,
AMDGPU_GEM_DOMAIN_VRAM,
&psp->tmr_bo, &psp->tmr_mc_addr, pptr);
}
return ret;
}
@ -2732,8 +2736,6 @@ static int psp_suspend(void *handle)
}
out:
psp_free_shared_bufs(psp);
return ret;
}