On 07/27/ , Christian König wrote:
> Am 27.07.23 um 09:56 schrieb Lang Yu:
> > TMR requires physical contiguous memory, amdgpu_bo_create_kernel()
> > can't satisfy large(>128MB) physical contiguous memory allocation
> > request with default 512MB VRAM on APU.
> >
> > When requested TMR size > 128MB, use amdgpu_bo_create_kernel_at()
> > to create the TMR BO at offset 64MB.
>
> Well complete NAK, you have misunderstood what amdgpu_bo_create_kernel_at()
> is doing.
OK. Either taking over or creating memory area, amdgpu_bo_create series
functions should satisfy the client's memory request.
Anyway, amdgpu_bo_create_kernel_at() just works.
Regards,
Lang
> Regards,
> Christian.
>
> >
> > Signed-off-by: Lang Yu <Lang.Yu@xxxxxxx>
> > ---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 42 ++++++++++++++++---------
> > 1 file changed, 28 insertions(+), 14 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> > index 15217e33b51d..2eac82113d34 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> > @@ -783,13 +783,38 @@ static bool psp_boottime_tmr(struct psp_context *psp)
> > }
> > }
> > +static inline int psp_create_tmr_bo(struct psp_context *psp, int tmr_size)
> > +{
> > + void *tmr_buf;
> > + void **pptr;
> > + int ret;
> > +
> > + if (psp->tmr_bo)
> > + return 0;
> > +
> > + pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
> > +
> > + if (psp->adev->flags & AMD_IS_APU && tmr_size > 0x8000000)
> > + ret = amdgpu_bo_create_kernel_at(psp->adev, 0x4000000, tmr_size,
> > + &psp->tmr_bo, &psp->tmr_mc_addr,
> > + pptr);
> > + else
> > + ret = amdgpu_bo_create_kernel(psp->adev, tmr_size,
> > + PSP_TMR_ALIGNMENT,
> > + AMDGPU_HAS_VRAM(psp->adev) ?
> > + AMDGPU_GEM_DOMAIN_VRAM :
> > + AMDGPU_GEM_DOMAIN_GTT,
> > + &psp->tmr_bo, &psp->tmr_mc_addr,
> > + pptr);
> > +
> > + return ret;
> > +}
> > +
> > /* Set up Trusted Memory Region */
> > static int psp_tmr_init(struct psp_context *psp)
> > {
> > int ret = 0;
> > int tmr_size;
> > - void *tmr_buf;
> > - void **pptr;
> > /*
> > * According to HW engineer, they prefer the TMR address be "naturally
> > @@ -813,18 +838,7 @@ static int psp_tmr_init(struct psp_context *psp)
> > }
> > }
> > - 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_HAS_VRAM(psp->adev) ?
> > - AMDGPU_GEM_DOMAIN_VRAM :
> > - AMDGPU_GEM_DOMAIN_GTT,
> > - &psp->tmr_bo, &psp->tmr_mc_addr,
> > - pptr);
> > - }
> > -
> > - return ret;
> > + return psp_create_tmr_bo(psp, tmr_size);
> > }
> > static bool psp_skip_tmr(struct psp_context *psp)
>
