Close, but not perfect. Reading an address seem to work, but the
--vm-decode output is a bit confusing:
> [VERBOSE]: PDE0=0x00000003fefff001, VA=0x000000000000,
> PBA==0x0003fefff000, V=1, S=0, C=0, P=0
> [VERBOSE]:Â Â Â \-> PDE1=0x00000003feffe001, VA=0x400000000000,
> PBA==0x0003feffe000, V=1, S=0, C=0, P=0
> [VERBOSE]:Â Â Â Â Â Â \-> PDE2=0x00000003feffd001, VA=0x000000000000,
> PBA==0x0003feffd000, V=1, S=0, C=0, P=0
> [VERBOSE]:Â Â Â Â Â Â Â Â Â \-> PDE3=0x0040000394c004f7, VA=0x000000200000,
> PBA==0x000394c00000, V=1, S=1, C=1, P=1
> [VERBOSE]:Â Â Â Â Â Â Â Â Â Â Â Â \-> PTE==0x0040000394c004f7, VA=0x000000018000,
> PBA==0x000394c00000, V=1, S=1
PDE3 actually doesn't exists and instead it's the PTE pointing to the
resulting address.
Regards,
Christian.
Am 04.11.2017 um 00:54 schrieb Tom St Denis:
> Signed-off-by: Tom St Denis <tom.stdenis at amd.com>
> ---
> src/lib/read_vram.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/src/lib/read_vram.c b/src/lib/read_vram.c
> index 0df48dadec12..5d9523476e25 100644
> --- a/src/lib/read_vram.c
> +++ b/src/lib/read_vram.c
> @@ -522,6 +522,11 @@ static int umr_access_vram_ai(struct umr_asic *asic, uint32_t vmid,
> (int)pde_fields.pte);
> memcpy(&pde_array[pde_cnt++], &pde_fields, sizeof pde_fields);
>
> + if (pde_fields.pte) {
> + pte_entry = pde_entry;
> + goto pde_is_pte;
> + }
> +
> if (!pde_fields.system)
> pde_fields.pte_base_addr -= vm_fb_offset;
>
> @@ -539,6 +544,7 @@ static int umr_access_vram_ai(struct umr_asic *asic, uint32_t vmid,
> return -1;
>
> // decode PTE values
> +pde_is_pte:
> pte_fields.page_base_addr = pte_entry & 0xFFFFFFFFFF000ULL;
> pte_fields.fragment = (pte_entry >> 7) & 0x1F;
> pte_fields.system = (pte_entry >> 1) & 1;
