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drm/amdgpu: add tmz feature parameter (v2) 

This patch adds tmz parameter to enable/disable
the feature in the amdgpu kernel module. Nomally,
by default, it should be auto (rely on the
hardware capability).

But right now, it need to set "off" to avoid
breaking other developers' work because it's not
totally completed.

Will set "auto" till the feature is stable and
completely verified.

v2: add "auto" option for future use.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2019-08-04 16:33:16 +08:00 committed by Alex Deucher
parent c5efd80f48
commit d7ccb38df5
2 changed files with 13 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -189,6 +189,8 @@ extern int sched_policy;
static const int sched_policy = KFD_SCHED_POLICY_HWS;
#endif
extern int amdgpu_tmz;
#ifdef CONFIG_DRM_AMDGPU_SI
extern int amdgpu_si_support;
#endif

11
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -145,6 +145,7 @@ int amdgpu_discovery = -1;
int amdgpu_mes = 0;
int amdgpu_noretry;
int amdgpu_force_asic_type = -1;
int amdgpu_tmz = 0;
struct amdgpu_mgpu_info mgpu_info = {
.mutex = __MUTEX_INITIALIZER(mgpu_info.mutex),
@ -729,6 +730,16 @@ uint amdgpu_dm_abm_level = 0;
MODULE_PARM_DESC(abmlevel, "ABM level (0 = off (default), 1-4 = backlight reduction level) ");
module_param_named(abmlevel, amdgpu_dm_abm_level, uint, 0444);
/**
* DOC: tmz (int)
* Trusted Memory Zone (TMZ) is a method to protect data being written
* to or read from memory.
*
* The default value: 0 (off). TODO: change to auto till it is completed.
*/
MODULE_PARM_DESC(tmz, "Enable TMZ feature (-1 = auto, 0 = off (default), 1 = on)");
module_param_named(tmz, amdgpu_tmz, int, 0444);
static const struct pci_device_id pciidlist[] = {
#ifdef CONFIG_DRM_AMDGPU_SI
{0x1002, 0x6780, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TAHITI},