diff options
| author | Ernst Sjöstrand <ernstp@gmail.com> | 2017-11-19 18:52:46 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-12-06 12:48:00 -0500 |
| commit | 8cdbad98c52380bde20ea5753533640d2cdcc005 (patch) | |
| tree | cb4b476b41cf3ecc48a092ba78ced093fe692a9b /drivers/gpu/drm/amd/powerplay | |
| parent | 47e8788b4924b0e3348caf4ad08de5a162bfc4cd (diff) | |
drm/amd/powerplay: Followup fixes to mc_reg_address
This is a followup to:
drm/amd/powerplay: Fix buffer overflows with mc_reg_address
Rework *_set_mc_special_registers for the other architectures to
use the same logic as the first patch. This allows the last entry
of the array to be filled without an error message for example.
This doesn't fix any known problems, perhaps avoided by luck.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ernst Sjöstrand <ernstp@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/smumgr/ci_smumgr.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c | 12 |
2 files changed, 8 insertions, 16 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/ci_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/ci_smumgr.c index ed4b37e566a3..c36f00ef46f3 100644 --- a/drivers/gpu/drm/amd/powerplay/smumgr/ci_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/ci_smumgr.c @@ -2600,9 +2600,9 @@ static int ci_set_mc_special_registers(struct pp_hwmgr *hwmgr, ((table->mc_reg_table_entry[k].mc_data[i] & 0xffff0000) >> 16); } j++; + PP_ASSERT_WITH_CODE((j < SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE), "Invalid VramInfo table.", return -EINVAL); - temp_reg = cgs_read_register(hwmgr->device, mmMC_PMG_CMD_MRS); table->mc_reg_address[j].s1 = mmMC_PMG_CMD_MRS; table->mc_reg_address[j].s0 = mmMC_SEQ_PMG_CMD_MRS_LP; @@ -2615,10 +2615,10 @@ static int ci_set_mc_special_registers(struct pp_hwmgr *hwmgr, table->mc_reg_table_entry[k].mc_data[j] |= 0x100; } j++; - PP_ASSERT_WITH_CODE((j <= SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE), - "Invalid VramInfo table.", return -EINVAL); - if (!data->is_memory_gddr5 && j < SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE) { + if (!data->is_memory_gddr5) { + PP_ASSERT_WITH_CODE((j < SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE), + "Invalid VramInfo table.", return -EINVAL); table->mc_reg_address[j].s1 = mmMC_PMG_AUTO_CMD; table->mc_reg_address[j].s0 = mmMC_PMG_AUTO_CMD; for (k = 0; k < table->num_entries; k++) { @@ -2626,8 +2626,6 @@ static int ci_set_mc_special_registers(struct pp_hwmgr *hwmgr, (table->mc_reg_table_entry[k].mc_data[i] & 0xffff0000) >> 16; } j++; - PP_ASSERT_WITH_CODE((j <= SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE), - "Invalid VramInfo table.", return -EINVAL); } break; @@ -2642,8 +2640,6 @@ static int ci_set_mc_special_registers(struct pp_hwmgr *hwmgr, (table->mc_reg_table_entry[k].mc_data[i] & 0x0000ffff); } j++; - PP_ASSERT_WITH_CODE((j <= SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE), - "Invalid VramInfo table.", return -EINVAL); break; default: diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c index 2ff682d44e8c..d62078681cae 100644 --- a/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c @@ -2549,9 +2549,9 @@ static int iceland_set_mc_special_registers(struct pp_hwmgr *hwmgr, ((table->mc_reg_table_entry[k].mc_data[i] & 0xffff0000) >> 16); } j++; + PP_ASSERT_WITH_CODE((j < SMU71_DISCRETE_MC_REGISTER_ARRAY_SIZE), "Invalid VramInfo table.", return -EINVAL); - temp_reg = cgs_read_register(hwmgr->device, mmMC_PMG_CMD_MRS); table->mc_reg_address[j].s1 = mmMC_PMG_CMD_MRS; table->mc_reg_address[j].s0 = mmMC_SEQ_PMG_CMD_MRS_LP; @@ -2565,10 +2565,10 @@ static int iceland_set_mc_special_registers(struct pp_hwmgr *hwmgr, } } j++; - PP_ASSERT_WITH_CODE((j <= SMU71_DISCRETE_MC_REGISTER_ARRAY_SIZE), - "Invalid VramInfo table.", return -EINVAL); - if (!data->is_memory_gddr5 && j < SMU71_DISCRETE_MC_REGISTER_ARRAY_SIZE) { + if (!data->is_memory_gddr5) { + PP_ASSERT_WITH_CODE((j < SMU71_DISCRETE_MC_REGISTER_ARRAY_SIZE), + "Invalid VramInfo table.", return -EINVAL); table->mc_reg_address[j].s1 = mmMC_PMG_AUTO_CMD; table->mc_reg_address[j].s0 = mmMC_PMG_AUTO_CMD; for (k = 0; k < table->num_entries; k++) { @@ -2576,8 +2576,6 @@ static int iceland_set_mc_special_registers(struct pp_hwmgr *hwmgr, (table->mc_reg_table_entry[k].mc_data[i] & 0xffff0000) >> 16; } j++; - PP_ASSERT_WITH_CODE((j <= SMU71_DISCRETE_MC_REGISTER_ARRAY_SIZE), - "Invalid VramInfo table.", return -EINVAL); } break; @@ -2592,8 +2590,6 @@ static int iceland_set_mc_special_registers(struct pp_hwmgr *hwmgr, (table->mc_reg_table_entry[k].mc_data[i] & 0x0000ffff); } j++; - PP_ASSERT_WITH_CODE((j <= SMU71_DISCRETE_MC_REGISTER_ARRAY_SIZE), - "Invalid VramInfo table.", return -EINVAL); break; default: |