[PATCH 2/2] drm/amdgpu: Add ability to determine and report if board supports ECC.
David Panariti
David.Panariti at amd.com
Tue Sep 26 22:25:09 UTC 2017
Make initialization code check the ECC related registers, which are initialized
by the VBIOS, to see if ECC is present and initialized and DRM_INFO() the
result.
Change-Id: I8617269809cf3641c5151291ad5d964f55f7f835
Signed-off-by: David Panariti <David.Panariti at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 207 ++++++++++++++++++++++++++++++++++
1 file changed, 207 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index bc7b9c7..67f3f56 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -34,6 +34,7 @@
#include "vega10/vega10_enum.h"
#include "soc15_common.h"
+#include "vega10/UMC/umc_6_0_sh_mask.h"
#include "nbio_v6_1.h"
#include "nbio_v7_0.h"
@@ -71,6 +72,122 @@ static const u32 golden_settings_vega10_hdp[] =
0xf6e, 0x0fffffff, 0x00000000,
};
+/* Ecc related register addresses, (BASE + reg offset) */
+
+/* Universal Memory Controller caps (may be fused). */
+/* UMCCH:UmcLocalCap */
+#define UMCLOCALCAPS_ADDR0 (0x00014306 + 0x00000000)
+#define UMCLOCALCAPS_ADDR1 (0x00014306 + 0x00000800)
+#define UMCLOCALCAPS_ADDR2 (0x00014306 + 0x00001000)
+#define UMCLOCALCAPS_ADDR3 (0x00014306 + 0x00001800)
+#define UMCLOCALCAPS_ADDR4 (0x00054306 + 0x00000000)
+#define UMCLOCALCAPS_ADDR5 (0x00054306 + 0x00000800)
+#define UMCLOCALCAPS_ADDR6 (0x00054306 + 0x00001000)
+#define UMCLOCALCAPS_ADDR7 (0x00054306 + 0x00001800)
+#define UMCLOCALCAPS_ADDR8 (0x00094306 + 0x00000000)
+#define UMCLOCALCAPS_ADDR9 (0x00094306 + 0x00000800)
+#define UMCLOCALCAPS_ADDR10 (0x00094306 + 0x00001000)
+#define UMCLOCALCAPS_ADDR11 (0x00094306 + 0x00001800)
+#define UMCLOCALCAPS_ADDR12 (0x000d4306 + 0x00000000)
+#define UMCLOCALCAPS_ADDR13 (0x000d4306 + 0x00000800)
+#define UMCLOCALCAPS_ADDR14 (0x000d4306 + 0x00001000)
+#define UMCLOCALCAPS_ADDR15 (0x000d4306 + 0x00001800)
+
+/* Universal Memory Controller Channel config. */
+/* UMCCH:UMC_CONFIG */
+#define UMCCH_UMC_CONFIG_ADDR0 (0x00014040 + 0x00000000)
+#define UMCCH_UMC_CONFIG_ADDR1 (0x00014040 + 0x00000800)
+#define UMCCH_UMC_CONFIG_ADDR2 (0x00014040 + 0x00001000)
+#define UMCCH_UMC_CONFIG_ADDR3 (0x00014040 + 0x00001800)
+#define UMCCH_UMC_CONFIG_ADDR4 (0x00054040 + 0x00000000)
+#define UMCCH_UMC_CONFIG_ADDR5 (0x00054040 + 0x00000800)
+#define UMCCH_UMC_CONFIG_ADDR6 (0x00054040 + 0x00001000)
+#define UMCCH_UMC_CONFIG_ADDR7 (0x00054040 + 0x00001800)
+#define UMCCH_UMC_CONFIG_ADDR8 (0x00094040 + 0x00000000)
+#define UMCCH_UMC_CONFIG_ADDR9 (0x00094040 + 0x00000800)
+#define UMCCH_UMC_CONFIG_ADDR10 (0x00094040 + 0x00001000)
+#define UMCCH_UMC_CONFIG_ADDR11 (0x00094040 + 0x00001800)
+#define UMCCH_UMC_CONFIG_ADDR12 (0x000d4040 + 0x00000000)
+#define UMCCH_UMC_CONFIG_ADDR13 (0x000d4040 + 0x00000800)
+#define UMCCH_UMC_CONFIG_ADDR14 (0x000d4040 + 0x00001000)
+#define UMCCH_UMC_CONFIG_ADDR15 (0x000d4040 + 0x00001800)
+
+/* Universal Memory Controller Channel Ecc config. */
+/* UMCCH:EccCtrl */
+#define UMCCH_ECCCTRL_ADDR0 (0x00014053 + 0x00000000)
+#define UMCCH_ECCCTRL_ADDR1 (0x00014053 + 0x00000800)
+#define UMCCH_ECCCTRL_ADDR2 (0x00014053 + 0x00001000)
+#define UMCCH_ECCCTRL_ADDR3 (0x00014053 + 0x00001800)
+#define UMCCH_ECCCTRL_ADDR4 (0x00054053 + 0x00000000)
+#define UMCCH_ECCCTRL_ADDR5 (0x00054053 + 0x00000800)
+#define UMCCH_ECCCTRL_ADDR6 (0x00054053 + 0x00001000)
+#define UMCCH_ECCCTRL_ADDR7 (0x00054053 + 0x00001800)
+#define UMCCH_ECCCTRL_ADDR8 (0x00094053 + 0x00000000)
+#define UMCCH_ECCCTRL_ADDR9 (0x00094053 + 0x00000800)
+#define UMCCH_ECCCTRL_ADDR10 (0x00094053 + 0x00001000)
+#define UMCCH_ECCCTRL_ADDR11 (0x00094053 + 0x00001800)
+#define UMCCH_ECCCTRL_ADDR12 (0x000d4053 + 0x00000000)
+#define UMCCH_ECCCTRL_ADDR13 (0x000d4053 + 0x00000800)
+#define UMCCH_ECCCTRL_ADDR14 (0x000d4053 + 0x00001000)
+#define UMCCH_ECCCTRL_ADDR15 (0x000d4053 + 0x00001800)
+
+static const uint32_t ecc_umclocalcap_addrs[] = {
+ UMCLOCALCAPS_ADDR0,
+ UMCLOCALCAPS_ADDR1,
+ UMCLOCALCAPS_ADDR2,
+ UMCLOCALCAPS_ADDR3,
+ UMCLOCALCAPS_ADDR4,
+ UMCLOCALCAPS_ADDR5,
+ UMCLOCALCAPS_ADDR6,
+ UMCLOCALCAPS_ADDR7,
+ UMCLOCALCAPS_ADDR8,
+ UMCLOCALCAPS_ADDR9,
+ UMCLOCALCAPS_ADDR10,
+ UMCLOCALCAPS_ADDR11,
+ UMCLOCALCAPS_ADDR12,
+ UMCLOCALCAPS_ADDR13,
+ UMCLOCALCAPS_ADDR14,
+ UMCLOCALCAPS_ADDR15,
+};
+
+static const uint32_t ecc_umcch_umc_config_addrs[] = {
+ UMCCH_UMC_CONFIG_ADDR0,
+ UMCCH_UMC_CONFIG_ADDR1,
+ UMCCH_UMC_CONFIG_ADDR2,
+ UMCCH_UMC_CONFIG_ADDR3,
+ UMCCH_UMC_CONFIG_ADDR4,
+ UMCCH_UMC_CONFIG_ADDR5,
+ UMCCH_UMC_CONFIG_ADDR6,
+ UMCCH_UMC_CONFIG_ADDR7,
+ UMCCH_UMC_CONFIG_ADDR8,
+ UMCCH_UMC_CONFIG_ADDR9,
+ UMCCH_UMC_CONFIG_ADDR10,
+ UMCCH_UMC_CONFIG_ADDR11,
+ UMCCH_UMC_CONFIG_ADDR12,
+ UMCCH_UMC_CONFIG_ADDR13,
+ UMCCH_UMC_CONFIG_ADDR14,
+ UMCCH_UMC_CONFIG_ADDR15,
+};
+
+static const uint32_t ecc_umcch_eccctrl_addrs[] = {
+ UMCCH_ECCCTRL_ADDR0,
+ UMCCH_ECCCTRL_ADDR1,
+ UMCCH_ECCCTRL_ADDR2,
+ UMCCH_ECCCTRL_ADDR3,
+ UMCCH_ECCCTRL_ADDR4,
+ UMCCH_ECCCTRL_ADDR5,
+ UMCCH_ECCCTRL_ADDR6,
+ UMCCH_ECCCTRL_ADDR7,
+ UMCCH_ECCCTRL_ADDR8,
+ UMCCH_ECCCTRL_ADDR9,
+ UMCCH_ECCCTRL_ADDR10,
+ UMCCH_ECCCTRL_ADDR11,
+ UMCCH_ECCCTRL_ADDR12,
+ UMCCH_ECCCTRL_ADDR13,
+ UMCCH_ECCCTRL_ADDR14,
+ UMCCH_ECCCTRL_ADDR15,
+};
+
static int gmc_v9_0_vm_fault_interrupt_state(struct amdgpu_device *adev,
struct amdgpu_irq_src *src,
unsigned type,
@@ -392,11 +509,91 @@ static int gmc_v9_0_early_init(void *handle)
return 0;
}
+static int gmc_v9_0_ecc_available(struct amdgpu_device *adev)
+{
+ uint32_t reg_val;
+ uint32_t reg_addr;
+ uint32_t field_val;
+ size_t i;
+ uint32_t fv2;
+ size_t lost_sheep;
+
+ DRM_DEBUG("ecc: gmc_v9_0_ecc_available()\n");
+
+ lost_sheep = 0;
+ for (i = 0; i < ARRAY_SIZE(ecc_umclocalcap_addrs); ++i) {
+ reg_addr = ecc_umclocalcap_addrs[i];
+ DRM_DEBUG("ecc: "
+ "UMCCH_UmcLocalCap[%zu]: reg_addr: 0x%08x\n",
+ i, reg_addr);
+ reg_val = RREG32(reg_addr);
+ field_val = REG_GET_FIELD(reg_val, UMCCH0_0_UmcLocalCap,
+ EccDis);
+ DRM_DEBUG("ecc: "
+ "reg_val: 0x%08x, "
+ "EccDis: 0x%08x, ",
+ reg_val, field_val);
+ if (field_val) {
+ DRM_ERROR("ecc: UmcLocalCap:EccDis is set.\n");
+ ++lost_sheep;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ecc_umcch_umc_config_addrs); ++i) {
+ reg_addr = ecc_umcch_umc_config_addrs[i];
+ DRM_DEBUG("ecc: "
+ "UMCCH0_0_UMC_CONFIG[%zu]: reg_addr: 0x%08x",
+ i, reg_addr);
+ reg_val = RREG32(reg_addr);
+ field_val = REG_GET_FIELD(reg_val, UMCCH0_0_UMC_CONFIG,
+ DramReady);
+ DRM_DEBUG("ecc: "
+ "reg_val: 0x%08x, "
+ "DramReady: 0x%08x\n",
+ reg_val, field_val);
+
+ if (!field_val) {
+ DRM_ERROR("ecc: UMC_CONFIG:DramReady is not set.\n");
+ ++lost_sheep;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ecc_umcch_eccctrl_addrs); ++i) {
+ reg_addr = ecc_umcch_eccctrl_addrs[i];
+ DRM_DEBUG("ecc: "
+ "UMCCH_EccCtrl[%zu]: reg_addr: 0x%08x, ",
+ i, reg_addr);
+ reg_val = RREG32(reg_addr);
+ field_val = REG_GET_FIELD(reg_val, UMCCH0_0_EccCtrl,
+ WrEccEn);
+ fv2 = REG_GET_FIELD(reg_val, UMCCH0_0_EccCtrl,
+ RdEccEn);
+ DRM_DEBUG("ecc: "
+ "reg_val: 0x%08x, "
+ "WrEccEn: 0x%08x, "
+ "RdEccEn: 0x%08x\n",
+ reg_val, field_val, fv2);
+
+ if (!field_val) {
+ DRM_ERROR("ecc: WrEccEn is not set\n");
+ ++lost_sheep;
+ }
+ if (!fv2) {
+ DRM_ERROR("ecc: RdEccEn is not set\n");
+ ++lost_sheep;
+ }
+ }
+
+ DRM_DEBUG("ecc: lost_sheep: %zu\n", lost_sheep);
+ return lost_sheep == 0;
+}
+
static int gmc_v9_0_late_init(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
unsigned vm_inv_eng[AMDGPU_MAX_VMHUBS] = { 4, 4 };
unsigned i;
+ int r;
for(i = 0; i < adev->num_rings; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
@@ -412,6 +609,16 @@ static int gmc_v9_0_late_init(void *handle)
for(i = 0; i < AMDGPU_MAX_VMHUBS; ++i)
BUG_ON(vm_inv_eng[i] > 17);
+ r = gmc_v9_0_ecc_available(adev);
+ if (r == 1) {
+ DRM_INFO("ECC is active.\n");
+ } else if (r == 0) {
+ DRM_INFO("ECC is not present.\n");
+ } else {
+ DRM_ERROR("gmc_v9_0_ecc_available() failed. r: %d\n", r);
+ return r;
+ }
+
return amdgpu_irq_get(adev, &adev->mc.vm_fault, 0);
}
--
2.7.4
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