[PATCH 5/8] drm/amdgpu/atomfirmware: add memory training related helper functions
Tianci Yin
tianci.yin at amd.com
Fri Oct 11 03:50:30 UTC 2019
From: "Tianci.Yin" <tianci.yin at amd.com>
parse firmware to get memory training capability and fb location.
Change-Id: I147c1d48e255e0191be4beb1ad6b637da607bf75
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Tianci.Yin <tianci.yin at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 7 +
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 5 +
.../gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | 133 ++++++++++++++++++
.../gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h | 1 +
4 files changed, 146 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 1102e6bae5d5..e3d715c31ac9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -291,6 +291,9 @@ struct amdgpu_ip_block_version {
const struct amd_ip_funcs *funcs;
};
+#define hw_revision(major, minor, revision) \
+ ((((uint32_t) major) << 16) | ((uint32_t) minor << 8) | ((uint32_t) revision))
+
struct amdgpu_ip_block {
struct amdgpu_ip_block_status status;
const struct amdgpu_ip_block_version *version;
@@ -633,6 +636,10 @@ struct amdgpu_fw_vram_usage {
u64 size;
struct amdgpu_bo *reserved_bo;
void *va;
+
+ /*offset on the top of vram, used as c2p write buffer*/
+ u64 mem_train_fb_loc;
+ bool mem_train_support;
};
/*
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 1c9d40f97a9b..72232fccf61a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -2038,6 +2038,11 @@ int amdgpu_atombios_init(struct amdgpu_device *adev)
if (adev->is_atom_fw) {
amdgpu_atomfirmware_scratch_regs_init(adev);
amdgpu_atomfirmware_allocate_fb_scratch(adev);
+ ret = amdgpu_atomfirmware_get_mem_train_fb_loc(adev);
+ if (ret) {
+ DRM_ERROR("Failed to get mem train fb location.\n");
+ return ret;
+ }
} else {
amdgpu_atombios_scratch_regs_init(adev);
amdgpu_atombios_allocate_fb_scratch(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
index 39fd8ae5a822..1ebf5e9a9b7b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
@@ -27,6 +27,7 @@
#include "amdgpu_atomfirmware.h"
#include "atom.h"
#include "atombios.h"
+#include "soc15_hw_ip.h"
bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev)
{
@@ -462,3 +463,135 @@ int amdgpu_atomfirmware_get_gfx_info(struct amdgpu_device *adev)
}
return -EINVAL;
}
+
+/*
+ * Check if VBIOS supports GDDR6 training data save/restore
+ */
+static bool gddr6_mem_train_vbios_support(struct amdgpu_device *adev)
+{
+ uint16_t data_offset;
+ int index;
+
+ index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
+ firmwareinfo);
+ if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
+ NULL, NULL, &data_offset)) {
+ struct atom_firmware_info_v3_1 *firmware_info =
+ (struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
+ data_offset);
+
+ DRM_DEBUG("atom firmware capability:0x%08x.\n",
+ le32_to_cpu(firmware_info->firmware_capability));
+
+ if (le32_to_cpu(firmware_info->firmware_capability) &
+ ATOM_FIRMWARE_CAP_ENABLE_2STAGE_BIST_TRAINING)
+ return true;
+ }
+
+ return false;
+}
+
+static int gddr6_mem_train_support(struct amdgpu_device *adev)
+{
+ int ret;
+ bool vbios_support;
+ uint32_t major, minor, revision, hw_v;
+
+ if (!amdgpu_sriov_vf(adev) &&
+ gddr6_mem_train_vbios_support(adev)) {
+ vbios_support = true;
+ } else {
+ vbios_support = false;
+ }
+ amdgpu_discovery_get_ip_version(adev, MP0_HWID, &major, &minor, &revision);
+ hw_v = hw_revision(major, minor, revision);
+ /*
+ * treat 0 revision as a special case since register for MP0 and MMHUB is missing
+ * for some Navi10 A0, preventing driver from discovering the hwip information since
+ * none of the functions will be initialized, it should not cause any problems
+ */
+ switch (hw_v) {
+ case hw_revision(11, 0, 0):
+ case hw_revision(11, 0, 5):
+ ret = vbios_support;
+ break;
+ default:
+ if (vbios_support) {
+ DRM_ERROR("memory training vbios supports but psp hw(%08x)"
+ " doesn't support!\n", hw_v);
+ ret = -1;
+ } else {
+ ret = 0;
+ }
+ break;
+ }
+
+ DRM_DEBUG("mp0 hw_v %08x, ret:%d.\n", hw_v, ret);
+ return ret;
+}
+
+int amdgpu_atomfirmware_get_mem_train_fb_loc(struct amdgpu_device *adev)
+{
+ struct atom_context *ctx = adev->mode_info.atom_context;
+ unsigned char *bios = ctx->bios;
+ struct vram_reserve_block *reserved_block;
+ int index, block_number;
+ uint8_t frev, crev;
+ uint16_t data_offset, size;
+ uint32_t start_address_in_kb;
+ uint64_t offset;
+ int ret;
+
+ adev->fw_vram_usage.mem_train_support = false;
+ ret = gddr6_mem_train_support(adev);
+ if (ret == -1)
+ return -EINVAL;
+ else if (ret == 0)
+ return 0;
+
+ index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
+ vram_usagebyfirmware);
+ ret = amdgpu_atom_parse_data_header(ctx, index, &size, &frev, &crev,
+ &data_offset);
+ if (ret == 0) {
+ DRM_ERROR("parse data header failed.\n");
+ return -EINVAL;
+ }
+
+ DRM_DEBUG("atom firmware common table header size:0x%04x, frev:0x%02x,"
+ " crev:0x%02x, data_offset:0x%04x.\n", size, frev, crev, data_offset);
+ /* only support 2.1+ */
+ if (((uint16_t)frev << 8 | crev) < 0x0201) {
+ DRM_ERROR("frev:0x%02x, crev:0x%02x < 2.1 !\n", frev, crev);
+ return -EINVAL;
+ }
+
+ reserved_block = (struct vram_reserve_block *)
+ (bios + data_offset + sizeof(struct atom_common_table_header));
+ block_number = ((unsigned int)size - sizeof(struct atom_common_table_header))
+ / sizeof(struct vram_reserve_block);
+ reserved_block += (block_number > 0) ? block_number-1 : 0;
+ DRM_DEBUG("block_number:0x%04x, last block: 0x%08xkb sz, %dkb fw, %dkb drv.\n",
+ block_number,
+ le32_to_cpu(reserved_block->start_address_in_kb),
+ le16_to_cpu(reserved_block->used_by_firmware_in_kb),
+ le16_to_cpu(reserved_block->used_by_driver_in_kb));
+ if (reserved_block->used_by_firmware_in_kb > 0) {
+ start_address_in_kb = le32_to_cpu(reserved_block->start_address_in_kb);
+ offset = (uint64_t)start_address_in_kb * ONE_K;
+ if ((offset & (ONE_MEG - 1)) < (4 * ONE_K + 1) ) {
+ offset -= ONE_MEG;
+ }
+
+ offset &= ~(ONE_MEG - 1);
+ adev->fw_vram_usage.mem_train_fb_loc = offset;
+ adev->fw_vram_usage.mem_train_support = true;
+ DRM_DEBUG("mem_train_fb_loc:0x%09llx.\n", offset);
+ ret = 0;
+ } else {
+ DRM_ERROR("used_by_firmware_in_kb is 0!\n");
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
index 53449fc7baf4..f871af5ea6f3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
@@ -31,6 +31,7 @@ void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev);
int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev);
int amdgpu_atomfirmware_get_vram_info(struct amdgpu_device *adev,
int *vram_width, int *vram_type, int *vram_vendor);
+int amdgpu_atomfirmware_get_mem_train_fb_loc(struct amdgpu_device *adev);
int amdgpu_atomfirmware_get_clock_info(struct amdgpu_device *adev);
int amdgpu_atomfirmware_get_gfx_info(struct amdgpu_device *adev);
bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev);
--
2.17.1
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