[PATCH] drm/amdgpu: add vram reservation logic based on vram_usagebyfirmware_v2_2
Liu01, Tong (Esther)
Tong.Liu01 at amd.com
Mon Nov 7 02:36:04 UTC 2022
[AMD Official Use Only - General]
Hi @Koenig, Christian,
Can you help me review the new patch below? Thanks!
Kind regards,
Esther
-----Original Message-----
From: Tong Liu01 <Tong.Liu01 at amd.com>
Sent: 2022年11月4日星期五 下午7:01
To: amd-gfx at lists.freedesktop.org
Cc: Andrey Grodzovsky <Andrey.Grodzovsky at amd.com>; Quan, Evan <Evan.Quan at amd.com>; Chen, Horace <Horace.Chen at amd.com>; Tuikov, Luben <Luben.Tuikov at amd.com>; Koenig, Christian <Christian.Koenig at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>; Xiao, Jack <Jack.Xiao at amd.com>; Zhang, Hawking <Hawking.Zhang at amd.com>; Liu, Monk <Monk.Liu at amd.com>; Xu, Feifei <Feifei.Xu at amd.com>; Wang, Yang(Kevin) <KevinYang.Wang at amd.com>; Liu01, Tong (Esther) <Tong.Liu01 at amd.com>
Subject: [PATCH] drm/amdgpu: add vram reservation logic based on vram_usagebyfirmware_v2_2
Move TMR region from top of FB to 2MB for FFBM, so we need to reserve TMR region firstly to make sure TMR can be allocated at 2MB
Signed-off-by: Tong Liu01 <Tong.Liu01 at amd.com>
---
.../gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | 106 ++++++++++++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 52 +++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 6 +
drivers/gpu/drm/amd/include/atomfirmware.h | 56 ++++++++-
4 files changed, 192 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
index b81b77a9efa6..65cf23818f4e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
@@ -101,39 +101,99 @@ void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev)
}
}
+static int amdgpu_atomfirmware_allocate_fb_v2_1(struct amdgpu_device *adev,
+ struct vram_usagebyfirmware_v2_1 *firmware_usage_v2_1,
+ int *usage_bytes)
+{
+ uint32_t start_addr, size;
+
+ DRM_DEBUG("atom firmware v2_1 requested %08x %dkb fw %dkb drv\n",
+ le32_to_cpu(firmware_usage_v2_1->start_address_in_kb),
+ le16_to_cpu(firmware_usage_v2_1->used_by_firmware_in_kb),
+ le16_to_cpu(firmware_usage_v2_1->used_by_driver_in_kb));
+
+ start_addr = le32_to_cpu(firmware_usage_v2_1->start_address_in_kb);
+ size = le16_to_cpu(firmware_usage_v2_1->used_by_firmware_in_kb);
+
+ if ((uint32_t)(start_addr & ATOM_VRAM_OPERATION_FLAGS_MASK) ==
+ (uint32_t)(ATOM_VRAM_BLOCK_SRIOV_MSG_SHARE_RESERVATION <<
+ ATOM_VRAM_OPERATION_FLAGS_SHIFT)) {
+ /* Firmware request VRAM reservation for SR-IOV */
+ adev->mman.fw_vram_usage_start_offset = (start_addr &
+ (~ATOM_VRAM_OPERATION_FLAGS_MASK)) << 10;
+ adev->mman.fw_vram_usage_size = size << 10;
+ /* Use the default scratch size */
+ usage_bytes = 0;
+ } else {
+ usage_bytes =
+ le16_to_cpu(firmware_usage_v2_1->used_by_driver_in_kb) << 10;
+ }
+ return 0;
+}
+
+static int amdgpu_atomfirmware_allocate_fb_v2_2(struct amdgpu_device *adev,
+ struct vram_usagebyfirmware_v2_2 *firmware_usage_v2_2,
+ int *usage_bytes)
+{
+ uint32_t fw_start_addr, fw_size, drv_start_addr, drv_size;
+
+ DRM_DEBUG("atom requested fw start at %08x %dkb and drv start at %08x %dkb\n",
+ le32_to_cpu(firmware_usage_v2_2->fw_region_start_address_in_kb),
+ le16_to_cpu(firmware_usage_v2_2->used_by_firmware_in_kb),
+ le32_to_cpu(firmware_usage_v2_2->driver_region0_start_address_in_kb),
+ le32_to_cpu(firmware_usage_v2_2->used_by_driver_region0_in_kb));
+
+ fw_start_addr = le32_to_cpu(firmware_usage_v2_2->fw_region_start_address_in_kb);
+ fw_size = le16_to_cpu(firmware_usage_v2_2->used_by_firmware_in_kb);
+
+ drv_start_addr = le32_to_cpu(firmware_usage_v2_2->driver_region0_start_address_in_kb);
+ drv_size =
+le32_to_cpu(firmware_usage_v2_2->used_by_driver_region0_in_kb);
+
+ if ((uint32_t)(fw_start_addr & (ATOM_VRAM_BLOCK_NEEDS_NO_RESERVATION << 30)) == 0) {
+ /* Firmware request VRAM reservation for SR-IOV */
+ adev->mman.fw_vram_usage_start_offset = (fw_start_addr &
+ (~ATOM_VRAM_OPERATION_FLAGS_MASK)) << 10;
+ adev->mman.fw_vram_usage_size = fw_size << 10;
+ }
+
+ if ((uint32_t)(drv_start_addr & (ATOM_VRAM_BLOCK_NEEDS_NO_RESERVATION << 30)) == 0) {
+ /* driver request VRAM reservation for SR-IOV */
+ adev->mman.drv_vram_usage_start_offset = (drv_start_addr &
+ (~ATOM_VRAM_OPERATION_FLAGS_MASK)) << 10;
+ adev->mman.drv_vram_usage_size = drv_size << 10;
+ }
+
+ usage_bytes = 0;
+ return 0;
+}
+
int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev) {
struct atom_context *ctx = adev->mode_info.atom_context;
int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
vram_usagebyfirmware);
- struct vram_usagebyfirmware_v2_1 *firmware_usage;
- uint32_t start_addr, size;
+ struct vram_usagebyfirmware_v2_1 *firmware_usage_v2_1;
+ struct vram_usagebyfirmware_v2_2 *firmware_usage_v2_2;
uint16_t data_offset;
+ uint8_t frev, crev;
int usage_bytes = 0;
- if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
- firmware_usage = (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
- DRM_DEBUG("atom firmware requested %08x %dkb fw %dkb drv\n",
- le32_to_cpu(firmware_usage->start_address_in_kb),
- le16_to_cpu(firmware_usage->used_by_firmware_in_kb),
- le16_to_cpu(firmware_usage->used_by_driver_in_kb));
-
- start_addr = le32_to_cpu(firmware_usage->start_address_in_kb);
- size = le16_to_cpu(firmware_usage->used_by_firmware_in_kb);
-
- if ((uint32_t)(start_addr & ATOM_VRAM_OPERATION_FLAGS_MASK) ==
- (uint32_t)(ATOM_VRAM_BLOCK_SRIOV_MSG_SHARE_RESERVATION <<
- ATOM_VRAM_OPERATION_FLAGS_SHIFT)) {
- /* Firmware request VRAM reservation for SR-IOV */
- adev->mman.fw_vram_usage_start_offset = (start_addr &
- (~ATOM_VRAM_OPERATION_FLAGS_MASK)) << 10;
- adev->mman.fw_vram_usage_size = size << 10;
- /* Use the default scratch size */
- usage_bytes = 0;
- } else {
- usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) << 10;
+ if (amdgpu_atom_parse_data_header(ctx, index, NULL, &frev, &crev, &data_offset)) {
+ if (frev == 2 && crev == 1) {
+ firmware_usage_v2_1 =
+ (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
+ amdgpu_atomfirmware_allocate_fb_v2_1(adev,
+ firmware_usage_v2_1,
+ &usage_bytes);
+ } else if (frev >= 2 && crev >= 2) {
+ firmware_usage_v2_2 =
+ (struct vram_usagebyfirmware_v2_2 *)(ctx->bios + data_offset);
+ amdgpu_atomfirmware_allocate_fb_v2_2(adev,
+ firmware_usage_v2_2,
+ &usage_bytes);
}
}
+
ctx->scratch_size_bytes = 0;
if (usage_bytes == 0)
usage_bytes = 20 * 1024;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 585460ab8dfd..099605380b06 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1578,6 +1578,22 @@ static void amdgpu_ttm_fw_reserve_vram_fini(struct amdgpu_device *adev)
NULL, &adev->mman.fw_vram_usage_va);
}
+/*
+ * Driver Reservation functions
+ */
+/**
+ * amdgpu_ttm_drv_reserve_vram_fini - free drv reserved vram
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * free drv reserved vram if it has been reserved.
+ */
+static void amdgpu_ttm_drv_reserve_vram_fini(struct amdgpu_device
+*adev) {
+ amdgpu_bo_free_kernel(&adev->mman.drv_vram_usage_reserved_bo,
+ NULL, &adev->mman.drv_vram_usage_va); }
+
/**
* amdgpu_ttm_fw_reserve_vram_init - create bo vram reservation from fw
*
@@ -1604,6 +1620,32 @@ static int amdgpu_ttm_fw_reserve_vram_init(struct amdgpu_device *adev)
&adev->mman.fw_vram_usage_va);
}
+/**
+ * amdgpu_ttm_drv_reserve_vram_init - create bo vram reservation from
+driver
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * create bo vram reservation from drv.
+ */
+static int amdgpu_ttm_drv_reserve_vram_init(struct amdgpu_device *adev)
+{
+ uint64_t vram_size = adev->gmc.visible_vram_size;
+
+ adev->mman.drv_vram_usage_va = NULL;
+ adev->mman.drv_vram_usage_reserved_bo = NULL;
+
+ if (adev->mman.drv_vram_usage_size == 0 ||
+ adev->mman.drv_vram_usage_size > vram_size)
+ return 0;
+
+ return amdgpu_bo_create_kernel_at(adev,
+ adev->mman.drv_vram_usage_start_offset,
+ adev->mman.drv_vram_usage_size,
+ AMDGPU_GEM_DOMAIN_VRAM,
+ &adev->mman.drv_vram_usage_reserved_bo,
+ &adev->mman.drv_vram_usage_va);
+}
+
/*
* Memoy training reservation functions
*/
@@ -1771,6 +1813,15 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
return r;
}
+ /*
+ *The reserved vram for driver must be pinned to the specified
+ *place on the VRAM, so reserve it early.
+ */
+ r = amdgpu_ttm_drv_reserve_vram_init(adev);
+ if (r) {
+ return r;
+ }
+
/*
* only NAVI10 and onwards ASIC support for IP discovery.
* If IP discovery enabled, a block of memory should be @@ -1896,6 +1947,7 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev)
amdgpu_bo_free_kernel(&adev->mman.sdma_access_bo, NULL,
&adev->mman.sdma_access_ptr);
amdgpu_ttm_fw_reserve_vram_fini(adev);
+ amdgpu_ttm_drv_reserve_vram_fini(adev);
if (drm_dev_enter(adev_to_drm(adev), &idx)) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index 9120ae80ef52..c60246f32f98 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -92,6 +92,12 @@ struct amdgpu_mman {
struct amdgpu_bo *fw_vram_usage_reserved_bo;
void *fw_vram_usage_va;
+ /* driver VRAM reservation */
+ u64 drv_vram_usage_start_offset;
+ u64 drv_vram_usage_size;
+ struct amdgpu_bo *drv_vram_usage_reserved_bo;
+ void *drv_vram_usage_va;
+
/* PAGE_SIZE'd BO for process memory r/w over SDMA. */
struct amdgpu_bo *sdma_access_bo;
void *sdma_access_ptr;
diff --git a/drivers/gpu/drm/amd/include/atomfirmware.h b/drivers/gpu/drm/amd/include/atomfirmware.h
index ff855cb21d3f..9f8761407099 100644
--- a/drivers/gpu/drm/amd/include/atomfirmware.h
+++ b/drivers/gpu/drm/amd/include/atomfirmware.h
@@ -705,10 +705,47 @@ struct atom_gpio_pin_lut_v2_1 };
-/*
- ***************************************************************************
- Data Table vram_usagebyfirmware structure
- ***************************************************************************
+/*
+ VBIOS/PRE-OS always reserve a FB region at the top of frame buffer. driver should not write access that region.
+ driver can allocate their own reservation region as long as it does not overlap firwmare's reservation region.
+ if( atom data table firmwareInfoTable version < 3.3) { //( pre-NV1X )
+ in this case, atom data table vram_usagebyfirmwareTable version always <= 2.1
+ if( VBIOS/UEFI GOP is posted ) {
+ VBIOS/UEFIGOP update used_by_firmware_in_kb = total reserved size by VBIOS
+ update start_address_in_kb = total_mem_size_in_kb - used_by_firmware_in_kb; ( total_mem_size_in_kb = reg(CONFIG_MEMSIZE)<<10)
+ driver can allocate driver reservation region under firmware reservation,
+ used_by_driver_in_kb = driver reservation size
+ driver reservation start address = (start_address_in_kb - used_by_driver_in_kb)
+ Comment1[hchan]: There is only one reservation at the beginning of the FB reserved by Host driver.
+ Host driver would overwrite the table with the following
+ used_by_firmware_in_kb = total reserved size for pf-vf info exchange and
+ set SRIOV_MSG_SHARE_RESERVATION mask start_address_in_kb = 0
+ } else {
+ there is no VBIOS reservation region
+ driver must allocate driver reservation region at top of FB.
+ driver set used_by_driver_in_kb = driver reservation size
+ driver reservation start address = (total_mem_size_in_kb - used_by_driver_in_kb)
+ same as Comment1
+ }
+ } else { //( NV1X and after)
+ if( VBIOS/UEFI GOP is posted ) {
+ VBIOS/UEFIGOP update used_by_firmware_in_kb = atom_firmware_Info_v3_3.fw_reserved_size_in_kb;
+ update start_address_in_kb = total_mem_size_in_kb - used_by_firmware_in_kb; ( total_mem_size_in_kb = reg(CONFIG_MEMSIZE)<<10 )
+ }
+ if( vram_usagebyfirmwareTable version <= 2.1 ) {
+ driver can allocate driver reservation region under firmware reservation,
+ driver set used_by_driver_in_kb = driver reservation size
+ driver reservation start address = (start_address_in_kb - used_by_driver_in_kb)
+ same as Comment1
+ } else {
+ dirver can allocate it reservation any place as long as it does overlap pre-OS FW reservation area
+ driver set used_by_driver_region0_in_kb = driver reservation size
+ driver set driver_region0_start_address_in_kb = driver reservation region start address
+ Comment2[hchan]: Host driver can set used_by_firmware_in_kb and start_address_in_kb to zero
+ as the reservation for VF as it doesn’t exist. And Host driver should also
+ update atom_firmware_Info table to remove the same VBIOS reservation as well.
+ }
+ }
*/
struct vram_usagebyfirmware_v2_1
@@ -716,9 +753,18 @@ struct vram_usagebyfirmware_v2_1
struct atom_common_table_header table_header;
uint32_t start_address_in_kb;
uint16_t used_by_firmware_in_kb;
- uint16_t used_by_driver_in_kb;
+ uint16_t used_by_driver_in_kb;
};
+struct vram_usagebyfirmware_v2_2{
+ struct atom_common_table_header table_header;
+ uint32_t fw_region_start_address_in_kb;
+ uint16_t used_by_firmware_in_kb;
+ uint16_t reserved;
+ uint32_t driver_region0_start_address_in_kb;
+ uint32_t used_by_driver_region0_in_kb;
+ uint32_t reserved32[7];
+};
/*
***************************************************************************
--
2.25.1
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