Re: [PATCH v2 1/7] drm/amdgpu: Added init/fini functions for workload

From: Shashank Sharma
Date: Mon Aug 21 2023 - 10:28:02 EST



On 21/08/2023 16:12, Yadav, Arvind wrote:

On 8/21/2023 7:24 PM, Shashank Sharma wrote:

On 21/08/2023 15:35, Yadav, Arvind wrote:

On 8/21/2023 6:36 PM, Shashank Sharma wrote:
Hey Arvind,

On 21/08/2023 08:47, Arvind Yadav wrote:
The'struct amdgpu_smu_workload' initialization/cleanup
functions is added by this patch.

v2:
- Splitting big patch into separate patches.
- Added new fini function.

Cc: Shashank Sharma <shashank.sharma@xxxxxxx>
Cc: Christian Koenig <christian.koenig@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Arvind Yadav <Arvind.Yadav@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/Makefile           |  2 +-
  drivers/gpu/drm/amd/amdgpu/amdgpu.h           |  3 ++
  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |  4 ++
  drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c  | 44 +++++++++++++++
  drivers/gpu/drm/amd/include/amdgpu_workload.h | 53 +++++++++++++++++++
  5 files changed, 105 insertions(+), 1 deletion(-)
  create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
  create mode 100644 drivers/gpu/drm/amd/include/amdgpu_workload.h

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index 415a7fa395c4..6a9e187d61e1 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -60,7 +60,7 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
      amdgpu_umc.o smu_v11_0_i2c.o amdgpu_fru_eeprom.o amdgpu_rap.o \
      amdgpu_fw_attestation.o amdgpu_securedisplay.o \
      amdgpu_eeprom.o amdgpu_mca.o amdgpu_psp_ta.o amdgpu_lsdma.o \
-    amdgpu_ring_mux.o
+    amdgpu_ring_mux.o amdgpu_workload.o
    amdgpu-$(CONFIG_PROC_FS) += amdgpu_fdinfo.o
  diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 02b827785e39..1939fa1af8a6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -107,6 +107,7 @@
  #include "amdgpu_fdinfo.h"
  #include "amdgpu_mca.h"
  #include "amdgpu_ras.h"
+#include "amdgpu_workload.h"
    #define MAX_GPU_INSTANCE        16
  @@ -1050,6 +1051,8 @@ struct amdgpu_device {
        bool                            job_hang;
      bool                            dc_enabled;
+
+    struct amdgpu_smu_workload    smu_workload;
  };
    static inline struct amdgpu_device *drm_to_adev(struct drm_device *ddev)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 5c7d40873ee2..cd3bf641b630 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2243,6 +2243,8 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
      adev->cg_flags &= amdgpu_cg_mask;
      adev->pg_flags &= amdgpu_pg_mask;
  +    amdgpu_workload_profile_init(adev);
+
      return 0;
  }
  @@ -2890,6 +2892,8 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
  {
      int i, r;
  +    amdgpu_workload_profile_fini(adev);
+
      if (amdgpu_sriov_vf(adev) && adev->virt.ras_init_done)
          amdgpu_virt_release_ras_err_handler_data(adev);
  diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
new file mode 100644
index 000000000000..32166f482f77
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright 2023 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "amdgpu.h"
+
+void amdgpu_workload_profile_init(struct amdgpu_device *adev)
+{
+    adev->smu_workload.adev = adev;
+    adev->smu_workload.submit_workload_status = 0;
+    adev->smu_workload.initialized = true;
why do we need this variable ?

Hi Shashank,

If any error comes while the device is booting then amdgpu will start unloading everything.
So I am using 'initialized' for unloading a driver successfully. This variable is to identify that the driver is loaded or not.

I am not sure if I am getting this right. This variable is only getting used in this patch here, just being set and reset.

How does this flag help us ? I guess if AMDGPU driver is getting unloaded we already know that we can't set power profile.

We are setting "initialized = true" and checking in amdgpu_workload_profile_fini() that 'initialized' is set or not set because
amdgpu_workload_profile_fini() is destroying mutex and same for delayed work which I have implemented in patch 0003.

In the below error case where amdgpu_workload_profile_init() was not called because psp firmware failed to load but amdgpu driver is
calling all unload function as well amdgpu_workload_profile_fini().

Ah, makes sense.

With the minor comments fixed below, please feel free to use:

Reviewed-by: Shashank Sharma <shashank.sharma@xxxxxxx>

- Shashank


ThankYou
~Arvind

- Shashank


This is the below error for which the amdgpu driver is unloading when it is not getting firmware.

[   12.421609] amdgpu 0000:08:00.0: Direct firmware load for amdgpu/renoir_ta.bin failed with error -2
[   12.421618] [drm:amdgpu_device_init [amdgpu]] *ERROR* early_init of IP block <psp> failed -19
[   12.428207] [drm] VCN decode is enabled in VM mode
[   12.428212] [drm] VCN encode is enabled in VM mode
[   12.430925] [drm] JPEG decode is enabled in VM mode
[   12.430931] amdgpu 0000:08:00.0: amdgpu: Fatal error during GPU init
[   12.431184] amdgpu 0000:08:00.0: amdgpu: amdgpu: finishing device.
[   12.431296] ------------[ cut here ]------------
[   12.431297] WARNING: CPU: 3 PID: 438 at kernel/workqueue.c:3379 __flush_work+0x22f/0x240
[   12.431305] Modules linked in: ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core amdgpu(OE+) snd_hwdep snd_pcm kvm snd_seq_midi snd_seq_midi_event drm_exec amdxcp snd_rawmidi iommu_v2 crct10dif_pclmul drm_buddy gpu_sched ghash_clmulni_intel sha512_ssse3 snd_seq drm_suballoc_helper aesni_intel drm_ttm_helper binfmt_misc crypto_simd snd_seq_device ttm cryptd snd_timer drm_display_helper input_leds rapl joydev cec wmi_bmof rc_core snd drm_kms_helper k10temp ccp soundcore mac_hid sch_fq_codel msr parport_pc ppdev lp parport ramoops reed_solomon drm pstore_blk pstore_zone efi_pstore ip_tables x_tables autofs4 hid_generic usbhid hid crc32_pclmul nvme igb ahci i2c_piix4 xhci_pci i2c_algo_bit nvme_core libahci xhci_pci_renesas dca video wmi
[   12.431360] CPU: 3 PID: 438 Comm: systemd-udevd Tainted: G        W  OE      6.5.0-rc2-custom #1
[   12.431362] Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS ELITE/X570 AORUS ELITE, BIOS F34 06/10/2021
[   12.431364] RIP: 0010:__flush_work+0x22f/0x240
[   12.431367] Code: 8b 43 30 48 8b 53 40 89 c1 e9 f9 fe ff ff 4c 89 f7 e8 45 0b db 00 e8 90 f5 08 00 45 31 ff e9 11 ff ff ff 0f 0b e9 0a ff ff ff <0f> 0b 45 31 ff e9 00 ff ff ff e8 02 a0 d9 00 66 90 90 90 90 90 90
[   12.431368] RSP: 0018:ffffb0668156f818 EFLAGS: 00010246
[   12.431370] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   12.431371] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff9cea492c7840
[   12.431372] RBP: ffffb0668156f890 R08: 0000000000000000 R09: ffffb0668156f7a0
[   12.431372] R10: 0000000000000001 R11: 0000000000000001 R12: ffff9cea492c7840
[   12.431373] R13: 0000000000000001 R14: ffff9cea43839940 R15: 0000000000000001
[   12.431374] FS:  00007fde83c18880(0000) GS:ffff9cf15e2c0000(0000) knlGS:0000000000000000
[   12.431375] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.431376] CR2: 00007f2648000010 CR3: 00000001059e2000 CR4: 0000000000350ee0
[   12.431377] Call Trace:
[   12.431379]  <TASK>
[   12.431384]  ? show_regs+0x68/0x70
[   12.431388]  ? __flush_work+0x22f/0x240
[   12.431389]  ? __warn+0x8f/0x150
[   12.431392]  ? __flush_work+0x22f/0x240
[   12.431394]  ? report_bug+0x1f5/0x200
[   12.431399]  ? handle_bug+0x46/0x80
[   12.431402]  ? exc_invalid_op+0x19/0x70
[   12.431404]  ? asm_exc_invalid_op+0x1b/0x20
[   12.431408]  ? __flush_work+0x22f/0x240
[   12.431410]  ? irq_work_queue+0x10/0x60
[   12.431414]  ? __wake_up_klogd.part.0+0x5a/0x80
[   12.431419]  __cancel_work_timer+0x124/0x1b0
[   12.431421]  ? _printk+0x58/0x80
[   12.431423]  cancel_delayed_work_sync+0x13/0x20
[   12.431427]  amdgpu_workload_profile_fini+0x25/0x40 [amdgpu]
[   12.431854]  amdgpu_device_fini_sw+0x33/0x550 [amdgpu]
[   12.432035]  amdgpu_driver_release_kms+0x16/0x30 [amdgpu]
[   12.432213]  drm_dev_release+0x28/0x50 [drm]
[   12.432256]  devm_drm_dev_init_release+0x38/0x60 [drm]
[   12.432278]  devm_action_release+0x15/0x20
[   12.432283]  release_nodes+0x40/0xc0
[   12.432285]  devres_release_all+0x9e/0xe0
[   12.432286]  device_unbind_cleanup+0x12/0x80
[   12.432289]  really_probe+0x116/0x3e0
[   12.432291]  __driver_probe_device+0x7e/0x170
[   12.432293]  driver_probe_device+0x23/0xa0
[   12.432295]  __driver_attach+0xc5/0x190
[   12.432297]  ? __pfx___driver_attach+0x10/0x10
[   12.432299]  bus_for_each_dev+0x7c/0xd0
[   12.432302]  driver_attach+0x1e/0x30
[   12.432304]  bus_add_driver+0x11c/0x220
[   12.432306]  driver_register+0x64/0x130
[   12.432309]  ? __pfx_amdgpu_init+0x10/0x10 [amdgpu]
[   12.432491]  __pci_register_driver+0x68/0x70
[   12.432494]  amdgpu_init+0x63/0xff0 [amdgpu]
[   12.432667]  do_one_initcall+0x48/0x310
[   12.432671]  ? kmalloc_trace+0x2a/0xa0
[   12.432675]  do_init_module+0x6a/0x260
[   12.432677]  load_module+0x1db3/0x2050
[   12.432681]  init_module_from_file+0x9c/0xe0
[   12.432682]  ? init_module_from_file+0x9c/0xe0
[   12.432685]  idempotent_init_module+0x179/0x230
[   12.432687]  __x64_sys_finit_module+0x5d/0xb0
[   12.432689]  do_syscall_64+0x3b/0x90
[   12.432691]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8

+
+    mutex_init(&adev->smu_workload.workload_lock);
+}
+
+void amdgpu_workload_profile_fini(struct amdgpu_device *adev)
+{
+    if (!adev->smu_workload.initialized)
+        return;
+
+    adev->smu_workload.submit_workload_status = 0;
+    adev->smu_workload.initialized = false;
+ mutex_destroy(&adev->smu_workload.workload_lock);
+}
diff --git a/drivers/gpu/drm/amd/include/amdgpu_workload.h b/drivers/gpu/drm/amd/include/amdgpu_workload.h
new file mode 100644
index 000000000000..5d0f068422d4
--- /dev/null
+++ b/drivers/gpu/drm/amd/include/amdgpu_workload.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright 2023 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _AMDGPU_WORKLOAD_H_
+#define _AMDGPU_WORKLOAD_H_
+
+struct amdgpu_smu_workload {
+    struct amdgpu_device    *adev;
+    struct mutex        workload_lock;
+    struct delayed_work    smu_delayed_work;

call it power_profile_work instead ? Looks good otherwise.

Noted.

Thank you

~Arvind

- Shashank

+    uint32_t submit_workload_status;
+    bool            initialized;
+    atomic_t power_profile_ref[PP_SMC_POWER_PROFILE_COUNT];
+};
+
+/* Workload mode names */
+static const char * const amdgpu_workload_mode_name[] = {
+    "Default",
+    "3D",
+    "Powersaving",
+    "Video",
+    "VR",
+    "Compute",
+    "Custom",
+    "Window3D"
+};
+
+void amdgpu_workload_profile_init(struct amdgpu_device *adev);
+
+void amdgpu_workload_profile_fini(struct amdgpu_device *adev);
+
+#endif