drm/amdgpu: add helpers for hdp ras init/fini

hdp ras init/fini are common functions that
can be shared among hdp generations

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: John Clements <John.Clements@amd.com>
Reviewed-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index ee85e8a..418e674 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -56,7 +56,7 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
        amdgpu_gmc.o amdgpu_mmhub.o amdgpu_xgmi.o amdgpu_csa.o amdgpu_ras.o amdgpu_vm_cpu.o \
        amdgpu_vm_sdma.o amdgpu_discovery.o amdgpu_ras_eeprom.o amdgpu_nbio.o \
        amdgpu_umc.o smu_v11_0_i2c.o amdgpu_fru_eeprom.o amdgpu_rap.o \
-       amdgpu_fw_attestation.o amdgpu_securedisplay.o
+       amdgpu_fw_attestation.o amdgpu_securedisplay.o amdgpu_hdp.o
 
 amdgpu-$(CONFIG_PERF_EVENTS) += amdgpu_pmu.o
 

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_hdp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_hdp.c
new file mode 100644 (file)
index 0000000..1d50d53
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_hdp.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2021 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"
+#include "amdgpu_ras.h"
+
+int amdgpu_hdp_ras_late_init(struct amdgpu_device *adev)
+{
+       int r;
+       struct ras_ih_if ih_info = {
+               .cb = NULL,
+       };
+       struct ras_fs_if fs_info = {
+               .sysfs_name = "hdp_err_count",
+       };
+
+       if (!adev->hdp.ras_if) {
+               adev->hdp.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
+               if (!adev->hdp.ras_if)
+                       return -ENOMEM;
+               adev->hdp.ras_if->block = AMDGPU_RAS_BLOCK__HDP;
+               adev->hdp.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
+               adev->hdp.ras_if->sub_block_index = 0;
+               strcpy(adev->hdp.ras_if->name, "hdp");
+       }
+       ih_info.head = fs_info.head = *adev->hdp.ras_if;
+       r = amdgpu_ras_late_init(adev, adev->hdp.ras_if,
+                                &fs_info, &ih_info);
+       if (r || !amdgpu_ras_is_supported(adev, adev->hdp.ras_if->block)) {
+               kfree(adev->hdp.ras_if);
+               adev->hdp.ras_if = NULL;
+       }
+
+       return r;
+}
+
+void amdgpu_hdp_ras_fini(struct amdgpu_device *adev)
+{
+       if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__HDP) &&
+           adev->hdp.ras_if) {
+               struct ras_common_if *ras_if = adev->hdp.ras_if;
+               struct ras_ih_if ih_info = {
+                       .cb = NULL,
+               };
+
+               amdgpu_ras_late_fini(adev, ras_if, &ih_info);
+               kfree(ras_if);
+       }
+}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_hdp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_hdp.h
index c89cf8d..ba6f272 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_hdp.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_hdp.h
@@ -47,4 +47,6 @@ struct amdgpu_hdp {
        const struct amdgpu_hdp_ras_funcs       *ras_funcs;
 };
 
+int amdgpu_hdp_ras_late_init(struct amdgpu_device *adev);
+void amdgpu_hdp_ras_fini(struct amdgpu_device *adev);
 #endif /* __AMDGPU_HDP_H__ */