1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/smuio_v14_0_2.c b/drivers/gpu/drm/amd/amdgpu/smuio_v14_0_2.c
new file mode 100644
index 000000000000..2a51a70d4846
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/smuio_v14_0_2.c
@@ -0,0 +1,62 @@
+/*
+ * 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"
+#include "smuio_v14_0_2.h"
+#include "smuio/smuio_14_0_2_offset.h"
+#include "smuio/smuio_14_0_2_sh_mask.h"
+#include <linux/preempt.h>
+
+static u32 smuio_v14_0_2_get_rom_index_offset(struct amdgpu_device *adev)
+{
+	return SOC15_REG_OFFSET(SMUIO, 0, regROM_INDEX);
+}
+
+static u32 smuio_v14_0_2_get_rom_data_offset(struct amdgpu_device *adev)
+{
+	return SOC15_REG_OFFSET(SMUIO, 0, regROM_DATA);
+}
+
+static u64 smuio_v14_0_2_get_gpu_clock_counter(struct amdgpu_device *adev)
+{
+	u64 clock;
+	u64 clock_counter_lo, clock_counter_hi_pre, clock_counter_hi_after;
+
+	preempt_disable();
+	clock_counter_hi_pre = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_UPPER);
+	clock_counter_lo = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_LOWER);
+	/* the clock counter may be udpated during polling the counters */
+	clock_counter_hi_after = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_UPPER);
+	if (clock_counter_hi_pre != clock_counter_hi_after)
+		clock_counter_lo = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_LOWER);
+	preempt_enable();
+
+	clock = clock_counter_lo | (clock_counter_hi_after << 32ULL);
+
+	return clock;
+}
+
+const struct amdgpu_smuio_funcs smuio_v14_0_2_funcs = {
+	.get_rom_index_offset = smuio_v14_0_2_get_rom_index_offset,
+	.get_rom_data_offset = smuio_v14_0_2_get_rom_data_offset,
+	.get_gpu_clock_counter = smuio_v14_0_2_get_gpu_clock_counter,
+};