drm/amd/pm: optimize the power related source code layout

The target is to provide a clear entry point(for power routines).
Also this can help to maintain a clear view about the frameworks
used on different ASICs. Hopefully all these can make power part
more friendly to play with.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 288 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu12/smu_v12_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu12/smu_v12_0.c
new file mode 100644
index 000000000000..660f403d5770
--- /dev/null
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu12/smu_v12_0.c
@@ -0,0 +1,288 @@
+/*
+ * Copyright 2019 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.
+ */
+
+#define SWSMU_CODE_LAYER_L3
+
+#include <linux/firmware.h>
+#include "amdgpu.h"
+#include "amdgpu_smu.h"
+#include "atomfirmware.h"
+#include "amdgpu_atomfirmware.h"
+#include "smu_v12_0.h"
+#include "soc15_common.h"
+#include "atom.h"
+#include "smu_cmn.h"
+
+#include "asic_reg/mp/mp_12_0_0_offset.h"
+#include "asic_reg/mp/mp_12_0_0_sh_mask.h"
+#include "asic_reg/smuio/smuio_12_0_0_offset.h"
+#include "asic_reg/smuio/smuio_12_0_0_sh_mask.h"
+
+/*
+ * DO NOT use these for err/warn/info/debug messages.
+ * Use dev_err, dev_warn, dev_info and dev_dbg instead.
+ * They are more MGPU friendly.
+ */
+#undef pr_err
+#undef pr_warn
+#undef pr_info
+#undef pr_debug
+
+// because some SMU12 based ASICs use older ip offset tables
+// we should undefine this register from the smuio12 header
+// to prevent confusion down the road
+#undef mmPWR_MISC_CNTL_STATUS
+
+#define smnMP1_FIRMWARE_FLAGS                                0x3010024
+
+int smu_v12_0_check_fw_status(struct smu_context *smu)
+{
+	struct amdgpu_device *adev = smu->adev;
+	uint32_t mp1_fw_flags;
+
+	mp1_fw_flags = RREG32_PCIE(MP1_Public |
+		(smnMP1_FIRMWARE_FLAGS & 0xffffffff));
+
+	if ((mp1_fw_flags & MP1_FIRMWARE_FLAGS__INTERRUPTS_ENABLED_MASK) >>
+		MP1_FIRMWARE_FLAGS__INTERRUPTS_ENABLED__SHIFT)
+		return 0;
+
+	return -EIO;
+}
+
+int smu_v12_0_check_fw_version(struct smu_context *smu)
+{
+	uint32_t if_version = 0xff, smu_version = 0xff;
+	uint16_t smu_major;
+	uint8_t smu_minor, smu_debug;
+	int ret = 0;
+
+	ret = smu_cmn_get_smc_version(smu, &if_version, &smu_version);
+	if (ret)
+		return ret;
+
+	smu_major = (smu_version >> 16) & 0xffff;
+	smu_minor = (smu_version >> 8) & 0xff;
+	smu_debug = (smu_version >> 0) & 0xff;
+
+	/*
+	 * 1. if_version mismatch is not critical as our fw is designed
+	 * to be backward compatible.
+	 * 2. New fw usually brings some optimizations. But that's visible
+	 * only on the paired driver.
+	 * Considering above, we just leave user a warning message instead
+	 * of halt driver loading.
+	 */
+	if (if_version != smu->smc_driver_if_version) {
+		dev_info(smu->adev->dev, "smu driver if version = 0x%08x, smu fw if version = 0x%08x, "
+			"smu fw version = 0x%08x (%d.%d.%d)\n",
+			smu->smc_driver_if_version, if_version,
+			smu_version, smu_major, smu_minor, smu_debug);
+		dev_warn(smu->adev->dev, "SMU driver if version not matched\n");
+	}
+
+	return ret;
+}
+
+int smu_v12_0_powergate_sdma(struct smu_context *smu, bool gate)
+{
+	if (!smu->is_apu)
+		return 0;
+
+	if (gate)
+		return smu_cmn_send_smc_msg(smu, SMU_MSG_PowerDownSdma, NULL);
+	else
+		return smu_cmn_send_smc_msg(smu, SMU_MSG_PowerUpSdma, NULL);
+}
+
+int smu_v12_0_set_gfx_cgpg(struct smu_context *smu, bool enable)
+{
+	if (!(smu->adev->pg_flags & AMD_PG_SUPPORT_GFX_PG))
+		return 0;
+
+	return smu_cmn_send_smc_msg_with_param(smu,
+		SMU_MSG_SetGfxCGPG,
+		enable ? 1 : 0,
+		NULL);
+}
+
+/**
+ * smu_v12_0_get_gfxoff_status - get gfxoff status
+ *
+ * @smu: amdgpu_device pointer
+ *
+ * This function will be used to get gfxoff status
+ *
+ * Returns 0=GFXOFF(default).
+ * Returns 1=Transition out of GFX State.
+ * Returns 2=Not in GFXOFF.
+ * Returns 3=Transition into GFXOFF.
+ */
+uint32_t smu_v12_0_get_gfxoff_status(struct smu_context *smu)
+{
+	uint32_t reg;
+	uint32_t gfxOff_Status = 0;
+	struct amdgpu_device *adev = smu->adev;
+
+	reg = RREG32_SOC15(SMUIO, 0, mmSMUIO_GFX_MISC_CNTL);
+	gfxOff_Status = (reg & SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS_MASK)
+		>> SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS__SHIFT;
+
+	return gfxOff_Status;
+}
+
+int smu_v12_0_gfx_off_control(struct smu_context *smu, bool enable)
+{
+	int ret = 0, timeout = 500;
+
+	if (enable) {
+		ret = smu_cmn_send_smc_msg(smu, SMU_MSG_AllowGfxOff, NULL);
+
+	} else {
+		ret = smu_cmn_send_smc_msg(smu, SMU_MSG_DisallowGfxOff, NULL);
+
+		/* confirm gfx is back to "on" state, timeout is 0.5 second */
+		while (!(smu_v12_0_get_gfxoff_status(smu) == 2)) {
+			msleep(1);
+			timeout--;
+			if (timeout == 0) {
+				DRM_ERROR("disable gfxoff timeout and failed!\n");
+				break;
+			}
+		}
+	}
+
+	return ret;
+}
+
+int smu_v12_0_fini_smc_tables(struct smu_context *smu)
+{
+	struct smu_table_context *smu_table = &smu->smu_table;
+
+	kfree(smu_table->clocks_table);
+	smu_table->clocks_table = NULL;
+
+	kfree(smu_table->metrics_table);
+	smu_table->metrics_table = NULL;
+
+	kfree(smu_table->watermarks_table);
+	smu_table->watermarks_table = NULL;
+
+	return 0;
+}
+
+int smu_v12_0_set_default_dpm_tables(struct smu_context *smu)
+{
+	struct smu_table_context *smu_table = &smu->smu_table;
+
+	return smu_cmn_update_table(smu, SMU_TABLE_DPMCLOCKS, 0, smu_table->clocks_table, false);
+}
+
+int smu_v12_0_mode2_reset(struct smu_context *smu){
+	return smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_GfxDeviceDriverReset, SMU_RESET_MODE_2, NULL);
+}
+
+int smu_v12_0_set_soft_freq_limited_range(struct smu_context *smu, enum smu_clk_type clk_type,
+			    uint32_t min, uint32_t max)
+{
+	int ret = 0;
+
+	if (!smu_cmn_clk_dpm_is_enabled(smu, clk_type))
+		return 0;
+
+	switch (clk_type) {
+	case SMU_GFXCLK:
+	case SMU_SCLK:
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetHardMinGfxClk, min, NULL);
+		if (ret)
+			return ret;
+
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetSoftMaxGfxClk, max, NULL);
+		if (ret)
+			return ret;
+	break;
+	case SMU_FCLK:
+	case SMU_MCLK:
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetHardMinFclkByFreq, min, NULL);
+		if (ret)
+			return ret;
+
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetSoftMaxFclkByFreq, max, NULL);
+		if (ret)
+			return ret;
+	break;
+	case SMU_SOCCLK:
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetHardMinSocclkByFreq, min, NULL);
+		if (ret)
+			return ret;
+
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetSoftMaxSocclkByFreq, max, NULL);
+		if (ret)
+			return ret;
+	break;
+	case SMU_VCLK:
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetHardMinVcn, min, NULL);
+		if (ret)
+			return ret;
+
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetSoftMaxVcn, max, NULL);
+		if (ret)
+			return ret;
+	break;
+	default:
+		return -EINVAL;
+	}
+
+	return ret;
+}
+
+int smu_v12_0_set_driver_table_location(struct smu_context *smu)
+{
+	struct smu_table *driver_table = &smu->smu_table.driver_table;
+	int ret = 0;
+
+	if (driver_table->mc_address) {
+		ret = smu_cmn_send_smc_msg_with_param(smu,
+				SMU_MSG_SetDriverDramAddrHigh,
+				upper_32_bits(driver_table->mc_address),
+				NULL);
+		if (!ret)
+			ret = smu_cmn_send_smc_msg_with_param(smu,
+				SMU_MSG_SetDriverDramAddrLow,
+				lower_32_bits(driver_table->mc_address),
+				NULL);
+	}
+
+	return ret;
+}
+
+void smu_v12_0_init_gpu_metrics_v2_0(struct gpu_metrics_v2_0 *gpu_metrics)
+{
+	memset(gpu_metrics, 0xFF, sizeof(struct gpu_metrics_v2_0));
+
+	gpu_metrics->common_header.structure_size =
+				sizeof(struct gpu_metrics_v2_0);
+	gpu_metrics->common_header.format_revision = 2;
+	gpu_metrics->common_header.content_revision = 0;
+
+	gpu_metrics->system_clock_counter = ktime_get_boottime_ns();
+}