[linux-2.6-block.git] / drivers / gpu / drm / radeon / trinity_smc.c

/*
 * Copyright 2012 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 "drmP.h"
#include "radeon.h"
#include "trinityd.h"
#include "trinity_dpm.h"
#include "ppsmc.h"

static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
{
	int i;
	u32 v = 0;

	WREG32(SMC_MESSAGE_0, id);
	for (i = 0; i < rdev->usec_timeout; i++) {
		if (RREG32(SMC_RESP_0) != 0)
			break;
		udelay(1);
	}
	v = RREG32(SMC_RESP_0);

	if (v != 1) {
		if (v == 0xFF) {
			DRM_ERROR("SMC failed to handle the message!\n");
			return -EINVAL;
		} else if (v == 0xFE) {
			DRM_ERROR("Unknown SMC message!\n");
			return -EINVAL;
		}
	}

	return 0;
}

int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
{
	if (enable)
		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM);
	else
		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
}

int trinity_dpm_config(struct radeon_device *rdev, bool enable)
{
	if (enable)
		WREG32_SMC(SMU_SCRATCH0, 1);
	else
		WREG32_SMC(SMU_SCRATCH0, 0);

	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
}

int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
{
	WREG32_SMC(SMU_SCRATCH0, n);

	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
}

int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
{
	WREG32_SMC(SMU_SCRATCH0, n);

	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
}

int trinity_uvd_dpm_config(struct radeon_device *rdev)
{
	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
}

int trinity_dpm_no_forced_level(struct radeon_device *rdev)
{
	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
}

int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
					  bool enable)
{
	if (enable)
		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
	else
		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
}

int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
{
	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
}

void trinity_acquire_mutex(struct radeon_device *rdev)
{
	int i;

	WREG32(SMC_INT_REQ, 1);
	for (i = 0; i < rdev->usec_timeout; i++) {
		if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
			break;
		udelay(1);
	}
}

void trinity_release_mutex(struct radeon_device *rdev)
{
	WREG32(SMC_INT_REQ, 0);
}
Commit	Line	Data
d70229f7 AD	1	/*
	2	* Copyright 2012 Advanced Micro Devices, Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	*/
	23
	24	#include "drmP.h"
	25	#include "radeon.h"
	26	#include "trinityd.h"
	27	#include "trinity_dpm.h"
	28	#include "ppsmc.h"
	29
d70229f7 AD	30	static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
	31	{
	32	int i;
	33	u32 v = 0;
	34
	35	WREG32(SMC_MESSAGE_0, id);
	36	for (i = 0; i < rdev->usec_timeout; i++) {
	37	if (RREG32(SMC_RESP_0) != 0)
	38	break;
	39	udelay(1);
	40	}
	41	v = RREG32(SMC_RESP_0);
	42
	43	if (v != 1) {
	44	if (v == 0xFF) {
	45	DRM_ERROR("SMC failed to handle the message!\n");
	46	return -EINVAL;
	47	} else if (v == 0xFE) {
	48	DRM_ERROR("Unknown SMC message!\n");
	49	return -EINVAL;
	50	}
	51	}
	52
	53	return 0;
	54	}
	55
ef4e0365 AD	56	int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
	57	{
	58	if (enable)
	59	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM);
	60	else
	61	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
	62	}
	63
d70229f7 AD	64	int trinity_dpm_config(struct radeon_device *rdev, bool enable)
	65	{
	66	if (enable)
	67	WREG32_SMC(SMU_SCRATCH0, 1);
	68	else
	69	WREG32_SMC(SMU_SCRATCH0, 0);
	70
	71	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
	72	}
	73
	74	int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
	75	{
	76	WREG32_SMC(SMU_SCRATCH0, n);
	77
	78	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
	79	}
	80
9b5de596 AD	81	int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
	82	{
	83	WREG32_SMC(SMU_SCRATCH0, n);
	84
	85	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
	86	}
	87
0c4aaeae AD	88	int trinity_uvd_dpm_config(struct radeon_device *rdev)
	89	{
	90	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
	91	}
	92
d70229f7 AD	93	int trinity_dpm_no_forced_level(struct radeon_device *rdev)
	94	{
	95	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
	96	}
	97
	98	int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
	99	bool enable)
	100	{
	101	if (enable)
	102	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
	103	else
	104	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
	105	}
	106
	107	int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
	108	{
	109	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
	110	}
	111
	112	void trinity_acquire_mutex(struct radeon_device *rdev)
	113	{
	114	int i;
	115
	116	WREG32(SMC_INT_REQ, 1);
	117	for (i = 0; i < rdev->usec_timeout; i++) {
	118	if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
	119	break;
	120	udelay(1);
	121	}
	122	}
	123
	124	void trinity_release_mutex(struct radeon_device *rdev)
	125	{
	126	WREG32(SMC_INT_REQ, 0);
	127	}