linux/drivers/gpu/drm/radeon/ci_smc.c

/*
 * Copyright 2011 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.
 *
 * Authors: Alex Deucher
 */

#include <linux/firmware.h>

#include "radeon.h"
#include "cikd.h"
#include "ppsmc.h"
#include "radeon_ucode.h"
#include "ci_dpm.h"

static int ci_set_smc_sram_address(struct radeon_device *rdev,
				   u32 smc_address, u32 limit)
{ … }

int ci_copy_bytes_to_smc(struct radeon_device *rdev,
			 u32 smc_start_address,
			 const u8 *src, u32 byte_count, u32 limit)
{ … }

void ci_start_smc(struct radeon_device *rdev)
{ … }

void ci_reset_smc(struct radeon_device *rdev)
{ … }

int ci_program_jump_on_start(struct radeon_device *rdev)
{ … }

void ci_stop_smc_clock(struct radeon_device *rdev)
{ … }

void ci_start_smc_clock(struct radeon_device *rdev)
{ … }

bool ci_is_smc_running(struct radeon_device *rdev)
{ … }

#if 0
PPSMC_Result ci_wait_for_smc_inactive(struct radeon_device *rdev)
{
	u32 tmp;
	int i;

	if (!ci_is_smc_running(rdev))
		return PPSMC_Result_OK;

	for (i = 0; i < rdev->usec_timeout; i++) {
		tmp = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);
		if ((tmp & CKEN) == 0)
			break;
		udelay(1);
	}

	return PPSMC_Result_OK;
}
#endif

int ci_load_smc_ucode(struct radeon_device *rdev, u32 limit)
{ … }

int ci_read_smc_sram_dword(struct radeon_device *rdev,
			   u32 smc_address, u32 *value, u32 limit)
{ … }

int ci_write_smc_sram_dword(struct radeon_device *rdev,
			    u32 smc_address, u32 value, u32 limit)
{ … }