Subversion Repositories Kolibri OS

/*

 * 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 

#include "drmP.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)

{

	if (smc_address & 3)

		return -EINVAL;

	if ((smc_address + 3) > limit)

		return -EINVAL;

	WREG32(SMC_IND_INDEX_0, smc_address);

	WREG32_P(SMC_IND_ACCESS_CNTL, 0, ~AUTO_INCREMENT_IND_0);

	return 0;

}

int ci_copy_bytes_to_smc(struct radeon_device *rdev,

			 u32 smc_start_address,

			 const u8 *src, u32 byte_count, u32 limit)

{

	unsigned long flags;

	u32 data, original_data;

	u32 addr;

	u32 extra_shift;

	int ret = 0;

	if (smc_start_address & 3)

		return -EINVAL;

	if ((smc_start_address + byte_count) > limit)

		return -EINVAL;

	addr = smc_start_address;

	spin_lock_irqsave(&rdev->smc_idx_lock, flags);

	while (byte_count >= 4) {

		/* SMC address space is BE */

		data = (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];

		ret = ci_set_smc_sram_address(rdev, addr, limit);

		if (ret)

			goto done;

		WREG32(SMC_IND_DATA_0, data);

		src += 4;

		byte_count -= 4;

		addr += 4;

	}

	/* RMW for the final bytes */

	if (byte_count > 0) {

		data = 0;

		ret = ci_set_smc_sram_address(rdev, addr, limit);

		if (ret)

			goto done;

		original_data = RREG32(SMC_IND_DATA_0);

		extra_shift = 8 * (4 - byte_count);

		while (byte_count > 0) {

			data = (data << 8) + *src++;

			byte_count--;

		}

		data <<= extra_shift;

		data |= (original_data & ~((~0UL) << extra_shift));

		ret = ci_set_smc_sram_address(rdev, addr, limit);

		if (ret)

			goto done;

		WREG32(SMC_IND_DATA_0, data);

	}

done:

	spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);

	return ret;

}

void ci_start_smc(struct radeon_device *rdev)

{

	u32 tmp = RREG32_SMC(SMC_SYSCON_RESET_CNTL);

	tmp &= ~RST_REG;

	WREG32_SMC(SMC_SYSCON_RESET_CNTL, tmp);

}

void ci_reset_smc(struct radeon_device *rdev)

{

	u32 tmp = RREG32_SMC(SMC_SYSCON_RESET_CNTL);

	tmp |= RST_REG;

	WREG32_SMC(SMC_SYSCON_RESET_CNTL, tmp);

}

int ci_program_jump_on_start(struct radeon_device *rdev)

{

	static const u8 data[] = { 0xE0, 0x00, 0x80, 0x40 };

	return ci_copy_bytes_to_smc(rdev, 0x0, data, 4, sizeof(data)+1);

}

void ci_stop_smc_clock(struct radeon_device *rdev)

{

	u32 tmp = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);

	tmp |= CK_DISABLE;

	WREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0, tmp);

}

void ci_start_smc_clock(struct radeon_device *rdev)

{

	u32 tmp = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);

	tmp &= ~CK_DISABLE;

	WREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0, tmp);

}

bool ci_is_smc_running(struct radeon_device *rdev)

{

	u32 clk = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);

	u32 pc_c = RREG32_SMC(SMC_PC_C);

	if (!(clk & CK_DISABLE) && (0x20100 <= pc_c))

		return true;

	return false;

}

PPSMC_Result ci_send_msg_to_smc(struct radeon_device *rdev, PPSMC_Msg msg)

{

	u32 tmp;

	int i;

	if (!ci_is_smc_running(rdev))

		return PPSMC_Result_Failed;

	WREG32(SMC_MESSAGE_0, msg);

	for (i = 0; i < rdev->usec_timeout; i++) {

		tmp = RREG32(SMC_RESP_0);

		if (tmp != 0)

			break;

		udelay(1);

	}

	tmp = RREG32(SMC_RESP_0);

	return (PPSMC_Result)tmp;

}

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;

}

int ci_load_smc_ucode(struct radeon_device *rdev, u32 limit)

{

	unsigned long flags;

	u32 ucode_start_address;

	u32 ucode_size;

	const u8 *src;

	u32 data;

	if (!rdev->smc_fw)

		return -EINVAL;

	if (rdev->new_fw) {

		const struct smc_firmware_header_v1_0 *hdr =

			(const struct smc_firmware_header_v1_0 *)rdev->smc_fw->data;

		radeon_ucode_print_smc_hdr(&hdr->header);

		ucode_start_address = le32_to_cpu(hdr->ucode_start_addr);

		ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes);

		src = (const u8 *)

			(rdev->smc_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));

	} else {

		switch (rdev->family) {

		case CHIP_BONAIRE:

			ucode_start_address = BONAIRE_SMC_UCODE_START;

			ucode_size = BONAIRE_SMC_UCODE_SIZE;

			break;

		case CHIP_HAWAII:

			ucode_start_address = HAWAII_SMC_UCODE_START;

			ucode_size = HAWAII_SMC_UCODE_SIZE;

			break;

		default:

			DRM_ERROR("unknown asic in smc ucode loader\n");

			BUG();

		}

		src = (const u8 *)rdev->smc_fw->data;

	}

	if (ucode_size & 3)

		return -EINVAL;

	spin_lock_irqsave(&rdev->smc_idx_lock, flags);

	WREG32(SMC_IND_INDEX_0, ucode_start_address);

	WREG32_P(SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_0, ~AUTO_INCREMENT_IND_0);

	while (ucode_size >= 4) {

		/* SMC address space is BE */

		data = (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];

		WREG32(SMC_IND_DATA_0, data);

		src += 4;

		ucode_size -= 4;

	}

	WREG32_P(SMC_IND_ACCESS_CNTL, 0, ~AUTO_INCREMENT_IND_0);

	spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);

	return 0;

}

int ci_read_smc_sram_dword(struct radeon_device *rdev,

			   u32 smc_address, u32 *value, u32 limit)

{

	unsigned long flags;

	int ret;

	spin_lock_irqsave(&rdev->smc_idx_lock, flags);

	ret = ci_set_smc_sram_address(rdev, smc_address, limit);

	if (ret == 0)

		*value = RREG32(SMC_IND_DATA_0);

	spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);

	return ret;

}

int ci_write_smc_sram_dword(struct radeon_device *rdev,

			    u32 smc_address, u32 value, u32 limit)

{

	unsigned long flags;

	int ret;

	spin_lock_irqsave(&rdev->smc_idx_lock, flags);

	ret = ci_set_smc_sram_address(rdev, smc_address, limit);

	if (ret == 0)

		WREG32(SMC_IND_DATA_0, value);

	spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);

	return ret;

}