linux-stable/drivers/gpu/drm/radeon/ci_smc.c
Jérome Glisse 3cf8bb1ad1 drm/radeon: fix indentation.
I hate doing this but it hurts my eyes to go over code that does not
comply with indentation rules. Only thing that is not only space change
is in atom.c all other files are space indentation issues.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-03-16 18:08:06 -04:00

295 lines
6.7 KiB
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 "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;
}
#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)
{
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;
}