diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/ci_smc.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/ci_smc.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ci_smc.c b/drivers/gpu/drm/radeon/ci_smc.c new file mode 100644 index 000000000000..53b43dd3cf1e --- /dev/null +++ b/drivers/gpu/drm/radeon/ci_smc.c @@ -0,0 +1,262 @@ +/* + * 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" + +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) +{ + u32 data, original_data; + u32 addr; + u32 extra_shift; + int ret; + + if (smc_start_address & 3) + return -EINVAL; + if ((smc_start_address + byte_count) > limit) + return -EINVAL; + + addr = smc_start_address; + + 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) + return ret; + + 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) + return ret; + + 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) + return ret; + + WREG32(SMC_IND_DATA_0, data); + } + return 0; +} + +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 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) +{ + u32 ucode_start_address; + u32 ucode_size; + const u8 *src; + u32 data; + + if (!rdev->smc_fw) + return -EINVAL; + + switch (rdev->family) { + case CHIP_BONAIRE: + ucode_start_address = BONAIRE_SMC_UCODE_START; + ucode_size = BONAIRE_SMC_UCODE_SIZE; + break; + default: + DRM_ERROR("unknown asic in smc ucode loader\n"); + BUG(); + } + + if (ucode_size & 3) + return -EINVAL; + + src = (const u8 *)rdev->smc_fw->data; + 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); + + return 0; +} + +int ci_read_smc_sram_dword(struct radeon_device *rdev, + u32 smc_address, u32 *value, u32 limit) +{ + int ret; + + ret = ci_set_smc_sram_address(rdev, smc_address, limit); + if (ret) + return ret; + + *value = RREG32(SMC_IND_DATA_0); + return 0; +} + +int ci_write_smc_sram_dword(struct radeon_device *rdev, + u32 smc_address, u32 value, u32 limit) +{ + int ret; + + ret = ci_set_smc_sram_address(rdev, smc_address, limit); + if (ret) + return ret; + + WREG32(SMC_IND_DATA_0, value); + return 0; +} |
