diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-05 10:17:26 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-05 10:17:26 -0700 |
commit | a09e9a7a4b907f2dfa9bdb2b98a1828ab4b340b2 (patch) | |
tree | c7a2df4e887573648eeaf8f7939889046990d3f6 /drivers/gpu/drm/radeon/ci_smc.c | |
parent | 9ab073bc45b8b523cc39658925bb44bef35ca657 (diff) | |
parent | 86a7e1224a68511d3a1ae0b7e11581b9d37723ae (diff) |
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm tree changes from Dave Airlie:
"This is the main drm pull request, I have some overlap with sound and
arm-soc, the sound patch is acked and may conflict based on -next
reports but should be a trivial fixup, which I'll leave to you!
Highlights:
- new drivers:
MSM driver from Rob Clark
- non-drm:
switcheroo and hdmi audio driver support for secondary GPU
poweroff, so drivers can use runtime PM to poweroff the GPUs. This
can save 5 or 6W on some optimus laptops.
- drm core:
combined GEM and TTM VMA manager
per-filp mmap permission tracking
initial rendernode support (via a runtime enable for now, until we get api stable),
remove old proc support,
lots of cleanups of legacy code
hdmi vendor infoframes and 4k modes
lots of gem/prime locking and races fixes
async pageflip scaffolding
drm bridge objects
- i915:
Haswell PC8+ support and eLLC support, HDMI 4K support, initial
per-process VMA pieces, watermark reworks, convert to generic hdmi
infoframes, encoder reworking, fastboot support,
- radeon:
CIK PM support, remove 3d blit code in favour of DMA engines,
Berlin GPU support, HDMI audio fixes
- nouveau:
secondary GPU power down support for optimus laptops, lots of
fixes, use MSI, VP3 engine support
- exynos:
runtime pm support for g2d, DT support, remove non-DT,
- tda998x i2c driver:
lots of fixes for sync issues
- gma500:
lots of cleanups
- rcar:
add LVDS support, fbdev emulation,
- tegra:
just minor fixes"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (684 commits)
drm/exynos: Fix build error with exynos_drm_connector.c
drm/exynos: Remove non-DT support in exynos_drm_fimd
drm/exynos: Remove non-DT support in exynos_hdmi
drm/exynos: Remove non-DT support in exynos_drm_g2d
drm/exynos: Remove non-DT support in exynos_hdmiphy
drm/exynos: Remove non-DT support in exynos_ddc
drm/exynos: Make Exynos DRM drivers depend on OF
drm/exynos: Consider fallback option to allocation fail
drm/exynos: fimd: move platform data parsing to separate function
drm/exynos: fimd: get signal polarities from device tree
drm/exynos: fimd: replace struct fb_videomode with videomode
drm/exynos: check a pixel format to a particular window layer
drm/exynos: fix fimd pixel format setting
drm/exynos: Add NULL pointer check
drm/exynos: Remove redundant error messages
drm/exynos: Add missing of.h header include
drm/exynos: Remove redundant NULL check in exynos_drm_buf
drm/exynos: add device tree support for rotator
drm/exynos: Add missing includes
drm/exynos: add runtime pm interfaces to g2d driver
...
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 00000000000..53b43dd3cf1 --- /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; +} |