diff options
| author | Dave Airlie <airlied@redhat.com> | 2015-12-23 14:15:26 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2015-12-23 14:15:26 +1000 |
| commit | fd3e14ffbd9ec7593ba4dafc9452a91373a4df05 (patch) | |
| tree | 2db6625f712787514208f794ac62d24f415771a4 /drivers/gpu/drm/amd/include/amd_pcie_helpers.h | |
| parent | 9116199536878bb2fdd63d6064633d6e3f2cba22 (diff) | |
| parent | eafbbd9883d0121811a9388988b80476dc12b1bf (diff) | |
Merge branch 'drm-next-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-next
[airlied: fixup build problems on arm - added errno.h include]
* 'drm-next-4.5' of git://people.freedesktop.org/~agd5f/linux: (152 commits)
amd/powerplay: fix copy paste typo in hardwaremanager.c
amd/powerplay: disable powerplay by default initially
amd/powerplay: don't enable ucode fan control if vbios has no fan table
drm/amd/powerplay: show gpu load when print gpu performance for Cz. (v2)
drm/amd/powerplay: check whether need to enable thermal control. (v2)
drm/amd/powerplay: add point check to avoid NULL point hang.
drm/amdgpu/powerplay: Program a calculated value as Deep Sleep clock.
drm/amd/powerplay: Don't return an error if fan table is missing
drm/powerplay/hwmgr: log errors in tonga_hwmgr_backend_init
drm/powerplay: add debugging output to processpptables.c
drm/powerplay: add debugging output to tonga_processpptables.c
amd/powerplay: Add structures required to report configuration change
amd/powerplay: Fix get dal power level
amd\powerplay Implement get dal power level
drm/amd/powerplay: display gpu load when print performance for tonga.
drm/amdgpu/powerplay: enable sysfs and debugfs interfaces late
drm/amd/powerplay: move shared function of vi to hwmgr. (v2)
drm/amd/powerplay: check whether enable dpm in powerplay.
drm/amd/powerplay: fix bug that dpm funcs in debugfs/sysfs missing.
drm/amd/powerplay: fix boolreturn.cocci warnings
...
Diffstat (limited to 'drivers/gpu/drm/amd/include/amd_pcie_helpers.h')
| -rw-r--r-- | drivers/gpu/drm/amd/include/amd_pcie_helpers.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/amd_pcie_helpers.h b/drivers/gpu/drm/amd/include/amd_pcie_helpers.h new file mode 100644 index 000000000000..5725bf85eacc --- /dev/null +++ b/drivers/gpu/drm/amd/include/amd_pcie_helpers.h @@ -0,0 +1,141 @@ +/* + * Copyright 2015 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. + */ + +#ifndef __AMD_PCIE_HELPERS_H__ +#define __AMD_PCIE_HELPERS_H__ + +#include "amd_pcie.h" + +static inline bool is_pcie_gen3_supported(uint32_t pcie_link_speed_cap) +{ + if (pcie_link_speed_cap & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) + return true; + + return false; +} + +static inline bool is_pcie_gen2_supported(uint32_t pcie_link_speed_cap) +{ + if (pcie_link_speed_cap & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2) + return true; + + return false; +} + +/* Get the new PCIE speed given the ASIC PCIE Cap and the NewState's requested PCIE speed*/ +static inline uint16_t get_pcie_gen_support(uint32_t pcie_link_speed_cap, + uint16_t ns_pcie_gen) +{ + uint32_t asic_pcie_link_speed_cap = (pcie_link_speed_cap & + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_MASK); + uint32_t sys_pcie_link_speed_cap = (pcie_link_speed_cap & + CAIL_PCIE_LINK_SPEED_SUPPORT_MASK); + + switch (asic_pcie_link_speed_cap) { + case CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1: + return PP_PCIEGen1; + + case CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2: + return PP_PCIEGen2; + + case CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3: + return PP_PCIEGen3; + + default: + if (is_pcie_gen3_supported(sys_pcie_link_speed_cap) && + (ns_pcie_gen == PP_PCIEGen3)) { + return PP_PCIEGen3; + } else if (is_pcie_gen2_supported(sys_pcie_link_speed_cap) && + ((ns_pcie_gen == PP_PCIEGen3) || (ns_pcie_gen == PP_PCIEGen2))) { + return PP_PCIEGen2; + } + } + + return PP_PCIEGen1; +} + +static inline uint16_t get_pcie_lane_support(uint32_t pcie_lane_width_cap, + uint16_t ns_pcie_lanes) +{ + int i, j; + uint16_t new_pcie_lanes = ns_pcie_lanes; + uint16_t pcie_lanes[7] = {1, 2, 4, 8, 12, 16, 32}; + + switch (pcie_lane_width_cap) { + case 0: + printk(KERN_ERR "No valid PCIE lane width reported"); + break; + case CAIL_PCIE_LINK_WIDTH_SUPPORT_X1: + new_pcie_lanes = 1; + break; + case CAIL_PCIE_LINK_WIDTH_SUPPORT_X2: + new_pcie_lanes = 2; + break; + case CAIL_PCIE_LINK_WIDTH_SUPPORT_X4: + new_pcie_lanes = 4; + break; + case CAIL_PCIE_LINK_WIDTH_SUPPORT_X8: + new_pcie_lanes = 8; + break; + case CAIL_PCIE_LINK_WIDTH_SUPPORT_X12: + new_pcie_lanes = 12; + break; + case CAIL_PCIE_LINK_WIDTH_SUPPORT_X16: + new_pcie_lanes = 16; + break; + case CAIL_PCIE_LINK_WIDTH_SUPPORT_X32: + new_pcie_lanes = 32; + break; + default: + for (i = 0; i < 7; i++) { + if (ns_pcie_lanes == pcie_lanes[i]) { + if (pcie_lane_width_cap & (0x10000 << i)) { + break; + } else { + for (j = i - 1; j >= 0; j--) { + if (pcie_lane_width_cap & (0x10000 << j)) { + new_pcie_lanes = pcie_lanes[j]; + break; + } + } + + if (j < 0) { + for (j = i + 1; j < 7; j++) { + if (pcie_lane_width_cap & (0x10000 << j)) { + new_pcie_lanes = pcie_lanes[j]; + break; + } + } + if (j > 7) + printk(KERN_ERR "Cannot find a valid PCIE lane width!"); + } + } + break; + } + } + break; + } + + return new_pcie_lanes; +} + +#endif |