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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f08e2035cc
GuC WOPCM registers are write-once registers. Current driver code accesses these registers without checking the accessibility to these registers which will lead to unpredictable driver behaviors if these registers were touch by other components (such as faulty BIOS code). This patch moves the GuC WOPCM registers updating code into intel_wopcm.c and adds check before and after the update to GuC WOPCM registers so that we can make sure the driver is in a known state after writing to these write-once registers. v6: - Made sure module reloading won't bug the kernel while doing locking status checking v7: - Fixed patch format issues v8: - Fixed coding style issue on register lock bit macro definition (Sagar) v9: - Avoided to use redundant !! to cast uint to bool (Chris) - Return error code instead of GEM_BUG_ON for locked with invalid register values case (Sagar) - Updated guc_wopcm_hw_init to use guc_wopcm as first parameter (Michal) - Added code to set and validate the HuC_LOADING_AGENT_GUC bit in GuC WOPCM offset register based on the presence of HuC firmware (Michal) - Use bit fields instead of macros for GuC WOPCM flags (Michal) v10: - Refined variable names, removed redundant comments (Joonas) - Introduced lockable_reg to handle the write once register write and propagate the write error to caller (Joonas) - Used lockable_reg abstraction to avoid locking bit check on generic i915_reg_t (Michal) - Added log message for error paths (Michal) - Removed hw_updated flag and only relies on real hardware status v11: - Replaced lockable_reg with simplified function (Michal) - Used new macros for locking bits of WOPCM size/offset registers instead of using BIT(0) directly (Michal) - use intel_wopcm_init_hw() called from intel_gem_init_hw() to do GuC WOPCM register setup instead of calling from intel_uc_init_hw() (Michal) v12: - Updated function kernel-doc to align with code changes (Michal) - Updated code to use wopcm pointer directly (Michal) v13: - Updated the ordering of s-o-b/cc/r-b tags (Sagar) BSpec: 10875, 10833 Signed-off-by: Jackie Li <yaodong.li@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com> (v11) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (v12) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1520987574-19351-5-git-send-email-yaodong.li@intel.com
119 lines
4.5 KiB
C
119 lines
4.5 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef _INTEL_GUC_REG_H_
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#define _INTEL_GUC_REG_H_
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/* Definitions of GuC H/W registers, bits, etc */
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#define GUC_STATUS _MMIO(0xc000)
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#define GS_RESET_SHIFT 0
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#define GS_MIA_IN_RESET (0x01 << GS_RESET_SHIFT)
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#define GS_BOOTROM_SHIFT 1
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#define GS_BOOTROM_MASK (0x7F << GS_BOOTROM_SHIFT)
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#define GS_BOOTROM_RSA_FAILED (0x50 << GS_BOOTROM_SHIFT)
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#define GS_BOOTROM_JUMP_PASSED (0x76 << GS_BOOTROM_SHIFT)
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#define GS_UKERNEL_SHIFT 8
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#define GS_UKERNEL_MASK (0xFF << GS_UKERNEL_SHIFT)
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#define GS_UKERNEL_LAPIC_DONE (0x30 << GS_UKERNEL_SHIFT)
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#define GS_UKERNEL_DPC_ERROR (0x60 << GS_UKERNEL_SHIFT)
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#define GS_UKERNEL_READY (0xF0 << GS_UKERNEL_SHIFT)
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#define GS_MIA_SHIFT 16
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#define GS_MIA_MASK (0x07 << GS_MIA_SHIFT)
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#define GS_MIA_CORE_STATE (0x01 << GS_MIA_SHIFT)
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#define GS_MIA_HALT_REQUESTED (0x02 << GS_MIA_SHIFT)
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#define GS_MIA_ISR_ENTRY (0x04 << GS_MIA_SHIFT)
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#define GS_AUTH_STATUS_SHIFT 30
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#define GS_AUTH_STATUS_MASK (0x03 << GS_AUTH_STATUS_SHIFT)
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#define GS_AUTH_STATUS_BAD (0x01 << GS_AUTH_STATUS_SHIFT)
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#define GS_AUTH_STATUS_GOOD (0x02 << GS_AUTH_STATUS_SHIFT)
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#define SOFT_SCRATCH(n) _MMIO(0xc180 + (n) * 4)
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#define SOFT_SCRATCH_COUNT 16
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#define UOS_RSA_SCRATCH(i) _MMIO(0xc200 + (i) * 4)
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#define UOS_RSA_SCRATCH_COUNT 64
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#define DMA_ADDR_0_LOW _MMIO(0xc300)
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#define DMA_ADDR_0_HIGH _MMIO(0xc304)
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#define DMA_ADDR_1_LOW _MMIO(0xc308)
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#define DMA_ADDR_1_HIGH _MMIO(0xc30c)
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#define DMA_ADDRESS_SPACE_WOPCM (7 << 16)
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#define DMA_ADDRESS_SPACE_GTT (8 << 16)
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#define DMA_COPY_SIZE _MMIO(0xc310)
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#define DMA_CTRL _MMIO(0xc314)
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#define HUC_UKERNEL (1<<9)
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#define UOS_MOVE (1<<4)
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#define START_DMA (1<<0)
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#define DMA_GUC_WOPCM_OFFSET _MMIO(0xc340)
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#define GUC_WOPCM_OFFSET_VALID (1<<0)
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#define HUC_LOADING_AGENT_VCR (0<<1)
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#define HUC_LOADING_AGENT_GUC (1<<1)
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#define GUC_WOPCM_OFFSET_SHIFT 14
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#define GUC_WOPCM_OFFSET_MASK (0x3ffff << GUC_WOPCM_OFFSET_SHIFT)
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#define GUC_MAX_IDLE_COUNT _MMIO(0xC3E4)
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#define HUC_STATUS2 _MMIO(0xD3B0)
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#define HUC_FW_VERIFIED (1<<7)
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#define GUC_WOPCM_SIZE _MMIO(0xc050)
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#define GUC_WOPCM_SIZE_LOCKED (1<<0)
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#define GUC_WOPCM_SIZE_SHIFT 12
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#define GUC_WOPCM_SIZE_MASK (0xfffff << GUC_WOPCM_SIZE_SHIFT)
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#define GEN8_GT_PM_CONFIG _MMIO(0x138140)
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#define GEN9LP_GT_PM_CONFIG _MMIO(0x138140)
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#define GEN9_GT_PM_CONFIG _MMIO(0x13816c)
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#define GT_DOORBELL_ENABLE (1<<0)
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#define GEN8_GTCR _MMIO(0x4274)
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#define GEN8_GTCR_INVALIDATE (1<<0)
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#define GUC_ARAT_C6DIS _MMIO(0xA178)
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#define GUC_SHIM_CONTROL _MMIO(0xc064)
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#define GUC_DISABLE_SRAM_INIT_TO_ZEROES (1<<0)
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#define GUC_ENABLE_READ_CACHE_LOGIC (1<<1)
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#define GUC_ENABLE_MIA_CACHING (1<<2)
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#define GUC_GEN10_MSGCH_ENABLE (1<<4)
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#define GUC_ENABLE_READ_CACHE_FOR_SRAM_DATA (1<<9)
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#define GUC_ENABLE_READ_CACHE_FOR_WOPCM_DATA (1<<10)
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#define GUC_ENABLE_MIA_CLOCK_GATING (1<<15)
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#define GUC_GEN10_SHIM_WC_ENABLE (1<<21)
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#define GUC_SEND_INTERRUPT _MMIO(0xc4c8)
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#define GUC_SEND_TRIGGER (1<<0)
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#define GEN8_DRBREGL(x) _MMIO(0x1000 + (x) * 8)
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#define GEN8_DRB_VALID (1<<0)
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#define GEN8_DRBREGU(x) _MMIO(0x1000 + (x) * 8 + 4)
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#define DE_GUCRMR _MMIO(0x44054)
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#define GUC_BCS_RCS_IER _MMIO(0xC550)
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#define GUC_VCS2_VCS1_IER _MMIO(0xC554)
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#define GUC_WD_VECS_IER _MMIO(0xC558)
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#define GUC_PM_P24C_IER _MMIO(0xC55C)
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#endif
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