cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c

/*
 * Copyright 2014 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.
 *
 */

#include "kfd_device_queue_manager.h"
#include "gca/gfx_8_0_enum.h"
#include "gca/gfx_8_0_sh_mask.h"
#include "gca/gfx_8_0_enum.h"
#include "oss/oss_3_0_sh_mask.h"

static bool set_cache_memory_policy_vi(struct device_queue_manager *dqm,
				   struct qcm_process_device *qpd,
				   enum cache_policy default_policy,
				   enum cache_policy alternate_policy,
				   void __user *alternate_aperture_base,
				   uint64_t alternate_aperture_size);
static int register_process_vi(struct device_queue_manager *dqm,
					struct qcm_process_device *qpd);
static int initialize_cpsch_vi(struct device_queue_manager *dqm);
static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q,
				struct qcm_process_device *qpd);


void device_queue_manager_init_vi(struct device_queue_manager_asic_ops *ops) { ops->set_cache_memory_policy = set_cache_memory_policy_vi; ops->register_process = register_process_vi; ops->initialize = initialize_cpsch_vi; ops->init_sdma_vm = init_sdma_vm; }

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static uint32_t compute_sh_mem_bases_64bit(unsigned int top_address_nybble) { /* In 64-bit mode, we can only control the top 3 bits of the LDS, * scratch and GPUVM apertures. * The hardware fills in the remaining 59 bits according to the * following pattern: * LDS: X0000000'00000000 - X0000001'00000000 (4GB) * Scratch: X0000001'00000000 - X0000002'00000000 (4GB) * GPUVM: Y0010000'00000000 - Y0020000'00000000 (1TB) * * (where X/Y is the configurable nybble with the low-bit 0) * * LDS and scratch will have the same top nybble programmed in the * top 3 bits of SH_MEM_BASES.PRIVATE_BASE. * GPUVM can have a different top nybble programmed in the * top 3 bits of SH_MEM_BASES.SHARED_BASE. * We don't bother to support different top nybbles * for LDS/Scratch and GPUVM. */ BUG_ON((top_address_nybble & 1) || top_address_nybble > 0xE || top_address_nybble == 0); return top_address_nybble << 12 | (top_address_nybble << 12) << SH_MEM_BASES__SHARED_BASE__SHIFT; }

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static bool set_cache_memory_policy_vi(struct device_queue_manager *dqm, struct qcm_process_device *qpd, enum cache_policy default_policy, enum cache_policy alternate_policy, void __user *alternate_aperture_base, uint64_t alternate_aperture_size) { uint32_t default_mtype; uint32_t ape1_mtype; default_mtype = (default_policy == cache_policy_coherent) ? MTYPE_CC : MTYPE_NC; ape1_mtype = (alternate_policy == cache_policy_coherent) ? MTYPE_CC : MTYPE_NC; qpd->sh_mem_config = (qpd->sh_mem_config & SH_MEM_CONFIG__ADDRESS_MODE_MASK) | SH_MEM_ALIGNMENT_MODE_UNALIGNED << SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT | default_mtype << SH_MEM_CONFIG__DEFAULT_MTYPE__SHIFT | ape1_mtype << SH_MEM_CONFIG__APE1_MTYPE__SHIFT | SH_MEM_CONFIG__PRIVATE_ATC_MASK; return true; }

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static int register_process_vi(struct device_queue_manager *dqm, struct qcm_process_device *qpd) { struct kfd_process_device *pdd; unsigned int temp; BUG_ON(!dqm || !qpd); pdd = qpd_to_pdd(qpd); /* check if sh_mem_config register already configured */ if (qpd->sh_mem_config == 0) { qpd->sh_mem_config = SH_MEM_ALIGNMENT_MODE_UNALIGNED << SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT | MTYPE_CC << SH_MEM_CONFIG__DEFAULT_MTYPE__SHIFT | MTYPE_CC << SH_MEM_CONFIG__APE1_MTYPE__SHIFT | SH_MEM_CONFIG__PRIVATE_ATC_MASK; qpd->sh_mem_ape1_limit = 0; qpd->sh_mem_ape1_base = 0; } if (qpd->pqm->process->is_32bit_user_mode) { temp = get_sh_mem_bases_32(pdd); qpd->sh_mem_bases = temp << SH_MEM_BASES__SHARED_BASE__SHIFT; qpd->sh_mem_config |= SH_MEM_ADDRESS_MODE_HSA32 << SH_MEM_CONFIG__ADDRESS_MODE__SHIFT; } else { temp = get_sh_mem_bases_nybble_64(pdd); qpd->sh_mem_bases = compute_sh_mem_bases_64bit(temp); qpd->sh_mem_config |= SH_MEM_ADDRESS_MODE_HSA64 << SH_MEM_CONFIG__ADDRESS_MODE__SHIFT; } pr_debug("kfd: is32bit process: %d sh_mem_bases nybble: 0x%X and register 0x%X\n", qpd->pqm->process->is_32bit_user_mode, temp, qpd->sh_mem_bases); return 0; }

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static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q, struct qcm_process_device *qpd) { uint32_t value = (1 << SDMA0_RLC0_VIRTUAL_ADDR__ATC__SHIFT); if (q->process->is_32bit_user_mode) value |= (1 << SDMA0_RLC0_VIRTUAL_ADDR__PTR32__SHIFT) | get_sh_mem_bases_32(qpd_to_pdd(qpd)); else value |= ((get_sh_mem_bases_nybble_64(qpd_to_pdd(qpd))) << SDMA0_RLC0_VIRTUAL_ADDR__SHARED_BASE__SHIFT) & SDMA0_RLC0_VIRTUAL_ADDR__SHARED_BASE_MASK; q->properties.sdma_vm_addr = value; }

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static int initialize_cpsch_vi(struct device_queue_manager *dqm) { return 0; }

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