/*
 * Copyright 2021 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 <linux/firmware.h>
#include <linux/pci.h>
#include "amdgpu.h"
#include "amdgpu_atomfirmware.h"
#include "gmc_v11_0.h"
#include "umc_v8_7.h"
#include "athub/athub_3_0_0_sh_mask.h"
#include "athub/athub_3_0_0_offset.h"
#include "oss/osssys_6_0_0_offset.h"
#include "ivsrcid/vmc/irqsrcs_vmc_1_0.h"
#include "navi10_enum.h"
#include "soc15.h"
#include "soc15d.h"
#include "soc15_common.h"
#include "nbio_v4_3.h"
#include "gfxhub_v3_0.h"
#include "mmhub_v3_0.h"
#include "mmhub_v3_0_2.h"
#include "athub_v3_0.h"


static int gmc_v11_0_ecc_interrupt_state(struct amdgpu_device *adev,
                                         struct amdgpu_irq_src *src,
                                         unsigned type,
                                         enum amdgpu_interrupt_state state)
{
        return 0;
}

static int
gmc_v11_0_vm_fault_interrupt_state(struct amdgpu_device *adev,
                                   struct amdgpu_irq_src *src, unsigned type,
                                   enum amdgpu_interrupt_state state)
{
        switch (state) {
        case AMDGPU_IRQ_STATE_DISABLE:
                /* MM HUB */
                amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_MMHUB_0, false);
                /* GFX HUB */
                amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_GFXHUB_0, false);
                break;
        case AMDGPU_IRQ_STATE_ENABLE:
                /* MM HUB */
                amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_MMHUB_0, true);
                /* GFX HUB */
                amdgpu_gmc_set_vm_fault_masks(adev, AMDGPU_GFXHUB_0, true);
                break;
        default:
                break;
        }

        return 0;
}

static int gmc_v11_0_process_interrupt(struct amdgpu_device *adev,
                                       struct amdgpu_irq_src *source,
                                       struct amdgpu_iv_entry *entry)
{
        struct amdgpu_vmhub *hub = &adev->vmhub[entry->vmid_src];
        uint32_t status = 0;
        u64 addr;

        addr = (u64)entry->src_data[0] << 12;
        addr |= ((u64)entry->src_data[1] & 0xf) << 44;

        if (!amdgpu_sriov_vf(adev)) {
                /*
                 * Issue a dummy read to wait for the status register to
                 * be updated to avoid reading an incorrect value due to
                 * the new fast GRBM interface.
                 */
                if (entry->vmid_src == AMDGPU_GFXHUB_0)
                        RREG32(hub->vm_l2_pro_fault_status);

                status = RREG32(hub->vm_l2_pro_fault_status);
                WREG32_P(hub->vm_l2_pro_fault_cntl, 1, ~1);
        }

        if (printk_ratelimit()) {
                struct amdgpu_task_info task_info;

                memset(&task_info, 0, sizeof(struct amdgpu_task_info));
                amdgpu_vm_get_task_info(adev, entry->pasid, &task_info);

                dev_err(adev->dev,
                        "[%s] page fault (src_id:%u ring:%u vmid:%u pasid:%u, "
                        "for process %s pid %d thread %s pid %d)\n",
                        entry->vmid_src ? "mmhub" : "gfxhub",
                        entry->src_id, entry->ring_id, entry->vmid,
                        entry->pasid, task_info.process_name, task_info.tgid,
                        task_info.task_name, task_info.pid);
                dev_err(adev->dev, "  in page starting at address 0x%016llx from client %d\n",
                        addr, entry->client_id);
                if (!amdgpu_sriov_vf(adev))
                        hub->vmhub_funcs->print_l2_protection_fault_status(adev, status);
        }

        return 0;
}

static const struct amdgpu_irq_src_funcs gmc_v11_0_irq_funcs = {
        .set = gmc_v11_0_vm_fault_interrupt_state,
        .process = gmc_v11_0_process_interrupt,
};

static const struct amdgpu_irq_src_funcs gmc_v11_0_ecc_funcs = {
        .set = gmc_v11_0_ecc_interrupt_state,
        .process = amdgpu_umc_process_ecc_irq,
};

static void gmc_v11_0_set_irq_funcs(struct amdgpu_device *adev)
{
        adev->gmc.vm_fault.num_types = 1;
        adev->gmc.vm_fault.funcs = &gmc_v11_0_irq_funcs;

        if (!amdgpu_sriov_vf(adev)) {
                adev->gmc.ecc_irq.num_types = 1;
                adev->gmc.ecc_irq.funcs = &gmc_v11_0_ecc_funcs;
        }
}

/**
 * gmc_v11_0_use_invalidate_semaphore - judge whether to use semaphore
 *
 * @adev: amdgpu_device pointer
 * @vmhub: vmhub type
 *
 */
static bool gmc_v11_0_use_invalidate_semaphore(struct amdgpu_device *adev,
                                       uint32_t vmhub)
{
        return ((vmhub == AMDGPU_MMHUB_0) &&
                (!amdgpu_sriov_vf(adev)));
}

static bool gmc_v11_0_get_vmid_pasid_mapping_info(
                                        struct amdgpu_device *adev,
                                        uint8_t vmid, uint16_t *p_pasid)
{
        *p_pasid = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, regIH_VMID_0_LUT) + vmid) & 0xffff;

        return !!(*p_pasid);
}

/*
 * GART
 * VMID 0 is the physical GPU addresses as used by the kernel.
 * VMIDs 1-15 are used for userspace clients and are handled
 * by the amdgpu vm/hsa code.
 */

static void gmc_v11_0_flush_vm_hub(struct amdgpu_device *adev, uint32_t vmid,
                                   unsigned int vmhub, uint32_t flush_type)
{
        bool use_semaphore = gmc_v11_0_use_invalidate_semaphore(adev, vmhub);
        struct amdgpu_vmhub *hub = &adev->vmhub[vmhub];
        u32 inv_req = hub->vmhub_funcs->get_invalidate_req(vmid, flush_type);
        u32 tmp;
        /* Use register 17 for GART */
        const unsigned eng = 17;
        unsigned int i;

        spin_lock(&adev->gmc.invalidate_lock);
        /*
         * It may lose gpuvm invalidate acknowldege state across power-gating
         * off cycle, add semaphore acquire before invalidation and semaphore
         * release after invalidation to avoid entering power gated state
         * to WA the Issue
         */

        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
        if (use_semaphore) {
                for (i = 0; i < adev->usec_timeout; i++) {
                        /* a read return value of 1 means semaphore acuqire */
                        tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_sem +
                                            hub->eng_distance * eng);
                        if (tmp & 0x1)
                                break;
                        udelay(1);
                }

                if (i >= adev->usec_timeout)
                        DRM_ERROR("Timeout waiting for sem acquire in VM flush!\n");
        }

        WREG32_NO_KIQ(hub->vm_inv_eng0_req + hub->eng_distance * eng, inv_req);

        /* Wait for ACK with a delay.*/
        for (i = 0; i < adev->usec_timeout; i++) {
                tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_ack +
                                    hub->eng_distance * eng);
                tmp &= 1 << vmid;
                if (tmp)
                        break;

                udelay(1);
        }

        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
        if (use_semaphore)
                /*
                 * add semaphore release after invalidation,
                 * write with 0 means semaphore release
                 */
                WREG32_NO_KIQ(hub->vm_inv_eng0_sem +
                              hub->eng_distance * eng, 0);

        /* Issue additional private vm invalidation to MMHUB */
        if ((vmhub != AMDGPU_GFXHUB_0) &&
            (hub->vm_l2_bank_select_reserved_cid2)) {
                inv_req = RREG32_NO_KIQ(hub->vm_l2_bank_select_reserved_cid2);
                /* bit 25: RSERVED_CACHE_PRIVATE_INVALIDATION */
                inv_req |= (1 << 25);
                /* Issue private invalidation */
                WREG32_NO_KIQ(hub->vm_l2_bank_select_reserved_cid2, inv_req);
                /* Read back to ensure invalidation is done*/
                RREG32_NO_KIQ(hub->vm_l2_bank_select_reserved_cid2);
        }

        spin_unlock(&adev->gmc.invalidate_lock);

        if (i < adev->usec_timeout)
                return;

        DRM_ERROR("Timeout waiting for VM flush ACK!\n");
}

/**
 * gmc_v11_0_flush_gpu_tlb - gart tlb flush callback
 *
 * @adev: amdgpu_device pointer
 * @vmid: vm instance to flush
 *
 * Flush the TLB for the requested page table.
 */
static void gmc_v11_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
                                        uint32_t vmhub, uint32_t flush_type)
{
        if ((vmhub == AMDGPU_GFXHUB_0) && !adev->gfx.is_poweron)
                return;

        /* flush hdp cache */
        adev->hdp.funcs->flush_hdp(adev, NULL);

        /* For SRIOV run time, driver shouldn't access the register through MMIO
         * Directly use kiq to do the vm invalidation instead
         */
        if (adev->gfx.kiq.ring.sched.ready && !adev->enable_mes &&
            (amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev))) {
                struct amdgpu_vmhub *hub = &adev->vmhub[vmhub];
                const unsigned eng = 17;
                u32 inv_req = hub->vmhub_funcs->get_invalidate_req(vmid, flush_type);
                u32 req = hub->vm_inv_eng0_req + hub->eng_distance * eng;
                u32 ack = hub->vm_inv_eng0_ack + hub->eng_distance * eng;

                amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, inv_req,
                                1 << vmid);
                return;
        }

        mutex_lock(&adev->mman.gtt_window_lock);
        gmc_v11_0_flush_vm_hub(adev, vmid, vmhub, 0);
        mutex_unlock(&adev->mman.gtt_window_lock);
        return;
}

/**
 * gmc_v11_0_flush_gpu_tlb_pasid - tlb flush via pasid
 *
 * @adev: amdgpu_device pointer
 * @pasid: pasid to be flush
 *
 * Flush the TLB for the requested pasid.
 */
static int gmc_v11_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
                                        uint16_t pasid, uint32_t flush_type,
                                        bool all_hub)
{
        int vmid, i;
        signed long r;
        uint32_t seq;
        uint16_t queried_pasid;
        bool ret;
        struct amdgpu_ring *ring = &adev->gfx.kiq.ring;
        struct amdgpu_kiq *kiq = &adev->gfx.kiq;

        if (amdgpu_emu_mode == 0 && ring->sched.ready) {
                spin_lock(&adev->gfx.kiq.ring_lock);
                /* 2 dwords flush + 8 dwords fence */
                amdgpu_ring_alloc(ring, kiq->pmf->invalidate_tlbs_size + 8);
                kiq->pmf->kiq_invalidate_tlbs(ring,
                                        pasid, flush_type, all_hub);
                r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
                if (r) {
                        amdgpu_ring_undo(ring);
                        spin_unlock(&adev->gfx.kiq.ring_lock);
                        return -ETIME;
                }

                amdgpu_ring_commit(ring);
                spin_unlock(&adev->gfx.kiq.ring_lock);
                r = amdgpu_fence_wait_polling(ring, seq, adev->usec_timeout);
                if (r < 1) {
                        dev_err(adev->dev, "wait for kiq fence error: %ld.\n", r);
                        return -ETIME;
                }

                return 0;
        }

        for (vmid = 1; vmid < 16; vmid++) {

                ret = gmc_v11_0_get_vmid_pasid_mapping_info(adev, vmid,
                                &queried_pasid);
                if (ret && queried_pasid == pasid) {
                        if (all_hub) {
                                for (i = 0; i < adev->num_vmhubs; i++)
                                        gmc_v11_0_flush_gpu_tlb(adev, vmid,
                                                        i, flush_type);
                        } else {
                                gmc_v11_0_flush_gpu_tlb(adev, vmid,
                                                AMDGPU_GFXHUB_0, flush_type);
                        }
                        break;
                }
        }

        return 0;
}

static uint64_t gmc_v11_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
                                             unsigned vmid, uint64_t pd_addr)
{
        bool use_semaphore = gmc_v11_0_use_invalidate_semaphore(ring->adev, ring->funcs->vmhub);
        struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
        uint32_t req = hub->vmhub_funcs->get_invalidate_req(vmid, 0);
        unsigned eng = ring->vm_inv_eng;

        /*
         * It may lose gpuvm invalidate acknowldege state across power-gating
         * off cycle, add semaphore acquire before invalidation and semaphore
         * release after invalidation to avoid entering power gated state
         * to WA the Issue
         */

        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
        if (use_semaphore)
                /* a read return value of 1 means semaphore acuqire */
                amdgpu_ring_emit_reg_wait(ring,
                                          hub->vm_inv_eng0_sem +
                                          hub->eng_distance * eng, 0x1, 0x1);

        amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_lo32 +
                              (hub->ctx_addr_distance * vmid),
                              lower_32_bits(pd_addr));

        amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_hi32 +
                              (hub->ctx_addr_distance * vmid),
                              upper_32_bits(pd_addr));

        amdgpu_ring_emit_reg_write_reg_wait(ring, hub->vm_inv_eng0_req +
                                            hub->eng_distance * eng,
                                            hub->vm_inv_eng0_ack +
                                            hub->eng_distance * eng,
                                            req, 1 << vmid);

        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
        if (use_semaphore)
                /*
                 * add semaphore release after invalidation,
                 * write with 0 means semaphore release
                 */
                amdgpu_ring_emit_wreg(ring, hub->vm_inv_eng0_sem +
                                      hub->eng_distance * eng, 0);

        return pd_addr;
}

static void gmc_v11_0_emit_pasid_mapping(struct amdgpu_ring *ring, unsigned vmid,
                                         unsigned pasid)
{
        struct amdgpu_device *adev = ring->adev;
        uint32_t reg;

        /* MES fw manages IH_VMID_x_LUT updating */
        if (ring->is_mes_queue)
                return;

        if (ring->funcs->vmhub == AMDGPU_GFXHUB_0)
                reg = SOC15_REG_OFFSET(OSSSYS, 0, regIH_VMID_0_LUT) + vmid;
        else
                reg = SOC15_REG_OFFSET(OSSSYS, 0, regIH_VMID_0_LUT_MM) + vmid;

        amdgpu_ring_emit_wreg(ring, reg, pasid);
}

/*
 * PTE format:
 * 63:59 reserved
 * 58:57 reserved
 * 56 F
 * 55 L
 * 54 reserved
 * 53:52 SW
 * 51 T
 * 50:48 mtype
 * 47:12 4k physical page base address
 * 11:7 fragment
 * 6 write
 * 5 read
 * 4 exe
 * 3 Z
 * 2 snooped
 * 1 system
 * 0 valid
 *
 * PDE format:
 * 63:59 block fragment size
 * 58:55 reserved
 * 54 P
 * 53:48 reserved
 * 47:6 physical base address of PD or PTE
 * 5:3 reserved
 * 2 C
 * 1 system
 * 0 valid
 */

static uint64_t gmc_v11_0_map_mtype(struct amdgpu_device *adev, uint32_t flags)
{
        switch (flags) {
        case AMDGPU_VM_MTYPE_DEFAULT:
                return AMDGPU_PTE_MTYPE_NV10(MTYPE_NC);
        case AMDGPU_VM_MTYPE_NC:
                return AMDGPU_PTE_MTYPE_NV10(MTYPE_NC);
        case AMDGPU_VM_MTYPE_WC:
                return AMDGPU_PTE_MTYPE_NV10(MTYPE_WC);
        case AMDGPU_VM_MTYPE_CC:
                return AMDGPU_PTE_MTYPE_NV10(MTYPE_CC);
        case AMDGPU_VM_MTYPE_UC:
                return AMDGPU_PTE_MTYPE_NV10(MTYPE_UC);
        default:
                return AMDGPU_PTE_MTYPE_NV10(MTYPE_NC);
        }
}

static void gmc_v11_0_get_vm_pde(struct amdgpu_device *adev, int level,
                                 uint64_t *addr, uint64_t *flags)
{
        if (!(*flags & AMDGPU_PDE_PTE) && !(*flags & AMDGPU_PTE_SYSTEM))
                *addr = adev->vm_manager.vram_base_offset + *addr -
                        adev->gmc.vram_start;
        BUG_ON(*addr & 0xFFFF00000000003FULL);

        if (!adev->gmc.translate_further)
                return;

        if (level == AMDGPU_VM_PDB1) {
                /* Set the block fragment size */
                if (!(*flags & AMDGPU_PDE_PTE))
                        *flags |= AMDGPU_PDE_BFS(0x9);

        } else if (level == AMDGPU_VM_PDB0) {
                if (*flags & AMDGPU_PDE_PTE)
                        *flags &= ~AMDGPU_PDE_PTE;
                else
                        *flags |= AMDGPU_PTE_TF;
        }
}

static void gmc_v11_0_get_vm_pte(struct amdgpu_device *adev,
                                 struct amdgpu_bo_va_mapping *mapping,
                                 uint64_t *flags)
{
        *flags &= ~AMDGPU_PTE_EXECUTABLE;
        *flags |= mapping->flags & AMDGPU_PTE_EXECUTABLE;

        *flags &= ~AMDGPU_PTE_MTYPE_NV10_MASK;
        *flags |= (mapping->flags & AMDGPU_PTE_MTYPE_NV10_MASK);

        *flags &= ~AMDGPU_PTE_NOALLOC;
        *flags |= (mapping->flags & AMDGPU_PTE_NOALLOC);

        if (mapping->flags & AMDGPU_PTE_PRT) {
                *flags |= AMDGPU_PTE_PRT;
                *flags |= AMDGPU_PTE_SNOOPED;
                *flags |= AMDGPU_PTE_LOG;
                *flags |= AMDGPU_PTE_SYSTEM;
                *flags &= ~AMDGPU_PTE_VALID;
        }
}

static unsigned gmc_v11_0_get_vbios_fb_size(struct amdgpu_device *adev)
{
        return 0;
}

static const struct amdgpu_gmc_funcs gmc_v11_0_gmc_funcs = {
        .flush_gpu_tlb = gmc_v11_0_flush_gpu_tlb,
        .flush_gpu_tlb_pasid = gmc_v11_0_flush_gpu_tlb_pasid,
        .emit_flush_gpu_tlb = gmc_v11_0_emit_flush_gpu_tlb,
        .emit_pasid_mapping = gmc_v11_0_emit_pasid_mapping,
        .map_mtype = gmc_v11_0_map_mtype,
        .get_vm_pde = gmc_v11_0_get_vm_pde,
        .get_vm_pte = gmc_v11_0_get_vm_pte,
        .get_vbios_fb_size = gmc_v11_0_get_vbios_fb_size,
};

static void gmc_v11_0_set_gmc_funcs(struct amdgpu_device *adev)
{
        adev->gmc.gmc_funcs = &gmc_v11_0_gmc_funcs;
}

static void gmc_v11_0_set_umc_funcs(struct amdgpu_device *adev)
{
        switch (adev->ip_versions[UMC_HWIP][0]) {
        case IP_VERSION(8, 10, 0):
        case IP_VERSION(8, 11, 0):
                break;
        default:
                break;
        }
}


static void gmc_v11_0_set_mmhub_funcs(struct amdgpu_device *adev)
{
        switch (adev->ip_versions[MMHUB_HWIP][0]) {
        case IP_VERSION(3, 0, 2):
                adev->mmhub.funcs = &mmhub_v3_0_2_funcs;
                break;
        default:
                adev->mmhub.funcs = &mmhub_v3_0_funcs;
                break;
        }
}

static void gmc_v11_0_set_gfxhub_funcs(struct amdgpu_device *adev)
{
        adev->gfxhub.funcs = &gfxhub_v3_0_funcs;
}

static int gmc_v11_0_early_init(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        gmc_v11_0_set_gfxhub_funcs(adev);
        gmc_v11_0_set_mmhub_funcs(adev);
        gmc_v11_0_set_gmc_funcs(adev);
        gmc_v11_0_set_irq_funcs(adev);
        gmc_v11_0_set_umc_funcs(adev);

        adev->gmc.shared_aperture_start = 0x2000000000000000ULL;
        adev->gmc.shared_aperture_end =
                adev->gmc.shared_aperture_start + (4ULL << 30) - 1;
        adev->gmc.private_aperture_start = 0x1000000000000000ULL;
        adev->gmc.private_aperture_end =
                adev->gmc.private_aperture_start + (4ULL << 30) - 1;

        return 0;
}

static int gmc_v11_0_late_init(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        int r;

        r = amdgpu_gmc_allocate_vm_inv_eng(adev);
        if (r)
                return r;

        r = amdgpu_gmc_ras_late_init(adev);
        if (r)
                return r;

        return amdgpu_irq_get(adev, &adev->gmc.vm_fault, 0);
}

static void gmc_v11_0_vram_gtt_location(struct amdgpu_device *adev,
                                        struct amdgpu_gmc *mc)
{
        u64 base = 0;

        base = adev->mmhub.funcs->get_fb_location(adev);

        amdgpu_gmc_vram_location(adev, &adev->gmc, base);
        amdgpu_gmc_gart_location(adev, mc);

        /* base offset of vram pages */
        adev->vm_manager.vram_base_offset = adev->mmhub.funcs->get_mc_fb_offset(adev);
}

/**
 * gmc_v11_0_mc_init - initialize the memory controller driver params
 *
 * @adev: amdgpu_device pointer
 *
 * Look up the amount of vram, vram width, and decide how to place
 * vram and gart within the GPU's physical address space.
 * Returns 0 for success.
 */
static int gmc_v11_0_mc_init(struct amdgpu_device *adev)
{
        int r;

        /* size in MB on si */
        adev->gmc.mc_vram_size =
                adev->nbio.funcs->get_memsize(adev) * 1024ULL * 1024ULL;
        adev->gmc.real_vram_size = adev->gmc.mc_vram_size;

        if (!(adev->flags & AMD_IS_APU)) {
                r = amdgpu_device_resize_fb_bar(adev);
                if (r)
                        return r;
        }
        adev->gmc.aper_base = pci_resource_start(adev->pdev, 0);
        adev->gmc.aper_size = pci_resource_len(adev->pdev, 0);

#ifdef CONFIG_X86_64
        if ((adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev)) {
                adev->gmc.aper_base = adev->mmhub.funcs->get_mc_fb_offset(adev);
                adev->gmc.aper_size = adev->gmc.real_vram_size;
        }
#endif
        /* In case the PCI BAR is larger than the actual amount of vram */
        adev->gmc.visible_vram_size = adev->gmc.aper_size;
        if (adev->gmc.visible_vram_size > adev->gmc.real_vram_size)
                adev->gmc.visible_vram_size = adev->gmc.real_vram_size;

        /* set the gart size */
        if (amdgpu_gart_size == -1) {
                adev->gmc.gart_size = 512ULL << 20;
        } else
                adev->gmc.gart_size = (u64)amdgpu_gart_size << 20;

        gmc_v11_0_vram_gtt_location(adev, &adev->gmc);

        return 0;
}

static int gmc_v11_0_gart_init(struct amdgpu_device *adev)
{
        int r;

        if (adev->gart.bo) {
                WARN(1, "PCIE GART already initialized\n");
                return 0;
        }

        /* Initialize common gart structure */
        r = amdgpu_gart_init(adev);
        if (r)
                return r;

        adev->gart.table_size = adev->gart.num_gpu_pages * 8;
        adev->gart.gart_pte_flags = AMDGPU_PTE_MTYPE_NV10(MTYPE_UC) |
                                 AMDGPU_PTE_EXECUTABLE;

        return amdgpu_gart_table_vram_alloc(adev);
}

static int gmc_v11_0_sw_init(void *handle)
{
        int r, vram_width = 0, vram_type = 0, vram_vendor = 0;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        adev->mmhub.funcs->init(adev);

        spin_lock_init(&adev->gmc.invalidate_lock);

        r = amdgpu_atomfirmware_get_vram_info(adev,
                                              &vram_width, &vram_type, &vram_vendor);
        adev->gmc.vram_width = vram_width;

        adev->gmc.vram_type = vram_type;
        adev->gmc.vram_vendor = vram_vendor;

        switch (adev->ip_versions[GC_HWIP][0]) {
        case IP_VERSION(11, 0, 0):
        case IP_VERSION(11, 0, 1):
        case IP_VERSION(11, 0, 2):
                adev->num_vmhubs = 2;
                /*
                 * To fulfill 4-level page support,
                 * vm size is 256TB (48bit), maximum size,
                 * block size 512 (9bit)
                 */
                amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
                break;
        default:
                break;
        }

        /* This interrupt is VMC page fault.*/
        r = amdgpu_irq_add_id(adev, SOC21_IH_CLIENTID_VMC,
                              VMC_1_0__SRCID__VM_FAULT,
                              &adev->gmc.vm_fault);

        if (r)
                return r;

        r = amdgpu_irq_add_id(adev, SOC21_IH_CLIENTID_GFX,
                              UTCL2_1_0__SRCID__FAULT,
                              &adev->gmc.vm_fault);
        if (r)
                return r;

        if (!amdgpu_sriov_vf(adev)) {
                /* interrupt sent to DF. */
                r = amdgpu_irq_add_id(adev, SOC21_IH_CLIENTID_DF, 0,
                                      &adev->gmc.ecc_irq);
                if (r)
                        return r;
        }

        /*
         * Set the internal MC address mask This is the max address of the GPU's
         * internal address space.
         */
        adev->gmc.mc_mask = 0xffffffffffffULL; /* 48 bit MC */

        r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44));
        if (r) {
                printk(KERN_WARNING "amdgpu: No suitable DMA available.\n");
                return r;
        }

        r = gmc_v11_0_mc_init(adev);
        if (r)
                return r;

        amdgpu_gmc_get_vbios_allocations(adev);

        /* Memory manager */
        r = amdgpu_bo_init(adev);
        if (r)
                return r;

        r = gmc_v11_0_gart_init(adev);
        if (r)
                return r;

        /*
         * number of VMs
         * VMID 0 is reserved for System
         * amdgpu graphics/compute will use VMIDs 1-7
         * amdkfd will use VMIDs 8-15
         */
        adev->vm_manager.first_kfd_vmid = 8;

        amdgpu_vm_manager_init(adev);

        return 0;
}

/**
 * gmc_v11_0_gart_fini - vm fini callback
 *
 * @adev: amdgpu_device pointer
 *
 * Tears down the driver GART/VM setup (CIK).
 */
static void gmc_v11_0_gart_fini(struct amdgpu_device *adev)
{
        amdgpu_gart_table_vram_free(adev);
}

static int gmc_v11_0_sw_fini(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        amdgpu_vm_manager_fini(adev);
        gmc_v11_0_gart_fini(adev);
        amdgpu_gem_force_release(adev);
        amdgpu_bo_fini(adev);

        return 0;
}

static void gmc_v11_0_init_golden_registers(struct amdgpu_device *adev)
{
}

/**
 * gmc_v11_0_gart_enable - gart enable
 *
 * @adev: amdgpu_device pointer
 */
static int gmc_v11_0_gart_enable(struct amdgpu_device *adev)
{
        int r;
        bool value;

        if (adev->gart.bo == NULL) {
                dev_err(adev->dev, "No VRAM object for PCIE GART.\n");
                return -EINVAL;
        }

        amdgpu_gtt_mgr_recover(&adev->mman.gtt_mgr);

        r = adev->mmhub.funcs->gart_enable(adev);
        if (r)
                return r;

        /* Flush HDP after it is initialized */
        adev->hdp.funcs->flush_hdp(adev, NULL);

        value = (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_ALWAYS) ?
                false : true;

        adev->mmhub.funcs->set_fault_enable_default(adev, value);
        gmc_v11_0_flush_gpu_tlb(adev, 0, AMDGPU_MMHUB_0, 0);

        DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
                 (unsigned)(adev->gmc.gart_size >> 20),
                 (unsigned long long)amdgpu_bo_gpu_offset(adev->gart.bo));

        return 0;
}

static int gmc_v11_0_hw_init(void *handle)
{
        int r;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        /* The sequence of these two function calls matters.*/
        gmc_v11_0_init_golden_registers(adev);

        r = gmc_v11_0_gart_enable(adev);
        if (r)
                return r;

        if (adev->umc.funcs && adev->umc.funcs->init_registers)
                adev->umc.funcs->init_registers(adev);

        return 0;
}

/**
 * gmc_v11_0_gart_disable - gart disable
 *
 * @adev: amdgpu_device pointer
 *
 * This disables all VM page table.
 */
static void gmc_v11_0_gart_disable(struct amdgpu_device *adev)
{
        adev->mmhub.funcs->gart_disable(adev);
}

static int gmc_v11_0_hw_fini(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        if (amdgpu_sriov_vf(adev)) {
                /* full access mode, so don't touch any GMC register */
                DRM_DEBUG("For SRIOV client, shouldn't do anything.\n");
                return 0;
        }

        amdgpu_irq_put(adev, &adev->gmc.ecc_irq, 0);
        amdgpu_irq_put(adev, &adev->gmc.vm_fault, 0);
        gmc_v11_0_gart_disable(adev);

        return 0;
}

static int gmc_v11_0_suspend(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        gmc_v11_0_hw_fini(adev);

        return 0;
}

static int gmc_v11_0_resume(void *handle)
{
        int r;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        r = gmc_v11_0_hw_init(adev);
        if (r)
                return r;

        amdgpu_vmid_reset_all(adev);

        return 0;
}

static bool gmc_v11_0_is_idle(void *handle)
{
        /* MC is always ready in GMC v11.*/
        return true;
}

static int gmc_v11_0_wait_for_idle(void *handle)
{
        /* There is no need to wait for MC idle in GMC v11.*/
        return 0;
}

static int gmc_v11_0_soft_reset(void *handle)
{
        return 0;
}

static int gmc_v11_0_set_clockgating_state(void *handle,
                                           enum amd_clockgating_state state)
{
        int r;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        r = adev->mmhub.funcs->set_clockgating(adev, state);
        if (r)
                return r;

        return athub_v3_0_set_clockgating(adev, state);
}

static void gmc_v11_0_get_clockgating_state(void *handle, u64 *flags)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        adev->mmhub.funcs->get_clockgating(adev, flags);

        athub_v3_0_get_clockgating(adev, flags);
}

static int gmc_v11_0_set_powergating_state(void *handle,
                                           enum amd_powergating_state state)
{
        return 0;
}

const struct amd_ip_funcs gmc_v11_0_ip_funcs = {
        .name = "gmc_v11_0",
        .early_init = gmc_v11_0_early_init,
        .sw_init = gmc_v11_0_sw_init,
        .hw_init = gmc_v11_0_hw_init,
        .late_init = gmc_v11_0_late_init,
        .sw_fini = gmc_v11_0_sw_fini,
        .hw_fini = gmc_v11_0_hw_fini,
        .suspend = gmc_v11_0_suspend,
        .resume = gmc_v11_0_resume,
        .is_idle = gmc_v11_0_is_idle,
        .wait_for_idle = gmc_v11_0_wait_for_idle,
        .soft_reset = gmc_v11_0_soft_reset,
        .set_clockgating_state = gmc_v11_0_set_clockgating_state,
        .set_powergating_state = gmc_v11_0_set_powergating_state,
        .get_clockgating_state = gmc_v11_0_get_clockgating_state,
};

const struct amdgpu_ip_block_version gmc_v11_0_ip_block = {
        .type = AMD_IP_BLOCK_TYPE_GMC,
        .major = 11,
        .minor = 0,
        .rev = 0,
        .funcs = &gmc_v11_0_ip_funcs,
};