/*
 * Copyright 2023 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 "amdgpu.h"
#include "soc21.h"
#include "gc/gc_11_0_3_offset.h"
#include "gc/gc_11_0_3_sh_mask.h"
#include "ivsrcid/gfx/irqsrcs_gfx_11_0_0.h"
#include "soc15.h"
#include "soc15d.h"
#include "gfx_v11_0.h"


static int gfx_v11_0_3_rlc_gc_fed_irq(struct amdgpu_device *adev,
                                  struct amdgpu_irq_src *source,
                                  struct amdgpu_iv_entry *entry)
{
        uint32_t rlc_status0 = 0, rlc_status1 = 0;
        struct ras_common_if *ras_if = NULL;
        struct ras_dispatch_if ih_data = {
                .entry = entry,
        };

        rlc_status0 = RREG32(SOC15_REG_OFFSET(GC, 0, regRLC_RLCS_FED_STATUS_0));
        rlc_status1 = RREG32(SOC15_REG_OFFSET(GC, 0, regRLC_RLCS_FED_STATUS_1));

        if (!rlc_status0 && !rlc_status1) {
                dev_warn(adev->dev, "RLC_GC_FED irq is generated, but rlc_status0 and rlc_status1 are empty!\n");
                return 0;
        }

        /* Use RLC_RLCS_FED_STATUS_0/1 to distinguish FED error block. */
        if (REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA0_FED_ERR) ||
            REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA1_FED_ERR))
                ras_if = adev->sdma.ras_if;
        else
                ras_if = adev->gfx.ras_if;

        if (!ras_if) {
                dev_err(adev->dev, "Gfx or sdma ras block not initialized, rlc_status0:0x%x.\n",
                                rlc_status0);
                return -EINVAL;
        }

        dev_warn(adev->dev, "RLC %s FED IRQ\n", ras_if->name);

        if (!amdgpu_sriov_vf(adev)) {
                ih_data.head = *ras_if;
                amdgpu_ras_interrupt_dispatch(adev, &ih_data);
        } else {
                if (adev->virt.ops && adev->virt.ops->ras_poison_handler)
                        adev->virt.ops->ras_poison_handler(adev, ras_if->block);
                else
                        dev_warn(adev->dev,
                                "No ras_poison_handler interface in SRIOV for %s!\n", ras_if->name);
        }

        return 0;
}

static int gfx_v11_0_3_poison_consumption_handler(struct amdgpu_device *adev,
                                        struct amdgpu_iv_entry *entry)
{
        /* Workaround: when vmid and pasid are both zero, trigger gpu reset in KGD. */
        if (entry && (entry->client_id == SOC21_IH_CLIENTID_GFX) &&
            (entry->src_id == GFX_11_0_0__SRCID__RLC_GC_FED_INTERRUPT) &&
             !entry->vmid && !entry->pasid) {
                struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
                uint32_t rlc_status0 = 0;

                rlc_status0 = RREG32_SOC15(GC, 0, regRLC_RLCS_FED_STATUS_0);

                if (REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA0_FED_ERR) ||
                    REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA1_FED_ERR)) {
                        struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);

                        ras->gpu_reset_flags |= AMDGPU_RAS_GPU_RESET_MODE2_RESET;
                }

                if (con && !amdgpu_ras_is_rma(adev))
                        amdgpu_ras_reset_gpu(adev);
        }

        return 0;
}

struct amdgpu_gfx_ras gfx_v11_0_3_ras = {
        .rlc_gc_fed_irq = gfx_v11_0_3_rlc_gc_fed_irq,
        .poison_consumption_handler = gfx_v11_0_3_poison_consumption_handler,
};