425 lines
12 KiB
C
425 lines
12 KiB
C
/*
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* Copyright 2016 Advanced Micro Devices, Inc.
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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 shall be included in
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* all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <drm/drmP.h>
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#include "amdgpu.h"
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#include "amdgpu_ih.h"
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#include "soc15.h"
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#include "vega10/soc15ip.h"
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#include "vega10/OSSSYS/osssys_4_0_offset.h"
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#include "vega10/OSSSYS/osssys_4_0_sh_mask.h"
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#include "soc15_common.h"
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#include "vega10_ih.h"
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static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev);
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/**
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* vega10_ih_enable_interrupts - Enable the interrupt ring buffer
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*
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* @adev: amdgpu_device pointer
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*
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* Enable the interrupt ring buffer (VEGA10).
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*/
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static void vega10_ih_enable_interrupts(struct amdgpu_device *adev)
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{
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u32 ih_rb_cntl = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL));
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), ih_rb_cntl);
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adev->irq.ih.enabled = true;
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}
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/**
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* vega10_ih_disable_interrupts - Disable the interrupt ring buffer
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*
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* @adev: amdgpu_device pointer
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*
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* Disable the interrupt ring buffer (VEGA10).
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*/
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static void vega10_ih_disable_interrupts(struct amdgpu_device *adev)
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{
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u32 ih_rb_cntl = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL));
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 0);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 0);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), ih_rb_cntl);
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/* set rptr, wptr to 0 */
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR), 0);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR), 0);
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adev->irq.ih.enabled = false;
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adev->irq.ih.rptr = 0;
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}
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/**
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* vega10_ih_irq_init - init and enable the interrupt ring
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*
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* @adev: amdgpu_device pointer
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*
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* Allocate a ring buffer for the interrupt controller,
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* enable the RLC, disable interrupts, enable the IH
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* ring buffer and enable it (VI).
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* Called at device load and reume.
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* Returns 0 for success, errors for failure.
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*/
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static int vega10_ih_irq_init(struct amdgpu_device *adev)
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{
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int ret = 0;
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int rb_bufsz;
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u32 ih_rb_cntl, ih_doorbell_rtpr;
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u32 tmp;
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u64 wptr_off;
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/* disable irqs */
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vega10_ih_disable_interrupts(adev);
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nbio_v6_1_ih_control(adev);
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ih_rb_cntl = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL));
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/* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/
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if (adev->irq.ih.use_bus_addr) {
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE), adev->irq.ih.rb_dma_addr >> 8);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI), ((u64)adev->irq.ih.rb_dma_addr >> 40) & 0xff);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SPACE, 1);
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} else {
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE), adev->irq.ih.gpu_addr >> 8);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI), (adev->irq.ih.gpu_addr >> 40) & 0xff);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SPACE, 4);
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}
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rb_bufsz = order_base_2(adev->irq.ih.ring_size / 4);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_OVERFLOW_ENABLE, 1);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz);
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/* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register value is written to memory */
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_WRITEBACK_ENABLE, 1);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0);
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0);
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if (adev->irq.msi_enabled)
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ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RPTR_REARM, 1);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), ih_rb_cntl);
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/* set the writeback address whether it's enabled or not */
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if (adev->irq.ih.use_bus_addr)
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wptr_off = adev->irq.ih.rb_dma_addr + (adev->irq.ih.wptr_offs * 4);
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else
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wptr_off = adev->wb.gpu_addr + (adev->irq.ih.wptr_offs * 4);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO), lower_32_bits(wptr_off));
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI), upper_32_bits(wptr_off) & 0xFF);
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/* set rptr, wptr to 0 */
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR), 0);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR), 0);
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ih_doorbell_rtpr = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR));
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if (adev->irq.ih.use_doorbell) {
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ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR,
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OFFSET, adev->irq.ih.doorbell_index);
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ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR,
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ENABLE, 1);
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} else {
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ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR,
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ENABLE, 0);
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}
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR), ih_doorbell_rtpr);
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nbio_v6_1_ih_doorbell_range(adev, adev->irq.ih.use_doorbell, adev->irq.ih.doorbell_index);
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tmp = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL));
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tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL,
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CLIENT18_IS_STORM_CLIENT, 1);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL), tmp);
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tmp = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_INT_FLOOD_CNTL));
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tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_INT_FLOOD_CNTL), tmp);
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pci_set_master(adev->pdev);
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/* enable interrupts */
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vega10_ih_enable_interrupts(adev);
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return ret;
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}
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/**
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* vega10_ih_irq_disable - disable interrupts
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*
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* @adev: amdgpu_device pointer
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*
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* Disable interrupts on the hw (VEGA10).
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*/
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static void vega10_ih_irq_disable(struct amdgpu_device *adev)
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{
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vega10_ih_disable_interrupts(adev);
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/* Wait and acknowledge irq */
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mdelay(1);
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}
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/**
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* vega10_ih_get_wptr - get the IH ring buffer wptr
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*
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* @adev: amdgpu_device pointer
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*
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* Get the IH ring buffer wptr from either the register
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* or the writeback memory buffer (VEGA10). Also check for
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* ring buffer overflow and deal with it.
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* Returns the value of the wptr.
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*/
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static u32 vega10_ih_get_wptr(struct amdgpu_device *adev)
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{
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u32 wptr, tmp;
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if (adev->irq.ih.use_bus_addr)
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wptr = le32_to_cpu(adev->irq.ih.ring[adev->irq.ih.wptr_offs]);
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else
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wptr = le32_to_cpu(adev->wb.wb[adev->irq.ih.wptr_offs]);
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if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) {
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wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
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/* When a ring buffer overflow happen start parsing interrupt
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* from the last not overwritten vector (wptr + 32). Hopefully
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* this should allow us to catchup.
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*/
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tmp = (wptr + 32) & adev->irq.ih.ptr_mask;
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dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",
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wptr, adev->irq.ih.rptr, tmp);
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adev->irq.ih.rptr = tmp;
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tmp = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL));
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tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), tmp);
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}
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return (wptr & adev->irq.ih.ptr_mask);
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}
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/**
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* vega10_ih_decode_iv - decode an interrupt vector
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*
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* @adev: amdgpu_device pointer
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*
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* Decodes the interrupt vector at the current rptr
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* position and also advance the position.
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*/
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static void vega10_ih_decode_iv(struct amdgpu_device *adev,
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struct amdgpu_iv_entry *entry)
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{
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/* wptr/rptr are in bytes! */
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u32 ring_index = adev->irq.ih.rptr >> 2;
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uint32_t dw[8];
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dw[0] = le32_to_cpu(adev->irq.ih.ring[ring_index + 0]);
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dw[1] = le32_to_cpu(adev->irq.ih.ring[ring_index + 1]);
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dw[2] = le32_to_cpu(adev->irq.ih.ring[ring_index + 2]);
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dw[3] = le32_to_cpu(adev->irq.ih.ring[ring_index + 3]);
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dw[4] = le32_to_cpu(adev->irq.ih.ring[ring_index + 4]);
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dw[5] = le32_to_cpu(adev->irq.ih.ring[ring_index + 5]);
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dw[6] = le32_to_cpu(adev->irq.ih.ring[ring_index + 6]);
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dw[7] = le32_to_cpu(adev->irq.ih.ring[ring_index + 7]);
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entry->client_id = dw[0] & 0xff;
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entry->src_id = (dw[0] >> 8) & 0xff;
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entry->ring_id = (dw[0] >> 16) & 0xff;
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entry->vm_id = (dw[0] >> 24) & 0xf;
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entry->vm_id_src = (dw[0] >> 31);
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entry->timestamp = dw[1] | ((u64)(dw[2] & 0xffff) << 32);
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entry->timestamp_src = dw[2] >> 31;
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entry->pas_id = dw[3] & 0xffff;
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entry->pasid_src = dw[3] >> 31;
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entry->src_data[0] = dw[4];
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entry->src_data[1] = dw[5];
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entry->src_data[2] = dw[6];
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entry->src_data[3] = dw[7];
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/* wptr/rptr are in bytes! */
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adev->irq.ih.rptr += 32;
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}
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/**
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* vega10_ih_set_rptr - set the IH ring buffer rptr
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*
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* @adev: amdgpu_device pointer
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*
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* Set the IH ring buffer rptr.
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*/
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static void vega10_ih_set_rptr(struct amdgpu_device *adev)
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{
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if (adev->irq.ih.use_doorbell) {
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/* XXX check if swapping is necessary on BE */
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if (adev->irq.ih.use_bus_addr)
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adev->irq.ih.ring[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr;
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else
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adev->wb.wb[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr;
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WDOORBELL32(adev->irq.ih.doorbell_index, adev->irq.ih.rptr);
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} else {
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WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR), adev->irq.ih.rptr);
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}
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}
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static int vega10_ih_early_init(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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vega10_ih_set_interrupt_funcs(adev);
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return 0;
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}
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static int vega10_ih_sw_init(void *handle)
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{
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int r;
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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r = amdgpu_ih_ring_init(adev, 256 * 1024, true);
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if (r)
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return r;
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adev->irq.ih.use_doorbell = true;
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adev->irq.ih.doorbell_index = AMDGPU_DOORBELL64_IH << 1;
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r = amdgpu_irq_init(adev);
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return r;
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}
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static int vega10_ih_sw_fini(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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amdgpu_irq_fini(adev);
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amdgpu_ih_ring_fini(adev);
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return 0;
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}
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static int vega10_ih_hw_init(void *handle)
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{
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int r;
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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r = vega10_ih_irq_init(adev);
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if (r)
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return r;
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return 0;
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}
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static int vega10_ih_hw_fini(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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vega10_ih_irq_disable(adev);
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return 0;
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}
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static int vega10_ih_suspend(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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return vega10_ih_hw_fini(adev);
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}
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static int vega10_ih_resume(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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return vega10_ih_hw_init(adev);
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}
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static bool vega10_ih_is_idle(void *handle)
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{
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/* todo */
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return true;
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}
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static int vega10_ih_wait_for_idle(void *handle)
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{
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/* todo */
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return -ETIMEDOUT;
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}
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static int vega10_ih_soft_reset(void *handle)
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{
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/* todo */
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return 0;
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}
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static int vega10_ih_set_clockgating_state(void *handle,
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enum amd_clockgating_state state)
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{
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return 0;
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}
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static int vega10_ih_set_powergating_state(void *handle,
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enum amd_powergating_state state)
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{
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return 0;
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}
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const struct amd_ip_funcs vega10_ih_ip_funcs = {
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.name = "vega10_ih",
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.early_init = vega10_ih_early_init,
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.late_init = NULL,
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.sw_init = vega10_ih_sw_init,
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.sw_fini = vega10_ih_sw_fini,
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.hw_init = vega10_ih_hw_init,
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.hw_fini = vega10_ih_hw_fini,
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.suspend = vega10_ih_suspend,
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.resume = vega10_ih_resume,
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.is_idle = vega10_ih_is_idle,
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.wait_for_idle = vega10_ih_wait_for_idle,
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.soft_reset = vega10_ih_soft_reset,
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.set_clockgating_state = vega10_ih_set_clockgating_state,
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.set_powergating_state = vega10_ih_set_powergating_state,
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};
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static const struct amdgpu_ih_funcs vega10_ih_funcs = {
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.get_wptr = vega10_ih_get_wptr,
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.decode_iv = vega10_ih_decode_iv,
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.set_rptr = vega10_ih_set_rptr
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};
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static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev)
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{
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if (adev->irq.ih_funcs == NULL)
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adev->irq.ih_funcs = &vega10_ih_funcs;
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}
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const struct amdgpu_ip_block_version vega10_ih_ip_block =
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{
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.type = AMD_IP_BLOCK_TYPE_IH,
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.major = 4,
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.minor = 0,
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.rev = 0,
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.funcs = &vega10_ih_ip_funcs,
|
|
};
|