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OpenCloudOS-Kernel/drivers/gpu/drm/amd/amdgpu/navi10_ih.c

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/*
* Copyright 2019 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/pci.h>
#include "amdgpu.h"
#include "amdgpu_ih.h"
#include "oss/osssys_5_0_0_offset.h"
#include "oss/osssys_5_0_0_sh_mask.h"
#include "soc15_common.h"
#include "navi10_ih.h"
#define MAX_REARM_RETRY 10
#define mmIH_CHICKEN_Sienna_Cichlid 0x018d
#define mmIH_CHICKEN_Sienna_Cichlid_BASE_IDX 0
static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev);
/**
* force_update_wptr_for_self_int - Force update the wptr for self interrupt
*
* @adev: amdgpu_device pointer
* @threshold: threshold to trigger the wptr reporting
* @timeout: timeout to trigger the wptr reporting
* @enabled: Enable/disable timeout flush mechanism
*
* threshold input range: 0 ~ 15, default 0,
* real_threshold = 2^threshold
* timeout input range: 0 ~ 20, default 8,
* real_timeout = (2^timeout) * 1024 / (socclk_freq)
*
* Force update wptr for self interrupt ( >= SIENNA_CICHLID).
*/
static void
force_update_wptr_for_self_int(struct amdgpu_device *adev,
u32 threshold, u32 timeout, bool enabled)
{
u32 ih_cntl, ih_rb_cntl;
if (adev->asic_type < CHIP_SIENNA_CICHLID)
return;
ih_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_CNTL2);
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2,
SELF_IV_FORCE_WPTR_UPDATE_TIMEOUT, timeout);
ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2,
SELF_IV_FORCE_WPTR_UPDATE_ENABLE, enabled);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
RB_USED_INT_THRESHOLD, threshold);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
RB_USED_INT_THRESHOLD, threshold);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
WREG32_SOC15(OSSSYS, 0, mmIH_CNTL2, ih_cntl);
}
/**
* navi10_ih_enable_interrupts - Enable the interrupt ring buffer
*
* @adev: amdgpu_device pointer
*
* Enable the interrupt ring buffer (NAVI10).
*/
static void navi10_ih_enable_interrupts(struct amdgpu_device *adev)
{
u32 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
return;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
}
adev->irq.ih.enabled = true;
if (adev->irq.ih1.ring_size) {
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
RB_ENABLE, 1);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
ih_rb_cntl)) {
DRM_ERROR("program IH_RB_CNTL_RING1 failed!\n");
return;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
}
adev->irq.ih1.enabled = true;
}
if (adev->irq.ih2.ring_size) {
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
RB_ENABLE, 1);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
ih_rb_cntl)) {
DRM_ERROR("program IH_RB_CNTL_RING2 failed!\n");
return;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
}
adev->irq.ih2.enabled = true;
}
if (adev->irq.ih_soft.ring_size)
adev->irq.ih_soft.enabled = true;
}
/**
* navi10_ih_disable_interrupts - Disable the interrupt ring buffer
*
* @adev: amdgpu_device pointer
*
* Disable the interrupt ring buffer (NAVI10).
*/
static void navi10_ih_disable_interrupts(struct amdgpu_device *adev)
{
u32 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 0);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 0);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
return;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
}
/* set rptr, wptr to 0 */
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0);
adev->irq.ih.enabled = false;
adev->irq.ih.rptr = 0;
if (adev->irq.ih1.ring_size) {
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
RB_ENABLE, 0);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
ih_rb_cntl)) {
DRM_ERROR("program IH_RB_CNTL_RING1 failed!\n");
return;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
}
/* set rptr, wptr to 0 */
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING1, 0);
adev->irq.ih1.enabled = false;
adev->irq.ih1.rptr = 0;
}
if (adev->irq.ih2.ring_size) {
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
RB_ENABLE, 0);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
ih_rb_cntl)) {
DRM_ERROR("program IH_RB_CNTL_RING2 failed!\n");
return;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
}
/* set rptr, wptr to 0 */
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING2, 0);
adev->irq.ih2.enabled = false;
adev->irq.ih2.rptr = 0;
}
}
static uint32_t navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl)
{
int rb_bufsz = order_base_2(ih->ring_size / 4);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
MC_SPACE, ih->use_bus_addr ? 1 : 4);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
WPTR_OVERFLOW_CLEAR, 1);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
WPTR_OVERFLOW_ENABLE, 1);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz);
/* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register
* value is written to memory
*/
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
WPTR_WRITEBACK_ENABLE, 1);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0);
return ih_rb_cntl;
}
static uint32_t navi10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih)
{
u32 ih_doorbell_rtpr = 0;
if (ih->use_doorbell) {
ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
IH_DOORBELL_RPTR, OFFSET,
ih->doorbell_index);
ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
IH_DOORBELL_RPTR,
ENABLE, 1);
} else {
ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
IH_DOORBELL_RPTR,
ENABLE, 0);
}
return ih_doorbell_rtpr;
}
static void navi10_ih_reroute_ih(struct amdgpu_device *adev)
{
uint32_t tmp;
/* Reroute to IH ring 1 for VMC */
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x12);
tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, CLIENT_TYPE, 1);
tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
/* Reroute IH ring 1 for UMC */
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x1B);
tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
}
/**
* navi10_ih_irq_init - init and enable the interrupt ring
*
* @adev: amdgpu_device pointer
*
* Allocate a ring buffer for the interrupt controller,
* enable the RLC, disable interrupts, enable the IH
* ring buffer and enable it (NAVI).
* Called at device load and reume.
* Returns 0 for success, errors for failure.
*/
static int navi10_ih_irq_init(struct amdgpu_device *adev)
{
struct amdgpu_ih_ring *ih = &adev->irq.ih;
u32 ih_rb_cntl, ih_chicken;
u32 tmp;
/* disable irqs */
navi10_ih_disable_interrupts(adev);
adev->nbio.funcs->ih_control(adev);
/* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/
WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE, ih->gpu_addr >> 8);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI, (ih->gpu_addr >> 40) & 0xff);
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL);
ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RPTR_REARM,
!!adev->irq.msi_enabled);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
return -ETIMEDOUT;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
}
if (adev->irq.ih1.ring_size)
navi10_ih_reroute_ih(adev);
if (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) {
if (ih->use_bus_addr) {
switch (adev->asic_type) {
case CHIP_SIENNA_CICHLID:
case CHIP_NAVY_FLOUNDER:
case CHIP_VANGOGH:
case CHIP_DIMGREY_CAVEFISH:
ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid);
ih_chicken = REG_SET_FIELD(ih_chicken,
IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid, ih_chicken);
break;
default:
ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
ih_chicken = REG_SET_FIELD(ih_chicken,
IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken);
break;
}
}
}
/* set the writeback address whether it's enabled or not */
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO,
lower_32_bits(ih->wptr_addr));
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI,
upper_32_bits(ih->wptr_addr) & 0xFFFF);
/* set rptr, wptr to 0 */
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR,
navi10_ih_doorbell_rptr(ih));
adev->nbio.funcs->ih_doorbell_range(adev, ih->use_doorbell,
ih->doorbell_index);
ih = &adev->irq.ih1;
if (ih->ring_size) {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_RING1, ih->gpu_addr >> 8);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI_RING1,
(ih->gpu_addr >> 40) & 0xff);
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
WPTR_OVERFLOW_ENABLE, 0);
ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
RB_FULL_DRAIN_ENABLE, 1);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
ih_rb_cntl)) {
DRM_ERROR("program IH_RB_CNTL_RING1 failed!\n");
return -ETIMEDOUT;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
}
/* set rptr, wptr to 0 */
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING1, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING1,
navi10_ih_doorbell_rptr(ih));
}
ih = &adev->irq.ih2;
if (ih->ring_size) {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_RING2, ih->gpu_addr >> 8);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI_RING2,
(ih->gpu_addr >> 40) & 0xff);
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
ih_rb_cntl)) {
DRM_ERROR("program IH_RB_CNTL_RING2 failed!\n");
return -ETIMEDOUT;
}
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
}
/* set rptr, wptr to 0 */
WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING2, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, 0);
WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING2,
navi10_ih_doorbell_rptr(ih));
}
tmp = RREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL);
tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL,
CLIENT18_IS_STORM_CLIENT, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL, tmp);
tmp = RREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL);
tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL, tmp);
pci_set_master(adev->pdev);
/* enable interrupts */
navi10_ih_enable_interrupts(adev);
/* enable wptr force update for self int */
force_update_wptr_for_self_int(adev, 0, 8, true);
return 0;
}
/**
* navi10_ih_irq_disable - disable interrupts
*
* @adev: amdgpu_device pointer
*
* Disable interrupts on the hw (NAVI10).
*/
static void navi10_ih_irq_disable(struct amdgpu_device *adev)
{
force_update_wptr_for_self_int(adev, 0, 8, false);
navi10_ih_disable_interrupts(adev);
/* Wait and acknowledge irq */
mdelay(1);
}
/**
* navi10_ih_get_wptr - get the IH ring buffer wptr
*
* @adev: amdgpu_device pointer
* @ih: IH ring buffer to fetch wptr
*
* Get the IH ring buffer wptr from either the register
* or the writeback memory buffer (NAVI10). Also check for
* ring buffer overflow and deal with it.
* Returns the value of the wptr.
*/
static u32 navi10_ih_get_wptr(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih)
{
u32 wptr, reg, tmp;
wptr = le32_to_cpu(*ih->wptr_cpu);
if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
goto out;
if (ih == &adev->irq.ih)
reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR);
else if (ih == &adev->irq.ih1)
reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING1);
else if (ih == &adev->irq.ih2)
reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING2);
else
BUG();
wptr = RREG32_NO_KIQ(reg);
if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
goto out;
wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
/* When a ring buffer overflow happen start parsing interrupt
* from the last not overwritten vector (wptr + 32). Hopefully
* this should allow us to catch up.
*/
tmp = (wptr + 32) & ih->ptr_mask;
dev_warn(adev->dev, "IH ring buffer overflow "
"(0x%08X, 0x%08X, 0x%08X)\n",
wptr, ih->rptr, tmp);
ih->rptr = tmp;
if (ih == &adev->irq.ih)
reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL);
else if (ih == &adev->irq.ih1)
reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING1);
else if (ih == &adev->irq.ih2)
reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING2);
else
BUG();
tmp = RREG32_NO_KIQ(reg);
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
WREG32_NO_KIQ(reg, tmp);
out:
return (wptr & ih->ptr_mask);
}
/**
* navi10_ih_decode_iv - decode an interrupt vector
*
* @adev: amdgpu_device pointer
* @ih: IH ring buffer to decode
* @entry: IV entry to place decoded information into
*
* Decodes the interrupt vector at the current rptr
* position and also advance the position.
*/
static void navi10_ih_decode_iv(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih,
struct amdgpu_iv_entry *entry)
{
/* wptr/rptr are in bytes! */
u32 ring_index = ih->rptr >> 2;
uint32_t dw[8];
dw[0] = le32_to_cpu(ih->ring[ring_index + 0]);
dw[1] = le32_to_cpu(ih->ring[ring_index + 1]);
dw[2] = le32_to_cpu(ih->ring[ring_index + 2]);
dw[3] = le32_to_cpu(ih->ring[ring_index + 3]);
dw[4] = le32_to_cpu(ih->ring[ring_index + 4]);
dw[5] = le32_to_cpu(ih->ring[ring_index + 5]);
dw[6] = le32_to_cpu(ih->ring[ring_index + 6]);
dw[7] = le32_to_cpu(ih->ring[ring_index + 7]);
entry->client_id = dw[0] & 0xff;
entry->src_id = (dw[0] >> 8) & 0xff;
entry->ring_id = (dw[0] >> 16) & 0xff;
entry->vmid = (dw[0] >> 24) & 0xf;
entry->vmid_src = (dw[0] >> 31);
entry->timestamp = dw[1] | ((u64)(dw[2] & 0xffff) << 32);
entry->timestamp_src = dw[2] >> 31;
entry->pasid = dw[3] & 0xffff;
entry->pasid_src = dw[3] >> 31;
entry->src_data[0] = dw[4];
entry->src_data[1] = dw[5];
entry->src_data[2] = dw[6];
entry->src_data[3] = dw[7];
/* wptr/rptr are in bytes! */
ih->rptr += 32;
}
/**
* navi10_ih_irq_rearm - rearm IRQ if lost
*
* @adev: amdgpu_device pointer
* @ih: IH ring to match
*
*/
static void navi10_ih_irq_rearm(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih)
{
uint32_t reg_rptr = 0;
uint32_t v = 0;
uint32_t i = 0;
if (ih == &adev->irq.ih)
reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR);
else if (ih == &adev->irq.ih1)
reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING1);
else if (ih == &adev->irq.ih2)
reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING2);
else
return;
/* Rearm IRQ / re-write doorbell if doorbell write is lost */
for (i = 0; i < MAX_REARM_RETRY; i++) {
v = RREG32_NO_KIQ(reg_rptr);
if ((v < ih->ring_size) && (v != ih->rptr))
WDOORBELL32(ih->doorbell_index, ih->rptr);
else
break;
}
}
/**
* navi10_ih_set_rptr - set the IH ring buffer rptr
*
* @adev: amdgpu_device pointer
*
* @ih: IH ring buffer to set rptr
* Set the IH ring buffer rptr.
*/
static void navi10_ih_set_rptr(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih)
{
if (ih->use_doorbell) {
/* XXX check if swapping is necessary on BE */
*ih->rptr_cpu = ih->rptr;
WDOORBELL32(ih->doorbell_index, ih->rptr);
if (amdgpu_sriov_vf(adev))
navi10_ih_irq_rearm(adev, ih);
} else if (ih == &adev->irq.ih) {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, ih->rptr);
} else if (ih == &adev->irq.ih1) {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, ih->rptr);
} else if (ih == &adev->irq.ih2) {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, ih->rptr);
}
}
/**
* navi10_ih_self_irq - dispatch work for ring 1 and 2
*
* @adev: amdgpu_device pointer
* @source: irq source
* @entry: IV with WPTR update
*
* Update the WPTR from the IV and schedule work to handle the entries.
*/
static int navi10_ih_self_irq(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
struct amdgpu_iv_entry *entry)
{
uint32_t wptr = cpu_to_le32(entry->src_data[0]);
switch (entry->ring_id) {
case 1:
*adev->irq.ih1.wptr_cpu = wptr;
schedule_work(&adev->irq.ih1_work);
break;
case 2:
*adev->irq.ih2.wptr_cpu = wptr;
schedule_work(&adev->irq.ih2_work);
break;
default: break;
}
return 0;
}
static const struct amdgpu_irq_src_funcs navi10_ih_self_irq_funcs = {
.process = navi10_ih_self_irq,
};
static void navi10_ih_set_self_irq_funcs(struct amdgpu_device *adev)
{
adev->irq.self_irq.num_types = 0;
adev->irq.self_irq.funcs = &navi10_ih_self_irq_funcs;
}
static int navi10_ih_early_init(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
navi10_ih_set_interrupt_funcs(adev);
navi10_ih_set_self_irq_funcs(adev);
return 0;
}
static int navi10_ih_sw_init(void *handle)
{
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
bool use_bus_addr;
r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0,
&adev->irq.self_irq);
if (r)
return r;
/* use gpu virtual address for ih ring
* until ih_checken is programmed to allow
* use bus address for ih ring by psp bl */
if ((adev->flags & AMD_IS_APU) ||
(adev->firmware.load_type == AMDGPU_FW_LOAD_PSP))
use_bus_addr = false;
else
use_bus_addr = true;
r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 256 * 1024, use_bus_addr);
if (r)
return r;
adev->irq.ih.use_doorbell = true;
adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1;
adev->irq.ih1.ring_size = 0;
adev->irq.ih2.ring_size = 0;
if (adev->asic_type < CHIP_NAVI10) {
r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true);
if (r)
return r;
adev->irq.ih1.use_doorbell = true;
adev->irq.ih1.doorbell_index =
(adev->doorbell_index.ih + 1) << 1;
r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true);
if (r)
return r;
adev->irq.ih2.use_doorbell = true;
adev->irq.ih2.doorbell_index =
(adev->doorbell_index.ih + 2) << 1;
}
r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, PAGE_SIZE, true);
if (r)
return r;
r = amdgpu_irq_init(adev);
return r;
}
static int navi10_ih_sw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini(adev);
amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
amdgpu_ih_ring_fini(adev, &adev->irq.ih);
return 0;
}
static int navi10_ih_hw_init(void *handle)
{
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
r = navi10_ih_irq_init(adev);
if (r)
return r;
return 0;
}
static int navi10_ih_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
navi10_ih_irq_disable(adev);
return 0;
}
static int navi10_ih_suspend(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
return navi10_ih_hw_fini(adev);
}
static int navi10_ih_resume(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
return navi10_ih_hw_init(adev);
}
static bool navi10_ih_is_idle(void *handle)
{
/* todo */
return true;
}
static int navi10_ih_wait_for_idle(void *handle)
{
/* todo */
return -ETIMEDOUT;
}
static int navi10_ih_soft_reset(void *handle)
{
/* todo */
return 0;
}
static void navi10_ih_update_clockgating_state(struct amdgpu_device *adev,
bool enable)
{
uint32_t data, def, field_val;
if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) {
def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL);
field_val = enable ? 0 : 1;
data = REG_SET_FIELD(data, IH_CLK_CTRL,
DBUS_MUX_CLK_SOFT_OVERRIDE, field_val);
data = REG_SET_FIELD(data, IH_CLK_CTRL,
OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val);
data = REG_SET_FIELD(data, IH_CLK_CTRL,
LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val);
data = REG_SET_FIELD(data, IH_CLK_CTRL,
DYN_CLK_SOFT_OVERRIDE, field_val);
data = REG_SET_FIELD(data, IH_CLK_CTRL,
REG_CLK_SOFT_OVERRIDE, field_val);
if (def != data)
WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data);
}
return;
}
static int navi10_ih_set_clockgating_state(void *handle,
enum amd_clockgating_state state)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
navi10_ih_update_clockgating_state(adev,
state == AMD_CG_STATE_GATE);
return 0;
}
static int navi10_ih_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
return 0;
}
static void navi10_ih_get_clockgating_state(void *handle, u32 *flags)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
if (!RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL))
*flags |= AMD_CG_SUPPORT_IH_CG;
return;
}
static const struct amd_ip_funcs navi10_ih_ip_funcs = {
.name = "navi10_ih",
.early_init = navi10_ih_early_init,
.late_init = NULL,
.sw_init = navi10_ih_sw_init,
.sw_fini = navi10_ih_sw_fini,
.hw_init = navi10_ih_hw_init,
.hw_fini = navi10_ih_hw_fini,
.suspend = navi10_ih_suspend,
.resume = navi10_ih_resume,
.is_idle = navi10_ih_is_idle,
.wait_for_idle = navi10_ih_wait_for_idle,
.soft_reset = navi10_ih_soft_reset,
.set_clockgating_state = navi10_ih_set_clockgating_state,
.set_powergating_state = navi10_ih_set_powergating_state,
.get_clockgating_state = navi10_ih_get_clockgating_state,
};
static const struct amdgpu_ih_funcs navi10_ih_funcs = {
.get_wptr = navi10_ih_get_wptr,
.decode_iv = navi10_ih_decode_iv,
.set_rptr = navi10_ih_set_rptr
};
static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev)
{
if (adev->irq.ih_funcs == NULL)
adev->irq.ih_funcs = &navi10_ih_funcs;
}
const struct amdgpu_ip_block_version navi10_ih_ip_block =
{
.type = AMD_IP_BLOCK_TYPE_IH,
.major = 5,
.minor = 0,
.rev = 0,
.funcs = &navi10_ih_ip_funcs,
};
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