/*
* 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 <linux/pci.h>
#include "amdgpu.h"
#include "amdgpu_ih.h"
#include "oss/osssys_7_0_0_offset.h"
#include "oss/osssys_7_0_0_sh_mask.h"
#include "soc15_common.h"
#include "ih_v7_0.h"
#define MAX_REARM_RETRY 10
static void ih_v7_0_set_interrupt_funcs(struct amdgpu_device *adev);
/**
* ih_v7_0_init_register_offset - Initialize register offset for ih rings
*
* @adev: amdgpu_device pointer
*
* Initialize register offset ih rings (IH_V7_0).
*/
static void ih_v7_0_init_register_offset(struct amdgpu_device *adev)
{
struct amdgpu_ih_regs *ih_regs;
/* ih ring 2 is removed
* ih ring and ih ring 1 are available */
if (adev->irq.ih.ring_size) {
ih_regs = &adev->irq.ih.ih_regs;
ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE);
ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE_HI);
ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_CNTL);
ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR);
ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_RPTR);
ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_DOORBELL_RPTR);
ih_regs->ih_rb_wptr_addr_lo = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR_ADDR_LO);
ih_regs->ih_rb_wptr_addr_hi = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR_ADDR_HI);
ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL;
}
if (adev->irq.ih1.ring_size) {
ih_regs = &adev->irq.ih1.ih_regs;
ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE_RING1);
ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE_HI_RING1);
ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_CNTL_RING1);
ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR_RING1);
ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_RPTR_RING1);
ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_DOORBELL_RPTR_RING1);
ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING1;
}
}
/**
* 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;
ih_cntl = RREG32_SOC15(OSSSYS, 0, regIH_CNTL2);
ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, regIH_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);
if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1, ih_rb_cntl))
return;
} else {
WREG32_SOC15(OSSSYS, 0, regIH_RB_CNTL_RING1, ih_rb_cntl);
}
WREG32_SOC15(OSSSYS, 0, regIH_CNTL2, ih_cntl);
}
/**
* ih_v7_0_toggle_ring_interrupts - toggle the interrupt ring buffer
*
* @adev: amdgpu_device pointer
* @ih: amdgpu_ih_ring pointet
* @enable: true - enable the interrupts, false - disable the interrupts
*
* Toggle the interrupt ring buffer (IH_V7_0)
*/
static int ih_v7_0_toggle_ring_interrupts(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih,
bool enable)
{
struct amdgpu_ih_regs *ih_regs;
uint32_t tmp;
ih_regs = &ih->ih_regs;
tmp = RREG32(ih_regs->ih_rb_cntl);
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_ENABLE, (enable ? 1 : 0));
/* enable_intr field is only valid in ring0 */
if (ih == &adev->irq.ih)
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0));
if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp))
return -ETIMEDOUT;
} else {
WREG32(ih_regs->ih_rb_cntl, tmp);
}
if (enable) {
ih->enabled = true;
} else {
/* set rptr, wptr to 0 */
WREG32(ih_regs->ih_rb_rptr, 0);
WREG32(ih_regs->ih_rb_wptr, 0);
ih->enabled = false;
ih->rptr = 0;
}
return 0;
}
/**
* ih_v7_0_toggle_interrupts - Toggle all the available interrupt ring buffers
*
* @adev: amdgpu_device pointer
* @enable: enable or disable interrupt ring buffers
*
* Toggle all the available interrupt ring buffers (IH_V7_0).
*/
static int ih_v7_0_toggle_interrupts(struct amdgpu_device *adev, bool enable)
{
struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1};
int i;
int r;
for (i = 0; i < ARRAY_SIZE(ih); i++) {
if (ih[i]->ring_size) {
r = ih_v7_0_toggle_ring_interrupts(adev, ih[i], enable);
if (r)
return r;
}
}
return 0;
}
static uint32_t ih_v7_0_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 ? 2 : 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 ih_v7_0_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;
}
/**
* ih_v7_0_enable_ring - enable an ih ring buffer
*
* @adev: amdgpu_device pointer
* @ih: amdgpu_ih_ring pointer
*
* Enable an ih ring buffer (IH_V7_0)
*/
static int ih_v7_0_enable_ring(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih)
{
struct amdgpu_ih_regs *ih_regs;
uint32_t tmp;
ih_regs = &ih->ih_regs;
/* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/
WREG32(ih_regs->ih_rb_base, ih->gpu_addr >> 8);
WREG32(ih_regs->ih_rb_base_hi, (ih->gpu_addr >> 40) & 0xff);
tmp = RREG32(ih_regs->ih_rb_cntl);
tmp = ih_v7_0_rb_cntl(ih, tmp);
if (ih == &adev->irq.ih)
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RPTR_REARM, !!adev->irq.msi_enabled);
if (ih == &adev->irq.ih1) {
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_ENABLE, 0);
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1);
}
if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) {
DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
return -ETIMEDOUT;
}
} else {
WREG32(ih_regs->ih_rb_cntl, tmp);
}
if (ih == &adev->irq.ih) {
/* set the ih ring 0 writeback address whether it's enabled or not */
WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr));
WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF);
}
/* set rptr, wptr to 0 */
WREG32(ih_regs->ih_rb_wptr, 0);
WREG32(ih_regs->ih_rb_rptr, 0);
WREG32(ih_regs->ih_doorbell_rptr, ih_v7_0_doorbell_rptr(ih));
return 0;
}
/**
* ih_v7_0_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.
* Called at device load and reume.
* Returns 0 for success, errors for failure.
*/
static int ih_v7_0_irq_init(struct amdgpu_device *adev)
{
struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1};
u32 ih_chicken;
u32 tmp;
int ret;
int i;
/* disable irqs */
ret = ih_v7_0_toggle_interrupts(adev, false);
if (ret)
return ret;
adev->nbio.funcs->ih_control(adev);
if (unlikely((adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) ||
(adev->firmware.load_type == AMDGPU_FW_LOAD_RLC_BACKDOOR_AUTO))) {
if (ih[0]->use_bus_addr) {
ih_chicken = RREG32_SOC15(OSSSYS, 0, regIH_CHICKEN);
ih_chicken = REG_SET_FIELD(ih_chicken,
IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1);
WREG32_SOC15(OSSSYS, 0, regIH_CHICKEN, ih_chicken);
}
}
for (i = 0; i < ARRAY_SIZE(ih); i++) {
if (ih[i]->ring_size) {
ret = ih_v7_0_enable_ring(adev, ih[i]);
if (ret)
return ret;
}
}
/* update doorbell range for ih ring 0 */
adev->nbio.funcs->ih_doorbell_range(adev, ih[0]->use_doorbell,
ih[0]->doorbell_index);
tmp = RREG32_SOC15(OSSSYS, 0, regIH_STORM_CLIENT_LIST_CNTL);
tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL,
CLIENT18_IS_STORM_CLIENT, 1);
WREG32_SOC15(OSSSYS, 0, regIH_STORM_CLIENT_LIST_CNTL, tmp);
tmp = RREG32_SOC15(OSSSYS, 0, regIH_INT_FLOOD_CNTL);
tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1);
WREG32_SOC15(OSSSYS, 0, regIH_INT_FLOOD_CNTL, tmp);
/* GC/MMHUB UTCL2 page fault interrupts are configured as
* MSI storm capable interrupts by deafult. The delay is
* used to avoid ISR being called too frequently
* when page fault happens on several continuous page
* and thus avoid MSI storm */
tmp = RREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL);
tmp = REG_SET_FIELD(tmp, IH_MSI_STORM_CTRL,
DELAY, 3);
WREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL, tmp);
/* Redirect the interrupts to IH RB1 for dGPU */
if (adev->irq.ih1.ring_size) {
tmp = RREG32_SOC15(OSSSYS, 0, regIH_RING1_CLIENT_CFG_INDEX);
tmp = REG_SET_FIELD(tmp, IH_RING1_CLIENT_CFG_INDEX, INDEX, 0);
WREG32_SOC15(OSSSYS, 0, regIH_RING1_CLIENT_CFG_INDEX, tmp);
tmp = RREG32_SOC15(OSSSYS, 0, regIH_RING1_CLIENT_CFG_DATA);
tmp = REG_SET_FIELD(tmp, IH_RING1_CLIENT_CFG_DATA, CLIENT_ID, 0xa);
tmp = REG_SET_FIELD(tmp, IH_RING1_CLIENT_CFG_DATA, SOURCE_ID, 0x0);
tmp = REG_SET_FIELD(tmp, IH_RING1_CLIENT_CFG_DATA,
SOURCE_ID_MATCH_ENABLE, 0x1);
WREG32_SOC15(OSSSYS, 0, regIH_RING1_CLIENT_CFG_DATA, tmp);
}
pci_set_master(adev->pdev);
/* enable interrupts */
ret = ih_v7_0_toggle_interrupts(adev, true);
if (ret)
return ret;
/* enable wptr force update for self int */
force_update_wptr_for_self_int(adev, 0, 8, true);
if (adev->irq.ih_soft.ring_size)
adev->irq.ih_soft.enabled = true;
return 0;
}
/**
* ih_v7_0_irq_disable - disable interrupts
*
* @adev: amdgpu_device pointer
*
* Disable interrupts on the hw.
*/
static void ih_v7_0_irq_disable(struct amdgpu_device *adev)
{
force_update_wptr_for_self_int(adev, 0, 8, false);
ih_v7_0_toggle_interrupts(adev, false);
/* Wait and acknowledge irq */
mdelay(1);
}
/**
* ih_v7_0_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. Also check for
* ring buffer overflow and deal with it.
* Returns the value of the wptr.
*/
static u32 ih_v7_0_get_wptr(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih)
{
u32 wptr, tmp;
struct amdgpu_ih_regs *ih_regs;
wptr = le32_to_cpu(*ih->wptr_cpu);
ih_regs = &ih->ih_regs;
if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
goto out;
wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr);
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;
tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl);
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
/* Unset the CLEAR_OVERFLOW bit immediately so new overflows
* can be detected.
*/
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 0);
WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
out:
return (wptr & ih->ptr_mask);
}
/**
* ih_v7_0_irq_rearm - rearm IRQ if lost
*
* @adev: amdgpu_device pointer
* @ih: IH ring to match
*
*/
static void ih_v7_0_irq_rearm(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih)
{
uint32_t v = 0;
uint32_t i = 0;
struct amdgpu_ih_regs *ih_regs;
ih_regs = &ih->ih_regs;
/* Rearm IRQ / re-write doorbell if doorbell write is lost */
for (i = 0; i < MAX_REARM_RETRY; i++) {
v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr);
if ((v < ih->ring_size) && (v != ih->rptr))
WDOORBELL32(ih->doorbell_index, ih->rptr);
else
break;
}
}
/**
* ih_v7_0_set_rptr - set the IH ring buffer rptr
*
* @adev: amdgpu_device pointer
* @ih: IH ring buffer to set rptr
*/
static void ih_v7_0_set_rptr(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih)
{
struct amdgpu_ih_regs *ih_regs;
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))
ih_v7_0_irq_rearm(adev, ih);
} else {
ih_regs = &ih->ih_regs;
WREG32(ih_regs->ih_rb_rptr, ih->rptr);
}
}
/**
* ih_v7_0_self_irq - dispatch work for ring 1
*
* @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 ih_v7_0_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;
default: break;
}
return 0;
}
static const struct amdgpu_irq_src_funcs ih_v7_0_self_irq_funcs = {
.process = ih_v7_0_self_irq,
};
static void ih_v7_0_set_self_irq_funcs(struct amdgpu_device *adev)
{
adev->irq.self_irq.num_types = 0;
adev->irq.self_irq.funcs = &ih_v7_0_self_irq_funcs;
}
static int ih_v7_0_early_init(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
ih_v7_0_set_interrupt_funcs(adev);
ih_v7_0_set_self_irq_funcs(adev);
return 0;
}
static int ih_v7_0_sw_init(void *handle)
{
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
bool use_bus_addr;
r = amdgpu_irq_add_id(adev, SOC21_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 */
use_bus_addr =
(adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) ? false : 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;
if (!(adev->flags & AMD_IS_APU)) {
r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, IH_RING_SIZE,
use_bus_addr);
if (r)
return r;
adev->irq.ih1.use_doorbell = true;
adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1;
}
/* initialize ih control register offset */
ih_v7_0_init_register_offset(adev);
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 ih_v7_0_sw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
return 0;
}
static int ih_v7_0_hw_init(void *handle)
{
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
r = ih_v7_0_irq_init(adev);
if (r)
return r;
return 0;
}
static int ih_v7_0_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
ih_v7_0_irq_disable(adev);
return 0;
}
static int ih_v7_0_suspend(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
return ih_v7_0_hw_fini(adev);
}
static int ih_v7_0_resume(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
return ih_v7_0_hw_init(adev);
}
static bool ih_v7_0_is_idle(void *handle)
{
/* todo */
return true;
}
static int ih_v7_0_wait_for_idle(void *handle)
{
/* todo */
return -ETIMEDOUT;
}
static int ih_v7_0_soft_reset(void *handle)
{
/* todo */
return 0;
}
static void ih_v7_0_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, regIH_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, regIH_CLK_CTRL, data);
}
return;
}
static int ih_v7_0_set_clockgating_state(void *handle,
enum amd_clockgating_state state)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
ih_v7_0_update_clockgating_state(adev,
state == AMD_CG_STATE_GATE);
return 0;
}
static void ih_v7_0_update_ih_mem_power_gating(struct amdgpu_device *adev,
bool enable)
{
uint32_t ih_mem_pwr_cntl;
/* Disable ih sram power cntl before switch powergating mode */
ih_mem_pwr_cntl = RREG32_SOC15(OSSSYS, 0, regIH_MEM_POWER_CTRL);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_CTRL_EN, 0);
WREG32_SOC15(OSSSYS, 0, regIH_MEM_POWER_CTRL, ih_mem_pwr_cntl);
/* It is recommended to set mem powergating mode to DS mode */
if (enable) {
/* mem power mode */
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_LS_EN, 0);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_DS_EN, 1);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_SD_EN, 0);
/* cam mem power mode */
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_RETRY_INT_CAM_MEM_POWER_LS_EN, 0);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_RETRY_INT_CAM_MEM_POWER_DS_EN, 1);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_RETRY_INT_CAM_MEM_POWER_SD_EN, 0);
/* re-enable power cntl */
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_CTRL_EN, 1);
} else {
/* mem power mode */
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_LS_EN, 0);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_DS_EN, 0);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_SD_EN, 0);
/* cam mem power mode */
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_RETRY_INT_CAM_MEM_POWER_LS_EN, 0);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_RETRY_INT_CAM_MEM_POWER_DS_EN, 0);
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_RETRY_INT_CAM_MEM_POWER_SD_EN, 0);
/* re-enable power cntl*/
ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
IH_BUFFER_MEM_POWER_CTRL_EN, 1);
}
WREG32_SOC15(OSSSYS, 0, regIH_MEM_POWER_CTRL, ih_mem_pwr_cntl);
}
static int ih_v7_0_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
bool enable = (state == AMD_PG_STATE_GATE);
if (adev->pg_flags & AMD_PG_SUPPORT_IH_SRAM_PG)
ih_v7_0_update_ih_mem_power_gating(adev, enable);
return 0;
}
static void ih_v7_0_get_clockgating_state(void *handle, u64 *flags)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
if (!RREG32_SOC15(OSSSYS, 0, regIH_CLK_CTRL))
*flags |= AMD_CG_SUPPORT_IH_CG;
return;
}
static const struct amd_ip_funcs ih_v7_0_ip_funcs = {
.name = "ih_v7_0",
.early_init = ih_v7_0_early_init,
.late_init = NULL,
.sw_init = ih_v7_0_sw_init,
.sw_fini = ih_v7_0_sw_fini,
.hw_init = ih_v7_0_hw_init,
.hw_fini = ih_v7_0_hw_fini,
.suspend = ih_v7_0_suspend,
.resume = ih_v7_0_resume,
.is_idle = ih_v7_0_is_idle,
.wait_for_idle = ih_v7_0_wait_for_idle,
.soft_reset = ih_v7_0_soft_reset,
.set_clockgating_state = ih_v7_0_set_clockgating_state,
.set_powergating_state = ih_v7_0_set_powergating_state,
.get_clockgating_state = ih_v7_0_get_clockgating_state,
.dump_ip_state = NULL,
.print_ip_state = NULL,
};
static const struct amdgpu_ih_funcs ih_v7_0_funcs = {
.get_wptr = ih_v7_0_get_wptr,
.decode_iv = amdgpu_ih_decode_iv_helper,
.decode_iv_ts = amdgpu_ih_decode_iv_ts_helper,
.set_rptr = ih_v7_0_set_rptr
};
static void ih_v7_0_set_interrupt_funcs(struct amdgpu_device *adev)
{
adev->irq.ih_funcs = &ih_v7_0_funcs;
}
const struct amdgpu_ip_block_version ih_v7_0_ip_block =
{
.type = AMD_IP_BLOCK_TYPE_IH,
.major = 7,
.minor = 0,
.rev = 0,
.funcs = &ih_v7_0_ip_funcs,
};
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