/*
* Copyright 2014 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 "nbio/nbio_6_1_offset.h"
#include "nbio/nbio_6_1_sh_mask.h"
#include "gc/gc_9_0_offset.h"
#include "gc/gc_9_0_sh_mask.h"
#include "mp/mp_9_0_offset.h"
#include "soc15.h"
#include "vega10_ih.h"
#include "soc15_common.h"
#include "mxgpu_ai.h"
#include "amdgpu_reset.h"
static void xgpu_ai_mailbox_send_ack(struct amdgpu_device *adev)
{
WREG8(AI_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2);
}
static void xgpu_ai_mailbox_set_valid(struct amdgpu_device *adev, bool val)
{
WREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE, val ? 1 : 0);
}
/*
* this peek_msg could *only* be called in IRQ routine becuase in IRQ routine
* RCV_MSG_VALID filed of BIF_BX_PF0_MAILBOX_CONTROL must already be set to 1
* by host.
*
* if called no in IRQ routine, this peek_msg cannot guaranteed to return the
* correct value since it doesn't return the RCV_DW0 under the case that
* RCV_MSG_VALID is set by host.
*/
static enum idh_event xgpu_ai_mailbox_peek_msg(struct amdgpu_device *adev)
{
return RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW0));
}
static int xgpu_ai_mailbox_rcv_msg(struct amdgpu_device *adev,
enum idh_event event)
{
u32 reg;
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW0));
if (reg != event)
return -ENOENT;
xgpu_ai_mailbox_send_ack(adev);
return 0;
}
static uint8_t xgpu_ai_peek_ack(struct amdgpu_device *adev) {
return RREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE) & 2;
}
static int xgpu_ai_poll_ack(struct amdgpu_device *adev)
{
int timeout = AI_MAILBOX_POLL_ACK_TIMEDOUT;
u8 reg;
do {
reg = RREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE);
if (reg & 2)
return 0;
mdelay(5);
timeout -= 5;
} while (timeout > 1);
dev_err(adev->dev, "Doesn't get TRN_MSG_ACK from pf in %d msec\n", AI_MAILBOX_POLL_ACK_TIMEDOUT);
return -ETIME;
}
static int xgpu_ai_poll_msg(struct amdgpu_device *adev, enum idh_event event)
{
int r, timeout = AI_MAILBOX_POLL_MSG_TIMEDOUT;
do {
r = xgpu_ai_mailbox_rcv_msg(adev, event);
if (!r)
return 0;
msleep(10);
timeout -= 10;
} while (timeout > 1);
dev_err(adev->dev, "Doesn't get msg:%d from pf, error=%d\n", event, r);
return -ETIME;
}
static void xgpu_ai_mailbox_trans_msg (struct amdgpu_device *adev,
enum idh_request req, u32 data1, u32 data2, u32 data3) {
u32 reg;
int r;
uint8_t trn;
/* IMPORTANT:
* clear TRN_MSG_VALID valid to clear host's RCV_MSG_ACK
* and with host's RCV_MSG_ACK cleared hw automatically clear host's RCV_MSG_ACK
* which lead to VF's TRN_MSG_ACK cleared, otherwise below xgpu_ai_poll_ack()
* will return immediatly
*/
do {
xgpu_ai_mailbox_set_valid(adev, false);
trn = xgpu_ai_peek_ack(adev);
if (trn) {
dev_err_ratelimited(adev->dev, "trn=%x ACK should not assert! wait again !\n", trn);
msleep(1);
}
} while(trn);
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0));
reg = REG_SET_FIELD(reg, BIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0,
MSGBUF_DATA, req);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0),
reg);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW1),
data1);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW2),
data2);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW3),
data3);
xgpu_ai_mailbox_set_valid(adev, true);
/* start to poll ack */
r = xgpu_ai_poll_ack(adev);
if (r)
dev_err(adev->dev, "Doesn't get ack from pf, continue\n");
xgpu_ai_mailbox_set_valid(adev, false);
}
static int xgpu_ai_send_access_requests(struct amdgpu_device *adev,
enum idh_request req)
{
int r;
xgpu_ai_mailbox_trans_msg(adev, req, 0, 0, 0);
/* start to check msg if request is idh_req_gpu_init_access */
if (req == IDH_REQ_GPU_INIT_ACCESS ||
req == IDH_REQ_GPU_FINI_ACCESS ||
req == IDH_REQ_GPU_RESET_ACCESS) {
r = xgpu_ai_poll_msg(adev, IDH_READY_TO_ACCESS_GPU);
if (r) {
dev_err(adev->dev, "Doesn't get READY_TO_ACCESS_GPU from pf, give up\n");
return r;
}
/* Retrieve checksum from mailbox2 */
if (req == IDH_REQ_GPU_INIT_ACCESS || req == IDH_REQ_GPU_RESET_ACCESS) {
adev->virt.fw_reserve.checksum_key =
RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW2));
}
} else if (req == IDH_REQ_GPU_INIT_DATA){
/* Dummy REQ_GPU_INIT_DATA handling */
r = xgpu_ai_poll_msg(adev, IDH_REQ_GPU_INIT_DATA_READY);
/* version set to 0 since dummy */
adev->virt.req_init_data_ver = 0;
}
return 0;
}
static int xgpu_ai_request_reset(struct amdgpu_device *adev)
{
int ret, i = 0;
while (i < AI_MAILBOX_POLL_MSG_REP_MAX) {
ret = xgpu_ai_send_access_requests(adev, IDH_REQ_GPU_RESET_ACCESS);
if (!ret)
break;
i++;
}
return ret;
}
static int xgpu_ai_request_full_gpu_access(struct amdgpu_device *adev,
bool init)
{
enum idh_request req;
req = init ? IDH_REQ_GPU_INIT_ACCESS : IDH_REQ_GPU_FINI_ACCESS;
return xgpu_ai_send_access_requests(adev, req);
}
static int xgpu_ai_release_full_gpu_access(struct amdgpu_device *adev,
bool init)
{
enum idh_request req;
int r = 0;
req = init ? IDH_REL_GPU_INIT_ACCESS : IDH_REL_GPU_FINI_ACCESS;
r = xgpu_ai_send_access_requests(adev, req);
return r;
}
static int xgpu_ai_mailbox_ack_irq(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
struct amdgpu_iv_entry *entry)
{
dev_dbg(adev->dev, "get ack intr and do nothing.\n");
return 0;
}
static int xgpu_ai_set_mailbox_ack_irq(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
unsigned type,
enum amdgpu_interrupt_state state)
{
u32 tmp = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL));
tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_MAILBOX_INT_CNTL, ACK_INT_EN,
(state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL), tmp);
return 0;
}
static void xgpu_ai_ready_to_reset(struct amdgpu_device *adev)
{
xgpu_ai_mailbox_trans_msg(adev, IDH_READY_TO_RESET, 0, 0, 0);
}
static int xgpu_ai_wait_reset(struct amdgpu_device *adev)
{
int timeout = AI_MAILBOX_POLL_FLR_TIMEDOUT;
do {
if (xgpu_ai_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL) {
dev_dbg(adev->dev, "Got AI IDH_FLR_NOTIFICATION_CMPL after %d ms\n", AI_MAILBOX_POLL_FLR_TIMEDOUT - timeout);
return 0;
}
msleep(10);
timeout -= 10;
} while (timeout > 1);
dev_dbg(adev->dev, "waiting AI IDH_FLR_NOTIFICATION_CMPL timeout\n");
return -ETIME;
}
static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
{
struct amdgpu_virt *virt = container_of(work, struct amdgpu_virt, flr_work);
struct amdgpu_device *adev = container_of(virt, struct amdgpu_device, virt);
amdgpu_virt_fini_data_exchange(adev);
/* Trigger recovery for world switch failure if no TDR */
if (amdgpu_device_should_recover_gpu(adev)
&& (!amdgpu_device_has_job_running(adev) ||
adev->sdma_timeout == MAX_SCHEDULE_TIMEOUT)) {
struct amdgpu_reset_context reset_context;
memset(&reset_context, 0, sizeof(reset_context));
reset_context.method = AMD_RESET_METHOD_NONE;
reset_context.reset_req_dev = adev;
clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
set_bit(AMDGPU_HOST_FLR, &reset_context.flags);
amdgpu_device_gpu_recover(adev, NULL, &reset_context);
}
}
static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev,
struct amdgpu_irq_src *src,
unsigned type,
enum amdgpu_interrupt_state state)
{
u32 tmp = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL));
tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_MAILBOX_INT_CNTL, VALID_INT_EN,
(state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL), tmp);
return 0;
}
static int xgpu_ai_mailbox_rcv_irq(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
struct amdgpu_iv_entry *entry)
{
enum idh_event event = xgpu_ai_mailbox_peek_msg(adev);
switch (event) {
case IDH_FLR_NOTIFICATION:
if (amdgpu_sriov_runtime(adev))
WARN_ONCE(!amdgpu_reset_domain_schedule(adev->reset_domain,
&adev->virt.flr_work),
"Failed to queue work! at %s",
__func__);
break;
case IDH_QUERY_ALIVE:
xgpu_ai_mailbox_send_ack(adev);
break;
/* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore
* it byfar since that polling thread will handle it,
* other msg like flr complete is not handled here.
*/
case IDH_CLR_MSG_BUF:
case IDH_FLR_NOTIFICATION_CMPL:
case IDH_READY_TO_ACCESS_GPU:
default:
break;
}
return 0;
}
static const struct amdgpu_irq_src_funcs xgpu_ai_mailbox_ack_irq_funcs = {
.set = xgpu_ai_set_mailbox_ack_irq,
.process = xgpu_ai_mailbox_ack_irq,
};
static const struct amdgpu_irq_src_funcs xgpu_ai_mailbox_rcv_irq_funcs = {
.set = xgpu_ai_set_mailbox_rcv_irq,
.process = xgpu_ai_mailbox_rcv_irq,
};
void xgpu_ai_mailbox_set_irq_funcs(struct amdgpu_device *adev)
{
adev->virt.ack_irq.num_types = 1;
adev->virt.ack_irq.funcs = &xgpu_ai_mailbox_ack_irq_funcs;
adev->virt.rcv_irq.num_types = 1;
adev->virt.rcv_irq.funcs = &xgpu_ai_mailbox_rcv_irq_funcs;
}
int xgpu_ai_mailbox_add_irq_id(struct amdgpu_device *adev)
{
int r;
r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 135, &adev->virt.rcv_irq);
if (r)
return r;
r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 138, &adev->virt.ack_irq);
if (r) {
amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
return r;
}
return 0;
}
int xgpu_ai_mailbox_get_irq(struct amdgpu_device *adev)
{
int r;
r = amdgpu_irq_get(adev, &adev->virt.rcv_irq, 0);
if (r)
return r;
r = amdgpu_irq_get(adev, &adev->virt.ack_irq, 0);
if (r) {
amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
return r;
}
INIT_WORK(&adev->virt.flr_work, xgpu_ai_mailbox_flr_work);
return 0;
}
void xgpu_ai_mailbox_put_irq(struct amdgpu_device *adev)
{
amdgpu_irq_put(adev, &adev->virt.ack_irq, 0);
amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
}
static int xgpu_ai_request_init_data(struct amdgpu_device *adev)
{
return xgpu_ai_send_access_requests(adev, IDH_REQ_GPU_INIT_DATA);
}
static void xgpu_ai_ras_poison_handler(struct amdgpu_device *adev,
enum amdgpu_ras_block block)
{
xgpu_ai_send_access_requests(adev, IDH_RAS_POISON);
}
static bool xgpu_ai_rcvd_ras_intr(struct amdgpu_device *adev)
{
enum idh_event msg = xgpu_ai_mailbox_peek_msg(adev);
return (msg == IDH_RAS_ERROR_DETECTED || msg == 0xFFFFFFFF);
}
const struct amdgpu_virt_ops xgpu_ai_virt_ops = {
.req_full_gpu = xgpu_ai_request_full_gpu_access,
.rel_full_gpu = xgpu_ai_release_full_gpu_access,
.reset_gpu = xgpu_ai_request_reset,
.ready_to_reset = xgpu_ai_ready_to_reset,
.wait_reset = xgpu_ai_wait_reset,
.trans_msg = xgpu_ai_mailbox_trans_msg,
.req_init_data = xgpu_ai_request_init_data,
.ras_poison_handler = xgpu_ai_ras_poison_handler,
.rcvd_ras_intr = xgpu_ai_rcvd_ras_intr,
};
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