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/*
* 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 "vega10/soc15ip.h"
#include "vega10/NBIO/nbio_6_1_offset.h"
#include "vega10/NBIO/nbio_6_1_sh_mask.h"
#include "vega10/GC/gc_9_0_offset.h"
#include "vega10/GC/gc_9_0_sh_mask.h"
#include "soc15.h"
#include "soc15_common.h"
#include "mxgpu_ai.h"
static void xgpu_ai_mailbox_send_ack(struct amdgpu_device *adev)
{
u32 reg;
int timeout = AI_MAILBOX_TIMEDOUT;
u32 mask = REG_FIELD_MASK(BIF_BX_PF0_MAILBOX_CONTROL, RCV_MSG_VALID);
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL));
reg = REG_SET_FIELD(reg, BIF_BX_PF0_MAILBOX_CONTROL, RCV_MSG_ACK, 1);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL), reg);
/*Wait for RCV_MSG_VALID to be 0*/
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL));
while (reg & mask) {
if (timeout <= 0) {
pr_err("RCV_MSG_VALID is not cleared\n");
break;
}
mdelay(1);
timeout -=1;
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL));
}
}
static void xgpu_ai_mailbox_set_valid(struct amdgpu_device *adev, bool val)
{
u32 reg;
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL));
reg = REG_SET_FIELD(reg, BIF_BX_PF0_MAILBOX_CONTROL,
TRN_MSG_VALID, val ? 1 : 0);
WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_CONTROL),
reg);
}
static void xgpu_ai_mailbox_trans_msg(struct amdgpu_device *adev,
enum idh_request req)
{
u32 reg;
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);
xgpu_ai_mailbox_set_valid(adev, true);
}
static int xgpu_ai_mailbox_rcv_msg(struct amdgpu_device *adev,
enum idh_event event)
{
u32 reg;
u32 mask = REG_FIELD_MASK(BIF_BX_PF0_MAILBOX_CONTROL, RCV_MSG_VALID);
if (event != IDH_FLR_NOTIFICATION_CMPL) {
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL));
if (!(reg & mask))
return -ENOENT;
}
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 int xgpu_ai_poll_ack(struct amdgpu_device *adev)
{
int r = 0, timeout = AI_MAILBOX_TIMEDOUT;
u32 mask = REG_FIELD_MASK(BIF_BX_PF0_MAILBOX_CONTROL, TRN_MSG_ACK);
u32 reg;
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL));
while (!(reg & mask)) {
if (timeout <= 0) {
pr_err("Doesn't get ack from pf.\n");
r = -ETIME;
break;
}
msleep(1);
timeout -= 1;
reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_CONTROL));
}
return r;
}
static int xgpu_vi_poll_msg(struct amdgpu_device *adev, enum idh_event event)
{
int r = 0, timeout = AI_MAILBOX_TIMEDOUT;
r = xgpu_ai_mailbox_rcv_msg(adev, event);
while (r) {
if (timeout <= 0) {
pr_err("Doesn't get ack from pf.\n");
r = -ETIME;
break;
}
msleep(1);
timeout -= 1;
r = xgpu_ai_mailbox_rcv_msg(adev, event);
}
return r;
}
static int xgpu_ai_send_access_requests(struct amdgpu_device *adev,
enum idh_request req)
{
int r;
xgpu_ai_mailbox_trans_msg(adev, req);
/* start to poll ack */
r = xgpu_ai_poll_ack(adev);
if (r)
return r;
xgpu_ai_mailbox_set_valid(adev, false);
/* 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_vi_poll_msg(adev, IDH_READY_TO_ACCESS_GPU);
if (r)
return r;
}
return 0;
}
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;
}
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,
};
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