From 3636169cc0e1cee2de56fe4a122c0ab0922927c5 Mon Sep 17 00:00:00 2001 From: Jiange Zhao Date: Wed, 4 Sep 2019 14:42:01 +0800 Subject: drm/amdgpu: Add SRIOV mailbox backend for Navi1x Mimic the ones for Vega10, add mailbox backend for Navi1x Reviewed-by: Emily Deng Signed-off-by: Jiange Zhao Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c | 380 ++++++++++++++++++++++++++++++++++ 1 file changed, 380 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c (limited to 'drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c') diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c new file mode 100644 index 000000000000..0d8767eb7a70 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c @@ -0,0 +1,380 @@ +/* + * 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_2_3_offset.h" +#include "nbio/nbio_2_3_sh_mask.h" +#include "gc/gc_10_1_0_offset.h" +#include "gc/gc_10_1_0_sh_mask.h" +#include "soc15.h" +#include "navi10_ih.h" +#include "soc15_common.h" +#include "mxgpu_nv.h" +#include "mxgpu_ai.h" + +static void xgpu_nv_mailbox_send_ack(struct amdgpu_device *adev) +{ + WREG8(NV_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2); +} + +static void xgpu_nv_mailbox_set_valid(struct amdgpu_device *adev, bool val) +{ + WREG8(NV_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_PF_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_nv_mailbox_peek_msg(struct amdgpu_device *adev) +{ + return RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, + mmBIF_BX_PF_MAILBOX_MSGBUF_RCV_DW0)); +} + + +static int xgpu_nv_mailbox_rcv_msg(struct amdgpu_device *adev, + enum idh_event event) +{ + u32 reg; + + reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, + mmBIF_BX_PF_MAILBOX_MSGBUF_RCV_DW0)); + if (reg != event) + return -ENOENT; + + xgpu_nv_mailbox_send_ack(adev); + + return 0; +} + +static uint8_t xgpu_nv_peek_ack(struct amdgpu_device *adev) +{ + return RREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE) & 2; +} + +static int xgpu_nv_poll_ack(struct amdgpu_device *adev) +{ + int timeout = NV_MAILBOX_POLL_ACK_TIMEDOUT; + u8 reg; + + do { + reg = RREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE); + if (reg & 2) + return 0; + + mdelay(5); + timeout -= 5; + } while (timeout > 1); + + pr_err("Doesn't get TRN_MSG_ACK from pf in %d msec\n", NV_MAILBOX_POLL_ACK_TIMEDOUT); + + return -ETIME; +} + +static int xgpu_nv_poll_msg(struct amdgpu_device *adev, enum idh_event event) +{ + int r, timeout = NV_MAILBOX_POLL_MSG_TIMEDOUT; + + do { + r = xgpu_nv_mailbox_rcv_msg(adev, event); + if (!r) + return 0; + + msleep(10); + timeout -= 10; + } while (timeout > 1); + + pr_err("Doesn't get msg:%d from pf, error=%d\n", event, r); + + return -ETIME; +} + +static void xgpu_nv_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_nv_poll_ack() + * will return immediatly + */ + do { + xgpu_nv_mailbox_set_valid(adev, false); + trn = xgpu_nv_peek_ack(adev); + if (trn) { + pr_err("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_PF_MAILBOX_MSGBUF_TRN_DW0)); + reg = REG_SET_FIELD(reg, BIF_BX_PF_MAILBOX_MSGBUF_TRN_DW0, + MSGBUF_DATA, req); + WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_MAILBOX_MSGBUF_TRN_DW0), + reg); + WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_MAILBOX_MSGBUF_TRN_DW1), + data1); + WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_MAILBOX_MSGBUF_TRN_DW2), + data2); + WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_MAILBOX_MSGBUF_TRN_DW3), + data3); + + xgpu_nv_mailbox_set_valid(adev, true); + + /* start to poll ack */ + r = xgpu_nv_poll_ack(adev); + if (r) + pr_err("Doesn't get ack from pf, continue\n"); + + xgpu_nv_mailbox_set_valid(adev, false); +} + +static int xgpu_nv_send_access_requests(struct amdgpu_device *adev, + enum idh_request req) +{ + int r; + + xgpu_nv_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_nv_poll_msg(adev, IDH_READY_TO_ACCESS_GPU); + if (r) { + pr_err("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_PF_MAILBOX_MSGBUF_RCV_DW2)); + } + } + + return 0; +} + +static int xgpu_nv_request_reset(struct amdgpu_device *adev) +{ + return xgpu_nv_send_access_requests(adev, IDH_REQ_GPU_RESET_ACCESS); +} + +static int xgpu_nv_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_nv_send_access_requests(adev, req); +} + +static int xgpu_nv_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_nv_send_access_requests(adev, req); + + return r; +} + +static int xgpu_nv_mailbox_ack_irq(struct amdgpu_device *adev, + struct amdgpu_irq_src *source, + struct amdgpu_iv_entry *entry) +{ + DRM_DEBUG("get ack intr and do nothing.\n"); + return 0; +} + +static int xgpu_nv_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_PF_MAILBOX_INT_CNTL)); + + tmp = REG_SET_FIELD(tmp, BIF_BX_PF_MAILBOX_INT_CNTL, ACK_INT_EN, + (state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0); + WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_MAILBOX_INT_CNTL), tmp); + + return 0; +} + +static void xgpu_nv_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); + int timeout = NV_MAILBOX_POLL_FLR_TIMEDOUT; + int locked; + + /* block amdgpu_gpu_recover till msg FLR COMPLETE received, + * otherwise the mailbox msg will be ruined/reseted by + * the VF FLR. + * + * we can unlock the lock_reset to allow "amdgpu_job_timedout" + * to run gpu_recover() after FLR_NOTIFICATION_CMPL received + * which means host side had finished this VF's FLR. + */ + locked = mutex_trylock(&adev->lock_reset); + if (locked) + adev->in_gpu_reset = 1; + + do { + if (xgpu_nv_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL) + goto flr_done; + + msleep(10); + timeout -= 10; + } while (timeout > 1); + +flr_done: + if (locked) { + adev->in_gpu_reset = 0; + mutex_unlock(&adev->lock_reset); + } + + /* Trigger recovery for world switch failure if no TDR */ + if (amdgpu_device_should_recover_gpu(adev)) + amdgpu_device_gpu_recover(adev, NULL); +} + +static int xgpu_nv_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_PF_MAILBOX_INT_CNTL)); + + tmp = REG_SET_FIELD(tmp, BIF_BX_PF_MAILBOX_INT_CNTL, VALID_INT_EN, + (state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0); + WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_MAILBOX_INT_CNTL), tmp); + + return 0; +} + +static int xgpu_nv_mailbox_rcv_irq(struct amdgpu_device *adev, + struct amdgpu_irq_src *source, + struct amdgpu_iv_entry *entry) +{ + enum idh_event event = xgpu_nv_mailbox_peek_msg(adev); + + switch (event) { + case IDH_FLR_NOTIFICATION: + if (amdgpu_sriov_runtime(adev)) + schedule_work(&adev->virt.flr_work); + 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_nv_mailbox_ack_irq_funcs = { + .set = xgpu_nv_set_mailbox_ack_irq, + .process = xgpu_nv_mailbox_ack_irq, +}; + +static const struct amdgpu_irq_src_funcs xgpu_nv_mailbox_rcv_irq_funcs = { + .set = xgpu_nv_set_mailbox_rcv_irq, + .process = xgpu_nv_mailbox_rcv_irq, +}; + +void xgpu_nv_mailbox_set_irq_funcs(struct amdgpu_device *adev) +{ + adev->virt.ack_irq.num_types = 1; + adev->virt.ack_irq.funcs = &xgpu_nv_mailbox_ack_irq_funcs; + adev->virt.rcv_irq.num_types = 1; + adev->virt.rcv_irq.funcs = &xgpu_nv_mailbox_rcv_irq_funcs; +} + +int xgpu_nv_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_nv_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_nv_mailbox_flr_work); + + return 0; +} + +void xgpu_nv_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); +} + +const struct amdgpu_virt_ops xgpu_nv_virt_ops = { + .req_full_gpu = xgpu_nv_request_full_gpu_access, + .rel_full_gpu = xgpu_nv_release_full_gpu_access, + .reset_gpu = xgpu_nv_request_reset, + .wait_reset = NULL, + .trans_msg = xgpu_nv_mailbox_trans_msg, +}; -- cgit