From edc611475a8adbdea8ce358216c5b1a9d710049c Mon Sep 17 00:00:00 2001 From: Hawking Zhang Date: Sun, 3 Mar 2019 13:02:40 +0800 Subject: [PATCH] drm/amdgpu: add navi10 ih ip block (v3) IH is the interrupt handler block. v1: add initial ih support (Ray) v2: add dummy prescreen iv function for navi10 (Hawking) v3: squash in additional updates (Alex) Signed-off-by: Huang Rui Signed-off-by: Hawking Zhang Reviewed-by: Alex Deucher Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/Makefile | 3 +- drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 486 +++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/navi10_ih.h | 29 ++ 3 files changed, 517 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/amd/amdgpu/navi10_ih.c create mode 100644 drivers/gpu/drm/amd/amdgpu/navi10_ih.h diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile index 8e98e242bb7f..6e1ac38c99e0 100644 --- a/drivers/gpu/drm/amd/amdgpu/Makefile +++ b/drivers/gpu/drm/amd/amdgpu/Makefile @@ -85,7 +85,8 @@ amdgpu-y += \ iceland_ih.o \ tonga_ih.o \ cz_ih.o \ - vega10_ih.o + vega10_ih.o \ + navi10_ih.o # add PSP block amdgpu-y += \ diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c new file mode 100644 index 000000000000..e963746be11c --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c @@ -0,0 +1,486 @@ +/* + * 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 +#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" + + +static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev); + +/** + * 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); + WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl); + adev->irq.ih.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); + 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; +} + +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; +} + +/** + * 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; + int ret = 0; + u32 ih_rb_cntl, ih_doorbell_rtpr, 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 (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) { + if (ih->use_bus_addr) { + 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); + } + } + + WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl); + + /* 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); + + ih_doorbell_rtpr = RREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR); + 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); + } + WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR, ih_doorbell_rtpr); + + adev->nbio_funcs->ih_doorbell_range(adev, ih->use_doorbell, + ih->doorbell_index); + + 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); + + return ret; +} + +/** + * 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) +{ + 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 + * + * 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; + + reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR); + 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; + + reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL); + 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 + * + * 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_set_rptr - set the IH ring buffer rptr + * + * @adev: amdgpu_device pointer + * + * 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); + } else + WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, ih->rptr); +} + +static int navi10_ih_early_init(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + navi10_ih_set_interrupt_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; + + /* 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; + + 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.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 ? true : false); + 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, +}; diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.h b/drivers/gpu/drm/amd/amdgpu/navi10_ih.h new file mode 100644 index 000000000000..140fbdaaed17 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.h @@ -0,0 +1,29 @@ +/* + * 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. + * + */ + +#ifndef __NAVI10_IH_H__ +#define __NAVI10_IH_H__ + +extern const struct amdgpu_ip_block_version navi10_ih_ip_block; + +#endif -- 2.30.2