From 282aae555e13b073715c4219b80d0396e3b0bd9c Mon Sep 17 00:00:00 2001 From: Ken Wang Date: Fri, 3 Mar 2017 18:06:01 -0500 Subject: [PATCH] drm/amdgpu: add vega10 interrupt handler MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Acked-by: Christian König Signed-off-by: Ken Wang Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/Makefile | 3 +- drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 424 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/vega10_ih.h | 30 +++ 3 files changed, 456 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/amd/amdgpu/vega10_ih.c create mode 100644 drivers/gpu/drm/amd/amdgpu/vega10_ih.h diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile index 82047fc..2420bb7 100644 --- a/drivers/gpu/drm/amd/amdgpu/Makefile +++ b/drivers/gpu/drm/amd/amdgpu/Makefile @@ -48,7 +48,8 @@ amdgpu-y += \ amdgpu_ih.o \ iceland_ih.o \ tonga_ih.o \ - cz_ih.o + cz_ih.o \ + vega10_ih.o # add SMC block amdgpu-y += \ diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c new file mode 100644 index 0000000..23371e1 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c @@ -0,0 +1,424 @@ +/* + * Copyright 2016 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 "drmP.h" +#include "amdgpu.h" +#include "amdgpu_ih.h" +#include "soc15.h" + + +#include "vega10/soc15ip.h" +#include "vega10/OSSSYS/osssys_4_0_offset.h" +#include "vega10/OSSSYS/osssys_4_0_sh_mask.h" + +#include "soc15_common.h" +#include "vega10_ih.h" + + + +static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev); + +/** + * vega10_ih_enable_interrupts - Enable the interrupt ring buffer + * + * @adev: amdgpu_device pointer + * + * Enable the interrupt ring buffer (VEGA10). + */ +static void vega10_ih_enable_interrupts(struct amdgpu_device *adev) +{ + u32 ih_rb_cntl = RREG32(SOC15_REG_OFFSET(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_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), ih_rb_cntl); + adev->irq.ih.enabled = true; +} + +/** + * vega10_ih_disable_interrupts - Disable the interrupt ring buffer + * + * @adev: amdgpu_device pointer + * + * Disable the interrupt ring buffer (VEGA10). + */ +static void vega10_ih_disable_interrupts(struct amdgpu_device *adev) +{ + u32 ih_rb_cntl = RREG32(SOC15_REG_OFFSET(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_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), ih_rb_cntl); + /* set rptr, wptr to 0 */ + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR), 0); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR), 0); + adev->irq.ih.enabled = false; + adev->irq.ih.rptr = 0; +} + +/** + * vega10_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 (VI). + * Called at device load and reume. + * Returns 0 for success, errors for failure. + */ +static int vega10_ih_irq_init(struct amdgpu_device *adev) +{ + int ret = 0; + int rb_bufsz; + u32 ih_rb_cntl, ih_doorbell_rtpr; + u32 tmp; + u64 wptr_off; + + /* disable irqs */ + vega10_ih_disable_interrupts(adev); + + nbio_v6_1_ih_control(adev); + + ih_rb_cntl = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL)); + /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ + if (adev->irq.ih.use_bus_addr) { + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE), adev->irq.ih.rb_dma_addr >> 8); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI), (adev->irq.ih.rb_dma_addr >> 40) &0xff); + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SPACE, 1); + } else { + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE), adev->irq.ih.gpu_addr >> 8); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI), (adev->irq.ih.gpu_addr >> 40) & 0xff); + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SPACE, 4); + } + rb_bufsz = order_base_2(adev->irq.ih.ring_size / 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); + + if (adev->irq.msi_enabled) + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RPTR_REARM, 1); + + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), ih_rb_cntl); + + /* set the writeback address whether it's enabled or not */ + if (adev->irq.ih.use_bus_addr) + wptr_off = adev->irq.ih.rb_dma_addr + (adev->irq.ih.wptr_offs * 4); + else + wptr_off = adev->wb.gpu_addr + (adev->irq.ih.wptr_offs * 4); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO), lower_32_bits(wptr_off)); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI), upper_32_bits(wptr_off) & 0xFF); + + /* set rptr, wptr to 0 */ + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR), 0); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR), 0); + + ih_doorbell_rtpr = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR)); + if (adev->irq.ih.use_doorbell) { + ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR, + OFFSET, adev->irq.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_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR), ih_doorbell_rtpr); + nbio_v6_1_ih_doorbell_range(adev, adev->irq.ih.use_doorbell, adev->irq.ih.doorbell_index); + + tmp = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL)); + tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL, + CLIENT18_IS_STORM_CLIENT, 1); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL), tmp); + + tmp = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_INT_FLOOD_CNTL)); + tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_INT_FLOOD_CNTL), tmp); + + pci_set_master(adev->pdev); + + /* enable interrupts */ + vega10_ih_enable_interrupts(adev); + + return ret; +} + +/** + * vega10_ih_irq_disable - disable interrupts + * + * @adev: amdgpu_device pointer + * + * Disable interrupts on the hw (VEGA10). + */ +static void vega10_ih_irq_disable(struct amdgpu_device *adev) +{ + vega10_ih_disable_interrupts(adev); + + /* Wait and acknowledge irq */ + mdelay(1); +} + +/** + * vega10_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 (VEGA10). Also check for + * ring buffer overflow and deal with it. + * Returns the value of the wptr. + */ +static u32 vega10_ih_get_wptr(struct amdgpu_device *adev) +{ + u32 wptr, tmp; + + if (adev->irq.ih.use_bus_addr) + wptr = le32_to_cpu(adev->irq.ih.ring[adev->irq.ih.wptr_offs]); + else + wptr = le32_to_cpu(adev->wb.wb[adev->irq.ih.wptr_offs]); + + if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) { + 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 catchup. + */ + tmp = (wptr + 32) & adev->irq.ih.ptr_mask; + dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", + wptr, adev->irq.ih.rptr, tmp); + adev->irq.ih.rptr = tmp; + + tmp = RREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL)); + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), tmp); + } + return (wptr & adev->irq.ih.ptr_mask); +} + +/** + * vega10_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 vega10_ih_decode_iv(struct amdgpu_device *adev, + struct amdgpu_iv_entry *entry) +{ + /* wptr/rptr are in bytes! */ + u32 ring_index = adev->irq.ih.rptr >> 2; + uint32_t dw[8]; + + dw[0] = le32_to_cpu(adev->irq.ih.ring[ring_index + 0]); + dw[1] = le32_to_cpu(adev->irq.ih.ring[ring_index + 1]); + dw[2] = le32_to_cpu(adev->irq.ih.ring[ring_index + 2]); + dw[3] = le32_to_cpu(adev->irq.ih.ring[ring_index + 3]); + dw[4] = le32_to_cpu(adev->irq.ih.ring[ring_index + 4]); + dw[5] = le32_to_cpu(adev->irq.ih.ring[ring_index + 5]); + dw[6] = le32_to_cpu(adev->irq.ih.ring[ring_index + 6]); + dw[7] = le32_to_cpu(adev->irq.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->vm_id = (dw[0] >> 24) & 0xf; + entry->vm_id_src = (dw[0] >> 31); + entry->timestamp = dw[1] | ((u64)(dw[2] & 0xffff) << 32); + entry->timestamp_src = dw[2] >> 31; + entry->pas_id = 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! */ + adev->irq.ih.rptr += 32; +} + +/** + * vega10_ih_set_rptr - set the IH ring buffer rptr + * + * @adev: amdgpu_device pointer + * + * Set the IH ring buffer rptr. + */ +static void vega10_ih_set_rptr(struct amdgpu_device *adev) +{ + if (adev->irq.ih.use_doorbell) { + /* XXX check if swapping is necessary on BE */ + if (adev->irq.ih.use_bus_addr) + adev->irq.ih.ring[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr; + else + adev->wb.wb[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr; + WDOORBELL32(adev->irq.ih.doorbell_index, adev->irq.ih.rptr); + } else { + WREG32(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR), adev->irq.ih.rptr); + } +} + +static int vega10_ih_early_init(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + vega10_ih_set_interrupt_funcs(adev); + return 0; +} + +static int vega10_ih_sw_init(void *handle) +{ + int r; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + r = amdgpu_ih_ring_init(adev, 256 * 1024, true); + if (r) + return r; + + adev->irq.ih.use_doorbell = true; + adev->irq.ih.doorbell_index = AMDGPU_DOORBELL64_IH << 1; + + r = amdgpu_irq_init(adev); + + return r; +} + +static int vega10_ih_sw_fini(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + amdgpu_irq_fini(adev); + amdgpu_ih_ring_fini(adev); + + return 0; +} + +static int vega10_ih_hw_init(void *handle) +{ + int r; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + r = vega10_ih_irq_init(adev); + if (r) + return r; + + return 0; +} + +static int vega10_ih_hw_fini(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + vega10_ih_irq_disable(adev); + + return 0; +} + +static int vega10_ih_suspend(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + return vega10_ih_hw_fini(adev); +} + +static int vega10_ih_resume(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + return vega10_ih_hw_init(adev); +} + +static bool vega10_ih_is_idle(void *handle) +{ + /* todo */ + return true; +} + +static int vega10_ih_wait_for_idle(void *handle) +{ + /* todo */ + return -ETIMEDOUT; +} + +static int vega10_ih_soft_reset(void *handle) +{ + /* todo */ + + return 0; +} + +static int vega10_ih_set_clockgating_state(void *handle, + enum amd_clockgating_state state) +{ + return 0; +} + +static int vega10_ih_set_powergating_state(void *handle, + enum amd_powergating_state state) +{ + return 0; +} + +const struct amd_ip_funcs vega10_ih_ip_funcs = { + .name = "vega10_ih", + .early_init = vega10_ih_early_init, + .late_init = NULL, + .sw_init = vega10_ih_sw_init, + .sw_fini = vega10_ih_sw_fini, + .hw_init = vega10_ih_hw_init, + .hw_fini = vega10_ih_hw_fini, + .suspend = vega10_ih_suspend, + .resume = vega10_ih_resume, + .is_idle = vega10_ih_is_idle, + .wait_for_idle = vega10_ih_wait_for_idle, + .soft_reset = vega10_ih_soft_reset, + .set_clockgating_state = vega10_ih_set_clockgating_state, + .set_powergating_state = vega10_ih_set_powergating_state, +}; + +static const struct amdgpu_ih_funcs vega10_ih_funcs = { + .get_wptr = vega10_ih_get_wptr, + .decode_iv = vega10_ih_decode_iv, + .set_rptr = vega10_ih_set_rptr +}; + +static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev) +{ + if (adev->irq.ih_funcs == NULL) + adev->irq.ih_funcs = &vega10_ih_funcs; +} + +const struct amdgpu_ip_block_version vega10_ih_ip_block = +{ + .type = AMD_IP_BLOCK_TYPE_IH, + .major = 4, + .minor = 0, + .rev = 0, + .funcs = &vega10_ih_ip_funcs, +}; diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.h b/drivers/gpu/drm/amd/amdgpu/vega10_ih.h new file mode 100644 index 0000000..82edd28b --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.h @@ -0,0 +1,30 @@ +/* + * Copyright 2016 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 __VEGA10_IH_H__ +#define __VEGA10_IH_H__ + +extern const struct amd_ip_funcs vega10_ih_ip_funcs; +extern const struct amdgpu_ip_block_version vega10_ih_ip_block; + +#endif -- 2.7.4