1282aae55SKen Wang /* 2282aae55SKen Wang * Copyright 2016 Advanced Micro Devices, Inc. 3282aae55SKen Wang * 4282aae55SKen Wang * Permission is hereby granted, free of charge, to any person obtaining a 5282aae55SKen Wang * copy of this software and associated documentation files (the "Software"), 6282aae55SKen Wang * to deal in the Software without restriction, including without limitation 7282aae55SKen Wang * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8282aae55SKen Wang * and/or sell copies of the Software, and to permit persons to whom the 9282aae55SKen Wang * Software is furnished to do so, subject to the following conditions: 10282aae55SKen Wang * 11282aae55SKen Wang * The above copyright notice and this permission notice shall be included in 12282aae55SKen Wang * all copies or substantial portions of the Software. 13282aae55SKen Wang * 14282aae55SKen Wang * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15282aae55SKen Wang * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16282aae55SKen Wang * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17282aae55SKen Wang * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18282aae55SKen Wang * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19282aae55SKen Wang * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20282aae55SKen Wang * OTHER DEALINGS IN THE SOFTWARE. 21282aae55SKen Wang * 22282aae55SKen Wang */ 23248a1d6fSMasahiro Yamada #include <drm/drmP.h> 24282aae55SKen Wang #include "amdgpu.h" 25282aae55SKen Wang #include "amdgpu_ih.h" 26282aae55SKen Wang #include "soc15.h" 27282aae55SKen Wang 28282aae55SKen Wang 29282aae55SKen Wang #include "vega10/soc15ip.h" 308af7454eSFeifei Xu #include "oss/osssys_4_0_offset.h" 318af7454eSFeifei Xu #include "oss/osssys_4_0_sh_mask.h" 32282aae55SKen Wang 33282aae55SKen Wang #include "soc15_common.h" 34282aae55SKen Wang #include "vega10_ih.h" 35282aae55SKen Wang 36282aae55SKen Wang 37282aae55SKen Wang 38282aae55SKen Wang static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev); 39282aae55SKen Wang 40282aae55SKen Wang /** 41282aae55SKen Wang * vega10_ih_enable_interrupts - Enable the interrupt ring buffer 42282aae55SKen Wang * 43282aae55SKen Wang * @adev: amdgpu_device pointer 44282aae55SKen Wang * 45282aae55SKen Wang * Enable the interrupt ring buffer (VEGA10). 46282aae55SKen Wang */ 47282aae55SKen Wang static void vega10_ih_enable_interrupts(struct amdgpu_device *adev) 48282aae55SKen Wang { 49b2b7e457SHawking Zhang u32 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL); 50282aae55SKen Wang 51282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1); 52282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1); 53b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl); 54282aae55SKen Wang adev->irq.ih.enabled = true; 55282aae55SKen Wang } 56282aae55SKen Wang 57282aae55SKen Wang /** 58282aae55SKen Wang * vega10_ih_disable_interrupts - Disable the interrupt ring buffer 59282aae55SKen Wang * 60282aae55SKen Wang * @adev: amdgpu_device pointer 61282aae55SKen Wang * 62282aae55SKen Wang * Disable the interrupt ring buffer (VEGA10). 63282aae55SKen Wang */ 64282aae55SKen Wang static void vega10_ih_disable_interrupts(struct amdgpu_device *adev) 65282aae55SKen Wang { 66b2b7e457SHawking Zhang u32 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL); 67282aae55SKen Wang 68282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 0); 69282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 0); 70b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl); 71282aae55SKen Wang /* set rptr, wptr to 0 */ 72b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, 0); 73b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0); 74282aae55SKen Wang adev->irq.ih.enabled = false; 75282aae55SKen Wang adev->irq.ih.rptr = 0; 76282aae55SKen Wang } 77282aae55SKen Wang 78282aae55SKen Wang /** 79282aae55SKen Wang * vega10_ih_irq_init - init and enable the interrupt ring 80282aae55SKen Wang * 81282aae55SKen Wang * @adev: amdgpu_device pointer 82282aae55SKen Wang * 83282aae55SKen Wang * Allocate a ring buffer for the interrupt controller, 84282aae55SKen Wang * enable the RLC, disable interrupts, enable the IH 85282aae55SKen Wang * ring buffer and enable it (VI). 86282aae55SKen Wang * Called at device load and reume. 87282aae55SKen Wang * Returns 0 for success, errors for failure. 88282aae55SKen Wang */ 89282aae55SKen Wang static int vega10_ih_irq_init(struct amdgpu_device *adev) 90282aae55SKen Wang { 91282aae55SKen Wang int ret = 0; 92282aae55SKen Wang int rb_bufsz; 93282aae55SKen Wang u32 ih_rb_cntl, ih_doorbell_rtpr; 94282aae55SKen Wang u32 tmp; 95282aae55SKen Wang u64 wptr_off; 96282aae55SKen Wang 97282aae55SKen Wang /* disable irqs */ 98282aae55SKen Wang vega10_ih_disable_interrupts(adev); 99282aae55SKen Wang 100aecbe64fSChunming Zhou if (adev->flags & AMD_IS_APU) 101aecbe64fSChunming Zhou nbio_v7_0_ih_control(adev); 102aecbe64fSChunming Zhou else 103282aae55SKen Wang nbio_v6_1_ih_control(adev); 104282aae55SKen Wang 105b2b7e457SHawking Zhang ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL); 106282aae55SKen Wang /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ 107282aae55SKen Wang if (adev->irq.ih.use_bus_addr) { 108b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE, adev->irq.ih.rb_dma_addr >> 8); 109b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI, ((u64)adev->irq.ih.rb_dma_addr >> 40) & 0xff); 110282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SPACE, 1); 111282aae55SKen Wang } else { 112b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE, adev->irq.ih.gpu_addr >> 8); 113b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI, (adev->irq.ih.gpu_addr >> 40) & 0xff); 114282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SPACE, 4); 115282aae55SKen Wang } 116282aae55SKen Wang rb_bufsz = order_base_2(adev->irq.ih.ring_size / 4); 117282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); 118282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_OVERFLOW_ENABLE, 1); 119282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz); 120282aae55SKen Wang /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register value is written to memory */ 121282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_WRITEBACK_ENABLE, 1); 122282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1); 123282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0); 124282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0); 125282aae55SKen Wang 126282aae55SKen Wang if (adev->irq.msi_enabled) 127282aae55SKen Wang ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RPTR_REARM, 1); 128282aae55SKen Wang 129b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl); 130282aae55SKen Wang 131282aae55SKen Wang /* set the writeback address whether it's enabled or not */ 132282aae55SKen Wang if (adev->irq.ih.use_bus_addr) 133282aae55SKen Wang wptr_off = adev->irq.ih.rb_dma_addr + (adev->irq.ih.wptr_offs * 4); 134282aae55SKen Wang else 135282aae55SKen Wang wptr_off = adev->wb.gpu_addr + (adev->irq.ih.wptr_offs * 4); 136b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO, lower_32_bits(wptr_off)); 137b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI, upper_32_bits(wptr_off) & 0xFF); 138282aae55SKen Wang 139282aae55SKen Wang /* set rptr, wptr to 0 */ 140b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, 0); 141b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0); 142282aae55SKen Wang 143b2b7e457SHawking Zhang ih_doorbell_rtpr = RREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR); 144282aae55SKen Wang if (adev->irq.ih.use_doorbell) { 145282aae55SKen Wang ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR, 146282aae55SKen Wang OFFSET, adev->irq.ih.doorbell_index); 147282aae55SKen Wang ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR, 148282aae55SKen Wang ENABLE, 1); 149282aae55SKen Wang } else { 150282aae55SKen Wang ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR, 151282aae55SKen Wang ENABLE, 0); 152282aae55SKen Wang } 153b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR, ih_doorbell_rtpr); 154aecbe64fSChunming Zhou if (adev->flags & AMD_IS_APU) 155aecbe64fSChunming Zhou nbio_v7_0_ih_doorbell_range(adev, adev->irq.ih.use_doorbell, adev->irq.ih.doorbell_index); 156aecbe64fSChunming Zhou else 157282aae55SKen Wang nbio_v6_1_ih_doorbell_range(adev, adev->irq.ih.use_doorbell, adev->irq.ih.doorbell_index); 158282aae55SKen Wang 159b2b7e457SHawking Zhang tmp = RREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL); 160282aae55SKen Wang tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL, 161282aae55SKen Wang CLIENT18_IS_STORM_CLIENT, 1); 162b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL, tmp); 163282aae55SKen Wang 164b2b7e457SHawking Zhang tmp = RREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL); 165282aae55SKen Wang tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1); 166b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL, tmp); 167282aae55SKen Wang 168282aae55SKen Wang pci_set_master(adev->pdev); 169282aae55SKen Wang 170282aae55SKen Wang /* enable interrupts */ 171282aae55SKen Wang vega10_ih_enable_interrupts(adev); 172282aae55SKen Wang 173282aae55SKen Wang return ret; 174282aae55SKen Wang } 175282aae55SKen Wang 176282aae55SKen Wang /** 177282aae55SKen Wang * vega10_ih_irq_disable - disable interrupts 178282aae55SKen Wang * 179282aae55SKen Wang * @adev: amdgpu_device pointer 180282aae55SKen Wang * 181282aae55SKen Wang * Disable interrupts on the hw (VEGA10). 182282aae55SKen Wang */ 183282aae55SKen Wang static void vega10_ih_irq_disable(struct amdgpu_device *adev) 184282aae55SKen Wang { 185282aae55SKen Wang vega10_ih_disable_interrupts(adev); 186282aae55SKen Wang 187282aae55SKen Wang /* Wait and acknowledge irq */ 188282aae55SKen Wang mdelay(1); 189282aae55SKen Wang } 190282aae55SKen Wang 191282aae55SKen Wang /** 192282aae55SKen Wang * vega10_ih_get_wptr - get the IH ring buffer wptr 193282aae55SKen Wang * 194282aae55SKen Wang * @adev: amdgpu_device pointer 195282aae55SKen Wang * 196282aae55SKen Wang * Get the IH ring buffer wptr from either the register 197282aae55SKen Wang * or the writeback memory buffer (VEGA10). Also check for 198282aae55SKen Wang * ring buffer overflow and deal with it. 199282aae55SKen Wang * Returns the value of the wptr. 200282aae55SKen Wang */ 201282aae55SKen Wang static u32 vega10_ih_get_wptr(struct amdgpu_device *adev) 202282aae55SKen Wang { 203282aae55SKen Wang u32 wptr, tmp; 204282aae55SKen Wang 205282aae55SKen Wang if (adev->irq.ih.use_bus_addr) 206282aae55SKen Wang wptr = le32_to_cpu(adev->irq.ih.ring[adev->irq.ih.wptr_offs]); 207282aae55SKen Wang else 208282aae55SKen Wang wptr = le32_to_cpu(adev->wb.wb[adev->irq.ih.wptr_offs]); 209282aae55SKen Wang 210282aae55SKen Wang if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) { 211282aae55SKen Wang wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); 212282aae55SKen Wang 213282aae55SKen Wang /* When a ring buffer overflow happen start parsing interrupt 214282aae55SKen Wang * from the last not overwritten vector (wptr + 32). Hopefully 215282aae55SKen Wang * this should allow us to catchup. 216282aae55SKen Wang */ 217282aae55SKen Wang tmp = (wptr + 32) & adev->irq.ih.ptr_mask; 218282aae55SKen Wang dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", 219282aae55SKen Wang wptr, adev->irq.ih.rptr, tmp); 220282aae55SKen Wang adev->irq.ih.rptr = tmp; 221282aae55SKen Wang 2227c3f2167SMonk Liu tmp = RREG32_NO_KIQ(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL)); 223282aae55SKen Wang tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); 2247c3f2167SMonk Liu WREG32_NO_KIQ(SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL), tmp); 225282aae55SKen Wang } 226282aae55SKen Wang return (wptr & adev->irq.ih.ptr_mask); 227282aae55SKen Wang } 228282aae55SKen Wang 229282aae55SKen Wang /** 23000ecd8a2SFelix Kuehling * vega10_ih_prescreen_iv - prescreen an interrupt vector 23100ecd8a2SFelix Kuehling * 23200ecd8a2SFelix Kuehling * @adev: amdgpu_device pointer 23300ecd8a2SFelix Kuehling * 23400ecd8a2SFelix Kuehling * Returns true if the interrupt vector should be further processed. 23500ecd8a2SFelix Kuehling */ 23600ecd8a2SFelix Kuehling static bool vega10_ih_prescreen_iv(struct amdgpu_device *adev) 23700ecd8a2SFelix Kuehling { 238a2f14820SFelix Kuehling u32 ring_index = adev->irq.ih.rptr >> 2; 239a2f14820SFelix Kuehling u32 dw0, dw3, dw4, dw5; 240a2f14820SFelix Kuehling u16 pasid; 241a2f14820SFelix Kuehling u64 addr, key; 242a2f14820SFelix Kuehling struct amdgpu_vm *vm; 243a2f14820SFelix Kuehling int r; 244a2f14820SFelix Kuehling 245a2f14820SFelix Kuehling dw0 = le32_to_cpu(adev->irq.ih.ring[ring_index + 0]); 246a2f14820SFelix Kuehling dw3 = le32_to_cpu(adev->irq.ih.ring[ring_index + 3]); 247a2f14820SFelix Kuehling dw4 = le32_to_cpu(adev->irq.ih.ring[ring_index + 4]); 248a2f14820SFelix Kuehling dw5 = le32_to_cpu(adev->irq.ih.ring[ring_index + 5]); 249a2f14820SFelix Kuehling 250a2f14820SFelix Kuehling /* Filter retry page faults, let only the first one pass. If 251a2f14820SFelix Kuehling * there are too many outstanding faults, ignore them until 252a2f14820SFelix Kuehling * some faults get cleared. 253a2f14820SFelix Kuehling */ 254a2f14820SFelix Kuehling switch (dw0 & 0xff) { 255a2f14820SFelix Kuehling case AMDGPU_IH_CLIENTID_VMC: 256a2f14820SFelix Kuehling case AMDGPU_IH_CLIENTID_UTCL2: 257a2f14820SFelix Kuehling break; 258a2f14820SFelix Kuehling default: 259a2f14820SFelix Kuehling /* Not a VM fault */ 26000ecd8a2SFelix Kuehling return true; 26100ecd8a2SFelix Kuehling } 26200ecd8a2SFelix Kuehling 263a2f14820SFelix Kuehling pasid = dw3 & 0xffff; 264a2f14820SFelix Kuehling /* No PASID, can't identify faulting process */ 265a2f14820SFelix Kuehling if (!pasid) 266a2f14820SFelix Kuehling return true; 267a2f14820SFelix Kuehling 268c98171ccSFelix Kuehling /* Not a retry fault, check fault credit */ 269c98171ccSFelix Kuehling if (!(dw5 & 0x80)) { 270c98171ccSFelix Kuehling if (!amdgpu_vm_pasid_fault_credit(adev, pasid)) 271c98171ccSFelix Kuehling goto ignore_iv; 272c98171ccSFelix Kuehling return true; 273c98171ccSFelix Kuehling } 274c98171ccSFelix Kuehling 275a2f14820SFelix Kuehling addr = ((u64)(dw5 & 0xf) << 44) | ((u64)dw4 << 12); 276a2f14820SFelix Kuehling key = AMDGPU_VM_FAULT(pasid, addr); 277a2f14820SFelix Kuehling r = amdgpu_ih_add_fault(adev, key); 278a2f14820SFelix Kuehling 279a2f14820SFelix Kuehling /* Hash table is full or the fault is already being processed, 280a2f14820SFelix Kuehling * ignore further page faults 281a2f14820SFelix Kuehling */ 282a2f14820SFelix Kuehling if (r != 0) 283a2f14820SFelix Kuehling goto ignore_iv; 284a2f14820SFelix Kuehling 285a2f14820SFelix Kuehling /* Track retry faults in per-VM fault FIFO. */ 286a2f14820SFelix Kuehling spin_lock(&adev->vm_manager.pasid_lock); 287a2f14820SFelix Kuehling vm = idr_find(&adev->vm_manager.pasid_idr, pasid); 288a2f14820SFelix Kuehling spin_unlock(&adev->vm_manager.pasid_lock); 289a2f14820SFelix Kuehling if (WARN_ON_ONCE(!vm)) { 290a2f14820SFelix Kuehling /* VM not found, process it normally */ 291a2f14820SFelix Kuehling amdgpu_ih_clear_fault(adev, key); 292a2f14820SFelix Kuehling return true; 293a2f14820SFelix Kuehling } 294a2f14820SFelix Kuehling /* No locking required with single writer and single reader */ 295a2f14820SFelix Kuehling r = kfifo_put(&vm->faults, key); 296a2f14820SFelix Kuehling if (!r) { 297a2f14820SFelix Kuehling /* FIFO is full. Ignore it until there is space */ 298a2f14820SFelix Kuehling amdgpu_ih_clear_fault(adev, key); 299a2f14820SFelix Kuehling goto ignore_iv; 300a2f14820SFelix Kuehling } 301a2f14820SFelix Kuehling 302a2f14820SFelix Kuehling /* It's the first fault for this address, process it normally */ 303a2f14820SFelix Kuehling return true; 304a2f14820SFelix Kuehling 305a2f14820SFelix Kuehling ignore_iv: 306a2f14820SFelix Kuehling adev->irq.ih.rptr += 32; 307a2f14820SFelix Kuehling return false; 308a2f14820SFelix Kuehling } 309a2f14820SFelix Kuehling 31000ecd8a2SFelix Kuehling /** 311282aae55SKen Wang * vega10_ih_decode_iv - decode an interrupt vector 312282aae55SKen Wang * 313282aae55SKen Wang * @adev: amdgpu_device pointer 314282aae55SKen Wang * 315282aae55SKen Wang * Decodes the interrupt vector at the current rptr 316282aae55SKen Wang * position and also advance the position. 317282aae55SKen Wang */ 318282aae55SKen Wang static void vega10_ih_decode_iv(struct amdgpu_device *adev, 319282aae55SKen Wang struct amdgpu_iv_entry *entry) 320282aae55SKen Wang { 321282aae55SKen Wang /* wptr/rptr are in bytes! */ 322282aae55SKen Wang u32 ring_index = adev->irq.ih.rptr >> 2; 323282aae55SKen Wang uint32_t dw[8]; 324282aae55SKen Wang 325282aae55SKen Wang dw[0] = le32_to_cpu(adev->irq.ih.ring[ring_index + 0]); 326282aae55SKen Wang dw[1] = le32_to_cpu(adev->irq.ih.ring[ring_index + 1]); 327282aae55SKen Wang dw[2] = le32_to_cpu(adev->irq.ih.ring[ring_index + 2]); 328282aae55SKen Wang dw[3] = le32_to_cpu(adev->irq.ih.ring[ring_index + 3]); 329282aae55SKen Wang dw[4] = le32_to_cpu(adev->irq.ih.ring[ring_index + 4]); 330282aae55SKen Wang dw[5] = le32_to_cpu(adev->irq.ih.ring[ring_index + 5]); 331282aae55SKen Wang dw[6] = le32_to_cpu(adev->irq.ih.ring[ring_index + 6]); 332282aae55SKen Wang dw[7] = le32_to_cpu(adev->irq.ih.ring[ring_index + 7]); 333282aae55SKen Wang 334282aae55SKen Wang entry->client_id = dw[0] & 0xff; 335282aae55SKen Wang entry->src_id = (dw[0] >> 8) & 0xff; 336282aae55SKen Wang entry->ring_id = (dw[0] >> 16) & 0xff; 337282aae55SKen Wang entry->vm_id = (dw[0] >> 24) & 0xf; 338282aae55SKen Wang entry->vm_id_src = (dw[0] >> 31); 339282aae55SKen Wang entry->timestamp = dw[1] | ((u64)(dw[2] & 0xffff) << 32); 340282aae55SKen Wang entry->timestamp_src = dw[2] >> 31; 341282aae55SKen Wang entry->pas_id = dw[3] & 0xffff; 342282aae55SKen Wang entry->pasid_src = dw[3] >> 31; 343282aae55SKen Wang entry->src_data[0] = dw[4]; 344282aae55SKen Wang entry->src_data[1] = dw[5]; 345282aae55SKen Wang entry->src_data[2] = dw[6]; 346282aae55SKen Wang entry->src_data[3] = dw[7]; 347282aae55SKen Wang 348282aae55SKen Wang 349282aae55SKen Wang /* wptr/rptr are in bytes! */ 350282aae55SKen Wang adev->irq.ih.rptr += 32; 351282aae55SKen Wang } 352282aae55SKen Wang 353282aae55SKen Wang /** 354282aae55SKen Wang * vega10_ih_set_rptr - set the IH ring buffer rptr 355282aae55SKen Wang * 356282aae55SKen Wang * @adev: amdgpu_device pointer 357282aae55SKen Wang * 358282aae55SKen Wang * Set the IH ring buffer rptr. 359282aae55SKen Wang */ 360282aae55SKen Wang static void vega10_ih_set_rptr(struct amdgpu_device *adev) 361282aae55SKen Wang { 362282aae55SKen Wang if (adev->irq.ih.use_doorbell) { 363282aae55SKen Wang /* XXX check if swapping is necessary on BE */ 364282aae55SKen Wang if (adev->irq.ih.use_bus_addr) 365282aae55SKen Wang adev->irq.ih.ring[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr; 366282aae55SKen Wang else 367282aae55SKen Wang adev->wb.wb[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr; 368282aae55SKen Wang WDOORBELL32(adev->irq.ih.doorbell_index, adev->irq.ih.rptr); 369282aae55SKen Wang } else { 370b2b7e457SHawking Zhang WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, adev->irq.ih.rptr); 371282aae55SKen Wang } 372282aae55SKen Wang } 373282aae55SKen Wang 374282aae55SKen Wang static int vega10_ih_early_init(void *handle) 375282aae55SKen Wang { 376282aae55SKen Wang struct amdgpu_device *adev = (struct amdgpu_device *)handle; 377282aae55SKen Wang 378282aae55SKen Wang vega10_ih_set_interrupt_funcs(adev); 379282aae55SKen Wang return 0; 380282aae55SKen Wang } 381282aae55SKen Wang 382282aae55SKen Wang static int vega10_ih_sw_init(void *handle) 383282aae55SKen Wang { 384282aae55SKen Wang int r; 385282aae55SKen Wang struct amdgpu_device *adev = (struct amdgpu_device *)handle; 386282aae55SKen Wang 387282aae55SKen Wang r = amdgpu_ih_ring_init(adev, 256 * 1024, true); 388282aae55SKen Wang if (r) 389282aae55SKen Wang return r; 390282aae55SKen Wang 391282aae55SKen Wang adev->irq.ih.use_doorbell = true; 392282aae55SKen Wang adev->irq.ih.doorbell_index = AMDGPU_DOORBELL64_IH << 1; 393282aae55SKen Wang 394a2f14820SFelix Kuehling adev->irq.ih.faults = kmalloc(sizeof(*adev->irq.ih.faults), GFP_KERNEL); 395a2f14820SFelix Kuehling if (!adev->irq.ih.faults) 396a2f14820SFelix Kuehling return -ENOMEM; 397a2f14820SFelix Kuehling INIT_CHASH_TABLE(adev->irq.ih.faults->hash, 398a2f14820SFelix Kuehling AMDGPU_PAGEFAULT_HASH_BITS, 8, 0); 399a2f14820SFelix Kuehling spin_lock_init(&adev->irq.ih.faults->lock); 400a2f14820SFelix Kuehling adev->irq.ih.faults->count = 0; 401a2f14820SFelix Kuehling 402282aae55SKen Wang r = amdgpu_irq_init(adev); 403282aae55SKen Wang 404282aae55SKen Wang return r; 405282aae55SKen Wang } 406282aae55SKen Wang 407282aae55SKen Wang static int vega10_ih_sw_fini(void *handle) 408282aae55SKen Wang { 409282aae55SKen Wang struct amdgpu_device *adev = (struct amdgpu_device *)handle; 410282aae55SKen Wang 411282aae55SKen Wang amdgpu_irq_fini(adev); 412282aae55SKen Wang amdgpu_ih_ring_fini(adev); 413282aae55SKen Wang 414a2f14820SFelix Kuehling kfree(adev->irq.ih.faults); 415a2f14820SFelix Kuehling adev->irq.ih.faults = NULL; 416a2f14820SFelix Kuehling 417282aae55SKen Wang return 0; 418282aae55SKen Wang } 419282aae55SKen Wang 420282aae55SKen Wang static int vega10_ih_hw_init(void *handle) 421282aae55SKen Wang { 422282aae55SKen Wang int r; 423282aae55SKen Wang struct amdgpu_device *adev = (struct amdgpu_device *)handle; 424282aae55SKen Wang 425282aae55SKen Wang r = vega10_ih_irq_init(adev); 426282aae55SKen Wang if (r) 427282aae55SKen Wang return r; 428282aae55SKen Wang 429282aae55SKen Wang return 0; 430282aae55SKen Wang } 431282aae55SKen Wang 432282aae55SKen Wang static int vega10_ih_hw_fini(void *handle) 433282aae55SKen Wang { 434282aae55SKen Wang struct amdgpu_device *adev = (struct amdgpu_device *)handle; 435282aae55SKen Wang 436282aae55SKen Wang vega10_ih_irq_disable(adev); 437282aae55SKen Wang 438282aae55SKen Wang return 0; 439282aae55SKen Wang } 440282aae55SKen Wang 441282aae55SKen Wang static int vega10_ih_suspend(void *handle) 442282aae55SKen Wang { 443282aae55SKen Wang struct amdgpu_device *adev = (struct amdgpu_device *)handle; 444282aae55SKen Wang 445282aae55SKen Wang return vega10_ih_hw_fini(adev); 446282aae55SKen Wang } 447282aae55SKen Wang 448282aae55SKen Wang static int vega10_ih_resume(void *handle) 449282aae55SKen Wang { 450282aae55SKen Wang struct amdgpu_device *adev = (struct amdgpu_device *)handle; 451282aae55SKen Wang 452282aae55SKen Wang return vega10_ih_hw_init(adev); 453282aae55SKen Wang } 454282aae55SKen Wang 455282aae55SKen Wang static bool vega10_ih_is_idle(void *handle) 456282aae55SKen Wang { 457282aae55SKen Wang /* todo */ 458282aae55SKen Wang return true; 459282aae55SKen Wang } 460282aae55SKen Wang 461282aae55SKen Wang static int vega10_ih_wait_for_idle(void *handle) 462282aae55SKen Wang { 463282aae55SKen Wang /* todo */ 464282aae55SKen Wang return -ETIMEDOUT; 465282aae55SKen Wang } 466282aae55SKen Wang 467282aae55SKen Wang static int vega10_ih_soft_reset(void *handle) 468282aae55SKen Wang { 469282aae55SKen Wang /* todo */ 470282aae55SKen Wang 471282aae55SKen Wang return 0; 472282aae55SKen Wang } 473282aae55SKen Wang 474282aae55SKen Wang static int vega10_ih_set_clockgating_state(void *handle, 475282aae55SKen Wang enum amd_clockgating_state state) 476282aae55SKen Wang { 477282aae55SKen Wang return 0; 478282aae55SKen Wang } 479282aae55SKen Wang 480282aae55SKen Wang static int vega10_ih_set_powergating_state(void *handle, 481282aae55SKen Wang enum amd_powergating_state state) 482282aae55SKen Wang { 483282aae55SKen Wang return 0; 484282aae55SKen Wang } 485282aae55SKen Wang 486282aae55SKen Wang const struct amd_ip_funcs vega10_ih_ip_funcs = { 487282aae55SKen Wang .name = "vega10_ih", 488282aae55SKen Wang .early_init = vega10_ih_early_init, 489282aae55SKen Wang .late_init = NULL, 490282aae55SKen Wang .sw_init = vega10_ih_sw_init, 491282aae55SKen Wang .sw_fini = vega10_ih_sw_fini, 492282aae55SKen Wang .hw_init = vega10_ih_hw_init, 493282aae55SKen Wang .hw_fini = vega10_ih_hw_fini, 494282aae55SKen Wang .suspend = vega10_ih_suspend, 495282aae55SKen Wang .resume = vega10_ih_resume, 496282aae55SKen Wang .is_idle = vega10_ih_is_idle, 497282aae55SKen Wang .wait_for_idle = vega10_ih_wait_for_idle, 498282aae55SKen Wang .soft_reset = vega10_ih_soft_reset, 499282aae55SKen Wang .set_clockgating_state = vega10_ih_set_clockgating_state, 500282aae55SKen Wang .set_powergating_state = vega10_ih_set_powergating_state, 501282aae55SKen Wang }; 502282aae55SKen Wang 503282aae55SKen Wang static const struct amdgpu_ih_funcs vega10_ih_funcs = { 504282aae55SKen Wang .get_wptr = vega10_ih_get_wptr, 50500ecd8a2SFelix Kuehling .prescreen_iv = vega10_ih_prescreen_iv, 506282aae55SKen Wang .decode_iv = vega10_ih_decode_iv, 507282aae55SKen Wang .set_rptr = vega10_ih_set_rptr 508282aae55SKen Wang }; 509282aae55SKen Wang 510282aae55SKen Wang static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev) 511282aae55SKen Wang { 512282aae55SKen Wang if (adev->irq.ih_funcs == NULL) 513282aae55SKen Wang adev->irq.ih_funcs = &vega10_ih_funcs; 514282aae55SKen Wang } 515282aae55SKen Wang 516282aae55SKen Wang const struct amdgpu_ip_block_version vega10_ih_ip_block = 517282aae55SKen Wang { 518282aae55SKen Wang .type = AMD_IP_BLOCK_TYPE_IH, 519282aae55SKen Wang .major = 4, 520282aae55SKen Wang .minor = 0, 521282aae55SKen Wang .rev = 0, 522282aae55SKen Wang .funcs = &vega10_ih_ip_funcs, 523282aae55SKen Wang }; 524