| File: | dev/pci/drm/amd/amdgpu/tonga_ih.c |
| Warning: | line 444, column 3 Value stored to 'tmp' is never read |
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| 1 | /* |
| 2 | * Copyright 2014 Advanced Micro Devices, Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 20 | * OTHER DEALINGS IN THE SOFTWARE. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <linux/pci.h> |
| 25 | |
| 26 | #include "amdgpu.h" |
| 27 | #include "amdgpu_ih.h" |
| 28 | #include "vid.h" |
| 29 | |
| 30 | #include "oss/oss_3_0_d.h" |
| 31 | #include "oss/oss_3_0_sh_mask.h" |
| 32 | |
| 33 | #include "bif/bif_5_1_d.h" |
| 34 | #include "bif/bif_5_1_sh_mask.h" |
| 35 | |
| 36 | /* |
| 37 | * Interrupts |
| 38 | * Starting with r6xx, interrupts are handled via a ring buffer. |
| 39 | * Ring buffers are areas of GPU accessible memory that the GPU |
| 40 | * writes interrupt vectors into and the host reads vectors out of. |
| 41 | * There is a rptr (read pointer) that determines where the |
| 42 | * host is currently reading, and a wptr (write pointer) |
| 43 | * which determines where the GPU has written. When the |
| 44 | * pointers are equal, the ring is idle. When the GPU |
| 45 | * writes vectors to the ring buffer, it increments the |
| 46 | * wptr. When there is an interrupt, the host then starts |
| 47 | * fetching commands and processing them until the pointers are |
| 48 | * equal again at which point it updates the rptr. |
| 49 | */ |
| 50 | |
| 51 | static void tonga_ih_set_interrupt_funcs(struct amdgpu_device *adev); |
| 52 | |
| 53 | /** |
| 54 | * tonga_ih_enable_interrupts - Enable the interrupt ring buffer |
| 55 | * |
| 56 | * @adev: amdgpu_device pointer |
| 57 | * |
| 58 | * Enable the interrupt ring buffer (VI). |
| 59 | */ |
| 60 | static void tonga_ih_enable_interrupts(struct amdgpu_device *adev) |
| 61 | { |
| 62 | u32 ih_rb_cntl = RREG32(mmIH_RB_CNTL)amdgpu_device_rreg(adev, (0xe30), 0); |
| 63 | |
| 64 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1)(((ih_rb_cntl) & ~0x1) | (0x1 & ((1) << 0x0))); |
| 65 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1)(((ih_rb_cntl) & ~0x20000) | (0x20000 & ((1) << 0x11))); |
| 66 | WREG32(mmIH_RB_CNTL, ih_rb_cntl)amdgpu_device_wreg(adev, (0xe30), (ih_rb_cntl), 0); |
| 67 | adev->irq.ih.enabled = true1; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * tonga_ih_disable_interrupts - Disable the interrupt ring buffer |
| 72 | * |
| 73 | * @adev: amdgpu_device pointer |
| 74 | * |
| 75 | * Disable the interrupt ring buffer (VI). |
| 76 | */ |
| 77 | static void tonga_ih_disable_interrupts(struct amdgpu_device *adev) |
| 78 | { |
| 79 | u32 ih_rb_cntl = RREG32(mmIH_RB_CNTL)amdgpu_device_rreg(adev, (0xe30), 0); |
| 80 | |
| 81 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 0)(((ih_rb_cntl) & ~0x1) | (0x1 & ((0) << 0x0))); |
| 82 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 0)(((ih_rb_cntl) & ~0x20000) | (0x20000 & ((0) << 0x11))); |
| 83 | WREG32(mmIH_RB_CNTL, ih_rb_cntl)amdgpu_device_wreg(adev, (0xe30), (ih_rb_cntl), 0); |
| 84 | /* set rptr, wptr to 0 */ |
| 85 | WREG32(mmIH_RB_RPTR, 0)amdgpu_device_wreg(adev, (0xe32), (0), 0); |
| 86 | WREG32(mmIH_RB_WPTR, 0)amdgpu_device_wreg(adev, (0xe33), (0), 0); |
| 87 | adev->irq.ih.enabled = false0; |
| 88 | adev->irq.ih.rptr = 0; |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * tonga_ih_irq_init - init and enable the interrupt ring |
| 93 | * |
| 94 | * @adev: amdgpu_device pointer |
| 95 | * |
| 96 | * Allocate a ring buffer for the interrupt controller, |
| 97 | * enable the RLC, disable interrupts, enable the IH |
| 98 | * ring buffer and enable it (VI). |
| 99 | * Called at device load and reume. |
| 100 | * Returns 0 for success, errors for failure. |
| 101 | */ |
| 102 | static int tonga_ih_irq_init(struct amdgpu_device *adev) |
| 103 | { |
| 104 | u32 interrupt_cntl, ih_rb_cntl, ih_doorbell_rtpr; |
| 105 | struct amdgpu_ih_ring *ih = &adev->irq.ih; |
| 106 | int rb_bufsz; |
| 107 | |
| 108 | /* disable irqs */ |
| 109 | tonga_ih_disable_interrupts(adev); |
| 110 | |
| 111 | /* setup interrupt control */ |
| 112 | WREG32(mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8)amdgpu_device_wreg(adev, (0x151b), (adev->dummy_page_addr >> 8), 0); |
| 113 | interrupt_cntl = RREG32(mmINTERRUPT_CNTL)amdgpu_device_rreg(adev, (0x151a), 0); |
| 114 | /* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi |
| 115 | * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN |
| 116 | */ |
| 117 | interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0)(((interrupt_cntl) & ~0x1) | (0x1 & ((0) << 0x0 ))); |
| 118 | /* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */ |
| 119 | interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0)(((interrupt_cntl) & ~0x8) | (0x8 & ((0) << 0x3 ))); |
| 120 | WREG32(mmINTERRUPT_CNTL, interrupt_cntl)amdgpu_device_wreg(adev, (0x151a), (interrupt_cntl), 0); |
| 121 | |
| 122 | /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ |
| 123 | WREG32(mmIH_RB_BASE, ih->gpu_addr >> 8)amdgpu_device_wreg(adev, (0xe31), (ih->gpu_addr >> 8 ), 0); |
| 124 | |
| 125 | rb_bufsz = order_base_2(adev->irq.ih.ring_size / 4)drm_order(adev->irq.ih.ring_size / 4); |
| 126 | ih_rb_cntl = REG_SET_FIELD(0, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1)(((0) & ~0x80000000) | (0x80000000 & ((1) << 0x1f ))); |
| 127 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz)(((ih_rb_cntl) & ~0x3e) | (0x3e & ((rb_bufsz) << 0x1))); |
| 128 | /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register value is written to memory */ |
| 129 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_WRITEBACK_ENABLE, 1)(((ih_rb_cntl) & ~0x100) | (0x100 & ((1) << 0x8 ))); |
| 130 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0)(((ih_rb_cntl) & ~0xf000000) | (0xf000000 & ((0) << 0x18))); |
| 131 | |
| 132 | if (adev->irq.msi_enabled) |
| 133 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RPTR_REARM, 1)(((ih_rb_cntl) & ~0x200000) | (0x200000 & ((1) << 0x15))); |
| 134 | |
| 135 | WREG32(mmIH_RB_CNTL, ih_rb_cntl)amdgpu_device_wreg(adev, (0xe30), (ih_rb_cntl), 0); |
| 136 | |
| 137 | /* set the writeback address whether it's enabled or not */ |
| 138 | WREG32(mmIH_RB_WPTR_ADDR_LO, lower_32_bits(ih->wptr_addr))amdgpu_device_wreg(adev, (0xe35), (((u32)(ih->wptr_addr))) , 0); |
| 139 | WREG32(mmIH_RB_WPTR_ADDR_HI, upper_32_bits(ih->wptr_addr) & 0xFF)amdgpu_device_wreg(adev, (0xe34), (((u32)(((ih->wptr_addr) >> 16) >> 16)) & 0xFF), 0); |
| 140 | |
| 141 | /* set rptr, wptr to 0 */ |
| 142 | WREG32(mmIH_RB_RPTR, 0)amdgpu_device_wreg(adev, (0xe32), (0), 0); |
| 143 | WREG32(mmIH_RB_WPTR, 0)amdgpu_device_wreg(adev, (0xe33), (0), 0); |
| 144 | |
| 145 | ih_doorbell_rtpr = RREG32(mmIH_DOORBELL_RPTR)amdgpu_device_rreg(adev, (0xe42), 0); |
| 146 | if (adev->irq.ih.use_doorbell) { |
| 147 | ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR,(((ih_doorbell_rtpr) & ~0x1fffff) | (0x1fffff & ((adev ->irq.ih.doorbell_index) << 0x0))) |
| 148 | OFFSET, adev->irq.ih.doorbell_index)(((ih_doorbell_rtpr) & ~0x1fffff) | (0x1fffff & ((adev ->irq.ih.doorbell_index) << 0x0))); |
| 149 | ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR,(((ih_doorbell_rtpr) & ~0x10000000) | (0x10000000 & ( (1) << 0x1c))) |
| 150 | ENABLE, 1)(((ih_doorbell_rtpr) & ~0x10000000) | (0x10000000 & ( (1) << 0x1c))); |
| 151 | } else { |
| 152 | ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR,(((ih_doorbell_rtpr) & ~0x10000000) | (0x10000000 & ( (0) << 0x1c))) |
| 153 | ENABLE, 0)(((ih_doorbell_rtpr) & ~0x10000000) | (0x10000000 & ( (0) << 0x1c))); |
| 154 | } |
| 155 | WREG32(mmIH_DOORBELL_RPTR, ih_doorbell_rtpr)amdgpu_device_wreg(adev, (0xe42), (ih_doorbell_rtpr), 0); |
| 156 | |
| 157 | pci_set_master(adev->pdev); |
| 158 | |
| 159 | /* enable interrupts */ |
| 160 | tonga_ih_enable_interrupts(adev); |
| 161 | |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * tonga_ih_irq_disable - disable interrupts |
| 167 | * |
| 168 | * @adev: amdgpu_device pointer |
| 169 | * |
| 170 | * Disable interrupts on the hw (VI). |
| 171 | */ |
| 172 | static void tonga_ih_irq_disable(struct amdgpu_device *adev) |
| 173 | { |
| 174 | tonga_ih_disable_interrupts(adev); |
| 175 | |
| 176 | /* Wait and acknowledge irq */ |
| 177 | mdelay(1); |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * tonga_ih_get_wptr - get the IH ring buffer wptr |
| 182 | * |
| 183 | * @adev: amdgpu_device pointer |
| 184 | * @ih: IH ring buffer to fetch wptr |
| 185 | * |
| 186 | * Get the IH ring buffer wptr from either the register |
| 187 | * or the writeback memory buffer (VI). Also check for |
| 188 | * ring buffer overflow and deal with it. |
| 189 | * Used by cz_irq_process(VI). |
| 190 | * Returns the value of the wptr. |
| 191 | */ |
| 192 | static u32 tonga_ih_get_wptr(struct amdgpu_device *adev, |
| 193 | struct amdgpu_ih_ring *ih) |
| 194 | { |
| 195 | u32 wptr, tmp; |
| 196 | |
| 197 | wptr = le32_to_cpu(*ih->wptr_cpu)((__uint32_t)(*ih->wptr_cpu)); |
| 198 | |
| 199 | if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)(((wptr) & 0x1) >> 0x0)) |
| 200 | goto out; |
| 201 | |
| 202 | /* Double check that the overflow wasn't already cleared. */ |
| 203 | wptr = RREG32(mmIH_RB_WPTR)amdgpu_device_rreg(adev, (0xe33), 0); |
| 204 | |
| 205 | if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)(((wptr) & 0x1) >> 0x0)) |
| 206 | goto out; |
| 207 | |
| 208 | wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0)(((wptr) & ~0x1) | (0x1 & ((0) << 0x0))); |
| 209 | |
| 210 | /* When a ring buffer overflow happen start parsing interrupt |
| 211 | * from the last not overwritten vector (wptr + 16). Hopefully |
| 212 | * this should allow us to catchup. |
| 213 | */ |
| 214 | |
| 215 | dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",printf("drm:pid%d:%s *WARNING* " "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , wptr, ih ->rptr, (wptr + 16) & ih->ptr_mask) |
| 216 | wptr, ih->rptr, (wptr + 16) & ih->ptr_mask)printf("drm:pid%d:%s *WARNING* " "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , wptr, ih ->rptr, (wptr + 16) & ih->ptr_mask); |
| 217 | ih->rptr = (wptr + 16) & ih->ptr_mask; |
| 218 | tmp = RREG32(mmIH_RB_CNTL)amdgpu_device_rreg(adev, (0xe30), 0); |
| 219 | tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1)(((tmp) & ~0x80000000) | (0x80000000 & ((1) << 0x1f ))); |
| 220 | WREG32(mmIH_RB_CNTL, tmp)amdgpu_device_wreg(adev, (0xe30), (tmp), 0); |
| 221 | |
| 222 | out: |
| 223 | return (wptr & ih->ptr_mask); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * tonga_ih_decode_iv - decode an interrupt vector |
| 228 | * |
| 229 | * @adev: amdgpu_device pointer |
| 230 | * @ih: IH ring buffer to decode |
| 231 | * @entry: IV entry to place decoded information into |
| 232 | * |
| 233 | * Decodes the interrupt vector at the current rptr |
| 234 | * position and also advance the position. |
| 235 | */ |
| 236 | static void tonga_ih_decode_iv(struct amdgpu_device *adev, |
| 237 | struct amdgpu_ih_ring *ih, |
| 238 | struct amdgpu_iv_entry *entry) |
| 239 | { |
| 240 | /* wptr/rptr are in bytes! */ |
| 241 | u32 ring_index = ih->rptr >> 2; |
| 242 | uint32_t dw[4]; |
| 243 | |
| 244 | dw[0] = le32_to_cpu(ih->ring[ring_index + 0])((__uint32_t)(ih->ring[ring_index + 0])); |
| 245 | dw[1] = le32_to_cpu(ih->ring[ring_index + 1])((__uint32_t)(ih->ring[ring_index + 1])); |
| 246 | dw[2] = le32_to_cpu(ih->ring[ring_index + 2])((__uint32_t)(ih->ring[ring_index + 2])); |
| 247 | dw[3] = le32_to_cpu(ih->ring[ring_index + 3])((__uint32_t)(ih->ring[ring_index + 3])); |
| 248 | |
| 249 | entry->client_id = AMDGPU_IRQ_CLIENTID_LEGACY0; |
| 250 | entry->src_id = dw[0] & 0xff; |
| 251 | entry->src_data[0] = dw[1] & 0xfffffff; |
| 252 | entry->ring_id = dw[2] & 0xff; |
| 253 | entry->vmid = (dw[2] >> 8) & 0xff; |
| 254 | entry->pasid = (dw[2] >> 16) & 0xffff; |
| 255 | |
| 256 | /* wptr/rptr are in bytes! */ |
| 257 | ih->rptr += 16; |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * tonga_ih_set_rptr - set the IH ring buffer rptr |
| 262 | * |
| 263 | * @adev: amdgpu_device pointer |
| 264 | * @ih: IH ring buffer to set rptr |
| 265 | * |
| 266 | * Set the IH ring buffer rptr. |
| 267 | */ |
| 268 | static void tonga_ih_set_rptr(struct amdgpu_device *adev, |
| 269 | struct amdgpu_ih_ring *ih) |
| 270 | { |
| 271 | if (ih->use_doorbell) { |
| 272 | /* XXX check if swapping is necessary on BE */ |
| 273 | *ih->rptr_cpu = ih->rptr; |
| 274 | WDOORBELL32(ih->doorbell_index, ih->rptr)amdgpu_mm_wdoorbell(adev, (ih->doorbell_index), (ih->rptr )); |
| 275 | } else { |
| 276 | WREG32(mmIH_RB_RPTR, ih->rptr)amdgpu_device_wreg(adev, (0xe32), (ih->rptr), 0); |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | static int tonga_ih_early_init(void *handle) |
| 281 | { |
| 282 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 283 | int ret; |
| 284 | |
| 285 | ret = amdgpu_irq_add_domain(adev); |
| 286 | if (ret) |
| 287 | return ret; |
| 288 | |
| 289 | tonga_ih_set_interrupt_funcs(adev); |
| 290 | |
| 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | static int tonga_ih_sw_init(void *handle) |
| 295 | { |
| 296 | int r; |
| 297 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 298 | |
| 299 | r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 64 * 1024, true1); |
| 300 | if (r) |
| 301 | return r; |
| 302 | |
| 303 | adev->irq.ih.use_doorbell = true1; |
| 304 | adev->irq.ih.doorbell_index = adev->doorbell_index.ih; |
| 305 | |
| 306 | r = amdgpu_irq_init(adev); |
| 307 | |
| 308 | return r; |
| 309 | } |
| 310 | |
| 311 | static int tonga_ih_sw_fini(void *handle) |
| 312 | { |
| 313 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 314 | |
| 315 | amdgpu_irq_fini_sw(adev); |
| 316 | amdgpu_irq_remove_domain(adev); |
| 317 | |
| 318 | return 0; |
| 319 | } |
| 320 | |
| 321 | static int tonga_ih_hw_init(void *handle) |
| 322 | { |
| 323 | int r; |
| 324 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 325 | |
| 326 | r = tonga_ih_irq_init(adev); |
| 327 | if (r) |
| 328 | return r; |
| 329 | |
| 330 | return 0; |
| 331 | } |
| 332 | |
| 333 | static int tonga_ih_hw_fini(void *handle) |
| 334 | { |
| 335 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 336 | |
| 337 | tonga_ih_irq_disable(adev); |
| 338 | |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | static int tonga_ih_suspend(void *handle) |
| 343 | { |
| 344 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 345 | |
| 346 | return tonga_ih_hw_fini(adev); |
| 347 | } |
| 348 | |
| 349 | static int tonga_ih_resume(void *handle) |
| 350 | { |
| 351 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 352 | |
| 353 | return tonga_ih_hw_init(adev); |
| 354 | } |
| 355 | |
| 356 | static bool_Bool tonga_ih_is_idle(void *handle) |
| 357 | { |
| 358 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 359 | u32 tmp = RREG32(mmSRBM_STATUS)amdgpu_device_rreg(adev, (0x394), 0); |
| 360 | |
| 361 | if (REG_GET_FIELD(tmp, SRBM_STATUS, IH_BUSY)(((tmp) & 0x20000) >> 0x11)) |
| 362 | return false0; |
| 363 | |
| 364 | return true1; |
| 365 | } |
| 366 | |
| 367 | static int tonga_ih_wait_for_idle(void *handle) |
| 368 | { |
| 369 | unsigned i; |
| 370 | u32 tmp; |
| 371 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 372 | |
| 373 | for (i = 0; i < adev->usec_timeout; i++) { |
| 374 | /* read MC_STATUS */ |
| 375 | tmp = RREG32(mmSRBM_STATUS)amdgpu_device_rreg(adev, (0x394), 0); |
| 376 | if (!REG_GET_FIELD(tmp, SRBM_STATUS, IH_BUSY)(((tmp) & 0x20000) >> 0x11)) |
| 377 | return 0; |
| 378 | udelay(1); |
| 379 | } |
| 380 | return -ETIMEDOUT60; |
| 381 | } |
| 382 | |
| 383 | static bool_Bool tonga_ih_check_soft_reset(void *handle) |
| 384 | { |
| 385 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 386 | u32 srbm_soft_reset = 0; |
| 387 | u32 tmp = RREG32(mmSRBM_STATUS)amdgpu_device_rreg(adev, (0x394), 0); |
| 388 | |
| 389 | if (tmp & SRBM_STATUS__IH_BUSY_MASK0x20000) |
| 390 | srbm_soft_reset = REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET,(((srbm_soft_reset) & ~0x400) | (0x400 & ((1) << 0xa))) |
| 391 | SOFT_RESET_IH, 1)(((srbm_soft_reset) & ~0x400) | (0x400 & ((1) << 0xa))); |
| 392 | |
| 393 | if (srbm_soft_reset) { |
| 394 | adev->irq.srbm_soft_reset = srbm_soft_reset; |
| 395 | return true1; |
| 396 | } else { |
| 397 | adev->irq.srbm_soft_reset = 0; |
| 398 | return false0; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | static int tonga_ih_pre_soft_reset(void *handle) |
| 403 | { |
| 404 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 405 | |
| 406 | if (!adev->irq.srbm_soft_reset) |
| 407 | return 0; |
| 408 | |
| 409 | return tonga_ih_hw_fini(adev); |
| 410 | } |
| 411 | |
| 412 | static int tonga_ih_post_soft_reset(void *handle) |
| 413 | { |
| 414 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 415 | |
| 416 | if (!adev->irq.srbm_soft_reset) |
| 417 | return 0; |
| 418 | |
| 419 | return tonga_ih_hw_init(adev); |
| 420 | } |
| 421 | |
| 422 | static int tonga_ih_soft_reset(void *handle) |
| 423 | { |
| 424 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 425 | u32 srbm_soft_reset; |
| 426 | |
| 427 | if (!adev->irq.srbm_soft_reset) |
| 428 | return 0; |
| 429 | srbm_soft_reset = adev->irq.srbm_soft_reset; |
| 430 | |
| 431 | if (srbm_soft_reset) { |
| 432 | u32 tmp; |
| 433 | |
| 434 | tmp = RREG32(mmSRBM_SOFT_RESET)amdgpu_device_rreg(adev, (0x398), 0); |
| 435 | tmp |= srbm_soft_reset; |
| 436 | dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp)do { } while(0); |
| 437 | WREG32(mmSRBM_SOFT_RESET, tmp)amdgpu_device_wreg(adev, (0x398), (tmp), 0); |
| 438 | tmp = RREG32(mmSRBM_SOFT_RESET)amdgpu_device_rreg(adev, (0x398), 0); |
| 439 | |
| 440 | udelay(50); |
| 441 | |
| 442 | tmp &= ~srbm_soft_reset; |
| 443 | WREG32(mmSRBM_SOFT_RESET, tmp)amdgpu_device_wreg(adev, (0x398), (tmp), 0); |
| 444 | tmp = RREG32(mmSRBM_SOFT_RESET)amdgpu_device_rreg(adev, (0x398), 0); |
Value stored to 'tmp' is never read | |
| 445 | |
| 446 | /* Wait a little for things to settle down */ |
| 447 | udelay(50); |
| 448 | } |
| 449 | |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | static int tonga_ih_set_clockgating_state(void *handle, |
| 454 | enum amd_clockgating_state state) |
| 455 | { |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | static int tonga_ih_set_powergating_state(void *handle, |
| 460 | enum amd_powergating_state state) |
| 461 | { |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static const struct amd_ip_funcs tonga_ih_ip_funcs = { |
| 466 | .name = "tonga_ih", |
| 467 | .early_init = tonga_ih_early_init, |
| 468 | .late_init = NULL((void *)0), |
| 469 | .sw_init = tonga_ih_sw_init, |
| 470 | .sw_fini = tonga_ih_sw_fini, |
| 471 | .hw_init = tonga_ih_hw_init, |
| 472 | .hw_fini = tonga_ih_hw_fini, |
| 473 | .suspend = tonga_ih_suspend, |
| 474 | .resume = tonga_ih_resume, |
| 475 | .is_idle = tonga_ih_is_idle, |
| 476 | .wait_for_idle = tonga_ih_wait_for_idle, |
| 477 | .check_soft_reset = tonga_ih_check_soft_reset, |
| 478 | .pre_soft_reset = tonga_ih_pre_soft_reset, |
| 479 | .soft_reset = tonga_ih_soft_reset, |
| 480 | .post_soft_reset = tonga_ih_post_soft_reset, |
| 481 | .set_clockgating_state = tonga_ih_set_clockgating_state, |
| 482 | .set_powergating_state = tonga_ih_set_powergating_state, |
| 483 | }; |
| 484 | |
| 485 | static const struct amdgpu_ih_funcs tonga_ih_funcs = { |
| 486 | .get_wptr = tonga_ih_get_wptr, |
| 487 | .decode_iv = tonga_ih_decode_iv, |
| 488 | .set_rptr = tonga_ih_set_rptr |
| 489 | }; |
| 490 | |
| 491 | static void tonga_ih_set_interrupt_funcs(struct amdgpu_device *adev) |
| 492 | { |
| 493 | adev->irq.ih_funcs = &tonga_ih_funcs; |
| 494 | } |
| 495 | |
| 496 | const struct amdgpu_ip_block_version tonga_ih_ip_block = |
| 497 | { |
| 498 | .type = AMD_IP_BLOCK_TYPE_IH, |
| 499 | .major = 3, |
| 500 | .minor = 0, |
| 501 | .rev = 0, |
| 502 | .funcs = &tonga_ih_ip_funcs, |
| 503 | }; |