Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 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 | #include "drmP.h" |
| 24 | #include "amdgpu.h" |
| 25 | #include "amdgpu_ih.h" |
| 26 | #include "vid.h" |
| 27 | |
| 28 | #include "oss/oss_3_0_d.h" |
| 29 | #include "oss/oss_3_0_sh_mask.h" |
| 30 | |
| 31 | #include "bif/bif_5_1_d.h" |
| 32 | #include "bif/bif_5_1_sh_mask.h" |
| 33 | |
| 34 | /* |
| 35 | * Interrupts |
| 36 | * Starting with r6xx, interrupts are handled via a ring buffer. |
| 37 | * Ring buffers are areas of GPU accessible memory that the GPU |
| 38 | * writes interrupt vectors into and the host reads vectors out of. |
| 39 | * There is a rptr (read pointer) that determines where the |
| 40 | * host is currently reading, and a wptr (write pointer) |
| 41 | * which determines where the GPU has written. When the |
| 42 | * pointers are equal, the ring is idle. When the GPU |
| 43 | * writes vectors to the ring buffer, it increments the |
| 44 | * wptr. When there is an interrupt, the host then starts |
| 45 | * fetching commands and processing them until the pointers are |
| 46 | * equal again at which point it updates the rptr. |
| 47 | */ |
| 48 | |
| 49 | static void tonga_ih_set_interrupt_funcs(struct amdgpu_device *adev); |
| 50 | |
| 51 | /** |
| 52 | * tonga_ih_enable_interrupts - Enable the interrupt ring buffer |
| 53 | * |
| 54 | * @adev: amdgpu_device pointer |
| 55 | * |
| 56 | * Enable the interrupt ring buffer (VI). |
| 57 | */ |
| 58 | static void tonga_ih_enable_interrupts(struct amdgpu_device *adev) |
| 59 | { |
| 60 | u32 ih_rb_cntl = RREG32(mmIH_RB_CNTL); |
| 61 | |
| 62 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1); |
| 63 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1); |
| 64 | WREG32(mmIH_RB_CNTL, ih_rb_cntl); |
| 65 | adev->irq.ih.enabled = true; |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * tonga_ih_disable_interrupts - Disable the interrupt ring buffer |
| 70 | * |
| 71 | * @adev: amdgpu_device pointer |
| 72 | * |
| 73 | * Disable the interrupt ring buffer (VI). |
| 74 | */ |
| 75 | static void tonga_ih_disable_interrupts(struct amdgpu_device *adev) |
| 76 | { |
| 77 | u32 ih_rb_cntl = RREG32(mmIH_RB_CNTL); |
| 78 | |
| 79 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 0); |
| 80 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 0); |
| 81 | WREG32(mmIH_RB_CNTL, ih_rb_cntl); |
| 82 | /* set rptr, wptr to 0 */ |
| 83 | WREG32(mmIH_RB_RPTR, 0); |
| 84 | WREG32(mmIH_RB_WPTR, 0); |
| 85 | adev->irq.ih.enabled = false; |
| 86 | adev->irq.ih.rptr = 0; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * tonga_ih_irq_init - init and enable the interrupt ring |
| 91 | * |
| 92 | * @adev: amdgpu_device pointer |
| 93 | * |
| 94 | * Allocate a ring buffer for the interrupt controller, |
| 95 | * enable the RLC, disable interrupts, enable the IH |
| 96 | * ring buffer and enable it (VI). |
| 97 | * Called at device load and reume. |
| 98 | * Returns 0 for success, errors for failure. |
| 99 | */ |
| 100 | static int tonga_ih_irq_init(struct amdgpu_device *adev) |
| 101 | { |
| 102 | int ret = 0; |
| 103 | int rb_bufsz; |
| 104 | u32 interrupt_cntl, ih_rb_cntl, ih_doorbell_rtpr; |
| 105 | u64 wptr_off; |
| 106 | |
| 107 | /* disable irqs */ |
| 108 | tonga_ih_disable_interrupts(adev); |
| 109 | |
| 110 | /* setup interrupt control */ |
| 111 | WREG32(mmINTERRUPT_CNTL2, adev->dummy_page.addr >> 8); |
| 112 | interrupt_cntl = RREG32(mmINTERRUPT_CNTL); |
| 113 | /* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi |
| 114 | * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN |
| 115 | */ |
| 116 | interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0); |
| 117 | /* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */ |
| 118 | interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0); |
| 119 | WREG32(mmINTERRUPT_CNTL, interrupt_cntl); |
| 120 | |
| 121 | /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ |
| 122 | if (adev->irq.ih.use_bus_addr) |
| 123 | WREG32(mmIH_RB_BASE, adev->irq.ih.rb_dma_addr >> 8); |
| 124 | else |
| 125 | WREG32(mmIH_RB_BASE, adev->irq.ih.gpu_addr >> 8); |
| 126 | |
| 127 | rb_bufsz = order_base_2(adev->irq.ih.ring_size / 4); |
| 128 | ih_rb_cntl = REG_SET_FIELD(0, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); |
| 129 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz); |
| 130 | /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register value is written to memory */ |
| 131 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_WRITEBACK_ENABLE, 1); |
| 132 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0); |
| 133 | |
| 134 | if (adev->irq.msi_enabled) |
| 135 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RPTR_REARM, 1); |
| 136 | |
| 137 | WREG32(mmIH_RB_CNTL, ih_rb_cntl); |
| 138 | |
| 139 | /* set the writeback address whether it's enabled or not */ |
| 140 | if (adev->irq.ih.use_bus_addr) |
| 141 | wptr_off = adev->irq.ih.rb_dma_addr + (adev->irq.ih.wptr_offs * 4); |
| 142 | else |
| 143 | wptr_off = adev->wb.gpu_addr + (adev->irq.ih.wptr_offs * 4); |
| 144 | WREG32(mmIH_RB_WPTR_ADDR_LO, lower_32_bits(wptr_off)); |
| 145 | WREG32(mmIH_RB_WPTR_ADDR_HI, upper_32_bits(wptr_off) & 0xFF); |
| 146 | |
| 147 | /* set rptr, wptr to 0 */ |
| 148 | WREG32(mmIH_RB_RPTR, 0); |
| 149 | WREG32(mmIH_RB_WPTR, 0); |
| 150 | |
| 151 | ih_doorbell_rtpr = RREG32(mmIH_DOORBELL_RPTR); |
| 152 | if (adev->irq.ih.use_doorbell) { |
| 153 | ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR, |
| 154 | OFFSET, adev->irq.ih.doorbell_index); |
| 155 | ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR, |
| 156 | ENABLE, 1); |
| 157 | } else { |
| 158 | ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, IH_DOORBELL_RPTR, |
| 159 | ENABLE, 0); |
| 160 | } |
| 161 | WREG32(mmIH_DOORBELL_RPTR, ih_doorbell_rtpr); |
| 162 | |
| 163 | pci_set_master(adev->pdev); |
| 164 | |
| 165 | /* enable interrupts */ |
| 166 | tonga_ih_enable_interrupts(adev); |
| 167 | |
| 168 | return ret; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * tonga_ih_irq_disable - disable interrupts |
| 173 | * |
| 174 | * @adev: amdgpu_device pointer |
| 175 | * |
| 176 | * Disable interrupts on the hw (VI). |
| 177 | */ |
| 178 | static void tonga_ih_irq_disable(struct amdgpu_device *adev) |
| 179 | { |
| 180 | tonga_ih_disable_interrupts(adev); |
| 181 | |
| 182 | /* Wait and acknowledge irq */ |
| 183 | mdelay(1); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * tonga_ih_get_wptr - get the IH ring buffer wptr |
| 188 | * |
| 189 | * @adev: amdgpu_device pointer |
| 190 | * |
| 191 | * Get the IH ring buffer wptr from either the register |
| 192 | * or the writeback memory buffer (VI). Also check for |
| 193 | * ring buffer overflow and deal with it. |
| 194 | * Used by cz_irq_process(VI). |
| 195 | * Returns the value of the wptr. |
| 196 | */ |
| 197 | static u32 tonga_ih_get_wptr(struct amdgpu_device *adev) |
| 198 | { |
| 199 | u32 wptr, tmp; |
| 200 | |
| 201 | if (adev->irq.ih.use_bus_addr) |
| 202 | wptr = le32_to_cpu(adev->irq.ih.ring[adev->irq.ih.wptr_offs]); |
| 203 | else |
| 204 | wptr = le32_to_cpu(adev->wb.wb[adev->irq.ih.wptr_offs]); |
| 205 | |
| 206 | if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) { |
| 207 | wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); |
| 208 | /* When a ring buffer overflow happen start parsing interrupt |
| 209 | * from the last not overwritten vector (wptr + 16). Hopefully |
| 210 | * this should allow us to catchup. |
| 211 | */ |
| 212 | dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", |
| 213 | wptr, adev->irq.ih.rptr, (wptr + 16) & adev->irq.ih.ptr_mask); |
| 214 | adev->irq.ih.rptr = (wptr + 16) & adev->irq.ih.ptr_mask; |
| 215 | tmp = RREG32(mmIH_RB_CNTL); |
| 216 | tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); |
| 217 | WREG32(mmIH_RB_CNTL, tmp); |
| 218 | } |
| 219 | return (wptr & adev->irq.ih.ptr_mask); |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * tonga_ih_decode_iv - decode an interrupt vector |
| 224 | * |
| 225 | * @adev: amdgpu_device pointer |
| 226 | * |
| 227 | * Decodes the interrupt vector at the current rptr |
| 228 | * position and also advance the position. |
| 229 | */ |
| 230 | static void tonga_ih_decode_iv(struct amdgpu_device *adev, |
| 231 | struct amdgpu_iv_entry *entry) |
| 232 | { |
| 233 | /* wptr/rptr are in bytes! */ |
| 234 | u32 ring_index = adev->irq.ih.rptr >> 2; |
| 235 | uint32_t dw[4]; |
| 236 | |
| 237 | dw[0] = le32_to_cpu(adev->irq.ih.ring[ring_index + 0]); |
| 238 | dw[1] = le32_to_cpu(adev->irq.ih.ring[ring_index + 1]); |
| 239 | dw[2] = le32_to_cpu(adev->irq.ih.ring[ring_index + 2]); |
| 240 | dw[3] = le32_to_cpu(adev->irq.ih.ring[ring_index + 3]); |
| 241 | |
| 242 | entry->src_id = dw[0] & 0xff; |
| 243 | entry->src_data = dw[1] & 0xfffffff; |
| 244 | entry->ring_id = dw[2] & 0xff; |
| 245 | entry->vm_id = (dw[2] >> 8) & 0xff; |
| 246 | entry->pas_id = (dw[2] >> 16) & 0xffff; |
| 247 | |
| 248 | /* wptr/rptr are in bytes! */ |
| 249 | adev->irq.ih.rptr += 16; |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * tonga_ih_set_rptr - set the IH ring buffer rptr |
| 254 | * |
| 255 | * @adev: amdgpu_device pointer |
| 256 | * |
| 257 | * Set the IH ring buffer rptr. |
| 258 | */ |
| 259 | static void tonga_ih_set_rptr(struct amdgpu_device *adev) |
| 260 | { |
| 261 | if (adev->irq.ih.use_doorbell) { |
| 262 | /* XXX check if swapping is necessary on BE */ |
| 263 | if (adev->irq.ih.use_bus_addr) |
| 264 | adev->irq.ih.ring[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr; |
| 265 | else |
| 266 | adev->wb.wb[adev->irq.ih.rptr_offs] = adev->irq.ih.rptr; |
| 267 | WDOORBELL32(adev->irq.ih.doorbell_index, adev->irq.ih.rptr); |
| 268 | } else { |
| 269 | WREG32(mmIH_RB_RPTR, adev->irq.ih.rptr); |
| 270 | } |
| 271 | } |
| 272 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 273 | static int tonga_ih_early_init(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 274 | { |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 275 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 276 | |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 277 | tonga_ih_set_interrupt_funcs(adev); |
| 278 | return 0; |
| 279 | } |
| 280 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 281 | static int tonga_ih_sw_init(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 282 | { |
| 283 | int r; |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 284 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 285 | |
| 286 | r = amdgpu_ih_ring_init(adev, 4 * 1024, true); |
| 287 | if (r) |
| 288 | return r; |
| 289 | |
| 290 | adev->irq.ih.use_doorbell = true; |
| 291 | adev->irq.ih.doorbell_index = AMDGPU_DOORBELL_IH; |
| 292 | |
| 293 | r = amdgpu_irq_init(adev); |
| 294 | |
| 295 | return r; |
| 296 | } |
| 297 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 298 | static int tonga_ih_sw_fini(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 299 | { |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 300 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 301 | |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 302 | amdgpu_irq_fini(adev); |
| 303 | amdgpu_ih_ring_fini(adev); |
| 304 | |
| 305 | return 0; |
| 306 | } |
| 307 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 308 | static int tonga_ih_hw_init(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 309 | { |
| 310 | int r; |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 311 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 312 | |
| 313 | r = tonga_ih_irq_init(adev); |
| 314 | if (r) |
| 315 | return r; |
| 316 | |
| 317 | return 0; |
| 318 | } |
| 319 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 320 | static int tonga_ih_hw_fini(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 321 | { |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 322 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 323 | |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 324 | tonga_ih_irq_disable(adev); |
| 325 | |
| 326 | return 0; |
| 327 | } |
| 328 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 329 | static int tonga_ih_suspend(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 330 | { |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 331 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 332 | |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 333 | return tonga_ih_hw_fini(adev); |
| 334 | } |
| 335 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 336 | static int tonga_ih_resume(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 337 | { |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 338 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 339 | |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 340 | return tonga_ih_hw_init(adev); |
| 341 | } |
| 342 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 343 | static bool tonga_ih_is_idle(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 344 | { |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 345 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 346 | u32 tmp = RREG32(mmSRBM_STATUS); |
| 347 | |
| 348 | if (REG_GET_FIELD(tmp, SRBM_STATUS, IH_BUSY)) |
| 349 | return false; |
| 350 | |
| 351 | return true; |
| 352 | } |
| 353 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 354 | static int tonga_ih_wait_for_idle(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 355 | { |
| 356 | unsigned i; |
| 357 | u32 tmp; |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 358 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 359 | |
| 360 | for (i = 0; i < adev->usec_timeout; i++) { |
| 361 | /* read MC_STATUS */ |
| 362 | tmp = RREG32(mmSRBM_STATUS); |
| 363 | if (!REG_GET_FIELD(tmp, SRBM_STATUS, IH_BUSY)) |
| 364 | return 0; |
| 365 | udelay(1); |
| 366 | } |
| 367 | return -ETIMEDOUT; |
| 368 | } |
| 369 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 370 | static void tonga_ih_print_status(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 371 | { |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 372 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| 373 | |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 374 | dev_info(adev->dev, "TONGA IH registers\n"); |
| 375 | dev_info(adev->dev, " SRBM_STATUS=0x%08X\n", |
| 376 | RREG32(mmSRBM_STATUS)); |
| 377 | dev_info(adev->dev, " SRBM_STATUS2=0x%08X\n", |
| 378 | RREG32(mmSRBM_STATUS2)); |
| 379 | dev_info(adev->dev, " INTERRUPT_CNTL=0x%08X\n", |
| 380 | RREG32(mmINTERRUPT_CNTL)); |
| 381 | dev_info(adev->dev, " INTERRUPT_CNTL2=0x%08X\n", |
| 382 | RREG32(mmINTERRUPT_CNTL2)); |
| 383 | dev_info(adev->dev, " IH_CNTL=0x%08X\n", |
| 384 | RREG32(mmIH_CNTL)); |
| 385 | dev_info(adev->dev, " IH_RB_CNTL=0x%08X\n", |
| 386 | RREG32(mmIH_RB_CNTL)); |
| 387 | dev_info(adev->dev, " IH_RB_BASE=0x%08X\n", |
| 388 | RREG32(mmIH_RB_BASE)); |
| 389 | dev_info(adev->dev, " IH_RB_WPTR_ADDR_LO=0x%08X\n", |
| 390 | RREG32(mmIH_RB_WPTR_ADDR_LO)); |
| 391 | dev_info(adev->dev, " IH_RB_WPTR_ADDR_HI=0x%08X\n", |
| 392 | RREG32(mmIH_RB_WPTR_ADDR_HI)); |
| 393 | dev_info(adev->dev, " IH_RB_RPTR=0x%08X\n", |
| 394 | RREG32(mmIH_RB_RPTR)); |
| 395 | dev_info(adev->dev, " IH_RB_WPTR=0x%08X\n", |
| 396 | RREG32(mmIH_RB_WPTR)); |
| 397 | } |
| 398 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 399 | static int tonga_ih_soft_reset(void *handle) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 400 | { |
| 401 | u32 srbm_soft_reset = 0; |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 402 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 403 | u32 tmp = RREG32(mmSRBM_STATUS); |
| 404 | |
| 405 | if (tmp & SRBM_STATUS__IH_BUSY_MASK) |
| 406 | srbm_soft_reset = REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, |
| 407 | SOFT_RESET_IH, 1); |
| 408 | |
| 409 | if (srbm_soft_reset) { |
| 410 | tonga_ih_print_status(adev); |
| 411 | |
| 412 | tmp = RREG32(mmSRBM_SOFT_RESET); |
| 413 | tmp |= srbm_soft_reset; |
| 414 | dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp); |
| 415 | WREG32(mmSRBM_SOFT_RESET, tmp); |
| 416 | tmp = RREG32(mmSRBM_SOFT_RESET); |
| 417 | |
| 418 | udelay(50); |
| 419 | |
| 420 | tmp &= ~srbm_soft_reset; |
| 421 | WREG32(mmSRBM_SOFT_RESET, tmp); |
| 422 | tmp = RREG32(mmSRBM_SOFT_RESET); |
| 423 | |
| 424 | /* Wait a little for things to settle down */ |
| 425 | udelay(50); |
| 426 | |
| 427 | tonga_ih_print_status(adev); |
| 428 | } |
| 429 | |
| 430 | return 0; |
| 431 | } |
| 432 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 433 | static int tonga_ih_set_clockgating_state(void *handle, |
| 434 | enum amd_clockgating_state state) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 435 | { |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 436 | return 0; |
| 437 | } |
| 438 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 439 | static int tonga_ih_set_powergating_state(void *handle, |
| 440 | enum amd_powergating_state state) |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 441 | { |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 442 | return 0; |
| 443 | } |
| 444 | |
yanyang1 | 5fc3aee | 2015-05-22 14:39:35 -0400 | [diff] [blame] | 445 | const struct amd_ip_funcs tonga_ih_ip_funcs = { |
Alex Deucher | aaa36a976 | 2015-04-20 17:31:14 -0400 | [diff] [blame] | 446 | .early_init = tonga_ih_early_init, |
| 447 | .late_init = NULL, |
| 448 | .sw_init = tonga_ih_sw_init, |
| 449 | .sw_fini = tonga_ih_sw_fini, |
| 450 | .hw_init = tonga_ih_hw_init, |
| 451 | .hw_fini = tonga_ih_hw_fini, |
| 452 | .suspend = tonga_ih_suspend, |
| 453 | .resume = tonga_ih_resume, |
| 454 | .is_idle = tonga_ih_is_idle, |
| 455 | .wait_for_idle = tonga_ih_wait_for_idle, |
| 456 | .soft_reset = tonga_ih_soft_reset, |
| 457 | .print_status = tonga_ih_print_status, |
| 458 | .set_clockgating_state = tonga_ih_set_clockgating_state, |
| 459 | .set_powergating_state = tonga_ih_set_powergating_state, |
| 460 | }; |
| 461 | |
| 462 | static const struct amdgpu_ih_funcs tonga_ih_funcs = { |
| 463 | .get_wptr = tonga_ih_get_wptr, |
| 464 | .decode_iv = tonga_ih_decode_iv, |
| 465 | .set_rptr = tonga_ih_set_rptr |
| 466 | }; |
| 467 | |
| 468 | static void tonga_ih_set_interrupt_funcs(struct amdgpu_device *adev) |
| 469 | { |
| 470 | if (adev->irq.ih_funcs == NULL) |
| 471 | adev->irq.ih_funcs = &tonga_ih_funcs; |
| 472 | } |
| 473 | |