.. | .. |
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20 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
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21 | 21 | * |
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22 | 22 | */ |
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23 | | -#include <drm/drmP.h> |
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| 23 | + |
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| 24 | +#include <linux/pci.h> |
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| 25 | + |
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24 | 26 | #include "amdgpu.h" |
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25 | 27 | #include "amdgpu_ih.h" |
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26 | 28 | #include "vid.h" |
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.. | .. |
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103 | 105 | */ |
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104 | 106 | static int iceland_ih_irq_init(struct amdgpu_device *adev) |
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105 | 107 | { |
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| 108 | + struct amdgpu_ih_ring *ih = &adev->irq.ih; |
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106 | 109 | int rb_bufsz; |
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107 | 110 | u32 interrupt_cntl, ih_cntl, ih_rb_cntl; |
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108 | | - u64 wptr_off; |
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109 | 111 | |
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110 | 112 | /* disable irqs */ |
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111 | 113 | iceland_ih_disable_interrupts(adev); |
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.. | .. |
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133 | 135 | ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_WRITEBACK_ENABLE, 1); |
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134 | 136 | |
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135 | 137 | /* set the writeback address whether it's enabled or not */ |
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136 | | - wptr_off = adev->wb.gpu_addr + (adev->irq.ih.wptr_offs * 4); |
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137 | | - WREG32(mmIH_RB_WPTR_ADDR_LO, lower_32_bits(wptr_off)); |
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138 | | - WREG32(mmIH_RB_WPTR_ADDR_HI, upper_32_bits(wptr_off) & 0xFF); |
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| 138 | + WREG32(mmIH_RB_WPTR_ADDR_LO, lower_32_bits(ih->wptr_addr)); |
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| 139 | + WREG32(mmIH_RB_WPTR_ADDR_HI, upper_32_bits(ih->wptr_addr) & 0xFF); |
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139 | 140 | |
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140 | 141 | WREG32(mmIH_RB_CNTL, ih_rb_cntl); |
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141 | 142 | |
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.. | .. |
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185 | 186 | * Used by cz_irq_process(VI). |
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186 | 187 | * Returns the value of the wptr. |
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187 | 188 | */ |
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188 | | -static u32 iceland_ih_get_wptr(struct amdgpu_device *adev) |
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| 189 | +static u32 iceland_ih_get_wptr(struct amdgpu_device *adev, |
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| 190 | + struct amdgpu_ih_ring *ih) |
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189 | 191 | { |
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190 | 192 | u32 wptr, tmp; |
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191 | 193 | |
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192 | | - wptr = le32_to_cpu(adev->wb.wb[adev->irq.ih.wptr_offs]); |
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| 194 | + wptr = le32_to_cpu(*ih->wptr_cpu); |
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193 | 195 | |
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194 | | - if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) { |
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195 | | - wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); |
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196 | | - /* When a ring buffer overflow happen start parsing interrupt |
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197 | | - * from the last not overwritten vector (wptr + 16). Hopefully |
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198 | | - * this should allow us to catchup. |
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199 | | - */ |
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200 | | - dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", |
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201 | | - wptr, adev->irq.ih.rptr, (wptr + 16) & adev->irq.ih.ptr_mask); |
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202 | | - adev->irq.ih.rptr = (wptr + 16) & adev->irq.ih.ptr_mask; |
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203 | | - tmp = RREG32(mmIH_RB_CNTL); |
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204 | | - tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); |
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205 | | - WREG32(mmIH_RB_CNTL, tmp); |
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206 | | - } |
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207 | | - return (wptr & adev->irq.ih.ptr_mask); |
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208 | | -} |
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| 196 | + if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) |
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| 197 | + goto out; |
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209 | 198 | |
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210 | | -/** |
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211 | | - * iceland_ih_prescreen_iv - prescreen an interrupt vector |
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212 | | - * |
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213 | | - * @adev: amdgpu_device pointer |
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214 | | - * |
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215 | | - * Returns true if the interrupt vector should be further processed. |
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216 | | - */ |
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217 | | -static bool iceland_ih_prescreen_iv(struct amdgpu_device *adev) |
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218 | | -{ |
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219 | | - u32 ring_index = adev->irq.ih.rptr >> 2; |
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220 | | - u16 pasid; |
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| 199 | + /* Double check that the overflow wasn't already cleared. */ |
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| 200 | + wptr = RREG32(mmIH_RB_WPTR); |
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221 | 201 | |
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222 | | - switch (le32_to_cpu(adev->irq.ih.ring[ring_index]) & 0xff) { |
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223 | | - case 146: |
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224 | | - case 147: |
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225 | | - pasid = le32_to_cpu(adev->irq.ih.ring[ring_index + 2]) >> 16; |
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226 | | - if (!pasid || amdgpu_vm_pasid_fault_credit(adev, pasid)) |
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227 | | - return true; |
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228 | | - break; |
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229 | | - default: |
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230 | | - /* Not a VM fault */ |
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231 | | - return true; |
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232 | | - } |
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| 202 | + if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) |
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| 203 | + goto out; |
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233 | 204 | |
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234 | | - adev->irq.ih.rptr += 16; |
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235 | | - return false; |
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| 205 | + wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); |
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| 206 | + /* When a ring buffer overflow happen start parsing interrupt |
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| 207 | + * from the last not overwritten vector (wptr + 16). Hopefully |
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| 208 | + * this should allow us to catchup. |
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| 209 | + */ |
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| 210 | + dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", |
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| 211 | + wptr, ih->rptr, (wptr + 16) & ih->ptr_mask); |
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| 212 | + ih->rptr = (wptr + 16) & ih->ptr_mask; |
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| 213 | + tmp = RREG32(mmIH_RB_CNTL); |
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| 214 | + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); |
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| 215 | + WREG32(mmIH_RB_CNTL, tmp); |
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| 216 | + |
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| 217 | + |
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| 218 | +out: |
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| 219 | + return (wptr & ih->ptr_mask); |
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236 | 220 | } |
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237 | 221 | |
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238 | 222 | /** |
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.. | .. |
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244 | 228 | * position and also advance the position. |
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245 | 229 | */ |
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246 | 230 | static void iceland_ih_decode_iv(struct amdgpu_device *adev, |
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| 231 | + struct amdgpu_ih_ring *ih, |
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247 | 232 | struct amdgpu_iv_entry *entry) |
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248 | 233 | { |
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249 | 234 | /* wptr/rptr are in bytes! */ |
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250 | | - u32 ring_index = adev->irq.ih.rptr >> 2; |
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| 235 | + u32 ring_index = ih->rptr >> 2; |
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251 | 236 | uint32_t dw[4]; |
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252 | 237 | |
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253 | | - dw[0] = le32_to_cpu(adev->irq.ih.ring[ring_index + 0]); |
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254 | | - dw[1] = le32_to_cpu(adev->irq.ih.ring[ring_index + 1]); |
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255 | | - dw[2] = le32_to_cpu(adev->irq.ih.ring[ring_index + 2]); |
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256 | | - dw[3] = le32_to_cpu(adev->irq.ih.ring[ring_index + 3]); |
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| 238 | + dw[0] = le32_to_cpu(ih->ring[ring_index + 0]); |
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| 239 | + dw[1] = le32_to_cpu(ih->ring[ring_index + 1]); |
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| 240 | + dw[2] = le32_to_cpu(ih->ring[ring_index + 2]); |
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| 241 | + dw[3] = le32_to_cpu(ih->ring[ring_index + 3]); |
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257 | 242 | |
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258 | | - entry->client_id = AMDGPU_IH_CLIENTID_LEGACY; |
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| 243 | + entry->client_id = AMDGPU_IRQ_CLIENTID_LEGACY; |
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259 | 244 | entry->src_id = dw[0] & 0xff; |
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260 | 245 | entry->src_data[0] = dw[1] & 0xfffffff; |
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261 | 246 | entry->ring_id = dw[2] & 0xff; |
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.. | .. |
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263 | 248 | entry->pasid = (dw[2] >> 16) & 0xffff; |
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264 | 249 | |
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265 | 250 | /* wptr/rptr are in bytes! */ |
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266 | | - adev->irq.ih.rptr += 16; |
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| 251 | + ih->rptr += 16; |
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267 | 252 | } |
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268 | 253 | |
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269 | 254 | /** |
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.. | .. |
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273 | 258 | * |
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274 | 259 | * Set the IH ring buffer rptr. |
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275 | 260 | */ |
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276 | | -static void iceland_ih_set_rptr(struct amdgpu_device *adev) |
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| 261 | +static void iceland_ih_set_rptr(struct amdgpu_device *adev, |
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| 262 | + struct amdgpu_ih_ring *ih) |
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277 | 263 | { |
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278 | | - WREG32(mmIH_RB_RPTR, adev->irq.ih.rptr); |
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| 264 | + WREG32(mmIH_RB_RPTR, ih->rptr); |
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279 | 265 | } |
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280 | 266 | |
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281 | 267 | static int iceland_ih_early_init(void *handle) |
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.. | .. |
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297 | 283 | int r; |
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298 | 284 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
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299 | 285 | |
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300 | | - r = amdgpu_ih_ring_init(adev, 64 * 1024, false); |
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| 286 | + r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 64 * 1024, false); |
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301 | 287 | if (r) |
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302 | 288 | return r; |
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303 | 289 | |
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.. | .. |
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311 | 297 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
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312 | 298 | |
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313 | 299 | amdgpu_irq_fini(adev); |
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314 | | - amdgpu_ih_ring_fini(adev); |
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| 300 | + amdgpu_ih_ring_fini(adev, &adev->irq.ih); |
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315 | 301 | amdgpu_irq_remove_domain(adev); |
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316 | 302 | |
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317 | 303 | return 0; |
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.. | .. |
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440 | 426 | |
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441 | 427 | static const struct amdgpu_ih_funcs iceland_ih_funcs = { |
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442 | 428 | .get_wptr = iceland_ih_get_wptr, |
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443 | | - .prescreen_iv = iceland_ih_prescreen_iv, |
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444 | 429 | .decode_iv = iceland_ih_decode_iv, |
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445 | 430 | .set_rptr = iceland_ih_set_rptr |
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446 | 431 | }; |
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447 | 432 | |
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448 | 433 | static void iceland_ih_set_interrupt_funcs(struct amdgpu_device *adev) |
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449 | 434 | { |
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450 | | - if (adev->irq.ih_funcs == NULL) |
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451 | | - adev->irq.ih_funcs = &iceland_ih_funcs; |
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| 435 | + adev->irq.ih_funcs = &iceland_ih_funcs; |
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452 | 436 | } |
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453 | 437 | |
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454 | 438 | const struct amdgpu_ip_block_version iceland_ih_ip_block = |
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