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33a732f4 AD |
1 | /* |
2 | * Copyright © 2014 Intel Corporation | |
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 (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Vinit Azad <vinit.azad@intel.com> | |
25 | * Ben Widawsky <ben@bwidawsk.net> | |
26 | * Dave Gordon <david.s.gordon@intel.com> | |
27 | * Alex Dai <yu.dai@intel.com> | |
28 | */ | |
29 | #include <linux/firmware.h> | |
30 | #include "i915_drv.h" | |
31 | #include "intel_guc.h" | |
32 | ||
33 | /** | |
feda33ef | 34 | * DOC: GuC-specific firmware loader |
33a732f4 AD |
35 | * |
36 | * intel_guc: | |
37 | * Top level structure of guc. It handles firmware loading and manages client | |
38 | * pool and doorbells. intel_guc owns a i915_guc_client to replace the legacy | |
39 | * ExecList submission. | |
40 | * | |
41 | * Firmware versioning: | |
42 | * The firmware build process will generate a version header file with major and | |
43 | * minor version defined. The versions are built into CSS header of firmware. | |
44 | * i915 kernel driver set the minimal firmware version required per platform. | |
45 | * The firmware installation package will install (symbolic link) proper version | |
46 | * of firmware. | |
47 | * | |
48 | * GuC address space: | |
49 | * GuC does not allow any gfx GGTT address that falls into range [0, WOPCM_TOP), | |
50 | * which is reserved for Boot ROM, SRAM and WOPCM. Currently this top address is | |
51 | * 512K. In order to exclude 0-512K address space from GGTT, all gfx objects | |
52 | * used by GuC is pinned with PIN_OFFSET_BIAS along with size of WOPCM. | |
53 | * | |
54 | * Firmware log: | |
55 | * Firmware log is enabled by setting i915.guc_log_level to non-negative level. | |
56 | * Log data is printed out via reading debugfs i915_guc_log_dump. Reading from | |
57 | * i915_guc_load_status will print out firmware loading status and scratch | |
58 | * registers value. | |
59 | * | |
60 | */ | |
61 | ||
5e334c19 TU |
62 | #define SKL_FW_MAJOR 6 |
63 | #define SKL_FW_MINOR 1 | |
64 | ||
65 | #define BXT_FW_MAJOR 8 | |
66 | #define BXT_FW_MINOR 7 | |
67 | ||
68 | #define KBL_FW_MAJOR 9 | |
69 | #define KBL_FW_MINOR 14 | |
70 | ||
71 | #define GUC_FW_PATH(platform, major, minor) \ | |
72 | "i915/" __stringify(platform) "_guc_ver" __stringify(major) "_" __stringify(minor) ".bin" | |
73 | ||
74 | #define I915_SKL_GUC_UCODE GUC_FW_PATH(skl, SKL_FW_MAJOR, SKL_FW_MINOR) | |
33a732f4 AD |
75 | MODULE_FIRMWARE(I915_SKL_GUC_UCODE); |
76 | ||
5e334c19 | 77 | #define I915_BXT_GUC_UCODE GUC_FW_PATH(bxt, BXT_FW_MAJOR, BXT_FW_MINOR) |
57bf5c81 NH |
78 | MODULE_FIRMWARE(I915_BXT_GUC_UCODE); |
79 | ||
5e334c19 | 80 | #define I915_KBL_GUC_UCODE GUC_FW_PATH(kbl, KBL_FW_MAJOR, KBL_FW_MINOR) |
ff64cc16 PA |
81 | MODULE_FIRMWARE(I915_KBL_GUC_UCODE); |
82 | ||
33a732f4 AD |
83 | /* User-friendly representation of an enum */ |
84 | const char *intel_guc_fw_status_repr(enum intel_guc_fw_status status) | |
85 | { | |
86 | switch (status) { | |
87 | case GUC_FIRMWARE_FAIL: | |
88 | return "FAIL"; | |
89 | case GUC_FIRMWARE_NONE: | |
90 | return "NONE"; | |
91 | case GUC_FIRMWARE_PENDING: | |
92 | return "PENDING"; | |
93 | case GUC_FIRMWARE_SUCCESS: | |
94 | return "SUCCESS"; | |
95 | default: | |
96 | return "UNKNOWN!"; | |
97 | } | |
98 | }; | |
99 | ||
4df001d3 DG |
100 | static void direct_interrupts_to_host(struct drm_i915_private *dev_priv) |
101 | { | |
e2f80391 | 102 | struct intel_engine_cs *engine; |
b4ac5afc | 103 | int irqs; |
4df001d3 | 104 | |
fa7545a4 | 105 | /* tell all command streamers NOT to forward interrupts or vblank to GuC */ |
4df001d3 DG |
106 | irqs = _MASKED_FIELD(GFX_FORWARD_VBLANK_MASK, GFX_FORWARD_VBLANK_NEVER); |
107 | irqs |= _MASKED_BIT_DISABLE(GFX_INTERRUPT_STEERING); | |
b4ac5afc | 108 | for_each_engine(engine, dev_priv) |
e2f80391 | 109 | I915_WRITE(RING_MODE_GEN7(engine), irqs); |
4df001d3 | 110 | |
4df001d3 DG |
111 | /* route all GT interrupts to the host */ |
112 | I915_WRITE(GUC_BCS_RCS_IER, 0); | |
113 | I915_WRITE(GUC_VCS2_VCS1_IER, 0); | |
114 | I915_WRITE(GUC_WD_VECS_IER, 0); | |
115 | } | |
116 | ||
117 | static void direct_interrupts_to_guc(struct drm_i915_private *dev_priv) | |
118 | { | |
e2f80391 | 119 | struct intel_engine_cs *engine; |
b4ac5afc | 120 | int irqs; |
1800ad25 | 121 | u32 tmp; |
4df001d3 | 122 | |
fa7545a4 DG |
123 | /* tell all command streamers to forward interrupts (but not vblank) to GuC */ |
124 | irqs = _MASKED_BIT_ENABLE(GFX_INTERRUPT_STEERING); | |
b4ac5afc | 125 | for_each_engine(engine, dev_priv) |
e2f80391 | 126 | I915_WRITE(RING_MODE_GEN7(engine), irqs); |
4df001d3 | 127 | |
4df001d3 DG |
128 | /* route USER_INTERRUPT to Host, all others are sent to GuC. */ |
129 | irqs = GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT | | |
130 | GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT; | |
131 | /* These three registers have the same bit definitions */ | |
132 | I915_WRITE(GUC_BCS_RCS_IER, ~irqs); | |
133 | I915_WRITE(GUC_VCS2_VCS1_IER, ~irqs); | |
134 | I915_WRITE(GUC_WD_VECS_IER, ~irqs); | |
1800ad25 SAK |
135 | |
136 | /* | |
b20e3cfe DG |
137 | * The REDIRECT_TO_GUC bit of the PMINTRMSK register directs all |
138 | * (unmasked) PM interrupts to the GuC. All other bits of this | |
139 | * register *disable* generation of a specific interrupt. | |
140 | * | |
141 | * 'pm_intr_keep' indicates bits that are NOT to be set when | |
142 | * writing to the PM interrupt mask register, i.e. interrupts | |
143 | * that must not be disabled. | |
144 | * | |
145 | * If the GuC is handling these interrupts, then we must not let | |
146 | * the PM code disable ANY interrupt that the GuC is expecting. | |
147 | * So for each ENABLED (0) bit in this register, we must SET the | |
148 | * bit in pm_intr_keep so that it's left enabled for the GuC. | |
149 | * | |
150 | * OTOH the REDIRECT_TO_GUC bit is initially SET in pm_intr_keep | |
151 | * (so interrupts go to the DISPLAY unit at first); but here we | |
152 | * need to CLEAR that bit, which will result in the register bit | |
153 | * being left SET! | |
154 | */ | |
1800ad25 | 155 | tmp = I915_READ(GEN6_PMINTRMSK); |
b20e3cfe DG |
156 | if (tmp & GEN8_PMINTR_REDIRECT_TO_GUC) { |
157 | dev_priv->rps.pm_intr_keep |= ~tmp; | |
158 | dev_priv->rps.pm_intr_keep &= ~GEN8_PMINTR_REDIRECT_TO_GUC; | |
1800ad25 | 159 | } |
4df001d3 DG |
160 | } |
161 | ||
33a732f4 AD |
162 | static u32 get_gttype(struct drm_i915_private *dev_priv) |
163 | { | |
164 | /* XXX: GT type based on PCI device ID? field seems unused by fw */ | |
165 | return 0; | |
166 | } | |
167 | ||
168 | static u32 get_core_family(struct drm_i915_private *dev_priv) | |
169 | { | |
fc32de93 DG |
170 | u32 gen = INTEL_GEN(dev_priv); |
171 | ||
172 | switch (gen) { | |
33a732f4 AD |
173 | case 9: |
174 | return GFXCORE_FAMILY_GEN9; | |
175 | ||
176 | default: | |
fc32de93 | 177 | WARN(1, "GEN%d does not support GuC operation!\n", gen); |
33a732f4 AD |
178 | return GFXCORE_FAMILY_UNKNOWN; |
179 | } | |
180 | } | |
181 | ||
182 | static void set_guc_init_params(struct drm_i915_private *dev_priv) | |
183 | { | |
184 | struct intel_guc *guc = &dev_priv->guc; | |
185 | u32 params[GUC_CTL_MAX_DWORDS]; | |
186 | int i; | |
187 | ||
188 | memset(¶ms, 0, sizeof(params)); | |
189 | ||
190 | params[GUC_CTL_DEVICE_INFO] |= | |
191 | (get_gttype(dev_priv) << GUC_CTL_GTTYPE_SHIFT) | | |
192 | (get_core_family(dev_priv) << GUC_CTL_COREFAMILY_SHIFT); | |
193 | ||
194 | /* | |
195 | * GuC ARAT increment is 10 ns. GuC default scheduler quantum is one | |
196 | * second. This ARAR is calculated by: | |
197 | * Scheduler-Quantum-in-ns / ARAT-increment-in-ns = 1000000000 / 10 | |
198 | */ | |
199 | params[GUC_CTL_ARAT_HIGH] = 0; | |
200 | params[GUC_CTL_ARAT_LOW] = 100000000; | |
201 | ||
202 | params[GUC_CTL_WA] |= GUC_CTL_WA_UK_BY_DRIVER; | |
203 | ||
204 | params[GUC_CTL_FEATURE] |= GUC_CTL_DISABLE_SCHEDULER | | |
205 | GUC_CTL_VCS2_ENABLED; | |
206 | ||
207 | if (i915.guc_log_level >= 0) { | |
208 | params[GUC_CTL_LOG_PARAMS] = guc->log_flags; | |
209 | params[GUC_CTL_DEBUG] = | |
210 | i915.guc_log_level << GUC_LOG_VERBOSITY_SHIFT; | |
211 | } | |
212 | ||
8b797af1 | 213 | if (guc->ads_vma) { |
bde13ebd | 214 | u32 ads = i915_ggtt_offset(guc->ads_vma) >> PAGE_SHIFT; |
b6a5cd7e AD |
215 | params[GUC_CTL_DEBUG] |= ads << GUC_ADS_ADDR_SHIFT; |
216 | params[GUC_CTL_DEBUG] |= GUC_ADS_ENABLED; | |
217 | } | |
218 | ||
bac427f8 AD |
219 | /* If GuC submission is enabled, set up additional parameters here */ |
220 | if (i915.enable_guc_submission) { | |
bde13ebd | 221 | u32 pgs = i915_ggtt_offset(dev_priv->guc.ctx_pool_vma); |
bac427f8 AD |
222 | u32 ctx_in_16 = GUC_MAX_GPU_CONTEXTS / 16; |
223 | ||
224 | pgs >>= PAGE_SHIFT; | |
225 | params[GUC_CTL_CTXINFO] = (pgs << GUC_CTL_BASE_ADDR_SHIFT) | | |
226 | (ctx_in_16 << GUC_CTL_CTXNUM_IN16_SHIFT); | |
227 | ||
228 | params[GUC_CTL_FEATURE] |= GUC_CTL_KERNEL_SUBMISSIONS; | |
229 | ||
230 | /* Unmask this bit to enable the GuC's internal scheduler */ | |
231 | params[GUC_CTL_FEATURE] &= ~GUC_CTL_DISABLE_SCHEDULER; | |
232 | } | |
233 | ||
33a732f4 AD |
234 | I915_WRITE(SOFT_SCRATCH(0), 0); |
235 | ||
236 | for (i = 0; i < GUC_CTL_MAX_DWORDS; i++) | |
237 | I915_WRITE(SOFT_SCRATCH(1 + i), params[i]); | |
238 | } | |
239 | ||
240 | /* | |
241 | * Read the GuC status register (GUC_STATUS) and store it in the | |
242 | * specified location; then return a boolean indicating whether | |
243 | * the value matches either of two values representing completion | |
244 | * of the GuC boot process. | |
245 | * | |
36894e8b | 246 | * This is used for polling the GuC status in a wait_for() |
33a732f4 AD |
247 | * loop below. |
248 | */ | |
249 | static inline bool guc_ucode_response(struct drm_i915_private *dev_priv, | |
250 | u32 *status) | |
251 | { | |
252 | u32 val = I915_READ(GUC_STATUS); | |
0d44d3fa | 253 | u32 uk_val = val & GS_UKERNEL_MASK; |
33a732f4 | 254 | *status = val; |
0d44d3fa AD |
255 | return (uk_val == GS_UKERNEL_READY || |
256 | ((val & GS_MIA_CORE_STATE) && uk_val == GS_UKERNEL_LAPIC_DONE)); | |
33a732f4 AD |
257 | } |
258 | ||
259 | /* | |
260 | * Transfer the firmware image to RAM for execution by the microcontroller. | |
261 | * | |
33a732f4 AD |
262 | * Architecturally, the DMA engine is bidirectional, and can potentially even |
263 | * transfer between GTT locations. This functionality is left out of the API | |
264 | * for now as there is no need for it. | |
265 | * | |
266 | * Note that GuC needs the CSS header plus uKernel code to be copied by the | |
267 | * DMA engine in one operation, whereas the RSA signature is loaded via MMIO. | |
268 | */ | |
058d88c4 CW |
269 | static int guc_ucode_xfer_dma(struct drm_i915_private *dev_priv, |
270 | struct i915_vma *vma) | |
33a732f4 AD |
271 | { |
272 | struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw; | |
33a732f4 | 273 | unsigned long offset; |
058d88c4 | 274 | struct sg_table *sg = vma->pages; |
feda33ef | 275 | u32 status, rsa[UOS_RSA_SCRATCH_MAX_COUNT]; |
33a732f4 AD |
276 | int i, ret = 0; |
277 | ||
feda33ef AD |
278 | /* where RSA signature starts */ |
279 | offset = guc_fw->rsa_offset; | |
33a732f4 AD |
280 | |
281 | /* Copy RSA signature from the fw image to HW for verification */ | |
feda33ef AD |
282 | sg_pcopy_to_buffer(sg->sgl, sg->nents, rsa, sizeof(rsa), offset); |
283 | for (i = 0; i < UOS_RSA_SCRATCH_MAX_COUNT; i++) | |
ab9cc558 | 284 | I915_WRITE(UOS_RSA_SCRATCH(i), rsa[i]); |
33a732f4 | 285 | |
feda33ef AD |
286 | /* The header plus uCode will be copied to WOPCM via DMA, excluding any |
287 | * other components */ | |
288 | I915_WRITE(DMA_COPY_SIZE, guc_fw->header_size + guc_fw->ucode_size); | |
289 | ||
33a732f4 | 290 | /* Set the source address for the new blob */ |
bde13ebd | 291 | offset = i915_ggtt_offset(vma) + guc_fw->header_offset; |
33a732f4 AD |
292 | I915_WRITE(DMA_ADDR_0_LOW, lower_32_bits(offset)); |
293 | I915_WRITE(DMA_ADDR_0_HIGH, upper_32_bits(offset) & 0xFFFF); | |
294 | ||
295 | /* | |
296 | * Set the DMA destination. Current uCode expects the code to be | |
297 | * loaded at 8k; locations below this are used for the stack. | |
298 | */ | |
299 | I915_WRITE(DMA_ADDR_1_LOW, 0x2000); | |
300 | I915_WRITE(DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM); | |
301 | ||
302 | /* Finally start the DMA */ | |
303 | I915_WRITE(DMA_CTRL, _MASKED_BIT_ENABLE(UOS_MOVE | START_DMA)); | |
304 | ||
305 | /* | |
36894e8b | 306 | * Wait for the DMA to complete & the GuC to start up. |
33a732f4 AD |
307 | * NB: Docs recommend not using the interrupt for completion. |
308 | * Measurements indicate this should take no more than 20ms, so a | |
309 | * timeout here indicates that the GuC has failed and is unusable. | |
310 | * (Higher levels of the driver will attempt to fall back to | |
311 | * execlist mode if this happens.) | |
312 | */ | |
36894e8b | 313 | ret = wait_for(guc_ucode_response(dev_priv, &status), 100); |
33a732f4 AD |
314 | |
315 | DRM_DEBUG_DRIVER("DMA status 0x%x, GuC status 0x%x\n", | |
316 | I915_READ(DMA_CTRL), status); | |
317 | ||
318 | if ((status & GS_BOOTROM_MASK) == GS_BOOTROM_RSA_FAILED) { | |
319 | DRM_ERROR("GuC firmware signature verification failed\n"); | |
320 | ret = -ENOEXEC; | |
321 | } | |
322 | ||
323 | DRM_DEBUG_DRIVER("returning %d\n", ret); | |
324 | ||
325 | return ret; | |
326 | } | |
327 | ||
74aa156b PA |
328 | static u32 guc_wopcm_size(struct drm_i915_private *dev_priv) |
329 | { | |
330 | u32 wopcm_size = GUC_WOPCM_TOP; | |
331 | ||
332 | /* On BXT, the top of WOPCM is reserved for RC6 context */ | |
333 | if (IS_BROXTON(dev_priv)) | |
334 | wopcm_size -= BXT_GUC_WOPCM_RC6_RESERVED; | |
335 | ||
336 | return wopcm_size; | |
337 | } | |
338 | ||
33a732f4 AD |
339 | /* |
340 | * Load the GuC firmware blob into the MinuteIA. | |
341 | */ | |
342 | static int guc_ucode_xfer(struct drm_i915_private *dev_priv) | |
343 | { | |
344 | struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw; | |
91c8a326 | 345 | struct drm_device *dev = &dev_priv->drm; |
058d88c4 | 346 | struct i915_vma *vma; |
33a732f4 AD |
347 | int ret; |
348 | ||
349 | ret = i915_gem_object_set_to_gtt_domain(guc_fw->guc_fw_obj, false); | |
350 | if (ret) { | |
351 | DRM_DEBUG_DRIVER("set-domain failed %d\n", ret); | |
352 | return ret; | |
353 | } | |
354 | ||
058d88c4 CW |
355 | vma = i915_gem_object_ggtt_pin(guc_fw->guc_fw_obj, NULL, 0, 0, 0); |
356 | if (IS_ERR(vma)) { | |
357 | DRM_DEBUG_DRIVER("pin failed %d\n", (int)PTR_ERR(vma)); | |
358 | return PTR_ERR(vma); | |
33a732f4 AD |
359 | } |
360 | ||
361 | /* Invalidate GuC TLB to let GuC take the latest updates to GTT. */ | |
362 | I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE); | |
363 | ||
364 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); | |
365 | ||
366 | /* init WOPCM */ | |
74aa156b | 367 | I915_WRITE(GUC_WOPCM_SIZE, guc_wopcm_size(dev_priv)); |
33a732f4 AD |
368 | I915_WRITE(DMA_GUC_WOPCM_OFFSET, GUC_WOPCM_OFFSET_VALUE); |
369 | ||
370 | /* Enable MIA caching. GuC clock gating is disabled. */ | |
371 | I915_WRITE(GUC_SHIM_CONTROL, GUC_SHIM_CONTROL_VALUE); | |
372 | ||
b970b486 | 373 | /* WaDisableMinuteIaClockGating:skl,bxt */ |
e87a005d | 374 | if (IS_SKL_REVID(dev, 0, SKL_REVID_B0) || |
cbdc12a9 | 375 | IS_BXT_REVID(dev, 0, BXT_REVID_A1)) { |
b970b486 NH |
376 | I915_WRITE(GUC_SHIM_CONTROL, (I915_READ(GUC_SHIM_CONTROL) & |
377 | ~GUC_ENABLE_MIA_CLOCK_GATING)); | |
378 | } | |
379 | ||
33a732f4 | 380 | /* WaC6DisallowByGfxPause*/ |
65fe29ee TG |
381 | if (IS_SKL_REVID(dev, 0, SKL_REVID_C0) || |
382 | IS_BXT_REVID(dev, 0, BXT_REVID_B0)) | |
383 | I915_WRITE(GEN6_GFXPAUSE, 0x30FFF); | |
33a732f4 AD |
384 | |
385 | if (IS_BROXTON(dev)) | |
386 | I915_WRITE(GEN9LP_GT_PM_CONFIG, GT_DOORBELL_ENABLE); | |
387 | else | |
388 | I915_WRITE(GEN9_GT_PM_CONFIG, GT_DOORBELL_ENABLE); | |
389 | ||
390 | if (IS_GEN9(dev)) { | |
391 | /* DOP Clock Gating Enable for GuC clocks */ | |
392 | I915_WRITE(GEN7_MISCCPCTL, (GEN8_DOP_CLOCK_GATE_GUC_ENABLE | | |
393 | I915_READ(GEN7_MISCCPCTL))); | |
394 | ||
395 | /* allows for 5us before GT can go to RC6 */ | |
396 | I915_WRITE(GUC_ARAT_C6DIS, 0x1FF); | |
397 | } | |
398 | ||
399 | set_guc_init_params(dev_priv); | |
400 | ||
058d88c4 | 401 | ret = guc_ucode_xfer_dma(dev_priv, vma); |
33a732f4 AD |
402 | |
403 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); | |
404 | ||
405 | /* | |
406 | * We keep the object pages for reuse during resume. But we can unpin it | |
407 | * now that DMA has completed, so it doesn't continue to take up space. | |
408 | */ | |
058d88c4 | 409 | i915_vma_unpin(vma); |
33a732f4 AD |
410 | |
411 | return ret; | |
412 | } | |
413 | ||
6b332fa2 AS |
414 | static int i915_reset_guc(struct drm_i915_private *dev_priv) |
415 | { | |
416 | int ret; | |
417 | u32 guc_status; | |
418 | ||
419 | ret = intel_guc_reset(dev_priv); | |
420 | if (ret) { | |
421 | DRM_ERROR("GuC reset failed, ret = %d\n", ret); | |
422 | return ret; | |
423 | } | |
424 | ||
425 | guc_status = I915_READ(GUC_STATUS); | |
426 | WARN(!(guc_status & GS_MIA_IN_RESET), | |
427 | "GuC status: 0x%x, MIA core expected to be in reset\n", guc_status); | |
428 | ||
429 | return ret; | |
430 | } | |
431 | ||
33a732f4 | 432 | /** |
f09d675f | 433 | * intel_guc_setup() - finish preparing the GuC for activity |
33a732f4 AD |
434 | * @dev: drm device |
435 | * | |
436 | * Called from gem_init_hw() during driver loading and also after a GPU reset. | |
437 | * | |
f09d675f | 438 | * The main action required here it to load the GuC uCode into the device. |
33a732f4 | 439 | * The firmware image should have already been fetched into memory by the |
f09d675f DG |
440 | * earlier call to intel_guc_init(), so here we need only check that worked, |
441 | * and then transfer the image to the h/w. | |
33a732f4 AD |
442 | * |
443 | * Return: non-zero code on error | |
444 | */ | |
f09d675f | 445 | int intel_guc_setup(struct drm_device *dev) |
33a732f4 | 446 | { |
fac5e23e | 447 | struct drm_i915_private *dev_priv = to_i915(dev); |
33a732f4 | 448 | struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw; |
fce91f22 DG |
449 | const char *fw_path = guc_fw->guc_fw_path; |
450 | int retries, ret, err; | |
33a732f4 | 451 | |
fce91f22 DG |
452 | DRM_DEBUG_DRIVER("GuC fw status: path %s, fetch %s, load %s\n", |
453 | fw_path, | |
33a732f4 AD |
454 | intel_guc_fw_status_repr(guc_fw->guc_fw_fetch_status), |
455 | intel_guc_fw_status_repr(guc_fw->guc_fw_load_status)); | |
456 | ||
fce91f22 DG |
457 | /* Loading forbidden, or no firmware to load? */ |
458 | if (!i915.enable_guc_loading) { | |
459 | err = 0; | |
460 | goto fail; | |
e556f7c1 DG |
461 | } else if (fw_path == NULL) { |
462 | /* Device is known to have no uCode (e.g. no GuC) */ | |
463 | err = -ENXIO; | |
464 | goto fail; | |
465 | } else if (*fw_path == '\0') { | |
466 | /* Device has a GuC but we don't know what f/w to load? */ | |
fc32de93 | 467 | WARN(1, "No GuC firmware known for this platform!\n"); |
fce91f22 DG |
468 | err = -ENODEV; |
469 | goto fail; | |
470 | } | |
33a732f4 | 471 | |
fce91f22 DG |
472 | /* Fetch failed, or already fetched but failed to load? */ |
473 | if (guc_fw->guc_fw_fetch_status != GUC_FIRMWARE_SUCCESS) { | |
33a732f4 AD |
474 | err = -EIO; |
475 | goto fail; | |
fce91f22 DG |
476 | } else if (guc_fw->guc_fw_load_status == GUC_FIRMWARE_FAIL) { |
477 | err = -ENOEXEC; | |
33a732f4 | 478 | goto fail; |
33a732f4 AD |
479 | } |
480 | ||
fce91f22 DG |
481 | direct_interrupts_to_host(dev_priv); |
482 | ||
483 | guc_fw->guc_fw_load_status = GUC_FIRMWARE_PENDING; | |
484 | ||
485 | DRM_DEBUG_DRIVER("GuC fw status: fetch %s, load %s\n", | |
486 | intel_guc_fw_status_repr(guc_fw->guc_fw_fetch_status), | |
487 | intel_guc_fw_status_repr(guc_fw->guc_fw_load_status)); | |
488 | ||
beffa517 | 489 | err = i915_guc_submission_init(dev_priv); |
bac427f8 AD |
490 | if (err) |
491 | goto fail; | |
492 | ||
6b332fa2 AS |
493 | /* |
494 | * WaEnableuKernelHeaderValidFix:skl,bxt | |
495 | * For BXT, this is only upto B0 but below WA is required for later | |
496 | * steppings also so this is extended as well. | |
497 | */ | |
498 | /* WaEnableGuCBootHashCheckNotSet:skl,bxt */ | |
d761701c DG |
499 | for (retries = 3; ; ) { |
500 | /* | |
501 | * Always reset the GuC just before (re)loading, so | |
502 | * that the state and timing are fairly predictable | |
503 | */ | |
504 | err = i915_reset_guc(dev_priv); | |
fc32de93 | 505 | if (err) |
6b332fa2 | 506 | goto fail; |
d761701c DG |
507 | |
508 | err = guc_ucode_xfer(dev_priv); | |
509 | if (!err) | |
510 | break; | |
511 | ||
512 | if (--retries == 0) | |
513 | goto fail; | |
514 | ||
fce91f22 DG |
515 | DRM_INFO("GuC fw load failed: %d; will reset and " |
516 | "retry %d more time(s)\n", err, retries); | |
6b332fa2 | 517 | } |
33a732f4 AD |
518 | |
519 | guc_fw->guc_fw_load_status = GUC_FIRMWARE_SUCCESS; | |
520 | ||
521 | DRM_DEBUG_DRIVER("GuC fw status: fetch %s, load %s\n", | |
522 | intel_guc_fw_status_repr(guc_fw->guc_fw_fetch_status), | |
523 | intel_guc_fw_status_repr(guc_fw->guc_fw_load_status)); | |
524 | ||
44a28b1d | 525 | if (i915.enable_guc_submission) { |
beffa517 | 526 | err = i915_guc_submission_enable(dev_priv); |
44a28b1d DG |
527 | if (err) |
528 | goto fail; | |
4df001d3 | 529 | direct_interrupts_to_guc(dev_priv); |
44a28b1d DG |
530 | } |
531 | ||
33a732f4 AD |
532 | return 0; |
533 | ||
534 | fail: | |
535 | if (guc_fw->guc_fw_load_status == GUC_FIRMWARE_PENDING) | |
536 | guc_fw->guc_fw_load_status = GUC_FIRMWARE_FAIL; | |
537 | ||
4df001d3 | 538 | direct_interrupts_to_host(dev_priv); |
beffa517 DG |
539 | i915_guc_submission_disable(dev_priv); |
540 | i915_guc_submission_fini(dev_priv); | |
44a28b1d | 541 | |
fce91f22 DG |
542 | /* |
543 | * We've failed to load the firmware :( | |
544 | * | |
545 | * Decide whether to disable GuC submission and fall back to | |
546 | * execlist mode, and whether to hide the error by returning | |
547 | * zero or to return -EIO, which the caller will treat as a | |
548 | * nonfatal error (i.e. it doesn't prevent driver load, but | |
549 | * marks the GPU as wedged until reset). | |
550 | */ | |
551 | if (i915.enable_guc_loading > 1) { | |
552 | ret = -EIO; | |
553 | } else if (i915.enable_guc_submission > 1) { | |
554 | ret = -EIO; | |
555 | } else { | |
556 | ret = 0; | |
557 | } | |
558 | ||
4e50f796 DG |
559 | if (err == 0 && !HAS_GUC_UCODE(dev)) |
560 | ; /* Don't mention the GuC! */ | |
561 | else if (err == 0) | |
fce91f22 | 562 | DRM_INFO("GuC firmware load skipped\n"); |
4e50f796 | 563 | else if (ret != -EIO) |
fc32de93 | 564 | DRM_NOTE("GuC firmware load failed: %d\n", err); |
4e50f796 | 565 | else |
fc32de93 | 566 | DRM_WARN("GuC firmware load failed: %d\n", err); |
fce91f22 DG |
567 | |
568 | if (i915.enable_guc_submission) { | |
569 | if (fw_path == NULL) | |
570 | DRM_INFO("GuC submission without firmware not supported\n"); | |
571 | if (ret == 0) | |
fc32de93 | 572 | DRM_NOTE("Falling back from GuC submission to execlist mode\n"); |
fce91f22 DG |
573 | else |
574 | DRM_ERROR("GuC init failed: %d\n", ret); | |
575 | } | |
576 | i915.enable_guc_submission = 0; | |
577 | ||
578 | return ret; | |
33a732f4 AD |
579 | } |
580 | ||
581 | static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw) | |
582 | { | |
52a05c30 | 583 | struct pci_dev *pdev = dev->pdev; |
33a732f4 AD |
584 | struct drm_i915_gem_object *obj; |
585 | const struct firmware *fw; | |
feda33ef AD |
586 | struct guc_css_header *css; |
587 | size_t size; | |
33a732f4 AD |
588 | int err; |
589 | ||
590 | DRM_DEBUG_DRIVER("before requesting firmware: GuC fw fetch status %s\n", | |
591 | intel_guc_fw_status_repr(guc_fw->guc_fw_fetch_status)); | |
592 | ||
52a05c30 | 593 | err = request_firmware(&fw, guc_fw->guc_fw_path, &pdev->dev); |
33a732f4 AD |
594 | if (err) |
595 | goto fail; | |
596 | if (!fw) | |
597 | goto fail; | |
598 | ||
599 | DRM_DEBUG_DRIVER("fetch GuC fw from %s succeeded, fw %p\n", | |
600 | guc_fw->guc_fw_path, fw); | |
33a732f4 | 601 | |
feda33ef AD |
602 | /* Check the size of the blob before examining buffer contents */ |
603 | if (fw->size < sizeof(struct guc_css_header)) { | |
fc32de93 | 604 | DRM_NOTE("Firmware header is missing\n"); |
33a732f4 | 605 | goto fail; |
feda33ef AD |
606 | } |
607 | ||
608 | css = (struct guc_css_header *)fw->data; | |
609 | ||
610 | /* Firmware bits always start from header */ | |
611 | guc_fw->header_offset = 0; | |
612 | guc_fw->header_size = (css->header_size_dw - css->modulus_size_dw - | |
613 | css->key_size_dw - css->exponent_size_dw) * sizeof(u32); | |
614 | ||
615 | if (guc_fw->header_size != sizeof(struct guc_css_header)) { | |
fc32de93 | 616 | DRM_NOTE("CSS header definition mismatch\n"); |
feda33ef AD |
617 | goto fail; |
618 | } | |
619 | ||
620 | /* then, uCode */ | |
621 | guc_fw->ucode_offset = guc_fw->header_offset + guc_fw->header_size; | |
622 | guc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32); | |
623 | ||
624 | /* now RSA */ | |
625 | if (css->key_size_dw != UOS_RSA_SCRATCH_MAX_COUNT) { | |
fc32de93 | 626 | DRM_NOTE("RSA key size is bad\n"); |
feda33ef AD |
627 | goto fail; |
628 | } | |
629 | guc_fw->rsa_offset = guc_fw->ucode_offset + guc_fw->ucode_size; | |
630 | guc_fw->rsa_size = css->key_size_dw * sizeof(u32); | |
631 | ||
632 | /* At least, it should have header, uCode and RSA. Size of all three. */ | |
633 | size = guc_fw->header_size + guc_fw->ucode_size + guc_fw->rsa_size; | |
634 | if (fw->size < size) { | |
fc32de93 | 635 | DRM_NOTE("Missing firmware components\n"); |
feda33ef AD |
636 | goto fail; |
637 | } | |
638 | ||
639 | /* Header and uCode will be loaded to WOPCM. Size of the two. */ | |
640 | size = guc_fw->header_size + guc_fw->ucode_size; | |
f19ec8cb | 641 | if (size > guc_wopcm_size(to_i915(dev))) { |
fc32de93 | 642 | DRM_NOTE("Firmware is too large to fit in WOPCM\n"); |
feda33ef AD |
643 | goto fail; |
644 | } | |
33a732f4 AD |
645 | |
646 | /* | |
647 | * The GuC firmware image has the version number embedded at a well-known | |
648 | * offset within the firmware blob; note that major / minor version are | |
649 | * TWO bytes each (i.e. u16), although all pointers and offsets are defined | |
650 | * in terms of bytes (u8). | |
651 | */ | |
feda33ef AD |
652 | guc_fw->guc_fw_major_found = css->guc_sw_version >> 16; |
653 | guc_fw->guc_fw_minor_found = css->guc_sw_version & 0xFFFF; | |
33a732f4 AD |
654 | |
655 | if (guc_fw->guc_fw_major_found != guc_fw->guc_fw_major_wanted || | |
656 | guc_fw->guc_fw_minor_found < guc_fw->guc_fw_minor_wanted) { | |
fc32de93 | 657 | DRM_NOTE("GuC firmware version %d.%d, required %d.%d\n", |
33a732f4 AD |
658 | guc_fw->guc_fw_major_found, guc_fw->guc_fw_minor_found, |
659 | guc_fw->guc_fw_major_wanted, guc_fw->guc_fw_minor_wanted); | |
660 | err = -ENOEXEC; | |
661 | goto fail; | |
662 | } | |
663 | ||
664 | DRM_DEBUG_DRIVER("firmware version %d.%d OK (minimum %d.%d)\n", | |
665 | guc_fw->guc_fw_major_found, guc_fw->guc_fw_minor_found, | |
666 | guc_fw->guc_fw_major_wanted, guc_fw->guc_fw_minor_wanted); | |
667 | ||
bf248ca1 | 668 | mutex_lock(&dev->struct_mutex); |
33a732f4 | 669 | obj = i915_gem_object_create_from_data(dev, fw->data, fw->size); |
bf248ca1 | 670 | mutex_unlock(&dev->struct_mutex); |
33a732f4 AD |
671 | if (IS_ERR_OR_NULL(obj)) { |
672 | err = obj ? PTR_ERR(obj) : -ENOMEM; | |
673 | goto fail; | |
674 | } | |
675 | ||
676 | guc_fw->guc_fw_obj = obj; | |
677 | guc_fw->guc_fw_size = fw->size; | |
678 | ||
679 | DRM_DEBUG_DRIVER("GuC fw fetch status SUCCESS, obj %p\n", | |
680 | guc_fw->guc_fw_obj); | |
681 | ||
682 | release_firmware(fw); | |
683 | guc_fw->guc_fw_fetch_status = GUC_FIRMWARE_SUCCESS; | |
684 | return; | |
685 | ||
686 | fail: | |
fc32de93 DG |
687 | DRM_WARN("Failed to fetch valid GuC firmware from %s (error %d)\n", |
688 | guc_fw->guc_fw_path, err); | |
33a732f4 AD |
689 | DRM_DEBUG_DRIVER("GuC fw fetch status FAIL; err %d, fw %p, obj %p\n", |
690 | err, fw, guc_fw->guc_fw_obj); | |
33a732f4 | 691 | |
a9d8adad | 692 | mutex_lock(&dev->struct_mutex); |
33a732f4 AD |
693 | obj = guc_fw->guc_fw_obj; |
694 | if (obj) | |
f8c417cd | 695 | i915_gem_object_put(obj); |
33a732f4 | 696 | guc_fw->guc_fw_obj = NULL; |
a9d8adad | 697 | mutex_unlock(&dev->struct_mutex); |
33a732f4 AD |
698 | |
699 | release_firmware(fw); /* OK even if fw is NULL */ | |
700 | guc_fw->guc_fw_fetch_status = GUC_FIRMWARE_FAIL; | |
701 | } | |
702 | ||
703 | /** | |
f09d675f | 704 | * intel_guc_init() - define parameters and fetch firmware |
33a732f4 AD |
705 | * @dev: drm device |
706 | * | |
707 | * Called early during driver load, but after GEM is initialised. | |
33a732f4 AD |
708 | * |
709 | * The firmware will be transferred to the GuC's memory later, | |
f09d675f | 710 | * when intel_guc_setup() is called. |
33a732f4 | 711 | */ |
f09d675f | 712 | void intel_guc_init(struct drm_device *dev) |
33a732f4 | 713 | { |
fac5e23e | 714 | struct drm_i915_private *dev_priv = to_i915(dev); |
33a732f4 AD |
715 | struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw; |
716 | const char *fw_path; | |
717 | ||
fce91f22 DG |
718 | /* A negative value means "use platform default" */ |
719 | if (i915.enable_guc_loading < 0) | |
720 | i915.enable_guc_loading = HAS_GUC_UCODE(dev); | |
721 | if (i915.enable_guc_submission < 0) | |
722 | i915.enable_guc_submission = HAS_GUC_SCHED(dev); | |
33a732f4 AD |
723 | |
724 | if (!HAS_GUC_UCODE(dev)) { | |
725 | fw_path = NULL; | |
726 | } else if (IS_SKYLAKE(dev)) { | |
727 | fw_path = I915_SKL_GUC_UCODE; | |
5e334c19 TU |
728 | guc_fw->guc_fw_major_wanted = SKL_FW_MAJOR; |
729 | guc_fw->guc_fw_minor_wanted = SKL_FW_MINOR; | |
57bf5c81 NH |
730 | } else if (IS_BROXTON(dev)) { |
731 | fw_path = I915_BXT_GUC_UCODE; | |
5e334c19 TU |
732 | guc_fw->guc_fw_major_wanted = BXT_FW_MAJOR; |
733 | guc_fw->guc_fw_minor_wanted = BXT_FW_MINOR; | |
ff64cc16 PA |
734 | } else if (IS_KABYLAKE(dev)) { |
735 | fw_path = I915_KBL_GUC_UCODE; | |
5e334c19 TU |
736 | guc_fw->guc_fw_major_wanted = KBL_FW_MAJOR; |
737 | guc_fw->guc_fw_minor_wanted = KBL_FW_MINOR; | |
33a732f4 | 738 | } else { |
33a732f4 AD |
739 | fw_path = ""; /* unknown device */ |
740 | } | |
741 | ||
742 | guc_fw->guc_dev = dev; | |
743 | guc_fw->guc_fw_path = fw_path; | |
744 | guc_fw->guc_fw_fetch_status = GUC_FIRMWARE_NONE; | |
745 | guc_fw->guc_fw_load_status = GUC_FIRMWARE_NONE; | |
746 | ||
fce91f22 DG |
747 | /* Early (and silent) return if GuC loading is disabled */ |
748 | if (!i915.enable_guc_loading) | |
749 | return; | |
33a732f4 AD |
750 | if (fw_path == NULL) |
751 | return; | |
fce91f22 | 752 | if (*fw_path == '\0') |
33a732f4 | 753 | return; |
33a732f4 AD |
754 | |
755 | guc_fw->guc_fw_fetch_status = GUC_FIRMWARE_PENDING; | |
756 | DRM_DEBUG_DRIVER("GuC firmware pending, path %s\n", fw_path); | |
757 | guc_fw_fetch(dev, guc_fw); | |
758 | /* status must now be FAIL or SUCCESS */ | |
759 | } | |
760 | ||
761 | /** | |
f09d675f | 762 | * intel_guc_fini() - clean up all allocated resources |
33a732f4 AD |
763 | * @dev: drm device |
764 | */ | |
f09d675f | 765 | void intel_guc_fini(struct drm_device *dev) |
33a732f4 | 766 | { |
fac5e23e | 767 | struct drm_i915_private *dev_priv = to_i915(dev); |
33a732f4 AD |
768 | struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw; |
769 | ||
a9d8adad | 770 | mutex_lock(&dev->struct_mutex); |
4df001d3 | 771 | direct_interrupts_to_host(dev_priv); |
beffa517 DG |
772 | i915_guc_submission_disable(dev_priv); |
773 | i915_guc_submission_fini(dev_priv); | |
bac427f8 | 774 | |
33a732f4 | 775 | if (guc_fw->guc_fw_obj) |
f8c417cd | 776 | i915_gem_object_put(guc_fw->guc_fw_obj); |
33a732f4 | 777 | guc_fw->guc_fw_obj = NULL; |
bf248ca1 | 778 | mutex_unlock(&dev->struct_mutex); |
33a732f4 AD |
779 | |
780 | guc_fw->guc_fw_fetch_status = GUC_FIRMWARE_NONE; | |
781 | } |