2 * Copyright © 2014 Intel Corporation
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:
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
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
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>
29 #include <linux/firmware.h>
31 #include "intel_guc.h"
34 * DOC: GuC-specific firmware loader
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.
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
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.
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
62 #define I915_SKL_GUC_UCODE "i915/skl_guc_ver6_1.bin"
63 MODULE_FIRMWARE(I915_SKL_GUC_UCODE
);
65 #define I915_BXT_GUC_UCODE "i915/bxt_guc_ver8_7.bin"
66 MODULE_FIRMWARE(I915_BXT_GUC_UCODE
);
68 /* User-friendly representation of an enum */
69 const char *intel_guc_fw_status_repr(enum intel_guc_fw_status status
)
72 case GUC_FIRMWARE_FAIL
:
74 case GUC_FIRMWARE_NONE
:
76 case GUC_FIRMWARE_PENDING
:
78 case GUC_FIRMWARE_SUCCESS
:
85 static void direct_interrupts_to_host(struct drm_i915_private
*dev_priv
)
87 struct intel_engine_cs
*engine
;
90 /* tell all command streamers NOT to forward interrupts and vblank to GuC */
91 irqs
= _MASKED_FIELD(GFX_FORWARD_VBLANK_MASK
, GFX_FORWARD_VBLANK_NEVER
);
92 irqs
|= _MASKED_BIT_DISABLE(GFX_INTERRUPT_STEERING
);
93 for_each_engine(engine
, dev_priv
)
94 I915_WRITE(RING_MODE_GEN7(engine
), irqs
);
96 /* route all GT interrupts to the host */
97 I915_WRITE(GUC_BCS_RCS_IER
, 0);
98 I915_WRITE(GUC_VCS2_VCS1_IER
, 0);
99 I915_WRITE(GUC_WD_VECS_IER
, 0);
102 static void direct_interrupts_to_guc(struct drm_i915_private
*dev_priv
)
104 struct intel_engine_cs
*engine
;
108 /* tell all command streamers to forward interrupts and vblank to GuC */
109 irqs
= _MASKED_FIELD(GFX_FORWARD_VBLANK_MASK
, GFX_FORWARD_VBLANK_ALWAYS
);
110 irqs
|= _MASKED_BIT_ENABLE(GFX_INTERRUPT_STEERING
);
111 for_each_engine(engine
, dev_priv
)
112 I915_WRITE(RING_MODE_GEN7(engine
), irqs
);
114 /* route USER_INTERRUPT to Host, all others are sent to GuC. */
115 irqs
= GT_RENDER_USER_INTERRUPT
<< GEN8_RCS_IRQ_SHIFT
|
116 GT_RENDER_USER_INTERRUPT
<< GEN8_BCS_IRQ_SHIFT
;
117 /* These three registers have the same bit definitions */
118 I915_WRITE(GUC_BCS_RCS_IER
, ~irqs
);
119 I915_WRITE(GUC_VCS2_VCS1_IER
, ~irqs
);
120 I915_WRITE(GUC_WD_VECS_IER
, ~irqs
);
123 * If GuC has routed PM interrupts to itself, don't keep it.
124 * and keep other interrupts those are unmasked by GuC.
126 tmp
= I915_READ(GEN6_PMINTRMSK
);
127 if (tmp
& GEN8_PMINTR_REDIRECT_TO_NON_DISP
) {
128 dev_priv
->rps
.pm_intr_keep
|= ~(tmp
& ~GEN8_PMINTR_REDIRECT_TO_NON_DISP
);
129 dev_priv
->rps
.pm_intr_keep
&= ~GEN8_PMINTR_REDIRECT_TO_NON_DISP
;
133 static u32
get_gttype(struct drm_i915_private
*dev_priv
)
135 /* XXX: GT type based on PCI device ID? field seems unused by fw */
139 static u32
get_core_family(struct drm_i915_private
*dev_priv
)
141 switch (INTEL_INFO(dev_priv
)->gen
) {
143 return GFXCORE_FAMILY_GEN9
;
146 DRM_ERROR("GUC: unsupported core family\n");
147 return GFXCORE_FAMILY_UNKNOWN
;
151 static void set_guc_init_params(struct drm_i915_private
*dev_priv
)
153 struct intel_guc
*guc
= &dev_priv
->guc
;
154 u32 params
[GUC_CTL_MAX_DWORDS
];
157 memset(¶ms
, 0, sizeof(params
));
159 params
[GUC_CTL_DEVICE_INFO
] |=
160 (get_gttype(dev_priv
) << GUC_CTL_GTTYPE_SHIFT
) |
161 (get_core_family(dev_priv
) << GUC_CTL_COREFAMILY_SHIFT
);
164 * GuC ARAT increment is 10 ns. GuC default scheduler quantum is one
165 * second. This ARAR is calculated by:
166 * Scheduler-Quantum-in-ns / ARAT-increment-in-ns = 1000000000 / 10
168 params
[GUC_CTL_ARAT_HIGH
] = 0;
169 params
[GUC_CTL_ARAT_LOW
] = 100000000;
171 params
[GUC_CTL_WA
] |= GUC_CTL_WA_UK_BY_DRIVER
;
173 params
[GUC_CTL_FEATURE
] |= GUC_CTL_DISABLE_SCHEDULER
|
174 GUC_CTL_VCS2_ENABLED
;
176 if (i915
.guc_log_level
>= 0) {
177 params
[GUC_CTL_LOG_PARAMS
] = guc
->log_flags
;
178 params
[GUC_CTL_DEBUG
] =
179 i915
.guc_log_level
<< GUC_LOG_VERBOSITY_SHIFT
;
183 u32 ads
= (u32
)i915_gem_obj_ggtt_offset(guc
->ads_obj
)
185 params
[GUC_CTL_DEBUG
] |= ads
<< GUC_ADS_ADDR_SHIFT
;
186 params
[GUC_CTL_DEBUG
] |= GUC_ADS_ENABLED
;
189 /* If GuC submission is enabled, set up additional parameters here */
190 if (i915
.enable_guc_submission
) {
191 u32 pgs
= i915_gem_obj_ggtt_offset(dev_priv
->guc
.ctx_pool_obj
);
192 u32 ctx_in_16
= GUC_MAX_GPU_CONTEXTS
/ 16;
195 params
[GUC_CTL_CTXINFO
] = (pgs
<< GUC_CTL_BASE_ADDR_SHIFT
) |
196 (ctx_in_16
<< GUC_CTL_CTXNUM_IN16_SHIFT
);
198 params
[GUC_CTL_FEATURE
] |= GUC_CTL_KERNEL_SUBMISSIONS
;
200 /* Unmask this bit to enable the GuC's internal scheduler */
201 params
[GUC_CTL_FEATURE
] &= ~GUC_CTL_DISABLE_SCHEDULER
;
204 I915_WRITE(SOFT_SCRATCH(0), 0);
206 for (i
= 0; i
< GUC_CTL_MAX_DWORDS
; i
++)
207 I915_WRITE(SOFT_SCRATCH(1 + i
), params
[i
]);
211 * Read the GuC status register (GUC_STATUS) and store it in the
212 * specified location; then return a boolean indicating whether
213 * the value matches either of two values representing completion
214 * of the GuC boot process.
216 * This is used for polling the GuC status in a wait_for()
219 static inline bool guc_ucode_response(struct drm_i915_private
*dev_priv
,
222 u32 val
= I915_READ(GUC_STATUS
);
223 u32 uk_val
= val
& GS_UKERNEL_MASK
;
225 return (uk_val
== GS_UKERNEL_READY
||
226 ((val
& GS_MIA_CORE_STATE
) && uk_val
== GS_UKERNEL_LAPIC_DONE
));
230 * Transfer the firmware image to RAM for execution by the microcontroller.
232 * Architecturally, the DMA engine is bidirectional, and can potentially even
233 * transfer between GTT locations. This functionality is left out of the API
234 * for now as there is no need for it.
236 * Note that GuC needs the CSS header plus uKernel code to be copied by the
237 * DMA engine in one operation, whereas the RSA signature is loaded via MMIO.
239 static int guc_ucode_xfer_dma(struct drm_i915_private
*dev_priv
)
241 struct intel_guc_fw
*guc_fw
= &dev_priv
->guc
.guc_fw
;
242 struct drm_i915_gem_object
*fw_obj
= guc_fw
->guc_fw_obj
;
243 unsigned long offset
;
244 struct sg_table
*sg
= fw_obj
->pages
;
245 u32 status
, rsa
[UOS_RSA_SCRATCH_MAX_COUNT
];
248 /* where RSA signature starts */
249 offset
= guc_fw
->rsa_offset
;
251 /* Copy RSA signature from the fw image to HW for verification */
252 sg_pcopy_to_buffer(sg
->sgl
, sg
->nents
, rsa
, sizeof(rsa
), offset
);
253 for (i
= 0; i
< UOS_RSA_SCRATCH_MAX_COUNT
; i
++)
254 I915_WRITE(UOS_RSA_SCRATCH(i
), rsa
[i
]);
256 /* The header plus uCode will be copied to WOPCM via DMA, excluding any
257 * other components */
258 I915_WRITE(DMA_COPY_SIZE
, guc_fw
->header_size
+ guc_fw
->ucode_size
);
260 /* Set the source address for the new blob */
261 offset
= i915_gem_obj_ggtt_offset(fw_obj
) + guc_fw
->header_offset
;
262 I915_WRITE(DMA_ADDR_0_LOW
, lower_32_bits(offset
));
263 I915_WRITE(DMA_ADDR_0_HIGH
, upper_32_bits(offset
) & 0xFFFF);
266 * Set the DMA destination. Current uCode expects the code to be
267 * loaded at 8k; locations below this are used for the stack.
269 I915_WRITE(DMA_ADDR_1_LOW
, 0x2000);
270 I915_WRITE(DMA_ADDR_1_HIGH
, DMA_ADDRESS_SPACE_WOPCM
);
272 /* Finally start the DMA */
273 I915_WRITE(DMA_CTRL
, _MASKED_BIT_ENABLE(UOS_MOVE
| START_DMA
));
276 * Wait for the DMA to complete & the GuC to start up.
277 * NB: Docs recommend not using the interrupt for completion.
278 * Measurements indicate this should take no more than 20ms, so a
279 * timeout here indicates that the GuC has failed and is unusable.
280 * (Higher levels of the driver will attempt to fall back to
281 * execlist mode if this happens.)
283 ret
= wait_for(guc_ucode_response(dev_priv
, &status
), 100);
285 DRM_DEBUG_DRIVER("DMA status 0x%x, GuC status 0x%x\n",
286 I915_READ(DMA_CTRL
), status
);
288 if ((status
& GS_BOOTROM_MASK
) == GS_BOOTROM_RSA_FAILED
) {
289 DRM_ERROR("GuC firmware signature verification failed\n");
293 DRM_DEBUG_DRIVER("returning %d\n", ret
);
298 static u32
guc_wopcm_size(struct drm_i915_private
*dev_priv
)
300 u32 wopcm_size
= GUC_WOPCM_TOP
;
302 /* On BXT, the top of WOPCM is reserved for RC6 context */
303 if (IS_BROXTON(dev_priv
))
304 wopcm_size
-= BXT_GUC_WOPCM_RC6_RESERVED
;
310 * Load the GuC firmware blob into the MinuteIA.
312 static int guc_ucode_xfer(struct drm_i915_private
*dev_priv
)
314 struct intel_guc_fw
*guc_fw
= &dev_priv
->guc
.guc_fw
;
315 struct drm_device
*dev
= dev_priv
->dev
;
318 ret
= i915_gem_object_set_to_gtt_domain(guc_fw
->guc_fw_obj
, false);
320 DRM_DEBUG_DRIVER("set-domain failed %d\n", ret
);
324 ret
= i915_gem_obj_ggtt_pin(guc_fw
->guc_fw_obj
, 0, 0);
326 DRM_DEBUG_DRIVER("pin failed %d\n", ret
);
330 /* Invalidate GuC TLB to let GuC take the latest updates to GTT. */
331 I915_WRITE(GEN8_GTCR
, GEN8_GTCR_INVALIDATE
);
333 intel_uncore_forcewake_get(dev_priv
, FORCEWAKE_ALL
);
336 I915_WRITE(GUC_WOPCM_SIZE
, guc_wopcm_size(dev_priv
));
337 I915_WRITE(DMA_GUC_WOPCM_OFFSET
, GUC_WOPCM_OFFSET_VALUE
);
339 /* Enable MIA caching. GuC clock gating is disabled. */
340 I915_WRITE(GUC_SHIM_CONTROL
, GUC_SHIM_CONTROL_VALUE
);
342 /* WaDisableMinuteIaClockGating:skl,bxt */
343 if (IS_SKL_REVID(dev
, 0, SKL_REVID_B0
) ||
344 IS_BXT_REVID(dev
, 0, BXT_REVID_A1
)) {
345 I915_WRITE(GUC_SHIM_CONTROL
, (I915_READ(GUC_SHIM_CONTROL
) &
346 ~GUC_ENABLE_MIA_CLOCK_GATING
));
349 /* WaC6DisallowByGfxPause*/
350 I915_WRITE(GEN6_GFXPAUSE
, 0x30FFF);
353 I915_WRITE(GEN9LP_GT_PM_CONFIG
, GT_DOORBELL_ENABLE
);
355 I915_WRITE(GEN9_GT_PM_CONFIG
, GT_DOORBELL_ENABLE
);
358 /* DOP Clock Gating Enable for GuC clocks */
359 I915_WRITE(GEN7_MISCCPCTL
, (GEN8_DOP_CLOCK_GATE_GUC_ENABLE
|
360 I915_READ(GEN7_MISCCPCTL
)));
362 /* allows for 5us before GT can go to RC6 */
363 I915_WRITE(GUC_ARAT_C6DIS
, 0x1FF);
366 set_guc_init_params(dev_priv
);
368 ret
= guc_ucode_xfer_dma(dev_priv
);
370 intel_uncore_forcewake_put(dev_priv
, FORCEWAKE_ALL
);
373 * We keep the object pages for reuse during resume. But we can unpin it
374 * now that DMA has completed, so it doesn't continue to take up space.
376 i915_gem_object_ggtt_unpin(guc_fw
->guc_fw_obj
);
381 static int i915_reset_guc(struct drm_i915_private
*dev_priv
)
386 ret
= intel_guc_reset(dev_priv
);
388 DRM_ERROR("GuC reset failed, ret = %d\n", ret
);
392 guc_status
= I915_READ(GUC_STATUS
);
393 WARN(!(guc_status
& GS_MIA_IN_RESET
),
394 "GuC status: 0x%x, MIA core expected to be in reset\n", guc_status
);
400 * intel_guc_setup() - finish preparing the GuC for activity
403 * Called from gem_init_hw() during driver loading and also after a GPU reset.
405 * The main action required here it to load the GuC uCode into the device.
406 * The firmware image should have already been fetched into memory by the
407 * earlier call to intel_guc_init(), so here we need only check that worked,
408 * and then transfer the image to the h/w.
410 * Return: non-zero code on error
412 int intel_guc_setup(struct drm_device
*dev
)
414 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
415 struct intel_guc_fw
*guc_fw
= &dev_priv
->guc
.guc_fw
;
416 const char *fw_path
= guc_fw
->guc_fw_path
;
417 int retries
, ret
, err
;
419 DRM_DEBUG_DRIVER("GuC fw status: path %s, fetch %s, load %s\n",
421 intel_guc_fw_status_repr(guc_fw
->guc_fw_fetch_status
),
422 intel_guc_fw_status_repr(guc_fw
->guc_fw_load_status
));
424 /* Loading forbidden, or no firmware to load? */
425 if (!i915
.enable_guc_loading
) {
428 } else if (fw_path
== NULL
) {
429 /* Device is known to have no uCode (e.g. no GuC) */
432 } else if (*fw_path
== '\0') {
433 /* Device has a GuC but we don't know what f/w to load? */
434 DRM_INFO("No GuC firmware known for this platform\n");
439 /* Fetch failed, or already fetched but failed to load? */
440 if (guc_fw
->guc_fw_fetch_status
!= GUC_FIRMWARE_SUCCESS
) {
443 } else if (guc_fw
->guc_fw_load_status
== GUC_FIRMWARE_FAIL
) {
448 direct_interrupts_to_host(dev_priv
);
450 guc_fw
->guc_fw_load_status
= GUC_FIRMWARE_PENDING
;
452 DRM_DEBUG_DRIVER("GuC fw status: fetch %s, load %s\n",
453 intel_guc_fw_status_repr(guc_fw
->guc_fw_fetch_status
),
454 intel_guc_fw_status_repr(guc_fw
->guc_fw_load_status
));
456 err
= i915_guc_submission_init(dev_priv
);
461 * WaEnableuKernelHeaderValidFix:skl,bxt
462 * For BXT, this is only upto B0 but below WA is required for later
463 * steppings also so this is extended as well.
465 /* WaEnableGuCBootHashCheckNotSet:skl,bxt */
466 for (retries
= 3; ; ) {
468 * Always reset the GuC just before (re)loading, so
469 * that the state and timing are fairly predictable
471 err
= i915_reset_guc(dev_priv
);
473 DRM_ERROR("GuC reset failed: %d\n", err
);
477 err
= guc_ucode_xfer(dev_priv
);
484 DRM_INFO("GuC fw load failed: %d; will reset and "
485 "retry %d more time(s)\n", err
, retries
);
488 guc_fw
->guc_fw_load_status
= GUC_FIRMWARE_SUCCESS
;
490 DRM_DEBUG_DRIVER("GuC fw status: fetch %s, load %s\n",
491 intel_guc_fw_status_repr(guc_fw
->guc_fw_fetch_status
),
492 intel_guc_fw_status_repr(guc_fw
->guc_fw_load_status
));
494 if (i915
.enable_guc_submission
) {
495 err
= i915_guc_submission_enable(dev_priv
);
498 direct_interrupts_to_guc(dev_priv
);
504 if (guc_fw
->guc_fw_load_status
== GUC_FIRMWARE_PENDING
)
505 guc_fw
->guc_fw_load_status
= GUC_FIRMWARE_FAIL
;
507 direct_interrupts_to_host(dev_priv
);
508 i915_guc_submission_disable(dev_priv
);
509 i915_guc_submission_fini(dev_priv
);
512 * We've failed to load the firmware :(
514 * Decide whether to disable GuC submission and fall back to
515 * execlist mode, and whether to hide the error by returning
516 * zero or to return -EIO, which the caller will treat as a
517 * nonfatal error (i.e. it doesn't prevent driver load, but
518 * marks the GPU as wedged until reset).
520 if (i915
.enable_guc_loading
> 1) {
522 } else if (i915
.enable_guc_submission
> 1) {
528 if (err
== 0 && !HAS_GUC_UCODE(dev
))
529 ; /* Don't mention the GuC! */
531 DRM_INFO("GuC firmware load skipped\n");
532 else if (ret
!= -EIO
)
533 DRM_INFO("GuC firmware load failed: %d\n", err
);
535 DRM_ERROR("GuC firmware load failed: %d\n", err
);
537 if (i915
.enable_guc_submission
) {
539 DRM_INFO("GuC submission without firmware not supported\n");
541 DRM_INFO("Falling back from GuC submission to execlist mode\n");
543 DRM_ERROR("GuC init failed: %d\n", ret
);
545 i915
.enable_guc_submission
= 0;
550 static void guc_fw_fetch(struct drm_device
*dev
, struct intel_guc_fw
*guc_fw
)
552 struct drm_i915_gem_object
*obj
;
553 const struct firmware
*fw
;
554 struct guc_css_header
*css
;
558 DRM_DEBUG_DRIVER("before requesting firmware: GuC fw fetch status %s\n",
559 intel_guc_fw_status_repr(guc_fw
->guc_fw_fetch_status
));
561 err
= request_firmware(&fw
, guc_fw
->guc_fw_path
, &dev
->pdev
->dev
);
567 DRM_DEBUG_DRIVER("fetch GuC fw from %s succeeded, fw %p\n",
568 guc_fw
->guc_fw_path
, fw
);
570 /* Check the size of the blob before examining buffer contents */
571 if (fw
->size
< sizeof(struct guc_css_header
)) {
572 DRM_ERROR("Firmware header is missing\n");
576 css
= (struct guc_css_header
*)fw
->data
;
578 /* Firmware bits always start from header */
579 guc_fw
->header_offset
= 0;
580 guc_fw
->header_size
= (css
->header_size_dw
- css
->modulus_size_dw
-
581 css
->key_size_dw
- css
->exponent_size_dw
) * sizeof(u32
);
583 if (guc_fw
->header_size
!= sizeof(struct guc_css_header
)) {
584 DRM_ERROR("CSS header definition mismatch\n");
589 guc_fw
->ucode_offset
= guc_fw
->header_offset
+ guc_fw
->header_size
;
590 guc_fw
->ucode_size
= (css
->size_dw
- css
->header_size_dw
) * sizeof(u32
);
593 if (css
->key_size_dw
!= UOS_RSA_SCRATCH_MAX_COUNT
) {
594 DRM_ERROR("RSA key size is bad\n");
597 guc_fw
->rsa_offset
= guc_fw
->ucode_offset
+ guc_fw
->ucode_size
;
598 guc_fw
->rsa_size
= css
->key_size_dw
* sizeof(u32
);
600 /* At least, it should have header, uCode and RSA. Size of all three. */
601 size
= guc_fw
->header_size
+ guc_fw
->ucode_size
+ guc_fw
->rsa_size
;
602 if (fw
->size
< size
) {
603 DRM_ERROR("Missing firmware components\n");
607 /* Header and uCode will be loaded to WOPCM. Size of the two. */
608 size
= guc_fw
->header_size
+ guc_fw
->ucode_size
;
609 if (size
> guc_wopcm_size(dev
->dev_private
)) {
610 DRM_ERROR("Firmware is too large to fit in WOPCM\n");
615 * The GuC firmware image has the version number embedded at a well-known
616 * offset within the firmware blob; note that major / minor version are
617 * TWO bytes each (i.e. u16), although all pointers and offsets are defined
618 * in terms of bytes (u8).
620 guc_fw
->guc_fw_major_found
= css
->guc_sw_version
>> 16;
621 guc_fw
->guc_fw_minor_found
= css
->guc_sw_version
& 0xFFFF;
623 if (guc_fw
->guc_fw_major_found
!= guc_fw
->guc_fw_major_wanted
||
624 guc_fw
->guc_fw_minor_found
< guc_fw
->guc_fw_minor_wanted
) {
625 DRM_ERROR("GuC firmware version %d.%d, required %d.%d\n",
626 guc_fw
->guc_fw_major_found
, guc_fw
->guc_fw_minor_found
,
627 guc_fw
->guc_fw_major_wanted
, guc_fw
->guc_fw_minor_wanted
);
632 DRM_DEBUG_DRIVER("firmware version %d.%d OK (minimum %d.%d)\n",
633 guc_fw
->guc_fw_major_found
, guc_fw
->guc_fw_minor_found
,
634 guc_fw
->guc_fw_major_wanted
, guc_fw
->guc_fw_minor_wanted
);
636 mutex_lock(&dev
->struct_mutex
);
637 obj
= i915_gem_object_create_from_data(dev
, fw
->data
, fw
->size
);
638 mutex_unlock(&dev
->struct_mutex
);
639 if (IS_ERR_OR_NULL(obj
)) {
640 err
= obj
? PTR_ERR(obj
) : -ENOMEM
;
644 guc_fw
->guc_fw_obj
= obj
;
645 guc_fw
->guc_fw_size
= fw
->size
;
647 DRM_DEBUG_DRIVER("GuC fw fetch status SUCCESS, obj %p\n",
650 release_firmware(fw
);
651 guc_fw
->guc_fw_fetch_status
= GUC_FIRMWARE_SUCCESS
;
655 DRM_DEBUG_DRIVER("GuC fw fetch status FAIL; err %d, fw %p, obj %p\n",
656 err
, fw
, guc_fw
->guc_fw_obj
);
657 DRM_ERROR("Failed to fetch GuC firmware from %s (error %d)\n",
658 guc_fw
->guc_fw_path
, err
);
660 mutex_lock(&dev
->struct_mutex
);
661 obj
= guc_fw
->guc_fw_obj
;
663 drm_gem_object_unreference(&obj
->base
);
664 guc_fw
->guc_fw_obj
= NULL
;
665 mutex_unlock(&dev
->struct_mutex
);
667 release_firmware(fw
); /* OK even if fw is NULL */
668 guc_fw
->guc_fw_fetch_status
= GUC_FIRMWARE_FAIL
;
672 * intel_guc_init() - define parameters and fetch firmware
675 * Called early during driver load, but after GEM is initialised.
677 * The firmware will be transferred to the GuC's memory later,
678 * when intel_guc_setup() is called.
680 void intel_guc_init(struct drm_device
*dev
)
682 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
683 struct intel_guc_fw
*guc_fw
= &dev_priv
->guc
.guc_fw
;
686 /* A negative value means "use platform default" */
687 if (i915
.enable_guc_loading
< 0)
688 i915
.enable_guc_loading
= HAS_GUC_UCODE(dev
);
689 if (i915
.enable_guc_submission
< 0)
690 i915
.enable_guc_submission
= HAS_GUC_SCHED(dev
);
692 if (!HAS_GUC_UCODE(dev
)) {
694 } else if (IS_SKYLAKE(dev
)) {
695 fw_path
= I915_SKL_GUC_UCODE
;
696 guc_fw
->guc_fw_major_wanted
= 6;
697 guc_fw
->guc_fw_minor_wanted
= 1;
698 } else if (IS_BROXTON(dev
)) {
699 fw_path
= I915_BXT_GUC_UCODE
;
700 guc_fw
->guc_fw_major_wanted
= 8;
701 guc_fw
->guc_fw_minor_wanted
= 7;
703 fw_path
= ""; /* unknown device */
706 guc_fw
->guc_dev
= dev
;
707 guc_fw
->guc_fw_path
= fw_path
;
708 guc_fw
->guc_fw_fetch_status
= GUC_FIRMWARE_NONE
;
709 guc_fw
->guc_fw_load_status
= GUC_FIRMWARE_NONE
;
711 /* Early (and silent) return if GuC loading is disabled */
712 if (!i915
.enable_guc_loading
)
716 if (*fw_path
== '\0')
719 guc_fw
->guc_fw_fetch_status
= GUC_FIRMWARE_PENDING
;
720 DRM_DEBUG_DRIVER("GuC firmware pending, path %s\n", fw_path
);
721 guc_fw_fetch(dev
, guc_fw
);
722 /* status must now be FAIL or SUCCESS */
726 * intel_guc_fini() - clean up all allocated resources
729 void intel_guc_fini(struct drm_device
*dev
)
731 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
732 struct intel_guc_fw
*guc_fw
= &dev_priv
->guc
.guc_fw
;
734 mutex_lock(&dev
->struct_mutex
);
735 direct_interrupts_to_host(dev_priv
);
736 i915_guc_submission_disable(dev_priv
);
737 i915_guc_submission_fini(dev_priv
);
739 if (guc_fw
->guc_fw_obj
)
740 drm_gem_object_unreference(&guc_fw
->guc_fw_obj
->base
);
741 guc_fw
->guc_fw_obj
= NULL
;
742 mutex_unlock(&dev
->struct_mutex
);
744 guc_fw
->guc_fw_fetch_status
= GUC_FIRMWARE_NONE
;