2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
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 FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * Kevin Tian <kevin.tian@intel.com>
25 * Eddie Dong <eddie.dong@intel.com>
28 * Niu Bing <bing.niu@intel.com>
29 * Zhi Wang <zhi.a.wang@intel.com>
37 #include "hypercall.h"
40 #include "interrupt.h"
45 #include "scheduler.h"
46 #include "sched_policy.h"
48 #include "cmd_parser.h"
50 #define GVT_MAX_VGPU 8
53 INTEL_GVT_HYPERVISOR_XEN = 0,
54 INTEL_GVT_HYPERVISOR_KVM,
57 struct intel_gvt_host {
60 struct intel_gvt_mpt *mpt;
63 extern struct intel_gvt_host intel_gvt_host;
65 /* Describe per-platform limitations. */
66 struct intel_gvt_device_info {
67 u32 max_support_vgpus;
71 unsigned long msi_cap_offset;
74 u32 gtt_entry_size_shift;
75 int gmadr_bytes_in_cmd;
79 /* GM resources owned by a vGPU */
80 struct intel_vgpu_gm {
83 struct drm_mm_node low_gm_node;
84 struct drm_mm_node high_gm_node;
87 #define INTEL_GVT_MAX_NUM_FENCES 32
89 /* Fences owned by a vGPU */
90 struct intel_vgpu_fence {
91 struct drm_i915_fence_reg *regs[INTEL_GVT_MAX_NUM_FENCES];
96 struct intel_vgpu_mmio {
99 bool disable_warn_untrack;
102 #define INTEL_GVT_MAX_CFG_SPACE_SZ 256
103 #define INTEL_GVT_MAX_BAR_NUM 4
105 struct intel_vgpu_pci_bar {
110 struct intel_vgpu_cfg_space {
111 unsigned char virtual_cfg_space[INTEL_GVT_MAX_CFG_SPACE_SZ];
112 struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM];
115 #define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space)
117 #define INTEL_GVT_MAX_PIPE 4
119 struct intel_vgpu_irq {
120 bool irq_warn_once[INTEL_GVT_EVENT_MAX];
121 DECLARE_BITMAP(flip_done_event[INTEL_GVT_MAX_PIPE],
122 INTEL_GVT_EVENT_MAX);
125 struct intel_vgpu_opregion {
127 u32 gfn[INTEL_GVT_OPREGION_PAGES];
128 struct page *pages[INTEL_GVT_OPREGION_PAGES];
131 #define vgpu_opregion(vgpu) (&(vgpu->opregion))
133 #define INTEL_GVT_MAX_PORT 5
135 struct intel_vgpu_display {
136 struct intel_vgpu_i2c_edid i2c_edid;
137 struct intel_vgpu_port ports[INTEL_GVT_MAX_PORT];
138 struct intel_vgpu_sbi sbi;
141 struct vgpu_sched_ctl {
146 struct intel_gvt *gvt;
148 unsigned long handle; /* vGPU handle used by hypervisor MPT modules */
152 unsigned int resetting_eng;
154 struct vgpu_sched_ctl sched_ctl;
156 struct intel_vgpu_fence fence;
157 struct intel_vgpu_gm gm;
158 struct intel_vgpu_cfg_space cfg_space;
159 struct intel_vgpu_mmio mmio;
160 struct intel_vgpu_irq irq;
161 struct intel_vgpu_gtt gtt;
162 struct intel_vgpu_opregion opregion;
163 struct intel_vgpu_display display;
164 struct intel_vgpu_execlist execlist[I915_NUM_ENGINES];
165 struct list_head workload_q_head[I915_NUM_ENGINES];
166 struct kmem_cache *workloads;
167 atomic_t running_workload_num;
168 DECLARE_BITMAP(tlb_handle_pending, I915_NUM_ENGINES);
169 struct i915_gem_context *shadow_ctx;
170 DECLARE_BITMAP(shadow_ctx_desc_updated, I915_NUM_ENGINES);
172 #if IS_ENABLED(CONFIG_DRM_I915_GVT_KVMGT)
174 struct mdev_device *mdev;
175 struct vfio_region *region;
177 struct eventfd_ctx *intx_trigger;
178 struct eventfd_ctx *msi_trigger;
179 struct rb_root cache;
180 struct mutex cache_lock;
181 struct notifier_block iommu_notifier;
182 struct notifier_block group_notifier;
184 struct work_struct release_work;
190 struct intel_gvt_gm {
191 unsigned long vgpu_allocated_low_gm_size;
192 unsigned long vgpu_allocated_high_gm_size;
195 struct intel_gvt_fence {
196 unsigned long vgpu_allocated_fence_num;
199 /* Special MMIO blocks. */
200 struct gvt_mmio_block {
208 #define INTEL_GVT_MMIO_HASH_BITS 11
210 struct intel_gvt_mmio {
212 /* Register contains RO bits */
213 #define F_RO (1 << 0)
214 /* Register contains graphics address */
215 #define F_GMADR (1 << 1)
216 /* Mode mask registers with high 16 bits as the mask bits */
217 #define F_MODE_MASK (1 << 2)
218 /* This reg can be accessed by GPU commands */
219 #define F_CMD_ACCESS (1 << 3)
220 /* This reg has been accessed by a VM */
221 #define F_ACCESSED (1 << 4)
222 /* This reg has been accessed through GPU commands */
223 #define F_CMD_ACCESSED (1 << 5)
224 /* This reg could be accessed by unaligned address */
225 #define F_UNALIGN (1 << 6)
227 struct gvt_mmio_block *mmio_block;
228 unsigned int num_mmio_block;
230 DECLARE_HASHTABLE(mmio_info_table, INTEL_GVT_MMIO_HASH_BITS);
231 unsigned int num_tracked_mmio;
234 struct intel_gvt_firmware {
237 bool firmware_loaded;
240 struct intel_gvt_opregion {
245 #define NR_MAX_INTEL_VGPU_TYPES 20
246 struct intel_vgpu_type {
248 unsigned int avail_instance;
249 unsigned int low_gm_size;
250 unsigned int high_gm_size;
253 enum intel_vgpu_edid resolution;
258 struct drm_i915_private *dev_priv;
259 struct idr vgpu_idr; /* vGPU IDR pool */
261 struct intel_gvt_device_info device_info;
262 struct intel_gvt_gm gm;
263 struct intel_gvt_fence fence;
264 struct intel_gvt_mmio mmio;
265 struct intel_gvt_firmware firmware;
266 struct intel_gvt_irq irq;
267 struct intel_gvt_gtt gtt;
268 struct intel_gvt_opregion opregion;
269 struct intel_gvt_workload_scheduler scheduler;
270 struct notifier_block shadow_ctx_notifier_block[I915_NUM_ENGINES];
271 DECLARE_HASHTABLE(cmd_table, GVT_CMD_HASH_BITS);
272 struct intel_vgpu_type *types;
273 unsigned int num_types;
274 struct intel_vgpu *idle_vgpu;
276 struct task_struct *service_thread;
277 wait_queue_head_t service_thread_wq;
278 unsigned long service_request;
281 static inline struct intel_gvt *to_gvt(struct drm_i915_private *i915)
287 INTEL_GVT_REQUEST_EMULATE_VBLANK = 0,
289 /* Scheduling trigger by timer */
290 INTEL_GVT_REQUEST_SCHED = 1,
292 /* Scheduling trigger by event */
293 INTEL_GVT_REQUEST_EVENT_SCHED = 2,
296 static inline void intel_gvt_request_service(struct intel_gvt *gvt,
299 set_bit(service, (void *)&gvt->service_request);
300 wake_up(&gvt->service_thread_wq);
303 void intel_gvt_free_firmware(struct intel_gvt *gvt);
304 int intel_gvt_load_firmware(struct intel_gvt *gvt);
306 /* Aperture/GM space definitions for GVT device */
307 #define MB_TO_BYTES(mb) ((mb) << 20ULL)
308 #define BYTES_TO_MB(b) ((b) >> 20ULL)
310 #define HOST_LOW_GM_SIZE MB_TO_BYTES(128)
311 #define HOST_HIGH_GM_SIZE MB_TO_BYTES(384)
314 /* Aperture/GM space definitions for GVT device */
315 #define gvt_aperture_sz(gvt) (gvt->dev_priv->ggtt.mappable_end)
316 #define gvt_aperture_pa_base(gvt) (gvt->dev_priv->ggtt.mappable_base)
318 #define gvt_ggtt_gm_sz(gvt) (gvt->dev_priv->ggtt.base.total)
319 #define gvt_ggtt_sz(gvt) \
320 ((gvt->dev_priv->ggtt.base.total >> PAGE_SHIFT) << 3)
321 #define gvt_hidden_sz(gvt) (gvt_ggtt_gm_sz(gvt) - gvt_aperture_sz(gvt))
323 #define gvt_aperture_gmadr_base(gvt) (0)
324 #define gvt_aperture_gmadr_end(gvt) (gvt_aperture_gmadr_base(gvt) \
325 + gvt_aperture_sz(gvt) - 1)
327 #define gvt_hidden_gmadr_base(gvt) (gvt_aperture_gmadr_base(gvt) \
328 + gvt_aperture_sz(gvt))
329 #define gvt_hidden_gmadr_end(gvt) (gvt_hidden_gmadr_base(gvt) \
330 + gvt_hidden_sz(gvt) - 1)
332 #define gvt_fence_sz(gvt) (gvt->dev_priv->num_fence_regs)
334 /* Aperture/GM space definitions for vGPU */
335 #define vgpu_aperture_offset(vgpu) ((vgpu)->gm.low_gm_node.start)
336 #define vgpu_hidden_offset(vgpu) ((vgpu)->gm.high_gm_node.start)
337 #define vgpu_aperture_sz(vgpu) ((vgpu)->gm.aperture_sz)
338 #define vgpu_hidden_sz(vgpu) ((vgpu)->gm.hidden_sz)
340 #define vgpu_aperture_pa_base(vgpu) \
341 (gvt_aperture_pa_base(vgpu->gvt) + vgpu_aperture_offset(vgpu))
343 #define vgpu_ggtt_gm_sz(vgpu) ((vgpu)->gm.aperture_sz + (vgpu)->gm.hidden_sz)
345 #define vgpu_aperture_pa_end(vgpu) \
346 (vgpu_aperture_pa_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)
348 #define vgpu_aperture_gmadr_base(vgpu) (vgpu_aperture_offset(vgpu))
349 #define vgpu_aperture_gmadr_end(vgpu) \
350 (vgpu_aperture_gmadr_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)
352 #define vgpu_hidden_gmadr_base(vgpu) (vgpu_hidden_offset(vgpu))
353 #define vgpu_hidden_gmadr_end(vgpu) \
354 (vgpu_hidden_gmadr_base(vgpu) + vgpu_hidden_sz(vgpu) - 1)
356 #define vgpu_fence_base(vgpu) (vgpu->fence.base)
357 #define vgpu_fence_sz(vgpu) (vgpu->fence.size)
359 struct intel_vgpu_creation_params {
361 __u64 low_gm_sz; /* in MB */
362 __u64 high_gm_sz; /* in MB */
371 int intel_vgpu_alloc_resource(struct intel_vgpu *vgpu,
372 struct intel_vgpu_creation_params *param);
373 void intel_vgpu_reset_resource(struct intel_vgpu *vgpu);
374 void intel_vgpu_free_resource(struct intel_vgpu *vgpu);
375 void intel_vgpu_write_fence(struct intel_vgpu *vgpu,
376 u32 fence, u64 value);
378 /* Macros for easily accessing vGPU virtual/shadow register */
379 #define vgpu_vreg(vgpu, reg) \
380 (*(u32 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
381 #define vgpu_vreg8(vgpu, reg) \
382 (*(u8 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
383 #define vgpu_vreg16(vgpu, reg) \
384 (*(u16 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
385 #define vgpu_vreg64(vgpu, reg) \
386 (*(u64 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
387 #define vgpu_sreg(vgpu, reg) \
388 (*(u32 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
389 #define vgpu_sreg8(vgpu, reg) \
390 (*(u8 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
391 #define vgpu_sreg16(vgpu, reg) \
392 (*(u16 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
393 #define vgpu_sreg64(vgpu, reg) \
394 (*(u64 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
396 #define for_each_active_vgpu(gvt, vgpu, id) \
397 idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \
398 for_each_if(vgpu->active)
400 static inline void intel_vgpu_write_pci_bar(struct intel_vgpu *vgpu,
401 u32 offset, u32 val, bool low)
405 /* BAR offset should be 32 bits algiend */
406 offset = rounddown(offset, 4);
407 pval = (u32 *)(vgpu_cfg_space(vgpu) + offset);
411 * only update bit 31 - bit 4,
412 * leave the bit 3 - bit 0 unchanged.
414 *pval = (val & GENMASK(31, 4)) | (*pval & GENMASK(3, 0));
420 int intel_gvt_init_vgpu_types(struct intel_gvt *gvt);
421 void intel_gvt_clean_vgpu_types(struct intel_gvt *gvt);
423 struct intel_vgpu *intel_gvt_create_idle_vgpu(struct intel_gvt *gvt);
424 void intel_gvt_destroy_idle_vgpu(struct intel_vgpu *vgpu);
425 struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt,
426 struct intel_vgpu_type *type);
427 void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu);
428 void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr,
429 unsigned int engine_mask);
430 void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu);
431 void intel_gvt_activate_vgpu(struct intel_vgpu *vgpu);
432 void intel_gvt_deactivate_vgpu(struct intel_vgpu *vgpu);
434 /* validating GM functions */
435 #define vgpu_gmadr_is_aperture(vgpu, gmadr) \
436 ((gmadr >= vgpu_aperture_gmadr_base(vgpu)) && \
437 (gmadr <= vgpu_aperture_gmadr_end(vgpu)))
439 #define vgpu_gmadr_is_hidden(vgpu, gmadr) \
440 ((gmadr >= vgpu_hidden_gmadr_base(vgpu)) && \
441 (gmadr <= vgpu_hidden_gmadr_end(vgpu)))
443 #define vgpu_gmadr_is_valid(vgpu, gmadr) \
444 ((vgpu_gmadr_is_aperture(vgpu, gmadr) || \
445 (vgpu_gmadr_is_hidden(vgpu, gmadr))))
447 #define gvt_gmadr_is_aperture(gvt, gmadr) \
448 ((gmadr >= gvt_aperture_gmadr_base(gvt)) && \
449 (gmadr <= gvt_aperture_gmadr_end(gvt)))
451 #define gvt_gmadr_is_hidden(gvt, gmadr) \
452 ((gmadr >= gvt_hidden_gmadr_base(gvt)) && \
453 (gmadr <= gvt_hidden_gmadr_end(gvt)))
455 #define gvt_gmadr_is_valid(gvt, gmadr) \
456 (gvt_gmadr_is_aperture(gvt, gmadr) || \
457 gvt_gmadr_is_hidden(gvt, gmadr))
459 bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size);
460 int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu *vgpu, u64 g_addr, u64 *h_addr);
461 int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu *vgpu, u64 h_addr, u64 *g_addr);
462 int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index,
463 unsigned long *h_index);
464 int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index,
465 unsigned long *g_index);
467 void intel_vgpu_init_cfg_space(struct intel_vgpu *vgpu,
469 void intel_vgpu_reset_cfg_space(struct intel_vgpu *vgpu);
471 int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset,
472 void *p_data, unsigned int bytes);
474 int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset,
475 void *p_data, unsigned int bytes);
477 void intel_gvt_clean_opregion(struct intel_gvt *gvt);
478 int intel_gvt_init_opregion(struct intel_gvt *gvt);
480 void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu);
481 int intel_vgpu_init_opregion(struct intel_vgpu *vgpu, u32 gpa);
483 int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci);
484 void populate_pvinfo_page(struct intel_vgpu *vgpu);
486 int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload);
488 struct intel_gvt_ops {
489 int (*emulate_cfg_read)(struct intel_vgpu *, unsigned int, void *,
491 int (*emulate_cfg_write)(struct intel_vgpu *, unsigned int, void *,
493 int (*emulate_mmio_read)(struct intel_vgpu *, u64, void *,
495 int (*emulate_mmio_write)(struct intel_vgpu *, u64, void *,
497 struct intel_vgpu *(*vgpu_create)(struct intel_gvt *,
498 struct intel_vgpu_type *);
499 void (*vgpu_destroy)(struct intel_vgpu *);
500 void (*vgpu_reset)(struct intel_vgpu *);
501 void (*vgpu_activate)(struct intel_vgpu *);
502 void (*vgpu_deactivate)(struct intel_vgpu *);
507 GVT_FAILSAFE_UNSUPPORTED_GUEST,
508 GVT_FAILSAFE_INSUFFICIENT_RESOURCE,
511 static inline void mmio_hw_access_pre(struct drm_i915_private *dev_priv)
513 intel_runtime_pm_get(dev_priv);
516 static inline void mmio_hw_access_post(struct drm_i915_private *dev_priv)
518 intel_runtime_pm_put(dev_priv);
522 * intel_gvt_mmio_set_accessed - mark a MMIO has been accessed
524 * @offset: register offset
527 static inline void intel_gvt_mmio_set_accessed(
528 struct intel_gvt *gvt, unsigned int offset)
530 gvt->mmio.mmio_attribute[offset >> 2] |= F_ACCESSED;
534 * intel_gvt_mmio_is_cmd_accessed - mark a MMIO could be accessed by command
536 * @offset: register offset
539 static inline bool intel_gvt_mmio_is_cmd_access(
540 struct intel_gvt *gvt, unsigned int offset)
542 return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_ACCESS;
546 * intel_gvt_mmio_is_unalign - mark a MMIO could be accessed unaligned
548 * @offset: register offset
551 static inline bool intel_gvt_mmio_is_unalign(
552 struct intel_gvt *gvt, unsigned int offset)
554 return gvt->mmio.mmio_attribute[offset >> 2] & F_UNALIGN;
558 * intel_gvt_mmio_set_cmd_accessed - mark a MMIO has been accessed by command
560 * @offset: register offset
563 static inline void intel_gvt_mmio_set_cmd_accessed(
564 struct intel_gvt *gvt, unsigned int offset)
566 gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_ACCESSED;
570 * intel_gvt_mmio_has_mode_mask - if a MMIO has a mode mask
572 * @offset: register offset
575 * True if a MMIO has a mode mask in its higher 16 bits, false if it isn't.
578 static inline bool intel_gvt_mmio_has_mode_mask(
579 struct intel_gvt *gvt, unsigned int offset)
581 return gvt->mmio.mmio_attribute[offset >> 2] & F_MODE_MASK;