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
;
142 struct intel_gvt
*gvt
;
144 unsigned long handle
; /* vGPU handle used by hypervisor MPT modules */
149 struct intel_vgpu_fence fence
;
150 struct intel_vgpu_gm gm
;
151 struct intel_vgpu_cfg_space cfg_space
;
152 struct intel_vgpu_mmio mmio
;
153 struct intel_vgpu_irq irq
;
154 struct intel_vgpu_gtt gtt
;
155 struct intel_vgpu_opregion opregion
;
156 struct intel_vgpu_display display
;
157 struct intel_vgpu_execlist execlist
[I915_NUM_ENGINES
];
158 struct list_head workload_q_head
[I915_NUM_ENGINES
];
159 struct kmem_cache
*workloads
;
160 atomic_t running_workload_num
;
161 DECLARE_BITMAP(tlb_handle_pending
, I915_NUM_ENGINES
);
162 struct i915_gem_context
*shadow_ctx
;
163 struct notifier_block shadow_ctx_notifier_block
;
165 #if IS_ENABLED(CONFIG_DRM_I915_GVT_KVMGT)
167 struct mdev_device
*mdev
;
168 struct vfio_region
*region
;
170 struct eventfd_ctx
*intx_trigger
;
171 struct eventfd_ctx
*msi_trigger
;
172 struct rb_root cache
;
173 struct mutex cache_lock
;
174 struct notifier_block iommu_notifier
;
175 struct notifier_block group_notifier
;
177 struct work_struct release_work
;
183 struct intel_gvt_gm
{
184 unsigned long vgpu_allocated_low_gm_size
;
185 unsigned long vgpu_allocated_high_gm_size
;
188 struct intel_gvt_fence
{
189 unsigned long vgpu_allocated_fence_num
;
192 #define INTEL_GVT_MMIO_HASH_BITS 9
194 struct intel_gvt_mmio
{
196 DECLARE_HASHTABLE(mmio_info_table
, INTEL_GVT_MMIO_HASH_BITS
);
199 struct intel_gvt_firmware
{
202 bool firmware_loaded
;
205 struct intel_gvt_opregion
{
206 void __iomem
*opregion_va
;
210 #define NR_MAX_INTEL_VGPU_TYPES 20
211 struct intel_vgpu_type
{
213 unsigned int max_instance
;
214 unsigned int avail_instance
;
215 unsigned int low_gm_size
;
216 unsigned int high_gm_size
;
222 struct drm_i915_private
*dev_priv
;
223 struct idr vgpu_idr
; /* vGPU IDR pool */
225 struct intel_gvt_device_info device_info
;
226 struct intel_gvt_gm gm
;
227 struct intel_gvt_fence fence
;
228 struct intel_gvt_mmio mmio
;
229 struct intel_gvt_firmware firmware
;
230 struct intel_gvt_irq irq
;
231 struct intel_gvt_gtt gtt
;
232 struct intel_gvt_opregion opregion
;
233 struct intel_gvt_workload_scheduler scheduler
;
234 DECLARE_HASHTABLE(cmd_table
, GVT_CMD_HASH_BITS
);
235 struct intel_vgpu_type
*types
;
236 unsigned int num_types
;
238 struct task_struct
*service_thread
;
239 wait_queue_head_t service_thread_wq
;
240 unsigned long service_request
;
243 static inline struct intel_gvt
*to_gvt(struct drm_i915_private
*i915
)
249 INTEL_GVT_REQUEST_EMULATE_VBLANK
= 0,
252 static inline void intel_gvt_request_service(struct intel_gvt
*gvt
,
255 set_bit(service
, (void *)&gvt
->service_request
);
256 wake_up(&gvt
->service_thread_wq
);
259 void intel_gvt_free_firmware(struct intel_gvt
*gvt
);
260 int intel_gvt_load_firmware(struct intel_gvt
*gvt
);
262 /* Aperture/GM space definitions for GVT device */
263 #define MB_TO_BYTES(mb) ((mb) << 20ULL)
264 #define BYTES_TO_MB(b) ((b) >> 20ULL)
266 #define HOST_LOW_GM_SIZE MB_TO_BYTES(128)
267 #define HOST_HIGH_GM_SIZE MB_TO_BYTES(384)
270 /* Aperture/GM space definitions for GVT device */
271 #define gvt_aperture_sz(gvt) (gvt->dev_priv->ggtt.mappable_end)
272 #define gvt_aperture_pa_base(gvt) (gvt->dev_priv->ggtt.mappable_base)
274 #define gvt_ggtt_gm_sz(gvt) (gvt->dev_priv->ggtt.base.total)
275 #define gvt_ggtt_sz(gvt) \
276 ((gvt->dev_priv->ggtt.base.total >> PAGE_SHIFT) << 3)
277 #define gvt_hidden_sz(gvt) (gvt_ggtt_gm_sz(gvt) - gvt_aperture_sz(gvt))
279 #define gvt_aperture_gmadr_base(gvt) (0)
280 #define gvt_aperture_gmadr_end(gvt) (gvt_aperture_gmadr_base(gvt) \
281 + gvt_aperture_sz(gvt) - 1)
283 #define gvt_hidden_gmadr_base(gvt) (gvt_aperture_gmadr_base(gvt) \
284 + gvt_aperture_sz(gvt))
285 #define gvt_hidden_gmadr_end(gvt) (gvt_hidden_gmadr_base(gvt) \
286 + gvt_hidden_sz(gvt) - 1)
288 #define gvt_fence_sz(gvt) (gvt->dev_priv->num_fence_regs)
290 /* Aperture/GM space definitions for vGPU */
291 #define vgpu_aperture_offset(vgpu) ((vgpu)->gm.low_gm_node.start)
292 #define vgpu_hidden_offset(vgpu) ((vgpu)->gm.high_gm_node.start)
293 #define vgpu_aperture_sz(vgpu) ((vgpu)->gm.aperture_sz)
294 #define vgpu_hidden_sz(vgpu) ((vgpu)->gm.hidden_sz)
296 #define vgpu_aperture_pa_base(vgpu) \
297 (gvt_aperture_pa_base(vgpu->gvt) + vgpu_aperture_offset(vgpu))
299 #define vgpu_ggtt_gm_sz(vgpu) ((vgpu)->gm.aperture_sz + (vgpu)->gm.hidden_sz)
301 #define vgpu_aperture_pa_end(vgpu) \
302 (vgpu_aperture_pa_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)
304 #define vgpu_aperture_gmadr_base(vgpu) (vgpu_aperture_offset(vgpu))
305 #define vgpu_aperture_gmadr_end(vgpu) \
306 (vgpu_aperture_gmadr_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)
308 #define vgpu_hidden_gmadr_base(vgpu) (vgpu_hidden_offset(vgpu))
309 #define vgpu_hidden_gmadr_end(vgpu) \
310 (vgpu_hidden_gmadr_base(vgpu) + vgpu_hidden_sz(vgpu) - 1)
312 #define vgpu_fence_base(vgpu) (vgpu->fence.base)
313 #define vgpu_fence_sz(vgpu) (vgpu->fence.size)
315 struct intel_vgpu_creation_params
{
317 __u64 low_gm_sz
; /* in MB */
318 __u64 high_gm_sz
; /* in MB */
324 int intel_vgpu_alloc_resource(struct intel_vgpu
*vgpu
,
325 struct intel_vgpu_creation_params
*param
);
326 void intel_vgpu_free_resource(struct intel_vgpu
*vgpu
);
327 void intel_vgpu_write_fence(struct intel_vgpu
*vgpu
,
328 u32 fence
, u64 value
);
330 /* Macros for easily accessing vGPU virtual/shadow register */
331 #define vgpu_vreg(vgpu, reg) \
332 (*(u32 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
333 #define vgpu_vreg8(vgpu, reg) \
334 (*(u8 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
335 #define vgpu_vreg16(vgpu, reg) \
336 (*(u16 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
337 #define vgpu_vreg64(vgpu, reg) \
338 (*(u64 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
339 #define vgpu_sreg(vgpu, reg) \
340 (*(u32 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
341 #define vgpu_sreg8(vgpu, reg) \
342 (*(u8 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
343 #define vgpu_sreg16(vgpu, reg) \
344 (*(u16 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
345 #define vgpu_sreg64(vgpu, reg) \
346 (*(u64 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
348 #define for_each_active_vgpu(gvt, vgpu, id) \
349 idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \
350 for_each_if(vgpu->active)
352 static inline void intel_vgpu_write_pci_bar(struct intel_vgpu
*vgpu
,
353 u32 offset
, u32 val
, bool low
)
357 /* BAR offset should be 32 bits algiend */
358 offset
= rounddown(offset
, 4);
359 pval
= (u32
*)(vgpu_cfg_space(vgpu
) + offset
);
363 * only update bit 31 - bit 4,
364 * leave the bit 3 - bit 0 unchanged.
366 *pval
= (val
& GENMASK(31, 4)) | (*pval
& GENMASK(3, 0));
372 int intel_gvt_init_vgpu_types(struct intel_gvt
*gvt
);
373 void intel_gvt_clean_vgpu_types(struct intel_gvt
*gvt
);
375 struct intel_vgpu
*intel_gvt_create_vgpu(struct intel_gvt
*gvt
,
376 struct intel_vgpu_type
*type
);
377 void intel_gvt_destroy_vgpu(struct intel_vgpu
*vgpu
);
378 void intel_gvt_reset_vgpu(struct intel_vgpu
*vgpu
);
381 /* validating GM functions */
382 #define vgpu_gmadr_is_aperture(vgpu, gmadr) \
383 ((gmadr >= vgpu_aperture_gmadr_base(vgpu)) && \
384 (gmadr <= vgpu_aperture_gmadr_end(vgpu)))
386 #define vgpu_gmadr_is_hidden(vgpu, gmadr) \
387 ((gmadr >= vgpu_hidden_gmadr_base(vgpu)) && \
388 (gmadr <= vgpu_hidden_gmadr_end(vgpu)))
390 #define vgpu_gmadr_is_valid(vgpu, gmadr) \
391 ((vgpu_gmadr_is_aperture(vgpu, gmadr) || \
392 (vgpu_gmadr_is_hidden(vgpu, gmadr))))
394 #define gvt_gmadr_is_aperture(gvt, gmadr) \
395 ((gmadr >= gvt_aperture_gmadr_base(gvt)) && \
396 (gmadr <= gvt_aperture_gmadr_end(gvt)))
398 #define gvt_gmadr_is_hidden(gvt, gmadr) \
399 ((gmadr >= gvt_hidden_gmadr_base(gvt)) && \
400 (gmadr <= gvt_hidden_gmadr_end(gvt)))
402 #define gvt_gmadr_is_valid(gvt, gmadr) \
403 (gvt_gmadr_is_aperture(gvt, gmadr) || \
404 gvt_gmadr_is_hidden(gvt, gmadr))
406 bool intel_gvt_ggtt_validate_range(struct intel_vgpu
*vgpu
, u64 addr
, u32 size
);
407 int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu
*vgpu
, u64 g_addr
, u64
*h_addr
);
408 int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu
*vgpu
, u64 h_addr
, u64
*g_addr
);
409 int intel_gvt_ggtt_index_g2h(struct intel_vgpu
*vgpu
, unsigned long g_index
,
410 unsigned long *h_index
);
411 int intel_gvt_ggtt_h2g_index(struct intel_vgpu
*vgpu
, unsigned long h_index
,
412 unsigned long *g_index
);
414 int intel_vgpu_emulate_cfg_read(struct intel_vgpu
*vgpu
, unsigned int offset
,
415 void *p_data
, unsigned int bytes
);
417 int intel_vgpu_emulate_cfg_write(struct intel_vgpu
*vgpu
, unsigned int offset
,
418 void *p_data
, unsigned int bytes
);
420 void intel_gvt_clean_opregion(struct intel_gvt
*gvt
);
421 int intel_gvt_init_opregion(struct intel_gvt
*gvt
);
423 void intel_vgpu_clean_opregion(struct intel_vgpu
*vgpu
);
424 int intel_vgpu_init_opregion(struct intel_vgpu
*vgpu
, u32 gpa
);
426 int intel_vgpu_emulate_opregion_request(struct intel_vgpu
*vgpu
, u32 swsci
);
427 int setup_vgpu_mmio(struct intel_vgpu
*vgpu
);
428 void populate_pvinfo_page(struct intel_vgpu
*vgpu
);
430 struct intel_gvt_ops
{
431 int (*emulate_cfg_read
)(struct intel_vgpu
*, unsigned int, void *,
433 int (*emulate_cfg_write
)(struct intel_vgpu
*, unsigned int, void *,
435 int (*emulate_mmio_read
)(struct intel_vgpu
*, u64
, void *,
437 int (*emulate_mmio_write
)(struct intel_vgpu
*, u64
, void *,
439 struct intel_vgpu
*(*vgpu_create
)(struct intel_gvt
*,
440 struct intel_vgpu_type
*);
441 void (*vgpu_destroy
)(struct intel_vgpu
*);
442 void (*vgpu_reset
)(struct intel_vgpu
*);