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 #define GVT_MAX_VGPU 8
48 INTEL_GVT_HYPERVISOR_XEN = 0,
49 INTEL_GVT_HYPERVISOR_KVM,
52 struct intel_gvt_host {
55 struct intel_gvt_mpt *mpt;
58 extern struct intel_gvt_host intel_gvt_host;
60 /* Describe per-platform limitations. */
61 struct intel_gvt_device_info {
62 u32 max_support_vgpus;
66 unsigned long msi_cap_offset;
69 u32 gtt_entry_size_shift;
72 /* GM resources owned by a vGPU */
73 struct intel_vgpu_gm {
76 struct drm_mm_node low_gm_node;
77 struct drm_mm_node high_gm_node;
80 #define INTEL_GVT_MAX_NUM_FENCES 32
82 /* Fences owned by a vGPU */
83 struct intel_vgpu_fence {
84 struct drm_i915_fence_reg *regs[INTEL_GVT_MAX_NUM_FENCES];
89 struct intel_vgpu_mmio {
92 bool disable_warn_untrack;
95 #define INTEL_GVT_MAX_CFG_SPACE_SZ 256
96 #define INTEL_GVT_MAX_BAR_NUM 4
98 struct intel_vgpu_pci_bar {
103 struct intel_vgpu_cfg_space {
104 unsigned char virtual_cfg_space[INTEL_GVT_MAX_CFG_SPACE_SZ];
105 struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM];
108 #define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space)
110 #define INTEL_GVT_MAX_PIPE 4
112 struct intel_vgpu_irq {
113 bool irq_warn_once[INTEL_GVT_EVENT_MAX];
114 DECLARE_BITMAP(flip_done_event[INTEL_GVT_MAX_PIPE],
115 INTEL_GVT_EVENT_MAX);
118 struct intel_vgpu_opregion {
120 u32 gfn[INTEL_GVT_OPREGION_PAGES];
121 struct page *pages[INTEL_GVT_OPREGION_PAGES];
124 #define vgpu_opregion(vgpu) (&(vgpu->opregion))
126 #define INTEL_GVT_MAX_PORT 5
128 struct intel_vgpu_display {
129 struct intel_vgpu_i2c_edid i2c_edid;
130 struct intel_vgpu_port ports[INTEL_GVT_MAX_PORT];
131 struct intel_vgpu_sbi sbi;
135 struct intel_gvt *gvt;
137 unsigned long handle; /* vGPU handle used by hypervisor MPT modules */
141 struct intel_vgpu_fence fence;
142 struct intel_vgpu_gm gm;
143 struct intel_vgpu_cfg_space cfg_space;
144 struct intel_vgpu_mmio mmio;
145 struct intel_vgpu_irq irq;
146 struct intel_vgpu_gtt gtt;
147 struct intel_vgpu_opregion opregion;
148 struct intel_vgpu_display display;
151 struct intel_gvt_gm {
152 unsigned long vgpu_allocated_low_gm_size;
153 unsigned long vgpu_allocated_high_gm_size;
156 struct intel_gvt_fence {
157 unsigned long vgpu_allocated_fence_num;
160 #define INTEL_GVT_MMIO_HASH_BITS 9
162 struct intel_gvt_mmio {
164 DECLARE_HASHTABLE(mmio_info_table, INTEL_GVT_MMIO_HASH_BITS);
167 struct intel_gvt_firmware {
170 bool firmware_loaded;
173 struct intel_gvt_opregion {
182 struct drm_i915_private *dev_priv;
183 struct idr vgpu_idr; /* vGPU IDR pool */
185 struct intel_gvt_device_info device_info;
186 struct intel_gvt_gm gm;
187 struct intel_gvt_fence fence;
188 struct intel_gvt_mmio mmio;
189 struct intel_gvt_firmware firmware;
190 struct intel_gvt_irq irq;
191 struct intel_gvt_gtt gtt;
192 struct intel_gvt_opregion opregion;
194 struct task_struct *service_thread;
195 wait_queue_head_t service_thread_wq;
196 unsigned long service_request;
200 INTEL_GVT_REQUEST_EMULATE_VBLANK = 0,
203 static inline void intel_gvt_request_service(struct intel_gvt *gvt,
206 set_bit(service, (void *)&gvt->service_request);
207 wake_up(&gvt->service_thread_wq);
210 void intel_gvt_free_firmware(struct intel_gvt *gvt);
211 int intel_gvt_load_firmware(struct intel_gvt *gvt);
213 /* Aperture/GM space definitions for GVT device */
214 #define gvt_aperture_sz(gvt) (gvt->dev_priv->ggtt.mappable_end)
215 #define gvt_aperture_pa_base(gvt) (gvt->dev_priv->ggtt.mappable_base)
217 #define gvt_ggtt_gm_sz(gvt) (gvt->dev_priv->ggtt.base.total)
218 #define gvt_ggtt_sz(gvt) \
219 ((gvt->dev_priv->ggtt.base.total >> PAGE_SHIFT) << 3)
220 #define gvt_hidden_sz(gvt) (gvt_ggtt_gm_sz(gvt) - gvt_aperture_sz(gvt))
222 #define gvt_aperture_gmadr_base(gvt) (0)
223 #define gvt_aperture_gmadr_end(gvt) (gvt_aperture_gmadr_base(gvt) \
224 + gvt_aperture_sz(gvt) - 1)
226 #define gvt_hidden_gmadr_base(gvt) (gvt_aperture_gmadr_base(gvt) \
227 + gvt_aperture_sz(gvt))
228 #define gvt_hidden_gmadr_end(gvt) (gvt_hidden_gmadr_base(gvt) \
229 + gvt_hidden_sz(gvt) - 1)
231 #define gvt_fence_sz(gvt) (gvt->dev_priv->num_fence_regs)
233 /* Aperture/GM space definitions for vGPU */
234 #define vgpu_aperture_offset(vgpu) ((vgpu)->gm.low_gm_node.start)
235 #define vgpu_hidden_offset(vgpu) ((vgpu)->gm.high_gm_node.start)
236 #define vgpu_aperture_sz(vgpu) ((vgpu)->gm.aperture_sz)
237 #define vgpu_hidden_sz(vgpu) ((vgpu)->gm.hidden_sz)
239 #define vgpu_aperture_pa_base(vgpu) \
240 (gvt_aperture_pa_base(vgpu->gvt) + vgpu_aperture_offset(vgpu))
242 #define vgpu_ggtt_gm_sz(vgpu) ((vgpu)->gm.aperture_sz + (vgpu)->gm.hidden_sz)
244 #define vgpu_aperture_pa_end(vgpu) \
245 (vgpu_aperture_pa_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)
247 #define vgpu_aperture_gmadr_base(vgpu) (vgpu_aperture_offset(vgpu))
248 #define vgpu_aperture_gmadr_end(vgpu) \
249 (vgpu_aperture_gmadr_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)
251 #define vgpu_hidden_gmadr_base(vgpu) (vgpu_hidden_offset(vgpu))
252 #define vgpu_hidden_gmadr_end(vgpu) \
253 (vgpu_hidden_gmadr_base(vgpu) + vgpu_hidden_sz(vgpu) - 1)
255 #define vgpu_fence_base(vgpu) (vgpu->fence.base)
256 #define vgpu_fence_sz(vgpu) (vgpu->fence.size)
258 struct intel_vgpu_creation_params {
260 __u64 low_gm_sz; /* in MB */
261 __u64 high_gm_sz; /* in MB */
267 int intel_vgpu_alloc_resource(struct intel_vgpu *vgpu,
268 struct intel_vgpu_creation_params *param);
269 void intel_vgpu_free_resource(struct intel_vgpu *vgpu);
270 void intel_vgpu_write_fence(struct intel_vgpu *vgpu,
271 u32 fence, u64 value);
273 /* Macros for easily accessing vGPU virtual/shadow register */
274 #define vgpu_vreg(vgpu, reg) \
275 (*(u32 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
276 #define vgpu_vreg8(vgpu, reg) \
277 (*(u8 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
278 #define vgpu_vreg16(vgpu, reg) \
279 (*(u16 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
280 #define vgpu_vreg64(vgpu, reg) \
281 (*(u64 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
282 #define vgpu_sreg(vgpu, reg) \
283 (*(u32 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
284 #define vgpu_sreg8(vgpu, reg) \
285 (*(u8 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
286 #define vgpu_sreg16(vgpu, reg) \
287 (*(u16 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
288 #define vgpu_sreg64(vgpu, reg) \
289 (*(u64 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
291 #define for_each_active_vgpu(gvt, vgpu, id) \
292 idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \
293 for_each_if(vgpu->active)
295 static inline void intel_vgpu_write_pci_bar(struct intel_vgpu *vgpu,
296 u32 offset, u32 val, bool low)
300 /* BAR offset should be 32 bits algiend */
301 offset = rounddown(offset, 4);
302 pval = (u32 *)(vgpu_cfg_space(vgpu) + offset);
306 * only update bit 31 - bit 4,
307 * leave the bit 3 - bit 0 unchanged.
309 *pval = (val & GENMASK(31, 4)) | (*pval & GENMASK(3, 0));
313 struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt,
314 struct intel_vgpu_creation_params *
317 void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu);
319 /* validating GM functions */
320 #define vgpu_gmadr_is_aperture(vgpu, gmadr) \
321 ((gmadr >= vgpu_aperture_gmadr_base(vgpu)) && \
322 (gmadr <= vgpu_aperture_gmadr_end(vgpu)))
324 #define vgpu_gmadr_is_hidden(vgpu, gmadr) \
325 ((gmadr >= vgpu_hidden_gmadr_base(vgpu)) && \
326 (gmadr <= vgpu_hidden_gmadr_end(vgpu)))
328 #define vgpu_gmadr_is_valid(vgpu, gmadr) \
329 ((vgpu_gmadr_is_aperture(vgpu, gmadr) || \
330 (vgpu_gmadr_is_hidden(vgpu, gmadr))))
332 #define gvt_gmadr_is_aperture(gvt, gmadr) \
333 ((gmadr >= gvt_aperture_gmadr_base(gvt)) && \
334 (gmadr <= gvt_aperture_gmadr_end(gvt)))
336 #define gvt_gmadr_is_hidden(gvt, gmadr) \
337 ((gmadr >= gvt_hidden_gmadr_base(gvt)) && \
338 (gmadr <= gvt_hidden_gmadr_end(gvt)))
340 #define gvt_gmadr_is_valid(gvt, gmadr) \
341 (gvt_gmadr_is_aperture(gvt, gmadr) || \
342 gvt_gmadr_is_hidden(gvt, gmadr))
344 bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size);
345 int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu *vgpu, u64 g_addr, u64 *h_addr);
346 int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu *vgpu, u64 h_addr, u64 *g_addr);
347 int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index,
348 unsigned long *h_index);
349 int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index,
350 unsigned long *g_index);
352 int intel_vgpu_emulate_cfg_read(void *__vgpu, unsigned int offset,
353 void *p_data, unsigned int bytes);
355 int intel_vgpu_emulate_cfg_write(void *__vgpu, unsigned int offset,
356 void *p_data, unsigned int bytes);
358 void intel_gvt_clean_opregion(struct intel_gvt *gvt);
359 int intel_gvt_init_opregion(struct intel_gvt *gvt);
361 void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu);
362 int intel_vgpu_init_opregion(struct intel_vgpu *vgpu, u32 gpa);
364 int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci);