/* * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Authors: * Kevin Tian * Eddie Dong * * Contributors: * Niu Bing * Zhi Wang * */ #ifndef _GVT_H_ #define _GVT_H_ #include #include #include #include #include "i915_drv.h" #include "intel_gvt.h" #include "debug.h" #include "mmio.h" #include "reg.h" #include "interrupt.h" #include "gtt.h" #include "display.h" #include "edid.h" #include "execlist.h" #include "scheduler.h" #include "sched_policy.h" #include "mmio_context.h" #include "cmd_parser.h" #include "fb_decoder.h" #include "dmabuf.h" #include "page_track.h" #define GVT_MAX_VGPU 8 /* Describe per-platform limitations. */ struct intel_gvt_device_info { u32 max_support_vgpus; u32 cfg_space_size; u32 mmio_size; u32 mmio_bar; unsigned long msi_cap_offset; u32 gtt_start_offset; u32 gtt_entry_size; u32 gtt_entry_size_shift; int gmadr_bytes_in_cmd; u32 max_surface_size; }; /* GM resources owned by a vGPU */ struct intel_vgpu_gm { u64 aperture_sz; u64 hidden_sz; struct drm_mm_node low_gm_node; struct drm_mm_node high_gm_node; }; #define INTEL_GVT_MAX_NUM_FENCES 32 /* Fences owned by a vGPU */ struct intel_vgpu_fence { struct i915_fence_reg *regs[INTEL_GVT_MAX_NUM_FENCES]; u32 base; u32 size; }; struct intel_vgpu_mmio { void *vreg; }; #define INTEL_GVT_MAX_BAR_NUM 4 struct intel_vgpu_pci_bar { u64 size; bool tracked; }; struct intel_vgpu_cfg_space { unsigned char virtual_cfg_space[PCI_CFG_SPACE_EXP_SIZE]; struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM]; u32 pmcsr_off; }; #define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space) struct intel_vgpu_irq { bool irq_warn_once[INTEL_GVT_EVENT_MAX]; DECLARE_BITMAP(flip_done_event[I915_MAX_PIPES], INTEL_GVT_EVENT_MAX); }; struct intel_vgpu_opregion { bool mapped; void *va; u32 gfn[INTEL_GVT_OPREGION_PAGES]; }; #define vgpu_opregion(vgpu) (&(vgpu->opregion)) struct intel_vgpu_display { struct intel_vgpu_i2c_edid i2c_edid; struct intel_vgpu_port ports[I915_MAX_PORTS]; struct intel_vgpu_sbi sbi; enum port port_num; }; struct vgpu_sched_ctl { int weight; }; enum { INTEL_VGPU_EXECLIST_SUBMISSION = 1, INTEL_VGPU_GUC_SUBMISSION, }; struct intel_vgpu_submission_ops { const char *name; int (*init)(struct intel_vgpu *vgpu, intel_engine_mask_t engine_mask); void (*clean)(struct intel_vgpu *vgpu, intel_engine_mask_t engine_mask); void (*reset)(struct intel_vgpu *vgpu, intel_engine_mask_t engine_mask); }; struct intel_vgpu_submission { struct intel_vgpu_execlist execlist[I915_NUM_ENGINES]; struct list_head workload_q_head[I915_NUM_ENGINES]; struct intel_context *shadow[I915_NUM_ENGINES]; struct kmem_cache *workloads; atomic_t running_workload_num; union { u64 i915_context_pml4; u64 i915_context_pdps[GEN8_3LVL_PDPES]; }; DECLARE_BITMAP(shadow_ctx_desc_updated, I915_NUM_ENGINES); DECLARE_BITMAP(tlb_handle_pending, I915_NUM_ENGINES); void *ring_scan_buffer[I915_NUM_ENGINES]; int ring_scan_buffer_size[I915_NUM_ENGINES]; const struct intel_vgpu_submission_ops *ops; int virtual_submission_interface; bool active; struct { u32 lrca; bool valid; u64 ring_context_gpa; } last_ctx[I915_NUM_ENGINES]; }; #define KVMGT_DEBUGFS_FILENAME "kvmgt_nr_cache_entries" struct intel_vgpu { struct vfio_device vfio_device; struct intel_gvt *gvt; struct mutex vgpu_lock; int id; bool active; bool attached; bool pv_notified; bool failsafe; unsigned int resetting_eng; /* Both sched_data and sched_ctl can be seen a part of the global gvt * scheduler structure. So below 2 vgpu data are protected * by sched_lock, not vgpu_lock. */ void *sched_data; struct vgpu_sched_ctl sched_ctl; struct intel_vgpu_fence fence; struct intel_vgpu_gm gm; struct intel_vgpu_cfg_space cfg_space; struct intel_vgpu_mmio mmio; struct intel_vgpu_irq irq; struct intel_vgpu_gtt gtt; struct intel_vgpu_opregion opregion; struct intel_vgpu_display display; struct intel_vgpu_submission submission; struct radix_tree_root page_track_tree; u32 hws_pga[I915_NUM_ENGINES]; /* Set on PCI_D3, reset on DMLR, not reflecting the actual PM state */ bool d3_entered; struct dentry *debugfs; struct list_head dmabuf_obj_list_head; struct mutex dmabuf_lock; struct idr object_idr; struct intel_vgpu_vblank_timer vblank_timer; u32 scan_nonprivbb; struct vfio_region *region; int num_regions; struct eventfd_ctx *intx_trigger; struct eventfd_ctx *msi_trigger; /* * Two caches are used to avoid mapping duplicated pages (eg. * scratch pages). This help to reduce dma setup overhead. */ struct rb_root gfn_cache; struct rb_root dma_addr_cache; unsigned long nr_cache_entries; struct mutex cache_lock; atomic_t released; struct kvm_page_track_notifier_node track_node; #define NR_BKT (1 << 18) struct hlist_head ptable[NR_BKT]; #undef NR_BKT }; /* validating GM healthy status*/ #define vgpu_is_vm_unhealthy(ret_val) \ (((ret_val) == -EBADRQC) || ((ret_val) == -EFAULT)) struct intel_gvt_gm { unsigned long vgpu_allocated_low_gm_size; unsigned long vgpu_allocated_high_gm_size; }; struct intel_gvt_fence { unsigned long vgpu_allocated_fence_num; }; /* Special MMIO blocks. */ struct gvt_mmio_block { unsigned int device; i915_reg_t offset; unsigned int size; gvt_mmio_func read; gvt_mmio_func write; }; #define INTEL_GVT_MMIO_HASH_BITS 11 struct intel_gvt_mmio { u16 *mmio_attribute; /* Register contains RO bits */ #define F_RO (1 << 0) /* Register contains graphics address */ #define F_GMADR (1 << 1) /* Mode mask registers with high 16 bits as the mask bits */ #define F_MODE_MASK (1 << 2) /* This reg can be accessed by GPU commands */ #define F_CMD_ACCESS (1 << 3) /* This reg has been accessed by a VM */ #define F_ACCESSED (1 << 4) /* This reg requires save & restore during host PM suspend/resume */ #define F_PM_SAVE (1 << 5) /* This reg could be accessed by unaligned address */ #define F_UNALIGN (1 << 6) /* This reg is in GVT's mmio save-restor list and in hardware * logical context image */ #define F_SR_IN_CTX (1 << 7) /* Value of command write of this reg needs to be patched */ #define F_CMD_WRITE_PATCH (1 << 8) struct gvt_mmio_block *mmio_block; unsigned int num_mmio_block; DECLARE_HASHTABLE(mmio_info_table, INTEL_GVT_MMIO_HASH_BITS); unsigned long num_tracked_mmio; }; struct intel_gvt_firmware { void *cfg_space; void *mmio; bool firmware_loaded; }; struct intel_vgpu_config { unsigned int low_mm; unsigned int high_mm; unsigned int fence; /* * A vGPU with a weight of 8 will get twice as much GPU as a vGPU with * a weight of 4 on a contended host, different vGPU type has different * weight set. Legal weights range from 1 to 16. */ unsigned int weight; enum intel_vgpu_edid edid; const char *name; }; struct intel_vgpu_type { struct mdev_type type; char name[16]; const struct intel_vgpu_config *conf; unsigned int avail_instance; }; struct intel_gvt { /* GVT scope lock, protect GVT itself, and all resource currently * not yet protected by special locks(vgpu and scheduler lock). */ struct mutex lock; /* scheduler scope lock, protect gvt and vgpu schedule related data */ struct mutex sched_lock; struct intel_gt *gt; struct idr vgpu_idr; /* vGPU IDR pool */ struct intel_gvt_device_info device_info; struct intel_gvt_gm gm; struct intel_gvt_fence fence; struct intel_gvt_mmio mmio; struct intel_gvt_firmware firmware; struct intel_gvt_irq irq; struct intel_gvt_gtt gtt; struct intel_gvt_workload_scheduler scheduler; struct notifier_block shadow_ctx_notifier_block[I915_NUM_ENGINES]; DECLARE_HASHTABLE(cmd_table, GVT_CMD_HASH_BITS); struct mdev_parent parent; struct mdev_type **mdev_types; struct intel_vgpu_type *types; unsigned int num_types; struct intel_vgpu *idle_vgpu; struct task_struct *service_thread; wait_queue_head_t service_thread_wq; /* service_request is always used in bit operation, we should always * use it with atomic bit ops so that no need to use gvt big lock. */ unsigned long service_request; struct { struct engine_mmio *mmio; int ctx_mmio_count[I915_NUM_ENGINES]; u32 *tlb_mmio_offset_list; u32 tlb_mmio_offset_list_cnt; u32 *mocs_mmio_offset_list; u32 mocs_mmio_offset_list_cnt; } engine_mmio_list; bool is_reg_whitelist_updated; struct dentry *debugfs_root; }; static inline struct intel_gvt *to_gvt(struct drm_i915_private *i915) { return i915->gvt; } enum { /* Scheduling trigger by timer */ INTEL_GVT_REQUEST_SCHED = 0, /* Scheduling trigger by event */ INTEL_GVT_REQUEST_EVENT_SCHED = 1, /* per-vGPU vblank emulation request */ INTEL_GVT_REQUEST_EMULATE_VBLANK = 2, INTEL_GVT_REQUEST_EMULATE_VBLANK_MAX = INTEL_GVT_REQUEST_EMULATE_VBLANK + GVT_MAX_VGPU, }; static inline void intel_gvt_request_service(struct intel_gvt *gvt, int service) { set_bit(service, (void *)&gvt->service_request); wake_up(&gvt->service_thread_wq); } void intel_gvt_free_firmware(struct intel_gvt *gvt); int intel_gvt_load_firmware(struct intel_gvt *gvt); /* Aperture/GM space definitions for GVT device */ #define MB_TO_BYTES(mb) ((mb) << 20ULL) #define BYTES_TO_MB(b) ((b) >> 20ULL) #define HOST_LOW_GM_SIZE MB_TO_BYTES(128) #define HOST_HIGH_GM_SIZE MB_TO_BYTES(384) #define HOST_FENCE 4 #define gvt_to_ggtt(gvt) ((gvt)->gt->ggtt) /* Aperture/GM space definitions for GVT device */ #define gvt_aperture_sz(gvt) gvt_to_ggtt(gvt)->mappable_end #define gvt_aperture_pa_base(gvt) gvt_to_ggtt(gvt)->gmadr.start #define gvt_ggtt_gm_sz(gvt) gvt_to_ggtt(gvt)->vm.total #define gvt_ggtt_sz(gvt) (gvt_to_ggtt(gvt)->vm.total >> PAGE_SHIFT << 3) #define gvt_hidden_sz(gvt) (gvt_ggtt_gm_sz(gvt) - gvt_aperture_sz(gvt)) #define gvt_aperture_gmadr_base(gvt) (0) #define gvt_aperture_gmadr_end(gvt) (gvt_aperture_gmadr_base(gvt) \ + gvt_aperture_sz(gvt) - 1) #define gvt_hidden_gmadr_base(gvt) (gvt_aperture_gmadr_base(gvt) \ + gvt_aperture_sz(gvt)) #define gvt_hidden_gmadr_end(gvt) (gvt_hidden_gmadr_base(gvt) \ + gvt_hidden_sz(gvt) - 1) #define gvt_fence_sz(gvt) (gvt_to_ggtt(gvt)->num_fences) /* Aperture/GM space definitions for vGPU */ #define vgpu_aperture_offset(vgpu) ((vgpu)->gm.low_gm_node.start) #define vgpu_hidden_offset(vgpu) ((vgpu)->gm.high_gm_node.start) #define vgpu_aperture_sz(vgpu) ((vgpu)->gm.aperture_sz) #define vgpu_hidden_sz(vgpu) ((vgpu)->gm.hidden_sz) #define vgpu_aperture_pa_base(vgpu) \ (gvt_aperture_pa_base(vgpu->gvt) + vgpu_aperture_offset(vgpu)) #define vgpu_ggtt_gm_sz(vgpu) ((vgpu)->gm.aperture_sz + (vgpu)->gm.hidden_sz) #define vgpu_aperture_pa_end(vgpu) \ (vgpu_aperture_pa_base(vgpu) + vgpu_aperture_sz(vgpu) - 1) #define vgpu_aperture_gmadr_base(vgpu) (vgpu_aperture_offset(vgpu)) #define vgpu_aperture_gmadr_end(vgpu) \ (vgpu_aperture_gmadr_base(vgpu) + vgpu_aperture_sz(vgpu) - 1) #define vgpu_hidden_gmadr_base(vgpu) (vgpu_hidden_offset(vgpu)) #define vgpu_hidden_gmadr_end(vgpu) \ (vgpu_hidden_gmadr_base(vgpu) + vgpu_hidden_sz(vgpu) - 1) #define vgpu_fence_base(vgpu) (vgpu->fence.base) #define vgpu_fence_sz(vgpu) (vgpu->fence.size) /* ring context size i.e. the first 0x50 dwords*/ #define RING_CTX_SIZE 320 int intel_vgpu_alloc_resource(struct intel_vgpu *vgpu, const struct intel_vgpu_config *conf); void intel_vgpu_reset_resource(struct intel_vgpu *vgpu); void intel_vgpu_free_resource(struct intel_vgpu *vgpu); void intel_vgpu_write_fence(struct intel_vgpu *vgpu, u32 fence, u64 value); /* Macros for easily accessing vGPU virtual/shadow register. Explicitly seperate use for typed MMIO reg or real offset.*/ #define vgpu_vreg_t(vgpu, reg) \ (*(u32 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg))) #define vgpu_vreg(vgpu, offset) \ (*(u32 *)(vgpu->mmio.vreg + (offset))) #define vgpu_vreg64_t(vgpu, reg) \ (*(u64 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg))) #define vgpu_vreg64(vgpu, offset) \ (*(u64 *)(vgpu->mmio.vreg + (offset))) #define for_each_active_vgpu(gvt, vgpu, id) \ idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \ for_each_if(vgpu->active) static inline void intel_vgpu_write_pci_bar(struct intel_vgpu *vgpu, u32 offset, u32 val, bool low) { u32 *pval; /* BAR offset should be 32 bits algiend */ offset = rounddown(offset, 4); pval = (u32 *)(vgpu_cfg_space(vgpu) + offset); if (low) { /* * only update bit 31 - bit 4, * leave the bit 3 - bit 0 unchanged. */ *pval = (val & GENMASK(31, 4)) | (*pval & GENMASK(3, 0)); } else { *pval = val; } } int intel_gvt_init_vgpu_types(struct intel_gvt *gvt); void intel_gvt_clean_vgpu_types(struct intel_gvt *gvt); struct intel_vgpu *intel_gvt_create_idle_vgpu(struct intel_gvt *gvt); void intel_gvt_destroy_idle_vgpu(struct intel_vgpu *vgpu); int intel_gvt_create_vgpu(struct intel_vgpu *vgpu, const struct intel_vgpu_config *conf); void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu); void intel_gvt_release_vgpu(struct intel_vgpu *vgpu); void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr, intel_engine_mask_t engine_mask); void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu); void intel_gvt_activate_vgpu(struct intel_vgpu *vgpu); void intel_gvt_deactivate_vgpu(struct intel_vgpu *vgpu); int intel_gvt_set_opregion(struct intel_vgpu *vgpu); int intel_gvt_set_edid(struct intel_vgpu *vgpu, int port_num); /* validating GM functions */ #define vgpu_gmadr_is_aperture(vgpu, gmadr) \ ((gmadr >= vgpu_aperture_gmadr_base(vgpu)) && \ (gmadr <= vgpu_aperture_gmadr_end(vgpu))) #define vgpu_gmadr_is_hidden(vgpu, gmadr) \ ((gmadr >= vgpu_hidden_gmadr_base(vgpu)) && \ (gmadr <= vgpu_hidden_gmadr_end(vgpu))) #define vgpu_gmadr_is_valid(vgpu, gmadr) \ ((vgpu_gmadr_is_aperture(vgpu, gmadr) || \ (vgpu_gmadr_is_hidden(vgpu, gmadr)))) #define gvt_gmadr_is_aperture(gvt, gmadr) \ ((gmadr >= gvt_aperture_gmadr_base(gvt)) && \ (gmadr <= gvt_aperture_gmadr_end(gvt))) #define gvt_gmadr_is_hidden(gvt, gmadr) \ ((gmadr >= gvt_hidden_gmadr_base(gvt)) && \ (gmadr <= gvt_hidden_gmadr_end(gvt))) #define gvt_gmadr_is_valid(gvt, gmadr) \ (gvt_gmadr_is_aperture(gvt, gmadr) || \ gvt_gmadr_is_hidden(gvt, gmadr)) bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size); int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu *vgpu, u64 g_addr, u64 *h_addr); int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu *vgpu, u64 h_addr, u64 *g_addr); int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index, unsigned long *h_index); int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index, unsigned long *g_index); void intel_vgpu_init_cfg_space(struct intel_vgpu *vgpu, bool primary); void intel_vgpu_reset_cfg_space(struct intel_vgpu *vgpu); int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes); int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes); void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected); static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar) { /* We are 64bit bar. */ return (*(u64 *)(vgpu->cfg_space.virtual_cfg_space + bar)) & PCI_BASE_ADDRESS_MEM_MASK; } void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu); int intel_vgpu_init_opregion(struct intel_vgpu *vgpu); int intel_vgpu_opregion_base_write_handler(struct intel_vgpu *vgpu, u32 gpa); int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci); void populate_pvinfo_page(struct intel_vgpu *vgpu); int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload); void enter_failsafe_mode(struct intel_vgpu *vgpu, int reason); void intel_vgpu_detach_regions(struct intel_vgpu *vgpu); enum { GVT_FAILSAFE_UNSUPPORTED_GUEST, GVT_FAILSAFE_INSUFFICIENT_RESOURCE, GVT_FAILSAFE_GUEST_ERR, }; static inline void mmio_hw_access_pre(struct intel_gt *gt) { intel_runtime_pm_get(gt->uncore->rpm); } static inline void mmio_hw_access_post(struct intel_gt *gt) { intel_runtime_pm_put_unchecked(gt->uncore->rpm); } /** * intel_gvt_mmio_set_accessed - mark a MMIO has been accessed * @gvt: a GVT device * @offset: register offset * */ static inline void intel_gvt_mmio_set_accessed( struct intel_gvt *gvt, unsigned int offset) { gvt->mmio.mmio_attribute[offset >> 2] |= F_ACCESSED; } /** * intel_gvt_mmio_is_cmd_accessible - if a MMIO could be accessed by command * @gvt: a GVT device * @offset: register offset * * Returns: * True if an MMIO is able to be accessed by GPU commands */ static inline bool intel_gvt_mmio_is_cmd_accessible( struct intel_gvt *gvt, unsigned int offset) { return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_ACCESS; } /** * intel_gvt_mmio_set_cmd_accessible - * mark a MMIO could be accessible by command * @gvt: a GVT device * @offset: register offset * */ static inline void intel_gvt_mmio_set_cmd_accessible( struct intel_gvt *gvt, unsigned int offset) { gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_ACCESS; } /** * intel_gvt_mmio_is_unalign - mark a MMIO could be accessed unaligned * @gvt: a GVT device * @offset: register offset * */ static inline bool intel_gvt_mmio_is_unalign( struct intel_gvt *gvt, unsigned int offset) { return gvt->mmio.mmio_attribute[offset >> 2] & F_UNALIGN; } /** * intel_gvt_mmio_has_mode_mask - if a MMIO has a mode mask * @gvt: a GVT device * @offset: register offset * * Returns: * True if a MMIO has a mode mask in its higher 16 bits, false if it isn't. * */ static inline bool intel_gvt_mmio_has_mode_mask( struct intel_gvt *gvt, unsigned int offset) { return gvt->mmio.mmio_attribute[offset >> 2] & F_MODE_MASK; } /** * intel_gvt_mmio_is_sr_in_ctx - * check if an MMIO has F_SR_IN_CTX mask * @gvt: a GVT device * @offset: register offset * * Returns: * True if an MMIO has an F_SR_IN_CTX mask, false if it isn't. * */ static inline bool intel_gvt_mmio_is_sr_in_ctx( struct intel_gvt *gvt, unsigned int offset) { return gvt->mmio.mmio_attribute[offset >> 2] & F_SR_IN_CTX; } /** * intel_gvt_mmio_set_sr_in_ctx - * mask an MMIO in GVT's mmio save-restore list and also * in hardware logical context image * @gvt: a GVT device * @offset: register offset * */ static inline void intel_gvt_mmio_set_sr_in_ctx( struct intel_gvt *gvt, unsigned int offset) { gvt->mmio.mmio_attribute[offset >> 2] |= F_SR_IN_CTX; } void intel_gvt_debugfs_add_vgpu(struct intel_vgpu *vgpu); /** * intel_gvt_mmio_set_cmd_write_patch - * mark an MMIO if its cmd write needs to be * patched * @gvt: a GVT device * @offset: register offset * */ static inline void intel_gvt_mmio_set_cmd_write_patch( struct intel_gvt *gvt, unsigned int offset) { gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_WRITE_PATCH; } /** * intel_gvt_mmio_is_cmd_write_patch - check if an mmio's cmd access needs to * be patched * @gvt: a GVT device * @offset: register offset * * Returns: * True if GPU commmand write to an MMIO should be patched */ static inline bool intel_gvt_mmio_is_cmd_write_patch( struct intel_gvt *gvt, unsigned int offset) { return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_WRITE_PATCH; } /** * intel_gvt_read_gpa - copy data from GPA to host data buffer * @vgpu: a vGPU * @gpa: guest physical address * @buf: host data buffer * @len: data length * * Returns: * Zero on success, negative error code if failed. */ static inline int intel_gvt_read_gpa(struct intel_vgpu *vgpu, unsigned long gpa, void *buf, unsigned long len) { if (!vgpu->attached) return -ESRCH; return vfio_dma_rw(&vgpu->vfio_device, gpa, buf, len, false); } /** * intel_gvt_write_gpa - copy data from host data buffer to GPA * @vgpu: a vGPU * @gpa: guest physical address * @buf: host data buffer * @len: data length * * Returns: * Zero on success, negative error code if failed. */ static inline int intel_gvt_write_gpa(struct intel_vgpu *vgpu, unsigned long gpa, void *buf, unsigned long len) { if (!vgpu->attached) return -ESRCH; return vfio_dma_rw(&vgpu->vfio_device, gpa, buf, len, true); } void intel_gvt_debugfs_remove_vgpu(struct intel_vgpu *vgpu); void intel_gvt_debugfs_init(struct intel_gvt *gvt); void intel_gvt_debugfs_clean(struct intel_gvt *gvt); int intel_gvt_page_track_add(struct intel_vgpu *info, u64 gfn); int intel_gvt_page_track_remove(struct intel_vgpu *info, u64 gfn); int intel_gvt_dma_pin_guest_page(struct intel_vgpu *vgpu, dma_addr_t dma_addr); int intel_gvt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn, unsigned long size, dma_addr_t *dma_addr); void intel_gvt_dma_unmap_guest_page(struct intel_vgpu *vgpu, dma_addr_t dma_addr); #include "trace.h" #endif