| /* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include "kgsl.h" |
| #include "kgsl_sharedmem.h" |
| #include "kgsl_snapshot.h" |
| |
| #include "adreno.h" |
| #include "adreno_pm4types.h" |
| #include "a3xx_reg.h" |
| #include "adreno_cp_parser.h" |
| #include "adreno_snapshot.h" |
| #include "adreno_a5xx.h" |
| |
| #define VPC_MEMORY_BANKS 4 |
| |
| /* Maintain a list of the objects we see during parsing */ |
| |
| #define SNAPSHOT_OBJ_BUFSIZE 64 |
| |
| /* Used to print error message if an IB has too many objects in it */ |
| static int ib_max_objs; |
| |
| struct snapshot_rb_params { |
| struct kgsl_snapshot *snapshot; |
| struct adreno_ringbuffer *rb; |
| }; |
| |
| /* Keep track of how many bytes are frozen after a snapshot and tell the user */ |
| static size_t snapshot_frozen_objsize; |
| |
| static struct kgsl_snapshot_object objbuf[SNAPSHOT_OBJ_BUFSIZE]; |
| |
| /* Pointer to the next open entry in the object list */ |
| static unsigned int objbufptr; |
| |
| static inline int adreno_rb_ctxtswitch(struct adreno_device *adreno_dev, |
| unsigned int *cmd) |
| { |
| return cmd[0] == cp_packet(adreno_dev, CP_NOP, 1) && |
| cmd[1] == KGSL_CONTEXT_TO_MEM_IDENTIFIER; |
| } |
| |
| /* Push a new buffer object onto the list */ |
| void kgsl_snapshot_push_object(struct kgsl_process_private *process, |
| uint64_t gpuaddr, uint64_t dwords) |
| { |
| int index; |
| struct kgsl_mem_entry *entry; |
| |
| if (process == NULL) |
| return; |
| |
| /* |
| * Sometimes IBs can be reused in the same dump. Because we parse from |
| * oldest to newest, if we come across an IB that has already been used, |
| * assume that it has been reused and update the list with the newest |
| * size. |
| */ |
| |
| for (index = 0; index < objbufptr; index++) { |
| if (objbuf[index].gpuaddr == gpuaddr && |
| objbuf[index].entry->priv == process) { |
| |
| objbuf[index].size = max_t(uint64_t, |
| objbuf[index].size, |
| dwords << 2); |
| return; |
| } |
| } |
| |
| if (objbufptr == SNAPSHOT_OBJ_BUFSIZE) { |
| KGSL_CORE_ERR("snapshot: too many snapshot objects\n"); |
| return; |
| } |
| |
| entry = kgsl_sharedmem_find(process, gpuaddr); |
| if (entry == NULL) { |
| KGSL_CORE_ERR("snapshot: Can't find entry for 0x%016llX\n", |
| gpuaddr); |
| return; |
| } |
| |
| if (!kgsl_gpuaddr_in_memdesc(&entry->memdesc, gpuaddr, dwords << 2)) { |
| KGSL_CORE_ERR("snapshot: Mem entry 0x%016llX is too small\n", |
| gpuaddr); |
| kgsl_mem_entry_put(entry); |
| return; |
| } |
| |
| /* Put it on the list of things to parse */ |
| objbuf[objbufptr].gpuaddr = gpuaddr; |
| objbuf[objbufptr].size = dwords << 2; |
| objbuf[objbufptr++].entry = entry; |
| } |
| |
| /* |
| * Returns index of the specified object is already on the list of buffers |
| * to be dumped |
| */ |
| |
| static int find_object(uint64_t gpuaddr, struct kgsl_process_private *process) |
| { |
| int index; |
| |
| for (index = 0; index < objbufptr; index++) { |
| if (objbuf[index].gpuaddr == gpuaddr && |
| objbuf[index].entry->priv == process) |
| return index; |
| } |
| return -ENOENT; |
| } |
| |
| /* |
| * snapshot_freeze_obj_list() - Take a list of ib objects and freeze their |
| * memory for snapshot |
| * @snapshot: The snapshot data. |
| * @process: The process to which the IB belongs |
| * @ib_obj_list: List of the IB objects |
| * |
| * Returns 0 on success else error code |
| */ |
| static int snapshot_freeze_obj_list(struct kgsl_snapshot *snapshot, |
| struct kgsl_process_private *process, |
| struct adreno_ib_object_list *ib_obj_list) |
| { |
| int ret = 0; |
| struct adreno_ib_object *ib_objs; |
| int i; |
| |
| for (i = 0; i < ib_obj_list->num_objs; i++) { |
| int temp_ret; |
| int index; |
| int freeze = 1; |
| |
| ib_objs = &(ib_obj_list->obj_list[i]); |
| /* Make sure this object is not going to be saved statically */ |
| for (index = 0; index < objbufptr; index++) { |
| if ((objbuf[index].gpuaddr <= ib_objs->gpuaddr) && |
| ((objbuf[index].gpuaddr + |
| (objbuf[index].size)) >= |
| (ib_objs->gpuaddr + ib_objs->size)) && |
| (objbuf[index].entry->priv == process)) { |
| freeze = 0; |
| break; |
| } |
| } |
| |
| if (freeze) { |
| temp_ret = kgsl_snapshot_get_object(snapshot, |
| process, ib_objs->gpuaddr, |
| ib_objs->size, |
| ib_objs->snapshot_obj_type); |
| if (temp_ret < 0) { |
| if (ret >= 0) |
| ret = temp_ret; |
| } else { |
| snapshot_frozen_objsize += temp_ret; |
| } |
| } |
| } |
| return ret; |
| } |
| |
| /* |
| * We want to store the last executed IB1 and IB2 in the static region to ensure |
| * that we get at least some information out of the snapshot even if we can't |
| * access the dynamic data from the sysfs file. Push all other IBs on the |
| * dynamic list |
| */ |
| static inline void parse_ib(struct kgsl_device *device, |
| struct kgsl_snapshot *snapshot, |
| struct kgsl_process_private *process, |
| uint64_t gpuaddr, uint64_t dwords) |
| { |
| struct adreno_ib_object_list *ib_obj_list; |
| |
| /* |
| * Check the IB address - if it is either the last executed IB1 |
| * then push it into the static blob otherwise put it in the dynamic |
| * list |
| */ |
| if (gpuaddr == snapshot->ib1base) { |
| kgsl_snapshot_push_object(process, gpuaddr, dwords); |
| return; |
| } |
| |
| if (kgsl_snapshot_have_object(snapshot, process, |
| gpuaddr, dwords << 2)) |
| return; |
| |
| if (-E2BIG == adreno_ib_create_object_list(device, process, |
| gpuaddr, dwords, snapshot->ib2base, |
| &ib_obj_list)) |
| ib_max_objs = 1; |
| |
| if (ib_obj_list) |
| kgsl_snapshot_add_ib_obj_list(snapshot, ib_obj_list); |
| |
| } |
| |
| static inline bool iommu_is_setstate_addr(struct kgsl_device *device, |
| uint64_t gpuaddr, uint64_t size) |
| { |
| struct kgsl_iommu *iommu = KGSL_IOMMU_PRIV(device); |
| |
| if (kgsl_mmu_get_mmutype(device) != KGSL_MMU_TYPE_IOMMU) |
| return false; |
| |
| return kgsl_gpuaddr_in_memdesc(&iommu->setstate, gpuaddr, |
| size); |
| } |
| |
| static void dump_all_ibs(struct kgsl_device *device, |
| struct adreno_ringbuffer *rb, |
| struct kgsl_snapshot *snapshot) |
| { |
| int index = 0; |
| unsigned int *rbptr; |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| |
| rbptr = rb->buffer_desc.hostptr; |
| |
| for (index = 0; index < KGSL_RB_DWORDS;) { |
| |
| if (adreno_cmd_is_ib(adreno_dev, rbptr[index])) { |
| uint64_t ibaddr; |
| uint64_t ibsize; |
| |
| if (ADRENO_LEGACY_PM4(adreno_dev)) { |
| ibaddr = rbptr[index + 1]; |
| ibsize = rbptr[index + 2]; |
| index += 3; |
| } else { |
| ibaddr = rbptr[index + 2]; |
| ibaddr = ibaddr << 32 | rbptr[index + 1]; |
| ibsize = rbptr[index + 3]; |
| index += 4; |
| } |
| |
| /* Don't parse known global IBs */ |
| if (iommu_is_setstate_addr(device, ibaddr, ibsize)) |
| continue; |
| |
| if (kgsl_gpuaddr_in_memdesc(&adreno_dev->pwron_fixup, |
| ibaddr, ibsize)) |
| continue; |
| |
| parse_ib(device, snapshot, snapshot->process, ibaddr, |
| ibsize); |
| } else |
| index = index + 1; |
| } |
| } |
| |
| /** |
| * snapshot_rb_ibs() - Dump rb data and capture the IB's in the RB as well |
| * @device: Pointer to a KGSL device |
| * @rb: The RB to dump |
| * @data: Pointer to memory where the RB data is to be dumped |
| * @snapshot: Pointer to information about the current snapshot being taken |
| */ |
| static void snapshot_rb_ibs(struct kgsl_device *device, |
| struct adreno_ringbuffer *rb, |
| struct kgsl_snapshot *snapshot) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| unsigned int rptr, *rbptr; |
| int index, i; |
| int parse_ibs = 0, ib_parse_start; |
| |
| /* Get the current read pointers for the RB */ |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_RB_RPTR, &rptr); |
| |
| /* |
| * Figure out the window of ringbuffer data to dump. First we need to |
| * find where the last processed IB ws submitted. Start walking back |
| * from the rptr |
| */ |
| |
| index = rptr; |
| rbptr = rb->buffer_desc.hostptr; |
| |
| do { |
| index--; |
| |
| if (index < 0) { |
| if (ADRENO_LEGACY_PM4(adreno_dev)) |
| index = KGSL_RB_DWORDS - 3; |
| else |
| index = KGSL_RB_DWORDS - 4; |
| |
| /* We wrapped without finding what we wanted */ |
| if (index < rb->wptr) { |
| index = rb->wptr; |
| break; |
| } |
| } |
| |
| if (adreno_cmd_is_ib(adreno_dev, rbptr[index])) { |
| if (ADRENO_LEGACY_PM4(adreno_dev)) { |
| if (rbptr[index + 1] == snapshot->ib1base) |
| break; |
| } else { |
| uint64_t ibaddr; |
| |
| ibaddr = rbptr[index + 2]; |
| ibaddr = ibaddr << 32 | rbptr[index + 1]; |
| if (ibaddr == snapshot->ib1base) |
| break; |
| } |
| } |
| } while (index != rb->wptr); |
| |
| /* |
| * If the ib1 was not found, for example, if ib1base was restored |
| * incorrectly after preemption, then simply dump the entire |
| * ringbuffer along with all the IBs in the ringbuffer. |
| */ |
| |
| if (index == rb->wptr) { |
| dump_all_ibs(device, rb, snapshot); |
| return; |
| } |
| |
| /* |
| * index points at the last submitted IB. We can only trust that the |
| * memory between the context switch and the hanging IB is valid, so |
| * the next step is to find the context switch before the submission |
| */ |
| |
| while (index != rb->wptr) { |
| index--; |
| |
| if (index < 0) { |
| index = KGSL_RB_DWORDS - 2; |
| |
| /* |
| * Wrapped without finding the context switch. This is |
| * harmless - we should still have enough data to dump a |
| * valid state |
| */ |
| |
| if (index < rb->wptr) { |
| index = rb->wptr; |
| break; |
| } |
| } |
| |
| /* Break if the current packet is a context switch identifier */ |
| if ((rbptr[index] == cp_packet(adreno_dev, CP_NOP, 1)) && |
| (rbptr[index + 1] == KGSL_CONTEXT_TO_MEM_IDENTIFIER)) |
| break; |
| } |
| |
| /* |
| * Index represents the start of the window of interest. We will try |
| * to dump all buffers between here and the rptr |
| */ |
| |
| ib_parse_start = index; |
| |
| /* |
| * Loop through the RB, looking for indirect buffers and MMU pagetable |
| * changes |
| */ |
| |
| index = rb->wptr; |
| for (i = 0; i < KGSL_RB_DWORDS; i++) { |
| /* |
| * Only parse IBs between the start and the rptr or the next |
| * context switch, whichever comes first |
| */ |
| |
| if (parse_ibs == 0 && index == ib_parse_start) |
| parse_ibs = 1; |
| else if (index == rptr || adreno_rb_ctxtswitch(adreno_dev, |
| &rbptr[index])) |
| parse_ibs = 0; |
| |
| if (parse_ibs && adreno_cmd_is_ib(adreno_dev, rbptr[index])) { |
| uint64_t ibaddr; |
| uint64_t ibsize; |
| |
| if (ADRENO_LEGACY_PM4(adreno_dev)) { |
| ibaddr = rbptr[index + 1]; |
| ibsize = rbptr[index + 2]; |
| } else { |
| ibaddr = rbptr[index + 2]; |
| ibaddr = ibaddr << 32 | rbptr[index + 1]; |
| ibsize = rbptr[index + 3]; |
| } |
| |
| /* Don't parse known global IBs */ |
| if (iommu_is_setstate_addr(device, ibaddr, ibsize)) |
| continue; |
| |
| if (kgsl_gpuaddr_in_memdesc(&adreno_dev->pwron_fixup, |
| ibaddr, ibsize)) |
| continue; |
| |
| parse_ib(device, snapshot, snapshot->process, |
| ibaddr, ibsize); |
| } |
| |
| index = (index + 1) % KGSL_RB_DWORDS; |
| } |
| |
| } |
| |
| /* Snapshot the ringbuffer memory */ |
| static size_t snapshot_rb(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct kgsl_snapshot_rb_v2 *header = (struct kgsl_snapshot_rb_v2 *)buf; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct snapshot_rb_params *snap_rb_params = priv; |
| struct kgsl_snapshot *snapshot = snap_rb_params->snapshot; |
| struct adreno_ringbuffer *rb = snap_rb_params->rb; |
| |
| /* |
| * Dump the entire ringbuffer - the parser can choose how much of it to |
| * process |
| */ |
| |
| if (remain < KGSL_RB_SIZE + sizeof(*header)) { |
| KGSL_CORE_ERR("snapshot: Not enough memory for the rb section"); |
| return 0; |
| } |
| |
| /* Write the sub-header for the section */ |
| header->start = 0; |
| header->end = KGSL_RB_DWORDS; |
| header->wptr = rb->wptr; |
| header->rptr = adreno_get_rptr(rb); |
| header->rbsize = KGSL_RB_DWORDS; |
| header->count = KGSL_RB_DWORDS; |
| adreno_rb_readtimestamp(adreno_dev, rb, KGSL_TIMESTAMP_QUEUED, |
| &header->timestamp_queued); |
| adreno_rb_readtimestamp(adreno_dev, rb, KGSL_TIMESTAMP_RETIRED, |
| &header->timestamp_retired); |
| header->gpuaddr = rb->buffer_desc.gpuaddr; |
| header->id = rb->id; |
| |
| if (rb == adreno_dev->cur_rb) |
| snapshot_rb_ibs(device, rb, snapshot); |
| |
| /* Just copy the ringbuffer, there are no active IBs */ |
| memcpy(data, rb->buffer_desc.hostptr, KGSL_RB_SIZE); |
| |
| /* Return the size of the section */ |
| return KGSL_RB_SIZE + sizeof(*header); |
| } |
| |
| static int _count_mem_entries(int id, void *ptr, void *data) |
| { |
| int *count = data; |
| *count = *count + 1; |
| return 0; |
| } |
| |
| struct mem_entry { |
| uint64_t gpuaddr; |
| uint64_t size; |
| unsigned int type; |
| } __packed; |
| |
| static int _save_mem_entries(int id, void *ptr, void *data) |
| { |
| struct kgsl_mem_entry *entry = ptr; |
| struct mem_entry *m = (struct mem_entry *) data; |
| unsigned int index = id - 1; |
| |
| m[index].gpuaddr = entry->memdesc.gpuaddr; |
| m[index].size = entry->memdesc.size; |
| m[index].type = kgsl_memdesc_get_memtype(&entry->memdesc); |
| |
| return 0; |
| } |
| |
| static size_t snapshot_capture_mem_list(struct kgsl_device *device, |
| u8 *buf, size_t remain, void *priv) |
| { |
| struct kgsl_snapshot_mem_list_v2 *header = |
| (struct kgsl_snapshot_mem_list_v2 *)buf; |
| int num_mem = 0; |
| int ret = 0; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| struct kgsl_process_private *process = priv; |
| |
| /* we need a process to search! */ |
| if (process == NULL) |
| return 0; |
| |
| spin_lock(&process->mem_lock); |
| |
| /* We need to know the number of memory objects that the process has */ |
| idr_for_each(&process->mem_idr, _count_mem_entries, &num_mem); |
| |
| if (num_mem == 0) |
| goto out; |
| |
| if (remain < ((num_mem * sizeof(struct mem_entry)) + sizeof(*header))) { |
| KGSL_CORE_ERR("snapshot: Not enough memory for the mem list"); |
| goto out; |
| } |
| |
| header->num_entries = num_mem; |
| header->ptbase = kgsl_mmu_pagetable_get_ttbr0(process->pagetable); |
| |
| /* |
| * Walk through the memory list and store the |
| * tuples(gpuaddr, size, memtype) in snapshot |
| */ |
| idr_for_each(&process->mem_idr, _save_mem_entries, data); |
| |
| ret = sizeof(*header) + (num_mem * sizeof(struct mem_entry)); |
| out: |
| spin_unlock(&process->mem_lock); |
| return ret; |
| } |
| |
| struct snapshot_ib_meta { |
| struct kgsl_snapshot *snapshot; |
| struct kgsl_snapshot_object *obj; |
| uint64_t ib1base; |
| uint64_t ib1size; |
| uint64_t ib2base; |
| uint64_t ib2size; |
| }; |
| |
| void kgsl_snapshot_add_active_ib_obj_list(struct kgsl_device *device, |
| struct kgsl_snapshot *snapshot) |
| { |
| struct adreno_ib_object_list *ib_obj_list; |
| int index = -ENOENT; |
| |
| if (!snapshot->ib1dumped) |
| index = find_object(snapshot->ib1base, snapshot->process); |
| |
| /* only do this for IB1 because the IB2's are part of IB1 objects */ |
| if ((index != -ENOENT) && |
| (snapshot->ib1base == objbuf[index].gpuaddr)) { |
| if (-E2BIG == adreno_ib_create_object_list(device, |
| objbuf[index].entry->priv, |
| objbuf[index].gpuaddr, |
| objbuf[index].size >> 2, |
| snapshot->ib2base, |
| &ib_obj_list)) |
| ib_max_objs = 1; |
| if (ib_obj_list) { |
| /* freeze the IB objects in the IB */ |
| snapshot_freeze_obj_list(snapshot, |
| objbuf[index].entry->priv, |
| ib_obj_list); |
| adreno_ib_destroy_obj_list(ib_obj_list); |
| } |
| } else { |
| /* Get the IB2 index from parsed object */ |
| index = find_object(snapshot->ib2base, snapshot->process); |
| |
| if (index != -ENOENT) |
| parse_ib(device, snapshot, snapshot->process, |
| snapshot->ib2base, objbuf[index].size >> 2); |
| } |
| } |
| |
| /* |
| * active_ib_is_parsed() - Checks if active ib is already parsed |
| * @gpuaddr: Active IB base address at the time of fault |
| * @size: Active IB size |
| * @process: The process to which the IB belongs |
| * |
| * Function returns true if the active is already is parsed |
| * else false |
| */ |
| static bool active_ib_is_parsed(uint64_t gpuaddr, uint64_t size, |
| struct kgsl_process_private *process) |
| { |
| int index; |
| /* go through the static list for gpuaddr is in list or not */ |
| for (index = 0; index < objbufptr; index++) { |
| if ((objbuf[index].gpuaddr <= gpuaddr) && |
| ((objbuf[index].gpuaddr + |
| (objbuf[index].size)) >= |
| (gpuaddr + size)) && |
| (objbuf[index].entry->priv == process)) |
| return true; |
| } |
| return false; |
| } |
| /* Snapshot the memory for an indirect buffer */ |
| static size_t snapshot_ib(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct kgsl_snapshot_ib_v2 *header = (struct kgsl_snapshot_ib_v2 *)buf; |
| struct snapshot_ib_meta *meta = priv; |
| unsigned int *src; |
| unsigned int *dst = (unsigned int *)(buf + sizeof(*header)); |
| struct adreno_ib_object_list *ib_obj_list; |
| struct kgsl_snapshot *snapshot; |
| struct kgsl_snapshot_object *obj; |
| struct kgsl_memdesc *memdesc; |
| |
| if (meta == NULL || meta->snapshot == NULL || meta->obj == NULL) { |
| KGSL_CORE_ERR("snapshot: bad metadata"); |
| return 0; |
| } |
| snapshot = meta->snapshot; |
| obj = meta->obj; |
| memdesc = &obj->entry->memdesc; |
| |
| /* If size is zero get it from the medesc size */ |
| if (!obj->size) |
| obj->size = (memdesc->size - (obj->gpuaddr - memdesc->gpuaddr)); |
| |
| if (remain < (obj->size + sizeof(*header))) { |
| KGSL_CORE_ERR("snapshot: Not enough memory for the ib\n"); |
| return 0; |
| } |
| |
| src = kgsl_gpuaddr_to_vaddr(memdesc, obj->gpuaddr); |
| if (src == NULL) { |
| KGSL_DRV_ERR(device, |
| "snapshot: Unable to map GPU memory object 0x%016llX into the kernel\n", |
| obj->gpuaddr); |
| return 0; |
| } |
| |
| /* only do this for IB1 because the IB2's are part of IB1 objects */ |
| if (meta->ib1base == obj->gpuaddr) { |
| |
| snapshot->ib1dumped = active_ib_is_parsed(obj->gpuaddr, |
| obj->size, obj->entry->priv); |
| if (-E2BIG == adreno_ib_create_object_list(device, |
| obj->entry->priv, |
| obj->gpuaddr, obj->size >> 2, |
| snapshot->ib2base, |
| &ib_obj_list)) |
| ib_max_objs = 1; |
| if (ib_obj_list) { |
| /* freeze the IB objects in the IB */ |
| snapshot_freeze_obj_list(snapshot, |
| obj->entry->priv, |
| ib_obj_list); |
| adreno_ib_destroy_obj_list(ib_obj_list); |
| } |
| } |
| |
| |
| if (meta->ib2base == obj->gpuaddr) |
| snapshot->ib2dumped = active_ib_is_parsed(obj->gpuaddr, |
| obj->size, obj->entry->priv); |
| |
| /* Write the sub-header for the section */ |
| header->gpuaddr = obj->gpuaddr; |
| header->ptbase = |
| kgsl_mmu_pagetable_get_ttbr0(obj->entry->priv->pagetable); |
| header->size = obj->size >> 2; |
| |
| /* Write the contents of the ib */ |
| memcpy((void *)dst, (void *)src, (size_t) obj->size); |
| /* Write the contents of the ib */ |
| |
| return obj->size + sizeof(*header); |
| } |
| |
| /* Dump another item on the current pending list */ |
| static void dump_object(struct kgsl_device *device, int obj, |
| struct kgsl_snapshot *snapshot) |
| { |
| struct snapshot_ib_meta meta; |
| |
| meta.snapshot = snapshot; |
| meta.obj = &objbuf[obj]; |
| meta.ib1base = snapshot->ib1base; |
| meta.ib1size = snapshot->ib1size; |
| meta.ib2base = snapshot->ib2base; |
| meta.ib2size = snapshot->ib2size; |
| |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_IB_V2, |
| snapshot, snapshot_ib, &meta); |
| if (objbuf[obj].entry) { |
| kgsl_memdesc_unmap(&(objbuf[obj].entry->memdesc)); |
| kgsl_mem_entry_put(objbuf[obj].entry); |
| } |
| } |
| |
| /* setup_fault process - Find kgsl_process_private struct that caused the fault |
| * |
| * Find the faulting process based what the dispatcher thinks happened and |
| * what the hardware is using for the current pagetable. The process struct |
| * will be used to look up GPU addresses that are encountered while parsing |
| * the GPU state. |
| */ |
| static void setup_fault_process(struct kgsl_device *device, |
| struct kgsl_snapshot *snapshot, |
| struct kgsl_process_private *process) |
| { |
| u64 hw_ptbase, proc_ptbase; |
| |
| if (process != NULL && !kgsl_process_private_get(process)) |
| process = NULL; |
| |
| /* Get the physical address of the MMU pagetable */ |
| hw_ptbase = kgsl_mmu_get_current_ttbr0(&device->mmu); |
| |
| /* if we have an input process, make sure the ptbases match */ |
| if (process) { |
| proc_ptbase = kgsl_mmu_pagetable_get_ttbr0(process->pagetable); |
| /* agreement! No need to check further */ |
| if (hw_ptbase == proc_ptbase) |
| goto done; |
| |
| kgsl_process_private_put(process); |
| process = NULL; |
| KGSL_CORE_ERR("snapshot: ptbase mismatch hw %llx sw %llx\n", |
| hw_ptbase, proc_ptbase); |
| } |
| |
| /* try to find the right pagetable by walking the process list */ |
| if (kgsl_mmu_is_perprocess(&device->mmu)) { |
| struct kgsl_process_private *tmp; |
| |
| mutex_lock(&kgsl_driver.process_mutex); |
| list_for_each_entry(tmp, &kgsl_driver.process_list, list) { |
| u64 pt_ttbr0; |
| |
| pt_ttbr0 = kgsl_mmu_pagetable_get_ttbr0(tmp->pagetable); |
| if ((pt_ttbr0 == hw_ptbase) |
| && kgsl_process_private_get(tmp)) { |
| process = tmp; |
| break; |
| } |
| } |
| mutex_unlock(&kgsl_driver.process_mutex); |
| } |
| done: |
| snapshot->process = process; |
| } |
| |
| /* Snapshot a global memory buffer */ |
| static size_t snapshot_global(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct kgsl_memdesc *memdesc = priv; |
| |
| struct kgsl_snapshot_gpu_object_v2 *header = |
| (struct kgsl_snapshot_gpu_object_v2 *)buf; |
| |
| u8 *ptr = buf + sizeof(*header); |
| |
| if (memdesc->size == 0) |
| return 0; |
| |
| if (remain < (memdesc->size + sizeof(*header))) { |
| KGSL_CORE_ERR("snapshot: Not enough memory for the memdesc\n"); |
| return 0; |
| } |
| |
| if (memdesc->hostptr == NULL) { |
| KGSL_CORE_ERR( |
| "snapshot: no kernel mapping for global object 0x%016llX\n", |
| memdesc->gpuaddr); |
| return 0; |
| } |
| |
| header->size = memdesc->size >> 2; |
| header->gpuaddr = memdesc->gpuaddr; |
| header->ptbase = MMU_DEFAULT_TTBR0(device); |
| header->type = SNAPSHOT_GPU_OBJECT_GLOBAL; |
| |
| memcpy(ptr, memdesc->hostptr, memdesc->size); |
| |
| return memdesc->size + sizeof(*header); |
| } |
| |
| /* Snapshot IOMMU specific buffers */ |
| static void adreno_snapshot_iommu(struct kgsl_device *device, |
| struct kgsl_snapshot *snapshot) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_iommu *iommu = KGSL_IOMMU_PRIV(device); |
| |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_GPU_OBJECT_V2, |
| snapshot, snapshot_global, &iommu->setstate); |
| |
| if (ADRENO_FEATURE(adreno_dev, ADRENO_PREEMPTION)) |
| kgsl_snapshot_add_section(device, |
| KGSL_SNAPSHOT_SECTION_GPU_OBJECT_V2, |
| snapshot, snapshot_global, &iommu->smmu_info); |
| } |
| |
| static void adreno_snapshot_ringbuffer(struct kgsl_device *device, |
| struct kgsl_snapshot *snapshot, struct adreno_ringbuffer *rb) |
| { |
| struct snapshot_rb_params params = { |
| .snapshot = snapshot, |
| .rb = rb, |
| }; |
| |
| if (rb == NULL) |
| return; |
| |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_RB_V2, snapshot, |
| snapshot_rb, ¶ms); |
| } |
| |
| /* adreno_snapshot - Snapshot the Adreno GPU state |
| * @device - KGSL device to snapshot |
| * @snapshot - Pointer to the snapshot instance |
| * @context - context that caused the fault, if known by the driver |
| * This is a hook function called by kgsl_snapshot to snapshot the |
| * Adreno specific information for the GPU snapshot. In turn, this function |
| * calls the GPU specific snapshot function to get core specific information. |
| */ |
| void adreno_snapshot(struct kgsl_device *device, struct kgsl_snapshot *snapshot, |
| struct kgsl_context *context) |
| { |
| unsigned int i; |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct adreno_gpudev *gpudev = ADRENO_GPU_DEVICE(adreno_dev); |
| |
| ib_max_objs = 0; |
| /* Reset the list of objects */ |
| objbufptr = 0; |
| |
| snapshot_frozen_objsize = 0; |
| |
| if (!IS_ERR(context)) |
| setup_fault_process(device, snapshot, |
| context ? context->proc_priv : NULL); |
| |
| /* Add GPU specific sections - registers mainly, but other stuff too */ |
| if (gpudev->snapshot) |
| gpudev->snapshot(adreno_dev, snapshot); |
| |
| /* Dumping these buffers is useless if the GX is not on */ |
| if (gpudev->gx_is_on) |
| if (!gpudev->gx_is_on(adreno_dev)) |
| return; |
| |
| adreno_readreg64(adreno_dev, ADRENO_REG_CP_IB1_BASE, |
| ADRENO_REG_CP_IB1_BASE_HI, &snapshot->ib1base); |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_IB1_BUFSZ, &snapshot->ib1size); |
| adreno_readreg64(adreno_dev, ADRENO_REG_CP_IB2_BASE, |
| ADRENO_REG_CP_IB2_BASE_HI, &snapshot->ib2base); |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_IB2_BUFSZ, &snapshot->ib2size); |
| |
| snapshot->ib1dumped = false; |
| snapshot->ib2dumped = false; |
| |
| adreno_snapshot_ringbuffer(device, snapshot, adreno_dev->cur_rb); |
| |
| /* Dump the prev ringbuffer */ |
| if (adreno_dev->prev_rb != adreno_dev->cur_rb) |
| adreno_snapshot_ringbuffer(device, snapshot, |
| adreno_dev->prev_rb); |
| |
| if ((adreno_dev->next_rb != adreno_dev->prev_rb) && |
| (adreno_dev->next_rb != adreno_dev->cur_rb)) |
| adreno_snapshot_ringbuffer(device, snapshot, |
| adreno_dev->next_rb); |
| |
| /* Dump selected global buffers */ |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_GPU_OBJECT_V2, |
| snapshot, snapshot_global, &device->memstore); |
| |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_GPU_OBJECT_V2, |
| snapshot, snapshot_global, |
| &adreno_dev->pwron_fixup); |
| |
| if (kgsl_mmu_get_mmutype(device) == KGSL_MMU_TYPE_IOMMU) |
| adreno_snapshot_iommu(device, snapshot); |
| |
| /* |
| * Add a section that lists (gpuaddr, size, memtype) tuples of the |
| * hanging process |
| */ |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_MEMLIST_V2, |
| snapshot, snapshot_capture_mem_list, snapshot->process); |
| /* |
| * Make sure that the last IB1 that was being executed is dumped. |
| * Since this was the last IB1 that was processed, we should have |
| * already added it to the list during the ringbuffer parse but we |
| * want to be double plus sure. |
| * The problem is that IB size from the register is the unprocessed size |
| * of the buffer not the original size, so if we didn't catch this |
| * buffer being directly used in the RB, then we might not be able to |
| * dump the whole thing. Print a warning message so we can try to |
| * figure how often this really happens. |
| */ |
| |
| if (-ENOENT == find_object(snapshot->ib1base, snapshot->process) && |
| snapshot->ib1size) { |
| kgsl_snapshot_push_object(snapshot->process, snapshot->ib1base, |
| snapshot->ib1size); |
| KGSL_CORE_ERR( |
| "CP_IB1_BASE not found in the ringbuffer.Dumping %x dwords of the buffer.\n", |
| snapshot->ib1size); |
| } |
| |
| /* |
| * Add the last parsed IB2 to the list. The IB2 should be found as we |
| * parse the objects below, but we try to add it to the list first, so |
| * it too can be parsed. Don't print an error message in this case - if |
| * the IB2 is found during parsing, the list will be updated with the |
| * correct size. |
| */ |
| |
| if (-ENOENT == find_object(snapshot->ib2base, snapshot->process)) { |
| kgsl_snapshot_push_object(snapshot->process, snapshot->ib2base, |
| snapshot->ib2size); |
| } |
| |
| /* |
| * Go through the list of found objects and dump each one. As the IBs |
| * are parsed, more objects might be found, and objbufptr will increase |
| */ |
| for (i = 0; i < objbufptr; i++) |
| dump_object(device, i, snapshot); |
| |
| /* |
| * Incase snapshot static blob is running out of memory, Add Active IB1 |
| * and IB2 entries to obj_list so that active ib's can be dumped to |
| * snapshot dynamic blob. |
| */ |
| if (!snapshot->ib1dumped || !snapshot->ib2dumped) |
| kgsl_snapshot_add_active_ib_obj_list(device, snapshot); |
| |
| if (ib_max_objs) |
| KGSL_CORE_ERR("Max objects found in IB\n"); |
| if (snapshot_frozen_objsize) |
| KGSL_CORE_ERR("GPU snapshot froze %zdKb of GPU buffers\n", |
| snapshot_frozen_objsize / 1024); |
| |
| } |
| |
| /* |
| * adreno_snapshot_cp_roq - Dump CP merciu data in snapshot |
| * @device: Device being snapshotted |
| * @remain: Bytes remaining in snapshot memory |
| * @priv: Size of merciu data in Dwords |
| */ |
| size_t adreno_snapshot_cp_merciu(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_snapshot_debug *header = (struct kgsl_snapshot_debug *)buf; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| int i, size = *((int *)priv); |
| |
| /* The MERCIU data is two dwords per entry */ |
| size = size << 1; |
| |
| if (remain < DEBUG_SECTION_SZ(size)) { |
| SNAPSHOT_ERR_NOMEM(device, "CP MERCIU DEBUG"); |
| return 0; |
| } |
| |
| header->type = SNAPSHOT_DEBUG_CP_MERCIU; |
| header->size = size; |
| |
| adreno_writereg(adreno_dev, ADRENO_REG_CP_MERCIU_ADDR, 0x0); |
| |
| for (i = 0; i < size; i++) { |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_MERCIU_DATA, |
| &data[(i * 2)]); |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_MERCIU_DATA2, |
| &data[(i * 2) + 1]); |
| } |
| |
| return DEBUG_SECTION_SZ(size); |
| } |
| |
| /* |
| * adreno_snapshot_cp_roq - Dump ROQ data in snapshot |
| * @device: Device being snapshotted |
| * @remain: Bytes remaining in snapshot memory |
| * @priv: Size of ROQ data in Dwords |
| */ |
| size_t adreno_snapshot_cp_roq(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_snapshot_debug *header = (struct kgsl_snapshot_debug *)buf; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| int i, size = *((int *)priv); |
| |
| if (remain < DEBUG_SECTION_SZ(size)) { |
| SNAPSHOT_ERR_NOMEM(device, "CP ROQ DEBUG"); |
| return 0; |
| } |
| |
| header->type = SNAPSHOT_DEBUG_CP_ROQ; |
| header->size = size; |
| |
| adreno_writereg(adreno_dev, ADRENO_REG_CP_ROQ_ADDR, 0x0); |
| for (i = 0; i < size; i++) |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_ROQ_DATA, &data[i]); |
| |
| return DEBUG_SECTION_SZ(size); |
| } |
| |
| /* |
| * adreno_snapshot_cp_pm4_ram() - Dump PM4 data in snapshot |
| * @device: Device being snapshotted |
| * @buf: Snapshot memory |
| * @remain: Number of bytes left in snapshot memory |
| * @priv: Unused |
| */ |
| size_t adreno_snapshot_cp_pm4_ram(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_snapshot_debug *header = (struct kgsl_snapshot_debug *)buf; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| int i; |
| struct adreno_firmware *fw = ADRENO_FW(adreno_dev, ADRENO_FW_PM4); |
| size_t size = fw->size - 1; |
| |
| if (remain < DEBUG_SECTION_SZ(size)) { |
| SNAPSHOT_ERR_NOMEM(device, "CP PM4 RAM DEBUG"); |
| return 0; |
| } |
| |
| header->type = SNAPSHOT_DEBUG_CP_PM4_RAM; |
| header->size = size; |
| |
| /* |
| * Read the firmware from the GPU rather than use our cache in order to |
| * try to catch mis-programming or corruption in the hardware. We do |
| * use the cached version of the size, however, instead of trying to |
| * maintain always changing hardcoded constants |
| */ |
| |
| adreno_writereg(adreno_dev, ADRENO_REG_CP_ME_RAM_RADDR, 0x0); |
| for (i = 0; i < size; i++) |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_ME_RAM_DATA, &data[i]); |
| |
| return DEBUG_SECTION_SZ(size); |
| } |
| |
| /* |
| * adreno_snapshot_cp_pfp_ram() - Dump the PFP data on snapshot |
| * @device: Device being snapshotted |
| * @buf: Snapshot memory |
| * @remain: Amount of butes left in snapshot memory |
| * @priv: Unused |
| */ |
| size_t adreno_snapshot_cp_pfp_ram(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_snapshot_debug *header = (struct kgsl_snapshot_debug *)buf; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| int i; |
| struct adreno_firmware *fw = ADRENO_FW(adreno_dev, ADRENO_FW_PFP); |
| int size = fw->size - 1; |
| |
| if (remain < DEBUG_SECTION_SZ(size)) { |
| SNAPSHOT_ERR_NOMEM(device, "CP PFP RAM DEBUG"); |
| return 0; |
| } |
| |
| header->type = SNAPSHOT_DEBUG_CP_PFP_RAM; |
| header->size = size; |
| |
| /* |
| * Read the firmware from the GPU rather than use our cache in order to |
| * try to catch mis-programming or corruption in the hardware. We do |
| * use the cached version of the size, however, instead of trying to |
| * maintain always changing hardcoded constants |
| */ |
| adreno_writereg(adreno_dev, ADRENO_REG_CP_PFP_UCODE_ADDR, 0x0); |
| for (i = 0; i < size; i++) |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_PFP_UCODE_DATA, |
| &data[i]); |
| |
| return DEBUG_SECTION_SZ(size); |
| } |
| |
| /* |
| * adreno_snapshot_vpc_memory() - Save VPC data in snapshot |
| * @device: Device being snapshotted |
| * @buf: Snapshot memory |
| * @remain: Number of bytes left in snapshot memory |
| * @priv: Private data for VPC if any |
| */ |
| size_t adreno_snapshot_vpc_memory(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_snapshot_debug *header = (struct kgsl_snapshot_debug *)buf; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| int vpc_mem_size = *((int *)priv); |
| size_t size = VPC_MEMORY_BANKS * vpc_mem_size; |
| int bank, addr, i = 0; |
| |
| if (remain < DEBUG_SECTION_SZ(size)) { |
| SNAPSHOT_ERR_NOMEM(device, "VPC MEMORY"); |
| return 0; |
| } |
| |
| header->type = SNAPSHOT_DEBUG_VPC_MEMORY; |
| header->size = size; |
| |
| for (bank = 0; bank < VPC_MEMORY_BANKS; bank++) { |
| for (addr = 0; addr < vpc_mem_size; addr++) { |
| unsigned int val = bank | (addr << 4); |
| |
| adreno_writereg(adreno_dev, |
| ADRENO_REG_VPC_DEBUG_RAM_SEL, val); |
| adreno_readreg(adreno_dev, |
| ADRENO_REG_VPC_DEBUG_RAM_READ, &data[i++]); |
| } |
| } |
| |
| return DEBUG_SECTION_SZ(size); |
| } |
| |
| /* |
| * adreno_snapshot_cp_meq() - Save CP MEQ data in snapshot |
| * @device: Device being snapshotted |
| * @buf: Snapshot memory |
| * @remain: Number of bytes left in snapshot memory |
| * @priv: Contains the size of MEQ data |
| */ |
| size_t adreno_snapshot_cp_meq(struct kgsl_device *device, u8 *buf, |
| size_t remain, void *priv) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_snapshot_debug *header = (struct kgsl_snapshot_debug *)buf; |
| unsigned int *data = (unsigned int *)(buf + sizeof(*header)); |
| int i; |
| int cp_meq_sz = *((int *)priv); |
| |
| if (remain < DEBUG_SECTION_SZ(cp_meq_sz)) { |
| SNAPSHOT_ERR_NOMEM(device, "CP MEQ DEBUG"); |
| return 0; |
| } |
| |
| header->type = SNAPSHOT_DEBUG_CP_MEQ; |
| header->size = cp_meq_sz; |
| |
| adreno_writereg(adreno_dev, ADRENO_REG_CP_MEQ_ADDR, 0x0); |
| for (i = 0; i < cp_meq_sz; i++) |
| adreno_readreg(adreno_dev, ADRENO_REG_CP_MEQ_DATA, &data[i]); |
| |
| return DEBUG_SECTION_SZ(cp_meq_sz); |
| } |
| |
| static const struct adreno_vbif_snapshot_registers *vbif_registers( |
| struct adreno_device *adreno_dev, |
| const struct adreno_vbif_snapshot_registers *list, |
| unsigned int count) |
| { |
| unsigned int version; |
| unsigned int i; |
| |
| adreno_readreg(adreno_dev, ADRENO_REG_VBIF_VERSION, &version); |
| |
| for (i = 0; i < count; i++) { |
| if ((list[i].version & list[i].mask) == |
| (version & list[i].mask)) |
| return &list[i]; |
| } |
| |
| KGSL_CORE_ERR( |
| "snapshot: Registers for VBIF version %X register were not dumped\n", |
| version); |
| |
| return NULL; |
| } |
| |
| void adreno_snapshot_registers(struct kgsl_device *device, |
| struct kgsl_snapshot *snapshot, |
| const unsigned int *regs, unsigned int count) |
| { |
| struct kgsl_snapshot_registers r; |
| |
| r.regs = regs; |
| r.count = count; |
| |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_REGS, snapshot, |
| kgsl_snapshot_dump_registers, &r); |
| } |
| |
| void adreno_snapshot_vbif_registers(struct kgsl_device *device, |
| struct kgsl_snapshot *snapshot, |
| const struct adreno_vbif_snapshot_registers *list, |
| unsigned int count) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_snapshot_registers regs; |
| const struct adreno_vbif_snapshot_registers *vbif; |
| |
| vbif = vbif_registers(adreno_dev, list, count); |
| |
| if (vbif != NULL) { |
| regs.regs = vbif->registers; |
| regs.count = vbif->count; |
| |
| kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_REGS, |
| snapshot, kgsl_snapshot_dump_registers, ®s); |
| } |
| } |