| /* Copyright (c) 2008-2017, 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 <linux/module.h> |
| #include <linux/fb.h> |
| #include <linux/file.h> |
| #include <linux/fs.h> |
| #include <linux/fdtable.h> |
| #include <linux/list.h> |
| #include <linux/debugfs.h> |
| #include <linux/uaccess.h> |
| #include <linux/interrupt.h> |
| #include <linux/workqueue.h> |
| #include <linux/dma-buf.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/rbtree.h> |
| #include <linux/major.h> |
| #include <linux/io.h> |
| #include <linux/mman.h> |
| #include <linux/sort.h> |
| #include <linux/security.h> |
| #include <linux/compat.h> |
| #include <linux/ctype.h> |
| #include <linux/mm.h> |
| #include <asm/cacheflush.h> |
| |
| #include "kgsl.h" |
| #include "kgsl_debugfs.h" |
| #include "kgsl_log.h" |
| #include "kgsl_sharedmem.h" |
| #include "kgsl_drawobj.h" |
| #include "kgsl_device.h" |
| #include "kgsl_trace.h" |
| #include "kgsl_sync.h" |
| #include "kgsl_compat.h" |
| #include "kgsl_pool.h" |
| |
| #undef MODULE_PARAM_PREFIX |
| #define MODULE_PARAM_PREFIX "kgsl." |
| |
| #ifndef arch_mmap_check |
| #define arch_mmap_check(addr, len, flags) (0) |
| #endif |
| |
| #ifndef pgprot_writebackcache |
| #define pgprot_writebackcache(_prot) (_prot) |
| #endif |
| |
| #ifndef pgprot_writethroughcache |
| #define pgprot_writethroughcache(_prot) (_prot) |
| #endif |
| |
| #ifdef CONFIG_ARM_LPAE |
| #define KGSL_DMA_BIT_MASK DMA_BIT_MASK(64) |
| #else |
| #define KGSL_DMA_BIT_MASK DMA_BIT_MASK(32) |
| #endif |
| |
| static char *kgsl_mmu_type; |
| module_param_named(mmutype, kgsl_mmu_type, charp, 0000); |
| MODULE_PARM_DESC(kgsl_mmu_type, "Type of MMU to be used for graphics"); |
| |
| /* Mutex used for the IOMMU sync quirk */ |
| DEFINE_MUTEX(kgsl_mmu_sync); |
| EXPORT_SYMBOL(kgsl_mmu_sync); |
| |
| struct kgsl_dma_buf_meta { |
| struct dma_buf_attachment *attach; |
| struct dma_buf *dmabuf; |
| struct sg_table *table; |
| }; |
| |
| static inline struct kgsl_pagetable *_get_memdesc_pagetable( |
| struct kgsl_pagetable *pt, struct kgsl_mem_entry *entry) |
| { |
| /* if a secured buffer, map it to secure global pagetable */ |
| if (kgsl_memdesc_is_secured(&entry->memdesc)) |
| return pt->mmu->securepagetable; |
| |
| return pt; |
| } |
| |
| static void kgsl_mem_entry_detach_process(struct kgsl_mem_entry *entry); |
| |
| static const struct file_operations kgsl_fops; |
| |
| /* |
| * The memfree list contains the last N blocks of memory that have been freed. |
| * On a GPU fault we walk the list to see if the faulting address had been |
| * recently freed and print out a message to that effect |
| */ |
| |
| #define MEMFREE_ENTRIES 512 |
| |
| static DEFINE_SPINLOCK(memfree_lock); |
| |
| struct memfree_entry { |
| pid_t ptname; |
| uint64_t gpuaddr; |
| uint64_t size; |
| pid_t pid; |
| uint64_t flags; |
| }; |
| |
| static struct { |
| struct memfree_entry *list; |
| int head; |
| int tail; |
| } memfree; |
| |
| static int kgsl_memfree_init(void) |
| { |
| memfree.list = kcalloc(MEMFREE_ENTRIES, sizeof(struct memfree_entry), |
| GFP_KERNEL); |
| |
| return (memfree.list) ? 0 : -ENOMEM; |
| } |
| |
| static void kgsl_memfree_exit(void) |
| { |
| kfree(memfree.list); |
| memset(&memfree, 0, sizeof(memfree)); |
| } |
| |
| static inline bool match_memfree_addr(struct memfree_entry *entry, |
| pid_t ptname, uint64_t gpuaddr) |
| { |
| return ((entry->ptname == ptname) && |
| (entry->size > 0) && |
| (gpuaddr >= entry->gpuaddr && |
| gpuaddr < (entry->gpuaddr + entry->size))); |
| } |
| int kgsl_memfree_find_entry(pid_t ptname, uint64_t *gpuaddr, |
| uint64_t *size, uint64_t *flags, pid_t *pid) |
| { |
| int ptr; |
| |
| if (memfree.list == NULL) |
| return 0; |
| |
| spin_lock(&memfree_lock); |
| |
| ptr = memfree.head - 1; |
| if (ptr < 0) |
| ptr = MEMFREE_ENTRIES - 1; |
| |
| /* Walk backwards through the list looking for the last match */ |
| while (ptr != memfree.tail) { |
| struct memfree_entry *entry = &memfree.list[ptr]; |
| |
| if (match_memfree_addr(entry, ptname, *gpuaddr)) { |
| *gpuaddr = entry->gpuaddr; |
| *flags = entry->flags; |
| *size = entry->size; |
| *pid = entry->pid; |
| |
| spin_unlock(&memfree_lock); |
| return 1; |
| } |
| |
| ptr = ptr - 1; |
| |
| if (ptr < 0) |
| ptr = MEMFREE_ENTRIES - 1; |
| } |
| |
| spin_unlock(&memfree_lock); |
| return 0; |
| } |
| |
| static void kgsl_memfree_purge(struct kgsl_pagetable *pagetable, |
| uint64_t gpuaddr, uint64_t size) |
| { |
| pid_t ptname = pagetable ? pagetable->name : 0; |
| int i; |
| |
| if (memfree.list == NULL) |
| return; |
| |
| spin_lock(&memfree_lock); |
| |
| for (i = 0; i < MEMFREE_ENTRIES; i++) { |
| struct memfree_entry *entry = &memfree.list[i]; |
| |
| if (entry->ptname != ptname || entry->size == 0) |
| continue; |
| |
| if (gpuaddr > entry->gpuaddr && |
| gpuaddr < entry->gpuaddr + entry->size) { |
| /* truncate the end of the entry */ |
| entry->size = gpuaddr - entry->gpuaddr; |
| } else if (gpuaddr <= entry->gpuaddr) { |
| if (gpuaddr + size > entry->gpuaddr && |
| gpuaddr + size < entry->gpuaddr + entry->size) |
| /* Truncate the beginning of the entry */ |
| entry->gpuaddr = gpuaddr + size; |
| else if (gpuaddr + size >= entry->gpuaddr + entry->size) |
| /* Remove the entire entry */ |
| entry->size = 0; |
| } |
| } |
| spin_unlock(&memfree_lock); |
| } |
| |
| static void kgsl_memfree_add(pid_t pid, pid_t ptname, uint64_t gpuaddr, |
| uint64_t size, uint64_t flags) |
| |
| { |
| struct memfree_entry *entry; |
| |
| if (memfree.list == NULL) |
| return; |
| |
| spin_lock(&memfree_lock); |
| |
| entry = &memfree.list[memfree.head]; |
| |
| entry->pid = pid; |
| entry->ptname = ptname; |
| entry->gpuaddr = gpuaddr; |
| entry->size = size; |
| entry->flags = flags; |
| |
| memfree.head = (memfree.head + 1) % MEMFREE_ENTRIES; |
| |
| if (memfree.head == memfree.tail) |
| memfree.tail = (memfree.tail + 1) % MEMFREE_ENTRIES; |
| |
| spin_unlock(&memfree_lock); |
| } |
| |
| int kgsl_readtimestamp(struct kgsl_device *device, void *priv, |
| enum kgsl_timestamp_type type, unsigned int *timestamp) |
| { |
| return device->ftbl->readtimestamp(device, priv, type, timestamp); |
| } |
| EXPORT_SYMBOL(kgsl_readtimestamp); |
| |
| static long gpumem_free_entry(struct kgsl_mem_entry *entry); |
| |
| /* Scheduled by kgsl_mem_entry_put_deferred() */ |
| static void _deferred_put(struct work_struct *work) |
| { |
| struct kgsl_mem_entry *entry = |
| container_of(work, struct kgsl_mem_entry, work); |
| |
| kgsl_mem_entry_put(entry); |
| } |
| |
| static inline struct kgsl_mem_entry * |
| kgsl_mem_entry_create(void) |
| { |
| struct kgsl_mem_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
| |
| if (entry != NULL) |
| kref_init(&entry->refcount); |
| |
| return entry; |
| } |
| #ifdef CONFIG_DMA_SHARED_BUFFER |
| static void kgsl_destroy_ion(struct kgsl_dma_buf_meta *meta) |
| { |
| if (meta != NULL) { |
| dma_buf_unmap_attachment(meta->attach, meta->table, |
| DMA_FROM_DEVICE); |
| dma_buf_detach(meta->dmabuf, meta->attach); |
| dma_buf_put(meta->dmabuf); |
| kfree(meta); |
| } |
| } |
| #else |
| static void kgsl_destroy_ion(struct kgsl_dma_buf_meta *meta) |
| { |
| |
| } |
| #endif |
| |
| void |
| kgsl_mem_entry_destroy(struct kref *kref) |
| { |
| struct kgsl_mem_entry *entry = container_of(kref, |
| struct kgsl_mem_entry, |
| refcount); |
| unsigned int memtype; |
| |
| if (entry == NULL) |
| return; |
| |
| /* pull out the memtype before the flags get cleared */ |
| memtype = kgsl_memdesc_usermem_type(&entry->memdesc); |
| |
| /* Detach from process list */ |
| kgsl_mem_entry_detach_process(entry); |
| |
| if (memtype != KGSL_MEM_ENTRY_KERNEL) |
| atomic_long_sub(entry->memdesc.size, |
| &kgsl_driver.stats.mapped); |
| |
| /* |
| * Ion takes care of freeing the sg_table for us so |
| * clear the sg table before freeing the sharedmem |
| * so kgsl_sharedmem_free doesn't try to free it again |
| */ |
| if (memtype == KGSL_MEM_ENTRY_ION) |
| entry->memdesc.sgt = NULL; |
| |
| if ((memtype == KGSL_MEM_ENTRY_USER) |
| && !(entry->memdesc.flags & KGSL_MEMFLAGS_GPUREADONLY)) { |
| int i = 0, j; |
| struct scatterlist *sg; |
| struct page *page; |
| /* |
| * Mark all of pages in the scatterlist as dirty since they |
| * were writable by the GPU. |
| */ |
| for_each_sg(entry->memdesc.sgt->sgl, sg, |
| entry->memdesc.sgt->nents, i) { |
| page = sg_page(sg); |
| for (j = 0; j < (sg->length >> PAGE_SHIFT); j++) |
| set_page_dirty(nth_page(page, j)); |
| } |
| } |
| |
| kgsl_sharedmem_free(&entry->memdesc); |
| |
| switch (memtype) { |
| case KGSL_MEM_ENTRY_ION: |
| kgsl_destroy_ion(entry->priv_data); |
| break; |
| default: |
| break; |
| } |
| |
| kfree(entry); |
| } |
| EXPORT_SYMBOL(kgsl_mem_entry_destroy); |
| |
| /* Allocate a IOVA for memory objects that don't use SVM */ |
| static int kgsl_mem_entry_track_gpuaddr(struct kgsl_device *device, |
| struct kgsl_process_private *process, |
| struct kgsl_mem_entry *entry) |
| { |
| struct kgsl_pagetable *pagetable; |
| |
| /* |
| * If SVM is enabled for this object then the address needs to be |
| * assigned elsewhere |
| * Also do not proceed further in case of NoMMU. |
| */ |
| if (kgsl_memdesc_use_cpu_map(&entry->memdesc) || |
| (kgsl_mmu_get_mmutype(device) == KGSL_MMU_TYPE_NONE)) |
| return 0; |
| |
| pagetable = kgsl_memdesc_is_secured(&entry->memdesc) ? |
| device->mmu.securepagetable : process->pagetable; |
| |
| return kgsl_mmu_get_gpuaddr(pagetable, &entry->memdesc); |
| } |
| |
| /* Commit the entry to the process so it can be accessed by other operations */ |
| static void kgsl_mem_entry_commit_process(struct kgsl_mem_entry *entry) |
| { |
| if (!entry) |
| return; |
| |
| spin_lock(&entry->priv->mem_lock); |
| idr_replace(&entry->priv->mem_idr, entry, entry->id); |
| spin_unlock(&entry->priv->mem_lock); |
| } |
| |
| /* |
| * Attach the memory object to a process by (possibly) getting a GPU address and |
| * (possibly) mapping it |
| */ |
| static int kgsl_mem_entry_attach_process(struct kgsl_device *device, |
| struct kgsl_process_private *process, |
| struct kgsl_mem_entry *entry) |
| { |
| int id, ret; |
| |
| ret = kgsl_process_private_get(process); |
| if (!ret) |
| return -EBADF; |
| |
| ret = kgsl_mem_entry_track_gpuaddr(device, process, entry); |
| if (ret) { |
| kgsl_process_private_put(process); |
| return ret; |
| } |
| |
| idr_preload(GFP_KERNEL); |
| spin_lock(&process->mem_lock); |
| /* Allocate the ID but don't attach the pointer just yet */ |
| id = idr_alloc(&process->mem_idr, NULL, 1, 0, GFP_NOWAIT); |
| spin_unlock(&process->mem_lock); |
| idr_preload_end(); |
| |
| if (id < 0) { |
| if (!kgsl_memdesc_use_cpu_map(&entry->memdesc)) |
| kgsl_mmu_put_gpuaddr(&entry->memdesc); |
| kgsl_process_private_put(process); |
| return id; |
| } |
| |
| entry->id = id; |
| entry->priv = process; |
| |
| /* |
| * Map the memory if a GPU address is already assigned, either through |
| * kgsl_mem_entry_track_gpuaddr() or via some other SVM process |
| */ |
| if (entry->memdesc.gpuaddr) { |
| if (entry->memdesc.flags & KGSL_MEMFLAGS_SPARSE_VIRT) |
| ret = kgsl_mmu_sparse_dummy_map( |
| entry->memdesc.pagetable, |
| &entry->memdesc, 0, |
| entry->memdesc.size); |
| else if (entry->memdesc.gpuaddr) |
| ret = kgsl_mmu_map(entry->memdesc.pagetable, |
| &entry->memdesc); |
| |
| if (ret) |
| kgsl_mem_entry_detach_process(entry); |
| } |
| |
| kgsl_memfree_purge(entry->memdesc.pagetable, entry->memdesc.gpuaddr, |
| entry->memdesc.size); |
| |
| return ret; |
| } |
| |
| /* Detach a memory entry from a process and unmap it from the MMU */ |
| static void kgsl_mem_entry_detach_process(struct kgsl_mem_entry *entry) |
| { |
| unsigned int type; |
| |
| if (entry == NULL) |
| return; |
| |
| /* |
| * First remove the entry from mem_idr list |
| * so that no one can operate on obsolete values |
| */ |
| spin_lock(&entry->priv->mem_lock); |
| if (entry->id != 0) |
| idr_remove(&entry->priv->mem_idr, entry->id); |
| entry->id = 0; |
| |
| type = kgsl_memdesc_usermem_type(&entry->memdesc); |
| entry->priv->stats[type].cur -= entry->memdesc.size; |
| spin_unlock(&entry->priv->mem_lock); |
| |
| kgsl_mmu_put_gpuaddr(&entry->memdesc); |
| |
| kgsl_process_private_put(entry->priv); |
| |
| entry->priv = NULL; |
| } |
| |
| /** |
| * kgsl_context_dump() - dump information about a draw context |
| * @device: KGSL device that owns the context |
| * @context: KGSL context to dump information about |
| * |
| * Dump specific information about the context to the kernel log. Used for |
| * fence timeout callbacks |
| */ |
| void kgsl_context_dump(struct kgsl_context *context) |
| { |
| struct kgsl_device *device; |
| |
| if (_kgsl_context_get(context) == 0) |
| return; |
| |
| device = context->device; |
| |
| if (kgsl_context_detached(context)) { |
| dev_err(device->dev, " context[%d]: context detached\n", |
| context->id); |
| } else if (device->ftbl->drawctxt_dump != NULL) |
| device->ftbl->drawctxt_dump(device, context); |
| |
| kgsl_context_put(context); |
| } |
| EXPORT_SYMBOL(kgsl_context_dump); |
| |
| /* Allocate a new context ID */ |
| static int _kgsl_get_context_id(struct kgsl_device *device) |
| { |
| int id; |
| |
| idr_preload(GFP_KERNEL); |
| write_lock(&device->context_lock); |
| /* Allocate the slot but don't put a pointer in it yet */ |
| id = idr_alloc(&device->context_idr, NULL, 1, |
| KGSL_MEMSTORE_MAX, GFP_NOWAIT); |
| write_unlock(&device->context_lock); |
| idr_preload_end(); |
| |
| return id; |
| } |
| |
| /** |
| * kgsl_context_init() - helper to initialize kgsl_context members |
| * @dev_priv: the owner of the context |
| * @context: the newly created context struct, should be allocated by |
| * the device specific drawctxt_create function. |
| * |
| * This is a helper function for the device specific drawctxt_create |
| * function to initialize the common members of its context struct. |
| * If this function succeeds, reference counting is active in the context |
| * struct and the caller should kgsl_context_put() it on error. |
| * If it fails, the caller should just free the context structure |
| * it passed in. |
| */ |
| int kgsl_context_init(struct kgsl_device_private *dev_priv, |
| struct kgsl_context *context) |
| { |
| struct kgsl_device *device = dev_priv->device; |
| char name[64]; |
| int ret = 0, id; |
| |
| id = _kgsl_get_context_id(device); |
| if (id == -ENOSPC) { |
| /* |
| * Before declaring that there are no contexts left try |
| * flushing the event workqueue just in case there are |
| * detached contexts waiting to finish |
| */ |
| |
| flush_workqueue(device->events_wq); |
| id = _kgsl_get_context_id(device); |
| } |
| |
| if (id < 0) { |
| if (id == -ENOSPC) |
| KGSL_DRV_INFO(device, |
| "cannot have more than %zu contexts due to memstore limitation\n", |
| KGSL_MEMSTORE_MAX); |
| |
| return id; |
| } |
| |
| context->id = id; |
| |
| kref_init(&context->refcount); |
| /* |
| * Get a refernce to the process private so its not destroyed, until |
| * the context is destroyed. This will also prevent the pagetable |
| * from being destroyed |
| */ |
| if (!kgsl_process_private_get(dev_priv->process_priv)) { |
| ret = -EBADF; |
| goto out; |
| } |
| context->device = dev_priv->device; |
| context->dev_priv = dev_priv; |
| context->proc_priv = dev_priv->process_priv; |
| context->tid = task_pid_nr(current); |
| |
| ret = kgsl_sync_timeline_create(context); |
| if (ret) |
| goto out; |
| |
| snprintf(name, sizeof(name), "context-%d", id); |
| kgsl_add_event_group(&context->events, context, name, |
| kgsl_readtimestamp, context); |
| |
| out: |
| if (ret) { |
| write_lock(&device->context_lock); |
| idr_remove(&dev_priv->device->context_idr, id); |
| write_unlock(&device->context_lock); |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(kgsl_context_init); |
| |
| /** |
| * kgsl_context_detach() - Release the "master" context reference |
| * @context: The context that will be detached |
| * |
| * This is called when a context becomes unusable, because userspace |
| * has requested for it to be destroyed. The context itself may |
| * exist a bit longer until its reference count goes to zero. |
| * Other code referencing the context can detect that it has been |
| * detached by checking the KGSL_CONTEXT_PRIV_DETACHED bit in |
| * context->priv. |
| */ |
| static void kgsl_context_detach(struct kgsl_context *context) |
| { |
| struct kgsl_device *device; |
| |
| if (context == NULL) |
| return; |
| |
| /* |
| * Mark the context as detached to keep others from using |
| * the context before it gets fully removed, and to make sure |
| * we don't try to detach twice. |
| */ |
| if (test_and_set_bit(KGSL_CONTEXT_PRIV_DETACHED, &context->priv)) |
| return; |
| |
| device = context->device; |
| |
| trace_kgsl_context_detach(device, context); |
| |
| context->device->ftbl->drawctxt_detach(context); |
| |
| /* |
| * Cancel all pending events after the device-specific context is |
| * detached, to avoid possibly freeing memory while it is still |
| * in use by the GPU. |
| */ |
| kgsl_cancel_events(device, &context->events); |
| |
| /* Remove the event group from the list */ |
| kgsl_del_event_group(&context->events); |
| |
| kgsl_context_put(context); |
| } |
| |
| void |
| kgsl_context_destroy(struct kref *kref) |
| { |
| struct kgsl_context *context = container_of(kref, struct kgsl_context, |
| refcount); |
| struct kgsl_device *device = context->device; |
| |
| trace_kgsl_context_destroy(device, context); |
| |
| /* |
| * It's not safe to destroy the context if it's not detached as GPU |
| * may still be executing commands |
| */ |
| BUG_ON(!kgsl_context_detached(context)); |
| |
| write_lock(&device->context_lock); |
| if (context->id != KGSL_CONTEXT_INVALID) { |
| |
| /* Clear the timestamps in the memstore during destroy */ |
| kgsl_sharedmem_writel(device, &device->memstore, |
| KGSL_MEMSTORE_OFFSET(context->id, soptimestamp), 0); |
| kgsl_sharedmem_writel(device, &device->memstore, |
| KGSL_MEMSTORE_OFFSET(context->id, eoptimestamp), 0); |
| |
| /* clear device power constraint */ |
| if (context->id == device->pwrctrl.constraint.owner_id) { |
| trace_kgsl_constraint(device, |
| device->pwrctrl.constraint.type, |
| device->pwrctrl.active_pwrlevel, |
| 0); |
| device->pwrctrl.constraint.type = KGSL_CONSTRAINT_NONE; |
| } |
| |
| idr_remove(&device->context_idr, context->id); |
| context->id = KGSL_CONTEXT_INVALID; |
| } |
| write_unlock(&device->context_lock); |
| kgsl_sync_timeline_destroy(context); |
| kgsl_process_private_put(context->proc_priv); |
| |
| device->ftbl->drawctxt_destroy(context); |
| } |
| |
| struct kgsl_device *kgsl_get_device(int dev_idx) |
| { |
| int i; |
| struct kgsl_device *ret = NULL; |
| |
| mutex_lock(&kgsl_driver.devlock); |
| |
| for (i = 0; i < KGSL_DEVICE_MAX; i++) { |
| if (kgsl_driver.devp[i] && kgsl_driver.devp[i]->id == dev_idx) { |
| ret = kgsl_driver.devp[i]; |
| break; |
| } |
| } |
| |
| mutex_unlock(&kgsl_driver.devlock); |
| return ret; |
| } |
| EXPORT_SYMBOL(kgsl_get_device); |
| |
| static struct kgsl_device *kgsl_get_minor(int minor) |
| { |
| struct kgsl_device *ret = NULL; |
| |
| if (minor < 0 || minor >= KGSL_DEVICE_MAX) |
| return NULL; |
| |
| mutex_lock(&kgsl_driver.devlock); |
| ret = kgsl_driver.devp[minor]; |
| mutex_unlock(&kgsl_driver.devlock); |
| |
| return ret; |
| } |
| |
| /** |
| * kgsl_check_timestamp() - return true if the specified timestamp is retired |
| * @device: Pointer to the KGSL device to check |
| * @context: Pointer to the context for the timestamp |
| * @timestamp: The timestamp to compare |
| */ |
| int kgsl_check_timestamp(struct kgsl_device *device, |
| struct kgsl_context *context, unsigned int timestamp) |
| { |
| unsigned int ts_processed; |
| |
| kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, |
| &ts_processed); |
| |
| return (timestamp_cmp(ts_processed, timestamp) >= 0); |
| } |
| EXPORT_SYMBOL(kgsl_check_timestamp); |
| |
| static int kgsl_suspend_device(struct kgsl_device *device, pm_message_t state) |
| { |
| int status = -EINVAL; |
| |
| if (!device) |
| return -EINVAL; |
| |
| KGSL_PWR_WARN(device, "suspend start\n"); |
| |
| mutex_lock(&device->mutex); |
| status = kgsl_pwrctrl_change_state(device, KGSL_STATE_SUSPEND); |
| mutex_unlock(&device->mutex); |
| |
| KGSL_PWR_WARN(device, "suspend end\n"); |
| return status; |
| } |
| |
| static int kgsl_resume_device(struct kgsl_device *device) |
| { |
| if (!device) |
| return -EINVAL; |
| |
| KGSL_PWR_WARN(device, "resume start\n"); |
| mutex_lock(&device->mutex); |
| if (device->state == KGSL_STATE_SUSPEND) { |
| kgsl_pwrctrl_change_state(device, KGSL_STATE_SLUMBER); |
| } else if (device->state != KGSL_STATE_INIT) { |
| /* |
| * This is an error situation,so wait for the device |
| * to idle and then put the device to SLUMBER state. |
| * This will put the device to the right state when |
| * we resume. |
| */ |
| if (device->state == KGSL_STATE_ACTIVE) |
| device->ftbl->idle(device); |
| kgsl_pwrctrl_change_state(device, KGSL_STATE_SLUMBER); |
| KGSL_PWR_ERR(device, |
| "resume invoked without a suspend\n"); |
| } |
| |
| mutex_unlock(&device->mutex); |
| KGSL_PWR_WARN(device, "resume end\n"); |
| return 0; |
| } |
| |
| static int kgsl_suspend(struct device *dev) |
| { |
| |
| pm_message_t arg = {0}; |
| struct kgsl_device *device = dev_get_drvdata(dev); |
| |
| return kgsl_suspend_device(device, arg); |
| } |
| |
| static int kgsl_resume(struct device *dev) |
| { |
| struct kgsl_device *device = dev_get_drvdata(dev); |
| |
| return kgsl_resume_device(device); |
| } |
| |
| static int kgsl_runtime_suspend(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static int kgsl_runtime_resume(struct device *dev) |
| { |
| return 0; |
| } |
| |
| const struct dev_pm_ops kgsl_pm_ops = { |
| .suspend = kgsl_suspend, |
| .resume = kgsl_resume, |
| .runtime_suspend = kgsl_runtime_suspend, |
| .runtime_resume = kgsl_runtime_resume, |
| }; |
| EXPORT_SYMBOL(kgsl_pm_ops); |
| |
| int kgsl_suspend_driver(struct platform_device *pdev, |
| pm_message_t state) |
| { |
| struct kgsl_device *device = dev_get_drvdata(&pdev->dev); |
| |
| return kgsl_suspend_device(device, state); |
| } |
| EXPORT_SYMBOL(kgsl_suspend_driver); |
| |
| int kgsl_resume_driver(struct platform_device *pdev) |
| { |
| struct kgsl_device *device = dev_get_drvdata(&pdev->dev); |
| |
| return kgsl_resume_device(device); |
| } |
| EXPORT_SYMBOL(kgsl_resume_driver); |
| |
| /** |
| * kgsl_destroy_process_private() - Cleanup function to free process private |
| * @kref: - Pointer to object being destroyed's kref struct |
| * Free struct object and all other resources attached to it. |
| * Since the function can be used when not all resources inside process |
| * private have been allocated, there is a check to (before each resource |
| * cleanup) see if the struct member being cleaned is in fact allocated or not. |
| * If the value is not NULL, resource is freed. |
| */ |
| static void kgsl_destroy_process_private(struct kref *kref) |
| { |
| struct kgsl_process_private *private = container_of(kref, |
| struct kgsl_process_private, refcount); |
| |
| idr_destroy(&private->mem_idr); |
| idr_destroy(&private->syncsource_idr); |
| |
| /* When using global pagetables, do not detach global pagetable */ |
| if (private->pagetable->name != KGSL_MMU_GLOBAL_PT) |
| kgsl_mmu_putpagetable(private->pagetable); |
| |
| kfree(private); |
| } |
| |
| void |
| kgsl_process_private_put(struct kgsl_process_private *private) |
| { |
| if (private) |
| kref_put(&private->refcount, kgsl_destroy_process_private); |
| } |
| |
| /** |
| * kgsl_process_private_find() - Find the process associated with the specified |
| * name |
| * @name: pid_t of the process to search for |
| * Return the process struct for the given ID. |
| */ |
| struct kgsl_process_private *kgsl_process_private_find(pid_t pid) |
| { |
| struct kgsl_process_private *p, *private = NULL; |
| |
| mutex_lock(&kgsl_driver.process_mutex); |
| list_for_each_entry(p, &kgsl_driver.process_list, list) { |
| if (p->pid == pid) { |
| if (kgsl_process_private_get(p)) |
| private = p; |
| break; |
| } |
| } |
| mutex_unlock(&kgsl_driver.process_mutex); |
| return private; |
| } |
| |
| static struct kgsl_process_private *kgsl_process_private_new( |
| struct kgsl_device *device) |
| { |
| struct kgsl_process_private *private; |
| pid_t tgid = task_tgid_nr(current); |
| |
| /* Search in the process list */ |
| list_for_each_entry(private, &kgsl_driver.process_list, list) { |
| if (private->pid == tgid) { |
| if (!kgsl_process_private_get(private)) |
| private = ERR_PTR(-EINVAL); |
| return private; |
| } |
| } |
| |
| /* Create a new object */ |
| private = kzalloc(sizeof(struct kgsl_process_private), GFP_KERNEL); |
| if (private == NULL) |
| return ERR_PTR(-ENOMEM); |
| |
| kref_init(&private->refcount); |
| |
| private->pid = tgid; |
| get_task_comm(private->comm, current->group_leader); |
| |
| spin_lock_init(&private->mem_lock); |
| spin_lock_init(&private->syncsource_lock); |
| |
| idr_init(&private->mem_idr); |
| idr_init(&private->syncsource_idr); |
| |
| /* Allocate a pagetable for the new process object */ |
| private->pagetable = kgsl_mmu_getpagetable(&device->mmu, tgid); |
| if (IS_ERR(private->pagetable)) { |
| int err = PTR_ERR(private->pagetable); |
| |
| idr_destroy(&private->mem_idr); |
| idr_destroy(&private->syncsource_idr); |
| |
| kfree(private); |
| private = ERR_PTR(err); |
| } |
| |
| return private; |
| } |
| |
| static void process_release_memory(struct kgsl_process_private *private) |
| { |
| struct kgsl_mem_entry *entry; |
| int next = 0; |
| |
| while (1) { |
| spin_lock(&private->mem_lock); |
| entry = idr_get_next(&private->mem_idr, &next); |
| if (entry == NULL) { |
| spin_unlock(&private->mem_lock); |
| break; |
| } |
| /* |
| * If the free pending flag is not set it means that user space |
| * did not free it's reference to this entry, in that case |
| * free a reference to this entry, other references are from |
| * within kgsl so they will be freed eventually by kgsl |
| */ |
| if (!entry->pending_free) { |
| entry->pending_free = 1; |
| spin_unlock(&private->mem_lock); |
| kgsl_mem_entry_put(entry); |
| } else { |
| spin_unlock(&private->mem_lock); |
| } |
| next = next + 1; |
| } |
| } |
| |
| static void process_release_sync_sources(struct kgsl_process_private *private) |
| { |
| struct kgsl_syncsource *syncsource; |
| int next = 0; |
| |
| while (1) { |
| spin_lock(&private->syncsource_lock); |
| syncsource = idr_get_next(&private->syncsource_idr, &next); |
| spin_unlock(&private->syncsource_lock); |
| |
| if (syncsource == NULL) |
| break; |
| |
| kgsl_syncsource_put(syncsource); |
| next = next + 1; |
| } |
| } |
| |
| static void kgsl_process_private_close(struct kgsl_device_private *dev_priv, |
| struct kgsl_process_private *private) |
| { |
| mutex_lock(&kgsl_driver.process_mutex); |
| |
| if (--private->fd_count > 0) { |
| mutex_unlock(&kgsl_driver.process_mutex); |
| kgsl_process_private_put(private); |
| return; |
| } |
| |
| /* |
| * If this is the last file on the process take down the debug |
| * directories and garbage collect any outstanding resources |
| */ |
| |
| kgsl_process_uninit_sysfs(private); |
| debugfs_remove_recursive(private->debug_root); |
| |
| process_release_sync_sources(private); |
| |
| /* When using global pagetables, do not detach global pagetable */ |
| if (private->pagetable->name != KGSL_MMU_GLOBAL_PT) |
| kgsl_mmu_detach_pagetable(private->pagetable); |
| |
| /* Remove the process struct from the master list */ |
| list_del(&private->list); |
| |
| /* |
| * Unlock the mutex before releasing the memory - this prevents a |
| * deadlock with the IOMMU mutex if a page fault occurs |
| */ |
| mutex_unlock(&kgsl_driver.process_mutex); |
| |
| process_release_memory(private); |
| |
| kgsl_process_private_put(private); |
| } |
| |
| |
| static struct kgsl_process_private *kgsl_process_private_open( |
| struct kgsl_device *device) |
| { |
| struct kgsl_process_private *private; |
| |
| mutex_lock(&kgsl_driver.process_mutex); |
| private = kgsl_process_private_new(device); |
| |
| if (IS_ERR(private)) |
| goto done; |
| |
| /* |
| * If this is a new process create the debug directories and add it to |
| * the process list |
| */ |
| |
| if (private->fd_count++ == 0) { |
| kgsl_process_init_sysfs(device, private); |
| kgsl_process_init_debugfs(private); |
| |
| list_add(&private->list, &kgsl_driver.process_list); |
| } |
| |
| done: |
| mutex_unlock(&kgsl_driver.process_mutex); |
| return private; |
| } |
| |
| static int kgsl_close_device(struct kgsl_device *device) |
| { |
| int result = 0; |
| |
| mutex_lock(&device->mutex); |
| device->open_count--; |
| if (device->open_count == 0) { |
| |
| /* Wait for the active count to go to 0 */ |
| kgsl_active_count_wait(device, 0); |
| |
| /* Fail if the wait times out */ |
| BUG_ON(atomic_read(&device->active_cnt) > 0); |
| |
| result = kgsl_pwrctrl_change_state(device, KGSL_STATE_INIT); |
| } |
| mutex_unlock(&device->mutex); |
| return result; |
| |
| } |
| |
| static void device_release_contexts(struct kgsl_device_private *dev_priv) |
| { |
| struct kgsl_device *device = dev_priv->device; |
| struct kgsl_context *context; |
| int next = 0; |
| int result = 0; |
| |
| while (1) { |
| read_lock(&device->context_lock); |
| context = idr_get_next(&device->context_idr, &next); |
| |
| if (context == NULL) { |
| read_unlock(&device->context_lock); |
| break; |
| } else if (context->dev_priv == dev_priv) { |
| /* |
| * Hold a reference to the context in case somebody |
| * tries to put it while we are detaching |
| */ |
| result = _kgsl_context_get(context); |
| } |
| read_unlock(&device->context_lock); |
| |
| if (result) { |
| kgsl_context_detach(context); |
| kgsl_context_put(context); |
| result = 0; |
| } |
| |
| next = next + 1; |
| } |
| } |
| |
| static int kgsl_release(struct inode *inodep, struct file *filep) |
| { |
| struct kgsl_device_private *dev_priv = filep->private_data; |
| struct kgsl_device *device = dev_priv->device; |
| int result; |
| |
| filep->private_data = NULL; |
| |
| /* Release the contexts for the file */ |
| device_release_contexts(dev_priv); |
| |
| /* Close down the process wide resources for the file */ |
| kgsl_process_private_close(dev_priv, dev_priv->process_priv); |
| |
| kfree(dev_priv); |
| |
| result = kgsl_close_device(device); |
| pm_runtime_put(&device->pdev->dev); |
| |
| return result; |
| } |
| |
| static int kgsl_open_device(struct kgsl_device *device) |
| { |
| int result = 0; |
| |
| mutex_lock(&device->mutex); |
| if (device->open_count == 0) { |
| /* |
| * active_cnt special case: we are starting up for the first |
| * time, so use this sequence instead of the kgsl_pwrctrl_wake() |
| * which will be called by kgsl_active_count_get(). |
| */ |
| atomic_inc(&device->active_cnt); |
| kgsl_sharedmem_set(device, &device->memstore, 0, 0, |
| device->memstore.size); |
| kgsl_sharedmem_set(device, &device->scratch, 0, 0, |
| device->scratch.size); |
| |
| result = device->ftbl->init(device); |
| if (result) |
| goto err; |
| |
| result = device->ftbl->start(device, 0); |
| if (result) |
| goto err; |
| /* |
| * Make sure the gates are open, so they don't block until |
| * we start suspend or FT. |
| */ |
| complete_all(&device->hwaccess_gate); |
| kgsl_pwrctrl_change_state(device, KGSL_STATE_ACTIVE); |
| kgsl_active_count_put(device); |
| } |
| device->open_count++; |
| err: |
| if (result) { |
| kgsl_pwrctrl_change_state(device, KGSL_STATE_INIT); |
| atomic_dec(&device->active_cnt); |
| } |
| |
| mutex_unlock(&device->mutex); |
| return result; |
| } |
| |
| static int kgsl_open(struct inode *inodep, struct file *filep) |
| { |
| int result; |
| struct kgsl_device_private *dev_priv; |
| struct kgsl_device *device; |
| unsigned int minor = iminor(inodep); |
| |
| device = kgsl_get_minor(minor); |
| BUG_ON(device == NULL); |
| |
| result = pm_runtime_get_sync(&device->pdev->dev); |
| if (result < 0) { |
| KGSL_DRV_ERR(device, |
| "Runtime PM: Unable to wake up the device, rc = %d\n", |
| result); |
| return result; |
| } |
| result = 0; |
| |
| dev_priv = kzalloc(sizeof(struct kgsl_device_private), GFP_KERNEL); |
| if (dev_priv == NULL) { |
| result = -ENOMEM; |
| goto err; |
| } |
| |
| dev_priv->device = device; |
| filep->private_data = dev_priv; |
| |
| result = kgsl_open_device(device); |
| if (result) |
| goto err; |
| |
| /* |
| * Get file (per process) private struct. This must be done |
| * after the first start so that the global pagetable mappings |
| * are set up before we create the per-process pagetable. |
| */ |
| dev_priv->process_priv = kgsl_process_private_open(device); |
| if (IS_ERR(dev_priv->process_priv)) { |
| result = PTR_ERR(dev_priv->process_priv); |
| kgsl_close_device(device); |
| goto err; |
| } |
| |
| err: |
| if (result) { |
| filep->private_data = NULL; |
| kfree(dev_priv); |
| pm_runtime_put(&device->pdev->dev); |
| } |
| return result; |
| } |
| |
| #define GPUADDR_IN_MEMDESC(_val, _memdesc) \ |
| (((_val) >= (_memdesc)->gpuaddr) && \ |
| ((_val) < ((_memdesc)->gpuaddr + (_memdesc)->size))) |
| |
| /** |
| * kgsl_sharedmem_find() - Find a gpu memory allocation |
| * |
| * @private: private data for the process to check. |
| * @gpuaddr: start address of the region |
| * |
| * Find a gpu allocation. Caller must kgsl_mem_entry_put() |
| * the returned entry when finished using it. |
| */ |
| struct kgsl_mem_entry * __must_check |
| kgsl_sharedmem_find(struct kgsl_process_private *private, uint64_t gpuaddr) |
| { |
| int ret = 0, id; |
| struct kgsl_mem_entry *entry = NULL; |
| |
| if (!private) |
| return NULL; |
| |
| if (!kgsl_mmu_gpuaddr_in_range(private->pagetable, gpuaddr)) |
| return NULL; |
| |
| spin_lock(&private->mem_lock); |
| idr_for_each_entry(&private->mem_idr, entry, id) { |
| if (GPUADDR_IN_MEMDESC(gpuaddr, &entry->memdesc)) { |
| ret = kgsl_mem_entry_get(entry); |
| break; |
| } |
| } |
| spin_unlock(&private->mem_lock); |
| |
| return (ret == 0) ? NULL : entry; |
| } |
| EXPORT_SYMBOL(kgsl_sharedmem_find); |
| |
| struct kgsl_mem_entry * __must_check |
| kgsl_sharedmem_find_id_flags(struct kgsl_process_private *process, |
| unsigned int id, uint64_t flags) |
| { |
| int count = 0; |
| struct kgsl_mem_entry *entry; |
| |
| spin_lock(&process->mem_lock); |
| entry = idr_find(&process->mem_idr, id); |
| if (entry) |
| if (!entry->pending_free && |
| (flags & entry->memdesc.flags) == flags) |
| count = kgsl_mem_entry_get(entry); |
| spin_unlock(&process->mem_lock); |
| |
| return (count == 0) ? NULL : entry; |
| } |
| |
| /** |
| * kgsl_sharedmem_find_id() - find a memory entry by id |
| * @process: the owning process |
| * @id: id to find |
| * |
| * @returns - the mem_entry or NULL |
| * |
| * Caller must kgsl_mem_entry_put() the returned entry, when finished using |
| * it. |
| */ |
| struct kgsl_mem_entry * __must_check |
| kgsl_sharedmem_find_id(struct kgsl_process_private *process, unsigned int id) |
| { |
| return kgsl_sharedmem_find_id_flags(process, id, 0); |
| } |
| |
| /** |
| * kgsl_mem_entry_unset_pend() - Unset the pending free flag of an entry |
| * @entry - The memory entry |
| */ |
| static inline void kgsl_mem_entry_unset_pend(struct kgsl_mem_entry *entry) |
| { |
| if (entry == NULL) |
| return; |
| spin_lock(&entry->priv->mem_lock); |
| entry->pending_free = 0; |
| spin_unlock(&entry->priv->mem_lock); |
| } |
| |
| /** |
| * kgsl_mem_entry_set_pend() - Set the pending free flag of a memory entry |
| * @entry - The memory entry |
| * |
| * @returns - true if pending flag was 0 else false |
| * |
| * This function will set the pending free flag if it is previously unset. Used |
| * to prevent race condition between ioctls calling free/freememontimestamp |
| * on the same entry. Whichever thread set's the flag first will do the free. |
| */ |
| static inline bool kgsl_mem_entry_set_pend(struct kgsl_mem_entry *entry) |
| { |
| bool ret = false; |
| |
| if (entry == NULL) |
| return false; |
| |
| spin_lock(&entry->priv->mem_lock); |
| if (!entry->pending_free) { |
| entry->pending_free = 1; |
| ret = true; |
| } |
| spin_unlock(&entry->priv->mem_lock); |
| return ret; |
| } |
| |
| /*call all ioctl sub functions with driver locked*/ |
| long kgsl_ioctl_device_getproperty(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| int result = 0; |
| struct kgsl_device_getproperty *param = data; |
| |
| switch (param->type) { |
| case KGSL_PROP_VERSION: |
| { |
| struct kgsl_version version; |
| |
| if (param->sizebytes != sizeof(version)) { |
| result = -EINVAL; |
| break; |
| } |
| |
| version.drv_major = KGSL_VERSION_MAJOR; |
| version.drv_minor = KGSL_VERSION_MINOR; |
| version.dev_major = dev_priv->device->ver_major; |
| version.dev_minor = dev_priv->device->ver_minor; |
| |
| if (copy_to_user(param->value, &version, sizeof(version))) |
| result = -EFAULT; |
| |
| break; |
| } |
| case KGSL_PROP_GPU_RESET_STAT: |
| { |
| /* Return reset status of given context and clear it */ |
| uint32_t id; |
| struct kgsl_context *context; |
| |
| if (param->sizebytes != sizeof(unsigned int)) { |
| result = -EINVAL; |
| break; |
| } |
| /* We expect the value passed in to contain the context id */ |
| if (copy_from_user(&id, param->value, |
| sizeof(unsigned int))) { |
| result = -EFAULT; |
| break; |
| } |
| context = kgsl_context_get_owner(dev_priv, id); |
| if (!context) { |
| result = -EINVAL; |
| break; |
| } |
| /* |
| * Copy the reset status to value which also serves as |
| * the out parameter |
| */ |
| if (copy_to_user(param->value, &(context->reset_status), |
| sizeof(unsigned int))) |
| result = -EFAULT; |
| else { |
| /* Clear reset status once its been queried */ |
| context->reset_status = KGSL_CTX_STAT_NO_ERROR; |
| } |
| |
| kgsl_context_put(context); |
| break; |
| } |
| default: |
| if (is_compat_task()) |
| result = dev_priv->device->ftbl->getproperty_compat( |
| dev_priv->device, param->type, |
| param->value, param->sizebytes); |
| else |
| result = dev_priv->device->ftbl->getproperty( |
| dev_priv->device, param->type, |
| param->value, param->sizebytes); |
| } |
| |
| |
| return result; |
| } |
| |
| long kgsl_ioctl_device_setproperty(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| int result = 0; |
| /* The getproperty struct is reused for setproperty too */ |
| struct kgsl_device_getproperty *param = data; |
| |
| /* Reroute to compat version if coming from compat_ioctl */ |
| if (is_compat_task()) |
| result = dev_priv->device->ftbl->setproperty_compat( |
| dev_priv, param->type, param->value, |
| param->sizebytes); |
| else if (dev_priv->device->ftbl->setproperty) |
| result = dev_priv->device->ftbl->setproperty( |
| dev_priv, param->type, param->value, |
| param->sizebytes); |
| |
| return result; |
| } |
| |
| long kgsl_ioctl_device_waittimestamp_ctxtid( |
| struct kgsl_device_private *dev_priv, unsigned int cmd, |
| void *data) |
| { |
| struct kgsl_device_waittimestamp_ctxtid *param = data; |
| struct kgsl_device *device = dev_priv->device; |
| long result = -EINVAL; |
| unsigned int temp_cur_ts = 0; |
| struct kgsl_context *context; |
| |
| context = kgsl_context_get_owner(dev_priv, param->context_id); |
| if (context == NULL) |
| return result; |
| |
| kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, |
| &temp_cur_ts); |
| |
| trace_kgsl_waittimestamp_entry(device, context->id, temp_cur_ts, |
| param->timestamp, param->timeout); |
| |
| result = device->ftbl->waittimestamp(device, context, param->timestamp, |
| param->timeout); |
| |
| kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, |
| &temp_cur_ts); |
| trace_kgsl_waittimestamp_exit(device, temp_cur_ts, result); |
| |
| kgsl_context_put(context); |
| |
| return result; |
| } |
| |
| static inline bool _check_context_is_sparse(struct kgsl_context *context, |
| uint64_t flags) |
| { |
| if ((context->flags & KGSL_CONTEXT_SPARSE) || |
| (flags & KGSL_DRAWOBJ_SPARSE)) |
| return true; |
| |
| return false; |
| } |
| |
| |
| long kgsl_ioctl_rb_issueibcmds(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_ringbuffer_issueibcmds *param = data; |
| struct kgsl_device *device = dev_priv->device; |
| struct kgsl_context *context; |
| struct kgsl_drawobj *drawobj; |
| struct kgsl_drawobj_cmd *cmdobj; |
| long result = -EINVAL; |
| |
| /* The legacy functions don't support synchronization commands */ |
| if ((param->flags & (KGSL_DRAWOBJ_SYNC | KGSL_DRAWOBJ_MARKER))) |
| return -EINVAL; |
| |
| /* Sanity check the number of IBs */ |
| if (param->flags & KGSL_DRAWOBJ_SUBMIT_IB_LIST && |
| (param->numibs == 0 || param->numibs > KGSL_MAX_NUMIBS)) |
| return -EINVAL; |
| |
| /* Get the context */ |
| context = kgsl_context_get_owner(dev_priv, param->drawctxt_id); |
| if (context == NULL) |
| return -EINVAL; |
| |
| if (_check_context_is_sparse(context, param->flags)) { |
| kgsl_context_put(context); |
| return -EINVAL; |
| } |
| |
| cmdobj = kgsl_drawobj_cmd_create(device, context, param->flags, |
| CMDOBJ_TYPE); |
| if (IS_ERR(cmdobj)) { |
| kgsl_context_put(context); |
| return PTR_ERR(cmdobj); |
| } |
| |
| drawobj = DRAWOBJ(cmdobj); |
| |
| if (param->flags & KGSL_DRAWOBJ_SUBMIT_IB_LIST) |
| result = kgsl_drawobj_cmd_add_ibdesc_list(device, cmdobj, |
| (void __user *) param->ibdesc_addr, |
| param->numibs); |
| else { |
| struct kgsl_ibdesc ibdesc; |
| /* Ultra legacy path */ |
| |
| ibdesc.gpuaddr = param->ibdesc_addr; |
| ibdesc.sizedwords = param->numibs; |
| ibdesc.ctrl = 0; |
| |
| result = kgsl_drawobj_cmd_add_ibdesc(device, cmdobj, &ibdesc); |
| } |
| |
| if (result == 0) |
| result = dev_priv->device->ftbl->queue_cmds(dev_priv, context, |
| &drawobj, 1, ¶m->timestamp); |
| |
| /* |
| * -EPROTO is a "success" error - it just tells the user that the |
| * context had previously faulted |
| */ |
| if (result && result != -EPROTO) |
| kgsl_drawobj_destroy(drawobj); |
| |
| kgsl_context_put(context); |
| return result; |
| } |
| |
| /* Returns 0 on failure. Returns command type(s) on success */ |
| static unsigned int _process_command_input(struct kgsl_device *device, |
| unsigned int flags, unsigned int numcmds, |
| unsigned int numobjs, unsigned int numsyncs) |
| { |
| if (numcmds > KGSL_MAX_NUMIBS || |
| numobjs > KGSL_MAX_NUMIBS || |
| numsyncs > KGSL_MAX_SYNCPOINTS) |
| return 0; |
| |
| /* |
| * The SYNC bit is supposed to identify a dummy sync object |
| * so warn the user if they specified any IBs with it. |
| * A MARKER command can either have IBs or not but if the |
| * command has 0 IBs it is automatically assumed to be a marker. |
| */ |
| |
| /* If they specify the flag, go with what they say */ |
| if (flags & KGSL_DRAWOBJ_MARKER) |
| return MARKEROBJ_TYPE; |
| else if (flags & KGSL_DRAWOBJ_SYNC) |
| return SYNCOBJ_TYPE; |
| |
| /* If not, deduce what they meant */ |
| if (numsyncs && numcmds) |
| return SYNCOBJ_TYPE | CMDOBJ_TYPE; |
| else if (numsyncs) |
| return SYNCOBJ_TYPE; |
| else if (numcmds) |
| return CMDOBJ_TYPE; |
| else if (numcmds == 0) |
| return MARKEROBJ_TYPE; |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_submit_commands(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_submit_commands *param = data; |
| struct kgsl_device *device = dev_priv->device; |
| struct kgsl_context *context; |
| struct kgsl_drawobj *drawobj[2]; |
| unsigned int type; |
| long result; |
| unsigned int i = 0; |
| |
| type = _process_command_input(device, param->flags, param->numcmds, 0, |
| param->numsyncs); |
| if (!type) |
| return -EINVAL; |
| |
| context = kgsl_context_get_owner(dev_priv, param->context_id); |
| if (context == NULL) |
| return -EINVAL; |
| |
| if (_check_context_is_sparse(context, param->flags)) { |
| kgsl_context_put(context); |
| return -EINVAL; |
| } |
| |
| if (type & SYNCOBJ_TYPE) { |
| struct kgsl_drawobj_sync *syncobj = |
| kgsl_drawobj_sync_create(device, context); |
| if (IS_ERR(syncobj)) { |
| result = PTR_ERR(syncobj); |
| goto done; |
| } |
| |
| drawobj[i++] = DRAWOBJ(syncobj); |
| |
| result = kgsl_drawobj_sync_add_syncpoints(device, syncobj, |
| param->synclist, param->numsyncs); |
| if (result) |
| goto done; |
| } |
| |
| if (type & (CMDOBJ_TYPE | MARKEROBJ_TYPE)) { |
| struct kgsl_drawobj_cmd *cmdobj = |
| kgsl_drawobj_cmd_create(device, |
| context, param->flags, type); |
| if (IS_ERR(cmdobj)) { |
| result = PTR_ERR(cmdobj); |
| goto done; |
| } |
| |
| drawobj[i++] = DRAWOBJ(cmdobj); |
| |
| result = kgsl_drawobj_cmd_add_ibdesc_list(device, cmdobj, |
| param->cmdlist, param->numcmds); |
| if (result) |
| goto done; |
| |
| /* If no profiling buffer was specified, clear the flag */ |
| if (cmdobj->profiling_buf_entry == NULL) |
| DRAWOBJ(cmdobj)->flags &= ~KGSL_DRAWOBJ_PROFILING; |
| } |
| |
| result = device->ftbl->queue_cmds(dev_priv, context, drawobj, |
| i, ¶m->timestamp); |
| |
| done: |
| /* |
| * -EPROTO is a "success" error - it just tells the user that the |
| * context had previously faulted |
| */ |
| if (result && result != -EPROTO) |
| while (i--) |
| kgsl_drawobj_destroy(drawobj[i]); |
| |
| |
| kgsl_context_put(context); |
| return result; |
| } |
| |
| long kgsl_ioctl_gpu_command(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpu_command *param = data; |
| struct kgsl_device *device = dev_priv->device; |
| struct kgsl_context *context; |
| struct kgsl_drawobj *drawobj[2]; |
| unsigned int type; |
| long result; |
| unsigned int i = 0; |
| |
| type = _process_command_input(device, param->flags, param->numcmds, |
| param->numobjs, param->numsyncs); |
| if (!type) |
| return -EINVAL; |
| |
| context = kgsl_context_get_owner(dev_priv, param->context_id); |
| if (context == NULL) |
| return -EINVAL; |
| |
| if (_check_context_is_sparse(context, param->flags)) { |
| kgsl_context_put(context); |
| return -EINVAL; |
| } |
| |
| if (type & SYNCOBJ_TYPE) { |
| struct kgsl_drawobj_sync *syncobj = |
| kgsl_drawobj_sync_create(device, context); |
| |
| if (IS_ERR(syncobj)) { |
| result = PTR_ERR(syncobj); |
| goto done; |
| } |
| |
| drawobj[i++] = DRAWOBJ(syncobj); |
| |
| result = kgsl_drawobj_sync_add_synclist(device, syncobj, |
| to_user_ptr(param->synclist), |
| param->syncsize, param->numsyncs); |
| if (result) |
| goto done; |
| } |
| |
| if (type & (CMDOBJ_TYPE | MARKEROBJ_TYPE)) { |
| struct kgsl_drawobj_cmd *cmdobj = |
| kgsl_drawobj_cmd_create(device, |
| context, param->flags, type); |
| |
| if (IS_ERR(cmdobj)) { |
| result = PTR_ERR(cmdobj); |
| goto done; |
| } |
| |
| drawobj[i++] = DRAWOBJ(cmdobj); |
| |
| result = kgsl_drawobj_cmd_add_cmdlist(device, cmdobj, |
| to_user_ptr(param->cmdlist), |
| param->cmdsize, param->numcmds); |
| if (result) |
| goto done; |
| |
| result = kgsl_drawobj_cmd_add_memlist(device, cmdobj, |
| to_user_ptr(param->objlist), |
| param->objsize, param->numobjs); |
| if (result) |
| goto done; |
| |
| /* If no profiling buffer was specified, clear the flag */ |
| if (cmdobj->profiling_buf_entry == NULL) |
| DRAWOBJ(cmdobj)->flags &= ~KGSL_DRAWOBJ_PROFILING; |
| } |
| |
| result = device->ftbl->queue_cmds(dev_priv, context, drawobj, |
| i, ¶m->timestamp); |
| |
| done: |
| /* |
| * -EPROTO is a "success" error - it just tells the user that the |
| * context had previously faulted |
| */ |
| if (result && result != -EPROTO) |
| while (i--) |
| kgsl_drawobj_destroy(drawobj[i]); |
| |
| kgsl_context_put(context); |
| return result; |
| } |
| |
| long kgsl_ioctl_cmdstream_readtimestamp_ctxtid(struct kgsl_device_private |
| *dev_priv, unsigned int cmd, |
| void *data) |
| { |
| struct kgsl_cmdstream_readtimestamp_ctxtid *param = data; |
| struct kgsl_device *device = dev_priv->device; |
| struct kgsl_context *context; |
| long result = -EINVAL; |
| |
| mutex_lock(&device->mutex); |
| context = kgsl_context_get_owner(dev_priv, param->context_id); |
| |
| if (context) { |
| result = kgsl_readtimestamp(device, context, |
| param->type, ¶m->timestamp); |
| |
| trace_kgsl_readtimestamp(device, context->id, |
| param->type, param->timestamp); |
| } |
| |
| kgsl_context_put(context); |
| mutex_unlock(&device->mutex); |
| return result; |
| } |
| |
| long kgsl_ioctl_drawctxt_create(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| int result = 0; |
| struct kgsl_drawctxt_create *param = data; |
| struct kgsl_context *context = NULL; |
| struct kgsl_device *device = dev_priv->device; |
| |
| context = device->ftbl->drawctxt_create(dev_priv, ¶m->flags); |
| if (IS_ERR(context)) { |
| result = PTR_ERR(context); |
| goto done; |
| } |
| trace_kgsl_context_create(dev_priv->device, context, param->flags); |
| |
| /* Commit the pointer to the context in context_idr */ |
| write_lock(&device->context_lock); |
| idr_replace(&device->context_idr, context, context->id); |
| write_unlock(&device->context_lock); |
| |
| param->drawctxt_id = context->id; |
| done: |
| return result; |
| } |
| |
| long kgsl_ioctl_drawctxt_destroy(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_drawctxt_destroy *param = data; |
| struct kgsl_context *context; |
| |
| context = kgsl_context_get_owner(dev_priv, param->drawctxt_id); |
| if (context == NULL) |
| return -EINVAL; |
| |
| kgsl_context_detach(context); |
| kgsl_context_put(context); |
| |
| return 0; |
| } |
| |
| static long gpumem_free_entry(struct kgsl_mem_entry *entry) |
| { |
| pid_t ptname = 0; |
| |
| if (!kgsl_mem_entry_set_pend(entry)) |
| return -EBUSY; |
| |
| trace_kgsl_mem_free(entry); |
| |
| if (entry->memdesc.pagetable != NULL) |
| ptname = entry->memdesc.pagetable->name; |
| |
| kgsl_memfree_add(entry->priv->pid, ptname, entry->memdesc.gpuaddr, |
| entry->memdesc.size, entry->memdesc.flags); |
| |
| kgsl_mem_entry_put(entry); |
| |
| return 0; |
| } |
| |
| static void gpumem_free_func(struct kgsl_device *device, |
| struct kgsl_event_group *group, void *priv, int ret) |
| { |
| struct kgsl_context *context = group->context; |
| struct kgsl_mem_entry *entry = priv; |
| unsigned int timestamp; |
| |
| kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, ×tamp); |
| |
| /* Free the memory for all event types */ |
| trace_kgsl_mem_timestamp_free(device, entry, KGSL_CONTEXT_ID(context), |
| timestamp, 0); |
| kgsl_mem_entry_put(entry); |
| } |
| |
| static long gpumem_free_entry_on_timestamp(struct kgsl_device *device, |
| struct kgsl_mem_entry *entry, |
| struct kgsl_context *context, unsigned int timestamp) |
| { |
| int ret; |
| unsigned int temp; |
| |
| if (!kgsl_mem_entry_set_pend(entry)) |
| return -EBUSY; |
| |
| kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, &temp); |
| trace_kgsl_mem_timestamp_queue(device, entry, context->id, temp, |
| timestamp); |
| ret = kgsl_add_event(device, &context->events, |
| timestamp, gpumem_free_func, entry); |
| |
| if (ret) |
| kgsl_mem_entry_unset_pend(entry); |
| |
| return ret; |
| } |
| |
| long kgsl_ioctl_sharedmem_free(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_sharedmem_free *param = data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mem_entry *entry; |
| long ret; |
| |
| entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| ret = gpumem_free_entry(entry); |
| kgsl_mem_entry_put(entry); |
| |
| return ret; |
| } |
| |
| long kgsl_ioctl_gpumem_free_id(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpumem_free_id *param = data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mem_entry *entry; |
| long ret; |
| |
| entry = kgsl_sharedmem_find_id(private, param->id); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| ret = gpumem_free_entry(entry); |
| kgsl_mem_entry_put(entry); |
| |
| return ret; |
| } |
| |
| static long gpuobj_free_on_timestamp(struct kgsl_device_private *dev_priv, |
| struct kgsl_mem_entry *entry, struct kgsl_gpuobj_free *param) |
| { |
| struct kgsl_gpu_event_timestamp event; |
| struct kgsl_context *context; |
| long ret; |
| |
| memset(&event, 0, sizeof(event)); |
| |
| ret = _copy_from_user(&event, to_user_ptr(param->priv), |
| sizeof(event), param->len); |
| if (ret) |
| return ret; |
| |
| if (event.context_id == 0) |
| return -EINVAL; |
| |
| context = kgsl_context_get_owner(dev_priv, event.context_id); |
| if (context == NULL) |
| return -EINVAL; |
| |
| ret = gpumem_free_entry_on_timestamp(dev_priv->device, entry, context, |
| event.timestamp); |
| |
| kgsl_context_put(context); |
| return ret; |
| } |
| |
| static void gpuobj_free_fence_func(void *priv) |
| { |
| struct kgsl_mem_entry *entry = priv; |
| |
| INIT_WORK(&entry->work, _deferred_put); |
| queue_work(kgsl_driver.mem_workqueue, &entry->work); |
| } |
| |
| static long gpuobj_free_on_fence(struct kgsl_device_private *dev_priv, |
| struct kgsl_mem_entry *entry, struct kgsl_gpuobj_free *param) |
| { |
| struct kgsl_sync_fence_waiter *handle; |
| struct kgsl_gpu_event_fence event; |
| long ret; |
| |
| if (!kgsl_mem_entry_set_pend(entry)) |
| return -EBUSY; |
| |
| memset(&event, 0, sizeof(event)); |
| |
| ret = _copy_from_user(&event, to_user_ptr(param->priv), |
| sizeof(event), param->len); |
| if (ret) { |
| kgsl_mem_entry_unset_pend(entry); |
| return ret; |
| } |
| |
| if (event.fd < 0) { |
| kgsl_mem_entry_unset_pend(entry); |
| return -EINVAL; |
| } |
| |
| handle = kgsl_sync_fence_async_wait(event.fd, |
| gpuobj_free_fence_func, entry); |
| |
| /* if handle is NULL the fence has already signaled */ |
| if (handle == NULL) |
| return gpumem_free_entry(entry); |
| |
| if (IS_ERR(handle)) { |
| kgsl_mem_entry_unset_pend(entry); |
| return PTR_ERR(handle); |
| } |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_gpuobj_free(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpuobj_free *param = data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mem_entry *entry; |
| long ret; |
| |
| entry = kgsl_sharedmem_find_id(private, param->id); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| /* If no event is specified then free immediately */ |
| if (!(param->flags & KGSL_GPUOBJ_FREE_ON_EVENT)) |
| ret = gpumem_free_entry(entry); |
| else if (param->type == KGSL_GPU_EVENT_TIMESTAMP) |
| ret = gpuobj_free_on_timestamp(dev_priv, entry, param); |
| else if (param->type == KGSL_GPU_EVENT_FENCE) |
| ret = gpuobj_free_on_fence(dev_priv, entry, param); |
| else |
| ret = -EINVAL; |
| |
| kgsl_mem_entry_put(entry); |
| return ret; |
| } |
| |
| long kgsl_ioctl_cmdstream_freememontimestamp_ctxtid( |
| struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_cmdstream_freememontimestamp_ctxtid *param = data; |
| struct kgsl_context *context = NULL; |
| struct kgsl_mem_entry *entry; |
| long ret = -EINVAL; |
| |
| if (param->type != KGSL_TIMESTAMP_RETIRED) |
| return -EINVAL; |
| |
| context = kgsl_context_get_owner(dev_priv, param->context_id); |
| if (context == NULL) |
| return -EINVAL; |
| |
| entry = kgsl_sharedmem_find(dev_priv->process_priv, |
| (uint64_t) param->gpuaddr); |
| if (entry == NULL) { |
| kgsl_context_put(context); |
| return -EINVAL; |
| } |
| |
| ret = gpumem_free_entry_on_timestamp(dev_priv->device, entry, |
| context, param->timestamp); |
| |
| kgsl_mem_entry_put(entry); |
| kgsl_context_put(context); |
| |
| return ret; |
| } |
| |
| static inline int _check_region(unsigned long start, unsigned long size, |
| uint64_t len) |
| { |
| uint64_t end = ((uint64_t) start) + size; |
| |
| return (end > len); |
| } |
| |
| static int check_vma_flags(struct vm_area_struct *vma, |
| unsigned int flags) |
| { |
| unsigned long flags_requested = (VM_READ | VM_WRITE); |
| |
| if (flags & KGSL_MEMFLAGS_GPUREADONLY) |
| flags_requested &= ~VM_WRITE; |
| |
| if ((vma->vm_flags & flags_requested) == flags_requested) |
| return 0; |
| |
| return -EFAULT; |
| } |
| |
| static int check_vma(struct vm_area_struct *vma, struct file *vmfile, |
| struct kgsl_memdesc *memdesc) |
| { |
| if (vma == NULL || vma->vm_file != vmfile) |
| return -EINVAL; |
| |
| /* userspace may not know the size, in which case use the whole vma */ |
| if (memdesc->size == 0) |
| memdesc->size = vma->vm_end - vma->vm_start; |
| /* range checking */ |
| if (vma->vm_start != memdesc->useraddr || |
| (memdesc->useraddr + memdesc->size) != vma->vm_end) |
| return -EINVAL; |
| return check_vma_flags(vma, memdesc->flags); |
| } |
| |
| static int memdesc_sg_virt(struct kgsl_memdesc *memdesc, struct file *vmfile) |
| { |
| int ret = 0; |
| long npages = 0, i; |
| size_t sglen = (size_t) (memdesc->size / PAGE_SIZE); |
| struct page **pages = NULL; |
| int write = ((memdesc->flags & KGSL_MEMFLAGS_GPUREADONLY) ? 0 : |
| FOLL_WRITE); |
| |
| if (sglen == 0 || sglen >= LONG_MAX) |
| return -EINVAL; |
| |
| pages = kgsl_malloc(sglen * sizeof(struct page *)); |
| if (pages == NULL) |
| return -ENOMEM; |
| |
| memdesc->sgt = kmalloc(sizeof(struct sg_table), GFP_KERNEL); |
| if (memdesc->sgt == NULL) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| down_read(¤t->mm->mmap_sem); |
| /* If we have vmfile, make sure we map the correct vma and map it all */ |
| if (vmfile != NULL) |
| ret = check_vma(find_vma(current->mm, memdesc->useraddr), |
| vmfile, memdesc); |
| |
| if (ret == 0) { |
| npages = get_user_pages(memdesc->useraddr, |
| sglen, write, pages, NULL); |
| ret = (npages < 0) ? (int)npages : 0; |
| } |
| up_read(¤t->mm->mmap_sem); |
| |
| if (ret) |
| goto out; |
| |
| if ((unsigned long) npages != sglen) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| ret = sg_alloc_table_from_pages(memdesc->sgt, pages, npages, |
| 0, memdesc->size, GFP_KERNEL); |
| out: |
| if (ret) { |
| for (i = 0; i < npages; i++) |
| put_page(pages[i]); |
| |
| kfree(memdesc->sgt); |
| memdesc->sgt = NULL; |
| } |
| kgsl_free(pages); |
| return ret; |
| } |
| |
| static int kgsl_setup_anon_useraddr(struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, unsigned long hostptr, |
| size_t offset, size_t size) |
| { |
| /* Map an anonymous memory chunk */ |
| |
| if (size == 0 || offset != 0 || |
| !IS_ALIGNED(size, PAGE_SIZE)) |
| return -EINVAL; |
| |
| entry->memdesc.pagetable = pagetable; |
| entry->memdesc.size = (uint64_t) size; |
| entry->memdesc.useraddr = hostptr; |
| entry->memdesc.flags |= KGSL_MEMFLAGS_USERMEM_ADDR; |
| |
| if (kgsl_memdesc_use_cpu_map(&entry->memdesc)) { |
| int ret; |
| |
| /* Register the address in the database */ |
| ret = kgsl_mmu_set_svm_region(pagetable, |
| (uint64_t) entry->memdesc.useraddr, (uint64_t) size); |
| |
| if (ret) |
| return ret; |
| |
| entry->memdesc.gpuaddr = (uint64_t) entry->memdesc.useraddr; |
| } |
| |
| return memdesc_sg_virt(&entry->memdesc, NULL); |
| } |
| |
| #ifdef CONFIG_DMA_SHARED_BUFFER |
| static int match_file(const void *p, struct file *file, unsigned int fd) |
| { |
| /* |
| * We must return fd + 1 because iterate_fd stops searching on |
| * non-zero return, but 0 is a valid fd. |
| */ |
| return (p == file) ? (fd + 1) : 0; |
| } |
| |
| static void _setup_cache_mode(struct kgsl_mem_entry *entry, |
| struct vm_area_struct *vma) |
| { |
| unsigned int mode; |
| pgprot_t pgprot = vma->vm_page_prot; |
| |
| if (pgprot_val(pgprot) == pgprot_val(pgprot_noncached(pgprot))) |
| mode = KGSL_CACHEMODE_UNCACHED; |
| else if (pgprot_val(pgprot) == pgprot_val(pgprot_writecombine(pgprot))) |
| mode = KGSL_CACHEMODE_WRITECOMBINE; |
| else |
| mode = KGSL_CACHEMODE_WRITEBACK; |
| |
| entry->memdesc.flags |= (mode << KGSL_CACHEMODE_SHIFT); |
| } |
| |
| static int kgsl_setup_dma_buf(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| struct dma_buf *dmabuf); |
| |
| static int kgsl_setup_dmabuf_useraddr(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, unsigned long hostptr) |
| { |
| struct vm_area_struct *vma; |
| struct dma_buf *dmabuf = NULL; |
| int ret; |
| |
| /* |
| * Find the VMA containing this pointer and figure out if it |
| * is a dma-buf. |
| */ |
| down_read(¤t->mm->mmap_sem); |
| vma = find_vma(current->mm, hostptr); |
| |
| if (vma && vma->vm_file) { |
| int fd; |
| |
| ret = check_vma_flags(vma, entry->memdesc.flags); |
| if (ret) { |
| up_read(¤t->mm->mmap_sem); |
| return ret; |
| } |
| |
| /* |
| * Check to see that this isn't our own memory that we have |
| * already mapped |
| */ |
| if (vma->vm_file->f_op == &kgsl_fops) { |
| up_read(¤t->mm->mmap_sem); |
| return -EFAULT; |
| } |
| |
| /* Look for the fd that matches this the vma file */ |
| fd = iterate_fd(current->files, 0, match_file, vma->vm_file); |
| if (fd != 0) |
| dmabuf = dma_buf_get(fd - 1); |
| } |
| up_read(¤t->mm->mmap_sem); |
| |
| if (IS_ERR_OR_NULL(dmabuf)) |
| return dmabuf ? PTR_ERR(dmabuf) : -ENODEV; |
| |
| ret = kgsl_setup_dma_buf(device, pagetable, entry, dmabuf); |
| if (ret) { |
| dma_buf_put(dmabuf); |
| return ret; |
| } |
| |
| /* Setup the user addr/cache mode for cache operations */ |
| entry->memdesc.useraddr = hostptr; |
| _setup_cache_mode(entry, vma); |
| |
| return 0; |
| } |
| #else |
| static int kgsl_setup_dmabuf_useraddr(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, unsigned long hostptr) |
| { |
| return -ENODEV; |
| } |
| #endif |
| |
| static int kgsl_setup_useraddr(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| unsigned long hostptr, size_t offset, size_t size) |
| { |
| int ret; |
| |
| if (hostptr == 0 || !IS_ALIGNED(hostptr, PAGE_SIZE)) |
| return -EINVAL; |
| |
| /* Try to set up a dmabuf - if it returns -ENODEV assume anonymous */ |
| ret = kgsl_setup_dmabuf_useraddr(device, pagetable, entry, hostptr); |
| if (ret != -ENODEV) |
| return ret; |
| |
| /* Okay - lets go legacy */ |
| return kgsl_setup_anon_useraddr(pagetable, entry, |
| hostptr, offset, size); |
| } |
| |
| static long _gpuobj_map_useraddr(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| struct kgsl_gpuobj_import *param) |
| { |
| struct kgsl_gpuobj_import_useraddr useraddr; |
| int ret; |
| |
| param->flags &= KGSL_MEMFLAGS_GPUREADONLY |
| | KGSL_CACHEMODE_MASK |
| | KGSL_MEMTYPE_MASK |
| | KGSL_MEMFLAGS_FORCE_32BIT; |
| |
| /* Specifying SECURE is an explicit error */ |
| if (param->flags & KGSL_MEMFLAGS_SECURE) |
| return -ENOTSUPP; |
| |
| ret = _copy_from_user(&useraddr, |
| to_user_ptr(param->priv), sizeof(useraddr), |
| param->priv_len); |
| if (ret) |
| return ret; |
| |
| /* Verify that the virtaddr and len are within bounds */ |
| if (useraddr.virtaddr > ULONG_MAX) |
| return -EINVAL; |
| |
| return kgsl_setup_useraddr(device, pagetable, entry, |
| (unsigned long) useraddr.virtaddr, 0, param->priv_len); |
| } |
| |
| #ifdef CONFIG_DMA_SHARED_BUFFER |
| static long _gpuobj_map_dma_buf(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| struct kgsl_gpuobj_import *param, |
| int *fd) |
| { |
| struct kgsl_gpuobj_import_dma_buf buf; |
| struct dma_buf *dmabuf; |
| int ret; |
| |
| /* |
| * If content protection is not enabled and secure buffer |
| * is requested to be mapped return error. |
| */ |
| if (entry->memdesc.flags & KGSL_MEMFLAGS_SECURE) { |
| if (!kgsl_mmu_is_secured(&device->mmu)) { |
| dev_WARN_ONCE(device->dev, 1, |
| "Secure buffer not supported"); |
| return -ENOTSUPP; |
| } |
| |
| entry->memdesc.priv |= KGSL_MEMDESC_SECURE; |
| } |
| |
| ret = _copy_from_user(&buf, to_user_ptr(param->priv), |
| sizeof(buf), param->priv_len); |
| if (ret) |
| return ret; |
| |
| if (buf.fd < 0) |
| return -EINVAL; |
| |
| *fd = buf.fd; |
| dmabuf = dma_buf_get(buf.fd); |
| |
| if (IS_ERR_OR_NULL(dmabuf)) |
| return (dmabuf == NULL) ? -EINVAL : PTR_ERR(dmabuf); |
| |
| ret = kgsl_setup_dma_buf(device, pagetable, entry, dmabuf); |
| if (ret) |
| dma_buf_put(dmabuf); |
| |
| return ret; |
| } |
| #else |
| static long _gpuobj_map_dma_buf(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| struct kgsl_gpuobj_import *param, |
| int *fd) |
| { |
| return -EINVAL; |
| } |
| #endif |
| |
| long kgsl_ioctl_gpuobj_import(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_gpuobj_import *param = data; |
| struct kgsl_mem_entry *entry; |
| int ret, fd = -1; |
| struct kgsl_mmu *mmu = &dev_priv->device->mmu; |
| |
| entry = kgsl_mem_entry_create(); |
| if (entry == NULL) |
| return -ENOMEM; |
| |
| param->flags &= KGSL_MEMFLAGS_GPUREADONLY |
| | KGSL_MEMTYPE_MASK |
| | KGSL_MEMALIGN_MASK |
| | KGSL_MEMFLAGS_USE_CPU_MAP |
| | KGSL_MEMFLAGS_SECURE |
| | KGSL_MEMFLAGS_FORCE_32BIT; |
| |
| entry->memdesc.flags = param->flags; |
| |
| if (MMU_FEATURE(mmu, KGSL_MMU_NEED_GUARD_PAGE)) |
| entry->memdesc.priv |= KGSL_MEMDESC_GUARD_PAGE; |
| |
| if (param->type == KGSL_USER_MEM_TYPE_ADDR) |
| ret = _gpuobj_map_useraddr(dev_priv->device, private->pagetable, |
| entry, param); |
| else if (param->type == KGSL_USER_MEM_TYPE_DMABUF) |
| ret = _gpuobj_map_dma_buf(dev_priv->device, private->pagetable, |
| entry, param, &fd); |
| else |
| ret = -ENOTSUPP; |
| |
| if (ret) |
| goto out; |
| |
| if (entry->memdesc.size >= SZ_1M) |
| kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_1M)); |
| else if (entry->memdesc.size >= SZ_64K) |
| kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_64K)); |
| |
| param->flags = entry->memdesc.flags; |
| |
| ret = kgsl_mem_entry_attach_process(dev_priv->device, private, entry); |
| if (ret) |
| goto unmap; |
| |
| param->id = entry->id; |
| |
| KGSL_STATS_ADD(entry->memdesc.size, &kgsl_driver.stats.mapped, |
| &kgsl_driver.stats.mapped_max); |
| |
| kgsl_process_add_stats(private, |
| kgsl_memdesc_usermem_type(&entry->memdesc), |
| entry->memdesc.size); |
| |
| trace_kgsl_mem_map(entry, fd); |
| |
| kgsl_mem_entry_commit_process(entry); |
| return 0; |
| |
| unmap: |
| if (param->type == KGSL_USER_MEM_TYPE_DMABUF) { |
| kgsl_destroy_ion(entry->priv_data); |
| entry->memdesc.sgt = NULL; |
| } |
| |
| kgsl_sharedmem_free(&entry->memdesc); |
| |
| out: |
| kfree(entry); |
| return ret; |
| } |
| |
| static long _map_usermem_addr(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, struct kgsl_mem_entry *entry, |
| unsigned long hostptr, size_t offset, size_t size) |
| { |
| if (!MMU_FEATURE(&device->mmu, KGSL_MMU_PAGED)) |
| return -EINVAL; |
| |
| /* No CPU mapped buffer could ever be secure */ |
| if (entry->memdesc.flags & KGSL_MEMFLAGS_SECURE) |
| return -EINVAL; |
| |
| return kgsl_setup_useraddr(device, pagetable, entry, hostptr, |
| offset, size); |
| } |
| |
| #ifdef CONFIG_DMA_SHARED_BUFFER |
| static int _map_usermem_dma_buf(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| unsigned int fd) |
| { |
| int ret; |
| struct dma_buf *dmabuf; |
| |
| /* |
| * If content protection is not enabled and secure buffer |
| * is requested to be mapped return error. |
| */ |
| |
| if (entry->memdesc.flags & KGSL_MEMFLAGS_SECURE) { |
| if (!kgsl_mmu_is_secured(&device->mmu)) { |
| dev_WARN_ONCE(device->dev, 1, |
| "Secure buffer not supported"); |
| return -EINVAL; |
| } |
| |
| entry->memdesc.priv |= KGSL_MEMDESC_SECURE; |
| } |
| |
| dmabuf = dma_buf_get(fd); |
| if (IS_ERR_OR_NULL(dmabuf)) { |
| ret = PTR_ERR(dmabuf); |
| return ret ? ret : -EINVAL; |
| } |
| ret = kgsl_setup_dma_buf(device, pagetable, entry, dmabuf); |
| if (ret) |
| dma_buf_put(dmabuf); |
| return ret; |
| } |
| #else |
| static int _map_usermem_dma_buf(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| unsigned int fd) |
| { |
| return -EINVAL; |
| } |
| #endif |
| |
| #ifdef CONFIG_DMA_SHARED_BUFFER |
| static int kgsl_setup_dma_buf(struct kgsl_device *device, |
| struct kgsl_pagetable *pagetable, |
| struct kgsl_mem_entry *entry, |
| struct dma_buf *dmabuf) |
| { |
| int ret = 0; |
| struct scatterlist *s; |
| struct sg_table *sg_table; |
| struct dma_buf_attachment *attach = NULL; |
| struct kgsl_dma_buf_meta *meta; |
| |
| meta = kzalloc(sizeof(*meta), GFP_KERNEL); |
| if (!meta) |
| return -ENOMEM; |
| |
| attach = dma_buf_attach(dmabuf, device->dev); |
| if (IS_ERR_OR_NULL(attach)) { |
| ret = attach ? PTR_ERR(attach) : -EINVAL; |
| goto out; |
| } |
| |
| meta->dmabuf = dmabuf; |
| meta->attach = attach; |
| |
| attach->priv = entry; |
| |
| entry->priv_data = meta; |
| entry->memdesc.pagetable = pagetable; |
| entry->memdesc.size = 0; |
| /* USE_CPU_MAP is not impemented for ION. */ |
| entry->memdesc.flags &= ~((uint64_t) KGSL_MEMFLAGS_USE_CPU_MAP); |
| entry->memdesc.flags |= KGSL_MEMFLAGS_USERMEM_ION; |
| |
| sg_table = dma_buf_map_attachment(attach, DMA_TO_DEVICE); |
| |
| if (IS_ERR_OR_NULL(sg_table)) { |
| ret = PTR_ERR(sg_table); |
| goto out; |
| } |
| |
| meta->table = sg_table; |
| entry->priv_data = meta; |
| entry->memdesc.sgt = sg_table; |
| |
| /* Calculate the size of the memdesc from the sglist */ |
| for (s = entry->memdesc.sgt->sgl; s != NULL; s = sg_next(s)) { |
| int priv = (entry->memdesc.priv & KGSL_MEMDESC_SECURE) ? 1 : 0; |
| |
| /* |
| * Check that each chunk of of the sg table matches the secure |
| * flag. |
| */ |
| |
| if (PagePrivate(sg_page(s)) != priv) { |
| ret = -EPERM; |
| goto out; |
| } |
| |
| entry->memdesc.size += (uint64_t) s->length; |
| } |
| |
| entry->memdesc.size = PAGE_ALIGN(entry->memdesc.size); |
| |
| out: |
| if (ret) { |
| if (!IS_ERR_OR_NULL(attach)) |
| dma_buf_detach(dmabuf, attach); |
| |
| |
| kfree(meta); |
| } |
| |
| return ret; |
| } |
| #endif |
| |
| #ifdef CONFIG_DMA_SHARED_BUFFER |
| void kgsl_get_egl_counts(struct kgsl_mem_entry *entry, |
| int *egl_surface_count, int *egl_image_count) |
| { |
| struct kgsl_dma_buf_meta *meta = entry->priv_data; |
| struct dma_buf *dmabuf = meta->dmabuf; |
| struct dma_buf_attachment *mem_entry_buf_attachment = meta->attach; |
| struct device *buf_attachment_dev = mem_entry_buf_attachment->dev; |
| struct dma_buf_attachment *attachment = NULL; |
| |
| mutex_lock(&dmabuf->lock); |
| list_for_each_entry(attachment, &dmabuf->attachments, node) { |
| struct kgsl_mem_entry *scan_mem_entry = NULL; |
| |
| if (attachment->dev != buf_attachment_dev) |
| continue; |
| |
| scan_mem_entry = attachment->priv; |
| if (!scan_mem_entry) |
| continue; |
| |
| switch (kgsl_memdesc_get_memtype(&scan_mem_entry->memdesc)) { |
| case KGSL_MEMTYPE_EGL_SURFACE: |
| (*egl_surface_count)++; |
| break; |
| case KGSL_MEMTYPE_EGL_IMAGE: |
| (*egl_image_count)++; |
| break; |
| } |
| } |
| mutex_unlock(&dmabuf->lock); |
| } |
| #else |
| void kgsl_get_egl_counts(struct kgsl_mem_entry *entry, |
| int *egl_surface_count, int *egl_image_count) |
| { |
| } |
| #endif |
| |
| long kgsl_ioctl_map_user_mem(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| int result = -EINVAL; |
| struct kgsl_map_user_mem *param = data; |
| struct kgsl_mem_entry *entry = NULL; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mmu *mmu = &dev_priv->device->mmu; |
| unsigned int memtype; |
| |
| /* |
| * If content protection is not enabled and secure buffer |
| * is requested to be mapped return error. |
| */ |
| |
| if (param->flags & KGSL_MEMFLAGS_SECURE) { |
| /* Log message and return if context protection isn't enabled */ |
| if (!kgsl_mmu_is_secured(mmu)) { |
| dev_WARN_ONCE(dev_priv->device->dev, 1, |
| "Secure buffer not supported"); |
| return -EOPNOTSUPP; |
| } |
| |
| /* Can't use CPU map with secure buffers */ |
| if (param->flags & KGSL_MEMFLAGS_USE_CPU_MAP) |
| return -EINVAL; |
| } |
| |
| entry = kgsl_mem_entry_create(); |
| |
| if (entry == NULL) |
| return -ENOMEM; |
| |
| /* |
| * Convert from enum value to KGSL_MEM_ENTRY value, so that |
| * we can use the latter consistently everywhere. |
| */ |
| memtype = param->memtype + 1; |
| |
| /* |
| * Mask off unknown flags from userspace. This way the caller can |
| * check if a flag is supported by looking at the returned flags. |
| * Note: CACHEMODE is ignored for this call. Caching should be |
| * determined by type of allocation being mapped. |
| */ |
| param->flags &= KGSL_MEMFLAGS_GPUREADONLY |
| | KGSL_MEMTYPE_MASK |
| | KGSL_MEMALIGN_MASK |
| | KGSL_MEMFLAGS_USE_CPU_MAP |
| | KGSL_MEMFLAGS_SECURE; |
| entry->memdesc.flags = ((uint64_t) param->flags) |
| | KGSL_MEMFLAGS_FORCE_32BIT; |
| |
| if (!kgsl_mmu_use_cpu_map(mmu)) |
| entry->memdesc.flags &= ~((uint64_t) KGSL_MEMFLAGS_USE_CPU_MAP); |
| |
| if (MMU_FEATURE(mmu, KGSL_MMU_NEED_GUARD_PAGE)) |
| entry->memdesc.priv |= KGSL_MEMDESC_GUARD_PAGE; |
| |
| if (param->flags & KGSL_MEMFLAGS_SECURE) |
| entry->memdesc.priv |= KGSL_MEMDESC_SECURE; |
| |
| switch (memtype) { |
| case KGSL_MEM_ENTRY_USER: |
| result = _map_usermem_addr(dev_priv->device, private->pagetable, |
| entry, param->hostptr, param->offset, param->len); |
| break; |
| case KGSL_MEM_ENTRY_ION: |
| if (param->offset != 0) |
| result = -EINVAL; |
| else |
| result = _map_usermem_dma_buf(dev_priv->device, |
| private->pagetable, entry, param->fd); |
| break; |
| default: |
| result = -EOPNOTSUPP; |
| break; |
| } |
| |
| if (result) |
| goto error; |
| |
| if ((param->flags & KGSL_MEMFLAGS_SECURE) && |
| (entry->memdesc.size & mmu->secure_align_mask)) { |
| result = -EINVAL; |
| goto error_attach; |
| } |
| |
| if (entry->memdesc.size >= SZ_2M) |
| kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_2M)); |
| else if (entry->memdesc.size >= SZ_1M) |
| kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_1M)); |
| else if (entry->memdesc.size >= SZ_64K) |
| kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_64)); |
| |
| /* echo back flags */ |
| param->flags = (unsigned int) entry->memdesc.flags; |
| |
| result = kgsl_mem_entry_attach_process(dev_priv->device, private, |
| entry); |
| if (result) |
| goto error_attach; |
| |
| /* Adjust the returned value for a non 4k aligned offset */ |
| param->gpuaddr = (unsigned long) |
| entry->memdesc.gpuaddr + (param->offset & PAGE_MASK); |
| |
| KGSL_STATS_ADD(param->len, &kgsl_driver.stats.mapped, |
| &kgsl_driver.stats.mapped_max); |
| |
| kgsl_process_add_stats(private, |
| kgsl_memdesc_usermem_type(&entry->memdesc), param->len); |
| |
| trace_kgsl_mem_map(entry, param->fd); |
| |
| kgsl_mem_entry_commit_process(entry); |
| return result; |
| |
| error_attach: |
| switch (memtype) { |
| case KGSL_MEM_ENTRY_ION: |
| kgsl_destroy_ion(entry->priv_data); |
| entry->memdesc.sgt = NULL; |
| break; |
| default: |
| break; |
| } |
| kgsl_sharedmem_free(&entry->memdesc); |
| error: |
| /* Clear gpuaddr here so userspace doesn't get any wrong ideas */ |
| param->gpuaddr = 0; |
| |
| kfree(entry); |
| return result; |
| } |
| |
| static int _kgsl_gpumem_sync_cache(struct kgsl_mem_entry *entry, |
| uint64_t offset, uint64_t length, unsigned int op) |
| { |
| int ret = 0; |
| int cacheop; |
| int mode; |
| |
| /* |
| * Flush is defined as (clean | invalidate). If both bits are set, then |
| * do a flush, otherwise check for the individual bits and clean or inv |
| * as requested |
| */ |
| |
| if ((op & KGSL_GPUMEM_CACHE_FLUSH) == KGSL_GPUMEM_CACHE_FLUSH) |
| cacheop = KGSL_CACHE_OP_FLUSH; |
| else if (op & KGSL_GPUMEM_CACHE_CLEAN) |
| cacheop = KGSL_CACHE_OP_CLEAN; |
| else if (op & KGSL_GPUMEM_CACHE_INV) |
| cacheop = KGSL_CACHE_OP_INV; |
| else { |
| ret = -EINVAL; |
| goto done; |
| } |
| |
| if (!(op & KGSL_GPUMEM_CACHE_RANGE)) { |
| offset = 0; |
| length = entry->memdesc.size; |
| } |
| |
| mode = kgsl_memdesc_get_cachemode(&entry->memdesc); |
| if (mode != KGSL_CACHEMODE_UNCACHED |
| && mode != KGSL_CACHEMODE_WRITECOMBINE) { |
| trace_kgsl_mem_sync_cache(entry, offset, length, op); |
| ret = kgsl_cache_range_op(&entry->memdesc, offset, |
| length, cacheop); |
| } |
| |
| done: |
| return ret; |
| } |
| |
| /* New cache sync function - supports both directions (clean and invalidate) */ |
| |
| long kgsl_ioctl_gpumem_sync_cache(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpumem_sync_cache *param = data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mem_entry *entry = NULL; |
| long ret; |
| |
| if (param->id != 0) |
| entry = kgsl_sharedmem_find_id(private, param->id); |
| else if (param->gpuaddr != 0) |
| entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| |
| if (entry == NULL) |
| return -EINVAL; |
| |
| ret = _kgsl_gpumem_sync_cache(entry, (uint64_t) param->offset, |
| (uint64_t) param->length, param->op); |
| kgsl_mem_entry_put(entry); |
| return ret; |
| } |
| |
| static int mem_id_cmp(const void *_a, const void *_b) |
| { |
| const unsigned int *a = _a, *b = _b; |
| |
| if (*a == *b) |
| return 0; |
| return (*a > *b) ? 1 : -1; |
| } |
| |
| #ifdef CONFIG_ARM64 |
| /* Do not support full flush on ARM64 targets */ |
| static inline bool check_full_flush(size_t size, int op) |
| { |
| return false; |
| } |
| #else |
| /* Support full flush if the size is bigger than the threshold */ |
| static inline bool check_full_flush(size_t size, int op) |
| { |
| /* If we exceed the breakeven point, flush the entire cache */ |
| bool ret = (kgsl_driver.full_cache_threshold != 0) && |
| (size >= kgsl_driver.full_cache_threshold) && |
| (op == KGSL_GPUMEM_CACHE_FLUSH); |
| if (ret) { |
| trace_kgsl_mem_sync_full_cache(actual_count, op_size); |
| flush_cache_all(); |
| } |
| return ret; |
| } |
| #endif |
| |
| long kgsl_ioctl_gpumem_sync_cache_bulk(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| int i; |
| struct kgsl_gpumem_sync_cache_bulk *param = data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| unsigned int id, last_id = 0, *id_list = NULL, actual_count = 0; |
| struct kgsl_mem_entry **entries = NULL; |
| long ret = 0; |
| uint64_t op_size = 0; |
| bool full_flush = false; |
| |
| if (param->id_list == NULL || param->count == 0 |
| || param->count > (PAGE_SIZE / sizeof(unsigned int))) |
| return -EINVAL; |
| |
| id_list = kcalloc(param->count, sizeof(unsigned int), GFP_KERNEL); |
| if (id_list == NULL) |
| return -ENOMEM; |
| |
| entries = kcalloc(param->count, sizeof(*entries), GFP_KERNEL); |
| if (entries == NULL) { |
| ret = -ENOMEM; |
| goto end; |
| } |
| |
| if (copy_from_user(id_list, param->id_list, |
| param->count * sizeof(unsigned int))) { |
| ret = -EFAULT; |
| goto end; |
| } |
| /* sort the ids so we can weed out duplicates */ |
| sort(id_list, param->count, sizeof(*id_list), mem_id_cmp, NULL); |
| |
| for (i = 0; i < param->count; i++) { |
| unsigned int cachemode; |
| struct kgsl_mem_entry *entry = NULL; |
| |
| id = id_list[i]; |
| /* skip 0 ids or duplicates */ |
| if (id == last_id) |
| continue; |
| |
| entry = kgsl_sharedmem_find_id(private, id); |
| if (entry == NULL) |
| continue; |
| |
| /* skip uncached memory */ |
| cachemode = kgsl_memdesc_get_cachemode(&entry->memdesc); |
| if (cachemode != KGSL_CACHEMODE_WRITETHROUGH && |
| cachemode != KGSL_CACHEMODE_WRITEBACK) { |
| kgsl_mem_entry_put(entry); |
| continue; |
| } |
| |
| op_size += entry->memdesc.size; |
| entries[actual_count++] = entry; |
| |
| full_flush = check_full_flush(op_size, param->op); |
| if (full_flush) |
| break; |
| |
| last_id = id; |
| } |
| |
| param->op &= ~KGSL_GPUMEM_CACHE_RANGE; |
| |
| for (i = 0; i < actual_count; i++) { |
| if (!full_flush) |
| _kgsl_gpumem_sync_cache(entries[i], 0, |
| entries[i]->memdesc.size, |
| param->op); |
| kgsl_mem_entry_put(entries[i]); |
| } |
| end: |
| kfree(entries); |
| kfree(id_list); |
| return ret; |
| } |
| |
| /* Legacy cache function, does a flush (clean + invalidate) */ |
| |
| long kgsl_ioctl_sharedmem_flush_cache(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_sharedmem_free *param = data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mem_entry *entry = NULL; |
| long ret; |
| |
| entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| ret = _kgsl_gpumem_sync_cache(entry, 0, entry->memdesc.size, |
| KGSL_GPUMEM_CACHE_FLUSH); |
| kgsl_mem_entry_put(entry); |
| return ret; |
| } |
| |
| long kgsl_ioctl_gpuobj_sync(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_gpuobj_sync *param = data; |
| struct kgsl_gpuobj_sync_obj *objs; |
| struct kgsl_mem_entry **entries; |
| long ret = 0; |
| bool full_flush = false; |
| uint64_t size = 0; |
| int i, count = 0; |
| void __user *ptr; |
| |
| if (param->count == 0 || param->count > 128) |
| return -EINVAL; |
| |
| objs = kcalloc(param->count, sizeof(*objs), GFP_KERNEL); |
| if (objs == NULL) |
| return -ENOMEM; |
| |
| entries = kcalloc(param->count, sizeof(*entries), GFP_KERNEL); |
| if (entries == NULL) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| ptr = to_user_ptr(param->objs); |
| |
| for (i = 0; i < param->count; i++) { |
| ret = _copy_from_user(&objs[i], ptr, sizeof(*objs), |
| param->obj_len); |
| if (ret) |
| goto out; |
| |
| entries[i] = kgsl_sharedmem_find_id(private, objs[i].id); |
| |
| /* Not finding the ID is not a fatal failure - just skip it */ |
| if (entries[i] == NULL) |
| continue; |
| |
| count++; |
| |
| if (!(objs[i].op & KGSL_GPUMEM_CACHE_RANGE)) |
| size += entries[i]->memdesc.size; |
| else if (objs[i].offset < entries[i]->memdesc.size) |
| size += (entries[i]->memdesc.size - objs[i].offset); |
| |
| full_flush = check_full_flush(size, objs[i].op); |
| if (full_flush) |
| break; |
| |
| ptr += sizeof(*objs); |
| } |
| |
| if (!full_flush) { |
| for (i = 0; !ret && i < param->count; i++) |
| if (entries[i]) |
| ret = _kgsl_gpumem_sync_cache(entries[i], |
| objs[i].offset, objs[i].length, |
| objs[i].op); |
| } |
| |
| for (i = 0; i < param->count; i++) |
| if (entries[i]) |
| kgsl_mem_entry_put(entries[i]); |
| |
| out: |
| kfree(entries); |
| kfree(objs); |
| |
| return ret; |
| } |
| |
| #ifdef CONFIG_ARM64 |
| static uint64_t kgsl_filter_cachemode(uint64_t flags) |
| { |
| /* |
| * WRITETHROUGH is not supported in arm64, so we tell the user that we |
| * use WRITEBACK which is the default caching policy. |
| */ |
| if ((flags & KGSL_CACHEMODE_MASK) >> KGSL_CACHEMODE_SHIFT == |
| KGSL_CACHEMODE_WRITETHROUGH) { |
| flags &= ~((uint64_t) KGSL_CACHEMODE_MASK); |
| flags |= (KGSL_CACHEMODE_WRITEBACK << KGSL_CACHEMODE_SHIFT) & |
| KGSL_CACHEMODE_MASK; |
| } |
| return flags; |
| } |
| #else |
| static uint64_t kgsl_filter_cachemode(uint64_t flags) |
| { |
| return flags; |
| } |
| #endif |
| |
| /* The largest allowable alignment for a GPU object is 32MB */ |
| #define KGSL_MAX_ALIGN (32 * SZ_1M) |
| |
| static struct kgsl_mem_entry *gpumem_alloc_entry( |
| struct kgsl_device_private *dev_priv, |
| uint64_t size, uint64_t flags) |
| { |
| int ret; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mem_entry *entry; |
| unsigned int align; |
| |
| flags &= KGSL_MEMFLAGS_GPUREADONLY |
| | KGSL_CACHEMODE_MASK |
| | KGSL_MEMTYPE_MASK |
| | KGSL_MEMALIGN_MASK |
| | KGSL_MEMFLAGS_USE_CPU_MAP |
| | KGSL_MEMFLAGS_SECURE |
| | KGSL_MEMFLAGS_FORCE_32BIT; |
| |
| /* Turn off SVM if the system doesn't support it */ |
| if (!kgsl_mmu_use_cpu_map(&dev_priv->device->mmu)) |
| flags &= ~((uint64_t) KGSL_MEMFLAGS_USE_CPU_MAP); |
| |
| /* Return not supported error if secure memory isn't enabled */ |
| if (!kgsl_mmu_is_secured(&dev_priv->device->mmu) && |
| (flags & KGSL_MEMFLAGS_SECURE)) { |
| dev_WARN_ONCE(dev_priv->device->dev, 1, |
| "Secure memory not supported"); |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| /* Secure memory disables advanced addressing modes */ |
| if (flags & KGSL_MEMFLAGS_SECURE) |
| flags &= ~((uint64_t) KGSL_MEMFLAGS_USE_CPU_MAP); |
| |
| /* Cap the alignment bits to the highest number we can handle */ |
| align = MEMFLAGS(flags, KGSL_MEMALIGN_MASK, KGSL_MEMALIGN_SHIFT); |
| if (align >= ilog2(KGSL_MAX_ALIGN)) { |
| KGSL_CORE_ERR("Alignment too large; restricting to %dK\n", |
| KGSL_MAX_ALIGN >> 10); |
| |
| flags &= ~((uint64_t) KGSL_MEMALIGN_MASK); |
| flags |= (ilog2(KGSL_MAX_ALIGN) << KGSL_MEMALIGN_SHIFT) & |
| KGSL_MEMALIGN_MASK; |
| } |
| |
| /* For now only allow allocations up to 4G */ |
| if (size == 0 || size > UINT_MAX) |
| return ERR_PTR(-EINVAL); |
| |
| flags = kgsl_filter_cachemode(flags); |
| |
| entry = kgsl_mem_entry_create(); |
| if (entry == NULL) |
| return ERR_PTR(-ENOMEM); |
| |
| if (MMU_FEATURE(&dev_priv->device->mmu, KGSL_MMU_NEED_GUARD_PAGE)) |
| entry->memdesc.priv |= KGSL_MEMDESC_GUARD_PAGE; |
| |
| if (flags & KGSL_MEMFLAGS_SECURE) |
| entry->memdesc.priv |= KGSL_MEMDESC_SECURE; |
| |
| ret = kgsl_allocate_user(dev_priv->device, &entry->memdesc, |
| size, flags); |
| if (ret != 0) |
| goto err; |
| |
| ret = kgsl_mem_entry_attach_process(dev_priv->device, private, entry); |
| if (ret != 0) { |
| kgsl_sharedmem_free(&entry->memdesc); |
| goto err; |
| } |
| |
| kgsl_process_add_stats(private, |
| kgsl_memdesc_usermem_type(&entry->memdesc), |
| entry->memdesc.size); |
| trace_kgsl_mem_alloc(entry); |
| |
| kgsl_mem_entry_commit_process(entry); |
| return entry; |
| err: |
| kfree(entry); |
| return ERR_PTR(ret); |
| } |
| |
| static void copy_metadata(struct kgsl_mem_entry *entry, uint64_t metadata, |
| unsigned int len) |
| { |
| unsigned int i, size; |
| |
| if (len == 0) |
| return; |
| |
| size = min_t(unsigned int, len, sizeof(entry->metadata) - 1); |
| |
| if (copy_from_user(entry->metadata, to_user_ptr(metadata), size)) { |
| memset(entry->metadata, 0, sizeof(entry->metadata)); |
| return; |
| } |
| |
| /* Clean up non printable characters in the string */ |
| for (i = 0; i < size && entry->metadata[i] != 0; i++) { |
| if (!isprint(entry->metadata[i])) |
| entry->metadata[i] = '?'; |
| } |
| } |
| |
| long kgsl_ioctl_gpuobj_alloc(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpuobj_alloc *param = data; |
| struct kgsl_mem_entry *entry; |
| |
| entry = gpumem_alloc_entry(dev_priv, param->size, param->flags); |
| |
| if (IS_ERR(entry)) |
| return PTR_ERR(entry); |
| |
| copy_metadata(entry, param->metadata, param->metadata_len); |
| |
| param->size = entry->memdesc.size; |
| param->flags = entry->memdesc.flags; |
| param->mmapsize = kgsl_memdesc_footprint(&entry->memdesc); |
| param->id = entry->id; |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_gpumem_alloc(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpumem_alloc *param = data; |
| struct kgsl_mem_entry *entry; |
| uint64_t flags = param->flags; |
| |
| /* Legacy functions doesn't support these advanced features */ |
| flags &= ~((uint64_t) KGSL_MEMFLAGS_USE_CPU_MAP); |
| flags |= KGSL_MEMFLAGS_FORCE_32BIT; |
| |
| entry = gpumem_alloc_entry(dev_priv, (uint64_t) param->size, flags); |
| |
| if (IS_ERR(entry)) |
| return PTR_ERR(entry); |
| |
| param->gpuaddr = (unsigned long) entry->memdesc.gpuaddr; |
| param->size = (size_t) entry->memdesc.size; |
| param->flags = (unsigned int) entry->memdesc.flags; |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_gpumem_alloc_id(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpumem_alloc_id *param = data; |
| struct kgsl_mem_entry *entry; |
| uint64_t flags = param->flags; |
| |
| flags |= KGSL_MEMFLAGS_FORCE_32BIT; |
| |
| entry = gpumem_alloc_entry(dev_priv, (uint64_t) param->size, flags); |
| |
| if (IS_ERR(entry)) |
| return PTR_ERR(entry); |
| |
| param->id = entry->id; |
| param->flags = (unsigned int) entry->memdesc.flags; |
| param->size = (size_t) entry->memdesc.size; |
| param->mmapsize = (size_t) kgsl_memdesc_footprint(&entry->memdesc); |
| param->gpuaddr = (unsigned long) entry->memdesc.gpuaddr; |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_gpumem_get_info(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_gpumem_get_info *param = data; |
| struct kgsl_mem_entry *entry = NULL; |
| int result = 0; |
| |
| if (param->id != 0) |
| entry = kgsl_sharedmem_find_id(private, param->id); |
| else if (param->gpuaddr != 0) |
| entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| |
| if (entry == NULL) |
| return -EINVAL; |
| |
| /* |
| * If any of the 64 bit address / sizes would end up being |
| * truncated, return -ERANGE. That will signal the user that they |
| * should use a more modern API |
| */ |
| if (entry->memdesc.gpuaddr > ULONG_MAX) |
| result = -ERANGE; |
| |
| param->gpuaddr = (unsigned long) entry->memdesc.gpuaddr; |
| param->id = entry->id; |
| param->flags = (unsigned int) entry->memdesc.flags; |
| param->size = (size_t) entry->memdesc.size; |
| param->mmapsize = (size_t) kgsl_memdesc_footprint(&entry->memdesc); |
| param->useraddr = entry->memdesc.useraddr; |
| |
| kgsl_mem_entry_put(entry); |
| return result; |
| } |
| |
| static inline int _sparse_alloc_param_sanity_check(uint64_t size, |
| uint64_t pagesize) |
| { |
| if (size == 0 || pagesize == 0) |
| return -EINVAL; |
| |
| if (pagesize != PAGE_SIZE && pagesize != SZ_64K) |
| return -EINVAL; |
| |
| if (pagesize > size || !IS_ALIGNED(size, pagesize)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_sparse_phys_alloc(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *process = dev_priv->process_priv; |
| struct kgsl_sparse_phys_alloc *param = data; |
| struct kgsl_mem_entry *entry; |
| int ret; |
| int id; |
| |
| ret = _sparse_alloc_param_sanity_check(param->size, param->pagesize); |
| if (ret) |
| return ret; |
| |
| entry = kgsl_mem_entry_create(); |
| if (entry == NULL) |
| return -ENOMEM; |
| |
| ret = kgsl_process_private_get(process); |
| if (!ret) { |
| ret = -EBADF; |
| goto err_free_entry; |
| } |
| |
| idr_preload(GFP_KERNEL); |
| spin_lock(&process->mem_lock); |
| /* Allocate the ID but don't attach the pointer just yet */ |
| id = idr_alloc(&process->mem_idr, NULL, 1, 0, GFP_NOWAIT); |
| spin_unlock(&process->mem_lock); |
| idr_preload_end(); |
| |
| if (id < 0) { |
| ret = id; |
| goto err_put_proc_priv; |
| } |
| |
| entry->id = id; |
| entry->priv = process; |
| |
| entry->memdesc.flags = KGSL_MEMFLAGS_SPARSE_PHYS; |
| kgsl_memdesc_set_align(&entry->memdesc, ilog2(param->pagesize)); |
| |
| ret = kgsl_allocate_user(dev_priv->device, &entry->memdesc, |
| param->size, entry->memdesc.flags); |
| if (ret) |
| goto err_remove_idr; |
| |
| /* Sanity check to verify we got correct pagesize */ |
| if (param->pagesize != PAGE_SIZE && entry->memdesc.sgt != NULL) { |
| struct scatterlist *s; |
| int i; |
| |
| for_each_sg(entry->memdesc.sgt->sgl, s, |
| entry->memdesc.sgt->nents, i) { |
| if (!IS_ALIGNED(s->length, param->pagesize)) |
| goto err_invalid_pages; |
| } |
| } |
| |
| param->id = entry->id; |
| param->flags = entry->memdesc.flags; |
| |
| trace_sparse_phys_alloc(entry->id, param->size, param->pagesize); |
| kgsl_mem_entry_commit_process(entry); |
| |
| return 0; |
| |
| err_invalid_pages: |
| kgsl_sharedmem_free(&entry->memdesc); |
| err_remove_idr: |
| spin_lock(&process->mem_lock); |
| idr_remove(&process->mem_idr, entry->id); |
| spin_unlock(&process->mem_lock); |
| err_put_proc_priv: |
| kgsl_process_private_put(process); |
| err_free_entry: |
| kfree(entry); |
| |
| return ret; |
| } |
| |
| long kgsl_ioctl_sparse_phys_free(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *process = dev_priv->process_priv; |
| struct kgsl_sparse_phys_free *param = data; |
| struct kgsl_mem_entry *entry; |
| |
| entry = kgsl_sharedmem_find_id_flags(process, param->id, |
| KGSL_MEMFLAGS_SPARSE_PHYS); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| if (entry->memdesc.cur_bindings != 0) { |
| kgsl_mem_entry_put(entry); |
| return -EINVAL; |
| } |
| |
| trace_sparse_phys_free(entry->id); |
| |
| /* One put for find_id(), one put for the kgsl_mem_entry_create() */ |
| kgsl_mem_entry_put(entry); |
| kgsl_mem_entry_put(entry); |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_sparse_virt_alloc(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_sparse_virt_alloc *param = data; |
| struct kgsl_mem_entry *entry; |
| int ret; |
| |
| ret = _sparse_alloc_param_sanity_check(param->size, param->pagesize); |
| if (ret) |
| return ret; |
| |
| entry = kgsl_mem_entry_create(); |
| if (entry == NULL) |
| return -ENOMEM; |
| |
| entry->memdesc.flags = KGSL_MEMFLAGS_SPARSE_VIRT; |
| entry->memdesc.size = param->size; |
| entry->memdesc.cur_bindings = 0; |
| kgsl_memdesc_set_align(&entry->memdesc, ilog2(param->pagesize)); |
| |
| spin_lock_init(&entry->bind_lock); |
| entry->bind_tree = RB_ROOT; |
| |
| ret = kgsl_mem_entry_attach_process(dev_priv->device, private, entry); |
| if (ret) { |
| kfree(entry); |
| return ret; |
| } |
| |
| param->id = entry->id; |
| param->gpuaddr = entry->memdesc.gpuaddr; |
| param->flags = entry->memdesc.flags; |
| |
| trace_sparse_virt_alloc(entry->id, param->size, param->pagesize); |
| kgsl_mem_entry_commit_process(entry); |
| |
| return 0; |
| } |
| |
| long kgsl_ioctl_sparse_virt_free(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *process = dev_priv->process_priv; |
| struct kgsl_sparse_virt_free *param = data; |
| struct kgsl_mem_entry *entry = NULL; |
| |
| entry = kgsl_sharedmem_find_id_flags(process, param->id, |
| KGSL_MEMFLAGS_SPARSE_VIRT); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| if (entry->bind_tree.rb_node != NULL) { |
| kgsl_mem_entry_put(entry); |
| return -EINVAL; |
| } |
| |
| trace_sparse_virt_free(entry->id); |
| |
| /* One put for find_id(), one put for the kgsl_mem_entry_create() */ |
| kgsl_mem_entry_put(entry); |
| kgsl_mem_entry_put(entry); |
| |
| return 0; |
| } |
| |
| static int _sparse_add_to_bind_tree(struct kgsl_mem_entry *entry, |
| uint64_t v_offset, |
| struct kgsl_memdesc *memdesc, |
| uint64_t p_offset, |
| uint64_t size, |
| uint64_t flags) |
| { |
| struct sparse_bind_object *new; |
| struct rb_node **node, *parent = NULL; |
| |
| new = kzalloc(sizeof(*new), GFP_KERNEL); |
| if (new == NULL) |
| return -ENOMEM; |
| |
| new->v_off = v_offset; |
| new->p_off = p_offset; |
| new->p_memdesc = memdesc; |
| new->size = size; |
| new->flags = flags; |
| |
| node = &entry->bind_tree.rb_node; |
| |
| while (*node != NULL) { |
| struct sparse_bind_object *this; |
| |
| parent = *node; |
| this = rb_entry(parent, struct sparse_bind_object, node); |
| |
| if (new->v_off < this->v_off) |
| node = &parent->rb_left; |
| else if (new->v_off > this->v_off) |
| node = &parent->rb_right; |
| } |
| |
| rb_link_node(&new->node, parent, node); |
| rb_insert_color(&new->node, &entry->bind_tree); |
| |
| return 0; |
| } |
| |
| static int _sparse_rm_from_bind_tree(struct kgsl_mem_entry *entry, |
| struct sparse_bind_object *obj, |
| uint64_t v_offset, uint64_t size) |
| { |
| spin_lock(&entry->bind_lock); |
| if (v_offset == obj->v_off && size >= obj->size) { |
| /* |
| * We are all encompassing, remove the entry and free |
| * things up |
| */ |
| rb_erase(&obj->node, &entry->bind_tree); |
| kfree(obj); |
| } else if (v_offset == obj->v_off) { |
| /* |
| * We are the front of the node, adjust the front of |
| * the node |
| */ |
| obj->v_off += size; |
| obj->p_off += size; |
| obj->size -= size; |
| } else if ((v_offset + size) == (obj->v_off + obj->size)) { |
| /* |
| * We are at the end of the obj, adjust the beginning |
| * points |
| */ |
| obj->size -= size; |
| } else { |
| /* |
| * We are in the middle of a node, split it up and |
| * create a new mini node. Adjust this node's bounds |
| * and add the new node to the list. |
| */ |
| uint64_t tmp_size = obj->size; |
| int ret; |
| |
| obj->size = v_offset - obj->v_off; |
| |
| spin_unlock(&entry->bind_lock); |
| ret = _sparse_add_to_bind_tree(entry, v_offset + size, |
| obj->p_memdesc, |
| obj->p_off + (v_offset - obj->v_off) + size, |
| tmp_size - (v_offset - obj->v_off) - size, |
| obj->flags); |
| |
| return ret; |
| } |
| |
| spin_unlock(&entry->bind_lock); |
| |
| return 0; |
| } |
| |
| static struct sparse_bind_object *_find_containing_bind_obj( |
| struct kgsl_mem_entry *entry, |
| uint64_t offset, uint64_t size) |
| { |
| struct sparse_bind_object *obj = NULL; |
| struct rb_node *node = entry->bind_tree.rb_node; |
| |
| spin_lock(&entry->bind_lock); |
| |
| while (node != NULL) { |
| obj = rb_entry(node, struct sparse_bind_object, node); |
| |
| if (offset == obj->v_off) { |
| break; |
| } else if (offset < obj->v_off) { |
| if (offset + size > obj->v_off) |
| break; |
| node = node->rb_left; |
| obj = NULL; |
| } else if (offset > obj->v_off) { |
| if (offset < obj->v_off + obj->size) |
| break; |
| node = node->rb_right; |
| obj = NULL; |
| } |
| } |
| |
| spin_unlock(&entry->bind_lock); |
| |
| return obj; |
| } |
| |
| static int _sparse_unbind(struct kgsl_mem_entry *entry, |
| struct sparse_bind_object *bind_obj, |
| uint64_t offset, uint64_t size) |
| { |
| struct kgsl_memdesc *memdesc = bind_obj->p_memdesc; |
| struct kgsl_pagetable *pt = memdesc->pagetable; |
| int ret; |
| |
| if (memdesc->cur_bindings < (size / PAGE_SIZE)) |
| return -EINVAL; |
| |
| memdesc->cur_bindings -= size / PAGE_SIZE; |
| |
| ret = kgsl_mmu_unmap_offset(pt, memdesc, |
| entry->memdesc.gpuaddr, offset, size); |
| if (ret) |
| return ret; |
| |
| ret = kgsl_mmu_sparse_dummy_map(pt, &entry->memdesc, offset, size); |
| if (ret) |
| return ret; |
| |
| ret = _sparse_rm_from_bind_tree(entry, bind_obj, offset, size); |
| if (ret == 0) { |
| atomic_long_sub(size, &kgsl_driver.stats.mapped); |
| trace_sparse_unbind(entry->id, offset, size); |
| } |
| |
| return ret; |
| } |
| |
| static long sparse_unbind_range(struct kgsl_sparse_binding_object *obj, |
| struct kgsl_mem_entry *virt_entry) |
| { |
| struct sparse_bind_object *bind_obj; |
| int ret = 0; |
| uint64_t size = obj->size; |
| uint64_t tmp_size = obj->size; |
| uint64_t offset = obj->virtoffset; |
| |
| while (size > 0 && ret == 0) { |
| tmp_size = size; |
| bind_obj = _find_containing_bind_obj(virt_entry, offset, size); |
| if (bind_obj == NULL) |
| return 0; |
| |
| if (bind_obj->v_off > offset) { |
| tmp_size = size - bind_obj->v_off - offset; |
| if (tmp_size > bind_obj->size) |
| tmp_size = bind_obj->size; |
| offset = bind_obj->v_off; |
| } else if (bind_obj->v_off < offset) { |
| uint64_t diff = offset - bind_obj->v_off; |
| |
| if (diff + size > bind_obj->size) |
| tmp_size = bind_obj->size - diff; |
| } else { |
| if (tmp_size > bind_obj->size) |
| tmp_size = bind_obj->size; |
| } |
| |
| ret = _sparse_unbind(virt_entry, bind_obj, offset, tmp_size); |
| if (ret == 0) { |
| offset += tmp_size; |
| size -= tmp_size; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static inline bool _is_phys_bindable(struct kgsl_mem_entry *phys_entry, |
| uint64_t offset, uint64_t size, uint64_t flags) |
| { |
| struct kgsl_memdesc *memdesc = &phys_entry->memdesc; |
| |
| if (!IS_ALIGNED(offset | size, kgsl_memdesc_get_pagesize(memdesc))) |
| return false; |
| |
| if (offset + size < offset) |
| return false; |
| |
| if (!(flags & KGSL_SPARSE_BIND_MULTIPLE_TO_PHYS) && |
| offset + size > memdesc->size) |
| return false; |
| |
| return true; |
| } |
| |
| static int _sparse_bind(struct kgsl_process_private *process, |
| struct kgsl_mem_entry *virt_entry, uint64_t v_offset, |
| struct kgsl_mem_entry *phys_entry, uint64_t p_offset, |
| uint64_t size, uint64_t flags) |
| { |
| int ret; |
| struct kgsl_pagetable *pagetable; |
| struct kgsl_memdesc *memdesc = &phys_entry->memdesc; |
| |
| /* map the memory after unlocking if gpuaddr has been assigned */ |
| if (memdesc->gpuaddr) |
| return -EINVAL; |
| |
| if (memdesc->useraddr != 0) |
| return -EINVAL; |
| |
| pagetable = memdesc->pagetable; |
| |
| /* Clear out any mappings */ |
| ret = kgsl_mmu_unmap_offset(pagetable, &virt_entry->memdesc, |
| virt_entry->memdesc.gpuaddr, v_offset, size); |
| if (ret) |
| return ret; |
| |
| ret = kgsl_mmu_map_offset(pagetable, virt_entry->memdesc.gpuaddr, |
| v_offset, memdesc, p_offset, size, flags); |
| if (ret) { |
| /* Try to clean up, but not the end of the world */ |
| kgsl_mmu_sparse_dummy_map(pagetable, &virt_entry->memdesc, |
| v_offset, size); |
| return ret; |
| } |
| |
| ret = _sparse_add_to_bind_tree(virt_entry, v_offset, memdesc, |
| p_offset, size, flags); |
| if (ret == 0) |
| memdesc->cur_bindings += size / PAGE_SIZE; |
| |
| return ret; |
| } |
| |
| static long sparse_bind_range(struct kgsl_process_private *private, |
| struct kgsl_sparse_binding_object *obj, |
| struct kgsl_mem_entry *virt_entry) |
| { |
| struct kgsl_mem_entry *phys_entry; |
| int ret; |
| |
| phys_entry = kgsl_sharedmem_find_id_flags(private, obj->id, |
| KGSL_MEMFLAGS_SPARSE_PHYS); |
| if (phys_entry == NULL) |
| return -EINVAL; |
| |
| if (!_is_phys_bindable(phys_entry, obj->physoffset, obj->size, |
| obj->flags)) { |
| kgsl_mem_entry_put(phys_entry); |
| return -EINVAL; |
| } |
| |
| if (kgsl_memdesc_get_align(&virt_entry->memdesc) != |
| kgsl_memdesc_get_align(&phys_entry->memdesc)) { |
| kgsl_mem_entry_put(phys_entry); |
| return -EINVAL; |
| } |
| |
| ret = sparse_unbind_range(obj, virt_entry); |
| if (ret) { |
| kgsl_mem_entry_put(phys_entry); |
| return -EINVAL; |
| } |
| |
| ret = _sparse_bind(private, virt_entry, obj->virtoffset, |
| phys_entry, obj->physoffset, obj->size, |
| obj->flags & KGSL_SPARSE_BIND_MULTIPLE_TO_PHYS); |
| if (ret == 0) { |
| KGSL_STATS_ADD(obj->size, &kgsl_driver.stats.mapped, |
| &kgsl_driver.stats.mapped_max); |
| |
| trace_sparse_bind(virt_entry->id, obj->virtoffset, |
| phys_entry->id, obj->physoffset, |
| obj->size, obj->flags); |
| } |
| |
| kgsl_mem_entry_put(phys_entry); |
| |
| return ret; |
| } |
| |
| long kgsl_ioctl_sparse_bind(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_sparse_bind *param = data; |
| struct kgsl_sparse_binding_object obj; |
| struct kgsl_mem_entry *virt_entry; |
| int pg_sz; |
| void __user *ptr; |
| int ret = 0; |
| int i = 0; |
| |
| ptr = (void __user *) (uintptr_t) param->list; |
| |
| if (param->size > sizeof(struct kgsl_sparse_binding_object) || |
| param->count == 0 || ptr == NULL) |
| return -EINVAL; |
| |
| virt_entry = kgsl_sharedmem_find_id_flags(private, param->id, |
| KGSL_MEMFLAGS_SPARSE_VIRT); |
| if (virt_entry == NULL) |
| return -EINVAL; |
| |
| pg_sz = kgsl_memdesc_get_pagesize(&virt_entry->memdesc); |
| |
| for (i = 0; i < param->count; i++) { |
| memset(&obj, 0, sizeof(obj)); |
| ret = _copy_from_user(&obj, ptr, sizeof(obj), param->size); |
| if (ret) |
| break; |
| |
| /* Sanity check initial range */ |
| if (obj.size == 0 || obj.virtoffset + obj.size < obj.size || |
| obj.virtoffset + obj.size > virt_entry->memdesc.size || |
| !(IS_ALIGNED(obj.virtoffset | obj.size, pg_sz))) { |
| ret = -EINVAL; |
| break; |
| } |
| |
| if (obj.flags & KGSL_SPARSE_BIND) |
| ret = sparse_bind_range(private, &obj, virt_entry); |
| else if (obj.flags & KGSL_SPARSE_UNBIND) |
| ret = sparse_unbind_range(&obj, virt_entry); |
| else |
| ret = -EINVAL; |
| if (ret) |
| break; |
| |
| ptr += sizeof(obj); |
| } |
| |
| kgsl_mem_entry_put(virt_entry); |
| |
| return ret; |
| } |
| |
| long kgsl_ioctl_gpu_sparse_command(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_gpu_sparse_command *param = data; |
| struct kgsl_device *device = dev_priv->device; |
| struct kgsl_context *context; |
| struct kgsl_drawobj *drawobj[2]; |
| struct kgsl_drawobj_sparse *sparseobj; |
| long result; |
| unsigned int i = 0; |
| |
| /* Make sure sparse and syncpoint count isn't too big */ |
| if (param->numsparse > KGSL_MAX_SPARSE || |
| param->numsyncs > KGSL_MAX_SYNCPOINTS) |
| return -EINVAL; |
| |
| /* Make sure there is atleast one sparse or sync */ |
| if (param->numsparse == 0 && param->numsyncs == 0) |
| return -EINVAL; |
| |
| /* Only Sparse commands are supported in this ioctl */ |
| if (!(param->flags & KGSL_DRAWOBJ_SPARSE) || (param->flags & |
| (KGSL_DRAWOBJ_SUBMIT_IB_LIST | KGSL_DRAWOBJ_MARKER |
| | KGSL_DRAWOBJ_SYNC))) |
| return -EINVAL; |
| |
| context = kgsl_context_get_owner(dev_priv, param->context_id); |
| if (context == NULL) |
| return -EINVAL; |
| |
| /* Restrict bind commands to bind context */ |
| if (!(context->flags & KGSL_CONTEXT_SPARSE)) { |
| kgsl_context_put(context); |
| return -EINVAL; |
| } |
| |
| if (param->numsyncs) { |
| struct kgsl_drawobj_sync *syncobj = kgsl_drawobj_sync_create( |
| device, context); |
| if (IS_ERR(syncobj)) { |
| result = PTR_ERR(syncobj); |
| goto done; |
| } |
| |
| drawobj[i++] = DRAWOBJ(syncobj); |
| result = kgsl_drawobj_sync_add_synclist(device, syncobj, |
| to_user_ptr(param->synclist), |
| param->syncsize, param->numsyncs); |
| if (result) |
| goto done; |
| } |
| |
| if (param->numsparse) { |
| sparseobj = kgsl_drawobj_sparse_create(device, context, |
| param->flags); |
| if (IS_ERR(sparseobj)) { |
| result = PTR_ERR(sparseobj); |
| goto done; |
| } |
| |
| sparseobj->id = param->id; |
| drawobj[i++] = DRAWOBJ(sparseobj); |
| result = kgsl_drawobj_sparse_add_sparselist(device, sparseobj, |
| param->id, to_user_ptr(param->sparselist), |
| param->sparsesize, param->numsparse); |
| if (result) |
| goto done; |
| } |
| |
| result = dev_priv->device->ftbl->queue_cmds(dev_priv, context, |
| drawobj, i, ¶m->timestamp); |
| |
| done: |
| /* |
| * -EPROTO is a "success" error - it just tells the user that the |
| * context had previously faulted |
| */ |
| if (result && result != -EPROTO) |
| while (i--) |
| kgsl_drawobj_destroy(drawobj[i]); |
| |
| kgsl_context_put(context); |
| return result; |
| } |
| |
| void kgsl_sparse_bind(struct kgsl_process_private *private, |
| struct kgsl_drawobj_sparse *sparseobj) |
| { |
| struct kgsl_sparseobj_node *sparse_node; |
| struct kgsl_mem_entry *virt_entry = NULL; |
| long ret = 0; |
| char *name; |
| |
| virt_entry = kgsl_sharedmem_find_id_flags(private, sparseobj->id, |
| KGSL_MEMFLAGS_SPARSE_VIRT); |
| if (virt_entry == NULL) |
| return; |
| |
| list_for_each_entry(sparse_node, &sparseobj->sparselist, node) { |
| if (sparse_node->obj.flags & KGSL_SPARSE_BIND) { |
| ret = sparse_bind_range(private, &sparse_node->obj, |
| virt_entry); |
| name = "bind"; |
| } else { |
| ret = sparse_unbind_range(&sparse_node->obj, |
| virt_entry); |
| name = "unbind"; |
| } |
| |
| if (ret) |
| KGSL_CORE_ERR("kgsl: Unable to '%s' ret %ld virt_id %d, phys_id %d, virt_offset %16.16llX, phys_offset %16.16llX, size %16.16llX, flags %16.16llX\n", |
| name, ret, sparse_node->virt_id, |
| sparse_node->obj.id, |
| sparse_node->obj.virtoffset, |
| sparse_node->obj.physoffset, |
| sparse_node->obj.size, sparse_node->obj.flags); |
| } |
| |
| kgsl_mem_entry_put(virt_entry); |
| } |
| EXPORT_SYMBOL(kgsl_sparse_bind); |
| |
| long kgsl_ioctl_gpuobj_info(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_gpuobj_info *param = data; |
| struct kgsl_mem_entry *entry; |
| |
| if (param->id == 0) |
| return -EINVAL; |
| |
| entry = kgsl_sharedmem_find_id(private, param->id); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| param->id = entry->id; |
| param->gpuaddr = entry->memdesc.gpuaddr; |
| param->flags = entry->memdesc.flags; |
| param->size = entry->memdesc.size; |
| param->va_len = kgsl_memdesc_footprint(&entry->memdesc); |
| param->va_addr = (uint64_t) entry->memdesc.useraddr; |
| |
| kgsl_mem_entry_put(entry); |
| return 0; |
| } |
| |
| long kgsl_ioctl_gpuobj_set_info(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_gpuobj_set_info *param = data; |
| struct kgsl_mem_entry *entry; |
| |
| if (param->id == 0) |
| return -EINVAL; |
| |
| entry = kgsl_sharedmem_find_id(private, param->id); |
| if (entry == NULL) |
| return -EINVAL; |
| |
| if (param->flags & KGSL_GPUOBJ_SET_INFO_METADATA) |
| copy_metadata(entry, param->metadata, param->metadata_len); |
| |
| if (param->flags & KGSL_GPUOBJ_SET_INFO_TYPE) { |
| entry->memdesc.flags &= ~((uint64_t) KGSL_MEMTYPE_MASK); |
| entry->memdesc.flags |= param->type << KGSL_MEMTYPE_SHIFT; |
| } |
| |
| kgsl_mem_entry_put(entry); |
| return 0; |
| } |
| |
| /** |
| * kgsl_ioctl_timestamp_event - Register a new timestamp event from userspace |
| * @dev_priv - pointer to the private device structure |
| * @cmd - the ioctl cmd passed from kgsl_ioctl |
| * @data - the user data buffer from kgsl_ioctl |
| * @returns 0 on success or error code on failure |
| */ |
| |
| long kgsl_ioctl_timestamp_event(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_timestamp_event *param = data; |
| int ret; |
| |
| switch (param->type) { |
| case KGSL_TIMESTAMP_EVENT_FENCE: |
| ret = kgsl_add_fence_event(dev_priv->device, |
| param->context_id, param->timestamp, param->priv, |
| param->len, dev_priv); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int |
| kgsl_mmap_memstore(struct kgsl_device *device, struct vm_area_struct *vma) |
| { |
| struct kgsl_memdesc *memdesc = &device->memstore; |
| int result; |
| unsigned int vma_size = vma->vm_end - vma->vm_start; |
| |
| /* The memstore can only be mapped as read only */ |
| |
| if (vma->vm_flags & VM_WRITE) |
| return -EPERM; |
| |
| if (memdesc->size != vma_size) { |
| KGSL_MEM_ERR(device, "memstore bad size: %d should be %llu\n", |
| vma_size, memdesc->size); |
| return -EINVAL; |
| } |
| |
| vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
| |
| result = remap_pfn_range(vma, vma->vm_start, |
| device->memstore.physaddr >> PAGE_SHIFT, |
| vma_size, vma->vm_page_prot); |
| if (result != 0) |
| KGSL_MEM_ERR(device, "remap_pfn_range failed: %d\n", |
| result); |
| |
| return result; |
| } |
| |
| /* |
| * kgsl_gpumem_vm_open is called whenever a vma region is copied or split. |
| * Increase the refcount to make sure that the accounting stays correct |
| */ |
| |
| static void kgsl_gpumem_vm_open(struct vm_area_struct *vma) |
| { |
| struct kgsl_mem_entry *entry = vma->vm_private_data; |
| |
| if (kgsl_mem_entry_get(entry) == 0) |
| vma->vm_private_data = NULL; |
| } |
| |
| static int |
| kgsl_gpumem_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| { |
| struct kgsl_mem_entry *entry = vma->vm_private_data; |
| |
| if (!entry) |
| return VM_FAULT_SIGBUS; |
| if (!entry->memdesc.ops || !entry->memdesc.ops->vmfault) |
| return VM_FAULT_SIGBUS; |
| |
| return entry->memdesc.ops->vmfault(&entry->memdesc, vma, vmf); |
| } |
| |
| static void |
| kgsl_gpumem_vm_close(struct vm_area_struct *vma) |
| { |
| struct kgsl_mem_entry *entry = vma->vm_private_data; |
| |
| if (!entry) |
| return; |
| |
| entry->memdesc.useraddr = 0; |
| kgsl_mem_entry_put(entry); |
| } |
| |
| static const struct vm_operations_struct kgsl_gpumem_vm_ops = { |
| .open = kgsl_gpumem_vm_open, |
| .fault = kgsl_gpumem_vm_fault, |
| .close = kgsl_gpumem_vm_close, |
| }; |
| |
| static int |
| get_mmap_entry(struct kgsl_process_private *private, |
| struct kgsl_mem_entry **out_entry, unsigned long pgoff, |
| unsigned long len) |
| { |
| int ret = 0; |
| struct kgsl_mem_entry *entry; |
| |
| entry = kgsl_sharedmem_find_id(private, pgoff); |
| if (entry == NULL) |
| entry = kgsl_sharedmem_find(private, pgoff << PAGE_SHIFT); |
| |
| if (!entry) |
| return -EINVAL; |
| |
| if (!entry->memdesc.ops || |
| !entry->memdesc.ops->vmflags || |
| !entry->memdesc.ops->vmfault) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| if (entry->memdesc.flags & KGSL_MEMFLAGS_SPARSE_PHYS) { |
| if (len != entry->memdesc.size) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| } |
| |
| if (entry->memdesc.useraddr != 0) { |
| ret = -EBUSY; |
| goto err_put; |
| } |
| |
| if (kgsl_memdesc_use_cpu_map(&entry->memdesc)) { |
| if (len != kgsl_memdesc_footprint(&entry->memdesc)) { |
| ret = -ERANGE; |
| goto err_put; |
| } |
| } else if (len != kgsl_memdesc_footprint(&entry->memdesc) && |
| len != entry->memdesc.size) { |
| /* |
| * If cpu_map != gpumap then user can map either the |
| * footprint or the entry size |
| */ |
| ret = -ERANGE; |
| goto err_put; |
| } |
| |
| *out_entry = entry; |
| return 0; |
| err_put: |
| kgsl_mem_entry_put(entry); |
| return ret; |
| } |
| |
| static unsigned long _gpu_set_svm_region(struct kgsl_process_private *private, |
| struct kgsl_mem_entry *entry, unsigned long addr, |
| unsigned long size) |
| { |
| int ret; |
| |
| ret = kgsl_mmu_set_svm_region(private->pagetable, (uint64_t) addr, |
| (uint64_t) size); |
| |
| if (ret != 0) |
| return ret; |
| |
| entry->memdesc.gpuaddr = (uint64_t) addr; |
| entry->memdesc.pagetable = private->pagetable; |
| |
| ret = kgsl_mmu_map(private->pagetable, &entry->memdesc); |
| if (ret) { |
| kgsl_mmu_put_gpuaddr(&entry->memdesc); |
| return ret; |
| } |
| |
| kgsl_memfree_purge(private->pagetable, entry->memdesc.gpuaddr, |
| entry->memdesc.size); |
| |
| return addr; |
| } |
| |
| static unsigned long _gpu_find_svm(struct kgsl_process_private *private, |
| unsigned long start, unsigned long end, unsigned long len, |
| unsigned int align) |
| { |
| uint64_t addr = kgsl_mmu_find_svm_region(private->pagetable, |
| (uint64_t) start, (uint64_t)end, (uint64_t) len, align); |
| |
| BUG_ON(!IS_ERR_VALUE((unsigned long)addr) && (addr > ULONG_MAX)); |
| |
| return (unsigned long) addr; |
| } |
| |
| /* Search top down in the CPU VM region for a free address */ |
| static unsigned long _cpu_get_unmapped_area(unsigned long bottom, |
| unsigned long top, unsigned long len, unsigned long align) |
| { |
| struct vm_unmapped_area_info info; |
| unsigned long addr, err; |
| |
| info.flags = VM_UNMAPPED_AREA_TOPDOWN; |
| info.low_limit = bottom; |
| info.high_limit = top; |
| info.length = len; |
| info.align_offset = 0; |
| info.align_mask = align - 1; |
| |
| addr = vm_unmapped_area(&info); |
| |
| if (IS_ERR_VALUE(addr)) |
| return addr; |
| |
| err = security_mmap_addr(addr); |
| return err ? err : addr; |
| } |
| |
| static unsigned long _search_range(struct kgsl_process_private *private, |
| struct kgsl_mem_entry *entry, |
| unsigned long start, unsigned long end, |
| unsigned long len, uint64_t align) |
| { |
| unsigned long cpu, gpu = end, result = -ENOMEM; |
| |
| while (gpu > start) { |
| /* find a new empty spot on the CPU below the last one */ |
| cpu = _cpu_get_unmapped_area(start, gpu, len, |
| (unsigned long) align); |
| if (IS_ERR_VALUE(cpu)) { |
| result = cpu; |
| break; |
| } |
| /* try to map it on the GPU */ |
| result = _gpu_set_svm_region(private, entry, cpu, len); |
| if (!IS_ERR_VALUE(result)) |
| break; |
| |
| trace_kgsl_mem_unmapped_area_collision(entry, cpu, len); |
| |
| if (cpu <= start) { |
| result = -ENOMEM; |
| break; |
| } |
| |
| /* move downward to the next empty spot on the GPU */ |
| gpu = _gpu_find_svm(private, start, cpu, len, align); |
| if (IS_ERR_VALUE(gpu)) { |
| result = gpu; |
| break; |
| } |
| |
| /* Check that_gpu_find_svm doesn't put us in a loop */ |
| if (gpu >= cpu) { |
| result = -ENOMEM; |
| break; |
| } |
| |
| /* Break if the recommended GPU address is out of range */ |
| if (gpu < start) { |
| result = -ENOMEM; |
| break; |
| } |
| |
| /* |
| * Add the length of the chunk to the GPU address to yield the |
| * upper bound for the CPU search |
| */ |
| gpu += len; |
| } |
| return result; |
| } |
| |
| static unsigned long _get_svm_area(struct kgsl_process_private *private, |
| struct kgsl_mem_entry *entry, unsigned long hint, |
| unsigned long len, unsigned long flags) |
| { |
| uint64_t start, end; |
| int align_shift = kgsl_memdesc_get_align(&entry->memdesc); |
| uint64_t align; |
| unsigned long result; |
| unsigned long addr; |
| |
| if (align_shift >= ilog2(SZ_2M)) |
| align = SZ_2M; |
| else if (align_shift >= ilog2(SZ_1M)) |
| align = SZ_1M; |
| else if (align_shift >= ilog2(SZ_64K)) |
| align = SZ_64K; |
| else |
| align = SZ_4K; |
| |
| /* get the GPU pagetable's SVM range */ |
| if (kgsl_mmu_svm_range(private->pagetable, &start, &end, |
| entry->memdesc.flags)) |
| return -ERANGE; |
| |
| /* now clamp the range based on the CPU's requirements */ |
| start = max_t(uint64_t, start, mmap_min_addr); |
| end = min_t(uint64_t, end, current->mm->mmap_base); |
| if (start >= end) |
| return -ERANGE; |
| |
| if (flags & MAP_FIXED) { |
| /* we must use addr 'hint' or fail */ |
| return _gpu_set_svm_region(private, entry, hint, len); |
| } else if (hint != 0) { |
| struct vm_area_struct *vma; |
| |
| /* |
| * See if the hint is usable, if not we will use |
| * it as the start point for searching. |
| */ |
| addr = clamp_t(unsigned long, hint & ~(align - 1), |
| start, (end - len) & ~(align - 1)); |
| |
| vma = find_vma(current->mm, addr); |
| |
| if (vma == NULL || ((addr + len) <= vma->vm_start)) { |
| result = _gpu_set_svm_region(private, entry, addr, len); |
| |
| /* On failure drop down to keep searching */ |
| if (!IS_ERR_VALUE(result)) |
| return result; |
| } |
| } else { |
| /* no hint, start search at the top and work down */ |
| addr = end & ~(align - 1); |
| } |
| |
| /* |
| * Search downwards from the hint first. If that fails we |
| * must try to search above it. |
| */ |
| result = _search_range(private, entry, start, addr, len, align); |
| if (IS_ERR_VALUE(result) && hint != 0) |
| result = _search_range(private, entry, addr, end, len, align); |
| |
| return result; |
| } |
| |
| static unsigned long |
| kgsl_get_unmapped_area(struct file *file, unsigned long addr, |
| unsigned long len, unsigned long pgoff, |
| unsigned long flags) |
| { |
| unsigned long val; |
| unsigned long vma_offset = pgoff << PAGE_SHIFT; |
| struct kgsl_device_private *dev_priv = file->private_data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_device *device = dev_priv->device; |
| struct kgsl_mem_entry *entry = NULL; |
| |
| if (vma_offset == (unsigned long) device->memstore.gpuaddr) |
| return get_unmapped_area(NULL, addr, len, pgoff, flags); |
| |
| val = get_mmap_entry(private, &entry, pgoff, len); |
| if (val) |
| return val; |
| |
| /* Do not allow CPU mappings for secure buffers */ |
| if (kgsl_memdesc_is_secured(&entry->memdesc)) { |
| val = -EPERM; |
| goto put; |
| } |
| |
| if (!kgsl_memdesc_use_cpu_map(&entry->memdesc)) { |
| val = get_unmapped_area(NULL, addr, len, 0, flags); |
| if (IS_ERR_VALUE(val)) |
| KGSL_MEM_ERR(device, |
| "get_unmapped_area: pid %d addr %lx pgoff %lx len %ld failed error %d\n", |
| private->pid, addr, pgoff, len, (int) val); |
| } else { |
| val = _get_svm_area(private, entry, addr, len, flags); |
| if (IS_ERR_VALUE(val)) |
| KGSL_MEM_ERR(device, |
| "_get_svm_area: pid %d addr %lx pgoff %lx len %ld failed error %d\n", |
| private->pid, addr, pgoff, len, (int) val); |
| } |
| |
| put: |
| kgsl_mem_entry_put(entry); |
| return val; |
| } |
| |
| static int kgsl_mmap(struct file *file, struct vm_area_struct *vma) |
| { |
| unsigned int ret, cache; |
| unsigned long vma_offset = vma->vm_pgoff << PAGE_SHIFT; |
| struct kgsl_device_private *dev_priv = file->private_data; |
| struct kgsl_process_private *private = dev_priv->process_priv; |
| struct kgsl_mem_entry *entry = NULL; |
| struct kgsl_device *device = dev_priv->device; |
| |
| /* Handle leagacy behavior for memstore */ |
| |
| if (vma_offset == (unsigned long) device->memstore.gpuaddr) |
| return kgsl_mmap_memstore(device, vma); |
| |
| /* |
| * The reference count on the entry that we get from |
| * get_mmap_entry() will be held until kgsl_gpumem_vm_close(). |
| */ |
| ret = get_mmap_entry(private, &entry, vma->vm_pgoff, |
| vma->vm_end - vma->vm_start); |
| if (ret) |
| return ret; |
| |
| vma->vm_flags |= entry->memdesc.ops->vmflags; |
| |
| vma->vm_private_data = entry; |
| |
| /* Determine user-side caching policy */ |
| |
| cache = kgsl_memdesc_get_cachemode(&entry->memdesc); |
| |
| switch (cache) { |
| case KGSL_CACHEMODE_UNCACHED: |
| vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
| break; |
| case KGSL_CACHEMODE_WRITETHROUGH: |
| vma->vm_page_prot = pgprot_writethroughcache(vma->vm_page_prot); |
| if (pgprot_val(vma->vm_page_prot) == |
| pgprot_val(pgprot_writebackcache(vma->vm_page_prot))) |
| WARN_ONCE(1, "WRITETHROUGH is deprecated for arm64"); |
| break; |
| case KGSL_CACHEMODE_WRITEBACK: |
| vma->vm_page_prot = pgprot_writebackcache(vma->vm_page_prot); |
| break; |
| case KGSL_CACHEMODE_WRITECOMBINE: |
| default: |
| vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
| break; |
| } |
| |
| vma->vm_ops = &kgsl_gpumem_vm_ops; |
| |
| if (cache == KGSL_CACHEMODE_WRITEBACK |
| || cache == KGSL_CACHEMODE_WRITETHROUGH) { |
| int i; |
| unsigned long addr = vma->vm_start; |
| struct kgsl_memdesc *m = &entry->memdesc; |
| |
| for (i = 0; i < m->page_count; i++) { |
| struct page *page = m->pages[i]; |
| |
| vm_insert_page(vma, addr, page); |
| addr += PAGE_SIZE; |
| } |
| } |
| |
| vma->vm_file = file; |
| |
| entry->memdesc.useraddr = vma->vm_start; |
| |
| trace_kgsl_mem_mmap(entry); |
| return 0; |
| } |
| |
| static irqreturn_t kgsl_irq_handler(int irq, void *data) |
| { |
| struct kgsl_device *device = data; |
| |
| return device->ftbl->irq_handler(device); |
| |
| } |
| |
| #define KGSL_READ_MESSAGE "OH HAI GPU\n" |
| |
| static ssize_t kgsl_read(struct file *filep, char __user *buf, size_t count, |
| loff_t *pos) |
| { |
| return simple_read_from_buffer(buf, count, pos, |
| KGSL_READ_MESSAGE, strlen(KGSL_READ_MESSAGE) + 1); |
| } |
| |
| static const struct file_operations kgsl_fops = { |
| .owner = THIS_MODULE, |
| .release = kgsl_release, |
| .open = kgsl_open, |
| .mmap = kgsl_mmap, |
| .read = kgsl_read, |
| .get_unmapped_area = kgsl_get_unmapped_area, |
| .unlocked_ioctl = kgsl_ioctl, |
| .compat_ioctl = kgsl_compat_ioctl, |
| }; |
| |
| struct kgsl_driver kgsl_driver = { |
| .process_mutex = __MUTEX_INITIALIZER(kgsl_driver.process_mutex), |
| .ptlock = __SPIN_LOCK_UNLOCKED(kgsl_driver.ptlock), |
| .devlock = __MUTEX_INITIALIZER(kgsl_driver.devlock), |
| /* |
| * Full cache flushes are faster than line by line on at least |
| * 8064 and 8974 once the region to be flushed is > 16mb. |
| */ |
| .full_cache_threshold = SZ_16M, |
| |
| .stats.vmalloc = ATOMIC_LONG_INIT(0), |
| .stats.vmalloc_max = ATOMIC_LONG_INIT(0), |
| .stats.page_alloc = ATOMIC_LONG_INIT(0), |
| .stats.page_alloc_max = ATOMIC_LONG_INIT(0), |
| .stats.coherent = ATOMIC_LONG_INIT(0), |
| .stats.coherent_max = ATOMIC_LONG_INIT(0), |
| .stats.secure = ATOMIC_LONG_INIT(0), |
| .stats.secure_max = ATOMIC_LONG_INIT(0), |
| .stats.mapped = ATOMIC_LONG_INIT(0), |
| .stats.mapped_max = ATOMIC_LONG_INIT(0), |
| }; |
| EXPORT_SYMBOL(kgsl_driver); |
| |
| static void _unregister_device(struct kgsl_device *device) |
| { |
| int minor; |
| |
| mutex_lock(&kgsl_driver.devlock); |
| for (minor = 0; minor < KGSL_DEVICE_MAX; minor++) { |
| if (device == kgsl_driver.devp[minor]) |
| break; |
| } |
| if (minor != KGSL_DEVICE_MAX) { |
| device_destroy(kgsl_driver.class, |
| MKDEV(MAJOR(kgsl_driver.major), minor)); |
| kgsl_driver.devp[minor] = NULL; |
| } |
| mutex_unlock(&kgsl_driver.devlock); |
| } |
| |
| static int _register_device(struct kgsl_device *device) |
| { |
| int minor, ret; |
| dev_t dev; |
| |
| /* Find a minor for the device */ |
| |
| mutex_lock(&kgsl_driver.devlock); |
| for (minor = 0; minor < KGSL_DEVICE_MAX; minor++) { |
| if (kgsl_driver.devp[minor] == NULL) { |
| kgsl_driver.devp[minor] = device; |
| break; |
| } |
| } |
| mutex_unlock(&kgsl_driver.devlock); |
| |
| if (minor == KGSL_DEVICE_MAX) { |
| KGSL_CORE_ERR("minor devices exhausted\n"); |
| return -ENODEV; |
| } |
| |
| /* Create the device */ |
| dev = MKDEV(MAJOR(kgsl_driver.major), minor); |
| device->dev = device_create(kgsl_driver.class, |
| &device->pdev->dev, |
| dev, device, |
| device->name); |
| |
| if (IS_ERR(device->dev)) { |
| mutex_lock(&kgsl_driver.devlock); |
| kgsl_driver.devp[minor] = NULL; |
| mutex_unlock(&kgsl_driver.devlock); |
| ret = PTR_ERR(device->dev); |
| KGSL_CORE_ERR("device_create(%s): %d\n", device->name, ret); |
| return ret; |
| } |
| |
| dev_set_drvdata(&device->pdev->dev, device); |
| return 0; |
| } |
| |
| int kgsl_device_platform_probe(struct kgsl_device *device) |
| { |
| int status = -EINVAL; |
| struct resource *res; |
| int cpu; |
| |
| status = _register_device(device); |
| if (status) |
| return status; |
| |
| /* Initialize logging first, so that failures below actually print. */ |
| kgsl_device_debugfs_init(device); |
| |
| status = kgsl_pwrctrl_init(device); |
| if (status) |
| goto error; |
| |
| /* Get starting physical address of device registers */ |
| res = platform_get_resource_byname(device->pdev, IORESOURCE_MEM, |
| device->iomemname); |
| if (res == NULL) { |
| KGSL_DRV_ERR(device, "platform_get_resource_byname failed\n"); |
| status = -EINVAL; |
| goto error_pwrctrl_close; |
| } |
| if (res->start == 0 || resource_size(res) == 0) { |
| KGSL_DRV_ERR(device, "dev %d invalid register region\n", |
| device->id); |
| status = -EINVAL; |
| goto error_pwrctrl_close; |
| } |
| |
| device->reg_phys = res->start; |
| device->reg_len = resource_size(res); |
| |
| /* |
| * Check if a shadermemname is defined, and then get shader memory |
| * details including shader memory starting physical address |
| * and shader memory length |
| */ |
| if (device->shadermemname != NULL) { |
| res = platform_get_resource_byname(device->pdev, IORESOURCE_MEM, |
| device->shadermemname); |
| |
| if (res == NULL) { |
| KGSL_DRV_WARN(device, |
| "Shader memory: platform_get_resource_byname failed\n"); |
| } |
| |
| else { |
| device->shader_mem_phys = res->start; |
| device->shader_mem_len = resource_size(res); |
| } |
| |
| if (!devm_request_mem_region(device->dev, |
| device->shader_mem_phys, |
| device->shader_mem_len, |
| device->name)) { |
| KGSL_DRV_WARN(device, "request_mem_region_failed\n"); |
| } |
| } |
| |
| if (!devm_request_mem_region(device->dev, device->reg_phys, |
| device->reg_len, device->name)) { |
| KGSL_DRV_ERR(device, "request_mem_region failed\n"); |
| status = -ENODEV; |
| goto error_pwrctrl_close; |
| } |
| |
| device->reg_virt = devm_ioremap(device->dev, device->reg_phys, |
| device->reg_len); |
| |
| if (device->reg_virt == NULL) { |
| KGSL_DRV_ERR(device, "ioremap failed\n"); |
| status = -ENODEV; |
| goto error_pwrctrl_close; |
| } |
| /*acquire interrupt */ |
| device->pwrctrl.interrupt_num = |
| platform_get_irq_byname(device->pdev, device->pwrctrl.irq_name); |
| |
| if (device->pwrctrl.interrupt_num <= 0) { |
| KGSL_DRV_ERR(device, "platform_get_irq_byname failed: %d\n", |
| device->pwrctrl.interrupt_num); |
| status = -EINVAL; |
| goto error_pwrctrl_close; |
| } |
| |
| status = devm_request_irq(device->dev, device->pwrctrl.interrupt_num, |
| kgsl_irq_handler, IRQF_TRIGGER_HIGH, |
| device->name, device); |
| if (status) { |
| KGSL_DRV_ERR(device, "request_irq(%d) failed: %d\n", |
| device->pwrctrl.interrupt_num, status); |
| goto error_pwrctrl_close; |
| } |
| disable_irq(device->pwrctrl.interrupt_num); |
| |
| KGSL_DRV_INFO(device, |
| "dev_id %d regs phys 0x%08lx size 0x%08x\n", |
| device->id, device->reg_phys, device->reg_len); |
| |
| rwlock_init(&device->context_lock); |
| |
| setup_timer(&device->idle_timer, kgsl_timer, (unsigned long) device); |
| |
| status = kgsl_mmu_probe(device, kgsl_mmu_type); |
| if (status != 0) |
| goto error_pwrctrl_close; |
| |
| /* Check to see if our device can perform DMA correctly */ |
| status = dma_set_coherent_mask(&device->pdev->dev, KGSL_DMA_BIT_MASK); |
| if (status) |
| goto error_close_mmu; |
| |
| /* Initialize the memory pools */ |
| kgsl_init_page_pools(device->pdev); |
| |
| status = kgsl_allocate_global(device, &device->memstore, |
| KGSL_MEMSTORE_SIZE, 0, KGSL_MEMDESC_CONTIG, "memstore"); |
| |
| if (status != 0) |
| goto error_close_mmu; |
| |
| status = kgsl_allocate_global(device, &device->scratch, |
| PAGE_SIZE, 0, 0, "scratch"); |
| if (status != 0) |
| goto error_free_memstore; |
| |
| /* |
| * The default request type PM_QOS_REQ_ALL_CORES is |
| * applicable to all CPU cores that are online and |
| * would have a power impact when there are more |
| * number of CPUs. PM_QOS_REQ_AFFINE_IRQ request |
| * type shall update/apply the vote only to that CPU to |
| * which IRQ's affinity is set to. |
| */ |
| #ifdef CONFIG_SMP |
| |
| device->pwrctrl.pm_qos_req_dma.type = PM_QOS_REQ_AFFINE_IRQ; |
| device->pwrctrl.pm_qos_req_dma.irq = device->pwrctrl.interrupt_num; |
| |
| #endif |
| pm_qos_add_request(&device->pwrctrl.pm_qos_req_dma, |
| PM_QOS_CPU_DMA_LATENCY, |
| PM_QOS_DEFAULT_VALUE); |
| |
| if (device->pwrctrl.l2pc_cpus_mask) { |
| |
| device->pwrctrl.l2pc_cpus_qos.type = |
| PM_QOS_REQ_AFFINE_CORES; |
| cpumask_empty(&device->pwrctrl.l2pc_cpus_qos.cpus_affine); |
| for_each_possible_cpu(cpu) { |
| if ((1 << cpu) & device->pwrctrl.l2pc_cpus_mask) |
| cpumask_set_cpu(cpu, &device->pwrctrl. |
| l2pc_cpus_qos.cpus_affine); |
| } |
| |
| pm_qos_add_request(&device->pwrctrl.l2pc_cpus_qos, |
| PM_QOS_CPU_DMA_LATENCY, |
| PM_QOS_DEFAULT_VALUE); |
| } |
| |
| device->events_wq = alloc_workqueue("kgsl-events", |
| WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
| |
| /* Initialize the snapshot engine */ |
| kgsl_device_snapshot_init(device); |
| |
| /* Initialize common sysfs entries */ |
| kgsl_pwrctrl_init_sysfs(device); |
| |
| return 0; |
| |
| error_free_memstore: |
| kgsl_free_global(device, &device->memstore); |
| error_close_mmu: |
| kgsl_mmu_close(device); |
| error_pwrctrl_close: |
| kgsl_pwrctrl_close(device); |
| error: |
| _unregister_device(device); |
| return status; |
| } |
| EXPORT_SYMBOL(kgsl_device_platform_probe); |
| |
| void kgsl_device_platform_remove(struct kgsl_device *device) |
| { |
| destroy_workqueue(device->events_wq); |
| |
| kgsl_device_snapshot_close(device); |
| |
| kgsl_exit_page_pools(); |
| |
| kgsl_pwrctrl_uninit_sysfs(device); |
| |
| pm_qos_remove_request(&device->pwrctrl.pm_qos_req_dma); |
| if (device->pwrctrl.l2pc_cpus_mask) |
| pm_qos_remove_request(&device->pwrctrl.l2pc_cpus_qos); |
| |
| idr_destroy(&device->context_idr); |
| |
| kgsl_free_global(device, &device->scratch); |
| |
| kgsl_free_global(device, &device->memstore); |
| |
| kgsl_mmu_close(device); |
| |
| kgsl_pwrctrl_close(device); |
| |
| _unregister_device(device); |
| } |
| EXPORT_SYMBOL(kgsl_device_platform_remove); |
| |
| static void kgsl_core_exit(void) |
| { |
| kgsl_events_exit(); |
| kgsl_core_debugfs_close(); |
| |
| /* |
| * We call kgsl_sharedmem_uninit_sysfs() and device_unregister() |
| * only if kgsl_driver.virtdev has been populated. |
| * We check at least one member of kgsl_driver.virtdev to |
| * see if it is not NULL (and thus, has been populated). |
| */ |
| if (kgsl_driver.virtdev.class) { |
| kgsl_sharedmem_uninit_sysfs(); |
| device_unregister(&kgsl_driver.virtdev); |
| } |
| |
| if (kgsl_driver.class) { |
| class_destroy(kgsl_driver.class); |
| kgsl_driver.class = NULL; |
| } |
| |
| kgsl_drawobjs_cache_exit(); |
| |
| kgsl_memfree_exit(); |
| unregister_chrdev_region(kgsl_driver.major, KGSL_DEVICE_MAX); |
| } |
| |
| static int __init kgsl_core_init(void) |
| { |
| int result = 0; |
| /* alloc major and minor device numbers */ |
| result = alloc_chrdev_region(&kgsl_driver.major, 0, KGSL_DEVICE_MAX, |
| "kgsl"); |
| |
| if (result < 0) { |
| |
| KGSL_CORE_ERR("alloc_chrdev_region failed err = %d\n", result); |
| goto err; |
| } |
| |
| cdev_init(&kgsl_driver.cdev, &kgsl_fops); |
| kgsl_driver.cdev.owner = THIS_MODULE; |
| kgsl_driver.cdev.ops = &kgsl_fops; |
| result = cdev_add(&kgsl_driver.cdev, MKDEV(MAJOR(kgsl_driver.major), 0), |
| KGSL_DEVICE_MAX); |
| |
| if (result) { |
| KGSL_CORE_ERR("kgsl: cdev_add() failed, dev_num= %d, result= %d\n", |
| kgsl_driver.major, result); |
| goto err; |
| } |
| |
| kgsl_driver.class = class_create(THIS_MODULE, "kgsl"); |
| |
| if (IS_ERR(kgsl_driver.class)) { |
| result = PTR_ERR(kgsl_driver.class); |
| KGSL_CORE_ERR("failed to create class for kgsl"); |
| goto err; |
| } |
| |
| /* |
| * Make a virtual device for managing core related things |
| * in sysfs |
| */ |
| kgsl_driver.virtdev.class = kgsl_driver.class; |
| dev_set_name(&kgsl_driver.virtdev, "kgsl"); |
| result = device_register(&kgsl_driver.virtdev); |
| if (result) { |
| KGSL_CORE_ERR("driver_register failed\n"); |
| goto err; |
| } |
| |
| /* Make kobjects in the virtual device for storing statistics */ |
| |
| kgsl_driver.ptkobj = |
| kobject_create_and_add("pagetables", |
| &kgsl_driver.virtdev.kobj); |
| |
| kgsl_driver.prockobj = |
| kobject_create_and_add("proc", |
| &kgsl_driver.virtdev.kobj); |
| |
| kgsl_core_debugfs_init(); |
| |
| kgsl_sharedmem_init_sysfs(); |
| |
| INIT_LIST_HEAD(&kgsl_driver.process_list); |
| |
| INIT_LIST_HEAD(&kgsl_driver.pagetable_list); |
| |
| kgsl_driver.workqueue = alloc_workqueue("kgsl-workqueue", |
| WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
| |
| kgsl_driver.mem_workqueue = alloc_workqueue("kgsl-mementry", |
| WQ_UNBOUND | WQ_MEM_RECLAIM, 0); |
| |
| kgsl_events_init(); |
| |
| result = kgsl_drawobjs_cache_init(); |
| if (result) |
| goto err; |
| |
| kgsl_memfree_init(); |
| |
| return 0; |
| |
| err: |
| kgsl_core_exit(); |
| return result; |
| } |
| |
| module_init(kgsl_core_init); |
| module_exit(kgsl_core_exit); |
| |
| MODULE_DESCRIPTION("MSM GPU driver"); |
| MODULE_LICENSE("GPL"); |