diff options
Diffstat (limited to 'drivers/gpu/arm/midgard/mali_kbase_mem.h')
| -rwxr-xr-x | drivers/gpu/arm/midgard/mali_kbase_mem.h | 616 |
1 files changed, 616 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/mali_kbase_mem.h b/drivers/gpu/arm/midgard/mali_kbase_mem.h new file mode 100755 index 00000000000..8cbde3210a4 --- /dev/null +++ b/drivers/gpu/arm/midgard/mali_kbase_mem.h @@ -0,0 +1,616 @@ +/* + * + * (C) COPYRIGHT ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained + * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + + + + + +/** + * @file mali_kbase_mem.h + * Base kernel memory APIs + */ + +#ifndef _KBASE_MEM_H_ +#define _KBASE_MEM_H_ + +#ifndef _KBASE_H_ +#error "Don't include this file directly, use mali_kbase.h instead" +#endif + +#include <malisw/mali_malisw.h> +#include <linux/kref.h> + +#ifdef CONFIG_UMP +#include <linux/ump.h> +#endif /* CONFIG_UMP */ +#include "mali_base_kernel.h" +#include <mali_kbase_hw.h> +#include "mali_kbase_pm.h" +#include "mali_kbase_defs.h" +#ifdef CONFIG_MALI_GATOR_SUPPORT +#include "mali_kbase_gator.h" +#endif /*CONFIG_MALI_GATOR_SUPPORT*/ + +/* Part of the workaround for uTLB invalid pages is to ensure we grow/shrink tmem by 4 pages at a time */ +#define KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_LOG2_HW_ISSUE_8316 (2) /* round to 4 pages */ + +/* Part of the workaround for PRLAM-9630 requires us to grow/shrink memory by 8 pages. +The MMU reads in 8 page table entries from memory at a time, if we have more than one page fault within the same 8 pages and +page tables are updated accordingly, the MMU does not re-read the page table entries from memory for the subsequent page table +updates and generates duplicate page faults as the page table information used by the MMU is not valid. */ +#define KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_LOG2_HW_ISSUE_9630 (3) /* round to 8 pages */ + +#define KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_LOG2 (0) /* round to 1 page */ + +/* This must always be a power of 2 */ +#define KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES (1u << KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_LOG2) +#define KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_HW_ISSUE_8316 (1u << KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_LOG2_HW_ISSUE_8316) +#define KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_HW_ISSUE_9630 (1u << KBASEP_TMEM_GROWABLE_BLOCKSIZE_PAGES_LOG2_HW_ISSUE_9630) +/** + * A CPU mapping + */ +typedef struct kbase_cpu_mapping { + struct list_head mappings_list; + struct kbase_mem_phy_alloc *alloc; + struct kbase_context *kctx; + struct kbase_va_region *region; + pgoff_t page_off; + int count; + + unsigned long vm_start; + unsigned long vm_end; +} kbase_cpu_mapping; + +enum kbase_memory_type { + KBASE_MEM_TYPE_NATIVE, + KBASE_MEM_TYPE_IMPORTED_UMP, + KBASE_MEM_TYPE_IMPORTED_UMM, + KBASE_MEM_TYPE_ALIAS, + KBASE_MEM_TYPE_TB, + KBASE_MEM_TYPE_RAW +}; + +/* internal structure, mirroring base_mem_aliasing_info, + * but with alloc instead of a gpu va (handle) */ +struct kbase_aliased { + struct kbase_mem_phy_alloc *alloc; /* NULL for special, non-NULL for native */ + u64 offset; /* in pages */ + u64 length; /* in pages */ +}; + +/* physical pages tracking object. + * Set up to track N pages. + * N not stored here, the creator holds that info. + * This object only tracks how many elements are actually valid (present). + * Changing of nents or *pages should only happen if the kbase_mem_phy_alloc is not + * shared with another region or client. CPU mappings are OK to exist when changing, as + * long as the tracked mappings objects are updated as part of the change. + */ +struct kbase_mem_phy_alloc +{ + struct kref kref; /* number of users of this alloc */ + atomic_t gpu_mappings; + size_t nents; /* 0..N */ + phys_addr_t * pages; /* N elements, only 0..nents are valid */ + + /* kbase_cpu_mappings */ + struct list_head mappings; + + /* type of buffer */ + enum kbase_memory_type type; + + int accessed_cached; + + /* member in union valid based on @a type */ + union { +#ifdef CONFIG_UMP + ump_dd_handle ump_handle; +#endif /* CONFIG_UMP */ +#if defined(CONFIG_DMA_SHARED_BUFFER) + struct { + struct dma_buf *dma_buf; + struct dma_buf_attachment *dma_attachment; + unsigned int current_mapping_usage_count; + struct sg_table *sgt; + } umm; +#endif /* defined(CONFIG_DMA_SHARED_BUFFER) */ + struct { + mali_size64 stride; + size_t nents; + struct kbase_aliased *aliased; + } alias; + /* Used by type = (KBASE_MEM_TYPE_NATIVE, KBASE_MEM_TYPE_TB) */ + struct kbase_context *kctx; + } imported; +}; + +static inline void kbase_mem_phy_alloc_gpu_mapped(struct kbase_mem_phy_alloc *alloc) +{ + KBASE_DEBUG_ASSERT(alloc); + /* we only track mappings of NATIVE buffers */ + if (alloc->type == KBASE_MEM_TYPE_NATIVE) + atomic_inc(&alloc->gpu_mappings); +} + +static inline void kbase_mem_phy_alloc_gpu_unmapped(struct kbase_mem_phy_alloc *alloc) +{ + KBASE_DEBUG_ASSERT(alloc); + /* we only track mappings of NATIVE buffers */ + if (alloc->type == KBASE_MEM_TYPE_NATIVE) + if (0 > atomic_dec_return(&alloc->gpu_mappings)) { + pr_err("Mismatched %s:\n", __func__); + dump_stack(); + } +} + +void kbase_mem_kref_free(struct kref * kref); + +mali_error kbase_mem_init(kbase_device * kbdev); +void kbase_mem_halt(kbase_device * kbdev); +void kbase_mem_term(kbase_device * kbdev); + +static inline struct kbase_mem_phy_alloc * kbase_mem_phy_alloc_get(struct kbase_mem_phy_alloc * alloc) +{ + kref_get(&alloc->kref); + return alloc; +} + +static inline struct kbase_mem_phy_alloc * kbase_mem_phy_alloc_put(struct kbase_mem_phy_alloc * alloc) +{ + kref_put(&alloc->kref, kbase_mem_kref_free); + return NULL; +} + +/** + * A GPU memory region, and attributes for CPU mappings. + */ +typedef struct kbase_va_region { + struct rb_node rblink; + struct list_head link; + + kbase_context *kctx; /* Backlink to base context */ + + u64 start_pfn; /* The PFN in GPU space */ + size_t nr_pages; + +/* Free region */ +#define KBASE_REG_FREE (1ul << 0) +/* CPU write access */ +#define KBASE_REG_CPU_WR (1ul << 1) +/* GPU write access */ +#define KBASE_REG_GPU_WR (1ul << 2) +/* No eXecute flag */ +#define KBASE_REG_GPU_NX (1ul << 3) +/* Is CPU cached? */ +#define KBASE_REG_CPU_CACHED (1ul << 4) +/* Is GPU cached? */ +#define KBASE_REG_GPU_CACHED (1ul << 5) + +#define KBASE_REG_GROWABLE (1ul << 6) +/* Can grow on pf? */ +#define KBASE_REG_PF_GROW (1ul << 7) + +/* VA managed by us */ +#define KBASE_REG_CUSTOM_VA (1ul << 8) + +/* inner shareable coherency */ +#define KBASE_REG_SHARE_IN (1ul << 9) +/* inner & outer shareable coherency */ +#define KBASE_REG_SHARE_BOTH (1ul << 10) + +/* Space for 4 different zones */ +#define KBASE_REG_ZONE_MASK (3ul << 11) +#define KBASE_REG_ZONE(x) (((x) & 3) << 11) + +/* GPU read access */ +#define KBASE_REG_GPU_RD (1ul<<13) +/* CPU read access */ +#define KBASE_REG_CPU_RD (1ul<<14) + +/* Aligned for GPU EX in SAME_VA */ +#define KBASE_REG_ALIGNED (1ul<<15) + +/* Index of chosen MEMATTR for this region (0..7) */ +#define KBASE_REG_MEMATTR_MASK (7ul << 16) +#define KBASE_REG_MEMATTR_INDEX(x) (((x) & 7) << 16) +#define KBASE_REG_MEMATTR_VALUE(x) (((x) & KBASE_REG_MEMATTR_MASK) >> 16) + +#define KBASE_REG_ZONE_SAME_VA KBASE_REG_ZONE(0) + +/* only used with 32-bit clients */ +/* + * On a 32bit platform, custom VA should be wired from (4GB + shader region) + * to the VA limit of the GPU. Unfortunately, the Linux mmap() interface + * limits us to 2^32 pages (2^44 bytes, see mmap64 man page for reference). + * So we put the default limit to the maximum possible on Linux and shrink + * it down, if required by the GPU, during initialization. + */ +#define KBASE_REG_ZONE_EXEC KBASE_REG_ZONE(1) /* Dedicated 16MB region for shader code */ +#define KBASE_REG_ZONE_EXEC_BASE ((1ULL << 32) >> PAGE_SHIFT) +#define KBASE_REG_ZONE_EXEC_SIZE ((16ULL * 1024 * 1024) >> PAGE_SHIFT) + +#define KBASE_REG_ZONE_CUSTOM_VA KBASE_REG_ZONE(2) +#define KBASE_REG_ZONE_CUSTOM_VA_BASE (KBASE_REG_ZONE_EXEC_BASE + KBASE_REG_ZONE_EXEC_SIZE) /* Starting after KBASE_REG_ZONE_EXEC */ +#define KBASE_REG_ZONE_CUSTOM_VA_SIZE (((1ULL << 44) >> PAGE_SHIFT) - KBASE_REG_ZONE_CUSTOM_VA_BASE) +/* end 32-bit clients only */ + + unsigned long flags; + + size_t extent; /* nr of pages alloc'd on PF */ + + struct kbase_mem_phy_alloc * alloc; /* the one alloc object we mmap to the GPU and CPU when mapping this region */ + + /* non-NULL if this memory object is a kds_resource */ + struct kds_resource *kds_res; + +} kbase_va_region; + +/* Common functions */ +static INLINE phys_addr_t *kbase_get_phy_pages(struct kbase_va_region *reg) +{ + KBASE_DEBUG_ASSERT(reg); + KBASE_DEBUG_ASSERT(reg->alloc); + + return reg->alloc->pages; +} + +static INLINE size_t kbase_reg_current_backed_size(struct kbase_va_region * reg) +{ + KBASE_DEBUG_ASSERT(reg); + /* if no alloc object the backed size naturally is 0 */ + if (reg->alloc) + return reg->alloc->nents; + else + return 0; +} + +static INLINE struct kbase_mem_phy_alloc * kbase_alloc_create(size_t nr_pages, enum kbase_memory_type type) +{ + struct kbase_mem_phy_alloc * alloc; + const size_t extra_pages = (sizeof(*alloc) + (PAGE_SIZE - 1)) >> PAGE_SHIFT; + + /* Prevent nr_pages*sizeof + sizeof(*alloc) from wrapping around. */ + if (nr_pages > (((size_t) -1 / sizeof(*alloc->pages))) - extra_pages) + return ERR_PTR(-ENOMEM); + + alloc = vzalloc(sizeof(*alloc) + sizeof(*alloc->pages) * nr_pages); + if (!alloc) + return ERR_PTR(-ENOMEM); + + kref_init(&alloc->kref); + atomic_set(&alloc->gpu_mappings, 0); + alloc->nents = 0; + alloc->pages = (void*)(alloc + 1); + INIT_LIST_HEAD(&alloc->mappings); + alloc->type = type; + + return alloc; +} + +static INLINE int kbase_reg_prepare_native(struct kbase_va_region * reg, struct kbase_context * kctx) +{ + KBASE_DEBUG_ASSERT(reg); + KBASE_DEBUG_ASSERT(!reg->alloc); + KBASE_DEBUG_ASSERT(reg->flags & KBASE_REG_FREE); + + reg->alloc = kbase_alloc_create(reg->nr_pages, KBASE_MEM_TYPE_NATIVE); + if (IS_ERR(reg->alloc)) + return PTR_ERR(reg->alloc); + else if (!reg->alloc) + return -ENOMEM; + reg->alloc->imported.kctx = kctx; + reg->flags &= ~KBASE_REG_FREE; + return 0; +} + +static inline int kbase_atomic_add_pages(int num_pages, atomic_t *used_pages) +{ + int new_val = atomic_add_return(num_pages, used_pages); +#ifdef CONFIG_MALI_GATOR_SUPPORT + kbase_trace_mali_total_alloc_pages_change((long long int)new_val); +#endif + return new_val; +} + +static inline int kbase_atomic_sub_pages(int num_pages, atomic_t *used_pages) +{ + int new_val = atomic_sub_return(num_pages, used_pages); +#ifdef CONFIG_MALI_GATOR_SUPPORT + kbase_trace_mali_total_alloc_pages_change((long long int)new_val); +#endif + return new_val; +} + +/** + * @brief Initialize an OS based memory allocator. + * + * Initializes a allocator. + * Must be called before any allocation is attempted. + * \a kbase_mem_allocator_alloc and \a kbase_mem_allocator_free is used + * to allocate and free memory. + * \a kbase_mem_allocator_term must be called to clean up the allocator. + * All memory obtained via \a kbase_mem_allocator_alloc must have been + * \a kbase_mem_allocator_free before \a kbase_mem_allocator_term is called. + * + * @param allocator Allocator object to initialize + * @param max_size Maximum number of pages to keep on the freelist. + * @return MALI_ERROR_NONE on success, an error code indicating what failed on error. + */ +mali_error kbase_mem_allocator_init(kbase_mem_allocator * allocator, unsigned int max_size); + +/** + * @brief Allocate memory via an OS based memory allocator. + * + * @param[in] allocator Allocator to obtain the memory from + * @param nr_pages Number of pages to allocate + * @param[out] pages Pointer to an array where the physical address of the allocated pages will be stored + * @return MALI_ERROR_NONE if the pages were allocated, an error code indicating what failed on error + */ +mali_error kbase_mem_allocator_alloc(kbase_mem_allocator * allocator, size_t nr_pages, phys_addr_t *pages); + +/** + * @brief Free memory obtained for an OS based memory allocator. + * + * @param[in] allocator Allocator to free the memory back to + * @param nr_pages Number of pages to free + * @param[in] pages Pointer to an array holding the physical address of the paghes to free. + * @param[in] sync_back MALI_TRUE case the memory should be synced back + */ +void kbase_mem_allocator_free(kbase_mem_allocator * allocator, size_t nr_pages, phys_addr_t *pages, mali_bool sync_back); + +/** + * @brief Terminate an OS based memory allocator. + * + * Frees all cached allocations and clean up internal state. + * All allocate pages must have been \a kbase_mem_allocator_free before + * this function is called. + * + * @param[in] allocator Allocator to terminate + */ +void kbase_mem_allocator_term(kbase_mem_allocator * allocator); + + + +mali_error kbase_region_tracker_init(kbase_context *kctx); +void kbase_region_tracker_term(kbase_context *kctx); + +struct kbase_va_region *kbase_region_tracker_find_region_enclosing_range(kbase_context *kctx, u64 start_pgoff, size_t nr_pages); + +struct kbase_va_region *kbase_region_tracker_find_region_enclosing_address(kbase_context *kctx, mali_addr64 gpu_addr); + +/** + * @brief Check that a pointer is actually a valid region. + * + * Must be called with context lock held. + */ +struct kbase_va_region *kbase_region_tracker_find_region_base_address(kbase_context *kctx, mali_addr64 gpu_addr); + +struct kbase_va_region *kbase_alloc_free_region(kbase_context *kctx, u64 start_pfn, size_t nr_pages, int zone); +void kbase_free_alloced_region(struct kbase_va_region *reg); +mali_error kbase_add_va_region(kbase_context *kctx, struct kbase_va_region *reg, mali_addr64 addr, size_t nr_pages, size_t align); + +mali_error kbase_gpu_mmap(kbase_context *kctx, struct kbase_va_region *reg, mali_addr64 addr, size_t nr_pages, size_t align); +mali_bool kbase_check_alloc_flags(unsigned long flags); +void kbase_update_region_flags(struct kbase_va_region *reg, unsigned long flags); + +void kbase_gpu_vm_lock(kbase_context *kctx); +void kbase_gpu_vm_unlock(kbase_context *kctx); + +int kbase_alloc_phy_pages(struct kbase_va_region *reg, size_t vsize, size_t size); + +mali_error kbase_mmu_init(kbase_context *kctx); +void kbase_mmu_term(kbase_context *kctx); + +phys_addr_t kbase_mmu_alloc_pgd(kbase_context *kctx); +void kbase_mmu_free_pgd(kbase_context *kctx); +mali_error kbase_mmu_insert_pages(kbase_context *kctx, u64 vpfn, + phys_addr_t *phys, size_t nr, + unsigned long flags); +mali_error kbase_mmu_insert_single_page(kbase_context *kctx, u64 vpfn, + phys_addr_t phys, size_t nr, + unsigned long flags); + +mali_error kbase_mmu_teardown_pages(kbase_context *kctx, u64 vpfn, size_t nr); +mali_error kbase_mmu_update_pages(kbase_context* kctx, u64 vpfn, phys_addr_t* phys, size_t nr, unsigned long flags); + +/** + * @brief Register region and map it on the GPU. + * + * Call kbase_add_va_region() and map the region on the GPU. + */ +mali_error kbase_gpu_mmap(kbase_context *kctx, struct kbase_va_region *reg, mali_addr64 addr, size_t nr_pages, size_t align); + +/** + * @brief Remove the region from the GPU and unregister it. + * + * Must be called with context lock held. + */ +mali_error kbase_gpu_munmap(kbase_context *kctx, struct kbase_va_region *reg); + +/** + * The caller has the following locking conditions: + * - It must hold kbase_as::transaction_mutex on kctx's address space + * - It must hold the kbasep_js_device_data::runpool_irq::lock + */ +void kbase_mmu_update(kbase_context *kctx); + +/** + * The caller has the following locking conditions: + * - It must hold kbase_as::transaction_mutex on kctx's address space + * - It must hold the kbasep_js_device_data::runpool_irq::lock + */ +void kbase_mmu_disable(kbase_context *kctx); + +void kbase_mmu_interrupt(kbase_device *kbdev, u32 irq_stat); + +/** Dump the MMU tables to a buffer + * + * This function allocates a buffer (of @c nr_pages pages) to hold a dump of the MMU tables and fills it. If the + * buffer is too small then the return value will be NULL. + * + * The GPU vm lock must be held when calling this function. + * + * The buffer returned should be freed with @ref vfree when it is no longer required. + * + * @param[in] kctx The kbase context to dump + * @param[in] nr_pages The number of pages to allocate for the buffer. + * + * @return The address of the buffer containing the MMU dump or NULL on error (including if the @c nr_pages is too + * small) + */ +void *kbase_mmu_dump(kbase_context *kctx, int nr_pages); + +mali_error kbase_sync_now(kbase_context *kctx, base_syncset *syncset); +void kbase_pre_job_sync(kbase_context *kctx, base_syncset *syncsets, size_t nr); +void kbase_post_job_sync(kbase_context *kctx, base_syncset *syncsets, size_t nr); + +/** + * Set attributes for imported tmem region + * + * This function sets (extends with) requested attributes for given region + * of imported external memory + * + * @param[in] kctx The kbase context which the tmem belongs to + * @param[in] gpu_adr The base address of the tmem region + * @param[in] attributes The attributes of tmem region to be set + * + * @return MALI_ERROR_NONE on success. Any other value indicates failure. + */ +mali_error kbase_tmem_set_attributes(kbase_context *kctx, mali_addr64 gpu_adr, u32 attributes ); + +/** + * Get attributes of imported tmem region + * + * This function retrieves the attributes of imported external memory + * + * @param[in] kctx The kbase context which the tmem belongs to + * @param[in] gpu_adr The base address of the tmem region + * @param[out] attributes The actual attributes of tmem region + * + * @return MALI_ERROR_NONE on success. Any other value indicates failure. + */ +mali_error kbase_tmem_get_attributes(kbase_context *kctx, mali_addr64 gpu_adr, u32 * const attributes ); + +/* OS specific functions */ +mali_error kbase_mem_free(kbase_context *kctx, mali_addr64 gpu_addr); +mali_error kbase_mem_free_region(kbase_context *kctx, struct kbase_va_region *reg); +void kbase_os_mem_map_lock(kbase_context *kctx); +void kbase_os_mem_map_unlock(kbase_context *kctx); + +/** + * @brief Update the memory allocation counters for the current process + * + * OS specific call to updates the current memory allocation counters for the current process with + * the supplied delta. + * + * @param[in] kctx The kbase context + * @param[in] pages The desired delta to apply to the memory usage counters. + */ + +void kbasep_os_process_page_usage_update( struct kbase_context * kctx, int pages ); + +/** + * @brief Add to the memory allocation counters for the current process + * + * OS specific call to add to the current memory allocation counters for the current process by + * the supplied amount. + * + * @param[in] kctx The kernel base context used for the allocation. + * @param[in] pages The desired delta to apply to the memory usage counters. + */ + +static INLINE void kbase_process_page_usage_inc( struct kbase_context *kctx, int pages ) +{ + kbasep_os_process_page_usage_update( kctx, pages ); +} + +/** + * @brief Subtract from the memory allocation counters for the current process + * + * OS specific call to subtract from the current memory allocation counters for the current process by + * the supplied amount. + * + * @param[in] kctx The kernel base context used for the allocation. + * @param[in] pages The desired delta to apply to the memory usage counters. + */ + +static INLINE void kbase_process_page_usage_dec( struct kbase_context *kctx, int pages ) +{ + kbasep_os_process_page_usage_update( kctx, 0 - pages ); +} + +/** + * @brief Find the offset of the CPU mapping of a memory allocation containing + * a given address range + * + * Searches for a CPU mapping of any part of the region starting at @p gpu_addr + * that fully encloses the CPU virtual address range specified by @p uaddr and + * @p size. Returns a failure indication if only part of the address range lies + * within a CPU mapping, or the address range lies within a CPU mapping of a + * different region. + * + * @param[in,out] kctx The kernel base context used for the allocation. + * @param[in] gpu_addr GPU address of the start of the allocated region + * within which to search. + * @param[in] uaddr Start of the CPU virtual address range. + * @param[in] size Size of the CPU virtual address range (in bytes). + * @param[out] offset The offset from the start of the allocation to the + * specified CPU virtual address. + * + * @return MALI_ERROR_NONE if offset was obtained successfully. Error code + * otherwise. + */ +mali_error kbasep_find_enclosing_cpu_mapping_offset(kbase_context *kctx, + mali_addr64 gpu_addr, + unsigned long uaddr, + size_t size, + mali_size64 *offset); + +enum hrtimer_restart kbasep_as_poke_timer_callback(struct hrtimer *timer); +void kbase_as_poking_timer_retain_atom(kbase_device *kbdev, kbase_context *kctx, kbase_jd_atom *katom); +void kbase_as_poking_timer_release_atom(kbase_device *kbdev, kbase_context *kctx, kbase_jd_atom *katom); + +/** +* @brief Allocates physical pages. +* +* Allocates \a nr_pages_requested and updates the alloc object. +* +* @param[in] alloc allocation object to add pages to +* @param[in] nr_pages_requested number of physical pages to allocate +* +* @return 0 if all pages have been successfully allocated. Error code otherwise +*/ +int kbase_alloc_phy_pages_helper(struct kbase_mem_phy_alloc * alloc, size_t nr_pages_requested); + +/** +* @brief Free physical pages. +* +* Frees \a nr_pages and updates the alloc object. +* +* @param[in] alloc allocation object to free pages from +* @param[in] nr_pages_to_free number of physical pages to free +*/ +int kbase_free_phy_pages_helper(struct kbase_mem_phy_alloc * alloc, size_t nr_pages_to_free); + +#ifdef CONFIG_MALI_NO_MALI +static inline void kbase_wait_write_flush(kbase_context *kctx) +{ +} +#else +void kbase_wait_write_flush(kbase_context *kctx); +#endif + + +#endif /* _KBASE_MEM_H_ */ |