diff options
Diffstat (limited to 'drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.c')
| -rw-r--r-- | drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.c | 2924 |
1 files changed, 2924 insertions, 0 deletions
diff --git a/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.c b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.c new file mode 100644 index 00000000000..7a48e27ede7 --- /dev/null +++ b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.c @@ -0,0 +1,2924 @@ +/* + * Copyright (C) 2010-2011 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. + */ + +#include "mali_kernel_subsystem.h" +#include "mali_kernel_mem.h" +#include "mali_kernel_ioctl.h" +#include "mali_kernel_descriptor_mapping.h" +#include "mali_kernel_mem_mmu.h" +#include "mali_kernel_memory_engine.h" +#include "mali_block_allocator.h" +#include "mali_kernel_mem_os.h" +#include "mali_kernel_session_manager.h" +#include "mali_kernel_core.h" + +#if defined USING_MALI400_L2_CACHE +#include "mali_kernel_l2_cache.h" +#endif + +#if MALI_USE_UNIFIED_MEMORY_PROVIDER != 0 +#include "ump_kernel_interface.h" +#endif + +/* kernel side OS functions and user-kernel interface */ +#include "mali_osk.h" +#include "mali_osk_mali.h" +#include "mali_ukk.h" +#include "mali_osk_bitops.h" +#include "mali_osk_list.h" + +/** + * Size of the MMU registers in bytes + */ +#define MALI_MMU_REGISTERS_SIZE 0x24 + +/** + * Size of an MMU page in bytes + */ +#define MALI_MMU_PAGE_SIZE 0x1000 + +/** + * Page directory index from address + * Calculates the page directory index from the given address + */ +#define MALI_MMU_PDE_ENTRY(address) (((address)>>22) & 0x03FF) + +/** + * Page table index from address + * Calculates the page table index from the given address + */ +#define MALI_MMU_PTE_ENTRY(address) (((address)>>12) & 0x03FF) + +/** + * Extract the memory address from an PDE/PTE entry + */ +#define MALI_MMU_ENTRY_ADDRESS(value) ((value) & 0xFFFFFC00) + +/** + * Linux kernel version has marked SA_SHIRQ as deprecated, IRQF_SHARED should be used. + * This is to handle older kernels which haven't done this swap. + */ +#ifndef IRQF_SHARED +#define IRQF_SHARED SA_SHIRQ +#endif /* IRQF_SHARED */ + +/** + * Per-session memory descriptor mapping table sizes + */ +#define MALI_MEM_DESCRIPTORS_INIT 64 +#define MALI_MEM_DESCRIPTORS_MAX 65536 + +/** + * Used to disallow more than one core to run a MMU at the same time + * + * @note This value is hardwired into some systems' configuration files, + * which \em might not be a header file (e.g. some external data configuration + * file). Therefore, if this value is modified, its occurance must be + * \b manually checked for in the entire driver source tree. + */ +#define MALI_MMU_DISALLOW_PARALLELL_WORK_OF_MALI_CORES 1 + +#define MALI_INVALID_PAGE ((u32)(~0)) + +/** + * + */ +typedef enum mali_mmu_entry_flags +{ + MALI_MMU_FLAGS_PRESENT = 0x01, + MALI_MMU_FLAGS_READ_PERMISSION = 0x02, + MALI_MMU_FLAGS_WRITE_PERMISSION = 0x04, + MALI_MMU_FLAGS_MASK = 0x07 +} mali_mmu_entry_flags; + +/** + * MMU register numbers + * Used in the register read/write routines. + * See the hardware documentation for more information about each register + */ +typedef enum mali_mmu_register { + MALI_MMU_REGISTER_DTE_ADDR = 0x0000, /**< Current Page Directory Pointer */ + MALI_MMU_REGISTER_STATUS = 0x0001, /**< Status of the MMU */ + MALI_MMU_REGISTER_COMMAND = 0x0002, /**< Command register, used to control the MMU */ + MALI_MMU_REGISTER_PAGE_FAULT_ADDR = 0x0003, /**< Logical address of the last page fault */ + MALI_MMU_REGISTER_ZAP_ONE_LINE = 0x004, /**< Used to invalidate the mapping of a single page from the MMU */ + MALI_MMU_REGISTER_INT_RAWSTAT = 0x0005, /**< Raw interrupt status, all interrupts visible */ + MALI_MMU_REGISTER_INT_CLEAR = 0x0006, /**< Indicate to the MMU that the interrupt has been received */ + MALI_MMU_REGISTER_INT_MASK = 0x0007, /**< Enable/disable types of interrupts */ + MALI_MMU_REGISTER_INT_STATUS = 0x0008 /**< Interrupt status based on the mask */ +} mali_mmu_register; + +/** + * MMU interrupt register bits + * Each cause of the interrupt is reported + * through the (raw) interrupt status registers. + * Multiple interrupts can be pending, so multiple bits + * can be set at once. + */ +typedef enum mali_mmu_interrupt +{ + MALI_MMU_INTERRUPT_PAGE_FAULT = 0x01, /**< A page fault occured */ + MALI_MMU_INTERRUPT_READ_BUS_ERROR = 0x02 /**< A bus read error occured */ +} mali_mmu_interrupt; + +/** + * MMU commands + * These are the commands that can be sent + * to the MMU unit. + */ +typedef enum mali_mmu_command +{ + MALI_MMU_COMMAND_ENABLE_PAGING = 0x00, /**< Enable paging (memory translation) */ + MALI_MMU_COMMAND_DISABLE_PAGING = 0x01, /**< Disable paging (memory translation) */ + MALI_MMU_COMMAND_ENABLE_STALL = 0x02, /**< Enable stall on page fault */ + MALI_MMU_COMMAND_DISABLE_STALL = 0x03, /**< Disable stall on page fault */ + MALI_MMU_COMMAND_ZAP_CACHE = 0x04, /**< Zap the entire page table cache */ + MALI_MMU_COMMAND_PAGE_FAULT_DONE = 0x05, /**< Page fault processed */ + MALI_MMU_COMMAND_SOFT_RESET = 0x06 /**< Reset the MMU back to power-on settings */ +} mali_mmu_command; + +typedef enum mali_mmu_status_bits +{ + MALI_MMU_STATUS_BIT_PAGING_ENABLED = 1 << 0, + MALI_MMU_STATUS_BIT_PAGE_FAULT_ACTIVE = 1 << 1, + MALI_MMU_STATUS_BIT_STALL_ACTIVE = 1 << 2, + MALI_MMU_STATUS_BIT_IDLE = 1 << 3, + MALI_MMU_STATUS_BIT_REPLAY_BUFFER_EMPTY = 1 << 4, + MALI_MMU_STATUS_BIT_PAGE_FAULT_IS_WRITE = 1 << 5, +} mali_mmu_status_bits; + +/** + * Defintion of the type used to represent memory used by a session. + * Containts the pointer to the huge user space virtual memory area + * used to access the Mali memory. + */ +typedef struct memory_session +{ + _mali_osk_lock_t *lock; /**< Lock protecting the vm manipulation */ + + u32 mali_base_address; /**< Mali virtual memory area used by this session */ + mali_descriptor_mapping * descriptor_mapping; /**< Mapping between userspace descriptors and our pointers */ + + u32 page_directory; /**< Physical address of the memory session's page directory */ + + mali_io_address page_directory_mapped; /**< Pointer to the mapped version of the page directory into the kernel's address space */ + mali_io_address page_entries_mapped[1024]; /**< Pointers to the page tables which exists in the page directory mapped into the kernel's address space */ + u32 page_entries_usage_count[1024]; /**< Tracks usage count of the page table pages, so they can be releases on the last reference */ + + _mali_osk_list_t active_mmus; /**< The MMUs in this session, in increasing order of ID (so we can lock them in the correct order when necessary) */ + _mali_osk_list_t memory_head; /**< Track all the memory allocated in this session, for freeing on abnormal termination */ +} memory_session; + +typedef struct mali_kernel_memory_mmu_idle_callback +{ + _mali_osk_list_t link; + void (*callback)(void*); + void * callback_argument; +} mali_kernel_memory_mmu_idle_callback; + +/** + * Definition of the MMU struct + * Used to track a MMU unit in the system. + * Contains information about the mapping of the registers + */ +typedef struct mali_kernel_memory_mmu +{ + int id; /**< ID of the MMU, no duplicate IDs may exist on the system */ + const char * description; /**< Description text received from the resource manager to help identify the resource for people */ + int irq_nr; /**< IRQ number */ + u32 base; /**< Physical address of the registers */ + mali_io_address mapped_registers; /**< Virtual mapping of the registers */ + u32 mapping_size; /**< Size of registers in bytes */ + _mali_osk_list_t list; /**< Used to link multiple MMU's into a list */ + _mali_osk_irq_t *irq; + u32 flags; /**< Used to store if there is something special with this mmu. */ + + _mali_osk_lock_t *lock; /**< Lock protecting access to the usage fields */ + /* usage fields */ + memory_session * active_session; /**< Active session, NULL if no session is active */ + u32 usage_count; /**< Number of nested activations of the active session */ + _mali_osk_list_t callbacks; /**< Callback registered for MMU idle notification */ + + int in_page_fault_handler; + + _mali_osk_list_t session_link; +} mali_kernel_memory_mmu; + +typedef struct dedicated_memory_info +{ + u32 base; + u32 size; + struct dedicated_memory_info * next; +} dedicated_memory_info; + +/* types used for external_memory and ump_memory physical memory allocators, which are using the mali_allocation_engine */ +#if MALI_USE_UNIFIED_MEMORY_PROVIDER != 0 +typedef struct ump_mem_allocation +{ + mali_allocation_engine * engine; + mali_memory_allocation * descriptor; + u32 initial_offset; + u32 size_allocated; + ump_dd_handle ump_mem; +} ump_mem_allocation ; +#endif + +typedef struct external_mem_allocation +{ + mali_allocation_engine * engine; + mali_memory_allocation * descriptor; + u32 initial_offset; + u32 size; +} external_mem_allocation; + +/* + Subsystem interface implementation +*/ +/** + * Fixed block memory subsystem startup function. + * Called by the driver core when the driver is loaded. + * Registers the memory systems ioctl handler, resource handlers and memory map function with the core. + * + * @param id Identifier assigned by the core to the memory subsystem + * @return 0 on success, negative on error + */ +static _mali_osk_errcode_t mali_memory_core_initialize(mali_kernel_subsystem_identifier id); + +/** + * Fixed block memory subsystem shutdown function. + * Called by the driver core when the driver is unloaded. + * Cleans up + * @param id Identifier assigned by the core to the memory subsystem + */ +static void mali_memory_core_terminate(mali_kernel_subsystem_identifier id); + +/** + * MMU Memory load complete notification function. + * Called by the driver core when all drivers have loaded and all resources has been registered + * Builds the memory overall memory list + * @param id Identifier assigned by the core to the memory subsystem + * @return 0 on success, negative on error + */ +static _mali_osk_errcode_t mali_memory_core_load_complete(mali_kernel_subsystem_identifier id); + +/** + * Fixed block memory subsystem session begin notification + * Called by the core when a new session to the driver is started. + * Creates a memory session object and sets it as the subsystem slot data for this session + * @param slot Pointer to the slot to use for storing per-session data + * @return 0 on success, negative on error + */ +static _mali_osk_errcode_t mali_memory_core_session_begin(struct mali_session_data * mali_session_data, mali_kernel_subsystem_session_slot * slot, _mali_osk_notification_queue_t * queue); + +/** + * Fixed block memory subsystem session end notification + * Called by the core when a session to the driver has ended. + * Cleans up per session data, which includes checking and fixing memory leaks + * + * @param slot Pointer to the slot to use for storing per-session data + */ +static void mali_memory_core_session_end(struct mali_session_data * mali_session_data, mali_kernel_subsystem_session_slot * slot); + +/** + * Fixed block memory subsystem system info filler + * Called by the core when a system info update is needed + * We fill in info about all the memory types we have + * @param info Pointer to system info struct to update + * @return 0 on success, negative on error + */ +static _mali_osk_errcode_t mali_memory_core_system_info_fill(_mali_system_info* info); + +/* our registered resource handlers */ + +/** + * Fixed block memory subsystem's notification handler for MMU resource instances. + * Registered with the core during startup. + * Called by the core for each mmu described in the active architecture's config.h file. + * @param resource The resource to handle (type MMU) + * @return 0 if the MMU was found and initialized, negative on error + */ +static _mali_osk_errcode_t mali_memory_core_resource_mmu(_mali_osk_resource_t * resource); + +/** + * Fixed block memory subsystem's notification handler for FPGA_FRAMEWORK resource instances. + * Registered with the core during startup. + * Called by the core for each fpga framework described in the active architecture's config.h file. + * @param resource The resource to handle (type FPGA_FRAMEWORK) + * @return 0 if the FPGA framework was found and initialized, negative on error + */ +static _mali_osk_errcode_t mali_memory_core_resource_fpga(_mali_osk_resource_t * resource); + + +static _mali_osk_errcode_t mali_memory_core_resource_dedicated_memory(_mali_osk_resource_t * resource); +static _mali_osk_errcode_t mali_memory_core_resource_os_memory(_mali_osk_resource_t * resource); + +/** + * @brief Internal function for unmapping memory + * + * Worker function for unmapping memory from a user-process. We assume that the + * session/descriptor's lock was obtained before entry. For example, the + * wrapper _mali_ukk_mem_munmap() will lock the descriptor, then call this + * function to do the actual unmapping. mali_memory_core_session_end() could + * also call this directly (depending on compilation options), having locked + * the descriptor. + * + * @param args see _mali_uk_mem_munmap_s in "mali_uk_types.h" + * @return _MALI_OSK_ERR_OK on success, otherwise a suitable _mali_osk_errcode_t on failure. + */ +static void _mali_ukk_mem_munmap_internal( _mali_uk_mem_munmap_s *args ); + +/** + * The MMU interrupt handler + * Upper half of the MMU interrupt processing. + * Called by the kernel when the MMU has triggered an interrupt. + * The interrupt function supports IRQ sharing. So it'll probe the MMU in question + * @param irq The irq number (not used) + * @param dev_id Points to the MMU object being handled + * @param regs Registers of interrupted process (not used) + * @return Standard Linux interrupt result. + * Subset used by the driver is IRQ_HANDLED processed + * IRQ_NONE Not processed + */ +static _mali_osk_errcode_t mali_kernel_memory_mmu_interrupt_handler_upper_half(void * data); + +/** + * The MMU reset hander + * Bottom half of the MMU interrupt processing for page faults and bus errors + * @param work The item to operate on, NULL in our case + */ +static void mali_kernel_memory_mmu_interrupt_handler_bottom_half ( void *data ); + +/** + * Read MMU register value + * Reads the contents of the specified register. + * @param unit The MMU to read from + * @param reg The register to read + * @return The contents of the register + */ +static u32 mali_mmu_register_read(mali_kernel_memory_mmu * unit, mali_mmu_register reg); + +/** + * Write to a MMU register + * Writes the given value to the specified register + * @param unit The MMU to write to + * @param reg The register to write to + * @param val The value to write to the register + */ +static void mali_mmu_register_write(mali_kernel_memory_mmu * unit, mali_mmu_register reg, u32 val); + + +#if MALI_USE_UNIFIED_MEMORY_PROVIDER != 0 +static void ump_memory_release(void * ctx, void * handle); +static mali_physical_memory_allocation_result ump_memory_commit(void* ctx, mali_allocation_engine * engine, mali_memory_allocation * descriptor, u32* offset, mali_physical_memory_allocation * alloc_info); +#endif /* MALI_USE_UNIFIED_MEMORY_PROVIDER != 0*/ + + +static void external_memory_release(void * ctx, void * handle); +static mali_physical_memory_allocation_result external_memory_commit(void* ctx, mali_allocation_engine * engine, mali_memory_allocation * descriptor, u32* offset, mali_physical_memory_allocation * alloc_info); + + + + +/* nop functions */ + +/* mali address manager needs to allocate page tables on allocate, write to page table(s) on map, write to page table(s) and release page tables on release */ +static _mali_osk_errcode_t mali_address_manager_allocate(mali_memory_allocation * descriptor); /* validates the range, allocates memory for the page tables if needed */ +static _mali_osk_errcode_t mali_address_manager_map(mali_memory_allocation * descriptor, u32 offset, u32 *phys_addr, u32 size); +static void mali_address_manager_release(mali_memory_allocation * descriptor); + +static void mali_mmu_activate_address_space(mali_kernel_memory_mmu * mmu, u32 page_directory); + +_mali_osk_errcode_t mali_mmu_page_table_cache_create(void); +void mali_mmu_page_table_cache_destroy(void); + +_mali_osk_errcode_t mali_mmu_get_table_page(u32 *table_page, mali_io_address *mapping); +void mali_mmu_release_table_page(u32 pa); + +static _mali_osk_errcode_t mali_allocate_empty_page_directory(void); + +static void mali_free_empty_page_directory(void); + +static _mali_osk_errcode_t fill_page(mali_io_address mapping, u32 data); + +static _mali_osk_errcode_t mali_allocate_fault_flush_pages(void); + +static void mali_free_fault_flush_pages(void); + +static void mali_mmu_probe_irq_trigger(mali_kernel_memory_mmu * mmu); +static _mali_osk_errcode_t mali_mmu_probe_irq_acknowledge(mali_kernel_memory_mmu * mmu); + +/* MMU variables */ + +typedef struct mali_mmu_page_table_allocation +{ + _mali_osk_list_t list; + u32 * usage_map; + u32 usage_count; + u32 num_pages; + mali_page_table_block pages; +} mali_mmu_page_table_allocation; + +typedef struct mali_mmu_page_table_allocations +{ + _mali_osk_lock_t *lock; + _mali_osk_list_t partial; + _mali_osk_list_t full; + /* we never hold on to a empty allocation */ +} mali_mmu_page_table_allocations; + +/* Head of the list of MMUs */ +static _MALI_OSK_LIST_HEAD(mmu_head); + +/* the mmu page table cache */ +static struct mali_mmu_page_table_allocations page_table_cache; + +/* page fault queue flush helper pages + * note that the mapping pointers are currently unused outside of the initialization functions */ +static u32 mali_page_fault_flush_page_directory = MALI_INVALID_PAGE; +static mali_io_address mali_page_fault_flush_page_directory_mapping = NULL; +static u32 mali_page_fault_flush_page_table = MALI_INVALID_PAGE; +static mali_io_address mali_page_fault_flush_page_table_mapping = NULL; +static u32 mali_page_fault_flush_data_page = MALI_INVALID_PAGE; +static mali_io_address mali_page_fault_flush_data_page_mapping = NULL; + +/* an empty page directory (no address valid) which is active on any MMU not currently marked as in use */ +static u32 mali_empty_page_directory = MALI_INVALID_PAGE; + +/* + The fixed memory system's mali subsystem interface implementation. + We currently handle module and session life-time management. +*/ +struct mali_kernel_subsystem mali_subsystem_memory = +{ + mali_memory_core_initialize, /* startup */ + mali_memory_core_terminate, /* shutdown */ + mali_memory_core_load_complete, /* load_complete */ + mali_memory_core_system_info_fill, /* system_info_fill */ + mali_memory_core_session_begin, /* session_begin */ + mali_memory_core_session_end, /* session_end */ + NULL, /* broadcast_notification */ +#if MALI_STATE_TRACKING + NULL, /* dump_state */ +#endif +}; + +static mali_kernel_mem_address_manager mali_address_manager = +{ + mali_address_manager_allocate, /* allocate */ + mali_address_manager_release, /* release */ + mali_address_manager_map, /* map_physical */ + NULL /* unmap_physical not present*/ +}; + +static mali_kernel_mem_address_manager process_address_manager = +{ + _mali_osk_mem_mapregion_init, /* allocate */ + _mali_osk_mem_mapregion_term, /* release */ + _mali_osk_mem_mapregion_map, /* map_physical */ + _mali_osk_mem_mapregion_unmap /* unmap_physical */ +}; + +static mali_allocation_engine memory_engine = NULL; +static mali_physical_memory_allocator * physical_memory_allocators = NULL; + +static dedicated_memory_info * mem_region_registrations = NULL; + +/* Initialized when this subsystem is initialized. This is determined by the + * position in subsystems[], and so the value used to initialize this is + * determined at compile time */ +static mali_kernel_subsystem_identifier mali_subsystem_memory_id = (mali_kernel_subsystem_identifier)-1; + +/* called during module init */ +static _mali_osk_errcode_t mali_memory_core_initialize(mali_kernel_subsystem_identifier id) +{ + MALI_DEBUG_PRINT(2, ("MMU memory system initializing\n")); + + /* save our subsystem id for later for use in slot lookup during session activation */ + mali_subsystem_memory_id = id; + + _MALI_OSK_INIT_LIST_HEAD(&mmu_head); + + MALI_CHECK_NO_ERROR( mali_mmu_page_table_cache_create() ); + + /* register our handlers */ + MALI_CHECK_NO_ERROR( _mali_kernel_core_register_resource_handler(MMU, mali_memory_core_resource_mmu) ); + + MALI_CHECK_NO_ERROR( _mali_kernel_core_register_resource_handler(FPGA_FRAMEWORK, mali_memory_core_resource_fpga) ); + + MALI_CHECK_NO_ERROR( _mali_kernel_core_register_resource_handler(MEMORY, mali_memory_core_resource_dedicated_memory) ); + + MALI_CHECK_NO_ERROR( _mali_kernel_core_register_resource_handler(OS_MEMORY, mali_memory_core_resource_os_memory) ); + + memory_engine = mali_allocation_engine_create(&mali_address_manager, &process_address_manager); + MALI_CHECK_NON_NULL( memory_engine, _MALI_OSK_ERR_FAULT); + + MALI_SUCCESS; +} + +/* called if/when our module is unloaded */ +static void mali_memory_core_terminate(mali_kernel_subsystem_identifier id) +{ + mali_kernel_memory_mmu * mmu, *temp_mmu; + + MALI_DEBUG_PRINT(2, ("MMU memory system terminating\n")); + + /* loop over all MMU units and shut them down */ + _MALI_OSK_LIST_FOREACHENTRY(mmu, temp_mmu, &mmu_head, mali_kernel_memory_mmu, list) + { + /* reset to defaults */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_SOFT_RESET); + + /* unregister the irq */ + _mali_osk_irq_term(mmu->irq); + + /* remove from the list of MMU's on the system */ + _mali_osk_list_del(&mmu->list); + + /* release resources */ + _mali_osk_mem_unmapioregion(mmu->base, mmu->mapping_size, mmu->mapped_registers); + _mali_osk_mem_unreqregion(mmu->base, mmu->mapping_size); + _mali_osk_free(mmu); + } + + /* free global helper pages */ + mali_free_empty_page_directory(); + mali_free_fault_flush_pages(); + + /* destroy the page table cache before shutting down backends in case we have a page table leak to report */ + mali_mmu_page_table_cache_destroy(); + + while ( NULL != mem_region_registrations) + { + dedicated_memory_info * m; + m = mem_region_registrations; + mem_region_registrations = m->next; + _mali_osk_mem_unreqregion(m->base, m->size); + _mali_osk_free(m); + } + + while ( NULL != physical_memory_allocators) + { + mali_physical_memory_allocator * m; + m = physical_memory_allocators; + physical_memory_allocators = m->next; + m->destroy(m); + } + + if (NULL != memory_engine) + { + mali_allocation_engine_destroy(memory_engine); + memory_engine = NULL; + } + +} + +static _mali_osk_errcode_t mali_memory_core_session_begin(struct mali_session_data * mali_session_data, mali_kernel_subsystem_session_slot * slot, _mali_osk_notification_queue_t * queue) +{ + memory_session * session_data; + _mali_osk_errcode_t err; + int i; + mali_io_address pd_mapped; + + /* validate input */ + if (NULL == slot) + { + MALI_DEBUG_PRINT(1, ("NULL slot given to memory session begin\n")); + MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); + } + + if (NULL != *slot) + { + MALI_DEBUG_PRINT(1, ("The slot given to memory session begin already contains data")); + MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); + } + + MALI_DEBUG_PRINT(2, ("MMU session begin\n")); + + /* create the session data object */ + session_data = _mali_osk_calloc(1, sizeof(memory_session)); + MALI_CHECK_NON_NULL( session_data, _MALI_OSK_ERR_NOMEM ); + + /* create descriptor mapping table */ + session_data->descriptor_mapping = mali_descriptor_mapping_create(MALI_MEM_DESCRIPTORS_INIT, MALI_MEM_DESCRIPTORS_MAX); + + if (NULL == session_data->descriptor_mapping) + { + _mali_osk_free(session_data); + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + err = mali_mmu_get_table_page(&session_data->page_directory, &pd_mapped); + + session_data->page_directory_mapped = pd_mapped; + if (_MALI_OSK_ERR_OK != err) + { + mali_descriptor_mapping_destroy(session_data->descriptor_mapping); + _mali_osk_free(session_data); + MALI_ERROR(err); + } + MALI_DEBUG_ASSERT_POINTER( session_data->page_directory_mapped ); + + MALI_DEBUG_PRINT(2, ("Page directory for session 0x%x placed at physical address 0x%08X\n", mali_session_data, session_data->page_directory)); + + for (i = 0; i < MALI_MMU_PAGE_SIZE/4; i++) + { + /* mark each page table as not present */ + _mali_osk_mem_iowrite32(session_data->page_directory_mapped, sizeof(u32) * i, 0); + } + + /* page_table_mapped[] is already set to NULL by _mali_osk_calloc call */ + + _MALI_OSK_INIT_LIST_HEAD(&session_data->active_mmus); + session_data->lock = _mali_osk_lock_init( _MALI_OSK_LOCKFLAG_ORDERED | _MALI_OSK_LOCKFLAG_ONELOCK | _MALI_OSK_LOCKFLAG_NONINTERRUPTABLE, 0, 128); + if (NULL == session_data->lock) + { + mali_mmu_release_table_page(session_data->page_directory); + mali_descriptor_mapping_destroy(session_data->descriptor_mapping); + _mali_osk_free(session_data); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + /* Init the session's memory allocation list */ + _MALI_OSK_INIT_LIST_HEAD( &session_data->memory_head ); + + *slot = session_data; /* slot will point to our data object */ + MALI_DEBUG_PRINT(2, ("MMU session begin: success\n")); + MALI_SUCCESS; +} + +static void descriptor_table_cleanup_callback(int descriptor_id, void* map_target) +{ + mali_memory_allocation * descriptor; + + descriptor = (mali_memory_allocation*)map_target; + + MALI_DEBUG_PRINT(1, ("Cleanup of descriptor %d mapping to 0x%x in descriptor table\n", descriptor_id, map_target)); + MALI_DEBUG_ASSERT(descriptor); + + mali_allocation_engine_release_memory(memory_engine, descriptor); + _mali_osk_free(descriptor); +} + +static void mali_memory_core_session_end(struct mali_session_data * mali_session_data, mali_kernel_subsystem_session_slot * slot) +{ + memory_session * session_data; + int i; + const int num_page_table_entries = sizeof(session_data->page_entries_mapped) / sizeof(session_data->page_entries_mapped[0]); + + MALI_DEBUG_PRINT(2, ("MMU session end\n")); + + /* validate input */ + if (NULL == slot) + { + MALI_DEBUG_PRINT(1, ("NULL slot given to memory session begin\n")); + return; + } + + session_data = (memory_session *)*slot; + + if (NULL == session_data) + { + MALI_DEBUG_PRINT(1, ("No session data found during session end\n")); + return; + } + /* Lock the session so we can modify the memory list */ + _mali_osk_lock_wait( session_data->lock, _MALI_OSK_LOCKMODE_RW ); + /* Noninterruptable spinlock type, so must always have locked. Checking should've been done in OSK function. */ + +#ifndef MALI_UKK_HAS_IMPLICIT_MMAP_CLEANUP +#if _MALI_OSK_SPECIFIC_INDIRECT_MMAP +#error Indirect MMAP specified, but UKK does not have implicit MMAP cleanup. Current implementation does not handle this. +#else + + /* Free all memory engine allocations */ + if (0 == _mali_osk_list_empty(&session_data->memory_head)) + { + mali_memory_allocation *descriptor; + mali_memory_allocation *temp; + _mali_uk_mem_munmap_s unmap_args; + + MALI_DEBUG_PRINT(1, ("Memory found on session usage list during session termination\n")); + + unmap_args.ctx = mali_session_data; + + /* use the 'safe' list iterator, since freeing removes the active block from the list we're iterating */ + _MALI_OSK_LIST_FOREACHENTRY(descriptor, temp, &session_data->memory_head, mali_memory_allocation, list) + { + MALI_DEBUG_PRINT(4, ("Freeing block with mali address 0x%x size %d mapped in user space at 0x%x\n", + descriptor->mali_address, descriptor->size, descriptor->size, descriptor->mapping) + ); + /* ASSERT that the descriptor's lock references the correct thing */ + MALI_DEBUG_ASSERT( descriptor->lock == session_data->lock ); + /* Therefore, we have already locked the descriptor */ + + unmap_args.size = descriptor->size; + unmap_args.mapping = descriptor->mapping; + unmap_args.cookie = (u32)descriptor; + + /* + * This removes the descriptor from the list, and frees the descriptor + * + * Does not handle the _MALI_OSK_SPECIFIC_INDIRECT_MMAP case, since + * the only OS we are aware of that requires indirect MMAP also has + * implicit mmap cleanup. + */ + _mali_ukk_mem_munmap_internal( &unmap_args ); + } + } + + /* Assert that we really did free everything */ + MALI_DEBUG_ASSERT( _mali_osk_list_empty(&session_data->memory_head) ); +#endif /* _MALI_OSK_SPECIFIC_INDIRECT_MMAP */ +#endif /* MALI_UKK_HAS_IMPLICIT_MMAP_CLEANUP */ + + if (NULL != session_data->descriptor_mapping) + { + mali_descriptor_mapping_call_for_each(session_data->descriptor_mapping, descriptor_table_cleanup_callback); + mali_descriptor_mapping_destroy(session_data->descriptor_mapping); + session_data->descriptor_mapping = NULL; + } + + for (i = 0; i < num_page_table_entries; i++) + { + /* free PTE memory */ + if (session_data->page_directory_mapped && (_mali_osk_mem_ioread32(session_data->page_directory_mapped, sizeof(u32)*i) & MALI_MMU_FLAGS_PRESENT)) + { + mali_mmu_release_table_page( _mali_osk_mem_ioread32(session_data->page_directory_mapped, i*sizeof(u32)) & ~MALI_MMU_FLAGS_MASK); + _mali_osk_mem_iowrite32(session_data->page_directory_mapped, i * sizeof(u32), 0); + } + } + + if (MALI_INVALID_PAGE != session_data->page_directory) + { + mali_mmu_release_table_page(session_data->page_directory); + session_data->page_directory = MALI_INVALID_PAGE; + } + + _mali_osk_lock_signal( session_data->lock, _MALI_OSK_LOCKMODE_RW ); + + /** + * @note Could the VMA close handler mean that we use the session data after it was freed? + * In which case, would need to refcount the session data, and free on VMA close + */ + + /* Free the lock */ + _mali_osk_lock_term( session_data->lock ); + /* free the session data object */ + _mali_osk_free(session_data); + + /* clear our slot */ + *slot = NULL; + + return; +} + +static _mali_osk_errcode_t mali_allocate_empty_page_directory(void) +{ + _mali_osk_errcode_t err; + mali_io_address mapping; + + MALI_CHECK_NO_ERROR(mali_mmu_get_table_page(&mali_empty_page_directory, &mapping)); + + MALI_DEBUG_ASSERT_POINTER( mapping ); + + err = fill_page(mapping, 0); + if (_MALI_OSK_ERR_OK != err) + { + mali_mmu_release_table_page(mali_empty_page_directory); + mali_empty_page_directory = MALI_INVALID_PAGE; + } + return err; +} + +static void mali_free_empty_page_directory(void) +{ + if (MALI_INVALID_PAGE != mali_empty_page_directory) + { + mali_mmu_release_table_page(mali_empty_page_directory); + mali_empty_page_directory = MALI_INVALID_PAGE; + } +} + +static _mali_osk_errcode_t fill_page(mali_io_address mapping, u32 data) +{ + int i; + MALI_DEBUG_ASSERT_POINTER( mapping ); + + for(i = 0; i < MALI_MMU_PAGE_SIZE/4; i++) + { + _mali_osk_mem_iowrite32( mapping, i * sizeof(u32), data); + } + MALI_SUCCESS; +} + +static _mali_osk_errcode_t mali_allocate_fault_flush_pages(void) +{ + _mali_osk_errcode_t err; + + err = mali_mmu_get_table_page(&mali_page_fault_flush_data_page, &mali_page_fault_flush_data_page_mapping); + if (_MALI_OSK_ERR_OK == err) + { + err = mali_mmu_get_table_page(&mali_page_fault_flush_page_table, &mali_page_fault_flush_page_table_mapping); + if (_MALI_OSK_ERR_OK == err) + { + err = mali_mmu_get_table_page(&mali_page_fault_flush_page_directory, &mali_page_fault_flush_page_directory_mapping); + if (_MALI_OSK_ERR_OK == err) + { + fill_page(mali_page_fault_flush_data_page_mapping, 0); + fill_page(mali_page_fault_flush_page_table_mapping, mali_page_fault_flush_data_page | MALI_MMU_FLAGS_WRITE_PERMISSION | MALI_MMU_FLAGS_READ_PERMISSION | MALI_MMU_FLAGS_PRESENT); + fill_page(mali_page_fault_flush_page_directory_mapping, mali_page_fault_flush_page_table | MALI_MMU_FLAGS_PRESENT); + MALI_SUCCESS; + } + mali_mmu_release_table_page(mali_page_fault_flush_page_table); + mali_page_fault_flush_page_table = MALI_INVALID_PAGE; + mali_page_fault_flush_page_table_mapping = NULL; + } + mali_mmu_release_table_page(mali_page_fault_flush_data_page); + mali_page_fault_flush_data_page = MALI_INVALID_PAGE; + mali_page_fault_flush_data_page_mapping = NULL; + } + MALI_ERROR(err); +} + +static void mali_free_fault_flush_pages(void) +{ + if (MALI_INVALID_PAGE != mali_page_fault_flush_page_directory) + { + mali_mmu_release_table_page(mali_page_fault_flush_page_directory); + mali_page_fault_flush_page_directory = MALI_INVALID_PAGE; + } + + if (MALI_INVALID_PAGE != mali_page_fault_flush_page_table) + { + mali_mmu_release_table_page(mali_page_fault_flush_page_table); + mali_page_fault_flush_page_table = MALI_INVALID_PAGE; + } + + if (MALI_INVALID_PAGE != mali_page_fault_flush_data_page) + { + mali_mmu_release_table_page(mali_page_fault_flush_data_page); + mali_page_fault_flush_data_page = MALI_INVALID_PAGE; + } +} + +static _mali_osk_errcode_t mali_memory_core_load_complete(mali_kernel_subsystem_identifier id) +{ + mali_kernel_memory_mmu * mmu, * temp_mmu; + + /* Report the allocators */ + mali_allocation_engine_report_allocators( physical_memory_allocators ); + + /* allocate the helper pages */ + MALI_CHECK_NO_ERROR( mali_allocate_empty_page_directory() ); + if (_MALI_OSK_ERR_OK != mali_allocate_fault_flush_pages()) + { + mali_free_empty_page_directory(); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + /* activate the empty page directory on all MMU's */ + _MALI_OSK_LIST_FOREACHENTRY(mmu, temp_mmu, &mmu_head, mali_kernel_memory_mmu, list) + { + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_DTE_ADDR, mali_empty_page_directory); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ENABLE_PAGING); + } + + MALI_DEBUG_PRINT(4, ("MMUs activated\n")); + /* the MMU system is now active */ + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t mali_memory_core_system_info_fill(_mali_system_info* info) +{ + _mali_mem_info * mem_info; + + /* make sure we won't leak any memory. It could also be that it's an uninitialized variable, but that would be a bug in the caller */ + MALI_DEBUG_ASSERT(NULL == info->mem_info); + + info->has_mmu = 1; + + mem_info = _mali_osk_calloc(1,sizeof(_mali_mem_info)); + MALI_CHECK_NON_NULL( mem_info, _MALI_OSK_ERR_NOMEM ); + + mem_info->size = 2048UL * 1024UL * 1024UL; + mem_info->maximum_order_supported = 30; + mem_info->flags = _MALI_CPU_WRITEABLE | _MALI_CPU_READABLE | _MALI_PP_READABLE | _MALI_PP_WRITEABLE |_MALI_GP_READABLE | _MALI_GP_WRITEABLE; + mem_info->identifier = 0; + + info->mem_info = mem_info; + + /* all OK */ + MALI_SUCCESS; +} + +static _mali_osk_errcode_t mali_memory_core_resource_mmu(_mali_osk_resource_t * resource) +{ + mali_kernel_memory_mmu * mmu; + + MALI_DEBUG_PRINT(4, ("MMU '%s' @ (0x%08X - 0x%08X)\n", + resource->description, resource->base, resource->base + MALI_MMU_REGISTERS_SIZE - 1 + )); + + if (NULL != mali_memory_core_mmu_lookup(resource->mmu_id)) + { + MALI_DEBUG_PRINT(1, ("Duplicate MMU ids found. The id %d is already in use\n", resource->mmu_id)); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + if (_MALI_OSK_ERR_OK != _mali_osk_mem_reqregion(resource->base, MALI_MMU_REGISTERS_SIZE, resource->description)) + { + /* specified addresses are already in used by another driver / the kernel */ + MALI_DEBUG_PRINT( + 1, ("Failed to request MMU '%s' register address space at (0x%08X - 0x%08X)\n", + resource->description, resource->base, resource->base + MALI_MMU_REGISTERS_SIZE - 1 + )); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + mmu = _mali_osk_calloc(1, sizeof(mali_kernel_memory_mmu)); + + if (NULL == mmu) + { + MALI_DEBUG_PRINT(1, ("Failed to allocate memory for handling a MMU unit")); + _mali_osk_mem_unreqregion(resource->base, MALI_MMU_REGISTERS_SIZE); + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + /* basic setup */ + _MALI_OSK_INIT_LIST_HEAD(&mmu->list); + + mmu->id = resource->mmu_id; + mmu->irq_nr = resource->irq; + mmu->flags = resource->flags; + mmu->base = resource->base; + mmu->mapping_size = MALI_MMU_REGISTERS_SIZE; + mmu->description = resource->description; /* no need to copy */ + _MALI_OSK_INIT_LIST_HEAD(&mmu->callbacks); + _MALI_OSK_INIT_LIST_HEAD(&mmu->session_link); + mmu->in_page_fault_handler = 0; + + mmu->lock = _mali_osk_lock_init( _MALI_OSK_LOCKFLAG_ORDERED | _MALI_OSK_LOCKFLAG_ONELOCK | _MALI_OSK_LOCKFLAG_NONINTERRUPTABLE, 0, 127-mmu->id); + if (NULL == mmu->lock) + { + MALI_DEBUG_PRINT(1, ("Failed to create mmu lock\n")); + _mali_osk_mem_unreqregion(mmu->base, mmu->mapping_size); + _mali_osk_free(mmu); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + /* map the registers */ + mmu->mapped_registers = _mali_osk_mem_mapioregion( mmu->base, mmu->mapping_size, mmu->description ); + if (NULL == mmu->mapped_registers) + { + /* failed to map the registers */ + MALI_DEBUG_PRINT(1, ("Failed to map MMU registers at 0x%08X\n", mmu->base)); + _mali_osk_lock_term(mmu->lock); + _mali_osk_mem_unreqregion(mmu->base, MALI_MMU_REGISTERS_SIZE); + _mali_osk_free(mmu); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + MALI_DEBUG_PRINT(4, ("MMU '%s' @ (0x%08X - 0x%08X) mapped to 0x%08X\n", + resource->description, resource->base, resource->base + MALI_MMU_REGISTERS_SIZE - 1, mmu->mapped_registers + )); + + /* setup MMU interrupt mask */ + /* set all values to known defaults */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_SOFT_RESET); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_MASK, MALI_MMU_INTERRUPT_PAGE_FAULT | MALI_MMU_INTERRUPT_READ_BUS_ERROR); + /* setup MMU page directory pointer */ + /* The mali_page_directory pointer is guaranteed to be 4kb aligned because we've used get_zeroed_page to accquire it */ + /* convert the kernel virtual address into a physical address and set */ + + /* add to our list of MMU's */ + _mali_osk_list_addtail(&mmu->list, &mmu_head); + + mmu->irq = _mali_osk_irq_init( + mmu->irq_nr, + mali_kernel_memory_mmu_interrupt_handler_upper_half, + mali_kernel_memory_mmu_interrupt_handler_bottom_half, + (_mali_osk_irq_trigger_t)mali_mmu_probe_irq_trigger, + (_mali_osk_irq_ack_t)mali_mmu_probe_irq_acknowledge, + mmu, + "mali_mmu_irq_handlers" + ); + if (NULL == mmu->irq) + { + _mali_osk_list_del(&mmu->list); + _mali_osk_lock_term(mmu->lock); + _mali_osk_mem_unmapioregion( mmu->base, mmu->mapping_size, mmu->mapped_registers ); + _mali_osk_mem_unreqregion(resource->base, MALI_MMU_REGISTERS_SIZE); + _mali_osk_free(mmu); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + /* set to a known state */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_SOFT_RESET); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_MASK, MALI_MMU_INTERRUPT_PAGE_FAULT | MALI_MMU_INTERRUPT_READ_BUS_ERROR); + + MALI_DEBUG_PRINT(2, ("MMU registered\n")); + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t mali_memory_core_resource_fpga(_mali_osk_resource_t * resource) +{ + mali_io_address mapping; + + MALI_DEBUG_PRINT(5, ("FPGA framework '%s' @ (0x%08X - 0x%08X)\n", + resource->description, resource->base, resource->base + sizeof(u32) * 2 - 1 + )); + + mapping = _mali_osk_mem_mapioregion(resource->base + 0x1000, sizeof(u32) * 2, "fpga framework"); + if (mapping) + { + MALI_DEBUG_CODE(u32 data = ) + _mali_osk_mem_ioread32(mapping, 0); + MALI_DEBUG_PRINT(2, ("FPGA framwork '%s' @ 0x%08X:\n", resource->description, resource->base)); + MALI_DEBUG_PRINT(2, ("\tBitfile date: %d%02d%02d_%02d%02d\n", + (data >> 20), + (data >> 16) & 0xF, + (data >> 11) & 0x1F, + (data >> 6) & 0x1F, + (data >> 0) & 0x3F)); + MALI_DEBUG_CODE(data = ) + _mali_osk_mem_ioread32(mapping, sizeof(u32)); + MALI_DEBUG_PRINT(2, ("\tBitfile SCCS rev: %d\n", data)); + + _mali_osk_mem_unmapioregion(resource->base + 0x1000, sizeof(u32) *2, mapping); + } + else MALI_DEBUG_PRINT(1, ("Failed to access FPGA framwork '%s' @ 0x%08X\n", resource->description, resource->base)); + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t mali_memory_core_resource_os_memory(_mali_osk_resource_t * resource) +{ + mali_physical_memory_allocator * allocator; + mali_physical_memory_allocator ** next_allocator_list; + + u32 alloc_order = resource->alloc_order; + + allocator = mali_os_allocator_create(resource->size, resource->cpu_usage_adjust, resource->description); + if (NULL == allocator) + { + MALI_DEBUG_PRINT(1, ("Failed to create OS memory allocator\n")); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + allocator->alloc_order = alloc_order; + + /* link in the allocator: insertion into ordered list + * resources of the same alloc_order will be Last-in-first */ + next_allocator_list = &physical_memory_allocators; + + while ( NULL != *next_allocator_list && + (*next_allocator_list)->alloc_order < alloc_order ) + { + next_allocator_list = &((*next_allocator_list)->next); + } + + allocator->next = (*next_allocator_list); + (*next_allocator_list) = allocator; + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t mali_memory_core_resource_dedicated_memory(_mali_osk_resource_t * resource) +{ + mali_physical_memory_allocator * allocator; + mali_physical_memory_allocator ** next_allocator_list; + dedicated_memory_info * cleanup_data; + + u32 alloc_order = resource->alloc_order; + + /* do the lowlevel linux operation first */ + + /* Request ownership of the memory */ + if (_MALI_OSK_ERR_OK != _mali_osk_mem_reqregion(resource->base, resource->size, resource->description)) + { + MALI_DEBUG_PRINT(1, ("Failed to request memory region %s (0x%08X - 0x%08X)\n", resource->description, resource->base, resource->base + resource->size - 1)); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + /* create generic block allocator object to handle it */ + allocator = mali_block_allocator_create(resource->base, resource->cpu_usage_adjust, resource->size, resource->description ); + + if (NULL == allocator) + { + MALI_DEBUG_PRINT(1, ("Memory bank registration failed\n")); + _mali_osk_mem_unreqregion(resource->base, resource->size); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + /* save lowlevel cleanup info */ + allocator->alloc_order = alloc_order; + + cleanup_data = _mali_osk_malloc(sizeof(dedicated_memory_info)); + + if (NULL == cleanup_data) + { + _mali_osk_mem_unreqregion(resource->base, resource->size); + allocator->destroy(allocator); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + cleanup_data->base = resource->base; + cleanup_data->size = resource->size; + + cleanup_data->next = mem_region_registrations; + mem_region_registrations = cleanup_data; + + /* link in the allocator: insertion into ordered list + * resources of the same alloc_order will be Last-in-first */ + next_allocator_list = &physical_memory_allocators; + + while ( NULL != *next_allocator_list && + (*next_allocator_list)->alloc_order < alloc_order ) + { + next_allocator_list = &((*next_allocator_list)->next); + } + + allocator->next = (*next_allocator_list); + (*next_allocator_list) = allocator; + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t mali_kernel_memory_mmu_interrupt_handler_upper_half(void * data) +{ + mali_kernel_memory_mmu * mmu; + u32 int_stat; + + if (mali_benchmark) MALI_SUCCESS; + + mmu = (mali_kernel_memory_mmu *)data; + + MALI_DEBUG_ASSERT_POINTER(mmu); + + /* check if it was our device which caused the interrupt (we could be sharing the IRQ line) */ + int_stat = mali_mmu_register_read(mmu, MALI_MMU_REGISTER_INT_STATUS); + if (0 == int_stat) + { + MALI_DEBUG_PRINT(5, ("Ignoring shared interrupt\n")); + MALI_ERROR(_MALI_OSK_ERR_FAULT); /* no bits set, we are sharing the IRQ line and someone else caused the interrupt */ + } + + MALI_DEBUG_PRINT(1, ("mali_kernel_memory_mmu_interrupt_handler_upper_half\n")); + + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_MASK, 0); + + mali_mmu_register_read(mmu, MALI_MMU_REGISTER_STATUS); + + if (int_stat & MALI_MMU_INTERRUPT_PAGE_FAULT) + { + MALI_PRINT(("Page fault on %s\n", mmu->description)); + + _mali_osk_irq_schedulework(mmu->irq); + } + if (int_stat & MALI_MMU_INTERRUPT_READ_BUS_ERROR) + { + MALI_PRINT(("Bus read error on %s\n", mmu->description)); + /* clear interrupt flag */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_CLEAR, MALI_MMU_INTERRUPT_READ_BUS_ERROR); + /* reenable it */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_MASK, mali_mmu_register_read(mmu, MALI_MMU_REGISTER_INT_MASK) | MALI_MMU_INTERRUPT_READ_BUS_ERROR); + } + + MALI_SUCCESS; +} + + +static void mali_kernel_mmu_bus_reset(mali_kernel_memory_mmu * mmu) +{ + +#if defined(USING_MALI200) + int i; + const int replay_buffer_check_interval = 10; /* must be below 1000 */ + const int replay_buffer_max_number_of_checks = 100; +#endif + + _mali_osk_lock_wait(mmu->lock, _MALI_OSK_LOCKMODE_RW); + /* add an extra reference while handling the page fault */ + mmu->usage_count++; + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); + + MALI_DEBUG_PRINT(4, ("Sending stop bus request to cores\n")); + /* request to stop the bus, but don't wait for it to actually stop */ + _mali_kernel_core_broadcast_subsystem_message(MMU_KILL_STEP1_STOP_BUS_FOR_ALL_CORES, (u32)mmu); + +#if defined(USING_MALI200) + /* no new request will come from any of the connected cores from now + * we must now flush the playback buffer for any requests queued already + */ + MALI_DEBUG_PRINT(4, ("Switching to the special page fault flush page directory\n")); + /* don't use the mali_mmu_activate_address_space function here as we can't stall the MMU */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_DTE_ADDR, mali_page_fault_flush_page_directory); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ZAP_CACHE); + /* resume the MMU */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_CLEAR, MALI_MMU_INTERRUPT_PAGE_FAULT); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_PAGE_FAULT_DONE); + /* the MMU will now play back all the requests, all going to our special page fault flush data page */ + + /* just to be safe, check that the playback buffer is empty before continuing */ + if (!mali_benchmark) { + for (i = 0; i < replay_buffer_max_number_of_checks; i++) + { + if (mali_mmu_register_read(mmu, MALI_MMU_REGISTER_STATUS) & MALI_MMU_STATUS_BIT_REPLAY_BUFFER_EMPTY) break; + _mali_osk_time_ubusydelay(replay_buffer_check_interval); + } + + MALI_DEBUG_PRINT_IF(1, i == replay_buffer_max_number_of_checks, ("MMU: %s: Failed to flush replay buffer on page fault\n", mmu->description)); + MALI_DEBUG_PRINT(1, ("Replay playback took %ld usec\n", i * replay_buffer_check_interval)); + } +#endif + /* notify all subsystems that the core should be reset once the bus is actually stopped */ + MALI_DEBUG_PRINT(4,("Sending job abort command to subsystems\n")); + _mali_kernel_core_broadcast_subsystem_message(MMU_KILL_STEP2_RESET_ALL_CORES_AND_ABORT_THEIR_JOBS, (u32)mmu); + + /* reprogram the MMU */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_SOFT_RESET); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_MASK, MALI_MMU_INTERRUPT_PAGE_FAULT | MALI_MMU_INTERRUPT_READ_BUS_ERROR); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_DTE_ADDR, mali_empty_page_directory); /* no session is active, so just activate the empty page directory */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ENABLE_PAGING); + + /* release the extra address space reference, will schedule */ + mali_memory_core_mmu_release_address_space_reference(mmu); + + /* resume normal operation */ + _mali_kernel_core_broadcast_subsystem_message(MMU_KILL_STEP3_CONTINUE_JOB_HANDLING, (u32)mmu); + MALI_DEBUG_PRINT(4, ("Page fault handling complete\n")); +} + +void mali_kernel_mmu_reset(void * input_mmu) +{ + mali_kernel_memory_mmu * mmu; + MALI_DEBUG_ASSERT_POINTER(input_mmu); + mmu = (mali_kernel_memory_mmu *)input_mmu; + + MALI_DEBUG_PRINT(4, ("Mali MMU: mali_kernel_mmu_reset: %s\n", mmu->description)); + + if ( 0 != mmu->in_page_fault_handler) + { + /* This is possible if the bus can never be stopped for some reason */ + MALI_PRINT_ERROR(("Stopping the Memory bus not possible. Mali reset could not be performed.")); + return; + } + _mali_osk_lock_wait(mmu->lock, _MALI_OSK_LOCKMODE_RW); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_SOFT_RESET); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_MASK, MALI_MMU_INTERRUPT_PAGE_FAULT | MALI_MMU_INTERRUPT_READ_BUS_ERROR); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_DTE_ADDR, mali_empty_page_directory); /* no session is active, so just activate the empty page directory */ + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ENABLE_PAGING); + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); + +} + +void mali_kernel_mmu_force_bus_reset(void * input_mmu) +{ + mali_kernel_memory_mmu * mmu; + MALI_DEBUG_ASSERT_POINTER(input_mmu); + mmu = (mali_kernel_memory_mmu *)input_mmu; + if ( 0 != mmu->in_page_fault_handler) + { + /* This is possible if the bus can never be stopped for some reason */ + MALI_PRINT_ERROR(("Stopping the Memory bus not possible. Mali reset could not be performed.")); + return; + } + MALI_DEBUG_PRINT(1, ("Mali MMU: Force_bus_reset.\n")); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_MASK, 0); + mali_kernel_mmu_bus_reset(mmu); +} + + +static void mali_kernel_memory_mmu_interrupt_handler_bottom_half(void * data) +{ + mali_kernel_memory_mmu * mmu; + u32 raw, fault_address, status; + + if (NULL == data) + { + MALI_PRINT_ERROR(("MMU IRQ work queue: NULL argument")); + return; /* Error */ + } + mmu = (mali_kernel_memory_mmu*)data; + + + MALI_DEBUG_PRINT(4, ("Locking subsystems\n")); + /* lock all subsystems */ + _mali_kernel_core_broadcast_subsystem_message(MMU_KILL_STEP0_LOCK_SUBSYSTEM, (u32)mmu); + + raw = mali_mmu_register_read(mmu, MALI_MMU_REGISTER_INT_RAWSTAT); + status = mali_mmu_register_read(mmu, MALI_MMU_REGISTER_STATUS); + + if ( (0==(raw & MALI_MMU_INTERRUPT_PAGE_FAULT)) && (0==(status & MALI_MMU_STATUS_BIT_PAGE_FAULT_ACTIVE)) ) + { + MALI_DEBUG_PRINT(1, ("MMU: Page fault bottom half: No Irq found.\n")); + MALI_DEBUG_PRINT(4, ("Unlocking subsystems")); + _mali_kernel_core_broadcast_subsystem_message(MMU_KILL_STEP4_UNLOCK_SUBSYSTEM, (u32)mmu); + return; + } + + mmu->in_page_fault_handler = 1; + + fault_address = mali_mmu_register_read(mmu, MALI_MMU_REGISTER_PAGE_FAULT_ADDR); + MALI_PRINT(("Page fault detected at 0x%x from bus id %d of type %s on %s\n", + (void*)fault_address, + (status >> 6) & 0x1F, + (status & 32) ? "write" : "read", + mmu->description) + ); + + if (NULL == mmu->active_session) + { + MALI_PRINT(("Spurious memory access detected from MMU %s\n", mmu->description)); + } + else + { + MALI_PRINT(("Active page directory at 0x%08X\n", mmu->active_session->page_directory)); + MALI_PRINT(("Info from page table for VA 0x%x:\n", (void*)fault_address)); + MALI_PRINT(("DTE entry: PTE at 0x%x marked as %s\n", + (void*)(_mali_osk_mem_ioread32(mmu->active_session->page_directory_mapped, + MALI_MMU_PDE_ENTRY(fault_address) * sizeof(u32)) & ~MALI_MMU_FLAGS_MASK), + _mali_osk_mem_ioread32(mmu->active_session->page_directory_mapped, + MALI_MMU_PDE_ENTRY(fault_address) * sizeof(u32)) & MALI_MMU_FLAGS_PRESENT ? "present" : "not present" + )); + + if (_mali_osk_mem_ioread32(mmu->active_session->page_directory_mapped, MALI_MMU_PDE_ENTRY(fault_address) * sizeof(u32)) & MALI_MMU_FLAGS_PRESENT) + { + mali_io_address pte; + u32 data; + pte = mmu->active_session->page_entries_mapped[MALI_MMU_PDE_ENTRY(fault_address)]; + data = _mali_osk_mem_ioread32(pte, MALI_MMU_PTE_ENTRY(fault_address) * sizeof(u32)); + MALI_PRINT(("PTE entry: Page at 0x%x, %s %s %s\n", + (void*)(data & ~MALI_MMU_FLAGS_MASK), + data & MALI_MMU_FLAGS_PRESENT ? "present" : "not present", + data & MALI_MMU_FLAGS_READ_PERMISSION ? "readable" : "", + data & MALI_MMU_FLAGS_WRITE_PERMISSION ? "writable" : "" + )); + } + else + { + MALI_PRINT(("PTE entry: Not present\n")); + } + } + + + mali_kernel_mmu_bus_reset(mmu); + + mmu->in_page_fault_handler = 0; + + /* unlock all subsystems */ + MALI_DEBUG_PRINT(4, ("Unlocking subsystems")); + _mali_kernel_core_broadcast_subsystem_message(MMU_KILL_STEP4_UNLOCK_SUBSYSTEM, (u32)mmu); + +} + + +static u32 mali_mmu_register_read(mali_kernel_memory_mmu * unit, mali_mmu_register reg) +{ + u32 val; + + if (mali_benchmark) return 0; + + val = _mali_osk_mem_ioread32(unit->mapped_registers, (u32)reg * sizeof(u32)); + + MALI_DEBUG_PRINT(6, ("mali_mmu_register_read addr:0x%04X val:0x%08x\n", (u32)reg * sizeof(u32),val)); + + return val; +} + +static void mali_mmu_register_write(mali_kernel_memory_mmu * unit, mali_mmu_register reg, u32 val) +{ + if (mali_benchmark) return; + + MALI_DEBUG_PRINT(6, ("mali_mmu_register_write addr:0x%04X val:0x%08x\n", (u32)reg * sizeof(u32), val)); + + _mali_osk_mem_iowrite32(unit->mapped_registers, (u32)reg * sizeof(u32), val); +} + + +#if MALI_USE_UNIFIED_MEMORY_PROVIDER != 0 +static mali_physical_memory_allocation_result ump_memory_commit(void* ctx, mali_allocation_engine * engine, mali_memory_allocation * descriptor, u32* offset, mali_physical_memory_allocation * alloc_info) +{ + ump_dd_handle ump_mem; + u32 nr_blocks; + u32 i; + ump_dd_physical_block * ump_blocks; + ump_mem_allocation *ret_allocation; + + MALI_DEBUG_ASSERT_POINTER(ctx); + MALI_DEBUG_ASSERT_POINTER(engine); + MALI_DEBUG_ASSERT_POINTER(descriptor); + MALI_DEBUG_ASSERT_POINTER(alloc_info); + + ret_allocation = _mali_osk_malloc( sizeof( ump_mem_allocation ) ); + if ( NULL==ret_allocation ) return MALI_MEM_ALLOC_INTERNAL_FAILURE; + + ump_mem = (ump_dd_handle)ctx; + + MALI_DEBUG_PRINT(4, ("In ump_memory_commit\n")); + + nr_blocks = ump_dd_phys_block_count_get(ump_mem); + + MALI_DEBUG_PRINT(4, ("Have %d blocks\n", nr_blocks)); + + if (nr_blocks == 0) + { + MALI_DEBUG_PRINT(1, ("No block count\n")); + _mali_osk_free( ret_allocation ); + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + + ump_blocks = _mali_osk_malloc(sizeof(*ump_blocks)*nr_blocks ); + if ( NULL==ump_blocks ) + { + _mali_osk_free( ret_allocation ); + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + + if (UMP_DD_INVALID == ump_dd_phys_blocks_get(ump_mem, ump_blocks, nr_blocks)) + { + _mali_osk_free(ump_blocks); + _mali_osk_free( ret_allocation ); + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + + /* Store away the initial offset for unmapping purposes */ + ret_allocation->initial_offset = *offset; + + for(i=0; i<nr_blocks; ++i) + { + MALI_DEBUG_PRINT(4, ("Mapping in 0x%08x size %d\n", ump_blocks[i].addr , ump_blocks[i].size)); + if (_MALI_OSK_ERR_OK != mali_allocation_engine_map_physical(engine, descriptor, *offset, ump_blocks[i].addr , 0, ump_blocks[i].size )) + { + u32 size_allocated = *offset - ret_allocation->initial_offset; + MALI_DEBUG_PRINT(1, ("Mapping of external memory failed\n")); + + /* unmap all previous blocks (if any) */ + mali_allocation_engine_unmap_physical(engine, descriptor, ret_allocation->initial_offset, size_allocated, (_mali_osk_mem_mapregion_flags_t)0 ); + + _mali_osk_free(ump_blocks); + _mali_osk_free(ret_allocation); + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + *offset += ump_blocks[i].size; + } + + if (descriptor->flags & MALI_MEMORY_ALLOCATION_FLAG_MAP_GUARD_PAGE) + { + /* Map in an extra virtual guard page at the end of the VMA */ + MALI_DEBUG_PRINT(4, ("Mapping in extra guard page\n")); + if (_MALI_OSK_ERR_OK != mali_allocation_engine_map_physical(engine, descriptor, *offset, ump_blocks[0].addr , 0, _MALI_OSK_MALI_PAGE_SIZE )) + { + u32 size_allocated = *offset - ret_allocation->initial_offset; + MALI_DEBUG_PRINT(1, ("Mapping of external memory (guard page) failed\n")); + + /* unmap all previous blocks (if any) */ + mali_allocation_engine_unmap_physical(engine, descriptor, ret_allocation->initial_offset, size_allocated, (_mali_osk_mem_mapregion_flags_t)0 ); + + _mali_osk_free(ump_blocks); + _mali_osk_free(ret_allocation); + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + *offset += _MALI_OSK_MALI_PAGE_SIZE; + } + + _mali_osk_free( ump_blocks ); + + ret_allocation->engine = engine; + ret_allocation->descriptor = descriptor; + ret_allocation->ump_mem = ump_mem; + ret_allocation->size_allocated = *offset - ret_allocation->initial_offset; + + alloc_info->ctx = NULL; + alloc_info->handle = ret_allocation; + alloc_info->next = NULL; + alloc_info->release = ump_memory_release; + + return MALI_MEM_ALLOC_FINISHED; +} + +static void ump_memory_release(void * ctx, void * handle) +{ + ump_dd_handle ump_mem; + ump_mem_allocation *allocation; + + allocation = (ump_mem_allocation *)handle; + + MALI_DEBUG_ASSERT_POINTER( allocation ); + + ump_mem = allocation->ump_mem; + + MALI_DEBUG_ASSERT(UMP_DD_HANDLE_INVALID!=ump_mem); + + /* At present, this is a no-op. But, it allows the mali_address_manager to + * do unmapping of a subrange in future. */ + mali_allocation_engine_unmap_physical( allocation->engine, + allocation->descriptor, + allocation->initial_offset, + allocation->size_allocated, + (_mali_osk_mem_mapregion_flags_t)0 + ); + _mali_osk_free( allocation ); + + + ump_dd_reference_release(ump_mem) ; + return; +} + +_mali_osk_errcode_t _mali_ukk_attach_ump_mem( _mali_uk_attach_ump_mem_s *args ) +{ + ump_dd_handle ump_mem; + mali_physical_memory_allocator external_memory_allocator; + memory_session * session_data; + mali_memory_allocation * descriptor; + int md; + + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + + session_data = (memory_session *)mali_kernel_session_manager_slot_get(args->ctx, mali_subsystem_memory_id); + MALI_CHECK_NON_NULL(session_data, _MALI_OSK_ERR_INVALID_ARGS); + + /* check arguments */ + /* NULL might be a valid Mali address */ + if ( ! args->size) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); + + /* size must be a multiple of the system page size */ + if ( args->size % _MALI_OSK_MALI_PAGE_SIZE ) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); + + MALI_DEBUG_PRINT(3, + ("Requested to map ump memory with secure id %d into virtual memory 0x%08X, size 0x%08X\n", + args->secure_id, args->mali_address, args->size)); + + ump_mem = ump_dd_handle_create_from_secure_id( (int)args->secure_id ) ; + + if ( UMP_DD_HANDLE_INVALID==ump_mem ) MALI_ERROR(_MALI_OSK_ERR_FAULT); + + descriptor = _mali_osk_calloc(1, sizeof(mali_memory_allocation)); + if (NULL == descriptor) + { + ump_dd_reference_release(ump_mem); + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + descriptor->size = args->size; + descriptor->mapping = NULL; + descriptor->mali_address = args->mali_address; + descriptor->mali_addr_mapping_info = (void*)session_data; + descriptor->process_addr_mapping_info = NULL; /* do not map to process address space */ + if (args->flags & _MALI_MAP_EXTERNAL_MAP_GUARD_PAGE) + { + descriptor->flags = MALI_MEMORY_ALLOCATION_FLAG_MAP_GUARD_PAGE; + } + _mali_osk_list_init( &descriptor->list ); + + if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_allocate_mapping(session_data->descriptor_mapping, descriptor, &md)) + { + ump_dd_reference_release(ump_mem); + _mali_osk_free(descriptor); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + external_memory_allocator.allocate = ump_memory_commit; + external_memory_allocator.allocate_page_table_block = NULL; + external_memory_allocator.ctx = ump_mem; + external_memory_allocator.name = "UMP Memory"; + external_memory_allocator.next = NULL; + + if (_MALI_OSK_ERR_OK != mali_allocation_engine_allocate_memory(memory_engine, descriptor, &external_memory_allocator, NULL)) + { + mali_descriptor_mapping_free(session_data->descriptor_mapping, md); + ump_dd_reference_release(ump_mem); + _mali_osk_free(descriptor); + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + args->cookie = md; + + MALI_DEBUG_PRINT(5,("Returning from UMP attach\n")); + + /* All OK */ + MALI_SUCCESS; +} + + +_mali_osk_errcode_t _mali_ukk_release_ump_mem( _mali_uk_release_ump_mem_s *args ) +{ + mali_memory_allocation * descriptor; + memory_session * session_data; + + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + + session_data = (memory_session *)mali_kernel_session_manager_slot_get(args->ctx, mali_subsystem_memory_id); + MALI_CHECK_NON_NULL(session_data, _MALI_OSK_ERR_INVALID_ARGS); + + if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_get(session_data->descriptor_mapping, args->cookie, (void**)&descriptor)) + { + MALI_DEBUG_PRINT(1, ("Invalid memory descriptor %d used to release ump memory\n", args->cookie)); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + mali_descriptor_mapping_free(session_data->descriptor_mapping, args->cookie); + mali_allocation_engine_release_memory(memory_engine, descriptor); + _mali_osk_free(descriptor); + + MALI_SUCCESS; + +} +#endif /* MALI_USE_UNIFIED_MEMORY_PROVIDER != 0 */ + + +static mali_physical_memory_allocation_result external_memory_commit(void* ctx, mali_allocation_engine * engine, mali_memory_allocation * descriptor, u32* offset, mali_physical_memory_allocation * alloc_info) +{ + u32 * data; + external_mem_allocation * ret_allocation; + + MALI_DEBUG_ASSERT_POINTER(ctx); + MALI_DEBUG_ASSERT_POINTER(engine); + MALI_DEBUG_ASSERT_POINTER(descriptor); + MALI_DEBUG_ASSERT_POINTER(alloc_info); + + ret_allocation = _mali_osk_malloc( sizeof(external_mem_allocation) ); + + if ( NULL == ret_allocation ) + { + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + + data = (u32*)ctx; + + ret_allocation->engine = engine; + ret_allocation->descriptor = descriptor; + ret_allocation->initial_offset = *offset; + + alloc_info->ctx = NULL; + alloc_info->handle = ret_allocation; + alloc_info->next = NULL; + alloc_info->release = external_memory_release; + + MALI_DEBUG_PRINT(3, ("External map: mapping phys 0x%08X at mali virtual address 0x%08X staring at offset 0x%08X length 0x%08X\n", data[0], descriptor->mali_address, *offset, data[1])); + + if (_MALI_OSK_ERR_OK != mali_allocation_engine_map_physical(engine, descriptor, *offset, data[0], 0, data[1])) + { + MALI_DEBUG_PRINT(1, ("Mapping of external memory failed\n")); + _mali_osk_free(ret_allocation); + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + *offset += data[1]; + + if (descriptor->flags & MALI_MEMORY_ALLOCATION_FLAG_MAP_GUARD_PAGE) + { + /* Map in an extra virtual guard page at the end of the VMA */ + MALI_DEBUG_PRINT(4, ("Mapping in extra guard page\n")); + if (_MALI_OSK_ERR_OK != mali_allocation_engine_map_physical(engine, descriptor, *offset, data[0], 0, _MALI_OSK_MALI_PAGE_SIZE)) + { + u32 size_allocated = *offset - ret_allocation->initial_offset; + MALI_DEBUG_PRINT(1, ("Mapping of external memory (guard page) failed\n")); + + /* unmap what we previously mapped */ + mali_allocation_engine_unmap_physical(engine, descriptor, ret_allocation->initial_offset, size_allocated, (_mali_osk_mem_mapregion_flags_t)0 ); + _mali_osk_free(ret_allocation); + return MALI_MEM_ALLOC_INTERNAL_FAILURE; + } + *offset += _MALI_OSK_MALI_PAGE_SIZE; + } + + ret_allocation->size = *offset - ret_allocation->initial_offset; + + return MALI_MEM_ALLOC_FINISHED; +} + +static void external_memory_release(void * ctx, void * handle) +{ + external_mem_allocation * allocation; + + allocation = (external_mem_allocation *) handle; + MALI_DEBUG_ASSERT_POINTER( allocation ); + + /* At present, this is a no-op. But, it allows the mali_address_manager to + * do unmapping of a subrange in future. */ + + mali_allocation_engine_unmap_physical( allocation->engine, + allocation->descriptor, + allocation->initial_offset, + allocation->size, + (_mali_osk_mem_mapregion_flags_t)0 + ); + + _mali_osk_free( allocation ); + + return; +} + +_mali_osk_errcode_t _mali_ukk_map_external_mem( _mali_uk_map_external_mem_s *args ) +{ + mali_physical_memory_allocator external_memory_allocator; + memory_session * session_data; + u32 info[2]; + mali_memory_allocation * descriptor; + int md; + + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + + session_data = (memory_session *)mali_kernel_session_manager_slot_get(args->ctx, mali_subsystem_memory_id); + MALI_CHECK_NON_NULL(session_data, _MALI_OSK_ERR_INVALID_ARGS); + + external_memory_allocator.allocate = external_memory_commit; + external_memory_allocator.allocate_page_table_block = NULL; + external_memory_allocator.ctx = &info[0]; + external_memory_allocator.name = "External Memory"; + external_memory_allocator.next = NULL; + + /* check arguments */ + /* NULL might be a valid Mali address */ + if ( ! args->size) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); + + /* size must be a multiple of the system page size */ + if ( args->size % _MALI_OSK_MALI_PAGE_SIZE ) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); + + MALI_DEBUG_PRINT(3, + ("Requested to map physical memory 0x%x-0x%x into virtual memory 0x%x\n", + (void*)args->phys_addr, + (void*)(args->phys_addr + args->size -1), + (void*)args->mali_address) + ); + + /* Validate the mali physical range */ + MALI_CHECK_NO_ERROR( mali_kernel_core_validate_mali_phys_range( args->phys_addr, args->size ) ); + + info[0] = args->phys_addr; + info[1] = args->size; + + descriptor = _mali_osk_calloc(1, sizeof(mali_memory_allocation)); + if (NULL == descriptor) MALI_ERROR(_MALI_OSK_ERR_NOMEM); + + descriptor->size = args->size; + descriptor->mapping = NULL; + descriptor->mali_address = args->mali_address; + descriptor->mali_addr_mapping_info = (void*)session_data; + descriptor->process_addr_mapping_info = NULL; /* do not map to process address space */ + descriptor->lock = NULL; + if (args->flags & _MALI_MAP_EXTERNAL_MAP_GUARD_PAGE) + { + descriptor->flags = MALI_MEMORY_ALLOCATION_FLAG_MAP_GUARD_PAGE; + } + _mali_osk_list_init( &descriptor->list ); + + if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_allocate_mapping(session_data->descriptor_mapping, descriptor, &md)) + { + _mali_osk_free(descriptor); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + if (_MALI_OSK_ERR_OK != mali_allocation_engine_allocate_memory(memory_engine, descriptor, &external_memory_allocator, NULL)) + { + mali_descriptor_mapping_free(session_data->descriptor_mapping, md); + _mali_osk_free(descriptor); + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + args->cookie = md; + + MALI_DEBUG_PRINT(5,("Returning from range_map_external_memory\n")); + + /* All OK */ + MALI_SUCCESS; +} + + +_mali_osk_errcode_t _mali_ukk_unmap_external_mem( _mali_uk_unmap_external_mem_s *args ) +{ + mali_memory_allocation * descriptor; + memory_session * session_data; + + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + + session_data = (memory_session *)mali_kernel_session_manager_slot_get(args->ctx, mali_subsystem_memory_id); + MALI_CHECK_NON_NULL(session_data, _MALI_OSK_ERR_INVALID_ARGS); + + if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_get(session_data->descriptor_mapping, args->cookie, (void**)&descriptor)) + { + MALI_DEBUG_PRINT(1, ("Invalid memory descriptor %d used to unmap external memory\n", args->cookie)); + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + mali_descriptor_mapping_free(session_data->descriptor_mapping, args->cookie); + mali_allocation_engine_release_memory(memory_engine, descriptor); + _mali_osk_free(descriptor); + + MALI_SUCCESS; +} + +_mali_osk_errcode_t _mali_ukk_init_mem( _mali_uk_init_mem_s *args ) +{ + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + + args->memory_size = 2 * 1024 * 1024 * 1024UL; /* 2GB address space */ + args->mali_address_base = 1 * 1024 * 1024 * 1024UL; /* staring at 1GB, causing this layout: (0-1GB unused)(1GB-3G usage by Mali)(3G-4G unused) */ + MALI_SUCCESS; +} + +_mali_osk_errcode_t _mali_ukk_term_mem( _mali_uk_term_mem_s *args ) +{ + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + MALI_SUCCESS; +} + +_mali_osk_errcode_t mali_mmu_page_table_cache_create(void) +{ + page_table_cache.lock = _mali_osk_lock_init( _MALI_OSK_LOCKFLAG_ORDERED | _MALI_OSK_LOCKFLAG_ONELOCK | _MALI_OSK_LOCKFLAG_NONINTERRUPTABLE, 0, 110); + MALI_CHECK_NON_NULL( page_table_cache.lock, _MALI_OSK_ERR_FAULT ); + _MALI_OSK_INIT_LIST_HEAD(&page_table_cache.partial); + _MALI_OSK_INIT_LIST_HEAD(&page_table_cache.full); + MALI_SUCCESS; +} + +void mali_mmu_page_table_cache_destroy(void) +{ + mali_mmu_page_table_allocation * alloc, *temp; + + _MALI_OSK_LIST_FOREACHENTRY(alloc, temp, &page_table_cache.partial, mali_mmu_page_table_allocation, list) + { + MALI_DEBUG_PRINT_IF(1, 0 != alloc->usage_count, ("Destroying page table cache while pages are tagged as in use. %d allocations still marked as in use.\n", alloc->usage_count)); + _mali_osk_list_del(&alloc->list); + alloc->pages.release(&alloc->pages); + _mali_osk_free(alloc->usage_map); + _mali_osk_free(alloc); + } + + MALI_DEBUG_PRINT_IF(1, 0 == _mali_osk_list_empty(&page_table_cache.full), ("Page table cache full list contains one or more elements \n")); + + _MALI_OSK_LIST_FOREACHENTRY(alloc, temp, &page_table_cache.full, mali_mmu_page_table_allocation, list) + { + MALI_DEBUG_PRINT(1, ("Destroy alloc 0x%08X with usage count %d\n", (u32)alloc, alloc->usage_count)); + _mali_osk_list_del(&alloc->list); + alloc->pages.release(&alloc->pages); + _mali_osk_free(alloc->usage_map); + _mali_osk_free(alloc); + } +} + +_mali_osk_errcode_t mali_mmu_get_table_page(u32 *table_page, mali_io_address *mapping) +{ + _mali_osk_lock_wait(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + + if (0 == _mali_osk_list_empty(&page_table_cache.partial)) + { + mali_mmu_page_table_allocation * alloc = _MALI_OSK_LIST_ENTRY(page_table_cache.partial.next, mali_mmu_page_table_allocation, list); + int page_number = _mali_osk_find_first_zero_bit(alloc->usage_map, alloc->num_pages); + MALI_DEBUG_PRINT(6, ("Partial page table allocation found, using page offset %d\n", page_number)); + _mali_osk_set_nonatomic_bit(page_number, alloc->usage_map); + alloc->usage_count++; + if (alloc->num_pages == alloc->usage_count) + { + /* full, move alloc to full list*/ + _mali_osk_list_move(&alloc->list, &page_table_cache.full); + } + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + + *table_page = (MALI_MMU_PAGE_SIZE * page_number) + alloc->pages.phys_base; + *mapping = (mali_io_address)((MALI_MMU_PAGE_SIZE * page_number) + (u32)alloc->pages.mapping); + MALI_DEBUG_PRINT(4, ("Page table allocated for VA=0x%08X, MaliPA=0x%08X\n", *mapping, *table_page )); + MALI_SUCCESS; + } + else + { + mali_mmu_page_table_allocation * alloc; + /* no free pages, allocate a new one */ + + alloc = (mali_mmu_page_table_allocation *)_mali_osk_calloc(1, sizeof(mali_mmu_page_table_allocation)); + if (NULL == alloc) + { + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + *table_page = MALI_INVALID_PAGE; + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + _MALI_OSK_INIT_LIST_HEAD(&alloc->list); + + if (_MALI_OSK_ERR_OK != mali_allocation_engine_allocate_page_tables(memory_engine, &alloc->pages, physical_memory_allocators)) + { + MALI_DEBUG_PRINT(1, ("No more memory for page tables\n")); + _mali_osk_free(alloc); + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + *table_page = MALI_INVALID_PAGE; + *mapping = NULL; + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + /* create the usage map */ + alloc->num_pages = alloc->pages.size / MALI_MMU_PAGE_SIZE; + alloc->usage_count = 1; + MALI_DEBUG_PRINT(3, ("New page table cache expansion, %d pages in new cache allocation\n", alloc->num_pages)); + alloc->usage_map = _mali_osk_calloc(1, ((alloc->num_pages + BITS_PER_LONG - 1) & ~(BITS_PER_LONG-1) / BITS_PER_LONG) * sizeof(unsigned long)); + if (NULL == alloc->usage_map) + { + MALI_DEBUG_PRINT(1, ("Failed to allocate memory to describe MMU page table cache usage\n")); + alloc->pages.release(&alloc->pages); + _mali_osk_free(alloc); + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + *table_page = MALI_INVALID_PAGE; + *mapping = NULL; + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + + /* clear memory allocation */ + fill_page(alloc->pages.mapping, 0); + + _mali_osk_set_nonatomic_bit(0, alloc->usage_map); + + _mali_osk_list_add(&alloc->list, &page_table_cache.partial); + + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + *table_page = alloc->pages.phys_base; /* return the first page */ + *mapping = alloc->pages.mapping; /* Mapping for first page */ + MALI_DEBUG_PRINT(4, ("Page table allocated for VA=0x%08X, MaliPA=0x%08X\n", *mapping, *table_page )); + MALI_SUCCESS; + } +} + +void mali_mmu_release_table_page(u32 pa) +{ + mali_mmu_page_table_allocation * alloc, * temp_alloc; + + MALI_DEBUG_PRINT_IF(1, pa & 4095, ("Bad page address 0x%x given to mali_mmu_release_table_page\n", (void*)pa)); + + MALI_DEBUG_PRINT(4, ("Releasing table page 0x%08X to the cache\n", pa)); + + _mali_osk_lock_wait(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + + /* find the entry this address belongs to */ + /* first check the partial list */ + _MALI_OSK_LIST_FOREACHENTRY(alloc, temp_alloc, &page_table_cache.partial, mali_mmu_page_table_allocation, list) + { + u32 start = alloc->pages.phys_base; + u32 last = start + (alloc->num_pages - 1) * MALI_MMU_PAGE_SIZE; + if (pa >= start && pa <= last) + { + MALI_DEBUG_ASSERT(0 != _mali_osk_test_bit((pa - start)/MALI_MMU_PAGE_SIZE, alloc->usage_map)); + _mali_osk_clear_nonatomic_bit((pa - start)/MALI_MMU_PAGE_SIZE, alloc->usage_map); + alloc->usage_count--; + + _mali_osk_memset((void*)( ((u32)alloc->pages.mapping) + (pa - start) ), 0, MALI_MMU_PAGE_SIZE); + + if (0 == alloc->usage_count) + { + /* empty, release whole page alloc */ + _mali_osk_list_del(&alloc->list); + alloc->pages.release(&alloc->pages); + _mali_osk_free(alloc->usage_map); + _mali_osk_free(alloc); + } + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + MALI_DEBUG_PRINT(4, ("(partial list)Released table page 0x%08X to the cache\n", pa)); + return; + } + } + + /* the check the full list */ + _MALI_OSK_LIST_FOREACHENTRY(alloc, temp_alloc, &page_table_cache.full, mali_mmu_page_table_allocation, list) + { + u32 start = alloc->pages.phys_base; + u32 last = start + (alloc->num_pages - 1) * MALI_MMU_PAGE_SIZE; + if (pa >= start && pa <= last) + { + _mali_osk_clear_nonatomic_bit((pa - start)/MALI_MMU_PAGE_SIZE, alloc->usage_map); + alloc->usage_count--; + + _mali_osk_memset((void*)( ((u32)alloc->pages.mapping) + (pa - start) ), 0, MALI_MMU_PAGE_SIZE); + + /* transfer to partial list */ + _mali_osk_list_move(&alloc->list, &page_table_cache.partial); + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); + MALI_DEBUG_PRINT(4, ("(full list)Released table page 0x%08X to the cache\n", pa)); + return; + } + } + + MALI_DEBUG_PRINT(1, ("pa 0x%x not found in the page table cache\n", (void*)pa)); + + _mali_osk_lock_signal(page_table_cache.lock, _MALI_OSK_LOCKMODE_RW); +} + +void* mali_memory_core_mmu_lookup(u32 id) +{ + mali_kernel_memory_mmu * mmu, * temp_mmu; + + /* find an MMU with a matching id */ + _MALI_OSK_LIST_FOREACHENTRY(mmu, temp_mmu, &mmu_head, mali_kernel_memory_mmu, list) + { + if (id == mmu->id) return mmu; + } + + /* not found */ + return NULL; +} + +void mali_mmu_activate_address_space(mali_kernel_memory_mmu * mmu, u32 page_directory) +{ + const int delay_in_usecs = 10; + const int max_loop_count = 10; + int i; + + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ENABLE_STALL); + + if (!mali_benchmark) { + for (i = 0; i < max_loop_count; ++i) + { + if (mali_mmu_register_read(mmu, MALI_MMU_REGISTER_STATUS) & MALI_MMU_STATUS_BIT_STALL_ACTIVE) break; + _mali_osk_time_ubusydelay(delay_in_usecs); + } + MALI_DEBUG_PRINT_IF(1, (max_loop_count == i), ("Stall request failed, swapping anyway\n")); + } + + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_DTE_ADDR, page_directory); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ZAP_CACHE); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_DISABLE_STALL); +} + +_mali_osk_errcode_t mali_memory_core_mmu_activate_page_table(void* mmu_ptr, struct mali_session_data * mali_session_data, void(*callback)(void*), void * callback_argument) +{ + memory_session * requested_memory_session; + _mali_osk_errcode_t err = _MALI_OSK_ERR_FAULT; + mali_kernel_memory_mmu * mmu; + + MALI_DEBUG_ASSERT_POINTER(mmu_ptr); + MALI_DEBUG_ASSERT_POINTER(mali_session_data); + + mmu = (mali_kernel_memory_mmu *)mmu_ptr; + + MALI_DEBUG_PRINT(4, ("Asked to activate page table for session 0x%x on MMU %s\n", mali_session_data, mmu->description)); + requested_memory_session = mali_kernel_session_manager_slot_get(mali_session_data, mali_subsystem_memory_id); + MALI_DEBUG_PRINT(5, ("Session 0x%x looked up as using memory session 0x%x\n", mali_session_data, requested_memory_session)); + + MALI_DEBUG_ASSERT_POINTER(requested_memory_session); + + MALI_DEBUG_PRINT(7, ("Taking locks\n")); + + _mali_osk_lock_wait(requested_memory_session->lock, _MALI_OSK_LOCKMODE_RW); + _mali_osk_lock_wait(mmu->lock, _MALI_OSK_LOCKMODE_RW); + if (0 == mmu->usage_count) + { + /* no session currently active, activate the requested session */ + MALI_DEBUG_ASSERT(NULL == mmu->active_session); + mmu->active_session = requested_memory_session; + mmu->usage_count = 1; + MALI_DEBUG_PRINT(4, ("MMU idle, activating page directory 0x%08X on MMU %s\n", requested_memory_session->page_directory, mmu->description)); + mali_mmu_activate_address_space(mmu, requested_memory_session->page_directory); + { + /* Insert mmu into the right place in the active_mmus list so that + * it is still sorted. The list must be sorted by ID so we can get + * the mutexes in the right order in + * _mali_ukk_mem_munmap_internal(). + */ + _mali_osk_list_t *entry; + for (entry = requested_memory_session->active_mmus.next; + entry != &requested_memory_session->active_mmus; + entry = entry->next) + { + mali_kernel_memory_mmu *temp = _MALI_OSK_LIST_ENTRY(entry, mali_kernel_memory_mmu, session_link); + if (mmu->id < temp->id) + break; + } + /* If we broke out, then 'entry' points to the list node of the + * first mmu with a greater ID; otherwise, it points to + * active_mmus. We want to add *before* this node. + */ + _mali_osk_list_addtail(&mmu->session_link, entry); + } + err = _MALI_OSK_ERR_OK; + } + + /* Allow two cores to run in parallel if they come from the same session */ + else if ( + (mmu->in_page_fault_handler == 0) && + (requested_memory_session == mmu->active_session ) && + (0==(MALI_MMU_DISALLOW_PARALLELL_WORK_OF_MALI_CORES & mmu->flags)) + ) + { + /* nested activation detected, just update the reference count */ + MALI_DEBUG_PRINT(4, ("Nested activation detected, %d previous activations found\n", mmu->usage_count)); + mmu->usage_count++; + err = _MALI_OSK_ERR_OK; + } + + else if (NULL != callback) + { + /* can't activate right now, notify caller on idle via callback */ + mali_kernel_memory_mmu_idle_callback * callback_object, * temp_callback_object; + int found = 0; + + MALI_DEBUG_PRINT(3, ("The MMU is busy and is using a different address space, callback given\n")); + /* check for existing registration */ + _MALI_OSK_LIST_FOREACHENTRY(callback_object, temp_callback_object, &mmu->callbacks, mali_kernel_memory_mmu_idle_callback, link) + { + if (callback_object->callback == callback) + { + found = 1; + break; + } + } + + if (found) + { + MALI_DEBUG_PRINT(5, ("Duplicate callback registration found, ignoring\n")); + /* callback already registered */ + err = _MALI_OSK_ERR_BUSY; + } + else + { + MALI_DEBUG_PRINT(5,("New callback, registering\n")); + /* register the new callback */ + callback_object = _mali_osk_malloc(sizeof(mali_kernel_memory_mmu_idle_callback)); + if (NULL != callback_object) + { + MALI_DEBUG_PRINT(7,("Callback struct setup\n")); + callback_object->callback = callback; + callback_object->callback_argument = callback_argument; + _mali_osk_list_addtail(&callback_object->link, &mmu->callbacks); + err = _MALI_OSK_ERR_BUSY; + } + } + } + + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); + _mali_osk_lock_signal(requested_memory_session->lock, _MALI_OSK_LOCKMODE_RW); + + MALI_ERROR(err); +} + +void mali_memory_core_mmu_release_address_space_reference(void* mmu_ptr) +{ + mali_kernel_memory_mmu_idle_callback * callback_object, * temp; + mali_kernel_memory_mmu * mmu; + memory_session * session; + + _MALI_OSK_LIST_HEAD(callbacks); + + MALI_DEBUG_ASSERT_POINTER(mmu_ptr); + mmu = (mali_kernel_memory_mmu *)mmu_ptr; + + session = mmu->active_session; + + /* support that we handle spurious page faults */ + if (NULL != session) + { + _mali_osk_lock_wait(session->lock, _MALI_OSK_LOCKMODE_RW); + } + + _mali_osk_lock_wait(mmu->lock, _MALI_OSK_LOCKMODE_RW); + MALI_DEBUG_PRINT(4, ("Deactivation of address space on MMU %s, %d references exists\n", mmu->description, mmu->usage_count)); + MALI_DEBUG_ASSERT(0 != mmu->usage_count); + mmu->usage_count--; + if (0 != mmu->usage_count) + { + MALI_DEBUG_PRINT(4, ("MMU still in use by this address space, %d references still exists\n", mmu->usage_count)); + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); + /* support that we handle spurious page faults */ + if (NULL != session) + { + _mali_osk_lock_signal(session->lock, _MALI_OSK_LOCKMODE_RW); + } + return; + } + + MALI_DEBUG_PRINT(4, ("Activating the empty page directory on %s\n", mmu->description)); + + /* last reference gone, deactivate current address space */ + mali_mmu_activate_address_space(mmu, mali_empty_page_directory); + + /* unlink from session */ + _mali_osk_list_delinit(&mmu->session_link); + /* remove the active session pointer */ + mmu->active_session = NULL; + + /* Notify all registered callbacks. + * We have to be clever here: + * We must call the callbacks with the spinlock unlocked and + * the callback list emptied to allow them to re-register. + * So we make a copy of the list, clears the list and then later call the callbacks on the local copy + */ + /* copy list */ + _MALI_OSK_INIT_LIST_HEAD(&callbacks); + _mali_osk_list_splice(&mmu->callbacks, &callbacks); + /* clear the original, allowing new registrations during the callback */ + _MALI_OSK_INIT_LIST_HEAD(&mmu->callbacks); + + /* end of mmu manipulation, so safe to unlock */ + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); + + /* then finally remove the (possible) session lock, supporting that no session was active (spurious page fault handling) */ + if (NULL != session) + { + _mali_osk_lock_signal(session->lock, _MALI_OSK_LOCKMODE_RW); + } + + _MALI_OSK_LIST_FOREACHENTRY(callback_object, temp, &callbacks, mali_kernel_memory_mmu_idle_callback, link) + { + MALI_DEBUG_ASSERT_POINTER(callback_object->callback); + (callback_object->callback)(callback_object->callback_argument); + _mali_osk_list_del(&callback_object->link); + _mali_osk_free(callback_object); + } +} + +void mali_memory_core_mmu_unregister_callback(void* mmu_ptr, void(*callback)(void*)) +{ + mali_kernel_memory_mmu_idle_callback * callback_object, * temp_callback_object; + mali_kernel_memory_mmu * mmu; + MALI_DEBUG_ASSERT_POINTER(mmu_ptr); + + MALI_DEBUG_ASSERT_POINTER(callback); + MALI_DEBUG_ASSERT_POINTER(mmu_ptr); + + mmu = (mali_kernel_memory_mmu *)mmu_ptr; + + _mali_osk_lock_wait(mmu->lock, _MALI_OSK_LOCKMODE_RW); + _MALI_OSK_LIST_FOREACHENTRY(callback_object, temp_callback_object, &mmu->callbacks, mali_kernel_memory_mmu_idle_callback, link) + { + MALI_DEBUG_ASSERT_POINTER(callback_object->callback); + if (callback_object->callback == callback) + { + _mali_osk_list_del(&callback_object->link); + _mali_osk_free(callback_object); + break; + } + } + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); +} + +static _mali_osk_errcode_t mali_address_manager_allocate(mali_memory_allocation * descriptor) +{ + /* allocate page tables, if needed */ + int i; + const int first_pde_idx = MALI_MMU_PDE_ENTRY(descriptor->mali_address); + int last_pde_idx; + memory_session * session_data; +#if defined USING_MALI400_L2_CACHE + int has_active_mmus = 0; + int page_dir_updated = 0; +#endif + + + if (descriptor->flags & MALI_MEMORY_ALLOCATION_FLAG_MAP_GUARD_PAGE) + { + last_pde_idx = MALI_MMU_PDE_ENTRY(descriptor->mali_address + _MALI_OSK_MALI_PAGE_SIZE + descriptor->size - 1); + } + else + { + last_pde_idx = MALI_MMU_PDE_ENTRY(descriptor->mali_address + descriptor->size - 1); + } + + session_data = (memory_session*)descriptor->mali_addr_mapping_info; + MALI_DEBUG_ASSERT_POINTER(session_data); + + MALI_DEBUG_PRINT(4, ("allocating page tables for Mali virtual address space 0x%08X to 0x%08X\n", descriptor->mali_address, descriptor->mali_address + descriptor->size - 1)); + +#if defined USING_MALI400_L2_CACHE + if (0 == _mali_osk_list_empty(&session_data->active_mmus)) + { + /* + * We have active MMUs, so we are probably in the process of alocating more memory for a suspended GP job (PLBU heap) + * From Mali-400 MP r1p0, MMU page directory/tables are also cached by the Mali L2 cache, thus we need to invalidate the page directory + * from the L2 cache if we add new page directory entries (PDEs) to the page directory. + * We only need to do this when we have an active MMU, because we otherwise invalidate the entire Mali L2 cache before at job start + */ + has_active_mmus = 1; + } +#endif + + for (i = first_pde_idx; i <= last_pde_idx; i++) + { + if ( 0 == (_mali_osk_mem_ioread32(session_data->page_directory_mapped, i * sizeof(u32)) & MALI_MMU_FLAGS_PRESENT) ) + { + u32 pte_phys; + mali_io_address pte_mapped; + _mali_osk_errcode_t err; + + /* allocate a new page table */ + MALI_DEBUG_ASSERT(0 == session_data->page_entries_usage_count[i]); + MALI_DEBUG_ASSERT(NULL == session_data->page_entries_mapped[i]); + + err = mali_mmu_get_table_page(&pte_phys, &pte_mapped); + if (_MALI_OSK_ERR_OK == err) + { + session_data->page_entries_mapped[i] = pte_mapped; + MALI_DEBUG_ASSERT_POINTER( session_data->page_entries_mapped[i] ); + + _mali_osk_mem_iowrite32(session_data->page_directory_mapped, i * sizeof(u32), pte_phys | MALI_MMU_FLAGS_PRESENT); /* mark page table as present */ + + /* update usage count */ + session_data->page_entries_usage_count[i]++; +#if defined USING_MALI400_L2_CACHE + page_dir_updated = 1; +#endif + continue; /* continue loop */ + } + + MALI_DEBUG_PRINT(1, ("Page table alloc failed\n")); + break; /* abort loop, failed to allocate one or more page tables */ + } + else + { + session_data->page_entries_usage_count[i]++; + } + } + + if (i <= last_pde_idx) + { + /* one or more pages could not be allocated, release reference count for the ones we added one for */ + /* adjust for the one which caused the for loop to be aborted */ + i--; + + while (i >= first_pde_idx) + { + MALI_DEBUG_ASSERT(0 != session_data->page_entries_usage_count[i]); + session_data->page_entries_usage_count[i]--; + if (0 == session_data->page_entries_usage_count[i]) + { + /* last reference removed */ + mali_mmu_release_table_page(MALI_MMU_ENTRY_ADDRESS(_mali_osk_mem_ioread32(session_data->page_directory_mapped, i * sizeof(u32)))); + session_data->page_entries_mapped[i] = NULL; + _mali_osk_mem_iowrite32(session_data->page_directory_mapped, i * sizeof(u32), 0); /* mark as not present in the page directory */ + } + i--; + } + + MALI_ERROR(_MALI_OSK_ERR_NOMEM); + } + +#if defined USING_MALI400_L2_CACHE + if (1 == has_active_mmus && 1 == page_dir_updated) + { + /* + * We have updated the page directory and have an active MMU using it, so invalidate it in the Mali L2 cache. + */ + mali_kernel_l2_cache_invalidate_page(session_data->page_directory); + } +#endif + + /* all OK */ + MALI_SUCCESS; +} + +static void mali_address_manager_release(mali_memory_allocation * descriptor) +{ + int first_pde_idx; + int last_pde_idx; + memory_session * session_data; + u32 mali_address; + u32 mali_address_end; + u32 left; + int i; +#if defined USING_MALI400_L2_CACHE + int has_active_mmus = 0; + int page_dir_updated = 0; +#endif + + MALI_DEBUG_ASSERT_POINTER(descriptor); + session_data = (memory_session*)descriptor->mali_addr_mapping_info; + MALI_DEBUG_ASSERT_POINTER(session_data); + MALI_DEBUG_ASSERT_POINTER(session_data->page_directory_mapped); + + mali_address = descriptor->mali_address; + mali_address_end = descriptor->mali_address + descriptor->size; + left = descriptor->size; + + first_pde_idx = MALI_MMU_PDE_ENTRY(mali_address); + last_pde_idx = MALI_MMU_PDE_ENTRY(mali_address_end - 1); + + MALI_DEBUG_PRINT(3, ("Zapping Mali MMU table for address 0x%08X size 0x%08X\n", mali_address, left)); + MALI_DEBUG_PRINT(4, ("Zapping PDE %d through %d\n", first_pde_idx, last_pde_idx)); + +#if defined USING_MALI400_L2_CACHE + if (0 == _mali_osk_list_empty(&session_data->active_mmus)) + { + /* + * From Mali-400 MP r1p0, MMU page directory/tables are also cached by the Mali L2 cache, thus we need to invalidate the page tables + * from the L2 cache to ensure that the memory is unmapped. + * We only need to do this when we have an active MMU, because we otherwise invalidate the entire Mali L2 cache before at job start + */ + has_active_mmus = 1; + } +#endif + + + for (i = first_pde_idx; i <= last_pde_idx; i++) + { + const int size_inside_pte = left < 0x400000 ? left : 0x400000; + + MALI_DEBUG_ASSERT_POINTER(session_data->page_entries_mapped[i]); + MALI_DEBUG_ASSERT(0 != session_data->page_entries_usage_count[i]); + MALI_DEBUG_PRINT(4, ("PDE %d\n", i)); + + session_data->page_entries_usage_count[i]--; + + if (0 == session_data->page_entries_usage_count[i]) + { + MALI_DEBUG_PRINT(4, ("Releasing page table as this is the last reference\n")); + /* last reference removed, no need to zero out each PTE */ + mali_mmu_release_table_page(MALI_MMU_ENTRY_ADDRESS(_mali_osk_mem_ioread32(session_data->page_directory_mapped, i * sizeof(u32)))); + session_data->page_entries_mapped[i] = NULL; + _mali_osk_mem_iowrite32(session_data->page_directory_mapped, i * sizeof(u32), 0); /* mark as not present in the page directory */ +#if defined USING_MALI400_L2_CACHE + page_dir_updated = 1; +#endif + } + else + { + int j; + const int first_pte_idx = MALI_MMU_PTE_ENTRY(mali_address); + const int last_pte_idx = MALI_MMU_PTE_ENTRY(mali_address + size_inside_pte - 1); + + MALI_DEBUG_PRINT(4, ("Partial page table fill detected, zapping entries %d through %d (page table at 0x%08X)\n", first_pte_idx, last_pte_idx, MALI_MMU_ENTRY_ADDRESS(_mali_osk_mem_ioread32(session_data->page_directory_mapped, i * sizeof(u32))))); + + for (j = first_pte_idx; j <= last_pte_idx; j++) + { + _mali_osk_mem_iowrite32(session_data->page_entries_mapped[i], j * sizeof(u32), 0); + } + + MALI_DEBUG_PRINT(5, ("zap complete\n")); + + mali_address += size_inside_pte; + +#if defined USING_MALI400_L2_CACHE + if (1 == has_active_mmus) + { + /* Invalidate the page we've just modified */ + mali_kernel_l2_cache_invalidate_page( _mali_osk_mem_ioread32(session_data->page_directory_mapped, i*sizeof(u32)) & ~MALI_MMU_FLAGS_MASK); + } +#endif + } + left -= size_inside_pte; + } + +#if defined USING_MALI400_L2_CACHE + if ((1 == page_dir_updated) && (1== has_active_mmus)) + { + /* The page directory was also updated */ + mali_kernel_l2_cache_invalidate_page(session_data->page_directory); + } +#endif +} + +static _mali_osk_errcode_t mali_address_manager_map(mali_memory_allocation * descriptor, u32 offset, u32 *phys_addr, u32 size) +{ + memory_session * session_data; + u32 mali_address; + u32 mali_address_end; + u32 current_phys_addr; +#if defined USING_MALI400_L2_CACHE + int has_active_mmus = 0; +#endif + + MALI_DEBUG_ASSERT_POINTER(descriptor); + + MALI_DEBUG_ASSERT_POINTER( phys_addr ); + + current_phys_addr = *phys_addr; + + session_data = (memory_session*)descriptor->mali_addr_mapping_info; + MALI_DEBUG_ASSERT_POINTER(session_data); + + mali_address = descriptor->mali_address + offset; + mali_address_end = descriptor->mali_address + offset + size; + +#if defined USING_MALI400_L2_CACHE + if (0 == _mali_osk_list_empty(&session_data->active_mmus)) + { + /* + * We have active MMUs, so we are probably in the process of alocating more memory for a suspended GP job (PLBU heap) + * From Mali-400 MP r1p0, MMU page directory/tables are also cached by the Mali L2 cache, thus we need to invalidate the page tables + * from the L2 cache when we have allocated more heap memory. + * We only need to do this when we have an active MMU, because we otherwise invalidate the entire Mali L2 cache before at job start + */ + has_active_mmus = 1; + } +#endif + + MALI_DEBUG_PRINT(6, ("Mali map: mapping 0x%08X to Mali address 0x%08X length 0x%08X\n", current_phys_addr, mali_address, size)); + + MALI_DEBUG_ASSERT_POINTER(session_data->page_entries_mapped); + + for ( ; mali_address < mali_address_end; mali_address += MALI_MMU_PAGE_SIZE, current_phys_addr += MALI_MMU_PAGE_SIZE) + { + MALI_DEBUG_ASSERT_POINTER(session_data->page_entries_mapped[MALI_MMU_PDE_ENTRY(mali_address)]); + _mali_osk_mem_iowrite32(session_data->page_entries_mapped[MALI_MMU_PDE_ENTRY(mali_address)], MALI_MMU_PTE_ENTRY(mali_address) * sizeof(u32), current_phys_addr | MALI_MMU_FLAGS_WRITE_PERMISSION | MALI_MMU_FLAGS_READ_PERMISSION | MALI_MMU_FLAGS_PRESENT); + } + +#if defined USING_MALI400_L2_CACHE + if (1 == has_active_mmus) + { + int i; + const int first_pde_idx = MALI_MMU_PDE_ENTRY(mali_address); + const int last_pde_idx = MALI_MMU_PDE_ENTRY(mali_address_end - 1); + + /* + * Invalidate the updated page table(s), incase they have been used for something + * else since last job start (invalidation of entire Mali L2 cache) + */ + for (i = first_pde_idx; i <= last_pde_idx; i++) + { + mali_kernel_l2_cache_invalidate_page( _mali_osk_mem_ioread32(session_data->page_directory_mapped, i*sizeof(u32)) & ~MALI_MMU_FLAGS_MASK); + } + } +#endif + + MALI_SUCCESS; +} + +/* This handler registered to mali_mmap for MMU builds */ +_mali_osk_errcode_t _mali_ukk_mem_mmap( _mali_uk_mem_mmap_s *args ) +{ + struct mali_session_data * mali_session_data; + mali_memory_allocation * descriptor; + memory_session * session_data; + + /* validate input */ + if (NULL == args) { MALI_DEBUG_PRINT(3,("mali_ukk_mem_mmap: args was NULL\n")); MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); } + + /* Unpack arguments */ + mali_session_data = (struct mali_session_data *)args->ctx; + + if (NULL == mali_session_data) { MALI_DEBUG_PRINT(3,("mali_ukk_mem_mmap: mali_session data was NULL\n")); MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS); } + + MALI_DEBUG_ASSERT( mali_subsystem_memory_id >= 0 ); + + session_data = mali_kernel_session_manager_slot_get(mali_session_data, mali_subsystem_memory_id); + /* validate input */ + if (NULL == session_data) { MALI_DEBUG_PRINT(3,("mali_ukk_mem_mmap: session data was NULL\n")); MALI_ERROR(_MALI_OSK_ERR_FAULT); } + + descriptor = (mali_memory_allocation*) _mali_osk_calloc( 1, sizeof(mali_memory_allocation) ); + if (NULL == descriptor) { MALI_DEBUG_PRINT(3,("mali_ukk_mem_mmap: descriptor was NULL\n")); MALI_ERROR(_MALI_OSK_ERR_NOMEM); } + + descriptor->size = args->size; + descriptor->mali_address = args->phys_addr; + descriptor->mali_addr_mapping_info = (void*)session_data; + + descriptor->process_addr_mapping_info = args->ukk_private; /* save to be used during physical manager callback */ + descriptor->flags = MALI_MEMORY_ALLOCATION_FLAG_MAP_INTO_USERSPACE; + descriptor->lock = session_data->lock; + _mali_osk_list_init( &descriptor->list ); + + _mali_osk_lock_wait(session_data->lock, _MALI_OSK_LOCKMODE_RW); + + if (0 == mali_allocation_engine_allocate_memory(memory_engine, descriptor, physical_memory_allocators, &session_data->memory_head)) + { + mali_kernel_memory_mmu * mmu, * temp_mmu; + + _MALI_OSK_LIST_FOREACHENTRY(mmu, temp_mmu, &session_data->active_mmus, mali_kernel_memory_mmu, session_link) + { + /* no need to lock the MMU as we own it already */ + MALI_DEBUG_PRINT(5, ("Zapping the cache of mmu %s as it's using the page table we have updated\n", mmu->description)); + + _mali_osk_lock_wait(mmu->lock, _MALI_OSK_LOCKMODE_RW); + + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ENABLE_STALL); + if (!mali_benchmark) { + while ( (mali_mmu_register_read(mmu, MALI_MMU_REGISTER_STATUS) & MALI_MMU_STATUS_BIT_STALL_ACTIVE) == 0) _mali_osk_time_ubusydelay(1); + } + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ZAP_CACHE); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_DISABLE_STALL); + + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); + } + + _mali_osk_lock_signal(session_data->lock, _MALI_OSK_LOCKMODE_RW); + + /* All ok, write out any information generated from this call */ + args->mapping = descriptor->mapping; + args->cookie = (u32)descriptor; + + MALI_DEBUG_PRINT(7, ("MMAP OK\n")); + /* All done */ + MALI_SUCCESS; + } + else + { + _mali_osk_lock_signal(session_data->lock, _MALI_OSK_LOCKMODE_RW); + /* OOM, but not a fatal error */ + MALI_DEBUG_PRINT(4, ("Memory allocation failure, OOM\n")); + _mali_osk_free(descriptor); + /* Linux will free the CPU address allocation, userspace client the Mali address allocation */ + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } +} + +static void _mali_ukk_mem_munmap_internal( _mali_uk_mem_munmap_s *args ) +{ + memory_session * session_data; + mali_kernel_memory_mmu * mmu, * temp_mmu; + mali_memory_allocation * descriptor; + + descriptor = (mali_memory_allocation *)args->cookie; + MALI_DEBUG_ASSERT_POINTER(descriptor); + + /** @note args->context unused; we use the memory_session from the cookie */ + /* args->mapping and args->size are also discarded. They are only necessary + for certain do_munmap implementations. However, they could be used to check the + descriptor at this point. */ + + session_data = (memory_session*)descriptor->mali_addr_mapping_info; + MALI_DEBUG_ASSERT_POINTER(session_data); + + /* Stall the MMU(s) which is using the address space we're operating on. + * Note that active_mmus must be sorted in order of ID to avoid a mutex + * ordering violation. + */ + _MALI_OSK_LIST_FOREACHENTRY(mmu, temp_mmu, &session_data->active_mmus, mali_kernel_memory_mmu, session_link) + { + const int max_loop_count = 100; + const int sleep_duration = 1; /* must be below 1000 */ + int i; + + _mali_osk_lock_wait(mmu->lock, _MALI_OSK_LOCKMODE_RW); + + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ENABLE_STALL); + + if (!mali_benchmark) + { + for ( i = 0; i < max_loop_count; i++) + { + if (mali_mmu_register_read(mmu, MALI_MMU_REGISTER_STATUS) & MALI_MMU_STATUS_BIT_STALL_ACTIVE) break; + _mali_osk_time_ubusydelay(sleep_duration); + } + + MALI_DEBUG_PRINT_IF(3, max_loop_count == i, ("Stall failed, trying zap anyway\n")); + } + } + + /* This function also removes the memory from the session's memory list */ + mali_allocation_engine_release_memory(memory_engine, descriptor); + _mali_osk_free(descriptor); + + /* any L2 maintenance was done during mali_allocation_engine_release_memory */ + /* the session is locked, so the active mmu list should be the same */ + /* zap the TLB and resume operation */ + _MALI_OSK_LIST_FOREACHENTRY(mmu, temp_mmu, &session_data->active_mmus, mali_kernel_memory_mmu, session_link) + { + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_ZAP_CACHE); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_COMMAND, MALI_MMU_COMMAND_DISABLE_STALL); + + _mali_osk_lock_signal(mmu->lock, _MALI_OSK_LOCKMODE_RW); + } +} + +/* Handler for unmapping memory for MMU builds */ +_mali_osk_errcode_t _mali_ukk_mem_munmap( _mali_uk_mem_munmap_s *args ) +{ + mali_memory_allocation * descriptor; + _mali_osk_lock_t *descriptor_lock; + + descriptor = (mali_memory_allocation *)args->cookie; + MALI_DEBUG_ASSERT_POINTER(descriptor); + + /** @note args->context unused; we use the memory_session from the cookie */ + /* args->mapping and args->size are also discarded. They are only necessary + for certain do_munmap implementations. However, they could be used to check the + descriptor at this point. */ + + MALI_DEBUG_ASSERT_POINTER((memory_session*)descriptor->mali_addr_mapping_info); + + descriptor_lock = descriptor->lock; /* should point to the session data lock... */ + + if (descriptor_lock) + { + _mali_osk_lock_wait( descriptor_lock, _MALI_OSK_LOCKMODE_RW ); + } + /* Noninterruptable spinlock type, so must always have locked. Checking should've been done in OSK function. */ + + _mali_ukk_mem_munmap_internal( args ); + /* descriptor is no longer valid - it may've been freed */ + + if (descriptor_lock) + { + _mali_osk_lock_signal( descriptor_lock, _MALI_OSK_LOCKMODE_RW ); + } + return _MALI_OSK_ERR_OK; +} + +/* Is called when the rendercore wants the mmu to give an interrupt */ +static void mali_mmu_probe_irq_trigger(mali_kernel_memory_mmu * mmu) +{ + MALI_DEBUG_PRINT(2, ("mali_mmu_probe_irq_trigger\n")); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_RAWSTAT, MALI_MMU_INTERRUPT_PAGE_FAULT|MALI_MMU_INTERRUPT_READ_BUS_ERROR); +} + +/* Is called when the irq probe wants the mmu to acknowledge an interrupt from the hw */ +static _mali_osk_errcode_t mali_mmu_probe_irq_acknowledge(mali_kernel_memory_mmu * mmu) +{ + u32 int_stat; + + int_stat = mali_mmu_register_read(mmu, MALI_MMU_REGISTER_INT_STATUS); + + MALI_DEBUG_PRINT(2, ("mali_mmu_probe_irq_acknowledge: intstat 0x%x\n", int_stat)); + if (int_stat & MALI_MMU_INTERRUPT_PAGE_FAULT) + { + MALI_DEBUG_PRINT(2, ("Probe: Page fault detect: PASSED\n")); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_CLEAR, MALI_MMU_INTERRUPT_PAGE_FAULT); + } + else MALI_DEBUG_PRINT(1, ("Probe: Page fault detect: FAILED\n")); + + if (int_stat & MALI_MMU_INTERRUPT_READ_BUS_ERROR) + { + MALI_DEBUG_PRINT(2, ("Probe: Bus read error detect: PASSED\n")); + mali_mmu_register_write(mmu, MALI_MMU_REGISTER_INT_CLEAR, MALI_MMU_INTERRUPT_READ_BUS_ERROR); + } + else MALI_DEBUG_PRINT(1, ("Probe: Bus read error detect: FAILED\n")); + + if ( (int_stat & (MALI_MMU_INTERRUPT_PAGE_FAULT|MALI_MMU_INTERRUPT_READ_BUS_ERROR)) == + (MALI_MMU_INTERRUPT_PAGE_FAULT|MALI_MMU_INTERRUPT_READ_BUS_ERROR)) + { + MALI_SUCCESS; + } + + MALI_ERROR(_MALI_OSK_ERR_FAULT); +} + +struct dump_info +{ + u32 buffer_left; + u32 register_writes_size; + u32 page_table_dump_size; + u32 *buffer; +}; + +static _mali_osk_errcode_t writereg(u32 where, u32 what, const char * comment, struct dump_info * info, int dump_to_serial) +{ + if (dump_to_serial) MALI_DEBUG_PRINT(1, ("writereg %08X %08X # %s\n", where, what, comment)); + + if (NULL != info) + { + info->register_writes_size += sizeof(u32)*2; /* two 32-bit words */ + + if (NULL != info->buffer) + { + /* check that we have enough space */ + if (info->buffer_left < sizeof(u32)*2) MALI_ERROR(_MALI_OSK_ERR_NOMEM); + + *info->buffer = where; + info->buffer++; + + *info->buffer = what; + info->buffer++; + + info->buffer_left -= sizeof(u32)*2; + } + } + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t dump_page(mali_io_address page, u32 phys_addr, struct dump_info * info, int dump_to_serial) +{ + if (dump_to_serial) + { + int i; + for (i = 0; i < 256; i++) + { + MALI_DEBUG_PRINT(1, ("%08X: %08X %08X %08X %08X\n", phys_addr + 16*i, _mali_osk_mem_ioread32(page, (i*4 + 0) * sizeof(u32)), + _mali_osk_mem_ioread32(page, (i*4 + 1) * sizeof(u32)), + _mali_osk_mem_ioread32(page, (i*4 + 2) * sizeof(u32)), + _mali_osk_mem_ioread32(page, (i*4 + 3) * sizeof(u32)))); + + } + } + + if (NULL != info) + { + /* 4096 for the page and 4 bytes for the address */ + const u32 page_size_in_elements = MALI_MMU_PAGE_SIZE / 4; + const u32 page_size_in_bytes = MALI_MMU_PAGE_SIZE; + const u32 dump_size_in_bytes = MALI_MMU_PAGE_SIZE + 4; + + info->page_table_dump_size += dump_size_in_bytes; + + if (NULL != info->buffer) + { + if (info->buffer_left < dump_size_in_bytes) MALI_ERROR(_MALI_OSK_ERR_NOMEM); + + *info->buffer = phys_addr; + info->buffer++; + + _mali_osk_memcpy(info->buffer, page, page_size_in_bytes); + info->buffer += page_size_in_elements; + + info->buffer_left -= dump_size_in_bytes; + } + } + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t dump_mmu_page_table(memory_session * session_data, struct dump_info * info) +{ + MALI_DEBUG_ASSERT_POINTER(session_data); + MALI_DEBUG_ASSERT_POINTER(info); + + if (NULL != session_data->page_directory_mapped) + { + int i; + + MALI_CHECK_NO_ERROR( + dump_page(session_data->page_directory_mapped, session_data->page_directory, info, 0) + ); + + for (i = 0; i < 1024; i++) + { + if (NULL != session_data->page_entries_mapped[i]) + { + MALI_CHECK_NO_ERROR( + dump_page(session_data->page_entries_mapped[i], _mali_osk_mem_ioread32(session_data->page_directory_mapped, i * sizeof(u32)) & ~MALI_MMU_FLAGS_MASK, info, 0) + ); + } + } + } + + MALI_SUCCESS; +} + +static _mali_osk_errcode_t dump_mmu_registers(memory_session * session_data, struct dump_info * info) +{ + MALI_CHECK_NO_ERROR(writereg(0x00000000, session_data->page_directory, "set the page directory address", info, 0)); + MALI_CHECK_NO_ERROR(writereg(0x00000008, 4, "zap???", info, 0)); + MALI_CHECK_NO_ERROR(writereg(0x00000008, 0, "enable paging", info, 0)); + MALI_SUCCESS; +} + +_mali_osk_errcode_t _mali_ukk_query_mmu_page_table_dump_size( _mali_uk_query_mmu_page_table_dump_size_s *args ) +{ + struct dump_info info = { 0, 0, 0, NULL }; + memory_session * session_data; + + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + + session_data = (memory_session *)mali_kernel_session_manager_slot_get(args->ctx, mali_subsystem_memory_id); + + MALI_CHECK_NO_ERROR(dump_mmu_registers(session_data, &info)); + MALI_CHECK_NO_ERROR(dump_mmu_page_table(session_data, &info)); + args->size = info.register_writes_size + info.page_table_dump_size; + MALI_SUCCESS; +} + +_mali_osk_errcode_t _mali_ukk_dump_mmu_page_table( _mali_uk_dump_mmu_page_table_s * args ) +{ + struct dump_info info = { 0, 0, 0, NULL }; + memory_session * session_data; + + MALI_DEBUG_ASSERT_POINTER(args); + MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS); + MALI_CHECK_NON_NULL(args->buffer, _MALI_OSK_ERR_INVALID_ARGS); + + session_data = (memory_session *)mali_kernel_session_manager_slot_get(args->ctx, mali_subsystem_memory_id); + + info.buffer_left = args->size; + info.buffer = args->buffer; + + args->register_writes = info.buffer; + MALI_CHECK_NO_ERROR(dump_mmu_registers(session_data, &info)); + + args->page_table_dump = info.buffer; + MALI_CHECK_NO_ERROR(dump_mmu_page_table(session_data, &info)); + + args->register_writes_size = info.register_writes_size; + args->page_table_dump_size = info.page_table_dump_size; + + MALI_SUCCESS; +} + +/** + * Stub function to satisfy UDD interface exclusion requirement. + * This is because the Base code compiles in \b both MMU and non-MMU calls, + * so both sets must be declared (but the 'unused' set may be stub) + */ +_mali_osk_errcode_t _mali_ukk_get_big_block( _mali_uk_get_big_block_s *args ) +{ + MALI_IGNORE( args ); + return _MALI_OSK_ERR_FAULT; +} + +/** + * Stub function to satisfy UDD interface exclusion requirement. + * This is because the Base code compiles in \b both MMU and non-MMU calls, + * so both sets must be declared (but the 'unused' set may be stub) + */ +_mali_osk_errcode_t _mali_ukk_free_big_block( _mali_uk_free_big_block_s *args ) +{ + MALI_IGNORE( args ); + return _MALI_OSK_ERR_FAULT; +} |