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satip-axe/kernel/drivers/stm/mali/common/mali_kernel_mem_mmu.c

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/*
* Copyright (C) 2010-2011 ARM Limited. All rights reserved.
* Copyright (C) 2011 STMicroelectronics R&D 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_lock_term(mmu->lock);
_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;
MALI_DEBUG_PRINT(1, ("mali_kernel_memory_mmu_interrupt_handler_upper_half\n"));
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_lock_term(page_table_cache.lock);
}
_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)
{
const int max_loop_count = 100;
const int sleep_duration = 1; /* must be below 1000 */
int i;
/* 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) {
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(2, max_loop_count == i, ("Stall of mmu %s failed, trying zap anyway\n",mmu->description));
}
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;
}
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