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path: root/drivers/gpu/mali400/r3p2/ump/common/ump_kernel_ref_drv.c
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Diffstat (limited to 'drivers/gpu/mali400/r3p2/ump/common/ump_kernel_ref_drv.c')
-rw-r--r--drivers/gpu/mali400/r3p2/ump/common/ump_kernel_ref_drv.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/drivers/gpu/mali400/r3p2/ump/common/ump_kernel_ref_drv.c b/drivers/gpu/mali400/r3p2/ump/common/ump_kernel_ref_drv.c
new file mode 100644
index 0000000..6335bf6
--- /dev/null
+++ b/drivers/gpu/mali400/r3p2/ump/common/ump_kernel_ref_drv.c
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+ *
+ * This program is free software and is provided to you under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
+ *
+ * A copy of the licence is included with the program, and can also be obtained from Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "mali_osk.h"
+#include "mali_osk_list.h"
+#include "ump_osk.h"
+#include "ump_uk_types.h"
+
+#include "ump_kernel_interface_ref_drv.h"
+#include "ump_kernel_common.h"
+#include "ump_kernel_descriptor_mapping.h"
+
+#define UMP_MINIMUM_SIZE 4096
+#define UMP_MINIMUM_SIZE_MASK (~(UMP_MINIMUM_SIZE-1))
+#define UMP_SIZE_ALIGN(x) (((x)+UMP_MINIMUM_SIZE-1)&UMP_MINIMUM_SIZE_MASK)
+#define UMP_ADDR_ALIGN_OFFSET(x) ((x)&(UMP_MINIMUM_SIZE-1))
+static void phys_blocks_release(void * ctx, struct ump_dd_mem * descriptor);
+
+UMP_KERNEL_API_EXPORT ump_dd_handle ump_dd_handle_create_from_phys_blocks(ump_dd_physical_block * blocks, unsigned long num_blocks)
+{
+ ump_dd_mem * mem;
+ unsigned long size_total = 0;
+ int map_id;
+ u32 i;
+
+ /* Go through the input blocks and verify that they are sane */
+ for (i=0; i < num_blocks; i++)
+ {
+ unsigned long addr = blocks[i].addr;
+ unsigned long size = blocks[i].size;
+
+ DBG_MSG(5, ("Adding physical memory to new handle. Address: 0x%08lx, size: %lu\n", addr, size));
+ size_total += blocks[i].size;
+
+ if (0 != UMP_ADDR_ALIGN_OFFSET(addr))
+ {
+ MSG_ERR(("Trying to create UMP memory from unaligned physical address. Address: 0x%08lx\n", addr));
+ return UMP_DD_HANDLE_INVALID;
+ }
+
+ if (0 != UMP_ADDR_ALIGN_OFFSET(size))
+ {
+ MSG_ERR(("Trying to create UMP memory with unaligned size. Size: %lu\n", size));
+ return UMP_DD_HANDLE_INVALID;
+ }
+ }
+
+ /* Allocate the ump_dd_mem struct for this allocation */
+ mem = _mali_osk_malloc(sizeof(*mem));
+ if (NULL == mem)
+ {
+ DBG_MSG(1, ("Could not allocate ump_dd_mem in ump_dd_handle_create_from_phys_blocks()\n"));
+ return UMP_DD_HANDLE_INVALID;
+ }
+
+ /* Find a secure ID for this allocation */
+ _mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ map_id = ump_descriptor_mapping_allocate_mapping(device.secure_id_map, (void*) mem);
+
+ if (map_id < 0)
+ {
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ _mali_osk_free(mem);
+ DBG_MSG(1, ("Failed to allocate secure ID in ump_dd_handle_create_from_phys_blocks()\n"));
+ return UMP_DD_HANDLE_INVALID;
+ }
+
+ /* Now, make a copy of the block information supplied by the user */
+ mem->block_array = _mali_osk_malloc(sizeof(ump_dd_physical_block)* num_blocks);
+ if (NULL == mem->block_array)
+ {
+ ump_descriptor_mapping_free(device.secure_id_map, map_id);
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ _mali_osk_free(mem);
+ DBG_MSG(1, ("Could not allocate a mem handle for function ump_dd_handle_create_from_phys_blocks().\n"));
+ return UMP_DD_HANDLE_INVALID;
+ }
+
+ _mali_osk_memcpy(mem->block_array, blocks, sizeof(ump_dd_physical_block) * num_blocks);
+
+ /* And setup the rest of the ump_dd_mem struct */
+ _mali_osk_atomic_init(&mem->ref_count, 1);
+ mem->secure_id = (ump_secure_id)map_id;
+ mem->size_bytes = size_total;
+ mem->nr_blocks = num_blocks;
+ mem->backend_info = NULL;
+ mem->ctx = NULL;
+ mem->release_func = phys_blocks_release;
+ /* For now UMP handles created by ump_dd_handle_create_from_phys_blocks() is forced to be Uncached */
+ mem->is_cached = 0;
+ mem->hw_device = _UMP_UK_USED_BY_CPU;
+ mem->lock_usage = UMP_NOT_LOCKED;
+
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ DBG_MSG(3, ("UMP memory created. ID: %u, size: %lu\n", mem->secure_id, mem->size_bytes));
+
+ return (ump_dd_handle)mem;
+}
+
+static void phys_blocks_release(void * ctx, struct ump_dd_mem * descriptor)
+{
+ _mali_osk_free(descriptor->block_array);
+ descriptor->block_array = NULL;
+}
+
+_mali_osk_errcode_t _ump_ukk_allocate( _ump_uk_allocate_s *user_interaction )
+{
+ ump_session_data * session_data = NULL;
+ ump_dd_mem *new_allocation = NULL;
+ ump_session_memory_list_element * session_memory_element = NULL;
+ int map_id;
+
+ DEBUG_ASSERT_POINTER( user_interaction );
+ DEBUG_ASSERT_POINTER( user_interaction->ctx );
+
+ session_data = (ump_session_data *) user_interaction->ctx;
+
+ session_memory_element = _mali_osk_calloc( 1, sizeof(ump_session_memory_list_element));
+ if (NULL == session_memory_element)
+ {
+ DBG_MSG(1, ("Failed to allocate ump_session_memory_list_element in ump_ioctl_allocate()\n"));
+ return _MALI_OSK_ERR_NOMEM;
+ }
+
+
+ new_allocation = _mali_osk_calloc( 1, sizeof(ump_dd_mem));
+ if (NULL==new_allocation)
+ {
+ _mali_osk_free(session_memory_element);
+ DBG_MSG(1, ("Failed to allocate ump_dd_mem in _ump_ukk_allocate()\n"));
+ return _MALI_OSK_ERR_NOMEM;
+ }
+
+ /* Create a secure ID for this allocation */
+ _mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ map_id = ump_descriptor_mapping_allocate_mapping(device.secure_id_map, (void*)new_allocation);
+
+ if (map_id < 0)
+ {
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ _mali_osk_free(session_memory_element);
+ _mali_osk_free(new_allocation);
+ DBG_MSG(1, ("Failed to allocate secure ID in ump_ioctl_allocate()\n"));
+ return - _MALI_OSK_ERR_INVALID_FUNC;
+ }
+
+ /* Initialize the part of the new_allocation that we know so for */
+ new_allocation->secure_id = (ump_secure_id)map_id;
+ _mali_osk_atomic_init(&new_allocation->ref_count,1);
+ if ( 0==(UMP_REF_DRV_UK_CONSTRAINT_USE_CACHE & user_interaction->constraints) )
+ new_allocation->is_cached = 0;
+ else new_allocation->is_cached = 1;
+
+ /* special case a size of 0, we should try to emulate what malloc does in this case, which is to return a valid pointer that must be freed, but can't be dereferences */
+ if (0 == user_interaction->size)
+ {
+ user_interaction->size = 1; /* emulate by actually allocating the minimum block size */
+ }
+
+ new_allocation->size_bytes = UMP_SIZE_ALIGN(user_interaction->size); /* Page align the size */
+ new_allocation->lock_usage = UMP_NOT_LOCKED;
+
+ /* Now, ask the active memory backend to do the actual memory allocation */
+ if (!device.backend->allocate( device.backend->ctx, new_allocation ) )
+ {
+ DBG_MSG(3, ("OOM: No more UMP memory left. Failed to allocate memory in ump_ioctl_allocate(). Size: %lu, requested size: %lu\n", new_allocation->size_bytes, (unsigned long)user_interaction->size));
+ ump_descriptor_mapping_free(device.secure_id_map, map_id);
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ _mali_osk_free(new_allocation);
+ _mali_osk_free(session_memory_element);
+ return _MALI_OSK_ERR_INVALID_FUNC;
+ }
+ new_allocation->hw_device = _UMP_UK_USED_BY_CPU;
+ new_allocation->ctx = device.backend->ctx;
+ new_allocation->release_func = device.backend->release;
+
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+
+ /* Initialize the session_memory_element, and add it to the session object */
+ session_memory_element->mem = new_allocation;
+ _mali_osk_lock_wait(session_data->lock, _MALI_OSK_LOCKMODE_RW);
+ _mali_osk_list_add(&(session_memory_element->list), &(session_data->list_head_session_memory_list));
+ _mali_osk_lock_signal(session_data->lock, _MALI_OSK_LOCKMODE_RW);
+
+ user_interaction->secure_id = new_allocation->secure_id;
+ user_interaction->size = new_allocation->size_bytes;
+ DBG_MSG(3, ("UMP memory allocated. ID: %u, size: %lu\n", new_allocation->secure_id, new_allocation->size_bytes));
+
+ return _MALI_OSK_ERR_OK;
+}
+
+/* MALI_SEC */
+UMP_KERNEL_API_EXPORT ump_dd_status_code ump_dd_meminfo_set(ump_dd_handle memh, void* args)
+{
+ ump_dd_mem * mem;
+ ump_secure_id secure_id;
+
+ DEBUG_ASSERT_POINTER(memh);
+
+ secure_id = ump_dd_secure_id_get(memh);
+
+ _mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ if (0 == ump_descriptor_mapping_get(device.secure_id_map, (int)secure_id, (void**)&mem))
+ {
+ device.backend->set(mem, args);
+ }
+ else
+ {
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ DBG_MSG(1, ("Failed to look up mapping in ump_meminfo_set(). ID: %u\n", (ump_secure_id)secure_id));
+ return UMP_DD_INVALID;
+ }
+
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+
+ return UMP_DD_SUCCESS;
+}
+
+UMP_KERNEL_API_EXPORT void *ump_dd_meminfo_get(ump_secure_id secure_id, void* args)
+{
+ ump_dd_mem * mem;
+ void *result;
+
+ _mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ if (0 == ump_descriptor_mapping_get(device.secure_id_map, (int)secure_id, (void**)&mem))
+ {
+ result = device.backend->get(mem, args);
+ }
+ else
+ {
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+ DBG_MSG(1, ("Failed to look up mapping in ump_meminfo_get(). ID: %u\n", (ump_secure_id)secure_id));
+ return UMP_DD_HANDLE_INVALID;
+ }
+
+ _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
+
+ return result;
+}
+
+UMP_KERNEL_API_EXPORT ump_dd_handle ump_dd_handle_get_from_vaddr(unsigned long vaddr)
+{
+ ump_dd_mem * mem;
+
+ DBG_MSG(5, ("Getting handle from Virtual address. vaddr: %u\n", vaddr));
+
+ _ump_osk_mem_mapregion_get(&mem, vaddr);
+
+ DBG_MSG(1, ("Getting handle's Handle : 0x%8lx\n", mem));
+
+ return (ump_dd_handle)mem;
+}