diff options
Diffstat (limited to 'drivers/media/video/samsung/ump/linux/ump_kernel_memory_backend_vcm.c')
-rw-r--r-- | drivers/media/video/samsung/ump/linux/ump_kernel_memory_backend_vcm.c | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/drivers/media/video/samsung/ump/linux/ump_kernel_memory_backend_vcm.c b/drivers/media/video/samsung/ump/linux/ump_kernel_memory_backend_vcm.c deleted file mode 100644 index 46797ea..0000000 --- a/drivers/media/video/samsung/ump/linux/ump_kernel_memory_backend_vcm.c +++ /dev/null @@ -1,290 +0,0 @@ -/* - * 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. - */ - -/* create by boojin.kim@samsung.com */ -/* needed to detect kernel version specific code */ -#include <linux/version.h> - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26) -#include <linux/semaphore.h> -#else /* pre 2.6.26 the file was in the arch specific location */ -#include <asm/semaphore.h> -#endif - -#include <linux/mm.h> -#include <linux/slab.h> -#include <asm/atomic.h> -#include <linux/vmalloc.h> -#include <asm/cacheflush.h> -#include "ump_kernel_common.h" -#include "ump_kernel_memory_backend.h" -#include "ump_kernel_interface_ref_drv.h" -#include "ump_kernel_memory_backend_vcm.h" -#include "../common/ump_uk_types.h" -#include <linux/vcm-drv.h> -#include <plat/s5p-vcm.h> -#include <linux/dma-mapping.h> - -#define UMP_REF_DRV_UK_VCM_DEV_G2D 12 - -typedef struct ump_vcm { - struct vcm *vcm; - struct vcm_res *vcm_res; - unsigned int dev_id; -} ump_vcm; - -typedef struct vcm_allocator { - struct semaphore mutex; - u32 num_vcm_blocks; -} vcm_allocator; - -static void ump_vcm_free(void* ctx, ump_dd_mem * descriptor); -static int ump_vcm_allocate(void* ctx, ump_dd_mem * descriptor); -static void *vcm_res_get(ump_dd_mem *mem, void* args); -static void vcm_attr_set(ump_dd_mem *mem, void* args); -static int vcm_mem_allocator(vcm_allocator *info, ump_dd_mem *descriptor); -static void vcm_memory_backend_destroy(ump_memory_backend * backend); - - -/* - * Create VCM memory backend - */ -ump_memory_backend * ump_vcm_memory_backend_create(const int max_allocation) -{ - ump_memory_backend * backend; - vcm_allocator * info; - - info = kmalloc(sizeof(vcm_allocator), GFP_KERNEL); - if (NULL == info) - { - return NULL; - } - - info->num_vcm_blocks = 0; - - - sema_init(&info->mutex, 1); - - backend = kmalloc(sizeof(ump_memory_backend), GFP_KERNEL); - if (NULL == backend) - { - kfree(info); - return NULL; - } - - backend->ctx = info; - backend->allocate = ump_vcm_allocate; - backend->release = ump_vcm_free; - backend->shutdown = vcm_memory_backend_destroy; - backend->pre_allocate_physical_check = NULL; - backend->adjust_to_mali_phys = NULL; - - backend->get = vcm_res_get; - backend->set = vcm_attr_set; - - - return backend; -} - -/* - * Destroy specified VCM memory backend - */ -static void vcm_memory_backend_destroy(ump_memory_backend * backend) -{ - vcm_allocator * info = (vcm_allocator*)backend->ctx; -#if 0 - DBG_MSG_IF(1, 0 != info->num_pages_allocated, ("%d pages still in use during shutdown\n", info->num_pages_allocated)); -#endif - kfree(info); - kfree(backend); -} - -/* - * Allocate UMP memory - */ -static int ump_vcm_allocate(void *ctx, ump_dd_mem * descriptor) -{ - int ret; /* success */ - vcm_allocator *info; - struct ump_vcm *ump_vcm; - - BUG_ON(!descriptor); - BUG_ON(!ctx); - - info = (vcm_allocator*)ctx; - - ump_vcm = kmalloc(sizeof(struct ump_vcm), GFP_KERNEL); - if (NULL == ump_vcm) - { - return 0; - } - - ump_vcm->dev_id = (int)descriptor->backend_info & ~UMP_REF_DRV_UK_CONSTRAINT_USE_CACHE; - - if(ump_vcm->dev_id == UMP_REF_DRV_UK_CONSTRAINT_NONE) { /* None */ - ump_vcm->dev_id = UMP_REF_DRV_UK_VCM_DEV_G2D; /* this ID is G2D */ - } - else if(ump_vcm->dev_id == UMP_REF_DRV_UK_CONSTRAINT_PHYSICALLY_LINEAR) { /* Physical Linear */ - return 0; - } - else { /* Other VCM */ - ump_vcm->dev_id -= 2; - } - - DBG_MSG(5, ("Device ID for VCM : %d\n", ump_vcm->dev_id)); - ump_vcm->vcm = vcm_find_vcm(ump_vcm->dev_id); - - if (!ump_vcm->vcm) - { - return 0; - } - descriptor->backend_info = (void*)ump_vcm; - - if (down_interruptible(&info->mutex)) { - DBG_MSG(1, ("Failed to get mutex in ump_vcm_allocate\n")); - return 0; /* failure */ - } - - ret = vcm_mem_allocator(info, descriptor); - up(&info->mutex); - - return ret; /* success */ -} - -static int vcm_mem_allocator(vcm_allocator *info, ump_dd_mem *descriptor) -{ - unsigned long num_blocks; - int i; - struct vcm_phys *phys; - struct vcm_phys_part *part; - int size_total = 0; - struct ump_vcm *ump_vcm; - - ump_vcm = (struct ump_vcm*)descriptor->backend_info; - - ump_vcm->vcm_res = - vcm_make_binding(ump_vcm->vcm, descriptor->size_bytes, - ump_vcm->dev_id, 0); - - phys = ump_vcm->vcm_res->phys; - part = phys->parts; - num_blocks = phys->count; - - DBG_MSG(5, - ("Allocating page array. Size: %lu, VCM Reservation : 0x%x\n", - phys->count * sizeof(ump_dd_physical_block), - ump_vcm->vcm_res->start)); - - /* Now, make a copy of the block information supplied by the user */ - descriptor->block_array = - (ump_dd_physical_block *) vmalloc(sizeof(ump_dd_physical_block) * - num_blocks); - - if (NULL == descriptor->block_array) { - vfree(descriptor->block_array); - DBG_MSG(1, ("Could not allocate a mem handle for function.\n")); - return 0; /* failure */ - } - - for (i = 0; i < num_blocks; i++) { - descriptor->block_array[i].addr = part->start; - descriptor->block_array[i].size = part->size; - - dmac_unmap_area(phys_to_virt(part->start), part->size, DMA_FROM_DEVICE); - outer_inv_range(part->start, part->start + part->size); - - ++part; - size_total += descriptor->block_array[i].size; - DBG_MSG(6, - ("UMP memory created with VCM. addr 0x%x, size: 0x%x\n", - descriptor->block_array[i].addr, - descriptor->block_array[i].size)); - } - - descriptor->size_bytes = size_total; - descriptor->nr_blocks = num_blocks; - descriptor->ctx = NULL; - - info->num_vcm_blocks += num_blocks; - return 1; -} - -/* - * Free specified UMP memory - */ -static void ump_vcm_free(void *ctx, ump_dd_mem * descriptor) -{ - struct ump_vcm *ump_vcm; - vcm_allocator *info; - - BUG_ON(!descriptor); - BUG_ON(!ctx); - - ump_vcm = (struct ump_vcm*)descriptor->backend_info; - info = (vcm_allocator*)ctx; - - BUG_ON(descriptor->nr_blocks > info->num_vcm_blocks); - - if (down_interruptible(&info->mutex)) { - DBG_MSG(1, ("Failed to get mutex in ump_vcm_free\n")); - return; - } - - DBG_MSG(5, ("Releasing %lu VCM pages\n", descriptor->nr_blocks)); - - info->num_vcm_blocks -= descriptor->nr_blocks; - - up(&info->mutex); - - DBG_MSG(6, ("Freeing physical page by VCM\n")); - vcm_destroy_binding(ump_vcm->vcm_res); - ump_vcm->vcm = NULL; - ump_vcm->vcm_res = NULL; - - kfree(ump_vcm); - vfree(descriptor->block_array); -} - -static void *vcm_res_get(ump_dd_mem *mem, void *args) -{ - struct ump_vcm *ump_vcm; - enum vcm_dev_id vcm_id; - - ump_vcm = (struct ump_vcm*)mem->backend_info; - vcm_id = (enum vcm_dev_id)args; - - if (vcm_reservation_in_vcm - (vcm_find_vcm(vcm_id), ump_vcm->vcm_res) - == S5PVCM_RES_NOT_IN_VCM) - return NULL; - else - return ump_vcm->vcm_res; -} - -static void vcm_attr_set(ump_dd_mem *mem, void *args) -{ - struct ump_vcm *ump_vcm, *ump_vcmh; - - ump_vcm = (struct ump_vcm*)args; - - ump_vcmh = kmalloc(sizeof(struct ump_vcm), GFP_KERNEL); - if (NULL == ump_vcmh) - { - return; - } - - ump_vcmh->dev_id = ump_vcm->dev_id; - ump_vcmh->vcm = ump_vcm->vcm; - ump_vcmh->vcm_res = ump_vcm->vcm_res; - - mem->backend_info= (void*)ump_vcmh; - - return; -} |