drivers/gpu/arm/mali400/mali/linux/mali_osk_mali.c

   1 /*
   2  * Copyright (C) 2011-2012 ARM Limited. All rights reserved.
   3  *
   4  * This program is free software and is provided to you under the terms of the GNU General Public License version 2
   5  * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
   6  *
   7  * A copy of the licence is included with the program, and can also be obtained from Free Software
   8  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   9  */
  10
  11 /**
  12  * @file mali_osk_mali.c
  13  * Implementation of the OS abstraction layer which is specific for the Mali kernel device driver
  14  */
  15 #include <linux/kernel.h>
  16 #include <asm/uaccess.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/mali/mali_utgard.h>
  19
  20 #include "mali_osk_mali.h"
  21 #include "mali_kernel_common.h" /* MALI_xxx macros */
  22 #include "mali_osk.h"           /* kernel side OS functions */
  23 #include "mali_uk_types.h"
  24 #include "mali_kernel_linux.h"
  25
  26 _mali_osk_errcode_t _mali_osk_resource_find(u32 addr, _mali_osk_resource_t *res)
  27 {
  28         int i;
  29
  30         if (NULL == mali_platform_device)
  31         {
  32                 /* Not connected to a device */
  33                 return _MALI_OSK_ERR_ITEM_NOT_FOUND;
  34         }
  35
  36         for (i = 0; i < mali_platform_device->num_resources; i++)
  37         {
  38                 if (IORESOURCE_MEM == resource_type(&(mali_platform_device->resource[i])) &&
  39                     mali_platform_device->resource[i].start == addr)
  40                 {
  41                         if (NULL != res)
  42                         {
  43                                 res->base = addr;
  44                                 res->description = mali_platform_device->resource[i].name;
  45
  46                                 /* Any (optional) IRQ resource belonging to this resource will follow */
  47                                 if ((i + 1) < mali_platform_device->num_resources &&
  48                                     IORESOURCE_IRQ == resource_type(&(mali_platform_device->resource[i+1])))
  49                                 {
  50                                         res->irq = mali_platform_device->resource[i+1].start;
  51                                 }
  52                                 else
  53                                 {
  54                                         res->irq = -1;
  55                                 }
  56                         }
  57                         return _MALI_OSK_ERR_OK;
  58                 }
  59         }
  60
  61         return _MALI_OSK_ERR_ITEM_NOT_FOUND;
  62 }
  63
  64 u32 _mali_osk_resource_base_address(void)
  65 {
  66         u32 lowest_addr = 0xFFFFFFFF;
  67         u32 ret = 0;
  68
  69         if (NULL != mali_platform_device)
  70         {
  71                 int i;
  72                 for (i = 0; i < mali_platform_device->num_resources; i++)
  73                 {
  74                         if (mali_platform_device->resource[i].flags & IORESOURCE_MEM &&
  75                             mali_platform_device->resource[i].start < lowest_addr)
  76                         {
  77                                 lowest_addr = mali_platform_device->resource[i].start;
  78                                 ret = lowest_addr;
  79                         }
  80                 }
  81         }
  82
  83         return ret;
  84 }
  85
  86 _mali_osk_errcode_t _mali_osk_device_data_get(struct _mali_osk_device_data *data)
  87 {
  88         MALI_DEBUG_ASSERT_POINTER(data);
  89
  90         if (NULL != mali_platform_device)
  91         {
  92                 struct mali_gpu_device_data* os_data = NULL;
  93
  94                 os_data = (struct mali_gpu_device_data*)mali_platform_device->dev.platform_data;
  95                 if (NULL != os_data)
  96                 {
  97                         /* Copy data from OS dependant struct to Mali neutral struct (identical!) */
  98                         data->dedicated_mem_start = os_data->dedicated_mem_start;
  99                         data->dedicated_mem_size = os_data->dedicated_mem_size;
 100                         data->shared_mem_size = os_data->shared_mem_size;
 101                         data->fb_start = os_data->fb_start;
 102                         data->fb_size = os_data->fb_size;
 103                         data->utilization_interval = os_data->utilization_interval;
 104                         data->utilization_handler = os_data->utilization_handler;
 105                         return _MALI_OSK_ERR_OK;
 106                 }
 107         }
 108
 109         return _MALI_OSK_ERR_ITEM_NOT_FOUND;
 110 }