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/*
*
* (C) COPYRIGHT 2011-2012 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.
*
*/
/**
* @file mali_kbase_cpuprops.c
* Base kernel property query APIs
*/
#include "mali_kbase.h"
#include "mali_kbase_cpuprops.h"
#include "mali_kbase_uku.h"
#include <kbase/mali_kbase_config.h>
#include <linux/cache.h>
#include <asm/cputype.h>
#define L1_DCACHE_LINE_SIZE_LOG2 L1_CACHE_SHIFT
/**
* @brief Macros used to extract cpu id info
* @see Doc's for Main ID register
*/
#define KBASE_CPUPROPS_ID_GET_REV(cpuid) ( (cpuid) & 0x0F ) /* [3:0] Revision */
#define KBASE_CPUPROPS_ID_GET_PART_NR(cpuid)( ((cpuid) >> 4) & 0xFFF ) /* [15:4] Part number */
#define KBASE_CPUPROPS_ID_GET_ARCH(cpuid) ( ((cpuid) >> 16) & 0x0F ) /* [19:16] Architecture */
#define KBASE_CPUPROPS_ID_GET_VARIANT(cpuid)( ((cpuid) >> 20) & 0x0F ) /* [23:20] Variant */
#define KBASE_CPUPROPS_ID_GET_CODE(cpuid) ( ((cpuid) >> 24) & 0xFF ) /* [31:23] ASCII code of implementer trademark */
/*Below value sourced from OSK*/
#define L1_DCACHE_SIZE ((u32)0x00008000)
/**
* @brief Retrieves detailed CPU info from given cpu_val ( ID reg )
*
* @param kbase_props CPU props to be filled-in with cpu id info
* @param cpu_val CPU ID info
*
*/
static void kbasep_cpuprops_uk_get_cpu_id_info(kbase_uk_cpuprops * const kbase_props, u32 cpu_val)
{
kbase_props->props.cpu_id.id = cpu_val;
kbase_props->props.cpu_id.rev = KBASE_CPUPROPS_ID_GET_REV(cpu_val);
kbase_props->props.cpu_id.part = KBASE_CPUPROPS_ID_GET_PART_NR(cpu_val);
kbase_props->props.cpu_id.arch = KBASE_CPUPROPS_ID_GET_ARCH(cpu_val);
kbase_props->props.cpu_id.variant = KBASE_CPUPROPS_ID_GET_VARIANT(cpu_val);
kbase_props->props.cpu_id.implementer = KBASE_CPUPROPS_ID_GET_CODE(cpu_val);
}
int kbase_cpuprops_get_default_clock_speed(u32 * const clock_speed)
{
KBASE_DEBUG_ASSERT(NULL != clock_speed);
*clock_speed = 100;
return 0;
}
mali_error kbase_cpuprops_uk_get_props(kbase_context *kctx, kbase_uk_cpuprops * const kbase_props)
{
int result;
kbase_cpuprops_clock_speed_function kbase_cpuprops_uk_get_clock_speed;
kbase_props->props.cpu_l1_dcache_line_size_log2 = L1_DCACHE_LINE_SIZE_LOG2;
kbase_props->props.cpu_l1_dcache_size = L1_DCACHE_SIZE;
kbase_props->props.cpu_flags = BASE_CPU_PROPERTY_FLAG_LITTLE_ENDIAN;
kbase_props->props.nr_cores = NR_CPUS;
kbase_props->props.cpu_page_size_log2 = PAGE_SHIFT;
kbase_props->props.available_memory_size = totalram_pages << PAGE_SHIFT;
kbasep_cpuprops_uk_get_cpu_id_info(kbase_props, read_cpuid_id());
kbase_cpuprops_uk_get_clock_speed = (kbase_cpuprops_clock_speed_function) kbasep_get_config_value(kctx->kbdev, kctx->kbdev->config_attributes, KBASE_CONFIG_ATTR_CPU_SPEED_FUNC);
result = kbase_cpuprops_uk_get_clock_speed(&kbase_props->props.max_cpu_clock_speed_mhz);
if (result != 0)
return MALI_ERROR_FUNCTION_FAILED;
return MALI_ERROR_NONE;
}
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