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/*
* Copyright (C) 2013-2015 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_kernel_common.h"
#include "mali_osk.h"
#include "mali_pm_domain.h"
#include "mali_pmu.h"
#include "mali_group.h"
#include "mali_pm.h"
static struct mali_pm_domain *mali_pm_domains[MALI_MAX_NUMBER_OF_DOMAINS] =
{ NULL, };
void mali_pm_domain_initialize(void)
{
/* Domains will be initialized/created on demand */
}
void mali_pm_domain_terminate(void)
{
int i;
/* Delete all domains that has been created */
for (i = 0; i < MALI_MAX_NUMBER_OF_DOMAINS; i++) {
mali_pm_domain_delete(mali_pm_domains[i]);
mali_pm_domains[i] = NULL;
}
}
struct mali_pm_domain *mali_pm_domain_create(u32 pmu_mask)
{
struct mali_pm_domain *domain = NULL;
u32 domain_id = 0;
domain = mali_pm_domain_get_from_mask(pmu_mask);
if (NULL != domain) return domain;
MALI_DEBUG_PRINT(2,
("Mali PM domain: Creating Mali PM domain (mask=0x%08X)\n",
pmu_mask));
domain = (struct mali_pm_domain *)_mali_osk_malloc(
sizeof(struct mali_pm_domain));
if (NULL != domain) {
domain->power_is_on = MALI_FALSE;
domain->pmu_mask = pmu_mask;
domain->use_count = 0;
_mali_osk_list_init(&domain->group_list);
_mali_osk_list_init(&domain->l2_cache_list);
domain_id = _mali_osk_fls(pmu_mask) - 1;
/* Verify the domain_id */
MALI_DEBUG_ASSERT(MALI_MAX_NUMBER_OF_DOMAINS > domain_id);
/* Verify that pmu_mask only one bit is set */
MALI_DEBUG_ASSERT((1 << domain_id) == pmu_mask);
mali_pm_domains[domain_id] = domain;
return domain;
} else {
MALI_DEBUG_PRINT_ERROR(("Unable to create PM domain\n"));
}
return NULL;
}
void mali_pm_domain_delete(struct mali_pm_domain *domain)
{
if (NULL == domain) {
return;
}
_mali_osk_list_delinit(&domain->group_list);
_mali_osk_list_delinit(&domain->l2_cache_list);
_mali_osk_free(domain);
}
void mali_pm_domain_add_group(struct mali_pm_domain *domain,
struct mali_group *group)
{
MALI_DEBUG_ASSERT_POINTER(domain);
MALI_DEBUG_ASSERT_POINTER(group);
/*
* Use addtail because virtual group is created last and it needs
* to be at the end of the list (in order to be activated after
* all children.
*/
_mali_osk_list_addtail(&group->pm_domain_list, &domain->group_list);
}
void mali_pm_domain_add_l2_cache(struct mali_pm_domain *domain,
struct mali_l2_cache_core *l2_cache)
{
MALI_DEBUG_ASSERT_POINTER(domain);
MALI_DEBUG_ASSERT_POINTER(l2_cache);
_mali_osk_list_add(&l2_cache->pm_domain_list, &domain->l2_cache_list);
}
struct mali_pm_domain *mali_pm_domain_get_from_mask(u32 mask)
{
u32 id = 0;
if (0 == mask) {
return NULL;
}
id = _mali_osk_fls(mask) - 1;
MALI_DEBUG_ASSERT(MALI_MAX_NUMBER_OF_DOMAINS > id);
/* Verify that pmu_mask only one bit is set */
MALI_DEBUG_ASSERT((1 << id) == mask);
return mali_pm_domains[id];
}
struct mali_pm_domain *mali_pm_domain_get_from_index(u32 id)
{
MALI_DEBUG_ASSERT(MALI_MAX_NUMBER_OF_DOMAINS > id);
return mali_pm_domains[id];
}
u32 mali_pm_domain_ref_get(struct mali_pm_domain *domain)
{
MALI_DEBUG_ASSERT_POINTER(domain);
if (0 == domain->use_count) {
_mali_osk_pm_dev_ref_get_async();
}
++domain->use_count;
MALI_DEBUG_PRINT(4, ("PM domain %p: ref_get, use_count => %u\n", domain, domain->use_count));
/* Return our mask so caller can check this against wanted mask */
return domain->pmu_mask;
}
u32 mali_pm_domain_ref_put(struct mali_pm_domain *domain)
{
MALI_DEBUG_ASSERT_POINTER(domain);
--domain->use_count;
MALI_DEBUG_PRINT(4, ("PM domain %p: ref_put, use_count => %u\n", domain, domain->use_count));
if (0 == domain->use_count) {
_mali_osk_pm_dev_ref_put();
}
/*
* Return the PMU mask which now could be be powered down
* (the bit for this domain).
* This is the responsibility of the caller (mali_pm)
*/
return (0 == domain->use_count ? domain->pmu_mask : 0);
}
#if MALI_STATE_TRACKING
u32 mali_pm_domain_get_id(struct mali_pm_domain *domain)
{
u32 id = 0;
MALI_DEBUG_ASSERT_POINTER(domain);
MALI_DEBUG_ASSERT(0 != domain->pmu_mask);
id = _mali_osk_fls(domain->pmu_mask) - 1;
MALI_DEBUG_ASSERT(MALI_MAX_NUMBER_OF_DOMAINS > id);
/* Verify that pmu_mask only one bit is set */
MALI_DEBUG_ASSERT((1 << id) == domain->pmu_mask);
/* Verify that we have stored the domain at right id/index */
MALI_DEBUG_ASSERT(domain == mali_pm_domains[id]);
return id;
}
#endif
#if defined(DEBUG)
mali_bool mali_pm_domain_all_unused(void)
{
int i;
for (i = 0; i < MALI_MAX_NUMBER_OF_DOMAINS; i++) {
if (NULL == mali_pm_domains[i]) {
/* Nothing to check */
continue;
}
if (MALI_TRUE == mali_pm_domains[i]->power_is_on) {
/* Not ready for suspend! */
return MALI_FALSE;
}
if (0 != mali_pm_domains[i]->use_count) {
/* Not ready for suspend! */
return MALI_FALSE;
}
}
return MALI_TRUE;
}
#endif
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