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/*
*
* (C) COPYRIGHT 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.
*
*/
/**
* @file mali_kbase_context.c
* Base kernel context APIs
*/
#include <kbase/src/common/mali_kbase.h>
#include <kbase/src/common/mali_midg_regmap.h>
/**
* @brief Create a kernel base context.
*
* Allocate and init a kernel base context. Calls
* kbase_create_os_context() to setup OS specific structures.
*/
struct kbase_context *kbase_create_context(kbase_device *kbdev)
{
struct kbase_context *kctx;
struct kbase_va_region *pmem_reg;
struct kbase_va_region *tmem_reg;
osk_error osk_err;
mali_error mali_err;
OSK_ASSERT(kbdev != NULL);
/* zero-inited as lot of code assume it's zero'ed out on create */
kctx = osk_calloc(sizeof(*kctx));
if (!kctx)
goto out;
kctx->kbdev = kbdev;
kctx->as_nr = KBASEP_AS_NR_INVALID;
if (kbase_mem_usage_init(&kctx->usage, kctx->kbdev->memdev.per_process_memory_limit >> OSK_PAGE_SHIFT))
{
goto free_kctx;
}
if (kbase_jd_init(kctx))
goto free_memctx;
mali_err = kbasep_js_kctx_init( kctx );
if ( MALI_ERROR_NONE != mali_err )
{
goto free_jd; /* safe to call kbasep_js_kctx_term in this case */
}
mali_err = kbase_event_init(kctx);
if (MALI_ERROR_NONE != mali_err)
goto free_jd;
osk_err = osk_mutex_init(&kctx->reg_lock, OSK_LOCK_ORDER_MEM_REG);
if (OSK_ERR_NONE != osk_err)
goto free_event;
OSK_DLIST_INIT(&kctx->reg_list);
osk_err = osk_phy_allocator_init(&kctx->pgd_allocator, 0, 0, NULL);
if (OSK_ERR_NONE != osk_err)
goto free_region_lock;
mali_err = kbase_mmu_init(kctx);
if(MALI_ERROR_NONE != mali_err)
goto free_phy;
kctx->pgd = kbase_mmu_alloc_pgd(kctx);
if (!kctx->pgd)
goto free_mmu;
if (kbase_create_os_context(&kctx->osctx))
goto free_pgd;
#if (BASE_HW_ISSUE_6787 && BASE_HW_ISSUE_6315)
osk_err = osk_phy_allocator_init(&kctx->nulljob_allocator, 0, 0, NULL);
if (OSK_ERR_NONE != osk_err)
goto free_context;
if (1 != osk_phy_pages_alloc(&kctx->nulljob_allocator, 1, &kctx->nulljob_pa))
goto free_nulljob_allocinit;
kctx->nulljob_va = osk_kmap(kctx->nulljob_pa);
if (NULL == kctx->nulljob_va)
goto free_nulljob_alloc;
/* NOTE: we use page 1 of the reserved address region */
mali_err = kbase_mmu_insert_pages(kctx, (u64)1, &kctx->nulljob_pa, 1, KBASE_REG_CPU_RW|KBASE_REG_GPU_RW);
if(MALI_ERROR_NONE != mali_err)
goto free_nulljob_kmap;
#endif
/* Make sure page 0 is not used... */
pmem_reg = kbase_alloc_free_region(kctx, 1,
KBASE_REG_ZONE_TMEM_BASE - 1, KBASE_REG_ZONE_PMEM);
tmem_reg = kbase_alloc_free_region(kctx, KBASE_REG_ZONE_TMEM_BASE,
KBASE_REG_ZONE_TMEM_SIZE, KBASE_REG_ZONE_TMEM);
if (!pmem_reg || !tmem_reg)
{
if (pmem_reg)
kbase_free_alloced_region(pmem_reg);
if (tmem_reg)
kbase_free_alloced_region(tmem_reg);
kbase_destroy_context(kctx);
return NULL;
}
OSK_DLIST_PUSH_FRONT(&kctx->reg_list, pmem_reg, struct kbase_va_region, link);
OSK_DLIST_PUSH_BACK(&kctx->reg_list, tmem_reg, struct kbase_va_region, link);
return kctx;
#if (BASE_HW_ISSUE_6787 && BASE_HW_ISSUE_6315)
free_nulljob_kmap:
osk_kunmap(kctx->nulljob_pa, kctx->nulljob_va);
free_nulljob_alloc:
osk_phy_pages_free(&kctx->nulljob_allocator, 1, &kctx->nulljob_pa);
free_nulljob_allocinit:
osk_phy_allocator_term(&kctx->nulljob_allocator);
free_context:
kbase_destroy_os_context(&kctx->osctx);
#endif /* (BASE_HW_ISSUE_6787 && BASE_HW_ISSUE_6315) */
free_pgd:
kbase_mmu_free_pgd(kctx);
free_mmu:
kbase_mmu_term(kctx);
free_phy:
osk_phy_allocator_term(&kctx->pgd_allocator);
free_region_lock:
osk_mutex_term(&kctx->reg_lock);
free_event:
kbase_event_cleanup(kctx);
free_jd:
/* Safe to call this one even when didn't initialize (assuming kctx was sufficiently zeroed) */
kbasep_js_kctx_term(kctx);
kbase_jd_exit(kctx);
free_memctx:
kbase_mem_usage_term(&kctx->usage);
free_kctx:
osk_free(kctx);
out:
return NULL;
}
KBASE_EXPORT_TEST_API(kbase_create_context)
/**
* @brief Destroy a kernel base context.
*
* Destroy a kernel base context. Calls kbase_destroy_os_context() to
* free OS specific structures. Will release all outstanding regions.
*/
void kbase_destroy_context(struct kbase_context *kctx)
{
kbase_device *kbdev;
OSK_ASSERT(NULL != kctx);
kbdev = kctx->kbdev;
OSK_ASSERT(NULL != kbdev);
KBASE_TRACE_ADD( kbdev, CORE_CTX_DESTROY, kctx, NULL, 0u, 0u );
/* Ensure the core is powered up for the destroy process */
kbase_pm_context_active(kbdev);
if(kbdev->hwcnt_context == kctx)
{
/* disable the use of the hw counters if the app didn't use the API correctly or crashed */
kbase_uk_hwcnt_setup tmp;
KBASE_TRACE_ADD( kbdev, CORE_CTX_HWINSTR_TERM, kctx, NULL, 0u, 0u );
OSK_PRINT_WARN(OSK_BASE_CTX,
"The privileged process asking for instrumentation forgot to disable it "
"before exiting. Will end instrumentation for them" );
tmp.dump_buffer = 0ull;
kbase_instr_hwcnt_setup(kctx, &tmp);
}
kbase_jd_zap_context(kctx);
kbase_event_cleanup(kctx);
kbase_gpu_vm_lock(kctx);
/* MMU is disabled as part of scheduling out the context */
kbase_mmu_free_pgd(kctx);
osk_phy_allocator_term(&kctx->pgd_allocator);
OSK_DLIST_EMPTY_LIST(&kctx->reg_list, struct kbase_va_region,
link, kbase_free_alloced_region);
kbase_destroy_os_context(&kctx->osctx);
kbase_gpu_vm_unlock(kctx);
/* Safe to call this one even when didn't initialize (assuming kctx was sufficiently zeroed) */
kbasep_js_kctx_term(kctx);
kbase_jd_exit(kctx);
osk_mutex_term(&kctx->reg_lock);
kbase_pm_context_idle(kbdev);
#if (BASE_HW_ISSUE_6787 && BASE_HW_ISSUE_6315)
osk_kunmap(kctx->nulljob_pa, kctx->nulljob_va);
osk_phy_pages_free(&kctx->nulljob_allocator, 1, &kctx->nulljob_pa);
osk_phy_allocator_term(&kctx->nulljob_allocator);
#endif /* (BASE_HW_ISSUE_6787 && BASE_HW_ISSUE_6315) */
kbase_mmu_term(kctx);
kbase_mem_usage_term(&kctx->usage);
osk_free(kctx);
}
mali_error kbase_instr_hwcnt_clear(kbase_context * kctx)
{
mali_error err = MALI_ERROR_FUNCTION_FAILED;
kbase_device *kbdev;
OSK_ASSERT(NULL != kctx);
kbdev = kctx->kbdev;
OSK_ASSERT(NULL != kbdev);
osk_spinlock_lock(&kbdev->hwcnt_lock);
/* Check it's the context previously set up and we're not already dumping */
if (kbdev->hwcnt_context != kctx ||
MALI_TRUE == kbdev->hwcnt_in_progress)
{
goto out;
}
/* Clear the counters */
kbase_reg_write(kbdev, GPU_CONTROL_REG(GPU_COMMAND), GPU_COMMAND_PRFCNT_CLEAR, kctx);
err = MALI_ERROR_NONE;
out:
osk_spinlock_unlock(&kbdev->hwcnt_lock);
return err;
}
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