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#include <linux/module.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include "trustzone/tz_cross/trustzone.h"
#include "trustzone/tz_cross/ta_system.h"
#include "trustzone/tz_cross/ta_irq.h"
#include "trustzone/kree/system.h"
#include "kree_int.h"
/*************************************************************
* REE Service
*************************************************************/
static irqreturn_t KREE_IrqHandler(int irq, void *dev)
{
uint32_t paramTypes;
MTEEC_PARAM param[4];
TZ_RESULT ret;
param[0].value.a = (uint32_t)irq;
paramTypes = TZ_ParamTypes1(TZPT_VALUE_INPUT);
ret = KREE_TeeServiceCall((KREE_SESSION_HANDLE)MTEE_SESSION_HANDLE_SYSTEM,
TZCMD_SYS_IRQ,
paramTypes, param);
return (ret == TZ_RESULT_SUCCESS) ? IRQ_HANDLED : IRQ_NONE;
}
TZ_RESULT KREE_ServRequestIrq(u32 op, u8 uparam[REE_SERVICE_BUFFER_SIZE])
{
struct ree_service_irq *param = (struct ree_service_irq*)uparam;
int rret;
unsigned long flags;
TZ_RESULT ret = TZ_RESULT_SUCCESS;
unsigned int *token;
if (param->enable)
{
flags = 0;
if (param->flags & MTIRQF_SHARED)
flags |= IRQF_SHARED;
if (param->flags & MTIRQF_TRIGGER_LOW)
flags |= IRQF_TRIGGER_LOW;
else if (param->flags & MTIRQF_TRIGGER_HIGH)
flags |= IRQF_TRIGGER_HIGH;
else if (param->flags & MTIRQF_TRIGGER_RISING)
flags |= IRQF_TRIGGER_RISING;
else if (param->flags & MTIRQF_TRIGGER_FALLING)
flags |= IRQF_TRIGGER_FALLING;
// Generate a token if not already exists. Token is used as device
// for Share IRQ
token = 0;
if (!param->token)
{
token = (unsigned int*)kmalloc(sizeof(unsigned int), GFP_KERNEL);
if (!token)
return TZ_RESULT_ERROR_OUT_OF_MEMORY;
*token = param->irq;
param->token = token;
}
rret = request_irq(param->irq, KREE_IrqHandler, flags, "TEE IRQ", (void*)param->token);
if (rret)
{
if (token)
kfree(token);
if (rret == -ENOMEM)
ret = TZ_RESULT_ERROR_OUT_OF_MEMORY;
else
ret = TZ_RESULT_ERROR_BAD_PARAMETERS;
}
}
else
{
free_irq(param->irq, (void*)param->token);
if (param->token && *(unsigned int*)param->token == param->irq)
kfree((void*)param->token);
}
return ret;
}
TZ_RESULT KREE_ServEnableIrq(u32 op, u8 uparam[REE_SERVICE_BUFFER_SIZE])
{
struct ree_service_irq *param = (struct ree_service_irq*)uparam;
if (param->enable)
enable_irq(param->irq);
else
disable_irq(param->irq);
return TZ_RESULT_SUCCESS;
}
/*************************************************************
* TEE Service
*************************************************************/
static KREE_SESSION_HANDLE irq_session;
void kree_irq_init(void)
{
TZ_RESULT ret;
ret = KREE_CreateSession(TZ_TA_IRQ_UUID, &irq_session);
if (ret != TZ_RESULT_SUCCESS)
{
printk("%s: CreateSession error %d\n", __func__, ret);
return;
}
}
int kree_set_fiq(int irq, unsigned long irq_flags)
{
MTEEC_PARAM param[4];
TZ_RESULT ret;
unsigned long tz_irq_flags = 0;
if (irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
tz_irq_flags |= TZ_IRQF_EDGE_SENSITIVE;
tz_irq_flags |= (irq_flags & IRQF_TRIGGER_FALLING) ? TZ_IRQF_LOW : TZ_IRQF_HIGH;
} else if (irq_flags & (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_LOW)) {
tz_irq_flags |= TZ_IRQF_LEVEL_SENSITIVE;
tz_irq_flags |= (irq_flags & IRQF_TRIGGER_LOW) ? TZ_IRQF_LOW : TZ_IRQF_HIGH;
}
param[0].value.a = irq;
param[1].value.a = tz_irq_flags;
ret = KREE_TeeServiceCall(irq_session, TZCMD_IRQ_SET_FIQ,
TZ_ParamTypes2(TZPT_VALUE_INPUT, TZPT_VALUE_INPUT),
param);
if (ret != TZ_RESULT_SUCCESS)
{
printk("%s error: %s\n", __func__, TZ_GetErrorString(ret));
}
return ret;
}
static void __kree_enable_fiq(int irq, int enable)
{
MTEEC_PARAM param[4];
TZ_RESULT ret;
param[0].value.a = irq;
param[1].value.a = enable;
ret = KREE_TeeServiceCall(irq_session, TZCMD_IRQ_ENABLE_FIQ,
TZ_ParamTypes2(TZPT_VALUE_INPUT, TZPT_VALUE_INPUT),
param);
if (ret != TZ_RESULT_SUCCESS)
{
printk("%s error: %s\n", __func__, TZ_GetErrorString(ret));
}
}
void kree_enable_fiq(int irq)
{
__kree_enable_fiq(irq, 1);
}
void kree_disable_fiq(int irq)
{
__kree_enable_fiq(irq, 0);
}
void kree_query_fiq(int irq, int *enable, int *pending)
{
MTEEC_PARAM param[4];
TZ_RESULT ret;
param[0].value.a = irq;
ret = KREE_TeeServiceCall(irq_session, TZCMD_IRQ_QUERY_FIQ,
TZ_ParamTypes2(TZPT_VALUE_INPUT, TZPT_VALUE_OUTPUT),
param);
if (ret != TZ_RESULT_SUCCESS)
{
printk("%s error: %s\n", __func__, TZ_GetErrorString(ret));
param[1].value.a = 0;
}
*enable = param[1].value.a & 1;
*pending = (param[1].value.a & 2) != 0;
}
unsigned int kree_fiq_get_intack(void)
{
MTEEC_PARAM param[4];
TZ_RESULT ret;
ret = KREE_TeeServiceCall(irq_session, TZCMD_IRQ_GET_INTACK,
TZ_ParamTypes1(TZPT_VALUE_OUTPUT), param);
if (ret == TZ_RESULT_SUCCESS)
return param[0].value.a;
return 0xffff;
}
void kree_fiq_eoi(unsigned int iar)
{
MTEEC_PARAM param[4];
param[0].value.a = iar;
KREE_TeeServiceCall(irq_session, TZCMD_IRQ_EOI,
TZ_ParamTypes1(TZPT_VALUE_INPUT), param);
}
int kree_raise_softfiq(unsigned int mask, unsigned int irq)
{
MTEEC_PARAM param[4];
TZ_RESULT ret;
param[0].value.a = mask;
param[1].value.a = irq;
ret = KREE_TeeServiceCall(irq_session, TZCMD_IRQ_TRIGGER_SGI,
TZ_ParamTypes2(TZPT_VALUE_INPUT, TZPT_VALUE_INPUT),
param);
return (ret == TZ_RESULT_SUCCESS);
}
void kree_irq_mask_all(unsigned int *pmask, unsigned int size)
{
MTEEC_PARAM param[4];
TZ_RESULT ret;
param[0].mem.buffer = pmask;
param[0].mem.size = size;
ret = KREE_TeeServiceCall(irq_session, TZCMD_IRQ_MASK_ALL,
TZ_ParamTypes1(TZPT_MEM_OUTPUT),
param);
if (ret != TZ_RESULT_SUCCESS)
{
printk("%s error: %s\n", __func__, TZ_GetErrorString(ret));
}
}
void kree_irq_mask_restore(unsigned int *pmask, unsigned int size)
{
MTEEC_PARAM param[4];
TZ_RESULT ret;
param[0].mem.buffer = pmask;
param[0].mem.size = size;
ret = KREE_TeeServiceCall(irq_session, TZCMD_IRQ_MASK_RESTORE,
TZ_ParamTypes1(TZPT_MEM_INPUT),
param);
if (ret != TZ_RESULT_SUCCESS)
{
printk("%s error: %s\n", __func__, TZ_GetErrorString(ret));
}
}
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