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xilinx: versal: Add SMC handler for EEMI API 

Add SMC handler for EEMI API calls coming from EL1/EL2.

Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: If0ef2a1f2cfc2747be6b91828371bcbec56b1e15
This commit is contained in:
Tejas Patel 2019-01-09 04:10:29 -08:00 committed by Jolly Shah
parent baccc60e8b
commit ab43d15b91
3 changed files with 212 additions and 0 deletions
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203
plat/xilinx/versal/pm_service/pm_svc_main.c
View File

@ -11,9 +11,15 @@
#include <errno.h>
#include <plat_private.h>
#include <stdbool.h>
#include <common/runtime_svc.h>
#include "pm_api_sys.h"
#include "pm_client.h"
#include "pm_ipi.h"
/* pm_up = true - UP, pm_up = false - DOWN */
static bool pm_up;
/**
* pm_setup() - PM service setup
*
@ -36,7 +42,204 @@ int pm_setup(void)
if (status < 0) {
INFO("BL31: PM Service Init Failed, Error Code %d!\n", status);
ret = status;
} else {
pm_up = true;
}
return ret;
}
/**
* pm_smc_handler() - SMC handler for PM-API calls coming from EL1/EL2.
* @smc_fid - Function Identifier
* @x1 - x4 - Arguments
* @cookie - Unused
* @handler - Pointer to caller's context structure
*
* @return - Unused
*
* Determines that smc_fid is valid and supported PM SMC Function ID from the
* list of pm_api_ids, otherwise completes the request with
* the unknown SMC Function ID
*
* The SMC calls for PM service are forwarded from SIP Service SMC handler
* function with rt_svc_handle signature
*/
uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
uint64_t x4, void *cookie, void *handle, uint64_t flags)
{
enum pm_ret_status ret;
uint32_t pm_arg[4];
/* Handle case where PM wasn't initialized properly */
if (!pm_up)
SMC_RET1(handle, SMC_UNK);
pm_arg[0] = (uint32_t)x1;
pm_arg[1] = (uint32_t)(x1 >> 32);
pm_arg[2] = (uint32_t)x2;
pm_arg[3] = (uint32_t)(x2 >> 32);
switch (smc_fid & FUNCID_NUM_MASK) {
/* PM API Functions */
case PM_SELF_SUSPEND:
ret = pm_self_suspend(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_REQ_SUSPEND:
ret = pm_req_suspend(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_ABORT_SUSPEND:
ret = pm_abort_suspend(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_REQUEST_DEVICE:
ret = pm_request_device(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_RELEASE_DEVICE:
ret = pm_release_device(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_SET_REQUIREMENT:
ret = pm_set_requirement(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_GET_API_VERSION:
{
uint32_t api_version;
ret = pm_get_api_version(&api_version);
SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS |
((uint64_t)api_version << 32));
}
case PM_GET_DEVICE_STATUS:
{
uint32_t buff[3];
ret = pm_get_device_status(pm_arg[0], buff);
SMC_RET2(handle, (uint64_t)ret | ((uint64_t)buff[0] << 32),
(uint64_t)buff[1] | ((uint64_t)buff[2] << 32));
}
case PM_RESET_ASSERT:
ret = pm_reset_assert(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_RESET_GET_STATUS:
{
uint32_t reset_status;
ret = pm_reset_get_status(pm_arg[0], &reset_status);
SMC_RET1(handle, (uint64_t)ret |
((uint64_t)reset_status << 32));
}
case PM_PINCTRL_REQUEST:
ret = pm_pinctrl_request(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_PINCTRL_RELEASE:
ret = pm_pinctrl_release(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_PINCTRL_GET_FUNCTION:
{
uint32_t value = 0;
ret = pm_pinctrl_get_function(pm_arg[0], &value);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
}
case PM_PINCTRL_SET_FUNCTION:
ret = pm_pinctrl_set_function(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_PINCTRL_CONFIG_PARAM_GET:
{
uint32_t value;
ret = pm_pinctrl_get_pin_param(pm_arg[0], pm_arg[1], &value);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
}
case PM_PINCTRL_CONFIG_PARAM_SET:
ret = pm_pinctrl_set_pin_param(pm_arg[0], pm_arg[1], pm_arg[2]);
SMC_RET1(handle, (uint64_t)ret);
case PM_CLOCK_ENABLE:
ret = pm_clock_enable(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_CLOCK_DISABLE:
ret = pm_clock_disable(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_CLOCK_GETSTATE:
{
uint32_t value;
ret = pm_clock_get_state(pm_arg[0], &value);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
}
case PM_CLOCK_SETDIVIDER:
ret = pm_clock_set_divider(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_CLOCK_GETDIVIDER:
{
uint32_t value;
ret = pm_clock_get_divider(pm_arg[0], &value);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
}
case PM_CLOCK_SETPARENT:
ret = pm_clock_set_parent(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_CLOCK_GETPARENT:
{
uint32_t value;
ret = pm_clock_get_parent(pm_arg[0], &value);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
}
case PM_PLL_SET_PARAMETER:
ret = pm_pll_set_param(pm_arg[0], pm_arg[1], pm_arg[2]);
SMC_RET1(handle, (uint64_t)ret);
case PM_PLL_GET_PARAMETER:
{
uint32_t value;
ret = pm_pll_get_param(pm_arg[0], pm_arg[1], &value);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value << 32));
}
case PM_PLL_SET_MODE:
ret = pm_pll_set_mode(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_PLL_GET_MODE:
{
uint32_t mode;
ret = pm_pll_get_mode(pm_arg[0], &mode);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)mode << 32));
}
default:
WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
SMC_RET1(handle, SMC_UNK);
}
}

3
plat/xilinx/versal/pm_service/pm_svc_main.h
View File

@ -10,5 +10,8 @@
#include <pm_common.h>
int pm_setup(void);
uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
uint64_t x4, void *cookie, void *handle,
uint64_t flags);
#endif /* PM_SVC_MAIN_H */

6
plat/xilinx/versal/sip_svc_setup.c
View File

@ -58,6 +58,12 @@ uintptr_t sip_svc_smc_handler(uint32_t smc_fid,
void *handle,
u_register_t flags)
{
/* Let PM SMC handler deal with PM-related requests */
if (is_pm_fid(smc_fid)) {
return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
flags);
}
/* Let PM SMC handler deal with PM-related requests */
switch (smc_fid) {
case VERSAL_SIP_SVC_CALL_COUNT: