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Tegra186: mce: add the mce_update_cstate_info() helper function 

This patch adds a helper function to the MCE driver to allow its
clients to issue UPDATE_CSTATE_INFO requests, without having to
setup the CPU context struct.

We introduced a struct to encapsulate the request parameters, that
clients can pass on to the MCE driver. The MCE driver gets the
parameters from the struct and programs the hardware accordingly.

Change-Id: I02bce57506c4ccd90da82127805d6b564375cbf1
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2017-03-23 17:32:20 -07:00
parent ddc1c56f0b
commit 87a1df7361
2 changed files with 32 additions and 0 deletions
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19
plat/nvidia/tegra/soc/t186/drivers/include/mce.h
View File

@ -101,6 +101,24 @@ typedef enum mce_cmd {
#define MCE_CMD_MASK 0xFF
/*******************************************************************************
* Struct to prepare UPDATE_CSTATE_INFO request
******************************************************************************/
typedef struct mce_cstate_info {
/* cluster cstate value */
uint32_t cluster;
/* ccplex cstate value */
uint32_t ccplex;
/* system cstate value */
uint32_t system;
/* force system state? */
uint8_t system_state_force;
/* wake mask value */
uint32_t wake_mask;
/* update the wake mask? */
uint8_t update_wake_mask;
} mce_cstate_info_t;
/*******************************************************************************
* Macros to prepare CSTATE info request
******************************************************************************/
@ -322,6 +340,7 @@ int mce_update_gsc_videomem(void);
int mce_update_gsc_tzdram(void);
int mce_update_gsc_tzram(void);
__dead2 void mce_enter_ccplex_state(uint32_t state_idx);
void mce_update_cstate_info(mce_cstate_info_t *cstate);
void mce_verify_firmware_version(void);
/* declarations for ARI/NVG handler functions */

13
plat/nvidia/tegra/soc/t186/drivers/mce/mce.c
View File

@ -448,6 +448,19 @@ __dead2 void mce_enter_ccplex_state(uint32_t state_idx)
panic();
}
/*******************************************************************************
* Handler to issue the UPDATE_CSTATE_INFO request
******************************************************************************/
void mce_update_cstate_info(mce_cstate_info_t *cstate)
{
arch_mce_ops_t *ops = mce_get_curr_cpu_ops();
/* issue the UPDATE_CSTATE_INFO request */
ops->update_cstate_info(mce_get_curr_cpu_ari_base(), cstate->cluster,
cstate->ccplex, cstate->system, cstate->system_state_force,
cstate->wake_mask, cstate->update_wake_mask);
}
/*******************************************************************************
* Handler to read the MCE firmware version and check if it is compatible
* with interface header the BL3-1 was compiled against