diff options
Diffstat (limited to 'drivers/soc/qcom/scm-xpu.c')
| -rw-r--r-- | drivers/soc/qcom/scm-xpu.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/soc/qcom/scm-xpu.c b/drivers/soc/qcom/scm-xpu.c new file mode 100644 index 000000000000..200b313610e7 --- /dev/null +++ b/drivers/soc/qcom/scm-xpu.c @@ -0,0 +1,52 @@ +/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <soc/qcom/scm.h> + +#if defined(CONFIG_QCOM_XPU_ERR_FATAL) +#define ERR_FATAL_VAL 0x0 +#elif defined(CONFIG_QCOM_XPU_ERR_NONFATAL) +#define ERR_FATAL_VAL 0x1 +#endif + +#define XPU_ERR_FATAL 0xe + +static int __init xpu_err_fatal_init(void) +{ + int ret, response; + struct { + unsigned int config; + unsigned int spare; + } cmd; + struct scm_desc desc = {0}; + + desc.arginfo = SCM_ARGS(2); + desc.args[0] = cmd.config = ERR_FATAL_VAL; + desc.args[1] = cmd.spare = 0; + + if (!is_scm_armv8()) + ret = scm_call(SCM_SVC_MP, XPU_ERR_FATAL, &cmd, sizeof(cmd), + &response, sizeof(response)); + else + ret = scm_call2(SCM_SIP_FNID(SCM_SVC_MP, XPU_ERR_FATAL), &desc); + + if (ret != 0) + pr_warn("Failed to set XPU violations as fatal errors: %d\n", + ret); + else + pr_info("Configuring XPU violations to be fatal errors\n"); + + return ret; +} +early_initcall(xpu_err_fatal_init); |