From: Jerin Jacob <jerinjacobk@gmail.com>
To: Tomasz Duszynski <tduszynski@marvell.com>,
Ferruh Yigit <ferruh.yigit@intel.com>
Cc: dpdk-dev <dev@dpdk.org>, Jerin Jacob <jerinj@marvell.com>,
Nithin Dabilpuram <ndabilpuram@marvell.com>,
Kiran Kumar K <kirankumark@marvell.com>,
Sunil Kumar Kori <skori@marvell.com>,
Satha Rao <skoteshwar@marvell.com>
Subject: Re: [dpdk-dev] [PATCH] common/cnxk: add helpers for reading runplatform
Date: Fri, 8 Oct 2021 13:46:57 +0530 [thread overview]
Message-ID: <CALBAE1Oc4-Y72EaX8sLpCfOwqR=thVfJDFZbQWsLQ3WPOa4iEw@mail.gmail.com> (raw)
In-Reply-To: <20211001202456.2073532-1-tduszynski@marvell.com>
On Sat, Oct 2, 2021 at 1:55 AM Tomasz Duszynski <tduszynski@marvell.com> wrote:
>
> Add helper functions that allow one to check platform
> ROC is running on. Platform type is retrieved from device
> tree attribute runplatform which is updated by EBF accordingly.
>
> Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
> Reviewed-by: Jerin Jacob <jerinj@marvell.com>
Applied to dpdk-next-net-mrvl/for-next-net. Thanks
> ---
> drivers/common/cnxk/roc_model.c | 53 ++++++++++++++++++++++++++++++++-
> drivers/common/cnxk/roc_model.h | 29 ++++++++++++++++++
> 2 files changed, 81 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/common/cnxk/roc_model.c b/drivers/common/cnxk/roc_model.c
> index e5aeabe2e2..447dc6e8bc 100644
> --- a/drivers/common/cnxk/roc_model.c
> +++ b/drivers/common/cnxk/roc_model.c
> @@ -178,6 +178,55 @@ detect_invalid_config(void)
> #endif
> }
>
> +static uint64_t
> +env_lookup_flag(const char *name)
> +{
> + unsigned int i;
> + struct {
> + const char *name;
> + uint64_t flag;
> + } envs[] = {
> + {"HW_PLATFORM", ROC_ENV_HW},
> + {"EMUL_PLATFORM", ROC_ENV_EMUL},
> + {"ASIM_PLATFORM", ROC_ENV_ASIM},
> + };
> +
> + for (i = 0; i < PLT_DIM(envs); i++)
> + if (!strncmp(envs[i].name, name, strlen(envs[i].name)))
> + return envs[i].flag;
> +
> + return 0;
> +}
> +
> +static void
> +of_env_get(struct roc_model *model)
> +{
> + const char *const path = "/proc/device-tree/soc@0/runplatform";
> + uint64_t flag;
> + FILE *fp;
> +
> + fp = fopen(path, "r");
> + if (!fp) {
> + plt_err("Failed to open %s", path);
> + return;
> + }
> +
> + if (!fgets(model->env, sizeof(model->env), fp)) {
> + plt_err("Failed to read %s", path);
> + goto err;
> + }
> +
> + flag = env_lookup_flag(model->env);
> + if (flag == 0) {
> + plt_err("Unknown platform: %s", model->env);
> + goto err;
> + }
> +
> + model->flag |= flag;
> +err:
> + fclose(fp);
> +}
> +
> int
> roc_model_init(struct roc_model *model)
> {
> @@ -197,8 +246,10 @@ roc_model_init(struct roc_model *model)
> if (!populate_model(model, midr))
> goto err;
>
> + of_env_get(model);
> +
> rc = 0;
> - plt_info("RoC Model: %s", model->name);
> + plt_info("RoC Model: %s (%s)", model->name, model->env);
> roc_model = model;
> err:
> return rc;
> diff --git a/drivers/common/cnxk/roc_model.h b/drivers/common/cnxk/roc_model.h
> index a54f435b46..3779a88bca 100644
> --- a/drivers/common/cnxk/roc_model.h
> +++ b/drivers/common/cnxk/roc_model.h
> @@ -23,10 +23,15 @@ struct roc_model {
> #define ROC_MODEL_CN106xx_A0 BIT_ULL(20)
> #define ROC_MODEL_CNF105xx_A0 BIT_ULL(21)
> #define ROC_MODEL_CNF105xxN_A0 BIT_ULL(22)
> +/* Following flags describe platform code is running on */
> +#define ROC_ENV_HW BIT_ULL(61)
> +#define ROC_ENV_EMUL BIT_ULL(62)
> +#define ROC_ENV_ASIM BIT_ULL(63)
>
> uint64_t flag;
> #define ROC_MODEL_STR_LEN_MAX 128
> char name[ROC_MODEL_STR_LEN_MAX];
> + char env[ROC_MODEL_STR_LEN_MAX];
> } __plt_cache_aligned;
>
> #define ROC_MODEL_CN96xx_Ax (ROC_MODEL_CN96xx_A0 | ROC_MODEL_CN96xx_B0)
> @@ -158,6 +163,30 @@ roc_model_is_cnf10kb_a0(void)
> return roc_model->flag & ROC_MODEL_CNF105xxN_A0;
> }
>
> +static inline bool
> +roc_env_is_hw(void)
> +{
> + return roc_model->flag & ROC_ENV_HW;
> +}
> +
> +static inline bool
> +roc_env_is_emulator(void)
> +{
> + return roc_model->flag & ROC_ENV_EMUL;
> +}
> +
> +static inline bool
> +roc_env_is_asim(void)
> +{
> + return roc_model->flag & ROC_ENV_ASIM;
> +}
> +
> +static inline const char *
> +roc_env_get(void)
> +{
> + return roc_model->env;
> +}
> +
> int roc_model_init(struct roc_model *model);
>
> #endif
> --
> 2.25.1
>
prev parent reply other threads:[~2021-10-08 8:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-01 20:24 Tomasz Duszynski
2021-10-08 8:16 ` Jerin Jacob [this message]
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