From: Tomasz Duszynski <tduszynski@marvell.com>
To: <dev@dpdk.org>
Cc: <jerinj@marvell.com>, Tomasz Duszynski <tduszynski@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: [dpdk-dev] [PATCH] common/cnxk: add helpers for reading runplatform
Date: Fri, 1 Oct 2021 22:24:56 +0200 [thread overview]
Message-ID: <20211001202456.2073532-1-tduszynski@marvell.com> (raw)
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 Kollanukkaran <jerinj@marvell.com>
---
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
next reply other threads:[~2021-10-01 20:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-01 20:24 Tomasz Duszynski [this message]
2021-10-08 8:16 ` Jerin Jacob
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