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Diffstat (limited to 'drivers/remoteproc/ti_sci_proc.h')
-rw-r--r--drivers/remoteproc/ti_sci_proc.h121
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/remoteproc/ti_sci_proc.h b/drivers/remoteproc/ti_sci_proc.h
new file mode 100644
index 0000000000..ccfc39ec88
--- /dev/null
+++ b/drivers/remoteproc/ti_sci_proc.h
@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Texas Instruments TI-SCI Processor Controller Helper Functions
+ *
+ * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
+ * Lokesh Vutla <lokeshvutla@ti.com>
+ * Suman Anna <s-anna@ti.com>
+ */
+
+#ifndef REMOTEPROC_TI_SCI_PROC_H
+#define REMOTEPROC_TI_SCI_PROC_H
+
+#define TISCI_INVALID_HOST 0xff
+
+/**
+ * struct ti_sci_proc - structure representing a processor control client
+ * @sci: cached TI-SCI protocol handle
+ * @ops: cached TI-SCI proc ops
+ * @proc_id: processor id for the consumer remoteproc device
+ * @host_id: host id to pass the control over for this consumer remoteproc
+ * device
+ */
+struct ti_sci_proc {
+ const struct ti_sci_handle *sci;
+ const struct ti_sci_proc_ops *ops;
+ u8 proc_id;
+ u8 host_id;
+};
+
+static inline int ti_sci_proc_request(struct ti_sci_proc *tsp)
+{
+ int ret;
+
+ debug("%s: proc_id = %d\n", __func__, tsp->proc_id);
+
+ ret = tsp->ops->proc_request(tsp->sci, tsp->proc_id);
+ if (ret)
+ pr_err("ti-sci processor request failed: %d\n", ret);
+ return ret;
+}
+
+static inline int ti_sci_proc_release(struct ti_sci_proc *tsp)
+{
+ int ret;
+
+ debug("%s: proc_id = %d\n", __func__, tsp->proc_id);
+
+ if (tsp->host_id != TISCI_INVALID_HOST)
+ ret = tsp->ops->proc_handover(tsp->sci, tsp->proc_id,
+ tsp->host_id);
+ else
+ ret = tsp->ops->proc_release(tsp->sci, tsp->proc_id);
+
+ if (ret)
+ pr_err("ti-sci processor release failed: %d\n", ret);
+ return ret;
+}
+
+static inline int ti_sci_proc_handover(struct ti_sci_proc *tsp)
+{
+ int ret;
+
+ debug("%s: proc_id = %d\n", __func__, tsp->proc_id);
+
+ ret = tsp->ops->proc_handover(tsp->sci, tsp->proc_id, tsp->host_id);
+ if (ret)
+ pr_err("ti-sci processor handover of %d to %d failed: %d\n",
+ tsp->proc_id, tsp->host_id, ret);
+ return ret;
+}
+
+static inline int ti_sci_proc_get_status(struct ti_sci_proc *tsp,
+ u64 *boot_vector, u32 *cfg_flags,
+ u32 *ctrl_flags, u32 *status_flags)
+{
+ int ret;
+
+ ret = tsp->ops->get_proc_boot_status(tsp->sci, tsp->proc_id,
+ boot_vector, cfg_flags, ctrl_flags,
+ status_flags);
+ if (ret)
+ pr_err("ti-sci processor get_status failed: %d\n", ret);
+
+ debug("%s: proc_id = %d, boot_vector = 0x%llx, cfg_flags = 0x%x, ctrl_flags = 0x%x, sts = 0x%x\n",
+ __func__, tsp->proc_id, *boot_vector, *cfg_flags, *ctrl_flags,
+ *status_flags);
+ return ret;
+}
+
+static inline int ti_sci_proc_set_config(struct ti_sci_proc *tsp,
+ u64 boot_vector,
+ u32 cfg_set, u32 cfg_clr)
+{
+ int ret;
+
+ debug("%s: proc_id = %d, boot_vector = 0x%llx, cfg_set = 0x%x, cfg_clr = 0x%x\n",
+ __func__, tsp->proc_id, boot_vector, cfg_set, cfg_clr);
+
+ ret = tsp->ops->set_proc_boot_cfg(tsp->sci, tsp->proc_id, boot_vector,
+ cfg_set, cfg_clr);
+ if (ret)
+ pr_err("ti-sci processor set_config failed: %d\n", ret);
+ return ret;
+}
+
+static inline int ti_sci_proc_set_control(struct ti_sci_proc *tsp,
+ u32 ctrl_set, u32 ctrl_clr)
+{
+ int ret;
+
+ debug("%s: proc_id = %d, ctrl_set = 0x%x, ctrl_clr = 0x%x\n", __func__,
+ tsp->proc_id, ctrl_set, ctrl_clr);
+
+ ret = tsp->ops->set_proc_boot_ctrl(tsp->sci, tsp->proc_id, ctrl_set,
+ ctrl_clr);
+ if (ret)
+ pr_err("ti-sci processor set_control failed: %d\n", ret);
+ return ret;
+}
+
+#endif /* REMOTEPROC_TI_SCI_PROC_H */