platform: tegra: add hsp driver

Copied from linux-t18x repo

Bug 200257382

Change-Id: I0746282a8c73350bb31a0a035e28de466c21e9ac
Signed-off-by: Sivaram Nair <sivaramn@nvidia.com>
Reviewed-on: http://git-master/r/1274692

1 files changed, 100 insertions, 0 deletions

diff --git a/include/linux/tegra-hsp.h b/include/linux/tegra-hsp.h
new file mode 100644
index 000000000..86ed0102f
--- /dev/null
+++ b/include/linux/tegra-hsp.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2014-2016 NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _LINUX_TEGRA_HSP_H
+#define _LINUX_TEGRA_HSP_H
+
+#include <linux/types.h>
+
+enum tegra_hsp_master {
+        HSP_FIRST_MASTER = 1,
+
+        /* secure */
+        HSP_MASTER_SECURE_CCPLEX = HSP_FIRST_MASTER,
+        HSP_MASTER_SECURE_DPMU,
+        HSP_MASTER_SECURE_BPMP,
+        HSP_MASTER_SECURE_SPE,
+        HSP_MASTER_SECURE_SCE,
+        HSP_MASTER_SECURE_DMA,
+        HSP_MASTER_SECURE_TSECA,
+        HSP_MASTER_SECURE_TSECB,
+        HSP_MASTER_SECURE_JTAGM,
+        HSP_MASTER_SECURE_CSITE,
+        HSP_MASTER_SECURE_APE,
+
+        /* non-secure */
+        HSP_MASTER_CCPLEX = HSP_FIRST_MASTER + 16,
+        HSP_MASTER_DPMU,
+        HSP_MASTER_BPMP,
+        HSP_MASTER_SPE,
+        HSP_MASTER_SCE,
+        HSP_MASTER_DMA,
+        HSP_MASTER_TSECA,
+        HSP_MASTER_TSECB,
+        HSP_MASTER_JTAGM,
+        HSP_MASTER_CSITE,
+        HSP_MASTER_APE,
+
+        HSP_LAST_MASTER = HSP_MASTER_APE,
+};
+
+enum tegra_hsp_doorbell {
+        HSP_FIRST_DB = 0,
+        HSP_DB_DPMU = HSP_FIRST_DB,
+        HSP_DB_CCPLEX,
+        HSP_DB_CCPLEX_TZ,
+        HSP_DB_BPMP,
+        HSP_DB_SPE,
+        HSP_DB_SCE,
+        HSP_DB_APE,
+        HSP_LAST_DB = HSP_DB_APE,
+        HSP_NR_DBS,
+};
+
+typedef void (*db_handler_t)(void *data);
+
+int tegra_hsp_init(void);
+
+int tegra_hsp_db_enable_master(enum tegra_hsp_master master);
+
+int tegra_hsp_db_disable_master(enum tegra_hsp_master master);
+
+int tegra_hsp_db_ring(enum tegra_hsp_doorbell dbell);
+
+int tegra_hsp_db_can_ring(enum tegra_hsp_doorbell dbell);
+
+int tegra_hsp_db_add_handler(int master, db_handler_t handler, void *data);
+
+int tegra_hsp_db_del_handler(int master);
+
+#define tegra_hsp_find_master(mask, master)     ((mask) & (1 << (master)))
+
+struct tegra_hsp_sm_pair;
+
+typedef u32 (*tegra_hsp_sm_full_fn)(void *, u32);
+typedef void (*tegra_hsp_sm_empty_fn)(void *, u32);
+
+struct tegra_hsp_sm_pair *of_tegra_hsp_sm_pair_request(
+        const struct device_node *np, u32 index,
+        tegra_hsp_sm_full_fn, tegra_hsp_sm_empty_fn, void *);
+struct tegra_hsp_sm_pair *of_tegra_hsp_sm_pair_by_name(
+        const struct device_node *np, char const *name,
+        tegra_hsp_sm_full_fn, tegra_hsp_sm_empty_fn, void *);
+void tegra_hsp_sm_pair_free(struct tegra_hsp_sm_pair *);
+void tegra_hsp_sm_pair_write(const struct tegra_hsp_sm_pair *, u32 value);
+bool tegra_hsp_sm_pair_is_empty(const struct tegra_hsp_sm_pair *);
+
+#endif