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authorRob Rice <rrice@broadcom.com>2016-06-30 22:59:23 +0300
committerJassi Brar <jaswinder.singh@linaro.org>2016-07-28 07:04:47 +0300
commita24532f8d17b7211dfb0259920edfcffc8306606 (patch)
tree9c1efa9b105ddcd10a733a250bf023bc1a18b7a6 /include/linux/mailbox/brcm-message.h
parentb04f127286e6fdbd731681f9564b0a0cd36e4bbf (diff)
downloadlinux-a24532f8d17b7211dfb0259920edfcffc8306606.tar.xz
mailbox: Add Broadcom PDC mailbox driver
The Broadcom PDC mailbox driver is a mailbox controller that manages data transfers to and from one or more offload engines. Signed-off-by: Rob Rice <rob.rice@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'include/linux/mailbox/brcm-message.h')
-rw-r--r--include/linux/mailbox/brcm-message.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/include/linux/mailbox/brcm-message.h b/include/linux/mailbox/brcm-message.h
new file mode 100644
index 000000000000..6b55c938b401
--- /dev/null
+++ b/include/linux/mailbox/brcm-message.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2016 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Common header for Broadcom mailbox messages which is shared across
+ * Broadcom SoCs and Broadcom mailbox client drivers.
+ */
+
+#ifndef _LINUX_BRCM_MESSAGE_H_
+#define _LINUX_BRCM_MESSAGE_H_
+
+#include <linux/scatterlist.h>
+
+enum brcm_message_type {
+ BRCM_MESSAGE_UNKNOWN = 0,
+ BRCM_MESSAGE_SPU,
+ BRCM_MESSAGE_SBA,
+ BRCM_MESSAGE_MAX,
+};
+
+struct brcm_sba_command {
+ u64 cmd;
+#define BRCM_SBA_CMD_TYPE_A BIT(0)
+#define BRCM_SBA_CMD_TYPE_B BIT(1)
+#define BRCM_SBA_CMD_TYPE_C BIT(2)
+#define BRCM_SBA_CMD_HAS_RESP BIT(3)
+#define BRCM_SBA_CMD_HAS_OUTPUT BIT(4)
+ u64 flags;
+ dma_addr_t input;
+ size_t input_len;
+ dma_addr_t resp;
+ size_t resp_len;
+ dma_addr_t output;
+ size_t output_len;
+};
+
+struct brcm_message {
+ enum brcm_message_type type;
+ union {
+ struct {
+ struct scatterlist *src;
+ struct scatterlist *dst;
+ } spu;
+ struct {
+ struct brcm_sba_command *cmds;
+ unsigned int cmds_count;
+ } sba;
+ };
+ void *ctx;
+ int error;
+};
+
+#endif /* _LINUX_BRCM_MESSAGE_H_ */