Commit a24532f8 authored by Rob Rice's avatar Rob Rice Committed by Jassi Brar

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: default avatarRob Rice <rob.rice@broadcom.com>
Reviewed-by: default avatarScott Branden <scott.branden@broadcom.com>
Reviewed-by: default avatarRay Jui <ray.jui@broadcom.com>
Signed-off-by: default avatarJassi Brar <jaswinder.singh@linaro.org>
parent b04f1272
......@@ -123,4 +123,13 @@ config XGENE_SLIMPRO_MBOX
It is used to send short messages between ARM64-bit cores and
the SLIMpro Management Engine, primarily for PM. Say Y here if you
want to use the APM X-Gene SLIMpro IPCM support.
config BCM_PDC_MBOX
tristate "Broadcom PDC Mailbox"
depends on ARM64 || COMPILE_TEST
default ARCH_BCM_IPROC
help
Mailbox implementation for the Broadcom PDC ring manager,
which provides access to various offload engines on Broadcom
SoCs. Say Y here if you want to use the Broadcom PDC.
endif
......@@ -25,3 +25,5 @@ obj-$(CONFIG_TI_MESSAGE_MANAGER) += ti-msgmgr.o
obj-$(CONFIG_XGENE_SLIMPRO_MBOX) += mailbox-xgene-slimpro.o
obj-$(CONFIG_HI6220_MBOX) += hi6220-mailbox.o
obj-$(CONFIG_BCM_PDC_MBOX) += bcm-pdc-mailbox.o
This diff is collapsed.
/*
* 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_ */
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