hikey960: remove mailbox driver

Since this mailbox driver is abandoned, remove it.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

diff --git a/plat/hisilicon/hikey960/hi3660_mailbox.c b/plat/hisilicon/hikey960/hi3660_mailbox.c
deleted file mode 100644 (file)
index aa12932..0000000
--- a/plat/hisilicon/hikey960/hi3660_mailbox.c
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-#include <assert.h>
-#include <debug.h>
-#include <errno.h>
-#include <hi3660_mailbox.h>
-#include <mailbox.h>
-#include <mmio.h>
-#include <string.h>
-
-typedef struct hi3660_chan {
-       unsigned char   src;
-       unsigned char   dst;
-       unsigned char   used;
-} hi3660_chan_t;
-
-static hi3660_chan_t chan_map[MBX_MAX_CHANNELS];
-
-static void hi3660_mbox_check_state(int chan, unsigned int state)
-{
-       unsigned int data;
-
-       data = mmio_read_32(MBX_MODE(chan));
-       assert((data & (MBX_MODE_AUTO_ANSWER | MBX_MODE_AUTO_LINK)) == 0);
-
-       data &= MBX_MODE_STATE_STATUS_MASK;
-       assert(data == state);
-       (void)state;
-}
-
-static int hi3660_mbox_send(int chan, void *message, int len)
-{
-       int i;
-       unsigned int *buf;
-       unsigned int data;
-
-       assert((chan >= 0) && (chan < MBX_MAX_CHANNELS) &&
-              (message != NULL) && (len <= MBX_MAX_DATA_LEN));
-       assert((chan_map[chan].used != 0) &&
-              (chan_map[chan].src != 0) &&
-              (chan_map[chan].dst != 0));
-
-       buf = (unsigned int *)message;
-       len = ((len + 3) >> 2);         /* convert to word count */
-       for (i = 0; i < len; i++)
-               mmio_write_32(MBX_DATA0(chan) + (i << 2), *(buf + i));
-       /* send out */
-       mmio_write_32(MBX_SEND(chan), chan_map[chan].src);
-
-       do {
-               data = mmio_read_32(MBX_ICLR(chan));
-       } while ((data & chan_map[chan].src) == 0);
-       /* ack */
-       mmio_write_32(MBX_ICLR(chan), chan_map[chan].src);
-       return 0;
-}
-
-static int hi3660_mbox_recv(int chan, void *message, int *len)
-{
-       unsigned int *buf, data;
-       int i;
-
-       assert((chan >= 0) && (chan < MBX_MAX_CHANNELS) &&
-              (message != NULL) && (len != NULL));
-       assert((chan_map[chan].used != 0) &&
-              (chan_map[chan].src != 0) &&
-              (chan_map[chan].dst != 0));
-       /* wait IPC event */
-       do {
-               data = mmio_read_32(MBX_MODE(chan));
-       } while ((data & MBX_MODE_STATE_STATUS_MASK) != MBX_MODE_STATE_DEST);
-       /* wait to clear interrupt */
-       do {
-               data = mmio_read_32(MBX_ICLR(chan));
-       } while (data == 0);
-       do {
-               mmio_write_32(MBX_ICLR(chan), chan_map[chan].dst);
-               data = mmio_read_32(MBX_ICLR(chan));
-       } while (data);
-
-       /* read data from IPC */
-       buf = (unsigned int *)message;
-       for (i = 0; i < MBX_MAX_DATA_LEN; i += 4)
-               *(buf + (i >> 2)) = mmio_read_32(MBX_DATA0(chan) + i);
-       *len = MBX_MAX_DATA_LEN;
-       /* ack */
-       mmio_write_32(MBX_SEND(chan), chan_map[chan].dst);
-       return 0;
-}
-
-static int hi3660_mbox_request(int chan, int direction)
-{
-       unsigned int data;
-       unsigned int src, dst;
-
-       assert((chan >= 0) && (chan < MBX_MAX_CHANNELS));
-
-       if (direction == MAILBOX_DIR_TX) {
-               src = CPU_A53;
-               dst = CPU_LPM3;
-       } else if (direction == MAILBOX_DIR_RX) {
-               src = CPU_LPM3;
-               dst = CPU_A53;
-       } else
-               assert(0);
-       mmio_write_32(MBX_SOURCE(chan), src);
-       data = mmio_read_32(MBX_SOURCE(chan));
-       assert(data == src);
-
-       /* mask all interrupts */
-       mmio_write_32(MBX_IMASK(chan), CPU_MASK);
-       /* unmask interrupt */
-       mmio_write_32(MBX_IMASK(chan), ~(src | dst));
-
-       /* set destination */
-       mmio_write_32(MBX_DCLEAR(chan), (~dst) & CPU_MASK);
-       mmio_write_32(MBX_DSET(chan), dst);
-       data = mmio_read_32(MBX_DSTATUS(chan));
-       assert((data & dst) != 0);
-
-       /* clear auto link & auto answer */
-       data = mmio_read_32(MBX_MODE(chan));
-       data &= ~(MBX_MODE_AUTO_ANSWER | MBX_MODE_AUTO_LINK);
-       mmio_write_32(MBX_MODE(chan), data);
-
-       hi3660_mbox_check_state(chan, MBX_MODE_STATE_SOURCE);
-       chan_map[chan].used = 1;
-       chan_map[chan].src = src;
-       chan_map[chan].dst = dst;
-       return 0;
-}
-
-static void hi3660_mbox_free(int chan)
-{
-       assert((chan >= 0) && (chan < MBX_MAX_CHANNELS));
-}
-
-static mbox_ops_t hi3660_mbox_ops = {
-       .send           = hi3660_mbox_send,
-       .recv           = hi3660_mbox_recv,
-       .request        = hi3660_mbox_request,
-       .free           = hi3660_mbox_free,
-};
-
-int hi3660_mbox_init(mbox_params_t *params)
-{
-       int result;
-       unsigned int data;
-
-       assert(params != NULL);
-       result = mbox_init(&hi3660_mbox_ops, params);
-       assert(result == 0);
-       memset(&chan_map, 0, sizeof(chan_map));
-
-       /* unlock mailbox */
-       data = mmio_read_32(IPC_LOCK);
-       while (data == MBX_IPC_LOCKED) {
-               mmio_write_32(IPC_LOCK, MBX_IPC_UNLOCK_MAGIC);
-               data = mmio_read_32(IPC_LOCK);
-       }
-       (void)result;
-       return 0;
-}