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
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;
-}
