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u-boot/drivers/mailbox/sandbox-mbox.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0
mailbox: implement a sandbox test This adds a sandbox mailbox implementation (provider), a test client device, instantiates them both from Sandbox's DT, and adds a DM test that excercises everything. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> # v1
2016-05-16 23:41:37 +00:00
/*
* Copyright (c) 2016, NVIDIA CORPORATION.
*/
#include <common.h>
#include <dm.h>
mailbox: rename headers Rename mailbox*.h to match the naming convention requested during review of the new reset subsystem. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-06-17 15:43:56 +00:00
#include <mailbox-uclass.h>
dm: core: Create a new header file for 'compat' features At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-03 14:36:16 +00:00
#include <malloc.h>
mailbox: implement a sandbox test This adds a sandbox mailbox implementation (provider), a test client device, instantiates them both from Sandbox's DT, and adds a DM test that excercises everything. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> # v1
2016-05-16 23:41:37 +00:00
#include <asm/io.h>
#include <asm/mbox.h>
#define SANDBOX_MBOX_CHANNELS 2
struct sandbox_mbox_chan {
bool rx_msg_valid;
uint32_t rx_msg;
};
struct sandbox_mbox {
struct sandbox_mbox_chan chans[SANDBOX_MBOX_CHANNELS];
};
static int sandbox_mbox_request(struct mbox_chan *chan)
{
debug("%s(chan=%p)\n", __func__, chan);
if (chan->id >= SANDBOX_MBOX_CHANNELS)
return -EINVAL;
return 0;
}
static int sandbox_mbox_free(struct mbox_chan *chan)
{
debug("%s(chan=%p)\n", __func__, chan);
return 0;
}
static int sandbox_mbox_send(struct mbox_chan *chan, const void *data)
{
struct sandbox_mbox *sbm = dev_get_priv(chan->dev);
const uint32_t *pmsg = data;
debug("%s(chan=%p, data=%p)\n", __func__, chan, data);
sbm->chans[chan->id].rx_msg = *pmsg ^ SANDBOX_MBOX_PING_XOR;
sbm->chans[chan->id].rx_msg_valid = true;
return 0;
}
static int sandbox_mbox_recv(struct mbox_chan *chan, void *data)
{
struct sandbox_mbox *sbm = dev_get_priv(chan->dev);
uint32_t *pmsg = data;
debug("%s(chan=%p, data=%p)\n", __func__, chan, data);
if (!sbm->chans[chan->id].rx_msg_valid)
return -ENODATA;
*pmsg = sbm->chans[chan->id].rx_msg;
sbm->chans[chan->id].rx_msg_valid = false;
return 0;
}
static int sandbox_mbox_bind(struct udevice *dev)
{
debug("%s(dev=%p)\n", __func__, dev);
return 0;
}
static int sandbox_mbox_probe(struct udevice *dev)
{
debug("%s(dev=%p)\n", __func__, dev);
return 0;
}
static const struct udevice_id sandbox_mbox_ids[] = {
{ .compatible = "sandbox,mbox" },
{ }
};
struct mbox_ops sandbox_mbox_mbox_ops = {
.request = sandbox_mbox_request,
mailbox: Rename free() to rfree() This function name conflicts with our desire to #define free() to something else on sandbox. Since it deals with resources, rename it to rfree(). Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-03 14:35:50 +00:00
.rfree = sandbox_mbox_free,
mailbox: implement a sandbox test This adds a sandbox mailbox implementation (provider), a test client device, instantiates them both from Sandbox's DT, and adds a DM test that excercises everything. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> # v1
2016-05-16 23:41:37 +00:00
.send = sandbox_mbox_send,
.recv = sandbox_mbox_recv,
};
U_BOOT_DRIVER(sandbox_mbox) = {
.name = "sandbox_mbox",
.id = UCLASS_MAILBOX,
.of_match = sandbox_mbox_ids,
.bind = sandbox_mbox_bind,
.probe = sandbox_mbox_probe,
.priv_auto_alloc_size = sizeof(struct sandbox_mbox),
.ops = &sandbox_mbox_mbox_ops,
};
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