int rproc_load(int id, ulong addr, ulong size)
{
struct udevice *dev = NULL;
struct dm_rproc_uclass_pdata *uc_pdata;
const struct dm_rproc_ops *ops;
int ret;
ret = uclass_get_device_by_seq(UCLASS_REMOTEPROC, id, &dev);
if (ret) {
debug("Unknown remote processor id '%d' requested(%d)\n",
id, ret);
return ret;
}
uc_pdata = dev_get_uclass_platdata(dev);
ops = rproc_get_ops(dev);
if (!ops) {
debug("%s driver has no ops?\n", dev->name);
return -EINVAL;
}
debug("Loading to '%s' from address 0x%08lX size of %lu bytes\n",
uc_pdata->name, addr, size);
if (ops->load)
return ops->load(dev, addr, size);
debug("%s: data corruption?? mandatory function is missing!\n",
dev->name);
return -EINVAL;
};
/**
* rproc_post_probe() - post probe accessor for the uclass
* @dev: deivce we finished probing
*
* initiate init function after the probe is completed. This allows
* the remote processor drivers to split up the initializations between
* probe and init as needed.
*
* Return: if the remote proc driver has a init routine, invokes it and
* hands over the return value. overall, 0 if all went well, else appropriate
* error value.
*/
static int rproc_post_probe(struct udevice *dev)
{
const struct dm_rproc_ops *ops;
ops = rproc_get_ops(dev);
if (!ops) {
debug("%s driver has no ops?\n", dev->name);
return -EINVAL;
}
if (ops->init)
return ops->init(dev);
return 0;
}
/**
* print_remoteproc_list() - print all the remote processor devices
*
* Return: 0 if no error, else returns appropriate error value.
*/
static int print_remoteproc_list(void)
{
struct udevice *dev;
struct uclass *uc;
int ret;
char *type;
ret = uclass_get(UCLASS_REMOTEPROC, &uc);
if (ret) {
printf("Cannot find Remote processor class\n");
return ret;
}
uclass_foreach_dev(dev, uc) {
struct dm_rproc_uclass_pdata *uc_pdata;
const struct dm_rproc_ops *ops = rproc_get_ops(dev);
uc_pdata = dev_get_uclass_platdata(dev);
switch (uc_pdata->mem_type) {
case RPROC_INTERNAL_MEMORY_MAPPED:
type = "internal memory mapped";
break;
default:
type = "unknown";
break;
}
printf("%d - Name:'%s' type:'%s' supports: %s%s%s%s%s%s\n",
dev->seq,
uc_pdata->name,
type,
ops->load ? "load " : "",
ops->start ? "start " : "",
ops->stop ? "stop " : "",
ops->reset ? "reset " : "",
ops->is_running ? "is_running " : "",
ops->ping ? "ping " : "");
}
return 0;
}
/**
* _rproc_ops_wrapper() - wrapper for invoking remote proc driver callback
* @id: id of the remote processor
* @op: one of rproc_ops that indicate what operation to invoke
*
* Most of the checks and verification for remoteproc operations are more
* or less same for almost all operations. This allows us to put a wrapper
* and use the common checks to allow the driver to function appropriately.
*
* Return: 0 if all ok, else appropriate error value.
*/
static int _rproc_ops_wrapper(int id, enum rproc_ops op)
{
struct udevice *dev = NULL;
struct dm_rproc_uclass_pdata *uc_pdata;
const struct dm_rproc_ops *ops;
int (*fn)(struct udevice *dev);
bool mandatory = false;
char *op_str;
int ret;
ret = uclass_get_device_by_seq(UCLASS_REMOTEPROC, id, &dev);
if (ret) {
debug("Unknown remote processor id '%d' requested(%d)\n",
id, ret);
return ret;
}
uc_pdata = dev_get_uclass_platdata(dev);
ops = rproc_get_ops(dev);
if (!ops) {
debug("%s driver has no ops?\n", dev->name);
return -EINVAL;
}
switch (op) {
case RPROC_START:
fn = ops->start;
mandatory = true;
op_str = "Starting";
break;
case RPROC_STOP:
fn = ops->stop;
op_str = "Stopping";
break;
case RPROC_RESET:
fn = ops->reset;
op_str = "Resetting";
break;
case RPROC_RUNNING:
fn = ops->is_running;
op_str = "Checking if running:";
break;
case RPROC_PING:
fn = ops->ping;
op_str = "Pinging";
break;
default:
debug("what is '%d' operation??\n", op);
return -EINVAL;
}
debug("%s %s...\n", op_str, uc_pdata->name);
if (fn)
return fn(dev);
if (mandatory)
debug("%s: data corruption?? mandatory function is missing!\n",
dev->name);
return -ENOSYS;
}
/**
* rproc_pre_probe() - Pre probe accessor for the uclass
* @dev: device for which we are preprobing
*
* Parses and fills up the uclass pdata for use as needed by core and
* remote proc drivers.
*
* Return: 0 if all wernt ok, else appropriate error value.
*/
static int rproc_pre_probe(struct udevice *dev)
{
struct dm_rproc_uclass_pdata *uc_pdata;
const struct dm_rproc_ops *ops;
uc_pdata = dev_get_uclass_platdata(dev);
/* See if we need to populate via fdt */
if (!dev->platdata) {
#if CONFIG_IS_ENABLED(OF_CONTROL)
int node = dev->of_offset;
const void *blob = gd->fdt_blob;
bool tmp;
if (!blob) {
debug("'%s' no dt?\n", dev->name);
return -EINVAL;
}
debug("'%s': using fdt\n", dev->name);
uc_pdata->name = fdt_getprop(blob, node,
"remoteproc-name", NULL);
/* Default is internal memory mapped */
uc_pdata->mem_type = RPROC_INTERNAL_MEMORY_MAPPED;
tmp = fdtdec_get_bool(blob, node,
"remoteproc-internal-memory-mapped");
if (tmp)
uc_pdata->mem_type = RPROC_INTERNAL_MEMORY_MAPPED;
#else
/* Nothing much we can do about this, can we? */
return -EINVAL;
#endif
} else {
struct dm_rproc_uclass_pdata *pdata = dev->platdata;
debug("'%s': using legacy data\n", dev->name);
if (pdata->name)
uc_pdata->name = pdata->name;
uc_pdata->mem_type = pdata->mem_type;
uc_pdata->driver_plat_data = pdata->driver_plat_data;
}
/* Else try using device Name */
if (!uc_pdata->name)
uc_pdata->name = dev->name;
if (!uc_pdata->name) {
debug("Unnamed device!");
return -EINVAL;
}
if (!rproc_name_is_unique(dev, uc_pdata->name)) {
debug("%s duplicate name '%s'\n", dev->name, uc_pdata->name);
return -EINVAL;
}
ops = rproc_get_ops(dev);
if (!ops) {
debug("%s driver has no ops?\n", dev->name);
return -EINVAL;
}
if (!ops->load || !ops->start) {
debug("%s driver has missing mandatory ops?\n", dev->name);
return -EINVAL;
}
return 0;
}
