static int dprc_exit(void)
{
int err;
err = dprc_close(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dprc_handle);
if (err < 0) {
printf("dprc_close(): Child failed: %d\n", err);
goto err;
}
err = dprc_destroy_container(root_mc_io, MC_CMD_NO_FLAGS,
root_dprc_handle, child_dprc_id);
if (err < 0) {
printf("dprc_destroy_container() failed: %d\n", err);
goto err;
}
err = dprc_close(root_mc_io, MC_CMD_NO_FLAGS, root_dprc_handle);
if (err < 0) {
printf("dprc_close(): Root failed: %d\n", err);
goto err;
}
if (dflt_mc_io)
free(dflt_mc_io);
if (root_mc_io)
free(root_mc_io);
return 0;
err:
return err;
}
static int get_dprc_icid(struct fsl_mc_io *mc_io,
int container_id, u16 *icid)
{
u16 dprc_handle;
struct dprc_attributes attr;
int error;
error = dprc_open(mc_io, 0, container_id, &dprc_handle);
if (error < 0) {
dev_err(mc_io->dev, "dprc_open() failed: %d\n", error);
return error;
}
memset(&attr, 0, sizeof(attr));
error = dprc_get_attributes(mc_io, 0, dprc_handle, &attr);
if (error < 0) {
dev_err(mc_io->dev, "dprc_get_attributes() failed: %d\n",
error);
goto common_cleanup;
}
*icid = attr.icid;
error = 0;
common_cleanup:
(void)dprc_close(mc_io, 0, dprc_handle);
return error;
}
int fsl_mc_ldpaa_init(bd_t *bis)
{
int i, error = 0;
int dprc_opened = 0, container_id;
int num_child_objects = 0;
error = mc_init();
if (error < 0)
goto error;
error = dprc_get_container_id(dflt_mc_io, MC_CMD_NO_FLAGS,
&container_id);
if (error < 0) {
printf("dprc_get_container_id() failed: %d\n", error);
goto error;
}
debug("fsl-mc: Container id=0x%x\n", container_id);
error = dprc_open(dflt_mc_io, MC_CMD_NO_FLAGS, container_id,
&dflt_dprc_handle);
if (error < 0) {
printf("dprc_open() failed: %d\n", error);
goto error;
}
dprc_opened = true;
error = dprc_get_obj_count(dflt_mc_io,
MC_CMD_NO_FLAGS, dflt_dprc_handle,
&num_child_objects);
if (error < 0) {
printf("dprc_get_obj_count() failed: %d\n", error);
goto error;
}
debug("Total child in container %d = %d\n", container_id,
num_child_objects);
if (num_child_objects != 0) {
/*
* Discover objects currently in the DPRC container in the MC:
*/
for (i = 0; i < num_child_objects; i++)
error = dprc_scan_container_obj(dflt_dprc_handle,
"dpbp", i);
for (i = 0; i < num_child_objects; i++)
error = dprc_scan_container_obj(dflt_dprc_handle,
"dpio", i);
for (i = 0; i < num_child_objects; i++)
error = dprc_scan_container_obj(dflt_dprc_handle,
"dpni", i);
}
error:
if (dprc_opened)
dprc_close(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dprc_handle);
return error;
}
/**
* dprc_remove - callback invoked when a DPRC is being unbound from this driver
*
* @mc_dev: Pointer to fsl-mc device representing the DPRC
*
* It removes the DPRC's child objects from Linux (not from the MC) and
* closes the DPRC device in the MC.
* It tears down the interrupts that were configured for the DPRC device.
* It destroys the interrupt pool associated with this MC bus.
*/
static int dprc_remove(struct fsl_mc_device *mc_dev)
{
int error;
struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
if (WARN_ON(strcmp(mc_dev->obj_desc.type, "dprc") != 0))
return -EINVAL;
if (WARN_ON(!mc_dev->mc_io))
return -EINVAL;
if (WARN_ON(!mc_bus->irq_resources))
return -EINVAL;
if (dev_get_msi_domain(&mc_dev->dev))
dprc_teardown_irq(mc_dev);
device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
if (dev_get_msi_domain(&mc_dev->dev)) {
fsl_mc_cleanup_irq_pool(mc_bus);
dev_set_msi_domain(&mc_dev->dev, NULL);
}
fsl_mc_cleanup_all_resource_pools(mc_dev);
error = dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
if (error < 0)
dev_err(&mc_dev->dev, "dprc_close() failed: %d\n", error);
if (!fsl_mc_is_root_dprc(&mc_dev->dev)) {
fsl_destroy_mc_io(mc_dev->mc_io);
mc_dev->mc_io = NULL;
}
dev_info(&mc_dev->dev, "DPRC device unbound from driver");
return 0;
}
static int dprc_init(void)
{
int err, child_portal_id, container_id;
struct dprc_cfg cfg;
uint64_t mc_portal_offset;
/* Open root container */
err = dprc_get_container_id(root_mc_io, MC_CMD_NO_FLAGS, &container_id);
if (err < 0) {
printf("dprc_get_container_id(): Root failed: %d\n", err);
goto err_root_container_id;
}
#ifdef DEBUG
printf("Root container id = %d\n", container_id);
#endif
err = dprc_open(root_mc_io, MC_CMD_NO_FLAGS, container_id,
&root_dprc_handle);
if (err < 0) {
printf("dprc_open(): Root Container failed: %d\n", err);
goto err_root_open;
}
if (!root_dprc_handle) {
printf("dprc_open(): Root Container Handle is not valid\n");
goto err_root_open;
}
cfg.options = DPRC_CFG_OPT_TOPOLOGY_CHANGES_ALLOWED |
DPRC_CFG_OPT_OBJ_CREATE_ALLOWED |
DPRC_CFG_OPT_ALLOC_ALLOWED;
cfg.icid = DPRC_GET_ICID_FROM_POOL;
cfg.portal_id = 250;
err = dprc_create_container(root_mc_io, MC_CMD_NO_FLAGS,
root_dprc_handle,
&cfg,
&child_dprc_id,
&mc_portal_offset);
if (err < 0) {
printf("dprc_create_container() failed: %d\n", err);
goto err_create;
}
dflt_mc_io = (struct fsl_mc_io *)malloc(sizeof(struct fsl_mc_io));
if (!dflt_mc_io) {
err = -ENOMEM;
printf(" No memory: malloc() failed\n");
goto err_malloc;
}
child_portal_id = MC_PORTAL_OFFSET_TO_PORTAL_ID(mc_portal_offset);
dflt_mc_io->mmio_regs = SOC_MC_PORTAL_ADDR(child_portal_id);
#ifdef DEBUG
printf("MC portal of child DPRC container: %d, physical addr %p)\n",
child_dprc_id, dflt_mc_io->mmio_regs);
#endif
err = dprc_open(dflt_mc_io, MC_CMD_NO_FLAGS, child_dprc_id,
&dflt_dprc_handle);
if (err < 0) {
printf("dprc_open(): Child container failed: %d\n", err);
goto err_child_open;
}
if (!dflt_dprc_handle) {
printf("dprc_open(): Child container Handle is not valid\n");
goto err_child_open;
}
return 0;
err_child_open:
free(dflt_mc_io);
err_malloc:
dprc_destroy_container(root_mc_io, MC_CMD_NO_FLAGS,
root_dprc_handle, child_dprc_id);
err_create:
dprc_close(root_mc_io, MC_CMD_NO_FLAGS, root_dprc_handle);
err_root_open:
err_root_container_id:
return err;
}
/**
* dprc_probe - callback invoked when a DPRC is being bound to this driver
*
* @mc_dev: Pointer to fsl-mc device representing a DPRC
*
* It opens the physical DPRC in the MC.
* It scans the DPRC to discover the MC objects contained in it.
* It creates the interrupt pool for the MC bus associated with the DPRC.
* It configures the interrupts for the DPRC device itself.
*/
static int dprc_probe(struct fsl_mc_device *mc_dev)
{
int error;
size_t region_size;
struct device *parent_dev = mc_dev->dev.parent;
struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
bool mc_io_created = false;
bool msi_domain_set = false;
if (WARN_ON(strcmp(mc_dev->obj_desc.type, "dprc") != 0))
return -EINVAL;
if (WARN_ON(dev_get_msi_domain(&mc_dev->dev)))
return -EINVAL;
if (!mc_dev->mc_io) {
/*
* This is a child DPRC:
*/
if (WARN_ON(!dev_is_fsl_mc(parent_dev)))
return -EINVAL;
if (WARN_ON(mc_dev->obj_desc.region_count == 0))
return -EINVAL;
region_size = mc_dev->regions[0].end -
mc_dev->regions[0].start + 1;
error = fsl_create_mc_io(&mc_dev->dev,
mc_dev->regions[0].start,
region_size,
NULL,
FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
&mc_dev->mc_io);
if (error < 0)
return error;
mc_io_created = true;
/*
* Inherit parent MSI domain:
*/
dev_set_msi_domain(&mc_dev->dev,
dev_get_msi_domain(parent_dev));
msi_domain_set = true;
} else {
/*
* This is a root DPRC
*/
struct irq_domain *mc_msi_domain;
if (WARN_ON(dev_is_fsl_mc(parent_dev)))
return -EINVAL;
error = fsl_mc_find_msi_domain(parent_dev,
&mc_msi_domain);
if (error < 0) {
dev_warn(&mc_dev->dev,
"WARNING: MC bus without interrupt support\n");
} else {
dev_set_msi_domain(&mc_dev->dev, mc_msi_domain);
msi_domain_set = true;
}
}
error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
&mc_dev->mc_handle);
if (error < 0) {
dev_err(&mc_dev->dev, "dprc_open() failed: %d\n", error);
goto error_cleanup_msi_domain;
}
error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle,
&mc_bus->dprc_attr);
if (error < 0) {
dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n",
error);
goto error_cleanup_open;
}
if (mc_bus->dprc_attr.version.major < DPRC_MIN_VER_MAJOR ||
(mc_bus->dprc_attr.version.major == DPRC_MIN_VER_MAJOR &&
mc_bus->dprc_attr.version.minor < DPRC_MIN_VER_MINOR)) {
dev_err(&mc_dev->dev,
"ERROR: DPRC version %d.%d not supported\n",
mc_bus->dprc_attr.version.major,
mc_bus->dprc_attr.version.minor);
error = -ENOTSUPP;
goto error_cleanup_open;
}
mutex_init(&mc_bus->scan_mutex);
/*
* Discover MC objects in DPRC object:
*/
error = dprc_scan_container(mc_dev);
if (error < 0)
goto error_cleanup_open;
/*
* Configure interrupt for the DPRC object associated with this MC bus:
*/
error = dprc_setup_irq(mc_dev);
if (error < 0)
goto error_cleanup_open;
dev_info(&mc_dev->dev, "DPRC device bound to driver");
return 0;
error_cleanup_open:
(void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
error_cleanup_msi_domain:
if (msi_domain_set)
dev_set_msi_domain(&mc_dev->dev, NULL);
if (mc_io_created) {
fsl_destroy_mc_io(mc_dev->mc_io);
mc_dev->mc_io = NULL;
}
return error;
}