/**
* fsl_mc_portal_allocate - Allocates an MC portal
*
* @mc_dev: MC device for which the MC portal is to be allocated
* @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
* MC portal.
* @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
* that wraps the allocated MC portal is to be returned
*
* This function allocates an MC portal from the device's parent DPRC,
* from the corresponding MC bus' pool of MC portals and wraps
* it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
* portal is allocated from its own MC bus.
*/
int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
uint16_t mc_io_flags,
struct fsl_mc_io **new_mc_io)
{
struct fsl_mc_device *mc_bus_dev;
struct fsl_mc_bus *mc_bus;
phys_addr_t mc_portal_phys_addr;
size_t mc_portal_size;
struct fsl_mc_device *mc_adev;
int error = -EINVAL;
struct fsl_mc_resource *resource = NULL;
struct fsl_mc_io *mc_io = NULL;
if (mc_dev->flags & FSL_MC_IS_DPRC) {
mc_bus_dev = mc_dev;
} else {
if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type))
return error;
mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
}
mc_bus = to_fsl_mc_bus(mc_bus_dev);
*new_mc_io = NULL;
error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
if (error < 0)
return error;
mc_adev = resource->data;
if (WARN_ON(!mc_adev))
goto error_cleanup_resource;
if (WARN_ON(mc_adev->obj_desc.region_count == 0))
goto error_cleanup_resource;
mc_portal_phys_addr = mc_adev->regions[0].start;
mc_portal_size = mc_adev->regions[0].end -
mc_adev->regions[0].start + 1;
if (WARN_ON(mc_portal_size != mc_bus_dev->mc_io->portal_size))
goto error_cleanup_resource;
error = fsl_create_mc_io(&mc_bus_dev->dev,
mc_portal_phys_addr,
mc_portal_size, resource,
mc_io_flags, &mc_io);
if (error < 0)
goto error_cleanup_resource;
*new_mc_io = mc_io;
return 0;
error_cleanup_resource:
fsl_mc_resource_free(resource);
return error;
}
/**
* fsl_mc_object_allocate - Allocates a MC object device of the given
* pool type from a given MC bus
*
* @mc_dev: MC device for which the MC object device is to be allocated
* @pool_type: MC bus resource pool type
* @new_mc_dev: Pointer to area where the pointer to the allocated
* MC object device is to be returned
*
* This function allocates a MC object device from the device's parent DPRC,
* from the corresponding MC bus' pool of allocatable MC object devices of
* the given resource type. mc_dev cannot be a DPRC itself.
*
* NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
* portals are allocated using fsl_mc_portal_allocate(), instead of
* this function.
*/
int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
enum fsl_mc_pool_type pool_type,
struct fsl_mc_device **new_mc_adev)
{
struct fsl_mc_device *mc_bus_dev;
struct fsl_mc_bus *mc_bus;
struct fsl_mc_device *mc_adev;
int error = -EINVAL;
struct fsl_mc_resource *resource = NULL;
*new_mc_adev = NULL;
if (WARN_ON(mc_dev->flags & FSL_MC_IS_DPRC))
goto error;
if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type))
goto error;
if (WARN_ON(pool_type == FSL_MC_POOL_DPMCP))
goto error;
mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
mc_bus = to_fsl_mc_bus(mc_bus_dev);
error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
if (error < 0)
goto error;
mc_adev = resource->data;
if (WARN_ON(!mc_adev))
goto error;
*new_mc_adev = mc_adev;
return 0;
error:
if (resource)
fsl_mc_resource_free(resource);
return error;
}
/**
* fsl_mc_portal_allocate - Allocates an MC portal
*
* @mc_dev: MC device for which the MC portal is to be allocated
* @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
* MC portal.
* @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
* that wraps the allocated MC portal is to be returned
*
* This function allocates an MC portal from the device's parent DPRC,
* from the corresponding MC bus' pool of MC portals and wraps
* it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
* portal is allocated from its own MC bus.
*/
int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
u16 mc_io_flags,
struct fsl_mc_io **new_mc_io)
{
struct fsl_mc_device *mc_bus_dev;
struct fsl_mc_bus *mc_bus;
phys_addr_t mc_portal_phys_addr;
size_t mc_portal_size;
struct fsl_mc_device *dpmcp_dev;
int error = -EINVAL;
struct fsl_mc_resource *resource = NULL;
struct fsl_mc_io *mc_io = NULL;
if (mc_dev->flags & FSL_MC_IS_DPRC) {
mc_bus_dev = mc_dev;
} else {
if (WARN_ON(!dev_is_fsl_mc(mc_dev->dev.parent)))
return error;
mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
}
mc_bus = to_fsl_mc_bus(mc_bus_dev);
*new_mc_io = NULL;
error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
if (error < 0)
return error;
error = -EINVAL;
dpmcp_dev = resource->data;
if (WARN_ON(!dpmcp_dev))
goto error_cleanup_resource;
if (dpmcp_dev->obj_desc.ver_major < DPMCP_MIN_VER_MAJOR ||
(dpmcp_dev->obj_desc.ver_major == DPMCP_MIN_VER_MAJOR &&
dpmcp_dev->obj_desc.ver_minor < DPMCP_MIN_VER_MINOR)) {
dev_err(&dpmcp_dev->dev,
"ERROR: Version %d.%d of DPMCP not supported.\n",
dpmcp_dev->obj_desc.ver_major,
dpmcp_dev->obj_desc.ver_minor);
error = -ENOTSUPP;
goto error_cleanup_resource;
}
if (WARN_ON(dpmcp_dev->obj_desc.region_count == 0))
goto error_cleanup_resource;
mc_portal_phys_addr = dpmcp_dev->regions[0].start;
mc_portal_size = dpmcp_dev->regions[0].end -
dpmcp_dev->regions[0].start + 1;
if (WARN_ON(mc_portal_size != mc_bus_dev->mc_io->portal_size))
goto error_cleanup_resource;
error = fsl_create_mc_io(&mc_bus_dev->dev,
mc_portal_phys_addr,
mc_portal_size, dpmcp_dev,
mc_io_flags, &mc_io);
if (error < 0)
goto error_cleanup_resource;
*new_mc_io = mc_io;
return 0;
error_cleanup_resource:
fsl_mc_resource_free(resource);
return error;
}
