+++ /dev/null
-/*
- * Freescale Management Complex (MC) bus driver
- *
- * Copyright (C) 2014 Freescale Semiconductor, Inc.
- * Author: German Rivera <German.Rivera@freescale.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include "../include/mc-private.h"
-#include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/limits.h>
-#include <linux/bitops.h>
-#include <linux/msi.h>
-#include "../include/dpmng.h"
-#include "../include/mc-sys.h"
-#include "dprc-cmd.h"
-
-static struct kmem_cache *mc_dev_cache;
-
-/**
- * fsl_mc_bus_match - device to driver matching callback
- * @dev: the MC object device structure to match against
- * @drv: the device driver to search for matching MC object device id
- * structures
- *
- * Returns 1 on success, 0 otherwise.
- */
-static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
-{
- const struct fsl_mc_device_id *id;
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
- bool found = false;
-
- if (WARN_ON(!fsl_mc_bus_exists()))
- goto out;
-
- if (!mc_drv->match_id_table)
- goto out;
-
- /*
- * If the object is not 'plugged' don't match.
- * Only exception is the root DPRC, which is a special case.
- */
- if ((mc_dev->obj_desc.state & DPRC_OBJ_STATE_PLUGGED) == 0 &&
- !fsl_mc_is_root_dprc(&mc_dev->dev))
- goto out;
-
- /*
- * Traverse the match_id table of the given driver, trying to find
- * a matching for the given MC object device.
- */
- for (id = mc_drv->match_id_table; id->vendor != 0x0; id++) {
- if (id->vendor == mc_dev->obj_desc.vendor &&
- strcmp(id->obj_type, mc_dev->obj_desc.type) == 0) {
- found = true;
-
- break;
- }
- }
-
-out:
- dev_dbg(dev, "%smatched\n", found ? "" : "not ");
- return found;
-}
-
-/**
- * fsl_mc_bus_uevent - callback invoked when a device is added
- */
-static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s",
- mc_dev->obj_desc.vendor,
- mc_dev->obj_desc.type))
- return -ENOMEM;
-
- return 0;
-}
-
-static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
- mc_dev->obj_desc.type);
-}
-static DEVICE_ATTR_RO(modalias);
-
-static struct attribute *fsl_mc_dev_attrs[] = {
- &dev_attr_modalias.attr,
- NULL,
-};
-
-static const struct attribute_group fsl_mc_dev_group = {
- .attrs = fsl_mc_dev_attrs,
-};
-
-static const struct attribute_group *fsl_mc_dev_groups[] = {
- &fsl_mc_dev_group,
- NULL,
-};
-
-struct bus_type fsl_mc_bus_type = {
- .name = "fsl-mc",
- .match = fsl_mc_bus_match,
- .uevent = fsl_mc_bus_uevent,
- .dev_groups = fsl_mc_dev_groups,
-};
-EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
-
-static atomic_t root_dprc_count = ATOMIC_INIT(0);
-
-static int fsl_mc_driver_probe(struct device *dev)
-{
- struct fsl_mc_driver *mc_drv;
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- int error;
-
- if (WARN_ON(!dev->driver))
- return -EINVAL;
-
- mc_drv = to_fsl_mc_driver(dev->driver);
- if (WARN_ON(!mc_drv->probe))
- return -EINVAL;
-
- error = mc_drv->probe(mc_dev);
- if (error < 0) {
- dev_err(dev, "MC object device probe callback failed: %d\n",
- error);
- return error;
- }
-
- return 0;
-}
-
-static int fsl_mc_driver_remove(struct device *dev)
-{
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- int error;
-
- if (WARN_ON(!dev->driver))
- return -EINVAL;
-
- error = mc_drv->remove(mc_dev);
- if (error < 0) {
- dev_err(dev,
- "MC object device remove callback failed: %d\n",
- error);
- return error;
- }
-
- return 0;
-}
-
-static void fsl_mc_driver_shutdown(struct device *dev)
-{
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- mc_drv->shutdown(mc_dev);
-}
-
-/**
- * __fsl_mc_driver_register - registers a child device driver with the
- * MC bus
- *
- * This function is implicitly invoked from the registration function of
- * fsl_mc device drivers, which is generated by the
- * module_fsl_mc_driver() macro.
- */
-int __fsl_mc_driver_register(struct fsl_mc_driver *mc_driver,
- struct module *owner)
-{
- int error;
-
- mc_driver->driver.owner = owner;
- mc_driver->driver.bus = &fsl_mc_bus_type;
-
- if (mc_driver->probe)
- mc_driver->driver.probe = fsl_mc_driver_probe;
-
- if (mc_driver->remove)
- mc_driver->driver.remove = fsl_mc_driver_remove;
-
- if (mc_driver->shutdown)
- mc_driver->driver.shutdown = fsl_mc_driver_shutdown;
-
- error = driver_register(&mc_driver->driver);
- if (error < 0) {
- pr_err("driver_register() failed for %s: %d\n",
- mc_driver->driver.name, error);
- return error;
- }
-
- pr_info("MC object device driver %s registered\n",
- mc_driver->driver.name);
- return 0;
-}
-EXPORT_SYMBOL_GPL(__fsl_mc_driver_register);
-
-/**
- * fsl_mc_driver_unregister - unregisters a device driver from the
- * MC bus
- */
-void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
-{
- driver_unregister(&mc_driver->driver);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
-
-/**
- * fsl_mc_bus_exists - check if a root dprc exists
- */
-bool fsl_mc_bus_exists(void)
-{
- return atomic_read(&root_dprc_count) > 0;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_bus_exists);
-
-/**
-* fsl_mc_get_root_dprc - function to traverse to the root dprc
-*/
-static void fsl_mc_get_root_dprc(struct device *dev,
- struct device **root_dprc_dev)
-{
- if (WARN_ON(!dev)) {
- *root_dprc_dev = NULL;
- } else if (WARN_ON(dev->bus != &fsl_mc_bus_type)) {
- *root_dprc_dev = NULL;
- } else {
- *root_dprc_dev = dev;
- while ((*root_dprc_dev)->parent->bus == &fsl_mc_bus_type)
- *root_dprc_dev = (*root_dprc_dev)->parent;
- }
-}
-
-static int get_dprc_attr(struct fsl_mc_io *mc_io,
- int container_id, struct dprc_attributes *attr)
-{
- u16 dprc_handle;
- 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(struct dprc_attributes));
- 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;
- }
-
- error = 0;
-
-common_cleanup:
- (void)dprc_close(mc_io, 0, dprc_handle);
- return error;
-}
-
-static int get_dprc_icid(struct fsl_mc_io *mc_io,
- int container_id, u16 *icid)
-{
- struct dprc_attributes attr;
- int error;
-
- error = get_dprc_attr(mc_io, container_id, &attr);
- if (error == 0)
- *icid = attr.icid;
-
- return error;
-}
-
-static int get_dprc_version(struct fsl_mc_io *mc_io,
- int container_id, u16 *major, u16 *minor)
-{
- struct dprc_attributes attr;
- int error;
-
- error = get_dprc_attr(mc_io, container_id, &attr);
- if (error == 0) {
- *major = attr.version.major;
- *minor = attr.version.minor;
- }
-
- return error;
-}
-
-static int translate_mc_addr(struct fsl_mc_device *mc_dev,
- enum dprc_region_type mc_region_type,
- u64 mc_offset, phys_addr_t *phys_addr)
-{
- int i;
- struct device *root_dprc_dev;
- struct fsl_mc *mc;
-
- fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
- if (WARN_ON(!root_dprc_dev))
- return -EINVAL;
- mc = dev_get_drvdata(root_dprc_dev->parent);
-
- if (mc->num_translation_ranges == 0) {
- /*
- * Do identity mapping:
- */
- *phys_addr = mc_offset;
- return 0;
- }
-
- for (i = 0; i < mc->num_translation_ranges; i++) {
- struct fsl_mc_addr_translation_range *range =
- &mc->translation_ranges[i];
-
- if (mc_region_type == range->mc_region_type &&
- mc_offset >= range->start_mc_offset &&
- mc_offset < range->end_mc_offset) {
- *phys_addr = range->start_phys_addr +
- (mc_offset - range->start_mc_offset);
- return 0;
- }
- }
-
- return -EFAULT;
-}
-
-static int fsl_mc_device_get_mmio_regions(struct fsl_mc_device *mc_dev,
- struct fsl_mc_device *mc_bus_dev)
-{
- int i;
- int error;
- struct resource *regions;
- struct dprc_obj_desc *obj_desc = &mc_dev->obj_desc;
- struct device *parent_dev = mc_dev->dev.parent;
- enum dprc_region_type mc_region_type;
-
- if (strcmp(obj_desc->type, "dprc") == 0 ||
- strcmp(obj_desc->type, "dpmcp") == 0) {
- mc_region_type = DPRC_REGION_TYPE_MC_PORTAL;
- } else if (strcmp(obj_desc->type, "dpio") == 0) {
- mc_region_type = DPRC_REGION_TYPE_QBMAN_PORTAL;
- } else {
- /*
- * This function should not have been called for this MC object
- * type, as this object type is not supposed to have MMIO
- * regions
- */
- WARN_ON(true);
- return -EINVAL;
- }
-
- regions = kmalloc_array(obj_desc->region_count,
- sizeof(regions[0]), GFP_KERNEL);
- if (!regions)
- return -ENOMEM;
-
- for (i = 0; i < obj_desc->region_count; i++) {
- struct dprc_region_desc region_desc;
-
- error = dprc_get_obj_region(mc_bus_dev->mc_io,
- 0,
- mc_bus_dev->mc_handle,
- obj_desc->type,
- obj_desc->id, i, ®ion_desc);
- if (error < 0) {
- dev_err(parent_dev,
- "dprc_get_obj_region() failed: %d\n", error);
- goto error_cleanup_regions;
- }
-
- WARN_ON(region_desc.size == 0);
- error = translate_mc_addr(mc_dev, mc_region_type,
- region_desc.base_offset,
- ®ions[i].start);
- if (error < 0) {
- dev_err(parent_dev,
- "Invalid MC offset: %#x (for %s.%d\'s region %d)\n",
- region_desc.base_offset,
- obj_desc->type, obj_desc->id, i);
- goto error_cleanup_regions;
- }
-
- regions[i].end = regions[i].start + region_desc.size - 1;
- regions[i].name = "fsl-mc object MMIO region";
- regions[i].flags = IORESOURCE_IO;
- if (region_desc.flags & DPRC_REGION_CACHEABLE)
- regions[i].flags |= IORESOURCE_CACHEABLE;
- }
-
- mc_dev->regions = regions;
- return 0;
-
-error_cleanup_regions:
- kfree(regions);
- return error;
-}
-
-/**
- * fsl_mc_is_root_dprc - function to check if a given device is a root dprc
- */
-bool fsl_mc_is_root_dprc(struct device *dev)
-{
- struct device *root_dprc_dev;
-
- fsl_mc_get_root_dprc(dev, &root_dprc_dev);
- if (!root_dprc_dev)
- return false;
- return dev == root_dprc_dev;
-}
-
-/**
- * Add a newly discovered MC object device to be visible in Linux
- */
-int fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
- struct fsl_mc_io *mc_io,
- struct device *parent_dev,
- struct fsl_mc_device **new_mc_dev)
-{
- int error;
- struct fsl_mc_device *mc_dev = NULL;
- struct fsl_mc_bus *mc_bus = NULL;
- struct fsl_mc_device *parent_mc_dev;
-
- if (parent_dev->bus == &fsl_mc_bus_type)
- parent_mc_dev = to_fsl_mc_device(parent_dev);
- else
- parent_mc_dev = NULL;
-
- if (strcmp(obj_desc->type, "dprc") == 0) {
- /*
- * Allocate an MC bus device object:
- */
- mc_bus = devm_kzalloc(parent_dev, sizeof(*mc_bus), GFP_KERNEL);
- if (!mc_bus)
- return -ENOMEM;
-
- mc_dev = &mc_bus->mc_dev;
- } else {
- /*
- * Allocate a regular fsl_mc_device object:
- */
- mc_dev = kmem_cache_zalloc(mc_dev_cache, GFP_KERNEL);
- if (!mc_dev)
- return -ENOMEM;
- }
-
- mc_dev->obj_desc = *obj_desc;
- mc_dev->mc_io = mc_io;
- device_initialize(&mc_dev->dev);
- mc_dev->dev.parent = parent_dev;
- mc_dev->dev.bus = &fsl_mc_bus_type;
- dev_set_name(&mc_dev->dev, "%s.%d", obj_desc->type, obj_desc->id);
-
- if (strcmp(obj_desc->type, "dprc") == 0) {
- struct fsl_mc_io *mc_io2;
-
- mc_dev->flags |= FSL_MC_IS_DPRC;
-
- /*
- * To get the DPRC's ICID, we need to open the DPRC
- * in get_dprc_icid(). For child DPRCs, we do so using the
- * parent DPRC's MC portal instead of the child DPRC's MC
- * portal, in case the child DPRC is already opened with
- * its own portal (e.g., the DPRC used by AIOP).
- *
- * NOTE: There cannot be more than one active open for a
- * given MC object, using the same MC portal.
- */
- if (parent_mc_dev) {
- /*
- * device being added is a child DPRC device
- */
- mc_io2 = parent_mc_dev->mc_io;
- } else {
- /*
- * device being added is the root DPRC device
- */
- if (WARN_ON(!mc_io)) {
- error = -EINVAL;
- goto error_cleanup_dev;
- }
-
- mc_io2 = mc_io;
-
- atomic_inc(&root_dprc_count);
- }
-
- error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid);
- if (error < 0)
- goto error_cleanup_dev;
- } else {
- /*
- * A non-DPRC MC object device has to be a child of another
- * MC object (specifically a DPRC object)
- */
- mc_dev->icid = parent_mc_dev->icid;
- mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
- mc_dev->dev.dma_mask = &mc_dev->dma_mask;
- dev_set_msi_domain(&mc_dev->dev,
- dev_get_msi_domain(&parent_mc_dev->dev));
- }
-
- /*
- * Get MMIO regions for the device from the MC:
- *
- * NOTE: the root DPRC is a special case as its MMIO region is
- * obtained from the device tree
- */
- if (parent_mc_dev && obj_desc->region_count != 0) {
- error = fsl_mc_device_get_mmio_regions(mc_dev,
- parent_mc_dev);
- if (error < 0)
- goto error_cleanup_dev;
- }
-
- /* Objects are coherent, unless 'no shareability' flag set. */
- if (!(obj_desc->flags & DPRC_OBJ_FLAG_NO_MEM_SHAREABILITY))
- arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
-
- /*
- * The device-specific probe callback will get invoked by device_add()
- */
- error = device_add(&mc_dev->dev);
- if (error < 0) {
- dev_err(parent_dev,
- "device_add() failed for device %s: %d\n",
- dev_name(&mc_dev->dev), error);
- goto error_cleanup_dev;
- }
-
- (void)get_device(&mc_dev->dev);
- dev_dbg(parent_dev, "Added MC object device %s\n",
- dev_name(&mc_dev->dev));
-
- *new_mc_dev = mc_dev;
- return 0;
-
-error_cleanup_dev:
- kfree(mc_dev->regions);
- if (mc_bus)
- devm_kfree(parent_dev, mc_bus);
- else
- kmem_cache_free(mc_dev_cache, mc_dev);
-
- return error;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_device_add);
-
-/**
- * fsl_mc_device_remove - Remove a MC object device from being visible to
- * Linux
- *
- * @mc_dev: Pointer to a MC object device object
- */
-void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
-{
- struct fsl_mc_bus *mc_bus = NULL;
-
- kfree(mc_dev->regions);
-
- /*
- * The device-specific remove callback will get invoked by device_del()
- */
- device_del(&mc_dev->dev);
- put_device(&mc_dev->dev);
-
- if (strcmp(mc_dev->obj_desc.type, "dprc") == 0) {
- mc_bus = to_fsl_mc_bus(mc_dev);
-
- if (fsl_mc_is_root_dprc(&mc_dev->dev)) {
- if (atomic_read(&root_dprc_count) > 0)
- atomic_dec(&root_dprc_count);
- else
- WARN_ON(1);
- }
- }
-
- if (mc_bus)
- devm_kfree(mc_dev->dev.parent, mc_bus);
- else
- kmem_cache_free(mc_dev_cache, mc_dev);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_device_remove);
-
-static int parse_mc_ranges(struct device *dev,
- int *paddr_cells,
- int *mc_addr_cells,
- int *mc_size_cells,
- const __be32 **ranges_start,
- u8 *num_ranges)
-{
- const __be32 *prop;
- int range_tuple_cell_count;
- int ranges_len;
- int tuple_len;
- struct device_node *mc_node = dev->of_node;
-
- *ranges_start = of_get_property(mc_node, "ranges", &ranges_len);
- if (!(*ranges_start) || !ranges_len) {
- dev_warn(dev,
- "missing or empty ranges property for device tree node '%s'\n",
- mc_node->name);
-
- *num_ranges = 0;
- return 0;
- }
-
- *paddr_cells = of_n_addr_cells(mc_node);
-
- prop = of_get_property(mc_node, "#address-cells", NULL);
- if (prop)
- *mc_addr_cells = be32_to_cpup(prop);
- else
- *mc_addr_cells = *paddr_cells;
-
- prop = of_get_property(mc_node, "#size-cells", NULL);
- if (prop)
- *mc_size_cells = be32_to_cpup(prop);
- else
- *mc_size_cells = of_n_size_cells(mc_node);
-
- range_tuple_cell_count = *paddr_cells + *mc_addr_cells +
- *mc_size_cells;
-
- tuple_len = range_tuple_cell_count * sizeof(__be32);
- if (ranges_len % tuple_len != 0) {
- dev_err(dev, "malformed ranges property '%s'\n", mc_node->name);
- return -EINVAL;
- }
-
- *num_ranges = ranges_len / tuple_len;
- return 0;
-}
-
-static int get_mc_addr_translation_ranges(struct device *dev,
- struct fsl_mc_addr_translation_range
- **ranges,
- u8 *num_ranges)
-{
- int error;
- int paddr_cells;
- int mc_addr_cells;
- int mc_size_cells;
- int i;
- const __be32 *ranges_start;
- const __be32 *cell;
-
- error = parse_mc_ranges(dev,
- &paddr_cells,
- &mc_addr_cells,
- &mc_size_cells,
- &ranges_start,
- num_ranges);
- if (error < 0)
- return error;
-
- if (!(*num_ranges)) {
- /*
- * Missing or empty ranges property ("ranges;") for the
- * 'fsl,qoriq-mc' node. In this case, identity mapping
- * will be used.
- */
- *ranges = NULL;
- return 0;
- }
-
- *ranges = devm_kcalloc(dev, *num_ranges,
- sizeof(struct fsl_mc_addr_translation_range),
- GFP_KERNEL);
- if (!(*ranges))
- return -ENOMEM;
-
- cell = ranges_start;
- for (i = 0; i < *num_ranges; ++i) {
- struct fsl_mc_addr_translation_range *range = &(*ranges)[i];
-
- range->mc_region_type = of_read_number(cell, 1);
- range->start_mc_offset = of_read_number(cell + 1,
- mc_addr_cells - 1);
- cell += mc_addr_cells;
- range->start_phys_addr = of_read_number(cell, paddr_cells);
- cell += paddr_cells;
- range->end_mc_offset = range->start_mc_offset +
- of_read_number(cell, mc_size_cells);
-
- cell += mc_size_cells;
- }
-
- return 0;
-}
-
-/**
- * fsl_mc_bus_probe - callback invoked when the root MC bus is being
- * added
- */
-static int fsl_mc_bus_probe(struct platform_device *pdev)
-{
- struct dprc_obj_desc obj_desc;
- int error;
- struct fsl_mc *mc;
- struct fsl_mc_device *mc_bus_dev = NULL;
- struct fsl_mc_io *mc_io = NULL;
- int container_id;
- phys_addr_t mc_portal_phys_addr;
- u32 mc_portal_size;
- struct mc_version mc_version;
- struct resource res;
-
- dev_info(&pdev->dev, "Root MC bus device probed");
-
- mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
- if (!mc)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, mc);
-
- /*
- * Get physical address of MC portal for the root DPRC:
- */
- error = of_address_to_resource(pdev->dev.of_node, 0, &res);
- if (error < 0) {
- dev_err(&pdev->dev,
- "of_address_to_resource() failed for %s\n",
- pdev->dev.of_node->full_name);
- return error;
- }
-
- mc_portal_phys_addr = res.start;
- mc_portal_size = resource_size(&res);
- error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr,
- mc_portal_size, NULL,
- FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io);
- if (error < 0)
- return error;
-
- error = mc_get_version(mc_io, 0, &mc_version);
- if (error != 0) {
- dev_err(&pdev->dev,
- "mc_get_version() failed with error %d\n", error);
- goto error_cleanup_mc_io;
- }
-
- dev_info(&pdev->dev,
- "Freescale Management Complex Firmware version: %u.%u.%u\n",
- mc_version.major, mc_version.minor, mc_version.revision);
-
- error = get_mc_addr_translation_ranges(&pdev->dev,
- &mc->translation_ranges,
- &mc->num_translation_ranges);
- if (error < 0)
- goto error_cleanup_mc_io;
-
- error = dpmng_get_container_id(mc_io, 0, &container_id);
- if (error < 0) {
- dev_err(&pdev->dev,
- "dpmng_get_container_id() failed: %d\n", error);
- goto error_cleanup_mc_io;
- }
-
- memset(&obj_desc, 0, sizeof(struct dprc_obj_desc));
- error = get_dprc_version(mc_io, container_id,
- &obj_desc.ver_major, &obj_desc.ver_minor);
- if (error < 0)
- goto error_cleanup_mc_io;
-
- obj_desc.vendor = FSL_MC_VENDOR_FREESCALE;
- strcpy(obj_desc.type, "dprc");
- obj_desc.id = container_id;
- obj_desc.irq_count = 1;
- obj_desc.region_count = 0;
-
- error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, &mc_bus_dev);
- if (error < 0)
- goto error_cleanup_mc_io;
-
- mc->root_mc_bus_dev = mc_bus_dev;
- return 0;
-
-error_cleanup_mc_io:
- fsl_destroy_mc_io(mc_io);
- return error;
-}
-
-/**
- * fsl_mc_bus_remove - callback invoked when the root MC bus is being
- * removed
- */
-static int fsl_mc_bus_remove(struct platform_device *pdev)
-{
- struct fsl_mc *mc = platform_get_drvdata(pdev);
-
- if (WARN_ON(!fsl_mc_is_root_dprc(&mc->root_mc_bus_dev->dev)))
- return -EINVAL;
-
- fsl_mc_device_remove(mc->root_mc_bus_dev);
-
- fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io);
- mc->root_mc_bus_dev->mc_io = NULL;
-
- dev_info(&pdev->dev, "Root MC bus device removed");
- return 0;
-}
-
-static const struct of_device_id fsl_mc_bus_match_table[] = {
- {.compatible = "fsl,qoriq-mc",},
- {},
-};
-
-MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table);
-
-static struct platform_driver fsl_mc_bus_driver = {
- .driver = {
- .name = "fsl_mc_bus",
- .pm = NULL,
- .of_match_table = fsl_mc_bus_match_table,
- },
- .probe = fsl_mc_bus_probe,
- .remove = fsl_mc_bus_remove,
-};
-
-static int __init fsl_mc_bus_driver_init(void)
-{
- int error;
-
- mc_dev_cache = kmem_cache_create("fsl_mc_device",
- sizeof(struct fsl_mc_device), 0, 0,
- NULL);
- if (!mc_dev_cache) {
- pr_err("Could not create fsl_mc_device cache\n");
- return -ENOMEM;
- }
-
- error = bus_register(&fsl_mc_bus_type);
- if (error < 0) {
- pr_err("fsl-mc bus type registration failed: %d\n", error);
- goto error_cleanup_cache;
- }
-
- pr_info("fsl-mc bus type registered\n");
-
- error = platform_driver_register(&fsl_mc_bus_driver);
- if (error < 0) {
- pr_err("platform_driver_register() failed: %d\n", error);
- goto error_cleanup_bus;
- }
-
- error = dprc_driver_init();
- if (error < 0)
- goto error_cleanup_driver;
-
- error = fsl_mc_allocator_driver_init();
- if (error < 0)
- goto error_cleanup_dprc_driver;
-
- error = its_fsl_mc_msi_init();
- if (error < 0)
- goto error_cleanup_mc_allocator;
-
- return 0;
-
-error_cleanup_mc_allocator:
- fsl_mc_allocator_driver_exit();
-
-error_cleanup_dprc_driver:
- dprc_driver_exit();
-
-error_cleanup_driver:
- platform_driver_unregister(&fsl_mc_bus_driver);
-
-error_cleanup_bus:
- bus_unregister(&fsl_mc_bus_type);
-
-error_cleanup_cache:
- kmem_cache_destroy(mc_dev_cache);
- return error;
-}
-
-postcore_initcall(fsl_mc_bus_driver_init);
-
-static void __exit fsl_mc_bus_driver_exit(void)
-{
- if (WARN_ON(!mc_dev_cache))
- return;
-
- its_fsl_mc_msi_cleanup();
- fsl_mc_allocator_driver_exit();
- dprc_driver_exit();
- platform_driver_unregister(&fsl_mc_bus_driver);
- bus_unregister(&fsl_mc_bus_type);
- kmem_cache_destroy(mc_dev_cache);
- pr_info("MC bus unregistered\n");
-}
-
-module_exit(fsl_mc_bus_driver_exit);
-
-MODULE_AUTHOR("Freescale Semiconductor Inc.");
-MODULE_DESCRIPTION("Freescale Management Complex (MC) bus driver");
-MODULE_LICENSE("GPL");
projects / deliverable / linux.git / blobdiff