Lines Matching +full:fsl +full:- +full:mc
1 // SPDX-License-Identifier: GPL-2.0
3 * Freescale Management Complex (MC) bus driver
5 * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
6 * Copyright 2019-2020 NXP
11 #define pr_fmt(fmt) "fsl-mc: " fmt
21 #include <linux/dma-mapping.h>
25 #include "fsl-mc-private.h"
28 * Default DMA mask for devices on a fsl-mc bus
35 * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
36 * @root_mc_bus_dev: fsl-mc device representing the root DPRC
48 * struct fsl_mc_addr_translation_range - bus to system address translation
50 * @mc_region_type: Type of MC region for the range being translated
51 * @start_mc_offset: Start MC offset of the range being translated
52 * @end_mc_offset: MC offset of the first byte after the range (last MC
53 * offset of the range is end_mc_offset - 1)
70 * fsl_mc_bus_match - device to driver matching callback
71 * @dev: the fsl-mc device to match against
72 * @drv: the device driver to search for matching fsl-mc object type
85 if (mc_dev->driver_override) { in fsl_mc_bus_match()
86 found = !strcmp(mc_dev->driver_override, mc_drv->driver.name); in fsl_mc_bus_match()
90 if (!mc_drv->match_id_table) in fsl_mc_bus_match()
97 if ((mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED) == 0 && in fsl_mc_bus_match()
98 !fsl_mc_is_root_dprc(&mc_dev->dev)) in fsl_mc_bus_match()
105 for (id = mc_drv->match_id_table; id->vendor != 0x0; id++) { in fsl_mc_bus_match()
106 if (id->vendor == mc_dev->obj_desc.vendor && in fsl_mc_bus_match()
107 strcmp(id->obj_type, mc_dev->obj_desc.type) == 0) { in fsl_mc_bus_match()
120 * fsl_mc_bus_uevent - callback invoked when a device is added
126 if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s", in fsl_mc_bus_uevent()
127 mc_dev->obj_desc.vendor, in fsl_mc_bus_uevent()
128 mc_dev->obj_desc.type)) in fsl_mc_bus_uevent()
129 return -ENOMEM; in fsl_mc_bus_uevent()
138 u32 input_id = mc_dev->icid; in fsl_mc_dma_configure()
141 dma_dev = dma_dev->parent; in fsl_mc_dma_configure()
144 return of_dma_configure_id(dev, dma_dev->of_node, 0, &input_id); in fsl_mc_dma_configure()
154 return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor, in modalias_show()
155 mc_dev->obj_desc.type); in modalias_show()
164 char *driver_override, *old = mc_dev->driver_override; in driver_override_store()
167 if (WARN_ON(dev->bus != &fsl_mc_bus_type)) in driver_override_store()
168 return -EINVAL; in driver_override_store()
170 if (count >= (PAGE_SIZE - 1)) in driver_override_store()
171 return -EINVAL; in driver_override_store()
175 return -ENOMEM; in driver_override_store()
182 mc_dev->driver_override = driver_override; in driver_override_store()
185 mc_dev->driver_override = NULL; in driver_override_store()
198 return snprintf(buf, PAGE_SIZE, "%s\n", mc_dev->driver_override); in driver_override_show()
211 .name = "fsl-mc",
332 mc_drv = to_fsl_mc_driver(dev->driver); in fsl_mc_driver_probe()
334 error = mc_drv->probe(mc_dev); in fsl_mc_driver_probe()
336 if (error != -EPROBE_DEFER) in fsl_mc_driver_probe()
346 struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver); in fsl_mc_driver_remove()
350 error = mc_drv->remove(mc_dev); in fsl_mc_driver_remove()
361 struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver); in fsl_mc_driver_shutdown()
364 mc_drv->shutdown(mc_dev); in fsl_mc_driver_shutdown()
368 * __fsl_mc_driver_register - registers a child device driver with the
369 * MC bus
380 mc_driver->driver.owner = owner; in __fsl_mc_driver_register()
381 mc_driver->driver.bus = &fsl_mc_bus_type; in __fsl_mc_driver_register()
383 if (mc_driver->probe) in __fsl_mc_driver_register()
384 mc_driver->driver.probe = fsl_mc_driver_probe; in __fsl_mc_driver_register()
386 if (mc_driver->remove) in __fsl_mc_driver_register()
387 mc_driver->driver.remove = fsl_mc_driver_remove; in __fsl_mc_driver_register()
389 if (mc_driver->shutdown) in __fsl_mc_driver_register()
390 mc_driver->driver.shutdown = fsl_mc_driver_shutdown; in __fsl_mc_driver_register()
392 error = driver_register(&mc_driver->driver); in __fsl_mc_driver_register()
395 mc_driver->driver.name, error); in __fsl_mc_driver_register()
404 * fsl_mc_driver_unregister - unregisters a device driver from the
405 * MC bus
409 driver_unregister(&mc_driver->driver); in fsl_mc_driver_unregister()
414 * mc_get_version() - Retrieves the Management Complex firmware
435 /* send command to mc*/ in mc_get_version()
442 mc_ver_info->revision = le32_to_cpu(rsp_params->revision); in mc_get_version()
443 mc_ver_info->major = le32_to_cpu(rsp_params->version_major); in mc_get_version()
444 mc_ver_info->minor = le32_to_cpu(rsp_params->version_minor); in mc_get_version()
450 * fsl_mc_get_version - function to retrieve the MC f/w version information
452 * Return: mc version when called after fsl-mc-bus probe; NULL otherwise.
464 * fsl_mc_get_root_dprc - function to traverse to the root dprc
475 while (dev_is_fsl_mc((*root_dprc_dev)->parent)) in fsl_mc_get_root_dprc()
476 *root_dprc_dev = (*root_dprc_dev)->parent; in fsl_mc_get_root_dprc()
488 dev_err(mc_io->dev, "dprc_open() failed: %d\n", error); in get_dprc_attr()
495 dev_err(mc_io->dev, "dprc_get_attributes() failed: %d\n", in get_dprc_attr()
526 struct fsl_mc *mc; in translate_mc_addr() local
528 fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev); in translate_mc_addr()
529 mc = dev_get_drvdata(root_dprc_dev->parent); in translate_mc_addr()
531 if (mc->num_translation_ranges == 0) { in translate_mc_addr()
539 for (i = 0; i < mc->num_translation_ranges; i++) { in translate_mc_addr()
541 &mc->translation_ranges[i]; in translate_mc_addr()
543 if (mc_region_type == range->mc_region_type && in translate_mc_addr()
544 mc_offset >= range->start_mc_offset && in translate_mc_addr()
545 mc_offset < range->end_mc_offset) { in translate_mc_addr()
546 *phys_addr = range->start_phys_addr + in translate_mc_addr()
547 (mc_offset - range->start_mc_offset); in translate_mc_addr()
552 return -EFAULT; in translate_mc_addr()
561 struct fsl_mc_obj_desc *obj_desc = &mc_dev->obj_desc; in fsl_mc_device_get_mmio_regions()
562 struct device *parent_dev = mc_dev->dev.parent; in fsl_mc_device_get_mmio_regions()
572 * This function should not have been called for this MC object in fsl_mc_device_get_mmio_regions()
576 return -EINVAL; in fsl_mc_device_get_mmio_regions()
579 regions = kmalloc_array(obj_desc->region_count, in fsl_mc_device_get_mmio_regions()
582 return -ENOMEM; in fsl_mc_device_get_mmio_regions()
584 for (i = 0; i < obj_desc->region_count; i++) { in fsl_mc_device_get_mmio_regions()
587 error = dprc_get_obj_region(mc_bus_dev->mc_io, in fsl_mc_device_get_mmio_regions()
589 mc_bus_dev->mc_handle, in fsl_mc_device_get_mmio_regions()
590 obj_desc->type, in fsl_mc_device_get_mmio_regions()
591 obj_desc->id, i, ®ion_desc); in fsl_mc_device_get_mmio_regions()
598 * Older MC only returned region offset and no base address in fsl_mc_device_get_mmio_regions()
611 * Some versions of the MC firmware wrongly report in fsl_mc_device_get_mmio_regions()
628 "Invalid MC offset: %#x (for %s.%d\'s region %d)\n", in fsl_mc_device_get_mmio_regions()
630 obj_desc->type, obj_desc->id, i); in fsl_mc_device_get_mmio_regions()
634 regions[i].end = regions[i].start + region_desc.size - 1; in fsl_mc_device_get_mmio_regions()
635 regions[i].name = "fsl-mc object MMIO region"; in fsl_mc_device_get_mmio_regions()
640 mc_dev->regions = regions; in fsl_mc_device_get_mmio_regions()
649 * fsl_mc_is_root_dprc - function to check if a given device is a root dprc
665 kfree(mc_dev->regions); in fsl_mc_device_release()
674 * Add a newly discovered fsl-mc device to be visible in Linux
691 if (strcmp(obj_desc->type, "dprc") == 0) { in fsl_mc_device_add()
693 * Allocate an MC bus device object: in fsl_mc_device_add()
697 return -ENOMEM; in fsl_mc_device_add()
699 mutex_init(&mc_bus->scan_mutex); in fsl_mc_device_add()
700 mc_dev = &mc_bus->mc_dev; in fsl_mc_device_add()
707 return -ENOMEM; in fsl_mc_device_add()
710 mc_dev->obj_desc = *obj_desc; in fsl_mc_device_add()
711 mc_dev->mc_io = mc_io; in fsl_mc_device_add()
712 device_initialize(&mc_dev->dev); in fsl_mc_device_add()
713 mc_dev->dev.parent = parent_dev; in fsl_mc_device_add()
714 mc_dev->dev.bus = &fsl_mc_bus_type; in fsl_mc_device_add()
715 mc_dev->dev.release = fsl_mc_device_release; in fsl_mc_device_add()
716 mc_dev->dev.type = fsl_mc_get_device_type(obj_desc->type); in fsl_mc_device_add()
717 if (!mc_dev->dev.type) { in fsl_mc_device_add()
718 error = -ENODEV; in fsl_mc_device_add()
719 dev_err(parent_dev, "unknown device type %s\n", obj_desc->type); in fsl_mc_device_add()
722 dev_set_name(&mc_dev->dev, "%s.%d", obj_desc->type, obj_desc->id); in fsl_mc_device_add()
724 if (strcmp(obj_desc->type, "dprc") == 0) { in fsl_mc_device_add()
727 mc_dev->flags |= FSL_MC_IS_DPRC; in fsl_mc_device_add()
732 * parent DPRC's MC portal instead of the child DPRC's MC in fsl_mc_device_add()
737 * given MC object, using the same MC portal. in fsl_mc_device_add()
743 mc_io2 = parent_mc_dev->mc_io; in fsl_mc_device_add()
749 error = -EINVAL; in fsl_mc_device_add()
756 error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid); in fsl_mc_device_add()
761 * A non-DPRC object has to be a child of a DPRC, use the in fsl_mc_device_add()
764 mc_dev->icid = parent_mc_dev->icid; in fsl_mc_device_add()
765 mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK; in fsl_mc_device_add()
766 mc_dev->dev.dma_mask = &mc_dev->dma_mask; in fsl_mc_device_add()
767 mc_dev->dev.coherent_dma_mask = mc_dev->dma_mask; in fsl_mc_device_add()
768 dev_set_msi_domain(&mc_dev->dev, in fsl_mc_device_add()
769 dev_get_msi_domain(&parent_mc_dev->dev)); in fsl_mc_device_add()
773 * Get MMIO regions for the device from the MC: in fsl_mc_device_add()
778 if (parent_mc_dev && obj_desc->region_count != 0) { in fsl_mc_device_add()
786 * The device-specific probe callback will get invoked by device_add() in fsl_mc_device_add()
788 error = device_add(&mc_dev->dev); in fsl_mc_device_add()
792 dev_name(&mc_dev->dev), error); in fsl_mc_device_add()
796 dev_dbg(parent_dev, "added %s\n", dev_name(&mc_dev->dev)); in fsl_mc_device_add()
802 kfree(mc_dev->regions); in fsl_mc_device_add()
811 * fsl_mc_device_remove - Remove an fsl-mc device from being visible to
814 * @mc_dev: Pointer to an fsl-mc device
818 kfree(mc_dev->driver_override); in fsl_mc_device_remove()
819 mc_dev->driver_override = NULL; in fsl_mc_device_remove()
822 * The device-specific remove callback will get invoked by device_del() in fsl_mc_device_remove()
824 device_del(&mc_dev->dev); in fsl_mc_device_remove()
825 put_device(&mc_dev->dev); in fsl_mc_device_remove()
837 mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); in fsl_mc_get_endpoint()
838 strcpy(endpoint1.type, mc_dev->obj_desc.type); in fsl_mc_get_endpoint()
839 endpoint1.id = mc_dev->obj_desc.id; in fsl_mc_get_endpoint()
841 err = dprc_get_connection(mc_bus_dev->mc_io, 0, in fsl_mc_get_endpoint()
842 mc_bus_dev->mc_handle, in fsl_mc_get_endpoint()
846 if (err == -ENOTCONN || state == -1) in fsl_mc_get_endpoint()
847 return ERR_PTR(-ENOTCONN); in fsl_mc_get_endpoint()
850 dev_err(&mc_bus_dev->dev, "dprc_get_connection() = %d\n", err); in fsl_mc_get_endpoint()
872 struct device_node *mc_node = dev->of_node; in parse_mc_ranges()
884 prop = of_get_property(mc_node, "#address-cells", NULL); in parse_mc_ranges()
890 prop = of_get_property(mc_node, "#size-cells", NULL); in parse_mc_ranges()
902 return -EINVAL; in parse_mc_ranges()
933 * 'fsl,qoriq-mc' node. In this case, identity mapping in get_mc_addr_translation_ranges()
944 return -ENOMEM; in get_mc_addr_translation_ranges()
950 range->mc_region_type = of_read_number(cell, 1); in get_mc_addr_translation_ranges()
951 range->start_mc_offset = of_read_number(cell + 1, in get_mc_addr_translation_ranges()
952 mc_addr_cells - 1); in get_mc_addr_translation_ranges()
954 range->start_phys_addr = of_read_number(cell, paddr_cells); in get_mc_addr_translation_ranges()
956 range->end_mc_offset = range->start_mc_offset + in get_mc_addr_translation_ranges()
966 * fsl_mc_bus_probe - callback invoked when the root MC bus is being
973 struct fsl_mc *mc; in fsl_mc_bus_probe() local
981 mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL); in fsl_mc_bus_probe()
982 if (!mc) in fsl_mc_bus_probe()
983 return -ENOMEM; in fsl_mc_bus_probe()
985 platform_set_drvdata(pdev, mc); in fsl_mc_bus_probe()
989 mc->fsl_mc_regs = devm_ioremap_resource(&pdev->dev, plat_res); in fsl_mc_bus_probe()
990 if (IS_ERR(mc->fsl_mc_regs)) in fsl_mc_bus_probe()
991 return PTR_ERR(mc->fsl_mc_regs); in fsl_mc_bus_probe()
994 if (mc->fsl_mc_regs && IS_ENABLED(CONFIG_ACPI) && in fsl_mc_bus_probe()
995 !dev_of_node(&pdev->dev)) { in fsl_mc_bus_probe()
996 mc_stream_id = readl(mc->fsl_mc_regs + FSL_MC_FAPR); in fsl_mc_bus_probe()
1004 error = acpi_dma_configure_id(&pdev->dev, DEV_DMA_COHERENT, in fsl_mc_bus_probe()
1007 dev_warn(&pdev->dev, "failed to configure dma: %d.\n", in fsl_mc_bus_probe()
1012 * Get physical address of MC portal for the root DPRC: in fsl_mc_bus_probe()
1015 mc_portal_phys_addr = plat_res->start; in fsl_mc_bus_probe()
1019 error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr, in fsl_mc_bus_probe()
1027 dev_err(&pdev->dev, in fsl_mc_bus_probe()
1032 dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n", in fsl_mc_bus_probe()
1035 if (dev_of_node(&pdev->dev)) { in fsl_mc_bus_probe()
1036 error = get_mc_addr_translation_ranges(&pdev->dev, in fsl_mc_bus_probe()
1037 &mc->translation_ranges, in fsl_mc_bus_probe()
1038 &mc->num_translation_ranges); in fsl_mc_bus_probe()
1045 dev_err(&pdev->dev, in fsl_mc_bus_probe()
1063 error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, &mc_bus_dev); in fsl_mc_bus_probe()
1067 mc->root_mc_bus_dev = mc_bus_dev; in fsl_mc_bus_probe()
1068 mc_bus_dev->dev.fwnode = pdev->dev.fwnode; in fsl_mc_bus_probe()
1077 * fsl_mc_bus_remove - callback invoked when the root MC bus is being
1082 struct fsl_mc *mc = platform_get_drvdata(pdev); in fsl_mc_bus_remove() local
1084 if (!fsl_mc_is_root_dprc(&mc->root_mc_bus_dev->dev)) in fsl_mc_bus_remove()
1085 return -EINVAL; in fsl_mc_bus_remove()
1087 fsl_mc_device_remove(mc->root_mc_bus_dev); in fsl_mc_bus_remove()
1089 fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io); in fsl_mc_bus_remove()
1090 mc->root_mc_bus_dev->mc_io = NULL; in fsl_mc_bus_remove()
1096 {.compatible = "fsl,qoriq-mc",},