diff options
Diffstat (limited to 'drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c')
| -rw-r--r-- | drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c deleted file mode 100644 index fc2013aade51..000000000000 --- a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c +++ /dev/null @@ -1,102 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Freescale Management Complex (MC) bus driver MSI support - * - * Copyright (C) 2015-2016 Freescale Semiconductor, Inc. - * Author: German Rivera <German.Rivera@freescale.com> - * - */ - -#include <linux/of_device.h> -#include <linux/of_address.h> -#include <linux/irq.h> -#include <linux/msi.h> -#include <linux/of.h> -#include <linux/of_irq.h> -#include "../include/mc.h" - -static struct irq_chip its_msi_irq_chip = { - .name = "ITS-fMSI", - .irq_mask = irq_chip_mask_parent, - .irq_unmask = irq_chip_unmask_parent, - .irq_eoi = irq_chip_eoi_parent, - .irq_set_affinity = msi_domain_set_affinity -}; - -static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain, - struct device *dev, - int nvec, msi_alloc_info_t *info) -{ - struct fsl_mc_device *mc_bus_dev; - struct msi_domain_info *msi_info; - - if (!dev_is_fsl_mc(dev)) - return -EINVAL; - - mc_bus_dev = to_fsl_mc_device(dev); - if (!(mc_bus_dev->flags & FSL_MC_IS_DPRC)) - return -EINVAL; - - /* - * Set the device Id to be passed to the GIC-ITS: - * - * NOTE: This device id corresponds to the IOMMU stream ID - * associated with the DPRC object (ICID). - */ -#ifdef GENERIC_MSI_DOMAIN_OPS - info->scratchpad[0].ul = mc_bus_dev->icid; -#endif - msi_info = msi_get_domain_info(msi_domain->parent); - return msi_info->ops->msi_prepare(msi_domain->parent, dev, nvec, info); -} - -static struct msi_domain_ops its_fsl_mc_msi_ops __ro_after_init = { - .msi_prepare = its_fsl_mc_msi_prepare, -}; - -static struct msi_domain_info its_fsl_mc_msi_domain_info = { - .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS), - .ops = &its_fsl_mc_msi_ops, - .chip = &its_msi_irq_chip, -}; - -static const struct of_device_id its_device_id[] = { - { .compatible = "arm,gic-v3-its", }, - {}, -}; - -static int __init its_fsl_mc_msi_init(void) -{ - struct device_node *np; - struct irq_domain *parent; - struct irq_domain *mc_msi_domain; - - for (np = of_find_matching_node(NULL, its_device_id); np; - np = of_find_matching_node(np, its_device_id)) { - if (!of_device_is_available(np)) - continue; - if (!of_property_read_bool(np, "msi-controller")) - continue; - - parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS); - if (!parent || !msi_get_domain_info(parent)) { - pr_err("%pOF: unable to locate ITS domain\n", np); - continue; - } - - mc_msi_domain = fsl_mc_msi_create_irq_domain( - of_node_to_fwnode(np), - &its_fsl_mc_msi_domain_info, - parent); - if (!mc_msi_domain) { - pr_err("%pOF: unable to create fsl-mc domain\n", np); - continue; - } - - pr_info("fsl-mc MSI: %pOF domain created\n", np); - } - - return 0; -} - -early_initcall(its_fsl_mc_msi_init); |