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811b32811f
Switch to the new domain id aware interfaces to phase out the previous ones. Remove the domain check as it happens in the core code now. No functional change. Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230314.634800247@linutronix.de
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Texas Instruments' K3 Interrupt Aggregator MSI bus
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*
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* Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
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* Lokesh Vutla <lokeshvutla@ti.com>
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*/
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#include <linux/irq.h>
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#include <linux/irqdomain.h>
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#include <linux/msi.h>
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#include <linux/of_address.h>
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#include <linux/of_device.h>
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#include <linux/of_irq.h>
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#include <linux/soc/ti/ti_sci_inta_msi.h>
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#include <linux/soc/ti/ti_sci_protocol.h>
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static void ti_sci_inta_msi_write_msg(struct irq_data *data,
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struct msi_msg *msg)
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{
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/* Nothing to do */
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}
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static void ti_sci_inta_msi_compose_msi_msg(struct irq_data *data,
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struct msi_msg *msg)
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{
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/* Nothing to do */
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}
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static void ti_sci_inta_msi_update_chip_ops(struct msi_domain_info *info)
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{
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struct irq_chip *chip = info->chip;
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if (WARN_ON(!chip))
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return;
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chip->irq_request_resources = irq_chip_request_resources_parent;
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chip->irq_release_resources = irq_chip_release_resources_parent;
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chip->irq_compose_msi_msg = ti_sci_inta_msi_compose_msi_msg;
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chip->irq_write_msi_msg = ti_sci_inta_msi_write_msg;
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chip->irq_set_type = irq_chip_set_type_parent;
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chip->irq_unmask = irq_chip_unmask_parent;
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chip->irq_mask = irq_chip_mask_parent;
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chip->irq_ack = irq_chip_ack_parent;
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}
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struct irq_domain *ti_sci_inta_msi_create_irq_domain(struct fwnode_handle *fwnode,
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struct msi_domain_info *info,
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struct irq_domain *parent)
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{
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struct irq_domain *domain;
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ti_sci_inta_msi_update_chip_ops(info);
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info->flags |= MSI_FLAG_FREE_MSI_DESCS;
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domain = msi_create_irq_domain(fwnode, info, parent);
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if (domain)
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irq_domain_update_bus_token(domain, DOMAIN_BUS_TI_SCI_INTA_MSI);
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return domain;
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}
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EXPORT_SYMBOL_GPL(ti_sci_inta_msi_create_irq_domain);
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static int ti_sci_inta_msi_alloc_descs(struct device *dev,
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struct ti_sci_resource *res)
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{
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struct msi_desc msi_desc;
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int set, i, count = 0;
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memset(&msi_desc, 0, sizeof(msi_desc));
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msi_desc.nvec_used = 1;
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for (set = 0; set < res->sets; set++) {
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for (i = 0; i < res->desc[set].num; i++, count++) {
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msi_desc.msi_index = res->desc[set].start + i;
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if (msi_insert_msi_desc(dev, &msi_desc))
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goto fail;
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}
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for (i = 0; i < res->desc[set].num_sec; i++, count++) {
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msi_desc.msi_index = res->desc[set].start_sec + i;
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if (msi_insert_msi_desc(dev, &msi_desc))
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goto fail;
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}
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}
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return count;
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fail:
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msi_free_msi_descs(dev);
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return -ENOMEM;
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}
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int ti_sci_inta_msi_domain_alloc_irqs(struct device *dev,
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struct ti_sci_resource *res)
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{
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struct platform_device *pdev = to_platform_device(dev);
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int ret, nvec;
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if (pdev->id < 0)
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return -ENODEV;
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ret = msi_setup_device_data(dev);
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if (ret)
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return ret;
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msi_lock_descs(dev);
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nvec = ti_sci_inta_msi_alloc_descs(dev, res);
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if (nvec <= 0) {
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ret = nvec;
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goto unlock;
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}
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/* Use alloc ALL as it's unclear whether there are gaps in the indices */
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ret = msi_domain_alloc_irqs_all_locked(dev, MSI_DEFAULT_DOMAIN, nvec);
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if (ret)
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dev_err(dev, "Failed to allocate IRQs %d\n", ret);
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unlock:
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msi_unlock_descs(dev);
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return ret;
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}
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EXPORT_SYMBOL_GPL(ti_sci_inta_msi_domain_alloc_irqs);
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