mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-09-22 12:44:11 +08:00
cdbab28c37
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714175156.4068520-1-robh@kernel.org Signed-off-by: Nishanth Menon <nm@ti.com>
122 lines
3.1 KiB
C
122 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Texas Instruments' K3 Interrupt Aggregator MSI bus
|
|
*
|
|
* Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Lokesh Vutla <lokeshvutla@ti.com>
|
|
*/
|
|
|
|
#include <linux/irq.h>
|
|
#include <linux/irqdomain.h>
|
|
#include <linux/msi.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/soc/ti/ti_sci_inta_msi.h>
|
|
#include <linux/soc/ti/ti_sci_protocol.h>
|
|
|
|
static void ti_sci_inta_msi_write_msg(struct irq_data *data,
|
|
struct msi_msg *msg)
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
|
|
static void ti_sci_inta_msi_compose_msi_msg(struct irq_data *data,
|
|
struct msi_msg *msg)
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
|
|
static void ti_sci_inta_msi_update_chip_ops(struct msi_domain_info *info)
|
|
{
|
|
struct irq_chip *chip = info->chip;
|
|
|
|
if (WARN_ON(!chip))
|
|
return;
|
|
|
|
chip->irq_request_resources = irq_chip_request_resources_parent;
|
|
chip->irq_release_resources = irq_chip_release_resources_parent;
|
|
chip->irq_compose_msi_msg = ti_sci_inta_msi_compose_msi_msg;
|
|
chip->irq_write_msi_msg = ti_sci_inta_msi_write_msg;
|
|
chip->irq_set_type = irq_chip_set_type_parent;
|
|
chip->irq_unmask = irq_chip_unmask_parent;
|
|
chip->irq_mask = irq_chip_mask_parent;
|
|
chip->irq_ack = irq_chip_ack_parent;
|
|
}
|
|
|
|
struct irq_domain *ti_sci_inta_msi_create_irq_domain(struct fwnode_handle *fwnode,
|
|
struct msi_domain_info *info,
|
|
struct irq_domain *parent)
|
|
{
|
|
struct irq_domain *domain;
|
|
|
|
ti_sci_inta_msi_update_chip_ops(info);
|
|
info->flags |= MSI_FLAG_FREE_MSI_DESCS;
|
|
|
|
domain = msi_create_irq_domain(fwnode, info, parent);
|
|
if (domain)
|
|
irq_domain_update_bus_token(domain, DOMAIN_BUS_TI_SCI_INTA_MSI);
|
|
|
|
return domain;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_inta_msi_create_irq_domain);
|
|
|
|
static int ti_sci_inta_msi_alloc_descs(struct device *dev,
|
|
struct ti_sci_resource *res)
|
|
{
|
|
struct msi_desc msi_desc;
|
|
int set, i, count = 0;
|
|
|
|
memset(&msi_desc, 0, sizeof(msi_desc));
|
|
msi_desc.nvec_used = 1;
|
|
|
|
for (set = 0; set < res->sets; set++) {
|
|
for (i = 0; i < res->desc[set].num; i++, count++) {
|
|
msi_desc.msi_index = res->desc[set].start + i;
|
|
if (msi_insert_msi_desc(dev, &msi_desc))
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; i < res->desc[set].num_sec; i++, count++) {
|
|
msi_desc.msi_index = res->desc[set].start_sec + i;
|
|
if (msi_insert_msi_desc(dev, &msi_desc))
|
|
goto fail;
|
|
}
|
|
}
|
|
return count;
|
|
fail:
|
|
msi_free_msi_descs(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int ti_sci_inta_msi_domain_alloc_irqs(struct device *dev,
|
|
struct ti_sci_resource *res)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
int ret, nvec;
|
|
|
|
if (pdev->id < 0)
|
|
return -ENODEV;
|
|
|
|
ret = msi_setup_device_data(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
msi_lock_descs(dev);
|
|
nvec = ti_sci_inta_msi_alloc_descs(dev, res);
|
|
if (nvec <= 0) {
|
|
ret = nvec;
|
|
goto unlock;
|
|
}
|
|
|
|
/* Use alloc ALL as it's unclear whether there are gaps in the indices */
|
|
ret = msi_domain_alloc_irqs_all_locked(dev, MSI_DEFAULT_DOMAIN, nvec);
|
|
if (ret)
|
|
dev_err(dev, "Failed to allocate IRQs %d\n", ret);
|
|
unlock:
|
|
msi_unlock_descs(dev);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_inta_msi_domain_alloc_irqs);
|