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Diffstat (limited to 'arch/powerpc/sysdev/fsl_msi.c')
-rw-r--r--arch/powerpc/sysdev/fsl_msi.c77
1 files changed, 34 insertions, 43 deletions
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 8a244828782e..2a007bfb038d 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2007-2011 Freescale Semiconductor, Inc.
*
@@ -5,22 +6,20 @@
* Jason Jin <Jason.jin@freescale.com>
*
* The hwirq alloc and free code reuse from sysdev/mpic_msi.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; version 2 of the
- * License.
- *
*/
#include <linux/irq.h>
#include <linux/msi.h>
#include <linux/pci.h>
#include <linux/slab.h>
-#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
#include <linux/seq_file.h>
#include <sysdev/fsl_soc.h>
-#include <asm/prom.h>
#include <asm/hw_irq.h>
#include <asm/ppc-pci.h>
#include <asm/mpic.h>
@@ -76,7 +75,7 @@ static void fsl_msi_print_chip(struct irq_data *irqd, struct seq_file *p)
srs = (hwirq >> msi_data->srs_shift) & MSI_SRS_MASK;
cascade_virq = msi_data->cascade_array[srs]->virq;
- seq_printf(p, " fsl-msi-%d", cascade_virq);
+ seq_printf(p, "fsl-msi-%d", cascade_virq);
}
@@ -130,17 +129,14 @@ static void fsl_teardown_msi_irqs(struct pci_dev *pdev)
struct fsl_msi *msi_data;
irq_hw_number_t hwirq;
- for_each_pci_msi_entry(entry, pdev) {
- if (!entry->irq)
- continue;
+ msi_for_each_desc(entry, &pdev->dev, MSI_DESC_ASSOCIATED) {
hwirq = virq_to_hw(entry->irq);
msi_data = irq_get_chip_data(entry->irq);
irq_set_msi_desc(entry->irq, NULL);
irq_dispose_mapping(entry->irq);
+ entry->irq = 0;
msi_bitmap_free_hwirqs(&msi_data->bitmap, hwirq, 1);
}
-
- return;
}
static void fsl_compose_msi_msg(struct pci_dev *pdev, int hwirq,
@@ -214,13 +210,15 @@ static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
phandle = np->phandle;
else {
dev_err(&pdev->dev,
- "node %s has an invalid fsl,msi phandle %u\n",
- hose->dn->full_name, np->phandle);
+ "node %pOF has an invalid fsl,msi phandle %u\n",
+ hose->dn, np->phandle);
+ of_node_put(np);
return -EINVAL;
}
+ of_node_put(np);
}
- for_each_pci_msi_entry(entry, pdev) {
+ msi_for_each_desc(entry, &pdev->dev, MSI_DESC_NOTASSOCIATED) {
/*
* Loop over all the MSI devices until we find one that has an
* available interrupt.
@@ -271,7 +269,6 @@ out_free:
static irqreturn_t fsl_msi_cascade(int irq, void *data)
{
- unsigned int cascade_irq;
struct fsl_msi *msi_data;
int msir_index = -1;
u32 msir_value = 0;
@@ -284,9 +281,6 @@ static irqreturn_t fsl_msi_cascade(int irq, void *data)
msir_index = cascade_data->index;
- if (msir_index >= NR_MSI_REG_MAX)
- cascade_irq = 0;
-
switch (msi_data->feature & FSL_PIC_IP_MASK) {
case FSL_PIC_IP_MPIC:
msir_value = fsl_msi_read(msi_data->msi_regs,
@@ -310,15 +304,15 @@ static irqreturn_t fsl_msi_cascade(int irq, void *data)
}
while (msir_value) {
+ int err;
intr_index = ffs(msir_value) - 1;
- cascade_irq = irq_linear_revmap(msi_data->irqhost,
+ err = generic_handle_domain_irq(msi_data->irqhost,
msi_hwirq(msi_data, msir_index,
intr_index + have_shift));
- if (cascade_irq) {
- generic_handle_irq(cascade_irq);
+ if (!err)
ret = IRQ_HANDLED;
- }
+
have_shift += intr_index + 1;
msir_value = msir_value >> (intr_index + 1);
}
@@ -326,7 +320,7 @@ static irqreturn_t fsl_msi_cascade(int irq, void *data)
return ret;
}
-static int fsl_of_msi_remove(struct platform_device *ofdev)
+static void fsl_of_msi_remove(struct platform_device *ofdev)
{
struct fsl_msi *msi = platform_get_drvdata(ofdev);
int virq, i;
@@ -349,11 +343,10 @@ static int fsl_of_msi_remove(struct platform_device *ofdev)
if ((msi->feature & FSL_PIC_IP_MASK) != FSL_PIC_IP_VMPIC)
iounmap(msi->msi_regs);
kfree(msi);
-
- return 0;
}
static struct lock_class_key fsl_msi_irq_class;
+static struct lock_class_key fsl_msi_irq_request_class;
static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev,
int offset, int irq_index)
@@ -373,7 +366,8 @@ static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev,
dev_err(&dev->dev, "No memory for MSI cascade data\n");
return -ENOMEM;
}
- irq_set_lockdep_class(virt_msir, &fsl_msi_irq_class);
+ irq_set_lockdep_class(virt_msir, &fsl_msi_irq_class,
+ &fsl_msi_irq_request_class);
cascade_data->index = offset;
cascade_data->msi_data = msi;
cascade_data->virq = virt_msir;
@@ -398,7 +392,6 @@ static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev,
static const struct of_device_id fsl_of_msi_ids[];
static int fsl_of_msi_probe(struct platform_device *dev)
{
- const struct of_device_id *match;
struct fsl_msi *msi;
struct resource res, msiir;
int err, i, j, irq_index, count;
@@ -408,10 +401,7 @@ static int fsl_of_msi_probe(struct platform_device *dev)
u32 offset;
struct pci_controller *phb;
- match = of_match_device(fsl_of_msi_ids, &dev->dev);
- if (!match)
- return -EINVAL;
- features = match->data;
+ features = device_get_match_data(&dev->dev);
printk(KERN_DEBUG "Setting up Freescale MSI support\n");
@@ -422,9 +412,8 @@ static int fsl_of_msi_probe(struct platform_device *dev)
}
platform_set_drvdata(dev, msi);
- msi->irqhost = irq_domain_add_linear(dev->dev.of_node,
- NR_MSI_IRQS_MAX, &fsl_msi_host_ops, msi);
-
+ msi->irqhost = irq_domain_create_linear(dev_fwnode(&dev->dev), NR_MSI_IRQS_MAX,
+ &fsl_msi_host_ops, msi);
if (msi->irqhost == NULL) {
dev_err(&dev->dev, "No memory for MSI irqhost\n");
err = -ENOMEM;
@@ -438,16 +427,16 @@ static int fsl_of_msi_probe(struct platform_device *dev)
if ((features->fsl_pic_ip & FSL_PIC_IP_MASK) != FSL_PIC_IP_VMPIC) {
err = of_address_to_resource(dev->dev.of_node, 0, &res);
if (err) {
- dev_err(&dev->dev, "invalid resource for node %s\n",
- dev->dev.of_node->full_name);
+ dev_err(&dev->dev, "invalid resource for node %pOF\n",
+ dev->dev.of_node);
goto error_out;
}
msi->msi_regs = ioremap(res.start, resource_size(&res));
if (!msi->msi_regs) {
err = -ENOMEM;
- dev_err(&dev->dev, "could not map node %s\n",
- dev->dev.of_node->full_name);
+ dev_err(&dev->dev, "could not map node %pOF\n",
+ dev->dev.of_node);
goto error_out;
}
msi->msiir_offset =
@@ -522,8 +511,8 @@ static int fsl_of_msi_probe(struct platform_device *dev)
for (irq_index = 0, i = 0; i < len / (2 * sizeof(u32)); i++) {
if (p[i * 2] % IRQS_PER_MSI_REG ||
p[i * 2 + 1] % IRQS_PER_MSI_REG) {
- pr_warn("%s: %s: msi available range of %u at %u is not IRQ-aligned\n",
- __func__, dev->dev.of_node->full_name,
+ pr_warn("%s: %pOF: msi available range of %u at %u is not IRQ-aligned\n",
+ __func__, dev->dev.of_node,
p[i * 2 + 1], p[i * 2]);
err = -EINVAL;
goto error_out;
@@ -574,10 +563,12 @@ static const struct fsl_msi_feature ipic_msi_feature = {
.msiir_offset = 0x38,
};
+#ifdef CONFIG_EPAPR_PARAVIRT
static const struct fsl_msi_feature vmpic_msi_feature = {
.fsl_pic_ip = FSL_PIC_IP_VMPIC,
.msiir_offset = 0,
};
+#endif
static const struct of_device_id fsl_of_msi_ids[] = {
{
generated by cgit (git 2.34.1) at 2025-12-24 23:09:27 +0000