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genirq/msi: Mop up old interfaces 

Get rid of the old iterators, alloc/free functions and adjust the core code
accordingly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.117395027@linutronix.de
This commit is contained in:
Thomas Gleixner 2021-12-06 23:51:47 +01:00
parent 495c66aca3
commit cc9a246dbf
2 changed files with 15 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
include/linux/msi.h
View File

@ -197,15 +197,7 @@ struct msi_desc *msi_next_desc(struct device *dev, enum msi_desc_filter filter);
for ((desc) = msi_first_desc((dev), (filter)); (desc); \
(desc) = msi_next_desc((dev), (filter)))
/* Helpers to hide struct msi_desc implementation details */
#define msi_desc_to_dev(desc) ((desc)->dev)
#define dev_to_msi_list(dev) (&(dev)->msi.data->list)
#define first_msi_entry(dev) \
list_first_entry(dev_to_msi_list((dev)), struct msi_desc, list)
#define for_each_msi_entry(desc, dev) \
list_for_each_entry((desc), dev_to_msi_list((dev)), list)
#define for_each_msi_entry_safe(desc, tmp, dev) \
list_for_each_entry_safe((desc), (tmp), dev_to_msi_list((dev)), list)
#ifdef CONFIG_IRQ_MSI_IOMMU
static inline const void *msi_desc_get_iommu_cookie(struct msi_desc *desc)
@ -231,10 +223,6 @@ static inline void msi_desc_set_iommu_cookie(struct msi_desc *desc,
#endif
#ifdef CONFIG_PCI_MSI
#define first_pci_msi_entry(pdev) first_msi_entry(&(pdev)->dev)
#define for_each_pci_msi_entry(desc, pdev) \
for_each_msi_entry((desc), &(pdev)->dev)
struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc);
void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg);
#else /* CONFIG_PCI_MSI */
@ -256,9 +244,6 @@ static inline void msi_free_msi_descs(struct device *dev)
msi_free_msi_descs_range(dev, MSI_DESC_ALL, 0, MSI_MAX_INDEX);
}
struct msi_desc *alloc_msi_entry(struct device *dev, int nvec,
const struct irq_affinity_desc *affinity);
void free_msi_entry(struct msi_desc *entry);
void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void __pci_write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);

29
kernel/irq/msi.c
View File

@ -19,8 +19,10 @@
#include "internals.h"
#define dev_to_msi_list(dev) (&(dev)->msi.data->list)
/**
* alloc_msi_entry - Allocate an initialized msi_desc
* msi_alloc_desc - Allocate an initialized msi_desc
* @dev: Pointer to the device for which this is allocated
* @nvec: The number of vectors used in this entry
* @affinity: Optional pointer to an affinity mask array size of @nvec
@ -30,12 +32,11 @@
*
* Return: pointer to allocated &msi_desc on success or %NULL on failure
*/
struct msi_desc *alloc_msi_entry(struct device *dev, int nvec,
static struct msi_desc *msi_alloc_desc(struct device *dev, int nvec,
const struct irq_affinity_desc *affinity)
{
struct msi_desc *desc;
struct msi_desc *desc = kzalloc(sizeof(*desc), GFP_KERNEL);
desc = kzalloc(sizeof(*desc), GFP_KERNEL);
if (!desc)
return NULL;
@ -43,21 +44,19 @@ struct msi_desc *alloc_msi_entry(struct device *dev, int nvec,
desc->dev = dev;
desc->nvec_used = nvec;
if (affinity) {
desc->affinity = kmemdup(affinity,
nvec * sizeof(*desc->affinity), GFP_KERNEL);
desc->affinity = kmemdup(affinity, nvec * sizeof(*desc->affinity), GFP_KERNEL);
if (!desc->affinity) {
kfree(desc);
return NULL;
}
}
return desc;
}
void free_msi_entry(struct msi_desc *entry)
static void msi_free_desc(struct msi_desc *desc)
{
kfree(entry->affinity);
kfree(entry);
kfree(desc->affinity);
kfree(desc);
}
/**
@ -73,7 +72,7 @@ int msi_add_msi_desc(struct device *dev, struct msi_desc *init_desc)
lockdep_assert_held(&dev->msi.data->mutex);
desc = alloc_msi_entry(dev, init_desc->nvec_used, init_desc->affinity);
desc = msi_alloc_desc(dev, init_desc->nvec_used, init_desc->affinity);
if (!desc)
return -ENOMEM;
@ -102,7 +101,7 @@ static int msi_add_simple_msi_descs(struct device *dev, unsigned int index, unsi
lockdep_assert_held(&dev->msi.data->mutex);
for (i = 0; i < ndesc; i++) {
desc = alloc_msi_entry(dev, 1, NULL);
desc = msi_alloc_desc(dev, 1, NULL);
if (!desc)
goto fail;
desc->msi_index = index + i;
@ -114,7 +113,7 @@ static int msi_add_simple_msi_descs(struct device *dev, unsigned int index, unsi
fail:
list_for_each_entry_safe(desc, tmp, &list, list) {
list_del(&desc->list);
free_msi_entry(desc);
msi_free_desc(desc);
}
return -ENOMEM;
}
@ -141,7 +140,7 @@ void msi_free_msi_descs_range(struct device *dev, enum msi_desc_filter filter,
if (desc->msi_index < first_index || desc->msi_index > last_index)
continue;
list_del(&desc->list);
free_msi_entry(desc);
msi_free_desc(desc);
}
}
@ -745,7 +744,7 @@ int msi_domain_populate_irqs(struct irq_domain *domain, struct device *dev,
msi_lock_descs(dev);
for (virq = virq_base; virq < virq_base + nvec; virq++) {
desc = alloc_msi_entry(dev, 1, NULL);
desc = msi_alloc_desc(dev, 1, NULL);
if (!desc) {
ret = -ENOMEM;
goto fail;