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Revert "PCI/MSI: Provide stubs for IMS functions"

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BugLink: https://bugs.launchpad.net/bugs/2097393

[ Upstream commit 372c669271bff736c5bc275c982d8d1b4f1f147c ]

This reverts commit 41efa43124.

IMS (Interrupt Message Store) support appeared in v6.2, but there are no
users yet.

Remove it for now.  We can add it back when a user comes along.  If this is
re-added later, this could be squashed with these commits:

  0194425af0 ("PCI/MSI: Provide IMS (Interrupt Message Store) support")
  c9e5bea273 ("PCI/MSI: Provide pci_ims_alloc/free_irq()")

which added the non-stub implementations.

Link: https://lore.kernel.org/r/20240410221307.2162676-2-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
This commit is contained in:
Bjorn Helgaas
2024-04-10 17:13:01 -05:00
committed by Mehmet Basaran
parent be11efa674
commit 497e37afed
1 changed files with 8 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/pci.h
+8 -26
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@@ -1659,8 +1659,6 @@ struct msix_entry {
u16 entry; /* Driver uses to specify entry, OS writes */
};
struct msi_domain_template;
#ifdef CONFIG_PCI_MSI
int pci_msi_vec_count(struct pci_dev *dev);
void pci_disable_msi(struct pci_dev *dev);
@@ -1693,11 +1691,6 @@ void pci_msix_free_irq(struct pci_dev *pdev, struct msi_map map);
void pci_free_irq_vectors(struct pci_dev *dev);
int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec);
bool pci_create_ims_domain(struct pci_dev *pdev, const struct msi_domain_template *template,
unsigned int hwsize, void *data);
struct msi_map pci_ims_alloc_irq(struct pci_dev *pdev, union msi_instance_cookie *icookie,
const struct irq_affinity_desc *affdesc);
void pci_ims_free_irq(struct pci_dev *pdev, struct msi_map map);
#else
static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
@@ -1761,25 +1754,6 @@ static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev,
{
return cpu_possible_mask;
}
static inline bool pci_create_ims_domain(struct pci_dev *pdev,
const struct msi_domain_template *template,
unsigned int hwsize, void *data)
{ return false; }
static inline struct msi_map pci_ims_alloc_irq(struct pci_dev *pdev,
union msi_instance_cookie *icookie,
const struct irq_affinity_desc *affdesc)
{
struct msi_map map = { .index = -ENOSYS, };
return map;
}
static inline void pci_ims_free_irq(struct pci_dev *pdev, struct msi_map map)
{
}
#endif
/**
@@ -2698,6 +2672,14 @@ static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev)
void pci_uevent_ers(struct pci_dev *pdev, enum pci_ers_result err_type);
#endif
struct msi_domain_template;
bool pci_create_ims_domain(struct pci_dev *pdev, const struct msi_domain_template *template,
unsigned int hwsize, void *data);
struct msi_map pci_ims_alloc_irq(struct pci_dev *pdev, union msi_instance_cookie *icookie,
const struct irq_affinity_desc *affdesc);
void pci_ims_free_irq(struct pci_dev *pdev, struct msi_map map);
#include <linux/dma-mapping.h>
#define pci_printk(level, pdev, fmt, arg...) \