@@ -1624,6 +1624,8 @@ 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);
@@ -1656,6 +1658,11 @@ 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; }
@@ -1719,6 +1726,22 @@ 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
/**
@@ -2616,14 +2639,6 @@ 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...) \
The IMS related functions (pci_create_ims_domain(), pci_ims_alloc_irq(), and pci_ims_free_irq()) are not declared when CONFIG_PCI_MSI is disabled. Provide definitions of these functions that can be used when callers need to compile when CONFIG_PCI_MSI is disabled. This is a preparatory patch for the first caller of these functions (VFIO). Fixes: 0194425af0c8 ("PCI/MSI: Provide IMS (Interrupt Message Store) support") Fixes: c9e5bea27383 ("PCI/MSI: Provide pci_ims_alloc/free_irq()") Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Cc: stable@vger.kernel.org # v6.2+ --- I plan to send this patch separately to PCI folks, pending the outcome of this work. include/linux/pci.h | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-)