mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 02:35:29 +07:00
987068fcbd
The PCI msi-map code is already doing double-duty translating IDs and retrieving MSI parents, which unsurprisingly is the same functionality we need for the identically-formatted PCI iommu-map property. Drag the core parsing routine up yet another layer into the general OF-PCI code, and further generalise it for either kind of lookup in either flavour of map property. Acked-by: Rob Herring <robh+dt@kernel.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
#ifndef __OF_PCI_H
|
|
#define __OF_PCI_H
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/msi.h>
|
|
|
|
struct pci_dev;
|
|
struct of_phandle_args;
|
|
struct device_node;
|
|
|
|
#ifdef CONFIG_OF_PCI
|
|
int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq);
|
|
struct device_node *of_pci_find_child_device(struct device_node *parent,
|
|
unsigned int devfn);
|
|
int of_pci_get_devfn(struct device_node *np);
|
|
int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
|
|
int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
|
|
int of_get_pci_domain_nr(struct device_node *node);
|
|
void of_pci_check_probe_only(void);
|
|
int of_pci_map_rid(struct device_node *np, u32 rid,
|
|
const char *map_name, const char *map_mask_name,
|
|
struct device_node **target, u32 *id_out);
|
|
#else
|
|
static inline int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct device_node *of_pci_find_child_device(struct device_node *parent,
|
|
unsigned int devfn)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_pci_get_devfn(struct device_node *np)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int
|
|
of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
of_pci_parse_bus_range(struct device_node *node, struct resource *res)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int
|
|
of_get_pci_domain_nr(struct device_node *node)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int of_pci_map_rid(struct device_node *np, u32 rid,
|
|
const char *map_name, const char *map_mask_name,
|
|
struct device_node **target, u32 *id_out)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void of_pci_check_probe_only(void) { }
|
|
#endif
|
|
|
|
#if defined(CONFIG_OF_ADDRESS)
|
|
int of_pci_get_host_bridge_resources(struct device_node *dev,
|
|
unsigned char busno, unsigned char bus_max,
|
|
struct list_head *resources, resource_size_t *io_base);
|
|
#else
|
|
static inline int of_pci_get_host_bridge_resources(struct device_node *dev,
|
|
unsigned char busno, unsigned char bus_max,
|
|
struct list_head *resources, resource_size_t *io_base)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_OF) && defined(CONFIG_PCI_MSI)
|
|
int of_pci_msi_chip_add(struct msi_controller *chip);
|
|
void of_pci_msi_chip_remove(struct msi_controller *chip);
|
|
struct msi_controller *of_pci_find_msi_chip_by_node(struct device_node *of_node);
|
|
#else
|
|
static inline int of_pci_msi_chip_add(struct msi_controller *chip) { return -EINVAL; }
|
|
static inline void of_pci_msi_chip_remove(struct msi_controller *chip) { }
|
|
static inline struct msi_controller *
|
|
of_pci_find_msi_chip_by_node(struct device_node *of_node) { return NULL; }
|
|
#endif
|
|
|
|
#endif
|