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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/sh/include/asm/pci.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/sh/include/asm/pci.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h new file mode 100644 index 000000000..54c30126e --- /dev/null +++ b/arch/sh/include/asm/pci.h @@ -0,0 +1,91 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_SH_PCI_H +#define __ASM_SH_PCI_H + +/* Can be used to override the logic in pci_scan_bus for skipping + already-configured bus numbers - to be used for buggy BIOSes + or architectures with incomplete PCI setup by the loader */ + +#define pcibios_assign_all_busses() 1 + +/* + * A board can define one or more PCI channels that represent built-in (or + * external) PCI controllers. + */ +struct pci_channel { + struct pci_channel *next; + struct pci_bus *bus; + + struct pci_ops *pci_ops; + + struct resource *resources; + unsigned int nr_resources; + + unsigned long io_offset; + unsigned long mem_offset; + + unsigned long reg_base; + unsigned long io_map_base; + + unsigned int index; + unsigned int need_domain_info; + + /* Optional error handling */ + struct timer_list err_timer, serr_timer; + unsigned int err_irq, serr_irq; +}; + +/* arch/sh/drivers/pci/pci.c */ +extern raw_spinlock_t pci_config_lock; + +extern int register_pci_controller(struct pci_channel *hose); +extern void pcibios_report_status(unsigned int status_mask, int warn); + +/* arch/sh/drivers/pci/common.c */ +extern int early_read_config_byte(struct pci_channel *hose, int top_bus, + int bus, int devfn, int offset, u8 *value); +extern int early_read_config_word(struct pci_channel *hose, int top_bus, + int bus, int devfn, int offset, u16 *value); +extern int early_read_config_dword(struct pci_channel *hose, int top_bus, + int bus, int devfn, int offset, u32 *value); +extern int early_write_config_byte(struct pci_channel *hose, int top_bus, + int bus, int devfn, int offset, u8 value); +extern int early_write_config_word(struct pci_channel *hose, int top_bus, + int bus, int devfn, int offset, u16 value); +extern int early_write_config_dword(struct pci_channel *hose, int top_bus, + int bus, int devfn, int offset, u32 value); +extern void pcibios_enable_timers(struct pci_channel *hose); +extern unsigned int pcibios_handle_status_errors(unsigned long addr, + unsigned int status, struct pci_channel *hose); +extern int pci_is_66mhz_capable(struct pci_channel *hose, + int top_bus, int current_bus); + +extern unsigned long PCIBIOS_MIN_IO, PCIBIOS_MIN_MEM; + +#define HAVE_PCI_MMAP +#define ARCH_GENERIC_PCI_MMAP_RESOURCE + +/* Dynamic DMA mapping stuff. + * SuperH has everything mapped statically like x86. + */ + +#ifdef CONFIG_PCI +/* + * None of the SH PCI controllers support MWI, it is always treated as a + * direct memory write. + */ +#define PCI_DISABLE_MWI +#endif + +/* Board-specific fixup routines. */ +int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin); + +#define pci_domain_nr(bus) ((struct pci_channel *)(bus)->sysdata)->index + +static inline int pci_proc_domain(struct pci_bus *bus) +{ + struct pci_channel *hose = bus->sysdata; + return hose->need_domain_info; +} + +#endif /* __ASM_SH_PCI_H */ |