26893c1368
The LEON architecture does not have a BIOS or bootloader that initializes PCI for us, instead Linux generic PCI layer is used to set up resources and IRQ. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
#ifndef __SPARC_PCI_H
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#define __SPARC_PCI_H
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#ifdef __KERNEL__
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#include <linux/dma-mapping.h>
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/* Can be used to override the logic in pci_scan_bus for skipping
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* already-configured bus numbers - to be used for buggy BIOSes
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* or architectures with incomplete PCI setup by the loader.
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*/
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#define pcibios_assign_all_busses() 0
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#define PCIBIOS_MIN_IO 0UL
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#define PCIBIOS_MIN_MEM 0UL
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#define PCI_IRQ_NONE 0xffffffff
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static inline void pcibios_set_master(struct pci_dev *dev)
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{
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/* No special bus mastering setup handling */
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}
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static inline void pcibios_penalize_isa_irq(int irq, int active)
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{
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/* We don't do dynamic PCI IRQ allocation */
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}
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/* Dynamic DMA mapping stuff.
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*/
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#define PCI_DMA_BUS_IS_PHYS (0)
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struct pci_dev;
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#ifdef CONFIG_PCI
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static inline void pci_dma_burst_advice(struct pci_dev *pdev,
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enum pci_dma_burst_strategy *strat,
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unsigned long *strategy_parameter)
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{
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*strat = PCI_DMA_BURST_INFINITY;
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*strategy_parameter = ~0UL;
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}
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#endif
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struct device_node;
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extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
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#endif /* __KERNEL__ */
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#ifndef CONFIG_LEON_PCI
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/* generic pci stuff */
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#include <asm-generic/pci.h>
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#else
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/*
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* On LEON PCI Memory space is mapped 1:1 with physical address space.
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*
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* I/O space is located at low 64Kbytes in PCI I/O space. The I/O addresses
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* are converted into CPU addresses to virtual addresses that are mapped with
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* MMU to the PCI Host PCI I/O space window which are translated to the low
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* 64Kbytes by the Host controller.
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*/
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extern void
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pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
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struct resource *res);
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extern void
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pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
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struct pci_bus_region *region);
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static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
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{
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return PCI_IRQ_NONE;
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}
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#endif
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#endif /* __SPARC_PCI_H */
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