32351a28a7
This adds preliminary support for the SH7785-based Highlander board. Some of the Highlander support code is reordered so that most of it can be reused directly. This also plugs in missing SH7785 checks in the places that need it, as this is the first board to support the CPU. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
151 lines
3.9 KiB
C
151 lines
3.9 KiB
C
#ifndef __ASM_SH_PCI_H
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#define __ASM_SH_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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#define pcibios_assign_all_busses() 1
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#define pcibios_scan_all_fns(a, b) 0
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/*
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* A board can define one or more PCI channels that represent built-in (or
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* external) PCI controllers.
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*/
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struct pci_channel {
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struct pci_ops *pci_ops;
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struct resource *io_resource;
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struct resource *mem_resource;
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int first_devfn;
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int last_devfn;
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};
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/*
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* Each board initializes this array and terminates it with a NULL entry.
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*/
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extern struct pci_channel board_pci_channels[];
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#define PCIBIOS_MIN_IO board_pci_channels->io_resource->start
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#define PCIBIOS_MIN_MEM board_pci_channels->mem_resource->start
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/*
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* I/O routine helpers
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*/
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#if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
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#define PCI_IO_AREA 0xFE400000
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#define PCI_IO_SIZE 0x00400000
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#else
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#define PCI_IO_AREA 0xFE240000
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#define PCI_IO_SIZE 0X00040000
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#endif
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#define PCI_MEM_SIZE 0x01000000
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#define SH4_PCIIOBR_MASK 0xFFFC0000
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#define pci_ioaddr(addr) (PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK))
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#if defined(CONFIG_PCI)
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#define is_pci_ioaddr(port) \
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(((port) >= PCIBIOS_MIN_IO) && \
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((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE)))
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#define is_pci_memaddr(port) \
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(((port) >= PCIBIOS_MIN_MEM) && \
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((port) < (PCIBIOS_MIN_MEM + PCI_MEM_SIZE)))
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#else
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#define is_pci_ioaddr(port) (0)
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#define is_pci_memaddr(port) (0)
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#endif
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struct pci_dev;
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extern void pcibios_set_master(struct pci_dev *dev);
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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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* SuperH has everything mapped statically like x86.
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*/
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/* The PCI address space does equal the physical memory
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* address space. The networking and block device layers use
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* this boolean for bounce buffer decisions.
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*/
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#define PCI_DMA_BUS_IS_PHYS (1)
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <asm/scatterlist.h>
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#include <linux/string.h>
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#include <asm/io.h>
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/* pci_unmap_{single,page} being a nop depends upon the
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* configuration.
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*/
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#ifdef CONFIG_SH_PCIDMA_NONCOHERENT
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#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
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dma_addr_t ADDR_NAME;
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#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
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__u32 LEN_NAME;
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#define pci_unmap_addr(PTR, ADDR_NAME) \
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((PTR)->ADDR_NAME)
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#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
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(((PTR)->ADDR_NAME) = (VAL))
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#define pci_unmap_len(PTR, LEN_NAME) \
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((PTR)->LEN_NAME)
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#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
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(((PTR)->LEN_NAME) = (VAL))
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#else
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#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
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#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
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#define pci_unmap_addr(PTR, ADDR_NAME) (0)
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#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
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#define pci_unmap_len(PTR, LEN_NAME) (0)
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#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
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#endif
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/* Not supporting more than 32-bit PCI bus addresses now, but
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* must satisfy references to this function. Change if needed.
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*/
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#define pci_dac_dma_supported(pci_dev, mask) (0)
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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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/* Board-specific fixup routines. */
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void pcibios_fixup(void);
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int pcibios_init_platform(void);
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int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
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#ifdef CONFIG_PCI_AUTO
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int pciauto_assign_resources(int busno, struct pci_channel *hose);
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#endif
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static inline void pcibios_add_platform_entries(struct pci_dev *dev)
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{
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}
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#endif /* __KERNEL__ */
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/* generic pci stuff */
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#include <asm-generic/pci.h>
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/* generic DMA-mapping stuff */
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#include <asm-generic/pci-dma-compat.h>
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#endif /* __ASM_SH_PCI_H */
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