Initial import

1 files changed, 131 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..5b4511552
--- /dev/null
+++ b/arch/sh/include/asm/pci.h
@@ -0,0 +1,131 @@
+#ifndef __ASM_SH_PCI_H
+#define __ASM_SH_PCI_H
+
+#ifdef __KERNEL__
+
+/* 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;
+
+struct pci_dev;
+
+#define HAVE_PCI_MMAP
+extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+	enum pci_mmap_state mmap_state, int write_combine);
+extern void pcibios_set_master(struct pci_dev *dev);
+
+/* Dynamic DMA mapping stuff.
+ * SuperH has everything mapped statically like x86.
+ */
+
+/* The PCI address space does equal the physical memory
+ * address space.  The networking and block device layers use
+ * this boolean for bounce buffer decisions.
+ */
+#define PCI_DMA_BUS_IS_PHYS	(dma_ops->is_phys)
+
+#ifdef CONFIG_PCI
+/*
+ * None of the SH PCI controllers support MWI, it is always treated as a
+ * direct memory write.
+ */
+#define PCI_DISABLE_MWI
+
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	unsigned long cacheline_size;
+	u8 byte;
+
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
+
+	if (byte == 0)
+		cacheline_size = L1_CACHE_BYTES;
+	else
+		cacheline_size = byte << 2;
+
+	*strat = PCI_DMA_BURST_MULTIPLE;
+	*strategy_parameter = cacheline_size;
+}
+#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;
+}
+
+/* Chances are this interrupt is wired PC-style ...  */
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+	return channel ? 15 : 14;
+}
+
+/* generic DMA-mapping stuff */
+#include <asm-generic/pci-dma-compat.h>
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_SH_PCI_H */
+