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Diffstat (limited to 'arch/sh/include/asm/pci.h')
-rw-r--r--arch/sh/include/asm/pci.h169
1 files changed, 78 insertions, 91 deletions
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index df1d383e18a..5b451155299 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -3,75 +3,73 @@
#ifdef __KERNEL__
-#include <linux/dma-mapping.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
-#define pcibios_scan_all_fns(a, b) 0
/*
* A board can define one or more PCI channels that represent built-in (or
* external) PCI controllers.
*/
struct pci_channel {
- struct pci_ops *pci_ops;
- struct resource *io_resource;
- struct resource *mem_resource;
- int first_devfn;
- int last_devfn;
-};
+ struct pci_channel *next;
+ struct pci_bus *bus;
-/*
- * Each board initializes this array and terminates it with a NULL entry.
- */
-extern struct pci_channel board_pci_channels[];
+ struct pci_ops *pci_ops;
-#define PCIBIOS_MIN_IO board_pci_channels->io_resource->start
-#define PCIBIOS_MIN_MEM board_pci_channels->mem_resource->start
+ struct resource *resources;
+ unsigned int nr_resources;
-/*
- * I/O routine helpers
- */
-#if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
-#define PCI_IO_AREA 0xFE400000
-#define PCI_IO_SIZE 0x00400000
-#elif defined(CONFIG_CPU_SH5)
-extern unsigned long PCI_IO_AREA;
-#define PCI_IO_SIZE 0x00010000
-#else
-#define PCI_IO_AREA 0xFE240000
-#define PCI_IO_SIZE 0x00040000
-#endif
+ unsigned long io_offset;
+ unsigned long mem_offset;
-#define PCI_MEM_SIZE 0x01000000
-
-#define SH4_PCIIOBR_MASK 0xFFFC0000
-#define pci_ioaddr(addr) (PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK))
-
-#if defined(CONFIG_PCI)
-#define is_pci_ioaddr(port) \
- (((port) >= PCIBIOS_MIN_IO) && \
- ((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE)))
-#define is_pci_memaddr(port) \
- (((port) >= PCIBIOS_MIN_MEM) && \
- ((port) < (PCIBIOS_MIN_MEM + PCI_MEM_SIZE)))
-#else
-#define is_pci_ioaddr(port) (0)
-#define is_pci_memaddr(port) (0)
-#endif
+ 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);
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
/* Dynamic DMA mapping stuff.
* SuperH has everything mapped statically like x86.
*/
@@ -80,65 +78,54 @@ static inline void pcibios_penalize_isa_irq(int irq, int active)
* address space. The networking and block device layers use
* this boolean for bounce buffer decisions.
*/
-#define PCI_DMA_BUS_IS_PHYS (1)
+#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <asm/scatterlist.h>
-#include <linux/string.h>
-#include <asm/io.h>
-
-/* pci_unmap_{single,page} being a nop depends upon the
- * configuration.
+#ifdef CONFIG_PCI
+/*
+ * None of the SH PCI controllers support MWI, it is always treated as a
+ * direct memory write.
*/
-#ifdef CONFIG_SH_PCIDMA_NONCOHERENT
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
- dma_addr_t ADDR_NAME;
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
- __u32 LEN_NAME;
-#define pci_unmap_addr(PTR, ADDR_NAME) \
- ((PTR)->ADDR_NAME)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
- (((PTR)->ADDR_NAME) = (VAL))
-#define pci_unmap_len(PTR, LEN_NAME) \
- ((PTR)->LEN_NAME)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
- (((PTR)->LEN_NAME) = (VAL))
-#else
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME) (0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
-#define pci_unmap_len(PTR, LEN_NAME) (0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
-#endif
+#define PCI_DISABLE_MWI
-#ifdef CONFIG_PCI
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
unsigned long *strategy_parameter)
{
- *strat = PCI_DMA_BURST_INFINITY;
- *strategy_parameter = ~0UL;
+ 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. */
-void pcibios_fixup(void);
-int pcibios_init_platform(void);
-int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
+int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin);
-#ifdef CONFIG_PCI_AUTO
-int pciauto_assign_resources(int busno, struct pci_channel *hose);
-#endif
+#define pci_domain_nr(bus) ((struct pci_channel *)(bus)->sysdata)->index
-#endif /* __KERNEL__ */
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+ struct pci_channel *hose = bus->sysdata;
+ return hose->need_domain_info;
+}
-/* generic pci stuff */
-#include <asm-generic/pci.h>
+/* 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 */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 21:29:17 +0000