arch/sparc/include/asm/ebus_64.h

   1 /*
   2  * ebus.h: PCI to Ebus pseudo driver software state.
   3  *
   4  * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
   5  * Copyright (C) 1999 David S. Miller (davem@redhat.com)
   6  */
   7
   8 #ifndef __SPARC64_EBUS_H
   9 #define __SPARC64_EBUS_H
  10
  11 #include <linux/of_device.h>
  12
  13 #include <asm/oplib.h>
  14 #include <asm/prom.h>
  15
  16 struct linux_ebus_child {
  17         struct linux_ebus_child         *next;
  18         struct linux_ebus_device        *parent;
  19         struct linux_ebus               *bus;
  20         struct device_node              *prom_node;
  21         struct resource                  resource[PROMREG_MAX];
  22         int                              num_addrs;
  23         unsigned int                     irqs[PROMINTR_MAX];
  24         int                              num_irqs;
  25 };
  26
  27 struct linux_ebus_device {
  28         struct of_device                ofdev;
  29         struct linux_ebus_device        *next;
  30         struct linux_ebus_child         *children;
  31         struct linux_ebus               *bus;
  32         struct device_node              *prom_node;
  33         struct resource                  resource[PROMREG_MAX];
  34         int                              num_addrs;
  35         unsigned int                     irqs[PROMINTR_MAX];
  36         int                              num_irqs;
  37 };
  38 #define to_ebus_device(d) container_of(d, struct linux_ebus_device, ofdev.dev)
  39
  40 struct linux_ebus {
  41         struct of_device                ofdev;
  42         struct linux_ebus               *next;
  43         struct linux_ebus_device        *devices;
  44         struct pci_dev                  *self;
  45         int                              index;
  46         int                              is_rio;
  47         struct device_node              *prom_node;
  48 };
  49 #define to_ebus(d) container_of(d, struct linux_ebus, ofdev.dev)
  50
  51 struct ebus_dma_info {
  52         spinlock_t      lock;
  53         void __iomem    *regs;
  54
  55         unsigned int    flags;
  56 #define EBUS_DMA_FLAG_USE_EBDMA_HANDLER         0x00000001
  57 #define EBUS_DMA_FLAG_TCI_DISABLE               0x00000002
  58
  59         /* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
  60          * set.
  61          */
  62         void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
  63         void *client_cookie;
  64         unsigned int    irq;
  65 #define EBUS_DMA_EVENT_ERROR    1
  66 #define EBUS_DMA_EVENT_DMA      2
  67 #define EBUS_DMA_EVENT_DEVICE   4
  68
  69         unsigned char   name[64];
  70 };
  71
  72 extern int ebus_dma_register(struct ebus_dma_info *p);
  73 extern int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
  74 extern void ebus_dma_unregister(struct ebus_dma_info *p);
  75 extern int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
  76                             size_t len);
  77 extern void ebus_dma_prepare(struct ebus_dma_info *p, int write);
  78 extern unsigned int ebus_dma_residue(struct ebus_dma_info *p);
  79 extern unsigned int ebus_dma_addr(struct ebus_dma_info *p);
  80 extern void ebus_dma_enable(struct ebus_dma_info *p, int on);
  81
  82 extern struct linux_ebus                *ebus_chain;
  83
  84 extern void ebus_init(void);
  85
  86 #define for_each_ebus(bus)                                              \
  87         for((bus) = ebus_chain; (bus); (bus) = (bus)->next)
  88
  89 #define for_each_ebusdev(dev, bus)                                      \
  90         for((dev) = (bus)->devices; (dev); (dev) = (dev)->next)
  91
  92 #define for_each_edevchild(dev, child)                                  \
  93         for((child) = (dev)->children; (child); (child) = (child)->next)
  94
  95 #endif /* !(__SPARC64_EBUS_H) */