include/asm-sparc64/ebus.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 <asm/oplib.h>
  12 #include <asm/prom.h>
  13 #include <asm/of_device.h>
  14
  15 struct linux_ebus_child {
  16         struct linux_ebus_child         *next;
  17         struct linux_ebus_device        *parent;
  18         struct linux_ebus               *bus;
  19         struct device_node              *prom_node;
  20         struct resource                  resource[PROMREG_MAX];
  21         int                              num_addrs;
  22         unsigned int                     irqs[PROMINTR_MAX];
  23         int                              num_irqs;
  24 };
  25
  26 struct linux_ebus_device {
  27         struct of_device                ofdev;
  28         struct linux_ebus_device        *next;
  29         struct linux_ebus_child         *children;
  30         struct linux_ebus               *bus;
  31         struct device_node              *prom_node;
  32         struct resource                  resource[PROMREG_MAX];
  33         int                              num_addrs;
  34         unsigned int                     irqs[PROMINTR_MAX];
  35         int                              num_irqs;
  36 };
  37 #define to_ebus_device(d) container_of(d, struct linux_ebus_device, ofdev.dev)
  38
  39 struct linux_ebus {
  40         struct of_device                ofdev;
  41         struct linux_ebus               *next;
  42         struct linux_ebus_device        *devices;
  43         struct pci_dev                  *self;
  44         int                              index;
  45         int                              is_rio;
  46         struct device_node              *prom_node;
  47 };
  48 #define to_ebus(d) container_of(d, struct linux_ebus, ofdev.dev)
  49
  50 struct ebus_dma_info {
  51         spinlock_t      lock;
  52         void __iomem    *regs;
  53
  54         unsigned int    flags;
  55 #define EBUS_DMA_FLAG_USE_EBDMA_HANDLER         0x00000001
  56 #define EBUS_DMA_FLAG_TCI_DISABLE               0x00000002
  57
  58         /* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
  59          * set.
  60          */
  61         void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
  62         void *client_cookie;
  63         unsigned int    irq;
  64 #define EBUS_DMA_EVENT_ERROR    1
  65 #define EBUS_DMA_EVENT_DMA      2
  66 #define EBUS_DMA_EVENT_DEVICE   4
  67
  68         unsigned char   name[64];
  69 };
  70
  71 extern int ebus_dma_register(struct ebus_dma_info *p);
  72 extern int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
  73 extern void ebus_dma_unregister(struct ebus_dma_info *p);
  74 extern int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
  75                             size_t len);
  76 extern void ebus_dma_prepare(struct ebus_dma_info *p, int write);
  77 extern unsigned int ebus_dma_residue(struct ebus_dma_info *p);
  78 extern unsigned int ebus_dma_addr(struct ebus_dma_info *p);
  79 extern void ebus_dma_enable(struct ebus_dma_info *p, int on);
  80
  81 extern struct linux_ebus                *ebus_chain;
  82
  83 extern void ebus_init(void);
  84
  85 #define for_each_ebus(bus)                                              \
  86         for((bus) = ebus_chain; (bus); (bus) = (bus)->next)
  87
  88 #define for_each_ebusdev(dev, bus)                                      \
  89         for((dev) = (bus)->devices; (dev); (dev) = (dev)->next)
  90
  91 #define for_each_edevchild(dev, child)                                  \
  92         for((child) = (dev)->children; (child); (child) = (child)->next)
  93
  94 #endif /* !(__SPARC64_EBUS_H) */