include/asm-sparc64/ebus.h

   1 /* $Id: ebus.h,v 1.10 2001/03/14 05:00:55 davem Exp $
   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/pbm.h>
  12 #include <asm/oplib.h>
  13
  14 struct linux_ebus_child {
  15         struct linux_ebus_child         *next;
  16         struct linux_ebus_device        *parent;
  17         struct linux_ebus               *bus;
  18         int                              prom_node;
  19         char                             prom_name[64];
  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 linux_ebus_device        *next;
  28         struct linux_ebus_child         *children;
  29         struct linux_ebus               *bus;
  30         int                              prom_node;
  31         char                             prom_name[64];
  32         struct resource                  resource[PROMREG_MAX];
  33         int                              num_addrs;
  34         unsigned int                     irqs[PROMINTR_MAX];
  35         int                              num_irqs;
  36 };
  37
  38 struct linux_ebus {
  39         struct linux_ebus               *next;
  40         struct linux_ebus_device        *devices;
  41         struct pci_pbm_info             *parent;
  42         struct pci_dev                  *self;
  43         int                              index;
  44         int                              is_rio;
  45         int                              prom_node;
  46         char                             prom_name[64];
  47         struct linux_prom_ebus_ranges    ebus_ranges[PROMREG_MAX];
  48         int                              num_ebus_ranges;
  49         struct linux_prom_ebus_intmap    ebus_intmap[PROMREG_MAX];
  50         int                              num_ebus_intmap;
  51         struct linux_prom_ebus_intmask   ebus_intmask;
  52 };
  53
  54 struct ebus_dma_info {
  55         spinlock_t      lock;
  56         void __iomem    *regs;
  57
  58         unsigned int    flags;
  59 #define EBUS_DMA_FLAG_USE_EBDMA_HANDLER         0x00000001
  60 #define EBUS_DMA_FLAG_TCI_DISABLE               0x00000002
  61
  62         /* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
  63          * set.
  64          */
  65         void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
  66         void *client_cookie;
  67         unsigned int    irq;
  68 #define EBUS_DMA_EVENT_ERROR    1
  69 #define EBUS_DMA_EVENT_DMA      2
  70 #define EBUS_DMA_EVENT_DEVICE   4
  71
  72         unsigned char   name[64];
  73 };
  74
  75 extern int ebus_dma_register(struct ebus_dma_info *p);
  76 extern int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
  77 extern void ebus_dma_unregister(struct ebus_dma_info *p);
  78 extern int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
  79                             size_t len);
  80 extern void ebus_dma_prepare(struct ebus_dma_info *p, int write);
  81 extern unsigned int ebus_dma_residue(struct ebus_dma_info *p);
  82 extern void ebus_dma_enable(struct ebus_dma_info *p, int on);
  83
  84 extern struct linux_ebus                *ebus_chain;
  85
  86 extern void ebus_init(void);
  87
  88 #define for_each_ebus(bus)                                              \
  89         for((bus) = ebus_chain; (bus); (bus) = (bus)->next)
  90
  91 #define for_each_ebusdev(dev, bus)                                      \
  92         for((dev) = (bus)->devices; (dev); (dev) = (dev)->next)
  93
  94 #define for_each_edevchild(dev, child)                                  \
  95         for((child) = (dev)->children; (child); (child) = (child)->next)
  96
  97 #endif /* !(__SPARC64_EBUS_H) */