drivers/staging/apf/xlnk.h

   1 #ifndef _XLNK_OS_H
   2 #define _XLNK_OS_H
   3
   4 #include <linux/stddef.h>
   5 #include <linux/dmaengine.h>
   6 #include "xilinx-dma-apf.h"
   7 #include "xlnk-sysdef.h"
   8
   9 #define XLNK_FLAG_COHERENT              0x00000001
  10 #define XLNK_FLAG_KERNEL_BUFFER         0x00000002
  11 #define XLNK_FLAG_DMAPOLLING            0x00000004
  12 #define XLNK_FLAG_IOMMU_VALID           0x00000008
  13 #define XLNK_FLAG_PHYSICAL_ADDR         0x00000100
  14 #define XLNK_FLAG_VIRTUAL_ADDR          0x00000200
  15 #define XLNK_FLAG_MEM_ACQUIRE           0x00001000
  16 #define XLNK_FLAG_MEM_RELEASE           0x00002000
  17 #define CF_FLAG_CACHE_FLUSH_INVALIDATE  0x00000001
  18 #define CF_FLAG_PHYSICALLY_CONTIGUOUS   0x00000002
  19 #define CF_FLAG_DMAPOLLING              0x00000004
  20
  21 enum xlnk_dma_direction {
  22         XLNK_DMA_BI = 0,
  23         XLNK_DMA_TO_DEVICE = 1,
  24         XLNK_DMA_FROM_DEVICE = 2,
  25         XLNK_DMA_NONE = 3,
  26 };
  27
  28 struct xlnk_dma_transfer_handle {
  29         dma_addr_t dma_addr;
  30         unsigned long transfer_length;
  31         void *kern_addr;
  32         unsigned long user_addr;
  33         enum dma_data_direction transfer_direction;
  34         int sg_effective_length;
  35         int flags;
  36         struct dma_chan *channel;
  37         dma_cookie_t dma_cookie;
  38         struct dma_async_tx_descriptor *async_desc;
  39         struct completion completion_handle;
  40 };
  41
  42 struct xlnk_dmabuf_reg {
  43         xlnk_int_type dmabuf_fd;
  44         xlnk_intptr_type user_vaddr;
  45         struct dma_buf *dbuf;
  46         struct dma_buf_attachment *dbuf_attach;
  47         struct sg_table *dbuf_sg_table;
  48         int is_mapped;
  49         int dma_direction;
  50         struct list_head list;
  51 };
  52
  53 /* CROSSES KERNEL-USER BOUNDARY */
  54 union xlnk_args {
  55         struct __attribute__ ((__packed__)) {
  56                 xlnk_uint_type len;
  57                 xlnk_int_type id;
  58                 xlnk_intptr_type phyaddr;
  59                 xlnk_byte_type cacheable;
  60         } allocbuf;
  61         struct __attribute__ ((__packed__)) {
  62                 xlnk_uint_type id;
  63                 xlnk_intptr_type buf;
  64         } freebuf;
  65         struct __attribute__ ((__packed__)) {
  66                 xlnk_int_type dmabuf_fd;
  67                 xlnk_intptr_type user_addr;
  68         } dmabuf;
  69         struct __attribute__ ((__packed__)) {
  70                 xlnk_char_type name[64];
  71                 xlnk_intptr_type dmachan;
  72                 xlnk_uint_type bd_space_phys_addr;
  73                 xlnk_uint_type bd_space_size;
  74         } dmarequest;
  75 #define XLNK_MAX_APPWORDS 5
  76         struct __attribute__ ((__packed__)) {
  77                 xlnk_intptr_type dmachan;
  78                 xlnk_intptr_type buf;
  79                 xlnk_intptr_type buf2;
  80                 xlnk_uint_type buf_offset;
  81                 xlnk_uint_type len;
  82                 xlnk_uint_type bufflag;
  83                 xlnk_intptr_type sglist;
  84                 xlnk_uint_type sgcnt;
  85                 xlnk_enum_type dmadir;
  86                 xlnk_uint_type nappwords_i;
  87                 xlnk_uint_type appwords_i[XLNK_MAX_APPWORDS];
  88                 xlnk_uint_type nappwords_o;
  89                 xlnk_uint_type flag;
  90                 xlnk_intptr_type dmahandle; /* return value */
  91                 xlnk_uint_type last_bd_index;
  92         } dmasubmit;
  93         struct __attribute__ ((__packed__)) {
  94                 xlnk_intptr_type dmahandle;
  95                 xlnk_uint_type nappwords;
  96                 xlnk_uint_type appwords[XLNK_MAX_APPWORDS];
  97                 /* appwords array we only accept 5 max */
  98                 xlnk_uint_type flags;
  99         } dmawait;
 100         struct __attribute__ ((__packed__)) {
 101                 xlnk_intptr_type dmachan;
 102         } dmarelease;
 103         struct __attribute__ ((__packed__))  {
 104                 xlnk_intptr_type base;
 105                 xlnk_uint_type size;
 106                 xlnk_uint_type irqs[8];
 107                 xlnk_char_type name[32];
 108                 xlnk_uint_type id;
 109         } devregister;
 110         struct __attribute__ ((__packed__)) {
 111                 xlnk_intptr_type base;
 112         } devunregister;
 113         struct __attribute__ ((__packed__)) {
 114                 xlnk_char_type name[32];
 115                 xlnk_uint_type id;
 116                 xlnk_intptr_type base;
 117                 xlnk_uint_type size;
 118                 xlnk_uint_type chan_num;
 119                 xlnk_uint_type chan0_dir;
 120                 xlnk_uint_type chan0_irq;
 121                 xlnk_uint_type chan0_poll_mode;
 122                 xlnk_uint_type chan0_include_dre;
 123                 xlnk_uint_type chan0_data_width;
 124                 xlnk_uint_type chan1_dir;
 125                 xlnk_uint_type chan1_irq;
 126                 xlnk_uint_type chan1_poll_mode;
 127                 xlnk_uint_type chan1_include_dre;
 128                 xlnk_uint_type chan1_data_width;
 129         } dmaregister;
 130         struct __attribute__ ((__packed__)) {
 131                 xlnk_char_type name[32];
 132                 xlnk_uint_type id;
 133                 xlnk_intptr_type base;
 134                 xlnk_uint_type size;
 135                 xlnk_uint_type mm2s_chan_num;
 136                 xlnk_uint_type mm2s_chan_irq;
 137                 xlnk_uint_type s2mm_chan_num;
 138                 xlnk_uint_type s2mm_chan_irq;
 139         } mcdmaregister;
 140         struct __attribute__ ((__packed__)) {
 141                 xlnk_intptr_type phys_addr;
 142                 xlnk_uint_type size;
 143                 xlnk_int_type action;
 144         } cachecontrol;
 145         struct __attribute__ ((__packed__)) {
 146                 xlnk_intptr_type virt_addr;
 147                 xlnk_int_type size;
 148                 xlnk_enum_type dir;
 149                 xlnk_int_type flags;
 150                 xlnk_intptr_type phys_addr;
 151                 xlnk_intptr_type token;
 152         } memop;
 153 };
 154
 155 #endif