152840/ice.i.4

   1 struct scatterlist {
   2         struct page *page;
   3         unsigned int offset;
   4 };
   5 inline void sg_set_buf(struct scatterlist *sg, const void *buf)
   6 {
   7         sg->page = ((unsigned long)buf - 0x80000000 >> 12) - 0x0C000000;
   8         sg->offset = ((unsigned long)buf & 1UL << 12);
   9 }
  10 inline void sg_init_one(struct scatterlist *sg, const void *buf)
  11 {
  12         memset(sg, 0, sizeof(*sg));
  13         sg_set_buf(sg, buf);
  14 };
  15 static unsigned int mmc_sd_num_wr_blocks(struct mmc_card *card)
  16 {
  17         unsigned int blocks;
  18         struct scatterlist sg;
  19         sg_init_one(&sg, &blocks);
  20 }
  21
  22 int mmc_blk_issue_rq()
  23 {
  24         struct mmc_card *card;
  25         unsigned int blocks;
  26         blocks = mmc_sd_num_wr_blocks(card);
  27         if (blocks)
  28                 local_irq_disable();
  29 }