gcc/testsuite/gcc.target/alpha/pr66140.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -mcpu=ev4" } */
   3
   4 struct scsi_cmnd {
   5         int sc_data_direction;
   6 };
   7 struct lpfc_hba {
   8         unsigned cfg_total_seg_cnt;
   9 };
  10 struct lpfc_scsi_buf {
  11         struct scsi_cmnd *pCmd;
  12         unsigned seg_cnt;
  13         unsigned *fcp_bpl;
  14 };
  15
  16 extern void *sg_next(void *sg);
  17 extern void *scsi_sglist(struct scsi_cmnd *cmd);
  18 extern unsigned scsi_sg_count(struct scsi_cmnd *cmd);
  19
  20 static inline void dma_map_sg_attrs(void *sg, int nents, int dir)
  21 {
  22         int i;
  23
  24         for (i = 0; i < nents; i++, sg = sg_next(sg))
  25                 ;
  26
  27         if (!dir)
  28                 asm volatile( "call_pal %0" : : "i"(129));
  29 }
  30
  31 static inline void lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
  32                                      unsigned *pde5)
  33 {
  34         void *sgde;
  35         int i;
  36
  37         *pde5 = (((0x85 & 0x000000ffu) << 24) | (*pde5 & ~(0x000000ffu << 24)));
  38         for (i = 0, sgde = scsi_sglist(sc); i < 2; i++, sgde = sg_next(sgde))
  39                 ;
  40 }
  41
  42 void lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
  43                                   struct lpfc_scsi_buf *lpfc_cmd)
  44 {
  45         struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
  46         unsigned *bpl = lpfc_cmd->fcp_bpl;
  47
  48         dma_map_sg_attrs(scsi_sglist(scsi_cmnd),
  49                          scsi_sg_count(scsi_cmnd),
  50                          scsi_cmnd->sc_data_direction);
  51         if (lpfc_cmd->seg_cnt > phba->cfg_total_seg_cnt)
  52                 lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl);
  53 }