IB/ehca: Use common error code mapping instead of specific ones

Instead of one error mapping function for each potential error source
in ehca_mrmw.c, use a centralized function that handles all cases,
saving a three-figure line count.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

3 files changed, 15 insertions, 197 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
index 98f253147d2c..7c1656a7e1af 100644
--- a/drivers/infiniband/hw/ehca/ehca_mrmw.c
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -537,7 +537,7 @@ int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
                          "hca_hndl=%lx mr_hndl=%lx lkey=%x",
                          h_ret, mr, shca->ipz_hca_handle.handle,
                          e_mr->ipz_mr_handle.handle, mr->lkey);
-                ret = ehca_mrmw_map_hrc_query_mr(h_ret);
+                ret = ehca2ib_return_code(h_ret);
                 goto query_mr_exit1;
         }
         mr_attr->pd               = mr->pd;
@@ -597,7 +597,7 @@ int ehca_dereg_mr(struct ib_mr *mr)
                          "e_mr=%p hca_hndl=%lx mr_hndl=%lx mr->lkey=%x",
                          h_ret, shca, e_mr, shca->ipz_hca_handle.handle,
                          e_mr->ipz_mr_handle.handle, mr->lkey);
-                ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+                ret = ehca2ib_return_code(h_ret);
                 goto dereg_mr_exit0;
         }
 
@@ -637,7 +637,7 @@ struct ib_mw *ehca_alloc_mw(struct ib_pd *pd)
                 ehca_err(pd->device, "hipz_mw_allocate failed, h_ret=%lx "
                          "shca=%p hca_hndl=%lx mw=%p",
                          h_ret, shca, shca->ipz_hca_handle.handle, e_mw);
-                ib_mw = ERR_PTR(ehca_mrmw_map_hrc_alloc(h_ret));
+                ib_mw = ERR_PTR(ehca2ib_return_code(h_ret));
                 goto alloc_mw_exit1;
         }
         /* successful MW allocation */
@@ -680,7 +680,7 @@ int ehca_dealloc_mw(struct ib_mw *mw)
                          "mw=%p rkey=%x hca_hndl=%lx mw_hndl=%lx",
                          h_ret, shca, mw, mw->rkey, shca->ipz_hca_handle.handle,
                          e_mw->ipz_mw_handle.handle);
-                return ehca_mrmw_map_hrc_free_mw(h_ret);
+                return ehca2ib_return_code(h_ret);
         }
         /* successful deallocation */
         ehca_mw_delete(e_mw);
@@ -923,7 +923,7 @@ int ehca_dealloc_fmr(struct ib_fmr *fmr)
                          "hca_hndl=%lx fmr_hndl=%lx fmr->lkey=%x",
                          h_ret, e_fmr, shca->ipz_hca_handle.handle,
                          e_fmr->ipz_mr_handle.handle, fmr->lkey);
-                ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+                ret = ehca2ib_return_code(h_ret);
                 goto free_fmr_exit0;
         }
         /* successful deregistration */
@@ -964,7 +964,7 @@ int ehca_reg_mr(struct ehca_shca *shca,
         if (h_ret != H_SUCCESS) {
                 ehca_err(&shca->ib_device, "hipz_alloc_mr failed, h_ret=%lx "
                          "hca_hndl=%lx", h_ret, shca->ipz_hca_handle.handle);
-                ret = ehca_mrmw_map_hrc_alloc(h_ret);
+                ret = ehca2ib_return_code(h_ret);
                 goto ehca_reg_mr_exit0;
         }
 
@@ -1079,7 +1079,7 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
                                          shca->ipz_hca_handle.handle,
                                          e_mr->ipz_mr_handle.handle,
                                          e_mr->ib.ib_mr.lkey);
-                                ret = ehca_mrmw_map_hrc_rrpg_last(h_ret);
+                                ret = ehca2ib_return_code(h_ret);
                                 break;
                         } else
                                 ret = 0;
@@ -1090,7 +1090,7 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
                                  e_mr->ib.ib_mr.lkey,
                                  shca->ipz_hca_handle.handle,
                                  e_mr->ipz_mr_handle.handle);
-                        ret = ehca_mrmw_map_hrc_rrpg_notlast(h_ret);
+                        ret = ehca2ib_return_code(h_ret);
                         break;
                 } else
                         ret = 0;
@@ -1254,7 +1254,7 @@ int ehca_rereg_mr(struct ehca_shca *shca,
                                  h_ret, e_mr, shca->ipz_hca_handle.handle,
                                  e_mr->ipz_mr_handle.handle,
                                  e_mr->ib.ib_mr.lkey);
-                        ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+                        ret = ehca2ib_return_code(h_ret);
                         goto ehca_rereg_mr_exit0;
                 }
                 /* clean ehca_mr_t, without changing struct ib_mr and lock */
@@ -1351,7 +1351,7 @@ int ehca_unmap_one_fmr(struct ehca_shca *shca,
                                  h_ret, e_fmr, shca->ipz_hca_handle.handle,
                                  e_fmr->ipz_mr_handle.handle,
                                  e_fmr->ib.ib_fmr.lkey);
-                        ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+                        ret = ehca2ib_return_code(h_ret);
                         goto ehca_unmap_one_fmr_exit0;
                 }
                 /* clean ehca_mr_t, without changing lock */
@@ -1420,7 +1420,7 @@ int ehca_reg_smr(struct ehca_shca *shca,
                          shca->ipz_hca_handle.handle,
                          e_origmr->ipz_mr_handle.handle,
                          e_origmr->ib.ib_mr.lkey);
-                ret = ehca_mrmw_map_hrc_reg_smr(h_ret);
+                ret = ehca2ib_return_code(h_ret);
                 goto ehca_reg_smr_exit0;
         }
         /* successful registration */
@@ -1539,7 +1539,7 @@ int ehca_reg_maxmr(struct ehca_shca *shca,
                          h_ret, e_origmr, shca->ipz_hca_handle.handle,
                          e_origmr->ipz_mr_handle.handle,
                          e_origmr->ib.ib_mr.lkey);
-                return ehca_mrmw_map_hrc_reg_smr(h_ret);
+                return ehca2ib_return_code(h_ret);
         }
         /* successful registration */
         e_newmr->num_pages     = e_origmr->num_pages;
@@ -2043,177 +2043,6 @@ void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl,
 /*----------------------------------------------------------------------*/
 
 /*
- * map HIPZ rc to IB retcodes for MR/MW allocations
- * Used for hipz_mr_reg_alloc and hipz_mw_alloc.
- */
-int ehca_mrmw_map_hrc_alloc(const u64 hipz_rc)
-{
-        switch (hipz_rc) {
-        case H_SUCCESS:              /* successful completion */
-                return 0;
-        case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
-        case H_CONSTRAINED:          /* resource constraint */
-        case H_NO_MEM:
-                return -ENOMEM;
-        case H_BUSY:                 /* long busy */
-                return -EBUSY;
-        default:
-                return -EINVAL;
-        }
-} /* end ehca_mrmw_map_hrc_alloc() */
-
-/*----------------------------------------------------------------------*/
-
-/*
- * map HIPZ rc to IB retcodes for MR register rpage
- * Used for hipz_h_register_rpage_mr at registering last page
- */
-int ehca_mrmw_map_hrc_rrpg_last(const u64 hipz_rc)
-{
-        switch (hipz_rc) {
-        case H_SUCCESS:         /* registration complete */
-                return 0;
-        case H_PAGE_REGISTERED: /* page registered */
-        case H_ADAPTER_PARM:    /* invalid adapter handle */
-        case H_RH_PARM:         /* invalid resource handle */
-/*      case H_QT_PARM:            invalid queue type */
-        case H_PARAMETER:       /*
-                                 * invalid logical address,
-                                 * or count zero or greater 512
-                                 */
-        case H_TABLE_FULL:      /* page table full */
-        case H_HARDWARE:        /* HCA not operational */
-                return -EINVAL;
-        case H_BUSY:            /* long busy */
-                return -EBUSY;
-        default:
-                return -EINVAL;
-        }
-} /* end ehca_mrmw_map_hrc_rrpg_last() */
-
-/*----------------------------------------------------------------------*/
-
-/*
- * map HIPZ rc to IB retcodes for MR register rpage
- * Used for hipz_h_register_rpage_mr at registering one page, but not last page
- */
-int ehca_mrmw_map_hrc_rrpg_notlast(const u64 hipz_rc)
-{
-        switch (hipz_rc) {
-        case H_PAGE_REGISTERED: /* page registered */
-                return 0;
-        case H_SUCCESS:         /* registration complete */
-        case H_ADAPTER_PARM:    /* invalid adapter handle */
-        case H_RH_PARM:         /* invalid resource handle */
-/*      case H_QT_PARM:            invalid queue type */
-        case H_PARAMETER:       /*
-                                 * invalid logical address,
-                                 * or count zero or greater 512
-                                 */
-        case H_TABLE_FULL:      /* page table full */
-        case H_HARDWARE:        /* HCA not operational */
-                return -EINVAL;
-        case H_BUSY:            /* long busy */
-                return -EBUSY;
-        default:
-                return -EINVAL;
-        }
-} /* end ehca_mrmw_map_hrc_rrpg_notlast() */
-
-/*----------------------------------------------------------------------*/
-
-/* map HIPZ rc to IB retcodes for MR query. Used for hipz_mr_query. */
-int ehca_mrmw_map_hrc_query_mr(const u64 hipz_rc)
-{
-        switch (hipz_rc) {
-        case H_SUCCESS:              /* successful completion */
-                return 0;
-        case H_ADAPTER_PARM:         /* invalid adapter handle */
-        case H_RH_PARM:              /* invalid resource handle */
-                return -EINVAL;
-        case H_BUSY:                 /* long busy */
-                return -EBUSY;
-        default:
-                return -EINVAL;
-        }
-} /* end ehca_mrmw_map_hrc_query_mr() */
-
-/*----------------------------------------------------------------------*/
-/*----------------------------------------------------------------------*/
-
-/*
- * map HIPZ rc to IB retcodes for freeing MR resource
- * Used for hipz_h_free_resource_mr
- */
-int ehca_mrmw_map_hrc_free_mr(const u64 hipz_rc)
-{
-        switch (hipz_rc) {
-        case H_SUCCESS:      /* resource freed */
-                return 0;
-        case H_ADAPTER_PARM: /* invalid adapter handle */
-        case H_RH_PARM:      /* invalid resource handle */
-        case H_R_STATE:      /* invalid resource state */
-        case H_HARDWARE:     /* HCA not operational */
-                return -EINVAL;
-        case H_RESOURCE:     /* Resource in use */
-        case H_BUSY:         /* long busy */
-                return -EBUSY;
-        default:
-                return -EINVAL;
-        }
-} /* end ehca_mrmw_map_hrc_free_mr() */
-
-/*----------------------------------------------------------------------*/
-
-/*
- * map HIPZ rc to IB retcodes for freeing MW resource
- * Used for hipz_h_free_resource_mw
- */
-int ehca_mrmw_map_hrc_free_mw(const u64 hipz_rc)
-{
-        switch (hipz_rc) {
-        case H_SUCCESS:      /* resource freed */
-                return 0;
-        case H_ADAPTER_PARM: /* invalid adapter handle */
-        case H_RH_PARM:      /* invalid resource handle */
-        case H_R_STATE:      /* invalid resource state */
-        case H_HARDWARE:     /* HCA not operational */
-                return -EINVAL;
-        case H_RESOURCE:     /* Resource in use */
-        case H_BUSY:         /* long busy */
-                return -EBUSY;
-        default:
-                return -EINVAL;
-        }
-} /* end ehca_mrmw_map_hrc_free_mw() */
-
-/*----------------------------------------------------------------------*/
-
-/*
- * map HIPZ rc to IB retcodes for SMR registrations
- * Used for hipz_h_register_smr.
- */
-int ehca_mrmw_map_hrc_reg_smr(const u64 hipz_rc)
-{
-        switch (hipz_rc) {
-        case H_SUCCESS:              /* successful completion */
-                return 0;
-        case H_ADAPTER_PARM:         /* invalid adapter handle */
-        case H_RH_PARM:              /* invalid resource handle */
-        case H_MEM_PARM:             /* invalid MR virtual address */
-        case H_MEM_ACCESS_PARM:      /* invalid access controls */
-        case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
-                return -EINVAL;
-        case H_BUSY:                 /* long busy */
-                return -EBUSY;
-        default:
-                return -EINVAL;
-        }
-} /* end ehca_mrmw_map_hrc_reg_smr() */
-
-/*----------------------------------------------------------------------*/
-
-/*
  * MR destructor and constructor
  * used in Reregister MR verb, sets all fields in ehca_mr_t to 0,
  * except struct ib_mr and spinlock
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.h b/drivers/infiniband/hw/ehca/ehca_mrmw.h
index d936e40a5748..fb69eded3b48 100644
--- a/drivers/infiniband/hw/ehca/ehca_mrmw.h
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.h
@@ -121,20 +121,6 @@ void ehca_mrmw_set_pgsize_hipz_acl(u32 *hipz_acl);
 void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl,
                                int *ib_acl);
 
-int ehca_mrmw_map_hrc_alloc(const u64 hipz_rc);
-
-int ehca_mrmw_map_hrc_rrpg_last(const u64 hipz_rc);
-
-int ehca_mrmw_map_hrc_rrpg_notlast(const u64 hipz_rc);
-
-int ehca_mrmw_map_hrc_query_mr(const u64 hipz_rc);
-
-int ehca_mrmw_map_hrc_free_mr(const u64 hipz_rc);
-
-int ehca_mrmw_map_hrc_free_mw(const u64 hipz_rc);
-
-int ehca_mrmw_map_hrc_reg_smr(const u64 hipz_rc);
-
 void ehca_mr_deletenew(struct ehca_mr *mr);
 
 #endif  /*_EHCA_MRMW_H_*/
diff --git a/drivers/infiniband/hw/ehca/ehca_tools.h b/drivers/infiniband/hw/ehca/ehca_tools.h
index 03b185f873da..fd8238b32153 100644
--- a/drivers/infiniband/hw/ehca/ehca_tools.h
+++ b/drivers/infiniband/hw/ehca/ehca_tools.h
@@ -161,8 +161,11 @@ static inline int ehca2ib_return_code(u64 ehca_rc)
         switch (ehca_rc) {
         case H_SUCCESS:
                 return 0;
+        case H_RESOURCE:             /* Resource in use */
         case H_BUSY:
                 return -EBUSY;
+        case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
+        case H_CONSTRAINED:          /* resource constraint */
         case H_NO_MEM:
                 return -ENOMEM;
         default: