i40iw: Fix parsing of query/commit FPM buffers

Parsing of commit/query Host Memory Cache Function Private Memory
is not skipping over reserved fields and incorrectly assigning
those values into object's base/cnt/max_cnt fields. Skip over
reserved fields and set correct values. Also correct memory
alignment requirement for commit/query FPM buffers.

Signed-off-by: Chien Tin Tung <chien.tin.tung@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Christopher N Bednarz <christopher.n.bednarz@intel.com>
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

2 files changed, 83 insertions, 42 deletions

diff --git a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
index 9ec1ae9a82c9..ef4a73cd1710 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
@@ -130,20 +130,32 @@ static enum i40iw_status_code i40iw_sc_parse_fpm_commit_buf(
         u64 base = 0;
         u32 i, j;
         u32 k = 0;
-        u32 low;
 
         /* copy base values in obj_info */
-        for (i = I40IW_HMC_IW_QP, j = 0;
-                        i <= I40IW_HMC_IW_PBLE; i++, j += 8) {
+        for (i = I40IW_HMC_IW_QP, j = 0; i <= I40IW_HMC_IW_PBLE; i++, j += 8) {
+                if ((i == I40IW_HMC_IW_SRQ) ||
+                        (i == I40IW_HMC_IW_FSIMC) ||
+                        (i == I40IW_HMC_IW_FSIAV)) {
+                        info[i].base = 0;
+                        info[i].cnt = 0;
+                        continue;
+                }
                 get_64bit_val(buf, j, &temp);
                 info[i].base = RS_64_1(temp, 32) * 512;
                 if (info[i].base > base) {
                         base = info[i].base;
                         k = i;
                 }
-                low = (u32)(temp);
-                if (low)
-                        info[i].cnt = low;
+                if (i == I40IW_HMC_IW_APBVT_ENTRY) {
+                        info[i].cnt = 1;
+                        continue;
+                }
+                if (i == I40IW_HMC_IW_QP)
+                        info[i].cnt = (u32)RS_64(temp, I40IW_QUERY_FPM_MAX_QPS);
+                else if (i == I40IW_HMC_IW_CQ)
+                        info[i].cnt = (u32)RS_64(temp, I40IW_QUERY_FPM_MAX_CQS);
+                else
+                        info[i].cnt = (u32)(temp);
         }
         size = info[k].cnt * info[k].size + info[k].base;
         if (size & 0x1FFFFF)
@@ -155,6 +167,31 @@ static enum i40iw_status_code i40iw_sc_parse_fpm_commit_buf(
 }
 
 /**
+ * i40iw_sc_decode_fpm_query() - Decode a 64 bit value into max count and size
+ * @buf: ptr to fpm query buffer
+ * @buf_idx: index into buf
+ * @info: ptr to i40iw_hmc_obj_info struct
+ * @rsrc_idx: resource index into info
+ *
+ * Decode a 64 bit value from fpm query buffer into max count and size
+ */
+static u64 i40iw_sc_decode_fpm_query(u64 *buf,
+                                            u32 buf_idx,
+                                            struct i40iw_hmc_obj_info *obj_info,
+                                            u32 rsrc_idx)
+{
+        u64 temp;
+        u32 size;
+
+        get_64bit_val(buf, buf_idx, &temp);
+        obj_info[rsrc_idx].max_cnt = (u32)temp;
+        size = (u32)RS_64_1(temp, 32);
+        obj_info[rsrc_idx].size = LS_64_1(1, size);
+
+        return temp;
+}
+
+/**
  * i40iw_sc_parse_fpm_query_buf() - parses fpm query buffer
  * @buf: ptr to fpm query buffer
  * @info: ptr to i40iw_hmc_obj_info struct
@@ -168,9 +205,9 @@ static enum i40iw_status_code i40iw_sc_parse_fpm_query_buf(
                                 struct i40iw_hmc_info *hmc_info,
                                 struct i40iw_hmc_fpm_misc *hmc_fpm_misc)
 {
-        u64 temp;
         struct i40iw_hmc_obj_info *obj_info;
-        u32 i, j, size;
+        u64 temp;
+        u32 size;
         u16 max_pe_sds;
 
         obj_info = hmc_info->hmc_obj;
@@ -185,41 +222,52 @@ static enum i40iw_status_code i40iw_sc_parse_fpm_query_buf(
         hmc_fpm_misc->max_sds = max_pe_sds;
         hmc_info->sd_table.sd_cnt = max_pe_sds + hmc_info->first_sd_index;
 
-        for (i = I40IW_HMC_IW_QP, j = 8;
-             i <= I40IW_HMC_IW_ARP; i++, j += 8) {
-                get_64bit_val(buf, j, &temp);
-                if (i == I40IW_HMC_IW_QP)
-                        obj_info[i].max_cnt = (u32)RS_64(temp, I40IW_QUERY_FPM_MAX_QPS);
-                else if (i == I40IW_HMC_IW_CQ)
-                        obj_info[i].max_cnt = (u32)RS_64(temp, I40IW_QUERY_FPM_MAX_CQS);
-                else
-                        obj_info[i].max_cnt = (u32)temp;
+        get_64bit_val(buf, 8, &temp);
+        obj_info[I40IW_HMC_IW_QP].max_cnt = (u32)RS_64(temp, I40IW_QUERY_FPM_MAX_QPS);
+        size = (u32)RS_64_1(temp, 32);
+        obj_info[I40IW_HMC_IW_QP].size = LS_64_1(1, size);
 
-                size = (u32)RS_64_1(temp, 32);
-                obj_info[i].size = ((u64)1 << size);
-        }
-        for (i = I40IW_HMC_IW_MR, j = 48;
-                        i <= I40IW_HMC_IW_PBLE; i++, j += 8) {
-                get_64bit_val(buf, j, &temp);
-                obj_info[i].max_cnt = (u32)temp;
-                size = (u32)RS_64_1(temp, 32);
-                obj_info[i].size = LS_64_1(1, size);
-        }
+        get_64bit_val(buf, 16, &temp);
+        obj_info[I40IW_HMC_IW_CQ].max_cnt = (u32)RS_64(temp, I40IW_QUERY_FPM_MAX_CQS);
+        size = (u32)RS_64_1(temp, 32);
+        obj_info[I40IW_HMC_IW_CQ].size = LS_64_1(1, size);
+
+        i40iw_sc_decode_fpm_query(buf, 32, obj_info, I40IW_HMC_IW_HTE);
+        i40iw_sc_decode_fpm_query(buf, 40, obj_info, I40IW_HMC_IW_ARP);
+
+        obj_info[I40IW_HMC_IW_APBVT_ENTRY].size = 8192;
+        obj_info[I40IW_HMC_IW_APBVT_ENTRY].max_cnt = 1;
+
+        i40iw_sc_decode_fpm_query(buf, 48, obj_info, I40IW_HMC_IW_MR);
+        i40iw_sc_decode_fpm_query(buf, 56, obj_info, I40IW_HMC_IW_XF);
 
-        get_64bit_val(buf, 120, &temp);
-        hmc_fpm_misc->max_ceqs = (u8)RS_64(temp, I40IW_QUERY_FPM_MAX_CEQS);
-        get_64bit_val(buf, 120, &temp);
-        hmc_fpm_misc->ht_multiplier = RS_64(temp, I40IW_QUERY_FPM_HTMULTIPLIER);
-        get_64bit_val(buf, 120, &temp);
-        hmc_fpm_misc->timer_bucket = RS_64(temp, I40IW_QUERY_FPM_TIMERBUCKET);
         get_64bit_val(buf, 64, &temp);
+        obj_info[I40IW_HMC_IW_XFFL].max_cnt = (u32)temp;
+        obj_info[I40IW_HMC_IW_XFFL].size = 4;
         hmc_fpm_misc->xf_block_size = RS_64(temp, I40IW_QUERY_FPM_XFBLOCKSIZE);
         if (!hmc_fpm_misc->xf_block_size)
                 return I40IW_ERR_INVALID_SIZE;
+
+        i40iw_sc_decode_fpm_query(buf, 72, obj_info, I40IW_HMC_IW_Q1);
+
         get_64bit_val(buf, 80, &temp);
+        obj_info[I40IW_HMC_IW_Q1FL].max_cnt = (u32)temp;
+        obj_info[I40IW_HMC_IW_Q1FL].size = 4;
         hmc_fpm_misc->q1_block_size = RS_64(temp, I40IW_QUERY_FPM_Q1BLOCKSIZE);
         if (!hmc_fpm_misc->q1_block_size)
                 return I40IW_ERR_INVALID_SIZE;
+
+        i40iw_sc_decode_fpm_query(buf, 88, obj_info, I40IW_HMC_IW_TIMER);
+
+        get_64bit_val(buf, 112, &temp);
+        obj_info[I40IW_HMC_IW_PBLE].max_cnt = (u32)temp;
+        obj_info[I40IW_HMC_IW_PBLE].size = 8;
+
+        get_64bit_val(buf, 120, &temp);
+        hmc_fpm_misc->max_ceqs = (u8)RS_64(temp, I40IW_QUERY_FPM_MAX_CEQS);
+        hmc_fpm_misc->ht_multiplier = RS_64(temp, I40IW_QUERY_FPM_HTMULTIPLIER);
+        hmc_fpm_misc->timer_bucket = RS_64(temp, I40IW_QUERY_FPM_TIMERBUCKET);
+
         return 0;
 }
 
@@ -3392,13 +3440,6 @@ enum i40iw_status_code i40iw_sc_init_iw_hmc(struct i40iw_sc_dev *dev, u8 hmc_fn_
                 hmc_info->sd_table.sd_entry = virt_mem.va;
         }
 
-        /* fill size of objects which are fixed */
-        hmc_info->hmc_obj[I40IW_HMC_IW_XFFL].size = 4;
-        hmc_info->hmc_obj[I40IW_HMC_IW_Q1FL].size = 4;
-        hmc_info->hmc_obj[I40IW_HMC_IW_PBLE].size = 8;
-        hmc_info->hmc_obj[I40IW_HMC_IW_APBVT_ENTRY].size = 8192;
-        hmc_info->hmc_obj[I40IW_HMC_IW_APBVT_ENTRY].max_cnt = 1;
-
         return ret_code;
 }
 
diff --git a/drivers/infiniband/hw/i40iw/i40iw_d.h b/drivers/infiniband/hw/i40iw/i40iw_d.h
index a39ac12b6a7e..2ebaadbed379 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_d.h
+++ b/drivers/infiniband/hw/i40iw/i40iw_d.h
@@ -1507,8 +1507,8 @@ enum {
         I40IW_CQ0_ALIGNMENT_MASK =              (256 - 1),
         I40IW_HOST_CTX_ALIGNMENT_MASK =         (4 - 1),
         I40IW_SHADOWAREA_MASK =                 (128 - 1),
-        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK =    0,
-        I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK =   0
+        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK =    (4 - 1),
+        I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK =   (4 - 1)
 };
 
 enum i40iw_alignment {