cnic: Unify kcq allocation for all devices.

By creating a common data stucture kcq_info for all devices, the kcq
(kernel completion queue) for all devices can be allocated by common
code.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 87 insertions, 56 deletions

diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index df6a0ccf0655..c1f0d16dd47a 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -804,7 +804,7 @@ static void cnic_free_resc(struct cnic_dev *dev)
         cnic_free_dma(dev, &cp->conn_buf_info);
         cnic_free_dma(dev, &cp->kwq_info);
         cnic_free_dma(dev, &cp->kwq_16_data_info);
-        cnic_free_dma(dev, &cp->kcq_info);
+        cnic_free_dma(dev, &cp->kcq1.dma);
         kfree(cp->iscsi_tbl);
         cp->iscsi_tbl = NULL;
         kfree(cp->ctx_tbl);
@@ -863,6 +863,37 @@ static int cnic_alloc_context(struct cnic_dev *dev)
         return 0;
 }
 
+static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
+{
+        int err, i, is_bnx2 = 0;
+        struct kcqe **kcq;
+
+        if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
+                is_bnx2 = 1;
+
+        err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
+        if (err)
+                return err;
+
+        kcq = (struct kcqe **) info->dma.pg_arr;
+        info->kcq = kcq;
+
+        if (is_bnx2)
+                return 0;
+
+        for (i = 0; i < KCQ_PAGE_CNT; i++) {
+                struct bnx2x_bd_chain_next *next =
+                        (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
+                int j = i + 1;
+
+                if (j >= KCQ_PAGE_CNT)
+                        j = 0;
+                next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
+                next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
+        }
+        return 0;
+}
+
 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 {
         struct cnic_local *cp = dev->cnic_priv;
@@ -954,10 +985,9 @@ static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
                 goto error;
         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 
-        ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
+        ret = cnic_alloc_kcq(dev, &cp->kcq1);
         if (ret)
                 goto error;
-        cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
 
         ret = cnic_alloc_context(dev);
         if (ret)
@@ -1076,22 +1106,9 @@ static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
                         j++;
         }
 
-        ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
+        ret = cnic_alloc_kcq(dev, &cp->kcq1);
         if (ret)
                 goto error;
-        cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
-
-        for (i = 0; i < KCQ_PAGE_CNT; i++) {
-                struct bnx2x_bd_chain_next *next =
-                        (struct bnx2x_bd_chain_next *)
-                        &cp->kcq[i][MAX_KCQE_CNT];
-                int j = i + 1;
-
-                if (j >= KCQ_PAGE_CNT)
-                        j = 0;
-                next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
-                next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
-        }
 
         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
@@ -2135,7 +2152,7 @@ static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
         ri &= MAX_KCQ_IDX;
 
         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
-                kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
+                kcqe = &cp->kcq1.kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
                 cp->completed_kcq[kcqe_cnt++] = kcqe;
                 i = cp->next_idx(i);
                 ri = i & MAX_KCQ_IDX;
@@ -2219,7 +2236,7 @@ static int cnic_service_bnx2(void *data, void *status_blk)
         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
 
         hw_prod = sblk->status_completion_producer_index;
-        sw_prod = cp->kcq_prod_idx;
+        sw_prod = cp->kcq1.sw_prod_idx;
         while (sw_prod != hw_prod) {
                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
                 if (kcqe_cnt == 0)
@@ -2238,9 +2255,9 @@ static int cnic_service_bnx2(void *data, void *status_blk)
         }
 
 done:
-        CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
+        CNIC_WR16(dev, cp->kcq1.io_addr, sw_prod);
 
-        cp->kcq_prod_idx = sw_prod;
+        cp->kcq1.sw_prod_idx = sw_prod;
 
         cnic_chk_pkt_rings(cp);
         return status_idx;
@@ -2258,7 +2275,7 @@ static void cnic_service_bnx2_msix(unsigned long data)
         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
 
         hw_prod = status_blk->status_completion_producer_index;
-        sw_prod = cp->kcq_prod_idx;
+        sw_prod = cp->kcq1.sw_prod_idx;
         while (sw_prod != hw_prod) {
                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
                 if (kcqe_cnt == 0)
@@ -2277,8 +2294,8 @@ static void cnic_service_bnx2_msix(unsigned long data)
         }
 
 done:
-        CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
-        cp->kcq_prod_idx = sw_prod;
+        CNIC_WR16(dev, cp->kcq1.io_addr, sw_prod);
+        cp->kcq1.sw_prod_idx = sw_prod;
 
         cnic_chk_pkt_rings(cp);
 
@@ -2290,11 +2307,11 @@ done:
 static void cnic_doirq(struct cnic_dev *dev)
 {
         struct cnic_local *cp = dev->cnic_priv;
-        u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
+        u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
 
         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
                 prefetch(cp->status_blk.gen);
-                prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
+                prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
 
                 tasklet_schedule(&cp->cnic_irq_task);
         }
@@ -2354,7 +2371,7 @@ static void cnic_service_bnx2x_bh(unsigned long data)
 
         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
         hw_prod = cp->hw_idx(hw_prod);
-        sw_prod = cp->kcq_prod_idx;
+        sw_prod = cp->kcq1.sw_prod_idx;
         while (sw_prod != hw_prod) {
                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
                 if (kcqe_cnt == 0)
@@ -2373,11 +2390,11 @@ static void cnic_service_bnx2x_bh(unsigned long data)
         }
 
 done:
-        CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
+        CNIC_WR16(dev, cp->kcq1.io_addr, sw_prod + MAX_KCQ_IDX);
         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
                            status_idx, IGU_INT_ENABLE, 1);
 
-        cp->kcq_prod_idx = sw_prod;
+        cp->kcq1.sw_prod_idx = sw_prod;
 }
 
 static int cnic_service_bnx2x(void *data, void *status_blk)
@@ -3711,7 +3728,7 @@ static int cnic_start_bnx2_hw(struct cnic_dev *dev)
         struct cnic_local *cp = dev->cnic_priv;
         struct cnic_eth_dev *ethdev = cp->ethdev;
         struct status_block *sblk = cp->status_blk.gen;
-        u32 val;
+        u32 val, kcq_cid_addr, kwq_cid_addr;
         int err;
 
         cnic_set_bnx2_mac(dev);
@@ -3736,7 +3753,7 @@ static int cnic_start_bnx2_hw(struct cnic_dev *dev)
         cnic_init_context(dev, KWQ_CID);
         cnic_init_context(dev, KCQ_CID);
 
-        cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
+        kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
 
         cp->max_kwq_idx = MAX_KWQ_IDX;
@@ -3752,50 +3769,58 @@ static int cnic_start_bnx2_hw(struct cnic_dev *dev)
         /* Initialize the kernel work queue context. */
         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
-        cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
+        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
 
         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
-        cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
+        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
 
         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
-        cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
+        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
 
         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
-        cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
+        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
 
         val = (u32) cp->kwq_info.pgtbl_map;
-        cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
+        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
+
+        kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
+        cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
 
-        cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
-        cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
+        cp->kcq1.sw_prod_idx = 0;
+        cp->kcq1.hw_prod_idx_ptr =
+                (u16 *) &sblk->status_completion_producer_index;
 
-        cp->kcq_prod_idx = 0;
+        cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
 
         /* Initialize the kernel complete queue context. */
         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
-        cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
+        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
 
         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
-        cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
+        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
 
         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
-        cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
+        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
 
-        val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
-        cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
+        val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
+        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
 
-        val = (u32) cp->kcq_info.pgtbl_map;
-        cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
+        val = (u32) cp->kcq1.dma.pgtbl_map;
+        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
 
         cp->int_num = 0;
         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
+                struct status_block_msix *msblk = cp->status_blk.bnx2;
                 u32 sb_id = cp->status_blk_num;
                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
 
+                cp->kcq1.hw_prod_idx_ptr =
+                        (u16 *) &msblk->status_completion_producer_index;
+                cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
-                cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
-                cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
+                cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
+                cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
         }
 
         /* Enable Commnad Scheduler notification when we write to the
@@ -4145,28 +4170,34 @@ static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
         if (ret)
                 return -ENOMEM;
 
-        cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
+        cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
-        cp->kcq_prod_idx = 0;
+        cp->kcq1.sw_prod_idx = 0;
+
+        cp->kcq1.hw_prod_idx_ptr =
+                &cp->status_blk.bnx2x->c_status_block.index_values[
+                        HC_INDEX_C_ISCSI_EQ_CONS];
+        cp->kcq1.status_idx_ptr =
+                &cp->status_blk.bnx2x->c_status_block.status_block_index;
 
         cnic_get_bnx2x_iscsi_info(dev);
 
         /* Only 1 EQ */
-        CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
+        CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
-                cp->kcq_info.pg_map_arr[1] & 0xffffffff);
+                cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
-                (u64) cp->kcq_info.pg_map_arr[1] >> 32);
+                (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
-                cp->kcq_info.pg_map_arr[0] & 0xffffffff);
+                cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
-                (u64) cp->kcq_info.pg_map_arr[0] >> 32);
+                (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
@@ -4394,7 +4425,7 @@ static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
                   0);
         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->func, 0), 0);
-        CNIC_WR16(dev, cp->kcq_io_addr, 0);
+        CNIC_WR16(dev, cp->kcq1.io_addr, 0);
         cnic_free_resc(dev);
 }