qed: Cache alignemnt padding to match host

Improve PCI performance by adjusting padding sizes to match those of the
host machine's cacheline.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index 072d950..d73e3c2 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -1227,6 +1227,10 @@ static void qed_init_cache_line_size(struct qed_hwfn *p_hwfn,
                        L1_CACHE_BYTES, wr_mbs);
 
        STORE_RT_REG(p_hwfn, PGLUE_REG_B_CACHE_LINE_SIZE_RT_OFFSET, val);
+       if (val > 0) {
+               STORE_RT_REG(p_hwfn, PSWRQ2_REG_DRAM_ALIGN_WR_RT_OFFSET, val);
+               STORE_RT_REG(p_hwfn, PSWRQ2_REG_DRAM_ALIGN_RD_RT_OFFSET, val);
+       }
 }
 
 static int qed_hw_init_common(struct qed_hwfn *p_hwfn,
@@ -1433,8 +1437,15 @@ qed_hw_init_pf_doorbell_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 static int qed_hw_init_port(struct qed_hwfn *p_hwfn,
                            struct qed_ptt *p_ptt, int hw_mode)
 {
-       return qed_init_run(p_hwfn, p_ptt, PHASE_PORT,
-                           p_hwfn->port_id, hw_mode);
+       int rc = 0;
+
+       rc = qed_init_run(p_hwfn, p_ptt, PHASE_PORT, p_hwfn->port_id, hw_mode);
+       if (rc)
+               return rc;
+
+       qed_wr(p_hwfn, p_ptt, PGLUE_B_REG_MASTER_WRITE_PAD_ENABLE, 0);
+
+       return 0;
 }
 
 static int qed_hw_init_pf(struct qed_hwfn *p_hwfn,

diff --git a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
index 6abf918..67172d7 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
@@ -1559,6 +1559,7 @@
 #define PGLUE_B_REG_PGL_ADDR_EC_F0_K2 0x2aaf9cUL
 #define PGLUE_B_REG_PGL_ADDR_F0_F0_K2 0x2aafa0UL
 #define PGLUE_B_REG_PGL_ADDR_F4_F0_K2 0x2aafa4UL
+#define PGLUE_B_REG_MASTER_WRITE_PAD_ENABLE 0x2aae30UL
 #define NIG_REG_TSGEN_FREECNT_UPDATE_K2 0x509008UL
 #define CNIG_REG_NIG_PORT0_CONF_K2 0x218200UL