From: "Mintz, Yuval" <Yuval.Mintz@cavium.com>
Date: Mon, 29 May 2017 09:53:14 +0300
Subject: qed: Cache alignemnt padding to match host
Patch-mainline: v4.13-rc1
Git-commit: fc6575bc498cb86e33a39a399355fd7e74ef2002
References: bsc#1050536 FATE#322898 bsc#1050538 FATE#322897
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/qlogic/qed/qed_dev.c | 15 +++++++++++++--
drivers/net/ethernet/qlogic/qed/qed_reg_addr.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)
--- 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(str
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_h
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,
--- 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