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drivers: net: xgene: Separate set_speed from mac_init

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Since mac_init is too heavy to be called when the link changes,
moved the speed_set configuration to a new function and added
mac_ops->set_speed function pointer.  This function will be
called from adjust_link callback.

Added cases for 10/100 support for SGMII based 1G interface.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Fushen Chen <fchen@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Iyappan Subramanian 2016-07-25 17:12:36 -07:00 committed by David S. Miller
parent c43212bb7b
commit 9a8c5ddedd
7 changed files with 151 additions and 33 deletions
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30
drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
View File

@ -512,14 +512,11 @@ static void xgene_enet_configure_clock(struct xgene_enet_pdata *pdata)
#endif
}
static void xgene_gmac_init(struct xgene_enet_pdata *pdata)
static void xgene_gmac_set_speed(struct xgene_enet_pdata *pdata)
{
struct device *dev = &pdata->pdev->dev;
u32 value, mc2;
u32 intf_ctl, rgmii;
u32 icm0, icm2;
xgene_gmac_reset(pdata);
u32 icm0, icm2, mc2;
u32 intf_ctl, rgmii, value;
xgene_enet_rd_mcx_csr(pdata, ICM_CONFIG0_REG_0_ADDR, &icm0);
xgene_enet_rd_mcx_csr(pdata, ICM_CONFIG2_REG_0_ADDR, &icm2);
@ -564,7 +561,19 @@ static void xgene_gmac_init(struct xgene_enet_pdata *pdata)
mc2 |= FULL_DUPLEX2 | PAD_CRC;
xgene_enet_wr_mcx_mac(pdata, MAC_CONFIG_2_ADDR, mc2);
xgene_enet_wr_mcx_mac(pdata, INTERFACE_CONTROL_ADDR, intf_ctl);
xgene_enet_wr_csr(pdata, RGMII_REG_0_ADDR, rgmii);
xgene_enet_configure_clock(pdata);
xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG0_REG_0_ADDR, icm0);
xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG2_REG_0_ADDR, icm2);
}
static void xgene_gmac_init(struct xgene_enet_pdata *pdata)
{
u32 value;
xgene_gmac_reset(pdata);
xgene_gmac_set_speed(pdata);
xgene_gmac_set_mac_addr(pdata);
/* Adjust MDC clock frequency */
@ -579,15 +588,10 @@ static void xgene_gmac_init(struct xgene_enet_pdata *pdata)
/* Rtype should be copied from FP */
xgene_enet_wr_csr(pdata, RSIF_RAM_DBG_REG0_ADDR, 0);
xgene_enet_wr_csr(pdata, RGMII_REG_0_ADDR, rgmii);
xgene_enet_configure_clock(pdata);
/* Rx-Tx traffic resume */
xgene_enet_wr_csr(pdata, CFG_LINK_AGGR_RESUME_0_ADDR, TX_PORT0);
xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG0_REG_0_ADDR, icm0);
xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG2_REG_0_ADDR, icm2);
xgene_enet_rd_mcx_csr(pdata, RX_DV_GATE_REG_0_ADDR, &value);
value &= ~TX_DV_GATE_EN0;
value &= ~RX_DV_GATE_EN0;
@ -724,12 +728,13 @@ static int xgene_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
static void xgene_enet_adjust_link(struct net_device *ndev)
{
struct xgene_enet_pdata *pdata = netdev_priv(ndev);
const struct xgene_mac_ops *mac_ops = pdata->mac_ops;
struct phy_device *phydev = pdata->phy_dev;
if (phydev->link) {
if (pdata->phy_speed != phydev->speed) {
pdata->phy_speed = phydev->speed;
xgene_gmac_init(pdata);
mac_ops->set_speed(pdata);
xgene_gmac_rx_enable(pdata);
xgene_gmac_tx_enable(pdata);
phy_print_status(phydev);
@ -890,6 +895,7 @@ const struct xgene_mac_ops xgene_gmac_ops = {
.tx_enable = xgene_gmac_tx_enable,
.rx_disable = xgene_gmac_rx_disable,
.tx_disable = xgene_gmac_tx_disable,
.set_speed = xgene_gmac_set_speed,
.set_mac_addr = xgene_gmac_set_mac_addr,
};

2
drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
View File

@ -104,6 +104,8 @@ enum xgene_enet_rm {
#define RECOMBBUF BIT(27)
#define MAC_OFFSET 0x30
#define OFFSET_4 0x04
#define OFFSET_8 0x08
#define BLOCK_ETH_CSR_OFFSET 0x2000
#define BLOCK_ETH_CLE_CSR_OFFSET 0x6000

6
drivers/net/ethernet/apm/xgene/xgene_enet_main.c
View File

@ -730,8 +730,10 @@ static int xgene_enet_open(struct net_device *ndev)
if (pdata->phy_mode == PHY_INTERFACE_MODE_RGMII)
phy_start(pdata->phy_dev);
else
else {
schedule_delayed_work(&pdata->link_work, PHY_POLL_LINK_OFF);
netif_carrier_off(ndev);
}
netif_start_queue(ndev);
@ -761,7 +763,6 @@ static int xgene_enet_close(struct net_device *ndev)
return 0;
}
static void xgene_enet_delete_ring(struct xgene_enet_desc_ring *ring)
{
struct xgene_enet_pdata *pdata;
@ -1447,6 +1448,7 @@ static int xgene_enet_init_hw(struct xgene_enet_pdata *pdata)
pdata->port_ops->cle_bypass(pdata, dst_ring_num, buf_pool->id);
}
pdata->phy_speed = SPEED_UNKNOWN;
pdata->mac_ops->init(pdata);
return ret;

1
drivers/net/ethernet/apm/xgene/xgene_enet_main.h
View File

@ -140,6 +140,7 @@ struct xgene_mac_ops {
void (*rx_enable)(struct xgene_enet_pdata *pdata);
void (*tx_disable)(struct xgene_enet_pdata *pdata);
void (*rx_disable)(struct xgene_enet_pdata *pdata);
void (*set_speed)(struct xgene_enet_pdata *pdata);
void (*set_mac_addr)(struct xgene_enet_pdata *pdata);
void (*set_mss)(struct xgene_enet_pdata *pdata);
void (*link_state)(struct work_struct *work);

135
drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c
View File

@ -93,6 +93,11 @@ static u32 xgene_enet_rd_diag_csr(struct xgene_enet_pdata *p, u32 offset)
return ioread32(p->eth_diag_csr_addr + offset);
}
static u32 xgene_enet_rd_mcx_csr(struct xgene_enet_pdata *p, u32 offset)
{
return ioread32(p->mcx_mac_csr_addr + offset);
}
static u32 xgene_enet_rd_indirect(struct xgene_indirect_ctl *ctl, u32 rd_addr)
{
u32 rd_data;
@ -230,21 +235,105 @@ static u32 xgene_enet_link_status(struct xgene_enet_pdata *p)
data = xgene_mii_phy_read(p, INT_PHY_ADDR,
SGMII_BASE_PAGE_ABILITY_ADDR >> 2);
if (LINK_SPEED(data) == PHY_SPEED_1000)
p->phy_speed = SPEED_1000;
else if (LINK_SPEED(data) == PHY_SPEED_100)
p->phy_speed = SPEED_100;
else
p->phy_speed = SPEED_10;
return data & LINK_UP;
}
static void xgene_sgmac_init(struct xgene_enet_pdata *p)
static void xgene_sgmii_configure(struct xgene_enet_pdata *p)
{
xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2,
0x8000);
xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_CONTROL_ADDR >> 2, 0x9000);
xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 0);
}
static void xgene_sgmii_tbi_control_reset(struct xgene_enet_pdata *p)
{
xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2,
0x8000);
xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 0);
}
static void xgene_sgmii_reset(struct xgene_enet_pdata *p)
{
u32 value;
if (p->phy_speed == SPEED_UNKNOWN)
return;
value = xgene_mii_phy_read(p, INT_PHY_ADDR,
SGMII_BASE_PAGE_ABILITY_ADDR >> 2);
if (!(value & LINK_UP))
xgene_sgmii_tbi_control_reset(p);
}
static void xgene_sgmac_set_speed(struct xgene_enet_pdata *p)
{
u32 icm0_addr, icm2_addr, debug_addr;
u32 icm0, icm2, intf_ctl;
u32 mc2, value;
xgene_sgmii_reset(p);
if (p->enet_id == XGENE_ENET1) {
icm0_addr = ICM_CONFIG0_REG_0_ADDR + p->port_id * OFFSET_8;
icm2_addr = ICM_CONFIG2_REG_0_ADDR + p->port_id * OFFSET_4;
debug_addr = DEBUG_REG_ADDR;
} else {
icm0_addr = XG_MCX_ICM_CONFIG0_REG_0_ADDR;
icm2_addr = XG_MCX_ICM_CONFIG2_REG_0_ADDR;
debug_addr = XG_DEBUG_REG_ADDR;
}
icm0 = xgene_enet_rd_mcx_csr(p, icm0_addr);
icm2 = xgene_enet_rd_mcx_csr(p, icm2_addr);
mc2 = xgene_enet_rd_mac(p, MAC_CONFIG_2_ADDR);
intf_ctl = xgene_enet_rd_mac(p, INTERFACE_CONTROL_ADDR);
switch (p->phy_speed) {
case SPEED_10:
ENET_INTERFACE_MODE2_SET(&mc2, 1);
intf_ctl &= ~(ENET_LHD_MODE | ENET_GHD_MODE);
CFG_MACMODE_SET(&icm0, 0);
CFG_WAITASYNCRD_SET(&icm2, 500);
break;
case SPEED_100:
ENET_INTERFACE_MODE2_SET(&mc2, 1);
intf_ctl &= ~ENET_GHD_MODE;
intf_ctl |= ENET_LHD_MODE;
CFG_MACMODE_SET(&icm0, 1);
CFG_WAITASYNCRD_SET(&icm2, 80);
break;
default:
ENET_INTERFACE_MODE2_SET(&mc2, 2);
intf_ctl &= ~ENET_LHD_MODE;
intf_ctl |= ENET_GHD_MODE;
CFG_MACMODE_SET(&icm0, 2);
CFG_WAITASYNCRD_SET(&icm2, 16);
value = xgene_enet_rd_csr(p, debug_addr);
value |= CFG_BYPASS_UNISEC_TX | CFG_BYPASS_UNISEC_RX;
xgene_enet_wr_csr(p, debug_addr, value);
break;
}
mc2 |= FULL_DUPLEX2 | PAD_CRC;
xgene_enet_wr_mac(p, MAC_CONFIG_2_ADDR, mc2);
xgene_enet_wr_mac(p, INTERFACE_CONTROL_ADDR, intf_ctl);
xgene_enet_wr_mcx_csr(p, icm0_addr, icm0);
xgene_enet_wr_mcx_csr(p, icm2_addr, icm2);
}
static void xgene_sgmii_enable_autoneg(struct xgene_enet_pdata *p)
{
u32 data, loop = 10;
u32 offset = p->port_id * 4;
u32 enet_spare_cfg_reg, rsif_config_reg;
u32 cfg_bypass_reg, rx_dv_gate_reg;
xgene_sgmac_reset(p);
/* Enable auto-negotiation */
xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_CONTROL_ADDR >> 2, 0x1000);
xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 0);
xgene_sgmii_configure(p);
while (loop--) {
data = xgene_mii_phy_read(p, INT_PHY_ADDR,
@ -255,17 +344,25 @@ static void xgene_sgmac_init(struct xgene_enet_pdata *p)
}
if (!(data & AUTO_NEG_COMPLETE) || !(data & LINK_STATUS))
netdev_err(p->ndev, "Auto-negotiation failed\n");
}
data = xgene_enet_rd_mac(p, MAC_CONFIG_2_ADDR);
ENET_INTERFACE_MODE2_SET(&data, 2);
xgene_enet_wr_mac(p, MAC_CONFIG_2_ADDR, data | FULL_DUPLEX2);
xgene_enet_wr_mac(p, INTERFACE_CONTROL_ADDR, ENET_GHD_MODE);
static void xgene_sgmac_init(struct xgene_enet_pdata *p)
{
u32 enet_spare_cfg_reg, rsif_config_reg;
u32 cfg_bypass_reg, rx_dv_gate_reg;
u32 data, offset;
xgene_sgmac_reset(p);
xgene_sgmii_enable_autoneg(p);
xgene_sgmac_set_speed(p);
xgene_sgmac_set_mac_addr(p);
if (p->enet_id == XGENE_ENET1) {
enet_spare_cfg_reg = ENET_SPARE_CFG_REG_ADDR;
rsif_config_reg = RSIF_CONFIG_REG_ADDR;
cfg_bypass_reg = CFG_BYPASS_ADDR;
rx_dv_gate_reg = SG_RX_DV_GATE_REG_0_ADDR;
offset = p->port_id * OFFSET_4;
rx_dv_gate_reg = SG_RX_DV_GATE_REG_0_ADDR + offset;
} else {
enet_spare_cfg_reg = XG_ENET_SPARE_CFG_REG_ADDR;
rsif_config_reg = XG_RSIF_CONFIG_REG_ADDR;
@ -277,8 +374,6 @@ static void xgene_sgmac_init(struct xgene_enet_pdata *p)
data |= MPA_IDLE_WITH_QMI_EMPTY;
xgene_enet_wr_csr(p, enet_spare_cfg_reg, data);
xgene_sgmac_set_mac_addr(p);
/* Adjust MDC clock frequency */
data = xgene_enet_rd_mac(p, MII_MGMT_CONFIG_ADDR);
MGMT_CLOCK_SEL_SET(&data, 7);
@ -292,7 +387,7 @@ static void xgene_sgmac_init(struct xgene_enet_pdata *p)
/* Bypass traffic gating */
xgene_enet_wr_csr(p, XG_ENET_SPARE_CFG_REG_1_ADDR, 0x84);
xgene_enet_wr_csr(p, cfg_bypass_reg, RESUME_TX);
xgene_enet_wr_mcx_csr(p, rx_dv_gate_reg + offset, RESUME_RX0);
xgene_enet_wr_mcx_csr(p, rx_dv_gate_reg, RESUME_RX0);
}
static void xgene_sgmac_rxtx(struct xgene_enet_pdata *p, u32 bits, bool set)
@ -386,10 +481,11 @@ static void xgene_enet_link_state(struct work_struct *work)
if (link) {
if (!netif_carrier_ok(ndev)) {
netif_carrier_on(ndev);
xgene_sgmac_init(p);
xgene_sgmac_set_speed(p);
xgene_sgmac_rx_enable(p);
xgene_sgmac_tx_enable(p);
netdev_info(ndev, "Link is Up - 1Gbps\n");
netdev_info(ndev, "Link is Up - %dMbps\n",
p->phy_speed);
}
poll_interval = PHY_POLL_LINK_ON;
} else {
@ -412,6 +508,7 @@ const struct xgene_mac_ops xgene_sgmac_ops = {
.tx_enable = xgene_sgmac_tx_enable,
.rx_disable = xgene_sgmac_rx_disable,
.tx_disable = xgene_sgmac_tx_disable,
.set_speed = xgene_sgmac_set_speed,
.set_mac_addr = xgene_sgmac_set_mac_addr,
.link_state = xgene_enet_link_state
};

7
drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.h
View File

@ -24,6 +24,7 @@
#define PHY_ADDR(src) (((src)<<8) & GENMASK(12, 8))
#define REG_ADDR(src) ((src) & GENMASK(4, 0))
#define PHY_CONTROL(src) ((src) & GENMASK(15, 0))
#define LINK_SPEED(src) (((src) & GENMASK(11, 10)) >> 10)
#define INT_PHY_ADDR 0x1e
#define SGMII_TBI_CONTROL_ADDR 0x44
#define SGMII_CONTROL_ADDR 0x00
@ -35,6 +36,12 @@
#define MPA_IDLE_WITH_QMI_EMPTY BIT(12)
#define SG_RX_DV_GATE_REG_0_ADDR 0x05fc
enum xgene_phy_speed {
PHY_SPEED_10,
PHY_SPEED_100,
PHY_SPEED_1000
};
extern const struct xgene_mac_ops xgene_sgmac_ops;
extern const struct xgene_port_ops xgene_sgport_ops;

3
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h
View File

@ -65,9 +65,12 @@
#define XG_CFG_LINK_AGGR_RESUME_0_ADDR 0x0214
#define XG_LINK_STATUS_ADDR 0x0228
#define XG_TSIF_MSS_REG0_ADDR 0x02a4
#define XG_DEBUG_REG_ADDR 0x0400
#define XG_ENET_SPARE_CFG_REG_ADDR 0x040c
#define XG_ENET_SPARE_CFG_REG_1_ADDR 0x0410
#define XGENET_RX_DV_GATE_REG_0_ADDR 0x0804
#define XG_MCX_ICM_CONFIG0_REG_0_ADDR 0x00e0
#define XG_MCX_ICM_CONFIG2_REG_0_ADDR 0x00e8
extern const struct xgene_mac_ops xgene_xgmac_ops;
extern const struct xgene_port_ops xgene_xgport_ops;