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amd-xgbe: Simplify mailbox interface rate change code

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Simplify and centralize the mailbox command rate change interface by
having a single function perform the writes to the mailbox registers
to issue the request.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lendacky, Thomas 2017-06-28 13:41:32 -05:00 committed by David S. Miller
parent e3ef6983cc
commit 549b32af9f
1 changed files with 29 additions and 126 deletions
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155
drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
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@ -1694,19 +1694,25 @@ static void xgbe_phy_set_redrv_mode(struct xgbe_prv_data *pdata)
xgbe_phy_put_comm_ownership(pdata); xgbe_phy_put_comm_ownership(pdata);
} }
static void xgbe_phy_start_ratechange(struct xgbe_prv_data *pdata) static void xgbe_phy_perform_ratechange(struct xgbe_prv_data *pdata,
unsigned int cmd, unsigned int sub_cmd)
{ {
if (!XP_IOREAD_BITS(pdata, XP_DRIVER_INT_RO, STATUS)) unsigned int s0 = 0;
return; unsigned int wait;
/* Log if a previous command did not complete */ /* Log if a previous command did not complete */
netif_dbg(pdata, link, pdata->netdev, if (XP_IOREAD_BITS(pdata, XP_DRIVER_INT_RO, STATUS))
"firmware mailbox not ready for command\n"); netif_dbg(pdata, link, pdata->netdev,
} "firmware mailbox not ready for command\n");
static void xgbe_phy_complete_ratechange(struct xgbe_prv_data *pdata) /* Construct the command */
{ XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, cmd);
unsigned int wait; XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, sub_cmd);
/* Issue the command */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
/* Wait for command to complete */ /* Wait for command to complete */
wait = XGBE_RATECHANGE_COUNT; wait = XGBE_RATECHANGE_COUNT;
@ -1723,21 +1729,8 @@ static void xgbe_phy_complete_ratechange(struct xgbe_prv_data *pdata)
static void xgbe_phy_rrc(struct xgbe_prv_data *pdata) static void xgbe_phy_rrc(struct xgbe_prv_data *pdata)
{ {
unsigned int s0;
xgbe_phy_start_ratechange(pdata);
/* Receiver Reset Cycle */ /* Receiver Reset Cycle */
s0 = 0; xgbe_phy_perform_ratechange(pdata, 5, 0);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 5);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 0);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
netif_dbg(pdata, link, pdata->netdev, "receiver reset complete\n"); netif_dbg(pdata, link, pdata->netdev, "receiver reset complete\n");
} }
@ -1746,14 +1739,8 @@ static void xgbe_phy_power_off(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
xgbe_phy_start_ratechange(pdata); /* Power off */
xgbe_phy_perform_ratechange(pdata, 0, 0);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, 0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_UNKNOWN; phy_data->cur_mode = XGBE_MODE_UNKNOWN;
@ -1763,33 +1750,21 @@ static void xgbe_phy_power_off(struct xgbe_prv_data *pdata)
static void xgbe_phy_sfi_mode(struct xgbe_prv_data *pdata) static void xgbe_phy_sfi_mode(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
unsigned int s0;
xgbe_phy_set_redrv_mode(pdata); xgbe_phy_set_redrv_mode(pdata);
xgbe_phy_start_ratechange(pdata);
/* 10G/SFI */ /* 10G/SFI */
s0 = 0;
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 3);
if (phy_data->sfp_cable != XGBE_SFP_CABLE_PASSIVE) { if (phy_data->sfp_cable != XGBE_SFP_CABLE_PASSIVE) {
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 0); xgbe_phy_perform_ratechange(pdata, 3, 0);
} else { } else {
if (phy_data->sfp_cable_len <= 1) if (phy_data->sfp_cable_len <= 1)
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 1); xgbe_phy_perform_ratechange(pdata, 3, 1);
else if (phy_data->sfp_cable_len <= 3) else if (phy_data->sfp_cable_len <= 3)
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 2); xgbe_phy_perform_ratechange(pdata, 3, 2);
else else
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 3); xgbe_phy_perform_ratechange(pdata, 3, 3);
} }
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_SFI; phy_data->cur_mode = XGBE_MODE_SFI;
netif_dbg(pdata, link, pdata->netdev, "10GbE SFI mode set\n"); netif_dbg(pdata, link, pdata->netdev, "10GbE SFI mode set\n");
@ -1798,23 +1773,11 @@ static void xgbe_phy_sfi_mode(struct xgbe_prv_data *pdata)
static void xgbe_phy_x_mode(struct xgbe_prv_data *pdata) static void xgbe_phy_x_mode(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
unsigned int s0;
xgbe_phy_set_redrv_mode(pdata); xgbe_phy_set_redrv_mode(pdata);
xgbe_phy_start_ratechange(pdata);
/* 1G/X */ /* 1G/X */
s0 = 0; xgbe_phy_perform_ratechange(pdata, 1, 3);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 1);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 3);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_X; phy_data->cur_mode = XGBE_MODE_X;
@ -1824,23 +1787,11 @@ static void xgbe_phy_x_mode(struct xgbe_prv_data *pdata)
static void xgbe_phy_sgmii_1000_mode(struct xgbe_prv_data *pdata) static void xgbe_phy_sgmii_1000_mode(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
unsigned int s0;
xgbe_phy_set_redrv_mode(pdata); xgbe_phy_set_redrv_mode(pdata);
xgbe_phy_start_ratechange(pdata);
/* 1G/SGMII */ /* 1G/SGMII */
s0 = 0; xgbe_phy_perform_ratechange(pdata, 1, 2);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 1);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 2);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_SGMII_1000; phy_data->cur_mode = XGBE_MODE_SGMII_1000;
@ -1850,23 +1801,11 @@ static void xgbe_phy_sgmii_1000_mode(struct xgbe_prv_data *pdata)
static void xgbe_phy_sgmii_100_mode(struct xgbe_prv_data *pdata) static void xgbe_phy_sgmii_100_mode(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
unsigned int s0;
xgbe_phy_set_redrv_mode(pdata); xgbe_phy_set_redrv_mode(pdata);
xgbe_phy_start_ratechange(pdata); /* 100M/SGMII */
xgbe_phy_perform_ratechange(pdata, 1, 1);
/* 1G/SGMII */
s0 = 0;
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 1);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 1);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_SGMII_100; phy_data->cur_mode = XGBE_MODE_SGMII_100;
@ -1876,23 +1815,11 @@ static void xgbe_phy_sgmii_100_mode(struct xgbe_prv_data *pdata)
static void xgbe_phy_kr_mode(struct xgbe_prv_data *pdata) static void xgbe_phy_kr_mode(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
unsigned int s0;
xgbe_phy_set_redrv_mode(pdata); xgbe_phy_set_redrv_mode(pdata);
xgbe_phy_start_ratechange(pdata);
/* 10G/KR */ /* 10G/KR */
s0 = 0; xgbe_phy_perform_ratechange(pdata, 4, 0);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 4);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 0);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_KR; phy_data->cur_mode = XGBE_MODE_KR;
@ -1902,23 +1829,11 @@ static void xgbe_phy_kr_mode(struct xgbe_prv_data *pdata)
static void xgbe_phy_kx_2500_mode(struct xgbe_prv_data *pdata) static void xgbe_phy_kx_2500_mode(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
unsigned int s0;
xgbe_phy_set_redrv_mode(pdata); xgbe_phy_set_redrv_mode(pdata);
xgbe_phy_start_ratechange(pdata);
/* 2.5G/KX */ /* 2.5G/KX */
s0 = 0; xgbe_phy_perform_ratechange(pdata, 2, 0);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 2);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 0);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_KX_2500; phy_data->cur_mode = XGBE_MODE_KX_2500;
@ -1928,23 +1843,11 @@ static void xgbe_phy_kx_2500_mode(struct xgbe_prv_data *pdata)
static void xgbe_phy_kx_1000_mode(struct xgbe_prv_data *pdata) static void xgbe_phy_kx_1000_mode(struct xgbe_prv_data *pdata)
{ {
struct xgbe_phy_data *phy_data = pdata->phy_data; struct xgbe_phy_data *phy_data = pdata->phy_data;
unsigned int s0;
xgbe_phy_set_redrv_mode(pdata); xgbe_phy_set_redrv_mode(pdata);
xgbe_phy_start_ratechange(pdata);
/* 1G/KX */ /* 1G/KX */
s0 = 0; xgbe_phy_perform_ratechange(pdata, 1, 3);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, 1);
XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, 3);
/* Call FW to make the change */
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
xgbe_phy_complete_ratechange(pdata);
phy_data->cur_mode = XGBE_MODE_KX_1000; phy_data->cur_mode = XGBE_MODE_KX_1000;