Commit 669d6996 authored by Yaniv Rosner's avatar Yaniv Rosner Committed by David S. Miller
Browse files

bnx2x: Support reading I2C EEPROM SFF8472



Add full support for "ethtool -m" command.
Signed-off-by: default avatarYaniv Rosner <yanivr@broadcom.com>
Signed-off-by: default avatarYuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: default avatarAriel Elior <ariele@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1d6f3cd8
......@@ -1393,10 +1393,9 @@ static int bnx2x_get_module_eeprom(struct net_device *dev,
u8 *data)
{
struct bnx2x *bp = netdev_priv(dev);
int rc = 0, phy_idx;
int rc = -EINVAL, phy_idx;
u8 *user_data = data;
int remaining_len = ee->len, xfer_size;
unsigned int page_off = ee->offset;
unsigned int start_addr = ee->offset, xfer_size = 0;
if (!netif_running(dev)) {
DP(BNX2X_MSG_ETHTOOL | BNX2X_MSG_NVM,
......@@ -1405,21 +1404,52 @@ static int bnx2x_get_module_eeprom(struct net_device *dev,
}
phy_idx = bnx2x_get_cur_phy_idx(bp);
bnx2x_acquire_phy_lock(bp);
while (!rc && remaining_len > 0) {
xfer_size = (remaining_len > SFP_EEPROM_PAGE_SIZE) ?
SFP_EEPROM_PAGE_SIZE : remaining_len;
/* Read A0 section */
if (start_addr < ETH_MODULE_SFF_8079_LEN) {
/* Limit transfer size to the A0 section boundary */
if (start_addr + ee->len > ETH_MODULE_SFF_8079_LEN)
xfer_size = ETH_MODULE_SFF_8079_LEN - start_addr;
else
xfer_size = ee->len;
bnx2x_acquire_phy_lock(bp);
rc = bnx2x_read_sfp_module_eeprom(&bp->link_params.phy[phy_idx],
&bp->link_params,
page_off,
I2C_DEV_ADDR_A0,
start_addr,
xfer_size,
user_data);
remaining_len -= xfer_size;
bnx2x_release_phy_lock(bp);
if (rc) {
DP(BNX2X_MSG_ETHTOOL, "Failed reading A0 section\n");
return -EINVAL;
}
user_data += xfer_size;
page_off += xfer_size;
start_addr += xfer_size;
}
bnx2x_release_phy_lock(bp);
/* Read A2 section */
if ((start_addr >= ETH_MODULE_SFF_8079_LEN) &&
(start_addr < ETH_MODULE_SFF_8472_LEN)) {
xfer_size = ee->len - xfer_size;
/* Limit transfer size to the A2 section boundary */
if (start_addr + xfer_size > ETH_MODULE_SFF_8472_LEN)
xfer_size = ETH_MODULE_SFF_8472_LEN - start_addr;
start_addr -= ETH_MODULE_SFF_8079_LEN;
bnx2x_acquire_phy_lock(bp);
rc = bnx2x_read_sfp_module_eeprom(&bp->link_params.phy[phy_idx],
&bp->link_params,
I2C_DEV_ADDR_A2,
start_addr,
xfer_size,
user_data);
bnx2x_release_phy_lock(bp);
if (rc) {
DP(BNX2X_MSG_ETHTOOL, "Failed reading A2 section\n");
return -EINVAL;
}
}
return rc;
}
......@@ -1427,24 +1457,50 @@ static int bnx2x_get_module_info(struct net_device *dev,
struct ethtool_modinfo *modinfo)
{
struct bnx2x *bp = netdev_priv(dev);
int phy_idx;
int phy_idx, rc;
u8 sff8472_comp, diag_type;
if (!netif_running(dev)) {
DP(BNX2X_MSG_ETHTOOL | BNX2X_MSG_NVM,
DP(BNX2X_MSG_ETHTOOL | BNX2X_MSG_NVM,
"cannot access eeprom when the interface is down\n");
return -EAGAIN;
}
phy_idx = bnx2x_get_cur_phy_idx(bp);
switch (bp->link_params.phy[phy_idx].media_type) {
case ETH_PHY_SFPP_10G_FIBER:
case ETH_PHY_SFP_1G_FIBER:
case ETH_PHY_DA_TWINAX:
bnx2x_acquire_phy_lock(bp);
rc = bnx2x_read_sfp_module_eeprom(&bp->link_params.phy[phy_idx],
&bp->link_params,
I2C_DEV_ADDR_A0,
SFP_EEPROM_SFF_8472_COMP_ADDR,
SFP_EEPROM_SFF_8472_COMP_SIZE,
&sff8472_comp);
bnx2x_release_phy_lock(bp);
if (rc) {
DP(BNX2X_MSG_ETHTOOL, "Failed reading SFF-8472 comp field\n");
return -EINVAL;
}
bnx2x_acquire_phy_lock(bp);
rc = bnx2x_read_sfp_module_eeprom(&bp->link_params.phy[phy_idx],
&bp->link_params,
I2C_DEV_ADDR_A0,
SFP_EEPROM_DIAG_TYPE_ADDR,
SFP_EEPROM_DIAG_TYPE_SIZE,
&diag_type);
bnx2x_release_phy_lock(bp);
if (rc) {
DP(BNX2X_MSG_ETHTOOL, "Failed reading Diag Type field\n");
return -EINVAL;
}
if (!sff8472_comp ||
(diag_type & SFP_EEPROM_DIAG_ADDR_CHANGE_REQ)) {
modinfo->type = ETH_MODULE_SFF_8079;
modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
return 0;
default:
return -EOPNOTSUPP;
} else {
modinfo->type = ETH_MODULE_SFF_8472;
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
}
return 0;
}
static int bnx2x_nvram_write_dword(struct bnx2x *bp, u32 offset, u32 val,
......
......@@ -27,6 +27,10 @@
#include "bnx2x.h"
#include "bnx2x_cmn.h"
typedef int (*read_sfp_module_eeprom_func_p)(struct bnx2x_phy *phy,
struct link_params *params,
u8 dev_addr, u16 addr, u8 byte_cnt,
u8 *o_buf, u8);
/********************************************************/
#define ETH_HLEN 14
/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
......@@ -3128,11 +3132,6 @@ static int bnx2x_bsc_read(struct link_params *params,
int rc = 0;
struct bnx2x *bp = params->bp;
if ((sl_devid != 0xa0) && (sl_devid != 0xa2)) {
DP(NETIF_MSG_LINK, "invalid sl_devid 0x%x\n", sl_devid);
return -EINVAL;
}
if (xfer_cnt > 16) {
DP(NETIF_MSG_LINK, "invalid xfer_cnt %d. Max is 16 bytes\n",
xfer_cnt);
......@@ -7770,7 +7769,8 @@ static void bnx2x_sfp_set_transmitter(struct link_params *params,
static int bnx2x_8726_read_sfp_module_eeprom(struct bnx2x_phy *phy,
struct link_params *params,
u16 addr, u8 byte_cnt, u8 *o_buf)
u8 dev_addr, u16 addr, u8 byte_cnt,
u8 *o_buf, u8 is_init)
{
struct bnx2x *bp = params->bp;
u16 val = 0;
......@@ -7783,7 +7783,7 @@ static int bnx2x_8726_read_sfp_module_eeprom(struct bnx2x_phy *phy,
/* Set the read command byte count */
bnx2x_cl45_write(bp, phy,
MDIO_PMA_DEVAD, MDIO_PMA_REG_SFP_TWO_WIRE_BYTE_CNT,
(byte_cnt | 0xa000));
(byte_cnt | (dev_addr << 8)));
/* Set the read command address */
bnx2x_cl45_write(bp, phy,
......@@ -7857,6 +7857,7 @@ static void bnx2x_warpcore_power_module(struct link_params *params,
}
static int bnx2x_warpcore_read_sfp_module_eeprom(struct bnx2x_phy *phy,
struct link_params *params,
u8 dev_addr,
u16 addr, u8 byte_cnt,
u8 *o_buf, u8 is_init)
{
......@@ -7881,7 +7882,7 @@ static int bnx2x_warpcore_read_sfp_module_eeprom(struct bnx2x_phy *phy,
usleep_range(1000, 2000);
bnx2x_warpcore_power_module(params, 1);
}
rc = bnx2x_bsc_read(params, phy, 0xa0, addr32, 0, byte_cnt,
rc = bnx2x_bsc_read(params, phy, dev_addr, addr32, 0, byte_cnt,
data_array);
} while ((rc != 0) && (++cnt < I2C_WA_RETRY_CNT));
......@@ -7897,7 +7898,8 @@ static int bnx2x_warpcore_read_sfp_module_eeprom(struct bnx2x_phy *phy,
static int bnx2x_8727_read_sfp_module_eeprom(struct bnx2x_phy *phy,
struct link_params *params,
u16 addr, u8 byte_cnt, u8 *o_buf)
u8 dev_addr, u16 addr, u8 byte_cnt,
u8 *o_buf, u8 is_init)
{
struct bnx2x *bp = params->bp;
u16 val, i;
......@@ -7908,6 +7910,15 @@ static int bnx2x_8727_read_sfp_module_eeprom(struct bnx2x_phy *phy,
return -EINVAL;
}
/* Set 2-wire transfer rate of SFP+ module EEPROM
* to 100Khz since some DACs(direct attached cables) do
* not work at 400Khz.
*/
bnx2x_cl45_write(bp, phy,
MDIO_PMA_DEVAD,
MDIO_PMA_REG_8727_TWO_WIRE_SLAVE_ADDR,
((dev_addr << 8) | 1));
/* Need to read from 1.8000 to clear it */
bnx2x_cl45_read(bp, phy,
MDIO_PMA_DEVAD,
......@@ -7980,26 +7991,44 @@ static int bnx2x_8727_read_sfp_module_eeprom(struct bnx2x_phy *phy,
return -EINVAL;
}
int bnx2x_read_sfp_module_eeprom(struct bnx2x_phy *phy,
struct link_params *params, u16 addr,
u8 byte_cnt, u8 *o_buf)
struct link_params *params, u8 dev_addr,
u16 addr, u16 byte_cnt, u8 *o_buf)
{
int rc = -EOPNOTSUPP;
int rc = 0;
struct bnx2x *bp = params->bp;
u8 xfer_size;
u8 *user_data = o_buf;
read_sfp_module_eeprom_func_p read_func;
if ((dev_addr != 0xa0) && (dev_addr != 0xa2)) {
DP(NETIF_MSG_LINK, "invalid dev_addr 0x%x\n", dev_addr);
return -EINVAL;
}
switch (phy->type) {
case PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8726:
rc = bnx2x_8726_read_sfp_module_eeprom(phy, params, addr,
byte_cnt, o_buf);
break;
read_func = bnx2x_8726_read_sfp_module_eeprom;
break;
case PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8727:
case PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8722:
rc = bnx2x_8727_read_sfp_module_eeprom(phy, params, addr,
byte_cnt, o_buf);
break;
read_func = bnx2x_8727_read_sfp_module_eeprom;
break;
case PORT_HW_CFG_XGXS_EXT_PHY_TYPE_DIRECT:
rc = bnx2x_warpcore_read_sfp_module_eeprom(phy, params, addr,
byte_cnt, o_buf, 0);
break;
read_func = bnx2x_warpcore_read_sfp_module_eeprom;
break;
default:
return -EOPNOTSUPP;
}
while (!rc && (byte_cnt > 0)) {
xfer_size = (byte_cnt > SFP_EEPROM_PAGE_SIZE) ?
SFP_EEPROM_PAGE_SIZE : byte_cnt;
rc = read_func(phy, params, dev_addr, addr, xfer_size,
user_data, 0);
byte_cnt -= xfer_size;
user_data += xfer_size;
addr += xfer_size;
}
return rc;
}
......@@ -8016,6 +8045,7 @@ static int bnx2x_get_edc_mode(struct bnx2x_phy *phy,
/* First check for copper cable */
if (bnx2x_read_sfp_module_eeprom(phy,
params,
I2C_DEV_ADDR_A0,
SFP_EEPROM_CON_TYPE_ADDR,
2,
(u8 *)val) != 0) {
......@@ -8033,6 +8063,7 @@ static int bnx2x_get_edc_mode(struct bnx2x_phy *phy,
*/
if (bnx2x_read_sfp_module_eeprom(phy,
params,
I2C_DEV_ADDR_A0,
SFP_EEPROM_FC_TX_TECH_ADDR,
1,
&copper_module_type) != 0) {
......@@ -8117,6 +8148,7 @@ static int bnx2x_get_edc_mode(struct bnx2x_phy *phy,
u8 options[SFP_EEPROM_OPTIONS_SIZE];
if (bnx2x_read_sfp_module_eeprom(phy,
params,
I2C_DEV_ADDR_A0,
SFP_EEPROM_OPTIONS_ADDR,
SFP_EEPROM_OPTIONS_SIZE,
options) != 0) {
......@@ -8183,6 +8215,7 @@ static int bnx2x_verify_sfp_module(struct bnx2x_phy *phy,
/* Format the warning message */
if (bnx2x_read_sfp_module_eeprom(phy,
params,
I2C_DEV_ADDR_A0,
SFP_EEPROM_VENDOR_NAME_ADDR,
SFP_EEPROM_VENDOR_NAME_SIZE,
(u8 *)vendor_name))
......@@ -8191,6 +8224,7 @@ static int bnx2x_verify_sfp_module(struct bnx2x_phy *phy,
vendor_name[SFP_EEPROM_VENDOR_NAME_SIZE] = '\0';
if (bnx2x_read_sfp_module_eeprom(phy,
params,
I2C_DEV_ADDR_A0,
SFP_EEPROM_PART_NO_ADDR,
SFP_EEPROM_PART_NO_SIZE,
(u8 *)vendor_pn))
......@@ -8221,12 +8255,13 @@ static int bnx2x_wait_for_sfp_module_initialized(struct bnx2x_phy *phy,
for (timeout = 0; timeout < 60; timeout++) {
if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_DIRECT)
rc = bnx2x_warpcore_read_sfp_module_eeprom(phy,
params, 1,
1, &val, 1);
rc = bnx2x_warpcore_read_sfp_module_eeprom(
phy, params, I2C_DEV_ADDR_A0, 1, 1, &val,
1);
else
rc = bnx2x_read_sfp_module_eeprom(phy, params, 1, 1,
&val);
rc = bnx2x_read_sfp_module_eeprom(phy, params,
I2C_DEV_ADDR_A0,
1, 1, &val);
if (rc == 0) {
DP(NETIF_MSG_LINK,
"SFP+ module initialization took %d ms\n",
......@@ -8235,7 +8270,8 @@ static int bnx2x_wait_for_sfp_module_initialized(struct bnx2x_phy *phy,
}
usleep_range(5000, 10000);
}
rc = bnx2x_read_sfp_module_eeprom(phy, params, 1, 1, &val);
rc = bnx2x_read_sfp_module_eeprom(phy, params, I2C_DEV_ADDR_A0,
1, 1, &val);
return rc;
}
......@@ -8392,15 +8428,6 @@ static void bnx2x_8727_specific_func(struct bnx2x_phy *phy,
bnx2x_cl45_write(bp, phy,
MDIO_PMA_DEVAD, MDIO_PMA_REG_8727_PCS_OPT_CTRL,
val);
/* Set 2-wire transfer rate of SFP+ module EEPROM
* to 100Khz since some DACs(direct attached cables) do
* not work at 400Khz.
*/
bnx2x_cl45_write(bp, phy,
MDIO_PMA_DEVAD,
MDIO_PMA_REG_8727_TWO_WIRE_SLAVE_ADDR,
0xa001);
break;
default:
DP(NETIF_MSG_LINK, "Function 0x%x not supported by 8727\n",
......
......@@ -41,6 +41,9 @@
#define SPEED_AUTO_NEG 0
#define SPEED_20000 20000
#define I2C_DEV_ADDR_A0 0xa0
#define I2C_DEV_ADDR_A2 0xa2
#define SFP_EEPROM_PAGE_SIZE 16
#define SFP_EEPROM_VENDOR_NAME_ADDR 0x14
#define SFP_EEPROM_VENDOR_NAME_SIZE 16
......@@ -54,6 +57,15 @@
#define SFP_EEPROM_SERIAL_SIZE 16
#define SFP_EEPROM_DATE_ADDR 0x54 /* ASCII YYMMDD */
#define SFP_EEPROM_DATE_SIZE 6
#define SFP_EEPROM_DIAG_TYPE_ADDR 0x5c
#define SFP_EEPROM_DIAG_TYPE_SIZE 1
#define SFP_EEPROM_DIAG_ADDR_CHANGE_REQ (1<<2)
#define SFP_EEPROM_SFF_8472_COMP_ADDR 0x5e
#define SFP_EEPROM_SFF_8472_COMP_SIZE 1
#define SFP_EEPROM_A2_CHECKSUM_RANGE 0x5e
#define SFP_EEPROM_A2_CC_DMI_ADDR 0x5f
#define PWR_FLT_ERR_MSG_LEN 250
#define XGXS_EXT_PHY_TYPE(ext_phy_config) \
......@@ -420,8 +432,8 @@ void bnx2x_sfx7101_sp_sw_reset(struct bnx2x *bp, struct bnx2x_phy *phy);
/* Read "byte_cnt" bytes from address "addr" from the SFP+ EEPROM */
int bnx2x_read_sfp_module_eeprom(struct bnx2x_phy *phy,
struct link_params *params, u16 addr,
u8 byte_cnt, u8 *o_buf);
struct link_params *params, u8 dev_addr,
u16 addr, u16 byte_cnt, u8 *o_buf);
void bnx2x_hw_reset_phy(struct link_params *params);
......
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