diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/modules/builds/x86-64-accton-as6812-32x-sfp.c b/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/modules/builds/x86-64-accton-as6812-32x-sfp.c index 023e949b..362d87db 100644 --- a/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/modules/builds/x86-64-accton-as6812-32x-sfp.c +++ b/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/modules/builds/x86-64-accton-as6812-32x-sfp.c @@ -1,8 +1,7 @@ /* - * An hwmon driver for accton as6812_32x sfp + * SFP driver for accton as6812_32x sfp * - * Copyright (C) 2015 Accton Technology Corporation. - * Brandon Chuang + * Copyright (C) Brandon Chuang * * Based on ad7414.c * Copyright 2006 Stefan Roese , DENX Software Engineering @@ -14,7 +13,7 @@ * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License @@ -31,342 +30,1503 @@ #include #include #include +#include -#define BIT_INDEX(i) (1ULL << (i)) +#define DRIVER_NAME "as6812_32x_sfp" -/* Addresses scanned +#define DEBUG_MODE 0 + +#if (DEBUG_MODE == 1) + #define DEBUG_PRINT(fmt, args...) \ + printk (KERN_INFO "%s:%s[%d]: " fmt "\r\n", __FILE__, __FUNCTION__, __LINE__, ##args) +#else + #define DEBUG_PRINT(fmt, args...) +#endif + +#define NUM_OF_SFP_PORT 32 +#define EEPROM_NAME "sfp_eeprom" +#define EEPROM_SIZE 256 /* 256 byte eeprom */ +#define BIT_INDEX(i) (1ULL << (i)) +#define USE_I2C_BLOCK_READ 1 /* Platform dependent */ +#define I2C_RW_RETRY_COUNT 10 +#define I2C_RW_RETRY_INTERVAL 60 /* ms */ + +#define SFP_EEPROM_A0_I2C_ADDR (0xA0 >> 1) + +#define SFF8024_PHYSICAL_DEVICE_ID_ADDR 0x0 +#define SFF8024_DEVICE_ID_SFP 0x3 +#define SFF8024_DEVICE_ID_QSFP 0xC +#define SFF8024_DEVICE_ID_QSFP_PLUS 0xD +#define SFF8024_DEVICE_ID_QSFP28 0x11 + +#define SFF8436_RX_LOS_ADDR 3 +#define SFF8436_TX_FAULT_ADDR 4 +#define SFF8436_TX_DISABLE_ADDR 86 + +#define MULTIPAGE_SUPPORT 1 + +#if (MULTIPAGE_SUPPORT == 1) +/* fundamental unit of addressing for SFF_8472/SFF_8436 */ +#define SFF_8436_PAGE_SIZE 128 +/* + * The current 8436 (QSFP) spec provides for only 4 supported + * pages (pages 0-3). + * This driver is prepared to support more, but needs a register in the + * EEPROM to indicate how many pages are supported before it is safe + * to implement more pages in the driver. */ -static const unsigned short normal_i2c[] = { 0x50, I2C_CLIENT_END }; - -/* Each client has this additional data +#define SFF_8436_SPECED_PAGES 4 +#define SFF_8436_EEPROM_SIZE ((1 + SFF_8436_SPECED_PAGES) * SFF_8436_PAGE_SIZE) +#define SFF_8436_EEPROM_UNPAGED_SIZE (2 * SFF_8436_PAGE_SIZE) +/* + * The current 8472 (SFP) spec provides for only 3 supported + * pages (pages 0-2). + * This driver is prepared to support more, but needs a register in the + * EEPROM to indicate how many pages are supported before it is safe + * to implement more pages in the driver. */ -struct as6812_32x_sfp_data { - struct device *hwmon_dev; - struct mutex update_lock; - char valid; /* !=0 if registers are valid */ - unsigned long last_updated; /* In jiffies */ - int port; /* Front port index */ - char eeprom[256]; /* eeprom data */ - u64 is_present; /* present status */ +#define SFF_8472_SPECED_PAGES 3 +#define SFF_8472_EEPROM_SIZE ((3 + SFF_8472_SPECED_PAGES) * SFF_8436_PAGE_SIZE) +#define SFF_8472_EEPROM_UNPAGED_SIZE (4 * SFF_8436_PAGE_SIZE) + +/* a few constants to find our way around the EEPROM */ +#define SFF_8436_PAGE_SELECT_REG 0x7F +#define SFF_8436_PAGEABLE_REG 0x02 +#define SFF_8436_NOT_PAGEABLE (1<<2) +#define SFF_8472_PAGEABLE_REG 0x40 +#define SFF_8472_PAGEABLE (1<<4) + +/* + * This parameter is to help this driver avoid blocking other drivers out + * of I2C for potentially troublesome amounts of time. With a 100 kHz I2C + * clock, one 256 byte read takes about 1/43 second which is excessive; + * but the 1/170 second it takes at 400 kHz may be quite reasonable; and + * at 1 MHz (Fm+) a 1/430 second delay could easily be invisible. + * + * This value is forced to be a power of two so that writes align on pages. + */ +static unsigned io_limit = SFF_8436_PAGE_SIZE; + +/* + * specs often allow 5 msec for a page write, sometimes 20 msec; + * it's important to recover from write timeouts. + */ +static unsigned write_timeout = 25; + +typedef enum qsfp_opcode { + QSFP_READ_OP = 0, + QSFP_WRITE_OP = 1 +} qsfp_opcode_e; +#endif + +static ssize_t show_port_number(struct device *dev, struct device_attribute *da, char *buf); +static ssize_t show_present(struct device *dev, struct device_attribute *da, char *buf); +static ssize_t qsfp_show_tx_rx_status(struct device *dev, struct device_attribute *da, char *buf); +static ssize_t qsfp_set_tx_disable(struct device *dev, struct device_attribute *da, const char *buf, size_t count);; +static ssize_t sfp_eeprom_read(struct i2c_client *, u8, u8 *,int); +static ssize_t sfp_eeprom_write(struct i2c_client *, u8 , const char *,int); +extern int as6812_32x_i2c_cpld_read (unsigned short cpld_addr, u8 reg); + +enum sfp_sysfs_attributes { + PRESENT, + PRESENT_ALL, + PORT_NUMBER, + PORT_TYPE, + DDM_IMPLEMENTED, + TX_FAULT, + TX_FAULT1, + TX_FAULT2, + TX_FAULT3, + TX_FAULT4, + TX_DISABLE, + TX_DISABLE1, + TX_DISABLE2, + TX_DISABLE3, + TX_DISABLE4, + RX_LOS, + RX_LOS1, + RX_LOS2, + RX_LOS3, + RX_LOS4, + RX_LOS_ALL }; -static struct as6812_32x_sfp_data *as6812_32x_sfp_update_device(struct device *dev, int update_eeprom); -static ssize_t show_present(struct device *dev, struct device_attribute *da,char *buf); -static ssize_t show_eeprom(struct device *dev, struct device_attribute *da, char *buf); -static ssize_t show_port_number(struct device *dev, struct device_attribute *da, - char *buf); -static int as6812_32x_sfp_read_byte(struct i2c_client *client, u8 command, u8 *data); -extern int as6812_32x_i2c_cpld_read(unsigned short cpld_addr, u8 reg); -extern int as6812_32x_i2c_cpld_write(unsigned short cpld_addr, u8 reg, u8 value); -//extern int accton_i2c_cpld_mux_get_index(int adap_index); +/* SFP/QSFP common attributes for sysfs */ +static SENSOR_DEVICE_ATTR(sfp_port_number, S_IRUGO, show_port_number, NULL, PORT_NUMBER); +static SENSOR_DEVICE_ATTR(sfp_is_present, S_IRUGO, show_present, NULL, PRESENT); +static SENSOR_DEVICE_ATTR(sfp_is_present_all, S_IRUGO, show_present, NULL, PRESENT_ALL); +static SENSOR_DEVICE_ATTR(sfp_tx_disable, S_IWUSR | S_IRUGO, qsfp_show_tx_rx_status, qsfp_set_tx_disable, TX_DISABLE); +static SENSOR_DEVICE_ATTR(sfp_tx_fault, S_IRUGO, qsfp_show_tx_rx_status, NULL, TX_FAULT); -enum as6812_32x_sfp_sysfs_attributes { - SFP_IS_PRESENT, - SFP_EEPROM, - SFP_PORT_NUMBER, - SFP_IS_PRESENT_ALL -}; - -/* sysfs attributes for hwmon - */ -static SENSOR_DEVICE_ATTR(sfp_is_present, S_IRUGO, show_present, NULL, SFP_IS_PRESENT); -static SENSOR_DEVICE_ATTR(sfp_is_present_all, S_IRUGO, show_present, NULL, SFP_IS_PRESENT_ALL); -static SENSOR_DEVICE_ATTR(sfp_eeprom, S_IRUGO, show_eeprom, NULL, SFP_EEPROM); -static SENSOR_DEVICE_ATTR(sfp_port_number, S_IRUGO, show_port_number, NULL, SFP_PORT_NUMBER); - -static struct attribute *as6812_32x_sfp_attributes[] = { - &sensor_dev_attr_sfp_is_present.dev_attr.attr, - &sensor_dev_attr_sfp_eeprom.dev_attr.attr, +/* QSFP attributes for sysfs */ +static SENSOR_DEVICE_ATTR(sfp_rx_los, S_IRUGO, qsfp_show_tx_rx_status, NULL, RX_LOS); +static SENSOR_DEVICE_ATTR(sfp_rx_los1, S_IRUGO, qsfp_show_tx_rx_status, NULL, RX_LOS1); +static SENSOR_DEVICE_ATTR(sfp_rx_los2, S_IRUGO, qsfp_show_tx_rx_status, NULL, RX_LOS2); +static SENSOR_DEVICE_ATTR(sfp_rx_los3, S_IRUGO, qsfp_show_tx_rx_status, NULL, RX_LOS3); +static SENSOR_DEVICE_ATTR(sfp_rx_los4, S_IRUGO, qsfp_show_tx_rx_status, NULL, RX_LOS4); +static SENSOR_DEVICE_ATTR(sfp_tx_disable1, S_IWUSR | S_IRUGO, qsfp_show_tx_rx_status, qsfp_set_tx_disable, TX_DISABLE1); +static SENSOR_DEVICE_ATTR(sfp_tx_disable2, S_IWUSR | S_IRUGO, qsfp_show_tx_rx_status, qsfp_set_tx_disable, TX_DISABLE2); +static SENSOR_DEVICE_ATTR(sfp_tx_disable3, S_IWUSR | S_IRUGO, qsfp_show_tx_rx_status, qsfp_set_tx_disable, TX_DISABLE3); +static SENSOR_DEVICE_ATTR(sfp_tx_disable4, S_IWUSR | S_IRUGO, qsfp_show_tx_rx_status, qsfp_set_tx_disable, TX_DISABLE4); +static SENSOR_DEVICE_ATTR(sfp_tx_fault1, S_IRUGO, qsfp_show_tx_rx_status, NULL, TX_FAULT1); +static SENSOR_DEVICE_ATTR(sfp_tx_fault2, S_IRUGO, qsfp_show_tx_rx_status, NULL, TX_FAULT2); +static SENSOR_DEVICE_ATTR(sfp_tx_fault3, S_IRUGO, qsfp_show_tx_rx_status, NULL, TX_FAULT3); +static SENSOR_DEVICE_ATTR(sfp_tx_fault4, S_IRUGO, qsfp_show_tx_rx_status, NULL, TX_FAULT4); +static struct attribute *qsfp_attributes[] = { &sensor_dev_attr_sfp_port_number.dev_attr.attr, + &sensor_dev_attr_sfp_is_present.dev_attr.attr, &sensor_dev_attr_sfp_is_present_all.dev_attr.attr, + &sensor_dev_attr_sfp_rx_los.dev_attr.attr, + &sensor_dev_attr_sfp_rx_los1.dev_attr.attr, + &sensor_dev_attr_sfp_rx_los2.dev_attr.attr, + &sensor_dev_attr_sfp_rx_los3.dev_attr.attr, + &sensor_dev_attr_sfp_rx_los4.dev_attr.attr, + &sensor_dev_attr_sfp_tx_disable.dev_attr.attr, + &sensor_dev_attr_sfp_tx_disable1.dev_attr.attr, + &sensor_dev_attr_sfp_tx_disable2.dev_attr.attr, + &sensor_dev_attr_sfp_tx_disable3.dev_attr.attr, + &sensor_dev_attr_sfp_tx_disable4.dev_attr.attr, + &sensor_dev_attr_sfp_tx_fault.dev_attr.attr, + &sensor_dev_attr_sfp_tx_fault1.dev_attr.attr, + &sensor_dev_attr_sfp_tx_fault2.dev_attr.attr, + &sensor_dev_attr_sfp_tx_fault3.dev_attr.attr, + &sensor_dev_attr_sfp_tx_fault4.dev_attr.attr, NULL }; +/* Platform dependent +++ */ +#define CPLD_PORT_TO_FRONT_PORT(port) (port+1) + +enum port_numbers { +as6812_32x_port1, as6812_32x_port2, as6812_32x_port3, as6812_32x_port4, as6812_32x_port5, as6812_32x_port6, as6812_32x_port7, as6812_32x_port8, +as6812_32x_port9, as6812_32x_port10, as6812_32x_port11, as6812_32x_port12, as6812_32x_port13, as6812_32x_port14, as6812_32x_port15, as6812_32x_port16, +as6812_32x_port17, as6812_32x_port18, as6812_32x_port19, as6812_32x_port20, as6812_32x_port21, as6812_32x_port22, as6812_32x_port23, as6812_32x_port24, +as6812_32x_port25, as6812_32x_port26, as6812_32x_port27, as6812_32x_port28, as6812_32x_port29, as6812_32x_port30, as6812_32x_port31, as6812_32x_port32 +}; + +#define I2C_DEV_ID(x) { #x, x} + +static const struct i2c_device_id sfp_device_id[] = { +I2C_DEV_ID(as6812_32x_port1), +I2C_DEV_ID(as6812_32x_port2), +I2C_DEV_ID(as6812_32x_port3), +I2C_DEV_ID(as6812_32x_port4), +I2C_DEV_ID(as6812_32x_port5), +I2C_DEV_ID(as6812_32x_port6), +I2C_DEV_ID(as6812_32x_port7), +I2C_DEV_ID(as6812_32x_port8), +I2C_DEV_ID(as6812_32x_port9), +I2C_DEV_ID(as6812_32x_port10), +I2C_DEV_ID(as6812_32x_port11), +I2C_DEV_ID(as6812_32x_port12), +I2C_DEV_ID(as6812_32x_port13), +I2C_DEV_ID(as6812_32x_port14), +I2C_DEV_ID(as6812_32x_port15), +I2C_DEV_ID(as6812_32x_port16), +I2C_DEV_ID(as6812_32x_port17), +I2C_DEV_ID(as6812_32x_port18), +I2C_DEV_ID(as6812_32x_port19), +I2C_DEV_ID(as6812_32x_port20), +I2C_DEV_ID(as6812_32x_port21), +I2C_DEV_ID(as6812_32x_port22), +I2C_DEV_ID(as6812_32x_port23), +I2C_DEV_ID(as6812_32x_port24), +I2C_DEV_ID(as6812_32x_port25), +I2C_DEV_ID(as6812_32x_port26), +I2C_DEV_ID(as6812_32x_port27), +I2C_DEV_ID(as6812_32x_port28), +I2C_DEV_ID(as6812_32x_port29), +I2C_DEV_ID(as6812_32x_port30), +I2C_DEV_ID(as6812_32x_port31), +I2C_DEV_ID(as6812_32x_port32), +{ /* LIST END */ } +}; +MODULE_DEVICE_TABLE(i2c, sfp_device_id); +/* Platform dependent --- */ + +enum driver_type_e { + DRIVER_TYPE_SFP_MSA, + DRIVER_TYPE_SFP_DDM, + DRIVER_TYPE_QSFP +}; + +/* Each client has this additional data + */ +struct eeprom_data { + char valid; /* !=0 if registers are valid */ + unsigned long last_updated; /* In jiffies */ + struct bin_attribute bin; /* eeprom data */ +}; + +struct qsfp_data { + char valid; /* !=0 if registers are valid */ + unsigned long last_updated; /* In jiffies */ + u8 status[3]; /* bit0:port0, bit1:port1 and so on */ + /* index 0 => tx_fail + 1 => tx_disable + 2 => rx_loss */ + u8 device_id; + struct eeprom_data eeprom; +}; + +struct sfp_port_data { + struct mutex update_lock; + enum driver_type_e driver_type; + int port; /* CPLD port index */ + u64 present; /* present status, bit0:port0, bit1:port1 and so on */ + + struct qsfp_data *qsfp; + + struct i2c_client *client; +#if (MULTIPAGE_SUPPORT == 1) + int use_smbus; + u8 *writebuf; + unsigned write_max; +#endif +}; + +#if (MULTIPAGE_SUPPORT == 1) +static ssize_t sfp_port_read_write(struct sfp_port_data *port_data, + char *buf, loff_t off, size_t len, qsfp_opcode_e opcode); +#endif static ssize_t show_port_number(struct device *dev, struct device_attribute *da, char *buf) { struct i2c_client *client = to_i2c_client(dev); - struct as6812_32x_sfp_data *data = i2c_get_clientdata(client); + struct sfp_port_data *data = i2c_get_clientdata(client); + return sprintf(buf, "%d\n", CPLD_PORT_TO_FRONT_PORT(data->port)); +} +/* Platform dependent +++ */ +static struct sfp_port_data *sfp_update_present(struct i2c_client *client) +{ + struct sfp_port_data *data = i2c_get_clientdata(client); + int i = 0, j = 0; + int status = -1; - return sprintf(buf, "%d\n", data->port+1); + DEBUG_PRINT("Starting sfp present status update"); + mutex_lock(&data->update_lock); + + /* Read present status of port 1~32 */ + data->present = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++) { + status = as6812_32x_i2c_cpld_read(0x62+i*2, 0xA+j); + + if (status < 0) { + DEBUG_PRINT("cpld(0x%x) reg(0x%x) err %d", 0x62+i*2, 0xA+j, status); + goto exit; + } + + DEBUG_PRINT("Present status = 0x%lx", data->present); + data->present |= (u64)status << ((i*16) + (j*8)); + } + } + + DEBUG_PRINT("Present status = 0x%lx", data->present); +exit: + mutex_unlock(&data->update_lock); + return (status < 0) ? ERR_PTR(status) : data; } -/* Error-check the CPLD read results. */ -#define VALIDATED_READ(_buf, _rv, _read_expr, _invert) \ -do { \ - _rv = (_read_expr); \ - if(_rv < 0) { \ - return sprintf(_buf, "READ ERROR\n"); \ - } \ - if(_invert) { \ - _rv = ~_rv; \ - } \ - _rv &= 0xFF; \ -} while(0) +/* Platform dependent --- */ +static int sfp_is_port_present(struct i2c_client *client, int port) +{ + struct sfp_port_data *data = i2c_get_clientdata(client); + + data = sfp_update_present(client); + if (IS_ERR(data)) { + return PTR_ERR(data); + } + + return (data->present & BIT_INDEX(data->port)) ? 0 : 1; /* Platform dependent */ +} + +/* Platform dependent +++ */ static ssize_t show_present(struct device *dev, struct device_attribute *da, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct i2c_client *client = to_i2c_client(dev); - if(attr->index == SFP_IS_PRESENT_ALL) { - int values[4]; - /* - * Report the SFP_PRESENCE status for all ports. - */ - - /* SFP_PRESENT Ports 1-8 */ - VALIDATED_READ(buf, values[0], as6812_32x_i2c_cpld_read(0x62, 0xA), 1); - /* SFP_PRESENT Ports 9-16 */ - VALIDATED_READ(buf, values[1], as6812_32x_i2c_cpld_read(0x62, 0xB), 1); - /* SFP_PRESENT Ports 17-24 */ - VALIDATED_READ(buf, values[2], as6812_32x_i2c_cpld_read(0x64, 0xA), 1); - /* SFP_PRESENT Ports 25-32 */ - VALIDATED_READ(buf, values[3], as6812_32x_i2c_cpld_read(0x64, 0xB), 1); - - /* Return values 1 -> 32 in order */ - return sprintf(buf, "%.2x %.2x %.2x %.2x\n", - values[0], values[1], values[2], values[3]); - } - else { /* SFP_IS_PRESENT */ - u8 val; - struct as6812_32x_sfp_data *data = as6812_32x_sfp_update_device(dev, 0); - - if (!data->valid) { - return -EIO; + if (PRESENT_ALL == attr->index) { + int i; + u8 values[4] = {0}; + struct sfp_port_data *data = sfp_update_present(client); + + if (IS_ERR(data)) { + return PTR_ERR(data); } - val = (data->is_present & BIT_INDEX(data->port)) ? 0 : 1; - return sprintf(buf, "%d", val); + for (i = 0; i < ARRAY_SIZE(values); i++) { + values[i] = ~(u8)(data->present >> (i * 8)); + } + + /* Return values 1 -> 32 in order */ + return sprintf(buf, "%.2x %.2x %.2x %.2x\n", + values[0], values[1], values[2], + values[3]); + } + else { + struct sfp_port_data *data = i2c_get_clientdata(client); + int present = sfp_is_port_present(client, data->port); + + if (IS_ERR_VALUE(present)) { + return present; + } + + /* PRESENT */ + return sprintf(buf, "%d", present); } } +/* Platform dependent --- */ -static ssize_t show_eeprom(struct device *dev, struct device_attribute *da, +static struct sfp_port_data *qsfp_update_tx_rx_status(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct sfp_port_data *data = i2c_get_clientdata(client); + int i, status = -1; + u8 buf = 0; + u8 reg[] = {SFF8436_TX_FAULT_ADDR, SFF8436_TX_DISABLE_ADDR, SFF8436_RX_LOS_ADDR}; + + if (time_before(jiffies, data->qsfp->last_updated + HZ + HZ / 2) && data->qsfp->valid) { + return data; + } + + DEBUG_PRINT("Starting sfp tx rx status update"); + mutex_lock(&data->update_lock); + data->qsfp->valid = 0; + memset(data->qsfp->status, 0, sizeof(data->qsfp->status)); + + /* Notify device to update tx fault/ tx disable/ rx los status */ + for (i = 0; i < ARRAY_SIZE(reg); i++) { + status = sfp_eeprom_read(client, reg[i], &buf, sizeof(buf)); + if (unlikely(status < 0)) { + goto exit; + } + } + msleep(200); + + /* Read actual tx fault/ tx disable/ rx los status */ + for (i = 0; i < ARRAY_SIZE(reg); i++) { + status = sfp_eeprom_read(client, reg[i], &buf, sizeof(buf)); + if (unlikely(status < 0)) { + goto exit; + } + + DEBUG_PRINT("qsfp reg(0x%x) status = (0x%x)", reg[i], data->qsfp->status[i]); + data->qsfp->status[i] = (buf & 0xF); + } + + data->qsfp->valid = 1; + data->qsfp->last_updated = jiffies; + +exit: + mutex_unlock(&data->update_lock); + return (status < 0) ? ERR_PTR(status) : data; +} + +static ssize_t qsfp_show_tx_rx_status(struct device *dev, struct device_attribute *da, char *buf) { - struct as6812_32x_sfp_data *data = as6812_32x_sfp_update_device(dev, 1); + int present; + u8 val = 0; + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct i2c_client *client = to_i2c_client(dev); + struct sfp_port_data *data = i2c_get_clientdata(client); - if (!data->valid) { - return 0; + present = sfp_is_port_present(client, data->port); + if (IS_ERR_VALUE(present)) { + return present; } - if ((data->is_present & BIT_INDEX(data->port)) != 0) { - return 0; + if (present == 0) { + /* port is not present */ + return -ENXIO; } - memcpy(buf, data->eeprom, sizeof(data->eeprom)); + data = qsfp_update_tx_rx_status(dev); + if (IS_ERR(data)) { + return PTR_ERR(data); + } - return sizeof(data->eeprom); + switch (attr->index) { + case TX_FAULT: + val = !!(data->qsfp->status[2] & 0xF); + break; + case TX_FAULT1: + case TX_FAULT2: + case TX_FAULT3: + case TX_FAULT4: + val = !!(data->qsfp->status[2] & BIT_INDEX(attr->index - TX_FAULT1)); + break; + case TX_DISABLE: + val = data->qsfp->status[1] & 0xF; + break; + case TX_DISABLE1: + case TX_DISABLE2: + case TX_DISABLE3: + case TX_DISABLE4: + val = !!(data->qsfp->status[1] & BIT_INDEX(attr->index - TX_DISABLE1)); + break; + case RX_LOS: + val = !!(data->qsfp->status[0] & 0xF); + break; + case RX_LOS1: + case RX_LOS2: + case RX_LOS3: + case RX_LOS4: + val = !!(data->qsfp->status[0] & BIT_INDEX(attr->index - RX_LOS1)); + break; + default: + break; + } + + return sprintf(buf, "%d\n", val); } -static const struct attribute_group as6812_32x_sfp_group = { - .attrs = as6812_32x_sfp_attributes, +static ssize_t qsfp_set_tx_disable(struct device *dev, struct device_attribute *da, + const char *buf, size_t count) +{ + long disable; + int status; + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct i2c_client *client = to_i2c_client(dev); + struct sfp_port_data *data = i2c_get_clientdata(client); + + status = sfp_is_port_present(client, data->port); + if (IS_ERR_VALUE(status)) { + return status; + } + + if (!status) { + /* port is not present */ + return -ENXIO; + } + + status = kstrtol(buf, 10, &disable); + if (status) { + return status; + } + + data = qsfp_update_tx_rx_status(dev); + if (IS_ERR(data)) { + return PTR_ERR(data); + } + + mutex_lock(&data->update_lock); + + if (attr->index == TX_DISABLE) { + if (disable) { + data->qsfp->status[1] |= 0xF; + } + else { + data->qsfp->status[1] &= ~0xF; + } + } + else {/* TX_DISABLE1 ~ TX_DISABLE4*/ + if (disable) { + data->qsfp->status[1] |= (1 << (attr->index - TX_DISABLE1)); + } + else { + data->qsfp->status[1] &= ~(1 << (attr->index - TX_DISABLE1)); + } + } + + DEBUG_PRINT("index = (%d), status = (0x%x)", attr->index, data->qsfp->status[1]); + status = sfp_eeprom_write(data->client, SFF8436_TX_DISABLE_ADDR, &data->qsfp->status[1], sizeof(data->qsfp->status[1])); + if (unlikely(status < 0)) { + count = status; + } + + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t sfp_eeprom_write(struct i2c_client *client, u8 command, const char *data, + int data_len) +{ +#if USE_I2C_BLOCK_READ + int status, retry = I2C_RW_RETRY_COUNT; + + if (data_len > I2C_SMBUS_BLOCK_MAX) { + data_len = I2C_SMBUS_BLOCK_MAX; + } + + while (retry) { + status = i2c_smbus_write_i2c_block_data(client, command, data_len, data); + if (unlikely(status < 0)) { + msleep(I2C_RW_RETRY_INTERVAL); + retry--; + continue; + } + + break; + } + + if (unlikely(status < 0)) { + return status; + } + + return data_len; +#else + int status, retry = I2C_RW_RETRY_COUNT; + + while (retry) { + status = i2c_smbus_write_byte_data(client, command, *data); + if (unlikely(status < 0)) { + msleep(I2C_RW_RETRY_INTERVAL); + retry--; + continue; + } + + break; + } + + if (unlikely(status < 0)) { + return status; + } + + return 1; +#endif + + +} + +#if (MULTIPAGE_SUPPORT == 0) +static ssize_t sfp_port_write(struct sfp_port_data *data, + const char *buf, loff_t off, size_t count) +{ + ssize_t retval = 0; + + if (unlikely(!count)) { + return count; + } + + /* + * Write data to chip, protecting against concurrent updates + * from this host, but not from other I2C masters. + */ + mutex_lock(&data->update_lock); + + while (count) { + ssize_t status; + + status = sfp_eeprom_write(data->client, off, buf, count); + if (status <= 0) { + if (retval == 0) { + retval = status; + } + break; + } + buf += status; + off += status; + count -= status; + retval += status; + } + + mutex_unlock(&data->update_lock); + return retval; +} +#endif + +static ssize_t sfp_bin_write(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + int present; + struct sfp_port_data *data; + DEBUG_PRINT("%s(%d) offset = (%d), count = (%d)", off, count); + data = dev_get_drvdata(container_of(kobj, struct device, kobj)); + + present = sfp_is_port_present(data->client, data->port); + if (IS_ERR_VALUE(present)) { + return present; + } + + if (present == 0) { + /* port is not present */ + return -ENODEV; + } + +#if (MULTIPAGE_SUPPORT == 1) + return sfp_port_read_write(data, buf, off, count, QSFP_WRITE_OP); +#else + return sfp_port_write(data, buf, off, count); +#endif +} + +static ssize_t sfp_eeprom_read(struct i2c_client *client, u8 command, u8 *data, + int data_len) +{ +#if USE_I2C_BLOCK_READ + int status, retry = I2C_RW_RETRY_COUNT; + + if (data_len > I2C_SMBUS_BLOCK_MAX) { + data_len = I2C_SMBUS_BLOCK_MAX; + } + + while (retry) { + status = i2c_smbus_read_i2c_block_data(client, command, data_len, data); + if (unlikely(status < 0)) { + msleep(I2C_RW_RETRY_INTERVAL); + retry--; + continue; + } + + break; + } + + if (unlikely(status < 0)) { + goto abort; + } + if (unlikely(status != data_len)) { + status = -EIO; + goto abort; + } + + //result = data_len; + +abort: + return status; +#else + int status, retry = I2C_RW_RETRY_COUNT; + + while (retry) { + status = i2c_smbus_read_byte_data(client, command); + if (unlikely(status < 0)) { + msleep(I2C_RW_RETRY_INTERVAL); + retry--; + continue; + } + + break; + } + + if (unlikely(status < 0)) { + dev_dbg(&client->dev, "sfp read byte data failed, command(0x%2x), data(0x%2x)\r\n", command, status); + goto abort; + } + + *data = (u8)status; + status = 1; + +abort: + return status; +#endif +} + +#if (MULTIPAGE_SUPPORT == 1) +/*-------------------------------------------------------------------------*/ +/* + * This routine computes the addressing information to be used for + * a given r/w request. + * + * Task is to calculate the client (0 = i2c addr 50, 1 = i2c addr 51), + * the page, and the offset. + * + * Handles both SFP and QSFP. + * For SFP, offset 0-255 are on client[0], >255 is on client[1] + * Offset 256-383 are on the lower half of client[1] + * Pages are accessible on the upper half of client[1]. + * Offset >383 are in 128 byte pages mapped into the upper half + * + * For QSFP, all offsets are on client[0] + * offset 0-127 are on the lower half of client[0] (no paging) + * Pages are accessible on the upper half of client[1]. + * Offset >127 are in 128 byte pages mapped into the upper half + * + * Callers must not read/write beyond the end of a client or a page + * without recomputing the client/page. Hence offset (within page) + * plus length must be less than or equal to 128. (Note that this + * routine does not have access to the length of the call, hence + * cannot do the validity check.) + * + * Offset within Lower Page 00h and Upper Page 00h are not recomputed + */ +static uint8_t sff_8436_translate_offset(struct sfp_port_data *port_data, + loff_t *offset, struct i2c_client **client) +{ + unsigned page = 0; + + *client = port_data->client; + + /* + * if offset is in the range 0-128... + * page doesn't matter (using lower half), return 0. + * offset is already correct (don't add 128 to get to paged area) + */ + if (*offset < SFF_8436_PAGE_SIZE) + return page; + + /* note, page will always be positive since *offset >= 128 */ + page = (*offset >> 7)-1; + /* 0x80 places the offset in the top half, offset is last 7 bits */ + *offset = SFF_8436_PAGE_SIZE + (*offset & 0x7f); + + return page; /* note also returning client and offset */ +} + +static ssize_t sff_8436_eeprom_read(struct sfp_port_data *port_data, + struct i2c_client *client, + char *buf, unsigned offset, size_t count) +{ + struct i2c_msg msg[2]; + u8 msgbuf[2]; + unsigned long timeout, read_time; + int status, i; + + memset(msg, 0, sizeof(msg)); + + switch (port_data->use_smbus) { + case I2C_SMBUS_I2C_BLOCK_DATA: + /*smaller eeproms can work given some SMBus extension calls */ + if (count > I2C_SMBUS_BLOCK_MAX) + count = I2C_SMBUS_BLOCK_MAX; + break; + case I2C_SMBUS_WORD_DATA: + /* Check for odd length transaction */ + count = (count == 1) ? 1 : 2; + break; + case I2C_SMBUS_BYTE_DATA: + count = 1; + break; + default: + /* + * When we have a better choice than SMBus calls, use a + * combined I2C message. Write address; then read up to + * io_limit data bytes. msgbuf is u8 and will cast to our + * needs. + */ + i = 0; + msgbuf[i++] = offset; + + msg[0].addr = client->addr; + msg[0].buf = msgbuf; + msg[0].len = i; + + msg[1].addr = client->addr; + msg[1].flags = I2C_M_RD; + msg[1].buf = buf; + msg[1].len = count; + } + + /* + * Reads fail if the previous write didn't complete yet. We may + * loop a few times until this one succeeds, waiting at least + * long enough for one entire page write to work. + */ + timeout = jiffies + msecs_to_jiffies(write_timeout); + do { + read_time = jiffies; + + switch (port_data->use_smbus) { + case I2C_SMBUS_I2C_BLOCK_DATA: + status = i2c_smbus_read_i2c_block_data(client, offset, + count, buf); + break; + case I2C_SMBUS_WORD_DATA: + status = i2c_smbus_read_word_data(client, offset); + if (status >= 0) { + buf[0] = status & 0xff; + if (count == 2) + buf[1] = status >> 8; + status = count; + } + break; + case I2C_SMBUS_BYTE_DATA: + status = i2c_smbus_read_byte_data(client, offset); + if (status >= 0) { + buf[0] = status; + status = count; + } + break; + default: + status = i2c_transfer(client->adapter, msg, 2); + if (status == 2) + status = count; + } + + dev_dbg(&client->dev, "eeprom read %zu@%d --> %d (%ld)\n", + count, offset, status, jiffies); + + if (status == count) /* happy path */ + return count; + + if (status == -ENXIO) /* no module present */ + return status; + + /* REVISIT: at HZ=100, this is sloooow */ + msleep(1); + } while (time_before(read_time, timeout)); + + return -ETIMEDOUT; +} + +static ssize_t sff_8436_eeprom_write(struct sfp_port_data *port_data, + struct i2c_client *client, + const char *buf, + unsigned offset, size_t count) +{ + struct i2c_msg msg; + ssize_t status; + unsigned long timeout, write_time; + unsigned next_page_start; + int i = 0; + + /* write max is at most a page + * (In this driver, write_max is actually one byte!) + */ + if (count > port_data->write_max) + count = port_data->write_max; + + /* shorten count if necessary to avoid crossing page boundary */ + next_page_start = roundup(offset + 1, SFF_8436_PAGE_SIZE); + if (offset + count > next_page_start) + count = next_page_start - offset; + + switch (port_data->use_smbus) { + case I2C_SMBUS_I2C_BLOCK_DATA: + /*smaller eeproms can work given some SMBus extension calls */ + if (count > I2C_SMBUS_BLOCK_MAX) + count = I2C_SMBUS_BLOCK_MAX; + break; + case I2C_SMBUS_WORD_DATA: + /* Check for odd length transaction */ + count = (count == 1) ? 1 : 2; + break; + case I2C_SMBUS_BYTE_DATA: + count = 1; + break; + default: + /* If we'll use I2C calls for I/O, set up the message */ + msg.addr = client->addr; + msg.flags = 0; + + /* msg.buf is u8 and casts will mask the values */ + msg.buf = port_data->writebuf; + + msg.buf[i++] = offset; + memcpy(&msg.buf[i], buf, count); + msg.len = i + count; + break; + } + + /* + * Reads fail if the previous write didn't complete yet. We may + * loop a few times until this one succeeds, waiting at least + * long enough for one entire page write to work. + */ + timeout = jiffies + msecs_to_jiffies(write_timeout); + do { + write_time = jiffies; + + switch (port_data->use_smbus) { + case I2C_SMBUS_I2C_BLOCK_DATA: + status = i2c_smbus_write_i2c_block_data(client, + offset, count, buf); + if (status == 0) + status = count; + break; + case I2C_SMBUS_WORD_DATA: + if (count == 2) { + status = i2c_smbus_write_word_data(client, + offset, (u16)((buf[0])|(buf[1] << 8))); + } else { + /* count = 1 */ + status = i2c_smbus_write_byte_data(client, + offset, buf[0]); + } + if (status == 0) + status = count; + break; + case I2C_SMBUS_BYTE_DATA: + status = i2c_smbus_write_byte_data(client, offset, + buf[0]); + if (status == 0) + status = count; + break; + default: + status = i2c_transfer(client->adapter, &msg, 1); + if (status == 1) + status = count; + break; + } + + dev_dbg(&client->dev, "eeprom write %zu@%d --> %ld (%lu)\n", + count, offset, (long int) status, jiffies); + + if (status == count) + return count; + + /* REVISIT: at HZ=100, this is sloooow */ + msleep(1); + } while (time_before(write_time, timeout)); + + return -ETIMEDOUT; +} + + +static ssize_t sff_8436_eeprom_update_client(struct sfp_port_data *port_data, + char *buf, loff_t off, + size_t count, qsfp_opcode_e opcode) +{ + struct i2c_client *client; + ssize_t retval = 0; + u8 page = 0; + loff_t phy_offset = off; + int ret = 0; + + page = sff_8436_translate_offset(port_data, &phy_offset, &client); + + dev_dbg(&client->dev, + "sff_8436_eeprom_update_client off %lld page:%d phy_offset:%lld, count:%ld, opcode:%d\n", + off, page, phy_offset, (long int) count, opcode); + if (page > 0) { + ret = sff_8436_eeprom_write(port_data, client, &page, + SFF_8436_PAGE_SELECT_REG, 1); + if (ret < 0) { + dev_dbg(&client->dev, + "Write page register for page %d failed ret:%d!\n", + page, ret); + return ret; + } + } + + while (count) { + ssize_t status; + + if (opcode == QSFP_READ_OP) { + status = sff_8436_eeprom_read(port_data, client, + buf, phy_offset, count); + } else { + status = sff_8436_eeprom_write(port_data, client, + buf, phy_offset, count); + } + if (status <= 0) { + if (retval == 0) + retval = status; + break; + } + buf += status; + phy_offset += status; + count -= status; + retval += status; + } + + + if (page > 0) { + /* return the page register to page 0 (why?) */ + page = 0; + ret = sff_8436_eeprom_write(port_data, client, &page, + SFF_8436_PAGE_SELECT_REG, 1); + if (ret < 0) { + dev_err(&client->dev, + "Restore page register to page %d failed ret:%d!\n", + page, ret); + return ret; + } + } + return retval; +} + + +/* + * Figure out if this access is within the range of supported pages. + * Note this is called on every access because we don't know if the + * module has been replaced since the last call. + * If/when modules support more pages, this is the routine to update + * to validate and allow access to additional pages. + * + * Returns updated len for this access: + * - entire access is legal, original len is returned. + * - access begins legal but is too long, len is truncated to fit. + * - initial offset exceeds supported pages, return -EINVAL + */ +static ssize_t sff_8436_page_legal(struct sfp_port_data *port_data, + loff_t off, size_t len) +{ + struct i2c_client *client = port_data->client; + u8 regval; + int status; + size_t maxlen; + + if (off < 0) return -EINVAL; + if (port_data->driver_type == DRIVER_TYPE_SFP_MSA) { + /* SFP case */ + /* if no pages needed, we're good */ + if ((off + len) <= SFF_8472_EEPROM_UNPAGED_SIZE) return len; + /* if offset exceeds possible pages, we're not good */ + if (off >= SFF_8472_EEPROM_SIZE) return -EINVAL; + /* in between, are pages supported? */ + status = sff_8436_eeprom_read(port_data, client, ®val, + SFF_8472_PAGEABLE_REG, 1); + if (status < 0) return status; /* error out (no module?) */ + if (regval & SFF_8472_PAGEABLE) { + /* Pages supported, trim len to the end of pages */ + maxlen = SFF_8472_EEPROM_SIZE - off; + } else { + /* pages not supported, trim len to unpaged size */ + maxlen = SFF_8472_EEPROM_UNPAGED_SIZE - off; + } + len = (len > maxlen) ? maxlen : len; + dev_dbg(&client->dev, + "page_legal, SFP, off %lld len %ld\n", + off, (long int) len); + } + else if (port_data->driver_type == DRIVER_TYPE_QSFP) { + /* QSFP case */ + /* if no pages needed, we're good */ + if ((off + len) <= SFF_8436_EEPROM_UNPAGED_SIZE) return len; + /* if offset exceeds possible pages, we're not good */ + if (off >= SFF_8436_EEPROM_SIZE) return -EINVAL; + /* in between, are pages supported? */ + status = sff_8436_eeprom_read(port_data, client, ®val, + SFF_8436_PAGEABLE_REG, 1); + if (status < 0) return status; /* error out (no module?) */ + if (regval & SFF_8436_NOT_PAGEABLE) { + /* pages not supported, trim len to unpaged size */ + maxlen = SFF_8436_EEPROM_UNPAGED_SIZE - off; + } else { + /* Pages supported, trim len to the end of pages */ + maxlen = SFF_8436_EEPROM_SIZE - off; + } + len = (len > maxlen) ? maxlen : len; + dev_dbg(&client->dev, + "page_legal, QSFP, off %lld len %ld\n", + off, (long int) len); + } + else { + return -EINVAL; + } + return len; +} + + +static ssize_t sfp_port_read_write(struct sfp_port_data *port_data, + char *buf, loff_t off, size_t len, qsfp_opcode_e opcode) +{ + struct i2c_client *client = port_data->client; + int chunk; + int status = 0; + ssize_t retval; + size_t pending_len = 0, chunk_len = 0; + loff_t chunk_offset = 0, chunk_start_offset = 0; + + if (unlikely(!len)) + return len; + + /* + * Read data from chip, protecting against concurrent updates + * from this host, but not from other I2C masters. + */ + mutex_lock(&port_data->update_lock); + + /* + * Confirm this access fits within the device suppored addr range + */ + len = sff_8436_page_legal(port_data, off, len); + if (len < 0) { + status = len; + goto err; + } + + /* + * For each (128 byte) chunk involved in this request, issue a + * separate call to sff_eeprom_update_client(), to + * ensure that each access recalculates the client/page + * and writes the page register as needed. + * Note that chunk to page mapping is confusing, is different for + * QSFP and SFP, and never needs to be done. Don't try! + */ + pending_len = len; /* amount remaining to transfer */ + retval = 0; /* amount transferred */ + for (chunk = off >> 7; chunk <= (off + len - 1) >> 7; chunk++) { + + /* + * Compute the offset and number of bytes to be read/write + * + * 1. start at offset 0 (within the chunk), and read/write + * the entire chunk + * 2. start at offset 0 (within the chunk) and read/write less + * than entire chunk + * 3. start at an offset not equal to 0 and read/write the rest + * of the chunk + * 4. start at an offset not equal to 0 and read/write less than + * (end of chunk - offset) + */ + chunk_start_offset = chunk * SFF_8436_PAGE_SIZE; + + if (chunk_start_offset < off) { + chunk_offset = off; + if ((off + pending_len) < (chunk_start_offset + + SFF_8436_PAGE_SIZE)) + chunk_len = pending_len; + else + chunk_len = (chunk+1)*SFF_8436_PAGE_SIZE - off;/*SFF_8436_PAGE_SIZE - off;*/ + } else { + chunk_offset = chunk_start_offset; + if (pending_len > SFF_8436_PAGE_SIZE) + chunk_len = SFF_8436_PAGE_SIZE; + else + chunk_len = pending_len; + } + + dev_dbg(&client->dev, + "sff_r/w: off %lld, len %ld, chunk_start_offset %lld, chunk_offset %lld, chunk_len %ld, pending_len %ld\n", + off, (long int) len, chunk_start_offset, chunk_offset, + (long int) chunk_len, (long int) pending_len); + + /* + * note: chunk_offset is from the start of the EEPROM, + * not the start of the chunk + */ + status = sff_8436_eeprom_update_client(port_data, buf, + chunk_offset, chunk_len, opcode); + if (status != chunk_len) { + /* This is another 'no device present' path */ + dev_dbg(&client->dev, + "sff_8436_update_client for chunk %d chunk_offset %lld chunk_len %ld failed %d!\n", + chunk, chunk_offset, (long int) chunk_len, status); + goto err; + } + buf += status; + pending_len -= status; + retval += status; + } + mutex_unlock(&port_data->update_lock); + + return retval; + +err: + mutex_unlock(&port_data->update_lock); + + return status; +} + +#else +static ssize_t sfp_port_read(struct sfp_port_data *data, + char *buf, loff_t off, size_t count) +{ + ssize_t retval = 0; + + if (unlikely(!count)) { + DEBUG_PRINT("Count = 0, return"); + return count; + } + + /* + * Read data from chip, protecting against concurrent updates + * from this host, but not from other I2C masters. + */ + mutex_lock(&data->update_lock); + + while (count) { + ssize_t status; + + status = sfp_eeprom_read(data->client, off, buf, count); + if (status <= 0) { + if (retval == 0) { + retval = status; + } + break; + } + + buf += status; + off += status; + count -= status; + retval += status; + } + + mutex_unlock(&data->update_lock); + return retval; + +} +#endif + +static ssize_t sfp_bin_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + int present; + struct sfp_port_data *data; + DEBUG_PRINT("offset = (%d), count = (%d)", off, count); + data = dev_get_drvdata(container_of(kobj, struct device, kobj)); + present = sfp_is_port_present(data->client, data->port); + if (IS_ERR_VALUE(present)) { + return present; + } + + if (present == 0) { + /* port is not present */ + return -ENODEV; + } + +#if (MULTIPAGE_SUPPORT == 1) + return sfp_port_read_write(data, buf, off, count, QSFP_READ_OP); +#else + return sfp_port_read(data, buf, off, count); +#endif +} + +#if (MULTIPAGE_SUPPORT == 1) +static int sfp_sysfs_eeprom_init(struct kobject *kobj, struct bin_attribute *eeprom, size_t size) +#else +static int sfp_sysfs_eeprom_init(struct kobject *kobj, struct bin_attribute *eeprom) +#endif +{ + int err; + + sysfs_bin_attr_init(eeprom); + eeprom->attr.name = EEPROM_NAME; + eeprom->attr.mode = S_IWUSR | S_IRUGO; + eeprom->read = sfp_bin_read; + eeprom->write = sfp_bin_write; +#if (MULTIPAGE_SUPPORT == 1) + eeprom->size = size; +#else + eeprom->size = EEPROM_SIZE; +#endif + + /* Create eeprom file */ + err = sysfs_create_bin_file(kobj, eeprom); + if (err) { + return err; + } + + return 0; +} + +static int sfp_sysfs_eeprom_cleanup(struct kobject *kobj, struct bin_attribute *eeprom) +{ + sysfs_remove_bin_file(kobj, eeprom); + return 0; +} + + +#if (MULTIPAGE_SUPPORT == 0) +static int sfp_i2c_check_functionality(struct i2c_client *client) +{ +#if USE_I2C_BLOCK_READ + return i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK); +#else + return i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA); +#endif +} +#endif + + +static const struct attribute_group qsfp_group = { + .attrs = qsfp_attributes, }; -static int as6812_32x_sfp_probe(struct i2c_client *client, - const struct i2c_device_id *dev_id) +static int qsfp_probe(struct i2c_client *client, const struct i2c_device_id *dev_id, + struct qsfp_data **data) { - struct as6812_32x_sfp_data *data; int status; + struct qsfp_data *qsfp; - if (!i2c_check_functionality(client->adapter, /*I2C_FUNC_SMBUS_BYTE_DATA | */I2C_FUNC_SMBUS_WORD_DATA)) { +#if (MULTIPAGE_SUPPORT == 0) + if (!sfp_i2c_check_functionality(client)) { status = -EIO; goto exit; } +#endif - data = kzalloc(sizeof(struct as6812_32x_sfp_data), GFP_KERNEL); - if (!data) { + qsfp = kzalloc(sizeof(struct qsfp_data), GFP_KERNEL); + if (!qsfp) { status = -ENOMEM; goto exit; } - mutex_init(&data->update_lock); - data->port = dev_id->driver_data; - i2c_set_clientdata(client, data); - - dev_info(&client->dev, "chip found\n"); - /* Register sysfs hooks */ - status = sysfs_create_group(&client->dev.kobj, &as6812_32x_sfp_group); + status = sysfs_create_group(&client->dev.kobj, &qsfp_group); if (status) { goto exit_free; } - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - status = PTR_ERR(data->hwmon_dev); + /* init eeprom */ +#if (MULTIPAGE_SUPPORT == 1) + status = sfp_sysfs_eeprom_init(&client->dev.kobj, &qsfp->eeprom.bin, SFF_8436_EEPROM_SIZE); +#else + status = sfp_sysfs_eeprom_init(&client->dev.kobj, &qsfp->eeprom.bin); +#endif + if (status) { goto exit_remove; } - dev_info(&client->dev, "%s: sfp '%s'\n", - dev_name(data->hwmon_dev), client->name); + *data = qsfp; + dev_info(&client->dev, "qsfp '%s'\n", client->name); return 0; exit_remove: - sysfs_remove_group(&client->dev.kobj, &as6812_32x_sfp_group); + sysfs_remove_group(&client->dev.kobj, &qsfp_group); exit_free: - kfree(data); + kfree(qsfp); exit: return status; } -static int as6812_32x_sfp_remove(struct i2c_client *client) +/* Platform dependent +++ */ +static int sfp_device_probe(struct i2c_client *client, + const struct i2c_device_id *dev_id) { - struct as6812_32x_sfp_data *data = i2c_get_clientdata(client); + int ret = 0; + struct sfp_port_data *data = NULL; - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, &as6812_32x_sfp_group); + if (client->addr != SFP_EEPROM_A0_I2C_ADDR) { + return -ENODEV; + } + + if (dev_id->driver_data < as6812_32x_port1 || dev_id->driver_data > as6812_32x_port32) { + return -ENXIO; + } + + data = kzalloc(sizeof(struct sfp_port_data), GFP_KERNEL); + if (!data) { + return -ENOMEM; + } + +#if (MULTIPAGE_SUPPORT == 1) + data->use_smbus = 0; + + /* Use I2C operations unless we're stuck with SMBus extensions. */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + if (i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { + data->use_smbus = I2C_SMBUS_I2C_BLOCK_DATA; + } else if (i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_WORD_DATA)) { + data->use_smbus = I2C_SMBUS_WORD_DATA; + } else if (i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_BYTE_DATA)) { + data->use_smbus = I2C_SMBUS_BYTE_DATA; + } else { + ret = -EPFNOSUPPORT; + goto exit_kfree; + } + } + + if (!data->use_smbus || + (i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) || + i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WRITE_WORD_DATA) || + i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) { + /* + * NOTE: AN-2079 + * Finisar recommends that the host implement 1 byte writes + * only since this module only supports 32 byte page boundaries. + * 2 byte writes are acceptable for PE and Vout changes per + * Application Note AN-2071. + */ + unsigned write_max = 1; + + if (write_max > io_limit) + write_max = io_limit; + if (data->use_smbus && write_max > I2C_SMBUS_BLOCK_MAX) + write_max = I2C_SMBUS_BLOCK_MAX; + data->write_max = write_max; + + /* buffer (data + address at the beginning) */ + data->writebuf = kmalloc(write_max + 2, GFP_KERNEL); + if (!data->writebuf) { + ret = -ENOMEM; + goto exit_kfree; + } + } else { + dev_warn(&client->dev, + "cannot write due to controller restrictions."); + } + + if (data->use_smbus == I2C_SMBUS_WORD_DATA || + data->use_smbus == I2C_SMBUS_BYTE_DATA) { + dev_notice(&client->dev, "Falling back to %s reads, " + "performance will suffer\n", data->use_smbus == + I2C_SMBUS_WORD_DATA ? "word" : "byte"); + } +#endif + + i2c_set_clientdata(client, data); + mutex_init(&data->update_lock); + data->port = dev_id->driver_data; + data->client = client; + data->driver_type = DRIVER_TYPE_QSFP; + + ret = qsfp_probe(client, dev_id, &data->qsfp); + if (ret < 0) { + goto exit_kfree_buf; + } + + return ret; + +exit_kfree_buf: +#if (MULTIPAGE_SUPPORT == 1) + if (data->writebuf) kfree(data->writebuf); +#endif + +exit_kfree: kfree(data); + return ret; +} +/* Platform dependent --- */ +static int qsfp_remove(struct i2c_client *client, struct qsfp_data *data) +{ + sfp_sysfs_eeprom_cleanup(&client->dev.kobj, &data->eeprom.bin); + sysfs_remove_group(&client->dev.kobj, &qsfp_group); + kfree(data); return 0; } -enum port_numbers { -as6812_32x_sfp1, as6812_32x_sfp2, as6812_32x_sfp3, as6812_32x_sfp4, -as6812_32x_sfp5, as6812_32x_sfp6, as6812_32x_sfp7, as6812_32x_sfp8, -as6812_32x_sfp9, as6812_32x_sfp10, as6812_32x_sfp11,as6812_32x_sfp12, -as6812_32x_sfp13, as6812_32x_sfp14, as6812_32x_sfp15,as6812_32x_sfp16, -as6812_32x_sfp17, as6812_32x_sfp18, as6812_32x_sfp19,as6812_32x_sfp20, -as6812_32x_sfp21, as6812_32x_sfp22, as6812_32x_sfp23,as6812_32x_sfp24, -as6812_32x_sfp25, as6812_32x_sfp26, as6812_32x_sfp27,as6812_32x_sfp28, -as6812_32x_sfp29, as6812_32x_sfp30, as6812_32x_sfp31,as6812_32x_sfp32 -}; +static int sfp_device_remove(struct i2c_client *client) +{ + int ret = 0; + struct sfp_port_data *data = i2c_get_clientdata(client); +#if (MULTIPAGE_SUPPORT == 1) + kfree(data->writebuf); +#endif -static const struct i2c_device_id as6812_32x_sfp_id[] = { -{ "as6812_32x_sfp1", as6812_32x_sfp1 }, { "as6812_32x_sfp2", as6812_32x_sfp2 }, -{ "as6812_32x_sfp3", as6812_32x_sfp3 }, { "as6812_32x_sfp4", as6812_32x_sfp4 }, -{ "as6812_32x_sfp5", as6812_32x_sfp5 }, { "as6812_32x_sfp6", as6812_32x_sfp6 }, -{ "as6812_32x_sfp7", as6812_32x_sfp7 }, { "as6812_32x_sfp8", as6812_32x_sfp8 }, -{ "as6812_32x_sfp9", as6812_32x_sfp9 }, { "as6812_32x_sfp10", as6812_32x_sfp10 }, -{ "as6812_32x_sfp11", as6812_32x_sfp11 }, { "as6812_32x_sfp12", as6812_32x_sfp12 }, -{ "as6812_32x_sfp13", as6812_32x_sfp13 }, { "as6812_32x_sfp14", as6812_32x_sfp14 }, -{ "as6812_32x_sfp15", as6812_32x_sfp15 }, { "as6812_32x_sfp16", as6812_32x_sfp16 }, -{ "as6812_32x_sfp17", as6812_32x_sfp17 }, { "as6812_32x_sfp18", as6812_32x_sfp18 }, -{ "as6812_32x_sfp19", as6812_32x_sfp19 }, { "as6812_32x_sfp20", as6812_32x_sfp20 }, -{ "as6812_32x_sfp21", as6812_32x_sfp21 }, { "as6812_32x_sfp22", as6812_32x_sfp22 }, -{ "as6812_32x_sfp23", as6812_32x_sfp23 }, { "as6812_32x_sfp24", as6812_32x_sfp24 }, -{ "as6812_32x_sfp25", as6812_32x_sfp25 }, { "as6812_32x_sfp26", as6812_32x_sfp26 }, -{ "as6812_32x_sfp27", as6812_32x_sfp27 }, { "as6812_32x_sfp28", as6812_32x_sfp28 }, -{ "as6812_32x_sfp29", as6812_32x_sfp29 }, { "as6812_32x_sfp30", as6812_32x_sfp30 }, -{ "as6812_32x_sfp31", as6812_32x_sfp31 }, { "as6812_32x_sfp32", as6812_32x_sfp32 }, -{} -}; -MODULE_DEVICE_TABLE(i2c, as6812_32x_sfp_id); + if (data->driver_type == DRIVER_TYPE_QSFP) { + ret = qsfp_remove(client, data->qsfp); + } + kfree(data); + return ret; +} -static struct i2c_driver as6812_32x_sfp_driver = { - .class = I2C_CLASS_HWMON, +/* Addresses scanned + */ +static const unsigned short normal_i2c[] = { I2C_CLIENT_END }; + +static struct i2c_driver sfp_driver = { .driver = { - .name = "as6812_32x_sfp", + .name = DRIVER_NAME, }, - .probe = as6812_32x_sfp_probe, - .remove = as6812_32x_sfp_remove, - .id_table = as6812_32x_sfp_id, + .probe = sfp_device_probe, + .remove = sfp_device_remove, + .id_table = sfp_device_id, .address_list = normal_i2c, }; -#if 0 -static int as6812_32x_sfp_read_byte(struct i2c_client *client, u8 command, u8 *data) +static int __init sfp_init(void) { - int result = i2c_smbus_read_byte_data(client, command); - - if (unlikely(result < 0)) { - dev_dbg(&client->dev, "sfp read byte data failed, command(0x%2x), data(0x%2x)\r\n", command, result); - goto abort; - } - - *data = (u8)result; - result = 0; - -abort: - return result; -} -#endif - -static int as6812_32x_sfp_read_word(struct i2c_client *client, u8 command, u16 *data) -{ - int result = i2c_smbus_read_word_data(client, command); - - if (unlikely(result < 0)) { - dev_dbg(&client->dev, "sfp read byte data failed, command(0x%2x), data(0x%2x)\r\n", command, result); - goto abort; - } - - *data = (u16)result; - result = 0; - -abort: - return result; + return i2c_add_driver(&sfp_driver); } -#define ALWAYS_UPDATE 1 - -static struct as6812_32x_sfp_data *as6812_32x_sfp_update_device(struct device *dev, int update_eeprom) +static void __exit sfp_exit(void) { - struct i2c_client *client = to_i2c_client(dev); - struct as6812_32x_sfp_data *data = i2c_get_clientdata(client); - - mutex_lock(&data->update_lock); - - if (ALWAYS_UPDATE || time_after(jiffies, data->last_updated + HZ + HZ / 2) - || !data->valid) { - int status = -1; - int i = 0, j = 0; - - data->valid = 0; - - /* Read present status of port 1~32 */ - data->is_present = 0; - - for (i = 0; i < 2; i++) { - for (j = 0; j < 2; j++) { - status = as6812_32x_i2c_cpld_read(0x62+i*2, 0xA+j); - - if (status < 0) { - dev_dbg(&client->dev, "cpld(0x%x) reg(0x%x) err %d\n", 0x62+i*2, 0xA+j, status); - goto exit; - } - - data->is_present |= (u64)status << ((i*16) + (j*8)); - } - } - - if (update_eeprom) { - /* Read eeprom data based on port number */ - memset(data->eeprom, 0, sizeof(data->eeprom)); - - /* Check if the port is present */ - if ((data->is_present & BIT_INDEX(data->port)) == 0) { - /* read eeprom */ - u16 eeprom_data; - for (i = 0; i < (sizeof(data->eeprom) / 2); i++) { - status = as6812_32x_sfp_read_word(client, i*2, &eeprom_data); - - if (status < 0) { - dev_dbg(&client->dev, "unable to read eeprom from port(%d)\n", data->port); - goto exit; - } - - data->eeprom[i*2] = eeprom_data & 0xff; - data->eeprom[i*2 + 1] = eeprom_data >> 8; - } - } - } - - data->last_updated = jiffies; - data->valid = 1; - } - -exit: - mutex_unlock(&data->update_lock); - - return data; + i2c_del_driver(&sfp_driver); } -module_i2c_driver(as6812_32x_sfp_driver); - MODULE_AUTHOR("Brandon Chuang "); MODULE_DESCRIPTION("accton as6812_32x_sfp driver"); MODULE_LICENSE("GPL"); + +module_init(sfp_init); +module_exit(sfp_exit); + diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/platform-config/r0/src/python/x86_64_accton_as6812_32x_r0/__init__.py b/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/platform-config/r0/src/python/x86_64_accton_as6812_32x_r0/__init__.py index 66e8f002..43c9b7d8 100644 --- a/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/platform-config/r0/src/python/x86_64_accton_as6812_32x_r0/__init__.py +++ b/packages/platforms/accton/x86-64/x86-64-accton-as6812-32x/platform-config/r0/src/python/x86_64_accton_as6812_32x_r0/__init__.py @@ -25,7 +25,7 @@ class OnlPlatform_x86_64_accton_as6812_32x_r0(OnlPlatformAccton, # initialize QSFP port 1~32 for port in range(1, 33): - self.new_i2c_device('as6812_32x_sfp%d' % port, + self.new_i2c_device('as6812_32x_port%d' % port, 0x50, port+1)