mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
![Duoming Zhou](/assets/img/avatar_default.png)
The timer dev->stat_monitor can schedule the delayed work dev->wq and
the delayed work dev->wq can also arm the dev->stat_monitor timer.
When the device is detaching, the net_device will be deallocated. but
the net_device private data could still be dereferenced in delayed work
or timer handler. As a result, the UAF bugs will happen.
One racy situation is shown below:
(Thread 1) | (Thread 2)
lan78xx_stat_monitor() |
... | lan78xx_disconnect()
lan78xx_defer_kevent() | ...
... | cancel_delayed_work_sync(&dev->wq);
schedule_delayed_work() | ...
(wait some time) | free_netdev(net); //free net_device
lan78xx_delayedwork() |
//use net_device private data |
dev-> //use |
Although we use cancel_delayed_work_sync() to cancel the delayed work
in lan78xx_disconnect(), it could still be scheduled in timer handler
lan78xx_stat_monitor().
Another racy situation is shown below:
(Thread 1) | (Thread 2)
lan78xx_delayedwork |
mod_timer() | lan78xx_disconnect()
| cancel_delayed_work_sync()
(wait some time) | if (timer_pending(&dev->stat_monitor))
| del_timer_sync(&dev->stat_monitor);
lan78xx_stat_monitor() | ...
lan78xx_defer_kevent() | free_netdev(net); //free
//use net_device private data|
dev-> //use |
Although we use del_timer_sync() to delete the timer, the function
timer_pending() returns 0 when the timer is activated. As a result,
the del_timer_sync() will not be executed and the timer could be
re-armed.
In order to mitigate this bug, We use timer_shutdown_sync() to shutdown
the timer and then use cancel_delayed_work_sync() to cancel the delayed
work. As a result, the net_device could be deallocated safely.
What's more, the dev->flags is set to EVENT_DEV_DISCONNECT in
lan78xx_disconnect(). But it could still be set to EVENT_STAT_UPDATE
in lan78xx_stat_monitor(). So this patch put the set_bit() behind
timer_shutdown_sync().
Fixes: 77dfff5bb7
("lan78xx: Fix race condition in disconnect handling")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
5072 lines
119 KiB
C
5072 lines
119 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2015 Microchip Technology
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/crc32.h>
|
|
#include <linux/signal.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/linkmode.h>
|
|
#include <linux/list.h>
|
|
#include <linux/ip.h>
|
|
#include <linux/ipv6.h>
|
|
#include <linux/mdio.h>
|
|
#include <linux/phy.h>
|
|
#include <net/ip6_checksum.h>
|
|
#include <net/vxlan.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irqdomain.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/irqchip/chained_irq.h>
|
|
#include <linux/microchipphy.h>
|
|
#include <linux/phy_fixed.h>
|
|
#include <linux/of_mdio.h>
|
|
#include <linux/of_net.h>
|
|
#include "lan78xx.h"
|
|
|
|
#define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>"
|
|
#define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices"
|
|
#define DRIVER_NAME "lan78xx"
|
|
|
|
#define TX_TIMEOUT_JIFFIES (5 * HZ)
|
|
#define THROTTLE_JIFFIES (HZ / 8)
|
|
#define UNLINK_TIMEOUT_MS 3
|
|
|
|
#define RX_MAX_QUEUE_MEMORY (60 * 1518)
|
|
|
|
#define SS_USB_PKT_SIZE (1024)
|
|
#define HS_USB_PKT_SIZE (512)
|
|
#define FS_USB_PKT_SIZE (64)
|
|
|
|
#define MAX_RX_FIFO_SIZE (12 * 1024)
|
|
#define MAX_TX_FIFO_SIZE (12 * 1024)
|
|
|
|
#define FLOW_THRESHOLD(n) ((((n) + 511) / 512) & 0x7F)
|
|
#define FLOW_CTRL_THRESHOLD(on, off) ((FLOW_THRESHOLD(on) << 0) | \
|
|
(FLOW_THRESHOLD(off) << 8))
|
|
|
|
/* Flow control turned on when Rx FIFO level rises above this level (bytes) */
|
|
#define FLOW_ON_SS 9216
|
|
#define FLOW_ON_HS 8704
|
|
|
|
/* Flow control turned off when Rx FIFO level falls below this level (bytes) */
|
|
#define FLOW_OFF_SS 4096
|
|
#define FLOW_OFF_HS 1024
|
|
|
|
#define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE)
|
|
#define DEFAULT_BULK_IN_DELAY (0x0800)
|
|
#define MAX_SINGLE_PACKET_SIZE (9000)
|
|
#define DEFAULT_TX_CSUM_ENABLE (true)
|
|
#define DEFAULT_RX_CSUM_ENABLE (true)
|
|
#define DEFAULT_TSO_CSUM_ENABLE (true)
|
|
#define DEFAULT_VLAN_FILTER_ENABLE (true)
|
|
#define DEFAULT_VLAN_RX_OFFLOAD (true)
|
|
#define TX_ALIGNMENT (4)
|
|
#define RXW_PADDING 2
|
|
|
|
#define LAN78XX_USB_VENDOR_ID (0x0424)
|
|
#define LAN7800_USB_PRODUCT_ID (0x7800)
|
|
#define LAN7850_USB_PRODUCT_ID (0x7850)
|
|
#define LAN7801_USB_PRODUCT_ID (0x7801)
|
|
#define LAN78XX_EEPROM_MAGIC (0x78A5)
|
|
#define LAN78XX_OTP_MAGIC (0x78F3)
|
|
#define AT29M2AF_USB_VENDOR_ID (0x07C9)
|
|
#define AT29M2AF_USB_PRODUCT_ID (0x0012)
|
|
|
|
#define MII_READ 1
|
|
#define MII_WRITE 0
|
|
|
|
#define EEPROM_INDICATOR (0xA5)
|
|
#define EEPROM_MAC_OFFSET (0x01)
|
|
#define MAX_EEPROM_SIZE 512
|
|
#define OTP_INDICATOR_1 (0xF3)
|
|
#define OTP_INDICATOR_2 (0xF7)
|
|
|
|
#define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \
|
|
WAKE_MCAST | WAKE_BCAST | \
|
|
WAKE_ARP | WAKE_MAGIC)
|
|
|
|
#define TX_URB_NUM 10
|
|
#define TX_SS_URB_NUM TX_URB_NUM
|
|
#define TX_HS_URB_NUM TX_URB_NUM
|
|
#define TX_FS_URB_NUM TX_URB_NUM
|
|
|
|
/* A single URB buffer must be large enough to hold a complete jumbo packet
|
|
*/
|
|
#define TX_SS_URB_SIZE (32 * 1024)
|
|
#define TX_HS_URB_SIZE (16 * 1024)
|
|
#define TX_FS_URB_SIZE (10 * 1024)
|
|
|
|
#define RX_SS_URB_NUM 30
|
|
#define RX_HS_URB_NUM 10
|
|
#define RX_FS_URB_NUM 10
|
|
#define RX_SS_URB_SIZE TX_SS_URB_SIZE
|
|
#define RX_HS_URB_SIZE TX_HS_URB_SIZE
|
|
#define RX_FS_URB_SIZE TX_FS_URB_SIZE
|
|
|
|
#define SS_BURST_CAP_SIZE RX_SS_URB_SIZE
|
|
#define SS_BULK_IN_DELAY 0x2000
|
|
#define HS_BURST_CAP_SIZE RX_HS_URB_SIZE
|
|
#define HS_BULK_IN_DELAY 0x2000
|
|
#define FS_BURST_CAP_SIZE RX_FS_URB_SIZE
|
|
#define FS_BULK_IN_DELAY 0x2000
|
|
|
|
#define TX_CMD_LEN 8
|
|
#define TX_SKB_MIN_LEN (TX_CMD_LEN + ETH_HLEN)
|
|
#define LAN78XX_TSO_SIZE(dev) ((dev)->tx_urb_size - TX_SKB_MIN_LEN)
|
|
|
|
#define RX_CMD_LEN 10
|
|
#define RX_SKB_MIN_LEN (RX_CMD_LEN + ETH_HLEN)
|
|
#define RX_MAX_FRAME_LEN(mtu) ((mtu) + ETH_HLEN + VLAN_HLEN)
|
|
|
|
/* USB related defines */
|
|
#define BULK_IN_PIPE 1
|
|
#define BULK_OUT_PIPE 2
|
|
|
|
/* default autosuspend delay (mSec)*/
|
|
#define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000)
|
|
|
|
/* statistic update interval (mSec) */
|
|
#define STAT_UPDATE_TIMER (1 * 1000)
|
|
|
|
/* time to wait for MAC or FCT to stop (jiffies) */
|
|
#define HW_DISABLE_TIMEOUT (HZ / 10)
|
|
|
|
/* time to wait between polling MAC or FCT state (ms) */
|
|
#define HW_DISABLE_DELAY_MS 1
|
|
|
|
/* defines interrupts from interrupt EP */
|
|
#define MAX_INT_EP (32)
|
|
#define INT_EP_INTEP (31)
|
|
#define INT_EP_OTP_WR_DONE (28)
|
|
#define INT_EP_EEE_TX_LPI_START (26)
|
|
#define INT_EP_EEE_TX_LPI_STOP (25)
|
|
#define INT_EP_EEE_RX_LPI (24)
|
|
#define INT_EP_MAC_RESET_TIMEOUT (23)
|
|
#define INT_EP_RDFO (22)
|
|
#define INT_EP_TXE (21)
|
|
#define INT_EP_USB_STATUS (20)
|
|
#define INT_EP_TX_DIS (19)
|
|
#define INT_EP_RX_DIS (18)
|
|
#define INT_EP_PHY (17)
|
|
#define INT_EP_DP (16)
|
|
#define INT_EP_MAC_ERR (15)
|
|
#define INT_EP_TDFU (14)
|
|
#define INT_EP_TDFO (13)
|
|
#define INT_EP_UTX (12)
|
|
#define INT_EP_GPIO_11 (11)
|
|
#define INT_EP_GPIO_10 (10)
|
|
#define INT_EP_GPIO_9 (9)
|
|
#define INT_EP_GPIO_8 (8)
|
|
#define INT_EP_GPIO_7 (7)
|
|
#define INT_EP_GPIO_6 (6)
|
|
#define INT_EP_GPIO_5 (5)
|
|
#define INT_EP_GPIO_4 (4)
|
|
#define INT_EP_GPIO_3 (3)
|
|
#define INT_EP_GPIO_2 (2)
|
|
#define INT_EP_GPIO_1 (1)
|
|
#define INT_EP_GPIO_0 (0)
|
|
|
|
static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = {
|
|
"RX FCS Errors",
|
|
"RX Alignment Errors",
|
|
"Rx Fragment Errors",
|
|
"RX Jabber Errors",
|
|
"RX Undersize Frame Errors",
|
|
"RX Oversize Frame Errors",
|
|
"RX Dropped Frames",
|
|
"RX Unicast Byte Count",
|
|
"RX Broadcast Byte Count",
|
|
"RX Multicast Byte Count",
|
|
"RX Unicast Frames",
|
|
"RX Broadcast Frames",
|
|
"RX Multicast Frames",
|
|
"RX Pause Frames",
|
|
"RX 64 Byte Frames",
|
|
"RX 65 - 127 Byte Frames",
|
|
"RX 128 - 255 Byte Frames",
|
|
"RX 256 - 511 Bytes Frames",
|
|
"RX 512 - 1023 Byte Frames",
|
|
"RX 1024 - 1518 Byte Frames",
|
|
"RX Greater 1518 Byte Frames",
|
|
"EEE RX LPI Transitions",
|
|
"EEE RX LPI Time",
|
|
"TX FCS Errors",
|
|
"TX Excess Deferral Errors",
|
|
"TX Carrier Errors",
|
|
"TX Bad Byte Count",
|
|
"TX Single Collisions",
|
|
"TX Multiple Collisions",
|
|
"TX Excessive Collision",
|
|
"TX Late Collisions",
|
|
"TX Unicast Byte Count",
|
|
"TX Broadcast Byte Count",
|
|
"TX Multicast Byte Count",
|
|
"TX Unicast Frames",
|
|
"TX Broadcast Frames",
|
|
"TX Multicast Frames",
|
|
"TX Pause Frames",
|
|
"TX 64 Byte Frames",
|
|
"TX 65 - 127 Byte Frames",
|
|
"TX 128 - 255 Byte Frames",
|
|
"TX 256 - 511 Bytes Frames",
|
|
"TX 512 - 1023 Byte Frames",
|
|
"TX 1024 - 1518 Byte Frames",
|
|
"TX Greater 1518 Byte Frames",
|
|
"EEE TX LPI Transitions",
|
|
"EEE TX LPI Time",
|
|
};
|
|
|
|
struct lan78xx_statstage {
|
|
u32 rx_fcs_errors;
|
|
u32 rx_alignment_errors;
|
|
u32 rx_fragment_errors;
|
|
u32 rx_jabber_errors;
|
|
u32 rx_undersize_frame_errors;
|
|
u32 rx_oversize_frame_errors;
|
|
u32 rx_dropped_frames;
|
|
u32 rx_unicast_byte_count;
|
|
u32 rx_broadcast_byte_count;
|
|
u32 rx_multicast_byte_count;
|
|
u32 rx_unicast_frames;
|
|
u32 rx_broadcast_frames;
|
|
u32 rx_multicast_frames;
|
|
u32 rx_pause_frames;
|
|
u32 rx_64_byte_frames;
|
|
u32 rx_65_127_byte_frames;
|
|
u32 rx_128_255_byte_frames;
|
|
u32 rx_256_511_bytes_frames;
|
|
u32 rx_512_1023_byte_frames;
|
|
u32 rx_1024_1518_byte_frames;
|
|
u32 rx_greater_1518_byte_frames;
|
|
u32 eee_rx_lpi_transitions;
|
|
u32 eee_rx_lpi_time;
|
|
u32 tx_fcs_errors;
|
|
u32 tx_excess_deferral_errors;
|
|
u32 tx_carrier_errors;
|
|
u32 tx_bad_byte_count;
|
|
u32 tx_single_collisions;
|
|
u32 tx_multiple_collisions;
|
|
u32 tx_excessive_collision;
|
|
u32 tx_late_collisions;
|
|
u32 tx_unicast_byte_count;
|
|
u32 tx_broadcast_byte_count;
|
|
u32 tx_multicast_byte_count;
|
|
u32 tx_unicast_frames;
|
|
u32 tx_broadcast_frames;
|
|
u32 tx_multicast_frames;
|
|
u32 tx_pause_frames;
|
|
u32 tx_64_byte_frames;
|
|
u32 tx_65_127_byte_frames;
|
|
u32 tx_128_255_byte_frames;
|
|
u32 tx_256_511_bytes_frames;
|
|
u32 tx_512_1023_byte_frames;
|
|
u32 tx_1024_1518_byte_frames;
|
|
u32 tx_greater_1518_byte_frames;
|
|
u32 eee_tx_lpi_transitions;
|
|
u32 eee_tx_lpi_time;
|
|
};
|
|
|
|
struct lan78xx_statstage64 {
|
|
u64 rx_fcs_errors;
|
|
u64 rx_alignment_errors;
|
|
u64 rx_fragment_errors;
|
|
u64 rx_jabber_errors;
|
|
u64 rx_undersize_frame_errors;
|
|
u64 rx_oversize_frame_errors;
|
|
u64 rx_dropped_frames;
|
|
u64 rx_unicast_byte_count;
|
|
u64 rx_broadcast_byte_count;
|
|
u64 rx_multicast_byte_count;
|
|
u64 rx_unicast_frames;
|
|
u64 rx_broadcast_frames;
|
|
u64 rx_multicast_frames;
|
|
u64 rx_pause_frames;
|
|
u64 rx_64_byte_frames;
|
|
u64 rx_65_127_byte_frames;
|
|
u64 rx_128_255_byte_frames;
|
|
u64 rx_256_511_bytes_frames;
|
|
u64 rx_512_1023_byte_frames;
|
|
u64 rx_1024_1518_byte_frames;
|
|
u64 rx_greater_1518_byte_frames;
|
|
u64 eee_rx_lpi_transitions;
|
|
u64 eee_rx_lpi_time;
|
|
u64 tx_fcs_errors;
|
|
u64 tx_excess_deferral_errors;
|
|
u64 tx_carrier_errors;
|
|
u64 tx_bad_byte_count;
|
|
u64 tx_single_collisions;
|
|
u64 tx_multiple_collisions;
|
|
u64 tx_excessive_collision;
|
|
u64 tx_late_collisions;
|
|
u64 tx_unicast_byte_count;
|
|
u64 tx_broadcast_byte_count;
|
|
u64 tx_multicast_byte_count;
|
|
u64 tx_unicast_frames;
|
|
u64 tx_broadcast_frames;
|
|
u64 tx_multicast_frames;
|
|
u64 tx_pause_frames;
|
|
u64 tx_64_byte_frames;
|
|
u64 tx_65_127_byte_frames;
|
|
u64 tx_128_255_byte_frames;
|
|
u64 tx_256_511_bytes_frames;
|
|
u64 tx_512_1023_byte_frames;
|
|
u64 tx_1024_1518_byte_frames;
|
|
u64 tx_greater_1518_byte_frames;
|
|
u64 eee_tx_lpi_transitions;
|
|
u64 eee_tx_lpi_time;
|
|
};
|
|
|
|
static u32 lan78xx_regs[] = {
|
|
ID_REV,
|
|
INT_STS,
|
|
HW_CFG,
|
|
PMT_CTL,
|
|
E2P_CMD,
|
|
E2P_DATA,
|
|
USB_STATUS,
|
|
VLAN_TYPE,
|
|
MAC_CR,
|
|
MAC_RX,
|
|
MAC_TX,
|
|
FLOW,
|
|
ERR_STS,
|
|
MII_ACC,
|
|
MII_DATA,
|
|
EEE_TX_LPI_REQ_DLY,
|
|
EEE_TW_TX_SYS,
|
|
EEE_TX_LPI_REM_DLY,
|
|
WUCSR
|
|
};
|
|
|
|
#define PHY_REG_SIZE (32 * sizeof(u32))
|
|
|
|
struct lan78xx_net;
|
|
|
|
struct lan78xx_priv {
|
|
struct lan78xx_net *dev;
|
|
u32 rfe_ctl;
|
|
u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicast hash table */
|
|
u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */
|
|
u32 vlan_table[DP_SEL_VHF_VLAN_LEN];
|
|
struct mutex dataport_mutex; /* for dataport access */
|
|
spinlock_t rfe_ctl_lock; /* for rfe register access */
|
|
struct work_struct set_multicast;
|
|
struct work_struct set_vlan;
|
|
u32 wol;
|
|
};
|
|
|
|
enum skb_state {
|
|
illegal = 0,
|
|
tx_start,
|
|
tx_done,
|
|
rx_start,
|
|
rx_done,
|
|
rx_cleanup,
|
|
unlink_start
|
|
};
|
|
|
|
struct skb_data { /* skb->cb is one of these */
|
|
struct urb *urb;
|
|
struct lan78xx_net *dev;
|
|
enum skb_state state;
|
|
size_t length;
|
|
int num_of_packet;
|
|
};
|
|
|
|
struct usb_context {
|
|
struct usb_ctrlrequest req;
|
|
struct lan78xx_net *dev;
|
|
};
|
|
|
|
#define EVENT_TX_HALT 0
|
|
#define EVENT_RX_HALT 1
|
|
#define EVENT_RX_MEMORY 2
|
|
#define EVENT_STS_SPLIT 3
|
|
#define EVENT_LINK_RESET 4
|
|
#define EVENT_RX_PAUSED 5
|
|
#define EVENT_DEV_WAKING 6
|
|
#define EVENT_DEV_ASLEEP 7
|
|
#define EVENT_DEV_OPEN 8
|
|
#define EVENT_STAT_UPDATE 9
|
|
#define EVENT_DEV_DISCONNECT 10
|
|
|
|
struct statstage {
|
|
struct mutex access_lock; /* for stats access */
|
|
struct lan78xx_statstage saved;
|
|
struct lan78xx_statstage rollover_count;
|
|
struct lan78xx_statstage rollover_max;
|
|
struct lan78xx_statstage64 curr_stat;
|
|
};
|
|
|
|
struct irq_domain_data {
|
|
struct irq_domain *irqdomain;
|
|
unsigned int phyirq;
|
|
struct irq_chip *irqchip;
|
|
irq_flow_handler_t irq_handler;
|
|
u32 irqenable;
|
|
struct mutex irq_lock; /* for irq bus access */
|
|
};
|
|
|
|
struct lan78xx_net {
|
|
struct net_device *net;
|
|
struct usb_device *udev;
|
|
struct usb_interface *intf;
|
|
void *driver_priv;
|
|
|
|
unsigned int tx_pend_data_len;
|
|
size_t n_tx_urbs;
|
|
size_t n_rx_urbs;
|
|
size_t tx_urb_size;
|
|
size_t rx_urb_size;
|
|
|
|
struct sk_buff_head rxq_free;
|
|
struct sk_buff_head rxq;
|
|
struct sk_buff_head rxq_done;
|
|
struct sk_buff_head rxq_overflow;
|
|
struct sk_buff_head txq_free;
|
|
struct sk_buff_head txq;
|
|
struct sk_buff_head txq_pend;
|
|
|
|
struct napi_struct napi;
|
|
|
|
struct delayed_work wq;
|
|
|
|
int msg_enable;
|
|
|
|
struct urb *urb_intr;
|
|
struct usb_anchor deferred;
|
|
|
|
struct mutex dev_mutex; /* serialise open/stop wrt suspend/resume */
|
|
struct mutex phy_mutex; /* for phy access */
|
|
unsigned int pipe_in, pipe_out, pipe_intr;
|
|
|
|
unsigned int bulk_in_delay;
|
|
unsigned int burst_cap;
|
|
|
|
unsigned long flags;
|
|
|
|
wait_queue_head_t *wait;
|
|
unsigned char suspend_count;
|
|
|
|
unsigned int maxpacket;
|
|
struct timer_list stat_monitor;
|
|
|
|
unsigned long data[5];
|
|
|
|
int link_on;
|
|
u8 mdix_ctrl;
|
|
|
|
u32 chipid;
|
|
u32 chiprev;
|
|
struct mii_bus *mdiobus;
|
|
phy_interface_t interface;
|
|
|
|
int fc_autoneg;
|
|
u8 fc_request_control;
|
|
|
|
int delta;
|
|
struct statstage stats;
|
|
|
|
struct irq_domain_data domain_data;
|
|
};
|
|
|
|
/* define external phy id */
|
|
#define PHY_LAN8835 (0x0007C130)
|
|
#define PHY_KSZ9031RNX (0x00221620)
|
|
|
|
/* use ethtool to change the level for any given device */
|
|
static int msg_level = -1;
|
|
module_param(msg_level, int, 0);
|
|
MODULE_PARM_DESC(msg_level, "Override default message level");
|
|
|
|
static struct sk_buff *lan78xx_get_buf(struct sk_buff_head *buf_pool)
|
|
{
|
|
if (skb_queue_empty(buf_pool))
|
|
return NULL;
|
|
|
|
return skb_dequeue(buf_pool);
|
|
}
|
|
|
|
static void lan78xx_release_buf(struct sk_buff_head *buf_pool,
|
|
struct sk_buff *buf)
|
|
{
|
|
buf->data = buf->head;
|
|
skb_reset_tail_pointer(buf);
|
|
|
|
buf->len = 0;
|
|
buf->data_len = 0;
|
|
|
|
skb_queue_tail(buf_pool, buf);
|
|
}
|
|
|
|
static void lan78xx_free_buf_pool(struct sk_buff_head *buf_pool)
|
|
{
|
|
struct skb_data *entry;
|
|
struct sk_buff *buf;
|
|
|
|
while (!skb_queue_empty(buf_pool)) {
|
|
buf = skb_dequeue(buf_pool);
|
|
if (buf) {
|
|
entry = (struct skb_data *)buf->cb;
|
|
usb_free_urb(entry->urb);
|
|
dev_kfree_skb_any(buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int lan78xx_alloc_buf_pool(struct sk_buff_head *buf_pool,
|
|
size_t n_urbs, size_t urb_size,
|
|
struct lan78xx_net *dev)
|
|
{
|
|
struct skb_data *entry;
|
|
struct sk_buff *buf;
|
|
struct urb *urb;
|
|
int i;
|
|
|
|
skb_queue_head_init(buf_pool);
|
|
|
|
for (i = 0; i < n_urbs; i++) {
|
|
buf = alloc_skb(urb_size, GFP_ATOMIC);
|
|
if (!buf)
|
|
goto error;
|
|
|
|
if (skb_linearize(buf) != 0) {
|
|
dev_kfree_skb_any(buf);
|
|
goto error;
|
|
}
|
|
|
|
urb = usb_alloc_urb(0, GFP_ATOMIC);
|
|
if (!urb) {
|
|
dev_kfree_skb_any(buf);
|
|
goto error;
|
|
}
|
|
|
|
entry = (struct skb_data *)buf->cb;
|
|
entry->urb = urb;
|
|
entry->dev = dev;
|
|
entry->length = 0;
|
|
entry->num_of_packet = 0;
|
|
|
|
skb_queue_tail(buf_pool, buf);
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
lan78xx_free_buf_pool(buf_pool);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static struct sk_buff *lan78xx_get_rx_buf(struct lan78xx_net *dev)
|
|
{
|
|
return lan78xx_get_buf(&dev->rxq_free);
|
|
}
|
|
|
|
static void lan78xx_release_rx_buf(struct lan78xx_net *dev,
|
|
struct sk_buff *rx_buf)
|
|
{
|
|
lan78xx_release_buf(&dev->rxq_free, rx_buf);
|
|
}
|
|
|
|
static void lan78xx_free_rx_resources(struct lan78xx_net *dev)
|
|
{
|
|
lan78xx_free_buf_pool(&dev->rxq_free);
|
|
}
|
|
|
|
static int lan78xx_alloc_rx_resources(struct lan78xx_net *dev)
|
|
{
|
|
return lan78xx_alloc_buf_pool(&dev->rxq_free,
|
|
dev->n_rx_urbs, dev->rx_urb_size, dev);
|
|
}
|
|
|
|
static struct sk_buff *lan78xx_get_tx_buf(struct lan78xx_net *dev)
|
|
{
|
|
return lan78xx_get_buf(&dev->txq_free);
|
|
}
|
|
|
|
static void lan78xx_release_tx_buf(struct lan78xx_net *dev,
|
|
struct sk_buff *tx_buf)
|
|
{
|
|
lan78xx_release_buf(&dev->txq_free, tx_buf);
|
|
}
|
|
|
|
static void lan78xx_free_tx_resources(struct lan78xx_net *dev)
|
|
{
|
|
lan78xx_free_buf_pool(&dev->txq_free);
|
|
}
|
|
|
|
static int lan78xx_alloc_tx_resources(struct lan78xx_net *dev)
|
|
{
|
|
return lan78xx_alloc_buf_pool(&dev->txq_free,
|
|
dev->n_tx_urbs, dev->tx_urb_size, dev);
|
|
}
|
|
|
|
static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
|
|
{
|
|
u32 *buf;
|
|
int ret;
|
|
|
|
if (test_bit(EVENT_DEV_DISCONNECT, &dev->flags))
|
|
return -ENODEV;
|
|
|
|
buf = kmalloc(sizeof(u32), GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
|
|
USB_VENDOR_REQUEST_READ_REGISTER,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, index, buf, 4, USB_CTRL_GET_TIMEOUT);
|
|
if (likely(ret >= 0)) {
|
|
le32_to_cpus(buf);
|
|
*data = *buf;
|
|
} else if (net_ratelimit()) {
|
|
netdev_warn(dev->net,
|
|
"Failed to read register index 0x%08x. ret = %d",
|
|
index, ret);
|
|
}
|
|
|
|
kfree(buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data)
|
|
{
|
|
u32 *buf;
|
|
int ret;
|
|
|
|
if (test_bit(EVENT_DEV_DISCONNECT, &dev->flags))
|
|
return -ENODEV;
|
|
|
|
buf = kmalloc(sizeof(u32), GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
*buf = data;
|
|
cpu_to_le32s(buf);
|
|
|
|
ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
|
|
USB_VENDOR_REQUEST_WRITE_REGISTER,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, index, buf, 4, USB_CTRL_SET_TIMEOUT);
|
|
if (unlikely(ret < 0) &&
|
|
net_ratelimit()) {
|
|
netdev_warn(dev->net,
|
|
"Failed to write register index 0x%08x. ret = %d",
|
|
index, ret);
|
|
}
|
|
|
|
kfree(buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_update_reg(struct lan78xx_net *dev, u32 reg, u32 mask,
|
|
u32 data)
|
|
{
|
|
int ret;
|
|
u32 buf;
|
|
|
|
ret = lan78xx_read_reg(dev, reg, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf &= ~mask;
|
|
buf |= (mask & data);
|
|
|
|
ret = lan78xx_write_reg(dev, reg, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_read_stats(struct lan78xx_net *dev,
|
|
struct lan78xx_statstage *data)
|
|
{
|
|
int ret = 0;
|
|
int i;
|
|
struct lan78xx_statstage *stats;
|
|
u32 *src;
|
|
u32 *dst;
|
|
|
|
stats = kmalloc(sizeof(*stats), GFP_KERNEL);
|
|
if (!stats)
|
|
return -ENOMEM;
|
|
|
|
ret = usb_control_msg(dev->udev,
|
|
usb_rcvctrlpipe(dev->udev, 0),
|
|
USB_VENDOR_REQUEST_GET_STATS,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0,
|
|
0,
|
|
(void *)stats,
|
|
sizeof(*stats),
|
|
USB_CTRL_SET_TIMEOUT);
|
|
if (likely(ret >= 0)) {
|
|
src = (u32 *)stats;
|
|
dst = (u32 *)data;
|
|
for (i = 0; i < sizeof(*stats) / sizeof(u32); i++) {
|
|
le32_to_cpus(&src[i]);
|
|
dst[i] = src[i];
|
|
}
|
|
} else {
|
|
netdev_warn(dev->net,
|
|
"Failed to read stat ret = %d", ret);
|
|
}
|
|
|
|
kfree(stats);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define check_counter_rollover(struct1, dev_stats, member) \
|
|
do { \
|
|
if ((struct1)->member < (dev_stats).saved.member) \
|
|
(dev_stats).rollover_count.member++; \
|
|
} while (0)
|
|
|
|
static void lan78xx_check_stat_rollover(struct lan78xx_net *dev,
|
|
struct lan78xx_statstage *stats)
|
|
{
|
|
check_counter_rollover(stats, dev->stats, rx_fcs_errors);
|
|
check_counter_rollover(stats, dev->stats, rx_alignment_errors);
|
|
check_counter_rollover(stats, dev->stats, rx_fragment_errors);
|
|
check_counter_rollover(stats, dev->stats, rx_jabber_errors);
|
|
check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors);
|
|
check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors);
|
|
check_counter_rollover(stats, dev->stats, rx_dropped_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_unicast_byte_count);
|
|
check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count);
|
|
check_counter_rollover(stats, dev->stats, rx_multicast_byte_count);
|
|
check_counter_rollover(stats, dev->stats, rx_unicast_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_broadcast_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_multicast_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_pause_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_64_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions);
|
|
check_counter_rollover(stats, dev->stats, eee_rx_lpi_time);
|
|
check_counter_rollover(stats, dev->stats, tx_fcs_errors);
|
|
check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors);
|
|
check_counter_rollover(stats, dev->stats, tx_carrier_errors);
|
|
check_counter_rollover(stats, dev->stats, tx_bad_byte_count);
|
|
check_counter_rollover(stats, dev->stats, tx_single_collisions);
|
|
check_counter_rollover(stats, dev->stats, tx_multiple_collisions);
|
|
check_counter_rollover(stats, dev->stats, tx_excessive_collision);
|
|
check_counter_rollover(stats, dev->stats, tx_late_collisions);
|
|
check_counter_rollover(stats, dev->stats, tx_unicast_byte_count);
|
|
check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count);
|
|
check_counter_rollover(stats, dev->stats, tx_multicast_byte_count);
|
|
check_counter_rollover(stats, dev->stats, tx_unicast_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_broadcast_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_multicast_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_pause_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_64_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames);
|
|
check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions);
|
|
check_counter_rollover(stats, dev->stats, eee_tx_lpi_time);
|
|
|
|
memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage));
|
|
}
|
|
|
|
static void lan78xx_update_stats(struct lan78xx_net *dev)
|
|
{
|
|
u32 *p, *count, *max;
|
|
u64 *data;
|
|
int i;
|
|
struct lan78xx_statstage lan78xx_stats;
|
|
|
|
if (usb_autopm_get_interface(dev->intf) < 0)
|
|
return;
|
|
|
|
p = (u32 *)&lan78xx_stats;
|
|
count = (u32 *)&dev->stats.rollover_count;
|
|
max = (u32 *)&dev->stats.rollover_max;
|
|
data = (u64 *)&dev->stats.curr_stat;
|
|
|
|
mutex_lock(&dev->stats.access_lock);
|
|
|
|
if (lan78xx_read_stats(dev, &lan78xx_stats) > 0)
|
|
lan78xx_check_stat_rollover(dev, &lan78xx_stats);
|
|
|
|
for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++)
|
|
data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1));
|
|
|
|
mutex_unlock(&dev->stats.access_lock);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
}
|
|
|
|
/* Loop until the read is completed with timeout called with phy_mutex held */
|
|
static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev)
|
|
{
|
|
unsigned long start_time = jiffies;
|
|
u32 val;
|
|
int ret;
|
|
|
|
do {
|
|
ret = lan78xx_read_reg(dev, MII_ACC, &val);
|
|
if (unlikely(ret < 0))
|
|
return -EIO;
|
|
|
|
if (!(val & MII_ACC_MII_BUSY_))
|
|
return 0;
|
|
} while (!time_after(jiffies, start_time + HZ));
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static inline u32 mii_access(int id, int index, int read)
|
|
{
|
|
u32 ret;
|
|
|
|
ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_;
|
|
ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_;
|
|
if (read)
|
|
ret |= MII_ACC_MII_READ_;
|
|
else
|
|
ret |= MII_ACC_MII_WRITE_;
|
|
ret |= MII_ACC_MII_BUSY_;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_wait_eeprom(struct lan78xx_net *dev)
|
|
{
|
|
unsigned long start_time = jiffies;
|
|
u32 val;
|
|
int ret;
|
|
|
|
do {
|
|
ret = lan78xx_read_reg(dev, E2P_CMD, &val);
|
|
if (unlikely(ret < 0))
|
|
return -EIO;
|
|
|
|
if (!(val & E2P_CMD_EPC_BUSY_) ||
|
|
(val & E2P_CMD_EPC_TIMEOUT_))
|
|
break;
|
|
usleep_range(40, 100);
|
|
} while (!time_after(jiffies, start_time + HZ));
|
|
|
|
if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) {
|
|
netdev_warn(dev->net, "EEPROM read operation timeout");
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev)
|
|
{
|
|
unsigned long start_time = jiffies;
|
|
u32 val;
|
|
int ret;
|
|
|
|
do {
|
|
ret = lan78xx_read_reg(dev, E2P_CMD, &val);
|
|
if (unlikely(ret < 0))
|
|
return -EIO;
|
|
|
|
if (!(val & E2P_CMD_EPC_BUSY_))
|
|
return 0;
|
|
|
|
usleep_range(40, 100);
|
|
} while (!time_after(jiffies, start_time + HZ));
|
|
|
|
netdev_warn(dev->net, "EEPROM is busy");
|
|
return -EIO;
|
|
}
|
|
|
|
static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset,
|
|
u32 length, u8 *data)
|
|
{
|
|
u32 val;
|
|
u32 saved;
|
|
int i, ret;
|
|
int retval;
|
|
|
|
/* depends on chip, some EEPROM pins are muxed with LED function.
|
|
* disable & restore LED function to access EEPROM.
|
|
*/
|
|
ret = lan78xx_read_reg(dev, HW_CFG, &val);
|
|
saved = val;
|
|
if (dev->chipid == ID_REV_CHIP_ID_7800_) {
|
|
val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
|
|
ret = lan78xx_write_reg(dev, HW_CFG, val);
|
|
}
|
|
|
|
retval = lan78xx_eeprom_confirm_not_busy(dev);
|
|
if (retval)
|
|
return retval;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_;
|
|
val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
|
|
ret = lan78xx_write_reg(dev, E2P_CMD, val);
|
|
if (unlikely(ret < 0)) {
|
|
retval = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
retval = lan78xx_wait_eeprom(dev);
|
|
if (retval < 0)
|
|
goto exit;
|
|
|
|
ret = lan78xx_read_reg(dev, E2P_DATA, &val);
|
|
if (unlikely(ret < 0)) {
|
|
retval = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
data[i] = val & 0xFF;
|
|
offset++;
|
|
}
|
|
|
|
retval = 0;
|
|
exit:
|
|
if (dev->chipid == ID_REV_CHIP_ID_7800_)
|
|
ret = lan78xx_write_reg(dev, HW_CFG, saved);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset,
|
|
u32 length, u8 *data)
|
|
{
|
|
u8 sig;
|
|
int ret;
|
|
|
|
ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig);
|
|
if ((ret == 0) && (sig == EEPROM_INDICATOR))
|
|
ret = lan78xx_read_raw_eeprom(dev, offset, length, data);
|
|
else
|
|
ret = -EINVAL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset,
|
|
u32 length, u8 *data)
|
|
{
|
|
u32 val;
|
|
u32 saved;
|
|
int i, ret;
|
|
int retval;
|
|
|
|
/* depends on chip, some EEPROM pins are muxed with LED function.
|
|
* disable & restore LED function to access EEPROM.
|
|
*/
|
|
ret = lan78xx_read_reg(dev, HW_CFG, &val);
|
|
saved = val;
|
|
if (dev->chipid == ID_REV_CHIP_ID_7800_) {
|
|
val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
|
|
ret = lan78xx_write_reg(dev, HW_CFG, val);
|
|
}
|
|
|
|
retval = lan78xx_eeprom_confirm_not_busy(dev);
|
|
if (retval)
|
|
goto exit;
|
|
|
|
/* Issue write/erase enable command */
|
|
val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_;
|
|
ret = lan78xx_write_reg(dev, E2P_CMD, val);
|
|
if (unlikely(ret < 0)) {
|
|
retval = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
retval = lan78xx_wait_eeprom(dev);
|
|
if (retval < 0)
|
|
goto exit;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
/* Fill data register */
|
|
val = data[i];
|
|
ret = lan78xx_write_reg(dev, E2P_DATA, val);
|
|
if (ret < 0) {
|
|
retval = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
/* Send "write" command */
|
|
val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_;
|
|
val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
|
|
ret = lan78xx_write_reg(dev, E2P_CMD, val);
|
|
if (ret < 0) {
|
|
retval = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
retval = lan78xx_wait_eeprom(dev);
|
|
if (retval < 0)
|
|
goto exit;
|
|
|
|
offset++;
|
|
}
|
|
|
|
retval = 0;
|
|
exit:
|
|
if (dev->chipid == ID_REV_CHIP_ID_7800_)
|
|
ret = lan78xx_write_reg(dev, HW_CFG, saved);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset,
|
|
u32 length, u8 *data)
|
|
{
|
|
int i;
|
|
u32 buf;
|
|
unsigned long timeout;
|
|
|
|
lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
|
|
|
|
if (buf & OTP_PWR_DN_PWRDN_N_) {
|
|
/* clear it and wait to be cleared */
|
|
lan78xx_write_reg(dev, OTP_PWR_DN, 0);
|
|
|
|
timeout = jiffies + HZ;
|
|
do {
|
|
usleep_range(1, 10);
|
|
lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
|
|
if (time_after(jiffies, timeout)) {
|
|
netdev_warn(dev->net,
|
|
"timeout on OTP_PWR_DN");
|
|
return -EIO;
|
|
}
|
|
} while (buf & OTP_PWR_DN_PWRDN_N_);
|
|
}
|
|
|
|
for (i = 0; i < length; i++) {
|
|
lan78xx_write_reg(dev, OTP_ADDR1,
|
|
((offset + i) >> 8) & OTP_ADDR1_15_11);
|
|
lan78xx_write_reg(dev, OTP_ADDR2,
|
|
((offset + i) & OTP_ADDR2_10_3));
|
|
|
|
lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_);
|
|
lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
|
|
|
|
timeout = jiffies + HZ;
|
|
do {
|
|
udelay(1);
|
|
lan78xx_read_reg(dev, OTP_STATUS, &buf);
|
|
if (time_after(jiffies, timeout)) {
|
|
netdev_warn(dev->net,
|
|
"timeout on OTP_STATUS");
|
|
return -EIO;
|
|
}
|
|
} while (buf & OTP_STATUS_BUSY_);
|
|
|
|
lan78xx_read_reg(dev, OTP_RD_DATA, &buf);
|
|
|
|
data[i] = (u8)(buf & 0xFF);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset,
|
|
u32 length, u8 *data)
|
|
{
|
|
int i;
|
|
u32 buf;
|
|
unsigned long timeout;
|
|
|
|
lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
|
|
|
|
if (buf & OTP_PWR_DN_PWRDN_N_) {
|
|
/* clear it and wait to be cleared */
|
|
lan78xx_write_reg(dev, OTP_PWR_DN, 0);
|
|
|
|
timeout = jiffies + HZ;
|
|
do {
|
|
udelay(1);
|
|
lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
|
|
if (time_after(jiffies, timeout)) {
|
|
netdev_warn(dev->net,
|
|
"timeout on OTP_PWR_DN completion");
|
|
return -EIO;
|
|
}
|
|
} while (buf & OTP_PWR_DN_PWRDN_N_);
|
|
}
|
|
|
|
/* set to BYTE program mode */
|
|
lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_);
|
|
|
|
for (i = 0; i < length; i++) {
|
|
lan78xx_write_reg(dev, OTP_ADDR1,
|
|
((offset + i) >> 8) & OTP_ADDR1_15_11);
|
|
lan78xx_write_reg(dev, OTP_ADDR2,
|
|
((offset + i) & OTP_ADDR2_10_3));
|
|
lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]);
|
|
lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_);
|
|
lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
|
|
|
|
timeout = jiffies + HZ;
|
|
do {
|
|
udelay(1);
|
|
lan78xx_read_reg(dev, OTP_STATUS, &buf);
|
|
if (time_after(jiffies, timeout)) {
|
|
netdev_warn(dev->net,
|
|
"Timeout on OTP_STATUS completion");
|
|
return -EIO;
|
|
}
|
|
} while (buf & OTP_STATUS_BUSY_);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
|
|
u32 length, u8 *data)
|
|
{
|
|
u8 sig;
|
|
int ret;
|
|
|
|
ret = lan78xx_read_raw_otp(dev, 0, 1, &sig);
|
|
|
|
if (ret == 0) {
|
|
if (sig == OTP_INDICATOR_2)
|
|
offset += 0x100;
|
|
else if (sig != OTP_INDICATOR_1)
|
|
ret = -EINVAL;
|
|
if (!ret)
|
|
ret = lan78xx_read_raw_otp(dev, offset, length, data);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < 100; i++) {
|
|
u32 dp_sel;
|
|
|
|
ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
|
|
if (unlikely(ret < 0))
|
|
return -EIO;
|
|
|
|
if (dp_sel & DP_SEL_DPRDY_)
|
|
return 0;
|
|
|
|
usleep_range(40, 100);
|
|
}
|
|
|
|
netdev_warn(dev->net, "%s timed out", __func__);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select,
|
|
u32 addr, u32 length, u32 *buf)
|
|
{
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
u32 dp_sel;
|
|
int i, ret;
|
|
|
|
if (usb_autopm_get_interface(dev->intf) < 0)
|
|
return 0;
|
|
|
|
mutex_lock(&pdata->dataport_mutex);
|
|
|
|
ret = lan78xx_dataport_wait_not_busy(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
|
|
|
|
dp_sel &= ~DP_SEL_RSEL_MASK_;
|
|
dp_sel |= ram_select;
|
|
ret = lan78xx_write_reg(dev, DP_SEL, dp_sel);
|
|
|
|
for (i = 0; i < length; i++) {
|
|
ret = lan78xx_write_reg(dev, DP_ADDR, addr + i);
|
|
|
|
ret = lan78xx_write_reg(dev, DP_DATA, buf[i]);
|
|
|
|
ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_);
|
|
|
|
ret = lan78xx_dataport_wait_not_busy(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
mutex_unlock(&pdata->dataport_mutex);
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata,
|
|
int index, u8 addr[ETH_ALEN])
|
|
{
|
|
u32 temp;
|
|
|
|
if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) {
|
|
temp = addr[3];
|
|
temp = addr[2] | (temp << 8);
|
|
temp = addr[1] | (temp << 8);
|
|
temp = addr[0] | (temp << 8);
|
|
pdata->pfilter_table[index][1] = temp;
|
|
temp = addr[5];
|
|
temp = addr[4] | (temp << 8);
|
|
temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_;
|
|
pdata->pfilter_table[index][0] = temp;
|
|
}
|
|
}
|
|
|
|
/* returns hash bit number for given MAC address */
|
|
static inline u32 lan78xx_hash(char addr[ETH_ALEN])
|
|
{
|
|
return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
|
|
}
|
|
|
|
static void lan78xx_deferred_multicast_write(struct work_struct *param)
|
|
{
|
|
struct lan78xx_priv *pdata =
|
|
container_of(param, struct lan78xx_priv, set_multicast);
|
|
struct lan78xx_net *dev = pdata->dev;
|
|
int i;
|
|
|
|
netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
|
|
pdata->rfe_ctl);
|
|
|
|
lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN,
|
|
DP_SEL_VHF_HASH_LEN, pdata->mchash_table);
|
|
|
|
for (i = 1; i < NUM_OF_MAF; i++) {
|
|
lan78xx_write_reg(dev, MAF_HI(i), 0);
|
|
lan78xx_write_reg(dev, MAF_LO(i),
|
|
pdata->pfilter_table[i][1]);
|
|
lan78xx_write_reg(dev, MAF_HI(i),
|
|
pdata->pfilter_table[i][0]);
|
|
}
|
|
|
|
lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
|
|
}
|
|
|
|
static void lan78xx_set_multicast(struct net_device *netdev)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
|
|
|
|
pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ |
|
|
RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
|
|
|
|
for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
|
|
pdata->mchash_table[i] = 0;
|
|
|
|
/* pfilter_table[0] has own HW address */
|
|
for (i = 1; i < NUM_OF_MAF; i++) {
|
|
pdata->pfilter_table[i][0] = 0;
|
|
pdata->pfilter_table[i][1] = 0;
|
|
}
|
|
|
|
pdata->rfe_ctl |= RFE_CTL_BCAST_EN_;
|
|
|
|
if (dev->net->flags & IFF_PROMISC) {
|
|
netif_dbg(dev, drv, dev->net, "promiscuous mode enabled");
|
|
pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_;
|
|
} else {
|
|
if (dev->net->flags & IFF_ALLMULTI) {
|
|
netif_dbg(dev, drv, dev->net,
|
|
"receive all multicast enabled");
|
|
pdata->rfe_ctl |= RFE_CTL_MCAST_EN_;
|
|
}
|
|
}
|
|
|
|
if (netdev_mc_count(dev->net)) {
|
|
struct netdev_hw_addr *ha;
|
|
int i;
|
|
|
|
netif_dbg(dev, drv, dev->net, "receive multicast hash filter");
|
|
|
|
pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_;
|
|
|
|
i = 1;
|
|
netdev_for_each_mc_addr(ha, netdev) {
|
|
/* set first 32 into Perfect Filter */
|
|
if (i < 33) {
|
|
lan78xx_set_addr_filter(pdata, i, ha->addr);
|
|
} else {
|
|
u32 bitnum = lan78xx_hash(ha->addr);
|
|
|
|
pdata->mchash_table[bitnum / 32] |=
|
|
(1 << (bitnum % 32));
|
|
pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_;
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
|
|
|
|
/* defer register writes to a sleepable context */
|
|
schedule_work(&pdata->set_multicast);
|
|
}
|
|
|
|
static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex,
|
|
u16 lcladv, u16 rmtadv)
|
|
{
|
|
u32 flow = 0, fct_flow = 0;
|
|
u8 cap;
|
|
|
|
if (dev->fc_autoneg)
|
|
cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
|
|
else
|
|
cap = dev->fc_request_control;
|
|
|
|
if (cap & FLOW_CTRL_TX)
|
|
flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF);
|
|
|
|
if (cap & FLOW_CTRL_RX)
|
|
flow |= FLOW_CR_RX_FCEN_;
|
|
|
|
if (dev->udev->speed == USB_SPEED_SUPER)
|
|
fct_flow = FLOW_CTRL_THRESHOLD(FLOW_ON_SS, FLOW_OFF_SS);
|
|
else if (dev->udev->speed == USB_SPEED_HIGH)
|
|
fct_flow = FLOW_CTRL_THRESHOLD(FLOW_ON_HS, FLOW_OFF_HS);
|
|
|
|
netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s",
|
|
(cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
|
|
(cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
|
|
|
|
lan78xx_write_reg(dev, FCT_FLOW, fct_flow);
|
|
|
|
/* threshold value should be set before enabling flow */
|
|
lan78xx_write_reg(dev, FLOW, flow);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void lan78xx_rx_urb_submit_all(struct lan78xx_net *dev);
|
|
|
|
static int lan78xx_mac_reset(struct lan78xx_net *dev)
|
|
{
|
|
unsigned long start_time = jiffies;
|
|
u32 val;
|
|
int ret;
|
|
|
|
mutex_lock(&dev->phy_mutex);
|
|
|
|
/* Resetting the device while there is activity on the MDIO
|
|
* bus can result in the MAC interface locking up and not
|
|
* completing register access transactions.
|
|
*/
|
|
ret = lan78xx_phy_wait_not_busy(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
ret = lan78xx_read_reg(dev, MAC_CR, &val);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
val |= MAC_CR_RST_;
|
|
ret = lan78xx_write_reg(dev, MAC_CR, val);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
/* Wait for the reset to complete before allowing any further
|
|
* MAC register accesses otherwise the MAC may lock up.
|
|
*/
|
|
do {
|
|
ret = lan78xx_read_reg(dev, MAC_CR, &val);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
if (!(val & MAC_CR_RST_)) {
|
|
ret = 0;
|
|
goto done;
|
|
}
|
|
} while (!time_after(jiffies, start_time + HZ));
|
|
|
|
ret = -ETIMEDOUT;
|
|
done:
|
|
mutex_unlock(&dev->phy_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_link_reset(struct lan78xx_net *dev)
|
|
{
|
|
struct phy_device *phydev = dev->net->phydev;
|
|
struct ethtool_link_ksettings ecmd;
|
|
int ladv, radv, ret, link;
|
|
u32 buf;
|
|
|
|
/* clear LAN78xx interrupt status */
|
|
ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_);
|
|
if (unlikely(ret < 0))
|
|
return ret;
|
|
|
|
mutex_lock(&phydev->lock);
|
|
phy_read_status(phydev);
|
|
link = phydev->link;
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
if (!link && dev->link_on) {
|
|
dev->link_on = false;
|
|
|
|
/* reset MAC */
|
|
ret = lan78xx_mac_reset(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
del_timer(&dev->stat_monitor);
|
|
} else if (link && !dev->link_on) {
|
|
dev->link_on = true;
|
|
|
|
phy_ethtool_ksettings_get(phydev, &ecmd);
|
|
|
|
if (dev->udev->speed == USB_SPEED_SUPER) {
|
|
if (ecmd.base.speed == 1000) {
|
|
/* disable U2 */
|
|
ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
buf &= ~USB_CFG1_DEV_U2_INIT_EN_;
|
|
ret = lan78xx_write_reg(dev, USB_CFG1, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
/* enable U1 */
|
|
ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
buf |= USB_CFG1_DEV_U1_INIT_EN_;
|
|
ret = lan78xx_write_reg(dev, USB_CFG1, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
/* enable U1 & U2 */
|
|
ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
buf |= USB_CFG1_DEV_U2_INIT_EN_;
|
|
buf |= USB_CFG1_DEV_U1_INIT_EN_;
|
|
ret = lan78xx_write_reg(dev, USB_CFG1, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ladv = phy_read(phydev, MII_ADVERTISE);
|
|
if (ladv < 0)
|
|
return ladv;
|
|
|
|
radv = phy_read(phydev, MII_LPA);
|
|
if (radv < 0)
|
|
return radv;
|
|
|
|
netif_dbg(dev, link, dev->net,
|
|
"speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x",
|
|
ecmd.base.speed, ecmd.base.duplex, ladv, radv);
|
|
|
|
ret = lan78xx_update_flowcontrol(dev, ecmd.base.duplex, ladv,
|
|
radv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!timer_pending(&dev->stat_monitor)) {
|
|
dev->delta = 1;
|
|
mod_timer(&dev->stat_monitor,
|
|
jiffies + STAT_UPDATE_TIMER);
|
|
}
|
|
|
|
lan78xx_rx_urb_submit_all(dev);
|
|
|
|
napi_schedule(&dev->napi);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* some work can't be done in tasklets, so we use keventd
|
|
*
|
|
* NOTE: annoying asymmetry: if it's active, schedule_work() fails,
|
|
* but tasklet_schedule() doesn't. hope the failure is rare.
|
|
*/
|
|
static void lan78xx_defer_kevent(struct lan78xx_net *dev, int work)
|
|
{
|
|
set_bit(work, &dev->flags);
|
|
if (!schedule_delayed_work(&dev->wq, 0))
|
|
netdev_err(dev->net, "kevent %d may have been dropped\n", work);
|
|
}
|
|
|
|
static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb)
|
|
{
|
|
u32 intdata;
|
|
|
|
if (urb->actual_length != 4) {
|
|
netdev_warn(dev->net,
|
|
"unexpected urb length %d", urb->actual_length);
|
|
return;
|
|
}
|
|
|
|
intdata = get_unaligned_le32(urb->transfer_buffer);
|
|
|
|
if (intdata & INT_ENP_PHY_INT) {
|
|
netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata);
|
|
lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
|
|
|
|
if (dev->domain_data.phyirq > 0)
|
|
generic_handle_irq_safe(dev->domain_data.phyirq);
|
|
} else {
|
|
netdev_warn(dev->net,
|
|
"unexpected interrupt: 0x%08x\n", intdata);
|
|
}
|
|
}
|
|
|
|
static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev)
|
|
{
|
|
return MAX_EEPROM_SIZE;
|
|
}
|
|
|
|
static int lan78xx_ethtool_get_eeprom(struct net_device *netdev,
|
|
struct ethtool_eeprom *ee, u8 *data)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
int ret;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ee->magic = LAN78XX_EEPROM_MAGIC;
|
|
|
|
ret = lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_ethtool_set_eeprom(struct net_device *netdev,
|
|
struct ethtool_eeprom *ee, u8 *data)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
int ret;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Invalid EEPROM_INDICATOR at offset zero will result in a failure
|
|
* to load data from EEPROM
|
|
*/
|
|
if (ee->magic == LAN78XX_EEPROM_MAGIC)
|
|
ret = lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
|
|
else if ((ee->magic == LAN78XX_OTP_MAGIC) &&
|
|
(ee->offset == 0) &&
|
|
(ee->len == 512) &&
|
|
(data[0] == OTP_INDICATOR_1))
|
|
ret = lan78xx_write_raw_otp(dev, ee->offset, ee->len, data);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_get_strings(struct net_device *netdev, u32 stringset,
|
|
u8 *data)
|
|
{
|
|
if (stringset == ETH_SS_STATS)
|
|
memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings));
|
|
}
|
|
|
|
static int lan78xx_get_sset_count(struct net_device *netdev, int sset)
|
|
{
|
|
if (sset == ETH_SS_STATS)
|
|
return ARRAY_SIZE(lan78xx_gstrings);
|
|
else
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void lan78xx_get_stats(struct net_device *netdev,
|
|
struct ethtool_stats *stats, u64 *data)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
|
|
lan78xx_update_stats(dev);
|
|
|
|
mutex_lock(&dev->stats.access_lock);
|
|
memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat));
|
|
mutex_unlock(&dev->stats.access_lock);
|
|
}
|
|
|
|
static void lan78xx_get_wol(struct net_device *netdev,
|
|
struct ethtool_wolinfo *wol)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
int ret;
|
|
u32 buf;
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
|
|
if (usb_autopm_get_interface(dev->intf) < 0)
|
|
return;
|
|
|
|
ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
|
|
if (unlikely(ret < 0)) {
|
|
wol->supported = 0;
|
|
wol->wolopts = 0;
|
|
} else {
|
|
if (buf & USB_CFG_RMT_WKP_) {
|
|
wol->supported = WAKE_ALL;
|
|
wol->wolopts = pdata->wol;
|
|
} else {
|
|
wol->supported = 0;
|
|
wol->wolopts = 0;
|
|
}
|
|
}
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
}
|
|
|
|
static int lan78xx_set_wol(struct net_device *netdev,
|
|
struct ethtool_wolinfo *wol)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
int ret;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (wol->wolopts & ~WAKE_ALL)
|
|
return -EINVAL;
|
|
|
|
pdata->wol = wol->wolopts;
|
|
|
|
device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
|
|
|
|
phy_ethtool_set_wol(netdev->phydev, wol);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
struct phy_device *phydev = net->phydev;
|
|
int ret;
|
|
u32 buf;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = phy_ethtool_get_eee(phydev, edata);
|
|
if (ret < 0)
|
|
goto exit;
|
|
|
|
ret = lan78xx_read_reg(dev, MAC_CR, &buf);
|
|
if (buf & MAC_CR_EEE_EN_) {
|
|
edata->eee_enabled = true;
|
|
edata->eee_active = !!(edata->advertised &
|
|
edata->lp_advertised);
|
|
edata->tx_lpi_enabled = true;
|
|
/* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */
|
|
ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf);
|
|
edata->tx_lpi_timer = buf;
|
|
} else {
|
|
edata->eee_enabled = false;
|
|
edata->eee_active = false;
|
|
edata->tx_lpi_enabled = false;
|
|
edata->tx_lpi_timer = 0;
|
|
}
|
|
|
|
ret = 0;
|
|
exit:
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
int ret;
|
|
u32 buf;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (edata->eee_enabled) {
|
|
ret = lan78xx_read_reg(dev, MAC_CR, &buf);
|
|
buf |= MAC_CR_EEE_EN_;
|
|
ret = lan78xx_write_reg(dev, MAC_CR, buf);
|
|
|
|
phy_ethtool_set_eee(net->phydev, edata);
|
|
|
|
buf = (u32)edata->tx_lpi_timer;
|
|
ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf);
|
|
} else {
|
|
ret = lan78xx_read_reg(dev, MAC_CR, &buf);
|
|
buf &= ~MAC_CR_EEE_EN_;
|
|
ret = lan78xx_write_reg(dev, MAC_CR, buf);
|
|
}
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 lan78xx_get_link(struct net_device *net)
|
|
{
|
|
u32 link;
|
|
|
|
mutex_lock(&net->phydev->lock);
|
|
phy_read_status(net->phydev);
|
|
link = net->phydev->link;
|
|
mutex_unlock(&net->phydev->lock);
|
|
|
|
return link;
|
|
}
|
|
|
|
static void lan78xx_get_drvinfo(struct net_device *net,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
|
|
strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
|
|
usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
|
|
}
|
|
|
|
static u32 lan78xx_get_msglevel(struct net_device *net)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
|
|
return dev->msg_enable;
|
|
}
|
|
|
|
static void lan78xx_set_msglevel(struct net_device *net, u32 level)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
|
|
dev->msg_enable = level;
|
|
}
|
|
|
|
static int lan78xx_get_link_ksettings(struct net_device *net,
|
|
struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
struct phy_device *phydev = net->phydev;
|
|
int ret;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
phy_ethtool_ksettings_get(phydev, cmd);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_set_link_ksettings(struct net_device *net,
|
|
const struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
struct phy_device *phydev = net->phydev;
|
|
int ret = 0;
|
|
int temp;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* change speed & duplex */
|
|
ret = phy_ethtool_ksettings_set(phydev, cmd);
|
|
|
|
if (!cmd->base.autoneg) {
|
|
/* force link down */
|
|
temp = phy_read(phydev, MII_BMCR);
|
|
phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK);
|
|
mdelay(1);
|
|
phy_write(phydev, MII_BMCR, temp);
|
|
}
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_get_pause(struct net_device *net,
|
|
struct ethtool_pauseparam *pause)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
struct phy_device *phydev = net->phydev;
|
|
struct ethtool_link_ksettings ecmd;
|
|
|
|
phy_ethtool_ksettings_get(phydev, &ecmd);
|
|
|
|
pause->autoneg = dev->fc_autoneg;
|
|
|
|
if (dev->fc_request_control & FLOW_CTRL_TX)
|
|
pause->tx_pause = 1;
|
|
|
|
if (dev->fc_request_control & FLOW_CTRL_RX)
|
|
pause->rx_pause = 1;
|
|
}
|
|
|
|
static int lan78xx_set_pause(struct net_device *net,
|
|
struct ethtool_pauseparam *pause)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
struct phy_device *phydev = net->phydev;
|
|
struct ethtool_link_ksettings ecmd;
|
|
int ret;
|
|
|
|
phy_ethtool_ksettings_get(phydev, &ecmd);
|
|
|
|
if (pause->autoneg && !ecmd.base.autoneg) {
|
|
ret = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
dev->fc_request_control = 0;
|
|
if (pause->rx_pause)
|
|
dev->fc_request_control |= FLOW_CTRL_RX;
|
|
|
|
if (pause->tx_pause)
|
|
dev->fc_request_control |= FLOW_CTRL_TX;
|
|
|
|
if (ecmd.base.autoneg) {
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(fc) = { 0, };
|
|
u32 mii_adv;
|
|
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT,
|
|
ecmd.link_modes.advertising);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
|
|
ecmd.link_modes.advertising);
|
|
mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
|
|
mii_adv_to_linkmode_adv_t(fc, mii_adv);
|
|
linkmode_or(ecmd.link_modes.advertising, fc,
|
|
ecmd.link_modes.advertising);
|
|
|
|
phy_ethtool_ksettings_set(phydev, &ecmd);
|
|
}
|
|
|
|
dev->fc_autoneg = pause->autoneg;
|
|
|
|
ret = 0;
|
|
exit:
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_get_regs_len(struct net_device *netdev)
|
|
{
|
|
if (!netdev->phydev)
|
|
return (sizeof(lan78xx_regs));
|
|
else
|
|
return (sizeof(lan78xx_regs) + PHY_REG_SIZE);
|
|
}
|
|
|
|
static void
|
|
lan78xx_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
|
|
void *buf)
|
|
{
|
|
u32 *data = buf;
|
|
int i, j;
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
|
|
/* Read Device/MAC registers */
|
|
for (i = 0; i < ARRAY_SIZE(lan78xx_regs); i++)
|
|
lan78xx_read_reg(dev, lan78xx_regs[i], &data[i]);
|
|
|
|
if (!netdev->phydev)
|
|
return;
|
|
|
|
/* Read PHY registers */
|
|
for (j = 0; j < 32; i++, j++)
|
|
data[i] = phy_read(netdev->phydev, j);
|
|
}
|
|
|
|
static const struct ethtool_ops lan78xx_ethtool_ops = {
|
|
.get_link = lan78xx_get_link,
|
|
.nway_reset = phy_ethtool_nway_reset,
|
|
.get_drvinfo = lan78xx_get_drvinfo,
|
|
.get_msglevel = lan78xx_get_msglevel,
|
|
.set_msglevel = lan78xx_set_msglevel,
|
|
.get_eeprom_len = lan78xx_ethtool_get_eeprom_len,
|
|
.get_eeprom = lan78xx_ethtool_get_eeprom,
|
|
.set_eeprom = lan78xx_ethtool_set_eeprom,
|
|
.get_ethtool_stats = lan78xx_get_stats,
|
|
.get_sset_count = lan78xx_get_sset_count,
|
|
.get_strings = lan78xx_get_strings,
|
|
.get_wol = lan78xx_get_wol,
|
|
.set_wol = lan78xx_set_wol,
|
|
.get_ts_info = ethtool_op_get_ts_info,
|
|
.get_eee = lan78xx_get_eee,
|
|
.set_eee = lan78xx_set_eee,
|
|
.get_pauseparam = lan78xx_get_pause,
|
|
.set_pauseparam = lan78xx_set_pause,
|
|
.get_link_ksettings = lan78xx_get_link_ksettings,
|
|
.set_link_ksettings = lan78xx_set_link_ksettings,
|
|
.get_regs_len = lan78xx_get_regs_len,
|
|
.get_regs = lan78xx_get_regs,
|
|
};
|
|
|
|
static void lan78xx_init_mac_address(struct lan78xx_net *dev)
|
|
{
|
|
u32 addr_lo, addr_hi;
|
|
u8 addr[6];
|
|
|
|
lan78xx_read_reg(dev, RX_ADDRL, &addr_lo);
|
|
lan78xx_read_reg(dev, RX_ADDRH, &addr_hi);
|
|
|
|
addr[0] = addr_lo & 0xFF;
|
|
addr[1] = (addr_lo >> 8) & 0xFF;
|
|
addr[2] = (addr_lo >> 16) & 0xFF;
|
|
addr[3] = (addr_lo >> 24) & 0xFF;
|
|
addr[4] = addr_hi & 0xFF;
|
|
addr[5] = (addr_hi >> 8) & 0xFF;
|
|
|
|
if (!is_valid_ether_addr(addr)) {
|
|
if (!eth_platform_get_mac_address(&dev->udev->dev, addr)) {
|
|
/* valid address present in Device Tree */
|
|
netif_dbg(dev, ifup, dev->net,
|
|
"MAC address read from Device Tree");
|
|
} else if (((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET,
|
|
ETH_ALEN, addr) == 0) ||
|
|
(lan78xx_read_otp(dev, EEPROM_MAC_OFFSET,
|
|
ETH_ALEN, addr) == 0)) &&
|
|
is_valid_ether_addr(addr)) {
|
|
/* eeprom values are valid so use them */
|
|
netif_dbg(dev, ifup, dev->net,
|
|
"MAC address read from EEPROM");
|
|
} else {
|
|
/* generate random MAC */
|
|
eth_random_addr(addr);
|
|
netif_dbg(dev, ifup, dev->net,
|
|
"MAC address set to random addr");
|
|
}
|
|
|
|
addr_lo = addr[0] | (addr[1] << 8) |
|
|
(addr[2] << 16) | (addr[3] << 24);
|
|
addr_hi = addr[4] | (addr[5] << 8);
|
|
|
|
lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
|
|
lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
|
|
}
|
|
|
|
lan78xx_write_reg(dev, MAF_LO(0), addr_lo);
|
|
lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_);
|
|
|
|
eth_hw_addr_set(dev->net, addr);
|
|
}
|
|
|
|
/* MDIO read and write wrappers for phylib */
|
|
static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)
|
|
{
|
|
struct lan78xx_net *dev = bus->priv;
|
|
u32 val, addr;
|
|
int ret;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mutex_lock(&dev->phy_mutex);
|
|
|
|
/* confirm MII not busy */
|
|
ret = lan78xx_phy_wait_not_busy(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
/* set the address, index & direction (read from PHY) */
|
|
addr = mii_access(phy_id, idx, MII_READ);
|
|
ret = lan78xx_write_reg(dev, MII_ACC, addr);
|
|
|
|
ret = lan78xx_phy_wait_not_busy(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
ret = lan78xx_read_reg(dev, MII_DATA, &val);
|
|
|
|
ret = (int)(val & 0xFFFF);
|
|
|
|
done:
|
|
mutex_unlock(&dev->phy_mutex);
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,
|
|
u16 regval)
|
|
{
|
|
struct lan78xx_net *dev = bus->priv;
|
|
u32 val, addr;
|
|
int ret;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mutex_lock(&dev->phy_mutex);
|
|
|
|
/* confirm MII not busy */
|
|
ret = lan78xx_phy_wait_not_busy(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
val = (u32)regval;
|
|
ret = lan78xx_write_reg(dev, MII_DATA, val);
|
|
|
|
/* set the address, index & direction (write to PHY) */
|
|
addr = mii_access(phy_id, idx, MII_WRITE);
|
|
ret = lan78xx_write_reg(dev, MII_ACC, addr);
|
|
|
|
ret = lan78xx_phy_wait_not_busy(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
done:
|
|
mutex_unlock(&dev->phy_mutex);
|
|
usb_autopm_put_interface(dev->intf);
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_mdio_init(struct lan78xx_net *dev)
|
|
{
|
|
struct device_node *node;
|
|
int ret;
|
|
|
|
dev->mdiobus = mdiobus_alloc();
|
|
if (!dev->mdiobus) {
|
|
netdev_err(dev->net, "can't allocate MDIO bus\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
dev->mdiobus->priv = (void *)dev;
|
|
dev->mdiobus->read = lan78xx_mdiobus_read;
|
|
dev->mdiobus->write = lan78xx_mdiobus_write;
|
|
dev->mdiobus->name = "lan78xx-mdiobus";
|
|
dev->mdiobus->parent = &dev->udev->dev;
|
|
|
|
snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
|
|
dev->udev->bus->busnum, dev->udev->devnum);
|
|
|
|
switch (dev->chipid) {
|
|
case ID_REV_CHIP_ID_7800_:
|
|
case ID_REV_CHIP_ID_7850_:
|
|
/* set to internal PHY id */
|
|
dev->mdiobus->phy_mask = ~(1 << 1);
|
|
break;
|
|
case ID_REV_CHIP_ID_7801_:
|
|
/* scan thru PHYAD[2..0] */
|
|
dev->mdiobus->phy_mask = ~(0xFF);
|
|
break;
|
|
}
|
|
|
|
node = of_get_child_by_name(dev->udev->dev.of_node, "mdio");
|
|
ret = of_mdiobus_register(dev->mdiobus, node);
|
|
of_node_put(node);
|
|
if (ret) {
|
|
netdev_err(dev->net, "can't register MDIO bus\n");
|
|
goto exit1;
|
|
}
|
|
|
|
netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id);
|
|
return 0;
|
|
exit1:
|
|
mdiobus_free(dev->mdiobus);
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_remove_mdio(struct lan78xx_net *dev)
|
|
{
|
|
mdiobus_unregister(dev->mdiobus);
|
|
mdiobus_free(dev->mdiobus);
|
|
}
|
|
|
|
static void lan78xx_link_status_change(struct net_device *net)
|
|
{
|
|
struct phy_device *phydev = net->phydev;
|
|
|
|
phy_print_status(phydev);
|
|
}
|
|
|
|
static int irq_map(struct irq_domain *d, unsigned int irq,
|
|
irq_hw_number_t hwirq)
|
|
{
|
|
struct irq_domain_data *data = d->host_data;
|
|
|
|
irq_set_chip_data(irq, data);
|
|
irq_set_chip_and_handler(irq, data->irqchip, data->irq_handler);
|
|
irq_set_noprobe(irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void irq_unmap(struct irq_domain *d, unsigned int irq)
|
|
{
|
|
irq_set_chip_and_handler(irq, NULL, NULL);
|
|
irq_set_chip_data(irq, NULL);
|
|
}
|
|
|
|
static const struct irq_domain_ops chip_domain_ops = {
|
|
.map = irq_map,
|
|
.unmap = irq_unmap,
|
|
};
|
|
|
|
static void lan78xx_irq_mask(struct irq_data *irqd)
|
|
{
|
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
|
|
|
|
data->irqenable &= ~BIT(irqd_to_hwirq(irqd));
|
|
}
|
|
|
|
static void lan78xx_irq_unmask(struct irq_data *irqd)
|
|
{
|
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
|
|
|
|
data->irqenable |= BIT(irqd_to_hwirq(irqd));
|
|
}
|
|
|
|
static void lan78xx_irq_bus_lock(struct irq_data *irqd)
|
|
{
|
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
|
|
|
|
mutex_lock(&data->irq_lock);
|
|
}
|
|
|
|
static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd)
|
|
{
|
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
|
|
struct lan78xx_net *dev =
|
|
container_of(data, struct lan78xx_net, domain_data);
|
|
u32 buf;
|
|
|
|
/* call register access here because irq_bus_lock & irq_bus_sync_unlock
|
|
* are only two callbacks executed in non-atomic contex.
|
|
*/
|
|
lan78xx_read_reg(dev, INT_EP_CTL, &buf);
|
|
if (buf != data->irqenable)
|
|
lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable);
|
|
|
|
mutex_unlock(&data->irq_lock);
|
|
}
|
|
|
|
static struct irq_chip lan78xx_irqchip = {
|
|
.name = "lan78xx-irqs",
|
|
.irq_mask = lan78xx_irq_mask,
|
|
.irq_unmask = lan78xx_irq_unmask,
|
|
.irq_bus_lock = lan78xx_irq_bus_lock,
|
|
.irq_bus_sync_unlock = lan78xx_irq_bus_sync_unlock,
|
|
};
|
|
|
|
static int lan78xx_setup_irq_domain(struct lan78xx_net *dev)
|
|
{
|
|
struct device_node *of_node;
|
|
struct irq_domain *irqdomain;
|
|
unsigned int irqmap = 0;
|
|
u32 buf;
|
|
int ret = 0;
|
|
|
|
of_node = dev->udev->dev.parent->of_node;
|
|
|
|
mutex_init(&dev->domain_data.irq_lock);
|
|
|
|
lan78xx_read_reg(dev, INT_EP_CTL, &buf);
|
|
dev->domain_data.irqenable = buf;
|
|
|
|
dev->domain_data.irqchip = &lan78xx_irqchip;
|
|
dev->domain_data.irq_handler = handle_simple_irq;
|
|
|
|
irqdomain = irq_domain_add_simple(of_node, MAX_INT_EP, 0,
|
|
&chip_domain_ops, &dev->domain_data);
|
|
if (irqdomain) {
|
|
/* create mapping for PHY interrupt */
|
|
irqmap = irq_create_mapping(irqdomain, INT_EP_PHY);
|
|
if (!irqmap) {
|
|
irq_domain_remove(irqdomain);
|
|
|
|
irqdomain = NULL;
|
|
ret = -EINVAL;
|
|
}
|
|
} else {
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
dev->domain_data.irqdomain = irqdomain;
|
|
dev->domain_data.phyirq = irqmap;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_remove_irq_domain(struct lan78xx_net *dev)
|
|
{
|
|
if (dev->domain_data.phyirq > 0) {
|
|
irq_dispose_mapping(dev->domain_data.phyirq);
|
|
|
|
if (dev->domain_data.irqdomain)
|
|
irq_domain_remove(dev->domain_data.irqdomain);
|
|
}
|
|
dev->domain_data.phyirq = 0;
|
|
dev->domain_data.irqdomain = NULL;
|
|
}
|
|
|
|
static int lan8835_fixup(struct phy_device *phydev)
|
|
{
|
|
int buf;
|
|
struct lan78xx_net *dev = netdev_priv(phydev->attached_dev);
|
|
|
|
/* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */
|
|
buf = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x8010);
|
|
buf &= ~0x1800;
|
|
buf |= 0x0800;
|
|
phy_write_mmd(phydev, MDIO_MMD_PCS, 0x8010, buf);
|
|
|
|
/* RGMII MAC TXC Delay Enable */
|
|
lan78xx_write_reg(dev, MAC_RGMII_ID,
|
|
MAC_RGMII_ID_TXC_DELAY_EN_);
|
|
|
|
/* RGMII TX DLL Tune Adjust */
|
|
lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00);
|
|
|
|
dev->interface = PHY_INTERFACE_MODE_RGMII_TXID;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int ksz9031rnx_fixup(struct phy_device *phydev)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(phydev->attached_dev);
|
|
|
|
/* Micrel9301RNX PHY configuration */
|
|
/* RGMII Control Signal Pad Skew */
|
|
phy_write_mmd(phydev, MDIO_MMD_WIS, 4, 0x0077);
|
|
/* RGMII RX Data Pad Skew */
|
|
phy_write_mmd(phydev, MDIO_MMD_WIS, 5, 0x7777);
|
|
/* RGMII RX Clock Pad Skew */
|
|
phy_write_mmd(phydev, MDIO_MMD_WIS, 8, 0x1FF);
|
|
|
|
dev->interface = PHY_INTERFACE_MODE_RGMII_RXID;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static struct phy_device *lan7801_phy_init(struct lan78xx_net *dev)
|
|
{
|
|
u32 buf;
|
|
int ret;
|
|
struct fixed_phy_status fphy_status = {
|
|
.link = 1,
|
|
.speed = SPEED_1000,
|
|
.duplex = DUPLEX_FULL,
|
|
};
|
|
struct phy_device *phydev;
|
|
|
|
phydev = phy_find_first(dev->mdiobus);
|
|
if (!phydev) {
|
|
netdev_dbg(dev->net, "PHY Not Found!! Registering Fixed PHY\n");
|
|
phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);
|
|
if (IS_ERR(phydev)) {
|
|
netdev_err(dev->net, "No PHY/fixed_PHY found\n");
|
|
return NULL;
|
|
}
|
|
netdev_dbg(dev->net, "Registered FIXED PHY\n");
|
|
dev->interface = PHY_INTERFACE_MODE_RGMII;
|
|
ret = lan78xx_write_reg(dev, MAC_RGMII_ID,
|
|
MAC_RGMII_ID_TXC_DELAY_EN_);
|
|
ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00);
|
|
ret = lan78xx_read_reg(dev, HW_CFG, &buf);
|
|
buf |= HW_CFG_CLK125_EN_;
|
|
buf |= HW_CFG_REFCLK25_EN_;
|
|
ret = lan78xx_write_reg(dev, HW_CFG, buf);
|
|
} else {
|
|
if (!phydev->drv) {
|
|
netdev_err(dev->net, "no PHY driver found\n");
|
|
return NULL;
|
|
}
|
|
dev->interface = PHY_INTERFACE_MODE_RGMII;
|
|
/* external PHY fixup for KSZ9031RNX */
|
|
ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0,
|
|
ksz9031rnx_fixup);
|
|
if (ret < 0) {
|
|
netdev_err(dev->net, "Failed to register fixup for PHY_KSZ9031RNX\n");
|
|
return NULL;
|
|
}
|
|
/* external PHY fixup for LAN8835 */
|
|
ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0,
|
|
lan8835_fixup);
|
|
if (ret < 0) {
|
|
netdev_err(dev->net, "Failed to register fixup for PHY_LAN8835\n");
|
|
return NULL;
|
|
}
|
|
/* add more external PHY fixup here if needed */
|
|
|
|
phydev->is_internal = false;
|
|
}
|
|
return phydev;
|
|
}
|
|
|
|
static int lan78xx_phy_init(struct lan78xx_net *dev)
|
|
{
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(fc) = { 0, };
|
|
int ret;
|
|
u32 mii_adv;
|
|
struct phy_device *phydev;
|
|
|
|
switch (dev->chipid) {
|
|
case ID_REV_CHIP_ID_7801_:
|
|
phydev = lan7801_phy_init(dev);
|
|
if (!phydev) {
|
|
netdev_err(dev->net, "lan7801: PHY Init Failed");
|
|
return -EIO;
|
|
}
|
|
break;
|
|
|
|
case ID_REV_CHIP_ID_7800_:
|
|
case ID_REV_CHIP_ID_7850_:
|
|
phydev = phy_find_first(dev->mdiobus);
|
|
if (!phydev) {
|
|
netdev_err(dev->net, "no PHY found\n");
|
|
return -EIO;
|
|
}
|
|
phydev->is_internal = true;
|
|
dev->interface = PHY_INTERFACE_MODE_GMII;
|
|
break;
|
|
|
|
default:
|
|
netdev_err(dev->net, "Unknown CHIP ID found\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* if phyirq is not set, use polling mode in phylib */
|
|
if (dev->domain_data.phyirq > 0)
|
|
phydev->irq = dev->domain_data.phyirq;
|
|
else
|
|
phydev->irq = PHY_POLL;
|
|
netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq);
|
|
|
|
/* set to AUTOMDIX */
|
|
phydev->mdix = ETH_TP_MDI_AUTO;
|
|
|
|
ret = phy_connect_direct(dev->net, phydev,
|
|
lan78xx_link_status_change,
|
|
dev->interface);
|
|
if (ret) {
|
|
netdev_err(dev->net, "can't attach PHY to %s\n",
|
|
dev->mdiobus->id);
|
|
if (dev->chipid == ID_REV_CHIP_ID_7801_) {
|
|
if (phy_is_pseudo_fixed_link(phydev)) {
|
|
fixed_phy_unregister(phydev);
|
|
} else {
|
|
phy_unregister_fixup_for_uid(PHY_KSZ9031RNX,
|
|
0xfffffff0);
|
|
phy_unregister_fixup_for_uid(PHY_LAN8835,
|
|
0xfffffff0);
|
|
}
|
|
}
|
|
return -EIO;
|
|
}
|
|
|
|
/* MAC doesn't support 1000T Half */
|
|
phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
|
|
|
|
/* support both flow controls */
|
|
dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT,
|
|
phydev->advertising);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
|
|
phydev->advertising);
|
|
mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
|
|
mii_adv_to_linkmode_adv_t(fc, mii_adv);
|
|
linkmode_or(phydev->advertising, fc, phydev->advertising);
|
|
|
|
if (phydev->mdio.dev.of_node) {
|
|
u32 reg;
|
|
int len;
|
|
|
|
len = of_property_count_elems_of_size(phydev->mdio.dev.of_node,
|
|
"microchip,led-modes",
|
|
sizeof(u32));
|
|
if (len >= 0) {
|
|
/* Ensure the appropriate LEDs are enabled */
|
|
lan78xx_read_reg(dev, HW_CFG, ®);
|
|
reg &= ~(HW_CFG_LED0_EN_ |
|
|
HW_CFG_LED1_EN_ |
|
|
HW_CFG_LED2_EN_ |
|
|
HW_CFG_LED3_EN_);
|
|
reg |= (len > 0) * HW_CFG_LED0_EN_ |
|
|
(len > 1) * HW_CFG_LED1_EN_ |
|
|
(len > 2) * HW_CFG_LED2_EN_ |
|
|
(len > 3) * HW_CFG_LED3_EN_;
|
|
lan78xx_write_reg(dev, HW_CFG, reg);
|
|
}
|
|
}
|
|
|
|
genphy_config_aneg(phydev);
|
|
|
|
dev->fc_autoneg = phydev->autoneg;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size)
|
|
{
|
|
u32 buf;
|
|
bool rxenabled;
|
|
|
|
lan78xx_read_reg(dev, MAC_RX, &buf);
|
|
|
|
rxenabled = ((buf & MAC_RX_RXEN_) != 0);
|
|
|
|
if (rxenabled) {
|
|
buf &= ~MAC_RX_RXEN_;
|
|
lan78xx_write_reg(dev, MAC_RX, buf);
|
|
}
|
|
|
|
/* add 4 to size for FCS */
|
|
buf &= ~MAC_RX_MAX_SIZE_MASK_;
|
|
buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
|
|
|
|
lan78xx_write_reg(dev, MAC_RX, buf);
|
|
|
|
if (rxenabled) {
|
|
buf |= MAC_RX_RXEN_;
|
|
lan78xx_write_reg(dev, MAC_RX, buf);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q)
|
|
{
|
|
struct sk_buff *skb;
|
|
unsigned long flags;
|
|
int count = 0;
|
|
|
|
spin_lock_irqsave(&q->lock, flags);
|
|
while (!skb_queue_empty(q)) {
|
|
struct skb_data *entry;
|
|
struct urb *urb;
|
|
int ret;
|
|
|
|
skb_queue_walk(q, skb) {
|
|
entry = (struct skb_data *)skb->cb;
|
|
if (entry->state != unlink_start)
|
|
goto found;
|
|
}
|
|
break;
|
|
found:
|
|
entry->state = unlink_start;
|
|
urb = entry->urb;
|
|
|
|
/* Get reference count of the URB to avoid it to be
|
|
* freed during usb_unlink_urb, which may trigger
|
|
* use-after-free problem inside usb_unlink_urb since
|
|
* usb_unlink_urb is always racing with .complete
|
|
* handler(include defer_bh).
|
|
*/
|
|
usb_get_urb(urb);
|
|
spin_unlock_irqrestore(&q->lock, flags);
|
|
/* during some PM-driven resume scenarios,
|
|
* these (async) unlinks complete immediately
|
|
*/
|
|
ret = usb_unlink_urb(urb);
|
|
if (ret != -EINPROGRESS && ret != 0)
|
|
netdev_dbg(dev->net, "unlink urb err, %d\n", ret);
|
|
else
|
|
count++;
|
|
usb_put_urb(urb);
|
|
spin_lock_irqsave(&q->lock, flags);
|
|
}
|
|
spin_unlock_irqrestore(&q->lock, flags);
|
|
return count;
|
|
}
|
|
|
|
static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
int max_frame_len = RX_MAX_FRAME_LEN(new_mtu);
|
|
int ret;
|
|
|
|
/* no second zero-length packet read wanted after mtu-sized packets */
|
|
if ((max_frame_len % dev->maxpacket) == 0)
|
|
return -EDOM;
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_set_rx_max_frame_length(dev, max_frame_len);
|
|
if (!ret)
|
|
netdev->mtu = new_mtu;
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_set_mac_addr(struct net_device *netdev, void *p)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
struct sockaddr *addr = p;
|
|
u32 addr_lo, addr_hi;
|
|
|
|
if (netif_running(netdev))
|
|
return -EBUSY;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
eth_hw_addr_set(netdev, addr->sa_data);
|
|
|
|
addr_lo = netdev->dev_addr[0] |
|
|
netdev->dev_addr[1] << 8 |
|
|
netdev->dev_addr[2] << 16 |
|
|
netdev->dev_addr[3] << 24;
|
|
addr_hi = netdev->dev_addr[4] |
|
|
netdev->dev_addr[5] << 8;
|
|
|
|
lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
|
|
lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
|
|
|
|
/* Added to support MAC address changes */
|
|
lan78xx_write_reg(dev, MAF_LO(0), addr_lo);
|
|
lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Enable or disable Rx checksum offload engine */
|
|
static int lan78xx_set_features(struct net_device *netdev,
|
|
netdev_features_t features)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
|
|
|
|
if (features & NETIF_F_RXCSUM) {
|
|
pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_;
|
|
pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_;
|
|
} else {
|
|
pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_);
|
|
pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_);
|
|
}
|
|
|
|
if (features & NETIF_F_HW_VLAN_CTAG_RX)
|
|
pdata->rfe_ctl |= RFE_CTL_VLAN_STRIP_;
|
|
else
|
|
pdata->rfe_ctl &= ~RFE_CTL_VLAN_STRIP_;
|
|
|
|
if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
|
|
pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_;
|
|
else
|
|
pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_;
|
|
|
|
spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
|
|
|
|
lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void lan78xx_deferred_vlan_write(struct work_struct *param)
|
|
{
|
|
struct lan78xx_priv *pdata =
|
|
container_of(param, struct lan78xx_priv, set_vlan);
|
|
struct lan78xx_net *dev = pdata->dev;
|
|
|
|
lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0,
|
|
DP_SEL_VHF_VLAN_LEN, pdata->vlan_table);
|
|
}
|
|
|
|
static int lan78xx_vlan_rx_add_vid(struct net_device *netdev,
|
|
__be16 proto, u16 vid)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
u16 vid_bit_index;
|
|
u16 vid_dword_index;
|
|
|
|
vid_dword_index = (vid >> 5) & 0x7F;
|
|
vid_bit_index = vid & 0x1F;
|
|
|
|
pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index);
|
|
|
|
/* defer register writes to a sleepable context */
|
|
schedule_work(&pdata->set_vlan);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev,
|
|
__be16 proto, u16 vid)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
u16 vid_bit_index;
|
|
u16 vid_dword_index;
|
|
|
|
vid_dword_index = (vid >> 5) & 0x7F;
|
|
vid_bit_index = vid & 0x1F;
|
|
|
|
pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index);
|
|
|
|
/* defer register writes to a sleepable context */
|
|
schedule_work(&pdata->set_vlan);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void lan78xx_init_ltm(struct lan78xx_net *dev)
|
|
{
|
|
int ret;
|
|
u32 buf;
|
|
u32 regs[6] = { 0 };
|
|
|
|
ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
|
|
if (buf & USB_CFG1_LTM_ENABLE_) {
|
|
u8 temp[2];
|
|
/* Get values from EEPROM first */
|
|
if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) {
|
|
if (temp[0] == 24) {
|
|
ret = lan78xx_read_raw_eeprom(dev,
|
|
temp[1] * 2,
|
|
24,
|
|
(u8 *)regs);
|
|
if (ret < 0)
|
|
return;
|
|
}
|
|
} else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) {
|
|
if (temp[0] == 24) {
|
|
ret = lan78xx_read_raw_otp(dev,
|
|
temp[1] * 2,
|
|
24,
|
|
(u8 *)regs);
|
|
if (ret < 0)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]);
|
|
lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]);
|
|
lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]);
|
|
lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]);
|
|
lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]);
|
|
lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]);
|
|
}
|
|
|
|
static int lan78xx_urb_config_init(struct lan78xx_net *dev)
|
|
{
|
|
int result = 0;
|
|
|
|
switch (dev->udev->speed) {
|
|
case USB_SPEED_SUPER:
|
|
dev->rx_urb_size = RX_SS_URB_SIZE;
|
|
dev->tx_urb_size = TX_SS_URB_SIZE;
|
|
dev->n_rx_urbs = RX_SS_URB_NUM;
|
|
dev->n_tx_urbs = TX_SS_URB_NUM;
|
|
dev->bulk_in_delay = SS_BULK_IN_DELAY;
|
|
dev->burst_cap = SS_BURST_CAP_SIZE / SS_USB_PKT_SIZE;
|
|
break;
|
|
case USB_SPEED_HIGH:
|
|
dev->rx_urb_size = RX_HS_URB_SIZE;
|
|
dev->tx_urb_size = TX_HS_URB_SIZE;
|
|
dev->n_rx_urbs = RX_HS_URB_NUM;
|
|
dev->n_tx_urbs = TX_HS_URB_NUM;
|
|
dev->bulk_in_delay = HS_BULK_IN_DELAY;
|
|
dev->burst_cap = HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
|
|
break;
|
|
case USB_SPEED_FULL:
|
|
dev->rx_urb_size = RX_FS_URB_SIZE;
|
|
dev->tx_urb_size = TX_FS_URB_SIZE;
|
|
dev->n_rx_urbs = RX_FS_URB_NUM;
|
|
dev->n_tx_urbs = TX_FS_URB_NUM;
|
|
dev->bulk_in_delay = FS_BULK_IN_DELAY;
|
|
dev->burst_cap = FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
|
|
break;
|
|
default:
|
|
netdev_warn(dev->net, "USB bus speed not supported\n");
|
|
result = -EIO;
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static int lan78xx_start_hw(struct lan78xx_net *dev, u32 reg, u32 hw_enable)
|
|
{
|
|
return lan78xx_update_reg(dev, reg, hw_enable, hw_enable);
|
|
}
|
|
|
|
static int lan78xx_stop_hw(struct lan78xx_net *dev, u32 reg, u32 hw_enabled,
|
|
u32 hw_disabled)
|
|
{
|
|
unsigned long timeout;
|
|
bool stopped = true;
|
|
int ret;
|
|
u32 buf;
|
|
|
|
/* Stop the h/w block (if not already stopped) */
|
|
|
|
ret = lan78xx_read_reg(dev, reg, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (buf & hw_enabled) {
|
|
buf &= ~hw_enabled;
|
|
|
|
ret = lan78xx_write_reg(dev, reg, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
stopped = false;
|
|
timeout = jiffies + HW_DISABLE_TIMEOUT;
|
|
do {
|
|
ret = lan78xx_read_reg(dev, reg, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (buf & hw_disabled)
|
|
stopped = true;
|
|
else
|
|
msleep(HW_DISABLE_DELAY_MS);
|
|
} while (!stopped && !time_after(jiffies, timeout));
|
|
}
|
|
|
|
ret = stopped ? 0 : -ETIME;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_flush_fifo(struct lan78xx_net *dev, u32 reg, u32 fifo_flush)
|
|
{
|
|
return lan78xx_update_reg(dev, reg, fifo_flush, fifo_flush);
|
|
}
|
|
|
|
static int lan78xx_start_tx_path(struct lan78xx_net *dev)
|
|
{
|
|
int ret;
|
|
|
|
netif_dbg(dev, drv, dev->net, "start tx path");
|
|
|
|
/* Start the MAC transmitter */
|
|
|
|
ret = lan78xx_start_hw(dev, MAC_TX, MAC_TX_TXEN_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Start the Tx FIFO */
|
|
|
|
ret = lan78xx_start_hw(dev, FCT_TX_CTL, FCT_TX_CTL_EN_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_stop_tx_path(struct lan78xx_net *dev)
|
|
{
|
|
int ret;
|
|
|
|
netif_dbg(dev, drv, dev->net, "stop tx path");
|
|
|
|
/* Stop the Tx FIFO */
|
|
|
|
ret = lan78xx_stop_hw(dev, FCT_TX_CTL, FCT_TX_CTL_EN_, FCT_TX_CTL_DIS_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Stop the MAC transmitter */
|
|
|
|
ret = lan78xx_stop_hw(dev, MAC_TX, MAC_TX_TXEN_, MAC_TX_TXD_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The caller must ensure the Tx path is stopped before calling
|
|
* lan78xx_flush_tx_fifo().
|
|
*/
|
|
static int lan78xx_flush_tx_fifo(struct lan78xx_net *dev)
|
|
{
|
|
return lan78xx_flush_fifo(dev, FCT_TX_CTL, FCT_TX_CTL_RST_);
|
|
}
|
|
|
|
static int lan78xx_start_rx_path(struct lan78xx_net *dev)
|
|
{
|
|
int ret;
|
|
|
|
netif_dbg(dev, drv, dev->net, "start rx path");
|
|
|
|
/* Start the Rx FIFO */
|
|
|
|
ret = lan78xx_start_hw(dev, FCT_RX_CTL, FCT_RX_CTL_EN_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Start the MAC receiver*/
|
|
|
|
ret = lan78xx_start_hw(dev, MAC_RX, MAC_RX_RXEN_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan78xx_stop_rx_path(struct lan78xx_net *dev)
|
|
{
|
|
int ret;
|
|
|
|
netif_dbg(dev, drv, dev->net, "stop rx path");
|
|
|
|
/* Stop the MAC receiver */
|
|
|
|
ret = lan78xx_stop_hw(dev, MAC_RX, MAC_RX_RXEN_, MAC_RX_RXD_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Stop the Rx FIFO */
|
|
|
|
ret = lan78xx_stop_hw(dev, FCT_RX_CTL, FCT_RX_CTL_EN_, FCT_RX_CTL_DIS_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The caller must ensure the Rx path is stopped before calling
|
|
* lan78xx_flush_rx_fifo().
|
|
*/
|
|
static int lan78xx_flush_rx_fifo(struct lan78xx_net *dev)
|
|
{
|
|
return lan78xx_flush_fifo(dev, FCT_RX_CTL, FCT_RX_CTL_RST_);
|
|
}
|
|
|
|
static int lan78xx_reset(struct lan78xx_net *dev)
|
|
{
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
unsigned long timeout;
|
|
int ret;
|
|
u32 buf;
|
|
u8 sig;
|
|
|
|
ret = lan78xx_read_reg(dev, HW_CFG, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= HW_CFG_LRST_;
|
|
|
|
ret = lan78xx_write_reg(dev, HW_CFG, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
timeout = jiffies + HZ;
|
|
do {
|
|
mdelay(1);
|
|
ret = lan78xx_read_reg(dev, HW_CFG, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (time_after(jiffies, timeout)) {
|
|
netdev_warn(dev->net,
|
|
"timeout on completion of LiteReset");
|
|
ret = -ETIMEDOUT;
|
|
return ret;
|
|
}
|
|
} while (buf & HW_CFG_LRST_);
|
|
|
|
lan78xx_init_mac_address(dev);
|
|
|
|
/* save DEVID for later usage */
|
|
ret = lan78xx_read_reg(dev, ID_REV, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16;
|
|
dev->chiprev = buf & ID_REV_CHIP_REV_MASK_;
|
|
|
|
/* Respond to the IN token with a NAK */
|
|
ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= USB_CFG_BIR_;
|
|
|
|
ret = lan78xx_write_reg(dev, USB_CFG0, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Init LTM */
|
|
lan78xx_init_ltm(dev);
|
|
|
|
ret = lan78xx_write_reg(dev, BURST_CAP, dev->burst_cap);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, BULK_IN_DLY, dev->bulk_in_delay);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_read_reg(dev, HW_CFG, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= HW_CFG_MEF_;
|
|
|
|
ret = lan78xx_write_reg(dev, HW_CFG, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= USB_CFG_BCE_;
|
|
|
|
ret = lan78xx_write_reg(dev, USB_CFG0, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set FIFO sizes */
|
|
buf = (MAX_RX_FIFO_SIZE - 512) / 512;
|
|
|
|
ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf = (MAX_TX_FIFO_SIZE - 512) / 512;
|
|
|
|
ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, FLOW, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, FCT_FLOW, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Don't need rfe_ctl_lock during initialisation */
|
|
ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_;
|
|
|
|
ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Enable or disable checksum offload engines */
|
|
ret = lan78xx_set_features(dev->net, dev->net->features);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
lan78xx_set_multicast(dev->net);
|
|
|
|
/* reset PHY */
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= PMT_CTL_PHY_RST_;
|
|
|
|
ret = lan78xx_write_reg(dev, PMT_CTL, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
timeout = jiffies + HZ;
|
|
do {
|
|
mdelay(1);
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (time_after(jiffies, timeout)) {
|
|
netdev_warn(dev->net, "timeout waiting for PHY Reset");
|
|
ret = -ETIMEDOUT;
|
|
return ret;
|
|
}
|
|
} while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_));
|
|
|
|
ret = lan78xx_read_reg(dev, MAC_CR, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* LAN7801 only has RGMII mode */
|
|
if (dev->chipid == ID_REV_CHIP_ID_7801_)
|
|
buf &= ~MAC_CR_GMII_EN_;
|
|
|
|
if (dev->chipid == ID_REV_CHIP_ID_7800_) {
|
|
ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig);
|
|
if (!ret && sig != EEPROM_INDICATOR) {
|
|
/* Implies there is no external eeprom. Set mac speed */
|
|
netdev_info(dev->net, "No External EEPROM. Setting MAC Speed\n");
|
|
buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
|
|
}
|
|
}
|
|
ret = lan78xx_write_reg(dev, MAC_CR, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_set_rx_max_frame_length(dev,
|
|
RX_MAX_FRAME_LEN(dev->net->mtu));
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_init_stats(struct lan78xx_net *dev)
|
|
{
|
|
u32 *p;
|
|
int i;
|
|
|
|
/* initialize for stats update
|
|
* some counters are 20bits and some are 32bits
|
|
*/
|
|
p = (u32 *)&dev->stats.rollover_max;
|
|
for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++)
|
|
p[i] = 0xFFFFF;
|
|
|
|
dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF;
|
|
dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF;
|
|
|
|
set_bit(EVENT_STAT_UPDATE, &dev->flags);
|
|
}
|
|
|
|
static int lan78xx_open(struct net_device *net)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
int ret;
|
|
|
|
netif_dbg(dev, ifup, dev->net, "open device");
|
|
|
|
ret = usb_autopm_get_interface(dev->intf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mutex_lock(&dev->dev_mutex);
|
|
|
|
phy_start(net->phydev);
|
|
|
|
netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
|
|
|
|
/* for Link Check */
|
|
if (dev->urb_intr) {
|
|
ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
|
|
if (ret < 0) {
|
|
netif_err(dev, ifup, dev->net,
|
|
"intr submit %d\n", ret);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
ret = lan78xx_flush_rx_fifo(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
ret = lan78xx_flush_tx_fifo(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
ret = lan78xx_start_tx_path(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
ret = lan78xx_start_rx_path(dev);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
lan78xx_init_stats(dev);
|
|
|
|
set_bit(EVENT_DEV_OPEN, &dev->flags);
|
|
|
|
netif_start_queue(net);
|
|
|
|
dev->link_on = false;
|
|
|
|
napi_enable(&dev->napi);
|
|
|
|
lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
|
|
done:
|
|
mutex_unlock(&dev->dev_mutex);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_terminate_urbs(struct lan78xx_net *dev)
|
|
{
|
|
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup);
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
int temp;
|
|
|
|
/* ensure there are no more active urbs */
|
|
add_wait_queue(&unlink_wakeup, &wait);
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
dev->wait = &unlink_wakeup;
|
|
temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq);
|
|
|
|
/* maybe wait for deletions to finish. */
|
|
while (!skb_queue_empty(&dev->rxq) ||
|
|
!skb_queue_empty(&dev->txq)) {
|
|
schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS));
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
netif_dbg(dev, ifdown, dev->net,
|
|
"waited for %d urb completions", temp);
|
|
}
|
|
set_current_state(TASK_RUNNING);
|
|
dev->wait = NULL;
|
|
remove_wait_queue(&unlink_wakeup, &wait);
|
|
|
|
/* empty Rx done, Rx overflow and Tx pend queues
|
|
*/
|
|
while (!skb_queue_empty(&dev->rxq_done)) {
|
|
struct sk_buff *skb = skb_dequeue(&dev->rxq_done);
|
|
|
|
lan78xx_release_rx_buf(dev, skb);
|
|
}
|
|
|
|
skb_queue_purge(&dev->rxq_overflow);
|
|
skb_queue_purge(&dev->txq_pend);
|
|
}
|
|
|
|
static int lan78xx_stop(struct net_device *net)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
|
|
netif_dbg(dev, ifup, dev->net, "stop device");
|
|
|
|
mutex_lock(&dev->dev_mutex);
|
|
|
|
if (timer_pending(&dev->stat_monitor))
|
|
del_timer_sync(&dev->stat_monitor);
|
|
|
|
clear_bit(EVENT_DEV_OPEN, &dev->flags);
|
|
netif_stop_queue(net);
|
|
napi_disable(&dev->napi);
|
|
|
|
lan78xx_terminate_urbs(dev);
|
|
|
|
netif_info(dev, ifdown, dev->net,
|
|
"stop stats: rx/tx %lu/%lu, errs %lu/%lu\n",
|
|
net->stats.rx_packets, net->stats.tx_packets,
|
|
net->stats.rx_errors, net->stats.tx_errors);
|
|
|
|
/* ignore errors that occur stopping the Tx and Rx data paths */
|
|
lan78xx_stop_tx_path(dev);
|
|
lan78xx_stop_rx_path(dev);
|
|
|
|
if (net->phydev)
|
|
phy_stop(net->phydev);
|
|
|
|
usb_kill_urb(dev->urb_intr);
|
|
|
|
/* deferred work (task, timer, softirq) must also stop.
|
|
* can't flush_scheduled_work() until we drop rtnl (later),
|
|
* else workers could deadlock; so make workers a NOP.
|
|
*/
|
|
clear_bit(EVENT_TX_HALT, &dev->flags);
|
|
clear_bit(EVENT_RX_HALT, &dev->flags);
|
|
clear_bit(EVENT_LINK_RESET, &dev->flags);
|
|
clear_bit(EVENT_STAT_UPDATE, &dev->flags);
|
|
|
|
cancel_delayed_work_sync(&dev->wq);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
mutex_unlock(&dev->dev_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb,
|
|
struct sk_buff_head *list, enum skb_state state)
|
|
{
|
|
unsigned long flags;
|
|
enum skb_state old_state;
|
|
struct skb_data *entry = (struct skb_data *)skb->cb;
|
|
|
|
spin_lock_irqsave(&list->lock, flags);
|
|
old_state = entry->state;
|
|
entry->state = state;
|
|
|
|
__skb_unlink(skb, list);
|
|
spin_unlock(&list->lock);
|
|
spin_lock(&dev->rxq_done.lock);
|
|
|
|
__skb_queue_tail(&dev->rxq_done, skb);
|
|
if (skb_queue_len(&dev->rxq_done) == 1)
|
|
napi_schedule(&dev->napi);
|
|
|
|
spin_unlock_irqrestore(&dev->rxq_done.lock, flags);
|
|
|
|
return old_state;
|
|
}
|
|
|
|
static void tx_complete(struct urb *urb)
|
|
{
|
|
struct sk_buff *skb = (struct sk_buff *)urb->context;
|
|
struct skb_data *entry = (struct skb_data *)skb->cb;
|
|
struct lan78xx_net *dev = entry->dev;
|
|
|
|
if (urb->status == 0) {
|
|
dev->net->stats.tx_packets += entry->num_of_packet;
|
|
dev->net->stats.tx_bytes += entry->length;
|
|
} else {
|
|
dev->net->stats.tx_errors += entry->num_of_packet;
|
|
|
|
switch (urb->status) {
|
|
case -EPIPE:
|
|
lan78xx_defer_kevent(dev, EVENT_TX_HALT);
|
|
break;
|
|
|
|
/* software-driven interface shutdown */
|
|
case -ECONNRESET:
|
|
case -ESHUTDOWN:
|
|
netif_dbg(dev, tx_err, dev->net,
|
|
"tx err interface gone %d\n",
|
|
entry->urb->status);
|
|
break;
|
|
|
|
case -EPROTO:
|
|
case -ETIME:
|
|
case -EILSEQ:
|
|
netif_stop_queue(dev->net);
|
|
netif_dbg(dev, tx_err, dev->net,
|
|
"tx err queue stopped %d\n",
|
|
entry->urb->status);
|
|
break;
|
|
default:
|
|
netif_dbg(dev, tx_err, dev->net,
|
|
"unknown tx err %d\n",
|
|
entry->urb->status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
usb_autopm_put_interface_async(dev->intf);
|
|
|
|
skb_unlink(skb, &dev->txq);
|
|
|
|
lan78xx_release_tx_buf(dev, skb);
|
|
|
|
/* Re-schedule NAPI if Tx data pending but no URBs in progress.
|
|
*/
|
|
if (skb_queue_empty(&dev->txq) &&
|
|
!skb_queue_empty(&dev->txq_pend))
|
|
napi_schedule(&dev->napi);
|
|
}
|
|
|
|
static void lan78xx_queue_skb(struct sk_buff_head *list,
|
|
struct sk_buff *newsk, enum skb_state state)
|
|
{
|
|
struct skb_data *entry = (struct skb_data *)newsk->cb;
|
|
|
|
__skb_queue_tail(list, newsk);
|
|
entry->state = state;
|
|
}
|
|
|
|
static unsigned int lan78xx_tx_urb_space(struct lan78xx_net *dev)
|
|
{
|
|
return skb_queue_len(&dev->txq_free) * dev->tx_urb_size;
|
|
}
|
|
|
|
static unsigned int lan78xx_tx_pend_data_len(struct lan78xx_net *dev)
|
|
{
|
|
return dev->tx_pend_data_len;
|
|
}
|
|
|
|
static void lan78xx_tx_pend_skb_add(struct lan78xx_net *dev,
|
|
struct sk_buff *skb,
|
|
unsigned int *tx_pend_data_len)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->txq_pend.lock, flags);
|
|
|
|
__skb_queue_tail(&dev->txq_pend, skb);
|
|
|
|
dev->tx_pend_data_len += skb->len;
|
|
*tx_pend_data_len = dev->tx_pend_data_len;
|
|
|
|
spin_unlock_irqrestore(&dev->txq_pend.lock, flags);
|
|
}
|
|
|
|
static void lan78xx_tx_pend_skb_head_add(struct lan78xx_net *dev,
|
|
struct sk_buff *skb,
|
|
unsigned int *tx_pend_data_len)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->txq_pend.lock, flags);
|
|
|
|
__skb_queue_head(&dev->txq_pend, skb);
|
|
|
|
dev->tx_pend_data_len += skb->len;
|
|
*tx_pend_data_len = dev->tx_pend_data_len;
|
|
|
|
spin_unlock_irqrestore(&dev->txq_pend.lock, flags);
|
|
}
|
|
|
|
static void lan78xx_tx_pend_skb_get(struct lan78xx_net *dev,
|
|
struct sk_buff **skb,
|
|
unsigned int *tx_pend_data_len)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->txq_pend.lock, flags);
|
|
|
|
*skb = __skb_dequeue(&dev->txq_pend);
|
|
if (*skb)
|
|
dev->tx_pend_data_len -= (*skb)->len;
|
|
*tx_pend_data_len = dev->tx_pend_data_len;
|
|
|
|
spin_unlock_irqrestore(&dev->txq_pend.lock, flags);
|
|
}
|
|
|
|
static netdev_tx_t
|
|
lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
unsigned int tx_pend_data_len;
|
|
|
|
if (test_bit(EVENT_DEV_ASLEEP, &dev->flags))
|
|
schedule_delayed_work(&dev->wq, 0);
|
|
|
|
skb_tx_timestamp(skb);
|
|
|
|
lan78xx_tx_pend_skb_add(dev, skb, &tx_pend_data_len);
|
|
|
|
/* Set up a Tx URB if none is in progress */
|
|
|
|
if (skb_queue_empty(&dev->txq))
|
|
napi_schedule(&dev->napi);
|
|
|
|
/* Stop stack Tx queue if we have enough data to fill
|
|
* all the free Tx URBs.
|
|
*/
|
|
if (tx_pend_data_len > lan78xx_tx_urb_space(dev)) {
|
|
netif_stop_queue(net);
|
|
|
|
netif_dbg(dev, hw, dev->net, "tx data len: %u, urb space %u",
|
|
tx_pend_data_len, lan78xx_tx_urb_space(dev));
|
|
|
|
/* Kick off transmission of pending data */
|
|
|
|
if (!skb_queue_empty(&dev->txq_free))
|
|
napi_schedule(&dev->napi);
|
|
}
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)
|
|
{
|
|
struct lan78xx_priv *pdata = NULL;
|
|
int ret;
|
|
int i;
|
|
|
|
dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL);
|
|
|
|
pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
if (!pdata) {
|
|
netdev_warn(dev->net, "Unable to allocate lan78xx_priv");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
pdata->dev = dev;
|
|
|
|
spin_lock_init(&pdata->rfe_ctl_lock);
|
|
mutex_init(&pdata->dataport_mutex);
|
|
|
|
INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write);
|
|
|
|
for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++)
|
|
pdata->vlan_table[i] = 0;
|
|
|
|
INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write);
|
|
|
|
dev->net->features = 0;
|
|
|
|
if (DEFAULT_TX_CSUM_ENABLE)
|
|
dev->net->features |= NETIF_F_HW_CSUM;
|
|
|
|
if (DEFAULT_RX_CSUM_ENABLE)
|
|
dev->net->features |= NETIF_F_RXCSUM;
|
|
|
|
if (DEFAULT_TSO_CSUM_ENABLE)
|
|
dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
|
|
|
|
if (DEFAULT_VLAN_RX_OFFLOAD)
|
|
dev->net->features |= NETIF_F_HW_VLAN_CTAG_RX;
|
|
|
|
if (DEFAULT_VLAN_FILTER_ENABLE)
|
|
dev->net->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
|
|
|
|
dev->net->hw_features = dev->net->features;
|
|
|
|
ret = lan78xx_setup_irq_domain(dev);
|
|
if (ret < 0) {
|
|
netdev_warn(dev->net,
|
|
"lan78xx_setup_irq_domain() failed : %d", ret);
|
|
goto out1;
|
|
}
|
|
|
|
/* Init all registers */
|
|
ret = lan78xx_reset(dev);
|
|
if (ret) {
|
|
netdev_warn(dev->net, "Registers INIT FAILED....");
|
|
goto out2;
|
|
}
|
|
|
|
ret = lan78xx_mdio_init(dev);
|
|
if (ret) {
|
|
netdev_warn(dev->net, "MDIO INIT FAILED.....");
|
|
goto out2;
|
|
}
|
|
|
|
dev->net->flags |= IFF_MULTICAST;
|
|
|
|
pdata->wol = WAKE_MAGIC;
|
|
|
|
return ret;
|
|
|
|
out2:
|
|
lan78xx_remove_irq_domain(dev);
|
|
|
|
out1:
|
|
netdev_warn(dev->net, "Bind routine FAILED");
|
|
cancel_work_sync(&pdata->set_multicast);
|
|
cancel_work_sync(&pdata->set_vlan);
|
|
kfree(pdata);
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf)
|
|
{
|
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
|
|
lan78xx_remove_irq_domain(dev);
|
|
|
|
lan78xx_remove_mdio(dev);
|
|
|
|
if (pdata) {
|
|
cancel_work_sync(&pdata->set_multicast);
|
|
cancel_work_sync(&pdata->set_vlan);
|
|
netif_dbg(dev, ifdown, dev->net, "free pdata");
|
|
kfree(pdata);
|
|
pdata = NULL;
|
|
dev->data[0] = 0;
|
|
}
|
|
}
|
|
|
|
static void lan78xx_rx_csum_offload(struct lan78xx_net *dev,
|
|
struct sk_buff *skb,
|
|
u32 rx_cmd_a, u32 rx_cmd_b)
|
|
{
|
|
/* HW Checksum offload appears to be flawed if used when not stripping
|
|
* VLAN headers. Drop back to S/W checksums under these conditions.
|
|
*/
|
|
if (!(dev->net->features & NETIF_F_RXCSUM) ||
|
|
unlikely(rx_cmd_a & RX_CMD_A_ICSM_) ||
|
|
((rx_cmd_a & RX_CMD_A_FVTG_) &&
|
|
!(dev->net->features & NETIF_F_HW_VLAN_CTAG_RX))) {
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
} else {
|
|
skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_));
|
|
skb->ip_summed = CHECKSUM_COMPLETE;
|
|
}
|
|
}
|
|
|
|
static void lan78xx_rx_vlan_offload(struct lan78xx_net *dev,
|
|
struct sk_buff *skb,
|
|
u32 rx_cmd_a, u32 rx_cmd_b)
|
|
{
|
|
if ((dev->net->features & NETIF_F_HW_VLAN_CTAG_RX) &&
|
|
(rx_cmd_a & RX_CMD_A_FVTG_))
|
|
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
|
|
(rx_cmd_b & 0xffff));
|
|
}
|
|
|
|
static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb)
|
|
{
|
|
dev->net->stats.rx_packets++;
|
|
dev->net->stats.rx_bytes += skb->len;
|
|
|
|
skb->protocol = eth_type_trans(skb, dev->net);
|
|
|
|
netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n",
|
|
skb->len + sizeof(struct ethhdr), skb->protocol);
|
|
memset(skb->cb, 0, sizeof(struct skb_data));
|
|
|
|
if (skb_defer_rx_timestamp(skb))
|
|
return;
|
|
|
|
napi_gro_receive(&dev->napi, skb);
|
|
}
|
|
|
|
static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb,
|
|
int budget, int *work_done)
|
|
{
|
|
if (skb->len < RX_SKB_MIN_LEN)
|
|
return 0;
|
|
|
|
/* Extract frames from the URB buffer and pass each one to
|
|
* the stack in a new NAPI SKB.
|
|
*/
|
|
while (skb->len > 0) {
|
|
u32 rx_cmd_a, rx_cmd_b, align_count, size;
|
|
u16 rx_cmd_c;
|
|
unsigned char *packet;
|
|
|
|
rx_cmd_a = get_unaligned_le32(skb->data);
|
|
skb_pull(skb, sizeof(rx_cmd_a));
|
|
|
|
rx_cmd_b = get_unaligned_le32(skb->data);
|
|
skb_pull(skb, sizeof(rx_cmd_b));
|
|
|
|
rx_cmd_c = get_unaligned_le16(skb->data);
|
|
skb_pull(skb, sizeof(rx_cmd_c));
|
|
|
|
packet = skb->data;
|
|
|
|
/* get the packet length */
|
|
size = (rx_cmd_a & RX_CMD_A_LEN_MASK_);
|
|
align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
|
|
|
|
if (unlikely(size > skb->len)) {
|
|
netif_dbg(dev, rx_err, dev->net,
|
|
"size err rx_cmd_a=0x%08x\n",
|
|
rx_cmd_a);
|
|
return 0;
|
|
}
|
|
|
|
if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) {
|
|
netif_dbg(dev, rx_err, dev->net,
|
|
"Error rx_cmd_a=0x%08x", rx_cmd_a);
|
|
} else {
|
|
u32 frame_len;
|
|
struct sk_buff *skb2;
|
|
|
|
if (unlikely(size < ETH_FCS_LEN)) {
|
|
netif_dbg(dev, rx_err, dev->net,
|
|
"size err rx_cmd_a=0x%08x\n",
|
|
rx_cmd_a);
|
|
return 0;
|
|
}
|
|
|
|
frame_len = size - ETH_FCS_LEN;
|
|
|
|
skb2 = napi_alloc_skb(&dev->napi, frame_len);
|
|
if (!skb2)
|
|
return 0;
|
|
|
|
memcpy(skb2->data, packet, frame_len);
|
|
|
|
skb_put(skb2, frame_len);
|
|
|
|
lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b);
|
|
lan78xx_rx_vlan_offload(dev, skb2, rx_cmd_a, rx_cmd_b);
|
|
|
|
/* Processing of the URB buffer must complete once
|
|
* it has started. If the NAPI work budget is exhausted
|
|
* while frames remain they are added to the overflow
|
|
* queue for delivery in the next NAPI polling cycle.
|
|
*/
|
|
if (*work_done < budget) {
|
|
lan78xx_skb_return(dev, skb2);
|
|
++(*work_done);
|
|
} else {
|
|
skb_queue_tail(&dev->rxq_overflow, skb2);
|
|
}
|
|
}
|
|
|
|
skb_pull(skb, size);
|
|
|
|
/* skip padding bytes before the next frame starts */
|
|
if (skb->len)
|
|
skb_pull(skb, align_count);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb,
|
|
int budget, int *work_done)
|
|
{
|
|
if (!lan78xx_rx(dev, skb, budget, work_done)) {
|
|
netif_dbg(dev, rx_err, dev->net, "drop\n");
|
|
dev->net->stats.rx_errors++;
|
|
}
|
|
}
|
|
|
|
static void rx_complete(struct urb *urb)
|
|
{
|
|
struct sk_buff *skb = (struct sk_buff *)urb->context;
|
|
struct skb_data *entry = (struct skb_data *)skb->cb;
|
|
struct lan78xx_net *dev = entry->dev;
|
|
int urb_status = urb->status;
|
|
enum skb_state state;
|
|
|
|
netif_dbg(dev, rx_status, dev->net,
|
|
"rx done: status %d", urb->status);
|
|
|
|
skb_put(skb, urb->actual_length);
|
|
state = rx_done;
|
|
|
|
if (urb != entry->urb)
|
|
netif_warn(dev, rx_err, dev->net, "URB pointer mismatch");
|
|
|
|
switch (urb_status) {
|
|
case 0:
|
|
if (skb->len < RX_SKB_MIN_LEN) {
|
|
state = rx_cleanup;
|
|
dev->net->stats.rx_errors++;
|
|
dev->net->stats.rx_length_errors++;
|
|
netif_dbg(dev, rx_err, dev->net,
|
|
"rx length %d\n", skb->len);
|
|
}
|
|
usb_mark_last_busy(dev->udev);
|
|
break;
|
|
case -EPIPE:
|
|
dev->net->stats.rx_errors++;
|
|
lan78xx_defer_kevent(dev, EVENT_RX_HALT);
|
|
fallthrough;
|
|
case -ECONNRESET: /* async unlink */
|
|
case -ESHUTDOWN: /* hardware gone */
|
|
netif_dbg(dev, ifdown, dev->net,
|
|
"rx shutdown, code %d\n", urb_status);
|
|
state = rx_cleanup;
|
|
break;
|
|
case -EPROTO:
|
|
case -ETIME:
|
|
case -EILSEQ:
|
|
dev->net->stats.rx_errors++;
|
|
state = rx_cleanup;
|
|
break;
|
|
|
|
/* data overrun ... flush fifo? */
|
|
case -EOVERFLOW:
|
|
dev->net->stats.rx_over_errors++;
|
|
fallthrough;
|
|
|
|
default:
|
|
state = rx_cleanup;
|
|
dev->net->stats.rx_errors++;
|
|
netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status);
|
|
break;
|
|
}
|
|
|
|
state = defer_bh(dev, skb, &dev->rxq, state);
|
|
}
|
|
|
|
static int rx_submit(struct lan78xx_net *dev, struct sk_buff *skb, gfp_t flags)
|
|
{
|
|
struct skb_data *entry = (struct skb_data *)skb->cb;
|
|
size_t size = dev->rx_urb_size;
|
|
struct urb *urb = entry->urb;
|
|
unsigned long lockflags;
|
|
int ret = 0;
|
|
|
|
usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in,
|
|
skb->data, size, rx_complete, skb);
|
|
|
|
spin_lock_irqsave(&dev->rxq.lock, lockflags);
|
|
|
|
if (netif_device_present(dev->net) &&
|
|
netif_running(dev->net) &&
|
|
!test_bit(EVENT_RX_HALT, &dev->flags) &&
|
|
!test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
|
|
ret = usb_submit_urb(urb, flags);
|
|
switch (ret) {
|
|
case 0:
|
|
lan78xx_queue_skb(&dev->rxq, skb, rx_start);
|
|
break;
|
|
case -EPIPE:
|
|
lan78xx_defer_kevent(dev, EVENT_RX_HALT);
|
|
break;
|
|
case -ENODEV:
|
|
case -ENOENT:
|
|
netif_dbg(dev, ifdown, dev->net, "device gone\n");
|
|
netif_device_detach(dev->net);
|
|
break;
|
|
case -EHOSTUNREACH:
|
|
ret = -ENOLINK;
|
|
napi_schedule(&dev->napi);
|
|
break;
|
|
default:
|
|
netif_dbg(dev, rx_err, dev->net,
|
|
"rx submit, %d\n", ret);
|
|
napi_schedule(&dev->napi);
|
|
break;
|
|
}
|
|
} else {
|
|
netif_dbg(dev, ifdown, dev->net, "rx: stopped\n");
|
|
ret = -ENOLINK;
|
|
}
|
|
spin_unlock_irqrestore(&dev->rxq.lock, lockflags);
|
|
|
|
if (ret)
|
|
lan78xx_release_rx_buf(dev, skb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lan78xx_rx_urb_submit_all(struct lan78xx_net *dev)
|
|
{
|
|
struct sk_buff *rx_buf;
|
|
|
|
/* Ensure the maximum number of Rx URBs is submitted
|
|
*/
|
|
while ((rx_buf = lan78xx_get_rx_buf(dev)) != NULL) {
|
|
if (rx_submit(dev, rx_buf, GFP_ATOMIC) != 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void lan78xx_rx_urb_resubmit(struct lan78xx_net *dev,
|
|
struct sk_buff *rx_buf)
|
|
{
|
|
/* reset SKB data pointers */
|
|
|
|
rx_buf->data = rx_buf->head;
|
|
skb_reset_tail_pointer(rx_buf);
|
|
rx_buf->len = 0;
|
|
rx_buf->data_len = 0;
|
|
|
|
rx_submit(dev, rx_buf, GFP_ATOMIC);
|
|
}
|
|
|
|
static void lan78xx_fill_tx_cmd_words(struct sk_buff *skb, u8 *buffer)
|
|
{
|
|
u32 tx_cmd_a;
|
|
u32 tx_cmd_b;
|
|
|
|
tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_;
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_;
|
|
|
|
tx_cmd_b = 0;
|
|
if (skb_is_gso(skb)) {
|
|
u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_);
|
|
|
|
tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_;
|
|
|
|
tx_cmd_a |= TX_CMD_A_LSO_;
|
|
}
|
|
|
|
if (skb_vlan_tag_present(skb)) {
|
|
tx_cmd_a |= TX_CMD_A_IVTG_;
|
|
tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_;
|
|
}
|
|
|
|
put_unaligned_le32(tx_cmd_a, buffer);
|
|
put_unaligned_le32(tx_cmd_b, buffer + 4);
|
|
}
|
|
|
|
static struct skb_data *lan78xx_tx_buf_fill(struct lan78xx_net *dev,
|
|
struct sk_buff *tx_buf)
|
|
{
|
|
struct skb_data *entry = (struct skb_data *)tx_buf->cb;
|
|
int remain = dev->tx_urb_size;
|
|
u8 *tx_data = tx_buf->data;
|
|
u32 urb_len = 0;
|
|
|
|
entry->num_of_packet = 0;
|
|
entry->length = 0;
|
|
|
|
/* Work through the pending SKBs and copy the data of each SKB into
|
|
* the URB buffer if there room for all the SKB data.
|
|
*
|
|
* There must be at least DST+SRC+TYPE in the SKB (with padding enabled)
|
|
*/
|
|
while (remain >= TX_SKB_MIN_LEN) {
|
|
unsigned int pending_bytes;
|
|
unsigned int align_bytes;
|
|
struct sk_buff *skb;
|
|
unsigned int len;
|
|
|
|
lan78xx_tx_pend_skb_get(dev, &skb, &pending_bytes);
|
|
|
|
if (!skb)
|
|
break;
|
|
|
|
align_bytes = (TX_ALIGNMENT - (urb_len % TX_ALIGNMENT)) %
|
|
TX_ALIGNMENT;
|
|
len = align_bytes + TX_CMD_LEN + skb->len;
|
|
if (len > remain) {
|
|
lan78xx_tx_pend_skb_head_add(dev, skb, &pending_bytes);
|
|
break;
|
|
}
|
|
|
|
tx_data += align_bytes;
|
|
|
|
lan78xx_fill_tx_cmd_words(skb, tx_data);
|
|
tx_data += TX_CMD_LEN;
|
|
|
|
len = skb->len;
|
|
if (skb_copy_bits(skb, 0, tx_data, len) < 0) {
|
|
struct net_device_stats *stats = &dev->net->stats;
|
|
|
|
stats->tx_dropped++;
|
|
dev_kfree_skb_any(skb);
|
|
tx_data -= TX_CMD_LEN;
|
|
continue;
|
|
}
|
|
|
|
tx_data += len;
|
|
entry->length += len;
|
|
entry->num_of_packet += skb_shinfo(skb)->gso_segs ?: 1;
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
urb_len = (u32)(tx_data - (u8 *)tx_buf->data);
|
|
|
|
remain = dev->tx_urb_size - urb_len;
|
|
}
|
|
|
|
skb_put(tx_buf, urb_len);
|
|
|
|
return entry;
|
|
}
|
|
|
|
static void lan78xx_tx_bh(struct lan78xx_net *dev)
|
|
{
|
|
int ret;
|
|
|
|
/* Start the stack Tx queue if it was stopped
|
|
*/
|
|
netif_tx_lock(dev->net);
|
|
if (netif_queue_stopped(dev->net)) {
|
|
if (lan78xx_tx_pend_data_len(dev) < lan78xx_tx_urb_space(dev))
|
|
netif_wake_queue(dev->net);
|
|
}
|
|
netif_tx_unlock(dev->net);
|
|
|
|
/* Go through the Tx pending queue and set up URBs to transfer
|
|
* the data to the device. Stop if no more pending data or URBs,
|
|
* or if an error occurs when a URB is submitted.
|
|
*/
|
|
do {
|
|
struct skb_data *entry;
|
|
struct sk_buff *tx_buf;
|
|
unsigned long flags;
|
|
|
|
if (skb_queue_empty(&dev->txq_pend))
|
|
break;
|
|
|
|
tx_buf = lan78xx_get_tx_buf(dev);
|
|
if (!tx_buf)
|
|
break;
|
|
|
|
entry = lan78xx_tx_buf_fill(dev, tx_buf);
|
|
|
|
spin_lock_irqsave(&dev->txq.lock, flags);
|
|
ret = usb_autopm_get_interface_async(dev->intf);
|
|
if (ret < 0) {
|
|
spin_unlock_irqrestore(&dev->txq.lock, flags);
|
|
goto out;
|
|
}
|
|
|
|
usb_fill_bulk_urb(entry->urb, dev->udev, dev->pipe_out,
|
|
tx_buf->data, tx_buf->len, tx_complete,
|
|
tx_buf);
|
|
|
|
if (tx_buf->len % dev->maxpacket == 0) {
|
|
/* send USB_ZERO_PACKET */
|
|
entry->urb->transfer_flags |= URB_ZERO_PACKET;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
/* if device is asleep stop outgoing packet processing */
|
|
if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
|
|
usb_anchor_urb(entry->urb, &dev->deferred);
|
|
netif_stop_queue(dev->net);
|
|
spin_unlock_irqrestore(&dev->txq.lock, flags);
|
|
netdev_dbg(dev->net,
|
|
"Delaying transmission for resumption\n");
|
|
return;
|
|
}
|
|
#endif
|
|
ret = usb_submit_urb(entry->urb, GFP_ATOMIC);
|
|
switch (ret) {
|
|
case 0:
|
|
netif_trans_update(dev->net);
|
|
lan78xx_queue_skb(&dev->txq, tx_buf, tx_start);
|
|
break;
|
|
case -EPIPE:
|
|
netif_stop_queue(dev->net);
|
|
lan78xx_defer_kevent(dev, EVENT_TX_HALT);
|
|
usb_autopm_put_interface_async(dev->intf);
|
|
break;
|
|
case -ENODEV:
|
|
case -ENOENT:
|
|
netif_dbg(dev, tx_err, dev->net,
|
|
"tx submit urb err %d (disconnected?)", ret);
|
|
netif_device_detach(dev->net);
|
|
break;
|
|
default:
|
|
usb_autopm_put_interface_async(dev->intf);
|
|
netif_dbg(dev, tx_err, dev->net,
|
|
"tx submit urb err %d\n", ret);
|
|
break;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&dev->txq.lock, flags);
|
|
|
|
if (ret) {
|
|
netdev_warn(dev->net, "failed to tx urb %d\n", ret);
|
|
out:
|
|
dev->net->stats.tx_dropped += entry->num_of_packet;
|
|
lan78xx_release_tx_buf(dev, tx_buf);
|
|
}
|
|
} while (ret == 0);
|
|
}
|
|
|
|
static int lan78xx_bh(struct lan78xx_net *dev, int budget)
|
|
{
|
|
struct sk_buff_head done;
|
|
struct sk_buff *rx_buf;
|
|
struct skb_data *entry;
|
|
unsigned long flags;
|
|
int work_done = 0;
|
|
|
|
/* Pass frames received in the last NAPI cycle before
|
|
* working on newly completed URBs.
|
|
*/
|
|
while (!skb_queue_empty(&dev->rxq_overflow)) {
|
|
lan78xx_skb_return(dev, skb_dequeue(&dev->rxq_overflow));
|
|
++work_done;
|
|
}
|
|
|
|
/* Take a snapshot of the done queue and move items to a
|
|
* temporary queue. Rx URB completions will continue to add
|
|
* to the done queue.
|
|
*/
|
|
__skb_queue_head_init(&done);
|
|
|
|
spin_lock_irqsave(&dev->rxq_done.lock, flags);
|
|
skb_queue_splice_init(&dev->rxq_done, &done);
|
|
spin_unlock_irqrestore(&dev->rxq_done.lock, flags);
|
|
|
|
/* Extract receive frames from completed URBs and
|
|
* pass them to the stack. Re-submit each completed URB.
|
|
*/
|
|
while ((work_done < budget) &&
|
|
(rx_buf = __skb_dequeue(&done))) {
|
|
entry = (struct skb_data *)(rx_buf->cb);
|
|
switch (entry->state) {
|
|
case rx_done:
|
|
rx_process(dev, rx_buf, budget, &work_done);
|
|
break;
|
|
case rx_cleanup:
|
|
break;
|
|
default:
|
|
netdev_dbg(dev->net, "rx buf state %d\n",
|
|
entry->state);
|
|
break;
|
|
}
|
|
|
|
lan78xx_rx_urb_resubmit(dev, rx_buf);
|
|
}
|
|
|
|
/* If budget was consumed before processing all the URBs put them
|
|
* back on the front of the done queue. They will be first to be
|
|
* processed in the next NAPI cycle.
|
|
*/
|
|
spin_lock_irqsave(&dev->rxq_done.lock, flags);
|
|
skb_queue_splice(&done, &dev->rxq_done);
|
|
spin_unlock_irqrestore(&dev->rxq_done.lock, flags);
|
|
|
|
if (netif_device_present(dev->net) && netif_running(dev->net)) {
|
|
/* reset update timer delta */
|
|
if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) {
|
|
dev->delta = 1;
|
|
mod_timer(&dev->stat_monitor,
|
|
jiffies + STAT_UPDATE_TIMER);
|
|
}
|
|
|
|
/* Submit all free Rx URBs */
|
|
|
|
if (!test_bit(EVENT_RX_HALT, &dev->flags))
|
|
lan78xx_rx_urb_submit_all(dev);
|
|
|
|
/* Submit new Tx URBs */
|
|
|
|
lan78xx_tx_bh(dev);
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
static int lan78xx_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct lan78xx_net *dev = container_of(napi, struct lan78xx_net, napi);
|
|
int result = budget;
|
|
int work_done;
|
|
|
|
/* Don't do any work if the device is suspended */
|
|
|
|
if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
|
|
napi_complete_done(napi, 0);
|
|
return 0;
|
|
}
|
|
|
|
/* Process completed URBs and submit new URBs */
|
|
|
|
work_done = lan78xx_bh(dev, budget);
|
|
|
|
if (work_done < budget) {
|
|
napi_complete_done(napi, work_done);
|
|
|
|
/* Start a new polling cycle if data was received or
|
|
* data is waiting to be transmitted.
|
|
*/
|
|
if (!skb_queue_empty(&dev->rxq_done)) {
|
|
napi_schedule(napi);
|
|
} else if (netif_carrier_ok(dev->net)) {
|
|
if (skb_queue_empty(&dev->txq) &&
|
|
!skb_queue_empty(&dev->txq_pend)) {
|
|
napi_schedule(napi);
|
|
} else {
|
|
netif_tx_lock(dev->net);
|
|
if (netif_queue_stopped(dev->net)) {
|
|
netif_wake_queue(dev->net);
|
|
napi_schedule(napi);
|
|
}
|
|
netif_tx_unlock(dev->net);
|
|
}
|
|
}
|
|
result = work_done;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static void lan78xx_delayedwork(struct work_struct *work)
|
|
{
|
|
int status;
|
|
struct lan78xx_net *dev;
|
|
|
|
dev = container_of(work, struct lan78xx_net, wq.work);
|
|
|
|
if (test_bit(EVENT_DEV_DISCONNECT, &dev->flags))
|
|
return;
|
|
|
|
if (usb_autopm_get_interface(dev->intf) < 0)
|
|
return;
|
|
|
|
if (test_bit(EVENT_TX_HALT, &dev->flags)) {
|
|
unlink_urbs(dev, &dev->txq);
|
|
|
|
status = usb_clear_halt(dev->udev, dev->pipe_out);
|
|
if (status < 0 &&
|
|
status != -EPIPE &&
|
|
status != -ESHUTDOWN) {
|
|
if (netif_msg_tx_err(dev))
|
|
netdev_err(dev->net,
|
|
"can't clear tx halt, status %d\n",
|
|
status);
|
|
} else {
|
|
clear_bit(EVENT_TX_HALT, &dev->flags);
|
|
if (status != -ESHUTDOWN)
|
|
netif_wake_queue(dev->net);
|
|
}
|
|
}
|
|
|
|
if (test_bit(EVENT_RX_HALT, &dev->flags)) {
|
|
unlink_urbs(dev, &dev->rxq);
|
|
status = usb_clear_halt(dev->udev, dev->pipe_in);
|
|
if (status < 0 &&
|
|
status != -EPIPE &&
|
|
status != -ESHUTDOWN) {
|
|
if (netif_msg_rx_err(dev))
|
|
netdev_err(dev->net,
|
|
"can't clear rx halt, status %d\n",
|
|
status);
|
|
} else {
|
|
clear_bit(EVENT_RX_HALT, &dev->flags);
|
|
napi_schedule(&dev->napi);
|
|
}
|
|
}
|
|
|
|
if (test_bit(EVENT_LINK_RESET, &dev->flags)) {
|
|
int ret = 0;
|
|
|
|
clear_bit(EVENT_LINK_RESET, &dev->flags);
|
|
if (lan78xx_link_reset(dev) < 0) {
|
|
netdev_info(dev->net, "link reset failed (%d)\n",
|
|
ret);
|
|
}
|
|
}
|
|
|
|
if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) {
|
|
lan78xx_update_stats(dev);
|
|
|
|
clear_bit(EVENT_STAT_UPDATE, &dev->flags);
|
|
|
|
mod_timer(&dev->stat_monitor,
|
|
jiffies + (STAT_UPDATE_TIMER * dev->delta));
|
|
|
|
dev->delta = min((dev->delta * 2), 50);
|
|
}
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
}
|
|
|
|
static void intr_complete(struct urb *urb)
|
|
{
|
|
struct lan78xx_net *dev = urb->context;
|
|
int status = urb->status;
|
|
|
|
switch (status) {
|
|
/* success */
|
|
case 0:
|
|
lan78xx_status(dev, urb);
|
|
break;
|
|
|
|
/* software-driven interface shutdown */
|
|
case -ENOENT: /* urb killed */
|
|
case -ENODEV: /* hardware gone */
|
|
case -ESHUTDOWN: /* hardware gone */
|
|
netif_dbg(dev, ifdown, dev->net,
|
|
"intr shutdown, code %d\n", status);
|
|
return;
|
|
|
|
/* NOTE: not throttling like RX/TX, since this endpoint
|
|
* already polls infrequently
|
|
*/
|
|
default:
|
|
netdev_dbg(dev->net, "intr status %d\n", status);
|
|
break;
|
|
}
|
|
|
|
if (!netif_device_present(dev->net) ||
|
|
!netif_running(dev->net)) {
|
|
netdev_warn(dev->net, "not submitting new status URB");
|
|
return;
|
|
}
|
|
|
|
memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
|
|
status = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
switch (status) {
|
|
case 0:
|
|
break;
|
|
case -ENODEV:
|
|
case -ENOENT:
|
|
netif_dbg(dev, timer, dev->net,
|
|
"intr resubmit %d (disconnect?)", status);
|
|
netif_device_detach(dev->net);
|
|
break;
|
|
default:
|
|
netif_err(dev, timer, dev->net,
|
|
"intr resubmit --> %d\n", status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void lan78xx_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct lan78xx_net *dev;
|
|
struct usb_device *udev;
|
|
struct net_device *net;
|
|
struct phy_device *phydev;
|
|
|
|
dev = usb_get_intfdata(intf);
|
|
usb_set_intfdata(intf, NULL);
|
|
if (!dev)
|
|
return;
|
|
|
|
netif_napi_del(&dev->napi);
|
|
|
|
udev = interface_to_usbdev(intf);
|
|
net = dev->net;
|
|
|
|
unregister_netdev(net);
|
|
|
|
timer_shutdown_sync(&dev->stat_monitor);
|
|
set_bit(EVENT_DEV_DISCONNECT, &dev->flags);
|
|
cancel_delayed_work_sync(&dev->wq);
|
|
|
|
phydev = net->phydev;
|
|
|
|
phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0);
|
|
phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0);
|
|
|
|
phy_disconnect(net->phydev);
|
|
|
|
if (phy_is_pseudo_fixed_link(phydev))
|
|
fixed_phy_unregister(phydev);
|
|
|
|
usb_scuttle_anchored_urbs(&dev->deferred);
|
|
|
|
lan78xx_unbind(dev, intf);
|
|
|
|
lan78xx_free_tx_resources(dev);
|
|
lan78xx_free_rx_resources(dev);
|
|
|
|
usb_kill_urb(dev->urb_intr);
|
|
usb_free_urb(dev->urb_intr);
|
|
|
|
free_netdev(net);
|
|
usb_put_dev(udev);
|
|
}
|
|
|
|
static void lan78xx_tx_timeout(struct net_device *net, unsigned int txqueue)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(net);
|
|
|
|
unlink_urbs(dev, &dev->txq);
|
|
napi_schedule(&dev->napi);
|
|
}
|
|
|
|
static netdev_features_t lan78xx_features_check(struct sk_buff *skb,
|
|
struct net_device *netdev,
|
|
netdev_features_t features)
|
|
{
|
|
struct lan78xx_net *dev = netdev_priv(netdev);
|
|
|
|
if (skb->len > LAN78XX_TSO_SIZE(dev))
|
|
features &= ~NETIF_F_GSO_MASK;
|
|
|
|
features = vlan_features_check(skb, features);
|
|
features = vxlan_features_check(skb, features);
|
|
|
|
return features;
|
|
}
|
|
|
|
static const struct net_device_ops lan78xx_netdev_ops = {
|
|
.ndo_open = lan78xx_open,
|
|
.ndo_stop = lan78xx_stop,
|
|
.ndo_start_xmit = lan78xx_start_xmit,
|
|
.ndo_tx_timeout = lan78xx_tx_timeout,
|
|
.ndo_change_mtu = lan78xx_change_mtu,
|
|
.ndo_set_mac_address = lan78xx_set_mac_addr,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_eth_ioctl = phy_do_ioctl_running,
|
|
.ndo_set_rx_mode = lan78xx_set_multicast,
|
|
.ndo_set_features = lan78xx_set_features,
|
|
.ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid,
|
|
.ndo_features_check = lan78xx_features_check,
|
|
};
|
|
|
|
static void lan78xx_stat_monitor(struct timer_list *t)
|
|
{
|
|
struct lan78xx_net *dev = from_timer(dev, t, stat_monitor);
|
|
|
|
lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE);
|
|
}
|
|
|
|
static int lan78xx_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_host_endpoint *ep_blkin, *ep_blkout, *ep_intr;
|
|
struct lan78xx_net *dev;
|
|
struct net_device *netdev;
|
|
struct usb_device *udev;
|
|
int ret;
|
|
unsigned int maxp;
|
|
unsigned int period;
|
|
u8 *buf = NULL;
|
|
|
|
udev = interface_to_usbdev(intf);
|
|
udev = usb_get_dev(udev);
|
|
|
|
netdev = alloc_etherdev(sizeof(struct lan78xx_net));
|
|
if (!netdev) {
|
|
dev_err(&intf->dev, "Error: OOM\n");
|
|
ret = -ENOMEM;
|
|
goto out1;
|
|
}
|
|
|
|
/* netdev_printk() needs this */
|
|
SET_NETDEV_DEV(netdev, &intf->dev);
|
|
|
|
dev = netdev_priv(netdev);
|
|
dev->udev = udev;
|
|
dev->intf = intf;
|
|
dev->net = netdev;
|
|
dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
|
|
| NETIF_MSG_PROBE | NETIF_MSG_LINK);
|
|
|
|
skb_queue_head_init(&dev->rxq);
|
|
skb_queue_head_init(&dev->txq);
|
|
skb_queue_head_init(&dev->rxq_done);
|
|
skb_queue_head_init(&dev->txq_pend);
|
|
skb_queue_head_init(&dev->rxq_overflow);
|
|
mutex_init(&dev->phy_mutex);
|
|
mutex_init(&dev->dev_mutex);
|
|
|
|
ret = lan78xx_urb_config_init(dev);
|
|
if (ret < 0)
|
|
goto out2;
|
|
|
|
ret = lan78xx_alloc_tx_resources(dev);
|
|
if (ret < 0)
|
|
goto out2;
|
|
|
|
ret = lan78xx_alloc_rx_resources(dev);
|
|
if (ret < 0)
|
|
goto out3;
|
|
|
|
/* MTU range: 68 - 9000 */
|
|
netdev->max_mtu = MAX_SINGLE_PACKET_SIZE;
|
|
|
|
netif_set_tso_max_size(netdev, LAN78XX_TSO_SIZE(dev));
|
|
|
|
netif_napi_add(netdev, &dev->napi, lan78xx_poll);
|
|
|
|
INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork);
|
|
init_usb_anchor(&dev->deferred);
|
|
|
|
netdev->netdev_ops = &lan78xx_netdev_ops;
|
|
netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES;
|
|
netdev->ethtool_ops = &lan78xx_ethtool_ops;
|
|
|
|
dev->delta = 1;
|
|
timer_setup(&dev->stat_monitor, lan78xx_stat_monitor, 0);
|
|
|
|
mutex_init(&dev->stats.access_lock);
|
|
|
|
if (intf->cur_altsetting->desc.bNumEndpoints < 3) {
|
|
ret = -ENODEV;
|
|
goto out4;
|
|
}
|
|
|
|
dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE);
|
|
ep_blkin = usb_pipe_endpoint(udev, dev->pipe_in);
|
|
if (!ep_blkin || !usb_endpoint_is_bulk_in(&ep_blkin->desc)) {
|
|
ret = -ENODEV;
|
|
goto out4;
|
|
}
|
|
|
|
dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE);
|
|
ep_blkout = usb_pipe_endpoint(udev, dev->pipe_out);
|
|
if (!ep_blkout || !usb_endpoint_is_bulk_out(&ep_blkout->desc)) {
|
|
ret = -ENODEV;
|
|
goto out4;
|
|
}
|
|
|
|
ep_intr = &intf->cur_altsetting->endpoint[2];
|
|
if (!usb_endpoint_is_int_in(&ep_intr->desc)) {
|
|
ret = -ENODEV;
|
|
goto out4;
|
|
}
|
|
|
|
dev->pipe_intr = usb_rcvintpipe(dev->udev,
|
|
usb_endpoint_num(&ep_intr->desc));
|
|
|
|
ret = lan78xx_bind(dev, intf);
|
|
if (ret < 0)
|
|
goto out4;
|
|
|
|
period = ep_intr->desc.bInterval;
|
|
maxp = usb_maxpacket(dev->udev, dev->pipe_intr);
|
|
buf = kmalloc(maxp, GFP_KERNEL);
|
|
if (!buf) {
|
|
ret = -ENOMEM;
|
|
goto out5;
|
|
}
|
|
|
|
dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!dev->urb_intr) {
|
|
ret = -ENOMEM;
|
|
goto out6;
|
|
} else {
|
|
usb_fill_int_urb(dev->urb_intr, dev->udev,
|
|
dev->pipe_intr, buf, maxp,
|
|
intr_complete, dev, period);
|
|
dev->urb_intr->transfer_flags |= URB_FREE_BUFFER;
|
|
}
|
|
|
|
dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out);
|
|
|
|
/* Reject broken descriptors. */
|
|
if (dev->maxpacket == 0) {
|
|
ret = -ENODEV;
|
|
goto out6;
|
|
}
|
|
|
|
/* driver requires remote-wakeup capability during autosuspend. */
|
|
intf->needs_remote_wakeup = 1;
|
|
|
|
ret = lan78xx_phy_init(dev);
|
|
if (ret < 0)
|
|
goto out7;
|
|
|
|
ret = register_netdev(netdev);
|
|
if (ret != 0) {
|
|
netif_err(dev, probe, netdev, "couldn't register the device\n");
|
|
goto out8;
|
|
}
|
|
|
|
usb_set_intfdata(intf, dev);
|
|
|
|
ret = device_set_wakeup_enable(&udev->dev, true);
|
|
|
|
/* Default delay of 2sec has more overhead than advantage.
|
|
* Set to 10sec as default.
|
|
*/
|
|
pm_runtime_set_autosuspend_delay(&udev->dev,
|
|
DEFAULT_AUTOSUSPEND_DELAY);
|
|
|
|
return 0;
|
|
|
|
out8:
|
|
phy_disconnect(netdev->phydev);
|
|
out7:
|
|
usb_free_urb(dev->urb_intr);
|
|
out6:
|
|
kfree(buf);
|
|
out5:
|
|
lan78xx_unbind(dev, intf);
|
|
out4:
|
|
netif_napi_del(&dev->napi);
|
|
lan78xx_free_rx_resources(dev);
|
|
out3:
|
|
lan78xx_free_tx_resources(dev);
|
|
out2:
|
|
free_netdev(netdev);
|
|
out1:
|
|
usb_put_dev(udev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len)
|
|
{
|
|
const u16 crc16poly = 0x8005;
|
|
int i;
|
|
u16 bit, crc, msb;
|
|
u8 data;
|
|
|
|
crc = 0xFFFF;
|
|
for (i = 0; i < len; i++) {
|
|
data = *buf++;
|
|
for (bit = 0; bit < 8; bit++) {
|
|
msb = crc >> 15;
|
|
crc <<= 1;
|
|
|
|
if (msb ^ (u16)(data & 1)) {
|
|
crc ^= crc16poly;
|
|
crc |= (u16)0x0001U;
|
|
}
|
|
data >>= 1;
|
|
}
|
|
}
|
|
|
|
return crc;
|
|
}
|
|
|
|
static int lan78xx_set_auto_suspend(struct lan78xx_net *dev)
|
|
{
|
|
u32 buf;
|
|
int ret;
|
|
|
|
ret = lan78xx_stop_tx_path(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_stop_rx_path(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* auto suspend (selective suspend) */
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUCSR2, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set goodframe wakeup */
|
|
|
|
ret = lan78xx_read_reg(dev, WUCSR, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= WUCSR_RFE_WAKE_EN_;
|
|
buf |= WUCSR_STORE_WAKE_;
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf &= ~PMT_CTL_RES_CLR_WKP_EN_;
|
|
buf |= PMT_CTL_RES_CLR_WKP_STS_;
|
|
buf |= PMT_CTL_PHY_WAKE_EN_;
|
|
buf |= PMT_CTL_WOL_EN_;
|
|
buf &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
buf |= PMT_CTL_SUS_MODE_3_;
|
|
|
|
ret = lan78xx_write_reg(dev, PMT_CTL, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= PMT_CTL_WUPS_MASK_;
|
|
|
|
ret = lan78xx_write_reg(dev, PMT_CTL, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_start_rx_path(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol)
|
|
{
|
|
const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
|
|
const u8 ipv6_multicast[3] = { 0x33, 0x33 };
|
|
const u8 arp_type[2] = { 0x08, 0x06 };
|
|
u32 temp_pmt_ctl;
|
|
int mask_index;
|
|
u32 temp_wucsr;
|
|
u32 buf;
|
|
u16 crc;
|
|
int ret;
|
|
|
|
ret = lan78xx_stop_tx_path(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_stop_rx_path(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUCSR2, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
temp_wucsr = 0;
|
|
|
|
temp_pmt_ctl = 0;
|
|
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_;
|
|
temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_;
|
|
|
|
for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++) {
|
|
ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
mask_index = 0;
|
|
if (wol & WAKE_PHY) {
|
|
temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_;
|
|
|
|
temp_pmt_ctl |= PMT_CTL_WOL_EN_;
|
|
temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
|
|
}
|
|
if (wol & WAKE_MAGIC) {
|
|
temp_wucsr |= WUCSR_MPEN_;
|
|
|
|
temp_pmt_ctl |= PMT_CTL_WOL_EN_;
|
|
temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_;
|
|
}
|
|
if (wol & WAKE_BCAST) {
|
|
temp_wucsr |= WUCSR_BCST_EN_;
|
|
|
|
temp_pmt_ctl |= PMT_CTL_WOL_EN_;
|
|
temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
|
|
}
|
|
if (wol & WAKE_MCAST) {
|
|
temp_wucsr |= WUCSR_WAKE_EN_;
|
|
|
|
/* set WUF_CFG & WUF_MASK for IPv4 Multicast */
|
|
crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3);
|
|
ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
|
|
WUF_CFGX_EN_ |
|
|
WUF_CFGX_TYPE_MCAST_ |
|
|
(0 << WUF_CFGX_OFFSET_SHIFT_) |
|
|
(crc & WUF_CFGX_CRC16_MASK_));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mask_index++;
|
|
|
|
/* for IPv6 Multicast */
|
|
crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2);
|
|
ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
|
|
WUF_CFGX_EN_ |
|
|
WUF_CFGX_TYPE_MCAST_ |
|
|
(0 << WUF_CFGX_OFFSET_SHIFT_) |
|
|
(crc & WUF_CFGX_CRC16_MASK_));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mask_index++;
|
|
|
|
temp_pmt_ctl |= PMT_CTL_WOL_EN_;
|
|
temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
|
|
}
|
|
if (wol & WAKE_UCAST) {
|
|
temp_wucsr |= WUCSR_PFDA_EN_;
|
|
|
|
temp_pmt_ctl |= PMT_CTL_WOL_EN_;
|
|
temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
|
|
}
|
|
if (wol & WAKE_ARP) {
|
|
temp_wucsr |= WUCSR_WAKE_EN_;
|
|
|
|
/* set WUF_CFG & WUF_MASK
|
|
* for packettype (offset 12,13) = ARP (0x0806)
|
|
*/
|
|
crc = lan78xx_wakeframe_crc16(arp_type, 2);
|
|
ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
|
|
WUF_CFGX_EN_ |
|
|
WUF_CFGX_TYPE_ALL_ |
|
|
(0 << WUF_CFGX_OFFSET_SHIFT_) |
|
|
(crc & WUF_CFGX_CRC16_MASK_));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mask_index++;
|
|
|
|
temp_pmt_ctl |= PMT_CTL_WOL_EN_;
|
|
temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
|
|
}
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* when multiple WOL bits are set */
|
|
if (hweight_long((unsigned long)wol) > 1) {
|
|
temp_pmt_ctl |= PMT_CTL_WOL_EN_;
|
|
temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
|
|
}
|
|
ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* clear WUPS */
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
buf |= PMT_CTL_WUPS_MASK_;
|
|
|
|
ret = lan78xx_write_reg(dev, PMT_CTL, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = lan78xx_start_rx_path(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_suspend(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct lan78xx_net *dev = usb_get_intfdata(intf);
|
|
bool dev_open;
|
|
int ret;
|
|
|
|
mutex_lock(&dev->dev_mutex);
|
|
|
|
netif_dbg(dev, ifdown, dev->net,
|
|
"suspending: pm event %#x", message.event);
|
|
|
|
dev_open = test_bit(EVENT_DEV_OPEN, &dev->flags);
|
|
|
|
if (dev_open) {
|
|
spin_lock_irq(&dev->txq.lock);
|
|
/* don't autosuspend while transmitting */
|
|
if ((skb_queue_len(&dev->txq) ||
|
|
skb_queue_len(&dev->txq_pend)) &&
|
|
PMSG_IS_AUTO(message)) {
|
|
spin_unlock_irq(&dev->txq.lock);
|
|
ret = -EBUSY;
|
|
goto out;
|
|
} else {
|
|
set_bit(EVENT_DEV_ASLEEP, &dev->flags);
|
|
spin_unlock_irq(&dev->txq.lock);
|
|
}
|
|
|
|
/* stop RX */
|
|
ret = lan78xx_stop_rx_path(dev);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = lan78xx_flush_rx_fifo(dev);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* stop Tx */
|
|
ret = lan78xx_stop_tx_path(dev);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* empty out the Rx and Tx queues */
|
|
netif_device_detach(dev->net);
|
|
lan78xx_terminate_urbs(dev);
|
|
usb_kill_urb(dev->urb_intr);
|
|
|
|
/* reattach */
|
|
netif_device_attach(dev->net);
|
|
|
|
del_timer(&dev->stat_monitor);
|
|
|
|
if (PMSG_IS_AUTO(message)) {
|
|
ret = lan78xx_set_auto_suspend(dev);
|
|
if (ret < 0)
|
|
goto out;
|
|
} else {
|
|
struct lan78xx_priv *pdata;
|
|
|
|
pdata = (struct lan78xx_priv *)(dev->data[0]);
|
|
netif_carrier_off(dev->net);
|
|
ret = lan78xx_set_suspend(dev, pdata->wol);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
} else {
|
|
/* Interface is down; don't allow WOL and PHY
|
|
* events to wake up the host
|
|
*/
|
|
u32 buf;
|
|
|
|
set_bit(EVENT_DEV_ASLEEP, &dev->flags);
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR, 0);
|
|
if (ret < 0)
|
|
goto out;
|
|
ret = lan78xx_write_reg(dev, WUCSR2, 0);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
buf &= ~PMT_CTL_RES_CLR_WKP_EN_;
|
|
buf |= PMT_CTL_RES_CLR_WKP_STS_;
|
|
buf &= ~PMT_CTL_SUS_MODE_MASK_;
|
|
buf |= PMT_CTL_SUS_MODE_3_;
|
|
|
|
ret = lan78xx_write_reg(dev, PMT_CTL, buf);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
buf |= PMT_CTL_WUPS_MASK_;
|
|
|
|
ret = lan78xx_write_reg(dev, PMT_CTL, buf);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
ret = 0;
|
|
out:
|
|
mutex_unlock(&dev->dev_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static bool lan78xx_submit_deferred_urbs(struct lan78xx_net *dev)
|
|
{
|
|
bool pipe_halted = false;
|
|
struct urb *urb;
|
|
|
|
while ((urb = usb_get_from_anchor(&dev->deferred))) {
|
|
struct sk_buff *skb = urb->context;
|
|
int ret;
|
|
|
|
if (!netif_device_present(dev->net) ||
|
|
!netif_carrier_ok(dev->net) ||
|
|
pipe_halted) {
|
|
lan78xx_release_tx_buf(dev, skb);
|
|
continue;
|
|
}
|
|
|
|
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
if (ret == 0) {
|
|
netif_trans_update(dev->net);
|
|
lan78xx_queue_skb(&dev->txq, skb, tx_start);
|
|
} else {
|
|
if (ret == -EPIPE) {
|
|
netif_stop_queue(dev->net);
|
|
pipe_halted = true;
|
|
} else if (ret == -ENODEV) {
|
|
netif_device_detach(dev->net);
|
|
}
|
|
|
|
lan78xx_release_tx_buf(dev, skb);
|
|
}
|
|
}
|
|
|
|
return pipe_halted;
|
|
}
|
|
|
|
static int lan78xx_resume(struct usb_interface *intf)
|
|
{
|
|
struct lan78xx_net *dev = usb_get_intfdata(intf);
|
|
bool dev_open;
|
|
int ret;
|
|
|
|
mutex_lock(&dev->dev_mutex);
|
|
|
|
netif_dbg(dev, ifup, dev->net, "resuming device");
|
|
|
|
dev_open = test_bit(EVENT_DEV_OPEN, &dev->flags);
|
|
|
|
if (dev_open) {
|
|
bool pipe_halted = false;
|
|
|
|
ret = lan78xx_flush_tx_fifo(dev);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
if (dev->urb_intr) {
|
|
int ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
|
|
|
|
if (ret < 0) {
|
|
if (ret == -ENODEV)
|
|
netif_device_detach(dev->net);
|
|
netdev_warn(dev->net, "Failed to submit intr URB");
|
|
}
|
|
}
|
|
|
|
spin_lock_irq(&dev->txq.lock);
|
|
|
|
if (netif_device_present(dev->net)) {
|
|
pipe_halted = lan78xx_submit_deferred_urbs(dev);
|
|
|
|
if (pipe_halted)
|
|
lan78xx_defer_kevent(dev, EVENT_TX_HALT);
|
|
}
|
|
|
|
clear_bit(EVENT_DEV_ASLEEP, &dev->flags);
|
|
|
|
spin_unlock_irq(&dev->txq.lock);
|
|
|
|
if (!pipe_halted &&
|
|
netif_device_present(dev->net) &&
|
|
(lan78xx_tx_pend_data_len(dev) < lan78xx_tx_urb_space(dev)))
|
|
netif_start_queue(dev->net);
|
|
|
|
ret = lan78xx_start_tx_path(dev);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
napi_schedule(&dev->napi);
|
|
|
|
if (!timer_pending(&dev->stat_monitor)) {
|
|
dev->delta = 1;
|
|
mod_timer(&dev->stat_monitor,
|
|
jiffies + STAT_UPDATE_TIMER);
|
|
}
|
|
|
|
} else {
|
|
clear_bit(EVENT_DEV_ASLEEP, &dev->flags);
|
|
}
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR2, 0);
|
|
if (ret < 0)
|
|
goto out;
|
|
ret = lan78xx_write_reg(dev, WUCSR, 0);
|
|
if (ret < 0)
|
|
goto out;
|
|
ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ |
|
|
WUCSR2_ARP_RCD_ |
|
|
WUCSR2_IPV6_TCPSYN_RCD_ |
|
|
WUCSR2_IPV4_TCPSYN_RCD_);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ |
|
|
WUCSR_EEE_RX_WAKE_ |
|
|
WUCSR_PFDA_FR_ |
|
|
WUCSR_RFE_WAKE_FR_ |
|
|
WUCSR_WUFR_ |
|
|
WUCSR_MPR_ |
|
|
WUCSR_BCST_FR_);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = 0;
|
|
out:
|
|
mutex_unlock(&dev->dev_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lan78xx_reset_resume(struct usb_interface *intf)
|
|
{
|
|
struct lan78xx_net *dev = usb_get_intfdata(intf);
|
|
int ret;
|
|
|
|
netif_dbg(dev, ifup, dev->net, "(reset) resuming device");
|
|
|
|
ret = lan78xx_reset(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
phy_start(dev->net->phydev);
|
|
|
|
ret = lan78xx_resume(intf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct usb_device_id products[] = {
|
|
{
|
|
/* LAN7800 USB Gigabit Ethernet Device */
|
|
USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID),
|
|
},
|
|
{
|
|
/* LAN7850 USB Gigabit Ethernet Device */
|
|
USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID),
|
|
},
|
|
{
|
|
/* LAN7801 USB Gigabit Ethernet Device */
|
|
USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID),
|
|
},
|
|
{
|
|
/* ATM2-AF USB Gigabit Ethernet Device */
|
|
USB_DEVICE(AT29M2AF_USB_VENDOR_ID, AT29M2AF_USB_PRODUCT_ID),
|
|
},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, products);
|
|
|
|
static struct usb_driver lan78xx_driver = {
|
|
.name = DRIVER_NAME,
|
|
.id_table = products,
|
|
.probe = lan78xx_probe,
|
|
.disconnect = lan78xx_disconnect,
|
|
.suspend = lan78xx_suspend,
|
|
.resume = lan78xx_resume,
|
|
.reset_resume = lan78xx_reset_resume,
|
|
.supports_autosuspend = 1,
|
|
.disable_hub_initiated_lpm = 1,
|
|
};
|
|
|
|
module_usb_driver(lan78xx_driver);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|