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linuxdebug/drivers/net/ethernet/freescale/fman/fman_tgec.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
/*
* Copyright 2008 - 2015 Freescale Semiconductor Inc.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "fman_tgec.h"
#include "fman.h"
#include "mac.h"
#include <linux/slab.h>
#include <linux/bitrev.h>
#include <linux/io.h>
#include <linux/crc32.h>
/* Transmit Inter-Packet Gap Length Register (TX_IPG_LENGTH) */
#define TGEC_TX_IPG_LENGTH_MASK 0x000003ff
/* Command and Configuration Register (COMMAND_CONFIG) */
#define CMD_CFG_EN_TIMESTAMP 0x00100000
#define CMD_CFG_NO_LEN_CHK 0x00020000
#define CMD_CFG_PAUSE_IGNORE 0x00000100
#define CMF_CFG_CRC_FWD 0x00000040
#define CMD_CFG_PROMIS_EN 0x00000010
#define CMD_CFG_RX_EN 0x00000002
#define CMD_CFG_TX_EN 0x00000001
/* Interrupt Mask Register (IMASK) */
#define TGEC_IMASK_MDIO_SCAN_EVENT 0x00010000
#define TGEC_IMASK_MDIO_CMD_CMPL 0x00008000
#define TGEC_IMASK_REM_FAULT 0x00004000
#define TGEC_IMASK_LOC_FAULT 0x00002000
#define TGEC_IMASK_TX_ECC_ER 0x00001000
#define TGEC_IMASK_TX_FIFO_UNFL 0x00000800
#define TGEC_IMASK_TX_FIFO_OVFL 0x00000400
#define TGEC_IMASK_TX_ER 0x00000200
#define TGEC_IMASK_RX_FIFO_OVFL 0x00000100
#define TGEC_IMASK_RX_ECC_ER 0x00000080
#define TGEC_IMASK_RX_JAB_FRM 0x00000040
#define TGEC_IMASK_RX_OVRSZ_FRM 0x00000020
#define TGEC_IMASK_RX_RUNT_FRM 0x00000010
#define TGEC_IMASK_RX_FRAG_FRM 0x00000008
#define TGEC_IMASK_RX_LEN_ER 0x00000004
#define TGEC_IMASK_RX_CRC_ER 0x00000002
#define TGEC_IMASK_RX_ALIGN_ER 0x00000001
/* Hashtable Control Register (HASHTABLE_CTRL) */
#define TGEC_HASH_MCAST_SHIFT 23
#define TGEC_HASH_MCAST_EN 0x00000200
#define TGEC_HASH_ADR_MSK 0x000001ff
#define DEFAULT_TX_IPG_LENGTH 12
#define DEFAULT_MAX_FRAME_LENGTH 0x600
#define DEFAULT_PAUSE_QUANT 0xf000
/* number of pattern match registers (entries) */
#define TGEC_NUM_OF_PADDRS 1
/* Group address bit indication */
#define GROUP_ADDRESS 0x0000010000000000LL
/* Hash table size (= 32 bits*8 regs) */
#define TGEC_HASH_TABLE_SIZE 512
/* tGEC memory map */
struct tgec_regs {
u32 tgec_id; /* 0x000 Controller ID */
u32 reserved001[1]; /* 0x004 */
u32 command_config; /* 0x008 Control and configuration */
u32 mac_addr_0; /* 0x00c Lower 32 bits of the MAC adr */
u32 mac_addr_1; /* 0x010 Upper 16 bits of the MAC adr */
u32 maxfrm; /* 0x014 Maximum frame length */
u32 pause_quant; /* 0x018 Pause quanta */
u32 rx_fifo_sections; /* 0x01c */
u32 tx_fifo_sections; /* 0x020 */
u32 rx_fifo_almost_f_e; /* 0x024 */
u32 tx_fifo_almost_f_e; /* 0x028 */
u32 hashtable_ctrl; /* 0x02c Hash table control */
u32 mdio_cfg_status; /* 0x030 */
u32 mdio_command; /* 0x034 */
u32 mdio_data; /* 0x038 */
u32 mdio_regaddr; /* 0x03c */
u32 status; /* 0x040 */
u32 tx_ipg_len; /* 0x044 Transmitter inter-packet-gap */
u32 mac_addr_2; /* 0x048 Lower 32 bits of 2nd MAC adr */
u32 mac_addr_3; /* 0x04c Upper 16 bits of 2nd MAC adr */
u32 rx_fifo_ptr_rd; /* 0x050 */
u32 rx_fifo_ptr_wr; /* 0x054 */
u32 tx_fifo_ptr_rd; /* 0x058 */
u32 tx_fifo_ptr_wr; /* 0x05c */
u32 imask; /* 0x060 Interrupt mask */
u32 ievent; /* 0x064 Interrupt event */
u32 udp_port; /* 0x068 Defines a UDP Port number */
u32 type_1588v2; /* 0x06c Type field for 1588v2 */
u32 reserved070[4]; /* 0x070 */
/* 10Ge Statistics Counter */
u32 tfrm_u; /* 80 aFramesTransmittedOK */
u32 tfrm_l; /* 84 aFramesTransmittedOK */
u32 rfrm_u; /* 88 aFramesReceivedOK */
u32 rfrm_l; /* 8c aFramesReceivedOK */
u32 rfcs_u; /* 90 aFrameCheckSequenceErrors */
u32 rfcs_l; /* 94 aFrameCheckSequenceErrors */
u32 raln_u; /* 98 aAlignmentErrors */
u32 raln_l; /* 9c aAlignmentErrors */
u32 txpf_u; /* A0 aPAUSEMACCtrlFramesTransmitted */
u32 txpf_l; /* A4 aPAUSEMACCtrlFramesTransmitted */
u32 rxpf_u; /* A8 aPAUSEMACCtrlFramesReceived */
u32 rxpf_l; /* Ac aPAUSEMACCtrlFramesReceived */
u32 rlong_u; /* B0 aFrameTooLongErrors */
u32 rlong_l; /* B4 aFrameTooLongErrors */
u32 rflr_u; /* B8 aInRangeLengthErrors */
u32 rflr_l; /* Bc aInRangeLengthErrors */
u32 tvlan_u; /* C0 VLANTransmittedOK */
u32 tvlan_l; /* C4 VLANTransmittedOK */
u32 rvlan_u; /* C8 VLANReceivedOK */
u32 rvlan_l; /* Cc VLANReceivedOK */
u32 toct_u; /* D0 if_out_octets */
u32 toct_l; /* D4 if_out_octets */
u32 roct_u; /* D8 if_in_octets */
u32 roct_l; /* Dc if_in_octets */
u32 ruca_u; /* E0 if_in_ucast_pkts */
u32 ruca_l; /* E4 if_in_ucast_pkts */
u32 rmca_u; /* E8 ifInMulticastPkts */
u32 rmca_l; /* Ec ifInMulticastPkts */
u32 rbca_u; /* F0 ifInBroadcastPkts */
u32 rbca_l; /* F4 ifInBroadcastPkts */
u32 terr_u; /* F8 if_out_errors */
u32 terr_l; /* Fc if_out_errors */
u32 reserved100[2]; /* 100-108 */
u32 tuca_u; /* 108 if_out_ucast_pkts */
u32 tuca_l; /* 10c if_out_ucast_pkts */
u32 tmca_u; /* 110 ifOutMulticastPkts */
u32 tmca_l; /* 114 ifOutMulticastPkts */
u32 tbca_u; /* 118 ifOutBroadcastPkts */
u32 tbca_l; /* 11c ifOutBroadcastPkts */
u32 rdrp_u; /* 120 etherStatsDropEvents */
u32 rdrp_l; /* 124 etherStatsDropEvents */
u32 reoct_u; /* 128 etherStatsOctets */
u32 reoct_l; /* 12c etherStatsOctets */
u32 rpkt_u; /* 130 etherStatsPkts */
u32 rpkt_l; /* 134 etherStatsPkts */
u32 trund_u; /* 138 etherStatsUndersizePkts */
u32 trund_l; /* 13c etherStatsUndersizePkts */
u32 r64_u; /* 140 etherStatsPkts64Octets */
u32 r64_l; /* 144 etherStatsPkts64Octets */
u32 r127_u; /* 148 etherStatsPkts65to127Octets */
u32 r127_l; /* 14c etherStatsPkts65to127Octets */
u32 r255_u; /* 150 etherStatsPkts128to255Octets */
u32 r255_l; /* 154 etherStatsPkts128to255Octets */
u32 r511_u; /* 158 etherStatsPkts256to511Octets */
u32 r511_l; /* 15c etherStatsPkts256to511Octets */
u32 r1023_u; /* 160 etherStatsPkts512to1023Octets */
u32 r1023_l; /* 164 etherStatsPkts512to1023Octets */
u32 r1518_u; /* 168 etherStatsPkts1024to1518Octets */
u32 r1518_l; /* 16c etherStatsPkts1024to1518Octets */
u32 r1519x_u; /* 170 etherStatsPkts1519toX */
u32 r1519x_l; /* 174 etherStatsPkts1519toX */
u32 trovr_u; /* 178 etherStatsOversizePkts */
u32 trovr_l; /* 17c etherStatsOversizePkts */
u32 trjbr_u; /* 180 etherStatsJabbers */
u32 trjbr_l; /* 184 etherStatsJabbers */
u32 trfrg_u; /* 188 etherStatsFragments */
u32 trfrg_l; /* 18C etherStatsFragments */
u32 rerr_u; /* 190 if_in_errors */
u32 rerr_l; /* 194 if_in_errors */
};
struct tgec_cfg {
bool pause_ignore;
bool promiscuous_mode_enable;
u16 max_frame_length;
u16 pause_quant;
u32 tx_ipg_length;
};
struct fman_mac {
/* Pointer to the memory mapped registers. */
struct tgec_regs __iomem *regs;
/* MAC address of device; */
u64 addr;
u16 max_speed;
struct mac_device *dev_id; /* device cookie used by the exception cbs */
fman_mac_exception_cb *exception_cb;
fman_mac_exception_cb *event_cb;
/* pointer to driver's global address hash table */
struct eth_hash_t *multicast_addr_hash;
/* pointer to driver's individual address hash table */
struct eth_hash_t *unicast_addr_hash;
u8 mac_id;
u32 exceptions;
struct tgec_cfg *cfg;
void *fm;
struct fman_rev_info fm_rev_info;
bool allmulti_enabled;
};
static void set_mac_address(struct tgec_regs __iomem *regs, const u8 *adr)
{
u32 tmp0, tmp1;
tmp0 = (u32)(adr[0] | adr[1] << 8 | adr[2] << 16 | adr[3] << 24);
tmp1 = (u32)(adr[4] | adr[5] << 8);
iowrite32be(tmp0, &regs->mac_addr_0);
iowrite32be(tmp1, &regs->mac_addr_1);
}
static void set_dflts(struct tgec_cfg *cfg)
{
cfg->promiscuous_mode_enable = false;
cfg->pause_ignore = false;
cfg->tx_ipg_length = DEFAULT_TX_IPG_LENGTH;
cfg->max_frame_length = DEFAULT_MAX_FRAME_LENGTH;
cfg->pause_quant = DEFAULT_PAUSE_QUANT;
}
static int init(struct tgec_regs __iomem *regs, struct tgec_cfg *cfg,
u32 exception_mask)
{
u32 tmp;
/* Config */
tmp = CMF_CFG_CRC_FWD;
if (cfg->promiscuous_mode_enable)
tmp |= CMD_CFG_PROMIS_EN;
if (cfg->pause_ignore)
tmp |= CMD_CFG_PAUSE_IGNORE;
/* Payload length check disable */
tmp |= CMD_CFG_NO_LEN_CHK;
iowrite32be(tmp, &regs->command_config);
/* Max Frame Length */
iowrite32be((u32)cfg->max_frame_length, &regs->maxfrm);
/* Pause Time */
iowrite32be(cfg->pause_quant, &regs->pause_quant);
/* clear all pending events and set-up interrupts */
iowrite32be(0xffffffff, &regs->ievent);
iowrite32be(ioread32be(&regs->imask) | exception_mask, &regs->imask);
return 0;
}
static int check_init_parameters(struct fman_mac *tgec)
{
if (tgec->max_speed < SPEED_10000) {
pr_err("10G MAC driver only support 10G speed\n");
return -EINVAL;
}
if (!tgec->exception_cb) {
pr_err("uninitialized exception_cb\n");
return -EINVAL;
}
if (!tgec->event_cb) {
pr_err("uninitialized event_cb\n");
return -EINVAL;
}
return 0;
}
static int get_exception_flag(enum fman_mac_exceptions exception)
{
u32 bit_mask;
switch (exception) {
case FM_MAC_EX_10G_MDIO_SCAN_EVENT:
bit_mask = TGEC_IMASK_MDIO_SCAN_EVENT;
break;
case FM_MAC_EX_10G_MDIO_CMD_CMPL:
bit_mask = TGEC_IMASK_MDIO_CMD_CMPL;
break;
case FM_MAC_EX_10G_REM_FAULT:
bit_mask = TGEC_IMASK_REM_FAULT;
break;
case FM_MAC_EX_10G_LOC_FAULT:
bit_mask = TGEC_IMASK_LOC_FAULT;
break;
case FM_MAC_EX_10G_TX_ECC_ER:
bit_mask = TGEC_IMASK_TX_ECC_ER;
break;
case FM_MAC_EX_10G_TX_FIFO_UNFL:
bit_mask = TGEC_IMASK_TX_FIFO_UNFL;
break;
case FM_MAC_EX_10G_TX_FIFO_OVFL:
bit_mask = TGEC_IMASK_TX_FIFO_OVFL;
break;
case FM_MAC_EX_10G_TX_ER:
bit_mask = TGEC_IMASK_TX_ER;
break;
case FM_MAC_EX_10G_RX_FIFO_OVFL:
bit_mask = TGEC_IMASK_RX_FIFO_OVFL;
break;
case FM_MAC_EX_10G_RX_ECC_ER:
bit_mask = TGEC_IMASK_RX_ECC_ER;
break;
case FM_MAC_EX_10G_RX_JAB_FRM:
bit_mask = TGEC_IMASK_RX_JAB_FRM;
break;
case FM_MAC_EX_10G_RX_OVRSZ_FRM:
bit_mask = TGEC_IMASK_RX_OVRSZ_FRM;
break;
case FM_MAC_EX_10G_RX_RUNT_FRM:
bit_mask = TGEC_IMASK_RX_RUNT_FRM;
break;
case FM_MAC_EX_10G_RX_FRAG_FRM:
bit_mask = TGEC_IMASK_RX_FRAG_FRM;
break;
case FM_MAC_EX_10G_RX_LEN_ER:
bit_mask = TGEC_IMASK_RX_LEN_ER;
break;
case FM_MAC_EX_10G_RX_CRC_ER:
bit_mask = TGEC_IMASK_RX_CRC_ER;
break;
case FM_MAC_EX_10G_RX_ALIGN_ER:
bit_mask = TGEC_IMASK_RX_ALIGN_ER;
break;
default:
bit_mask = 0;
break;
}
return bit_mask;
}
static void tgec_err_exception(void *handle)
{
struct fman_mac *tgec = (struct fman_mac *)handle;
struct tgec_regs __iomem *regs = tgec->regs;
u32 event;
/* do not handle MDIO events */
event = ioread32be(&regs->ievent) &
~(TGEC_IMASK_MDIO_SCAN_EVENT |
TGEC_IMASK_MDIO_CMD_CMPL);
event &= ioread32be(&regs->imask);
iowrite32be(event, &regs->ievent);
if (event & TGEC_IMASK_REM_FAULT)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_REM_FAULT);
if (event & TGEC_IMASK_LOC_FAULT)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_LOC_FAULT);
if (event & TGEC_IMASK_TX_ECC_ER)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ECC_ER);
if (event & TGEC_IMASK_TX_FIFO_UNFL)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_UNFL);
if (event & TGEC_IMASK_TX_FIFO_OVFL)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_OVFL);
if (event & TGEC_IMASK_TX_ER)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ER);
if (event & TGEC_IMASK_RX_FIFO_OVFL)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FIFO_OVFL);
if (event & TGEC_IMASK_RX_ECC_ER)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ECC_ER);
if (event & TGEC_IMASK_RX_JAB_FRM)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_JAB_FRM);
if (event & TGEC_IMASK_RX_OVRSZ_FRM)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_OVRSZ_FRM);
if (event & TGEC_IMASK_RX_RUNT_FRM)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_RUNT_FRM);
if (event & TGEC_IMASK_RX_FRAG_FRM)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FRAG_FRM);
if (event & TGEC_IMASK_RX_LEN_ER)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_LEN_ER);
if (event & TGEC_IMASK_RX_CRC_ER)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_CRC_ER);
if (event & TGEC_IMASK_RX_ALIGN_ER)
tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ALIGN_ER);
}
static void free_init_resources(struct fman_mac *tgec)
{
fman_unregister_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id,
FMAN_INTR_TYPE_ERR);
/* release the driver's group hash table */
free_hash_table(tgec->multicast_addr_hash);
tgec->multicast_addr_hash = NULL;
/* release the driver's individual hash table */
free_hash_table(tgec->unicast_addr_hash);
tgec->unicast_addr_hash = NULL;
}
static bool is_init_done(struct tgec_cfg *cfg)
{
/* Checks if tGEC driver parameters were initialized */
if (!cfg)
return true;
return false;
}
static int tgec_enable(struct fman_mac *tgec)
{
struct tgec_regs __iomem *regs = tgec->regs;
u32 tmp;
if (!is_init_done(tgec->cfg))
return -EINVAL;
tmp = ioread32be(&regs->command_config);
tmp |= CMD_CFG_RX_EN | CMD_CFG_TX_EN;
iowrite32be(tmp, &regs->command_config);
return 0;
}
static void tgec_disable(struct fman_mac *tgec)
{
struct tgec_regs __iomem *regs = tgec->regs;
u32 tmp;
WARN_ON_ONCE(!is_init_done(tgec->cfg));
tmp = ioread32be(&regs->command_config);
tmp &= ~(CMD_CFG_RX_EN | CMD_CFG_TX_EN);
iowrite32be(tmp, &regs->command_config);
}
static int tgec_set_promiscuous(struct fman_mac *tgec, bool new_val)
{
struct tgec_regs __iomem *regs = tgec->regs;
u32 tmp;
if (!is_init_done(tgec->cfg))
return -EINVAL;
tmp = ioread32be(&regs->command_config);
if (new_val)
tmp |= CMD_CFG_PROMIS_EN;
else
tmp &= ~CMD_CFG_PROMIS_EN;
iowrite32be(tmp, &regs->command_config);
return 0;
}
static int tgec_set_tx_pause_frames(struct fman_mac *tgec,
u8 __maybe_unused priority, u16 pause_time,
u16 __maybe_unused thresh_time)
{
struct tgec_regs __iomem *regs = tgec->regs;
if (!is_init_done(tgec->cfg))
return -EINVAL;
iowrite32be((u32)pause_time, &regs->pause_quant);
return 0;
}
static int tgec_accept_rx_pause_frames(struct fman_mac *tgec, bool en)
{
struct tgec_regs __iomem *regs = tgec->regs;
u32 tmp;
if (!is_init_done(tgec->cfg))
return -EINVAL;
tmp = ioread32be(&regs->command_config);
if (!en)
tmp |= CMD_CFG_PAUSE_IGNORE;
else
tmp &= ~CMD_CFG_PAUSE_IGNORE;
iowrite32be(tmp, &regs->command_config);
return 0;
}
static int tgec_modify_mac_address(struct fman_mac *tgec,
const enet_addr_t *p_enet_addr)
{
if (!is_init_done(tgec->cfg))
return -EINVAL;
tgec->addr = ENET_ADDR_TO_UINT64(*p_enet_addr);
set_mac_address(tgec->regs, (const u8 *)(*p_enet_addr));
return 0;
}
static int tgec_add_hash_mac_address(struct fman_mac *tgec,
enet_addr_t *eth_addr)
{
struct tgec_regs __iomem *regs = tgec->regs;
struct eth_hash_entry *hash_entry;
u32 crc = 0xFFFFFFFF, hash;
u64 addr;
if (!is_init_done(tgec->cfg))
return -EINVAL;
addr = ENET_ADDR_TO_UINT64(*eth_addr);
if (!(addr & GROUP_ADDRESS)) {
/* Unicast addresses not supported in hash */
pr_err("Unicast Address\n");
return -EINVAL;
}
/* CRC calculation */
crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
crc = bitrev32(crc);
/* Take 9 MSB bits */
hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
/* Create element to be added to the driver hash table */
hash_entry = kmalloc(sizeof(*hash_entry), GFP_ATOMIC);
if (!hash_entry)
return -ENOMEM;
hash_entry->addr = addr;
INIT_LIST_HEAD(&hash_entry->node);
list_add_tail(&hash_entry->node,
&tgec->multicast_addr_hash->lsts[hash]);
iowrite32be((hash | TGEC_HASH_MCAST_EN), &regs->hashtable_ctrl);
return 0;
}
static int tgec_set_allmulti(struct fman_mac *tgec, bool enable)
{
u32 entry;
struct tgec_regs __iomem *regs = tgec->regs;
if (!is_init_done(tgec->cfg))
return -EINVAL;
if (enable) {
for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++)
iowrite32be(entry | TGEC_HASH_MCAST_EN,
&regs->hashtable_ctrl);
} else {
for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++)
iowrite32be(entry & ~TGEC_HASH_MCAST_EN,
&regs->hashtable_ctrl);
}
tgec->allmulti_enabled = enable;
return 0;
}
static int tgec_set_tstamp(struct fman_mac *tgec, bool enable)
{
struct tgec_regs __iomem *regs = tgec->regs;
u32 tmp;
if (!is_init_done(tgec->cfg))
return -EINVAL;
tmp = ioread32be(&regs->command_config);
if (enable)
tmp |= CMD_CFG_EN_TIMESTAMP;
else
tmp &= ~CMD_CFG_EN_TIMESTAMP;
iowrite32be(tmp, &regs->command_config);
return 0;
}
static int tgec_del_hash_mac_address(struct fman_mac *tgec,
enet_addr_t *eth_addr)
{
struct tgec_regs __iomem *regs = tgec->regs;
struct eth_hash_entry *hash_entry = NULL;
struct list_head *pos;
u32 crc = 0xFFFFFFFF, hash;
u64 addr;
if (!is_init_done(tgec->cfg))
return -EINVAL;
addr = ((*(u64 *)eth_addr) >> 16);
/* CRC calculation */
crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
crc = bitrev32(crc);
/* Take 9 MSB bits */
hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
list_for_each(pos, &tgec->multicast_addr_hash->lsts[hash]) {
hash_entry = ETH_HASH_ENTRY_OBJ(pos);
if (hash_entry && hash_entry->addr == addr) {
list_del_init(&hash_entry->node);
kfree(hash_entry);
break;
}
}
if (!tgec->allmulti_enabled) {
if (list_empty(&tgec->multicast_addr_hash->lsts[hash]))
iowrite32be((hash & ~TGEC_HASH_MCAST_EN),
&regs->hashtable_ctrl);
}
return 0;
}
static void tgec_adjust_link(struct mac_device *mac_dev)
{
struct phy_device *phy_dev = mac_dev->phy_dev;
mac_dev->update_speed(mac_dev, phy_dev->speed);
}
static int tgec_set_exception(struct fman_mac *tgec,
enum fman_mac_exceptions exception, bool enable)
{
struct tgec_regs __iomem *regs = tgec->regs;
u32 bit_mask = 0;
if (!is_init_done(tgec->cfg))
return -EINVAL;
bit_mask = get_exception_flag(exception);
if (bit_mask) {
if (enable)
tgec->exceptions |= bit_mask;
else
tgec->exceptions &= ~bit_mask;
} else {
pr_err("Undefined exception\n");
return -EINVAL;
}
if (enable)
iowrite32be(ioread32be(&regs->imask) | bit_mask, &regs->imask);
else
iowrite32be(ioread32be(&regs->imask) & ~bit_mask, &regs->imask);
return 0;
}
static int tgec_init(struct fman_mac *tgec)
{
struct tgec_cfg *cfg;
enet_addr_t eth_addr;
int err;
if (is_init_done(tgec->cfg))
return -EINVAL;
if (DEFAULT_RESET_ON_INIT &&
(fman_reset_mac(tgec->fm, tgec->mac_id) != 0)) {
pr_err("Can't reset MAC!\n");
return -EINVAL;
}
err = check_init_parameters(tgec);
if (err)
return err;
cfg = tgec->cfg;
if (tgec->addr) {
MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr);
set_mac_address(tgec->regs, (const u8 *)eth_addr);
}
/* interrupts */
/* FM_10G_REM_N_LCL_FLT_EX_10GMAC_ERRATA_SW005 Errata workaround */
if (tgec->fm_rev_info.major <= 2)
tgec->exceptions &= ~(TGEC_IMASK_REM_FAULT |
TGEC_IMASK_LOC_FAULT);
err = init(tgec->regs, cfg, tgec->exceptions);
if (err) {
free_init_resources(tgec);
pr_err("TGEC version doesn't support this i/f mode\n");
return err;
}
/* Max Frame Length */
err = fman_set_mac_max_frame(tgec->fm, tgec->mac_id,
cfg->max_frame_length);
if (err) {
pr_err("Setting max frame length FAILED\n");
free_init_resources(tgec);
return -EINVAL;
}
/* FM_TX_FIFO_CORRUPTION_ERRATA_10GMAC_A007 Errata workaround */
if (tgec->fm_rev_info.major == 2) {
struct tgec_regs __iomem *regs = tgec->regs;
u32 tmp;
/* restore the default tx ipg Length */
tmp = (ioread32be(&regs->tx_ipg_len) &
~TGEC_TX_IPG_LENGTH_MASK) | 12;
iowrite32be(tmp, &regs->tx_ipg_len);
}
tgec->multicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
if (!tgec->multicast_addr_hash) {
free_init_resources(tgec);
pr_err("allocation hash table is FAILED\n");
return -ENOMEM;
}
tgec->unicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
if (!tgec->unicast_addr_hash) {
free_init_resources(tgec);
pr_err("allocation hash table is FAILED\n");
return -ENOMEM;
}
fman_register_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id,
FMAN_INTR_TYPE_ERR, tgec_err_exception, tgec);
kfree(cfg);
tgec->cfg = NULL;
return 0;
}
static int tgec_free(struct fman_mac *tgec)
{
free_init_resources(tgec);
kfree(tgec->cfg);
kfree(tgec);
return 0;
}
static struct fman_mac *tgec_config(struct mac_device *mac_dev,
struct fman_mac_params *params)
{
struct fman_mac *tgec;
struct tgec_cfg *cfg;
/* allocate memory for the UCC GETH data structure. */
tgec = kzalloc(sizeof(*tgec), GFP_KERNEL);
if (!tgec)
return NULL;
/* allocate memory for the 10G MAC driver parameters data structure. */
cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
if (!cfg) {
tgec_free(tgec);
return NULL;
}
/* Plant parameter structure pointer */
tgec->cfg = cfg;
set_dflts(cfg);
tgec->regs = mac_dev->vaddr;
tgec->addr = ENET_ADDR_TO_UINT64(mac_dev->addr);
tgec->max_speed = params->max_speed;
tgec->mac_id = params->mac_id;
tgec->exceptions = (TGEC_IMASK_MDIO_SCAN_EVENT |
TGEC_IMASK_REM_FAULT |
TGEC_IMASK_LOC_FAULT |
TGEC_IMASK_TX_ECC_ER |
TGEC_IMASK_TX_FIFO_UNFL |
TGEC_IMASK_TX_FIFO_OVFL |
TGEC_IMASK_TX_ER |
TGEC_IMASK_RX_FIFO_OVFL |
TGEC_IMASK_RX_ECC_ER |
TGEC_IMASK_RX_JAB_FRM |
TGEC_IMASK_RX_OVRSZ_FRM |
TGEC_IMASK_RX_RUNT_FRM |
TGEC_IMASK_RX_FRAG_FRM |
TGEC_IMASK_RX_CRC_ER |
TGEC_IMASK_RX_ALIGN_ER);
tgec->exception_cb = params->exception_cb;
tgec->event_cb = params->event_cb;
tgec->dev_id = mac_dev;
tgec->fm = params->fm;
/* Save FMan revision */
fman_get_revision(tgec->fm, &tgec->fm_rev_info);
return tgec;
}
int tgec_initialization(struct mac_device *mac_dev,
struct device_node *mac_node,
struct fman_mac_params *params)
{
int err;
struct fman_mac *tgec;
mac_dev->set_promisc = tgec_set_promiscuous;
mac_dev->change_addr = tgec_modify_mac_address;
mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address;
mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address;
mac_dev->set_tx_pause = tgec_set_tx_pause_frames;
mac_dev->set_rx_pause = tgec_accept_rx_pause_frames;
mac_dev->set_exception = tgec_set_exception;
mac_dev->set_allmulti = tgec_set_allmulti;
mac_dev->set_tstamp = tgec_set_tstamp;
mac_dev->set_multi = fman_set_multi;
mac_dev->adjust_link = tgec_adjust_link;
mac_dev->enable = tgec_enable;
mac_dev->disable = tgec_disable;
mac_dev->fman_mac = tgec_config(mac_dev, params);
if (!mac_dev->fman_mac) {
err = -EINVAL;
goto _return;
}
tgec = mac_dev->fman_mac;
tgec->cfg->max_frame_length = fman_get_max_frm();
err = tgec_init(tgec);
if (err < 0)
goto _return_fm_mac_free;
/* For 10G MAC, disable Tx ECC exception */
err = tgec_set_exception(tgec, FM_MAC_EX_10G_TX_ECC_ER, false);
if (err < 0)
goto _return_fm_mac_free;
pr_info("FMan XGEC version: 0x%08x\n",
ioread32be(&tgec->regs->tgec_id));
goto _return;
_return_fm_mac_free:
tgec_free(mac_dev->fman_mac);
_return:
return err;
}