blob: 9780f2092bd4de95d87282605ae69ac2cb0352dd [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0+
/**
* netsec.c - Socionext Synquacer Netsec driver
* Copyright 2021 Linaro Ltd.
*/
#include <clk.h>
#include <cpu_func.h>
#include <dm.h>
#include <fdt_support.h>
#include <log.h>
#include <malloc.h>
#include <miiphy.h>
#include <net.h>
#include <regmap.h>
#include <reset.h>
#include <syscon.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <dm/device_compat.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <spi.h>
#include <spi_flash.h>
#define NETSEC_REG_SOFT_RST 0x104
#define NETSEC_REG_COM_INIT 0x120
#define NETSEC_REG_TOP_STATUS 0x200
#define NETSEC_IRQ_RX BIT(1)
#define NETSEC_IRQ_TX BIT(0)
#define NETSEC_REG_TOP_INTEN 0x204
#define NETSEC_REG_INTEN_SET 0x234
#define NETSEC_REG_INTEN_CLR 0x238
#define NETSEC_REG_NRM_TX_STATUS 0x400
#define NETSEC_REG_NRM_TX_INTEN 0x404
#define NETSEC_REG_NRM_TX_INTEN_SET 0x428
#define NETSEC_REG_NRM_TX_INTEN_CLR 0x42c
#define NRM_TX_ST_NTOWNR BIT(17)
#define NRM_TX_ST_TR_ERR BIT(16)
#define NRM_TX_ST_TXDONE BIT(15)
#define NRM_TX_ST_TMREXP BIT(14)
#define NETSEC_REG_NRM_RX_STATUS 0x440
#define NETSEC_REG_NRM_RX_INTEN 0x444
#define NETSEC_REG_NRM_RX_INTEN_SET 0x468
#define NETSEC_REG_NRM_RX_INTEN_CLR 0x46c
#define NRM_RX_ST_RC_ERR BIT(16)
#define NRM_RX_ST_PKTCNT BIT(15)
#define NRM_RX_ST_TMREXP BIT(14)
#define NETSEC_REG_PKT_CMD_BUF 0xd0
#define NETSEC_REG_CLK_EN 0x100
#define NETSEC_REG_PKT_CTRL 0x140
#define NETSEC_REG_DMA_TMR_CTRL 0x20c
#define NETSEC_REG_F_TAIKI_MC_VER 0x22c
#define NETSEC_REG_F_TAIKI_VER 0x230
#define NETSEC_REG_DMA_HM_CTRL 0x214
#define NETSEC_REG_DMA_MH_CTRL 0x220
#define NETSEC_REG_ADDR_DIS_CORE 0x218
#define NETSEC_REG_DMAC_HM_CMD_BUF 0x210
#define NETSEC_REG_DMAC_MH_CMD_BUF 0x21c
#define NETSEC_REG_NRM_TX_PKTCNT 0x410
#define NETSEC_REG_NRM_TX_DONE_PKTCNT 0x414
#define NETSEC_REG_NRM_TX_DONE_TXINT_PKTCNT 0x418
#define NETSEC_REG_NRM_TX_TMR 0x41c
#define NETSEC_REG_NRM_RX_PKTCNT 0x454
#define NETSEC_REG_NRM_RX_RXINT_PKTCNT 0x458
#define NETSEC_REG_NRM_TX_TXINT_TMR 0x420
#define NETSEC_REG_NRM_RX_RXINT_TMR 0x460
#define NETSEC_REG_NRM_RX_TMR 0x45c
#define NETSEC_REG_NRM_TX_DESC_START_UP 0x434
#define NETSEC_REG_NRM_TX_DESC_START_LW 0x408
#define NETSEC_REG_NRM_RX_DESC_START_UP 0x474
#define NETSEC_REG_NRM_RX_DESC_START_LW 0x448
#define NETSEC_REG_NRM_TX_CONFIG 0x430
#define NETSEC_REG_NRM_RX_CONFIG 0x470
#define MAC_REG_STATUS 0x1024
#define MAC_REG_DATA 0x11c0
#define MAC_REG_CMD 0x11c4
#define MAC_REG_FLOW_TH 0x11cc
#define MAC_REG_INTF_SEL 0x11d4
#define MAC_REG_DESC_INIT 0x11fc
#define MAC_REG_DESC_SOFT_RST 0x1204
#define NETSEC_REG_MODE_TRANS_COMP_STATUS 0x500
#define GMAC_REG_MCR 0x0000
#define GMAC_REG_MFFR 0x0004
#define GMAC_REG_GAR 0x0010
#define GMAC_REG_GDR 0x0014
#define GMAC_REG_FCR 0x0018
#define GMAC_REG_BMR 0x1000
#define GMAC_REG_RDLAR 0x100c
#define GMAC_REG_TDLAR 0x1010
#define GMAC_REG_OMR 0x1018
#define MHZ(n) ((n) * 1000 * 1000)
#define NETSEC_TX_SHIFT_OWN_FIELD 31
#define NETSEC_TX_SHIFT_LD_FIELD 30
#define NETSEC_TX_SHIFT_DRID_FIELD 24
#define NETSEC_TX_SHIFT_PT_FIELD 21
#define NETSEC_TX_SHIFT_TDRID_FIELD 16
#define NETSEC_TX_SHIFT_CC_FIELD 15
#define NETSEC_TX_SHIFT_FS_FIELD 9
#define NETSEC_TX_LAST 8
#define NETSEC_TX_SHIFT_CO 7
#define NETSEC_TX_SHIFT_SO 6
#define NETSEC_TX_SHIFT_TRS_FIELD 4
#define NETSEC_RX_PKT_OWN_FIELD 31
#define NETSEC_RX_PKT_LD_FIELD 30
#define NETSEC_RX_PKT_SDRID_FIELD 24
#define NETSEC_RX_PKT_FR_FIELD 23
#define NETSEC_RX_PKT_ER_FIELD 21
#define NETSEC_RX_PKT_ERR_FIELD 16
#define NETSEC_RX_PKT_TDRID_FIELD 12
#define NETSEC_RX_PKT_FS_FIELD 9
#define NETSEC_RX_PKT_LS_FIELD 8
#define NETSEC_RX_PKT_CO_FIELD 6
#define NETSEC_RX_PKT_ERR_MASK 3
#define NETSEC_MAX_TX_PKT_LEN 1518
#define NETSEC_MAX_TX_JUMBO_PKT_LEN 9018
#define NETSEC_RING_GMAC 15
#define NETSEC_RING_MAX 2
#define NETSEC_TCP_SEG_LEN_MAX 1460
#define NETSEC_TCP_JUMBO_SEG_LEN_MAX 8960
#define NETSEC_RX_CKSUM_NOTAVAIL 0
#define NETSEC_RX_CKSUM_OK 1
#define NETSEC_RX_CKSUM_NG 2
#define NETSEC_TOP_IRQ_REG_ME_START BIT(20)
#define NETSEC_IRQ_TRANSITION_COMPLETE BIT(4)
#define NETSEC_MODE_TRANS_COMP_IRQ_N2T BIT(20)
#define NETSEC_MODE_TRANS_COMP_IRQ_T2N BIT(19)
#define NETSEC_INT_PKTCNT_MAX 2047
#define NETSEC_FLOW_START_TH_MAX 95
#define NETSEC_FLOW_STOP_TH_MAX 95
#define NETSEC_FLOW_PAUSE_TIME_MIN 5
#define NETSEC_CLK_EN_REG_DOM_ALL 0x3f
#define NETSEC_PKT_CTRL_REG_MODE_NRM BIT(28)
#define NETSEC_PKT_CTRL_REG_EN_JUMBO BIT(27)
#define NETSEC_PKT_CTRL_REG_LOG_CHKSUM_ER BIT(3)
#define NETSEC_PKT_CTRL_REG_LOG_HD_INCOMPLETE BIT(2)
#define NETSEC_PKT_CTRL_REG_LOG_HD_ER BIT(1)
#define NETSEC_PKT_CTRL_REG_DRP_NO_MATCH BIT(0)
#define NETSEC_CLK_EN_REG_DOM_G BIT(5)
#define NETSEC_CLK_EN_REG_DOM_C BIT(1)
#define NETSEC_CLK_EN_REG_DOM_D BIT(0)
#define NETSEC_COM_INIT_REG_DB BIT(2)
#define NETSEC_COM_INIT_REG_CLS BIT(1)
#define NETSEC_COM_INIT_REG_ALL (NETSEC_COM_INIT_REG_CLS | \
NETSEC_COM_INIT_REG_DB)
#define NETSEC_SOFT_RST_REG_RESET 0
#define NETSEC_SOFT_RST_REG_RUN BIT(31)
#define NETSEC_DMA_CTRL_REG_STOP 1
#define MH_CTRL__MODE_TRANS BIT(20)
#define NETSEC_GMAC_CMD_ST_READ 0
#define NETSEC_GMAC_CMD_ST_WRITE BIT(28)
#define NETSEC_GMAC_CMD_ST_BUSY BIT(31)
#define NETSEC_GMAC_BMR_REG_COMMON 0x00412080
#define NETSEC_GMAC_BMR_REG_RESET 0x00020181
#define NETSEC_GMAC_BMR_REG_SWR 0x00000001
#define NETSEC_GMAC_OMR_REG_ST BIT(13)
#define NETSEC_GMAC_OMR_REG_SR BIT(1)
#define NETSEC_GMAC_MCR_REG_IBN BIT(30)
#define NETSEC_GMAC_MCR_REG_CST BIT(25)
#define NETSEC_GMAC_MCR_REG_JE BIT(20)
#define NETSEC_MCR_PS BIT(15)
#define NETSEC_GMAC_MCR_REG_FES BIT(14)
#define NETSEC_GMAC_MCR_REG_FULL_DUPLEX_COMMON 0x0000280c
#define NETSEC_GMAC_MCR_REG_HALF_DUPLEX_COMMON 0x0001a00c
#define NETSEC_FCR_RFE BIT(2)
#define NETSEC_FCR_TFE BIT(1)
#define NETSEC_GMAC_GAR_REG_GW BIT(1)
#define NETSEC_GMAC_GAR_REG_GB BIT(0)
#define NETSEC_GMAC_GAR_REG_SHIFT_PA 11
#define NETSEC_GMAC_GAR_REG_SHIFT_GR 6
#define GMAC_REG_SHIFT_CR_GAR 2
#define NETSEC_GMAC_GAR_REG_CR_25_35_MHZ 2
#define NETSEC_GMAC_GAR_REG_CR_35_60_MHZ 3
#define NETSEC_GMAC_GAR_REG_CR_60_100_MHZ 0
#define NETSEC_GMAC_GAR_REG_CR_100_150_MHZ 1
#define NETSEC_GMAC_GAR_REG_CR_150_250_MHZ 4
#define NETSEC_GMAC_GAR_REG_CR_250_300_MHZ 5
#define NETSEC_GMAC_RDLAR_REG_COMMON 0x18000
#define NETSEC_GMAC_TDLAR_REG_COMMON 0x1c000
#define NETSEC_REG_NETSEC_VER_F_TAIKI 0x50000
#define NETSEC_REG_DESC_RING_CONFIG_CFG_UP BIT(31)
#define NETSEC_REG_DESC_RING_CONFIG_CH_RST BIT(30)
#define NETSEC_REG_DESC_TMR_MODE 4
#define NETSEC_REG_DESC_ENDIAN 0
#define NETSEC_MAC_DESC_SOFT_RST_SOFT_RST 1
#define NETSEC_MAC_DESC_INIT_REG_INIT 1
#define NETSEC_EEPROM_MAC_ADDRESS 0x00
#define NETSEC_EEPROM_HM_ME_ADDRESS_H 0x08
#define NETSEC_EEPROM_HM_ME_ADDRESS_L 0x0C
#define NETSEC_EEPROM_HM_ME_SIZE 0x10
#define NETSEC_EEPROM_MH_ME_ADDRESS_H 0x14
#define NETSEC_EEPROM_MH_ME_ADDRESS_L 0x18
#define NETSEC_EEPROM_MH_ME_SIZE 0x1C
#define NETSEC_EEPROM_PKT_ME_ADDRESS 0x20
#define NETSEC_EEPROM_PKT_ME_SIZE 0x24
#define DESC_SZ sizeof(struct netsec_de)
#define NETSEC_F_NETSEC_VER_MAJOR_NUM(x) ((x) & 0xffff0000)
#define EERPROM_MAP_OFFSET 0x8000000
#define NOR_BLOCK 1024
struct netsec_de { /* Netsec Descriptor layout */
u32 attr;
u32 data_buf_addr_up;
u32 data_buf_addr_lw;
u32 buf_len_info;
};
struct netsec_priv {
struct netsec_de rxde[PKTBUFSRX];
struct netsec_de txde[1];
u16 rxat;
phys_addr_t eeprom_base;
phys_addr_t ioaddr;
struct mii_dev *bus;
struct phy_device *phydev;
u32 phy_addr, freq;
int phy_mode;
int max_speed;
};
struct netsec_tx_pkt_ctrl {
u16 tcp_seg_len;
bool tcp_seg_offload_flag;
bool cksum_offload_flag;
};
struct netsec_rx_pkt_info {
int rx_cksum_result;
int err_code;
bool err_flag;
};
static void netsec_write_reg(struct netsec_priv *priv, u32 reg_addr, u32 val)
{
writel(val, priv->ioaddr + reg_addr);
}
static u32 netsec_read_reg(struct netsec_priv *priv, u32 reg_addr)
{
return readl(priv->ioaddr + reg_addr);
}
/************* MDIO BUS OPS FOLLOW *************/
#define TIMEOUT_SPINS_MAC 1000
#define TIMEOUT_SECONDARY_MS_MAC 100
static u32 netsec_clk_type(u32 freq)
{
if (freq < MHZ(35))
return NETSEC_GMAC_GAR_REG_CR_25_35_MHZ;
if (freq < MHZ(60))
return NETSEC_GMAC_GAR_REG_CR_35_60_MHZ;
if (freq < MHZ(100))
return NETSEC_GMAC_GAR_REG_CR_60_100_MHZ;
if (freq < MHZ(150))
return NETSEC_GMAC_GAR_REG_CR_100_150_MHZ;
if (freq < MHZ(250))
return NETSEC_GMAC_GAR_REG_CR_150_250_MHZ;
return NETSEC_GMAC_GAR_REG_CR_250_300_MHZ;
}
static int netsec_wait_while_busy(struct netsec_priv *priv, u32 addr, u32 mask)
{
u32 timeout = TIMEOUT_SPINS_MAC;
while (--timeout && netsec_read_reg(priv, addr) & mask)
cpu_relax();
if (timeout)
return 0;
timeout = TIMEOUT_SECONDARY_MS_MAC;
while (--timeout && netsec_read_reg(priv, addr) & mask)
udelay(2000);
if (timeout)
return 0;
pr_err("%s: timeout\n", __func__);
return -ETIMEDOUT;
}
static int netsec_set_mac_reg(struct netsec_priv *priv, u32 addr, u32 value)
{
netsec_write_reg(priv, MAC_REG_DATA, value);
netsec_write_reg(priv, MAC_REG_CMD, addr | NETSEC_GMAC_CMD_ST_WRITE);
return netsec_wait_while_busy(priv,
MAC_REG_CMD, NETSEC_GMAC_CMD_ST_BUSY);
}
static int netsec_get_mac_reg(struct netsec_priv *priv, u32 addr, u32 *read)
{
int ret;
netsec_write_reg(priv, MAC_REG_CMD, addr | NETSEC_GMAC_CMD_ST_READ);
ret = netsec_wait_while_busy(priv,
MAC_REG_CMD, NETSEC_GMAC_CMD_ST_BUSY);
if (ret)
return ret;
*read = netsec_read_reg(priv, MAC_REG_DATA);
return 0;
}
static int netsec_mac_wait_while_busy(struct netsec_priv *priv,
u32 addr, u32 mask)
{
u32 timeout = TIMEOUT_SPINS_MAC;
u32 data;
int ret;
do {
ret = netsec_get_mac_reg(priv, addr, &data);
if (ret)
break;
udelay(1);
} while (--timeout && (data & mask));
if (timeout)
return 0;
timeout = TIMEOUT_SECONDARY_MS_MAC;
do {
udelay(2000);
ret = netsec_get_mac_reg(priv, addr, &data);
if (ret)
break;
cpu_relax();
} while (--timeout && (data & mask));
if (timeout && !ret)
return 0;
return -ETIMEDOUT;
}
static void netsec_cache_invalidate(uintptr_t vaddr, int len)
{
invalidate_dcache_range(rounddown(vaddr, ARCH_DMA_MINALIGN),
roundup(vaddr + len, ARCH_DMA_MINALIGN));
}
static void netsec_cache_flush(uintptr_t vaddr, int len)
{
flush_dcache_range(rounddown(vaddr, ARCH_DMA_MINALIGN),
roundup(vaddr + len, ARCH_DMA_MINALIGN));
}
static void netsec_set_rx_de(struct netsec_priv *priv, u16 idx, void *addr)
{
struct netsec_de *de = &priv->rxde[idx];
u32 attr = (1 << NETSEC_RX_PKT_OWN_FIELD) |
(1 << NETSEC_RX_PKT_FS_FIELD) |
(1 << NETSEC_RX_PKT_LS_FIELD);
if (idx == PKTBUFSRX - 1)
attr |= (1 << NETSEC_RX_PKT_LD_FIELD);
de->data_buf_addr_up = upper_32_bits((dma_addr_t)addr);
de->data_buf_addr_lw = lower_32_bits((dma_addr_t)addr);
de->buf_len_info = PKTSIZE;
de->attr = attr;
dmb();
netsec_cache_flush((uintptr_t)de, sizeof(*de));
}
static void netsec_set_tx_de(struct netsec_priv *priv, void *addr, int len)
{
struct netsec_de *de = &priv->txde[0];
u32 attr;
attr = (1 << NETSEC_TX_SHIFT_OWN_FIELD) |
(1 << NETSEC_TX_SHIFT_PT_FIELD) |
(NETSEC_RING_GMAC << NETSEC_TX_SHIFT_TDRID_FIELD) |
(1 << NETSEC_TX_SHIFT_FS_FIELD) |
(1 << NETSEC_TX_LAST) |
(1 << NETSEC_TX_SHIFT_TRS_FIELD) |
(1 << NETSEC_TX_SHIFT_LD_FIELD);
de->data_buf_addr_up = upper_32_bits((dma_addr_t)addr);
de->data_buf_addr_lw = lower_32_bits((dma_addr_t)addr);
de->buf_len_info = len;
de->attr = attr;
dmb();
netsec_cache_flush((uintptr_t)de, sizeof(*de));
}
static int netsec_get_phy_reg(struct netsec_priv *priv,
int phy_addr, int reg_addr)
{
u32 data;
int ret;
if (phy_addr != 7)
return -EINVAL;
if (netsec_set_mac_reg(priv, GMAC_REG_GAR, NETSEC_GMAC_GAR_REG_GB |
phy_addr << NETSEC_GMAC_GAR_REG_SHIFT_PA |
reg_addr << NETSEC_GMAC_GAR_REG_SHIFT_GR |
(netsec_clk_type(priv->freq) <<
GMAC_REG_SHIFT_CR_GAR)))
return -ETIMEDOUT;
ret = netsec_mac_wait_while_busy(priv, GMAC_REG_GAR,
NETSEC_GMAC_GAR_REG_GB);
if (ret)
return ret;
ret = netsec_get_mac_reg(priv, GMAC_REG_GDR, &data);
if (ret)
return ret;
return data;
}
static int netsec_set_phy_reg(struct netsec_priv *priv,
int phy_addr, int reg_addr, u16 val)
{
int ret;
if (phy_addr != 7)
return -EINVAL;
if (netsec_set_mac_reg(priv, GMAC_REG_GDR, val))
return -ETIMEDOUT;
if (netsec_set_mac_reg(priv, GMAC_REG_GAR,
phy_addr << NETSEC_GMAC_GAR_REG_SHIFT_PA |
reg_addr << NETSEC_GMAC_GAR_REG_SHIFT_GR |
NETSEC_GMAC_GAR_REG_GW | NETSEC_GMAC_GAR_REG_GB |
(netsec_clk_type(priv->freq) <<
GMAC_REG_SHIFT_CR_GAR)))
return -ETIMEDOUT;
ret = netsec_mac_wait_while_busy(priv, GMAC_REG_GAR,
NETSEC_GMAC_GAR_REG_GB);
/* Developerbox implements RTL8211E PHY and there is
* a compatibility problem with F_GMAC4.
* RTL8211E expects MDC clock must be kept toggling for several
* clock cycle with MDIO high before entering the IDLE state.
* To meet this requirement, netsec driver needs to issue dummy
* read(e.g. read PHYID1(offset 0x2) register) right after write.
*/
netsec_get_phy_reg(priv, phy_addr, MII_PHYSID1);
return ret;
}
static int netsec_mac_update_to_phy_state(struct netsec_priv *priv)
{
struct phy_device *phydev = priv->phydev;
u32 value = 0;
value = phydev->duplex ? NETSEC_GMAC_MCR_REG_FULL_DUPLEX_COMMON :
NETSEC_GMAC_MCR_REG_HALF_DUPLEX_COMMON;
if (phydev->speed != SPEED_1000)
value |= NETSEC_MCR_PS;
if (phydev->interface != PHY_INTERFACE_MODE_GMII &&
phydev->speed == SPEED_100)
value |= NETSEC_GMAC_MCR_REG_FES;
value |= NETSEC_GMAC_MCR_REG_CST | NETSEC_GMAC_MCR_REG_JE;
if (phy_interface_is_rgmii(phydev))
value |= NETSEC_GMAC_MCR_REG_IBN;
if (netsec_set_mac_reg(priv, GMAC_REG_MCR, value))
return -ETIMEDOUT;
return 0;
}
static int netsec_start_gmac(struct netsec_priv *priv)
{
u32 value = 0;
int ret;
if (priv->max_speed != SPEED_1000)
value = (NETSEC_GMAC_MCR_REG_CST |
NETSEC_GMAC_MCR_REG_HALF_DUPLEX_COMMON);
if (netsec_set_mac_reg(priv, GMAC_REG_MCR, value))
return -ETIMEDOUT;
if (netsec_set_mac_reg(priv, GMAC_REG_BMR,
NETSEC_GMAC_BMR_REG_RESET))
return -ETIMEDOUT;
/* Wait soft reset */
mdelay(5);
ret = netsec_get_mac_reg(priv, GMAC_REG_BMR, &value);
if (ret)
return ret;
if (value & NETSEC_GMAC_BMR_REG_SWR)
return -EAGAIN;
netsec_write_reg(priv, MAC_REG_DESC_SOFT_RST, 1);
if (netsec_wait_while_busy(priv, MAC_REG_DESC_SOFT_RST, 1))
return -ETIMEDOUT;
netsec_write_reg(priv, MAC_REG_DESC_INIT, 1);
if (netsec_wait_while_busy(priv, MAC_REG_DESC_INIT, 1))
return -ETIMEDOUT;
if (netsec_set_mac_reg(priv, GMAC_REG_BMR,
NETSEC_GMAC_BMR_REG_COMMON))
return -ETIMEDOUT;
if (netsec_set_mac_reg(priv, GMAC_REG_RDLAR,
NETSEC_GMAC_RDLAR_REG_COMMON))
return -ETIMEDOUT;
if (netsec_set_mac_reg(priv, GMAC_REG_TDLAR,
NETSEC_GMAC_TDLAR_REG_COMMON))
return -ETIMEDOUT;
if (netsec_set_mac_reg(priv, GMAC_REG_MFFR, 0x80000001))
return -ETIMEDOUT;
ret = netsec_mac_update_to_phy_state(priv);
if (ret)
return ret;
ret = netsec_get_mac_reg(priv, GMAC_REG_OMR, &value);
if (ret)
return ret;
value |= NETSEC_GMAC_OMR_REG_SR;
value |= NETSEC_GMAC_OMR_REG_ST;
netsec_write_reg(priv, NETSEC_REG_NRM_RX_INTEN_CLR, ~0);
netsec_write_reg(priv, NETSEC_REG_NRM_TX_INTEN_CLR, ~0);
if (netsec_set_mac_reg(priv, GMAC_REG_OMR, value))
return -ETIMEDOUT;
return 0;
}
static int netsec_stop_gmac(struct netsec_priv *priv)
{
u32 value;
int ret;
ret = netsec_get_mac_reg(priv, GMAC_REG_OMR, &value);
if (ret)
return ret;
value &= ~NETSEC_GMAC_OMR_REG_SR;
value &= ~NETSEC_GMAC_OMR_REG_ST;
/* disable all interrupts */
netsec_write_reg(priv, NETSEC_REG_NRM_RX_INTEN_CLR, ~0);
netsec_write_reg(priv, NETSEC_REG_NRM_TX_INTEN_CLR, ~0);
return netsec_set_mac_reg(priv, GMAC_REG_OMR, value);
}
static void netsec_spi_read(char *buf, loff_t len, loff_t offset)
{
struct spi_flash *flash;
flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS, CONFIG_SF_DEFAULT_CS,
CONFIG_SF_DEFAULT_SPEED, CONFIG_SF_DEFAULT_MODE);
spi_flash_read(flash, offset, len, buf);
}
static int netsec_read_rom_hwaddr(struct udevice *dev)
{
struct netsec_priv *priv = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_plat(dev);
char macp[NOR_BLOCK];
netsec_spi_read(macp, sizeof(macp), priv->eeprom_base);
pdata->enetaddr[0] = readb(macp + 3);
pdata->enetaddr[1] = readb(macp + 2);
pdata->enetaddr[2] = readb(macp + 1);
pdata->enetaddr[3] = readb(macp + 0);
pdata->enetaddr[4] = readb(macp + 7);
pdata->enetaddr[5] = readb(macp + 6);
return 0;
}
static int netsec_send(struct udevice *dev, void *packet, int length)
{
struct netsec_priv *priv = dev_get_priv(dev);
u32 val, tout;
val = netsec_read_reg(priv, NETSEC_REG_NRM_TX_STATUS);
netsec_cache_flush((uintptr_t)packet, length);
netsec_set_tx_de(priv, packet, length);
netsec_write_reg(priv, NETSEC_REG_NRM_TX_PKTCNT, 1); /* submit another tx */
val = netsec_read_reg(priv, NETSEC_REG_NRM_TX_PKTCNT);
tout = 10000;
do {
val = netsec_read_reg(priv, NETSEC_REG_NRM_TX_DONE_PKTCNT);
udelay(2);
} while (--tout && !val);
if (!tout) {
val = netsec_read_reg(priv, NETSEC_REG_NRM_TX_PKTCNT);
pr_err("%s: ETIMEDOUT: %dpackets\n", __func__, val);
return -ETIMEDOUT;
}
return 0;
}
static int netsec_free_packet(struct udevice *dev, uchar *packet, int length)
{
struct netsec_priv *priv = dev_get_priv(dev);
netsec_set_rx_de(priv, priv->rxat, net_rx_packets[priv->rxat]);
priv->rxat++;
if (priv->rxat == PKTBUFSRX)
priv->rxat = 0;
return 0;
}
static int netsec_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct netsec_priv *priv = dev_get_priv(dev);
int idx = priv->rxat;
uchar *ptr = net_rx_packets[idx];
struct netsec_de *de = &priv->rxde[idx];
int length = 0;
netsec_cache_invalidate((uintptr_t)de, sizeof(*de));
if (de->attr & (1U << NETSEC_RX_PKT_OWN_FIELD))
return -EAGAIN;
length = de->buf_len_info >> 16;
/* invalidate after DMA is done */
netsec_cache_invalidate((uintptr_t)ptr, length);
*packetp = ptr;
return length;
}
static int _netsec_get_phy_reg(struct mii_dev *bus,
int phy_addr, int devad, int reg_addr)
{
return netsec_get_phy_reg(bus->priv, phy_addr, reg_addr);
}
static int _netsec_set_phy_reg(struct mii_dev *bus,
int phy_addr, int devad, int reg_addr, u16 val)
{
return netsec_set_phy_reg(bus->priv, phy_addr, reg_addr, val);
}
static int netsec_mdiobus_init(struct netsec_priv *priv, const char *name)
{
struct mii_dev *bus = mdio_alloc();
if (!bus)
return -ENOMEM;
bus->read = _netsec_get_phy_reg;
bus->write = _netsec_set_phy_reg;
snprintf(bus->name, sizeof(bus->name), "%s", name);
bus->priv = priv;
return mdio_register(bus);
}
static int netsec_phy_init(struct netsec_priv *priv, void *dev)
{
struct phy_device *phydev;
int ret;
phydev = phy_connect(priv->bus, priv->phy_addr, dev, priv->phy_mode);
phydev->supported &= PHY_GBIT_FEATURES;
if (priv->max_speed) {
ret = phy_set_supported(phydev, priv->max_speed);
if (ret)
return ret;
}
phydev->advertising = phydev->supported;
priv->phydev = phydev;
phy_config(phydev);
return 0;
}
static int netsec_netdev_load_ucode_region(struct netsec_priv *priv, u32 reg,
u32 addr_h, u32 addr_l, u32 size)
{
u64 base = ((u64)addr_h << 32 | addr_l) - EERPROM_MAP_OFFSET;
while (size > 0) {
char buf[NOR_BLOCK];
u32 *ucode = (u32 *)buf;
u64 off;
int i;
off = base % NOR_BLOCK;
base -= off;
netsec_spi_read(buf, sizeof(buf), base);
for (i = off / 4; i < sizeof(buf) / 4 && size > 0; i++, size--)
netsec_write_reg(priv, reg, ucode[i]);
base += NOR_BLOCK;
}
return 0;
}
static int netsec_netdev_load_microcode(struct netsec_priv *priv)
{
u32 addr_h, addr_l, size;
char buf[NOR_BLOCK];
u32 *ucinfo = (u32 *)buf;
int err;
netsec_spi_read(buf, sizeof(buf), priv->eeprom_base);
addr_h = ucinfo[NETSEC_EEPROM_HM_ME_ADDRESS_H >> 2];
addr_l = ucinfo[NETSEC_EEPROM_HM_ME_ADDRESS_L >> 2];
size = ucinfo[NETSEC_EEPROM_HM_ME_SIZE >> 2];
err = netsec_netdev_load_ucode_region(priv, NETSEC_REG_DMAC_HM_CMD_BUF,
addr_h, addr_l, size);
if (err)
return err;
addr_h = ucinfo[NETSEC_EEPROM_MH_ME_ADDRESS_H >> 2];
addr_l = ucinfo[NETSEC_EEPROM_MH_ME_ADDRESS_L >> 2];
size = ucinfo[NETSEC_EEPROM_MH_ME_SIZE >> 2];
err = netsec_netdev_load_ucode_region(priv, NETSEC_REG_DMAC_MH_CMD_BUF,
addr_h, addr_l, size);
if (err)
return err;
addr_h = 0;
addr_l = ucinfo[NETSEC_EEPROM_PKT_ME_ADDRESS >> 2];
size = ucinfo[NETSEC_EEPROM_PKT_ME_SIZE >> 2];
err = netsec_netdev_load_ucode_region(priv, NETSEC_REG_PKT_CMD_BUF,
addr_h, addr_l, size);
if (err)
return err;
return 0;
}
void netsec_pre_init_microengine(struct netsec_priv *priv)
{
u32 data;
/* Remove dormant settings */
data = netsec_get_phy_reg(priv, priv->phy_addr, MII_BMCR);
data &= ~BMCR_PDOWN;
data |= BMCR_ISOLATE;
netsec_set_phy_reg(priv, priv->phy_addr, MII_BMCR, data);
mdelay(100);
/* Put phy in loopback mode to guarantee RXCLK input */
data |= BMCR_LOOPBACK;
netsec_set_phy_reg(priv, priv->phy_addr, MII_BMCR, data);
mdelay(100);
}
void netsec_post_init_microengine(struct netsec_priv *priv)
{
u32 data;
/* Get phy back to normal operation */
data = netsec_get_phy_reg(priv, priv->phy_addr, MII_BMCR);
data &= ~BMCR_LOOPBACK;
netsec_set_phy_reg(priv, priv->phy_addr, MII_BMCR, data);
mdelay(100);
/* Apply software reset */
data |= BMCR_RESET;
netsec_set_phy_reg(priv, priv->phy_addr, MII_BMCR, data);
mdelay(100);
}
static int netsec_reset_hardware(struct netsec_priv *priv, bool load_ucode)
{
u32 value;
int err;
netsec_write_reg(priv, NETSEC_REG_CLK_EN, 0x24);
/* stop DMA engines */
if (!netsec_read_reg(priv, NETSEC_REG_ADDR_DIS_CORE)) {
netsec_write_reg(priv, NETSEC_REG_DMA_HM_CTRL,
NETSEC_DMA_CTRL_REG_STOP);
netsec_write_reg(priv, NETSEC_REG_DMA_MH_CTRL,
NETSEC_DMA_CTRL_REG_STOP);
value = 100;
while (netsec_read_reg(priv, NETSEC_REG_DMA_HM_CTRL) &
NETSEC_DMA_CTRL_REG_STOP) {
udelay(1000);
if (--value == 0) {
pr_err("%s:%d timeout!\n", __func__, __LINE__);
break;
}
}
value = 100;
while (netsec_read_reg(priv, NETSEC_REG_DMA_MH_CTRL) &
NETSEC_DMA_CTRL_REG_STOP) {
udelay(1000);
if (--value == 0) {
pr_err("%s:%d timeout!\n", __func__, __LINE__);
break;
}
}
}
netsec_set_mac_reg(priv, GMAC_REG_BMR, NETSEC_GMAC_BMR_REG_RESET);
netsec_write_reg(priv, NETSEC_REG_SOFT_RST, NETSEC_SOFT_RST_REG_RESET);
netsec_write_reg(priv, NETSEC_REG_SOFT_RST, NETSEC_SOFT_RST_REG_RUN);
netsec_write_reg(priv, NETSEC_REG_COM_INIT, NETSEC_COM_INIT_REG_ALL);
value = 100;
while (netsec_read_reg(priv, NETSEC_REG_COM_INIT) != 0) {
udelay(1000);
if (--value == 0) {
pr_err("%s:%d COM_INIT timeout!\n", __func__, __LINE__);
break;
}
}
/* MAC desc init */
netsec_write_reg(priv, MAC_REG_DESC_INIT, 1);
netsec_wait_while_busy(priv, MAC_REG_DESC_INIT, 1);
/* set MAC_INTF_SEL */
netsec_write_reg(priv, MAC_REG_INTF_SEL, 1);
netsec_write_reg(priv, NETSEC_REG_CLK_EN, 1 << 5);
/* set desc_start addr */
netsec_write_reg(priv, NETSEC_REG_NRM_RX_DESC_START_UP,
upper_32_bits((dma_addr_t)priv->rxde));
netsec_write_reg(priv, NETSEC_REG_NRM_RX_DESC_START_LW,
lower_32_bits((dma_addr_t)priv->rxde));
netsec_write_reg(priv, NETSEC_REG_NRM_TX_DESC_START_UP,
upper_32_bits((dma_addr_t)priv->txde));
netsec_write_reg(priv, NETSEC_REG_NRM_TX_DESC_START_LW,
lower_32_bits((dma_addr_t)priv->txde));
/* set normal tx dring ring config */
netsec_write_reg(priv, NETSEC_REG_NRM_TX_CONFIG,
1 << NETSEC_REG_DESC_ENDIAN);
netsec_write_reg(priv, NETSEC_REG_NRM_RX_CONFIG,
1 << NETSEC_REG_DESC_ENDIAN);
if (load_ucode) {
err = netsec_netdev_load_microcode(priv);
if (err) {
pr_err("%s: failed to load microcode (%d)\n",
__func__, err);
return err;
}
}
/* set desc_start addr */
netsec_write_reg(priv, NETSEC_REG_NRM_RX_DESC_START_UP,
upper_32_bits((dma_addr_t)priv->rxde));
netsec_write_reg(priv, NETSEC_REG_NRM_RX_DESC_START_LW,
lower_32_bits((dma_addr_t)priv->rxde));
netsec_write_reg(priv, NETSEC_REG_NRM_TX_DESC_START_UP,
upper_32_bits((dma_addr_t)priv->txde));
netsec_write_reg(priv, NETSEC_REG_NRM_TX_DESC_START_LW,
lower_32_bits((dma_addr_t)priv->txde));
netsec_write_reg(priv, NETSEC_REG_CLK_EN, 1 << 5);
/* start DMA engines */
netsec_write_reg(priv, NETSEC_REG_DMA_TMR_CTRL, priv->freq / 1000000 - 1);
netsec_pre_init_microengine(priv);
netsec_write_reg(priv, NETSEC_REG_ADDR_DIS_CORE, 0);
mdelay(100);
if (!(netsec_read_reg(priv, NETSEC_REG_TOP_STATUS) &
NETSEC_TOP_IRQ_REG_ME_START)) {
pr_err("microengine start failed\n");
return -ENXIO;
}
netsec_post_init_microengine(priv);
/* clear microcode load end status */
netsec_write_reg(priv, NETSEC_REG_TOP_STATUS,
NETSEC_TOP_IRQ_REG_ME_START);
netsec_write_reg(priv, NETSEC_REG_CLK_EN, 1 << 5);
value = netsec_read_reg(priv, NETSEC_REG_PKT_CTRL);
value |= NETSEC_PKT_CTRL_REG_MODE_NRM;
/* change to normal mode */
netsec_write_reg(priv, NETSEC_REG_DMA_MH_CTRL, MH_CTRL__MODE_TRANS);
netsec_write_reg(priv, NETSEC_REG_PKT_CTRL, value);
value = 100;
while ((netsec_read_reg(priv, NETSEC_REG_MODE_TRANS_COMP_STATUS) &
NETSEC_MODE_TRANS_COMP_IRQ_T2N) == 0) {
udelay(1000);
if (--value == 0) {
value = netsec_read_reg(priv, NETSEC_REG_MODE_TRANS_COMP_STATUS);
pr_err("%s:%d timeout! val=%x\n", __func__, __LINE__, value);
break;
}
}
/* clear any pending EMPTY/ERR irq status */
netsec_write_reg(priv, NETSEC_REG_NRM_TX_STATUS, ~0);
/* Disable TX & RX intr */
netsec_write_reg(priv, NETSEC_REG_INTEN_CLR, ~0);
return 0;
}
static void netsec_stop(struct udevice *dev)
{
struct netsec_priv *priv = dev_get_priv(dev);
netsec_write_reg(priv, NETSEC_REG_ADDR_DIS_CORE, 7);
netsec_stop_gmac(priv);
phy_shutdown(priv->phydev);
netsec_reset_hardware(priv, false);
}
static int netsec_start(struct udevice *dev)
{
struct netsec_priv *priv = dev_get_priv(dev);
int i;
phy_startup(priv->phydev);
netsec_start_gmac(priv);
priv->rxat = 0;
for (i = 0; i < PKTBUFSRX; i++)
netsec_set_rx_de(priv, i, net_rx_packets[i]);
return 0;
}
static int netsec_of_to_plat(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct netsec_priv *priv = dev_get_priv(dev);
struct ofnode_phandle_args phandle_args;
pdata->iobase = dev_read_addr_index(dev, 0);
priv->eeprom_base = dev_read_addr_index(dev, 1) - EERPROM_MAP_OFFSET;
pdata->phy_interface = dev_read_phy_mode(dev);
if (pdata->phy_interface == PHY_INTERFACE_MODE_NA)
return -EINVAL;
if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
&phandle_args))
priv->phy_addr = ofnode_read_u32_default(phandle_args.node, "reg", 7);
else
priv->phy_addr = 7;
pdata->max_speed = dev_read_u32_default(dev, "max-speed", SPEED_1000);
priv->ioaddr = pdata->iobase;
priv->phy_mode = pdata->phy_interface;
priv->max_speed = pdata->max_speed;
priv->freq = 250000000UL;
return 0;
}
static int netsec_probe(struct udevice *dev)
{
struct netsec_priv *priv = dev_get_priv(dev);
int ret;
netsec_reset_hardware(priv, true);
ret = netsec_mdiobus_init(priv, dev->name);
if (ret) {
pr_err("Failed to initialize mdiobus: %d\n", ret);
return ret;
}
priv->bus = miiphy_get_dev_by_name(dev->name);
ret = netsec_phy_init(priv, dev);
if (ret) {
pr_err("Failed to initialize phy: %d\n", ret);
goto out_mdiobus_release;
}
return 0;
out_mdiobus_release:
mdio_unregister(priv->bus);
mdio_free(priv->bus);
return ret;
}
static int netsec_remove(struct udevice *dev)
{
struct netsec_priv *priv = dev_get_priv(dev);
free(priv->phydev);
mdio_unregister(priv->bus);
mdio_free(priv->bus);
return 0;
}
static const struct eth_ops netsec_ops = {
.start = netsec_start,
.stop = netsec_stop,
.send = netsec_send,
.recv = netsec_recv,
.free_pkt = netsec_free_packet,
.read_rom_hwaddr = netsec_read_rom_hwaddr,
};
static const struct udevice_id netsec_ids[] = {
{
.compatible = "socionext,synquacer-netsec",
},
{}
};
U_BOOT_DRIVER(ave) = {
.name = "synquacer_netsec",
.id = UCLASS_ETH,
.of_match = netsec_ids,
.probe = netsec_probe,
.remove = netsec_remove,
.of_to_plat = netsec_of_to_plat,
.ops = &netsec_ops,
.priv_auto = sizeof(struct netsec_priv),
.plat_auto = sizeof(struct eth_pdata),
};