--- /dev/null
+// 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 udevice *new;
+ struct spi_flash *flash;
+
+ spi_flash_probe_bus_cs(CONFIG_SF_DEFAULT_BUS, CONFIG_SF_DEFAULT_CS,
+ CONFIG_SF_DEFAULT_SPEED, CONFIG_SF_DEFAULT_MODE, &new);
+ flash = dev_get_uclass_priv(new);
+
+ 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;
+ const char *phy_mode;
+
+ pdata->iobase = dev_read_addr_index(dev, 0);
+ priv->eeprom_base = dev_read_addr_index(dev, 1) - EERPROM_MAP_OFFSET;
+
+ pdata->phy_interface = -1;
+ phy_mode = dev_read_prop(dev, "phy-mode", NULL);
+ if (phy_mode)
+ pdata->phy_interface = phy_get_interface_by_name(phy_mode);
+ if (pdata->phy_interface == -1) {
+ pr_err("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
+ 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;
+}
+
+#define SMMU_SCR0_SHCFG_INNER (0x2 << 22)
+#define SMMU_SCR0_MTCFG (0x1 << 20)
+#define SMMU_SCR0_MEMATTR_INNER_OUTER_WB (0xf << 16)
+
+static int netsec_probe(struct udevice *dev)
+{
+ struct netsec_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ writel(SMMU_SCR0_SHCFG_INNER | SMMU_SCR0_MTCFG | SMMU_SCR0_MEMATTR_INNER_OUTER_WB,
+ (phys_addr_t)0x52E00000);
+
+ 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),
+};
projects / platform / kernel / u-boot.git / commitdiff