diff options
Diffstat (limited to 'drivers/net/ti')
| -rw-r--r-- | drivers/net/ti/Kconfig | 20 | ||||
| -rw-r--r-- | drivers/net/ti/Makefile | 7 | ||||
| -rw-r--r-- | drivers/net/ti/cpsw-common.c | 121 | ||||
| -rw-r--r-- | drivers/net/ti/cpsw.c | 1378 | ||||
| -rw-r--r-- | drivers/net/ti/cpsw_mdio.c | 203 | ||||
| -rw-r--r-- | drivers/net/ti/cpsw_mdio.h | 18 | ||||
| -rw-r--r-- | drivers/net/ti/davinci_emac.c | 901 | ||||
| -rw-r--r-- | drivers/net/ti/davinci_emac.h | 304 | ||||
| -rw-r--r-- | drivers/net/ti/keystone_net.c | 801 |
9 files changed, 3753 insertions, 0 deletions
diff --git a/drivers/net/ti/Kconfig b/drivers/net/ti/Kconfig new file mode 100644 index 0000000000..82bc9f5d03 --- /dev/null +++ b/drivers/net/ti/Kconfig @@ -0,0 +1,20 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ + +config DRIVER_TI_CPSW + bool "TI Common Platform Ethernet Switch" + select PHYLIB + help + This driver supports the TI three port switch gigabit ethernet + subsystem found in the TI SoCs. + +config DRIVER_TI_EMAC + bool "TI Davinci EMAC" + help + Support for davinci emac + +config DRIVER_TI_KEYSTONE_NET + bool "TI Keystone 2 Ethernet" + help + This driver supports the TI Keystone 2 Ethernet subsystem diff --git a/drivers/net/ti/Makefile b/drivers/net/ti/Makefile new file mode 100644 index 0000000000..ee3e4eb5d6 --- /dev/null +++ b/drivers/net/ti/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ + +obj-$(CONFIG_DRIVER_TI_CPSW) += cpsw.o cpsw-common.o cpsw_mdio.o +obj-$(CONFIG_DRIVER_TI_EMAC) += davinci_emac.o +obj-$(CONFIG_DRIVER_TI_KEYSTONE_NET) += keystone_net.o cpsw_mdio.o diff --git a/drivers/net/ti/cpsw-common.c b/drivers/net/ti/cpsw-common.c new file mode 100644 index 0000000000..6c8ddbd936 --- /dev/null +++ b/drivers/net/ti/cpsw-common.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * CPSW common - libs used across TI ethernet devices. + * + * Copyright (C) 2016, Texas Instruments, Incorporated + */ + +#include <common.h> +#include <dm.h> +#include <environment.h> +#include <fdt_support.h> +#include <asm/io.h> +#include <cpsw.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id)) + +static int davinci_emac_3517_get_macid(struct udevice *dev, u16 offset, + int slave, u8 *mac_addr) +{ + void *fdt = (void *)gd->fdt_blob; + int node = dev_of_offset(dev); + u32 macid_lsb; + u32 macid_msb; + fdt32_t gmii = 0; + int syscon; + u32 addr; + + syscon = fdtdec_lookup_phandle(fdt, node, "syscon"); + if (syscon < 0) { + pr_err("Syscon offset not found\n"); + return -ENOENT; + } + + addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii), + sizeof(u32), MAP_NOCACHE); + if (addr == FDT_ADDR_T_NONE) { + pr_err("Not able to get syscon address to get mac efuse address\n"); + return -ENOENT; + } + + addr += CTRL_MAC_REG(offset, slave); + + /* try reading mac address from efuse */ + macid_lsb = readl(addr); + macid_msb = readl(addr + 4); + + mac_addr[0] = (macid_msb >> 16) & 0xff; + mac_addr[1] = (macid_msb >> 8) & 0xff; + mac_addr[2] = macid_msb & 0xff; + mac_addr[3] = (macid_lsb >> 16) & 0xff; + mac_addr[4] = (macid_lsb >> 8) & 0xff; + mac_addr[5] = macid_lsb & 0xff; + + return 0; +} + +static int cpsw_am33xx_cm_get_macid(struct udevice *dev, u16 offset, int slave, + u8 *mac_addr) +{ + void *fdt = (void *)gd->fdt_blob; + int node = dev_of_offset(dev); + u32 macid_lo; + u32 macid_hi; + fdt32_t gmii = 0; + int syscon; + u32 addr; + + syscon = fdtdec_lookup_phandle(fdt, node, "syscon"); + if (syscon < 0) { + pr_err("Syscon offset not found\n"); + return -ENOENT; + } + + addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii), + sizeof(u32), MAP_NOCACHE); + if (addr == FDT_ADDR_T_NONE) { + pr_err("Not able to get syscon address to get mac efuse address\n"); + return -ENOENT; + } + + addr += CTRL_MAC_REG(offset, slave); + + /* try reading mac address from efuse */ + macid_lo = readl(addr); + macid_hi = readl(addr + 4); + + mac_addr[5] = (macid_lo >> 8) & 0xff; + mac_addr[4] = macid_lo & 0xff; + mac_addr[3] = (macid_hi >> 24) & 0xff; + mac_addr[2] = (macid_hi >> 16) & 0xff; + mac_addr[1] = (macid_hi >> 8) & 0xff; + mac_addr[0] = macid_hi & 0xff; + + return 0; +} + +int ti_cm_get_macid(struct udevice *dev, int slave, u8 *mac_addr) +{ + if (of_machine_is_compatible("ti,dm8148")) + return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); + + if (of_machine_is_compatible("ti,am33xx")) + return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); + + if (device_is_compatible(dev, "ti,am3517-emac")) + return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr); + + if (device_is_compatible(dev, "ti,dm816-emac")) + return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr); + + if (of_machine_is_compatible("ti,am43")) + return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); + + if (of_machine_is_compatible("ti,dra7")) + return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr); + + dev_err(dev, "incompatible machine/device type for reading mac address\n"); + return -ENOENT; +} diff --git a/drivers/net/ti/cpsw.c b/drivers/net/ti/cpsw.c new file mode 100644 index 0000000000..f5fd02efe1 --- /dev/null +++ b/drivers/net/ti/cpsw.c @@ -0,0 +1,1378 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * CPSW Ethernet Switch Driver + * + * Copyright (C) 2010-2018 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#include <common.h> +#include <command.h> +#include <net.h> +#include <miiphy.h> +#include <malloc.h> +#include <net.h> +#include <netdev.h> +#include <cpsw.h> +#include <linux/errno.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <phy.h> +#include <asm/arch/cpu.h> +#include <dm.h> +#include <fdt_support.h> + +#include "cpsw_mdio.h" + +DECLARE_GLOBAL_DATA_PTR; + +#define BITMASK(bits) (BIT(bits) - 1) +#define NUM_DESCS (PKTBUFSRX * 2) +#define PKT_MIN 60 +#define PKT_MAX (1500 + 14 + 4 + 4) +#define CLEAR_BIT 1 +#define GIGABITEN BIT(7) +#define FULLDUPLEXEN BIT(0) +#define MIIEN BIT(15) + +/* reg offset */ +#define CPSW_HOST_PORT_OFFSET 0x108 +#define CPSW_SLAVE0_OFFSET 0x208 +#define CPSW_SLAVE1_OFFSET 0x308 +#define CPSW_SLAVE_SIZE 0x100 +#define CPSW_CPDMA_OFFSET 0x800 +#define CPSW_HW_STATS 0x900 +#define CPSW_STATERAM_OFFSET 0xa00 +#define CPSW_CPTS_OFFSET 0xc00 +#define CPSW_ALE_OFFSET 0xd00 +#define CPSW_SLIVER0_OFFSET 0xd80 +#define CPSW_SLIVER1_OFFSET 0xdc0 +#define CPSW_BD_OFFSET 0x2000 +#define CPSW_MDIO_DIV 0xff + +#define AM335X_GMII_SEL_OFFSET 0x630 + +/* DMA Registers */ +#define CPDMA_TXCONTROL 0x004 +#define CPDMA_RXCONTROL 0x014 +#define CPDMA_SOFTRESET 0x01c +#define CPDMA_RXFREE 0x0e0 +#define CPDMA_TXHDP_VER1 0x100 +#define CPDMA_TXHDP_VER2 0x200 +#define CPDMA_RXHDP_VER1 0x120 +#define CPDMA_RXHDP_VER2 0x220 +#define CPDMA_TXCP_VER1 0x140 +#define CPDMA_TXCP_VER2 0x240 +#define CPDMA_RXCP_VER1 0x160 +#define CPDMA_RXCP_VER2 0x260 + +/* Descriptor mode bits */ +#define CPDMA_DESC_SOP BIT(31) +#define CPDMA_DESC_EOP BIT(30) +#define CPDMA_DESC_OWNER BIT(29) +#define CPDMA_DESC_EOQ BIT(28) + +/* + * This timeout definition is a worst-case ultra defensive measure against + * unexpected controller lock ups. Ideally, we should never ever hit this + * scenario in practice. + */ +#define CPDMA_TIMEOUT 100 /* msecs */ + +struct cpsw_regs { + u32 id_ver; + u32 control; + u32 soft_reset; + u32 stat_port_en; + u32 ptype; +}; + +struct cpsw_slave_regs { + u32 max_blks; + u32 blk_cnt; + u32 flow_thresh; + u32 port_vlan; + u32 tx_pri_map; +#ifdef CONFIG_AM33XX + u32 gap_thresh; +#elif defined(CONFIG_TI814X) + u32 ts_ctl; + u32 ts_seq_ltype; + u32 ts_vlan; +#endif + u32 sa_lo; + u32 sa_hi; +}; + +struct cpsw_host_regs { + u32 max_blks; + u32 blk_cnt; + u32 flow_thresh; + u32 port_vlan; + u32 tx_pri_map; + u32 cpdma_tx_pri_map; + u32 cpdma_rx_chan_map; +}; + +struct cpsw_sliver_regs { + u32 id_ver; + u32 mac_control; + u32 mac_status; + u32 soft_reset; + u32 rx_maxlen; + u32 __reserved_0; + u32 rx_pause; + u32 tx_pause; + u32 __reserved_1; + u32 rx_pri_map; +}; + +#define ALE_ENTRY_BITS 68 +#define ALE_ENTRY_WORDS DIV_ROUND_UP(ALE_ENTRY_BITS, 32) + +/* ALE Registers */ +#define ALE_CONTROL 0x08 +#define ALE_UNKNOWNVLAN 0x18 +#define ALE_TABLE_CONTROL 0x20 +#define ALE_TABLE 0x34 +#define ALE_PORTCTL 0x40 + +#define ALE_TABLE_WRITE BIT(31) + +#define ALE_TYPE_FREE 0 +#define ALE_TYPE_ADDR 1 +#define ALE_TYPE_VLAN 2 +#define ALE_TYPE_VLAN_ADDR 3 + +#define ALE_UCAST_PERSISTANT 0 +#define ALE_UCAST_UNTOUCHED 1 +#define ALE_UCAST_OUI 2 +#define ALE_UCAST_TOUCHED 3 + +#define ALE_MCAST_FWD 0 +#define ALE_MCAST_BLOCK_LEARN_FWD 1 +#define ALE_MCAST_FWD_LEARN 2 +#define ALE_MCAST_FWD_2 3 + +enum cpsw_ale_port_state { + ALE_PORT_STATE_DISABLE = 0x00, + ALE_PORT_STATE_BLOCK = 0x01, + ALE_PORT_STATE_LEARN = 0x02, + ALE_PORT_STATE_FORWARD = 0x03, +}; + +/* ALE unicast entry flags - passed into cpsw_ale_add_ucast() */ +#define ALE_SECURE 1 +#define ALE_BLOCKED 2 + +struct cpsw_slave { + struct cpsw_slave_regs *regs; + struct cpsw_sliver_regs *sliver; + int slave_num; + u32 mac_control; + struct cpsw_slave_data *data; +}; + +struct cpdma_desc { + /* hardware fields */ + u32 hw_next; + u32 hw_buffer; + u32 hw_len; + u32 hw_mode; + /* software fields */ + u32 sw_buffer; + u32 sw_len; +}; + +struct cpdma_chan { + struct cpdma_desc *head, *tail; + void *hdp, *cp, *rxfree; +}; + +/* AM33xx SoC specific definitions for the CONTROL port */ +#define AM33XX_GMII_SEL_MODE_MII 0 +#define AM33XX_GMII_SEL_MODE_RMII 1 +#define AM33XX_GMII_SEL_MODE_RGMII 2 + +#define AM33XX_GMII_SEL_RGMII1_IDMODE BIT(4) +#define AM33XX_GMII_SEL_RGMII2_IDMODE BIT(5) +#define AM33XX_GMII_SEL_RMII1_IO_CLK_EN BIT(6) +#define AM33XX_GMII_SEL_RMII2_IO_CLK_EN BIT(7) + +#define GMII_SEL_MODE_MASK 0x3 + +#define desc_write(desc, fld, val) __raw_writel((u32)(val), &(desc)->fld) +#define desc_read(desc, fld) __raw_readl(&(desc)->fld) +#define desc_read_ptr(desc, fld) ((void *)__raw_readl(&(desc)->fld)) + +#define chan_write(chan, fld, val) __raw_writel((u32)(val), (chan)->fld) +#define chan_read(chan, fld) __raw_readl((chan)->fld) +#define chan_read_ptr(chan, fld) ((void *)__raw_readl((chan)->fld)) + +#define for_active_slave(slave, priv) \ + slave = (priv)->slaves + (priv)->data.active_slave; if (slave) +#define for_each_slave(slave, priv) \ + for (slave = (priv)->slaves; slave != (priv)->slaves + \ + (priv)->data.slaves; slave++) + +struct cpsw_priv { +#ifdef CONFIG_DM_ETH + struct udevice *dev; +#else + struct eth_device *dev; +#endif + struct cpsw_platform_data data; + int host_port; + + struct cpsw_regs *regs; + void *dma_regs; + struct cpsw_host_regs *host_port_regs; + void *ale_regs; + + struct cpdma_desc *descs; + struct cpdma_desc *desc_free; + struct cpdma_chan rx_chan, tx_chan; + + struct cpsw_slave *slaves; + struct phy_device *phydev; + struct mii_dev *bus; + + u32 phy_mask; +}; + +static inline int cpsw_ale_get_field(u32 *ale_entry, u32 start, u32 bits) +{ + int idx; + + idx = start / 32; + start -= idx * 32; + idx = 2 - idx; /* flip */ + return (ale_entry[idx] >> start) & BITMASK(bits); +} + +static inline void cpsw_ale_set_field(u32 *ale_entry, u32 start, u32 bits, + u32 value) +{ + int idx; + + value &= BITMASK(bits); + idx = start / 32; + start -= idx * 32; + idx = 2 - idx; /* flip */ + ale_entry[idx] &= ~(BITMASK(bits) << start); + ale_entry[idx] |= (value << start); +} + +#define DEFINE_ALE_FIELD(name, start, bits) \ +static inline int cpsw_ale_get_##name(u32 *ale_entry) \ +{ \ + return cpsw_ale_get_field(ale_entry, start, bits); \ +} \ +static inline void cpsw_ale_set_##name(u32 *ale_entry, u32 value) \ +{ \ + cpsw_ale_set_field(ale_entry, start, bits, value); \ +} + +DEFINE_ALE_FIELD(entry_type, 60, 2) +DEFINE_ALE_FIELD(mcast_state, 62, 2) +DEFINE_ALE_FIELD(port_mask, 66, 3) +DEFINE_ALE_FIELD(ucast_type, 62, 2) +DEFINE_ALE_FIELD(port_num, 66, 2) +DEFINE_ALE_FIELD(blocked, 65, 1) +DEFINE_ALE_FIELD(secure, 64, 1) +DEFINE_ALE_FIELD(mcast, 40, 1) + +/* The MAC address field in the ALE entry cannot be macroized as above */ +static inline void cpsw_ale_get_addr(u32 *ale_entry, u8 *addr) +{ + int i; + + for (i = 0; i < 6; i++) + addr[i] = cpsw_ale_get_field(ale_entry, 40 - 8*i, 8); +} + +static inline void cpsw_ale_set_addr(u32 *ale_entry, const u8 *addr) +{ + int i; + + for (i = 0; i < 6; i++) + cpsw_ale_set_field(ale_entry, 40 - 8*i, 8, addr[i]); +} + +static int cpsw_ale_read(struct cpsw_priv *priv, int idx, u32 *ale_entry) +{ + int i; + + __raw_writel(idx, priv->ale_regs + ALE_TABLE_CONTROL); + + for (i = 0; i < ALE_ENTRY_WORDS; i++) + ale_entry[i] = __raw_readl(priv->ale_regs + ALE_TABLE + 4 * i); + + return idx; +} + +static int cpsw_ale_write(struct cpsw_priv *priv, int idx, u32 *ale_entry) +{ + int i; + + for (i = 0; i < ALE_ENTRY_WORDS; i++) + __raw_writel(ale_entry[i], priv->ale_regs + ALE_TABLE + 4 * i); + + __raw_writel(idx | ALE_TABLE_WRITE, priv->ale_regs + ALE_TABLE_CONTROL); + + return idx; +} + +static int cpsw_ale_match_addr(struct cpsw_priv *priv, const u8 *addr) +{ + u32 ale_entry[ALE_ENTRY_WORDS]; + int type, idx; + + for (idx = 0; idx < priv->data.ale_entries; idx++) { + u8 entry_addr[6]; + + cpsw_ale_read(priv, idx, ale_entry); + type = cpsw_ale_get_entry_type(ale_entry); + if (type != ALE_TYPE_ADDR && type != ALE_TYPE_VLAN_ADDR) + continue; + cpsw_ale_get_addr(ale_entry, entry_addr); + if (memcmp(entry_addr, addr, 6) == 0) + return idx; + } + return -ENOENT; +} + +static int cpsw_ale_match_free(struct cpsw_priv *priv) +{ + u32 ale_entry[ALE_ENTRY_WORDS]; + int type, idx; + + for (idx = 0; idx < priv->data.ale_entries; idx++) { + cpsw_ale_read(priv, idx, ale_entry); + type = cpsw_ale_get_entry_type(ale_entry); + if (type == ALE_TYPE_FREE) + return idx; + } + return -ENOENT; +} + +static int cpsw_ale_find_ageable(struct cpsw_priv *priv) +{ + u32 ale_entry[ALE_ENTRY_WORDS]; + int type, idx; + + for (idx = 0; idx < priv->data.ale_entries; idx++) { + cpsw_ale_read(priv, idx, ale_entry); + type = cpsw_ale_get_entry_type(ale_entry); + if (type != ALE_TYPE_ADDR && type != ALE_TYPE_VLAN_ADDR) + continue; + if (cpsw_ale_get_mcast(ale_entry)) + continue; + type = cpsw_ale_get_ucast_type(ale_entry); + if (type != ALE_UCAST_PERSISTANT && + type != ALE_UCAST_OUI) + return idx; + } + return -ENOENT; +} + +static int cpsw_ale_add_ucast(struct cpsw_priv *priv, const u8 *addr, + int port, int flags) +{ + u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; + int idx; + + cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR); + cpsw_ale_set_addr(ale_entry, addr); + cpsw_ale_set_ucast_type(ale_entry, ALE_UCAST_PERSISTANT); + cpsw_ale_set_secure(ale_entry, (flags & ALE_SECURE) ? 1 : 0); + cpsw_ale_set_blocked(ale_entry, (flags & ALE_BLOCKED) ? 1 : 0); + cpsw_ale_set_port_num(ale_entry, port); + + idx = cpsw_ale_match_addr(priv, addr); + if (idx < 0) + idx = cpsw_ale_match_free(priv); + if (idx < 0) + idx = cpsw_ale_find_ageable(priv); + if (idx < 0) + return -ENOMEM; + + cpsw_ale_write(priv, idx, ale_entry); + return 0; +} + +static int cpsw_ale_add_mcast(struct cpsw_priv *priv, const u8 *addr, + int port_mask) +{ + u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; + int idx, mask; + + idx = cpsw_ale_match_addr(priv, addr); + if (idx >= 0) + cpsw_ale_read(priv, idx, ale_entry); + + cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR); + cpsw_ale_set_addr(ale_entry, addr); + cpsw_ale_set_mcast_state(ale_entry, ALE_MCAST_FWD_2); + + mask = cpsw_ale_get_port_mask(ale_entry); + port_mask |= mask; + cpsw_ale_set_port_mask(ale_entry, port_mask); + + if (idx < 0) + idx = cpsw_ale_match_free(priv); + if (idx < 0) + idx = cpsw_ale_find_ageable(priv); + if (idx < 0) + return -ENOMEM; + + cpsw_ale_write(priv, idx, ale_entry); + return 0; +} + +static inline void cpsw_ale_control(struct cpsw_priv *priv, int bit, int val) +{ + u32 tmp, mask = BIT(bit); + + tmp = __raw_readl(priv->ale_regs + ALE_CONTROL); + tmp &= ~mask; + tmp |= val ? mask : 0; + __raw_writel(tmp, priv->ale_regs + ALE_CONTROL); +} + +#define cpsw_ale_enable(priv, val) cpsw_ale_control(priv, 31, val) +#define cpsw_ale_clear(priv, val) cpsw_ale_control(priv, 30, val) +#define cpsw_ale_vlan_aware(priv, val) cpsw_ale_control(priv, 2, val) + +static inline void cpsw_ale_port_state(struct cpsw_priv *priv, int port, + int val) +{ + int offset = ALE_PORTCTL + 4 * port; + u32 tmp, mask = 0x3; + + tmp = __raw_readl(priv->ale_regs + offset); + tmp &= ~mask; + tmp |= val & mask; + __raw_writel(tmp, priv->ale_regs + offset); +} + +/* Set a self-clearing bit in a register, and wait for it to clear */ +static inline void setbit_and_wait_for_clear32(void *addr) +{ + __raw_writel(CLEAR_BIT, addr); + while (__raw_readl(addr) & CLEAR_BIT) + ; +} + +#define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \ + ((mac)[2] << 16) | ((mac)[3] << 24)) +#define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8)) + +static void cpsw_set_slave_mac(struct cpsw_slave *slave, + struct cpsw_priv *priv) +{ +#ifdef CONFIG_DM_ETH + struct eth_pdata *pdata = dev_get_platdata(priv->dev); + + writel(mac_hi(pdata->enetaddr), &slave->regs->sa_hi); + writel(mac_lo(pdata->enetaddr), &slave->regs->sa_lo); +#else + __raw_writel(mac_hi(priv->dev->enetaddr), &slave->regs->sa_hi); + __raw_writel(mac_lo(priv->dev->enetaddr), &slave->regs->sa_lo); +#endif +} + +static int cpsw_slave_update_link(struct cpsw_slave *slave, + struct cpsw_priv *priv, int *link) +{ + struct phy_device *phy; + u32 mac_control = 0; + int ret = -ENODEV; + + phy = priv->phydev; + if (!phy) + goto out; + + ret = phy_startup(phy); + if (ret) + goto out; + + if (link) + *link = phy->link; + + if (phy->link) { /* link up */ + mac_control = priv->data.mac_control; + if (phy->speed == 1000) + mac_control |= GIGABITEN; + if (phy->duplex == DUPLEX_FULL) + mac_control |= FULLDUPLEXEN; + if (phy->speed == 100) + mac_control |= MIIEN; + } + + if (mac_control == slave->mac_control) + goto out; + + if (mac_control) { + printf("link up on port %d, speed %d, %s duplex\n", + slave->slave_num, phy->speed, + (phy->duplex == DUPLEX_FULL) ? "full" : "half"); + } else { + printf("link down on port %d\n", slave->slave_num); + } + + __raw_writel(mac_control, &slave->sliver->mac_control); + slave->mac_control = mac_control; + +out: + return ret; +} + +static int cpsw_update_link(struct cpsw_priv *priv) +{ + int ret = -ENODEV; + struct cpsw_slave *slave; + + for_active_slave(slave, priv) + ret = cpsw_slave_update_link(slave, priv, NULL); + + return ret; +} + +static inline u32 cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num) +{ + if (priv->host_port == 0) + return slave_num + 1; + else + return slave_num; +} + +static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv) +{ + u32 slave_port; + + setbit_and_wait_for_clear32(&slave->sliver->soft_reset); + + /* setup priority mapping */ + __raw_writel(0x76543210, &slave->sliver->rx_pri_map); + __raw_writel(0x33221100, &slave->regs->tx_pri_map); + + /* setup max packet size, and mac address */ + __raw_writel(PKT_MAX, &slave->sliver->rx_maxlen); + cpsw_set_slave_mac(slave, priv); + + slave->mac_control = 0; /* no link yet */ + + /* enable forwarding */ + slave_port = cpsw_get_slave_port(priv, slave->slave_num); + cpsw_ale_port_state(priv, slave_port, ALE_PORT_STATE_FORWARD); + + cpsw_ale_add_mcast(priv, net_bcast_ethaddr, 1 << slave_port); + + priv->phy_mask |= 1 << slave->data->phy_addr; +} + +static struct cpdma_desc *cpdma_desc_alloc(struct cpsw_priv *priv) +{ + struct cpdma_desc *desc = priv->desc_free; + + if (desc) + priv->desc_free = desc_read_ptr(desc, hw_next); + return desc; +} + +static void cpdma_desc_free(struct cpsw_priv *priv, struct cpdma_desc *desc) +{ + if (desc) { + desc_write(desc, hw_next, priv->desc_free); + priv->desc_free = desc; + } +} + +static int cpdma_submit(struct cpsw_priv *priv, struct cpdma_chan *chan, + void *buffer, int len) +{ + struct cpdma_desc *desc, *prev; + u32 mode; + + desc = cpdma_desc_alloc(priv); + if (!desc) + return -ENOMEM; + + if (len < PKT_MIN) + len = PKT_MIN; + + mode = CPDMA_DESC_OWNER | CPDMA_DESC_SOP | CPDMA_DESC_EOP; + + desc_write(desc, hw_next, 0); + desc_write(desc, hw_buffer, buffer); + desc_write(desc, hw_len, len); + desc_write(desc, hw_mode, mode | len); + desc_write(desc, sw_buffer, buffer); + desc_write(desc, sw_len, len); + + if (!chan->head) { + /* simple case - first packet enqueued */ + chan->head = desc; + chan->tail = desc; + chan_write(chan, hdp, desc); + goto done; + } + + /* not the first packet - enqueue at the tail */ + prev = chan->tail; + desc_write(prev, hw_next, desc); + chan->tail = desc; + + /* next check if EOQ has been triggered already */ + if (desc_read(prev, hw_mode) & CPDMA_DESC_EOQ) + chan_write(chan, hdp, desc); + +done: + if (chan->rxfree) + chan_write(chan, rxfree, 1); + return 0; +} + +static int cpdma_process(struct cpsw_priv *priv, struct cpdma_chan *chan, + void **buffer, int *len) +{ + struct cpdma_desc *desc = chan->head; + u32 status; + + if (!desc) + return -ENOENT; + + status = desc_read(desc, hw_mode); + + if (len) + *len = status & 0x7ff; + + if (buffer) + *buffer = desc_read_ptr(desc, sw_buffer); + + if (status & CPDMA_DESC_OWNER) { + if (chan_read(chan, hdp) == 0) { + if (desc_read(desc, hw_mode) & CPDMA_DESC_OWNER) + chan_write(chan, hdp, desc); + } + + return -EBUSY; + } + + chan->head = desc_read_ptr(desc, hw_next); + chan_write(chan, cp, desc); + + cpdma_desc_free(priv, desc); + return 0; +} + +static int _cpsw_init(struct cpsw_priv *priv, u8 *enetaddr) +{ + struct cpsw_slave *slave; + int i, ret; + + /* soft reset the controller and initialize priv */ + setbit_and_wait_for_clear32(&priv->regs->soft_reset); + + /* initialize and reset the address lookup engine */ + cpsw_ale_enable(priv, 1); + cpsw_ale_clear(priv, 1); + cpsw_ale_vlan_aware(priv, 0); /* vlan unaware mode */ + + /* setup host port priority mapping */ + __raw_writel(0x76543210, &priv->host_port_regs->cpdma_tx_pri_map); + __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map); + + /* disable priority elevation and enable statistics on all ports */ + __raw_writel(0, &priv->regs->ptype); + + /* enable statistics collection only on the host port */ + __raw_writel(BIT(priv->host_port), &priv->regs->stat_port_en); + __raw_writel(0x7, &priv->regs->stat_port_en); + + cpsw_ale_port_state(priv, priv->host_port, ALE_PORT_STATE_FORWARD); + + cpsw_ale_add_ucast(priv, enetaddr, priv->host_port, ALE_SECURE); + cpsw_ale_add_mcast(priv, net_bcast_ethaddr, 1 << priv->host_port); + + for_active_slave(slave, priv) + cpsw_slave_init(slave, priv); + + ret = cpsw_update_link(priv); + if (ret) + goto out; + + /* init descriptor pool */ + for (i = 0; i < NUM_DESCS; i++) { + desc_write(&priv->descs[i], hw_next, + (i == (NUM_DESCS - 1)) ? 0 : &priv->descs[i+1]); + } + priv->desc_free = &priv->descs[0]; + + /* initialize channels */ + if (priv->data.version == CPSW_CTRL_VERSION_2) { + memset(&priv->rx_chan, 0, sizeof(struct cpdma_chan)); + priv->rx_chan.hdp = priv->dma_regs + CPDMA_RXHDP_VER2; + priv->rx_chan.cp = priv->dma_regs + CPDMA_RXCP_VER2; + priv->rx_chan.rxfree = priv->dma_regs + CPDMA_RXFREE; + + memset(&priv->tx_chan, 0, sizeof(struct cpdma_chan)); + priv->tx_chan.hdp = priv->dma_regs + CPDMA_TXHDP_VER2; + priv->tx_chan.cp = priv->dma_regs + CPDMA_TXCP_VER2; + } else { + memset(&priv->rx_chan, 0, sizeof(struct cpdma_chan)); + priv->rx_chan.hdp = priv->dma_regs + CPDMA_RXHDP_VER1; + priv->rx_chan.cp = priv->dma_regs + CPDMA_RXCP_VER1; + priv->rx_chan.rxfree = priv->dma_regs + CPDMA_RXFREE; + + memset(&priv->tx_chan, 0, sizeof(struct cpdma_chan)); + priv->tx_chan.hdp = priv->dma_regs + CPDMA_TXHDP_VER1; + priv->tx_chan.cp = priv->dma_regs + CPDMA_TXCP_VER1; + } + + /* clear dma state */ + setbit_and_wait_for_clear32(priv->dma_regs + CPDMA_SOFTRESET); + + if (priv->data.version == CPSW_CTRL_VERSION_2) { + for (i = 0; i < priv->data.channels; i++) { + __raw_writel(0, priv->dma_regs + CPDMA_RXHDP_VER2 + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_RXFREE + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_RXCP_VER2 + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_TXHDP_VER2 + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_TXCP_VER2 + 4 + * i); + } + } else { + for (i = 0; i < priv->data.channels; i++) { + __raw_writel(0, priv->dma_regs + CPDMA_RXHDP_VER1 + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_RXFREE + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_RXCP_VER1 + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_TXHDP_VER1 + 4 + * i); + __raw_writel(0, priv->dma_regs + CPDMA_TXCP_VER1 + 4 + * i); + + } + } + + __raw_writel(1, priv->dma_regs + CPDMA_TXCONTROL); + __raw_writel(1, priv->dma_regs + CPDMA_RXCONTROL); + + /* submit rx descs */ + for (i = 0; i < PKTBUFSRX; i++) { + ret = cpdma_submit(priv, &priv->rx_chan, net_rx_packets[i], + PKTSIZE); + if (ret < 0) { + printf("error %d submitting rx desc\n", ret); + break; + } + } + +out: + return ret; +} + +static int cpsw_reap_completed_packets(struct cpsw_priv *priv) +{ + int timeout = CPDMA_TIMEOUT; + + /* reap completed packets */ + while (timeout-- && + (cpdma_process(priv, &priv->tx_chan, NULL, NULL) >= 0)) + ; + + return timeout; +} + +static void _cpsw_halt(struct cpsw_priv *priv) +{ + cpsw_reap_completed_packets(priv); + + writel(0, priv->dma_regs + CPDMA_TXCONTROL); + writel(0, priv->dma_regs + CPDMA_RXCONTROL); + + /* soft reset the controller and initialize priv */ + setbit_and_wait_for_clear32(&priv->regs->soft_reset); + + /* clear dma state */ + setbit_and_wait_for_clear32(priv->dma_regs + CPDMA_SOFTRESET); + +} + +static int _cpsw_send(struct cpsw_priv *priv, void *packet, int length) +{ + int timeout; + + flush_dcache_range((unsigned long)packet, + (unsigned long)packet + ALIGN(length, PKTALIGN)); + + timeout = cpsw_reap_completed_packets(priv); + if (timeout == -1) { + printf("cpdma_process timeout\n"); + return -ETIMEDOUT; + } + + return cpdma_submit(priv, &priv->tx_chan, packet, length); +} + +static int _cpsw_recv(struct cpsw_priv *priv, uchar **pkt) +{ + void *buffer; + int len; + int ret; + + ret = cpdma_process(priv, &priv->rx_chan, &buffer, &len); + if (ret < 0) + return ret; + + invalidate_dcache_range((unsigned long)buffer, + (unsigned long)buffer + PKTSIZE_ALIGN); + *pkt = buffer; + + return len; +} + +static void cpsw_slave_setup(struct cpsw_slave *slave, int slave_num, + struct cpsw_priv *priv) +{ + void *regs = priv->regs; + struct cpsw_slave_data *data = priv->data.slave_data + slave_num; + slave->slave_num = slave_num; + slave->data = data; + slave->regs = regs + data->slave_reg_ofs; + slave->sliver = regs + data->sliver_reg_ofs; +} + +static int cpsw_phy_init(struct cpsw_priv *priv, struct cpsw_slave *slave) +{ + struct phy_device *phydev; + u32 supported = PHY_GBIT_FEATURES; + + phydev = phy_connect(priv->bus, + slave->data->phy_addr, + priv->dev, + slave->data->phy_if); + + if (!phydev) + return -1; + + phydev->supported &= supported; + phydev->advertising = phydev->supported; + +#ifdef CONFIG_DM_ETH + if (slave->data->phy_of_handle) + phydev->node = offset_to_ofnode(slave->data->phy_of_handle); +#endif + + priv->phydev = phydev; + phy_config(phydev); + + return 1; +} + +static void cpsw_phy_addr_update(struct cpsw_priv *priv) +{ + struct cpsw_platform_data *data = &priv->data; + u16 alive = cpsw_mdio_get_alive(priv->bus); + int active = data->active_slave; + int new_addr = ffs(alive) - 1; + + /* + * If there is only one phy alive and its address does not match + * that of active slave, then phy address can safely be updated. + */ + if (hweight16(alive) == 1 && + data->slave_data[active].phy_addr != new_addr) { + printf("Updated phy address for CPSW#%d, old: %d, new: %d\n", + active, data->slave_data[active].phy_addr, new_addr); + data->slave_data[active].phy_addr = new_addr; + } +} + +int _cpsw_register(struct cpsw_priv *priv) +{ + struct cpsw_slave *slave; + struct cpsw_platform_data *data = &priv->data; + void *regs = (void *)data->cpsw_base; + + priv->slaves = malloc(sizeof(struct cpsw_slave) * data->slaves); + if (!priv->slaves) { + return -ENOMEM; + } + + priv->host_port = data->host_port_num; + priv->regs = regs; + priv->host_port_regs = regs + data->host_port_reg_ofs; + priv->dma_regs = regs + data->cpdma_reg_ofs; + priv->ale_regs = regs + data->ale_reg_ofs; + priv->descs = (void *)regs + data->bd_ram_ofs; + + int idx = 0; + + for_each_slave(slave, priv) { + cpsw_slave_setup(slave, idx, priv); + idx = idx + 1; + } + + priv->bus = cpsw_mdio_init(priv->dev->name, data->mdio_base, 0, 0); + if (!priv->bus) + return -EFAULT; + + cpsw_phy_addr_update(priv); + + for_active_slave(slave, priv) + cpsw_phy_init(priv, slave); + + return 0; +} + +#ifndef CONFIG_DM_ETH +static int cpsw_init(struct eth_device *dev, bd_t *bis) +{ + struct cpsw_priv *priv = dev->priv; + + return _cpsw_init(priv, dev->enetaddr); +} + +static void cpsw_halt(struct eth_device *dev) +{ + struct cpsw_priv *priv = dev->priv; + + return _cpsw_halt(priv); +} + +static int cpsw_send(struct eth_device *dev, void *packet, int length) +{ + struct cpsw_priv *priv = dev->priv; + + return _cpsw_send(priv, packet, length); +} + +static int cpsw_recv(struct eth_device *dev) +{ + struct cpsw_priv *priv = dev->priv; + uchar *pkt = NULL; + int len; + + len = _cpsw_recv(priv, &pkt); + + if (len > 0) { + net_process_received_packet(pkt, len); + cpdma_submit(priv, &priv->rx_chan, pkt, PKTSIZE); + } + + return len; +} + +int cpsw_register(struct cpsw_platform_data *data) +{ + struct cpsw_priv *priv; + struct eth_device *dev; + int ret; + + dev = calloc(sizeof(*dev), 1); + if (!dev) + return -ENOMEM; + + priv = calloc(sizeof(*priv), 1); + if (!priv) { + free(dev); + return -ENOMEM; + } + + priv->dev = dev; + priv->data = *data; + + strcpy(dev->name, "cpsw"); + dev->iobase = 0; + dev->init = cpsw_init; + dev->halt = cpsw_halt; + dev->send = cpsw_send; + dev->recv = cpsw_recv; + dev->priv = priv; + + eth_register(dev); + + ret = _cpsw_register(priv); + if (ret < 0) { + eth_unregister(dev); + free(dev); + free(priv); + return ret; + } + + return 1; +} +#else +static int cpsw_eth_start(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct cpsw_priv *priv = dev_get_priv(dev); + + return _cpsw_init(priv, pdata->enetaddr); +} + +static int cpsw_eth_send(struct udevice *dev, void *packet, int length) +{ + struct cpsw_priv *priv = dev_get_priv(dev); + + return _cpsw_send(priv, packet, length); +} + +static int cpsw_eth_recv(struct udevice *dev, int flags, uchar **packetp) +{ + struct cpsw_priv *priv = dev_get_priv(dev); + + return _cpsw_recv(priv, packetp); +} + +static int cpsw_eth_free_pkt(struct udevice *dev, uchar *packet, + int length) +{ + struct cpsw_priv *priv = dev_get_priv(dev); + + return cpdma_submit(priv, &priv->rx_chan, packet, PKTSIZE); +} + +static void cpsw_eth_stop(struct udevice *dev) +{ + struct cpsw_priv *priv = dev_get_priv(dev); + + return _cpsw_halt(priv); +} + + +static int cpsw_eth_probe(struct udevice *dev) +{ + struct cpsw_priv *priv = dev_get_priv(dev); + + priv->dev = dev; + + return _cpsw_register(priv); +} + +static const struct eth_ops cpsw_eth_ops = { + .start = cpsw_eth_start, + .send = cpsw_eth_send, + .recv = cpsw_eth_recv, + .free_pkt = cpsw_eth_free_pkt, + .stop = cpsw_eth_stop, +}; + +static inline fdt_addr_t cpsw_get_addr_by_node(const void *fdt, int node) +{ + return fdtdec_get_addr_size_auto_noparent(fdt, node, "reg", 0, NULL, + false); +} + +static void cpsw_gmii_sel_am3352(struct cpsw_priv *priv, + phy_interface_t phy_mode) +{ + u32 reg; + u32 mask; + u32 mode = 0; + bool rgmii_id = false; + int slave = priv->data.active_slave; + + reg = readl(priv->data.gmii_sel); + + switch (phy_mode) { + case PHY_INTERFACE_MODE_RMII: + mode = AM33XX_GMII_SEL_MODE_RMII; + break; + + case PHY_INTERFACE_MODE_RGMII: + mode = AM33XX_GMII_SEL_MODE_RGMII; + break; + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + mode = AM33XX_GMII_SEL_MODE_RGMII; + rgmii_id = true; + break; + + case PHY_INTERFACE_MODE_MII: + default: + mode = AM33XX_GMII_SEL_MODE_MII; + break; + }; + + mask = GMII_SEL_MODE_MASK << (slave * 2) | BIT(slave + 6); + mode <<= slave * 2; + + if (priv->data.rmii_clock_external) { + if (slave == 0) + mode |= AM33XX_GMII_SEL_RMII1_IO_CLK_EN; + else + mode |= AM33XX_GMII_SEL_RMII2_IO_CLK_EN; + } + + if (rgmii_id) { + if (slave == 0) + mode |= AM33XX_GMII_SEL_RGMII1_IDMODE; + else + mode |= AM33XX_GMII_SEL_RGMII2_IDMODE; + } + + reg &= ~mask; + reg |= mode; + + writel(reg, priv->data.gmii_sel); +} + +static void cpsw_gmii_sel_dra7xx(struct cpsw_priv *priv, + phy_interface_t phy_mode) +{ + u32 reg; + u32 mask; + u32 mode = 0; + int slave = priv->data.active_slave; + + reg = readl(priv->data.gmii_sel); + + switch (phy_mode) { + case PHY_INTERFACE_MODE_RMII: + mode = AM33XX_GMII_SEL_MODE_RMII; + break; + + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + mode = AM33XX_GMII_SEL_MODE_RGMII; + break; + + case PHY_INTERFACE_MODE_MII: + default: + mode = AM33XX_GMII_SEL_MODE_MII; + break; + }; + + switch (slave) { + case 0: + mask = GMII_SEL_MODE_MASK; + break; + case 1: + mask = GMII_SEL_MODE_MASK << 4; + mode <<= 4; + break; + default: + dev_err(priv->dev, "invalid slave number...\n"); + return; + } + + if (priv->data.rmii_clock_external) + dev_err(priv->dev, "RMII External clock is not supported\n"); + + reg &= ~mask; + reg |= mode; + + writel(reg, priv->data.gmii_sel); +} + +static void cpsw_phy_sel(struct cpsw_priv *priv, const char *compat, + phy_interface_t phy_mode) +{ + if (!strcmp(compat, "ti,am3352-cpsw-phy-sel")) + cpsw_gmii_sel_am3352(priv, phy_mode); + if (!strcmp(compat, "ti,am43xx-cpsw-phy-sel")) + cpsw_gmii_sel_am3352(priv, phy_mode); + else if (!strcmp(compat, "ti,dra7xx-cpsw-phy-sel")) + cpsw_gmii_sel_dra7xx(priv, phy_mode); +} + +static int cpsw_eth_ofdata_to_platdata(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct cpsw_priv *priv = dev_get_priv(dev); + struct gpio_desc *mode_gpios; + const char *phy_mode; + const char *phy_sel_compat = NULL; + const void *fdt = gd->fdt_blob; + int node = dev_of_offset(dev); + int subnode; + int slave_index = 0; + int active_slave; + int num_mode_gpios; + int ret; + + pdata->iobase = devfdt_get_addr(dev); + priv->data.version = CPSW_CTRL_VERSION_2; + priv->data.bd_ram_ofs = CPSW_BD_OFFSET; + priv->data.ale_reg_ofs = CPSW_ALE_OFFSET; + priv->data.cpdma_reg_ofs = CPSW_CPDMA_OFFSET; + priv->data.mdio_div = CPSW_MDIO_DIV; + priv->data.host_port_reg_ofs = CPSW_HOST_PORT_OFFSET, + + pdata->phy_interface = -1; + + priv->data.cpsw_base = pdata->iobase; + priv->data.channels = fdtdec_get_int(fdt, node, "cpdma_channels", -1); + if (priv->data.channels <= 0) { + printf("error: cpdma_channels not found in dt\n"); + return -ENOENT; + } + + priv->data.slaves = fdtdec_get_int(fdt, node, "slaves", -1); + if (priv->data.slaves <= 0) { + printf("error: slaves not found in dt\n"); + return -ENOENT; + } + priv->data.slave_data = malloc(sizeof(struct cpsw_slave_data) * + priv->data.slaves); + + priv->data.ale_entries = fdtdec_get_int(fdt, node, "ale_entries", -1); + if (priv->data.ale_entries <= 0) { + printf("error: ale_entries not found in dt\n"); + return -ENOENT; + } + + priv->data.bd_ram_ofs = fdtdec_get_int(fdt, node, "bd_ram_size", -1); + if (priv->data.bd_ram_ofs <= 0) { + printf("error: bd_ram_size not found in dt\n"); + return -ENOENT; + } + + priv->data.mac_control = fdtdec_get_int(fdt, node, "mac_control", -1); + if (priv->data.mac_control <= 0) { + printf("error: ale_entries not found in dt\n"); + return -ENOENT; + } + + num_mode_gpios = gpio_get_list_count(dev, "mode-gpios"); + if (num_mode_gpios > 0) { + mode_gpios = malloc(sizeof(struct gpio_desc) * + num_mode_gpios); + gpio_request_list_by_name(dev, "mode-gpios", mode_gpios, + num_mode_gpios, GPIOD_IS_OUT); + free(mode_gpios); + } + + active_slave = fdtdec_get_int(fdt, node, "active_slave", 0); + priv->data.active_slave = active_slave; + + fdt_for_each_subnode(subnode, fdt, node) { + int len; + const char *name; + + name = fdt_get_name(fdt, subnode, &len); + if (!strncmp(name, "mdio", 4)) { + u32 mdio_base; + + mdio_base = cpsw_get_addr_by_node(fdt, subnode); + if (mdio_base == FDT_ADDR_T_NONE) { + pr_err("Not able to get MDIO address space\n"); + return -ENOENT; + } + priv->data.mdio_base = mdio_base; + } + + if (!strncmp(name, "slave", 5)) { + u32 phy_id[2]; + + if (slave_index >= priv->data.slaves) + continue; + phy_mode = fdt_getprop(fdt, subnode, "phy-mode", NULL); + if (phy_mode) + priv->data.slave_data[slave_index].phy_if = + phy_get_interface_by_name(phy_mode); + + priv->data.slave_data[slave_index].phy_of_handle = + fdtdec_lookup_phandle(fdt, subnode, + "phy-handle"); + + if (priv->data.slave_data[slave_index].phy_of_handle >= 0) { + priv->data.slave_data[slave_index].phy_addr = + fdtdec_get_int(gd->fdt_blob, + priv->data.slave_data[slave_index].phy_of_handle, + "reg", -1); + } else { + fdtdec_get_int_array(fdt, subnode, "phy_id", + phy_id, 2); + priv->data.slave_data[slave_index].phy_addr = + phy_id[1]; + } + slave_index++; + } + + if (!strncmp(name, "cpsw-phy-sel", 12)) { + priv->data.gmii_sel = cpsw_get_addr_by_node(fdt, + subnode); + + if (priv->data.gmii_sel == FDT_ADDR_T_NONE) { + pr_err("Not able to get gmii_sel reg address\n"); + return -ENOENT; + } + + if (fdt_get_property(fdt, subnode, "rmii-clock-ext", + NULL)) + priv->data.rmii_clock_external = true; + + phy_sel_compat = fdt_getprop(fdt, subnode, "compatible", + NULL); + if (!phy_sel_compat) { + pr_err("Not able to get gmii_sel compatible\n"); + return -ENOENT; + } + } + } + + priv->data.slave_data[0].slave_reg_ofs = CPSW_SLAVE0_OFFSET; + priv->data.slave_data[0].sliver_reg_ofs = CPSW_SLIVER0_OFFSET; + + if (priv->data.slaves == 2) { + priv->data.slave_data[1].slave_reg_ofs = CPSW_SLAVE1_OFFSET; + priv->data.slave_data[1].sliver_reg_ofs = CPSW_SLIVER1_OFFSET; + } + + ret = ti_cm_get_macid(dev, active_slave, pdata->enetaddr); + if (ret < 0) { + pr_err("cpsw read efuse mac failed\n"); + return ret; + } + + pdata->phy_interface = priv->data.slave_data[active_slave].phy_if; + if (pdata->phy_interface == -1) { + debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode); + return -EINVAL; + } + + /* Select phy interface in control module */ + cpsw_phy_sel(priv, phy_sel_compat, pdata->phy_interface); + + return 0; +} + +int cpsw_get_slave_phy_addr(struct udevice *dev, int slave) +{ + struct cpsw_priv *priv = dev_get_priv(dev); + struct cpsw_platform_data *data = &priv->data; + + return data->slave_data[slave].phy_addr; +} + +static const struct udevice_id cpsw_eth_ids[] = { + { .compatible = "ti,cpsw" }, + { .compatible = "ti,am335x-cpsw" }, + { } +}; + +U_BOOT_DRIVER(eth_cpsw) = { + .name = "eth_cpsw", + .id = UCLASS_ETH, + .of_match = cpsw_eth_ids, + .ofdata_to_platdata = cpsw_eth_ofdata_to_platdata, + .probe = cpsw_eth_probe, + .ops = &cpsw_eth_ops, + .priv_auto_alloc_size = sizeof(struct cpsw_priv), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; +#endif /* CONFIG_DM_ETH */ diff --git a/drivers/net/ti/cpsw_mdio.c b/drivers/net/ti/cpsw_mdio.c new file mode 100644 index 0000000000..70f547e6d7 --- /dev/null +++ b/drivers/net/ti/cpsw_mdio.c @@ -0,0 +1,203 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * CPSW MDIO generic driver for TI AMxx/K2x/EMAC devices. + * + * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#include <common.h> +#include <asm/io.h> +#include <miiphy.h> +#include <wait_bit.h> + +struct cpsw_mdio_regs { + u32 version; + u32 control; +#define CONTROL_IDLE BIT(31) +#define CONTROL_ENABLE BIT(30) +#define CONTROL_FAULT BIT(19) +#define CONTROL_FAULT_ENABLE BIT(18) +#define CONTROL_DIV_MASK GENMASK(15, 0) + + u32 alive; + u32 link; + u32 linkintraw; + u32 linkintmasked; + u32 __reserved_0[2]; + u32 userintraw; + u32 userintmasked; + u32 userintmaskset; + u32 userintmaskclr; + u32 __reserved_1[20]; + + struct { + u32 access; + u32 physel; +#define USERACCESS_GO BIT(31) +#define USERACCESS_WRITE BIT(30) +#define USERACCESS_ACK BIT(29) +#define USERACCESS_READ (0) +#define USERACCESS_PHY_REG_SHIFT (21) +#define USERACCESS_PHY_ADDR_SHIFT (16) +#define USERACCESS_DATA GENMASK(15, 0) + } user[0]; +}; + +#define CPSW_MDIO_DIV_DEF 0xff +#define PHY_REG_MASK 0x1f +#define PHY_ID_MASK 0x1f + +/* + * This timeout definition is a worst-case ultra defensive measure against + * unexpected controller lock ups. Ideally, we should never ever hit this + * scenario in practice. + */ +#define CPSW_MDIO_TIMEOUT 100 /* msecs */ + +struct cpsw_mdio { + struct cpsw_mdio_regs *regs; + struct mii_dev *bus; + int div; +}; + +/* wait until hardware is ready for another user access */ +static int cpsw_mdio_wait_for_user_access(struct cpsw_mdio *mdio) +{ + return wait_for_bit_le32(&mdio->regs->user[0].access, + USERACCESS_GO, false, + CPSW_MDIO_TIMEOUT, false); +} + +static int cpsw_mdio_read(struct mii_dev *bus, int phy_id, + int dev_addr, int phy_reg) +{ + struct cpsw_mdio *mdio = bus->priv; + int data, ret; + u32 reg; + + if (phy_reg & ~PHY_REG_MASK || phy_id & ~PHY_ID_MASK) + return -EINVAL; + + ret = cpsw_mdio_wait_for_user_access(mdio); + if (ret) + return ret; + reg = (USERACCESS_GO | USERACCESS_READ | + (phy_reg << USERACCESS_PHY_REG_SHIFT) | + (phy_id << USERACCESS_PHY_ADDR_SHIFT)); + writel(reg, &mdio->regs->user[0].access); + ret = cpsw_mdio_wait_for_user_access(mdio); + if (ret) + return ret; + + reg = readl(&mdio->regs->user[0].access); + data = (reg & USERACCESS_ACK) ? (reg & USERACCESS_DATA) : -1; + return data; +} + +static int cpsw_mdio_write(struct mii_dev *bus, int phy_id, int dev_addr, + int phy_reg, u16 data) +{ + struct cpsw_mdio *mdio = bus->priv; + u32 reg; + int ret; + + if (phy_reg & ~PHY_REG_MASK || phy_id & ~PHY_ID_MASK) + return -EINVAL; + + ret = cpsw_mdio_wait_for_user_access(mdio); + if (ret) + return ret; + reg = (USERACCESS_GO | USERACCESS_WRITE | + (phy_reg << USERACCESS_PHY_REG_SHIFT) | + (phy_id << USERACCESS_PHY_ADDR_SHIFT) | + (data & USERACCESS_DATA)); + writel(reg, &mdio->regs->user[0].access); + + return cpsw_mdio_wait_for_user_access(mdio); +} + +u32 cpsw_mdio_get_alive(struct mii_dev *bus) +{ + struct cpsw_mdio *mdio = bus->priv; + u32 val; + + val = readl(&mdio->regs->control); + return val & GENMASK(15, 0); +} + +struct mii_dev *cpsw_mdio_init(const char *name, u32 mdio_base, + u32 bus_freq, int fck_freq) +{ + struct cpsw_mdio *cpsw_mdio; + int ret; + + cpsw_mdio = calloc(1, sizeof(*cpsw_mdio)); + if (!cpsw_mdio) { + debug("failed to alloc cpsw_mdio\n"); + return NULL; + } + + cpsw_mdio->bus = mdio_alloc(); + if (!cpsw_mdio->bus) { + debug("failed to alloc mii bus\n"); + free(cpsw_mdio); + return NULL; + } + + cpsw_mdio->regs = (struct cpsw_mdio_regs *)mdio_base; + + if (!bus_freq || !fck_freq) + cpsw_mdio->div = CPSW_MDIO_DIV_DEF; + else + cpsw_mdio->div = (fck_freq / bus_freq) - 1; + cpsw_mdio->div &= CONTROL_DIV_MASK; + + /* set enable and clock divider */ + writel(cpsw_mdio->div | CONTROL_ENABLE | CONTROL_FAULT | + CONTROL_FAULT_ENABLE, &cpsw_mdio->regs->control); + wait_for_bit_le32(&cpsw_mdio->regs->control, + CONTROL_IDLE, false, CPSW_MDIO_TIMEOUT, true); + + /* + * wait for scan logic to settle: + * the scan time consists of (a) a large fixed component, and (b) a + * small component that varies with the mii bus frequency. These + * were estimated using measurements at 1.1 and 2.2 MHz on tnetv107x + * silicon. Since the effect of (b) was found to be largely + * negligible, we keep things simple here. + */ + mdelay(1); + + cpsw_mdio->bus->read = cpsw_mdio_read; + cpsw_mdio->bus->write = cpsw_mdio_write; + cpsw_mdio->bus->priv = cpsw_mdio; + snprintf(cpsw_mdio->bus->name, sizeof(cpsw_mdio->bus->name), name); + + ret = mdio_register(cpsw_mdio->bus); + if (ret < 0) { + debug("failed to register mii bus\n"); + goto free_bus; + } + + return cpsw_mdio->bus; + +free_bus: + mdio_free(cpsw_mdio->bus); + free(cpsw_mdio); + return NULL; +} + +void cpsw_mdio_free(struct mii_dev *bus) +{ + struct cpsw_mdio *mdio = bus->priv; + u32 reg; + + /* disable mdio */ + reg = readl(&mdio->regs->control); + reg &= ~CONTROL_ENABLE; + writel(reg, &mdio->regs->control); + + mdio_unregister(bus); + mdio_free(bus); + free(mdio); +} diff --git a/drivers/net/ti/cpsw_mdio.h b/drivers/net/ti/cpsw_mdio.h new file mode 100644 index 0000000000..4a76d4e5c5 --- /dev/null +++ b/drivers/net/ti/cpsw_mdio.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * CPSW MDIO generic driver API for TI AMxx/K2x/EMAC devices. + * + * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#ifndef CPSW_MDIO_H_ +#define CPSW_MDIO_H_ + +struct cpsw_mdio; + +struct mii_dev *cpsw_mdio_init(const char *name, u32 mdio_base, + u32 bus_freq, int fck_freq); +void cpsw_mdio_free(struct mii_dev *bus); +u32 cpsw_mdio_get_alive(struct mii_dev *bus); + +#endif /* CPSW_MDIO_H_ */ diff --git a/drivers/net/ti/davinci_emac.c b/drivers/net/ti/davinci_emac.c new file mode 100644 index 0000000000..bb879d8d4f --- /dev/null +++ b/drivers/net/ti/davinci_emac.c @@ -0,0 +1,901 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Ethernet driver for TI TMS320DM644x (DaVinci) chips. + * + * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> + * + * Parts shamelessly stolen from TI's dm644x_emac.c. Original copyright + * follows: + * + * ---------------------------------------------------------------------------- + * + * dm644x_emac.c + * + * TI DaVinci (DM644X) EMAC peripheral driver source for DV-EVM + * + * Copyright (C) 2005 Texas Instruments. + * + * ---------------------------------------------------------------------------- + * + * Modifications: + * ver. 1.0: Sep 2005, Anant Gole - Created EMAC version for uBoot. + * ver 1.1: Nov 2005, Anant Gole - Extended the RX logic for multiple descriptors + */ +#include <common.h> +#include <command.h> +#include <net.h> +#include <miiphy.h> +#include <malloc.h> +#include <netdev.h> +#include <linux/compiler.h> +#include <asm/arch/emac_defs.h> +#include <asm/io.h> +#include "davinci_emac.h" + +unsigned int emac_dbg = 0; +#define debug_emac(fmt,args...) if (emac_dbg) printf(fmt,##args) + +#ifdef EMAC_HW_RAM_ADDR +static inline unsigned long BD_TO_HW(unsigned long x) +{ + if (x == 0) + return 0; + + return x - EMAC_WRAPPER_RAM_ADDR + EMAC_HW_RAM_ADDR; +} + +static inline unsigned long HW_TO_BD(unsigned long x) +{ + if (x == 0) + return 0; + + return x - EMAC_HW_RAM_ADDR + EMAC_WRAPPER_RAM_ADDR; +} +#else +#define BD_TO_HW(x) (x) +#define HW_TO_BD(x) (x) +#endif + +#ifdef DAVINCI_EMAC_GIG_ENABLE +#define emac_gigabit_enable(phy_addr) davinci_eth_gigabit_enable(phy_addr) +#else +#define emac_gigabit_enable(phy_addr) /* no gigabit to enable */ +#endif + +#if !defined(CONFIG_SYS_EMAC_TI_CLKDIV) +#define CONFIG_SYS_EMAC_TI_CLKDIV ((EMAC_MDIO_BUS_FREQ / \ + EMAC_MDIO_CLOCK_FREQ) - 1) +#endif + +static void davinci_eth_mdio_enable(void); + +static int gen_init_phy(int phy_addr); +static int gen_is_phy_connected(int phy_addr); +static int gen_get_link_speed(int phy_addr); +static int gen_auto_negotiate(int phy_addr); + +void eth_mdio_enable(void) +{ + davinci_eth_mdio_enable(); +} + +/* EMAC Addresses */ +static volatile emac_regs *adap_emac = (emac_regs *)EMAC_BASE_ADDR; +static volatile ewrap_regs *adap_ewrap = (ewrap_regs *)EMAC_WRAPPER_BASE_ADDR; +static volatile mdio_regs *adap_mdio = (mdio_regs *)EMAC_MDIO_BASE_ADDR; + +/* EMAC descriptors */ +static volatile emac_desc *emac_rx_desc = (emac_desc *)(EMAC_WRAPPER_RAM_ADDR + EMAC_RX_DESC_BASE); +static volatile emac_desc *emac_tx_desc = (emac_desc *)(EMAC_WRAPPER_RAM_ADDR + EMAC_TX_DESC_BASE); +static volatile emac_desc *emac_rx_active_head = 0; +static volatile emac_desc *emac_rx_active_tail = 0; +static int emac_rx_queue_active = 0; + +/* Receive packet buffers */ +static unsigned char emac_rx_buffers[EMAC_MAX_RX_BUFFERS * EMAC_RXBUF_SIZE] + __aligned(ARCH_DMA_MINALIGN); + +#ifndef CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT +#define CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 3 +#endif + +/* PHY address for a discovered PHY (0xff - not found) */ +static u_int8_t active_phy_addr[CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT]; + +/* number of PHY found active */ +static u_int8_t num_phy; + +phy_t phy[CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT]; + +static int davinci_eth_set_mac_addr(struct eth_device *dev) +{ + unsigned long mac_hi; + unsigned long mac_lo; + + /* + * Set MAC Addresses & Init multicast Hash to 0 (disable any multicast + * receive) + * Using channel 0 only - other channels are disabled + * */ + writel(0, &adap_emac->MACINDEX); + mac_hi = (dev->enetaddr[3] << 24) | + (dev->enetaddr[2] << 16) | + (dev->enetaddr[1] << 8) | + (dev->enetaddr[0]); + mac_lo = (dev->enetaddr[5] << 8) | + (dev->enetaddr[4]); + + writel(mac_hi, &adap_emac->MACADDRHI); +#if defined(DAVINCI_EMAC_VERSION2) + writel(mac_lo | EMAC_MAC_ADDR_IS_VALID | EMAC_MAC_ADDR_MATCH, + &adap_emac->MACADDRLO); +#else + writel(mac_lo, &adap_emac->MACADDRLO); +#endif + + writel(0, &adap_emac->MACHASH1); + writel(0, &adap_emac->MACHASH2); + + /* Set source MAC address - REQUIRED */ + writel(mac_hi, &adap_emac->MACSRCADDRHI); + writel(mac_lo, &adap_emac->MACSRCADDRLO); + + + return 0; +} + +static void davinci_eth_mdio_enable(void) +{ + u_int32_t clkdiv; + + clkdiv = CONFIG_SYS_EMAC_TI_CLKDIV; + + writel((clkdiv & 0xff) | + MDIO_CONTROL_ENABLE | + MDIO_CONTROL_FAULT | + MDIO_CONTROL_FAULT_ENABLE, + &adap_mdio->CONTROL); + + while (readl(&adap_mdio->CONTROL) & MDIO_CONTROL_IDLE) + ; +} + +/* + * Tries to find an active connected PHY. Returns 1 if address if found. + * If no active PHY (or more than one PHY) found returns 0. + * Sets active_phy_addr variable. + */ +static int davinci_eth_phy_detect(void) +{ + u_int32_t phy_act_state; + int i; + int j; + unsigned int count = 0; + + for (i = 0; i < CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT; i++) + active_phy_addr[i] = 0xff; + + udelay(1000); + phy_act_state = readl(&adap_mdio->ALIVE); + + if (phy_act_state == 0) + return 0; /* No active PHYs */ + + debug_emac("davinci_eth_phy_detect(), ALIVE = 0x%08x\n", phy_act_state); + + for (i = 0, j = 0; i < 32; i++) + if (phy_act_state & (1 << i)) { + count++; + if (count <= CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT) { + active_phy_addr[j++] = i; + } else { + printf("%s: to many PHYs detected.\n", + __func__); + count = 0; + break; + } + } + + num_phy = count; + + return count; +} + + +/* Read a PHY register via MDIO inteface. Returns 1 on success, 0 otherwise */ +int davinci_eth_phy_read(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t *data) +{ + int tmp; + + while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO) + ; + + writel(MDIO_USERACCESS0_GO | + MDIO_USERACCESS0_WRITE_READ | + ((reg_num & 0x1f) << 21) | + ((phy_addr & 0x1f) << 16), + &adap_mdio->USERACCESS0); + + /* Wait for command to complete */ + while ((tmp = readl(&adap_mdio->USERACCESS0)) & MDIO_USERACCESS0_GO) + ; + + if (tmp & MDIO_USERACCESS0_ACK) { + *data = tmp & 0xffff; + return 1; + } + + return 0; +} + +/* Write to a PHY register via MDIO inteface. Blocks until operation is complete. */ +int davinci_eth_phy_write(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t data) +{ + + while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO) + ; + + writel(MDIO_USERACCESS0_GO | + MDIO_USERACCESS0_WRITE_WRITE | + ((reg_num & 0x1f) << 21) | + ((phy_addr & 0x1f) << 16) | + (data & 0xffff), + &adap_mdio->USERACCESS0); + + /* Wait for command to complete */ + while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO) + ; + + return 1; +} + +/* PHY functions for a generic PHY */ +static int gen_init_phy(int phy_addr) +{ + int ret = 1; + + if (gen_get_link_speed(phy_addr)) { + /* Try another time */ + ret = gen_get_link_speed(phy_addr); + } + + return(ret); +} + +static int gen_is_phy_connected(int phy_addr) +{ + u_int16_t dummy; + + return davinci_eth_phy_read(phy_addr, MII_PHYSID1, &dummy); +} + +static int get_active_phy(void) +{ + int i; + + for (i = 0; i < num_phy; i++) + if (phy[i].get_link_speed(active_phy_addr[i])) + return i; + + return -1; /* Return error if no link */ +} + +static int gen_get_link_speed(int phy_addr) +{ + u_int16_t tmp; + + if (davinci_eth_phy_read(phy_addr, MII_STATUS_REG, &tmp) && + (tmp & 0x04)) { +#if defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \ + defined(CONFIG_MACH_DAVINCI_DA850_EVM) + davinci_eth_phy_read(phy_addr, MII_LPA, &tmp); + + /* Speed doesn't matter, there is no setting for it in EMAC. */ + if (tmp & (LPA_100FULL | LPA_10FULL)) { + /* set EMAC for Full Duplex */ + writel(EMAC_MACCONTROL_MIIEN_ENABLE | + EMAC_MACCONTROL_FULLDUPLEX_ENABLE, + &adap_emac->MACCONTROL); + } else { + /*set EMAC for Half Duplex */ + writel(EMAC_MACCONTROL_MIIEN_ENABLE, + &adap_emac->MACCONTROL); + } + + if (tmp & (LPA_100FULL | LPA_100HALF)) + writel(readl(&adap_emac->MACCONTROL) | + EMAC_MACCONTROL_RMIISPEED_100, + &adap_emac->MACCONTROL); + else + writel(readl(&adap_emac->MACCONTROL) & + ~EMAC_MACCONTROL_RMIISPEED_100, + &adap_emac->MACCONTROL); +#endif + return(1); + } + + return(0); +} + +static int gen_auto_negotiate(int phy_addr) +{ + u_int16_t tmp; + u_int16_t val; + unsigned long cntr = 0; + + if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp)) + return 0; + + val = tmp | BMCR_FULLDPLX | BMCR_ANENABLE | + BMCR_SPEED100; + davinci_eth_phy_write(phy_addr, MII_BMCR, val); + + if (!davinci_eth_phy_read(phy_addr, MII_ADVERTISE, &val)) + return 0; + + val |= (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | + ADVERTISE_10HALF); + davinci_eth_phy_write(phy_addr, MII_ADVERTISE, val); + + if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp)) + return(0); + +#ifdef DAVINCI_EMAC_GIG_ENABLE + davinci_eth_phy_read(phy_addr, MII_CTRL1000, &val); + val |= PHY_1000BTCR_1000FD; + val &= ~PHY_1000BTCR_1000HD; + davinci_eth_phy_write(phy_addr, MII_CTRL1000, val); + davinci_eth_phy_read(phy_addr, MII_CTRL1000, &val); +#endif + + /* Restart Auto_negotiation */ + tmp |= BMCR_ANRESTART; + davinci_eth_phy_write(phy_addr, MII_BMCR, tmp); + + /*check AutoNegotiate complete */ + do { + udelay(40000); + if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp)) + return 0; + + if (tmp & BMSR_ANEGCOMPLETE) + break; + + cntr++; + } while (cntr < 200); + + if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp)) + return(0); + + if (!(tmp & BMSR_ANEGCOMPLETE)) + return(0); + + return(gen_get_link_speed(phy_addr)); +} +/* End of generic PHY functions */ + + +#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) +static int davinci_mii_phy_read(struct mii_dev *bus, int addr, int devad, + int reg) +{ + unsigned short value = 0; + int retval = davinci_eth_phy_read(addr, reg, &value); + + return retval ? value : -EIO; +} + +static int davinci_mii_phy_write(struct mii_dev *bus, int addr, int devad, + int reg, u16 value) +{ + return davinci_eth_phy_write(addr, reg, value) ? 0 : 1; +} +#endif + +static void __attribute__((unused)) davinci_eth_gigabit_enable(int phy_addr) +{ + u_int16_t data; + + if (davinci_eth_phy_read(phy_addr, 0, &data)) { + if (data & (1 << 6)) { /* speed selection MSB */ + /* + * Check if link detected is giga-bit + * If Gigabit mode detected, enable gigbit in MAC + */ + writel(readl(&adap_emac->MACCONTROL) | + EMAC_MACCONTROL_GIGFORCE | + EMAC_MACCONTROL_GIGABIT_ENABLE, + &adap_emac->MACCONTROL); + } + } +} + +/* Eth device open */ +static int davinci_eth_open(struct eth_device *dev, bd_t *bis) +{ + dv_reg_p addr; + u_int32_t clkdiv, cnt, mac_control; + uint16_t __maybe_unused lpa_val; + volatile emac_desc *rx_desc; + int index; + + debug_emac("+ emac_open\n"); + + /* Reset EMAC module and disable interrupts in wrapper */ + writel(1, &adap_emac->SOFTRESET); + while (readl(&adap_emac->SOFTRESET) != 0) + ; +#if defined(DAVINCI_EMAC_VERSION2) + writel(1, &adap_ewrap->softrst); + while (readl(&adap_ewrap->softrst) != 0) + ; +#else + writel(0, &adap_ewrap->EWCTL); + for (cnt = 0; cnt < 5; cnt++) { + clkdiv = readl(&adap_ewrap->EWCTL); + } +#endif + +#if defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \ + defined(CONFIG_MACH_DAVINCI_DA850_EVM) + adap_ewrap->c0rxen = adap_ewrap->c1rxen = adap_ewrap->c2rxen = 0; + adap_ewrap->c0txen = adap_ewrap->c1txen = adap_ewrap->c2txen = 0; + adap_ewrap->c0miscen = adap_ewrap->c1miscen = adap_ewrap->c2miscen = 0; +#endif + rx_desc = emac_rx_desc; + + writel(1, &adap_emac->TXCONTROL); + writel(1, &adap_emac->RXCONTROL); + + davinci_eth_set_mac_addr(dev); + + /* Set DMA 8 TX / 8 RX Head pointers to 0 */ + addr = &adap_emac->TX0HDP; + for (cnt = 0; cnt < 8; cnt++) + writel(0, addr++); + + addr = &adap_emac->RX0HDP; + for (cnt = 0; cnt < 8; cnt++) + writel(0, addr++); + + /* Clear Statistics (do this before setting MacControl register) */ + addr = &adap_emac->RXGOODFRAMES; + for(cnt = 0; cnt < EMAC_NUM_STATS; cnt++) + writel(0, addr++); + + /* No multicast addressing */ + writel(0, &adap_emac->MACHASH1); + writel(0, &adap_emac->MACHASH2); + + /* Create RX queue and set receive process in place */ + emac_rx_active_head = emac_rx_desc; + for (cnt = 0; cnt < EMAC_MAX_RX_BUFFERS; cnt++) { + rx_desc->next = BD_TO_HW((u_int32_t)(rx_desc + 1)); + rx_desc->buffer = &emac_rx_buffers[cnt * EMAC_RXBUF_SIZE]; + rx_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE; + rx_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT; + rx_desc++; + } + + /* Finalize the rx desc list */ + rx_desc--; + rx_desc->next = 0; + emac_rx_active_tail = rx_desc; + emac_rx_queue_active = 1; + + /* Enable TX/RX */ + writel(EMAC_MAX_ETHERNET_PKT_SIZE, &adap_emac->RXMAXLEN); + writel(0, &adap_emac->RXBUFFEROFFSET); + + /* + * No fancy configs - Use this for promiscous debug + * - EMAC_RXMBPENABLE_RXCAFEN_ENABLE + */ + writel(EMAC_RXMBPENABLE_RXBROADEN, &adap_emac->RXMBPENABLE); + + /* Enable ch 0 only */ + writel(1, &adap_emac->RXUNICASTSET); + + /* Init MDIO & get link state */ + clkdiv = CONFIG_SYS_EMAC_TI_CLKDIV; + writel((clkdiv & 0xff) | MDIO_CONTROL_ENABLE | MDIO_CONTROL_FAULT, + &adap_mdio->CONTROL); + + /* We need to wait for MDIO to start */ + udelay(1000); + + index = get_active_phy(); + if (index == -1) + return(0); + + /* Enable MII interface */ + mac_control = EMAC_MACCONTROL_MIIEN_ENABLE; +#ifdef DAVINCI_EMAC_GIG_ENABLE + davinci_eth_phy_read(active_phy_addr[index], MII_STAT1000, &lpa_val); + if (lpa_val & PHY_1000BTSR_1000FD) { + debug_emac("eth_open : gigabit negotiated\n"); + mac_control |= EMAC_MACCONTROL_FULLDUPLEX_ENABLE; + mac_control |= EMAC_MACCONTROL_GIGABIT_ENABLE; + } +#endif + + davinci_eth_phy_read(active_phy_addr[index], MII_LPA, &lpa_val); + if (lpa_val & (LPA_100FULL | LPA_10FULL)) + /* set EMAC for Full Duplex */ + mac_control |= EMAC_MACCONTROL_FULLDUPLEX_ENABLE; +#if defined(CONFIG_SOC_DA8XX) || \ + (defined(CONFIG_OMAP34XX) && defined(CONFIG_DRIVER_TI_EMAC_USE_RMII)) + mac_control |= EMAC_MACCONTROL_RMIISPEED_100; +#endif + writel(mac_control, &adap_emac->MACCONTROL); + /* Start receive process */ + writel(BD_TO_HW((u_int32_t)emac_rx_desc), &adap_emac->RX0HDP); + + debug_emac("- emac_open\n"); + + return(1); +} + +/* EMAC Channel Teardown */ +static void davinci_eth_ch_teardown(int ch) +{ + dv_reg dly = 0xff; + dv_reg cnt; + + debug_emac("+ emac_ch_teardown\n"); + + if (ch == EMAC_CH_TX) { + /* Init TX channel teardown */ + writel(0, &adap_emac->TXTEARDOWN); + do { + /* + * Wait here for Tx teardown completion interrupt to + * occur. Note: A task delay can be called here to pend + * rather than occupying CPU cycles - anyway it has + * been found that teardown takes very few cpu cycles + * and does not affect functionality + */ + dly--; + udelay(1); + if (dly == 0) + break; + cnt = readl(&adap_emac->TX0CP); + } while (cnt != 0xfffffffc); + writel(cnt, &adap_emac->TX0CP); + writel(0, &adap_emac->TX0HDP); + } else { + /* Init RX channel teardown */ + writel(0, &adap_emac->RXTEARDOWN); + do { + /* + * Wait here for Rx teardown completion interrupt to + * occur. Note: A task delay can be called here to pend + * rather than occupying CPU cycles - anyway it has + * been found that teardown takes very few cpu cycles + * and does not affect functionality + */ + dly--; + udelay(1); + if (dly == 0) + break; + cnt = readl(&adap_emac->RX0CP); + } while (cnt != 0xfffffffc); + writel(cnt, &adap_emac->RX0CP); + writel(0, &adap_emac->RX0HDP); + } + + debug_emac("- emac_ch_teardown\n"); +} + +/* Eth device close */ +static void davinci_eth_close(struct eth_device *dev) +{ + debug_emac("+ emac_close\n"); + + davinci_eth_ch_teardown(EMAC_CH_TX); /* TX Channel teardown */ + if (readl(&adap_emac->RXCONTROL) & 1) + davinci_eth_ch_teardown(EMAC_CH_RX); /* RX Channel teardown */ + + /* Reset EMAC module and disable interrupts in wrapper */ + writel(1, &adap_emac->SOFTRESET); +#if defined(DAVINCI_EMAC_VERSION2) + writel(1, &adap_ewrap->softrst); +#else + writel(0, &adap_ewrap->EWCTL); +#endif + +#if defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \ + defined(CONFIG_MACH_DAVINCI_DA850_EVM) + adap_ewrap->c0rxen = adap_ewrap->c1rxen = adap_ewrap->c2rxen = 0; + adap_ewrap->c0txen = adap_ewrap->c1txen = adap_ewrap->c2txen = 0; + adap_ewrap->c0miscen = adap_ewrap->c1miscen = adap_ewrap->c2miscen = 0; +#endif + debug_emac("- emac_close\n"); +} + +static int tx_send_loop = 0; + +/* + * This function sends a single packet on the network and returns + * positive number (number of bytes transmitted) or negative for error + */ +static int davinci_eth_send_packet (struct eth_device *dev, + void *packet, int length) +{ + int ret_status = -1; + int index; + tx_send_loop = 0; + + index = get_active_phy(); + if (index == -1) { + printf(" WARN: emac_send_packet: No link\n"); + return (ret_status); + } + + /* Check packet size and if < EMAC_MIN_ETHERNET_PKT_SIZE, pad it up */ + if (length < EMAC_MIN_ETHERNET_PKT_SIZE) { + length = EMAC_MIN_ETHERNET_PKT_SIZE; + } + + /* Populate the TX descriptor */ + emac_tx_desc->next = 0; + emac_tx_desc->buffer = (u_int8_t *) packet; + emac_tx_desc->buff_off_len = (length & 0xffff); + emac_tx_desc->pkt_flag_len = ((length & 0xffff) | + EMAC_CPPI_SOP_BIT | + EMAC_CPPI_OWNERSHIP_BIT | + EMAC_CPPI_EOP_BIT); + + flush_dcache_range((unsigned long)packet, + (unsigned long)packet + ALIGN(length, PKTALIGN)); + + /* Send the packet */ + writel(BD_TO_HW((unsigned long)emac_tx_desc), &adap_emac->TX0HDP); + + /* Wait for packet to complete or link down */ + while (1) { + if (!phy[index].get_link_speed(active_phy_addr[index])) { + davinci_eth_ch_teardown (EMAC_CH_TX); + return (ret_status); + } + + if (readl(&adap_emac->TXINTSTATRAW) & 0x01) { + ret_status = length; + break; + } + tx_send_loop++; + } + + return (ret_status); +} + +/* + * This function handles receipt of a packet from the network + */ +static int davinci_eth_rcv_packet (struct eth_device *dev) +{ + volatile emac_desc *rx_curr_desc; + volatile emac_desc *curr_desc; + volatile emac_desc *tail_desc; + int status, ret = -1; + + rx_curr_desc = emac_rx_active_head; + if (!rx_curr_desc) + return 0; + status = rx_curr_desc->pkt_flag_len; + if ((status & EMAC_CPPI_OWNERSHIP_BIT) == 0) { + if (status & EMAC_CPPI_RX_ERROR_FRAME) { + /* Error in packet - discard it and requeue desc */ + printf ("WARN: emac_rcv_pkt: Error in packet\n"); + } else { + unsigned long tmp = (unsigned long)rx_curr_desc->buffer; + unsigned short len = + rx_curr_desc->buff_off_len & 0xffff; + + invalidate_dcache_range(tmp, tmp + ALIGN(len, PKTALIGN)); + net_process_received_packet(rx_curr_desc->buffer, len); + ret = len; + } + + /* Ack received packet descriptor */ + writel(BD_TO_HW((ulong)rx_curr_desc), &adap_emac->RX0CP); + curr_desc = rx_curr_desc; + emac_rx_active_head = + (volatile emac_desc *) (HW_TO_BD(rx_curr_desc->next)); + + if (status & EMAC_CPPI_EOQ_BIT) { + if (emac_rx_active_head) { + writel(BD_TO_HW((ulong)emac_rx_active_head), + &adap_emac->RX0HDP); + } else { + emac_rx_queue_active = 0; + printf ("INFO:emac_rcv_packet: RX Queue not active\n"); + } + } + + /* Recycle RX descriptor */ + rx_curr_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE; + rx_curr_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT; + rx_curr_desc->next = 0; + + if (emac_rx_active_head == 0) { + printf ("INFO: emac_rcv_pkt: active queue head = 0\n"); + emac_rx_active_head = curr_desc; + emac_rx_active_tail = curr_desc; + if (emac_rx_queue_active != 0) { + writel(BD_TO_HW((ulong)emac_rx_active_head), + &adap_emac->RX0HDP); + printf ("INFO: emac_rcv_pkt: active queue head = 0, HDP fired\n"); + emac_rx_queue_active = 1; + } + } else { + tail_desc = emac_rx_active_tail; + emac_rx_active_tail = curr_desc; + tail_desc->next = BD_TO_HW((ulong) curr_desc); + status = tail_desc->pkt_flag_len; + if (status & EMAC_CPPI_EOQ_BIT) { + writel(BD_TO_HW((ulong)curr_desc), + &adap_emac->RX0HDP); + status &= ~EMAC_CPPI_EOQ_BIT; + tail_desc->pkt_flag_len = status; + } + } + return (ret); + } + return (0); +} + +/* + * This function initializes the emac hardware. It does NOT initialize + * EMAC modules power or pin multiplexors, that is done by board_init() + * much earlier in bootup process. Returns 1 on success, 0 otherwise. + */ +int davinci_emac_initialize(void) +{ + u_int32_t phy_id; + u_int16_t tmp; + int i; + int ret; + struct eth_device *dev; + + dev = malloc(sizeof *dev); + + if (dev == NULL) + return -1; + + memset(dev, 0, sizeof *dev); + strcpy(dev->name, "DaVinci-EMAC"); + + dev->iobase = 0; + dev->init = davinci_eth_open; + dev->halt = davinci_eth_close; + dev->send = davinci_eth_send_packet; + dev->recv = davinci_eth_rcv_packet; + dev->write_hwaddr = davinci_eth_set_mac_addr; + + eth_register(dev); + + davinci_eth_mdio_enable(); + + /* let the EMAC detect the PHYs */ + udelay(5000); + + for (i = 0; i < 256; i++) { + if (readl(&adap_mdio->ALIVE)) + break; + udelay(1000); + } + + if (i >= 256) { + printf("No ETH PHY detected!!!\n"); + return(0); + } + + /* Find if PHY(s) is/are connected */ + ret = davinci_eth_phy_detect(); + if (!ret) + return(0); + else + debug_emac(" %d ETH PHY detected\n", ret); + + /* Get PHY ID and initialize phy_ops for a detected PHY */ + for (i = 0; i < num_phy; i++) { + if (!davinci_eth_phy_read(active_phy_addr[i], MII_PHYSID1, + &tmp)) { + active_phy_addr[i] = 0xff; + continue; + } + + phy_id = (tmp << 16) & 0xffff0000; + + if (!davinci_eth_phy_read(active_phy_addr[i], MII_PHYSID2, + &tmp)) { + active_phy_addr[i] = 0xff; + continue; + } + + phy_id |= tmp & 0x0000ffff; + + switch (phy_id) { +#ifdef PHY_KSZ8873 + case PHY_KSZ8873: + sprintf(phy[i].name, "KSZ8873 @ 0x%02x", + active_phy_addr[i]); + phy[i].init = ksz8873_init_phy; + phy[i].is_phy_connected = ksz8873_is_phy_connected; + phy[i].get_link_speed = ksz8873_get_link_speed; + phy[i].auto_negotiate = ksz8873_auto_negotiate; + break; +#endif +#ifdef PHY_LXT972 + case PHY_LXT972: + sprintf(phy[i].name, "LXT972 @ 0x%02x", + active_phy_addr[i]); + phy[i].init = lxt972_init_phy; + phy[i].is_phy_connected = lxt972_is_phy_connected; + phy[i].get_link_speed = lxt972_get_link_speed; + phy[i].auto_negotiate = lxt972_auto_negotiate; + break; +#endif +#ifdef PHY_DP83848 + case PHY_DP83848: + sprintf(phy[i].name, "DP83848 @ 0x%02x", + active_phy_addr[i]); + phy[i].init = dp83848_init_phy; + phy[i].is_phy_connected = dp83848_is_phy_connected; + phy[i].get_link_speed = dp83848_get_link_speed; + phy[i].auto_negotiate = dp83848_auto_negotiate; + break; +#endif +#ifdef PHY_ET1011C + case PHY_ET1011C: + sprintf(phy[i].name, "ET1011C @ 0x%02x", + active_phy_addr[i]); + phy[i].init = gen_init_phy; + phy[i].is_phy_connected = gen_is_phy_connected; + phy[i].get_link_speed = et1011c_get_link_speed; + phy[i].auto_negotiate = gen_auto_negotiate; + break; +#endif + default: + sprintf(phy[i].name, "GENERIC @ 0x%02x", + active_phy_addr[i]); + phy[i].init = gen_init_phy; + phy[i].is_phy_connected = gen_is_phy_connected; + phy[i].get_link_speed = gen_get_link_speed; + phy[i].auto_negotiate = gen_auto_negotiate; + } + + debug("Ethernet PHY: %s\n", phy[i].name); + + int retval; + struct mii_dev *mdiodev = mdio_alloc(); + if (!mdiodev) + return -ENOMEM; + strncpy(mdiodev->name, phy[i].name, MDIO_NAME_LEN); + mdiodev->read = davinci_mii_phy_read; + mdiodev->write = davinci_mii_phy_write; + + retval = mdio_register(mdiodev); + if (retval < 0) + return retval; +#ifdef DAVINCI_EMAC_GIG_ENABLE +#define PHY_CONF_REG 22 + /* Enable PHY to clock out TX_CLK */ + davinci_eth_phy_read(active_phy_addr[i], PHY_CONF_REG, &tmp); + tmp |= PHY_CONF_TXCLKEN; + davinci_eth_phy_write(active_phy_addr[i], PHY_CONF_REG, tmp); + davinci_eth_phy_read(active_phy_addr[i], PHY_CONF_REG, &tmp); +#endif + } + +#if defined(CONFIG_TI816X) || (defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \ + defined(CONFIG_MACH_DAVINCI_DA850_EVM) && \ + !defined(CONFIG_DRIVER_TI_EMAC_RMII_NO_NEGOTIATE)) + for (i = 0; i < num_phy; i++) { + if (phy[i].is_phy_connected(i)) + phy[i].auto_negotiate(i); + } +#endif + return(1); +} diff --git a/drivers/net/ti/davinci_emac.h b/drivers/net/ti/davinci_emac.h new file mode 100644 index 0000000000..695855b4d5 --- /dev/null +++ b/drivers/net/ti/davinci_emac.h @@ -0,0 +1,304 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2011 Ilya Yanok, Emcraft Systems + * + * Based on: mach-davinci/emac_defs.h + * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> + */ + +#ifndef _DAVINCI_EMAC_H_ +#define _DAVINCI_EMAC_H_ +/* Ethernet Min/Max packet size */ +#define EMAC_MIN_ETHERNET_PKT_SIZE 60 +#define EMAC_MAX_ETHERNET_PKT_SIZE 1518 +/* Buffer size (should be aligned on 32 byte and cache line) */ +#define EMAC_RXBUF_SIZE ALIGN(ALIGN(EMAC_MAX_ETHERNET_PKT_SIZE, 32),\ + ARCH_DMA_MINALIGN) + +/* Number of RX packet buffers + * NOTE: Only 1 buffer supported as of now + */ +#define EMAC_MAX_RX_BUFFERS 10 + + +/*********************************************** + ******** Internally used macros *************** + ***********************************************/ + +#define EMAC_CH_TX 1 +#define EMAC_CH_RX 0 + +/* Each descriptor occupies 4 words, lets start RX desc's at 0 and + * reserve space for 64 descriptors max + */ +#define EMAC_RX_DESC_BASE 0x0 +#define EMAC_TX_DESC_BASE 0x1000 + +/* EMAC Teardown value */ +#define EMAC_TEARDOWN_VALUE 0xfffffffc + +/* MII Status Register */ +#define MII_STATUS_REG 1 +/* PHY Configuration register */ +#define PHY_CONF_TXCLKEN (1 << 5) + +/* Number of statistics registers */ +#define EMAC_NUM_STATS 36 + + +/* EMAC Descriptor */ +typedef volatile struct _emac_desc +{ + u_int32_t next; /* Pointer to next descriptor + in chain */ + u_int8_t *buffer; /* Pointer to data buffer */ + u_int32_t buff_off_len; /* Buffer Offset(MSW) and Length(LSW) */ + u_int32_t pkt_flag_len; /* Packet Flags(MSW) and Length(LSW) */ +} emac_desc; + +/* CPPI bit positions */ +#define EMAC_CPPI_SOP_BIT (0x80000000) +#define EMAC_CPPI_EOP_BIT (0x40000000) +#define EMAC_CPPI_OWNERSHIP_BIT (0x20000000) +#define EMAC_CPPI_EOQ_BIT (0x10000000) +#define EMAC_CPPI_TEARDOWN_COMPLETE_BIT (0x08000000) +#define EMAC_CPPI_PASS_CRC_BIT (0x04000000) + +#define EMAC_CPPI_RX_ERROR_FRAME (0x03fc0000) + +#define EMAC_MACCONTROL_MIIEN_ENABLE (0x20) +#define EMAC_MACCONTROL_FULLDUPLEX_ENABLE (0x1) +#define EMAC_MACCONTROL_GIGABIT_ENABLE (1 << 7) +#define EMAC_MACCONTROL_GIGFORCE (1 << 17) +#define EMAC_MACCONTROL_RMIISPEED_100 (1 << 15) + +#define EMAC_MAC_ADDR_MATCH (1 << 19) +#define EMAC_MAC_ADDR_IS_VALID (1 << 20) + +#define EMAC_RXMBPENABLE_RXCAFEN_ENABLE (0x200000) +#define EMAC_RXMBPENABLE_RXBROADEN (0x2000) + + +#define MDIO_CONTROL_IDLE (0x80000000) +#define MDIO_CONTROL_ENABLE (0x40000000) +#define MDIO_CONTROL_FAULT_ENABLE (0x40000) +#define MDIO_CONTROL_FAULT (0x80000) +#define MDIO_USERACCESS0_GO (0x80000000) +#define MDIO_USERACCESS0_WRITE_READ (0x0) +#define MDIO_USERACCESS0_WRITE_WRITE (0x40000000) +#define MDIO_USERACCESS0_ACK (0x20000000) + +/* Ethernet MAC Registers Structure */ +typedef struct { + dv_reg TXIDVER; + dv_reg TXCONTROL; + dv_reg TXTEARDOWN; + u_int8_t RSVD0[4]; + dv_reg RXIDVER; + dv_reg RXCONTROL; + dv_reg RXTEARDOWN; + u_int8_t RSVD1[100]; + dv_reg TXINTSTATRAW; + dv_reg TXINTSTATMASKED; + dv_reg TXINTMASKSET; + dv_reg TXINTMASKCLEAR; + dv_reg MACINVECTOR; + u_int8_t RSVD2[12]; + dv_reg RXINTSTATRAW; + dv_reg RXINTSTATMASKED; + dv_reg RXINTMASKSET; + dv_reg RXINTMASKCLEAR; + dv_reg MACINTSTATRAW; + dv_reg MACINTSTATMASKED; + dv_reg MACINTMASKSET; + dv_reg MACINTMASKCLEAR; + u_int8_t RSVD3[64]; + dv_reg RXMBPENABLE; + dv_reg RXUNICASTSET; + dv_reg RXUNICASTCLEAR; + dv_reg RXMAXLEN; + dv_reg RXBUFFEROFFSET; + dv_reg RXFILTERLOWTHRESH; + u_int8_t RSVD4[8]; + dv_reg RX0FLOWTHRESH; + dv_reg RX1FLOWTHRESH; + dv_reg RX2FLOWTHRESH; + dv_reg RX3FLOWTHRESH; + dv_reg RX4FLOWTHRESH; + dv_reg RX5FLOWTHRESH; + dv_reg RX6FLOWTHRESH; + dv_reg RX7FLOWTHRESH; + dv_reg RX0FREEBUFFER; + dv_reg RX1FREEBUFFER; + dv_reg RX2FREEBUFFER; + dv_reg RX3FREEBUFFER; + dv_reg RX4FREEBUFFER; + dv_reg RX5FREEBUFFER; + dv_reg RX6FREEBUFFER; + dv_reg RX7FREEBUFFER; + dv_reg MACCONTROL; + dv_reg MACSTATUS; + dv_reg EMCONTROL; + dv_reg FIFOCONTROL; + dv_reg MACCONFIG; + dv_reg SOFTRESET; + u_int8_t RSVD5[88]; + dv_reg MACSRCADDRLO; + dv_reg MACSRCADDRHI; + dv_reg MACHASH1; + dv_reg MACHASH2; + dv_reg BOFFTEST; + dv_reg TPACETEST; + dv_reg RXPAUSE; + dv_reg TXPAUSE; + u_int8_t RSVD6[16]; + dv_reg RXGOODFRAMES; + dv_reg RXBCASTFRAMES; + dv_reg RXMCASTFRAMES; + dv_reg RXPAUSEFRAMES; + dv_reg RXCRCERRORS; + dv_reg RXALIGNCODEERRORS; + dv_reg RXOVERSIZED; + dv_reg RXJABBER; + dv_reg RXUNDERSIZED; + dv_reg RXFRAGMENTS; + dv_reg RXFILTERED; + dv_reg RXQOSFILTERED; + dv_reg RXOCTETS; + dv_reg TXGOODFRAMES; + dv_reg TXBCASTFRAMES; + dv_reg TXMCASTFRAMES; + dv_reg TXPAUSEFRAMES; + dv_reg TXDEFERRED; + dv_reg TXCOLLISION; + dv_reg TXSINGLECOLL; + dv_reg TXMULTICOLL; + dv_reg TXEXCESSIVECOLL; + dv_reg TXLATECOLL; + dv_reg TXUNDERRUN; + dv_reg TXCARRIERSENSE; + dv_reg TXOCTETS; + dv_reg FRAME64; + dv_reg FRAME65T127; + dv_reg FRAME128T255; + dv_reg FRAME256T511; + dv_reg FRAME512T1023; + dv_reg FRAME1024TUP; + dv_reg NETOCTETS; + dv_reg RXSOFOVERRUNS; + dv_reg RXMOFOVERRUNS; + dv_reg RXDMAOVERRUNS; + u_int8_t RSVD7[624]; + dv_reg MACADDRLO; + dv_reg MACADDRHI; + dv_reg MACINDEX; + u_int8_t RSVD8[244]; + dv_reg TX0HDP; + dv_reg TX1HDP; + dv_reg TX2HDP; + dv_reg TX3HDP; + dv_reg TX4HDP; + dv_reg TX5HDP; + dv_reg TX6HDP; + dv_reg TX7HDP; + dv_reg RX0HDP; + dv_reg RX1HDP; + dv_reg RX2HDP; + dv_reg RX3HDP; + dv_reg RX4HDP; + dv_reg RX5HDP; + dv_reg RX6HDP; + dv_reg RX7HDP; + dv_reg TX0CP; + dv_reg TX1CP; + dv_reg TX2CP; + dv_reg TX3CP; + dv_reg TX4CP; + dv_reg TX5CP; + dv_reg TX6CP; + dv_reg TX7CP; + dv_reg RX0CP; + dv_reg RX1CP; + dv_reg RX2CP; + dv_reg RX3CP; + dv_reg RX4CP; + dv_reg RX5CP; + dv_reg RX6CP; + dv_reg RX7CP; +} emac_regs; + +/* EMAC Wrapper Registers Structure */ +typedef struct { +#ifdef DAVINCI_EMAC_VERSION2 + dv_reg idver; + dv_reg softrst; + dv_reg emctrl; + dv_reg c0rxthreshen; + dv_reg c0rxen; + dv_reg c0txen; + dv_reg c0miscen; + dv_reg c1rxthreshen; + dv_reg c1rxen; + dv_reg c1txen; + dv_reg c1miscen; + dv_reg c2rxthreshen; + dv_reg c2rxen; + dv_reg c2txen; + dv_reg c2miscen; + dv_reg c0rxthreshstat; + dv_reg c0rxstat; + dv_reg c0txstat; + dv_reg c0miscstat; + dv_reg c1rxthreshstat; + dv_reg c1rxstat; + dv_reg c1txstat; + dv_reg c1miscstat; + dv_reg c2rxthreshstat; + dv_reg c2rxstat; + dv_reg c2txstat; + dv_reg c2miscstat; + dv_reg c0rximax; + dv_reg c0tximax; + dv_reg c1rximax; + dv_reg c1tximax; + dv_reg c2rximax; + dv_reg c2tximax; +#else + u_int8_t RSVD0[4100]; + dv_reg EWCTL; + dv_reg EWINTTCNT; +#endif +} ewrap_regs; + +/* EMAC MDIO Registers Structure */ +typedef struct { + dv_reg VERSION; + dv_reg CONTROL; + dv_reg ALIVE; + dv_reg LINK; + dv_reg LINKINTRAW; + dv_reg LINKINTMASKED; + u_int8_t RSVD0[8]; + dv_reg USERINTRAW; + dv_reg USERINTMASKED; + dv_reg USERINTMASKSET; + dv_reg USERINTMASKCLEAR; + u_int8_t RSVD1[80]; + dv_reg USERACCESS0; + dv_reg USERPHYSEL0; + dv_reg USERACCESS1; + dv_reg USERPHYSEL1; +} mdio_regs; + +int davinci_eth_phy_read(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t *data); +int davinci_eth_phy_write(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t data); + +typedef struct { + char name[64]; + int (*init)(int phy_addr); + int (*is_phy_connected)(int phy_addr); + int (*get_link_speed)(int phy_addr); + int (*auto_negotiate)(int phy_addr); +} phy_t; + +#endif /* _DAVINCI_EMAC_H_ */ diff --git a/drivers/net/ti/keystone_net.c b/drivers/net/ti/keystone_net.c new file mode 100644 index 0000000000..a3ba91cc3f --- /dev/null +++ b/drivers/net/ti/keystone_net.c @@ -0,0 +1,801 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Ethernet driver for TI K2HK EVM. + * + * (C) Copyright 2012-2014 + * Texas Instruments Incorporated, <www.ti.com> + */ +#include <common.h> +#include <command.h> +#include <console.h> + +#include <dm.h> +#include <dm/lists.h> + +#include <net.h> +#include <phy.h> +#include <errno.h> +#include <miiphy.h> +#include <malloc.h> +#include <asm/ti-common/keystone_nav.h> +#include <asm/ti-common/keystone_net.h> +#include <asm/ti-common/keystone_serdes.h> +#include <asm/arch/psc_defs.h> + +#include "cpsw_mdio.h" + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef KEYSTONE2_EMAC_GIG_ENABLE +#define emac_gigabit_enable(x) keystone2_eth_gigabit_enable(x) +#else +#define emac_gigabit_enable(x) /* no gigabit to enable */ +#endif + +#define RX_BUFF_NUMS 24 +#define RX_BUFF_LEN 1520 +#define MAX_SIZE_STREAM_BUFFER RX_BUFF_LEN +#define SGMII_ANEG_TIMEOUT 4000 + +static u8 rx_buffs[RX_BUFF_NUMS * RX_BUFF_LEN] __aligned(16); + +enum link_type { + LINK_TYPE_SGMII_MAC_TO_MAC_AUTO = 0, + LINK_TYPE_SGMII_MAC_TO_PHY_MODE = 1, + LINK_TYPE_SGMII_MAC_TO_MAC_FORCED_MODE = 2, + LINK_TYPE_SGMII_MAC_TO_FIBRE_MODE = 3, + LINK_TYPE_SGMII_MAC_TO_PHY_NO_MDIO_MODE = 4, + LINK_TYPE_RGMII_LINK_MAC_PHY = 5, + LINK_TYPE_RGMII_LINK_MAC_MAC_FORCED = 6, + LINK_TYPE_RGMII_LINK_MAC_PHY_NO_MDIO = 7, + LINK_TYPE_10G_MAC_TO_PHY_MODE = 10, + LINK_TYPE_10G_MAC_TO_MAC_FORCED_MODE = 11, +}; + +#define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \ + ((mac)[2] << 16) | ((mac)[3] << 24)) +#define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8)) + +#ifdef CONFIG_KSNET_NETCP_V1_0 + +#define EMAC_EMACSW_BASE_OFS 0x90800 +#define EMAC_EMACSW_PORT_BASE_OFS (EMAC_EMACSW_BASE_OFS + 0x60) + +/* CPSW Switch slave registers */ +#define CPGMACSL_REG_SA_LO 0x10 +#define CPGMACSL_REG_SA_HI 0x14 + +#define DEVICE_EMACSW_BASE(base, x) ((base) + EMAC_EMACSW_PORT_BASE_OFS + \ + (x) * 0x30) + +#elif defined(CONFIG_KSNET_NETCP_V1_5) + +#define EMAC_EMACSW_PORT_BASE_OFS 0x222000 + +/* CPSW Switch slave registers */ +#define CPGMACSL_REG_SA_LO 0x308 +#define CPGMACSL_REG_SA_HI 0x30c + +#define DEVICE_EMACSW_BASE(base, x) ((base) + EMAC_EMACSW_PORT_BASE_OFS + \ + (x) * 0x1000) + +#endif + + +struct ks2_eth_priv { + struct udevice *dev; + struct phy_device *phydev; + struct mii_dev *mdio_bus; + int phy_addr; + phy_interface_t phy_if; + int sgmii_link_type; + void *mdio_base; + struct rx_buff_desc net_rx_buffs; + struct pktdma_cfg *netcp_pktdma; + void *hd; + int slave_port; + enum link_type link_type; + bool emac_open; + bool has_mdio; +}; + +static void __attribute__((unused)) + keystone2_eth_gigabit_enable(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + + /* + * Check if link detected is giga-bit + * If Gigabit mode detected, enable gigbit in MAC + */ + if (priv->has_mdio) { + if (priv->phydev->speed != 1000) + return; + } + + writel(readl(DEVICE_EMACSL_BASE(priv->slave_port - 1) + + CPGMACSL_REG_CTL) | + EMAC_MACCONTROL_GIGFORCE | EMAC_MACCONTROL_GIGABIT_ENABLE, + DEVICE_EMACSL_BASE(priv->slave_port - 1) + CPGMACSL_REG_CTL); +} + +#ifdef CONFIG_SOC_K2G +int keystone_rgmii_config(struct phy_device *phy_dev) +{ + unsigned int i, status; + + i = 0; + do { + if (i > SGMII_ANEG_TIMEOUT) { + puts(" TIMEOUT !\n"); + phy_dev->link = 0; + return 0; + } + + if (ctrlc()) { + puts("user interrupt!\n"); + phy_dev->link = 0; + return -EINTR; + } + + if ((i++ % 500) == 0) + printf("."); + + udelay(1000); /* 1 ms */ + status = readl(RGMII_STATUS_REG); + } while (!(status & RGMII_REG_STATUS_LINK)); + + puts(" done\n"); + + return 0; +} +#else +int keystone_sgmii_config(struct phy_device *phy_dev, int port, int interface) +{ + unsigned int i, status, mask; + unsigned int mr_adv_ability, control; + + switch (interface) { + case SGMII_LINK_MAC_MAC_AUTONEG: + mr_adv_ability = (SGMII_REG_MR_ADV_ENABLE | + SGMII_REG_MR_ADV_LINK | + SGMII_REG_MR_ADV_FULL_DUPLEX | + SGMII_REG_MR_ADV_GIG_MODE); + control = (SGMII_REG_CONTROL_MASTER | + SGMII_REG_CONTROL_AUTONEG); + + break; + case SGMII_LINK_MAC_PHY: + case SGMII_LINK_MAC_PHY_FORCED: + mr_adv_ability = SGMII_REG_MR_ADV_ENABLE; + control = SGMII_REG_CONTROL_AUTONEG; + + break; + case SGMII_LINK_MAC_MAC_FORCED: + mr_adv_ability = (SGMII_REG_MR_ADV_ENABLE | + SGMII_REG_MR_ADV_LINK | + SGMII_REG_MR_ADV_FULL_DUPLEX | + SGMII_REG_MR_ADV_GIG_MODE); + control = SGMII_REG_CONTROL_MASTER; + + break; + case SGMII_LINK_MAC_FIBER: + mr_adv_ability = 0x20; + control = SGMII_REG_CONTROL_AUTONEG; + + break; + default: + mr_adv_ability = SGMII_REG_MR_ADV_ENABLE; + control = SGMII_REG_CONTROL_AUTONEG; + } + + __raw_writel(0, SGMII_CTL_REG(port)); + + /* + * Wait for the SerDes pll to lock, + * but don't trap if lock is never read + */ + for (i = 0; i < 1000; i++) { + udelay(2000); + status = __raw_readl(SGMII_STATUS_REG(port)); + if ((status & SGMII_REG_STATUS_LOCK) != 0) + break; + } + + __raw_writel(mr_adv_ability, SGMII_MRADV_REG(port)); + __raw_writel(control, SGMII_CTL_REG(port)); + + + mask = SGMII_REG_STATUS_LINK; + + if (control & SGMII_REG_CONTROL_AUTONEG) + mask |= SGMII_REG_STATUS_AUTONEG; + + status = __raw_readl(SGMII_STATUS_REG(port)); + if ((status & mask) == mask) + return 0; + + printf("\n%s Waiting for SGMII auto negotiation to complete", + phy_dev->dev->name); + while ((status & mask) != mask) { + /* + * Timeout reached ? + */ + if (i > SGMII_ANEG_TIMEOUT) { + puts(" TIMEOUT !\n"); + phy_dev->link = 0; + return 0; + } + + if (ctrlc()) { + puts("user interrupt!\n"); + phy_dev->link = 0; + return -EINTR; + } + + if ((i++ % 500) == 0) + printf("."); + + udelay(1000); /* 1 ms */ + status = __raw_readl(SGMII_STATUS_REG(port)); + } + puts(" done\n"); + + return 0; +} +#endif + +int mac_sl_reset(u32 port) +{ + u32 i, v; + + if (port >= DEVICE_N_GMACSL_PORTS) + return GMACSL_RET_INVALID_PORT; + + /* Set the soft reset bit */ + writel(CPGMAC_REG_RESET_VAL_RESET, + DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_RESET); + + /* Wait for the bit to clear */ + for (i = 0; i < DEVICE_EMACSL_RESET_POLL_COUNT; i++) { + v = readl(DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_RESET); + if ((v & CPGMAC_REG_RESET_VAL_RESET_MASK) != + CPGMAC_REG_RESET_VAL_RESET) + return GMACSL_RET_OK; + } + + /* Timeout on the reset */ + return GMACSL_RET_WARN_RESET_INCOMPLETE; +} + +int mac_sl_config(u_int16_t port, struct mac_sl_cfg *cfg) +{ + u32 v, i; + int ret = GMACSL_RET_OK; + + if (port >= DEVICE_N_GMACSL_PORTS) + return GMACSL_RET_INVALID_PORT; + + if (cfg->max_rx_len > CPGMAC_REG_MAXLEN_LEN) { + cfg->max_rx_len = CPGMAC_REG_MAXLEN_LEN; + ret = GMACSL_RET_WARN_MAXLEN_TOO_BIG; + } + + /* Must wait if the device is undergoing reset */ + for (i = 0; i < DEVICE_EMACSL_RESET_POLL_COUNT; i++) { + v = readl(DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_RESET); + if ((v & CPGMAC_REG_RESET_VAL_RESET_MASK) != + CPGMAC_REG_RESET_VAL_RESET) + break; + } + + if (i == DEVICE_EMACSL_RESET_POLL_COUNT) + return GMACSL_RET_CONFIG_FAIL_RESET_ACTIVE; + + writel(cfg->max_rx_len, DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_MAXLEN); + writel(cfg->ctl, DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_CTL); + +#ifndef CONFIG_SOC_K2HK + /* Map RX packet flow priority to 0 */ + writel(0, DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_RX_PRI_MAP); +#endif + + return ret; +} + +int ethss_config(u32 ctl, u32 max_pkt_size) +{ + u32 i; + + /* Max length register */ + writel(max_pkt_size, DEVICE_CPSW_BASE + CPSW_REG_MAXLEN); + + /* Control register */ + writel(ctl, DEVICE_CPSW_BASE + CPSW_REG_CTL); + + /* All statistics enabled by default */ + writel(CPSW_REG_VAL_STAT_ENABLE_ALL, + DEVICE_CPSW_BASE + CPSW_REG_STAT_PORT_EN); + + /* Reset and enable the ALE */ + writel(CPSW_REG_VAL_ALE_CTL_RESET_AND_ENABLE | + CPSW_REG_VAL_ALE_CTL_BYPASS, + DEVICE_CPSW_BASE + CPSW_REG_ALE_CONTROL); + + /* All ports put into forward mode */ + for (i = 0; i < DEVICE_CPSW_NUM_PORTS; i++) + writel(CPSW_REG_VAL_PORTCTL_FORWARD_MODE, + DEVICE_CPSW_BASE + CPSW_REG_ALE_PORTCTL(i)); + + return 0; +} + +int ethss_start(void) +{ + int i; + struct mac_sl_cfg cfg; + + cfg.max_rx_len = MAX_SIZE_STREAM_BUFFER; + cfg.ctl = GMACSL_ENABLE | GMACSL_RX_ENABLE_EXT_CTL; + + for (i = 0; i < DEVICE_N_GMACSL_PORTS; i++) { + mac_sl_reset(i); + mac_sl_config(i, &cfg); + } + + return 0; +} + +int ethss_stop(void) +{ + int i; + + for (i = 0; i < DEVICE_N_GMACSL_PORTS; i++) + mac_sl_reset(i); + + return 0; +} + +struct ks2_serdes ks2_serdes_sgmii_156p25mhz = { + .clk = SERDES_CLOCK_156P25M, + .rate = SERDES_RATE_5G, + .rate_mode = SERDES_QUARTER_RATE, + .intf = SERDES_PHY_SGMII, + .loopback = 0, +}; + +#ifndef CONFIG_SOC_K2G +static void keystone2_net_serdes_setup(void) +{ + ks2_serdes_init(CONFIG_KSNET_SERDES_SGMII_BASE, + &ks2_serdes_sgmii_156p25mhz, + CONFIG_KSNET_SERDES_LANES_PER_SGMII); + +#if defined(CONFIG_SOC_K2E) || defined(CONFIG_SOC_K2L) + ks2_serdes_init(CONFIG_KSNET_SERDES_SGMII2_BASE, + &ks2_serdes_sgmii_156p25mhz, + CONFIG_KSNET_SERDES_LANES_PER_SGMII); +#endif + + /* wait till setup */ + udelay(5000); +} +#endif + +static int ks2_eth_start(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + +#ifdef CONFIG_SOC_K2G + keystone_rgmii_config(priv->phydev); +#else + keystone_sgmii_config(priv->phydev, priv->slave_port - 1, + priv->sgmii_link_type); +#endif + + udelay(10000); + + /* On chip switch configuration */ + ethss_config(target_get_switch_ctl(), SWITCH_MAX_PKT_SIZE); + + qm_init(); + + if (ksnav_init(priv->netcp_pktdma, &priv->net_rx_buffs)) { + pr_err("ksnav_init failed\n"); + goto err_knav_init; + } + + /* + * Streaming switch configuration. If not present this + * statement is defined to void in target.h. + * If present this is usually defined to a series of register writes + */ + hw_config_streaming_switch(); + + if (priv->has_mdio) { + phy_startup(priv->phydev); + if (priv->phydev->link == 0) { + pr_err("phy startup failed\n"); + goto err_phy_start; + } + } + + emac_gigabit_enable(dev); + + ethss_start(); + + priv->emac_open = true; + + return 0; + +err_phy_start: + ksnav_close(priv->netcp_pktdma); +err_knav_init: + qm_close(); + + return -EFAULT; +} + +static int ks2_eth_send(struct udevice *dev, void *packet, int length) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + + genphy_update_link(priv->phydev); + if (priv->phydev->link == 0) + return -1; + + if (length < EMAC_MIN_ETHERNET_PKT_SIZE) + length = EMAC_MIN_ETHERNET_PKT_SIZE; + + return ksnav_send(priv->netcp_pktdma, (u32 *)packet, + length, (priv->slave_port) << 16); +} + +static int ks2_eth_recv(struct udevice *dev, int flags, uchar **packetp) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + int pkt_size; + u32 *pkt = NULL; + + priv->hd = ksnav_recv(priv->netcp_pktdma, &pkt, &pkt_size); + if (priv->hd == NULL) + return -EAGAIN; + + *packetp = (uchar *)pkt; + + return pkt_size; +} + +static int ks2_eth_free_pkt(struct udevice *dev, uchar *packet, + int length) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + + ksnav_release_rxhd(priv->netcp_pktdma, priv->hd); + + return 0; +} + +static void ks2_eth_stop(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + + if (!priv->emac_open) + return; + ethss_stop(); + + ksnav_close(priv->netcp_pktdma); + qm_close(); + phy_shutdown(priv->phydev); + priv->emac_open = false; +} + +int ks2_eth_read_rom_hwaddr(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + struct eth_pdata *pdata = dev_get_platdata(dev); + u32 maca = 0; + u32 macb = 0; + + /* Read the e-fuse mac address */ + if (priv->slave_port == 1) { + maca = __raw_readl(MAC_ID_BASE_ADDR); + macb = __raw_readl(MAC_ID_BASE_ADDR + 4); + } + + pdata->enetaddr[0] = (macb >> 8) & 0xff; + pdata->enetaddr[1] = (macb >> 0) & 0xff; + pdata->enetaddr[2] = (maca >> 24) & 0xff; + pdata->enetaddr[3] = (maca >> 16) & 0xff; + pdata->enetaddr[4] = (maca >> 8) & 0xff; + pdata->enetaddr[5] = (maca >> 0) & 0xff; + + return 0; +} + +int ks2_eth_write_hwaddr(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + struct eth_pdata *pdata = dev_get_platdata(dev); + + writel(mac_hi(pdata->enetaddr), + DEVICE_EMACSW_BASE(pdata->iobase, priv->slave_port - 1) + + CPGMACSL_REG_SA_HI); + writel(mac_lo(pdata->enetaddr), + DEVICE_EMACSW_BASE(pdata->iobase, priv->slave_port - 1) + + CPGMACSL_REG_SA_LO); + + return 0; +} + +static int ks2_eth_probe(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + struct mii_dev *mdio_bus; + + priv->dev = dev; + priv->emac_open = false; + + /* These clock enables has to be moved to common location */ + if (cpu_is_k2g()) + writel(KS2_ETHERNET_RGMII, KS2_ETHERNET_CFG); + + /* By default, select PA PLL clock as PA clock source */ +#ifndef CONFIG_SOC_K2G + if (psc_enable_module(KS2_LPSC_PA)) + return -EACCES; +#endif + if (psc_enable_module(KS2_LPSC_CPGMAC)) + return -EACCES; + if (psc_enable_module(KS2_LPSC_CRYPTO)) + return -EACCES; + + if (cpu_is_k2e() || cpu_is_k2l()) + pll_pa_clk_sel(); + + priv->net_rx_buffs.buff_ptr = rx_buffs; + priv->net_rx_buffs.num_buffs = RX_BUFF_NUMS; + priv->net_rx_buffs.buff_len = RX_BUFF_LEN; + + if (priv->slave_port == 1) { +#ifndef CONFIG_SOC_K2G + keystone2_net_serdes_setup(); +#endif + /* + * Register MDIO bus for slave 0 only, other slave have + * to re-use the same + */ + mdio_bus = cpsw_mdio_init("ethernet-mdio", + (u32)priv->mdio_base, + EMAC_MDIO_CLOCK_FREQ, + EMAC_MDIO_BUS_FREQ); + if (!mdio_bus) { + pr_err("MDIO alloc failed\n"); + return -ENOMEM; + } + priv->mdio_bus = mdio_bus; + } else { + /* Get the MDIO bus from slave 0 device */ + struct ks2_eth_priv *parent_priv; + + parent_priv = dev_get_priv(dev->parent); + priv->mdio_bus = parent_priv->mdio_bus; + priv->mdio_base = parent_priv->mdio_base; + } + + priv->netcp_pktdma = &netcp_pktdma; + + if (priv->has_mdio) { + priv->phydev = phy_connect(priv->mdio_bus, priv->phy_addr, + dev, priv->phy_if); + phy_config(priv->phydev); + } + + return 0; +} + +int ks2_eth_remove(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + + cpsw_mdio_free(priv->mdio_bus); + + return 0; +} + +static const struct eth_ops ks2_eth_ops = { + .start = ks2_eth_start, + .send = ks2_eth_send, + .recv = ks2_eth_recv, + .free_pkt = ks2_eth_free_pkt, + .stop = ks2_eth_stop, + .read_rom_hwaddr = ks2_eth_read_rom_hwaddr, + .write_hwaddr = ks2_eth_write_hwaddr, +}; + +static int ks2_eth_bind_slaves(struct udevice *dev, int gbe, int *gbe_0) +{ + const void *fdt = gd->fdt_blob; + struct udevice *sl_dev; + int interfaces; + int sec_slave; + int slave; + int ret; + char *slave_name; + + interfaces = fdt_subnode_offset(fdt, gbe, "interfaces"); + fdt_for_each_subnode(slave, fdt, interfaces) { + int slave_no; + + slave_no = fdtdec_get_int(fdt, slave, "slave-port", -ENOENT); + if (slave_no == -ENOENT) + continue; + + if (slave_no == 0) { + /* This is the current eth device */ + *gbe_0 = slave; + } else { + /* Slave devices to be registered */ + slave_name = malloc(20); + snprintf(slave_name, 20, "netcp@slave-%d", slave_no); + ret = device_bind_driver_to_node(dev, "eth_ks2_sl", + slave_name, offset_to_ofnode(slave), + &sl_dev); + if (ret) { + pr_err("ks2_net - not able to bind slave interfaces\n"); + return ret; + } + } + } + + sec_slave = fdt_subnode_offset(fdt, gbe, "secondary-slave-ports"); + fdt_for_each_subnode(slave, fdt, sec_slave) { + int slave_no; + + slave_no = fdtdec_get_int(fdt, slave, "slave-port", -ENOENT); + if (slave_no == -ENOENT) + continue; + + /* Slave devices to be registered */ + slave_name = malloc(20); + snprintf(slave_name, 20, "netcp@slave-%d", slave_no); + ret = device_bind_driver_to_node(dev, "eth_ks2_sl", slave_name, + offset_to_ofnode(slave), &sl_dev); + if (ret) { + pr_err("ks2_net - not able to bind slave interfaces\n"); + return ret; + } + } + + return 0; +} + +static int ks2_eth_parse_slave_interface(int netcp, int slave, + struct ks2_eth_priv *priv, + struct eth_pdata *pdata) +{ + const void *fdt = gd->fdt_blob; + int mdio; + int phy; + int dma_count; + u32 dma_channel[8]; + + priv->slave_port = fdtdec_get_int(fdt, slave, "slave-port", -1); + priv->net_rx_buffs.rx_flow = priv->slave_port * 8; + + /* U-Boot slave port number starts with 1 instead of 0 */ + priv->slave_port += 1; + + dma_count = fdtdec_get_int_array_count(fdt, netcp, + "ti,navigator-dmas", + dma_channel, 8); + + if (dma_count > (2 * priv->slave_port)) { + int dma_idx; + + dma_idx = priv->slave_port * 2 - 1; + priv->net_rx_buffs.rx_flow = dma_channel[dma_idx]; + } + + priv->link_type = fdtdec_get_int(fdt, slave, "link-interface", -1); + + phy = fdtdec_lookup_phandle(fdt, slave, "phy-handle"); + if (phy >= 0) { + priv->phy_addr = fdtdec_get_int(fdt, phy, "reg", -1); + + mdio = fdt_parent_offset(fdt, phy); + if (mdio < 0) { + pr_err("mdio dt not found\n"); + return -ENODEV; + } + priv->mdio_base = (void *)fdtdec_get_addr(fdt, mdio, "reg"); + } + + if (priv->link_type == LINK_TYPE_SGMII_MAC_TO_PHY_MODE) { + priv->phy_if = PHY_INTERFACE_MODE_SGMII; + pdata->phy_interface = priv->phy_if; + priv->sgmii_link_type = SGMII_LINK_MAC_PHY; + priv->has_mdio = true; + } else if (priv->link_type == LINK_TYPE_RGMII_LINK_MAC_PHY) { + priv->phy_if = PHY_INTERFACE_MODE_RGMII; + pdata->phy_interface = priv->phy_if; + priv->has_mdio = true; + } + + return 0; +} + +static int ks2_sl_eth_ofdata_to_platdata(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + struct eth_pdata *pdata = dev_get_platdata(dev); + const void *fdt = gd->fdt_blob; + int slave = dev_of_offset(dev); + int interfaces; + int gbe; + int netcp_devices; + int netcp; + + interfaces = fdt_parent_offset(fdt, slave); + gbe = fdt_parent_offset(fdt, interfaces); + netcp_devices = fdt_parent_offset(fdt, gbe); + netcp = fdt_parent_offset(fdt, netcp_devices); + + ks2_eth_parse_slave_interface(netcp, slave, priv, pdata); + + pdata->iobase = fdtdec_get_addr(fdt, netcp, "reg"); + + return 0; +} + +static int ks2_eth_ofdata_to_platdata(struct udevice *dev) +{ + struct ks2_eth_priv *priv = dev_get_priv(dev); + struct eth_pdata *pdata = dev_get_platdata(dev); + const void *fdt = gd->fdt_blob; + int gbe_0 = -ENODEV; + int netcp_devices; + int gbe; + + netcp_devices = fdt_subnode_offset(fdt, dev_of_offset(dev), + "netcp-devices"); + gbe = fdt_subnode_offset(fdt, netcp_devices, "gbe"); + + ks2_eth_bind_slaves(dev, gbe, &gbe_0); + + ks2_eth_parse_slave_interface(dev_of_offset(dev), gbe_0, priv, pdata); + + pdata->iobase = devfdt_get_addr(dev); + + return 0; +} + +static const struct udevice_id ks2_eth_ids[] = { + { .compatible = "ti,netcp-1.0" }, + { } +}; + +U_BOOT_DRIVER(eth_ks2_slave) = { + .name = "eth_ks2_sl", + .id = UCLASS_ETH, + .ofdata_to_platdata = ks2_sl_eth_ofdata_to_platdata, + .probe = ks2_eth_probe, + .remove = ks2_eth_remove, + .ops = &ks2_eth_ops, + .priv_auto_alloc_size = sizeof(struct ks2_eth_priv), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; + +U_BOOT_DRIVER(eth_ks2) = { + .name = "eth_ks2", + .id = UCLASS_ETH, + .of_match = ks2_eth_ids, + .ofdata_to_platdata = ks2_eth_ofdata_to_platdata, + .probe = ks2_eth_probe, + .remove = ks2_eth_remove, + .ops = &ks2_eth_ops, + .priv_auto_alloc_size = sizeof(struct ks2_eth_priv), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; 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