From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001 From: Angelos Mouzakitis Date: Tue, 10 Oct 2023 14:33:42 +0000 Subject: Add submodule dependency files Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec --- roms/u-boot/drivers/net/eepro100.c | 1017 ++++++++++++++++++++++++++++++++++++ 1 file changed, 1017 insertions(+) create mode 100644 roms/u-boot/drivers/net/eepro100.c (limited to 'roms/u-boot/drivers/net/eepro100.c') diff --git a/roms/u-boot/drivers/net/eepro100.c b/roms/u-boot/drivers/net/eepro100.c new file mode 100644 index 000000000..934b88121 --- /dev/null +++ b/roms/u-boot/drivers/net/eepro100.c @@ -0,0 +1,1017 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Ethernet chip registers. */ +#define SCB_STATUS 0 /* Rx/Command Unit Status *Word* */ +#define SCB_INT_ACK_BYTE 1 /* Rx/Command Unit STAT/ACK byte */ +#define SCB_CMD 2 /* Rx/Command Unit Command *Word* */ +#define SCB_INTR_CTL_BYTE 3 /* Rx/Command Unit Intr.Control Byte */ +#define SCB_POINTER 4 /* General purpose pointer. */ +#define SCB_PORT 8 /* Misc. commands and operands. */ +#define SCB_FLASH 12 /* Flash memory control. */ +#define SCB_EEPROM 14 /* EEPROM memory control. */ +#define SCB_CTRL_MDI 16 /* MDI interface control. */ +#define SCB_EARLY_RX 20 /* Early receive byte count. */ +#define SCB_GEN_CONTROL 28 /* 82559 General Control Register */ +#define SCB_GEN_STATUS 29 /* 82559 General Status register */ + +/* 82559 SCB status word defnitions */ +#define SCB_STATUS_CX 0x8000 /* CU finished command (transmit) */ +#define SCB_STATUS_FR 0x4000 /* frame received */ +#define SCB_STATUS_CNA 0x2000 /* CU left active state */ +#define SCB_STATUS_RNR 0x1000 /* receiver left ready state */ +#define SCB_STATUS_MDI 0x0800 /* MDI read/write cycle done */ +#define SCB_STATUS_SWI 0x0400 /* software generated interrupt */ +#define SCB_STATUS_FCP 0x0100 /* flow control pause interrupt */ + +#define SCB_INTACK_MASK 0xFD00 /* all the above */ + +#define SCB_INTACK_TX (SCB_STATUS_CX | SCB_STATUS_CNA) +#define SCB_INTACK_RX (SCB_STATUS_FR | SCB_STATUS_RNR) + +/* System control block commands */ +/* CU Commands */ +#define CU_NOP 0x0000 +#define CU_START 0x0010 +#define CU_RESUME 0x0020 +#define CU_STATSADDR 0x0040 /* Load Dump Statistics ctrs addr */ +#define CU_SHOWSTATS 0x0050 /* Dump statistics counters. */ +#define CU_ADDR_LOAD 0x0060 /* Base address to add to CU commands */ +#define CU_DUMPSTATS 0x0070 /* Dump then reset stats counters. */ + +/* RUC Commands */ +#define RUC_NOP 0x0000 +#define RUC_START 0x0001 +#define RUC_RESUME 0x0002 +#define RUC_ABORT 0x0004 +#define RUC_ADDR_LOAD 0x0006 /* (seems not to clear on acceptance) */ +#define RUC_RESUMENR 0x0007 + +#define CU_CMD_MASK 0x00f0 +#define RU_CMD_MASK 0x0007 + +#define SCB_M 0x0100 /* 0 = enable interrupt, 1 = disable */ +#define SCB_SWI 0x0200 /* 1 - cause device to interrupt */ + +#define CU_STATUS_MASK 0x00C0 +#define RU_STATUS_MASK 0x003C + +#define RU_STATUS_IDLE (0 << 2) +#define RU_STATUS_SUS (1 << 2) +#define RU_STATUS_NORES (2 << 2) +#define RU_STATUS_READY (4 << 2) +#define RU_STATUS_NO_RBDS_SUS ((1 << 2) | (8 << 2)) +#define RU_STATUS_NO_RBDS_NORES ((2 << 2) | (8 << 2)) +#define RU_STATUS_NO_RBDS_READY ((4 << 2) | (8 << 2)) + +/* 82559 Port interface commands. */ +#define I82559_RESET 0x00000000 /* Software reset */ +#define I82559_SELFTEST 0x00000001 /* 82559 Selftest command */ +#define I82559_SELECTIVE_RESET 0x00000002 +#define I82559_DUMP 0x00000003 +#define I82559_DUMP_WAKEUP 0x00000007 + +/* 82559 Eeprom interface. */ +#define EE_SHIFT_CLK 0x01 /* EEPROM shift clock. */ +#define EE_CS 0x02 /* EEPROM chip select. */ +#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */ +#define EE_WRITE_0 0x01 +#define EE_WRITE_1 0x05 +#define EE_DATA_READ 0x08 /* EEPROM chip data out. */ +#define EE_ENB (0x4800 | EE_CS) +#define EE_CMD_BITS 3 +#define EE_DATA_BITS 16 + +/* The EEPROM commands include the alway-set leading bit. */ +#define EE_EWENB_CMD(addr_len) (4 << (addr_len)) +#define EE_WRITE_CMD(addr_len) (5 << (addr_len)) +#define EE_READ_CMD(addr_len) (6 << (addr_len)) +#define EE_ERASE_CMD(addr_len) (7 << (addr_len)) + +/* Receive frame descriptors. */ +struct eepro100_rxfd { + u16 status; + u16 control; + u32 link; /* struct eepro100_rxfd * */ + u32 rx_buf_addr; /* void * */ + u32 count; + + u8 data[PKTSIZE_ALIGN]; +}; + +#define RFD_STATUS_C 0x8000 /* completion of received frame */ +#define RFD_STATUS_OK 0x2000 /* frame received with no errors */ + +#define RFD_CONTROL_EL 0x8000 /* 1=last RFD in RFA */ +#define RFD_CONTROL_S 0x4000 /* 1=suspend RU after receiving frame */ +#define RFD_CONTROL_H 0x0010 /* 1=RFD is a header RFD */ +#define RFD_CONTROL_SF 0x0008 /* 0=simplified, 1=flexible mode */ + +#define RFD_COUNT_MASK 0x3fff +#define RFD_COUNT_F 0x4000 +#define RFD_COUNT_EOF 0x8000 + +#define RFD_RX_CRC 0x0800 /* crc error */ +#define RFD_RX_ALIGNMENT 0x0400 /* alignment error */ +#define RFD_RX_RESOURCE 0x0200 /* out of space, no resources */ +#define RFD_RX_DMA_OVER 0x0100 /* DMA overrun */ +#define RFD_RX_SHORT 0x0080 /* short frame error */ +#define RFD_RX_LENGTH 0x0020 +#define RFD_RX_ERROR 0x0010 /* receive error */ +#define RFD_RX_NO_ADR_MATCH 0x0004 /* no address match */ +#define RFD_RX_IA_MATCH 0x0002 /* individual address does not match */ +#define RFD_RX_TCO 0x0001 /* TCO indication */ + +/* Transmit frame descriptors */ +struct eepro100_txfd { /* Transmit frame descriptor set. */ + u16 status; + u16 command; + u32 link; /* void * */ + u32 tx_desc_addr; /* Always points to the tx_buf_addr element. */ + s32 count; + + u32 tx_buf_addr0; /* void *, frame to be transmitted. */ + s32 tx_buf_size0; /* Length of Tx frame. */ + u32 tx_buf_addr1; /* void *, frame to be transmitted. */ + s32 tx_buf_size1; /* Length of Tx frame. */ +}; + +#define TXCB_CMD_TRANSMIT 0x0004 /* transmit command */ +#define TXCB_CMD_SF 0x0008 /* 0=simplified, 1=flexible mode */ +#define TXCB_CMD_NC 0x0010 /* 0=CRC insert by controller */ +#define TXCB_CMD_I 0x2000 /* generate interrupt on completion */ +#define TXCB_CMD_S 0x4000 /* suspend on completion */ +#define TXCB_CMD_EL 0x8000 /* last command block in CBL */ + +#define TXCB_COUNT_MASK 0x3fff +#define TXCB_COUNT_EOF 0x8000 + +/* The Speedo3 Rx and Tx frame/buffer descriptors. */ +struct descriptor { /* A generic descriptor. */ + u16 status; + u16 command; + u32 link; /* struct descriptor * */ + + unsigned char params[0]; +}; + +#define CONFIG_SYS_CMD_EL 0x8000 +#define CONFIG_SYS_CMD_SUSPEND 0x4000 +#define CONFIG_SYS_CMD_INT 0x2000 +#define CONFIG_SYS_CMD_IAS 0x0001 /* individual address setup */ +#define CONFIG_SYS_CMD_CONFIGURE 0x0002 /* configure */ + +#define CONFIG_SYS_STATUS_C 0x8000 +#define CONFIG_SYS_STATUS_OK 0x2000 + +/* Misc. */ +#define NUM_RX_DESC PKTBUFSRX +#define NUM_TX_DESC 1 /* Number of TX descriptors */ + +#define TOUT_LOOP 1000000 + +/* + * The parameters for a CmdConfigure operation. + * There are so many options that it would be difficult to document + * each bit. We mostly use the default or recommended settings. + */ +static const char i82558_config_cmd[] = { + 22, 0x08, 0, 1, 0, 0, 0x22, 0x03, 1, /* 1=Use MII 0=Use AUI */ + 0, 0x2E, 0, 0x60, 0x08, 0x88, + 0x68, 0, 0x40, 0xf2, 0x84, /* Disable FC */ + 0x31, 0x05, +}; + +struct eepro100_priv { + /* RX descriptor ring */ + struct eepro100_rxfd rx_ring[NUM_RX_DESC]; + /* TX descriptor ring */ + struct eepro100_txfd tx_ring[NUM_TX_DESC]; + /* RX descriptor ring pointer */ + int rx_next; + u16 rx_stat; + /* TX descriptor ring pointer */ + int tx_next; + int tx_threshold; +#ifdef CONFIG_DM_ETH + struct udevice *devno; +#else + struct eth_device dev; + pci_dev_t devno; +#endif + char *name; + void __iomem *iobase; + u8 *enetaddr; +}; + +#if defined(CONFIG_DM_ETH) +#define bus_to_phys(dev, a) dm_pci_mem_to_phys((dev), (a)) +#define phys_to_bus(dev, a) dm_pci_phys_to_mem((dev), (a)) +#elif defined(CONFIG_E500) +#define bus_to_phys(dev, a) (a) +#define phys_to_bus(dev, a) (a) +#else +#define bus_to_phys(dev, a) pci_mem_to_phys((dev), (a)) +#define phys_to_bus(dev, a) pci_phys_to_mem((dev), (a)) +#endif + +static int INW(struct eepro100_priv *priv, u_long addr) +{ + return le16_to_cpu(readw(addr + priv->iobase)); +} + +static void OUTW(struct eepro100_priv *priv, int command, u_long addr) +{ + writew(cpu_to_le16(command), addr + priv->iobase); +} + +static void OUTL(struct eepro100_priv *priv, int command, u_long addr) +{ + writel(cpu_to_le32(command), addr + priv->iobase); +} + +#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) +static int INL(struct eepro100_priv *priv, u_long addr) +{ + return le32_to_cpu(readl(addr + priv->iobase)); +} + +static int get_phyreg(struct eepro100_priv *priv, unsigned char addr, + unsigned char reg, unsigned short *value) +{ + int timeout = 50; + int cmd; + + /* read requested data */ + cmd = (2 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16); + OUTL(priv, cmd, SCB_CTRL_MDI); + + do { + udelay(1000); + cmd = INL(priv, SCB_CTRL_MDI); + } while (!(cmd & (1 << 28)) && (--timeout)); + + if (timeout == 0) + return -1; + + *value = (unsigned short)(cmd & 0xffff); + + return 0; +} + +static int set_phyreg(struct eepro100_priv *priv, unsigned char addr, + unsigned char reg, unsigned short value) +{ + int timeout = 50; + int cmd; + + /* write requested data */ + cmd = (1 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16); + OUTL(priv, cmd | value, SCB_CTRL_MDI); + + while (!(INL(priv, SCB_CTRL_MDI) & (1 << 28)) && (--timeout)) + udelay(1000); + + if (timeout == 0) + return -1; + + return 0; +} + +/* + * Check if given phyaddr is valid, i.e. there is a PHY connected. + * Do this by checking model value field from ID2 register. + */ +static int verify_phyaddr(struct eepro100_priv *priv, unsigned char addr) +{ + unsigned short value, model; + int ret; + + /* read id2 register */ + ret = get_phyreg(priv, addr, MII_PHYSID2, &value); + if (ret) { + printf("%s: mii read timeout!\n", priv->name); + return ret; + } + + /* get model */ + model = (value >> 4) & 0x003f; + if (!model) { + printf("%s: no PHY at address %d\n", priv->name, addr); + return -EINVAL; + } + + return 0; +} + +static int eepro100_miiphy_read(struct mii_dev *bus, int addr, int devad, + int reg) +{ + struct eepro100_priv *priv = bus->priv; + unsigned short value = 0; + int ret; + + ret = verify_phyaddr(priv, addr); + if (ret) + return ret; + + ret = get_phyreg(priv, addr, reg, &value); + if (ret) { + printf("%s: mii read timeout!\n", bus->name); + return ret; + } + + return value; +} + +static int eepro100_miiphy_write(struct mii_dev *bus, int addr, int devad, + int reg, u16 value) +{ + struct eepro100_priv *priv = bus->priv; + int ret; + + ret = verify_phyaddr(priv, addr); + if (ret) + return ret; + + ret = set_phyreg(priv, addr, reg, value); + if (ret) { + printf("%s: mii write timeout!\n", bus->name); + return ret; + } + + return 0; +} +#endif + +static void init_rx_ring(struct eepro100_priv *priv) +{ + struct eepro100_rxfd *rx_ring = priv->rx_ring; + int i; + + for (i = 0; i < NUM_RX_DESC; i++) { + rx_ring[i].status = 0; + rx_ring[i].control = (i == NUM_RX_DESC - 1) ? + cpu_to_le16 (RFD_CONTROL_S) : 0; + rx_ring[i].link = + cpu_to_le32(phys_to_bus(priv->devno, + (u32)&rx_ring[(i + 1) % + NUM_RX_DESC])); + rx_ring[i].rx_buf_addr = 0xffffffff; + rx_ring[i].count = cpu_to_le32(PKTSIZE_ALIGN << 16); + } + + flush_dcache_range((unsigned long)rx_ring, + (unsigned long)rx_ring + + (sizeof(*rx_ring) * NUM_RX_DESC)); + + priv->rx_next = 0; +} + +static void purge_tx_ring(struct eepro100_priv *priv) +{ + struct eepro100_txfd *tx_ring = priv->tx_ring; + + priv->tx_next = 0; + priv->tx_threshold = 0x01208000; + memset(tx_ring, 0, sizeof(*tx_ring) * NUM_TX_DESC); + + flush_dcache_range((unsigned long)tx_ring, + (unsigned long)tx_ring + + (sizeof(*tx_ring) * NUM_TX_DESC)); +} + +/* Wait for the chip get the command. */ +static int wait_for_eepro100(struct eepro100_priv *priv) +{ + int i; + + for (i = 0; INW(priv, SCB_CMD) & (CU_CMD_MASK | RU_CMD_MASK); i++) { + if (i >= TOUT_LOOP) + return 0; + } + + return 1; +} + +static int eepro100_txcmd_send(struct eepro100_priv *priv, + struct eepro100_txfd *desc) +{ + u16 rstat; + int i = 0; + + flush_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); + + if (!wait_for_eepro100(priv)) + return -ETIMEDOUT; + + OUTL(priv, phys_to_bus(priv->devno, (u32)desc), SCB_POINTER); + OUTW(priv, SCB_M | CU_START, SCB_CMD); + + while (true) { + invalidate_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); + rstat = le16_to_cpu(desc->status); + if (rstat & CONFIG_SYS_STATUS_C) + break; + + if (i++ >= TOUT_LOOP) { + printf("%s: Tx error buffer not ready\n", priv->name); + return -EINVAL; + } + } + + invalidate_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); + rstat = le16_to_cpu(desc->status); + + if (!(rstat & CONFIG_SYS_STATUS_OK)) { + printf("TX error status = 0x%08X\n", rstat); + return -EIO; + } + + return 0; +} + +/* SROM Read. */ +static int read_eeprom(struct eepro100_priv *priv, int location, int addr_len) +{ + unsigned short retval = 0; + int read_cmd = location | EE_READ_CMD(addr_len); + int i; + + OUTW(priv, EE_ENB & ~EE_CS, SCB_EEPROM); + OUTW(priv, EE_ENB, SCB_EEPROM); + + /* Shift the read command bits out. */ + for (i = 12; i >= 0; i--) { + short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; + + OUTW(priv, EE_ENB | dataval, SCB_EEPROM); + udelay(1); + OUTW(priv, EE_ENB | dataval | EE_SHIFT_CLK, SCB_EEPROM); + udelay(1); + } + OUTW(priv, EE_ENB, SCB_EEPROM); + + for (i = 15; i >= 0; i--) { + OUTW(priv, EE_ENB | EE_SHIFT_CLK, SCB_EEPROM); + udelay(1); + retval = (retval << 1) | + !!(INW(priv, SCB_EEPROM) & EE_DATA_READ); + OUTW(priv, EE_ENB, SCB_EEPROM); + udelay(1); + } + + /* Terminate the EEPROM access. */ + OUTW(priv, EE_ENB & ~EE_CS, SCB_EEPROM); + return retval; +} + +#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) +static int eepro100_initialize_mii(struct eepro100_priv *priv) +{ + /* register mii command access routines */ + struct mii_dev *mdiodev; + int ret; + + mdiodev = mdio_alloc(); + if (!mdiodev) + return -ENOMEM; + + strncpy(mdiodev->name, priv->name, MDIO_NAME_LEN); + mdiodev->read = eepro100_miiphy_read; + mdiodev->write = eepro100_miiphy_write; + mdiodev->priv = priv; + + ret = mdio_register(mdiodev); + if (ret < 0) { + mdio_free(mdiodev); + return ret; + } + + return 0; +} +#else +static int eepro100_initialize_mii(struct eepro100_priv *priv) +{ + return 0; +} +#endif + +static struct pci_device_id supported[] = { + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82557) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559ER) }, + { } +}; + +static void eepro100_get_hwaddr(struct eepro100_priv *priv) +{ + u16 sum = 0; + int i, j; + int addr_len = read_eeprom(priv, 0, 6) == 0xffff ? 8 : 6; + + for (j = 0, i = 0; i < 0x40; i++) { + u16 value = read_eeprom(priv, i, addr_len); + + sum += value; + if (i < 3) { + priv->enetaddr[j++] = value; + priv->enetaddr[j++] = value >> 8; + } + } + + if (sum != 0xBABA) { + memset(priv->enetaddr, 0, ETH_ALEN); + debug("%s: Invalid EEPROM checksum %#4.4x, check settings before activating this device!\n", + priv->name, sum); + } +} + +static int eepro100_init_common(struct eepro100_priv *priv) +{ + struct eepro100_rxfd *rx_ring = priv->rx_ring; + struct eepro100_txfd *tx_ring = priv->tx_ring; + struct eepro100_txfd *ias_cmd, *cfg_cmd; + int ret, status = -1; + int tx_cur; + + /* Reset the ethernet controller */ + OUTL(priv, I82559_SELECTIVE_RESET, SCB_PORT); + udelay(20); + + OUTL(priv, I82559_RESET, SCB_PORT); + udelay(20); + + if (!wait_for_eepro100(priv)) { + printf("Error: Can not reset ethernet controller.\n"); + goto done; + } + OUTL(priv, 0, SCB_POINTER); + OUTW(priv, SCB_M | RUC_ADDR_LOAD, SCB_CMD); + + if (!wait_for_eepro100(priv)) { + printf("Error: Can not reset ethernet controller.\n"); + goto done; + } + OUTL(priv, 0, SCB_POINTER); + OUTW(priv, SCB_M | CU_ADDR_LOAD, SCB_CMD); + + /* Initialize Rx and Tx rings. */ + init_rx_ring(priv); + purge_tx_ring(priv); + + /* Tell the adapter where the RX ring is located. */ + if (!wait_for_eepro100(priv)) { + printf("Error: Can not reset ethernet controller.\n"); + goto done; + } + + /* RX ring cache was already flushed in init_rx_ring() */ + OUTL(priv, phys_to_bus(priv->devno, (u32)&rx_ring[priv->rx_next]), + SCB_POINTER); + OUTW(priv, SCB_M | RUC_START, SCB_CMD); + + /* Send the Configure frame */ + tx_cur = priv->tx_next; + priv->tx_next = ((priv->tx_next + 1) % NUM_TX_DESC); + + cfg_cmd = &tx_ring[tx_cur]; + cfg_cmd->command = cpu_to_le16(CONFIG_SYS_CMD_SUSPEND | + CONFIG_SYS_CMD_CONFIGURE); + cfg_cmd->status = 0; + cfg_cmd->link = cpu_to_le32(phys_to_bus(priv->devno, + (u32)&tx_ring[priv->tx_next])); + + memcpy(((struct descriptor *)cfg_cmd)->params, i82558_config_cmd, + sizeof(i82558_config_cmd)); + + ret = eepro100_txcmd_send(priv, cfg_cmd); + if (ret) { + if (ret == -ETIMEDOUT) + printf("Error---CONFIG_SYS_CMD_CONFIGURE: Can not reset ethernet controller.\n"); + goto done; + } + + /* Send the Individual Address Setup frame */ + tx_cur = priv->tx_next; + priv->tx_next = ((priv->tx_next + 1) % NUM_TX_DESC); + + ias_cmd = &tx_ring[tx_cur]; + ias_cmd->command = cpu_to_le16(CONFIG_SYS_CMD_SUSPEND | + CONFIG_SYS_CMD_IAS); + ias_cmd->status = 0; + ias_cmd->link = cpu_to_le32(phys_to_bus(priv->devno, + (u32)&tx_ring[priv->tx_next])); + + memcpy(((struct descriptor *)ias_cmd)->params, priv->enetaddr, 6); + + ret = eepro100_txcmd_send(priv, ias_cmd); + if (ret) { + if (ret == -ETIMEDOUT) + printf("Error: Can not reset ethernet controller.\n"); + goto done; + } + + status = 0; + +done: + return status; +} + +static int eepro100_send_common(struct eepro100_priv *priv, + void *packet, int length) +{ + struct eepro100_txfd *tx_ring = priv->tx_ring; + struct eepro100_txfd *desc; + int ret, status = -1; + int tx_cur; + + if (length <= 0) { + printf("%s: bad packet size: %d\n", priv->name, length); + goto done; + } + + tx_cur = priv->tx_next; + priv->tx_next = (priv->tx_next + 1) % NUM_TX_DESC; + + desc = &tx_ring[tx_cur]; + desc->command = cpu_to_le16(TXCB_CMD_TRANSMIT | TXCB_CMD_SF | + TXCB_CMD_S | TXCB_CMD_EL); + desc->status = 0; + desc->count = cpu_to_le32(priv->tx_threshold); + desc->link = cpu_to_le32(phys_to_bus(priv->devno, + (u32)&tx_ring[priv->tx_next])); + desc->tx_desc_addr = cpu_to_le32(phys_to_bus(priv->devno, + (u32)&desc->tx_buf_addr0)); + desc->tx_buf_addr0 = cpu_to_le32(phys_to_bus(priv->devno, + (u_long)packet)); + desc->tx_buf_size0 = cpu_to_le32(length); + + ret = eepro100_txcmd_send(priv, &tx_ring[tx_cur]); + if (ret) { + if (ret == -ETIMEDOUT) + printf("%s: Tx error ethernet controller not ready.\n", + priv->name); + goto done; + } + + status = length; + +done: + return status; +} + +static int eepro100_recv_common(struct eepro100_priv *priv, uchar **packetp) +{ + struct eepro100_rxfd *rx_ring = priv->rx_ring; + struct eepro100_rxfd *desc; + int length; + u16 status; + + priv->rx_stat = INW(priv, SCB_STATUS); + OUTW(priv, priv->rx_stat & SCB_STATUS_RNR, SCB_STATUS); + + desc = &rx_ring[priv->rx_next]; + invalidate_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); + status = le16_to_cpu(desc->status); + + if (!(status & RFD_STATUS_C)) + return 0; + + /* Valid frame status. */ + if (status & RFD_STATUS_OK) { + /* A valid frame received. */ + length = le32_to_cpu(desc->count) & 0x3fff; + /* Pass the packet up to the protocol layers. */ + *packetp = desc->data; + return length; + } + + /* There was an error. */ + printf("RX error status = 0x%08X\n", status); + return -EINVAL; +} + +static void eepro100_free_pkt_common(struct eepro100_priv *priv) +{ + struct eepro100_rxfd *rx_ring = priv->rx_ring; + struct eepro100_rxfd *desc; + int rx_prev; + + desc = &rx_ring[priv->rx_next]; + + desc->control = cpu_to_le16(RFD_CONTROL_S); + desc->status = 0; + desc->count = cpu_to_le32(PKTSIZE_ALIGN << 16); + flush_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); + + rx_prev = (priv->rx_next + NUM_RX_DESC - 1) % NUM_RX_DESC; + desc = &rx_ring[rx_prev]; + desc->control = 0; + flush_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); + + /* Update entry information. */ + priv->rx_next = (priv->rx_next + 1) % NUM_RX_DESC; + + if (!(priv->rx_stat & SCB_STATUS_RNR)) + return; + + printf("%s: Receiver is not ready, restart it !\n", priv->name); + + /* Reinitialize Rx ring. */ + init_rx_ring(priv); + + if (!wait_for_eepro100(priv)) { + printf("Error: Can not restart ethernet controller.\n"); + return; + } + + /* RX ring cache was already flushed in init_rx_ring() */ + OUTL(priv, phys_to_bus(priv->devno, (u32)&rx_ring[priv->rx_next]), + SCB_POINTER); + OUTW(priv, SCB_M | RUC_START, SCB_CMD); +} + +static void eepro100_halt_common(struct eepro100_priv *priv) +{ + /* Reset the ethernet controller */ + OUTL(priv, I82559_SELECTIVE_RESET, SCB_PORT); + udelay(20); + + OUTL(priv, I82559_RESET, SCB_PORT); + udelay(20); + + if (!wait_for_eepro100(priv)) { + printf("Error: Can not reset ethernet controller.\n"); + goto done; + } + OUTL(priv, 0, SCB_POINTER); + OUTW(priv, SCB_M | RUC_ADDR_LOAD, SCB_CMD); + + if (!wait_for_eepro100(priv)) { + printf("Error: Can not reset ethernet controller.\n"); + goto done; + } + OUTL(priv, 0, SCB_POINTER); + OUTW(priv, SCB_M | CU_ADDR_LOAD, SCB_CMD); + +done: + return; +} + +#ifndef CONFIG_DM_ETH +static int eepro100_init(struct eth_device *dev, struct bd_info *bis) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + + return eepro100_init_common(priv); +} + +static void eepro100_halt(struct eth_device *dev) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + + eepro100_halt_common(priv); +} + +static int eepro100_send(struct eth_device *dev, void *packet, int length) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + + return eepro100_send_common(priv, packet, length); +} + +static int eepro100_recv(struct eth_device *dev) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + uchar *packet; + int ret; + + ret = eepro100_recv_common(priv, &packet); + if (ret > 0) + net_process_received_packet(packet, ret); + if (ret) + eepro100_free_pkt_common(priv); + + return ret; +} + +int eepro100_initialize(struct bd_info *bis) +{ + struct eepro100_priv *priv; + struct eth_device *dev; + int card_number = 0; + u32 iobase, status; + pci_dev_t devno; + int idx = 0; + int ret; + + while (1) { + /* Find PCI device */ + devno = pci_find_devices(supported, idx++); + if (devno < 0) + break; + + pci_read_config_dword(devno, PCI_BASE_ADDRESS_0, &iobase); + iobase &= ~0xf; + + debug("eepro100: Intel i82559 PCI EtherExpressPro @0x%x\n", + iobase); + + pci_write_config_dword(devno, PCI_COMMAND, + PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); + + /* Check if I/O accesses and Bus Mastering are enabled. */ + pci_read_config_dword(devno, PCI_COMMAND, &status); + if (!(status & PCI_COMMAND_MEMORY)) { + printf("Error: Can not enable MEM access.\n"); + continue; + } + + if (!(status & PCI_COMMAND_MASTER)) { + printf("Error: Can not enable Bus Mastering.\n"); + continue; + } + + priv = calloc(1, sizeof(*priv)); + if (!priv) { + printf("eepro100: Can not allocate memory\n"); + break; + } + dev = &priv->dev; + + sprintf(dev->name, "i82559#%d", card_number); + priv->name = dev->name; + /* this have to come before bus_to_phys() */ + priv->devno = devno; + priv->iobase = (void __iomem *)bus_to_phys(devno, iobase); + priv->enetaddr = dev->enetaddr; + + dev->init = eepro100_init; + dev->halt = eepro100_halt; + dev->send = eepro100_send; + dev->recv = eepro100_recv; + + eth_register(dev); + + ret = eepro100_initialize_mii(priv); + if (ret) { + eth_unregister(dev); + free(priv); + return ret; + } + + card_number++; + + /* Set the latency timer for value. */ + pci_write_config_byte(devno, PCI_LATENCY_TIMER, 0x20); + + udelay(10 * 1000); + + eepro100_get_hwaddr(priv); + } + + return card_number; +} + +#else /* DM_ETH */ +static int eepro100_start(struct udevice *dev) +{ + struct eth_pdata *plat = dev_get_plat(dev); + struct eepro100_priv *priv = dev_get_priv(dev); + + memcpy(priv->enetaddr, plat->enetaddr, sizeof(plat->enetaddr)); + + return eepro100_init_common(priv); +} + +static void eepro100_stop(struct udevice *dev) +{ + struct eepro100_priv *priv = dev_get_priv(dev); + + eepro100_halt_common(priv); +} + +static int eepro100_send(struct udevice *dev, void *packet, int length) +{ + struct eepro100_priv *priv = dev_get_priv(dev); + int ret; + + ret = eepro100_send_common(priv, packet, length); + + return ret ? 0 : -ETIMEDOUT; +} + +static int eepro100_recv(struct udevice *dev, int flags, uchar **packetp) +{ + struct eepro100_priv *priv = dev_get_priv(dev); + + return eepro100_recv_common(priv, packetp); +} + +static int eepro100_free_pkt(struct udevice *dev, uchar *packet, int length) +{ + struct eepro100_priv *priv = dev_get_priv(dev); + + eepro100_free_pkt_common(priv); + + return 0; +} + +static int eepro100_read_rom_hwaddr(struct udevice *dev) +{ + struct eepro100_priv *priv = dev_get_priv(dev); + + eepro100_get_hwaddr(priv); + + return 0; +} + +static int eepro100_bind(struct udevice *dev) +{ + static int card_number; + char name[16]; + + sprintf(name, "eepro100#%u", card_number++); + + return device_set_name(dev, name); +} + +static int eepro100_probe(struct udevice *dev) +{ + struct eth_pdata *plat = dev_get_plat(dev); + struct eepro100_priv *priv = dev_get_priv(dev); + u16 command, status; + u32 iobase; + int ret; + + dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0, &iobase); + iobase &= ~0xf; + + debug("eepro100: Intel i82559 PCI EtherExpressPro @0x%x\n", iobase); + + priv->devno = dev; + priv->enetaddr = plat->enetaddr; + priv->iobase = (void __iomem *)bus_to_phys(dev, iobase); + + command = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER; + dm_pci_write_config16(dev, PCI_COMMAND, command); + dm_pci_read_config16(dev, PCI_COMMAND, &status); + if ((status & command) != command) { + printf("eepro100: Couldn't enable IO access or Bus Mastering\n"); + return -EINVAL; + } + + ret = eepro100_initialize_mii(priv); + if (ret) + return ret; + + dm_pci_write_config8(dev, PCI_LATENCY_TIMER, 0x20); + + return 0; +} + +static const struct eth_ops eepro100_ops = { + .start = eepro100_start, + .send = eepro100_send, + .recv = eepro100_recv, + .stop = eepro100_stop, + .free_pkt = eepro100_free_pkt, + .read_rom_hwaddr = eepro100_read_rom_hwaddr, +}; + +U_BOOT_DRIVER(eth_eepro100) = { + .name = "eth_eepro100", + .id = UCLASS_ETH, + .bind = eepro100_bind, + .probe = eepro100_probe, + .ops = &eepro100_ops, + .priv_auto = sizeof(struct eepro100_priv), + .plat_auto = sizeof(struct eth_pdata), +}; + +U_BOOT_PCI_DEVICE(eth_eepro100, supported); +#endif -- cgit 1.2.3-korg