diff options
Diffstat (limited to 'src/roms/SLOF/lib/libe1k/e1k.c')
| -rw-r--r-- | src/roms/SLOF/lib/libe1k/e1k.c | 1000 |
1 files changed, 1000 insertions, 0 deletions
diff --git a/src/roms/SLOF/lib/libe1k/e1k.c b/src/roms/SLOF/lib/libe1k/e1k.c new file mode 100644 index 0000000..4dd7d2e --- /dev/null +++ b/src/roms/SLOF/lib/libe1k/e1k.c @@ -0,0 +1,1000 @@ +/****************************************************************************** + * Copyright (c) 2007, 2011, 2013 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ +/* + * e1000 Gigabit Ethernet Driver for SLOF + * + * Reference: + * PCI/PCI-X Family of Gigabit Ethernet Controllers + * Software Developer's Manual Rev. 3.3, Intel, December 2006 + */ + +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <byteorder.h> +#include <helpers.h> +#include <netdriver.h> +#include "e1k.h" + +/* + * local defines + ****************************************************************************** + */ +#define E1K_NUM_RX_DESC 128 // do not change +#define E1K_NUM_TX_DESC 128 // do not change +#define E1K_BUF_SIZE 2096 // do not change + +#define NUM_MAC_ADDR 16 // number of mac address register pairs +#define EEPROM_MAC_OFFS 0 // position of mac address in eeprom + +/* + * local types + ****************************************************************************** + */ +typedef struct { + uint32_t m_dev_u32; + uint64_t m_devmsk_u64; + char *m_name; +} e1k_dev_t; + +/* + * e1k common data structures + */ + +/* + * transmit buffer descriptor + */ +typedef struct { + uint64_t m_buffer_u64; + uint16_t m_len_u16; + uint8_t m_cso_u08; + uint8_t m_cmd_u08; + uint8_t m_sta_u08; + uint8_t m_css_u08; + uint16_t m_spe_u16; +} __attribute__ ((packed)) e1k_tx_desc_st; + + +/* + * receive buffer descriptor + */ +typedef struct { + uint64_t m_buffer_u64; + uint16_t m_len_u16; + uint16_t m_csm_u16; + uint8_t m_sta_u08; + uint8_t m_err_u08; + uint16_t m_spe_u16; +} __attribute__ ((packed)) e1k_rx_desc_st; + +/* + * e1k device structure + */ +typedef struct { + /* + * device identification mask + */ + uint64_t m_device_u64; + + /* + * memory mapped base address of NIC + */ + uint64_t m_baseaddr_u64; + + /* + * transmit & receive rings + * must be 16 byte aligned + */ + e1k_tx_desc_st m_tx_ring_pst[E1K_NUM_TX_DESC]; + e1k_rx_desc_st m_rx_ring_pst[E1K_NUM_RX_DESC]; + + /* + * transmit & receive buffers + * must be 16 byte aligned + */ + uint8_t m_tx_buffer_pu08[E1K_NUM_TX_DESC][E1K_BUF_SIZE]; + uint8_t m_rx_buffer_pu08[E1K_NUM_RX_DESC][E1K_BUF_SIZE]; + + /* + * next receive descriptor index + */ + uint32_t m_rx_next_u32; + + /* + * command register storage + */ + uint16_t m_com_r_u16; + + /* + * padding to make the size of the structure a multiple of 16 byte + */ + uint16_t m_pad16_u16; + uint64_t m_pad64_u32; + +} __attribute__ ((packed)) e1k_st; + +/* + * local constants + ****************************************************************************** + */ +#define E1K_82540 ((uint64_t) 0x1) +#define E1K_82541 ((uint64_t) 0x2) +#define E1K_82544 ((uint64_t) 0x4) +#define E1K_82545 ((uint64_t) 0x8) +#define E1K_82546 ((uint64_t) 0x10) +#define E1K_82547 ((uint64_t) 0x20) + +#define IS_82541 ((m_e1k.m_device_u64 & E1K_82541) != 0) +#define IS_82546 ((m_e1k.m_device_u64 & E1K_82546) != 0) +#define IS_82547 ((m_e1k.m_device_u64 & E1K_82547) != 0) + +static const e1k_dev_t e1k_dev[] = { + { 0x1019, E1K_82547, "82547EI/GI Copper" }, + { 0x101A, E1K_82547, "82547EI Mobile" }, + { 0x1010, E1K_82546, "52546EB Copper, Dual Port" }, + { 0x1012, E1K_82546, "82546EB Fiber, Dual Port" }, +/* { 0x101D, E1K_82546, "82546EB Copper, Quad Port" }, */ + { 0x1079, E1K_82546, "82546GB Copper, Dual Port" }, + { 0x107A, E1K_82546, "82546GB Fiber, Dual Port" }, + { 0x107B, E1K_82546, "82546GB SerDes, Dual Port" }, + { 0x100F, E1K_82545, "82545EM Copper" }, + { 0x1011, E1K_82545, "82545EM Fiber" }, + { 0x1026, E1K_82545, "82545GM Copper" }, + { 0x1027, E1K_82545, "82545GM Fiber" }, + { 0x1028, E1K_82545, "82545GM SerDes" }, + { 0x1107, E1K_82544, "82544EI Copper" }, + { 0x1112, E1K_82544, "82544GC Copper" }, + { 0x1013, E1K_82541, "82541EI Copper" }, + { 0x1018, E1K_82541, "82541EI Mobile" }, + { 0x1076, E1K_82541, "82541GI Copper" }, + { 0x1077, E1K_82541, "82541GI Mobile" }, + { 0x1078, E1K_82541, "82541ER Copper" }, + { 0x107C, E1K_82541, "82541PI" }, + { 0x1015, E1K_82540, "82540EM Mobile" }, + { 0x1016, E1K_82540, "82540EP Mobile" }, + { 0x1017, E1K_82540, "82540EP Desktop" }, + { 0x100E, E1K_82540, "82540EM Desktop" }, + { 0 , 0 } +}; + +/* + * local variables + ****************************************************************************** + */ +static e1k_st m_e1k __attribute__ ((aligned(16))); +static long dma_offset; + +/* + * global functions + ****************************************************************************** + */ +int +check_driver(uint16_t vendor_id, uint16_t device_id); + +static int e1k_init(net_driver_t *driver); +static int e1k_term(void); +static int e1k_xmit(char *f_buffer_pc, int f_len_i); +static int e1k_receive(char *f_buffer_pc, int f_len_i); + +/** + * Translate virtual to "physical" address, ie. an address + * which can be used for DMA transfers. + */ +static uint64_t +virt2dma(void *addr) +{ + return (uint64_t)addr + dma_offset; +} + +static void * +dma2virt(uint64_t addr) +{ + return (void *)(addr - dma_offset); +} + +/* + * local inline functions for e1k register access + ****************************************************************************** + */ +static uint32_t +e1k_rd32(uint16_t f_offs_u16) +{ // caution: shall only be used after initialization! + return bswap_32(rd32(m_e1k.m_baseaddr_u64 + (uint64_t) f_offs_u16)); +} + +/* not used so far +static uint16_t +e1k_rd16(uint16_t f_offs_u16) +{ // caution: shall only be used after initialization! + return bswap_16(rd16(m_e1k.m_baseaddr_u64 + (uint64_t) f_offs_u16)); +}*/ + +/* not used so far +static uint8_t +e1k_rd08(uint16_t f_offs_u16) +{ // caution: shall only be used after initialization! + return rd08(m_e1k.m_baseaddr_u64 + (uint64_t) f_offs_u16); +}*/ + +static void +e1k_wr32(uint16_t f_offs_u16, uint32_t f_val_u32) +{ // caution: shall only be used after initialization! + wr32(m_e1k.m_baseaddr_u64 + (uint64_t) f_offs_u16, bswap_32(f_val_u32)); +} + +/* not used so far +static void +e1k_wr16(uint16_t f_offs_u16, uint16_t f_val_u16) +{ // caution: shall only be used after initialization! + wr16(m_e1k.m_baseaddr_u64 + (uint64_t) f_offs_u16, bswap_16(f_val_u16)); +}*/ + +/* not used so far +static void +e1k_wr08(uint16_t f_offs_u16, uint8_t f_val_u08) +{ // caution: shall only be used after initialization! + wr08(m_e1k.m_baseaddr_u64 + (uint64_t) f_offs_u16, f_val_u08); +}*/ + +static void +e1k_setb32(uint16_t f_offs_u16, uint32_t f_mask_u32) +{ + uint32_t v; + + v = e1k_rd32(f_offs_u16); + v |= f_mask_u32; + e1k_wr32(f_offs_u16, v); +} + +/* not used so far +static void +e1k_setb16(uint16_t f_offs_u16, uint16_t f_mask_u16) +{ + uint16_t v; + v = e1k_rd16(f_offs_u16); + v |= f_mask_u16; + e1k_wr16(f_offs_u16, v); +}*/ + +/* not used so far +static void +e1k_setb08(uint16_t f_offs_u16, uint8_t f_mask_u08) +{ + uint8_t v; + v = e1k_rd08(f_offs_u16); + v |= f_mask_u08; + e1k_wr08(f_offs_u16, v); +}*/ + +static void +e1k_clrb32(uint16_t f_offs_u16, uint32_t f_mask_u32) +{ + uint32_t v; + + v = e1k_rd32(f_offs_u16); + v &= ~f_mask_u32; + e1k_wr32(f_offs_u16, v); +} + +/* not used so far +static void +e1k_clrb16(uint16_t f_offs_u16, uint16_t f_mask_u16) +{ + uint16_t v; + + v = e1k_rd16(f_offs_u16); + v &= ~f_mask_u16; + e1k_wr16(f_offs_u16, v); +}*/ + +/* not used so far +static void +e1k_clrb08(uint16_t f_offs_u16, uint8_t f_mask_u08) +{ + uint8_t v; + v = e1k_rd08(f_offs_u16); + v &= ~f_mask_u08; + e1k_wr08(f_offs_u16, v); +}*/ + +static int32_t +e1k_eep_rd16(uint8_t f_offs_u08, uint16_t *f_data_pu16) +{ + uint32_t i; + uint32_t v; + int32_t done_shft; + int32_t addr_shft; + + if(IS_82541 || IS_82547) { + addr_shft = 2; + done_shft = 1; + } else { + addr_shft = 8; + done_shft = 4; + } + + /* + * initiate eeprom read + */ + e1k_wr32(EERD, ((uint32_t) f_offs_u08 << addr_shft) | // address + BIT32(0)); // start read + + /* + * wait for read done bit to be set + */ + i = 1000; + v = e1k_rd32(EERD); + while ((--i) && + ((v & BIT32(done_shft)) == 0)) { + SLOF_msleep(1); + v = e1k_rd32(EERD); + } + + /* + * return on error + */ + if ((v & BIT32(done_shft)) == 0) { + return -1; + } + + /* + * return data + */ + *f_data_pu16 = (uint16_t) ((v >> 16) & 0xffff); + + return 0; +} + +/* + * ring initialization + */ +static void +e1k_init_receiver(void) +{ + uint32_t i; + uint64_t addr; + + /* + * disable receiver for initialization + */ + e1k_wr32(RCTL, 0); + + /* + * clear receive desciptors and setup buffer pointers + */ + for (i = 0; i < E1K_NUM_RX_DESC; i++) { + memset((uint8_t *) &m_e1k.m_rx_ring_pst[i], 0, + sizeof(e1k_rx_desc_st)); + mb(); + + m_e1k.m_rx_ring_pst[i].m_buffer_u64 = + bswap_64(virt2dma(&m_e1k.m_rx_buffer_pu08[i][0])); + } + + /* + * initialize previously received index + */ + m_e1k.m_rx_next_u32 = 0; + + /* + * setup the base address and the length of the rx descriptor ring + */ + addr = virt2dma(&m_e1k.m_rx_ring_pst[0]); + e1k_wr32(RDBAH, (uint32_t) ((uint64_t) addr >> 32)); + e1k_wr32(RDBAL, (uint32_t) ((uint64_t) addr & 0xffffffff)); + e1k_wr32(RDLEN, E1K_NUM_RX_DESC * sizeof(e1k_rx_desc_st)); + + /* + * setup the rx head and tail descriptor indices + */ + e1k_wr32(RDH, 0); + e1k_wr32(RDT, E1K_NUM_RX_DESC - 1); + + /* + * setup the receive delay timer register + */ + e1k_wr32(RDTR, 0); + + /* + * setup the receive control register + */ + e1k_wr32(RCTL, BIT32( 1) | // enable receiver + BIT32( 4) | // enable multicast reception + BIT32(15)); // broadcast accept mode + // packet size 2048 + // no buffer extension +} + +static void +e1k_init_transmitter(void) +{ + uint32_t i; + uint64_t addr; + + /* + * clear transmit desciptors and setup buffer pointers + */ + for (i = 0; i < E1K_NUM_TX_DESC; i++) { + memset((uint8_t *) &m_e1k.m_tx_ring_pst[i], 0, + sizeof(e1k_tx_desc_st)); + mb(); + + m_e1k.m_tx_ring_pst[i].m_buffer_u64 = + bswap_64(virt2dma(&m_e1k.m_tx_buffer_pu08[i][0])); + } + + /* + * setup the base address and the length of the tx descriptor ring + */ + addr = virt2dma(&m_e1k.m_tx_ring_pst[0]); + e1k_wr32(TDBAH, (uint32_t) ((uint64_t) addr >> 32)); + e1k_wr32(TDBAL, (uint32_t) ((uint64_t) addr & 0xffffffff)); + e1k_wr32(TDLEN, E1K_NUM_TX_DESC * sizeof(e1k_tx_desc_st)); + + /* + * setup the rx head and tail descriptor indices + */ + e1k_wr32(TDH, 0); + e1k_wr32(TDT, 0); + + /* + * initialize the transmit control register + */ + e1k_wr32(TCTL, BIT32(1) | // enable transmitter + BIT32(3) | // pad short packets + ((uint32_t) 0x0f << 4) | // collision threshhold + ((uint32_t) 0x40 << 12)); // collision distance +} + +static int32_t +e1k_mac_init(uint8_t *f_mac_pu08) +{ + uint32_t l_ah_u32; + uint32_t l_al_u32; + uint32_t i; + uint32_t v; + + /* + * Use MAC address from device tree if possible + */ + for (i = 0, v = 0; i < 6; i++) { + v += (uint32_t) f_mac_pu08[i]; + } + + if (v != 0) { + /* + * use passed mac address for transmission to nic + */ + l_al_u32 = ((uint32_t) f_mac_pu08[3] << 24); + l_al_u32 |= ((uint32_t) f_mac_pu08[2] << 16); + l_al_u32 |= ((uint32_t) f_mac_pu08[1] << 8); + l_al_u32 |= ((uint32_t) f_mac_pu08[0] << 0); + l_ah_u32 = ((uint32_t) f_mac_pu08[5] << 8); + l_ah_u32 |= ((uint32_t) f_mac_pu08[4] << 0); + } else { + /* + * read mac address from eeprom + */ + uint16_t w[3]; // 3 16 bit words from eeprom + + for (i = 0; i < 3; i++) { + if (e1k_eep_rd16(EEPROM_MAC_OFFS + i, &w[i]) != 0) { + printf("Failed to read MAC address from EEPROM!\n"); + return -1; + } + } + + /* + * invert the least significant bit for 82546 dual port + * if the second device is in use (remember word is byteswapped) + */ + if ((IS_82546) && + ((e1k_rd32(STATUS) & BIT32(2)) != 0)) { + w[2] ^= (uint16_t) 0x100; + } + + /* + * store mac address for transmission to nic + */ + l_ah_u32 = ((uint32_t) w[2] << 0); + l_al_u32 = ((uint32_t) w[1] << 16); + l_al_u32 |= ((uint32_t) w[0] << 0); + + /* + * return mac address + * mac address in eeprom is stored byteswapped + */ + f_mac_pu08[1] = (uint8_t) ((w[0] >> 8) & 0xff); + f_mac_pu08[0] = (uint8_t) ((w[0] >> 0) & 0xff); + f_mac_pu08[3] = (uint8_t) ((w[1] >> 8) & 0xff); + f_mac_pu08[2] = (uint8_t) ((w[1] >> 0) & 0xff); + f_mac_pu08[5] = (uint8_t) ((w[2] >> 8) & 0xff); + f_mac_pu08[4] = (uint8_t) ((w[2] >> 0) & 0xff); + } + + /* + * insert mac address in receive address register + * and set AV bit + */ + e1k_wr32(RAL0, l_al_u32); + e1k_wr32(RAH0, l_ah_u32 | BIT32(31)); + + /* + * clear remaining receive address registers + */ + for (i = 1; i < NUM_MAC_ADDR; i++) { + e1k_wr32(RAL0 + i * sizeof(uint64_t), 0); + e1k_wr32(RAH0 + i * sizeof(uint64_t), 0); + } + + return 0; +} + + +/* + * interface + ****************************************************************************** + */ + +/* + * e1k_receive + */ +static int +e1k_receive(char *f_buffer_pc, int f_len_i) +{ + uint32_t l_rdh_u32 = e1k_rd32(RDH); // this includes needed dummy read + e1k_rx_desc_st *rx; + int l_ret_i; + + #ifdef E1K_DEBUG + #ifdef E1K_SHOW_RCV_DATA + int i; + #endif + #endif + + /* + * check whether new packets have arrived + */ + if (m_e1k.m_rx_next_u32 == l_rdh_u32) { + return 0; + } + + /* + * get a pointer to the next rx descriptor for ease of use + */ + rx = &m_e1k.m_rx_ring_pst[m_e1k.m_rx_next_u32]; + + /* + * check whether the descriptor done bit is set + */ + if ((rx->m_sta_u08 & 0x1) == 0) { + return 0; + } + + /* + * get the length of the packet, throw away checksum + */ + l_ret_i = (int) bswap_16(rx->m_len_u16) - (int) 4; + + /* + * copy the data + */ + memcpy((uint8_t *) f_buffer_pc, dma2virt(bswap_64(rx->m_buffer_u64)), + (size_t) l_ret_i); + + #ifdef E1K_DEBUG + #if defined(E1K_SHOW_RCV) || defined(E1K_SHOW_RCV_DATA) + printf("e1k: %d bytes received\n", l_ret_i); + #endif + + #ifdef E1K_SHOW_RCV_DATA + for (i = 0; i < l_ret_i; i++) { + + if ((i & 0x1f) == 0) { + printf("\n "); + } + + printf("%02X ", f_buffer_pc[i]); + } + + printf("\n\n"); + #endif + #endif + + /* + * clear descriptor for reusage, but leave buffer pointer untouched + */ + memset((uint8_t *) &rx->m_len_u16, 0, + sizeof(e1k_rx_desc_st) - sizeof(uint64_t)); + mb(); + + /* + * write new tail pointer + */ + e1k_wr32(RDT, m_e1k.m_rx_next_u32); + + /* + * update next receive index + */ + m_e1k.m_rx_next_u32 = (m_e1k.m_rx_next_u32 + 1) & (E1K_NUM_RX_DESC - 1); + + return l_ret_i; +} + +static int +e1k_xmit(char *f_buffer_pc, int f_len_i) +{ + uint32_t l_tdh_u32 = e1k_rd32(TDH); + uint32_t l_tdt_u32 = e1k_rd32(TDT); + uint32_t l_pre_u32 = (l_tdh_u32 + (E1K_NUM_TX_DESC - 1)) & + (E1K_NUM_TX_DESC - 1); + e1k_tx_desc_st *tx; + #if defined(E1K_DEBUG) && defined(E1K_SHOW_XMIT_DATA) + int i; + #endif + + /* + * check for available buffers + */ + if (l_pre_u32 == l_tdt_u32) { + return 0; + } + + /* + * get a pointer to the next tx descriptor for ease of use + */ + tx = &m_e1k.m_tx_ring_pst[l_tdt_u32]; + + /* + * copy the data + */ + memcpy(dma2virt(bswap_64(tx->m_buffer_u64)), (uint8_t *) f_buffer_pc, + (size_t) f_len_i); + + /* + * insert length & command flags + */ + tx->m_len_u16 = bswap_16((uint16_t) f_len_i); + tx->m_cmd_u08 = (BIT08(0) | // EOP + BIT08(1)); // IFCS + tx->m_sta_u08 = 0; + mb(); + + /* + * update tail index + */ + l_tdt_u32 = (l_tdt_u32 + 1) & (E1K_NUM_TX_DESC - 1); + e1k_wr32(TDT, l_tdt_u32); + + #ifdef E1K_DEBUG + #if defined(E1K_SHOW_XMIT) || defined(E1K_SHOW_XMIT_DATA) + printf("e1k: %d bytes transmitted\n", bswap_16(tx->m_len_u16)); + #endif + + #ifdef E1K_SHOW_XMIT_DATA + for (i = 0; i < bswap_16(tx->m_len_u16); i++) { + + if ((i & 0x1f) == 0) { + printf("\n "); + } + + f_buffer_pc = dma2virt(bswap_64(tx->m_buffer_u64)); + printf("%02X ", f_buffer_pc[i]); + } + + printf("\n\n"); + #endif + #endif + + return f_len_i; +} + +int +check_driver(uint16_t vendor_id, uint16_t device_id) +{ + uint64_t i; + + /* + * checks whether the driver is handling this device + * by verifying vendor & device id + * vendor id 0x8086 == Intel + */ + if (vendor_id != 0x8086) { + #ifdef E1K_DEBUG + printf("e1k: netdevice with vendor id %04X not supported\n", + vendor_id); + #endif + return -1; + } + + for (i = 0; e1k_dev[i].m_dev_u32 != 0; i++) { + if (e1k_dev[i].m_dev_u32 == (uint32_t) device_id) { + break; + } + } + + if (e1k_dev[i].m_dev_u32 == 0) { + #ifdef E1K_DEBUG + printf("e1k: netdevice with device id %04X not supported\n", + device_id); + #endif + return -1; + } + + /* + * initialize static variables + */ + m_e1k.m_device_u64 = e1k_dev[i].m_devmsk_u64; + m_e1k.m_baseaddr_u64 = 0; + + // success + #ifdef E1K_DEBUG + printf("e1k: found device %s\n", e1k_dev[i].m_name); + #endif + + return 0; +} + +static int +e1k_init(net_driver_t *driver) +{ + uint32_t i; + uint32_t v; + + if (!driver) + return -1; + + #ifdef E1K_DEBUG + printf("\ne1k: initializing\n"); + #endif + + dma_offset = SLOF_dma_map_in(&m_e1k, sizeof(m_e1k), 0); + #ifdef E1K_DEBUG + printf("e1k: dma offset: %lx - %lx = %lx\n", dma_offset, (long)&m_e1k, + dma_offset - (long)&m_e1k); + #endif + dma_offset = dma_offset - (long)&m_e1k; + + /* + * setup register & memory base addresses of NIC + */ + //m_e1k.m_baseaddr_u64 = baseaddr; + #ifdef E1K_DEBUG + printf("e1k: base address register = 0x%llx\n", m_e1k.m_baseaddr_u64); + #endif + + /* + * e1k hardware initialization + */ + + /* + * at first disable all interrupts + */ + e1k_wr32(IMC, (uint32_t) ~0); + + /* + * check for link up + */ + #ifdef E1K_DEBUG + printf("e1k: checking link status..\n"); + #endif + + i = 50; + v = e1k_rd32(STATUS); + while ((--i) && + ((v & BIT32(1)) == 0)) { + SLOF_msleep(100); + v = e1k_rd32(STATUS); + } + + if ((v & BIT32(1)) == 0) { + #ifdef E1K_DEBUG + printf("e1k: link is down.\n"); + printf(" terminating.\n"); + #endif + + return -1; + } + + #ifdef E1K_DEBUG + printf("e1k: link is up\n"); + + switch ((v >> 6) & 0x3) { + case 0: { + printf(" 10 Mb/s\n"); + } break; + case 1: { + printf(" 100 Mb/s\n"); + } break; + case 2: + case 3: { + printf(" 1000 Mb/s\n"); + } break; + } + + if ((v & BIT32(0)) == 0) { + printf(" half-duplex\n"); + } else { + printf(" full-duplex\n"); + } + #endif + + /* + * initialize mac address + */ + #ifdef E1K_DEBUG + printf("e1k: initializing mac address.. "); + #endif + if (e1k_mac_init((uint8_t *)driver->mac_addr) != 0) { + #ifdef E1K_DEBUG + printf("failed.\n"); + printf(" terminating.\n"); + #endif + + return -1; + } + + #ifdef E1K_DEBUG + printf("done.\n"); + printf(" mac address = %02X:%02X:%02X:%02X:%02X:%02X\n", + driver->mac_addr[0], driver->mac_addr[1], driver->mac_addr[2], + driver->mac_addr[3], driver->mac_addr[4], driver->mac_addr[5]); + #endif + + /* + * initialize transmitter + */ + #ifdef E1K_DEBUG + printf("e1k: initializing transmitter.. "); + #endif + e1k_init_transmitter(); + #ifdef E1K_DEBUG + printf("done.\n"); + #endif + + /* + * initialize receiver + */ + #ifdef E1K_DEBUG + printf("e1k: initializing receiver.. "); + #endif + e1k_init_receiver(); + #ifdef E1K_DEBUG + printf("done.\n"); + printf("e1k: initialization complete\n"); + #endif + + driver->running = 1; + + return 0; +} + +static int +e1k_reset(void) +{ + /* + * reset the PHY + */ + e1k_setb32(CTRL, BIT32(31)); + SLOF_msleep(10); + + /* + * reset the MAC + */ + e1k_setb32(CTRL, BIT32(26)); + SLOF_msleep(10); + + return 0; +} + +static int +e1k_term(void) +{ + #ifdef E1K_DEBUG + printf("e1k: shutdown.. "); + #endif + + /* + * disable receiver & transmitter + */ + e1k_wr32(RCTL, 0); + e1k_wr32(TCTL, 0); + SLOF_msleep(10); + + /* + * reset the ring indices + */ + e1k_wr32(RDH, 0); + e1k_wr32(RDT, 0); + e1k_wr32(TDH, 0); + e1k_wr32(TDT, 0); + + /* + * disable receive address + */ + e1k_clrb32(RAH0, BIT32(31)); + + /* + * reset the mac/phy + */ + e1k_reset(); + + /* + * Disable DMA translation + */ + SLOF_dma_map_out((long)virt2dma(&m_e1k), (void *)&m_e1k, (long)sizeof(m_e1k)); + + #ifdef E1K_DEBUG + printf("done.\n"); + #endif + + return 0; +} + +net_driver_t *e1k_open(uint64_t baseaddr) +{ + net_driver_t *driver; + + m_e1k.m_baseaddr_u64 = baseaddr; + driver = SLOF_alloc_mem(sizeof(*driver)); + if (!driver) { + printf("Unable to allocate virtio-net driver\n"); + return NULL; + } + memset(driver, 0, sizeof(*driver)); + + if (e1k_init(driver)) + goto FAIL; + + return driver; + +FAIL: SLOF_free_mem(driver, sizeof(*driver)); + return NULL; + + return 0; +} + +void e1k_close(net_driver_t *driver) +{ + if (driver->running == 0) + return; + + e1k_term(); + driver->running = 0; + SLOF_free_mem(driver, sizeof(*driver)); +} + +int e1k_read(char *buf, int len) +{ + if (buf) + return e1k_receive(buf, len); + return -1; +} + +int e1k_write(char *buf, int len) +{ + if (buf) + return e1k_xmit(buf, len); + return -1; +} + +int e1k_mac_setup(uint16_t vendor_id, uint16_t device_id, + uint64_t baseaddr, char *mac_addr) +{ + if (check_driver(vendor_id, device_id)) + return -1; + + m_e1k.m_baseaddr_u64 = baseaddr; + memset(mac_addr, 0, 6); + + return e1k_mac_init((uint8_t *)mac_addr); +} |
