1 /* Advanced Micro Devices Inc. AMD8111E Linux Network Driver
2 * Copyright (C) 2004 Advanced Micro Devices
3 * Copyright (C) 2005 Liu Tao <liutao1980@gmail.com> [etherboot port]
5 * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ]
6 * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c]
7 * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ]
8 * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
9 * Copyright 1993 United States Government as represented by the
10 * Director, National Security Agency.[ pcnet32.c ]
11 * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ]
12 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include "etherboot.h"
41 /* driver definitions */
42 #define NUM_TX_SLOTS 2
43 #define NUM_RX_SLOTS 4
44 #define TX_SLOTS_MASK 1
45 #define RX_SLOTS_MASK 3
47 #define TX_BUF_LEN 1536
48 #define RX_BUF_LEN 1536
50 #define TX_PKT_LEN_MAX (ETH_FRAME_LEN - ETH_HLEN)
51 #define RX_PKT_LEN_MIN 60
52 #define RX_PKT_LEN_MAX ETH_FRAME_LEN
54 #define TX_TIMEOUT 3000
55 #define TX_PROCESS_TIME 10
56 #define TX_RETRY (TX_TIMEOUT / TX_PROCESS_TIME)
58 #define PHY_RW_RETRY 10
61 struct amd8111e_tx_desc {
70 struct amd8111e_rx_desc {
80 u8 dst_addr[ETH_ALEN];
81 u8 src_addr[ETH_ALEN];
83 u8 data[ETH_FRAME_LEN - ETH_HLEN];
84 } __attribute__((packed));
86 struct amd8111e_priv {
87 struct amd8111e_tx_desc tx_ring[NUM_TX_SLOTS];
88 struct amd8111e_rx_desc rx_ring[NUM_RX_SLOTS];
89 unsigned char tx_buf[NUM_TX_SLOTS][TX_BUF_LEN];
90 unsigned char rx_buf[NUM_RX_SLOTS][RX_BUF_LEN];
91 unsigned long tx_idx, rx_idx;
101 struct pci_device *pdev;
106 static struct amd8111e_priv amd8111e;
109 /********************************************************
111 ********************************************************/
112 static void amd8111e_init_hw_default(struct amd8111e_priv *lp);
113 static int amd8111e_start(struct amd8111e_priv *lp);
114 static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val);
116 static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val);
118 static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp);
119 static void amd8111e_disable_interrupt(struct amd8111e_priv *lp);
120 static void amd8111e_enable_interrupt(struct amd8111e_priv *lp);
121 static void amd8111e_force_interrupt(struct amd8111e_priv *lp);
122 static int amd8111e_get_mac_address(struct amd8111e_priv *lp);
123 static int amd8111e_init_rx_ring(struct amd8111e_priv *lp);
124 static int amd8111e_init_tx_ring(struct amd8111e_priv *lp);
125 static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index);
126 static void amd8111e_wait_link(struct amd8111e_priv *lp);
127 static void amd8111e_poll_link(struct amd8111e_priv *lp);
128 static void amd8111e_restart(struct amd8111e_priv *lp);
132 * This function clears necessary the device registers.
134 static void amd8111e_init_hw_default(struct amd8111e_priv *lp)
136 unsigned int reg_val;
137 unsigned int logic_filter[2] = {0,};
138 void *mmio = lp->mmio;
141 writel(RUN, mmio + CMD0);
143 /* Clear RCV_RING_BASE_ADDR */
144 writel(0, mmio + RCV_RING_BASE_ADDR0);
146 /* Clear XMT_RING_BASE_ADDR */
147 writel(0, mmio + XMT_RING_BASE_ADDR0);
148 writel(0, mmio + XMT_RING_BASE_ADDR1);
149 writel(0, mmio + XMT_RING_BASE_ADDR2);
150 writel(0, mmio + XMT_RING_BASE_ADDR3);
153 writel(CMD0_CLEAR, mmio + CMD0);
156 writel(CMD2_CLEAR, mmio + CMD2);
159 writel(CMD7_CLEAR, mmio + CMD7);
161 /* Clear DLY_INT_A and DLY_INT_B */
162 writel(0x0, mmio + DLY_INT_A);
163 writel(0x0, mmio + DLY_INT_B);
165 /* Clear FLOW_CONTROL */
166 writel(0x0, mmio + FLOW_CONTROL);
168 /* Clear INT0 write 1 to clear register */
169 reg_val = readl(mmio + INT0);
170 writel(reg_val, mmio + INT0);
173 writel(0x0, mmio + STVAL);
176 writel(INTEN0_CLEAR, mmio + INTEN0);
179 writel(0x0, mmio + LADRF);
181 /* Set SRAM_SIZE & SRAM_BOUNDARY registers */
182 writel(0x80010, mmio + SRAM_SIZE);
184 /* Clear RCV_RING0_LEN */
185 writel(0x0, mmio + RCV_RING_LEN0);
187 /* Clear XMT_RING0/1/2/3_LEN */
188 writel(0x0, mmio + XMT_RING_LEN0);
189 writel(0x0, mmio + XMT_RING_LEN1);
190 writel(0x0, mmio + XMT_RING_LEN2);
191 writel(0x0, mmio + XMT_RING_LEN3);
193 /* Clear XMT_RING_LIMIT */
194 writel(0x0, mmio + XMT_RING_LIMIT);
197 writew(MIB_CLEAR, mmio + MIB_ADDR);
200 amd8111e_writeq(*(u64*)logic_filter, mmio + LADRF);
202 /* SRAM_SIZE register */
203 reg_val = readl(mmio + SRAM_SIZE);
205 /* Set default value to CTRL1 Register */
206 writel(CTRL1_DEFAULT, mmio + CTRL1);
208 /* To avoid PCI posting bug */
213 * This function initializes the device registers and starts the device.
215 static int amd8111e_start(struct amd8111e_priv *lp)
217 struct nic *nic = lp->nic;
218 void *mmio = lp->mmio;
222 writel(RUN, mmio + CMD0);
224 /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
225 writew(0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
227 /* enable the port manager and set auto negotiation always */
228 writel(VAL1 | EN_PMGR, mmio + CMD3 );
229 writel(XPHYANE | XPHYRST, mmio + CTRL2);
231 /* set control registers */
232 reg_val = readl(mmio + CTRL1);
233 reg_val &= ~XMTSP_MASK;
234 writel(reg_val | XMTSP_128 | CACHE_ALIGN, mmio + CTRL1);
236 /* initialize tx and rx ring base addresses */
237 amd8111e_init_tx_ring(lp);
238 amd8111e_init_rx_ring(lp);
239 writel(virt_to_bus(lp->tx_ring), mmio + XMT_RING_BASE_ADDR0);
240 writel(virt_to_bus(lp->rx_ring), mmio + RCV_RING_BASE_ADDR0);
241 writew(NUM_TX_SLOTS, mmio + XMT_RING_LEN0);
242 writew(NUM_RX_SLOTS, mmio + RCV_RING_LEN0);
244 /* set default IPG to 96 */
245 writew(DEFAULT_IPG, mmio + IPG);
246 writew(DEFAULT_IPG - IFS1_DELTA, mmio + IFS1);
248 /* AutoPAD transmit, Retransmit on Underflow */
249 writel(VAL0 | APAD_XMT | REX_RTRY | REX_UFLO, mmio + CMD2);
252 writel(JUMBO, mmio + CMD3);
254 /* Setting the MAC address to the device */
255 for(i = 0; i < ETH_ALEN; i++)
256 writeb(nic->node_addr[i], mmio + PADR + i);
258 /* set RUN bit to start the chip, interrupt not enabled */
259 writel(VAL2 | RDMD0 | VAL0 | RUN, mmio + CMD0);
261 /* To avoid PCI posting bug */
267 This function will read the PHY registers.
269 static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val)
271 void *mmio = lp->mmio;
272 unsigned int reg_val;
273 unsigned int retry = PHY_RW_RETRY;
275 reg_val = readl(mmio + PHY_ACCESS);
276 while (reg_val & PHY_CMD_ACTIVE)
277 reg_val = readl(mmio + PHY_ACCESS);
279 writel(PHY_RD_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16),
282 reg_val = readl(mmio + PHY_ACCESS);
283 udelay(30); /* It takes 30 us to read/write data */
284 } while (--retry && (reg_val & PHY_CMD_ACTIVE));
286 if (reg_val & PHY_RD_ERR) {
291 *val = reg_val & 0xffff;
296 This function will write into PHY registers.
299 static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val)
301 void *mmio = lp->mmio;
302 unsigned int reg_val;
303 unsigned int retry = PHY_RW_RETRY;
305 reg_val = readl(mmio + PHY_ACCESS);
306 while (reg_val & PHY_CMD_ACTIVE)
307 reg_val = readl(mmio + PHY_ACCESS);
309 writel(PHY_WR_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16) | val,
312 reg_val = readl(mmio + PHY_ACCESS);
313 udelay(30); /* It takes 30 us to read/write the data */
314 } while (--retry && (reg_val & PHY_CMD_ACTIVE));
316 if(reg_val & PHY_RD_ERR)
323 static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp)
328 lp->ext_phy_addr = 1;
330 for (i = 0x1e; i >= 0; i--) {
333 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
335 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
337 lp->ext_phy_id = (id1 << 16) | id2;
338 lp->ext_phy_addr = i;
343 printf("Found MII PHY ID 0x%08x at address 0x%02x\n",
344 lp->ext_phy_id, lp->ext_phy_addr);
346 printf("Couldn't detect MII PHY, assuming address 0x01\n");
349 static void amd8111e_disable_interrupt(struct amd8111e_priv *lp)
351 void *mmio = lp->mmio;
354 writel(INTREN, mmio + CMD0);
355 writel(INTEN0_CLEAR, mmio + INTEN0);
356 int0 = readl(mmio + INT0);
357 writel(int0, mmio + INT0);
361 static void amd8111e_enable_interrupt(struct amd8111e_priv *lp)
363 void *mmio = lp->mmio;
365 writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
366 writel(VAL0 | INTREN, mmio + CMD0);
370 static void amd8111e_force_interrupt(struct amd8111e_priv *lp)
372 void *mmio = lp->mmio;
374 writel(VAL0 | UINTCMD, mmio + CMD0);
378 static int amd8111e_get_mac_address(struct amd8111e_priv *lp)
380 struct nic *nic = lp->nic;
381 void *mmio = lp->mmio;
384 /* BIOS should have set mac address to PADR register,
385 * so we read PADR to get it.
387 for (i = 0; i < ETH_ALEN; i++)
388 nic->node_addr[i] = readb(mmio + PADR + i);
389 printf("Ethernet addr: %!\n", nic->node_addr);
394 static int amd8111e_init_rx_ring(struct amd8111e_priv *lp)
400 /* Initilaizing receive descriptors */
401 for (i = 0; i < NUM_RX_SLOTS; i++) {
402 lp->rx_ring[i].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[i]));
403 lp->rx_ring[i].buf_len = cpu_to_le16(RX_BUF_LEN);
405 lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
411 static int amd8111e_init_tx_ring(struct amd8111e_priv *lp)
416 lp->tx_consistent = 1;
418 /* Initializing transmit descriptors */
419 for (i = 0; i < NUM_TX_SLOTS; i++) {
420 lp->tx_ring[i].tx_flags = 0;
421 lp->tx_ring[i].buf_phy_addr = 0;
422 lp->tx_ring[i].buf_len = 0;
428 static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index)
431 int retry = TX_RETRY;
433 status = le16_to_cpu(lp->tx_ring[index].tx_flags);
434 while (--retry && (status & OWN_BIT)) {
435 mdelay(TX_PROCESS_TIME);
436 status = le16_to_cpu(lp->tx_ring[index].tx_flags);
438 if (status & OWN_BIT) {
439 printf("Error: tx slot %d timeout, stat = 0x%x\n", index, status);
440 amd8111e_restart(lp);
447 static void amd8111e_wait_link(struct amd8111e_priv *lp)
453 /* read phy to update STAT0 register */
454 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val);
455 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val);
456 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val);
457 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val);
458 status = readl(lp->mmio + STAT0);
459 } while (!(status & AUTONEG_COMPLETE) || !(status & LINK_STATS));
462 static void amd8111e_poll_link(struct amd8111e_priv *lp)
464 unsigned int status, speed;
468 /* read phy to update STAT0 register */
469 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val);
470 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val);
471 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val);
472 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val);
473 status = readl(lp->mmio + STAT0);
475 if (status & LINK_STATS) {
477 speed = (status & SPEED_MASK) >> 7;
478 if (speed == PHY_SPEED_100)
482 if (status & FULL_DPLX)
487 printf("Link is up: %s Mbps %s duplex\n",
488 lp->speed ? "100" : "10", lp->duplex ? "full" : "half");
491 status = readl(lp->mmio + STAT0);
492 if (!(status & LINK_STATS)) {
494 printf("Link is down\n");
499 static void amd8111e_restart(struct amd8111e_priv *lp)
501 printf("\nStarting nic...\n");
502 amd8111e_disable_interrupt(lp);
503 amd8111e_init_hw_default(lp);
504 amd8111e_probe_ext_phy(lp);
505 amd8111e_get_mac_address(lp);
508 printf("Waiting link up...\n");
510 amd8111e_wait_link(lp);
511 amd8111e_poll_link(lp);
515 /********************************************************
516 * Interface Functions *
517 ********************************************************/
519 static void amd8111e_transmit(struct nic *nic, const char *dst_addr,
520 unsigned int type, unsigned int size, const char *packet)
522 struct amd8111e_priv *lp = nic->priv_data;
523 struct eth_frame *frame;
526 /* check packet size */
527 if (size > TX_PKT_LEN_MAX) {
528 printf("amd8111e_transmit(): too large packet, drop\n");
534 if (amd8111e_wait_tx_ring(lp, index))
538 frame = (struct eth_frame *)lp->tx_buf[index];
539 memset(frame->data, 0, TX_PKT_LEN_MAX);
540 memcpy(frame->dst_addr, dst_addr, ETH_ALEN);
541 memcpy(frame->src_addr, nic->node_addr, ETH_ALEN);
542 frame->type = htons(type);
543 memcpy(frame->data, packet, size);
546 lp->tx_ring[index].buf_len = cpu_to_le16(ETH_HLEN + size);
547 lp->tx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(frame));
549 lp->tx_ring[index].tx_flags =
550 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT | ADD_FCS_BIT | LTINT_BIT);
551 writel(VAL1 | TDMD0, lp->mmio + CMD0);
552 readl(lp->mmio + CMD0);
554 /* update slot pointer */
555 lp->tx_idx = (lp->tx_idx + 1) & TX_SLOTS_MASK;
558 static int amd8111e_poll(struct nic *nic, int retrieve)
560 /* return true if there's an ethernet packet ready to read */
561 /* nic->packet should contain data on return */
562 /* nic->packetlen should contain length of data */
564 struct amd8111e_priv *lp = nic->priv_data;
566 unsigned int index, pkt_ok;
568 amd8111e_poll_link(lp);
571 status = le16_to_cpu(lp->rx_ring[index].rx_flags);
572 pkt_len = le16_to_cpu(lp->rx_ring[index].msg_len) - 4; /* remove 4bytes FCS */
574 if (status & OWN_BIT)
577 if (status & ERR_BIT)
579 else if (!(status & STP_BIT))
581 else if (!(status & ENP_BIT))
583 else if (pkt_len < RX_PKT_LEN_MIN)
585 else if (pkt_len > RX_PKT_LEN_MAX)
593 nic->packetlen = pkt_len;
594 memcpy(nic->packet, lp->rx_buf[index], nic->packetlen);
597 lp->rx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[index]));
598 lp->rx_ring[index].buf_len = cpu_to_le16(RX_BUF_LEN);
600 lp->rx_ring[index].rx_flags = cpu_to_le16(OWN_BIT);
601 writel(VAL2 | RDMD0, lp->mmio + CMD0);
602 readl(lp->mmio + CMD0);
604 lp->rx_idx = (lp->rx_idx + 1) & RX_SLOTS_MASK;
608 static void amd8111e_disable(struct nic *nic)
610 struct amd8111e_priv *lp = nic->priv_data;
612 /* disable interrupt */
613 amd8111e_disable_interrupt(lp);
616 amd8111e_init_hw_default(lp);
625 static void amd8111e_irq(struct nic *nic, irq_action_t action)
627 struct amd8111e_priv *lp = nic->priv_data;
631 amd8111e_disable_interrupt(lp);
634 amd8111e_enable_interrupt(lp);
637 amd8111e_force_interrupt(lp);
642 static struct nic_operations amd8111e_operations = {
643 .connect = dummy_connect,
644 .poll = amd8111e_poll,
645 .transmit = amd8111e_transmit,
649 static int amd8111e_probe(struct nic *nic, struct pci_device *pdev)
651 struct amd8111e_priv *lp = &amd8111e;
652 unsigned long mmio_start, mmio_len;
654 pci_fill_nic ( nic, pdev );
656 mmio_start = pci_bar_start(pdev, PCI_BASE_ADDRESS_0);
657 mmio_len = pci_bar_size(pdev, PCI_BASE_ADDRESS_0);
659 memset(lp, 0, sizeof(*lp));
662 lp->mmio = ioremap(mmio_start, mmio_len);
664 adjust_pci_device(pdev);
668 amd8111e_restart(lp);
670 nic->nic_op = &amd8111e_operations;
674 static struct pci_id amd8111e_nics[] = {
675 PCI_ROM(0x1022, 0x7462, "amd8111e", "AMD8111E"),
678 PCI_DRIVER ( amd8111e_driver, amd8111e_nics, PCI_NO_CLASS );
680 DRIVER ( "AMD8111E", nic_driver, pci_driver, amd8111e_driver,
681 amd8111e_probe, amd8111e_disable );