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"
35 #include <gpxe/ethernet.h>
42 /* driver definitions */
43 #define NUM_TX_SLOTS 2
44 #define NUM_RX_SLOTS 4
45 #define TX_SLOTS_MASK 1
46 #define RX_SLOTS_MASK 3
48 #define TX_BUF_LEN 1536
49 #define RX_BUF_LEN 1536
51 #define TX_PKT_LEN_MAX (ETH_FRAME_LEN - ETH_HLEN)
52 #define RX_PKT_LEN_MIN 60
53 #define RX_PKT_LEN_MAX ETH_FRAME_LEN
55 #define TX_TIMEOUT 3000
56 #define TX_PROCESS_TIME 10
57 #define TX_RETRY (TX_TIMEOUT / TX_PROCESS_TIME)
59 #define PHY_RW_RETRY 10
62 struct amd8111e_tx_desc {
71 struct amd8111e_rx_desc {
81 u8 dst_addr[ETH_ALEN];
82 u8 src_addr[ETH_ALEN];
84 u8 data[ETH_FRAME_LEN - ETH_HLEN];
85 } __attribute__((packed));
87 struct amd8111e_priv {
88 struct amd8111e_tx_desc tx_ring[NUM_TX_SLOTS];
89 struct amd8111e_rx_desc rx_ring[NUM_RX_SLOTS];
90 unsigned char tx_buf[NUM_TX_SLOTS][TX_BUF_LEN];
91 unsigned char rx_buf[NUM_RX_SLOTS][RX_BUF_LEN];
92 unsigned long tx_idx, rx_idx;
102 struct pci_device *pdev;
107 static struct amd8111e_priv amd8111e;
110 /********************************************************
112 ********************************************************/
113 static void amd8111e_init_hw_default(struct amd8111e_priv *lp);
114 static int amd8111e_start(struct amd8111e_priv *lp);
115 static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val);
117 static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val);
119 static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp);
120 static void amd8111e_disable_interrupt(struct amd8111e_priv *lp);
121 static void amd8111e_enable_interrupt(struct amd8111e_priv *lp);
122 static void amd8111e_force_interrupt(struct amd8111e_priv *lp);
123 static int amd8111e_get_mac_address(struct amd8111e_priv *lp);
124 static int amd8111e_init_rx_ring(struct amd8111e_priv *lp);
125 static int amd8111e_init_tx_ring(struct amd8111e_priv *lp);
126 static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index);
127 static void amd8111e_wait_link(struct amd8111e_priv *lp);
128 static void amd8111e_poll_link(struct amd8111e_priv *lp);
129 static void amd8111e_restart(struct amd8111e_priv *lp);
133 * This function clears necessary the device registers.
135 static void amd8111e_init_hw_default(struct amd8111e_priv *lp)
137 unsigned int reg_val;
138 unsigned int logic_filter[2] = {0,};
139 void *mmio = lp->mmio;
142 writel(RUN, mmio + CMD0);
144 /* Clear RCV_RING_BASE_ADDR */
145 writel(0, mmio + RCV_RING_BASE_ADDR0);
147 /* Clear XMT_RING_BASE_ADDR */
148 writel(0, mmio + XMT_RING_BASE_ADDR0);
149 writel(0, mmio + XMT_RING_BASE_ADDR1);
150 writel(0, mmio + XMT_RING_BASE_ADDR2);
151 writel(0, mmio + XMT_RING_BASE_ADDR3);
154 writel(CMD0_CLEAR, mmio + CMD0);
157 writel(CMD2_CLEAR, mmio + CMD2);
160 writel(CMD7_CLEAR, mmio + CMD7);
162 /* Clear DLY_INT_A and DLY_INT_B */
163 writel(0x0, mmio + DLY_INT_A);
164 writel(0x0, mmio + DLY_INT_B);
166 /* Clear FLOW_CONTROL */
167 writel(0x0, mmio + FLOW_CONTROL);
169 /* Clear INT0 write 1 to clear register */
170 reg_val = readl(mmio + INT0);
171 writel(reg_val, mmio + INT0);
174 writel(0x0, mmio + STVAL);
177 writel(INTEN0_CLEAR, mmio + INTEN0);
180 writel(0x0, mmio + LADRF);
182 /* Set SRAM_SIZE & SRAM_BOUNDARY registers */
183 writel(0x80010, mmio + SRAM_SIZE);
185 /* Clear RCV_RING0_LEN */
186 writel(0x0, mmio + RCV_RING_LEN0);
188 /* Clear XMT_RING0/1/2/3_LEN */
189 writel(0x0, mmio + XMT_RING_LEN0);
190 writel(0x0, mmio + XMT_RING_LEN1);
191 writel(0x0, mmio + XMT_RING_LEN2);
192 writel(0x0, mmio + XMT_RING_LEN3);
194 /* Clear XMT_RING_LIMIT */
195 writel(0x0, mmio + XMT_RING_LIMIT);
198 writew(MIB_CLEAR, mmio + MIB_ADDR);
201 amd8111e_writeq(*(u64*)logic_filter, mmio + LADRF);
203 /* SRAM_SIZE register */
204 reg_val = readl(mmio + SRAM_SIZE);
206 /* Set default value to CTRL1 Register */
207 writel(CTRL1_DEFAULT, mmio + CTRL1);
209 /* To avoid PCI posting bug */
214 * This function initializes the device registers and starts the device.
216 static int amd8111e_start(struct amd8111e_priv *lp)
218 struct nic *nic = lp->nic;
219 void *mmio = lp->mmio;
223 writel(RUN, mmio + CMD0);
225 /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
226 writew(0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
228 /* enable the port manager and set auto negotiation always */
229 writel(VAL1 | EN_PMGR, mmio + CMD3 );
230 writel(XPHYANE | XPHYRST, mmio + CTRL2);
232 /* set control registers */
233 reg_val = readl(mmio + CTRL1);
234 reg_val &= ~XMTSP_MASK;
235 writel(reg_val | XMTSP_128 | CACHE_ALIGN, mmio + CTRL1);
237 /* initialize tx and rx ring base addresses */
238 amd8111e_init_tx_ring(lp);
239 amd8111e_init_rx_ring(lp);
240 writel(virt_to_bus(lp->tx_ring), mmio + XMT_RING_BASE_ADDR0);
241 writel(virt_to_bus(lp->rx_ring), mmio + RCV_RING_BASE_ADDR0);
242 writew(NUM_TX_SLOTS, mmio + XMT_RING_LEN0);
243 writew(NUM_RX_SLOTS, mmio + RCV_RING_LEN0);
245 /* set default IPG to 96 */
246 writew(DEFAULT_IPG, mmio + IPG);
247 writew(DEFAULT_IPG - IFS1_DELTA, mmio + IFS1);
249 /* AutoPAD transmit, Retransmit on Underflow */
250 writel(VAL0 | APAD_XMT | REX_RTRY | REX_UFLO, mmio + CMD2);
253 writel(JUMBO, mmio + CMD3);
255 /* Setting the MAC address to the device */
256 for(i = 0; i < ETH_ALEN; i++)
257 writeb(nic->node_addr[i], mmio + PADR + i);
259 /* set RUN bit to start the chip, interrupt not enabled */
260 writel(VAL2 | RDMD0 | VAL0 | RUN, mmio + CMD0);
262 /* To avoid PCI posting bug */
268 This function will read the PHY registers.
270 static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val)
272 void *mmio = lp->mmio;
273 unsigned int reg_val;
274 unsigned int retry = PHY_RW_RETRY;
276 reg_val = readl(mmio + PHY_ACCESS);
277 while (reg_val & PHY_CMD_ACTIVE)
278 reg_val = readl(mmio + PHY_ACCESS);
280 writel(PHY_RD_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16),
283 reg_val = readl(mmio + PHY_ACCESS);
284 udelay(30); /* It takes 30 us to read/write data */
285 } while (--retry && (reg_val & PHY_CMD_ACTIVE));
287 if (reg_val & PHY_RD_ERR) {
292 *val = reg_val & 0xffff;
297 This function will write into PHY registers.
300 static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val)
302 void *mmio = lp->mmio;
303 unsigned int reg_val;
304 unsigned int retry = PHY_RW_RETRY;
306 reg_val = readl(mmio + PHY_ACCESS);
307 while (reg_val & PHY_CMD_ACTIVE)
308 reg_val = readl(mmio + PHY_ACCESS);
310 writel(PHY_WR_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16) | val,
313 reg_val = readl(mmio + PHY_ACCESS);
314 udelay(30); /* It takes 30 us to read/write the data */
315 } while (--retry && (reg_val & PHY_CMD_ACTIVE));
317 if(reg_val & PHY_RD_ERR)
324 static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp)
329 lp->ext_phy_addr = 1;
331 for (i = 0x1e; i >= 0; i--) {
334 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
336 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
338 lp->ext_phy_id = (id1 << 16) | id2;
339 lp->ext_phy_addr = i;
344 printf("Found MII PHY ID 0x%08x at address 0x%02x\n",
345 lp->ext_phy_id, lp->ext_phy_addr);
347 printf("Couldn't detect MII PHY, assuming address 0x01\n");
350 static void amd8111e_disable_interrupt(struct amd8111e_priv *lp)
352 void *mmio = lp->mmio;
355 writel(INTREN, mmio + CMD0);
356 writel(INTEN0_CLEAR, mmio + INTEN0);
357 int0 = readl(mmio + INT0);
358 writel(int0, mmio + INT0);
362 static void amd8111e_enable_interrupt(struct amd8111e_priv *lp)
364 void *mmio = lp->mmio;
366 writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
367 writel(VAL0 | INTREN, mmio + CMD0);
371 static void amd8111e_force_interrupt(struct amd8111e_priv *lp)
373 void *mmio = lp->mmio;
375 writel(VAL0 | UINTCMD, mmio + CMD0);
379 static int amd8111e_get_mac_address(struct amd8111e_priv *lp)
381 struct nic *nic = lp->nic;
382 void *mmio = lp->mmio;
385 /* BIOS should have set mac address to PADR register,
386 * so we read PADR to get it.
388 for (i = 0; i < ETH_ALEN; i++)
389 nic->node_addr[i] = readb(mmio + PADR + i);
391 DBG ( "Ethernet addr: %s\n", eth_ntoa ( nic->node_addr ) );
396 static int amd8111e_init_rx_ring(struct amd8111e_priv *lp)
402 /* Initilaizing receive descriptors */
403 for (i = 0; i < NUM_RX_SLOTS; i++) {
404 lp->rx_ring[i].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[i]));
405 lp->rx_ring[i].buf_len = cpu_to_le16(RX_BUF_LEN);
407 lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
413 static int amd8111e_init_tx_ring(struct amd8111e_priv *lp)
418 lp->tx_consistent = 1;
420 /* Initializing transmit descriptors */
421 for (i = 0; i < NUM_TX_SLOTS; i++) {
422 lp->tx_ring[i].tx_flags = 0;
423 lp->tx_ring[i].buf_phy_addr = 0;
424 lp->tx_ring[i].buf_len = 0;
430 static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index)
433 int retry = TX_RETRY;
435 status = le16_to_cpu(lp->tx_ring[index].tx_flags);
436 while (--retry && (status & OWN_BIT)) {
437 mdelay(TX_PROCESS_TIME);
438 status = le16_to_cpu(lp->tx_ring[index].tx_flags);
440 if (status & OWN_BIT) {
441 printf("Error: tx slot %d timeout, stat = 0x%x\n", index, status);
442 amd8111e_restart(lp);
449 static void amd8111e_wait_link(struct amd8111e_priv *lp)
455 /* read phy to update STAT0 register */
456 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val);
457 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val);
458 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val);
459 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val);
460 status = readl(lp->mmio + STAT0);
461 } while (!(status & AUTONEG_COMPLETE) || !(status & LINK_STATS));
464 static void amd8111e_poll_link(struct amd8111e_priv *lp)
466 unsigned int status, speed;
470 /* read phy to update STAT0 register */
471 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val);
472 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val);
473 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val);
474 amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val);
475 status = readl(lp->mmio + STAT0);
477 if (status & LINK_STATS) {
479 speed = (status & SPEED_MASK) >> 7;
480 if (speed == PHY_SPEED_100)
484 if (status & FULL_DPLX)
489 printf("Link is up: %s Mbps %s duplex\n",
490 lp->speed ? "100" : "10", lp->duplex ? "full" : "half");
493 status = readl(lp->mmio + STAT0);
494 if (!(status & LINK_STATS)) {
496 printf("Link is down\n");
501 static void amd8111e_restart(struct amd8111e_priv *lp)
503 printf("\nStarting nic...\n");
504 amd8111e_disable_interrupt(lp);
505 amd8111e_init_hw_default(lp);
506 amd8111e_probe_ext_phy(lp);
507 amd8111e_get_mac_address(lp);
510 printf("Waiting link up...\n");
512 amd8111e_wait_link(lp);
513 amd8111e_poll_link(lp);
517 /********************************************************
518 * Interface Functions *
519 ********************************************************/
521 static void amd8111e_transmit(struct nic *nic, const char *dst_addr,
522 unsigned int type, unsigned int size, const char *packet)
524 struct amd8111e_priv *lp = nic->priv_data;
525 struct eth_frame *frame;
528 /* check packet size */
529 if (size > TX_PKT_LEN_MAX) {
530 printf("amd8111e_transmit(): too large packet, drop\n");
536 if (amd8111e_wait_tx_ring(lp, index))
540 frame = (struct eth_frame *)lp->tx_buf[index];
541 memset(frame->data, 0, TX_PKT_LEN_MAX);
542 memcpy(frame->dst_addr, dst_addr, ETH_ALEN);
543 memcpy(frame->src_addr, nic->node_addr, ETH_ALEN);
544 frame->type = htons(type);
545 memcpy(frame->data, packet, size);
548 lp->tx_ring[index].buf_len = cpu_to_le16(ETH_HLEN + size);
549 lp->tx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(frame));
551 lp->tx_ring[index].tx_flags =
552 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT | ADD_FCS_BIT | LTINT_BIT);
553 writel(VAL1 | TDMD0, lp->mmio + CMD0);
554 readl(lp->mmio + CMD0);
556 /* update slot pointer */
557 lp->tx_idx = (lp->tx_idx + 1) & TX_SLOTS_MASK;
560 static int amd8111e_poll(struct nic *nic, int retrieve)
562 /* return true if there's an ethernet packet ready to read */
563 /* nic->packet should contain data on return */
564 /* nic->packetlen should contain length of data */
566 struct amd8111e_priv *lp = nic->priv_data;
568 unsigned int index, pkt_ok;
570 amd8111e_poll_link(lp);
573 status = le16_to_cpu(lp->rx_ring[index].rx_flags);
574 pkt_len = le16_to_cpu(lp->rx_ring[index].msg_len) - 4; /* remove 4bytes FCS */
576 if (status & OWN_BIT)
579 if (status & ERR_BIT)
581 else if (!(status & STP_BIT))
583 else if (!(status & ENP_BIT))
585 else if (pkt_len < RX_PKT_LEN_MIN)
587 else if (pkt_len > RX_PKT_LEN_MAX)
595 nic->packetlen = pkt_len;
596 memcpy(nic->packet, lp->rx_buf[index], nic->packetlen);
599 lp->rx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[index]));
600 lp->rx_ring[index].buf_len = cpu_to_le16(RX_BUF_LEN);
602 lp->rx_ring[index].rx_flags = cpu_to_le16(OWN_BIT);
603 writel(VAL2 | RDMD0, lp->mmio + CMD0);
604 readl(lp->mmio + CMD0);
606 lp->rx_idx = (lp->rx_idx + 1) & RX_SLOTS_MASK;
610 static void amd8111e_disable(struct nic *nic)
612 struct amd8111e_priv *lp = nic->priv_data;
614 /* disable interrupt */
615 amd8111e_disable_interrupt(lp);
618 amd8111e_init_hw_default(lp);
627 static void amd8111e_irq(struct nic *nic, irq_action_t action)
629 struct amd8111e_priv *lp = nic->priv_data;
633 amd8111e_disable_interrupt(lp);
636 amd8111e_enable_interrupt(lp);
639 amd8111e_force_interrupt(lp);
644 static struct nic_operations amd8111e_operations = {
645 .connect = dummy_connect,
646 .poll = amd8111e_poll,
647 .transmit = amd8111e_transmit,
651 static int amd8111e_probe(struct nic *nic, struct pci_device *pdev)
653 struct amd8111e_priv *lp = &amd8111e;
654 unsigned long mmio_start, mmio_len;
656 pci_fill_nic ( nic, pdev );
658 mmio_start = pci_bar_start(pdev, PCI_BASE_ADDRESS_0);
659 mmio_len = pci_bar_size(pdev, PCI_BASE_ADDRESS_0);
661 memset(lp, 0, sizeof(*lp));
664 lp->mmio = ioremap(mmio_start, mmio_len);
666 adjust_pci_device(pdev);
670 amd8111e_restart(lp);
672 nic->nic_op = &amd8111e_operations;
676 static struct pci_device_id amd8111e_nics[] = {
677 PCI_ROM(0x1022, 0x7462, "amd8111e", "AMD8111E"),
680 PCI_DRIVER ( amd8111e_driver, amd8111e_nics, PCI_NO_CLASS );
682 DRIVER ( "AMD8111E", nic_driver, pci_driver, amd8111e_driver,
683 amd8111e_probe, amd8111e_disable );