2 * Copyright (C) 2003 - 2006 NetXen, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
23 * Contact Information:
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
30 * Source file for NIC routines to initialize the Phantom Hardware
34 #include <linux/netdevice.h>
35 #include <linux/delay.h>
36 #include "netxen_nic.h"
37 #include "netxen_nic_hw.h"
38 #include "netxen_nic_phan_reg.h"
40 struct crb_addr_pair {
45 #define NETXEN_MAX_CRB_XFORM 60
46 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
47 #define NETXEN_ADDR_ERROR ((unsigned long ) 0xffffffff )
49 #define crb_addr_transform(name) \
50 crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
51 NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
53 #define NETXEN_NIC_XDMA_RESET 0x8000ff
56 netxen_nic_locked_write_reg(struct netxen_adapter *adapter,
57 unsigned long off, int *data)
59 void __iomem *addr = pci_base_offset(adapter, off);
63 static void crb_addr_transform_setup(void)
65 crb_addr_transform(XDMA);
66 crb_addr_transform(TIMR);
67 crb_addr_transform(SRE);
68 crb_addr_transform(SQN3);
69 crb_addr_transform(SQN2);
70 crb_addr_transform(SQN1);
71 crb_addr_transform(SQN0);
72 crb_addr_transform(SQS3);
73 crb_addr_transform(SQS2);
74 crb_addr_transform(SQS1);
75 crb_addr_transform(SQS0);
76 crb_addr_transform(RPMX7);
77 crb_addr_transform(RPMX6);
78 crb_addr_transform(RPMX5);
79 crb_addr_transform(RPMX4);
80 crb_addr_transform(RPMX3);
81 crb_addr_transform(RPMX2);
82 crb_addr_transform(RPMX1);
83 crb_addr_transform(RPMX0);
84 crb_addr_transform(ROMUSB);
85 crb_addr_transform(SN);
86 crb_addr_transform(QMN);
87 crb_addr_transform(QMS);
88 crb_addr_transform(PGNI);
89 crb_addr_transform(PGND);
90 crb_addr_transform(PGN3);
91 crb_addr_transform(PGN2);
92 crb_addr_transform(PGN1);
93 crb_addr_transform(PGN0);
94 crb_addr_transform(PGSI);
95 crb_addr_transform(PGSD);
96 crb_addr_transform(PGS3);
97 crb_addr_transform(PGS2);
98 crb_addr_transform(PGS1);
99 crb_addr_transform(PGS0);
100 crb_addr_transform(PS);
101 crb_addr_transform(PH);
102 crb_addr_transform(NIU);
103 crb_addr_transform(I2Q);
104 crb_addr_transform(EG);
105 crb_addr_transform(MN);
106 crb_addr_transform(MS);
107 crb_addr_transform(CAS2);
108 crb_addr_transform(CAS1);
109 crb_addr_transform(CAS0);
110 crb_addr_transform(CAM);
111 crb_addr_transform(C2C1);
112 crb_addr_transform(C2C0);
115 int netxen_init_firmware(struct netxen_adapter *adapter)
117 u32 state = 0, loops = 0, err = 0;
120 state = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
122 if (state == PHAN_INITIALIZE_ACK)
125 while (state != PHAN_INITIALIZE_COMPLETE && loops < 2000) {
128 state = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
133 printk(KERN_ERR "Cmd Peg initialization not complete:%x.\n",
139 writel(MPORT_SINGLE_FUNCTION_MODE,
140 NETXEN_CRB_NORMALIZE(adapter, CRB_MPORT_MODE));
141 writel(PHAN_INITIALIZE_ACK,
142 NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
147 #define NETXEN_ADDR_LIMIT 0xffffffffULL
149 void *netxen_alloc(struct pci_dev *pdev, size_t sz, dma_addr_t * ptr,
150 struct pci_dev **used_dev)
154 addr = pci_alloc_consistent(pdev, sz, ptr);
155 if ((unsigned long long)(*ptr) < NETXEN_ADDR_LIMIT) {
159 pci_free_consistent(pdev, sz, addr, *ptr);
160 addr = pci_alloc_consistent(NULL, sz, ptr);
165 void netxen_initialize_adapter_sw(struct netxen_adapter *adapter)
170 struct netxen_rcv_desc_ctx *rcv_desc;
172 DPRINTK(INFO, "initializing some queues: %p\n", adapter);
173 for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
174 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
175 struct netxen_rx_buffer *rx_buf;
176 rcv_desc = &adapter->recv_ctx[ctxid].rcv_desc[ring];
177 rcv_desc->rcv_free = rcv_desc->max_rx_desc_count;
178 rcv_desc->begin_alloc = 0;
179 rx_buf = rcv_desc->rx_buf_arr;
180 num_rx_bufs = rcv_desc->max_rx_desc_count;
182 * Now go through all of them, set reference handles
183 * and put them in the queues.
185 for (i = 0; i < num_rx_bufs; i++) {
186 rx_buf->ref_handle = i;
187 rx_buf->state = NETXEN_BUFFER_FREE;
188 DPRINTK(INFO, "Rx buf:ctx%d i(%d) rx_buf:"
189 "%p\n", ctxid, i, rx_buf);
196 void netxen_initialize_adapter_hw(struct netxen_adapter *adapter)
199 struct netxen_board_info *board_info = &(adapter->ahw.boardcfg);
201 if (netxen_nic_get_board_info(adapter) != 0)
202 printk("%s: Error getting board config info.\n",
203 netxen_nic_driver_name);
204 get_brd_port_by_type(board_info->board_type, &ports);
206 printk(KERN_ERR "%s: Unknown board type\n",
207 netxen_nic_driver_name);
208 adapter->ahw.max_ports = ports;
211 void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
213 switch (adapter->ahw.board_type) {
215 adapter->enable_phy_interrupts =
216 netxen_niu_gbe_enable_phy_interrupts;
217 adapter->disable_phy_interrupts =
218 netxen_niu_gbe_disable_phy_interrupts;
219 adapter->handle_phy_intr = netxen_nic_gbe_handle_phy_intr;
220 adapter->macaddr_set = netxen_niu_macaddr_set;
221 adapter->set_mtu = netxen_nic_set_mtu_gb;
222 adapter->set_promisc = netxen_niu_set_promiscuous_mode;
223 adapter->unset_promisc = netxen_niu_set_promiscuous_mode;
224 adapter->phy_read = netxen_niu_gbe_phy_read;
225 adapter->phy_write = netxen_niu_gbe_phy_write;
226 adapter->init_port = netxen_niu_gbe_init_port;
227 adapter->init_niu = netxen_nic_init_niu_gb;
228 adapter->stop_port = netxen_niu_disable_gbe_port;
231 case NETXEN_NIC_XGBE:
232 adapter->enable_phy_interrupts =
233 netxen_niu_xgbe_enable_phy_interrupts;
234 adapter->disable_phy_interrupts =
235 netxen_niu_xgbe_disable_phy_interrupts;
236 adapter->handle_phy_intr = netxen_nic_xgbe_handle_phy_intr;
237 adapter->macaddr_set = netxen_niu_xg_macaddr_set;
238 adapter->set_mtu = netxen_nic_set_mtu_xgb;
239 adapter->init_port = netxen_niu_xg_init_port;
240 adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
241 adapter->unset_promisc = netxen_niu_xg_set_promiscuous_mode;
242 adapter->stop_port = netxen_niu_disable_xg_port;
251 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
252 * address to external PCI CRB address.
254 unsigned long netxen_decode_crb_addr(unsigned long addr)
257 unsigned long base_addr, offset, pci_base;
259 crb_addr_transform_setup();
261 pci_base = NETXEN_ADDR_ERROR;
262 base_addr = addr & 0xfff00000;
263 offset = addr & 0x000fffff;
265 for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
266 if (crb_addr_xform[i] == base_addr) {
271 if (pci_base == NETXEN_ADDR_ERROR)
274 return (pci_base + offset);
277 static long rom_max_timeout = 10000;
278 static long rom_lock_timeout = 1000000;
280 static inline int rom_lock(struct netxen_adapter *adapter)
287 /* acquire semaphore2 from PCI HW block */
288 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK),
292 if (timeout >= rom_lock_timeout)
302 for (iter = 0; iter < 20; iter++)
303 cpu_relax(); /*This a nop instr on i386 */
306 netxen_nic_reg_write(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
310 int netxen_wait_rom_done(struct netxen_adapter *adapter)
316 done = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_GLB_STATUS);
319 if (timeout >= rom_max_timeout) {
320 printk("Timeout reached waiting for rom done");
327 static inline int netxen_rom_wren(struct netxen_adapter *adapter)
329 /* Set write enable latch in ROM status register */
330 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
331 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
333 if (netxen_wait_rom_done(adapter)) {
339 static inline unsigned int netxen_rdcrbreg(struct netxen_adapter *adapter,
342 unsigned int data = 0xdeaddead;
343 data = netxen_nic_reg_read(adapter, addr);
347 static inline int netxen_do_rom_rdsr(struct netxen_adapter *adapter)
349 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
351 if (netxen_wait_rom_done(adapter)) {
354 return netxen_rdcrbreg(adapter, NETXEN_ROMUSB_ROM_RDATA);
357 static inline void netxen_rom_unlock(struct netxen_adapter *adapter)
361 /* release semaphore2 */
362 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK), &val);
366 int netxen_rom_wip_poll(struct netxen_adapter *adapter)
371 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
373 val = netxen_do_rom_rdsr(adapter);
376 if (timeout > rom_max_timeout) {
383 static inline int do_rom_fast_write(struct netxen_adapter *adapter, int addr,
386 if (netxen_rom_wren(adapter)) {
389 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_WDATA, data);
390 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
391 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
392 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
394 if (netxen_wait_rom_done(adapter)) {
395 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
399 return netxen_rom_wip_poll(adapter);
403 do_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
405 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
406 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
407 udelay(100); /* prevent bursting on CRB */
408 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
409 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
410 if (netxen_wait_rom_done(adapter)) {
411 printk("Error waiting for rom done\n");
414 /* reset abyte_cnt and dummy_byte_cnt */
415 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
416 udelay(100); /* prevent bursting on CRB */
417 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
419 *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
423 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
427 if (rom_lock(adapter) != 0)
430 ret = do_rom_fast_read(adapter, addr, valp);
431 netxen_rom_unlock(adapter);
435 int netxen_rom_fast_write(struct netxen_adapter *adapter, int addr, int data)
439 if (rom_lock(adapter) != 0) {
442 ret = do_rom_fast_write(adapter, addr, data);
443 netxen_rom_unlock(adapter);
446 int netxen_do_rom_se(struct netxen_adapter *adapter, int addr)
448 netxen_rom_wren(adapter);
449 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
450 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
451 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
453 if (netxen_wait_rom_done(adapter)) {
454 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
457 return netxen_rom_wip_poll(adapter);
460 int netxen_rom_se(struct netxen_adapter *adapter, int addr)
463 if (rom_lock(adapter) != 0) {
466 ret = netxen_do_rom_se(adapter, addr);
467 netxen_rom_unlock(adapter);
471 #define NETXEN_BOARDTYPE 0x4008
472 #define NETXEN_BOARDNUM 0x400c
473 #define NETXEN_CHIPNUM 0x4010
474 #define NETXEN_ROMBUS_RESET 0xFFFFFFFF
475 #define NETXEN_ROM_FIRST_BARRIER 0x800000000ULL
476 #define NETXEN_ROM_FOUND_INIT 0x400
478 int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
480 int addr, val, status;
483 struct crb_addr_pair *buf;
487 status = netxen_nic_get_board_info(adapter);
489 printk("%s: netxen_pinit_from_rom: Error getting board info\n",
490 netxen_nic_driver_name);
492 netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
493 NETXEN_ROMBUS_RESET);
497 if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
498 printk("P2 ROM board type: 0x%08x\n", val);
500 printk("Could not read board type\n");
501 if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
502 printk("P2 ROM board num: 0x%08x\n", val);
504 printk("Could not read board number\n");
505 if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
506 printk("P2 ROM chip num: 0x%08x\n", val);
508 printk("Could not read chip number\n");
511 if (netxen_rom_fast_read(adapter, 0, &n) == 0
512 && (n & NETXEN_ROM_FIRST_BARRIER)) {
513 n &= ~NETXEN_ROM_ROUNDUP;
514 if (n < NETXEN_ROM_FOUND_INIT) {
516 printk("%s: %d CRB init values found"
517 " in ROM.\n", netxen_nic_driver_name, n);
519 printk("%s:n=0x%x Error! NetXen card flash not"
520 " initialized.\n", __FUNCTION__, n);
523 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
525 printk("%s: netxen_pinit_from_rom: Unable to calloc "
526 "memory.\n", netxen_nic_driver_name);
529 for (i = 0; i < n; i++) {
530 if (netxen_rom_fast_read(adapter, 8 * i + 4, &val) != 0
531 || netxen_rom_fast_read(adapter, 8 * i + 8,
539 printk("%s: PCI: 0x%08x == 0x%08x\n",
540 netxen_nic_driver_name, (unsigned int)
541 netxen_decode_crb_addr((unsigned long)
544 for (i = 0; i < n; i++) {
547 netxen_decode_crb_addr((unsigned long)buf[i].addr) +
549 /* skipping cold reboot MAGIC */
550 if (off == NETXEN_CAM_RAM(0x1fc))
553 /* After writing this register, HW needs time for CRB */
554 /* to quiet down (else crb_window returns 0xffffffff) */
555 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
557 /* hold xdma in reset also */
558 buf[i].data = NETXEN_NIC_XDMA_RESET;
561 if (ADDR_IN_WINDOW1(off)) {
563 NETXEN_CRB_NORMALIZE(adapter, off));
565 netxen_nic_pci_change_crbwindow(adapter, 0);
567 pci_base_offset(adapter, off));
569 netxen_nic_pci_change_crbwindow(adapter, 1);
571 if (init_delay == 1) {
579 /* disable_peg_cache_all */
581 /* unreset_net_cache */
582 netxen_nic_hw_read_wx(adapter, NETXEN_ROMUSB_GLB_SW_RESET, &val,
584 netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
586 /* p2dn replyCount */
587 netxen_crb_writelit_adapter(adapter,
588 NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
589 /* disable_peg_cache 0 */
590 netxen_crb_writelit_adapter(adapter,
591 NETXEN_CRB_PEG_NET_D + 0x4c, 8);
592 /* disable_peg_cache 1 */
593 netxen_crb_writelit_adapter(adapter,
594 NETXEN_CRB_PEG_NET_I + 0x4c, 8);
599 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x8,
601 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0xc,
604 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x8,
606 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0xc,
609 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x8,
611 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0xc,
614 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x8,
616 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0xc,
622 int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
628 adapter->dummy_dma.addr =
629 pci_alloc_consistent(adapter->ahw.pdev,
630 NETXEN_HOST_DUMMY_DMA_SIZE,
631 &adapter->dummy_dma.phys_addr);
632 if (adapter->dummy_dma.addr == NULL) {
633 printk("%s: ERROR: Could not allocate dummy DMA memory\n",
638 addr = (uint64_t) adapter->dummy_dma.phys_addr;
639 hi = (addr >> 32) & 0xffffffff;
640 lo = addr & 0xffffffff;
642 writel(hi, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI));
643 writel(lo, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO));
648 void netxen_free_adapter_offload(struct netxen_adapter *adapter)
650 if (adapter->dummy_dma.addr) {
651 pci_free_consistent(adapter->ahw.pdev,
652 NETXEN_HOST_DUMMY_DMA_SIZE,
653 adapter->dummy_dma.addr,
654 adapter->dummy_dma.phys_addr);
655 adapter->dummy_dma.addr = NULL;
659 void netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
665 while (val != PHAN_INITIALIZE_COMPLETE && loops < 200000) {
669 readl(NETXEN_CRB_NORMALIZE
670 (adapter, CRB_CMDPEG_STATE));
673 if (val != PHAN_INITIALIZE_COMPLETE)
674 printk("WARNING: Initial boot wait loop failed...\n");
678 int netxen_nic_rx_has_work(struct netxen_adapter *adapter)
682 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
683 struct netxen_recv_context *recv_ctx =
684 &(adapter->recv_ctx[ctx]);
686 struct status_desc *desc_head;
687 struct status_desc *desc;
689 consumer = recv_ctx->status_rx_consumer;
690 desc_head = recv_ctx->rcv_status_desc_head;
691 desc = &desc_head[consumer];
693 if (((le16_to_cpu(netxen_get_sts_owner(desc)))
694 & STATUS_OWNER_HOST))
701 static inline int netxen_nic_check_temp(struct netxen_adapter *adapter)
704 struct netxen_port *port;
705 struct net_device *netdev;
706 uint32_t temp, temp_state, temp_val;
709 temp = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_TEMP_STATE));
711 temp_state = nx_get_temp_state(temp);
712 temp_val = nx_get_temp_val(temp);
714 if (temp_state == NX_TEMP_PANIC) {
716 "%s: Device temperature %d degrees C exceeds"
717 " maximum allowed. Hardware has been shut down.\n",
718 netxen_nic_driver_name, temp_val);
719 for (port_num = 0; port_num < adapter->ahw.max_ports;
721 port = adapter->port[port_num];
722 netdev = port->netdev;
724 netif_carrier_off(netdev);
725 netif_stop_queue(netdev);
728 } else if (temp_state == NX_TEMP_WARN) {
729 if (adapter->temp == NX_TEMP_NORMAL) {
731 "%s: Device temperature %d degrees C "
732 "exceeds operating range."
733 " Immediate action needed.\n",
734 netxen_nic_driver_name, temp_val);
737 if (adapter->temp == NX_TEMP_WARN) {
739 "%s: Device temperature is now %d degrees C"
740 " in normal range.\n", netxen_nic_driver_name,
744 adapter->temp = temp_state;
748 void netxen_watchdog_task(struct work_struct *work)
751 struct netxen_port *port;
752 struct net_device *netdev;
753 struct netxen_adapter *adapter =
754 container_of(work, struct netxen_adapter, watchdog_task);
756 if (netxen_nic_check_temp(adapter))
759 for (port_num = 0; port_num < adapter->ahw.max_ports; port_num++) {
760 port = adapter->port[port_num];
761 netdev = port->netdev;
763 if ((netif_running(netdev)) && !netif_carrier_ok(netdev)) {
764 printk(KERN_INFO "%s port %d, %s carrier is now ok\n",
765 netxen_nic_driver_name, port_num, netdev->name);
766 netif_carrier_on(netdev);
769 if (netif_queue_stopped(netdev))
770 netif_wake_queue(netdev);
773 if (adapter->handle_phy_intr)
774 adapter->handle_phy_intr(adapter);
775 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
779 * netxen_process_rcv() send the received packet to the protocol stack.
780 * and if the number of receives exceeds RX_BUFFERS_REFILL, then we
781 * invoke the routine to send more rx buffers to the Phantom...
784 netxen_process_rcv(struct netxen_adapter *adapter, int ctxid,
785 struct status_desc *desc)
787 struct netxen_port *port = adapter->port[netxen_get_sts_port(desc)];
788 struct pci_dev *pdev = port->pdev;
789 struct net_device *netdev = port->netdev;
790 int index = le16_to_cpu(netxen_get_sts_refhandle(desc));
791 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctxid]);
792 struct netxen_rx_buffer *buffer;
794 u32 length = le16_to_cpu(netxen_get_sts_totallength(desc));
796 struct netxen_rcv_desc_ctx *rcv_desc;
799 desc_ctx = netxen_get_sts_type(desc);
800 if (unlikely(desc_ctx >= NUM_RCV_DESC_RINGS)) {
801 printk("%s: %s Bad Rcv descriptor ring\n",
802 netxen_nic_driver_name, netdev->name);
806 rcv_desc = &recv_ctx->rcv_desc[desc_ctx];
807 if (unlikely(index > rcv_desc->max_rx_desc_count)) {
808 DPRINTK(ERR, "Got a buffer index:%x Max is %x\n",
809 index, rcv_desc->max_rx_desc_count);
812 buffer = &rcv_desc->rx_buf_arr[index];
813 if (desc_ctx == RCV_DESC_LRO_CTXID) {
814 buffer->lro_current_frags++;
815 if (netxen_get_sts_desc_lro_last_frag(desc)) {
816 buffer->lro_expected_frags =
817 netxen_get_sts_desc_lro_cnt(desc);
818 buffer->lro_length = length;
820 if (buffer->lro_current_frags != buffer->lro_expected_frags) {
821 if (buffer->lro_expected_frags != 0) {
822 printk("LRO: (refhandle:%x) recv frag."
823 "wait for last. flags: %x expected:%d"
825 netxen_get_sts_desc_lro_last_frag(desc),
826 buffer->lro_expected_frags,
827 buffer->lro_current_frags);
833 pci_unmap_single(pdev, buffer->dma, rcv_desc->dma_size,
836 skb = (struct sk_buff *)buffer->skb;
838 if (likely(netxen_get_sts_status(desc) == STATUS_CKSUM_OK)) {
839 port->stats.csummed++;
840 skb->ip_summed = CHECKSUM_UNNECESSARY;
843 if (desc_ctx == RCV_DESC_LRO_CTXID) {
844 /* True length was only available on the last pkt */
845 skb_put(skb, buffer->lro_length);
847 skb_put(skb, length);
850 skb->protocol = eth_type_trans(skb, netdev);
852 ret = netif_receive_skb(skb);
855 * RH: Do we need these stats on a regular basis. Can we get it from
860 port->stats.uphappy++;
864 port->stats.uplcong++;
868 port->stats.upmcong++;
872 port->stats.uphcong++;
876 port->stats.updropped++;
880 port->stats.updunno++;
884 netdev->last_rx = jiffies;
886 rcv_desc->rcv_free++;
887 rcv_desc->rcv_pending--;
890 * We just consumed one buffer so post a buffer.
892 adapter->stats.post_called++;
894 buffer->state = NETXEN_BUFFER_FREE;
895 buffer->lro_current_frags = 0;
896 buffer->lro_expected_frags = 0;
898 port->stats.no_rcv++;
899 port->stats.rxbytes += length;
902 /* Process Receive status ring */
903 u32 netxen_process_rcv_ring(struct netxen_adapter *adapter, int ctxid, int max)
905 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctxid]);
906 struct status_desc *desc_head = recv_ctx->rcv_status_desc_head;
907 struct status_desc *desc; /* used to read status desc here */
908 u32 consumer = recv_ctx->status_rx_consumer;
912 DPRINTK(INFO, "procesing receive\n");
914 * we assume in this case that there is only one port and that is
915 * port #1...changes need to be done in firmware to indicate port
916 * number as part of the descriptor. This way we will be able to get
917 * the netdev which is associated with that device.
919 while (count < max) {
920 desc = &desc_head[consumer];
922 (le16_to_cpu(netxen_get_sts_owner(desc)) &
923 STATUS_OWNER_HOST)) {
924 DPRINTK(ERR, "desc %p ownedby %x\n", desc,
925 netxen_get_sts_owner(desc));
928 netxen_process_rcv(adapter, ctxid, desc);
929 netxen_clear_sts_owner(desc);
930 netxen_set_sts_owner(desc, STATUS_OWNER_PHANTOM);
931 consumer = (consumer + 1) & (adapter->max_rx_desc_count - 1);
935 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
936 netxen_post_rx_buffers_nodb(adapter, ctxid, ring);
940 /* update the consumer index in phantom */
942 adapter->stats.process_rcv++;
943 recv_ctx->status_rx_consumer = consumer;
944 recv_ctx->status_rx_producer = producer;
948 NETXEN_CRB_NORMALIZE(adapter,
949 recv_crb_registers[ctxid].
950 crb_rcv_status_consumer));
956 /* Process Command status ring */
957 int netxen_process_cmd_ring(unsigned long data)
961 struct netxen_adapter *adapter = (struct netxen_adapter *)data;
964 struct netxen_cmd_buffer *buffer;
965 struct netxen_port *port; /* port #1 */
966 struct netxen_port *nport;
967 struct pci_dev *pdev;
968 struct netxen_skb_frag *frag;
970 struct sk_buff *skb = NULL;
974 spin_lock(&adapter->tx_lock);
975 last_consumer = adapter->last_cmd_consumer;
976 DPRINTK(INFO, "procesing xmit complete\n");
977 /* we assume in this case that there is only one port and that is
978 * port #1...changes need to be done in firmware to indicate port
979 * number as part of the descriptor. This way we will be able to get
980 * the netdev which is associated with that device.
983 consumer = *(adapter->cmd_consumer);
984 if (last_consumer == consumer) { /* Ring is empty */
985 DPRINTK(INFO, "last_consumer %d == consumer %d\n",
986 last_consumer, consumer);
987 spin_unlock(&adapter->tx_lock);
991 adapter->proc_cmd_buf_counter++;
992 adapter->stats.process_xmit++;
994 * Not needed - does not seem to be used anywhere.
995 * adapter->cmd_consumer = consumer;
997 spin_unlock(&adapter->tx_lock);
999 while ((last_consumer != consumer) && (count1 < MAX_STATUS_HANDLE)) {
1000 buffer = &adapter->cmd_buf_arr[last_consumer];
1001 port = adapter->port[buffer->port];
1003 frag = &buffer->frag_array[0];
1005 if (skb && (cmpxchg(&buffer->skb, skb, 0) == skb)) {
1006 pci_unmap_single(pdev, frag->dma, frag->length,
1008 for (i = 1; i < buffer->frag_count; i++) {
1009 DPRINTK(INFO, "getting fragment no %d\n", i);
1010 frag++; /* Get the next frag */
1011 pci_unmap_page(pdev, frag->dma, frag->length,
1015 port->stats.skbfreed++;
1016 dev_kfree_skb_any(skb);
1018 } else if (adapter->proc_cmd_buf_counter == 1) {
1019 port->stats.txnullskb++;
1021 if (unlikely(netif_queue_stopped(port->netdev)
1022 && netif_carrier_ok(port->netdev))
1023 && ((jiffies - port->netdev->trans_start) >
1024 port->netdev->watchdog_timeo)) {
1025 SCHEDULE_WORK(&port->adapter->tx_timeout_task);
1028 last_consumer = get_next_index(last_consumer,
1029 adapter->max_tx_desc_count);
1032 adapter->stats.noxmitdone += count1;
1035 spin_lock(&adapter->tx_lock);
1036 if ((--adapter->proc_cmd_buf_counter) == 0) {
1037 adapter->last_cmd_consumer = last_consumer;
1038 while ((adapter->last_cmd_consumer != consumer)
1039 && (count2 < MAX_STATUS_HANDLE)) {
1041 &adapter->cmd_buf_arr[adapter->last_cmd_consumer];
1046 adapter->last_cmd_consumer =
1047 get_next_index(adapter->last_cmd_consumer,
1048 adapter->max_tx_desc_count);
1051 if (count1 || count2) {
1052 for (p = 0; p < adapter->ahw.max_ports; p++) {
1053 nport = adapter->port[p];
1054 if (netif_queue_stopped(nport->netdev)
1055 && (nport->flags & NETXEN_NETDEV_STATUS)) {
1056 netif_wake_queue(nport->netdev);
1057 nport->flags &= ~NETXEN_NETDEV_STATUS;
1062 * If everything is freed up to consumer then check if the ring is full
1063 * If the ring is full then check if more needs to be freed and
1064 * schedule the call back again.
1066 * This happens when there are 2 CPUs. One could be freeing and the
1067 * other filling it. If the ring is full when we get out of here and
1068 * the card has already interrupted the host then the host can miss the
1071 * There is still a possible race condition and the host could miss an
1072 * interrupt. The card has to take care of this.
1074 if (adapter->last_cmd_consumer == consumer &&
1075 (((adapter->cmd_producer + 1) %
1076 adapter->max_tx_desc_count) == adapter->last_cmd_consumer)) {
1077 consumer = *(adapter->cmd_consumer);
1079 done = (adapter->last_cmd_consumer == consumer);
1081 spin_unlock(&adapter->tx_lock);
1082 DPRINTK(INFO, "last consumer is %d in %s\n", last_consumer,
1088 * netxen_post_rx_buffers puts buffer in the Phantom memory
1090 void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx, u32 ringid)
1092 struct pci_dev *pdev = adapter->ahw.pdev;
1093 struct sk_buff *skb;
1094 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
1095 struct netxen_rcv_desc_ctx *rcv_desc = NULL;
1097 struct rcv_desc *pdesc;
1098 struct netxen_rx_buffer *buffer;
1101 netxen_ctx_msg msg = 0;
1104 adapter->stats.post_called++;
1105 rcv_desc = &recv_ctx->rcv_desc[ringid];
1107 producer = rcv_desc->producer;
1108 index = rcv_desc->begin_alloc;
1109 buffer = &rcv_desc->rx_buf_arr[index];
1110 /* We can start writing rx descriptors into the phantom memory. */
1111 while (buffer->state == NETXEN_BUFFER_FREE) {
1112 skb = dev_alloc_skb(rcv_desc->skb_size);
1113 if (unlikely(!skb)) {
1116 * We need to schedule the posting of buffers to the pegs.
1118 rcv_desc->begin_alloc = index;
1119 DPRINTK(ERR, "netxen_post_rx_buffers: "
1120 " allocated only %d buffers\n", count);
1124 count++; /* now there should be no failure */
1125 pdesc = &rcv_desc->desc_head[producer];
1127 #if defined(XGB_DEBUG)
1128 *(unsigned long *)(skb->head) = 0xc0debabe;
1129 if (skb_is_nonlinear(skb)) {
1130 printk("Allocated SKB @%p is nonlinear\n");
1133 skb_reserve(skb, 2);
1134 /* This will be setup when we receive the
1135 * buffer after it has been filled FSL TBD TBD
1136 * skb->dev = netdev;
1138 dma = pci_map_single(pdev, skb->data, rcv_desc->dma_size,
1139 PCI_DMA_FROMDEVICE);
1140 pdesc->addr_buffer = dma;
1142 buffer->state = NETXEN_BUFFER_BUSY;
1144 /* make a rcv descriptor */
1145 pdesc->reference_handle = buffer->ref_handle;
1146 pdesc->buffer_length = rcv_desc->dma_size;
1147 DPRINTK(INFO, "done writing descripter\n");
1149 get_next_index(producer, rcv_desc->max_rx_desc_count);
1150 index = get_next_index(index, rcv_desc->max_rx_desc_count);
1151 buffer = &rcv_desc->rx_buf_arr[index];
1153 /* if we did allocate buffers, then write the count to Phantom */
1155 rcv_desc->begin_alloc = index;
1156 rcv_desc->rcv_pending += count;
1157 adapter->stats.lastposted = count;
1158 adapter->stats.posted += count;
1159 rcv_desc->producer = producer;
1160 if (rcv_desc->rcv_free >= 32) {
1161 rcv_desc->rcv_free = 0;
1163 writel((producer - 1) &
1164 (rcv_desc->max_rx_desc_count - 1),
1165 NETXEN_CRB_NORMALIZE(adapter,
1166 recv_crb_registers[0].
1167 rcv_desc_crb[ringid].
1168 crb_rcv_producer_offset));
1170 * Write a doorbell msg to tell phanmon of change in
1171 * receive ring producer
1173 netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1174 netxen_set_msg_privid(msg);
1175 netxen_set_msg_count(msg,
1178 max_rx_desc_count - 1)));
1179 netxen_set_msg_ctxid(msg, 0);
1180 netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1182 DB_NORMALIZE(adapter,
1183 NETXEN_RCV_PRODUCER_OFFSET));
1188 void netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter, uint32_t ctx,
1191 struct pci_dev *pdev = adapter->ahw.pdev;
1192 struct sk_buff *skb;
1193 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
1194 struct netxen_rcv_desc_ctx *rcv_desc = NULL;
1196 struct rcv_desc *pdesc;
1197 struct netxen_rx_buffer *buffer;
1201 adapter->stats.post_called++;
1202 rcv_desc = &recv_ctx->rcv_desc[ringid];
1204 producer = rcv_desc->producer;
1205 index = rcv_desc->begin_alloc;
1206 buffer = &rcv_desc->rx_buf_arr[index];
1207 /* We can start writing rx descriptors into the phantom memory. */
1208 while (buffer->state == NETXEN_BUFFER_FREE) {
1209 skb = dev_alloc_skb(rcv_desc->skb_size);
1210 if (unlikely(!skb)) {
1212 * We need to schedule the posting of buffers to the pegs.
1214 rcv_desc->begin_alloc = index;
1215 DPRINTK(ERR, "netxen_post_rx_buffers_nodb: "
1216 " allocated only %d buffers\n", count);
1219 count++; /* now there should be no failure */
1220 pdesc = &rcv_desc->desc_head[producer];
1221 skb_reserve(skb, 2);
1223 * This will be setup when we receive the
1224 * buffer after it has been filled
1225 * skb->dev = netdev;
1228 buffer->state = NETXEN_BUFFER_BUSY;
1229 buffer->dma = pci_map_single(pdev, skb->data,
1231 PCI_DMA_FROMDEVICE);
1233 /* make a rcv descriptor */
1234 pdesc->reference_handle = le16_to_cpu(buffer->ref_handle);
1235 pdesc->buffer_length = le16_to_cpu(rcv_desc->dma_size);
1236 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1237 DPRINTK(INFO, "done writing descripter\n");
1239 get_next_index(producer, rcv_desc->max_rx_desc_count);
1240 index = get_next_index(index, rcv_desc->max_rx_desc_count);
1241 buffer = &rcv_desc->rx_buf_arr[index];
1244 /* if we did allocate buffers, then write the count to Phantom */
1246 rcv_desc->begin_alloc = index;
1247 rcv_desc->rcv_pending += count;
1248 adapter->stats.lastposted = count;
1249 adapter->stats.posted += count;
1250 rcv_desc->producer = producer;
1251 if (rcv_desc->rcv_free >= 32) {
1252 rcv_desc->rcv_free = 0;
1254 writel((producer - 1) &
1255 (rcv_desc->max_rx_desc_count - 1),
1256 NETXEN_CRB_NORMALIZE(adapter,
1257 recv_crb_registers[0].
1258 rcv_desc_crb[ringid].
1259 crb_rcv_producer_offset));
1265 int netxen_nic_tx_has_work(struct netxen_adapter *adapter)
1267 if (find_diff_among(adapter->last_cmd_consumer,
1268 adapter->cmd_producer,
1269 adapter->max_tx_desc_count) > 0)
1276 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1278 struct netxen_port *port;
1281 memset(&adapter->stats, 0, sizeof(adapter->stats));
1282 for (port_num = 0; port_num < adapter->ahw.max_ports; port_num++) {
1283 port = adapter->port[port_num];
1284 memset(&port->stats, 0, sizeof(port->stats));