2 * Copyright (C) 2003 - 2009 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:
27 * Cupertino, CA 95014-0701
31 #include <linux/netdevice.h>
32 #include <linux/delay.h>
33 #include "netxen_nic.h"
34 #include "netxen_nic_hw.h"
35 #include "netxen_nic_phan_reg.h"
37 struct crb_addr_pair {
42 #define NETXEN_MAX_CRB_XFORM 60
43 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
44 #define NETXEN_ADDR_ERROR (0xffffffff)
46 #define crb_addr_transform(name) \
47 crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
48 NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
50 #define NETXEN_NIC_XDMA_RESET 0x8000ff
52 static void netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
53 uint32_t ctx, uint32_t ringid);
55 static void crb_addr_transform_setup(void)
57 crb_addr_transform(XDMA);
58 crb_addr_transform(TIMR);
59 crb_addr_transform(SRE);
60 crb_addr_transform(SQN3);
61 crb_addr_transform(SQN2);
62 crb_addr_transform(SQN1);
63 crb_addr_transform(SQN0);
64 crb_addr_transform(SQS3);
65 crb_addr_transform(SQS2);
66 crb_addr_transform(SQS1);
67 crb_addr_transform(SQS0);
68 crb_addr_transform(RPMX7);
69 crb_addr_transform(RPMX6);
70 crb_addr_transform(RPMX5);
71 crb_addr_transform(RPMX4);
72 crb_addr_transform(RPMX3);
73 crb_addr_transform(RPMX2);
74 crb_addr_transform(RPMX1);
75 crb_addr_transform(RPMX0);
76 crb_addr_transform(ROMUSB);
77 crb_addr_transform(SN);
78 crb_addr_transform(QMN);
79 crb_addr_transform(QMS);
80 crb_addr_transform(PGNI);
81 crb_addr_transform(PGND);
82 crb_addr_transform(PGN3);
83 crb_addr_transform(PGN2);
84 crb_addr_transform(PGN1);
85 crb_addr_transform(PGN0);
86 crb_addr_transform(PGSI);
87 crb_addr_transform(PGSD);
88 crb_addr_transform(PGS3);
89 crb_addr_transform(PGS2);
90 crb_addr_transform(PGS1);
91 crb_addr_transform(PGS0);
92 crb_addr_transform(PS);
93 crb_addr_transform(PH);
94 crb_addr_transform(NIU);
95 crb_addr_transform(I2Q);
96 crb_addr_transform(EG);
97 crb_addr_transform(MN);
98 crb_addr_transform(MS);
99 crb_addr_transform(CAS2);
100 crb_addr_transform(CAS1);
101 crb_addr_transform(CAS0);
102 crb_addr_transform(CAM);
103 crb_addr_transform(C2C1);
104 crb_addr_transform(C2C0);
105 crb_addr_transform(SMB);
106 crb_addr_transform(OCM0);
107 crb_addr_transform(I2C0);
110 int netxen_init_firmware(struct netxen_adapter *adapter)
112 u32 state = 0, loops = 0, err = 0;
115 state = adapter->pci_read_normalize(adapter, CRB_CMDPEG_STATE);
117 if (state == PHAN_INITIALIZE_ACK)
120 while (state != PHAN_INITIALIZE_COMPLETE && loops < 2000) {
123 state = adapter->pci_read_normalize(adapter, CRB_CMDPEG_STATE);
128 printk(KERN_ERR "Cmd Peg initialization not complete:%x.\n",
134 adapter->pci_write_normalize(adapter,
135 CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
136 adapter->pci_write_normalize(adapter,
137 CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
138 adapter->pci_write_normalize(adapter,
139 CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
140 adapter->pci_write_normalize(adapter,
141 CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
146 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
148 struct netxen_recv_context *recv_ctx;
149 struct nx_host_rds_ring *rds_ring;
150 struct netxen_rx_buffer *rx_buf;
153 for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
154 recv_ctx = &adapter->recv_ctx[ctxid];
155 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
156 rds_ring = &recv_ctx->rds_rings[ring];
157 for (i = 0; i < rds_ring->max_rx_desc_count; ++i) {
158 rx_buf = &(rds_ring->rx_buf_arr[i]);
159 if (rx_buf->state == NETXEN_BUFFER_FREE)
161 pci_unmap_single(adapter->pdev,
165 if (rx_buf->skb != NULL)
166 dev_kfree_skb_any(rx_buf->skb);
172 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
174 struct netxen_cmd_buffer *cmd_buf;
175 struct netxen_skb_frag *buffrag;
178 cmd_buf = adapter->cmd_buf_arr;
179 for (i = 0; i < adapter->max_tx_desc_count; i++) {
180 buffrag = cmd_buf->frag_array;
182 pci_unmap_single(adapter->pdev, buffrag->dma,
183 buffrag->length, PCI_DMA_TODEVICE);
186 for (j = 0; j < cmd_buf->frag_count; j++) {
189 pci_unmap_page(adapter->pdev, buffrag->dma,
195 /* Free the skb we received in netxen_nic_xmit_frame */
197 dev_kfree_skb_any(cmd_buf->skb);
204 void netxen_free_sw_resources(struct netxen_adapter *adapter)
206 struct netxen_recv_context *recv_ctx;
207 struct nx_host_rds_ring *rds_ring;
210 for (ctx = 0; ctx < MAX_RCV_CTX; ctx++) {
211 recv_ctx = &adapter->recv_ctx[ctx];
212 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
213 rds_ring = &recv_ctx->rds_rings[ring];
214 if (rds_ring->rx_buf_arr) {
215 vfree(rds_ring->rx_buf_arr);
216 rds_ring->rx_buf_arr = NULL;
220 if (adapter->cmd_buf_arr)
221 vfree(adapter->cmd_buf_arr);
225 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
227 struct netxen_recv_context *recv_ctx;
228 struct nx_host_rds_ring *rds_ring;
229 struct netxen_rx_buffer *rx_buf;
230 int ctx, ring, i, num_rx_bufs;
232 struct netxen_cmd_buffer *cmd_buf_arr;
233 struct net_device *netdev = adapter->netdev;
235 cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
236 if (cmd_buf_arr == NULL) {
237 printk(KERN_ERR "%s: Failed to allocate cmd buffer ring\n",
241 memset(cmd_buf_arr, 0, TX_RINGSIZE);
242 adapter->cmd_buf_arr = cmd_buf_arr;
244 for (ctx = 0; ctx < MAX_RCV_CTX; ctx++) {
245 recv_ctx = &adapter->recv_ctx[ctx];
246 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
247 rds_ring = &recv_ctx->rds_rings[ring];
248 switch (RCV_DESC_TYPE(ring)) {
249 case RCV_DESC_NORMAL:
250 rds_ring->max_rx_desc_count =
251 adapter->max_rx_desc_count;
252 rds_ring->flags = RCV_DESC_NORMAL;
253 if (adapter->ahw.cut_through) {
255 NX_CT_DEFAULT_RX_BUF_LEN;
257 NX_CT_DEFAULT_RX_BUF_LEN;
259 rds_ring->dma_size = RX_DMA_MAP_LEN;
261 MAX_RX_BUFFER_LENGTH;
266 rds_ring->max_rx_desc_count =
267 adapter->max_jumbo_rx_desc_count;
268 rds_ring->flags = RCV_DESC_JUMBO;
269 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
271 NX_P3_RX_JUMBO_BUF_MAX_LEN;
274 NX_P2_RX_JUMBO_BUF_MAX_LEN;
276 rds_ring->dma_size + NET_IP_ALIGN;
280 rds_ring->max_rx_desc_count =
281 adapter->max_lro_rx_desc_count;
282 rds_ring->flags = RCV_DESC_LRO;
283 rds_ring->dma_size = RX_LRO_DMA_MAP_LEN;
284 rds_ring->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
288 rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
289 vmalloc(RCV_BUFFSIZE);
290 if (rds_ring->rx_buf_arr == NULL) {
291 printk(KERN_ERR "%s: Failed to allocate "
292 "rx buffer ring %d\n",
294 /* free whatever was already allocated */
297 memset(rds_ring->rx_buf_arr, 0, RCV_BUFFSIZE);
298 INIT_LIST_HEAD(&rds_ring->free_list);
300 * Now go through all of them, set reference handles
301 * and put them in the queues.
303 num_rx_bufs = rds_ring->max_rx_desc_count;
304 rx_buf = rds_ring->rx_buf_arr;
305 for (i = 0; i < num_rx_bufs; i++) {
306 list_add_tail(&rx_buf->list,
307 &rds_ring->free_list);
308 rx_buf->ref_handle = i;
309 rx_buf->state = NETXEN_BUFFER_FREE;
318 netxen_free_sw_resources(adapter);
322 void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
324 switch (adapter->ahw.board_type) {
326 adapter->enable_phy_interrupts =
327 netxen_niu_gbe_enable_phy_interrupts;
328 adapter->disable_phy_interrupts =
329 netxen_niu_gbe_disable_phy_interrupts;
330 adapter->macaddr_set = netxen_niu_macaddr_set;
331 adapter->set_mtu = netxen_nic_set_mtu_gb;
332 adapter->set_promisc = netxen_niu_set_promiscuous_mode;
333 adapter->phy_read = netxen_niu_gbe_phy_read;
334 adapter->phy_write = netxen_niu_gbe_phy_write;
335 adapter->init_port = netxen_niu_gbe_init_port;
336 adapter->stop_port = netxen_niu_disable_gbe_port;
339 case NETXEN_NIC_XGBE:
340 adapter->enable_phy_interrupts =
341 netxen_niu_xgbe_enable_phy_interrupts;
342 adapter->disable_phy_interrupts =
343 netxen_niu_xgbe_disable_phy_interrupts;
344 adapter->macaddr_set = netxen_niu_xg_macaddr_set;
345 adapter->set_mtu = netxen_nic_set_mtu_xgb;
346 adapter->init_port = netxen_niu_xg_init_port;
347 adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
348 adapter->stop_port = netxen_niu_disable_xg_port;
355 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
356 adapter->set_mtu = nx_fw_cmd_set_mtu;
357 adapter->set_promisc = netxen_p3_nic_set_promisc;
362 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
363 * address to external PCI CRB address.
365 static u32 netxen_decode_crb_addr(u32 addr)
368 u32 base_addr, offset, pci_base;
370 crb_addr_transform_setup();
372 pci_base = NETXEN_ADDR_ERROR;
373 base_addr = addr & 0xfff00000;
374 offset = addr & 0x000fffff;
376 for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
377 if (crb_addr_xform[i] == base_addr) {
382 if (pci_base == NETXEN_ADDR_ERROR)
385 return (pci_base + offset);
388 static long rom_max_timeout = 100;
389 static long rom_lock_timeout = 10000;
391 static int rom_lock(struct netxen_adapter *adapter)
398 /* acquire semaphore2 from PCI HW block */
399 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK),
403 if (timeout >= rom_lock_timeout)
413 for (iter = 0; iter < 20; iter++)
414 cpu_relax(); /*This a nop instr on i386 */
417 netxen_nic_reg_write(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
421 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
429 done = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_GLB_STATUS);
432 if (timeout >= rom_max_timeout) {
433 printk("Timeout reached waiting for rom done");
440 static void netxen_rom_unlock(struct netxen_adapter *adapter)
444 /* release semaphore2 */
445 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK), &val);
449 static int do_rom_fast_read(struct netxen_adapter *adapter,
452 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
453 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
454 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
455 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
456 if (netxen_wait_rom_done(adapter)) {
457 printk("Error waiting for rom done\n");
460 /* reset abyte_cnt and dummy_byte_cnt */
461 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
463 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
465 *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
469 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
470 u8 *bytes, size_t size)
475 for (addridx = addr; addridx < (addr + size); addridx += 4) {
477 ret = do_rom_fast_read(adapter, addridx, &v);
480 *(__le32 *)bytes = cpu_to_le32(v);
488 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
489 u8 *bytes, size_t size)
493 ret = rom_lock(adapter);
497 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
499 netxen_rom_unlock(adapter);
503 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
507 if (rom_lock(adapter) != 0)
510 ret = do_rom_fast_read(adapter, addr, valp);
511 netxen_rom_unlock(adapter);
515 #define NETXEN_BOARDTYPE 0x4008
516 #define NETXEN_BOARDNUM 0x400c
517 #define NETXEN_CHIPNUM 0x4010
519 int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
522 int i, n, init_delay = 0;
523 struct crb_addr_pair *buf;
529 netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
531 netxen_rom_unlock(adapter);
534 if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
535 printk("P2 ROM board type: 0x%08x\n", val);
537 printk("Could not read board type\n");
538 if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
539 printk("P2 ROM board num: 0x%08x\n", val);
541 printk("Could not read board number\n");
542 if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
543 printk("P2 ROM chip num: 0x%08x\n", val);
545 printk("Could not read chip number\n");
548 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
549 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
551 netxen_rom_fast_read(adapter, 4, &n) != 0) {
552 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
553 "n: %08x\n", netxen_nic_driver_name, n);
556 offset = n & 0xffffU;
557 n = (n >> 16) & 0xffffU;
559 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
561 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
562 "n: %08x\n", netxen_nic_driver_name, n);
571 printk(KERN_DEBUG "%s: %d CRB init values found"
572 " in ROM.\n", netxen_nic_driver_name, n);
574 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
575 " initialized.\n", __func__, n);
579 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
581 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
582 netxen_nic_driver_name);
585 for (i = 0; i < n; i++) {
586 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
587 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
596 printk(KERN_DEBUG "%s: PCI: 0x%08x == 0x%08x\n",
597 netxen_nic_driver_name,
598 (u32)netxen_decode_crb_addr(addr), val);
600 for (i = 0; i < n; i++) {
602 off = netxen_decode_crb_addr(buf[i].addr);
603 if (off == NETXEN_ADDR_ERROR) {
604 printk(KERN_ERR"CRB init value out of range %x\n",
608 off += NETXEN_PCI_CRBSPACE;
609 /* skipping cold reboot MAGIC */
610 if (off == NETXEN_CAM_RAM(0x1fc))
613 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
614 /* do not reset PCI */
615 if (off == (ROMUSB_GLB + 0xbc))
617 if (off == (ROMUSB_GLB + 0xa8))
619 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
621 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
623 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
625 if (off == (NETXEN_CRB_PEG_NET_1 + 0x18))
626 buf[i].data = 0x1020;
627 /* skip the function enable register */
628 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
630 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
632 if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
636 if (off == NETXEN_ADDR_ERROR) {
637 printk(KERN_ERR "%s: Err: Unknown addr: 0x%08x\n",
638 netxen_nic_driver_name, buf[i].addr);
643 /* After writing this register, HW needs time for CRB */
644 /* to quiet down (else crb_window returns 0xffffffff) */
645 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
647 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
648 /* hold xdma in reset also */
649 buf[i].data = NETXEN_NIC_XDMA_RESET;
650 buf[i].data = 0x8000ff;
654 adapter->hw_write_wx(adapter, off, &buf[i].data, 4);
660 /* disable_peg_cache_all */
662 /* unreset_net_cache */
663 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
664 adapter->hw_read_wx(adapter,
665 NETXEN_ROMUSB_GLB_SW_RESET, &val, 4);
666 netxen_crb_writelit_adapter(adapter,
667 NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
670 /* p2dn replyCount */
671 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
672 /* disable_peg_cache 0 */
673 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
674 /* disable_peg_cache 1 */
675 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
680 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
681 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
683 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
684 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
686 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
687 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
689 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
690 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
694 int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
700 adapter->dummy_dma.addr =
701 pci_alloc_consistent(adapter->pdev,
702 NETXEN_HOST_DUMMY_DMA_SIZE,
703 &adapter->dummy_dma.phys_addr);
704 if (adapter->dummy_dma.addr == NULL) {
705 printk("%s: ERROR: Could not allocate dummy DMA memory\n",
710 addr = (uint64_t) adapter->dummy_dma.phys_addr;
711 hi = (addr >> 32) & 0xffffffff;
712 lo = addr & 0xffffffff;
714 adapter->pci_write_normalize(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
715 adapter->pci_write_normalize(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
717 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
719 adapter->hw_write_wx(adapter, CRB_HOST_DUMMY_BUF, &temp, 4);
725 void netxen_free_adapter_offload(struct netxen_adapter *adapter)
729 if (!adapter->dummy_dma.addr)
732 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
734 if (dma_watchdog_shutdown_request(adapter) == 1)
737 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
743 pci_free_consistent(adapter->pdev,
744 NETXEN_HOST_DUMMY_DMA_SIZE,
745 adapter->dummy_dma.addr,
746 adapter->dummy_dma.phys_addr);
747 adapter->dummy_dma.addr = NULL;
749 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
750 adapter->netdev->name);
754 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
761 val = adapter->pci_read_normalize(adapter,
764 if (val == PHAN_INITIALIZE_COMPLETE ||
765 val == PHAN_INITIALIZE_ACK)
773 pegtune_val = adapter->pci_read_normalize(adapter,
774 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
775 printk(KERN_WARNING "netxen_phantom_init: init failed, "
776 "pegtune_val=%x\n", pegtune_val);
784 int netxen_receive_peg_ready(struct netxen_adapter *adapter)
790 val = adapter->pci_read_normalize(adapter, CRB_RCVPEG_STATE);
792 if (val == PHAN_PEG_RCV_INITIALIZED)
800 printk(KERN_ERR "Receive Peg initialization not "
801 "complete, state: 0x%x.\n", val);
808 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
809 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
811 struct netxen_rx_buffer *buffer;
814 buffer = &rds_ring->rx_buf_arr[index];
816 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
823 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
824 adapter->stats.csummed++;
825 skb->ip_summed = CHECKSUM_UNNECESSARY;
827 skb->ip_summed = CHECKSUM_NONE;
829 skb->dev = adapter->netdev;
834 buffer->state = NETXEN_BUFFER_FREE;
835 buffer->lro_current_frags = 0;
836 buffer->lro_expected_frags = 0;
837 list_add_tail(&buffer->list, &rds_ring->free_list);
842 * netxen_process_rcv() send the received packet to the protocol stack.
843 * and if the number of receives exceeds RX_BUFFERS_REFILL, then we
844 * invoke the routine to send more rx buffers to the Phantom...
846 static void netxen_process_rcv(struct netxen_adapter *adapter, int ctxid,
847 struct status_desc *desc, struct status_desc *frag_desc)
849 struct net_device *netdev = adapter->netdev;
850 u64 sts_data = le64_to_cpu(desc->status_desc_data);
851 int index = netxen_get_sts_refhandle(sts_data);
852 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctxid]);
853 struct netxen_rx_buffer *buffer;
855 u32 length = netxen_get_sts_totallength(sts_data);
857 u16 pkt_offset = 0, cksum;
858 struct nx_host_rds_ring *rds_ring;
860 desc_ctx = netxen_get_sts_type(sts_data);
861 if (unlikely(desc_ctx >= NUM_RCV_DESC_RINGS)) {
862 printk("%s: %s Bad Rcv descriptor ring\n",
863 netxen_nic_driver_name, netdev->name);
867 rds_ring = &recv_ctx->rds_rings[desc_ctx];
868 if (unlikely(index > rds_ring->max_rx_desc_count)) {
869 DPRINTK(ERR, "Got a buffer index:%x Max is %x\n",
870 index, rds_ring->max_rx_desc_count);
873 buffer = &rds_ring->rx_buf_arr[index];
874 if (desc_ctx == RCV_DESC_LRO_CTXID) {
875 buffer->lro_current_frags++;
876 if (netxen_get_sts_desc_lro_last_frag(desc)) {
877 buffer->lro_expected_frags =
878 netxen_get_sts_desc_lro_cnt(desc);
879 buffer->lro_length = length;
881 if (buffer->lro_current_frags != buffer->lro_expected_frags) {
882 if (buffer->lro_expected_frags != 0) {
883 printk("LRO: (refhandle:%x) recv frag. "
884 "wait for last. flags: %x expected:%d "
886 netxen_get_sts_desc_lro_last_frag(desc),
887 buffer->lro_expected_frags,
888 buffer->lro_current_frags);
894 cksum = netxen_get_sts_status(sts_data);
896 skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
900 if (desc_ctx == RCV_DESC_LRO_CTXID) {
901 /* True length was only available on the last pkt */
902 skb_put(skb, buffer->lro_length);
904 if (length > rds_ring->skb_size)
905 skb_put(skb, rds_ring->skb_size);
907 skb_put(skb, length);
909 pkt_offset = netxen_get_sts_pkt_offset(sts_data);
911 skb_pull(skb, pkt_offset);
914 skb->protocol = eth_type_trans(skb, netdev);
917 * rx buffer chaining is disabled, walk and free
918 * any spurious rx buffer chain.
921 u16 i, nr_frags = desc->nr_frags;
923 dev_kfree_skb_any(skb);
924 for (i = 0; i < nr_frags; i++) {
925 index = le16_to_cpu(frag_desc->frag_handles[i]);
926 skb = netxen_process_rxbuf(adapter,
927 rds_ring, index, cksum);
929 dev_kfree_skb_any(skb);
931 adapter->stats.rxdropped++;
933 netif_receive_skb(skb);
935 adapter->stats.no_rcv++;
936 adapter->stats.rxbytes += length;
940 /* Process Receive status ring */
941 u32 netxen_process_rcv_ring(struct netxen_adapter *adapter, int ctxid, int max)
943 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctxid]);
944 struct status_desc *desc_head = recv_ctx->rcv_status_desc_head;
945 struct status_desc *desc, *frag_desc;
946 u32 consumer = recv_ctx->status_rx_consumer;
951 while (count < max) {
952 desc = &desc_head[consumer];
953 if (!(netxen_get_sts_owner(desc) & STATUS_OWNER_HOST)) {
954 DPRINTK(ERR, "desc %p ownedby %x\n", desc,
955 netxen_get_sts_owner(desc));
959 sts_data = le64_to_cpu(desc->status_desc_data);
960 opcode = netxen_get_sts_opcode(sts_data);
962 if (opcode == NETXEN_NIC_RXPKT_DESC) {
963 if (desc->nr_frags) {
964 consumer = get_next_index(consumer,
965 adapter->max_rx_desc_count);
966 frag_desc = &desc_head[consumer];
967 netxen_set_sts_owner(frag_desc,
968 STATUS_OWNER_PHANTOM);
972 netxen_process_rcv(adapter, ctxid, desc, frag_desc);
974 netxen_set_sts_owner(desc, STATUS_OWNER_PHANTOM);
976 consumer = get_next_index(consumer,
977 adapter->max_rx_desc_count);
980 for (ring = 0; ring < adapter->max_rds_rings; ring++)
981 netxen_post_rx_buffers_nodb(adapter, ctxid, ring);
983 /* update the consumer index in phantom */
985 recv_ctx->status_rx_consumer = consumer;
988 adapter->pci_write_normalize(adapter,
989 recv_ctx->crb_sts_consumer, consumer);
995 /* Process Command status ring */
996 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
998 u32 last_consumer, consumer;
1000 struct netxen_cmd_buffer *buffer;
1001 struct pci_dev *pdev = adapter->pdev;
1002 struct net_device *netdev = adapter->netdev;
1003 struct netxen_skb_frag *frag;
1006 last_consumer = adapter->last_cmd_consumer;
1007 consumer = le32_to_cpu(*(adapter->cmd_consumer));
1009 while (last_consumer != consumer) {
1010 buffer = &adapter->cmd_buf_arr[last_consumer];
1012 frag = &buffer->frag_array[0];
1013 pci_unmap_single(pdev, frag->dma, frag->length,
1016 for (i = 1; i < buffer->frag_count; i++) {
1017 frag++; /* Get the next frag */
1018 pci_unmap_page(pdev, frag->dma, frag->length,
1023 adapter->stats.xmitfinished++;
1024 dev_kfree_skb_any(buffer->skb);
1028 last_consumer = get_next_index(last_consumer,
1029 adapter->max_tx_desc_count);
1030 if (++count >= MAX_STATUS_HANDLE)
1035 adapter->last_cmd_consumer = last_consumer;
1037 if (netif_queue_stopped(netdev) && netif_running(netdev)) {
1038 netif_tx_lock(netdev);
1039 netif_wake_queue(netdev);
1041 netif_tx_unlock(netdev);
1045 * If everything is freed up to consumer then check if the ring is full
1046 * If the ring is full then check if more needs to be freed and
1047 * schedule the call back again.
1049 * This happens when there are 2 CPUs. One could be freeing and the
1050 * other filling it. If the ring is full when we get out of here and
1051 * the card has already interrupted the host then the host can miss the
1054 * There is still a possible race condition and the host could miss an
1055 * interrupt. The card has to take care of this.
1057 consumer = le32_to_cpu(*(adapter->cmd_consumer));
1058 done = (last_consumer == consumer);
1064 * netxen_post_rx_buffers puts buffer in the Phantom memory
1066 void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx, u32 ringid)
1068 struct pci_dev *pdev = adapter->pdev;
1069 struct sk_buff *skb;
1070 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
1071 struct nx_host_rds_ring *rds_ring = NULL;
1073 struct rcv_desc *pdesc;
1074 struct netxen_rx_buffer *buffer;
1076 netxen_ctx_msg msg = 0;
1078 struct list_head *head;
1080 rds_ring = &recv_ctx->rds_rings[ringid];
1082 producer = rds_ring->producer;
1083 head = &rds_ring->free_list;
1085 /* We can start writing rx descriptors into the phantom memory. */
1086 while (!list_empty(head)) {
1088 skb = dev_alloc_skb(rds_ring->skb_size);
1089 if (unlikely(!skb)) {
1093 if (!adapter->ahw.cut_through)
1094 skb_reserve(skb, 2);
1096 dma = pci_map_single(pdev, skb->data,
1097 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1098 if (pci_dma_mapping_error(pdev, dma)) {
1099 dev_kfree_skb_any(skb);
1104 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1105 list_del(&buffer->list);
1108 buffer->state = NETXEN_BUFFER_BUSY;
1111 /* make a rcv descriptor */
1112 pdesc = &rds_ring->desc_head[producer];
1113 pdesc->addr_buffer = cpu_to_le64(dma);
1114 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1115 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1117 producer = get_next_index(producer, rds_ring->max_rx_desc_count);
1119 /* if we did allocate buffers, then write the count to Phantom */
1121 rds_ring->producer = producer;
1123 adapter->pci_write_normalize(adapter,
1124 rds_ring->crb_rcv_producer,
1125 (producer-1) & (rds_ring->max_rx_desc_count-1));
1127 if (adapter->fw_major < 4) {
1129 * Write a doorbell msg to tell phanmon of change in
1130 * receive ring producer
1131 * Only for firmware version < 4.0.0
1133 netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1134 netxen_set_msg_privid(msg);
1135 netxen_set_msg_count(msg,
1138 max_rx_desc_count - 1)));
1139 netxen_set_msg_ctxid(msg, adapter->portnum);
1140 netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1142 DB_NORMALIZE(adapter,
1143 NETXEN_RCV_PRODUCER_OFFSET));
1148 static void netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1149 uint32_t ctx, uint32_t ringid)
1151 struct pci_dev *pdev = adapter->pdev;
1152 struct sk_buff *skb;
1153 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
1154 struct nx_host_rds_ring *rds_ring = NULL;
1156 struct rcv_desc *pdesc;
1157 struct netxen_rx_buffer *buffer;
1159 struct list_head *head;
1162 rds_ring = &recv_ctx->rds_rings[ringid];
1164 producer = rds_ring->producer;
1165 head = &rds_ring->free_list;
1166 /* We can start writing rx descriptors into the phantom memory. */
1167 while (!list_empty(head)) {
1169 skb = dev_alloc_skb(rds_ring->skb_size);
1170 if (unlikely(!skb)) {
1174 if (!adapter->ahw.cut_through)
1175 skb_reserve(skb, 2);
1177 dma = pci_map_single(pdev, skb->data,
1178 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1179 if (pci_dma_mapping_error(pdev, dma)) {
1180 dev_kfree_skb_any(skb);
1185 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1186 list_del(&buffer->list);
1189 buffer->state = NETXEN_BUFFER_BUSY;
1192 /* make a rcv descriptor */
1193 pdesc = &rds_ring->desc_head[producer];
1194 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1195 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1196 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1198 producer = get_next_index(producer, rds_ring->max_rx_desc_count);
1201 /* if we did allocate buffers, then write the count to Phantom */
1203 rds_ring->producer = producer;
1205 adapter->pci_write_normalize(adapter,
1206 rds_ring->crb_rcv_producer,
1207 (producer-1) & (rds_ring->max_rx_desc_count-1));
1212 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1214 memset(&adapter->stats, 0, sizeof(adapter->stats));