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
53 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter, 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 recv_ctx = &adapter->recv_ctx;
154 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
155 rds_ring = &recv_ctx->rds_rings[ring];
156 for (i = 0; i < rds_ring->num_desc; ++i) {
157 rx_buf = &(rds_ring->rx_buf_arr[i]);
158 if (rx_buf->state == NETXEN_BUFFER_FREE)
160 pci_unmap_single(adapter->pdev,
164 if (rx_buf->skb != NULL)
165 dev_kfree_skb_any(rx_buf->skb);
170 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
172 struct netxen_cmd_buffer *cmd_buf;
173 struct netxen_skb_frag *buffrag;
176 cmd_buf = adapter->cmd_buf_arr;
177 for (i = 0; i < adapter->num_txd; i++) {
178 buffrag = cmd_buf->frag_array;
180 pci_unmap_single(adapter->pdev, buffrag->dma,
181 buffrag->length, PCI_DMA_TODEVICE);
184 for (j = 0; j < cmd_buf->frag_count; j++) {
187 pci_unmap_page(adapter->pdev, buffrag->dma,
194 dev_kfree_skb_any(cmd_buf->skb);
201 void netxen_free_sw_resources(struct netxen_adapter *adapter)
203 struct netxen_recv_context *recv_ctx;
204 struct nx_host_rds_ring *rds_ring;
207 recv_ctx = &adapter->recv_ctx;
208 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
209 rds_ring = &recv_ctx->rds_rings[ring];
210 if (rds_ring->rx_buf_arr) {
211 vfree(rds_ring->rx_buf_arr);
212 rds_ring->rx_buf_arr = NULL;
216 if (adapter->cmd_buf_arr)
217 vfree(adapter->cmd_buf_arr);
221 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
223 struct netxen_recv_context *recv_ctx;
224 struct nx_host_rds_ring *rds_ring;
225 struct netxen_rx_buffer *rx_buf;
226 int ring, i, num_rx_bufs;
228 struct netxen_cmd_buffer *cmd_buf_arr;
229 struct net_device *netdev = adapter->netdev;
231 cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
232 if (cmd_buf_arr == NULL) {
233 printk(KERN_ERR "%s: Failed to allocate cmd buffer ring\n",
237 memset(cmd_buf_arr, 0, TX_RINGSIZE);
238 adapter->cmd_buf_arr = cmd_buf_arr;
240 recv_ctx = &adapter->recv_ctx;
241 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
242 rds_ring = &recv_ctx->rds_rings[ring];
244 case RCV_RING_NORMAL:
245 rds_ring->num_desc = adapter->num_rxd;
246 if (adapter->ahw.cut_through) {
248 NX_CT_DEFAULT_RX_BUF_LEN;
250 NX_CT_DEFAULT_RX_BUF_LEN;
252 rds_ring->dma_size = RX_DMA_MAP_LEN;
254 MAX_RX_BUFFER_LENGTH;
259 rds_ring->num_desc = adapter->num_jumbo_rxd;
260 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
262 NX_P3_RX_JUMBO_BUF_MAX_LEN;
265 NX_P2_RX_JUMBO_BUF_MAX_LEN;
267 rds_ring->dma_size + NET_IP_ALIGN;
271 rds_ring->num_desc = adapter->num_lro_rxd;
272 rds_ring->dma_size = RX_LRO_DMA_MAP_LEN;
273 rds_ring->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
277 rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
278 vmalloc(RCV_BUFFSIZE);
279 if (rds_ring->rx_buf_arr == NULL) {
280 printk(KERN_ERR "%s: Failed to allocate "
281 "rx buffer ring %d\n",
283 /* free whatever was already allocated */
286 memset(rds_ring->rx_buf_arr, 0, RCV_BUFFSIZE);
287 INIT_LIST_HEAD(&rds_ring->free_list);
289 * Now go through all of them, set reference handles
290 * and put them in the queues.
292 num_rx_bufs = rds_ring->num_desc;
293 rx_buf = rds_ring->rx_buf_arr;
294 for (i = 0; i < num_rx_bufs; i++) {
295 list_add_tail(&rx_buf->list,
296 &rds_ring->free_list);
297 rx_buf->ref_handle = i;
298 rx_buf->state = NETXEN_BUFFER_FREE;
306 netxen_free_sw_resources(adapter);
310 void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
312 switch (adapter->ahw.port_type) {
314 adapter->enable_phy_interrupts =
315 netxen_niu_gbe_enable_phy_interrupts;
316 adapter->disable_phy_interrupts =
317 netxen_niu_gbe_disable_phy_interrupts;
318 adapter->macaddr_set = netxen_niu_macaddr_set;
319 adapter->set_mtu = netxen_nic_set_mtu_gb;
320 adapter->set_promisc = netxen_niu_set_promiscuous_mode;
321 adapter->phy_read = netxen_niu_gbe_phy_read;
322 adapter->phy_write = netxen_niu_gbe_phy_write;
323 adapter->init_port = netxen_niu_gbe_init_port;
324 adapter->stop_port = netxen_niu_disable_gbe_port;
327 case NETXEN_NIC_XGBE:
328 adapter->enable_phy_interrupts =
329 netxen_niu_xgbe_enable_phy_interrupts;
330 adapter->disable_phy_interrupts =
331 netxen_niu_xgbe_disable_phy_interrupts;
332 adapter->macaddr_set = netxen_niu_xg_macaddr_set;
333 adapter->set_mtu = netxen_nic_set_mtu_xgb;
334 adapter->init_port = netxen_niu_xg_init_port;
335 adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
336 adapter->stop_port = netxen_niu_disable_xg_port;
343 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
344 adapter->set_mtu = nx_fw_cmd_set_mtu;
345 adapter->set_promisc = netxen_p3_nic_set_promisc;
350 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
351 * address to external PCI CRB address.
353 static u32 netxen_decode_crb_addr(u32 addr)
356 u32 base_addr, offset, pci_base;
358 crb_addr_transform_setup();
360 pci_base = NETXEN_ADDR_ERROR;
361 base_addr = addr & 0xfff00000;
362 offset = addr & 0x000fffff;
364 for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
365 if (crb_addr_xform[i] == base_addr) {
370 if (pci_base == NETXEN_ADDR_ERROR)
373 return (pci_base + offset);
376 static long rom_max_timeout = 100;
377 static long rom_lock_timeout = 10000;
379 static int rom_lock(struct netxen_adapter *adapter)
386 /* acquire semaphore2 from PCI HW block */
387 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK),
391 if (timeout >= rom_lock_timeout)
401 for (iter = 0; iter < 20; iter++)
402 cpu_relax(); /*This a nop instr on i386 */
405 netxen_nic_reg_write(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
409 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
417 done = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_GLB_STATUS);
420 if (timeout >= rom_max_timeout) {
421 printk("Timeout reached waiting for rom done");
428 static void netxen_rom_unlock(struct netxen_adapter *adapter)
432 /* release semaphore2 */
433 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK), &val);
437 static int do_rom_fast_read(struct netxen_adapter *adapter,
440 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
441 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
442 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
443 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
444 if (netxen_wait_rom_done(adapter)) {
445 printk("Error waiting for rom done\n");
448 /* reset abyte_cnt and dummy_byte_cnt */
449 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
451 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
453 *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
457 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
458 u8 *bytes, size_t size)
463 for (addridx = addr; addridx < (addr + size); addridx += 4) {
465 ret = do_rom_fast_read(adapter, addridx, &v);
468 *(__le32 *)bytes = cpu_to_le32(v);
476 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
477 u8 *bytes, size_t size)
481 ret = rom_lock(adapter);
485 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
487 netxen_rom_unlock(adapter);
491 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
495 if (rom_lock(adapter) != 0)
498 ret = do_rom_fast_read(adapter, addr, valp);
499 netxen_rom_unlock(adapter);
503 #define NETXEN_BOARDTYPE 0x4008
504 #define NETXEN_BOARDNUM 0x400c
505 #define NETXEN_CHIPNUM 0x4010
507 int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
510 int i, n, init_delay = 0;
511 struct crb_addr_pair *buf;
517 netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
519 netxen_rom_unlock(adapter);
522 if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
523 printk("P2 ROM board type: 0x%08x\n", val);
525 printk("Could not read board type\n");
526 if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
527 printk("P2 ROM board num: 0x%08x\n", val);
529 printk("Could not read board number\n");
530 if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
531 printk("P2 ROM chip num: 0x%08x\n", val);
533 printk("Could not read chip number\n");
536 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
537 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
539 netxen_rom_fast_read(adapter, 4, &n) != 0) {
540 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
541 "n: %08x\n", netxen_nic_driver_name, n);
544 offset = n & 0xffffU;
545 n = (n >> 16) & 0xffffU;
547 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
549 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
550 "n: %08x\n", netxen_nic_driver_name, n);
559 printk(KERN_DEBUG "%s: %d CRB init values found"
560 " in ROM.\n", netxen_nic_driver_name, n);
562 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
563 " initialized.\n", __func__, n);
567 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
569 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
570 netxen_nic_driver_name);
573 for (i = 0; i < n; i++) {
574 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
575 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
584 printk(KERN_DEBUG "%s: PCI: 0x%08x == 0x%08x\n",
585 netxen_nic_driver_name,
586 (u32)netxen_decode_crb_addr(addr), val);
588 for (i = 0; i < n; i++) {
590 off = netxen_decode_crb_addr(buf[i].addr);
591 if (off == NETXEN_ADDR_ERROR) {
592 printk(KERN_ERR"CRB init value out of range %x\n",
596 off += NETXEN_PCI_CRBSPACE;
597 /* skipping cold reboot MAGIC */
598 if (off == NETXEN_CAM_RAM(0x1fc))
601 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
602 /* do not reset PCI */
603 if (off == (ROMUSB_GLB + 0xbc))
605 if (off == (ROMUSB_GLB + 0xa8))
607 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
609 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
611 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
613 if (off == (NETXEN_CRB_PEG_NET_1 + 0x18))
614 buf[i].data = 0x1020;
615 /* skip the function enable register */
616 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
618 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
620 if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
624 if (off == NETXEN_ADDR_ERROR) {
625 printk(KERN_ERR "%s: Err: Unknown addr: 0x%08x\n",
626 netxen_nic_driver_name, buf[i].addr);
631 /* After writing this register, HW needs time for CRB */
632 /* to quiet down (else crb_window returns 0xffffffff) */
633 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
635 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
636 /* hold xdma in reset also */
637 buf[i].data = NETXEN_NIC_XDMA_RESET;
638 buf[i].data = 0x8000ff;
642 adapter->hw_write_wx(adapter, off, &buf[i].data, 4);
648 /* disable_peg_cache_all */
650 /* unreset_net_cache */
651 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
652 adapter->hw_read_wx(adapter,
653 NETXEN_ROMUSB_GLB_SW_RESET, &val, 4);
654 netxen_crb_writelit_adapter(adapter,
655 NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
658 /* p2dn replyCount */
659 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
660 /* disable_peg_cache 0 */
661 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
662 /* disable_peg_cache 1 */
663 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
668 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
669 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
671 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
672 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
674 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
675 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
677 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
678 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
682 int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
688 adapter->dummy_dma.addr =
689 pci_alloc_consistent(adapter->pdev,
690 NETXEN_HOST_DUMMY_DMA_SIZE,
691 &adapter->dummy_dma.phys_addr);
692 if (adapter->dummy_dma.addr == NULL) {
693 printk("%s: ERROR: Could not allocate dummy DMA memory\n",
698 addr = (uint64_t) adapter->dummy_dma.phys_addr;
699 hi = (addr >> 32) & 0xffffffff;
700 lo = addr & 0xffffffff;
702 adapter->pci_write_normalize(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
703 adapter->pci_write_normalize(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
705 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
707 adapter->hw_write_wx(adapter, CRB_HOST_DUMMY_BUF, &temp, 4);
713 void netxen_free_adapter_offload(struct netxen_adapter *adapter)
717 if (!adapter->dummy_dma.addr)
720 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
722 if (dma_watchdog_shutdown_request(adapter) == 1)
725 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
731 pci_free_consistent(adapter->pdev,
732 NETXEN_HOST_DUMMY_DMA_SIZE,
733 adapter->dummy_dma.addr,
734 adapter->dummy_dma.phys_addr);
735 adapter->dummy_dma.addr = NULL;
737 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
738 adapter->netdev->name);
742 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
749 val = adapter->pci_read_normalize(adapter,
752 if (val == PHAN_INITIALIZE_COMPLETE ||
753 val == PHAN_INITIALIZE_ACK)
761 pegtune_val = adapter->pci_read_normalize(adapter,
762 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
763 printk(KERN_WARNING "netxen_phantom_init: init failed, "
764 "pegtune_val=%x\n", pegtune_val);
772 int netxen_receive_peg_ready(struct netxen_adapter *adapter)
778 val = adapter->pci_read_normalize(adapter, CRB_RCVPEG_STATE);
780 if (val == PHAN_PEG_RCV_INITIALIZED)
788 printk(KERN_ERR "Receive Peg initialization not "
789 "complete, state: 0x%x.\n", val);
796 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
797 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
799 struct netxen_rx_buffer *buffer;
802 buffer = &rds_ring->rx_buf_arr[index];
804 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
811 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
812 adapter->stats.csummed++;
813 skb->ip_summed = CHECKSUM_UNNECESSARY;
815 skb->ip_summed = CHECKSUM_NONE;
817 skb->dev = adapter->netdev;
822 buffer->state = NETXEN_BUFFER_FREE;
823 list_add_tail(&buffer->list, &rds_ring->free_list);
828 netxen_process_rcv(struct netxen_adapter *adapter,
829 int ring, int index, int length, int cksum, int pkt_offset)
831 struct net_device *netdev = adapter->netdev;
832 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
833 struct netxen_rx_buffer *buffer;
835 struct nx_host_rds_ring *rds_ring = &recv_ctx->rds_rings[ring];
837 if (unlikely(index > rds_ring->num_desc))
840 buffer = &rds_ring->rx_buf_arr[index];
842 skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
846 if (length > rds_ring->skb_size)
847 skb_put(skb, rds_ring->skb_size);
849 skb_put(skb, length);
853 skb_pull(skb, pkt_offset);
855 skb->protocol = eth_type_trans(skb, netdev);
857 netif_receive_skb(skb);
859 adapter->stats.no_rcv++;
860 adapter->stats.rxbytes += length;
864 netxen_process_rcv_ring(struct netxen_adapter *adapter, int max)
866 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
867 struct status_desc *desc_head = recv_ctx->rcv_status_desc_head;
868 struct status_desc *desc;
869 u32 consumer = recv_ctx->status_rx_consumer;
872 int opcode, ring, index, length, cksum, pkt_offset;
874 while (count < max) {
875 desc = &desc_head[consumer];
876 sts_data = le64_to_cpu(desc->status_desc_data);
878 if (!(sts_data & STATUS_OWNER_HOST))
881 ring = netxen_get_sts_type(sts_data);
882 if (ring > RCV_RING_JUMBO)
885 opcode = netxen_get_sts_opcode(sts_data);
887 index = netxen_get_sts_refhandle(sts_data);
888 length = netxen_get_sts_totallength(sts_data);
889 cksum = netxen_get_sts_status(sts_data);
890 pkt_offset = netxen_get_sts_pkt_offset(sts_data);
892 netxen_process_rcv(adapter, ring, index,
893 length, cksum, pkt_offset);
895 desc->status_desc_data = cpu_to_le64(STATUS_OWNER_PHANTOM);
897 consumer = get_next_index(consumer, adapter->num_rxd);
901 for (ring = 0; ring < adapter->max_rds_rings; ring++)
902 netxen_post_rx_buffers_nodb(adapter, ring);
905 recv_ctx->status_rx_consumer = consumer;
906 adapter->pci_write_normalize(adapter,
907 recv_ctx->crb_sts_consumer, consumer);
913 /* Process Command status ring */
914 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
916 u32 last_consumer, consumer;
918 struct netxen_cmd_buffer *buffer;
919 struct pci_dev *pdev = adapter->pdev;
920 struct net_device *netdev = adapter->netdev;
921 struct netxen_skb_frag *frag;
924 last_consumer = adapter->last_cmd_consumer;
925 barrier(); /* cmd_consumer can change underneath */
926 consumer = le32_to_cpu(*(adapter->cmd_consumer));
928 while (last_consumer != consumer) {
929 buffer = &adapter->cmd_buf_arr[last_consumer];
931 frag = &buffer->frag_array[0];
932 pci_unmap_single(pdev, frag->dma, frag->length,
935 for (i = 1; i < buffer->frag_count; i++) {
936 frag++; /* Get the next frag */
937 pci_unmap_page(pdev, frag->dma, frag->length,
942 adapter->stats.xmitfinished++;
943 dev_kfree_skb_any(buffer->skb);
947 last_consumer = get_next_index(last_consumer,
949 if (++count >= MAX_STATUS_HANDLE)
954 adapter->last_cmd_consumer = last_consumer;
956 if (netif_queue_stopped(netdev) && netif_running(netdev)) {
957 netif_tx_lock(netdev);
958 netif_wake_queue(netdev);
960 netif_tx_unlock(netdev);
964 * If everything is freed up to consumer then check if the ring is full
965 * If the ring is full then check if more needs to be freed and
966 * schedule the call back again.
968 * This happens when there are 2 CPUs. One could be freeing and the
969 * other filling it. If the ring is full when we get out of here and
970 * the card has already interrupted the host then the host can miss the
973 * There is still a possible race condition and the host could miss an
974 * interrupt. The card has to take care of this.
976 barrier(); /* cmd_consumer can change underneath */
977 consumer = le32_to_cpu(*(adapter->cmd_consumer));
978 done = (last_consumer == consumer);
984 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid)
986 struct pci_dev *pdev = adapter->pdev;
988 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
989 struct nx_host_rds_ring *rds_ring = NULL;
991 struct rcv_desc *pdesc;
992 struct netxen_rx_buffer *buffer;
994 netxen_ctx_msg msg = 0;
996 struct list_head *head;
998 rds_ring = &recv_ctx->rds_rings[ringid];
1000 producer = rds_ring->producer;
1001 head = &rds_ring->free_list;
1003 while (!list_empty(head)) {
1005 skb = dev_alloc_skb(rds_ring->skb_size);
1006 if (unlikely(!skb)) {
1010 if (!adapter->ahw.cut_through)
1011 skb_reserve(skb, 2);
1013 dma = pci_map_single(pdev, skb->data,
1014 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1015 if (pci_dma_mapping_error(pdev, dma)) {
1016 dev_kfree_skb_any(skb);
1021 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1022 list_del(&buffer->list);
1025 buffer->state = NETXEN_BUFFER_BUSY;
1028 /* make a rcv descriptor */
1029 pdesc = &rds_ring->desc_head[producer];
1030 pdesc->addr_buffer = cpu_to_le64(dma);
1031 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1032 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1034 producer = get_next_index(producer, rds_ring->num_desc);
1038 rds_ring->producer = producer;
1039 adapter->pci_write_normalize(adapter,
1040 rds_ring->crb_rcv_producer,
1041 (producer-1) & (rds_ring->num_desc-1));
1043 if (adapter->fw_major < 4) {
1045 * Write a doorbell msg to tell phanmon of change in
1046 * receive ring producer
1047 * Only for firmware version < 4.0.0
1049 netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1050 netxen_set_msg_privid(msg);
1051 netxen_set_msg_count(msg,
1053 (rds_ring->num_desc - 1)));
1054 netxen_set_msg_ctxid(msg, adapter->portnum);
1055 netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1057 DB_NORMALIZE(adapter,
1058 NETXEN_RCV_PRODUCER_OFFSET));
1064 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter, uint32_t ringid)
1066 struct pci_dev *pdev = adapter->pdev;
1067 struct sk_buff *skb;
1068 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1069 struct nx_host_rds_ring *rds_ring = NULL;
1071 struct rcv_desc *pdesc;
1072 struct netxen_rx_buffer *buffer;
1074 struct list_head *head;
1077 rds_ring = &recv_ctx->rds_rings[ringid];
1079 producer = rds_ring->producer;
1080 head = &rds_ring->free_list;
1081 while (!list_empty(head)) {
1083 skb = dev_alloc_skb(rds_ring->skb_size);
1084 if (unlikely(!skb)) {
1088 if (!adapter->ahw.cut_through)
1089 skb_reserve(skb, 2);
1091 dma = pci_map_single(pdev, skb->data,
1092 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1093 if (pci_dma_mapping_error(pdev, dma)) {
1094 dev_kfree_skb_any(skb);
1099 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1100 list_del(&buffer->list);
1103 buffer->state = NETXEN_BUFFER_BUSY;
1106 /* make a rcv descriptor */
1107 pdesc = &rds_ring->desc_head[producer];
1108 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1109 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1110 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1112 producer = get_next_index(producer, rds_ring->num_desc);
1116 rds_ring->producer = producer;
1117 adapter->pci_write_normalize(adapter,
1118 rds_ring->crb_rcv_producer,
1119 (producer - 1) & (rds_ring->num_desc - 1));
1124 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1126 memset(&adapter->stats, 0, sizeof(adapter->stats));