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 (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
55 static void netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
56 uint32_t ctx, uint32_t ringid);
59 static void netxen_nic_locked_write_reg(struct netxen_adapter *adapter,
60 unsigned long off, int *data)
62 void __iomem *addr = pci_base_offset(adapter, off);
67 static void crb_addr_transform_setup(void)
69 crb_addr_transform(XDMA);
70 crb_addr_transform(TIMR);
71 crb_addr_transform(SRE);
72 crb_addr_transform(SQN3);
73 crb_addr_transform(SQN2);
74 crb_addr_transform(SQN1);
75 crb_addr_transform(SQN0);
76 crb_addr_transform(SQS3);
77 crb_addr_transform(SQS2);
78 crb_addr_transform(SQS1);
79 crb_addr_transform(SQS0);
80 crb_addr_transform(RPMX7);
81 crb_addr_transform(RPMX6);
82 crb_addr_transform(RPMX5);
83 crb_addr_transform(RPMX4);
84 crb_addr_transform(RPMX3);
85 crb_addr_transform(RPMX2);
86 crb_addr_transform(RPMX1);
87 crb_addr_transform(RPMX0);
88 crb_addr_transform(ROMUSB);
89 crb_addr_transform(SN);
90 crb_addr_transform(QMN);
91 crb_addr_transform(QMS);
92 crb_addr_transform(PGNI);
93 crb_addr_transform(PGND);
94 crb_addr_transform(PGN3);
95 crb_addr_transform(PGN2);
96 crb_addr_transform(PGN1);
97 crb_addr_transform(PGN0);
98 crb_addr_transform(PGSI);
99 crb_addr_transform(PGSD);
100 crb_addr_transform(PGS3);
101 crb_addr_transform(PGS2);
102 crb_addr_transform(PGS1);
103 crb_addr_transform(PGS0);
104 crb_addr_transform(PS);
105 crb_addr_transform(PH);
106 crb_addr_transform(NIU);
107 crb_addr_transform(I2Q);
108 crb_addr_transform(EG);
109 crb_addr_transform(MN);
110 crb_addr_transform(MS);
111 crb_addr_transform(CAS2);
112 crb_addr_transform(CAS1);
113 crb_addr_transform(CAS0);
114 crb_addr_transform(CAM);
115 crb_addr_transform(C2C1);
116 crb_addr_transform(C2C0);
117 crb_addr_transform(SMB);
118 crb_addr_transform(OCM0);
119 crb_addr_transform(I2C0);
122 int netxen_init_firmware(struct netxen_adapter *adapter)
124 u32 state = 0, loops = 0, err = 0;
127 state = adapter->pci_read_normalize(adapter, CRB_CMDPEG_STATE);
129 if (state == PHAN_INITIALIZE_ACK)
132 while (state != PHAN_INITIALIZE_COMPLETE && loops < 2000) {
135 state = adapter->pci_read_normalize(adapter, CRB_CMDPEG_STATE);
140 printk(KERN_ERR "Cmd Peg initialization not complete:%x.\n",
146 adapter->pci_write_normalize(adapter,
147 CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
148 adapter->pci_write_normalize(adapter,
149 CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
150 adapter->pci_write_normalize(adapter,
151 CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
152 adapter->pci_write_normalize(adapter,
153 CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
158 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
160 struct netxen_recv_context *recv_ctx;
161 struct nx_host_rds_ring *rds_ring;
162 struct netxen_rx_buffer *rx_buf;
165 for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
166 recv_ctx = &adapter->recv_ctx[ctxid];
167 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
168 rds_ring = &recv_ctx->rds_rings[ring];
169 for (i = 0; i < rds_ring->max_rx_desc_count; ++i) {
170 rx_buf = &(rds_ring->rx_buf_arr[i]);
171 if (rx_buf->state == NETXEN_BUFFER_FREE)
173 pci_unmap_single(adapter->pdev,
177 if (rx_buf->skb != NULL)
178 dev_kfree_skb_any(rx_buf->skb);
184 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
186 struct netxen_cmd_buffer *cmd_buf;
187 struct netxen_skb_frag *buffrag;
190 cmd_buf = adapter->cmd_buf_arr;
191 for (i = 0; i < adapter->max_tx_desc_count; i++) {
192 buffrag = cmd_buf->frag_array;
194 pci_unmap_single(adapter->pdev, buffrag->dma,
195 buffrag->length, PCI_DMA_TODEVICE);
198 for (j = 0; j < cmd_buf->frag_count; j++) {
201 pci_unmap_page(adapter->pdev, buffrag->dma,
207 /* Free the skb we received in netxen_nic_xmit_frame */
209 dev_kfree_skb_any(cmd_buf->skb);
216 void netxen_free_sw_resources(struct netxen_adapter *adapter)
218 struct netxen_recv_context *recv_ctx;
219 struct nx_host_rds_ring *rds_ring;
222 for (ctx = 0; ctx < MAX_RCV_CTX; ctx++) {
223 recv_ctx = &adapter->recv_ctx[ctx];
224 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
225 rds_ring = &recv_ctx->rds_rings[ring];
226 if (rds_ring->rx_buf_arr) {
227 vfree(rds_ring->rx_buf_arr);
228 rds_ring->rx_buf_arr = NULL;
232 if (adapter->cmd_buf_arr)
233 vfree(adapter->cmd_buf_arr);
237 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
239 struct netxen_recv_context *recv_ctx;
240 struct nx_host_rds_ring *rds_ring;
241 struct netxen_rx_buffer *rx_buf;
242 int ctx, ring, i, num_rx_bufs;
244 struct netxen_cmd_buffer *cmd_buf_arr;
245 struct net_device *netdev = adapter->netdev;
247 cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
248 if (cmd_buf_arr == NULL) {
249 printk(KERN_ERR "%s: Failed to allocate cmd buffer ring\n",
253 memset(cmd_buf_arr, 0, TX_RINGSIZE);
254 adapter->cmd_buf_arr = cmd_buf_arr;
256 for (ctx = 0; ctx < MAX_RCV_CTX; ctx++) {
257 recv_ctx = &adapter->recv_ctx[ctx];
258 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
259 rds_ring = &recv_ctx->rds_rings[ring];
260 switch (RCV_DESC_TYPE(ring)) {
261 case RCV_DESC_NORMAL:
262 rds_ring->max_rx_desc_count =
263 adapter->max_rx_desc_count;
264 rds_ring->flags = RCV_DESC_NORMAL;
265 if (adapter->ahw.cut_through) {
267 NX_CT_DEFAULT_RX_BUF_LEN;
269 NX_CT_DEFAULT_RX_BUF_LEN;
271 rds_ring->dma_size = RX_DMA_MAP_LEN;
273 MAX_RX_BUFFER_LENGTH;
278 rds_ring->max_rx_desc_count =
279 adapter->max_jumbo_rx_desc_count;
280 rds_ring->flags = RCV_DESC_JUMBO;
281 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
283 NX_P3_RX_JUMBO_BUF_MAX_LEN;
286 NX_P2_RX_JUMBO_BUF_MAX_LEN;
288 rds_ring->dma_size + NET_IP_ALIGN;
292 rds_ring->max_rx_desc_count =
293 adapter->max_lro_rx_desc_count;
294 rds_ring->flags = RCV_DESC_LRO;
295 rds_ring->dma_size = RX_LRO_DMA_MAP_LEN;
296 rds_ring->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
300 rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
301 vmalloc(RCV_BUFFSIZE);
302 if (rds_ring->rx_buf_arr == NULL) {
303 printk(KERN_ERR "%s: Failed to allocate "
304 "rx buffer ring %d\n",
306 /* free whatever was already allocated */
309 memset(rds_ring->rx_buf_arr, 0, RCV_BUFFSIZE);
310 INIT_LIST_HEAD(&rds_ring->free_list);
311 rds_ring->begin_alloc = 0;
313 * Now go through all of them, set reference handles
314 * and put them in the queues.
316 num_rx_bufs = rds_ring->max_rx_desc_count;
317 rx_buf = rds_ring->rx_buf_arr;
318 for (i = 0; i < num_rx_bufs; i++) {
319 list_add_tail(&rx_buf->list,
320 &rds_ring->free_list);
321 rx_buf->ref_handle = i;
322 rx_buf->state = NETXEN_BUFFER_FREE;
331 netxen_free_sw_resources(adapter);
335 void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
337 switch (adapter->ahw.board_type) {
339 adapter->enable_phy_interrupts =
340 netxen_niu_gbe_enable_phy_interrupts;
341 adapter->disable_phy_interrupts =
342 netxen_niu_gbe_disable_phy_interrupts;
343 adapter->macaddr_set = netxen_niu_macaddr_set;
344 adapter->set_mtu = netxen_nic_set_mtu_gb;
345 adapter->set_promisc = netxen_niu_set_promiscuous_mode;
346 adapter->phy_read = netxen_niu_gbe_phy_read;
347 adapter->phy_write = netxen_niu_gbe_phy_write;
348 adapter->init_port = netxen_niu_gbe_init_port;
349 adapter->stop_port = netxen_niu_disable_gbe_port;
352 case NETXEN_NIC_XGBE:
353 adapter->enable_phy_interrupts =
354 netxen_niu_xgbe_enable_phy_interrupts;
355 adapter->disable_phy_interrupts =
356 netxen_niu_xgbe_disable_phy_interrupts;
357 adapter->macaddr_set = netxen_niu_xg_macaddr_set;
358 adapter->set_mtu = netxen_nic_set_mtu_xgb;
359 adapter->init_port = netxen_niu_xg_init_port;
360 adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
361 adapter->stop_port = netxen_niu_disable_xg_port;
368 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
369 adapter->set_mtu = nx_fw_cmd_set_mtu;
370 adapter->set_promisc = netxen_p3_nic_set_promisc;
375 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
376 * address to external PCI CRB address.
378 static u32 netxen_decode_crb_addr(u32 addr)
381 u32 base_addr, offset, pci_base;
383 crb_addr_transform_setup();
385 pci_base = NETXEN_ADDR_ERROR;
386 base_addr = addr & 0xfff00000;
387 offset = addr & 0x000fffff;
389 for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
390 if (crb_addr_xform[i] == base_addr) {
395 if (pci_base == NETXEN_ADDR_ERROR)
398 return (pci_base + offset);
401 static long rom_max_timeout = 100;
402 static long rom_lock_timeout = 10000;
404 static long rom_write_timeout = 700;
407 static int rom_lock(struct netxen_adapter *adapter)
414 /* acquire semaphore2 from PCI HW block */
415 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK),
419 if (timeout >= rom_lock_timeout)
429 for (iter = 0; iter < 20; iter++)
430 cpu_relax(); /*This a nop instr on i386 */
433 netxen_nic_reg_write(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
437 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
443 done = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_GLB_STATUS);
446 if (timeout >= rom_max_timeout) {
447 printk("Timeout reached waiting for rom done");
455 static int netxen_rom_wren(struct netxen_adapter *adapter)
457 /* Set write enable latch in ROM status register */
458 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
459 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
461 if (netxen_wait_rom_done(adapter)) {
467 static unsigned int netxen_rdcrbreg(struct netxen_adapter *adapter,
470 unsigned int data = 0xdeaddead;
471 data = netxen_nic_reg_read(adapter, addr);
475 static int netxen_do_rom_rdsr(struct netxen_adapter *adapter)
477 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
479 if (netxen_wait_rom_done(adapter)) {
482 return netxen_rdcrbreg(adapter, NETXEN_ROMUSB_ROM_RDATA);
486 static void netxen_rom_unlock(struct netxen_adapter *adapter)
490 /* release semaphore2 */
491 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK), &val);
496 static int netxen_rom_wip_poll(struct netxen_adapter *adapter)
501 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
503 val = netxen_do_rom_rdsr(adapter);
506 if (timeout > rom_max_timeout) {
513 static int do_rom_fast_write(struct netxen_adapter *adapter, int addr,
516 if (netxen_rom_wren(adapter)) {
519 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_WDATA, data);
520 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
521 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
522 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
524 if (netxen_wait_rom_done(adapter)) {
525 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
529 return netxen_rom_wip_poll(adapter);
533 static int do_rom_fast_read(struct netxen_adapter *adapter,
538 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
539 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
540 udelay(100); /* prevent bursting on CRB */
541 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
542 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
543 if (netxen_wait_rom_done(adapter)) {
544 printk("Error waiting for rom done\n");
547 /* reset abyte_cnt and dummy_byte_cnt */
548 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
549 udelay(100); /* prevent bursting on CRB */
550 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
552 *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
556 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
557 u8 *bytes, size_t size)
562 for (addridx = addr; addridx < (addr + size); addridx += 4) {
564 ret = do_rom_fast_read(adapter, addridx, &v);
567 *(__le32 *)bytes = cpu_to_le32(v);
575 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
576 u8 *bytes, size_t size)
580 ret = rom_lock(adapter);
584 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
586 netxen_rom_unlock(adapter);
590 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
594 if (rom_lock(adapter) != 0)
597 ret = do_rom_fast_read(adapter, addr, valp);
598 netxen_rom_unlock(adapter);
603 int netxen_rom_fast_write(struct netxen_adapter *adapter, int addr, int data)
607 if (rom_lock(adapter) != 0) {
610 ret = do_rom_fast_write(adapter, addr, data);
611 netxen_rom_unlock(adapter);
615 static int do_rom_fast_write_words(struct netxen_adapter *adapter,
616 int addr, u8 *bytes, size_t size)
621 while (addridx < (addr + size)) {
622 int last_attempt = 0;
626 data = le32_to_cpu((*(__le32*)bytes));
627 ret = do_rom_fast_write(adapter, addridx, data);
634 ret = do_rom_fast_read(adapter, addridx, &data1);
641 if (timeout++ >= rom_write_timeout) {
642 if (last_attempt++ < 4) {
643 ret = do_rom_fast_write(adapter,
649 printk(KERN_INFO "Data write did not "
650 "succeed at address 0x%x\n", addridx);
663 int netxen_rom_fast_write_words(struct netxen_adapter *adapter, int addr,
664 u8 *bytes, size_t size)
668 ret = rom_lock(adapter);
672 ret = do_rom_fast_write_words(adapter, addr, bytes, size);
673 netxen_rom_unlock(adapter);
678 static int netxen_rom_wrsr(struct netxen_adapter *adapter, int data)
682 ret = netxen_rom_wren(adapter);
686 netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_ROM_WDATA, data);
687 netxen_crb_writelit_adapter(adapter,
688 NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0x1);
690 ret = netxen_wait_rom_done(adapter);
694 return netxen_rom_wip_poll(adapter);
697 static int netxen_rom_rdsr(struct netxen_adapter *adapter)
701 ret = rom_lock(adapter);
705 ret = netxen_do_rom_rdsr(adapter);
706 netxen_rom_unlock(adapter);
710 int netxen_backup_crbinit(struct netxen_adapter *adapter)
712 int ret = FLASH_SUCCESS;
714 char *buffer = kmalloc(NETXEN_FLASH_SECTOR_SIZE, GFP_KERNEL);
718 /* unlock sector 63 */
719 val = netxen_rom_rdsr(adapter);
721 ret = netxen_rom_wrsr(adapter, val);
722 if (ret != FLASH_SUCCESS)
725 ret = netxen_rom_wip_poll(adapter);
726 if (ret != FLASH_SUCCESS)
729 /* copy sector 0 to sector 63 */
730 ret = netxen_rom_fast_read_words(adapter, NETXEN_CRBINIT_START,
731 buffer, NETXEN_FLASH_SECTOR_SIZE);
732 if (ret != FLASH_SUCCESS)
735 ret = netxen_rom_fast_write_words(adapter, NETXEN_FIXED_START,
736 buffer, NETXEN_FLASH_SECTOR_SIZE);
737 if (ret != FLASH_SUCCESS)
741 val = netxen_rom_rdsr(adapter);
745 if (netxen_rom_wrsr(adapter, val) == 0) {
746 ret = netxen_rom_wip_poll(adapter);
747 if (ret != FLASH_SUCCESS)
751 ret = netxen_rom_wip_poll(adapter);
752 if (ret != FLASH_SUCCESS)
762 static int netxen_do_rom_se(struct netxen_adapter *adapter, int addr)
764 netxen_rom_wren(adapter);
765 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
766 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
767 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
769 if (netxen_wait_rom_done(adapter)) {
770 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
773 return netxen_rom_wip_poll(adapter);
776 static void check_erased_flash(struct netxen_adapter *adapter, int addr)
780 int count = 0, erased_errors = 0;
783 range = (addr == NETXEN_USER_START) ?
784 NETXEN_FIXED_START : addr + NETXEN_FLASH_SECTOR_SIZE;
786 for (i = addr; i < range; i += 4) {
787 netxen_rom_fast_read(adapter, i, &val);
788 if (val != 0xffffffff)
794 printk(KERN_INFO "0x%x out of 0x%x words fail to be erased "
795 "for sector address: %x\n", erased_errors, count, addr);
798 int netxen_rom_se(struct netxen_adapter *adapter, int addr)
801 if (rom_lock(adapter) != 0) {
804 ret = netxen_do_rom_se(adapter, addr);
805 netxen_rom_unlock(adapter);
807 check_erased_flash(adapter, addr);
812 static int netxen_flash_erase_sections(struct netxen_adapter *adapter,
815 int ret = FLASH_SUCCESS;
818 for (i = start; i < end; i++) {
819 ret = netxen_rom_se(adapter, i * NETXEN_FLASH_SECTOR_SIZE);
822 ret = netxen_rom_wip_poll(adapter);
831 netxen_flash_erase_secondary(struct netxen_adapter *adapter)
833 int ret = FLASH_SUCCESS;
836 start = NETXEN_SECONDARY_START / NETXEN_FLASH_SECTOR_SIZE;
837 end = NETXEN_USER_START / NETXEN_FLASH_SECTOR_SIZE;
838 ret = netxen_flash_erase_sections(adapter, start, end);
844 netxen_flash_erase_primary(struct netxen_adapter *adapter)
846 int ret = FLASH_SUCCESS;
849 start = NETXEN_PRIMARY_START / NETXEN_FLASH_SECTOR_SIZE;
850 end = NETXEN_SECONDARY_START / NETXEN_FLASH_SECTOR_SIZE;
851 ret = netxen_flash_erase_sections(adapter, start, end);
856 void netxen_halt_pegs(struct netxen_adapter *adapter)
858 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c, 1);
859 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c, 1);
860 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c, 1);
861 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c, 1);
864 int netxen_flash_unlock(struct netxen_adapter *adapter)
868 ret = netxen_rom_wrsr(adapter, 0);
872 ret = netxen_rom_wren(adapter);
880 #define NETXEN_BOARDTYPE 0x4008
881 #define NETXEN_BOARDNUM 0x400c
882 #define NETXEN_CHIPNUM 0x4010
884 int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
887 int i, init_delay = 0;
888 struct crb_addr_pair *buf;
893 netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
897 if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
898 printk("P2 ROM board type: 0x%08x\n", val);
900 printk("Could not read board type\n");
901 if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
902 printk("P2 ROM board num: 0x%08x\n", val);
904 printk("Could not read board number\n");
905 if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
906 printk("P2 ROM chip num: 0x%08x\n", val);
908 printk("Could not read chip number\n");
911 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
912 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
913 (n != 0xcafecafeUL) ||
914 netxen_rom_fast_read(adapter, 4, &n) != 0) {
915 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
916 "n: %08x\n", netxen_nic_driver_name, n);
919 offset = n & 0xffffU;
920 n = (n >> 16) & 0xffffU;
922 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
924 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
925 "n: %08x\n", netxen_nic_driver_name, n);
934 printk(KERN_DEBUG "%s: %d CRB init values found"
935 " in ROM.\n", netxen_nic_driver_name, n);
937 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
938 " initialized.\n", __func__, n);
942 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
944 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
945 netxen_nic_driver_name);
948 for (i = 0; i < n; i++) {
949 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
950 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0)
957 printk(KERN_DEBUG "%s: PCI: 0x%08x == 0x%08x\n",
958 netxen_nic_driver_name,
959 (u32)netxen_decode_crb_addr(addr), val);
961 for (i = 0; i < n; i++) {
963 off = netxen_decode_crb_addr(buf[i].addr);
964 if (off == NETXEN_ADDR_ERROR) {
965 printk(KERN_ERR"CRB init value out of range %x\n",
969 off += NETXEN_PCI_CRBSPACE;
970 /* skipping cold reboot MAGIC */
971 if (off == NETXEN_CAM_RAM(0x1fc))
974 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
975 /* do not reset PCI */
976 if (off == (ROMUSB_GLB + 0xbc))
978 if (off == (NETXEN_CRB_PEG_NET_1 + 0x18))
979 buf[i].data = 0x1020;
980 /* skip the function enable register */
981 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
983 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
985 if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
989 if (off == NETXEN_ADDR_ERROR) {
990 printk(KERN_ERR "%s: Err: Unknown addr: 0x%08x\n",
991 netxen_nic_driver_name, buf[i].addr);
995 /* After writing this register, HW needs time for CRB */
996 /* to quiet down (else crb_window returns 0xffffffff) */
997 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
999 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1000 /* hold xdma in reset also */
1001 buf[i].data = NETXEN_NIC_XDMA_RESET;
1005 adapter->hw_write_wx(adapter, off, &buf[i].data, 4);
1007 if (init_delay == 1) {
1015 /* disable_peg_cache_all */
1017 /* unreset_net_cache */
1018 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1019 adapter->hw_read_wx(adapter,
1020 NETXEN_ROMUSB_GLB_SW_RESET, &val, 4);
1021 netxen_crb_writelit_adapter(adapter,
1022 NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
1025 /* p2dn replyCount */
1026 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
1027 /* disable_peg_cache 0 */
1028 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
1029 /* disable_peg_cache 1 */
1030 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
1035 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
1036 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
1038 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
1039 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
1041 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
1042 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
1044 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
1045 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
1049 int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
1055 adapter->dummy_dma.addr =
1056 pci_alloc_consistent(adapter->pdev,
1057 NETXEN_HOST_DUMMY_DMA_SIZE,
1058 &adapter->dummy_dma.phys_addr);
1059 if (adapter->dummy_dma.addr == NULL) {
1060 printk("%s: ERROR: Could not allocate dummy DMA memory\n",
1065 addr = (uint64_t) adapter->dummy_dma.phys_addr;
1066 hi = (addr >> 32) & 0xffffffff;
1067 lo = addr & 0xffffffff;
1069 adapter->pci_write_normalize(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1070 adapter->pci_write_normalize(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1072 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1074 adapter->hw_write_wx(adapter, CRB_HOST_DUMMY_BUF, &temp, 4);
1080 void netxen_free_adapter_offload(struct netxen_adapter *adapter)
1084 if (!adapter->dummy_dma.addr)
1087 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1089 if (dma_watchdog_shutdown_request(adapter) == 1)
1092 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
1098 pci_free_consistent(adapter->pdev,
1099 NETXEN_HOST_DUMMY_DMA_SIZE,
1100 adapter->dummy_dma.addr,
1101 adapter->dummy_dma.phys_addr);
1102 adapter->dummy_dma.addr = NULL;
1104 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
1105 adapter->netdev->name);
1109 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1116 val = adapter->pci_read_normalize(adapter,
1119 if (val == PHAN_INITIALIZE_COMPLETE ||
1120 val == PHAN_INITIALIZE_ACK)
1125 } while (--retries);
1128 pegtune_val = adapter->pci_read_normalize(adapter,
1129 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
1130 printk(KERN_WARNING "netxen_phantom_init: init failed, "
1131 "pegtune_val=%x\n", pegtune_val);
1139 int netxen_receive_peg_ready(struct netxen_adapter *adapter)
1145 val = adapter->pci_read_normalize(adapter, CRB_RCVPEG_STATE);
1147 if (val == PHAN_PEG_RCV_INITIALIZED)
1152 } while (--retries);
1155 printk(KERN_ERR "Receive Peg initialization not "
1156 "complete, state: 0x%x.\n", val);
1163 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1164 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1166 struct netxen_rx_buffer *buffer;
1167 struct sk_buff *skb;
1169 buffer = &rds_ring->rx_buf_arr[index];
1171 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1172 PCI_DMA_FROMDEVICE);
1178 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1179 adapter->stats.csummed++;
1180 skb->ip_summed = CHECKSUM_UNNECESSARY;
1182 skb->ip_summed = CHECKSUM_NONE;
1184 skb->dev = adapter->netdev;
1189 buffer->state = NETXEN_BUFFER_FREE;
1190 buffer->lro_current_frags = 0;
1191 buffer->lro_expected_frags = 0;
1192 list_add_tail(&buffer->list, &rds_ring->free_list);
1197 * netxen_process_rcv() send the received packet to the protocol stack.
1198 * and if the number of receives exceeds RX_BUFFERS_REFILL, then we
1199 * invoke the routine to send more rx buffers to the Phantom...
1201 static void netxen_process_rcv(struct netxen_adapter *adapter, int ctxid,
1202 struct status_desc *desc, struct status_desc *frag_desc)
1204 struct net_device *netdev = adapter->netdev;
1205 u64 sts_data = le64_to_cpu(desc->status_desc_data);
1206 int index = netxen_get_sts_refhandle(sts_data);
1207 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctxid]);
1208 struct netxen_rx_buffer *buffer;
1209 struct sk_buff *skb;
1210 u32 length = netxen_get_sts_totallength(sts_data);
1212 u16 pkt_offset = 0, cksum;
1213 struct nx_host_rds_ring *rds_ring;
1215 desc_ctx = netxen_get_sts_type(sts_data);
1216 if (unlikely(desc_ctx >= NUM_RCV_DESC_RINGS)) {
1217 printk("%s: %s Bad Rcv descriptor ring\n",
1218 netxen_nic_driver_name, netdev->name);
1222 rds_ring = &recv_ctx->rds_rings[desc_ctx];
1223 if (unlikely(index > rds_ring->max_rx_desc_count)) {
1224 DPRINTK(ERR, "Got a buffer index:%x Max is %x\n",
1225 index, rds_ring->max_rx_desc_count);
1228 buffer = &rds_ring->rx_buf_arr[index];
1229 if (desc_ctx == RCV_DESC_LRO_CTXID) {
1230 buffer->lro_current_frags++;
1231 if (netxen_get_sts_desc_lro_last_frag(desc)) {
1232 buffer->lro_expected_frags =
1233 netxen_get_sts_desc_lro_cnt(desc);
1234 buffer->lro_length = length;
1236 if (buffer->lro_current_frags != buffer->lro_expected_frags) {
1237 if (buffer->lro_expected_frags != 0) {
1238 printk("LRO: (refhandle:%x) recv frag. "
1239 "wait for last. flags: %x expected:%d "
1241 netxen_get_sts_desc_lro_last_frag(desc),
1242 buffer->lro_expected_frags,
1243 buffer->lro_current_frags);
1249 cksum = netxen_get_sts_status(sts_data);
1251 skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1255 if (desc_ctx == RCV_DESC_LRO_CTXID) {
1256 /* True length was only available on the last pkt */
1257 skb_put(skb, buffer->lro_length);
1259 if (length > rds_ring->skb_size)
1260 skb_put(skb, rds_ring->skb_size);
1262 skb_put(skb, length);
1264 pkt_offset = netxen_get_sts_pkt_offset(sts_data);
1266 skb_pull(skb, pkt_offset);
1269 skb->protocol = eth_type_trans(skb, netdev);
1272 * rx buffer chaining is disabled, walk and free
1273 * any spurious rx buffer chain.
1276 u16 i, nr_frags = desc->nr_frags;
1278 dev_kfree_skb_any(skb);
1279 for (i = 0; i < nr_frags; i++) {
1280 index = frag_desc->frag_handles[i];
1281 skb = netxen_process_rxbuf(adapter,
1282 rds_ring, index, cksum);
1284 dev_kfree_skb_any(skb);
1286 adapter->stats.rxdropped++;
1288 netif_receive_skb(skb);
1290 adapter->stats.no_rcv++;
1291 adapter->stats.rxbytes += length;
1295 /* Process Receive status ring */
1296 u32 netxen_process_rcv_ring(struct netxen_adapter *adapter, int ctxid, int max)
1298 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctxid]);
1299 struct status_desc *desc_head = recv_ctx->rcv_status_desc_head;
1300 struct status_desc *desc, *frag_desc;
1301 u32 consumer = recv_ctx->status_rx_consumer;
1302 int count = 0, ring;
1306 while (count < max) {
1307 desc = &desc_head[consumer];
1308 if (!(netxen_get_sts_owner(desc) & STATUS_OWNER_HOST)) {
1309 DPRINTK(ERR, "desc %p ownedby %x\n", desc,
1310 netxen_get_sts_owner(desc));
1314 sts_data = le64_to_cpu(desc->status_desc_data);
1315 opcode = netxen_get_sts_opcode(sts_data);
1317 if (opcode == NETXEN_NIC_RXPKT_DESC) {
1318 if (desc->nr_frags) {
1319 consumer = get_next_index(consumer,
1320 adapter->max_rx_desc_count);
1321 frag_desc = &desc_head[consumer];
1322 netxen_set_sts_owner(frag_desc,
1323 STATUS_OWNER_PHANTOM);
1327 netxen_process_rcv(adapter, ctxid, desc, frag_desc);
1329 netxen_set_sts_owner(desc, STATUS_OWNER_PHANTOM);
1331 consumer = get_next_index(consumer,
1332 adapter->max_rx_desc_count);
1335 for (ring = 0; ring < adapter->max_rds_rings; ring++)
1336 netxen_post_rx_buffers_nodb(adapter, ctxid, ring);
1338 /* update the consumer index in phantom */
1340 recv_ctx->status_rx_consumer = consumer;
1343 adapter->pci_write_normalize(adapter,
1344 recv_ctx->crb_sts_consumer, consumer);
1350 /* Process Command status ring */
1351 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1353 u32 last_consumer, consumer;
1355 struct netxen_cmd_buffer *buffer;
1356 struct pci_dev *pdev = adapter->pdev;
1357 struct net_device *netdev = adapter->netdev;
1358 struct netxen_skb_frag *frag;
1361 last_consumer = adapter->last_cmd_consumer;
1362 consumer = le32_to_cpu(*(adapter->cmd_consumer));
1364 while (last_consumer != consumer) {
1365 buffer = &adapter->cmd_buf_arr[last_consumer];
1367 frag = &buffer->frag_array[0];
1368 pci_unmap_single(pdev, frag->dma, frag->length,
1371 for (i = 1; i < buffer->frag_count; i++) {
1372 frag++; /* Get the next frag */
1373 pci_unmap_page(pdev, frag->dma, frag->length,
1378 adapter->stats.xmitfinished++;
1379 dev_kfree_skb_any(buffer->skb);
1383 last_consumer = get_next_index(last_consumer,
1384 adapter->max_tx_desc_count);
1385 if (++count >= MAX_STATUS_HANDLE)
1390 adapter->last_cmd_consumer = last_consumer;
1392 if (netif_queue_stopped(netdev) && netif_running(netdev)) {
1393 netif_tx_lock(netdev);
1394 netif_wake_queue(netdev);
1396 netif_tx_unlock(netdev);
1400 * If everything is freed up to consumer then check if the ring is full
1401 * If the ring is full then check if more needs to be freed and
1402 * schedule the call back again.
1404 * This happens when there are 2 CPUs. One could be freeing and the
1405 * other filling it. If the ring is full when we get out of here and
1406 * the card has already interrupted the host then the host can miss the
1409 * There is still a possible race condition and the host could miss an
1410 * interrupt. The card has to take care of this.
1412 consumer = le32_to_cpu(*(adapter->cmd_consumer));
1413 done = (last_consumer == consumer);
1419 * netxen_post_rx_buffers puts buffer in the Phantom memory
1421 void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx, u32 ringid)
1423 struct pci_dev *pdev = adapter->pdev;
1424 struct sk_buff *skb;
1425 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
1426 struct nx_host_rds_ring *rds_ring = NULL;
1428 struct rcv_desc *pdesc;
1429 struct netxen_rx_buffer *buffer;
1432 netxen_ctx_msg msg = 0;
1434 struct list_head *head;
1436 rds_ring = &recv_ctx->rds_rings[ringid];
1438 producer = rds_ring->producer;
1439 index = rds_ring->begin_alloc;
1440 head = &rds_ring->free_list;
1442 /* We can start writing rx descriptors into the phantom memory. */
1443 while (!list_empty(head)) {
1445 skb = dev_alloc_skb(rds_ring->skb_size);
1446 if (unlikely(!skb)) {
1447 rds_ring->begin_alloc = index;
1451 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1452 list_del(&buffer->list);
1454 count++; /* now there should be no failure */
1455 pdesc = &rds_ring->desc_head[producer];
1457 if (!adapter->ahw.cut_through)
1458 skb_reserve(skb, 2);
1459 /* This will be setup when we receive the
1460 * buffer after it has been filled FSL TBD TBD
1461 * skb->dev = netdev;
1463 dma = pci_map_single(pdev, skb->data, rds_ring->dma_size,
1464 PCI_DMA_FROMDEVICE);
1465 pdesc->addr_buffer = cpu_to_le64(dma);
1467 buffer->state = NETXEN_BUFFER_BUSY;
1469 /* make a rcv descriptor */
1470 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1471 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1472 DPRINTK(INFO, "done writing descripter\n");
1474 get_next_index(producer, rds_ring->max_rx_desc_count);
1475 index = get_next_index(index, rds_ring->max_rx_desc_count);
1477 /* if we did allocate buffers, then write the count to Phantom */
1479 rds_ring->begin_alloc = index;
1480 rds_ring->producer = producer;
1482 adapter->pci_write_normalize(adapter,
1483 rds_ring->crb_rcv_producer,
1484 (producer-1) & (rds_ring->max_rx_desc_count-1));
1486 if (adapter->fw_major < 4) {
1488 * Write a doorbell msg to tell phanmon of change in
1489 * receive ring producer
1490 * Only for firmware version < 4.0.0
1492 netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1493 netxen_set_msg_privid(msg);
1494 netxen_set_msg_count(msg,
1497 max_rx_desc_count - 1)));
1498 netxen_set_msg_ctxid(msg, adapter->portnum);
1499 netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1501 DB_NORMALIZE(adapter,
1502 NETXEN_RCV_PRODUCER_OFFSET));
1507 static void netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1508 uint32_t ctx, uint32_t ringid)
1510 struct pci_dev *pdev = adapter->pdev;
1511 struct sk_buff *skb;
1512 struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
1513 struct nx_host_rds_ring *rds_ring = NULL;
1515 struct rcv_desc *pdesc;
1516 struct netxen_rx_buffer *buffer;
1519 struct list_head *head;
1521 rds_ring = &recv_ctx->rds_rings[ringid];
1523 producer = rds_ring->producer;
1524 index = rds_ring->begin_alloc;
1525 head = &rds_ring->free_list;
1526 /* We can start writing rx descriptors into the phantom memory. */
1527 while (!list_empty(head)) {
1529 skb = dev_alloc_skb(rds_ring->skb_size);
1530 if (unlikely(!skb)) {
1531 rds_ring->begin_alloc = index;
1535 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1536 list_del(&buffer->list);
1538 count++; /* now there should be no failure */
1539 pdesc = &rds_ring->desc_head[producer];
1540 if (!adapter->ahw.cut_through)
1541 skb_reserve(skb, 2);
1543 buffer->state = NETXEN_BUFFER_BUSY;
1544 buffer->dma = pci_map_single(pdev, skb->data,
1546 PCI_DMA_FROMDEVICE);
1548 /* make a rcv descriptor */
1549 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1550 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1551 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1553 get_next_index(producer, rds_ring->max_rx_desc_count);
1554 index = get_next_index(index, rds_ring->max_rx_desc_count);
1555 buffer = &rds_ring->rx_buf_arr[index];
1558 /* if we did allocate buffers, then write the count to Phantom */
1560 rds_ring->begin_alloc = index;
1561 rds_ring->producer = producer;
1563 adapter->pci_write_normalize(adapter,
1564 rds_ring->crb_rcv_producer,
1565 (producer-1) & (rds_ring->max_rx_desc_count-1));
1570 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1572 memset(&adapter->stats, 0, sizeof(adapter->stats));