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Amit S. Kale3d396eb2006-10-21 15:33:03 -04001/*
Dhananjay Phadke5d242f12009-02-25 15:57:56 +00002 * Copyright (C) 2003 - 2009 NetXen, Inc.
Amit S. Kale3d396eb2006-10-21 15:33:03 -04003 * All rights reserved.
Amit S. Kale80922fb2006-12-04 09:18:00 -08004 *
Amit S. Kale3d396eb2006-10-21 15:33:03 -04005 * 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.
Amit S. Kale80922fb2006-12-04 09:18:00 -08009 *
Amit S. Kale3d396eb2006-10-21 15:33:03 -040010 * 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.
Amit S. Kale80922fb2006-12-04 09:18:00 -080014 *
Amit S. Kale3d396eb2006-10-21 15:33:03 -040015 * 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,
18 * MA 02111-1307, USA.
Amit S. Kale80922fb2006-12-04 09:18:00 -080019 *
Amit S. Kale3d396eb2006-10-21 15:33:03 -040020 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
Amit S. Kale80922fb2006-12-04 09:18:00 -080022 *
Amit S. Kale3d396eb2006-10-21 15:33:03 -040023 * Contact Information:
24 * info@netxen.com
Dhananjay Phadke5d242f12009-02-25 15:57:56 +000025 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
Amit S. Kale3d396eb2006-10-21 15:33:03 -040028 *
29 */
30
31#include <linux/netdevice.h>
32#include <linux/delay.h>
33#include "netxen_nic.h"
34#include "netxen_nic_hw.h"
Amit S. Kale3d396eb2006-10-21 15:33:03 -040035#include "netxen_nic_phan_reg.h"
36
37struct crb_addr_pair {
Linsys Contractor Mithlesh Thukrale0e20a12007-02-28 05:16:40 -080038 u32 addr;
39 u32 data;
Amit S. Kale3d396eb2006-10-21 15:33:03 -040040};
41
42#define NETXEN_MAX_CRB_XFORM 60
43static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
Linsys Contractor Mithlesh Thukrale0e20a12007-02-28 05:16:40 -080044#define NETXEN_ADDR_ERROR (0xffffffff)
Amit S. Kale3d396eb2006-10-21 15:33:03 -040045
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
49
Amit S. Kalecb8011a2006-11-29 09:00:10 -080050#define NETXEN_NIC_XDMA_RESET 0x8000ff
51
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +000052static void
Dhananjay Phadked8b100c2009-03-13 14:52:05 +000053netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
54 struct nx_host_rds_ring *rds_ring);
Adrian Bunk993fb902007-11-05 18:07:31 +010055
Amit S. Kale3d396eb2006-10-21 15:33:03 -040056static void crb_addr_transform_setup(void)
57{
58 crb_addr_transform(XDMA);
59 crb_addr_transform(TIMR);
60 crb_addr_transform(SRE);
61 crb_addr_transform(SQN3);
62 crb_addr_transform(SQN2);
63 crb_addr_transform(SQN1);
64 crb_addr_transform(SQN0);
65 crb_addr_transform(SQS3);
66 crb_addr_transform(SQS2);
67 crb_addr_transform(SQS1);
68 crb_addr_transform(SQS0);
69 crb_addr_transform(RPMX7);
70 crb_addr_transform(RPMX6);
71 crb_addr_transform(RPMX5);
72 crb_addr_transform(RPMX4);
73 crb_addr_transform(RPMX3);
74 crb_addr_transform(RPMX2);
75 crb_addr_transform(RPMX1);
76 crb_addr_transform(RPMX0);
77 crb_addr_transform(ROMUSB);
78 crb_addr_transform(SN);
79 crb_addr_transform(QMN);
80 crb_addr_transform(QMS);
81 crb_addr_transform(PGNI);
82 crb_addr_transform(PGND);
83 crb_addr_transform(PGN3);
84 crb_addr_transform(PGN2);
85 crb_addr_transform(PGN1);
86 crb_addr_transform(PGN0);
87 crb_addr_transform(PGSI);
88 crb_addr_transform(PGSD);
89 crb_addr_transform(PGS3);
90 crb_addr_transform(PGS2);
91 crb_addr_transform(PGS1);
92 crb_addr_transform(PGS0);
93 crb_addr_transform(PS);
94 crb_addr_transform(PH);
95 crb_addr_transform(NIU);
96 crb_addr_transform(I2Q);
97 crb_addr_transform(EG);
98 crb_addr_transform(MN);
99 crb_addr_transform(MS);
100 crb_addr_transform(CAS2);
101 crb_addr_transform(CAS1);
102 crb_addr_transform(CAS0);
103 crb_addr_transform(CAM);
104 crb_addr_transform(C2C1);
105 crb_addr_transform(C2C0);
Amit S. Kale1fcca1a2007-02-05 07:35:26 -0800106 crb_addr_transform(SMB);
Dhananjay Phadkee4c93c82008-07-21 19:44:02 -0700107 crb_addr_transform(OCM0);
108 crb_addr_transform(I2C0);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400109}
110
Dhananjay Phadke29566402008-07-21 19:44:04 -0700111void netxen_release_rx_buffers(struct netxen_adapter *adapter)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400112{
Dhananjay Phadke29566402008-07-21 19:44:04 -0700113 struct netxen_recv_context *recv_ctx;
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -0700114 struct nx_host_rds_ring *rds_ring;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700115 struct netxen_rx_buffer *rx_buf;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000116 int i, ring;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400117
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000118 recv_ctx = &adapter->recv_ctx;
119 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
120 rds_ring = &recv_ctx->rds_rings[ring];
Dhananjay Phadke438627c2009-03-13 14:52:03 +0000121 for (i = 0; i < rds_ring->num_desc; ++i) {
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000122 rx_buf = &(rds_ring->rx_buf_arr[i]);
123 if (rx_buf->state == NETXEN_BUFFER_FREE)
124 continue;
125 pci_unmap_single(adapter->pdev,
126 rx_buf->dma,
127 rds_ring->dma_size,
128 PCI_DMA_FROMDEVICE);
129 if (rx_buf->skb != NULL)
130 dev_kfree_skb_any(rx_buf->skb);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700131 }
132 }
133}
134
135void netxen_release_tx_buffers(struct netxen_adapter *adapter)
136{
137 struct netxen_cmd_buffer *cmd_buf;
138 struct netxen_skb_frag *buffrag;
139 int i, j;
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000140 struct nx_host_tx_ring *tx_ring = &adapter->tx_ring;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700141
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000142 cmd_buf = tx_ring->cmd_buf_arr;
143 for (i = 0; i < tx_ring->num_desc; i++) {
Dhananjay Phadke29566402008-07-21 19:44:04 -0700144 buffrag = cmd_buf->frag_array;
145 if (buffrag->dma) {
146 pci_unmap_single(adapter->pdev, buffrag->dma,
147 buffrag->length, PCI_DMA_TODEVICE);
148 buffrag->dma = 0ULL;
149 }
150 for (j = 0; j < cmd_buf->frag_count; j++) {
151 buffrag++;
152 if (buffrag->dma) {
153 pci_unmap_page(adapter->pdev, buffrag->dma,
154 buffrag->length,
155 PCI_DMA_TODEVICE);
156 buffrag->dma = 0ULL;
157 }
158 }
Dhananjay Phadke29566402008-07-21 19:44:04 -0700159 if (cmd_buf->skb) {
160 dev_kfree_skb_any(cmd_buf->skb);
161 cmd_buf->skb = NULL;
162 }
163 cmd_buf++;
164 }
165}
166
167void netxen_free_sw_resources(struct netxen_adapter *adapter)
168{
169 struct netxen_recv_context *recv_ctx;
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -0700170 struct nx_host_rds_ring *rds_ring;
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000171 struct nx_host_tx_ring *tx_ring;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000172 int ring;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700173
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000174 recv_ctx = &adapter->recv_ctx;
175 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
176 rds_ring = &recv_ctx->rds_rings[ring];
177 if (rds_ring->rx_buf_arr) {
178 vfree(rds_ring->rx_buf_arr);
179 rds_ring->rx_buf_arr = NULL;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700180 }
181 }
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000182
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000183 tx_ring = &adapter->tx_ring;
184 if (tx_ring->cmd_buf_arr)
185 vfree(tx_ring->cmd_buf_arr);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700186 return;
187}
188
189int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
190{
191 struct netxen_recv_context *recv_ctx;
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -0700192 struct nx_host_rds_ring *rds_ring;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000193 struct nx_host_sds_ring *sds_ring;
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000194 struct nx_host_tx_ring *tx_ring = &adapter->tx_ring;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700195 struct netxen_rx_buffer *rx_buf;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000196 int ring, i, num_rx_bufs;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700197
198 struct netxen_cmd_buffer *cmd_buf_arr;
199 struct net_device *netdev = adapter->netdev;
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000200 struct pci_dev *pdev = adapter->pdev;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700201
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000202 tx_ring->num_desc = adapter->num_txd;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000203 cmd_buf_arr =
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000204 (struct netxen_cmd_buffer *)vmalloc(TX_BUFF_RINGSIZE(tx_ring));
Dhananjay Phadke29566402008-07-21 19:44:04 -0700205 if (cmd_buf_arr == NULL) {
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000206 dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
Dhananjay Phadke29566402008-07-21 19:44:04 -0700207 netdev->name);
208 return -ENOMEM;
209 }
Dhananjay Phadked877f1e2009-04-07 22:50:40 +0000210 memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
211 tx_ring->cmd_buf_arr = cmd_buf_arr;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700212
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000213 recv_ctx = &adapter->recv_ctx;
214 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
215 rds_ring = &recv_ctx->rds_rings[ring];
Dhananjay Phadke438627c2009-03-13 14:52:03 +0000216 switch (ring) {
217 case RCV_RING_NORMAL:
218 rds_ring->num_desc = adapter->num_rxd;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000219 if (adapter->ahw.cut_through) {
220 rds_ring->dma_size =
221 NX_CT_DEFAULT_RX_BUF_LEN;
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -0700222 rds_ring->skb_size =
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000223 NX_CT_DEFAULT_RX_BUF_LEN;
224 } else {
225 rds_ring->dma_size = RX_DMA_MAP_LEN;
226 rds_ring->skb_size =
227 MAX_RX_BUFFER_LENGTH;
228 }
229 break;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700230
Dhananjay Phadke438627c2009-03-13 14:52:03 +0000231 case RCV_RING_JUMBO:
232 rds_ring->num_desc = adapter->num_jumbo_rxd;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000233 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
234 rds_ring->dma_size =
235 NX_P3_RX_JUMBO_BUF_MAX_LEN;
236 else
237 rds_ring->dma_size =
238 NX_P2_RX_JUMBO_BUF_MAX_LEN;
239 rds_ring->skb_size =
240 rds_ring->dma_size + NET_IP_ALIGN;
241 break;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700242
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000243 case RCV_RING_LRO:
Dhananjay Phadke438627c2009-03-13 14:52:03 +0000244 rds_ring->num_desc = adapter->num_lro_rxd;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000245 rds_ring->dma_size = RX_LRO_DMA_MAP_LEN;
246 rds_ring->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
247 break;
248
249 }
250 rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000251 vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000252 if (rds_ring->rx_buf_arr == NULL) {
253 printk(KERN_ERR "%s: Failed to allocate "
254 "rx buffer ring %d\n",
255 netdev->name, ring);
256 /* free whatever was already allocated */
257 goto err_out;
258 }
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000259 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000260 INIT_LIST_HEAD(&rds_ring->free_list);
261 /*
262 * Now go through all of them, set reference handles
263 * and put them in the queues.
264 */
Dhananjay Phadke438627c2009-03-13 14:52:03 +0000265 num_rx_bufs = rds_ring->num_desc;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000266 rx_buf = rds_ring->rx_buf_arr;
267 for (i = 0; i < num_rx_bufs; i++) {
268 list_add_tail(&rx_buf->list,
269 &rds_ring->free_list);
270 rx_buf->ref_handle = i;
271 rx_buf->state = NETXEN_BUFFER_FREE;
272 rx_buf++;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400273 }
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000274 spin_lock_init(&rds_ring->lock);
275 }
276
277 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
278 sds_ring = &recv_ctx->sds_rings[ring];
279 sds_ring->irq = adapter->msix_entries[ring].vector;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000280 sds_ring->adapter = adapter;
281 sds_ring->num_desc = adapter->num_rxd;
282
283 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
284 INIT_LIST_HEAD(&sds_ring->free_list[i]);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400285 }
Dhananjay Phadke29566402008-07-21 19:44:04 -0700286
287 return 0;
288
289err_out:
290 netxen_free_sw_resources(adapter);
291 return -ENOMEM;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400292}
293
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400294void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
295{
Dhananjay Phadke1e2d0052009-03-09 08:50:56 +0000296 switch (adapter->ahw.port_type) {
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400297 case NETXEN_NIC_GBE:
Amit S. Kale80922fb2006-12-04 09:18:00 -0800298 adapter->enable_phy_interrupts =
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400299 netxen_niu_gbe_enable_phy_interrupts;
Amit S. Kale80922fb2006-12-04 09:18:00 -0800300 adapter->disable_phy_interrupts =
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400301 netxen_niu_gbe_disable_phy_interrupts;
Amit S. Kale80922fb2006-12-04 09:18:00 -0800302 adapter->macaddr_set = netxen_niu_macaddr_set;
303 adapter->set_mtu = netxen_nic_set_mtu_gb;
304 adapter->set_promisc = netxen_niu_set_promiscuous_mode;
Amit S. Kale80922fb2006-12-04 09:18:00 -0800305 adapter->phy_read = netxen_niu_gbe_phy_read;
306 adapter->phy_write = netxen_niu_gbe_phy_write;
Dhananjay Phadkec9fc8912008-07-21 19:44:07 -0700307 adapter->init_port = netxen_niu_gbe_init_port;
Amit S. Kale80922fb2006-12-04 09:18:00 -0800308 adapter->stop_port = netxen_niu_disable_gbe_port;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400309 break;
310
311 case NETXEN_NIC_XGBE:
Amit S. Kale80922fb2006-12-04 09:18:00 -0800312 adapter->enable_phy_interrupts =
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400313 netxen_niu_xgbe_enable_phy_interrupts;
Amit S. Kale80922fb2006-12-04 09:18:00 -0800314 adapter->disable_phy_interrupts =
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400315 netxen_niu_xgbe_disable_phy_interrupts;
Amit S. Kale80922fb2006-12-04 09:18:00 -0800316 adapter->macaddr_set = netxen_niu_xg_macaddr_set;
317 adapter->set_mtu = netxen_nic_set_mtu_xgb;
318 adapter->init_port = netxen_niu_xg_init_port;
319 adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
Amit S. Kale80922fb2006-12-04 09:18:00 -0800320 adapter->stop_port = netxen_niu_disable_xg_port;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400321 break;
322
323 default:
324 break;
325 }
Dhananjay Phadke9ad27642008-08-01 03:14:59 -0700326
327 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
328 adapter->set_mtu = nx_fw_cmd_set_mtu;
329 adapter->set_promisc = netxen_p3_nic_set_promisc;
330 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400331}
332
333/*
334 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
335 * address to external PCI CRB address.
336 */
Adrian Bunk993fb902007-11-05 18:07:31 +0100337static u32 netxen_decode_crb_addr(u32 addr)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400338{
339 int i;
Linsys Contractor Mithlesh Thukrale0e20a12007-02-28 05:16:40 -0800340 u32 base_addr, offset, pci_base;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400341
342 crb_addr_transform_setup();
343
344 pci_base = NETXEN_ADDR_ERROR;
345 base_addr = addr & 0xfff00000;
346 offset = addr & 0x000fffff;
347
348 for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
349 if (crb_addr_xform[i] == base_addr) {
350 pci_base = i << 20;
351 break;
352 }
353 }
354 if (pci_base == NETXEN_ADDR_ERROR)
355 return pci_base;
356 else
357 return (pci_base + offset);
358}
359
Mithlesh Thukral13ba9c72007-04-20 07:53:05 -0700360static long rom_max_timeout = 100;
361static long rom_lock_timeout = 10000;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400362
Adrian Bunk993fb902007-11-05 18:07:31 +0100363static int rom_lock(struct netxen_adapter *adapter)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400364{
365 int iter;
366 u32 done = 0;
367 int timeout = 0;
368
369 while (!done) {
370 /* acquire semaphore2 from PCI HW block */
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000371 done = netxen_nic_read_w0(adapter,
372 NETXEN_PCIE_REG(PCIE_SEM2_LOCK));
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400373 if (done == 1)
374 break;
375 if (timeout >= rom_lock_timeout)
376 return -EIO;
377
378 timeout++;
379 /*
380 * Yield CPU
381 */
382 if (!in_atomic())
383 schedule();
384 else {
385 for (iter = 0; iter < 20; iter++)
386 cpu_relax(); /*This a nop instr on i386 */
387 }
388 }
389 netxen_nic_reg_write(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
390 return 0;
391}
392
Adrian Bunk993fb902007-11-05 18:07:31 +0100393static int netxen_wait_rom_done(struct netxen_adapter *adapter)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400394{
395 long timeout = 0;
396 long done = 0;
397
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800398 cond_resched();
399
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400400 while (done == 0) {
401 done = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_GLB_STATUS);
402 done &= 2;
403 timeout++;
404 if (timeout >= rom_max_timeout) {
405 printk("Timeout reached waiting for rom done");
406 return -EIO;
407 }
408 }
409 return 0;
410}
411
Adrian Bunk993fb902007-11-05 18:07:31 +0100412static void netxen_rom_unlock(struct netxen_adapter *adapter)
Amit S. Kalecb8011a2006-11-29 09:00:10 -0800413{
Amit S. Kalecb8011a2006-11-29 09:00:10 -0800414 /* release semaphore2 */
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000415 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK));
Amit S. Kalecb8011a2006-11-29 09:00:10 -0800416
417}
418
Adrian Bunk993fb902007-11-05 18:07:31 +0100419static int do_rom_fast_read(struct netxen_adapter *adapter,
420 int addr, int *valp)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400421{
422 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400423 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800424 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400425 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
426 if (netxen_wait_rom_done(adapter)) {
427 printk("Error waiting for rom done\n");
428 return -EIO;
429 }
430 /* reset abyte_cnt and dummy_byte_cnt */
431 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800432 udelay(10);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400433 netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
434
435 *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
436 return 0;
437}
438
Adrian Bunk993fb902007-11-05 18:07:31 +0100439static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
440 u8 *bytes, size_t size)
Amit S. Kale27d2ab52007-02-05 07:40:49 -0800441{
442 int addridx;
443 int ret = 0;
444
445 for (addridx = addr; addridx < (addr + size); addridx += 4) {
Al Virof305f782007-12-22 19:44:00 +0000446 int v;
447 ret = do_rom_fast_read(adapter, addridx, &v);
Amit S. Kale27d2ab52007-02-05 07:40:49 -0800448 if (ret != 0)
449 break;
Al Virof305f782007-12-22 19:44:00 +0000450 *(__le32 *)bytes = cpu_to_le32(v);
Amit S. Kale27d2ab52007-02-05 07:40:49 -0800451 bytes += 4;
452 }
453
454 return ret;
455}
456
457int
Jeff Garzik47906542007-11-23 21:23:36 -0500458netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
Amit S. Kale27d2ab52007-02-05 07:40:49 -0800459 u8 *bytes, size_t size)
460{
461 int ret;
462
463 ret = rom_lock(adapter);
464 if (ret < 0)
465 return ret;
466
467 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
468
469 netxen_rom_unlock(adapter);
470 return ret;
471}
472
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400473int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
474{
475 int ret;
476
477 if (rom_lock(adapter) != 0)
478 return -EIO;
479
480 ret = do_rom_fast_read(adapter, addr, valp);
Amit S. Kalecb8011a2006-11-29 09:00:10 -0800481 netxen_rom_unlock(adapter);
482 return ret;
483}
484
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400485#define NETXEN_BOARDTYPE 0x4008
486#define NETXEN_BOARDNUM 0x400c
487#define NETXEN_CHIPNUM 0x4010
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400488
489int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
490{
Dhananjay Phadkedcd56fd2008-06-15 22:59:45 -0700491 int addr, val;
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800492 int i, n, init_delay = 0;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400493 struct crb_addr_pair *buf;
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800494 unsigned offset;
Linsys Contractor Mithlesh Thukrale0e20a12007-02-28 05:16:40 -0800495 u32 off;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400496
497 /* resetall */
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800498 rom_lock(adapter);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400499 netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
Dhananjay Phadke29566402008-07-21 19:44:04 -0700500 0xffffffff);
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800501 netxen_rom_unlock(adapter);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400502
503 if (verbose) {
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400504 if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
505 printk("P2 ROM board type: 0x%08x\n", val);
506 else
507 printk("Could not read board type\n");
508 if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
509 printk("P2 ROM board num: 0x%08x\n", val);
510 else
511 printk("Could not read board number\n");
512 if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
513 printk("P2 ROM chip num: 0x%08x\n", val);
514 else
515 printk("Could not read chip number\n");
516 }
517
Dhananjay Phadke29566402008-07-21 19:44:04 -0700518 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
519 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800520 (n != 0xcafecafe) ||
Dhananjay Phadke29566402008-07-21 19:44:04 -0700521 netxen_rom_fast_read(adapter, 4, &n) != 0) {
522 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
523 "n: %08x\n", netxen_nic_driver_name, n);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400524 return -EIO;
525 }
Dhananjay Phadke29566402008-07-21 19:44:04 -0700526 offset = n & 0xffffU;
527 n = (n >> 16) & 0xffffU;
528 } else {
529 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
530 !(n & 0x80000000)) {
531 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
532 "n: %08x\n", netxen_nic_driver_name, n);
533 return -EIO;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400534 }
Dhananjay Phadke29566402008-07-21 19:44:04 -0700535 offset = 1;
536 n &= ~0x80000000;
537 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400538
Dhananjay Phadke29566402008-07-21 19:44:04 -0700539 if (n < 1024) {
540 if (verbose)
541 printk(KERN_DEBUG "%s: %d CRB init values found"
542 " in ROM.\n", netxen_nic_driver_name, n);
543 } else {
544 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
545 " initialized.\n", __func__, n);
546 return -EIO;
547 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400548
Dhananjay Phadke29566402008-07-21 19:44:04 -0700549 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
550 if (buf == NULL) {
551 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
552 netxen_nic_driver_name);
553 return -ENOMEM;
554 }
555 for (i = 0; i < n; i++) {
556 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
Daniel Marjamäki584dbe92009-01-29 08:55:56 +0000557 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
558 kfree(buf);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700559 return -EIO;
Daniel Marjamäki584dbe92009-01-29 08:55:56 +0000560 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400561
Dhananjay Phadke29566402008-07-21 19:44:04 -0700562 buf[i].addr = addr;
563 buf[i].data = val;
564
565 if (verbose)
566 printk(KERN_DEBUG "%s: PCI: 0x%08x == 0x%08x\n",
567 netxen_nic_driver_name,
568 (u32)netxen_decode_crb_addr(addr), val);
569 }
570 for (i = 0; i < n; i++) {
571
572 off = netxen_decode_crb_addr(buf[i].addr);
573 if (off == NETXEN_ADDR_ERROR) {
574 printk(KERN_ERR"CRB init value out of range %x\n",
Amit S. Kale1fcca1a2007-02-05 07:35:26 -0800575 buf[i].addr);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700576 continue;
577 }
578 off += NETXEN_PCI_CRBSPACE;
579 /* skipping cold reboot MAGIC */
580 if (off == NETXEN_CAM_RAM(0x1fc))
581 continue;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400582
Dhananjay Phadke29566402008-07-21 19:44:04 -0700583 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
584 /* do not reset PCI */
585 if (off == (ROMUSB_GLB + 0xbc))
586 continue;
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800587 if (off == (ROMUSB_GLB + 0xa8))
588 continue;
589 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
590 continue;
591 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
592 continue;
593 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
594 continue;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700595 if (off == (NETXEN_CRB_PEG_NET_1 + 0x18))
596 buf[i].data = 0x1020;
597 /* skip the function enable register */
598 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
599 continue;
600 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
601 continue;
602 if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
603 continue;
604 }
605
606 if (off == NETXEN_ADDR_ERROR) {
607 printk(KERN_ERR "%s: Err: Unknown addr: 0x%08x\n",
608 netxen_nic_driver_name, buf[i].addr);
609 continue;
610 }
611
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800612 init_delay = 1;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700613 /* After writing this register, HW needs time for CRB */
614 /* to quiet down (else crb_window returns 0xffffffff) */
615 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800616 init_delay = 1000;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700617 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400618 /* hold xdma in reset also */
Amit S. Kalecb8011a2006-11-29 09:00:10 -0800619 buf[i].data = NETXEN_NIC_XDMA_RESET;
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800620 buf[i].data = 0x8000ff;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400621 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400622 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400623
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000624 adapter->hw_write_wx(adapter, off, buf[i].data);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400625
Dhananjay Phadke27c915a2009-01-14 20:49:00 -0800626 msleep(init_delay);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400627 }
Dhananjay Phadke29566402008-07-21 19:44:04 -0700628 kfree(buf);
629
630 /* disable_peg_cache_all */
631
632 /* unreset_net_cache */
633 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000634 val = adapter->hw_read_wx(adapter,
635 NETXEN_ROMUSB_GLB_SW_RESET);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700636 netxen_crb_writelit_adapter(adapter,
637 NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
638 }
639
640 /* p2dn replyCount */
641 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
642 /* disable_peg_cache 0 */
643 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
644 /* disable_peg_cache 1 */
645 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
646
647 /* peg_clr_all */
648
649 /* peg_clr 0 */
650 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
651 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
652 /* peg_clr 1 */
653 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
654 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
655 /* peg_clr 2 */
656 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
657 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
658 /* peg_clr 3 */
659 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
660 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400661 return 0;
662}
663
Amit S. Kaleed25ffa2006-12-04 09:23:25 -0800664int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
665{
666 uint64_t addr;
667 uint32_t hi;
668 uint32_t lo;
669
670 adapter->dummy_dma.addr =
Dhananjay Phadke7830b222008-07-21 19:44:00 -0700671 pci_alloc_consistent(adapter->pdev,
Amit S. Kaleed25ffa2006-12-04 09:23:25 -0800672 NETXEN_HOST_DUMMY_DMA_SIZE,
673 &adapter->dummy_dma.phys_addr);
674 if (adapter->dummy_dma.addr == NULL) {
675 printk("%s: ERROR: Could not allocate dummy DMA memory\n",
Dhananjay Phadke29566402008-07-21 19:44:04 -0700676 __func__);
Amit S. Kaleed25ffa2006-12-04 09:23:25 -0800677 return -ENOMEM;
678 }
679
680 addr = (uint64_t) adapter->dummy_dma.phys_addr;
681 hi = (addr >> 32) & 0xffffffff;
682 lo = addr & 0xffffffff;
683
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000684 adapter->hw_write_wx(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
685 adapter->hw_write_wx(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
Amit S. Kaleed25ffa2006-12-04 09:23:25 -0800686
Dhananjay Phadke29566402008-07-21 19:44:04 -0700687 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
688 uint32_t temp = 0;
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000689 adapter->hw_write_wx(adapter, CRB_HOST_DUMMY_BUF, temp);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700690 }
691
Amit S. Kaleed25ffa2006-12-04 09:23:25 -0800692 return 0;
693}
694
695void netxen_free_adapter_offload(struct netxen_adapter *adapter)
696{
Dhananjay Phadke15eef1e2008-08-08 00:08:42 -0700697 int i = 100;
Dhananjay Phadke439b4542008-06-15 22:59:46 -0700698
Dhananjay Phadke15eef1e2008-08-08 00:08:42 -0700699 if (!adapter->dummy_dma.addr)
700 return;
701
702 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
Dhananjay Phadke439b4542008-06-15 22:59:46 -0700703 do {
704 if (dma_watchdog_shutdown_request(adapter) == 1)
705 break;
706 msleep(50);
707 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
708 break;
709 } while (--i);
Dhananjay Phadke15eef1e2008-08-08 00:08:42 -0700710 }
Dhananjay Phadke439b4542008-06-15 22:59:46 -0700711
Dhananjay Phadke15eef1e2008-08-08 00:08:42 -0700712 if (i) {
713 pci_free_consistent(adapter->pdev,
714 NETXEN_HOST_DUMMY_DMA_SIZE,
715 adapter->dummy_dma.addr,
716 adapter->dummy_dma.phys_addr);
717 adapter->dummy_dma.addr = NULL;
718 } else {
719 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
720 adapter->netdev->name);
Amit S. Kaleed25ffa2006-12-04 09:23:25 -0800721 }
722}
723
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +0530724int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400725{
726 u32 val = 0;
Dhananjay Phadke29566402008-07-21 19:44:04 -0700727 int retries = 60;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400728
Amit S. Kalecb8011a2006-11-29 09:00:10 -0800729 if (!pegtune_val) {
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +0530730 do {
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000731 val = adapter->hw_read_wx(adapter,
Dhananjay Phadke3ce06a32008-07-21 19:44:03 -0700732 CRB_CMDPEG_STATE);
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +0530733
734 if (val == PHAN_INITIALIZE_COMPLETE ||
735 val == PHAN_INITIALIZE_ACK)
736 return 0;
737
Dhananjay Phadke29566402008-07-21 19:44:04 -0700738 msleep(500);
739
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +0530740 } while (--retries);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700741
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +0530742 if (!retries) {
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000743 pegtune_val = adapter->hw_read_wx(adapter,
Dhananjay Phadke29566402008-07-21 19:44:04 -0700744 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +0530745 printk(KERN_WARNING "netxen_phantom_init: init failed, "
746 "pegtune_val=%x\n", pegtune_val);
747 return -1;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400748 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400749 }
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +0530750
751 return 0;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400752}
753
Dhananjay Phadke56a00782009-04-07 22:50:41 +0000754static int
755netxen_receive_peg_ready(struct netxen_adapter *adapter)
Dhananjay Phadke29566402008-07-21 19:44:04 -0700756{
757 u32 val = 0;
758 int retries = 2000;
759
760 do {
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000761 val = adapter->hw_read_wx(adapter, CRB_RCVPEG_STATE);
Dhananjay Phadke29566402008-07-21 19:44:04 -0700762
763 if (val == PHAN_PEG_RCV_INITIALIZED)
764 return 0;
765
766 msleep(10);
767
768 } while (--retries);
769
770 if (!retries) {
771 printk(KERN_ERR "Receive Peg initialization not "
772 "complete, state: 0x%x.\n", val);
773 return -EIO;
774 }
775
776 return 0;
777}
778
Dhananjay Phadke56a00782009-04-07 22:50:41 +0000779int netxen_init_firmware(struct netxen_adapter *adapter)
780{
781 int err;
782
783 err = netxen_receive_peg_ready(adapter);
784 if (err)
785 return err;
786
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000787 adapter->hw_write_wx(adapter,
Dhananjay Phadke56a00782009-04-07 22:50:41 +0000788 CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000789 adapter->hw_write_wx(adapter,
Dhananjay Phadke56a00782009-04-07 22:50:41 +0000790 CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000791 adapter->hw_write_wx(adapter,
Dhananjay Phadke56a00782009-04-07 22:50:41 +0000792 CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +0000793 adapter->hw_write_wx(adapter,
Dhananjay Phadke56a00782009-04-07 22:50:41 +0000794 CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
795
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +0000796 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222)) {
797 adapter->capabilities = netxen_nic_reg_read(adapter,
798 CRB_FW_CAPABILITIES_1);
799 }
800
Dhananjay Phadke56a00782009-04-07 22:50:41 +0000801 return err;
802}
803
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +0000804static void
805netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
806{
807 u32 cable_OUI;
808 u16 cable_len;
809 u16 link_speed;
810 u8 link_status, module, duplex, autoneg;
811 struct net_device *netdev = adapter->netdev;
812
813 adapter->has_link_events = 1;
814
815 cable_OUI = msg->body[1] & 0xffffffff;
816 cable_len = (msg->body[1] >> 32) & 0xffff;
817 link_speed = (msg->body[1] >> 48) & 0xffff;
818
819 link_status = msg->body[2] & 0xff;
820 duplex = (msg->body[2] >> 16) & 0xff;
821 autoneg = (msg->body[2] >> 24) & 0xff;
822
823 module = (msg->body[2] >> 8) & 0xff;
824 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
825 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
826 netdev->name, cable_OUI, cable_len);
827 } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
828 printk(KERN_INFO "%s: unsupported cable length %d\n",
829 netdev->name, cable_len);
830 }
831
832 netxen_advert_link_change(adapter, link_status);
833
834 /* update link parameters */
835 if (duplex == LINKEVENT_FULL_DUPLEX)
836 adapter->link_duplex = DUPLEX_FULL;
837 else
838 adapter->link_duplex = DUPLEX_HALF;
839 adapter->module_type = module;
840 adapter->link_autoneg = autoneg;
841 adapter->link_speed = link_speed;
842}
843
844static void
845netxen_handle_fw_message(int desc_cnt, int index,
846 struct nx_host_sds_ring *sds_ring)
847{
848 nx_fw_msg_t msg;
849 struct status_desc *desc;
850 int i = 0, opcode;
851
852 while (desc_cnt > 0 && i < 8) {
853 desc = &sds_ring->desc_head[index];
854 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
855 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
856
857 index = get_next_index(index, sds_ring->num_desc);
858 desc_cnt--;
859 }
860
861 opcode = netxen_get_nic_msg_opcode(msg.body[0]);
862 switch (opcode) {
863 case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
864 netxen_handle_linkevent(sds_ring->adapter, &msg);
865 break;
866 default:
867 break;
868 }
869}
870
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000871static int
872netxen_alloc_rx_skb(struct netxen_adapter *adapter,
873 struct nx_host_rds_ring *rds_ring,
874 struct netxen_rx_buffer *buffer)
875{
876 struct sk_buff *skb;
877 dma_addr_t dma;
878 struct pci_dev *pdev = adapter->pdev;
879
880 buffer->skb = dev_alloc_skb(rds_ring->skb_size);
881 if (!buffer->skb)
882 return 1;
883
884 skb = buffer->skb;
885
886 if (!adapter->ahw.cut_through)
887 skb_reserve(skb, 2);
888
889 dma = pci_map_single(pdev, skb->data,
890 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
891
892 if (pci_dma_mapping_error(pdev, dma)) {
893 dev_kfree_skb_any(skb);
894 buffer->skb = NULL;
895 return 1;
896 }
897
898 buffer->skb = skb;
899 buffer->dma = dma;
900 buffer->state = NETXEN_BUFFER_BUSY;
901
902 return 0;
903}
904
Dhananjay Phadked9e651b2008-07-21 19:44:08 -0700905static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
906 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
907{
908 struct netxen_rx_buffer *buffer;
909 struct sk_buff *skb;
910
911 buffer = &rds_ring->rx_buf_arr[index];
912
913 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
914 PCI_DMA_FROMDEVICE);
915
916 skb = buffer->skb;
917 if (!skb)
918 goto no_skb;
919
920 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
921 adapter->stats.csummed++;
922 skb->ip_summed = CHECKSUM_UNNECESSARY;
923 } else
924 skb->ip_summed = CHECKSUM_NONE;
925
926 skb->dev = adapter->netdev;
927
928 buffer->skb = NULL;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -0700929no_skb:
930 buffer->state = NETXEN_BUFFER_FREE;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -0700931 return skb;
932}
933
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000934static struct netxen_rx_buffer *
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +0000935netxen_process_rcv(struct netxen_adapter *adapter,
936 int ring, int index, int length, int cksum, int pkt_offset)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400937{
Mithlesh Thukral3176ff32007-04-20 07:52:37 -0700938 struct net_device *netdev = adapter->netdev;
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000939 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400940 struct netxen_rx_buffer *buffer;
941 struct sk_buff *skb;
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +0000942 struct nx_host_rds_ring *rds_ring = &recv_ctx->rds_rings[ring];
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400943
Dhananjay Phadke438627c2009-03-13 14:52:03 +0000944 if (unlikely(index > rds_ring->num_desc))
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000945 return NULL;
Dhananjay Phadke438627c2009-03-13 14:52:03 +0000946
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -0700947 buffer = &rds_ring->rx_buf_arr[index];
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400948
Dhananjay Phadked9e651b2008-07-21 19:44:08 -0700949 skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
950 if (!skb)
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000951 return buffer;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400952
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +0000953 if (length > rds_ring->skb_size)
954 skb_put(skb, rds_ring->skb_size);
955 else
956 skb_put(skb, length);
Dhananjay Phadked9e651b2008-07-21 19:44:08 -0700957
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +0000958
959 if (pkt_offset)
960 skb_pull(skb, pkt_offset);
Amit S. Kaleed25ffa2006-12-04 09:23:25 -0800961
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400962 skb->protocol = eth_type_trans(skb, netdev);
963
Dhananjay Phadke0ddc1102009-03-09 08:50:52 +0000964 netif_receive_skb(skb);
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400965
Dhananjay Phadke0ddc1102009-03-09 08:50:52 +0000966 adapter->stats.no_rcv++;
967 adapter->stats.rxbytes += length;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000968
969 return buffer;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400970}
971
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000972#define netxen_merge_rx_buffers(list, head) \
973 do { list_splice_tail_init(list, head); } while (0);
974
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +0000975int
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000976netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400977{
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000978 struct netxen_adapter *adapter = sds_ring->adapter;
979
980 struct list_head *cur;
981
Dhananjay Phadke0ddc1102009-03-09 08:50:52 +0000982 struct status_desc *desc;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000983 struct netxen_rx_buffer *rxbuf;
984
985 u32 consumer = sds_ring->consumer;
986
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +0000987 int count = 0;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -0700988 u64 sts_data;
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +0000989 int opcode, ring, index, length, cksum, pkt_offset, desc_cnt;
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400990
Amit S. Kale3d396eb2006-10-21 15:33:03 -0400991 while (count < max) {
Dhananjay Phadked8b100c2009-03-13 14:52:05 +0000992 desc = &sds_ring->desc_head[consumer];
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +0000993 sts_data = le64_to_cpu(desc->status_desc_data[0]);
Dhananjay Phadke0ddc1102009-03-09 08:50:52 +0000994
995 if (!(sts_data & STATUS_OWNER_HOST))
996 break;
997
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +0000998 desc_cnt = netxen_get_sts_desc_cnt(sts_data);
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +0000999 ring = netxen_get_sts_type(sts_data);
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +00001000
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +00001001 if (ring > RCV_RING_JUMBO)
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +00001002 goto skip;
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +00001003
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001004 opcode = netxen_get_sts_opcode(sts_data);
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001005
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +00001006 switch (opcode) {
1007 case NETXEN_NIC_RXPKT_DESC:
1008 case NETXEN_OLD_RXPKT_DESC:
1009 break;
1010 case NETXEN_NIC_RESPONSE_DESC:
1011 netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1012 default:
1013 goto skip;
1014 }
1015
1016 WARN_ON(desc_cnt > 1);
1017
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +00001018 index = netxen_get_sts_refhandle(sts_data);
1019 length = netxen_get_sts_totallength(sts_data);
1020 cksum = netxen_get_sts_status(sts_data);
1021 pkt_offset = netxen_get_sts_pkt_offset(sts_data);
1022
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001023 rxbuf = netxen_process_rcv(adapter, ring, index,
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +00001024 length, cksum, pkt_offset);
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001025
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001026 if (rxbuf)
1027 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1028
Dhananjay Phadke3bf26ce2009-04-07 22:50:42 +00001029skip:
1030 for (; desc_cnt > 0; desc_cnt--) {
1031 desc = &sds_ring->desc_head[consumer];
1032 desc->status_desc_data[0] =
1033 cpu_to_le64(STATUS_OWNER_PHANTOM);
1034 consumer = get_next_index(consumer, sds_ring->num_desc);
1035 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001036 count++;
1037 }
Dhananjay Phadke0ddc1102009-03-09 08:50:52 +00001038
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001039 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1040 struct nx_host_rds_ring *rds_ring =
1041 &adapter->recv_ctx.rds_rings[ring];
1042
1043 if (!list_empty(&sds_ring->free_list[ring])) {
1044 list_for_each(cur, &sds_ring->free_list[ring]) {
1045 rxbuf = list_entry(cur,
1046 struct netxen_rx_buffer, list);
1047 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1048 }
1049 spin_lock(&rds_ring->lock);
1050 netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1051 &rds_ring->free_list);
1052 spin_unlock(&rds_ring->lock);
1053 }
1054
1055 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1056 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001057
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001058 if (count) {
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001059 sds_ring->consumer = consumer;
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +00001060 adapter->hw_write_wx(adapter,
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001061 sds_ring->crb_sts_consumer, consumer);
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001062 }
1063
1064 return count;
1065}
1066
1067/* Process Command status ring */
Dhananjay Phadke05aaa022008-03-17 19:59:49 -07001068int netxen_process_cmd_ring(struct netxen_adapter *adapter)
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001069{
Dhananjay Phadked877f1e2009-04-07 22:50:40 +00001070 u32 sw_consumer, hw_consumer;
Dhananjay Phadkeba53e6b2008-03-17 19:59:50 -07001071 int count = 0, i;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001072 struct netxen_cmd_buffer *buffer;
Dhananjay Phadkeba53e6b2008-03-17 19:59:50 -07001073 struct pci_dev *pdev = adapter->pdev;
1074 struct net_device *netdev = adapter->netdev;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001075 struct netxen_skb_frag *frag;
Dhananjay Phadkeba53e6b2008-03-17 19:59:50 -07001076 int done = 0;
Dhananjay Phadked877f1e2009-04-07 22:50:40 +00001077 struct nx_host_tx_ring *tx_ring = &adapter->tx_ring;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001078
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001079 if (!spin_trylock(&adapter->tx_clean_lock))
1080 return 1;
1081
Dhananjay Phadked877f1e2009-04-07 22:50:40 +00001082 sw_consumer = tx_ring->sw_consumer;
1083 barrier(); /* hw_consumer can change underneath */
1084 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001085
Dhananjay Phadked877f1e2009-04-07 22:50:40 +00001086 while (sw_consumer != hw_consumer) {
1087 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
dhananjay@netxen.com53a01e02007-12-26 10:23:58 -08001088 if (buffer->skb) {
1089 frag = &buffer->frag_array[0];
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001090 pci_unmap_single(pdev, frag->dma, frag->length,
1091 PCI_DMA_TODEVICE);
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +05301092 frag->dma = 0ULL;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001093 for (i = 1; i < buffer->frag_count; i++) {
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001094 frag++; /* Get the next frag */
1095 pci_unmap_page(pdev, frag->dma, frag->length,
1096 PCI_DMA_TODEVICE);
Dhananjay Phadke96acb6e2007-07-02 09:37:57 +05301097 frag->dma = 0ULL;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001098 }
1099
Dhananjay Phadkeba53e6b2008-03-17 19:59:50 -07001100 adapter->stats.xmitfinished++;
dhananjay@netxen.com53a01e02007-12-26 10:23:58 -08001101 dev_kfree_skb_any(buffer->skb);
1102 buffer->skb = NULL;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001103 }
1104
Dhananjay Phadked877f1e2009-04-07 22:50:40 +00001105 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
Dhananjay Phadkeba53e6b2008-03-17 19:59:50 -07001106 if (++count >= MAX_STATUS_HANDLE)
1107 break;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001108 }
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001109
Dhananjay Phadkeba53e6b2008-03-17 19:59:50 -07001110 if (count) {
Dhananjay Phadked877f1e2009-04-07 22:50:40 +00001111 tx_ring->sw_consumer = sw_consumer;
Dhananjay Phadkeba53e6b2008-03-17 19:59:50 -07001112 smp_mb();
1113 if (netif_queue_stopped(netdev) && netif_running(netdev)) {
1114 netif_tx_lock(netdev);
1115 netif_wake_queue(netdev);
1116 smp_mb();
1117 netif_tx_unlock(netdev);
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001118 }
1119 }
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001120 /*
1121 * If everything is freed up to consumer then check if the ring is full
1122 * If the ring is full then check if more needs to be freed and
1123 * schedule the call back again.
1124 *
1125 * This happens when there are 2 CPUs. One could be freeing and the
1126 * other filling it. If the ring is full when we get out of here and
1127 * the card has already interrupted the host then the host can miss the
1128 * interrupt.
1129 *
1130 * There is still a possible race condition and the host could miss an
1131 * interrupt. The card has to take care of this.
1132 */
Dhananjay Phadked877f1e2009-04-07 22:50:40 +00001133 barrier(); /* hw_consumer can change underneath */
1134 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1135 done = (sw_consumer == hw_consumer);
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001136 spin_unlock(&adapter->tx_clean_lock);
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001137
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001138 return (done);
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001139}
1140
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +00001141void
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001142netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1143 struct nx_host_rds_ring *rds_ring)
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001144{
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001145 struct rcv_desc *pdesc;
1146 struct netxen_rx_buffer *buffer;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001147 int producer, count = 0;
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001148 netxen_ctx_msg msg = 0;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001149 struct list_head *head;
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001150
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001151 producer = rds_ring->producer;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001152
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001153 spin_lock(&rds_ring->lock);
1154 head = &rds_ring->free_list;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001155 while (!list_empty(head)) {
1156
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001157 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001158
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001159 if (!buffer->skb) {
1160 if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1161 break;
Dhananjay Phadke6f703402009-01-14 20:50:00 -08001162 }
1163
1164 count++;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001165 list_del(&buffer->list);
1166
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001167 /* make a rcv descriptor */
Dhananjay Phadke6f703402009-01-14 20:50:00 -08001168 pdesc = &rds_ring->desc_head[producer];
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001169 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
Amit S. Kaleed33ebe2006-12-18 05:53:59 -08001170 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001171 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
Dhananjay Phadke6f703402009-01-14 20:50:00 -08001172
Dhananjay Phadke438627c2009-03-13 14:52:03 +00001173 producer = get_next_index(producer, rds_ring->num_desc);
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001174 }
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001175 spin_unlock(&rds_ring->lock);
Dhananjay Phadke9b3ef552009-03-13 14:52:04 +00001176
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001177 if (count) {
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001178 rds_ring->producer = producer;
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +00001179 adapter->hw_write_wx(adapter,
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001180 rds_ring->crb_rcv_producer,
Dhananjay Phadke438627c2009-03-13 14:52:03 +00001181 (producer-1) & (rds_ring->num_desc-1));
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001182
1183 if (adapter->fw_major < 4) {
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001184 /*
1185 * Write a doorbell msg to tell phanmon of change in
1186 * receive ring producer
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001187 * Only for firmware version < 4.0.0
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001188 */
1189 netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1190 netxen_set_msg_privid(msg);
1191 netxen_set_msg_count(msg,
Dhananjay Phadke438627c2009-03-13 14:52:03 +00001192 ((producer - 1) &
1193 (rds_ring->num_desc - 1)));
Mithlesh Thukral3176ff32007-04-20 07:52:37 -07001194 netxen_set_msg_ctxid(msg, adapter->portnum);
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001195 netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1196 writel(msg,
1197 DB_NORMALIZE(adapter,
1198 NETXEN_RCV_PRODUCER_OFFSET));
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001199 }
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001200 }
1201}
1202
Dhananjay Phadkebecf46a2009-03-09 08:50:55 +00001203static void
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001204netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1205 struct nx_host_rds_ring *rds_ring)
Amit S. Kaleed25ffa2006-12-04 09:23:25 -08001206{
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001207 struct rcv_desc *pdesc;
1208 struct netxen_rx_buffer *buffer;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001209 int producer, count = 0;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001210 struct list_head *head;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001211
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001212 producer = rds_ring->producer;
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001213 if (!spin_trylock(&rds_ring->lock))
1214 return;
1215
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001216 head = &rds_ring->free_list;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001217 while (!list_empty(head)) {
1218
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001219 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001220
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001221 if (!buffer->skb) {
1222 if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1223 break;
Dhananjay Phadke6f703402009-01-14 20:50:00 -08001224 }
1225
1226 count++;
Dhananjay Phadked9e651b2008-07-21 19:44:08 -07001227 list_del(&buffer->list);
1228
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001229 /* make a rcv descriptor */
Dhananjay Phadke6f703402009-01-14 20:50:00 -08001230 pdesc = &rds_ring->desc_head[producer];
Amit S. Kaleed33ebe2006-12-18 05:53:59 -08001231 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001232 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001233 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
Dhananjay Phadke6f703402009-01-14 20:50:00 -08001234
Dhananjay Phadke438627c2009-03-13 14:52:03 +00001235 producer = get_next_index(producer, rds_ring->num_desc);
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001236 }
1237
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001238 if (count) {
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001239 rds_ring->producer = producer;
Dhananjay Phadke1fbe6322009-04-07 22:50:44 +00001240 adapter->hw_write_wx(adapter,
Dhananjay Phadke48bfd1e2008-07-21 19:44:06 -07001241 rds_ring->crb_rcv_producer,
Dhananjay Phadke438627c2009-03-13 14:52:03 +00001242 (producer - 1) & (rds_ring->num_desc - 1));
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001243 wmb();
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001244 }
Dhananjay Phadked8b100c2009-03-13 14:52:05 +00001245 spin_unlock(&rds_ring->lock);
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001246}
1247
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001248void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1249{
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001250 memset(&adapter->stats, 0, sizeof(adapter->stats));
Mithlesh Thukral3176ff32007-04-20 07:52:37 -07001251 return;
Amit S. Kale3d396eb2006-10-21 15:33:03 -04001252}
1253